Lid cover having a locking mechanism and container assembly including the lid cover

A lid cover having a locking mechanism comprising:

• a cap (7);
• a connector body (8) connectable to the cap (7) and having a button (10), the button (10) being constructed to be movable between a first position where the button (10) is engaged with the cap (7) to cover the connector body (8), and a second position where the button (10) is separated from the cap (7) to open up the cap (7);
• wherein the locking mechanism comprises a knob (11) operably connected to the button (10), and capable of being moved between a locked position where the knob (11) restrains the button (10) in the first position, and an unlocked position where the knob (11) allows the button (10) to be released from the first position causing the button (10) to move into the second position;
• and
• wherein the button (10) moves laterally with respect to a longitudinal axis of the lid cover, and the knob (11) is rotatably mounted and sleeved around the button (10);
• the knob is capable of rotating around the button (10) between the locked and unlocked positions.