Patent ID: 8258668
Filing Date: 2012-09-04
Classification: H02K

Abstract:
1. A stator in which coil conductors of three phases are disposed in a plurality of slots provided in a stator core, wherein the coil conductors are formed by connecting a plurality of slot conductor portions disposed in the slot, a plurality of coil end conductor portions extending in a circumferential direction of the stator core on an outer side of an axial end surface of the stator core, and a plurality of upstanding conductor portions, each of which connects the coil end conductor portion and the slot conductor portion, the plurality of slot conductor portions and the plurality of upstanding conductor portions are disposed in series in a radial direction of the stator core, at least the upstanding conductor portion positioned on an outermost peripheral side is formed in an inclined shape that steadily increases in diameter toward the outer peripheral side while approaching an axial outer side of the stator core, the stator core is formed by connecting a main core portion formed with a main slot portion for disposing the slot conductor portion and an auxiliary core portion formed with an auxiliary slot portion for disposing the upstanding conductor portion, an outer peripheral side bottom portion of the auxiliary slot portion in the auxiliary core portion is formed in a stepped shape or an inclined shape that corresponds to the inclined shape of the upstanding conductor portion positioned on the outermost peripheral side, the main core portion is formed as an integral core having an annular shape, while the auxiliary core portion is formed by combining a plurality of divided cores divided in a plurality of locations in the circumferential direction of the stator core, the auxiliary core portion is fitted into an annular sleeve for holding the plurality of divided cores in a combined state, the slot is a parallel slot having circumferential direction side faces that are parallel to each other in the radial direction of the stator core, the parallel slot is formed in a multiple of two, and the plurality of divided cores are segmented at a yoke portion positioned on an outer peripheral side of a pair of slots sandwiching a single slot.