US 12,452,602 B2
Coaxial speaker
Chao Zhang, 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. 18/533,100.
Application 18/533,100 is a continuation of application No. PCT/CN2023/097398, filed on May 31, 2023.
Prior Publication US 2024/0406635 A1, Dec. 5, 2024
Int. Cl. H04R 9/02 (2006.01); H04R 7/18 (2006.01); H04R 9/04 (2006.01); H04R 9/06 (2006.01)
CPC H04R 9/025 (2013.01) [H04R 7/18 (2013.01); H04R 9/045 (2013.01); H04R 9/06 (2013.01); H04R 2400/11 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A coaxial speaker, comprising:
a first sounding unit, comprising a first diaphragm and a first voice coil driving the first diaphragm for vibrating and sounding towards the front of the coaxial speaker;
a second sounding unit arranged coaxially with the first sounding unit, comprising a second diaphragm and a second voice coil driving the second diaphragm for vibrating and sounding towards the back of the coaxial speaker;
a first frame;
a magnetic circuit system; and
a second frame;
wherein the magnetic circuit system and the first diaphragm are fixed to the first frame, the magnetic circuit system comprises a lower plate, two first magnets arranged on a surface of the lower plate close to the first diaphragm and spaced side-by-side along a long axis of the coaxial speaker, a first yoke arranged on surfaces of the two first magnets close to the first diaphragm, a second magnet arranged on a surface of the first yoke far away from the first diaphragm, two third magnets arranged on the surface of the first yoke far away from the first diaphragm and on both sides of the second magnet along a short axis of the coaxial speaker, a second yoke arranged on a surface of the second magnet far away from the first diaphragm, and two third yokes arranged on surfaces of the two third magnets far away from the first diaphragm, the second magnet and the two third magnets are arranged between the two first magnets, the lower plate is provided with a through hole arranged between the two first magnets, the second frame is arranged at the through hole and fixed to the magnetic circuit system, the second diaphragm is fixed to the second frame, the lower plate is further provided with two side walls extending along the long axis of the coaxial speaker and arranged opposite to each other, the first voice coil is arranged in a first gap formed by the two side walls together with the two first magnets and the two third magnets, the second voice coil is arranged in a second gap formed by the second magnet and the two third magnets.