Spatial structure

A spatial structure comprising at least:

• one node (1) with a plurality of sockets (2), wherein each socket has coupling means (7),
• one bar (3) which is to be inserted at either of the two ends thereof into the sockets (2) of the nodes (1) and wherein said ends each comprise at least one retaining element (4),
• one perforated screw (5) whose inner surface (6) allows the insertion of the end of the bar (3) and whose outer surface has coupling means (7′) formed by a male threaded portion complementary to a similar female thread that forms the coupling means (7) of the sockets (2) and
• a portion of flexible washer (8 8′) that covers a circular arc of circumference suitable for insertion into the socket (2) of the node (1) and being closed by means of compression as a result of the thrust of the perforated screw (5) in order to adopt the shape of a substantially closed washer which cooperates with the retaining element (4) of the end of the bar (3), such that said bar (3) is locked inside the perforated screw (5), thus preventing disassembly of the assembly but not the rotation of the bar (3) within the socket (2);
• where in order to close the portion of flexible washer (8) by compression as a result of a thrust by means of a perforated screw (5), the perforated screw (5) has an inclined plane (14) with an angle α intended for coupling at an inclined plane (14′) with the same angle a as the portion of flexible washer (8),
• characterized in that the portion of flexible washer (8) comprises:
• a thin strip (10) that corresponds to the outer diameter thereof, and
• on the inner diameter of said strip (10), a plurality of teeth (11) greater in thickness than the strip (10), which project inwards and wherein said teeth (11) alternate with empty areas where only the strip (10) is found, forming a portion of ring gear;
• and in that
• the retaining element (4) of the bar (3) for retaining the portion of flexible washer (8) is formed by a perimeter step.