| 摘要 |
<P>PROBLEM TO BE SOLVED: To implement stable sliding load, to prevent looseness in a direction of rotation, to transmit torque in highly rigid condition, and to prevent adhesion of an impression of a spherical rolling element. <P>SOLUTION: In a pair of axial grooves 3, 5 where the balls 7 are disposed with a plate spring 9 interposed, not only the balls 7 but also a needle roller 20 is disposed. Accordingly, when the excessive torque is input, the excessive torque acts mostly on the needle roller 20, hardly acting on the ball 7. Thus, no localized bearing pressure rise resulting from point press contact of the ball 7 is caused, and the adhesion of the impression of the ball 7 can be prevented. <P>COPYRIGHT: (C)2004,JPO |
