Patent ID: 8585289
Filing Date: 2013-11-19
Classification: F16C

Abstract:
1. A spindle motor comprising: a lower thrust member fixedly attached to a base member; a shaft fixedly attached to at least one of the lower thrust member and the base member; a sleeve disposed on an upper portion of the lower thrust member and rotatably installed on the shaft; a rotor hub coupled to the sleeve to thereby rotate together with the sleeve; and an upper thrust member fixedly attached to an upper end portion of the shaft and forming a liquid-vapor interface together with the sleeve, the sleeve having an inclination part formed at an upper end portion thereof so as to form the liquid-vapor interface together with the upper thrust member, the inclination part having an outer diameter larger in an upper portion thereof than in a lower portion thereof, and an outer peripheral surface of the upper thrust member and an inner peripheral surface of the rotor hub disposed to face the outer peripheral surface of the upper thrust member are inclined.