| 摘要 |
<p>The device (11) has an electrical acoustic signal transmitter (12) comprising a piezoceramic pane (14) arranged on a metal membrane (15). The signal transmitter is provided with electrical contacts at the piezoceramic pane and the metal membrane to be contacted with strip guards. The signal transmitter is secured at a carrier by a clamp-type or clip-type holding unit i.e. clip hook. The holding unit forms an electrical contact to the metal membrane, where the signal transmitter exhibits a solder-free contact with the carrier and the electrical contacts. The holding unit is made of flexible and/or spring-elastic material.</p> |
