A torque adaptive wet multi-plate clutch

Abstract

The embodiment of the present invention discloses a torque-adaptive wet multi-plate clutch, which includes a clutch cover, a friction plate steel sheet assembly, a pressure plate, a preload spring, a center sleeve, and a lifting plate. The pressure plate is arranged in the clutch cover; the bottom of the friction plate steel sheet assembly is arranged on the pressure plate in the clutch cover and is connected to the clutch cover in a snap-fit ​​manner; the bottom of the center sleeve is arranged above the pressure plate and the annular protrusion is crimped on the friction plate steel sheet assembly; the lifting plate is connected to the top of a plurality of connecting columns; the preload spring is arranged between the bottom of the lifting plate and the bottom of the center sleeve, and a spiral lifting structure is also arranged between the lifting plate and the center sleeve. The torque-adaptive wet multi-plate clutch of the embodiment of the present invention has a simple structure, is easy to install, works reliably, is low in cost, and is easy to repair and maintain; it can realize clutch torque transmission adaptation through a relatively simple structure; while ensuring the clutch transmission torque, it can effectively reduce the preload of the clutch spring, thereby achieving the purpose of reducing the handle operating force value; it is suitable for large-scale use of motorcycles with large torque and light operation requirements.

Description

Technical Field

[0001] The present invention relates to the technical field related to clutches, and in particular to a torque adaptive wet multi-plate clutch. Background Art

[0002] With the upgrading of domestic motorcycle consumption and the development of the motorcycle market, two-wheeled motorcycles are becoming more powerful, and users have also put forward higher requirements for the driving quality of the whole vehicle. This requires the clutch to transmit greater torque while maintaining flexible and light clutch operation. In order to alleviate the contradiction between clutch performance and operational flexibility, the hydraulically operated clutch came into being. The hydraulically operated clutch reduces the friction loss of the previous cable-operated system to achieve the purpose of reducing the clutch handle operating force. However, as the clutch transmission torque increases further, the clutch spring preload also increases further, and the hydraulically operated clutch is also greatly reduced in terms of ease of operation. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present invention discloses a torque adaptive wet multi-plate clutch.

[0004] The torque adaptive wet multi-plate clutch may include a clutch cover, a friction plate steel sheet assembly, a pressure plate, a preload spring, a center sleeve, a lifting plate, a release bearing and a clutch release shaft; the pressure plate is arranged in the clutch cover; and a plurality of connecting columns perpendicular to the pressure plate are arranged on the pressure plate; the bottom of the friction plate steel sheet assembly is arranged on the pressure plate in the clutch cover; and the outer side of the friction plate steel sheet assembly is snap-connected to the clutch cover; the upper end of the center sleeve protrudes radially outward to form an annular protrusion, and a plurality of through holes are arranged at the bottom of the center sleeve ; In the installed state, each of the connecting columns passes through one of the through holes, so that the bottom of the center sleeve is arranged above the pressure plate, and the annular protrusion is crimped on the top of the friction plate steel sheet assembly; the lifting plate is connected to the tops of multiple connecting columns; the clutch release shaft is connected to the lifting plate through the release bearing; the pre-compression spring is arranged between the bottom of the lifting plate and the bottom of the center sleeve, so as to compress the friction plate steel sheet assembly between the pressure plate and the annular protrusion; and a spiral lifting structure is also arranged between the lifting plate and the center sleeve.

[0005] According to some selected embodiments of the present invention, a plurality of first protrusions are axially upwardly arranged in the center sleeve, and the top surfaces of the first protrusions are spirally curved surfaces; a plurality of second protrusions are axially downwardly arranged at the bottom of the lifting plate, and the bottom surfaces of the second protrusions are spirally curved surfaces; in the installed state, the top surface of each first protrusion can complementarily cooperate with the bottom surface of one of the second protrusions to form the spiral lifting structure.

[0006] According to some selected embodiments of the present invention, a ball bearing is further arranged between the top surface of the first protrusion and the bottom surface corresponding to the second protrusion.

[0007] According to some selected embodiments of the present invention, a first groove is provided on the top surface of the first protrusion; a second groove is provided on the bottom surface of the second protrusion; in the installed state, the first groove and the second groove form a mounting groove; the ball is arranged in the mounting groove.

[0008] According to some selected embodiments of the present invention, a plurality of notches are provided on the clutch outer cover; a plurality of protrusions are formed radially outward on the friction plates in the friction plate steel plate assembly; in the installed state, each of the protrusions is engaged in one of the notches, so that the outer side of the friction plate steel plate assembly is engaged and connected to the clutch outer cover.

[0009] According to some selected embodiments of the present invention, the pre-stressed spring is sleeved on the connecting column.

[0010] According to some selected embodiments of the present invention, the lifting plate is connected to the top of the plurality of connecting columns via threaded connectors.

[0011] Compared with the prior art, the torque adaptive wet multi-plate clutch of the embodiment of the present invention has the following beneficial effects:

[0012] The torque adaptive wet multi-plate clutch of the embodiment of the present invention can realize clutch torque transmission adaptation through a relatively simple structure, has a simple structure, reliable function, and low cost, and is suitable for large-scale use in motorcycles that require high torque and light operation.

[0013] Some additional features of the present invention may be explained in the following description. Some additional features of the present invention will be apparent to those skilled in the art by inspection of the following description and corresponding drawings or by understanding the production or operation of the embodiments. The features disclosed in the present invention may be realized and achieved by practice or use of the various methods, means and combinations of the specific embodiments described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute a limitation of the present invention. In each figure, the same reference numerals represent the same components.

[0015] Figure 1 is a schematic diagram of an exploded structure of a torque adaptive wet multi-plate clutch according to some embodiments of the present invention;

[0016] Figure 2 A schematic cross-sectional view of a torque adaptive wet multi-plate clutch according to some embodiments of the present invention;

[0017] Figure 3 is a structural schematic diagram of a lifting plate and a pressure plate in a torque adaptive wet multi-plate clutch in a connected state according to some embodiments of the present invention;

[0018] Figure 4 Schematic diagram of a center sleeve in a torque adaptive wet multi-plate clutch according to some embodiments of the present invention. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0020] It should be noted that if the terms "first", "second", etc. are involved in the specification and claims of the present invention and the above-mentioned drawings, they are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, if the terms "including" and "having" and any of their variations are involved, it is intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0021] In the present invention, if the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0022] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0023] In addition, in the present invention, the terms "installed", "set", "provided with", "connected", "connected", "socketed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0025] Based on the aforementioned problems that the traditional clutch device has the contradiction between transmitting large torque and being flexible and light to operate, the embodiment of the present invention discloses a torque-adaptive wet multi-plate clutch.

[0026] The torque-adaptive wet multi-plate clutch of the embodiment of the present invention can use a smaller spring preload while transmitting the same torque, thereby achieving flexible and light clutch separation operation. At the same time, since the clutch separation shaft moves inward to achieve clutch separation, it has better assembly and maintainability, and avoids abnormal use damage caused by reduced clutch free travel during use.

[0027] The principle of the technical solution is: through the optimized design of the clutch center sleeve and the clutch pressure plate, the two generate relative torque during the clutch torque transmission process, and the magnitude of the relative torque changes with the instantaneous load of the clutch. Specifically, through the spiral lifting structure set at the corresponding position on the clutch lifting plate and the clutch center sleeve, the generated relative torque is converted into a clamping force that changes with the instantaneous load of the clutch, and the friction plate and the steel plate are pressed together with the pre-compression spring. Therefore, the clutch capacity is dynamically increased within a certain range with the instantaneous torque of the clutch, so it is called a torque adaptive clutch.

[0028] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] like Figure 1 , Figure 2As shown, the torque adaptive wet multi-plate clutch may include a clutch cover 1, a friction plate steel plate assembly 2, a pressure plate 3, a pre-load spring 4, a center sleeve 5, a lifting plate 7, a release bearing 8 and a clutch release shaft 9.

[0030] The pressure plate 3 is arranged in the clutch housing 1. Figure 2 And a plurality of connecting columns 31 perpendicular to the pressure plate 3 are arranged on the pressure plate 3, as shown in FIG. Figure 1 , Figure 3 shown.

[0031] The bottom of the friction plate steel sheet assembly 2 is arranged on the pressure plate 3 in the clutch housing 1, as shown in FIG. Figure 2 The friction plate steel plate assembly 2 is composed of a friction plate and a steel plate, which is an existing structure and will not be described in detail here.

[0032] The outer side of the friction plate steel sheet assembly 2 is snap-connected to the clutch cover 1. For example, Figure 1 , Figure 2 As shown, a plurality of notches 11 are provided on the clutch cover 1. The friction plate in the friction plate steel plate assembly 2 is formed with a plurality of protrusions 21 radially outward. In the installed state, each protrusion 21 is engaged in a notch 11, so that the outer side of the friction plate steel plate assembly 2 is engaged and connected to the clutch cover 1.

[0033] Among them, Figure 2 , Figure 4 As shown, the upper end of the center sleeve 5 protrudes radially outward to form an annular protrusion 51, and a plurality of through holes 52 are provided at the bottom of the center sleeve 5. In the installed state, each connecting column 31 passes through a through hole 52, so that the bottom of the center sleeve 5 is arranged above the pressure plate 3, and the annular protrusion 51 is pressed against the top of the friction plate steel sheet assembly 2, as shown in FIG. Figure 2 shown.

[0034] The lifting plate 7 is connected to the top of a plurality of connecting columns 31. For example, Figure 3 As shown, the lifting plate 7 is connected to the top of a plurality of connecting columns 31 through a threaded connector 6. Preferably, the threaded connector 6 is a bolt or a screw.

[0035] The preload spring 4 is arranged between the bottom of the lifting plate 7 and the bottom of the center sleeve 5, thereby compressing the friction plate steel sheet assembly 2 between the pressure plate 3 and the annular protrusion 51. In this way, after the lifting plate 7 is fixedly connected to the pressure plate 3, it can rotate relative to the center sleeve under load. This relative rotation can be converted into a compression force on the preload spring through the spiral lifting structure, further increasing the compression of the friction plate and the steel sheet, and the friction force transmits the torque through the contact between the friction plate and the steel sheet. Preferably, the preload spring 4 is sleeved on the connecting column 31, such as Figure 1 , Figure 2 shown.

[0036] Among them, a spiral lifting structure is also provided between the lifting plate 7 and the center sleeve 5. For example, Figure 2 As shown, a plurality of first protrusions 53 are arranged axially upward in the center sleeve 5, and the top surface of the first protrusion 53 is a spiral curved surface. A plurality of second protrusions 71 are arranged axially downward at the bottom of the lifting plate 7, and the bottom surface of the second protrusion 71 is a spiral curved surface. In the installed state, the top surface of each first protrusion 53 can complement the bottom surface of a second protrusion 71 to form a spiral lifting structure similar to two threads in a connected state.

[0037] Through the careful design of the clutch center sleeve 5 and the pressure plate 3, relative torque is generated between the two during the clutch torque transmission process, and the magnitude of the relative torque changes with the instantaneous load of the clutch. Through the contact of two spiral curved surfaces in the spiral lifting structure set at the corresponding positions on the lifting plate 7 and the center sleeve 5, the generated relative torque is converted into a clamping force that changes with the instantaneous load of the clutch, and the friction plate and steel plate combination 2 are pressed together with the preload spring 4. When the clutch transmission torque increases, the clamping force is dynamically increased, thereby achieving an increase in the clutch capacity.

[0038] Furthermore, in some embodiments, a ball bearing is disposed between the top surface of the first protrusion 53 and the bottom surface of the corresponding second protrusion 71. By disposing a ball bearing between the top surface of the first protrusion 53 and the bottom surface of the corresponding second protrusion 71, the friction force can be further reduced.

[0039] Exemplarily, a first groove is provided on the top surface of the first protrusion 53. A second groove is provided on the bottom surface of the second protrusion 71. In the installed state, the first groove and the second groove form an installation groove. The ball is arranged in the installation groove.

[0040] The clutch release shaft 9 is connected to the lifting plate 7 via a release bearing 8 .

[0041] By adopting the above structure, when transmitting torque, the center sleeve 5 driven by the clutch outer cover 1 and the combination fixedly connected with the pressure plate 3 and the lifting plate 7 tend to rotate relative to each other. This relative rotation is converted into compression of the preload spring 4 through the contact of two spiral surfaces or ball contact, further increasing the capacity of the clutch to transmit torque.

[0042] Moreover, when transmitting the same magnitude of torque, a smaller spring preload can be used, thereby achieving flexible and light clutch release operation.

[0043] In addition, the clutch operating mechanism acts on the lifting plate 7 through the clutch release shaft 9 and the release bearing 8 in the torque adaptive wet multi-plate clutch of the embodiment of the present invention, so that the lifting plate 7 can move inward to achieve clutch separation.

[0044] Because the lifting plate 7 moves inwards, the force applied by the operating mechanism to the lifting plate 7 is unidirectionally inwards, so the lifting plate 7 separation device can be assembled from the outside, which means that when assembling the engine, the clutch core composed of the pressure plate 3, the friction plate steel plate assembly 2, the center sleeve 5, the preload spring 4 and the threaded connector 6 and the lifting plate 7 does not need to be disassembled, thereby increasing the assembly efficiency and making maintenance and replacement more convenient. In addition, because the clutch lifting plate 7 is operated to move inwards to achieve clutch separation, the clutch free travel will gradually increase with the wear of the friction plate during the life cycle of the clutch, avoiding the consequence of abnormal wear of the friction plate caused by insufficient spring preload due to insufficient clutch free travel and reduced clutch capacity.

[0045] The torque-adaptive wet multi-plate clutch of the embodiment of the present invention has a simple structure, is easy to install, works reliably, is low in cost, and is easy to repair and maintain. While ensuring that the clutch transmits torque, the preload of the clutch spring can be effectively reduced, thereby achieving the purpose of reducing the handle operating force value.

[0046] It should be noted that all features disclosed in this specification, or steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any manner.

[0047] In addition, the above specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also belong to the disclosure scope of the present invention and fall within the protection scope of the present invention. Those skilled in the art should understand that the present invention description and its drawings are illustrative and do not constitute a limitation of the claims. The protection scope of the present invention is defined by the claims and their equivalents.

Claims

1. A torque adaptive wet multi-plate clutch, characterized in that: It comprises a clutch outer cover (1), a friction plate steel sheet assembly (2), a pressure plate (3), a preload spring (4), a center sleeve (5), a lifting plate (7), a release bearing (8) and a clutch release shaft (9); The pressure plate (3) is arranged in the clutch housing (1); and a plurality of connecting columns (31) perpendicular to the pressure plate (3) are arranged on the pressure plate (3); The bottom of the friction plate steel sheet assembly (2) is arranged on the pressure plate (3) in the clutch outer cover (1); and the outer side of the friction plate steel sheet assembly (2) is snap-connected to the clutch outer cover (1); The upper end of the center sleeve (5) protrudes radially outward to form an annular protrusion (51), and a plurality of through holes (52) are arranged at the bottom of the center sleeve (5); in the installed state, each of the connecting columns (31) passes through one of the through holes (52), so that the bottom of the center sleeve (5) is arranged above the pressure plate (3), and the annular protrusion (51) is pressed against the top of the friction plate steel sheet assembly (2); The lifting plate (7) is connected to the tops of the plurality of connecting columns (31); the clutch release shaft (9) is connected to the lifting plate (7) via the release bearing (8); The pre-compression spring (4) is arranged between the bottom of the lifting plate (7) and the bottom of the center sleeve (5), so as to compress the friction plate steel sheet assembly (2) between the pressure plate (3) and the annular protrusion (51); Furthermore, a spiral lifting structure is provided between the lifting plate (7) and the central sleeve (5); A plurality of first protrusions (53) are arranged axially upward in the center sleeve (5), and the top surfaces of the first protrusions (53) are spiral curved surfaces; A plurality of second protrusions (71) are arranged axially downward at the bottom of the lifting plate (7), and the bottom surfaces of the second protrusions (71) are spiral curved surfaces; In the installed state, the top surface of each first protrusion (53) and the bottom surface of one second protrusion (71) can complement each other to form the spiral lifting structure; The pre-compression spring (4) is sleeved on the connecting column (31).

2. The torque adaptive wet multi-plate clutch according to claim 1, characterized in that: A ball bearing is also provided between the top surface of the first protrusion (53) and the bottom surface corresponding to the second protrusion (71).

3. The torque adaptive wet multi-plate clutch according to claim 2, characterized in that: A first groove is provided on the top surface of the first protrusion (53); and a second groove is provided on the bottom surface of the second protrusion (71); In the installed state, the first groove and the second groove form an installation groove; the ball is arranged in the installation groove.

4. The torque adaptive wet multi-plate clutch according to claim 1, characterized in that: A plurality of notches (11) are provided on the clutch outer cover (1); a plurality of protrusions (21) are formed radially outward on the friction plate in the friction plate steel plate assembly (2); In the installed state, each of the protrusions (21) is engaged in one of the notches (11), so that the outer side of the friction plate steel plate assembly (2) is engaged and connected to the clutch outer cover (1).

5. The torque adaptive wet multi-plate clutch according to claim 1, characterized in that: The lifting plate (7) is connected to the top of the plurality of connecting columns (31) via a threaded connector (6).

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