Voice coil support for a coil transducer motor structure

Details Voice coil support for a coil transducer motor structure Voice coil support for a coil transducer motor structure

H - Electricity

04

R

H04R 9/04 (2006.01)

Patent

CA 2729066

The invention relates to a voice coil support (21) for a coil transducer motor structure (10) having a first surface (26) towards one end and a second surface (22) towards the other end along an axis of displace-ment Z, the voice coil support being adapted to receive at least one coil (22H, 22L) wound therearound an outer surface (27) arranged in use for displacing the voice coil support (21) along its axis of displacement Z, as a current is driven through the coils (22H, 22L) when the voice coil support (21) is placed in a magnetic field, characterized in that the voice coil sup- port (21) comprises a material adapted to prevent airflow communication between at least the first surface (26) and the second surface (22).

Linvention concerne un support de bobine acoustique (21) destiné à une structure de moteur dun transducteur de bobine (10) possédant une première surface (26) vers une extrémité et une seconde surface (22) vers lautre extrémité le long dun axe de déplacement Z, le support de bobine acoustique étant adapté pour recevoir au moins une bobine (22H, 22L) enroulée autour dune surface extérieure (27) qui, en fonctionnement, est disposée de façon à déplacer le support de bobine acoustique (21) le long de son axe de déplacement Z, étant donné quun courant est amené par les bobines (22H, 22L) lorsque le support de bobine acoustique (21) est placé dans un champ magnétique. Linvention est caractérisée en ce que le support de bobine acoustique (21) comprend un matériau adapté pour empêcher la communication dun flux dair entre au moins la première surface (26) et la seconde surface (22).

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