Method for assembling a truss pillar and a truss module for the truss pillar

Abstract

The present disclosure relates to a method for assembling a truss pillar (16) comprising a plurality of monolithic truss modules (2), each of the truss modules (2) comprises at least three hollow frame elements (4) extending in a first longitudinal direction (L), and stiffening rods(14) integrally connecting the hollow frame elements (4), wherein the hollow frame elements (4), preferably each, have at least one external groove (6) and a receiving space (8) extending in the first longitudinal direction (L); the method comprising the steps: Lining up the truss modules (2) in the first longitudinal direction (L) directly adjacent to one another, with the hollow frame elements (4) of the truss modules (2) aligned to form continuous receiving spaces (8) and the external grooves (6) of each truss module (2) aligned to form at least one continuous groove (6); Inserting of a tube element (34) into each of receiving spaces (8) in the first longitudinal direction (L); Positioning of a first connection device (18) on a first end in the longitudinal direction (L) of the truss pillar (16) and a second connection device (20) on a second end in the longitudinal direction (L) of the truss pillar (16), which is located opposite of the first end in the longitudinal direction (L), whereby openings (27) of truss coupling portions (26) of the first connection device (18) and of the second connection device (20) are positioned in extension with the receiving spaces (8) in such a way that the tube elements (34) are fixed to the truss coupling portions (26) and the truss modules preferably locked in the first longitudinal direction (L); Inserting a banner, preferably a silicone edge graphics, in the continuous groove (6) in the first longitudinal direction (L). The present disclosure further relates to the truss module (2) for said method.

Description

Background of the disclosure

[0001] The present disclosure relates to a method for assembling a truss pillar / a truss system comprising a plurality of truss modules and a truss module for said method.Related Art

[0002] Truss exhibition stands, i.e. truss systems, are widely used for displaying information and presenting those to target audiences and / or customers at trade fairs or exhibitions. In the scope of displaying information, the truss exhibition stands can be equipped with banners. Banners configured as Silicone Edge Graphics (SEG) banners represent one of the highest quality standards with regard to graphics booths and displays. SEG-banners have a thin silicone strip, i.e. a silicon edge, around the perimeter allowing an easy and fast installation and reinstallation.

[0003] The truss systems are often large in size, i.e. more than 30 or 50 square meters, in order to reach a broad number of trade fair and exhibition visitors. In the light of transporting, handling and reusing truss systems, the composition of truss systems of a plurality of truss pillars comprising truss modules, i.e. a modular design, is common practice.

[0004] CN 215 167 181 U e.g. discloses a truss system with a plurality of truss modules arranged to truss pillars. Each of the truss modules comprises four hollow frame elements, wherein a tube element is inserted. The hollow frame elements are essentially cylindrical and extend in a first direction. The hollow frame elements are connected to each other circumferentially by rod portions / stiffening rods being connected to the surface of adjacent hollow frame elements. The truss modules are assembled in a first direction on top of each other to form the truss pillar. In the first direction adjacent truss modules are positioned relative to each other by tube elements.

[0005] The tube elements are inserted in the hollow frame elements. Each of the truss modules comprises a first end and a second end, both comprising open end portions of the hollow frame elements. At the first and the second end, the ends are pressed down by a connection device with positioning sleeves arranged in between the open end portions and the connection device. The number of positioning sleeves equals the number of hollow frame elements and thereby the number of open end portions. A self-tapping screw is drilled / screwed into a through hole of the tube portions to lock and combine the truss modules into the truss pillar. A fixing element, i.e. a handle screw, is provided in the middle of the connection device at both ends of the truss pillar. The fixing element comprises a threaded end being sleeved with an O-shaped rubber ring to prevent the fixing element from falling off.

[0006] CN 214 752 791 U discloses a foldable truss structure in the technical field of display equipment. The foldable truss structure is composed by truss modules with square column frame elements. The square column frame elements are fixed to a rigid connector device by means of four fixation elements. Thereby, the fixation elements are configured with a handle portion.

[0007] The prior art shows the disadvantage of long assembly times, being related to the truss assembly with a plurality of components to be assembled and in particular also the assembly with a plurality of fixing devices (like handle screw systems). Therefore, the user comfort is reduced.Brief description of the disclosure

[0008] The tasks and objectives of the present disclosure are to eliminate or at least to reduce the disadvantages of the related art. In particular, an assembly method for a truss pillar shall be provided that enables fast and error-free assembly of the truss pillar. Further, a truss module for such a method shall be provided.

[0009] The tasks and objectives of the present disclosure are solved by a method for assembling a truss pillar and a truss module for said truss pillar. In particular, the tasks and objectives of the present disclosure are solved by the method in accordance with the independent claim 1 and the truss module in accordance with the subsidiary claim. Advantageous embodiments are claimed in the dependent claims and / or are explained below.

[0010] In detail said tasks and objectives are solved by a method for assembling a truss pillar and / or a truss system comprising a truss pillar. The truss pillar comprises / is formed by a plurality of monolithic truss modules, each of the truss modules comprises at least three hollow frame elements extending in a first longitudinal direction. Further, each of the truss modules comprises stiffening rods integrally connecting the hollow frame elements. The hollow frame elements, preferably each of the hollow frame elements, comprises one, preferably two, external grooves extending in the first longitudinal direction.

[0011] The method comprises a step of: Lining up the truss modules in the first longitudinal direction directly adjacent to one another, with the hollow frame elements of the truss modules aligned to form continuous receiving spaces and the external grooves of the truss modules aligned to form at least one continuous groove.

[0012] Further, the method comprises a step of: Inserting of a tube element into each of continuous receiving spaces in the first longitudinal direction.

[0013] Further, the method comprises a step of: Positioning of a first connection device on a first end in the longitudinal direction of the truss pillar / the lined up truss modules and a second connection device on a second end in the longitudinal direction of the truss pillar / the lined up truss modules, which is located opposite of the first end in the longitudinal direction, whereby openings of truss coupling portions of the first connection device and of the second connection device are positioned in extension with the receiving spaces in such a way that the tube elements are locked in the receiving space.

[0014] Further, the method comprises a step of: Inserting a banner, preferably a silicone edge graphics, in (one of the) the continuous groove(s) in the first longitudinal direction.

[0015] According to the present disclosure, a truss pillar is a columnar truss pillar or a columnar sequence of truss pillars.

[0016] A truss system is referred to in the context of this disclosure if there are intersections, angles or branches in the truss pillar(s) or in between the combination of several truss pillars. It is to be understood that all statements made in the course of this disclosure for the truss pillar shall also apply to the truss system if this makes technical sense and vice versa. In other words, all aspects of the present disclosure are also intended to apply to a corresponding truss system, which may be claimed independently, and the embodiments are not duplicated for reasons of readability.

[0017] The claimed method is a method to combine / assemble / mount a plurality of monolithic truss modules together to form the truss pillar.

[0018] Monolithic is to be understood as meaning that each of the truss modules is formed from a single (uninterrupted and continuous) integral piece of material.

[0019] A cross-sectional face of each of the hollow frame elements, which is oriented transversely / perpendicular to the first longitudinal direction, is preferably constant in shape and size over an extension of the hollow frame element in the first longitudinal direction.

[0020] Preferably, the hollow frame elements of the truss module are arranged in corners of the truss module in a plain view of the truss module in the first longitudinal direction.

[0021] Each of the monolithic truss modules comprises at least three, preferably four, of the hollow frame elements. The hollow frame elements are beam or post geometries that extend in the first longitudinal direction. Each of the hollow frame elements has a receiving space that extends through the hollow frame element in the first longitudinal direction, preferably with a constant cross-sectional area / geometry. The receiving space is preferably a circular cylindrical recess.

[0022] The hollow frame elements are connected to each other by the stiffening rods. Preferably, adjacent hollow frame elements are connected to each other by the stiffening rods. However, there are also conceivable embodiments in which opposing hollow frame elements are connected to each other by the stiffening rods.

[0023] At least one of the hollow frame elements of the truss module comprises at least the one external groove extending in the longitudinal direction. Preferably, each of the hollow frame elements comprises at least one external groove. Further preferably, more than one external groove may be comprised in each hollow frame element. The external groove is a slit-shaped recess extending from a surface of the hollow frame element into the hollow frame element. The external groove preferably has a constant groove depth and groove width. However, embodiments in which the groove width and / or the groove depth is (locally) reduced are also conceivable.

[0024] In the first step of the claimed method of the present disclosure, the truss modules are aligned next to each other. The truss modules are lined up one behind the other or one on top of the other in the first longitudinal direction and brought into contact.

[0025] Specifically, the truss modules are lined up in such a way that the hollow frame elements of the adjacent truss modules are aligned. Further, the hollow frame elements are lined up in such a way that the receiving spaces of the adjacent hollow frame elements form a continuous receiving space. That is, all middle fibers of the receiving spaces of adjacent hollow frame elements correspond to each other. Furthermore, the hollow frame elements are lined up in such a way that the external grooves of the adjacent hollow frame elements form a continuous groove.

[0026] The continuous receiving space preferably has a constant cross-sectional area over the entire longitudinal extension of the lined-up truss modules in the first longitudinal direction. The continuous groove preferably has a constant groove depth and groove width over the entire longitudinal extension of the lined-up truss modules in the first longitudinal direction.

[0027] In the second step, the tube element is inserted into the continuous receiving space of the lined-up truss modules. In other words, a tube element is introduced / inserted / placed into each of the continuous receiving spaces.

[0028] The tube element is a tube, preferably made of metal, especially preferably made of aluminum, whose outer diameter essentially corresponds to the inner diameter of the continuous receiving space or is slightly smaller. The tube element preferably has a constant wall thickness and / or a constant outer diameter over its entire length.

[0029] The length of the tube element essentially corresponds to the longitudinal extension of the continuous receiving space of the lined-up truss modules in the first longitudinal direction. Preferably, the length of the tube element is slightly longer than the longitudinal extension of the continuous receiving space of the lined-up truss modules.

[0030] Alternatively, the truss modules comprising the receiving spaces in the hollow frame elements can be stacked on the tube elements one after the other. In other words, the tube elements act as a stacking aid on which the truss modules with the hollow frame elements can be threaded one after the other. In this case, the first step and the second step are executed alternately in a repeating fashion for each of the hollow frame elements. This mean that according to the present disclosure the first step and the second step may be performed! executed at the same time, i.e. the first step is not necessarily a step which is finished before the second step is performed / executed.

[0031] In the third step, the first connection device is placed / positioned at the first end in the longitudinal direction of the lined-up truss modules and the second connection device is placed / positioned at the second end in the longitudinal direction of the lined-up truss modules.

[0032] The first and second connection device are end plates of the truss pillar, which contain or accommodate fixing elements to attach the truss pillar.

[0033] In other words, the first and second connection devices are devices that are provided and configured to connect the truss pillar to other truss pillars, preferably via a coupling element such as a rigid connector device, or other elements, such as a connection cube.

[0034] A connection cube is a corner element that is provided and configured to form a corner section of a truss system by fixing truss pillars to the side surfaces of the connection cube that are angled at 90° to each other.

[0035] Each of the first and second connection devices has a number of truss coupling portions, which corresponds to a number of hollow frame elements of the truss module. These truss coupling portions are arranged in a pattern, which corresponds to an arrangement of the continuous receiving spaces of the truss module in the plain view in the direction of the first longitudinal direction. Specifically, the truss coupling portions each have one opening, wherein the openings are arranged so that they are aligned with the openings of the continuous receiving spaces of the truss modules in the plain view in the direction of the first longitudinal direction.

[0036] The tube elements in the continuous receiving spaces are coupled / connected / locked / linked by the first and second connection devices. In other words, the first and second connection device are coupled to each other by the tube elements, wherein the tube elements carry! support the truss modules. The truss modules, the tube elements and the first and second connection devices form a linked unit in the form of the truss pillar.

[0037] In the fourth step, the banner, which is preferably a silicone edge graphics, is inserted in (one of) the continuous grooves of the truss pillar in the longitudinal direction. Specifically, the banner is inserted into one of the continuous grooves, starting from one of the ends, that is starting from the first connection device or starting from the second connection device, and then pulled into the longitudinal direction of the groove so that one edge of the banner, preferably a silicone edge of the banner, is received and fixed in the continuous groove. The fixation can be a force-fit and / or form-fit fixation.

[0038] With this method, a truss pillar can be easily, safely and cost-effectively assembled. The monolithic design of the truss modules makes it easy to assemble the truss pillar for a single person, since the hollow frame elements of the individual truss modules are fixed in a defined way in respect to each other. Furthermore, the risk of incorrect assembly can be efficiently prevented.

[0039] In a first aspect, in the third step, the first connection device and the second connection device may be positioned such that end portions of the tube element protrude through the openings of the truss coupling portions.

[0040] In other words, the extension of the tube element in the longitudinal direction may be larger than the extension of the continuous receiving space in the longitudinal direction. In yet other words, the tube element can be a positioning aid for the first connection device and the second connection device, and the openings of the first and second connection devices can be threaded onto the tube element / the tube element can be inserted into the openings of the first and second connection devices during the assembly process.

[0041] This helps to prevent the first connection device and the second connection device from moving out of place during installation, which also makes the assembly process easier, while also speeding the assembly process up and making it safer.

[0042] In another aspect, the method may comprise a further step after the third step of: (re)forming end portions of the tube element so that the end portions of the tube element are connected to the openings of the truss coupling portion by means of force and / or form fit.

[0043] In other words, the end portions of the tube element may be worked / formed in such a way that a force-fit and / or form-fit connection is created between the tube element(s) and the first and second connection device.

[0044] The end portions are to be understood in particular as the end portions of the tube element in the longitudinal direction of the tube element. For example, the end portions can extend a few mm to a few cm from the ends of the tube element. In an assembled state, the end portions may extend into or beyond the openings of the truss coupling portion.

[0045] By forming the end portions, a secure and non-detachable connection can be created without the need for additional connecting elements. This further reduces costs and assembly work. The expression "non-detachable" means that the truss pillar can only be detached by destroying it.

[0046] In another aspect, the forming of the end portions may be a widening of the end portions of the tube element, wherein a diameter of the end portion is widened such that its diameter is, at least at its widest point, larger than a diameter of the opening of the truss coupling portion.

[0047] In other words, the forming may be a spreading / radius enlargement of the tube element. The widening may preferably be a linear widening over the longitudinal extent of the end portion. The linear widening can prevent stress peaks and thus cracking of the tube element.

[0048] Preferably, press cones can be inserted / pressed into the end portions of the tube elements and thereby the first connection device, the second connection device and the tube elements can be pressed together, whereby the end portions of the tube element are widened and reshaped.

[0049] The widening enables a uniform transmission of force between the first and second connection device and the tube element and can be carried out easily and repeatedly.

[0050] In another aspect, in the forming process a (pressing) force may be applied in the first longitudinal direction and the truss modules may be fixed in a preloaded state between the first connection device and the second connection device.

[0051] In other words, in the forming process, the force in the longitudinal direction may be applied in such a way that the truss modules elastically deform and may be fixed in the elastically deformed state between the first and second connection devices connected via the tube elements.

[0052] By means of such a preloaded / pretensioned fixing / mounting of the truss pillar, the truss pillar can absorb larger forces. Further, slipping of the truss modules and therefore wear can be prevented and a handling can be improved by avoiding edges and transitions on the truss pillar.

[0053] In another aspect, the method may comprise a further step before the insertion of the banner of: connecting the first connection device to a rigid connector device via a first fixing element of the first connection device, preferably by means of screwing the fixing element into the rigid connector device in the first longitudinal direction.

[0054] In other words, the method may comprise a step of connecting the truss pillar via the first fixing element mounted / attached to / provided in the first connection device to the rigid connector device in order to combine several of the truss pillars to one large truss pillar.

[0055] The connection device may be configured with a spring element that pretensions the fixing element in such a way that the fixing element is arranged in a preferred mounting position in / on the connection device. In other words, the fixing element can be pressed / tensioned in the first longitudinal direction by the spring element, making it much easier for an operator to screw in the fixing element.

[0056] The spring element is preferably arranged around a connecting portion of the fixing element and is preferably provided and configured to hold the fixing element in a predetermined (and pretensioned) position relative to a remainder of the connection device.

[0057] The spring element is preferably a compressible element which may be pre-stressed / pre-tensioned in dependence on the pitch of the spring element and thereby a spring rate.

[0058] In one aspect, the spring element can abut against a stop of the connection device and against a shaft shoulder or a locknut element of the fixing element.

[0059] The stop may be formed on a stiffening element of the connection device, a sleeve flanged or connected to the connection device or a polymeric housing of the connection device.

[0060] In the pre-stressed / pre-tensioned state, the spring element may be configured to hold the fixing element via the locknut element in its position.

[0061] The rigid connector device is a, preferably essentially planar, connector that is provided and configured to connect two of the truss pillars on front end sides / end sides, i.e. on sides of the connection device(s).

[0062] Further, the method may comprise another step thereafter, wherein a second truss pillar is connected to the rigid connector device via a third connection device of the second truss pillar, preferably by means of screwing a second fixing element into the rigid connector device in the longitudinal direction.

[0063] This additional assembly step allows a (large) number of truss pillars to be combined to form a (combined) truss pillar of any size, in order to adapt the truss pillar in its size to the desired application.

[0064] In another aspect, the rigid connector device may comprise at least one, preferably several, external groove section(s), which may align with the adjacent external grooves of the truss modules to form the continuous groove when mounted to the truss pillar.

[0065] In other words, the rigid connector may comprise the groove section(s), preferably in circumferential wall sections of the rigid connector device. The groove width and groove depth of the groove sections can preferably correspond to the groove width and groove depth of the external groove or the continuous groove formed by the (multiple) external grooves.

[0066] Such a design of the rigid connector device can further facilitate the assembly process of the truss pillar. In particular, it facilitates threading the banner into the continuous groove and prevents the banner from getting stuck during the threading process.

[0067] In another aspect, the method may comprise a step of connecting the first connection device to a connection cube, wherein the connection cube is provided to be connected to the truss pillar via a first fixing element of the first connection device, preferably by means of screwing the fixing element into the rigid connector device in the first longitudinal direction.

[0068] This step is preferably carried out before the banner is inserted into the continuous groove.

[0069] The connection cube can be connected to the truss pillar instead of the rigid connector device or in addition to the rigid connector device. The connection cube forms a corner piece / crossing piece for two, three, four, five or even six of the truss pillars, in particular to form a truss system from the truss pillars.

[0070] The present disclosure also relates to the truss module for the method described above. It should be expressly noted that this truss module can also be claimed independently within the scope of the present disclosure.

[0071] In particular, the present disclosure also relates to the truss module for the method described above. The truss module comprises at least three hollow frame elements extending in the first longitudinal direction and the stiffening rods integrally connecting the hollow frame elements, wherein the hollow frame elements, preferably each, have the external grooves extending in the first longitudinal direction and wherein the truss module is formed integrally monolithic.

[0072] In other words, the truss module comprises the at least three hollow frame elements. In a plain view, the hollow frame elements preferably have a rectangular, in particular a square, base or peripheral geometry in the direction corresponding to the first longitudinal direction. The hollow frame elements comprise the receiving space, which extends in the longitudinal direction, preferably as a circular cylindrical cavity in the hollow frame element.

[0073] Preferably, the receiving space has a constant cross-sectional area or a constant radius over the longitudinal extent of the receiving space.

[0074] Embodiments are also conceivable in which the receiving space has (local) constrictions. Furthermore, embodiments are conceivable in which the receiving space has an oval, triangular, rectangular or polygonal cross-sectional area.

[0075] The truss module comprises stiffening rods that connect the hollow frame elements (to each other). The stiffening rods are formed on the outer walls of the hollow frame elements. In other words, the stiffening rods extend from the outer surface of the hollow frame elements. The stiffening rods are integrally formed with the hollow frame elements. In other words, the hollow frame elements are connected to the stiffening rods without any joints. In yet other words, the hollow frame elements are formed monolithically and in one piece with the stiffening rods.

[0076] The at least one external groove is formed in at least one of the hollow frame elements of the truss module. Preferably, the at least one external groove can be formed in each of the hollow frame elements. More preferably, more than one external groove can be formed in each of the hollow frame elements.

[0077] The external groove extends over the entire length of the hollow frame element. Preferably, the external groove extends over the length of the hollow frame element with a constant groove depth and constant groove width.

[0078] There are also conceivable embodiments in which the groove depth and / or the groove width (locally) may change over the longitudinal extension of the groove in the first longitudinal direction. In this way, the groove depth and / or the groove width can be narrowed! constricted (locally), for example, to implement an additional fastening or a stop or a latch.

[0079] Alternatively or additionally, the groove depth and / or the groove width can be widened (locally), for example, to form a recess for easier removal of the banner from the external groove.

[0080] The entire truss module is a single piece. That is, the entire truss module is molded in one piece. In other words, the truss module is made with no joints. In still other words, the truss module is monolithic. In yet other words, the hollow frame elements, the stiffening rods and the external groove(s) are preferably formed monolithically and in one piece, thus forming an integral, one-piece and one-material truss module.

[0081] The truss module is thus preferably (formed from) a single piece of material.

[0082] On the one hand, such a configuration of the truss module eliminates the weak points that occur at joints. Furthermore, the truss module can be produced in large quantities at a low cost. In addition, all truss modules are reliably identical, which makes assembly considerably easier, since any adjustments and rework on the truss modules are not required. Furthermore, it is possible to prevent errors from occurring during the assembly of the truss modules, for example, that the stiffening rods are not sufficiently fixed to the hollow frame elements.

[0083] According to an especially preferred embodiment, the truss module may be formed by injection molding from plastic material.

[0084] In other words, the truss module may especially preferred be an injection-molded part that is produced from a plastic material in an injection mold using an injection molding process.

[0085] Consequently, the truss modules can be produced cost-effectively in large numbers.

[0086] The method according to the present disclosure may comprise a previous step of injection molding the truss module(s) as (a) single / integral piece(s) from plastic material.

[0087] In another aspect, the truss module may contain four of the hollow frame elements and the truss module may have a cubic geometry, preferably with an edge length of 150 mm.

[0088] In other words the truss module may have the four hollow frame elements, which, in a plain view in the direction of the first longitudinal direction, can be arranged in a square, specifically in the corners of a square. A side length of this square can be 150 mm. An extension of the truss module in the longitudinal direction can also be 150 mm.

[0089] The cube geometry or square geometry in the top view can further speed up and simplify the assembly process, as less attention needs to be paid to the orientation of the truss module during the assembly process. Furthermore, the truss modules can be stored and transported more easily in an unassembled state (in boxes and containers).

[0090] In another aspect, the truss pillar may have an extension in the first longitudinal direction of 600 mm. In other words, the truss pillar may comprise four truss modules stacked on another in the longitudinal direction.

[0091] The height of 600 mm is a size that is adaptable / compatible with standard industrial dimensions. Reusable transport containers often have a dimension of 600 mm and standard (Euro) pallets have a length of 1200 mm, which means that standard shipping sizes can be booked / used when transporting the truss pillar, which significantly reduces logistics costs.

[0092] In another aspect, each of the hollow frame elements may comprise two grooves, which extend at 90° to each other regarding an extension direction in the groove depth direction and have a common groove opening in a corner section of the hollow frame element.

[0093] In other words, the hollow frame element of the truss module may have a cut out in a corner section of the hollow frame element. That is, in the top view of the hollow frame element, one corner of the hollow frame element can be the cut out at an angle of 45° and form a (common / joint) opening for the two grooves in the hollow frame element. In the plain view, the grooves extend from the groove opening parallel to the side edges / walls of the hollow frame element.

[0094] By forming the grooves in said way, the truss module and thus the truss pillar can be used flexibly and the banner can be clamped into the truss pillar in different orientations.

[0095] The grooves are formed in one piece in the hollow frame element.

[0096] In another aspect, the stiffening rods may be made from solid material and extend monolithically at a 45° angle between adjacent hollow frame elements with reference to the first longitudinal direction, whereby each hollow frame element is coupled with two stiffening rods.

[0097] In other words, the stiffening rods may link the adjacent hollow frame elements in such a way that, in the plain view, the stiffening rods run along (imaginary) edges of the square (or of another geometry, such as a triangle) defined by the hollow frame elements. The stiffening rods may be made of solid material.

[0098] Embodiments in which the stiffening rods have an (inner) framework structure or recesses are also conceivable.

[0099] An enclosed angle between a surface of the hollow frame element and a center fibre of the stiffening rod, which runs in the direction of extension of the stiffening rod, is approx. 45°.

[0100] Each of the hollow frame elements may be monolithically coupled or formed with two stiffening rods. The stiffening rods preferably extend from surfaces that are not in proximity to the grooves.

[0101] In another aspect, the stiffening rods may be angled alternately in a circumferential direction.

[0102] In other words, the two stiffening rods formed monolithically on the hollow frame element may extend away from the hollow frame element in a substantially V-shape.

[0103] In another aspect, a wall thickness of the hollow frame element may be mainly constant. In other words, the wall thickness of the hollow frame element may be constant except for slight variations, for example, at wall transitions.

[0104] In another aspect, a number of the stiffening rods of the truss module correspond to a number of the hollow frame elements of the truss module.Brief description of the figures

[0105] The disclosure is explained in more detail below using preferred embodiments and referring to the accompanying figures. Fig. 1 shows a monolithic truss module according to the present disclosure in a first perspective view; Fig. 2 shows the monolithic truss module according to the present disclosure in a second perspective view; Fig. 3 shows the monolithic truss module according to the present disclosure in a side view; Fig. 4 shows the monolithic truss module according to the present disclosure in a top / plain view; Fig. 5 shows a truss pillar comprising the monolithic truss modules in a perspective view assembled according to a method of the present disclosure; Fig. 6 shows the truss pillar comprising the monolithic truss modules in a side view; Fig. 7 shows an enlarged detailed sectional view of a corner section of the truss pillar; Fig. 8 shows a side view of two truss pillars connected to each other and a connection cube; and Fig. 9 shows a connection device for connecting the two truss pillars to each other and / or the truss pillar to the connection cube.

[0106] The figures are schematic in nature and serve only to understand the disclosure. Identical elements are marked with the same reference signs. The features of the different embodiments can be interchanged among each other.Detailed description of preferred embodiments

[0107] Fig. 1 to Fig 4 show different views of the monolithic truss module 2 according to the present disclosure. Fig. 1 is a first perspective view of the truss module 2, Fig. 2 is a second perspective view of the truss module 2, Fig. 3 is a side view of the truss module 2 and Fig. 4 a top view of the truss module 2. In the following, the structure of the truss module 2 is explained in more detail with reference to Fig. 1 to Fig. 4.

[0108] The truss module 2 comprises four hollow frame elements 4, extending in a first longitudinal direction L. Each of the hollow frame elements 4 has a pole or pillar geometry. The four hollow frame elements 4 are arranged in a square to each other. In other words, the hollow frame elements 4 are arranged in the corners of a square base area arrangement of the monolithic truss module 2 and extend away from the square base area arrangement. Each of the hollow frame elements 4 comprises two external grooves 6 and a receiving space 8 extending in the first longitudinal direction L. The two external grooves 6 have a common / joint groove opening 10 in a corner section of the hollow frame element 4. The joint groove opening 10 is configured as a slot or recess running in the first longitudinal direction L along one corner of the hollow frame element 4. In the present embodiment, the joint groove opening 10 is configured as a kind of 45° phase that opens the two external grooves 6 to an environment surrounding the truss module 2.

[0109] The two external grooves 6 extend at a 90° angle to each other. In the embodiment shown here, the two grooves 6 extend parallel to outer side walls 12 of the hollow frame element 4. The two external grooves 6 are essentially uniform in shape. In other words, the two external grooves 6 are formed with an identical groove width and groove depth. The groove width and groove depth is essentially constant over the longitudinal extent of the external groove 6. The two external grooves 6 extend essentially over the entire extent of the outer side walls 12.

[0110] Further, each of the hollow frame elements 4 comprises the receiving space 8. The receiving space 8 extents in the longitudinal direction L throughout the hollow frame element 4. In other words, the receiving space 8 extends parallel to the two external grooves 6 in the hollow frame element 4. Each of the hollow frame elements 4 is seamlessly integrally formed. This is to say that each hollow frame element 4 integrally forms and includes the receiving space 8 and the two external grooves 6. The receiving space 8 extends with a circular cross-sectional area over the entire longitudinal extension in the longitudinal direction L of the hollow frame element 4. This is to say that a cross-sectional area and thus a diameter and a radius of the receiving space 8 is constant over the longitudinal extension in the first longitudinal direction L. The receiving space 8 of the hollow frame element 4 is provided and configured to receive a tube element (36 in Fig. 7).

[0111] Stiffening rods 14 are formed between the neighboring hollow frame elements 4 of the truss module 2. Specifically, the truss module 2 comprises four stiffening rods 14, which are formed between the hollow frame elements 4. Between two neighboring hollow frame elements 4, one stiffening rod 14 is formed in each instance, which connects the two neighboring hollow frame elements 4. The stiffening rods 14 are formed in one piece / monolithically with the hollow frame elements 4. In other words, there is no joint between the hollow frame elements 4 and the stiffening rods 14. The stiffening rods 14 extend essentially at a 45° angle away from the outer side walls 12 of the hollow frame element 4.

[0112] Each of the stiffening rods 14 is solid. The stiffening rods 14 are orientated alternately in a circumferential direction. In other words, two stiffening rods 14 formed on one of the hollow frame elements 4 form a V-shaped geometry. The stiffening rods 14 are formed in one piece on the side walls of the hollow frame element 4, which do not border the external grooves 6.

[0113] The truss module 2 is an integral injection-molded part made entirely of plastic.

[0114] Fig.5 and Fig. 6 are views of a truss pillar 16, which comprises four truss modules 2. The four truss modules 2 are lined up or stacked in the first longitudinal direction L. The truss modules 2 are stacked in such a way that the stiffening rods 14 form a zig-zag shape in the longitudinal direction L. A first connection device 18 is formed at a first end of the truss pillar 16 in the longitudinal direction L and a second connection device 20 is formed at a second end of the truss pillar 16 in the longitudinal direction L. The first connection device 18 and the second connection device 20 have a substantially cross-shaped geometry and are provided and configured to connect the truss pillar 16 to further elements. Specifically, each of the first connection device 18 and the second connection device 20 includes four arms 22 extending from a common portion 24.

[0115] A truss coupling portion 26 is formed at an end of each of the four arms 22 facing radially outward form the common portion 24. The truss coupling portion 26 has an opening 27. The opening 27 is a circular through-hole. The truss coupling portion 26 will be explained in more detail later on the basis of Fig. 7.

[0116] The common portion 24 of the first connection device 18 is traversed by a first fixing element 28. The common portion of the second fixing device 20 is traversed by a second fixing element 30. The first fixing element 28 and the second fixing element 30 are screw elements each having a handwheel 32 for operating the first fixing element 28 and the second fixing element 30.

[0117] Fig. 7 shows an enlarged sectional view F of Fig. 6. The truss coupling portion 26 rests on a recess 33 of the hollow frame element 4. A diameter of the opening 27 is slightly smaller than a diameter of the receiving space 8. A tube element 34 is disposed in receiving space 8. The tube element 34 is an aluminum tube, which extends in the first longitudinal direction L from the first connection device 18 to the second connection device 20 through the receiving spaces 8 of the hollow frame elements 4.

[0118] The tube element 34 comprises an end portion 36 that is shaped to form a form-fitting connection with the first connection device 18. Specifically, the end portion 36 is designed as a funnel-shaped section, which widens in the shape of a truncated cone over its extent. The end portion widens in such a way that it is in contact with a conical section 38 formed in the opening 27. The end portion 36 is formed on both sides of the tube element 34 and creates a form-fitting connection between the first connection device 18, the second connection device 20 and the tube elements 34. Since the tube elements 34 extend through the receiving spaces 8 of the hollow frame elements 4 of the (here four) truss modules 2, the four truss modules 4 are also connected to the first connection device 18 and the second connection device 20 in a form-fitting manner. The end portions 36 are preferably formed by pressing.

[0119] During the pressing, the truss modules 2 is also tensioned between the first connection device 18 and the second connection device 20.

[0120] Fig. 8 shows two of the truss pillars 16 connected to form a combined truss pillar. The two truss pillars are connected to each other via a rigid connector device 40. A third connection device 46 of the second truss pillar 16 is fixing the second truss pillar 16 to the rigid connector device 40 by means of a third fixing element 48.

[0121] The rigid connector device 40 is a coupling piece in which the fixing elements 28 of the truss pillars 16 are screwed in via the respective hand wheels 32. Furthermore, a connection cube 42 is attached to / with the combined truss pillar. The connection cube 42 is a corner element that allows up to six truss pillars 16 to be connected at an intersection.

[0122] Both the rigid connector device 40 and the connection cube 42 are also designed with grooves so that the external groove 6 of the hollow frame elements 4, and the grooves of the connection cube 42 and the rigid connector device 40 form a continuous groove 44 that can hold a banner, for example a silicone edge graphic. Specifically, the rigid connector device 40 is designed with an external groove section 50, which, when mounted, is aligned with the continuous groove 44.

[0123] A first preferred height L1 of the truss module 2 is 150 mm. A second preferred height L2 of the truss pillar 16 is therefore 600 mm. The dimensions of the truss module 2 are essentially cubic. In other words, the truss module 2 has the dimensions 150 mm x 150 mm x 150 mm.

[0124] Fig. 9 is a cross sectional side view through the connection device 18, 20, 46 being polymeric in-molded. The connection device 18, 20, 46 has a polymeric housing portion 52 and the fixing element 28, 30, 48. The polymeric housing portion 52 is configured with a plurality of pin portions 54 beneath the polymeric housed section of the connection device 18, 20, 46. Each of the pin portions 54 is arranged in a section beneath a pre-defined section of the in-molded connection device 18, 20, 46. The position of the pin portion 54 is set in dependence on and in accordance with corresponding sections of the rigid connector device 40. Each of the plurality of pin portions 54 is configured with a blind hole section 56.

[0125] Fig. 9 shows an intersection portion 58 filled with a polymeric support structure. The polymeric support structure forms a polymeric support structure portion 60. A through hole volume portion 62 is omitted within the polymeric support structure portion 60. The through hole volume portion 62 extends through the intersection portion 58. The through hole volume portion 62 comprises a discontinuous geometry. The discontinuous geometry is preferably pre-defined by the fixing element 28, 30, 48.

[0126] Fig. 9 shows the handwheel 32 of the fixing element 28, 30, 48 contacting a connecting portion 66. The fixing element 28, 30, 48 comprises a screw head section 68, which is embodied as a hexagon screw section 64, a shaft section 70 and a male threaded section 72. On the male threaded section 72 in the interface to the shaft section 70, a locknut element 74 is arranged. The section of the locknut element 74 being orientated towards the shaft section 70 is configured as a second contact section 76 of a spring element 78. A first contact section 80 of the spring element 78 is configured by the polymeric housing portion 52. The spring element 78 is pre-tensioned in between the first contact section 80 and the second contact section 76. The male threaded section 72 is supported in its position by means of the tensioned spring element 78 during screwing the connecting portion 66 into a counterpart. The counterpart is embodied as female threaded section in a rigid nut section of the rigid connector device 40.

[0127] A method for assembling the truss pillar 16 is described below with reference to the figures.

[0128] In a first step, four of the monolithic truss modules 2 are stacked on top of each other in the longitudinal direction L in such a way that the hollow frame elements 4 of the individual truss modules 2 stand on top of each other and the hollow frame elements 4 receiving spaces 8 of the individual hollow frame elements 4 standing on top of each other form a common continuous receiving space 8. The external grooves 6 of the stacked hollow frame elements 4 are then also arranged / positioned in relation to each other so that the continuous grooves are formed.

[0129] In a next step, the four tube elements 34 are inserted into the four continuous receiving spaces 8. That is, each of the tube elements 34 is inserted in the first longitudinal direction L into one of the continuous receiving spaces 8.

[0130] Of course, it is also possible to thread the four truss modules 2 one after the other with the receiving spaces 8 of the hollow frame elements 4 onto the tube elements 34.

[0131] Then, the first connection device 18 and the second connection device 20 are placed on the end portions 36 of the tube elements 34, so that the first connection device 18 and the second connection device 20 form the end caps of the truss module 2.

[0132] In the next step, the end sections 36 are reshaped. Specifically, the end sections 36 are widened to create a form-fitting connection between the tube elements 34 and the first connection device 18 and the second connection device 20, thus fixing the four truss modules form-fittingly between the first connection device 18 and the second connection device 20.

[0133] Several of the truss pillars 16 can then be connected to each other using rigid connector devices 40 and / or connection cubes 42.

[0134] In a final step, the banner can be pulled into the continuous groove 6.List of reference signs

[0135] 2truss module 4hollow frame element 6external groove 8receiving space 10joint groove opening 12outer side wall 14stiffening rod 16truss pillar 18first connection device 20second connection device 22arm 24common portion 26truss coupling portion 27opening 28first fixing element 30second fixing element 32handwheel 33recess 34tube element 36end portion 38conical section 40rigid connector device 42connection cube 44continuous groove 46third connection device 48third fixing element 50external groove section 52polymeric housing portion 54pin portion 56blind hole section 58intersection portion 60polymeric support structure portion 62through hole volume portion 64hexagon screw section 66connecting portion 68screw head section 70shaft section 72thread section 74locknut element 76second contact section 78spring element 80first contact section Lfirst longitudinal direction L1first height L2second height

Examples

Embodiment Construction

[0107]Fig. 1 to Fig 4 show different views of the monolithic truss module 2 according to the present disclosure. Fig. 1 is a first perspective view of the truss module 2, Fig. 2 is a second perspective view of the truss module 2, Fig. 3 is a side view of the truss module 2 and Fig. 4 a top view of the truss module 2. In the following, the structure of the truss module 2 is explained in more detail with reference to Fig. 1 to Fig. 4.

[0108]The truss module 2 comprises four hollow frame elements 4, extending in a first longitudinal direction L. Each of the hollow frame elements 4 has a pole or pillar geometry. The four hollow frame elements 4 are arranged in a square to each other. In other words, the hollow frame elements 4 are arranged in the corners of a square base area arrangement of the monolithic truss module 2 and extend away from the square base area arrangement. Each of the hollow frame elements 4 comprises two external grooves 6 and a receiving space 8 extending in the first...

Background of the disclosure

[0001] The present disclosure relates to a method for assembling a truss pillar / a truss system comprising a plurality of truss modules and a truss module for said method.Related Art

[0002] Truss exhibition stands, i.e. truss systems, are widely used for displaying information and presenting those to target audiences and / or customers at trade fairs or exhibitions. In the scope of displaying information, the truss exhibition stands can be equipped with banners. Banners configured as Silicone Edge Graphics (SEG) banners represent one of the highest quality standards with regard to graphics booths and displays. SEG-banners have a thin silicone strip, i.e. a silicon edge, around the perimeter allowing an easy and fast installation and reinstallation.

[0003] The truss systems are often large in size, i.e. more than 30 or 50 square meters, in order to reach a broad number of trade fair and exhibition visitors. In the light of transporting, handling and reusing truss systems, the composition of truss systems of a plurality of truss pillars comprising truss modules, i.e. a modular design, is common practice.

[0004] CN 215 167 181 U e.g. discloses a truss system with a plurality of truss modules arranged to truss pillars. Each of the truss modules comprises four hollow frame elements, wherein a tube element is inserted. The hollow frame elements are essentially cylindrical and extend in a first direction. The hollow frame elements are connected to each other circumferentially by rod portions / stiffening rods being connected to the surface of adjacent hollow frame elements. The truss modules are assembled in a first direction on top of each other to form the truss pillar. In the first direction adjacent truss modules are positioned relative to each other by tube elements.

[0005] The tube elements are inserted in the hollow frame elements. Each of the truss modules comprises a first end and a second end, both comprising open end portions of the hollow frame elements. At the first and the second end, the ends are pressed down by a connection device with positioning sleeves arranged in between the open end portions and the connection device. The number of positioning sleeves equals the number of hollow frame elements and thereby the number of open end portions. A self-tapping screw is drilled / screwed into a through hole of the tube portions to lock and combine the truss modules into the truss pillar. A fixing element, i.e. a handle screw, is provided in the middle of the connection device at both ends of the truss pillar. The fixing element comprises a threaded end being sleeved with an O-shaped rubber ring to prevent the fixing element from falling off.

[0006] CN 214 752 791 U discloses a foldable truss structure in the technical field of display equipment. The foldable truss structure is composed by truss modules with square column frame elements. The square column frame elements are fixed to a rigid connector device by means of four fixation elements. Thereby, the fixation elements are configured with a handle portion.

[0007] The prior art shows the disadvantage of long assembly times, being related to the truss assembly with a plurality of components to be assembled and in particular also the assembly with a plurality of fixing devices (like handle screw systems). Therefore, the user comfort is reduced.Brief description of the disclosure

[0008] The tasks and objectives of the present disclosure are to eliminate or at least to reduce the disadvantages of the related art. In particular, an assembly method for a truss pillar shall be provided that enables fast and error-free assembly of the truss pillar. Further, a truss module for such a method shall be provided.

[0009] The tasks and objectives of the present disclosure are solved by a method for assembling a truss pillar and a truss module for said truss pillar. In particular, the tasks and objectives of the present disclosure are solved by the method in accordance with the independent claim 1 and the truss module in accordance with the subsidiary claim. Advantageous embodiments are claimed in the dependent claims and / or are explained below.

[0010] In detail said tasks and objectives are solved by a method for assembling a truss pillar and / or a truss system comprising a truss pillar. The truss pillar comprises / is formed by a plurality of monolithic truss modules, each of the truss modules comprises at least three hollow frame elements extending in a first longitudinal direction. Further, each of the truss modules comprises stiffening rods integrally connecting the hollow frame elements. The hollow frame elements, preferably each of the hollow frame elements, comprises one, preferably two, external grooves extending in the first longitudinal direction.

[0011] The method comprises a step of: Lining up the truss modules in the first longitudinal direction directly adjacent to one another, with the hollow frame elements of the truss modules aligned to form continuous receiving spaces and the external grooves of the truss modules aligned to form at least one continuous groove.

[0012] Further, the method comprises a step of: Inserting of a tube element into each of continuous receiving spaces in the first longitudinal direction.

[0013] Further, the method comprises a step of: Positioning of a first connection device on a first end in the longitudinal direction of the truss pillar / the lined up truss modules and a second connection device on a second end in the longitudinal direction of the truss pillar / the lined up truss modules, which is located opposite of the first end in the longitudinal direction, whereby openings of truss coupling portions of the first connection device and of the second connection device are positioned in extension with the receiving spaces in such a way that the tube elements are locked in the receiving space.

[0014] Further, the method comprises a step of: Inserting a banner, preferably a silicone edge graphics, in (one of the) the continuous groove(s) in the first longitudinal direction.

[0015] According to the present disclosure, a truss pillar is a columnar truss pillar or a columnar sequence of truss pillars.

[0016] A truss system is referred to in the context of this disclosure if there are intersections, angles or branches in the truss pillar(s) or in between the combination of several truss pillars. It is to be understood that all statements made in the course of this disclosure for the truss pillar shall also apply to the truss system if this makes technical sense and vice versa. In other words, all aspects of the present disclosure are also intended to apply to a corresponding truss system, which may be claimed independently, and the embodiments are not duplicated for reasons of readability.

[0017] The claimed method is a method to combine / assemble / mount a plurality of monolithic truss modules together to form the truss pillar.

[0018] Monolithic is to be understood as meaning that each of the truss modules is formed from a single (uninterrupted and continuous) integral piece of material.

[0019] A cross-sectional face of each of the hollow frame elements, which is oriented transversely / perpendicular to the first longitudinal direction, is preferably constant in shape and size over an extension of the hollow frame element in the first longitudinal direction.

[0020] Preferably, the hollow frame elements of the truss module are arranged in corners of the truss module in a plain view of the truss module in the first longitudinal direction.

[0021] Each of the monolithic truss modules comprises at least three, preferably four, of the hollow frame elements. The hollow frame elements are beam or post geometries that extend in the first longitudinal direction. Each of the hollow frame elements has a receiving space that extends through the hollow frame element in the first longitudinal direction, preferably with a constant cross-sectional area / geometry. The receiving space is preferably a circular cylindrical recess.

[0022] The hollow frame elements are connected to each other by the stiffening rods. Preferably, adjacent hollow frame elements are connected to each other by the stiffening rods. However, there are also conceivable embodiments in which opposing hollow frame elements are connected to each other by the stiffening rods.

[0023] At least one of the hollow frame elements of the truss module comprises at least the one external groove extending in the longitudinal direction. Preferably, each of the hollow frame elements comprises at least one external groove. Further preferably, more than one external groove may be comprised in each hollow frame element. The external groove is a slit-shaped recess extending from a surface of the hollow frame element into the hollow frame element. The external groove preferably has a constant groove depth and groove width. However, embodiments in which the groove width and / or the groove depth is (locally) reduced are also conceivable.

[0024] In the first step of the claimed method of the present disclosure, the truss modules are aligned next to each other. The truss modules are lined up one behind the other or one on top of the other in the first longitudinal direction and brought into contact.

[0025] Specifically, the truss modules are lined up in such a way that the hollow frame elements of the adjacent truss modules are aligned. Further, the hollow frame elements are lined up in such a way that the receiving spaces of the adjacent hollow frame elements form a continuous receiving space. That is, all middle fibers of the receiving spaces of adjacent hollow frame elements correspond to each other. Furthermore, the hollow frame elements are lined up in such a way that the external grooves of the adjacent hollow frame elements form a continuous groove.

[0026] The continuous receiving space preferably has a constant cross-sectional area over the entire longitudinal extension of the lined-up truss modules in the first longitudinal direction. The continuous groove preferably has a constant groove depth and groove width over the entire longitudinal extension of the lined-up truss modules in the first longitudinal direction.

[0027] In the second step, the tube element is inserted into the continuous receiving space of the lined-up truss modules. In other words, a tube element is introduced / inserted / placed into each of the continuous receiving spaces.

[0028] The tube element is a tube, preferably made of metal, especially preferably made of aluminum, whose outer diameter essentially corresponds to the inner diameter of the continuous receiving space or is slightly smaller. The tube element preferably has a constant wall thickness and / or a constant outer diameter over its entire length.

[0029] The length of the tube element essentially corresponds to the longitudinal extension of the continuous receiving space of the lined-up truss modules in the first longitudinal direction. Preferably, the length of the tube element is slightly longer than the longitudinal extension of the continuous receiving space of the lined-up truss modules.

[0030] Alternatively, the truss modules comprising the receiving spaces in the hollow frame elements can be stacked on the tube elements one after the other. In other words, the tube elements act as a stacking aid on which the truss modules with the hollow frame elements can be threaded one after the other. In this case, the first step and the second step are executed alternately in a repeating fashion for each of the hollow frame elements. This mean that according to the present disclosure the first step and the second step may be performed! executed at the same time, i.e. the first step is not necessarily a step which is finished before the second step is performed / executed.

[0031] In the third step, the first connection device is placed / positioned at the first end in the longitudinal direction of the lined-up truss modules and the second connection device is placed / positioned at the second end in the longitudinal direction of the lined-up truss modules.

[0032] The first and second connection device are end plates of the truss pillar, which contain or accommodate fixing elements to attach the truss pillar.

[0033] In other words, the first and second connection devices are devices that are provided and configured to connect the truss pillar to other truss pillars, preferably via a coupling element such as a rigid connector device, or other elements, such as a connection cube.

[0034] A connection cube is a corner element that is provided and configured to form a corner section of a truss system by fixing truss pillars to the side surfaces of the connection cube that are angled at 90° to each other.

[0035] Each of the first and second connection devices has a number of truss coupling portions, which corresponds to a number of hollow frame elements of the truss module. These truss coupling portions are arranged in a pattern, which corresponds to an arrangement of the continuous receiving spaces of the truss module in the plain view in the direction of the first longitudinal direction. Specifically, the truss coupling portions each have one opening, wherein the openings are arranged so that they are aligned with the openings of the continuous receiving spaces of the truss modules in the plain view in the direction of the first longitudinal direction.

[0036] The tube elements in the continuous receiving spaces are coupled / connected / locked / linked by the first and second connection devices. In other words, the first and second connection device are coupled to each other by the tube elements, wherein the tube elements carry! support the truss modules. The truss modules, the tube elements and the first and second connection devices form a linked unit in the form of the truss pillar.

[0037] In the fourth step, the banner, which is preferably a silicone edge graphics, is inserted in (one of) the continuous grooves of the truss pillar in the longitudinal direction. Specifically, the banner is inserted into one of the continuous grooves, starting from one of the ends, that is starting from the first connection device or starting from the second connection device, and then pulled into the longitudinal direction of the groove so that one edge of the banner, preferably a silicone edge of the banner, is received and fixed in the continuous groove. The fixation can be a force-fit and / or form-fit fixation.

[0038] With this method, a truss pillar can be easily, safely and cost-effectively assembled. The monolithic design of the truss modules makes it easy to assemble the truss pillar for a single person, since the hollow frame elements of the individual truss modules are fixed in a defined way in respect to each other. Furthermore, the risk of incorrect assembly can be efficiently prevented.

[0039] In a first aspect, in the third step, the first connection device and the second connection device may be positioned such that end portions of the tube element protrude through the openings of the truss coupling portions.

[0040] In other words, the extension of the tube element in the longitudinal direction may be larger than the extension of the continuous receiving space in the longitudinal direction. In yet other words, the tube element can be a positioning aid for the first connection device and the second connection device, and the openings of the first and second connection devices can be threaded onto the tube element / the tube element can be inserted into the openings of the first and second connection devices during the assembly process.

[0041] This helps to prevent the first connection device and the second connection device from moving out of place during installation, which also makes the assembly process easier, while also speeding the assembly process up and making it safer.

[0042] In another aspect, the method may comprise a further step after the third step of: (re)forming end portions of the tube element so that the end portions of the tube element are connected to the openings of the truss coupling portion by means of force and / or form fit.

[0043] In other words, the end portions of the tube element may be worked / formed in such a way that a force-fit and / or form-fit connection is created between the tube element(s) and the first and second connection device.

[0044] The end portions are to be understood in particular as the end portions of the tube element in the longitudinal direction of the tube element. For example, the end portions can extend a few mm to a few cm from the ends of the tube element. In an assembled state, the end portions may extend into or beyond the openings of the truss coupling portion.

[0045] By forming the end portions, a secure and non-detachable connection can be created without the need for additional connecting elements. This further reduces costs and assembly work. The expression "non-detachable" means that the truss pillar can only be detached by destroying it.

[0046] In another aspect, the forming of the end portions may be a widening of the end portions of the tube element, wherein a diameter of the end portion is widened such that its diameter is, at least at its widest point, larger than a diameter of the opening of the truss coupling portion.

[0047] In other words, the forming may be a spreading / radius enlargement of the tube element. The widening may preferably be a linear widening over the longitudinal extent of the end portion. The linear widening can prevent stress peaks and thus cracking of the tube element.

[0048] Preferably, press cones can be inserted / pressed into the end portions of the tube elements and thereby the first connection device, the second connection device and the tube elements can be pressed together, whereby the end portions of the tube element are widened and reshaped.

[0049] The widening enables a uniform transmission of force between the first and second connection device and the tube element and can be carried out easily and repeatedly.

[0050] In another aspect, in the forming process a (pressing) force may be applied in the first longitudinal direction and the truss modules may be fixed in a preloaded state between the first connection device and the second connection device.

[0051] In other words, in the forming process, the force in the longitudinal direction may be applied in such a way that the truss modules elastically deform and may be fixed in the elastically deformed state between the first and second connection devices connected via the tube elements.

[0052] By means of such a preloaded / pretensioned fixing / mounting of the truss pillar, the truss pillar can absorb larger forces. Further, slipping of the truss modules and therefore wear can be prevented and a handling can be improved by avoiding edges and transitions on the truss pillar.

[0053] In another aspect, the method may comprise a further step before the insertion of the banner of: connecting the first connection device to a rigid connector device via a first fixing element of the first connection device, preferably by means of screwing the fixing element into the rigid connector device in the first longitudinal direction.

[0054] In other words, the method may comprise a step of connecting the truss pillar via the first fixing element mounted / attached to / provided in the first connection device to the rigid connector device in order to combine several of the truss pillars to one large truss pillar.

[0055] The connection device may be configured with a spring element that pretensions the fixing element in such a way that the fixing element is arranged in a preferred mounting position in / on the connection device. In other words, the fixing element can be pressed / tensioned in the first longitudinal direction by the spring element, making it much easier for an operator to screw in the fixing element.

[0056] The spring element is preferably arranged around a connecting portion of the fixing element and is preferably provided and configured to hold the fixing element in a predetermined (and pretensioned) position relative to a remainder of the connection device.

[0057] The spring element is preferably a compressible element which may be pre-stressed / pre-tensioned in dependence on the pitch of the spring element and thereby a spring rate.

[0058] In one aspect, the spring element can abut against a stop of the connection device and against a shaft shoulder or a locknut element of the fixing element.

[0059] The stop may be formed on a stiffening element of the connection device, a sleeve flanged or connected to the connection device or a polymeric housing of the connection device.

[0060] In the pre-stressed / pre-tensioned state, the spring element may be configured to hold the fixing element via the locknut element in its position.

[0061] The rigid connector device is a, preferably essentially planar, connector that is provided and configured to connect two of the truss pillars on front end sides / end sides, i.e. on sides of the connection device(s).

[0062] Further, the method may comprise another step thereafter, wherein a second truss pillar is connected to the rigid connector device via a third connection device of the second truss pillar, preferably by means of screwing a second fixing element into the rigid connector device in the longitudinal direction.

[0063] This additional assembly step allows a (large) number of truss pillars to be combined to form a (combined) truss pillar of any size, in order to adapt the truss pillar in its size to the desired application.

[0064] In another aspect, the rigid connector device may comprise at least one, preferably several, external groove section(s), which may align with the adjacent external grooves of the truss modules to form the continuous groove when mounted to the truss pillar.

[0065] In other words, the rigid connector may comprise the groove section(s), preferably in circumferential wall sections of the rigid connector device. The groove width and groove depth of the groove sections can preferably correspond to the groove width and groove depth of the external groove or the continuous groove formed by the (multiple) external grooves.

[0066] Such a design of the rigid connector device can further facilitate the assembly process of the truss pillar. In particular, it facilitates threading the banner into the continuous groove and prevents the banner from getting stuck during the threading process.

[0067] In another aspect, the method may comprise a step of connecting the first connection device to a connection cube, wherein the connection cube is provided to be connected to the truss pillar via a first fixing element of the first connection device, preferably by means of screwing the fixing element into the rigid connector device in the first longitudinal direction.

[0068] This step is preferably carried out before the banner is inserted into the continuous groove.

[0069] The connection cube can be connected to the truss pillar instead of the rigid connector device or in addition to the rigid connector device. The connection cube forms a corner piece / crossing piece for two, three, four, five or even six of the truss pillars, in particular to form a truss system from the truss pillars.

[0070] The present disclosure also relates to the truss module for the method described above. It should be expressly noted that this truss module can also be claimed independently within the scope of the present disclosure.

[0071] In particular, the present disclosure also relates to the truss module for the method described above. The truss module comprises at least three hollow frame elements extending in the first longitudinal direction and the stiffening rods integrally connecting the hollow frame elements, wherein the hollow frame elements, preferably each, have the external grooves extending in the first longitudinal direction and wherein the truss module is formed integrally monolithic.

[0072] In other words, the truss module comprises the at least three hollow frame elements. In a plain view, the hollow frame elements preferably have a rectangular, in particular a square, base or peripheral geometry in the direction corresponding to the first longitudinal direction. The hollow frame elements comprise the receiving space, which extends in the longitudinal direction, preferably as a circular cylindrical cavity in the hollow frame element.

[0073] Preferably, the receiving space has a constant cross-sectional area or a constant radius over the longitudinal extent of the receiving space.

[0074] Embodiments are also conceivable in which the receiving space has (local) constrictions. Furthermore, embodiments are conceivable in which the receiving space has an oval, triangular, rectangular or polygonal cross-sectional area.

[0075] The truss module comprises stiffening rods that connect the hollow frame elements (to each other). The stiffening rods are formed on the outer walls of the hollow frame elements. In other words, the stiffening rods extend from the outer surface of the hollow frame elements. The stiffening rods are integrally formed with the hollow frame elements. In other words, the hollow frame elements are connected to the stiffening rods without any joints. In yet other words, the hollow frame elements are formed monolithically and in one piece with the stiffening rods.

[0076] The at least one external groove is formed in at least one of the hollow frame elements of the truss module. Preferably, the at least one external groove can be formed in each of the hollow frame elements. More preferably, more than one external groove can be formed in each of the hollow frame elements.

[0077] The external groove extends over the entire length of the hollow frame element. Preferably, the external groove extends over the length of the hollow frame element with a constant groove depth and constant groove width.

[0078] There are also conceivable embodiments in which the groove depth and / or the groove width (locally) may change over the longitudinal extension of the groove in the first longitudinal direction. In this way, the groove depth and / or the groove width can be narrowed! constricted (locally), for example, to implement an additional fastening or a stop or a latch.

[0079] Alternatively or additionally, the groove depth and / or the groove width can be widened (locally), for example, to form a recess for easier removal of the banner from the external groove.

[0080] The entire truss module is a single piece. That is, the entire truss module is molded in one piece. In other words, the truss module is made with no joints. In still other words, the truss module is monolithic. In yet other words, the hollow frame elements, the stiffening rods and the external groove(s) are preferably formed monolithically and in one piece, thus forming an integral, one-piece and one-material truss module.

[0081] The truss module is thus preferably (formed from) a single piece of material.

[0082] On the one hand, such a configuration of the truss module eliminates the weak points that occur at joints. Furthermore, the truss module can be produced in large quantities at a low cost. In addition, all truss modules are reliably identical, which makes assembly considerably easier, since any adjustments and rework on the truss modules are not required. Furthermore, it is possible to prevent errors from occurring during the assembly of the truss modules, for example, that the stiffening rods are not sufficiently fixed to the hollow frame elements.

[0083] According to an especially preferred embodiment, the truss module may be formed by injection molding from plastic material.

[0084] In other words, the truss module may especially preferred be an injection-molded part that is produced from a plastic material in an injection mold using an injection molding process.

[0085] Consequently, the truss modules can be produced cost-effectively in large numbers.

[0086] The method according to the present disclosure may comprise a previous step of injection molding the truss module(s) as (a) single / integral piece(s) from plastic material.

[0087] In another aspect, the truss module may contain four of the hollow frame elements and the truss module may have a cubic geometry, preferably with an edge length of 150 mm.

[0088] In other words the truss module may have the four hollow frame elements, which, in a plain view in the direction of the first longitudinal direction, can be arranged in a square, specifically in the corners of a square. A side length of this square can be 150 mm. An extension of the truss module in the longitudinal direction can also be 150 mm.

[0089] The cube geometry or square geometry in the top view can further speed up and simplify the assembly process, as less attention needs to be paid to the orientation of the truss module during the assembly process. Furthermore, the truss modules can be stored and transported more easily in an unassembled state (in boxes and containers).

[0090] In another aspect, the truss pillar may have an extension in the first longitudinal direction of 600 mm. In other words, the truss pillar may comprise four truss modules stacked on another in the longitudinal direction.

[0091] The height of 600 mm is a size that is adaptable / compatible with standard industrial dimensions. Reusable transport containers often have a dimension of 600 mm and standard (Euro) pallets have a length of 1200 mm, which means that standard shipping sizes can be booked / used when transporting the truss pillar, which significantly reduces logistics costs.

[0092] In another aspect, each of the hollow frame elements may comprise two grooves, which extend at 90° to each other regarding an extension direction in the groove depth direction and have a common groove opening in a corner section of the hollow frame element.

[0093] In other words, the hollow frame element of the truss module may have a cut out in a corner section of the hollow frame element. That is, in the top view of the hollow frame element, one corner of the hollow frame element can be the cut out at an angle of 45° and form a (common / joint) opening for the two grooves in the hollow frame element. In the plain view, the grooves extend from the groove opening parallel to the side edges / walls of the hollow frame element.

[0094] By forming the grooves in said way, the truss module and thus the truss pillar can be used flexibly and the banner can be clamped into the truss pillar in different orientations.

[0095] The grooves are formed in one piece in the hollow frame element.

[0096] In another aspect, the stiffening rods may be made from solid material and extend monolithically at a 45° angle between adjacent hollow frame elements with reference to the first longitudinal direction, whereby each hollow frame element is coupled with two stiffening rods.

[0097] In other words, the stiffening rods may link the adjacent hollow frame elements in such a way that, in the plain view, the stiffening rods run along (imaginary) edges of the square (or of another geometry, such as a triangle) defined by the hollow frame elements. The stiffening rods may be made of solid material.

[0098] Embodiments in which the stiffening rods have an (inner) framework structure or recesses are also conceivable.

[0099] An enclosed angle between a surface of the hollow frame element and a center fibre of the stiffening rod, which runs in the direction of extension of the stiffening rod, is approx. 45°.

[0100] Each of the hollow frame elements may be monolithically coupled or formed with two stiffening rods. The stiffening rods preferably extend from surfaces that are not in proximity to the grooves.

[0101] In another aspect, the stiffening rods may be angled alternately in a circumferential direction.

[0102] In other words, the two stiffening rods formed monolithically on the hollow frame element may extend away from the hollow frame element in a substantially V-shape.

[0103] In another aspect, a wall thickness of the hollow frame element may be mainly constant. In other words, the wall thickness of the hollow frame element may be constant except for slight variations, for example, at wall transitions.

[0104] In another aspect, a number of the stiffening rods of the truss module correspond to a number of the hollow frame elements of the truss module.Brief description of the figures

[0105] The disclosure is explained in more detail below using preferred embodiments and referring to the accompanying figures. Fig. 1 shows a monolithic truss module according to the present disclosure in a first perspective view; Fig. 2 shows the monolithic truss module according to the present disclosure in a second perspective view; Fig. 3 shows the monolithic truss module according to the present disclosure in a side view; Fig. 4 shows the monolithic truss module according to the present disclosure in a top / plain view; Fig. 5 shows a truss pillar comprising the monolithic truss modules in a perspective view assembled according to a method of the present disclosure; Fig. 6 shows the truss pillar comprising the monolithic truss modules in a side view; Fig. 7 shows an enlarged detailed sectional view of a corner section of the truss pillar; Fig. 8 shows a side view of two truss pillars connected to each other and a connection cube; and Fig. 9 shows a connection device for connecting the two truss pillars to each other and / or the truss pillar to the connection cube.

[0106] The figures are schematic in nature and serve only to understand the disclosure. Identical elements are marked with the same reference signs. The features of the different embodiments can be interchanged among each other.Detailed description of preferred embodiments

[0107] Fig. 1 to Fig 4 show different views of the monolithic truss module 2 according to the present disclosure. Fig. 1 is a first perspective view of the truss module 2, Fig. 2 is a second perspective view of the truss module 2, Fig. 3 is a side view of the truss module 2 and Fig. 4 a top view of the truss module 2. In the following, the structure of the truss module 2 is explained in more detail with reference to Fig. 1 to Fig. 4.

[0108] The truss module 2 comprises four hollow frame elements 4, extending in a first longitudinal direction L. Each of the hollow frame elements 4 has a pole or pillar geometry. The four hollow frame elements 4 are arranged in a square to each other. In other words, the hollow frame elements 4 are arranged in the corners of a square base area arrangement of the monolithic truss module 2 and extend away from the square base area arrangement. Each of the hollow frame elements 4 comprises two external grooves 6 and a receiving space 8 extending in the first longitudinal direction L. The two external grooves 6 have a common / joint groove opening 10 in a corner section of the hollow frame element 4. The joint groove opening 10 is configured as a slot or recess running in the first longitudinal direction L along one corner of the hollow frame element 4. In the present embodiment, the joint groove opening 10 is configured as a kind of 45° phase that opens the two external grooves 6 to an environment surrounding the truss module 2.

[0109] The two external grooves 6 extend at a 90° angle to each other. In the embodiment shown here, the two grooves 6 extend parallel to outer side walls 12 of the hollow frame element 4. The two external grooves 6 are essentially uniform in shape. In other words, the two external grooves 6 are formed with an identical groove width and groove depth. The groove width and groove depth is essentially constant over the longitudinal extent of the external groove 6. The two external grooves 6 extend essentially over the entire extent of the outer side walls 12.

[0110] Further, each of the hollow frame elements 4 comprises the receiving space 8. The receiving space 8 extents in the longitudinal direction L throughout the hollow frame element 4. In other words, the receiving space 8 extends parallel to the two external grooves 6 in the hollow frame element 4. Each of the hollow frame elements 4 is seamlessly integrally formed. This is to say that each hollow frame element 4 integrally forms and includes the receiving space 8 and the two external grooves 6. The receiving space 8 extends with a circular cross-sectional area over the entire longitudinal extension in the longitudinal direction L of the hollow frame element 4. This is to say that a cross-sectional area and thus a diameter and a radius of the receiving space 8 is constant over the longitudinal extension in the first longitudinal direction L. The receiving space 8 of the hollow frame element 4 is provided and configured to receive a tube element (36 in Fig. 7).

[0111] Stiffening rods 14 are formed between the neighboring hollow frame elements 4 of the truss module 2. Specifically, the truss module 2 comprises four stiffening rods 14, which are formed between the hollow frame elements 4. Between two neighboring hollow frame elements 4, one stiffening rod 14 is formed in each instance, which connects the two neighboring hollow frame elements 4. The stiffening rods 14 are formed in one piece / monolithically with the hollow frame elements 4. In other words, there is no joint between the hollow frame elements 4 and the stiffening rods 14. The stiffening rods 14 extend essentially at a 45° angle away from the outer side walls 12 of the hollow frame element 4.

[0112] Each of the stiffening rods 14 is solid. The stiffening rods 14 are orientated alternately in a circumferential direction. In other words, two stiffening rods 14 formed on one of the hollow frame elements 4 form a V-shaped geometry. The stiffening rods 14 are formed in one piece on the side walls of the hollow frame element 4, which do not border the external grooves 6.

[0113] The truss module 2 is an integral injection-molded part made entirely of plastic.

[0114] Fig.5 and Fig. 6 are views of a truss pillar 16, which comprises four truss modules 2. The four truss modules 2 are lined up or stacked in the first longitudinal direction L. The truss modules 2 are stacked in such a way that the stiffening rods 14 form a zig-zag shape in the longitudinal direction L. A first connection device 18 is formed at a first end of the truss pillar 16 in the longitudinal direction L and a second connection device 20 is formed at a second end of the truss pillar 16 in the longitudinal direction L. The first connection device 18 and the second connection device 20 have a substantially cross-shaped geometry and are provided and configured to connect the truss pillar 16 to further elements. Specifically, each of the first connection device 18 and the second connection device 20 includes four arms 22 extending from a common portion 24.

[0115] A truss coupling portion 26 is formed at an end of each of the four arms 22 facing radially outward form the common portion 24. The truss coupling portion 26 has an opening 27. The opening 27 is a circular through-hole. The truss coupling portion 26 will be explained in more detail later on the basis of Fig. 7.

[0116] The common portion 24 of the first connection device 18 is traversed by a first fixing element 28. The common portion of the second fixing device 20 is traversed by a second fixing element 30. The first fixing element 28 and the second fixing element 30 are screw elements each having a handwheel 32 for operating the first fixing element 28 and the second fixing element 30.

[0117] Fig. 7 shows an enlarged sectional view F of Fig. 6. The truss coupling portion 26 rests on a recess 33 of the hollow frame element 4. A diameter of the opening 27 is slightly smaller than a diameter of the receiving space 8. A tube element 34 is disposed in receiving space 8. The tube element 34 is an aluminum tube, which extends in the first longitudinal direction L from the first connection device 18 to the second connection device 20 through the receiving spaces 8 of the hollow frame elements 4.

[0118] The tube element 34 comprises an end portion 36 that is shaped to form a form-fitting connection with the first connection device 18. Specifically, the end portion 36 is designed as a funnel-shaped section, which widens in the shape of a truncated cone over its extent. The end portion widens in such a way that it is in contact with a conical section 38 formed in the opening 27. The end portion 36 is formed on both sides of the tube element 34 and creates a form-fitting connection between the first connection device 18, the second connection device 20 and the tube elements 34. Since the tube elements 34 extend through the receiving spaces 8 of the hollow frame elements 4 of the (here four) truss modules 2, the four truss modules 4 are also connected to the first connection device 18 and the second connection device 20 in a form-fitting manner. The end portions 36 are preferably formed by pressing.

[0119] During the pressing, the truss modules 2 is also tensioned between the first connection device 18 and the second connection device 20.

[0120] Fig. 8 shows two of the truss pillars 16 connected to form a combined truss pillar. The two truss pillars are connected to each other via a rigid connector device 40. A third connection device 46 of the second truss pillar 16 is fixing the second truss pillar 16 to the rigid connector device 40 by means of a third fixing element 48.

[0121] The rigid connector device 40 is a coupling piece in which the fixing elements 28 of the truss pillars 16 are screwed in via the respective hand wheels 32. Furthermore, a connection cube 42 is attached to / with the combined truss pillar. The connection cube 42 is a corner element that allows up to six truss pillars 16 to be connected at an intersection.

[0122] Both the rigid connector device 40 and the connection cube 42 are also designed with grooves so that the external groove 6 of the hollow frame elements 4, and the grooves of the connection cube 42 and the rigid connector device 40 form a continuous groove 44 that can hold a banner, for example a silicone edge graphic. Specifically, the rigid connector device 40 is designed with an external groove section 50, which, when mounted, is aligned with the continuous groove 44.

[0123] A first preferred height L1 of the truss module 2 is 150 mm. A second preferred height L2 of the truss pillar 16 is therefore 600 mm. The dimensions of the truss module 2 are essentially cubic. In other words, the truss module 2 has the dimensions 150 mm x 150 mm x 150 mm.

[0124] Fig. 9 is a cross sectional side view through the connection device 18, 20, 46 being polymeric in-molded. The connection device 18, 20, 46 has a polymeric housing portion 52 and the fixing element 28, 30, 48. The polymeric housing portion 52 is configured with a plurality of pin portions 54 beneath the polymeric housed section of the connection device 18, 20, 46. Each of the pin portions 54 is arranged in a section beneath a pre-defined section of the in-molded connection device 18, 20, 46. The position of the pin portion 54 is set in dependence on and in accordance with corresponding sections of the rigid connector device 40. Each of the plurality of pin portions 54 is configured with a blind hole section 56.

[0125] Fig. 9 shows an intersection portion 58 filled with a polymeric support structure. The polymeric support structure forms a polymeric support structure portion 60. A through hole volume portion 62 is omitted within the polymeric support structure portion 60. The through hole volume portion 62 extends through the intersection portion 58. The through hole volume portion 62 comprises a discontinuous geometry. The discontinuous geometry is preferably pre-defined by the fixing element 28, 30, 48.

[0126] Fig. 9 shows the handwheel 32 of the fixing element 28, 30, 48 contacting a connecting portion 66. The fixing element 28, 30, 48 comprises a screw head section 68, which is embodied as a hexagon screw section 64, a shaft section 70 and a male threaded section 72. On the male threaded section 72 in the interface to the shaft section 70, a locknut element 74 is arranged. The section of the locknut element 74 being orientated towards the shaft section 70 is configured as a second contact section 76 of a spring element 78. A first contact section 80 of the spring element 78 is configured by the polymeric housing portion 52. The spring element 78 is pre-tensioned in between the first contact section 80 and the second contact section 76. The male threaded section 72 is supported in its position by means of the tensioned spring element 78 during screwing the connecting portion 66 into a counterpart. The counterpart is embodied as female threaded section in a rigid nut section of the rigid connector device 40.

[0127] A method for assembling the truss pillar 16 is described below with reference to the figures.

[0128] In a first step, four of the monolithic truss modules 2 are stacked on top of each other in the longitudinal direction L in such a way that the hollow frame elements 4 of the individual truss modules 2 stand on top of each other and the hollow frame elements 4 receiving spaces 8 of the individual hollow frame elements 4 standing on top of each other form a common continuous receiving space 8. The external grooves 6 of the stacked hollow frame elements 4 are then also arranged / positioned in relation to each other so that the continuous grooves are formed.

[0129] In a next step, the four tube elements 34 are inserted into the four continuous receiving spaces 8. That is, each of the tube elements 34 is inserted in the first longitudinal direction L into one of the continuous receiving spaces 8.

[0130] Of course, it is also possible to thread the four truss modules 2 one after the other with the receiving spaces 8 of the hollow frame elements 4 onto the tube elements 34.

[0131] Then, the first connection device 18 and the second connection device 20 are placed on the end portions 36 of the tube elements 34, so that the first connection device 18 and the second connection device 20 form the end caps of the truss module 2.

[0132] In the next step, the end sections 36 are reshaped. Specifically, the end sections 36 are widened to create a form-fitting connection between the tube elements 34 and the first connection device 18 and the second connection device 20, thus fixing the four truss modules form-fittingly between the first connection device 18 and the second connection device 20.

[0133] Several of the truss pillars 16 can then be connected to each other using rigid connector devices 40 and / or connection cubes 42.

[0134] In a final step, the banner can be pulled into the continuous groove 6.List of reference signs

[0135] 2truss module 4hollow frame element 6external groove 8receiving space 10joint groove opening 12outer side wall 14stiffening rod 16truss pillar 18first connection device 20second connection device 22arm 24common portion 26truss coupling portion 27opening 28first fixing element 30second fixing element 32handwheel 33recess 34tube element 36end portion 38conical section 40rigid connector device 42connection cube 44continuous groove 46third connection device 48third fixing element 50external groove section 52polymeric housing portion 54pin portion 56blind hole section 58intersection portion 60polymeric support structure portion 62through hole volume portion 64hexagon screw section 66connecting portion 68screw head section 70shaft section 72thread section 74locknut element 76second contact section 78spring element 80first contact section Lfirst longitudinal direction L1first height L2second height

Examples

Embodiment Construction

[0107]Fig. 1 to Fig 4 show different views of the monolithic truss module 2 according to the present disclosure. Fig. 1 is a first perspective view of the truss module 2, Fig. 2 is a second perspective view of the truss module 2, Fig. 3 is a side view of the truss module 2 and Fig. 4 a top view of the truss module 2. In the following, the structure of the truss module 2 is explained in more detail with reference to Fig. 1 to Fig. 4.

[0108]The truss module 2 comprises four hollow frame elements 4, extending in a first longitudinal direction L. Each of the hollow frame elements 4 has a pole or pillar geometry. The four hollow frame elements 4 are arranged in a square to each other. In other words, the hollow frame elements 4 are arranged in the corners of a square base area arrangement of the monolithic truss module 2 and extend away from the square base area arrangement. Each of the hollow frame elements 4 comprises two external grooves 6 and a receiving space 8 extending in the first...

Claims

1. A method for assembling a truss pillar (16) comprising a plurality of monolithic truss modules (2), each of the truss modules (2) comprises at least three hollow frame elements (4) extending in a first longitudinal direction (L) and stiffening rods (14) integrally connecting the hollow frame elements (4), wherein the hollow frame elements (4), preferably each, have at least one external groove (6) and a receiving space (8) extending in the first longitudinal direction (L); the method comprising the steps: - S1: Lining up the truss modules (2) in the first longitudinal direction (L) directly adjacent to one another, with the hollow frame elements (4) of the truss modules (2) aligned to form continuous receiving spaces (8) and the external grooves (6) of each truss module (2) aligned to form at least one continuous groove (6); - S2: Inserting of a tube element (34) into each of the receiving spaces (8) in the first longitudinal direction (L); - S3: Positioning of a first connection device (18) on a first end in the longitudinal direction (L) of the truss pillar (16) and a second connection device (20) on a second end in the longitudinal direction (L) of the truss pillar (16), which is located opposite of the first end in the longitudinal direction (L), whereby openings (27) of truss coupling portions (26) of the first connection device (18) and of the second connection device (20) are positioned in extension with the receiving spaces (8) in such a way that the tube elements (34) are locked in the receiving space (8); - S4: Inserting a banner, preferably a silicone edge graphics, in the continuous groove (6) in the first longitudinal direction (L).

2. The method according to claim 1, characterized in that in step S3, the first connection device (18) and the second connection device (20) are positioned such that end portions (36) of the tube element (34) protrude through the openings (27) of the truss coupling portions (26).

3. The method according to claim 2, characterized in comprising a further step after the step S3 of: - S4: (re)forming the end portions (36) of the tube elements (34) so that the end portions (36) of the tube elements (34) are connected to the openings (27) of the truss coupling portion (26) by means of force and / or form fit.

4. The method according to claim 3, characterized in that the forming of the end portions (36) is a widening of the end portions (36) of the tube elements (34), wherein a diameter of the end portions (36) is widened such that it is, at least at its widest point, larger than a diameter of the openings (27) of the truss coupling portions (26).

5. The method according to claim 3 or 4, characterized in that in the forming process a force is applied in the first longitudinal direction (L) and the truss modules (2) are fixed in a preloaded state between the first connection device (18) and the second connection device (20).

6. The method according to one of claims 1 to 5, characterized in comprising a further step before the insertion of the banner of: - S5: connecting the first connection device (18) to a rigid connector device (40) via a first fixing element (28) of the first connection device (18), preferably by means of screwing the first fixing element (28) into the rigid connector device (40) in the first longitudinal direction (L).

7. The method according to claim 6, characterized in comprising a further step after the step S5 of: - S6: connecting a second truss pillar (16) to the rigid connector device (40) via a third connection device (46) of the second truss pillar (16), preferably by means of screwing a third fixing element (48) into the rigid connector device in the longitudinal direction (L).

8. The method according to claim 6 or claim 7, characterized in that the rigid connector device (40) comprises external groove sections (50), which align with the adjacent external grooves (6) to form the continuous groove (44) when mounted to the truss pillar (16).

9. The method according to one of the claims 1 to 5, characterized in comprising a further step before the insertion of the banner of: - S7: connecting the first connection device (18) to a connection cube (42), wherein the connection cube (42) is provided to connect to the truss pillar (16) via the first fixing element (28) of the first connection device (18), preferably by means of screwing the first fixing element (28) into the connection cube (42) in the first longitudinal direction (L).

10. Truss module (2) for the method according to one of claims 1 to 9, the truss module (2) comprises at least three hollow frame elements (4) extending in the first longitudinal direction (L) and the stiffening rods (14) integrally connecting the hollow frame elements (4), wherein the hollow frame elements (4), preferably each, have the external grooves (6) extending in the first longitudinal direction (L), wherein the truss module (2) is formed integrally monolithic.

11. Truss module (2) according to claim 10, characterized in that the truss module (2) is formed by means of injection molding from plastic material.

12. Truss module (2) according to claim 10 or 11, characterized in that the truss module (2) contains four of the hollow frame elements (4) and the truss module (2) has a cubic geometry, preferably with an edge length or first height (L1) of 150 mm.

13. Truss module (2) according to one of the claims 10 to 12, characterized in that each of the hollow frame elements (4) comprises two of the external grooves (6), which extend at 90° to each other with an extension direction in the groove depth and have a joint groove opening (10) in a corner section of the hollow frame element (4).

14. Truss module (2) according to one of the claims 10 to 13, characterized in that the stiffening rods (14) are made from solid material and extend monolithically at a 45° angle between adjacent hollow frame elements (4), whereby each hollow frame element (4) is coupled with two stiffening rods (14).

15. Truss module (2) according to claim 14, characterized in that the stiffening rods (14) are angled alternately in a circumferential direction.

Images