HYDRODYNAMIC BEARING ASSEMBLY AND MOTOR INCLUDING THE SAME

摘要

PURPOSE: A journal fluid dynamic bearing assembly and a motor including the same are provided to stably drive a motor by improving the combination force of a shaft and a rotor case. CONSTITUTION: A journal fluid dynamic bearing assembly comprises a sleeve(120), a thrust plate(130), a cap member(140) and an anti-leakage part(160). A shaft(110) is inserted in the sleeve in order to support the shaft. The thrust plate is pressed in the shaft and is arranged in the upper side of the sleeve. The cap member is arranged in the top plate of the thrust plate. The cap member is sealed with the lubricant fluid agent between the thrust plates. The anti-leakage part is combined in the end part of the cap member and prevents the outflow of the lubricant fluid agent.