Title:
SOUND PRODUCTION DEVICE AND VOICE COIL THEREOF, AND WINDING METHOD FOR VOICE COIL
Document Type and Number:
WIPO Patent Application WO/2022/007005
Kind Code:
A1
Abstract:
Provided are a sound production device and a voice coil thereof, and a winding method for the voice coil. The voice coil is provided with a through hole; the voice coil comprises a first voice coil, and a second voice coil fixedly connected to the first voice coil; the second voice coil comprises an inner layer, which is connected to the first voice coil and which forms the through hole with the first voice coil in an enclosed manner, and an outer layer, which is formed on a side of the inner layer away from the through hole; the outer layer is provided with a protruding part protruding out of the inner layer in the axis direction of the through hole; and the surface of a side of the first voice coil away from the through hole is coated with a protruding part connected to the first voice coil, wherein the number of single-layer turns of the outer layer is equal to the sum of the number of single-layer turns of the inner layer and the number of single-layer turns of the first voice coil. Compared with the related art, the sound production device and the voice coil thereof and the winding method for the voice coil in the present invention reduce the influence of the first voice coil on the second voice coil, thereby achieving the aim of regularizing the voice coil and improving the performance of the voice coil.
Inventors:
GU YUEMEI (CN)
CHEN JUN (CN)
LIAO HUANBIN (CN)
CHEN JUN (CN)
LIAO HUANBIN (CN)
Application Number:
PCT/CN2020/103898
Publication Date:
January 13, 2022
Filing Date:
July 23, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R9/06; H04R9/02
Foreign References:
| CN110149578A | 2019-08-20 | |||
| CN111294720A | 2020-06-16 | |||
| CN209562791U | 2019-10-29 | |||
| CN110166905A | 2019-08-23 | |||
| KR20190094904A | 2019-08-14 |
Attorney, Agent or Firm:
SHENZHEN ZICHEN INTELLECTUAL PROPERTY AGENCY LIMITED (CN)
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