the subject matter of the present invention is described with specificity herein to meet statutory requirements . however , the description itself is not intended to limit the scope of this patent . rather , the inventors have contemplated that the claimed subject matter might also be embodied in other ways , to include different components , combinations of components , steps , or combinations of steps similar to the ones described in this document , in conjunction with other present or future technologies . referring initially to fig1 , a collapsible storage cabinet 100 is depicted in its fully assembled condition . the collapsible storage cabinet 100 of the present invention can serve a variety of uses . one such use is being in a garage to store tools , supplies or other similar equipment . the collapsible storage cabinet 100 includes a collapsible subassembly 101 having a front wall 102 and an opposing back wall 104 spaced a distance apart when the cabinet is in the fully assembled condition . referring to fig3 , the collapsible storage cabinet 100 is provided with a bracket 105 for hanging the cabinet 100 from a wall , if desired . the bracket 105 would be mounted to the wall and the storage cabinet would be supported thereon by way of a lip 111 along an edge of the bracket 105 interlocking with a corresponding lip 113 extending from the back side of the rear wall 104 . the collapsible storage cabinet 100 also comprises a pair of folding sidewalls 106 extending between and coupling the front wall 102 and back wall 104 , as shown in fig1 and 5 . the folding sidewalls 106 are connected to the front wall 102 and back wall 104 by a hinge 108 ( fig5 and 7 ) or other comparable device . the hinge 108 permits the one or more panels 110 , which form the sidewalls 106 , to collapse as shown in fig2 - 5 . referring now to fig2 , and 5 , the front wall 102 and back wall 104 each comprise additional structural features which aid in the packaging of the storage cabinet 100 in its collapsed condition for shipment and storage . more specifically , the front wall 102 further comprises a pair of extensions 102 a and corresponding first pair of generally planar end faces 112 which extend from the front wall 102 . the back wall 104 , similarly , also has a pair of extensions 104 a and a corresponding second pair of generally planar end faces 114 . the first and second generally planar end faces 112 and 114 are located such that when the storage cabinet 100 is in the fully collapsed state , as shown in fig4 , the first pair of generally planar end faces 112 are positioned adjacent to and parallel with the second pair of generally planar end faces 114 , thereby forming an interior cavity or open region 116 between the front wall 102 , the back wall 104 , and the collapsed sidewalls 106 . as it can be seen in fig4 , when the storage cabinet 100 is in the collapsed condition , the plurality of panels 110 forming the pair of collapsible sidewalls 106 are folded so as to be in contact with each other . furthermore , the plurality of panels 110 are folded so as to also be contained between the front wall 102 and back wall 104 . that is , as can be seen in fig5 and 7 , the plurality of panels 110 which form the collapsible sidewalls 106 are hinged to the extensions 102 a of the front wall 102 and extensions 104 a of the back wall 104 so that the hinges 108 are not visible from the exterior of the collapsible storage cabinet 100 when it is in its fully assembled position . a lip 103 extends beyond an inner edge of one of the panels 110 on each side to prevent the panels 110 from opening or flexing outward . further , in the illustrated embodiment , the hinges 108 are not standard , piano - type hinges in that they do not directly couple interior corners of the extensions 102 a , 104 a to interior corners of the panels 110 , as one would normally think a hinge would do . instead of keeping the corners adjacent to each other throughout the collapsing of the cabinet 100 , the hinges 108 are constructed to move the panels 110 between being aligned with the extensions 102 a , 104 a in the fully assembled position , as best illustrated in fig7 , to being adjacent the extensions 102 a , 104 a in the fully collapsed position , as best illustrated in fig2 . as illustrated in fig2 , the hinges 108 permit each panel to be moved to a location generally perpendicular to and next to or inside of , as opposed to cattycorner or diagonal , the extension to which it is connected . this moves the panels 110 out of the way so the front extensions 102 a almost touch ( or do touch ) the rear extensions 104 a . if the panels 110 were connected to the extensions 102 a , 104 a with piano hinges , the abutting panels 110 would space the extensions 102 a , 104 a further apart , thus making the depth ( i . e ., the vertical dimension in fig2 ) of the collapsed cabinet unit greater . as illustrated in fig2 and 8 , the hinges 108 accomplish this by being attached to an inner face of the extensions 102 a , 104 a and an inner face of the panels 110 . the hinges include an angled bracket portion that spans the space between the panels 110 and the extensions 102 a , 104 a in the fully assembled position . the hinges 108 , as best seen in fig7 and 10 , also include a plurality of openings 115 therein into which a clip 117 may be placed . a clip 117 may be placed in an opening in each of the hinges 108 at a same vertical height and the shelf 150 may be removably supported thereon . the storage cabinet 100 further comprises a front frame 118 , as shown in fig1 , and 5 , with the front frame 118 encompassing one or more doors 120 . as it can be seen from fig1 , 5 , 7 , and 9 , the embodiment of the collapsible storage cabinet 100 depicted has two doors 120 which open outward , thereby providing access to the inside of the storage cabinet 100 . the doors 120 are hinged to a side portion of the front frame 118 in a traditional cabinet - style arrangement . however , the exact number and arrangement of the one or more doors 120 can vary . the one or more doors 120 and front frame 118 also include a locking mechanism 122 permitting the user of the storage cabinet 100 to selectively lock the one or more doors 120 . a key type locking mechanism 122 is utilized in the collapsible storage cabinet 100 shown in fig1 - 5 , and 7 . however , it is possible to utilize other types of locking mechanisms , such as a combination lock . referring now to fig6 , the collapsible storage cabinet 100 also comprises a wall member 130 having a unique structural design . the wall member 130 is preferably used as a top wall 132 and / or a bottom wall 134 for the collapsible storage cabinet 100 , as shown in fig1 , and 9 . the wall member 130 has a generally planar body 136 having a length dimension l and a width dimension w . the wall member 130 also has a pair of first support walls 138 , oriented generally perpendicular to the generally planar body 136 , and a pair of first lips 140 that are parallel to the generally planar body 136 . the wall member 130 also comprises a pair of second support walls 142 , oriented generally perpendicular to the generally planar body 136 , as well as the pair of first support walls 138 . each of the second support walls 142 also comprise a second lip 144 which , like the first lip 140 , is generally parallel to the generally planar body 136 . the first and second lips 140 and 144 each contain one or more openings 146 to aid in securing the top wall 132 and the bottom wall 134 to the collapsible subassembly 101 . the one or more openings 146 correspond to respective openings 148 in top and bottom portions of the front wall 102 , the back wall 104 , and the sidewalls 106 , as shown in fig5 and 7 . the wall member 130 , shown in fig6 , can be fabricated from a single piece of sheet metal that is cut and formed to the desired shape by a bending process such as a press brake . utilizing such a process provides an economical and reliable means of fabrication . more specifically , the wall member 130 has a generally planar body 136 , which is cut and then folded on each of its four sides to form the first support walls 138 and second support walls 142 . then the first and second lips 140 and 144 are formed by bending a portion of the first and second support walls , 138 and 142 , respectively . the one or more openings 146 can be placed in the wall member 130 at a convenient time in the manufacturing process . referring back to fig2 , the storage cabinet 100 shown in its collapsed and packaged condition . the collapsed condition provides a more compact product to be shipped to retailers . more specifically , the storage cabinet , when collapsed , defines an open region 116 , as discussed above . the open region 116 is sized such that the top wall 132 , bottom wall 134 , one or more shelves 150 , and the bracket 105 , along with any fasteners , clips , or other hardware , can be placed within the open region 116 for purposes of packaging and shipping the collapsible storage cabinet 100 . fig2 also shows how the collapsible storage cabinet 100 fits within a limited amount of disposable packaging 107 ( e . g ., cardboard ), which may or may not include multiple layers and / or padding 109 ( e . g ., foam ) so as to protect the collapsible storage cabinet 100 when in transit . the storage cabinet 100 of the present invention provides numerous benefits over cabinets of the prior art , some of which are quick and easy assembly , improved structural support , and enhanced storage features . as shown in fig2 , the collapsible storage cabinet 100 provides a more efficient packaging , thereby using less storage space for shipping and in retail locations . with respect to assembly of the collapsible storage cabinet 100 , once the top wall 132 , bottom wall 134 , and one or more shelves 150 are removed from the packaged unit in fig2 , the collapsible storage cabinet 100 is opened by separating the front wall 102 from the back wall 104 , as shown in fig5 . then , once the folding sidewalls 106 are fully extended , the top wall 132 is secured to the upper portion of the front wall 102 , the back wall 104 and the sidewalls 106 , as shown in fig7 . a plurality of removable fasteners 152 , such as screws or bolts , are placed through the one or more openings 146 in the first and second lips 140 and 144 and into the corresponding openings 148 in the front wall 102 , back wall 104 and sidewalls 106 . the corresponding openings 148 may be threaded such that the removable fasteners 152 engage and secure the top wall 132 to the storage cabinet 100 . it is possible for other types of fasteners 152 to be used such as ¼ turn fasteners or push pin connectors . the bottom wall 134 is secured to the collapsible storage cabinet 100 in the same manner as the top wall 132 . finally , the one or more shelves 150 are placed in the storage cabinet 100 , as shown in fig9 . in the event the storage cabinet 100 is to be collapsed , the one or more shelves 150 are removed , the fasteners 152 are removed , and the top wall 132 and bottom wall 134 are then removed . the storage cabinet 100 can then be collapsed to the flattened condition shown in fig3 and 4 . the design of the top wall 132 and bottom wall 134 also provide increased structural stability for the storage cabinet 100 . referring to fig8 , a partial cross - sectional view of the storage cabinet 100 depicting the top wall 132 is shown . a similar construction occurs with respect to the bottom wall 134 . this cross section view of the storage cabinet 100 shows the generally planar body 136 , first support walls 138 and first lips 140 . the first support walls 138 , which are generally perpendicular to the generally planar body 136 , are thereby generally parallel to the inner portions of the front wall 102 and back wall 104 , providing increased structural rigidity to the collapsible storage cabinet 100 , helping to prevent any twisting or lateral movement of the front wall 102 or back wall 104 , and helping to prevent collapsing of the folding sidewalls 106 . the recessed , tray - like shape of the wall member 130 , provides for a portion of the wall member 130 being between the front wall 102 , the back wall 104 , and the sidewalls 106 when the collapsible storage cabinet 100 is in its fully assembled condition , thereby providing enhanced anti - collapsibility functionality when compared to a flat top or bottom that merely spans across the upper or lower edges of the walls 102 , 104 , 106 . in addition to the structural benefits discussed above , the geometry of the top wall 132 also provides an enhanced feature for the collapsible storage cabinet 100 . that is , the tray - like shape of the top wall 132 allows for additional items , such as small tools or supplies , to be stored on top of the storage cabinet 100 without a risk of them falling or rolling off of the top wall 132 . the collapsible storage cabinet 100 is preferably fabricated from sheet metal such as stainless , galvanized or tool steel . however , for lighter and less rugged applications , it is possible for the collapsible storage cabinet 100 to be fabricated from lighter weight materials , such as plastic . turning now to fig1 - 13 , an alternate method of supporting a shelf in the collapsible storage cabinet 100 is disclosed . to provide increased rigidity to the collapsible storage cabinet 100 when in the fully assembled position , the shelf 150 may be coupled to the hinges 108 , one or more panels 110 , the sidewalls 106 , and / or the back wall 104 . with the use of the clips 117 discussed above , the shelf 150 simply sits on the clips 117 . however , by replacing the openings 115 and clips 117 with a tongue 154 , a more secure connection may be made . as illustrated in fig1 , a tongue 154 may be formed where the opening 115 would otherwise be located . the tongue 154 may be formed by bending a portion of the metal into tongue - like configuration . the tongue 154 defines a space or gap 156 between the tongue 154 and the panel or wall in which it is formed ( e . g ., hinge 108 , sidewall 106 , back wall 104 , etc .). a bottom portion 158 of the shelf 150 is provided with one or more openings 160 . the shelf is placed inside the collapsible storage cabinet 100 when it is in the fully assembled position in a horizontal orientation above the tongues 154 . it is then lowered down toward the tongues , wherein a distal end 162 of the tongues 154 are received in the openings 160 in the bottom of the shelf 150 . the shelf 150 is lowered until a bottom of the shelf 150 abuts the tongue 154 , as illustrated in fig1 . a portion of the shelf 150 is pinched between the tongue 154 and the hinge 108 to , in essence , clamp the shelf 150 in place . this makes the shelf 150 more secure , but also ties the panels 110 together and to the shelf , for a more secure arrangement . the present invention has been described in relation to particular embodiments , which are intended in all respects to be illustrative rather than restrictive . alternative embodiments will become apparent to those of ordinary skill in the art to which the present invention pertains without departing from its scope . from the foregoing , it will be seen that this invention is one well adapted to attain all the ends and objects set forth above , together with other advantages which are obvious and inherent to the system and method . it will be understood that certain features and sub - combinations are of utility and may be employed without reference to other features and sub - combinations . this is contemplated by and within the scope of the claims .
a collapsible storage cabinet having an improved structure and assembly technique is disclosed . the storage cabinet is designed to collapse to a compact size to minimize required shipping and retail space usage , while providing for ease of assembly by a consumer and improved structural design via recessed top and bottom walls . the collapsible storage cabinet includes a collapsible subassembly having a front wall , an opposing back wall , and a pair of folding sidewalls extending between and coupling the front wall and back wall . top and bottom walls are selectively secured to the subassembly to maintain the cabinet in a fully assembled state .