LOCKING SYSTEM ON THE BALL OF A TOW HOOK FOR MOTOR VEHICLES

A closing system (10) on the ball (12) of a tow hook (11) for motor vehicles is described comprising a structure (1) comprising a first fixed snail nut (2A) and a second mobile snail nut (2B), a movement system (15, 16) configured to operate the second mobile snail nut (2B) by locking or unlocking a ball (12) of the tow hook (11) between the two snails (2A, 2B), the movement system (15) being operated by a lever (3) and the closing system (10) comprising locking means (4, 5) configured to stop the lever (3) when it is in a closed position, preventing it from lifting and unlocking the ball (12) by activating the movement system (15, 16) and the movable snail nut (2B).