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Automotive waterproof breather valve

A waterproof breather valve and breather valve technology, applied in valve details, valve devices, ventilation devices, etc., can solve the problems of excessive gear oil cleanliness, abnormal sound of rear axle, oil leakage of rear axle assembly, etc. The effect of leakage, simple structure and good practicability

Active Publication Date: 2016-06-29
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 vent valve adopts a spring force to control the opening pressure. When driving, the rear axle assembly often has water ingress, 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 from the rear axle. 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 Oil leakage problem, so the existing vent valve structure restricts the wading performance of the car

Method used

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  • Automotive waterproof breather valve
  • Automotive waterproof breather valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] This embodiment relates to a kind of automobile waterproof ventilation valve, such as figure 1 As shown, it includes a breather valve body 1 installed on the automobile rear axle assembly, and a breather valve cap 2 slidingly sleeved on the breather valve body 1 . The bottom end of the vent valve body 1 is a first hollow cylinder 11 with a slightly smaller diameter. It is a hollow cone 12 that gradually becomes larger from bottom to top, and at the upper end of the hollow cone 12 is a second hollow cylinder 13 with a slightly larger diameter. The first hollow cylinder 11, the hollow cone 12 and the second hollow cylinder 13 constitute The ventilation valve body 1 has a three-stage structure from bottom to top.

[0021] The vent valve cap 2 is a shell structure with a hollow inside, its outer shell is cylindrical or other shapes, and its inner shell is a three-stage structure matched with the outer wall of the vent valve body 1, the first part of the vent valve body 1 l...

Embodiment 2

[0025] This embodiment relates to a kind of automobile waterproof ventilation valve, such as figure 2 As shown, it includes a breather valve body 1 installed on the automobile rear axle assembly, and a breather valve cap 2 slidingly sleeved on the breather valve body 1 . The vent valve body 1 and the vent valve cap 2 have roughly the same structure as in Embodiment 1, the difference is that in order to ensure the linearity of the vent valve cap 2 sliding up and down along the vent valve body 1, the vent valve body 1 is located inside the second The hollow cylinder 13 is provided with two upper and lower guide seats 3, and the center of the guide seat 3 is provided with a central guide hole. The guide seat 3 is also provided with a plurality of vent holes 4 for communicating with the inside and outside of the vent valve body 1. The central guide holes of the upper and lower guide seats 3 are arranged coaxially, and the guide seats 3 can be arranged at other positions in the ve...

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Abstract

The invention relates to an automobile waterproof vent valve. The automobile waterproof vent valve comprises a vent valve body and a vent valve cap, wherein the vent valve body is installed on a rear axle assembly, the vent valve body is sleeved with the vent valve cap in a sliding mode, the vent valve cap is of a hollow shell structure, the outer wall of the vent valve body and an inner shell of the vent valve cap have mutually matched tapered structures, and a supporting exhaust structure enabling gas in the vent valve body to be freely exhausted is arranged between the bottom end of the vent valve cap and the vent valve body. The automobile waterproof vent valve can meet the demand of the automobile rear axle assembly for exhaust in the normal driving state, ventilation gaps can be automatically closed when an automobile fords water so as to prevent the water from entering the vent valve and meet the demand of the automobile for fording the water, and the automobile waterproof vent valve is simple in structure and very good in practicability.

Description

technical field [0001] The invention relates to a valve body for an automobile, in particular to an automobile waterproof ventilating valve. Background technique [0002] On the automobile rear axle assembly, the breather 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. The existing vent valve structure is mostly composed of vent valve body, vent valve cap, rubber gasket and spring. The vent valve cap is set on the vent valve body and connected with the vent valve body by riveting. The rubber gasket is compressed by the spring. On the breather valve body, 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 spring pressure, the rubber gasket is lifted u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K24/00F16K31/20
CPCF16K24/00F16K31/20
Inventor 张伟
Owner GREAT WALL MOTOR CO LTD