US 12,483,836 B2
Coaxial speaker
Huhu Yang, Changzhou (CN); Wei Wei, Changzhou (CN); Zhaoyu Yin, Changzhou (CN); and Zhizhu Chen, 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. 18/533,115.
Application 18/533,115 is a continuation of application No. PCT/CN2023/087520, filed on Apr. 11, 2023.
Prior Publication US 2024/0348981 A1, Oct. 17, 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)] 8 Claims
OG exemplary drawing
 
1. A coaxial speaker, comprising:
a magnetic circuit system;
a support frame fixed to the magnetic circuit system;
a first sounding unit, comprising a first diaphragm and a first voice coil driving the first diaphragm for vibrating and sounding;
a second sounding unit surrounding the first sounding unit and arranged coaxially with the first sounding unit, comprising a second diaphragm and a second voice coil driving the second diaphragm for vibrating and sounding; and
an insert;
wherein the magnetic circuit system comprises a bottom plate provided with a through hole, a ring magnetic unit fixed to the bottom plate, a magnet fixed to the bottom plate and arranged on an outer side of the ring magnetic unit, and a yoke fixed to the magnet, the insert is inserted into an inner side of the ring magnetic unit through the through hole, the magnetic circuit system further comprises a first ring magnet sleeved on the insert, the first ring magnet comprises an inner surface and an outer surface opposite to the inner surface, magnetic polarities of the inner surface and the outer surface are opposite, the ring magnetic unit comprises a second ring magnet fixed to the bottom plate, a ring yoke fixed to the second ring magnet, and a third ring magnet fixed to the ring yoke, a first magnetic gap is formed by the first ring magnet together with the second ring magnet, the ring yoke and the third ring magnet, a second magnetic gap is formed by the ring magnetic unit together with the magnet and the yoke, the first voice coil locates in the first magnetic gap, the second voice coil locates in the second magnetic gap, an outer fixing part of the first diaphragm is fixed to the third ring magnet, an outer fixing part of the second diaphragm is fixed to the support frame, an inner fixing part of the second diaphragm is fixed to the third ring magnet.