Login| Sign Up| Help| Contact|

Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2012/073531
Kind Code:
This plunger for a limit switch has slits formed thereon in such a manner that the amount of light that falls on a light-receiving element varies according to a displacement in the plunger. The limit switch is provided with: a setting processing unit (123) for setting a voltage value output by the light-receiving element as a threshold value when a setting instruction has been input under circumstances in which the plunger has been displaced to a position specified by a user; a position detector (113) for performing detection processing for detecting whether the plunger is in a position that is closer to a reference position than the specified position by comparing the set threshold value and the voltage value output by the light-receiving element; and an output controller (119) for outputting a signal on the basis of the detection processing result. This configuration enables a switch to be provided that is capable of easily outputting a signal according to the desired position of a displacement member without requiring an adjustment screw in a switch that outputs a signal according to the position of a displacement member.

TOBITA, Kokichi (())
飛田 孝吉 (())
Application Number:
Publication Date:
June 07, 2012
Filing Date:
March 16, 2011
Export Citation:
Click for automatic bibliography generation   Help
OMRON CORPORATION (801 Minamifudodo-cho, Horikawahigashiiru Shiokoji-dori, Shimogyo-ku, Kyoto-sh, Kyoto 30, 〒6008530, JP)
オムロン株式会社 (〒30 京都府京都市下京区塩小路通堀川東入南不動堂町801番地 Kyoto, 〒6008530, JP)
TOBITA, Kokichi (())
International Classes:
H01H35/00; H01H21/28
Foreign References:
Attorney, Agent or Firm:
MASUI, Yoshihisa et al. (HARAKENZO WORLD PATENT & TRADEMARK, Daiwa Minamimorimachi Building 2-6, Tenjinbashi 2-chome Kita, Kita-ku, Osaka-sh, Osaka 41, 〒5300041, JP)
Download PDF: