| 摘要 |
<p>An expandable structure has a core structure which may be expanded on a selecfed side into a composite structure incorporating the core structure and a contiguous expanded section. The selected sidewall (14) of the core structure rotates up to become the roof of the expanded section. The sidewall (26), endwalls (27) and floor (37) section of the expanded section are hinged to the frame of the core structure and stacked vertically against the selected sidewall/roof but do not take up significant floor space within the core section. Expansion is accomplished by power beams (21,73) housed within the roof and subflooring of the core structure. The sequence of expansion includes the steps of (a) rotating the selected sidewall/roof (14) to a horizontal position as the roof of the expanded section by power beams (21) housed within the roof of the core section; (b) driving the sidewall (26) of the expanded I section outwardly by power beams (73) housed within the subflooring of the core structure; (c) driving the endwalls (27) outwardly; and (d) rotating the floor (37) of the expanded section downwardly to form an extension of the floor of the core section. I</p> |
