Title:
SOUND-PRODUCING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/000870
Kind Code:
A1
Abstract:
Provided in the present application is a sound-producing device, which comprises a vibration system used for producing sound by vibrating and a magnetic circuit system for driving the vibration system to produce sound by vibrating. The vibration system comprises a diaphragm and a dome fitting the diaphragm. The diaphragm comprises a vibrating part, a folded ring part extending outwards from the periphery of the vibrating part, and a fixed part extending from the side of the folded ring part away from the vibrating part. The dome is affixed to the vibrating part. Multiple annular grooves formed by recessing in the direction of vibration of the vibrating part are provided at the side of the vibrating part in proximity to the dome. Multiple annular protruding parts formed by protruding in the direction of vibration are provided on the side of the vibrating part away from the dome. The multiple grooves extend in the circumferential direction of the vibrating part. The protruding parts and the grooves are directly opposite each other in a one-to-one correspondence. The dome is glued to the vibrating part and at least covers some of the grooves. Compared with the prior art, the reliability of the sound-producing device of the present application is improved.
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Inventors:
LU DONG (CN)
ZHANG CHAO (CN)
WANG CHANGLIANG (CN)
ZHANG CHAO (CN)
WANG CHANGLIANG (CN)
Application Number:
PCT/CN2020/122535
Publication Date:
January 06, 2022
Filing Date:
October 21, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R9/02
Domestic Patent References:
| WO2019128436A1 | 2019-07-04 |
Foreign References:
| CN209201336U | 2019-08-02 | |||
| CN208798189U | 2019-04-26 | |||
| CN109819379A | 2019-05-28 | |||
| US20180367904A1 | 2018-12-20 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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