PROBLEM TO BE SOLVED: To provide a constant velocity joint reduced in weight and operating noise, eliminating the need of filling an annular space with grease, and capable of maintaining the constant velocity with a rotating drive force.;SOLUTION: A female side joint 120 used for this constant velocity joint is formed by integrating a cup part 121, a shaft part 127, and ribs 128 joining them to each other with a same resin material. With this structure, the weight of the female side joint 120 is reduced more than that of the conventional structure in which the cup part is made of a metal material. Since the cup part 121 is made of the resin material, even if the annular space of the cup part 121 is not filled with grease, the operating noise can be reduced more than before while smoothly rotating the female side joint 120 and a male side joint engaged with the female side joint. The inclination of the cup part 121 from the axial direction due to the deformation of the cup part 121 is suppressed by functioning the ribs 128 as the beams of the cup part 121. Consequently, the constant velocity of the joint is maintained.;COPYRIGHT: (C)2007,JPO&INPIT
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