Passive retraction of a hub clamp in an optical disc drive
AssigneeInternational Business Machines Corporation
InventorsDaniel Smith, David Jame Altknecht, John Best
Life of this patent
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Abstract
Embodiments for passive retraction of a hub clamp in an optical disc drive. The optical disc drive may comprise a spindle hub coupled to an optical assembly. The optical disc drive may further include a disc clamp assembly configured to hold an optical disc on the spindle hub, the disc clamp assembly including a hub clamp partially comprised within a clamp carriage. The hub clamp of the optical disc drive may be biasedly drawn toward the spindle hub when in a first position and biasedly drawn toward the clamp carriage when in a second position. The bias may be generated by at least one ferromagnetic material integrated into the hub clamp and at least one ferromagnetic material integrated into the spindle hub.
Claims15
An optical disc drive, comprising:
- a spindle hub coupled to an optical assembly;
- a clamp carriage having at least one first magnet integrated therein at a position on a member opposite the spindle hub;
- and
- a disc clamp assembly configured to hold an optical disc on the spindle hub, the disc clamp assembly including a hub clamp partially comprised within the clamp carriage;
- wherein the hub clamp includes at least one second, induced magnet integrated into an inner portion thereof proximal to the spindle hub;
- and wherein the hub clamp is biasedly drawn toward the spindle hub by the at least one second, induced magnet drawing toward at least one third magnet integrated into the spindle hub proximal to the inner portion of the hub clamp when in a first position, and biasedly drawn toward the clamp carriage by the at least one second magnet drawing toward the at least one first magnet when in a second position.
An optical disc drive, comprising:
- an enclosure assembly;
- a spindle hub coupled to an optical assembly comprised within the enclosure assembly;
- a clamp carriage having at least one first magnet integrated therein at a position on a member opposite the spindle hub;
- and
- a disc clamp assembly comprised within the enclosure assembly and configured to hold an optical disc on the spindle hub, the disc clamp assembly including a hub clamp partially comprised within the clamp carriage, wherein the hub clamp includes at least one second, induced magnet integrated into an inner portion thereof proximal to the spindle hub;
- wherein:
- when in a first position, the hub clamp is biasedly drawn toward the spindle hub by the at least one second, induced magnet drawing toward at least one third magnet integrated into the spindle hub proximal to the inner portion of the hub clamp such that at least a disc contacting portion of the hub clamp protrudes from an aperture of the clamp carriage toward the spindle hub;
- and
- when in a second position, the hub clamp is biasedly drawn toward the clamp carriage by the at least one second magnet drawing toward the at least one first magnet such that the disc contacting portion of the hub clamp is substantially flush with the aperture of the clamp carriage, wherein the hub clamp is biasedly drawn between the first position and the second position.
A method of manufacturing an optical disc drive, comprising:
- providing a spindle hub coupled to an optical assembly;
- providing a clamp carriage having at least one first magnet integrated therein at a position on a member opposite the spindle hub;
- and
- providing a disc clamp assembly configured to hold an optical disc on the spindle hub, the disc clamp assembly including a hub clamp partially comprised within the clamp carriage;
- wherein the hub clamp includes at least one second, induced magnet integrated into an inner portion thereof;
- and wherein the hub clamp is biasedly drawn toward the spindle hub by the at least one second, induced magnet drawing toward at least one third magnet integrated into the spindle hub proximal to the inner portion of the hub clamp when in a first position, and biasedly drawn toward the clamp carriage by the at least one second magnet drawing toward the at least one first magnet when in a second position.
Dependencies are inferred from the claim text.