TWI807612B - Ratchet wrench - Google Patents

Abstract

A ratchet wrench includes a main body, a rotating seat, two first ratchet blocks, two second ratchet blocks, an adjusting assembly and a fixing member. The main body includes an accommodating hole and a mandrel. One end of the rotating seat disposed with a driving head. The rotating seat is rotatably disposed in the accommodating hole along a first axial direction. The mandrel is rotatable along a second axial direction which is transverse to the first axial direction. A blocking portion is disposed with one end of the rotating seat. The two first ratchet blocks and the two second ratchet blocks are rotatably disposed on the rotating seat. The adjusting assembly is rotatably disposed on the rotating seat. The fixing member is detachably assembled to the rotating seat. The blocking portion and the fixing member are clamped against the main body.

Description

ratchet wrench

The invention relates to a ratchet wrench.

Press, generally when performing locking operations, hand tools are used to lock the locking pieces to achieve labor-saving effects. In addition, in order to increase practicality, there is a ratchet wrench with a ratchet function on the market, so that the driving head can have the function of one-way idling.

However, because the internal structure of this type of ratchet wrench is relatively complicated, the failure rate is relatively high, and there are disadvantages that need to be improved urgently.

Therefore, it is necessary to provide a novel and progressive ratchet wrench to solve the above-mentioned problems.

The main purpose of the present invention is to provide a ratchet wrench which can be easily disassembled for maintenance or repair.

To achieve the above object, the present invention provides a ratchet wrench, which includes a body, a rotating seat, two first ratchet blocks, two second ratchet blocks, an adjustment assembly and a fixing piece. The body includes a cavity and a spindle, the cavity is provided with a first inner ring tooth, and the spindle is provided with a first outer ring tooth. the turn One end of the seat is provided with a driving head, the rotating seat is arranged in the receiving hole so as to rotate around a first axis, the mandrel rotates around a second axial direction transverse to the first axis, the rotating seat is further provided with two second inner ring teeth and two helical ring teeth, the end of the rotating seat far away from the driving head is provided with a stopper, and the two helical ring teeth mesh with the first outer ring teeth. The two first ratchet blocks are symmetrically pivoted on both sides of the rotating base and abut against the first inner ring teeth. The two second ratchet blocks are pivotally arranged on the rotating seat and are respectively located at two ends of the two first ratchet blocks along the first axial direction, and the two second ratchet blocks respectively abut against the two second inner ring teeth. The adjustment assembly is rotatably arranged on the rotating seat, and is provided with two first elastic elements and two second elastic elements. The fixing part is detachably installed on the end of the rotating seat opposite to the stop part, so that the stop part and the fixing part are clamped against the body; wherein, the end of the turn seat far away from the stop part is provided with a flange, the outer diameter of the flange is smaller than the minimum inner diameter of the hole, and a housing part is formed between the flange and the stop part. The connecting portion is connected between the blocking portion and the flange.

1: Ontology

11: Hole

12: mandrel

13: The first inner ring tooth

14: The first outer ring tooth

15: Inner convex ring

2: rotating seat

21: Drive head

22: Second inner ring tooth

23: oblique ring teeth

24: block

26: Collar

27: Flange

271: ring groove

272A: external thread part

28:Accommodating Department

3: The first ratchet block

4: Second ratchet block

5: Adjust components

51: The first bullet arrives

52: The second bounce piece

53: Swivel cover

54: Adjustment parts

55: return spring

6,6A:Fixer

61: perforation

62A: Internal thread part

L1: first axis

L2: second axis

Fig. 1 is a perspective view of a preferred embodiment of the present invention.

2 and 3 are exploded views of a preferred embodiment of the present invention.

Fig. 4 is a side sectional view of a preferred embodiment of the present invention.

Fig. 5 is a top sectional view of a preferred embodiment of the present invention.

Fig. 6 is another top sectional view of a preferred embodiment of the present invention.

Fig. 7 is a perspective view of a preferred embodiment of the present invention.

Fig. 8 is an exploded view of a preferred embodiment of the present invention.

Fig. 9 is a side sectional view of a preferred embodiment of the present invention.

The following examples illustrate possible implementations of the present invention, but are not intended to limit the scope of protection of the present invention.

Please refer to Figures 1 to 6, which show a preferred embodiment of the present invention. The ratchet wrench of the present invention includes a body 1, a rotating seat 2, two first ratchet blocks 3, two second ratchet blocks 4, an adjustment assembly 5 and a fixing member 6.

The body 1 includes a receiving hole 11 and a spindle 12 , the receiving hole 11 is provided with a first inner ring tooth 13 , and the spindle 12 is provided with a first outer ring tooth 14 .

One end of the rotating base 2 is provided with a drive head 21, the rotating base 2 is arranged in the receiving hole 11 to rotate around a first axis L1, the mandrel 12 rotates around a second axis L2 transverse to the first axis L1 (i.e. the extension direction of the handle of the body), the rotating base 2 is further provided with two second inner ring teeth 22 and two oblique ring teeth 23, and the end of the rotating base 2 away from the driving head 21 is provided with a retaining portion 24, and the two oblique ring teeth 23 are engaged with the first outer ring teeth 14. The driving head 21 is used to be assembled with a locking tool (such as a bolt or a sleeve).

The two first ratchet blocks 3 are symmetrically pivoted on two sides of the rotating base 2 and abut against the first inner ring teeth 13 .

The two second ratchet blocks 4 are pivotally mounted on the rotating base 2 and are respectively located at two ends of the two first ratchet blocks 3 along the first axis L1 , and the two second ratchet blocks 4 respectively abut against the two second inner ring teeth 22 .

The adjustment assembly 5 is rotatably arranged on the rotating seat 2, and is provided with two first elastic members 51 and two second elastic members 52. The first elastic members 51 protrude from two sides in the radial direction of the adjustment assembly 5 and spring against the two first ratchet blocks 3, and the two second elastic members 52 respectively spring against the two second ratchet blocks 4.

Wherein, the rotating seat 2 is provided with a flange 27 at the end away from the stop portion 24. The outer diameter of the flange 27 is smaller than the minimum inner diameter of the receiving hole 11, so as to prevent the flange 27 from interfering with the hole wall of the receiving hole 11 along the first axial direction L1. A housing portion 28 is formed between the flange 27 and the blocking portion 24. The two first ratchet blocks 3 and the two second ratchet blocks 4 are pivotally mounted on the receiving portion 28, and the fixing member 6 is detachably arranged on the protrusion. The rim 27 ; the rotating base 2 further includes a connecting portion, the connecting portion is connected between the blocking portion 24 and the flange 27 .

Therefore, when the adjustment assembly 5 is rotated, the two first resilient members 51 and the two second resilient members 52 can be controlled to drive the two first ratchet blocks 3 and the two second ratchet blocks 4 to swing. To control the direction in which the drive head 21 rotates relative to the rotating spindle.

The fixing part 6 is detachably mounted on an end of the rotating base 2 opposite to the blocking part 24 , so that the blocking part 24 and the fixing part 6 are clamped against the main body 1 . In this embodiment, the fixing member 6 is provided with a through hole 61 , and the driving head 21 passes through the through hole 61 . In this way, when assembling, the rotating base is first inserted into the main body 1 and the fixing part 6 by the drive head 21, and then the fixing part 6 is installed on the rotating base 2. The fixing part 6 and the stopper 24 can position the rotating base 2 on the body 1. When maintenance and repairs are desired, the fixing part 6 can be disassembled. The service life of the present invention can be extended.

Specifically, the hole wall of the receiving hole 11 is further provided with an inner convex ring 15, the first inner ring teeth 13 are arranged on the inner convex ring 15, and the two oblique ring teeth 23 are attached to opposite ends of the inner convex ring 15 along the first axis L1. noodle. Further, one of the second inner ring teeth 22 and one oblique ring tooth 23 are arranged on one side of the retaining portion 24 facing the driving head 21, and the rotating base 2 is further detachably provided with a collar 26, and the collar 26 is provided with another second inner ring tooth 22 and another oblique ring tooth 23. In this embodiment, the collar 26 is sandwiched between the inner convex ring 15 and the fixing member 6 to prevent the collar 26 from detaching from the inner convex ring 15 arbitrarily.

In this embodiment, the flange 27 is provided with a ring groove 271, the fixing member 6 is an elastic buckle, and the fixing member 6 is detachably sleeved in the ring groove 271, so that the fixing member 6 can be disassembled smoothly.

Preferably, the adjusting assembly 5 includes a rotating cover 53 and an adjusting member 54. The adjusting member 54 is inserted in the rotating base 2 and can rotate around the first axis L1. The two first spring-resisting members 51 and the two second spring-resisting members 52 are arranged on the adjusting member 54. The rotating cover 53 is non-rotatably assembled with the adjusting member 54. The optional rotating cover can have a dust-proof function and can rotate the adjusting member 54 more conveniently.

Wherein, the adjustment assembly 5 is further provided with a return spring 55, the adjustment member 54 can slide along the first axial direction L1, and the return spring 55 bounces between the rotating cover 53 and the adjustment member 54, so that the adjustment member 54 is normally pushed away from the driving head 21.

As shown in Figures 7 to 9, in another embodiment, the flange 27 of the rotating seat 2 is provided with an external thread portion 272A, and the fixing member 6A is provided with an internal thread portion 62A screwed to the external thread portion 272A, and the fixing member 6 can be disassembled and assembled smoothly in the same way.

1: Ontology

2: rotating seat

21: Drive head

5: Adjust components

53: Swivel cover

6:Fixer

Claims (9)

A ratchet wrench, comprising: a body including a receiving hole and a mandrel, the receiving hole is provided with a first inner ring tooth, the mandrel is provided with a first outer ring tooth; a rotating seat, one end is provided with a drive head, the rotating seat is arranged in the receiving hole so as to rotate around a first axis, the mandrel rotates around a second axis transverse to the first axis, the rotating seat is further provided with two second inner ring teeth and two helical ring teeth, and the end of the rotating seat away from the driving head is provided with a stopper, the two helical ring teeth and the first outer ring tooth Two first ratchet blocks are pivoted symmetrically on both sides of the rotating seat and abut against the first inner ring teeth; two second ratchet blocks are pivotally arranged on the rotating seat and are respectively located at the two ends of the two first ratchet blocks along the first axial direction, and the two second ratchet blocks respectively abut against the two second inner ring teeth; an adjustment assembly is rotatably arranged on the rotating seat, and is provided with two first springs and two second springs. Two first ratchet blocks, the two second resilient members bounce against the two second ratchet blocks respectively; a fixed part is detachably installed on one end of the rotating seat opposite to the stop part, so that the stop part and the fixed part are clamped against the body; wherein, the end of the turn seat away from the stop part is further provided with a flange, and the outer diameter of the flange is smaller than the minimum inner diameter of the receiving hole. part, the fixing part is detachably arranged on the flange; the rotating seat further includes a connecting part, and the connecting part is connected between the blocking part and the flange. The ratchet wrench according to claim 1, wherein the hole wall of the receiving hole is further provided with an inner convex ring, the first inner ring teeth are arranged on the inner convex ring, and the two oblique ring teeth are abutted against two opposite end surfaces of the inner convex ring along the first axial direction. The ratchet wrench as described in Claim 2, wherein one of the inner ring teeth and one of the helical ring gears are arranged on the side of the stopper facing the driving head, and a collar is detachably sheathed on the rotating base, and the collar is provided with another inner ring tooth and another helical ring tooth. The ratchet wrench according to claim 2, wherein the collar is clamped between the inner convex ring and the fixing member. The ratchet wrench according to claim 1, wherein the flange ring is provided with a ring groove, the fixing part is an elastic buckle, and the fixing part is detachably sleeved in the ring groove. The ratchet wrench according to claim 5, wherein the flange is provided with an external threaded portion, and the fixing member is provided with an internal threaded portion screwed to the external threaded portion. The ratchet wrench according to claim 1, wherein the fixing member is provided with a through hole, and the driving head is passed through the through hole. The ratchet wrench as described in claim 1, wherein the adjustment assembly includes a rotating cover and an adjustment member, the adjustment member is inserted into the rotating base and can rotate around the first axis, the two first spring-resisting members and the two second spring-resisting members are arranged on the adjustment member, and the rotating cover is non-rotatably assembled with the adjustment member. The ratchet wrench as described in claim 3, wherein the collar is clamped between the inner convex ring and the fixing member; the flange ring is provided with a ring groove, the fixing member is an elastic buckle, and the fixing member is detachably sleeved in the ring groove; the flange is provided with an external thread portion, and the fixing member is provided with an internal thread portion screwed to the external thread portion; the fixing member is provided with a through hole, and the driving head is passed through the through hole; seat and can rotate around the first axis, The two first elastic parts and the two second elastic parts are arranged on the adjusting part, and the rotating cover is non-rotatably assembled with the adjusting part; the adjusting assembly is further provided with a return spring, the adjusting part can slide along the first axial direction, and the returning spring is pressed between the rotating cover and the adjusting part.

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