| 摘要 |
Each bar of the structure consists of a central tube 2 carrying stiffening fins 3 on its periphery. At its end, the central tube 2 is attached to a socket 5 whose opening 6 is passed through by a screw 10. The threaded part 9 of the screw 10 is fixed into a threaded opening 8 in a spherical node 7. A ring 12 integral in rotation with the screw 10 is arranged between the bar and the node 7. The part of the ring 12 which is closest to the node 7 comprises slits 14 into which there may slide tabs 15 attached to a clip 16 engaging the threaded part 9 of the screw 10. The invention applies to the building of spatial structures, particularly for construction. <IMAGE>
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