| 摘要 |
PURPOSE:To obtain a driving device which is low-priced and produces little noise of an electric motor by independently driving a plurality of loads by one semiconductor electric motor and a speed reduction gear. CONSTITUTION:When an electric current is applied to a solenoid device N and the supply of an electric current to an exciting coil 19 is cut off, a rotary shaft 24 and an idle wheel 38a are separated from each other, and an idle wheel 38b is pressed to the shaft, so that a gear 36b is rotated in direction of an arrow F, gears 17, 16 are rotated in directions of arrows G, H, and a gear 36a is rotated in the opposite direction to an arrow E. On the other hand, when an electric current is applied to the exciting coil 19, and the supply of an electric current to the solenoid device N is cut off, the rotary shaft 24 and the idle wheel 38a are pressed to each other, and the idle wheel 38b is separated from the shaft, so that the gear 36a is rotated in the direction of an arrow E, and gears 16, 17, 37b are rotated in the opposite direction to the arrows G, H, F. Thus, the gear 36a is rotated in the normal and reverse directions and plural sets of similar speed reduction mechanisms are provided to drive plural loads by using only one electric motor which is an expensive semiconduc tor electric motor. |
