| 摘要 |
A one-way clutch unit includes a one-way clutch and an unlocking member. The one-way clutch includes inner and outer races. Two pockets having wedge spaces having a wedge angle are formed between the inner and outer races. Several rolling elements are received in each pocket. The unlocking member includes an annular portion concentric with the inner race, and axially extending unlocking pieces each received in one of the pockets between the end of the pocket that faces the narrow ends of the wedge spaces having the wedge angle and the rolling elements. By externally actuating the unlocking member, the rolling elements are moved toward the wide ends of the respective wedge space having the wedge angle, thereby unlocking the clutch. Thus, it is possible to unlock the clutch and prevent transmission of torque to the output member while the input member is rotating in the forward direction. |
