NZ789921A - Container - Google Patents

Abstract

collapsible container includes a base including a first cam surface, a second cam surface, and a third cam surface. A hinge permits vertical translation of a wall relative to the base. The wall includes a first follower, a second follower, and a third follower, wherein the first follower is configured to contact the first cam surface during a first angular interval, wherein the second follower is configured to contact the second cam surface during a second angular interval, and wherein the third follower is configured to contact the third cam surface during a third angular interval. A retractable wall may include a pair of vertical portions defining an opening therebetween. An upper portion and a lower portion may be pivotably connected to the pair of vertical portions. A link having an arm may be pivotably connected to the upper portion and pivotably connected to the lower portion. ured to contact the first cam surface during a first angular interval, wherein the second follower is configured to contact the second cam surface during a second angular interval, and wherein the third follower is configured to contact the third cam surface during a third angular interval. A retractable wall may include a pair of vertical portions defining an opening therebetween. An upper portion and a lower portion may be pivotably connected to the pair of vertical portions. A link having an arm may be pivotably connected to the upper portion and pivotably connected to the lower portion.

Description

A collapsible container es a base including a first cam surface, a second cam surface, and a third cam surface. A hinge permits vertical translation of a wall relative to the base. The wall es a first follower, a second follower, and a third follower, wherein the first follower is configured to contact the first cam surface during a first angular interval, wherein the second follower is configured to contact the second cam surface during a second angular interval, and wherein the third follower is configured to contact the third cam surface during a third r interval. A retractable wall may include a pair of vertical portions ng an opening therebetween. An upper portion and a lower portion may be pivotably connected to the pair of vertical portions. A link having an arm may be pivotably connected to the upper portion and pivotably ted to the lower portion.

NZ 789921 CONTAINER BACKGROUND sible containers generally include a base, a pair of opposed long walls connected to long edges of the base and pivotable n a collapsed position on the base and an upright, use position. A pair of opposed short walls are ted to short edges of the base and are pivotable between a collapsed position on the long walls on the base and an upright use position.

The long walls are longer than the short walls, such that the long walls will overlap one another when collapsed (because the long walls are closer to one another) and the short walls do not overlap one another. In some collapsible containers, when the second long wall is collapsed onto the first long wall, it will not be parallel to the base, which will increase the height of the collapsed container.

In some sible containers, one of the long walls is pivotably connected to the base about an axis that is higher than the other, such that lower-axis long wall must be collapsed onto the base and the higher-axis long wall must be collapsed onto the loweraxis long wall. This provides flat, collapsed long walls, but requires a particular sequence of collapsing the two long walls.

Some collapsible containers provide long walls with hinges that are also vertically atable such that either long wall can be collapsed directly onto the base and either long wall can be collapsed onto the first long wall and in either sequence, both long walls will be parallel to the base. In other words, the long walls can be collapsed in either sequence. This provides a compact volume when collapsed, but the vertically translatable hinges do not always pivot and slide smoothly, especially when moving from the collapsed position ly on the base to the upright position.

The ee of the present application has developed a series of containers with at least one retractable wall through which product in the container can be retrieved even while other containers are stacked thereon. For example, such a container may be filled with cartons of eggs. A stack of such containers could be loaded into a erator of a store. While stacked, the front walls of the ners could be retracted, providing customers with access to the egg cartons in the ners without the need to unload the containers. The containers may be collapsible, such that when they are empty, they can be collapsed to an efficient volume for storage and return to the warehouse for reuse.

In some retractable wall s, the retractable wall includes a plurality of wall portions that are pivotable outward to provide access to the or. To retract the wall, the user releases a latch and then pivots an upper portion outward. This causes one or more lower portions to pivot outward as well. It is desirable for this motion to be , without binding.

SUMMARY An improved vertically translatable hinge is disclosed herein. The improved hinge could be used with any collapsible container, with or without one or more retractable walls.

An improved retractable wall for a container is also disclosed herein. The retractable wall proves a smoother, more reliable retracting motion. The retractable wall could be used with a collapsible container or a non-collapsible container.

Some of the features described herein relate to a collapsible container including a base and a first wall. The base includes a first cam surface, a second cam surface, and a third cam surface. The first wall is pivotably connected to the base by a hinge and is pivotable through first, second and third angular als between a collapsed position on the base and an upright position. The hinge permits vertical translation of the first wall relative to the base. The first wall including a first er, a second follower, and a third follower, wherein the first follower is configured to contact the first cam surface during the first angular interval, the second follower is configured to t the second cam surface during the second angular interval, and the third er is configured to contact the third cam e during the third angular interval.

The first er may be configured not to contact the first cam surface during at least a portion of the second angular interval. The second follower may be ured not to contact the second cam surface during at least a portion of the third angular interval.

When the first wall is moved from the collapsed position to the upright position, the first wall may move through the first angular interval, then through the second angular interval, and then through the third angular interval.

The first wall may be translated vertically by the first cam surface, the second cam surface, and the third cam surface as it moves between the collapsed position on the base and the upright position.

A pivot axis of the first wall may be translated ally ve to the base by the first cam surface, the second cam surface, and the third cam surface as the first wall moves between the collapsed position on the base and the upright position.

A hinge pin of the first wall may be ated vertically by the first cam surface, the second cam surface, and the third cam surface as it moves between the collapsed position on the base and the upright position.

The first follower may be one of a plurality of first followers. The second follower may be one of a plurality of second followers. The third follower may be one of a plurality of third followers. The first cam surface may be one of a plurality of first cam surfaces.

The second cam surface may be one of a plurality of second cam surfaces. The third cam surface may be one of a plurality of third cam surfaces. Each of the plurality of first ers is configured to t one of the ity of first cam surfaces during the first r interval. Each of the plurality of second followers is configured to contact one of the plurality of second cam surfaces during the second angular interval. Each of the plurality of third followers is configured to contact one of the third cam surfaces during the third angular interval.

The hinge may include a hinge pin pivotable and slidable vertically in a slot.

A second wall may be pivotably connected to the base opposite the first wall, wherein the second wall is translatable vertically relative to the base. The collapsible container may further include a pair of end walls pivotably connected to the base, wherein the pair of end walls are pivotable between an upright position and a collapsed position on the first wall and the second wall.

The first wall may include a U-shaped frame pivotably connected to the base and having a lower horizontal portion and a pair of vertical ns. The first wall may further include an upper portion and a lower n pivotably connected to the pair of al portions.

In some aspects, the features described herein relate to a container including a base and a wall. The wall extends upward from the base. The wall may include a pair of vertical ns defining an opening therebetween, an upper n pivotably ted to the pair of vertical portions, and a lower portion pivotably and slidably connected to the pair of vertical portions.

A link having an arm may be bly connected to the upper portion and pivotably connected to the lower portion.

The link may be pivotably connected to the upper portion toward an interior of the container and the link may be pivotably connected to the lower portion toward an exterior of the container.

The link may further e a stop member configured to limit relative rotation of the link and the lower portion.

The stop member may extend downward from an axis of ve rotation of the link and the lower portion.

The lower portion may be connected to the pair of vertical portions by hinges. Each hinge may include a pin pivotable and slidable within a slot extending from an outer on toward an exterior of the container and an inner position toward an interior of the container.

In each hinge, the pin may be formed on the lower portion and the slot may be formed on the vertical portion and wherein the slot angles downward as it extends toward the interior of the container.

In some s, the features described herein relate to a container may include a base and a wall extending upward from the base. The wall may include a pair of vertical portions defining an opening therebetween. The wall further may e an upper portion pivotably ted to the pair of al portions and a lower portion pivotably connected to the pair of vertical portions. A link having an arm may be pivotably connected to the upper n and pivotably connected to the lower portion.

The link further may include a stop member configured to limit relative rotation of the link and the lower portion.

The stop member may extend downward from an axis of relative rotation of the link and the lower portion.

The link may be pivotably connected to the upper portion toward an interior of the container and the link may be bly connected to the lower portion toward an exterior of the container.

The arm of the link may be one of a pair of arms projecting from a lower member.

The lower member may be rotatably coupled to the lower portion.

The link may include at least one stop member projecting from the lower member and configured to contact the lower n and to initiate rotation of the lower portion upon rotation of the upper portion outward from the pair of vertical portions.

The link may be pivotably connected to the upper portion toward an or of the container and the link may be pivotably connected to the lower portion toward an exterior of the container.

BRIEF DESCRIPTION OF DRAWINGS Figure 1 is a perspective view of a collapsible container according to one example embodiment.

Figure 2 shows the front wall of the container of Figure 1.

Figure 3 is an enlarged view of a one end of the front wall of Figure 2.

Figures 4 and 5 are front and rear perspective views of the upper portion of the front wall of Figure 3.

Figures 6 and 7 are front and rear perspective views of the lower portion of the front wall of Figure 3.

Figures 8 and 9 are front and rear perspective views of the frame of the front wall of Figure 3.

Figure 9A is an enlarged view of one of the vertical ns of the frame of Figure 8.

Figure 10 is a bottom perspective view of the rear wall.

Figure 10A is an enlarged view of a portion of the rear wall of Figure 10.

Figures 11 and 12 show the link of Figure 2.

Figure 13 shows the front wall and base of Figure 1 lly broken away.

Figure 14 shows an initial step in retracting the front wall of the container of Figure Figure 15 is a section view through the front wall of the container of Figure 1 in the upright, closed position.

Figure 16 shows the front wall of Figure 15 in the l step of being retracted.

Figures 17 to 23 show the front wall of Figure 15 in subsequent steps of being retracted.

Figure 24 shows the front wall of Figure 15 fully retracted.

Figure 25 is a perspective view of the container of Figure 1 with the front wall fully retracted.

Figure 26 shows a partial perspective view of the base of the container of Figure Figure 27 is a ctive view of the base of Figure 26 partially broken away through one of the first cam surfaces.

Figure 28 is a section view through the front wall, rear wall and base, through two of the first came surfaces 80.

Figure 29 is an enlarged section view of a lower portion of the frame.

Figure 30 shows the frame of Figure 29 installed in the base.

Figure 31 is a section view of the container in a collapsed position with the rear wall on top of the front wall.

Figure 32 is a section view of the container in the collapsed position with the front wall on top of the rear wall.

Figure 33 is a perspective view of the base and rear wall of Figure 1 fying the first cam es.

Figure 34 shows the base and rear wall of Figure 33 identifying the second cam surfaces.

Figure 35 shows the base and rear wall of Figure 33 identifying the third cam surfaces 84.

Figure 36 shows each of the three cam surfaces in action during five phases of the wall moving from the horizontal to the upright position.

Figure 37 is a ctive view of the container of Figure 1 in the fully collapsed position.

DESCRIPTION OF PREFERRED EMBODIMENT A collapsible container 10 according to one embodiment is shown in Figure 1. In Figure 1, the container 10 is in an upright, assembled on. The ner 10 includes a base 12. A rear wall 14, opposed end walls 16 and a front wall 18 are pivotably connected at a periphery of the base 12.

The base 12 includes upstanding s 17 projecting upward from rear and front edges of the base 12 and formed integrally with the rest of the base 12. The base includes end flanges 19 projecting upward from end edges of the base 12 and formed integrally with the rest of the base 12. The front wall 18 and rear wall 14 are pivotably connected to the flanges 17 at the front and rear edges of the base 12, respectively. The end walls 16 are pivotably connected to the end flanges 19 at the end edges of the base 12. The end flanges 19 are taller than the front and rear flanges 17.

The front wall 18 includes a frame 20 pivotably connected to the flange 17 at the front of the base 12. The frame 20 includes a lower horizontal portion 21 and a pair of upright al portions 22, together forming a U shape opening upwardly, with the large opening being the vast majority (over 90%) of the area of the front wall 18. The front wall 18 further includes an upper (or “first”) portion 24 and a lower (or “second”) portion 28 within the frame 20. In Figure 1, the front wall 18 is in the closed position with the upper portion 24 and lower n 28 substantially closing the large opening in the frame 20.

In Figure 1, the walls 14, 16, 18 are in their t, use position. The front wall 18 is in its deployed, closed position, with the upper portion 24 and lower portion 28 extending across an upper portion and a lower n respectively, of the large g defined by the frame 20. In the ed, closed position, the front wall 18 keeps objects, such as egg cartons, in the container 10.

The end walls 16 are pivotably connected to the end flanges 19 of the base 12.

Each end wall includes a handle opening 42 near an upper edge thereof. Each end wall 16 includes a pair of latches 44 molded therein for selectively securing the end wall 16 to the rear wall 14 and to the front wall 18 (more specifically to the frame 20).

Figure 2 shows the front wall 18. Figure 3 is an enlarged view of a one end of the front wall 18. The other end would be mirror image. Referring to Figures 2 and 3, the upper portion 24 includes a horizontal wall portion 30 and a pair of arms 32 ing downward from ends of the horizontal wall portion 30 in a direction generally in the plane of the horizontal wall portion 30 to form generally a U-shape (opening downward in Figure 2). In s 2 and 3, the upper portion 24 is ively secured to the frame 20 in a retracted, closed position by latches 48. The arms 32 of the upper n 24 are pivotably connected to the vertical portions 22 of the frame 20 via hinges 33.

The lower portion 28 includes a horizontal wall portion 38 and a pair of arms 40 extending downward from ends of the horizontal wall portion 38 in a direction generally in the plane of the horizontal wall portion 38 to form generally a U-shape (opening downward in Figure 1). The arms 40 of the lower portion 28 are pivotably connected to the vertical portions 22 of the frame 20 via hinge pins 43, which will be explained in more detail below. The lower portion 28 is partially received between the arms 32 of the upper n 24. In this example, the horizontal wall n 38 and upper portions of the arms 40 are received between lower portions of the arms 32 of the upper portion 24.

A link 60 connects the lower portion 28 to the upper portion 24. The link 60 includes a lower member 62 extending the full width of the lower portion 28. The lower member 62 is higher ive to the base 12, Figure 1) than the hinge 33 of the upper portion 24. Arms 64 project upward (in Figure 2) from opposite ends of the lower member 62 to coupling members 66. The lower member 62 is pivotably secured to the lower portion 28. The coupling members 66 are bly secured to the upper portion 24 at points between the hinge 33 and upper edge of the upper portion 24.

A plurality of hinge members 70 project rd from the lower horizontal portion 21 of the frame 20 and are formed integrally with the frame 20. Each hinge member 70 includes a hinge pin 72.

Figures 4 and 5 are front and rear perspective views of the upper portion 24. Mid hinge pins 36 are positioned between the hinge pins 33 and an upper edge of the upper portion 24. The hinge pins 33 are positioned toward the front ior) and the mid hinge pins 36 are positioned toward the back (interior) of the upper portion 24. The mid hinge pins 36 are configured to be pivotably connected to the coupling members 66 of the link 60 (Figure 2).

Figures 6 and 7 are front and rear perspective views of the lower portion 28. The lower portion 28 includes the pair of arms 40 extending from ends of the horizontal wall portion 38 generally in the plane of the horizontal wall portion 38 to form substantially a U-shape opening rd. Hinge pins 43 project outward from lower ends of the arms 40 of the lower portion 28. The lower portion 28 includes a plurality of notches 74 (three in this example) that open forward (toward the exterior) and are configured to receive the lower member 62 of the link 60 via a snap-fit connection, such that the lower member 62 would be rotatably ted within the notches 74. The notches 74 are positioned forwardly (toward the exterior) of the lower portion 28 to position that pivot axis of the link 60 relative to the lower portion 28 forward (i.e. toward the exterior). s 8 and 9 are front and rear perspective views of the frame 20. Each of the vertical portions 22 includes an upper hinge er 76 for receiving the hinge pin 33 of the upper portion 24 (Figure 4). Each of the vertical portions 22 includes a lower hinge receiver 78 for receiving the hinge pin 43 of the lower portion 28 (Figure 6). The lower hinge receivers 78 are lower than the upper hinge receivers 76 and are spaced inward (i.e. toward one another) of the upper hinge receivers 76.

Figure 9A is an enlarged inner view of one of the vertical portions 22 of the frame . The lower hinge receiver 78 is an angled slot, angled downwardly from front to rear (i.e. from exterior to interior) of the frame 20. The other lower hinge er 78 is the same.

The plurality of hinge members 70 t downward from the lower horizontal portion 21 of the frame 20 and are molded integrally with the frame 20. Again, each hinge member 70 es the hinge pin 72. The hinge pin 72 of each hinge member 70 includes a tongue 90 ing downward and angling outward slightly (i.e. toward the exterior while the frame 20 is in the vertical position). Each tongue 90 is a first follower, as will be explained below. The hinge member 70 further includes an inwardly projecting lobe 92, which is horizontal when the frame 20 is in the vertical position.

The lower surface of the frame 20 further includes a plurality of second followers 52 and a ity of third followers 54. The second followers 52 project downward further than do the third ers 54.

Figure 10 is a bottom perspective view of the rear wall 14. Figure 10A is an enlarged view of a portion of the rear wall 14 of Figure 10. In this embodiment, the bottom of the rear wall 14 is the same as the bottom of the frame 20 (Figures 9 and 9A) so both the front wall 18 and the rear wall 14 are vertically translatable and they can be folded onto the base 12 in either sequence. The plurality of hinge members 70 project downward from the bottom of the wall 14. Again, each hinge member 70 includes the hinge pin 72.

The hinge pin 72 of each hinge member 70 includes a tongue 90 extending downward and angling outward slightly (i.e. toward the exterior while the rear wall 14 is in the vertical position). Each tongue 90 is a first follower, as will be ned below. The hinge member 70 further includes an inwardly projecting lobe 92, which is substantially ntal when the rear wall 14 is in the vertical position.

The lower surface of the rear wall 14 further includes a plurality of second followers 52 and a ity of third followers 54. The second followers 52 project downward further than do the third followers 54.

Figures 11 and 12 show the link 60. Again, the link 60 includes the lower member 62. Arms 64 project upward (in Figures 11 and 12) from opposite ends of the lower member 62 to coupling members 66. The coupling members 66 may be C-shaped coupling members, capable of a snap-fit ble connection. As is further shown in Figures 11 and 12, stop members 68 t downward from the lower member 62.

Figure 13 shows the front wall 18 partially broken away. With the front wall 18 in the upright, closed position as shown, the stop member 68 of the link 60 abuts the wall portion 38 of the lower n 28. The hinge pin 43 is oned at a forward (i.e. toward the exterior), upper end of the lower hinge receiver 78 (again, the opposite side of the front wall 18 would be the same).

As shown in Figure 14, after releasing the latches 48, the front wall can be moved toward a retracted position by pivoting the upper portion 24 outward on its hinges 33. This also causes the lower portion 28 to pivot outward as explained below.

Figure 15 is a section view through the front wall 18 in the t, closed position, similar to Figure 13. As can be seen in Figure 15, the mid hinge pins 36 are positioned toward the interior of the container 10 and the lower member 62 of the link 60 is oned toward the or of the container 10, putting the link 60 at about a ten-degree angle. The lower member 62 of the link 60 is the axis about which the lower portion 28 pivots relative to the link 60.

In Figure 16, the upper portion 24 has been d outward slightly on its hinges 33 (not visible). This forces the upper ends of the arms 64 of the link 60 outward as well.

The stop members 68 of the link 60 bear against the wall portion 38 of the lower portion 28, which causes the lower member 62 of the link 60 to move the upper end of the lower portion 28 outward, pivoting the lower portion 28 on its hinge pins 43 within the lower hinge receivers 78. In this way, by causing the lower portion 28 to pivot outward soon after the upper portion 24 starts to pivot outward, the front wall 18 movement is smoother and less likely to bind. Generally, the hinge pins 43 start to slide downward and inward (rearward) away from the upper forward ends of the lower hinge receivers 78. This helps keep the force vector outside the lower rotation point (the hinge pins 43), which again provides smoother movement and avoids binding.

In s 17 and 18, as the upper portion 24 is pivoted further outward, the upper portion 24 pushes outward and downward on the lower portion 28 via the arms 64 of the link 60, which is now outward of the hinge pins 43. Because the forces are outward of the hinge pins 43, the lower portion 28 is ensured to pivot smoothly without binding.

Figures 19 and 20 show the upper portion 24 and lower portion 28 pivoted further outwardly. The hinge pins 43 continue to move inward and downward in the lower hinge receivers 78.

In Figures 21 and 22, the upper portion 24 is past ntal.

In Figure 23 the lower portion 28 contacts the lower horizontal portion 21 of the frame 20. This causes the hinge pins 43 to start to pivot outward (forward toward the exterior) in the lower hinge receivers 78, which also lifts the lower portion 28 as the hinge pins 43 travel up the lower hinge receivers 78.

In Figure 24, the hinge pins 43 are returned to the ost portions of the lower hinge receivers 78, which lifts the lower portion 28 iently to be received within the cavity of the upper portion 24. The stop members 68 are also partially received within the flange 17 of the base 12, as shown in Figure 24. In this manner, the upper portion 24 and lower portion 28 are nested within one r and flat against the front flange 17 of the base 12 and lower horizontal portion 21 of the frame 20, as shown in s 24 and 25.

As an additional, independent feature (i.e. it could be practiced with or without a retractable front wall), the hinges that connect the two overlapping walls (in this case, the front wall 18 and rear wall 14) are vertically translatable. By permitting vertical translation of the hinge, when the walls 14, 18 are collapsed, either one can be collapsed first with the other on top of the first, and both walls will be flat on the base 12. This reduces the l height of the container 10 when it is empty and collapsed. This will be described in the subsequent figures.

Figure 26 shows a partial view of the base 12. Front and rear flanges 17 include a plurality of each of three different cam surfaces. A first cam surface 80 is an upper surface formed by an opening through an outer wall of the flange 17. A second cam surface 82 is a convex surface starting on an inner surface of the flange 17 and continuing in a curved path upward and outward toward an outer wall of the flange 17. A third cam surface 84 is also a convex surface starting on an inner surface of the flange 17 and continuing in a curved path upward and outward toward an outer wall of the flange 17, but the third cam surface 84 has a larger radius and ends higher than the second cam e 82. Again, there are a ity of each of these cam surfaces 80, 82, 84 on each of the front and rear flanges 17. In the example shown, the front wall 18 and the rear wall 14 are connected to the front and rear flanges 17 in an identical manner.

Figure 27 is a perspective view of the base 12 partially broken away through one of the first cam surfaces 80. Figure 28 is a section view through the front wall 18, rear wall 14 and base 12 of the container 10, again through two of the first cam surfaces 80.

Figure 29 is an ed section view of a lower n of the frame 20. The hinge pin 72 of each hinge member 70 includes a tongue 90 extending downward and g outward d the exterior) slightly while the frame 20 is in the vertical position. The hinge member 70 further includes an inwardly projecting lobe 92, which is horizontal when the frame 20 is in the vertical position. Again, the rear wall 14 would be the same.

Figure 30 shows the frame 20 of Figure 29 led in the base 12. The hinge pin 72 is received in a al slot 94 within the flange 17 of the base 12. The first cam surface 80 is adjacent the slot 94. Again, the rear wall 14 would be the same.

Figure 31 is a section view of the container 10 in a sed position with the rear wall 14 on top of the front wall 18. Figure 32 is a section view of the container in the collapsed position with the front wall 18 on top of the rear wall 14. In each, the hinge pin 72 of the upper wall slides to the top of the slot 94 and the hinge pin 72 of the lower wall slides to the bottom of the slot 94. In this manner, the walls 14, 18 both lie flat on the base 12 reducing the stacking height of the container 10 when it is empty.

The cam surfaces are engaged when moving the walls 14, 18 from the collapsed position to the upright position. It is desirable for the hinge pin 72 of the lower wall to be moved upward in the slot 94 t binding. Generally speaking, the three cam surfaces work sequentially to accomplish this smoothly.

Figure 33 shows the first cam surfaces 80 in one of the flanges 17, but the other flange 17 is identical. Figure 34 shows the second cam surfaces 82 in one of the flanges 17, but the other flange 17 is identical. Figure 35 shows the third cam surfaces 84 in one of the flanges 17, but the other is identical.

Figure 36 shows section views A-O of each of the three cam surfaces in action during five phases of the wall moving from the horizontal to the t position. Although rated with respect to the rear wall 14, the front wall 18 (more specifically, the frame ) would operate identically. Figure 36 shows the rear wall 14 moving from a position collapsed directly on the base 12 to the upright position because this is the movement where vertical translation would occur. Pivoting from a position collapsed on the front wall 18 would be substantially just a pivoting motion with little to no vertical translation (but the third cam surface 84 may contribute some al translation).

Referring to Figure 36, only the first cam surface 80 is engaged by the first follower (tongue 90) during a first angular al from about zero to about fifteen degrees (views A-B). As the wall 14 is d to about fifteen degrees, the tongue 90 lifts the wall 14 leveraging on the first cam surface 80. In this first angular interval, the second cam surface 82 is not engaged by the second follower 52 (views F-G) and the third cam surface 84 is not engaged by the third er 54 (views K-L).

Around forty-five degrees the second cam surface 82 is engaged by the second follower 52 on the underside of the wall 14 (view H), which further lifts the rear wall 14 vertically during this second angular interval between about forty-five degrees and sixty degrees (views H-I). The first cam surface 80 loses engagement with the first follower 90 as the rear wall 14 is lifted further (views C-D) and the third cam surface 84 has not yet been engaged by the third follower 54 (views M-N). Of course, some overlap in the intervals would occur such that there are small angular intervals where more than one cam surface is engaged by more than one follower (e.g. the first follower 90 may engage the first cam surface 80 for a small angular interval while the second follower 52 engages the second cam surface 82, and the second follower 52 may engage the second cam surface 82 for a small angular interval while the third follower 54 s the third cam surface 84).

Between about sixty and about ninety degrees (a third r al), the third cam surface 84 is engaged by the third er 54 on the underside of the rear wall 14 (views N-O), which completes lifting the rear wall 14 into place where it is supported.

During the third angular interval, the second cam surface 82 loses engagement with the second follower 52 as the rear wall 14 is lifted further (I-J). The first follower 90 does not engage the first cam surface 80 during the third angular interval (views D-E).

As shown in Figures 9A, 10A, 26 and 33-35, there are a plurality of first followers 90, a plurality of second followers 52, and a ity of third followers 54, each aligned with one of the first cam surfaces 80, one of the second cam surfaces 82, and one of the third cam surfaces 84, respectively.

Figure 37 is a perspective view of the container 10 in the fully collapsed position.

In Figure 37, the front wall 18 is collapsed ly onto the base 12 and the rear wall 14 is collapsed onto the front wall 18, but as explained above, the rear wall 14 could be collapsed directly onto the base 12 with the front wall 18 collapsed onto the rear wall 14 and the walls 14, 18 would still be flat relative to the base 12. In either configuration, the end walls 16 are then collapsed onto the front wall 18 and rear wall 14, as shown.

Alternatively, it is possible to implement the cam surfaces on the bottom of the walls 14, 18 and the cam followers on the base 12.

Each of the components described above is preferably injection molded of a suitable plastic.

In accordance with the provisions of the patent statutes and jurisprudence, exemplary urations bed 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 ically illustrated and described without departing from its spirit or scope.

Claims (37)

1. A collapsible ner comprising: a base; 5 a first wall pivotably connected to the base by a hinge and pivotable through first and second angular intervals between a collapsed on on the base and an upright position, the hinge ting translation of the first wall toward and away from the base; a first cam surface; a first follower configured to contact the first cam e during the first angular 10 interval and to lift the first wall away from the base during the first angular interval; a second cam surface; and a second follower configured to t the second cam e during the second angular interval and to lift the first wall away from the base during the second angular interval. 15

2. The collapsible container of claim 1 wherein the first cam surface and the second cam surface are formed on the base and wherein the first follower and the second follower are formed on the first wall.

3. The collapsible ner of claim 1 wherein the first follower does not contact the first cam surface during at least a portion of the second angular interval. 20

4. The collapsible container of claim 3 wherein the first wall is pivotable through a third angular interval between the collapsed position and the upright position and wherein the container further includes a third cam surface and a third follower, and wherein the third follower is configured to contact the third cam surface during the third angular interval and to lift the first wall away from the base during the third angular interval.

5. The collapsible container of claim 4 n the second er does not contact the second cam surface during at least a portion of the third angular interval. 5

6. The collapsible container of claim 5 wherein when the first wall is moved from the collapsed position to the upright position, the first wall moves through the first angular interval, then through the second angular interval, and then through the third r interval.

7. The collapsible container of claim 6 wherein the first wall is translated 10 away from the base by the first cam e, then by the second cam surface, and then by the third cam surface as it moves from the collapsed on on the base toward the t position.

8. The sible container of claim 7 wherein a hinge pin of the first wall is translated away from the base by the first cam surface, the second cam surface, and the 15 third cam surface as it moves between the collapsed position on the base and the upright position.

9. The collapsible container of claim 8 wherein the first follower is one of a plurality of first followers, wherein the second follower is one of a plurality of second followers, the third follower is one of a plurality of third followers, the first cam surface 20 is one of a plurality of first cam surfaces, the second cam surface is one of a plurality of second cam es, and the third cam surface is one of a plurality of third cam surfaces, wherein each of the plurality of first followers is configured to contact one of the plurality of first cam surfaces during the first angular interval, wherein each of the plurality of second followers is configured to contact one of the plurality of second cam surfaces during the second angular interval, and wherein each of the plurality of third followers is configured to contact one of the third cam surfaces during the third angular interval.

10. The collapsible container of claim 9 wherein the hinge includes hinge pin 5 pivotable and slidable ally in a slot.

11. The sible container of claim 10 further including a second wall pivotably ted to the base opposite the first wall, wherein the second wall is translatable vertically relative to the base, the collapsible container further including a pair of end walls pivotably connected to the base, wherein the pair of end walls are pivotable 10 between an upright position and a collapsed on on the first wall and the second wall.

12. The collapsible container of claim 1 n the first wall includes a U- shaped frame having a lower horizontal portion pivotably connected to the base and a pair of vertical portions, the first wall further including an upper portion and a lower portion pivotably connected to the pair of al ns. 15

13. The collapsible container of claim 1 wherein a pivot axis of the first wall is translated vertically ve to the base by the first cam surface and the second cam surface as it moves between the collapsed position on the base and the upright position.

14. The collapsible container of claim 1 wherein a hinge pin of the first wall is ated away from the base by the first cam surface and the first follower during the 20 first angular interval and by the second cam surface and the second follower during the second angular interval.

15. The collapsible container of claim 1 wherein the first follower is one of a plurality of first followers, wherein the second follower is one of a plurality of second followers, the first cam surface is one of a plurality of first cam surfaces, and the second cam e is one of a plurality of second cam surfaces, wherein each of the plurality of first followers is configured to contact one of the plurality of first cam surfaces during the first angular al, and n each of the plurality of second followers is configured 5 to t one of the plurality of second cam surfaces during the second angular interval.

16. The collapsible container of claim 15 wherein the hinge includes hinge pin pivotable and slidable vertically in a slot.

17. The sible container of claim 1 further including a pair of end walls pivotably connected to the base, wherein the pair of end walls are pivotable between an 10 upright position and a collapsed position on the first wall, and wherein each of the pair of end walls includes a handle opening therethrough.

18. A container comprising: a base; and a wall extending upward from the base, the wall including a pair of vertical 15 portions defining an opening etween, the wall further including an upper portion pivotably connected to the pair of vertical portions and a lower portion pivotably and slidably connected to the pair of vertical portions.

19. The container of claim 18 further ing a link having an arm pivotably connected to the upper portion and pivotably connected to the lower portion.

20 20. The ner of claim 19 wherein the link is pivotably connected to the upper portion toward an interior of the container and the link is pivotably connected to the lower portion toward an exterior of the container.

21. The container of claim 20 wherein the link further includes a stop member configured to limit relative rotation of the link and the lower portion.

22. The container of claim 21 wherein the stop member extends rd from an axis of relative rotation of the link and the lower portion. 5

23. The container of claim 18 wherein the lower portion is ted to the pair of vertical ns by hinges, wherein each hinge includes a pin pivotable and slidable within a slot extending from an outer position toward an exterior of the container and an inner position toward an interior of the container.

24. The ner of claim 23 wherein in each hinge, the pin is formed on the 10 lower portion and the slot is formed on the vertical portion and wherein the slot extends downward at an angle as it extends toward the or of the container.

25. A container comprising: a base; a wall extending upward from the base, the wall including a pair of vertical 15 portions defining an opening therebetween, the wall further including an upper n pivotably connected to the pair of vertical portions and a lower portion pivotably connected to the pair of vertical portions; and a link having an arm pivotably connected to the upper portion and bly connected to the lower portion. 20

26. The container of claim 25 wherein the link r includes a stop member configured to limit relative rotation of the link and the lower portion.

27. The container of claim 26 wherein the stop member extends downward from an axis of relative rotation of the link and the lower portion.

28. The container of claim 27 wherein the stop member bears against the lower n to cause the lower portion to pivot outward upon initial movement of the upper portion outward from a closed position.

29. The container of claim 27 wherein the link is pivotably ted to the 5 upper portion toward an interior of the container and the link is pivotably connected to the lower portion toward an exterior of the container.

30. The container of claim 25 wherein the arm is one of a pair of arms projecting from a lower member.

31. The container of claim 30 n the lower member is pivotably coupled 10 to the lower portion.

32. The container of claim 30 wherein the link includes at least one stop member projecting from the lower member and configured to contact the lower portion and to te rotation of the lower portion upon rotation of the upper n outward from the pair of al portions. 15

33. The container of claim 25 wherein the link is pivotably connected to the upper portion toward an interior of the container and the link is pivotably connected to the lower portion toward an exterior of the container.

34. A container comprising: a base; and 20 a wall extending upward from the base, the wall including a pair of vertical portions defining an opening therebetween, the wall further ing an upper portion pivotably connected to the pair of vertical portions and a lower portion pivotably and slidably connected to the pair of vertical portions, wherein the upper portion and the lower portion are movable between an upright, closed position and a retracted, open position, wherein the lower portion is configured to slide relative to the pair of vertical portions when moving from the upright, closed position to the retracted, open position so that the lower portion can be nested within the upper portion when the upper n and the lower 5 portion are in the retracted, open position.

35. The container of claim 34 wherein the lower n is connected to the pair of vertical ns by hinges, wherein each hinge includes a pin pivotable and slidable within a slot ting the lower portion to pivot and slide relative to the pair of vertical portions. 10

36. The container of claim 35 wherein each slot extends from an outer position toward an exterior of the container to an inner position toward an interior of the container.

37. The container of claim 36 wherein in each hinge, the pin is formed on the lower portion and the slot is formed on the vertical portion and n the slot extends downward at an angle as it extends toward the interior of the container.