PURPOSE: A motor stator is provided to increase the coherence by integrally forming the outside stator core which comprised in a cylindrical shape. CONSTITUTION: The outside stator core (110) is a cylindrical shape. The inside stator iron cores (120) are inserted into the outside stator core. The Inside stator iron cores laminated multiple pieces. Each of the inside stator cores has protrusion units (123). The protrusion units are combined with the inner side of the outside stator core.
