CN212690635U

CN212690635U - Air inlet valve centering structure of clutch booster

Info

Publication number: CN212690635U
Application number: CN202021230440.3U
Authority: CN
Inventors: 曹晖
Original assignee: Chongqing Jinhua Automobile Brake Co ltd
Current assignee: Chongqing Jinhua Automobile Brake Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-03-12
Anticipated expiration: 2030-06-29

Abstract

The utility model discloses a clutch booster air inlet valve centering structure, including valve assembly (1) and return spring (2), return spring (2) are pressed on the rear end face of valve assembly (1), characterized by: a positioning boss (3) is arranged on the rear end face of the valve assembly (1), the outer diameter of the positioning boss (3) is equal to the inner diameter of the return spring (2), and the inner diameter circle of the return spring (2) can be sleeved on the outer circle of the positioning boss (3); the clutch booster air inlet valve centering structure of this scheme of adoption design has the valve of preventing to send out the card, improves product quality's advantage.

Description

Air inlet valve centering structure of clutch booster

Technical Field

The utility model relates to a part of clutch booster especially relates to a clutch booster air inlet valve centering structure.

Background

The existing automobile clutch booster air inlet valve mainly comprises a valve assembly 1 and a return spring 2, wherein the return spring 2 is directly pressed on the end face of the rear part of the valve assembly 1, and because no centering device is arranged between the valve assembly 1 and the return spring 2, the valve is easily released when being assembled, and the valve is released to cause air leakage of a product, so that the quality and the service life of the product are influenced.

Therefore, those skilled in the art have endeavored to develop a centering structure for an intake valve of a clutch booster that allows smooth opening and closing of the valve without a hairpin phenomenon.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that a clutch booster air inlet valve centering structure is provided, the phenomenon that the hairpin appears in the valve opening and closing process can be avoided, and then the valve assembly gas leakage is prevented, improves holistic life and the quality of product.

In order to achieve the purpose, the utility model provides a clutch booster air inlet valve centering structure, including valve assembly 1 and return spring 2, return spring 2 presses on valve assembly 1's rear end face, be equipped with location boss 3 on valve assembly 1's the rear end face, the external diameter of location boss 3 with return spring 2's internal diameter equals, return spring 2's internal diameter circle can overlap on the excircle of location boss 3.

The utility model has the advantages that: the utility model discloses increase the rear end face of valve assembly and fix a position the boss to its size matches with return spring and suits, and the power that return spring acted on the valve assembly like this is along central evenly distributed, and opening and closing of valve all can be very smooth, the hairpin phenomenon can not appear, thereby has prevented that the valve assembly from leaking gas, has improved holistic life of product and quality.

Further, the valve assembly comprises a valve shell and a valve, the valve is arranged in the valve shell, the valve shell is tightly matched with the valve, the valve shell comprises a shell wall and a shell bottom, and an air hole is formed in the shell bottom. The advantages of such a design are: the air exhaust hole is left on the valve shell when the valve assembly is assembled, even if a fit clearance exists between the valve and the valve shell, compressed air of the air inlet only flows back to the air inlet through the air hole in the core part of the valve shell and cannot flow into the valve seat, so that the sealing performance of a product is ensured, and the product quality is improved.

Further, the air hole is arranged in the geometric center of the shell bottom. The advantages of such a design are: is beneficial to the stable operation.

Furthermore, the positioning boss and the valve assembly are of an integrally formed structure. The advantages of such a design are: the integral forming structure is stable, and the quality is improved

Furthermore, a magnetic patch is arranged on the surface of the positioning boss. The advantages of such a design are: the position spring and the positioning boss are combined to act.

Further, the diameter of the bottom of the positioning boss to the top surface of the positioning boss is gradually reduced, and the diameter of the bottom of the positioning boss is equal to the inner diameter of the return spring. The advantages of such a design are: the return spring can act and position the boss more smoothly.

Drawings

FIG. 1 is a schematic structural view of a centering structure of an intake valve of a clutch booster according to the present invention;

fig. 2 is a schematic view of the clutch booster of the present invention in its overall structure, wherein fig. 1 is an enlarged view of fig. 2 at B;

fig. 3 is a schematic structural diagram of the valve assembly of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, wherein it is noted that, in the description of the invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular manner, and therefore should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 3, the utility model provides a clutch booster air inlet valve centering structure, including valve assembly 1 and return spring 2, return spring 2 presses on valve assembly 1's rear end face, and valve assembly includes valve shell 1-1 and valve 1-2, valve 1-2 establishes in valve shell 1-1, valve shell 1-1 and valve 1-2 closely cooperate. The valve housing 1-1 comprises a housing wall 1-1a and a housing bottom 1-1 b.

The rear end face of the shell bottom 1-1b of the valve shell 1-1 is provided with a positioning boss 3, and the positioning boss 3 and the valve shell 1-1 are of an integrated structure. The outer diameter of the positioning boss 3 is equal to the inner diameter of the return spring 2, and the inner diameter circle of the return spring 2 can be clamped on the outer circle of the positioning boss 3. The force of the return spring 2 acting on the rear end face of the valve shell 1-1 of the valve assembly 1 through the positioning boss 3 is uniformly distributed along the center, so that the valve assembly 1 can be smoothly opened and closed, and the phenomenon of hair distribution can not occur.

The diameter of the bottom 3a of the positioning boss 3 to the top surface 3b thereof is gradually reduced, namely the positioning boss 3 is in the shape of a cone, and the diameter of the bottom 3a of the positioning boss 3 is equal to the inner diameter of the return spring 2. A magnetic patch not shown in the figure is adhered to the surface of the top surface 3b of the positioning boss 3.

The shell bottom 1-1b is provided with air holes 1-1c, the air holes 1-1c are through holes, and the air holes 1-1c are arranged at the geometric center of the shell bottom 1-1b, namely the air holes 1-1c are arranged at the circle center of the shell bottom 1-1 b.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a clutch booster air inlet valve centering structure, includes valve assembly (1) and return spring (2), return spring (2) are pressed on the rear end face of valve assembly (1), characterized by: the valve assembly is characterized in that a positioning boss (3) is arranged on the rear end face of the valve assembly (1), the outer diameter of the positioning boss (3) is equal to the inner diameter of the return spring (2), and the inner diameter circle of the return spring (2) can be sleeved on the outer circle of the positioning boss (3).

2. A clutch booster intake valve centering structure as set forth in claim 1, wherein: the valve assembly comprises a valve shell (1-1) and a valve (1-2), the valve (1-2) is arranged in the valve shell (1-1), the valve shell (1-1) and the valve (1-2) are tightly matched, the valve shell (1-1) comprises a shell wall (1-1a) and a shell bottom (1-1b), and an air hole (1-1c) is formed in the shell bottom (1-1 b).

3. A clutch booster intake valve centering structure as set forth in claim 2, wherein: the air hole (1-1c) is arranged at the geometric center of the shell bottom (1-1 b).

4. A clutch booster intake valve centering structure as set forth in claim 1, wherein: the positioning boss (3) and the valve assembly (1) are of an integrally formed structure.

5. A clutch booster intake valve centering structure as set forth in claim 1, wherein: and the surface of the positioning boss (3) is provided with a magnetic patch.

6. A clutch booster intake valve centering structure as set forth in claim 1, wherein: the diameter of the bottom of the positioning boss (3) to the top surface of the positioning boss is gradually reduced, and the diameter of the bottom of the positioning boss (3) is equal to the inner diameter of the return spring (2).