Title:
DIAPHRAGM APPLIED TO SOUND PRODUCING DEVICE, SOUND PRODUCING DEVICE, AND METHOD FOR ASSEMBLING SAME
Document Type and Number:
WIPO Patent Application WO/2020/037899
Kind Code:
A1
Abstract:
A diaphragm applied to a sound producing device, a sound producing device, and a method for assembling the same. The diaphragm comprises a film layer prepared by means of a crosslinking reaction of at least one of an ethylene-acrylate copolymer and an ethylene-acrylate-carboxylic acid copolymer. The molecular structure of the diaphragm comprises a vinyl-acrylic group. The group causes the material to have a less symmetrical chemical structure, a reduced tacticity and an increased steric hindrance, such that the diaphragm has a high loss factor, and the sound producing device achieves a good damping effect.
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Inventors:
LING FENGGUANG (CN)
WANG SHUQIANG (CN)
LI CHUN (CN)
LIU CHUNFA (CN)
WANG SHUQIANG (CN)
LI CHUN (CN)
LIU CHUNFA (CN)
Application Number:
PCT/CN2018/121123
Publication Date:
February 27, 2020
Filing Date:
December 14, 2018
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R31/00; H04R7/04
Foreign References:
| CN106465015A | 2017-02-22 | |||
| CN106817658A | 2017-06-09 | |||
| CN108243371A | 2018-07-03 | |||
| CN106060721A | 2016-10-26 | |||
| CN107211217A | 2017-09-26 | |||
| CN206024094U | 2017-03-15 | |||
| US20170078799A1 | 2017-03-16 |
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