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Patent Searching and Data


Title:
FITTING LOCKING/UNLOCKING DETECTOR
Document Type and Number:
Japanese Patent JP2013008283
Kind Code:
A
Abstract:

To reduce the size of a permanent magnet while ensuring the detection sensitivity.

The detector has a magnetic guide 4 disposed near a magnetic sensor 30 (a position facing to a permanent magnet 1 being interposed by the magnetic sensor 30). With this, compared with a conventional detector having no magnetic guide 4, the magnetic flux crossing a detecting plane of the magnetic sensor 30 is increased (larger magnetic flux density). As a result, even when a permanent magnet 1 of a size smaller than a conventional magnet (a weaker magnetic field), the detection sensitivity same as the conventional magnet is ensured. Since the detector has the magnetic guide 4 for guiding the magnetic flux of the permanent magnet 1 to a magnetic detection part 3, the size of the permanent magnet 1 can be reduced while ensuring the detection sensitivity.


Inventors:
Kajiyama, Satoshi
Kudo, Hiroyuki
Shibata, Kiwamu
Matsuda, Hiroshi
Takenouchi, Toshiharu
Application Number:
JP2011000141714
Publication Date:
January 10, 2013
Filing Date:
June 27, 2011
Export Citation:
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Assignee:
PANASONIC CORP
International Classes:
G08B13/08; E05B41/00; E05B45/06
Domestic Patent References:
JP2007146637A2007-06-14
JPH08218690A1996-08-27
JP2010129007A2010-06-10
JPS6436396A1989-02-07
JP2002094140A2002-03-29
JP2000292512A2000-10-20
JPH07259398A1995-10-09
JP2003281636A2003-10-03
JP2011003167A2011-01-06
JP2011003167A2011-01-06
JP2003281636A2003-10-03
JP2007146637A2007-06-14
JPH08218690A1996-08-27
JP2010129007A2010-06-10
JPS6436396A1989-02-07
JP2002094140A2002-03-29
JP2000292512A2000-10-20
JPH07259398A1995-10-09
Attorney, Agent or Firm:
西川 惠清
水尻 勝久
坂口 武
北出 英敏