Title:
電磁サスペンション
Document Type and Number:
Japanese Patent JP7403395
Kind Code:
B2
Abstract:
The present invention provides an electromagnetic suspension capable of suppressing interference with other components and devices, being mounted in a narrow space, and having a small thrust pulsation, a large thrust, and a high damping performance even for a high-frequency vibration source. An electromagnetic suspension of the present invention includes a linear motor that includes an armature and a permanent magnet portion, the armature including a winding and a magnetic body, the permanent magnet portion being disposed on an outer periphery of the armature and including a permanent magnet and a cylindrical magnetic body, and the armature and the permanent magnet portion being relatively linearly driven in the linear motor, in which a recess recessed from an outer peripheral portion of the cylindrical magnetic body and a protrusion protruding from the outer peripheral portion are disposed on the same circumference of the outer peripheral portion of the cylindrical magnetic body.
Inventors:
Yasuaki Aoyama
Ryosuke Hoshi
Nobuyuki Ichimaru
Ryosuke Hoshi
Nobuyuki Ichimaru
Application Number:
JP2020108633A
Publication Date:
December 22, 2023
Filing Date:
June 24, 2020
Export Citation:
Assignee:
Hitachi Astemo, Ltd.
International Classes:
F16F15/03; F16F15/06; H02K1/06; H02K33/00; H02K41/02
Domestic Patent References:
| JP2014167320A | ||||
| JP2002295580A | ||||
| JP2007274820A |
Foreign References:
| US20180250998 |
Attorney, Agent or Firm:
Polaire Patent Attorneys Corporation