Title:
LOUDSPEAKER
Document Type and Number:
WIPO Patent Application WO/2021/134310
Kind Code:
A1
Abstract:
Provided is a loudspeaker, comprising a frame provided with an accommodating cavity, and a magnetic circuit system and a vibration system which are accommodated in the accommodating cavity. The vibration system comprises an upper sound diaphragm fixed to the frame and used for vibrating to produce sound. The vibration system further comprises a framework connected to the upper sound diaphragm, a lower sound diaphragm arranged on two sides of the framework together with the upper sound diaphragm, and a conductive plate clamped between the framework and the lower sound diaphragm, wherein the lower sound diaphragm is provided with a first annular end portion fixed to the frame, and a second annular end portion connected to the conductive plate and suspended in the accommodating cavity; the conductive plate comprises a support arm arranged between the second annular end portion and the framework, an elastic arm extending outwards from the support arm, and a fixed arm extending outwards from the elastic arm and fixed to the frame; and the elastic arm is positioned outside the lower sound diaphragm and is suspended in the accommodating cavity. According to the present embodiment, the elastic arm is arranged outside the lower sound diaphragm, and when the amplitude of the loudspeaker is larger, the positions, in a height direction, of the elastic arm and the lower sound diaphragm are staggered, thereby ensuring that the elastic arm and the lower sound diaphragm cannot interfere with one another.
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Inventors:
GU XIAOJIANG (CN)
SHAO TAO (CN)
YAN XUDONG (CN)
SHAO TAO (CN)
YAN XUDONG (CN)
Application Number:
PCT/CN2019/130135
Publication Date:
July 08, 2021
Filing Date:
December 30, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R9/02; H04R7/16; H04R9/06
Foreign References:
| CN207869350U | 2018-09-14 | |||
| CN201937811U | 2011-08-17 | |||
| CN206894884U | 2018-01-16 | |||
| CN207835793U | 2018-09-07 | |||
| US20140247960A1 | 2014-09-04 | |||
| CN208638634U | 2019-03-22 | |||
| CN208908496U | 2019-05-28 |
Attorney, Agent or Firm:
GUANGZHOU YUEXIU JILY PATENT & TRADEMARK LAW OFFICE (CN)
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