| 摘要 |
<P>PROBLEM TO BE SOLVED: To disconnect power transmission at prescribed torque without causing fatigue rupture. <P>SOLUTION: An inner ring 17a of a first one-way clutch 17 and an inner ring 18a of a second one-way clutch 18 are held between a step part 22b and a torque limiter part 19. The inner ring 17a and the inner ring 18a are fixed to a shaft 22 by axial force generated when the torque limiter part 19 is fastened to the shaft 22. A rupture part 19e where tensile strength due to axial force when the torque limiter part 19 is fastened to the shaft 22 is smaller than at other parts is provided in the torque limiter part 19. Stress generated at the torque limiter part 19 thus becomes axial force generated due to the fastening torque in assembling and axial force generated in accordance with the fastening torque. Almost no stress is thus generated by transmission torque. Stress generated at the rupture part 19e thus has almost no fluctuation, thereby fatigue rupture is hard to be generated. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
