Automotive air valve

Abstract

The utility model provides a vehicle air valve which comprises a valve body, a valve element, a spring and a chuck. The whole valve body is cylindrical, a stepped through hole is formed in the valve body, the stepped through hole is formed by connecting a large hole and a small hole, an annular stepped surface is formed at the joint of the large hole and the small hole, and an annular bulge is arranged on the annular stepped surface; the valve element, the spring and the chuck are installed in a large hole of the valve body, the upper portion of the valve element is large in upper portion and small in lower portion, the outer diameter of the upper portion of the valve element is larger than the inner diameter of the small hole of the valve body, an annular groove matched with the annular protrusion is formed in the upper end face of the valve element, and the lower portion of the valve element is sleeved with the spring and penetrates out of a middle hole of the chuck. The chuck is fixed to the valve body and used for limiting the spring, and the chuck is provided with a hollow structure. The annular protrusion of the valve body and the annular groove of the valve element are installed in a matched mode, the sealing performance of the air valve can be guaranteed, and therefore the service life of the air valve is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the field of vehicle sealing, and particularly relates to a gas valve structure. Background Art

[0002] In an automotive brake booster system, there are situations where the vacuum booster cannot obtain a vacuum or obtains insufficient vacuum, which will lead to poor braking performance of the vehicle and is prone to safety hazards. The vacuum pump serves to extract vacuum for the vacuum booster, thereby ensuring that the vehicle can brake within a safe distance under various working conditions.

[0003] Gas valves are usually used in vacuum pumps, and the gas valves have high requirements for precision and are difficult to manufacture. Therefore, the gas valves provided by the prior art are prone to have the disadvantages of poor sealing and low reliability, making it difficult to meet the requirements of vehicle safety braking. Summary of the Utility Model

[0004] In order to solve the above problems, the utility model provides a vehicle gas valve with reliable sealing performance.

[0005] To solve the above technical problems, the solution of the utility model is: a vehicle gas valve, comprising a valve body, a valve core, a spring and a chuck; the valve body is cylindrical as a whole, and a stepped through-hole is provided on the valve body, which is formed by connecting a large hole and a small hole. A ring-shaped step surface is formed at the connection of the large hole and the small hole, and a ring-shaped protrusion is provided on the ring-shaped step surface; the valve core, the spring and the chuck are installed in the large hole of the valve body. The valve core is larger at the top and smaller at the bottom, the outer diameter of the upper part of the valve core is larger than the inner diameter of the small hole of the valve body, and a ring-shaped groove matching with the ring-shaped protrusion is provided on the upper end surface of the valve core. The lower part of the valve core is sleeved with a spring and passes through the middle hole of the chuck and extends outwards. The chuck is fixed on the valve body to limit the spring, and the chuck is provided with a hollow structure.

[0006] Further, an end face ring groove is provided on the upper end face of the valve body, and an end face sealing ring is assembled in the end face ring groove.

[0007] Further, a circumferential surface ring groove is provided on the outer circumferential surface of the valve body, and a circumferential surface sealing ring is assembled in the circumferential surface ring groove.

[0008] In one embodiment, a groove is provided on the outer side end of the inner wall of the large hole of the valve body for fixing the chuck.

[0009] In one embodiment, a circular groove is provided on the upper end face of the valve core.

[0010] In one embodiment, a chamfer is provided at the lower end of the valve core.

[0011] Compared with the existing technology, the beneficial effects of the present utility model are as follows: By fitting and installing the annular protrusion of the valve body with the annular groove of the valve core, the sealing performance of the air valve can be ensured, thereby effectively extending the service life of the air valve. In a further technical solution, by providing an end face sealing ring and a circumferential sealing ring, the installation scenario of the air valve is more flexible, and it can be either press-fitted and built into the product or externally connected to the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic cross-sectional view of the overall air valve in the implementation of the present utility model;

[0013] Figure 2 It is an exploded structure diagram of the air valve in the implementation of the present utility model;

[0014] The reference numerals are:

[0015] 1, valve body; 2, valve core; 3, spring; 4, chuck; 5, end face sealing ring; 6, circumferential sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] In order to make the purpose, technical solutions and advantages of the utility model more clear and understandable, the present utility model will be described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not limited to the present utility model.

[0017] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are 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, and therefore should not be construed as a limitation to the present utility model.

[0018] Such as Figure 1 、 2As shown in the figure, a preferred embodiment of the present utility model is: a vehicle air valve, which includes a valve body 1, a valve core 2, a spring 3 and a chuck 4; the valve body 1 is cylindrical as a whole, and a stepped through hole is provided on the valve body 1. The stepped through hole is formed by connecting a large hole and a small hole, and a ring-shaped step surface is formed at the connection of the large hole and the small hole. A ring-shaped protrusion is provided on the ring-shaped step surface; the valve core 2, the spring 3 and the chuck 4 are installed in the large hole of the valve body 1. A groove is provided on the outer side end of the inner wall of the large hole of the valve body 1 for fixing the chuck 4; the valve core 2 is larger at the top and smaller at the bottom, the outer diameter of the upper part of the valve core 2 is larger than the inner diameter of the small hole of the valve body 1, and a ring-shaped groove and a circular groove that cooperate with the ring-shaped protrusion are provided on the upper end surface of the valve core 2. The lower part of the valve core 2 is sleeved with a spring 3 and passes through the middle hole of the chuck 4 and protrudes outwards, and a chamfer is provided at the lower end. The chuck 4 is fixed on the valve body 1 to limit the spring 3, and the chuck 4 is provided with a hollow structure.

[0019] As Figure 1 , 2 shown in the figure, an end face ring groove is provided on the upper end face of the valve body 1, and an end face sealing ring 5 is assembled in the end face ring groove; a circumferential surface ring groove is provided on the outer circumferential surface of the valve body 1, and a circumferential surface sealing ring 6 is assembled in the circumferential surface ring groove.

[0020] In this embodiment, the ring-shaped protrusion of the valve body 1 is matched with the ring-shaped groove of the valve core 2 for installation, which can ensure the sealing performance of the air valve, thereby effectively extending the service life of the air valve. By providing the end face sealing ring 5 and the circumferential surface sealing ring 6, the installation scenario of the air valve is more flexible, and it can be either press-fitted and built into the product or externally connected to the pipeline.

[0021] The above embodiment is a preferred implementation scheme of the present utility model. In addition, the present utility model can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the scope of the patent of the present utility model.

[0022] In order to make it more convenient for those of ordinary skill in the art to understand the improvements of the present utility model over the prior art, some drawings and descriptions of the present utility model have been simplified, and for the sake of clarity, some other elements have also been omitted in this application document. Those of ordinary skill in the art should be aware that these omitted elements can also constitute the content of the present utility model.

Claims

1. A vehicle air valve, characterized in that: It includes a valve body (1), a valve core (2), a spring (3) and a chuck (4); the valve body (1) is cylindrical as a whole, and a stepped through hole is provided on the valve body (1), which is formed by connecting a large hole and a small hole. An annular step surface is formed at the connection of the large hole and the small hole, and an annular protrusion is provided on the annular step surface; the valve core (2), the spring (3) and the chuck (4) are installed in the large hole of the valve body (1). The valve core (2) is larger at the top and smaller at the bottom. The outer diameter of the upper part of the valve core (2) is larger than the inner diameter of the small hole of the valve body (1). An annular groove matching with the annular protrusion is provided on the upper end surface of the valve core (2). The lower part of the valve core (2) is sleeved with a spring (3) and passes through the middle hole of the chuck (4) and projects outwards. The chuck (4) is fixed on the valve body (1) to limit the spring (3), and the chuck (4) is provided with a hollow structure.

2. The vehicle air valve according to claim 1, wherein: An end face ring groove is provided on the upper end face of the valve body (1), and an end face sealing ring (5) is assembled in the end face ring groove.

3. The vehicle air valve according to claim 1 or 2, characterized in that: A circumferential surface ring groove is provided on the outer circumferential surface of the valve body (1), and a circumferential surface sealing ring (6) is assembled in the circumferential surface ring groove.

4. The vehicle air valve according to claim 1 or 2, characterized in that: A groove is provided on the outer side end of the inner wall of the large hole of the valve body (1) for fixing the chuck (4).

5. The vehicle air valve according to claim 1 or 2, characterized in that: A circular groove is provided on the upper end surface of the valve core (2).

6. The vehicle air valve according to claim 1 or 2, characterized in that: A chamfer is provided at the lower end of the valve core (2).

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