When teeth (12) are allocated in a circumferential direction in sequence of a U phase, a V phase and a W phase, a forward wound coil wound on each of the phases is provided as a coil of the U phase, the V phase and the W phase, and a reverse wound coil wound on each of the phases is provided as the coil of a −U phase, a −V phase and a −W phase, the coils are electrically connected between the neighboring segments in an order of the U phase, the −W phase, the −W phase, the V phase, the −U phase, the −U phase, the W phase, the −V phase and the −V phase, and the wire (14) drawn between the armature core (8) and the commutator (10) is drawn around the rotation shaft in the same direction.