| 摘要 |
PURPOSE:To reduce the power consumption of coils by a method wherein the pole part on the opposite side of the fixed core located on a movable core and the tip pole part of a core frame corresponding to said pole part are magnetically coupled using an iron piece which makes a pivotal movement in accordance with the shifting of the movable core. CONSTITUTION:Under the non-excited state of a coil 12, the fixed gap G is maintained between a movable core 15 and a fixed core 14. When the coil 12 is excited, a magnetic flux runs on the movable core 15, the fixed core 14, a core frame 10, an iron piece 18, and the movable core 15, and the movable core 15 is attracted to the fixed core 14. At this time, the iron piece 18 is pivotally moved in clockwise direction by the movable core 15 the tip magnetic part 10c of the iron frame 10 as the center point, and a movable insulated stand 16 is moved to the direction reverse to the movable core 15. As a result, the movable contact point 25a on the normally opened side is pressed to a fixed contact point 21a, and the movable point 25b is separated from a fixed contact point 21b. When the coil 12 is brought in a non-excited state, the movable insulated stand 16 and the iron piece 18 are pivotally moved in the direction reverse to the above-mentioned case by the spring force of a return spring 19, and everything is returned to the original condition. |
