Title:
SOUND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/237837
Kind Code:
A1
Abstract:
The present utility model provides a sound production device, comprising a sound production unit. The sound production unit comprises a vibrating diaphragm, and a front cover fixed on a side of the sound production unit that is close to the vibrating diaphragm, with the front cover and the vibrating diaphragm jointly defining a sound outlet cavity. The sound production device further comprises a rear housing fixedly connected to the front cover and arranged around the sound production unit. The front cover comprises a front cover plate partially fixed on the sound production unit, and a sound outlet hole penetrating the front cover plate; and the sound outlet cavity is in communication with the outside by means of the sound outlet hole. The rear housing comprises a rear housing plate spaced apart from the sound production unit, and a rear housing extending wall which is formed by means of bending and extending from the rear housing plate to the front cover along a peripheral side of the sound production unit; the rear housing extending wall is fixedly connected to a bottom surface of the side of the front cover plate close to the vibrating diaphragm, and forms a seal with the front cover plate; and the rear housing and the sound production unit jointly define a rear sound cavity, the sound production unit is provided with a leakage part which is in communication with the rear sound cavity, and the rear housing is provided with a leakage hole enabling the rear sound cavity to be in communication with the outside. Compared with the related art, the sound production device of the present utility model is simple in structure, excellent in acoustic performance and good in user experience effect.
Inventors:
CAO CHENGMING (CN)
SHEN KAIHUA (CN)
WU SHUWEN (CN)
WU LIFENG (CN)
SHEN KAIHUA (CN)
WU SHUWEN (CN)
WU LIFENG (CN)
Application Number:
PCT/CN2020/097136
Publication Date:
December 02, 2021
Filing Date:
June 19, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R1/20
Domestic Patent References:
| WO2018218766A1 | 2018-12-06 |
Foreign References:
| CN106973348A | 2017-07-21 | |||
| CN207926912U | 2018-09-28 | |||
| CN207354602U | 2018-05-11 | |||
| CN208479940U | 2019-02-05 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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