| 摘要 |
<p>PURPOSE:To provide the title electromagnet device in high magnetism efficiency having excellent attraction for a movable iron piece. CONSTITUTION:The title electromagnet device is provided with a yoke 2 in almost L-sectional shape, a pair of iron cores 4, 5 respectively engaged with permanent magnets 7 as tublar bodies freely rotatably supported by upper part of both iron cores 4, 5 jointly provided on the horizontal part 2c of the yoke 2 having the same polarity in the same direction along the uprightly disposed direction in the almost central part, a coil 9 continuously wound around respective iron cores 4, 5 in different winding directions as well as a movable iron piece 15 having one end 16 sucking at and separating from the suction surface 2b of the yoke 2 and the other end 17 driving a contact opening and closing mechanism. In such a constitution, when the coil 9 is impressed with a potential, an AC magnetic induction flux is excited in the gap between the movable iron piece 15 and the iron cores 4, 5 while exciting a DC magnetic induction flux in the gap between the movable piece 15 and the yoke 2.</p> |
