Stator of electric rotating machine
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsHideki Morikaku, Yoshihito Asao
Life of this patent
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Abstract
A stator of an electric rotating machine is improved in efficiency of inserting a winding assembly into slots and insulation performance after the insertion. The stator 8 acting as an armature includes an insulator 4 of a two-layer structure in which paper 9 is disposed on the stator winding side and resin 10 on the stator core side or a two-layer structure in which the paper and resin are disposed in a opposite manner, a stator core 2 in which plural slots 2a each extending invertical axial direction are provided in circumferential direction, and a stator winding 3 wound round the stator core 2. The insulator 4 electrically insulates the stator core 2 and the stator winding 3.
Claims8
A method of forming a stator of an electric rotating machine, the method comprising:
- providing a stator core having a plurality of teeth defining a plurality of slots in a circumferential direction;
- providing a plurality of insulators having a U-shape and a two-layer structure composed of a paper layer and a resin layer, each of the insulators including end portions which bend inward at different angles;
- partially inserting the insulators in the slots so that at least the end portions of the insulators remain outside of the slots;
- and
- inserting a stator winding in an opening portion of the insulators so that the insulators and the stator winding are fully inserted in the slots and the end portions of the insulators overlap to completely close the opening portion of the insulators.
Dependencies are inferred from the claim text.