Device for joining of parts of furniture and furnishing accessories

A joining device (10) for parts of furniture and furnishing accessories, of a shelf unit, bookcase, drawer unit, bed frame, seating type, comprising a casing or container body (11) suitable for being inserted in a seat formed in one of the parts of furniture to be joined and provided with an expansion bushing (24) externally projecting with respect to an open end of said casing or container body and suitable for engaging with a further seat of a further part of furniture to be joined wherein the casing or containment body (11) is inserted, said joining device further comprising a cam mechanism (26) for a linear and reciprocated motion of actuation means co-operating in an expansion deformation movement of the expansion bushing (24) and in a backward and traction movement of said expansion bushing, with said cam mechanism and actuation means housed in the casing or container body (11) and actuated by a tool (54), said means of actuation of the bushing comprising a lower slider (20) and an upper slider (22) overlapping and reciprocally sliding by means of said cam mechanism (26).