DC MOTOR AND ARMATURE STRUCTURE OF THE SAME

PROBLEM TO BE SOLVED: To provide a DC motor which can further reduce the size and weight. SOLUTION: A DC vibration motor is formed of a stator 1, a rotator 2 loaded to this stator 1 to freely rotate and a cylindrical cover 3 hermetically accommodating the rotor 2. The stator 1 includes four permanent magnets 12 allocated axially circular manner for magnetization. The rotor 2 is provided with an armature 22 eccentrically fixed to a part of the circumferential direction of a rotating shaft 21. The armature 22 is formed of the coaxially wound first coil 24 and second coil 25 and the small size third coil 26 allocated with eccentricity at the internal side of these coils 24, 25. A current is supplied to the coils 24, 25 and 26 through a brush 14 arranged with space phase angle of 90 degrees for commutators 23 which are divided into six portions in the rotating direction.