Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent
1995-04-24
1997-09-02
Le, Huyen D.
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Having electrostatic element
381192, 381197, H04R 2500
Patent
active
056640242
ABSTRACT:
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.
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Search Report for European Appl. 95106124.1, mailed Jul. 27, 1995.
Furuta Akihiro
Iwasa Mikio
Mizone Shinya
Sakai Kuniaki
Satoh Kazue
Le Huyen D.
Matsushita Electric - Industrial Co., Ltd.
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