Abstract: A door-lock device having a casing, a slider, arranged within said casing, a locking hook with a body and a locking portion, said body having a cam shape which abuts said slider, said locking hook capable to assume a rest position, in which said locking portion is disengaged from said recess, and an operative position, in which said locking portion is inserted, and engaged with, said recess, and pushing capabilities, for keeping said slider in contact with said cam surface, so when said door is closed, said locking hook passes from said rest position to said operative position, said cam shape compressing said pushing capabilities, so that said pushing capabilities accumulate energy and said slider exerts a resistance to the closing of said door, and, then, allowing said pushing capabilities to release said energy, so that said slider exerts a return action on said locking hook and on said door.