WO2011141452A1

WO2011141452A1 - Sitting or stacking element

Info

Publication number: WO2011141452A1
Application number: PCT/EP2011/057487
Authority: WO
Inventors: Wolfgang Heinecker
Original assignee: Wolfgang Heinecker
Priority date: 2010-05-10
Filing date: 2011-05-10
Publication date: 2011-11-17

Abstract

The invention relates to a sitting element (1), comprising at least one inner reinforcement (2) and an outer shell (3), wherein the outer shell (3) consists of at least two tubular hollow columns that are pushed inside each other crosswise as the shell elements (31, 32, 33). The invention further relates to a stacking element (10), comprising at least one inner reinforcement (2) and an outer shell (3), wherein the outer shell (3) consists of a tubular hollow column as the shell element (31), wherein the inner reinforcement (2) is designed as one piece and at least at the ends (21) consists of two column elements (22), which are spaced from each other by an intermediate piece (23). A further aspect of the invention is a combination of a plurality of sitting elements (1) and/or stacking elements (10).

Description

Seat or stacking element

The invention relates to a seat element according to the preamble of claim 1, a stacking element according to the preamble of claim 4 and combinations of Sit z / stack elements according to the respective preamble of claims 13 and 15th

Furniture such as tables or stools are usually not ^easily dismantled when needed and can be reduced to a small transport volume. Also, the construction of collapsible furniture is often laborious and tedious.

From DE 203 07 339 Ul as a supporting column out ^{¬ formed} base frame for a table is known. The column has a base with a polygonal, oval or round cross-section. Additional, horizontally arranged on the upper face of the column longitudinal or transverse members a table top is stabilized against tilting. The side walls of a column ^{¬ are} mated with the longitudinal or transverse members via slots interlocking. Zusätz ^¬ Lich are arranged to increase the stability in a column folding inserts. So the finished structure is sufficiently stable that even corrugated board can be used. Nevertheless, to secure the interlocking items still adhesive or staple connections are being considered.

Furthermore, from DE 20 2006 003 128 Ul a usable as a seat ^¬ some folding furniture known which is composed of a Dekorati ^¬ ven outer part and a supporting inner part. The outer part comprises a plurality of side walls connected to each other are connected via the side edge by means of hinge elements. The dimension of the inner part is dimensioned so that it is completely ^¬ constantly surrounded by the side walls of the outer part. Je ^¬ the inner part consists of surface elements whose edges bear against the Inneneckbereichen or inner sides of the outer part to stabilize the folding furniture. A surface element be ^¬ is composed of a plurality of sub-elements which are interconnected. These sheets are for example such INEI ^¬ Nander inserted, that in this way an interior part is formed in a double-pel-X-like shape. Other forms which increase stability are also proposed. Nevertheless, in this solution for easily dismantled folding furniture several hinge elements both on the outer part as well as on the inner part and also a constructed of several parts inner part needed.

It is an object of the invention to develop a seat or stacking element that stands out through tool-free design without fixed connections of previously known solutions and also allows versatile design variants and applications.

According to the invention, this object is achieved with respect to a Sitzele ^¬ ment with the in claim 1 and with respect to a Stapelele ^¬ ment with the features mentioned in claim 4. Further aspects of the invention with respect to combinations of seat / stack elements are given in claims 13 and 15. The other dependent claims relate to advantageous embodiments and further developments of the invention.

The invention includes a seat element with at least one inner stiffener and an outer shell, where wherein the outer shell consists of at least two cross-ineinan ^¬ pushed tubular hollow columns as enveloping elements.

The invention is based on the consideration that a seat element set usually consists of up to three or more telescoped shell elements as a coat and is sufficiently stable with appropriate orientation to withstand the applied pressure. The inner reinforcement is pushed into the first wrapping element. Thereafter, the second envelope element with its opening is pushed diametrically, ie crosswise, over the first wrapping element. In other words, the respective outer lateral surfaces are arranged so that their openings are perpendicular to each other. A third envelope element may be deferred in case of need be diametrically ^¬ züglich the previous two coats. For particularly sturdy constructions, further envelope elements adapted in size may follow.

In a preferred embodiment of the invention, the inner stiffener may be in one piece and consist at least at the ends of two column elements, which are spaced apart via an intermediate piece. The internal stiffening with at least two stable column elements at the ends substantially increases the stabilization of the outer shell.

In an advantageous embodiment, the length and height of the Hüllelemente vary depending on the wall thickness of the construction ^¬ material so that they fit together exactly. For this purpose, the side length of the envelope element constructed approximately with square side surfaces is greater than the height by twice the thickness of the building material used. To this Way up to three identical Hüllelemente in beliebi ^¬ ger sequence by 90 degrees against each other rotated ineinan ^{¬ be} plugged without it would lead to adverse stresses.

The solution according to the invention is thus a kit which can be constructed without tool-free construction without fixed connections to a seat element.

Alternatively, the invention includes a stacking element with at ^¬ least one internal reinforcement and an outer shell, where the outer shell consists of a tubular hollow column as a sheath member, wherein the stiffener inside is in one piece and consists, at least at the ends of two column members which are spaced apart via an intermediate piece. Usually, the envelope element for storing objects remains unilaterally or opened on both sides. The insertion depth of objects is variably set by the posi tion of the internal web ^¬.

The kit is designed so that versatile applications ^¬ NEN, such as shelf walls, in which seat elements can be integrated, can be designed. In addition, it is also thought to dismantle the furniture in a few simple steps, to rebuild it elsewhere in other variants. Disassembled into individual parts has a seat or stacking element for egg ^¬ nen transport even the smallest possible space requirements.

A particular advantage of the solution according to the invention is that a module can be constructed as a kit without tools and by mutual tension of the outer shell with the inner stiffening over an enormous pressure load and has a self-supporting stability and thus forms a ge ^¬ suitable base for seat or stacking elements. You do not need any tools: simple connection, clamping and plugging leads to success. Thus, the seat or stacking elements can be removed as a basic unit at any time back ^¬ stateless again.

Advantageously, the column members of the inner lie ^¬ constricting stiffener may have a square, rectangular, triangular or rounded shape. The pillar members are formed from the ends of a tabular stock. ^{Alternatively,} a locking mechanism latches the material into a stable and pressure-resistant column. The axis of symmetry or longitudinal axis of such columns is aligned so that it shows in the assembled state parallel to the direction of the expected pressure load. During assembly, there is also no risk of slippage of the inner reinforcement due to the matched fit. But even if the Innenaussteifung would be slightly shifted, so does not directly jeopardize the stability of Ge ^{¬ complete} construction.

For ease of molding of the shaft members of the stiffener inside advantageously Seitenflä ^¬ surfaces of the column members can be folded along fold lines which extend parallel to the column longitudinal axis. The term crease lines is not only considered in the context of machining, but also includes all types of creases or kinks of the side surfaces. The shapes of the common folding types, such as parallel or cross fold, are preferably used here. In a preferred embodiment, grooves or grooves may be provided along the fold lines along which the inner stiffener is folded. Such fold lines read ^¬ sen to a precise manual folding. If the kinks are specified accordingly, can be ensured by a well-defined excess of the individual parts and a corresponding bracing in the assembled state.

In a preferred embodiment, the enveloping elements and the inner reinforcement made of cardboard or cardboard. Furthermore, plastics are also suitable as materials for the inner reinforcement and the outer shell. Also, different materials are well kombi ^¬ nierbar with each other. For decorative purposes also transparent or only partially transparent materials can be used. At ^¬ these elements offer the necessary flexibility to allow a variable structure when joining together and to master everyday stresses.

Advantageously, the intermediate piece of the inner stiffener may be flat, circular, meandering or zigzag-shaped. Through the aligned additional Steifig ^¬ ness geometry, the adapter ei ^¬ ner greater pressure load can withstand. The compressive strength results primarily from the high tensile strength of the outer shell, provided that it is arranged horizontally around ^¬ . The higher the ballast, the greater the tension on the outer shell.

In a preferred embodiment of the invention, two internal stiffeners can be arranged in mirror image to each other in the middle of the outer shell. Such a kit represents a simple and already stable basic form both for the seat element as well as for the Stapelele ^¬ ment.

In a further preferred embodiment, the spacers can complement each other geometrically in two mirror-inverted arranged inside stiffeners and thereby withstand in the longitudinal axis of a particular pressure load. In such arrangements, the individual sub-elements of several stiffeners complement each other to form stable units.

Advantageously, a plurality of internal stiffeners can be arranged. In principle, such, the interior space filling module types have a higher Steifig ^¬ speed in the axial direction because the weight distribution of which is likewise directed in the axial direction pressure is distributed over a seating surface much more favorable.

Furthermore, the invention includes a combination of a plurality of above-described seat elements and / or stacking elements, wherein at least the externally arranged tubular hollow column of a seat or stacking element is connected to the outside lie ^¬ ing tubular hollow column of a directly adjacent seat or stacking element.

In such a combination of Sit z / stacking elements is therefore a kit of several individual elements, which is designed so that versatile Appli ^¬ cations can be designed. For example, so shelf walls can be constructed, in which also also seat elements can be integrated. In groupings of several seat or stack elements, the individual modules can be connected to each other in the assembled state by means of holding or fixing elements and secured. In addition, adhesive, adhesive tape or straps are suitable for connection and securing.

The stack elements can be combined three-dimensionally in a vertical and horizontal arrangement. For this purpose, several elements such as building blocks are arranged on each other or next to each other and, where necessary where necessary, secured with appropriate means ^¬ . It is also possible to attach additional elements to increase the stability or aesthetically design with additional design elements. From a honeycomb-like assembled arrangement of Hüllelementen that are rhombically deformed at an angle of 60 ° or 120 °, more design elements can be created ^¬ the.

The columns or benches thus obtained can in turn be arranged side by side or one above the other to podiums, bed frames, rear walls, counters and the like.

In a preferred embodiment, the outer tubular hollow columns of the immediately adjacent arranged sitting or stacking elements abut one another on a common Berührungsflä ^¬ che, wherein the side surfaces of the common contact surface of the tubular hollow columns are wrapped with band-shaped material.

The respective wrapping elements can be connected in this way unterei ^¬ Nander. In the cavity of each Hüllelements then two back-Asked indoor stiffeners are inserted. In this way, shelves, product displays or presentation systems can be produced. These Innenaussteifungen can be glued to the respective Hüllelement. But the Innenaussteifungen can also be loosely inside asked, whereby the above ^¬ be enrolled resulting composite can be decomposed after use.

As a strip-shaped material, a kraft paper sheet can be used, with which the respectively adjacent side surfaces of adjacent enveloping elements are wrapped. Even longer and shorter paper sheets are conceivable for this purpose. Similarly, films, nonwovens, felts, textiles or other suitable materials may be used. Moving after wrapping for shelves, the inner stiffeners or closed furniture, the other enveloping elements including the innermost stiffeners in the connected to the kraft paper enveloping elements, creates a stable and be ^¬ expandable structure in which can be completely dispensed with adhesive. As a result, the furniture is completely dismantled after use and can be transported to save space, stored and rebuilt in a different arrangement.

The kraft paper sheet can be printed or otherwise made promotional or artistic. In this way, the respectively visible outer surfaces of the construction, ranging from the seat element to complex furniture structures, can be made variable. The kraft paper sheet has in the case of use on an outside also visuel ^¬ le meaning. The use of kraft paper sheets as connection and decoration elements must be changing Promotional purposes or design needs only the paper sheets are replaced or reprinted.

Another aspect of the invention includes a combination of a plurality of above-described seat elements and / or stacking elements, wherein the outer shell of at least two seat or stacking elements is formed by a common outside ^¬ de tubular hollow column.

In the embodiment, a column or a bench each of the last three hollow columns may be staggered as a cladding element to a hal ^¬ bes grid to cover the seam of the wrapping elements and at the same inboard ^¬ tig to increase the stability. Also conceivable are wrapping elements with double or a further integer multiple of the usual length, which connect two or more even more seat elements like a tube.

The columns or benches thus obtained can in turn be arranged side by side or one above the other. Then again arise podiums, bed frames, rear walls, counters and ^¬ same.

Further advantageous developments and refinements of the invention will become apparent from the embodiments described in principle below with reference to the drawings.

It shows:

1 shows a sequence of schematic illustrations of a construction manual for a seat element; FIG. 2 shows a sequence of schematic illustrations of a construction manual for a stacking element; FIG.

3 is a sequence of schematic illustrations of a construction manual for an internal reinforcement;

Fig. 4 is a schematic representation of an internal

Stiffener with flat intermediate piece and square column elements;

Fig. 5 is a schematic representation of an internal

Stiffener with triangular column elements;

Fig. 6 is a schematic representation of an internal

Stiffener with zig-zag-shaped intermediate piece;

Fig. 7 is a schematic representation of an internal

Stiffener with meandering intermediate piece;

Figure 8 is a schematic interior view with two mirror image ^¬ lich each other arranged inside stiffeners with a flat intermediate piece.

Figure 9 is a schematic representation with two mirror image ^¬ lich each other arranged inside stiffeners with zig-zag-shaped intermediate piece.

10 shows a schematic representation with two mirror-image ^¬ lich each other arranged inside stiffeners with a circular intermediate piece.

11 is a schematic representation with a plurality of internal stiffeners.

12 shows an overview of a plurality of stiffeners with reinforcing elements for internal placement in the schematic interior view according to FIG. 13;

13 is a schematic interior view with a plurality of mirror-image mutually arranged inner stiffeners. Figure 14 is a schematic view for connecting two outer tubular tubular columns by means of a paper sheet.

Fig. 15 is a perspective view of the arrangement according to

Fig. 14;

16 shows a schematic illustration of a combination of two seat elements in the region of the common connection surface;

17 shows a perspective view of a combination of two seat elements according to FIG. 16.

Fig. 1 shows a schematic representation of a construction manual for a seat element 1. The sequence for assembly is shown in the pictures from top left to bottom right.

The seat element 1 consists in this case of two inside ^¬ lowing stiffeners 2, which are arranged in mirror image back to back to each other (Sketches Nos. 1 and 2). About the stiffeners 2, a first outer sheath member 31 is pushed (sketches Nos. 3 to 6), which has the shape of a tubular hollow column with opposing openings. Over the first outer cladding element 31, a further second outer cladding element 32 is pushed crosswise (Sketch Nos. 7 to 11). Finally, a third outer sheath member is again cross 33 mounted from above (Skiz ^¬ zen Nos. 12 to 16) so that the outer envelope 3 consists of three dia ^¬ diametrically superimposed wrapping elements 31, 32, 33. From this outer shell 3, the stiffener 2 is enclosed on all sides. This modular kit is built without tools. By mutual tension of äuße ^¬ ren shell 3 with the inner stiffener is formed on pressure stable body for a seat element 1, which, however, can be stacked just as well.

Fig. 2 shows a schematic representation of a construction manual for a stacking element 10. The sequence for assembly is shown in the pictures from left to right. The Stapelele ^¬ ment 10 consists of an inner stiffening 2 (sketch no. 1). About the stiffener 2, an outer Hüll ^¬ element 31 is pushed (sketches Nos. 1 to 2), which has the shape of a tubular hollow column with opposite openings.

From this shell 3, the stiffener 2 is enclosed on four side surfaces, the front and back remains open. This modular kit is also built without tools. Mutual bracing of the outer shell with the inner element creates a suitable base for a stacking element, which can be gesta ^¬ pelt to a larger unit. Drawing no. 3 shows two superposed stacking elements 10. This can can also be combined with Sitzele ^¬ segments. 1 Usually the Stapelele ^¬ ments for storing items remain on one side or both sides open.

Fig. 3 shows a schematic representation of a construction manual for an internal stiffening 2. The stiffener 2 is formed from an originally planar one-piece cardboard material, so that at both ends 21 two column elements 22 are formed, which are spaced by an intermediate piece 23 (Sketch no. 1 to 8). A closure mechanism 26 ver ^¬ latches the material to a stable and pressure-relie ^¬ ren column member 22. As a closure mechanism 26 is a foldable tab into consideration, which engages in a recess on the cardboard longitudinal side. The axis of symmetry or longitudinal axis A of the column elements 22 of such stiffeners 2 is aligned so that it shows in the assembled state parallel to the direction of the expected pressure load.

Fig. 4 shows an internal stiffening 2 with a flat intermediate piece 23 and rectangular column members 22 at the ends 21. For molding the column members 22 of the stiffening are the Side surfaces 24 folded along fold lines 25, the dur ^¬ fen parallel to the column longitudinal axis. Similarly, from Fig. 4, the shutter mechanism 26 can be seen with the folding tab, which engages in an overlap region of the cardboard material in a recess on the cardboard longitudinal side. 5 shows a schematic representation of an inner bracing 2 with triangular column elements 22. With different shapes of the bracing 2 it is possible to respond specifically to the type of external stress. Fig. 6 shows a schematic representation of egg ^¬ ner inner stiffener 2 with zigzag-shaped intermediate piece 23 and square column members 22. Fig. 7 shows a schematic representation of a stiffener 2 interior with a meandering intermediate part 23. In the in Fig. 6 and 7 shown forms next to the supporting column members 22 and the spacer 23 a special supporting effect.

FIG. 8 shows a schematic interior view with two mirror- ^shaped stiffeners arranged inside each other in a mirror-image manner. gene 2 with a flat intermediate piece 23 and rectangular pillar elements 22. The stiffeners 2 are, so to speak, back to back in the middle in the first outer envelope member 31 and support ^{¬ in} particular the areas on the cube edge.

Fig. 9 shows a schematic diagram with two mirror ^¬ images of each other arranged inside stiffeners 2, with zigzag-shaped intermediate piece 23. The stiffeners 2 are again back to back center of the first outer casing element 31, with the two zigzag- shaped intermediate pieces 23 to square pillar structures supplement. The square columns formed from the intermediate pieces 23, as well as the peripheral rectangular column elements 22, have a stabilizing effect in the same direction.

Fig. 10 shows a schematic diagram with two mirror ^¬ images of each other arranged inside stiffeners 2 with a semicircle-like intermediate piece 23. Two identical spacers 23 form a round pillar-like support, which is supported in particular the face centers of a seat ^¬ or pile element 1, 10.

Fig. 11 shows a schematic representation with a plurality ^¬ figure internal stiffeners 2 and square pillar elements 22. These form a stiffener 2 supports a seat or pile element 1, 10 on the entire surface from.

FIG. 12 shows an overview of a plurality of stiffeners 2 with internal placement reinforcing elements 27 and 28 in the schematic interior view according to FIG. 13. The overview illustrates the manner indicated by arrows, such as the further reinforcing elements 27 and 28 in FIG the cavities of the existing internal stiffening 2 are to be inserted.

Fig. 13 shows a schematic interior view of a multi ^¬ plurality of mirror-images of each other arranged inside stiffeners 2 in a sheath member 31, Moreover, the reinforcements are inserted into the square in cross-section column members one internal web 2 27 or pushed ^¬. In the application as a seat element arises in this arrangement filled with reinforcements 27 and 28 Innenaussteifungen 2 the advantage that it is equally high load over all three axes of the cube, especially if the two outer and the central cavity of the inner stiffeners 2, for example, with folded corrugated cardboard filled out the ^¬ .

When used as a shelf bottom is omitted on the middle reinforcement 28. In shelf floors, only the two square pillar elements of Innenaus ^¬ stiffening 2 are filled with reinforcing elements 27th This has the advantage of transversely arranged shelves that they aushal ^¬ th a much higher pressure load especially when inserting heavy objects, such as books or objects made of metal, glass or ceramic.

Fig. 14 shows a schematic view for connecting two outer tubular hollow columns 33 by means of a paper sheet 4. The respective adjacent side surfaces of the open outer hollow columns 33 are enveloped as enveloping elements with a paper sheet 4 together to combine a plurality of seat or stacking elements. in this connection The paper can be secured against slipping with adhesive tape. For decoration and advertising purposes, other outer visible sides of the enveloping elements can be wrapped with paper strips.

The paper sheets 4 are fixed by the insertion of the back-to-back inner stiffeners (not shown in the figure). For permanent solutions, both the paper sheets 4 with the hollow column 33 as the enveloping element and the inner stiffeners with the paper sheets 4 can be glued surface. For temporary solutions which are completely re ^¬ reversibly, it is sufficient if the Innenaussteifungen be single ^¬ Lich inserted into the open wrapping elements 33rd

Fig. 15 shows a schematic representation of the arrangement shown in Fig. 14. This recording illustrates created by means of a sheet of paper 4 connecting two Hüllelemen ^¬ th 33rd

16 shows a schematic representation of the combination of two seat elements in the region of the common connection surface. The adjacent side surfaces of the open Hüllelemente 32 are wrapped with a strip-like paper sheet 4 together and connected to each other. Again, the paper can be secured with tape to prevent slipping. For decoration and advertising purposes, the outside visible sides of the enveloping elements can be wrapped with paper strips. The paper strips for decoration and advertising purposes are shown hatched in the figure. The paper strips are fixed by the insertion of two diametrically arranged enveloping elements 31. In these two enveloping elements 31 are the interior stiffeners (not visible in the figure). These are installed perpendicular to the pressure load. Fig. 16 illustrates the manufacture of a seat or pillar with hidden joints. After first the two open enveloping elements 32 are connected to each other with paper strips, then the open enveloping elements 32 are filled. The third and decorative strip enveloped with paper strip 33 is pushed diametrically to the inner enveloping elements 31, 32 over the column and in such a way that it covers the joint of the inner enveloping elements 31, 32. Not only does this design have visual benefits, it also increases the flexural rigidity of the entire design. Such columns or benches can be produced in any length. As a conclusion piece each further halved wrapping element 33 can be pushed at the two ends. Fig. 17 shows a schematic representation of a combination of two seat elements according to Fig. 16. This illustration also illustrates the cladding of the outer shell of a seat member, the paper strips are shown hatched for decoration and advertising purposes in the figure.

Claims

Patent claims

1. seat element (1) with at least one inner Aus ^¬ stiffener (2) and an outer shell (3),

characterized ,

in that the outer shell (3) consists of at least two tube-like hollow columns which are pushed into each other in a crosswise manner as enveloping elements (31, 32, 33).

2. Seat element according to claim 1,

d a d u r c h e c e n c i n e s that

the inner reinforcement (2) is integral and at least at the ends (21) of two column elements (22), which are spaced by an intermediate piece (23).

3. Seat element according to claim 1 or 2,

d a d u r c h e c e n c i n e s that

the length and height of the wrapping elements (31, 32, 33) vary in dependence ^¬ From the wall thickness of the building material so that they fit into each other exactly.

4. stacking element (10) with at least one inner bracing (2) and an outer shell (3),

characterized ,

that the outer shell (3) consists of a tubular hollow column as an enveloping element (31) and,

in that the inner reinforcement (2) is in one piece and consists at least at the ends (21) of two column elements (22) which are spaced apart by an intermediate piece (23).

5. sitting or stacking element according to one of claims 1 to 4,

d a d u r c h e c e n c i n e s that

the column elements (22) of the inner Ausstei ^¬ tion (2) have a square, rectangular, triangular or rounded shape.

6. sitting or stacking element according to one of claims 1 to 5,

d a d u r c h e c e n c i n e s that

the side faces are folded (24) of the column members (22) along fold lines (25) extending parallel to the columns ^¬ longitudinal axis (A).

7. sitting or stacking element according to claim 6,

d a d u r c h e c e n c i n e s that

along the fold lines (25) grooves or grooves are provided, along which the inner Ausstei ^¬ tion (2) is folded.

8. sitting or stacking element according to one of claims 1 to 7,

d a d u r c h e c e n c i n e s that

the enveloping elements (31, 32, 33) and the inside

Reinforcement (2) made of cardboard or cardboard.

9. sitting or stacking element according to one of claims 1 to 8,

characterized in that the intermediate piece (23) of the inner stiffener (2) is flat, circular, meander-shaped or zigzag-shaped.

Seat or stacking element according to one of claims 1 to 9,

d a d u r c h e c e n c i n e s that

two inner braces (2) are arranged in mirror image to each other in the middle of the outer shell (3).

Seat or stacking element according to claim 10,

d a d u r c h e c e n c i n e s that

the intermediate pieces (23) geometrically complement each other in two mirror-inverted inner braces (2) and in this case in the longitudinal axis (A) withstand a particular pressure load.

Seat or stacking element according to one of claims 1 to 11,

d a d u r c h e c e n c i n e s that

a plurality of internal stiffeners (2) are arranged.

Combination of a plurality of seat elements (1) and / or stacking elements (10) according to one of claims 1 to 12, in which a

at least the externally arranged tubular Hohlsäu ^¬ le (33 or 31) of a seat or stacking element with the outer tubular hollow column (33 or 31) a nes immediately adjacent arranged sitting or stacking element is connected.

14. combination of a plurality of seat and / or stacking elements according to claim 13,

d a d u r c h e c e n c i n e s that

the outer tubular hollow columns (33 or 31) of the immediately adjacent arranged sitting or stacking elements on a common contact surface abut ^¬ , wherein the side surfaces of the common contact surface of the tubular hollow columns (33 or 31) with band-shaped material (4) are wrapped ,

15. combination of a plurality of seat elements (1) and / or stack elements (10) according to one of claims 1 to 12,

d a d u r c h e c e n c i n e s that

the outer shell (3) is formed of at least two seat or Stape ^¬ lelemente by a common outer röhrenar ^¬ term hollow column (33 or 31).