| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fluid bearing device which can be manufactured at low cost and can stably maintain high bearing performance. <P>SOLUTION: The fluid bearing device 1 is equipped with a bearing member 7 containing radial bearing surfaces A1, A2 and a shaft member 2 inserted into an inner periphery of the bearing member 7. A radial bearing clearance filled with a lubricating oil is formed between the radial bearing surfaces A1, A2 of the bearing member 7 and an outer peripheral surface 2a1 of the shaft member 2. An upper end of the radial bearing clearance is connected to a lower end of a seal clearance S for holding an oil surface of lubricating oil in an upper end opening of the bearing member 7. The bearing member 7 is formed of a sintered-metal porous body having a seal surface 7b1 facing the seal clearance S. Hole sealing parts 9 for sealing surface opening holes on these surfaces are provided in at least the seal surface 7b1 and a surface exposed outside in the bearing member 7. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
