Title:
SOUND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/040491
Kind Code:
A1
Abstract:
A sound production device provided in the present utility model comprises a basket, a magnetic circuit system, and a first vibration system and a second vibration system which are respectively arranged on two sides of the system. The magnetic circuit system comprises a first central magnetic yoke located at the central position, central magnetic steel fixed to the first central magnetic yoke, a side magnetic yoke annularly arranged around the central magnetic steel and fixed to the basket, and a connecting part connecting the first central magnetic yoke and the side magnetic yoke. The side magnetic yoke comprises a first side magnetic yoke fixed to the basket, and a second side magnetic yoke bent and extending from the edge of the first side magnetic yoke towards the central magnetic steel; and the connecting part connects the first central magnetic yoke and the second side magnetic yoke. The side magnetic yoke structure comprising the first side magnetic yoke and the second side magnetic yoke is arranged on the basket to form a magnetic gap with the central magnetic steel, so that the size of the magnetic circuit system is reduced while good magnetic field performance is ensured, thus reducing the size of the whole sound production device, and conforming to the current development trend of miniaturization.
Inventors:
LV XUEDONG (CN)
FENG XIAOQIONG (CN)
YANG KUN (CN)
HUANG ZHEN (CN)
SHAO YI (CN)
FENG XIAOQIONG (CN)
YANG KUN (CN)
HUANG ZHEN (CN)
SHAO YI (CN)
Application Number:
PCT/CN2022/114674
Publication Date:
February 29, 2024
Filing Date:
August 25, 2022
Export Citation:
Assignee:
AAC MICROTECH CHANGZHOU CO LTD (CN)
International Classes:
H04R1/28
Domestic Patent References:
| WO2008004272A1 | 2008-01-10 |
Foreign References:
| CN213126461U | 2021-05-04 | |||
| CN108322869A | 2018-07-24 | |||
| CN211209914U | 2020-08-07 |
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