Patent ID: 6883173

Claim:
A disk device capable of storing a plurality of disks therein comprising: a mandrel mechanism having a groove portion formed on a peripheral edge portion thereof, loosely fitted into an inner diameter of said plurality of disks, and movable in its axis direction by a rotation; a plurality of supports respectively provided for said disks, having respectively a support portion formed for respective said disks to support a part of the disk in abutting manner, and having respectively projecting portions formed on inner peripheral edge portion to be slidably fitted in said groove portion and to move sliding through said groove portion along a direction at the rotational axis of said disk which corresponds to a rotation of said mandrel mechanism; and a disk holder holding an outer peripheral portion of the disk located on the axis of said mandrel mechanism, to change a height of a disk holding position; wherein said mandrel mechanism is constituted with a first mandrel mechanism having first and second ends, the first end of which is fixed to a ceiling portion of a housing of the device, and a second mandrel mechanism having first and second ends, the first end of which is fixed to a bottom portion of the housing of the device, and the second ends of said first and second mandrel mechanisms are connected together or divided away according to an operating mode of said disk with regard to a direction of rotational axis of said disk loosely fitted; and when said mandrel mechanism is loosely fitted to the disk said disk holder holds the disk, and said second end of said second mandrel mechanism is connected to said second end of said first mandrel mechanism in a state that said disk is raised to a height abutting upon said supports of said ceiling portion side formed on said first mandrel mechanism.