Title:
DIAPHRAGM FOR MINIATURE SOUND PRODUCTION DEVICE, AND MINIATURE SOUND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/216168
Kind Code:
A1
Abstract:
A diaphragm for a miniature sound production device, and a miniature sound production device. The diaphragm for a miniature sound production device is made of a polyacrylate copolymer; a plasticizer is mixed in the polyacrylate copolymer; the parts by weight of the polyacrylate copolymer itself are 100 parts; the plasticizer comprises at least one of an aliphatic dibasic acid ester, a phthalate, a trimellitate, a benzoate, a polyol ester, a chlorinated hydrocarbon, an epoxide, a citrate, and a polyester. The diaphragm has better acoustic performance.
Inventors:
HUI BING (CN)
WANG SHUQIANG (CN)
LING FENGGUANG (CN)
LI CHUN (CN)
LIU CHUNFA (CN)
WANG SHUQIANG (CN)
LING FENGGUANG (CN)
LI CHUN (CN)
LIU CHUNFA (CN)
Application Number:
PCT/CN2020/085558
Publication Date:
October 29, 2020
Filing Date:
April 20, 2020
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R7/04; H04R7/06; H04R31/00
Foreign References:
| CN109218924A | 2019-01-15 | |||
| CN106465015A | 2017-02-22 | |||
| CN106957466A | 2017-07-18 | |||
| CN106792377A | 2017-05-31 | |||
| US20180270577A1 | 2018-09-20 |
Other References:
See also references of EP 3962103A4
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