US 12,452,601 B2
Speaker
Ke Li, Changzhou (CN); Feng Zhang, Changzhou (CN); Zhaoyu Yin, Changzhou (CN); and Daxiang Ding, Changzhou (CN)
Assigned to AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed by AAC Microtech (Changzhou) Co., Ltd., Jiangsu (CN)
Filed on Nov. 28, 2023, as Appl. No. 18/522,179.
Application 18/522,179 is a continuation of application No. PCT/CN2023/121587, filed on Sep. 26, 2023.
Prior Publication US 2025/0106563 A1, Mar. 27, 2025
Int. Cl. H04R 9/02 (2006.01); H04R 9/04 (2006.01); H04R 9/06 (2006.01)
CPC H04R 9/025 (2013.01) [H04R 9/045 (2013.01); H04R 9/06 (2013.01); H04R 2400/11 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A speaker comprising: a frame, a vibration system, a magnetic circuit system having a magnetic gap and driving the vibration system to vibrate and sound, and a flexible circuit board embedded in the bottom end of the frame; the vibration system and the magnetic circuit system are respectively fixed at both ends of the frame and collectively enclosed into a sound producing cavity;
the vibration system includes a diaphragm fixed to the frame and a voice coil driving the diaphragm to vibrate and sound, with the voice coil inserted in the magnetic gap;
the magnetic circuit system comprises a lower clamping plate and a main magnet stacked and fixed to the lower clamping plate;
wherein, the lower clamping plate comprising a lower clamping body, two rectangular through-holes through the lower clamping body and respectively located on opposite sides of the main magnet, and two first flanges formed on one side of the rectangular through-holes adjacent to the main magnet and extending to the diaphragm; each first flange having a shape and size matching the corresponding rectangular through-hole; each of two first flanges spaced from the main magnet and forming the magnetic gap collectively; a portion of the lower clamping body located on the side of the rectangular through-hole away from the main magnet is square to and fixed to the frame and abuts against the flexible circuit board, and the rectangular through-hole is connected to the sound producing cavity to outside;
the speaker further comprising two breathable isolators fixed to the lower clamping body and covering each of the rectangular through-holes.