Title:
DIAPHRAGM OF SOUND EMISSION DEVICE, AND SOUND EMISSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/004340
Kind Code:
A1
Abstract:
A diaphragm of a sound emission device, and a sound emission device. The diaphragm comprises at least one elastomer layer (101, 103) and at least one damping adhesive layer (102). The elastomer layer (101, 103) and the damping adhesive layer (102) are composited to form the diaphragm. The damping adhesive layer (102) is made of a pressure sensitive adhesive. In the diaphragm, at least one of contact surfaces of the elastomer layer (101, 103) and the damping adhesive layer (102) has a surface roughness range of 0.3-2.0 μm. The diaphragm of a sound emission device exhibits favorable interface adherence and superior damping performance. The sound emission device can produce consistent vibrations and effectively reduce non-uniform vibration, thereby reducing distortion, and improving sound quality.
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Inventors:
WANG TING (CN)
LI CHUN (CN)
LI CHUN (CN)
Application Number:
PCT/CN2020/099446
Publication Date:
January 14, 2021
Filing Date:
June 30, 2020
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R7/10; B32B7/12
Domestic Patent References:
| WO2011096350A1 | 2011-08-11 |
Foreign References:
| CN110446143A | 2019-11-12 | |||
| CN108551641A | 2018-09-18 | |||
| CN108859296A | 2018-11-23 | |||
| CN205987355U | 2017-02-22 | |||
| CN1295103A | 2001-05-16 |
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