发明名称 圧力検出装置
摘要 A pressure detection device configured in a circular cylindrical shape is mounted to the outer periphery of the front end of a function member mounted so as to face the combustion chamber of an engine, and the pressure detection device detects the pressure in the cylinder. The pressure detection device is provided with: a pressure receiving ring (14) which receives pressure from the outside; a pressure transmission ring (15) which transmits pressure transmitted from the pressure receiving ring (14); a piezoelectric element (16) which is in contact with the pressure transmission ring (15) and which detects a variation in pressure; and a circular cylindrical housing which has an opening (10a) for supporting the pressure receiving ring (14), the pressure transmission ring (15), and the piezoelectric element (16). The piezoelectric element (16) outputs electrical signals from two opposing electrodes, the electrical signals corresponding to pressures. One of the electrodes of the piezoelectric elements (16) causes the piezoelectric element (16) to be in contact with the housing and serves as the ground electrode, and the other electrode is electrically connected to a cable (60) through a connection terminal (52). The cable (60) is configured from a flexible printed circuit board. The electrical signals are transmitted to an outside device by the cable (60).
申请公布号 JP6069329(B2) 申请公布日期 2017.02.01
申请号 JP20140533011 申请日期 2013.08.27
申请人 シチズンファインデバイス株式会社;シチズン時計株式会社 发明人 高橋 和生;林 貴之
分类号 G01L23/10;F02D35/00;F02D45/00;G01L23/22 主分类号 G01L23/10
代理机构 代理人
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