Title:
電磁アクチュエータ
Document Type and Number:
Japanese Patent JP6920096
Kind Code:
B2
Abstract:
An electromagnetic actuator in which magnetic force from a permanent magnet causes a stator core and a first plunger to attract each other, and electromagnetic force generated by energizing an electromagnetic coil causes a mover to resist against the magnetic force from the permanent magnet to move in an axial direction separating from a front end portion of the stator core, wherein a ring member provided on the mover is inserted in the axial direction into a hole portion provided in a bottom wall member of a yoke, and an overlap size between the ring member and the bottom wall member is increased when the mover moves relative to the stator core in a separating direction, so that a magnetism transmission quantity from the permanent magnet passing through an overlap portion between the ring member and the bottom wall member is inhibited from being reduced.
Inventors:
Toshiki Ogasawara
Application Number:
JP2017088470A
Publication Date:
August 18, 2021
Filing Date:
April 27, 2017
Export Citation:
Assignee:
Mikuni Corporation
International Classes:
H01F7/16; F01L9/21
Domestic Patent References:
| JP11210430A | ||||
| JP5029133A | ||||
| JP2017045950A | ||||
| JP6077046A | ||||
| JP47002311A | ||||
| JP59040774U | ||||
| JP6224031A |
Foreign References:
| US20150213936 | ||||
| CN104520947A | ||||
| US20130147583 | ||||
| US6313726 |
Attorney, Agent or Firm:
Koji Nagato