Abstract: A collapsible container includes a lower frame, an upper frame, lateral plates, and a pair of lid plates. On the upper frame or the pair of lid plates, a plurality of positioning protrusions is provided to protrude upward along a circumferential edge of the upper frame. An installation surface of a bottom plate includes a first groove into which the positioning protrusions of a lower one of each pair of vertically adjacent collapsible containers stacked up are fitted, a second groove into which the positioning protrusions of a lower one of each pair of vertically adjacent collapsible containers stacked in a pinwheel configuration are fitted, and a plurality of third grooves that is formed parallel to long sides of the bottom plate and into which support rails are fitted. The third grooves are smaller in depth from the installation surface than the first groove and the second groove.

Abstract: A collapsible container includes a lower frame, an upper frame, lateral plates, and a pair of lid plates. The upper frame includes a pair of opposed first lateral surfaces and a pair of second lateral surfaces. The pair of lid plates includes one or more connection arms that are pivotably supported to connection shafts supported to one or more lid plate support portions formed on the second lateral surfaces. The connection arms include bearings receiving the connection shafts slidably inserted thereinto and include a pair of engagement protrusions that is formed on an outer circumferential surface of at least one of the bearings and is composed of a first engagement protrusion and a second engagement protrusion different in circumferential position from each other. The lid plate support portions each include an angle restrictor to be engaged with the first engagement protrusion and the second engagement protrusion.

Abstract: A collapsible container includes a lower frame, an upper frame, a pair of flip-up lateral plates, a pair of divided lateral plates, and a pair of lid plates. Each of the pair of divided lateral plates includes an upper lateral plate, a lower lateral plate, and a hinge. On outer lateral surfaces of the upper lateral plate and the lower lateral plate, a plurality of upper reinforcement ribs and a plurality of lower reinforcement ribs are formed, respectively, astride the hinge. Convexities are formed on one of the upper reinforcement ribs and the lower reinforcement ribs. When the divided lateral plates are in a bent state, the upper reinforcement ribs are opposed to upper parts of the lower reinforcement ribs, and the convexities contact the other of the upper reinforcement ribs and the lower reinforcement ribs.