TWI809915B - Flywheel driving nailing device of electric nail gun - Google Patents

Abstract

The present invention provides a flywheel-driven nailing device for an electric nail gun, which is aimed at an electric nail gun equipped with an electromagnetic driver and a movable flywheel, so that the flywheel can be driven by applying a thrust force and a dynamic friction force generated by the thrust force When the firing pin moves down to strike the nail, one of the free rollers in the gun body can increase the reaction force applied to the firing pin with a spring-loaded movable pressurizing means, so as to increase the thrust and further increase the flywheel Drive the striker down to drive the dynamic friction force of the nail, and according to this, the existing electric nail can be improved without increasing the power of the electromagnetic driver and the rotational kinetic energy of the flywheel, or without increasing the volume and weight of the nail gun. The problem that the firing force of the firing pin of the gun is restrained.

Description

Flywheel driving nailing device of electric nail gun

The present invention relates to an electric nail gun, in particular to a firing pin in the nail gun, and a flywheel driving nailing device in which a flywheel and a free roller are respectively arranged on two opposite surfaces of the firing pin.

Patents TWI340075, TWI349601, and TWI404604 are the pioneers of the technology disclosed in the present invention. In particular, the present invention proposes improvements to these patents and structures related to these patents in the prior art.

The structure particularly related to the present invention can be seen in the striker for driving nails disclosed in the aforementioned patents, and a movable flywheel and a free roller respectively arranged on two opposite surfaces of the striker; among them, Nos. I340075, I349601 No. 1 teaches that the flywheel is pivoted on a swing arm, and the No. I404604 patent teaches that the flywheel is arranged on a guide seat, and the swing arm and the guide seat can be respectively driven by an electromagnetic driver to drive the flywheel to The direction of the striker moves so that the flywheel can exert a thrust against the striker, and a reaction force to this thrust is generated by a free roller positioned against the striker at the opposite end of the thrust, so that the rotational kinetic energy of the flywheel can be driven by rolling The way of friction drives the striker down to drive the nail.

It is also known that when the hardness of the work object to be nailed is harder, or the specification of the nail is larger or longer, and the depth of the work object must be implanted deeper, the effect of the striker moving down the nail The force must be greater. However, in order to increase the force of the striker moving down and driving the nail, the means and problems used in the prior art include:

1. Increase the length of the force arm when the swing arm is carrying the flywheel, or increase the radius of the flywheel to increase the lever effect and increase the thrust of the flywheel relative to the striker, thereby increasing the force of the striker to move down and strike the nail But, in this way, the space for configuring the swing arm or the flywheel on the gun body must be increased, resulting in the problem that the nail gun is too large and the nail gun is too heavy.

2. Increase the power of the motor to increase the rotational kinetic energy of the flywheel, and then increase the dynamic friction force and driving force of the flywheel to drive the firing pin down and strike the nail; however, in this way, the force used to drive the flywheel The volume of the motor is bound to increase, and the space for the motor and the flywheel in the gun body must be increased relatively, so it is still easy to cause the problems of the aforementioned nail gun being too large and heavy.

3. Select an electromagnetic driver with a larger output power to increase the force it exerts on the swing arm, so that the thrust of the flywheel relative to the striker is increased, thereby improving the dynamic friction force of the striker moving down and driving the nail. However, the electromagnetic driver must increase the number of coil windings to increase the output power. In this way, the volume of the electromagnetic driver is bound to increase, which will cause a burden on the space for the gun body, so it is still easy to produce the above-mentioned nail gun. And the nail gun is too heavy.

The above-mentioned problems have already touched the trend of miniaturization and lightweight design of nail guns, and have had a negative impact on the nailing operation performed by users with hand-held nail guns, so they need to be improved urgently.

In view of this, the present invention focuses on the design considerations of a miniaturized and lightweight electric nail gun, and further seeks a forward-looking technology that can increase the force of the striker moving down and driving the nail without increasing the volume and weight of the nail gun.

The inventor knows well that the electric nail gun with a flywheel relies on the thrust generated when the flywheel pushes the striker, so that the flywheel with accumulated rotational kinetic energy can drive the striker down to strike the nail by means of dynamic friction, and when the dynamic friction The greater the force, the greater the force of the striker moving down; therefore, if the flywheel and the striker have a predetermined friction coefficient on the contact surface, if the thrust applied by the flywheel to the striker can be increased, the flywheel can drive the striker further. Downward kinetic friction and nailing force. The inventor also knows that when the flywheel exerts a thrust on the firing pin, the free roller arranged at the opposite end of the flywheel exerting thrust on the firing pin will feed back a reaction force pushing the firing pin back, and the sum of the reaction force and the thrust is equal to zero.

For this reason, the present inventor paid technical labor and developed a flywheel-driven nailing device for an electric nail gun, which improves the use of an electromagnetic driver to drive the swing arm or guide seat to move in patents TWI340075, TWI349601, and TWI404604. The relative configuration method, and improve the configuration of the free roller on the opposite end of the flywheel to apply thrust to the striker, so that when the flywheel exerts thrust to engage the striker, it can increase the reaction force of the free roller to push the striker in reverse feedback, and then increase the flywheel. The thrust of the firing pin can improve the dynamic friction force and the driving force of the nail when the flywheel drives the firing pin down.

In a preferred embodiment, the flywheel-driven nail driving device is configured in a gun body of the nail gun, including a striker, a bearing, an electromagnetic driver, a rod, and a spring-loaded Free roller; wherein: the striker is in the shape of a straight rod and slides in the gun body in a manner of carrying a restoring force, the striker includes a first surface formed, and a pair of parallel shafts located at the opposite end of the first surface and parallel to each other The second surface: the bearing is disposed in the gun body in a movable manner with a spring loaded, and a force receiving part and a force applying part are formed at intervals, and the flywheel is pivotally connected to the force applying part in a manner carrying rotational kinetic energy ; The electromagnetic driver is fixed in the gun body and is used to drive and connect a rod to perform reciprocating motion. A slope is formed at one end of the rod, and the electromagnetic driver can drive the rod to push and touch the stressed rod through the slope part, so that the bearing can drive the flywheel to roll and press the first surface in the above-mentioned moving manner, and the flywheel exerts a thrust and a dynamic friction force generated by the thrust to act on the first surface to drive the striker down Pushing and retracting movement of the hammer; the free roller system is arranged in the gun body in a movable manner with a spring loaded with at least one elastic element, and exerts a reaction force equal to the thrust to press the second surface; wherein, The second surface is extended to form a slope, and a third surface formed by extending the slope and parallel to the second surface; when the striker moves down to strike the nail, the free roller is pressed sequentially by the second surface Touching the inclined plane and the third surface drives at least one of the elastic elements to be compressed rapidly to generate an elastic feedback force that can increase the reaction force, and the elastic feedback force acts on the inclined plane and the third surface through the free roller , used to increase the thrust acting on the first surface, and then increase the dynamic friction force driving the striker to move downward.

In a further implementation, the striker moves down the nail along a nail axis, the direction in which the thrust force is applied to the first surface, and the direction in which the reaction force and the elastic feedback force are applied to the second surface and the third surface , are perpendicular to the nailing axis. In addition, the free roller can be arranged in the gun body in a movable manner perpendicular to the nailing axis.

In a further implementation, the thrust force is applied to the first surface, and the reaction force, the elastic feedback force is applied to the second surface, and the action point of the third surface is located on the same horizontal line, and the horizontal line is vertical on the hammer axis. In a further implementation, the maximum width between the third surface and the first surface is greater than that between the second surface and the first surface The maximum width of the inclined surface is inclined along the rolling direction of the free roller. In addition, the slope presents an arc-shaped profile.

In a further implementation, the reciprocating movement performed by the rod includes a pushing action and a retracting action along a linear trajectory, and when the rod performs the retracting action, the slope pushes against the force-receiving portion, And when the rod member executes the pushing action, the slope releases the force-receiving part. In a further implementation, the force application portion presents an arc profile, and the slope presents an inclined surface capable of pushing against the arc profile. In a further implementation, the rod further includes an abutment surface formed by the extension of the slope, and when the rod performs the retraction action, the abutment provides contact with the force-receiving part to brake the bearing .

In a further implementation, the electromagnetic driver has a drive shaft, and a spring capable of driving the rod to return is arranged between the drive shaft and the rod.

In a further implementation, the supporting member is a swing arm capable of swinging and moving toward the first surface. In a further implementation, the swing arm also includes a pivot joint, the swing arm is pivotally arranged in the gun body through the pivot joint, and a first force arm is formed between the force-receiving part and the pivot joint. length, and a second moment arm length is formed between the force application part and the pivot joint.

In the implementation of matching the swing arm, the rod member can also be made into a fork shape extending from a joint end to form two push parts, the joint end provides the transmission connection of the electromagnetic driver, the slope and the abutment surface formed on the push portion. Further, the gun body includes a firing pin seat and a flywheel seat, the firing pin seat provides the firing pin slide group, the flywheel seat provides the swing arm pivoting to carry the flywheel, and the flywheel seat extends from the firing pin seat one side. In addition, one end of the striker seat is provided with a compression spring capable of providing spring pressure for the swing arm.

In a further implementation, the moving manner of the bearing is sliding.

In a further implementation, the gun body includes a roller housing box, a roller seat is movably assembled in the roller housing box, the free roller is pivoted on the roller seat via a roller shaft, and the opposite side of the roller housing box The two ends of the roller shaft are respectively formed with a travel hole, and the two ends of the roller shaft are respectively straddled in the two travel holes in a sliding group, and at least one of the elastic elements is arranged on the roller seat and the roller in a spring-loaded manner. between the storage boxes.

In a further implementation, the gun body includes a firing pin seat for the firing pin slide group, and the roller accommodating box is extended and formed on the other side of the firing pin seat.

According to the above-mentioned implementation content, the present invention can rely on the slope of the rod, the first surface, the second surface, the slope, the third surface of the striker and the elastically collapsible free nail gun without increasing the volume and weight of the nail gun. The relative configuration feature of the rollers enables the flywheel to further increase the thrust of the flywheel acting on the striker under the condition of outputting predetermined rotational kinetic energy, and further increase the dynamic friction force of the flywheel to drive the striker to move down and strike the nail.

The above specific content related to the implementation of the present invention will be further described below with the accompanying drawings.

10: Flywheel drive nailing device

20: striker seat

21: flywheel seat

22: Roller storage box

23:Roller seat

24: stroke hole

25: guide post

30: striker

31: first surface

32: second surface

33: third surface

34: Bevel

35: Guide post seat

40: bearing

41: pivot joint

42: Receiving part

43: force department

44: Compression spring

50: Electromagnetic driver

51: drive shaft

60: Rod

61: Spring

62: slope

63: abutment surface

70: Free Roller

71: elastic element

72: roller shaft

80: flywheel

90: nail pieces

91: work object

F1: Resilience

F2: Shrink force

F3: Thrust

F4: reaction force

F4': elastic feedback force

F5: dynamic friction

L: nailing axis

L1: Length of the first moment arm

L2: the length of the second moment arm

M: Moment

W1, W2: maximum width

FIG. 1 is a schematic perspective view of a preferred embodiment of the present invention, revealing a flywheel driving nailing device that can be installed in an electric nail gun.

Fig. 2 is a three-dimensional schematic view of the gun body shown in Fig. 1 removed, further revealing the components of the driving nail driving device in the gun body.

Fig. 3 is a sectional view of Fig. 2, revealing the relative configuration features of the constituent elements of the driving nailing device.

Fig. 4 is a cross-sectional view of section A-A in Fig. 3, further revealing the relative configuration features of the constituent elements of the driving nailing device.

Fig. 5 is a partially enlarged sectional view of Fig. 3, revealing the relative configuration features among the flywheel, striker and free roller.

Figures 6 to 8 are schematic diagrams of the action of the present invention, which sequentially reveal that the flywheel provides thrust to press the striker, so that the free roller first exerts a reaction force on the striker, and then applies an elastic feedback force that can increase the reaction force, so that the accumulated rotational kinetic energy The flywheel drives the striker to move down and strike the nail.

Please match Figures 1 to 4, wherein Figure 1 discloses that the flywheel-driven nail driving device 10 of the present invention is installed in a gun body of an electric nail gun; Gun housing (not shown) is fixed into a firing pin seat 20 for explanation, makes this firing pin seat 20 become It is a part of the gun body and included by the gun body, and can be used as a fixed end for installing the necessary components of the flywheel driving nailing device 10 . In addition, the original intention of the gun body also includes the gun casing other than the firing pin seat 20 and other components that can be fixed integrally with the gun casing. In other words, the installation location of the flywheel-driven nail driving device 10 of the present invention is not limited to the striker seat 20; in essence, as long as it is attached to the gun body of the electric nail gun, or a part of the gun body, or can be fixed with the gun body Other components that are integrated, and those who can be used to install the flywheel type driving nailing device 10, all should belong to the original intention of this gun body.

Fig. 2 further reveals that the necessary components of the flywheel-driven nailing device 10 include a striker 30, a movable bearing 40 pivotally connected to the flywheel 80, an electromagnetic driver 50, a rod 60 and a spring loaded Freewheel 70.

Wherein, the movable mode of the bearing 40 should at least be supported by the swing arm-related configuration technology disclosed in the aforementioned TWI340075 and TWI349601 patents, the support of the guide seat related configuration technology disclosed in the TWI404604 patent, and the support of the present invention The following implementations and drawings disclose the support of related configuration technologies of the swing arm. In other words, regarding the general scope of the movable mode of the bearing 40, in addition to citing the disclosed embodiments and drawings of the present invention for explanation, it should also include at least the aforementioned patents TWI340075, TWI349601, and TWI404604, which are first described .

Please match Figure 2 and Figure 3 to further disclose: the firing pin 30 is in the shape of a straight rod and can be slid in the firing pin seat 20 which is regarded as the gun body; one of the preferred implementations of the sliding assembly is to use the firing pin The guide post seat 35 formed on both sides near the top of 30 enables the double-sided guide post 25 that can be slipped and placed in the striker seat 20 to be fixed. Furthermore, the firing pin 30 is slid in the firing pin seat 20 which is regarded as the gun body in a manner of carrying a restoring force F1 (shown in FIG. 3 ). In FIG. 3 , only a simple spring is used to represent the restoring force F1 acting on the striker; however, in practice, the striker 30 can carry the restoring force F1 in various ways, including those disclosed in the aforementioned Taiwan Patent No. I349601 The spring pressure provided by a helical tension spring is applied to the striker 30 as the restoring force F1, or a steel cable pulled by the self-loaded rotational kinetic energy of the flywheel 80 is used as the restoring force F1 to be connected to the striker 30 Therefore, as long as it is the restoring force F1 that can drive the firing pin 30 to move up and reset after the firing pin 30 moves down, it should belong to it; in other words, the firing pin 30 is loaded with the The way of restoring force F1 belongs to the known technology and is applied in the present invention, but it is not the technical focus of the present invention.

The striker 30 includes a first surface 31 formed, and a second surface 32 located at the opposite end of the first surface 31 and parallel to each other; A third surface 33 is formed and parallel to the second surface 32 . Furthermore, the striker 30 can move down along a nailing axis L to drive the nail, and the first surface 31 , the second surface 32 and the third surface 33 are all arranged in parallel along the nailing axis L. Wherein, it can be ascertained from Fig. 4 that the profile of the first surface 31 can be made into a shape that can accept the wheel surface of the flywheel 80 to engage and roll and press, and the profile of the second surface 32 and the slope 34 can be made to accept the profile of the flywheel 80. The wheel surfaces of the free roller 70 are in the form of meshing and rolling pressing contact. Furthermore, please further refer to FIG. 5 , illustrating that the maximum width W1 between the third surface 33 and the first surface 31 is greater than the maximum width W2 between the second surface 32 and the first surface 31, so that the The inclined surface 34 is inclined along the rolling direction (details will be described later) of the free roller 70 .

As shown in Figures 1 to 4, a swing arm is disclosed as the bearing 40, so that the bearing 40 can be pivoted in the above-mentioned gun body in a movable manner loaded with spring pressure. Therefore, in a specific implementation, one side of the striker seat 20 can be extended to form or be fixedly combined with a flywheel seat 21, so that the flywheel seat 21 becomes a part of the gun body and is contained by the gun body. In addition, the bearing member 40 is formed with a pivot portion 41, so that the bearing member 40 can be pivotally mounted on the gun, which is considered to be a gun, by means of an equivalent method such as a pivot through the pivot hole through the pivot portion 41. In the said flywheel seat 21 of body or gun body part.

Furthermore, as shown in Figure 3, a force-receiving part 42 and a force-applying part 43 that can generate a lever effect are formed at intervals on the bearing 40; the force-applying part 43 can be made into a pivot hole shape, and the flywheel 80 It can be pivotally connected to the force-applying portion 43 in a manner of carrying rotational kinetic energy, so that the flywheel seat 21 can be used to carry the bearing 40 and the flywheel 80 on the bearing 40 . Wherein, the force-receiving portion 42 can be presented as an arc surface, and the arc surface is distributed in the radial direction of the equicircumference of the force-applying portion 43 in the form of a pivot hole. Also, one end of the striker seat 20 is provided with a compression spring 44 that can provide the swing arm 40 with a spring pressure. In this way, the bearing 40 in the form of the swing arm can be loaded with the spring pressure of the compression spring 44. The way is pivoted in the gun body.

The manner in which the flywheel 80 is loaded with rotational kinetic energy can be implemented by an electric motor (not shown) arranged coaxially with the flywheel 80 to provide rotational driving force, or driven by an electric motor (not shown) arranged non-coaxially beside the flywheel 80 The belt or toothed disc, and then the driving flywheel 80 to generate rotational kinetic energy, all belong to the known technology and are applied in the present invention, but are not the technical focus of the present invention.

In addition, the electromagnetic driver 50 can be made of an electromagnet that can be connected to an external power source to generate a magnetic field effect, and the electromagnetic driver 50 can be fastened in the above-mentioned gun body to drive and connect the rod 60 to perform a reciprocating push-and-retract movement. The said reciprocating motion should include the reciprocating motion of the linear track and the cycloid track in the scope of practical application. However, in this implementation, the reciprocating motion of the linear track is taken as an example to illustrate that the rod 60 can follow the linear track. Carry out a reciprocating pushing and contracting movement, especially including a pushing action and a retracting action; specifically, as shown in Figure 2 and Figure 3, it is disclosed that the electromagnetic driver 50 has a drive shaft 51, and the electromagnetic driver 50 can drive The drive shaft 51 performs a reciprocating push-and-retract motion along a straight track direction parallel to the nailing axis L; furthermore, the rod 60 can be made into a fork-shaped shape extending from a joint end to form two push parts. Between the electromagnetic driver 50 and the rod 60 is disposed a spring pushing and contracting movement capable of driving the rod 60 to reset.

In addition, as shown in Figures 3 and 4, it is also disclosed that one end of the rod 60, especially the positions of the two push parts respectively form a slope 62; specifically, when the force-receiving part 42 is implemented as an arc profile, the The slope 62 can be made into an inclined surface capable of pushing against the contour of the arc surface, so that the electromagnetic driver 50 can drive the rod 60, and then push the force receiving portion 42 through the slope 62 to drive the bearing 40 Swivel towards the direction of the first surface 31 . Moreover, the two push portions of the rod 60 also include an abutment surface 63 formed by extending each of the slopes 62; in one implementation, the abutment surface 63 can be along a When the rod 60 does not drive the bearing 40 to swing toward the first surface 31 through the slope 62, the abutment surface 63 can provide the contact and abutment of the force-receiving part 42 to brake the load spring Pressed bearing 40. Wherein the bar 60 is made into a fork shape, which is helpful for reducing the configuration space of the gun body.

Also, the free roller 70 is configured in the above-mentioned gun body in a movably spring-loaded manner with at least one elastic element 71 attached. For this reason, in the implementation shown in Fig. 2 to Fig. 5, two helical compression springs are used as the elastic element as an example to illustrate that the other side of the striker seat 20 is extended or fixed. Fixedly combine a roller housing box 22, and make this roller housing box 22 become a part of this gun body, and be included by this gun body, so that a roller seat 23 is movably assembled in this roller housing box 22, the free The roller 70 can be pivotally installed and slide grouped on the roller seat 23 through the assembly of a roller shaft 72, and the walls of the opposite ends of the roller housing box 22 are respectively formed with a stroke hole 24, and the two ends of the roller shaft 72 are respectively used for sliding The set way straddles the two travel holes 24 , and allows the two elastic elements 71 to be press-fitted between the roller seat 23 and the roller accommodation box 22 .

According to the configuration description of the above-mentioned necessary components, please refer to Fig. 3 again, which reveals that the flywheel 80 has not driven the striker 30 to move the nail. The user can first start the power supply of the electric nail gun (not shown), drive the electric motor to rotate Drive the flywheel 80 to rotate; at this time, the electromagnetic driver 50 has not yet driven the rod 60 to move, so the slope 62 has not exerted force to push the force-receiving part 42 to make the bearing 40 swing, so the wheel surface of the flywheel 80 has not contacted the first part of the striker 30. One surface 31, so the flywheel 80 remains in the state of idling and accumulating rotational kinetic energy; on the other hand, the wheel surface of the free roller 70 has been loaded with at least one part of the spring pressure of the elastic element 71, and then pressed against the second part of the striker 30. Surface 32.

Next, please continue to refer to FIG. 6 to FIG. 8, which continue to reveal the details of the driving nailing process of the present invention; wherein: FIG. 6 reveals that when the user presses the trigger (not shown) of the electric nail gun, the electromagnetic driver 50 can be activated, It is used to drive the rod 60 to perform a retraction action towards the direction of the electromagnetic driver 50 (that is, upward direction) in a manner loaded with a spring 61 spring pressure, so that the slope 62 can apply a contraction force F2 to push the force-receiving part 42, Then, the supporting member 40 is swung toward the first surface 31 , and drives the wheel surface of the rotating flywheel 80 to apply a thrust F3 toward the first surface 31 of the striker 30 . And according to the principle of mechanics, the retraction force F2 can generate the moment M shown in Figure 6 through the action of the first moment arm length L1 shown in Figure 3, and the moment M can provide the second moment arm length L2 to convert into the Thrust F3, so when the moment M is bigger, the thrust F3 is bigger. On the other hand, since the thrust F3 acting on the first surface 31 will be transmitted to the elastically collapsible free roller 70 via the second surface 32, the free roller 70 will be affected by the thrust F3 and at least one of the The elastic element 71 exerts pressure, and by virtue of the stored spring pressure of at least one of the elastic elements 71, the force of the free roller 70 pressing against the second surface 32 is increased, so that at least one of the elastic elements 71 can drive the free roller 70 to apply a reaction force equal to the thrust F3 F4 presses against the second surface 32; in other words, thrust F3=reaction force F4, therefore, the greater the thrust F3 is, the greater the reaction force F4 is.

It can be seen from Fig. 6 that the thrust F3 is substantially the positive force generated by the point of action of the wheel surface of the flywheel 80 pressing against the first surface 31, so the thrust F3 continues to press against the first surface 31 and the first surface When the friction coefficient of 31 is specific, the rotational kinetic energy accumulated by the flywheel 80 acts on the first surface 31 to generate a dynamic friction force F5 in the tangential direction of the flywheel; when the thrust F3 is larger, the dynamic friction force F5 is larger. This makes it possible to use the dynamic friction force F5 as the driving force for driving the striker 30 to lower and transplant the driving piece 90 .

Next, FIG. 7 reveals the process in which the dynamic friction force F5 drives the striker 30 to move downward along the nailing axis L, and the flywheel 80 continues to roll and press against the first surface 31 through the action of the thrust F3 and the dynamic friction force F5. , and the free roller 70 can roll and press the inclined surface 34 and the third surface 33 sequentially starting from the second surface 32 . For this reason, in a further implementation, the inclined surface 34 can be made into an arc-shaped profile, so that the free roller 70 can be smoothly guided to roll on the second surface 32 when the striker 30 moves down to drive the nail. to the slope 34 , and then rolls from the slope 34 to the third surface 33 . Furthermore, based on the relationship of the maximum width W1>maximum width W2 shown in FIG. 5, at least one of the elastic elements 71 is driven to be compressed rapidly to generate an elastic feedback force F4' that can increase the reaction force F4, so that the The elastic feedback force F4' acts on the slope 34 and the third surface 33 sequentially via the free roller 70. According to the principle of mechanics, the elastic feedback force F4'=thrust F3 with the reaction as the essence, so when the reaction force F4 passes through the slope 34 1. When the third surface 33 is converted into a larger elastic feedback force F4', it is bound to increase the thrust F3 acting on the first surface 31, thereby increasing the dynamic friction that drives the striker 30 to move down and strike the nail. Force F5.

In addition, FIG. 7 also reveals that the nail 90 is affected by the increased dynamic friction force F5 output by the striker 30 , and can rapidly strike into the workpiece 91 . Next, Fig. 8 reveals that the striker 30 is subjected to the continuous action of sufficient dynamic friction force F5 shown in Fig. 7, and the nailing piece 90 is continuously planted along the nailing axis L, and the nailing piece 90 can be embedded in the workpiece 91 to achieve the ideal The working depth can be improved to improve the nailing yield.

After the nail driving operation shown in FIG. 8 is completed, please refer back to FIG. 3 , the electromagnetic driver 50 is powered off, and the rod 60 is directed away from the electromagnetic driver 50 via the restoring force of the spring 61 (that is, in the downward direction) to perform a pushing action, so that the slope 62 releases the force receiving portion 42 and eliminates the retraction force F2 shown in FIG. The direction of the surface 31 is rotated to reset, and the abutment surface 63 is made to contact the force-receiving portion 42, thereby stopping the bearing 40, so as to complete the driving nailing procedure of the present invention.

According to the contents disclosed in the above-mentioned embodiments, when the swinging arm is used as the supporting member 40, the supporting member 40 can be replaced by, for example, the swinging seat in the aforementioned TWI340075 or TWI349601 patents; in addition, When the bearing 40 is configured in a moving manner other than swinging, the bearing 40 can also be replaced by, for example, a guide seat configured in a sliding manner as disclosed in Patent No. TWI404604; the above-mentioned replacement or other simple replacements are all subject to this The invention can increase the application field of driving friction force.

Moreover, the direction in which the thrust F3 is applied to the first surface 31, and the direction in which the reaction force F4 and the elastic feedback force F4' are applied to the second surface 32 and the third surface 33 can all be configured to be perpendicular to The driving axis L. In addition, the movable direction of the free roller 70 may be perpendicular to the driving axis L. As shown in FIG. Moreover, the action point of the thrust F3 applied to the first surface 31, and the action points of the reaction force F4 and the elastic feedback force F4' applied to the second surface 32 and the third surface 33 may be located on the same horizontal line , and the horizontal line is perpendicular to the nailing axis L. These implementation details will help to realize the purpose of the present invention that can increase the dynamic friction force of driving nails, and give a statement.

However, the above examples are only to express the preferred implementation modes of the present invention, but should not be construed as limiting the patent scope of the present invention. Therefore, the present invention should be based on the content of the claims defined in the scope of the patent application.

10: Flywheel drive nailing device

23:Roller seat

25: guide post

30: striker

35: Guide post seat

40: arm swing

41: pivot joint

42: Receiving part

43: force department

50: Electromagnetic driver

60: Rod

70: Free Roller

71: elastic element

72: roller shaft

80: flywheel

Claims (18)

A flywheel-driven nailing device for an electric nail gun, comprising: a striker, which is in the shape of a straight rod, and is slidably assembled in a gun body of the nail gun in a manner of carrying a restoring force, and the striker includes a first surface formed , and a second surface that is located at the opposite end of the first surface and is parallel to each other; a bearing member is configured in the gun body in a movable manner loaded with spring pressure, and a force receiving part and a force applying part are formed at intervals ; a flywheel pivotally connected to the force applying part in a manner of carrying rotational kinetic energy; an electromagnetic driver fixed in the gun body for transmission and connection with a rod to perform reciprocating push-retraction motion, and a slope is formed at one end of the rod , the electromagnetic driver can drive the rod, and then push the force-receiving part through the slope, and drive the bearing to drive the flywheel to roll and press the first surface in the above-mentioned moving manner, and the flywheel also exerts a thrust and is driven by the A dynamic friction force generated by the thrust acts on the first surface to drive the firing pin to move down and strike the nail; a free roller is configured in the gun body in a movable manner with a spring loaded with at least one elastic element, and exerts a force. The reaction force equal to the thrust presses against the second surface; wherein, the second surface extends to form a slope, and a third surface is formed by extending the slope and is parallel to the second surface; the firing pin moves downward to strike When nailing, the free roller rolls and presses the inclined surface and the third surface sequentially from the second surface, so that at least one of the elastic elements is pressed rapidly to generate an elastic feedback force that can increase the reaction force. The elastic feedback force acts on the slope and the third surface through the free roller to increase the thrust acting on the first surface, thereby increasing the dynamic friction force driving the striker to move down and strike the nail. The flywheel driving nail driving device of the electric nail gun according to claim 1, wherein the striker moves down along a nail driving axis to drive nails, the thrust is applied to the direction of the first surface, and the reaction force and the elastic feedback force The directions applied to the second surface and the third surface are both perpendicular to the driving axis. The flywheel-driven nail driving device of the electric nail gun according to claim 1, wherein the striker moves down along a nail driving axis to drive nails, and the free roller is arranged in the gun body in a movable manner perpendicular to the nail driving axis . The flywheel-driven nailing device of the electric nail gun according to claim 2 or 3, wherein the thrust is applied to the action point of the first surface, and the reaction force and the elastic feedback force are applied to the second surface, the second surface, and the second surface. The action points of the three surfaces are on the same horizontal line, and the horizontal line is perpendicular to the driving axis. The flywheel-driven nailing device of an electric nail gun according to claim 1, wherein the maximum width between the third surface and the first surface is greater than the maximum width between the second surface and the first surface, and The slope is inclined along the rolling direction of the free roller. The flywheel driving nailing device of the electric nail gun according to claim 5, wherein the inclined surface presents an arc-shaped profile. The flywheel-driven nailing device for an electric nail gun as claimed in claim 1, wherein the reciprocating motion performed by the rod includes a stretching action and a retracting action along a linear trajectory, and the rod performs the retraction When the retracting action makes the slope push against the force-receiving part, and when the rod performs the pushing-extending action, the slope releases the force-receiving part. According to claim 7, the flywheel driving nailing device of an electric nail gun, wherein the force applying portion presents an arc profile, and the slope presents an inclined surface capable of pushing against the arc profile. The flywheel-driven nailing device for an electric nail gun according to claim 7, wherein the rod further includes an abutment surface formed by the extension of the slope, and when the rod performs the retraction action, the abutment is formed by the abutment The part provides the contact of the force receiving part to brake the bearing. The flywheel driving nailing device of the electric nail gun as claimed in claim 1 or 7, wherein a spring capable of driving the rod to return is arranged between the electromagnetic driver and the rod. As claimed in any one of claims 1 to 10, the flywheel driving nailing device for an electric nail gun, wherein the bearing is a swing arm capable of swinging and moving toward the first surface. The flywheel driving nailing device of the electric nail gun as described in claim 11, wherein the swing arm further includes a pivot joint, and the swing arm is pivotally arranged in the gun body through the pivot joint. A first moment arm length is formed between the pivoting parts, and a second moment arm length is formed between the force applying part and the pivoting part. The flywheel type drive nailing device of the electric nail gun as described in claim 9, wherein the rod is made into a fork-shaped shape extending from a connecting end to form two push parts, and the connecting end provides the transmission connection of the electromagnetic driver, the Both the slope and the abutment surface are formed on the push portion. The flywheel-driven nail driving device of the electric nail gun as claimed in claim 11, wherein the gun body includes a striker seat and a flywheel seat, the striker seat provides the striker sliding group, and the flywheel seat provides the swing arm for pivoting The flywheel is carried, and the flywheel seat is extended and formed on one side of the striker seat. According to claim 14, the flywheel driving nailing device of the electric nail gun, wherein one end of the firing pin seat is provided with a compression spring capable of providing the swing arm with spring pressure. According to any one of claims 1 to 10, the flywheel-driven nailing device for an electric nail gun, wherein the movement of the bearing is sliding. A flywheel-driven nailing device for an electric nail gun as described in claim 1, wherein the gun body includes a roller housing box, and a roller seat is movably assembled in the roller housing box, and the free roller is pivoted through a roller shaft A travel hole is formed on the roller seat and the opposite end walls of the roller housing box respectively, and the double ends of the roller shaft are respectively straddled in the two travel holes in a sliding group, and at least one of the elastic elements is connected with The spring-loaded method is arranged between the roller base and the roller accommodation box. According to claim 17, the flywheel-driven nail driving device of the electric nail gun, wherein the gun body includes a firing pin seat for the firing pin slide group, and the roller housing is extended and formed on the other side of the firing pin seat.

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