US 12,149,910 B2
Speaker
Yang Shi, Shenzhen (CN); and Jiasheng Zhou, 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. 18/090,458.
Application 18/090,458 is a continuation of application No. PCT/CN2022/125118, filed on Oct. 13, 2022.
Claims priority of application No. 202222343000.4 (CN), filed on Sep. 2, 2022.
Prior Publication US 2024/0080626 A1, Mar. 7, 2024
Int. Cl. H04R 9/06 (2006.01); H04R 9/02 (2006.01); H04R 9/04 (2006.01); H05K 1/18 (2006.01)
CPC H04R 9/06 (2013.01) [H04R 9/025 (2013.01); H04R 9/046 (2013.01); H05K 1/189 (2013.01); H04R 2499/10 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A speaker, comprising:
a frame,
a vibration system fixed to the frame, comprising a diaphragm fixed to the frame and a voice coil assembly driving the diaphragm to vibrate and emit sounds, and
a magnetic circuit system fixed to the frame, comprising a lower plate, a first main magnet and a first auxiliary magnet fixed to the lower plate, a main pole plate attached to a side of the first main magnet far away from the lower plate, and an upper plate attached to a side of the first auxiliary magnet far away from the lower plate, wherein
the upper plate comprises a body portion and a groove recessed from the body portion to the lower plate, the groove comprises a base, and a connecting arm connected with the body portion and the base, the base is closer to the body portion than the lower plate, the speaker further comprises a second auxiliary magnet located in the groove, the base is clamped between the first auxiliary magnet and the second auxiliary magnet.