Rotary medium driving apparatus

摘要

In the rotary medium driving apparatus 1 equipped with the rotor 3, which can rotate freely around the shaft 18 fixed to the stator 4 by means of the ball bearings 16 and 17 and is provided with a certain diameter being capable of fitting a center hole of a rotary medium, the stator 4 is composed of the flat base 2 formed by a presswork and the stator core 15. The base 2 holds the shaft 18, which is inserted into the inner circumference surface 52 of the base 2, and has the ring shaped projection 5 for allocating the stator core 15 on the outer circumference surface 51 of the base 2.