Patent ID: 9591407
Date: 2017-03-07
CPC Classifications: H04R

Claim:
1. An electromagnetic speaker, comprising: a frame having an elongated axis; a vibration unit accommodated in the frame, the vibration unit comprising a magnet assembly, the vibration unit further including a passage; a spring elastically deformable along the elongated axis and elastically suspending the magnet assembly in the frame; a guiding pole sleeved by the spring and at least partially passing through the passage for providing a guidance to the vibration unit; the vibration unit movable along the elongated axis of the frame by sliding along the guiding pole; a voice coil fixed relative to the frame and surrounding the magnet assembly, the voice coil keeping a distance from the magnet assembly; a diaphragm in contact with the vibration unit, and driven by the movement of the magnet assembly along the elongated axis of the frame for producing and radiating sounds along a direction parallel to the guiding pole.