| 摘要 |
A collapsible framework is constructed of rods pivotally joined at their ends to hubs to form a self-standing unit when expanded and to fold into a small set of nearly parallel rods when folded. In one embodiment in which the expanded frame forms an array of cubicles, the hubs are designed to pivotally join the ends of four rods, with the plane defined by the pivot axes of one pair of opposing rods being offset from the plane defined by the pivot axes of the other pair of opposed rods attached to the same hub. One pair of rods attached to each hub can pivot on one of several pivot points on extended hub flanges to thereby provide expanded frameworks of various arcuate configurations. A stab-connection latch locks two hubs together and secures the framework in the expanded position. Folding channel bars are attached to knobs on vertically aligned hubs by keyslots. The keyslots of one channel bar are of progressively shorter length going from the topmost to the bottommost of the vertically aligned hubs to which the bar is attached. The folding channel bars have adjustable friction-type hinge pins for controllably folding sections of the channel bars.
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