Optical disc device

An optical disc device comprising:

• a tray configured to hold an optical disc, be slidably pulled out from/inserted into a body of the optical disc device, and comprise an optical pickup for writing or reading data to or from the optical disc and a transfer unit for linearly moving the optical pickup in a radial direction of the optical disc;
• and
• a locking module that is mounted on a rear side of the tray for unlocking the tray from the body,
• locking module comprising:
• a locking part comprising a hook for engaging a locking projection formed on the body and being mounted to be rotatable;
• a circular gear being mounted to be rotatable in connection with the transfer unit;
• a first connecting part being mounted in such a way as to rotate by a linear force transmitted through the transfer unit moving outward;
• and
• a second connecting part being mounted in such a way as to rotate by a force transmitted sequentially from the first connecting part and the circular gear and to transmit torque to the locking part to cause the hook to be unlocked from the locking projection.