Patent ID: 6454655
Filing Date: 2002-09-24
Classification: F16D,Y10S

Abstract:
A constant velocity universal joint having a cylindrical outer member which is connected to a first transmission shaft and which is provided, on its inner wall surface, with a plurality of guide grooves separated from each other by predetermined spacing distances and extending along an axial direction, and an inner member which is connected to a second transmission shaft and which is inserted into an open inner space of said outer member, said constant velocity universal joint comprising:trunnions each of which expands toward said guide groove and each of which is provided with a spherical surface along a circumferential direction; first annular members each of which is externally fitted to said trunnion and each of which has a recess having a spherical surface formed on an inner circumferential surface to make surface-to-surface contact corresponding to said spherical surface; second annular members each of which is externally fitted to said first annular member via a bearing member and each of which is provided relatively displaceably with respect to said first annular member and further being displaceable with respect to said guide grooves along an axial direction of said trunnion; and a pair of mutually opposing cutouts, each of which has a circular arc-shaped configuration and each of which continues to said recess having said spherical surface are formed on said inner circumferential surface of said first annular member without extending to an outer circumferential surface of said first annular member.