| 摘要 |
A crossed groove stroking constant velocity universal joint (10) including inner and outer joint members (12,14) having inner and outer ball grooves (40A-40F,46A-46F) defining a plurality of crossed pairs and a plurality of spherical bearing balls (16A-16F) seated in respective ones of the crossed pairs of inner and outer ball grooves (40A-40F,46A-46F) with predetermined running clearance between the grooves and the bearing balls (16A-16F). The bearing balls (16A-16F) are confined by the crossed pairs of ball grooves (40A-40F,46A-46F) and by a ball cage (18) between the inner and outer joint members (14,16) to the homokinetic plane of the universal joint for constant velocity operation. Each of the outer ball grooves (46A-46F) is circumferentially offset relative to the inner ball groove (40A-40F) paired therewith by about the running clearance (52) so that each bearing ball (16A-16F) rolls against only one side of each ball groove (40A-40F,46A-46F) for minimizing stroke loads. Adjacent pairs of outer ball grooves (46A-46F) are circumferentially offset in opposite directions relative to the inner ball groove (40A-40F) paired therewith for zero angular lash torque transfer between the inner and the outer joint members (12,14) in either direction of rotation of the universal joint (10). <IMAGE> |
