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52. 发明申请

WO1991001896A1 PRESSURE SENSOR FOR MOTOR VEHICLE TYRES 审中-公开
标题翻译：汽车轮胎压力传感器
公开(公告)号：WO1991001896A1
公开(公告)日：1991-02-21
申请号：PCT/DE1990000381
申请日：1990-05-25
申请人： ROBERT BOSCH GMBH , SCHRUMPF, Hans , HETTICH, Gerhard , KASTNER, Sylvia
发明人： ROBERT BOSCH GMBH
IPC分类号： B60C23/04
CPC分类号： H01H9/047 , B60C23/0408 , B60C23/0498
摘要： A pressure sensor (13) for motor vehicle tyres has a manometric switch for monitoring the tyre pressure, which is actuated by the tyre pressure. The manometric switch comprises a reference pressure chamber (21) which is sealed on the side nearer the tyre by an electrically conductive membrane (22) and carries a contact pin (23). When the air pressure in the tyre is sufficient, the central region of the membrane rests against the contact pin, closing a current circuit. To test for leaks in the reference pressure chamber, the latter is flushed with the compressed air and when the pressure is equalized on both sides of the membrane (22), the membrane (22) is lifted off the contact pin (23). Between the sensor housing (18) and the reference pressure chamber (21) is a semi-permeable sealing ring (31) made of material which is permeable to air and impermeable to moisture, and which therefore prevents moisture from entering the passage (24) through which the contact pin (23) passes into the reference pressure chamber (21).
摘要翻译：用于机动车辆轮胎的压力传感器（13）具有用于监测由轮胎压力致动的轮胎压力的测力开关。测压开关包括参考压力室（21），其通过导电膜（22）密封在靠近轮胎的一侧并承载接触销（23）。当轮胎中的空气压力足够时，膜的中心区域抵靠接触销，闭合电流回路。为了测试参考压力室中的泄漏，后者用压缩空气冲洗，并且当膜（22）的两侧均压时，膜（22）被提升离开接触销（23）。在传感器壳体（18）和基准压力室（21）之间的是由空气可渗透并且不透水的材料制成的半渗透密封环（31），因此防止湿气进入通道（24）接触销（23）穿过其进入参考压力室（21）。

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