| 摘要 |
<p>The device has foldable blocks each including two rigid and parallel longitudinal panels (2) connected by hinges that include rigid arms (3, 4). The arms are articulated with each other on the panels by vertical axis (5) to provide different configurations to the block. Each of the arms has a V shaped part (10) for receiving horizontal iron (11) close to one of horizontal edges and close to articulation on the panels. The V shaped part comprises an elastic branch (4) to grip the iron to retain the iron by friction after insertion of the iron in the part.</p> |
