| 摘要 |
A rotary electric machine has a stator winding which forms a coil end group on an axial end of a stator. A plurality of conductors are regularly arranged in a row in the coil end group, and an insulating resin is soaked into there between. The insulating resin forms a number of grooves on a radial outside of the coil end group and forms a smooth surface on a radial inside of the coil end group. Therefore, it is possible to decrease an amount of the insulating 10 resin, to provide a high rigidity to the coil end group and to provide a surface area on the outside to radiate heat.
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