Title:
SOUND GENERATOR, AND ELECTRONIC PRODUCT COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2022/068081
Kind Code:
A1
Abstract:
Disclosed are a sound generator and an electronic product comprising same. The sound generator comprises: a housing; a magnetic circuit system located in the housing, the magnetic circuit system comprising a side magnetic portion and a central magnetic portion, the central magnetic portion comprising a support plate located at the middle position and two central magnets respectively located at two sides of the support plate, the central magnetic portion being of a structure that is hollow at the center, and a magnetic gap being formed between each central magnet and the side magnetic portion; and two groups of vibration component respectively located at the two sides of the support plate, each group of vibration component comprising a vibration diaphragm and a voice coil. The sound generator further comprises a centering structure located at an inner side of an edge of the centrally hollow portion of the central magnetic portion, wherein the centering structure comprises two short-circuit rings fixedly connected on central portions of the two vibration diaphragms, adjacent ends of the two short-circuit rings are overlapped in a radial direction to form a gap space, in which a magnetic liquid is contained. According to the present invention, the polarization generated during the vibration of the two vibration diaphragms in a bidirectional sound generator structure can be reduced, the distortion of the product is reduced, and the performance and stability of the product is improved.
Inventors:
ZHU XI (CN)
ZHOU CHANGGUO (CN)
LIU GUANGLEI (CN)
ZHOU CHANGGUO (CN)
LIU GUANGLEI (CN)
Application Number:
PCT/CN2020/136681
Publication Date:
April 07, 2022
Filing Date:
December 16, 2020
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/06
Foreign References:
| CN111901735A | 2020-11-06 | |||
| CN209283487U | 2019-08-20 | |||
| CN208489981U | 2019-02-12 | |||
| CN209731560U | 2019-12-03 | |||
| US20180234769A1 | 2018-08-16 |
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