| 摘要 |
<p>Construction assembly for spatial structures that are based on bars joined at nodes, which comprises at least one central element (1, 1A, 1B, 1C), a plurality of bars (3, 3A, 3B), and, for each bar, four screws (2, 2A, 2B) for joining each end of said bar to a central element (1, 1A, 1B, 1C) by means of two of the screws. At least one of the screws has a threaded first part (21) that is more distal and a threaded second part (22) that is more proximal with respect to a head (23) of the screw. The threaded first part and the threaded second part are separated by a stop surface (24) configured in order to abut against the central element (1, 1A, 1B, 1C) when the screw is threaded in the central element, and the threaded first part and the threaded second part are threaded in opposite directions.</p> |
