BASIC FRAME FOR A SEATING FURNITURE

Description

[0001] The invention relates to a base frame for a piece of seating furniture with at least two seats, comprising two side parts for setting up the base frame on a base surface, wherein the two side parts are connected to each other in an assembly state of the base frame by means of a crossbar of the base frame in a force-transmitting manner and the crossbar is designed for attaching at least two seats arranged directly next to each other along the crossbar to form the at least two seats of the piece of seating furniture.

[0002] The traverse has one traverse segment per seat for forming the traverse in the assembly state of the base frame, wherein, in the assembly state of the base frame, traverse segments arranged directly next to each other are detachably connected to each other, namely in such a way that the traverse segments arranged directly next to each other in the assembly position of the base frame are connected to each other by means of screw connections in a force-transmitting manner, wherein the traverse segments are each designed as a rectangular support frame and the support frames each have a hollow front rail and a hollow rear rail connected to the front rail by means of two lateral connecting plates in a force-transmitting manner, and wherein the connecting plates of these traverse segments arranged directly next to each other are connected to each other by means of screw connections in a force-transmitting manner.

[0003] Due to the design of the base frame, it is possible to deliver it to the end customer disassembled and then assemble it on-site in their home. This offers the significant advantage that the disassembled base frame can be easily transported through narrow corridors and / or up narrow stairwells, for example, in apartment buildings. Furthermore, existing elevators can be used more effectively, or even made available at all, for transporting the base frame. Finally, handling the base frame is easier due to the lighter weight of the individual parts compared to the fully assembled frame. Overall, transporting the base frame is simple and therefore cost-effective.

[0004] Such basic frames for seating furniture are already known in a variety of embodiments from the prior art. However, these basic frames have several disadvantages. The invention remedies this.

[0005] For example, they referred to the following publications: WO 2023 046 454 A1, DE 203 19 481 U1, DE 19 73 069 U and DE 31 13 863 A1.

[0006] The object of the present invention is to improve a basic frame for a piece of seating furniture.

[0007] To solve this problem, the invention, in conjunction with the preamble of claim 1, is characterized in that the respective screw connection is arranged in a recess or groove of the respective connecting plate that projects in the direction of the directly adjacent connecting plate. The terms "crossbeam" and "crossbeam segments" are used broadly within the scope of the invention. Accordingly, a multitude of conceivable and, for the respective individual case, sensible design and manufacturing embodiments are summarized under these terms.

[0008] The particular advantage of the invention is that a basic frame for a piece of seating furniture is improved.

[0009] In principle, the basic frame according to the invention can be freely selected within wide suitable limits with regard to type, function, material, and dimensions. Accordingly, a large number of different seating furniture pieces can be manufactured using the basic frame according to the invention, so that the basic frame according to the invention can be used as a basis for a wide range of requirements for seating furniture. The term "seating furniture" is to be interpreted broadly according to the invention and includes, for example, furniture that is designed for both sitting and lying down, or solely for lying down.

[0010] A particularly advantageous embodiment of the basic frame according to the invention provides that the crossbeam segments are each designed as identical parts. In this way, the structural design of the basic frame according to the invention for seating furniture is further simplified and standardized, thus significantly facilitating warehousing, manufacturing, transport, and on-site assembly. This standardization of the crossbeam segments for forming the crossbeam of the basic frame according to the invention also allows for higher production volumes, making the overall manufacture of the basic frame according to the invention more cost-effective.

[0011] A further advantageous embodiment of the basic frame according to the invention provides that the front and rear rails are each 1.5 to 3 times as long as one of the connecting plates. This allows the crossbeam segments to be manufactured in a very robust and therefore load-bearing manner, while simultaneously requiring less material. Accordingly, the manufacturing costs and weight of the basic frame according to the invention are reduced. This embodiment also has the further advantage that the depth of the respective crossbeam segment for forming the crossbeam, and thus the required depth of the basic frame according to the invention for seating furniture of typical dimensions, can be kept to a minimum. This makes the basic frame according to the invention suitable for a wide variety of different seating furniture, including seating furniture with a relatively shallow depth.The aforementioned individual components of each truss segment—namely, the front beam, the rear beam, and the two connecting plates—can each be identical parts. The front beam and / or the rear beam can each be a tube or similar component. However, the front beam and / or the rear beam can also have a different shape. For example, rectangular cross-sections, such as a square cross-section, are mentioned here. The respective connecting plate can, for instance, be manufactured as a sheet metal part.

[0012] Another advantageous embodiment of the base frame according to the invention provides that the connecting plates each have a stiffener for increasing their rigidity. Preferably, the stiffener is formed as a reinforcement formed from the respective connecting plate, and particularly preferably, the stiffener is formed as a cup or groove of the connecting plate formed outwards in the assembled state of the base frame. In this way, the rigidity of the connecting plates and thus the robustness of the crossbeam segment produced thereby is further increased. According to the preferred embodiment of this embodiment, the stiffening of the respective connecting plate is made possible in a very simple manner from a design and manufacturing perspective. This applies in particular to the most preferred embodiment of this embodiment.Furthermore, the aforementioned cupping or bead can advantageously be designed as a contact surface for crossbeam segments arranged directly next to each other, so that defined contact surfaces of the crossbeam segments arranged directly next to each other and connected to each other in the assembly state of the base frame according to the invention are obtained by means of these cupping and beads.

[0013] A further advantageous embodiment of the base frame according to the invention provides that, in its assembled state, the base frame has at least one additional support foot arranged between the two side parts for supporting the base frame on the installation surface. Preferably, the length of the support foot is adjustable, and particularly preferably, each crossbeam segment has a fastening element for attaching the support foot to one of these crossbeam segments. This allows base frames according to the invention with more than two seats arranged side by side to be reliably supported on the installation surface of the base frame according to the invention. Accordingly, the base frame according to the invention is also suitable for larger seating furniture. The preferred embodiment of this further has the advantage that unevenness of the installation surface for the base frame according to the invention can be compensated for without additional means.In this particular embodiment of the present further development, the preferred embodiment offers the additional advantage that each individual crossbeam segment is equipped as standard with a fastening element for attaching the aforementioned support foot, thus eliminating the need for any rework on-site by the end customer. The fastening element for attaching the support foot can, for example, be an internal thread formed in the individual crossbeam segment to receive a corresponding screw bolt with an external thread located on the support foot. Of course, other connection techniques known to those skilled in the art and suitable for the specific application are also fundamentally possible for connecting the support foot to one of the crossbeam segments, so that the aforementioned fastening element can be freely selected within wide suitable limits in terms of type, function, material, and dimensions.Such additional support by means of a support leg is appropriate, for example, for seating furniture where the crossbeam of the base frame according to the invention is composed of three or more crossbeam segments, i.e., for seating furniture with three or more seats arranged side by side. Accordingly, it is advantageous to arrange the fastening element in the middle of the respective crossbeam segment, since, for example, in seating furniture with three seats, i.e., with a base frame according to the invention with three crossbeam segments, the support leg is positioned exactly in the middle between the two side panels resting on the base of the base frame according to the invention. Of course, embodiments of the base frame according to the invention are also conceivable in which more than one support leg is used. This would be advantageous, for example, in seating furniture with more than three seats.

[0014] As already explained above, the base frame according to the invention can be freely selected within wide suitable limits. For example, it can be provided that the two side parts each function merely as a support foot. In this way, the two side parts of the base frame according to the invention can be realized in a very simple and therefore cost-effective manner from a structural and manufacturing perspective. However, a preferred embodiment of this further development provides that an armrest of the seating furniture can be detachably attached to each support foot. This increases the functionality of the side parts, since the side parts can no longer serve merely to position the base frame according to the invention on the installation surface, but can also be equipped with armrests that improve the ergonomics of the seating furniture. Furthermore, the armrests could be changed or replaced on-site as desired or required.Accordingly, the side sections of the base frame according to the invention, which are designed as support feet, could each be combined with an armrest from a plurality of different armrests. For example, the armrests of the aforementioned plurality of armrests could differ from one another in terms of ergonomics, shape, material, and / or color. Additional armrests, which would otherwise have to be attached to the seating furniture separately from the base frame according to the invention, are therefore unnecessary. Alternatively to the aforementioned embodiment and its preferred variant, it can also be provided that the two side sections each simultaneously serve as an armrest of the seating furniture. In this way, the functionality is also improved in the manner described above.At the same time, the number of individual parts of the basic frame according to the invention is further reduced by this embodiment, so that the advantages already mentioned above regarding warehousing, manufacturing, transport, and on-site assembly at the end customer's location also apply here. Of course, embodiments of the basic frame according to the invention are also possible in which only a single side panel is simultaneously designed as an armrest or is equipped with an armrest during the manufacture of the seating furniture.

[0015] Further advantages, features, and details of the basic frame according to the invention can be found in the dependent claims and the following description. Features mentioned therein can be essential to the invention individually or in any combination. Thus, the disclosure relating to the individual aspects of the invention can always be referred back to each other.

[0016] The drawings serve only as examples to clarify the invention and are not intended to be restrictive. They show: Fig. 1 shows a first embodiment of the base frame according to the invention, in a perspective view, in its assembled state; Fig. 2 shows the embodiment according to Fig. 1 In analogous representation, with a first seat of the seating furniture mounted on the base frame, Fig. 3 the embodiment according to Fig. 2 In analogous representation, when mounting a second seat on the base frame, Fig. 4 shows a perspective exploded view of a crossbeam segment of the embodiment according to the Fig. 1 , Fig. 5 the truss segment according to the Fig. 4 In perspective view, Fig. 6 shows a second embodiment of the base frame according to the invention, in a perspective view, in its assembled state, Fig. 7 shows a perspective detail view of the second embodiment according to the Fig. 6 in the area of ​​the support foot, Fig. 8 the second embodiment according to the Fig. 6 in a perspective, partial exploded view, Fig. 9 a perspective detail view of the second embodiment according to the Fig. 8 in the area of ​​two directly adjacent connecting plates, in an exploded view, Fig. 10, the second embodiment according to the Fig. 8 in one to the Fig. 8 perspective view rotated by 180° and Fig. 11 the second embodiment according to the Fig. 9 in one to the Fig. 9 Perspective view rotated by 180°.

[0017] In the Figs. 1 to 5 A first embodiment of the basic frame according to the invention for a piece of seating furniture is shown purely by way of example.

[0018] The base frame 2 for a seating furniture 4 designed as a two-seater sofa with two seats 6, 8 comprises two side parts 10, 12 for setting up the base frame 2 on a mounting surface 14, wherein the two side parts 10, 12 are in a Fig. 1 In the illustrated assembly state of the base frame 2, the components are connected to each other by means of a crossbeam 16 of the base frame 2 in a force-transmitting manner, and the crossbeam 16 is designed for attaching two seats 18, 20 arranged directly next to each other along the crossbeam 16 to form the two seats 6, 8 of the seating furniture 4. The seats 6, 8 and the seats 18, 20 are in the Fig. 2 and 3 As shown. In this first embodiment, the two side parts of the base frame 2 each simultaneously serve as an armrest of the seat 4. See the respective image plane for further details. Figs. 1 to 3Side panel 10, shown on the left in each case. In contrast, the one in the respective image plane of the Figs. 1 to 3 The side panel 12 shown on the right is presented as an alternative variant of a side panel, in which the side panel is designed merely as a support leg to which an armrest of the seating furniture can then be detachably attached. The side panels 10 and 12 are in the Fig. 1 For better understanding, this split view is shown transparently. Figs. 1 to 3 This is for informational purposes only and is not particularly relevant in practice. The base frame according to the invention is typically equipped with either side panels analogous to side panel 10 or with side panels analogous to side panel 12. Regardless of the chosen embodiment, the side panels 10 and 12 are detachably connected to the crossbeam 16 by means of screw connections in the assembled state of the base frame 2, in a manner known to those skilled in the art.

[0019] Furthermore, the traverse 16 has a traverse segment 22, 24 for each seat 18, 20 to form the traverse 16 in the assembled state of the base frame 2, wherein in the assembled state of the base frame 2 the traverse segments 22, 24 arranged directly next to each other are detachably connected. See the Fig. 1 .

[0020] As can be seen from a synthesis of the Figs. 1 to 5As can be seen, the crossbeam segments 22, 24 are each designed as identical parts. Accordingly, the further descriptions and drawings, insofar as they refer only to details of the present embodiment, apply in the same way to all identically designed individual parts and connections of the base frame 2. Furthermore, the crossbeam segments 22, 24 are each designed as a rectangular support frame, wherein the support frames 22, 24 each have a hollow front beam 26 and a hollow rear beam 32 connected to the front beam 26 by means of two lateral connecting plates 28, 30, such that, in this embodiment, the front beam 26 and the rear beam 32 are each, by way of example, slightly less than twice as long as one of the connecting plates 28, 30.In the present embodiment, the connecting plates 28, 30 each have a stiffening element 34 for stiffening the respective connecting plate 28, 30, wherein the stiffening element 34 is formed as a stiffening element 34 formed from the respective connecting plate 28, 30, namely such that the stiffening element 34 is formed as a cup or groove of the connecting plate 28, 30 that is formed outwards in the assembled state of the base frame 2. The connecting plates 28, 30 are here, as shown in the . Figs. 4 and 5 Clearly, they are symmetrically designed in relation to each other.

[0021] The respective crossbeam segment 22, 24 is formed here from welded individual parts, wherein the crossbeam segment 22, 24 is formed from a total of four welded individual parts, namely the front rail 26, the two connecting plates 28, 30 and the rear rail 32. The crossbeam segments 22, 24, which are arranged directly next to each other in the assembly position of the base frame 2, are connected to each other by means of screw connections 36 in a force-transmitting manner. The screw connections 36 are only in the ones corresponding to the second embodiment. Figs. 8 to 11 Clearly visible, namely in an exploded view. Accordingly, for this aspect, which is identical in both embodiments, reference is made to the second embodiment. As can be seen in particular from the Figs. 8 to 11As can be seen, the connecting plates 28, 30 of these crossbeam segments 22, 24, which are arranged directly next to each other, are connected to each other by means of screw connections 36 in a force-transmitting manner, wherein the respective screw connection 36 is arranged according to the invention in a cup or groove of the respective connecting plate 28, 30 projecting in the direction of the directly adjacent connecting plate 30, 28, namely in such a way that the aforementioned cups or grooves are at least partially formed as part of the stiffening 34 of the respective connecting plate 28, 30.

[0022] Similarly, the adjacent rear crossbeams 32 of the truss segments 22, 24 are force-transmittingly connected to one another by means of screw connections 38, wherein these rear crossbeams 32 are screwed together by means of a screw plate 40 that overlaps these two rear crossbeams 32. See again the corresponding figures for the second embodiment. Figs. 8 to 11 , in which these screw connections 38 and the corresponding screw plate 40 are clearly visible, namely in an exploded view. Accordingly, reference is made to the second embodiment for this aspect, which is identical in both embodiments. For the purpose of forming the respective screw connection 38, threaded inserts with internal threads are arranged in the rear stiles 32 in a manner known to those skilled in the art, corresponding to the screws of the respective screw connection 38.

[0023] In the Figs. 6 to 11A second embodiment of the basic frame according to the invention is shown, also purely by way of example. The two embodiments are essentially identical in most features, so that the respective descriptions and explanations can be mutually referenced. See also the above descriptions of the first embodiment. Therefore, the second embodiment will be explained below only to the extent of its distinguishing features from the first. Identical or functionally equivalent components are designated with the same reference numerals as in the first embodiment.

[0024] In contrast to the first embodiment, the base frame 2 of the second embodiment is suitable for a seating unit 4 designed as a three-seater sofa. Accordingly, the base frame 2 here has three crossbeam segments 22, 24, 25 instead of two, with the directly adjacent crossbeam segments 22, 24 on the one hand and 24, 25 on the other being connected to each other in the manner already described above. Fig. 6 The illustrated assembly state of the base frame 2 is detachably connected to the crossbeam 16. Each crossbeam segment 22, 24, 25 of the crossbeam 16 is, analogous to the first embodiment, assigned to one of the seats of the now three adjacent seating positions 6, 8, 9. The three seats are in the Figs. 6 to 11Not shown. Due to the greater width of the base frame 2 in the present second embodiment compared to the first embodiment, the base frame 2 in its assembled state has an additional support foot 42 arranged between the two side parts 10, 12 for supporting the base frame 2 on the mounting surface 14, the length of which is adjustable in the present second embodiment. The crossbeam segments 22, 24, 25 each have a fastening element 44, namely a fastening element designed as a threaded insert with an internal thread, for attaching the support foot 42 to one of these crossbeam segments 22, 24, 25. See also the above descriptions. Accordingly, the support foot 42 has a screw bolt 46 with an external thread corresponding to the aforementioned internal thread. The screw bolt 46 is in the Fig 8The aforementioned threads are shown in the Figs. 6 to 11 not explicitly shown. In the present second embodiment, the support foot 42 is screwed into the fastening element 44 of the crossbeam segment 24, which is arranged in the middle of the crossbeam 16, when the base frame 2 is assembled. The respective fastening element 44 is arranged centrally in the front rail 26 of each crossbeam segment 22, 24, 25. The same applies to the crossbeam segments 22, 24 of the first embodiment according to the Figs. 1 to 5 . However, in the case of the base frame 2 of the first embodiment, no support foot is required due to the shorter length of the crossbeam 16.

[0025] Furthermore, the present second embodiment differs from the first embodiment in that the two side parts 10, 12 are each designed merely as a support foot, namely in such a way that a [missing element] is attached to the respective support foot 10, 12. Figs. 6 to 11The armrest of the seat 4 (not shown) is detachably attached. The side panels 10, 12 are, analogous to the first embodiment, each detachably connected to the crossbeam 16 by means of screw connections. For the purpose of creating the aforementioned screw connections, the stiffeners 34 of the connecting plate 28 of the crossbeam segment 22 and the connecting plate 30 of the crossbeam segment 25, each with two screw holes, serve, and two further screw holes are arranged in an additional recess of each connecting plate 28, 30, so that the aforementioned connecting plates 28, 30 are each detachably connected to the respective side panel 10, 12 by a total of four screw connections arranged approximately in a square in the area of ​​the respective front rail 26.In contrast, the side panels of the first embodiment, which are also designed as armrests, are shown here as side panel 10 according to the . Figs. 1 to 3 , detachably connected to the traverse 16 as follows: on the one hand by means of the stiffeners 34 of the connecting plate 28 of the traverse segment 22 and the connecting plate 30 of the traverse segment 25, each with two screw holes arranged therein, and on the other hand by means of two further screw holes arranged in an additional cup of the respective connecting plate 28, 30 and adjacent to the respective rear rail 32, so that the aforementioned connecting plates 28, 30 are each detachably connected to the respective corresponding side part by a total of four screw connections arranged approximately in a rectangle extending from the respective front rail 26 to the respective rear rail 32.

[0026] The detachable connection between the directly adjacent crossbeam segments 22, 24 in the first embodiment and 22, 24 and 24, 25 in the second embodiment is designed analogously across all embodiments to the detachable connection of the crossbeam 16 with the side parts 10, 12 according to the second embodiment. Furthermore, in both embodiments, all screw connections 36 are arranged in the corresponding recess or groove, for example, of the stiffeners 34, of the connecting plates 28, 30, which are directly adjacent to each other in the assembled state of the base frame 2, such that the respective screw head and nut of each screw connection 36 are completely recessed in the corresponding recess or groove. The same applies to all screw connections of the crossbeam 16 with the two side parts 10, 12.Furthermore, all cups and grooves of the connecting plates 28, 30 are designed to be coordinated in such a way that adjacent connecting plates 28, 30 form contact surfaces that lie essentially in one plane. The same applies to the connecting plates 28, 30 that directly abut the side parts 10, 12.

[0027] Due to the design of the base frame 2 in the first and second embodiments, it is possible to deliver the base frame 2 to the end customer disassembled into its individual parts and then assemble it on-site in their home, i.e., to bring the base frame 2 into its assembled state. This has the decisive advantage that the base frame 2, disassembled into its individual parts, can be easily transported through narrow corridors and / or up narrow stairwells, for example, in apartment buildings. Furthermore, any existing elevator systems can be used more effectively, or even at all, for transporting the base frame 2. Finally, handling the base frame 2 is easier due to the lower weight of the individual parts compared to the base frame 2 in its assembled state or a comparable base frame from the prior art.The transport of the base frame 2 is therefore simple overall and thus cost-effective.

[0028] However, the invention is not limited to the present embodiments. See, for example, the related descriptions of optional and / or alternative features of the base frame according to the invention in the introduction and in the explanation of the first and second embodiments. Reference symbol list

[0029] 2 Base frame 4 Seating furniture 6 Seat 8 Seat 9 Seat (second embodiment only) 10 Side panel 12 Side panel 14 Footprint 16 Crossbeam 18 Seat (first embodiment only) 20 Seat (first embodiment only) 22 Crossbeam segment 24 Crossbeam segment 25 Crossbeam segment (second embodiment only) 26 Front rail 28 Connecting plate 30 Connecting plate 32 Rear rail 34 Reinforcement 36 Screw connection 38 Screw connection 40 Screw plate 42 Support foot (second embodiment only) 44 Fastening element, designed as an internal thread 46 Screw bolt with external thread

Claims

1. Base frame (2) for a piece of seating furniture (4) having at least two seats (6, 8; 6, 8, 9), comprising two side parts (10, 12) for setting up the base frame (2) on a set-up area (14), wherein, in a mounted state of the base frame (2), the two side parts (10, 12) are connected to one another in a force-transmitting manner by means of a crossmember (16) of the base frame (2) and the crossmember (16) is formed for fastening at least two seats (18, 20) arranged directly next to one another along the crossmember (16) for forming the at least two seats (6, 8; 6, 8, 9) of the piece of seating furniture (4), and wherein, for each seat (18, 20), the crossmember (16) has a crossmember segment (22, 24; 22, 24, 25) for forming the crossmember (16) in the mounted state of the base frame (2), and, in the mounted state of the base frame (2), crossmember segments (22, 24; 22, 24 and 24, 25) arranged directly next to one another are detachably connected to one another, specifically in such a way that the crossmember segments (22, 24; 22, 24 and 24, 25) arranged directly next to one another in the mounted position of the base frame (2) are connected to one another in a force-transmitting manner by means of screw connections (36), wherein the crossmember segments (22, 24; 22, 24, 25) are each formed as a rectangular supporting frame and the supporting frames each have a hollow front rail (26) and a hollow rear rail (32) connected to the front rail (26) in a force-transmitting manner by means of two lateral connecting plates (28, 30), and wherein the connecting plates (28, 30), which are arranged directly next to one another, of these crossmember segments (22, 24; 22, 24 and 24, 25) are connected to one another in a force-transmitting manner by means of screw connections (36), characterized in that the respective screw connection (36) is arranged in an embossment or bead of the respective connecting plate (28, 30), which embossment or bead is projecting in the direction of the directly adjacent connecting plate (28, 30).

2. Base frame (2) according to claim 1, characterized in that the crossmember segments (22, 24; 22, 24, 25) are each formed as identical parts.

3. Base frame (2) according to claim 1 or 2, characterized in that the front rail (26) and the rear rail (32) are each at least 1.5 times as long as one of the connecting plates (28, 30).

4. Base frame (2) according to any of claims 1 to 3, characterized in that the connecting plates (28, 30) each have a stiffener (34) for stiffening the respective connecting plate (28, 30), preferably in that the stiffener (34) is formed as a stiffener shaped from the respective connecting plate (28, 30), particularly preferably in that the stiffener (34) is formed as an embossment or bead of the connecting plate (28, 30), which embossment or bead is shaped outwards in the mounted state of the base frame (2).

5. Base frame (2) according to any of claims 1 to 4, characterized in that the supporting frame (22, 24; 22, 24, 25) is formed from individual parts welded to one another, preferably in that the supporting frame (22, 24; 22, 24, 25) is formed from a total of four individual parts welded to one another.

6. Base frame (2) according to claim 4 or 5, characterized in that the aforementioned embossment or bead for arranging the respective screw connection is formed as part of the stiffener (34) of the respective connecting plate (28, 30).

7. Base frame (2) according to any of claims 1 to 6, characterized in that the rear rails (32), which are arranged directly next to one another, of the crossmember segments (22, 24; 24, 25) are connected to one another in a force-transmitting manner by means of screw connections (38), preferably in that these rear rails (32) are screwed to one another by means of a screw plate (40) overlapping these two rear rails (32).

8. Base frame (2) according to any of claims 1 to 7, characterized in that the base frame (2) in its mounted state has at least one additional supporting foot (42) arranged between the two side parts (10, 12) for supporting the base frame (2) on the set-up area (14), preferably in that a length of the supporting foot (42) is adjustable, particularly preferably in that the crossmember segments (22, 24; 22, 24, 25) each have a fastening element (44) for fastening the supporting foot (42) to one of these crossmember segments (22, 24, 25).

9. Base frame (2) according to any of claims 1 to 8, characterized in that the two side parts (10, 12) are each formed merely as a set-up foot, preferably in that an armrest of the seating furniture (4) is detachably fastened to the respective set-up foot, or in that the two side parts (10, 12) are each formed at the same time as an armrest of the seating furniture (4).