| 摘要 |
PURPOSE:To set a delay angle of a clutch arbitrarily and stably by deflecting energizing force of elastic body which energizes an engaging piece which rolls on the cylindrical surface in the direction toward the cylindrical surface. CONSTITUTION:A holder 5 is provided between a cylindrical surface 3 which rotates and a cam surface 4 which forms wedge-shaped space toward the cylindrical surface 3. An engaging roller 7 which rolls on the cylindrical surface 3 and an elastic body 8 which energizes the engaging roller 7 are built in the holder 5. Energizing force of the elastic body 8 is deflected in the direction toward the cylindrical surface 3. Since the engaging roller 7 is pressed on the cylindrical surface 3 due to energizing force of the elastic body 8, the engaging roller 7 rolls and moves on the cylindrical surface 3 in accordance with the movement of the cylindrical surface 3 when it rotates. Thus, it is possible to set a delay angle arbitrarily by regulating travel amount of the engaging roller 7. |
