Abstract: A structure for pieces of furniture of variable configuration includes a plurality of different types of assembling elements, which are coupled with one another, in a stable and removable way, to support a desktop at a predetermined distance from the ground. The types of assembling elements include a sleeve, hollow inside and equipped, in its lateral wall, with male quick connection joint means, formed by a pair of pins. Another element is a bar for coupling with a pair of the sleeves, and being equipped, at both extremities, with female quick connectors, which include a pair of blocks featuring a longitudinal hole, which receives the pins, and a through hole containing a dowel for locking the pins. The desktop is supported by desktop bearing brackets. Moreover, legs are fastened to the sleeves to support the bar and the sleeves at a predetermined distance from the ground.

Abstract: The proposed connecting system for modular structures, in particular tables and/or desks, includes a junction block, which features a pair of coplanar horizontal plates. Support and stabilization means of a pair of bars are connected to the horizontal plates. The support members support the junction block.