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1. 发明授权

US4435625A Pneumatically operable switch unit for monitoring tire pressure 失效
标题翻译：用于监测轮胎压力的气动操作开关单元
公开(公告)号：US4435625A
公开(公告)日：1984-03-06
申请号：US353966
申请日：1982-03-02
申请人： Emil Buchschmid , Rainer Burkel , Jean Danamps , Anton Frenznick , Gunther Stradtmann
发明人： Emil Buchschmid , Rainer Burkel , Jean Danamps , Anton Frenznick , Gunther Stradtmann
IPC分类号： B60C23/02 , B60C23/04 , G01L17/00 , H01H35/00
CPC分类号： B60C23/0408
摘要： An insulating cup-shaped body (29) that is screwed into the rim (11) of a vehicle wheel prevents conduction of heat (generated by the brakes, for example) from heating the metallic body (16) that forms a reference pressure chamber closed off by a membrane (17) from the inflated interior of a vehicle tire. The membrane (17) is set slightly within the rim of the cup for protection during tire changes. The chamber and switch housing (16) and a spool (27) for the coil of a resonant circuit form a preassembled unit that is snapped into the insulating cup and cemented into place. The relatively large coil diameter adds to the economy of the device, permitting the use of a small capacitor. The temperature of the gas sealed in the reference pressure chamber (18) by closure of the filling bore with a steel ball (25) follows the temperature of the interior of the tire and reliably opens the resonant circuit if the tire pressure falls below a prescribed limit. The condition of the resonant circuit is sensed by a fixed miniature oscillator mounted on the axle.
摘要翻译：螺纹连接到车轮的轮辋（11）中的绝缘的杯形体（29）防止了热（由例如制动器产生的）的传导加热形成基准压力室的金属体（16）通过来自车辆轮胎的充气内部的膜（17）离开。膜（17）稍微设置在杯子的边缘内，以在轮胎更换期间进行保护。腔室和开关壳体（16）和用于谐振电路的线圈的线轴（27）形成预先组装的单元，其被卡扣到绝缘杯中并胶合到位。相对较大的线圈直径增加了器件的经济性，允许使用小电容器。通过用钢球（25）关闭填充孔而密封在参考压力室（18）中的气体的温度跟随轮胎内部的温度，并且如果轮胎压力低于规定的范围则可靠地打开谐振回路限制。谐振电路的状态由安装在轴上的固定微型振荡器感测。

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