| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a hydrodynamic bearing device having a structure capable of easily balancing the force in the radial direction and the thrust direction, and preventing the leakage of a lubricant. SOLUTION: In this hydrodynamic bearing device composed of a housing 2 having openings 2a and 2b at both ends and an internal space 2c, a shaft 1 penetrating through the openings, and a flange 3 mounted on the shaft 1, and provided with a radial dynamic pressure groove and a thrust dynamic pressure groove, radical hydrodynamic bearings 4 and 5 are formed near both openings of the housing 2, and thrust bearings 6 and 7 supporting both surfaces are formed between the radical hydrodynamic bearings 4 and 5. The radial hydrodynamic bearings 4 and 5 holding the thrust hydrodynamic bearings 6 and 7 are formed symmetrically with respect to the thrust hydrodynamic bearings 6 and 7.</p> |
