TWM495272U - Shock absorbing percussion tool - Google Patents

Description

Shock-absorbing tapping tool

This creation involves the shock absorbing technique of the tapping tool.

A tapping tool usually consists of a head and a handle. The shank is coupled to the head and extends generally a length that is generally perpendicular to the head.

Any user holds the handle and swings the head to drive a nail into the wall or table. The tap produces energy, part of the energy is converted into heat and dissipated, and part of the energy is transmitted to the handle through the head, causing the hand to be shocked by shock waves, and then feeling sore, paralyzed or tired.

In order to reduce the vibration of the hand and reduce fatigue, the creator of this case has filed invention patent No. 103116273 and new type M457615, etc., in the case of the case.

The creators of this case are not complacent, still adhere to the spirit of excellence, and strive to develop and manufacture related industries, and finally develop a shock-absorbing percussion tool to improve the problem of the use of things.

The main purpose of this creation is to adopt a new shock absorbing structure, reduce the vibration of the hand, reduce fatigue, and have the effect of controlling the amount of material used.

Due to the above objectives, the creation is to set at least one shock absorbing assembly in a tapping tool.

The tapping tool includes a head; a handle coupled to the head that extends generally perpendicular to the head. The handle has a centerline that passes through the ends of the handle along the length.

The shock absorbing assembly is formed on the handle and passes through the centerline. The shock absorbing assembly includes a slot, a connecting portion and a filler. The groove has a groove bottom and at least two groove walls. The bottom ends of the groove walls are connected to the bottom of the groove, and the top ends are connected to the handles and form a notch apart from each other. The connecting portion is located at the back of the bottom of the groove, and the notch is not on the same side of the shank. The shape of the filler is approximately equal to the groove and can be inserted into the groove of the shank.

Therefore, the tapping tool taps the causative force, and is absorbed/cancelled by the connecting section like the cantilever spring, and the groove blocks the transmission of part of the energy, relatively reducing the amplitude of the handle and reducing the fatigue of the hand.

Hereinafter, the purpose, structure and characteristics of the related embodiments will be described in detail based on the drawings, and it is believed that the techniques, means and functions adopted by the present invention can be obtained from an in-depth and specific understanding.

10‧‧‧Claw hammer

11‧‧‧ grip

12‧‧‧ head

13‧‧‧ handle

14‧‧‧Knocking Department

16‧‧‧ nailing department

18‧‧‧ gap

20‧‧‧Vibration assembly

21‧‧‧ notch

22‧‧‧ slots

23‧‧‧Connecting Department

24‧‧‧ bottom

25‧‧‧ slot wall

30‧‧‧Filling

40‧‧‧Protective layer

L‧‧‧ center line

Θ‧‧‧ angle

Figure 1 is a perspective view of a first embodiment of the present tapping tool.

Figure 2 is a plan view of a partial tapping tool.

Fig. 3 is a schematic cross-sectional view taken along line A-A of Fig. 2.

Figure 4 is a diagram showing the state of use of the tapping tool.

Figure 5 is a partial cross-sectional view showing the second embodiment of the present tapping tool.

Please refer to Figures 1~3 to illustrate the specific structure of the claw 10 as a tapping tool. The claw 10 includes a head 12, a handle 13, a grip 11 and two shock absorbing assemblies 20. In the present embodiment, the head 12 and the shank 13 are made of a metal material, and the two are designed to be integrated. In some embodiments, the handle 13 is separate from the head 12 and the two are used in combination, also within the scope of this creation. The grip 11 is made of a non-metal material, and the handle 13 is away from the end of the head 12, so that a user can hold the handle 13 and the head 12 to simultaneously swing. The shock absorbing assembly 20 is disposed on the handle 13 for absorbing/countering the force generated by the tapping.

Below the head 12 is a tapping portion 14 from which a nail puller portion 16 extends in the opposite direction from the tapping portion 14. The nail removing portion 16 is bifurcated, and a notch 18 is formed in the center thereof, and the notch 18 is substantially V-shaped, so that the nail removing portion 16 is applied to the removal of the nail.

The shank 13 is a flat metal rod that is coupled to the head 12 and extends a length along a direction generally perpendicular to the head 12. Further, the shank 13 has a center line L which passes through both ends of the shank 13 in the longitudinal direction.

Each shock absorbing assembly 20 is formed in the shank 13 which passes through the centerline L of the shank 13. The shock absorbing assembly 20 includes a slot 22, a connecting portion 23 and a filler 30.

The groove 22 is adjacent to the connecting portion 23 and is provided at the same portion of the shank 13. Therefore, laser cutting, discharge (EDM) cutting or grinding water The cutting method such as a knife forms a desired groove 22 at the edge of the shank 13, precisely controls the large and small variations of the groove 22, and the amount and toughness of the joint portion 23.

Specifically, the groove 22 is open at one end and closed at the other end and adjacent to the connecting portion 23. The trough 22 has a trough bottom 24 and a two trough wall 25, with the trough bottom 24 acting as the closed end of the trough 22. In the figure, the groove bottom 24 is a flat surface. In some embodiments, the groove bottom 24 can also be a concave or convex curved surface.

The bottom end of each groove wall 25 is connected to a corresponding side of the groove bottom 24, and the top end is connected to the same side of the shank 13, and a notch 21 is formed spaced apart from each other to serve as an open end of the groove 22. Therefore, the depth of the groove 22 is substantially equal to the linear distance from the tip end of the groove wall 25 to the groove bottom 24, but is longer than the distance from the edge of the shank 13 to the center line L, so that the groove 22 partially passes through the center line L.

In addition, each of the groove walls 25 is inclined. The groove wall 25 and the groove bottom 24 have an angle θ which is between 40° and 80° and is acute. Therefore, the distance of the notch 21 is smaller than the width of the groove bottom 24 as a normal state. In other words, the top ends of the two groove walls 25 are separated by a distance shorter than the distance from the bottom end of the two groove walls 25.

The connecting portion 23 is located at the back of the groove bottom 24, which is not on the same side of the shank 13 as the notch 21. From another point of view, the shank 13 is divided into a plurality of sections, and the two adjacent sections are joined together by the connecting portion 23.

The filler 30 is a polymer material such as Polyurethane (PU). The filler 30 has a low ductility and is compressed by force to return to its original state. In the figure, the filler 30 has a shape substantially equal to the groove 22 and can be caulked into the groove 22 of the shank 13. in.

As shown in Fig. 4, any user operates the handle 13, swings the claw 10, and strikes the nail 40 with the head 12 to perform the nailing into the wall 42. The striking portion 14 taps the nail head 44 to transfer the kinetic energy of the claw hammer 10 to the nail 40, increasing the depth of the nailing into the wall surface 42. The reaction force of the wall 42 is fed back to the striking portion 14 via the nail 40, causing the head 12 to vibrate while passing it along the handle 13 to the hand.

Close to the shock absorbing assembly 20 of the head 12, the transmission of part of the kinetic energy is blocked by the slot 22, and the remaining vibration energy is transferred from the connecting portion 23 to the rear of the handle 13. The connecting portion 23 acts like a cantilever spring, supporting the two groove walls 25 to be close to or apart from each other, and the volume of the filler 30 is simultaneously compressed or released, except that the width of the notch 21 is rapidly reduced or expanded. Therefore, the first wave amplitude of the claw 10 is weakened by the connecting portion 23 in conjunction with the absorption/cancellation of the filler 30.

The shock absorbing assembly 20, which is further away from the head 12, traverses the path of the shock wave along the shank 13. Since the configurations of the two shock absorbing assemblies 20 are completely identical, but the orientations are opposite, the remaining amplitude transmission of the claw hammer 10 is disturbed by the grooves 22, and is also absorbed/cancelled by the connecting portion 23 and the filler 30 to be weakened again.

In this way, the hammering operation is performed by the claw hammer 10, and the vibration energy of the head 12 is blocked or weakened by the shock absorbing assembly 20, and finally the amplitude transmitted to the user is weakened to an almost negligible situation. Of course, it can't cause injury and successfully reduce hand fatigue.

According to the above description, the number of shock absorbing assemblies 20 can be visualized. Need to increase, can also be transferred to other percussion tools, such as hammers.

In the tapping tool of FIG. 5, the disclosed structure is substantially the same as the first embodiment, except that a protective layer 40 is wrapped around the handle 13 and the shock absorbing assembly 20, and the filler 30 is sealed. Inside the slot 22.

Preferably, the protective layer 40 is made of polyurethane, and is covered on the outer surface of the handle 13 by means of injection molding. Since the protective layer 40 and the filler 30 are both made of a non-metal material, they have non-conductive properties.

The above embodiments are merely illustrative of the present invention and are not intended to limit the creation. Various changes, modifications, and applications derived from the above-described embodiments of the skilled artisan are within the scope of the present invention.

10‧‧‧Claw hammer

12‧‧‧ head

13‧‧‧ handle

14‧‧‧Knocking Department

16‧‧‧ nailing department

18‧‧‧ gap

20‧‧‧Vibration assembly

21‧‧‧ notch

22‧‧‧ slots

23‧‧‧Connecting Department

24‧‧‧ bottom

25‧‧‧ slot wall

30‧‧‧Filling

L‧‧‧ center line

Θ‧‧‧ angle

Claims (9)

A shock-absorbing percussion tool is provided with at least one shock absorbing assembly (20) in a tapping tool; wherein the tapping tool comprises: a head (12); a handle (13) connected to the head (12) And extending a certain length along a direction substantially perpendicular to the head (12), the handle (13) has a center line (L), and the center line (L) passes through the ends of the handle (13) along the length direction; the shock absorbing assembly (20) Formed on the handle (13) and passing through the center line (L), comprising: a slot (22) having a slot bottom (24) and at least two slot walls (25), the slot walls (25) bottom end and slot The bottoms (24) are connected, the top ends are connected to the handles (13) and are spaced apart from each other to form a notch (21); a connecting portion (23) is located on the back of the groove bottom (24), and the notch (21) is not in the handle (13) The same side; a filler (30) having a shape substantially equal to the groove (22), the filler (30) being inserted into the groove (22) of the handle (13), and the absorption/offset head (12) striking The force of the relative reduction of the amplitude of the shank (13). The shock absorbing percussion tool of claim 1, wherein the groove (22) has a depth from a top end of the groove wall (25) to a groove bottom (24) that is larger than a shank (13) edge to a center line ( The distance of L). The shock absorbing percussion tool of claim 1, wherein each groove wall (25) of the groove (22) is at an angle (θ) with the groove bottom (24) to make a notch (21) The usual distance is smaller than the width of the bottom of the groove (24). The shock absorbing percussion tool of claim 3, wherein the angle (θ) is an acute angle range between 40° and 80°. The shock absorbing percussion tool of claim 1, wherein the groove bottom (24) of the groove (22) may be a concave curved surface, a convex curved surface or a flat surface. The shock absorbing percussion tool of claim 1, wherein the tapping tool has two or more shock absorbing assemblies (20), and the notches (21) of the adjacent two slots (22) are not in the shank The same side of (13). The shock absorbing percussion tool of claim 1, further comprising a protective layer (40) coated with a protective layer (40) on the outside of the handle (13) and the shock absorbing assembly (20). The shock absorbing percussion tool of claim 6, wherein the protective layer (40) and the filler (30) are both made of a non-metallic material. The shock absorbing percussion tool of claim 1, wherein the head (12) and the shank (13) are integrally formed of a metal material.