TWI515089B - Impact hand tool - Google Patents

Description

Impact hand tool

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a hand tool, and more particularly to a hand tool that can be used to unscrew or tighten a screw or nut by means of impact vibration.

For the conventional impact hand tool, please refer to the "Improved Impactor Structure Improvement" of the Chinese Patent No. M426473, or as shown in Fig. 1, the impact driver is used to assist the screw that the general screwdriver cannot be screwed up. The gripper 10 of the conventional impactor has an axial receiving groove 11 for receiving an elastic member 12 and a tool head 13, and a small diameter portion 101 is formed on the grip 10 A bushing 14 is disposed at a position, and a periphery of the grip 10 is provided with a pin hole 102 extending through the accommodating groove 11. The outer periphery of the tool head 13 is provided with a radial insertion hole 15 for inserting The hole 15 has a first position 151 and a second position 152. The tool head 13 is pressed against the elastic member 12 and penetrates through the pin hole 16 and the insertion hole 15 through a pin 16 .

In use, a screwdriver is attached to the end of the tool head 13 to align the screw that is difficult to unscrew, and the user holds the grip 10 with one hand and the top of the grip 10 with the other hand. When the grip 10 is subjected to the force, the screwdriver head is pressed against the screw and a reaction force is applied to the elastic member 12, whereby the bolt 16 is displaced along the insertion hole 15 to cause the tool head to be generated. Rotate slightly and gradually unscrew the screw.

However, the conventional impact screwdriver is slightly unscrewed after the screw It is difficult for the impact driver to rotate in the axial direction like a general screwdriver, so the user still has to change back to the general screwdriver, which is quite inconvenient to use.

In view of this, the inventors have conceived and further studied and finally invented an impact hand tool.

The invention provides an impact hand tool, the main purpose of which is to allow the user to use the impact hand tool to slightly unscrew the screw or the nut without replacing the ordinary screwdriver, and can continue to operate directly with the impact hand tool. Screw or nut that is too tight or has a nut to be screwed out.

In order to achieve the above objective, the present invention provides an impact hand tool, comprising: a handle having a striking end and a connecting end, the handle having a receiving groove therein, the receiving groove having a receiving end at the connecting end An opening is formed on the side wall of the accommodating groove; an elastic member is received in the accommodating groove; and an actuating member has a rod-shaped structure, and the actuating member is sequentially divided into a plugging section, a buffering section, an externally threaded part and a working section, the guiding section is formed with a guiding groove, the insertion section is received in the receiving groove, and the end is abutted against the elasticity The positioning block of the handle is received in the guiding groove, and the threaded portion and the working portion of the actuating member protrude from the opening of the handle, and the end of the working portion has a tool joint And a weight limit block with a screw inside a threaded passage, the weight limiting block is screwed to the threaded portion of the actuating member, and the weight limiting block is relative to the actuating member while the weight limiting block is rotated relative to the actuating member Displacement; wherein the length of the weight limiting block in the axial direction is greater than the length of the buffer segment of the actuator in the axial direction.

The present invention utilizes the provided impact hand tool to obtain work The utility model has an external threaded portion on the actuating member, and a buffering portion between the threaded portion of the actuating member and the inserting portion of the actuating member, wherein the external threaded portion is screwed with a weight limiting block. The weight limiting block screw is disposed on the actuating member, and when the buffering segment is not completely covered, the actuating member is freely displaceable and vibrated and rotated relative to the gripper, and can be used as an impact hand tool; If the weight limiting block completely covers the buffer section, the actuator cannot be displaced and rotated relative to the grip up and down, and can be used as a screwdriver.

The technology, hand used in connection with the present invention to achieve the above object For the purpose of the paragraphs and other functions, a preferred embodiment is described in detail with reference to the drawings.

[study]

10‧‧‧ grip

101‧‧‧Little Trails Department

102‧‧‧ pinhole

11‧‧‧ accommodating slots

12‧‧‧Flexible components

13‧‧‧Tool head

14‧‧‧ bushing

15‧‧‧ jack

151‧‧‧ first position

152‧‧‧second position

16‧‧‧Latch

〔this invention〕

20‧‧‧Handle

201‧‧‧Beat end

202‧‧‧Connected end

21‧‧‧ 容 容

22‧‧‧ sleeve

221‧‧‧ sheath

23‧‧‧ accommodating slots

231‧‧‧ openings

24‧‧‧ Positioning block

25‧‧‧ wall hole

251‧‧‧ first opening

252‧‧‧ second opening

26‧‧‧Bolts

27‧‧‧Flexible parts

30‧‧‧Operator

31‧‧‧Docking section

311‧‧‧ guiding slot

32‧‧‧Buffer segment

33‧‧‧External thread

34‧‧‧Working section

341‧‧‧Tools Joint

35‧‧‧weight limit block

351‧‧‧Threaded channel

71‧‧‧ screwdriver head

Figure 1 is an exploded perspective view of a conventional impact hand tool.

Figure 2 is a perspective exploded view of an embodiment of the present invention.

Fig. 3 is a view showing a state of use of an embodiment of the present invention.

Figure 4 is a partial enlarged view of an embodiment of the present invention.

Figure 5 is a schematic view of the handle after impact on the handle.

Fig. 6 is a schematic view showing the screwing of the weight limiting block in Fig. 4.

Figure 7 is a reference view of the state of use after the weight limit block is tightened in the embodiment of the present invention.

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.

In order to enable the reviewing committee to have a better understanding and understanding of the purpose, features and functions of the present invention, the following is a detailed description of the following: a preferred embodiment of the impact hand tool of the present invention, for example, FIG. As shown in FIG. 4 , the impact hand tool includes a handle 20 , an elastic member 27 , an actuating member 30 , and a weight limiting block 35 . The grip 20 is received by a receiving member 21 . The sleeve 20 is fixed to the sleeve 22 through a hosel 221. The handle 20 has a striking end 201 and a connecting end 202. The handle 20 has an internal portion. An accommodating groove 23 is formed in the accommodating member 21, and the accommodating groove 23 has an opening 231 at the connecting end 202. The handle 20 is on the side wall of the accommodating groove 23. A positioning block 24 is fixedly disposed; in more detail, a wall hole 25 is defined in a sidewall of the receiving groove 23, and the wall hole 25 has a cylindrical shape, and the wall hole 25 is defined inside the receiving member 21 and The opening of the outer side is a first opening 251 and a second opening 252, wherein the diameter of the first opening 251 is smaller than the diameter of the second opening 252 The diameter of the hole and the length of the wall hole 25, the positioning block 24 is a ball and is accommodated in the wall hole 25, and the radial direction of the positioning block 24 The length is greater than the first opening 251 and smaller than the second opening 252, and the second opening is closed by a bolt 26, so that the positioning block 24 is fixed in the wall hole 25; the elastic member 27 is accommodated. In the accommodating groove 23, the actuating member 30 has a rod-like structure, and the actuating member 30 is sequentially divided into a plug portion 31, a buffer portion 32, an external thread portion 33 and a working portion 34. The insertion portion 31 is formed with a guiding groove 311. The insertion portion 31 is received in the accommodating groove 23. The actuating member 30 abuts against the elastic member 27 at the end of the insertion portion 31. The positioning block 24 of the handle 20 is received in the guiding groove 311. The external threaded portion 33 of the actuating member 30 and the working portion 34 protrude from the opening 231 of the handle 20, and the working portion 34 The end of the shaft has a tool coupling portion 341, and the tool coupling portion 341 is coupled to the driver head portion 71. The external thread portion 33 is formed on the actuator member 30, and the external thread portion 33 and the buffer portion 32 are axially oriented. The length is smaller than the length of the weight limiting block 35 in the axial direction; and the weight limiting block 35 is internally provided with an internally threaded passage 351, and the weight limiting block 35 is The internal thread passage 351 is screwed to the external thread portion 33 of the actuating member 30. When the weight limiting block 35 rotates relative to the actuating member 30, the weight limiting block 35 is axially oriented with respect to the actuating member 30. Displacement; wherein the length of the weight limiting block 35 in the axial direction is greater than the length of the buffer section 32 of the actuator 30 in the axial direction.

The above description is the main components of the embodiment of the present invention and their configuration description. For the usage and function of the embodiments of the present invention, please refer to FIG. 4 and 5 is a schematic view of the present invention, which is mainly applied to a screw or a nut which is difficult to be unscrewed, and is used in conjunction with the tool joint portion 341 to join the sub-head 71 or a sleeve, and The screwdriver head 71 or the sleeve is aligned with a screw or nut that is difficult to unscrew, and the user holds the grip 20 with one hand and strikes the striking end 201 of the grip 20 with another hand-held weight, as a result of the reaction force The actuating member 30 is vertically displaced in the handle 20, and the buffer portion 32 is used as a displacement space to allow the buffer portion 32 to reciprocate into and out of the accommodating groove 23 of the handle 20, and The engagement of the positioning block 24 in the accommodating groove 23 and the guiding groove 311 of the actuating member 30 causes the actuator 30 to rotate slightly, thereby gradually unscrewing the screw or the nut. Wherein, since the guiding groove 311 is only a single-direction groove body, instead of the conventional V-shaped groove, the actuating member 30 is only clockwise and during one vertical displacement of the actuating member 30. Rotate counterclockwise each time to increase the efficiency of the work.

It is worth mentioning that please refer to Figure 4, Figure 6 and Figure 7. As shown in Figures 2 to 3, when the screw or nut is slightly unscrewed, the user only needs to screw the weight limiting block 35 into the buffer section 32, so that the weight limiting block 35 is completely Covering the buffer section 32, and the weight limiting block 35 is in close contact with the handle. At this time, since the actuating member 30 has no space for displacement, the actuating member 30 is fixed without displacement and rotation. The user can use the impact hand tool of the present invention as a screwdriver.

From the above, it is known that the present invention truly conforms to "industry availability," "novelty," and "progressiveness", and submits an invention patent application in accordance with the law. Thanks for reviewing and granting patents as soon as possible.

20‧‧‧Handle

201‧‧‧Beat end

202‧‧‧Connected end

21‧‧‧ 容 容

22‧‧‧ sleeve

221‧‧‧ sheath

23‧‧‧ accommodating slots

231‧‧‧ openings

24‧‧‧ Positioning block

25‧‧‧ wall hole

251‧‧‧ first opening

252‧‧‧ second opening

26‧‧‧Bolts

27‧‧‧Flexible parts

30‧‧‧Operator

31‧‧‧Docking section

311‧‧‧ guiding slot

32‧‧‧Buffer segment

33‧‧‧External thread

34‧‧‧Working section

341‧‧‧Tools Joint

35‧‧‧weight limit block

351‧‧‧Threaded channel

Claims (5)

An impact hand tool includes: a handle having a striking end and a connecting end, the handle having a receiving groove therein, the receiving groove having an opening at the connecting end, the handle being in the capacity A positioning block is fixed on the side wall of the slot; an elastic member is received in the receiving groove; and an actuating member has a rod-like structure, and the actuating member is sequentially divided into a plug segment and a buffer segment. An externally threaded portion and a working section are formed with a guiding groove formed in the receiving groove, and the end portion abuts against the elastic member, and the positioning block of the handle The threaded portion is disposed in the guiding groove, and the threaded portion and the working portion of the actuating member protrude from the opening of the handle, the working portion has a tool joint at the end; and a weight limiting block. An internal threaded passage is disposed therein, and the weight limiting block is screwed on the threaded portion of the actuating member, and the weight limiting block is opposite to the rotating member when the weight limiting block rotates relative to the actuating member Displacement of the actuator; wherein the length of the weight limiting block in the axial direction is greater than Buffer segment of the movable member in the axial direction of length. The impact hand tool of claim 1, wherein the handle is formed by a receiving member that is received in a sleeve, and the receiving groove is formed in the receiving member. The impact hand tool of claim 2, wherein the side wall of the accommodating groove defines a wall hole, the wall hole has a cylindrical shape, and the wall hole is defined inside and outside the accommodating member. The opening is a first opening and a second opening The opening, wherein the diameter of the first opening is smaller than the diameter of the second opening and the radial direction of the wall hole, the positioning block is received in the wall hole, and the length of the positioning block in the radial direction is greater than the diameter The first opening is smaller than the second opening, and the second opening is closed by a bolt to fix the positioning block in the wall hole. The impact hand tool of claim 3, wherein the positioning block is a ball. The impact hand tool according to claim 1, wherein the external thread portion is formed on the actuator, and the length of the external thread portion and the buffer portion in the axial direction is limited to the weight. The length of the block in the axial direction is small.