Mitsubishi Electric Corporation

Nobuo Kojima

Kazuhiko Baba

Hitoshi Kawaguchi

Kazuhiro Nakane

Toyoshi Nomura

Kazuhikio Baba

An object is to provide an electromagnetic actuator that is highly resistant to corrosion and also capable of having high suction power, even in a condition where part of the electromagnetic actuator touches a corrosive liquid. An electromagnetic actuatoraccording to this invention is incorporated into a device using a corrosive liquid. The electromagnetic actuatoris characterized by including a magnetic pole piece; an outer yoke; a bottom yoke; a bobbin coil; a stepped portionthat is formed on an outer surface of the outer yoke; a waterproof portionthat prevents the corrosive liquidfrom entering at least where the bobbin coiland the magnetic pole pieceare; a movable platethat is placed in the corrosive liquidto form a magnetic circuit together with the magnetic pole piece, the outer yoke, and the bottom yoke, The movable plateis stored in a spacecreated either in the electromagnetic actuatoror between the device using the corrosive liquidand the electromagnetic actuator. The outer yokeis incorporated into the device using the corrosive liquid, on a reduced diameter side from the stepped portion

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Shizuoka, Japan

Nobuo Kojima