Sound transducer, having a transducer element integrated in a vibration-capable diaphragm including an electrically active polymer

An ultrasonic sensor, comprising:

• an acoustic transducer, including:
• a functional group encompassing a diaphragm cup and at least one electroacoustic transducer element;
• and
• a housing having a plug housing, wherein:
• the diaphragm cup includes a vibration-capable diaphragm and a wall,
• the transducer element is adapted to at least one of:
• (i) excite the vibration-capable diaphragm to vibrate, and (ii) convert vibrations of the diaphragm into an electrical signal,
• the diaphragm cup includes a plastic material,
• the transducer element is integrated into the vibration-capable diaphragm, and
• the transducer element includes an electrically active polymer;
• wherein the vibration-capable diaphragm includes at least one of regions having a reduced thickness, and regions having an elevated thickness, wherein a vibration behavior and a resonant frequency of the acoustic transducer are determined by a geometric conformation of the regions,
• wherein the transducer element includes a first surface and a second surface located opposite from the first surface, and
• wherein the transducer element is integrated into the vibration-capable diaphragm so that the second surface is exposed toward an interior of the diaphragm cup,
• wherein the transducer element and the further transducer element each has a respective disk-shaped body and are disposed parallel to one another with reference to a longitudinal axis of the diaphragm cup,
• wherein each of the transducer elements is disk-shaped, having a first surface and a second surface located oppositely from the first, and an encircling lateral surface, and each of the transducer elements is disposed with its surfaces parallel to one another with reference to a longitudinal axis of the diaphragm cup,
• wherein the first transducer element is integrated into the diaphragm so that a second surface is exposed toward an interior of the diaphragm cup,
• wherein the first transducer element is integrated into the diaphragm so that the second surface terminates flush with the diaphragm, and
• wherein the first transducer element is integrated into the diaphragm so that a second surface is exposed toward an interior of the diaphragm cup, so that none of the surfaces is exposed.