Patent ID: 11949309
Assignee: AAC MICROTECH (CHANGZHOU) CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A linear vibration motor, comprising:
a casing with an accommodating space;
a vibration unit accommodated in the accommodating space;
an elastic member suspending the vibration unit in the accommodating space; and
a coil fixed to the casing and driving the vibration unit to vibrate;
wherein the casing comprises a copper ring arranged around the vibration unit;
the vibration unit comprises a magnetic steel assembly, wherein the magnetic steel assembly comprises a plurality of first magnetic steels arranged along a vibration direction of the vibration unit, the first magnetic steels are magnetized along a direction perpendicular to the vibration direction of the vibration unit, magnetization directions of two adjacent first magnetic steels are opposite, and the first magnetic steels together form a magnetic circuit the vibration unit further comprises a mass block sandwiched between two adjacent first magnetic steels and an annular connecting member connecting the first magnet steels and the elastic member.