Patent ID: 7222350

Claim:
A disk drive comprising: a casing defining a longitudinal axis; a disk tray disposed within said casing and movable between an extended position, in which, the disk tray extends outwardly from the casing, and a retracted position, in which, the disk tray retracts inwardly into said casing; and a gear transmission system including a first gear disposed within said casing, a gear transmission unit including a second gear and a third gear, rotation of said second and third gears resulting in movement of said disk tray between said extended and retracted positions, and a driving plate disposed within said casing to extend in a transverse direction relative to said longitudinal axis of said casing, and movable along said transverse direction to left and right sides of said casing, said driving plate having a right serrated portion meshed with said first gear, and a left serrated portion disposed adjacent to and facing said third gear, said driving plate being operably associated with said disk tray in such a manner that said left serrated portion of said driving plate starts to engage with said third gear during inletting of said disk tray to said retracted position so as to be driven by said third gear, wherein said driving plate further having an open-ended slot formed at the left end of said driving plate and adjacent to said left serrated portion in such a manner to provide resilience when said left serrated portion is engaged with said third gear.