| 摘要 |
PROBLEM TO BE SOLVED: To increase impact resistance of a disk drive device.SOLUTION: In a disk drive device 100, a magnetic recording disk 8 is mounted on a rotor 6. A base 4 has a bearing hole 4h, the center of which is along the rotational axis R of the rotor 6. A bearing unit 12 rotatably supports the rotor 6 with respect to the base 4, the bearing unit 12 being glued to the bearing hole 4h. A ring-shaped first groove 4j, the center of which is along the rotational axis R, is arranged on a side surface 4i of the bearing hole 4h. A ring-shaped second groove 44b, the center of which is along the rotational axis R, is arranged on an outer surface 44a of a housing 44, the outer surface 44a contacting the side surface 4i of the bearing hole 4h, the position of the second groove 44b being different from that of the first groove 4j in a direction along the rotational axis R. The base 4 and the bearing unit 12 are electrically connected by a conductive resin 52 applied along an edge portion 41 of the bearing hole 4h, the edge portion 41 being on a lower surface 4k of the base 4. |
