Patent ID: 8832925

Claim:
A method for manufacturing a stator including a stator core having slots formed along an axial direction at a plurality of locations in a circumferential direction, and a coil that is formed by a plurality of rectangular cross-sectioned rectangular wires having a plurality of straight portions disposed in the slots and arranged side by side in the circumferential direction and in a radial direction, the coil being disposed in the stator core by distributed winding, the stator manufacturing method comprising: combining the rectangular wires to form the coil; disposing a restriction jig having a large number of restriction pieces, the number of which is the same as the number of the slots, on a first-end side of the coil in the axial direction such that the restriction pieces cause spaces between adjacent ones of the straight portions of the coil to have a width matching intervals between the slots, also disposing the restriction jig such that the restriction pieces are disposed outside the stator core in the axial direction; and inserting the coil into the stator core from the first-end side in the axial direction, remaining a state where the restriction pieces are disposed outside the stator core in the axial direction, to dispose the straight portions in the slots while restricting circumferential positions of the straight portions along the axial direction through contact with the restriction pieces, the coil being inserted by moving the restriction jig and the coil in the axial direction and by relatively moving the restriction jig from the first-end side to a second-end side of the coil in the axial direction.