Hitachi Astemo Ltd.

Shigeto Hirohata

Takahiro Miki

Akira Uenodan

Nobuaki Gorai

Naoki Saito

Nozomi Yatsumonji

An object is to improve measurement accuracy of a flow rate measurement device. A flow rate measurement device including: a first void which is formed of one surface of the support body and one surface of the circuit board; a second void which is formed of a surface opposite to the one surface of the circuit board and the housing; and a third void which is formed of a surface opposite to the one surface of the support body and a cover.

Flow rate measurement device

Provided is a physical quantity detection device capable of achieving both rigidity improvement and sealability improvement. A physical quantity detection device () of the invention includes a housing (), a cover (), a chip package (), and a flow rate sensor () supported by the chip package and arranged in a sub-passage. The housing includes: a first adhesive grooveA which is an adhesive groove to which an adhesive for bonding the cover is applied, extends along a proximal end of the housing, extends in the protruding direction of the housing from the proximal end of the housing to a position on a more distal end side of the housing than the chip package, and is applied with the first adhesive; and a second adhesive grooveB which extends along the sub-passageand is applied with the second adhesive. The first adhesive has a higher Young's modulus, and the second adhesive has a higher thixotropy.

Growing community of inventors

Hitachinaka, Japan

Shigeto Hirohata