Loudspeaker

Details Loudspeaker Loudspeaker

H - Electricity

04

R

H04R 9/06 (2006.01) H04R 7/12 (2006.01) H04R 9/02 (2006.01)

Patent

CA 2147684

The loudspeaker of the invention includes: a frame; a diaphragm, a planar shape thereof being non- axisymmetric having a larger diameter and a smaller diameter when the diaphragm is viewed from a vibration direction thereof; a band-shaped edge portion provided around an outer periphery of the diaphragm, an outer periphery of the edge portion being connected to the frame and an inner periphery of the edge portion being connected to the diaphragm; a cylindrical voice coil bobbin in a non-axisymmetric shape having a larger diameter and a smaller diameter which includes a pair of opposed faces parallel to each other in a larger diameter direction, one end portion of the voice coil bobbin being connected to the diaphragm; a voice coil wound around the voice coil bobbin; a plurality of voice coil bobbin reinforcing members in a plate shape which are bridged between the pair of opposed faces parallel to each other of the voice coil bobbin; and a plurality of magnetic circuits having a gap for applying magnetic fluxes to at least a part of the voice coil.

Haut-parleur comprenant les éléments suivants : un boîtier; une membrane dont la forme planaire non-axisymétrique comprend un grand diamètre et un plus petit lorsque la membrane est vue d'une direction de vibration; un rebord en forme de bande placé autour d'une périphérie extérieure de la membrane, une périphérie extérieure du rebord étant raccordée au boîtier et une périphérie intérieure du rebord étant raccordée à la membrane; un bobinage de bobine mobile cylindrique de forme non-axisymétrique ayant un grand diamètre et un plus petit qui comprend deux faces opposées parallèles dans le sens du plus grand diamètre, une extrémité du bobinage étant raccordée à la membrane; une bobine mobile enroulée autour du bobinage; plusieurs éléments de renforcement en forme de plaque qui sont placés entre les deux faces opposées parallèles du bobinage; et plusieurs circuits magnétiques ayant un écartement pour exercer des flux magnétiques sur au moins une partie de la bobine mobile.

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