Piston structure of assembled vehicle clutch

Abstract

The utility model discloses a piston structure of an assembly type vehicle clutch, the piston structure of the assembly type vehicle clutch comprises a cylinder body, a metal framework base body and a rubber sealing piece, the cylinder body is provided with an inner cavity; one end of the metal framework substrate is arranged in the inner cavity, and the other end is connected with a friction plate; the rubber sealing piece is arranged between the metal framework base body and the inner cavity, the rubber sealing piece and the wall face of the inner cavity are in over-hard fit to guarantee the sealing performance of the cylinder body, the rubber sealing piece comprises a rubber sealing layer and a supporting frame, the supporting frame is arranged in the middle of the rubber sealing layer and extends towards the two sides, and the supporting frame abuts against the outer wall of the metal framework base body; the rubber sealing layer is fixed to the metal framework base body in a vulcanization mode. According to the piston structure of the assembled vehicle clutch, the rubber sealing layer and the metal framework base body are in close contact, the heat conduction performance is good, the vulcanization reaction uniformity between the rubber sealing layer and the metal framework base body can be improved, and therefore the vulcanization time can be effectively shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clutch manufacturing, in particular to a piston structure of an assembled vehicle clutch. Background Art

[0002] Generally, the piston structure of an assembled vehicle clutch is composed of a metal frame and a rubber sleeve formed by vulcanization, and the rubber sleeve is bonded to the metal frame by vulcanization. In the related art, the design specifications of the metal frame of the outer clutch piston of some dual-clutch transmissions are relatively large, so a larger rubber sleeve is required to match it during production. However, due to the limitation of the vulcanizing hot plate area and the number of vulcanizing chambers of the vulcanizer, vulcanization on a larger metal frame is more difficult. In addition, since the contact between the larger rubber sleeve and the metal frame is not tight enough and there is a gap, it is easy to affect the uniformity of the vulcanization reaction, resulting in low vulcanization efficiency and affecting production capacity. Therefore, it is necessary to propose a new piston structure of an assembled vehicle clutch. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a piston structure of an assembled vehicle clutch, wherein the rubber sealing layer of the piston structure of the assembled vehicle clutch has close contact with a metal skeleton substrate and good thermal conductivity, and can improve the uniformity of the vulcanization reaction between the rubber sealing layer and the metal skeleton substrate, thereby effectively reducing the vulcanization time and improving production efficiency.

[0004] The piston structure of the assembled vehicle clutch provided by the embodiment of the utility model comprises:

[0005] A cylinder body having an inner cavity;

[0006] A metal skeleton substrate, one end of which is disposed in the inner cavity and the other end of which is connected to a friction plate;

[0007] A rubber seal is arranged between the metal skeleton substrate and the inner cavity. The rubber seal includes a rubber sealing layer and a support frame. The support frame is arranged in the middle of the rubber sealing layer and extends toward both sides. The rubber sealing layer is fixed to the metal skeleton substrate by vulcanization, and the support frame abuts against the metal skeleton substrate.

[0008] The piston structure of the assembled vehicle clutch provided by the embodiment of the utility model has at least the following beneficial effects: by arranging a support frame in the rubber seal, the support frame lifts up the middle part of the rubber sealing layer, and the two ends of the rubber sealing ring are affected by the elastic tension to fit more closely to the surface of the metal skeleton substrate, which can reduce the gap between the rubber sealing layer and the metal skeleton substrate, and make the contact between the rubber sealing layer and the metal skeleton substrate closer, which is beneficial to improving the contact between the rubber sealing layer and the metal skeleton substrate, and improving the thermal conductivity between the rubber sealing layer and the metal skeleton substrate. During the vulcanization process, the close contact between the rubber sealing layer and the metal skeleton substrate and the good thermal conductivity can improve the uniformity of the vulcanization reaction between the rubber sealing layer and the metal skeleton substrate, thereby effectively reducing the vulcanization time and improving production efficiency.

[0009] According to the piston structure of the assembled vehicle clutch provided by the embodiment of the utility model, a mounting cavity is provided in the rubber sealing layer, and the support frame is mounted in the mounting cavity.

[0010] According to the piston structure of the assembled vehicle clutch provided by the embodiment of the utility model, the support frame is made of heat-conducting material.

[0011] According to the piston structure of the assembled vehicle clutch provided by the embodiment of the utility model, the metal skeleton substrate is provided at one end of the inner cavity and has a bending portion, and at least part of the outer wall of the support frame is in contact with the bending portion.

[0012] According to the piston structure of the assembled vehicle clutch provided by the embodiment of the utility model, the support frame is made of metal material.

[0013] According to the piston structure of the assembled vehicle clutch provided by an embodiment of the utility model, a first sealing lip and a second sealing lip are arranged on the outer side of the rubber sealing layer, the second sealing lip is arranged at the end of the first sealing lip, the first sealing lip extends in a direction toward the wall of the inner cavity, and the second sealing lip extends in a direction away from the wall of the inner cavity.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 An overall schematic diagram of the piston structure of an assembled vehicle clutch provided by an embodiment of the utility model;

[0017] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0018] The figures are as follows:

[0019] Cylinder body 100; inner cavity 110;

[0020] Metal skeleton substrate 200; bending portion 201; friction plate 210;

[0021] Rubber sealing element 300 ; rubber sealing layer 310 ; first sealing lip 311 ; second sealing lip 312 ; support frame 320 . DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] In the related art, the piston structure of a general assembled vehicle clutch is composed of a metal frame and a rubber sleeve formed by vulcanization, and the rubber sleeve is bonded to the metal frame by vulcanization. In the related art, the outer clutch piston of some dual-clutch transmissions has a relatively large design specification of the metal frame, so a larger rubber sleeve is required to match it during production. However, due to the limitation of the vulcanizing hot plate area and the number of vulcanizing chambers of the vulcanizer, vulcanization on a larger metal frame is more difficult. In addition, since the contact between the larger rubber sleeve and the metal frame is not tight enough and there is a gap, it is easy to affect the uniformity of the vulcanization reaction, resulting in low vulcanization efficiency and affecting production capacity. Therefore, it is necessary to propose a new piston structure for an assembled vehicle clutch.

[0027] To solve this problem, an embodiment of the utility model provides a piston structure of an assembled vehicle clutch. The rubber sealing layer 310 of the piston structure of the assembled vehicle clutch has close contact with the metal skeleton substrate 200 and good thermal conductivity, which can improve the uniformity of the vulcanization reaction between the rubber sealing layer 310 and the metal skeleton substrate 200, thereby effectively reducing the vulcanization time and improving production efficiency. The specific structure and function of the piston structure of the assembled vehicle clutch provided by the embodiment of the utility model will be further explained in combination with text and drawings.

[0028] Reference Figure 1 According to the piston structure of the assembled vehicle clutch provided by the embodiment of the utility model, it includes: a cylinder body 100, a metal skeleton substrate 200 and a rubber seal 300. The cylinder body 100 has an inner cavity 110; one end of the metal skeleton substrate 200 is arranged in the inner cavity 110, and the other end is connected with a friction plate 210; the rubber seal 300 is arranged between the metal skeleton substrate 200 and the inner cavity 110, and the rubber seal 300 and the wall surface of the inner cavity 110 are interference fit to ensure the sealing of the cylinder body 100. The rubber seal 300 includes a rubber sealing layer 310 and a support frame 320. The support frame 320 is arranged in the middle of the rubber sealing layer 310 and extends toward both sides. The support frame 320 abuts against the outer wall of the metal skeleton substrate 200, and the rubber sealing layer 310 is fixed to the metal skeleton substrate 200 by vulcanization.

[0029] According to the piston structure of the assembled vehicle clutch provided by the embodiment of the utility model, a support frame 320 is arranged in the rubber seal 300, and the support frame 320 lifts up the middle part of the rubber sealing layer 310. The two ends of the rubber sealing ring will be more closely fitted to the surface of the metal skeleton substrate 200 under the influence of elastic tension, which can reduce the gap between the rubber sealing layer and the metal skeleton substrate 200, and make the contact between the rubber sealing layer 310 and the metal skeleton substrate 200 closer. This is conducive to improving the contact between the rubber sealing layer 310 and the metal skeleton substrate 200 and improving the thermal conductivity between the rubber sealing layer 310 and the metal skeleton substrate 200. During the vulcanization process, the close contact between the rubber sealing layer 310 and the metal skeleton substrate 200 and the good thermal conductivity can improve the uniformity of the vulcanization reaction between the rubber sealing layer 310 and the metal skeleton substrate 200, thereby effectively reducing the vulcanization time and improving production efficiency.

[0030] Reference Figure 1 According to the piston structure of the assembled vehicle clutch provided by the embodiment of the utility model, a mounting cavity is provided in the rubber sealing layer 310, and the support frame 320 is installed in the mounting cavity. The connection method between the support frame 320 and the rubber sealing layer 310 is stable and reliable.

[0031] Reference Figure 1 According to the piston structure of the assembled vehicle clutch provided by the embodiment of the utility model, the support frame 320 is made of a heat-conducting material, which is beneficial to increase the heat conduction efficiency between the rubber sealing layer 310 and the metal skeleton matrix 200, so that the inside of the rubber sealing layer 310 can reach the temperature required for vulcanization more quickly, which is beneficial to improve the uniformity of the vulcanization reaction between the rubber sealing layer 310 and the metal skeleton matrix 200, thereby effectively reducing the vulcanization time and improving production efficiency.

[0032] Reference Figure 1 According to the piston structure of the assembled vehicle clutch provided by the embodiment of the utility model, the metal skeleton substrate 200 is provided at one end of the inner cavity 110 and has a bending portion 201, and at least part of the outer wall of the support frame 320 is in contact with the bending portion 201 of the metal skeleton substrate 200. The contact area between the support frame 320 and the metal skeleton substrate 200 is large, which is beneficial to increase the thermal conductivity between the rubber sealing layer 310 and the metal skeleton substrate 200.

[0033] Reference Figure 1 According to the piston structure of the assembled vehicle clutch provided by the embodiment of the utility model, the support frame 320 is made of metal material (such as iron, copper, etc.). The metal material has good thermal conductivity and a wide range of acquisition, which is conducive to reducing production costs.

[0034] Reference Figure 1 and Figure 2According to the piston structure of the assembled vehicle clutch provided by the embodiment of the utility model, a first sealing lip 311 and a second sealing lip 312 are arranged on the outer side of the rubber sealing layer 310, and the second sealing lip 312 is arranged at the end of the first sealing lip 311. The first sealing lip 311 extends in the direction toward the wall of the inner cavity 110, and the second sealing lip 312 extends in the direction away from the wall of the inner cavity 110. When hydraulic oil is input into the inner cavity 110 of the piston, the outer wall of the first sealing lip 311 abuts against the inner wall of the inner cavity 110 and slides along the inner wall. When sliding to a certain distance, the outer wall of the second sealing lip 312 also abuts against the inner wall of the inner cavity 110. The cooperation between the first sealing lip 311 and the second sealing lip 312 can effectively ensure the sealing between the inner cavity 110 of the piston and the linkage member.

[0035] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. The above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit it. The present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A piston structure of an assembled vehicle clutch, characterized in that: include: A cylinder body having an inner cavity; A metal skeleton substrate, one end of which is disposed in the inner cavity and the other end of which is connected to a friction plate; A rubber seal is arranged between the metal skeleton substrate and the inner cavity. The rubber seal includes a rubber sealing layer and a support frame. The support frame is arranged in the middle of the rubber sealing layer and extends toward both sides. The rubber sealing layer is fixed to the metal skeleton substrate by vulcanization, and the support frame abuts against the metal skeleton substrate.

2. The piston structure of the assembled vehicle clutch according to claim 1, characterized in that: An installation cavity is arranged in the rubber sealing layer, and the support frame is installed in the installation cavity.

3. The piston structure of the assembled vehicle clutch according to claim 1, characterized in that: The support frame is made of heat-conducting material.

4. The piston structure of the assembled vehicle clutch according to claim 3, characterized in that: The metal skeleton matrix is ​​arranged at one end of the inner cavity and has a bending portion, and at least a portion of the outer wall of the support frame is in contact with the bending portion.

5. The piston structure of the assembled vehicle clutch according to claim 3, characterized in that: The support frame is made of metal material.

6. The piston structure of the assembled vehicle clutch according to claim 1, characterized in that: A first sealing lip and a second sealing lip are arranged on the outer side of the rubber sealing layer. The second sealing lip is arranged at the end of the first sealing lip. The first sealing lip extends in a direction toward the wall of the inner cavity, and the second sealing lip extends in a direction away from the wall of the inner cavity.

Images