Clutch with compensation function and long service life

Abstract

The utility model discloses a long-service-life clutch with a compensation function. The long-service-life clutch comprises a pressure plate cover, a pressure plate, a diaphragm spring, a supporting nail, a supporting ring, a wave-shaped ring and a transmission piece. A pressure plate cover is arranged above the pressure plate; and the diaphragm spring is arranged between the pressure plate and the pressure plate cover. The supporting rings are fixed to the two sides of the diaphragm spring through supporting nails, and the supporting nails are fixed to the pressure plate cover. And the wave-shaped ring is positioned between the pressure plate and the diaphragm spring and is in transition fit between the pressure plate grooves. The ratio of the distance from the contact point of the clutch release bearing and the diaphragm spring to the contact point of the support ring and the diaphragm spring to the distance from the contact point of the upper support ring and the diaphragm spring to the contact point of the diaphragm spring and the pressure plate is called a lever ratio. According to the utility model, the wave-shaped ring is additionally arranged, so that the wear resistance of a supporting point between the pressure plate and the diaphragm spring is improved, the wave-shaped ring can compensate the wear clearance between parts, and the lever ratio in the clutch structure is stabilized. Due to the fact that the wave-shaped ring is in a constant stress deformation state, the problems of shaking and abnormal sound during starting of the vehicle are solved to a certain extent.

Description

Technical Field

[0001] The utility model relates to the field of clutches, in particular to a long-life clutch with a compensation function. Background Art

[0002] The automobile clutch is an important technical device, which is used to separate or connect the engine and the gearbox when the vehicle is shifting gears or stopping, effectively controlling the power output of the engine.

[0003] The existing clutches are mainly divided into diaphragm clutches and spiral clutches. The traditional diaphragm clutch is widely used, has a relatively simple structure, a large production volume, and a short life. Its structure includes a pressure plate cover, a pressure plate, a diaphragm spring, a support pin, a support ring, and a transmission plate, which are fastened and riveted. This traditional clutch has a simple structure, many application scenarios, and a large volume, so controlling production costs is a major problem. Since the clutch is constantly separated and combined during operation, the diaphragm spring and the pressure plate support mountain are prone to wear due to constant contact, which causes the contact point between the two to change, affecting the lever ratio of the clutch and causing a large change in the clutch clamping force and separation force. At the same time, due to the separation and connection of the torque transmitted between the clutch pressure plate and the friction plate, the contact surface of the pressure plate is constantly worn, and the pressure plate clamping force fluctuates greatly, which is prone to shaking and abnormal noise at the start, greatly affecting the service life of the clutch. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a long-life clutch with a compensation function. By adding a corrugated ring and removing the pressure plate support mountain, the corrugated ring is used to replace the pressure plate support mountain, thereby reducing the wear of the diaphragm spring fulcrum and automatically compensating for the wear gap between components, thereby extending the service life of the clutch. At the same time, the load characteristic curve after fatigue wear of the clutch is made similar to the original state, without jumping or wave peak flat line transition phenomenon, thereby stabilizing the clutch lever ratio, making the clamping force stable, and the vehicle does not experience shaking and abnormal noise when starting.

[0005] The purpose of the utility model is achieved through the following technical solutions: A long-life clutch with compensation function, comprising a pressure plate cover, a pressure plate, a diaphragm spring, a support pin, a support ring, a corrugated ring and a transmission plate, wherein a pressure plate cover is arranged above the pressure plate, and the diaphragm spring is arranged between the pressure plate and the pressure plate cover; the support ring is fixed to both sides of the diaphragm spring by support pins to act as a fulcrum, and the support pins are fixed to the pressure plate cover by a riveting process; the corrugated ring is located between the pressure plate and the diaphragm spring, transitionally fitted between the pressure plate grooves, and often in contact with the diaphragm spring.

[0006] As a further technical solution, the waveform ring is circular when viewed from the front and has a formed height when viewed from above, and is in a constant force state when working; there is a semicircular pressure plate groove on the pressure plate support mountain, and the waveform ring can transitionally fit between the pressure plate grooves, and there is a semicircular notch at the pressure plate support mountain for positioning and supporting the waveform ring.

[0007] As a further technical solution, the wave ring is transitionally fitted between the pressure plate grooves under the constant extrusion force of the diaphragm spring and the constant pulling force of the transmission plate on the pressure plate. The contact point between the wave ring and the diaphragm spring is a fulcrum of the clutch lever ratio.

[0008] As a further technical solution, the diaphragm spring is supported on the wave ring, and the wave ring is embedded in the pressure plate groove due to force; the diaphragm spring is located between the two supporting rings, and the contact point between the supporting ring and the diaphragm spring is another fulcrum of the clutch lever ratio.

[0009] As a further technical solution, it also includes a plurality of transmission plates, one end of each transmission plate is riveted to the riveting hole of the pressure plate cover, and the other end is riveted to the ear of the pressure plate.

[0010] The beneficial effects of the utility model are:

[0011] 1. The contact between the pressure plate support and the diaphragm spring is replaced by the contact between the wave ring and the diaphragm spring, which enhances the wear resistance of both. At the same time, the wave ring is always in a constant force compression state, which can automatically compensate for the wear gap between the diaphragm spring and the wave ring, stabilize the lever ratio of the clutch, and the load characteristic curve of the clutch does not show jumping or wave peak flat line transition phenomenon, making the clutch clamping force more stable, and no shaking or abnormal noise occurs when starting.

[0012] 2. The wave ring parts have a forming height. When the clutch assembly is in use, the wave ring is always in a constant force compression state, and has a certain elastic force on the pressure plate, making the clutch smoother when separating and engaging, and the service life longer.

[0013] 3. The conventional clutch pressure plate support mountain surface is a finely machined surface, with many processes and high precision requirements. After the change, the pressure plate support mountain surface does not need to be processed and can be directly cast, which greatly reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0015] Figure 2 Figure 1 PP cross-sectional view.

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the middle pressure plate of the utility model.

[0017] Figure 4It is a structural schematic diagram of the corrugated ring in the utility model.

[0018] Figure 5 Schematic diagram for calculating the clutch lever ratio.

[0019] Figure 6 This is a load characteristic curve diagram of some traditional clutches after wear.

[0020] Figure 7 This is the load characteristic curve diagram after wear of the utility model.

[0021] Explanation of the reference numerals in the accompanying drawings: pressure plate cover 1, pressure plate 3, diaphragm spring 2, supporting pin 5, supporting ring 6, corrugated ring 7, transmission plate 4, pressure plate groove 8, pressure plate cover rivet hole 9, pressure plate ear 10. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0023] Example: As shown in the attached Figures 1 to 4 As shown, a long-life clutch with compensation function includes a pressure plate cover 1, a pressure plate 3, a diaphragm spring 2, a supporting pin 5, a supporting ring 6, a corrugated ring 7, a transmission plate 4, a pressure plate groove 8, a pressure plate cover rivet hole 9, and a pressure plate ear 10.

[0024] Reference Figure 1 , 2 A pressure plate cover 1 is provided above the pressure plate 3, and the pressure plate cover 1 and the pressure plate 3 are riveted together through three transmission plates 4 (one end of each transmission plate 4 is riveted to the rivet hole 9 of the pressure plate cover, and the other end of each transmission plate 4 is riveted to the pressure plate ear 10).

[0025] A support ring 6 is provided on the left and right sides of the diaphragm spring 2, so that one of the support rings 6 is pressed between the support pin 5 and the diaphragm spring 2, and the other support ring 6 is pressed between the diaphragm spring 2 and the pressure plate cover 1. The support pin 5 fixes the diaphragm spring 2 and the support ring 6 to the pressure plate cover 1. The corrugated ring 7 is located between the pressure plate 3 and the diaphragm spring 2, and is transitionally matched between the pressure plate groove 8. Since the pressure plate cover 1 and the pressure plate 3 are connected by the transmission sheet 4 and the diaphragm spring 2 is in a compressed state, the corrugated ring 7 is in a constant force deformation state.

[0026] During assembly, first place the supporting pin 5, supporting ring 6, diaphragm spring 2, supporting ring 6, and pressure plate cover 1 in sequence for riveting assembly of component A; then, rivet holes of four groups of transmission plates 4 (three transmission plates 4 in each group) are riveted with riveting holes 9 of pressure plate cover of component A to form component B; finally, place the corrugated ring 7 between the pressure plate grooves 8, and place component B on the corrugated ring 7, align the other riveting hole of the transmission plate 4 with the riveting hole 9 of the pressure plate cover, then pre-tighten to reduce the forming height of the corrugated ring 7, and then rivet the transmission plate 4 and the pressure plate 3 to form a clutch cover assembly.

[0027] Working principle of the utility model: When the clutch is normally worn during use, the contact surface between the wave ring 7 and the diaphragm spring 2 is worn. Since the wave ring 7 is made of 70# steel with a relatively high hardness, the gap caused by the wear between the two is much smaller than the gap between the traditional clutch pressure plate 3 and the diaphragm spring 2, and the clutch lever ratio is more stable. In addition, the wave ring 7 has a forming height and is always in a constant force compression state during operation. The rebound compensation force generated can automatically compensate for the gap between parts, ensuring that the load characteristic curve of the clutch does not show any jumping or wave peak flat line transition phenomenon, making the clutch's clamping force more stable, without shaking or abnormal noise when starting, and extending the clutch life. Figure 6 , 7 As shown, by comparing the traditional clutch with the long-life clutch with compensation function provided by the utility model, it can be seen that the load characteristic curve of the utility model has a smooth transition after wear, without jumping or peak-to-flat line transition, so that the clutch is smoother when separating and engaging, and no shaking or abnormal noise occurs when starting.

[0028] The distance between the contact point between the clutch release bearing and the diaphragm spring and the contact point between the support ring and the diaphragm spring is called the leverage ratio compared to the distance between the contact point between the support ring and the diaphragm spring and the contact point between the diaphragm spring and the pressure plate. The utility model increases the wear resistance of the support point between the pressure plate and the diaphragm spring by adding a corrugated ring and removing the support mountain of the pressure plate. At the same time, the corrugated ring can compensate for the wear clearance between the components, stabilize the leverage ratio in the clutch structure, and extend the service life of the clutch. Since the corrugated ring is in a constant stress deformation state, the problem of vehicle shaking and abnormal noise when starting can be solved to a certain extent.

[0029] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.

Claims

1. A long-life clutch with compensation function, characterized in that: The invention comprises a pressure plate cover (1), a pressure plate (3), a diaphragm spring (2), a supporting pin (5), a supporting ring (6), a corrugated ring (7) and a transmission plate (4); a pressure plate cover (1) is provided above the pressure plate (3), and the diaphragm spring (2) is arranged between the pressure plate (3) and the pressure plate cover (1); the supporting ring (6) is fixed to both sides of the diaphragm spring (2) by supporting pins (5) to act as a fulcrum, and the supporting pins (5) are fixed to the pressure plate cover (1) by a riveting process; the corrugated ring (7) is located between the pressure plate (3) and the diaphragm spring (2), transitionally fitted between the pressure plate groove (8), and often in contact with the diaphragm spring (2).

2. The long-life clutch with compensation function according to claim 1, characterized in that: The corrugated ring (7) is in a circular shape when viewed from the front and has a formed height when viewed from the top, and is in a constant stress state when working; the support mountain of the pressure plate (3) is provided with a semicircular pressure plate groove (8), and the corrugated ring (7) can be transitionally matched between the pressure plate grooves (8).

3. The long-life clutch with compensation function according to claim 1 or 2, characterized in that: The wave ring (7) is transitionally matched between the pressure plate groove (8) under the constant extrusion force of the diaphragm spring (2) and the constant pulling force of the transmission plate (4) on the pressure plate (3), and the contact point between the wave ring (7) and the diaphragm spring (2) is a fulcrum of the clutch lever ratio.

4. The long-life clutch with compensation function according to claim 1, characterized in that: The diaphragm spring (2) is supported on a wave ring (7), and the wave ring (7) is embedded in the pressure plate groove (8) due to force; the diaphragm spring (2) is located between two supporting rings (6), and the contact point between the supporting ring (6) and the diaphragm spring (2) is another fulcrum of the clutch lever ratio.

5. The long-life clutch with compensation function according to claim 1, characterized in that: It also comprises a plurality of transmission plates (4), one end of each transmission plate (4) is riveted to the riveting hole (9) of the pressure plate cover, and the other end is riveted to the ear (10) of the pressure plate.

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