MULTI-FUNCTIONAL SOUND PRODUCTION DEVICE

WIPO Patent Application WO/2024/087300

A1

Provided in the present utility model is a multi-functional sound production device. The multi-functional sound production device comprises a lower shell, an upper shell, which defines an accommodating space together with the lower shell, and a sound production unit, wherein the upper shell is provided with a sound outlet; the sound production unit comprises a basket, a vibration system, and a magnetic circuit system with a magnetic gap; the magnetic circuit system comprises a primary magnetic circuit, a first secondary magnetic circuit and a second secondary magnetic circuit; and the first secondary magnetic circuit comprises first secondary magnetic steel and a first secondary pole core, and the first secondary magnetic steel is fixed to the upper shell by means of the first secondary pole core. The multi-functional sound production device further comprises a motor assembly, wherein the motor assembly comprises vibration units and elastic members; and the vibration units each comprise a driving coil. The multi-functional sound production device of the present utility model not only simplifies a fixing means for the magnetic circuit system, but also reduces the requirements for the dimensional precision of the magnetic circuit system, thereby meeting the requirements for mass production.

JPS5927695

[Title of the device] The voice coil bobbin for speakers

JIN XIN (CN)
ZHANG FAN (CN)
SONG WEI (CN)
LINGHU RONGLIN (CN)

PCT/CN2022/134611

May 02, 2024

November 28, 2022

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AAC MICROTECH CHANGZHOU CO LTD (CN)

H04R9/06; H04R9/02

WO2022166375A1

2022-08-11

CN109889959A	2019-06-14
CN215935086U	2022-03-01
US20180213329A1	2018-07-26

SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)

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