Title:
LOUDSPEAKER BOX
Document Type and Number:
WIPO Patent Application WO/2022/067976
Kind Code:
A1
Abstract:
The present utility model provides a loudspeaker box, comprising a housing having an accommodating space, and a sound-producing unit; the sound-producing unit separates the accommodating space into a front sound cavity and a rear cavity opposite to the front sound cavity, the sound-producing unit comprises a basket, a vibration system fixed to the basket, and a magnetic circuit system for driving the vibration system to vibrate for producing sound; the magnetic circuit system comprises a magnetic yoke fixed at the side of the basket close to the rear cavity, and a magnetic steel unit component fixed at the side of the magnetic yoke away from the rear cavity; the magnetic yoke comprises a magnetic yoke bottom plate, magnetic yoke side walls extending from the magnetic yoke bottom plate in a bending manner, and magnetic yoke side plates extending from the magnetic yoke side walls in a bending manner; the ends of the magnetic yoke side plates away from the magnetic yoke side walls abut against the basket; and each magnetic yoke side plate is provided with an avoidance portion recessed from the side of the magnetic yoke side plate near the rear cavity to the direction close to the vibration system, the magnetic yoke, the basket and the housing together enclose the rear cavity, and the rear cavity is used for being filled with sound-absorbing particles. Compared with the related art, the loudspeaker box of the present utility model has better acoustic performance.
Inventors:
SONG WEI (CN)
LINGHU RONGLIN (CN)
XIAO BO (CN)
KONG CHENLIANG (CN)
ZHANG TONG (CN)
LINGHU RONGLIN (CN)
XIAO BO (CN)
KONG CHENLIANG (CN)
ZHANG TONG (CN)
Application Number:
PCT/CN2020/127835
Publication Date:
April 07, 2022
Filing Date:
November 10, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R9/02; H04R9/06
Foreign References:
| CN111343544A | 2020-06-26 | |||
| CN206433153U | 2017-08-22 | |||
| CN208940229U | 2019-06-04 | |||
| CN210093477U | 2020-02-18 | |||
| CN211321500U | 2020-08-21 | |||
| JPH05168079A | 1993-07-02 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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