Ultrasonic sensor device having an improved decoupling ring and motor vehicle
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United States of America Patent
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Aug 29, 2017
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app pub date -
Jul 23, 2013
filing date -
Jul 24, 2012
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Abstract
The invention relates to an ultrasonic sensor device (1) for a motor vehicle, comprising an ultrasonic sensor (2), which comprises a pot-shaped membrane (21) for emitting and/or receiving ultrasonic signals, comprising a decoupling ring (6), which is arranged to fit around the membrane (21) in contact with an outer circumference (34) of the membrane (21), and comprising a stiffening element (13), which is arranged around the decoupling ring (6), wherein the decoupling ring (6) comprises a circumferential first radial decoupling region (32) which is in contact with the outer circumference (34) of the membrane (21) as well as a second radial decoupling region (33) with an axial face (37) which is in contact with an axial face (38) of the stiffening element (13).
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