发明名称 |
ELECTROMAGNETIC CONTACTOR |
摘要 |
The electromagnetic contactor has a pair of fixed contacts disposed to maintain a predetermined interval and a movable contact disposed so as to be attachable to and detachable from the pair of fixed contacts, and an electromagnet unit that drives the movable contact. The electromagnet unit has a magnetic yoke enclosing a plunger drive portion, a movable plunger having a leading end protruding through an aperture formed in the magnetic yoke and biased by a return spring, an annular permanent magnet fixedly disposed so as to enclose a peripheral flange portion formed on a protruding end side of the movable plunger and magnetized in a direction in which the movable plunger can move, and an auxiliary yoke disposed on the annular permanent magnet at a side opposite to that of the magnetic yoke and regulating a movement of the peripheral flange portion of the movable plunger. |
申请公布号 |
US2015054606(A1) |
申请公布日期 |
2015.02.26 |
申请号 |
US201414505009 |
申请日期 |
2014.10.02 |
申请人 |
FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD. ;FUJI ELECTRIC CO., LTD. |
发明人 |
NAKA Yasuhiro;TAKAYA Kouetsu;SUZUKI Kenji |
分类号 |
H01H1/54 |
主分类号 |
H01H1/54 |
代理机构 |
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代理人 |
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主权项 |
1. An electromagnetic contactor, comprising:
a pair of fixed contacts disposed to maintain a predetermined interval and a movable contact disposed so as to be attachable to and detachable from the pair of fixed contacts; and an electromagnet unit that drives the movable contact, including: a magnetic yoke enclosing a plunger drive portion, a movable plunger having a leading end protruding through an aperture formed in the magnetic yoke, the movable plunger supporting the movable contact via a connecting shaft and being urged by a return spring, an annular permanent magnet fixedly disposed so as to enclose a peripheral flange portion formed on a protruding end side of the movable plunger and magnetized in a direction in which the movable plunger can move, and an auxiliary yoke disposed on the annular permanent magnet at a side opposite to that of the magnetic yoke and regulating a movement of the peripheral flange portion of the movable plunger, wherein the auxiliary yoke includes a stepped plate portion formed in a central portion of a flat plate portion to protrude and having an aperture through which the connecting shaft is inserted. |
地址 |
Tokyo JP |