Title:
VIBRATING DIAPHRAGM FOR MINIATURE SOUND GENERATION DEVICE AND MINIATURE SOUND GENERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/082243
Kind Code:
A1
Abstract:
Disclosed in the present invention are a vibrating diaphragm for a miniature sound generation device and a miniature sound generation device. The vibrating diaphragm is made of polyether rubber. The polyether rubber comprises at least one of propylene oxide rubber, chloroether rubber and copolychloroether rubber. The range of the glass transition temperature of the vibrating diaphragm is -55 to 0°C. When the constant elongation rate of the vibrating diaphragm is 20%, the elastic recovery rate of the vibrating diaphragm is greater than 85%. The vibrating diaphragm provided in the present invention has better structural stability, anti-polarization capability and low-frequency sensitivity. The miniature sound generation device provided in the present invention has better acoustic performance.
Inventors:
HUI BING (CN)
LING FENGGUANG (CN)
LI CHUN (CN)
LIU CHUNFA (CN)
LING FENGGUANG (CN)
LI CHUN (CN)
LIU CHUNFA (CN)
Application Number:
PCT/CN2019/128038
Publication Date:
May 06, 2021
Filing Date:
December 24, 2019
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/06
Domestic Patent References:
| WO2006007268A1 | 2006-01-19 |
Foreign References:
| CN108551640A | 2018-09-18 | |||
| CN109810490A | 2019-05-28 | |||
| CN106817658A | 2017-06-09 | |||
| CN102686395A | 2012-09-19 |
Other References:
TAN YATING: "Study on the Vulcanization System of Epichlorohydrin Rubber", CHINESE MASTER'S THESES FULL-TEXT DATABASE, 1 May 2014 (2014-05-01), pages 1 - 75, XP055807411, ISSN: 1674-0246
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