Locking device particularly for ski boots

Locking device, particularly for ski boots having two elements articulated to each other and adapted to be brought together, comprising a joining element, a preloadable torsion spring having an axis, an operating lever having a middle portion, at least one end and at least one other end, said at least one end having rigidly associated therewith at least one grip tab, said opposite end being pivotally attached to one of said two elements to be brought together at a pivot axis, said device further comprising a take-up spool, said take-up spool being internally housed in said lever substantially at said middle portion thereof, said joining element being attached to another of said two elements adapted to be brought together, said axis of said preloadable torsion spring being substantially parallel to said pivot axis, said preloadable torsion spring being accomodated internally at said spool and adapted for automatically rewinding said joining element around said spool, said spool being rotatable about a spool axis, said spool axis coinciding with said axis of said preloadable torsion spring, said lever and said take-up spool being ratatable about said pivot axis, said pivot axis being substantially spaced from said spool axis.