Patent ID: 7063463
Filing Date: 2006-06-20
Classification: F16C,Y10T

Abstract:
1. A conical hydrodynamic bearing device comprising: a shaft bush having a conical inclined dynamic pressure surface around an outer circumference thereof being relatively-rotatably inserted in a bearing sleeve having a conical inclined dynamic pressure surface around an inner circumference thereof, so that a conical inclined bearing space is created in a gap between said inclined dynamic pressure surfaces of said bearing sleeve and shaft bush; a lubricant fluid being filled inside said inclined bearing space; a proper dynamic pressure generating means being formed on at least one of said inclined dynamic pressure surfaces of said shaft bush and bearing sleeve; said lubricant fluid being pressurized by said dynamic pressure generating means to generate dynamic pressure, by which said shaft bush and said bearing sleeve are relatively elevated in the radial and thrust directions so that their rotations are supported in a non-contact manner; wherein an open angle θ