Title:
DEVICE FOR LOCKING PERMANENT MAGNET
Document Type and Number:
WIPO Patent Application WO/2011/162425
Kind Code:
A1
Abstract:
The present invention relates to a device for locking a permanent magnet, and more particularly, to a device for locking a permanent magnet that can lock or unlock a door by controlling a magnetic flux, by means of rotating or moving permanent magnets in parallel. To this end, the device for locking the permanent magnet of the present invention comprises: a yoke including a bottom plate and a side plate having an attachment surface; a pole piece disposed inside and spaced apart from the yoke, a fixed permanent magnet inserted between the yoke and the pole piece, so that the N-pole thereof contacts the pole piece and the S-pole thereof contacts the yoke; a body including a rotatable controlling permanent magnet, having mutually different magnetic polarities alternately disposed in a rotating direction around a rotation axis thereof, and disposed between the yoke and the pole piece for controlling the density of the magnetic flux passing through the attachment surface of the pole piece by controlling a rotated angle thereof, so as to attach or detach an object; and an armature made from a strongly magnetic material and installed to be disposed facing the attachment surface of the body when the door is closed.
Inventors:
CHOI TAE KWANG (KR)
Application Number:
PCT/KR2010/004068
Publication Date:
December 29, 2011
Filing Date:
June 23, 2010
Export Citation:
Assignee:
CHOI TAE KWANG (KR)
International Classes:
E05B47/00; E05B49/00
Foreign References:
| KR100577928B1 | 2006-05-10 | |||
| KR100747983B1 | 2007-08-08 | |||
| JPH0552071A | 1993-03-02 |
Attorney, Agent or Firm:
DYNE PATENT & LAW FIRM (KR)
특허법인 다인 (KR)
특허법인 다인 (KR)
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Claims: