| 摘要 |
A unitized foldable tent framework includes a plurality of elongated roof members pivotally connected at their upper ends to a central hub and at their lower ends to elongated wall members. Perimetric interconnection of the roof members, in the form of a line which may be elastic, extends around the pivotal connections between the roof and wall members to form a loop whose perimeter length increases and decreases so as to expand and contract the separation between the lower ends of adjacent roof members. Elongated tubular eave members, formed in connectable sections, concentrically enclose the perimetric interconnection between adjacent roof members, with the eave members also being pivotally connected to the pivotal connection between the roof and wall members. Wall members extending downward from adjacent pivotal connections are flexibly joined at their lower ends in pairs. The pivotal connection of the elongated roof, wall, and eave members includes a hub member and a hub lock member, each having a plurality of U-shaped openings about its perimeter, which are connected so as to rotate about a common central axis. The U-shaped openings are aligned to allow the elongated members to pivot unimpeded at their connection to the hub member; when the hub lock member is rotated, its U-shaped openings are replaced by projections which restrain the elongated members from pivotal movement. The projections of the hub lock member may include a radial groove and beveled lateral surfaces.
|
