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Title:
MANUFACTURE OF SPEAKER OSCILLATION STRUCTURE
Document Type and Number:
Japanese Patent JPS59188297
Kind Code:
A
Abstract:

PURPOSE: To obtain simultaneously low density, a high Young's modulus, and high internal loss by forming plural constitution members which include a diaphragm part by a material which turns into ceramic by baking, and baking the members after adhering and joining them.

CONSTITUTION: Cotton linters are dispersed in water to make wet paper, which is dehydrated sufficiently and then used partially for pressure molding by using a metallic die in the shape of a diaphragm 1, thus obtaining a paper molding after drying. A voice coil bobbin 2 made of the same material as this paper molding is adhered to the paper molding in the diaphragm shape by using a constituent liquid of an organic silicon polymer as an adhesive. This paper molding is dried and made infusible, and then heated and cooled. Thus, the oscillation structure of a speaker made of the silicon carbide-carbon composite material is obtained. Then, a voice coil bobbin 2 is wound with a voice coil 3.


Inventors:
OKAMURA KIYOTO
HASEGAWA YOSHIO
KUROO YOSHIYASU
KANEDA YORIAKI
Application Number:
JP1983000062776
Publication Date:
October 25, 1984
Filing Date:
April 08, 1983
Export Citation:
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Assignee:
TOKUSHU MUKI ZAIRYO KENKYUSHO
SONY CORP
International Classes:
H04R7/04; H04R7/12; H04R9/04; (IPC1-7): H04R7/04; H04R7/12
Domestic Patent References:
JPS5940799A1984-03-06



 
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