US 12,267,658 B2
Multifunctional sounding device
Yao Hui, Shenzhen (CN); and Jiujian Liu, Shenzhen (CN)
Assigned to AAC Technologies (Nanjing) Co., Ltd., Nanjing (CN)
Filed by AAC Technologies (Nanjing) Co., Ltd., Nanjing (CN)
Filed on Dec. 30, 2022, as Appl. No. 18/091,373.
Application 18/091,373 is a continuation of application No. PCT/CN2022/126304, filed on Oct. 20, 2022.
Claims priority of application No. 202211111102.1 (CN), filed on Sep. 13, 2022.
Prior Publication US 2024/0089661 A1, Mar. 14, 2024
Int. Cl. H04R 9/02 (2006.01)
CPC H04R 9/025 (2013.01) 9 Claims
OG exemplary drawing
 
1. A multifunctional sounding device comprising a housing having an accommodation space and a sounding unit fixedly accommodated in the accommodation space, the sounding unit comprising a basin frame and a vibration system and a magnetic circuit system having a magnetic gap respectively fixed to the basin frame, the vibration system being driven by the magnetic circuit system to vibrate and sound in a first direction, wherein
the magnetic circuit system is elastically connected to the housing by a plurality of elastic arms, and the magnetic circuit system has a through hole at a central position; and
the multifunctional sounding device further includes a motor assembly accommodated in the through hole, the motor assembly includes a coil unit fixed to the housing, and the coil unit is spaced apart from the magnetic circuit system and drives the magnetic circuit system to vibrate in a second direction, wherein the first direction is perpendicular to the second direction;
wherein the magnetic circuit system comprises a magnetic yoke fixed to the basin frame, a main magnetic steel plate fixed to the magnetic yoke, two secondary magnetic steel plates disposed on opposite sides of the main magnetic steel plate and spaced apart from the main magnetic steel plate to form the magnetic gap, a first soft magnetic steel plate in an annular shape, and a second soft magnetic steel plate in an annular shape; wherein
a magnetic yoke center hole penetrating through the magnetic yoke is provided at a central position of the magnetic yoke;
the main magnetic steel plate is in an annular shape and encloses a guide space, the main magnetic steel plate is fixed to the magnetic yoke and disposed around the magnetic yoke center hole, and the guide space communicates with the magnetic yoke center hole to collectively enclose the through hole;
the secondary magnetic steel plates are disposed on opposite sides of the magnetic yoke; and
the first soft magnetic steel plate is stacked and fixed on a side of the main magnetic steel plate away from the magnetic yoke, and the second soft magnetic steel plate is stacked and fixed on a side of a respective secondary magnetic steel plate away from the magnetic yoke.