US 12,143,792 B2
Micro speaker
Yao Hui, Shenzhen (CN); Xingchi Chen, Shenzhen (CN); and Weimin Chen, Shenzhen (CN)
Assigned to AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed by AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed on Aug. 4, 2022, as Appl. No. 17/880,698.
Prior Publication US 2023/0209272 A1, Jun. 29, 2023
Int. Cl. H04R 9/02 (2006.01)
CPC H04R 9/025 (2013.01) [H04R 2400/11 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A micro speaker, comprising:
a frame with a containment space;
a magnetic circuit system contained in the containment space;
a vibration system contained in the containment space, including a first diaphragm located on one side of the frame, a circuit board attached to the frame and arranged on a side of the first diaphragm close to the magnetic circuit system, a skeleton connected between the first diaphragm and the circuit board, and a voice coil fixed to a side of the skeleton close to the magnetic circuit system for driving the skeleton to vibrate;
a welding plate structure;
a balance component fixed to one side of the skeleton where the voice coil is located, for balancing the weight of the welding plate structure and the lead wire; wherein
the welding plate structure and the balance component are respectively located on opposite sides of the voice coil, and the voice coil includes a lead wire that is electrically connected to the welding plate structure;
wherein a material of the balance component includes sticky material or metal welding material.