公开(公告)号：US20200006025A1

公开(公告)日：2020-01-02

申请号：US16570278

申请日：2019-09-13

申请人： PANASONIC INTELECTUAL PROPERTY MANAGEMENT CO., LTD.

发明人： Satoshi SAKAI ,  Katsuya URUMA

IPC分类号： H01H50/20 ,  H01H50/16 ,  H01H50/36 ,  H01H50/44 ,  H01H51/22 ,  H01H51/27

摘要： An electromagnetic device includes a coil, a fixed iron core, a movable iron core configured to reciprocate to separate from the fixed iron core by a predetermined gap when a current applied to the coil is stopped and move to the fixed iron core by an attractive force when the current is applied to the coil, and a permanent magnet. The permanent magnet is arranged so that the permanent magnet is opposed to the gap in a second direction perpendicular to a first direction and separated from the fixed iron core and the movable iron core with a space interposed therebetween. A direction of a second magnetic flux generated by the permanent magnet conforms to a direction of the first magnetic flux between opposed surfaces of the fixed iron core and the movable iron core.