TWM638511U - Force limiting and shock absorption device - Google Patents

Abstract

The present invention is a force-limiting and shock-absorbing device, which is provided with a main body, a knocking part, an elastic part and a strengthening part. The main body is provided with a joint part, and the joint part is provided with a set of holes. Combined with the main body so as to be movable relative to the joint part, the knocking part is provided with a set part, a knock part, a locking part and a protruding part, and the protruding part is arranged between the set part and the At the joint of the striking part, the elastic member is arranged on the casing part of the striking part and is located between the joint part of the body and the striking part of the striking part, the reinforcing part is arranged on the striking part and It is located between the elastic part and the knocking part of the knocking part and abuts against the raised part to provide a force-limiting shock-absorbing device that improves the structural strength, prolongs the service life and avoids deflection during the knocking process.

Description

force limiting shock absorber

The present invention relates to a force-limiting shock-absorbing device, in particular to a force-limiting shock-absorbing device which improves structural strength, prolongs service life and avoids deflection during knocking.

At present, the industry is used to strike the hammer or iron hammer that fixes the nail body in the wooden board, cement wall or metal plate. Its integrated head design makes the existing industrial hammer or iron hammer often lose The bouncing situation caused by the reaction force will not only shorten the contact time of the hammer or hammer's striking surface with the nail body, but also easily cause the nail body to bend or deflect, and the reaction force of its immediate rebound will be converted into Loss of heat and noise will relatively reduce the effectiveness of the user's force application, that is, the applied force cannot be fully used on the nail body, so that the user needs to hit the nail body multiple times , the nail body can be knocked into and fixed in the wooden board or wall, relatively increasing the number of knocks and the time required; in addition, when the user holds the handle of a hammer or hammer, because of the bouncing generated when knocking Vibration can also make users feel uncomfortable. Figure 21 shows the relationship between the force (Kgf) and time (S) of the existing hammer when a traditional existing hammer without shock-absorbing design is measured through a force gauge, from It can be seen from Fig. 21 that during a single strike of the existing iron hammer, the existing iron hammer of the rigid body will only have a wave of impact force F1, which is quite large, so it is easy to bounce and make the user's hand In addition, in Figure 21, a second wave of force will be measured after the first wave of impact force F1 appears, and the second wave of force is the power gauge due to the existing hammer The impact force F1 of the force gauge produces the rebound force B1 of the internal rebound of the gauge, which is not the impact force produced by the existing hammer.

In view of this, in order to avoid the above-mentioned problems caused by the integrated head design before use, the existing industrial hammer or hammer 90 will be placed on the rod body 92 at the middle of the head 91 as shown in Figure 20 An elastic member 93 is sheathed, and a shock-absorbing effect is provided through the elastic member 93. However, although the elastic member 93 can provide a shock-absorbing effect, the existing industrial hammer or hammer 90 in the knocking process, If when striking an object with greater strength, the reaction force applied by the object to the existing industrial hammer or hammer 90, and the elastic member will cause the bottom end of the head 91 to deflect due to the reaction. , so that the connection surface 94 of the head 91 and the rod body 92 needs to bear the torque formed by the stress. After a long time of use, the connection surface 94 is easy to be damaged, which will affect the existing industrial hammers or hammers. 90; further, the internal diameter of the elastic member 93 of the existing industrial hammer or iron hammer 90 is greater than the outer diameter of the body of rod 92, so that the inner surface of the elastic member 93 is not in contact with the outer surface of the body of rod 92 Therefore, during the knocking process, the elastic member 93 is easy to move the rod body 92 due to uneven lateral compression, causing the bottom end of the head 91 to be deflected, resulting in the formation of the connecting surface 94. The situation of fracture or damage fails to provide the effect of guiding and structural support of the rod body 92, and there is something to be improved.

Therefore, the creator of the present invention has developed a new model that can improve the existing defects through continuous research and testing in view of the defects and deficiencies in the structure and use of existing industrial hammers or iron hammers.

The main purpose of this new model is to provide a force-limiting shock absorber, which can disperse and absorb the stress and torque generated during the knocking process by improving the structural strength, not only avoiding the occurrence of torque caused by stress In the event of breakage or damage, the service life is effectively improved, and the structural relationship between the elastic member and the rod body can provide a guiding and structural support effect, thereby providing a structure that improves the strength, prolongs the service life, and avoids the impact caused by the knocking process. Force-limiting shock-absorbing device for deflection.

In order to achieve the above purpose, the present invention mainly provides a force-limiting shock-absorbing device, which includes: a body, the body is provided with a junction at one end, the junction is provided with a set of holes, and the body is far away from the junction One end is provided with a gripping part; a knocking part, which is movably combined with the body and can move relative to the joint part, and the knocking part is provided with a set part, a knocking part, a locking part and a protruding part, the sleeve part is movably combined with the sleeve hole of the joint part, the knocking part is set at one end of the sleeve part and is located below the joint part, the lock part and the joint part The sleeve part is combined and abuts against the joint part, and the protruding part is arranged at the junction of the sleeve part and the knocking part; an elastic part is arranged at the sleeve part of the knocking part and is located Between the joint part of the main body and the knocking part of the knocking part, it is used to remind the user whether the knocking force exceeds the force application range set by the force-limiting shock absorbing device when knocking; and a A reinforcing piece, the reinforcing piece is arranged on the knocking piece and is located between the elastic piece and the knocking part of the knocking piece and abuts against the raised part; wherein, through being arranged on the elastic piece and the knocking The reinforcement part between the parts, and the raised part formed between the sleeve part and the knocking part against the reinforcement part can avoid the elastic force generated by the elastic part during the knocking process. For the Stress concentration occurs at the junction of the sheathing part and the knocking part, resulting in damage and fracture.

Further, the aforementioned force-limiting and shock-absorbing device, wherein the protrusion is a ring-shaped structure.

Still further, the aforementioned force-limiting and shock-absorbing device, wherein the raised portion is a plurality of ring-shaped raised structures arranged at intervals.

Preferably, the aforementioned force-limiting shock absorbing device, wherein the raised portion has a thickness, the reinforcing member has a thickness, and the thickness of the reinforcing member is greater than the thickness of the raised portion.

Preferably, in the aforementioned force-limiting shock absorbing device, wherein the raised portion has a thickness, the reinforcing member has a thickness, and the thickness of the reinforcing member is equal to the thickness of the raised portion.

Preferably, the aforementioned force-limiting shock absorbing device, wherein the protrusion has a thickness, the reinforcement has a thickness, and the thickness of the reinforcement is smaller than the thickness of the protrusion.

Preferably, in the aforementioned force-limiting and shock-absorbing device, a curved surface is formed on one side of the raised portion facing the joint portion, and a contact surface is provided on the bottom surface of the reinforcement member facing the knocking portion, the The contact surface can completely contact with the curved surface of the protrusion.

Preferably, in the aforementioned force-limiting and shock-absorbing device, a curved surface is formed on one side of the raised portion facing the joint portion, and a contact surface is provided on the bottom surface of the reinforcement member facing the knocking portion, the The contact surface can be in contact with the curved surface portion of the protrusion.

Preferably, in the aforementioned force-limiting and shock-absorbing device, wherein the joint part is transversely provided with an accommodating space connected to the sleeve hole at the middle section, the locking part is located in the accommodating space and Combined with the sleeve part and abutted against the combined part of the body.

Preferably, the force limiting and shock absorbing device as mentioned above, wherein the joint portion forms an abutment surface on the end surface forming the sleeve hole, and the top end of the elastic member abuts against the abutment surface of the joint portion .

Preferably, the aforementioned force-limiting and shock-absorbing device, wherein the knocking member is provided with at least one nailing groove, and each of the nailing grooves is axially recessed and formed on the outer peripheral surface of the knocking part for A nail body is placed on the outer peripheral surface of the striking part.

Preferably, the force-limiting and shock-absorbing device as described above, wherein the knocking member is provided with a magnetic attraction on the inner side of each of the nail grooves, through which the nail body is adsorbed to the corresponding position. Nail ditch.

Preferably, the force limiting and shock absorbing device as mentioned above, wherein the at least one nail groove is axially penetrated through the top surface and the bottom surface of the knocking part of the knocking member, so that the head of the nail body can pass through The at least one nail groove abuts against the abutting surface.

Preferably, the force-limiting shock-absorbing device as mentioned above, wherein the force-limiting shock-absorbing device is provided with a limit structure, and the limit structure is provided with an accommodating groove, a limit groove and a limit piece, the The accommodating groove axially penetrates the joint part from the outside to the inside, and is recessed on the inner surface of the joint part and communicates with the sleeve hole. The limiting groove is recessed on the outer surface of the sleeve part and located In the hole, the limiting member is arranged between the accommodating groove and the limiting groove, so that the knocking member is restricted by the limiting structure and will not rotate relative to the body.

Preferably, the aforementioned force-limiting and shock-absorbing device, wherein the striking part is an ax blade.

Preferably, as in the aforementioned force-limiting and shock-absorbing device, wherein the gaps between the top, middle and bottom of the elastic member are the same, the force-limiting and shock-absorbing device is provided with an auxiliary part, which is sheathed on the The sleeve part is interposed between the joint part and the elastic part, and the auxiliary part is provided with a wedge-shaped block protruding from a side facing the elastic part, and the reinforcing part is provided with a wedge-shaped block protruding from the top surface facing the elastic part blocks, so that the elastic member can be stably arranged between the joint portion and the reinforcing member by abutting against the two wedge-shaped blocks.

Preferably, the aforementioned force-limiting shock-absorbing device, wherein at least one shock-absorbing element is provided on the holding portion, the length of the at least one shock-absorbing element is greater than half of the length of the holding portion, And less than or equal to the length of the grip.

Preferably, the aforementioned force-limiting shock-absorbing device, wherein the handle is provided with several shock-absorbing parts, the several shock-absorbing parts are sleeved on the handle and made of different materials become.

With the above-mentioned technical features, the new force-limiting shock-absorbing device can not only provide a mechanism for the reaction force to produce delayed rebound (Delayed Rebound) through the elastic member located between the joint part and the knocking part when in use. Shock-absorbing and shock-absorbing effects, and at the same time can increase the contact time between the knocking part and the nail body, not only makes the nail body less prone to bending, but also reduces energy loss and noise generation, and relatively reduces the number of knocks and the The time required can be reduced, and the discomfort of the user or patient can be alleviated, so that the user can firmly hold the body for knocking, and because the structure is simplified, it is only necessary to change the body with different elastic strengths. The elastic member or by rotating the locking part can provide different elastic tensions of the elastic member; furthermore, by setting the reinforcing member between the elastic member and the knocking part, and between the sleeve part and the knocking part The method of forming the raised part between the striking parts can prevent the elastic force generated by the elastic member during the striking process from directly producing stress concentration on the junction of the sleeve part and the striking part, resulting in damage and fracture; Furthermore, by matching the inner diameter of the elastic member with the outer diameter of the sleeve portion, the elastic member can provide a guiding and supporting effect for the sleeve portion, thereby providing a structure that improves strength, improves service life and Force-limiting shock-absorbing device to avoid deflection during knocking.

10: Ontology

11,11E,11F: Junction

111: sleeve hole

112:Accommodating space

113: Nail pulling structure

114: abutment surface

12, 12G, 12H: Grip

121, 121G, 121H: Shock absorbing parts

20,20C,20D,20: knocking parts

21,21F: Set up department

22: Percussion Department

23: Locking part

24: Raised part

25C: nail groove

26C:Magnetic parts

30,30F: Elastic parts

40,40A,40B,40F: reinforcement

41: perforation

42: contact surface

43F: wedge block

50F: Auxiliary parts

51F: wedge block

60E: limit structure

61E: capacity slot

62E: limit slot

63E: Limiting parts

70: nail body

80: planks

90: Hammer

91: head

92: rod body

93: Elastic parts

94: connection surface

T1, T2: Thickness

G, G1, G2: Gap

F1: impact force

F2: strain force

F3: elastic force

B1: echo force

L1, L2: Length

Fig. 1 is a three-dimensional appearance view of the first preferred embodiment of the present invention.

Fig. 2 is a partially enlarged three-dimensional exploded view of the first preferred embodiment of the present invention.

Fig. 3 is a partially enlarged sectional side view of the first preferred embodiment of the present invention.

Figures 4 to 6 are side views of the first preferred embodiment of the present invention for knocking on a nail body.

Fig. 7 is a partially enlarged sectional side view of the second preferred embodiment of the present invention.

Fig. 8 is a partially enlarged sectional side view of the third preferred embodiment of the present invention.

Fig. 9 is a partially enlarged sectional side view of the fourth preferred embodiment of the present invention.

Fig. 10 is a partially enlarged sectional side view of the fifth preferred embodiment of the present invention.

Fig. 11 is a partially enlarged sectional side view of the sixth preferred embodiment of the present invention.

Fig. 12 is a perspective view of a seventh preferred embodiment of the present invention.

Fig. 13 is a partially enlarged three-dimensional exploded view of the seventh preferred embodiment of the present invention.

Fig. 14 is another partially enlarged perspective exploded view of the seventh preferred embodiment of the present invention.

Fig. 15 is a partially enlarged side view of the seventh preferred embodiment of the present invention.

Fig. 16 is a partially enlarged sectional side view of the seventh preferred embodiment of the present invention.

Fig. 17 is a side view of the eighth preferred embodiment of the present invention.

Fig. 18 is a side view of the ninth preferred embodiment of the present invention.

Fig. 19 is an operational side view of the ninth preferred embodiment of the present invention.

Fig. 20 is a schematic diagram of the operation of the existing industrial hammer when striking an object.

Fig. 21 is the relation table of power and time when existing iron hammer strikes.

Fig. 22 is the relationship table between force and time when knocking in the first preferred embodiment of the present invention.

In order to understand the technical features and practical functions of the present invention in detail and realize them according to the contents of the manual, the preferred embodiment shown in the figure is further described in detail as follows:

This new type is a force-limiting damping device, please refer to the first preferred embodiment shown in Fig. 30 and a reinforcement 40, wherein:

The main body 10 is a strip-shaped metal rod body. The main body 10 is provided with a joint portion 11 at one end, and a set of holes 111 is formed through the joint portion 11 on one end surface. Preferably, the joint portion 11 is located at An accommodating space 112 communicating with the sleeve hole 111 is transversely penetrating through the middle section, and a nail pulling structure 113 is formed on the other end surface of the joint portion 11 away from the sleeve hole 111, and the joint portion 11 is formed An abutment surface 114 is formed on the end surface of the sleeve hole 111; the body 10 is provided with a gripping portion 12 at an end away from the joint portion 11, allowing the user to swing the body 10 by holding the gripping portion 12 , the grip portion 12 is provided with a shock absorber 121, so that when the user holds the body 10 for knocking, a shock absorber effect can be provided through the shock absorber 121, and the shock absorber 121 can be a silicon rubber , rubber or thermoplastic soft rubber (Thermo-Plastic-Rubber material) made of the body.

The knocking part 20 is movably combined with the body 10 and can move relative to the joint part 11. The knocking part 20 is provided with a set part 21, a knocking part 22, a locking part 23 and a protrusion. Section 24, the The sleeve part 21 is movably combined with the joint part 11 of the body 10. Preferably, the sleeve part 21 is a rod that passes through the sleeve hole 111 of the joint part 11, preferably , the cross-section of the sleeve portion 21 is in a shape consistent with the cross-sectional shape of the sleeve hole 111, wherein when the sleeve portion 21 has a circular cross-section, the sleeve portion 21 can be opposite to the joint portion 11 Rotate, and when the sleeve portion 21 has a polygonal cross section, the sleeve portion 21 can only move relative to the joint portion 11 and cannot rotate. The outer surface of one end of the sleeve portion 21 is provided with a locking structure 211 .

The knocking part 22 is set at the end of the sleeve part 21 away from the locking structure 211 and is located below the joint part 11. Further, the knocking part 22 is integrally formed with the sleeve part 21. The striking part 22 can be made of a hard material such as metal, polyethylene (PE) or plastic, or an elastic material such as rubber, silicone or wood. In addition, the striking part 22 can also be made of a magnetic metal. It is made so that the knocking part 22 can absorb a nail body during use, and the knocking part 22 can also be a spherical, flat, axe-like, curved or tapered structure.

The locking part 23 is located in the accommodating space 112 and combined with the sleeve part 21 and abuts against the combining part 11 of the body 10, so that the knocking part 22 is located below the combining part 11, wherein the The relationship between the locking part 23 and the sleeve part 21 is an adjustable structure. Further, the locking part 23 is a bolt combined with the locking structure 211 of the sleeve part 21, as shown in the figure 3 shows that the joint position of the locking part 23 and the sleeve part 21 can be adjusted according to the user, so as to change the distance between the knocking part 22 and the joint part 11; the raised part 24 is set on the sleeve part 21 and the knocking part 22, the raised part 24 can be integrally formed with the sleeve part 21 and the knocking part 22, and the raised part 24 can be a ring structure or a plurality of rings Structure arranged at intervals, the raised portion 24 is interposed between the sleeve portion 21 and the knocking portion 22 to define a thickness T1, further, the raised portion 24 forms a bend toward a side of the joint portion 11 curved surface.

The elastic piece 30 is arranged on the sleeve portion 21 of the knocking piece 20 and is located between the joint portion 11 of the body 10 and the knocking portion 22 of the knocking piece 20. The elastic piece 30 is used to remind the user to knock When hitting, whether its percussion force exceeds the applied force range set by the force-limiting damping device, the top of the elastic member 30 and the The abutting surface 114 of the joint part 11 abuts against, and the bottom end of the elastic member 30 extends to the raised portion 24 of the knocking member 20. Preferably, the inner diameter of the elastic member 30 is consistent with the sleeve portion The outer diameter of 21 is matched, so that the elastic member 30 is in contact with the sleeve portion 21, so that the elastic member 30 can provide the effect of guiding and supporting the sleeve portion 21 during use. Further, the elastic The member 30 is made of an elastic material with a fixed shape, such as spring, rubber, silicone, metal gasket, elastic metal block or elastic block. In use, when the knocking force is less than the preset compression force of the elastic member 30, the user will feel that the knocking portion 22 produces an instant rebound (Instant Rebound); and when the knocking force is greater than the preset compression force of the elastic member 30 When the compression force is set, the user will feel a delayed rebound (Delayed rebound) of the knocking part 22 . Therefore, the user's tapping force can be reminded by identifying whether the elastic member 30 is compressed, thereby providing a force-limited reminding effect.

Please refer to FIG. 2 and FIG. 3 , the reinforcing member 40 is arranged on the striking member 20 and is located between the elastic member 30 and the striking portion 22 of the striking member 20 and is connected to the raised portion 24 Against each other, the reinforcing member 40 has a thickness T2, wherein the thickness T2 of the reinforcing member 40 is greater than the thickness T1 of the raised portion 24 (ie T2>T1), so that the raised portion 24 will not be in contact with the elastic member 30 contact, the reinforcing member 40 is provided with a perforation 41, so that the reinforcing member 40 can be sleeved on the sleeve portion 21 of the knocking member 20 through the perforation 41, the top surface of the reinforcing member 40 and the elastic member 30 The reinforcing member 40 is provided with a contact surface 42 facing the bottom surface of the knocking portion 22 , and the contact surface 42 can fully or partially contact the curved surface of the raised portion 24 .

With the above-mentioned technical features, the first preferred embodiment of the new force-limiting shock-absorbing device can be used to knock a nail body into a wooden board. Please refer to FIG. 1, the user is holding and waving the nail The grip part 12 of the body 10 makes the knocking part 22 of the knocking part 20 hit the nail body. When the knocking part 22 hits the nail body, a reaction force will be generated. When the reaction force is smaller than the elastic part 30 When pre-compressed, the locking part 23 will not be separated from the joint part 11 along with the sleeve part 21, and the elastic member 30 will not be compressed, and the knocking part 22 will not be opposite to the joint part 11. If it moves, the knocking part 22 will be subjected to an instant rebound (Instant Rebound) reaction force.

Furthermore, when the user exerts a large knocking force, the reaction force will be greater than the pre-compression force of the elastic member 30, so that the knocking member 20 will move relative to the joint portion 11, so that the locking portion 23 will follow When the sleeve part 21 is separated from the joint part 11, the elastic member 30 will be compressed, so that the knocking energy will be converted into the compression potential energy of the elastic member 30, and the main body 10 will be swung by the user. The direction continues to move toward the direction of the nail body (that is, it will not rebound temporarily), so that by arranging the elastic member 30 between the joint portion 11 and the reinforcing member 40, not only can a reaction force be generated Delayed rebound (Delayed Rebound) shock absorption and shock-absorbing effect, and in the process of hitting the nail body will not produce instant rebound (Instant Rebound) bouncing situation, so that the nail body is not easy to bend, and can be applied The force is continuously transmitted to the nail body, reducing energy loss and noise generation, allowing the user to fix the nail body in the wood board after only a few knocks, relatively reducing the number of knocks and the required time, Effectively improve the efficiency of operation; and the elastic member 30 can not only provide the effect of shock absorption and shock absorption, but also provide a reminding effect of the force applied; furthermore, by rotating the locking part 23, it can be separated from the sleeve part 21 , and install elastic members 30 with different elastic strengths between the joint part 11 and the knocking part 22, or as shown in Figure 3, change the joint part 11 and the knocking part 22 by rotating the locking part 23 The distance between them makes the elastic member 30 exhibit different compression states, so that the elastic member 30 has different elastic tensions.

Further, as shown in FIG. 3 , the elastic member 30 can absorb and disperse the stress and torque of the striking member 20 through the way that the reinforcing member 40 abuts against the raised portion 24 during the knocking process. Concentrate on the situation where the sleeve part 21 and the knocking part 22 are combined to avoid breakage or damage to the joint after long-term use, and the inner diameter of the elastic member 30 is the same In a matching manner, the elastic member 30 can provide a guiding and supporting effect for the sleeve portion 21, avoiding the impact on the knocking member 20 due to the deflection phenomenon during the knocking process, and further, because the reinforcing member The thickness T2 of 40 is greater than the thickness T1 of the protruding portion 24 , so that the elastic force generated by the elastic member 30 is transmitted to the protruding portion 24 through the reinforcing member 40 during the knocking process.

Please refer to Fig. 4 to Fig. 6 and Fig. 22 (measured with a force gauge), when a nail body 70 is knocked into a wooden board 80 through the first preferred embodiment of the novel force-limiting shock absorber , the user holds and swings the grip portion 12 of the main body 10, so that the striking portion 22 of the striking member 20 strikes the nail body 60, wherein as shown in FIG. 4, the striking portion 22 strikes the nail body 60. The nail body 70 will produce a reaction force. When the reaction force is less than the elastic force of the elastic member 30, the knocking part 22 will not move relative to the joint part 11, and the knocking part 22 will be subject to an immediate rebound. (Instant Rebound) reaction force, at this moment, this force-limiting shock-absorbing device is applied to this nail body 70 an impact force F1 (the first wave power as shown in Figure 22); And when the user as shown in Figure 5 When the nail body 70 is knocked into the plank 80 with a larger knocking force, the reaction force will be greater than the elastic force of the elastic member 30, so that the knocking member 20 will move upward relative to the joint portion 11, and Let the elastic member 30 be compressed, so that the knocking energy is converted into the compression potential energy of the elastic member 30. At this time, the force-limiting shock-absorbing device is converted into a rigid body by the compression deformation of the elastic member 30 , and then apply a strain force F2 to the nail body 70 (the second wave force F2 shown in Figure 22); wherein, the second wave force (strain force F2) is approximately equal to the first wave force (impact force F1) half.

Please refer to Fig. 6 again, the main body 10 will continue to move toward the nail body 70 in the direction of the user's swing (that is, it will not rebound temporarily). At this time, the compression of the elastic member 30 in the compressed state Potential energy will be released to make the elastic member 30 stretch, and then push the striking part 22 to move towards the nail body 70, so as to increase the contact time between the striking part 22 and the nail body 70. At this time, the The force-limiting shock-absorbing device is to apply an elastic force F3 (the third wave force shown in Figure 22 ) to the nail body 70 by the elastic recovery of the elastic member 30, which not only increases the knocking portion 22 and the nail body 70 contact time, and the force-limiting shock-absorbing device can be returned to the initial position (original height) by the elastic force F3, and no external force is needed to lift the force-limiting shock-absorbing device, which is relatively labor-saving and convenient to use ; In addition, in Figure 22, another wave of force will be measured after the elastic force F3 appears. The echo force B1 with internal rebound.

In addition, in conjunction with the data in Figure 21 (traditional existing hammer) and Figure 22 (this new force-limiting shock absorber), it can be seen that at the same striking speed, the impact force F1 of the traditional existing hammer is quite large. As long as the iron nail penetrates into the wooden board, it is enough as long as the appropriate force is used. If the force is too large, there will be too much reaction force, which will cause hand injury to the operator. Not only will a large reaction force be generated during the knocking process, but the user's hands will be easily injured, and the large impact force F1 will also bounce during the knocking process, thereby reducing the contact with the nail body 70 time, the energy transmission cannot be effectively performed, and the action of a single impact force F1 cannot allow the traditional existing hammer to return to the initial position (height) after being struck. Therefore, after the user uses the traditional existing hammer, It is still necessary to apply additional force to raise the traditional existing hammer to prepare for subsequent knocking, which is relatively laborious and inconvenient to use; on the other hand, the new force-limiting shock absorber, at the same knocking speed as the traditional existing hammer, this The impact force F1 of the new force-limiting shock absorbing device is about half of the impact force F1 of the traditional existing hammer. Therefore, the impact force F1 of the new force-limiting shock absorbing device can not only avoid a large reaction force, but also effectively reduce the impact on the user. The reaction force of the hand, and the smaller impact force F1 will also avoid the bouncing situation during the knocking process, and at the same time cooperate with the action of the strain force F2 to greatly increase the contact time between the knocking part 22 and the nail body 70 , as can be seen from the force gauge charts in Figure 21 and Figure 22, the force action time of the hammer in Figure 21 (traditional existing hammer) and Figure 22 (the new force-limiting shock-absorbing device) on the force gauge, the new limit The force action time of the force shock absorbing device is obviously longer than that of the traditional existing hammer force, so the energy is effectively transmitted, and the integral of force and time in the chart recorded by the force gauge, that is, the accumulation of energy, can be found. The integral of the force and time of the damping device, that is, the accumulation of energy is significantly higher than the performance of the traditional existing hammer. At the same time, it can also be found in the experiment that the hammer hits the depth of the nail body 70 into the wooden board 80 at the same hitting speed. Next, the hitting depth of the nail body 70 of the new force-limiting shock absorbing device is more than 30% more than the depth of the traditional hammer hitting the nail body 70, which can also prove that the work efficiency of the new force-limiting shock absorbing device is better. Further, through the separation structure arrangement of the body 10, the knocking part 20, the elastic part 30 and the reinforcing part 40 of the new force-limiting shock absorber, the lateral shock force will not be transmitted, thus reducing the grip more effectively. The vibration of the holding part 12 has a better shock absorption effect, and can also be used in the process of knocking At the same time, it has the effect of shock absorption and buffering and protecting the overall structure from the impact of the sudden and sudden force of the knocking force, increasing the structural strength; furthermore, the new force-limiting shock absorbing device will pass through in sequence during the knocking process. The impact force F1, the strain force F2 and the elastic force F3 exert three waves of force on the nail body 70, and through the energy accumulation of the aforementioned three waves, compared with the traditional existing hammer, only a single wave of impact can be achieved during the knocking process. As far as the force F1 is applied to the nail body 70, the force-limiting shock-absorbing device of the present invention can knock the nail body 70 stably and quickly into the board through the cumulative sum of three wave energies (impact force F1+strain force F2+elastic force F3) 80, not only can effectively reduce the number and time required for knocking, but also can effectively avoid bouncing and make the user's hand feel uncomfortable or injured due to the reaction force, and can pass through the elastic force after knocking. F3 restores the new type of force-limiting shock absorber to the initial position (height), which saves the height potential energy. For example, the ball can automatically jump up to the original height after hitting the ball, so that the user does not need to apply additional force The subsequent knocking operation can be carried out, which is relatively labor-saving and convenient to use. Summarizing the above principles, the advantages of the novel force-limiting shock-absorbing device are labor-saving, shock-absorbing, and return to the original lifting height, which is superior to the effectiveness of the traditional existing hammer.

With the above-mentioned technical features, the novel force-limiting shock-absorbing device can not only provide a delayed rebound (Delayed) by the reaction force through the elastic member 30 located between the joint part 11 and the knocking part 22 when in use. Rebound) shock-absorbing and shock-absorbing effects, and can increase the contact time of the knocking portion 22 and the nail body at the same time, not only makes the nail body 70 difficult to bend, but also can reduce energy loss and noise generation, and relatively reduce The number of knocks and the time required can alleviate the discomfort of the user or patient, allowing the user to firmly hold the body 10 for knocking, and because the structure is simplified, only the elastic parts 30 with different elastic strengths need to be replaced Or by rotating the locking part 23, different elastic tensions of the elastic member 30 can be provided; further, the reinforcing member 40 is provided between the elastic member 30 and the knocking part 22, and the sleeve part 21 and the knocking part 22, the method of forming the raised part 24 can prevent the elastic force generated by the elastic member 30 during the knocking process from directly producing on the junction of the sleeve part 21 and the knocking part 30. Stress concentration causes damage and fracture; further, through the way that the inner diameter of the elastic member 30 matches the outer diameter of the sleeve portion 21, the elastic member 30 can provide a guide and support for the sleeve portion 21 As a result, the phenomenon of lateral deflection can be effectively reduced, thereby providing a force-limiting shock-absorbing device that improves the structural strength, prolongs the service life and avoids deflection during the knocking process.

Wherein, in order to allow the elastic member 30 located between the joint portion 11 and the reinforcing member 40 to abut against the abutting surface 114 of the joint portion 11 and the top surface of the reinforcing member 40 smoothly, the elastic member 30 During manufacture, the top and bottom are flattened so as to be able to abut against the abutting surface 114 and the reinforcing member 40 stably, and the elastic member 30 needs to be compressed and clamped during the flattening process, as shown in FIG. 3 , The gaps G1 and G2 at the top and bottom of the elastic member 30 are smaller than the gap G at the rest of the elastic member 30, so that when the force limiting and shock absorbing device is in use, when the elastic member 30 is compressed by an external force, the elastic Because the gaps G1 and G2 are small, the top and the bottom of the member 30 first abut against the rest of the elastic member 30 to generate stress concentration.

Please refer to the second preferred embodiment of the novel force-limiting shock absorber shown in Figure 7. The difference between it and the first preferred embodiment shown in Figures 1 to 3 is that in the second preferred embodiment Among them, the thickness T2 of the reinforcing member 40A is the same as the thickness T1 of the raised portion 24 (T2=T1), so that the bottom end of the elastic member 30 abuts against the reinforcing member 40A and the raised portion 24 at the same time. The elastic force generated by the elastic member 30 is transmitted to the reinforcing member 40A and the protruding portion 24 during hitting, so as to avoid being directly transmitted to the junction of the sleeve portion 21 and the knocking portion 22 .

Please refer to the third preferred embodiment of the novel force-limiting shock absorber shown in Figure 8. The difference between it and the first preferred embodiment shown in Figures 1 to 3 is that in the third preferred embodiment Among them, the thickness T2 of the reinforcing member 40B is smaller than the thickness T1 of the raised portion 24 (T2<T1), so that the bottom end of the elastic member 30 abuts against the raised portion 24, and the elastic member The elastic force generated by 30 is firstly transmitted to the raised portion 24 and then transmitted to the reinforcing member 40B, so as to avoid being directly transmitted to the junction of the sleeve portion 21 and the striking portion 22 .

Please refer to the fourth preferred embodiment of the novel force-limiting shock absorber shown in Figure 9. The difference between it and the first preferred embodiment shown in Figures 1 to 3 is that in the fourth preferred embodiment in, the The knocking member 20C is further provided with at least one nail groove 25C, and each nail groove 25C is axially recessed and formed on the outer peripheral surface of the knocking part, for a nail body 70 to be placed on the outer peripheral surface of the knocking part Further, the knocking member 20C is provided with a magnetic attraction 26C on the inner side of each nail placement groove 25C, and the nail body 70 is adsorbed to the corresponding nail placement groove 25C through each magnetic attraction piece 26C, so that the user can The operator does not need to hold the nail body 70 by hand to perform knocking operations on the nail body 70, which can effectively avoid the situation where the nail body 70 needs to be positioned by hand and accidentally hit the hand, and will not be limited by the desired location of the nail body 70. The location is relatively convenient to use. Preferably, the knocking member 20C is provided with a plurality of nailing grooves 25C, and the lengths of each nailing groove 25 along the axial direction of the knocking part are different, so that each of the knocking parts The nail groove 25C can be used for placing nail bodies 70 of different lengths. Furthermore, the user can adjust the position of the nail body 70 by rotating the knocking part relative to the rotation position of the body according to the desired position of the nail body 70. The direction of the groove 25C relative to the body enables the nail body 70 to be arranged in different orientations of the body along with the positions of the nail grooves 25C relative to the body, so that the nail body 70 can be adjusted according to the desired position of the nail body 70. The position of the nail body 70 relative to the body.

Please refer to the fifth preferred embodiment of the novel force-limiting damping device shown in Figure 10, the difference between it and the fourth preferred embodiment shown in Figure 9 is: in the fifth preferred embodiment, The at least one nail groove 25D runs through the top surface and the bottom surface of the knocking part of the knocking part 20D axially, so that after the nail body 70 and the magnetic attraction part 26D are adsorbed, the head of the nail body 70 can pass through the at least one A nail groove 25 abutting against the abutting surface 114 can stably allow the nail body 70 to be nailed into the object as the knocking member 20D moves.

Please refer to the fifth preferred embodiment of the novel force-limiting shock-absorbing device shown in Figure 11. The difference between it and the first preferred embodiment shown in Figures 1 to 3 is that the force-limiting shock-absorbing device further A limiting structure 60E is provided, and the limiting structure 60E is provided with an accommodating groove 61E, a limiting groove 62E and a limiting member 63E, wherein the accommodating groove 51E axially penetrates the joint portion 11E from outside to inside, and is concave It is arranged on the inner surface of the joint part 11E and communicates with the sleeve hole. The limiting groove 62E is a groove body recessed on the outer surface of the sleeve part 21E and located in the sleeve hole. Part 63E is set in the accommodation groove 61E and the limiting groove 62E In between, the knocking part 20E is restricted by the limiting structure 60E so as not to rotate relative to the main body. Furthermore, the knocking part 20E is an ax blade.

Please refer to the sixth preferred embodiment of the new force-limiting shock absorber shown in Figures 12 to 16. The difference between it and the first preferred embodiment shown in Figures 1 to 3 is that the first preferred embodiment The top and bottom gaps G1 and G2 of the elastic member 30 in the example are smaller than the gap G in other parts, and the stress concentration effect is produced at the top and bottom of the elastic member 30 during use. Therefore, the present invention is based on the sixth In a preferred embodiment, the elastic member 30F of the force-limiting shock-absorbing device reduces the lengths of its top and bottom edges respectively, so that the gaps between the top, middle section and bottom of the elastic member 30F after the length reduction are the same (that is, G1= G2=G); Further, in order to allow the elastic member 30F after the length reduction can be smoothly arranged between the reinforcing member 40F and the joint portion 11F, the force-limiting shock-absorbing device is provided with an auxiliary member 50F, and the auxiliary member 50F It is sleeved on the sleeve part 21F and between the joint part 11F and the elastic part 30F, and the auxiliary part 50F is provided with a wedge-shaped block 51F protruding from a side facing the elastic part 30F, and the reinforcement part 40F A wedge-shaped block 43F is protruded toward the top surface of the elastic member 30F, so that the bottom and top of the elastic member 30F are in contact with the two wedge-shaped blocks 43F, 51F respectively, and can be stably installed on the joint portion 11F and the reinforcement. between pieces 40F without deflection.

The sixth preferred embodiment of the new force-limiting shock absorber is in use, because the gaps G, G1, and G2 at each part of the elastic member 30F are of the same size, so that each part of the elastic member 30F can bear the pressure during compression. The same stress without stress concentration can not only prolong the service life of the elastic member 30F, but also reduce the size of the elastic member 30F by setting wedge-shaped blocks 43F and 51F between the reinforcing member 40F and the auxiliary member 50F. The lengthened elastic part 30F can still be smoothly arranged between the reinforcing part 40F and the auxiliary part 50F, providing a guiding and supporting effect for the sleeve part 21F.

Please refer to the seventh preferred embodiment of the novel force-limiting shock absorber shown in Figure 17, which differs from the first preferred embodiment shown in Figures 1 to 3 in that: In the seventh preferred embodiment, the length of the gripping portion 12G is L1, and the length of the shock absorber 121G is L2, wherein the shock absorber The length L2 of the vibration element 121G is greater than one-half of the length L1 of the grip part 12G, and less than or equal to the length L1 of the grip part 12G (1/2L1<L2≦L1), increasing the user's ability to hold the grip Part 12G performs tapping using the range.

Please refer to the eighth preferred embodiment of the novel force-limiting shock-absorbing device shown in Figure 18, which differs from the seventh preferred embodiment shown in Figure 17 in that: In a preferred embodiment, the holding part 12H is provided with several shock absorbing parts 121H, and the several shock absorbing parts 121H are sleeved on the holding part 12H and can be made of different materials; please refer to the figure As shown in 19, the eighth preferred embodiment of the new force-limiting shock-absorbing device can hold the shock-absorbing member 121H in different positions according to the user's needs, so that the force-limiting shock-absorbing device can be used in the process of use. In both, a shock absorbing effect can be provided through the several shock absorbing elements 121H on the grip portion 12H.

The above is only a preferred embodiment of the present invention, which can be applied to the force-limiting shock-absorbing structure of hammers or axes, and is not intended to limit the present invention in any form. Anyone with ordinary knowledge in the technical field, if Within the scope of the technical solution proposed in the present model, the equivalent embodiments that utilize the technical content disclosed in the present model to make partial changes or modifications, and do not depart from the technical solution content of the present model, still belong to the scope of the technical solution of the present model Inside.

10: Ontology

11:Joint part

112:Accommodating space

113: Nail pulling structure

114: abutment surface

12: Grip

121: shock absorber

20: Percussion piece

22: Percussion Department

23: Locking part

30: Elastic parts

40: Reinforcements

Claims (21)

A force-limiting and shock-absorbing device, which is provided with: a body, the body is provided with a joint part at one end, the joint part is provided with a set of holes, and the body is provided with a grip part at the end far away from the joint part; The striking part is movably combined with the body and can move relative to the joint part. The striking part is provided with a set part, a striking part, a locking part and a raised part. The set The set part is movably combined with the set hole of the set part, the knocking part is arranged at one end of the set part and is located below the set part, the locking part is combined with the set part and combined with the set part The protruding part is arranged at the junction of the sleeve part and the knocking part; an elastic part is arranged at the sleeve part of the knocking part and is located at the joint part of the body and the knocking part. Between the knocking parts of the parts, it is used to remind the user whether the knocking force exceeds the force range set by the force-limiting shock absorbing device when knocking; and a reinforcement, which is arranged on the The knocking part is located between the elastic part and the knocking part of the knocking part and abuts against the raised part; wherein, through the reinforcing part arranged between the elastic part and the knocking part, and A raised portion abutting against the reinforcing member is formed between the sleeve portion and the knocking portion, which can avoid the elastic force generated by the elastic member during the knocking process. For the combination of the sleeve portion and the knocking portion The situation where stress concentration occurs at the place leads to damage and fracture. The force-limiting shock-absorbing device according to claim 1, wherein the protrusion is a ring structure. The force-limiting and shock-absorbing device according to Claim 1, wherein the raised portion is a plurality of ring-shaped raised structures arranged at intervals. The force-limiting shock-absorbing device according to any one of claims 1 to 3, wherein the raised portion has a thickness, the reinforcing member has a thickness, and the thickness of the reinforcing member is greater than the thickness of the raised portion. The force-limiting shock absorbing device according to any one of claims 1 to 3, wherein the raised portion has a thickness, the reinforcing member has a thickness, and the thickness of the reinforcing member is equal to the thickness of the raised portion. The force-limiting shock absorber according to any one of claims 1 to 3, wherein the raised portion has a thickness, the reinforcing member has a thickness, and the thickness of the reinforcing member is smaller than the thickness of the raised portion. The force-limiting shock-absorbing device according to any one of claims 1 to 3, wherein a side surface of the protruding part facing the joint part forms a curved surface, and the reinforcement part is provided with a contact point facing the bottom surface of the striking part. surface, the contact surface can completely contact with the curved surface of the raised portion. The force-limiting shock-absorbing device according to any one of claims 1 to 3, wherein a side surface of the protruding part facing the joint part forms a curved surface, and the reinforcement part is provided with a contact point facing the bottom surface of the striking part. The contact surface can be in contact with the curved surface of the raised portion. The force-limiting and shock-absorbing device as described in any one of claims 1 to 3, wherein the joint part is transversely provided with an accommodating space communicated with the casing hole at the middle section, and the locking part is located in the accommodating space. The space is combined with the sleeve part and abutted against the joint part of the body. The force-limiting and shock-absorbing device as described in any one of claims 1 to 3, wherein the joint portion forms an abutment surface on the end surface forming the sleeve hole, and the top end of the elastic member and the abutment portion of the joint portion Face to face. The force-limiting shock-absorbing device as described in Claim 10, wherein the knocking member is provided with at least one nailing groove, and each nailing groove is axially recessed and formed on the outer peripheral surface of the knocking part for a nail body placed on the outer peripheral surface of the striking part. The force-limiting and shock-absorbing device as described in claim 11, wherein the knocking member is provided with a magnetic attraction on the inner side of each nail placement groove, through which the nail body is adsorbed to the corresponding nail placement groove. . The force-limiting shock-absorbing device as described in Claim 11, wherein the at least one nail groove is axially penetrated through the top surface and the bottom surface of the knocking part of the knocking member, so that the head of the nail body can pass through the at least one Put the nail groove and lean against the abutment surface. The force-limiting shock-absorbing device as described in any one of claims 1 to 3, wherein the force-limiting shock-absorbing device is provided with a position-limiting structure, and the position-limiting structure is provided with an accommodating groove, a position-limiting groove and a position-limiting part, the accommodating groove axially penetrates the joint part from the outside to the inside, and is recessed on the inner surface of the joint part and communicates with the sleeve hole, the limiting groove is recessed on the outer surface of the sleeve part and Located in the casing hole, the limiting member is arranged between the accommodating groove and the limiting groove, so that the knocking member is restricted by the limiting structure and cannot rotate relative to the body. The force-limiting and shock-absorbing device according to claim 14, wherein the knocking part is an ax blade. The force-limiting shock-absorbing device as described in any one of claims 1 to 3, wherein the gaps of the top, middle section and bottom of the elastic member are the same, and the force-limiting shock-absorbing device is provided with an auxiliary part, and the auxiliary part is a sleeve The auxiliary part is provided with a wedge-shaped block on the side facing the elastic part, and the reinforcing part is protruded on the top surface facing the elastic part. A wedge block is provided, so that the elastic piece can be stably arranged between the joint portion and the reinforcement piece by abutting against the two wedge pieces. The force-limiting shock-absorbing device as described in claim 4, wherein the gaps between the top, middle and bottom of the elastic member are the same, and the force-limiting shock-absorbing device is provided with an auxiliary part, which is sleeved on the sleeve part And between the joint part and the elastic part, and the auxiliary part is provided with a wedge-shaped block on a side facing the elastic part, and the reinforcing part is provided with a wedge-shaped block on the top surface of the elastic part, so that The elastic piece can be stably arranged between the joint portion and the reinforcing piece by abutting against the two wedge blocks. The force-limiting shock-absorbing device as described in claim 5, wherein the gaps between the top, middle and bottom of the elastic member are the same, and the force-limiting shock-absorbing device is provided with an auxiliary part, which is sleeved on the sleeve part And between the joint part and the elastic part, and the auxiliary part is provided with a wedge-shaped block on a side facing the elastic part, and the reinforcing part is provided with a wedge-shaped block on the top surface of the elastic part, so that It's time to bomb The performance part can be stably arranged between the joint part and the reinforcement part by abutting against the two wedge blocks. The force-limiting shock-absorbing device as described in Claim 6, wherein the gaps between the top, middle and bottom of the elastic member are the same, and the force-limiting shock-absorbing device is provided with an auxiliary part, which is sleeved on the sleeve part And between the joint part and the elastic part, and the auxiliary part is provided with a wedge-shaped block on a side facing the elastic part, and the reinforcing part is provided with a wedge-shaped block on the top surface of the elastic part, so that The elastic piece can be stably arranged between the joint portion and the reinforcing piece by abutting against the two wedge blocks. The force-limiting shock-absorbing device according to any one of claims 1 to 3, wherein at least one shock-absorbing element is provided on the grip, and the length of the at least one shock-absorbing element is greater than half of the length of the grip One, and less than or equal to the length of the grip. The force-limiting shock-absorbing device as described in Claim 20, wherein several shock-absorbing pieces are provided on the gripping portion, and the several shock-absorbing pieces are sheathed on the gripping portion and made of different materials.

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