Title:
SOUND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/217808
Kind Code:
A1
Abstract:
Disclosed is a sound production device. The sound production device comprises a sound production unit, several magnetic sound-absorbing particles and a housing provided with an accommodating cavity, wherein the sound production unit is accommodated in the accommodating cavity, the sound production unit divides the accommodating cavity into a front cavity and a rear cavity, the magnetic sound-absorbing particles fill the front cavity and/or the rear cavity, and a magnetic attraction force is provided between the several magnetic sound-absorbing particles. In the present invention, the magnetic sound-absorbing particles are used to achieve a virtual increase effect of a resonant space of an acoustic rear cavity of the sound production device, and the magnetic sound-absorbing particles are mutually attracted and attached together, thereby limiting free flow between the particles, reducing the phenomenon of magnetic sound-absorbing particle breakage, and effectively protecting the acoustic performance of the sound production device.
Inventors:
PAN QUANQUAN (CN)
LING FENGGUANG (CN)
LI CHUN (CN)
LING FENGGUANG (CN)
LI CHUN (CN)
Application Number:
PCT/CN2021/114492
Publication Date:
October 20, 2022
Filing Date:
August 25, 2021
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/02
Foreign References:
| CN207070333U | 2018-03-02 | |||
| CN113179469A | 2021-07-27 | |||
| CN113179470A | 2021-07-27 | |||
| CN109721292A | 2019-05-07 | |||
| CN211240037U | 2020-08-11 | |||
| US20190203029A1 | 2019-07-04 |
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