A fixed end constant velocity joint

Abstract

The invention discloses a new fixed-end constant velocity universal joint, which includes a bell-shaped shell, a cage, a star sleeve and steel balls. The spherical center a' of the inner spherical surface of the bell-shaped shell is vertically displaced upwards based on the axis line and The connection line between the original center a and the center a' is located on the vertical center line of the great circle perpendicular to the axis line; the center b1' of the outer spherical surface of the cage is offset vertically downward based on the axis line and the original center b The connection line with the center of the sphere b1' is located on the vertical center line of the great circle perpendicular to the axis line, the center of the spherical surface b2' in the cage is offset vertically upward based on the axis line, and the original center of the sphere b and the center of the sphere b2' The connection line of is located on the vertical center line of the great circle perpendicular to the axis line; the center c' of the outer spherical surface of the star-shaped sleeve is offset vertically downward based on the axis line, and the connection line between the original center c and the center c' On the vertical centerline of a great circle perpendicular to the axis. This structure reduces the axial displacement between the parts, reduces the impact force between the parts, and prolongs the service life.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a novel fixed-end constant velocity universal joint. Background technique [0002] As an important part of the automobile transmission system, the combination of the universal joint and the transmission shaft constitutes the universal joint assembly. Among them, the universal joint that can keep the angular velocity of the driving shaft and the driven shaft equal is called a constant velocity joint. Constant velocity universal joints are divided into fixed type and telescopic type according to the working performance. In the prior art, the structure of the fixed-end constant velocity universal joint of the cage type is as follows: figure 1 The bell housing 1, cage 2, star sleeve 3 and steel ball 4 are shown. Such as figure 2 As shown, the center of the sphere in the bell-shaped shell 1 is a. Such as image 3 As shown, the center of the inner and outer spherical surfaces...

AI Technical Summary

Problems solved by technology

Although the structure takes into account the problem of radial and axial gaps in the universal joint, it is improved by the spherical pair composed of the inner wall of the bell shell and the outer wall of the cage and another set of spherical pairs composed of the inner wall of the cage and the outer wall of the star sleeve. , in order to make the contact stress of the star sleeve reach the same level as the contact stress of the bell-shaped housing, thereby reducing the movement and impact between the parts, but to a limited extent, the existence of the axial gap between the parts will cause the parts to produce The phenomenon of large axial displacement has not been substantially changed from structural improvements

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