WO2022166460A1 - Tension instrument - Google Patents

Abstract

A tension instrument, comprising a machine body (27); a rail (8) rotationally connected to the machine body (27); an adjusting base (10) in sliding fit in the rail (8); an end head (9) rotationally connected to the adjusting base (10); a support arm (28) fixedly connected to the end head (9); a first adjusting assembly for adjusting a rotation angle of the rail (8) on the machine body (27); a second adjusting assembly for adjusting an axial position of the adjusting base (10) in the rail (8); a third adjusting assembly for adjusting a rotation angle of the end head (9) on the adjusting base (10); and an elastic member (3) and a rigid member (2) which are connected to the adjusting base (10), wherein when external force borne by the adjusting base (10) is within a threshold value, the adjusting base (10) is coupled to the rail (8) by means of a roller (4) on the elastic member (3); and when the external force borne by the adjusting base (10) is beyond the threshold value, the adjusting base (10) is coupled to the rail (8) by means of the rigid member (2). The tension instrument can simplify an adjusting structure, improve universality, reduce an eccentric wear phenomenon and reduce the blocking feeling of a user.

Description

a pulling device technical field

The present disclosure relates to the field of fitness equipment, and in particular, to a tension equipment.

Background technique

With the improvement of people's living standards and the promotion of national fitness activities, more and more people use various types of fitness equipment to exercise. With the development and progress of science and technology, the existing fitness equipment is constantly developing in the direction of familyization and intelligence. The traditional pulling equipment provides exercise resistance through the gravity of the counterweight or the elastic force of the spring, which can no longer meet the increasing intelligence of users. , Visual and quantifiable exercise needs. In this context, the applicant in this case has developed an intelligent visual mirror fitness system that uses a drawstring for pulling exercise. However, in the process of further research and development, the applicant found that there are still many problems in the existing technology, such as: (1) The phenomenon of partial wear during use is more serious, and it is easy to cause the user to feel more obstructed when applying force; (2) The adjustment method has a complex structure and poor operability, and it is difficult to meet the needs of users of different heights or exertion habits. Poor performance and versatility. Moreover, there is no tension fitness equipment matched with the intelligent fitness system in the prior art, and the existing tension fitness equipment realizes the connection between the double shaft of the motor and the differential through flexible transmission methods such as belts and chains, which occupies a large amount of Space, it is difficult to apply to a small-sized intelligent fitness system, and it cannot meet the needs of miniaturization and family use of the intelligent fitness system. Moreover, the existing intelligent mirror fitness equipment has various built-in equipment in the body and is displayed and mirrored on the front mirror, but it is relatively weak in terms of pulling exercise, and has a complex structure, a large volume, and adjustability and versatility. Poor, high failure rate, poor use and other defects. Moreover, the existing strength training device is connected with a connecting head on the tension rope, so as to connect different fitness equipment to meet the needs of different fitness enthusiasts, but the existing connecting head has a complicated structure and cannot be quickly disassembled and connected. And the connection is not stable, and the use efficiency is low. Moreover, as the force-applying part of the fitness equipment, the tension arm needs to adjust its angle and position along the track in order to meet the use of users with different heights or force-generating habits. However, during the use of the existing adjustment structure, the phenomenon of partial wear is relatively serious, and it is easy to cause the user to have a more obvious sense of blocking when applying force. The reason is that the pulling force exerted by the user during use cannot be completely along the axial direction of the support arm, and there must be deviation. The deviation is transmitted to the adjustment structure at the end of the support arm, resulting in a blocking feeling and eccentric wear. There is no means for solving the above-mentioned technical problems in the prior art. In addition, the existing angle adjustment method also has the defects of complex structure and poor operability. Moreover, the user performs resistance exercise by pulling the pull rope at the end of the support arm, and changes the starting position of the pull rope by adjusting the position of the support arm, so as to perform different exercise exercises and meet the needs of users with different heights or exertion habits. In specific applications, the host needs to obtain the current positions of the arms on both sides to determine whether the corresponding actions are appropriate and safe. However, there is no technical solution for effectively obtaining the position of such arms in the prior art.

SUMMARY OF THE INVENTION

The purpose of the present disclosure is to provide a tensioning device to solve the above problems in the prior art, to simplify the adjustment structure, improve the versatility, reduce the eccentric wear phenomenon, and reduce the user's sense of obstruction. Moreover, the present disclosure can solve the problem that there is no stretching fitness equipment matched with the intelligent fitness system in the prior art, fill the technical gap, reduce the volume of the stretching fitness equipment, and meet the needs of different users. Moreover, the present disclosure can optimize the structure, provide a more powerful pulling force exercise structure for the fitness machine, and enhance the adjustability, so as to improve the versatility of different user groups and at the same time improve the use effect. Moreover, the present disclosure provides a fitness accessory connector, which simultaneously fixes the first connector and the second connector through the first limiter and the second limiter, and under the premise of quick disconnection and connection, improves the connection efficiency. Stability, improve use efficiency. Moreover, the present disclosure provides an end assembly of a tension exercise support arm, so as to solve the problem that the adjustment structure of the force-applying end of the fitness equipment in the prior art is prone to eccentric wear, and the angle adjustment structure is complex, poor in operability, and prone to blockage. In order to simplify the adjustment structure, prolong the service life and reduce the user's sense of obstruction. Moreover, the present disclosure also provides a system and method for obtaining the position of the support arm of a tensile apparatus, so as to fill the technical gap in the prior art for obtaining the position of the support arm of the tension apparatus, and to achieve accurate acquisition of the position of the support arm, so as to determine whether the fitness action is suitable and effective. Security provides a well-founded purpose.

The present disclosure is realized through the following technical solutions:

A tension device, comprising a body;

Rotate the track connected to the body;

an adjustment seat that is slidingly fitted in the track;

Rotate the end connected to the adjusting seat;

a support arm fixedly connected with the end head;

a first adjustment component for adjusting the rotation angle of the track on the body;

a second adjusting assembly for adjusting the axial position of the adjusting seat in the track;

a third adjusting component, used for adjusting the rotation angle of the end head on the adjusting seat;

Elastic parts and rigid parts connected with the adjusting seat;

Wherein, when the external force on the adjusting seat is within the threshold, the adjusting seat is coupled with the track through the roller on the elastic member; when the external force on the adjusting seat exceeds the threshold, the adjusting seat is coupled with the track through the rigid member.

The rotational connection of the rail to the body, the sliding fit of the adjustment base and the rail, the rotational connection of the end head and the adjustment base, and the fixed connection of the support arm and the end head can all be realized by the prior art. In the present application, the rotation angle of the track on the body is adjusted by the first adjustment component, so that the support arm located on the track can have different angular orientations, which is suitable for users with different arm spans and different opening and closing angles when exerting force; The position of the adjustment seat in the track is adjusted through the second adjustment component to meet the needs of users of different heights; the rotation angle of the end head on the adjustment seat is adjusted through the third adjustment component to further meet the needs of different heights and hair styles. The usage needs of users who are accustomed to power. Through the joint action of the three sets of adjustment components, the present application significantly improves the versatility of the tensioning device in use, and significantly expands the scope of application.

In addition, in the prior art, the eccentric wear phenomenon of the support arm adjustment structure during use is relatively serious, and it is easy to cause the user to have a relatively obvious blocking feeling when applying force. After extensive research, the applicant found that the reason is that the pulling force exerted by the user during use cannot be completely along the axial direction of the support arm, and there must be deviation, which is transmitted to the adjustment structure at the end of the support arm, resulting in a blocking feeling. appear and eccentric wear occurs. In order to overcome this problem, the present application also provides an elastic member and a rigid member connected to the adjustment seat; when the external force borne by the adjustment seat is within the threshold value, the adjustment seat is coupled with the track through the roller on the elastic member; When the external force exceeds the threshold value, the adjusting seat is coupled with the rail through a rigid member. The elastic member and the rigid member can be directly or indirectly connected with the adjustment base, and the specific connection method is not limited herein. The elastic piece is provided with a roller, and the elastic piece provides prestress for the adjusting seat; the rigid piece can be made of any existing rigid material. The adjusting seat of the present application is assembled in the track during use, and when the external force borne by the adjusting seat is within the threshold value, the adjusting seat is coupled with the external track through the roller on the elastic member; when the external force borne by the adjusting seat exceeds the threshold value, the adjusting seat passes the The rigid member is coupled with the external rail; the threshold value refers to the critical point of force at which the elastic member is sufficiently deformed, and those skilled in the art can select and set it according to the material and shape of the specific elastic member, which will not be repeated here. . That is, when there is no external force and no external force is applied to the adjustment seat through the force-applying end of the fitness equipment, at this time, the roller extends to a more outer direction than the rigid member. When the user is not using or exerting force, the roller located on the outer side is always in contact with the aforementioned outer track; when the user is using the fitness equipment, the force is transmitted to the adjusting seat through the force-applying end, and is transmitted from the adjusting seat to the rigid part, If the force is not axial but deviated, the component force in the deviated direction will push the rigid member to one side, which will drive the elastic member to deform and generate a restoring force; if the external force is relatively small and does not exceed the threshold, it cannot be Push the rigid part into contact with the external track, and at this time, the wheel is still in contact with the external track. Since the articulated wheel has the ability to rotate, it can perform a small rotation to overcome the overall deflection of the elastic component induced by the deviation of the external force, and at the same time The rolling friction between the wheel and the external track has relatively small frictional resistance, thereby overcoming the eccentric wear phenomenon of the adjustment structure of the force-applying end of the fitness equipment in the prior art, and at the same time changing the sliding friction into rolling friction, which can also effectively reduce the user's sense of blocking; of course, If the external force is relatively large, exceeds the deformation threshold of the elastic member, and has pushed the rigid member to contact the external track, the user who is exercising at this time can obviously feel the resistance suddenly increases, indicating the direction of the user’s force application at this time. It has been seriously deviated, which in turn plays a prompting role for the user, which is beneficial to prompting the user to use the standard posture to correctly exert force for exercise; and in this state, the elastic member is severely deformed, and the force of the user's deviation is converted into elastic potential energy for storage, which is significantly Reduce the pressure between the rigid part and the external track, which can also significantly reduce the eccentric wear phenomenon. At the same time, due to the severe deformation of the elastic part, a large elastic restoring force will be generated, which can also effectively offset the eccentric wear pressure; and, in this state, The rigid part bears a lot of pressure, which can prevent the roller from being crushed and improve the overall service life of the application. Of course, in the present application, after the external force disappears, the elastic member is reset immediately, so that the rigid member is released from the contact with the external rail, and the rollers on both sides are pressed against the external rail again.

The tensioning device also includes a mirror surface located on the surface of the body. The body is provided with two reels for retracting two sets of pull ropes, a motor for providing movement resistance for the pull ropes, and a motor for making the two sets of pull ropes. A differential mechanism that can be retracted and released synchronously; slide rails are provided on the opposite side walls of the body, and the arm assembly is matched on the slide rails through an adjusting assembly, and the adjusting assembly includes a shifting mechanism and a first positioning mechanism. The blocking mechanism is used to adjust the angle of the support arm assembly relative to the slide rail, and the first positioning mechanism is used to position the support arm assembly on the adjustment assembly.

The pulling apparatus of the present disclosure further includes a mirror surface, and two winding devices are arranged inside the body for retracting and releasing two sets of pulling ropes, which are respectively used for the pulling exercise of the user's two arms, wherein a motor is arranged, and the motor in this application is used as a passive moving part , which is used to provide movement resistance for the pull rope to achieve the effect of pulling exercise. Considering that users generally exercise both arms at the same time when exercising, a differential mechanism is also set in the body, so that the two sets of pull ropes can be retracted and released synchronously. The mutual restriction of the side tension ensures the stable passive operation of the motor. The specific layout and connection method of the winding device, the motor and the differential mechanism inside the body do not belong to the scope of the protection claimed in this case, and those skilled in the art can make adaptive settings according to the specific situation, which will not be repeated here. In the present application, slide rails are arranged on the opposite side walls of the body, and the arm assembly is matched with the slide rail through the adjustment component. The support arm assembly is connected directly or indirectly with the rest of the components for the user to hold and exert force. The support arm assembly not only provides protection for the pull rope, but also plays an important guiding role for the pull rope.

For users of different heights or different usage habits, the heights they are used to are different, and the requirements for the angle of the arms are different. The above problems cannot be solved in the prior art. Therefore, the support arm assembly of the present application is connected to the adjustment assembly. The adjustment assembly includes a shift mechanism and a first positioning mechanism. In order to satisfy users of different heights or different exertion habits for normal pulling exercise, when the angle of the arm assembly is adjusted in place, the arm assembly is positioned on the adjustment component by the first positioning mechanism to ensure normal use.

Further, the adjustment assembly is slidably matched with the slide rail; the adjustment assembly further includes a second positioning mechanism, and the second positioning mechanism is used for positioning the adjustment assembly on the slide rail. The slide rail of the present application is installed vertically, and the adjusting component slides and fits on it, which can effectively adjust its own height, thereby better meeting the usage requirements of users of different heights, and significantly improving the adjustability and versatility of the present application. Of course, after the adjustment assembly is adjusted in place on the slide rail, it is positioned by the second positioning mechanism to avoid free sliding down.

Further, the second positioning mechanism includes a number of pin holes evenly distributed on the slide rail along the axis, a second adjustment rod located on the adjustment assembly, and a latch connected to the second adjustment rod, and the second adjustment rod is used for Take the pin out of the pin hole. The second positioning mechanism in this scheme is positioned by the cooperation of the plug and the pin hole, the pin holes are evenly distributed on the slide rail, and the positioning position of the adjustment component must be the position where the plug is opposite to any pin hole. Wherein, the second adjusting rod is driven by manpower to move, and the pin can be driven away from the restriction of the pin hole. The specific connection method between the second adjusting rod and the pin is not limited, and those skilled in the art can make adaptive settings according to the specific situation Yes, any existing transmission method can be used for this.

Further, the adjustment assembly is slidably matched with the slide rail through a sliding bottom plate, and a positioning hole is provided on the sliding bottom plate; and a sleeve is threadedly connected in the positioning hole, the plug pin moves through the sleeve, and the plug pin moves through the sleeve. A second elastic piece is installed between the outer wall and the inner wall of the sleeve, and the second elastic piece is used for pressing the pin in the pin hole. The elastic force of the second elastic member acts between the sleeve and the plug. Since the sleeve is threadedly connected to the positioning hole, the sleeve is fixed on the sliding bottom plate, so the elastic force of the second elastic member will drive the plug to descend, so that the plug It is stably inserted into the corresponding pin hole to realize the stable positioning of the adjusting component on the slide rail.

Further, the adjustment assembly includes two static rings facing each other, a floating ring slidably sleeved outside each static ring in the axial direction, the outer side of the static ring is fixedly connected with a limiter, and the limiter is connected with the corresponding limiter. A first elastic member is arranged between the floating rings, and the first elastic member exerts a force to move towards each other for the two floating rings; one end and two sides of the support arm assembly are respectively engaged with the two floating rings; the gear shift The mechanism is used to keep the two floating rings away from each other. The adjusting assembly includes two static rings and two floating rings, wherein the floating rings are sleeved outside the static rings and can slide along the axial direction. The outer side of the stationary ring is limited by the limiting member, and the outer side here refers to the outer side in the axial direction, that is, the side of one stationary ring facing away from the direction of the other stationary ring. An elastic piece is arranged between the limiting piece and the corresponding floating ring, and the elastic force of the elastic piece acts on the floating ring, so that the floating ring has a tendency to move toward another floating ring. One end of the arm assembly is located between the two floating rings, and its two sides are respectively engaged with the two floating rings. The elastic member is used to ensure the stable connection between the arm assembly and the adjustment component under normal conditions, and the meshing state can also ensure the angle Stablize. When the angle of the support arm assembly needs to be adjusted, the elastic force of the elastic members on both sides is overcome by the shifting mechanism, so that the two floating rings are kept away from each other, and the two sides of the support arm assembly are disengaged from the floating ring. Through the joint action of static ring, floating ring, elastic parts and other components, this solution provides a new solution for the adjustment of the arm angle in the field of tensile fitness equipment, and fills the gap in the existing technology.

Further, the first positioning mechanism includes a positioning ring at one end of the support arm assembly, and a plurality of first meshing teeth evenly distributed in an annular shape at the end face of the floating ring; the positioning ring is movably sleeved outside the two static rings and located at Between the two floating rings, a plurality of second meshing teeth are arranged on the end faces on both sides of the positioning ring, and the second meshing teeth and the first meshing teeth can engage with each other; the support arm assembly includes a first pipe body connected in sequence , a second pipe body, a third pipe body, the positioning ring is located on the third pipe body, and the interior of the positioning ring is communicated with the third pipe body; the positioning ring is provided with a wire opening.

One end of the support arm assembly is fixedly connected to the positioning ring. The inner diameter of the positioning ring matches the outer diameter of the stationary ring, so that the positioning ring can be movably sleeved outside the two stationary rings. Due to the gap between the two stationary rings, the positioning ring In essence, the two sides of the axial direction are respectively sleeved outside the two static rings, and the positioning ring is located between the two floating rings. The end faces on both sides of the positioning ring are provided with a number of second meshing teeth. The aforementioned two sides refer to the two sides along the axial direction. The number and distribution of the second meshing teeth are not limited, because the first meshing teeth are uniformly distributed in a ring shape. Therefore, it can still ensure that the arm assembly can adjust the angle evenly. Wherein, the first meshing teeth are arranged on the end face of the floating ring, where the end face must be the end face on the side facing the direction of the positioning ring, that is, the end face in the axial direction.

In addition, the arm assembly in this solution includes three tubular bodies connected in sequence, which provides a stable and reliable passage space for the pull rope. The third pipe body is used as the root of the arm assembly and is fixedly connected with the positioning ring, the first pipe body is used as a pull rope to pass through the structure to connect with other devices, and the second pipe body is the length core of the arm assembly. The interior of the positioning ring is communicated with the third pipe body, and the positioning ring is provided with a wire-passing opening, so that the pull rope enters the positioning ring from the wire-passing opening, then enters the third pipe body, and finally extends out of the first pipe body. The size of the wire-passing opening should not be too small, so as to meet the normal rotation angle range of the positioning ring and not interfere with the pull rope passing through it.

Further, the shifting mechanism includes a first adjusting rod located outside the adjusting assembly, a push portion fixed on the floating ring, and a cam in contact with the push portion and located in the axial inner direction of the floating ring for linkage. The transmission mechanism of the first adjustment rod and the two cams; the transmission mechanism is driven by the first adjustment rod to move, and drives the two cams to rotate. The adjustment lever is located outside the adjustment assembly, which is convenient for the user to toggle it. When the user needs to adjust the angle of the arm assembly, manually operate the adjustment lever to drive the transmission mechanism to move, and then the transmission mechanism drives the cams on both sides to rotate, and the cams on both sides rotate to move the floating rings on both sides away from each other. By pushing, the floating ring can be disengaged from the support arm assembly. The specific transmission mode of the transmission mechanism is not limited in this solution, as long as the adjustment lever is operated, the cam can be driven to rotate.

Further, the transmission mechanism includes a third rotating member relatively fixed to the first adjusting rod, a Y-shaped member sleeved on the end of the third rotating member, a fourth rotating member rotatably connected to the two bifurcated ends of the Y-shaped member, The second rotating shaft is fixedly connected with the fourth rotating member; the two cams are respectively fixed on the two second rotating shafts. In this scheme, the Y-shaped parts are used for bifurcation, so as to realize the effect of driving the cams on both sides to rotate at the same time. Specifically, the user manually drives the adjusting rod to rotate, which drives the third rotating member to rotate, the third rotating member rotates, and pulls the Y-shaped member to move laterally. During the movement of the Y-shaped member, the fourth rotating member is driven to rotate, thereby driving the cam to rotate. . The transmission mechanism of this scheme is ingeniously designed, which fully guarantees the synchronous action of the cams on both sides.

Further, each floating ring is provided with two axially opposite pushing parts, and each pushing part has a matching cam, when the transmission mechanism is driven by the first adjusting rod to move, it drives all the cams to rotate together; It also includes two shell plates, the shell plates are provided with through holes matching the floating rings, the two shell plates are respectively sleeved outside the two floating rings, the shell plates are fixedly connected with the corresponding limiters, and The two shell plates are fixedly connected; and the shell plates are also provided with an escape slot and/or an escape hole matched with the transmission mechanism. The two shell plates are respectively sleeved outside the two floating rings, and the inner diameter contour of the through hole matches the outer diameter contour of the floating ring. The shell plates on the left and right sides are respectively fixedly connected with the limiters on the left and right sides. Since the two shell plates are fixedly connected, the two limiters are also relatively fixed, and the stability of the entire adjustment assembly is achieved. Positioning provides a limit for the sliding of the floating ring. The transmission mechanism partially or completely passes through the shell plate, so the interference to the transmission mechanism is avoided by correspondingly opening the escape groove and/or the escape hole.

Further, several tension wheels are also connected between the two static rings; several chutes are uniformly distributed on the outer wall of the static ring, and several sliders are uniformly distributed on the inner wall of the floating ring. The sliding block is slidingly matched with the chute; the outer end face of the stationary ring is evenly distributed with a number of notches, the surface of the limiting member is provided with grooves matching the outer end surface of the stationary ring, and the groove bottom is provided with a number of notches corresponding to the notches. Matching protrusions; the outer end face of the static ring is inserted into the gap, and the protrusion enters the corresponding gap. The pull rope used for tension exercise goes around the tension wheel and enters the arm assembly to ensure a sufficient sense of resistance during the pull exercise process and to ensure stable tension of the pull rope. In addition, the solution also solidly limits the sliding fit between the static ring and the floating ring, and the fixed connection between the static ring and the limiter. Among them, the outer wall of the static ring and the inner wall of the floating ring both refer to the radial direction; the outer end face of the static ring and the surface of the limiting member refer to the axial direction.

The tension apparatus of the present disclosure further includes two winders for retracting and retracting two sets of pull ropes, a resistance component for providing movement resistance for the pull ropes, a support arm assembly for passing the pull ropes, and an adjustment Adjustment assembly for the angle of the arm assembly.

Aiming at the problem that there is no tension fitness equipment matched with the intelligent fitness system in the prior art, the present disclosure proposes a fitness equipment for tension exercise. In this disclosure, the two winders are respectively used to wind up two groups of pulling ropes. The line is released to meet the needs of the user to perform tensile exercise with both hands at the same time. When the user pulls the rope for exercise, the resistance component is used to provide movement resistance; the arm assembly is used to let the rope pass through, and the specific way of passing the rope varies. Within the scope of protection of this solution, those skilled in the art can pass the pull rope through the arm assembly in any achievable manner according to actual needs. In addition, for users with different heights or different usage habits, the respective suitable force heights are different and the requirements for the angle of the arm are different. Therefore, the application also adjusts the angle of the arm assembly through the adjustment component to meet different needs. The user performs the pulling exercise normally. When the application is used, the pull rope is released from the winder, passes through the adjustment component after passing through the resistance component, enters the support arm assembly, and finally passes through the support arm assembly, directly or indirectly with the components for the user to hold and apply force. Just connect. The present application provides the stretching fitness equipment matched with the intelligent fitness system, which fills the gap in the prior art.

Further, the resistance assembly includes a biaxial motor and a differential mechanism matching the biaxial motor, the two windings are respectively connected to the two output ends of the biaxial motor, and the differential mechanism is installed on the motor casing. and the differential mechanism cooperates with the two output ends of the dual-shaft motor at the same time; the differential mechanism is used to make the rotational speeds of the two output ends equal. The differential structure used in the fitness equipment in the prior art is bulky and takes up space, and cannot meet the requirements for the gradual miniaturization and family use of fitness equipment. When used in an intelligent fitness system, the entire system is bulky and difficult to be used by families. Accepted by users, it is not conducive to promotion and use. To this end, this solution integrates the differential mechanism on the motor casing and fits between the two output ends of the biaxial motor, so as to overcome the prior art that the differential is arranged separately from the motor and uses belts and chains. The bulky defects caused by traditional methods of transmission are of great significance to the miniaturization and family development of tensile fitness equipment, especially suitable for intelligent fitness systems, which can significantly reduce the volume of the intelligent fitness system, which is beneficial to the family. accepted by the user.

Further, the differential mechanism includes a first rotating member fixedly connected to the two output ends of the biaxial motor, and a second rotating member located between the two first rotating members; the bevel gear on the second rotating member is at the same time. meshes with the bevel gears on the two first rotating parts; there are two second rotating parts, and the two second rotating parts are located on opposite sides of the motor casing; the motor casing is fixedly connected to the mounting parts, and the second rotating parts are The two rotating members are rotatably connected to the mounting member through a rotating shaft; the rotating shaft is fixedly connected to the bobbin. In this solution, the second rotating member meshes with the two first rotating members on both sides at the same time through bevel gears. When in use, the pulling rope is wrapped around the second rotating member. When the user pulls the pulling rope, the second rotating member is driven. Rotating, the second rotating member drives the first rotating members on both sides to rotate, which can drive the output end of the motor to rotate, thereby realizing the effect of using the motor to provide motion resistance. The bevel gear is directly meshed for transmission, which can effectively solve the problem of low transmission efficiency using belts, chains, etc. in the prior art, and reduce energy loss in the transmission process. The two second rotating parts are located on opposite sides of the motor housing, so that the arms of the two second rotating parts are equal. When using both hands for pulling exercise, the pulling force on both sides can be mutually restricted by the motor to ensure that the pulling force on both sides is not equal. Use at the same time as normal exercise. In addition, if flexible connection methods such as belts and chains are used between the dual-shaft motor and the differential, the flexibility of the connection structure itself is prone to deformation, resulting in the moment when the user starts to apply the tension and the moment when the tension is just released. The sense of loss of force is generated, and the source of this sense of loss of force is the process of deforming or recovering the deformation of the flexible connecting part. In this solution, a bevel gear meshes with the bevel gears on both sides at the same time, so the entire transmission process is extremely rigid, which can reduce the aforementioned loss of force, which is conducive to obtaining better use effects. In addition, the mounting piece is fixedly connected with the motor housing, the mounting piece provides a mounting position for the rotating shaft and the second rotating piece, and the rotating shaft and the mounting piece are rotatably matched to realize the free rotation of the second rotating piece. The reel is fixedly connected to the rotating shaft for bypassing the pull rope released from the spooler, so that when the pull rope is pulled by the exerciser, the pulling force of the pull rope can drive the second rotating member to rotate. Of course, the drawstring can be wound on the spool by any existing winding method.

Further, the winder is rotatably fitted on the output end of the biaxial motor; it also includes a mounting seat and two supports fixed on the mounting seat, the biaxial motor is located between the two supports, and the dual The two output ends of the shaft motor are respectively rotatably connected to the two supports; a plurality of mounting holes are provided on the mounting seat. The spooler rotates freely on the output end of the dual-axis motor, so that the spooler only plays the function of retracting and unwinding without disturbing the normal rotation of the motor. The mounting seat is used to install the resistance component, and can be installed to any suitable position in the specific application. In this solution, the dual-axis motor is installed between two supports.

Further, one end of the support arm assembly is connected to an adjustment assembly, the adjustment assembly includes a shift mechanism and a positioning mechanism, and the shift mechanism is used to adjust the angle of the support arm assembly compared with the adjustment assembly, the The positioning mechanism is used to position the arm assembly on the adjustment assembly. In this application, the pull rope needs to pass through the support arm, and then directly or indirectly connect with other components for users to hold and exert force. The support arm not only provides protection for the pull rope, but also plays an important guiding role for the pull rope. However, for users with different heights or different usage habits, the heights they are used to are different, and the requirements for the angle of the arms are different. The above problems cannot be solved in the prior art. Therefore, in this solution, one end of the support arm assembly is connected to the adjustment assembly, and the other end of the support arm assembly must be directly or indirectly connected with the component for the user to hold and apply force. , of course, the aforementioned connection mode of the other end does not belong to the scope of protection claimed in this application. The adjustment assembly in this application includes a shifting mechanism and a positioning mechanism. The shifting mechanism is used to adjust the angle of the support arm assembly compared to the adjustment assembly, so as to meet the needs of users with different needs for normal pulling exercise. After the angle is adjusted in place, the support arm assembly is positioned on the adjustment assembly by the positioning mechanism to ensure normal use.

Further, the adjustment assembly includes two static rings facing each other, a floating ring slidably sleeved outside each static ring in the axial direction, the outer side of the static ring is fixedly connected with a limiter, and the limiter is connected with the corresponding limiter. An elastic piece is arranged between the floating rings, and the elastic piece exerts a force close to each other for the two floating rings; one end and two sides of the supporting arm assembly are respectively engaged with the two floating rings; the shifting mechanism is used to make The two floating rings are separated from each other.

The solution includes two static rings and two floating rings, wherein the floating rings are sleeved outside the static rings and can slide along the axial direction. The outer side of the stationary ring is limited by the limiting member, and the outer side here refers to the outer side in the axial direction, that is, the side of one stationary ring facing away from the direction of the other stationary ring. An elastic piece is arranged between the limiting piece and the corresponding floating ring, and the elastic force of the elastic piece acts on the floating ring, so that the floating ring has a tendency to move toward another floating ring. One end of the arm assembly is located between the two floating rings, and its two sides are respectively engaged with the two floating rings. The elastic member is used to ensure the stable connection between the arm assembly and the adjustment component under normal conditions, and the meshing state can also ensure the angle Stablize. When the angle of the support arm assembly needs to be adjusted, the elastic force of the elastic members on both sides is overcome by the shifting mechanism, so that the two floating rings are kept away from each other, and the two sides of the support arm assembly are disengaged from the floating ring. Through the joint action of the static ring, the floating ring and the elastic parts, this solution provides a new solution for the adjustment of the arm in the field of tensile fitness equipment, and fills the gap in the existing technology.

Further, the positioning mechanism includes a positioning ring located at one end of the support arm assembly, and a plurality of annularly distributed first meshing teeth located at the end face of the floating ring; the positioning ring is movably sleeved outside the two static rings and located in the two Between the floating rings, a plurality of second meshing teeth are arranged on the end faces on both sides of the positioning ring, and the second meshing teeth and the first meshing teeth can engage with each other; The second pipe body and the third pipe body, the positioning ring is located on the third pipe body, and the interior of the positioning ring is communicated with the third pipe body; the positioning ring is provided with a wire opening.

One end of the support arm assembly is fixedly connected to the positioning ring. The inner diameter of the positioning ring matches the outer diameter of the stationary ring, so that the positioning ring can be movably sleeved outside the two stationary rings. Due to the gap between the two stationary rings, the positioning ring In essence, the two sides of the axial direction are respectively sleeved outside the two static rings, and the positioning ring is located between the two floating rings. The end faces on both sides of the positioning ring are provided with a number of second meshing teeth. The aforementioned two sides refer to the two sides along the axial direction. The number and distribution of the second meshing teeth are not limited, because the first meshing teeth are uniformly distributed in a ring shape. Therefore, it is still possible to ensure that the arm assembly is evenly adjusted in angle. Wherein, the first meshing teeth are arranged on the end face of the floating ring, where the end face must be the end face on the side facing the direction of the positioning ring, that is, the end face in the axial direction.

In this solution, the arm assembly includes three tubes connected in sequence, which provides a stable and reliable passage space for the pulling rope for tensile exercise. The third pipe body acts as the root of the arm assembly and is fixedly connected to the positioning ring, the first pipe body acts as a pull rope to pass through the structure to connect with other devices, and the second pipe body is the length core of the arm assembly. The interior of the positioning ring is communicated with the third pipe body, and the positioning ring is provided with a wire-passing opening, so that the pull rope enters the positioning ring from the wire-passing opening, then enters the third pipe body, and finally extends out of the first pipe body. The size of the wire-passing opening should not be too small, so as to meet the normal rotation angle range of the positioning ring and not interfere with the pull rope passing through it.

Further, the shifting mechanism includes an adjustment rod located outside the adjustment assembly, a push portion fixed on the floating ring, and a cam in contact with the push portion and located in the axial inner direction of the floating ring for linking the floating ring. A transmission mechanism of an adjustment rod and two cams; the transmission mechanism is driven by the adjustment rod to move, and drives the two cams to rotate. The adjustment lever is located outside the adjustment assembly for easy toggle operation by the user. When the user needs to adjust the angle of the arm assembly, manually operate the adjustment lever to drive the transmission mechanism to move, and then the transmission mechanism drives the cams on both sides to rotate, and the cams on both sides rotate to move the floating rings on both sides away from each other. By pushing, the floating ring can be disengaged from the support arm assembly. The specific transmission mode of the transmission mechanism is not limited in this solution, as long as the adjustment lever is operated, the cam can be driven to rotate.

Further, the transmission mechanism includes a third rotating member relatively fixed to the adjusting rod, a Y-shaped member sleeved on the end of the third rotating member, a fourth rotating member rotatably connected to the two bifurcated ends of the Y-shaped member, and the third rotating member. The four rotating parts are fixedly connected to the second rotating shaft; the two cams are respectively fixed on the two second rotating shafts; each floating ring is provided with two axially opposite pushing parts, and each pushing part has a matching cam , when the transmission mechanism is driven by the adjusting rod, it drives all the cams to rotate together; it also includes two shell plates, which are provided with through holes matching the floating ring, and the two shell plates are respectively sleeved on the two shell plates. Outside the floating ring, the shell plate is fixedly connected with the corresponding limiter, and the two shell plates are fixedly connected; the shell plate is also provided with a relinquishment slot and/or a relinquishment slot matched with the transmission mechanism hole.

In this scheme, the Y-shaped parts are used for bifurcation, so as to realize the effect of driving the cams on both sides to rotate at the same time. Specifically, the user manually drives the adjusting rod to rotate, which drives the third rotating member to rotate, the third rotating member rotates, and pulls the Y-shaped member to move laterally. During the movement of the Y-shaped member, the fourth rotating member is driven to rotate, thereby driving the cam to rotate. . The transmission mechanism of this scheme is ingeniously designed, which fully guarantees the synchronous action of the cams on both sides. The two shell plates are respectively sleeved outside the two floating rings, and the inner diameter contour of the through hole matches the outer diameter contour of the floating ring. The shell plates on the left and right sides are respectively fixedly connected with the limiters on the left and right sides. Since the two shell plates are fixedly connected, the two limiters are also relatively fixed, and the stability of the entire adjustment assembly is achieved. Positioning provides a limit for the sliding of the floating ring. The transmission mechanism partially or completely passes through the shell plate, so the interference to the transmission mechanism is avoided by correspondingly opening the escape groove and/or the escape hole.

Further, a number of tension wheels are connected between the two static rings; the tension wheels are used for the pull rope to pass around and then enter the arm assembly to ensure a sufficient sense of resistance during the pulling exercise process and to ensure that the tension of the pull rope is stable.

The outer wall of the static ring is annularly distributed with a plurality of chutes, and the inner wall of the floating ring is annularly distributed with a plurality of sliding blocks. A number of gaps are evenly distributed, the surface of the limiting member is provided with a groove that matches the outer end face of the static ring, and the bottom of the groove is provided with a number of protrusions that match the gap; the outer end surface of the static ring is inserted into the gap , the protrusion enters the corresponding gap. This solution specifically limits the sliding fit method between the static ring and the floating ring, and the fixed connection method between the static ring and the limiter. Among them, the outer wall of the static ring and the inner wall of the floating ring both refer to the radial direction; the outer end face of the static ring and the surface of the limiting member refer to the axial direction.

The tensile apparatus of the present disclosure further includes a support arm structure, the support arm structure includes at least one slot set on the adjustment seat; a positioning block coupled with the slot set on the end; the adjustment base and the The ends are connected in rotation, and the positioning block can be controlled to enter and exit the slot. When the positioning block enters the slot, the end and the adjustment seat are locked in position. When the positioning block is pulled out of the slot, the end can rotate around the adjustment seat. .

Aiming at the problems in the prior art that the adjustment structure of the force-applying end of the fitness equipment is prone to eccentric wear and a sense of obstruction, the present disclosure proposes a support arm structure of the fitness equipment. The end passes through the positioning block and several slots on the adjustment seat Coupling is carried out one by one to realize the rotation of the end angle, and then drive the support arm to adjust the angle. The present application also includes elastic pieces and rigid pieces connected to the adjustment base. The elastic pieces and the rigid pieces can be directly or indirectly connected to the adjustment base, and the specific connection method does not belong to the protection scope claimed in this case. The elastic piece is provided with a roller, and the elastic piece provides prestress for the adjusting seat; the rigid piece can be made of any existing rigid material. The adjusting seat of the present application is assembled in the outer track when in use, and when the external force borne by the adjusting seat is within the threshold value, the adjusting seat is coupled with the external track through the roller on the elastic member; when the external force borne by the adjusting seat exceeds the threshold value, the adjusting seat The rigid part is coupled with the external track; the threshold refers to the critical point of force at which the elastic part is sufficiently deformed, and those skilled in the art can select and set it according to the material and shape of the specific elastic part, which is not described here. Repeat. That is, when there is no external force and no external force is applied to the adjustment seat through the force-applying end of the fitness equipment, at this time, the roller extends to a more outer direction than the rigid member. When the user is not using or exerting force, the roller located on the outer side is always in contact with the aforementioned outer track; when the user is using the fitness equipment, the force is transmitted to the adjusting seat through the force-applying end, and is transmitted from the adjusting seat to the rigid part, If the force is not axial but deviated, the component force in the deviated direction will push the rigid member to one side, which will drive the elastic member to deform and generate a restoring force; if the external force is relatively small and does not exceed the threshold, it cannot be Push the rigid part into contact with the external track, and at this time, the wheel is still in contact with the external track. Since the articulated wheel has the ability to rotate, it can perform a small rotation to overcome the overall deflection of the elastic component induced by the deviation of the external force, and at the same time The rolling friction between the wheel and the external track has relatively small frictional resistance, thereby overcoming the eccentric wear phenomenon of the adjustment structure of the force-applying end of the fitness equipment in the prior art, and at the same time changing the sliding friction into rolling friction, which can also effectively reduce the user's sense of blocking; of course, If the external force is relatively large, exceeds the deformation threshold of the elastic member, and has pushed the rigid member to contact the external track, the user who is exercising at this time can obviously feel the resistance suddenly increases, indicating the direction of the user’s force application at this time. It has been seriously deviated, which in turn plays a prompting role for the user, which is beneficial to prompting the user to use the standard posture to correctly exert force for exercise; and in this state, the elastic member is severely deformed, and the force of the user's deviation is converted into elastic potential energy for storage, which is significantly Reduce the pressure between the rigid part and the external track, which can also significantly reduce the eccentric wear phenomenon. At the same time, due to the severe deformation of the elastic part, a large elastic restoring force will be generated, which can also effectively offset the eccentric wear pressure; and, in this state, The rigid part bears a lot of pressure, which can prevent the roller from being crushed and improve the overall service life of the application. Of course, in the present application, after the external force disappears, the elastic member is reset immediately, so that the rigid member is released from the contact with the external rail, and the rollers on both sides are pressed against the external rail again. The application can be used for the adjustment structure of the force-applying end of all kinds of fitness equipment, including but not limited to the adjustment structure of the support arm of the tension equipment.

Further, each elastic piece is rotatably connected with two rollers, and the two rollers are respectively located at both ends of the elastic piece. Under the action of external force, it is beneficial to compress the two ends of the elastic piece inward, so that the elastic piece starts to deform from the two ends, which ensures that the elastic piece has good deformation and recovery ability.

Further, the elastic member includes two strips, the two strips are fixedly connected by two connecting pieces, and the two connecting pieces divide the area between the two strips into the first installation portion, The second mounting portion and the third mounting portion, the rollers are arranged on the first mounting portion and the third mounting portion, and the rigid member passes through the second mounting portion. In this scheme, the elastic parts are specially designed, including two strip parts, and the two strip parts are connected by two connecting parts, and the two strip parts and the two connecting parts form an integral structure of fixed connection. The first installation part and the third installation part are respectively located on both sides of the elastic member, the first installation part is open on one side away from the second installation part, and the roller is installed in the first installation part, and similarly the third installation part is far away from the second installation part. One side of the part is open, and the roller is installed in the third installation part; the rigid part passes through the second installation part. In this solution, the rollers are installed by the first mounting part and the third mounting part, so that the rollers are located at both ends, which is beneficial to compress the two ends of the elastic member inward under the action of external force, so that the elastic member starts to deform from both ends, ensuring that the elastic member is deformed from both ends. The elastic part has good deformation and recovery ability; at the same time, the second mounting part provides installation and positioning space for the rigid part, so that the four directions of the rigid part are respectively limited by two strips and two connecting parts, so as to ensure the rigidity of the rigid part. The position is stable. The elastic part of this scheme can realize the effective connection between the rigid part and each roller, ensure strong structural integrity, and has strong adaptability to overcoming the eccentric wear phenomenon of the adjusting structure of the force-applying end of the fitness equipment.

Further, the roller is rotatably connected to the installation shaft, both ends of the installation shaft are provided with first notches, and the two strips are respectively inserted into the first notches at both ends of the installation shaft. In this scheme, for each roller, it is fixedly connected with the two strips through the installation shaft. The eccentric wear occurs in the direction of the connecting line of the root strip. This connection method also overcomes the problem of difficulty in installing the roller when the thickness of the strip is relatively thin, and ensures that the roller can stably roll between the two strips.

Further, a second notch facing the first mounting portion and the third mounting portion is defined on the strip, and the second notch is inserted into the first notch on the mounting shaft. The second notch plays a role of positioning the installation shaft. The first notch and the second notch are matched and inserted into each other, so as to prevent the installation shaft from sliding on the strip and improve the use stability of the elastic member of the present application.

Further, two bosses are sleeved on the installation shaft, and the roller is located between the two bosses. The two bosses limit the position of the roller, so that the roller can only be sleeved on the installation shaft between the two bosses, so as to avoid the contact between the roller and the strips on both sides to interfere with its normal rolling.

Further, a limit mechanism is provided on the rigid member, and the limit mechanism is used to limit the sliding of the elastic member on the rigid member. The position-limiting mechanism ensures that the relative position of the elastic piece and the rigid piece is stable, and prevents the elastic piece from sliding from the rigid piece to both sides and falling off.

Further, the limit mechanism includes a first limit rod and a second limit rod penetrating the rigid member, and the two strips on each elastic member are located at the first limit rod and the second limit rod. between the rods. In this solution, the elastic member is limited by the first limit rod and the second limit rod penetrating the rigid member. Specifically, for each strip member, it is clamped between the first limit rod and the second limit rod. between the two limit rods to prevent them from sliding to both sides. In addition, the limiting mechanism in this solution can not only play a limiting role, but also effectively transmit the force; specifically, when the user exerts a force to deflect, the rigid member is pushed to move to one side by the bracket, and the movement of the rigid member The middle part of the corresponding strip is inevitably deformed, and since the rollers on both sides of the elastic part are still in contact with the outer rail, the elastic part can be deformed to bend toward the middle position as a whole.

Further, a support arm structure of a fitness machine of the present application is located in a track; both sides of the rigid member extending outward and the rollers can be slidably matched with the track. In the natural state, the rollers are matched with the rails, and the rollers can roll in the rails; when the external force is large, the corresponding sides of the rigid parts are in contact with the rails. The track in this solution can be any track used in the prior art for adjusting the force-applying end of the fitness equipment.

Further, the track is arc-shaped, and protrusions are provided on both sides of the inner wall of the track; through grooves are set on both sides of the rigid member extending outward, and an annular groove is set on the radial outer side of the roller, and the through groove is set. , and the annular grooves are matched with the protrusions. The protrusions on both sides of the inner wall of the track can provide a stable moving path for the adjustment of the force-applying end of the fitness equipment; the annular groove on the radially outer side wall of the roller matches the protrusion to ensure that the roller can roll stably in the track. The side through grooves are matched with the protrusions to ensure that the rigid element can slide stably in the track, and to ensure the stability and reliability of the present application when it is used for the adjustment of the force-applying end of the fitness equipment.

The tensile apparatus of the present disclosure further includes a support arm position acquisition system, and the support arm position acquisition system includes:

The first detection unit is used to detect the rotation angle of the track around its own axis;

The second detection unit is used to detect the position of the support arm translation along the track;

The third detection unit is used to detect the rotation angle of the support arm around the intersection point of the support arm and the track;

The upper computer is signal-connected with the first detection unit, the second detection unit and the third detection unit.

In the support arm position acquisition system proposed in the present disclosure, the first detection unit, the second detection unit, and the third detection unit detect the three degrees of freedom of the support arm, and respectively obtain the rotation angle of the track around its own axis and the rotation angle of the support arm along the track. The position of the translation, the angle that the arm rotates around the intersection of the arm and the track. The present disclosure obtains the position of the support arm accurately through the joint action of the three detection units, and provides a sufficient basis for the upper computer to judge whether the fitness action is suitable and safe, thereby filling the gap in the prior art. The signal connection mode between the first detection unit, the second detection unit, and the third detection unit and the upper computer may be wired connection or wireless connection.

Further, the first detection unit includes a photoelectric sensor or an angle sensor. Among them, the photoelectric sensor/angle sensor can adopt the existing equipment.

Further, the second detection unit includes a plurality of sensing devices located on the track, and a generating device located at the translation end of the support arm along the track, and the sensing device can sense the generating device. In this scheme, several sensing devices are arranged on the track. When the support arm is translated to an appropriate distance along the track, it can be sensed by a corresponding sensing device. The sensing device sends a detection signal to the upper computer, and the upper computer can judge by the signal source position. The position where the arm translates along the track.

Further, the induction device is a Hall element, and the generating device is a permanent magnet block.

Further, a plurality of pin holes are arranged on the track in the axial direction, and an induction device is arranged in each pin hole. The end of the support arm connected with the track can be provided with a pin matching the pin hole, which is convenient for inserting into the pin hole to realize the fixation at the set gear position, and also facilitates the detection of the second detection unit.

Further, the third detection unit includes an acceleration measurement module, and the acceleration measurement module is used to measure the acceleration of the support arm in the X-axis and Y-axis directions; wherein the Y-axis is parallel to the support-arm axis, and the X-axis is perpendicular to the Y-axis. In this scheme, the current rotation angle of the support arm is judged by the angle of the XY axis acceleration reading, the detection data of the acceleration measurement module is sent to the upper computer, and the upper computer can obtain the up and down rotation angle of the support arm.

The method for obtaining the position of the support arm of the tensile apparatus of the present disclosure:

The first detection unit detects the rotation angle of the track around its own axis;

The second detection unit detects the position where the support arm translates along the track;

The third detection unit detects the rotation angle of the support arm around the intersection point of the support arm and the track;

The host computer receives the detection signals of the first detection unit, the second detection unit, and the third detection unit, and records and/or outputs the detection results.

Further, the first detection unit is located below the track, and reads the rotation angle of the track in real time and sends it to the host computer.

Further, when the end of the support arm connected to the track is inserted into a corresponding pin hole in the track through a pin, the second detection unit located in the pin hole detects the pin, and sends a detection signal to the upper computer, and the upper computer passes the signal. The source position determines the position where the arm translates along the track.

Further, the third detection unit includes two acceleration measurement modules respectively used to detect the arms on both sides, and the acceleration measurement modules are used to measure the acceleration of the corresponding arms in the X-axis and Y-axis directions; and when the two When the arms are perpendicular to the ground, the X-axis directions corresponding to the two acceleration measurement modules are opposite; after the host computer receives the signal from the third detection unit, it first judges which arm the data comes from through the X-axis data; When the X-axis data of the side arms are consistent, it is judged that the arms on both sides are perpendicular to the ground.

In this solution, since the X-axis corresponding to the acceleration measurement modules of the left and right arms is reversed, it can be judged by the X-axis data whether the data comes from the left arm or the right arm. When the left and right arms are vertical, the X-axis readings are consistent, and the The left and right arms need to be distinguished.

Further, the first adjustment assembly includes a fifth rotating shaft fixedly connected with the track, a toothed plate is fixedly sleeved on the fifth rotating shaft, and also includes a toothed member for matching with the toothed plate, so The toothed member is driven by a driving device to engage and disengage from the toothed disc. The track rotates synchronously with the rotation of the fifth rotating shaft to achieve the purpose of adjusting the track angle. When the track angle does not need to be adjusted, the toothed member is driven by the driving device to mesh with the toothed plate. At this time, due to the limit of the toothed member, the toothed plate cannot be rotated, so that neither the fifth rotating shaft nor the track can be rotated. ; When the track needs to be adjusted, the drive device drives the toothed piece to disengage from the toothed plate, and the track angle can be flexibly adjusted at this time. The driving device in this solution can be realized by any power equipment capable of driving the action of the toothed member in the prior art.

Further, the driving device is a solenoid valve arranged in the body. In this scheme, the solenoid valve is used as the power equipment for driving the action of the toothed piece, which is convenient for receiving signals to perform rapid action.

Further, the second adjustment assembly includes a number of pin holes axially arranged on the track, a positioning pin connected to the adjustment seat, and the positioning pin can be inserted into the pin hole; The handle that describes the positioning pin in and out of the pin hole. In this scheme, the rail and the adjusting seat are connected through pin holes and matching locating pins, each pin hole provides a positioning gear, and the adjusting seat moves to the pin hole in the proper position, so as to be directly or indirectly connected with the adjusting seat The positioning pin can be inserted into the pin hole. The entry and exit of the positioning pin can be controlled by the handle, which is convenient for the user to operate and use flexibly. The solution solves the problems of complex structure and poor operability of the axial position adjustment method of the support arm in the prior art, and achieves the purpose of simplifying the axial adjustment structure and providing users with a more convenient axial adjustment method.

Further, it also includes a C-shaped piece rotatably connected to the adjustment seat, the handle is fixedly connected to the C-shaped piece, the positioning pin is detachably connected to the C-shaped piece; the gap between the C-shaped piece and the adjustment seat is The handle and the C-shaped piece are connected through a rotation through the fourth shaft; the handle and the C-shaped piece are connected by bolts; the handle is provided with a hook part, and a first threaded hole is formed on the hook part; The positioning groove matched with the hook portion is provided with a second threaded hole in the positioning groove; the first threaded hole and the second threaded hole are matched with each other, when the hook portion hooks the positioning groove, the first threaded hole Opposite to the second threaded hole. When the user toggles the handle, the C-shaped piece is driven to rotate, and the C-shaped piece drives the positioning pin to move, thereby realizing the positioning pin entering and exiting the pin hole. The fixed connection between the handle and the C-shaped part is realized by bolts, which is convenient for installation, use, repair and replacement. When this solution is used, the positioning groove on the C-shaped piece is hooked by the hook on the handle, and the first threaded hole is facing the second threaded hole at this time, and the connection can be made by bolts. Through the arrangement of the hook portion and the positioning groove, the connection stability between the handle and the C-shaped piece can be improved, even if the bolt is loose, it can be hooked; at the same time, the positioning effect can be provided.

Further, the C-shaped piece is provided with a clip, and the end of the positioning pin is provided with a notch for clamping the clip; the positioning pin includes a pin, and one end of the pin is fixedly connected to the mounting piece, The other end is movably sleeved with a pin cylinder; the gap is located on the mounting part, and a spring is connected between the pin cylinder and the mounting part; the positioning pin also includes a sleeve for covering the pin shaft, and the top of the sleeve is fixed connecting flange, the mounting piece is fixed on the flange, the pin shaft passes through the flange and enters the mounting piece, the pin cylinder is movably inserted into the sleeve; the spring is sleeved outside the pin shaft, the The two ends of the spring are respectively fixedly connected with the pin cylinder and the mounting piece. The clip on the C-shaped piece is clamped by the gap at the end of the positioning pin, so as to realize the detachable connection between the C-shaped piece and the positioning pin, which is very convenient for disassembly and replacement. When this solution is used, the pin cylinder is inserted into the pin hole. Since there is a spring between the pin cylinder and the mounting part, the spring can push the pin cylinder into the pin hole when not in operation to ensure stable connection; the return length of the spring is extremely long. value, when the positioning pin is taken out of the pin hole, it is only necessary to make the upward distance of the C-shaped part greater than the extreme value. The sleeve is fixedly connected with the flange, and the mounting piece is fixed on the flange to form the external structure of the positioning pin in this solution. One end of the pin cylinder is inserted into the sleeve and then sleeved outside the pin shaft. , to prevent the mounting parts from entering the corresponding pin holes.

Further, the third adjustment assembly includes a plurality of slots arranged on the adjustment seat and distributed annularly along the rotation direction of the end head, the end head is provided with a positioning block matching the slot, and the positioning block can be into and out of the slot. In this solution, the annular distribution of the slot matches the movement trajectory of the end of rotation, thereby ensuring that the positioning block on the end can be rotated to face any slot. The shape of the positioning block matches the shape of the slot, so that the positioning block can be inserted into and taken out from the slot. When in use, the positioning block enters a certain slot to locate the angle of the end, that is, the angle of the arm connected to the end is positioned; if you need to adjust the angle of the end, you only need to move the positioning block from the current slot. Take it out, turn the end to adjust the angle so that the positioning block is aligned with one of the remaining slots, and then insert the positioning block into the slot. In this solution, each slot can correspond to a gear for adjusting the angle of the end head, and the adjustment of the end head angle can be realized only by controlling the insertion and removal of the positioning block, which is significantly simplified compared with the prior art. The structure greatly facilitates the use of the user and improves the operability.

Further, the opposite sides of the adjustment seat are provided with a plurality of annularly distributed slots, the end head includes two positioning blocks, and the two positioning blocks correspond to the slots on both sides of the adjustment seat respectively; the end head is connected to the adjustment seat. The seat is rotatably connected through the third rotating shaft. The end head is matched with the slots on both sides of the adjustment seat through the positioning blocks on both sides to improve the connection stability of the end head; when the angle of the end head needs to be adjusted, it is only necessary to remove the positioning blocks on both sides from the corresponding plug It can be taken out from the slot.

Further, two adjustment rods are arranged inside the end head, and the two positioning blocks are respectively located on the two adjustment rods; and each positioning block is located at one end of the corresponding adjustment rod, and the two adjustment rods are in a scissor structure; two The adjusting rods are mutually hinged around a first rotating shaft, and the first rotating shaft is located between the two ends of the adjusting rod; one end of the two adjusting rods away from the direction of the positioning block is rotatably connected with a first connecting piece; the two first connecting pieces are mutually connected It is hinged around the second rotating shaft; it also includes a second connecting piece located in the end head, the second rotating shaft is mounted on one end of the second connecting piece, and the other end of the second connecting piece is axially oriented away from the adjusting rod along the end head and the end of the second connecting piece away from the second rotating shaft is connected to a spring with the inner wall of the end head; the surface of the end head is provided with a second through groove that matches the second connecting piece, the second The length direction of the through slot is parallel to the axis of the end head, and the second connecting piece can move in the second through slot.

The adjusting rod is used to assemble the positioning block, and the user can make the positioning block enter and exit the slot by controlling the movement of the adjusting rod. Of course, in this solution, when the user needs to adjust the angle, he needs to control the two adjustment rods to perform the action at the same time. The scissor structure in this solution can be realized by using the existing technology, such as a structure such as scissors. The two adjusting rods are in a scissor structure, which is convenient for the two adjusting rods to act synchronously, so that the positioning blocks on both sides can be opened and closed synchronously. When the user pulls a certain positioning block outwards to disengage it from the slot, the adjusting rod rotates around the first rotating shaft, driving the first connecting piece to rotate inwardly, driving the second rotating shaft to move, and the movement of the second rotating shaft drives the other One connecting piece also rotates inwardly, and then drives the other adjusting rod to rotate, so that the two adjusting rods are opened and the positioning blocks on both sides are far away from each other. Control of side mounting blocks. The second connecting piece provides an installation station for the second rotating shaft, and it is convenient to connect the spring. The spring is located between the inner wall of the end head and the second connecting piece. When it is used to pull the adjusting rod outward, the second rotating shaft moves and stretches the spring. , after the user unloads the force, the two adjusting rods are automatically retracted and reset by using the restoring force of the spring, so that the two positioning blocks are automatically inwardly approached and inserted into the corresponding slots stably. The second through slot is used to provide a moving space for the second connecting piece, and the groove wall of the second through slot can limit the position of the second connecting piece.

Further, the elastic member includes two strips, the two strips are fixedly connected by two connecting pieces, and the two connecting pieces divide the area between the two strips into the first installation portion, a second installation part and a third installation part, the rollers are arranged on the first installation part and the third installation part, and the rigid member passes through the second installation part;

The roller is rotatably connected to the installation shaft, both ends of the installation shaft are provided with first gaps, and two strips are respectively inserted into the first gaps at both ends of the installation shaft; The second notch of the first installation part and the third installation part, the second notch is inserted into the first notch on the installation shaft; the installation shaft is sleeved with two bosses, and the roller is located between the two bosses. between;

A limit mechanism is arranged on the rigid piece, and the limit mechanism is used to limit the sliding of the elastic piece on the rigid piece; the limit mechanism includes a first limit rod and a second limit rod penetrating the rigid piece, The two strips on each elastic piece are located between the first limit rod and the second limit rod.

In this scheme, the elastic parts are specially designed, including two strip parts, and the two strip parts are connected by two connecting parts, and the two strip parts and the two connecting parts form an integral structure of fixed connection. The first installation part and the third installation part are respectively located on both sides of the elastic member, the first installation part is open on one side away from the second installation part, and the roller is installed in the first installation part, and similarly the third installation part is far away from the second installation part. One side of the part is open, and the roller is installed in the third installation part; the rigid part passes through the second installation part. In this solution, the rollers are installed by the first mounting part and the third mounting part, so that the rollers are located at both ends, which is beneficial to compress the two ends of the elastic member inward under the action of external force, so that the elastic member starts to deform from both ends, ensuring that the elastic member is deformed from both ends. The elastic part has good deformation and recovery ability; at the same time, the second mounting part provides installation and positioning space for the rigid part, so that the four directions of the rigid part are respectively limited by two strips and two connecting parts, so as to ensure the rigidity of the rigid part. The position is stable. The elastic part of this scheme can realize the effective connection between the rigid part and each roller, ensure strong structural integrity, and has strong adaptability to overcoming the eccentric wear phenomenon of the adjusting structure of the force-applying end of the fitness equipment.

In this scheme, for each roller, it is fixedly connected with the two strips through the installation shaft. The eccentric wear occurs in the direction of the connecting line of the root strip. This connection method also overcomes the problem of difficulty in installing the roller when the thickness of the strip is relatively thin, and ensures that the roller can stably roll between the two strips.

Wherein, the second notch plays a role of positioning the installation shaft, the first notch and the second notch are matched and inserted into each other, so as to prevent the installation shaft from sliding on the strip member, and improve the use stability of the elastic member of the present application. The two bosses limit the position of the roller, so that the roller can only be sleeved on the installation shaft between the two bosses, so as to avoid the contact between the roller and the strips on both sides to interfere with its normal rolling.

The relative position of the elastic piece and the rigid piece is guaranteed to be stable through the limiting mechanism, so as to avoid the elastic piece sliding from the rigid piece to both sides and falling off. The elastic member is limited by the first limit rod and the second limit rod penetrating the rigid member. Specifically, for each strip, it is clamped between the first limit rod and the second limit rod. between the rods to prevent them from sliding sideways. In addition, the limiting mechanism in this solution can not only play a limiting role, but also effectively transmit the force; specifically, when the user exerts a force to deflect, the rigid member is pushed to one side by the bracket, and the movement of the rigid member The middle part of the corresponding strip is inevitably deformed, and since the rollers on both sides of the elastic part are still in contact with the outer rail, the elastic part can be deformed to bend toward the middle position as a whole.

The tensile apparatus of the present disclosure also includes a connection device, such as a fitness accessory connection head. The connecting device includes a first connecting head and a second connecting head, the first connecting head is provided with a first limiting member, and the second connecting head is provided with a first limiting groove corresponding to the first limiting member; A second limit piece is arranged in the first limit slot, and a second limit slot corresponding to the second limit piece is arranged on the first limit piece; when in use, the first connector is inserted into the second connector During the insertion process, the first limiting member is inserted into the first limiting slot on the second connector, and the second limiting member in the first limiting slot is inserted into the second limiting member in the first limiting member. In the position slot, by relatively rotating the first connecting head and the second connecting head, the first limiting piece is fixed in the first limiting slot, and the second limiting piece is fixed in the second limiting slot. The first connection head and the second connection head are simultaneously fixed by the two limiting pieces, which can effectively improve the stability of the connection of the first connection head and the second connection head. In addition, the second limiting member is located inside the first limiting groove, and the second limiting groove is located inside the first limiting member, so the structure can be simplified and the falling off can be effectively avoided. In addition, the connecting device is fixed by relatively rotating the first connecting head and the second connecting head, the operation is simple, the disassembly and connection can be carried out quickly and conveniently, and the use efficiency is higher.

Preferably, in order to improve the stability of the connection and simplify the structure, the first limiting member of the connecting device includes a first connecting member and one or more first limiting blocks arranged on the side surface of the first connecting member; The limit groove includes a first groove and one or more second grooves arranged on the side of the first groove. The first limit block corresponds to the second groove one-to-one. When the first connector is inserted into the second connection After the first connecting head and the second connecting head are relatively rotated by a certain angle, the first limit block on the first connecting piece is fixed in the second groove on the inner side of the first limit groove, so as to realize Preliminary fixation of the first connector and the second connector. When it is necessary to separate the first connector and the second connector, rotate the first connector and the second connector in the opposite direction relative to a certain angle to separate the first limit block from the second groove, and then the first connector can be separated. header and second connector.

Preferably, the second limiting member of the connecting device includes a second connecting member and one or more second limiting blocks arranged on the side surface of the second connecting member; the second limiting groove includes a third groove and a One or more fourth grooves in the three grooves, the second limit block is in one-to-one correspondence with the fourth groove, and when the second limit piece is fixed in the second limit groove, the second limit block is fixed in the in the fourth groove.

On the basis of the first limiting member, when the first connecting member is inserted into the first groove in the first limiting groove, the second connecting member is simultaneously inserted into the third groove in the second limiting groove, relative to the After rotating the first connector and the second connector by a certain angle, the first limit block is fixed in the second groove, and the second limit block is fixed in the fourth groove, so as to realize the first connector and the second connection The double fixation of the head prevents the first connection head and the second connection head from falling off during strength fitness.

In order to further prevent the first connection head and the second connection head from falling off due to accidental rotation during use, the side surface of the first connection piece of the connection device is provided with two first limiters located on the same plane. two first limit blocks are located on the same line; two second limit blocks located on the same plane are provided on the side of the second connecting piece, and the two second limit blocks are located on the same line; Two fourth grooves are arranged in the third groove, the two fourth grooves are in one-to-one correspondence with the two second limit blocks, and the straight line where the two fourth grooves are located and the line where the two first limit blocks are located perpendicular to each other. Therefore, in use, when the second limit block on the second connecting piece is inserted into the third groove, the line where the two first limit blocks are located and the line where the two second limit blocks are located are parallel to each other. Rotate the first connector and the second connector by 90 degrees, so that the line where the two first limit blocks are located and the line where the two second limit blocks are located are perpendicular to each other, and at this time the two second limit blocks are respectively fixed on In the two fourth grooves, the two first limiting blocks are respectively fixed in the two second grooves. Under such a setting, there will be no accidental relative rotation between the first connector and the second connector, and it is not easy for the first connector and the second connector to accidentally fall off during use, which can further improve the use efficiency. .

Based on this, further, a spring is arranged in the third groove of the connecting device, and the expansion and contraction direction of the spring is the same as the opening direction of the third groove. Preferably, when the second limit block is fixed in the fourth groove, the spring is in a compressed state, and the spring further fixes the second limit block in the fourth groove to avoid the second limit block from the fourth groove. slides out of the groove to avoid accidental separation. When it is necessary to separate the first connector from the second connector, press the first connector and the second connector relatively to move the first connector and the second connector toward each other. During the pressing process, the second connector The connecting piece and the second limiting block on it move toward the direction close to the interior of the third groove. At this time, the second connecting piece acts on the spring and further compresses the spring. When it moves to the second limiting block, it leaves the fourth After entering the groove, rotate the first connector and the second connector in the opposite direction, so that the second limit block leaves the fourth groove, the first limit block leaves the second groove, and the first connector and the second connector are separated. Connector.

Preferably, a connecting block is detachably connected to the open end of the third groove, the connecting block is provided with a through hole, the second limiting member enters the third groove through the through hole, and the connecting block is provided with a baffle plate, The baffle is located in the third groove, and the fourth groove is located on the baffle. The arrangement of the connecting block can effectively protect the spring structure in the third groove and prevent the spring from slipping out of the third groove. Easier to operate and use.

Further, the first connecting head of the connecting device is provided with a connecting groove, and the connecting groove is used for connecting the fitness accessories. A connecting hole is provided on the second connecting head, and the connecting hole is used for connecting the tension rope. The second connector is connected to the tension rope through the connection hole, and the first connector is connected to different fitness accessories through the connection slot.

Preferably, a protective shell is detachably connected to the second connector. The protective shell is used to protect the second connector, avoid collision and wear during fitness training, and improve the use efficiency.

The tension apparatus of the present disclosure also includes an end assembly of the tension exercise support arm, including a bracket, and also includes an elastic component and an adjustment seat connected to the bracket;

The elastic assembly includes a rigid piece connected in the bracket, the rigid piece protrudes outward from opposite sides of the bracket; and also includes two elastic pieces respectively located on both sides of the rigid piece protruding outward, the elastic pieces are Rotate and connect several rollers; in a natural state, the maximum distance between the rollers and the bracket is greater than the distance between the side wall on the same side of the rigid part and the bracket;

The adjusting seat is rotated to connect the terminal, and the adjusting seat is provided with a plurality of slots that are annularly distributed along the rotation direction of the terminal. the slot;

The adjusting seat is slidably fitted in the track, a plurality of pin holes are distributed on the track along the axial direction, and a positioning pin connected with the adjusting seat is further included, and the positioning pin can be inserted into the pin hole; The handle that describes the positioning pin in and out of the pin hole.

In view of the problems in the prior art that the adjustment structure of the force-applying end of the fitness equipment is prone to eccentric wear, the angle adjustment structure is complex, and the operability is poor, the present disclosure proposes an end assembly of a tension exercise support arm. The assembly and adjustment seat, the elastic assembly and the adjustment seat can be connected to the bracket by any existing means.

The elastic component includes a rigid part, and the rigid part can be made of any existing rigid material. The rigid parts protrude from opposite sides of the bracket to the outside of the bracket for matching with external rails and other components. Two shrapnels are respectively arranged on both sides of the rigid piece, and several rollers are rotatably matched with the shrapnel. In the natural state described in this application, it refers to the state in which no external force acts and no external force is applied to the bracket and the rigid member through the tension exercise arm. At this time, the maximum distance between the roller and the bracket is greater than the distance from the side wall on the same side of the rigid member. The distance of the bracket, ie the rollers now extend to a more outer direction of the bracket than the rigid member. When the elastic assembly of the present application is in use, when the user is not using or exerting force, the rollers located on the outer side of the bracket are always in contact with the rails and other devices outside the end of the support arm; when the user is using the fitness equipment, the effect is The force is transmitted to the bracket through the arm, and is transmitted to the rigid part by the bracket. If the force is not axial but deviated, the component force in the deviated direction will push the rigid part to one side, which will drive the shrapnel to deform. Generate a restoring force; if the external force is relatively small, the rigid part cannot be pushed to contact with the external track, and the wheel is still in contact with the external track at this time. Because the movable wheel has the ability to rotate, it can rotate in a small amount to overcome the external force Deviating from the overall deflection of the elastic component induced by the deviation, and at the same time rolling friction between the wheel and the external track, the frictional resistance is relatively small, thereby overcoming the eccentric wear phenomenon of the adjustment structure of the force-applying end of the fitness equipment in the prior art, and at the same time changing the sliding friction to rolling friction , can also effectively reduce the user's sense of obstruction; of course, if the external force is relatively large, the rigid member has been pushed to contact the external track, and the user who is exercising at this time can obviously feel the resistance suddenly increases, indicating that the user's The direction of force application has been seriously deviated, which in turn acts as a reminder to the user, which is helpful for prompting the user to use the standard posture to correctly exert force for exercise; and in this state, the shrapnel is severely deformed, and a large amount of the deviated force of the user is converted into elastic potential energy for storage. , which can significantly reduce the pressure between the rigid part and the external track, which can also significantly reduce the eccentric wear phenomenon. At the same time, due to the severe deformation of the shrapnel, a large elastic restoring force will be generated, which can also effectively offset the eccentric wear pressure; moreover, this state The lower rigid part bears a large amount of pressure, which can prevent the roller from being crushed and improve the overall service life of the application. Of course, in the present application, after the external force disappears, the shrapnel is reset immediately, so that the rigid part is released from the contact with the outer rail, and the rollers on both sides abut against the outer rail again.

In addition, in view of the problems of the complex structure and poor operability of the fitness support arm angle adjustment in the prior art, in the present disclosure, the end of the support arm is rotatably connected to the adjustment seat, and a plurality of annularly distributed slots are arranged on the adjustment seat. The annular distribution of the grooves matches the movement trajectory of the end head, thereby ensuring that the positioning block on the end head can be rotated to face any slot. The shape of the positioning block matches the shape of the slot, so that the positioning block can be inserted into and taken out from the slot. When in use, the positioning block enters a certain slot to locate the angle of the end, that is, the angle of the arm connected to the end is positioned; if you need to adjust the angle of the end, you only need to move the positioning block from the current slot. Take it out, turn the end to adjust the angle so that the positioning block is aligned with one of the remaining slots, and then insert the positioning block into the slot. In the present application, each slot can correspond to a gear position for angle adjustment, and the adjustment of the end head angle can be realized only by controlling the insertion and removal of the positioning block, which significantly simplifies the structure compared with the prior art. It greatly facilitates the use of the user and improves the operability.

In addition, in the prior art, in order to meet the use of users with different heights or exertion habits, the position of the support arm needs to be adjusted along the axial direction of the track. The existing method for adjusting the axial position of the support arm has a complex structure and poor operability. For this reason, in the present application, the adjusting seat is slidably fitted in the track, and the track and the adjusting seat are connected through pin holes and matching locating pins, each pin hole provides a positioning gear, and the adjusting seat moves to a pin at a suitable position The positioning pin directly or indirectly connected with the adjusting seat can be inserted into the pin hole. The entry and exit of the positioning pin can be controlled by the handle, which is convenient for the user to operate and use flexibly. The present application solves the problems of complex structure and poor operability of the axial position adjustment method of the support arm in the prior art, and achieves the purpose of simplifying the axial adjustment structure and providing users with a more convenient axial adjustment method.

Further, the elastic sheet includes two strips, the two strips are fixedly connected by two connecting pieces, and the two connecting pieces divide the area between the two strips into the first installation part, the second Two installation parts and a third installation part, the rollers are arranged on the first installation part and the third installation part, and the rigid part passes through the second installation part. This scheme is specially designed for the shrapnel, including two strips, and the two strips are connected by two connecting pieces, and the two strips and the two connecting pieces form an integral structure of fixed connection. The first installation part and the third installation part are respectively located on both sides of the elastic sheet, the first installation part is open on the side away from the second installation part, and the roller is installed in the first installation part. Similarly, the third installation part is far away from the second installation part. One side is open, and the roller is installed in the third installation part; the rigid part passes through the second installation part. In this scheme, the rollers are installed by the first mounting part and the third mounting part, so that the rollers are located at both ends, which is beneficial to compress the two ends of the elastic sheet inward under the action of external force, so that the elastic sheet starts to deform from both ends, ensuring that the elastic sheet has Good deformation and recovery ability; at the same time, the second mounting part provides installation and positioning space for the rigid part, so that the four directions of the rigid part are limited by two strips and two connecting parts respectively, so as to ensure the position of the rigid part is stable. The shrapnel of this solution can realize the effective connection between the rigid parts and the rollers, ensure strong structural integrity, and has strong adaptability to overcoming the eccentric wear phenomenon of the adjustment structure of the force-applying end of the fitness equipment.

Further, the roller is rotatably connected to the installation shaft, both ends of the installation shaft are provided with first notches, and the two strips are respectively inserted into the first notches at both ends of the installation shaft. In this scheme, for each roller, it is fixedly connected with the two strips through the installation shaft. The eccentric wear occurs in the direction of the connecting line of the root strip. This connection method also overcomes the problem of difficulty in installing the roller when the thickness of the strip is relatively thin, and ensures that the roller can stably roll between the two strips.

Further, a second notch facing the first mounting portion and the third mounting portion is provided on the strip, and the second notch is inserted into the first notch on the mounting shaft; two holes are sleeved on the mounting shaft. There are two bosses, and the roller is located between the two bosses. The second notch plays the role of positioning the installation shaft. The first notch and the second notch are matched and inserted into each other to prevent the installation shaft from sliding on the strip, and improve the stability of the spring sheet of the present application. The two bosses limit the position of the roller, so that the roller can only be sleeved on the installation shaft between the two bosses, so as to avoid the contact between the roller and the strips on both sides to interfere with its normal rolling.

Further, a limit mechanism is provided on the rigid piece, and the limit mechanism includes a first limit rod and a second limit rod penetrating the rigid piece, and the two bars on each elastic piece are located on the first limit rod. between a limit rod and a second limit rod. The limit mechanism is used to limit the sliding of the elastic piece on the rigid part. The relative position of the elastic piece and the rigid piece is stable through the limiting mechanism, so as to avoid the elastic piece sliding from the rigid piece to both sides and falling off. In this solution, the elastic pieces are limited by the first limit rod and the second limit rod penetrating the rigid member. Specifically, for each strip, it is clamped between the first limit rod and the second limit rod. between the limit rods to prevent them from sliding to both sides. In addition, the limiting mechanism in this solution can not only play a limiting role, but also effectively transmit the force; specifically, when the user exerts a force to deflect, the rigid member is pushed to one side by the bracket, and the movement of the rigid member The middle part of the corresponding strip will inevitably be deformed, and since the rollers on both sides of the elastic sheet are still in contact with the outer rail, the elastic sheet can be deformed to bend toward the middle position as a whole.

Further, the opposite sides of the adjustment seat are provided with a plurality of annularly distributed slots, the end head includes two positioning blocks, and the two positioning blocks correspond to the slots on both sides of the adjustment seat respectively; the end head is connected to the adjustment seat. The seat is rotatably connected through the third rotating shaft. The end head is matched with the slots on both sides of the adjustment seat through the positioning blocks on both sides, so as to improve the connection stability of the end head; when the angle needs to be adjusted, just remove the positioning blocks on both sides from the corresponding slots. Just take it out.

Further, two adjustment rods are arranged inside the end head, and the two positioning blocks are respectively located on the two adjustment rods; and each positioning block is located at one end of the corresponding adjustment rod, and the two adjustment rods are in a scissor structure. The adjusting rod is used to assemble the positioning block, and the user can make the positioning block enter and exit the slot by controlling the movement of the adjusting rod. Of course, in this solution, when the user needs to adjust the angle, he needs to control the two adjustment rods to perform the action at the same time. The scissor structure in this solution can be realized by using the existing technology, such as a structure such as scissors. The two adjusting rods are in a scissor structure, which is convenient for the two adjusting rods to act synchronously, so that the positioning blocks on both sides can be opened and closed synchronously.

Further, the two adjusting rods are mutually hinged around a first rotating shaft, and the first rotating shaft is located between the two ends of the adjusting rod; one end of the two adjusting rods away from the direction of the positioning block is rotatably connected with a first connecting piece; The first connecting pieces are mutually hinged around the second rotating shaft. The connection of the scissor structure is realized by the two adjusting rods being hingedly matched around the same first rotating shaft. One end of each adjusting rod away from the positioning block is rotatably connected to the first connecting piece, and the two adjusting rods are corresponding to the two first connecting pieces, and the two first connecting pieces are hinged around a second rotating shaft at the same time. When the user pulls a certain positioning block outwards to disengage it from the slot, the adjusting rod rotates around the first rotating shaft, driving the first connecting piece to rotate inwardly, driving the second rotating shaft to move, and the movement of the second rotating shaft drives the other One connecting piece also rotates inwardly, and then drives the other adjusting rod to rotate, so that the two adjusting rods are opened and the positioning blocks on both sides are far away from each other. Control of side mounting blocks.

Further, it also includes a second connecting piece located in the end head, the second rotating shaft is mounted on one end of the second connecting piece, and the other end of the second connecting piece extends in the direction away from the adjusting rod along the axial direction of the end head ; And one end of the second connecting piece away from the second rotating shaft is connected with a spring between the inner wall of the end head. The second connecting piece provides an installation station for the second rotating shaft, and it is convenient to connect the spring. The spring is located between the inner wall of the end head and the second connecting piece. When it is used to pull the adjusting rod outward, the second rotating shaft moves and stretches the spring. , after the user unloads the force, the two adjusting rods are automatically retracted and reset by using the restoring force of the spring, so that the two positioning blocks are automatically inwardly approached and inserted into the corresponding slots stably.

Further, the surface of the end head is provided with a second through groove matching the second connecting piece, the length direction of the second through groove is parallel to the axis of the end head, and the second connecting piece can move in the slot. The second through slot is used to provide a moving space for the second connecting piece, and the groove wall of the second through slot can limit the position of the second connecting piece.

Further, it also includes a C-shaped piece rotatably connected to the adjustment base, the handle is fixedly connected to the C-shaped piece, and the positioning pin is detachably connected to the C-shaped piece. When the user toggles the handle, the C-shaped piece is driven to rotate, and the C-shaped piece drives the positioning pin to move, thereby realizing the positioning pin entering and exiting the pin hole.

Further, the C-shaped piece and the adjusting seat are rotatably connected by a fourth rotating shaft; the handle and the C-shaped piece are connected by bolts; the handle is provided with a hook portion, and the hook portion is provided with a fourth shaft. a threaded hole; the C-shaped piece is provided with a positioning groove matching the hook portion, and a second threaded hole is set in the positioning groove; the first threaded hole and the second threaded hole are matched with each other, and when bent When the hook portion hooks the positioning groove, the first threaded hole is facing the second threaded hole. The fourth rotating shaft is arranged on the adjusting seat, and the C-shaped piece can be rotated around the fourth rotating shaft. The fixed connection between the handle and the C-shaped part is realized by bolts, which is convenient for installation, use, repair and replacement. When this solution is used, the positioning groove on the C-shaped piece is hooked by the hook on the handle, and the first threaded hole is facing the second threaded hole at this time, and the connection can be made by bolts. Through the arrangement of the hook portion and the positioning groove, the connection stability between the handle and the C-shaped piece can be improved, even if the bolt is loose, it can be hooked; at the same time, the positioning effect can be provided.

Further, the C-shaped piece is provided with a clip, and the end of the positioning pin is provided with a notch for clamping the clip; the positioning pin includes a pin, and one end of the pin is fixedly connected to the mounting piece, The other end is movably sleeved with a pin cylinder; the gap is located on the mounting part, and a spring is connected between the pin cylinder and the mounting part; the positioning pin also includes a sleeve for covering the pin shaft, and the top of the sleeve is fixed connecting flange, the mounting piece is fixed on the flange, the pin shaft passes through the flange and enters the mounting piece, the pin cylinder is movably inserted into the sleeve; the spring is sleeved outside the pin shaft, the The two ends of the spring are respectively fixedly connected with the pin cylinder and the mounting piece. The clip on the C-shaped piece is clamped by the notch at the end of the positioning pin to realize the detachable connection between the C-shaped piece and the positioning pin, which is very convenient for disassembly and replacement. When this solution is used, the pin cylinder is inserted into the pin hole. Since there is a spring between the pin cylinder and the mounting part, the spring can push the pin cylinder into the pin hole when not in operation to ensure stable connection; the return length of the spring is extremely long. value, when the positioning pin is taken out of the pin hole, it is only necessary to make the upward distance of the C-shaped part greater than the extreme value. The sleeve is fixedly connected with the flange, and the mounting piece is fixed on the flange to form the external structure of the positioning pin in this solution. One end of the pin cylinder is inserted into the sleeve and then sleeved outside the pin shaft. , to prevent the mounting parts from entering the corresponding pin holes.

The tensile apparatus of the present disclosure also includes

Rotate the track connected to the body;

an adjustment seat that is slidably fitted in the track;

Rotate the end head connected to the adjusting seat;

a support arm connected to the end;

The front of the body is provided with a screen; the interior of the body includes a motor, a differential, a transmission belt coupled between the motor and the differential, and a tensioning mechanism arranged between the motor and the differential, and the tensioning mechanism can be adjusted Apply pressure to the drive belt to adjust the tension of the drive belt;

Two sets of pull ropes coupled to the differential are coiled inside the body, and the two sets of pull ropes are respectively connected to the actuator through the arms on both sides.

In the tensile apparatus of the present disclosure, the rotational connection method of the track compared with the body, the sliding fit method of the adjustment base and the rail, the rotational connection method of the end head and the adjustment base, and the fixed connection method of the support arm and the end head, etc. There are technical implementations. The front of the body is a screen. The drawstring is coiled inside the body to transmit the tension on both sides. The free ends of the two sides of the coiled pull ropes extend outward, and after being applied with resistance by the resistance component, they pass through the arms on both sides of the body respectively, and are connected with the holding piece. During use, the user only needs to directly or indirectly hold the actuator with both hands, and the two sets of pull ropes are pulled out.

The present application can adjust the tensioning force of the transmission belt by adjusting the tensioning mechanism. The advantage of this is that due to the limited internal space of the fitness machine and the high requirement for the synchronization rate of the motor and the differential wheel during use, the transmission The tensioning force of the belt is required to be high. If there is no adjustable tensioning mechanism, it is difficult to directly install the belt with large tensioning force on the motor and the differential wheel. The tensioning mechanism keeps the tension of the drive belt at a low level, then installs the belt on the motor and the differential wheel, and finally adjusts the tensioning mechanism to make the tension of the drive belt at a high level to meet the needs of use . Adopting the above scheme can ensure the tension of the transmission belt when the motor is working, and at the same time, it can facilitate the installation of the transmission belt, and effectively improve the assembly efficiency of the tension device while ensuring the quality.

Further, the tensioning mechanism includes: a connecting plate; a tension wheel and an adjusting rod arranged on the connecting plate; a fulcrum rod passing through the connecting plate; a pressing structure arranged on the fulcrum rod; the pressing structure acts on the adjusting rod The drive connecting plate is pivoted with the fulcrum rod, so that the tension wheel presses the transmission belt to adjust the tension of the transmission belt. The transmission belt is in contact with the tension wheel, the tension wheel acts on the transmission belt, the transmission belt will exert a force on the tension wheel, and the tension wheel drives the connecting plate to rotate under the action of the force, and the connecting plate rotates in the process of driving the adjusting rod together. The fulcrum rod and the connecting plate can rotate relative to each other, so the fulcrum rod does not move. There is a pressure structure connected between the fulcrum rod and the adjustment rod. The pressure structure acts on the fulcrum rod and the adjustment rod. When the connecting plate moves , Since the fulcrum rod does not move, the adjustment rod moves with the connecting plate, so during the movement of the connecting plate, the pressure structure acts between the fulcrum rod and the adjustment rod, and the pressure structure exerts a restoring force on the adjustment rod, and the adjustment rod Drive the connecting plate to move to the original position together, and it is precisely because the pressure structure forces the connecting plate to return to the original position, the connecting plate drives the tension wheel to move at the same time, and then the tension wheel exerts a reverse force on the transmission belt, so that the transmission belt is in the Tensioned state, so that when in use, not only can buffer the force on the drive belt, at the same time, the drive belt is always in a state of tension, the output end connected with the drive belt can better act on the pull rope and improve the output of the pulling force effect, and the transmission belt does not affect the normal use of other internal parts.

Further, the pressurizing structure is a torsion spring, the torsion spring includes two ends and a rotating spring located between the two ends, one end of the torsion spring is connected to the adjusting rod, and the other end is connected to the fixed body in the fitness machine. Structurally, the rotating spring is sleeved on the outer wall of the fulcrum rod, and the torsion spring exerts pressure on the fixed structure and the adjusting rod.

Torsion springs are coil springs, the ends of the torsion spring are fixed to other components, and when the other components are rotated around the center of the spring, the spring pulls them back to their original position, creating a torque or rotational force. Torsion springs can store and release angular energy or statically fix a device by rotating a force arm around the central axis of the spring body. These springs are usually tight body, however, there is a pitch between the coils to reduce friction. They create resistance to rotation or rotational external forces. Depending on the application requirements, design the direction of rotation of the torsion spring (clockwise or counterclockwise) to determine the direction of rotation of the spring. The coils are either tightly wound or separated to accommodate the torsional load, and the end of the spring can be wound into a hook or straight torsion arm.

In this solution, one end of the torsion spring is connected to the adjusting rod, the other end is wound into a hook shape, and is connected to the fixed structure when in use, and the rotating spring between the two ends, that is, the coil, is sleeved on the fulcrum rod, so that when the tension is applied The wheel drives the connecting plate to rotate, and when the connecting plate drives the adjusting rod to rotate, the torsion spring acts on the adjusting rod through the fulcrum rod, so that the connecting plate rotates in the reverse direction and returns to the original position, and the connecting plate drives the tension wheel to return to the original position at the same time. The belt exerts a force that keeps the drive belt under tension.

Specifically, one end of the fulcrum rod in this solution is connected to the mounting plate through the connecting plate. And the connecting plate can be rotated on the fulcrum rod, and the fulcrum rod fixes the connecting plate on the mounting plate through threaded connection, which is easy to operate during installation, and one end of the transmission belt is connected to the motor, and the other end of the transmission belt is connected to the differential wheel. , the tension wheel is located between the motor and the differential wheel. The motor and the differential wheel are connected by a transmission belt, the motor adjusts the differential speed through the differential wheel, and the transmission belt is located on the side of the tension wheel close to the fulcrum rod.

When in use, this solution can better adjust the transmission belt between the differential wheel and the motor, so that it is in a tight state, which is more conducive to use. The tension wheel can rotate circumferentially on the connecting plate, so the transmission belt is in the When the tension pulley moves up, the rotation of the tension pulley itself and the rotation of the connecting plate can buffer the force on the transmission belt and prevent the transmission belt from being broken. And when installing, first install the device. After installation, when you need to install the drive belt, you can pull the tension pulley outward, and then install the drive belt on the side of the tension pulley. The tension pulley applies tension to the drive belt, so that you can Easy and quick installation.

Secondly, the distance between the tension wheel and the fulcrum rod in this solution is greater than the distance between the adjustment rod and the fulcrum rod. The force on the torsion spring is greater than the force when the transmission belt acts on the tension wheel, and it is precisely because of this that the torsion spring can better act on the adjustment rod, so that the tension wheel on the connecting plate returns to the original position and improves the use efficiency. .

In addition, the length of the torsion spring is short, and the length between the adjusting rod and the fulcrum rod is short, which is more suitable for the connection and use of the torsion spring.

Further, it also includes,

a first adjustment component for adjusting the rotation angle of the track on the body;

a second adjusting assembly for adjusting the axial position of the adjusting seat in the track;

The third adjusting component is used for adjusting the rotation angle of the end head on the adjusting seat.

This solution adjusts the rotation angle of the track on the body through the first adjustment component, so that the support arm located on the track can have different angular orientations, which is suitable for users with different arm spans and different opening and closing angles when exerting force; The position of the adjustment seat in the track is adjusted through the second adjustment component to meet the needs of users of different heights; the rotation angle of the end head on the adjustment seat is adjusted through the third adjustment component to further meet the needs of different heights and hair styles. The usage needs of users who are accustomed to power. Through the joint action of the three sets of adjustment components, the present application significantly improves the versatility of the tension device in use, and significantly expands the scope of application.

Further, the first adjustment assembly includes a fifth rotating shaft fixedly connected with the track, a toothed plate is fixedly sleeved on the fifth rotating shaft, and also includes a toothed member for matching with the toothed plate, so The toothed member is driven by a driving device to engage and disengage from the toothed disc. The track rotates synchronously with the rotation of the fifth rotating shaft to achieve the purpose of adjusting the track angle. When the track angle does not need to be adjusted, the toothed member is driven by the driving device to mesh with the toothed plate. At this time, due to the limit of the toothed member, the toothed plate cannot be rotated, so that neither the fifth rotating shaft nor the track can be rotated. ; When the track needs to be adjusted, the drive device drives the toothed piece to disengage from the toothed plate, and the track angle can be flexibly adjusted at this time. The driving device in this solution can be implemented by any power equipment in the prior art that can drive the action of the toothed member.

Further, the second adjustment assembly includes a number of pin holes axially arranged on the track, a positioning pin connected to the adjustment seat, and the positioning pin can be inserted into the pin hole; The handle that describes the positioning pin in and out of the pin hole. In this scheme, the rail and the adjusting seat are connected through pin holes and matching locating pins, each pin hole provides a positioning gear, and the adjusting seat moves to the pin hole in the proper position, so as to be directly or indirectly connected with the adjusting seat The positioning pin can be inserted into the pin hole. The entry and exit of the positioning pin can be controlled by the handle, which is convenient for the user to operate and use flexibly. The solution solves the problems of complex structure and poor operability of the axial position adjustment method of the support arm in the prior art, and achieves the purpose of simplifying the axial adjustment structure and providing users with a more convenient axial adjustment method.

Further, the third adjustment assembly includes a plurality of slots arranged on the adjustment seat and distributed annularly along the rotation direction of the end head, the end head is provided with a positioning block matching the slot, and the positioning block can be into and out of the slot. In this solution, the annular distribution of the slot matches the movement trajectory of the end of rotation, thereby ensuring that the positioning block on the end can be rotated to face any slot. The shape of the positioning block matches the shape of the slot, so that the positioning block can be inserted into and taken out from the slot. When in use, the positioning block enters a certain slot to locate the angle of the end, that is, the angle of the arm connected to the end is positioned; if you need to adjust the angle of the end, you only need to move the positioning block from the current slot. Take it out, turn the end to adjust the angle so that the positioning block is aligned with one of the remaining slots, and then insert the positioning block into the slot. In this solution, each slot can correspond to a gear for adjusting the angle of the end head, and the adjustment of the end head angle can be realized only by controlling the insertion and removal of the positioning block, which is significantly simplified compared with the prior art. The structure greatly facilitates the use of the user and improves the operability.

Further, it also includes an elastic member and a rigid member connected with the adjustment seat; when the external force borne by the adjustment seat is within the threshold value, the adjustment seat is coupled with the track through the roller on the elastic member; when the external force borne by the adjustment seat exceeds the threshold value , the adjusting seat is coupled with the track through a rigid part.

In view of the problems in the prior art that the eccentric wear phenomenon of the support arm adjustment structure during use is relatively serious, and it is easy to cause the user to feel more obstructed when applying force. After extensive research, the applicant found that the reason is that the pulling force exerted by the user during use cannot be completely along the axial direction of the support arm, and there must be deviation, which is transmitted to the adjustment structure at the end of the support arm, resulting in a blocking feeling. appear and eccentric wear occurs. In order to overcome this problem, the present application also provides an elastic member and a rigid member connected to the adjustment seat; when the external force borne by the adjustment seat is within the threshold value, the adjustment seat is coupled with the track through the roller on the elastic member; When the external force exceeds the threshold value, the adjusting seat is coupled with the rail through a rigid member. The elastic member and the rigid member can be directly or indirectly connected with the adjustment base, and the specific connection method is not limited herein. The elastic piece is provided with a roller, and the elastic piece provides prestress for the adjusting seat; the rigid piece can be made of any existing rigid material. The adjusting seat of this scheme is assembled in the track when in use, and when the external force on the adjusting seat is within the threshold value, the adjusting seat is coupled with the external track through the roller on the elastic member; when the external force on the adjusting seat exceeds the threshold value, the adjusting seat passes through The rigid member is coupled with the external rail; the threshold value refers to the critical point of force at which the elastic member is sufficiently deformed, and those skilled in the art can select and set it according to the material and shape of the specific elastic member, which will not be repeated here. . That is, when there is no external force and no external force is applied to the adjustment seat through the force-applying end of the fitness equipment, at this time, the roller extends to a more outer direction than the rigid member. When the user is not using or exerting force, the roller located on the outer side is always in contact with the aforementioned outer track; when the user is using the fitness equipment, the force is transmitted to the adjusting seat through the force-applying end, and is transferred from the adjusting seat to the rigid part, If the force is not axial but deviated, the component force in the deviated direction will push the rigid member to one side, which will drive the elastic member to deform and generate a restoring force; if the external force is relatively small and does not exceed the threshold, it cannot be Push the rigid part to contact with the external track, at this time, the contact with the external track is still realized by the wheel. Since the articulated wheel has the ability to rotate, it can perform a small rotation to overcome the overall deflection of the elastic component induced by the deviation of the external force, and at the same time The rolling friction between the wheel and the external track is relatively small, and the frictional resistance is relatively small, thereby overcoming the eccentric wear phenomenon of the adjustment structure of the force-applying end of the fitness equipment in the prior art, and at the same time changing the sliding friction into rolling friction, which can also effectively reduce the user's blocking feeling; of course, If the external force is relatively large, exceeds the deformation threshold of the elastic member, and has pushed the rigid member to contact the external track, the user who is exercising at this time can obviously feel the resistance suddenly increases, indicating the direction of the user's force application at this time. It has been seriously deviated, which in turn acts as a reminder to the user, which is beneficial to prompting the user to use the standard posture to correctly exert force for exercise; and in this state, the elastic member is seriously deformed, and the force of the user's deviation is converted into elastic potential energy for storage, which is significantly Reduce the pressure between the rigid part and the external track, which can also significantly reduce the eccentric wear phenomenon. At the same time, due to the severe deformation of the elastic part, a large elastic restoring force will be generated, which can also effectively offset the eccentric wear pressure; and, in this state, The rigid part bears a lot of pressure, which can prevent the roller from being crushed and improve the overall service life of the application. Of course, in this solution, after the external force disappears, the elastic member is reset immediately, so that the rigid member is out of contact with the outer rail, and the rollers on both sides are pressed against the outer rail again.

Further, the elastic member includes two strips, the two strips are fixedly connected by two connecting pieces, and the two connecting pieces divide the area between the two strips into the first installation portion, a second installation part and a third installation part, the rollers are arranged on the first installation part and the third installation part, and the rigid member passes through the second installation part;

The roller is rotatably connected to the installation shaft, both ends of the installation shaft are provided with first gaps, and two strips are respectively inserted into the first gaps at both ends of the installation shaft; The second notch of the first installation part and the third installation part, the second notch is inserted into the first notch on the installation shaft; the installation shaft is sleeved with two bosses, and the roller is located between the two bosses. between;

A limit mechanism is arranged on the rigid piece, and the limit mechanism is used to limit the sliding of the elastic piece on the rigid piece; the limit mechanism includes a first limit rod and a second limit rod penetrating the rigid piece, The two strips on each elastic piece are located between the first limit rod and the second limit rod.

In this scheme, the elastic parts are specially designed, including two strip parts, and the two strip parts are connected by two connecting parts, and the two strip parts and the two connecting parts form an integral structure of fixed connection. The first installation part and the third installation part are respectively located on both sides of the elastic member, the first installation part is open on one side away from the second installation part, and the roller is installed in the first installation part, and similarly the third installation part is far away from the second installation part. One side of the part is open, and the roller is installed in the third installation part; the rigid part passes through the second installation part. In this solution, the rollers are installed by the first mounting part and the third mounting part, so that the rollers are located at both ends, which is beneficial to compress the two ends of the elastic member inward under the action of external force, so that the elastic member starts to deform from both ends, ensuring that the elastic member is deformed from both ends. The elastic part has good deformation and recovery ability; at the same time, the second mounting part provides installation and positioning space for the rigid part, so that the four directions of the rigid part are respectively limited by two strips and two connecting parts, so as to ensure the rigidity of the rigid part. The position is stable. The elastic part of this scheme can realize the effective connection between the rigid part and each roller, ensure strong structural integrity, and has strong adaptability to overcoming the eccentric wear phenomenon of the adjusting structure of the force-applying end of the fitness equipment.

In this scheme, for each roller, it is fixedly connected with the two strips through the installation shaft. The eccentric wear occurs in the direction of the connecting line of the root strip. This connection method also overcomes the problem of difficulty in installing the roller when the thickness of the strip is relatively thin, and ensures that the roller can stably roll between the two strips.

Wherein, the second notch plays a role of positioning the installation shaft, the first notch and the second notch are matched and inserted into each other, so as to prevent the installation shaft from sliding on the strip member, and improve the use stability of the elastic member of the present application. The two bosses limit the position of the roller, so that the roller can only be sleeved on the installation shaft between the two bosses, so as to avoid the contact between the roller and the strips on both sides to interfere with its normal rolling.

The position-limiting mechanism ensures that the relative position of the elastic piece and the rigid piece is stable, and prevents the elastic piece from sliding from the rigid piece to both sides and falling off. The elastic member is limited by the first limit rod and the second limit rod penetrating the rigid member. Specifically, for each strip, it is clamped between the first limit rod and the second limit rod. between the rods to prevent them from sliding sideways. In addition, the limiting mechanism in this solution can not only play a limiting role, but also effectively transmit the force; specifically, when the user exerts a force to deflect, the rigid member is pushed to one side by the bracket, and the movement of the rigid member The middle part of the corresponding strip is inevitably deformed, and since the rollers on both sides of the elastic part are still in contact with the outer rail, the elastic part can be deformed to bend toward the middle position as a whole.

Further, it also includes a control board located in the body, a partition is arranged inside the body, and the resistance component and the control board are respectively located on both sides of the partition; a number of cooling fans are arranged on the partition; a number of cooling fans are arranged on the surface of the body hole.

Compared with the prior art, the present disclosure has the following advantages and beneficial effects:

1. The tension device of the present disclosure, through the joint action of the three sets of adjustment components, significantly improves the versatility of the tension device in use, and significantly expands the scope of application.

2. The pulling force apparatus of the present disclosure can overcome the eccentric wear phenomenon of the force-applying end adjustment structure of the fitness apparatus in the prior art, and at the same time change the sliding friction into rolling friction, and can also effectively reduce the blocking feeling of the user.

3. The pulling apparatus of the present disclosure can play a prompting role for the user, which is beneficial to prompting the user to use a standard posture to correctly exert force for exercising.

4. The pulling force apparatus of the present disclosure provides the pulling force fitness apparatus matched with the intelligent fitness system, which fills the gap in the prior art.

5. In the tensile device of the present disclosure, the differential mechanism is integrated on the motor casing and matched between the two output ends of the biaxial motor, so as to overcome the prior art that the differential is arranged separately from the motor and uses other The bulky defects caused by the traditional transmission method can be applied to various types of fitness equipment such as arm exercise or leg exercise that need to use differential motors to provide exercise resistance. It is of great significance for the miniaturization and family development of fitness equipment. .

6. In the pulling device of the present disclosure, the differential mechanism is driven by the direct meshing of the bevel gear, which can effectively solve the problem of low transmission efficiency in the prior art and reduce the energy loss during the transmission process.

7. In the pulling apparatus of the present disclosure, the angle of the support arm assembly is adjusted by the shifting mechanism compared to the adjustment component, so as to meet the needs of users with different needs to perform normal pulling exercise. When the angle of the support arm assembly is adjusted in place, the positioning mechanism The support arm assembly is positioned on the adjustment component to ensure normal use; the present application solves the problem that there is no support arm adjustment structure matched with the intelligent fitness system in the prior art, and realizes that the angle of the support arm in the intelligent fitness system can be flexibly adjusted , to meet the needs of different users for pulling exercise.

8. The pulling force apparatus of the present disclosure can effectively meet the user's requirement for pulling force exercise with both hands, and significantly improves the functionality of the mirror surface fitness apparatus.

9. The pulling apparatus of the present disclosure adjusts the angle of the support arm assembly compared to the adjustment component through the shifting mechanism, so as to satisfy users of different heights or different exertion habits to perform normal pulling exercise, and significantly improve the adjustability and performance of the present application. Universality.

10. In the tensile apparatus of the present disclosure, the slide rail is installed vertically, and the adjustment component slides and fits on it, which can effectively adjust the overall height of the support arm assembly, thereby better meeting the needs of users of different heights.

11. The tensile apparatus of the present disclosure provides a new solution for arm adjustment in the field of tensile fitness equipment through the joint action of components such as a static ring, a floating ring, and an elastic member.

12. The connecting head of the fitness accessories of the tensile apparatus of the present disclosure, the first connecting head and the second connecting head are double-fixed by the first limiting member and the second limiting member, and the first limiting member is located at the first limit when connecting. In the position slot, the second limit piece is located in the first limit slot, the second limit slot is located in the first limit piece, and the interconnection of the second limit piece and the first limit piece can effectively improve the stability of the connection The first connector and the second connector do not fall off during use; at the same time, it can be quickly disassembled and connected, which is more convenient to use, and the connecting device simplifies the structure and is more convenient for long-term use; secondly, The first connection head can be connected to other fitness equipment according to the user's needs, and the second connection head is used to connect the tension rope, which is suitable for the use of different strength equipment and has a wider range of use.

13. The fitness equipment support arm structure of the tension equipment of the present disclosure and its end assembly, when the user is not using or exerting force, the roller located on the outer side of the bracket is always in contact with the external rail; when the user is using the fitness equipment When the instrument is used, the force is transmitted to the bracket, and the bracket is transmitted to the rigid part. If the force is not axial but deviated, the component force in the deviated direction will push the rigid part to one side, which will drive the deformation of the shrapnel in the process. , which produces a restoring force. After the external force disappears, the shrapnel is reset immediately, so that the rigid part is released from the contact with the outer rail, and the rollers on both sides are pressed against the outer rail again.

14. If the external force is relatively small, the rigid member cannot be pushed into contact with the external rail, and the wheels are still in contact with the external rail. The articulated wheel has the ability to rotate, and can be rotated in a small range to overcome the overall deflection of the elastic component induced by the deviation of external force. At the same time, the rolling friction between the wheel and the external track is relatively small, and the frictional resistance is relatively small, thereby overcoming the fitness equipment in the prior art. The eccentric wear of the force-applying end adjusts the structure, and at the same time changes the sliding friction into rolling friction, which can also effectively reduce the blocking feeling of the user.

15. If the external force is relatively large, the fitness equipment support arm structure and its end assembly of the tension equipment of the present disclosure have pushed the rigid member to contact with the external rail, and the user who is exercising at this time can obviously feel the resistance suddenly. If it increases, it means that the user’s force application direction has been seriously deviated at this time, which in turn acts as a reminder to the user, which is beneficial to prompt the user to use the standard posture to correctly exert force for exercise; and in this state, the shrapnel is seriously deformed, causing the user to deviate from the force. A large amount of the force is converted into elastic potential energy for storage, which can significantly reduce the pressure between the rigid part and the external rail, which can also significantly reduce the eccentric wear phenomenon. The eccentric wear pressure is offset; and in this state, the rigid part bears a lot of pressure, which can prevent the roller from being crushed and improve the overall service life of the application.

16. The end assembly of the tension exercise support arm of the tension apparatus of the present disclosure can adjust the angle of the end only by controlling the insertion and removal of the positioning block, which significantly simplifies the structure compared with the prior art. , which is very convenient for users to use; and can control the installation blocks on both sides by only operating the adjustment lever on either side, which significantly improves the operability.

17. The end assembly of the tension exercise support arm of the tension apparatus of the present disclosure solves the problems of complex structure and poor operability of the axial position adjustment method of the support arm in the prior art, and realizes a simplified axial adjustment structure, which is convenient for users. The purpose of providing a more convenient way of axial adjustment.

18. With the tension apparatus of the present disclosure, the user only needs to hold the two grips with both hands to pull the pull rope outwards, and the two sets of pull ropes are pulled out, and the resistance component provided by the resistance component is convenient for the user to perform the pulling exercise. , so as to achieve the purpose of providing a powerful pulling exercise function for the mirror fitness equipment; through the joint action of the three sets of adjustment components, it can meet the needs of users with different heights and different exertion habits, and significantly improve the versatility and adjustability. And the scope of application is expanded; it can overcome the eccentric wear phenomenon of the adjustment structure of the force-applying end of the fitness equipment in the prior art, and at the same time change the sliding friction into rolling friction, and can effectively reduce the user's blocking feeling; The drive belt is kept in a state of tension, which can better transmit the force of the motor during use, and can also buffer and protect the drive belt during use.

19. The system and method for obtaining the position of the support arm of the tensile apparatus of the present disclosure can accurately obtain the position of the support arm, and provide a sufficient basis for the upper computer to judge whether the fitness action is suitable and safe, thereby filling the gap in the prior art.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the embodiments of the present disclosure, and constitute a part of the present application, and do not constitute limitations to the embodiments of the present disclosure. In the attached image:

1 is a front view of a specific embodiment of the disclosure;

FIG. 2 is a schematic diagram of a first adjustment assembly in a specific embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a partial structure in a track in a specific embodiment of the present disclosure;

FIG. 4 is a front view of the inside of the track in the specific embodiment of the disclosure

FIG. 5 is a schematic diagram of a partial structure of a second adjustment assembly in a specific embodiment of the present disclosure;

6 is a schematic structural diagram of a handle in a specific embodiment of the present disclosure;

7 is a schematic structural diagram of a C-shaped part in a specific embodiment of the present disclosure;

8 is a schematic structural diagram of a positioning pin in a specific embodiment of the present disclosure;

FIG. 9 is a schematic partial structure diagram of a positioning pin in a specific embodiment of the present disclosure;

10 is a schematic diagram of the partial structure of the third adjustment group price in a specific embodiment of the present disclosure;

FIG. 11 is a partial structural schematic diagram of the adjusting seat and the end head in the specific embodiment of the disclosure;

FIG. 12 is a schematic partial structure diagram of the adjusting seat and the end head in the specific embodiment of the disclosure;

13 is a schematic structural diagram of an adjustment rod in a specific embodiment of the disclosure;

14 is a schematic structural diagram of a first connector in a specific embodiment of the disclosure;

15 is a schematic structural diagram of a second connector in a specific embodiment of the disclosure;

16 is a schematic diagram of the connection structure of the adjustment seat in the specific embodiment of the disclosure;

FIG. 17 is a schematic diagram of the connection structure of the adjusting seat in the specific embodiment of the disclosure;

FIG. 18 is a schematic diagram of the inside of the track of a specific embodiment of the present disclosure;

FIG. 19 is a schematic diagram of the connection between an elastic member and a rigid member in a specific embodiment of the disclosure;

FIG. 20 is a schematic diagram of the connection between an elastic member and a rigid member in a specific embodiment of the present disclosure;

FIG. 21 is a top view of the connection structure of the elastic member and the rigid member in the specific embodiment of the disclosure; FIG. 22 is the structural schematic diagram of the bracket in the specific embodiment of the disclosure;

23 is a schematic structural diagram of an elastic member in a specific embodiment of the disclosure;

24 is a schematic structural diagram of an installation shaft in a specific embodiment of the disclosure;

25 is a schematic structural diagram of a rigid member in a specific embodiment of the disclosure;

26 is a schematic diagram of a specific embodiment of the disclosure;

27 is a schematic structural diagram of a support arm assembly in a specific embodiment of the disclosure;

FIG. 28 is a schematic diagram of a partial structure of an adjustment assembly in a specific embodiment of the present disclosure;

29 is a schematic structural diagram of a static ring in a specific embodiment of the disclosure;

30 is a schematic structural diagram of a floating ring in a specific embodiment of the disclosure;

FIG. 31 is a schematic structural diagram of a limiting member in a specific embodiment of the present disclosure;

32 is a schematic structural diagram of a positioning ring in a specific embodiment of the present disclosure;

33 is a schematic structural diagram of a support arm assembly in a specific embodiment of the disclosure;

34 is a schematic structural diagram of a shifting mechanism in a specific embodiment of the disclosure;

35 is a schematic structural diagram of a shift mechanism in a specific embodiment of the disclosure;

36 is a schematic structural diagram of a shell plate in a specific embodiment of the disclosure;

FIG. 37 is a schematic diagram of the cooperation between the slide rail and the adjustment assembly in the specific embodiment of the disclosure;

Figure 38 is a cross-sectional view of a sleeve in a specific embodiment of the disclosure;

39 is a front view of a motor in a specific embodiment of the disclosure;

40 is a schematic structural diagram of a motor in a specific embodiment of the present disclosure;

41 is a schematic structural diagram of a motor in a specific embodiment of the disclosure;

FIG. 42 is a schematic partial structure diagram of a motor in a specific embodiment of the present disclosure;

FIG. 43 is a schematic partial structure diagram of a motor in a specific embodiment of the present disclosure;

Figure 44 is a side view of a resistance assembly in a specific embodiment of the disclosure;

45 is a schematic structural diagram of a resistance assembly in a specific embodiment of the disclosure;

46 is a schematic structural diagram of a resistance assembly in a specific embodiment of the disclosure;

FIG. 47 is a partial schematic diagram of a resistance assembly according to a specific embodiment of the present disclosure;

48 is a schematic structural diagram of a dual-shaft motor in a specific embodiment of the disclosure;

FIG. 49 is a schematic diagram of system connection according to a specific embodiment of the present disclosure;

FIG. 50 is a schematic diagram of the rotation process of the support arm around the intersection of the support arm and the track in a specific embodiment of the disclosure;

Figure 51 is a schematic diagram of the structure of the connection device;

Figure 52 is a schematic diagram of the structure of the first connector;

Figure 53 is a schematic diagram of the structure of the second connector;

Figure 54 is a cross-sectional view of the vertical plane A after the first connector and the second connector are connected;

Figure 55 is a cross-sectional view of the vertical plane B after the first connector and the second connector are connected;

Figure 56 is a schematic diagram of a connection block structure;

Figure 57 is a top view of a specific embodiment of the disclosure;

58 is a schematic structural diagram of a specific embodiment of the disclosure;

FIG. 59 is a schematic structural diagram of the interior of a specific embodiment of the present disclosure;

Figure 60 is a front view of the interior of a specific embodiment of the disclosure;

FIG. 61 is a schematic structural diagram of a tensioning mechanism in a specific embodiment of the disclosure.

The marks in the attached drawings and the corresponding parts names:

1-bracket, 2-rigid piece, 201-first through slot, 3-elastic piece, 301-stripe piece, 302-third connecting piece, 303-first installation part, 304-second installation part, 305- The third installation part, 306-second notch, 4-roller, 401-ring groove, 5-installation shaft, 501-first notch, 502-boss, 6-first limit rod, 7-second limit Rod, 8-track, 801-protrusion, 9-end, 10-adjustment seat, 11-slot, 12-positioning block, 13-third shaft, 14-cover, 15-adjustment rod, 16-th A rotating shaft, 17-first connecting piece, 18-second rotating shaft, 19-second connecting piece, 20-first spring, 21-second through groove, 22-fourth rotating shaft, 23-pin hole, 24-positioning pin, 241-notch, 242-pin, 243-mount, 244-pin barrel, 245-second spring, 246-sleeve, 247-flange, 25-handle, 251-hook, 252-section A threaded hole, 26-C-shaped piece, 261-positioning groove, 262-second threaded hole, 263-clips, 27-body, 28-arm, 29-sprocket, 30-tooth, 31-th Five hinges, 32-screen, 33-back plate, 34-holding piece, 36-motor, 37-differential, 38-tension wheel, 39-control board, 40-spacer, 141-cooling fan, 142- Cooling hole, 143-connection plate, 144-tension wheel, 145-fulcrum rod, 146-adjustment rod, 147-torsion spring, 148-installation plate, 149-fixed structure, 41-dual shaft motor, 42-motor housing, 43 - Winder, 44-First rotating part, 45-Second rotating part, 46-Mounting part, 47-First rotating shaft, 48-Winding reel, 49-Mounting seat, 410-Support part, 411-Mounting hole ;412-arm assembly, 4121-first body, 4122-second body, 4123-third body, 413-static ring, 414-floating ring, 415-limiting piece, 416-first elastic Pieces, 417-positioning ring, 418-first meshing tooth, 419-second meshing tooth, 420-thread opening, 421-first adjusting rod, 422-topping part, 423-cam, 424-third rotating piece , 425-Y-shaped piece, 426-Fourth rotating piece, 427-Second shaft, 428-Shell plate, 429-Through hole, 430-Give way slot, 431-Give way hole, 432-Chute, 433-Slide Block, 434-groove, 435-protrusion, 436-notch, 437-tension wheel, 438-mirror, 439-slide rail, 440-pin hole, 441-second adjustment lever, 442-pin, 443-slide bottom plate , 444-positioning hole, 445-sleeve, 446-second elastic piece, 51-first connecting head, 52-first connecting piece, 521-first limiting block, 53-connecting block, 531-through hole, 532 - Baffle, 533 - Fourth groove, 54 - Third groove, 541 -Spring, 55-Second connector, 56-First groove, 561-Second groove, 57-Second connector, 571-Second limit block, 58-Connecting hole, 59-Protective shell, 591 -Fixing holes.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with reference to the embodiments and the accompanying drawings. as a limitation of the present disclosure.

Example 1:

As shown in Figures 1 and 2, and Figures 16-18, a tensile device includes a body 27, a track 8 rotatably connected to the body 27, an adjusting seat 10 slidably fitted in the track 8, and a rotatable connection. The end head 9 on the adjustment base 10, the support arm 28 fixedly connected with the end head 9; also includes,

a first adjustment component for adjusting the rotation angle of the rail 8 on the body 27;

a second adjusting assembly for adjusting the axial position of the adjusting seat 10 in the track 8;

a third adjusting component for adjusting the rotation angle of the end head 9 on the adjusting seat 10;

Also includes:

The elastic member 3 and the rigid member 2 connected with the adjustment seat 10; when the external force borne by the adjustment seat 10 is within the threshold value, the adjustment seat 10 is coupled with the track 8 through the roller 4 on the elastic member 3; When the external force exceeds the threshold value, the adjusting seat is coupled with the rail 8 through the rigid member 2 .

Example 2:

On the basis of Embodiment 1, a tensile apparatus as shown in FIG. 26 , such as an intelligent mirror surface fitness device, further includes a mirror surface 438 located on the surface of the body 27 (not shown in FIG. 26 ), and the body 27 is provided with a mirror surface 438 Two winders for retracting and releasing two groups of pull ropes, a motor for providing motion resistance for the pull ropes, and a differential mechanism for synchronizing the two groups of pull ropes; A slide rail 439 is provided, and the support arm assembly 412 is matched on the slide rail 439 through an adjustment assembly, and the adjustment assembly includes a shift mechanism and a first positioning mechanism, and the shift mechanism is used to adjust the support arm assembly 412 compared with The angle of the slide rail 439, the first positioning mechanism is used to position the support arm assembly 412 on the adjustment assembly.

In this embodiment, two winders are arranged inside the body, which are used for retracting two sets of pulling ropes, which are respectively used for the pulling exercise of the user's two arms, and a motor is arranged therein. The motor in this application is used as a passive moving part, used for pulling The rope provides resistance to the movement for the effect of a pulling exercise. Considering that users generally exercise both arms at the same time when exercising, a differential mechanism is also set in the body, so that the two sets of pull ropes can be retracted and released synchronously. The mutual restriction of the side tension ensures the stable passive operation of the motor. In this embodiment, slide rails are provided on the opposite side walls of the body, and the arm assembly is matched with the slide rail through the adjustment component. The arm assembly is an important component of the tension exercise and is used to pass the pull rope. The pull rope needs to be Passing through the support arm assembly, and then directly or indirectly connected with other components for the user to hold and exert force, the support arm assembly not only provides protection for the pull rope, but also plays an important guiding role for the pull rope.

The support arm assembly is connected to the adjustment assembly, and the adjustment assembly includes a shift mechanism and a first positioning mechanism. The angle of the support arm assembly compared with the adjustment assembly is adjusted through the shift mechanism to satisfy users of different heights or different exertion habits. Carry out the normal pulling exercise. After the angle of the support arm assembly is adjusted in place, the support arm assembly is positioned on the adjustment component through the first positioning mechanism to ensure normal use.

Example 3:

A tensile apparatus, such as an intelligent mirror fitness apparatus, on the basis of Embodiment 2, as shown in FIGS. 27 to 35 , the adjustment assembly includes two static rings 413 facing each other, which are slidably sleeved along the axial direction. The floating ring 414 outside each static ring 413 is fixedly connected to the limiting member 415 outside the static ring 413 , and a first elastic member 416 is disposed between the limiting member 415 and the corresponding floating ring 414 , and the first elastic member 416 exerts a force for the two floating rings 414 to move closer to each other; one end and two sides of the arm assembly 412 are respectively engaged with the two floating rings 414 ; the shifting mechanism is used to keep the two floating rings 414 away from each other.

It should be noted that, in FIG. 28, for convenience of presentation, the limiting member on one side is hidden.

In one or more preferred embodiments, the first elastic member 416 is a compression spring, which always provides a pushing force for the floating ring to move toward another floating ring.

In one or more preferred embodiments, the inner end face of the stationary ring 413 is closed along the axial direction.

Example 4:

A kind of tension equipment, such as intelligent mirror fitness equipment, on the basis of embodiment 3,

The first positioning mechanism includes a positioning ring 417 located at one end of the support arm assembly 412, and a plurality of annularly distributed first meshing teeth 418 located at the end face of the floating ring 414; Between the floating rings 414 , a plurality of second meshing teeth 419 are provided on both end surfaces of the positioning ring 417 , and the second meshing teeth 419 and the first meshing teeth 418 can mesh with each other.

As shown in FIG. 33, the arm assembly 412 includes a first tube body 4121, a second tube body 4122, and a third tube body 4133, which are connected in sequence. The positioning ring 417 is located on the third tube body 4133, and the interior of the positioning ring 417 is connected to the third tube body 4133. The third pipe body 4133 is connected; the positioning ring 417 is provided with a wire opening 420 .

As shown in FIG. 34 and FIG. 35 , the shifting mechanism includes a first adjustment rod 421 located outside the adjustment assembly, a push portion 422 fixed on the floating ring 414 , and a push portion 422 in contact with the push portion 422 and located axially inward of the floating ring 414 The directional cam 423 is used to link the first adjusting rod 421 and the transmission mechanism of the two cams 423; the transmission mechanism is driven by the first adjusting rod 421 to move, and drives the two cams 423 to rotate. The transmission mechanism includes a third rotating member 424 relatively fixed to the first adjusting rod 421 , a Y-shaped member 425 sleeved on the end of the third rotating member 424 , and a fourth rotating member 426 rotatably connected to the two bifurcated ends of the Y-shaped member 425 , a second rotating shaft 427 fixedly connected with the fourth rotating member 426 ; the two cams 423 are respectively fixed on the two second rotating shafts 427 .

It also includes two shell plates 428. The shell plates 428 are provided with through holes 429 that match the floating rings 414. The two shell plates 428 are respectively sleeved outside the two floating rings 414. The two shell plates 428 are fixedly connected, and the shell plates 428 are also provided with an escape slot 430 and/or an escape hole 431 matching the transmission mechanism.

In one or more preferred embodiments, each floating ring 414 is provided with two axially opposite pushing parts 422, and each pushing part 422 has a matching cam 423. When the transmission mechanism is first adjusted When the rod 421 is driven to move, it drives all the cams 423 to rotate together.

In one or more preferred embodiments, a threaded connection can be adopted between the first pipe body and the second pipe body, and between the second pipe body and the third pipe body, so as to flexibly adjust the whole arm assembly length.

When the shifting mechanism of this embodiment is in use, the manpower rotates upward to lift the adjusting rod, and the upward rotation of the adjusting rod drives the third rotating member to rotate downward. As shown in Figure 34, the end of the Y-shaped member is reserved for the third rotating member. Therefore, the third rotating member descends in it and drives the Y-shaped member to slide horizontally, which can drive the fourth rotating member on both sides to rotate, and then drive the cams on both sides to rotate, respectively. Push in the direction away from each other, and then the floating ring 414 and the positioning ring 417 can be disengaged. At this time, the arm assembly can be manually rotated to shift to a suitable angle, and then the adjusting rod can be released. The floating rings on the sides move closer to each other and engage with their corresponding positioning rings again to complete the positioning.

In one or more preferred embodiments, the Y-shaped piece can be slidably fitted inside the adjustment assembly to further improve the stability of the shifting process.

In one or more preferred embodiments, the end of the Y-shaped member is provided with a first waist-shaped hole that cooperates with the third rotating member, and the two bifurcated ends of the Y-shaped member are provided with a second waist that cooperates with the fourth rotating member. type hole.

In one or more preferred embodiments, for the Y-shaped piece, each forked end of the Y-shaped piece drives the two fourth rotating pieces to rotate at the same time, thereby driving the two pushing parts on the opposite sides of the corresponding floating ring. The cam rotates. This solution can be implemented using any existing linkage structure. The connecting rod transmission method used in Figure 34.

In one or more preferred embodiments, the pulling rope first goes around several tensioning wheels, and then enters the inside of the third tubular body.

In one or more preferred embodiments, several tension wheels 437 are also connected between the two static rings 413 . The outer wall of the static ring 413 is annularly distributed with a plurality of sliding grooves 432, and the inner wall of the floating ring 414 is annularly distributed with a plurality of sliding blocks 433. The floating ring 414 and the static ring 413 are slidably matched with the sliding grooves 432 through the matching sliders 433; the outer end surface of the static ring 413 A number of notches 436 are evenly distributed in the ring, the surface of the limiting member 415 is provided with a groove 434 that matches the outer end surface of the static ring 413, and the groove bottom of the groove 434 is provided with a number of protrusions 435 that match the notches 436; the outer end surface of the static ring 413 is inserted into the notches 436 , the protrusions 435 enter the corresponding gaps 436 .

Example 5:

A kind of tension equipment, such as an intelligent mirror fitness equipment, on the basis of any of the above-mentioned embodiments, as shown in Figure 34 to Figure 38, the adjustment assembly is slidingly matched with the slide rail 439; the adjustment assembly also includes a second positioning mechanism, so The second positioning mechanism is used to position the adjustment assembly on the slide rail 439 . The second positioning mechanism includes a number of pin holes 440 evenly distributed on the slide rail 439 along the axis, a second adjustment rod 441 on the adjustment assembly, and a latch 442 connected with the second adjustment rod 441. The second adjustment rod 441 is used to remove the pin 442 from the pin hole 440 . The adjustment assembly is slidably matched with the sliding rail 439 through the sliding bottom plate 443, and the sliding bottom plate 443 is provided with a positioning hole 444; it also includes a sleeve 445 threaded in the positioning hole 444, and the plug pin 442 is movable through the sleeve A second elastic member 446 is installed between the outer wall of the plug 442 and the inner wall of the sleeve 445 , the second elastic member 446 is used for pressing the plug 442 in the pin hole 440 .

In one or more preferred embodiments, the second elastic member 446 is a compression spring.

In one or more preferred embodiments, the two shell plates 428 and the sliding bottom plate 443 are integral structures as shown in FIG. 36 .

Example 6:

On the basis of any of the foregoing embodiments, this embodiment describes the motor and the differential mechanism inside the body 27:

As shown in Figures 39 to 43, the body 27 includes a biaxial motor 41 and a differential mechanism matching the biaxial motor 41. The two windings 43 are respectively connected to the two output ends of the biaxial motor 41. The differential mechanism It is installed on the motor casing 42 , and the differential mechanism is matched with the two output ends of the biaxial motor 41 at the same time.

The differential mechanism includes a first rotating member 44 fixedly connected to the two output ends of the biaxial motor 41, and a second rotating member 45 located between the two first rotating members 44; the bevel gear on the second rotating member 45 is simultaneously It meshes with the bevel gears on the two first rotating parts 44; there are two second rotating parts 45, and the two second rotating parts 45 are located on opposite sides of the motor housing 2; the motor housing 42 is fixedly connected to the mounting part 46, the first The two rotating members 45 are rotatably connected to the mounting member 46 through the first rotating shaft 47 ; the first rotating shaft 47 is fixedly connected to the bobbin 48 .

The spool 43 is rotatably fitted on the output end of the biaxial motor 41; it also includes a mounting seat 49 and two supports 410 fixed on the mounting seat 49. The biaxial motor 41 is located between the two supporting members 410, and the dual The two output ends of the shaft motor 41 are respectively rotatably connected to the two support members 410 ; the mounting seat 49 is provided with a plurality of mounting holes 411 .

FIG. 42 is a partial schematic view of the present embodiment with the motor casing 42 and the mounting member 46 hidden.

Preferably, the dual-axis motor 41 in this embodiment is a disk-type brushless motor or a flat motor.

Example 7:

On the basis of Embodiment 1, a tension apparatus further includes two reels 43 for retracting two sets of pull ropes, a resistance component for providing movement resistance for the pull ropes, and for allowing the pull ropes to pass through The support arm assembly 412, an adjustment component for adjusting the angle of the support arm assembly 412.

In this embodiment, the resistance component includes a biaxial motor 41 and a differential mechanism matched with the biaxial motor 41 , the two windings 43 are respectively connected to the two output ends of the biaxial motor 41 , and the differential mechanism is installed on the motor housing 42 and the differential mechanism cooperates with the two output ends of the biaxial motor 41 at the same time.

In this embodiment, one end of the support arm assembly 412 is connected to the adjustment assembly. The adjustment assembly includes a shift mechanism and a positioning mechanism. The shift mechanism is used to adjust the angle of the support arm assembly 412 relative to the adjustment assembly, and the positioning mechanism is used to The arm assembly 412 is positioned on the adjustment assembly.

When this embodiment is used, the pull rope is released from the winder, passes through the resistance component, passes through the adjustment component, enters the support arm assembly, and finally passes through the support arm assembly, and is directly or You can connect indirectly. Each set of ropes corresponds to one arm assembly.

Example 8:

A tensioning device, on the basis of Embodiment 7, the resistance assembly is shown in Figures 44 to 48, including a biaxial motor 41, a differential mechanism matched with the biaxial motor 41, and the two windings 43 are respectively connected At the two output ends of the biaxial motor 41 , the differential mechanism is installed on the motor casing 42 , and the differential mechanism is matched with the two output ends of the biaxial motor 41 at the same time.

The differential mechanism includes a first rotating member 44 fixedly connected to the two output ends of the biaxial motor 41, and a second rotating member 45 located between the two first rotating members 44; the bevel gear on the second rotating member 45 is simultaneously It meshes with the bevel gears on the two first rotating parts 44; there are two second rotating parts 45, and the two second rotating parts 45 are located on opposite sides of the motor housing 42; the motor housing 42 is fixedly connected to the mounting part 46, and the first The two rotating members 45 are rotatably connected to the mounting member 46 through the first rotating shaft 37 ; the first rotating shaft 47 is fixedly connected to the bobbin 48 .

The spool 43 is rotatably fitted on the output end of the biaxial motor 41; it also includes a mounting seat 39 and two supports 310 fixed on the mounting seat 39, the biaxial motor 41 is located between the two supporting members 310, and the dual The two output ends of the shaft motor 31 are respectively rotatably connected to the two support members 310 ; the mounting seat 39 is provided with a plurality of mounting holes 311 .

FIG. 47 is a partial schematic view of the present embodiment with the motor casing 42 and the mounting member 46 hidden.

Preferably, the dual-axis motor 41 in this embodiment is a disk-type brushless motor or a flat motor.

Example 9:

A tensile device, as shown in Figure 27 to Figure 36, on the basis of Embodiment 7 or 8, one end of the support arm assembly 412 is connected to the adjustment assembly, and the adjustment assembly includes a shifting mechanism, a positioning mechanism, and a shifting mechanism for In order to adjust the angle of the support arm assembly 412 relative to the adjustment assembly, the positioning mechanism is used to position the support arm assembly 412 on the adjustment assembly.

In this embodiment, as shown in FIG. 28 , the adjustment assembly includes two static rings 413 facing each other, a floating ring 414 slidably sleeved outside each static ring 413 in the axial direction, and a stopper 415 is fixedly connected to the outside of the static ring 413 . And a first elastic member 416 is arranged between the limiting member 415 and the corresponding floating ring 414, and the first elastic member 416 exerts a force to move towards each other for the two floating rings 414; The floating rings 414 are engaged; the shifting mechanism is used to move the two floating rings 414 away from each other. It should be noted that, in FIG. 28, for convenience of presentation, the limiting member on one side is hidden.

In one or more preferred embodiments, the first elastic member 416 is a compression spring, which always provides a pushing force for the floating ring to move toward another floating ring.

In one or more preferred embodiments, the inner end face of the stationary ring 413 is closed along the axial direction.

Example 10:

A kind of tension apparatus, on the basis of embodiment 9,

The positioning mechanism includes a positioning ring 417 located at one end of the support arm assembly 412, and a plurality of annularly distributed first meshing teeth 418 located at the end face of the floating ring 414; Between the rings 414 , a plurality of second meshing teeth 419 are provided on both end surfaces of the positioning ring 417 , and the second meshing teeth 419 and the first meshing teeth 418 can mesh with each other.

As shown in FIG. 33, the arm assembly 412 includes a first tube body 4121, a second tube body 4122, and a third tube body 4133, which are connected in sequence. The positioning ring 417 is located on the third tube body 4133, and the interior of the positioning ring 417 is connected to the third tube body 4133. The third pipe body 4133 is connected; the positioning ring 417 is provided with a wire opening 420 .

As shown in FIGS. 34 and 35 , the shifting mechanism includes an adjustment rod 421 located outside the adjustment assembly, a push portion 422 fixed on the floating ring 414 , and a push portion 422 in contact with the push portion 422 and located in the axial inner direction of the floating ring 414 . The cam 423 is a transmission mechanism used to link the adjustment rod 421 and the two cams 423; the transmission mechanism is driven by the adjustment rod 421 to move, and drives the two cams 423 to rotate. The transmission mechanism includes a third rotating member 424 relatively fixed to the adjusting rod 421, a Y-shaped member 425 sleeved on the end of the third rotating member 424, a fourth rotating member 426 rotatably connected to the two bifurcated ends of the Y-shaped member 425, and The fourth rotating member 426 is fixedly connected to the second rotating shaft 427 ; the two cams 423 are respectively fixed on the two second rotating shafts 427 .

It also includes two shell plates 428. The shell plates 428 are provided with through holes 429 that match the floating rings 414. The two shell plates 428 are respectively sleeved outside the two floating rings 414. The two shell plates 428 are fixedly connected, and the shell plates 428 are also provided with an escape slot 430 and/or an escape hole 431 matching the transmission mechanism.

In one or more preferred embodiments, each floating ring 414 is provided with two axially opposite pushing parts 422, and each pushing part 422 has a matching cam 423, when the transmission mechanism is adjusted by the rod 421 When the driving is in action, all the cams 423 are driven to rotate together.

In one or more preferred embodiments, a threaded connection can be adopted between the first pipe body and the second pipe body, and between the second pipe body and the third pipe body, so as to flexibly adjust the whole arm assembly length.

When the shifting mechanism of this embodiment is in use, the manpower rotates upward to lift the adjusting rod, and the upward rotation of the adjusting rod drives the third rotating member to rotate downward. As shown in Figure 29, the end of the Y-shaped member is reserved for the third rotating member. Therefore, the third rotating member descends in it and drives the Y-shaped member to slide horizontally, which can drive the fourth rotating member on both sides to rotate, and then drive the cams on both sides to rotate, respectively. Push in the direction away from each other, and then the floating ring 414 and the positioning ring 417 can be disengaged. At this time, the arm assembly can be manually rotated to shift to a suitable angle, and then the adjusting rod can be released. The floating rings on the sides move closer to each other and engage with their corresponding positioning rings again to complete the positioning.

In one or more preferred embodiments, the Y-shaped piece can be slidably fitted inside the adjustment assembly to further improve the stability of the shifting process.

In one or more preferred embodiments, the end of the Y-shaped member is provided with a first waist-shaped hole that cooperates with the third rotating member, and the two bifurcated ends of the Y-shaped member are provided with a second waist that cooperates with the fourth rotating member. type hole.

In one or more preferred embodiments, for the Y-shaped piece, each forked end of the Y-shaped piece drives the two fourth rotating pieces to rotate at the same time, thereby driving the two pushing parts on the opposite sides of the corresponding floating ring. The cam rotates. This solution can be implemented using any existing linkage structure. The connecting rod transmission method used in Figure 29.

In one or more preferred embodiments, several tension wheels are bypassed before entering the interior of the third tubular body.

In one or more preferred embodiments, several tension wheels 437 are also connected between the two static rings 413 . The outer wall of the static ring 413 is annularly distributed with a plurality of sliding grooves 432, and the inner wall of the floating ring 414 is annularly distributed with a plurality of sliding blocks 433. The floating ring 414 and the static ring 413 are slidably matched with the sliding grooves 432 through the matching sliders 433; the outer end surface of the static ring 413 A number of notches 436 are evenly distributed in the ring, the surface of the limiting member 415 is provided with a groove 434 that matches the outer end surface of the static ring 413, and the groove bottom of the groove 434 is provided with a number of protrusions 435 that match the notches 436; the outer end surface of the static ring 413 is inserted into the notches 436 , the protrusion 35 enters the corresponding notch 436 .

Example 11:

On the basis of Embodiment 1, as shown in FIG. 19 to FIG. 21 , FIG. 3 , FIG. 11 , and FIG. 18 , a support arm structure of a tensile apparatus, such as a fitness machine, includes at least one socket provided on the adjustment base 10 . The slot 11; the positioning block 12 provided on the end head 9 and coupled to the slot 11; the adjusting seat 10 is rotatably connected with the end head 9, and the positioning block 12 can be controlled to enter and exit the slot 11, When the positioning block enters the slot, the end head is locked with the adjustment seat, and when the positioning block is pulled out of the slot, the end head can rotate around the adjustment seat.

In this embodiment, the adjusting seat 10 is assembled in the bracket 1. The bracket 1 is shown in FIG. 22. The bracket 1 is fixedly connected to the rigid member 2, and the rigid member 2 extends outward from the opposite sides of the bracket 1; Two elastic pieces 3 are located on both sides of the rigid piece 2 extending outward, and several rollers 4 are rotatably connected to the elastic pieces 3;

In the natural state as shown in FIG. 21 , the maximum distance between the roller 4 and the bracket 1 is greater than the distance between the side wall on the same side of the rigid member 2 and the bracket 1 .

Wherein, each elastic member 3 is rotatably connected with two rollers 4 , and the two rollers 4 are located at two ends of the elastic member 3 respectively.

The rigid member 3 in this embodiment is a metal plate.

Example 12:

As shown in FIG. 19 to FIG. 25, on the basis of Embodiment 11, the elastic member 3, as shown in FIG. 23, includes two bar-shaped members 301, two bar-shaped members 301 The two third connecting pieces 302 are fixedly connected, and the two third connecting pieces 302 divide the area between the two strips 301 into a first mounting portion 303 , a second mounting portion 304 and a third mounting portion 305 in turn. , the roller 4 is arranged on the first installation part 303 and the third installation part 305 , and the rigid part 2 passes through the second installation part 304 .

The roller 4 is rotatably connected to the installation shaft 5. As shown in FIG. 24, both ends of the installation shaft 5 are provided with first notches 501, and the two strips 301 are inserted into the first notches 501 at both ends of the installation shaft 5 respectively. .

The strip member 301 defines a second notch 306 facing the first installation portion 303 and the third installation portion 305 , and the second notch 306 is inserted into the first notch 501 on the installation shaft 5 .

Two bosses 502 are sleeved on the mounting shaft 5 , and the roller 4 is located between the two bosses 502 .

A limit mechanism is provided on the rigid member 2 , and the limit mechanism is used to limit the sliding of the elastic member 3 on the rigid member 2 . The limiting mechanism includes a first limiting rod 6 and a second limiting rod 7 penetrating the rigid member 2. The two strips 301 on each elastic member 3 are located on the first limiting rod 6 and the second limiting rod. between the two limit rods 7.

Preferably, in this embodiment, the first limit rod 6 is a limit pin, and the second limit rod 7 is a bolt.

Preferably, in this embodiment, the two strip members and the two connecting members are integrally formed.

Example 13:

Based on the elastic assembly of any one of the above embodiments, as shown in FIG. 3 and FIG. 18 , the elastic assembly is located in the track 8 ; the two sides of the rigid member 2 protruding outward and the roller 4 can be connected with each other. The rails 8 are slidingly fitted. The track 8 is arc-shaped, and protrusions 801 are provided on both sides of the inner wall of the track 8; through grooves 201 are provided on both sides of the rigid member 2 extending outward, and an annular groove 401 is provided on the radial outer side of the roller 4, Both the through groove 201 and the annular groove 401 are matched with the protrusion 801 .

Example 14:

On the basis of Embodiment 1, a tension apparatus further includes a support arm position acquisition system as shown in Figure 49, including:

The first detection unit is used to detect the rotation angle of the track around its own axis;

The second detection unit is used to detect the position of the support arm translation along the track;

The third detection unit is used to detect the rotation angle of the support arm around the intersection point of the support arm and the track;

The upper computer is signal-connected with the first detection unit, the second detection unit and the third detection unit.

The first detection unit is a photoelectric sensor or an angle sensor. The second detection unit includes a plurality of sensing devices located on the track, and a generating device located at the translation end of the support arm along the track, and the sensing device can sense the generating device. The induction device is a Hall element, and the generating device is a permanent magnet block. Several pin holes are arranged on the track along the axial direction, and an induction device is arranged in each pin hole.

The third detection unit includes an acceleration measurement module (IMU module), and the acceleration measurement module is used to measure the acceleration of the support arm in the X-axis and Y-axis directions; the Y-axis is parallel to the support-arm axis, and the X-axis is perpendicular to the Y-axis.

The acquisition method of this embodiment is:

The first detection unit detects the rotation angle of the track around its own axis;

The second detection unit detects the position where the support arm translates along the track;

The third detection unit detects the rotation angle of the support arm around the intersection point of the support arm and the track;

The host computer receives the detection signals of the first detection unit, the second detection unit, and the third detection unit, and records and/or outputs the detection results.

The first detection unit is located below the track, and reads the rotation angle of the track in real time and sends it to the host computer.

When the end of the support arm connected to the track is inserted into a corresponding pin hole in the track through the pin, the second detection unit located in the pin hole detects the pin and sends a detection signal to the upper computer, which judges the source position of the signal by the upper computer. The position where the arm translates along the track.

In this embodiment, the third detection unit communicates with the upper computer through a Bluetooth module. The first detection unit, the second detection unit and the upper computer are connected by signal lines.

Example 15:

On the basis of Embodiment 14, the third detection unit includes two acceleration measurement modules respectively used to detect the arms on both sides, and the acceleration measurement modules are used to measure the accelerations of the corresponding arms in the X-axis and Y-axis directions.

In this embodiment, the acceleration measurement module actually measures the value and direction of the gravitational acceleration, and determines the angle of the support arm by acquiring the value of the gravitational acceleration and its direction relative to the support arm.

As shown in Figure 50, when the two support arms are perpendicular to the ground, the X-axis directions corresponding to the two acceleration measurement modules are opposite; in specific work:

After the upper computer receives the signals from the acceleration measurement modules on both sides, it first judges the acceleration measurement values on both sides. If the acceleration vectors in the Y-axis direction on both sides are equal, it is judged that the arms on both sides are vertically downward at this time, and no need Distinguish the left and right arms; if the above conditions are not met, the vector direction of the X-axis acceleration is used to determine which arm the data comes from, so as to achieve a stable distinction between the left and right arms and an independent and accurate judgment of the left and right arm angles.

Example 16:

An arm position acquisition system of an intelligent fitness equipment, as shown in FIG. 1, includes a body 27, a track 8 rotatably connected to the body 27, an adjustment seat 10 slidably fitted in the track 8, and a rotatable connection to the adjustment seat. The end head 9 on the 10, the support arm 28 fixedly connected with the end head 9; also includes,

The first adjustment component is used to adjust the rotation angle of the track 8 on the body 27 around the axis of the track itself;

a second adjusting assembly for adjusting the axial position of the adjusting seat 10 in the track 8 (that is, the position where the support arm translates along the track);

The third adjustment component is used to adjust the rotation angle of the end head 9 on the adjustment base 10 (ie, the rotation angle of the support arm around the intersection point of the support arm and the track).

Example 17:

A support arm position acquisition system for intelligent fitness equipment, on the basis of Embodiment 15, the first adjustment component includes a fifth rotating shaft 31 fixedly connected with the track 8, the fifth rotating shaft 31 is fixedly sleeved with a toothed plate 29, and also includes For the toothed piece 30 matched with the toothed disc 29 , the toothed piece 30 is driven by the driving device to engage and disengage from the toothed disc 29 .

In this embodiment, the driving device drives the toothed member 30 upside down to engage and disengage from the toothed plate 29, as shown in FIG. 1: the right side of FIG. The side is a schematic illustration of the disengagement of the toothed plate 29 and the toothed member 30 from each other.

In one or more preferred embodiments, the driving device is a solenoid valve arranged in the body 27 .

Example 18:

An arm position acquisition system of an intelligent fitness equipment, on the basis of Embodiment 15 or 16, as shown in Figures 3 to 9,

The second adjustment assembly includes a plurality of pin holes 23 axially arranged on the track 8, a positioning pin 24 connected to the adjustment seat 10, and the positioning pin 24 can be inserted into the pin hole 23; it also includes a pin hole for controlling the positioning pin 24 to enter and exit the pin hole 23 for handle 25.

In this embodiment, the Hall element is arranged at the bottom of each pin hole 23 , and the permanent magnet block is fixedly connected to the positioning pin 24 .

It also includes a C-shaped piece 26 rotatably connected to the adjustment base 10, the handle 25 is fixedly connected to the C-shaped piece 26, and the positioning pin 24 is detachably connected to the C-shaped piece 26; The shaft 22 is connected in rotation; the handle 25 and the C-shaped part 26 are connected by bolts; the handle 25 is provided with a hook part 251, and the hook part 251 is provided with a first threaded hole 252; the C-shaped part 26 is provided with a hook part 251 The matching positioning groove 261 is provided with a second threaded hole 262 in the positioning groove 261; the first threaded hole 252 and the second threaded hole 262 are matched with each other, when the hook portion 251 hooks the positioning groove 261, the first threaded hole 252 To the second threaded hole 262 .

The C-shaped piece 26 is provided with a clip 263, and the end of the positioning pin 24 is provided with a notch 241 for holding the clip 263; the positioning pin 24 includes a pin 242, one end of the pin 242 is fixedly connected to the mounting piece 243, and the other end is a movable sleeve A pin cylinder 244 is provided; the gap 241 is located on the mounting member 243, and a second spring 245 is connected between the pin cylinder 244 and the mounting member 243; the positioning pin 24 also includes a sleeve 246 for covering the pin shaft 242, and the top of the sleeve 246 is fixed The flange 247 is connected, the mounting member 243 is fixed on the flange 247, the pin shaft 242 passes through the flange 247 and enters the mounting member 243, and the pin cylinder 244 is movably inserted into the sleeve 246; the second spring 245 is sleeved on the pin shaft 242 In addition, both ends of the second spring 245 are fixedly connected to the pin cylinder 244 and the mounting member 243 respectively.

Example 19:

A support arm position acquisition system of an intelligent fitness equipment, on the basis of Embodiments 15 to 17, as shown in FIGS. 10 to 15 , the third adjustment component includes a ring-shaped ring arranged on the adjustment seat 10 along the rotation direction of the end head 9 For a plurality of distributed slots 11 , a positioning block 12 matching the slot 11 is provided on the end 9 , and the positioning block 12 can enter and exit the slot 11 .

The opposite sides of the adjustment seat 10 are provided with a plurality of annularly distributed slots 11, the end head 9 includes two positioning blocks 12, and the two positioning blocks 12 correspond to the slots 11 on both sides of the adjustment seat 10 respectively; the end head 9 and the adjustment seat 10 is rotatably connected through a third shaft 13 .

Two adjusting rods 15 are arranged inside the end head 9, and the two positioning blocks 12 are respectively located on the two adjusting rods 15; and each positioning block 12 is located at one end of the corresponding adjusting rod 15, and the two adjusting rods 15 are in a scissor structure; The two adjusting rods 15 are hinged around the first rotating shaft 16, and the first rotating shaft 16 is located between the two ends of the adjusting rod 15; one end of the two adjusting rods 15 away from the direction of the positioning block 12 is rotatably connected with a first connecting piece 17; The two first connecting members 17 are hinged to each other around the second rotating shaft 18; it also includes a second connecting member 19 located in the end head 9, the second rotating shaft 18 is installed on one end of the second connecting member 19, and the other side of the second connecting member 19. One end extends in the direction away from the adjusting rod 15 in the axial direction of the end head 9; and the end of the second connecting piece 19 away from the second rotating shaft 18 is connected with the first spring 20 between the inner wall of the end head 9; The two connecting members 19 are matched with the second through grooves 21 , the length direction of the second through grooves 21 is parallel to the axis of the end head 9 , and the second connecting members 19 can move in the second through grooves 21 .

In this embodiment, due to the existence of the mechanical structure gear formed by the slot 11, the accuracy of the detection data of the third detection unit is not high, and it is only necessary to obtain the approximate angle through the IMU module, and the host computer can determine the current situation. In which slot 11 the positioning block 12 is located.

In Embodiment 1, the first adjustment assembly includes a fifth rotating shaft 31 fixedly connected to the rail 8 , the fifth rotating shaft 31 is fixedly sleeved with a toothed plate 29 , and further includes a toothed plate 29 for matching with the toothed plate 29 . The toothed member 30 is driven by the driving device to engage and disengage from the toothed plate 29 .

In this embodiment, the driving device drives the toothed member 30 upside down to engage and disengage from the toothed plate 29, as shown in FIG. 2: the right side of FIG. The side is a schematic illustration of the disengagement of the toothed plate 29 and the toothed member 30 from each other.

In one or more preferred embodiments, the driving device is a solenoid valve arranged in the body 27 .

Example 20:

A tensile device, on the basis of Embodiment 1, as shown in Figures 3 to 9,

The second adjustment assembly includes a plurality of pin holes 23 axially arranged on the track 8, a positioning pin 24 connected to the adjustment base 10, and the positioning pin 24 can be inserted into the pin hole 23; The handle 25 is used to control the positioning pin 24 to enter and exit the pin hole 23 .

It also includes a C-shaped piece 26 rotatably connected to the adjustment base 10, the handle 25 is fixedly connected to the C-shaped piece 26, the positioning pin 24 is detachably connected to the C-shaped piece 26; the C-shaped piece 26 is connected to the The adjustment bases 10 are connected by rotation through the fourth shaft 22; the handle 25 and the C-shaped piece 26 are connected by bolts; the handle 25 is provided with a hook portion 251, and the hook portion 251 is provided with a first thread A hole 252; a positioning groove 261 matching the hook portion 251 is formed on the C-shaped member 26, and a second threaded hole 262 is formed in the positioning groove 261; the first threaded hole 252 and the second threaded hole 262 are matched with each other, and when the hook portion 251 hooks the positioning groove 261 , the first threaded hole 252 faces the second threaded hole 262 .

The C-shaped piece 26 is provided with a clip 263, and the end of the positioning pin 24 is provided with a notch 241 for holding the clip 263; the positioning pin 24 includes a pin 242, one end of the pin 242 The mounting member 243 is fixedly connected, and the other end is movably sleeved with a pin cylinder 244; the gap 241 is located on the mounting member 243, and a second spring 245 is connected between the pin cylinder 244 and the mounting member 243; the positioning pin 24 also includes a On the sleeve 246 covering the pin shaft 242 , the top of the sleeve 246 is fixed with a connecting flange 247 , the mounting member 243 is fixed on the flange 247 , and the pin shaft 242 passes through the flange 247 and enters the mounting member 243 , the pin cylinder 244 is movably inserted into the sleeve 246 ; the second spring 245 is sleeved outside the pin shaft 242 , and both ends of the second spring 245 are fixedly connected to the pin cylinder 244 and the mounting member 243 respectively.

In one or more preferred embodiments, the track 8 is arc-shaped, and protrusions 801 are provided on both sides of the inner wall of the track 8; An annular groove 401 is defined on the radially outer side of the roller 4 , and the first through groove 201 and the annular groove 401 are matched with the protrusion 801 .

Example 21:

A tensile device, on the basis of any of the above embodiments, as shown in FIGS. 10 to 15 , the third adjustment assembly includes a plurality of slots arranged on the adjustment seat 10 and annularly distributed along the rotation direction of the end head 9 11. A positioning block 12 matching the slot 11 is provided on the end head 9, and the positioning block 12 can enter and exit the slot 11.

There are several annularly distributed slots 11 on opposite sides of the adjustment seat 10 , and the end head 9 includes two positioning blocks 12 , and the two positioning blocks 12 correspond to the slots 11 on both sides of the adjustment seat 10 respectively; The end head 9 is rotatably connected with the adjusting seat 10 through the third rotating shaft 13 .

Two adjusting rods 15 are arranged inside the end head 9, and the two positioning blocks 12 are respectively located on the two adjusting rods 15; and each positioning block 12 is located at one end of the corresponding adjusting rod 15, and the two adjusting rods 15 are scissor-shaped structure; the two adjusting rods 15 are hinged to each other around the first rotating shaft 16, and the first rotating shaft 16 is located between the two ends of the adjusting rod 15; A connecting piece 17; the two first connecting pieces 17 are hinged to each other around the second rotating shaft 18; it also includes a second connecting piece 19 located in the end head 9, the second rotating shaft 18 is installed at one end of the second connecting piece 19, so The other end of the second connecting member 19 extends in the direction away from the adjusting rod 15 along the axial direction of the end head 9; Spring 20; the surface of the end head 9 is provided with a second through groove 21 that matches the second connecting piece 19, the length direction of the second through groove 21 is parallel to the axis of the end head 9, and the second connecting piece 19 can move in the second through groove 21 .

Example 22:

A tensile device, on the basis of any of the above-mentioned embodiments, as shown in Figures 16 to 25,

The elastic member 3 includes two strip members 301, and the two strip members 301 are fixedly connected by two third connecting members 302, and the two third connecting members 302 connect the areas between the two strip members 301 in sequence. It is divided into a first installation part 303 , a second installation part 304 and a third installation part 305 , the roller 4 is arranged on the first installation part 303 and the third installation part 305 , and the rigid part 2 passes through the second installation part section 304;

The roller 4 is rotatably connected to the installation shaft 5, and both ends of the installation shaft 5 are provided with first gaps 501, and two strips 301 are respectively inserted into the first gaps 501 at both ends of the installation shaft 5; A second notch 306 facing the first mounting portion 303 and the third mounting portion 305 is provided on the shaped member 301, and the second notch 306 is inserted into the first notch 501 on the mounting shaft 5; the mounting shaft 5 is covered with a sleeve Two bosses 502 are provided, and the roller 4 is located between the two bosses 502;

The rigid member 2 is provided with a limit mechanism, which is used to limit the sliding of the elastic member 3 on the rigid member 2; Two limit rods 7 , the two strips 301 on each elastic piece 3 are located between the first limit rod 6 and the second limit rod 7 .

In this embodiment, each elastic member 3 is rotatably connected with two rollers 4 , and the two rollers 4 are located at two ends of the elastic member 3 respectively.

In this embodiment, the adjusting seat 10 is assembled in the bracket 1. The bracket 1 is shown in FIG. 22. The bracket 1 is fixedly connected to the rigid member 2, and the rigid member 2 extends outward from the opposite sides of the bracket 1; Two elastic pieces 3 are located on both sides of the rigid piece 2 extending outward, and a plurality of rollers 4 are rotatably connected to the elastic pieces 3 .

In the natural state as shown in FIG. 21 , the maximum distance between the roller 4 and the bracket 1 is greater than the distance between the side wall on the same side of the rigid member 2 and the bracket 1 .

Example 23:

On the basis of Embodiment 1, a tensile apparatus further includes a connecting device, such as a fitness accessory connecting head. As shown in FIG. 51 , the connecting device includes a first connecting head 51 and a second connecting head 55 . The structure of the first connecting head is shown in FIG. 52 . The limiting member includes a first connecting member 52 and two first limiting blocks 521 disposed on the side surfaces of the first connecting member 52, the two first limiting blocks 521 are located on the same plane, and the two first limiting blocks 521 is on the same line. The first limiting member is provided with a second limiting groove corresponding to the second limiting member;

The structure of the second connecting head 55 is shown in FIG. 53 , the second connecting head is provided with a first limiting groove corresponding to the first limiting member; The two limiting members include a second connecting member 57 and two second limiting blocks 571 disposed on the side of the second connecting member 57 . The two second limiting blocks 571 are located on the same plane, and the two second limiting blocks 571 on the same straight line. The first limit groove includes a first groove 56 and two second grooves 561 arranged on the side of the first groove 56. The first limit block 521 corresponds to the second groove 561 one-to-one. When the component is fixed in the first limit groove, the first limit block 521 is fixed in the second groove 561. As shown in the figure, when the first limit block is fixed in the second groove, the second groove A side wall of the hood shields the first limit block, so that the first limit block cannot continue to rotate. When it needs to be separated, the first limit block rotates in reverse and leaves the second groove.

The second limit groove includes a third groove 54 and two fourth grooves 533 located in the third groove 54. The second limit blocks 571 correspond to the fourth grooves 533 one-to-one, and the second limit member is fixed When in the second limiting groove, the second limiting block 571 is fixed in the fourth groove 533 . The line where the two fourth grooves 533 are located is perpendicular to the line where the two first limiting blocks 521 are located.

When in use, the first connector is inserted into the second connector. When inserting, the first connector on the first connector is inserted into the first groove on the second connector, and the second connector is inserted into the first connector. In the three grooves, after inserting, the first connector and the second connector are rotated 90 degrees relative to each other. After the rotation, the second limit block corresponds to the fourth groove and can be fixed in the fourth groove. The limit block is fixed in the second groove. After the first connector and the second connector are connected, the cross-sectional view of the vertical surface A is shown in Figure 54, and the cross-sectional view of the vertical surface B is shown in Figure 55 , and the lines where the two first limiting blocks 521 are located are located in the vertical plane A, and the lines where the two fourth grooves are located are located in the vertical plane B. After fixing, the first connector and the second connector are stably connected through the action of the fourth groove on the second limit block and the action of the second groove on the first limit block.

When it is necessary to separate the first connector and the second connector, press the first connector and the second connector to make the second limiter move further toward the direction close to the inner bottom of the first groove, so that the second limiter Leave the fourth groove, and then rotate the first connector and the second connector 90 degrees in the opposite direction, so that the line where the two first limit blocks are located and the line where the two second limit blocks are located return to a state of being parallel to each other, and then The first connecting piece is taken out from the first groove, and the second connecting piece is taken out from the third groove.

FIG. 51 shows the relative positional relationship between the first connector and the second connector after the first connector is inserted into the second connector and rotated and fixed with the second connector.

Example 24:

On the basis of Embodiment 23, only one first limiting block 521 may be provided on the first connecting piece 52 of the connecting device, and the second limiting piece includes the second connecting piece 57 and the A second limit block 71, a fourth groove is provided on the third groove, the fourth groove and the first limit block are not on the same line, when connecting, insert the first connector into the second connector , when inserting, the first connector on the first connector is inserted into the first groove on the second connector, at this time the second connector is inserted into the third groove, after insertion, the first connector and the second connector are inserted. The two connecting heads rotate relative to each other. After the rotation, the second limit block corresponds to the fourth groove and can be fixed in the fourth groove, and the first limit block is fixed in the second groove.

When it is necessary to separate the first connector and the second connector, press the first connector and the second connector to make the second stopper leave the fourth groove, and then rotate the first connector and the second connector in the opposite direction. , so that the first limit block leaves the second groove, and the second limit block leaves the fourth groove.

Example 25:

On the basis of Embodiment 23, a connecting block 53 is detachably connected to the open end of the third groove 54 , and the third groove 54 is located on the first connecting piece 52 . The structure of the connecting block is shown in Figure 56, the connecting block 53 is provided with a through hole 531, the second limiting member enters the third groove 54 through the through hole 531, and the connecting block 53 is provided with a baffle 532, so The baffle 532 is located in the third groove 54 , and the fourth groove 533 is located on the baffle 532 . The connecting block is connected with the first groove on the first connecting piece by bolts, the two fourth grooves are connected on the baffle plate, and the second connecting piece drives the second limiting piece to move toward the direction close to the inner bottom of the third groove , when the second limiter moves to the position away from the baffle, rotate the first connector and the second connector relatively, so that the second limiter moves to the position corresponding to the fourth groove, and adjust the first connector and the second connecting head to move the second connecting piece away from the inner bottom of the third groove, so that the second limiting piece is fixed in the fourth groove, and the first limiting rod is fixed on the second In the groove, the first connector and the second connector are fixedly connected.

When separating, press the first connector and the second connector to move the second connector toward the direction close to the first groove. At this time, the second stopper leaves the fourth groove, and then rotate the first connector in the opposite direction. After the head and the second connecting head are rotated, the first limit block leaves the second groove, the second limit block is separated from the fourth groove, and can be taken out from the through hole, thereby realizing separation.

On this basis, a spring 541 is disposed in the third groove 54 , and the expansion and contraction direction of the spring 541 is the same as the opening direction of the third groove 54 . When connecting, when the second connecting piece is inserted into the third groove, the second connecting piece drives the spring to compress, and after relatively rotating the first connecting head and the second connecting head, the second limiting block corresponds to the fourth groove, and the spring The second limit block is driven to be located in the fourth groove, and the second limit block can be further fixed by the spring. When separation is required, the external force acts on the first connector and the second connector, and the second limit block Leave the fourth groove and press the spring further. The arrangement of the spring further improves the stability of the fixation.

When the connecting device is in use, a protective shell 59 is detachably connected to the second connecting head 55 . The first connecting head 51 is provided with a connecting groove, and the connecting groove is used to connect the fitness accessories. The second connecting head 55 is provided with a connecting hole 58 , and the connecting hole 58 is used for connecting the tension rope. The protective shell 59 is provided with a fixing hole 591, the fixing hole 591 corresponds to the connecting hole 58, and the tension rope is connected with the connecting hole through the fixing hole when in use. There will be a constant tension on the tension rope through the adjustment device, which is equivalent to the isotonic mode in strength training. The tension rope is connected with different fitness accessories through the first connector and the second connector, which can meet the needs of fitness enthusiasts.

Example 26:

On the basis of Embodiment 1, a tension apparatus further includes the end assembly of the tension exercise support arm shown in FIGS. 57 , 3 , and 16-18 , including the bracket 1 , and also including the bracket 1 connected to the bracket 1 . The elastic component and the adjustment seat 10;

The elastic assembly includes a rigid member 2 connected in the bracket 1, and the rigid member 2 extends outward from opposite sides of the bracket 1; and also includes two elastic pieces respectively located on the two sides of the rigid member 2 extending outward. Part 3, a plurality of rollers 4 are rotatably connected to the elastic part 3; in a natural state, the maximum distance between the rollers 4 and the bracket 1 is greater than the distance between the side wall on the same side of the rigid part 2 and the bracket 1;

The adjusting seat 10 is connected to the terminal 9 by rotation, and the adjusting base 10 is provided with a plurality of slots 11 annularly distributed along the rotation direction of the terminal 9 , and the terminal 9 is provided with a positioning block 12 that matches the slot 11 . , the positioning block 12 can enter and exit the slot 11 .

As shown in FIG. 3 and FIG. 18 , the elastic component of this embodiment is located in the track 8 ; both sides of the rigid member 2 extending outward and the rollers 4 can be slidably matched with the track 8 . The rail 8 is arc-shaped, and protrusions 801 are provided on both sides of the inner wall of the rail 8; first through grooves 201 are provided on both sides of the rigid member 2 extending outward, and an annular groove is provided on the radial outer side of the roller 4 401 , the first through groove 201 and the annular groove 401 are matched with the protrusion 801 .

As shown in FIG. 15 and FIG. 4 , the adjusting seat 10 is slidably fitted in the track 8 . The track 8 is distributed with a number of pin holes 23 in the axial direction, and also includes a positioning pin 24 connected to the adjusting seat 10 . The pin 24 can be inserted into the pin hole 23 ; a handle 25 is also included for controlling the positioning pin 24 to enter and exit the pin hole 23 .

Preferably, each elastic member 3 is rotatably connected with two rollers 4 , and the two rollers 4 are located at two ends of the elastic member 3 respectively.

Example 27:

An end assembly of a tensile exercise support arm, on the basis of Embodiment 26, as shown in Figures 19 to 25, the elastic member 3 includes two strip members 301, and the two strip members 301 are composed of two first strips. The three connecting pieces 302 are fixedly connected, and the two third connecting pieces 302 divide the area between the two strips 301 into a first mounting portion 303, a second mounting portion 304, and a third mounting portion 305 in turn. The rollers 4 is provided on the first mounting portion 303 and the third mounting portion 305, and the rigid member 2 passes through the second mounting portion 304. The roller 4 is rotatably connected to the installation shaft 5 . The two ends of the installation shaft 5 are provided with first notches 501 , and the two strips 301 are respectively inserted into the first notches 501 at both ends of the installation shaft 5 . A second notch 306 facing the first mounting portion 303 and the third mounting portion 305 is defined on the strip 301, and the second notch 306 is inserted into the first notch 501 on the mounting shaft 5; the mounting shaft Two bosses 502 are sleeved on 5 , and the roller 4 is located between the two bosses 502 . The rigid member 2 is provided with a limit mechanism, and the limit mechanism includes a first limit rod 6 and a second limit rod 7 penetrating the rigid member 2 , and two strips on each elastic member 3 301 are located between the first limit rod 6 and the second limit rod 7 .

Preferably, in this embodiment, the first limit rod 6 is a limit pin, and the second limit rod 7 is a bolt.

Preferably, in this embodiment, the two strip members and the two connecting members are integrally formed.

Preferably, in this embodiment, the rigid member 3 is a metal plate.

Example 28:

An end assembly of a tensile exercise support arm, on the basis of any of the above embodiments, as shown in Figures 10 to 15, the opposite sides of the adjustment seat 10 have a plurality of annularly distributed slots 11, The end head 9 includes two positioning blocks 12 , and the two positioning blocks 12 respectively correspond to the slots 11 on both sides of the adjustment base 10 ; Two adjusting rods 15 are arranged inside the end head 9, and the two positioning blocks 12 are respectively located on the two adjusting rods 15; and each positioning block 12 is located at one end of the corresponding adjusting rod 15, and the two adjusting rods 15 are scissor-shaped structure. The two adjusting rods 15 are hinged to each other around a first rotating shaft 16, and the first rotating shaft 16 is located between the two ends of the adjusting rod 15; one end of the two adjusting rods 15 away from the direction of the positioning block 12 is rotatably connected with a first connecting piece 17; The two first connecting pieces 17 are hinged around the second rotating shaft 18. It also includes a second connecting piece 19 located in the end head 9, the second rotating shaft 18 is mounted on one end of the second connecting piece 19, and the other end of the second connecting piece 19 is axially directed away from the adjusting rod along the end head 9 15; and one end of the second connecting member 19 away from the second rotating shaft 18 is connected to the first spring 20 with the inner wall of the end head 9. The surface of the end head 9 is provided with a second through groove 21 that matches the second connecting piece 19 , the length direction of the second through groove 21 is parallel to the axis of the end head 9 , and the second connecting piece 19 can move in the second through groove 21 .

In this embodiment, when the angle of the end head 9 needs to be adjusted, the end of the adjusting rod 15 on either side can be pulled outward to drive the positioning blocks on both sides to open at the same time. Each positioning block can be automatically retracted and reset.

Preferably, a cover plate 14 is movably sleeved on the third rotating shaft 13 , the cover plate 14 can rotate around the third rotating shaft 13 along with the end head 9 , and the cover plate 14 is used to block the slot 11 .

Example 29:

An end assembly of a support arm for tension exercise, on the basis of any of the above-mentioned embodiments, as shown in Figures 15 and 4 to 9, includes an adjustment seat 10 for connecting the end of the support arm, and the adjustment seat 10 slides Fitted in the track 8, a plurality of pin holes 23 are distributed on the track 8 along the axial direction, and also includes a positioning pin 24 connected with the adjusting seat 10, the positioning pin 24 can be inserted into the pin hole 23; also includes A handle 25 for controlling the positioning pin 24 to enter and exit the pin hole 23 . Several pin holes 23 are equally spaced along the axial direction on the track 8 .

It also includes a C-shaped piece 26 rotatably connected to the adjusting base 10 , the handle 25 is fixedly connected to the C-shaped piece 26 , and the positioning pin 24 is detachably connected to the C-shaped piece 26 . The C-shaped piece 26 and the adjusting seat 10 are rotatably connected through the fourth rotating shaft 22 .

The handle 25 and the C-shaped piece 26 are connected by bolts. A hook portion 251 is provided on the handle 25, and a first threaded hole 252 is defined on the hook portion 251; A second threaded hole 262 is formed in the groove 261; the first threaded hole 252 and the second threaded hole 262 are matched with each other, when the hook portion 251 hooks the positioning groove 261, the first threaded hole 252 faces the second threaded hole 262. The C-shaped piece 26 is provided with a clip 263 , and the end of the positioning pin 24 is provided with a notch 241 for holding the clip 263 . The positioning pin 24 includes a pin shaft 242, one end of the pin shaft 242 is fixedly connected to the mounting member 243, and the other end is movably sleeved with a pin cylinder 244; the gap 241 is located on the mounting member 243, and the pin cylinder 244 is connected to the mounting member. A second spring 245 is connected between 243 . The positioning pin 24 further includes a sleeve 246 for covering the pin shaft 242 , the top of the sleeve 246 is fixed with a connecting flange 247 , the mounting member 243 is fixed on the flange 247 , and the pin shaft 242 passes through The flange 247 enters the mounting member 243 , and the pin barrel 244 is movably inserted into the sleeve 246 . The second spring 245 is sleeved outside the pin shaft 242, and both ends of the second spring 245 are fixedly connected with the pin cylinder 244 and the mounting member 243, respectively.

Among them, FIG. 9 is a partial schematic diagram of the positioning pin after the sleeve 246 is hidden.

When using this embodiment, the user only needs to lift the handle 25 upwards to move the adjusting seat 10 axially in the track, and then loosen the handle 25 to adjust the support arm axially after moving in place.

Example 30:

On the basis of Embodiment 1, the tensile apparatus shown in FIGS. 58 to 60 , such as a fitness machine, also includes a track 8 rotatably connected to the body 27 , an adjustment seat 10 slidably fitted in the track 8 , and a rotatable connection on the The end head 9 on the adjustment base 10, the support arm 28 fixedly connected with the end head 9; the screen 32 is arranged on the front of the body 27; it also includes a resistance component for providing resistance for the two groups of pull ropes, and the resistance component includes a motor 36, a differential speed 37, a transmission belt coupled between the motor 36 and the differential 37, and also includes a tensioning mechanism disposed between the motor 36 and the differential 37, the tensioning mechanism can be adjusted to apply pressure to the transmission belt to adjust the transmission The tension of the belt. Two sets of pull ropes coupled to the differential 37 are coiled inside the body 27, and the two sets of pull ropes pass through the arms 28 on both sides respectively and are connected to the actuator.

Example 31:

The fitness machine, based on Embodiment 30, as shown in Figure 60 and Figure 61, the tensioning mechanism includes:

connection board;

The tension wheel 38 and the adjusting rod arranged on the connecting plate;

The fulcrum rod passing through the connecting plate;

A pressurized structure arranged on the fulcrum rod;

The pressing structure acts on the adjusting rod to drive the connecting plate to rotate with the fulcrum rod as the pivot, so that the tension wheel presses the transmission belt to adjust the tension of the transmission belt.

The compression structure is a torsion spring 147. The torsion spring 147 includes two ends and a rotating spring between the two ends. One end of the torsion spring is connected to the adjusting rod 146, and the other end is connected to the fixed structure 149 in the fitness machine. The rotating spring Set on the outer wall of the fulcrum rod 145 , the torsion spring 147 exerts pressure on the fixing structure 149 and the adjusting rod 146 . When in use, the torsion spring releases the internal force and exerts the force on the adjusting rod 146 and the fixing structure 149. At this time, the fulcrum rod 145 is fixed as a fulcrum, and the adjusting rod 146, the fulcrum rod 145 and the tension wheel 144 form a lever device, the pressure exerted on the adjusting rod 146 is transmitted to the transmission belt through the tension wheel 144 of the lever device, so that the tension wheel 144 exerts pressure on the transmission belt, and then the transmission belt is in a tensioned state.

Preferably, one end of the fulcrum rod 145 is connected to the mounting plate 148 through the connecting plate 143 . One end of the transmission belt is connected to the motor 36 , the other end of the transmission belt is connected to the differential 37 , and the tension pulley 144 is located between the motor 36 and the differential 37 . One end of the fulcrum rod 145 is threadedly connected to the mounting plate 148 through the connecting plate 143 . The distance between the tension wheel 144 and the fulcrum rod 145 is greater than the distance between the adjustment rod 146 and the fulcrum rod 145 . The tension pulley 144 is capable of circumferential rotation on the connecting plate 143 .

When installing, first install the motor and differential wheel on the mounting plate, and then install the connecting plate of the device on the mounting plate. During installation, fix the connecting plate on the mounting plate through the fulcrum rod on the connecting plate, and After installation, the fulcrum rod and the connecting plate are stationary with each other, then set the transmission belt on the side of the pressure tension wheel, and finally break the pressure tension wheel in the opposite direction, and put the relatively loose transmission belt on the motor and the differential wheel to realize Install quickly.

A transmission belt is coupled between the motor 36 and the differential 37, and a pull rope is coupled between the differential 37 and the brake, that is, a pull rope is connected to the differential wheel, and the other end of the pull rope is connected to the brake. When a constant current is input to the motor, the motor will output a constant torque, the torque on the motor is transmitted to the differential wheel through the transmission belt, and the differential wheel is transmitted to the pull rope, and then pull the rope There will be a constant tension output on the upper, and the user can directly pull the brake for tension training when using it.

Preferably, the actuator may be a holding piece for the user to hold, or a holding connecting piece.

Example 32:

A fitness machine, on the basis of any of the above-mentioned embodiments, as shown in Figures 3 to 25, also includes a first adjustment component for adjusting the rotation angle of the track 8 on the body 27; a second adjustment component, It is used to adjust the axial position of the adjustment seat 10 in the track 8 ; the third adjustment assembly is used to adjust the rotation angle of the end head 9 on the adjustment seat 10 .

Preferably, the first adjustment assembly includes a fifth rotating shaft 31 fixedly connected to the track 8 , the fifth rotating shaft 31 is fixedly sleeved with a toothed plate 29 , and also includes a toothed member 30 for matching with the toothed plate 29 . 30 is driven by the driving device to engage and disengage with the toothed disc 29 .

In this embodiment, the driving device drives the toothed member 30 upside down to engage and disengage from the toothed plate 29, as shown in Figure 59: the right side of Figure 59 is a schematic diagram of the toothed plate 29 meshing with the toothed member 30, and the left The side is a schematic illustration of the disengagement of the toothed plate 29 and the toothed member 30 from each other. Preferably, the driving device is a solenoid valve arranged in the body 27 .

Preferably, the second adjustment assembly includes a plurality of pin holes 23 axially arranged on the track 8, a positioning pin 24 connected to the adjustment base 10, and the positioning pin 24 can be inserted into the pin hole 23; it also includes a positioning pin 24 for controlling Handle 25 that goes in and out of pin hole 23.

It also includes a C-shaped piece 26 rotatably connected to the adjustment base 10, the handle 25 is fixedly connected to the C-shaped piece 26, and the positioning pin 24 is detachably connected to the C-shaped piece 26; The shaft 22 is connected in rotation; the handle 25 and the C-shaped part 26 are connected by bolts; the handle 25 is provided with a hook part 251, and the hook part 251 is provided with a first threaded hole 252; the C-shaped part 26 is provided with a hook part 251 The matching positioning groove 261 is provided with a second threaded hole 262 in the positioning groove 261; the first threaded hole 252 and the second threaded hole 262 are matched with each other, when the hook portion 251 hooks the positioning groove 261, the first threaded hole 252 To the second threaded hole 262 .

The C-shaped piece 26 is provided with a clip 263, and the end of the positioning pin 24 is provided with a notch 241 for holding the clip 263; the positioning pin 24 includes a pin 242, one end of the pin 242 is fixedly connected to the mounting piece 243, and the other end is a movable sleeve A pin cylinder 244 is provided; the gap 241 is located on the mounting member 243, and a second spring 245 is connected between the pin cylinder 244 and the mounting member 243; the positioning pin 24 also includes a sleeve 246 for covering the pin shaft 242, and the top of the sleeve 246 is fixed The flange 247 is connected, the mounting member 243 is fixed on the flange 247, the pin shaft 242 passes through the flange 247 and enters the mounting member 243, and the pin cylinder 244 is movably inserted into the sleeve 246; the second spring 245 is sleeved on the pin shaft 242 In addition, both ends of the second spring 245 are fixedly connected to the pin cylinder 244 and the mounting member 243 respectively.

In one or more preferred embodiments, the track 8 is arc-shaped, and protrusions 801 are provided on both sides of the inner wall of the track 8; An annular groove 401 is opened to the outside, and both the first through groove 201 and the annular groove 401 are matched with the protrusion 801 .

Preferably, the third adjustment assembly includes a plurality of slots 11 arranged on the adjustment base 10 and distributed annularly along the rotation direction of the end head 9 . The end head 9 is provided with a positioning block 12 matching the slot 11 , and the positioning block 12 can enter and exit Slot 11.

The opposite sides of the adjustment seat 10 are provided with a plurality of annularly distributed slots 11, the end head 9 includes two positioning blocks 12, and the two positioning blocks 12 correspond to the slots 11 on both sides of the adjustment seat 10 respectively; the end head 9 and the adjustment seat 10 is rotatably connected through a third shaft 13 .

Two adjusting rods 15 are arranged inside the end head 9, and the two positioning blocks 12 are respectively located on the two adjusting rods 15; and each positioning block 12 is located at one end of the corresponding adjusting rod 15, and the two adjusting rods 15 are in a scissor structure; The two adjusting rods 15 are hinged around the first rotating shaft 16, and the first rotating shaft 16 is located between the two ends of the adjusting rod 15; one end of the two adjusting rods 15 away from the direction of the positioning block 12 is rotatably connected with a first connecting piece 17; The two first connecting members 17 are hinged to each other around the second rotating shaft 18; it also includes a second connecting member 19 located in the end head 9, the second rotating shaft 18 is installed on one end of the second connecting member 19, and the other side of the second connecting member 19. One end extends in the direction away from the adjusting rod 15 in the axial direction of the end head 9; and the end of the second connecting piece 19 away from the second rotating shaft 18 is connected with the first spring 20 between the inner wall of the end head 9; The two connecting members 19 are matched with the second through grooves 21 , the length direction of the second through grooves 21 is parallel to the axis of the end head 9 , and the second connecting members 19 can move in the second through grooves 21 .

Example 33:

A fitness apparatus, as shown in Figures 3 to 25 and Figures 58 to 61, on the basis of any of the above-mentioned embodiments, also includes an elastic member 3 and a rigid member 2 connected with the adjustment seat 10; When the external force is within the threshold, the adjusting seat 10 is coupled with the track 8 through the roller 4 on the elastic member 3;

The elastic member 3 includes two bar-shaped members 301, and the two bar-shaped members 301 are fixedly connected by two connecting members 302, and the two connecting members 302 divide the area between the two bar-shaped members 301 into a first installation portion in turn. 303, the second installation part 304, the third installation part 305, the roller 4 is arranged on the first installation part 303 and the third installation part 305, the rigid part 2 passes through the second installation part 304;

The roller 4 is rotatably connected to the installation shaft 5, the two ends of the installation shaft 5 are provided with first gaps 501, and the two strips 301 are respectively inserted into the first gaps 501 at both ends of the installation shaft 5; The second notch 306 of the first installation part 303 and the third installation part 305 is inserted into the first notch 501 on the installation shaft 5; the installation shaft 5 is sleeved with two bosses 502, and the roller 4 is located in the two between the bosses 502;

A limit mechanism is arranged on the rigid part 2, and the limit mechanism is used to limit the sliding of the elastic part 3 on the rigid part 2; The two strip members 301 on the elastic member 3 are both located between the first limit rod 6 and the second limit rod 7 .

Preferably, it also includes a control board 39 located in the body 27 , a partition 40 is arranged inside the body 27 , and the resistance components and the control board 39 are respectively located on both sides of the partition 40 ; a number of cooling fans 141 are arranged on the partition 40 ; A number of heat dissipation holes 142 are opened.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. In addition, the term "connected" used herein may be directly connected or indirectly connected via other components unless otherwise specified.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present disclosure in detail. It should be understood that the above descriptions are only specific embodiments of the present disclosure, and are not intended to limit the scope of the present disclosure. Within the scope of protection, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims (20)

1. A tension device, comprising:

   body(27);

   Rotate the track (8) connected to the body (27);

   an adjusting seat (10) that is slidably fitted in the track (8);

   Rotate the end head (9) connected to the adjusting seat (10);

   a support arm (28) fixedly connected with the end head (9);

   a first adjustment assembly for adjusting the rotation angle of the rail (8) on the body (27);

   a second adjusting assembly for adjusting the axial position of the adjusting seat (10) in the track (8);

   a third adjusting assembly for adjusting the rotation angle of the end head (9) on the adjusting seat (10); and

   an elastic piece (3) and a rigid piece (2) connected with the adjusting seat (10);

   Wherein, when the external force borne by the adjusting seat (10) is within the threshold value, the adjusting seat (10) is coupled with the track (8) through the roller (4) on the elastic member (3); When the external force exceeds the threshold value, the adjusting seat is coupled with the rail (8) through the rigid part (2).
2. A tensioning device according to claim 1, further comprising a mirror surface (438) located on the surface of the body (27), wherein the body (27) is further provided with two winders, A motor used to provide movement resistance for the pull ropes, and a differential mechanism used to synchronously retract and unwind the two groups of pull ropes; the body (27) is provided with slide rails (439) on opposite two side walls, and the arm assembly (412) ) is matched to the slide rail (439) through an adjusting assembly, the adjusting assembly includes a shifting mechanism and a first positioning mechanism, and the shifting mechanism is used to adjust the support arm assembly (412) compared to the sliding rail (439) The first positioning mechanism is used to position the support arm assembly (412) on the adjustment assembly.
3. The tension apparatus according to claim 2, wherein the adjustment assembly comprises two static rings (413) facing each other, a floating ring (413) slidably sleeved outside each static ring (413) in the axial direction 414), the outer side of the static ring (413) is fixedly connected to the limiter (415), and a first elastic piece (416) is arranged between the limiter (415) and the corresponding floating ring (414), the first elastic The component (416) exerts a force close to each other for the two floating rings (414); one end and both sides of the support arm assembly (412) are respectively engaged with the two floating rings (414); the shifting mechanism is used for Move the two floating rings (414) away from each other.
4. A tensile apparatus according to claim 3, wherein the first positioning mechanism comprises a positioning ring (417) located at one end of the support arm assembly (412), and a plurality of annularly distributed uniformly distributed rings located at the end face of the floating ring (414). A first meshing tooth (418); the positioning ring (417) is movably sleeved outside the two static rings (413) and located between the two floating rings (414), and the positioning rings (417) are provided on both sides of the end faces a plurality of second meshing teeth (419), the second meshing teeth (419) and the first meshing teeth (418) are capable of meshing with each other; the support arm assembly (412) includes a first pipe body (4121) connected in sequence , the second pipe body (4122), the third pipe body (4133), the positioning ring (417) is located on the third pipe body (4133), and the interior of the positioning ring (417) communicates with the third pipe body (4133) ; The positioning ring (417) is provided with a wire opening (420).
5. A pulling force apparatus according to claim 3, wherein the shifting mechanism comprises a first adjusting rod (421) located outside the adjusting assembly, a pushing portion (422) fixed on the floating ring (414), and The pushing portion (422) contacts the cam (423) located in the axial inner direction of the floating ring (414), and the transmission mechanism for linking the first adjusting rod (421) and the two cams (423); The transmission mechanism is driven by the first adjusting rod (421) to act, and drives two cams (423) to rotate.
6. The tension apparatus according to claim 3, wherein a plurality of tension wheels (437) are further connected between the two static rings (413); a plurality of chutes (432) are uniformly distributed on the outer wall of the static ring (413), A plurality of sliding blocks (433) are evenly distributed on the inner wall of the floating ring (414), and the floating ring (414) and the static ring (413) are slidably matched with the sliding grooves (432) through the sliding blocks (433) that match each other; A plurality of notches (436) are evenly distributed on the outer end surface of the stationary ring (413), and a groove (434) matching the outer end surface of the stationary ring (413) is provided on the surface of the limiting member (415). ) A plurality of protrusions (435) matching the gaps (436) are arranged at the bottom of the groove; the outer end face of the static ring (413) is inserted into the gaps (436), and the protrusions (435) enter the corresponding gaps (436) .
7. A tensioning apparatus according to claim 1, further comprising two winders (43) for retracting two sets of pulling ropes, a resistance component for providing movement resistance for the pulling ropes, and for allowing the pulling ropes to pass through A passing arm assembly (412), and an adjustment assembly for adjusting the angle of the arm assembly (412).
8. A tensile apparatus according to claim 7, wherein the resistance component comprises a biaxial motor (41), a differential mechanism matched with the biaxial motor (41), and two wire winders (43) They are respectively connected to the two output ends of the biaxial motor (41).
9. A pulling force apparatus according to claim 8, wherein the differential mechanism comprises a first rotating member (44) fixedly connected to the two output ends of the biaxial motor (41), and a first rotating member (44) located on the two first rotating members The second rotating member (45) between (44); the bevel gear on the second rotating member (45) meshes with the bevel gears on the two first rotating members (44) at the same time; the second rotating member (45) ) in total, two second rotating parts (45) are respectively located on opposite sides of the motor casing (42); the motor casing (42) is fixedly connected to the mounting member (46), and the second rotating member (45) The first rotating shaft (47) is rotatably connected to the mounting member (46); the first rotating shaft (47) is fixedly connected to the bobbin (48); 41) on the output; and

   The tensioning device further comprises a mounting seat (49), two supporting members (410) fixed on the mounting seat (49), the biaxial motor (41) is located between the two supporting members (410), and the dual-axis motor (41) is located between the two supporting members (410). The two output ends of the shaft motor (41) are respectively rotatably connected to the two support members (410); the mounting seat (49) is provided with a plurality of mounting holes (411).
10. A tensile apparatus according to claim 7, wherein one end of the support arm assembly (412) is connected with an adjustment assembly, the adjustment assembly includes a shifting mechanism and a positioning mechanism, and the shifting mechanism is used for adjusting the angle of the support arm assembly (412) relative to the adjustment assembly, and the positioning mechanism is used to position the support arm assembly (412) on the adjustment assembly;

    The adjustment assembly includes two static rings (413) facing each other, a floating ring (414) slidably sleeved outside each static ring (413) in the axial direction, and the outer side of the static ring (413) is fixedly connected to a limit. A positioning member (415) is provided, and a first elastic member (416) is arranged between the limiting member (415) and the corresponding floating ring (414), and the first elastic member (416) exerts mutual force on the two floating rings (414). The force of approaching; one end and two sides of the arm assembly (412) are respectively engaged with the two floating rings (414); the shifting mechanism is used to keep the two floating rings (414) away from each other;

    The positioning mechanism comprises a positioning ring (417) located at one end of the support arm assembly (412), and a plurality of annularly distributed first meshing teeth (418) located at the end face of the floating ring (414); the positioning ring (417) is movable It is sleeved outside the two static rings (413) and located between the two floating rings (414). 419) and the first meshing teeth (418) can engage with each other; the support arm assembly (412) includes a first pipe body (4121), a second pipe body (4122), and a third pipe body (4133) connected in sequence , the positioning ring (417) is located on the third pipe body (4133), and the interior of the positioning ring (417) communicates with the third pipe body (4133); the positioning ring (417) is provided with a wire opening (420) ;

    The shifting mechanism comprises an adjusting rod (421) located outside the adjusting assembly, a pushing portion (422) fixed on the floating ring (414), and being in contact with the pushing portion (422) and located on the floating ring (414) A cam (423) in an axially inner direction, a transmission mechanism for linking the adjustment rod (421) and the two cams (423); the transmission mechanism is driven by the adjustment rod (421) to move, and drives the two cams (423). a cam (423) to rotate; and

    A number of tension wheels (437) are also connected between the two static rings (413); a number of chutes (432) are uniformly distributed on the outer wall of the static ring (413), and a number of sliders are uniformly distributed on the inner wall of the floating ring (414). (433), the floating ring (414) and the static ring (413) are slidably matched with the sliding groove (432) through the mutually matching sliders (433); the outer end surface of the static ring (413) is annularly distributed with a plurality of gaps ( 436), the surface of the limiting member (415) is provided with a groove (434) matching the outer end surface of the static ring (413), and the groove (434) is provided with a number of grooves (434) at the bottom to match the gap (436). the protrusion (435); the outer end face of the static ring (413) is inserted into the notch (436), and the protrusion (435) enters the corresponding notch (436).
11. A pulling force apparatus according to claim 1, further comprising a support arm structure, the support arm structure comprising at least one slot (11) provided on the adjustment seat (10); A positioning block (12) coupled to the slot (11); the adjusting seat (10) is rotatably connected with the end head (9), and the positioning block (12) can be controlled to enter and exit the slot (11) ), when the positioning block (12) enters the slot (11), the end head (9) and the adjusting seat (10) are locked in position, and when the positioning block (12) is pulled out of the slot (11), the end head (9) It can be rotated around the adjusting seat (10).
12. The tensioning device according to claim 11, wherein the elastic member (3) comprises two bar-shaped members (301), and the two bar-shaped members (301) are fixedly connected by two connecting members (302), And the two connecting pieces (302) divide the area between the two strip pieces (301) into a first mounting portion (303), a second mounting portion (304), and a third mounting portion (305) in turn. The rollers (4) are arranged on the first mounting portion (303) and the third mounting portion (305), and the rigid member (2) passes through the second mounting portion (304).
13. A tensile apparatus according to claim 12, wherein,

    A limit mechanism is provided on the rigid piece (2), and the limit mechanism is used to limit the sliding of the elastic piece (3) on the rigid piece (2);

    The limiting mechanism comprises a first limiting rod (6) and a second limiting rod (7) penetrating the rigid piece (2), and two strip-shaped pieces (301) on each elastic piece (3) are located between the first limit rod (6) and the second limit rod (7);

    The elastic component is located in the track (8);

    The track (8) is arc-shaped, and protrusions (801) are provided on both sides of the inner wall of the track (8).
14. A tensile apparatus according to claim 1, further comprising a support arm position acquisition system, the support arm position acquisition system comprising:

    The first detection unit is used to detect the rotation angle of the track around its own axis;

    The second detection unit is used to detect the position of the support arm translation along the track;

    The third detection unit is used to detect the rotation angle of the support arm around the intersection point of the support arm and the track;

    The upper computer is signal-connected with the first detection unit, the second detection unit and the third detection unit.
15. The tension apparatus according to claim 14, wherein the first detection unit comprises a photoelectric sensor or an angle sensor;

    The second detection unit includes a plurality of sensing devices located on the track, and a generating device located at the translation end of the support arm along the track, and the sensing device can sense the generating device;

    The induction device is a Hall element, and the generating device is a permanent magnet block;

    A plurality of pin holes are arranged on the track along the axial direction, and an induction device is arranged in each pin hole; and

    The third detection unit includes an acceleration measurement module, which is used to measure the acceleration of the support arm in the X-axis and Y-axis directions; the Y-axis is parallel to the support-arm axis, and the X-axis is perpendicular to the Y-axis.
16. The tension apparatus according to claim 1, wherein the first adjusting assembly comprises a fifth rotating shaft (31) fixedly connected with the rail (8), and the fifth rotating shaft (31) is fixedly sleeved The toothed disc (29), further comprising a toothed member (30) for matching with the toothed disc (29), the toothed member (30) being driven by a driving device to engage with the toothed disc (29) and break away.
17. A tensile apparatus according to claim 1, wherein the second adjustment assembly comprises a plurality of pin holes (23) axially arranged on the track (8), and a positioning unit connected with the adjustment seat (10) A pin (24), the positioning pin (24) can be inserted into the pin hole (23); and a handle (25) for controlling the positioning pin (24) to enter and exit the pin hole (23).
18. The tension apparatus according to claim 17, further comprising a C-shaped piece (26) rotatably connected to the adjusting seat (10), the handle (25) is fixedly connected with the C-shaped piece (26), so The positioning pin (24) is detachably connected to the C-shaped piece (26); the C-shaped piece (26) and the adjustment seat (10) are rotatably connected through a fourth rotating shaft (22); the handle (25) ) and the C-shaped piece (26) are connected by bolts; a hook (251) is provided on the handle (25), and a first threaded hole (252) is provided on the hook (251); the C A positioning groove (261) matching the hook portion (251) is provided on the profile (26), and a second threaded hole (262) is provided in the positioning groove (261); the first threaded hole (252) ) and the second threaded hole (262) are matched with each other, and when the hook portion (251) hooks the positioning groove (261), the first threaded hole (252) faces the second threaded hole (262).
19. The tension apparatus according to claim 1, wherein the third adjustment assembly comprises a plurality of slots (11) arranged on the adjustment seat (10) and distributed annularly along the rotation direction of the end head (9). A positioning block (12) matching the slot (11) is provided on the end head (9), and the positioning block (12) can enter and exit the slot (11).
20. A tensile force apparatus according to claim 19, wherein opposite sides of the adjusting seat (10) are provided with a plurality of annularly distributed slots (11), and the end head (9) includes two positioning blocks ( 12), the two positioning blocks (12) correspond to the slots (11) on both sides of the adjustment seat (10) respectively; the end head (9) and the adjustment seat (10) are rotatably connected through the third shaft (13).

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