Title:
VIBRATING DIAPHRAGM FOR MINIATURE SOUND PRODUCING DEVICE AND MINIATURE SOUND PRODUCING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/216196
Kind Code:
A1
Abstract:
A vibrating diaphragm for a miniature sound producing device and the miniature sound producing device. The vibrating diaphragm for the miniature sound producing device is made of a polyacrylate copolymer; the polyacrylate copolymer is prepared by cross-linking polymerization of an alkyl acrylate as a polymerized main monomer with a cross-linking monomer; a reinforcing agent is mixed in the polyacrylate copolymer; the polyacrylate copolymer is 100 parts by mass and the reinforcing agent is 1-90 parts by mass; the loss factor of the diaphragm is greater than 0.06 and the Shore hardness range of the diaphragm is 15-90 A. 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/CN2020/085742
Publication Date:
October 29, 2020
Filing Date:
April 21, 2020
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R7/04; B32B25/04; C08K3/24; C08K3/26; C08K3/36; C08L33/08; C08L33/10; H04R7/10
Domestic Patent References:
| WO2010150203A1 | 2010-12-29 |
Foreign References:
| CN106957466A | 2017-07-18 | |||
| CN108966088A | 2018-12-07 | |||
| CN107948890A | 2018-04-20 | |||
| CN102582182A | 2012-07-18 | |||
| CN104683923A | 2015-06-03 | |||
| US20080199028A1 | 2008-08-21 |
Other References:
See also references of EP 3962106A4
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