A slip clutch for a motorcycle

Abstract

This utility model discloses a slipper clutch for motorcycles, comprising a lower pressing body, an upper pressing body, a connecting assembly, and a lifting plate. The lower pressing body has a first pressing part, evenly distributed connecting posts, and a mating part with sliding protrusions; the upper pressing body includes a mating inclined surface, a limiting groove, and a second pressing part. The friction plate assembly has internal splines, and the outer circumferential surface of the sliding protrusion and corresponding parts of the upper pressing body have external splines, forming a spline-protrusion double-guide structure. The connecting posts are axially connected to the lifting plate through the connecting assembly. The mating inclined surface slides with the sliding protrusion to reduce clutch engagement shock; the limiting groove prevents the connecting assembly from disengaging; the first and second pressing parts are inlaid with wear-resistant alloy steel sheets to improve wear resistance. This structure, through spline optimization, connection reinforcement, and the application of wear-resistant materials, achieves improved transmission efficiency, reduces clutch jerking, and meets the requirements for torque transmission efficiency, smooth operation, and long service life. This utility model applies to the technical field of motorcycle clutches.

Description

Technical Field

[0001] This invention relates to the field of clutch technology, and in particular to a slipper clutch for motorcycles. Background Technology

[0002] In motorcycle powertrain systems, the clutch, as a core transmission component, is responsible for controlling the engagement / disengagement of engine power and the gearbox. Its performance directly affects ride smoothness, transmission efficiency, and component lifespan. Traditional motorcycle clutches transmit torque through the clamping force between friction plates, but this has the following significant problems: the traditional spline-guided structure only performs torque transmission and lacks smooth control over axial movement during clutch engagement, further exacerbating the jerking problem. Despite some improvements in materials and structural technologies, the issue of synergistic optimization of clutch smoothness remains unresolved.

[0003] To address the aforementioned problems, this utility model provides a slipper clutch for motorcycles. The clutch has a clutch guide structure and is combined with a spline engagement and a connecting clamping assembly, thereby improving the smoothness of the clutch engagement process, transmission efficiency, and service life. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a slipper clutch for motorcycles. The clutch has a clutch guide structure and is combined with a spline engagement and a connecting clamping assembly, thereby improving the smoothness of the clutch engagement process, transmission efficiency and service life.

[0005] The technical solution adopted by this utility model to solve its technical problem is: This utility model provides a slip clutch for a motorcycle, which includes a lower pressure body, an upper pressure body, a connecting assembly, and a lifting plate. The connecting assembly and the lifting plate work together to realize the axial connection between the lower pressure body and the upper pressure body. A friction plate assembly is assembled between the lower pressure body and the upper pressure body. The lower pressing body is provided with a first pressing part, a connecting part, and a mating part. The upper pressing body includes a mating inclined surface that forms a sliding fit with the sliding protrusion, a limiting groove that forms an axial limit with the connecting assembly, and a second pressing part that mates with the friction plate assembly. The two axial ends of the friction plate assembly respectively form contact fits with the first pressing part and the second pressing part. The connecting part has connecting posts evenly distributed along the circumferential direction. The mating part is provided with a sliding protrusion that forms a sliding limit with the upper pressing body. The inner circumferential surface of the friction plate assembly is machined with evenly distributed internal splines. The outer circumferential surface of the sliding protrusion and the corresponding mating part of the upper pressing body are provided with external spline structures adapted to the internal splines. The connecting column of the lower pressing body axially passes through the limiting slot and forms a connection with the lifting plate. Wear-resistant alloy steel sheets are embedded on the friction mating surfaces of the first pressing part and the second pressing part.

[0006] As described above, in a slip clutch for a motorcycle, the friction plate assembly consists of a plurality of active friction plates and a plurality of driven friction plates. The active friction plates are provided with a plurality of friction protrusions evenly distributed on both sides, and the active friction plates and the driven friction plates are arranged alternately and at intervals along the axial direction.

[0007] As described above, a slip clutch for a motorcycle has an oil hole on the slip protrusion and the mating inclined surface, the oil hole being for the passage of lubricating oil.

[0008] As described above, in a type of slip clutch for a motorcycle, there are three slip protrusions and three mating inclined surfaces, which are symmetrically distributed at 120° along the circumferential direction.

[0009] As described above, a slip clutch for a motorcycle includes a connecting assembly comprising several springs and several bolts. The springs are sleeved on the outside of the connecting post, and the two ends of the springs respectively form a limiting engagement with the bottom surface of the limiting slot and the inner side surface of the lifting plate. The bolts pass through the through hole of the lifting plate and form a threaded connection with the threaded hole on the end face of the connecting post.

[0010] As described above, in a slip clutch for a motorcycle, the lifting plate has a circular cross-section and a through hole for bolts to pass through.

[0011] The beneficial effects of this utility model are as follows: The clutch of this utility model achieves a stable connection between the lower pressure body and the upper pressure body through the evenly distributed connecting columns and lifting plates, ensuring uniform distribution of clamping force and avoiding stress concentration; the sliding cam and the upper pressure body adopt an external spline fit to form a spline-cam double-guide transmission structure, which allows axial movement of the friction plate assembly and can efficiently transmit torque. Combined with the sliding cam and inclined guide design, it significantly improves the smoothness of the clutch engagement process; the overall structure works in conjunction with the spline transmission and connecting components. Both the first and second pressing parts are inlaid with wear-resistant alloy steel sheets to improve wear resistance. This combined design achieves a 15% increase in transmission efficiency, a 60% reduction in jerking sensation, and a doubling of the maintenance cycle. It has the advantages of high-efficiency transmission, smooth clutch engagement, and long service life, meeting the core requirements of clutches for torque transmission efficiency, smooth movement, and long service life. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a structural view of the present invention; Figure 2 This is an exploded structural view of the present invention; Figure 3 This is a structural view of the compression body; Figure 4 This is a structural view of the upper pressure body; Figure 5 This is a partial cross-sectional view of the compression body; Figure 6 This is a partial sectional view of the upper pressure body. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1 and Figure 6 As shown, in this embodiment, the present invention includes a lower pressing body 1, an upper pressing body 2, a connecting component 3, and a lifting plate 4. The connecting component 3 and the lifting plate 4 work together to realize the axial connection between the lower pressing body 1 and the upper pressing body 2. A friction plate assembly 5 is assembled between the lower pressing body 1 and the upper pressing body 2. The lower pressing body 1 is provided with a first pressing part 10, a connecting part and a mating part. The upper pressing body 2 includes a mating inclined surface 20 that forms a sliding fit with the sliding protrusion 12, a limiting groove 21 that forms an axial limit with the connecting component 3, and a second pressing part 22 that mates with the friction plate assembly 5. The two axial ends of the friction plate assembly 5 respectively form a contact fit with the first pressing part 10 and the second pressing part. The connecting part has connecting posts 11 evenly distributed along the circumferential direction. The mating part is provided with a sliding protrusion 12 that forms a sliding limit with the upper pressing body 2. The inner circumferential surface of the friction plate assembly 5 is machined with evenly distributed internal splines. The outer circumferential surface of the sliding protrusion 12 and the corresponding mating part of the upper pressing body 2 are provided with external spline structures adapted to the internal splines. The connecting column 11 of the lower pressing body 1 axially penetrates the limiting groove 21 and forms a connection with the lifting plate 4. Wear-resistant alloy steel sheets 6 are embedded on the friction mating surfaces of the first pressing part 10 and the second pressing part 22.

[0017] Therefore, the lower pressing body 1 and the upper pressing body 2 serve to clamp the friction plate assembly 5. The first pressing part 10 of the lower pressing body 1 and the upper pressing body 2 respectively contact the two sides of the friction plate assembly 5 to provide clamping force. The lower pressing body 1 is formed by an integrated casting process, integrating the first pressing part 10, the connecting part and the mating part. The connecting columns 11 are evenly distributed and connected to the upper pressing body 2 through the connecting component 3 and the lifting plate 4. The evenly distributed design can ensure that the connection force is evenly distributed and avoid stress concentration. The sliding protrusion 12 serves to rotate and guide the upper pressing body 2. The external spline of the sliding protrusion 12 and the corresponding external spline of the upper pressing body 2 respectively engage with the internal spline of the friction plate assembly 5, allowing the friction plate assembly 5 to move along the axial direction. This design forms a spline-protrusion double guide transmission structure. The connecting component 3 and the lifting plate 4 serve to firmly connect the lower pressing body 1 and the upper pressing body 2 and maintain a stable clamping force.

[0018] The upper pressure body 2 provides support and fixation for the mating inclined surface 20, the limiting groove 21, and the second pressing part 22. The mating inclined surface 20 and the sliding protrusion of the lower pressure body 1 form a sliding guide fit, realizing smooth axial movement during the clutch process and reducing the impact and jerking during clutch engagement. The limiting groove 21 provides axial limit for the connecting assembly 3. At the same time, the groove design prevents the connecting assembly 3 from coming out during the movement of the upper pressure body 2, ensuring the stability of the movement. The second pressing part 22 contacts and engages with the other side of the friction plate assembly 5, working together with the first pressing part 10 of the lower pressure body 1 to press the friction plate, transmit torque, and bear axial load.

[0019] The friction mating surfaces of the first pressing part 10 and the second pressing part 22 are both inlaid with the wear-resistant alloy steel sheet 6. The wear-resistant alloy steel sheet 6 plays a role in reducing wear, thereby significantly improving the wear resistance performance.

[0020] This invention achieves efficient torque transfer, smooth clutch engagement, and long service life through spline structure optimization, mechanical connection structure reinforcement, and the application of wear-resistant materials. Compared with traditional clutch devices, its transmission efficiency is increased by 15%, jerking sensation is reduced by 60%, and maintenance cycle is doubled.

[0021] Furthermore, in this embodiment, the friction plate assembly 5 consists of a plurality of active friction plates 50 and a plurality of driven friction plates 51. The active friction plates 50 have a plurality of friction protrusions evenly distributed on both sides. The active friction plates 50 and the driven friction plates 51 are arranged alternately along the axial direction. Thus, the alternating arrangement of the driven friction plates 51 and the active friction plates 50 forms multiple friction pairs. The increased contact area of ​​these multiple friction pairs significantly improves torque transmission capability. The alternating arrangement forms radial heat dissipation channels, greatly improving heat dissipation efficiency. The friction plate assembly 5 is a modular design, allowing for overall disassembly and removal of damaged individual plates, reducing maintenance costs.

[0022] Furthermore, in this embodiment, the sliding protrusion 12 and the mating inclined surface 20 are provided with oil holes for lubricating oil to pass through. Thus, the oil holes are connected to the clutch lubrication circuit (such as pump-supply or splash lubrication), ensuring continuous oil supply throughout the clutch's entire operating cycle. Through its core functions of lubrication and friction reduction, heat dissipation and cooling, and wear and life extension, the clutch achieves high efficiency, smoothness, and long service life.

[0023] Furthermore, in this embodiment, there are three sliding protrusions 12 and three mating inclined surfaces 20, symmetrically distributed at 120° along the circumference. This symmetrical distribution of the three sliding protrusions 12 and the mating inclined surfaces 20 ensures uniform force distribution during rotation, avoiding vibration or wear caused by eccentric loads. It also ensures that each sliding protrusion 12 bears an equal torque, reducing stress concentration and improving structural stability. Moreover, the manufacturing process for three sliding protrusions 12 is relatively simple and cost-effective. Using more protrusions would significantly increase manufacturing costs, representing a trade-off between structural mechanics and cost-effectiveness.

[0024] Furthermore, in this embodiment, the connecting component 3 includes several springs 30 and several bolts 31. The springs 30 are sleeved on the outside of the connecting column 11. The two ends of the springs 30 form a limiting fit with the bottom surface of the limiting slot 21 and the inner side surface of the lifting plate 4, respectively. The bolts 31 pass through the through hole of the lifting plate 4 and form a threaded connection with the threaded hole on the end face of the connecting column 11. Therefore, the spring 30 absorbs the impact energy generated during engagement / disengagement through elastic deformation, reducing the impact of vibration on the clutch and thus further improving stability. Furthermore, when the clutch is working, the friction plate assembly 5 generates high temperatures, and the elastic deformation of the spring 30 can compensate for the change in axial clearance between the lifting plate 4 and the lower pressure body 1 caused by thermal expansion, maintaining a constant clamping force and preventing slippage or jamming. The bolt 31 passes through the through hole of the lifting plate 4 and forms a threaded connection with the threaded hole on the end face of the connecting column 11, fixing the lower pressure body 1, the upper pressure body 2, and the lifting plate 4 as a whole, ensuring the stable transmission of the initial compression and clamping force of the spring 30. The design of the spring 30 and the bolt 31 achieves high efficiency, smoothness, and long service life of the clutch through the synergistic effect of elastic buffering and rigid fixation.

[0025] Furthermore, in this embodiment, the lifting plate 4 has a circular cross-section, and the circular ring has a through hole for the bolt 31 to pass through. Thus, the circular design of the lifting plate 4 avoids localized stress concentration, and the circular design increases the ease of assembly, allowing assembly without special alignment. The through hole design allows the bolt 31 to pass through the lifting plate 4 and connect with the lower pressure body 1.

[0026] The working principle of this utility model is as follows: This invention's clutch achieves efficient torque transfer through the coordinated design of elastic clamping by spring 30 and rigid fixing by bolt 31. When the clutch disengages, the clamping force is released, and the friction plate assembly 5 can move axially. When the clutch engages, spring 30 drives lifting plate 4 to generate uniform clamping force, so that the friction plate assembly 5 is basically engaged with the wear-resistant alloy steel sheet 6 of lower pressure body 1 and upper pressure body 2. The sliding protrusion 12 and the mating inclined surface 20 guide the engagement, making the engagement process smoother, and so on.

[0027] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., 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 utility model 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 utility model.

[0028] The above embodiments do not limit the scope of protection of this utility model. All equivalent modifications and variations made by those skilled in the art without departing from the overall concept of this utility model shall still fall within the scope of this utility model.

Claims

1. A slipper clutch for a motorcycle, comprising a lower pressure body (1), an upper pressure body (2), a connecting assembly (3), and a lifting plate (4), wherein the connecting assembly (3) and the lifting plate (4) cooperate to achieve an axial connection between the lower pressure body (1) and the upper pressure body (2), characterized in that, A friction plate assembly (5) is assembled between the lower pressure body (1) and the upper pressure body (2). The lower pressing body (1) is provided with a first pressing part (10), a connecting part and a mating part. The upper pressing body (2) includes a mating inclined surface (20) that forms a sliding fit with the sliding protrusion (12), a limiting groove (21) that forms an axial limit with the connecting component (3), and a second pressing part (22) that mates with the friction plate assembly (5). The two axial ends of the friction plate assembly (5) respectively form a contact fit with the first pressing part (10) and the second pressing part. The connecting part is provided with connecting posts (11) evenly distributed along the circumferential direction. The mating part is provided with a sliding protrusion (12) that forms a sliding limit with the upper pressing body (2). The inner circumferential surface of the friction plate assembly (5) is machined with evenly distributed internal splines. The outer circumferential surface of the sliding protrusion (12) and the corresponding mating part of the upper pressing body (2) are provided with an external spline structure that is adapted to the internal spline. The connecting column (11) of the lower pressing body (1) axially passes through the limiting slot (21) and forms a connection with the lifting plate (4). Wear-resistant alloy steel sheets (6) are inlaid on the friction mating surfaces of the first pressing part (10) and the second pressing part (22).

2. A slipper clutch for a motorcycle according to claim 1, characterized in that: The friction plate assembly (5) consists of several active friction plates (50) and several driven friction plates (51). Several friction protrusions are evenly arranged on both sides of the active friction plate (50). The active friction plate (50) and the driven friction plate (51) are arranged alternately along the axial direction.

3. A slipper clutch for a motorcycle according to claim 1, characterized in that: The sliding protrusion (12) and the mating inclined surface (20) are provided with oil holes for lubricating oil to pass through.

4. A slipper clutch for a motorcycle according to claim 1, characterized in that: The number of the sliding protrusion (12) and the number of the mating inclined surface (20) are both three, and they are symmetrically distributed at 120° along the circumferential direction.

5. A slipper clutch for a motorcycle according to claim 1, characterized in that: The connecting assembly (3) includes several springs (30) and several bolts (31). The springs (30) are sleeved on the outside of the connecting column (11). The two ends of the springs (30) form a limiting fit with the bottom surface of the limiting slot (21) and the inner side surface of the lifting plate (4), respectively. The bolts (31) pass through the through hole of the lifting plate (4) and form a threaded connection with the threaded hole on the end face of the connecting column (11).

6. A slipper clutch for a motorcycle according to claim 5, characterized in that: The lifting plate (4) has a circular cross-section and a through hole for the bolt (31) to pass through.

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