Knock sensor
    1.
    发明授权
    Knock sensor 有权
    敲击传感器

    公开(公告)号:US07449819B2

    公开(公告)日:2008-11-11

    申请号:US11644908

    申请日:2006-12-26

    IPC分类号: H01L41/113

    CPC分类号: G01L23/222

    摘要: A knock sensor includes: a base including an annular flange portion and a cylindrical portion, an annular piezoelectric element fitted onto the cylindrical portion, electrode portions oppositely formed on front and rear surfaces of the annular piezoelectric element, first and second terminal plates in contact with the electrode portions, an annular weight, a first insulating sheet interposed between the first terminal plate and the flange portion, a second insulating sheet interposed between the second terminal plate and the weight. The electrode portions include annular partial electrodes each having a width narrower than a radial width of the piezoelectric element. The annular partial electrode has a thickness d satisfying: L/d

    摘要翻译: 爆震传感器包括:基部,包括环形凸缘部分和圆柱形部分,安装在圆筒部分上的环形压电元件,与环形压电元件的前表面和后表面相对形成的电极部分,与第一和第二端子板接触的第一和第二端子板 所述电极部分,环形重物,介于所述第一端子板和所述凸缘部分之间的第一绝缘片,插入所述第二端子板和所述配重之间的第二绝缘片。 电极部分包括各自具有窄于压电元件的径向宽度的宽度的环形部分电极。 环状部分电极的厚度d满足:L / d <80,其中L是未布置电极部分的前表面和后表面的外周的径向尺寸。

    Knock sensor
    3.
    发明申请
    Knock sensor 有权
    敲击传感器

    公开(公告)号:US20070228888A1

    公开(公告)日:2007-10-04

    申请号:US11644908

    申请日:2006-12-26

    IPC分类号: H01L41/00

    CPC分类号: G01L23/222

    摘要: A knock sensor includes: a base including an annular flange portion and a cylindrical portion, an annular piezoelectric element fitted onto the cylindrical portion, electrode portions oppositely formed on front and rear surfaces of the annular piezoelectric element, first and second terminal plates in contact with the electrode portions, an annular weight, a first insulating sheet interposed between the first terminal plate and the flange portion, a second insulating sheet interposed between the second terminal plate and the weight. The electrode portions include annular partial electrodes each having a width narrower than a radial width of the piezoelectric element. The annular partial electrode has a thickness d satisfying: L/d

    摘要翻译: 爆震传感器包括:基部,包括环形凸缘部分和圆柱形部分,安装在圆筒部分上的环形压电元件,与环形压电元件的前表面和后表面相对形成的电极部分,与第一和第二端子板接触的第一和第二端子板 所述电极部分,环形重物,介于所述第一端子板和所述凸缘部分之间的第一绝缘片,插入所述第二端子板和所述配重之间的第二绝缘片。 电极部分包括各自具有窄于压电元件的径向宽度的宽度的环形部分电极。 环状部分电极的厚度d满足:L / d <80,其中L是未布置电极部分的前表面和后表面的外周的径向尺寸。