SEALING MODULE OF HYDRODYNAMIC BEARING AND SPINDLE MOTOR HAVING THE SAME

摘要

A sealing module of a fluid hydrodynamic bearing according to the present invention is a sealing module of a fluid hydrodynamic bearing, which has a fluid hydrodynamic bearing unit formed by oil filled in a small gap between a shaft and a sleeve. The shaft is fixed and combined to a holder. The sleeve is supported to be rotated by the shaft. The sleeve and the holder each have a bent unit on the surface facing each in a perpendicular direction of the shaft axis. A maze type sealing unit is formed by the bent unit.