US 12,452,603 B2
Double-sided sounding device
Long Zhang, Changzhou (CN); Yu Qi, Changzhou (CN); and Xiwen Du, Changzhou (CN)
Assigned to AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed by AAC Microtech (Changzhou) Co., Ltd., Jiangsu (CN)
Filed on Dec. 7, 2023, as Appl. No. 18/533,105.
Application 18/533,105 is a continuation of application No. PCT/CN2023/087547, filed on Apr. 11, 2023.
Prior Publication US 2024/0348980 A1, Oct. 17, 2024
Int. Cl. H04R 9/02 (2006.01); H04R 7/12 (2006.01); H04R 9/06 (2006.01)
CPC H04R 9/025 (2013.01) [H04R 7/12 (2013.01); H04R 9/06 (2013.01); H04R 2209/022 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A double-sided sounding device, comprising:
an upper frame;
a lower frame arranged on a lower side of the upper frame;
an upper vibration system fixed to an upper side of the upper frame;
a lower vibration system fixed to a lower side of the lower frame; and
a magnetic circuit system arranged between the upper vibration system and the lower vibration system;
wherein the upper vibration system comprises an upper diaphragm and an upper voice coil driving the upper diaphragm for vibrating and sounding, the lower vibration system comprises a lower diaphragm and a lower voice coil driving the lower diaphragm for vibrating and sounding, the upper voice coil comprises a first voice coil and a second voice coil respectively arranged on two opposite sides of the lower voice coil along a direction of a long axis of the double-sided sounding device.