| 摘要 |
In this track groove intersecting-type, fixed-type constant velocity universal joint (1), track grooves (7) of an outer joint member (2) form an arc shape, the center of curvature being the joint center (O), and are inclined in the circumferential direction with respect to the N-N axis of the joint, said direction of inclination being opposite that of the track grooves (7) adjacent in the circumferential direction, and track grooves (9) of an inner joint member (3) are formed mirror-symmetrical with the paired track grooves (7) of the outer joint member (2) with reference to the joint center plane (P) in a state in which the working angle is 0°. The track grooves (7, 9) of the two joint members (2, 3) have a length corresponding to the maximum working angle &thetas;max calculated from the propeller shaft, and surface treatment for decreasing the frictional resistance (sliding resistance) with the balls (4) is performed on the defining surfaces of the track grooves (7) of the outer joint member (2). |
