Title:
SOUND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/114277
Kind Code:
A1
Abstract:
The present invention provides a sound production device, comprising a basket, a vibration system, and a magnetic circuit system driving the vibration system to vibrate to produce sound, wherein the vibration system and the magnetic circuit system are separately fixed to the basket. The vibration system comprises a diaphragm fixed to the basket and a voice coil assembly driving the diaphragm to vibrate to produce sound; the diaphragm comprises a surround and a dome attached and fixed to the surround; the surround comprises a vibration part, a surround part extending in a bent manner from the periphery of the vibration part, and a fixed part extending in a bent manner from the surround part toward the basket; the vibration part defines a through hole; the fixed part is fixed to the basket; the dome is attached and fixed to the vibration part and completely covers the through hole; the dome comprises a cover top part, and a connection part that extends in a bent manner from the periphery of the cover top part and is attached and fixed to the vibration part; the connection part obliquely extends from the vibration part in a direction close to or distant from the magnetic circuit system; the cover top part obliquely extends from the side of the connection part distant from the vibration part toward a direction distant from or close to the magnetic circuit system. Compared with the related art, the sound production device in the present invention has excellent acoustic performance.
Inventors:
SONG WEI (CN)
SHAO TAO (CN)
SHAO TAO (CN)
Application Number:
PCT/CN2019/125352
Publication Date:
June 17, 2021
Filing Date:
December 13, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R1/28; H04R9/02
Foreign References:
| CN209201336U | 2019-08-02 | |||
| CN209201320U | 2019-08-02 | |||
| CN207589164U | 2018-07-06 | |||
| US20170347203A1 | 2017-11-30 |
Attorney, Agent or Firm:
GUANGDONG GUANGHE LAW FIRM (CN)
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