US 12,335,703 B2
Multifunctional sounding device
Xin Jin, Changzhou (CN); Fan Zhang, Changzhou (CN); Wei Song, Changzhou (CN); and Ronglin Linghu, Changzhou (CN)
Assigned to AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed by AAC Microtech (Changzhou) Co., Ltd., Jiangsu (CN)
Filed on Jun. 26, 2023, as Appl. No. 18/341,747.
Application 18/341,747 is a continuation of application No. PCT/CN2022/134574, filed on Nov. 28, 2022.
Claims priority of application No. 202222871605.0 (CN), filed on Oct. 28, 2022.
Prior Publication US 2024/0147157 A1, May 2, 2024
Int. Cl. H04R 25/00 (2006.01); H04R 7/06 (2006.01); H04R 9/06 (2006.01)
CPC H04R 7/06 (2013.01) [H04R 9/06 (2013.01); H04R 2499/11 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A multifunctional sounding device, including:
a lower housing;
an upper housing engaging with the lower housing for forming a containment space;
a sound outlet penetrating the upper housing;
a sounding unit accommodated in the containment space, including a frame, a vibration system fixed to the frame, and a magnetic circuit system having a magnetic gap for driving the vibration system to vibrate;
a motor assembly accommodated in the containment space, including a vibration unit arranged on a side of the magnetic circuit system away from the vibration system, and an elastic member elastically suspending the vibration unit in the containment space; wherein
the magnetic circuit system includes a main magnetic circuit fixed to the lower housing, a first auxiliary magnetic circuit and a second auxiliary magnetic circuit respectively surrounding the main magnetic circuit for forming the magnetic gap;
the vibration unit including a driving coil fixedly connected to the second auxiliary magnetic circuit; and
the first auxiliary magnetic circuit includes a first auxiliary magnet, a first auxiliary pole plate fixed to the first auxiliary magnet for fixing the first auxiliary magnet to the lower housing.