Patent ID: 9712012
Date: 2017-07-18
CPC Classifications: H02K

Claim:
1. A rotary electric machine comprising an armature that includes: an annular armature core in which slots are arranged circumferentially; and an armature winding that is mounted onto said armature core, wherein: said armature winding includes a plurality of distributed winding bodies that are each produced by winding a single conductor wire that is insulated, jointless, continuous, and that has a constant cross-sectional area perpendicular to a longitudinal direction; said conductor wires are configured by alternately arranging rectilinear portions and coil end portions in a longitudinal direction of said conductor wires, said rectilinear portions being inserted into said slots, and said coil end portions linking pairs of rectilinear portions inserted into said slots positioned on two sides of a plurality of circumferentially consecutive teeth; a plurality of said rectilinear portions are housed inside said slots so as to line up in a single column in a radial direction; a radial width of said rectilinear portions is formed so as to be wider than a radial width of said coil end portions along the length of the coil end portions; a first gap is formed between radially adjacent coil end portions to allow a cooling medium to pass through said first gap; and said coil end portions include: a top portion that is separated axially from an end surface of said armature core; and an inclined portion that extends outward from said rectilinear portions and maintains a radial position to reach said top portion; said inclined portions that are radially adjacent to inclined portions of coil end portions of a different phase are displaced in a direction in which radial positions of conductor centers are set further away from said inclined portions of said coil end portions of said different phase than radial positions of conductor centers of said rectilinear portions from which said inclined portions extend outward; said inclined portions that are radially adjacent to inclined portions of coil end portions of an identical phase are displaced in a direction in which radial positions of conductor centers are set closer to said inclined portions of said coil end portions of said identical phase than radial positions of conductor centers of said rectilinear portions from which said inclined portions extend outward; said first gap that is formed between said radially adjacent coil end portions of said different phases is wider than said first gap that is formed between said radially adjacent coil end portions of said identical phases; and an angular orientation of each of the radially adjacent coil end portions remains constant along the length of the coil end portions.