PHYSICAL QUANTITY DETECTION DEVICE

Title:

PHYSICAL QUANTITY DETECTION DEVICE

Document Type and Number:

WIPO Patent Application WO/2021/095504

Kind Code:

A1

Abstract:

Provided is a physical quantity detection device that is capable of improved precision, over the prior art, in physical quantity measurement.　A physical quantity detection device 20 comprises: a detector element comprising a flow rate detecting part 205; a circuit board 207; a housing 201; and a cover 202. The detector element detects a physical quantity. The detector element is mounted on the circuit board 207. The housing 201 houses the circuit board 207. The cover 202 is anchored to the housing 201, and defines a secondary passage 234 in which the flow rate detecting part 205 is disposed. The housing 201 and the cover 202 have positioning parts P. The positioning parts P respectively comprise pins P1 that extend in the through-thickness direction Dt of the circuit board 207, and mating parts P2 that mate with distal ends P11 of the pins P1 so as to position the housing 201 and the cover 202. The pins P1 respectively comprise locking parts P12 that oppose locking faces 207f, of the circuit board 207, along the through-thickness direction Dt, and restrict movement in a planar direction Df along the front and rear faces of the circuit board 207.

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JP3188597	FLOWMETER
WO/1989/005968	SILICON-BASED SENSORS AND METHOD OF MAKING SAME

Inventors:

SAITO TOMOAKI (JP)
UENODAN AKIRA (JP)
GORAI NOBUAKI (JP)

Application Number:

PCT/JP2020/040167

Publication Date:

May 20, 2021

Filing Date:

October 27, 2020

Export Citation:

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Assignee:

HITACHI ASTEMO LTD (JP)

International Classes:

G01F1/684

Domestic Patent References:

WO2018138967A1	2018-08-02
WO2002066937A1	2002-08-29

Foreign References:

JPH07500915A	1995-01-26
JP2011075519A	2011-04-14
JP2003249775A	2003-09-05
JP2019023610A	2019-02-14
US20180067093A1	2018-03-08

Other References: