US 12,108,233 B2
Loudspeaker and electronic apparatus
Xiulu Jin, Beijing (CN); Yunfeng Jiao, Beijing (CN); and Ting Wang, Beijing (CN)
Assigned to BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
Filed by BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
Filed on Mar. 29, 2022, as Appl. No. 17/707,713.
Claims priority of application No. 202111250614.1 (CN), filed on Oct. 26, 2021.
Prior Publication US 2023/0128831 A1, Apr. 27, 2023
Int. Cl. H04R 9/02 (2006.01); H04R 9/04 (2006.01); H04R 9/06 (2006.01); H04R 31/00 (2006.01)
CPC H04R 9/027 (2013.01) [H04R 9/04 (2013.01); H04R 9/06 (2013.01); H04R 31/006 (2013.01); H04R 2209/022 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A loudspeaker, comprising:
a magnetic circuit assembly with a magnetic flux space;
a vibrating diaphragm covering a first end of the magnetic flux space; and
a voice coil assembly in the magnetic flux space and coupled to a side of the vibrating diaphragm facing the magnetic flux space, wherein the voice coil assembly comprises at least two groups of conductive coils and a heat accumulator in thermally conductive contact with the at least two groups of conductive coils, and the heat accumulator absorbs and accumulates heat when a temperature of the voice coil assembly reaches a target temperature,
wherein the voice coil assembly further comprises a wire fixing body that is an adhesive body, and the at least two groups of conductive coils are bonded to the adhesive body;
the at least two groups of conductive coils are wound coaxially and nested in an inner-outer direction, and the adhesive body is between every two adjacent groups of conductive coils;
heat accumulators are scattered within the adhesive body; and
the voice coil assembly further comprises a lightweight fiber body, a first end of the lightweight fiber body being attached to a surface of the voice coil assembly and a second end of the lightweight fiber body being free in the magnetic flux space, and the lightweight fiber body being swingable with axial vibration of the voice coil assembly.