| 摘要 |
<p>PURPOSE:To obtain three states, forward rotation output, reverse rotation output and no output in a desired order by providing a shaking arm provided with plural engaging fingers locking a rotation support of a planet gear device. CONSTITUTION:When an engaging finger 9a of the shaking arm 9 releases a projection 10, an engaging finger 9b locks the projection 10 at the rear part and gives a counterclockwise forward rotation output to an output shaft 5 by meshing a planet gear 4 with an output gear 6. In shaking again the shaking arm 9 to the 1st position, the projection 10 is released from the engaging finger 9b. When the shaking arm 8 is in the 1st position in this case, an engaging finger 8a locks the projection 10. The planetary gear 4 meshes neither with the output gear 6 not with a reverse gear 7 at this position and a no output state is obtained. When a shaking arm 8 is shaken to the 2nd position next, the projection 10 is locked by an engaging finger 8b. The planetary gear 4 meshes with the reverse gear 7 at this position and a clockwise rotation is given to the output gear 6.</p> |
