| 摘要 |
PROBLEM TO BE SOLVED: To provide a reverse input cutoff clutch which is inhibited from returning to a lock state once again immediately after the lock state is released.SOLUTION: A clutch 70 comprises rollers 80a, 80b which are arranged between an internal peripheral face of an outer ring 77 and an external peripheral face of an output shaft 74, and a spring 81 for energizing the rollers 80a, 80b. An input shaft includes pressing parts 73a, 73b and 73c which press the rollers 80a, 80b. There is formed a lock part 86 in which an interval between the internal peripheral face of the outer ring 77 and the external peripheral face of the output shaft 74 gradually becomes narrow toward one direction along a circumferential direction. Each of the pressing parts 73a, 73b and 73c has a first end part 82a which presses one roller 80a in direction at a side opposite to one direction, and a second end part 82b at a side opposite to the first end part 82a. The spring 81 is arranged between the first end part 82a and the roller 80a.SELECTED DRAWING: Figure 8 |
