Novel piston baffle

Abstract

A piston, the piston baffle and a limiting mechanism are all installed on a main rotating hub shaft, the piston and the limiting mechanism are arranged on the left side and the right side of the piston baffle respectively, the piston baffle comprises a piston baffle framework and vulcanized rubber, and an installation hole used for installing the main rotating hub shaft is formed in the middle of the piston baffle framework. Three surfaces of the vulcanized rubber cover the edge of the mounting hole, and the part, covered by the vulcanized rubber, of the outer side end face of the piston baffle framework is of a step structure with the inner portion low and the outer portion high. Compared with the structure of the traditional piston baffle, the piston baffle disclosed by the utility model needs less rubber under the condition that the sealing performance and the vulcanization strength are equivalent; and the design of the utility model also has the advantages that the matching precision between the piston baffle and the limiting mechanism can be effectively improved, the impact wear degree between the piston baffle and the limiting mechanism is reduced, and the like.

Description

Technical Field

[0001] This utility model relates to the field of pistons, specifically a novel piston baffle. Background Technology

[0002] Piston baffles are commonly used in wet dual clutches. They are located between the piston and the limiting parts and are an important component of the pressure oil chambers of the positioning piston and the stroke piston.

[0003] Piston baffles are frequently subjected to impacts when operating in a clutch. The piston baffle, through the sealing surface formed by the mating of vulcanized rubber with the shaft, allows traditional piston baffles to... Figure 6 As shown, its vulcanized rubber is three-sided. If the vulcanized surface on the right side comes into contact with the retaining ring, it will be easily worn. In addition, the dimensional accuracy of the vulcanized rubber is poor and difficult to control. Therefore, it is very important to design a new type of piston baffle that can meet both the vulcanization effect and the contact strength and dimensional accuracy requirements. Utility Model Content

[0004] The purpose of this invention is to provide a novel piston baffle to solve one or more of the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model discloses a novel piston baffle. The piston baffle includes a piston baffle skeleton and vulcanized rubber. The piston baffle skeleton has a mounting hole in the middle for mounting the main hub shaft. The vulcanized rubber covers the edges of the mounting hole on three sides. The part of the outer end face of the piston baffle skeleton covered by vulcanized rubber has a stepped structure with a lower inner surface and a higher outer surface.

[0006] In some embodiments, the stepped structure includes a recessed platform near the mounting hole, and the vulcanized rubber is coated on the recessed platform.

[0007] In some embodiments, the mounting hole is circular, and the recessed surface is annular.

[0008] In some embodiments, the recessed platform includes a plurality of recessed steps disposed along the edge of the mounting hole, the shape of which includes any one or more of the following: semicircle, rectangle, and trapezoid.

[0009] In some embodiments, the steps are evenly distributed along the edge of the mounting hole.

[0010] In some embodiments, the mounting hole is circular, and the recessed platform includes 12 recessed steps, which are evenly distributed along the circumference of the edge of the mounting hole.

[0011] In some embodiments, the piston baffle is mounted on a main hub shaft, the piston and the limiting mechanism are mounted on the main hub shaft, the piston and the limiting mechanism are arranged on the left and right sides of the piston baffle, the piston baffle is used for supporting and positioning the piston, the limiting mechanism is used for axially limiting the piston baffle, and one side of the vulcanized rubber is arranged between the limiting mechanism and the outer side end surface of the piston baffle framework.

[0012] In some embodiments, the limiting mechanism is a snap ring.

[0013] Compared with the prior art, the piston baffle has the advantages that: compared with the structure of the traditional piston baffle, less rubber is required under the condition that the sealing performance and the vulcanization strength are equivalent; the step structure design can effectively improve the cooperation precision between the piston baffle and the limiting mechanism, and can also reduce the impact and wear degree between the piston baffle and the limiting mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 FIG. 1 is a piston assembly relationship schematic diagram of the novel piston baffle in some embodiments of the present application;

[0015] Figure 2 FIG. 2 is a cross-sectional schematic diagram of the piston baffle in some embodiments of the present application;

[0016] Figure 3 FIG. 3 is a semicircular local vulcanization schematic diagram in some embodiments of the present application;

[0017] Figure 4 FIG. 4 is a rectangular local vulcanization schematic diagram in some embodiments of the present application;

[0018] Figure 5 FIG. 5 is a trapezoidal local vulcanization schematic diagram in some embodiments of the present application;

[0019] Figure 6 FIG. 6 is a traditional piston baffle vulcanization structure schematic diagram. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to Figures 1 to 5, figure is a preferred embodiment of the utility model, it discloses a novel piston baffle, piston 1, piston baffle 2, limiting mechanism 3 are installed on main hub shaft 4, the limiting mechanism 3 in it can be snap ring.Piston baffle 2 is installed in the right side of piston 1, is used for supporting and positioning piston 1;Limiting mechanism 3 is installed in the right side of piston baffle 2, is used for axially limiting piston baffle 2.

[0022] The specific structure of the above-mentioned piston baffle 2 can be:

[0023] Piston baffle 2 includes piston baffle skeleton 5 and vulcanized rubber 6, the middle position of piston baffle skeleton 5 is provided with mounting hole for installing main hub shaft, vulcanized rubber 6 is wrapped on the edge of mounting hole on three sides, the part (i.e. right side wrapping surface) of the right side end surface (i.e. outer side end surface) of piston baffle skeleton 5 covered by vulcanized rubber 6 is a stepped structure with inner low and outer high, wherein the stepped structure includes sunken platform close to the side of mounting hole, and vulcanized rubber 6 is wrapped on the sunken platform.

[0024] In some specific implementations, the mounting hole is circular, and the sunken platform is a circular annular sunken step arranged along the edge of the mounting hole.

[0025] In some specific implementations, the sunken platform includes a plurality of sunken steps arranged along the edge of the mounting hole, and the shape of the steps can be any one or more of semicircular, rectangular, trapezoidal and the like, and the plurality of steps can be evenly arranged along the edge of the mounting hole. When the mounting hole is circular, the steps are evenly distributed along the circumference of the edge of the mounting hole, and the specific number of steps can be flexibly adjusted according to the vulcanization strength, such as: Figure 3 (the sunken platform includes 12 semicircular sunken steps evenly distributed along the circumference of the edge of the mounting hole), Figure 4 (the sunken platform includes 12 rectangular sunken steps evenly distributed along the circumference of the edge of the mounting hole), Figure 5 (the sunken platform includes 12 trapezoidal sunken steps evenly distributed along the circumference of the edge of the mounting hole).

[0026] The above-mentioned undisclosed matters can be realized by using existing technology, and therefore will not be described here.

[0027] Finally, it should be pointed out that in the description of the utility model, it should be pointed out that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0028] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term "arrange", "install", "link", "connect" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside the communication, for ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0029] The above is further detailed description of the utility model in combination with specific embodiments, which cannot be considered as limiting the specific implementation of the utility model to these descriptions. For ordinary skilled person in the art to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can also be made, which should be considered as belonging to the protection scope determined by the claims submitted by the utility model.

Claims

1. A novel piston baffle characterized by, The piston baffle comprises a piston baffle framework and vulcanized rubber, a mounting hole for mounting a main hub shaft is arranged at the middle position of the piston baffle framework, the vulcanized rubber is wrapped on the edges of the mounting hole on three sides, and the part of the outer side end surface of the piston baffle framework wrapped by the vulcanized rubber is in a stepped structure with the inner side being lower and the outer side being higher.

2. A novel piston baffle as claimed in claim 1, wherein: The stepped structure comprises a sunken platform near one side of the mounting hole, and the vulcanized rubber is wrapped on the sunken platform.

3. A novel piston baffle as claimed in claim 2, wherein: The mounting hole is circular, and the sunken platform is in a circular ring shape.

4. A novel piston baffle as claimed in claim 2, wherein: The sunken platform comprises a plurality of sunken steps arranged along the edge of the mounting hole, and the shape of the steps comprises any one or more of a semicircle, a rectangle and a trapezoid.

5. A novel piston baffle as claimed in claim 4, wherein: The plurality of steps are evenly arranged along the edge of the mounting hole.

6. A novel piston baffle as claimed in claim 5, wherein: The mounting hole is circular, and the sunken platform comprises 12 sunken steps, and the 12 steps are evenly distributed along the circumference of the edge of the mounting hole.

7. A novel piston baffle as claimed in any one of claims 1 to 6, characterized by: The piston baffle is mounted on the main hub shaft, the piston and a limiting mechanism are also mounted on the main hub shaft, the piston and the limiting mechanism are arranged on the left and right sides of the piston baffle respectively, the piston baffle is used for supporting and positioning the piston, the limiting mechanism is used for axially limiting the piston baffle, and one side of the vulcanized rubber is arranged between the limiting mechanism and the outer side end surface of the piston baffle framework.

8. A novel piston baffle as claimed in claim 7, wherein: The limiting mechanism is a snap ring.

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