SOUND PRODUCTION DEVICE

WIPO Patent Application WO/2022/110472

A1

Provided is a sound production device. The sound production device comprises a cone frame, and a vibrating system and a magnetic circuit system having a magnetic gap, which are respectively fixed to the cone frame, wherein the vibrating system comprises a vibrating diaphragm fixed to the cone frame, a voice coil inserted into the magnetic gap to drive the vibrating diaphragm to vibrate for sound production, and a framework fixedly arranged on the side of the vibrating diaphragm that faces the magnetic circuit system; the vibrating diaphragm comprises a diaphragm body fixed to the cone frame and having a cut center hole, and a dome arranged in the cut center hole; the dome is spaced apart from the diaphragm body; the diaphragm body and the dome are respectively bonded and fixed to the framework; the framework, the diaphragm body and the dome create an enclosure to form an adhesive dispensing recess; and the adhesive dispensing recess is filled with an adhesive. By means of the sound production device provided in the present invention, the sealed and waterproof design between a framework and a vibrating diaphragm can be realized, even though the bonding strength between a diaphragm body and the framework and that between the framework and a dome only reach the assembly strength.

SONG WEI (CN)
JIN XIN (CN)
ZHONG ZHIWEI (CN)

PCT/CN2020/140130

June 02, 2022

December 28, 2020

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AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)

H04R7/18; H04R9/02; H04R9/06

WO2020140181A1

2020-07-09

CN211531294U	2020-09-18
CN209201338U	2019-08-02
CN212034341U	2020-11-27

SHENZHEN ZICHEN INTELLECTUAL PROPERTY AGENCY LIMITED (CN)

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