DE20007445U1 - Room module system as well as support column and extruded profile - Google Patents

Description

Applicant/Owner: BFTI Fassaden-Technik Berlin Innovations-GmbH

Official reference number: New registration

BFTI Facade Technology Berlin Innovations GmbH
Mergentheimer Strasse 8, 12247 Berlin

European Patent Attorneys Dipl.-Wirtsch.-Ing. Rainer Fritsche Lbm.-Chem. Gabriele Leißler-Gerstl Patent Attorney Dipl.-Chem. Dr. Peter Schuler

Alicante European Trademark Attorney Dipl.-Ing. Jürgen Klinghardt

Room module system as well as support column and extruded profile for this system

The invention relates to a room module system with support columns and supports held by the support columns, which can be used for interior fittings and/or for the interior design or redesign of rooms in an existing building.

The current rapid technological development in many technical areas makes it urgently necessary for the spatial organization in a building to be sufficiently variable in order to be able to adapt the spatial design to frequently changing work processes quickly and at reasonable costs. A flexible interior design system in which both the floor and the walls and ceilings are integrated is particularly suitable for responding effectively and quickly to changing space or room requirements.

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Such an interior fitting system simultaneously requires an assembly principle with a simple and at the same time secure connection technology in order to be able to implement necessary conversion and/or extension projects in a building in a short time using only a relatively small number of standard elements.

Conversion and/or expansion of the rooms in a building is always necessary when existing walls have to be moved to enlarge work spaces for larger, short-term project teams, or when additional walls have become necessary to create quiet work areas or intimate meeting zones.

The German patent application DE 25 09 078 discloses a movable structure made of prefabricated, detachably connected elements, in which a supporting structure for floor slabs and wall or ceiling elements can be made from columns and beams. Steel pipes with a cross-sectional profile in the shape of a regular hexagon are provided as supports. The beams are attached to the column by means of node elements designed as hexagonal rings with welded web plates, which can be arranged at the ends of the pipe. The hexagonal steel pipe has round and elongated holes at its ends in order to be able to produce the necessary screw connections.

Furthermore, the German patent application DE 23 05 612 A1 discloses a column-shaped structural element in the form of a hollow light metal profile as a support and/or node point for horizontal beams that can be connected to it to form a frame construction for interior construction. The column-shaped structural element has longitudinal grooves on its outer wall, which are evenly distributed around the circumference - depending on the number of horizontal beams to be attached. The grooves have an extended base to accommodate a separate connecting arm, which has wings that can be screwed onto the column circumference on both sides of a thickened extension that fills the groove space.

The horizontal beam is attached to the connecting arm.

The known solutions have the disadvantage that a large number of separate connecting elements and relatively complicated semi-finished products are required for a stable supporting structure, so that the assembly of the supporting structure involves a considerable amount of work and is therefore cost-intensive.

The grooves provided on the periphery of the column and the connecting arms to be inserted into these grooves also have a complicated geometry, which requires a particularly high level of manufacturing effort. In terms of assembly, it is also disadvantageous that the connecting arms can only be inserted into the grooves from the ends of the column. Since the selected position of the connecting arm can only be changed with considerable assembly effort, subsequent modifications to the supporting structure for the purpose of adapting it to a changing spatial organization are essentially no longer possible.

Furthermore, it is a disadvantage of the known supporting structures that no possibility is provided to create additional load-bearing nodes within the supporting structure without the use of columns or supports, if this is required for a changed interior design of the room.

Based on the deficiencies of the prior art, the invention is based on the object of specifying a room module system of the type mentioned at the beginning, which has a stable supporting structure for attaching floor, wall and ceiling elements for the interior design of a room, which can be produced with a small number of different, prefabricated components with a relatively simple structure and with a minimum of additional connecting elements, which can be assembled in a short assembly time and can be easily adapted to a changing room organization.

This object is achieved by the features specified in the characterising part of claim 1.

The invention includes the realization that a room module system can be used more efficiently in the interior design of rooms in a building the better it is adapted to the existing building structure and the easier it is to accommodate a sudden change in the organization of the room. At the same time, it is essential that only a small number of prefabricated system elements and a minimum of connecting elements are required to produce a supporting structure suitable for floor, wall and ceiling paneling and easy to assemble.

According to the invention, the room module system for the interior construction of a room in a building has support columns and side supports that are to be positioned vertically and are designed as a hollow profile with a regular polygonal, preferably hexagonal, cross-section, as well as supports that can be fastened to the support columns and/or side supports and extend essentially horizontally.

In addition, node elements are provided with which a structural node corresponding to the shape of a supporting column section with a small longitudinal extension can be formed by embracing a beam in pairs. These nodes hang from the beams and enable beams to be connected to one another in a convenient manner without the need to set up additional supporting columns.

The side surfaces of the, preferably hexagonal, support columns, side supports and structural nodes have grooves which, according to the invention, are designed as a screw channel and thus enable a particularly simple assembly technique when producing a connection between the vertically extending support columns, side supports or structural nodes and the

horizontally extending supports. The groove-shaped screw channels are preferably arranged in the middle of the side surfaces of the support columns, side supports and the elements for forming the structural nodes and extend essentially in the longitudinal direction parallel to the profile edges of the respective cross-sectional profile.

According to the preferred embodiment of the invention, the side supports are designed as a support column that is halved in the longitudinal direction. They can be attached directly to the enclosing structure of the room to be redesigned and, via supports, establish the mechanical connection between the support structure of the room module system and the enclosing structure of the room. The supports each have at least one connecting means, preferably designed as an angle element, at their ends for the purpose of connecting to the support columns, to the structural nodes or to one of the side supports, which is attached to the side surfaces of the support columns, structural nodes and side supports using an easy-to-implement screw connection using one of the existing screw channels.

Advantageously, almost all connection points are designed in the same way, whereby a relatively small number of different assembly elements are required for the room module system according to the invention for the production of supporting structures, which leads in particular to favorable storage and assembly conditions.

A further advantage is provided by the groove-shaped screw channels extending over the entire length of the support columns, the structural nodes and the side supports, through which the respective fastening point of a beam to be mounted can be conveniently adjusted in height during the assembly of a supporting structure and allows a connection with a convenient horizontal alignment of the beams.

Due to these fundamental properties of the inventive room module

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The system makes it particularly easy to make the necessary adjustments to the planked supporting structure in the event of a planned change in the spatial organisation, without, for example, having to drill a large number of new holes.

According to a preferred embodiment of the invention, supports in three different lengths are provided for the room module system, whereby - based on a selectable basic length - supports of single, double and triple basic length are used. The structural nodes are provided for the supports with double and/or triple basic length. Depending on the shape of the supporting structure, one node point can be provided for a support with double basic length and two node points for a support with triple basic length.

The structural nodes are positioned in such a way that the beam length is halved or divided into three equal parts. This type of dimensioning means that the floor and ceiling areas of the room module system can be planned with elements whose surface forms an equilateral triangle or is composed of a number of equilateral triangles.

To form the structural nodes of the room module system, node elements designed as prismatic components are provided, which essentially correspond to the shape of one half of a supporting column, but are considerably shorter. The structural node can be formed from two identical node elements, which are connected to one another - preferably by screwing - after encircling a support. For this purpose, the node elements each have a recess on their free long sides, which essentially corresponds in shape and size to half of the cross-sectional profile of the support.

The beams preferably have a substantially double-T-shaped cross-sectional profile, so that the supporting structure can be used without the risk of deformation relatively

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large loads can be supported. Beams for lower loads are essentially U-shaped.

According to a favorable development of the invention, it is provided that the screw channels arranged in the side surfaces extend essentially over the entire length of the support column, the side support and the structural node. This makes it possible to advantageously use elements for the room module system, preferably made of aluminum or an aluminum alloy, which - particularly with regard to the screw channels - can be produced inexpensively by extrusion.

According to an advantageous variant of the invention, a decorative strip is provided for the supports of the room module system. This decorative strip serves as a covering element for a lighting device that can be arranged on the corresponding support and can be colored as required. It is attached to the underside of the support and is preferably clipped onto the underside. This form of attachment is particularly practical and allows the decorative strips to be easily replaced if the color of the room is to be changed.

According to the preferred embodiment of the support column according to the invention, the screw channels are arranged centrally between the profile edges that delimit the side surfaces of the outer wall of the column. The screw channels of the support column have threads that are formed by low-height webs that extend along the groove walls in the direction of the column's longitudinal axis. The webs protrude into the free space between the groove walls at a distance from one another, with the webs of one groove wall of a groove being offset from one another transversely to the longitudinal axis in order to engage with the thread of the screws used on both sides. Such screw channels ensure a sufficiently strong connection of the elements of the room module system that are to be attached to the support columns and can be used in the manufacture of the preferably aluminum-made components.

Support columns can be produced by extrusion without any technological problems.

According to a further advantageous variant of the invention, a transverse offset is provided in the grooves between the webs of one groove wall and the other groove wall, which corresponds approximately to half the web width.

To easily adapt the supporting structure to rooms that do not have a constant ceiling height, a base is provided for the support columns of the room module system according to the invention. This base can be varied in its vertical extension according to the preferred embodiment of the invention. For this purpose, it is preferably designed in two parts and has a threaded pin on which a support body is guided. The length of the base can be varied in a simple manner by turning the support body on the threaded pin. To secure a selected position of the support body, locking means, for example a lock nut, are provided, which block the support body from turning in the direction of a reduction in the length of the base.

The adjustment option of the base, in conjunction with the screwing of the supports in the screw channel extending over the entire length of the support column, enables convenient leveling of the supporting structure or individual supporting structure elements within the relevant room.

To connect the support column and the base, an essentially circular-cylindrical sleeve is provided on the support body, onto which the support column is placed. After the sleeve has been pushed into the hollow profile of the support column, the casing of the sleeve rests on the bottom of the groove-shaped screw channels that protrude into the interior of the column and are convexly rounded on the outside to create a positive connection between the sleeve of the base and the support column.

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Below the sleeve, the support body has a support plate that supports the floor planking intended for the room to be redesigned. The arrangement of the support plate ensures that there is a sufficiently large distance to the floor of the room after the floor planking of the supporting structure has been installed. This free space can be used advantageously for laying electrical and/or media-carrying cables.

Advantageous further developments of the invention are characterized in the subclaims or are presented in more detail below together with the description of the preferred embodiment of the invention with reference to the figures.

Show it:

- Figure 1

a preferred embodiment of the invention in perspective view,

- Figure 2

a detail of the embodiment of the invention shown in Figure 1 in side view,

- Figure 3

an advantageous variant of the embodiment shown in Figure 2 in a view from above,

- Figure 4

the representation of the detail E1 of the embodiment of the invention shown in Figure 1 in sectional view,

- Figure 5

the representation of the view of a section along the line C...C in Figure 4,

- Figure 6

the representation of the detail E2 of the embodiment of the invention shown in Figure 1 in a view from above,

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- Figure 7 shows the representation shown in Figure 6 in side view,

- Figure 8 shows the view of a section along the line B...B

in Figure 3,

- Figure 9 is a favorable development of the detail shown in Figure 8

the preferred embodiment of the invention,

- Figure 10 The representation of the view of a section along the line A...A

according to Figure 1

- Figure 11 shows the detail E3 of the device shown in Figure 1.

Embodiment of the invention in top view, as well as

- Figure 12 shows another advantageous embodiment of the invention in

View from above.

The supporting structure 1 shown in Figure 1 has supporting columns 2 and side supports 3 which are anchored to the floor 4 or to the room enclosing structure 5 of a room 6 whose interior design is to be changed.

The support columns 2 and the side supports 3, which are designed as hollow profiles with a regular hexagonal cross-section and which essentially correspond to half of a support column 2 in terms of their shape and dimensions, are connected to one another by differently designed supports 7 and 8. The length and design of the supports 7 and 8 depends on the expected mechanical load and the room design. To attach the supports 7, 8 to the support columns 2 or side supports 3, screw grooves 9 are provided on their side surfaces, which accommodate screw bolts with which the supports 7, 8 are screwed using angles (compare positions 15 and 17 in Figure 2).

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The screw grooves 9 extend over the entire length of the support column or side support and thus enable easy height leveling of the supports 7, 8 when erecting the supporting structure 1.

Node points 10 are arranged on the supports 7, which, with a relatively small longitudinal extension, have the same hexagonal cross-sectional shape and the same type of screw grooves 11 as the support columns 2. As a result, the same type of fastening of the supports can be implemented for the support columns 2, side supports 3 and the node points 10, so that the assembly of the entire supporting structure 1 can be carried out very easily and, in a favorable manner, only a small number of different assembly elements are required.

In the section of the supporting structure 1 according to Figure 1 shown in partial sectional view in Figure 2, two supporting columns 2 are shown which are connected to one another by a support 7. The supporting columns 2 each have a base 12 by means of which they are anchored in the floor 4 of the room 6 to be redesigned.

Two structural nodes 10 are provided on the horizontally extending beam 7, which consist of two identically designed node elements 13 which are screwed together while enclosing the profile of the beam 7 (compare positions 24 and 37 in Figures 3 and 6, respectively).

The node elements 13 (see also the illustration according to Figures 6 and 7) are designed as prismatic components which essentially correspond to the shape of one half of a support column, but have a considerably shorter length than this and are each provided with a recess on the longitudinal sides which lie against one another after screwing, which essentially corresponds in shape and size to half of the cross-sectional profile of the supports 7.

Like the supporting columns 2, the structural nodes have similarly designed,

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groove-shaped screw channels 11, so that additional supports can be attached to the structural nodes 10 in the same way as to the supporting columns 2 and the number of different components and connecting elements of the room module system for producing a plankable structural system can thus be kept relatively small. In the direction of the room 6, the structural nodes 10 are covered by a cover 14, the color of which is adapted to the room design.

The support 7 is attached to the support columns 2 by means of a fastening bracket 15 that can be inserted into the support profile, which is fixed to the respective support column 2 by means of bolts 16 that can be screwed into the screw channels 9. A further fastening bracket 17 is inserted into the underside of the support 7. The pin 18 attached to the free angle leg rests only on the bottom of the screw channel 9. This connection point is essentially subjected to pressure and serves as an anti-twisting device in a simple way to ensure the positional stability of the support 7.

The base 12, which locks the support columns 2 and is variable in height, has a support plate 19, on the side of which facing the floor 4 of the room 6 a circular cylindrical sleeve 20 is arranged. The sleeve 20 is inserted into the hollow profile of the support column 2 and rests with its casing on the underside of the screw channels 9 distributed symmetrically around the circumference. The support plate 19 in turn holds the floor planking 21, which is simultaneously pressed against the support plate by the weight of the support column 2, at a predetermined height. This creates a free space 22 between the floor planking 21 and the floor 4 of the room 6, which can be used advantageously for laying electrical and/or other supply lines (not shown). The floor covering 23 covers the support point of the support columns 2 on the floor planking 21.

In Figure 3, in a variant of the supporting structure 1' shown in Figure 1, both these

Form of fastening of a plurality of further beams T to a support node 10 arranged between two support columns 2 is shown, as well as the structure of the support node 10 from two node elements 13 connected by means of screw connections 24. The fastening of the beams 7 and 7' to the support columns 2 and to the support node 10 takes place - as already explained in the explanations for Figure 2 - by screwing angles into the groove-shaped screw channels 9 and 11 provided here.

The detail E1 according to Figure 1, shown in the form of sectional views in Figures 4 and 5, shows the mechanical structure of the base 12, by means of which the support columns rest on the floor of the room to be redesigned.

The base 12 has a base plate 25 with a threaded pin 26 and a support body 28 which can be rotated on this threaded pin and has a threaded hole, by means of which the height of the support column can be leveled. The fixing of a selected setting of the support body is carried out in a simple manner using a lock nut 27. The support body 28 has a support plate 19 at its base end and a circular cylindrical sleeve 20 closed at the base by a cover 29 at its support column end. The cover 29 stabilizes the cylindrical shape of the sleeve 20 during assembly of the support column and thereby ensures a good form fit between the casing of the sleeve 20 and the base 30 of the groove-shaped screw channels 9 provided in the wall of the support column 2. This is additionally supported by a convex rounding of the channel base 30.

The part of the cover 29 projecting over the sleeve 20 forms a stop 31 when the sleeve 20 is inserted into the hollow profile of the support column 2.

The threads in the groove-shaped screw channels 9 are formed by webs 32 located on the groove walls. The webs 32 point into the groove space with a small height and extend parallel to the longitudinal axis of the

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Support column 2, wherein the webs opposite one another in the screw channel 9 are arranged offset from one another in the direction of the column axis in order to ensure the required thread pitch. The screw channels 9 are arranged centrally between the profile edges 34 delimiting the side surfaces 33 of the outer wall of the column.

The floor planking 21 resting on the support plate 19 carries a floor covering 23.

The node element 13 shown in Figures 6 and 7 in top view and side view serves to form structural nodes (compare position 10 in Figure 1), whereby two node elements 13 are screwed together to encompass a beam.

The node element 13 has a cross-sectional profile which corresponds to half the cross-sectional profile of the support column, while being very short in length compared to a support column (compare position 2 in Figures 1, 2 and 3). In order to be able to carry out the screw connection described above, the node element 13 has recesses 35 and 36 on its longitudinal edges which delimit the profile opening, which together form half of the cross-sectional profile of the beam on which a structural node is to be arranged (compare positions 7 and 10 in Figures 1, 2 and 3).

The flange provided for screwing the node elements 13 to form a structural node is designated 37.

Figures 8, 9 and 10 show cross-sectional views of supports 7 and 8 intended for the room module system.

The carrier 7 has a substantially double-T-shaped cross-sectional profile, wherein

at the end regions 38 and 39 of the profile, guide grooves 40, 41 are provided, each extending in the longitudinal direction of the support 7, in order to be able to insert the fastening angles (compare positions 15 and 17 in Figure 2) with one of their angle legs at the ends of the support. The angle 15 has two holes 42 required for screwing to a support column, a structural node or a side support. The angle 17 carries a pin 18 that can be inserted into the corresponding screw channel of the support column, the structural node or the side support.

On the underside of the support 7, a decorative strip 43 is provided, which is clipped onto the lower profile end region 39 facing the room and only has to fulfil a design function or a cladding of built-in components in the support 7, for example a light source.

The profile 44 shown in Figure 10 of a beam 8 that can be used for relatively low loads is essentially U-shaped. Guide grooves 46 are formed on the inside of the profile legs, which accommodate a fastening angle at the ends of the beam 8 for screwing to a support column, a structural node or a side support. A decorative strip 46 is provided on the underside of the beam 8 for design reasons.

The side support 3 shown in cross section in Figure 11 is designed as a hollow profile which essentially has the shape of half a support column.

Groove-shaped screw channels 48 are incorporated into the side surfaces 47 facing the room 6 to be designed, which correspond in shape and size to the screw channels in the support columns or the structural nodes of the room module system. They are used on the one hand for screwing fastening brackets 15 for connecting beams to the support column 3 and on the other hand for connecting the support column 3 to the room enclosing structure 5 using retaining brackets 49.

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Figure 12 shows a supporting structure 1" formed from elements of the room module system in a top view.

The beams 7 and 7' arranged between the support columns 2 and the structural nodes 10 have a length ratio of one to two. Only for the beam 50 is a special length provided, which results from special design or spatial requirements, which can, however, be implemented without difficulty with the room module system according to the invention.

Due to the hexagonal profile of the support columns and the structural nodes and the symmetrical arrangement of the screw channels, the floor or ceiling areas delimited by the support columns 2, the beams 7, 7' and/or the structural nodes 10 are designed as an isosceles triangle.

The support columns 2, the support column sections acting as structural nodes or nodes 10 or the node elements which can be assembled on the beams to form the node 10 and also the side supports, if necessary also the beams, can preferably be manufactured as extruded profiles made of aluminum.

The invention is not limited in its implementation to the preferred embodiments given above. Rather, a number of variants are possible which make use of the solution presented even in fundamentally different embodiments.

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Claims (31)

1. Room module system for the interior fitting out of a room ( 6 ) in a building, with support columns ( 2 ) which are designed as a hollow profile with a polygonal cross-section and have longitudinal grooves on the side surfaces, and with supports ( 7 , 7 ') which can be fastened to the support columns ( 2 ), characterized in that the grooves provided in the side surfaces ( 33 ) of the support columns ( 2 ) for the height-variable fastening of the supports to the support column are designed as screw channels ( 9 ) and the supports ( 7 , 7 ') each carry a fastening means ( 15 ) at their ends which can be connected to the support columns using the screw channels. 2. Room module system according to claim 1, characterized in that supporting structure nodes ( 10 ) are attached to the supports ( 7 , 7 '), which have the shape of a supporting column section and are aligned parallel to the supporting columns. 3. Room module system according to claim 1, characterized in that side supports ( 3 ) designed as hollow profiles are provided, the cross-sectional profile of which corresponds to a partial cross-section of the support column ( 2 ) and by means of which a connection of the supporting structure ( 1 ) with the room enclosing construction ( 5 ) can be established. 4. Room module system according to one of the preceding claims, characterized in that the support columns ( 2 ) have a cross-section in the form of a regular hexagon. 5. Room module system according to claim 2, characterized in that the structural nodes ( 10 ) are composed of several uniform node elements ( 13 ) which enclose the support ( 7 ) from both sides. 6. Room module system according to claim 5, characterized in that two node elements ( 13 ) can be connected to one another by screwing and can be fastened to the support ( 7 , 7 '). 7. Room module system according to one of the preceding claims, characterized in that first supports are provided with a basic length, second supports with a double length and third supports with a triple length of the first support. 8. Room module system according to one of claims 1, 2 or 3, characterized in that the screw channels ( 9 , 11 , 48 ) provided in the side surfaces ( 33 ) of the support column ( 2 ), the side support ( 3 ) and the supporting structure node ( 10 ) extend over the entire length of the relevant profile. 9. Room module system according to one of the preceding claims, characterized in that the support columns ( 2 ) and/or the side supports ( 3 ) each have a base ( 12 ) which is designed to be variable in length. 10. Room module system according to claim 9, characterized in that the base ( 12 ) has a threaded pin ( 26 ) and a support body ( 28 ) rotatably arranged on the latter, on which the elements of the floor paneling ( 21 ) are supported on the base, defining a free space ( 22 ) between their underside and the room floor ( 4 ). 11. Room module system according to one of claims 9 or 10, characterized in that a locking means ( 27 ) is provided in order to fix the support body ( 28 ) in a selected position. 12. Room module system according to one of the preceding claims, characterized in that the supports ( 7 , 7 ') have a substantially double-T-shaped cross-sectional profile. 13. Room module system according to claim 12, characterized in that a decorative strip ( 43 , 46 ) can be attached to the supports. 14. Room module system according to claim 13, characterized in that the decorative strip ( 43 , 46 ) can be clipped onto the underside of the supports. 15. Room module system according to one of the preceding claims, characterized in that the support columns ( 2 ), the side supports ( 3 ), the beams (7, V, 50) and the node elements ( 13 ) can be assembled with a minimum number of connection points that can be formed by means of identical fastening means ( 15 , 17 ) to form a stable supporting structure ( 1 , 1 ', 1 ") that can be structurally adapted to different room shapes in a simple manner and can be paneled on the walls, floor and ceiling, the floor and ceiling paneling forming a surface composed of a plurality of equilateral triangles. 16. Room module system according to one of the preceding claims, characterized in that the support columns ( 2 ), the side supports ( 3 ), the beams (7, V, 8) and optionally the node elements ( 13 ) are designed as extruded profiles, preferably made of aluminum. 17. Support column for a room module system according to one of claims 1 to 16, with a regular polygonal cross-sectional profile that is uniform in the longitudinal direction and with grooves ( 9 ) provided in its outer wall ( 33 ) and extending in the longitudinal direction of the column, characterized in that the grooves ( 9 ) are designed as screw channels. 18. Support column according to claim 17, characterized in that the screw channels ( 9 ) are arranged centrally between the edges ( 34 ) of the cross-sectional profile. 19. Support column according to one of claims 17 or 18, characterized in that the groove walls have parallel webs ( 32 ) of low height running in the longitudinal direction of the column. 20. Support column according to claim 19, characterized in that the webs ( 32 ) of one groove wall of a groove are offset from the webs of the other groove wall of the same groove transversely to the longitudinal axis. 21. Support column according to claim 20, characterized in that the transverse offset between the webs ( 32 ) of one groove wall and the other groove wall corresponds approximately to half the web width. 22. Support column according to one of claims 17 to 21, characterized by a base ( 12 ) which is height-adjustable in the longitudinal direction. 23. Support column according to claim 22, characterized in that the base ( 12 ) is designed in two parts and has a threaded pin ( 26 ) on which a support body ( 28 ) is rotatably arranged. 24. Support column according to claim 23, characterized in that the support body ( 28 ) has a support plate at its end facing the room floor and a sleeve ( 20 ) at the other end, which is designed to be insertable into the hollow profile of the support column ( 2 ). 25. Support column according to claim 24, characterized in that the casing of the essentially circular-cylindrical sleeve ( 20 ) is supported in the interior of the column on the bottom ( 30 ) of the grooves ( 9 ) designed as a screw channel. 26. Support column according to claim 24 or 25, characterized in that the groove bottom ( 30 ) is convexly rounded to match the casing of the sleeve ( 20 ). 27. Support column according to one of claims 17 to 26, characterized by a regular hexagonal cross-sectional profile. 28. Node element for forming a structural node of a room module system according to one of claims 1 to 16, characterized by a design as a prismatic component ( 13 ) corresponding to a supporting column half with a short length, which for the purpose of screwing in pairs to a similar second component while simultaneously encompassing a support ( 7 , 7 ') to form a structural node ( 10 ) has a recess ( 35 , 36 ) on its free longitudinal sides, which essentially corresponds in shape and size to half of the cross-sectional profile of the support ( 7 , 7 '). 29. Extruded profile with a polygonal, preferably regular hexagonal cross-section and with grooves running longitudinally centrally between the profile edges and open to the outside, characterized in that webs ( 32 ) of low height running longitudinally are formed on opposite walls of the grooves ( 9 ). 30. Extruded profile according to claim 29, characterized in that the webs ( 32 ) of one groove wall of a groove ( 9 ) are offset from the webs of the other groove wall of the same groove transversely to the longitudinal axis. 31. Extruded profile according to claim 30, characterized in that the transverse offset between the webs ( 32 ) of one groove wall and the other groove wall corresponds approximately to half the web width.