Patent ID: 8332879

Claim:
An optical disk drive for recording and reproducing information with respect to an optical disk by inserting a tray, on which the optical disk is placed, into a chassis, the optical disk drive comprising: a locking mechanism which engages the inserted tray with the chassis; a reset arm provided in the tray to return the locking mechanism to an initial state; and an engaging boss that is provided in the chassis and is engaged with the reset arm, wherein the tray has a projecting portion for controlling the engagement position between the reset arm and the engaging boss; wherein the locking mechanism comprises: a lock shaft provided in the chassis; a lock arm that is provided in the tray and is engaged with the lock shaft; and a release arm for releasing the engagement of the lock arm, wherein the reset arm returns a movable piece, which is associated with the release arm, to an initial position with respect to a solenoid that absorbs the movable piece, so that the locking mechanism is returned to the initial state.