TWI498192B - Ratchet wrench - Google Patents

Description

Ratchet wrench

The invention relates to a ratchet wrench.

The ratchet wrench of the prior art, as described in the TW M462646 patent, mainly has a ratchet portion formed on a wrench body, the ratchet portion is provided with an actuating opening and a round hole, and a ratchet groove is communicated therebetween, and a control member is extended from one end of the disc portion The handle body is formed with a block body at the other end, a U-shaped seat is formed at the top end of the block body, and a spring is disposed at the U-shaped seat, and a limit gap is recessed between the disk portion and the U-shaped seat. The part is installed at the round hole, and the U-shaped seat of the control member faces the ratchet groove. One ratchet member is formed with a curved tooth at one end, and the other end is provided with a limiting portion. The limiting portion protrudes with a cylinder, and the ratchet member The device is installed in the ratchet groove, the limiting portion is accommodated in the limiting notch, and the cylinder is pressed against the spring, and a rotating member is assembled at the operating opening of the wrench body and is meshed with the curved teeth of the ratchet member. , assembled into a ratchet wrench.

However, the structure of the ratchet wrench is complicated, and the burden on the production cost and the assembly is increased, resulting in high cost. Therefore, it is an object of the industry to provide a ratchet wrench with a simplified structure.

In view of the above problems, it is a primary object of the present invention to provide another ratchet wrench that is more compact.

To achieve the above object, the present invention provides a ratchet wrench including a body, a ratchet wheel, a control member, a card member and a fixing member.

The main body has a head and a handle. The head has a first surface, a second surface, a receiving hole, a receiving groove on the inner surface of the receiving hole, and an assembly hole. a hole is formed in the first surface and the second surface, the first surface is provided with the assembly hole, the receiving groove is communicated between the receiving hole and the assembly hole, and the assembly hole and the receiving hole are in the first A through hole is formed in a direction between the assembly hole and the receiving hole, and the through hole is formed to open through the first surface; the ratchet is rotatably disposed in the receiving hole, and the ratchet is The annular portion is provided with a first tooth portion on the outer peripheral surface; the control member is disposed on the first surface, the control member has an assembly portion and an elastic protrusion, and the assembly portion is rotatably inserted into the assembly hole, The elastic bump protrudes into the receiving groove. The latching member is movably disposed in the receiving slot, the latching member has a third surface and a fourth surface opposite to each other, and the third surface is provided with a second tooth portion for the first tooth portion to be abutted. The fourth surface is pushed by the elastic bump, and the locking member drives the latch member to move when the control member rotates; the fixing member is disposed on the through hole, and the fixing member abuts against the control member The assembly is held in the assembly hole.

Thereby, the control member is fixed to the body head by the fixing member, which simplifies the overall structure and provides a ratchet wrench which is more convenient to manufacture and assemble.

1‧‧‧ Ontology

11‧‧‧ head

111‧‧‧ first side

112‧‧‧ second side

113‧‧‧ accommodating holes

115‧‧‧ accommodating slots

116‧‧‧Assembled holes

118‧‧‧through hole

119‧‧‧Flange

12‧‧‧Handle

2‧‧‧ratchet

21‧‧‧First tooth

22‧‧‧Flexible ring

3‧‧‧Controls

31‧‧‧ Assembly Department

33‧‧‧ jack

34‧‧‧Block

351‧‧ ‧ spring

352‧‧‧Bumps

4‧‧‧ Cards

43‧‧‧ third side

44‧‧‧ fourth side

5‧‧‧Fixed parts

51‧‧‧Part 1

52‧‧‧Part II

521‧‧‧ convex

Figure 1 is an exploded view of the present invention.

Figure 2 is a partial enlarged view of the present invention.

Figure 3 is a partial perspective view of the present invention.

Figure 4 is a cross-sectional view of the present invention.

5 and 6 are schematic views showing the state of use of the present invention.

In the following, the structural features of the present invention and the intended effects thereof will be described in the preferred embodiments, and are not intended to limit the scope of the invention as claimed.

Referring to FIG. 1 to FIG. 4 , the ratchet wrench of the present invention comprises a body 1 , a ratchet wheel 2 , a control member 3 , a latching member 4 and a fixing member 5 .

The main body 1 has a head portion 11 and a handle 12 having a first surface 111, a second surface 112, a receiving hole 113, and a receiving groove on the inner surface of the receiving hole 113. And an assembly hole 116, the accommodating hole 113 is disposed through the first surface 111 and the second surface 112. The first surface 111 is provided with the assembly hole 116. The accommodating groove 115 communicates with the accommodating hole 113 and The through hole 118 is communicated between the assembly hole 116 and the receiving hole 113. The through hole 118 is also connected to the receiving hole 113. The through hole 118 is formed to be open and open on the first surface 111. The through hole 118 has a uniform width. The assembly hole 116 has a circular hole, and the inner diameter of the assembly hole 116 is larger than The width of the through hole 118. In addition, the head 11 is formed with a flange 119 adjacent to the inner surface of the first surface 11 of the receiving hole 113. The inner diameter of the flange 11 is smaller than the receiving hole 113.

The ratchet 2 is rotatably disposed in the accommodating hole 113. The ratchet 2 is substantially annular and has a first tooth portion 21 on the outer peripheral surface. The ratchet 2 is inserted into the accommodating hole 113 from the second surface. The elastic ring 22 is a C ring in this embodiment. The elastic ring 22 is abutting against the inner surface of the receiving hole 113 at the other end of the flange 119. .

The control unit 3 is disposed on the first surface 111. The control unit 3 has an assembly portion 31, a receptacle 33, a resilient bump and a baffle 34. The assembly portion 31 is rotatably inserted into the assembly hole. 116. The elastic protrusion includes a spring 351 and a protrusion 352. The spring 351 is disposed at the insertion hole 33. The protrusion 352 extends into the receiving groove 115. The blocking piece 34 is located on the first surface 111 and blocks the through hole 118.

The latching member 4 is movably disposed in the receiving slot 115. The latching member 4 has a third surface 43 and a fourth surface 44 opposite to each other. The third surface 43 is provided with a first tooth portion. The second tooth portion 44 is provided with a concave arc groove for the protrusion 352 to push. When the control member 3 rotates, the latch member 352 drives the latch member 4 to move, and the control ratchet 2 is controlled. For the purpose of reversing the switching, as shown in FIG. 5 and FIG. 6, when the latching member 4 is at different positions, the ratchet 2 can be rotated in a positive direction and a reverse direction.

The fixing member 5 is disposed in the through hole 118, and the fixing member 5 abuts against the control member 3 to hold the assembly portion 31 in the assembly hole 116; more specifically, the fixing member 5 is located in the blocking piece 34. The fixing member 5 has a first portion 51 and a second portion 52 having a larger width. The first portion 51 is located at one end of the adjacent flap 34, and the second portion 52 is located adjacent to the end of the latching member 4. The first portion 51 is movably inserted into the through hole 118. The second portion 52 is engaged with the receiving groove 115. The second portion 52 is located between the latching member 4 and the through hole 118. The two portions 52 have two convex portions 521 , and the two convex portions 521 are opposite to the two sides of the through hole 118 . The fixing member 5 cannot directly escape from the through hole 118 . The fixing member 5 can enter and exit the through hole 118 through the receiving hole 113. When the ratchet 2 is disposed in the receiving hole 113, the ratchet 2 blocks the fixing member 5 from entering and exiting the through hole 118.

Therefore, in the assembly, after the assembly portion 31 of the control member 3 is inserted into the assembly hole 116, the latching member 4 is inserted into the receiving groove 115, and then the fixing member 5 is inserted into the through hole 118 from the receiving hole 113, that is, The fixing of the control member 3 can be completed, and finally the ratchet 2 is loaded into the receiving hole 113 from the second surface to complete the assembly of the ratchet wrench.

The invention is characterized in that the control member 3 is fixed to the head 11 of the body 1 by the fixing member 5, which simplifies the overall structure and provides a ratchet wrench which is more convenient to manufacture and assemble.

Summarizing the above, the ratchet wrench of the present invention not only has a structural innovation, but also has a progressive effect, and complies with the relevant provisions of the Patent Law, and filed a patent application according to law, and the Office of the State Council has approved the patent as soon as possible.

1‧‧‧ Ontology

11‧‧‧ head

111‧‧‧ first side

113‧‧‧ accommodating holes

115‧‧‧ accommodating slots

116‧‧‧Assembled holes

118‧‧‧through hole

119‧‧‧Flange

12‧‧‧Handle

2‧‧‧ratchet

21‧‧‧First tooth

22‧‧‧Flexible ring

3‧‧‧Controls

31‧‧‧ Assembly Department

33‧‧‧ jack

34‧‧‧Block

351‧‧ ‧ spring

352‧‧‧Bumps

4‧‧‧ Cards

43‧‧‧ third side

44‧‧‧ fourth side

5‧‧‧Fixed parts

51‧‧‧Part 1

52‧‧‧Part II

521‧‧‧ convex

Claims (8)

A ratchet wrench includes: a body having a head and a handle, the head having a first surface, a second surface, a receiving hole, a receiving groove on the inner surface of the receiving hole, and An assembly hole is formed through the first surface and the second surface, the first surface is provided with the assembly hole, and the accommodating groove is communicated between the accommodating hole and the assembly hole, and the assembly hole is The receiving hole communicates with each other on the first surface, and the through hole communicates with the receiving hole through a through hole, the through hole is formed to open through the first surface; a ratchet is rotatably disposed on the first hole The accommodating hole is annular and has a first tooth portion on the outer peripheral surface; a control member is disposed on the first surface, the control member has an assembly portion and an elastic protrusion, and the assembly portion can be Rotatingly inserting into the assembly hole, the elastic protrusion extends into the receiving groove; a latching member is movably disposed in the receiving slot, the latching member having a third surface and a fourth The second surface is provided with a second tooth portion for the first tooth portion to be abutted, and the fourth surface is for the elastic protrusion to be pushed, and the control member is rotated by The elastic bump drives the latch member to move; a fixing member is disposed on the through hole, the fixing member has a first portion and a second portion having a larger width, and the first portion movably extends into the through hole. The second portion of the card is abutted against the receiving groove, and the fixing member abuts against the control member to keep the assembly portion in the assembly hole. The ratchet wrench of claim 1, wherein the control member has a blocking piece, the blocking piece being located on the first surface and shielding the through hole. The ratchet wrench of claim 2, wherein the fixing member is located between the blocking piece and the latching member. The ratchet wrench of claim 1, wherein the second portion has two convex portions, the two convex portions are provided The card is adjacent to the two sides of the through hole, and the fixing member cannot directly escape from the through hole. The ratchet wrench of claim 1, wherein the second portion is located between the latch member and the through hole. The ratchet wrench of claim 1, wherein the assembly hole is a circular hole, and an inner diameter of the assembly hole is larger than a width of the through hole. The ratchet wrench of claim 1, wherein the fixing member can enter and exit the through hole through the receiving hole, and the ratchet blocks the fixing member from entering and exiting the through hole when the ratchet is disposed in the receiving hole. The ratchet wrench of claim 1, wherein the head is formed with a flange on an inner surface of the receiving hole adjacent to the first surface, the inner diameter of the flange is smaller than the receiving hole, and the ratchet is loaded from the second surface The receiving hole abuts against the flange, and the ratchet is provided with an elastic ring at the other end of the flange to be engaged with the inner surface of the receiving hole.