Patent ID: 6891949

Claim:
A direct current vibration motor comprising: a stator formed of a permanent magnet magnetized in an axial direction so as to have magnetic poles at a plurality of locations in a circumferential direction, the magnet having a ring-like configuration or being arranged in a ring-like configuration; a rotor rotatably provided with respect to the stator and having an armature located opposite to the magnetized surface of the permanent magnet eccentrically fixed to the rotation shaft; and current path formation means comprising a commutator and a brush for forming a current path for supplying to the armature current whose polarity is subsequently reversed along with the rotation of the rotor; wherein the armature is provided with a first coil and a separate second coil arranged in such a manner that the spatial phase becomes equal to each other, and the current path formation means supplies the current to the first coil and the second coil respectively by making the electric phase different from each other; and wherein the second coil is coaxially wound around the inside of the first coil.