Foldable box connection structure, foldable box and method of using the same

A foldable box, characterized in that:

• a first state of the foldable box is a compressed and flat state, whereas a second state of the foldable box is an expanded three-dimensional spatial state, which forms an accommodation space;
• the foldable box includes:
• a first lifting board (10), a first top plate (7), a first side plate (2), a bottom plate (1), a third side plate (12), a second top plate (13), and the second lifting plate (15), which are configured to be sequentially folded;
• defining an edge of connection between the first side plate (2) and the first top plate (7) as a first connecting edge;
• the foldable box further comprises two second side plates (3), and the two second side plates (3) are respectively folded and connected to two adjacent sides of the first connecting edge on the first side plate (2) in a one-to-one correspondence, defining an edge connecting the second side plate (3) and the first side plate (2) as a second connecting edge, each second side plate (3) includes a bottom edge (31), the first hinge (5) and a second hinge (6) the first hinge (5) and the second hinge (6) are respectively correspondingly arranged on the adjacent sides on both sides of the second connecting edge;
• the second hinge (6) is a double crease folding structure, and the two creases in the double crease are defined as a fifth crease and sixth crease respectively, and middle area between the two creases is called a second movable area, an area outside the second movable area is defined as the outer area, wherein the outer area of the fifth crease is attached to the second side plate (3), and the outer area of the sixth crease is connected to the bottom plate (1) through a fixed connection;
• when the second side plate (3) and the bottom plate (1) are folded into a planar structure configuration, the bottom plate (1) and the first side plate (2) are expanded at a maximum angle, and the second movable area covers the fifth crease on the outer area, and the second movable area is attached to the bottom plate (1);
• when the second side plate (3) and the bottom plate (1) are expanded at the maximum angle, the bottom plate (1) and the first side plate (2) are expanded at the minimum angle, and the second movable area is attached to the bottom plate (1);
• the first hinge (5) is a double crease folding structure, and it is defined that the two creases in the double crease are the first crease and the second crease respectively, and the middle area between the two creases is the first movable area, the area outside the first movable area is defined as the outer area, wherein the outer area of the first crease and the second side plate (3) are attached and fixed, and the outer area of the second crease and the first top plate (7) are adhered and firmly connected;
• when the second side plate (3) and the first side plate (2) are folded into a planar structure, the first top plate (7) and the first side plate (2) are expanded to a maximum angle, the first movable area covers the area outside the second crease, and the first movable area is attached to the first top plate (7);
• when the second side plate (3) and the first side plate (2) are expanded at a maximum angle to form a spatial structure configuration, the first top plate (7) and the first side plate (2) are expanded at a minimum angle, and the first movable area is attached to the first top plate (7), and the second side plate (3), the first side plate (2), and the first top plate (7) to form a closed three-sided angle;
• the foldable box further comprises a seam covering and pressing plate (8), a positioning plate (9) and a position-limiting plate (11), the seam covering and pressing plate (8) is folded and connected to the connection between the first top plate (7) and the first lifting plate (10);
• forming the first side panel (2), the first top panel (7), the seam covering and pressing plate (8) and the positioning plate (9) are sequentially folded and connected along the length of the first side panel (2);
• the position-limiting plate (11) is fixedly connected to the surface of the first side plate (2);
• when the second side plate (3) and the first side plate (2) are expanded at a maximum angle and the seam covering and pressing plate (8) cover on the first top plate (7), the first movable area of the first hinge (5) is sandwiched between the first top plate (7) and the seam covering and pressing plate (8);
• defining the state when the seam covering and pressing plate (8) being folded inward and covering the surface of the first hinge (5) is a locked state, when the seam covering and pressing plate (8) is in the locked state, defining a crease where the first connecting edge is located as a third crease, the seam covering and plate (8) and the positioning plate (9) form a fourth crease, and the third crease is attached to the fourth crease;
• the positioning plate (9) is parallel to and attached to the first side plate (2), and is fitted on the inner surface of the first side plate (2), and the positioning plate (9) is clamped between the position-limiting plate (11) and the first top plate (7), and the position-limiting plate (11) locks the position of the positioning plate (9);
• both sides of the inner wall of the second top plate (13) are provided with third hinges (14), and the second top plate (13) is folded through the third hinges (14) on both sides and the third side plate (12) connection.