Patent ID: 11948549
Assignee: SOUND SOLUTIONS INTERNATIONAL CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H  F | IPC F  G  H

Claim 0:
1. An electromagnetic actuator, configured to be connected to a backside of a plate structure opposite to a sound emanating surface of the plate structure, the electromagnetic actuator comprising:
an annular coil arrangement; and
a magnet system configured to generate a magnetic field transverse to a longitudinal direction of a wire of the annular coil arrangement wound around an actuator axis, the magnet system comprising a movable part and a fixed part, the movable part being configured to move relative to the fixed part,
wherein the annular coil arrangement and the magnet system are connected to each other by a plurality of springs, the plurality of springs being arranged inside of the annular coil arrangement, and
wherein at least one of the annular coil arrangement, the movable part of the magnet system, and the fixed part of the magnet system, is fixedly arranged relative to the plate structure when the electromagnetic actuator is connected to the backside of the plate structure.