Ventilation plug oil baffle structure for driving axle and driving axle

Abstract

The invention provides a ventilation plug oil baffle structure for a driving axle and the driving axle. The ventilation plug oil baffle structure for the driving axle comprises a ventilation plug seat for fixing a ventilation device, and a ventilation plug inner baffle and a ventilation plug outer cover which are arranged at the bottom of the ventilation plug seat, wherein the ventilation plug seat, the ventilation plug inner baffle and the ventilation plug outer cover are connected together; the ventilation plug inner baffle is located in the ventilation plug outer cover; the ventilation plug inner baffle comprises a bottom baffle and a side baffle; the upper side of the side baffle is connected with the ventilation plug seat and the ventilation plug outer cover; a vent hole is formed in the side baffle; a vent hole is also formed in the position, opposite to the bottom baffle, on the ventilation plug outer cover. The oil baffle has the advantages of simple structure, obvious oil retaining effect, good leakage prevention effect, ventilation reliability and the like.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a drive axle vent plug oil baffle structure and a drive axle with the oil baffle structure. Background technique [0002] During the driving process of the vehicle, the temperature of the gear oil inside the drive axle will continue to change. Generally, when the load torque on the internal gear of the drive axle is greater, the temperature of the gear oil will be higher, resulting in the drive axle housing. The air pressure in the body increases. Under high pressure, the sealing performance of each oil seal rubber seal of the drive axle will decrease, resulting in the risk of oil leakage at the oil seal. In order to ensure the balance of gas pressure inside the drive axle, it is usually necessary to design ventilation devices such as a one-way valve or a vent pipe on the drive axle housing to ensure the balance of the gas pressure inside the drive axle housing. [0003] Th...

AI Technical Summary

Problems solved by technology

[0003] The gear oil in the drive axle will be splashed and stirred due to the operation of the gears. The faster the vehicle travels, the faster the gears run, and the greater the degree of agitation of the gear oil. Therefore, the center of the vent plug seat welded on the drive axle housing Oil droplets will be splashed on the hole, and under high pressure, the oil droplets will seep out from the breather installed on the breather plug seat, resulting in oil leakage of the drive axle.

[0004] In prior art, for example, in figure 1 The drive axle A shown in the technical solution has only the first-stage baffle structure C at the vent plug seat B to block oil. This baffle structure C can only block the gear oil splashed from the side direction, while the gear oil splashed from the bottom direction It cannot be completely covered, and has certain limitations, especially when the vehicle is running at high speed, the oil blocking effect is poor, and some gear oil will still seep from the breather D

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