EP3275797A1 - Hinge assembly and container with such a hinge assembly - Google Patents

Abstract

A hinge arrangement (20) is disclosed between two wall sections (4, 6) of a container (2) which can be pivoted relative to one another, with a hinge pin (28) provided on a first wall section (6) and a hinge pin receptacle (2) provided on a second wall section (4). 30), in which the hinge pin (28) positively caught, rotatable and translationally movable to allow a parallel displacement of the axis of rotation of the hinge pin. According to the invention, a guide contour pair (26) is provided on the wall sections (4, 6), which is in contact with one another, is formed separately from the hinge pin (28) and the hinge bolt receptacle (30) and via which one, in particular simultaneous, rotational and translational movement of the Hinge pin (28) in the hinge pin receptacle (30) is defined.

Description

The present invention relates to a hinge assembly between two relatively pivotable wall sections of a container according to the preamble of claim 1 and a container with such a hinge assembly according to the preamble of the independent claim.

Various containers with hinged side walls are known from the prior art, wherein the side walls for transport or storage of goods can be brought into a vertical or upright position and can be folded inwards or outwards, when the container is transported or stored in the empty state to save space shall be. Such foldable containers also include so-called intermediate bulk containers (IBC), which are generally used for the transport or storage of liquid or free-flowing materials and are designed larger-volume. Against this background, correspondingly higher strength requirements are placed on such containers.

In order to allow the greatest possible power transmission, the footprint of an erected side wall on a lower side wall portion or floor should be as wide as possible. In order to enable the pivoting of the side walls, a hinge pin is usually formed on the lower edge of the hinged side wall, which is rotatably received in a corresponding hinge pin receptacle of the side wall or bottom portion. In order to allow a folding of the side wall inwardly or outwardly, the inner or outer edge of the lower side wall portion is usually provided with a radius so that the upper side wall can perform the pivoting movement. However, such a radius reduces the width of the footprint in the erected state of the side wall, which is accompanied by a weakening of the strength of the container.

In addition to fixed hinge axes and hinge axes are known, such. B. off EP 2 563 678 A1 or EP 2 389 321 A1 , in which the hinge pins have a vertical degree of translational freedom, in order not to have to pay particular attention to folding sequence when the side walls fold over each other and the folded side walls can lie flat on one another due to the non-fixed hinge axis. The disadvantage of such a vertically movable hinge joint lies in the fact that the side walls are not coupled in the erected state directly to the ground, but are held only on the adjacent side walls. This is in need of improvement in terms of strength requirements. Another disadvantage of a freely movable hinge axis is that with multiple hinge connections, the (height) position of the hinge pin can be different and thereby the mutually pivoting hinge parts like to jam and possibly break. The pamphlets DE 235 25 33 A1 . DE 21 45 550 C3 . US 8,627,973 B2 and US 4,163,495 A are other examples of containers with lids or walls, which are articulated via translationally displaceable hinge axes.

Against this background, the object of the present invention is to provide a container with hinged side walls or side wall sections, which offers improved power transmission of the side walls and a higher strength of the container as a whole. In particular, the object is also to provide a corresponding hinge arrangement between two mutually pivotable or foldable side wall sections.

This object is achieved with respect to the hinge assembly by the features of claim 1 and with respect to the container by the features of the independent claim. Advantageous developments are each objects of dependent claims.

A hinge arrangement according to the invention between two relatively pivotable wall sections of a container, such as For example, a side wall and a bottom portion or between two side wall portions, has a provided on a first wall portion hinge pin and provided on a second wall portion hinge pin receptacle. In the hinge pin receptacle of the hinge pin is positively caught, ie that hinge pin and hinge pin receptacle during normal use not separate from each other and can be solved if necessary for repair or replacement of each other. Further, the hinge pin is rotatably received in the hinge pin receptacle and so translationally movable to allow a parallel displacement of the axis of rotation of the hinge pin. According to the invention, a guide contour pair is provided on the wall sections, which are in contact with one another or slide against one another during the pivoting or folding movement of the wall sections and are formed separately from the hinge pin and the hinge bolt receptacle. In particular, the guide contour pair is formed in the longitudinal direction of the wall sections or in the extension direction of the wall sections separately from the hinge pin and the hinge pin receptacle or is an imaginary line connecting the guide contour pair and the hinge pin / hinge pin receptacle substantially parallel to the longitudinal direction or to the extension direction of the wall sections. About this guide contour pair, the rotational and translational movement of the hinge pin is defined in the hinge pin receptacle. Further, the guide contour according to the invention is designed such that when pivoting the wall sections of the unfolded position in the folded position defined by the hinge pin rotation axis initially removed from a starting position and then moves back into this back. This ensures that in the hinge assembly according to the invention, the two end positions, ie on the one hand in the erected state and in the folded state, the end positions correspond, which one has at a hinge with a fixed axis of rotation. Against this background, the hinge according to the invention has no effect on the remaining dimensions of the container, so that existing container concepts can be provided without great adjustments with a hinge assembly according to the invention.

The advantage of the hinge assembly according to the invention lies in particular in the fact that the interaction of hinge pin and hinge pin receptacle fundamentally allows a (simultaneous) rotational and translational movement, and on the other hand defines the (simultaneous) rotational and translational movement of the hinge pin in the hinge pin receptacle during the pivoting movement via the guide contour pair is specified. This prevents that hinge pin and hinge pin receptacle do not get caught or jammed and the folding and straightening of the side wall can be done easily and without special attention by the user, since the guide contour dictates the movement curve. Due to the translational degree of freedom of the hinge pin or the hinge axis, it is possible to dispense with a chamfering or rounding of Wandungsabschnittskanten while still allowing on the one hand a flat support of the side wall in the erected state and on the other hand, a pivoting movement per se. Thus, the footprint can be increased over solutions with fixed hinge axes and thereby improve the strength and power transmission of the container.

According to one aspect of the invention, the wall sections can be transferred from an unfolded position to a folded position and vice versa. This allows a space-saving storage. The first wall section may be a side wall or a first side wall section of a container. The second wall portion may be a raised, substantially vertically extending edge portion of a floor or a second side wall portion hingedly connected to the first side wall portion. In the unfolded position, the first wall section and the second wall section and opposite end edges of the wall sections are flush with one another. In the folded-over position, the first wall section and the second wall section are aligned substantially perpendicular to one another or the folded-over side wall is aligned substantially parallel to the floor.

According to one aspect of the invention, the hinge pin can be translationally movable in the hinge pin receptacle obliquely to the wall plane of the second wall section. In particular, the translational movement in a directional angle range of 35 ° to 45 °, preferably 45 ° to the wall plane of the second wall section take place, preferably the movement can be carried out in a container with inwardly folding wall sections to an inside of the container and in a container with outward hinged side walls to the outside of the container. In other words, the translational degree of freedom of the hinge pin in the hinge pin receptacle may be configured such that the hinge pin or hinge axis is movable toward the edge of the second (lower or hinge receiving) wall portion about which the first wall portion is pivoted. By this oblique or diagonal movement of the hinge axis, the distance to the inner edge of the second wall portion (when folding inwards) or the distance to the outer edge of the second wall portion (when flapping outward) can be reduced, which is why a chamfer or rounding of the corresponding edge is not necessary is.

According to one aspect of the invention, the guide contour pair may have a guide projection formed on the first wall section and a guide groove formed on the second wall section, in which the guide projection engages and slides along a guide contour formed on the groove base. The guide projection may be integrally formed on the first wall portion. This can in particular also be rounded. Furthermore, guide projection and guide groove can also be formed in each case on the other wall section. This solution represents an easy-to-manufacture and high-use solution in use.

While guide projection and guide groove permits a rotational movement of the wall sections about the (parallel displaceable) axis of rotation and a translational movement perpendicular to the axis of rotation Guide projection and guide to be coordinated so that they form an axial positive fit, so that the hinge joint consisting of hinge pin and hinge pin recording forces that are introduced in the axial direction, not alone record or withstand, but by the positive connection between the guide contour pair completely or at least partially taken over.

In order to make the guide as low-friction as possible, the guide projection may have the shape of a hemisphere or a circular cylinder segment or disc, whereby the smallest possible contact and friction surface is provided.

In one aspect, the guide contour formed on the second wall portion may be a circular cam track superposed with a shaft or ramp. In other words, a circular path with radius R is provided with a shaft or ramp, so that when moving away the guide contour of the distance to the center of the circular path initially (steadily) and then (steadily) decreases.

According to one aspect, the hinge pin and the hinge pin receptacle, in particular their cross-sectional shapes, can be matched to one another in such a way that they have no translational degree of freedom in the unfolded position in the wall plane (usually in the vertical direction), but only obliquely or at most perpendicular thereto. This ensures that in the erected state there is no essential play between the wall sections in the wall plane, so that the two wall sections are fixedly coupled together in the erected state via the hinge joint and a force transmission between the two wall sections is made possible.

According to one aspect, the hinge pin and the hinge pin receptacle, in particular their cross-sectional shapes, can be matched to one another in such a way that they do not rotate in the unfolded position without prior translational displacement of the axis of rotation Have degree of freedom. Thus, torques are absorbed in the erected state by the hinge joint. The desired rotational movement for folding over the wall sections takes place only after a previous translational displacement of the axis of rotation. As a result, a foldability of the wall sections is ensured without having to forego a coupling or power transmission in the erected state.

Another aspect of the invention relates to a container with two relatively pivotable wall sections and a hinge arrangement according to one of the preceding aspects. One of the two wall sections may be a container bottom, on which a side wall is leaned over the hinge arrangement. Preferably, two opposing side walls may be provided with a hinge arrangement according to the invention. In one aspect, all four side walls of a hinged container may be provided with a hinge assembly according to the invention. The container according to the invention is characterized in that the contact surface or footprint of the two mutually pivotable wall sections can be made as wide as possible in the erected state, since due to the rotation and translational movement carried out during pivoting on a flattening, chamfering or rounding of the wall sections can be omitted ,

Otherwise, the container has substantially all the advantages described above in detail with the various aspects of the hinge assembly.

According to one aspect of the invention, in an unfolded position of the two wall sections, these are aligned with each other and lie vertically one above the other, wherein the guide contour pair is formed such that the upper wall section remains by itself in the unfolded vertical position due to the weight force acting thereon and for folding the upper wall section this due to the thus defined the guide contour pair rotation and translation movement of the Hinge pin in the Scharbolzenaufnahme against the weight, in particular, is raised inwards and upwards. This has the advantage that, without the intervention of a user and without overcoming a predetermined force, the wall section or side wall is not brought out of the erected position. The side wall is thus held in the vertical position when using the hinge according to the invention. When folding, the side wall or wall portion must overcome the resistance to the translational displacement against the weight of the wall portion.

• Fig. 1 eine perspektivische Ansicht eines Behälters gemäß einer bevorzugten Ausführungsform der Erfindung im aufgeklappten Zustand;
• Fig. 2 eine perspektivische Ansicht des Behälters im aufgeklappten Zustand ohne Deckel;
• Fig. 3 eine perspektivische Ansicht des Behälters im zusammengeklappten Zustand ohne Deckel;
• Fig. 4 eine perspektivische Ansicht des Behälters im zusammengeklappten Zustand mit Deckel;
• Fig. 5 eine perspektivische Ansicht zweier relativ zueinander verschwenkbaren Wandungsabschnitten des Behälters (2) mit zwei Scharnieranordnungen gemäß einer bevorzugten Ausführungsform der Erfindung;
• Fig. 6 eine perspektivische Ansicht einer Scharnieranordnung eines der beiden Wandungsabschnitten (Boden) des Behälters;
• Fig. 7 eine perspektivische Ansicht der Scharnieranordnung des anderen der beiden Wandungsabschnitten (Seitenwand) des Behälters;
• Fign. 8A bis 8C Querschnittsansichten eines Führungskonturenpaars der Scharnieranordnung in verschiedenen Schwenkstellungen, und
• Fign. 9A bis 9C Querschnittsansichten eines Scharniers der Scharnieranordnung in verschiedenen Schwenkstellungen.

The invention will be described in more detail below with reference to the attached figures. Show it:

• Fig. 1 a perspective view of a container according to a preferred embodiment of the invention in the unfolded state;
• Fig. 2 a perspective view of the container in the unfolded state without a lid;
• Fig. 3 a perspective view of the container in the folded state without a lid;
• Fig. 4 a perspective view of the container in the folded state with lid;
• Fig. 5 a perspective view of two relatively pivotable wall sections of the container (2) with two hinge assemblies according to a preferred embodiment of the invention;
• Fig. 6 a perspective view of a hinge assembly of one of the two wall sections (bottom) of the container;
• Fig. 7 a perspective view of the hinge assembly of the other of the two wall sections (side wall) of the container;
• FIGS. 8A to 8C Cross-sectional views of a guide contour pair of the hinge assembly in different pivot positions, and
• FIGS. 9A to 9C Cross-sectional views of a hinge of the hinge assembly in different pivot positions.

Detailed description of preferred embodiments

FIG. 1 shows a container 2, more precisely an intermediate bulk container (IBC), which is made of plastic. The container has a bottom 4, four side walls 6 and a lid 8. The bottom 4 is pallet-shaped and has stacking feet or skids 10 to lift the container 2 with a truck, transport and park. In order to be able to stack a plurality of containers 2 one above the other, the lid 8 has a plurality of stacking projections 12 which engage in corresponding stacking receptacles 14 on the bottom 4 or the stacking feet 10 of a structurally identical or compatible container 2 and thus form-fittingly intermesh the stacked containers 2 against lateral slippage to back up.

The FIG. 2 shows the container 2 with the lid removed 8. As from the FIG. 2 can be seen, the side walls 6 at their upper outer end portions a recess 16 for flush receiving the lid 8. In order to be able to transport or store the container 2 space-saving in the empty state, the side walls 6 can all be folded inwards and one above the other (see FIG. 3 ). In the in the FIG. 2 erected state, the side walls 6 are coupled at their side edges respectively with the two adjacent side walls 6 and locked. To unlock the side walls corresponding locking elements 18 must be pressed. Overall, four locking elements 18 are provided, which on two opposite side walls 6-1 and 6-3 in the upper edge region, more precisely are formed in the region of the recess 16, so that when the lid 8 is placed on the container 2, it is covered by the cover 8 and the locking elements 18 can not be accidentally operated.

When folding the side walls 6, the two opposite side walls 6-1 and 6-3 are first folded inwards and one above the other and then over the two opposite side walls 6-2 and 6-4. The side walls 6 are hinged in each case via hinge assemblies 20 on the bottom 4. In order to enable a flat as possible or parallel overlapping of the side walls, the pivot axes of the side walls 6-2 and 6-4 can be arranged vertically higher than the hinge axes of the two first inwardly folding side walls 6-1 and 6-3. If, as in the FIG. 3 shown, the side walls 6 are folded inwards and one above the other, then the lid 8 can be placed over it again. For this, the bottom 4 at the corner edges corresponding recesses 22, so that the cover 8, the side walls 6 and in particular the hinge assemblies 20 covers and also protects against external influences. Thus, the container 2, as in the FIG. 4 shown, stored together with cover 8 to save space.

Hereinafter, the hinge assembly 20 according to the invention will be described with reference to a model. The FIG. 5 shows two mutually hinged wall sections, which should correspond to the side wall 6 and the bottom 4. The articulation is accomplished via two hinge assemblies 20, each hinge assembly having a hinge 24 and a pair of guide contours 26, respectively. Via the hinge 24, the side wall 6 is coupled to the bottom 4. About the guide or the guide contour pair 26, the pivotal movement of the side wall 6 is defined relative to the bottom 4 or predetermined.

The hinge 24 is replaced by a hinge pin 28, which on the side wall 6, more precisely at its lower side in the erected state or edge is provided or integrally formed, and a hinge pin receptacle 30 which is formed on an upwardly drawn edge portion 32 of the bottom 4 is formed. The hinge pin 28 is positively secured in the hinge pin receptacle 30 via locking lugs 34. The locking lugs 34 have chamfers 35 to facilitate the initial insertion or snapping of the hinge pin 28 in the hinge pin receptacle 30.

In the erected state is a lower side surface 36 of the side wall 6 on a Aufstands- or support surface 37 on the upper side of the upwardly drawn edge portion 32 on a flat surface.

Immediately (in the axial direction) next to the hinge pin receptacle 30, d. H. separate from the hinge pin receptacle 30, a guide groove 38 is provided with a guide groove 40 formed in the groove bottom at the bottom 4. This guide groove 38 or guide contour 40 cooperates with a correspondingly formed on the side wall 6 adjacent to the hinge pin 28 (and separately thereto) guide projection 42 with a guide contour 44. More specifically, when the side wall 6 with the hinge pin 28 is inserted into the hinge pin receptacle 30, the guide projection 42 engages the guide groove 38, with the guide contours 40 and 44 contacting and sliding against each other when the side wall 6 is pivoted relative to the bottom 4.

The FIGS. 8A to 8C show sections through the formed from the guide contours 40 and 44 guide contour pair 26 in different pivoting positions. The Figure 8A shows the side wall 6 in the unfolded or upright or vertically oriented position. The FIG. 8C shows the side wall 6 in 90 ° inwardly folded state and the FIG. 8B shows the side wall 6 in an intermediate position between the unfolded and folded position.

The guide contour 40 in the guide groove 38 is wave-shaped, that is, that the guide contour 40 between the two in the FIGS. 8A and 8C shown end positions no circular path, but has a superimposed with a wave circular path. When the side wall 6 is folded over or erected, the side wall 6 due to the interaction of the guide contour pair 26 performs no purely rotational movement, but a combined (simultaneous) rotational and translational movement. To enable this combined rotational and translational movement, the hinge 24 is formed accordingly.

Over the length of the guide groove 38, the pivoting range of the side wall 6 is further limited, so that the two end positions ( Figure 8A and 8C ) are defined by the interaction of guide projection 42 and guide groove 38. In addition, the guide projection 42 is received in the guide groove 38 without significant axial play, so that the guide groove 38 and the guide projection 42 form an axial positive engagement and therefore absorb axial loads on the side wall 6 and thereby relieve the hinge 24.

The FIGS. 9A to 9C show cross sections of the hinge 24 in different pivot positions. The Figure 9A shows the side wall 6 in the erected or unfolded state and the FIG. 9C in folded state inside. In the FIG. 9B shown intermediate pivoting position immediately after the beginning of the pivoting movement inwardly substantially corresponds to the pivoting position of the FIG. 8B , Like from the FIGS. 9A to 9C can be seen, the hinge pin 28 is received in the hinge pin receptacle 30 rotatable and translationally movable. Therefore, when the guide projection 42 on the side wall 6 slides over the highest point of the shaft 46 of the guide contour 40, the axis of rotation defined by the hinge pin 28 is shifted from a position A1 to a position A2 (parallel) and then shifted back so that the axis of rotation of the hinge pin 28 in the folded position ( FIG. 9C ) is again in position A1. The translation movement between positions A1 and A2 is at an angle to the upwardly drawn edge portion 32 of the bottom 4 or at an angle of approximately 45 ° with respect to the vertical axis or the wall plane, more precisely inwards and upwards or in the direction of an inner edge 47 of the upwardly drawn edge portion 32nd on which the hinge bolt receptacle 30 is formed.

From the FIGS. 9A to 9C Furthermore, it can be seen that the hinge pin 28 has no circular cross-section, but at least at a portion of a corner or edge 48, which with a corresponding inner edge 47 within the hinge pin receptacle 30 in the erected position (see Figure 9A ) cooperates. The corner 48 located in erected position on the upper and outer side of the hinge pin 28 engages in the erected position also formed on the upper and outer inner side of the hinge pin receptacle 30 inner edge 47. This prevents the side wall 6 in the erected state in can move in the vertical direction. This results in an immediate power transmission or coupling between the bottom 4 and side wall 6. Further, by the interaction of the corner edges 48 and 50 prevents the hinge pin 28 rotates when the hinge axis is in the position A1. In order to initiate the pivoting movement, must therefore as in the FIG. 9B shown, the hinge axis are first translationally inwardly or obliquely moved inward, so that the two corner edges 48 and 50 are disengaged and thus a translational and rotational movement of the hinge pin 28 in the hinge pin receptacle 30 is made possible. Against this background, the side wall 6 and the bottom 4 are coupled in the upright position by the engaging behind and the positive connection between the corner edges 48 and 50 in the vertical direction and in the direction of rotation.

During the pivoting movement of the hinge pin receptacle 30 also translationally movable hinge pin 28 is guided over the guide contour pair 26, so that when pivoting hinge pin 28 and hinge pin receptacle 30 can not jam. However, a significant advantage of the invention lies in the fact that the support surface 37th at the raised edge portion of the bottom 4, on which the side wall 6 rests with its lower side surface 36, can be made very wide in the erected state, since the inner edge 47 on the support surface 37 not at all or only slightly chamfered or rounded, since the lower edge or side surface 36 of the side wall 6 is "lifted" over the inner edge 47 during the rotation and translation movement. Due to the widened support surface 37, the power transmission and the strength of the side walls are improved in the erected state.

In addition, the shaft 46 in the guide contour 44 has the further advantage that - like the Figure 8A is shown - the guide projection 42 during inward pivoting of the side wall 6 must overcome the first vertically extending shaft 46, which is accompanied at the same time with a certain oblique lifting movement of the side wall 6, which is why the side wall 6 tended to tend due to their own weight in the erected position ( Figure 8A ) moved back. Thus, due to the pair of guide contours and gravity, the side wall 6 remains alone in the erected position and does not fold in by itself or without action. In order to fold the side wall 6 inwards, the resistance of the shaft 46 and the weight of the side wall 6 must be overcome.

The present invention has been described with reference to a preferred embodiment. However, the hinge assembly 20 according to the invention consisting of the hinge 24 and the guide contour pair 26 can also be transferred to other hinged containers.

The hinge assembly 20 has been described in connection with a hinge connection between a side wall 6 and the bottom 4. However, the hinge assembly 20 according to the invention can also be provided between other wall sections of a container, for. B. between two superposed side wall sections.

Furthermore, the hinge assembly 20 can also be used in outwardly hinged side walls, in which case the hinge 24 and the guide contour pair 26 must be formed mirror-inverted.

Instead of the shaft 46, a kind of ascending or descending ramp geometry or a differently shaped geometry can be used, as long as it is ensured that the side wall to be folded obliquely inwards above (or obliquely outwardly upwardly foldable side wall) during the pivoting movement to be led.

In the described embodiment, only a central portion of the hinge pin 28 is provided with a non-round cross section or the corner edge 48. Alternatively, the entire hinge pin 38 may be formed according to its axial extent.

Claims (10)

Hinge arrangement (20) between two wall sections (4, 6) of a container (2) which can be pivoted relative to one another, with a hinge pin (28) provided on a first wall section (6) and a hinge pin receptacle (30) provided on a second wall section (4), in which the hinge pin (28) is caught in a form-fitting manner, is rotatable and can be moved translationally in order to allow a parallel displacement of the axis of rotation of the hinge pin,
marked by
a guide contour pair (26) provided on the wall sections (4, 6), in contact with one another and separate from the hinge pin (28) and the hinge pin receptacle (30), via which one, in particular simultaneous, rotational and translational movement of the hinge pin (28) is defined in the hinge pin receptacle (30), wherein
the guide contour pair (26) is designed such that, when the wall sections (4, 6) are pivoted from an unfolded position to a folded position, an axis of rotation defined by the hinge pin (28) is initially removed from a starting position (A1) and then retracted again this moved back. Hinge arrangement (20) according to claim 1, characterized in that the wall sections (4, 6) of the unfolded position in which the first wall portion (6), in particular a side wall of the container (2), and the second wall portion (4) in particular a bottom (4) of the container (2), are aligned substantially perpendicular to each other, in the folded position, in which the first wall portion (6) and the second wall portion (4) are aligned substantially parallel to each other. Hinge assembly (20) according to claim 1 or 2, characterized in that the hinge pin (28) in the hinge pin receptacle (30) obliquely to the wall plane of the second wall portion (4) is translationally movable, in particular in a direction angle range of 35 ° to 55 ° to the wall plane of the second wall portion (4), preferably to an inside of the container (2). Hinge assembly (20) according to any one of the preceding claims, characterized in that the guide contour pair (26) one, in particular rounded, on the first wall portion (6), in particular integrally formed guide projection (42) and one on the second wall portion (4) formed Guiding groove (38), in which the guide projection (42) engages and along a groove formed on the bottom guide contour (40) slides. Hinge arrangement (20) according to claim 4, characterized in that the guide projection (42) and the guide groove (38) cause an axial positive connection between the two wall sections (4, 6). Hinge assembly (20) according to claim 4 or 5, characterized in that the guide projection (42) has the shape of a hemisphere or a circular cylinder segment. Hinge assembly (20) according to any one of the preceding claims, characterized in that on the second wall section (6) formed guide contour (44) has the profile of a with a shaft (46) or ramp superimposed circular cam track. Hinge arrangement (20) according to one of the preceding claims, characterized in that
the hinge pin (28) and the hinge pin receptacle (30), in particular their cross-sectional shapes, are matched to one another such that they have no translational degree of freedom in the unfolded position in the wall plane, but only obliquely or perpendicularly thereto; and or
the hinge pin (28) and the hinge pin receptacle (30), in particular their cross-sectional shapes, are matched to one another in such a way that that these have no rotational degree of freedom in the unfolded position without prior translational displacement of the axis of rotation. Container (2) with at least two mutually pivotable wall sections (4, 6) and a hinge assembly (20) according to any one of the preceding claims. Container (2) according to claim 9, characterized in that in an unfolded position, the two wall sections (4, 6) are aligned with each other and vertically above each other, wherein the guide contour pair (26) is formed such that the upper wall portion (6) due to force acting on it by itself remains in the unfolded vertical position and for folding the upper wall portion (6) of this defined by the guide contour pair (26) rotational and translational movement of the hinge pin (28) in the hinge pin receptacle (30) against the weight, in particular inwards and upwards, is raised.

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