Patent ID: 7692345

Claim:
A vibration generating device including a rotor, and a stator for rotatably supporting the rotor, and serving to rotate the rotor to thereby generate vibration, wherein the rotor comprises a bearing sleeve comprising resin molded material and rotatably fitted over a fixed shaft vertically provided at the stator, a rotor yoke, a magnet, and a weight positioned in eccentric state with respect to the bearing sleeve, and the bearing sleeve and the rotor yoke are integrated by molding with adhesion of the rotor yoke to material resin of the bearing sleeve, wherein the stator comprises, in addition to the fixed shaft, a bottom plate, a cover plate formed by magnetic material, and a coil disposed in a manner opposite to the magnet; and wherein the coil is energized so that the rotor is rotated, and the bearing sleeve is rotated in the state in contact with the cover plate by attractive force exerted between the magnet and the cover plate.