Motorcycle clutch cover assembly

By using a thickened support sleeve in the motorcycle clutch housing assembly and coating its top with a hardened layer, the problem of support sleeve collapse and deformation was solved, ensuring a cushioning effect and enhancing the stability of the assembly.

CN224396974UActive Publication Date: 2026-06-23CHONGQING YONGHAN MASCH PROCESSING CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHONGQING YONGHAN MASCH PROCESSING CO LTD
Filing Date
2025-08-05
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

In existing motorcycle clutch housing and gear disc assemblies, the support sleeve is prone to collapse and deformation under axial pressure, causing the buffer spring to fail and become ineffective in buffering.

Method used

A support cylinder is used instead of the support sleeve. The outer diameter of the support cylinder is the same as that of the original support sleeve, and the inner diameter is half of that of the original support sleeve. A bulge is set at the bottom and a hardening layer is plated on the top to enhance the strength and hardness of the support cylinder. It is fixed to the component by riveting.

Benefits of technology

This improves the compressive strength of the support cylinder, prevents edge collapse and deformation, ensures that the buffering effect of the buffer spring is not affected, and avoids the gear disc being crushed.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224396974U_ABST
    Figure CN224396974U_ABST
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Abstract

The utility model belongs to the motorcycle clutch technical field, concretely relates to a motorcycle clutch cover assembly body, include: cover, the top centre of cover is provided with the axle cylinder, the top array of cover is provided with a plurality of riveting hole no.
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Description

Technical Field

[0001] This utility model belongs to the field of motorcycle clutch technology, specifically relating to a motorcycle clutch cover assembly. Background Technology

[0002] The clutch is an important component for the operation and control of power machinery. The structure of a friction plate clutch includes an outer cover and a driven assembly. The driven assembly includes components such as a driving friction plate, a driven friction plate, and a pressure spring. The driving friction plate is fixedly fitted to the outer cover in the circumferential direction. The outer cover is connected to the power output end of the power machinery. Power is input from the outer cover, passes through the driving friction plate, and is output from the driven plate assembly, which is fixedly fitted to the driven friction plate in the circumferential direction.

[0003] For motorcycle clutches with shock-absorbing springs, there is a very important assembly, as shown in the attached diagram of the instruction manual. Figure 5 , Figure 6 The image shows a core assembly in an existing motorcycle clutch with a shock-absorbing spring, namely the assembly consisting of an outer cover (drive hub) and a gear disc (clutch gear disc). It mainly includes an outer cover 1, a gear disc 2, and a pressure cap 3. During assembly, a support sleeve 502 is placed at the top of the riveting hole 501, and then the gear disc 2 is fitted onto the shaft sleeve 101 at the top center of the outer cover 1. This ensures that the through groove 402 on the gear disc 2 corresponds to the arc groove 401 on the outer cover 1, and that the support sleeve 502 is positioned within the arc-shaped hole 503. The shock-absorbing spring is then... Spring 403 is placed in through groove 402 and arc groove 401. Then, pressure cover 3 is fitted onto the shaft cylinder 101 at the top center of outer cover 1, and the receiving groove 404 on pressure cover 3 is fastened to the top of buffer spring 403. The top of support sleeve 502 abuts against the bottom wall of pressure cover 3 near the bottom opening of rivet hole 2 504. Finally, rivet 505 is inserted into rivet hole 2 504, support sleeve 502 and rivet hole 1 501 at the same time, and the two ends of rivet 505 are riveted together, thereby completing the assembly of outer cover (drive hub) and gear disk (clutch gear disk).

[0004] However, the assembly consisting of the outer cover (drive hub) and the gear disc (clutch gear disc) has a problem in use. Due to the design defect of the support sleeve 502, when the support sleeve 502 is subjected to axial pressure, the two ends of the support sleeve 502 are prone to collapse and deformation. This causes the gap between the bottom of the pressure cover 3 and the top of the outer cover 1 to become smaller, which causes the gear disc 2 to be crushed and prevents the buffer spring 403 from playing a buffering role. Utility Model Content

[0005] Based on the problems mentioned in the background art above, this utility model provides a motorcycle clutch outer cover assembly to solve the problem that due to the design defects of the support sleeve 502, when the support sleeve 502 is subjected to axial pressure during use, the two ends of the support sleeve 502 are prone to collapse and deformation, which causes the gap between the bottom of the pressure cover 3 and the top of the outer cover 1 to become smaller, causing the gear disk 2 to be crushed and the buffer spring 403 to fail to play a buffering role.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A motorcycle clutch housing assembly, comprising:

[0008] The outer cover has a shaft cylinder at its top center and a plurality of rivet holes arranged in an array on its top.

[0009] Support cylinder, wherein multiple support cylinders are provided and are respectively fixedly installed at the top opening of the corresponding rivet hole one. The outer diameter of the support cylinder is the same as the outer diameter of the support sleeve, the inner diameter of the support cylinder is half the inner diameter of the support sleeve, and a bulge is provided at the junction of the bottom of the support cylinder and the top of the outer cover. The top of the support cylinder is coated with a hardened layer.

[0010] A gear disk, which is fitted around the circumference of the shaft cylinder and located on top of the outer cover;

[0011] A pressure cap, which is fitted around the circumference of the shaft cylinder and located on top of the gear disk.

[0012] Based on the above technical solution, the present invention has made the following improvements:

[0013] Furthermore, the top array of the outer cover is provided with multiple arc grooves, the top array of the gear disk is provided with multiple through grooves, and the top array of the pressure cover is provided with multiple receiving grooves. The arc grooves, through grooves, and receiving grooves are positioned correspondingly, and a buffer spring is provided in the arc grooves, through grooves, and receiving grooves located at the same position.

[0014] Furthermore, the top array of the gear disk is provided with multiple arc-shaped holes, and the top array of the pressure plate is provided with multiple riveting holes II. The arc-shaped holes, riveting holes II, and the support cylinder are positioned correspondingly, and the support cylinder is located inside the arc-shaped holes. The top of the support cylinder abuts against the bottom wall of the pressure plate near the bottom opening of the riveting hole II. Riveting holes I, the support cylinder, and riveting holes II, which are located at the same position, are all riveted with rivets.

[0015] Furthermore, the hardened layer at the top of the support cylinder is a nickel-phosphorus layer.

[0016] The beneficial effects of this utility model are:

[0017] By fixing the support cylinder to the top of the rivet hole, and with the outer diameter of the support cylinder being the same as the outer diameter of the support sleeve in the original product, and the inner diameter of the support cylinder being half the inner diameter of the support sleeve in the original product, the thickness of the support cylinder is increased. The bulge at the junction of the bottom of the support cylinder and the top of the outer cover enhances the strength of the bottom of the support cylinder, and the hardened layer plated on the top of the support cylinder enhances the hardness of the top of the support cylinder. Ultimately, this makes the support cylinder more resistant to pressure and less prone to collapse or deformation at both ends. Attached Figure Description

[0018] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0019] Figure 1 This is a structural diagram of the outer cover in a motorcycle clutch outer cover assembly according to the present invention;

[0020] Figure 2 This is an assembly diagram of a motorcycle clutch cover assembly according to the present invention;

[0021] Figure 3 This is an exploded view of a motorcycle clutch cover assembly according to the present invention;

[0022] Figure 4 This is a cross-sectional view of a motorcycle clutch cover assembly according to the present invention;

[0023] Figure 5 This is an exploded view of the existing product described in the background section;

[0024] Figure 6 This is a cross-sectional view of the existing product described in the background art.

[0025] The attached diagram is labeled as follows:

[0026] 1. Outer cover; 101. Shaft cylinder; 2. Gear disc; 3. Pressure cap; 401. Arc groove; 402. Through groove; 403. Buffer spring; 404. Receiving groove; 501. Riveting hole one; 502. Support sleeve; 503. Arc-shaped hole; 504. Riveting hole two; 505. Rivet; 6. Support cylinder; 601. Bulge. Detailed Implementation

[0027] like Figures 1-6 As shown, a motorcycle clutch housing assembly includes:

[0028] Outer cover 1, with a shaft cylinder 101 at the top center of the outer cover 1, and multiple riveting holes 501 arranged in an array on the top of the outer cover 1;

[0029] Multiple support cylinders 6 are provided and are fixedly installed at the top opening of the corresponding rivet hole 501. The outer diameter of the support cylinder 6 is the same as the outer diameter of the support sleeve 502, and the inner diameter of the support cylinder 6 is half the inner diameter of the support sleeve 502, which makes the thickness of the support cylinder 6 double that of the support sleeve 502 in the original product. Furthermore, a bulge 601 is provided at the junction of the bottom of the support cylinder 6 and the top of the outer cover 1. The bulge 601 can enhance the connection strength at the junction of the bottom of the support cylinder 6 and the top of the outer cover 1, and also enhance the strength of the bottom of the support cylinder 6.

[0030] The top of the support cylinder 6 is coated with a hardened layer. Since the material of the clutch outer cover 1 is usually aluminum alloy, the material of the support cylinder 6 is also aluminum alloy so that the support cylinder 6 can be better welded to the support cylinder 6. In order to better coat the top of the support cylinder 6, the hardened layer is a nickel-phosphorus layer. The suitable substrates are steel, aluminum, and copper. The nickel-phosphorus layer is coated on the top of the support cylinder 6 by chemical plating, which can enhance the hardness of the top of the support cylinder 6.

[0031] Gear disk 2 is fitted around the shaft cylinder 101 and located on top of the outer cover 1. Pressure cover 3 is fitted around the shaft cylinder 101 and located on top of the gear disk 2. The top of the outer cover 1 is provided with multiple arc grooves 401, the top of the gear disk 2 is provided with multiple through grooves 402, and the top of the pressure cover 3 is provided with multiple receiving grooves 404. The arc grooves 401, through grooves 402 and receiving grooves 404 are in corresponding positions. A buffer spring 403 is provided in the arc grooves 401, through grooves 402 and receiving grooves 404 located at the same position.

[0032] The top array of the gear disk 2 is provided with multiple arc-shaped holes 503, and the top array of the pressure cover 3 is provided with multiple riveting holes 504. The arc-shaped holes 503, the riveting holes 504 and the support cylinder 6 are in corresponding positions, and the support cylinder 6 is located inside the arc-shaped holes 503. The top of the support cylinder 6 abuts against the bottom wall of the pressure cover 3 near the bottom opening of the riveting hole 504. The riveting hole 501, the support cylinder 6 and the riveting hole 504 located at the same position are all riveted with rivets 505.

[0033] During assembly, the gear disc 2 is fitted onto the circumference of the shaft cylinder 101, with the arc groove 401 and through groove 402 aligned, and the support cylinder 6 positioned within the arc hole 503. The buffer spring 403 is then placed within the through groove 402 and the arc groove 401. Next, the pressure cap 3 is fitted onto the circumference of the shaft cylinder 101, with the receiving groove 404 fastened to the top of the buffer spring 403. The top of the support cylinder 6 rests against the bottom wall of the pressure cap 3 near the bottom opening of the second riveting hole 504. Finally, the rivet 505 is simultaneously inserted into the second riveting hole 504, the support cylinder 6, and the first riveting hole 501, and the rivet 505 is then... 05. The two ends are riveted together to complete the assembly of the outer cover 1, gear disk 2 and pressure cover 3. When in use, after the support cylinder 6 is subjected to axial pressure, the thickness of the support cylinder 6 is twice that of the original support sleeve 502, and the bottom of the support cylinder 6 is also provided with a bulge 601, and the top of the support cylinder 6 is plated with a nickel-phosphorus layer. Ultimately, the pressure resistance of the entire support cylinder 6 is stronger, so that the two ends of the support cylinder 6 will not collapse or deform, and the gap between the bottom of the pressure cover 3 and the top of the outer cover 1 will not become smaller. Thus, the gear disk 2 will not be crushed, and the buffer spring 403 can still play a buffering role.

[0034] The present invention has been described in detail above. The specific embodiments are provided only to help understand the method and core idea of ​​the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A motorcycle clutch cover assembly, characterized in that: include: The outer cover (1) has a shaft cylinder (101) at the top center and a plurality of rivet holes (501) arranged in an array on the top of the outer cover (1). Support cylinder (6), multiple support cylinders (6) are provided and are respectively fixedly installed at the top opening of the corresponding rivet hole (501). The outer diameter of the support cylinder (6) is the same as the outer diameter of the support sleeve (502). The inner diameter of the support cylinder (6) is half the inner diameter of the support sleeve (502). A bulge (601) is provided at the junction of the bottom of the support cylinder (6) and the top of the outer cover (1). The top of the support cylinder (6) is coated with a hardened layer. Gear disk (2), which is fitted around the shaft cylinder (101) and located on top of the outer cover (1); A pressure cap (3) is fitted around the shaft cylinder (101) and located on top of the gear disk (2).

2. The motorcycle clutch cover assembly according to claim 1, characterized in that: The top array of the outer cover (1) is provided with multiple arc grooves (401), the top array of the gear disk (2) is provided with multiple through grooves (402), and the top array of the pressure cover (3) is provided with multiple receiving grooves (404). The arc grooves (401), through grooves (402) and receiving grooves (404) are in corresponding positions, and a buffer spring (403) is provided in the arc grooves (401), through grooves (402) and receiving grooves (404) located at the same position.

3. The motorcycle clutch cover assembly according to claim 1, characterized in that: The top array of the gear disk (2) is provided with multiple arc-shaped holes (503), and the top array of the cover (3) is provided with multiple riveting holes (504). The arc-shaped holes (503), riveting holes (504) and the support cylinder (6) are in corresponding positions, and the support cylinder (6) is located inside the arc-shaped holes (503). The top of the support cylinder (6) abuts against the bottom wall of the cover (3) near the bottom opening of the riveting hole (504). The riveting hole (501), the support cylinder (6) and the riveting hole (504) located at the same position are all riveted with rivets (505).

4. The motorcycle clutch cover assembly according to claim 1, characterized in that: The top hardened layer of the support cylinder (6) is a nickel-phosphorus layer.