Receptacles – Sectional – Folding
Patent
1998-07-20
1999-11-02
Pollard, Steven
Receptacles
Sectional
Folding
220 15, B65D 724
Patent
active
059753242
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a folding container with four vertical side walls that are hinged to a baseplate. Each of the side walls can pivot inward into a horizontal orientation.
BACKGROUND
It is known to fold two vertical side walls on the narrow sides of a folding container inward along the horizontal hinge axis at the bottom until they rest on the bottom plate. Then the two side walls of the long sides are folded inward over them. In the erected state or configuration, the side walls of the narrow sides rest against a vertical catch strip on the edge of the other side walls. This catch strip protrudes inward and after the side walls of the long sides are folded into the upright position, the side walls of the narrow ends rest against the catch strip with positive fit.
More often than not, the two side walls of the long sides have a height that is greater than half the width of the bottom plate so that they lie on top of each other and as a result, increase the overall height of the container when in the collapsed position.
SUMMARY OF THE INVENTION
An object of the invention is to improve a folding container of the type mentioned at the beginning so that with a simple construction, low consumption of materials, and small dimensions, the height of the side walls lying on top of one another is low in the overlapping region, without significantly reducing the stability of the side walls.
Another object of the invention is to provide a sufficiently large, in particular continuously extending, support surface for the upper horizontal stacking rim on the overlapping side walls, on which stacking rim the container disposed above this one rests.
These objects are attained according to the invention by virtue of the fact that two opposing side walls partially overlap each other in their horizontal orientation, and the overlapped region of the side wall lying underneath has projections and recesses on its upper side, and the overlapping region of the side wall lying above is correspondingly shaped on its underside, in such a way that the total thickness of the two regions overlapping each other corresponds to the thickness of one side wall.
In the overlapping region, this produces an overall height of the two overlapping side walls that is equal to the height or thickness of one side wall or is only insignificantly higher or thicker. The stability of the side walls is maintained and the container disposed above this one is offered a sufficiently large support surface.
A particularly high stability and a low height are achieved if the two regions engage in each other with positive fit.
It is particularly advantageous if the projections are strip-shaped and rest in pocket-shaped and/or slot-shaped cavities, in particular recesses, on the other side wall. When the side wall is erected vertically, the projections on the upper horizontal (end face) edge (25) of the side wall can constitute horizontal support surfaces for a container disposed above this one.
This makes a continuous stacking rim possible. The container rim is so formed that in the region of the upper rim, the lower side wall has been recessed by one wall thickness, and, inside the stacking rim, has a pocket-shaped, continuous recess pointing toward the container bottom. Support ribs that support the stacking rim are introduced partway into this recess.
On the side wall which is folded in second, the pocket is correspondingly formed toward the outside (pointing upward) and supports the stacking rim with support ribs that are directed inward or point downward. Now the stacking rims are inserted into the respective pockets. The support ribs are inserted into corresponding recesses in the stacking rim and in the stack boundaries. It is consequently achieved that a stacking rim can be formed that is laterally defined over nearly the entire depth of the wall, and it is nevertheless possible for side walls to overlap.
Therefore it is also proposed that support ribs (26) are disposed between the projections, extending laterally in re
REFERENCES:
patent: 3874546 (1975-04-01), Sanders et al.
patent: 4300695 (1981-11-01), Hsu
patent: 4674647 (1987-06-01), Gyenge et al.
patent: 4917255 (1990-04-01), Foy
Gebr. Otto KG
Oliver Milton
Pollard Steven
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