US 11,770,655 B2
Sounding device
Wei Song, Shenzhen (CN); Xin Jin, Shenzhen (CN); and Zhiwei Zhong, Shenzhen (CN)
Assigned to AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed by AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed on Nov. 29, 2021, as Appl. No. 17/536,123.
Claims priority of application No. 202022845272.5 (CN), filed on Nov. 30, 2020.
Prior Publication US 2022/0174421 A1, Jun. 2, 2022
Int. Cl. H04R 9/06 (2006.01); H04R 9/02 (2006.01); H04R 1/02 (2006.01); H04R 31/00 (2006.01)
CPC H04R 9/06 (2013.01) [H04R 1/026 (2013.01); H04R 9/025 (2013.01); H04R 31/003 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A sounding device, comprising:
a frame, comprising a main body and two notches formed on the main body;
a vibration system fixed to the frame, comprising a diaphragm fixed to, a top of the main body and a voice coil driving the diaphragm to vibrate, each notch sunk from a bottom of the main body toward the diaphragm; and
a magnetic circuit system fixed to the frame for driving the vibration system to vibrate and emit sound, comprising:
a yoke, comprising a bottom wall, a side wall in an annular shape extending from an edge of the bottom wall toward the diaphragm, and two flanges respectively corresponding to the two notches and extending from ends of two opposite sides of the side wall close to the diaphragm toward the frame, wherein, an end of each flange away from the side wall is accommodated in one corresponding notch and is fixed to a bottom surface of the corresponding notch;
a magnet assembly fixed to the bottom wall; and
a magnetic gap formed by the magnet assembly and the side wall for receiving the voice coil.