US 12,477,279 B2
Multifunctional sounder
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. 18, 2023, as Appl. No. 18/542,827.
Application 18/542,827 is a continuation of application No. PCT/CN2023/087025, filed on Apr. 7, 2023.
Prior Publication US 2024/0340588 A1, Oct. 10, 2024
Int. Cl. H04R 7/04 (2006.01); H04R 9/06 (2006.01)
CPC H04R 7/04 (2013.01) [H04R 9/06 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A multifunctional sounder, comprising:
a casing, having an accommodating cavity;
a sounding unit, arranged in the accommodating cavity; and
at least one driving coil group, arranged in the accommodating cavity;
wherein the sounding unit includes a sounding diaphragm system and a magnetic circuit system configured to drive the sounding diaphragm system to vibrate and sound along a first direction;
wherein the magnetic circuit system includes a main magnet and at least one secondary magnet group arranged to surround the main magnet to form a magnetic gap, each secondary magnet group of the at least one secondary magnet group includes a plurality of secondary magnets arranged in a second direction, each two adjacent secondary magnets of the plurality of secondary magnets have polarities opposite to each other, and the second direction is perpendicular to the first direction; and
wherein each driving coil group of the at least one driving coil group includes at least one driving coil, each driving coil group of the at least one driving coil group corresponds to a respective secondary magnet group of the at least one secondary magnet group, and an orthographic projection of each driving coil group of the at least one driving coil group along the first direction misalign with the main magnet.