| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor armature to which a resin-molded insulator, which is heat-resistant and economical is attached. SOLUTION: The resin-molded insulator 60, attached to the motor armature 10, has a shaft insulation part 62 provided between a rotary shaft 20 and a winding 50, a core end surface insulation part 64 provided between an end surface 42 in an axial direction of a core 40 and the winding 50, and a slot insulation part 66 provided between slots of the core 40 and the winding 50. Fins 68, which cool down commutators 30 and feeding brushes pressed against the commutators 30, are formed on the tip of the shaft insulation part 62.
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