Method of assembling a rotary electric machine

A method for assembling a rotary electric machine including

• a driving shaft,
• a rotor having a substantially cylindrical rotor core attached to the driving shaft, and
• a stator having:
• a substantially cylindrical stator core which is provided around the rotor, which includes a core back portion having a substantially cylindrical shape and a plurality of teeth radially inwardly protruding from the core back portion toward the driving shaft such that radially inner end surfaces of respective tips of the plurality of teeth form an inner peripheral surface of the stator core facing the rotor, the stator core being divided into a plurality of separated stator core parts aligned along a peripheral direction, and
• a plurality of coils wound around the stator core in a distributed winding manner,
• the method comprising:
• when the stator core parts are separated, attaching the coils to each of the plurality of separated stator core parts so that axial coil ends of at least one coil of the plurality of coils pass through a radially inner side relative to the inner peripheral surface, said attaching being performed such that none of the coils lie astride any two of the separated stator core parts, and;
• and
• assembling the stator and the rotor by radially inwardly moving the separated stator core parts having the corresponding coils attached thereto from an outer peripheral side of the rotor to installation positions.