JPS59103241U

JPS59103241U - pressure measuring device

Info

Publication number: JPS59103241U
Application number: JP19543782U
Authority: JP
Inventors: 沢本　国章; 森田　達郎
Original assignee: 日産自動車株式会社
Priority date: 1982-12-27
Filing date: 1982-12-27
Publication date: 1984-07-11

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図はシリンダヘッドの点火栓に装備した従来の圧力
測定装置の一例を示す断面図、第２図はその感圧センサ
の構成の一例を示す断面図、第３図は本考案圧力測定装
置による感圧センサの一例を示す断面図である。第４図
は本考案の更に他の実施例を示す断面図、第５図はその
ワッシャの形状を示す斜視図である。１・・・感圧センサ、ＩＡ・・・中心電極、ＩＢ・・・
外側電極、ＩＣ・・・圧電素子、１Ｄ・・・コーティン
グ、２・・・燃焼室、３・・・シリンダヘッド、３Ａ・
・・取付座、４・・・点火栓、４Ａ・・・プラグ体、５
・・・螺着部、６・・・ワッシャ、７・・・信号線、１
０．２０・・・ワッシャ。Fig. 1 is a cross-sectional view showing an example of a conventional pressure measuring device installed on the spark plug of a cylinder head, Fig. 2 is a cross-sectional view showing an example of the configuration of the pressure sensor, and Fig. 3 is a pressure measuring device of the present invention. FIG. 2 is a sectional view showing an example of a pressure-sensitive sensor according to FIG. FIG. 4 is a sectional view showing still another embodiment of the present invention, and FIG. 5 is a perspective view showing the shape of the washer. 1...Pressure sensitive sensor, IA...center electrode, IB...
Outer electrode, IC... piezoelectric element, 1D... coating, 2... combustion chamber, 3... cylinder head, 3A...
...Mounting seat, 4...Spark plug, 4A...Plug body, 5
...Threaded part, 6...Washer, 7...Signal line, 1
0.20... washer.

Claims

[Scope of utility model registration request]

A member is screwed into the wall of the sealed part in which the fluid to be measured is held from the outside to the sealed part, and the member is inserted in the screwing direction between the member and the wall of the sealed part. In the pressure measuring device having a pressure-sensitive sensor, any of the clamping surfaces between the clamping surface between the pressure-sensitive sensor and the member and the clamping surface between the pressure-sensitive sensor and the wall of the sealed portion A washer made of a conductive material softer than the material forming the surface is interposed, and the washer is pressed against the wall of the sealed portion of the member during screwing, so that the pressure sensor, the member, and the A pressure measuring device characterized in that the pressure measuring device is tightly sealed to a clamping surface of a wall of a sealed portion.