MXPA97010456A - Folding container to transport obje - Google Patents

Abstract

The invention relates to a plastic container for transporting objects with side walls folded inwards, in which, on the hinges (5) in the shape of a pin (8) and eye (10) is divided into a part of hinge (10a) fixed after the mold or by injection to a container component and another part of the adaptation hinge (10b) which can be fixed on the fixed part to form the hinge eye (10) and, in the straight position, the pin engages on both parts of the hinge and / or preferably the V-shaped or U-shaped grooves (19) are formed with two side edges of the opposite side walls (2, 3), which engage in the straight position of the lateral positions behind the safety hooks (20) of the adjacent side walls through a ski

Description

FOLDING CONTAINER FOR TRANSPORTING OBJECTS DESCRIPTION OF THE INVENTION This invention relates to collapsible plastic containers for transporting objects such as fruits and vegetables, which have side walls folded inward so that the container can be converted from a receiving position in which the Side walls are perpendicular to the fondc, to a position in which the container can be dodged without requiring much space. Such collapsible containers are known in various designs. The joints used mainly are union hinges, although they can constitute the weak point of said collapsible container because they can be damaged under load conditions and with frequent use. Such containers, which are mass-produced items, are not treated with care during use; they often unfold very quickly and forcefully, which can soon lead to damage unless the joint hinges are extremely hard combustion. However, if the union hinges are of strong combustion they occupy a lot of superfluous space and also increase the total weight of the collapsible container, which in turn is disadvantageous for its handling. The problem of the invention is to provide a collapsible container that can be easily assembled and disassembled, that is of extremely stable and strong construction and whose joint hinges are not the weak point of the collapsible container. In addition, the container must be easy to handle. This problem is solved according to the invention by the aspects contained in the characterization part of claim 1, the practical development of the invention being characterized by the aspects contained in the secondary claims. According to the invention, the joint hinges are formed as an eye and pin integrally with the parts of the container and each hinge has at least one connecting pin and at least one joining eye., The joining eye is divided in two parts or two halves, one of which forms a part of the fixed hinge and the other is adapted to bend in the fixed part of the hinge and close firmly with it. The division into two parts of the union eye allows for. For example, the lower part of the container is formed integrally with the hinge mechanism. In the injection molding position the fixed part of the hinge and the part of the mounting hinge lie side by side unfolded and are connected by means of a film-like joint. After lifting the injection mold, the part of the mounting hinge can be bent by means of the film hinge on the fixed hinge part and closed therewith, whereby the joint pin, which preferably is formed integrally on a side wall part folded, it is enclosed between the two halves of the hinge. The fixed part of the hinge is formed in a skirt profile of the lower part while the part of the mounting hinge is integrated into a profile strip that will be bent over said skirt profile, or vice versa. In the folded position together of the profile strip of the skirt profile, the profile strip is supported on the profile of the skirt by means of the contact surfaces, the load transmission of the side walls being effected by means of these surfaces. Contact. Due to these contact surfaces, the joint hinge mechanism is essentially not involved in the load transmission, so that the profile strip forms separate segments for the load transmission and for the balancing movement. This considerably frees the union hinges. A further advantage of the invention is that when the side walls are pressed outwards, a reinforcement occurs by means of the contact surfaces and the outward movement of the side walls is blocked. Even in this case there is no load on the joint hinges and the container has a stable unfolded position. Basically one uses a multiplicity of closely spaced connecting hinges in a row on each side wall so that the joint hinges are arranged in the form of a connecting ring. If a joint hinge fails due to rupture or other damage, its function is performed through the other hinges of union. In another embodiment of the invention, the side walls are closed together by mechanisms under pressure, the closure being effected by pressure projections disposed on the side edges of two opposite side walls. In the closed position, the projections are coupled behind the corresponding retainer hooks on the diagonally adjacent side walls. When someone wants to convert the collapsible container from its vertical position to the bent position, only the V-shaped or ü-shaped projections should be compressed so that they can be guided after the detent hooks and the side wall being bent forward. If there is pressure on a side wall in the unfolded position, however, this is intentionally bent into the side wall as the V-shaped or U-shaped protrusions cause a mutual reinforcement of the unfolded side walls which prevents the side walls bend upwards. BRIEF DESCRIPTION OF THE DRAWINGS Some preferred examples of the invention will be described below with reference to the drawings, in which: Figure 1 shows a side view of the narrow side of a folding container from the outside, Figure 2 shows a side view along the outer side of the folding container, Figure 3 shows an analogous view of the Figure 1 but in section on the left half, Figure 4 shows a view analogous to Figure 2 but in section. on the left half, Figure 5 shows a view of the folded container, the left half again being shown in cross section, Figure 6 shows a sectional view through a half of the container with side walls bent inwards, the Figure 7 shows a sectional view comparable to Figure 6 with the bent mounting hinge, Figure 8 shows a sectional view analogous to Figure 6 with several position views of the bent part of the hinge, Figure 9 shows a view in section analogous to figure 7 with several position views of the bent part of the hinge, figure 10 shows a sectional view analogous to figure 6 in the closed position of the bent part of the hinge, figure 11 shows a sectional view analogous to Figure 7 of the part of the hinge bent in the closed position, Figure 12 shows a view corresponding to Figure 11 in an elongated view with a longitudinal section through Figure 13 shows a cross-sectional view comparable to Figure 12 with a side wall bent upwards, Figure 14 shows a sectional view with side walls bent inwardly, Figure 15 shows a view in cross section. section corresponding to figure 14, the section being changed, figure 16 shows two vessels folded in a stacked position, figure 17 shows part section C of figure 3 to illustrate the side wall bolt; and Figure 18 shows a sectional view D of Figure 3 to illustrate the lock of both side walls. The folding container shown in Figures 1 to 4 in an external view and partially in a sectional view is produced integrally and includes the lower part 1 with a rectangular or square plan view and four side walls, namely two opposite narrow side walls 2 and two opposite long side walls 3 on which the operating openings formed by the depressions 4 are present. All the four side walls 2, 3 can be bent inwards, namely along the joint hinges 5 which will be described more closely below. The upwardly bent position of the four side walls can be seen in Figure 5. As better indicated in Figures 1, 3 and 4, the raised skirts 6, 7, are molded on the lower part 1, having the side walls hinged thereto at 8. These raised skirts are coordinated in their height so as to allow the corresponding side wall hinged thereto to be bent over another side wall of the container. For example, the skirt 6 according to Figure 4, ie the skirt associated with the long side wall 3, is formed higher than the skirt 7 located on the narrow side so that the narrow side wall 2 first bends towards inside on the lower part 1, with reference to Figure 4 and then the long upper side wall 3 hinged, is folded over the side wall 2 already folded. This also results more clearly from Figure 5, where the long side walls 3 are bent over the narrow side walls 2 already bent inwards before. This is obtained by the different height of the skirt according to the particular bent positions.

The formation of joint hinges 5 is better explained with reference to Figures 6 to 12. Figure 12 shows that at the lower edge of the side walls, for example, the narrow side wall 2 here, several hinge pins 8 are arranged at regular intervals over the length of the lower edge of the side wall 2, ie, molded on the side wall 2. However, taking into account the sectional view in Figure 12, only er can be seen. detail one of the hinge bolts 8, which is molded on the side wall 2 by means of two flanges 9. As best indicated by the upper left part of Figure 12, each hinge bolt 8 is received in the eye of junction 10 encompassing the hinge bolt 8. The joining eye 10 is divided into 2, the dividing plane being marked as 11. If the hinge pin 8 is completely covered by the eye 10 in the sectional view of the upper part left of Figure 12, this is only due to the course of the cutting plane. It can be clearly seen from Figures 4 and 14, for example, that the hinge pin 8 is completely received in a circular depression of the connecting eye 10 so that a perfect position and therefore a joining fusion is obtained. Figures 6 and 7 show the collapsible container at the time it leaves the injection mold, Figure 6 with a section showing the pressure mechanism 12 and Figure 7 a section showing the attachment eye 10. Specifically, the strip from the profile 13 is hinged by means of the film-like connection part 14 to the skirt 6, which is formed here as a profile open downwards and designated as a skirt profile in the next, so that the part of the The mounting hinge 10b of the connecting eye 10 and also the part of the pressure mechanism 11 are formed on the strip of the profile 13. To form the joint, the strip of the profile 13 only bends around the flexible connection part 14 on the skirt profile 6, as indicated by Figures 8 and 9, so that the catch hook 12 snaps shut behind the pressure projection 15 formed in the skirt profile 6. Similarly, the part of the hinge assembly 10b passes over the m complementary eye of the eye formed in the skirt profile 6, so that the formation of the eye in the strip of the profile 13 and the fixed part of the hinge 10a in the skirt profile 6 complement each other to form the connecting eye 10 The division plane 11 of the duplicated eye 10 is shown again in Figure 9. Figures 10 and 11 show the functional position where the latch or latches engage behind the catch hook 15 and the two eye formations 10a, 10b are complementary to each other to form the connecting eye 10. Figures 10, 11 and 12 indicate more clearly than in the functional position of the hinge of a joint, wherein the profile strip 13 is bent over the skirt profile 6. , the two eye formations 10a, 10b, equalize with their surface in the division plane 11, that is, according to Figure 7 for the complete contact of the surface marked 16 with the formation of the left and right eye 10b including the tip protrudes 17 of the profile strip 13, resulting in accordance with FIG. 12 on a very good contact surface on the width of the skirt profile 6, namely, throughout the plan; of division 11. If one presses the long side wall 3 outwardly around the hinge bolt 8 in the counterclockwise direction according to Figure 12, the surface of the lower side wall 18 will be pressed onto the strip of profile 13 so that the latter is reinforced against the skirt profile 6. The joining hinge therefore nc is loaded. Due to the equalization of the contact surfaces 16 or of the division plane 11, a support occurs, therefore an intensification of the coupling of the coupling hinge, whereby the particular ends 17 of the profile strip 13 and the profile of flap 6 are pressed one on top of the other, so that the outer roll of the side walls 2, 3 is effectively blocked by the formation of the skirt profile 6 and the profile strip 13. That is, the bending container is more protected effectively against the side walls 2, 3 swinging outwards in the bent upward position of the side walls, so that a very stable unfolded position of the side walls is obtained. That is, the strip of the profile 13 in snap engagement with the skirt profile 6 forms a foldable retainer for the unfolded side walls 2, 3 which prevents them from swinging further out of the vertical position. In this position, the clearance of cargo is very good, in such a way that the hinge tecarus is largely discharged. The hitch mechanic is consequently vacated. This formation ensures a division into components for the load transmission and for the rocking motion, so that both the eyes and the hinge bolts are largely unloaded and used only for the swinging motion. Chorus = e indicates in particular in Figures 3 and 13, a multiplicity of separate hinges are provided on each side wall, resulting in a hinge formation similar to a joining ring. This has the advantage that if a hinge or hinge pin formation breaks, the hinge fusion can be made by other hinges. The hinge formations as described herein are obviously intended to be exemplary, so that larger hinge bolts that expand or reach several connecting eyes can also be used. The hinge pins or pins 8 may also have a cross section different from the circular cross section shown, for example, a triangular cross section which is advantageous in terms of production engineering. It is practical that the hinge bolts are connected at both ends to the side walls by means of the flanges 9, since it is an advantage for the stability of the hinge bolts. Figure 16 finally shows the stacking of the bent containers, so that the standing formations 19 in the lower part 1 ensure a gathering of the lateral stack with the lower edges 18 of the side walls, thus obtaining certain fixing the stacked folded containers stacked. Figures 17 and 18 show the latch of the unfolded side walls 2, 3, by which the V-shaped or U-shaped pressure projections 19 are provided, for example, in the side wall 2 on the left and right side , ie in the area of the side walls 3 to be fastened behind the corresponding detent hooks 20 on the side walls 3. If it is desired to fold the side wall 2 inwardly on the bottom part, only the two protrusions need to be compressed. manually so that the front portion 21 of the projections 19 passes the retainer hook 20 and the wall 2 can be bent inwardly. On the other hand, the automatic locking is effected by means of the pressure mechanism when the wall 2 is inadvertently pressed inwardly for example, because the projections 19 are reinforced before the retainer hook 20. This also ensures a stable unfolded position of the valve. container. The bending process, ie the bending in the side walls, presupposes that the suitable pressure is exerted manually on the projections 19 by compression of the projections 15. Only then the projections can be guided inwards after the catch hooks 20. Therefore, it excludes the unintentional collapse of the side walls of the container. Instead, the pressure on the side walls could only cause obstruction of the walls by means of the projections 19.

Claims (3)

1. CLAIMS 1. A plastic container for transporting objects having side walls bent inwards around the joints, characterized in that in the joint hinges each is formed as a pin and eye of union, the eye of union is divided into a part of hinge fixed to a part of the container after the injection molding and a part of the mounting hinge adapted to be mounted on the fixed hinge part to form the binding and locking eye in the assembled position so that the joining pin is it comprises on both sides of the hinge and / or preferably the V-shaped or U-shaped pressure projections are formed integrally on the two lateral edges of the opposite side walls to be fastened behind the catch hooks on the side walls diagonally adjacent in the unfolded position of the side walls. The container according to claim 2, characterized in that the connecting eye is connected integrally with the lower part of the container and the connecting pin with a side wall of the container, or vice versa, and the mounting hinge part is connected with the portion of the container by means of a hinge-like connection preferably of film and adapted to be bent over the fixed and locked hinge part in the bent position. 3. The container according to claim 1, characterized in that the fixed hinge part is formed on the lower side, preferably in a raised skirt profile of the lower part and the mounting hinge part is formed in a profile strip to be bent on the skirt profile. . The container according to any of claims 1 to 3, characterized in that the pressure mechanism is supported at least by a retaining hook formed on the profile strip and a pressure projection formed on the skirt profile. ? . The container according to any of the preceding claims, characterized in that the hinge parts are formed by semicircular depressions in the skirt profile walls or the profile strip. € The container according to any of the preceding claims, characterized in that the semicircular depression is followed by the contact surfaces by means of which the skirt profile and the profile strip are equalized in the form of load transmission. The container according to any of the preceding claims, characterized in that the connecting pin or pins are each molded on the lower edge of the side walls by means of the flanges at both ends. The container according to any of the preceding claims, characterized in that a multiplicity of closely spaced link hinges are arranged in a row on each side wall. 9. The cenrirality container with any of the preceding claims, characterized in that the side walls have at their lower edge an angular edge flange formed in the vertical position of the side walls of the container with the profile strip, a central barrier I roll out of the side walls. The container according to any of the preceding claims, characterized in that the profile strip and the skirt profile have a U-shaped cross section with the open side of the U facing downwards.