Title:
SOUND PRODUCING UNIT AND LOUDSPEAKER
Document Type and Number:
WIPO Patent Application WO/2022/041295
Kind Code:
A1
Abstract:
Provided in the present utility model are a sound producing unit and a loudspeaker. The sound producing unit comprises a magnetic circuit system and a vibration system; the magnetic circuit system comprises a main magnet, secondary magnets and edge magnets, the secondary magnets are provided at the periphery of the main magnet, the secondary magnets and the main magnet are spaced apart and form first magnetic gaps, the edge magnets are provided at the periphery of the secondary magnets, and the edge magnets and the secondary magnets are spaced apart and form second magnetic gaps; the vibration system comprises a first vibrating diaphragm, a second vibrating diaphragm, a first voice coil and a second voice coil, the first vibrating diaphragm and the second vibrating diaphragm are respectively located at two opposite sides of the magnetic circuit system; the first voice coil is fixed to the first vibrating diaphragm, and the first voice coil extends into the first magnetic gaps; the second voice coil is fixed to the second vibrating diaphragm, and the second voice coil extends into the second magnetic gaps. The loudspeaker comprises a housing and the sound producing unit. In the magnetic circuit system, the secondary magnets are common magnets, have good magnetic circuit symmetry, and form a dual-vibrating diaphragm sound producing unit in conjunction with the first vibrating diaphragm, the second vibrating diaphragm, the first voice coil and the second voice coil.
Inventors:
HUI YAO (CN)
LINGHU RONGLIN (CN)
ZHANG ZIJIE (CN)
CHEN XINGCHI (CN)
LIU ZHIWEI (CN)
LINGHU RONGLIN (CN)
ZHANG ZIJIE (CN)
CHEN XINGCHI (CN)
LIU ZHIWEI (CN)
Application Number:
PCT/CN2020/112937
Publication Date:
March 03, 2022
Filing Date:
September 02, 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:
| CN111343542A | 2020-06-26 | |||
| CN111343549A | 2020-06-26 | |||
| CN111327999A | 2020-06-23 | |||
| CN107071669A | 2017-08-18 | |||
| CN204119458U | 2015-01-21 | |||
| CN206413193U | 2017-08-15 | |||
| US10631096B1 | 2020-04-21 | |||
| US10250994B2 | 2019-04-02 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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