Patent ID: 6682434
Filing Date: 2004-01-27
Classification: F16D

Abstract:
A constant velocity universal joint comprising:an outer member having guide grooves on an inner circumferential surface thereof; a plurality of trunnions each having a continuous spherical surface without any planar surfaces in a circumferential direction around an axis thereof, said trunnions expanding toward said guide grooves; and inner rollers each having a spherical recess adapted to receive said spherical surface so that said inner rollers are externally fitted to said trunnions, said inner roller further comprising a chamfered portion formed by an inclined surface inclined at an angle not less than an assembling angle &thgr;, said inclined surface extending from a starting point defined by a crossing point of said spherical recess of said inner roller and a short radius r of an elliptic cutout formed on said inner roller.