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Title:
SAFETY SWITCH
Document Type and Number:
Japanese Patent JP2007257973
Kind Code:
A
Abstract:

To provide a safety switch having a simple structure capable of reducing size and cost and securing safety by functioning a fail-safe without a need to deform and break a lock member every time when a draw-out load equal to or larger than a setting value is applied to an operation key in a locked state.

In a state that the lock member 53 engages with a lock part 23 of a lock cam 11 and locking up the operation key 50 not to be drawn out, when the operation key 50 is drawn out while a lock/unlock detection switch part 32 is not working, a driving cam 10 is rotated by the operation key 50 and an operation key insert/remove detection switch part 31 is actuated and a safety circuit R is operated to open.

COPYRIGHT: (C)2008,JPO&INPIT


Inventors:
FUKUMOTO TETSUYA
SASAKI SHUNKICHI
TAKENAKA EIKO
SHIMAZU KENJI
YAMAMOTO SHINYA
WATANABE SHINYA
Application Number:
JP2006080157A
Publication Date:
October 04, 2007
Filing Date:
March 23, 2006
Export Citation:
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Assignee:
OMRON CORP
International Classes:
H01H9/28; H01H27/00
Domestic Patent References:
JP2002216591A
JP2003331696A
JPH05303926A
Attorney, Agent or Firm:
青木 輝夫



 
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