Patent ID: 7084541
Filing Date: 2006-08-01
Classification: H02K,Y10T

Abstract:
1. A stator coil, comprising: a plurality of segments each of which is received in slots of a stator core having an even number of receiving positions in a radial direction of the stator coil, thereby constructing one turn in a phase coil in M (integer greater than or equal to 3) phase coils, said segment comprising: a pair of slot conductor portions each of which is received in a receiving position different with each other in a pair of slots distant by a prescribed pitch; a head portion which is a head coil end and is projected toward an end of said stator core; and a pair of projected end portions each of which is another coil end and is projected from another end of said stator core, said head portion comprising: a U-shaped head tip portion; and a pair of head oblique portions each of which is stretched obliquely along circumferential and axial directions of said stator core, said projected end portion comprising: a pair of end oblique portions each of which stretches obliquely along circumferential and axial directions of said stator core; and a pair of end tip portions each of which is formed at a tip of said end oblique portion and joined with an end tip of different end tip portion, said head portions being arranged along the radial direction of said stator core, said projected end portions being arranged along the radial direction of said stator core, wherein: said segments are composed of a plurality of segment sets, each segment set has a small segment and a large segment, the small segment of each segment set is received in a pair of said receiving positions adjacent along the radial direction, and the large segment of the segment set is received in another pair of said receiving positions, there is a gap along the axial direction of said stator core between said head tip portion of said small segment and said head tip portion of said large segment in each segment set; and in each of the large and small segments, a width of said head portion in a width direction perpendicular to the axial direction is wider than a width of the pair of slot conductor portions in the width direction.