Patent ID: 8466761
Filing Date: 2013-06-18
Classification: H01F,H01H

Abstract:
1. A polarized electromagnet comprising: a spool around which an exciting coil is wound; a movable plunger penetrating the spool; an interior yoke fixed on an outer side of the spool; an exterior yoke disposed to maintain a predetermined interval on an outer side of the interior yoke; and a permanent magnet disposed between the interior yoke and exterior yoke; wherein the exterior yoke has a pair of end plate portions opposing two ends of the spool, and a linking plate portion linking the pair of end plate portions; and the interior yoke has a first opposing plate portion opposing the linking plate portion of the exterior yoke, and second opposing plate portions opposing one end plate portion of the exterior yoke, and the first opposing plate portion and the second opposing plate portion are linked without coming close to the exterior yoke.