To provide an insulation structure to which a mold construction method can be applied even in the case that a stator core is long lengthwise and besides which is excellent in electric insulation, and to provide an insulation method.
This is an insulation structure for getting the electric insulation of the stator core 2 which has an annular yoke 20, a plurality of teeth 22 projected inward in the radial direction and slots 25 made between the teeth 22. Insulating members 3 consisting of sheet materials having electric insulation are wound on the teeth 22 to cover all the periphery mostly. A resin mold film 4 consisting of synthetic resin is formed at least at a section not covered with the insulating member 3 and at the bottom 251 of the slots 25 out of the surface 205 of the yoke end and the surface 225 of the tooth end of the stator core 2. In the vicinity of the proximal end of the tooth 22, an overlap 5 is made all around where a mold film 4 and the insulating member 3 overlap each other.
HASHIMOTO SHINGO
AZEYANAGI TORU
Tamiwa Iwakura
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