| 摘要 |
<p>A constant velocity universal joint shaft, capable of suppressing a rotational backlash when incorporated in the constant velocity universal joint (1), and improving the assembly efficiency as well as reducing the manufacturing cost, is to be provided. The present invention relates to the constant velocity universal joint shaft (14) having a spline that fits an inner race (7) of the constant velocity universal joint. The shaft includes a shaft body (16) with a spline (15) formed thereon, and a yoke portion (18) with a ring-shaped fitting portion (17). The shaft body (16) and the yoke portion (18) are integrally formed of medium carbon steel. By a pressing force of a pressing member the fitting portion (17) of the yoke portion (18) is tightened, so that such fitting portion (17) fits a shaft external to the joint. In the constant velocity universal joint (1), the pressing member (38) and an abutment member (39) are elastically butted via an elastic member (40), so that a ball constantly remains in contact with a raceway (3) of an outer member (4) and a raceway (6) of an inner member (8).</p> |
