Lock device

A lock device adapted for a first object and a second object, the second object being linearly movable relative to the first object from a retracted position to an extended position in an opening direction or from the extended position to the retracted position in a retracted direction, the lock device comprising:

• a slider configured to be mounted on the first object;
• a driving module configured to drive the slider to move from a locking position to an unlocking position or to drive the slider to move from the unlocking position to the locking position;
• a latch pivotally connected to the slider and rotatable from an original state to a non-original state or from the non-original state to the original state;
• and
• a power module configured to provide electricity to the driving module;
• wherein when the second object is located at the retracted position relative to the first object, the driving module is configured to drive the slider to move to the locking position, so that the latch is partially inserted into a space of the second object to block the second object for locking the second object from moving from the retracted position;
• wherein when the driving module is not driven by the power module, a movement of the second object from the retracted position to a predetermined position between the retracted position and the extended position in the opening direction drives the latch to rotate from the original state to the non-original state by a predetermined angle for driving the slider to move from the locking position to the unlocking position.