| 摘要 |
PURPOSE:To reduce a power amount supplied to a turn-on coil and a turn-on auxiliary switch by using an electric motor equipped with a reduction gear device and capable of rotating in both normal and reverse directions. CONSTITUTION:When power is supplied to an electric motor M and a cam C is driven with the motor M, a waved groove S formed on the cam C moves over the preset breadth. Thus, the upper end of a main lever L in contact with the lower side of a selector lever L0 with the lower end coupled to the groove S and an intermediate section journalled to a shaft S0, is caused to smoothly slide in a left direction as shown by a dotted line in the illustration. When the upper end of the lever L passes the vicinity of the shaft S0, the selector lever L0 elastically presses a switch S1 through the springing motion of two leaf springs S' and S'', and closes the contact of the switch S1. On the other hand, a switch S2 is thereby opened and the upper end of the lever L holds the switch S2 in a close state, in conjunction with the action of the springs S' and S''. According to this construction, a power-on value can be kept small. |
