Patent ID: 7948143

Claim:
A stator for an electric rotary machine comprising: a hollow cylindrical stator core includes a plurality of slots are arrayed in a circumferential direction thereof; a stator coil installed in said stator core, said stator coil being made up of a plurality of conducting wires, each of the conducting wires includes in-slot portions disposed one in each of the slots and turned portions, each of the turned portions connects adjacent two of the in-slot portions outside the slots, each of the turned portions including steps, wherein adjacent two of the steps are connected together through a curved bend, the turned portions extending over an end of said stator core so that the curved bend of a first conducting wire that is one of at least two of the conducting wires is laid to overlap one of turned portions of a second conducting wire that is the other of the at least two of the conducting wires in an axial direction of said stator core through a gap; and walls formed on a surface of the curved bend of the first conducting wire that faces a surface of the curved bend of the turned portions of the second conducting wire, said walls extending toward the curved bend of the turned portions of the second conducting wire to define a chamber with the surface of the curved bend of the turned portions of the second conducting wire.