Title:
VIBRATION DIAPHRAGM FOR SOUND-PRODUCING DEVICE AND SOUND-PRODUCING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/082253
Kind Code:
A1
Abstract:
Disclosed are a vibration diaphragm for a sound-producing device and a sound-producing device. The vibration diaphragm comprises at least one elastomer layer, wherein the elastomer layer is made of a butadiene rubber; and the butadiene rubber is any one of a nickel butadiene rubber, a rare earth butadiene rubber, and a cobalt butadiene rubber, and has a cis-form content of >80%-100%. The vibration diaphragm can still maintain a good acoustic performance under extreme conditions of low temperature.
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/CN2019/128172
Publication Date:
May 06, 2021
Filing Date:
December 25, 2019
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R7/04; B32B25/04; C08J5/18; C08L9/00; H04R7/10; H04R7/12; H04R9/02; H04R9/06
Domestic Patent References:
| WO2015132042A1 | 2015-09-11 |
Foreign References:
| CN106817658A | 2017-06-09 | |||
| CN106817658A | 2017-06-09 | |||
| CN106957466A | 2017-07-18 | |||
| CN109076289A | 2018-12-21 | |||
| CN109218924A | 2019-01-15 | |||
| CN110708636A | 2020-01-17 |
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