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    • 7. 发明专利
    • Pressure sensor device
    • 压力传感器装置
    • JP2005069736A
    • 2005-03-17
    • JP2003296695
    • 2003-08-20
    • Yamatake Corp株式会社山武
    • YONEDA MASAYUKIMIZOGUCHI JUNKAJIO TAKAHIROISHIKAWA MASAYAAZUMA YOICHITSUCHIYA NAOHISA
    • G01L9/04G01L9/00G01L19/06H01L29/84
    • G01L19/0618G01L9/0051G01L13/026G01L19/0092G01L19/0645
    • PROBLEM TO BE SOLVED: To provide a pressure sensor device having a simple structure and capable of being miniaturized, in which the excessive pressure protection operational pressure for a sensor chip can be made sufficiently high. SOLUTION: The pressure sensor device is provided with a sheet-like diaphragm on whose surface a strain resistance gauge is formed and a stopper member having a recessed part consisting of a curved surface along the displacement of the diaphragm, in which the recessed part is provided so as to be disposed opposite the diaphragm. In particular, the curved surface of the recessed part is formed as the recessed surface in which the depth (y) at the distance (x) from the center of the diaphragm, with respect to the excessive pressure protection operational pressure (p), is expressed by a quartic function of [y=pr 4 (1-x 2 /r 2 ) 2 /64D], where (r) is the radius of the diaphragm, (t) is the thickness, and D is flexural stiffness. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种具有简单结构并能够小型化的压力传感器装置,其中传感器芯片的过压保护操作压力可以足够高。 解决方案:压力传感器装置在其表面上形成有应变阻力计,并具有一个止动件,该片状隔膜具有沿着隔膜的位移由弯曲表面构成的凹部,其中凹入 部分设置成与隔膜相对设置。 特别地,凹部的弯曲表面形成为凹部表面,其中相对于过压保护操作压力(p),距隔膜中心距离(x)的深度(y)为 由[y = pr 4 (1-x 2 / r 2 )的四次函数表示。 64D],其中(r)是隔膜的半径,(t)是厚度,D是挠曲刚度。 版权所有(C)2005,JPO&NCIPI