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1. 发明公开

EP0380693A4 PLUNGER TYPE ELECTROMAGNET 失效
标题翻译：柱塞式电磁铁
公开(公告)号：EP0380693A4
公开(公告)日：1991-01-16
申请号：EP89908518
申请日：1989-07-25
申请人： MITSUBISHI MINING & CEMENT CO., LTD.
发明人： UETSUHARA, TOKIO , ANDO, YUICHI , IIO, KENJI , KINOSHITA, KENICHIRO
IPC分类号： H01F7/122 , H01F7/13 , H01F7/16 , H01F7/08 , F16K31/06
CPC分类号： H01F7/13 , H01F7/122 , H01F7/1607 , H01F7/1615 , H01F7/1638 , H01F7/1646
摘要： An attraction blade plate is disposed on a plunger of a plunger type electromagnet to improve the shape of the plunger and the shape of a fixed core, or a cylinder equipped with a single flange and made of a magnetic material is fitted to the axial-direction end portion of a coil bobbin. According to each technical means, the change rate of permeance of a magnetic path at the time of attraction can be made great and high sensitivity of the electromagnet can be accomplished. Attraction retention force is controlled by adjusting the area of the contact surface between the fixed core and a movable core. A permanent magnet is shaped in a toroidal shape and the direction of magnetization is formed in the direction of the thickness of the toroidal shape. Accordingly, magnetization of the permanent magnet becomes easier and the number of components can be reduced. In this manner, a compact and light-weight electromagnet can be mass-produced.
摘要翻译：在柱塞式电磁铁的柱塞上设置吸引叶片板，以改善柱塞的形状和固定芯的形状，或者将配备有单个法兰并由磁性材料制成的圆柱体装配到轴向方向线圈骨架的端部。根据各种技术手段，可以使吸引时磁路的磁导率的变化率变大，并且可以实现电磁铁的高灵敏度。吸引力保持力通过调整固定铁心与可动铁心之间的接触面的面积来控制。永磁体成形为环形，并且磁化方向形成在环形的厚度方向上。因此，永磁体的磁化变得更容易并且部件的数量可以减少。以这种方式，可以大量生产紧凑且重量轻的电磁体。

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