ACOUSTIC DEVICE AND ELECTRONIC APPARATUS

WIPO Patent Application WO/2020/125619

A1

Disclosed by the present invention is an acoustic device, comprising a sound generating unit. The sound generating unit comprises a vibrating diaphragm, and sound waves at the front side of the vibrating diaphragm are radiated to the outside through a sound outlet disposed on the acoustic device; an airtight cavity is formed at the rear side of the vibrating diaphragm and is separated into a first airtight cavity and a second airtight cavity by a partition, the partition being at least partially flexibly deformable; the first airtight cavity is adjacent to the vibrating diaphragm, and the second airtight cavity is far away from the vibrating diaphragm, the volume of the second airtight cavity being larger than the volume of the first airtight cavity; the second airtight cavity encloses in the second airtight cavity the sound waves generated by the flexibly deformable portion during deformation. At least a part of the housing of an electronic apparatus for mounting the acoustic device is used to form the first airtight cavity and/or the second airtight cavity. The acoustic device in the present invention can effectively reduce the resonance frequency, and improve the overall low-frequency sensitivity of the product to a large extent.

WO/1997/009859	INERTIAL VIBRATION TRANSDUCERS
WO/1999/002012	PANEL-FORM LOUDSPEAKERS

LIU CHUNFA (CN)
XU TONGYAN (CN)
ZHANG CHENGFEI (CN)

PCT/CN2019/125916

June 25, 2020

December 17, 2019

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GOERTEK INC (CN)

H04R7/06

WO2008064294A2

2008-05-29

CN108462929A	2018-08-28
CN107371107A	2017-11-21
CN107318073A	2017-11-03
CN206274682U	2017-06-23

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