Title:
圧力検出装置および圧力センサ
Document Type and Number:
Japanese Patent JP6894804
Kind Code:
B2
Abstract:
Provided is a pressure detection device, wherein a pressure detection unit includes: a pressure detecting diaphragm 12a having a first surface 12aA to which a pressure is to be transmitted from a first connection portion of a flow passage unit; a second connection portion attached to a center portion CP of a second surface of the pressure detecting diaphragm 12a; and four strain resistance portions 12b connected to each other so as to form a Wheatstone bridge circuit. One of either the first connection portion or the second connection portion is formed of a magnet, and the other of either the first connection portion or the second connection portion is formed of a magnet or a magnetic body. The first connection portion and the second connection portion are arranged such that the first connection portion and the second connection portion are attracted by a magnetic force in a state where the flow passage unit is mounted on the pressure detection unit. The four strain resistance portions 12b are attached to a region of the second surface of the pressure detecting diaphragm 12a other than the center portion.
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Inventors:
Kazuo Abo
Shodo Kobayashi
Shodo Kobayashi
Application Number:
JP2017158048A
Publication Date:
June 30, 2021
Filing Date:
August 18, 2017
Export Citation:
Assignee:
Surpass Industry Co., Ltd.
International Classes:
G01L19/00; G01L9/04
Domestic Patent References:
| JP6666736B2 | ||||
| JP6556522B2 | ||||
| JP4083420B2 | ||||
| JP797054B2 | ||||
| JP4046473B1 |
Foreign References:
| US20140076058 | ||||
| WO2012166980A2 |
Attorney, Agent or Firm:
Noriharu Fujita
Miori Takao
Kawakami Miki
Daisuke Nagata
Miori Takao
Kawakami Miki
Daisuke Nagata