| 摘要 |
PURPOSE:To prevent heating and seizure between a roller and a retainer. CONSTITUTION:Cylindrical guide faces 1b, 2b are provided at the ends of the raceway surface of an inner and an outer wheels 1, 2 so as to supportingly guide the guide legs 12a, 12b of a retainer 12. The center ring part 12c of the retainer 12 is opened so as to enable a roller 3 to go in/out vertically. Large clutch torque is thereby applied between the inner rotor 1 and the outer wheel 2. Even in the case of the roller 3 moving largely onto the large diameter side in the center axis direction, only the contact position between the roller 3 and the retainer 12 is moved without mutual interference between them so as to prevent heating and seizure between them. |
