专利名称：ULTRASONIC SENSOR发明人：FALZEWSKI, DIETER申请号：EP01902349.8申请日：20010123公开号：EP1275013B1公开日：20040102
摘要：The invention relates to an ultrasonic sensor (10), especially used as a parkingaid for a motor vehicle. The ultrasonic sensor (10) consists of a sensor membrane (12)arranged in a housing (11). A piezoelectric converter (14) is fixed on the inner side of thesensor membrane. First decoupling means (15) are used to arrange the sensor
membrane (12) in the housing (11). Second decoupling means (16) are provided to avoid amechanical damping effect arising from the motor vehicle or the transmission of externalvibrations on the sensor membrane (12) and are arranged between the sensor membrane(12) and the covering of part of the motor vehicle or another protective covering. Thesecond decoupling means (16) consist of a fine air gap which is located between thesensor membrane (12) and a protective wall (17) surrounding said sensor membrane andacting as a protective covering. A film (19) rising above the second decoupling means,which are embodied as a fine air gap (18), and parts of the protective wall (17) is appliedto the sensor membrane (12) on the front side thereof.
申请人：VOLKSWAGEN AKTIENGESELLSCHAFT,VOLKSWAGEN AG,VOLKSWAGENAKTIENGESELLSCHAFT
地址：DE
国籍：DE
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