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Title:
ELECTRIC LOCK UNIT
Document Type and Number:
Japanese Patent JP2009084825
Kind Code:
A
Abstract:

To provide an electric lock unit with a simplified constitution associated with the determination of a locked/unlocked state of a thumb-turn lock, and which can be used on either of right and left hinged doors by two detection switches.

A circumferential surface portion 7b with a rotating shaft as a central axis is formed on a thumb-turn cover 7; first and second detection switches, which are composed of the detection switches 9 and a switch operating member 17a (17b), are provided in such a manner as to sandwich the circumferential surface portion 7b; and the circumferential surface portion 7b is provided with operating protrusive ridges 7c, 7c, etc. for operating the first and second detection switches in synchronization with the rotation of the thumb-turn cover 7. A control device determines that the lock is in a locked state when a prescribed state is satisfied, and actuates a motor 8 until the prescribed state is satisfied when the prescribed state is not satisfied. The prescribed state means a state in which only either of the first and second detection switches is turned on/off.


Inventors:
MIZUTANI YUKITAKA
YOSHIDA KAZUYA
ANDO TORU
Application Number:
JP2007000253632
Publication Date:
April 23, 2009
Filing Date:
September 28, 2007
Export Citation:
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Assignee:
AIPHONE CO LTD
International Classes:
E05B45/14; E05B17/22; E05B47/00
Domestic Patent References:
JP2004143874A2004-05-20
JPH0397445U1991-10-07
Attorney, Agent or Firm:
上田 恭一



 
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