Patent ID: 9191731
Filing Date: 2015-11-17
Classification: H04R

Abstract:
1. A dual-frequency coaxial earphone, comprising: an earphone housing, having a receiving space and an acoustic output orifice, the receiving space communicating with the acoustic output orifice; a moving coil loudspeaker unit, disposed in the receiving space, comprising a moving coil vibrating diaphragm and an acoustic transmitting member, the moving coil vibrating diaphragm being assembled to face to the acoustic output orifice and comprising a central vibrating portion, the acoustic transmitting member comprising an acoustic transmitting hole corresponding to the central vibrating portion; and a balanced armature loudspeaker unit, corresponding to the moving coil loudspeaker unit, comprising an armature vibrating diaphragm corresponding to the acoustic transmitting hole, so that the armature vibrating diaphragm and the moving coil vibrating diaphragm are respectively disposed at two ends of the acoustic transmitting member, wherein the balanced armature loudspeaker unit further comprises an armature, an armature magnet, an armature voice coil and a linking-up member, parts of the armature are inserted into the armature magnet and the armature voice coil, the linking-up member connects to the armature magnet and the armature vibrating diaphragm; wherein high frequency acoustic waves generated from the armature vibrating diaphragm are transmitted to the central vibrating portion through the acoustic transmitting hole so as to supplement high acoustic frequency extensions the moving coil vibrating diaphragm lacks.