MOTOR, RECORDING DISK DRIVING DEVICE USING THE SAME, AND METHOD OF MANUFACTURING THEREOF

摘要

A method of manufacturing a spindle motor including a rotor hub having a hard disk placing portion, a base to which the rotor hub is rotatably attached via a bearing, and a coil inducing a magnetic field when energized and arranged at an inside space between the rotor hub and the base, and whose inside space is separated from the outside space by a substantially circular gap maintained between the rotor hub and the base, is provided. The spindle motor preferably includes one or more waterproofed portions including at least a portion of a surface of the rotor hub and a surface of the base facing each other and defining the gap connecting the inside space and the outside space of the spindle motor.