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About the motor armature
2014-07-02
A commutator-integrated armature is comprised of a shaft, an armature core composed of laminated sheets, an armature coil composed of conductor segments. The conductor segments have in-slot portions respectively inserted into slots of the armature core and end portions forming a flat commutator. The armature core has an anchoring portion revet for anchoring a part of each of the in-slot portions to the armature core more strongly than the rest thereof. The surface of the flat commutator is maintained flat even if the conductor segments repeat thermal expansion and contraction.