Tripod constant velocity universal joint

Abstract

The invention relates to a tripod constant velocity universal joint in which only journal surfaces of leg shafts can restrain the position of needle rollers relative to the axial direction. In the tripod constant velocity universal joint, a groove (2) capable of receiving the needle rollers (6) and functioning as a rolling surface for the needle rollers (6) is formed on the outer peripheral surface of a leg shaft (1) in the circumferential direction of the leg shaft. A semisolid or solid lubricant having the consistency number 0, 1, or 2 assists the needle rollers (6) to be retained and aligned in the groove (2).

Description

technical field [0001] The invention relates to a tripod type constant velocity universal joint. Background technique [0002] Usually, constant velocity universal joints (three-leg type constant velocity universal joints), such as Figure 11A with Figure 11B As shown, an outer joint member 51, a tripod member 52 as an inner joint member, and a roller 53 as a torque transmission member are main components (see Patent Document 1). [0003] The outer joint member 51 is composed of an integrally formed mouth portion 54 and a stem portion 55 . The mouth portion 54 is in the shape of a cup with one end open, and track grooves 56 extending in the axial direction are formed at three equal parts in the circumferential direction of the inner periphery. The mouth 54 is viewed from the cross section ( Figure 11B ), it is a non-cylindrical shape in which large diameter portions 54a and small diameter portions 54b alternately appear. That is, the nozzle 54 forms the three track gro...

AI Technical Summary

Problems solved by technology

[0010] However, in position control using a locator and a retaining ring, in addition to the cost of these parts, forming a groove for the retaining ring on the shaft requires processing costs, resulting in an increase in cost.

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