HYDRODYNAMIC BEARING STRUCTURE FOR BEARING COOLING FAN AND METHOD FOR ASSEMBLING THE SAME

摘要

Disclosed are a hydrodynamic bearing structure for bearing a cooling fan and a method of assembling the same. The hydrodynamic bearing structure comprises a housing, a hydrodynamic bearing, a rotation shaft, a thrust member and a bottom plate. The hydrodynamic bearing is mounted in an accommodating space within the housing. The rotation shaft is disposed through a rotation shaft hole of the hydrodynamic bearing. The thrust member is disposed on an end portion of the rotation shaft and accommodated between a bottom surface of the hydrodynamic bearing and a top surface of the bottom plate. A plurality of guiding grooves are disposed in a surface of the thrust member, so that an oil layer applied with pressure is formed on the surface of the thrust member to maintain stable rotation of the rotation shaft and reduce the deflection and vibration of the fan during rotation.

主权项

1. A hydrodynamic bearing structure for bearing a cooling fan, comprising:
a housing having a cylindrical accommodating space, wherein an upper opening communicating with the accommodating space is provided at an upper end of the housing; a bottom plate, disposed on a bottom of the housing, wherein the bottom plate is tightly fit to the bottom of the housing; a hydrodynamic bearing, disposed in the accommodating space, wherein a rotation shaft hole extending through a top surface and a bottom surface of the hydrodynamic bearing is provided in the center of the hydrodynamic bearing; a rotation shaft, disposed in the rotation shaft hole of the hydrodynamic bearing, wherein an upper end of the rotation shaft protrudes from the top surface of the hydrodynamic bearing, and a bottom end of the rotation shaft protrudes from the bottom surface of the hydrodynamic bearing and contacts a top surface of the bottom plate; and a thrust member, fixedly connected to the bottom end of the rotation shaft and accommodated between the bottom surface of the hydrodynamic bearing and the bottom plate, wherein a space in the accommodating space between the bottom surface of the hydrodynamic bearing and the top surface of the bottom plate is filled with a lubricating oil.