Constant velocity joint

摘要

A constant velocity joint assembly has a fixing member connected to a body of an automobile. A flange member comprises a bore portion and a flange portion of the flange member is connected to a wheel of the automobile. An outer joint member (1) has a mouth portion and a stem portion. The mouth portion has eight axially extending curved guide grooves (1b) formed in a spherical inner surface (1a) thereof. The stem portion is connected to the bore portion of the flange member. An inner joint member (2) has eight axially extending curved guide grooves (2b) formed in a spherical outer surface (2a) thereof. <??>Eight ball tracks are defined between the guide grooves (1b) of the outer joint member (1) and said guide grooves (2b) of the inner joint member (2) corresponding there to. All of the ball tracks are enlarged in wedge form in one sense of the axial direction. Eight torque transmitting balls (3) are disposed in said eight ball tracks. A cage (4) has a plurality of pockets (4c) for storing said torque transmitting balls (3). A bearing has double-row rolling elements rotatably supporting the rotation of the flange member with respect to the fixing member, the bearing being axially disposed between the flange portion of the flange member and the mouth portion of the outer joint member (1). <IMAGE> <IMAGE>