ENTANGLEMENT PREVENTING STRUCTURE

PROBLEM TO BE SOLVED: To prevent damage of a film surface flexible structure itself and obstruction of unfolding of a truss structure due to entanglement to a hinge or the like in a vibration at storage time or in the halfway of unfolding, in the truss structure. SOLUTION: In a truss structure constituted by upper/lower surface members 1,2 arranged in each side of a polygon in a polygonal pyramid base upper/lower surface, ridge line member 3 arranged in a ridge line of the polygon, hinge 4 connecting each member, and a film surface flexible structure 5 formed by a cable and a film surface, to be made capable of unfolding and being stored, a plurality of members radially arranged from the center of the truss structure to the ridge line member 3 and a film surface 7 extended between these members are provided, with storage of the truss structure, a pyramid is formed by the radially arranged member and the film surface.