Patent ID: 9419484
Filing Date: 2016-08-16
CPC Classification: H02K

Claim Text:
1. A stator for a rotating electric machine, the stator comprising: an annular stator core having a plurality of slots formed therein, the slots being spaced from one another in a circumferential direction of the stator core; and a stator coil mounted on the stator core, wherein the stator coil is formed of a plurality of electric conductor segments each of which has a substantially rectangular cross section with its width greater than its thickness, each of the electric conductor segments is bent in its thickness direction to include, at least, an in-slot portion and an oblique portion, the in-slot portion is received in a corresponding one of the slots of the stator core with the width direction of the in-slot portion coinciding with a radial direction of the stator core, the oblique portion protrudes from the in-slot portion outside the corresponding slot and extends, over its entire length, along the circumferential direction of the stator core obliquely with respect to an axial end face of the stator core, the oblique portion includes a thick section and a thin section, the thick section has one end connected to the in-slot portion and the other end connected to the thin section, the thick section having substantially the same thickness as the in-slot portion, the thin section has one end connected to the thick section and the other end defining a distal end of the oblique portion, the thin section having a thickness less than the thickness of the thick section, each corresponding pair of the oblique portions of the electric conductor segments are connected by joining the thin sections of the oblique portions, for each of the oblique portions of the electric conductor segments, the thin section of the oblique portion includes a first part connected to the thick section of the oblique portion and a second part that includes the distal end of the oblique portion, each corresponding pair of the oblique portions of the electric conductor segments are connected by joining the second parts of the thin sections of the oblique portions, and for each of the oblique portions of the electric conductor segments, the thin section of the oblique portion further has a constriction that is formed at the boundary between the first and second parts of the thin section and recessed inward in one of the width and thickness directions of the thin section.