Electromagnetic device and electromagnetic relay equipped with electromagnetic device
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United States of America
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Mar 15, 2022
Grant Date -
Jan 2, 2020
app pub date -
Sep 13, 2019
filing date -
Sep 13, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
An electromagnetic device includes a fixed iron core through which a first magnetic flux flows, a movable iron core that reciprocates to separate from the fixed iron core by a predetermined gap when a current applied to a coil, which generates the first magnetic flux, is stopped and move to the fixed iron core by an attractive force when the current is applied to the coil. The electromagnetic device also includes a permanent magnet that generates a second magnetic flux. The opposed surface of the fixed iron core and the opposed surface of the movable iron core may be opposed in a reciprocating direction of the movable iron core. The permanent magnet may be attached to the fixed iron core such that a magnetized surface of the permanent magnet is opposed and exposed to the opposed surface of the movable iron core.
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