Patent ID: 8568245
Filing Date: 2013-10-29
Classification: F16D,Y10S

Abstract:
1. A fixed type constant velocity universal joint, comprising: an outer joint member including an inner surface provided with a track groove having a bottom surface being a circular arc surface; an inner joint member including an outer surface provided with a track groove having a bottom surface being a circular arc surface; a plurality of torque transmitting balls each arranged in a ball track formed of a pair of the track groove of the outer joint member and the track groove of the inner joint member; and a cage interposed between the inner surface of the outer joint member and the outer surface of the inner joint member, for retaining the plurality of torque transmitting balls, wherein: a curvature center of the track groove of the outer joint member and a curvature center of the track groove of the inner joint member have an offset of 0 in an axial direction; the track groove of the outer joint member and the track groove of the inner joint member, which are tilted in opposite directions from each other with respect to an axis line, are alternately formed in a circumferential direction; and the outer surface of the inner joint member is a spherical surface which is to be brought into sliding contact with an inner spherical surface of the cage, and the inner surface of the outer joint member is a cylindrical surface.