A portable bed having a foldable main frame assembly that includes a strap assembly for attaching the portable bed to a standard bleacher seat with an adjustable length strap assembly that includes a clamp for gripping the standard bleacher seat wherein the foldable main frame also includes a plurality of adjustable leg assemblies that can be adjusted for height and to match the angle of unlevel surfaces upon which the portable bed is positioned.

A backpack frame is convertible from a frame position to a cot position. The backpack frame includes: a first U-shaped member having a closed end and an open end, a first intermediate member having a distal end and a proximal end, the proximal end is hingably connected to the open end of the first U-shaped member, a second intermediate member having a distal end and a proximal end, the distal end of the first intermediate member is hingably connected to the distal end of the second intermediate member, a second U-shaped member having a closed end and an open end, the proximal end of the second intermediate member is hingably connected to the open end of the second U-shaped member. In the frame position, the first U-shaped member, the first intermediate member, the second intermediate member, and the second U-shaped member lie in a single plane.

A backpack frame is convertible from a frame position to a cot position. The backpack frame includes: a first U-shaped member having a closed end and an open end, a first intermediate member having a distal end and a proximal end, the proximal end is hingably connected to the open end of the first U-shaped member, a second intermediate member having a distal end and a proximal end, the distal end of the first intermediate member is hingably connected to the distal end of the second intermediate member, a second U-shaped member having a closed end and an open end, the proximal end of the second intermediate member is hingably connected to the open end of the second U-shaped member. In the frame position, the first U-shaped member, the first intermediate member, the second intermediate member, and the second U-shaped member lie in a single plane.

A backpack frame is convertible from a frame position to a cot position. The backpack frame includes: a first U-shaped member having a closed end and an open end, a first intermediate member having a distal end and a proximal end, the proximal end is hingably connected to the open end of the first U-shaped member, a second intermediate member having a distal end and a proximal end, the distal end of the first intermediate member is hingably connected to the distal end of the second intermediate member, a second U-shaped member having a closed end and an open end, the proximal end of the second intermediate member is hingably connected to the open end of the second U-shaped member. In the frame position, the first U-shaped member, the first intermediate member, the second intermediate member, and the second U-shaped member lie in a single plane.

A multi-purpose folding frame and a multi-purpose folding frame module are disclosed. The multi-purpose folding frame comprises a surface board and two leg frames installed on the two ends of the bottom surface of the surface board, which can be folded in relation to the surface board for convenient storage. The bottom end surface of the surface board is configured with a support lock frame. The support lock frame and the hinge rod hinged on the lower end surface of the surface board are fixed on the support lock bar on the tip end of the hinge rod. The inner side of the leg frame is configured with a lock seat. The lock seat is configured with a lock groove.

A multi-purpose folding frame and a multi-purpose folding frame module are disclosed. The multi-purpose folding frame comprises a surface board and two leg frames installed on the two ends of the bottom surface of the surface board, which can be folded in relation to the surface board for convenient storage. The bottom end surface of the surface board is configured with a support lock frame. The support lock frame and the hinge rod hinged on the lower end surface of the surface board are fixed on the support lock bar on the tip end of the hinge rod. The inner side of the leg frame is configured with a lock seat. The lock seat is configured with a lock groove.

The present invention discloses a foldable bracket, where a first connecting member and a second connecting member are respectively placed at two ends of a retractable rod body; a first support crossbar is rotatably connected to the first connecting member; a first support rod is rotatably connected to a second support rod, and the first support rod is rotatably connected to the first connecting member; the second support rod is rotatably connected to the second connecting member, and the second support rod is rotatably connected to the first support crossbar; a first rod body is rotatably connected to a second rod body, an end of the first rod body away from the second rod body is rotatably connected to the first support crossbar, and an end of the second rod body away from the first rod body is rotatably connected to the second connecting member.

The present invention discloses a foldable bracket, where a first connecting member and a second connecting member are respectively placed at two ends of a retractable rod body; a first support crossbar is rotatably connected to the first connecting member; a first support rod is rotatably connected to a second support rod, and the first support rod is rotatably connected to the first connecting member; the second support rod is rotatably connected to the second connecting member, and the second support rod is rotatably connected to the first support crossbar; a first rod body is rotatably connected to a second rod body, an end of the first rod body away from the second rod body is rotatably connected to the first support crossbar, and an end of the second rod body away from the first rod body is rotatably connected to the second connecting member.

A foldable base plate of an elastic mattress, the foldable base plate includes a plurality of mounting modules, the plurality of mounting modules and connecting modules are alternately spliced to form the foldable base plate, the plurality of mounting modules are disposed with tapered positioning members, the tapered positioning members are protruding cavity structures extending upward from the plurality of mounting modules, the plurality of mounting modules and the connecting modules are configured to be folded along a vertical direction to form a stacked structure, and when the foldable base plate forms the stacked structure: two adjacent ones of the plurality of mounting modules are connected by plugging through corresponding ones of the protruding cavity structures, and a corresponding one of the protruding cavity structures on a lower mounting module is inserted into a corresponding one of the protruding cavity structures on an upper mounting module.

A foldable base plate of an elastic mattress, the foldable base plate includes a plurality of mounting modules, the plurality of mounting modules and connecting modules are alternately spliced to form the foldable base plate, the plurality of mounting modules are disposed with tapered positioning members, the tapered positioning members are protruding cavity structures extending upward from the plurality of mounting modules, the plurality of mounting modules and the connecting modules are configured to be folded along a vertical direction to form a stacked structure, and when the foldable base plate forms the stacked structure: two adjacent ones of the plurality of mounting modules are connected by plugging through corresponding ones of the protruding cavity structures, and a corresponding one of the protruding cavity structures on a lower mounting module is inserted into a corresponding one of the protruding cavity structures on an upper mounting module.