| 摘要 |
PROBLEM TO BE SOLVED: To control change-over between the transmission and the interruption of rotating torque without using an electromagnetic clutch. SOLUTION: This rotation transmitting device comprises first and second inner rings 10, 20, an outer ring 30 arranged outside the first and second inner rings 10, 20, a plurality of pairs of rollers 40a, 40b arranged in wedge spaces Ma, Mb between each of the first and second inner rings 10, 20 and the outer ring 30 in an engageable/disengageable manner, a cage connected to the second inner ring 20 and having pockets for storing the rollers 40a, 40b, a first spring 60 inserted between each of the pairs of rollers 40a, 40b for energizing the rollers 40a, 40b in the direction of engaging them in the wedge spaces Ma, Mb, and a second spring 70 for rotating the second inner ring 20 relative to the first inner ring 10 in one direction to energize the roller 40b laid between the second inner ring 20 and the outer ring 30 in the wedge space Mb in the direction of separating it. Herein, a switch 80 is provided for thrusting the second inner ring 20 against the elastic force of the second spring 70 to engage the roller 40b in the wedge space Mb and for separating the roller 40b in the wedge space Mb with one-directional rotation of the second inner ring 20 due to the elastic force of the second spring 70 during the operation of centrifugal force. COPYRIGHT: (C)2008,JPO&INPIT
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