Patent ID: 8793711

Claim:
A tray locking device adapted to an optical disc drive for locking and releasing a tray, the optical disc drive having an optical head, the optical head being connected to a lead screw and driven to move by the lead screw, the tray locking device comprising: a pushing member driven to move by the lead screw; a latching hook for latching and releasing a protruding pin; and a transmission assembly configured between the pushing member and the latching hook, the transmission assembly comprising a first rod and a second rod, the first rod and the second rod being movably configured in the tray, the first rod having a first driving portion, the second rod having a second driving portion, wherein when the transmission assembly is located at an initial position, the first driving portion is located on a moving path of the pushing member, while the second driving portion is not located on the moving path of the pushing member, wherein when the tray is to be ejected, the lead screw drives the pushing member to push the first driving portion, such that the first rod drives the second rod to move, and that the second driving portion is moved to the moving path of the pushing member.