Title:
VIBRATING DIAPHRAGM FOR SOUND GENERATING DEVICE AND SOUND GENERATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/273751
Kind Code:
A1
Abstract:
A vibrating diaphragm for a sound generating device and the sound generating device. The vibrating diaphragm is obtained by adding a damping additive, a filler, a structure control agent, and a cross-linking agent into a base polymer, mixing, and molding at 80°C-200°C. The damping additive is selected from one or more of polysiloxanes, and a main chain of the polysiloxane has structural formula (1) as shown in average composition formula 1, wherein an R group is one of formula (2), formula (3), and -C3H6NH2. The addition of the damping additive can improve damping of the vibrating diaphragm and reduce distortion of the sound generating device.
Inventors:
WANG TING (CN)
LI CHUN (CN)
WANG HAIFENG (CN)
LI CHUN (CN)
WANG HAIFENG (CN)
Application Number:
PCT/CN2022/095827
Publication Date:
January 05, 2023
Filing Date:
May 29, 2022
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/02; C08L83/04; H04R9/04; H04R9/06; H04R31/00
Foreign References:
| CN113490128A | 2021-10-08 | |||
| CN109195074A | 2019-01-11 | |||
| CN106188547A | 2016-12-07 | |||
| CN212034341U | 2020-11-27 | |||
| CN112280309A | 2021-01-29 | |||
| CN111935602A | 2020-11-13 | |||
| CN107868474A | 2018-04-03 | |||
| JPS56115100A | 1981-09-10 |
Other References:
ZHANG YING: "Synthesis and Research on Properties of High Damping Silicone Rubber", CHINESE MASTER'S THESES FULL-TEXT DATABASE, 30 May 2016 (2016-05-30), pages 1 - 91, XP093020062, ISSN: 1674-0246
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