Wet clutch, shaft assembly of wet clutch and vehicle

Abstract

According to the shaft assembly of the wet clutch, the shaft and the structure on the outer edge of the shaft are in interference fit through press fitting, the sealing ring assembly special for sealing is arranged on the basis, the structure comprises the rigid bushing ring structure, rigid supporting is provided through the rigid structure, and the sealing performance of the shaft assembly is improved. The elastic sealing ring is used for installing and fixing the elastic sealing ring, the structure of the elastic sealing ring is attached to the peripheral face of the clutch gear shaft to form a good elastic sealing face, through the design, the technological requirement for press fitting can be effectively lowered, the problem that the sealing performance of the press fitting technology is insufficient is solved through the structure of the elastic sealing ring, and a welding connection mode can be effectively replaced; potential quality hazards caused by a welding process to sealing are effectively avoided, and the technical problems that a connecting structure of a reciprocating sealing position of an existing vehicle clutch is unstable in sealing quality and prone to sealing failure are effectively solved. The utility model further provides a wet clutch and a vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle equipment, and in particular, to a shaft assembly of a wet clutch, a wet clutch and a vehicle. Background Art

[0002] In a vehicle clutch assembly, a sealed connection often occurs between two parts, especially rotating body components. The basic sealing requirements are: being able to ensure its sealing performance and having a certain connection strength at this position. The commonly used sealing connection methods include welding and press-fitting processes. However, the welding process is accompanied by high temperature and heat, which makes the product prone to product defects such as welding deformation, slag splashing, and pores during the processing. At the same time, the processing process is also likely to pose quality risks to the sealing environment. In order to ensure its sealing effect, the press-fitting process is basically used for axial press-fitting and fixing in the clutch assembly and cannot achieve end-face sealing. It can be seen that its application scenarios are greatly restricted and are not suitable for application in many cases.

[0003] One specific sealing application scenario: a sealing position in the clutch where a piston reciprocates. If the welding process is used, the high temperature and heat brought by the welding process pose a high quality risk to the rubber lip: the slag protection is not in place and splashes into the rubber area, and the welding temperature is too high to cause lip deformation, etc. If only the press-fitting scheme is used, due to the too thin material wall, leakage may occur when the piston bears high pressure, resulting in part failure.

[0004] In summary, the connection structure of the existing vehicle clutch with a reciprocating sealing position has technical problems of unstable sealing quality and easy sealing failure. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is that the connection structure of the existing vehicle clutch with a reciprocating sealing position has technical problems of unstable sealing quality and easy sealing failure.

[0006] To solve the above problems, the utility model provides a shaft assembly of a wet clutch, including a clutch gear shaft and a gear shaft mating disc. The gear shaft mating disc is in the shape of a hollow disc body and is hermetically sleeved on the outer periphery of the clutch gear shaft. A sealing ring assembly is press-fitted and fixed on the outer peripheral surface of the clutch gear shaft. The sealing ring assembly includes a rigid lining ring and an elastic sealing ring which are integrally connected. One end face of the rigid lining ring is attached to the end face of the joint between the clutch gear shaft and the other. One side edge of the elastic sealing ring abuts against and seals the outer peripheral surface of the clutch gear shaft.

[0007] The utility model provides a sealing connection structure design for a shaft and its surrounding structure inside a new type of clutch. The overall structure uses press-fitting to form an interference fit between the shaft and its outer edge structure, and on this basis, a seal ring assembly dedicated to sealing is provided. This structure includes a rigid rigid lining ring structure, which provides a rigid support through such a rigid structure for installing and fixing an elastic sealing ring. The structure of the elastic sealing ring fits the outer peripheral surface of the clutch tooth shaft to form a good elastic sealing surface. Through such a design, the process requirements of press-fitting can be effectively reduced, and the problem of insufficient sealing performance of the press-fitting process can be compensated by the structure of the elastic sealing ring. It can effectively replace the welding connection method, effectively avoid the quality hidden dangers brought by the welding process to the seal, and effectively solve the technical problems of unstable sealing quality and easy seal failure existing in the connection structure of the reciprocating motion sealing position of the existing vehicle clutch.

[0008] As a preferred solution, a stepped surface structure is provided on the outer side surface of the clutch tooth shaft, and the inner peripheral edge of the tooth shaft mating disc is in interference fit with the stepped surface structure of the clutch tooth shaft. This design optimizes the end face structure of the mutual cooperation between the clutch tooth shaft and the tooth shaft mating disc. Specifically for the interference fit between the two, a protruding stepped surface structure is provided on the outer side surface of the clutch tooth shaft, and the inner edge surface of the tooth shaft mating disc is in interference fit with this stepped surface structure, increasing the mating surface of the interference fit compared to the general design and improving the fixing and sealing effects.

[0009] As a preferred solution, the rigid lining ring includes a plate-shaped press-fitting part and a plug-in boss protruding from the surface of the press-fitting part. The press-fitting part and the plug-in boss are integrally formed and connected. The plug-in bosses are evenly distributed along the circumference of the press-fitting part. The press-fitting part fits the stepped surface structure of the clutch tooth shaft. The elastic sealing ring is provided with a through hole along the thickness direction, and the elastic sealing ring is inserted into the plug-in boss through the hole. This design optimizes the structural design of the seal ring assembly. A plurality of plug-in bosses for inserting and fixing the elastic sealing ring are evenly distributed on the rigid lining ring, and the distribution of the plug-in bosses matches the contour structure of the press-fitting part itself and is evenly distributed in a ring shape.

[0010] As a preferred solution, an adhesive layer is provided between the hole of the elastic sealing ring and the plug-in boss for auxiliary plug-in fixing through adhesion. This design greatly improves the fixing effect between the elastic sealing ring and the rigid lining ring by providing an adhesive layer between the hole of the elastic sealing ring and the plug-in boss.

[0011] As a preferred solution, one end of the plugging boss, which is away from the plate-shaped press-fitting part, has a protruding anchoring structure for positioning the elastic sealing ring. This design further optimizes the positioning effect between the plugging boss and the elastic sealing ring. An anchoring structure with a radially enlarged part is integrally connected to the end of the plugging boss for positioning the elastic sealing ring. The radial dimension of this enlarged structure is larger than the aperture of the jack on the elastic sealing ring, thereby effectively preventing the elastic sealing ring from coming off the rigid lining ring.

[0012] As a preferred solution, the elastic sealing ring is in the shape of a laterally flattened circular ring. The plugging boss passes through the position with a smaller thickness of the elastic sealing ring, and the side edges of the elastic sealing ring have arc-shaped chamfers. This design optimizes the outer contour structure of the elastic sealing ring. By setting arc-shaped chamfers on the outer side edges of the sealing ring, the possibility of damaging the sealing ring during assembly is reduced, ensuring the durability of the seal.

[0013] The present utility model also provides a wet clutch including the wet clutch shaft assembly in any one of the above items. Since the wet clutch shaft assembly described above has the above beneficial effects, the wet clutch having the wet clutch shaft assembly should also have corresponding beneficial effects.

[0014] The present utility model also provides a vehicle including the above wet clutch. Since the above wet clutch has the above beneficial effects, the vehicle having the wet clutch should have corresponding beneficial effects. Description of the Drawings

[0015] Figure 1 It is a schematic cross-sectional structure diagram of a wet clutch shaft assembly provided by the present utility model;

[0016] Figure 2 is Figure 1 a schematic diagram of a partial cross-sectional structure of the wet clutch shaft assembly in the figure;

[0017] Figure 3 is Figure 1 a schematic diagram of a partial cross-sectional structure of the wet clutch shaft assembly in the figure.

[0018] Among them, Figures 1-3 in the figure:

[0019] 1. Clutch gear shaft; 2. Gear shaft mating disc; 3. Rigid lining ring; 3-1. Plugging boss; 3-2. Press-fitting part; 4. Elastic sealing ring. Detailed Embodiments

[0020] To make the technical means, creative features, achieved purposes, and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Before giving a detailed description of the working principle of the present utility model, it is necessary to further explain the description of the present utility model: In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or a welded connection between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] Refer to Figures 1-3 The following embodiments are described as follows. Figure 1 FIG. is a schematic cross-sectional structure diagram of a shaft assembly of a wet clutch provided by the present utility model; Figure 2 is Figure 1 A partial cross-sectional structure diagram of the shaft assembly of the wet clutch in the schematic diagram;

[0024] A shaft assembly of a wet clutch provided in this embodiment includes a clutch gear shaft 1 and a gear shaft mating disc 2. The gear shaft mating disc 2 is in the shape of a hollow disc and is hermetically sleeved on the outer periphery of the clutch gear shaft 1. A seal ring assembly is press-fitted and fixed on the outer peripheral surface of the clutch gear shaft 1. The seal ring assembly includes a rigid lining ring 3 and an elastic sealing ring 4 that are integrally connected. One end face of the rigid lining ring 3 is in contact with the end face of the joint between the rigid lining ring 3 and the clutch gear shaft 1, and one side edge of the elastic sealing ring 4 abuts against the outer peripheral surface of the clutch gear shaft 1 for sealing.

[0025] The present utility model provides a sealing connection structure design for a shaft and its surrounding structure inside a new type of clutch. As a whole, press-fitting is adopted to form an interference fit between the shaft and its outer edge structure, and on this basis, a seal ring assembly dedicated to sealing is provided. This structure includes a rigid rigid lining ring 3 structure, which provides a rigid support through such a rigid structure for installing and fixing an elastic sealing ring 4. The structure of the elastic sealing ring 4 fits the outer peripheral surface of the clutch tooth shaft 1 to form a good elastic sealing surface. Through such a design, the process requirements of press-fitting can be effectively reduced, and the problem of insufficient sealing performance of the press-fitting process can be compensated for by the structure of the elastic sealing ring 4. It can effectively replace the welding connection method, effectively avoid the quality hidden dangers brought by the welding process to the seal, and effectively solve the technical problems of unstable sealing quality and easy seal failure existing in the connection structure of the reciprocating motion sealing position of the existing vehicle clutch.

[0026] In the technical solution provided in this embodiment, a stepped surface structure is provided on the outer side surface of the clutch tooth shaft 1, and the inner peripheral edge of the tooth shaft mating disc 2 is in interference fit with the stepped surface structure of the clutch tooth shaft 1. This design optimizes the end surface structure of the mutual cooperation between the clutch tooth shaft 1 and the tooth shaft mating disc 2. Specifically for the interference fit between the two, a convex stepped surface structure is provided on the outer side surface of the clutch tooth shaft 1, and the inner edge surface of the tooth shaft mating disc 2 is in interference engagement with this stepped surface structure, increasing the mating surface of the interference fit compared with the general design and improving the fixing and sealing effects.

[0027] In the technical solution provided in this embodiment, the rigid lining ring 3 includes a plate-shaped press-fitting portion 3-2 and a plug-in boss 3-1 protruding from the surface of the press-fitting portion 3-2, which are integrally formed and connected. The plug-in bosses 3-1 are evenly distributed along the circumference on the press-fitting portion 3-2. The press-fitting portion 3-2 fits the stepped surface structure of the clutch tooth shaft 1. The elastic sealing ring 4 is provided with a through hole along the thickness direction, and the elastic sealing ring 4 is plugged with the plug-in boss 3-1 through the hole. This design optimizes the structural design of the seal ring assembly. A plurality of plug-in bosses 3-1 for plugging and fixing the elastic sealing ring 4 are evenly distributed on the rigid lining ring 3, and the distribution of the plug-in bosses 3-1 matches the contour structure of the press-fitting portion 3-2 itself and is evenly distributed in a ring shape.

[0028] In the technical solution provided in this embodiment, an adhesive layer is provided between the hole of the elastic sealing ring 4 and the plug-in boss 3-1 for auxiliary plugging and fixing through adhesion. This design greatly improves the fixing effect between the elastic sealing ring 4 and the rigid lining ring 3 by providing an adhesive layer between the hole of the elastic sealing ring 4 and the plug-in boss 3-1.

[0029] In the technical solution provided by this embodiment, the plug-in boss 3-1 has a protruding anchoring structure at one end facing away from the plate-shaped press-fitting portion 3-2 for positioning the elastic sealing ring 4. This design further optimizes the positioning effect between the plug-in boss 3-1 and the elastic sealing ring 4. A radially enlarged anchoring structure is integrally connected to the end of the plug-in boss 3-1 for positioning the elastic sealing ring 4. The radial dimension of this enlarged structure is larger than the aperture of the insertion hole on the elastic sealing ring 4, so as to effectively prevent the elastic sealing ring 4 from disengaging from the rigid lining ring 3.

[0030] In the technical solution provided by this embodiment, the elastic sealing ring 4 is in the shape of a laterally flattened circular ring. The plug-in boss 3-1 passes through the position with a smaller thickness of the elastic sealing ring 4, and the side edges of the elastic sealing ring 4 have arc-shaped chamfers. This design optimizes the outer contour structure of the elastic sealing ring 4. By providing arc-shaped chamfers on the outer side edges of the sealing ring, the possibility of damaging the sealing ring during assembly is reduced, ensuring the durability of the seal.

[0031] The present utility model also provides a wet clutch including the wet clutch shaft assembly in any one of the above embodiments. Since the wet clutch shaft assembly described above has the above beneficial effects, the wet clutch having the wet clutch shaft assembly should also have corresponding beneficial effects.

[0032] The present utility model also provides a vehicle including the wet clutch in the above embodiment. Since the wet clutch described above has the above beneficial effects, the vehicle having the wet clutch should also have corresponding beneficial effects.

[0033] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will all fall within the protection scope of the present utility model.

Claims

1. A shaft assembly of a wet clutch, comprising a clutch gear shaft (1) and a gear shaft matching plate (2), wherein the gear shaft matching plate (2) is in the shape of a hollow plate and is sealingly sleeved on the outer periphery of the clutch gear shaft (1); characterized in that: A sealing ring assembly is press-fitted and fixed on the outer circumferential surface of the clutch gear shaft (1), and the sealing ring assembly comprises a rigid backing ring (3) and an elastic sealing ring (4) which are integrally connected. One end face of the rigid backing ring (3) is in contact with the end face of the joint between the two of the clutch gear shaft (1), and one side edge of the elastic sealing ring (4) is in contact with the outer circumferential surface of the clutch gear shaft (1) for sealing.

2. The shaft assembly of the wet clutch according to claim 1, characterized in that: The outer side surface of the clutch gear shaft (1) is provided with a step surface structure, and the inner peripheral edge of the gear shaft matching plate (2) is interference-fitted with the step surface structure of the clutch gear shaft (1).

3. The shaft assembly of the wet clutch according to claim 2, characterized in that: The rigid bushing (3) comprises a plate-shaped press-fitting portion (3-2) and an inserting boss (3-1) protruding from the surface of the press-fitting portion (3-2); the press-fitting portion (3-2) and the inserting boss (3-1) are integrally formed and connected; the inserting boss (3-1) is evenly distributed on the press-fitting portion (3-2) along the circumference; the press-fitting portion (3-2) fits the step surface structure of the clutch gear shaft (1); the elastic sealing ring (4) is provided with a through insertion hole along the thickness direction; the elastic sealing ring (4) is inserted into the inserting boss (3-1) through the insertion hole.

4. The shaft assembly of the wet clutch according to claim 3, characterized in that: An adhesive layer is provided between the insertion hole of the elastic sealing ring (4) and the insertion boss (3-1), and the insertion and fixing are assisted by adhesive.

5. The shaft assembly of the wet clutch according to claim 4, characterized in that: The plug-in boss (3-1) has a protruding anchoring structure at an end portion facing away from the plate-shaped press-fitting portion (3-2), which is used to position the elastic sealing ring (4).

6. The shaft assembly of the wet clutch according to claim 5, characterized in that: The elastic sealing ring (4) is in the shape of a laterally flattened circular ring, the plug-in boss (3-1) passes through a position of the elastic sealing ring (4) where the thickness is relatively small, and the side edges of the elastic sealing ring (4) have arc-shaped chamfers.

7. A wet clutch, characterized in that: A shaft assembly comprising a wet clutch as claimed in any one of claims 1 to 6.

8. A vehicle, characterized in that: A shaft assembly comprising a wet clutch as claimed in claim 7.

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