Rotor core of motor

A stacked rotor core of a motor, the rotor core comprising:

• a thin disk-shaped rotor core member including a shaft hole extended to a direction of a rotation shaft, a key groove communicating with the shaft hole and a magnet;
• a shaft press-fitted into the shaft hole and concavely formed at a peripheral position corresponding to that of the key groove with a key accommodation groove;
• and
• at least one or more keys formed at the key groove and the key accommodation groove to restrict the rotor core member and the shaft;
• wherein the rotor core member is formed at each distal cross-sectional end with a first magnet disengagement inhibition member and a second magnet disengagement inhibition member,
• wherein the first magnet disengagement inhibition member includes a disk-shaped through hole corresponding to a diameter of the shaft, and at least one or more hook lugs protrusively formed at an inner side of the through hole to be hooked to a reception groove formed at a position corresponding to that of the shaft, and
• wherein the hook lug is hooked by being rotated to a direction perpendicular to an axial direction after being inserted into the reception groove to the axial direction of the shaft.