TWI690394B - Ratchet wrench - Google Patents

Abstract

A ratchet wrench includes a main body, a restricting member, a switching member and a position-limiting assembly. The main body defines an axial direction. The main body includes a first containing chamber and a second containing chamber which is communicated with the first containing chamber. The restricting member is disposed on the second containing chamber. The switching member is axially rotatably disposed on the second containing chamber and is axially movable in a first position or a second position. The position-limiting assembly includes an abutting member. The abutting member is movably disposed in the main body and is transverse to the axial. One of the switching member and the abutting member has a first inclined plane, and the other is abutted against the first inclined plane.

Description

Ratchet wrench

The invention relates to a ratchet wrench.

In general, ratchet wrenches are used to swing back and forth to continuously lock objects. Because different objects have different specifications and sizes, as shown in patent numbers US9931737 and TWI524970, it discloses a ratchet wrench that can replace ratchet parts. Its main It has a switching element, a clamping piece, an axial elastic piece and a radial elastic piece. Under normal conditions, the radial elastic piece springs against the clamping piece and the axial elastic piece springs against the switching piece. In order to make the locking member radially lock against the ring groove of the ratchet member and the switching member will not press down on the locking member, so that the ratchet member will not disengage from the wrench, when the user presses the switching member, The switching member will axially press the locking member, so that the locking member moves away from the ratchet member so that the ratchet member will not be caught by the locking member and can be detached from the wrench for replacement. When the user releases this When the switching member is used, the two elastic members respectively urge the locking member and the switching member to reset.

However, such conventional ratchet wrenches with replaceable ratchet members have the following disadvantages. For example, in order to prevent the elastic member from disengaging from the wrench when the switching member is axially reset, the above-mentioned conventional patent requires an additional cover plate In order to limit the switching element to the wrench, in addition, the abutment position between the switching element and the snapping element of the above-mentioned conventional patents will cause the switching element to have an external force to reverse when resetting, which will require the switching element to be equipped with axial elasticity. The parts can be reset smoothly, so it is known that ratchet wrenches with replaceable ratchet parts have It has the disadvantages of complicated structure, difficult assembly and high production cost. This shortcoming leads to higher selling price, and it loses the market competitiveness. There are shortcomings that need to be improved.

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

The main purpose of the present invention is to provide a ratchet wrench, which has the advantages of simple structure, convenient assembly and low production cost, and still can smoothly reset the switching member to achieve the purpose of quickly replacing the ratchet member.

In order to achieve the above object, the present invention provides a ratchet wrench including a body, a braking member, a switching member and a limiting component. The body defines an axial direction and includes a first chamber and a second chamber communicating with each other. The body is provided with a top and a bottom on both sides along the axial direction, and a ratchet member is detachably pivoted on the body The ratchet member is provided with a ratchet portion and a ring groove along the outer peripheral surface in the first chamber. The braking element is arranged in the second chamber and is provided with a locking portion which is locked with the ratchet portion. The switching member can be rotatably provided in the second chamber and protrudes from the top along the axial direction, and can also move along a first position toward the top and a second position toward the bottom along the axial direction, by Rotating the switching member can control the locking portion to restrict the rotation direction of the ratchet member. The limiting component includes an abutting member and an elastic member, the abutting member is slidably disposed in the body transverse to the axial direction and is located between the switching member and the bottom, the switching member faces one end of the bottom and the One of the abutting members facing one end of the switching member is provided with a first inclined surface, and the other is in contact with the first inclined surface, the elastic member springs against the body and the abutting member, so that the abutting The top piece has a tendency to slide in the direction of the first accommodating chamber, and the abutting piece is further provided with a blocking portion, the blocking portion extends along the axial direction of the abutting piece and is located between the braking member and the first accommodating chamber . Among them, when the switch is located in the first At a position, the abutment member extends into the first chamber and is allowed to bear against the ring groove; when the switching member moves toward the second position, the switching member pushes against the abutment member and The first inclined surface moves the abutting member away from the first chamber, the abutting member does not snap against the ring groove, and the stopper blocks the stopper to limit the stopper and stops the stopper Move away from the first chamber to prevent the brake from moving to the first chamber.

1: Ontology

33: first guide groove

2: brake

34: second guide groove

3: switch piece

41: top piece

4: limit components

42: Elastic piece

5: The first snap-on component

43: Second slope

6: limit piece

44: Board

7: Cover

45: bump

9: Ratchet

46: Dovetail block

11: axial

47: Dovetail slot

12: First room

48: Block

13: Second room

441: The first part

14: top

442: Second component

15: bottom

61: The first set of holes

16: Second snap-on component

62: Notch

17: containment block

71: Second set of holes

141: Bezel

72: Lock firmware

142: Tolerance

91: Ratchet

21: Card switch

92: Ring groove

31: The first slope

L1: first distance

32: Accommodation Department

L2: second distance

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 invention.

4 and 5 are partial perspective views of a preferred embodiment of the present invention.

6 is a side cross-sectional view of a preferred embodiment of the present invention.

7 is a partial enlarged view of FIG. 6.

8 is a schematic diagram of the operation of a preferred embodiment of the present invention.

9 is a partial perspective view of a preferred embodiment of the present invention.

The following merely illustrates the possible implementation forms of the present invention with examples, but it is not intended to limit the scope of the invention to be protected, and will be described first.

Please refer to FIGS. 1 to 9, which show a preferred embodiment of the present invention. The ratchet wrench of the present invention includes a body 1, a braking member 2, a switching member 3 and a limiting component 4.

The body 1 defines an axial direction 11, including a first chamber 12 and a second chamber 13 communicating with each other. The body 1 is provided with a top 14 and a bottom 15 along the two sides of the axis 11 respectively, and a ratchet member 9 is detachably pivoted in the first chamber 12 and the ratchet member 9 is provided with a ratchet portion 91 and a ring groove 92 along the outer peripheral surface, the inner peripheral surface of the ratchet member 9 can be sleeved on a locking member (Such as nuts) for locking operations.

The braking member 2 is disposed in the second chamber 13 and has a latching portion 21 that latches with the ratchet portion 91.

The switching member 3 is rotatably provided in the second chamber 13 and protrudes from the top 14 for user to dial, and the switching member 3 can also move along the axis 11 to a first toward the top 14 The position and a second position toward the bottom 15 can be controlled by turning the switch 3 to control the latch 21 to restrict the rotation direction of the ratchet 9.

The limiting component 4 includes an abutting member 41 and an elastic member 42. The abutting member 41 is slidably disposed in the body 1 transverse to the axial direction 11 and is located between the switching member 3 and the bottom 15. The switching One of the end of the member 3 facing the bottom 15 and the end of the abutment member 41 facing the switching member 3 is provided with a first inclined surface 31, and the other is in contact with the first inclined surface 31, and the elastic member 42 springs against Between the body 1 and the abutment member 41, the abutment member 41 has a tendency to slide toward the direction of the first chamber 12, the abutment member 41 is further provided with a blocking portion 48, and the blocking portion 48 It extends along the axial direction of the abutment member 41 and is located between the braking member 2 and the first chamber 12. In this embodiment, the first inclined surface 31 is provided at one end of the switching member 3 toward the bottom 15.

Wherein, when the switching element 3 is in the first position, the abutment element 41 extends into the first accommodating chamber 12 and is engaged with the ring groove 92, and the ratchet member 9 cannot escape from the first accommodating chamber 12 For the locking operation; when the user presses to move the switching element 3 towards the second position, the switching element 3 pushes against the pressing member 41 and the first slope 31 makes the contact The top member 41 moves away from the first chamber 12, and the top member 41 does not snap against the ring groove 92. In this embodiment, the first inclined surface 31 is along the axial direction 11 pushes against the abutment member 41, the abutment member 41 can be driven by the first inclined surface 31 to move away from the first chamber 12 (in other embodiments, the first inclined surface is provided on the abutment The top piece can still have the same effect), the top piece 41 does not snap against the ring groove 92 so that the ratchet piece 9 can be detached from the first chamber 12, according to the size of the locking member to be locked Proceed to replace the ratchet member 9, and the stopper 48 stops the braking member 2 to the limit position and moves the braking member 2 away from the first chamber 13 to prevent the braking member 2 from moving to the first chamber Chamber 12, when the ratchet member 9 is detached from the body 1, the brake member 2 can be prevented from detaching from the body 1 from the first chamber 12, and the brake member 2 can be avoided when another ratchet member is to be reinstalled It extends into the first chamber 12 and interferes.

It is worth mentioning that, since the switch member 3 is pressed against the pressing member 41 from one end toward the bottom 15, when the user is not pressing the switch member 3, the elastic member 42 will press the switch member 3 The member 41 is pushed toward the direction of the first chamber 12, and the abutment member 41 will be pushed against the end of the switching member 3 toward the bottom 15, so that the switching member 3 can move smoothly toward the first position, And the switching element 3 will not be turned, so the switching element 3 can be reset smoothly.

Specifically, the ratchet wrench further includes a first resilient component 5, one end of the first resilient component 5 is resilient to the switching element 3, and the other end is resilient to the braking element 2, so that the braking element 2 has It tends to move in the direction of the first chamber 12 and engages with the ratchet portion 91.

Preferably, in this embodiment, the first inclined surface 31 is provided at an end of the switching member 3 facing the bottom 15, the abutment member 41 is provided with a second inclined surface 43 at the end of the switching member 3, the first inclined surface 31 is in contact with the second inclined surface 43. Further, preferably, the abutment member 41 includes a plate 44 and a projection 45 connected to each other, the projection 45 is provided with the second slope 43, and the angle between the second slope 43 and the plate 44 Between 145 degrees and 125 degrees, in this embodiment, the angle between the second inclined surface 43 and the plate 44 is 135 degrees, which can make the switch 3 move more smoothly when moving toward the second position The top piece 41 faces away from the first chamber 12 Move in the direction, and make the elastic member 42 return to the first position more smoothly when the elastic member 42 is elastically pressed against the first chamber 12.

The thickness of the plate 44 along the axial direction 11 defines a first distance L1, and the distance of the second inclined surface 43 defines a second Distance L2, the ratio of the first distance L1 to the second distance L2 is between 1:5 and 1:7, and in this embodiment is 1:6, so that the second inclined surface 43 can be effectively pushed against The first slope 31.

In addition, the plate 44 includes a first part 441 and a second part 442, the first part 441 is integrally provided with the bump 45, and one of the first part 441 and the second part 442 is provided with a dovetail block 46, the other is provided with a dovetail groove 47 which is in interference with the dovetail block 46. In this embodiment, the dovetail groove 47 is provided on the first component 441, and the dovetail block 46 is provided on the second component 442, the The second component 442 is away from one end of the first component 441 for snapping against the ring groove 92, and one end of the elastic member 42 springs against a side of the protrusion 45 opposite to the second inclined surface 43. Therefore, since the first The component 441 is integrally provided with the protrusion 45, which is more complicated in manufacturing process. The first member 441 and the second member 442 are formed by the plate 44 being snapped together to reduce the first member The cost of 441 in the one-piece manufacturing process, and the first part 441 and the second part 442 may have different widths to match when manufacturing the ratchet wrench of different specifications.

In this embodiment, the top 14 is integrally provided with a baffle 141. The baffle 141 is provided with a receiving hole 142 communicating with the second receiving chamber 13 along the axial direction 11. The baffle 141 blocks the brake 2, the switching element 3 is inserted from the receiving hole 142 and accommodated in the second chamber 13, and the switching element 3 is further concavely provided with an accommodating portion 32 toward one end of the first chamber 12, the brake A part of the component 2 is inserted into the accommodating portion 32, so that the baffle 141 can limit the braking component 2 to prevent the braking component 2 from separating from the top 14 of the body 1 and the switching component 3 is braked The limit of the piece 2 can not be detached, and the top 14 is integrally formed without additional installation on the The top 14 is used to limit the components of the switching element 3, which can make the structure of the body 1 simpler to reduce the manufacturing cost.

Further, the ratchet wrench further includes a limiting member 6, the limiting member 6 is penetrated with a first set of holes 61 and a notch 62, and the abutment member 41 is slidably disposed on the notch 62 to make the abutment The member 41 can only slide along the opening direction of the notch 62, and the first set of holes 61 can pass through the ratchet member 9. The ratchet wrench further includes a cover plate 7. The cover plate 7 is provided with a second set of holes 71. The second set of holes 71 can pass through the ratchet member 9. The cover plate 7 covers the bottom 15 and The locking member 72 (in this embodiment, a screw) is used to lock the limiting member 6, the pressing member 41 and the braking member 2 into the body 1.

In addition, one of the switching element 3 and the body 1 is provided with a second resilient component 16, and the other is provided with a first guide groove 33 and a second guide groove 34 in communication, the first guide groove 33 Extending transverse to the axial direction 11, the second guide groove 34 extends parallel to the axial direction 11, and when the switching member 3 is at the first position, the second resilient component 16 can slide along the first guide groove 33 Springing against the first guide groove 33, so that the switching element 3 can rotate relative to the body 1. When the angle of rotation of the switching element 3 is centered, the ratchet wrench, the second elastic pressing element 16 corresponds to the second guide Groove 34, the switching element 3 can be moved to the second position by the second resilient member 16 sliding into the second guide groove 34, so the switching element 3 needs to be rotated to the middle to press the switching element 3 to the second position, so that the first inclined surface 31 can accurately position the abutment member 41 so that the abutment member 41 has a sufficient distance to move away from the first chamber 12. In this embodiment, the body 1 further includes a detachable accommodating block 17, the elastic member 42 and the second resilient component 16 resiliently accommodate the accommodating block 17, the first guide groove 33 and The second guide groove 34 is disposed on the outer peripheral wall of the switch 3. The first guide groove 33 extends along the circumferential direction of the switch 3. One end of the second guide groove 34 is centrally connected to the first guide groove 33. The advantage that the accommodating block 17 can be detached from the body 1 is that the accommodating block 17 can be manufactured in advance without increasing the processing cost of the body 1.

In summary, in the ratchet wrench of the present invention, since the switching member is pressed against the pressing member from one end toward the bottom, when the user no longer presses the switching member, the elastic member will push the pressing member Push against the direction of the first chamber, and the abutment member will push against the end of the switching member toward the bottom, so that the switching member can smoothly move toward the first position without causing the switching member Flip occurs, so the switch can be reset smoothly.

1: Ontology

3: switch piece

9: Ratchet

14: top

15: bottom

141: Bezel

Claims (10)

A ratchet wrench includes: A body, defining an axial direction, includes a first chamber and a second chamber communicating with each other, the body is provided with a top and a bottom along two sides of the axis, and a ratchet member is detachably pivoted on A ratchet part and a ring groove are provided in the first chamber and along the outer peripheral surface of the ratchet member; A braking member, provided in the second chamber and provided with a latching portion that latches with the ratchet portion; A switching element can be rotatably provided in the second chamber and protrudes from the top along the axial direction, and can be moved along a first position toward the top and a second position toward the bottom along the axial direction, By turning the switching member, the locking part can be controlled to limit the rotation direction of the ratchet member; A limiting component includes an abutting member and an elastic member, the abutting member is slidably disposed in the body transverse to the axial direction and is located between the switching member and the bottom, and the switching member faces one end of the bottom and One of the ends of the pressing member facing the switching member is provided with a first inclined surface, and the other is in contact with the first inclined surface, and the elastic member springs between the body and the pressing member, so that the The abutting member has a tendency to slide toward the direction of the first accommodating chamber, and the abutting member is further provided with a blocking portion, which extends along the axial direction of the abutting member and is located between the braking member and the first accommodating chamber between; Wherein, when the switching element is in the first position, the abutment element extends into the first chamber and is allowed to abut against the ring groove; when the switching element moves toward the second position, the switching element pushes Against the abutment member and moving the abutment member away from the first chamber by the first inclined surface, the abutment member does not snap against the ring groove, and the stopper engages the braking member Stop the limit position and move the braking member away from the first chamber to prevent the braking member from moving to the first chamber. The ratchet wrench as described in claim 1 further includes a first resilient component, one end of the first resilient component urges against the switching element and the other end against the braking element, so that the braking element The trend of moving in the direction of the first compartment. The ratchet wrench according to claim 1, wherein the first inclined surface is provided at an end of the switching member facing the bottom, the abutment member is provided with a second inclined surface toward an end of the switching member, the first inclined surface and the second The slopes abut. The ratchet wrench according to claim 3, wherein the abutment member includes a plate and a protrusion connected to the protrusion, the protrusion is provided with the second slope, and the angle between the second slope and the plate is between 145 Between 125 degrees, where the thickness of the plate along the axial direction defines a first distance, and the distance of the second inclined plane defines a first distance when viewed in a direction transverse to the axial direction and the sliding direction of the abutment member Two distances, the ratio of the first distance to the second distance is between 1:5 and 1:7. The ratchet wrench according to claim 4, wherein the plate includes a first part and a second part, the first part is integrally provided with the protrusion, and one of the first part and the second part is provided with a The dovetail block, the other is provided with a dovetail groove which is in contact with the dovetail block, the end of the second part away from the first part is for being caught in the ring groove, and one end of the elastic member is springed against the protrusion One side of the second slope. The ratchet wrench according to claim 1, wherein the top is integrally provided with a baffle, the baffle is provided with a receiving hole communicating with the second chamber along the axial direction, the baffle blocks the stopper The switching element is inserted from the receiving hole and accommodated in the second accommodating chamber. The switching element is concavely provided with an accommodating portion radially toward an end of the first accommodating chamber, and a part of the braking member is inserted in the accommodating chamber Inside the department. The ratchet wrench according to claim 1, further includes a limiter piece, the limiter piece is provided with a first set of holes and a notch, the abutment piece is slidably disposed in the notch, and the first set of holes is provided for the The ratchet piece passes through. The ratchet wrench according to claim 7, which further includes a cover plate, the cover plate is provided with a second set of holes, the second set of holes can pass through the ratchet member, the cover plate is provided on the bottom and Locked by a fastener to accommodate the limiting member, the pressing member and the braking member in the body. The ratchet wrench according to claim 1, wherein one of the switching member and the body is provided with a second resilient component, and the other is provided with a first guide groove and a second guide groove communicating with each other, the first A guide groove extends transverse to the axial direction, and the second guide groove extends parallel to the axial direction. When the switching member is at the first position, the second resilient component can slide against the first guide groove The first guide groove allows the switching element to rotate relative to the body. When the rotation angle of the switching element is centered, the second resilient component corresponds to the second guide groove, and the switching element can pass the first guide groove. The two resilient components slide into the second guide slot and can move to the second position. The ratchet wrench according to claim 9, wherein the body further includes a detachable accommodating block, the elastic member and the second resilient component respectively resiliently accommodate the accommodating block, the first guide groove and The second guide groove is disposed on the outer peripheral wall of the switching element, the first guide groove extends along the circumferential direction of the switching element, and one end of the second guide groove is centrally connected to the first guide groove.

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