| 摘要 |
A foldable and curvilinearly extensible structure fabricated from a plurality of foldable and extensible base modules. Each base module is fabricated from six rigid members swivelly connected end-to-end in a closed figure with intersecting rigid members being pivotally connected. The length of the first and fourth rigid members is selectively predetermined to provide the overall triangular configuration of the structure with a generally isosceles triangular configuration. Importantly, the placement of pivots in the second and fifth rigid members and the third and sixth rigid members is predetermined by the length to the midpoint of the first and fourth rigid members. A plurality of base modules are selectively interconnected at adjacent swivels to thereby provide the enlarged, foldable and curvilinearly extensible truss-like structure. A plurality of base modules may be selectively interconnected side-by-side and also in an end-to-end configuration to form an elongated, three-dimensional structure which folds into a relatively flat profile while, simultaneously, being extensible at a relatively high ratio and in a generally curvilinear contour. The respective rigid members can also be configurated as curved rigid members to thereby provide a generally toroidal contour to the curvilinearly extensible structure.
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