Joining device with minimum visibility for parts of furniture and furnishing items

A joining device with minimum visibility for parts of furniture and furnishing items, joining a first panel and a second panel, which must be moved towards each other according to an approach direction to bring a face of the first panel in a tightening position against a side of the second panel, said joining device comprising:

• a blocking group;
• and
• a connection group,
• at least part of said connection group being assembled in said second panel before final coupling of said first and second panels against each other,
• said first panel comprising a seat for said blocking group which is contained within a thickness thereof, and
• said seat having a longitudinal axis which is perpendicular to said approach direction, and extends from a side of said first panel towards an inside thereof,
• wherein said blocking group is provided inserted inside said seat before a final coupling of said first and said second panels against each other,
• wherein said blocking group acts on a pin of the connection group to be blocked, the pin being positioned in a first opening defined in the face of the first panel and extending from a hole formed in the side of said second panel,
• wherein said blocking group comprises a rotating cam in said seat of said first panel, which engages said pin and which is provided with an activation element for rotation, said rotating cam being rotatable around an axis perpendicular to the side of the first panel, and
• wherein said rotating cam is positioned in an intermediate portion of a cylinder which provides, in an upper portion, a perimetric toothing, embedded with respect to a side surface of the cylinder and accessible through a second opening defined on a face of said first panel, the perimetric toothing being adapted to be engaged by an operating tool inserted in the second opening.