| 摘要 |
PURPOSE: To improve power reduction and safety and endurance for persons and things by connecting a timer circuit and a door closing switch controlling the start of drive and drive time to a speed reducing drive circuit connected in parallel to a closed door drive circuit. CONSTITUTION: A speed reducing drive circuit D, D, L is connected in parallel to a closed door drive circuit C, L supplying single-phase AC to a second winding M2 of a single-phase motor M when closing a door, and a timer circuit T, L and a door closing switch SW controlling the start of drive and drive time are connected to this circuit D, D, L. And at the final stage of the door closing operation, the supply of single-phase AC from the closed door drive circuit C, L to the second winding M2 is stopped, and the speed reducing single- phase AC can be supplied in configuration until the end of door closing to the second winding M2 by the speed reducing drive circuit D, D, L after the elapse of a predetermined time or, if the door closing operation is blocked in the middle, it is supplied only for a predetermined time. |
