Title:
SOUND GENERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/140586
Kind Code:
A1
Abstract:
Disclosed in the present application is a sound generation device, comprising a basket, and a vibration system and a magnetic circuit system respectively fixed on the basket. The vibration system comprises a diaphragm fixed on the basket, a voice coil driving the diaphragm to vibrate and generate sound, and an elastic supporting assembly fixed on the basket and arranged opposite the diaphragm. The diaphragm comprises a first surround fixed on the basket, a first dome arranged at the center of the first surround and close to one side of the magnetic circuit system, and a second dome stacked on the first dome; the first dome comprises a dome body, a first wall formed by extending from one side, close to the voice coil, of the dome body to the voice coil, and a second wall bending and extending from a tail end of the first wall; and the second wall is connected to the voice coil through the first wall, the second wall is connected to the elastic supporting assembly and is spaced apart from the voice coil, the first wall is connected to a side surface of the voice coil, and the first wall and the second wall are used for hanging the voice coil below the diaphragm elastically. The sound generation device of the present application has good high-frequency performance and acoustic performance, and is highly reliable.
Inventors:
LIU XIAODONG (CN)
XIAO BO (CN)
LINGHU RONGLIN (CN)
XIAO BO (CN)
LINGHU RONGLIN (CN)
Application Number:
PCT/CN2019/113827
Publication Date:
July 09, 2020
Filing Date:
October 29, 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
Foreign References:
| CN109889964A | 2019-06-14 | |||
| CN109379681A | 2019-02-22 | |||
| CN208924468U | 2019-05-31 | |||
| CN208300011U | 2018-12-28 | |||
| US20120170791A1 | 2012-07-05 | |||
| CN206524953U | 2017-09-26 |
Attorney, Agent or Firm:
SHENZHEN CIPRUN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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