Patent ID: 6873234

Claim:
A portable electronic device comprising a case and an electromagnetic actuator having a coil on which current is impressed, a magnet that forms a magnetic circuit between its poles across a magnetic gap with a magnet yoke, a diaphragm that vibrates by magnetic action when a high-frequency current is impressed and a vibration plate that vibrates by magnetic action when a low-frequency current is impressed, with the coil positioned within the magnetic gap and the coil, the magnet, the magnet yoke, the diaphragm, and the vibration plate are accommodated in a basket, the magnet is held in the magnet yoke and the magnet yoke holding the magnet is supported by the surface of the vibration plate, and the magnet, the magnet yoke and the vibration plate are assembled as a single unit, said electromagnetic actuator being mounted inside said case using a mounting structure comprising a first elastic packing sandwiched between an inner surface of said case and said basket of said electromagnetic actuator, and a second elastic packing held between said basket of said electromagnetic actuator and a substrate for mounting the electromagnetic actuator, so that the electromagnetic actuator and said substrate are mounted inside the portable electronic device.