Watertight device for drive shaft for vehicle

Abstract

A watertight device for a drive shaft for a vehicle may include a middle shaft, an inner shaft which is formed integrally with an outer end portion of the middle shaft and has a first gear serration portion formed on an outer diameter portion of the inner shaft, and an outer wheel of the drive shaft which has a second gear serration portion formed on an inner diameter portion thereof, in which a sealer seating groove may be formed in a neck portion in a rear of the first gear serration portion of the inner shaft, a sealer may be press-fitted and mounted into the sealer seating groove, and thereafter, an outer diameter of the sealer may be compressed by an inner diameter portion at an inlet side of the second gear serration portion in an inner diameter section of the outer wheel of the drive shaft.

Description

technical field [0001] The present invention relates to a waterproofing device for a drive shaft of a vehicle. More specifically, the present invention relates to a waterproof device for a drive shaft of a vehicle, which improves a waterproof structure for a drive shaft of a vehicle, thereby preventing corrosion, etc. . Background technique [0002] Generally, the drive shaft is an intermediate part that finally transmits the driving force generated by the engine / transmission to the road surface through the wheels, and is used to absorb rotational displacement and various types of displacements that occur when the vehicle is running, while being between the transmission and the wheels Transmits power without creating speed differentials. [0003] In particular, in high-performance FF vehicles (especially SUVs), a constant-length drive shaft is mainly used in consideration of various drive performances. [0004] The constant length type drive shaft has three parts, ie, a l...

AI Technical Summary

Problems solved by technology

[0011] First, high-performance vehicles, especially SUV vehicles, are often driven on unpaved roads, also known as off-road, so there is water, salt water, dirt, dust, etc. that enter the space between the inner shaft and the outer wheel of the drive shaft. There is a problem with the toothed part of the gear between the teeth, so that severe corrosion and rust occurs on the toothed part, and there is also a problem that it takes a lot of time and money to replace the drive shaft because of excessive rust adhesion

[0012] Second, in the case where rust occurs on the toothed part of the gear, when power is repeatedly transmitted through the toothed part of the gear, the wear of the toothed part of the gear is accelerated, and as a result, the vehicle may not be able to run

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