DE20307339U1 - Table underframe has hollow column and longitudinal and cross bars all made of corrugated cardboard and with interfitting slots - Google Patents

Abstract

The underframe has an upright preferably hollow column (1) of polygonal, oval or round cross-section and longitudinal (2) and/or cross bars (3) all made of corrugated cardboard. The walls of the column have at the top edge perpendicular slots (4a, 4b) arranged in pairs to interengage with slots (5a',5b') of the longitudinal and cross bars. The upper end faces of the cross bars protrude beyond those of the walls of the column to form a support plane. The table underframe can be used for advertising and can be printed or form a presentation display.

Description

KARA PPS G 1903

Ina Kara 09.05.2003

Bettelhecker Str. 10
96515 Sonneberg
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Table base

The invention relates to a table base frame, comprising at least one column with a polygonal, oval or round cross-section and longitudinal and/or transverse cross members, on the upper end surfaces of which a table top can be placed and fastened.

Tables of a well-known design all have at least one column. In the case of cocktail tables, this can be a slim column attached to a stable base. In the case of four-legged tables, four such columns are provided in the form of table legs. In addition, it is known, particularly in the case of office tables, to provide two box-shaped columns that also form base cabinets. These box-shaped columns are connected to one another via longitudinal cross members, onto which the table top is placed and secured. The height of the columns can be designed so that the front surfaces of the walls of the columns form a plane with those of the longitudinal cross members, so that the table top also rests on the upper front surfaces of the columns.

The columns used for office desks and other tables are usually made of wood or wood substitutes, namely particle board or plastic-coated blockboard. These panels are mitred in the case of rectangular designs or arranged in a stubby manner, doweled and screwed together. If the columns also form base cabinets, one side is open so that drawers and intermediate shelves as well as doors can be attached or inserted.

Other designs also have open shelves in the columns.

Such tables are long-lasting and expensive, so that inexpensive individual adaptation as a presentation table for short-term use is not an option. Furthermore, designs can only be implemented with considerable effort and a simple exchange of columns is not possible. In addition, such table bases and the table tops placed on them made of wood, chipboard or other materials are very heavy. As bulky goods, they also require expensive loading space for transport.

The invention is based on the object of producing a table base from materials that are particularly light. A further aim is to design the base in such a way that it can be assembled at the place of use in the simplest way possible, even by laymen.

Another aim is to provide advertising space, especially when used as presentation tables, and to be able to use this inexpensively.

The problem is solved by designing the table base according to the technical teaching specified in claim 1.

A table base made according to the invention consists exclusively of corrugated cardboard. Medium-weight and heavy corrugated cardboard can be used for this. Corrugated cardboard is known to be made of environmentally friendly material; it can be recycled or reused for energy without harming the environment.

It is also clear that the use of corrugated cardboard offers weight advantages over all other usable recyclable materials. Corrugated cardboard is

They are also so stable that they can withstand even the highest loads in the longitudinal direction of the columns. In addition, moisture-inhibiting or moisture-repellent corrugated cardboard can be used, so that they can even be used in damp rooms.

According to a further feature in claim 1, the column is designed as a tubular hollow column. This further reduces the weight significantly.

To make assembly easier, vertical slots are punched out of the walls in the upper edge area, into which the longitudinal or cross beams can be inserted. An interlocking insertion technique can also be used if the corresponding cross and longitudinal beams also have slots that correspond to those of the column or columns. The column itself can be designed to be rectangular, for example, simply by folding. In this case, it is not even necessary for the last wall to be connected to the first, for example with an adhesive strip or clamped. The longitudinal and cross beams hold the composite together in an interlocking design. If the longitudinal and cross beams are not to be interlocked but only clamped, it is recommended to connect the last wall to the first with an adhesive strip or clamps. Instead of a rectangular cross section, the column can also have a triangular or other polygonal cross section. It can also be round or oval. Appropriate slots for the longitudinal and/or transverse cross members must then be made in the opposite wall sections of the arched parts. They can hold the assembly securely and also provide sufficient support for a table top to be placed on top.

In order to further secure the connection by means of a plug-in connection, the cross and longitudinal beams can also have slots in the same way and be connected to one another in an interlocking manner. It is also possible to cut out a column wall below the cross and longitudinal beams and to insert drawers or compartments into them, for example. For this purpose, appropriate supports must be provided on the walls, onto which intermediate shelves can be placed. It is therefore possible to make a desk base cabinet out of corrugated cardboard in an equivalent way to conventional wooden desks.

An even better plug connection is achieved by not placing the slots for the longitudinal and/or transverse cross members in the corners of the column walls, but rather at a distance from them, so that the longitudinal and transverse cross members contribute to stabilizing the shape of the column. This is particularly ensured in the design with interlocking slots, so that after the plug connection, the column can no longer be deformed by transverse forces.

In order to increase the dimensional stability of the column even further, folding inserts can also be used. These can extend over the entire height if the column is subject to extremely heavy loads and in particular if loads from lateral forces are to be expected. They can also be designed in such a way that they end below the longitudinal and transverse cross members at a certain distance from them. For this purpose, the inserts can rest on an intermediate floor in a folded state or rest on surrounding edges. In any case, the dimensions and folding technique used for the inserts ensure that the column is dimensional stabilized. In addition, these folding inserts can also be used for additional fixing and

Connection for the cross and longitudinal beams can also be used.

It is also possible to provide the columns with a lower base. This base can be closed so that the column itself is already dimensionally stable so that the other plug-in techniques for holding the longitudinal and transverse cross members can be introduced. This design is particularly recommended if drawer compartments or intermediate floor compartments are to be inserted and at least one side of the column is open for this purpose. This technology can of course also be extended so that there are openings on two opposite sides and drawer inserts can be fitted from both sides. To ensure stability, it is necessary that the corners of the columns remain as angle walls and that the clearance does not extend to the adjacent side wall, but that a load-bearing edge strip is retained.

Even the table top can be made of corrugated cardboard. It can consist of a continuous plate or of corrugated cardboard segments that are put together. It is also possible to make it foldable by cutting grooves across the table top, which make it easier to fold.

It is clear that a table base can be assembled as a flat shipping unit either alone or together with a table top of the specified type, and that the base and the table top can be easily set up at the place of use. This creates a space-saving, lightweight transport unit that is ideal for display tables, for example, to present goods or to make structures on. One example here is a gaming table.

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A railway, a motorway or an entire landscape can be recreated in a model or a pre-assembled plate can be placed on top. The invention also allows the construction of an extra-long table, e.g. by lining up columns at a certain distance and connecting them via the longitudinal crossbars, which can end up adjacent to one another within a column, for example. Party tables of any length can be created in this way.
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The large cardboard surfaces make them ideal for printing or putting up posters.

The individual embodiments of the invention are self-explanatory in the subclaims.

The invention is explained in more detail below with reference to the embodiments shown in the drawings.

In Figure 1, a table base frame is shown in a simplified perspective view with a longitudinal cross member 2 and a cross member 3. This table base frame consists of a rectangular column 1, which can be, for example, 700 mm high and 400 mm wide and 500 mm deep. This column 1 consists of walls la, Ib, Ic, Id and is folded into a tube shape from corrugated cardboard. For this purpose, as Figure 4 shows, the cut has groove lines between the individual wall segments to make folding easier. The cut in Figure 4 also shows that an adhesive strip 19 is provided on the left end, which is folded over another groove line. This tubular column can be easily folded together at the installation site and assembled using the adhesive strip 19, which is glued to the outer edge of the wall Ic on the inside. It is clear that this structure is unstable and lateral pressure causes the rectangle to bend.

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shifts in a diamond shape, which is prevented by the additional means. Slots 4a, 5a, 6a, 7a, 4b, 5b, 6b, and 7b are each punched in the upper edge area. In the blank according to Figure 4, only slots 4a, 5a and 4b, 5b are punched out for the longitudinal cross members 2. The slots on the side walls 1a and 1b with the greater depth serve to accommodate longitudinal cross members 2, which are also made of corrugated cardboard. The slots 6a, 6b and 7a, 7b provided on the narrower sides serve to accommodate cross members. In Figure 1, only two cross members are shown, namely a longitudinal cross member 2 and a cross member 3, in an exploded view, in order to better express the nesting that occurs when the parts are put together. The longitudinal cross member has slots 5a' and 5b' corresponding to the slots 5a and 5b. The cross member 3 has slots 6a' and 6b' in the walls Ic and Id corresponding to the slots 6a and 6b. The other two cross members, not shown, are designed accordingly. The slots 6a and 6b and the other slots are arranged at a distance from the corners in order to automatically achieve a stable molded connection when connecting via the longitudinal and cross members 2 and 3. The depth of the punched slots 6a, 6b corresponds to the height of the material wall in the longitudinal and transverse cross members above the slots 6a', 6b' or 5a' and 5b', so that when the slots 6a' and 6b' of the cross member 3 are inserted into the slots 6a and 6b, the upper front surface of the cross member 3 ends with the upper front surfaces of the walls la, Ib, and Ic. Even by inserting the only cross member 3b shown, the interlocking connection ensures that the column is dimensional stable.

The cross member 3 further comprises slots 10a and 10b at the distance of the slots 4a, 5a, which correspond to the slots in

correspond to the walls la and 1b, that is, are aligned with them. Slots 9a and 9b are also provided in the longitudinal cross members 2, which are arranged at the same distance from the slots 6b and 7b and are aligned with them. If the cross member 3 is now inserted and the longitudinal cross member 2 is inserted into the assembly thus produced, the wall which is above the slot 5a' engages in the slot 5a, the wall section of the longitudinal cross member above the slot 5b' engages in the slot 5b, so that an interlocking, nested connection is produced. At the same time, the wall of the longitudinal cross member 2 protruding above the slot 9a engages in the slot 10b of the cross member 3, so that a secure plug-in connection is provided which fixes both the shape of the column 1 and the connection between the cross and longitudinal cross members 2 and 3. Depending on the size of the table top, the cross members 2 and 3 protrude above the walls la, Ib, Ic of the column 1. A table top can then be placed on these and attached to the end faces, for example using adhesive tape.

Figure 2 shows a variant, namely a triangular column 1, which has walls la, lb and lb. The slots are punched out of the side walls la and lb accordingly in order to accommodate the longitudinal cross members 2. This example shows that the shape of the column can be different. The two embodiments are based on folding the corrugated cardboard. However, a round arrangement can also be chosen so that no folding is necessary. The same principle applies here too.

In such a sleeve-shaped column 1, additional folding inserts 11 and 12 can be inserted for further stability, as can be seen from the top view of a column in Figure 6. In this embodiment, two folding inserts 11 and 12 are inserted, which extend continuously from top to bottom in the column, so that the

Column is highly resilient overall. The cut of such a folding insert 11 is shown in Figure 5. The cut used here is the same for both parts. It has an essentially rectangular basic shape with punched-out corners 17, which each form adjacent end faces 18 for a longitudinal cross member 2, as can be seen from Figure 6. The cut is selected so that folding is possible over the central groove line and the insert lies in a V-shape between the corners 13 and the centers of the side walls. Slots 15 and 16 are provided so that the two folding inserts can be nested inside each other, so that after folding around the groove line 14, the counterpart 12, which has the same contour, can be inserted with its slots and the protruding wall parts into the slots 15 and 16. The diamond-shaped structure is created, as shown in Figure 6. This use stabilizes the shape of the column even without inserting the longitudinal beams 2. If the longitudinal beams 2 are now inserted, as previously described with reference to Figure 1, the longitudinal beams 2 rest against the stop faces 18 of the corner recesses 17. Instead of these recesses 17, slots can also be provided. The length of the slots 15 and 16 is selected so that the parts can be plugged into one another and the upper and lower end faces end on the same level as the end faces of the column walls.

A column of this table base can also be connected to others in a row, as can be seen in Figure 3. For example, two such columns are arranged at a distance from each other and connected to each other via longitudinal crossbars. This makes it possible to create a table of any length using two or more such columns, which can also have different basic shapes. The perspective view in Figure 3 shows the basic structure, whereby the longitudinal crossbars 2 can also be designed to be foldable using transverse groove lines.

To increase stability, it is recommended that the groove lines be placed either in the columns 1 or between the columns; in the latter case, however, they should be offset. 5

List of reference symbols

1 b, b' b b' b b pillar ll, c, d column walls 2 b Longitudinal traverse 3 b Crossbeam 4a, b Slots 5a, Slots 5a', Slots 6a, Slots 6a' , Slots 7a, Slots 8th pillar 9a, Slots 10a, Slots 11 Folding insert 12 Folding insert 13 edge 14 Groove line 15 Slots 16 Slots 17 punched corner 18 punched corner 19 Adhesive strips

Claims (19)

1. Table base frame, comprising at least one column ( 1 ) with a polygonal, oval or round cross-section and longitudinal ( 2 ) and/or transverse cross members ( 3 ), on the upper end faces of which a table top can be placed and fastened, characterized in that - that the column ( 1 ) and the longitudinal cross-member ( 2 ) and/or cross-members ( 3 ) are made of corrugated cardboard, - that the column ( 1 ) is a tubular hollow column, - that the walls ( 1 a, 1 b, 1 c, 1 d) of the column ( 1 ) have vertical slots ( 4 a, 4 b; 5 a, 5 b; 6 a, 6 b; 7 a, 7 b) in the upper edge area, which run downwards by defined lengths from the upper edge surfaces, which are arranged in pairs and are punched out of the opposite walls ( 1 a, 1 b, 1 c, 1 d) or wall sections for clamping and/or interlocking reception of the longitudinal ( 2 ) and/or transverse cross members ( 3 ), - that for the interlocking connection of the longitudinal ( 2 ) and/or transverse ( 3 ) corresponding vertical slots ( 6 a', 6 b'; 5 a', 5 b') are punched out from the undersides, which can be inserted in an interlocking and clamping manner into the slots ( 4 a, 4 b; 5 a, 5 b; 6 a, 6 b; 7 a, 7 b) in the walls ( 1 a, 1 b, 1 c, 1 d) of the column, wherein the length of the slots ( 4 a, 4 b; 5 a, 5 b; 6 a, 6 b; 7 a, 7 b) in the walls ( 1 a, 1 b, 1 c, 1 d) of the column ( 1 ) and the wall parts projecting beyond the slots in the longitudinal ( 2 ) and/or transverse ( 3 ) are coordinated with one another so that the upper end faces of the longitudinal ( 2 ) and/or transverse ( 3 ) cross members protrude from the upper end faces of the peripheral walls ( 1 a, 1 b, 1 c, 1 d) of the column ( 1 ) or form a support plane with them, or - that the slots ( 4 a, 4 b; 5 a, 5 b; 6 a, 6 b; 7 a, 7 b) have a length which is less than or equal to half of the longitudinal and/or transverse cross members ( 3 ) and have a width such that the longitudinal and/or transverse cross members ( 3 ) can be inserted in a clamping manner. 2. Table base frame according to claim 1, characterized in that the longitudinal ( 2 ) and/or transverse cross members ( 3 ) within the column ( 1 ) are connected to one another in the same way by clamping and/or interlocking with one another and that for this purpose the longitudinal ( 2 ) or transverse cross members ( 3 ) have punched-out slots ( 9 a, 9 b; 10 a, 10 b) for receiving the other cross member and/or for interlocking receiving of the other cross member with the slots ( 9 a, 9 b; 10 a, 10 b) provided, the slots ( 9 a, 9 b; 10 a, 10 b) being arranged such that the wall parts of the upper cross members ( 2 ) rest on those of the lower ones. 3. Table base according to claim 1 or 2, characterized in that the slots ( 4 a, 4 b; 5 a, 5 b; 6 a, 6 b; 7 a, 7 b) are arranged in alignment with one another at a distance from the corners of the walls of the column ( 1 ) or at a distance from the outer arched sections of a round or oval column. 4. Table base according to one of the preceding claims, characterized in that folding inserts ( 11 , 12 ) are inserted into the column ( 1 , 8 ) at least in the upper area, which are cut and folded in such a way that they provide a stiffening of the column ( 1 , 8 ) by edges ( 13 ) resting on the walls ( 1a , 1b , 1c , 1d ) and in the corners of the column ( 1 , 8 ) and are formed from cuts with at least one groove line ( 14 ) for folding and have vertical slot arrangements in a row with the slots ( 4a , 4b ; 5a , 5b ; 6a , 6b ; 7a , 7b ) in the walls ( 1a , 1b , 1c , 1d ) of the column ( 1 , 8 ), into which longitudinal cross members ( 2 ) and/or cross members ( 3 ) - with or without slots - can be inserted in a clamping and/or interlocking manner. 5. Table base according to claim 4, characterized in that the folding inserts ( 11 , 12 ) have opposing slots ( 15 , 16 ) for interlocking plug-in connection in the folded state. 6. Table base frame according to claim 4 or 5, characterized in that the folding inserts ( 11 , 12 ) have corner recesses in the edge regions instead of slots for receiving the longitudinal and/or transverse cross members, on the vertical flanks ( 18 ) of which the longitudinal and/or transverse cross members ( 3 ) rest. 7. Table base according to one of claims 4 to 6, characterized in that the folding inserts ( 11 , 12 ) extend over the entire height of the columns ( 1 , 8 ). 8. Table base according to one of claims 4 to 6, characterized in that the folding inserts ( 11 , 12 ) are provided only in the upper region of the column and rest with their lower end faces on stops or an intermediate floor in the column ( 1 , 8 ). 9. Table base frame according to claim 1 or 8, characterized in that a column wall ( 1 c, 1 d) has one or more openings lying one above the other and the side walls ( 1 a, 1 b) have inner corresponding guides for sliding inserts or supports for storage floor inserts. 10. Table base according to claim 1, characterized in that the bottom of the column ( 1 , 8 ) is closed by a folding lid. 11. Table base according to claim 1, characterized in that the columns are angular and manufactured using folding technology and have groove lines and an angled adhesive strip ( 19 ). 12. Table base frame according to one of the preceding claims, characterized in that the table base frame has at least two spaced-apart columns ( 1 , 8 ) arranged in a row and that the two columns are connected to one another via longitudinal cross members ( 2 ), the two columns ( 1 , 8 ) having the same or different cross-sectional shapes. 13. Table base frame according to one or more of the preceding claims, characterized in that a table base frame, consisting of one column ( 1 , 8 ) or two columns ( 1 , 8 ) and the longitudinal and/or transverse cross members ( 2 , 3 ), consists of corrugated cardboard cut-outs as a flat packaging unit and that the cut-outs are only folded at the installation site and can be securely connected to one another by the plug connection as well as the adhesive and clamp connection. 14. Table base frame according to claim 1, characterized in that adhesive surfaces are provided on the upper end faces of the longitudinal and/or transverse cross members ( 2 , 3 ) and/or walls ( 1a , 1b , 1c , 1d ) for fixing a table top. 15. Table base according to claim 1 or 14, characterized in that the table top consists of heavy multi-layer corrugated cardboard and that the table top is designed in one piece or segmented and foldable. 16. Table base according to claim 15 in conjunction with claim 13, characterized in that the table top is part of the packaging unit. 17. Table base frame according to claim 1 or 4, characterized in that the longitudinal cross members ( 2 ) and/or transverse cross members ( 3 ) are designed to be foldable, wherein the groove lines are arranged offset between two columns ( 1 , 8 ). 18. Table base according to claim 1, characterized in that the visible surfaces of the column walls ( 1 a, 1 b, 1 c, 1 d) are advertising surfaces and are printed or postered. 19. Table base according to claim 18, characterized in that the table base is a presentation display or base for structures arranged on the table top.