Automobile anti-water exhaust valve

Abstract

The invention relates to the technical field of automobile parts and discloses a waterproof automobile exhaust valve. The waterproof automobile exhaust valve comprises a valve body mounted on a rear axle assembly and further comprises a valve bonnet and two or more floating bodies, wherein the valve bonnet is connected with the outer part of the valve body; the lower end of valve bonnet is connected with the outer part of the valve body in a sealing way; a gas is reserved between the valve bonnet and the valve body; a plurality of strip-shaped holes, which are uniformly distributed, are arranged in the vertical direction of the valve bonnet; sliding blocks are arranged on the floating bodies and fit in the strip-shaped holes; the sliding blocks penetrate the valve bonnet and enter the gap between the valve bonnet and the valve body; and each floating body adopts a cavity structure. Through adoption of the technical scheme, the exhaust requirement of the rear axle assembly of an automobile in a normal running state can be met, and when the automobile runs in water, the waterproof automobile exhaust valve can automatically close the ventilation gap to prevent water from flowing into the valve body to meet the requirement of the automobile for running in water; and the waterproof automobile exhaust valve is simple in structure, can reduce the leakage of gear oil in the rear axle assembly and has high practicability.

Description

technical field [0001] The invention relates to the technical field of auto parts. Background technique [0002] On the automobile rear axle assembly, the exhaust valve assembly is used as a ventilation device to balance the internal and external pressure of the rear axle assembly and prevent external muddy water and dust from entering the interior of the rear axle assembly. Existing exhaust valve structures are mostly composed of exhaust valve body, exhaust valve cap, rubber gasket and spring. The exhaust valve cap is set on the exhaust valve body and connected with the exhaust valve body by riveting. The gasket is pressed tightly on the exhaust valve body by the spring. When the operating temperature of the rear axle assembly reaches about 90°, the gear oil forms oil vapor and then generates air pressure. When the internal air pressure of the rear axle assembly is greater than the pressure of the spring, the rubber gasket is pressed Jack up and open upwards, oil vapor is ...

AI Technical Summary

Problems solved by technology

Since automobiles generally have requirements for wading depth, and the deeper the wading depth, the better, and the structure of the existing exhaust valve adopts a spring force to control the opening pressure. Water ingress often occurs in the rear axle assembly during mid-range driving, which will cause the cleanliness of the gear oil to be out of tolerance, resulting in oil leakage from the oil seal in the rear axle assembly, premature damage to bearings, oil seals, and gears, and abnormal noise in the rear axle, etc. A series of problems; increasing the spring force and adjusting it to meet the wading depth requirements does not meet the opening pressure requirements, which will easily cause the internal air pressure of the rear axle assembly to be too large, and the lip of the oil seal will expand under the internal pressure, and then The problem of oil leakage occurs, so the existing exhaust valve structure restricts the wading performance of the car

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