Patent ID: 8659204

Claim:
A stator comprising: a stator core having a plurality of teeth; slots provided between the teeth; coils having a plurality of phases, each of the coils being wound in the slots; an interphase insulation sheet provided between coil ends of adjacent coils having different phases among the coils; and wedges provided in the slots on an inner peripheral side of the stator core, wherein each of the wedges has projecting portions protruding from first and second end faces of the stator core in a rotation axis direction, wherein the interphase insulation sheet includes a first sheet body portion, a second sheet body portion, and a first bridge portion, the first sheet body portion being provided on an outer side of the first end face of the stator core in the rotation axis direction, the second sheet body portion being provided on an outer side of the second end face of the stator core in the rotation axis direction, the first bridge portion linking the first sheet body portion to the second sheet body portion, wherein the first and second sheet body portions have first and second retaining pieces respectively provided in opposing inner portions of the first and second sheet body portions in a developed state of the interphase insulation sheet, the first retaining piece projecting from the first sheet body portion toward the second sheet body portion in the developed state of the interphase insulation sheet, the second retaining piece projecting from the second sheet body portion toward the first sheet body portion in the developed state of the interphase insulation sheet, wherein a width of each of the first and second retaining pieces in a circumferential direction of the stator is greater than a circumferential distance between slots which are adjacent to each other in the circumferential direction, and wherein the first and second retaining pieces are retained by the projecting portions of the wedges when the first and second sheet body portions are attached to the stator core to cover the coil ends, the first and second retaining pieces being provided to extend across at least two wedges which are provided in slots which are adjacent to each other in the circumferential direction.