Title:
LOUDSPEAKER AND MAGNETIC CIRCUIT SYSTEM THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/258354
Kind Code:
A1
Abstract:
Provided by the present utility model is a magnetic circuit system of a loudspeaker, the magnetic circuit system comprising a first clamp plate, a first magnetic steel mounted on the first clamp plate, and a pole core provided on the side, away from the first clamp plate, of the first magnetic steel, the magnetization direction of the first magnetic steel being perpendicular to the first clamp plate, and same being characterized in that the pole core is provided with a through hole penetrating therethrough; the magnetic circuit system further comprises an annular second magnetic steel mounted in the through hole; the second magnetic steel is magnetized along radial direction thereof, and the magnetic pole at the outer side of the second magnetic steel is the same as that at the side, close to the pole core, of the first magnetic steel. The magnetic permeability of the central region of the pole core is improved; by means of the configuration in which the magnetic pole at the outer side of the second magnetic steel is the same as that at the side, close to the pole core, of the first magnetic steel, the magnetic field inside the loudspeaker is optimized, and the magnetic field performance (BL) and the overall acoustic performance of the loudspeaker are improved.
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Inventors:
XIAO BO (CN)
LINGHU RONGLIN (CN)
ZHANG TONG (CN)
KONG CHENLIANG (CN)
LINGHU RONGLIN (CN)
ZHANG TONG (CN)
KONG CHENLIANG (CN)
Application Number:
PCT/CN2020/098201
Publication Date:
December 30, 2021
Filing Date:
June 24, 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
Foreign References:
| CN205017577U | 2016-02-03 | |||
| CN109889959A | 2019-06-14 | |||
| CN206879087U | 2018-01-12 | |||
| US20060233416A1 | 2006-10-19 |
Attorney, Agent or Firm:
SHENZHEN HUASHENG ZHIHUI INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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