Search International and National Patent Collections

1. (WO2017150552) SPEAKER DIAPHRAGM, SPEAKER UNIT, AND RESIN FILM FOR SPEAKER DIAPHRAGM

Pub. No.:    WO/2017/150552    International Application No.:    PCT/JP2017/007892
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Mar 01 00:59:59 CET 2017
IPC: H04R 9/00
H04R 7/02
H04R 7/04
H04R 7/14
Applicants: SUMITOMO SEIKA CHEMICALS CO., LTD.
住友精化株式会社
OASA ELECTRONICS CO., LTD.
オオアサ電子株式会社
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
国立研究開発法人産業技術総合研究所
Inventors: HAYASHIZAKA Noriyuki
林坂 徳之
BANDO Seiji
坂東 誠二
NAGATA Katsushi
長田 克司
EBINA Takeo
蛯名 武雄
Title: SPEAKER DIAPHRAGM, SPEAKER UNIT, AND RESIN FILM FOR SPEAKER DIAPHRAGM
Abstract:
Disclosed is a speaker diaphragm 1 that comprises an accordion-folded film member which is folded back in a zig-zag pattern so that mountain sections, valley sections, and side-surface sections therebetween are repeatedly formed along a certain direction X. The gap between a pair of side-surface sections that face one another between neighboring mountain sections continuously widens from the valley section side to the mountain section side. The film member may also include an organic resin matrix and inorganic particles dispersed in the organic resin matrix.