| 摘要 |
This is a magnetic actuator including a mobile magnetic portion ( 20 ), a fixed magnetic portion ( 10 ) provided with at least two attraction areas ( 11, 12 ) for the mobile magnetic portion ( 20 ), and means ( 30 ) for triggering the displacement of the mobile magnetic portion ( 20 ), the mobile magnetic portion ( 20 ) being in levitation when it is not in contact with an attraction area ( 11, 12 ). The mobile magnetic portion ( 20 ) includes a magnet-based part ( 200 ) with reduced magnet weight, this part ( 200 ) having an overall volume, and a mass which is less than the one it would have if its overall volume was totally occupied by the magnet.
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