| 摘要 |
PURPOSE:To achieve a simple construction, easy positioning, quick response, and a large output by a method wherein the coils of a stationary electromagnets provided near and opposed to a movable iron cores furnished oscillating disk are energized by a half wave current applied forwards and then reverse. CONSTITUTION:Movable iron cores 4a-4d are provided on the circumference of a oscillating disk 2 fixed on a driven shaft 1. Stationary iron cores 15a1-15d1 are located respectively opposed to the front, rear and flank sides of a movable cores 4a-4d arranged on the driven shaft 1. Placed on the front and the rear end of the driven shaft 1 of the oscillating disk 2 are spiral springs 7. A key of a spring 7 is fixed to the driven shaft 1 and the other to a side 10a or 10b of the outer shell A1. When a half wave current is applied to the coils 15a2-15d2, alternately forwards and then reverse, the driven shaft 1 continues oscillating, thanks to the electromagnetic pull generated between the movable iron cores 4a-4d and the stationary iron cores 15a1-15d1 and to the resilience of the spiral springs 7. |
