Title:
PRESSURE SENSOR
Document Type and Number:
WIPO Patent Application WO/2016/027472
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a pressure switch which has a small number of components, enables downsizing, uses a non-contact detection device to detect a fluid pressure variation of a fluid that is a control medium of an actuation mechanism in various devices with an inexpensive structure, and provides the detected fluid pressure variation for a control operation. The pressure switch according to the present invention includes: a diaphragm that changes shape in accordance with an actuation pressure supplied from a pipe line; at least one distortion gauge that changes resistance value in accordance with the shape change of the diaphragm; and an output circuit that outputs an electric signal with two values, being ON or OFF, on the basis of the change in resistance of the distortion gauge.
Inventors:
HAMABE YOSHIHIRO (JP)
TANAKA TATSUYA (JP)
TANAKA TATSUYA (JP)
Application Number:
PCT/JP2015/004220
Publication Date:
February 25, 2016
Filing Date:
August 21, 2015
Export Citation:
Assignee:
SAGINOMIYA SEISAKUSHO INC (JP)
International Classes:
H01H35/34
Foreign References:
| JPH0467947A | 1992-03-03 | |||
| JPH04368736A | 1992-12-21 | |||
| JP2008300312A | 2008-12-11 | |||
| JPS58154633A | 1983-09-14 | |||
| JPH01138433A | 1989-05-31 | |||
| JPH0278924A | 1990-03-19 |
Attorney, Agent or Firm:
TANI & ABE, p. c. (JP)
Patent business corporation A valley and Abe patent firm (JP)
Patent business corporation A valley and Abe patent firm (JP)
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