Title:
LOUDSPEAKER
Document Type and Number:
WIPO Patent Application WO/2021/000109
Kind Code:
A1
Abstract:
The present utility model provides a loudspeaker, comprising an upper cover plate, a lower cover plate fitted to the upper cover and enclosing an accommodation space together with the upper cover plate, and a loudspeaker unit accommodated in the accommodation space. The loudspeaker unit divides the accommodation space into a front cavity and a rear cavity opposite thereto. The lower cover plate comprises a bottom wall and an enclosure extending from the bottom wall to the upper cover plate. The loudspeaker unit is fixed in the enclosure. The bottom wall, the enclosure, and the loudspeaker unit together match in the rear cavity to isolate a filling cavity. The filling cavity is filled with the sound absorption powder. The enclosure is provided with an opening communicating with the rear cavity and the filling cavity, and a first breathable isolation member sealing the opening. The present utility model increases the area and volume of the sound absorption powder filled in the loudspeaker, and therefore; the low frequency effect of the loudspeaker is improved after the loudspeaker is filled with the sound absorption powder.
Inventors:
WU JUN (CN)
Application Number:
PCT/CN2019/094007
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:
H04R9/02
Foreign References:
| CN106851493A | 2017-06-13 | |||
| CN109698994A | 2019-04-30 | |||
| CN206389547U | 2017-08-08 | |||
| CN206433142U | 2017-08-22 | |||
| US20180376241A1 | 2018-12-27 |
Attorney, Agent or Firm:
HENSEN INTELLECTUAL PROPERTY FIRM (CN)
Download PDF: