Patent ID: 8446061
Filing Date: 2013-05-21
Classification: H02K

Abstract:
1. A rotating electric machine comprising: a stator that includes a stator core with numerous slots formed therein and a stator coil disposed inside the slots at the stator core; and a rotor rotatably disposed inside the stator, wherein: the slots formed at the stator core each assume a section taken on a plane perpendicular to a rotational axis of the rotor, which is elongated along a radial direction; at least a first stator coil and a second stator coil together constituting the stator coil, and a thin insulator used to insulate the first stator coil and the second stator coil from the stator core, are disposed inside each slot; the first stator coil and the second stator coil are disposed side-by-side along the radial direction inside the slot; the insulator is disposed between an inner surface of the slot and the first and second stator coils disposed side-by-side along the radial direction; one side of the insulator extends along an outer circumference of the first stator coil so as to shield an outer circumferential surface of the first stator coil located on a side opposite from the second stator coil and further extends through an area between the first stator coil and the second stator coil, with an end of the insulator on the one side coming into contact with a portion of the insulator placed between the inner surface of the slot and the first and second stator coils; another side of the insulator extends along an outer circumference of the second stator coil so as to shield an outer circumferential surface of the second stator coil located on the side opposite from the first stator coil and further extends through the area between the first stator coil and the second stator coil, with an end of the insulator on the other side coming into contact with a portion of the insulator placed between the inner surface of the slot and the first and second stator coils; the insulator is made with one insulating sheet and is formed to have an overlapping portion that is disposed between the first and second stator coils; and the overlapping portion is structured so that the end of the insulator on the one side and the end of the insulator on the other side are overlapped between the first and second stator coils.