TW202045315A - High torque ratchet wrench - Google Patents

Abstract

A high torque ratchet wrench includes a main body, with a ratchet member, two ratchet blocks, two elastic bodies, and a changeover switch disposed therein, and the ratchet member is rotatable. The changeover switch is rotatably switchable to force the ratchet blocks to move with the elastic bodies, whereby one of the two ratchet blocks to be meshed with the ratchet member, with the other ratchet blocks being released from the ratchet member. The ratchet member has a position limiting portion, and the ratchet block has a resisting surface resisting against the position limiting portion. The elastic bodies are connected to and positioned on the ratchet blocks. When the ratchet block is in an idling status, the ratchet member keeps the ratchet block on a pivotally swinging path, so as to avoid skewing thereof. Thus, the ratchet wrench is fluently operated, facilitating the high torque operation.

Description

High torque ratchet wrench

The invention relates to a ratchet wrench, in particular to a high torque ratchet wrench.

For example, Taiwan Patent No. M377290 discloses a ratchet wrench structure, which includes a main body, a ratchet, two teeth, two elastic bodies, a steering member, an upper cover and a steering knob. Wherein, the ratchet wheel is pivoted in the first accommodating groove of the main body, and the two teeth are accommodated in the second accommodating groove of the main body, and one end of each elastic body abuts against the wall surface of the second accommodating groove of the main body. One end abuts against one side of each tooth, so that the two teeth are meshed with the ratchet, and the steering member is pivoted to the control groove of the body, and the steering knob is combined with the steering member to control the rotation of the steering member to make One of the teeth meshes with the ratchet, and the other tooth is out of the reversing control of the ratchet.

However, the elastic body only abuts against the side surface of the tooth-making body with its end, and there is no positioning structure between the two parts, so that the contact point between the tooth-making body and the elastic body cannot be fixed during the operation of the tooth-making body. There is a slight deviation between the teeth, which will adversely affect the operation of the elastic body under long-term use. In other words, due to the slight deviation, the elastic body cannot be normally fixed between expansion and compression. It is easy to damage the elastic body, and in severe cases it will affect the operation of the entire reversing mechanism. Furthermore, since the pivot of each tooth is pivoted in the pivot groove of the second accommodating groove, the tooth can pivot relative to the main body. However, when the tooth is idling by the ratchet and the tooth jumps, the tooth is correspondingly pivoted, but the contact point between the tooth and the elastic body is not fixed, resulting in an unclear support point, which makes the trajectory of the tooth jump irregular ( It is easy to jump randomly), and even make the pivot part of the tooth-making part easily half out of the pivot groove, thereby affecting the performance of meshing with the ratchet.

In addition, when the aforementioned gear is driven by the steering member to produce pivoting, because there is no limit structure to restrict the deflection of the gear in a certain range, the gear is prone to excessive swing angle or excessive swing in the gear skipping stage. Excessive displacement makes it impossible to accurately mesh with the ratchet, which will affect the torque output performance of the ratchet wrench, which is not conducive to high-torque operations.

In order to solve the above-mentioned problems, the present invention discloses a high torque ratchet wrench, the elastic body of which can be connected to and positioned on the ratchet block, and the ratchet block can be idle when the teeth jump, and the ratchet element can keep the ratchet block on the pivotal trajectory. No deflection, so that the wrench moves more smoothly, which is conducive to high torque operation.

To achieve the above objective, an embodiment of the present invention provides a high-torque ratchet wrench, which includes: a body, a ratchet, two ratchet blocks, two elastic bodies, and a reversing switch. The body includes a handle and a head connected to the handle. The head has an accommodating space. The accommodating space includes a first accommodating groove and a second accommodating groove. The second accommodating groove and the first The accommodating space is connected, the head has a first surface and a second surface that are oppositely arranged, and the head is provided with a mounting hole on the first surface. The mounting hole is connected to the second accommodating groove, which is different from A pair of pivotal grooves are provided on the wall surface of the first accommodating groove; the ratcheting member is rotatably arranged in the first accommodating groove, and the outer periphery of the ratcheting member is concavely provided with a ring tooth, and one side of the ring tooth is convexly provided with a limiting part; The two ratchet blocks respectively have a pivot end and a tooth end, the pivot end is pivoted in the pivot groove, the tooth end is opposite to the ring teeth, and the ratchet block is one A positioning portion is provided on the side facing the inner wall of the second accommodating groove. The ratchet block has an abutting surface on the side of the positioning portion and is opposite to the limiting portion; the two elastic bodies respectively have a first abutment Abutting end and a second abutting end, the second abutting end abuts against the inner wall of the second accommodating groove, the first abutting end abuts against the positioning part; the reversing switch is rotatably arranged at The second accommodating groove, the reversing switch has an operating part and a top part connected to the operating part, the operating part is exposed outside the mounting hole, and the top part is located in the second accommodating groove and can be generated relative to the second accommodating groove Rotation is used to control the engagement or disengagement of the ratchet block relative to the ratcheting member. When the ratchet block is idling and jumps its teeth, the abutment surface can abut against the limiting part to keep The pivoting track of the ratchet block is not deflected.

Thereby, when the ratchet block is in the idling state of jumping teeth, the abutting surface can abut against the limit part to maintain the pivotal trajectory of the ratchet block without skewing or jumping randomly. The pivoting action in the second accommodating slot is more regular and smooth, so that the meshing motion of the ratchet block and the ratcheting piece is more reliable, effectively improving the meshing degree, and providing the output performance of the wrench with high torque.

The first abutting end of the elastic body is connected to and positioned at the positioning portion of the ratchet block to ensure that the elastic body and the ratchet block will not shift during the operation of the wrench, thereby reducing damage to the elastic body and prolonging the service life.

The exemplary embodiments of the present invention are described in detail below with reference to the drawings, and are not intended to limit the technical principles of the present invention to specific disclosed embodiments, and the scope of the present invention is only limited by the scope of the patent application, covering alternatives, modifications and Equivalent.

1 to 5, the present invention is a high torque ratchet wrench 100, which includes a body 10, a ratchet 20, two ratchet blocks 30, two elastic bodies 40, and a reversing switch 50. The ratchet 20, the two ratchet blocks 30, the two elastic bodies 40 and the reversing switch 50 are all arranged in the main body 10.

The main body 10 includes a handle 11 and a head 12 connected to the handle 11. The head 12 has an accommodating space 13, and the head 12 has a first surface 14 and a second surface 15 oppositely arranged. The head 12 is provided with a mounting hole 141 and a shaft hole 142 on the first surface 14, and The second surface 15 has a fixing groove 151. In the embodiment of the present invention, the accommodating space 13 includes a first accommodating groove 131 and a second accommodating groove 132 that are connected, the mounting hole 141 is connected to the second accommodating groove 132, and the shaft hole 142 is connected In the first accommodating groove 131, the fixing groove 151 is connected to the accommodating space 13. In addition, a pair of pivotal grooves 133 are provided on the wall surface of the second receiving groove 132 different from the first receiving groove 131.

The ratchet member 20 is rotatably disposed in the first receiving groove 131. In another embodiment, the ratchet member 20 can be inserted into the first accommodating groove 131 through the fixing groove 151 and the accommodating space 13 of the second surface 15. A ring tooth 21 is recessed on the outer periphery of the ratchet member 20. A ring-shaped limiting portion 22 is protruded on one side of the ring tooth 21. The limiting portion 22 extends perpendicular to the axial direction of the first receiving groove 131. In addition, the ratchet member 20 is provided with a pressing portion 23 and a connecting square head 24 at opposite ends, respectively. The connecting square head 24 has a fixing bead 241, and the pressing portion 23 can be used for pressing operation to make the fixing bead 241 protrude. Exposure or immersion provides the connecting square head 24 with the function of detachably clamping the connecting sleeve. When the ratchet element 20 is assembled to the main body 10, the pressing portion 23 thereof exposes the first surface 14 through the shaft hole 142, and the connecting square head 24 exposes the second surface 15. In other embodiments, the ratchet member 20 is provided with an engaging hole at the center for engaging the sleeve.

The ratchet block 30 has a pivot end 31 and a tooth end 32 respectively. The tooth end 32 is opposite to the ring tooth 21. The pivot end 31 is pivoted in the pivot groove 133 so that the ratchet The tooth block 30 can generate a swing movement in the second receiving groove 132. Wherein, a positioning portion 33 is provided on one side of the ratchet block 30 and facing the inner wall of the second accommodating groove 132, and the ratchet block 30 has an abutting surface 34 opposite to the limiting portion 22. In the embodiment of the present invention The positioning portion 33 is a groove, and the ratchet block 30 has a side surface 35 opposite to the abutting surface 34. The groove extends from the side 35 toward the abutting surface 34.

As shown in FIG. 3, the distance from the positioning portion 33 to the tooth end 32 is smaller than the distance from the positioning portion 33 to the pivot end 31. An opening 36 is connected to the outside of the groove, and the inner diameter of the opening 36 is smaller than the inner diameter of the groove.

The elastic body 40 is provided with a first abutting end 41 and a second abutting end 42 respectively. The second abutting end 42 abuts against the inner wall of the second receiving groove 132, and the first The abutting end 41 abuts against the positioning portion 33, so that the position where the elastic body 40 is supported by the ratchet block 30 is clearer and will not move and shift with each other. In the embodiment of the present invention, the elastic body 40 is a compression spring, the outer diameter of the first abutting end 41 is smaller than the outer diameter of the second abutting end 42, and the first abutting end 41 is arranged in the groove, and After being provided in the groove, since the opening 36 is relatively smaller than the positioning portion 33, the first abutting end 41 will not detach from the direction of the opening 36.

The reversing switch 50 is rotatably arranged in the second accommodating groove 132. The reversing switch 50 has an operating portion 51 and a top portion 52 connected to the operating portion 51. The operating portion 51 is exposed outside the mounting hole 141 and abuts The top part 52 is slightly triangular in shape and is located in the second accommodating groove 132, and can be rotated relative to the second accommodating groove 132 to control one ratchet block 30 to engage with the ratchet member 20 and control the other ratchet block 30 is disengaged from the ratchet member 20. In the embodiment of the present invention, the tip of the abutment portion 52 points to the ratchet member 20.

In the embodiment of the present invention, the abutting portion 52 has a first abutting surface 521 and a second abutting surface 522 for selectively abutting the ratchet block 30. For example, as shown in FIG. 4, when the reversing switch 50 is switched to the clockwise position, the first abutting surface 521 abuts against the right ratchet block 30, and the right ratchet block 30 engages with the ring tooth 21 on the right side of the ratchet 20, The tooth end 32 of the left ratchet block 30 separates from the ring tooth 21 on the left side of the ratchet 20, so that the ratchet 20 can rotate in a counterclockwise direction; on the contrary, as shown in FIG. 5, when the reversing switch 50 is switched to In the counterclockwise position, the second abutting surface 522 abuts against the left ratchet block 30, the left ratchet block 30 engages with the ring tooth 21 on the left side of the ratchet 20, and the tooth end 32 of the right ratchet block 30 separates from the ratchet. The ring teeth 21 on the right side of the movable member 20 enable the ratchet member 20 to rotate in a clockwise direction.

The present invention further includes a cover 60, which is installed in the fixing groove 151, to confine the ratchet member 20, the ratchet block 30, the elastic body 40 and the reversing switch 50 in the body 10. Wherein, the cover 60 has a through hole 61 for the connecting square head 24 of the ratchet member 20 to pass through.

Furthermore, the top portion 52 of the reversing switch 50 is provided with a locking hole 53 on the side different from the operating portion 51, and the cover 60 is provided with a coupling hole 62 on the side of the perforation 61 for a locking member 70 to pass through the coupling hole 62 It is locked in the key hole 53, so that the reversing switch 50 is positioned.

As shown in FIGS. 3 to 5, when the first abutting surface 521 or the second abutting surface 522 of the abutting top 52 abuts against one of the ratchet blocks 30, the other ratchet block 30 is idling and jumps teeth. In the state, the abutting surface 34 can abut against the limiting portion 22, so as to maintain the pivotal trajectory of the ratchet block 30 without skew or jump randomly. At the same time, the pivotal connection of the ratchet block 30 The end 31 is not easy to partly detach from the pivotal groove 133, so that its pivoting action is more regular and smooth, so that the tooth end 32 of the ratchet block 30 engages with the ratchet member 20 more reliably, and the engagement degree is effectively improved. , In order to achieve the high torque performance of the wrench.

Furthermore, since the first abutting end 41 of the elastic body 40 abuts against the positioning portion 33 of the ratchet block 30 and maintains a normal contact state to ensure that the elastic body 40 and the ratchet block 30 will not move out of alignment, In turn, damage to the elastic body 40 is reduced and the service life is prolonged.

Although the present invention is described in a preferred embodiment, those skilled in the art can make various changes in various forms without departing from the spirit and scope of the present invention. The above-mentioned embodiments are only used to illustrate the present invention, and are not used to limit the scope of the present invention. Any modification or change that does not violate the spirit of the present invention falls within the scope of the patent application of the present invention.

100: High torque ratchet wrench 11: handle 13: accommodation space 132: The second holding tank 14: First side 142: Shaft hole 151: fixed slot 21: Ring tooth 23: pressing part 241: Card Guzhu 31: Pivot end 33: Positioning part 35: side 40: elastomer 42: second abutment end 51: Operation Department 521: The first to the top 53: keyhole 61: Piercing 70: lock firmware 10: body 12: head 131: The first holding tank 133: Pivot Slot 141: mounting hole 15: second side 20: ratchet 22: limit part 24: Connecting square head 30: ratchet block 32: tooth end 34: abutment surface 36: Opening 41: first abutment end 50: Reversing switch 52: reach the top 522: second to the top 60: Lid 62: Combination hole

[Figure 1] is an exploded view of the structure of the high-torque ratchet wrench of the present invention. [Figure 2] is a partial cross-sectional view of the high torque ratchet wrench of the present invention. [Figure 3] is a top view of the ratchet block of the high torque ratchet wrench of the present invention. [Fig. 4] The reversing switch of the high torque ratchet wrench of the present invention is switched to the clockwise position, showing that the first abutting surface is against the ratchet block on the right side, so that the ratchet member can rotate counterclockwise relative to the head. [Fig. 5] The reversing switch of the high torque ratchet wrench of the present invention is switched to the clockwise position, showing that the second abutting surface is against the ratchet block on the right side, so that the ratchet member can rotate counterclockwise relative to the head.

100: High torque ratchet wrench

10: body

11: handle

12: head

13: accommodation space

131: The first holding tank

132: The second holding tank

133: Pivot Slot

14: First side

141: mounting hole

142: Shaft hole

15: second side

151: fixed slot

20: ratchet

21: Ring tooth

22: limit part

23: pressing part

24: Connecting square head

241: Card Guzhu

30: ratchet block

31: Pivot end

32: tooth end

33: Positioning part

34: abutment surface

35: side

40: elastomer

41: first abutment end

42: second abutment end

50: Reversing switch

51: Operation Department

52: reach the top

521: The first to the top

522: second to the top

53: keyhole

60: Lid

61: Piercing

62: Combination hole

70: lock firmware

Claims (8)

A high-torque ratchet wrench includes: a body including a handle and a head connected to the handle, the head having an accommodating space, the accommodating space including a first accommodating groove and A second accommodating groove, the second accommodating groove communicates with the first accommodating space, the head has a first surface and a second surface arranged oppositely, and the head is provided with a first surface A mounting hole, the mounting hole communicates with the second accommodating groove, the wall of the second accommodating groove is different from the first accommodating groove is provided with a pair of pivot grooves; a ratcheting member is rotatably arranged on the first accommodating groove The accommodating groove, and the outer periphery of the ratcheting piece is concavely provided with a ring tooth, and one side of the ring tooth is convexly provided with a limiting part; two ratchet blocks each have a pivot end and a tooth end, the The pivot end is pivoted in the pivot groove, the tooth end is opposite to the ring tooth, and a positioning portion is provided on one side of the ratchet block and facing the inner wall of the second accommodating groove , The ratchet block has an abutment surface on the side of the positioning portion relative to the limiting portion; two elastic bodies, which respectively have a first abutment end and a second abutment end, the The second abutting end abuts against the inner wall of the second accommodating groove, and the first abutting end abuts against the positioning portion; and a reversing switch is rotatably arranged in the second accommodating groove , The reversing switch has an operating portion and an abutting top connected to the operating portion, the operating portion is exposed outside the mounting hole, the abutting top is located in the second accommodating groove, and can be relatively to the second accommodating The groove is rotated to control the ratchet block to engage or disengage from the ratchet member. When the ratchet block is idling and jumps teeth, the abutting surface can abut against the limit position Part in order to maintain the pivoting track of the ratchet block without skew. The high-torque ratchet wrench according to claim 1, wherein the positioning portion is a groove, the ratchet block is provided with a side surface opposite to the abutting surface, and the groove faces the abutting surface from the side The surface direction extends. The high-torque ratchet wrench according to claim 2, wherein an opening is connected to the outside of the groove, the inner diameter of the opening is smaller than the inner diameter of the groove, and the second abutting end is set It is arranged in the groove and will not detach from the direction of the opening. The high torque ratchet wrench according to claim 3, wherein the distance from the positioning portion to the end of the tooth is smaller than the distance from the positioning portion to the pivot end. The high torque ratchet wrench according to claim 4, wherein the elastic body is a compression spring, and the outer diameter of the first abutting end is smaller than the outer diameter of the second abutting end. The high-torque ratchet wrench according to claim 1 or 2, wherein the limiting portion is ring-shaped and is provided on one side of the ring tooth, and extends perpendicular to the axial direction of the first accommodating groove. The high-torque ratchet wrench according to claim 6, wherein the abutting part has a first abutting surface and a second abutting surface for selectively abutting the ratchet block; the ratcheting member The second mask has a connecting square head exposed outside the second surface; the second mask has a fixing groove connected to the accommodating space; the fixing groove is installed with a cover; the cover has a hole for the connecting square head to pass through. The high-torque ratchet wrench according to claim 7, wherein a lock hole is provided on the side of the abutting top that is different from the operating portion, and the cover is provided with a coupling hole on the perforated side for a lock member to pass through the The combination hole is locked to the lock hole.

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