Locking mechanism and container comprising a locking mechanism

Abstract

A locking mechanism (100, 100') for releasably connecting two adjacent side wall elements (12, 14, 14a, 14b, 14c, 16, 18) of a container (1), wherein the locking mechanism (100, 100') comprising: - a first element (110, 110') connectable to a first side wall element, the first element (110, 110') comprising at least one latch (112); - a second element (120) connectable to a second side wall element, and - a third element (130) movably connected to the second element (120), the third element (130) comprising at least one protruding locking element (132), wherein the at least one protruding locking element (132) being configured to releasably connect with the at least one latch (112) to lock the first element (110, 110') with the second element (120) such that movement of the first side wall element relative to the second side wall element is prevented, wherein the at least one protruding locking element (132) is configured to automatically engage behind the latch (112) to lock the first element (110, 110') to the second element (120) when moving the side wall elements from the unlocked to the locked state.

Description

FIELD OF THE INVENTION

[0001] The present invention relates to the field of storage containers, and more specifically to locking mechanisms for storage containers, preferably foldable containers or containers of which a side wall element is able to pivot to allow easier access to the interior of the container.BACKGROUND OF THE INVENTION

[0002] Storage containers are essential in various sectors, including residential, commercial, industrial, automotive, pharmaceutical and logistics where they are used to store, transport, and organize a wide range of items. Such containers come in various shapes and sizes, typically made from materials such as plastic, metal, and cardboard. However, these containers are rigid and do not offer flexibility in terms of storage space when they are loaded with relatively smaller goods, and therefore face considerable limitations in terms of space efficiency and the capacity to being efficiently stacked when not in use. Furthermore, such containers often have a limited accessibility and when larger containers are used and small packages are placed inside the containers, it is often difficult to remove them from the container.

[0003] Several attempts have been made to address these issues through the development of collapsible or foldable storage containers. For example, some designs incorporate hinges and joints that allow the walls of the container to fold inward, reducing the overall volume of the container to a minimum when not in use. Several locking mechanisms exist which will lock the walls of a collapsible or foldable storage containers when the walls are in the extended Likewise, to allow easier access to the interior of these containers, locking mechanisms or Velcro connections have been used. However, such approaches often suffer from drawbacks such as a lack of structural integrity when locking the walls of the storage container and a complexity in design.

[0004] There is thus an unmet need for improved locking mechanisms for containers that overcome the above-mentioned problems.SUMMARY OF THE INVENTION

[0005] The present inventors have developed a locking mechanism for a container that overcomes the above-mentioned problems of containers described in the art.

[0006] Surprisingly, by using three elements which are interconnectable with each other, a locking mechanism for a container is obtained which can be easily connected to any one of the side walls or wall elements of a container. The locking mechanism can be used with containers of any size or type to allow the walls of the container to collapse, pivot around a pivot axis or be removed entirely.

[0007] According to a first aspect there is provided a locking mechanism for releasably connecting two adjacent side wall elements of a container, wherein the locking mechanism comprising: a first element connectable to a first side wall element, the first element comprising at least one latch; a second element connectable to a second side wall element, and a third element movably connected to the second element, the third element comprising at least one protruding locking element, wherein the at least one protruding locking element being configured to releasably connect with the at least one latch to lock the first element with the second element such that movement of the first side wall element relative to the second side wall element is prevented, wherein the at least one protruding locking element is configured to automatically engage behind the latch to lock the first element to the second element when moving the side wall elements from the unlocked to the locked state.

[0008] An another advantage of the locking mechanism is that automatically snaps protruding locking element behind the latch as the side walls move from the unlocked to the locked state, thereby eliminating manual locking steps, speeding assembly, and ensuring reliable closure. This tool-free design (requiring no fasteners, screws, or brackets) simplifies both installation and removal. Furthermore, the snap fit provides feedback, confirming full engagement, while the rigid latch-protrusion interface prevents movement between walls, boosting structural strength.

[0009] In a preferred embodiment, the at least one protruding locking element is configured to remain in a protruded state in both the unlocked and locked state, and is further configured to be pushed inward in the direction of the second element by the latch when transitioning from the unlocked position to the locked position, such that contact between the protruding locking element and the latch causes inward displacement of the protruding locking element.

[0010] In a preferred embodiment, the at least one protruding locking element comprises a chamfered edge configured to make contact with the latch during movement from the unlocked state to the locked state, such that the chamfered edge facilitates inward displacement of the protruding locking element when engaging with the latch.

[0011] In a preferred embodiment, the first element further comprising at least one opening, wherein the second element comprising at least one protrusion, and wherein the at least one protrusion of the second element being configured to be inserted into the at least one opening of the first element when two adjacent side wall elements are moved as to bring the container from the open to the enclosing configuration.

[0012] Having at least one opening in the first element and at least one mating protrusion on the second element will allow the two elements to connect to each other such that movement of the side wall elements to which the first and second elements are connected. The at least one latch and at least one protruding locking element will prevent movement in one direction, while the at least one opening and the at least one protrusion will prevent movement in a direction perpendicular to the first direction, thus effectively locking the first and second element of the locking mechanism and thus the two adjacent side wall elements together.

[0013] In a preferred embodiment, the second element of the locking mechanism comprising at least one slot, the third element comprising at least one spring element, and the at least one spring element is configured to be inserted into the at least one slot such that the third element is movably secured to the second element. Since the protruding locking element is located on the third element, and the third element is movably secured to the second element, the third element is allowed to be moved to and from the latch positioned on the first element. Hence, by operating the third element and moving it away from the latch on the first element, the locking mechanism can be unlocked, allowing the adjacent wall elements

[0014] In a preferred embodiment, the at least one spring element of the third element comprising a locking pin and the at least one slot of the second element comprising a catch to receive the locking pin such that the at least one spring element is fixed within the at least one slot of the second element. In a further embodiment, the at least one spring element is configured to be compressed inside the at least one slot when moving the third element relative to the second element. When the locking pin is fixed within the catch of the slot, the spring element is locked within the slot of the second element, thus making sure that the third element is still moveable with relation to the second element, but is unable to be easily detached and removed from the second element. The ability to move the third element relative to the third element, allows the protruding locking element to be brought into or out of contact with the corresponding latch of the first element. Preferably, the at least one spring element has an ellipse shape allowing an easy compression of the at least one spring element and thus the movement of the third element relative to the second element.

[0015] In a preferred embodiment, the first element further comprising at least one U-shaped bracket having a first and a second arm, the first arm comprising at least one opening and the second arm comprising at least one prong, and wherein the at least one prong is configured to be inserted into a side wall element to connect the first element of the locking mechanism to the side wall element of the container. In a further preferred embodiment, the second element further comprising at least one U-shaped bracket having a first and a second arm, the first arm comprising at least one opening and the second arm comprising at least one prong, and wherein the at least one prong is configured to be inserted into a side wall element to connect the second element of the locking mechanism to the side wall element of the container. The at least one prong is able to attach the first and / or second element in an efficient manner to the side wall elements of the container such that a secure connection between the first and / or second element and the side wall elements are achieved. In a preferred embodiment, at least three prongs are foreseen in the U-shaped bracket to provide a more secure connection of the first or second element to the side wall element.

[0016] In a further preferred embodiment, a side wall element of a container comprising at least one hole, wherein the at least one hole is configured to allow the insertion of the at least one prong to connect the locking mechanism to the side wall element. Using a hole in a side wall element to insert the prong in allows for a more secure way to attach the first and second elements to the side wall element. In a preferred embodiment, multiple holes are foreseen along the side edge of a side wall element to insert multiple prongs provide in the U-shaped bracket of the first or second element of the locking mechanism.

[0017] According to a further aspect there is provided a container being configured to be placed into an enclosing and an open configuration, the container comprising; a base; at least four side wall elements, each side wall element being adjacent at least one other side wall element when the container is placed in the enclosing configuration, and at least one locking mechanisms according to the present invention, the at least one locking mechanism being configured to releasably connect two adjacent side wall elements when the container is in the enclosing configuration.

[0018] In a preferred embodiment, the container comprising four side wall elements and four locking mechanisms according to the present invention, each side wall element being configured to pivot around at least one folding groove such that the container is configured to be placed into the enclosing and the open configuration, wherein the second element of the first locking mechanism is connected to a first edge of the first side wall element, the second element of the fourth locking mechanism is connected to a second edge of the first side wall element, the first element of the first locking mechanism is connected to a first edge of the second side wall element, the first element of the second locking mechanism is connected to a second edge of the second side wall element, the second element of the second locking mechanism is connected to a first edge of the third side wall element, the second element of the third locking mechanism is connected to a second edge of the third side wall element, the first element of the third locking mechanism is connected to a first edge of the fourth side wall element, and the first element of the fourth locking mechanism is connected to a second edge of the fourth side wall element. When a container is having four side wall elements, a locking mechanism can be effectively used to releasably connect two adjacent side wall elements to each other. When using in total four locking mechanisms and four movable side wall elements, all side wall elements will be interconnected to each other when the side wall elements are in an enclosing configuration and are able to remain in this enclosing configuration when the locking mechanisms are in place.

[0019] According to a further preferred embodiment, there is a container comprising six side wall elements and two locking mechanisms according to the present invention, one of the side wall elements being configured to be removed from the container such that the container being configured to be placed from the enclosing to the open configuration, wherein the first element of the first locking mechanism being connected to a first edge of the first side wall element, the second element) of the first locking mechanism being connected to a first edge of the second side wall element, the second element of the second locking mechanism being connected to a second edge of the second side wall element, and the first element of the second locking mechanism being connected to a first edge of the third side wall element. Alternatively, only two side wall elements may be provided instead of six individual side wall elements, where five of the originally foreseen side wall elements are formed as one piece rather than five separate side wall elements.

[0020] According to yet a further preferred embodiment, there is a container comprising five side wall elements and two locking mechanisms, at least one side wall element being configured to pivot around a folding groove, such that the container is configured to be placed into the enclosing and the open configuration, wherein the first element of the first locking mechanism being connected to a first edge of the first side wall element, the first element of the second locking mechanism being connected to a second edge of the first side wall element, the second element of the first locking mechanism being connected to a first edge of the second side wall element, and the second element of the second locking mechanism being connected to a second edge of the second side wall element. Alternatively, only two side wall elements may be provided instead of five individual side wall elements, where four of the originally foreseen side wall elements are formed as one piece rather than four separate side wall elements.

[0021] The above and further aspects and embodiments of the invention are described in the following sections and in the appended claims. The subject matter of the appended claims is hereby specifically incorporated in this specification.BRIEF DESCRIPTION OF THE FIGURES

[0022] Figure 1A shows a perspective view of a container foreseen on a loading pallet foreseen with four locking mechanisms according to the present invention. The container being in its enclosing configuration. Figure 1B shows a perspective top view of the container of figure 1A, the container being in its collapsed or open configuration. Figure 2A shows an alternative container having a lid to close of the interior of the container. The container having two locking mechanisms according to the present invention. Figure 2B shows an exploded view of the container of figure 2A, where the lid of the container is removed and one side wall element is unfasted from the remaining side wall elements of the container. Figure 2C shows a perspective view of the container of figures 2A and 2B, the container being in its collapsed configuration, whereby the remaining side wall elements are folded inwardly and the removeable side wall element inserted in between the foldable side wall elements. Figure 3A shows a further alternative container having a side wall element which is able to pivot relative to the remaining side wall elements of the container. The moveable side wall element can be secured to the surrounding side wall elements by two locking mechanisms. Figure 3B shows the container of figure 3A, with the moveable side wall element disengaged from the surrounding side wall elements, such that the container is in its open and accessible configuration. Figure 3C shows a detailed perspective view of the locking mechanism of the container as shown in figures 3A and 3B. Figure 3D shows a perspective view of the container of figures 3A to 3C, the container being in its collapsed configuration, whereby the pivotable side wall element is locked with the neighbouring side wall element or elements and the side wall elements are folded inwardly thus reducing the size of the container. Figure 4A shows a perspective view of a side wall element and the first element of the locking mechanism according to a first embodiment, whereby the first element of the locking mechanism is detached from the side wall element. Figure 4B shows a front view of the side wall element and the first element of the locking mechanism as shown in figure 4A. Figure 4C shows a top view of the side wall element and the first element of the locking mechanism as shown in figures 4A and 4B. Figure 4D shows a top view of the side wall element and the first element of the locking mechanism as shown in figure 4A, whereby the first element of the locking mechanism is attached to the side wall element. Figure 4E shows a front view of the side wall element and the first element of the locking mechanism as shown in figure 4D. Figure 4F shows a perspective view of the side wall element and the first element of the locking mechanism as shown in figures 4D and 4E. Figure 5A shows a front view of the locking mechanism according to a second embodiment of the present invention, wherein the three elements of the locking mechanism are shown independently from one another. Figure 5B shows a front view of the second embodiment of the locking mechanism, wherein the second and third elements of the locking mechanism are connected to each other, while the first element remains separate from the second and third element. Figure 6A shows a perspective view of the second and third element of the locking mechanism, whereby the third element of the locking mechanism is separate from the second element of the locking mechanism. Figure 6B shows a perspective view of a side wall element and the second and third element of the locking mechanism, whereby the third element is inserted into the second element, and the second element of the locking mechanism is detached from the side wall element. Figure 6C shows a front view of the side wall element and the second and third element of the locking mechanism as shown in figure 6B. Figure 6D shows a top view of the side wall element and the second and third element of the locking mechanism as shown in figures 6B and 6C. Figure 6E shows a top view of the side wall element and the second and third element of the locking mechanism as shown in figure 6B, whereby the second element of the locking mechanism is attached to the side wall element. Figure 6F shows a front view of the side wall element and the second and third element of the locking mechanism as shown in figure 6E. Figure 6G shows a perspective view of the side wall element and the second and third element of the locking mechanism as shown in figures 6E and 6F. Figure 7A shows a side view of two adjacent side wall elements of a container connected to each other by a locking mechanism of the present invention. The third element being engaged with the first element to connect both adjacent side wall elements to each other. Figure 7B shows a similar side view as shown in figure 7A, whereby the third element is moved in relation to the second element such that the third element is no longer engaged with the first element. Figure 8 shows a perspective view of the container of figure 1A, whereby the third elements of the two locking mechanisms are no longer in engaging contact with the first elements of the two locking mechanisms, such that the side wall element is moveable in relation to the neighbouring side wall elements. Figure 9 shows a perspective view of a cross section the locking mechanism in which the second and third element are engaged with the first element to connect both adjacent side wall elements to each other. Figure 10 shows a perspective view of another cross section of the locking mechanism, in which the second and third element are engaged with the first element to connect both adjacent side wall elements to each other. Figure 11 shows a top view of similar cross section of the locking mechanism as shown in figure 10. Figure 12A-12D show an alternative locking mechanism. In figure 12A, the locking mechanism is shown from the outside of the container, the second and third element being engaged with the first element to connect both adjacent side wall elements to each other. Figure 12B shows the locking mechanism as shown in figure 12A from the inside of the container. In figure 12C, the locking mechanism similar to the locking mechanism of figure 12A is shown, with the third element being moved in relation to the second element as to disengage the first and third element from each other. Figure 12D shows the locking mechanism as shown in figure 12C from the inside of the container. Figure 13A shows a perspective view of the locking mechanism in the unlocked state. Figure 13B shows a perspective view of a cross section of the locking mechanism in the unlocked state. Figure 14A shows a perspective view of the locking mechanism when moving from the unlocked state to the locked state. Figure 14B shows a perspective view of a cross section of the locking mechanism when moving from the unlocked state to the locked state. Figure 15A shows a perspective view of the locking mechanism in the locked state. Figure 15B shows a perspective view of a cross section of the locking mechanism in the locked state. DETAILED DESCRIPTION

[0023] As used herein, the singular forms "a", "an", and "the" include both singular and plural referents unless the context clearly dictates otherwise.

[0024] The terms "comprising", "comprises" and "comprised of" as used herein are synonymous with "including", "includes" or "containing", "contains", and are inclusive or open-ended and do not exclude additional, non-recited members, elements or method steps. The terms also encompass "consisting of" and "consisting essentially of", which enjoy well-established meanings in patent terminology.

[0025] The recitation of numerical ranges by endpoints includes all numbers and fractions subsumed within the respective ranges, as well as the recited endpoints. This applies to numerical ranges irrespective of whether they are introduced by the expression "from... to..." or the expression "between... and..." or another expression.

[0026] The terms "about" or "approximately" as used herein when referring to a measurable value such as a parameter, an amount, a temporal duration, and the like, are meant to encompass variations of and from the specified value, such as variations of + / -10% or less, preferably + / -5% or less, more preferably + / -1% or less, and still more preferably + / -0.1% or less of and from the specified value, insofar such variations are appropriate to perform in the disclosed invention. It is to be understood that the value to which the modifier "about" or "approximately" refers is itself also specifically, and preferably, disclosed.

[0027] Whereas the terms "one or more" or "at least one", such as one or more members or at least one member of a group of members, is clear per se, by means of further exemplification, the term encompasses inter alia a reference to any one of said members, or to any two or more of said members, such as, e.g. any ≥3, ≥4, ≥5, ≥6 or ≥7 etc. of said members, and up to all said members. In another example, "one or more" or "at least one" may refer to 1, 2, 3, 4, 5, 6, 7 or more.

[0028] The discussion of the background to the invention herein is included to explain the context of the invention. This is not to be taken as an admission that any of the material referred to was published, known, or part of the common general knowledge in any country as of the priority date of any of the claims.

[0029] Throughout this disclosure, various publications, patents and published patent specifications are referenced by an identifying citation. All documents cited in the present specification are hereby incorporated by reference in their entirety. In particular, the teachings or sections of such documents herein specifically referred to are incorporated by reference.

[0030] Unless otherwise defined, all terms used in disclosing the invention, including technical and scientific terms, have the meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. By means of further guidance, term definitions are included to better appreciate the teaching of the invention. When specific terms are defined in connection with a particular aspect of the invention or a particular embodiment of the invention, such connotation or meaning is meant to apply throughout this specification, i.e. also in the context of other aspects or embodiments of the invention, unless otherwise defined. For example, embodiments directed to products are also applicable to corresponding features of methods and uses.

[0031] In the following passages, different aspects or embodiments of the invention are defined in more detail. Each aspect or embodiment so defined may be combined with any other aspect(s) or embodiment(s) unless clearly indicated to the contrary. In particular, any feature indicated as being preferred or advantageous may be combined with any other feature or features indicated as being preferred or advantageous.

[0032] Reference throughout this specification to "one embodiment", "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner, as would be apparent to a person skilled in the art from this disclosure, in one or more embodiments. Furthermore, while some embodiments described herein include some but not other features included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention, and form different embodiments, as would be understood by those in the art. For example, in the appended claims, alternative combinations of claimed embodiments are encompassed, as would be understood by those in the art.

[0033] The invention provides in a locking mechanism for releasably connecting two adjacent side wall elements of a container, the locking mechanism comprising: a first element connectable to a first side wall element, the first element comprising at least one latch; a second element connectable to a second side wall element, and a third element movably connected to the second element, the third element comprising at least one protruding locking element, wherein the at least one protruding locking element being configured to releasably connect with the at least one latch to lock the first element with the second element such that movement of the first side wall element relative to the second side wall element is prevented.

[0034] In a preferred embodiment, the at least one protruding locking element is configured to automatically engage behind the latch to lock the first element to the second element when moving the side wall elements from the unlocked to the locked state.

[0035] An advantage of this is that automatically snaps protruding locking element behind the latch as the side walls move from the unlocked to the locked state, thereby eliminating manual locking steps, speeding assembly, and ensuring reliable closure. This tool-free design (requiring no fasteners, screws, or brackets) simplifies both installation and removal. Furthermore, the snap fit provides feedback, confirming full engagement, while the rigid latch-protrusion interface prevents movement between walls, boosting structural strength.

[0036] In a preferred embodiment, the at least one protruding locking element is configured to remain in a protruded state in both the unlocked and locked state, and is further configured to be pushed inward in the direction of the second element by the latch when transitioning from the unlocked position to the locked position, such that contact between the protruding locking element and the latch causes inward displacement of the protruding locking element.

[0037] An advantage of this is that by maintaining the protruding locking element in its extended configuration in both unlocked and locked states, thereby ensuring that the protruding locking element is ready for engagement as the side walls move from the unlocked to the locked state. During closure of the side walls, the latch cams against the protrusion to push it inward against its bias; this camming action permits smooth low-force insertion past the latch and greatly reduces wear on contact surface. Because the protrusion yields under cam contact, engagement forces remain consistent even when minor dimensional variances are present, thereby compensating for manufacturing tolerances without compromising lock integrity.

[0038] In a preferred embodiment, the at least one protruding locking element comprises a chamfered edge or filleted edge configured to make contact with the latch during movement from the unlocked state to the locked state, such that the chamfered edge or filleted edge facilitates automatic inward displacement of the protruding locking element when engaging with the latch.

[0039] An additional advantage of the chamfered edge or filleted edge is that it facilitates user operation by permitting locking to be effected solely through movement of the side walls. As the side walls are moved from the unlocked to the locked position, the chamfered edge or filleted edge automatically contacts the latch and cams the protruding locking element inward, thereby engaging the protruding locking element without requiring separate alignment, manual actuation, or supplementary tooling.

[0040] As used herein, the term "chamfered edge" generally refers to an inclined or bevelled surface formed at the intersection of two faces of a protruding locking element, wherein and inclined surface extends between the outermost extremity of the protruding locking element and its adjacent side face. The chamfer can be configured with an acute angle relative to its side face such that, upon movement of a complementary latch into engagement, the chamfered edge can serve as a camming surface to guide and automatically push the protruding locking element inward against its bias.

[0041] As used herein, the term "filleted edge" generally refers to a rounded, curved or radiused surface formed at the intersection of two faces of a protruding locking element, wherein the rounded, curved or radiused surface extends between the outermost extremity of the protruding locking element and its adjacent side face. The fillet can be configured with a defined rounding, curvature or radius such that, upon movement of a complementary latch into engagement, the filleted edge can serve as a camming surface to guide and automatically push the protruding locking element inward against its bias.

[0042] It is to be understood that the side wall elements of the container may be repeatably moved between an extended or enclosing state and a collapsed or open state by application of external force by releasing the locking mechanisms of the container.

[0043] It is further to be understood that one or more side wall elements may be removed from the adjacent side wall elements of the container as to allow access to the interior of the container by releasing the locking mechanisms of the container. It is further to be understood that one or more side wall elements may be able to move relative to another side wall element as to allow access to the interior of the container by releasing the locking mechanisms of the container.

[0044] The term "container" as used herein is well known to a skilled person and relates to a receptacle or enclosure that is configured to hold, store, and transport goods, materials, or substances. In addition thereto, generally containers are further designed to protect their contents from external elements, including but not limited to external elements such as moisture, air, and contaminants. Generally, containers are also designed to aid safe and efficient handling, storage, and transportation of their contents. They are commonly used in various settings, including but not limited to households, industries, laboratories, and commercial environments. The term "container" may be interchangeably used with any suitable synonym thereof including but not limited to "storage unit" ,"vessel", "holder", "canister", "box", "bin", "crate", "cask", "drum", "barrel", "tank", "bucket", "pot", "carton", "case", and "package".

[0045] "Storage capacity" as used herein refers to an amount of goods or materials that can be held, contained, or stored within a container. Storage capacity allows quantification of the volume, size, or number of items that can be accommodated in said container. Illustrative examples of synonymous terms include without limitation "storage volume", "(holding, load, or containment) capacity", and "storage limit". "Goods" as used in the context of the present disclosure refers to any material or content that may be placed inside (i.e. loaded into) a container as described herein. The nature of the goods or their state is not particularly limiting in the context of the present invention. Hence, envisaged are containers suitable for solid goods, semi-solid goods, fluid goods, gaseous goods, or any combination thereof.

[0046] The "base", or interchangeably "bottom", "baseplate", "support plate", or "floor" of a container typically refers to a bottom part or ground surface of a container which provides stability and support for the structure of said container. In a typical container configuration, goods are placed in the interior of the container on the base. The base structure aids in providing stability and support to the container. In embodiments wherein the container is of a rectangular or cuboid shape, the base and the side walls are preferably substantially straight walls. Optionally, the base may be reinforced by using reinforcing parts, preferably in a grid like pattern, more preferably in a grid like pattern wherein the grid is made up of straight lines in one, two or more directions. Alternatively the base comprises curved reinforcing parts. By means of illustration and not limitation, the reinforcing parts may be rigid rod-shaped or plank-shaped elements. Optionally, the reinforcing parts may be metal, hard plastic (i.e. any hard polymer), or wood rod-shaped or plank-shaped reinforcing parts. In some embodiments, the reinforcing parts comprises one or more reinforcing rods, preferably embedded into the base. Preferably, a reinforcement rod is a metal rod or plastic rod, more preferably a metal rod.

[0047] In the context of a locking mechanism used in a typical rectangular or cuboid container, the term "side wall element" refers to the substantially vertical surfaces that extend from the base of the container to form the sides thereof and which enclose the space within the container. Depending on the configuration that is described for the container, the (complete) side wall element may be substantially vertical compared to the base (i.e. perpendicular to the base) in e.g. the extended, enclosing configuration, or only a first side wall element below a groove or groove folding area may be substantially vertical compared to the base to allow pivoting to e.g. the open configuration. When referring to a first side wall element below the groove or groove folding area, it is to be appreciated that reference is made to the side wall element proximal to the base of the container. Alternatively, when referring to a first side wall element above the groove or groove folding area, it is to be appreciated that reference is made to the side wall element proximal to the open end of the container. The term "side wall element" can further refer to a part of a side wall of a container, whereby the side wall element can be completely detached from the remaining side wall elements that form the container, or whereby the side wall element can be moved in relation to the remaining side wall elements, being around a vertical axis, a horizontal axis or around an angled axis.

[0048] Preferably, the base comprises polymer, preferably polypropylene (PP) and / or polyethylene, more preferably PP. Preferably; the container top lid comprises polymer, preferably polypropylene (PP) and / or polyethylene, more preferably PP. Preferably the side walls comprise polymer, preferably polypropylene (PP), more preferably PP which comprises talc.

[0049] In some embodiments, the container is made at least partially, preferably entirely from a polymer, preferably a synthetic polymer, more preferably polypropylene (PP), polyethylene (PE), acrylonitrile butadiene styrene (ABS), polyvinylchloride (PVC), polystyrene (PS), polymethylmethacrylate (PMMA), polyamide (PA) and / or polylactic acid (PLA). This makes it possible to use the container in multi way applications.

[0050] The container of the present invention is able to at least adopt two distinct configurations, an "enclosing configuration" and a "open configuration". The enclosing configuration is used herein to indicate a container configuration characterised by a substantial vertical position of all side walls which accommodates a relatively large storage capacity in which goods can be placed for e.g. storage or transportation. The open configuration is used herein to indicate a container configuration whereby an access is provided to the interior of the container, or whereby the side wall elements of the container are detached from each other to collapse the container in flattened configuration. In some embodiments, the collapsed state has a flattened form, optionally rectangular, such as oblong or square. Illustrative alternative terms that may be used when referring to the enclosing configurations include without limitation "expanded", "unfolded", "extended", "deployed", and "not-collapsed". Illustrative alternative terms that may be used when referring to the open configuration include without limitation "pivoted", "folded", "compressed", "compacted", "collapsed", and "minimized". "Groove folding area" or "groove" as used herein refers to a particular portion, section, area or zone, of one or more side wall elements configured to accommodate folding means such as one or more folding grooves which facilitate folding a portion of said side wall elements. The function of the groove folding area or groove typically relates to providing a guided folding mechanism. A skilled person appreciates that the folding groove area and one or more folding grooves defined herein extend over the whole or essentially the whole of the width of the side wall element. Likewise, it is possible to have multiple folding groove areas distributed along a side wall element at different heights above the base to allow a greater versatility on how the container is folded or opened up and the access to the interior of the container is created when in the open configuration.

[0051] The particulars of the one or more folding grooves are not limiting for the context of the present invention and refer to any shape which facilitates manipulation of the side wall element by folding. Hence, illustrative examples of folding grooves envisaged by the present disclosure include without limitation V-folding grooves, U-folding grooves, hinge folding grooves, score folding grooves, living hinge folding grooves, accordion folding grooves, double score folding grooves, W-folding grooves, or any combination thereof. A skilled person appreciates that the optimal type of folding grooves will depend inter alia on the material of the container. Particularly preferred folding grooves for containers made from a polymer material are V-folding grooves, U-folding grooves, and score folding grooves.

[0052] Preferably, the container is receptive to a top lid in the enclosing configuration. More preferably, the container is receptive to a top lid in both the enclosing and open configuration. A top lid may serve different purposes, for example ensuring proper sealing of the container to protect the goods or securing the goods from theft. Numerous top lids have been described throughout the art and include without limitation a snap-on lid, a clamshell lid, a press-on lid, and a flip-flop lid. Optionally, the container is configured to comprise a sealing mechanism between the side walls and the top lid, such as but not limited to a rim gasket, snap tabs or snap closure, a compression seal, a latch, interlocking rims, or any combination thereof. Preferably, the top lid has substantially the same shape as the base of the container. Optionally, corner pieces may assist in providing a fit between the top lid and the side of the container. Further design considerations of the top lid are not limiting for the invention. Hence, the top lid may be a flat wall, or a wall that comprises further recesses or indented portions to facilitate transport and / or stacking of the container to a second container of the same type, or a second container of a type wherein the lower portion is compatible for stacking on the top lid of the container.

[0053] A further advantage of the invention is that the physical integrity of the side wall elements is maintained even after repeatably releasing and securing the side wall elements of the container. Hence, the container envisaged in the present disclosure is not a disposable, one time use type of container.

[0054] "Locking mechanism" as used throughout the present disclosure refers to a mechanism having as a function to hold the side wall elements of the container described herein fixated in place, i.e. fixate their relative position and orientation to each other and prevent any movement from a side wall element relative to a neighbouring side wall element. Hence, the locking mechanism ensures that the side wall elements remain securely attached to and aligned with each other when the elements of the locking mechanism are connected to each other, thus maintaining the structural integrity and shape of the container as a whole. The locking mechanism prevents the side wall elements from collapsing, shifting, or becoming unintendedly detached when the container is used. The locking mechanism further allows the side wall elements to be detached from each other to provide easy access to the interior of the container or to allow the side wall elements to be folded inwardly to minimize the total height of the container. The material of the securing mechanism is not limiting for the invention.

[0055] Preferably a single locking mechanism fixates the relative position of two adjacent side wall elements vis-à-vis each other. More preferably, two locking mechanisms will be able to fixate a side wall element relatively to two adjacent side wall elements. Even more preferably, a container comprises two sets of opposing side wall elements equipped with four locking mechanisms will be able to fixate the relative position of all side wall elements vis-à-vis each other. In certain embodiments, locking mechanisms are provided on two opposing side walls at different heights, such as near the top, the middle, or even the bottom of the side wall. A skilled person appreciates that any such combination is envisaged by the present disclosure.

[0056] A preferred locking mechanism in the context of the present invention comprising a first element connectable to a first side wall element, the first element comprising at least one latch; a second element connectable to a second side wall element, and a third element movably connected to the second element, the third element comprising at least one protruding locking element. The at least one protruding locking element being configured to releasably connect with the at least one latch to lock the first element with the second element such that movement of the first side wall element relative to the second side wall element is prevented.

[0057] Preferably, the first element further comprising at least one opening and the second element comprising at least one protrusion. The at least one protrusion of the second element being configured to be inserted into the at least one opening of the first element when two adjacent side wall elements are moved as to bring the container from the open to the enclosing configuration.

[0058] The combination of a latch and a protruding locking element will be able to prevent movement of adjacent side wall elements in a first direction, while the combination of an opening and a protrusion inserted into the opening will prevent movement of the adjacent side wall elements in a second direction, different from the first direction. Due to the combination of the different elements cooperating with each other, an efficient and easy locking mechanism is provided which will allow two adjacent side wall elements to be connected to each other and movement between them prevented.

[0059] Preferably, the third element is moveably connected to the second element. While the first and second elements being connected to a side wall element, the third element is not directly connected to a side wall element, but will be able to move relatively to the second element and thus the side wall element such that the protruding locking element attached to the third element can be brought into contact with the latch of the first element to connect the third element with the first element and to thus lock the first element with the second element. Therefore, the third element is foreseen with at least one spring element having a locking pin. When the third element is connected to the second element, the spring element will be inserted into a slot. The slot is foreseen at its end with a catch which is able to receive the locking pin to securely lock the spring element inside the slot and thus connecting the third element with the second element. When the locking mechanism is operated, the spring element is pushed in the direction of the catch thus compressing the spring element inside the housing of the second element. The third element is thus moved relatively to the second element to allow the protruding locking element of the third element to be brought in or out of reach of the latch of the first element. Due to the locking pin and the catch, releasing the compression on the spring element will allow the third element to move back to its original position without the third element being able to release itself from the second element.

[0060] Preferably, the first and second element comprising a U-shaped bracket having a first and second arm. When connecting the first or second element to a side wall element, each arm of the U-shaped bracket will be positioned on a side of the side wall element such that the side wall element is lodged inside the U-shaped bracket. The first arm of the U-shaped bracket has at least one opening, while the second arm of the U-shaped bracket has at least one prong at the same height as the opening on the first arm of the U-shaped bracket. When the first or second element is positioned on the side wall element, the at least one prong will be pushed through the wall of the side wall element, preferably all the way through the wall of the side wall element and through the opening in the first arm of the U-shaped bracket such that the first or second element is firmly connected to the side wall element. Preferably, the first and second element each have one U-shaped bracket having a first and second arm. Preferably, three openings are foreseen on the first arm of the U-shaped bracket and three prongs are foreseen on the second arm of the U-shaped bracket. A skilled person appreciates that multiple U-shaped brackets can be used instead of one, whereby each U-shaped bracket is foreseen with a single opening and a single prong and that any such combination is envisaged by the present disclosure.

[0061] Preferably, at least one hole is foreseen in the side wall elements to accommodate for the connection of the first or second element of the locking mechanism. The prongs of the U-shaped brackets are able to be inserted in the holes such that an easier connection of the first or second element with the side wall element is achieved. "Hole" as used throughout the present disclosure refers to any kind of opening or cut-out in the side wall elements. Multiple holes are preferably foreseen along the side edge of a side wall element to allow multiple prongs of the u-shaped bracket of the first or second elements to be inserted thus providing for a better positioning, aligning and connection of the first or second element with the side wall element.

[0062] Optionally, one or more side walls are characterised by at least one translucent element to facilitate visual inspection of the contents of the container in the extended and / or collapsed configuration. The at least one translucent element of the side wall(s) may be positioned in the first side wall element, the second side wall element, or a combination thereof.

[0063] The term "dismountable" refers to the attachment between elements being temporary but stable. The elements can be detached by the application of force.

[0064] While the invention has been described in conjunction with specific embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations as follows in the spirit and broad scope of the appended claims. The herein disclosed aspects and embodiments of the invention are further supported by the following non-limiting examples.EXAMPLES

[0065] Figure 1A shows a perspective view of a container 1 foreseen with four locking mechanisms 100a, 100b, 100c, 100d, according to a first embodiment of the present invention. The container 1 being in its enclosing configuration having a first storage capacity accessible from the top of the container 1. The container 1 comprises a base 10 and four side wall elements 12, 14, 16, 18 in total. On each side wall element, two lines are shown which are parallel to the base 10 and which represent folding grooves. Both folding grooves are located in their respective groove folding area 40 and are positioned substantially parallel to the base 10. Each side wall element 12, 14, 16, 18 is foreseen with such a groove folding area 40. Each side wall element has a groove folding area 40 in which the first groove and the second groove are spaced apart a first certain distance from each other.

[0066] Each of the corners of the container 1 are foreseen with a reinforcement elements such as a reinforcement corner 160. The reinforcement corners 160 allow the side walls 12, 14, 16, 18 to be connected to the base 10 in a secure and safe manner.

[0067] The locking mechanisms 100a-100d as shown in figure 1A are thus able to effectively lock neighbouring side wall elements located in a different plane. Further, the four locking mechanisms 100a-100d as shown in figure 1A are in their securing and locking position. The first element of the first locking mechanism 100a is connected to the second side wall element 14 and the second element of the first locking mechanism 100a is connected to the first side wall element 12. The first element of the second locking mechanism 100b is connected to the second side wall element 14 and the second element of the second locking mechanism 100b is connected to the third side wall element 16. The first element of the third locking mechanism 100c is connected to the fourth side wall element 18 and the second element of the third locking mechanism 100c is connected to the third side wall element 16. The first element of the fourth locking mechanism 100d is connected to the fourth side wall element 18 and the second element of the fourth locking mechanism 100d is connected to the first side wall element 12. Each locking mechanism 100a-100d has a third element, whereby each third element is connected to each second element of each locking mechanism respectively. Each third element of each locking mechanism is connected with the first element of the locking mechanism, thus cooperating with each other to keep the side wall elements in an upright and enclosing position. The locking mechanisms 100a-100d are installed along the side edges of the side wall elements 12, 14, 16, 18 such that the edges of two adjacent side wall elements are in close contact with each other when the locking mechanisms 100a-100d are locked.

[0068] Although not shown, the side wall elements 12, 14, 16, 18 may comprise handles or handle openings to allow a user to easily manipulate the side wall elements when bringing the container and thus the side wall elements from their enclosing configuration to their collapsed or open configuration and vice versa. These handles may be connected to the side wall elements as a separate piece, or may be formed together with the side wall elements as a single plastic injection part.

[0069] Figure 1B shows a perspective top view of the container 1 in its collapsed, open configuration and has a second storage capacity which is smaller than the first storage capacity when the container 1 was in its enclosing configuration. As is clear from figure 1B, the locking mechanisms 100a-100d have been unlocked allowing the side wall elements 12, 14, 16, 18 to be folded inwardly such that the top elements of each side wall element 12, 14, 16, 18, are now placed substantially parallel to the base 10 and positioned below the reinforcement corners 160. The bottom elements of each side wall element 12, 14, 16, 18 remains in its upright position and still functions as a side wall element of the collapsed container 1, thus effectively shielding and securing items which are placed and stored inside the container 1 before moving the side wall elements 12, 14, 16, 18 of the container 1 from the enclosing configuration to the collapsed configuration. Although not shown, it is possible to foresee side wall elements 12, 14, 16, 18 without a groove area 40, but having side wall elements 12, 14, 16, 18 which are not fixed to the base 10. In such a case, the side wall elements 12, 14, 16, 18 can be connected by using the same four locking mechanisms 100a-100d on each corner to connect two neighbouring side wall elements to each other. Releasing the locking mechanisms connected on each side of a side wall element will then allow a user to remove this side wall element from the remaining of the container 1 to thus create an access to the interior of the container 1, while the remaining three side wall elements remain connected to one another via the remaining locking mechanisms.

[0070] Figure 2A shows a perspective view of an alternative container 1 in its enclosing configuration with a top lid 25 installed on top of the container 1 to shield placed goods inside the container 1 from the environment. Further, figure 2A shows a container having six side wall elements 12, 14a, 14b, 14c 16, 18 and two locking mechanisms 100'a, 100'b. Although the side wall elements 12, 14a, 14c, 16, 18 are represented as separate side wall elements fixedly connected to each other e.g. by gluing or riveting, they can likewise be constructed as a single element to increase the overall rigidity of the side wall element structure. The locking mechanisms 100'a, 100'b are thus able to effectively lock neighbouring side wall elements located in the same plane. The first locking mechanism 100'a is installed between the side wall element 14a and side wall element 14b, while the second locking mechanism 100'b is installed between the side wall element 14b and the side wall element 14c. The first element 110' of the first locking mechanism 100'a is connected to the side wall element 14a, while the second element of the first locking mechanism 100'a is connected to the side wall element 14b. The first element 110' of the second locking mechanism 100'b is connected to the side wall element 14c, while the second element 120 of the second locking mechanism 100'b is connected to the side wall element 14b. When the side wall element 14b is placed adjacent to the side wall elements 14a and 14c, the first 100'a and second 100'b locking mechanisms are able to secure the side wall elements 14a, 14b, 14c with each other.

[0071] Figure 2B shows an exploded view of the container 1 of figure 2A, where the lid 25 of the container 1 is removed and one side wall element 14b is unfasted from the remaining side wall elements 14a, 14c of the container 1. The second 120 and third 130 elements of the first 100'a and second 100'b locking mechanisms remain attached to the side wall element 14b, while the first element 110' of the first 100'a and second 100'b locking mechanisms remain attached to the side wall elements 14a, 14c. When the locking mechanisms 100'a, 100'b attached to the side wall element 14b are unfastened and removed from the elements of the locking mechanisms 100'a, 100'b, an access is created to the interior of the container 1.

[0072] Figure 2C shows a perspective view of the container 1 of figures 2A and 2B, the container 1 being in its collapsed, open configuration, whereby the remaining side wall elements 12, 14a, 14c, 16, 18 are folded inwardly and the removeable side wall element 14b has been inserted in between the foldable side wall elements before folding. That way, the size of the entire container 1 can be reduced by folding the side wall elements, such that they are able to be positioned on top of the base 10. Additionally, it is possible to place the lid 25 on top of the folded side wall elements such that a rigid surface is achieved on which another container can be placed.

[0073] Alternatively, although not shown, it is possible to have the side wall elements 14a, 14b, 14c constructed as one side wall element 14, and wherein the two locking mechanisms 100'a, 100'b are connecting the side wall element 14 with the neighbouring side wall elements 12, 16. Releasing the two locking mechanisms 100'a, 100'b will then allow a user to remove the entire side wall element 14, rather than removing a portion of the side wall element such as side wall element 14b. When all side wall elements are connected via locking mechanisms to each other and have no fixed connection with the base 10, upon release of all the locking mechanisms, the side wall elements can be placed on top of the base 10 and stacked on top of each other to reduce the overall size of the container. Again, a top lid 25 can be placed over the stacked side wall elements such that a stable surface is achieved on which another container can be placed.

[0074] Figure 3A shows a further alternative container 1 having a side wall element 14b which is able to pivot relative to the remaining side wall elements 12, 14a, 16, 18 of the container 1. The moveable side wall element 14b can be secured to the surrounding side wall element 14a by two locking mechanisms 100'a, 100'b. The moveable side wall element 14b is partly cut-out from the remaining side wall element 14a and a hinge 42 will allow for the side wall element 14b to pivot relative to the side wall element 14a. The locking mechanisms 100'a, 100'b are thus able to effectively lock neighbouring side wall elements located in the same plane. The locking mechanism 100'a comprises a first element 110' connected to a first edge of the side wall element 14a, while a second element 120 of the locking mechanism 100'a is connected to a first edge of the side wall element 14b. A third element 130 is moveably connected to the second element 120 of the locking mechanism 100'a and is able to connect the second element 120 of locking mechanism 100'a with the first element 110' of the locking mechanism 100'a. The locking mechanism 100'b comprises a first element 110' connected to a second edge of the side wall element 14a, while a second element 120 of the locking mechanism 100'b is connected to a second edge of the side wall element 14b. A third element 130 is moveably connected to the second element 120 of the locking mechanism 100'b and is able to connect the second element 120 of locking mechanism 100'b with the first element 110' of the locking mechanism 100'b.

[0075] Figure 3B shows the container 1 of figure 3A, with the moveable side wall element 14b disengaged from the surrounding side wall element 14a, such that the container 1 is in its open and accessible configuration. When disengaging or unlocking the locking mechanisms 100'a, 100'b, the moveable side wall element 14b is able to pivot around the hinge 42 such that an opening is created inside the side wall element 14a of the container 1. When the locking mechanisms 100'a, 100'b are disengaged and the side wall element 14b is pivoted away from the side wall element 14a, the first element 110' of the first locking mechanism 100'a and the first element 110' of the second locking mechanism 100'b remain connected with the edges of the side wall element 14a, while the second 120 and third 130 elements of the first locking mechanism 100'a and the second 120 and third 130 elements of the second locking mechanism 100'b remains connected with the edges of the moveable side wall element 14b.

[0076] Figure 3C shows a detailed perspective view of the locking mechanism 100'b of the container 1 as shown in figures 3A and 3B. In figure 3C, the locking mechanism 100'b is disengaged such that the moveable side wall element 14b is able to pivot around its hinge 42 and away from the side wall element 14a. When pivoting the moveable side wall element 14b away from the side wall element 14a, the first element 110' of the locking mechanism 100'b will remain connected with the edge of the side wall element 14a, while the second 120 and third 130 element of the locking mechanism 100'b will move together with the moveable side wall element 14b.

[0077] The first element 110' of the locking mechanism 100'b comprises two latches 112, each latch 112 is able to hook behind a respective protruding locking element 132 of the third element 130 to securely lock the first element 110', to the third element 130, and thus also to the second element 120. The first element 110' further comprises two openings 114, one opening at the top end of the first element 110' and a second opening at the bottom end of the first element 110'. Each opening 114 is divided by a partition to allow a better fit with a complementary protrusion 122 of the second element 120. The first element 110' further comprises two latches 112 cooperating with complementary protruding locking elements 132 of the second element 120. A handle 136 is foreseen on the third element 130 such that an operator is able to move the third element 130 relative to the second element 120. When moving the third element 130 by pushing the handle 136, the protruding locking elements 132 are no longer in contact with the latches 112. When the protruding locking elements 132 are no longer hooked behind their respective latches 112 and the protrusions 122 are no longer inserted into the openings 114, the moveable side wall element 14b is able to pivot around the hinge 42 away from the neighbouring side wall element 14a, as can be seen in figure 3A.

[0078] A skilled person will understand that the partition foreseen in each opening 114 may not be necessary, however, the partition will create a friction between the walls of the opening 114, the partition and the protrusion 122 when inserting or removing the protrusion 122 from the opening 114.

[0079] Although in Figures 3A to 3C, two locking mechanisms 100'a, 100'b are foreseen to lock the side wall element 14b to the neighbouring side wall element 14a, a skilled person would understand that instead of pivoting around a horizontal axis, it is likewise possible to pivot around a vertical axis. In such an embodiment, e.g. the locking mechanism 100a could be replaced by the hinge 42, and the locking mechanism 100b will again be able to lock the moveable side wall element 14b to the neighbouring side wall element 14a.

[0080] As can be seen from the figures 1A to 3C, two alternative locking mechanisms are available. A first locking mechanism 100 can be used when the two adjacent side wall elements which need to be connected to each other form a corner when connected. Such a locking mechanism 100 is used in the examples shown in figure 1A and 1B. A second locking mechanism 100' can be used when the two adjacent side wall elements which need to be connected to each other remain in the same surface or plane when connected. Such a locking mechanism 100' is used in the examples shown in figures 2A, 2B, 3A, 3B and 3C.

[0081] Figure 3D shows a perspective view of the container 1 of figures 3A to 3C, the container 1 being in its collapsed configuration, whereby the pivotable side wall element 14b is locked with the neighbouring side wall element 14a and all side wall elements 12, 14a, 14b, 16, 18 are folded inwardly thus reducing the size of the container 1.

[0082] Similar to the embodiment shown in figure 2C, when the side wall elements 12, 14a, 14b, 16, 18 of the container 1 of figure 3A are not connected to the base 10 and each side wall element 12, 14, 16, 18 is connected to a neighbouring side wall element by e.g. a folding groove, the container 1 can likewise be folded to reduce its size. It may be necessary to foresee additional folding grooves on the side wall elements, such as the folding grooves shown in figure 3A on side wall elements 12 and 16, to allow the folded container to fit onto the base 10.

[0083] Figure 4A shows a perspective view of a side wall element 14 and the first element 110 of a first embodiment of the locking mechanism 100, whereby the first element 110 of the locking mechanism 100 is detached from the side wall element 14 but ready to be installed onto the edge of the side wall element 14. In the side wall element, three holes 20 are foreseen to facilitate in the connection of the first element 110 to the side wall element 14. The edge of the first element 110 facing the side wall element 14 has a U-shaped bracket 115 formed by a first 116 and a second 118 arm. The first arm 116 comprising three openings 117, while the second arm 118 comprising three prongs 119. Each prong 119 is configured to be inserted into one of the holes 20 of the side wall element 14 to connect the first element 110 of the locking mechanism 100 to the side wall element 14 of the container 1. Connection of the first element 110 to the side wall element 14 is possible by pushing the U-shaped bracket 115 over the edge of the side wall element 14 such that the first arm 116 is positioned on one side of the side wall element 14 and the second arm 118 is positioned on the other side of the side wall element 14. When the first element 110 is pushed sufficiently far on the side wall element 14, the prongs 119 positioned on the second arm 118 will be able to snap inside the holes 20 of the side wall element 14. Figure 5A clearly shows the provided openings 114 which are able to receive the corresponding protrusions 122 of the second element 120, and the latches 112 which are able to hook behind the corresponding protruding locking elements 132 of the third element 130.

[0084] Figure 4B shows a front view of the side wall element 14 and the first element 110 of the locking mechanism as shown in figure 4A. Figure 4C shows a top view of the side wall element 14 and the first element 110 of the locking mechanism 100 as shown in figures 4A and 4B. In figure 4C, the first 116 and second 118 arm of the U-shaped bracket 115 is clearly visible. The second arm 118 is foreseen with prongs 119 which are positioned to the inside of the U-shaped bracket 115. The first arm 116 is foreseen with openings 117, each opening 117 being positioned at the same height as a respective prong 119. When the first element 110 is connected to the side wall element 14, as can be seen in figure 4D, each prong 119 will be inserted into a hole 20 of the side wall element. When the first element 110 needs to be removed from the side wall element 14, an operator will be able to push against the prongs 119 via the openings 117 to push the prongs 119 out of the holes 20 of the side wall element 14. Once the prongs 119 are removed from the holes 20 and the U-shaped bracket 115 is slightly pushed open, the first element 110 can be pulled away from the side wall element 14 to remove the first element 110 from the side wall element 14.

[0085] Figure 4E shows a front view of the side wall element 14 and the first element 110 of the locking mechanism 100 as shown in figure 4D, clearly showing the three prongs 119 which are inserted in the holes 20 and can be reached through the openings 117 provided in first arm 116.

[0086] Figure 4F shows a perspective view of the side wall element 14 and the first element 110 of the locking mechanism 100 as shown in figures 4D and 4E. The openings 114 and the latches 112 are positioned on the free end of the first element 110 such that they can easily engage with the corresponding protrusions 122 and protruding locking elements 132 of the second 120 and third 130 element.

[0087] Figure 5A shows a front view of a second embodiment of the locking mechanism 100' of the present invention, wherein three elements 110', 120, 130 of the locking mechanism 100' are shown independently from one another. It is to be noted that only the first element 110' of the second embodiment of the locking mechanism 100' differs from the first element 110 of the first embodiment of the locking mechanism 100, while the second 120 and third 130 elements remain the same for both embodiments of the locking mechanisms 100, 100'.

[0088] The first element 110' comprising two openings 114, one at the top of the first element and one at the bottom of the first element, and two latches 112 positioned between the two openings 114. Each opening 114 is divided by a partition to create two smaller openings. Further, one side of the first element 110' has a U-shaped bracket 115 having a first 116 and a second 118 arm.

[0089] The second element 120 comprises two slots 124 to receive the spring elements 134 of the third element 130. The second element 120 further comprises two sets of protrusions 122, one set at the top of the second element 120 and another set at the bottom of the second element 120. Further, one side of the second element 120 has a U-shaped bracket 125 having a first 126 and a second 128 arm.

[0090] The third element 130 comprises two protruding locking elements 132 which are able to lock behind the respective latches 112 provided on the first element 110. The third element 130 further comprises two spring element 134 which are able to be brought into the respective slots 124 of the second element 120. Further, a handle 136 is foreseen on the third element 130 to allow an operator of the locking mechanism 100 to grip the third element 130 such that the third element 130 can be moved relative to the second element 120.

[0091] Figure 5B shows a front view of the second embodiment of the locking mechanism 100', wherein the second 120 and third 130 elements of the locking mechanism are connected to each other, while the first element 110' remains separate from the second 120 and third 130 element. The two spring elements 134 have been inserted into the slots 124 and the handle 136 is now located behind the front wall of the second element 120.

[0092] Figure 6A shows a perspective view of the second 120 and third 130 element of the locking mechanism 100, whereby the third element 130 of the locking mechanism is separate from the second element 120 of the locking mechanism. As mentioned previously, the second 120 and third 130 element are the same for the first and second embodiment of the locking mechanisms 100, 100'.

[0093] The third element 130 is provided with two spring elements 134. Each spring element 134 comprising a locking pin 138 positioned at its top. Further, the handle 136 of the third element 130 is shown, as well as the two protruding locking elements 132.

[0094] Further, the second element 120 having a U-shaped bracket 125 is shown. The U-shaped bracket 125 having a first 126 and a second 128 arm. The first arm 126 comprising three openings 127, while the second arm 128 comprising three prongs (not shown) which are accessible through the openings 127. Two slots 124 are foreseen in the second element 120 to receive the spring elements 134 of the third element 130. Finally, the second element 120 is foreseen with two sets of protrusions 122, a first set of protrusions 122 being positioned in the vicinity of the top of the second element, while a second set of protrusions 122 being positioned in the vicinity of the bottom end of the second element 120. Multiple ribs 121 are foreseen in the slots 124 of the second element 120. These ribs 121 reinforce the overall structure of the second element 120, while simultaneously being able to guide, correctly align and hold the spring elements 134 inside the slots 124. When pushing the spring elements 134 inside the slots 124, the locking pins 138 positioned on top of the spring elements 134 will be pushed inside the catch 123 (see figure 9) positioned at the end of the slot 124.

[0095] Figure 6B shows a perspective view of a side wall element 12 and the second 120 and third 130 element of the locking mechanism 100, 100', whereby the third element 130 is inserted into the second element 120, and the second element 120 of the locking mechanism 100, 100' is detached from the side wall element 12, while figure 6C shows a front view of the side wall element 12 and the second 120 and third 130 element of the locking mechanism 100, 100' as shown in figure 6B. The U-shaped bracket 125 is aligned with the edge of the side wall element 12 such that the second element 120 can be pushed onto the side wall element 12. The side wall element 12 is foreseen with three holes 20 which are able to cooperate with the prongs 129 of the U-shaped bracket 125.

[0096] Figure 6D shows a top view of the side wall element 12 and the second 120 and third 130 element of the locking mechanism 100 as shown in figures 6B and 6C. In figure 6D, the first 126 and second 128 arm of the U-shaped bracket 125 is clearly visible. The second arm 128 is foreseen with prongs 129 which are positioned to the inside of the U-shaped bracket 125. The first arm 126 is foreseen with openings 127, each opening 127 being positioned at the same height as a respective prong 129. When the second element 120 is connected to the side wall element 12, as can be seen in figure 6E, each prong 129 will be inserted into a hole 20 of the side wall element 12. When the second element 120 needs to be removed from the side wall element 12, an operator will be able to push against the prongs 129 via the openings 127 to push the prongs 129 out of the holes 20 of the side wall element 12. Once the prongs 129 are removed from the holes 20 and the U-shaped bracket 125 is slightly pushed open, the second element 120 can be pulled away from the side wall element 12 to remove the second element 120, and the thereto attached third element 130 from the side wall element 12.

[0097] Figure 6F shows a front view of the side wall element 12 and the second 120 and third 130 element of the locking mechanism as shown in figure 6E. Figure 6G shows a perspective view of the side wall element 12 and the second 120 and third 130 element of the locking mechanism 100 as shown in figures 6E and 6F. The three prongs 129 of the second element 120 are inserted into the three holes 20 of the side wall element 12 thus connecting the second element 120 and thus also the third element 130 to the side wall element 12. As can be seen on the figures 6F and 6G, when the handle 136 will be pushed in the direction of the side wall element 12, the third element 130 will be moved in relation to the second element 120 which remains fixed to the side wall element 12.

[0098] Figure 7A shows a side view of two adjacent side wall elements 14, 16 of a container 1 connected to each other by a first embodiment of a locking mechanism 100 of the present invention. The third element 130 of the locking mechanism 100 being engaged with the first element 110 of the locking mechanism 100 to connect both adjacent side wall elements 14, 16 to each other to form a corner of the container 1. In Figure 7A, the handle 36 of the third element 130 is in its neutral position, such that the two protruding locking elements 132 of the third element 130 are able to lock behind the latches 112 of the first element 110. As can be seen from figure 7A, the protrusions 122 of the second element 120 are inserted into the openings 114 of the first element 110. When the protruding locking elements 132 is locked behind the latches 112 and the protrusions 122 are in position within the openings 114, the two neighbouring side wall elements 14, 16 are locked to each other and unable to move relatively to each other.

[0099] Figure 7B shows a similar side view as shown in figure 7A, whereby the third element 130 is moved in relation to the second element 120 such that the third element 130 is no longer engaged with the first element 110. Thereto, the handle 136 is moved in a direction away from the first element 110, thus effectively releasing the protruding locking elements 132 from the latches 112. When operating the handle 136, the spring elements 134 are compressed such that the entire third element 130 will move in relation to the second element 120. Due to the movement of the entire third element 130, the protruding locking elements 132 of the third element 130 will be retracted from the latches 112 effectively releasing the second 120 and third 130 element. When the locking elements 132 are no longer in contact with the latches 112, the side wall element 14 to which the second 120 and third 130 elements are connected can be moved away from the neighbouring side wall element 16. When moving the side wall element 14 away from the side wall element 16, the protrusions 122 of the second element 120 will be released from the openings 114 of the first element 110, thus completely releasing the first element 110 from the second element 120. When both the protruding locking elements 132 and the protrusions 122 are no longer attached to the first element 110, the first element 110 on the one side and the second 120 and the third 130 element on the other side are no longer connected to each other and the locking mechanism 100 is in an unlocked state.

[0100] When both locking mechanisms 100a, 100b of a container 1 such as the container shown in figure 1A or figure 8 are released, the side wall element 14 can be pivoted inwardly along the groove area 40. As is clear from figure 8, the second 120 and third elements 130 of the two locking mechanisms 100a, 100b are no longer in engaging contact with the first elements 110 of the two locking mechanisms 100a, 100b, such that the side wall element 14 is moveable in relation to the neighbouring side wall elements 12, 16.

[0101] Figure 9 shows a perspective view of a cross section of the first embodiment of the locking mechanism 100a in which the second 120 and third element 130 are engaged with the first element 110 to connect adjacent side wall elements 14, 16 to each other, similar to the locking mechanism as shown in figure 7A.

[0102] As is visible from figure 9, each spring element 134 is ellipse shaped and able to be compressed when the handle 136 of the third element 130 is pushed in the direction of the side wall element 14 to which the third element 130 is connected. Further, each spring element 134 comprises a locking pin 138 positioned on the top of the spring element 134, the locking pin 138 being able to be pushed inside a catch 123 foreseen in the slots 124 in the second element 120. When the locking pins 138 are inserted inside the catches 123, the third element 130 is moveably connected to the second element 120, preventing the release of the third element 130 from the second element 120. Further, it is clear from figure 9 that, when the spring elements 134 of the third element 130 are not compressed, the protruding locking elements 132 are extended inside the latches 112 of the first element 110, effectively preventing the movement of the side wall element 14 in the direction of the arrow indicated by X. Likewise, the protrusions 122 are inserted into the openings 114 and due to the shape of the openings 114, movement of the side wall element 16 in the direction of the arrow indicated by Z is prevented.

[0103] Figure 10 shows a perspective view of another cross section of the first embodiment of the locking mechanism 100, in which the second 120 and third element 130 are engaged with the first element 110 to connect both adjacent side wall elements 14, 16 to each other. As is clear from figure 10, the U-shaped bracket 115 is placed around the edge of the side wall element 16, having a first arm 116 positioned on the side of the side wall element 16 faced to the outside of the container 1, while a second arm 118 is positioned on the side of the side wall element 16 faced to the inside of the container 1. Two of the three openings 117 are show which provide access to the prongs 119 (not shown) such that the prongs 119 can be pushed outside the holes 20 (not shown) of the side wall element 16 if necessary. Likewise, the U-shaped bracket 125 is placed around the edge of the side wall element 14, having a first arm 126 positioned on the side of the side wall element 14 faced to the outside of the container 1, while a second arm 128 is positioned on the side of the side wall element 14 faced to the inside of the container 1. Two of the three openings 127 are show which provide access to the prongs 129 (not shown) such that the prongs 129 can be pushed outside the holes 20 (not shown) of the side wall element 14 if necessary.

[0104] The cross section of figure 10 shows that the free ends of the protruding locking elements 132 are slightly bended such that a secure connection can be established between the protruding locking element 132 and its corresponding latch 112. A skilled person will understand that any shape of the free end of the protruding locking element may be possible, as long as the protruding locking element 132 can lock itself with the latch 112.

[0105] Figure 11 shows a top view of similar cross section of the first embodiment of the locking mechanism 100 as shown in figure 10.

[0106] Again, the slightly bended free end of the protruding locking element 132 is visible and inserted into the latch 112 to prevent movement of the side wall element 14 in the X-direction. Movement of the side wall element 16 in the Z-direction is prevented by the interlocking of the protrusions 122 in the openings 114.

[0107] Figure 12A-12D show an alternative, second embodiment of a locking mechanism 100', typically used when the adjacent side wall elements are in the same plane. In figure 12A, the locking mechanism 100' is shown from the outside of the container 1, the second 120 and third 130 element being engaged with the first element 110' to connect both adjacent side wall elements 14a, 14b to each other. Figure 12B shows the locking mechanism 100' as shown in figure 12A from the inside of the container. As can be seen, all parts of the second embodiment of the locking mechanism 100', being the first 110', second 120 and third 130 element are now positioned such that they can fulfil the same function as the first 110, second 120 and third 130 element of the locking mechanism 100 of the first embodiment. When comparing the first element 110 of the first embodiment of the locking element 100 with the first element 110' of the second embodiment of the locking element 100', it is clear that the openings 114 are positioned differently, allowing the protrusions 122 of the second element 122 to again enter the openings 114. Due to the mutual dimensions of the openings 114 and respective protrusions 122, a close fit is accomplished between the openings 114 and the protrusions 122, thus preventing movement of the adjacent side wall elements 14a, 14b. Further, the protruding locking elements 132 of the third element 130 is able to lock behind the latches 112 of the first element 110', similar to the protruding locking elements 132 and latches 112 of the first embodiment of the locking mechanism 100.

[0108] In figure 12C, the locking mechanism 100' similar to the locking mechanism 100'of figure 12A is shown, with the third element being moved in relation to the second element as to disengage the first and third element from each other. Figure 12D shows the locking mechanism 100' as shown in figure 12C from the inside of the container. As can be seen from figure 12D, the protruding locking elements 132 of the third element 130 have been retracted from the latches 112 of the first element 110' by the movement of the third element 130 relative to the second element 120. When the third element 130 is moved and the protruding locking elements 132 removed from the latches 112, the side wall element 14b is able to be moved relatively to the side wall element 14a. When moving, the protrusions 122 can be pulled out of the openings 114 such that the locking mechanism 100' is unlocked.

[0109] Although the locking mechanism is explained in relation to a first and second embodiment, the skilled person will understand that the position of the different part such as the latches 112, openings 114, protrusions 122, and protruding locking elements 132 can be changed in order to accommodate for differently positioned side wall elements.

[0110] It is further to be understood that the order of the manipulating steps as shown or explained in relation to any of the figures 1A to 12D are not limited to this particular order and can be exchanged freely.

[0111] Figure 13A shows a perspective view of the locking mechanism 100, 100' in the unlocked state, illustrating the relative positioning of the components prior to engagement. The locking mechanism is configured to releasably connect two adjacent side wall elements 12, 14, 14a, 14b, 14c, 16, 18 of a container. In this unlocked state, the protruding locking element 132 remains in a protruding state and is configured to releasably engage with the latch 112 to lock the first element 110, 110' with the second element 120, thereby preventing movement of the first side wall element relative to the second side wall element when locked. Figure 13B shows a perspective view of a cross-section of the locking mechanism in the unlocked state, providing a clearer view of the internal configuration. The protruding locking element 132 is shown in its protruding state, ready to engage with the latch 112 when alignment between the elements is achieved.

[0112] Figure 14A shows a perspective view of the locking mechanism when transitioning from the unlocked state to the locked state, illustrating how the components interact during engagement. Figure 14B shows a perspective view of a cross-section of the locking mechanism in the same transitional phase, providing detailed insight into the internal movement of the elements.

[0113] During this transition, the protruding locking element 132 is configured to automatically engage behind the latch 112 to secure the first element 110, 110' to the second element 120. As the side wall elements are moved from the unlocked to the locked state, typically by bringing them into aligned or adjacent positions, the protruding locking element 132 comes into contact with the latch 112.

[0114] Upon contact, the protruding locking element 132 is pushed inward, in the direction of the second element 120, by the opposing surface of the latch 112. This inward displacement is facilitated by a chamfered edge 133 formed on the protruding locking element 132. The chamfered edge 133 provides a sloped surface that smoothly interacts with the latch 112, reducing resistance and guiding the protruding locking element 132 inward into its retracted position during engagement.

[0115] As shown in Figures 15A and 15B, once the protruding locking element 132 passes beyond the latch 112, a biasing force or mechanical configuration causes the protruding locking element 132 to return to its protruded state, moving back outward to engage behind the latch 112. This action securely locks the first element 110, 110' to the second element 120, preventing relative movement between the connected side wall elements. In this locked state, the locking element 132 remains in a protruded state. The engagement between the protruding locking element 132 and the latch 112 occurs automatically when connecting two adjacent side wall elements 12, 14, 14a, 14b, 14c, 16, 18, without the need for manual intervention or tools. This allows for a quick, secure, and consistent locking action with each assembly cycle. The chamfered edge 133 of the protruding locking element 132 facilitates smooth contact and inward displacement during engagement of the protruding locking element 132 with the latch 112, which in turn reduces mechanical stress and wear, thereby enhancing the long-term reliability and durability of the locking mechanism.

[0116] In certain embodiments, the first element 110, 110' may further comprise a stopper element 113. This stopper element 113 can be positioned on the first element 110, 110' at a predetermined distance from the latch 112. The stopper element 113 can be configured to cooperate with the latch 112 to create a defined recess or seat for the protruding locking element 132 when the locking mechanism is in the locked state. Specifically, the distance between the latch 112 and the stopper element 113 is preferably dimensioned to closely accommodate the protruding locking element 132. By securing the protruding locking element 132 between the latch 112 and the stopper element 113, any lateral movement or play of the locking element 132 within the locked position is substantially prevented. This configuration enhances the rigidity and stability of the connection between the first and second side wall elements, reducing potential vibration and increasing the overall security of the lock against accidental disengagement. In a preferred arrangement, the geometry of the space formed between the latch 112 and the stopper element 113 is such that at least the chamfered edge 133 of the protruding locking element 132 is received and constrained within this space. This precise fit ensures a positive and secure engagement, further contributing to the robustness of the locking mechanism.

Claims

1. A locking mechanism (100, 100') for releasably connecting two adjacent side wall elements (12, 14, 14a, 14b, 14c, 16, 18) of a container (1), wherein the locking mechanism (100, 100') comprising: - a first element (110, 110') connectable to a first side wall element, the first element (110, 110') comprising at least one latch (112); - a second element (120) connectable to a second side wall element, and - a third element (130) movably connected to the second element (120), the third element (130) comprising at least one protruding locking element (132), wherein the at least one protruding locking element (132) being configured to releasably connect with the at least one latch (112) to lock the first element (110, 110') with the second element (120) such that movement of the first side wall element relative to the second side wall element is prevented, wherein the at least one protruding locking element (132) is configured to automatically engage behind the latch (112) to lock the first element (110, 110') to the second element (120) when moving the side wall elements from the unlocked to the locked state.

2. The locking mechanism (100, 100') according to claim 1, wherein the at least one protruding locking element (132) is configured to remain in a protruded state in both the unlocked and locked state, and is further configured to be pushed inward in the direction of the second element (120) by the latch (112) when transitioning from the unlocked position to the locked position, such that contact between the protruding locking element (132) and the latch (112) causes inward displacement of the protruding locking element (132).

3. The locking mechanism (100, 100') according to claim 2, wherein the at least one protruding locking element (132) comprises a chamfered edge (133) configured to make contact with the latch (112) during movement from the unlocked state to the locked state, such that the chamfered edge (133) facilitates inward displacement of the protruding locking element (132) when engaging with the latch (112).

4. The locking mechanism (100, 100') according to any one of the previous claims, wherein the first element (110, 110') further comprising at least one opening (114), wherein the second element (120) comprising at least one protrusion (122), and wherein the at least one protrusion (122) of the second element (120) being configured to be inserted into the at least one opening (114) of the first element (110, 110') when two adjacent side wall elements are moved as to bring the container (1) from the open to the enclosing configuration.

5. The locking mechanism (100, 100') according to any one of the previous claims, wherein the second element (120) comprising at least one slot (124), wherein the third element (130) comprising at least one spring element (134), and wherein the at least one spring element (134) is configured to be inserted into the at least one slot (124) such that the third element (130) is movably secured to the second element (120).

6. The locking mechanism (100, 100') according to claim 5, wherein the at least one spring element (134) comprising a locking pin (138), wherein the at least one slot (124) comprising a catch (123) to receive the locking pin (138) such that the at least one spring element (134) of the third element (130) is fixed within the at least one slot (124) of the second element (124).

7. The locking mechanism (100, 100') according to claim 6, wherein the at least one spring element (134) is configured to be compressed inside the at least one slot (124) when moving the third element (130) relative to the second element (120).

8. The locking mechanism (100, 100') according to claim 6 or 7, wherein the at least one spring element (134) has an ellipse shape.

9. The locking mechanism (100, 100') according to any one of the previous claims, wherein the first element (110, 110') further comprising at least one U-shaped bracket (115) having a first (116) and a second (118) arm, the first arm (116) comprising at least one opening (117) and the second arm (118) comprising at least one prong (119), and wherein the at least one prong (119) is configured to be inserted into a side wall element to connect the first element (110, 110') of the locking mechanism (100, 100') to the side wall element of the container (1).

10. The locking mechanism (100, 100') according to any one of the previous claims, wherein the second element (120) further comprising at least one U-shaped bracket (125) having a first (126) and a second (128) arm, the first arm (126) comprising at least one opening (127) and the second arm (128) comprising at least one prong (129), and wherein the at least one prong (129) is configured to be inserted into a side wall element to connect the second element (120) of the locking mechanism (100, 100') to the side wall element of the container (1).

11. The locking mechanism (100, 100') according to claims 9 or 10, wherein a side wall element (12, 14, 14a, 14b, 14c,16, 18) of a container (1) comprising at least one hole (20), wherein the at least one hole (20) is configured to allow the insertion of the at least one prong (119, 129) to connect the locking mechanism (100, 100') to the side wall element (12, 14, 14a, 14b, 14c,16, 18).

12. A container (1) being configured to be placed into an enclosing and an open configuration, the container (1) comprising; - a base (10); - at least four side wall elements (12, 14, 14a, 14b, 14c,16, 18), each side wall element being adjacent at least one other side wall element when the container is placed in the enclosing configuration, and - at least one locking mechanisms (100, 100') according to any one of the previous claims, the at least one locking mechanism (100, 100') being configured to releasably connect two adjacent side wall elements when the container (1) is in the enclosing configuration.

13. The container (1) according to claim 12, wherein the container (1) comprising four side wall elements (12, 14, 16, 18) and four locking mechanisms (100a, 100b, 100c, 100d) according to any one of the previous claims 1 to 9, each side wall element being configured to pivot around at least one folding groove (40) such that the container (1) is configured to be placed into the enclosing and the open configuration, wherein the second element (120) of the first locking mechanism (100a) is connected to a first edge of the first side wall element (12), the second element (120) of the fourth locking mechanism (100d) is connected to a second edge of the first side wall element (12), the first element (110) of the first locking mechanism (100a) is connected to a first edge of the second side wall element (14), the first element (110) of the second locking mechanism (100b) is connected to a second edge of the second side wall element (14), the second element (120) of the second locking mechanism (100b) is connected to a first edge of the third side wall element (16), the second element (120) of the third locking mechanism (100c) is connected to a second edge of the third side wall element (16), the first element (110) of the third locking mechanism (100c) is connected to a first edge of the fourth side wall element (18), and the first element (110) of the fourth locking mechanism (100d) is connected to a second edge of the fourth side wall element (18).

14. The container (1) according to any one of the previous claims 12 or 13, wherein the container (1) comprising six side wall elements (12, 14a, 14b, 14c, 16, 18) and two locking mechanisms (100'a, 100'b) according to any one of the previous claims 1 to 9, the side wall element (14b) being configured to be removed from the container (1) such that the container (1) being configured to be placed from the enclosing to the open configuration, wherein the first element (110') of the first locking mechanism (100'a) being connected to a first edge of the first side wall element (14a), the second element (120) of the first locking mechanism (100'a) being connected to a first edge of the second side wall element (14b), the second element (120) of the second locking mechanism (100'b) being connected to a second edge of the second side wall element (14b), and the first element (110') of the second locking mechanism (100'b) being connected to a first edge of the third side wall element (14c).

15. The container (1) according to claim 12, wherein the container (1) comprising five side wall elements (12, 14a, 14b, 16, 18) and two locking mechanisms (100'a, 100'b), at least one side wall element (14b) being configured to pivot around a folding groove (40), such that the container (1) is configured to be placed into the enclosing and the open configuration, wherein the first element (110') of the first locking mechanism (100'a) being connected to a first edge of the first side wall element (14a), the first element (110') of the second locking mechanism (100'b) being connected to a second edge of the first side wall element (14a), the second element (120) of the first locking mechanism (100'a) being connected to a first edge of the second side wall element (14b), and the second element (120) of the second locking mechanism (100'b) being connected to a second edge of the second side wall element (14b).

Images