US 12,407,232 B2
Vibration motor
Zixu Hua, Shenzhen (CN); Junsheng Wang, Shenzhen (CN); Qiang Zhang, Shenzhen (CN); and Yanxue Zhi, Shenzhen (CN)
Assigned to AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed by AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed on Dec. 29, 2022, as Appl. No. 18/090,532.
Application 18/090,532 is a continuation of application No. PCT/CN2022/121785, filed on Sep. 27, 2022.
Claims priority of application No. 202222409094.0 (CN), filed on Sep. 9, 2022.
Prior Publication US 2024/0088767 A1, Mar. 14, 2024
Int. Cl. H02K 33/02 (2006.01); H02K 1/34 (2006.01)
CPC H02K 33/02 (2013.01) [H02K 1/34 (2013.01); H02K 2203/03 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A vibration motor, comprising;
a casing with an accommodating space;
elastic members;
a vibrator assembly movably connected to the casing via the elastic member, comprising:
a support assembly, two ends of the support assembly being fixedly connected to a corresponding elastic member, comprising:
a skeleton; and
an adhesive layer at least partially covered on an outer side of the skeleton; and
a coil nested outside the adhesive layer; and
a stator assembly fixed to the casing and configured to provide a driving force for the vibrator assembly to move along a vibration direction;
wherein the vibrator assembly, the stator assembly, and the elastic member are accommodated in the accommodating space; wherein the adhesive layer is extended towards an inner wall of the casing to form a contact portion; the vibration motor further comprises a flexible printed circuit, wherein one end of the flexible printed circuit is fixed to a side wall of the shell, and the other end of the flexible printed circuit is fixed to the contact portion; and the flexible printed circuit is electrically connected to the coil;
the vibrator assembly further comprises two mass blocks nested and fixed on an outer side of the adhesive layer and spaced apart from the coil, and a gap is provided between each of the mass blocks and an inner wall of the casing;
the stator assembly comprises a polar core fixed to the casing and a magnetic steel fixed at one side of the polar core close to the support assembly; the magnetic steel is located between the two mass blocks, and the magnetic steel is configured to provide a magnetic field.