Ultrasonic Sensor Device Having An Improved Decoupling Ring And Motor Vehicle

摘要

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 front side (37) which is in contact with an axial front side (38) of the stiffening element (13).

主权项

1. An ultrasonic sensor device for a motor vehicle, comprising an ultrasonic sensor, which comprises a pot-shaped membrane for emitting and/or receiving ultrasonic signals, comprising a decoupling ring, which is arranged to fit around the membrane in contact with an outer circumference of the membrane, and comprising a stiffening element, which is arranged around the decoupling ring, characterized in that
the decoupling ring comprises a circumferential first radial decoupling region which is in contact with the outer circumference of the membrane as well as a second radial decoupling region with an axial front side, which is in contact with an axial front side of the stiffening element, wherein the axial front side of the decoupling ring forms a front, which faces in the direction towards a trim element of the motor vehicle and is in contact with a back side of the stiffening element that faces the ultrasonic sensor and faces away from the trim element.