Title:
SOUND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/062111
Kind Code:
A1
Abstract:
The present utility model provides a sound production device, which comprises a vibration system and a magnetic circuit system for driving the vibration system to vibrate and produce sound. The magnetic circuit system is provided with a magnetic gap, and the vibration system comprises a double-outgoing-line voice coil inserted into the magnetic gap; and the double-outgoing-line voice coil is formed by winding enameled wires and comprises a voice coil input end, a voice coil output end and a voice coil body which is connected to the voice coil input end and the voice coil output end and is of a hollow structure, wherein the voice coil body comprises a plurality of layers of layered structures which are wound and stacked in a vibration direction of the vibration system, the winding coil number of the enameled wires of each layered structure is at least three, the voice coil input end extends from the coil of the outermost enameled wire of one layer of the layered structure to form a wire outlet end, the voice coil output end extends from the coil of the middle enameled wire of one layer of the layered structure to form a wire outlet end, and the voice coil input end and the voice coil output end are each located on the same plane as one layer of the layered structure of the voice coil body. Compared with the related art, the sound production device of the present utility model has better reliability.
Inventors:
HU JIN (CN)
DENG LEI (CN)
XIA XUE (CN)
DENG LEI (CN)
XIA XUE (CN)
Application Number:
PCT/CN2020/128103
Publication Date:
March 31, 2022
Filing Date:
November 11, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R9/02; H04R9/04
Foreign References:
| CN109936800A | 2019-06-25 | |||
| CN107770688A | 2018-03-06 | |||
| JPH07298392A | 1995-11-10 | |||
| US20150281835A1 | 2015-10-01 | |||
| CN111654792A | 2020-09-11 | |||
| US20150245142A1 | 2015-08-27 | |||
| CN109362008A | 2019-02-19 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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