Hydrodynamic bearing apparatus and method for manufacturing same

DETAILED DESCRIPTION This invention aims to provide a hydrodynamic bearing apparatus wherein the amount of the lubricant injected in the bearing unit is not caused to be excessive or short at the junction on which the thrust member for hydrodynamic pressure support in the thrust direction, that is, the thrust plate is mounted, and excellent bearing property is obtained.
In accordance with the invention, a hydrodynamic bearing apparatus comprises at least two hydrodynamic bearing units which rotatably support a rotation member against a fixed member by hydrodynamic pressure of a lubricant filled in a bearing space.
A thrust plate is adhesively bonded on one of the rotation member and fixed member to support the rotation member in an axial direction.
The thrust plate and rotation member or fixed member form a junction.
Mechanical bonding means bond the thrust plate onto one of the rotation member and fixed member.
A sealing agent prevents the lubricant from leaking from the junction between the thrust plate and the rotation member or fixed member.
The sealing agent fills a space that communicates with the junction.