| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hydrodynamic bearing capable of securing high dimension accuracy and high shape accuracy in the condition wherein a case is fitted, capable of surely adhering the case and a sleeve to each other with an adhesive, capable of preventing leakage of lubricating oil fluid by maintaining air-tightness for a long time, and easy to be assembled, while maintaining high quality, and capable of reducing costs. <P>SOLUTION: In this hydrodynamic bearing 1 formed by inserting a shaft body 3 for arrangement into the sleeve 2 fitted in the case 7 and for supporting the shaft 3 freely to rotate in relation to the sleeve 2 in the non-contact condition with dynamic pressure effect (force) by the lubricating oil fluid filled in a clearance formed in the periphery of the shaft body 3, the peripheral surface of the sleeve 2 is formed with a recessed groove 2c for an adhesive over the whole circumference, and at least one hole 7a opposite to the recessed groove 2c for an adhesive is formed in the case 7. The case 7 and the sleeve 2 are adhered to each other by filling adhesive 13 from the hole 7a into the recessed groove 2 for the adhesive. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
