Title:
MAGNETIC FORCE CONTROL DEVICE AND MAGNETIC BODY HOLDING DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/054629
Kind Code:
A1
Abstract:
The present invention relates to: a magnetic force control device for controlling magnetic force on a working surface by controlling an arrangement state of a freely rotating permanent magnet by means of a coil; and a magnetic body holding device using the same. The magnetic force control device according to one embodiment of the present invention comprises: a first pole piece, which has a working surface, is made of a ferromagnetic body, and comes in contact with the N pole of a permanent magnet; a second pole piece, which has a working surface, is made of a ferromagnetic body, and comes in contact with the S pole of the permanent magnet or a permanent magnet other than the permanent magnet; a rotary permanent magnet rotatably formed so as to achieve a first arrangement state in which the N pole is magnetically connected to the second pole piece and the S pole is magnetically connected to the first pole piece and a second arrangement state in which the N pole is magnetically connected to the first pole piece and the S pole is magnetically connected to the second pole piece; and a coil wound around the first pole piece and/or the second pole piece, wherein a current to be applied to the coil is controlled such that the rotary permanent magnet is rotated, thereby allowing switching between the first arrangement state and the second arrangement state, and thus magnetic forces on the working surfaces of the first pole piece and the second pole piece are controlled.
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Inventors:
CHOI TAE KWANG (KR)
Application Number:
PCT/KR2018/008833
Publication Date:
March 21, 2019
Filing Date:
August 03, 2018
Export Citation:
Assignee:
CHOI TAE KWANG (KR)
International Classes:
H01F7/122; H01F7/02; H01F7/126; H01F7/20
Foreign References:
| KR20120119412A | 2012-10-31 | |||
| JP2016219465A | 2016-12-22 | |||
| KR101130218B1 | 2012-03-26 | |||
| JP2004193532A | 2004-07-08 | |||
| JP2002110418A | 2002-04-12 | |||
| KR101131134B1 | 2012-04-03 |
Other References:
See also references of EP 3624148A4
Attorney, Agent or Firm:
INVENTUS INTELLECTUAL PROPERTY GROUP (KR)
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