A structure for improving axial force deformation of clutch plate sets
Patent Information
- Application Number
- CN202522661092.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-16
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-12-16
AI Technical Summary
[0004]针对背景技术中提到的问题，本实用新型的目的是提供一种改善离合器摩擦片组轴向受力变形的结构，以解决摩擦片组存在轴向受力变形的可能，从而导致以下的失效风险，传动效率降低，换挡品质恶化，受力不均造成换挡冲击或档位丢失，且会伴随异响和顿挫感；影响部件寿命，变形导致局部压力过大，造成高温烧蚀，会超出摩擦片组的耐热能力，影响寿命的问题
[0013]第一、在本实用新型中，通过在卡环主体外侧增设径向形状与调整钢片一致的台阶厚压板，其台阶结构精准避让卡环主体，既增大了摩擦片组受力接触面积，又提升了整体抗弯刚度，有效分散轴向载荷，避免摩擦片组因受力不均产生轴向变形，保障摩擦片主体与钢片主体的贴合度，显著提升扭矩传递效率，同时改善换挡时的受力稳定性，减少冲击、异响及档位丢失问题，优化换挡品质；
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Figure CN224886114U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive parts technology, and specifically relates to a structure for improving the axial deformation of clutch friction plate assembly. Background Technology
[0002] Clutch friction plate assemblies are core actuators in the power transmission systems of automobiles, construction machinery, and other vehicles. They consist of a driving plate that fits against the flywheel, a driven plate that connects to the output shaft, and a high-performance friction material layer attached to the surface of the plates. The reliable transmission and rapid disengagement of engine power are achieved through the pressing and separating of the driving and driven plates. Utilizing the high coefficient of friction, excellent thermal stability, and vibration damping structure design of the friction material, they buffer power impacts and reduce transmission noise. They are characterized by wear resistance, long service life, and adaptability to frequent clutch engagement and disengagement operations, making them a key component for ensuring smooth operation of the transmission system and improving the operational stability of equipment.
[0003] In the existing structure, the retaining ring is installed on the clutch housing, generally in contact with the splined part of the adjusting steel plate. The contact area is small, and its position is at the outer circumference of the entire friction plate assembly. During clutch engagement and disengagement, the limited contact area between the retaining ring and the adjusting steel plate, along with the retaining ring's off-center position, prevents it from providing sufficient axial movement guidance for the friction plate assembly. This can lead to axial deformation of the friction plate assembly, resulting in the following failure risks: reduced transmission efficiency (deformation reduces the contact area between the friction plate and the steel plate, decreasing torque transmission capacity); deteriorated shifting quality (uneven stress causes shifting shocks or gear loss, accompanied by abnormal noises and jerking); and reduced component lifespan (deformation leads to excessive local pressure, causing high-temperature ablation that exceeds the heat resistance of the friction plate assembly, affecting its lifespan). Utility Model Content
[0004] In response to the problems mentioned in the background art, the purpose of this utility model is to provide a structure that improves the axial deformation of the clutch friction plate assembly, so as to solve the problem that the friction plate assembly may have axial deformation, which may lead to the following failure risks: reduced transmission efficiency, deterioration of shift quality, uneven force causing shift shock or gear loss, and accompanied by abnormal noise and jerking; affecting the life of components, deformation leading to excessive local pressure, causing high temperature erosion, which may exceed the heat resistance of the friction plate assembly and affect its life.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0006] A structure for improving the axial deformation of a clutch friction plate assembly includes alternating layers of friction plate bodies and steel plate bodies. One end of the friction plate assembly, composed of the friction plate bodies and steel plate bodies, is provided with an adjusting steel plate. A retaining ring body is provided on the outer side of the adjusting steel plate, and a stepped thick pressure plate is provided on the outer side of the retaining ring body. The radial shape of the stepped thick pressure plate is consistent with the radial shape of the adjusting steel plate. The stepped structure of the stepped thick pressure plate is adapted to the shape of the retaining ring body to avoid it. A thick pressure plate retaining ring is provided on the outer side of the stepped thick pressure plate to fix its axial position. The core structure effectively disperses axial loads, avoids axial deformation, ensures the fit of the friction plates, and improves torque transmission efficiency by increasing the contact area of the friction plate assembly and improving its overall bending stiffness.
[0007] As a preferred technical solution, the adjustment steel sheet is configured with at least two different thickness specifications. The adjustment steel sheet is used in conjunction with the friction plate assembly. The multi-thickness adjustment steel sheet can accurately compensate for the axial clearance, ensure the fit of the friction plate assembly, avoid uneven force caused by improper clearance, and has strong adaptability.
[0008] As a preferred technical solution, the retaining ring body abuts between the adjusting steel plate and the stepped thick pressure plate. As an axial limiting component of the friction plate assembly, the retaining ring body achieves reliable axial limiting, restricts the displacement range of the friction plate assembly, provides a stable fulcrum for load transmission, and ensures the structural stability of the clutch engagement and disengagement process.
[0009] As a preferred technical solution, the stepped thick platen is made of metal material with excellent thermal conductivity and thermal stability. The total thickness of the stepped thick platen is 5mm to 7mm. The metal material stepped thick platen has both excellent thermal conductivity and thermal stability. The 5-7mm thickness design provides efficient heat dissipation, reduces the risk of high temperature ablation, and extends the service life of the components.
[0010] As a preferred technical solution, a buffer seat is fixedly connected to the inner wall of the stepped thick pressure plate. The buffer seat is arranged in a ring shape, and a bushing is fixedly connected to the inner wall of the buffer seat. Buffer components are symmetrically installed on one side of the buffer seat. The buffer seat and the bushing cooperate to provide stable axial guidance. The symmetrically installed buffer components can absorb instantaneous impact, reduce vibration transmission, and further optimize transmission smoothness.
[0011] As a preferred technical solution, the buffer assembly includes a mounting groove, a sliding rod, and a buffer spring. The mounting groove is symmetrically arranged in a circumferential array on one side of the buffer seat. The sliding rod is fixedly connected inside the mounting groove, and the buffer spring is fixedly sleeved on the outside of the sliding rod. The two ends of the buffer spring are fixedly connected to the inner wall of the mounting groove. The circumferential array buffer assembly effectively buffers vibration and impact through the elastic deformation of the spring. The structure is compact, which enhances the overall vibration reduction effect and improves the shifting quality and user experience.
[0012] In summary, the present invention has the following main advantages:
[0013] First, in this utility model, by adding a stepped thick pressure plate with a radial shape consistent with the adjusting steel plate on the outside of the retaining ring body, the stepped structure precisely avoids the retaining ring body, which not only increases the contact area of the friction plate assembly, but also improves the overall bending stiffness, effectively disperses the axial load, avoids axial deformation of the friction plate assembly due to uneven force, ensures the fit between the friction plate body and the steel plate body, significantly improves the torque transmission efficiency, and at the same time improves the force stability during gear shifting, reduces impact, abnormal noise and gear loss problems, and optimizes the shifting quality;
[0014] Secondly, in this utility model, the stepped thick pressure plate is made of a metal material with excellent thermal conductivity and thermal stability, and the thickness is controlled between 5mm and 7mm. It can quickly absorb the heat generated when the friction plate assembly is engaged, reduce the risk of local high temperature ablation, and, together with the buffer seat and the circumferential array of buffer components, absorb the instantaneous impact force during the transmission process through the elastic action of the buffer spring, reduce vibration transmission, further protect the friction plate assembly and related components, extend the overall service life, and the structural design is compatible with existing assembly processes, without the need for major changes to the overall layout of the clutch, making it highly practical. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0016] Figure 2 This is a three-dimensional structural diagram of the other side of this utility model;
[0017] Figure 3 This is a cross-sectional three-dimensional structural schematic diagram of the present invention;
[0018] Figure 4 This is the utility model Figure 3 Enlarged view of part A.
[0019] Reference numerals in the attached drawings: 1. Snap ring body; 2. Adjusting steel plate; 3. Friction plate body; 4. Steel plate body; 5. Thick pressure plate snap ring; 6. Stepped thick pressure plate; 7. Bushing; 8. Buffer seat; 9. Buffer assembly; 91. Mounting groove; 92. Slide rod; 93. Buffer spring. Detailed Implementation
[0020] Example
[0021] refer to Figures 1 to 4The structure for improving the axial deformation of a clutch friction plate assembly described in this embodiment includes alternatingly stacked friction plate bodies 3 and steel plate bodies 4. One end of the friction plate assembly, composed of the friction plate bodies 3 and steel plate bodies 4, is provided with an adjusting steel plate 2. A retaining ring body 1 is provided on the outer side of the adjusting steel plate 2. A stepped thickness pressure plate 6 is provided on the outer side of the retaining ring body 1. The radial shape of the stepped thickness pressure plate 6 is consistent with the radial shape of the adjusting steel plate 2. The stepped structure of the stepped thickness pressure plate 6 is adapted to the shape of the retaining ring body 1 to avoid it. A fixed step thickness is provided on the outer side of the stepped thickness pressure plate 6. The pressure plate 6 has a thick pressure plate retaining ring 5 in the axial position. The friction plate body 3 is made of copper-based powder metallurgy material, the steel plate body 4 is made of 45 steel stamping, the adjusting steel plate 2 is made of 65Mn spring steel, the stepped thick pressure plate 6 is made of aluminum alloy, and the thick pressure plate retaining ring 5 is made of carbon steel. The friction plate group is composed of alternatingly stacked friction plate bodies 3 and steel plate bodies 4. One end of the friction plate group is equipped with the adjusting steel plate 2. The outer side is provided with retaining ring body 1, stepped thick pressure plate 6 and thick pressure plate retaining ring 5 in sequence. The radial shape of the stepped thick pressure plate 6 is consistent with that of the adjusting steel plate 2. The stepped structure avoids the retaining ring body 1, realizing axial limit and structural adaptation.
[0022] refer to Figure 4 The adjusting steel plate 2 is configured with at least two different thickness specifications. The adjusting steel plate 2 is used in conjunction with the friction plate assembly. The adjusting steel plate 2 is configured with three thickness specifications: 0.5mm, 1.0mm, and 1.5mm. During assembly, the adjusting steel plate 2 of the corresponding thickness can be selected according to the actual axial clearance requirements of the friction plate assembly, so as to accurately compensate for the clearance, ensure the fit of the friction plate assembly when it is joined, and avoid uneven force caused by improper clearance.
[0023] refer to Figure 4 The retaining ring body 1 abuts between the adjusting steel plate 2 and the stepped thick pressure plate 6. The retaining ring body 1 serves as an axial limiting component for the friction plate assembly. The retaining ring body 1 is a ring structure with a rectangular cross-section. During the engagement and disengagement of the clutch, the retaining ring body 1 undertakes the axial limiting function of the friction plate assembly, restricting the axial displacement range of the friction plate assembly and providing a stable support base for subsequent load transmission.
[0024] refer to Figure 4 The stepped thick pressure plate 6 is made of a metal material with excellent thermal conductivity and thermal stability. The total thickness of the stepped thick pressure plate 6 is 5mm to 7mm. The stepped thick pressure plate 6 is made of a metal material with excellent thermal conductivity and thermal stability. The thickness is controlled between 5mm and 7mm. When bearing axial load, it can not only distribute the load by increasing the contact area and improve the bending stiffness of the friction plate group, but also quickly absorb friction heat and reduce the risk of local high temperature ablation.
[0025] refer to Figure 1A buffer seat 8 is fixedly connected to the inner wall of the stepped thick pressure plate 6. The buffer seat 8 is arranged in a ring shape. A bushing 7 is fixedly connected to the inner wall of the buffer seat 8. Buffer components 9 are symmetrically installed on one side of the buffer seat 8. The annular buffer seat 8 made of cast aluminum is fixedly connected to the inner wall of the stepped thick pressure plate 6 by welding. A bushing 7 made of nylon PA66 is fixedly connected to the inner wall of the buffer seat 8 by interference fit. The annular buffer seat 8 is fixed to the inner wall of the stepped thick pressure plate 6. The bushing 7 is provided on the inner wall of the buffer seat 8. Buffer components 9 are symmetrically installed on one side of it. This structural design can guide the axial movement of the friction plate assembly by means of the cooperation between the buffer seat 8 and the bushing 7, and at the same time buffer the instantaneous impact force by the buffer components 9.
[0026] refer to Figure 1 The buffer assembly 9 includes a mounting groove 91, a sliding rod 92, and a buffer spring 93. The mounting groove 91 is symmetrically arranged in a circumferential array on one side of the buffer seat 8. The sliding rod 92 is fixedly connected inside the mounting groove 91, and the buffer spring 93 is fixedly sleeved on the outside of the sliding rod 92. The two ends of the buffer spring 93 are fixedly connected to the inner wall of the mounting groove 91, respectively. The buffer spring 93 is made of stainless steel spring wire. The buffer assembly 9 consists of the mounting groove 91, the sliding rod 92, and the buffer spring 93. The mounting groove 91 is arranged in a circumferential array on one side of the buffer seat 8. The sliding rod 92 is fixed inside the mounting groove 91. The buffer spring 93 is sleeved on the outside of the sliding rod 92 and fixed at both ends. During the transmission process, the spring can absorb vibration and impact through elastic deformation.
[0027] Operating principle and advantages: During the clutch engagement stage, the hydraulic piston applies axial clamping force, which is sequentially transmitted to the friction plate group composed of alternatingly stacked friction plate body 3 and steel plate body 4, the adjusting steel plate 2, and the retaining ring body 1. The load is then distributed by the stepped thick pressure plate 6, which has the same radial shape as the adjusting steel plate 2 and a stepped structure to avoid the retaining ring body 1. The thick pressure plate retaining ring 5 axially fixes the stepped thick pressure plate 6. During assembly, the adjusting steel plate 2 with the corresponding thickness can be selected according to the axial clearance requirements of the friction plate group. The retaining ring body 1 plays an axial limiting role between the adjusting steel plate 2 and the stepped thick pressure plate 6. The metal stepped thick pressure plate 6 with a thickness of 5mm to 7mm not only improves the overall bending stiffness of the friction plate group and avoids axial deformation, but also quickly absorbs frictional heat to reduce the risk of ablation. At the same time, the annular buffer seat 8 on the inner wall of the stepped thick pressure plate 6 guides the axial movement of the friction plate group through the bushing 7. The buffer assembly 9 on one side of the buffer seat 8 absorbs the instantaneous impact force and vibration during the transmission process by means of the elastic deformation of the buffer spring 93 on the outside of the slide rod 92.
[0028] This invention effectively improves the problem of axial deformation of clutch friction plate assembly, significantly enhances torque transmission efficiency and shifting smoothness, reduces impact, abnormal noise and gear loss, while reducing the risk of local high temperature erosion, mitigating the impact of transmission vibration on components, extending the overall service life, and is compatible with existing assembly processes, making it highly practical and adaptable.
Claims
1. A structure for improving the axial deformation of a clutch friction plate assembly, comprising alternatingly stacked friction plate bodies (3) and steel plate bodies (4), characterized in that: One end of the friction plate assembly consisting of the friction plate body (3) and the steel plate body (4) is provided with an adjusting steel plate (2). A retaining ring body (1) is provided on the outside of the adjusting steel plate (2). A stepped thick pressure plate (6) is provided on the outside of the retaining ring body (1). The radial shape of the stepped thick pressure plate (6) is consistent with the radial shape of the adjusting steel plate (2). The stepped structure of the stepped thick pressure plate (6) is adapted to the shape of the retaining ring body (1) to avoid the retaining ring body (1). A thick pressure plate retaining ring (5) for fixing the axial position of the stepped thick pressure plate (6) is provided on the outside of the stepped thick pressure plate (6).
2. The structure for improving the axial deformation of a clutch friction plate assembly according to claim 1, characterized in that: The adjusting steel plate (2) is configured with at least two different thickness specifications, and the adjusting steel plate (2) is used in conjunction with the friction plate assembly.
3. The structure for improving the axial deformation of a clutch friction plate assembly according to claim 1, characterized in that: The retaining ring body (1) abuts between the adjusting steel plate (2) and the stepped thick pressure plate (6), and the retaining ring body (1) serves as an axial limiting component of the friction plate assembly.
4. The structure for improving the axial deformation of a clutch friction plate assembly according to claim 1, characterized in that: The stepped thick platen (6) is made of a metal material with excellent thermal conductivity and thermal stability, and the total thickness of the stepped thick platen (6) is 5mm to 7mm.
5. The structure for improving the axial deformation of a clutch friction plate assembly according to claim 1, characterized in that: The inner wall of the stepped thick pressure plate (6) is fixedly connected to a buffer seat (8), the buffer seat (8) is arranged in a ring, the inner wall of the buffer seat (8) is fixedly connected to a bushing (7), and a buffer assembly (9) is symmetrically installed on one side of the buffer seat (8).
6. The structure for improving the axial deformation of a clutch friction plate assembly according to claim 5, characterized in that: The buffer assembly (9) includes a mounting groove (91), a slide rod (92), and a buffer spring (93). The mounting groove (91) is symmetrically arranged in a circumferential array on one side of the buffer seat (8). The slide rod (92) is fixedly connected inside the mounting groove (91). The buffer spring (93) is fixedly sleeved on the outside of the slide rod (92). The two ends of the buffer spring (93) are fixedly connected to the inner wall of the mounting groove (91).