Title:
LOUDSPEAKER AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/021414
Kind Code:
A1
Abstract:
Provided in the present application are a loudspeaker and an electronic device. The loudspeaker comprises a loudspeaker housing, a magnetic circuit system, a diaphragm structure, and a driving rod. The magnetic circuit system, the diaphragm structure, and the driving rod are accommodated in the loudspeaker housing. The magnetic circuit system comprises a permanent magnet component, an electromagnetic coil, and an armature. The permanent magnet component is used to generate a fixed magnetic field, and the electromagnetic coil is used to generate an alternating magnetic field. The armature comprises a first armature part and a second armature part that are fixedly connected. The first armature part is accommodated in the electromagnetic coil, and the second armature part is accommodated in the permanent magnet component. The direction in which the first armature part extends towards the second armature part is a first direction, the width of the first armature part along a second direction is less than the width of the second armature part, and the diaphragm structure is fixed on an inner wall of the loudspeaker housing and is stacked with the electromagnetic coil along a third direction. Any two among the second direction, the third direction, and the first direction are perpendicular to one another, as such, lower resonance efficiency is attained, and the low-frequency performance of the speaker is improved.
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Inventors:
MOON JUNHYEOK (CN)
TSUNODA NAOTAKA (CN)
LI XIANSHENG (CN)
TSUNODA NAOTAKA (CN)
LI XIANSHENG (CN)
Application Number:
PCT/CN2020/106392
Publication Date:
February 03, 2022
Filing Date:
July 31, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04R31/00; H04R11/02
Foreign References:
| CN108028993A | 2018-05-11 | |||
| CN108574915A | 2018-09-25 | |||
| CN103747394A | 2014-04-23 | |||
| CN109891912A | 2019-06-14 | |||
| KR20170131918A | 2017-12-01 | |||
| CN104918171A | 2015-09-16 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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