TWI487604B - Shockproof hand tool - Google Patents

Description

Shockproof hand tool

The invention relates to a hand tool such as a punching knife, a chisel, a screwdriver, and the like, and particularly relates to a shockproof hand tool.

A hand tool is an apparatus widely used in the fields of machinery, engineering, and the like, such as a chisel, a punching knife, a screwdriver, etc., and a user applies a target object when holding such a hand tool to hit a target. The force and the corresponding reaction force are transmitted to the user's hand through the hand tools in the form of vibration, which easily causes the user's hand to be numb.

There are currently hand tools with double springs to solve the above problems, such as Taiwan Patent No. M382187 and No. M374942. However, the former uses only one of the springs to absorb the shock, and the shock absorption effect is not enough. The latter is shock-absorbing by two springs, however, the failure rate is high. Furthermore, in the tapping tool disclosed in the M374942 patent, the two springs are respectively enclosed by a closed cover in a plastic/rubber grip sleeve, and each end has a corresponding end. The closure is closed, which causes the two closure caps to be pushed by the corresponding springs for a long time, especially when the tapping tool is struck. After a period of pushing, the two closures are likely to loosen without warning and cause a malfunction. In addition, the two springs constantly rub the corresponding closing cover and the grip sleeve when the telescopic operation is performed, so that the gap between the corresponding closing cover and the grip sleeve is enlarged, and the enlarged gap is easy to cause the corresponding spring to fall into And stuck inside and formed a fault.

In order to solve the problem in the prior art, the closure cover of the striking tool is pushed by the spring for a long time, causing looseness or jamming in the enlarged gap between the closure cap and the grip sleeve to form a malfunction. The present invention provides a shockproof hand tool.

More specifically, the shockproof hand tool of the present invention comprises: a grip sleeve, a rod body, a first compression spring and a second compression spring.

The sleeve has two opposite ends and a passage extending through the opposite ends, and the two ends of the sleeve are recessed inwardly to form an upper receiving groove and a lower receiving groove, and an upper portion of the inner wall of the upper receiving groove is formed The retaining surface forms a lower stop surface at the bottom of the inner wall of the lower receiving groove.

The rod body extends through the grip sleeve and is movable relative to the grip sleeve. The rod body has an upper portion protruding from the bottom of the upper receiving groove, a lower portion protruding from the bottom of the lower receiving groove, and a rod is fixed on the rod An upper blocking portion on a circumferential surface of the upper portion of the body and a lower blocking portion fixed on a circumferential surface of the lower portion of the shaft.

The first compression spring is sleeved on the upper portion of the rod body, and one end of the first compression spring abuts against the upper blocking surface, and the other end abuts against the upper blocking portion.

The second compression spring is sleeved on the lower portion of the rod body, and one end of the second compression spring abuts against the lower blocking surface, and the other end abuts against the lower blocking portion.

Preferably, in the anti-shock tool of the present invention, the upper blocking portion and the lower blocking portion are respectively located in the upper receiving groove and the lower receiving groove.

Preferably, in the anti-shock tool of the present invention, a spacer is disposed on the upper surface and the lower surface, respectively.

Compared with the prior art, the anti-shock tool of the present invention does not fix the spring through the closing cover, but is achieved by fixing the upper and lower portions of the rod, so that the present invention can solve the prior art. The problem of a tapping tool failure due to the use of a closed cover.

1‧‧‧ grip

10‧‧‧ channel

11‧‧‧ First end

12‧‧‧ second end

13‧‧‧上容槽

14‧‧‧Under the slot

15‧‧‧Upper face

16‧‧‧ Lower stop

17‧‧‧ disc

18‧‧‧Parts

2‧‧‧ rod body

21‧‧‧上段

22‧‧‧ lower section

23‧‧‧Upper Ring Ditch

24‧‧‧ lower ring

25‧‧‧Upper

26‧‧‧ Lower dam

3‧‧‧First compression spring

4‧‧‧Second compression spring

5‧‧‧Chisel

6‧‧‧shims

7‧‧‧shims

The first figure is a schematic view of a mechanism of a preferred embodiment of the shock-proof hand tool of the present invention.

The second figure is a cross-sectional view of a preferred embodiment of the shock-proof hand tool of the present invention.

The third figure is a partial enlarged view of a preferred embodiment of the shock-proof hand tool of the present invention.

For a better understanding of the technical features, objects, and advantages of the present invention, the embodiments of the present invention are described in conjunction with the drawings.

The first and second figures show a preferred embodiment of the shockproof hand tool of the present invention. For example, the anti-shock tool includes a grip 1, a rod 2, a first compression spring 3, and a second compression spring 4.

The grip 1 is made of a rubber material, and has two opposite ends, which are a first end portion 11 and a second end portion 12 respectively, and has a passage through the first end portion 11 and the second end portion 12 . 10; the first end portion 11 extends to the outer peripheral surface to form a disc 17 and is recessed inwardly to form an upper receiving groove 13 having a width larger than the passage 10. The bottom portion of the inner wall of the upper receiving groove 13 defines an upper blocking surface 15 The second end portion 12 protrudes from the outer peripheral surface to form a resisting portion 18 and is recessed inwardly to form a lower receiving groove 14 having a width larger than the channel 10, and a bottom blocking surface 16 is formed at the bottom of the inner wall of the lower receiving groove 14. When the operator hits the object with the anti-shock tool, the force applied to the target and the corresponding reaction force are generated, and the operator's hand can abut the disk 17 and the abutting portion 18 to avoid the aforementioned The force is used to release the shockproof hand tool from the hand.

The rod body 2 is made of metal and penetrates the grip sleeve 1. The rod body 2 has a diameter slightly smaller than the passage 10, and the rod body can thus slide in the passage 10 relative to the grip sleeve 1; the rod body 2 has An upper portion 21 protruding from the bottom of the upper receiving groove 13 , a lower portion 22 protruding from the bottom of the lower receiving groove 14 , an upper blocking portion 25 fixed to the circumferential surface of the upper portion of the rod body, and a fixed portion of the rod a lower end portion 26 of the lower surface of the lower portion of the body, the end portion of the lower portion 22 extending to form a tapered tapered chisel portion 5, the upper blocking portion 25 and the lower portion 26 being a two-ring metal sheet in this embodiment and protruding from The upper surface of the shank 2 and the lower dam portion 26 are respectively located in the upper accommodating groove 13 and the lower accommodating groove 14.

The first compression spring 3 is sleeved on the upper portion 21 of the rod body 2, and one end of the first compression spring 3 abuts against the upper blocking surface 15, and the other end abuts against the upper blocking portion 25, the second compression The spring 4 is sleeved on the lower portion 22 of the rod body 2, and one end of the second compression spring 4 abuts against the lower blocking surface 16, and the other end abuts against the lower blocking portion 26.

Preferably, the upper portion 21 is flush with the slot of the upper receiving slot 13 and has an upper annular groove 23. The lower portion 22 has a lower annular groove 24 at a position flush with the lower receiving slot 14 slot. The blocking portion 25 and the lower blocking portion 26 are respectively fitted into the upper ring groove 23 and the lower ring groove 24, and the first compression spring 3 is restricted by the upper blocking portion 25 in the upper receiving groove 13, the second The compression spring 4 is also restrained by the lower stop portion 26 in the lower accommodating groove 14. Through the above arrangement, the first compression spring 3 and the second compression spring 4 are prevented from being exposed outside the grip sleeve 1, and the user operates. When the first compression spring 3 and the second compression spring 4 are pinched by the hand or the first compression spring 3 and the first The case where the two compression springs 4 are hooked by other objects to cause damage.

Preferably, the upper blocking surface 15 and the lower blocking surface 16 are respectively disposed with a gasket 6 and 7, and the first compression spring 3 and the second compression spring 4 abut against the two gaskets 6, 7 The gaskets 6 and 7 are made of a metal material, and the first compression spring 3 and the second compression spring 4 are provided with a reinforcing supporting force. Since the two gaskets 6 and 7 are rigid materials, the upper block of the rubber material can be avoided. The surface 15 and the lower stop surface 16 are subjected to long-term topping of the first compression spring 3 and the second compression spring 4 to cause deformation of the recess.

The third figure shows a partial enlarged view of a preferred embodiment of the shock-proof hand tool of the present invention. The upper blocking surface 15 and the spacer 6 block the first compression spring 3, and the upper receiving groove 13 has a width just larger than the width of the first compression spring 3, so that the first compression spring 3 can be in the upper blocking portion 25. And the spacer 6 is stretched and operated. The situation in the lower receiving groove 14 of the grip is as described above.

Compared with the prior art, the shockproof hand tool of the present invention can provide a double spring in the shockproof hand tool by the above configuration, and does not need to provide a closing cover to restrict the spring movement, so that the shock absorbing effect can be successfully achieved and the closed cover is solved. The problem of high tool failure rate.

The above description is only illustrative of the specific embodiments of the invention and is not intended to limit the scope of the invention. Equivalent changes and modifications made by those skilled in the art without departing from the spirit and scope of the invention are intended to be within the scope of the invention.

1‧‧‧ grip

10‧‧‧ channel

17‧‧‧ disc

18‧‧‧Parts

2‧‧‧ rod body

21‧‧‧上段

22‧‧‧ lower section

23‧‧‧Upper Ring Ditch

24‧‧‧ lower ring

25‧‧‧Upper

26‧‧‧ Lower dam

3‧‧‧First compression spring

4‧‧‧Second compression spring

5‧‧‧Chisel

Claims (3)

The utility model relates to a shock-proof hand tool, comprising: a grip sleeve having two opposite ends and a passage extending through the opposite ends; the two ends of the grip sleeve are respectively recessed inward to form an upper receiving groove and a lower receiving groove. The bottom of the inner wall of the upper receiving groove forms an upper blocking surface, and the bottom of the inner wall of the lower receiving groove forms a lower blocking surface; a rod body runs through the holding sleeve and can move relative to the holding sleeve; the rod body has a protrusion An upper portion of the bottom of the upper receiving groove, a lower portion protruding from the bottom of the lower receiving groove, an upper portion fixed to the upper surface of the upper portion of the rod body, and a lower peripheral surface fixed to the lower portion of the rod body a lower compression portion; a first compression spring is sleeved on the upper portion of the rod body, and one end of the first compression spring abuts against the upper blocking surface, the other end abuts against the upper blocking portion; and a second compression The spring is sleeved on the lower portion of the rod body, and one end of the second compression spring abuts against the lower blocking surface, and the other end abuts against the lower blocking portion. The anti-shock tool according to claim 1, wherein the upper blocking portion and the lower blocking portion are respectively located in the upper receiving groove and the lower receiving groove. The anti-shock tool according to claim 1, wherein a spacer is disposed on the upper surface and the lower surface.