Patent ID: 11968514
Assignee: AAC MICROTECH (CHANGZHOU) CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. The vibration sounding device as described in 3, wherein the first side wall includes a first side surface and a second side surface; the first side surface and the second side surface are directly connected or indirectly connected along a third direction perpendicular to the first and second directions; along the third direction, a distance between the first side surface and the first inner wall gradually decreases, and a distance between the second side surface and the first inner wall gradually increases;
and/or, the second side wall includes a third side surface and a fourth side surface; the third side surface and the fourth side surface are directly connected or indirectly connected along a third direction perpendicular to the first direction and the second direction; along the third direction, a distance between the third side surface and the second inner wall gradually decreases, and a distance between the fourth side surface and the second inner wall gradually increases.