COMMUTATOR MOTOR

PROBLEM TO BE SOLVED: To achieve an efficient commutator motor by extending a windable slot area so that a copper loss can be reduced in an armature of a compact commutator motor such as a motor for a cleaner, and by providing a wedge shape for reducing a mechanical loss in rotation. SOLUTION: At the opening 13 side of a plurality of slots in an armature core 11, a thin insulating material is bent in a nearly cone shape for formation as a wedge 22 for ensuring insulation between the core 11 and the coil 30. Both bent ends are set to be nearly cone-shaped bottom and crest sections. The bottom and crest sections are arranged at the side of the coil 30 side and that of the opening 13 of slots, respectively, for attachment. COPYRIGHT: (C)2008,JPO&INPIT