Armature of a rotary electric machine with a commutator and a conductor for the armature coil

Claim 1

An armature of a rotary electric machine comprising: an iron core of a cylindrical shape having a plurality of slots extending in an outer periphery thereof at an equal distance relative to each other in an axial direction of the iron core; an armature coil comprising unit coils of a lower coil and an upper coil inserted in said slots; an armature shaft extending along the axial direction of said iron core; a plurality of commutator segments electrically connected to crossover portions coupled to said unit coils and arranged at an equal distance around said armature shaft; and an insulating resin charged between said iron core and said armature shaft, in the slots of said iron core, between said commutator segments, between said commutator segments and said armature shaft, and between the crossover portions coupled to said unit coils; and holding members including arms for holding said upper coil and said lower coil of said unit coils and an annular portion for coupling and for fastening the arms, and wherein said insulating resin, mixed with a magnetic powder for establishing a magnetic path, is filled between said upper coil, said lower coil and said holding members.