The present invention relates to a collapsible container for use in an aircraft cargo hold.
Special containers are used on aircraft for storing fragile parcels containing breakable or perishable goods, or for storing passenger luggage. Due to the limited space available in aircraft cargo holds, the shape of such a container is generally designed to fit the shape of the walls of the aircraft cargo hold or luggage compartment. One of the most important factors airlines use in selecting a suitable container for use in an aircraft cargo hold is gross weight. The heavier the container, the heavier the airplane and the more fuel that must be used to fly a predetermined distance.
In order to reduce the space occupied by such a container once it has been emptied, such a container has been designed to collapse. For example, U.S. Pat. No. 5,890,612 discloses a collapsible aircraft container which has a rigid base frame supporting an accordion folding frame. The collapsible container has sides made of canvas and sheet metal plates. The frames are made of steel. Therefore, the container is heavy, even when empty.
Another collapsible aircraft container is disclosed in U.S. Pat. No. 5,941,405. This collapsible aircraft container has a base, support posts and roof made of aluminum and flexible side walls formed from light weight fabric. Again, due to the support posts, the container is heavy, even when empty.
In each of these collapsible aircraft containers, the less the weight the better, as long as the container is sturdy enough to handle normal wear and tear of such use. Consequently, there is a need for a light weight, collapsible airline container which does not include a frame or support posts, thereby reducing its weight.
The present invention is a collapsible cargo container which is configurable into an erected condition and a collapsed condition. The container comprises a base, a pair of opposed side walls hinged to the base, a top hinged to the side walls, a front wall hinged to the base, a back wall hinged to the base, flaps hinged to the side walls and top, and a door formed in one of the walls. Fasteners secure the flaps to the front and back walls when the container is in the erected condition. The front and back walls are collapsible upon the base and the side walls and top are collapsible upon the front and back walls when the container is in the collapsed condition.
The base, top, side walls, front wall, and back wall can be plastic. The fasteners can be rotatable latches. Each of the rotatable latches can be attached to the flaps, and the front and back walls can be provided with openings for receiving the rotatable latches. Each of the side walls can have an upper side wall panel hinged to a lower side wall panel. Each of the upper side wall panels can be hinged to form an upper portion and a lower portion, such that when the container is collapsed, the upper portion of the upper side wall panel overlies the lower portion of the upper side wall panel. The upper side wall panels can be angled inwardly relative to the lower side wall panels. The back wall can have an upper portion hinged to a lower portion, such that when the container is collapsed, the upper portion of the back wall overlies the lower portion of the back wall. The upper portion of the back wall can angle forwardly relative to the lower portion of the back wall. The door can be lockable in a closed position. The base, side walls, and top can be hinged together via living hinges. The base, side walls, and top can be integrally formed as a single, one-piece, seamless structure. The front and back walls can be hinged to the base via extruded hinges. The flaps that are secured to the front wall with fasteners can be hinged to the side walls and top via living hinges. The flaps that are secured to the back wall with fasteners and that are hinged to the upper side wall panels and hinged to the top are hinged thereto with extruded hinges, and the flaps that are secured to the back wall with fasteners and that are hinged to the lower side wall panels are hinged thereto with living hinges. The door can be formed in the front wall.
In another aspect, the present invention is a method of erecting a collapsed cargo container. The method comprises the steps of providing a collapsed cargo container having a base, a pair of opposed side walls hinged to the base, a top hinged to the side walls, a front wall hinged to the base, a back wall hinged to the base, flaps hinged to the side walls and top, and a door formed in one of the walls, lifting the top and side walls of the container to thereby erect the side walls of the container, lifting the front wall of the container to pivot the front wall of the container forwardly relative to the base of the container, fastening flaps on the side walls and top to the front wall with fasteners, lifting the back wall of the container to pivot the back wall of the container rearwardly relative to the base of container, and fastening flaps on the side walls and top to the back wall with fasteners.
The fasteners can be rotatable latches attached to the flaps, and the method can further comprise the steps of providing openings in the front and back walls, passing the rotatable latches through the openings, and rotating the latches.
In yet another aspect, a collapsible cargo container is provided which is configurable into an erected condition and a collapsed condition which comprises a base, a pair of opposed side walls hinged to the base, a top hinged to the side walls, a front wall hinged to the base, a back wall hinged to the base, flaps hinged to the side walls and top, and a door formed in one of the walls. Fasteners secure the flaps to the front and back walls when the container is in the erected condition. The side walls, top, front wall, and back wall are collapsible so as to be substantially parallel to, and generally in close proximity to, the base when the container is in the collapsed condition.
In still another aspect, a method of erecting a collapsed cargo container comprises the steps of providing a collapsed cargo container having a base, a pair of opposed side walls hinged to the base, a top hinged to the side walls, a front wall hinged to the base, a back wall hinged to the base, flaps hinged to the side walls and top, and a door formed in one of the walls, the side walls, top, front wall, and back wall being collapsed so as to be substantially parallel to, and generally in close proximity to, the base, and, in no particular order, lifting the top and side walls of the container to thereby erect the side walls of the container, lifting the front wall of the container to pivot the front wall of the container forwardly relative to the base of the container, fastening flaps on the side walls and top to the front wall with fasteners, lifting the back wall of the container to pivot the back wall of the container rearwardly relative to the base of container, and fastening flaps on the side walls and top to the back wall with fasteners.
Referring to
The container 10 comprises a base 12 (
The base 12, side walls 14, 14, top 16, front wall 18, and back wall 20 are preferably made of a honeycomb plastic material. For example, one such suitable plastic material from which to construct the container 10 is sold under the trademark CON-PEARL® by Friedola Gebr. Holzapfel Gmbh & Co., Germany. However, other materials or other configurations may be used without departing from the present invention.
More particularly, the base 12, side walls 14, 14, and top 16 can be hinged together via living hinges 50, i.e hinges formed by creasing, scoring, or folding the material forming the base 12, side walls 14, 14, and top 16. To increase the stiffness and structural integrity of the container 10, base 12, side walls 14, 14 and top 16 can be formed as a single, integral, one-piece, seamless structure. In other words, rather than joining separate panels of material together via extrusions or the like to form the container, one or more separate panels of material can be thermally butt welded via “hand seaming.” For example, if the base 12, side walls 14, 14, and top 16 were stamped out, laser-cut for die-cut as a single sheet or blank, then only a single such butt weld would be required; if out of two sheets or blanks, then two such butt welds would be required; if out of three sheets or blanks, then three such butt welds would be required, and etc. The number of sheets or blanks required to form the base 12, side walls 14, 14, and top 16 of the container 10 is dictated by the forming machinery and its capabilities. In any event, the resulting integrally formed structure is a single, one-piece, seamless structure, and as such, exhibits superior structural integrity characteristics over a structure formed from separate panels secured together with extrusions.
Further, each side wall 14 can have an upper side wall panel 60 hinged to a lower side wall panel 62. The upper side wall panel 60 can angle inwardly relative to the lower side wall panel 62 to provide a side profile of container 10 which mates with or otherwise matches the geometry of the cargo hold of the air craft in which the container 10 is to be used. The upper side wall panel 60 can be hinged as at 64 (living hinge) to form an upper portion 66 and a lower portion 68. When the container 10 is collapsed (
If the forming machinery is capable, the front wall 18 and the back wall 20 can likewise be hinged to the base 12 with living hinges, i.e. the base 12, side walls 14, 14, top 16, front wall 18, and back wall 20 can be stamped out, laser-cut or die-cut as a single sheet or blank. If the forming machinery is not so capable, then the front wall 18 and rear wall 20 can be hinged to the base 12 with extruded plastic hinges 70, 72, respectively. As shown in
Again, if the forming machinery is capable, the front flaps 22, 24, and 26 can be stamped out, laser-cut or die-cut integral with the sheet or blank of material from which the container 10 is constructed. In that case, the flaps 22, 24, and 26 can be hinged to the lower side wall panels 62, upper side wall panels 60, and top 16, respectively with living hinges 80. The same approach can be taken with the back flaps 28, 30, 32, again with the forming machinery permitting. If the forming machinery does not permit the back flaps to be stamped out, laser-cut or die-cut integral with the sheet or blank of material from which the container 10 is constructed, one or-more of the flaps can be hinged to the side walls 14, 14 and/or top 16 with extruded plastic hinges of the type discussed above. As illustrated, flaps 28 are hinged to lower side wall panels 62 with living hinges 82, whereas flaps 30 and 32 are hinged to the upper side wall panels 60 and top 16 with extruded plastic hinges 84, 86, respectively.
Referring to
As shown in the
Referring now to
As shown in
As shown in
The assembler 94a next turns his attention to the back wall 20. Assembler 94b steps around to the back of the container 10. Assembler 94a raises the upper and lower portions 90, 92 of the back wall 20 upwardly, pivoting the back wall 20 rearwardly relative to the base 12. Once he is able to reach it, assembler 94b grasps the upper portion 90 of the back wall 20 and raises it upwardly and forwardly, thereby pivoting the upper portion 90 forwardly relative to the lower portion 92. Once back wall 20 is completely erected, the assembler 94b folds the flaps 28, 30, 32 against the back wall 20 causing the rotatable portions 40 of the latches 36 to pass through openings 42 in back wall 20 as shown in
After the container 10 is fully assembled, the door 34 may be closed and locked, if necessary, after products or items 96 are loaded inside the interior 98 of the container 10. See
To collapse the erected container 10, the above steps are performed in reverse. The resulting collapsed container 10, as shown in
The embodiments of the invention shown and described are for illustrative purposes only. The drawings and the description shall not limit in any way the scope of the invention as defined in the claims. While those skilled in the art may make various changes to, or additional embodiments of, the invention, none of those changes/embodiments shall be deemed to depart from the spirit of the invention. Thus, all such changes/embodiments shall be embraced by the scope of the invention as defined in the claims.
For example, the claims are not limited to the illustrated order of collapsing (and erecting) the side walls, top, and front and back walls. Any other order of collapsing (and erecting) the container shall be within the scope of the claims. In other words, the order of collapsing (and erecting) the top and side walls, and the front and back walls, can be reversed. That is to say, the front and back walls can be collapsed first upon the base, and then the top and side walls can be collapsed onto the front and back walls. And, the order of collapsing (and erecting) the front and back walls can be reversed. That is to say, the front wall can be collapsed first upon the base, and then the back wall can be collapsed upon the front wall. And, the order of collapsing (and erecting) the top and side walls can be reversed. That is to say, the top can be collapsed first upon the base, and then the side walls can be collapsed upon the top.
Furthermore, an alternating order of collapsing (and erecting) can be employed. That is to say, the front wall can be collapsed first, the top and side walls can be collapsed second, and the back wall can be collapsed third. Or, the back wall can be collapsed first, the top and side walls can be collapsed second, and the front wall can be collapsed third. And, within such an alternating order of collapsing (and erecting) the container, the order of collapsing the top and side walls can be reversed. All of these combinations and permutations of collapsing the container result in a collapsed container wherein the side walls, top, front wall, and back wall are substantially parallel to, and generally in close proximity to, the base, and accordingly, any and all combinations and permutations of collapsing the elements of the collapsible container of this invention are within the scope of the claims.
Accordingly, the invention is to be limited only by the scope of the following claims and their equivalents.