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Patent Searching and Data


Title:
ELECTROMAGNETIC ACTUATOR DEVICE AND SUSPENSION DEVICE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2022/163029
Kind Code:
A1
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.

Inventors:
HOSHI RYOSUKE (JP)
AOYAMA YASUAKI (JP)
ICHIMARU NOBUYUKI (JP)
Application Number:
PCT/JP2021/038197
Publication Date:
August 04, 2022
Filing Date:
October 15, 2021
Export Citation:
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Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
H02K41/03; B60G17/015
Foreign References:
JP2016092842A2016-05-23
JP2017041947A2017-02-23
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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