Vehicle oil tank cap with high leakproofness

Abstract

The invention discloses a high-sealing automobile fuel tank cover, comprising an oil inlet pipe, a surface of the oil inlet pipe is sleeved with a fuel tank cover body, the surface of the oil inlet pipe is provided with external threads, and the inner wall of the fuel tank cover body is An inner thread matching the outer thread is provided, a sealing device is fixedly connected to the center of the oil tank cover body, and the bottom end of the sealing device penetrates the oil tank cover body and the oil inlet pipe in sequence from top to bottom and extends to the oil inlet pipe Inside, the sealing device includes a sealing sleeve, the top of the sealing sleeve is provided with a hydraulic groove, a piston is movably connected in the hydraulic groove, and a hydraulic pressure is provided in the gap between the bottom of the piston and the hydraulic groove. Oil. By setting the sealing device, the sealing effect is achieved, which prevents the oil in the fuel tank from leaking due to shaking when the car is running, and at the same time prevents the dust in the air from entering the fuel tank, which ensures the cleanliness of the oil in the fuel tank and the normal operation of the car. Use performance.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a high-tightness auto fuel tank cap. Background technique [0002] As the foundation of the automobile industry, auto parts are a necessary factor to support the sustainable and healthy development of the automobile industry. In particular, the current independent development and innovation in the auto industry, which is in full swing, requires a strong component system to support it. Automobile self-owned brand and technological innovation need parts and components as the basis, and the independent innovation of parts and components will generate a strong impetus to the development of the whole vehicle industry. Without the support of a strong component system, it will be difficult for independent brands to grow stronger. [0003] The fuel tank cap refers to the box used to store gasoline on the car. It is square in shape and made of stainless steel. There is only a small g...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-tightness automotive fuel tank cap, which has the advantage of good sealing performance and solves the problem that the sealing performance of the fuel tank cap is not ideal

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