US 12,010,499 B2
Micro speaker with symmetrical voice coil and magnetic circuit
Zhenjin Zhu, Guangdong (CN); Yuanzhen Niu, Guangdong (CN); Jihui Zeng, Guangdong (CN); and Hong Wen, Guangdong (CN)
Assigned to Harman International Industries, Incorporated, Stamford, CT (US)
Appl. No. 17/614,926
Filed by HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED, Stamford, CT (US)
PCT Filed May 30, 2019, PCT No. PCT/CN2019/089298
§ 371(c)(1), (2) Date Nov. 29, 2021,
PCT Pub. No. WO2020/237575, PCT Pub. Date Dec. 3, 2020.
Prior Publication US 2022/0240020 A1, Jul. 28, 2022
Int. Cl. H04R 9/06 (2006.01); H04R 1/02 (2006.01); H04R 7/12 (2006.01); H04R 9/02 (2006.01); H04R 9/04 (2006.01)
CPC H04R 9/06 (2013.01) [H04R 1/028 (2013.01); H04R 7/12 (2013.01); H04R 9/025 (2013.01); H04R 9/046 (2013.01); H04R 2499/11 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A speaker, comprising:
a diaphragm;
a magnetic circuit structure including a magnet gap;
a voice coil suspended in the magnet gap, and
a middle gasket sandwiched between the diaphragm and the voice coil and being connected to the diaphragm and the voice coil,
wherein a distance between a top of the voice coil and a top of a top plate is equal a distance between a bottom of the voice coil and a bottom of the top plate in a vertical direction.