LOUDSPEAKER BOX - AAC ACOUSTIC TECH SHENZHEN CO LTD

Title:

LOUDSPEAKER BOX

Document Type and Number:

WIPO Patent Application WO/2021/000105

Kind Code:

A1

Abstract:

Provided by the present application is a loudspeaker box. The loudspeaker box comprises an upper housing, a lower housing which coordinates with the upper housing to form an accommodation space, and a sounding unit accommodated in the accommodation space. The sounding unit divides the accommodation space into a front vocal cavity and a rear vocal cavity. The upper housing comprises a top wall, a support wall extending from the top wall to the direction of the lower housing, and a through hole penetrating the top wall to communicate with the front vocal cavity; the support wall is arranged around the through hole, the top wall is formed with a concave part on a side away from the sounding unit, and the concave part is provided with an opening towards the top wall and away from the sounding unit. The loudspeaker box further comprises a metal insert for sealing and covering the through hole and the opening. A resonant cavity is formed between the concave part and the metal insert, and the resonant cavity is communicated with the front vocal cavity. Compared with the relevant technologies, the loudspeaker box provided in the present application may effectively reduce high frequency resonance peak and sensitivity, thereby improving the acoustic performances.

Inventors:

REN LI (CN)
WU JUN (CN)

Application Number:

PCT/CN2019/094002

Publication Date:

January 07, 2021

Filing Date:

June 29, 2019

Export Citation:

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Assignee:

AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (CN)

International Classes:

H04R1/28

Foreign References:

CN109218895A	2019-01-15
CN108055615A	2018-05-18
JP2008135864A	2008-06-12