Title:
SOUND-PRODUCING APPARATUS, ACOUSTIC MODULE PROVIDED WITH SOUND-PRODUCING APPARATUS, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/062955
Kind Code:
A1
Abstract:
Provided in the present invention is a sound-producing apparatus, comprising a vibration assembly and a magnetic path assembly, the vibration assembly comprising a diaphragm, and the diaphragm vibrating to produce sound waves; a middle area of the magnetic path assembly is hollow to form an expansion cavity penetrating through the magnetic path assembly, a flexible deformation part being arranged on the area of the magnetic path assembly inside the expansion cavity; the flexible deformation part covers the end opening of the expansion cavity or the flexible deformation part divides the expansion cavity into two partial areas isolated from one another; and the flexible deformation part is arranged directly opposite to the diaphragm and can vibrate according to changes in air pressure. The present sound-producing apparatus increases the equivalent volume of the rear acoustic cavity of the sound-producing apparatus, and increases the low-frequency sensitivity of the sound-producing apparatus.
Inventors:
GE LIANSHAN (CN)
WANG XINGLONG (CN)
WANG XINGLONG (CN)
Application Number:
PCT/CN2019/127897
Publication Date:
April 08, 2021
Filing Date:
December 24, 2019
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R7/16; H04R7/26
Foreign References:
| CN110198510A | 2019-09-03 | |||
| CN105933832A | 2016-09-07 | |||
| CN109803215A | 2019-05-24 | |||
| CN207802348U | 2018-08-31 | |||
| US20020076068A1 | 2002-06-20 | |||
| US20180332397A1 | 2018-11-15 |
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