Title:
SOUND-PRODUCING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/237836
Kind Code:
A1
Abstract:
Provided in the present utility model is a sound-producing device, which comprises a basket and, respectively supported and fixed on the basket, a vibration system and a magnetic circuit system for driving the vibration system to vibrate and produce sound. The vibration system comprises a diaphragm fixed on the basket. The sound-producing device also comprises a rear housing and a base. The rear housing comprises a rear housing plate arranged at the side of the basket away from the diaphragm and separated from the basket and a rear housing extension wall bent and extended from the peripheral edge of the rear housing plate along the periphery of the basket in the direction of the diaphragm. The base comprises a base plate and a base extension wall bent and extended from the base plate. The base extension wall is abutted against and fixed to the rear housing extension wall. The base extension wall and/or the rear housing extension wall are integrally formed with the basket. The rear housing, the basket, and the magnetic circuit system are joined together to form a rear acoustic cavity. The rear housing is provided with a leak hole. The leak hole puts the rear acoustic cavity in communication with the external environment. The base is provided with a sound-producing opening. The sound-producing opening is in communication with the diaphragm. Compared with the prior art, the sound-producing device of the present utility model has a simple structure, excellent acoustic performance, and great user experience.
Inventors:
CAO CHENGMING (CN)
WU SHUWEN (CN)
WU LIFENG (CN)
SHEN KAIHUA (CN)
WU SHUWEN (CN)
WU LIFENG (CN)
SHEN KAIHUA (CN)
Application Number:
PCT/CN2020/097134
Publication Date:
December 02, 2021
Filing Date:
June 19, 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; H04R1/20; H04R9/06
Foreign References:
| CN106973348A | 2017-07-21 | |||
| CN102790938A | 2012-11-21 | |||
| CN206575596U | 2017-10-20 | |||
| CN110234042A | 2019-09-13 | |||
| CN204598310U | 2015-08-26 | |||
| CN207070324U | 2018-03-02 | |||
| CN108322871A | 2018-07-24 | |||
| CN203618121U | 2014-05-28 | |||
| CN109040926A | 2018-12-18 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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