A clutch assembly with disc spring arrangement

Abstract

A clutch assembly with disc spring structure, including flywheel, the flywheel is engaged with the output crankshaft of engine, the flywheel is opened first circular hole in the middle, the first circular hole is equipped with the input shaft of transmission, and the transmission input shaft is also fixedly connected with the inner hub, the both sides of the flywheel are equipped with first disc and second disc respectively, the flywheel is opened multiple limit hole and disc spring mounting hole symmetrically, the inner hub is equipped in outer hub, the inner hub is also installed with friction plate assembly, the top of the pressure plate is also equipped with compaction mechanism. Flywheel and outer hub are assembled together by pressing disc, first disc and second disc, disc spring can reduce the jitter of outer hub during flywheel rotation, so that flywheel will not transmit jitter to outer hub, so that clutch assembly power transmission and separation is more stable, secondly, when flywheel damage needs to be replaced, only flywheel needs to be replaced, without overall disassembly, maintenance is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of clutches, and in particular to a clutch assembly with a disc spring structure. Background Technology

[0002] The motorcycle clutch assembly is a key transmission component connecting the engine and the gearbox. Its main function is to achieve smooth engagement and disengagement of power during riding, facilitating starting, shifting gears, and stopping. It is located between the engine output and the gearbox input shaft.

[0003] In existing technology, the flywheel, which is generally used to connect to the output crankshaft of a motorcycle engine, is usually fixedly connected to the outer hub of the clutch. This causes the entire clutch to vibrate during starting or shifting due to the engine piston and crankshaft. This vibration cannot be eliminated because the engine output crankshaft and flywheel are fixedly connected. Secondly, the flywheel is a wear part and is easily damaged. Replacing the existing flywheel requires disassembling the entire clutch assembly and separating the flywheel from the outer hub. This usually involves removing the connecting screw and taking out all the components inside the outer hub, which is time-consuming. Utility Model Content

[0004] To overcome the aforementioned technical deficiencies, this utility model adopts the following technical solution:

[0005] A clutch assembly with a disc spring structure includes a flywheel that meshes with the output crankshaft of a motorcycle engine. A first circular hole is formed in the center of the flywheel, and an input shaft of a transmission is fitted into the first circular hole. The transmission input shaft is also fixedly connected to an inner hub. A first disc and a second disc are respectively fitted on both sides of the flywheel. Multiple limiting holes and disc spring mounting holes are symmetrically formed on the flywheel. Through holes are also formed on the end faces of the first and second discs relative to the limiting holes and disc spring mounting holes. The inner hub is fitted inside an outer hub, and the outer hub is also fixedly fitted to the flywheel. The inner hub is also fitted with a friction plate assembly. A pressure plate is fitted on the top of the outer hub, and a compaction mechanism is fitted on the top of the pressure plate. The compaction mechanism is also connected to a motorcycle hydraulic push rod.

[0006] Preferably, a clamping disc is also fitted on one side of the first disc, and a positioning hole is provided on the side of the clamping disc opposite to the first disc. The second disc is located between the flywheel and the outer hub, and multiple limiting blocks are fixedly installed on one end of the outer hub opposite to the second disc. Each limiting block extends into a corresponding limiting hole.

[0007] Preferably, each limiting block is also fixedly provided with a positioning post, each positioning post passing through the second disc, the flywheel and the first disc respectively, and extending into the corresponding positioning hole on the pressing disc.

[0008] Preferably, the outer hub has a disc spring retaining groove on the side opposite to the second disc, the disc spring retaining groove is arranged opposite to the disc spring mounting hole, and there are no less than two disc spring mounting holes, and a disc spring is installed in each disc spring mounting hole.

[0009] Preferably, the bottom of the inner hub is also equipped with a chassis, and a plurality of guide posts are fixedly arranged in the middle of the chassis. The guide posts are threaded inside, and each guide post passes through the inner hub and is connected to the pressure plate. The outer circumferential surface of the inner hub has a toothed structure. The inner hub also cooperates with a friction plate assembly, and the friction plate assembly includes a plurality of friction plates and a plurality of steel plates, and the friction plates and steel plates are alternately distributed.

[0010] Preferably, each friction plate has multiple protrusions on its outer edge, and the inner circle of each steel plate has a toothed structure that matches the toothed structure on the outer circumference of the inner hub.

[0011] Preferably, the edge of the outer hub is provided with multiple opening slots and multiple pre-tightening slots, and each pre-tightening slot is located between adjacent opening slots. The outer circumferential surface of the pressure plate is also provided with multiple clamping parts that cooperate with the pre-tightening slots.

[0012] Preferably, the pressure plate is further provided with a plurality of second circular holes, and each guide post passes through the second circular hole and cooperates with the compaction mechanism.

[0013] Preferably, the compaction mechanism includes a compaction seat, which is also connected to a motorcycle hydraulic push rod. The compaction seat is located on the upper part of the pressure plate, and the compaction seat is also provided with a plurality of third circular holes corresponding to the second circular holes. The compaction seat is also fitted with fastening screws, and one end of each fastening screw passes through the third circular hole and the second circular hole respectively and extends into the guide post for fitting. Each fastening screw is also fitted with a preload spring.

[0014] Preferably, the pressure plate is further provided with a hollow frustum, and a washer is fitted on the hollow frustum, the washer being located between the pressure plate and the compaction seat.

[0015] The beneficial effects of this utility model are as follows: The flywheel and outer hub are assembled and fixed together separately by means of a clamping disc, a first disc, and a second disc. During the rotation of the flywheel, the disc spring can reduce the vibration of the outer hub, so that the flywheel will not transmit the vibration to the outer hub. This makes the power transmission and disengagement of the clutch assembly smoother. Furthermore, when the flywheel is damaged and needs to be replaced, only the clamping disc needs to be removed to remove the first and second discs on both sides of the flywheel. Then the flywheel can be replaced without disassembling the entire clutch assembly for replacement, making maintenance more convenient. Attached Figure Description

[0016] Figure 1A three-dimensional assembly structure diagram of a clutch assembly with a disc spring structure; Figure 2 A bottom view schematic diagram of a clutch assembly with a disc spring structure; Figure 3 This is a top view schematic diagram of a clutch assembly with a disc spring structure; Figure 4 This is a three-dimensional exploded view of a clutch assembly with a disc spring structure. Figure 5 This is a schematic diagram of an exploded structure of a clutch assembly with a disc spring from another angle. Figure 6 This is a schematic diagram illustrating the installation principle of this utility model; In the diagram: flywheel 1, output crankshaft 2, first circular hole 3, input shaft 4, inner hub 5, first disc 6, second disc 7, limiting hole 8, disc spring mounting hole 9, outer hub 10, friction plate assembly 11, pressure plate 12, compaction mechanism 13, pressing disc 14, positioning hole 15, limiting block 16, positioning post 17, disc spring retaining groove 18, disc spring 19, chassis 20, guide post 21, friction plate 110, steel plate 111, protrusion 112, opening groove 22, pre-tightening groove 23, clamping part 24, second circular hole 25, compaction seat 130, third circular hole 131, fastening screw 132, pre-tightening spring 133, hollow frustum 26, and washer 27. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "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. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0019] Example 1: See Figure 1-6A clutch assembly with a disc spring structure includes a flywheel 1, which meshes with the output crankshaft 2 of a motorcycle engine to transmit power from the motorcycle engine to the clutch flywheel 1. A first circular hole 3 is formed in the center of the flywheel 1, and an input shaft 4 of a transmission is fitted into the first circular hole 3. The transmission input shaft 4 is also fixedly connected to an inner hub 5. A first disc 6 and a second disc 7 are respectively fitted on both sides of the flywheel 1. Multiple limiting holes 8 and disc spring mounting holes 9 are symmetrically formed on the flywheel 1. Disc spring 19 is installed in the disc spring mounting hole 9, and through holes are also opened on the end faces of the first disc 6 and the second disc 7 relative to the limiting hole 8 and the disc spring mounting hole 9. The inner wheel hub 5 is installed in the outer wheel hub 10, and the outer wheel hub 10 is also fixedly installed together with the flywheel 1. The inner wheel hub 5 is also installed in conjunction with the friction plate assembly 11. The top of the outer wheel hub 10 is also equipped with a pressure plate 12, and the top of the pressure plate 12 is also equipped with a compaction mechanism 13. The compaction mechanism 13 is also connected to the motorcycle hydraulic push rod. When the inner hub 5 rotates, it transmits power to the input shaft 4, thus transmitting power to the transmission. The inner hub 5 and outer hub 10 are connected via a friction plate assembly 11. The function of this invention is to control the compaction mechanism 13 via a motorcycle hydraulic push rod, causing the pressure plate 12 to connect the inner hub 5 and outer hub 10. The inner hub 5 and outer hub 10 can continuously separate and re-engage under the action of the compaction mechanism 13. When separated, power transmission is interrupted; when re-engaged, power transmission resumes. In contrast, traditional motorcycle clutches have a fixed connection between the flywheel 1 and outer hub 10, meaning the outer hub 10 is directly welded to the flywheel 1. However, this causes vibration during power transmission, reducing clutch life and accelerating wear. Furthermore, because the flywheel 1 and outer hub... The traditional integrated design of flywheel 1 and outer hub 10 requires the entire unit to be replaced if any part is damaged. This application adopts a split design, changing the assembly method of flywheel 1 and outer hub 10 from an integrated one-piece design to a split design. Specifically, the flywheel 1 and outer hub 10 are assembled and fixed together separately using a clamping disc 14, a first disc 6, and a second disc 7. During the rotation of flywheel 1, the disc spring 19 can reduce the vibration of outer hub 10. At the beginning of the rotation of flywheel 1, flywheel 1 will rotate relative to outer hub 10. This rotational displacement is limited. During the rotation, disc 19 will be compressed. The compression process is equivalent to buffering and reducing the vibration generated by the initial flywheel 1. When the compression reaches a certain degree, disc spring 19 will cause the second disc 7 to rotate synchronously with flywheel 1. In this way, the second disc 7 can also synchronously drive the outer hub 10 to rotate synchronously.

[0020] The above technical solution replaces the traditional method of directly connecting the flywheel 1 to the outer hub 10. The flywheel 1 and the outer hub 10 are assembled and fixed together separately by the clamping disc 14, the first disc 6 and the second disc 7. The disc spring 19 can buffer and reduce the vibration generated by the flywheel 1, so that the flywheel 1 will not transmit the vibration to the outer hub 10, thereby affecting the shifting effect, making the power transmission and disengagement of the clutch assembly smoother.

[0021] See Figure 5 A clamping disc 14 is also fitted on one side of the first disc 6. The clamping disc 14 can be used to assemble the first disc 6 and the second disc 7 on both sides of the flywheel 1. The clamping disc 14 also has a positioning hole 15 on the side of the first disc 6. The positioning hole 15 cooperates with the positioning post 17 on the side of the outer hub 10. The clamping disc 14 can also prevent the disc spring 19 from falling off. The second disc 7 is located between the flywheel 1 and the outer hub 10. A plurality of limiting blocks 16 are fixedly installed on one end of the outer hub 10 relative to the second disc 7. Each limiting block 16 extends into the corresponding limiting hole 8. When the limiting block 19 extends into the limiting hole 8, there will be a gap. The existence of this gap can cause the outer hub 10 and the flywheel 1 to have relative displacement (offset). Each limiting block 16 is also fixedly provided with a positioning post 17, which passes through the second disc 7, the flywheel 1 and the first disc 6 respectively, and extends into the corresponding positioning hole 15 on the pressing disc 14.

[0022] With the above technical solution, the first disc 6 and the second disc 7 are installed on both sides of the flywheel 1, and can buffer and reduce the vibration transmitted from the output crankshaft 2 to the flywheel 1 by the disc spring 19. Moreover, it does not need to be completely removed when a certain part needs to be replaced, which can make the transmission efficiency of the flywheel 1 better. This reduces the overall vibration of the clutch assembly, and makes the separation and engagement smoother.

[0023] See Figure 5 The outer hub 10 also has a disc spring retaining groove 18 on the side opposite to the second disc 7. The disc spring retaining groove 18 is arranged opposite to the disc spring mounting hole 9, and there are no fewer than two disc spring mounting holes 9, with a disc spring 19 installed in each disc spring mounting hole 9. During operation, the disc spring retaining groove 18 and the pressing disc 14 ensure that the disc spring 19 does not tilt, that is, the disc spring 19 is always in a flat position, which ensures better cushioning effect.

[0024] See Figure 4The bottom of the inner hub 5 is also equipped with a chassis 20. Multiple guide posts 21 are fixedly arranged in the middle of the chassis 20. The chassis 20 is located inside the outer hub 10. The guide posts 21 are threaded inside, and each guide post 21 passes through the inner hub 5 and is connected to the pressure plate 12. The guide posts 21 are used to be fitted with fastening screws 132. The outer circumferential surface of the inner hub 5 has a toothed structure. The inner hub 5 also cooperates with the friction plate assembly 11. The friction plate assembly 11 includes multiple friction plates 110 and multiple steel plates 111, and the friction plates 110 and steel plates 111 are alternately distributed.

[0025] With the above technical solution, during installation, the chassis 20 is first installed inside the outer hub 10, and then the round hole on the inner hub 5 is aligned with each guide post 21 so that the guide post 21 passes through the inner hub 5. Then, the friction plate 110 and the steel plate 111 are alternately fitted onto the inner hub 5. In order to prevent the steel plates from rotating relative to each other, the inner circle of the steel plate 111 is designed with a toothed structure and meshes with the toothed structure on the inner hub 5. This ensures that the steel plate 111 will not rotate and ensures the friction between the steel plate 111 and the friction plate 110.

[0026] See Figure 4-6 Each friction plate 110 has multiple protrusions 112 on its outer edge. In order to further ensure friction, the protrusions 112 on each friction plate 110 are all set in the opening groove 22. This ensures that each friction plate 110 will not rotate. The inner circle of each steel plate 111 has a toothed structure and matches the toothed structure of the outer circumference of the inner hub 5.

[0027] See Figure 5-6 The outer hub 10 is provided with multiple opening slots 22 and multiple pre-tightening slots 23 on its edge, and each pre-tightening slot 23 is located between adjacent opening slots 22. The outer circumferential surface of the pressure plate 12 is also provided with multiple clamping parts 24 that cooperate with the pre-tightening slots 23. The clamping parts 24 on the pressure plate 12 can move up and down in the pre-tightening slots 23. The pre-tightening slots 23 are generally provided with limiting plates (not shown in the figure). The limiting plates can prevent the clamping parts 24 from disengaging from the pre-tightening slots 23. In this way, the pressure plate 12 will press multiple steel sheets 111 and friction plates 110 together under the action of the pressing seat 130. During the pressing process, the chassis 20 at the bottom of the inner hub 5 will press against the outer hub 10, thereby causing the guide column 21 to drive the inner hub 5 to rotate. This can achieve separation and engagement, thereby achieving the separation and transmission of power.

[0028] See Figure 4-5 The pressure plate 12 is also provided with a plurality of second circular holes 25, and each guide post 21 passes through the second circular hole 25 and cooperates with the compaction mechanism 13.

[0029] The compaction mechanism 13 includes a compaction seat 130, which is also connected to a motorcycle hydraulic push rod. The compaction seat 130 is located on the upper part of the pressure plate 12, and the compaction seat 130 is also provided with a plurality of third round holes 131 corresponding to the second round hole 25. The compaction seat 130 is also fitted with fastening screws 132, and one end of each fastening screw 132 passes through the third round hole 131 and the second round hole 25 respectively and extends into the guide post 21 for fitting. Each fastening screw 132 is also fitted with a preload spring 133.

[0030] With the above technical solution, when it is necessary to control the engagement or disengagement of the clutch, the hydraulic push rod is used to make the compaction seat 130 rise and fall along the fastening screw 132. When engaging, power is transmitted. During this process, the compaction seat 130 will compress the pre-tension spring 133, causing the pressure plate 12 to approach the outer hub 10. Due to the force on the pressure plate 12, multiple friction plates 110 and steel plates 111 will be compacted. During this process, the chassis 20 will continuously approach the inner bottom of the outer hub 10, thus achieving engagement with the outer hub 10. In this way, the outer hub 10 will drive the inner hub 5 and the friction plate assembly 11 to rotate as a whole, causing the input shaft 4 to rotate. When disengagement is required, the hydraulic push rod releases the pressure. Under the action of the pre-tension spring 133, the pressure plate 12 will move the inner hub 5 away as a whole, causing the chassis 20 to disengage from the inner bottom of the outer hub 10, thereby interrupting the power.

[0031] See Figure 4 The pressure plate 12 is also provided with a hollow frustum 26, which is a guide rod of the compaction seat 130. When the compaction seat 130 moves, it will slide on the hollow frustum 26. A washer 27 is also fitted on the hollow frustum 26. The washer 27 is located between the pressure plate 12 and the compaction seat 130. The washer 27 mainly reduces the impact wear of the compaction seat 130 on the pressure plate 12.

[0032] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A clutch assembly with a disc spring structure, comprising a flywheel (1), characterized in that, The flywheel (1) meshes with the output crankshaft (2) of the motorcycle engine. A first circular hole (3) is opened in the middle of the flywheel (1). The input shaft (4) of the transmission is installed in the first circular hole (3), and the input shaft (4) of the transmission is also fixedly connected to the inner hub (5). A first disc (6) and a second disc (7) are respectively installed on both sides of the flywheel (1). A plurality of limiting holes (8) and disc spring mounting holes (9) are symmetrically opened on the flywheel (1). Disc springs (19) are installed in the disc spring mounting holes (9), and the first disc (6) is fixedly connected to the inner hub (5). Through holes are also provided on the end faces of the first disc (6) and the second disc (7) relative to the limiting hole (8) and the disc spring mounting hole (9). The inner hub (5) is fitted inside the outer hub (10). The outer hub (10) is also fixedly fitted together with the flywheel (1). The inner hub (5) is also fitted with the friction plate assembly (11). The top of the outer hub (10) is also fitted with a pressure plate (12). The top of the pressure plate (12) is also fitted with a compaction mechanism (13). The compaction mechanism (13) is also connected to the motorcycle hydraulic push rod.

2. The clutch assembly with disc spring structure according to claim 1, characterized in that, A clamping disc (14) is also fitted on one side of the first disc (6). The clamping disc (14) has a positioning hole (15) on the side of the first disc (6) opposite to the first disc (6). The second disc (7) is located between the flywheel (1) and the outer hub (10). A plurality of limiting blocks (16) are fixedly installed on one end of the outer hub (10) opposite to the second disc (7). Each limiting block (16) extends into the corresponding limiting hole (8).

3. The clutch assembly with disc spring structure according to claim 1, characterized in that, Each limiting block (16) is also fixedly provided with a positioning post (17), each positioning post (17) passing through the second disc (7), the flywheel (1) and the first disc (6) respectively, and extending into the corresponding positioning hole (15) on the pressing disc (14).

4. The clutch assembly with disc spring structure according to claim 1, characterized in that, The outer hub (10) has a disc spring retaining groove (18) on one side relative to the second disc (7). The disc spring retaining groove (18) is arranged opposite to the disc spring mounting hole (9), and there are no less than two disc spring mounting holes (9). Each disc spring mounting hole (9) is fitted with a disc spring (19).

5. The clutch assembly with disc spring structure according to claim 1, characterized in that, The bottom of the inner hub (5) is also equipped with a chassis (20). Multiple guide posts (21) are fixedly arranged in the middle of the chassis (20). The guide posts (21) are threaded inside, and each guide post (21) passes through the inner hub (5) and is connected to the pressure plate (12). The outer circumferential surface of the inner hub (5) has a toothed structure. The inner hub (5) also cooperates with the friction plate assembly (11). The friction plate assembly (11) includes multiple friction plates (110) and multiple steel plates (111), and the friction plates (110) and steel plates (111) are alternately distributed.

6. The clutch assembly with disc spring structure according to claim 5, characterized in that, Each friction plate (110) has multiple protrusions (112) on its outer edge, and the inner circle of each steel plate (111) has a toothed structure that matches the toothed structure on the outer circumference of the inner hub (5).

7. The clutch assembly with disc spring structure according to claim 1, characterized in that, The outer hub (10) is also provided with multiple opening slots (22) and multiple pre-tightening slots (23) on its edge, and each pre-tightening slot (23) is located between adjacent opening slots (22). The outer circumferential surface of the pressure plate (12) is also provided with multiple clamping parts (24) that cooperate with the pre-tightening slots (23).

8. The clutch assembly with disc spring structure according to claim 5, characterized in that, The pressure plate (12) is also provided with a plurality of second circular holes (25), and each guide post (21) passes through the second circular hole (25) and cooperates with the compaction mechanism (13).

9. The clutch assembly with disc spring structure according to claim 8, characterized in that, The compaction mechanism (13) includes a compaction seat (130), which is also connected to a motorcycle hydraulic push rod. The compaction seat (130) is located on the upper part of the pressure plate (12), and the compaction seat (130) is also provided with a plurality of third round holes (131) corresponding to the second round hole (25). The compaction seat (130) is also fitted with fastening screws (132), and one end of each fastening screw (132) passes through the third round hole (131) and the second round hole (25) respectively, and extends into the guide post (21) for fitting. Each fastening screw (132) is also fitted with a preload spring (133).

10. The clutch assembly with disc spring structure according to claim 9, characterized in that, A hollow frustum (26) is also provided on the pressure plate (12), and a washer (27) is also fitted on the hollow frustum (26). The washer (27) is located between the pressure plate (12) and the compaction seat (130).

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