Title:
LOUDSPEAKER
Document Type and Number:
WIPO Patent Application WO/2021/000117
Kind Code:
A1
Abstract:
The present application provides a loudspeaker, comprising a frame, and a vibration system and a magnetic circuit system separately fixed to the frame. The vibration system comprises a diaphragm fixed to the frame and a voice coil for driving the diaphragm to vibrate and produce sound; the diaphragm comprises a dome; the dome comprises a first layer, a second layer, and a third layer; the first layer, the second layer, and the third layer are sequentially stacked in a direction from the voice coil to the diaphragm; the second layer is a honeycomb structure; the third layer comprises a body part and multiple through holes passing through the body part in the vibration direction; the through holes are communicated with the honeycomb structure to form a resonant cavity. Compared with the related art, the loudspeaker provided by the present application is provided with the through holes communicated with the honeycomb structure to form a resonant cavity, so as to form a resonant sound-absorbing structure in a certain frequency range, and thus can effectively absorb sound energy in the front cavity within the frequency range.
Inventors:
QIU ZHIQIANG (CN)
LIU SHASHA (CN)
LIU SHASHA (CN)
Application Number:
PCT/CN2019/094015
Publication Date:
January 07, 2021
Filing Date:
June 29, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (CN)
AAC TECHNOLOGIES PTE LTD (CN)
International Classes:
H04R9/06
Foreign References:
| CN207968945U | 2018-10-12 | |||
| CN107257534A | 2017-10-17 | |||
| CN102026060A | 2011-04-20 | |||
| CN201657271U | 2010-11-24 | |||
| US20180007470A1 | 2018-01-04 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYUANLIHE PATENT AND TRADEMARK FIRM (GENERAL PARTNERSHIP) (CN)
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