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Patent Searching and Data


Title:
SPEAKER DIAPHRAGM, LOUDSPEAKER, AND MANUFACTURING METHOD OF SPEAKER DIAPHRAGM
Document Type and Number:
Japanese Patent JP2019047151
Kind Code:
A
Abstract:
To provide a circumstance friendly speaker diaphragm capable of ensuring moisture resistance reliability and strength with large degree of freedom in sound quality adjustment while achieving light-weight and high rigidity at low cost.SOLUTION: A speaker diaphragm 100 comprises a resin 101 and a seed coat derived silica 102 dispersed in resin 101. The speaker diaphragm 100 is formed of a material in which a thermoplastic resin raw material is mixed with the seed coat derived silica 102, which are molded into pellets, and the pellets are injection-molded.SELECTED DRAWING: Figure 1

Inventors:
HIRAOKA HIDETOSHI
Application Number:
JP2017164554A
Publication Date:
March 22, 2019
Filing Date:
August 29, 2017
Export Citation:
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Assignee:
PANASONIC IP MAN CORP
International Classes:
H04R7/02; H04R31/00
Attorney, Agent or Firm:
Hiromori Arai
Eisaku Teratani
Shinichi Michisaka