Integrated ratchet tooth for hub rear transmission
By setting the fixed ratchet ring and moving ratchet ring structure in the ratchet cavity at the rear end of the drum, combined with the limiting ring and compression spring, the maintenance complexity problem caused by the many parts in the existing drum rear transmission system is solved, and stability and convenience are achieved.
Patent Information
- Application Number
- CN202422582429.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-25
AI Technical Summary
In the existing bicycle hub rear transmission system, the ratchet surface tooth structure requires multiple parts to cause complex maintenance and high cost, and is prone to wear and corrosion, and requires professional tools and technology for regular maintenance.
An integrated ratchet tooth structure is designed, including a ratchet cavity at the rear end of the drum body, and a built-in fixed ratchet ring and a moving ratchet ring. Through the combination of limiting protrusion ring, limiting groove and compression spring, the stable connection and convenient replacement of fixed ratchet ring and moving ratchet ring are achieved.
The stability and convenience of the rear-crank transmission system are achieved, the number of parts is reduced, the maintenance complexity and cost are reduced, and the operation process is simplified.
Smart Images
Figure CN223173869U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hub accessories, in particular to an integrated ratchet tooth for the rear transmission of a hub. Background Art
[0002] At present, for the transmission part of the rear hub of a bicycle, a ratchet surface tooth structure is used for transmission. A set of transmission mechanisms requires 6 to 8 components. During use, this structure has problems of wear and corrosion failure and needs regular maintenance, cleaning and replacement. During maintenance and replacement, due to the large number of components and the precise structure, professional tools and personnel with certain technical capabilities are required for directional operation, which increases the cost of maintenance and replacement and the complexity of operation, and is not conducive to mass use and promotion. Therefore, an integrated ratchet tooth for the rear transmission of a hub is needed. Summary of the Utility Model
[0003] In view of the above-mentioned disadvantages of the prior art, the purpose of the present utility model is to provide an integrated ratchet tooth for the rear transmission of a hub, which is used to solve the problem of the convenience of maintaining the ratchet surface tooth in the prior art.
[0004] To achieve the above purpose and other related purposes, the present utility model provides the following technical solutions:
[0005] An integrated ratchet tooth for the rear transmission of a hub, comprising:
[0006] A hub body, with a ratchet cavity provided inside the rear end of the hub body, and a ratchet assembly is arranged in the ratchet cavity;
[0007] The ratchet assembly includes two groups of symmetrically arranged ratchet rings. The two groups of ratchet rings include a set of fixed ratchet rings and a set of movable ratchet rings. An axle housing penetrating through the two groups of ratchet rings is arranged inside the fixed ratchet rings and the movable ratchet rings;
[0008] A limit convex ring is arranged at one end of the axle housing to limit the axial displacement of the fixed ratchet ring;
[0009] A limit groove is arranged on the outer side of the inner wall of the movable ratchet ring. A spring stop ring is arranged at the other end of the axle housing. Moreover, the spring stop ring is axially spaced and matched with the movable ratchet ring. A compression spring is arranged in the spaced space between the limit groove and the movable ratchet ring to drive the spring stop ring to reciprocate axially.
[0010] By implementing the above technical solution, a ratchet cavity is arranged inside the rear end of the hub body to provide an assembly space for the ratchet assembly. The axle housing can provide a supporting role for the fixed ratchet ring and the movable ratchet ring, ensure the stability of the fixed ratchet ring and the movable ratchet ring during use, and can integrally assemble the fixed ratchet ring, the movable ratchet ring and the axle housing together, so that maintenance and replacement can be more convenient.
[0011] The provision of the limiting convex ring can limit the axial displacement of the fixed ratchet ring, ensuring the stability of the fixed ratchet ring during use. By arranging a compression spring in the spaced space between the limiting groove and the moving ratchet ring, the spring blocking and retracting ring can be driven to reciprocate axially, ensuring the stability of the spring blocking and retracting ring during use.
[0012] In an embodiment of the present invention, a spring limiting seat sleeved on the shaft housing is provided on the spring blocking and retracting ring, and the compression spring is sleeved on the spring limiting seat.
[0013] To achieve the above technical solution, by providing the spring limiting seat, it can play a role in limiting and guiding the compression path of the compression spring, thereby ensuring the smoothness of the axial movement of the spring blocking and retracting ring.
[0014] In an embodiment of the present invention, a retaining ring groove is provided at one end of the spring limiting seat away from the moving ratchet ring, a limiting retaining ring is provided on the shaft housing, the protruding part of the limiting retaining ring is located in the retaining ring groove, and moreover, the protruding part of the limiting retaining ring restricts the displacement of the retaining ring groove in the direction away from the moving ratchet ring.
[0015] To achieve the above technical solution, through the mutual cooperation of the limiting retaining ring and the retaining ring groove, with the protruding part of the limiting retaining ring located in the retaining ring groove, it can play a role in limiting the movement of the spring limiting seat in the direction away from the moving ratchet ring, ensuring the movement reliability of the spring limiting seat.
[0016] In an embodiment of the present invention, a positioning groove is provided on the outer side of the inner wall of the fixed ratchet ring, and the limiting convex ring is in contact with the root of the positioning groove.
[0017] To achieve the above technical solution, by providing the positioning groove and having the limiting convex ring in contact with the root of the positioning groove, it can utilize the limiting convex ring to ensure the support stability of the fixed ratchet ring.
[0018] In an embodiment of the present invention, the radial dimension of the spring blocking and retracting ring is set to be larger than the radial dimension of the limiting groove.
[0019] To achieve the above technical solution, by setting the radial dimension of the spring blocking and retracting ring to be larger than the radial dimension of the limiting groove, it can ensure the support stability of the spring blocking and retracting ring for the compression spring, preventing the compression spring from falling off the spring blocking and retracting ring.
[0020] In an embodiment of the present invention, the mating surface of the fixed ratchet ring and the moving ratchet ring is in meshing fit.
[0021] To achieve the above technical solution, by making the mating surface of the fixed ratchet ring and the moving ratchet ring in meshing fit, it can improve the synchronization and reliability of the mating between the fixed ratchet ring and the moving ratchet ring.
[0022] As described above, an integrated ratchet tooth for the rear drive of a flower drum of the present utility model has the following beneficial effects: By providing a ratchet cavity inside the rear end of the flower drum body, an assembly space is provided for the ratchet assembly. The shaft housing can provide a supporting effect on the fixed ratchet ring and the moving ratchet ring, ensuring the stability of the fixed ratchet ring and the moving ratchet ring during use, and enabling the integrated assembly of the fixed ratchet ring and the moving ratchet ring with the shaft housing, thus making replacement and maintenance more convenient.
[0023] The setting of the limiting convex ring can limit the axial displacement of the fixed ratchet ring and ensure the stability of the fixed ratchet ring during use. By providing a compression spring in the spaced space between the limiting groove and the moving ratchet ring, the spring blocking ring can be driven to reciprocate axially, ensuring the stability of the spring blocking ring during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It shows a schematic structural view of the integrated ratchet tooth for the rear drive of a flower drum disclosed in an embodiment of the present utility model.
[0025] Figure 2 It shows a schematic sectional view of the integrated ratchet tooth for the rear drive of a flower drum disclosed in an embodiment of the present utility model.
[0026] Figure 3 It shows a schematic structural view of the fixed ratchet ring of the integrated ratchet tooth for the rear drive of a flower drum disclosed in an embodiment of the present utility model.
[0027] DESCRIPTION OF REFERENCE NUMERALS
[0028] 1. Flower drum body; 2. Ratchet cavity; 3. Fixed ratchet ring; 4. Moving ratchet ring; 5. Shaft housing; 6. Limiting convex ring; 7. Limiting groove; 8. Spring blocking ring; 9. Compression spring; 10. Spring limiting seat; 11. Retaining ring groove; 12. Positioning groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0029] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.
[0030] Please refer to Figures 1 to 3, the utility model provides an integrated ratchet tooth for the rear transmission of a flower drum, which includes a ratchet cavity 2 arranged inside the rear end of the flower drum body 1. A ratchet assembly is arranged inside the ratchet cavity 2. The ratchet assembly includes two groups of symmetrically arranged ratchet rings. The two groups of ratchet rings include a group of fixed ratchet rings 3 and a group of moving ratchet rings 4. An axle housing 5 penetrating through the two groups of ratchet rings is arranged inside the fixed ratchet ring 3 and the moving ratchet ring 4. A limiting convex ring 6 is arranged at one end of the axle housing 5 to limit the axial displacement of the fixed ratchet ring 3. A limiting groove 7 is arranged on the outer side of the inner wall of the moving ratchet ring 4. A spring anti-reverse ring 8 is arranged at the other end of the axle housing 5. Moreover, the spring anti-reverse ring 8 is axially spaced and cooperated with the moving ratchet ring 4. A compression spring 9 is arranged in the spaced space between the limiting groove 7 and the moving ratchet ring 4 to drive the spring anti-reverse ring 8 to reciprocate axially.
[0031] By arranging the ratchet cavity 2 inside the rear end of the flower drum body 1, an assembly space is provided for the ratchet assembly. The axle housing 5 can provide a supporting effect on the fixed ratchet ring 3 and the moving ratchet ring 4, ensuring the stability of the fixed ratchet ring 3 and the moving ratchet ring 4 during use, and can integrally assemble the fixed ratchet ring 3 and the moving ratchet ring 4 with the axle housing 5, so that the replacement and maintenance can be more convenient.
[0032] The setting of the limiting convex ring 6 can limit the axial displacement of the fixed ratchet ring 3, ensuring the use stability of the fixed ratchet ring 3. By arranging the compression spring 9 in the spaced space between the limiting groove 7 and the moving ratchet ring 4, the spring anti-reverse ring 8 can be driven to reciprocate axially, ensuring the use stability of the spring anti-reverse ring 8.
[0033] A spring limiting seat 10 sleeved on the axle housing 5 is arranged on the spring anti-reverse ring 8. The compression spring 9 is sleeved on the spring limiting seat 10. By arranging the spring limiting seat 10, it can play a role in limiting and guiding the compression path of the compression spring 9, thus ensuring the smoothness of the axial movement of the spring anti-reverse ring 8.
[0034] A retaining ring groove 11 is arranged at one end of the spring limiting seat 10 away from the moving ratchet ring 4. A limiting retaining ring is arranged on the axle housing 5. The protruding part of the limiting retaining ring is located in the retaining ring groove 11. Moreover, the protruding part of the limiting retaining ring limits the displacement of the retaining ring groove 11 in the direction away from the moving ratchet ring 4. By the mutual cooperation of the limiting retaining ring and the retaining ring groove 11, the protruding part of the limiting retaining ring is located in the retaining ring groove 11, which can play a role in limiting the movement of the spring limiting seat 10 in the direction away from the moving ratchet ring 4, ensuring the movement reliability of the spring limiting seat 10.
[0035] A positioning groove 12 is arranged on the outer side of the inner wall of the fixed ratchet ring 3. The limiting convex ring 6 is in contact with the root of the positioning groove 12. By arranging the positioning groove 12 and the limiting convex ring 6 being in contact with the root of the positioning groove 12, the supporting stability of the fixed ratchet ring 3 can be ensured by using the limiting convex ring 6.
[0036] The radial dimension of the spring retaining ring 8 is set to be larger than that of the limiting groove 7. By setting the radial dimension of the spring retaining ring 8 to be larger than that of the limiting groove 7, the support stability of the compression spring 9 by the spring retaining ring 8 can be ensured, and the compression spring 9 can be prevented from falling off the spring retaining ring 8.
[0037] The mating surface of the fixed ratchet ring 3 and the moving ratchet ring 4 is in meshing fit. By meshing the mating surfaces of the fixed ratchet ring 3 and the moving ratchet ring 4, the synchronization and reliability of the cooperation between the fixed ratchet ring 3 and the moving ratchet ring 4 can be improved.
[0038] In the present utility model, a ratchet cavity is provided inside the rear end of the hub body to provide an assembly space for the ratchet assembly. The shaft shell can provide a supporting effect on the fixed ratchet ring and the moving ratchet ring, ensure the stability of the fixed ratchet ring and the moving ratchet ring during use, and can integrally assemble the fixed ratchet ring and the moving ratchet ring with the shaft shell, so that the replacement and maintenance can be more convenient.
[0039] The setting of the limiting convex ring can limit the axial displacement of the fixed ratchet ring and ensure the stability of the fixed ratchet ring during use. By arranging a compression spring in the spaced space between the limiting groove and the moving ratchet ring, the spring retaining ring can be driven to reciprocate axially, ensuring the stability of the spring retaining ring during use.
[0040] The above embodiments are only illustrative of the principles and effects of the present utility model and are not used to limit the present utility model. All equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present utility model should still be covered by the claims of the present utility model.
Claims
1. An integrated ratchet tooth for rear transmission of a flower drum, characterized in that, Comprising: A hub body, a ratchet cavity is arranged inside the rear end of the hub body, and a ratchet assembly is arranged in the ratchet cavity; The ratchet assembly includes two sets of symmetrically arranged ratchet rings. The two sets of ratchet rings include a set of fixed ratchet rings and a set of moving ratchet rings. An axle housing penetrating through the two sets of ratchet rings is arranged inside the fixed ratchet rings and the moving ratchet rings; A limiting convex ring is arranged at one end of the axle housing to limit the axial displacement of the fixed ratchet ring; A limiting groove is arranged on the outer side of the inner wall of the moving ratchet ring. A spring blocking ring is arranged at the other end of the axle housing. Moreover, the spring blocking ring is axially spaced and cooperated with the moving ratchet ring. A compression spring is arranged in the spaced space between the limiting groove and the moving ratchet ring to drive the spring blocking ring to reciprocate axially.
2. The one-piece ratchet teeth for rear transmission of a flower drum according to claim 1, wherein: A spring limiting seat sleeved on the axle housing is arranged on the spring blocking ring, and the compression spring is sleeved on the spring limiting seat.
3. The one-piece ratchet teeth for rear transmission of the flower drum according to claim 2, wherein: A retaining ring groove is arranged at one end of the spring limiting seat away from the moving ratchet ring. A limiting retaining ring is arranged on the axle housing. The protruding part of the limiting retaining ring is located in the retaining ring groove. Moreover, the protruding part of the limiting retaining ring limits the displacement of the retaining ring groove away from the moving ratchet ring.
4. The integrated ratchet gear for hub rear transmission according to claim 1, characterized in that: A positioning groove is arranged on the outer side of the inner wall of the fixed ratchet ring, and the limiting convex ring is attached to the root of the positioning groove.
5. The integrated ratchet teeth for rear transmission of the flower drum according to claim 1, wherein: The radial dimension of the spring blocking ring is set to be larger than the radial dimension of the limiting groove.
6. The one-piece ratchet teeth for the rear drive of the flower drum according to claim 1, wherein: The mating surface of the fixed ratchet ring and the moving ratchet ring is in meshing fit.