Patent ID: 6758354
Filing Date: 2004-07-06
Classification: G09F,Y10T

Abstract:
A collapsible three-dimensional framework, such as a display stand, including a plurality of tubular rods (10) connected to each other by means of articulation joints, each of which joints consists of a block (12) of a substantially parallelepipedal shape which has a plurality of cavities (18) each of which is open on a respective side face (20) and on a back face (22) of the block (12), and in which cavities there are inserted the ends of respective rods (10) which are connected to the block (12) by transverse pivot pins (24), fastened to the rods (10), extend from the rods in diametrically opposite positions and are engaged in respective articulation seats (32) formed in the block (12) and open to the corresponding cavities (18) in opposite lateral positions, in that the block (12) is subdivided into two piecess (28, 30) which match with each other according to a separation plane which is parallel to its back face (22) and located in correspondence with the articulation seats (32) each of which are located in only one of the two pieces, and in that two pieces (28, 30) of the block (12) are secured to each other by relaesable fastening means (40, 42) in such a manner as to allow the insertion of the pivot pins (24) with a movement substantially perpendicular to the separation plane when the two pieces (28, 30) of the block (12) are separate and to entrap the pivot pins (24) in the seats (32) when these two pieces are joined to each other.