Title:
SOUND GENERATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/000157
Kind Code:
A1
Abstract:
Provided by the present application is a sound generating device. The sound generating device comprises a basin frame, and a vibration system and magnetic circuit system that are fixed to the basin frame. The magnetic circuit system comprises a magnetic yoke fixed to the basin frame, and a magnet portion fixed to the magnetic yoke. The vibration system comprises a sound diaphragm fixedly held on the basin frame, and the sound diaphragm comprises a vibration diaphragm fixedly held on the basin frame and a dome attached to a side of the vibration diaphragm close to the magnetic circuit system. The dome and the magnetic circuit system are spaced apart and form a gap. The sound generating device further comprises a through groove that is disposed to penetrate the magnetic yoke and the magnet portion in sequence. The sound generating device further comprises an air-permeable spacer that is installed in the magnetic circuit system and that correspondingly covers the through groove, and the through groove places the gap in communication with the outside by means of the air-permeable spacer. Compared with the related technology, the sound generating device provided by the present application allows air below the dome to be discharged promptly and effectively, thereby improving acoustic performance.
Inventors:
SHEN KAIHUA (CN)
CHEN ZHICHEN (CN)
CHEN ZHICHEN (CN)
Application Number:
PCT/CN2019/094057
Publication Date:
January 07, 2021
Filing Date:
June 30, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (CN)
AAC TECHNOLOGIES PTE LTD (CN)
International Classes:
H04R9/06
Foreign References:
| CN109348371A | 2019-02-15 | |||
| CN108810771A | 2018-11-13 | |||
| CN202818587U | 2013-03-20 | |||
| US20020071590A1 | 2002-06-13 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYUANLIHE PATENT AND TRADEMARK FIRM (GENERAL PARTNERSHIP) (CN)
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