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    • 7. 发明授权
    • Pressure switch
    • 压力开关
    • US07777142B2
    • 2010-08-17
    • US11915209
    • 2006-05-24
    • Masahiro Hasunuma
    • Masahiro Hasunuma
    • H01H35/24
    • H01H35/34G01L19/0084G01L19/0645G01L19/069G01L19/12G01L19/147
    • A compact pressure switch that causes little error in the operating point of the switch and that has resistance to dust, water, and chemical solutions is provided. The pressure switch includes a housing (2) formed of a resin having chemical solution resistance, a pressure sensor (3) that detects the pressure of a fluid, a separator (4) that is formed of a resin having chemical solution resistance and that prevents the fluid from coming into contact with the pressure sensor (3), and a circuit unit (5) that outputs on and off signals based on the output of the pressure sensor (3). At least the pressure sensor (3) and the circuit unit (5) are disposed in a sealed space (S) formed by the housing (2) and the separator (4).
    • 提供了紧凑的压力开关,其在开关的操作点上几乎没有误差,并且具有抵抗灰尘,水和化学溶液的能力。 压力开关包括由具有耐化学溶剂性的树脂形成的壳体(2),检测流体压力的压力传感器(3),由具有耐溶剂性的树脂形成并防止 流体与压力传感器(3)接触;以及电路单元(5),其基于压力传感器(3)的输出来输出导通和截止信号。 至少压力传感器(3)和电路单元(5)设置在由壳体(2)和隔板(4)形成的密封空间(S)中。