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Ventilation plug for rear axle of automobile

A technology for automobile rear axles and vent plugs, applied to axles, wheels, vehicle parts, etc., can solve problems such as oil leakage, oil temperature rise, etc., achieve the effect of air pressure balance and increase flow

Inactive Publication Date: 2012-05-02
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The vent plug has a relatively simple structure and low cost. It can balance the air pressure inside and outside the axle housing and prevent external muddy water and dust from splashing into the inside of the axle housing. After the oil vapor condenses on the vent plug, there will still be oil leakage

Method used

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  • Ventilation plug for rear axle of automobile
  • Ventilation plug for rear axle of automobile
  • Ventilation plug for rear axle of automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] as attached figure 1 to the attached Figure 4 As shown, the automobile rear axle ventilation plug is installed on the rear axle housing, its main body is a plug body 2 with a through hole in the center, the top of the plug body 2 is a plug cover 1, the lower end of the plug body 2 is a claw 3, and Claw 3 is a four-petal claw shape, and the vent plug is clamped on the round hole of the rear axle housing through the claw 3, and the claw 3 and the round hole are interference fit. On the top side wall of the plug body, there is a vent hole 5 connecting the inner cavity of the plug body and the external atmosphere. Two diaphragms 4 are arranged in the central through hole of the plug body 2, and the diaphragm 4 transversely blocks the central through hole, but the diaphragm 4 A vent 6 is left on the local edge of 4, and the diaphragm 4 is arranged obliquely in the central through hole of the plug body and distributed up and down. Staggered settings.

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PUM

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Abstract

The invention relates to a ventilation plug for a rear axle of an automobile, which is mounted on an axle housing of the rear axle. A main body of the ventilation plug is a plug body with a through hole in the center, a plug cover is disposed on the top of the plug body, a vent hole is arranged on a side wall of the top of the plug body, an inner cavity of the plug body is communicated with the external atmosphere via the vent hole, membranes are disposed in the central through hole of the plug body and transversely block the central vent hole, but ventilating openings are reserved at local edges of the membranes. The ventilation plug can balance internal pressure and external pressure of the axle housing, prevents external mud and dust from splashing into the axle housing and prevents oil seepage and leakage after oil steam is condensed at the ventilation plug.

Description

technical field [0001] The invention relates to a vent plug structure of an automobile rear axle. Background technique [0002] In order to prevent the external muddy water and dust from splashing into the inside of the axle housing, the rear axle of the car will cause early wear of the gears, and prevent the internal pressure of the axle housing from increasing as the internal oil temperature rises, causing oil leakage at the half shaft oil seal and the main shaft oil seal. Or set a vent plug on the main reducer shell. At present, most of the rear axle vent plugs are rubber parts, for example, a kind of automobile rear axle vent plug (authorized notification number is CN 201346961Y), which is an integral rubber part, with a plug body in the middle, a plug cover at the top, and a plug body in the center. It is a vent hole, and the upper wall of the vent hole is provided with a normally closed valve port connecting the interior of the axle housing with the outside atmosphere...

Claims

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Application Information

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IPC IPC(8): B60B35/00
Inventor 董谊锋曾波陈远娟
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD