圧力測定装置

Pressure measuring device

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of an error in the sensor output characteris tic of a pressure measuring device when receiving a fastening force accompanied by the screwing of the pressure measuring device to a part to be measured. SOLUTION: A semiconductor pressure sensor 22 having a connecting pipe 22b and a lead wire 22c is mounted on a first sensor fixing member 23 and a second sensor fixing member 24, and both the sensor fixing members 23, 24 are mutually connected by use of a fastener 25 and fixed to a housing 26 having a projection part 26b on one side of a bottom part 26a and a cylindrical side wall part 26h on the other side of the bottom part. A circuit board 31 is mounted on the first sensor fixing member 24 through a spacer 32 to connect to the lead wire 22c, and a signal line 33 from the circuit board 31 is connected to a connector 30 provided on a housing cap 29. A connecting port 26c for inserting the connecting pipe 22b is provided through the bottom part 26a and projection part 26b, and a screw part 26f is formed on the periphery of the projection part 26b.
(57)【要約】 【課題】 圧力測定装置を被測定圧力部に螺着するとき に伴う締め付け力を受けても、圧力測定装置のセンサ出 力特性に誤差が生じるのを抑止させる。 【解決手段】 導圧管22b及びリード線22cを有す る半導体圧力センサ22を、第1のセンサ固定部材23 と第2のセンサ固定部材24とに取り付け、締め付け具 25を使用して両センサ固定部材23,24を結合し、 これを、底部26aの一方側に突起部26bを有し、底 部の他方側に筒状の側壁部26hを有したハウジング2 6に固定する。回路基板31をスペーサ32を介して第 1のセンサ固定部材に取り付けてリード線と接続し、回 路基板からの信号線33をハウジングキャップ29に設 けたコネクタ30に接続する。底部および突起部には、 導圧管が挿入される導圧口26cを設け、突起部の外周 にネジ部26fを形成する。

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Cited By (4)

    Publication numberPublication dateAssigneeTitle
    CN-105403351-AMarch 16, 2016宿州中矿三杰科技有限公司数显油压传感器
    JP-2014149220-AAugust 21, 2014Hitachi Automotive Systems Ltd, 日立オートモティブシステムズ株式会社Composite sensor
    US-9810734-B2November 07, 2017Hitachi Automotive Systems, Ltd.Compound sensor including a plurality of detection elements and a plurality of fault detection circuits
    WO-2014119092-A1August 07, 2014日立オートモティブシステムズ株式会社複合センサ