LOUDSPEAKER INNER CORE, LOUDSPEAKER MODULE AND ELECTRONIC DEVICE

WIPO Patent Application WO/2021/129263

A1

Provided in the present application is a loudspeaker inner core comprising a first frame, a first vibrating diaphragm, and a first piezoelectric element. The first vibrating diaphragm comprises a middle portion and an edge portion surrounding the middle portion, wherein the edge portion is mounted on the first frame, the first piezoelectric element is fixed to the surface of the middle portion facing the first frame or the surface of the middle portion facing away from the first frame, and the edge portion is made of aluminum, aluminum magnesium alloy or magnesium aluminum alloy. When the loudspeaker inner core of the present application is working, due to the fact that the edge portion made of aluminum, aluminum magnesium alloy or magnesium aluminum alloy is moderate in rigidity and low in density, the vibration amplitude of the first vibrating diaphragm under the drive of the first piezoelectric element can be effectively increased, the low-frequency sensitivity of the loudspeaker inner core is improved, the low frequency response of the loudspeaker inner core is improved, and the audio performance of the loudspeaker inner core is improved. Further provided in the present application are a loudspeaker module and an electronic device.

YU LIGANG (CN)
SU JIE (CN)
ZHANG BEI (CN)
JIN MINGYU (CN)
WU GUIMIN (CN)
SUN ZHENGBIN (CN)
GU LEI (CN)

PCT/CN2020/130382

July 01, 2021

November 20, 2020

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HUAWEI TECH CO LTD (CN)

H04R7/18

WO2016184080A1

2016-11-24

CN104869508A	2015-08-26
CN209462573U	2019-10-01
CN103024635A	2013-04-03
CN102104820A	2011-06-22

SCIHEAD IP LAW FIRM (CN)

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