| 摘要 |
A covering device of a hard disk drive including a spindle motor having a rotating shaft for rotating a disk, an actuator pivoting about a pivot shaft and having at its distal end a head for reading/writing data while pivoting over the disk, a base for mounting the spindle motor and the actuator thereon, and a cover locked to the base and made of plastic. The covering device comprises at least one thin plate attached to the cover such that it is coaxially arranged with the rotating shaft and/or the pivot shaft, for dampening vibration and noise transferred from around the rotating shaft and/or the pivot shaft to the cover. In one embodiment, the thin plate contains slits to more effectively dampen noise and vibrations generated from the spindle motor and the actuator. In another embodiment, the thin plate for the actuator has the same shape as the operating area of the actuator and contains ruffles to further dampen noise and vibrations generated from the pivot shaft of the actuator.
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