Title:
ELECTROACOUSTIC TRANSDUCER, LOUDSPEAKER MODULE AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/104006
Kind Code:
A1
Abstract:
Disclosed is an electroacoustic transducer comprising a central magnet, two first side magnets, two second side magnets, a voice coil, a voice diaphragm and two flexible circuit boards. The two first side magnets are symmetrically arranged on two sides of the central magnet, a first gap is provided between each first side magnet and the central magnet, the two second side magnets are symmetrically arranged on the two sides of the central magnet, and the second side magnets are located on the sides, away from the central magnet, of the first side magnets. One end of the voice coil is partially located in the first gaps, and the voice diaphragm is fixedly connected to the other end of the voice coil. The two flexible circuit boards are symmetrically arranged on two sides of the central magnet, the flexible circuit boards are located on the sides, away from the central magnet, of the first side magnets and located between the second side magnets and the voice diaphragm, and the tail ends of two branches of each flexible circuit board are fixedly connected to two corners of the voice coil respectively. The electroacoustic transducer is high in magnetic induction intensity and good in sensitivity. Further provided in the embodiments of the present application are a loudspeaker module and an electronic device.
Inventors:
LIU JINHUA (CN)
Application Number:
PCT/CN2020/127758
Publication Date:
June 03, 2021
Filing Date:
November 10, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04R9/02; H04R9/04; H04R3/00; H04R7/12
Foreign References:
| CN110418259A | 2019-11-05 | |||
| CN110418256A | 2019-11-05 | |||
| CN110418255A | 2019-11-05 | |||
| CN110418261A | 2019-11-05 | |||
| CN110418254A | 2019-11-05 | |||
| US20170265007A1 | 2017-09-14 | |||
| CN201911194492A | 2019-11-28 |
Other References:
See also references of EP 4040802A4
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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