| 摘要 |
<p>A dynamic pressure bearing device manufacturable at low cost, wherein a shaft member (2) is radially supported on a bearing member (7) in the state of being non-contact with each other by a dynamic pressure action caused in a radial bearing clearance between the outer peripheral surface of the shaft member (2) and the inner peripheral surface (7a) of the bearing member (7). The dynamic pressure bearing device comprises the shaft member (2), the bearing member (7), a cover member (8), and a seal member (9). The shaft member (2) is inserted into the inner periphery of the bearing member (7), and the lower end opening part of the bearing member (7) is sealed by the cover member (8). The seal member (9) is fitted to the upper end opening part of the bearing member (7), and a seal space (S) is formed between the seal member and the outer peripheral surface of the shaft member (2). The dynamic pressure grooves (G) of radial bearing parts (R1) and (R2) are formed in the inner peripheral surface (7a) of the bearing member (7) by molding.</p> |
