US 12,225,343 B2
Coaxial speaker
Fan Zhang, Shenzhen (CN); Xin Jin, Shenzhen (CN); and Wei Song, Shenzhen (CN)
Assigned to AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed by AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed on Jan. 16, 2023, as Appl. No. 18/097,457.
Application 18/097,457 is a continuation of application No. PCT/CN2022/121972, filed on Sep. 28, 2022.
Claims priority of application No. 202222114706.3 (CN), filed on Aug. 11, 2022.
Prior Publication US 2024/0056723 A1, Feb. 15, 2024
Int. Cl. H04R 1/24 (2006.01); H04R 9/02 (2006.01); H04R 9/04 (2006.01); H04R 9/06 (2006.01)
CPC H04R 1/24 (2013.01) [H04R 9/025 (2013.01); H04R 9/047 (2013.01); H04R 9/063 (2013.01); H04R 2400/11 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A coaxial speaker, comprising:
a magnetic circuit unit, comprising a magnetically conductive assembly and a magnet component, wherein the magnetically conductive assembly comprises a lower clamping plate, and the magnet component is located at the lower clamping plate;
a frame, comprising a first main body portion and a second main body portion that are arranged coaxially, wherein the second main body portion is connected to the magnetic circuit unit, and the first main body portion is connected to the second main body portion;
a first sound-producing unit, wherein the first sound-producing unit is provided with a first diaphragm, and the first diaphragm is connected to one side of the second main body portion away from the magnetic circuit unit;
a second sound-producing unit, comprising a second diaphragm, wherein the second diaphragm is located between the first main body portion and the second main body portion, and the second diaphragm is connected to one side of the first main body portion away from the magnetic circuit unit and the side of the second main body portion away from the magnetic circuit unit, respectively, wherein an inner diameter of the second diaphragm is greater than an outer diameter of the first diaphragm, and a sound-producing direction of the second sound-producing unit is the same as a sound-producing direction of the first sound-producing unit; and
wherein the magnetically conductive assembly further comprises a first magnetic conductor, a second magnetic conductor, and a third magnetic conductor,
wherein the third magnetic conductor is fixed to the lower clamping plate and extends towards the second main body portion, wherein the magnet component, the first magnetic conductor, and the second magnetic conductor are located in a space defined by the third magnetic conductor and the lower clamping plate, and wherein the magnet component comprises a first magnet and a second magnet,
wherein the first magnet, the first magnetic conductor, the second magnet, and the second magnetic conductor are successively arranged in an extension direction from the lower clamping plate towards the third magnetic conductor, the third magnetic conductor forms a magnetic gap with the magnet component, the first magnetic conductor, and the second magnetic conductor, respectively,
wherein the second sound-producing unit comprises a second voice coil, and at least part of the second voice coil is located in the magnetic gap corresponding to the first magnetic conductor, and wherein the first sound-producing unit comprises a first voice coil, at least part of the first voice coil is located in the magnetic gap corresponding to the second magnetic conductor.