Blind hole type half axle gear

Abstract

The invention discloses a blind hole type half axle gear. The half axle gear consists of a bevel gear, shoulders, an inner spline shaft hole and a left end surface, wherein the small end of the bevel gear is arranged on the left end surface; the big end of the bevel gear is connected with a right shoulder into a whole; the axial inner spline shaft hole which is formed integrally is formed in the left end surface of the gear to form a blind hole structure; and a cutter withdrawal groove is spaced between the inner spline shaft hole and the left end surface of the gear. By adopting the blind hole type half axle gear, the left end surface is used for radially supporting the small end of the bevel gear, so that the bending intensity and the yield strength of a gear root are greatly improved; the accident of damaging the gear is reduced; and more importantly, one end of the inner spline shaft hole is sealed by the right end surface of the gear, and an overflow channel which is formed in a fit clearance between the inner spline shaft and the matching spline is cut off by the blind hole structure, so that the problems that oil overflows outwards from the output end of the half axle gear and the oil loss is caused because the oil is leaked toward the outer side of the half axle gear of an automobile gear box are solved; and because of no leakage, an external environment of the automobile gear box is obviously purified.

Description

technical field [0001] The invention relates to a gear structure design, in particular, the invention relates to a side gear matched in an automobile gearbox. Background technique [0002] The differential is a key component in an automobile gearbox, and the differential outputs torque through two side gears. The side shaft gear is a kind of bevel gear, and its structural feature is that the small end of the bevel tooth faces outward, and the spline shaft hole is built in the center. The internal spline shaft hole of the side gear of the traditional structure is a through hole, which has a simple structure and is convenient for machining the spline shaft hole. The built-in gears of the automobile gearbox need a good lubricating environment. In order to prevent the lubricating oil in the gearbox from overflowing, each output end is equipped with a corresponding sealing structure. The side gears are no exception to have a shaft seal structure at the installation position. Al...

AI Technical Summary

Problems solved by technology

The leakage is not because the shaft seal between the side gear and the box is not tight, but because the internal spline hole of the side gear fits with the matching spline shaft. During operation, the built-in lubricating oil is easy to overflow from the matching gap, and the continuous oil spill will inevitably pollute Surrounding environment, deteriorating the running state of the car gearbox

In addition, there is still a structural defect in the side gear of the traditional structure, that is, the inner spline shaft hole of the through-hole structure makes the small end of the bevel tooth in a suspended position, which weakens the bending strength and yield strength of the tooth root here, and there are fractures. Tooth hazard

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