Barrel for a barrel joint for parts of furniture and furnishing items

1. A connector assembly for joining parts of furniture and furnishing items comprising:

a pin;

a hollow cylindrical body having a single pinion through-hole defined in an upper portion of a side surface thereof, for passage of a tip of a tool, the hollow cylindrical body having closed end surfaces at opposing ends of the hollow cylindrical body and containing a blocking element disposed therein, said cylindrical body having, on the side surface, opposing pin through-holes extending through diametrically opposing portions of the side surface, having aligned longitudinal axes, and defined in a lower portion of the hollow cylindrical body for receiving the pin inserted therethrough from outside into the hollow cylindrical body,

wherein said blocking element comprises:

a grub screw disposed to slide in its entirety axially inside said hollow cylindrical body so as to contact said pin, said grub screw having an internal threading, and

a threaded screw disposed inside said hollow cylindrical body and comprising a head, said threaded screw engaging said internal threading of said grub screw, and

a pinion disposed inside said hollow cylindrical body and aligned with the pinion through-hole for actuating the head of the threaded screw, wherein said pinion is rotatable in a housing formed in said hollow cylindrical body, wherein the head of the threaded screw and said pinion form a bevel gear,

wherein the pin is configured to extend perpendicularly from an end surface of a first panel and the hollow cylindrical body is configured to be received longitudinally within an end surface of a second panel, wherein the pin is inserted through the opposing pin openings in the cylindrical body and the bevel gear is actuated by the tool to rotate the pinion and the threaded screw and axially move the grub screw such that the grub screw engages the pin, wherein the engagement connects the pin and cylindrical body.

2. The connector assembly according to claim 1 ,

wherein said hollow cylindrical body comprises two half-shells adapted to be coupled with each other to form a hollow cylindrical casing containing said blocking element.

3. The connector assembly according to claim 2 , wherein said bevel gear comprises the pinion and a toothed crown, wherein said toothed crown is shaped as the head of the threaded screw, and wherein said grub screw is configured to be blocked against rotation, so to have an axial translation.

4. The connector assembly according to claim 3 , wherein said grub screw is configured to be blocked against rotation by radial protrusions of the grub screw, which are coupled inside complementary seats in said hollow cylindrical casing.