US 12,267,660 B2
Speaker
Yang Shi, Shenzhen (CN); and Shuwen Wu, Shenzhen (CN)
Assigned to AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed by AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed on Dec. 28, 2022, as Appl. No. 18/090,460.
Application 18/090,460 is a continuation of application No. PCT/CN2022/125113, filed on Oct. 13, 2022.
Claims priority of application No. 202222130364.4 (CN), filed on Aug. 12, 2022.
Prior Publication US 2024/0056742 A1, Feb. 15, 2024
Int. Cl. H04R 7/12 (2006.01); H04R 7/06 (2006.01); H04R 9/02 (2006.01); H04R 9/04 (2006.01); H04R 9/06 (2006.01); H05K 1/18 (2006.01)
CPC H04R 9/046 (2013.01) [H04R 7/12 (2013.01); H04R 9/027 (2013.01); H04R 9/06 (2013.01); H05K 1/189 (2013.01); H04R 2499/11 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A speaker, comprising:
a frame,
a vibration system fixed to the frame, comprising a diaphragm fixed to the frame, a voice coil driving the diaphragm to vibrate and emit sounds, and a flexible circuit board fixedly connected with the voice coil, the flexible circuit board comprising a first fixing portion connected with the voice coil, a second fixing portion connected with the frame, and an elastic arm connected with the first fixing portion and the second fixing portion, and
a magnetic circuit system fixed to the frame, comprising a yoke with a through hole and a main magnet and a secondary magnet fixed to the yoke, the secondary magnet surrounding and spaced from the main magnet for forming a magnetic gap, the voice coil located in the magnetic gap, wherein
a projection of the elastic arm along a vibration direction of the diaphragm is at least partially located in the through hole, the speaker further comprises a connecting piece connected with an outer surface of the yoke, the connecting piece covers the through hole, the voice coil is runway-shaped, an amount of the flexible circuit boards is four, the four flexible circuit boards are respectively arranged at four corners of the voice coil, an amount of the through holes is four, the four through holes correspond to the four flexible circuit boards one by one, the connecting piece is one piece in a hollow ring structure, which comprises a main portion covering the four through holes and a connecting arm connecting with adjacent the main portion.