Gearbox jump structure

Abstract

This utility model relates to a gearbox skip-gear structure in the field of gearboxes, including a gearbox housing with a conductive receiving cavity inside. One end of the gearbox housing has a connecting end, and the connecting end is threaded to an adjusting nut. The adjusting nut is connected to a torque cap via a plug-in structure. A stop ring is connected inside the receiving cavity. A limiting hole communicating with the receiving cavity is opened at the end of the gearbox housing near the connecting end. A skip-gear shaft passes through the limiting hole. A skip-gear washer and a positioning washer are sleeved on the connecting end. An axially conductive mounting hole is opened on the adjusting nut, and a positioning pin is connected inside the mounting hole. An elastic element that can drive the positioning pin to continuously extend towards the skip-gear washer is sleeved on the positioning pin. This utility model achieves efficient space utilization, reduces the overall volume, and improves the portability and ease of carrying of the gearbox skip-gear structure through the layout of the receiving cavity, the stop ring, and the positioning pin inside the gearbox housing.

Description

Technical Field

[0001] This utility model relates to the field of gearboxes, and more particularly to screwdriver gearboxes, specifically to a gearbox skipping structure. Background Technology

[0002] The gearbox's skip-gear mechanism achieves rapid torque or speed adjustment through mechanical gear switching, and is widely used in assembly, repair, DIY, and other scenarios requiring multi-gear operation. It has extensive applications in the transmission of power tools and hand tools, such as, but not limited to, screwdrivers. Screwdrivers, as fastening tools widely used in mechanical assembly, electronic equipment repair, and furniture assembly, function primarily to screw in or out screws through rotational motion.

[0003] The skip-gear mechanism of a screwdriver gearbox adjusts the output torque or speed by switching gears to accommodate the tightening needs of screws of different sizes. It typically consists of an input shaft, an output shaft, a planetary gear set, a skip-gear mechanism, and a gear positioning device. The skip-gear mechanism usually employs a ratchet-spring-positioning pin structure, achieving gear switching by axially moving the gear set or changing the gear meshing path. In use, the user triggers the skip-gear mechanism by moving the gear ring or pressing a button, causing the gear set to enter the preset gear to adjust the torque or speed.

[0004] However, the existing gearbox skipping mechanism still has the following significant drawbacks: the traditional skipping mechanism relies on the coordinated work of multiple precision parts. Due to the large number of parts and the high requirements for assembly precision, the assembly and use are relatively cumbersome. At the same time, the existing skipping structure is relatively complex, resulting in a large overall size after the skipping structure is assembled, which affects the portability and ease of use, thus hindering convenient use and affecting the user experience. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned defects and provide a gearbox skipping structure to solve the technical problems in the background art where the existing gearbox skipping structure is relatively complex, the overall volume after assembly is large, and it affects the portability and carrying experience.

[0006] The objective of this utility model is achieved through the following means:

[0007] The gearbox skip-gear structure includes a housing with a communicating cavity inside. One end of the housing has a connecting end, to which an adjusting nut is threadedly connected. The adjusting nut is connected to a torque cap via a plug-in structure. A stop ring is connected within the cavity, with a retaining portion on its outer side. The inner wall of the cavity has a locking position that mates with the retaining portion. A limiting hole, communicating with the cavity, is located at the end of the housing near the connecting end. A skip-gear shaft passes through the limiting hole, with one end of the shaft inserted into the limiting hole and engaging with the locking portion. The holding part is snap-fitted and limited, and the connecting end is fitted with a shift pad and a positioning pad. The shift pad has shift holes arranged in a circumferential direction. The outer side of the positioning pad is connected to the torque cover through a snap-fit ​​structure. The positioning pad has a positioning hole. The adjusting nut has an axially guiding mounting hole. A positioning pin is connected in the mounting hole. An elastic element that can drive the positioning pin to continuously extend towards the shift pad is sleeved on the positioning pin. The torque cover can drive the adjusting nut and the positioning pad to rotate synchronously, so that the positioning pin matches the shift hole.

[0008] Furthermore, as described above, the outer diameter of the connecting end is smaller than the outer diameter of the housing, and the outer surface of the connecting end is provided with a threaded portion. The connecting end is connected to the adjusting nut through the threaded portion, and the adjusting nut can rotate around the threaded portion.

[0009] The connecting end is directly threaded to the adjusting nut via a threaded portion on its outer surface, allowing the adjusting nut to rotate along the threaded portion and move axially. This simplifies assembly steps, reduces assembly difficulty, and the threaded connection method results in a compact structure that helps reduce overall size and improves portability.

[0010] Furthermore, as described above, a stepped portion is formed at the connection between the connecting end and the housing. The limiting hole extends from the stepped portion through the locking position to the receiving cavity. The stop ring is built into the receiving cavity, and the stop ring is paired and locked with the locking position through the locking portion. The jump-off shaft passes through the limiting hole and locks and contacts the locking portion and the locking position.

[0011] The design incorporates a stepped section at the connection point between the connecting end and the housing, with a limiting hole extending from the stepped section through the locking slot into the receiving cavity. This, combined with the retaining ring, allows for direct engagement between the retaining part and the locking slot. The shift shaft passes through the limiting hole and engages with both the retaining part and the locking slot. This structure secures the retaining ring through direct mating engagement between the retaining part and the locking slot. Furthermore, the simple engagement method between the limiting hole and the shift shaft, along with the fact that the shift shaft is positioned outside the retaining ring, helps reduce the overall volume of the gearbox's outer diameter, improving portability.

[0012] Furthermore, as described above, the middle part of the skip pad is provided with a connecting hole for mating connection with the connecting end, the outer side of the connecting end is provided with a limiting groove, and the inner wall of the connecting hole is formed with a limiting groove for locking and limiting the mating part, so that the skip pad can move along the axial direction of the connecting end, and the skip pad is sleeved on the connecting end through the connecting hole and contacts the step part.

[0013] The skip pad is connected to the connecting end through a connecting hole in the middle. The limiting groove on the outer side of the connecting end and the limiting part on the inner wall of the connecting hole engage and match, allowing the skip pad to move axially along the connecting end but restricting rotation. This structure replaces traditional guide or anti-rotation parts with the cooperation of the limiting groove and the limiting part, reducing the number of parts, simplifying assembly, and ensuring stable axial movement, thus improving reliability.

[0014] Furthermore, as described above, the positioning pad is sleeved with the connecting end through a socket hole. A snap-fit ​​protrusion is formed on the outer side of the positioning pad. A cavity is formed inside the torque cover. A snap-fit ​​groove is provided on the inner wall of the cavity to engage with the snap-fit ​​protrusion. An insertion groove is provided on the outer side of the adjusting nut. An insertion protrusion is provided on the inner wall of the cavity to engage with the insertion groove.

[0015] The positioning washer is sleeved with the connecting end through the socket hole. The outer side locking protrusion engages with the locking groove on the inner wall of the torque cover cavity, and the insertion protrusion on the inner wall of the torque cover cavity engages with the insertion groove on the outer side of the adjusting nut. By rotating the torque cover, the positioning washer and the adjusting nut are rotated, causing the positioning pin on the adjusting nut to rotate into the corresponding gear hole on the gear washer.

[0016] Furthermore, as described above, the positioning pin is inserted into the mounting hole, which is coaxially connected to the positioning hole, allowing one end of the positioning pin to pass through the positioning hole through the continuous elastic force provided by the elastic element and to be paired with the gear hole.

[0017] The locating pin passes through the mounting hole of the adjusting nut, which is coaxially connected to the locating hole of the locating washer. An elastic element continuously drives the locating pin through the locating hole and mates with the gear position hole of the gear shift washer. This structure achieves automatic and stable mating of the locating pin and the gear position hole through the continuous elastic force of the elastic element, simplifying the structure, reducing the number of parts, ensuring reliable gear positioning, and further reducing the overall volume and outer diameter compared to existing outward-extending locators, thus improving the user experience.

[0018] Furthermore, as described above, the elastic element is composed of a spring, one end of which abuts against the torque cap, and the other end of which is sleeved on the positioning pin, providing a continuous elastic force to the positioning pin that extends toward the positioning pad.

[0019] The elastic element is made of a spring, with one end abutting against the torque cap and the other end passing through the locating pin and providing a continuous elastic force extending towards the locating pad. This ensures a stable match between the locating pin and the stop hole, improving reliability.

[0020] Furthermore, as described above, the adjusting nut is provided with a mounting groove, and a compression reset component is provided in the mounting groove.

[0021] The beneficial effects of this utility model are as follows: the shift shaft passes through the limiting hole and matches with the retaining part and the locking position, so that the shift shaft is distributed around the periphery of the stop ring, thereby reducing the outer diameter of the gearbox. An installation hole is provided in the axial direction of the adjusting nut, and a positioning pin is connected through the installation hole, so that the positioning pin extends and is distributed along the axial direction, reducing the exposed setting of the positioning pin and integrating it into the adjusting nut, further reducing the volume of the gearbox shift structure. Moreover, the various functional components are arranged through the receiving cavity inside the housing and the through-sleeve layout of the connecting end, realizing efficient use of space, avoiding the impact of traditional complex structures on volume, and improving the lightness and portability of the gearbox shift structure.

[0022] The positioning pin extends continuously towards the shift pad via an elastic element and precisely matches the shift hole on the shift pad. The linkage design, which drives the adjusting nut and positioning pad to rotate synchronously with the torque cap, simplifies the operation logic while ensuring the reliability of shifting and solves the problem of poor user experience caused by the complexity of traditional structures. Attached Figure Description

[0023] Figure 1 This is a perspective view of this embodiment;

[0024] Figure 2 This is the front view of this embodiment;

[0025] Figure 3 for Figure 2 Sectional view of AA;

[0026] Figure 4 This is an exploded view of the first direction in this embodiment;

[0027] Figure 5 This is an exploded view of the second direction in this embodiment;

[0028] Figure 6 This is a schematic diagram of the internal structure of the casing in this embodiment;

[0029] Figure 7 This is a schematic diagram illustrating the usage state of this embodiment;

[0030] The reference numerals in the figure are as follows: 1-gear shift shaft, 2-gear shift pad, 3-positioning pad, 4-gear hole, 5-positioning hole, 6-positioning pin, 7-elastic element, 8-connecting hole, 9-limiting part, 10-sleeve hole, 11-clamping protrusion, 12-compression reset element;

[0031] 100-Shell, 101-Receiving cavity, 102-Connecting end, 103-Card slot, 104-Limiting hole, 105-Threaded part, 106-Stepped part, 107-Limiting groove;

[0032] 200 - Adjusting nut, 201 - Mounting hole, 202 - Insertion slot, 203 - Mounting slot;

[0033] 300-Torque cap, 301-Cavity, 302-Snap-fit ​​groove, 303-Plug-in protrusion;

[0034] 400 - Stop ring, 401 - Holding part, 402 - Through hole. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0036] To make the technical problem to be solved, the technical solution and the beneficial effects of this utility model clearer, the following describes the solution in further detail with reference to the accompanying drawings and embodiments.

[0037] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this scheme and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] In this embodiment, refer to Figures 1-7 The gearbox skip-gear structure specifically implemented includes a housing 100, with a conductive receiving cavity 101 formed inside the housing 100. A connecting end 102 is formed at one end of the housing 100, and an adjusting nut 200 is threadedly connected to the connecting end 102. The adjusting nut 200 is connected to a torque cap 300 via a plug-in structure. A stop ring 400 is connected inside the receiving cavity 101, and a retaining part 401 is provided on the outer side of the stop ring 400. A retaining position 103 is formed on the inner wall of the receiving cavity 101 to match the retaining part 401. A limiting hole 104 communicating with the receiving cavity 101 is opened at the end of the housing 100 near the connecting end 102, and a skip-gear shaft 1 passes through the limiting hole 104. One end of the shift shaft 1 passes through the limiting hole 104 and is engaged with the retaining part 401 for limiting. The connecting end 102 is sleeved with the shift pad 2 and the positioning pad 3. The shift pad 2 has a shift hole 4 arranged in the circumferential direction. The outer side of the positioning pad 3 is connected to the torque cover 300 through a snap-fit ​​structure. The positioning pad 3 has a positioning hole 5. The adjusting nut 200 has an axially guiding mounting hole 201. A positioning pin 6 is connected in the mounting hole 201. An elastic element 7 that can drive the positioning pin 6 to continuously extend towards the shift pad 2 is sleeved on the positioning pin 6. The torque cover 300 can drive the adjusting nut 200 and the positioning pad 3 to rotate synchronously, so that the positioning pin 6 matches the shift hole 4.

[0039] The retaining ring 400 has a through hole 402 inside.

[0040] In this embodiment, the adjustment nut 200 and the torque cap 300 are connected by a plug-in structure, and the positioning washer 3 and the torque cap 300 are connected by a snap-fit ​​structure. This reduces the number of additional precision parts used for connection and fixation in the traditional skip mechanism, lowers the assembly accuracy requirements, and makes the overall structure more compact.

[0041] The outer diameter of the connecting end 102 is smaller than the outer diameter of the housing 100. The outer surface of the connecting end 102 is provided with a threaded portion 105. The connecting end 102 is connected to the adjusting nut 200 through the threaded portion 105. The adjusting nut 200 can rotate around the threaded portion 105.

[0042] The connecting end 102 is directly threaded to the adjusting nut 200 via a threaded portion 105 on its outer surface, allowing the adjusting nut 200 to rotate along the threaded portion 105 and move axially. This simplifies assembly steps, reduces assembly difficulty, and the threaded connection method results in a compact structure, helping to reduce overall size and improve portability.

[0043] Specifically, the end of the connecting end 102 is provided with an anti-detachment groove, and an anti-detachment retaining spring for limiting the torque cover 300 is sleeved in the anti-detachment groove.

[0044] The connection between the connecting end 102 and the housing 100 forms a stepped portion 106. The limiting hole 104 extends from the stepped portion 106 through the locking position 103 to the receiving cavity 101. The stop ring 400 is built into the receiving cavity 101, and the stop ring 400 is paired and locked with the locking position 103 through the locking part 401. The jump shaft 1 passes through the limiting hole 104 and is locked and contacted with the locking part 401 and the locking position 103.

[0045] The stepped portion 106 formed at the connection point between the connecting end 102 and the housing 100, and the limiting hole 104 extending from the stepped portion 106 through the locking position 103 to the receiving cavity 101, are designed to work in conjunction with the stop ring 400, which is directly engaged with the locking position 103 via the locking portion 401. The shift shaft 1 passes through the limiting hole 104 and engages with the locking portion 401 and the locking position 103. This structure secures the stop ring 400 through the direct mating engagement of the locking portion 401 and the locking position 103. The locking contact between the limiting hole 104 and the shift shaft 1 is structurally simple, and the fact that the shift shaft 1 is located on the outside of the stop ring 400 helps reduce the overall volume of the gearbox's outer diameter, improving portability.

[0046] The middle part of the skip pad 2 is provided with a connecting hole 8 for mating and connecting with the connecting end 102. A limiting groove 107 is provided on the outer side of the connecting end 102. The inner wall of the connecting hole 8 forms a limiting groove 107 for holding and limiting the mating part 9, so that the skip pad 2 can move along the axial direction of the connecting end 102. The skip pad 2 is sleeved on the connecting end 102 through the connecting hole 8 and contacts the step part 106.

[0047] The shift pad 2 is sleeved with the connecting end 102 through the connecting hole 8 in the middle. The limiting groove 107 on the outer side of the connecting end 102 is engaged with the limiting part 9 on the inner wall of the connecting hole 8, allowing the shift pad 2 to move axially along the connecting end 102 but restricting rotation. This structure replaces traditional guide or anti-rotation parts by using the cooperation of the limiting groove 107 and the limiting part 9, reducing the number of parts, simplifying assembly, and ensuring stable axial movement, thus improving reliability.

[0048] Specifically, the limiting part 9 has a protruding structure, and four limiting parts 9 are provided. The four limiting parts 9 are arranged in a circular axis on the inner wall of the connecting hole 8 and are paired and engaged with the limiting groove 107 on the connecting end 102.

[0049] The positioning pad 3 is sleeved with the connecting end 102 through the sleeve hole 10. The outer side of the positioning pad 3 forms a snap-fit ​​protrusion 11. The inside of the torque cover 300 forms a cavity 301. The inner wall of the cavity 301 is provided with a snap-fit ​​groove 302 that is matched with the snap-fit ​​protrusion 11. The outer side of the adjusting nut 200 is provided with a insertion groove 202. The inner wall of the cavity 301 is provided with an insertion protrusion 303 that is matched with the insertion groove 202.

[0050] The positioning washer 3 is sleeved with the connecting end 102 through the sleeve hole 10. The outer side snap-fit ​​protrusion 11 is engaged with the snap-fit ​​groove 302 on the inner wall of the cavity 301 of the torque cover 300, and the insertion protrusion 303 on the inner wall of the cavity 301 of the torque cover 300 is inserted and engaged with the insertion groove 202 on the outer side of the adjusting nut 200. By rotating the torque cover 300, the positioning washer 3 and the adjusting nut 200 are rotated, causing the positioning pin 6 on the adjusting nut 200 to rotate into the corresponding gear hole 4 on the gear shift washer 2.

[0051] Specifically, four snap-fit ​​protrusions 11 are provided, and the four snap-fit ​​protrusions 11 are arranged circumferentially on the outer side of the positioning pad 3. The torque cover 300 is sleeved on the connecting end 102, and the snap-fit ​​groove 302 is snapped and matched with the snap-fit ​​protrusions 11. At the same time, the insertion protrusion 303 is inserted into the insertion groove 202, and a retaining spring is used to prevent the torque cover 300 from loosening axially.

[0052] The positioning pin 6 is inserted into the mounting hole 201, which is coaxially connected with the positioning hole 5, so that one end of the positioning pin 6 can pass through the positioning hole 5 through the continuous elastic force provided by the elastic element 7 and be paired with the gear hole 4.

[0053] The locating pin 6 passes through the mounting hole 201 of the adjusting nut 200. The mounting hole 201 is coaxially connected with the locating hole 5 of the locating washer 3. The elastic element 7 continuously drives the locating pin 6 through the locating hole 5 and mates with the gear position hole 4 of the gear shift washer 2. This structure achieves automatic and stable mating of the locating pin 6 and the gear position hole 4 through the continuous elastic force of the elastic element 7, simplifying the structure, reducing the number of parts, and ensuring reliable gear positioning. Compared with the existing outwardly extended locating elements, it can further reduce the overall volume and outer diameter, improving the user experience.

[0054] The end of the positioning pin 6 extending toward the positioning pad 3 is rounded, and the middle part of the positioning pin 6 is provided with an abutment part. One end of the elastic member 7 abuts against the abutment part and can apply a continuous elastic force to the positioning pin 6 that approaches the positioning pad 3.

[0055] The elastic element 7 is made of a spring. One end of the elastic element 7 abuts against the torque cover 300, and the other end of the elastic element 7 is sleeved on the positioning pin 6, and can provide the positioning pin 6 with a continuous elastic force extending towards the positioning pad 3.

[0056] The elastic element 7 is made of a spring, with one end abutting against the torque cap 300 and the other end sleeved on the positioning pin 6, providing a continuous elastic force extending towards the positioning pad 3. This ensures a stable match between the positioning pin 6 and the stop hole 4, improving reliability.

[0057] The adjusting nut 200 has a mounting groove 203, and a compression reset component 12 is disposed in the mounting groove 203. Specifically, the compression reset component 12 is composed of a compression spring.

[0058] In some embodiments, the outer surface of the torque cover is provided with a gear value.

[0059] The specific structure in this embodiment is as follows:

[0060] The retaining ring 400 is built into the receiving cavity 101, so that the retaining part 401 of the retaining ring 400 is paired and inserted into the locking position 103. At the same time, one end of the shift shaft 1 passes through the limiting hole 104 and is paired and contacted with the retaining part 401 and the locking position 103, so that the shift shaft 1 is distributed around the periphery of the retaining ring 400, thereby reducing the outer diameter of the gearbox. The shift shim 2 is sleeved to the connecting end 102 through the connecting hole 8 and contacts the stepped part 106, so that the limiting part 9 is paired with the limiting groove 107. The shift shim 2 can only move axially. The positioning shim 3 is sleeved to the connecting end 102 through the sleeve hole 10. The positioning shim 3 contacts the shift shim 2. The adjusting nut 200 connects the positioning pin 6 and the elastic element 7 through the mounting hole 201, so that the positioning pin 6 moves axially. The distribution is extended to reduce the exposed setting of the positioning pin 6, so that it is integrated into the adjusting nut 200, further reducing the volume of the gearbox skip structure. The compression reset component 12 is built into the mounting groove 203, so that the adjusting nut 200 is threadedly installed on the connecting end 102, and the compression reset component 12 contacts the positioning pad 3. At the same time, the torque cover 300 is paired with the connecting end 102 through the opening, and the adjusting nut 200, skip pad 2 and positioning pad 3 are covered by the cavity 301. The torque cover 300 is paired with the snap-fit ​​protrusion 11 on the positioning pad 3 through the snap-fit ​​groove 302, and is inserted into the insertion groove 202 through the insertion protrusion 303, thus completing the limiting installation of the adjusting nut 200 and the positioning pad 3.

[0061] The gearbox skipping structure of this utility model achieves efficient use of space, avoids the impact of traditional complex structures on volume, and improves the lightweight and portability of the gearbox skipping structure.

[0062] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A gear box jump structure, comprising a box shell, an internally formed through communication accommodating cavity of the box shell, a connecting end of the box shell, a threaded connection of an adjusting nut to the connecting end, a torsion cover connected to the adjusting nut through a plug-in structure, characterized in that: A stop ring is connected inside the receiving cavity. A retaining part is provided on the outer side of the stop ring. The inner wall of the receiving cavity forms a locking position that matches the retaining part. A limiting hole communicating with the receiving cavity is opened at the end of the housing near the connecting end. A jump-gear shaft passes through the limiting hole. One end of the jump-gear shaft passes through the limiting hole and engages with the retaining part for limiting. A jump-gear shim and a positioning shim are sleeved on the connecting end. A gear position hole is opened on the jump-gear shim along the circumferential direction. The outer side of the positioning shim is connected to the torque cover through a snap-fit ​​structure. A positioning hole is opened on the positioning shim. An axially guiding mounting hole is opened on the adjusting nut. A positioning pin is connected in the mounting hole. An elastic element that can drive the positioning pin to continuously extend towards the jump-gear shim is sleeved on the positioning pin. The torque cover can drive the adjusting nut and the positioning shim to rotate synchronously, so that the positioning pin matches the gear position hole.

2. The gear box jump structure of claim 1, wherein: The outer diameter of the connecting end is smaller than the outer diameter of the housing. The outer surface of the connecting end is provided with a threaded part. The connecting end is connected to the adjusting nut through the threaded part. The adjusting nut can rotate around the threaded part.

3. The gear box jump structure of claim 1, wherein: The connection between the connecting end and the housing forms a stepped portion. The limiting hole extends from the stepped portion through the locking position to the receiving cavity. The stop ring is built into the receiving cavity, and the stop ring is paired and locked with the locking position through the locking part. The jump-off shaft passes through the limiting hole and locks and contacts the locking part and the locking position.

4. The gear box jump structure of claim 3, wherein: The jump stop shim has a connecting hole in the middle for mating with the connecting end. A limiting groove is formed on the outer side of the connecting end, and a limiting groove is formed on the inner wall of the connecting hole for locking and limiting the mating part, so that the jump stop shim can move along the axial direction of the connecting end. The jump stop shim passes through the connecting hole onto the connecting end and contacts the step part.

5. The gear box jump structure of claim 4, wherein: The positioning pad is sleeved with the connecting end through the socket hole. The outer side of the positioning pad forms a snap-fit ​​protrusion. The inside of the torque cover forms a cavity. The inner wall of the cavity is provided with a snap-fit ​​groove that is matched with the snap-fit ​​protrusion. The outer side of the adjusting nut is provided with a plug-in groove. The inner wall of the cavity is provided with a plug-in protrusion that is matched with the plug-in groove.

6. The gearbox skipping structure according to any one of claims 1-5, characterized in that: The positioning pin is inserted into the mounting hole, which is coaxially connected with the positioning hole. This allows one end of the positioning pin to pass through the positioning hole through the continuous elastic force provided by the elastic element and to be paired with the gear hole.

7. A gear box jump structure according to any one of claims 1 to 5, wherein: The elastic element is composed of a spring. One end of the elastic element abuts against the torque cap, and the other end of the elastic element is sleeved on the positioning pin, and can provide the positioning pin with a continuous elastic force extending towards the positioning pad.

8. A gear box jump structure according to any one of claims 1-5, characterized in that: The adjusting nut has a mounting groove, and a compression reset component is installed in the mounting groove.

Images