Tray locking device of optical disc drive with anti-shock mechanism
View Patent ↗A tray locking device of an optical disc drive is adapted to lock and release a tray. The optical disc drive has an optical head engaged to a lead screw and driven to be moved by the lead screw. The tray locking device includes: a pushing member, disposed on the optical head; a first stop portion, disposed on the tray; a latching hook, adapted to latch and release a pin; and a transmission assembly, disposed between the pushing member and the latching hook and having a lever element and a weight block, wherein the lever element is movably disposed on the tray and has a second stop portion, and the first stop portion and the second stop portion can be coupled with each other.
1. A tray locking device of an optical disc drive, adapted to lock and release a tray, wherein the optical disc drive has an optical head engaged to a lead screw and driven to be moved by the lead screw, the tray locking device including:
a pushing member, disposed on the optical head;
a first stop portion, disposed on the tray;
a latching hook, adapted to latch and release a pin; and
a transmission assembly, disposed between the pushing member and the latching hook, and comprising a lever element and a weight block, wherein the lever element is movably disposed in the tray and has a second stop portion, and the first stop portion and the second stop portion is adapted to be coupled with each other;
wherein when the tray is to be ejected, the pushing member pushes the lever element and enters a loading segment of the lead screw;
wherein when the optical disc drive is subjected to an impact, the weight block pushes the lever element, such that the first stop portion and the second stop portion are coupled with each other.
2. The tray locking device of claim 1 , wherein the lever element has a driving portion, and the driving portion divides the lead screw into a reading segment and the loading segment.
3. The tray locking device of claim 2 , wherein the reading segment is between a first end of the lead screw and the driving portion, and the loading segment is between a second end of the lead screw and the driving portion.
4. The tray locking device of claim 1 , wherein the tray locking device comprises a position limiting elastic member, wherein the position limiting elastic member leans against the second stop portion, and provides an elastic force on the second stop portion.
5. The tray locking device of claim 4 , wherein when the tray is to be ejected, the position limiting elastic member restricts a rotation of the lever element, and the pushing member pushes the lever element and enters the loading segment; wherein when the optical disc drive is subjected to the impact, the weight block resists the position limiting elastic member and pushes the lever element, such that the first stop portion and the second stop portion are coupled with each other, so as to restrict a motion of the lever element and to prevent the pushing member from entering the loading segment.
6. The tray locking device of claim 1 , wherein the lever element has a sliding slot, and the sliding slot is slidably and rotatably connected to a rotation axle.
7. The tray locking device of claim 6 , wherein when the tray is to be ejected, the pushing member pushes the lever element to move relative to the rotation axle, and enters the loading segment; wherein when the optical disc drive is subjected to the impact, the weight block pushes the lever element to rotate relative to the rotation axle, such that the first stop portion and the second stop portion are coupled with each other.
8. The tray locking device of claim 1 , wherein when the first stop portion and the second stop portion are coupled with each other, the lever element is restricted from moving.