Collapsible storage box

Abstract

A collapsible storage box includes a box body having a containing space that is formed by joining four side retractable assemblies and at least one bottom retractable assembly. Each side retractable assembly includes a first side retractable plate assembly formed by two movable panels slidably sleeved with each other. A side edge of the bottom retractable assembly is hinged with a lower portion of one side retractable assembly. Two opposite side retractable assemblies of the four side retractable assemblies are combined to form a first fold-over unit, and the other two opposite side retractable assemblies are combined to form a second fold-over unit. The storage box is spatially adjustable in size and thus can be folded.

What is claimed is: 
     
         1 . A collapsible storage box, comprising a box body having a containing space that is formed by joining four side retractable assemblies and at least one bottom retractable assembly, wherein each side retractable assembly comprises a first side retractable plate assembly formed by two movable panels slidably sleeved with each other; a side edge of the bottom retractable assembly is hinged with a lower portion of one side retractable assembly; two opposite side retractable assemblies of the four side retractable assemblies are combined to form a first fold-over unit, and the other two opposite side retractable assemblies are combined to form a second fold-over unit; lower portions of the side retractable assemblies within the first fold-over unit are hinged with the bottom retractable assembly; the second fold-over unit further comprises two vertical folding avoidance plates that are respectively disposed below the side retractable assemblies inside the second fold-over unit and configured to avoid thicknesses of the side retractable assemblies of the folded-over first fold-over unit after being folded; lower portions of the vertical folding avoidance plates are fixedly connected to the bottom retractable assembly, and upper portions of the vertical folding avoidance plates are hinged with the lower portions of the side retractable assemblies on the corresponding sides. 
     
     
         2 . The collapsible storage box according to  claim 1 , wherein each side retractable assembly further comprises a second side retractable plate assembly formed by two movable panels slidably sleeved with each other; and the second side retractable plate assembly and the first side retractable plate assembly are slidably sleeved with each other. 
     
     
         3 . The collapsible storage box according to  claim 1 , wherein each bottom retractable assembly is formed by two first bottom retractable plate assemblies sleeved with each other; and the first bottom retractable plate assembly is formed by two movable panels slidably sleeved with each other. 
     
     
         4 . The collapsible storage box according to  claim 1 , wherein each bottom retractable assembly is formed by two second bottom retractable plate assemblies and a first bottom corrugated connecting retractable assembly connected between the two second bottom retractable plate assemblies; the second bottom retractable plate assembly is formed by two movable panels slidably sleeved with each other; the first bottom corrugated connecting retractable assembly is formed by a first bottom corrugated retractable plate and a second bottom corrugated retractable plate slidably sleeved with each other; respective extension-retraction directions of the first bottom corrugated retractable plate and the second bottom corrugated retractable plate are perpendicular to a sliding direction of the first bottom corrugated retractable plate relative to the second bottom corrugated retractable plate; and an extension-retraction direction of the second bottom retractable plate assembly is identical to the sliding direction of the first bottom corrugated retractable plate relative to the second bottom corrugated retractable plate. 
     
     
         5 . The collapsible storage box according to  claim 1 , wherein each bottom retractable assembly is formed by two bottom retractable subassemblies and a second bottom corrugated connecting retractable assembly disposed between the two bottom retractable subassemblies; each bottom retractable subassembly comprises two first bottom base plates disposed symmetrically and a third bottom corrugated retractable plate connected between the two first bottom base plates; the second bottom corrugated connecting retractable assembly is formed by a fourth bottom corrugated retractable plate and a fifth bottom corrugated retractable plate slidably sleeved with each other; two side edges of each of the fourth bottom corrugated retractable plate and the fifth bottom corrugated retractable plate are connected to side edges of the corresponding first bottom base plates, respectively; and respective extension-retraction directions of the fourth bottom corrugated retractable plate and the fifth bottom corrugated retractable plate are perpendicular to a sliding direction of the fourth bottom corrugated retractable plate relative to the fifth bottom corrugated retractable plate. 
     
     
         6 . The collapsible storage box according to  claim 1 , wherein each bottom retractable assembly is formed by a sixth bottom corrugated retractable plate and a seventh bottom corrugated retractable plate slidably sleeved with each other; and respective extension-retraction directions of the sixth bottom corrugated retractable plate and the seventh bottom corrugated retractable plate are perpendicular to a sliding direction of the sixth bottom corrugated retractable plate relative to the seventh bottom corrugated retractable plate. 
     
     
         7 . The collapsible storage box according to  claim 1 , wherein each bottom retractable assembly is formed by four second bottom base plates; and one side edge of each second bottom base plate is connected to a bottom of the side retractable assembly at a corresponding position in a flipping manner. 
     
     
         8 . The collapsible storage box according to  claim 1 , wherein a hinge assembly is further disposed at any position between adjacent two side retractable assemblies, between the lower portion of the side retractable assembly and the bottom retractable assembly, and between the upper portion of the vertical folding avoidance plate and the lower portion of the side retractable assembly on the corresponding side; the hinge assembly comprises a first outer rotating plate, a second outer rotating plate, an arc-shaped elastic connector, a first inner rotating plate, and a second inner rotating plate; two open ends of the arc-shaped elastic connector are integrally connected to the first outer rotating plate and the second outer rotating plate, respectively; the first inner rotating plate is hinged with the second inner rotating plate; the first inner rotating plate is correspondingly disposed on an inner side of the first outer rotating plate; a first slide rail is disposed on one side and between the first inner rotating plate and the first outer rotating plate, and a first slider matched with the first slide rail is disposed on the other side; an extension direction of the first slide rail is perpendicular to a rotation direction of the first inner rotating plate; the second inner rotating plate is correspondingly disposed on an inner side of the second outer rotating plate; a second slide rail is disposed on one side and between the second inner rotating plate and the second outer rotating plate, and a second slider matched with the second slide rail is disposed on the other side; and an extension direction of the second slide rail is perpendicular to a rotation direction of the second inner rotating plate. 
     
     
         9 . A collapsible storage box, comprising a box body having a containing space that is formed by joining four side retractable assemblies and at least one bottom retractable assembly, wherein each side retractable assembly comprises a first side retractable plate assembly formed by two movable panels slidably sleeved with each other; two opposite side retractable assemblies of the four side retractable assemblies are combined to form a flipping unit, and the other two opposite side retractable assemblies are combined to form an infolding unit; the flipping unit further comprises a flipping cross beam disposed above the side retractable assembly, and an upper portion of the side retractable assembly is rotatably connected to the flipping cross beam; two ends of the flipping cross beam are fixedly connected to the side retractable assemblies on the two corresponding sides within the infolding unit; each of the side retractable assemblies within the infolding unit is formed by an upper infolding subunit and a lower infolding subunit with an upper portion hinged with the upper infolding subunit; and a lower portion of the lower infolding subunit  2  hinged with the bottom retractable assembly. 
     
     
         10 . The collapsible storage box according to  claim 9 , wherein each side retractable assembly further comprises a second side retractable plate assembly formed by two movable panels slidably sleeved with each other; and the second side retractable plate assembly and the first side retractable plate assembly are slidably sleeved with each other. 
     
     
         11 . The collapsible storage box according to  claim 9 , wherein each bottom retractable assembly is formed by two first bottom retractable plate assemblies sleeved with each other; and the first bottom retractable plate assembly is formed by two movable panels slidably sleeved with each other. 
     
     
         12 . The collapsible storage box according to  claim 9 , wherein each bottom retractable assembly is formed by two second bottom retractable plate assemblies and a first bottom corrugated connecting retractable assembly disposed between the two second bottom retractable plate assemblies; the second bottom retractable plate assembly is formed by two movable panels slidably sleeved with each other; the first bottom corrugated connecting retractable assembly is formed by a first bottom corrugated retractable plate and a second bottom corrugated retractable plate slidably sleeved with each other; respective extension-retraction directions of the first bottom corrugated retractable plate and the second bottom corrugated retractable plate are perpendicular to a sliding direction of the first bottom corrugated retractable plate relative to the second bottom corrugated retractable plate; and an extension-retraction direction of the second bottom retractable plate assembly is identical to the sliding direction of the first bottom corrugated retractable plate relative to the second bottom corrugated retractable plate. 
     
     
         13 . The collapsible storage box according to  claim 9 , wherein each bottom retractable assembly is formed by two bottom retractable subassemblies and a second bottom corrugated connecting retractable assembly disposed between the two bottom retractable subassemblies; each bottom retractable subassembly comprises two first bottom base plates disposed symmetrically and a third bottom corrugated retractable plate connected between the two first bottom base plates; the second bottom corrugated connecting retractable assembly is formed by a fourth bottom corrugated retractable plate and a fifth bottom corrugated retractable plate slidably sleeved with each other; two side edges of each of the fourth bottom corrugated retractable plate and the fifth bottom corrugated retractable plate are connected to side edges of the corresponding first bottom base plates, respectively; and respective extension-retraction directions of the fourth bottom corrugated retractable plate and the fifth bottom corrugated retractable plate are perpendicular to a sliding direction of the fourth bottom corrugated retractable plate relative to the fifth bottom corrugated retractable plate. 
     
     
         14 . The collapsible storage box according to  claim 9 , wherein each bottom retractable assembly is formed by a sixth bottom corrugated retractable plate and a seventh bottom corrugated retractable plate slidably sleeved with each other; and respective extension-retraction directions of the sixth bottom corrugated retractable plate and the seventh bottom corrugated retractable plate are perpendicular to a sliding direction of the sixth bottom corrugated retractable plate relative to the seventh bottom corrugated retractable plate. 
     
     
         15 . The collapsible storage box according to  claim 9 , wherein each bottom retractable assembly is formed by four second bottom base plates; and one side edge of each second bottom base plate is connected to a bottom of the side retractable assembly at a corresponding position in a flipping manner. 
     
     
         16 . The collapsible storage box according to  claim 9 , wherein a side edge of the bottom retractable assembly is hinged with a lower portion of one side retractable assembly through a hinge assembly; the hinge assembly comprises a first outer rotating plate, a second outer rotating plate, an arc-shaped elastic connector, a first inner rotating plate, and a second inner rotating plate; two open ends of the arc-shaped elastic connector are integrally connected to the first outer rotating plate and the second outer rotating plate, respectively; the first inner rotating plate is hinged with the second inner rotating plate; the first inner rotating plate is correspondingly disposed on an inner side of the first outer rotating plate; a first slide rail is disposed on one side and between the first inner rotating plate and the first outer rotating plate, and a first slider matched with the first slide rail is disposed on the other side; an extension direction of the first slide rail is perpendicular to a rotation direction of the first inner rotating plate; the second inner rotating plate is correspondingly disposed on an inner side of the second outer rotating plate; a second slide rail is disposed on one side and between the second inner rotating plate and the second outer rotating plate, and a second slider matched with the second slide rail is disposed on the other side; and an extension direction of the second slide rail is perpendicular to a rotation direction of the second inner rotating plate. 
     
     
         17 . A collapsible storage box, comprising a box body having a containing space that is formed by joining four side retractable assemblies and at least one bottom retractable assembly, wherein each side retractable assembly comprises a first side retractable plate assembly formed by two movable panels slidably sleeved with each other; a side edge of the bottom retractable assembly is hinged with a lower portion of one side retractable assembly; or the bottom retractable assembly is formed by joining two pieces; two opposite side edges of the bottom retractable assembly are hinged with lower portions of two corresponding side retractable assemblies; adjacent two side retractable assemblies of the four side retractable assemblies are combined in pair to form two folding units; a transverse folding avoidance plate configured to avoid thicknesses of the side retractable assemblies after being folded is disposed between the two side retractable assemblies inside each folding unit; and one side edge of the transverse folding avoidance plate is fixedly connected to one side retractable assembly, while the other side edge is hinged with the other side retractable assembly. 
     
     
         18 . The collapsible storage box according to  claim 17 , wherein each side retractable assembly further comprises a second side retractable plate assembly formed by two movable panels slidably sleeved with each other; and the second side retractable plate assembly and the first side retractable plate assembly are slidably sleeved with each other. 
     
     
         19 . The collapsible storage box according to  claim 17 , wherein each bottom retractable assembly is formed by two first bottom retractable plate assemblies sleeved with each other; and the first bottom retractable plate assembly is formed by two movable panels slidably sleeved with each other. 
     
     
         20 . The collapsible storage box according to  claim 17 , wherein each bottom retractable assembly is formed by two second bottom retractable plate assemblies and a first bottom corrugated connecting retractable assembly disposed between the two second bottom retractable plate assemblies; the second bottom retractable plate assembly is formed by two movable panels slidably sleeved with each other; the first bottom corrugated connecting retractable assembly is formed by a first bottom corrugated retractable plate and a second bottom corrugated retractable plate slidably sleeved with each other; respective extension-retraction directions of the first bottom corrugated retractable plate and the second bottom corrugated retractable plate are perpendicular to a sliding direction of the first bottom corrugated retractable plate relative to the second bottom corrugated retractable plate; and an extension-retraction direction of the second bottom retractable plate assembly is identical to the sliding direction of the first bottom corrugated retractable plate relative to the second bottom corrugated retractable plate. 
     
     
         21 . The collapsible storage box according to  claim 17 , wherein each bottom retractable assembly is formed by two bottom retractable subassemblies and a second bottom corrugated connecting retractable assembly disposed between the two bottom retractable subassemblies; each bottom retractable subassembly comprises two first bottom base plates disposed symmetrically and a third bottom corrugated retractable plate connected between the two first bottom base plates; the second bottom corrugated connecting retractable assembly is formed by a fourth bottom corrugated retractable plate and a fifth bottom corrugated retractable plate slidably sleeved with each other; two side edges of each of the fourth bottom corrugated retractable plate and the fifth bottom corrugated retractable plate are connected to side edges of the corresponding first bottom base plates, respectively; and respective extension-retraction directions of the fourth bottom corrugated retractable plate and the fifth bottom corrugated retractable plate are perpendicular to a sliding direction of the fourth bottom corrugated retractable plate relative to the fifth bottom corrugated retractable plate. 
     
     
         22 . The collapsible storage box according to  claim 17 , wherein each bottom retractable assembly is formed by a sixth bottom corrugated retractable plate and a seventh bottom corrugated retractable plate slidably sleeved with each other; and respective extension-retraction directions of the sixth bottom corrugated retractable plate and the seventh bottom corrugated retractable plate are perpendicular to a sliding direction of the sixth bottom corrugated retractable plate relative to the seventh bottom corrugated retractable plate. 
     
     
         23 . The collapsible storage box according to  claim 17 , wherein each bottom retractable assembly is formed by four second bottom base plates; and one side edge of each second bottom base plate is connected to a bottom of the side retractable assembly at a corresponding position in a flipping manner. 
     
     
         24 . The collapsible storage box according to  claim 17 , wherein a side edge of the bottom retractable assembly is hinged with a lower portion of one side retractable assembly through a hinge assembly; the hinge assembly comprises a first outer rotating plate, a second outer rotating plate, an arc-shaped elastic connector, a first inner rotating plate, and a second inner rotating plate; two open ends of the arc-shaped elastic connector are integrally connected to the first outer rotating plate and the second outer rotating plate, respectively; the first inner rotating plate is hinged with the second inner rotating plate; the first inner rotating plate is correspondingly disposed on an inner side of the first outer rotating plate; a first slide rail is disposed on one side and between the first inner rotating plate and the first outer rotating plate, and a first slider matched with the first slide rail is disposed on the other side; an extension direction of the first slide rail is perpendicular to a rotation direction of the first inner rotating plate; the second inner rotating plate is correspondingly disposed on an inner side of the second outer rotating plate; a second slide rail is disposed on one side and between the second inner rotating plate and the second outer rotating plate, and a second slider matched with the second slide rail is disposed on the other side; and an extension direction of the second slide rail is perpendicular to a rotation direction of the second inner rotating plate. 
     
     
         25 . The collapsible storage box according to  claim 2 , wherein each bottom retractable assembly is formed by two first bottom retractable plate assemblies sleeved with each other; and the first bottom retractable plate assembly is formed by two movable panels slidably sleeved with each other. 
     
     
         26 . The collapsible storage box according to  claim 2 , wherein each bottom retractable assembly is formed by two second bottom retractable plate assemblies and a first bottom corrugated connecting retractable assembly connected between the two second bottom retractable plate assemblies; the second bottom retractable plate assembly is formed by two movable panels slidably sleeved with each other; the first bottom corrugated connecting retractable assembly is formed by a first bottom corrugated retractable plate and a second bottom corrugated retractable plate slidably sleeved with each other; respective extension-retraction directions of the first bottom corrugated retractable plate and the second bottom corrugated retractable plate are perpendicular to a sliding direction of the first bottom corrugated retractable plate relative to the second bottom corrugated retractable plate; and an extension-retraction direction of the second bottom retractable plate assembly is identical to the sliding direction of the first bottom corrugated retractable plate relative to the second bottom corrugated retractable plate. 
     
     
         27 . The collapsible storage box according to  claim 2 , wherein each bottom retractable assembly is formed by two bottom retractable subassemblies and a second bottom corrugated connecting retractable assembly disposed between the two bottom retractable subassemblies; each bottom retractable subassembly comprises two first bottom base plates disposed symmetrically and a third bottom corrugated retractable plate connected between the two first bottom base plates; the second bottom corrugated connecting retractable assembly is formed by a fourth bottom corrugated retractable plate and a fifth bottom corrugated retractable plate slidably sleeved with each other; two side edges of each of the fourth bottom corrugated retractable plate and the fifth bottom corrugated retractable plate are connected to side edges of the corresponding first bottom base plates, respectively; and respective extension-retraction directions of the fourth bottom corrugated retractable plate and the fifth bottom corrugated retractable plate are perpendicular to a sliding direction of the fourth bottom corrugated retractable plate relative to the fifth bottom corrugated retractable plate. 
     
     
         28 . The collapsible storage box according to  claim 2 , wherein each bottom retractable assembly is formed by a sixth bottom corrugated retractable plate and a seventh bottom corrugated retractable plate slidably sleeved with each other; and respective extension-retraction directions of the sixth bottom corrugated retractable plate and the seventh bottom corrugated retractable plate are perpendicular to a sliding direction of the sixth bottom corrugated retractable plate relative to the seventh bottom corrugated retractable plate. 
     
     
         29 . The collapsible storage box according to  claim 2 , wherein each bottom retractable assembly is formed by four second bottom base plates; and one side edge of each second bottom base plate is connected to a bottom of the side retractable assembly at a corresponding position in a flipping manner. 
     
     
         30 . The collapsible storage box according to  claim 2 , wherein a hinge assembly is further disposed at any position between adjacent two side retractable assemblies, between the lower portion of the side retractable assembly and the bottom retractable assembly, and between the upper portion of the vertical folding avoidance plate and the lower portion of the side retractable assembly on the corresponding side; the hinge assembly comprises a first outer rotating plate, a second outer rotating plate, an arc-shaped elastic connector, a first inner rotating plate, and a second inner rotating plate; two open ends of the arc-shaped elastic connector are integrally connected to the first outer rotating plate and the second outer rotating plate, respectively; the first inner rotating plate is hinged with the second inner rotating plate; the first inner rotating plate is correspondingly disposed on an inner side of the first outer rotating plate; a first slide rail is disposed on one side and between the first inner rotating plate and the first outer rotating plate, and a first slider matched with the first slide rail is disposed on the other side; an extension direction of the first slide rail is perpendicular to a rotation direction of the first inner rotating plate; the second inner rotating plate is correspondingly disposed on an inner side of the second outer rotating plate; a second slide rail is disposed on one side and between the second inner rotating plate and the second outer rotating plate, and a second slider matched with the second slide rail is disposed on the other side; and an extension direction of the second slide rail is perpendicular to a rotation direction of the second inner rotating plate. 
     
     
         31 . The collapsible storage box according to  claim 10 , wherein each bottom retractable assembly is formed by two first bottom retractable plate assemblies sleeved with each other; and the first bottom retractable plate assembly is formed by two movable panels slidably sleeved with each other. 
     
     
         32 . The collapsible storage box according to  claim 10 , wherein each bottom retractable assembly is formed by two second bottom retractable plate assemblies and a first bottom corrugated connecting retractable assembly disposed between the two second bottom retractable plate assemblies; the second bottom retractable plate assembly is formed by two movable panels slidably sleeved with each other; the first bottom corrugated connecting retractable assembly is formed by a first bottom corrugated retractable plate and a second bottom corrugated retractable plate slidably sleeved with each other; respective extension-retraction directions of the first bottom corrugated retractable plate and the second bottom corrugated retractable plate are perpendicular to a sliding direction of the first bottom corrugated retractable plate relative to the second bottom corrugated retractable plate; and an extension-retraction direction of the second bottom retractable plate assembly is identical to the sliding direction of the first bottom corrugated retractable plate relative to the second bottom corrugated retractable plate. 
     
     
         33 . The collapsible storage box according to  claim 10 , wherein each bottom retractable assembly is formed by two bottom retractable subassemblies and a second bottom corrugated connecting retractable assembly disposed between the two bottom retractable subassemblies; each bottom retractable subassembly comprises two first bottom base plates disposed symmetrically and a third bottom corrugated retractable plate connected between the two first bottom base plates; the second bottom corrugated connecting retractable assembly is formed by a fourth bottom corrugated retractable plate and a fifth bottom corrugated retractable plate slidably sleeved with each other; two side edges of each of the fourth bottom corrugated retractable plate and the fifth bottom corrugated retractable plate are connected to side edges of the corresponding first bottom base plates, respectively; and respective extension-retraction directions of the fourth bottom corrugated retractable plate and the fifth bottom corrugated retractable plate are perpendicular to a sliding direction of the fourth bottom corrugated retractable plate relative to the fifth bottom corrugated retractable plate. 
     
     
         34 . The collapsible storage box according to  claim 10 , wherein each bottom retractable assembly is formed by a sixth bottom corrugated retractable plate and a seventh bottom corrugated retractable plate slidably sleeved with each other; and respective extension-retraction directions of the sixth bottom corrugated retractable plate and the seventh bottom corrugated retractable plate are perpendicular to a sliding direction of the sixth bottom corrugated retractable plate relative to the seventh bottom corrugated retractable plate. 
     
     
         35 . The collapsible storage box according to  claim 10 , wherein each bottom retractable assembly is formed by four second bottom base plates; and one side edge of each second bottom base plate is connected to a bottom of the side retractable assembly at a corresponding position in a flipping manner. 
     
     
         36 . The collapsible storage box according to  claim 10 , wherein a side edge of the bottom retractable assembly is hinged with a lower portion of one side retractable assembly through a hinge assembly; the hinge assembly comprises a first outer rotating plate, a second outer rotating plate, an arc-shaped elastic connector, a first inner rotating plate, and a second inner rotating plate; two open ends of the arc-shaped elastic connector are integrally connected to the first outer rotating plate and the second outer rotating plate, respectively; the first inner rotating plate is hinged with the second inner rotating plate; the first inner rotating plate is correspondingly disposed on an inner side of the first outer rotating plate; a first slide rail is disposed on one side and between the first inner rotating plate and the first outer rotating plate, and a first slider matched with the first slide rail is disposed on the other side; an extension direction of the first slide rail is perpendicular to a rotation direction of the first inner rotating plate; the second inner rotating plate is correspondingly disposed on an inner side of the second outer rotating plate; a second slide rail is disposed on one side and between the second inner rotating plate and the second outer rotating plate, and a second slider matched with the second slide rail is disposed on the other side; and an extension direction of the second slide rail is perpendicular to a rotation direction of the second inner rotating plate. 
     
     
         37 . The collapsible storage box according to  claim 18 , wherein each bottom retractable assembly is formed by two first bottom retractable plate assemblies sleeved with each other; and the first bottom retractable plate assembly is formed by two movable panels slidably sleeved with each other. 
     
     
         38 . The collapsible storage box according to  claim 18 , wherein each bottom retractable assembly is formed by two second bottom retractable plate assemblies and a first bottom corrugated connecting retractable assembly disposed between the two second bottom retractable plate assemblies; the second bottom retractable plate assembly is formed by two movable panels slidably sleeved with each other; the first bottom corrugated connecting retractable assembly is formed by a first bottom corrugated retractable plate and a second bottom corrugated retractable plate slidably sleeved with each other; respective extension-retraction directions of the first bottom corrugated retractable plate and the second bottom corrugated retractable plate are perpendicular to a sliding direction of the first bottom corrugated retractable plate relative to the second bottom corrugated retractable plate; and an extension-retraction direction of the second bottom retractable plate assembly is identical to the sliding direction of the first bottom corrugated retractable plate relative to the second bottom corrugated retractable plate. 
     
     
         39 . The collapsible storage box according to  claim 18 , wherein each bottom retractable assembly is formed by two bottom retractable subassemblies and a second bottom corrugated connecting retractable assembly disposed between the two bottom retractable subassemblies; each bottom retractable subassembly comprises two first bottom base plates disposed symmetrically and a third bottom corrugated retractable plate connected between the two first bottom base plates; the second bottom corrugated connecting retractable assembly is formed by a fourth bottom corrugated retractable plate and a fifth bottom corrugated retractable plate slidably sleeved with each other; two side edges of each of the fourth bottom corrugated retractable plate and the fifth bottom corrugated retractable plate are connected to side edges of the corresponding first bottom base plates, respectively; and respective extension-retraction directions of the fourth bottom corrugated retractable plate and the fifth bottom corrugated retractable plate are perpendicular to a sliding direction of the fourth bottom corrugated retractable plate relative to the fifth bottom corrugated retractable plate. 
     
     
         40 . The collapsible storage box according to  claim 18 , wherein each bottom retractable assembly is formed by a sixth bottom corrugated retractable plate and a seventh bottom corrugated retractable plate slidably sleeved with each other; and respective extension-retraction directions of the sixth bottom corrugated retractable plate and the seventh bottom corrugated retractable plate are perpendicular to a sliding direction of the sixth bottom corrugated retractable plate relative to the seventh bottom corrugated retractable plate. 
     
     
         41 . The collapsible storage box according to  claim 18 , wherein each bottom retractable assembly is formed by four second bottom base plates; and one side edge of each second bottom base plate is connected to a bottom of the side retractable assembly at a corresponding position in a flipping manner. 
     
     
         42 . The collapsible storage box according to  claim 18 , wherein a side edge of the bottom retractable assembly is hinged with a lower portion of one side retractable assembly through a hinge assembly; the hinge assembly comprises a first outer rotating plate, a second outer rotating plate, an arc-shaped elastic connector, a first inner rotating plate, and a second inner rotating plate; two open ends of the arc-shaped elastic connector are integrally connected to the first outer rotating plate and the second outer rotating plate, respectively; the first inner rotating plate is hinged with the second inner rotating plate; the first inner rotating plate is correspondingly disposed on an inner side of the first outer rotating plate; a first slide rail is disposed on one side and between the first inner rotating plate and the first outer rotating plate, and a first slider matched with the first slide rail is disposed on the other side; an extension direction of the first slide rail is perpendicular to a rotation direction of the first inner rotating plate; the second inner rotating plate is correspondingly disposed on an inner side of the second outer rotating plate; a second slide rail is disposed on one side and between the second inner rotating plate and the second outer rotating plate, and a second slider matched with the second slide rail is disposed on the other side; and an extension direction of the second slide rail is perpendicular to a rotation direction of the second inner rotating plate.