Patent ID: 7370341

Claim:
A disk driving apparatus comprising: a casing; a base chassis which mounts thereon a spindle motor to rotatably drive a disk, and a pickup device to at least record information on or reproduce information from the disk rotated by the spindle motor while moving in a radial direction of the disk, wherein the base chassis is fixed to the casing and positioned between the spindle motor mounted thereon and the casing, with the spindle motor being mounted at one end of the base chassis and the pickup device being configured to move over the base chassis, the base chassis includes a plurality of dynamic vibration absorbers each having an elastic member fixed to the base chassis and a dynamic vibration absorption pendulum plate supported by the chassis through the elastic member, and the plurality of dynamic vibration absorbers have different resonance frequencies from each other within a frequency range of vibration of the base chassis which is generated in a utilized rotation speed range of the spindle motor.