Patent ID: 7704149
Filing Date: 2010-04-27
Classification: F16D,Y10S

Abstract:
1. A fixed type constant velocity joint comprising: an outer member having an inner diameter surface formed with a plurality of track grooves; an inner member having an outer diameter surface formed with a plurality of track grooves; balls disposed in wedge-shaped ball tracks defined by the track grooves of the outer and inner members; a cage disposed between the inner diameter surface of the outer member and the outer diameter surface of the inner member for rotatably holding the balls; and a preloading mechanism in which either a pressing section for applying an elastic pressing force in an axial direction of the joint or a receiving section for receiving the pressing force from the pressing section is disposed in the cage, the other of the pressing section and the receiving section being disposed in the inner member, wherein a clearance between the inner member and the cage in the axial direction of the joint is greater than a clearance between the track grooves of the inner and outer members and the balls in the axial direction of the joint, and is 2.5-6.5 times as large as a track clearance between the track grooves of the inner and outer members and the balls in a radial direction of the joint.