EP3638596A1

EP3638596A1 - Heavy load carrier having a swivel flap

Info

Publication number: EP3638596A1
Application number: EP18718805.7A
Authority: EP
Inventors: Matthew DENT
Original assignee: Schoeller Allibert GmbH
Current assignee: Schoeller Allibert GmbH
Priority date: 2017-06-14
Filing date: 2018-04-18
Publication date: 2020-04-22
Anticipated expiration: 2038-04-18
Also published as: DE102017113053A1; ES2906094T3; EP3638596B1; CN110770135A; WO2018228742A1; CN110770135B; US20200122885A1; EP3971100A1; DE102017113053B4; US11453527B2

Abstract

The invention relates to a heavy load carrier having preferably arranged side walls (2, 4, 6, 8), wherein at least one of the side walls (2) has a flap (12) which, in the closed position, closes a flap opening (26) in the side wall and, by pivoting, can be transferred to an open position, in which the flap (12) is folded onto the side wall (2) from outside. The flap (12) is articulatedly connected to the side wall (2) by means of coupling elements (18), wherein the coupling elements (18) are articulatedly connected on the one hand to the side wall by means of side-wall joints and on the other hand to the flap by means of flap joints, and wherein at least one forcible guide (28, 34, 42) for the flap (12) is provided which, as the flap (12) is pivoted, simultaneously effects a translational flap movement in the plane of the flap, in such a way that, during the closing of the flap opening (26), the flap (12) is moved outward in the direction of the upper edge of the side wall (2).

Description

BULK CARRIER WITH SWIVEL FLAP

The invention relates to a large load carrier according to the preamble of claim 1.

More particularly, the invention relates to large load carriers having four circumferentially disposed and pivotally mounted side walls at the bottom of the large load carrier, at least one of which is provided with a flap opening which is preferably hinged outwardly and downwardly to release a flap opening in the sidewall.

Such large load carriers, often called large containers, are within the meaning of the application large load carriers with usually dimensions in the range of 800 x 600 mm, 1200 x 800 mm, 1200 x 1000 mm and 1200 x 1600 mm, which are standard dimensions and in individual cases With respect to the above range, corresponding modifications between the height and width of the corresponding side walls are possible. Ultimately, the height of such large load carrier depends on the desired capacity, so that the above information is not to be understood limiting. A usual height calculated from the footprint of the large load carrier on the ground to the upper edge of the side walls is 1000 mm, which again is not restrictive. But this is a definition of the large load carrier compared to other containers or containers given, such as on pallets in several layers above and next to each other stackable fruit and vegetable containers or crates and the like. The large load carriers are used to hold in particular piece goods and the like and are used in the non-food industry, namely preferably in the automotive industry. On these large load carriers, on the one hand, there is a lightweight, but equally probably due to the amount of cargo to be received stable construction and on a simple handling when unfolding the side walls, if the large load carriers are emptied to allow easy and space-saving return transport.

Such large load carriers are designed as reusable containers and formed in the context of the invention of plastic. The side walls are in a vertical position in which they limit the transport volume or the receiving volume of the large load carrier, coupled by conventional locking elements together, so that a stable bond of the large load carrier is ensured in the upright position of the side walls.

For easier removal of the goods received in the large load carrier, the side walls or at least one side wall are provided with a flap opening, which can be folded down to the outside, wherein in the folded down position, the flap bears against the outer surface of the corresponding side wall. Such pivoting flaps are known (DE 698 26 757 T2), wherein the flap is connected via hinges with the side wall. Alternatively, however, translationally movable flaps are known (DE 10 2008 047 857 AI), in which the flap from the flap opening in the side wall closing position can be moved downwards in front of the outside of the side wall. Both alternatives are in terms of handling and construction, which could be improved, with which the invention is concerned.

The object of the invention is to provide a large load carrier which has a flap on at least one side wall, the handling of which is improved with a simple structure.

This object is achieved by the features contained in the characterizing part of claim 1, wherein expedient developments of the invention are characterized by the features specified in the dependent claims. Likewise, advantageous features are described in the figure description and also shown in the drawings, which are also considered as independent features and also further develop the invention independently of the detailed embodiment described above by way of example.

According to the invention, the flap is hingedly connected by means of coupling elements with the side wall. Here, the coupling elements are hinged on the one hand by means of side wall joints with the side wall itself and on the other hand by means of flap joints with the flap, so that the pivotal connection between the flap and side wall takes place by interposition of these coupling elements, which facilitates handling when opening and closing the flap. In addition, according to the invention at least one positive guide for the flap provided such that it accomplishes a translational flap movement during pivoting of the flap by means of the coupling elements, advantageously in the plane of the flap itself, whereby the flap when closing the flap opening due to the forced upward is moved in the direction of the upper edge and thus up the side wall.

According to an advantageous embodiment of the invention, the positive guidance of the flap for a translational flap movement is formed by at least one ramp, which is arranged on the side wall in the region of the flap opening or the flap.

Conveniently, the flap, the coupling element or the side wall on at least one guide groove, which is provided for the translational flap movement and cooperates with one of the two joints of the coupling element, either with the joint, which the coupling member with the flap, or the joint which Coupling member with the side wall, articulated connects.

The advantage of the measure according to the invention is that, so to speak automatically with the folding up or swiveling the flap to transfer them into the closed position, in which it closes the flap opening in the side wall, a lifting movement is accomplished, which makes it possible that at the Flap trained locking element in a complementary locking element on the side wall is engageable to lock the flap in the closed position. As a result of forced operation, this is done automatically with the folding up of the flap, whereby the flap undergoes a lifting movement in the direction of the upper edge of the side wall and thus engages behind when engaging in the closed position a corresponding locking element on the side wall and thus the flap against the side wall can be locked. To open only needs the flap to be raised and can then easily be folded down again. This considerably simplifies the handling of such large load carriers during loading and emptying of the goods.

In an expedient development of the invention, the positive guidance is arranged in each case on both lateral edges of the flap opening and the two edges of the flap. This results in a safe opening and closing of the flap, since the flap is guided, so to speak without jamming during the closing process. In an advantageously simple embodiment, in each case a first ramp is provided at the lateral edges of the flap opening of the side wall, which cooperates with a first projection on both lateral flap edges, which is preferably formed like a hook. As a result, a simple positive guidance is accomplished, since only a ramp must be provided, which can be easily designed on the lateral edges of the flap opening and allows the lifting movement in a simple manner. Of course, the reverse arrangement is possible, that is, the reverse arrangement of run-up ramp and cooperating projections on the flap or at the lateral edges of the flap opening.

In a further advantageous embodiment of the invention, which is very advantageous especially for narrow side walls, a respective second ramp is provided at the lateral edges of the flap opening or at the lateral edges of the flap in accordance with a cooperating projection. In this case, the first and second Auflauframpe cooperate insofar as when the flap runs up the first Auflauframpe and is at the upper end of the ramp, in a further closing of the flap in the closed position of the corresponding second projection, the second Auflauframpe runs and thus, so to speak a doubling of the lifting movement with a simple structure is made possible. Also, a kinematically reverse arrangement ramp and projection is possible accordingly.

In the case of second ramps, it is expedient to arrange them offset in height in the direction of the upper edge of the side wall to the first ramp and the cooperating projection.

In a particularly advantageous embodiment of the invention, the ramps are designed so that the flaps fall by gravity or by suitable spring bias down when the ramps are overrun. This applies both in embodiments in a positive guidance as well as in embodiments with two forced guides, which are each here preferably formed by inclined ramps.

Since expediently the projections cooperating with the ramp surfaces are formed as locking elements, preferably formed by hook-like projections, results from the lowering of the flap after passing over the ramp an automatic locking of the flaps in the closed position by the particular hook-like projections engage behind the ramps. It is expedient to use the ramps as locking elements, wherein in Appropriate training, the ramps can also be provided with an undercut in the form of grooves for the locking intervention, if necessary.

In connection with the ramp-like training or forced operation, it is expedient to provide springs which are biased when closing the flap, depending on the orientation of the biasing force by appropriate training and / or arrangement of the springs secured the closed position or swinging out the flap in the open position can be relieved.

The coupling elements and the joints of the coupling elements can be made very simple, since two hinge pins are expediently provided for the articulated connection, which preferably pass through the coupling element and one of the hinge pin on the flap and the other hinge pin is displaced on the side wall. A flush arrangement can be achieved in that the coupling elements are each received in recesses on the lower flap edge in the closed position of the flap. In this context, it is expedient to provide the guide for the flap, that is to say the translatory guide, in the form of grooves in the lateral surfaces of the recesses, with which then the corresponding joint or hinge pin of the coupling element cooperates. If necessary, the translational guide can also be provided correspondingly in the coupling element itself or on the side wall.

It is advantageous to provide a stop tongue on the flap on the inside, so that a forced coupling of the flap with the coupling element or the coupling elements can be ensured. This has the advantage that, with the swiveling up of the flap, it can not be swung over, but during the upper pivoting movement the flap remains aligned with the coupling element.

As already stated above, the ramp can be formed at different positions, in particular of the side wall, in the region of the flap opening. In particular, but not exclusively in connection with large load carriers, which may be provided with a lid for closing the frontal opening of the large load carrier, it is advantageous, the Verras- tion of the flap in the closed position from the upper end region of the side wall of the large load carrier down towards the lower edge to relocate the flap opening. Incidentally, this is also advantageous in connection with the ramp for initiating the translational flap movement when closing the flap. In appropriate training, it is within the scope of the invention. tion expedient to arrange or form the locking or latching to the lower flap edge, especially on both longitudinal sides of the flap. Such an arrangement is also very advantageous for the ramp, in particular in connection with the displacement of the latch in a lower region of the flap.

Finally, it is advantageous in the context of the invention that at least one downwardly directed extension is provided in particular at the lower flap edge on the outwardly directed side, which delimits a receiving pocket, in which in the closed position an upwardly directed wall projection of the side wall in the region of the flap opening is. This results in a latching in the closed position of the flap, in which the flap is vertically aligned and in this case the wall projection dips into the receiving pocket of the flap. When folding down the flap can hereby represent a guide for the folding movement of the flap, in particular at the beginning of the flap movement of the wall projection. It may be expedient to form extension and wall projection and thus the receiving pocket as well as the ramp at the bottom of the flap opening or in the region of the lower edge of the flap opening.

In the realization of such, in particular tongue-shaped extension of the flap can be prevented in conjunction with cross-coupling elements in the folded position of the flap a translational flap movement, but must first be closed to close the flap opening the flap from its lowest folding position and only if this blocking lock is canceled, takes place in the wider area of the flap movement a translational adjustment of the flap in the direction of the upper side wall edge.

Advantageously, the flap can be provided with a handle, such as a pivoting handle or with a handle opening.

Hereinafter, embodiments of the invention will be described purely schematically with reference to the drawing. Show in it

1 is a perspective view of a large load carrier,

Fig. 2 is a perspective view of one of the side walls of the large load carrier after

1, which is equipped with a pivoting flap with a modification according to the invention, a purely schematic sectional view through the side wall of FIG. 2 at the level of the flap opening in the side wall, as well as the following figures show only those elements that are important to explain the function and structure of the invention, corresponding views analogous to FIG , which shows the flap when swinging up into the closed position in different pivoting positions. a sectional view of a further alternative embodiment with a sectional plane in the joint formation between the flap and side wall a sectional view in the same functional position as Figure 10, but with a slightly offset sectional plane to represent the coupling members a functional position of the flap in the raised state relative to Figure 11 a functional position of the flap in the folded plane in the sectional plane of Figure 10 is an analogous view of the functional position of Figure 13, but in the sectional plane of Figure 11 is a functional position with a further downwardly directed folding position in the sectional plane of Figure 11 and 14 is a sectional view of the embodiment with fully folded down flap , again in the sectional plane analogous to Figure 11 is a modified design of a flap in a side wall with two flap joints and a representation of the side wall of Figure 17 with completely herabg Flapped flap or opening position of the side wall. Fig. 1 shows a large load carrier according to the invention, the four circumferentially arranged side walls 2, 4, 6 and 8, wherein the side walls hingedly hinged to a bottom 10 and at least one side wall has a closing flap 12 which on the corresponding side wall with her lower flap edge 14 is articulated.

The floor has conventional support legs that define between them engagement openings for lifting devices, such as forklifts of forklifts. The large load carrier is hereby made of plastic.

Fig. 2 shows the side wall 2 with other elements in a dissolved representation. By way of example only, but in no way limiting, the flap at the lower flap edge 14 on three recesses 16 which serve to receive in turn three coupling elements 18. The flap 12 is in this case articulated to the three (non-limiting) coupling elements 18, by means of hinge pins 20 so that a total of three flap hinges are formed by the hinge pins 20 on the one hand pass through the respective coupling elements 18 and on the other hand with their ends in each of the Coupling elements 18 receiving flap recesses 16 are displaced.

At the opposite end, the coupling elements 18 are again preferably connected via hinge pins 22 to the lower edge 24 of the flap opening 26, for which purpose corresponding extensions 30 are formed on the lower edge 24 of the flap opening 26, in which the ends of the hinge pins 22 are relocated.

As a result, the flap 12 is pivotally connected via the coupling elements 18 with the side wall 2, namely a flap joint with the corresponding coupling element and with the threaded bolt 22 with the side wall via the respective coupling element. Due to the interposition of the coupling members which connect the flap 12 with the side wall via two joints, there is a simplified pivoting of the flap relative to the associated side wall.

Fig. 3 shows a purely schematically held sectional view through the side wall 2 in the region of the flap opening 26, wherein the flap 12 is in the folded down position in which the flap opening 26 is fully open. According to the illustration in FIG. 3, the coupling element 18 shown in the drawing is in a horizontal position, that is to say perpendicular to the plane of the side wall 2, which, however, is not mandatory. The flap 12 is Here, in this downwardly pivoted folding position substantially parallel to the side wall. 2

Conveniently, the hinge pin 20 of the flap joint is received translationally in a guide groove 28 of the flap. Here, Fig. 3 shows only one coupling element and only one guide groove, wherein expediently, however, the guide grooves 28 are formed on the two side edges of the coupling elements 18 each receiving recesses 16, which schematically in Fig. 2 respectively on the left side of the recess 16th is shown. The guide groove 28 expediently extends in the plane of the side wall 12 and allows a translational movement of the flap 12 relative to the hinge pin 20. In the illustrated embodiment, the other hinge pin 22 of the pivot hinge joint is hinged in the extensions 30 in corresponding openings at the lower edge 24 of the opening 26th stored, that is pivotable, but not translationally displaced. Alternatively, for example, the coupling element could each be provided with a corresponding guide groove, in which case the hinge pin 20 could then move translationally in the coupling element. Alternatively, corresponding guide grooves would only be possible in the extensions. However, the embodiment shown in the figures is preferred, in which the guide grooves for the translational movement of the flap 12 are formed on the flap side.

Fig. 4 shows the flap after pivoting about 90 °, wherein the flap in this case in the horizontal direction, that is vertical to the plane of the side wall 2, is located. In an expedient embodiment, stop tabs 32 formed on the inner side of the flap on the inner side of the flap 12 engage over the coupling elements, as can be seen in FIG. 4. This prevents over pivoting of the flap joint during pivoting up of the flap 12, but on further upward pivoting of the flap 12 from the position shown in Fig. 4 upward the flap 12 with the coupling element 18 in Fig. 4 apparent position or position carried.

Fig. 5 shows a further intermediate position during the folding up of the flap 12, wherein with the further pivoting of the flap 12, the flap is translationally displaced in the direction of the coupling element 18 and slides down, which is apparent from the fact that in Fig. 5 of Joint pin 20 of the flap-side joint is in the upper region of the guide groove 28 (see also arrow information in this figure). Very advantageous is, what is clear from Fig. 6, a positive guide for the flap 12, which at the same time accomplishes a translational flap movement in the plane of the flap during pivoting of the flap, so that the flap 12 upwards towards the upper edge of the side wall is moved. In the illustrated embodiment, a ramp 34 is provided as a positive guide in this case, which has a sloping wall extending upward from the outer surface of the side wall 2 to the inner surface of the side wall 2 as a ramp surface, which is designated by 36. In the exemplary embodiment shown, a ramp 34 is provided or formed on the flap opening 26 laterally at edges 38 and 40 (see FIG.

Further, the positive guide in the illustrated embodiment, the flap side comprises a preferably downwardly directed hook-like projection 42, which, as shown in FIG. 6, in this upwardly pivoted position shown in Fig. 6, in which, for example, the flap approximately at an angle of 6 ° to vertical side wall, runs on the inclined surface 36 of the ramp 34. With further pivoting of the flap 12 in the direction of the side wall 2 of the hook-like projection 42 runs on the ramp 34, so that the flap 12 is raised upward, Fig. 7 shows a pivot position of the flap very close to the vertical position of the side wall. In this position, the hook-like projection 42 is located at the upper end of the inclined surface 36 of the ramp 34. Also, a kinematic reversal of the arrangement of ramp and projection is possible.

In a further expedient embodiment, but again not necessarily, a second forced operation is provided which has a second ramp 44 with an inclined surface 46, wherein the inclined surface also extends obliquely upward from the outside to the inside. The ramp 44 is in this case undercut on the inside of the side wall, wherein the undercut in the manner of a groove by the reference numeral 48 is illustrated. Here, the ratios are even more clearly in Fig. 7 due to the enlarged representation of the upper portion of the flap 12 shown on the left.

Further, the forced guidance on the side of the flap 12 at the lateral flap edge on a second turn hook-like projection 50 which is as well as the projection 42 directed downward. As is apparent from Fig. 7, running in this pivotal position of the flap 12 of the second projection 50 straight on the inclined surface 46 of the second ramp 44 and runs on further pivoting of the flap 12 on the slope upwards, so that the flap 12 through the second inclined surface 46 is further raised until finally the position shown in Fig. 9 is reached, in which the projection 50 of the ramp 44 has overflowed and engages with its outwardly directed nose or hook 52 below the inclined surface of the ramp or engages, whereby the Flap 12 in this closed position in which the flap 12 closes the flap opening 26 is locked. 9, the flap 12 has fallen translationally down, wherein, as also shown in Fig. 9, in this position, the first hook-shaped projection 42, the first ramp 34 engages behind and thus the flap 12 is locked in this position , By raising the flap 12 upwards, the flap 12 can be unlocked by the corresponding projections in the case of the embodiment with both ramps are raised accordingly further up, so that pivoting the flap 12 outwardly into the position shown in FIG. 3 possible is.

Conveniently, a spring bias for the flap 12 may be provided in the closed position, which is explained purely by way of example with reference to the drawings. In the exemplary embodiment described here in more detail by way of example, in each case a spring 54 is provided on both the flap opening 26 laterally delimiting edges 38, 40 of the side wall, which is expediently clipped into the wall. Depending on the design of the spring 54, this can be stretched when engaging the flap 12 in the closed position vertically upwards, so that there is a bias down. As a result, a secure closure seat of the flap 12 is ensured in the side wall 2. To lift the flap 12, it is then necessary to pull the flap 12 vertically upwards against the biasing force of the spring 54, in order to then be able to pivot it.

In an alternative embodiment, with the engagement of the flap 12 in the closed position to lock the flap opening 26, the spring can also be pressed horizontally in the direction of the flap interior with the result that when the flap 12 is pulled up to unlock, the flap 12th quasi automatically transferred into the folding position, so to speak, since then the spring presses the flap 12 in the open position. The function of the spring and its arrangement are also quite clear from the enlarged view in Fig. 8 can be seen, which also shows the Einclipsteil 56 of the spring.

As is apparent from the above description, in principle, a ramp sufficient to move the flap 12 during the pivoting movement according to translational upward, including the ramp may alternatively be provided, for example, at the bottom of the flap opening 26 or at the bottom of the flap, so that when closing the flap this is moved due to the ramp effect due to an inclined surface upwards. Conveniently, the ramp can also be provided on one or more preferably on both lateral edges of the flap 12, the latter being the case in the described embodiment. In a particularly advantageous manner, in each case two superimposed ramps may be provided, so that by moving over the first ramp an upward movement and finally by passing the second ramp a further upward movement takes place, which is particularly advantageous for narrow side walls and flap walls to a corresponding stroke movement of To create a flap.

FIGS. 10 to 16 show a further exemplary embodiment with basically the same functionality as the preceding exemplary embodiment, but with modifications explained below, the same reference numerals being used for the same or comparable components as in the preceding exemplary embodiment.

In particular, in this embodiment, both the ramp 34 with the inclined surface 36 as well as elements 42 for locking the flap 12 in its vertical position downwards in the direction of the lower flap edge 14 are arranged or formed. FIG. 11 shows the flap 12 in a slightly offset section relative to the sectional plane according to FIG. 10, wherein the flap is in the same functional position, ie in a vertical position in alignment with the side wall 2. On the side edge of the flap 12, in turn, the guide groove 28 for the translational guidance of the flap 12, again preferably designed as a slot, shown. FIG. 13 shows the flap in an inclined position, in which position the projection 42 runs over the ramp 34. FIG. 14 shows the same functional position as FIG. 13, but in a sectional plane according to FIG. 11, so that the guidance of the flap-side hinge pin 20 in the oblong hole 28 can be seen. figure

15 finally shows a position of the flap 12 near the fully folded down position, wherein the hinge pin 20 is in the upper region of the guide 28. In the illustration of FIG

16, the flap 12 is fully folded against the side wall, that is, fully folded down.

From the figures 10 to 16 it can be seen that in this embodiment, the flap on the container outside at the lower flap edge has a tongue-like extension 58 which in the apparent from Figure 10 and 11 vertical position of the flap 12 an upward wall projection 60 of the side wall behind attacks. Here, the tongue-like projection 58 defines a receiving pocket 62, as best seen in Figures 13 and 14, in which in the apparent from Figures 10 and 11 position of the upwardly directed wall projection 60 engages directed in the region of the lower flap edge 24 upwards is trained. This results in how From Figures 10 and 11 illustrates a lock for the positioning of the flap 12 in the vertical position, in which position the flap 12 is moved downward.

For clarity, FIG. 12 shows a position in front of the functional position according to FIGS. 10 and 11 with a position of the flap 12, where it is in a vertical position and can translate downward, so that the receiving pocket 62 then projects the wall projection 60 according to FIGS Figures 10 and 11 overlaps.

Figure 13 shows a folding position, wherein the flap 12 is raised and can be folded outwards. The wall projection 60 moves with the further folding down eventually from the receiving pocket 62, as best seen in Figure 14, and the flap 12 then rotates, so to speak, around the wall projection 60 down, which in this case takes place with the interposition of the coupling members 18.

In the position of Figure 16, the flap 12 is completely transferred to the folded-down vertical position, where it is parallel to the outer surface of the side wall in the illustrated embodiment. In this position, a lifting of the flap 12 in the vertical direction is not possible, since this is blocked by the coupling members 18. To open only the flap 12 has to be pivoted up until finally the blocking contact is lifted according to Figure 16 between extension 58 and coupling member 18 and finally with further folding the flap joint is guided in the guide 28 and thus allows movement of the pivoting flap 12 upwards 12, in which the flap 12 can then fall down in the direction of the lower edge of the flap opening 24 and in this position then the locking position according to FIGS. 10 and 11 takes.

Figures 17 and 18 show a slightly modified embodiment in which the flap 12 is articulated via only two flap joints 64 and 66 at the lower edge 24 of the flap opening. FIG. 18 shows the flap 12 in its fully folded-down position for releasing the flap opening 26. Thus, the ramps 34 can also be seen clearly from FIG. Finally, FIG. 17 shows a practicable embodiment of the articulated arrangement of the pivotable side wall 2 via three joint formations in a manner known per se at the bottom of the large container.

Claims

claims

1. Large load carrier with peripherally arranged side walls (2, 4, 6, 8), wherein at least one of the side walls (2) has a flap (12) which closes a flap opening (26) in the side wall (2) in the closed position and by pivoting can be converted into an open position, in which the flap (12) is folded from the outside against the side wall (2),

characterized in that

the flap (12) is hingedly connected to the side wall (2) by means of coupling elements (18), the coupling elements (18) being articulated to the flap by means of side wall hinges and hinged to the flap by means of flap hinges, and at least one positive guide (28 , 34, 42) for the flap (12) is provided, which at the same time accomplishes a translatory flap movement in the plane of the flap during pivoting of the flap (12), such that the flap (12) when closing the flap opening (26) upwards in Direction of the upper edge of the side wall (2) is moved.

2. Large load carrier according to claim 1,

characterized in that

the positive guidance of the flap (12) is formed by at least one ramp (34) arranged on the side wall (2) or the flap (12).

3. Large load carrier according to claim 1 or 2,

characterized in that

the flap (12), the coupling element (18) or the side wall (2) has at least one guide groove (28) for the translatory flap movement, which cooperates with one of the joints of the coupling elements (18).

4. Large load carrier according to one of the preceding claims,

characterized in that

the forced guidance is arranged in each case on both lateral edges (38, 40) of the flap opening (26) and the flap (12).

5. Large load carrier according to claim 4,

characterized in that at the lateral edges (48, 40) of the flap opening (26) in each case a first ramp (34) is provided which cooperates with a preferably hook-like first projection (42) on both lateral flap edges or kinematically reversed arrangement.

6. Large load carrier according to claim 5,

characterized in that

on the lateral edges (38, 40) of the flap opening (26) in each case a second ramp (44) is provided which cooperates with a preferably hook-like second projection (50) on both side flap edges or reverse arrangement of these components.

7. Large load carrier according to claim 6,

characterized in that

the second Aufiauframpe (44) and thus cooperating second projection (50) in the direction of the upper edge of the side wall (2) offset in height above the first Aufiauframpe (34) and the cooperating first projection (42) is arranged.

8. Large load carrier according to one of the preceding claims,

characterized in that

the ramp or ramps are each designed so that after ramp over the flap (12) due to gravity and / or spring bias moves in the translational direction of the bottom (10) of the side wall.

9. Large load carrier according to claim 8,

characterized in that

the second ramp (44) is configured such that the cooperating second projection (50) runs onto the second ramp as soon as the first projection (42) reaches the top of the first ramp (34) and the flap (12) descends moves as soon as the second projection (50) in each case overruns the corresponding ramp (44), wherein preferably in each case the second ramp (44) is in turn formed with an undercut (48) in the form of a groove, which the second hook-like projection (50) , preferably with a nose (52) engages behind each.

10. Large load carrier according to one of the preceding claims,

characterized in that on the flap opening limiting lateral edges (38, 40) of the side wall (2) each have a spring (54) is arranged, which is biased with closing the flap (12), such that the flap (12) is held in the locked position.

11. Large load carrier according to one of the preceding claims,

characterized in that

the ramps (34, 44) are each formed by inclined surfaces (36, 46) which preferably extend obliquely upward from the outer wall of the side wall in the direction of the side wall inner surface towards the upper edge of the side wall (2).

12. Large load carrier according to one of the preceding claims,

characterized in that

the joints of the coupling elements are each formed by hinge pins (20, 22).

13. Large load carrier according to one of the preceding claims,

characterized in that

the coupling elements (18) are respectively received in recesses (16) at the flap edge (14) located in the closed position of the flap.

14. Large load carrier according to claim 12,

characterized in that

the hinge pins (20, 22) of the coupling elements (18) in each case engage in guide grooves (28) for the translatory flap movement, which are preferably formed in lateral surfaces of the recesses (16).

15. Large load carrier according to one of the preceding claims,

characterized in that

at the inner surface of the flap (12) in the closed position in the region of the coupling elements (18) each projecting a stop tongue (32) which engages over the corresponding coupling element (18) during pivoting of the flap, such that an over pivoting of the coupling elements (18) the flap (12) is locked when pivoting the flap.