Patent ID: 11950071
Assignee: AAC MICROTECH (CHANGZHOU) CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An acoustic device, comprising:
a frame;
a vibration system supported on the frame, the vibration system comprising:
a diaphragm;
a voice coil assembly driving the diaphragm to generate sounds, the voice coil assembly comprising:
a first voice coil with an annular shape, the first voice coil comprising a first leading wire;
a second voice coil surrounding an outer periphery of the first voice coil;

a support assembly connecting the frame and the voice coil assembly, the support assembly comprising:
a flexible circuit board mounted on a side of the voice coil assembly away from the diaphragm, the flexible circuit board comprising:
a first fixing end secured to the frame;
a second fixing end secured to the voice coil assembly,
a connecting portion connecting the first fixing end and the second fixing end, and
a soldering pad extending from the connecting portion;

a support membrane mounted on a side of the flexible circuit board away from the frame;

a magnetic system supported on the frame;
wherein the first leading wire comprises a first extension part extending from a surface of the first voice coil closed to the diaphragm and extending out of an outer edge of the second voice coil, a second extension part bending and extending from the first extension part along an outer surface of the second voice coil, and a soldering part welding to the soldering pad.