Title:
Capacitance detection type pressure switch and pressure sensor
Document Type and Number:
Japanese Patent JP6309498
Kind Code:
B2
Abstract:
A capacitance-detection pressure switch and pressure sensor that, in the connection between a diaphragm used as one electrode and a signal line for detecting a signal from the diaphragm, can ensure stable conduction without exerting an influence on operating characteristics of the diaphragm. A capacitance-detection type pressure switch of the present invention includes a metallic diaphragm that is displaced in response to a change in pressure of an operating medium supplied from a conduit, a movable electrode connected electrically to the diaphragm, a fixed electrode provided at an atmospheric pressure side of the diaphragm opposing the conduit, and an insulating film ensuring insulation between the fixed electrode and the diaphragm, wherein an electrode contact portion for connection to the movable electrode is formed as at least one projection extending toward an exterior on a part of the outer periphery of the diaphragm.
Inventors:
Yoshihiro Hamabe
Kenichi Matsuyama
Katsuki
Kenichi Matsuyama
Katsuki
Application Number:
JP2015179748A
Publication Date:
April 11, 2018
Filing Date:
September 11, 2015
Export Citation:
Assignee:
Saginomiya Co., Ltd.
International Classes:
H01H35/34; G01L9/12
Domestic Patent References:
| JP49109872A | ||||
| JP11295176A | ||||
| JP2013171614A | ||||
| JP2008300312A |
Foreign References:
| US20050088184 |
Attorney, Agent or Firm:
Patent Business Corporation Tani/Abe Patent Office
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