TWI750959B - Limiting structure of ratchet wrench - Google Patents

Abstract

The present invention is a limiting structure of a ratchet wrench, which includes; a body with a connecting groove, an end surface of the connecting groove is provided with a limiting groove, and a limiting side portion is respectively provided on both sides of the limiting groove; a reversing piece installed in the connecting groove, the end surface of the reversing piece and protruding with a block, the block is accommodated in the limiting slot, and between the two limiting sides displacement, the connecting groove and the limiting groove are processed on the same processing plane, so that the main body can reduce the processing procedures. In addition, the limiting groove is provided in the main body, so that the operation of the reversing member will not be affected.

Description

Limiting structure of ratchet wrench

The present invention relates to a hand tool, in particular to a limit structure of a ratchet wrench which can reduce the processing steps.

Press, ratchet wrench is a hand tool that is often used to turn screws (bolts or nuts) or sockets, and can rotate screws at a small angle. As shown in FIG. 1, a conventional ratchet wrench 10 is provided, which includes a tool body 11, a ratchet structure 12 and a reversing member 13, and the ratchet structure 12 and the reversing member 13 are accommodated in the tool body 11, the ratchet structure 12 can switch the direction of force through the reversing member 13, and the reversing member 13 is provided with a lever 131 outside the tool body 11 for the user to switch. In order to limit the switching position of the lever 131, the tool body 11 is provided with a limiting slot 111 at the position of the lever 131, and the limiting slot 111 restricts the switching position of the lever 131. When the rod 131 is in contact with the side of the limiting groove 111 , it can be known that the lever 131 has reached the position.

However, in the conventional ratchet wrench 10, the tool body 11 of the tool body 11 is not easy to process in order to be able to withstand greater working strength and has strong rigidity. The ratchet structure accommodates, the limit groove 111 is set on the other side, it needs to be turned over again, and it needs to be repositioned and clamped. It is relatively complicated to hold, and the construction is relatively complicated. Furthermore, when the lever 131 is close to the position of the limiting groove 111 , the height of the lever 131 will be partially covered by the limiting groove 111 , which is relatively exposed to the tool body 11 . The height will decrease, and the user will be affected when he finds the position of the lever 131 or moves the lever 131 , and cannot move the lever 131 smoothly.

The present invention provides a position-limiting structure for a ratchet wrench, comprising: a main body with a receiving groove, an arc groove and a connecting groove, the arc groove is connected between the connecting groove and the receiving groove, and the receiving groove is The groove is communicated with the arc groove and the connecting groove. The end surface of the connecting groove is also provided with a limiting groove, and the two sides of the limiting groove are respectively provided with a limiting side part; a ratchet has a working part in the center, which is pivoted Set in the accommodating groove, the ratchet wheel is provided with a ratchet tooth portion on the outer peripheral ring, and the ratchet wheel can rotate with its working part as the center in the accommodating groove; a latching piece is accommodated in the arc groove, and its front end The surface is provided with a latching tooth portion that engages with the ratchet tooth portion of the ratchet, and a reversing slot is arranged at the rear end; The front end is provided with a set of connecting parts opposite to the reversing slot at the rear end of the latching piece, the end face of the reversing piece is protruded with a latching block, the latching block is accommodated in the limiting slot, and is located between the two The displacement between the limiting side parts; a toggle piece has a top holding part and an elastic piece; the toggle piece is accommodated in the assembly part and is in elastic contact with the reversing groove at the rear end of the latching piece.

In the limiting structure of the ratchet wrench provided by the present invention, the block of the reversing member can be restricted by the limiting groove, and the rotation position of the reversing member can be restricted, resulting in A positioning effect is produced; in addition, the limit groove and the connecting groove are processed on the same processing plane, which can be processed in the same processing program, reducing the time required for face-changing processing and reducing processing errors; in addition, the The limit groove will be disposed on the inner side surface of the body after processing, and the reversing member will not be affected during external switching, and is easy to operate.

10: Ratchet wrench

11: Tool body

111: Limit slot

12: Ratchet structure

13: Reversing piece

131: lever

20: Ratchet Wrench

30: Ontology

31: Container

32: Arc groove

33: Slots

331: Perforation

332: Ring groove

34: Limit slot

341: Limit side

40: Ratchet

41: Work Department

42: Ratchet

50: Clips

51: Card teeth

52: Arc face

53: Reversing slot

60: Reversing piece

61: Assembly Department

611: Groove

62: Abutment

63: Card block

64: Positioning pieces

65: toggle lever

66: Positioning bumps

70: toggle

71: Top Holder

72: Elastic

80: cover plate

81: Through hole

82: Positioning hole

D: gap

Figure 1 is a three-dimensional external view of a conventional ratchet wrench.

FIG. 2 is a three-dimensional external view of a ratchet wrench according to a preferred embodiment of the present invention.

Figure 3 is an exploded view of the external appearance of the ratchet wrench.

Figure 4 is an exploded view of the other side of the ratchet wrench.

Fig. 5 is an external view of the combination of the limiting groove of the ratchet wrench and the block of the reversing member.

Figure 6 is a schematic diagram of the depressing of the latching member when the ratchet wrench is idling.

FIG. 7 is a schematic diagram of the combination of the ring groove at the bottom of the receiving groove of the ratchet wrench and the positioning protrusion of the reversing member.

Figure 8 is a schematic vertical cross-sectional view of the ratchet wrench.

Please refer to FIGS. 2 to 6, which is a ratchet wrench 20 provided by a preferred embodiment of the present invention, including:

A main body 30 is recessed with a receiving groove 31 , an arc groove 32 and a connecting groove 33 in sequence. The arc groove 32 is formed between the connecting groove 33 and the receiving groove 31 , and the receiving groove 31 communicates with the arc groove 32 and the connecting groove 33. The connecting groove 33 is far away from the end face of the arc groove 32 and is provided with a limiting groove 34. The left and right side walls of the limiting groove 34 respectively form a limiting side portion 341 ; The bottom of the connecting groove 33 is provided with a through hole 331, and the circumference of the through hole 331 is concave with a ring groove 332 coaxially.

A ratchet wheel 40 has a working part 41 in the center, which is pivoted in the accommodating groove 31 , and a ratchet tooth part 42 is provided on the outer peripheral ring of the ratchet wheel 40 , and the ratchet wheel 40 can use its working part in the accommodating groove 31 41 is the center of rotation.

A latching member 50 is accommodated in the arc groove 32 , a latching tooth portion 51 is disposed on the front end surface to engage with the ratchet tooth portion 42 of the ratchet wheel 40 , and an arc surface portion 52 is disposed at the rear end. The center of the arc surface portion 52 is And a reversing groove 53 is recessed.

A reversing member 60 is installed in the connecting slot 33 and located at the rear side of the latching member 50 . The front end of the reversing member 60 is provided with a set of connecting portions 61 and a reversing slot at the rear end of the latching member 50 . 53 Opposite, the assembling portion 61 is a groove 611, and a contact portion 62 is formed on both sides of the assembling portion 61, and a locking block 63 is protruded on the rear side of the top end face of the reversing member. The block 63 is accommodated in the limiting groove 34 and is displaced between the two limiting side portions 341 ; the reversing member 60 is provided with a positioning member 64 on the top end face, which is a sphere and a spring. The bottom end of the reversing member 60 is provided with a toggle lever 65, and the toggle lever 65 passes through the through hole 331 and is located on the outside of the main body 30. Please refer to Figs. 6 and 8 for the reversing member 60. A positioning protrusion 66 is protruded from the bottom end. The positioning protrusion 66 is disposed in the annular groove 332 so that the rotation position of the reversing member 60 can be restricted.

A toggle member 70 has a top holding portion 71 and an elastic member 72 ; the toggle member 70 is accommodated in the groove 611 of the assembly portion 61 and is connected to the reversing groove at the rear end of the latching member 50 53 elastic contact.

A cover plate 80 is provided with a through hole 81 and two positioning holes 82 therethrough; the cover plate 80 is covered on the top of the main body 30 so that the accommodating groove 31 , the arc groove 32 and the connecting groove 33 can be covered The working part 41 of the ratchet 40 passes through the through hole 81; the positioning member 64 on the top end surface of the reversing member 60 can be positioned in the positioning holes 82, which can produce a positioning effect.

During operation, please refer to FIGS. 5 and 7 , when the ratchet wrench 20 is operated, the direction of the reversing member 60 can be adjusted by turning the turning lever 65 from the outside of the main body 30 , because the locking block 63 will The position is changed in the limiting groove 34, and is limited by the limiting side portion 341, when the blocking block 63 abuts any of the limiting side portions 341, the positioning member 64 will also be located in one of the positioning holes. 82, so that the user can no longer move the toggle lever 65, and the switching of the operating direction can be completed, because the limiting slot 34 is arranged in the accommodating slot 31, the connecting slot 33 and the arc slot 32. Since they are on the same processing plane, they can be processed at the same time, which can reduce the process of processing the limit groove 34, and the limit groove 34 will be covered by the cover plate 80, so it will not be exposed to the outside. When the moving rod 65 operates outside the body 30, it will not be affected by any protrusions, and it is easy to switch directions.

After the reversing member 60 is positioned, the abutting portion 62 will be close to the position of the arc surface portion 52 of the latching member 50 , and the gap D between the two is approximately the height of the teeth of the latching tooth portion 51 . 1~1.2, therefore, please refer to Fig. 7, when the ratchet 40 is about to rotate in the opposite direction of the force application, the ratchet 40 will press against the latching member 50, so that the latching member 50 will move toward the reversing member 60 direction, and press the toggle member 70, so that the elastic member 72 of the toggle member 70 will be compressed. At this time, because the gap between the contact portion 62 and the arc surface portion 52 is not large, the latch The pressing distance of the member 50 will be limited, only the height of one tooth height and cannot be pressed down. At this time, when the ratchet portion 42 of the ratchet wheel 40 rotates by one tooth, the toggle member 70 can immediately The latching member 50 is pushed toward the ratchet wheel 40, so that the idling angle of the ratchet wheel 40 can be ensured, and one tooth can be idling at a time, so as to prevent the latching member 50 from being excessively squeezed in the direction of the reversing member 60, and the Avoid too large idling angle, which will affect the operation performance.

In the ratchet wrench provided by the present invention, the limiting groove provided on the body can reduce the processing process, improve the efficiency, and can make the operating part of the reversing piece subject to external influences, and at the same time, through the abutting part of the reversing piece The depressing distance of the catch can be limited, and the idling angle of the ratchet can be ensured, so that it can ensure the accuracy of operation in a narrow space.

The above-mentioned embodiments are only intended to illustrate the technical means of the present invention and not to limit it, and all equivalent modifications of the present invention should be regarded as the protection scope of the present invention. The hand tool of the present invention has the first structure in this field, and has the enhancement of practical effect, and the application is filed in accordance with the law.

30: Ontology

31: Container

32: Arc groove

33: Slots

332: Ring groove

34: Limit slot

341: Limit side

40: Ratchet

41: Work Department

42: Ratchet

50: Clips

51: Card teeth

52: Arc face

53: Reversing slot

60: Reversing piece

61: Assembly Department

62: Abutment

63: Card block

64: Positioning pieces

66: Positioning bumps

70: toggle

71: Top Holder

D: gap

Claims (4)

A limit structure of a torque wrench, comprising: a body, which is provided with a receiving groove, an arc groove and a connecting groove, the arc groove is set between the connecting groove and the receiving groove, and the receiving groove is connected with the arc groove. The groove communicates with the connecting groove, the end face of the connecting groove is also provided with a limiting groove, and the left and right side walls of the limiting groove respectively form a limiting side part; a ratchet has a working part in the center, which is pivoted at the In the accommodating groove, a ratchet tooth portion is provided on the outer peripheral ring of the ratchet wheel, and the ratchet wheel can rotate with its working part as the center in the accommodating groove; A latching tooth part is engaged with the ratchet tooth part of the ratchet, and a reversing slot is arranged at the rear end; There is a set of connecting parts opposite to the reversing slot at the rear end of the latching piece, and a latching block is protruded on the end face of the reversing piece. displacement between the side parts; a toggle piece with a top holding part and an elastic piece; the toggle piece is accommodated in the assembly part and elastically contacts with the reversing groove at the rear end of the latching piece; a cover plate, the cover plate is provided with a through hole and two positioning holes; the cover plate is covered on the accommodating groove, the arc groove and the connecting groove; the working part of the ratchet passes through the through hole; the A positioning member is provided on the end face of the commutation member, and the positioning member can be positioned in the positioning holes. The limiting structure of the torque wrench as claimed in claim 1, wherein the limiting groove is arranged on the rear end face of the connecting groove. The limiting structure of the torque wrench according to claim 1, wherein a through hole is formed through the bottom of the connecting groove, and a toggle rod is arranged on the reversing member to pass through the through hole and located outside the body. The limiting structure of a torque wrench as claimed in claim 3, wherein a ring groove is concavely formed on the periphery of the perforated ring, and a positioning protrusion is relatively convexly formed on the reversing member, and the positioning protrusion can be located in the ring groove turn.

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