Rotary electric machine

摘要

An upper coil bar and lower coil bar are disposed in slots of an armature core. The upper coil bars have upper coil-end sections which extend radially from the outer periphery of the armature core and together from a commutator surface with which a brush member is in contact. The upper coil-end sections and coil-end sections of the lower coil bars are retained by a fixing cap fixed between a shaft of the rotary electric machine and the upper coil-end sections, and also by a spacer disposed between the upper coil-end sections and the lower coil-end sections so that the commutator surface can be maintained smooth even under conditions of thermal expansion or high-speed operation.