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US 2011/0210642 A1Published application
ARMATURE OF ELECTRIC MOTOR AND METHOD FOR MANUFACTURING ARMATURE OF ELECTRIC MOTOR( amended
AssigneeKomatsu Ltd.
InventorsTeiichirou Chiba, Daisuke Yoshida, Shunichi Koshiyama
Life of this patent
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Abstract
A stator is provided with a core and a winding. The core includes a plurality of slots and a plurality of teeth formed between the slots. The winding is composed of a plurality of wires W bundled in an irregular arrangement. The winding includes a plurality of coil portions wound on each of the teeth, and a connecting portion connecting the coil portions together. The winding has a twisted shape in the connecting portion.
Claims18
An armature of an electric motor comprising:
- a core including a plurality of slots and a plurality of teeth formed between the slots;
- and
- a winding made of a plurality of wires bundled together in an irregular arrangement, the winding including a plurality of coil portions wound around each of the teeth, and a plurality of connecting portions connecting the coil portions together, the winding having a twisted shape in the connecting portions.
A method for manufacturing an armature of an electric motor comprising:
- winding a bundled plurality of wires in an irregular arrangement around a plurality of teeth formed on a core, and thereby forming a plurality of coil portions wound around each of the teeth;
- and
- forming a plurality of connecting portions that connect the coil portions together using the wires continuing from the coil portions, and twisting the wires in the connecting portions, between formations of each of the coil portions.
Dependencies are inferred from the claim text.