| 摘要 |
<p>The expanding device comprises a first and second laminar unit (10, 20) arranged such that they can slide in a guided manner along each other. The first laminar unit (10) has at least a first anchoring configuration (121) and a first push region (11), and the second laminar unit (20) has a second anchoring configuration (221) and a second push region (21). The first anchoring configuration (121) of the first laminar unit (10) is located nearer to the second push region (21) of the second laminar unit (20) than the second anchoring configuration (221), and vice versa. An elastic traction element (301) is connected to said first and second anchoring configurations (121, 221), and the push regions (11, 21) press internally against said folding structure to expand it by the force of said elastic traction element (301).</p> |
