US 12,407,975 B2
Coaxial speaker
Zhang Ren, Shenzhen (CN); Zhiwei Zhong, Shenzhen (CN); and Qi Wang, Shenzhen (CN)
Assigned to AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Appl. No. 17/913,850
Filed by AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
PCT Filed Jul. 20, 2022, PCT No. PCT/CN2022/106664
§ 371(c)(1), (2) Date Sep. 23, 2022,
PCT Pub. No. WO2024/000685, PCT Pub. Date Jan. 4, 2024.
Claims priority of application No. 202221717092.1 (CN), filed on Jun. 30, 2022.
Prior Publication US 2025/0133330 A1, Apr. 24, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. H04R 1/24 (2006.01); H04R 7/12 (2006.01); H04R 9/02 (2006.01); H04R 9/04 (2006.01); H04R 9/06 (2006.01)
CPC H04R 1/24 (2013.01) [H04R 7/127 (2013.01); H04R 9/025 (2013.01); H04R 9/045 (2013.01); H04R 9/06 (2013.01); H04R 2400/11 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A coaxial speaker, comprising:
a frame;
a magnetic circuit system mounted on the frame, the magnetic circuit system comprising a first magnetic gap and a second magnetic gap, the first magnetic gap located outside of the second magnetic gap;
a first vibration system fixed on one side of the magnetic circuit system and connected with the frame, the first vibration system comprising a first diaphragm and a first voice coil driving the first diaphragm to generate sounds, the first voice coil at least partially located into the first magnetic gap, the first diaphragm used for generating bass sound; and
a second vibration system fixed on the other side of the magnetic circuit system, the second vibration system located coaxially with and communicated with the first vibration system, the second vibration system comprising a second diaphragm and a second voice coil driving the second diaphragm to generate sounds, the second voice coil at least partially located into the second magnetic gap, the second diaphragm used for generating treble sound;
a sound hole provided on the first diaphragm for emitting the treble sound generated by the second diaphragm;
wherein the magnetic circuit system comprises a magnetic bowl, the magnetic bowl comprising a side wall enclosing a channel and a bottom wall bending and extending from an end of the side wall closed to the first diaphragm, the magnetic circuit system further comprising a first magnet assembly disposed on one side of the magnetic bowl and a second magnet assembly disposed on the other side of the magnetic bowl, the first magnet assembly comprising a first magnet, the second magnet assembly comprising a second magnet and a third magnet located outside of the second magnet and spaced apart from the second magnet, the first magnetic gap formed between the first magnet, the second magnet, and the third magnet, the second magnetic gap formed between the second magnet and the side wall of the magnetic bowl.