Patent ID: 7052400
Filing Date: 2006-05-30
Classification: F16D,Y10S

Abstract:
1. A constant velocity universal joint comprising: an outer joint member having an inner periphery provided with three axial track grooves, axial roller guideways being arranged on both sides of each of the track grooves; a tripod member having three radially-projecting trunnions; and a roller assembly mounted on each of the trunnions of the tripod member, the roller assembly being capable of tilting movement with respect to the trunnion and having a roller to be guided along the roller guideways in directions parallel to the axis of the outer joint member, wherein at least one component part of the joint is limited to a predetermined range in softening resistance characteristic value (R), wherein the roller assembly includes the roller to be guided by the roller guideway, and a support ring mounted on an outer periphery of the trunnion so as to support the roller rotatably; the support ring has a cylindrical or conical inner periphery, and the outer periphery of the trunnion is shaped convex arc in longitudinal section and formed, in cross section including a center of the convex arc, to make contact only with the inner periphery of the support ring in a direction perpendicular to the axis of the joint, wherein a clearance is formed between the outer periphery of the trunnion and the inner periphery of the support ring in an axial direction of the joint.