| 摘要 |
PURPOSE:To simplify the construction by switching a power source, a control rectifier by clock or counterlock rotation of a lever, and connecting a changeover switch which is temporarily interrupted at the input and output at the intermediate and a motor in series. CONSTITUTION:When an electric pulse is inputted to the gate 12a of an SCR12, a motor 13 rotates normally to drive a sun gear 2a. When a load 1 moves in the prescribed stroke and is suppressed to move, a clockwise torque of a lever 6a increases to exceed the elastic force by a centerover spring 10, the lever 6a rotates clockwise, and contacts a contact pin 9b. At this time, a contact pin 8a pushes and slides a movable element 7a to switch the switch 7. The SCR12 is inverted to the interrupted state at the switching time. Then, when an electric pulse is again inputted to the gate 12a of the SCR12, the motor 13 and the load 1 rotate reversely. |
