Collapsible container

Abstract

A collapsible container includes a top panel, a bottom panel, two side panels pivotally connected to the top and bottom panels, and a back panel pivotally connected at one lateral edge to a first one of the two side panels. The back panel in a closed position is fitly set in a rear opening of the container to form a support thereat, and a square supporting frame pivotally connected to a front edge of the first side panel may be pivotally turned to a front opening of the container to form a support thereat, so that the whole container has strong structure without the risk of swaying. When the back panel is pivotally turned to bear against an outer side of the first side panel, the whole container could be collapsed to a flat state to occupy only a small space for easy storage and transport.

1 . A collapsible container, comprising a top panel, a bottom panel, two side panels pivotally turnably connected at upper and lower edges to said top panel and said bottom panel, respectively, and a back panel pivotally turnably connected at one lateral edge to a rear edge of a first one of said two side panels; said container being extendable into a standing container by pivotally turning said two side panels about the pivotable upper and lower edges thereof relative to said top panel and said bottom panel; said back panel being pivotally turnable to fitly set in and close a rear opening of said container with four edges of said back panel abutting on rear inner edges of said top panel, said bottom panel, and said two side panels to produce a supporting effect at a rear part of said container; and a square supporting frame formed from slender bars being pivotally connected to a front opening of said container and having dimensions similar to that of an inner periphery of said front opening so as to provide a support at said front opening.  
   
   
       2 . The collapsible container as claimed in  claim 1 , wherein said back panel is provided with a locking element for holding said back panel in place when said back panel has been pivotally turned to close said rear opening of said container.  
   
   
       3 . The collapsible container as claimed in  claim 1 , wherein said top panel, said bottom panel, and said side panels are provided near and along respective rear inner edge with a flange; said flanges serving as stoppers to prevent said back panel from being closed too much into said rear opening of said container.  
   
   
       4 . The collapsible container as claimed in  claim 1 , further comprising a pivot plate pivotally connect at a front edge to said first side panel and at a rear edge to said back panel; said pivot plate allowing said back panel to slightly laterally shift and be fitly set in said rear opening of said container easier.  
   
   
       5 . The collapsible container as claimed in  claim 1 , wherein said square supporting frame has a front vertical bar being partially enclosed in a curved portion formed at a front edge of said first side panel, so that said square supporting frame may be pivotally turned about said front vertical bar to invisibly located at an inner side of said first side panel.  
   
   
       6 . The collapsible container as claimed in  claim 1 , wherein said two side panels are correspondingly provided with at least one row of horizontally extended slots, and at least two slots are contained in each of said rows.  
   
   
       7 . The collapsible container as claimed in  claim 6 , wherein said horizontal slots on said two side panels allow horizontal rails having at least two L-shaped hooks each to separately hang on said slots for slidably supporting at least one drawer thereon.  
   
   
       8 . The collapsible container as claimed in  claim 1 , wherein said top panel and said bottom panel are correspondingly provided near one end of respective inner front edge with two mounting holes, and a door being pivotally turnably mounted to the front opening of said container by extending upper and lower pivot pins provided on said door into said mounting holes, so that said door may be pivotally turned about said upper and lower pivot pins to open or close said container.  
   
   
       9 . The collapsible container as claimed in  claim 8 , wherein each of said upper and lower pivot pins is mounted on a spring leaf, said spring leaf having a fixed end connected to a retaining hook fixedly mounted on said door, and a free end opposite to said fixed end, and said pivot pin being mounted on said free end of said spring leaf to be vertically movable within a predetermined range.