Reversing wrench

Abstract

The utility model relates to a reversing wrench, and belongs to the technical field of manual tools. The wrench comprises a handle, a wrench head and a reversing mechanism, a handle head is arranged at one end of the handle, a wrench head mounting hole for mounting the reversing mechanism is formed in the handle head, the wrench head comprises a wrench head using part and a wrench head mounting shaft part, the wrench head mounting shaft part is located in the wrench head mounting hole, and at least one limiting abutting face is formed on the peripheral face of the wrench head mounting shaft part. A pin roller containing cavity is formed between the limiting abutting face and the hole wall of the plate head installation hole, the reversing mechanism comprises a pin roller, a reversing main body plate and a pushing claw, the reversing main body plate is rotationally installed on the plate head installation shaft part, the pin roller is located in the pin roller containing cavity, and the pushing claw is fixed to the reversing main body plate and extends into the pin roller containing cavity. The width of the two sides of the roller containing cavity is smaller than the diameter of the roller, an elastic piece is installed on the pushing claw and comprises an installation part and an elastic part, and the elastic part is located on the side face, facing the roller, of the pushing claw. The elastic piece has the effect that the elastic piece is more convenient to produce, disassemble and assemble.

Description

Technical Field

[0001] This application relates to the field of hand tools, and in particular to a reversing wrench. Background Technology

[0002] A quick-release wrench, also called a reversible wrench, is a type of wrench that can move a screw in one direction and then return to its initial position for rapid operation. Existing roller-type one-way wrenches use a roller receiving groove formed by a limiting plane on the outer circumference of the wrench head and the wall of the wrench head mounting hole on the handle head, creating a space between the roller and the wrench head. When the distance between the wrench head mounting hole wall and the limiting plane is less than the diameter of the roller, the roller can contact both the wrench head mounting hole wall and the limiting plane, forming a working position that prevents relative rotation between the wrench head and the handle. In this position, the direction of rotation of the wrench handle is the working direction. When the distance between the wrench head mounting hole wall and the limiting plane is greater than the diameter of the roller, the roller cannot contact both the wrench head mounting hole wall and the limiting plane, creating a gap where the roller cannot prevent relative rotation between the wrench head and the handle. In this position, the direction of rotation of the wrench handle is opposite to the working direction. When using the wrench, simply swinging the handle back and forth allows the roller to move between the working position and the gap, thus turning the screw in one direction.

[0003] Due to the structural characteristics of the roller receiving groove, there is a distance between the working position and the idle position. The movement of the roller inevitably leads to a lack of timely contact between the roller and the wall of the wrench mounting hole and the limiting plane, resulting in a free-spinning stroke during handle rotation. This also easily leads to poor contact between the roller and the wall of the wrench mounting hole and the limiting plane during working rotation, causing the wrench to jump and bounce, or even resulting in the entire stroke being a free-spinning motion. The collision of the moving rollers also easily generates noise and causes wear. To solve these problems, existing technology has a reversing mechanism that uses a spring plate to abut against the roller to reduce the free-spinning stroke. The spring plate is set on the injection-molded reversing push claw as an insert. However, such a reversing push claw is inconvenient to manufacture and has low strength. Utility Model Content

[0004] The purpose of this utility model is to solve the defects of existing reversing wrenches, such as low strength of the reversing mechanism and inconvenient processing. Therefore, this application provides a reversing wrench that is simple to manufacture and easy to install. The technical solution adopted is as follows:

[0005] A reversing wrench includes a handle, a wrench head, and a reversing mechanism. One end of the handle is a handle head, which has a wrench head mounting hole for mounting the reversing mechanism. The wrench head includes a wrench head serving portion and a wrench head mounting shaft portion. The wrench head mounting shaft portion is located within the wrench head mounting hole. At least one limiting abutment surface is formed on the outer circumferential surface of the wrench head mounting shaft portion. A roller receiving cavity is formed between the limiting abutment surface and the wall of the wrench head mounting hole. The reversing mechanism includes rollers, a reversing main plate, and a pusher pawl. The reversing main plate is rotatably mounted on the wrench head. On the plate head mounting shaft, the roller is located in the roller receiving cavity and can move circumferentially along the plate head mounting hole within the roller receiving cavity. The push pawl is fixed to the reversing main plate and extends into the roller receiving cavity to control the roller to move to the corresponding position. The width of both sides of the roller receiving cavity is smaller than the diameter of the roller. An integrally formed elastic sheet is mounted on the push pawl. The elastic sheet includes a mounting part and an elastic part. The mounting part is wrapped and fixed to the push pawl, and the elastic part is located on the side of the push pawl facing the roller.

[0006] By adopting the above technical solution, and by setting an elastic plate on the pusher claw, when in working condition, the elastic plate pushes the roller to always be in a state of abutting the hole wall and limiting abutment surface of the plate head mounting hole, thereby restricting the rotation of the plate head in one direction on the handle. When the handle rotates in the opposite direction, the roller can squeeze the elastic plate to deform, so that it can be better in the idling state. When the handle is reset and work continues, the elastic plate pushes the roller to reset immediately, reducing the response time of the roller and improving stability. The roller is always in a suitable position to play its corresponding role. At the same time, it is quieter to use. By using a stamped elastic plate instead of an injection molded elastic plate, the strength of the elastic plate is improved, the manufacturing difficulty is reduced, and the installation and removal of the elastic plate are also more convenient.

[0007] Optionally, the elastic piece includes a mounting portion and elastic portions connected to both sides of the mounting portion, the elastic portions extending over both sides of the push claw.

[0008] By adopting the above technical solution, the elastic parts on both sides of the push claw are integrated through the mounting part, making the positions of the two sides of the elastic sheet more corresponding and the installation more convenient. The two elastic parts of the elastic sheet correspond to the rollers of the two working positions.

[0009] Optionally, the elastic sheet partially surrounds and fixes itself to the push claw.

[0010] By adopting the above technical solution, the semi-enclosed installation method of the elastic sheet makes installation and replacement more convenient.

[0011] Optionally, the push claw has an installation groove for the elastic sheet to be wrapped and secured.

[0012] By adopting the above technical solution, the elastic sheet can remain firmly installed even when it is partially surrounded by the pusher claw.

[0013] Optionally, the elastic part is V-shaped and its opening faces the adjacent roller, and the elastic part is located in a different ring from the push claw along the circumferential direction of the plate head mounting hole.

[0014] By adopting the above technical solution, the V-shaped elastic part can better abut against the roller. At the same time, the elastic part can push the roller to the appropriate position through the deformation of the opening and contraction. The roller can also squeeze the elastic part to deform. The structure is simple and effective. At the same time, the pushing claw and the elastic part are located in different layers, so that the elastic part as a whole also has space for elastic deformation, reducing the elastic modulus and further improving the adaptability of the roller. After the elastic part is deformed, it can also better maintain the connection structure strength with the pushing claw.

[0015] Optionally, the reversing main plate has a reversing mounting hole through which the plate head mounting shaft passes, the reversing main plate is axially limited on the plate head mounting shaft by a snap ring, and at least one force-applying protrusion is eccentrically provided on the reversing main plate.

[0016] By adopting the above technical solution, the reversing main plate is fixed on the plate head mounting shaft, ensuring stability during use. The force-applying protrusion facilitates the rotation operation of the reversing main plate.

[0017] Optionally, the reversing main plate includes an end cover and a conversion plate, the push claw is disposed on the conversion plate, the end cover has an installation groove for the conversion plate to be interference-fitted, and the conversion plate has a limiting protrusion that is inserted into the end cover.

[0018] By adopting the above technical solution, the reversing body is set into two parts: an end cover and a conversion plate. Each part is formed independently, making processing more convenient. The conversion plate can be stamped and formed. Then, the thickness of the reversing body is increased by the end cover, and the protrusion is restricted. This makes the circumferential restriction between the end cover and the conversion plate stronger, making it less likely to slip when the reversing body is rotated through the end cover, resulting in a more stable working state of the conversion plate head.

[0019] Optionally, the end cap is injection molded onto the conversion plate, and the limiting protrusion extends obliquely into the interior of the end cap.

[0020] By adopting the above technical solution, the end cap is injection molded onto the conversion plate, resulting in better overall integrity and lighter weight of the reversing body. The restriction on the protrusions extending obliquely into the end cap provides better circumferential restriction between the end cap and the conversion plate, and also makes it less likely for the end cap to detach from the conversion plate, resulting in higher connection strength between the end cap and the conversion plate.

[0021] Optionally, the conversion plate and the pusher claw are integrally formed by stamping, the limiting protrusion is formed by stamping and shearing on the conversion plate, the conversion plate is fixed to the end cap by inlay injection molding, and the limiting protrusion is embedded in the end cap.

[0022] By adopting the above technical solution, the entire conversion plate and its pushing claws and limiting protrusions are easy to form and easy to produce. After the limiting protrusions are stamped and sheared, they are fixed inside the end cover, which further improves the connection strength between the end cover and the conversion plate.

[0023] Optionally, the reversing wrench further includes a reversing locking mechanism, which includes a stamped positioning groove and a center hole, as well as a matching ball spring plunger. The positioning groove and the center hole are formed on the conversion plate, and the ball spring plunger is installed on the plate head mounting shaft. The positioning groove has two corresponding working positions for the ball spring plunger to be inserted, and the center hole has a corresponding empty position for the ball spring plunger to be inserted.

[0024] By adopting the above technical solution, the ball-end spring plunger allows the reversing body to rotate more smoothly while maintaining greater stability relative to the plate head mounting shaft, reducing wear and lowering the probability of misalignment. The positioning groove and center hole, in conjunction with the ball-end spring plunger, can better control the wrench to be in a certain working position or neutral position.

[0025] In summary, by setting an elastic plate on the pusher claw, when in working condition, the elastic plate pushes the roller to always be in contact with the hole wall and the limiting contact surface of the plate head mounting hole, thereby limiting the rotation of the plate head in one direction on the handle. When the handle rotates in the opposite direction, the roller can compress the elastic plate to deform, thus better maintaining the idling state. When the handle returns to its original position and continues to work, the elastic plate pushes the roller to return to its original position immediately, reducing the roller's response time and improving stability. The roller is always in the appropriate position to perform its corresponding function, and it is also quieter during use. Replacing the elastic plate of the injection molded part with the elastic plate of the stamped part improves the strength of the elastic plate, reduces the manufacturing difficulty, and makes the installation and removal of the elastic plate more convenient. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the reversing wrench in the embodiments of this application.

[0027] Figure 2 This is a schematic diagram of the handle head and mounting bracket in the embodiments of this application.

[0028] Figure 3 This is an exploded view of the mounting structure of the handle head and mounting bracket in the embodiments of this application.

[0029] Figure 4This is a schematic diagram of the mating structure between the plate head and the handle head in an embodiment of this application.

[0030] Figure 5 This is a top view of the mating structure of the roller, elastic sheet, and pusher claw in the embodiments of this application.

[0031] Figure 6 This is a schematic diagram of the structure of the plate head in an embodiment of this application.

[0032] Figure 7 This is a schematic diagram of the reversing main plate in the embodiments of this application.

[0033] Figure 8 This is a schematic diagram of the conversion plate in the embodiments of this application.

[0034] Figure 9 This is a cross-sectional view of the anti-detachment mechanism in the embodiments of this application.

[0035] Explanation of reference numerals in the attached drawings: 1. Handle; 11. Handle head; 12. Plate head mounting hole; 2. Plate head; 21. Plate head user part; 22. Plate head mounting shaft part; 23. Limiting contact surface; 24. Center hole; 241. Spring receiving cavity section; 242. Guide hole section; 3. Reversing mechanism; 31. Roller; 32. Reversing main plate; 321. End cap; 3211. Force application protrusion; 322. Conversion plate; 3221. Restriction protrusion; 3222, Positioning groove; 3223, Center hole; 323, Mounting groove; 33, Push claw; 331, Mounting groove; 34, Elastic sheet; 341, Elastic part; 342, Mounting part; 4, Mounting bracket; 5, Snap ring; 6, Roller receiving cavity; 7, Ball head spring plunger; 8, Anti-detachment mechanism; 81, Guide post; 811, Head section; 812, Guide shaft section; 813, Stepped groove; 82, Steel ball; 83, Spring. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0037] This application discloses a reversing wrench.

[0038] Reference Figure 1A reversing wrench includes a handle 1, a wrench head 2, a reversing mechanism 3, and a mounting bracket 4. The handle 1 is generally elongated, with one end designated as a handle head 11, which is annular. The remaining portion of the handle 1 is cylindrical, and its diameter is smaller than the internal diameter of the handle head 11. The mounting bracket 4 is fixed to an opening on one side of the handle head 11. The other side of the handle head 11 forms a wrench head mounting hole 12 for mounting the reversing mechanism 3. The wrench head mounting hole 12 is a stepped hole, and the diameter of the side of the wrench head mounting hole 12 furthest from the mounting bracket 4 is larger. The mounting bracket 4 is also annular, with a groove on its outer wall and a groove on the inner wall of the handle head 11. The mounting bracket 4 and the handle head 11 are axially limited by a retaining spring 5, thus fixing the mounting bracket 4 to the handle head 11.

[0039] The board head 2 includes a board head usage part 21 and a board head mounting shaft part 22. The board head usage part 21 has a square cross-section, passes through the mounting bracket 4, and is located outside the handle head 11. The part of the board head mounting shaft part 22 near the board head usage part 21 is cylindrical and is located in the middle hole of the mounting bracket 4. The lower part of the part of the board head mounting shaft part 22 located in the board head mounting hole 12 is a regular hexagonal prism and is larger than the middle hole of the mounting bracket 4. The mounting bracket 4 supports the board head mounting shaft part 22. The board head usage part 21 and the mounting bracket 4 are locked together by a snap ring 5, so that the board head 2 cannot be detached from the mounting bracket 4.

[0040] The six sidewalls on the outer side of the hexagonal prism-shaped portion of the plate head mounting shaft 22 are set as limiting abutment surfaces 23. A roller receiving cavity 6 is formed between each limiting abutment surface 23 and the hole wall of the plate head mounting hole 12, for a total of six roller receiving cavities 6. The reversing mechanism 3 includes rollers 31, a reversing main plate 32 and a pusher pawl 33. The reversing main plate 32 is rotatably mounted on the plate head mounting shaft 22. Specifically, the reversing main plate 32 has a hole through which the upper part of the plate head mounting shaft 22 passes, so that the reversing main plate 32 is fitted onto the plate head mounting shaft 22. The part of the plate head mounting shaft 22 for mounting the reversing main plate 32 is cylindrical. At the same time, the plate head mounting shaft 22 and the reversing main plate 32 are also axially limited by a retaining spring 5, so that the reversing main plate will not detach from the plate head mounting shaft 22.

[0041] The three retaining rings 5 ​​mentioned above ultimately lock the handle head 11, mounting bracket 4, plate head 2, and reversing main plate 32 together to form a stable installation unit.

[0042] The pusher pawl 33 is fixed to the reversing main plate 32 and extends in a square shape perpendicular to the surface of the reversing main plate 32. The reversing main plate 32 is inserted into the larger diameter portion of the plate head mounting hole 12, and the hole wall of the smaller diameter portion of the plate head mounting hole 12 cooperates with the limiting abutment surface 23 to form the roller receiving cavity 6. Since there are six roller receiving cavities 6, there are also six pusher pawls 33, which are equally spaced at angles. There are also six rollers 31, which are correspondingly arranged in the six roller receiving cavities 6. 3. The roller 31 is inserted into the roller receiving cavity 6. There is a roller 31 between each pair of adjacent push claws 33. The roller 31 is controlled by the push claw 33 to move to the corresponding position. The width in the middle of the roller receiving cavity 6 is greater than the diameter of the roller 31, so that when the roller 31 is in the middle of the roller receiving cavity 6, the plate head 2 can rotate freely relative to the handle 1. The width on both sides of the roller receiving cavity 6 is less than the diameter of the roller 31. At the same time, the limiting contact surface 23 has a groove in the middle, so that the roller 31 can better maintain the free rotation state of the plate head 2 when it is in the middle of the limiting contact surface 23.

[0043] An elastic plate 34 is mounted on the pusher claw 33. The elastic plate 34 includes a mounting part 342 and elastic parts 341 connected to both sides of the mounting part 342. The two elastic parts 341 are radially symmetrically arranged relative to the reversing main plate 32. The two elastic parts 341 face the rollers 31 on both sides of the pusher claw 33. The mounting part 342 in the middle of the elastic plate is mounted on the pusher claw 33. The elastic plate 34 is integrally formed by stamping and semi-encloses and is fixed to the pusher claw 33. The pusher claw 33 has a clamping opening for the elastic plate 34 to be wrapped and secured. The mounting groove 331 is filled with the mounting portion 342 in the middle of the elastic piece 34, which is wrapped and embedded in the mounting groove 323. At the same time, the elastic portion 341 is V-shaped and the opening faces the adjacent roller 31. The elastic portion 341 is located in a different layer from the push claw 33 along the circumferential direction of the mounting hole 12 of the plate head. That is, the elastic portion 341 is formed after the push claw 33 extends from the middle of the elastic piece 34 toward the limiting abutment surface 23. The part of the elastic piece 34 extending toward the limiting abutment surface 23 is concave to restrict the elastic piece 34 from disengaging from the push claw 33.

[0044] The reversing main plate 32 includes an end cover 321 and a conversion plate 322. The end cover 321 has a mounting groove 323 for the conversion plate 322 to be interference-fitted. Specifically, the end cover 321 is injection molded onto the conversion plate 322 to form a whole, and the end cover 321 covers the outer peripheral wall of the conversion plate 322. The conversion plate 322 has a protruding limiting protrusion 3221 that is inserted into the end cover 321, and the limiting protrusion 3221 extends obliquely into the end cover 321. Specifically, the conversion plate 322 is stamped and integrally formed, and the conversion plate 322 has a V-shaped limiting protrusion 3221 that is stamped and sheared and enters the end cover 321 to achieve fastening between the end cover 321 and the conversion plate 322.

[0045] The push claw 33 is mounted on the conversion plate 322, and the push claw 33 is integrally formed together with the conversion plate 322 during the stamping process.

[0046] The mounting shaft 22 of the wrench is provided with a ball spring plunger 7. The ball head of the ball spring plunger 7 elastically abuts against the conversion plate 322. The conversion plate 322 is provided with a positioning groove 3222 and a center hole 3223 on the plate surface away from the end cover 321 for the ball head of the ball spring plunger 7 to be inserted. There are three ball spring plungers 7. The three ball spring plungers 7 are arranged at equal angular intervals around the axis of the wrench 2. There are six corresponding positioning grooves 3222. Two positioning grooves 3222 form a group. The two positioning grooves 3222 of a group of positioning grooves 3222 correspond to the different positions of one ball spring plunger 7 when the reversing body is rotated to two working states. There are three center holes 3223. When the three ball spring plungers 7 correspond to the three center holes 3223, the wrench is in a free rotation state in the neutral position.

[0047] As described above, the positioning groove 3222 and the center hole 3223 are stamped together with the conversion plate 322, and the positioning groove 3222 and the center hole 3223, together with the ball spring plunger 7, form the reversing locking mechanism of the wrench.

[0048] The end cap 321 is eccentrically provided with at least one force-applying protrusion 3211 away from the surface of the conversion plate 322. In this embodiment, there are two force-applying protrusions 3211 and they are arranged symmetrically to facilitate the rotation operation of the reversing main plate 32.

[0049] The wrench head 2 is also equipped with an anti-detachment mechanism 8, which includes a guide post 81, a steel ball 82, and a spring 83. The wrench head is provided with an axial central hole 24, which is a stepped hole, including a large-diameter spring receiving cavity section 241 and a small-diameter guide hole section 242. The wrench head user part 21 is provided with a radial through hole for the steel ball 82 that communicates with the guide hole section 242. The steel ball 82 is located at the junction of the steel post through hole and the guide hole section 242, and part of the steel ball 82 can protrude from the steel post through hole to the outside of the wrench head user part 21. The guide post 81 is a stepped shaft, including a large-diameter head section 811 and a small-diameter guide shaft section 812. The guide shaft section 812 has a stepped groove 813. The guide post 81 is inserted into the central hole 24 of the wrench head. The steel ball 82 is housed in the stepped groove 813. The spring 83 is fitted onto the guide shaft section 812 and housed in the spring receiving cavity section 241 of the center hole 24. It is limited by the axial end face of the center hole 24 and the two ends of the shoulder of the guide post 81. The spring 83 axially supports the guide post 81, so that the higher bottom surface of the stepped shaft supports the steel ball 82, causing the steel ball 82 to protrude outward from the outer peripheral surface of the wrench head through the through hole of the steel ball 82. When the wrench head is connected to the workpiece, the workpiece presses inward against the steel ball 82. The steel ball 82 rolls against the stepped groove 813, causing the guide post 81 to move axially. The steel ball 82 enters the lower bottom of the stepped groove 813. The head of the guide post 81 presses against the spring 83, causing the spring 83 to generate elastic force, providing the restoring force of the guide post 81 to support the outward protrusion of the steel ball 82 when the wrench head is separated from the workpiece.

[0050] The implementation principle of a reversing wrench in this application embodiment is as follows: the pusher pawl 33 pushes the roller 31 to the working position through the elastic plate 34. When in the working state, the elastic plate 34 pushes the roller 31 to always be in the state of abutting the hole wall of the plate head mounting hole 12 and the limiting abutment surface 23, thereby restricting the rotation of the plate head 2 in one direction on the handle 1. When the handle 1 rotates in the opposite direction, the roller 31 can squeeze the elastic plate 34 to deform, so that it can be better in the idling state. When the handle 1 is reset and continues to work, the elastic plate 34 pushes the roller 31 to reset immediately. The roller 31 is always in a suitable position to play the corresponding role.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A reversing wrench, characterized in that: The device includes a handle (1), a plate head (2), and a reversing mechanism (3). One end of the handle (1) is a handle head (11), and the handle head (11) has a plate head mounting hole (12) for mounting the reversing mechanism (3). The plate head (2) includes a plate head using part (21) and a plate head mounting shaft part (22). The plate head mounting shaft part (22) is located inside the plate head mounting hole (12). At least one limiting abutment surface (23) is formed on the outer peripheral surface of the plate head mounting shaft part (22). A roller receiving cavity (6) is formed between the limiting abutment surface (23) and the hole wall of the plate head mounting hole (12). The reversing mechanism (3) includes a roller (31), a reversing main plate (32), and a pusher (33). The reversing main plate (32) is rotatably mounted on the plate head mounting hole (12). On the mounting part (22), the roller (31) is located in the roller receiving cavity (6) and can move circumferentially along the plate head mounting hole (12) in the roller receiving cavity (6). The push claw (33) is fixed to the reversing main plate (32) and extends into the roller receiving cavity (6) to control the roller (31) to move to the corresponding position. The width of both sides of the roller receiving cavity (6) is smaller than the diameter of the roller (31). An integrally formed elastic sheet (34) is installed on the push claw (33). The elastic sheet (34) includes a mounting part (342) and an elastic part (341). The mounting part (342) is wrapped and fixed to the push claw (33). The elastic part (341) is located on the side of the push claw (33) facing the roller (31).

2. A reversing wrench according to claim 1, characterized in that: The elastic plate (34) includes a mounting portion (342) and elastic portions (341) connected to both sides of the mounting portion (342), the elastic portions (341) extending over both sides of the push claw (33).

3. A reversing wrench according to claim 1, characterized in that: The elastic sheet (34) partially surrounds and is fixed to the push claw (33).

4. A reversing wrench according to claim 3, characterized in that: The push claw (33) has an installation groove (331) for the elastic sheet (34) to be wrapped and fitted.

5. A reversing wrench according to claim 1, characterized in that: The elastic part (341) is V-shaped and its opening faces the adjacent roller (31). The elastic part (341) is located in a different ring from the pusher claw (33) along the circumferential direction of the plate head mounting hole (12).

6. A reversing wrench according to claim 1, characterized in that: The reversing main plate (32) has a reversing mounting hole through which the plate head mounting shaft (22) passes. The reversing main plate (32) is axially limited on the plate head mounting shaft (22) by a snap ring (5). At least one force-applying protrusion (3211) is eccentrically provided on the reversing main plate (32).

7. A reversing wrench according to claim 1, characterized in that: The reversing main plate (32) includes an end cap (321) and a conversion plate (322). The push claw (33) is disposed on the conversion plate (322). The end cap (321) has an installation groove (323) for the conversion plate (322) to be interference-fitted. The conversion plate (322) has a limiting protrusion (3221) that is inserted into the end cap (321).

8. A reversing wrench according to claim 7, characterized in that: The end cap (321) is injection molded onto the conversion plate (322), and the limiting protrusion (3221) extends obliquely into the interior of the end cap (321).

9. A reversing wrench according to claim 8, characterized in that: The conversion plate (322) and the push claw (33) are integrally formed by stamping. The limiting protrusion (3221) is formed by stamping and shearing on the conversion plate (322). The conversion plate (322) is fixed to the end cap (321) by inlay injection molding. The limiting protrusion (3221) is embedded in the end cap (321).

10. A reversing wrench according to claim 9, characterized in that: The reversing wrench also includes a reversing locking mechanism, which includes a stamped positioning groove (3222) and a center hole (3223) as well as a matching ball spring plunger (7). The positioning groove (3222) and the center hole (3223) are formed on the conversion plate (322). The ball spring plunger (7) is installed on the plate head mounting shaft (22). The positioning groove (3222) has two corresponding working positions for the ball spring plunger (7) to be inserted. The center hole (3223) has a corresponding empty position for the ball spring plunger (7) to be inserted.

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