Title:
SOUND GENERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/128331
Kind Code:
A1
Abstract:
Provided is a sound generation device, comprising a basin frame, a vibration system and a magnetic circuit system, wherein the magnetic circuit system is provided with a magnetic gap; the vibration system comprises a vibrating diaphragm, a voice coil, and an elastic member supporting assembly; the elastic member supporting assembly comprises an elastic member and an auxiliary vibrating diaphragm; the elastic member comprises a first fixing arm connected to the basin frame, a second fixing arm spaced apart from the first fixing arm, and a first elastic arm connecting the first fixing arm to the second fixing arm, the second fixing arm being connected to the voice coil; and the auxiliary vibrating diaphragm is attached to a side of the second fixing arm away from the vibrating diaphragm, and a projection of the first elastic arm in the vibration direction falls outside the range of the auxiliary vibrating diaphragm. Compared with the related art, the elastic member in the sound generation device of the present utility model has a large design freedom and better reliability.
Inventors:
SONG WEI (CN)
ZHANG FAN (CN)
JIN XIN (CN)
ZHANG FAN (CN)
JIN XIN (CN)
Application Number:
PCT/CN2019/129402
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:
H04R9/06; H04R7/16
Foreign References:
| CN208924467U | 2019-05-31 | |||
| CN109348373A | 2019-02-15 | |||
| CN109362002A | 2019-02-19 | |||
| CN109348370A | 2019-02-15 |
Attorney, Agent or Firm:
GUANGDONG GUANGHE LAW FIRM (CN)
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