Clutch driven plate assembly

Abstract

The clutch driven plate assembly comprises a driven plate, a plurality of friction plates evenly fixed to the two sides of the driven plate, clamped between the driven plate and the friction plates and used for relieving contact impact, a reinforcing plate fixedly connected with the driven plate, and a damping module comprising an outer spring, an inner spring and a damping plate covering the outer side of the outer spring and the inner spring, the multiple outer springs and the multiple inner springs are evenly distributed on the reinforcing piece in a circumferential mode, the inner disc hub and the outer disc hub are arranged on the periphery of the inner disc hub in a sleeved mode through splines, angular displacement is arranged between the splines, the flanging structures prevent the inner springs and the outer springs from being disengaged and prevent the inner springs and the outer springs from moving smoothly, and the outer springs and the inner springs are matched with the disc spring damping piece. Vibration of different frequencies is effectively absorbed, initial torque impact is buffered by the pre-damping structure through a small spring, the load of a transmission system is reduced, certain angular displacement is allowed between the disc hub assembly and the reinforcing pieces, buffering is carried out, and torque transmission is smoother.

Description

Technical Field

[0001] This utility model relates to the field of automotive clutch technology, specifically to a clutch driven plate assembly. Background Technology

[0002] Traditional clutch driven plate assemblies are prone to component wear due to vibration when transmitting torque, and insufficient heat dissipation may cause the friction plates to overheat, affecting the clutch life. In existing technologies, the damping structure mostly uses a single spring, which has limited buffering effect and poor spring installation stability, making it easy to dislodge, jam, or break. The rigid connection between the disc hub assembly and the reinforcing plate aggravates vibration transmission, resulting in a reduction in the life of the clutch driven plate. Utility Model Content

[0003] To solve the above problems, this utility model provides a clutch driven plate assembly, including a driven plate, wherein the first side of the driven plate is the contact surface of the engine flywheel, and the second side of the driven plate is the mating surface of the clutch cover;

[0004] Friction pads, a plurality of the friction pads being uniformly fixed to the first side surface and the second side surface;

[0005] A wave-shaped sheet is sandwiched between the second side surface and the friction sheet to mitigate contact impact;

[0006] A reinforcing plate, fixedly connected to the driven plate by eight sets of radial rivets, is disposed on the second side.

[0007] The shock absorption module includes a coaxially nested outer spring, an inner spring, and a shock absorption disc covering its outer side. Several outer springs and inner springs are arranged evenly in a circle on the reinforcing plate.

[0008] The outer spring and the inner spring are installed with opposite spiral configurations.

[0009] The hub assembly includes an inner hub and an outer hub, wherein the outer hub is splined on the outer periphery of the inner hub, and the angular displacement between the splines is within ±3°.

[0010] A disc spring is mounted on a reinforcing plate, and a damping plate is installed between the disc spring and the shock-absorbing plate to form a multi-stage buffer.

[0011] The shock absorber disc is provided with evenly distributed mounting holes for mounting the outer spring and the inner spring. The outer side of the mounting holes is provided with a flange structure and a radius transition structure.

[0012] In one embodiment, the flange structure protrudes outward and is arranged in an elongated arc shape, and the R-angle transition structure is arranged at the connection between the flange structure and the outer wall of the mounting hole to protect the outer spring.

[0013] The inner wall of the flanged structure is polished to ensure that there is no jamming when the outer spring is compressed. The flanged structure prevents the outer and inner springs from coming out. The flanged structure is designed as a long arc-shaped protrusion, which can not only prevent the spring from coming out, but also reduce wear.

[0014] In one embodiment, the reinforcing plate is sleeved on the outer periphery of the outer hub in a spline manner, and the angular displacement between the splines is between ±10°.

[0015] In one embodiment, a pre-damping structure is fixed on the outer hub.

[0016] In one embodiment, the pre-damping structure includes a pre-damping plate fixed on the outer hub. The pre-damping plate is sleeved on the outer periphery of the inner hub in a spline manner, and the angular displacement between the splines is between ±3°. This angular displacement is the same as the angular displacement between the inner hub and the outer hub.

[0017] In one embodiment, a plurality of small springs evenly arranged in a circle are installed on the outer periphery of the pre-damping plate, and a spring pressure plate is sleeved on the outer periphery of the inner hub in a spline manner. The spring pressure plate presses on the pre-damping plate, and a plurality of abutment pieces are provided on the spring pressure plate, which can abut against both ends of the small springs.

[0018] By setting a pre-damping structure, the torque transmitted from the inner hub to the outer hub is buffered to a certain extent. The abutment plate adopts a wedge design with a contact surface inclination angle of 15° to ensure that the small spring is subjected to uniform force.

[0019] In one embodiment, a heat dissipation gap is provided between the friction plates on the same side.

[0020] The heat dissipation gap on the engine side can be larger than that on the clutch cover side, and copper mesh can be embedded in the friction plates to enhance heat dissipation, which is advantageous.

[0021] In one embodiment, a shock-absorbing disc fixed to the reinforcing sheet is provided on the first side.

[0022] Beneficial effects:

[0023] By using the reverse spiral layout of outer and inner springs in conjunction with disc spring damping plates, vibrations of different frequencies are effectively absorbed. The pre-damping structure buffers the initial torque impact through small springs, reducing the load on the transmission system. A certain angular displacement is allowed between the disc hub assembly and the reinforcing plate for buffering, reducing rigid impacts, and making torque transmission smoother.

[0024] The rounded protrusions of the flanged structure and the polished inner wall serve to both limit the spring movement, prevent the inner and outer springs from coming out, and ensure smooth movement.

[0025] Differentiated gaps in the friction plates and copper mesh design improve heat dissipation efficiency. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0027] Figure 1 This is a perspective view of the clutch cover mounting side of this application;

[0028] Figure 2 This is a perspective view of the side of the engine flywheel that is mounted on this application;

[0029] Figure 3 A three-dimensional schematic diagram of this application without the spring pressure plate;

[0030] Figure 4 This application presents a three-dimensional schematic diagram showing the mating of the inner and outer disc hubs;

[0031] Figure 5 A three-dimensional schematic diagram of the disc spring is shown for this application;

[0032] Figure 6 This is a side view of this application.

[0033] In the diagram: 100, driven plate; 101, friction plate; 102, damping disc; 103, wave plate; 104, inner spring; 105, reinforcing plate; 106, outer spring; 107, mounting hole; 108, damping plate; 109, disc spring; 110, pre-damping plate; 111, small spring; 112, inner hub; 113, outer hub; 114, abutment plate; 115, spring pressure plate; 200, flange structure. Detailed Implementation

[0034] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0036] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this utility model.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0039] This utility model provides a clutch driven plate assembly, including a driven plate 100, the first side of which is a contact surface with an engine flywheel, and the second side of which is a mating surface with a clutch cover; friction plates 101, a plurality of friction plates 101 being uniformly fixed to the first side and the second side; a wave plate 103, sandwiched between the second side and the friction plates 101, for mitigating contact impact; a reinforcing plate 105, fixedly connected to the driven plate 100 by eight sets of radial rivets, and disposed on the second side; and a shock absorption module, including a coaxially nested outer spring 106, an inner spring 104, and a cover. The outer shock absorber 102 has several outer springs 106 and inner springs 104, which are evenly distributed circumferentially on the reinforcing plate 105. The outer springs 106 and inner springs 104 are installed in opposite spiral configurations. The hub assembly includes an inner hub 112 and an outer hub 113. The outer hub 113 is splined onto the outer periphery of the inner hub 112, and the angular displacement between the splines is within ±3°. The disc spring 109 is disposed on the reinforcing plate 105, and the damping plate 108 is installed between the disc spring 109 and the shock absorber 102, pressing the disc spring 109 onto the reinforcing plate 105 to form a multi-stage buffer.

[0040] The shock absorber 102 is provided with evenly distributed mounting holes 107, which are used to install the outer spring 106 and the inner spring 104. The outer side of the mounting hole 107 is provided with a flange structure 200 and a radius transition structure.

[0041] In one embodiment, the flange structure 200 protrudes outward and is arranged in an elongated arc shape. The R-angle transition structure is arranged at the connection between the flange structure (200) and the outer wall of the mounting hole (107) to eliminate sharp edges. The flange structure 200 covers a part of the outer spring 106 to protect the outer spring 106 and prevent other components from jamming and cutting the outer spring 106.

[0042] The inner wall of the flange structure 200 is polished to ensure that there is no jamming when the outer spring is compressed. The flange structure prevents the outer spring 106 and the inner spring 104 from coming out. The flange structure is set as a long arc-shaped protrusion, which can not only prevent the spring from coming out, but also reduce wear. It can also distribute the pressure of the spring on the flange structure to a certain extent, reduce local stress concentration, and reduce the risk of damage to the flange structure.

[0043] In one embodiment, the reinforcing piece 105 is sleeved on the outer periphery of the outer hub 113 in a spline manner, and the angular displacement between the splines is between ±10°.

[0044] In one embodiment, a pre-damping structure is fixed on the outer hub 113.

[0045] In one embodiment, the pre-damping structure includes a pre-damping plate 110 fixed on the outer hub 113. The pre-damping plate 110 is sleeved on the outer periphery of the inner hub 112 in a spline manner, and the angular displacement between the splines is between ±3°. This angular displacement is the same as the angular displacement between the inner hub 112 and the outer hub 113.

[0046] In one embodiment, the pre-damping plate 110 has a plurality of circumferentially evenly arranged grooves on its outer periphery, and a plurality of circumferentially evenly arranged small springs 111 are installed in the grooves. In addition, some grease can be applied to the grooves to reduce the friction between the small springs and the grooves and improve the working efficiency of the pre-damping structure. The inner hub 112 has a spring pressure plate 115 sleeved on its outer periphery in a spline manner. The spring pressure plate 115 presses on the pre-damping plate 110, and the spring pressure plate 115 is provided with a plurality of abutment pieces 114, which can abut against the two ends of the small springs.

[0047] In another embodiment, a circularly distributed perforated hole is provided on the outer periphery of the pre-damping sheet 110, and two fulcrums for mounting the small spring 111 are provided at both ends of the perforated hole to limit the radial displacement of the small spring and improve the stability of the small spring.

[0048] By setting a pre-damping structure, the torque transmitted from the inner hub 112 to the outer hub 113 is buffered to a certain extent. The abutment plate 114 adopts a wedge design with a contact surface inclination angle of 15° to ensure that the small spring 111 is subjected to uniform force.

[0049] In one embodiment, a heat dissipation gap is provided between the friction plates 101 on the same side.

[0050] The heat dissipation gap on the engine side can be larger than that on the clutch cover side, and copper mesh can be embedded in the friction plates to enhance heat dissipation, which is advantageous.

[0051] In one embodiment, the shock-absorbing disc 102, which is fixed to the reinforcing plate 105, is provided on the first side.

[0052] During assembly, the outer spring 106 and inner spring 104 are nested in opposite directions into the mounting holes 107 of the damping disc 102. The flanged structure 200 restricts the radial displacement of the springs. The pre-damping plate 110 is connected to the inner disc hub 112 via a spline. The abutment piece 114 of the spring pressure plate 115 presses the two ends of the small spring 111, forming a pre-damping module. The reinforcing plate 105 is connected to the outer disc hub 113 via a spline, allowing ±3° angular displacement. When the clutch is running, the torque is transmitted to the outer disc hub 113 after being buffered by the pre-damping structure through the inner disc hub 112. The vibration is then absorbed by the multi-stage springs of the damping module, and finally the power is transmitted by the friction plate 101. The heat dissipation gap and copper mesh design accelerate heat dissipation and extend the service life of the components.

[0053] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0054] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A clutch driven plate assembly characterized by, The driven sheet (100) is provided with a first side surface which is a fitting surface for an engine flywheel and a second side surface which is a fitting surface for a clutch cover. A plurality of friction sheets (101) are fixed on the first side surface and the second side surface. A wave sheet (103) is arranged between the second side surface and the friction sheet (101). A reinforcing sheet (105) is fixedly connected with the driven sheet (100) and arranged on the second side surface. A damping module is provided with coaxially nested outer springs (106), inner springs (104) and a damping disc (102) covering the outer side of the outer springs (106). A disc hub assembly is provided with an inner disc hub (112) and an outer disc hub (113) which is in the form of a spline and arranged on the outer periphery of the inner disc hub (112). A disc spring (109) is arranged on the reinforcing sheet (105). A damping sheet (108) is arranged between the disc spring (109) and the damping disc (102). The damping disc (102) is provided with uniformly arranged mounting holes (107) for mounting the outer springs (106) and the inner springs (104), and the outer side of the mounting holes (107) is provided with a flange structure (200) and an R-angle transition structure.

2. A clutch driven plate assembly according to claim 1, wherein, The flange structure (200) is outwardly protruding and in the form of a long arc, and the R-angle transition structure is arranged at the connection between the flange structure (200) and the outer side wall of the mounting hole (107) and used for protecting the outer springs (106).

3. A clutch driven plate assembly according to claim 1, wherein, The reinforcing sheet (105) is in the form of a spline and arranged on the outer periphery of the outer disc hub (113), and the angular displacement between the splines is between ±10°.

4. A clutch driven plate assembly according to claim 1, wherein, The outer disc hub (113) is fixed with a pre-damping structure.

5. A clutch driven plate assembly according to claim 4, wherein, The pre-damping structure includes a pre-damping sheet (110) fixed on the outer disc hub (113), and the pre-damping sheet (110) is in the form of a spline and arranged on the outer periphery of the inner disc hub (112), and the angular displacement between the splines is between ±3°, which is the same as the angular displacement between the inner disc hub (112) and the outer disc hub (113).

6. A clutch driven plate assembly according to claim 5, wherein, The outer periphery of the pre-damping sheet (110) is provided with a plurality of circumferentially uniformly arranged small springs (111), and the outer periphery of the inner disc hub (112) is provided with a spring pressing plate (115) in the form of a spline, the spring pressing plate (115) is pressed on the pre-damping sheet (110), and the spring pressing plate (115) is provided with a plurality of abutting sheets (114) which can abut on both ends of the small spring.

7. A clutch driven plate assembly according to claim 1 wherein, The friction sheets (101) on the same side are provided with a heat dissipation gap.

8. A clutch driven plate assembly according to claim 1 wherein, The first side surface is provided with the damping disc (102) fixed with the reinforcing sheet (105).

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