BACKGROUND OF THE INVENTION
The present invention relates generally to collapsible crates and more particularly to a collapsible crate with retractable support members for supporting another container thereon.
Collapsible crates are well known. Four walls are each connected via a hinge to a base and are selectively movable about the hinge between an upright (or use) position, in which the wall is generally perpendicular to the base, and a collapsed position onto the base. Various latch mechanisms have been provided to connect adjacent walls at the corner to selectively lock the crate in the use position.
Some collapsible crates also include retractable supports so that another container can be supported thereon. One such crate includes end walls, each of which have a support that is partially supported on the adjacent walls when in the support position. However, in some of the designs, the support does not extend far enough into the mouth of the container, away from the end wall. As a result, it is difficult to reliably stack the other container onto the supports without the other container slipping down between the supports. It would be desirable for the supports to extend further into the container, without interfering with the goods in the container below the supports, and such that the supports are still able to be fully retracted out of the interior of the container.
SUMMARY OF THE INVENTION
The present application provides a collapsible container including a base, a pair of opposed side walls, and a pair of opposed end walls which are transverse to the side walls. The side and end walls are pivotably connected to the base between an upright position, generally perpendicular to the base, and a collapsed position on the base. The end wall includes a support which is pivotably and slidably mounted thereto. The support is movable between a retracted position, received substantially within the end wall, and a support position extending into the container. When the side wall and the end wall are in the upright position, the support may be urged toward the support position by an optional arm extending from the side wall. Further, the support is pivotably mounted to the end wall about a movable pivot axis. Particularly, the pivot axis slides closer to the upper edge of the end wall when the support is in the support position than when the support is in the retracted position. Thus, the support can be fully retracted within the end wall and allow the support to extend far enough into the container so that it can be used to reliably support another container.
BRIEF DESCRIPTION OF THE DRAWINGS
Other advantages of the present invention can be understood by reference to the following detailed description when considered in connection with the accompanying drawings wherein:
FIG. 1 is a perspective view of the container of the present application in an upright, assembled position;
FIG. 2 is a perspective view of the container of the present application in a collapsed position;
FIG. 3 is a perspective view of a quarter of the interior the collapsible container of FIG. 1;
FIG. 4 is an exterior view of the corner of the collapsible container of FIG. 3;
FIG. 5 is another view of the collapsible container of FIG. 3, showing in detail the support in the support position;
FIG. 6 is a bottom perspective view of the interior corner of FIG. 3;
FIG. 7 is another view of the collapsible container of FIG. 3, showing the support in the retracted position;
FIG. 8 is a section view through the side wall showing the arm of the side wall in an unbiased (or undeflected) state with the support in the support position;
FIG. 9 is a section view through the side wall showing the arm of the side wall in a deflected state with the support in between the support position and the retracted position;
FIG. 10 is a section view through the side wall showing the arm in a deflected and elastically deformed state with the support in the retracted position;
FIG. 11 is an exterior view of a corner of the collapsible container of FIG. 1 supporting a second container;
FIG. 12 is another view of the collapsible container of FIG. 1, showing in detail the support in the support position with a second container being supported on the support;
FIG. 13 is a perspective view of another embodiment of the support of the present application with the support in the support position; and
FIG. 14 is a perspective view of the embodiment of FIG. 13 showing the support in the retracted position.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 is a perspective view of the collapsible container 10 in an upright position. The container 10 includes a base 12, upstanding side walls 14 (or long walls) and upstanding end walls 18 (or short walls). The side walls 14 and end walls 18 are pivotably connected along long and short edges of the base 12, respectively.
FIG. 2 portrays the collapsible container 10 in the collapsed position. The end walls 18 are collapsed onto the base 12, and the side walls 14 are collapsed onto the end walls 18. By collapsing the container 10 in this manner, the volume of the container 10 is reduced and the container 10 can be easily stored.
FIG. 3 is a perspective view of a quarter of the container 10. The remainder of the container 10 is symmetric. The container 10 is shown in the upright (or assembled) position. Each end wall 18 has a support 20. The support 20 is pivotably and slidably mounted on the end wall 18 and movable between a retracted position and a support position. The support 20 is shown in FIG. 3 in support position, where it projects into the interior of the container 10 where it can support another container stacked thereon. The supports 20 project into arcuate channels 22 formed in each side wall 14. The ends of the supports 20 move in the arcuate channels 22 as the end walls 18 are collapsed onto the base 12.
FIG. 4 is an exterior view of the corner of the container 10 of FIG. 3.
FIG. 5 is an enlarged view of the interior corner of the container 10 of FIG. 3. The side wall 14 includes an integrally molded deformable arm 40 (or some other deformable structure) that contacts an outer surface of the support 20. When the side wall 14 and end wall 18 are in the assembled, upright position as shown, the arm 40 urges the support 20 away from the end wall 18 to the support position.
FIG. 6 shows a bottom perspective view of the interior corner of FIG. 3. The end wall 18 includes a plurality of openings 24 formed in a plurality of brackets 26. The support 20 includes a plurality of arms 28 (one shown in this view), each having a hinge pin 30 formed at a lower end thereof. The hinge pins 30 are received in the brackets 26 and are captured in the openings 24 of the brackets 26. The hinge pins 30 are pivotable and slidable within the openings 24 in the brackets 26. The hinge pins 30 define a movable axis about which the support 20 pivots. The hinge pins 30 slide to the upper end of the openings 24 when the support 20 is in the support position 20. The arms 28 extend at an angle inwardly and upwardly from the hinge pins 30, such that the support 20 extends further into the interior of the container 10 than the supports in some known containers. The end of the support 20 includes a tab 32 projected downwardly behind a rail 34 adjacent the channel 22. The tab 32 interlocks with the rail 34 to prevent the side wall 14 from deflecting outward which could otherwise permit the support 20 to slip off of the side wall 14 when a load is placed on the support 20.
FIG. 7 illustrates the support 20 moved to the retracted position within the end wall 18. The side wall 14 includes an upper rib 50 providing an upper contact surface that contacts the support 20 as the support 20 is moved toward the retracted position. As the support 20 is moved toward the retracted position, the arm 28 is pivoted outwardly and the support 20 contacts the upper rib 50, which causes the hinge pin 30 to slide downward within the vertically elongated openings 24. Also, as the support 20 moves toward the retracted position, the arm 40 is deflected outwardly. The arm 40 continues to urge the support 20 toward the support position, so the support 20 will return to the support position automatically upon release. Note that when the end wall 18 is collapsed onto the base, the support 20 is no longer biased toward the support position.
FIG. 8 is a section view through the side wall 14 toward the interior of the container 10. When the support 20 is in the support position, the arm 40 is in contact with the support 20, but in an undeflected or substantially undeflected, undeformed state. Referring to FIG. 9, as the support 20 is pushed into the retracted position, the support 20 contacts the upper rib 50 of the side wall 14. This forces the support 20 to translate downward (i.e. the hinge pin 30 slides down within the opening 24 (FIG. 7)). As the support 20 is pushed toward the retracted position, the arm 40 is deflected and elastically deformed outwardly until the support 20 is received in the end wall 18 in the retracted position, as shown in FIG. 10.
As shown in FIGS. 11 and 12, when the supports 20 are in the support position, a second container 200 can be supported on the supports 20. As shown in FIG. 12, the support 20 extends further into the interior of the container 10 than some of the supports in the known containers because the support 20 is at the end of a longer, angled arm 28 that pivots and slides relative to the end wall 18 as the support 20 moves to the support position.
FIGS. 13 and 14 illustrate an alternate container 110. The container 110 is substantially similar to the container 10 of FIGS. 1-12, and corresponding parts are referenced with the same reference number, preappended with the numeral “1.” The container 110 includes supports 120 pivotably and slidably mounted to the end walls 118. The end wall 118 includes a plurality of openings 124 formed in a plurality of brackets 126. The support 120 includes a plurality of arms 128 (one shown in this view), each having a hinge pin 130 formed at a lower end thereof. The hinge pins 130 are received in the brackets 126 and are captured in the openings 124 of the brackets 126. The hinge pins 130 are pivotable and slidable within the openings 124 in the brackets 126. The hinge pins 130 define a movable axis about which the support 120 pivots. The hinge pins 130 slide to the upper end of the openings 124 when the support 120 is in the support position 120. The arms 128 extend at an angle inwardly and upwardly from the hinge pins 130, such that the support 120 extends further into the interior of the container 110 than the supports in some known containers. Each support 120 further includes one or more limit arms 144 projecting outwardly and downwardly therefrom. A stop 146 projects outwardly from each limit arm 144. When the support 120 is pivoted to the support position, as shown, the stop 146 contacts a corresponding stop 148 projecting inwardly from the end wall 118. The interference between the stops 146, 148 prevents the support 120 from over rotating inwardly when the support 120 is not supported on the side wall 114 (i.e., while the end wall 118 is being pivoted toward the collapsed position on the base). FIG. 14 illustrates the support 120 in the retracted position, where the stop 146 on the arm 144 of the support 120 is pivoted away from the stop 148 on the end wall 118.
In accordance with the provisions of the patent statutes and jurisprudence, exemplary configurations described above are considered to represent a preferred embodiment of the invention. However, it should be noted that the invention can be practiced otherwise than as specifically illustrated and described without departing from its spirit or scope.
Patent Grant
8317045
