| 摘要 |
<p>PURPOSE:To secure such a clutch mechanism that functions positively, by constituting it so as to make a contact member move a support member against energizing force by an energizing device and to release the engaging relations between plural engaging members and a driving wheel. CONSTITUTION:Each of engaging members 13 and 14 forming respective engaging relations with a driving wheel 12 is energized in the right direction by each of springs 17 and 18 (a first energizing device). And, a driven wheel 15 is solidly rotated together with the driving wheel 12 via a support member 16 supporting these engaging members 13 and 14 free of slide motion. And, a contact member 22 is being energized to the left direction by a compression spring 23 (a second energizing device). When this contact member 22 is moved in the right direction, the engaged surface 22d comes into contact with a shaft 20 and engaged thereat. When the contact member 22 makes the support member 16 move in the left direction against energizing force of these springs 17 and 18 from the engaged position, the engaging relations between these engaging members 13 and 14 and the driving wheel 12 is released. In consequence, transmission/nontransmission of power is positively performed.</p> |
