Integrated planetary gear transmission module

Abstract

The utility model relates to the technical field of gear transmission, in particular to an integrated planetary gear transmission module which comprises a planetary gear connected to the outer wall of a sleeve in a sleeved mode, two sets of limiting gaskets are symmetrically arranged on the sleeve along the two ends of the planetary gear, and two sets of compression springs are symmetrically arranged along the two ends of the planetary gear. The sleeve is made of aluminum, the two sets of limiting gaskets are symmetrically arranged on the sleeve along the two ends of the planetary gear, the limiting gaskets can be used for being matched with the compression springs, the limiting effect is achieved for sliding of the limiting gaskets on the sleeve, the sleeve penetrates through the planetary gear and the limiting gaskets to be matched with the compression springs, and the service life of the planetary gear is prolonged. By means of the technical scheme, integrated treatment of the parts can be achieved, during installation and maintenance, the integrated sleeve can be directly replaced according to requirements, the precision of the replaced parts does not need to be calibrated one by one again, and the maintenance convenience in actual use is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear transmission, in particular to an integrated planetary gear transmission module. Background Art

[0002] A bicycle is a means of transportation that combines functions such as commuting, leisure, sports, fitness, and competition. With the development of various components of bicycles, in order to meet the needs of different riders, riding styles, functions, and environments, even for the same component, multiple different types have been developed to meet the aforementioned different requirements. To achieve power transmission between the freewheel hub and the hub body of a bicycle, a one-way transmission mechanism is provided between the freewheel hub and the hub body. In the prior art, the one-way transmission mechanism used is a ratchet and pawl mechanism, and the existing ratchet and pawl mechanism is composed of diversified components. Once a problem occurs in the one-way transmission mechanism, it is often necessary to disassemble the components of the transmission mechanism one by one for maintenance. Due to the strong independence between components, disassembly and assembly are relatively troublesome. Moreover, especially if the assembly accuracy is not well controlled, problems will continue to occur later, resulting in waste of resources. If the one-way transmission mechanism can be modularized, the convenience of disassembly and maintenance will be greatly improved. Therefore, an integrated planetary gear transmission module 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 planetary gear transmission module for solving the problem of one-way transmission modularization 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 planetary gear transmission module, comprising:

[0006] A sleeve, planetary gears sleeved on the outer wall of the sleeve, two groups of planetary gears are symmetrically arranged on the outer wall, and the contact surfaces between the two groups of planetary gears are in ratchet fit;

[0007] Limit washers, two groups of limit washers are symmetrically arranged along both ends of the planetary gears on the sleeve, and the limit washers are in sliding fit with the sleeve;

[0008] Compression springs, two groups of compression springs are symmetrically arranged along both ends of the planetary gears, and the compression springs are located between the planetary gears and the limit washers.

[0009] To implement the above technical solution, by setting the sleeve, it can support the planetary gear and ensure its use stability. Here, the sleeve used is an aluminum sleeve. By symmetrically arranging two groups of limit gaskets on the sleeve along both ends of the planetary gear, and the limit gaskets are in sliding fit with the sleeve, it can use the limit gaskets in cooperation with the compression spring to limit the sliding of the limit gaskets on the sleeve. And by the sleeve passing through the planetary gear and the limit gaskets in cooperation with the compression spring, the integration of components can be achieved. During installation and maintenance, the integrated sleeve can be directly replaced according to needs, and it is not necessary to re-calibrate the accuracy of the replaced components one by one, which greatly improves the convenience of maintenance during actual use.

[0010] In an embodiment of the present invention, a spring cavity is provided between the inner side of the planetary gear and the sleeve, and the compression spring is accommodated in the spring cavity.

[0011] To implement the above technical solution, by providing a spring cavity between the inner side of the planetary gear and the sleeve, it can provide an assembly space for the compression spring and can limit the compression stroke of the compression spring to avoid deviation in the stroke of the compression spring.

[0012] In an embodiment of the present invention, there is a clearance fit between the inner wall of the planetary gear and the sleeve.

[0013] To implement the above technical solution, it can ensure the rotational stability and use reliability of the planetary gear.

[0014] In an embodiment of the present invention, one end of the sleeve is constructed with a sleeve seat, and the other end is constructed with a sealing groove, and a sealing washer is arranged in the sealing groove.

[0015] To implement the above technical solution, the sleeve seat can provide a limiting and supporting effect for assembling the sleeve onto the hub to ensure the assembly stability of the sleeve in the hub, and the sealing groove in cooperation with the sealing washer can ensure the sealing reliability after the sleeve and the hub are assembled.

[0016] In an embodiment of the present invention, the radial dimension of the sleeve seat is larger than the radial dimension of the sleeve. A limiting groove is provided on the inner wall of the limit gasket near the sleeve seat side, and there is an axial clearance fit between the limiting groove and the sleeve seat, and the radial dimension of the inner wall of the limit gasket is smaller than the radial dimension of the sleeve seat.

[0017] Implementing the above technical solution, the radial dimension of the sleeve seat is larger than that of the sleeve, which can utilize the sleeve seat to cooperate with the hub to play a limiting role in the installation of the sleeve. The axial clearance fit between the limiting groove and the sleeve seat can provide displacement space for the limiting gasket to move axially along with the compression of the compression spring. Moreover, the radial dimension of the inner wall of the limiting gasket is smaller than that of the sleeve seat, which can utilize the limiting groove to cooperate with the sleeve seat to play a limiting role in the axial displacement of the limiting gasket along with the compression spring.

[0018] In an embodiment of the present invention, the sealing groove is located outside the limiting gasket.

[0019] Implementing the above technical solution, the sealing gasket in the sealing groove can provide sealing treatment for the sleeve.

[0020] In an embodiment of the present invention, it further includes a hub. The sleeve is located at one end of the hub, and the planetary gear is in gear fit with the hub.

[0021] Implementing the above technical solution, the gear fit between the planetary gear and the hub improves the convenience of installation and disassembly when the planetary gear is integrated and installed into the hub.

[0022] As described above, an integrated planetary gear drive module of the present invention has the following beneficial effects: By setting the sleeve, it can support the planetary gear and ensure its use stability. Here, the sleeve used is an aluminum sleeve. By symmetrically arranging two groups of limiting gaskets on the sleeve along both ends of the planetary gear, and the limiting gasket is in sliding fit with the sleeve, it can utilize the limiting gasket to cooperate with the compression spring to play a limiting role in the sliding of the limiting gasket on the sleeve. And through the sleeve passing through the planetary gear and the limiting gasket cooperating with the compression spring, it can realize the integration of components. During installation and maintenance, the integrated sleeve can be directly replaced according to requirements, and it is not necessary to re-calibrate the accuracy of the replaced components one by one, which greatly improves the convenience of maintenance during actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It shows a schematic structural diagram of the integrated planetary gear drive module disclosed in the embodiment of the present invention.

[0024] Figure 2 It shows a schematic structural diagram of the limiting gasket of the integrated planetary gear drive module disclosed in the embodiment of the present invention.

[0025] Figure 3 It shows a sectional view of the integrated planetary gear drive module disclosed in the embodiment of the present invention.

[0026] Figure 4 It shows Figure 3Partial enlarged view of reference numeral A in the drawings.

[0027] Description of component reference numerals

[0028] 1. Sleeve; 2. Planet gear; 3. Limit gasket; 4. Compression spring; 5. Spring cavity; 6. Sleeve seat; 7. Sealing groove; 8. Limit groove; 9. Hub. Specific 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 4 , the present utility model provides an integrated planetary gear drive module, including a planet gear 2 sleeved on the outer wall of a sleeve 1. Two sets of planet gears 2 are symmetrically arranged on the outer wall, and the contact surfaces between the two sets of planet gears 2 are ratchet fits. Two sets of limit gaskets 3 are symmetrically arranged on the sleeve 1 along both ends of the planet gear 2. The limit gasket 3 is in sliding fit with the sleeve 1. Two sets of compression springs 4 are symmetrically arranged along both ends of the planet gear 2, and moreover, the compression spring 4 is located between the planet gear 2 and the limit gasket 3.

[0031] By providing the sleeve 1, the planet gear 2 can be supported to ensure its use stability. Here, the sleeve 1 is made of aluminum material. By symmetrically arranging two sets of limit gaskets 3 on the sleeve 1 along both ends of the planet gear 2, and the limit gasket 3 is in sliding fit with the sleeve 1, the limit gasket 3 can be used in cooperation with the compression spring 4 to limit the sliding of the limit gasket 3 on the sleeve 1. And through the sleeve 1 passing through the planet gear 2 and the limit gasket 3 in cooperation with the compression spring 4, the integration of components can be realized. During installation and maintenance, the integrated sleeve 1 can be directly replaced according to requirements, and it is not necessary to re-calibrate the accuracy of the replaced components one by one, which greatly improves the convenience of maintenance during actual use.

[0032] A spring cavity 5 is provided between the inner side of the planet gear 2 and the sleeve 1. The compression spring 4 is accommodated in the spring cavity 5. By providing the spring cavity 5 between the inner side of the planet gear 2 and the sleeve 1, an assembly space can be provided for the compression spring 4, and the compression stroke of the compression spring 4 can be limited to avoid deviation of the compression spring 4 stroke.

[0033] The inner wall of the planet gear 2 and the sleeve 1 are in clearance fit, which can ensure the rotation stability and use reliability of the planet gear 2.

[0034] One end of the sleeve 1 is constructed with a sleeve seat 6, and the other end is constructed with a sealing groove 7. A sealing washer is arranged in the sealing groove 7. The sleeve seat 6 can provide a limiting and supporting effect for the assembly of the sleeve 1 onto the hub 9 to ensure the assembly stability of the sleeve 1 within the hub 9. The sealing groove 7 in cooperation with the sealing washer can ensure the sealing reliability after the assembly between the sleeve 1 and the hub 9.

[0035] The radial dimension of the sleeve seat 6 is larger than that of the sleeve 1. The inner wall of the limiting gasket 3 near the sleeve seat 6 is provided with a limiting groove 8. The limiting groove 8 is in axial clearance fit with the sleeve seat 6. The radial dimension of the inner wall of the limiting gasket 3 is smaller than that of the sleeve seat 6. Making the radial dimension of the sleeve seat 6 larger than that of the sleeve 1 can utilize the sleeve seat 6 in cooperation with the hub 9 to play a limiting role in the installation of the sleeve 1. The axial clearance fit between the limiting groove 8 and the sleeve seat 6 can provide a displacement space for the limiting gasket 3 to move axially along with the compression of the compression spring 4. Moreover, making the radial dimension of the inner wall of the limiting gasket 3 smaller than that of the sleeve seat 6 can utilize the limiting groove 8 in cooperation with the sleeve seat 6 to play a limiting role in the axial displacement of the limiting gasket 3 along with the compression spring 4.

[0036] The sealing groove 7 is located outside the limiting gasket 3. The sealing washer in the sealing groove 7 can provide sealing treatment for the sleeve 1.

[0037] It further includes a hub 9. The sleeve 1 is located at one end of the hub 9. Moreover, the planetary gear 2 is in gear fit with the hub 9. Making the planetary gear 2 in gear fit with the hub 9 can improve the convenience of installation and disassembly when the planetary gear 2 is installed into the hub 9 after being integrated.

[0038] By setting the sleeve in the present utility model, it can play a supporting effect on the planetary gear and ensure its use stability. Here, the sleeve adopted is an aluminum sleeve. By symmetrically arranging two groups of limiting gaskets on the sleeve along both ends of the planetary gear, and the limiting gaskets are in sliding fit with the sleeve, it can utilize the limiting gaskets in cooperation with the compression springs to play a limiting role in the sliding of the limiting gaskets on the sleeve. And through the sleeve passing through the planetary gear and the limiting gaskets in cooperation with the compression springs, it can realize the integration treatment of the components. During installation and maintenance, the integrated sleeve can be directly replaced according to requirements, and it is not necessary to re-calibrate the accuracy of the replaced components one by one, greatly improving the convenience of maintenance during actual use.

[0039] The above embodiments are only illustrative of the principles and effects of the present utility model, rather than limiting the present utility model. All equivalent modifications or changes completed 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 planetary gear drive module, characterized in that Comprising: A sleeve, planetary teeth sleeved on the outer wall of the sleeve, two groups of the planetary teeth being symmetrically arranged on the outer wall, and the contact surfaces between the two groups of planetary teeth being in ratchet fit; Limit washers, two groups of the limit washers being symmetrically arranged along the two ends of the planetary teeth on the sleeve, and the limit washers being in sliding fit with the sleeve; Compression springs, two groups of the compression springs being symmetrically arranged along the two ends of the planetary teeth, and the compression springs being located between the planetary teeth and the limit washers.

2. The integrated planetary gear drive module according to claim 1, wherein: A spring cavity is arranged between the inner side of the planetary teeth and the sleeve, and the compression springs are accommodated in the spring cavity.

3. The integrated planetary gear drive module according to claim 1, characterized in that: There is a clearance fit between the inner wall of the planetary teeth and the sleeve.

4. The integrated planetary gear drive module according to claim 1, characterized in that: One end of the sleeve is configured to form a sleeve seat, and the other end is configured to form a sealing groove, and a sealing washer is arranged in the sealing groove.

5. The integrated planetary gear drive module according to claim 1, characterized in that: The radial dimension of the sleeve seat is larger than the radial dimension of the sleeve. A limit groove is arranged on the inner wall of the limit washer close to the side of the sleeve seat, and there is an axial clearance fit between the limit groove and the sleeve seat, and the radial dimension of the inner wall of the limit washer is smaller than the radial dimension of the sleeve seat.

6. The integrated planetary gear drive module according to claim 4, characterized in that: The sealing groove is located outside the limit washer.

7. The integrated planetary gear drive module according to claim 1, characterized in that: It further includes a hub. The sleeve is located at one end of the hub, and the planetary teeth are in gear fit with the hub.

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