Reciprocating ratchet wrench

Abstract

The utility model discloses a reciprocating ratchet wrench which comprises a shell, a rotating assembly and an angle adjusting mechanism, and the lower end of the shell is rotationally connected with a holding rod through a rotating shaft. The rotating assembly comprises an annular groove, a ratchet wheel, ratchets, a quincuncial sleeve and pawls, the annular groove is formed in the shell, the ratchet wheel is rotationally connected into the annular groove, the quincuncial sleeve is fixedly connected to the inner side wall of the ratchet wheel, the ratchets are arranged at the edge of the front end of the ratchet wheel, and a trapezoidal groove is formed in the front end of the shell; the inner wall of the trapezoidal groove is rotationally connected with bilaterally symmetrical pawls through pin shafts, and the upper ends of the pawls are matched with the ratchets; according to the reciprocating ratchet wrench, when a bolt is tightened or loosened, one-way reciprocating tightening is achieved through one-way rotation, the wrench does not need to be turned over, the angle of the grip is adjusted, and when plane operation is conducted, wrist twisting force is reduced, and tenosynovitis or carpal tunnel syndrome which is likely to be caused for a long time is avoided.

Description

Technical Field

[0001] This utility model relates to the field of ratchet wrench technology, specifically a reciprocating ratchet wrench. Background Technology

[0002] A ratchet wrench is a manual screw tightening and loosening tool. Single-headed and double-headed ratchet wrenches in various sizes and with adjustable handles consist of main and secondary sockets of different sizes connected by a hinge key. Because each socket has two sizes of through holes, it can be used to tighten or loosen two types of screws, thus expanding its application range and saving on raw materials and labor costs. The adjustable handle allows for easy adjustment of the wrench's angle. This type of wrench is used for tightening and loosening screws and is characterized by its versatility, ease of use, and low cost. A ratchet wrench is a wrench with a ratchet mechanism that enables quick tightening or loosening of bolts / nuts through a one-way engagement mechanism without repeated disassembly and reassembly. It is particularly suitable for use in space-constrained environments. Internally, it has a ratchet and pawl structure, allowing the handle to rotate in one direction, driving the socket to rotate, while rotating in the opposite direction allows it to idle without moving the wrench.

[0003] In some existing ratchet wrenches, when tightening or loosening a bolt, a socket is placed on the upper end of the bolt, and then the internal ratchet and pawl structure drives the socket to tighten the bolt. When loosening, the socket is removed, the wrench is flipped, and then placed on the upper end of the bolt to loosen it.

[0004] Existing ratchet wrenches of this type have the following problems: when tightening or loosening bolts, they can only rotate in one direction. When tightening or loosening, the wrench needs to be flipped. When working on non-planar surfaces, traditional wrenches force the wrist to twist and exert force, which can easily lead to tenosynovitis or carpal tunnel syndrome in the long run. Therefore, we propose a reciprocating ratchet wrench. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a reciprocating ratchet wrench. When tightening or loosening bolts, it achieves unidirectional reciprocating tightening through unidirectional rotation, without the need to flip the wrench. By adjusting the angle of the handle, it reduces wrist twisting force when working on a flat surface, avoiding the long-term occurrence of tenosynovitis or carpal tunnel syndrome, and can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a reciprocating ratchet wrench, including a housing, the lower end of which is rotatably connected to a handle via a rotating shaft, and also including a rotating assembly and an angle adjustment mechanism;

[0007] Rotating assembly: It includes an annular groove, ratchet, ratchet teeth, a swivel sleeve and a pawl. The annular groove is opened inside the housing. The ratchet is rotatably connected inside the annular groove. The swivel sleeve is fixedly connected to the inner side wall of the ratchet. The ratchet teeth are provided at the edge of the front end of the ratchet. The front end of the housing is opened with a trapezoidal groove. The inner wall of the trapezoidal groove is rotatably connected to symmetrical pawls on both sides through a pin. The upper end of each pawl is installed in conjunction with a ratchet tooth.

[0008] Angle adjustment mechanism: It includes a socket, a rod, a slide plate, and a guide rod. The lower end of the outer shell has evenly distributed sockets. The upper end of the handle has symmetrical guide rods fixedly connected between the front and rear inner walls. The two guide rods are slidably connected between the two guide rods. The front end of the slide plate has a rod. The front end of the rod is installed in conjunction with the socket. When tightening or loosening the bolt, unidirectional rotation is used to achieve unidirectional reciprocating tightening without flipping the wrench. By adjusting the angle of the handle, the wrist twisting force is reduced when working on a flat surface, avoiding the long-term occurrence of tenosynovitis or carpal tunnel syndrome.

[0009] Furthermore, the rotating assembly also includes springs, with symmetrical springs fixedly connected to the outer side of the pawl and the left and right adjacent inner walls of the trapezoidal groove, respectively, to facilitate rebound.

[0010] Furthermore, the rotating assembly also includes an adjusting block and a lever. The adjusting block is rotatably connected to the rear wall of the trapezoidal groove via a rotating column. The lower sides of the left and right ends of the adjusting block are respectively fitted with the inner sides of the laterally adjacent pawls. The front end of the rotating column is fixedly connected to a lever for easy adjustment.

[0011] Furthermore, the angle adjustment mechanism also includes tension springs, and tension springs are respectively sleeved on the outside of the guide rod between the rear end of the slide plate and the rear wall of the upper end of the grip bar to facilitate rebound.

[0012] Furthermore, the angle adjustment mechanism also includes an adjustment component, which includes a trapezoidal block, a roller, a U-shaped block, a support rod, and a sliding plate. The trapezoidal block is located in the middle of the lower end of the slide plate, and the sliding plate is slidably connected to the inside of the grip rod. The support rod is fixedly connected to the upper end of the sliding plate, and the U-shaped block is fixedly connected to the upper end of the support rod. The roller is rotatably connected to the inside of the U-shaped block, and the outer surface of the roller is slidably connected to the inclined surface of the trapezoidal block for easy adjustment.

[0013] Furthermore, the adjustment assembly also includes an internal threaded cylinder, a threaded rod, and a lever. The bottom wall of the grip is rotatably connected to the threaded rod, and the upper end of the threaded rod is threadedly connected to the internal threaded cylinder. The upper end of the internal threaded cylinder is fixedly connected to the lower end of the sliding plate, and a lever is fixedly sleeved on the lower end of the threaded rod for easy adjustment.

[0014] Furthermore, a clearance hole corresponding to the lever is provided on the lower side of the front end of the grip bar to provide clearance.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This reciprocating ratchet wrench has the following advantages:

[0016] 1. Hold the lever and move the lever to the right to disengage the right pawl from the ratchet teeth. The left pawl will then block the ratchet teeth, allowing the ratchet teeth to rotate freely clockwise. Rotating the lever counterclockwise will tighten the bolt. Then, move the lever to the left to reset the position. Adjust the lever to separate the two pawls from the ratchet teeth, allowing the ratchet teeth to rotate freely. Rotate the lever clockwise to reset the position and repeat the operation to further secure the bolt. To disassemble a clockwise bolt, hold the lever and move the lever to the left to disengage the left pawl from the ratchet teeth. The right pawl will then block the ratchet teeth, allowing the ratchet teeth to rotate freely counterclockwise. Rotating the lever clockwise will loosen the bolt. Move the lever to the right to reset the position, separating the two pawls from the ratchet teeth. Rotate the lever counterclockwise to reset the position and repeat the steps to complete the disassembly. When tightening or loosening the bolt, unidirectional rotation allows for unidirectional reciprocating tightening without the need to rotate the wrench.

[0017] 2. To adjust the grip angle, move the lever to the right, causing the threaded rod and internal threaded cylinder to move the sliding plate downwards. This, along with the linkage rod and other components, disengages the roller from the trapezoidal block. The tension spring pulls the slide plate, disengaging the insertion rod from the insertion hole. You can then rotate the grip to adjust the angle. Once the desired angle is achieved, move the lever to the left, causing the components to move upwards. This causes the roller to press against the inclined surface of the trapezoidal block, pushing the slide plate forward. The insertion rod then inserts into the insertion hole, locking the outer casing and grip. By adjusting the grip angle, you can reduce wrist twisting during flat work, preventing the long-term development of tenosynovitis or carpal tunnel syndrome. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the left side of this utility model.

[0021] In the diagram: 1. Outer shell; 2. Rotating assembly; 21. Annular groove; 22. Ratchet; 23. Racket tooth; 24. Plum blossom sleeve; 25. Pad; 26. Spring; 27. Adjusting block; 28. Toggle block; 3. Angle adjustment mechanism; 31. Insertion hole; 32. Insert rod; 33. Tension spring; 34. Slide plate; 35. Guide rod; 37. Adjusting assembly; 371. Trapezoidal block; 372. Roller; 373. U-shaped block; 374. Support rod; 375. Sliding plate; 376. Internal threaded cylinder; 377. Threaded rod; 378. Toggle lever; 4. Clearance hole; 5. Rotating shaft; 6. Grip lever. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3 This embodiment provides a technical solution: a reciprocating ratchet wrench, including a housing 1, with a handle 6 rotatably connected to the lower end of the housing 1 via a rotating shaft 5, and also including a rotating assembly 2 and an angle adjustment mechanism 3;

[0024] Rotating assembly 2 includes an annular groove 21, a ratchet 22, ratchet teeth 23, a perforated sleeve 24, and pawls 25. The annular groove 21 is formed inside the outer casing 1, and the ratchet 22 is rotatably connected inside the annular groove 21. The perforated sleeve 24 is fixedly connected to the inner wall of the ratchet 22. Ratchet teeth 23 are provided at the edge of the front end of the ratchet 22. A trapezoidal groove is formed at the front end of the outer casing 1, and symmetrical pawls 25 are rotatably connected to the inner wall of the trapezoidal groove via pins. The upper ends of the pawls 25 are fitted with ratchet teeth 23. Rotating assembly 2 also includes springs 26, with symmetrically connected head springs 26 fixedly between the outer side of the pawls 25 and the adjacent inner walls of the trapezoidal groove. Rotating assembly 2 also includes an adjusting block 27 and a lever 28. The adjusting block 27 is rotatably connected via a rotating column. The adjusting block 27 is attached to the rear wall of the trapezoidal groove. The lower sides of the left and right ends of the adjusting block 27 are respectively installed to cooperate with the inner sides of the adjacent lateral pawls 25. The front end of the rotating column is fixedly connected to the lever block 28. When using the ratchet wrench, the box socket 24 is placed on the upper end of the bolt. When the adjusting block 27 is in the center, the lower corners of the two sides of the lower end of the adjusting block 27 simultaneously squeeze the two pawls 25, causing the two pawls 25 to separate from the ratchet 23. At this time, the ratchet 23 can rotate in both directions without restriction. When the adjusting block 27 is biased to one side, it further squeezes the pawl 25 on that side, while the pawl 25 on the other side recovers without restriction. The spring 26 drives the pawl 25 on the other side to rebound and engage the ratchet 23. When the left pawl 25 rebounds and engages the ratchet 23, the right pawl 25... When the ratchet 23 is disengaged from the pawl 5, the ratchet 23 can rotate freely clockwise but cannot rotate counterclockwise. At this time, gripping the lever 6 and rotating the spline sleeve 24 counterclockwise tightens the bolt. When the right pawl 25 springs back and engages the ratchet 23, and the left pawl 25 disengages from the ratchet 23, the ratchet 23 can rotate freely counterclockwise but cannot rotate clockwise. At this time, gripping the lever 6 and rotating the spline sleeve 24 clockwise tightens the bolt. When an external bolt needs to be installed counterclockwise, grip the lever 6 and then move the lever 28 counterclockwise to the right. The lever 28 will move the right pawl 25 via the adjusting block 27, causing the right pawl 25 to disengage from the ratchet 23. The upper right side of the left pawl 25... The ratchet 23 will be blocked, allowing it to rotate freely clockwise but not counterclockwise. When the lever 6 is held and the socket 24 rotates counterclockwise, the bolt can be tightened. Then, the lever 28 is rotated clockwise to the left to adjust the lower side. When the adjusting block 27 is in the center, the lower corners of both sides of the adjusting block 27 simultaneously press against the two pawls 25, separating them from the ratchet 23. At this point, the ratchet 23 can rotate freely in both directions. The lever 6 is then rotated clockwise to reset the bolt. The above steps are then repeated to further tighten the bolt threads. When external bolts need to be removed clockwise, the lever 6 is held, and the lever 28 is moved clockwise to the left. The lever 28 will then move the left pawl 25 via the adjusting block 27.The left pawl 25 will disengage from the ratchet 23, while the upper end of the right pawl 25 will block the ratchet 23. The ratchet 23 can rotate freely counterclockwise but cannot rotate clockwise. At this time, when the hand grips the lever 6 and rotates the spline sleeve 24 clockwise, the bolt can be loosened. Then, the lever 28 is rotated clockwise to the right. When the adjusting block 27 is in the center, the lower corners on both sides of the lower end of the adjusting block 27 simultaneously press the two pawls 25, causing the two pawls 25 to separate from the ratchet 23. At this time, the ratchet 23 can rotate in both directions without restriction. The hand grips the lever 6 and rotates counterclockwise to reset. Then, the above steps are repeated to further loosen the threads of the bolt.

[0025] Angle adjustment mechanism 3 includes a socket 31, a rod 32, a slide plate 34, and a guide rod 35. The lower end of the outer casing 1 has evenly distributed sockets 31. Symmetrical guide rods 35 are fixedly connected between the front and rear inner walls of the upper end of the grip 6. A slide plate 34 is slidably connected between the two guide rods 35. A rod 32 is located at the center of the front end of the slide plate 34, and the front end of the rod 32 is fitted into the socket 31. The angle adjustment mechanism 3 also includes a tension spring 33. Tension springs 33 are respectively fitted onto the outer side of the guide rods 35 between the rear end of the slide plate 34 and the rear wall of the upper end of the grip 6. The angle adjustment mechanism 3 also includes an adjustment assembly 37, which includes a trapezoidal block 371, a roller 372, a U-shaped block 373, and a support. The lever 374 and sliding plate 375 are connected. A trapezoidal block 371 is provided in the middle of the lower end of the sliding plate 34. The sliding plate 375 is slidably connected inside the grip lever 6. A support rod 374 is fixedly connected to the upper end of the sliding plate 375. A U-shaped block 373 is fixedly connected to the upper end of the support rod 374. A roller 372 is rotatably connected inside the U-shaped block 373. The outer surface of the roller 372 is slidably connected to the inclined surface of the trapezoidal block 371. The adjustment assembly 37 also includes an internal threaded cylinder 376, a threaded rod 377, and a lever 378. A threaded rod 377 is rotatably connected to the bottom wall of the grip lever 6. An internal threaded cylinder 376 is threadedly connected to the upper end of the threaded rod 377. The upper end of the internal threaded cylinder 376 is fixedly connected to the lower end of the sliding plate 375. The threaded rod 376... A lever 378 is fixedly fitted on the lower end of the grip 6. A clearance hole 4 corresponding to the lever 378 is provided on the lower side of the front end of the grip 6. When the angle of the grip 6 needs to be adjusted, the lever 378 is first moved to the right. The lever 378 will drive the threaded rod 377 to rotate. The rotation of the threaded rod 377 will drive the internal threaded cylinder 376 to rotate and move downward, thereby driving the sliding plate 375 to move downward inside the rectangular groove inside the grip 6. The sliding plate 375 will drive the support rod 374, U-shaped block 373 and roller 372 to move downward, thereby causing the trapezoidal block 371 to disengage from the obstruction of the roller 372. Under the rebound of the tension spring 33, the trapezoidal block 371 will pull the slide plate 34 to move backward, thereby driving the insertion rod 3 2. Disconnect from the socket 31, then rotate the grip lever 6 counterclockwise or clockwise. After adjusting to a suitable angle, move the lever 378 to the left. The lever 378 drives the sliding plate 375 upward through the threaded rod 377 and the internal threaded cylinder 376. This causes the roller 372 to contact the inclined surface of the trapezoidal block 371 through the support rod 374 and the U-shaped block 373. The outer surface of the roller 372 will press against the inclined surface of the trapezoidal block 371. The roller 372 will slide to the highest point of the trapezoidal block 371. Then, the trapezoidal block 371 will drive the slide plate 34 to move forward between the two guide rods 35. This will drive the insertion rod 32 to be inserted into the socket 31, thereby locking the outer shell 1 and the grip lever 6.

[0026] The working principle of the reciprocating ratchet wrench provided by this utility model is as follows: When using the ratchet wrench, when the external bolt needs to be installed counterclockwise, hold the handle 6 and then turn the lever 28 counterclockwise to the right. The lever 28 will move the right pawl 25 through the adjusting block 27. The right pawl 25 will disengage from the ratchet 23, and the right side of the upper end of the left pawl 25 will block the ratchet 23. The ratchet 23 can rotate freely clockwise, but cannot rotate counterclockwise. At this time, when the handle 6 drives the box socket 24 to rotate counterclockwise, the bolt can be tightened. Then, turn the lever 28 clockwise to the left to tighten the bolt. At this time, when the adjusting block 27 is in the center, the lower corners of both sides of the lower end of the adjusting block 27 simultaneously squeeze the two pawls 25, causing the two pawls to tighten. Pawl 25 separates from ratchet 23. At this point, ratchet 23 can rotate freely in both directions. Hold lever 6 and return it to its original position clockwise. Then repeat the above steps to further tighten the bolt threads. When external bolts need to be removed or installed clockwise, hold lever 6 and then turn lever 28 clockwise to the left. Lever 28 will move the left pawl 25 via adjusting block 27. The left pawl 25 will disengage from ratchet 23, while the upper end of the right pawl 25 will block ratchet 23. Razor 23 can rotate freely counterclockwise but not clockwise. At this point, holding lever 6 and rotating the spline sleeve 24 clockwise will loosen the bolt. Then, turn lever 28 clockwise to the right to adjust the lower side. When adjusting block 27 is in the center, adjust... The lower corners of both sides of the lower end of block 27 simultaneously press the two pawls 25, causing the two pawls 25 to separate from the ratchet 23. At this time, the ratchet 23 can rotate in both directions without restriction. Hold the lever 6 and rotate it counterclockwise to reset it. Then repeat the above steps to further separate the threads of the bolt. When it is necessary to adjust the angle of the lever 6, first move the lever 378 to the right. The lever 378 will drive the thread rod 377 to rotate. The rotation of the thread rod 377 will drive the internal thread cylinder 376 of the thread to rotate and move downward. This will drive the sliding plate 375 to move downward inside the rectangular groove inside the lever 6. The sliding plate 375 will drive the support rod 374, U-shaped block 373 and roller 372 to move downward. Then the trapezoidal block 371 will disengage from the obstruction of the roller 372. Block 371, under the rebound of tension spring 33, pulls the slide plate 34 backward, thereby causing the insertion rod 32 to disengage from the insertion hole 31. Then, by gripping the handle 6 and rotating it counterclockwise or clockwise, and adjusting to a suitable angle, the lever 378 is moved to the left. The lever 378, through the threaded rod 377 and the internal threaded cylinder 376, causes the sliding plate 375 to move upward, thereby causing the roller 372 to contact the inclined surface of the trapezoidal block 371 through the support rod 374 and the U-shaped block 373. The outer surface of the roller 372 will press against the inclined surface of the trapezoidal block 371, and the roller 372 will slide to the highest point of the trapezoidal block 371. Then, through the trapezoidal block 371, the slide plate 34 moves forward between the two guide rods 35, thereby causing the insertion rod 32 to be inserted into the insertion hole 31.This will then lock the outer casing 1 and the grip 6.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A reciprocating ratchet wrench, comprising a housing (1), wherein a handle (6) is rotatably connected to the lower end of the housing (1) via a rotating shaft (5), characterized in that: It also includes a rotating assembly (2) and an angle adjustment mechanism (3); Rotating assembly (2): It includes an annular groove (21), ratchet (22), ratchet tooth (23), plum blossom sleeve (24) and pawl (25). The annular groove (21) is provided inside the outer shell (1). The ratchet (22) is rotatably connected inside the annular groove (21). The plum blossom sleeve (24) is fixedly connected to the inner side wall of the ratchet (22). The ratchet tooth (23) is provided at the edge of the front end of the ratchet (22). The front end of the outer shell (1) is provided with a trapezoidal groove. The inner wall of the trapezoidal groove is rotatably connected to the left and right symmetrical pawls (25) through a pin. The upper end of the pawl (25) is installed in conjunction with the ratchet tooth (23). Angle adjustment mechanism (3): It includes a socket (31), a rod (32), a slide plate (34) and a guide rod (35). The lower end of the outer shell (1) is provided with evenly distributed sockets (31). The upper end of the grip (6) is fixedly connected with left and right symmetrical guide rods (35). The two guide rods (35) are slidably connected between the two guide rods (35). The front end of the slide plate (34) is provided with a rod (32). The front end of the rod (32) is installed in conjunction with the socket (31).

2. A reciprocating ratchet wrench according to claim 1, characterized in that: The rotating assembly (2) also includes a spring (26), and the outer side of the pawl (25) and the adjacent inner walls of the trapezoidal groove are respectively fixedly connected to the upper and lower symmetrical springs (26).

3. A reciprocating ratchet wrench according to claim 2, characterized in that: The rotating assembly (2) also includes an adjusting block (27) and a lever (28). The adjusting block (27) is rotatably connected to the rear wall of the trapezoidal groove via a rotating column. The lower sides of the left and right ends of the adjusting block (27) are respectively fitted with the inner sides of the laterally adjacent pawls (25). The front end of the rotating column is fixedly connected to the lever (28).

4. A reciprocating ratchet wrench according to claim 1, characterized in that: The angle adjustment mechanism (3) also includes a tension spring (33), and tension springs (33) are respectively sleeved on the outside of the guide rod (35) between the rear end of the slide plate (34) and the rear wall of the upper end of the grip (6).

5. A reciprocating ratchet wrench according to claim 4, characterized in that: The angle adjustment mechanism (3) further includes an adjustment component (37), which includes a trapezoidal block (371), a roller (372), a U-shaped block (373), a support rod (374), and a sliding plate (375). The middle part of the lower end of the slide plate (34) is provided with a trapezoidal block (371). The inside of the grip (6) is slidably connected to the sliding plate (375). The upper end of the sliding plate (375) is fixedly connected to the support rod (374). The upper end of the support rod (374) is fixedly connected to the U-shaped block (373). The inside of the U-shaped block (373) is rotatably connected to the roller (372). The outer surface of the roller (372) is slidably connected to the inclined surface of the trapezoidal block (371).

6. A reciprocating ratchet wrench according to claim 5, characterized in that: The adjustment assembly (37) further includes an internal threaded cylinder (376), a threaded rod (377), and a lever (378). The bottom wall of the grip (6) is rotatably connected to the threaded rod (377). The upper end of the threaded rod (377) is threadedly connected to the internal threaded cylinder (376). The upper end of the internal threaded cylinder (376) is fixedly connected to the lower end of the sliding plate (375). The lever (378) is fixedly sleeved on the lower end of the threaded rod (377).

7. A reciprocating ratchet wrench according to claim 6, characterized in that: The lower side of the front end of the grip (6) is provided with a clearance hole (4) corresponding to the lever (378).

Images