A folded architectural panel folded from a flat sheet, the panel having opposite longitudinal ends extending in a width direction, opposite lateral sides extending in a length direction and a depth perpendicular to the width and length directions. The panel includes a first downward fold adjacent one longitudinal end, extending in the width direction, and having opposite fold ends at the respective lateral sides of the panel; a second downward fold adjacent the other longitudinal end, extending in the width direction, and having opposite fold ends at the respective lateral sides of the panel; and a central upward fold at a central portion of the panel between the first and second downward folds; the first downward fold, the second downward fold and the central upward fold enable contraction of the opposite end folds towards each other to cause folding of the first and second end folds and an increase in the depth of the panel at the central portion. The panel further includes two pairs of respective side upward folds extending from the four opposite fold ends of the first and second end folds to the central upward fold such that, with contraction of the opposite end folds towards each other, a respective section of each respective lateral side between two respective fold ends contracts inwardly towards the opposite lateral side and a respective sidewall is formed on each respective lateral side of the panel extending from the respective pair of side upward folds in the depth direction.

A foldable tubular construct/element with one rigid degree of freedom is of a tubular construction formed by a number of single layered annular units which are connected in sequence; each single layered annular unit is of a prism having N ridge lines; two adjacent prisms each having N sides are connected to each other by sharing a polygon with N sides formed on an intersection plane; each prism with N ridge lines is composed of N rigid planar quadrilateral facets; two adjacent single layered annular units comprise N spherical mechanisms formed by the intersections of only four planar quadrilateral facets at each apex; the polygon having N sides formed in the intersection plane of the two adjacent single layered annular units is a planar polygon with an arbitrary number of sides greater than for a triangle; the ridge lines of each prism having N ridge lines are parallel to each other; the connecting ridge lines of the tubular element are coplanar; when the polygon having N sides formed in the intersection plane of the two adjacent single layered annular units is a line-symmetric polygon of even number of sides with at least one diagonal symmetric axis, the plane in which connecting ridge lines of the tubular element are located is perpendicular to one diagonally symmetric axis.

An objective of the present invention is to provide a deployable structure which enables an element even with high rigidity to be folded. A deployable structure (1A) includes a pair of belt-shaped elements (3A, 3A) and a connecting element (4A), wherein the connecting element (4A) connects the pair of belt-shaped elements (3A, 3A) so as to be freely deformable between a folded state and a deployed state, with corners (307) of the pair of belt-shaped elements (3A, 3A) being in contact with each other on their front faces (301) on one side in a thickness direction of the pair of belt-shaped elements (3A, 3A), wherein the pair of belt-shaped elements (3A, 3A) extends in parallel to a predetermined plane xy in the folded state and perpendicular to the predetermined plane xy in the deployed state. Ends of the front faces (301) of the belt-shaped elements (3A, 3A) are connected to the connecting element (4B) via first bent portions (5) which are bendable along the ends. Lateral faces (303, 304) of the pair of belt-shaped elements (3A, 3A) have second cutouts (308) which avoid an interference of the pair of belt-shaped elements (3A, 3A) in the deployed state.

A flexible article is provided having a core formed from a plurality of laminar panels that are inter-connected to provide an expandable structure upon movement of the panels away from each other. Opposite ends of the core terminate in a pair of end panels whereby the end panels may be moved apart to expand the expandable structure. Each of the panels are made from wood material. The panels, for example, include two wood sheets with longitudinally oriented grains and a flexible backing sheet that is sandwiched and adhered between the two wood sheets.

Collapsible structures are disclosed. In one embodiment, the collapsible structure includes a plurality of hinges and a plurality of panels. The plurality of panels are swingably connected by the plurality of hinges so as to form at least one arch when the collapsible structure is in an erected state and so as to become at least one stack of the plurality of panels in a collapsed state. The panels allow for the collapsible structure to maintain its structural integrity when erected but to have a compact and transportable configuration when collapsed.

A flexible article is provided having a core formed from a plurality of laminar panels that are inter-connected to provide an expandable structure upon movement of the panels away from each other. Opposite ends of the core terminate, in a pair of end panels whereby the end panels may be moved apart to expand the expandable structure. Each of the panels are made from wood material. The panels, for example, include two wood sheets with longitudinally oriented grains and a flexible backing sheet that is sandwiched and adhered between the two wood sheets.

A flexible article is provided having a core formed from a plurality of laminar panels that are inter-connected to provide an expandable structure upon movement of the panels away from each other. Opposite ends of the core terminate in a pair of end panels whereby the end panels may be moved apart to expand the expandable structure. Each of the panels are made from wood material. The panels, for example, include two wood sheets with longitudinally oriented grains and a flexible backing sheet that is sandwiched and adhered between the two wood sheets.

Collapsible structures are disclosed. In one embodiment, the collapsible structure includes a plurality of hinges and a plurality of panels. The plurality of panels are swingably connected by the plurality of hinges so as to form at least one arch when the collapsible structure is in an erected state and so as to become at least one stack of the plurality of panels in a collapsed state. The panels allow for the collapsible structure to maintain its structural integrity when erected but to have a compact and transportable configuration when collapsed.

Collapsible structures are disclosed. In one embodiment, the collapsible structure includes a plurality of hinges and a plurality of panels. The plurality of panels are swingably connected by the plurality of hinges so as to form at least one arch when the collapsible structure is in an erected state and so as to become at least one stack of the plurality of panels in a collapsed state. The panels allow for the collapsible structure to maintain its structural integrity when erected but to have a compact and transportable configuration when collapsed.

To provide a foldable structure to which stiffness is imparted so that non-uniform extension and contraction is inhibited even when each surface is formed of a flexible material, a manufacturing method and a manufacturing device of the foldable structure, and a non-transitory computer-readable computer medium storing a program. A foldable structure including at least two tubular structures in which the two tubular structures include a shared surface array which is continuous shared surfaces shared by each other, and a twisting characteristic in the shared surface array of one tubular structure is in a direction opposite to that of the twisting characteristic in the shared surface array of the other tubular structure.