Title:
SOUND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/062117
Kind Code:
A1
Abstract:
The present application provides a sound production device, which comprises a vibration system and a magnetic circuit system 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 at least three layers of layered structures stacked in a vibration direction of the vibration system, the winding coil number of the enameled wires of each layer of the layered structure is at least three, the voice coil input end and the voice coil output end both form wire outlet ends by extending from the coil of the outermost enameled wire in the direction perpendicular to the vibration direction of the vibration system, and the voice coil input end and the voice coil output end are each located on the same plane as any layer of a layered structure in the direction perpendicular to the vibration direction of the vibration system. Compared with the related art, the sound production device of the present application has better reliability.
Inventors:
HU JIN (CN)
DENG LEI (CN)
XIA XUE (CN)
DENG LEI (CN)
XIA XUE (CN)
Application Number:
PCT/CN2020/128314
Publication Date:
March 31, 2022
Filing Date:
November 12, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R9/04
Foreign References:
| CN109121050A | 2019-01-01 | |||
| CN111065030A | 2020-04-24 | |||
| CN105744445A | 2016-07-06 | |||
| CN111654792A | 2020-09-11 | |||
| JP2015070501A | 2015-04-13 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
Download PDF:
Previous Patent: SOUND PRODUCTION DEVICE
Next Patent: DEVICE AND METHOD FOR ONLINE DETECTION OF ELEMENTS IN LIQUID SAMPLE
Next Patent: DEVICE AND METHOD FOR ONLINE DETECTION OF ELEMENTS IN LIQUID SAMPLE