发明名称 |
PIEZOELECTRIC-TYPE PRESSURE SENSOR |
摘要 |
Members as an upper fixing screw, a piezoelectric element, a pressure transmitting member are located closer to region of an engine to be measured and the like than a fitting thread portion of a sensor casing so that a pre-stress on the piezoelectric element can be constantly maintained at a predetermined value, thus enabling pressure measurement with a high degree of accuracy. Further, a projecting portion or a spacer is provided on the backside of a pressure receiving surface in order to ensure the surface contact between the pressure transmitting member and the back surface of the pressure receiving surface, thus preventing the stress from concentrating on corners of the bottom surface of the pressure transmitting member.
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申请公布号 |
CA2038226(C) |
申请公布日期 |
1994.10.11 |
申请号 |
CA19912038226 |
申请日期 |
1991.03.14 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
OKAUCHI, TOHRU;KUSAKABE, HIROKI;TAKIGAWA, MASUO |
分类号 |
G01L9/00;G01L19/14;(IPC1-7):G01L23/10 |
主分类号 |
G01L9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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