Patent ID: 11917362
Assignee: AAC MICROTECH (CHANGZHOU) CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A speaker box, comprising:
a housing having a receiving room, the housing comprising a sound hole;
a speaker accommodated in the receiving room, the speaker comprising:
a frame;
a vibration system supported on the frame, the vibration system comprising:
a diaphragm dividing the receiving room into a front cavity communicating with the sound hole and a rear cavity opposite to the front cavity;
a voice coil assembly driving the diaphragm to generate sounds;

a magnetic circuit system supported on the frame, the magnetic circuit system comprising a yoke and a magnet assembly mounted on the yoke;
a covering shell mounted with the frame and the yoke, the covering shell dividing the rear cavity into a first rear cavity inside the speaker and a second rear cavity outside the speaker, a plurality of sound-absorbing particles filled in the second rear cavity, and the covering shell comprising a bottom wall connecting to the yoke and a side wall bending and extending from the bottom wall, a recessing portion formed by recessing from an edge of the side wall away from the bottom wall, and the recessing portion communicating the first rear cavity with the second rear cavity.