Bone-conduction device and method of manufacturing the same

H - Electricity – 04 – R

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H04R 1/00 (2006.01) H04R 31/00 (2006.01)

Patent

CA 2546532

A bone-conduction device (speaker) and a method of manufacturing the bone- conduction device. By the method, not only the device can be manufactured efficiently since man-hours for processing parts is small and a troublesome ground waste removal operation can be eliminated but also dispersion in lowest resonance frequency of products resulting from dispersion in thickness of diaphragms can be minimized to contribute to the stability and the reliability of the quality of the products. The device comprises a yoke (1) having a center magnetic pole around which a voice coil is wrapped, magnets (2) disposed on the extension parts of the yoke (1) in two directions, diaphragms fixing parts (3) installed on the extension parts of the yoke (1) in the other two directions, the diaphragm (4) fixed onto the diaphragm fixing parts (3), and a plate yoke (6) fixed to the diaphragm (4). The plate yoke (6) is laser- welded to the diaphragm (4) at the outer end edges thereof in contact with the diaphragm.

Dispositif de conduction osseuse (écouteur) et méthode de fabrication. Par cette méthode, non seulement le dispositif peut être fabriqué efficacement dès lors que peu de main d'.oelig.uvre est nécessaire pour le traitement des pièces et qu'une élimination de déchets au sol peut être évitée mais aussi que la dispersion à faible fréquence de résonance de produits résultant de la dispersion en épaisseur des membranes peut être minimisée pour contribuer à la stabilité et à la fiabilité de la qualité des produits. Le dispositif comprend une chape (1) ayant un pôle magnétique central autour duquel une bobine vocale est enroulée, des aimants (2) disposés sur les extensions de la chape (1) dans deux directions, des pièces de fixation des membranes (3) installées sur les extensions de la chape (1) dans les deux autres directions, la membrane (4) fixée sur les pièces de fixation de membrane (3), et une chape plate (6) fixée à la membrane (4). La chape plate (6) est soudée au laser à la membrane (4) sur ses bordures externes en contact avec la membrane.

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