High-concentricity abrasion automatic compensation type clutch

Abstract

The utility model discloses a high-concentricity abrasion automatic compensation type clutch, which relates to the field of clutches and comprises a pressure plate, a pressure plate cover, a transmission sheet, a supporting ring, a diaphragm spring, a limiting nail, a supporting nail and a rivet. The supporting ring and the diaphragm spring are arranged between the pressure plate and the pressure plate cover; when the supporting ring is in a pre-tightening state, the supporting nail penetrates through the diaphragm spring hole and is riveted on the pressure plate cover and the supporting ring, and the supporting ring is in a constant stress state to extrude the diaphragm spring; the limiting nail is in clearance fit between diaphragm spring holes; and the transmission sheet is riveted on the outer edges of the pressure plate and the pressure plate cover through rivets. According to the utility model, the three limiting nails are additionally arranged to prevent the diaphragm spring from generating radial deviation in a high-speed rotating working state, and the supporting ring is additionally arranged to enable the diaphragm spring to be stressed constantly in the axial direction to automatically compensate a loose gap caused by abrasion between the diaphragm spring and the pressure plate cover and the like; and meanwhile, the limiting nails are uniformly distributed on the pressure plate cover, and the riveting holes are uniformly distributed in the supporting ring, so that high concentricity and longer service life of the clutch can be ensured.

Description

Technical Field

[0001] The utility model relates to the field of clutches, in particular to a high concentricity wear automatic compensation type clutch. Background Art

[0002] The clutch is a key component in the automotive transmission system, located between the engine and transmission. Its primary function is to smoothly engage and disengage the engine and transmission during starting, stopping, and shifting. With advancements in the automotive industry, continuous improvements in manufacturing technology, and consumers' pursuit of enhanced driving comfort, higher standards for clutch fatigue durability and moment of inertia have emerged. Currently, the market is prevalent in the use of support-pin riveted clutches. Under the high loads of frequent starting, stopping, and shifting, wear can occur between the clutch diaphragm spring and the pressure plate cover, as well as between the diaphragm spring and the hard-contact support ring. This reduces clutch engagement and disengagement efficiency, leading to abnormal clutch noise, unclear disengagement, and even clutch failure. Furthermore, without a diaphragm spring limiter, frequent engagement and disengagement can cause radial deflection of the diaphragm spring, increasing dynamic unbalance, shortening clutch life, and compromising driving comfort. Utility Model Content

[0003] This utility model aims to overcome the shortcomings of the prior art by providing a highly concentric clutch with automatic wear compensation. By increasing the clearance of the stop pin to fit within the diaphragm spring hole, the diaphragm spring is prevented from radially deflecting during operation, thereby improving the concentricity of the clutch components. A high elastic modulus, non-slit support ring is employed, which is in constant contact with one side of the diaphragm spring. The return spring force automatically compensates for axial deflection of the components during operation. This improves clutch precision and extends clutch life.

[0004] The purpose of the utility model is achieved through the following technical solutions: A high concentricity wear automatic compensation type clutch, comprising a pressure plate, a pressure plate cover, a transmission plate, a support ring, a diaphragm spring, a limit pin, a support pin and a rivet, wherein the support ring and the diaphragm spring are arranged between the pressure plate and the pressure plate cover, a fulcrum of the diaphragm spring is arranged on the support mountain of the pressure plate, and the other fulcrum of the diaphragm spring 4 is arranged between the pressure plate cover and the support ring; when the support ring is pre-tightened, the support pin passes through the diaphragm spring hole and is riveted to the pressure plate cover and the support ring, and the support ring is in a constant force state to squeeze the diaphragm spring; the limit pin is riveted to the pressure plate cover, and the limit pin clearance fits the diaphragm spring hole to prevent the diaphragm spring from radially deviating during operation; the transmission plate is riveted to the outer edge of the pressure plate and the pressure plate cover by rivets.

[0005] As a further technical solution, the limiting end of the limiting pin is a special-shaped structure, which is used to clearance-fit with the diaphragm spring hole, and the limiting end has a chamfered structure.

[0006] As a further technical solution, the support ring is a three-part disc spring structure without an opening, which contains three-part anti-error protrusions, a limit observation hole and a support ring riveting hole.

[0007] As a further technical solution, the support ring is made of a material with a high elastic modulus and is in constant contact with one side of the diaphragm spring, automatically compensating for the axial offset of each component with the return elastic force.

[0008] As a further technical solution, the limiting pins adopt a three-point evenly distributed positioning diaphragm spring, and the ratio of the number of limiting pins to the number of supporting pins is 1:3.

[0009] As a further technical solution, the anti-error protrusion of the support ring is divided into three equal parts and the centers of the position-limiting observation holes are aligned, and the riveting holes of the support ring are divided into three equal parts and the position-limiting observation holes are evenly distributed concentrically.

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

[0011] 1. The limit pin adopts three-point evenly distributed positioning of the diaphragm spring, which makes the assembly of the clutch components more efficient and reduces the scrap rate.

[0012] 2. The high-hardness limit end on the limit pin can ensure that the diaphragm spring and other components have a higher concentricity during the use of the clutch, increase the dynamic balance and life of the clutch, and improve the comfort of vehicle use.

[0013] 3. The support ring is a three-part disc spring structure with no opening, which has a strong nonlinear return elastic force. It is in constant contact with the side of the diaphragm spring and can automatically compensate for the axial offset of various components during operation, thereby preventing the clutch from failing due to axial wear.

[0014] 4. The support ring is provided with nine support pin rivet holes divided into three equal parts. This method can make the support ring and the pressure plate cover have a higher concentricity, ensure the stability of the lever ratio when designing the clutch, and the clamping force can be evenly distributed on the circumference, making the clutch performance more stable.

[0015] 5. The support ring replaces the conventional support ring structure, making the clutch axial size more compact and the application matching range more extensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the present utility model.

[0017] Figure 2 for Figure 1 PP cross-sectional view.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the limiting pin in the utility model.

[0019] Figure 4 This is a schematic diagram of the main structure of the support ring in the utility model.

[0020] Figure 5 for Figure 4 PP cross-sectional view.

[0021] Figure 6 It is a three-dimensional structural diagram of the riveting positions of the limit pin, support pin and diaphragm spring in the utility model.

[0022] Explanation of the accompanying drawings: pressure plate cover 1, pressure plate 2, limit pin 3, limit end 3-1, diaphragm spring 4, support pin 5, support ring 6, transmission plate 7, rivet 8, diaphragm spring hole 9, limit observation hole 10, anti-error protrusion 11, support ring rivet hole 12. DETAILED DESCRIPTION

[0023] 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 new embodiments.

[0024] Example: As shown in the attached Figures 1 to 6 As shown, this high concentricity wear automatic compensation type clutch includes a pressure plate 2, a pressure plate cover 1, a transmission plate 7, a support ring 6, a diaphragm spring 4, a limit pin 3, a support pin 5 and a rivet 8.

[0025] Reference Attachment Figure 2 、 6 The support ring 6 and diaphragm spring 4 are arranged between the pressure plate 2 and the pressure plate cover 1. One fulcrum of the diaphragm spring 4 is arranged on the support mountain of the pressure plate 2, and the other fulcrum of the diaphragm spring 4 is arranged between the pressure plate cover 1 and the support ring 6. When the support ring 6 is pre-tightened, the support pin 5 passes through the diaphragm spring hole 9 and is riveted to the pressure plate cover 1 and the support ring 6. The support ring 6 is in a constant force state and squeezes the diaphragm spring 4, which can automatically compensate for the axial wear clearance of the diaphragm spring and increase the service life of the clutch. The limit pin 3 is riveted to the pressure plate cover 1. The limit end 3-1 of the limit pin 3 is clear of the diaphragm spring hole 9, which can suppress the radial deviation of components such as the diaphragm spring, increase the concentricity of the clutch, and improve the comfort of the entire vehicle. The transmission plate 7 is riveted to the outer edge of the pressure plate 2 and the pressure plate cover 1 by rivets 8.

[0026] like Figure 3 The illustrated limit pin 3 is a special-shaped structure that matches the diaphragm spring hole 9. The material of the limit pin 3 is preferably SWRCH35K, and the limit end is high-frequency hardened to 400HV5-550HV5. Furthermore, the limit pin 3 uses three points to evenly position the diaphragm spring 4, and the ratio of the number of limit pins to the number of support pins is 1:3.

[0027] like Figure 4 、 5 The support ring 6 shown in 6 is a three-part disc spring structure without an opening, with an anti-error protrusion 11, a position-limiting observation hole 10 and a support ring riveting hole 12 divided into three parts. The support ring 6 is preferably made of a material with a high elastic modulus such as 50CrV4, and is formed by blanking by a punch press. It is often in contact with one side of the diaphragm spring 4 and automatically compensates for the axial offset of each component with the return elastic force. Preferably, the anti-error protrusion 11 of the support ring 6 and the position-limiting observation hole 10 are divided into three parts and the centers are aligned. Preferably, the rivet holes 12 of the support ring 6 are divided into concentric and evenly distributed position-limiting observation holes. Preferably, the support ring 6 is in a constant stress state under the riveting of the support pin 5 and the extrusion of the diaphragm spring 4, and can automatically compensate for the axial wear clearance of the diaphragm spring 4.

[0028] This new design prevents radial deflection of the diaphragm spring during high-speed rotation by adding three specially shaped stop pins with clearances that align with the diaphragm spring holes. The stop pins' stop ends are high-frequency hardened to 400HV5 to 550HV5, enhancing the product's durability and precision. By adding a support ring that divides the disc spring structure into three equal parts, the diaphragm spring maintains a constant axial load when installed, automatically compensating for loose clearance caused by wear between the diaphragm spring and the pressure plate cover. The stop pins are evenly distributed on the pressure plate cover, and the support ring has evenly spaced rivet holes, ensuring high clutch concentricity, a short axial dimension, and a longer service life.

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

Claims

1. A high concentricity wear automatic compensation clutch, characterized by: The invention comprises a pressure plate (2), a pressure plate cover (1), a transmission plate (7), a support ring (6), a diaphragm spring (4), a limit pin (3), a support pin (5) and a rivet (8), wherein the support ring (6) and the diaphragm spring (4) are arranged between the pressure plate (2) and the pressure plate cover (1), a fulcrum of the diaphragm spring (4) is arranged on the support mountain of the pressure plate (2), and another fulcrum of the diaphragm spring (4) is arranged between the pressure plate cover (1) and the support ring (6); In the state, the support pin (5) passes through the diaphragm spring hole (9) and is riveted to the pressure plate cover (1) and the support ring (6), and the support ring (6) is in a constant force state to squeeze the diaphragm spring (4); the limiting pin (3) is riveted to the pressure plate cover (1), and the limiting pin (3) is loosely matched with the diaphragm spring hole (9) to prevent the diaphragm spring (4) from radially deviating during operation; the transmission plate (7) is riveted to the outer edge of the pressure plate (2) and the pressure plate cover (1) through the rivet (8).

2. The high concentricity wear automatic compensation clutch according to claim 1, characterized in that: The limiting end (3-1) of the limiting pin (3) is a special-shaped structure, which is used for clearance matching with the diaphragm spring hole (9), and the limiting end (3-1) has a rounded corner structure.

3. The high concentricity wear automatic compensation clutch according to claim 2, characterized in that: The support ring (6) is a three-part disc spring structure without an opening, and is provided with three-part anti-error protrusions (11), a position-limiting observation hole (10) and a support ring riveting hole (12).

4. The high concentricity wear automatic compensation clutch according to claim 3, characterized in that: The support ring (6) is made of a material with a high elastic modulus and is in constant contact with one side of the diaphragm spring (4) to automatically compensate for the axial deviation of each component with a return elastic force.

5. The high concentricity wear automatic compensation clutch according to claim 4, characterized in that: The limiting pins (3) adopt a three-point evenly distributed positioning diaphragm spring (4), and the number ratio of the limiting pins (3) to the supporting pins (5) is 1:

3.

6. The high concentricity wear automatic compensation clutch according to claim 5, characterized in that: The anti-error protrusion (11) of the support ring (6) is divided into three equal parts and the center of the position-limiting observation hole (10) is aligned, and the support ring riveting hole (12) is divided into three equal parts and the position-limiting observation hole (10) is evenly distributed concentrically.

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