| 摘要 |
<p>Collapsible structures are provided comprising at least two flexible loop members (22, 24), each having an expanded position and a collapsed position. At least two of the loop members (22, 24) cross each other at a first overlapping point (26) along first edges (30, 34) of the loop members and at a second overlapping point (28) along second edges (32, 36) of the loop members, the at least two crossing loop members (22, 24) defining a hinge portion about which the loop members are pivotable. A fabric (40, 42) is provided to substantially cover each loop member, the fabrics of respective loop members crossing one another along the hinge portion. <IMAGE></p> |
