Patent ID: 9577498
Date: 2017-02-21
CPC Classifications: H02K,Y10T

Claim:
1. A stator for a rotary electric machine, comprising: a stator core having a hollow cylindrical shape, including a plurality of slots formed along a circumferential direction by a plurality of teeth, each having a distal end portion projecting to an inner diameter side; and a stator winding provided to the stator core, including a plurality of coil portions, each including a conductor wound around each tooth of the plurality of teeth, electrically connected to each other through terminal members provided on an outer diameter side of an end surface of the stator core, wherein: each coil portion of the plurality of coil portions includes: a coil main-body portion; a first connecting wire drawn from an outermost diameter portion of the coil main-body portion; and a second connecting wire drawn from an innermost diameter portion of the coil main-body portion; the first connecting wire includes a first connecting-wire end portion connected to one terminal-member end portion of a corresponding one of the terminal members; the second connecting wire includes a first bent portion formed by bending the second connecting wire outward in a radial direction of the stator core and a second connecting-wire end portion connected to another terminal-member end portion of the corresponding one of the terminal members; and the second connecting wire is configured so that a differential value of a length z in an axial direction of the stator, provided that an axially outward direction is a +-direction, to a length r in a radial direction of the stator, provided that a radially outward direction is a +-direction, is Δz/Δr>0, wherein an electric field intensity between the second connecting wire and a coil end of a coil main-body portion proportionally increases toward the outer side in the radial direction within a region of the coil main-body portion, wherein the second connecting wire has a linearly inclined portion extending from the first bent portion to a second bent portion located at the second connecting-wire end portion, the linear inclined portion extending over the entire axial direction of the coil main-body portion.