Title:
SOUND GENERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/128329
Kind Code:
A1
Abstract:
Provided is a sound generation device, comprising a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system comprises: an upper vibrating diaphragm fixed to the basin frame and jointly enclosing an accommodating space, the side of the upper vibrating diaphragm away from the magnetic circuit system being in communication with the outside and serving as an upper front cavity for the upper vibrating diaphragm to generate sound; an annular lower vibrating diaphragm, an outer peripheral side of the lower vibrating diaphragm being fixed to the basin frame; an upper framework connected to a voice coil and the upper vibrating diaphragm, respectively; a lower framework connected to the lower vibrating diaphragm; and an annular isolation vibrating diaphragm, an outer peripheral side of the isolation vibrating diaphragm being connected to the basin frame, and an inner peripheral side thereof being connected to the upper framework and the lower framework. Compared with the related art, the sound generation device of the present invention has a higher acoustic loudness and a better acoustic performance.
More Like This:
Inventors:
SONG WEI (CN)
ZHANG FAN (CN)
JIN XIN (CN)
ZHANG FAN (CN)
JIN XIN (CN)
Application Number:
PCT/CN2019/129399
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
Foreign References:
| CN209375908U | 2019-09-10 | |||
| CN209823996U | 2019-12-20 | |||
| CN207835793U | 2018-09-07 | |||
| US20180220226A1 | 2018-08-02 |
Attorney, Agent or Firm:
GUANGDONG GUANGHE LAW FIRM (CN)
Download PDF: