| 摘要 |
The present invention relates to a hydrodynamic bearing assembly and a motor including the same. The present invention comprises a sleeve which supports a shaft so that the top end of the shaft protrudes upward in the shaft direction and forms a bearing gap filled with lubricating fluid between the shaft and the sleeve; a housing which is provided to partly surround the outer circumferential surface of the sleeve; a rotor hub which is coupled to the top of the shaft and has an extension wall unit extended and formed to partly face the outside surface of the top end of the sleeve and to be partly placed on the outer side of the housing; a stopper which is protrudes toward the outer side of the radius direction to be hung on the bottom end of the sleeve at the bottom end of the shaft; a cover member which is provided at the bottom end of the housing; a circulating hole which is provided between the sleeve and the housing in order to communicate the lower part of the sleeve with the top end of the housing; and a liquid-vapor interface which can be formed on the inner surface of the extension wall unit and the outer surface of the housing. |
