Electromagnetic Actuator Device And Suspension Device Comprising Same

Abstract: The present invention provides an electromagnetic actuator device that makes it possible to reduce pulsation and improve thrust. This electromagnetic actuator device comprises a magnet part 20 and an armature 10 that moves relative to the magnet part 20. The armature 10 comprises a plurality of teeth 12 that are formed along the relative movement direction, a plurality of slots 15 that are formed between the plurality of teeth 12, a yoke 14 that connects the plurality of teeth 12, and a winding 13 that is wound in the plurality of slots 15. The magnet part 20 comprises a plurality of magnets 21 that are arranged along the relative movement direction and are opposite the plurality of teeth 12 with a gap therebetween. The relationship between the smallest cross-sectional area Sc1 of one tooth end part 12c of the armature 10 and the smallest cross-sectional area Sc2 of another tooth end part 12b is Sc1>Sc2, and the relationship between the smallest cross-sectional area Sc2 of the other tooth end part 12b and the cross-sectional area Sy of the yoke 14 in the direction that crosses the relative movement direction is Sc2=Sy.

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