Patent attributes
A disk driving apparatus includes 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. Preferably, 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 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.
