Title:
PRESSURE SENSOR
Document Type and Number:
WIPO Patent Application WO/2020/144803
Kind Code:
A1
Abstract:
This pressure sensor comprises cylindrical housings (10, 210); a diaphragm which is fixed to the tip of the housing and which is exposed to a pressure medium (30); pressure measuring members (70, 270) comprising a first electrode (71), a piezoelectric element (72) and a second electrode (73) laminated in sequence on the inside of the housing; first long electro-conductors (91, 210) which are electrically connected to the first electrode; second long electro-conductors (92, 290) which are electrically connected to the second electrode; and restricting members (100, 300) which restrict relative movement of the first electro-conductors and the second electro-conductors. According to this configuration, it is possible to curb or prevent variations in parasitic capacitance, and curb or prevent the occurrence of noise.
Inventors:
SATO TOMOYA (JP)
FUKUI KATSUHIKO (JP)
FUKUI KATSUHIKO (JP)
Application Number:
PCT/JP2019/000493
Publication Date:
July 16, 2020
Filing Date:
January 10, 2019
Export Citation:
Assignee:
MIKUNI KOGYO KK (JP)
International Classes:
G01L23/10; F02D45/00; G01L19/06; G01L19/14; G01L23/22
Foreign References:
| JPS6253616B2 | 1987-11-11 | |||
| US20180202886A1 | 2018-07-19 | |||
| JP2822726B2 | 1998-11-11 | |||
| JPH0594942U | 1993-12-24 |
Attorney, Agent or Firm:
YAMAMOTO Takatoshi (JP)
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