Title:
SOUND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/109096
Kind Code:
A1
Abstract:
Provided is a sound production device, comprising a basket, and a vibration system and a magnetic circuit system for driving the vibration system to vibrate and sound which are respectively fixed on the basket. The vibration system comprises a vibrating diaphragm fixed on the side of the basket away from the magnetic circuit system, and a voice coil for driving the vibrating diaphragm to vibrate and produce sound. The vibrating diaphragm, the basket and the magnetic circuit system together define a sound production inner cavity. The vibrating diaphragm comprises a vibrating portion, a folding ring portion which is bent outwards to extend from the periphery of the vibrating portion, and a fixing portion which is bent to extend from the side of the folding ring portion away from the vibrating portion, with the fixing portion being fixed on the basket. The vibrating diaphragm is made of a waterproof and air-permeable material, and air leakage of the sound production inner cavity is achieved by means of the vibrating diaphragm. Compared with related technology, the sound production device has a good waterproof performance, and is highly reliable.
Inventors:
ZHANG GUQING (CN)
Application Number:
PCT/CN2019/123462
Publication Date:
June 10, 2021
Filing Date:
December 06, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R7/00; H04R9/02; H04R9/06
Foreign References:
| CN110278517A | 2019-09-24 | |||
| CN109618269A | 2019-04-12 | |||
| CN101426165A | 2009-05-06 | |||
| US4239943A | 1980-12-16 |
Attorney, Agent or Firm:
GUANGDONG GUANGHE LAW FIRM (CN)
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