| 摘要 |
A rotation driving motor for a rotation type advertisement artifact is provided to extend a lifetime and improve durability by including a bearing member in comparison with an oil fence. A deceleration gear box(40) includes a motor mounting hole(41) at one side of a bottom surface and an electric output axis(42) at the other side thereof. The electric output axis outputs decelerated rotary power. A rotor(50) is coupled and mounted inside the motor mounting hole and includes a spline member(52) at a motor axis(51). A stator(60) is mounted on the bottom surface of the deceleration gear box, generates a magnetic field by winding a coil around a core, and includes a mounting hole(61) through which the rotor passes. A cover(70) is mounted on a bottom surface of the stator, includes a bearing member mounting unit(71), and supports a lower end(51a) of the motor axis of the rotor. A first bearing member has an inner ring fixed to the motor axis of the rotor and an external ring inserted and fixed to the motor mounting hole of the deceleration gear box. A second bearing member has an inner ring fixed to the lower end of the motor axis and an external ring inserted and fixed to the bearing member mounting unit of the cover. |
