| 摘要 |
<p>A self-erecting box structure which, in an erect condition, comprises first, second, third and fourth walls (11, 12, 13, 14), first, second, third, and fourth hinge connections (15, 16, 17, 18) interconnecting respectively the adjacent edges of the four walls (11, 12, 13, 14), the four hinge connections having axes of hinging movement generally coincident with the adjacent longitudinal edges of their respective walls, said second and fourth walls (12, 14) each being defined by first and second portions (12a, 12b; 14a, 14b) interconnected by respective fifth and sixth hinge connections (29, 31), the structure being capable of being collapsed said structure further including resilient means (35) stressed by collapsing movement of the box structure from an erect condition to a collapsed condition and, abutment means (19) against which said second and fourth walls (12, 14)abut in the erect condition of the box structure.</p> |
