| 摘要 |
PURPOSE: An automatic balancing device for a disc rotation apparatus is provided to prevent the early deviation and the self-exited vibration of a steel ball by controlling the balance with fluid and prevent the introduction of dust and impurities by completely shielding a clamper in which the fluid is received. CONSTITUTION: An automatic balancing device for a disc rotation apparatus includes a rotation driving source(4) for generating a driving force, a supporting element such as a clamper(22) for closely fixing a disc medium(2) against the rotation driving source to rotate the disc medium by the driving force, and a fluid balancing element(30) provided to the clamper formed with stepped receiving elements for receiving a fluid(28) to correct a rotation unbalance of the supporting element by the movement of the fluid.
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