SPINDLE MOTOR AND DRIVING DEVICE OF RECORDING DISK HAVING THE SAME

摘要

Disclosed is a spindle motor which comprises: a base member with an installation unit; a lower thrust member bonded to and installed in the installation unit; a shaft having a lower end portion fixed to and installed in the lower thrust member; a sleeve installed in the shaft to rotate around the shaft; a rotor hub installed in an external circumference of the sleeve and integrated with a yoke member made of heterogeneous materials by insert die-casting; and a cap member installed in an upper end portion of the sleeve. Therefore, the spindle motor can improve a manufacturing yield.