Title:
DIAPHRAGM OF SOUND PRODUCTION DEVICE AND SOUND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/082254
Kind Code:
A1
Abstract:
A diaphragm of a sound production device and a sound production device. The diaphragm comprises at least one elastomer layer. The elastomer layer is made of ethylene-vinyl acetate rubber. The ethylene-vinyl acetate rubber is formed by copolymerizing ethylene and vinyl acetate, and the content of the vinyl acetate is 30%-90% of the total amount of the ethylene-vinyl acetate rubber. The diaphragm has better acoustic performance.
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| JPS5349424 | DOME SPEAKER |
Inventors:
PENG WEIFENG (CN)
LING FENGGUANG (CN)
LI CHUN (CN)
LIU CHUNFA (CN)
LING FENGGUANG (CN)
LI CHUN (CN)
LIU CHUNFA (CN)
Application Number:
PCT/CN2019/128173
Publication Date:
May 06, 2021
Filing Date:
December 25, 2019
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R7/00; B32B25/04; C08K3/24; C08K3/26; C08K3/36; C08K5/14; C08K13/02; C08L23/08; G10K13/00; H04R7/04; H04R7/10
Domestic Patent References:
| WO2017186726A1 | 2017-11-02 | |||
| WO2009139045A1 | 2009-11-19 |
Foreign References:
| CN110818991A | 2020-02-21 | |||
| CN106957466A | 2017-07-18 | |||
| CN106957466A | 2017-07-18 | |||
| CN110049411A | 2019-07-23 | |||
| CN108966088A | 2018-12-07 |
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