Patent ID: 7550893

Claim:
An armature comprising: a rotary shaft; a core fixed on the rotary shaft, the core having a body section and a plurality of tooth sections extending from the body section to an outside in a radial direction and arranged along a circumferential direction of the body section; a plurality of coils each provided around one of the tooth sections, the coils being formed by successively winding a conductor on the tooth section with at least one tooth section between each successive windings, such that each portion of the conductor extending between two tooth sections located with at least one tooth section therebetween forms a jumper wire extending in the circumferential direction of the core; and a commutator fixed on the rotary shaft, the commutator having a plurality of segments arranged along the circumferential direction of the commutator and a plurality of connecting members projecting to the outside in the radial direction of the commutator, each of the connecting members electrically connecting one of the segments to one of the jumper wires, and being arranged at a position corresponding to one of the jumper wires as viewed in an axial direction of the rotary shaft when the core and the commutator are attached to the rotary shaft; and an insulator mounted on the core so that each coil is wound on the corresponding tooth section via the insulator, the insulator having a guide wall for guiding the jumper wires, wherein each connecting member extends to the outside in the radial direction beyond the guide wall, and is connected to an intermediate portion in a longitudinal direction of the corresponding jumper wire.