Actuation and blocking system of a joint between a shoulder and a shelf of furniture or other furnishing items

An actuation and blocking system of a joint of a piece of furniture or other furnishing item having a shoulder and a shelf, base, or top to be positioned for stably interconnecting, with a joint, said shoulder and said shelf, base, or top arranged perpendicular to each other, said joint comprising:

• a pin having a casing and a threaded end protruding therefrom, said casing being at least partially inserted in a hole of the shelf, base, or top,
• wherein said casing has a side hole receiving a shaped stem, which extends from an actuation and blocking group of the joint positioned on said shelf, base, or top parallel to a floor or a ceiling, said actuation and blocking group of the joint providing a 90° transmission between an actuation point, which is accessible from a front or a side of the piece of furniture or other furnishing item, and said shaped stem, which is inserted in said side hole of said pin,
• wherein said pin contains an actuation mechanism adapted to rotate said threaded end protruding from the pin and to be screwed into a bush positioned in said shoulder,
• wherein a rotation of said threaded end is caused by said shaped stem of said actuation and blocking group of the joint, which is inserted in said side hole of said casing, and
• wherein said actuation and blocking group is rotatable on said shelf, base, or top so that a position of a maneuvering point providing access to said actuation and blocking group can be adjusted.