Patent ID: 7305683

Claim:
A disk rotation device which rotates a disk, comprising: a box-type housing having an opening at one end; a tray which is attached to the housing and movable between a first position, located outside the housing, where the disk is placed on the tray and a second position, located inside the housing, where the disk on the tray is rotated; and a plurality of locking units locking, when the tray is in the second position, the tray to walls of the housing where surfaces of the tray face the housing walls in a direction perpendicular to a movement direction of the tray, wherein one of the plurality of locking units is located on one of top and bottom walls of the tray and the other locking unit is located on the other of the top and bottom walls of the tray where each wall of the tray faces one of top and bottom walls of the housing in a direction perpendicular to the movement direction of the tray and perpendicular to a surface of the disk placed on the tray.