Resumen
Adjustable bar for mobile lattice structures comprising an inner central core bar (1) and two outer hollow cylindrical bars (2) that surround said core bar (1) forming a rigid mechanism configured to withstand axial forces, characterized in that: - the inner central core bar (1) has a constant section that is narrower than the outer bars (2) and comprises a groove (1a) over its entire length, said groove (1a) configured to slide longitudinally over it internal walls (2c) of the outer hollow cylindrical bars (2); where the inner central core bar (1) comprises: - a stop (1c) at each end of said inner central core bar (1) with respect to the hollow cylindrical outer bars (2), said stops (1c) configured to limit the opening of the outer bars (2) with respect to the bar core (1); and - a rough surface (1b) in the groove (1a) with a higher coefficient of friction by contact than the rest of the surfaces of the core bar (1); and where the adjustable bar comprises a pressure system (3) configured to adjust the outer hollow cylindrical bars (2), composed of a sliding piece (3a), a cylindrical contact surface washer (4) and a screw (3b), where said screw (3b) is configured to, when threaded, exert pressure between a rough surface of the sliding piece (3a) and the rough surface (1b) of the inner central core bar (1), so that the core bar inner center (1) exert pressure on the outer hollow cylindrical bar (2). (Machine-translation by Google Translate, not legally binding)