Moulded transducer

Details Moulded transducer Moulded transducer

H - Electricity

04

R

H04R 17/00 (2006.01) B06B 1/06 (2006.01) G10K 11/02 (2006.01) H04R 31/00 (2006.01) B06B 1/02 (2006.01)

Patent

CA 2251395

An electro-acoustic transducer is manufactured by forming a transducer assembly at least one piezoelectric element, electrodes contacting the element, and acoustic loading blocks, and applying successive superposed mouldings of material of differing acoustic properties around said transducer assembly to provide the transducer, while maintaining electrical coupling between the transducer assembly and the exterior of the transducer, the mouldings providing at least one acoustic matching layer covering a radiating surface of the transducer assembly, a casing surrounding the remainder of the transducer assembly, at least one layer of acoustic isolating material between the casing and the transducer assembly. The successive layers may either be moulded in situ, or moulded separately and then assembled.

Le transducteur électroacoustique comprend au moins un élément piézoélectrique, des électrodes touchant l'élément, et des blocs de charge acoustique, et on le fabrique en appliquant des couches moulées superposées successives de matériau, qui possèdent différentes propriétés acoustiques, autour du transducteur pour former ce dernier, tout en conservant un couplage électrique entre le transducteur et l'extérieur de ce dernier, les couches moulées fournissant au moins une couche d'adaptation acoustique qui couvre une surface rayonnante du transducteur, un revêtement qui entoure le reste du transducteur, au moins une couche de matériau isolant acoustique entre le revêtement et le transducteur. Les couches successives peuvent être moulées en place, ou moulées séparément, puis assemblées.

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