Method of assembling split core type stator of inner rotor type rotary electric machine

A method of assembling a split core type stator comprising:

• a coil preparing step of preparing a stator coil made of a distributed winding coil in which a number of in-slot conductor portions to be accommodated in slots of a stator are arranged at a predetermined circumferential pitch at a position of a predetermined radial distance from an axis center;
• a split core disposing step of radially disposing a number of split cores each having at least one slot radially outside the respective in-slot conductor portions of the stator coil;
• a teeth inserting step of inserting teeth of the split cores between each adjacent in-slot conductor portions by moving a number of the split cores to a centripetal direction;
• and
• a split core joining step of joining a number of the split cores to constitute a stator core;
• wherein the teeth inserting step includes a step of supporting the in-slot conductor portions movable relatively in a radial direction by a plurality of conductor holders displaceable in the radial direction before the split cores are moved to the centripetal direction, while holding a plurality of the in-slot conductor portions at their respective target circumferential slot positions, and then moving the plurality of the conductor holders to the centripetal direction in conjunction with movement of the split cores to the centripetal direction.