Clutch pressure plate

Abstract

The technical scheme belongs to the technical field of clutch accessories, and particularly relates to a clutch pressure plate which comprises a cast iron plate, a plurality of abutting parts are arranged on the surface of the cast iron plate in the circumferential direction, and notches are formed between the adjacent abutting parts. The diaphragm spring is arranged above the cast iron disc and movably abuts against the cast iron disc; the clutch cover is buckled on the diaphragm spring and the cast iron disc and is used for limiting the diaphragm spring on the cast iron disc; wherein the ratio of the length of the notch to the length of the abutting part ranges from 0.5 to 1, the ratio of the length of the notch to the length of the abutting part is 2: 3, the front end of the clutch cover extends inwards to form a wrapping part, and the edge of the diaphragm spring abuts against the wrapping part. And an O-shaped ring is arranged between the coating part and the diaphragm spring.

Description

TECHNICAL FIELD

[0001] The technical scheme relates to the clutch accessory field, in particular to a clutch pressure plate. BACKGROUND

[0002] The clutch is an important part in the automobile transmission system, wherein the diaphragm spring clutch has the advantages of light weight, small rotational inertia, no need to adjust the height of the separation finger, large compression force, strong torque transmission capacity, uniform compression force after complete engagement, no need to frequently adjust the separation gap and the like, and becomes the most commonly used variety in the clutch.

[0003] With the development of industry, the horsepower of the automobile is getting larger and larger, in order to achieve the function of safely transmitting the torque of the clutch, it is needed to improve the stress that the diaphragm spring can bear, the existing cast iron plate under the diaphragm spring is basically divided into several equal parts, and a large gap is left in the middle, and the diaphragm spring is just pressed on the cast iron plate as a whole, so that when the diaphragm spring is pulled up or falls back, because the cast iron plate that contacts the force has a gap, the diaphragm spring is unevenly stressed, thereby fatigue fracture is easily caused, and the gap of the cast iron plate also has the function of heat dissipation, so it cannot be completely closed, and therefore the length of the gap determines the service life of the clutch. SUMMARY

[0004] The technical scheme aims to provide a clutch pressure plate, in production, by controlling the length ratio of the gap and the abutting portion, the problem of small bearing capacity of the diaphragm spring is solved.

[0005] The technical scheme is achieved in the following manner:

[0006] A clutch pressure plate, comprising: a cast iron plate, a plurality of abutting portions are arranged on the surface of the cast iron plate in the circumferential direction, and a gap is formed between adjacent abutting portions; a diaphragm spring, arranged above the cast iron plate and abutting the cast iron plate; and a clutch cover, buckled on the diaphragm spring and the cast iron plate, used for limiting the diaphragm spring on the cast iron plate; wherein the length ratio of the gap and the abutting portion is between 0.5 and 1.

[0007] Preferably, the length ratio of the gap and the abutting portion is 2:3.

[0008] Preferably, the front end of the clutch cover extends inward to form a cladding portion, and the edge of the diaphragm spring abuts the cladding portion; an O-ring is arranged between the cladding portion and the diaphragm spring.

[0009] Preferably, the top surface of the abutting portion has an inclined surface, which is adapted to the deformation direction of the diaphragm spring under pressure.

[0010] Preferably, a plurality of spring windows are arranged on the surface of the diaphragm spring, and a spring sheet is formed between adjacent spring windows.

[0011] Preferably, the clutch cover has several mounting positions on its periphery, and a lift seat is provided on the periphery of the cast iron disc. The clutch cover is connected to the lift seat by a lift screw; the lift seat is placed in the mounting position.

[0012] Preferably, the lift seat is provided with a plurality of lift shims and a plurality of lift washers, and the lift shims and lift washers are all fitted over the lift screw.

[0013] Preferably, the other end of the lift shim is connected to the clutch cover by a fastening screw.

[0014] The key and beneficial technical effects of this technical solution compared to existing technologies are:

[0015] 1. The abutment part on the surface of the cast iron disc designed in this technical solution has a specific length, and the ratio of its length to the length of the notch is between 0.5 and 1. This design can ensure both high load-bearing capacity and good ventilation and heat dissipation.

[0016] 2. The cast iron disc designed in this technical solution is equipped with a lift seat on its periphery, which allows it to fit the overall structure, and the O-ring can play a role in buffering and shock absorption. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this technical solution.

[0018] Figure 2 This is an exploded view of the technical solution.

[0019] Figure 3 This is a cross-sectional view of part of this technical solution.

[0020] Figure 4 for Figure 1 Enlarged view of section X in the middle.

[0021] Figure 5 for Figure 2 Enlarged view of the Y-axis.

[0022] Reference numerals: 1. Cast iron disc; 2. Abutment part; 3. Notch; 4. Diaphragm spring; 5. Clutch cover; 6. Encasing part; 7. O-ring; 8. Inclined surface; 9. Spring window; 10. Spring plate; 11. Mounting position; 12. Lift seat; 13. Lift screw; 14. Lift washer; 15. Lift gasket; 16. Fastening screw. Detailed Implementation

[0023] The specific implementation of this technical solution will be further described in detail below with reference to the accompanying drawings.

[0024] like Figures 1-5As shown, a clutch pressure plate includes a cast iron plate 1, a diaphragm spring 4, and a clutch cover 5. The cast iron plate 1 is configured as a mounting base. Both the diaphragm spring 4 and the clutch cover 5 are disposed on the cast iron plate 1. The cast iron plate 1 is an annular base with a through hole in its middle. The through hole is used to avoid the deformable diaphragm spring 4. Several abutment portions 2 are arranged circumferentially on the outer edge of the surface of the cast iron plate 1. A notch 3 is formed between adjacent abutment portions 2. The diaphragm spring 4 is disposed above the cast iron plate 1 and movably abuts against the cast iron plate 1. When the diaphragm spring 4 is compressed and deformed, its middle portion moves closer to the cast iron plate 1, and the pressure between it and the abutment portion 2 increases. The clutch cover 5 is disposed on the cast iron plate 1 and fastened to the diaphragm spring 4. The clutch cover 5 is used to limit the diaphragm spring 4 on the cast iron plate 1.

[0025] Furthermore, to adapt to high-horsepower vehicles, the contact area between the diaphragm spring 4 and the cast iron disc 1 needs to be increased. In this application, the contact area between the diaphragm spring 4 and the cast iron disc 1 is increased in two ways. The first way is to increase the length of the abutment portion 2 and decrease the length of the notch 3. Since the abutment portions 2 are arranged circumferentially on the cast iron disc 1, the center of the circle they form coincides with the center of the cast iron disc 1. This "length" refers to the direction perpendicular to the radius of the circle. In this way, while ensuring the length of the notch 3, i.e., ensuring heat dissipation, the contact area of ​​the abutment portion 2 is increased. The first method distributes the pressure between the diaphragm spring 4 and the cast iron disc 1, improving the product's service life. The second method involves increasing the width of the contact surface on the abutment part 2. This "width" refers to the direction along the radius of the circle. Increasing the width of the top surface also increases the width of the contact surface. Furthermore, when the diaphragm spring 4 deforms, it adheres to the inclined surface 8 of the abutment part 2, expanding its contact area. The ratio of the length of the notch 3 to the length of the abutment part 2 is between 0.5 and 1, that is, the ratio of the lengths of L1 and L2 is between 0.5 and 1, with the optimal ratio being 2:3.

[0026] Furthermore, the front end of the clutch cover 5 extends inward to form a covering part 6, and the edge of the diaphragm spring 4 abuts against the covering part 6; an O-ring 7 is provided between the covering part 6 and the diaphragm spring 4, and a plurality of spring windows 9 are opened on the surface of the diaphragm spring 4, with spring pieces 10 formed between adjacent spring windows 9.

[0027] Furthermore, the clutch cover 5 has several mounting positions 11 around its periphery, and a lift seat 12 is provided around the cast iron disc 1. The clutch cover 5 is connected to the lift seat 12 by a lift screw 13. The lift seat 12 is placed in the mounting position 11, and several lift shims 14 and several lift washers 15 are provided on the lift seat 12. The lift shims 14 and lift washers 15 are both sleeved on the outside of the lift screw 13. The other end of the lift shim 14 is connected to the clutch cover 5 by a fastening screw 16.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this technical solution. Those skilled in the art should understand that this technical solution is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this technical solution. Various changes and modifications can be made to this technical solution without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed technical solution. The scope of protection of this technical solution is defined by the appended claims and their equivalents.

Claims

1. A clutch plate, characterized by, The application relates to a cast iron plate (1) which is provided with a plurality of abutting parts (2) arranged in a circumferential direction on the surface of the cast iron plate (1), and a gap (3) is formed between adjacent abutting parts (2); a diaphragm spring (4) is arranged above the cast iron plate (1) and abuts against the cast iron plate (1) in a movable manner; and a clutch cover (5) is buckled on the diaphragm spring (4) and the cast iron plate (1) and is used for limiting the diaphragm spring (4) on the cast iron plate (1); wherein the ratio of the length of the gap (3) to the length of the abutting part (2) is between 0.5 and 1. The ratio of the length of the gap (3) to the length of the abutting part (2) is 2:

3. The clutch cover (5) is provided with a cladding part (6) which is formed by extending the front end of the clutch cover (5) inwards, the edge of the diaphragm spring (4) abuts against the cladding part (6), and an O-shaped ring (7) is arranged between the cladding part (6) and the diaphragm spring (4). The top surface of the abutting part (2) is provided with an inclined surface (8) which is adapted to the deformation direction of the diaphragm spring (4) under pressure. The surface of the diaphragm spring (4) is provided with a plurality of spring windows (9), and a spring piece (10) is formed between adjacent spring windows (9).

2. A clutch plate as claimed in claim 1, wherein: The circumferential side of the clutch cover (5) is provided with a plurality of mounting positions (11), the circumferential side of the cast iron plate (1) is provided with a lift seat (12), and the clutch cover (5) is connected with the lift seat (12) through a lift screw (13).

3. A clutch plate as claimed in claim 1 or 2, wherein: The lift seat (12) is arranged in the mounting position (11).

4. A clutch disc as claimed in claim 3, wherein: The lift seat (12) is provided with a plurality of lift washers (14) and a plurality of lift gaskets (15), and the lift washers (14) and the lift gaskets (15) are arranged outside the lift screw (13).

5. A clutch plate as claimed in claim 4, wherein: The other end of the lift washer (14) is connected with the clutch cover (5) through a fastening screw (16).

6. A clutch plate as claimed in claim 5, wherein: ​ ​ 7. A clutch disc as claimed in claim 6, wherein: ​ 8. A clutch disc as claimed in claim 7, wherein: ​

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