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 代理人
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