Title:
LOUDSPEAKER BOX
Document Type and Number:
WIPO Patent Application WO/2021/000101
Kind Code:
A1
Abstract:
Provided is a loudspeaker box, which comprises an upper cover, a lower cover that encloses to form an accommodating space together with the upper cover, and a sound generating unit accommodated in the accommodating space. The lower cover comprises a top wall, a side wall, and a supporting wall; the supporting wall is provided around the sound generating unit, and the sound generating unit divides the accommodating space into a front cavity and a rear cavity; and the side wall is provided with a sound emission hole. The lower cover further comprises a surrounding wall, and the loudspeaker box further comprises a sealing assembly covering the surrounding wall, the surrounding wall, the supporting wall and the sealing assembly enclosing to form a resonant cavity. The supporting wall is provided with a through hole, and the resonant cavity communicates with the front cavity by means of the through hole. The sealing assembly comprises a cover plate fixed on the surrounding wall and an air-permeable spacer disposed on the cover plate. The air-permeable spacer and the cover plate are bonded and fixed by means of an adhesive layer. The sealing assembly is provided with a leakage hole, and the leakage hole communicates with the rear cavity by means of the air-permeable spacer. In the present invention, the resonant cavity increases the cavity volume of the front cavity and improves high-frequency acoustic performance; meanwhile, the leakage hole on the sealing assembly may balance the air pressure inside of the loudspeaker box.
Inventors:
CHEN WEI (CN)
WU JUN (CN)
WU JUN (CN)
Application Number:
PCT/CN2019/093998
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:
H04R1/02
Foreign References:
| CN109218897A | 2019-01-15 | |||
| CN106101955A | 2016-11-09 | |||
| CN208479940U | 2019-02-05 | |||
| CN108989944A | 2018-12-11 | |||
| US20090200321A1 | 2009-08-13 |
Attorney, Agent or Firm:
HENSEN INTELLECTUAL PROPERTY FIRM (CN)
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