Title:
SOUND PRODUCING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/128328
Kind Code:
A1
Abstract:
Provided is a sound producing device, comprising a basin frame, a vibration system, and a magnetic circuit system. The vibration system comprises: an upper diaphragm, which is fixed to the basin frame and jointly encloses to form an accommodating space, and a side of the upper diaphragm away from the magnetic circuit system communicates with the exterior and serves as an upper front cavity for sound production by the upper diaphragm; an annular lower diaphragm, an outer peripheral side of which is fixed to the basin frame; an upper skeleton connected to a voice coil and the upper diaphragm, and a lower skeleton connected to the lower diaphragm; and an annular isolating diaphragm, an outer peripheral side of which is connected to the basin frame, and an inner peripheral side of which is connected to the upper skeleton and the lower skeleton. The lower diaphragm, the lower skeleton, the isolating diaphragm, and the basin frame jointly divide the accommodating space into a lower front cavity used for sound production by the lower vibrating diaphragm and a rear cavity used for shared use by the lower vibrating diaphragm and the upper vibrating diaphragm. A sound producing hole is provided in the basin frame, and the sound producing hole places the lower front cavity in communication with the outside. Compared with the related technology, the sound producing device of the present invention has higher acoustic loudness and better acoustic performance.
Inventors:
SONG WEI (CN)
ZHANG FAN (CN)
JIN XIN (CN)
ZHANG FAN (CN)
JIN XIN (CN)
Application Number:
PCT/CN2019/129398
Publication Date:
July 01, 2021
Filing Date:
December 27, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R9/02; H04R9/06
Domestic Patent References:
| WO2017031861A1 | 2017-03-02 |
Foreign References:
| CN209375908U | 2019-09-10 | |||
| CN209448889U | 2019-09-27 | |||
| CN207835793U | 2018-09-07 | |||
| CN209823981U | 2019-12-20 |
Attorney, Agent or Firm:
GUANGDONG GUANGHE LAW FIRM (CN)
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