SOUND PRODUCTION DEVICE

WIPO Patent Application WO/2022/126793

A1

Provided is a sound production device. The sound production device comprises a basket, and a vibration system and a magnetic circuit system which are fixedly connected to the basket. The vibration system comprises a diaphragm, a framework and a voice coil for driving the diaphragm to vibrate; the diaphragm comprises a dome and a main voice diaphragm which are sequentially arranged in a stacked manner; the main voice diaphragm comprises a folding ring portion, a first fixing portion located on the inner side of the folding ring portion, and a second fixing portion located on the outer side of the folding ring portion; the first fixing portion is provided with a first surface facing the dome, and a second surface facing away from the dome; the dome comprises a main body portion and a connecting portion extending out of the main body portion; the first surface is completely connected to the connecting portion of the dome; the second fixing portion is connected to the basket; the framework comprises a first connecting portion, and a first connecting sub-portion and a second connecting sub-portion which are connected to two sides of the first connecting portion and are arranged opposite each other, and the first connecting portion is connected to the second surface. According to the sound production device, the dome is maximized, and the sound production effect can be improved.

JIN XIN (CN)
ZHANG FAN (CN)
ZHONG ZHIWEI (CN)

PCT/CN2020/142156

June 23, 2022

December 31, 2020

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AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC MICROTECH CHANGZHOU CO LTD (CN)

H04R7/22; H04R7/12; H04R9/06

CN109803198A	2019-05-24
CN111405431A	2020-07-10
CN111405425A	2020-07-10
US20200213765A1	2020-07-02

PURPLEVINE INTELLECTUAL PROPERTY (SHENZHEN) CO., LTD. (CN)

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