VIBRATION ROTARY TYPE MOTOR

PURPOSE:To obtain a motor adapted for a motor-driven brush for cleaning a floor surface which rotates a rotor in an axial direction while vibrating by making the rotor which is supported by a spring movably in an axial direction through an axial air gap oppose to the stator. CONSTITUTION:A rotor 14 which is opposed through an axial air gap to a stator 11 is provided on a rotational shaft 12 axially movably, and springs 16, 18 which elastically support the rotor 14 are concentrically provided with the shaft 12 at both axial sides of the rotor 14. The spring constants of the springs 15, 18 are set to the magnitude so that the rotor 14 is vibrated axially by the magnetic attracting force produced between the rotor 14 land the stator 11. For example, the rotor 14 is axially movably provided in the state that a key 15 is engaged to stop turning the shaft 12 rotatably supported by ball bearings 13 provided at the stator 11, and the rotor 14 is elastically supported through the springs 16, 18 between the spring seats 17 and 19 secured to the shaft 12.