| 摘要 |
PROBLEM TO BE SOLVED: To improve reliability in fixing a coil to a stator core.SOLUTION: An expansion material 28 which has insulation and foaming properties and is foamed by heating to expand the volume is provided only between coils 22 which are adjacent in a circumferential direction of a stator and the expansion material 28 is not provided between teeth 24 and the coil 22, such that a pressure to act on the coil 22 by expanding the expansion material 28 acts only at one side where the coil 22 is pressed to the teeth 24. Therefore, the coil 22 can be prevented from being displaced from a desired position by varying a shape after the expansion of the expansion material 28 or varying the pressure caused by the expansion.SELECTED DRAWING: Figure 2 |
