Lapping edge type clutch structure for preventing diaphragm spring from rotating

Abstract

The utility model belongs to the field of key parts of automobiles, and discloses a landing edge type clutch structure for preventing a diaphragm spring from rotating, which comprises a pressure plate cover, a pressure plate body and the diaphragm spring, a plurality of transmission sheets are uniformly distributed on the circumference of the pressure plate body, and the diaphragm spring is arranged between the pressure plate cover and the pressure plate body. The pressure plate further comprises a supporting ring arranged between the diaphragm spring and the pressure plate body, the outer circumference of the supporting ring is elastically pressed on the pressure plate cover, the inner circumference of the supporting ring is elastically pressed on the diaphragm spring, the diaphragm spring and the pressure plate cover are always kept in a compressed state, and a plurality of centering pins are evenly distributed in the middle of the pressure plate cover and penetrate through the diaphragm spring. According to the landing edge type clutch structure capable of preventing the diaphragm spring from rotating, due to the fact that the landing edge supporting ring and the diaphragm spring are in the pre-pressing state all the time, clutch failure caused by loosening of the pressing plate cover and the diaphragm spring due to friction can be effectively prevented, pressing force damping of the diaphragm spring can be reduced, and the service life of the diaphragm spring is prolonged. The service life of the clutch is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of automobile key parts, especially relates to a kind of off edge type clutch structure of preventing diaphragm spring rotation. BACKGROUND

[0002] In the automobile drive train, clutch is mainly used to transmit and cut off the power generated by engine, maintain normal driving of vehicle;Whether the working performance of clutch is safe and stable directly influences the starting, braking, driving performance of whole vehicle in use process. With the continuous development of domestic and foreign automobile industry, automobile manufacturing technology is more mature, clutch is more compact and perfect in space and structure design, and the use requirement of clutch is higher and higher. Considering the frequent starting shift and long time overload operation of bus type, truck and other business vehicles, the gap between diaphragm and pressure disc cover of clutch due to wear appears loose, causes separation efficiency to reduce and causes unclear separation, abnormal sound, even failure, therefore a new device needs to be designed. UTILITY MODEL CONTENTS

[0003] The utility model is to provide a kind of off edge type clutch structure of preventing diaphragm spring rotation, to solve the problem raised in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A kind of off edge type clutch structure of preventing diaphragm spring rotation, including pressure disc cover, pressure disc body and diaphragm spring, the pressure disc body is evenly distributed with several transmission sheets in circumference, the first end of transmission sheet and the circumference of pressure disc body are fixedly connected by limiting nail, the second end of transmission sheet is connected with the circumference of pressure disc cover and pressure disc body by rivet, the pressure disc body and the rivet are slidingly connected, the diaphragm spring is arranged between the pressure disc cover and the pressure disc body, further including the supporting ring between the diaphragm spring and the pressure disc body, the outer circumference of supporting ring is elastically pressed on the pressure disc cover, the inner circumference of supporting ring is elastically pressed on the diaphragm spring, so that the diaphragm spring and the pressure disc cover always keep the state of compression, the pressure disc cover is evenly distributed with several centering pins in the middle, the centering pin passes through the diaphragm spring.

[0006] Further, the supporting ring adopts slotted disc spring structure, avoids and ensures that the outer circumference of diaphragm spring contacts with the pressure disc body.

[0007] Further, the supporting ring adopts 50CrV4 material, to ensure stable and reliable elastic pressure.

[0008] Further, the centering pin is provided with three, and riveted with the pressure disc cover, to ensure the centering and limiting of diaphragm spring.

[0009] Compared with the prior art, the beneficial effects are:

[0010] Through the structure that the edge supporting ring and the diaphragm spring are always in the pre-pressing state, not only the clutch failure caused by the looseness of the pressure disc cover and the diaphragm spring due to friction can be effectively prevented, but also the pressure damping of the diaphragm spring can be reduced, and the service life of the clutch is prolonged. A comfortable environment can be provided for the driver and passengers, and the safety, balance and comfort of the automobile are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structural schematic view of the edge supporting type clutch structure for preventing the diaphragm spring from rotating, which is described in the utility model;

[0012] Figure 2 is a front view of the edge supporting type clutch structure for preventing the diaphragm spring from rotating, which is described in the utility model;

[0013] Figure 3 is an A-A sectional view of the edge supporting type clutch structure for preventing the diaphragm spring from rotating, which is described in the utility model;

[0014] Figure 4 is a back view of the supporting ring of the edge supporting type clutch structure for preventing the diaphragm spring from rotating, which is described in the utility model;

[0015] Figure 5 is a back view of the supporting ring of the edge supporting type clutch structure for preventing the diaphragm spring from rotating, which is described in the utility model;

[0016] Figure 6 is a B-B sectional view of the supporting ring of the edge supporting type clutch structure for preventing the diaphragm spring from rotating, which is described in the utility model;

[0017] Figure 7 is a load characteristic diagram of the supporting ring of the edge supporting type clutch structure for preventing the diaphragm spring from rotating, which is described in the utility model.

[0018] In the figure, 1 is a pressure disc cover, 2 is a pressure disc body, 3 is a diaphragm spring, 4 is a supporting ring, 5 is a rivet, 6 is a transmission sheet, 7 is a centering pin, and 8 is a limiting pin. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0020] Please refer toFigures 1-6 A clamping edge type clutch structure for preventing the diaphragm spring 3 from rotating, comprising a pressure plate cover 1, a pressure plate body 2 and a diaphragm spring 3, the pressure plate body 2 is uniformly distributed with a plurality of transmission sheets 6 around the circumference, the first end of the transmission sheet 6 is fixedly connected with the pressure plate body 2 around the circumference through a limiting nail 8, the second end of the transmission sheet 6 is connected with the pressure plate cover 1 and the pressure plate body 2 around the circumference through a rivet 5, the pressure plate body 2 and the rivet 5 are slidingly connected, the diaphragm spring 3 is arranged between the pressure plate cover 1 and the pressure plate body 2, further comprising a supporting ring 4 arranged between the diaphragm spring 3 and the pressure plate body 2, the outer circumference of the supporting ring 4 is elastically pressed on the pressure plate cover 1, the inner circumference of the supporting ring 4 is elastically pressed on the diaphragm spring 3, so that the diaphragm spring 3 and the pressure plate cover 1 always maintain a pressed state, a plurality of centering pins 7 are uniformly distributed in the middle of the pressure plate cover 1, and the centering pins 7 pass through the diaphragm spring 3.

[0021] Further, the supporting ring 4 adopts a slotted disc spring structure to avoid ensuring that the outer circumference of the diaphragm spring 3 is in contact with the pressure plate body 2; the supporting ring 4 is made of 50CrV4 material to ensure stable and reliable elastic pressure; and the supporting ring 4 is processed by special processing technology through processes such as blanking, cold forming, hot forming, tempering and surface treatment. The supporting ring 4 is suitable for the case that the axial size is very compact and the radial size is large, can bear a very large range of axial load under a very small deformation condition, has the elastic characteristics of variable stiffness (nonlinear load deformation characteristics), and can obtain three different types of spring elastic characteristics by changing the ratio of the inner conical height (inner conical height H) to the plate thickness (plate thickness T) under the condition that the outer diameter R and the inner diameter r are the same, to meet different working needs (for example, the supporting ring 4 is suitable for the case that the axial size is very compact and the radial size is large, can bear a very large range of axial load under a very small deformation condition, has the elastic characteristics of variable stiffness (nonlinear load deformation characteristics), and can obtain three different types of spring elastic characteristics by changing the ratio of the inner conical height (inner conical height H) to the plate thickness (plate thickness T) under the condition that the outer diameter R and the inner diameter r are the same, to meet different working needs (for example, Figure 7 ) The supporting ring 4 is designed as H / T ≈ area, and the force value curve is stable when the supporting ring 4 is installed in the pressure plate cover 1 and is in a pre-pressed state, can automatically compensate the wear gap of the diaphragm spring 3, and keeps the diaphragm spring 3 and the pressure plate cover 1 always pressed; the three centering pins 7 are riveted with the pressure plate cover 1 together to ensure the centering and limiting of the diaphragm spring 3.

[0022] Working principle: in the separation state (power interruption), when the driver steps on the clutch pedal, the separation bearing pushes the center part of the diaphragm spring 3 away from the pressure plate cover 1, at the same time, the outer side of the supporting ring 4 is clamped on the pressure plate cover 1, and the inner side of the supporting ring 4 is pressed against the diaphragm spring 3, so that the supporting ring 4 always maintains a pressed state, and always maintains the pre-pressing of the diaphragm spring 3 and the pressure plate cover 1 under the restoring force of the supporting ring 4 in the process of separation and combination of the clutch, prevents the diaphragm spring 3 and the pressure plate cover 1 from having a gap, and makes the diaphragm spring 3 rotate; (power transmission) when the driver releases the clutch pedal, the separation bearing returns to the original position, the diaphragm spring 3 returns to the original position, the center part of the diaphragm spring 3 is close to the pressure plate cover 1, at the same time, the outer side of the supporting ring 4 is clamped on the pressure plate cover 1, the inner side of the supporting ring 4 is pressed against the diaphragm spring 3 to return to the pre-pressed state, and the outer circumference of the diaphragm spring 3 pushes the pressure plate body 2 away from the pressure plate cover 1.

[0023] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lap-type clutch structure for preventing diaphragm spring rotation, comprising a pressure plate cover (1), a pressure plate body (2), and a diaphragm spring (3), wherein a plurality of transmission plates (6) are evenly distributed around the circumference of the pressure plate body (2), the first end of the transmission plate (6) is fixedly connected to the circumference of the pressure plate body (2) by a limiting pin (8), the second end of the transmission plate (6) is connected to the circumference of the pressure plate cover (1) and the pressure plate body (2) by a rivet (5), the pressure plate body (2) and the rivet (5) are slidably connected, and the diaphragm spring (3) is disposed between the pressure plate cover (1) and the pressure plate body (2), characterized in that: It also includes a support ring (4) disposed between the diaphragm spring (3) and the pressure plate body (2). The outer circumference of the support ring (4) presses against the pressure plate cover (1), and the inner circumference of the support ring (4) presses against the diaphragm spring (3), so that the diaphragm spring (3) and the pressure plate cover (1) are always kept in a pressed state. Several central pins (7) are evenly distributed in the middle of the pressure plate cover (1), and the central pins (7) pass through the diaphragm spring (3).

2. The overlapping clutch structure for preventing diaphragm spring rotation according to claim 1, characterized in that: The support ring (4) adopts a slotted disc spring structure.

3. The overlapping clutch structure for preventing diaphragm spring rotation according to claim 2, characterized in that: The support ring (4) is made of 50CrV4 material.

4. The overlapping clutch structure for preventing diaphragm spring rotation according to claim 1, characterized in that: The centering pin (7) is provided in three parts and is riveted together with the pressure plate cover (1).

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