Seating furniture and upholstery for such a

Abstract

Seating furniture (10) with a) a support frame (12) which has at least one support arm (14, 16), and b) a cover (26) which is arranged on the support frame (12) such that the support frame (12) is at least partially covered by the cover (26), wherein the cover (26) has a textile surface structure, characterized in that c) at least one support arm (14, 16) has a plurality of retaining tongues (22) lying side by side along the support arm and d) the cover (26) has a plurality of adjacent tongue pockets (30) which are designed and intended to receive the retaining tongues (22) of the support arm (14, 16).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention

[0001] The invention relates to a seating furniture, in particular a chair, with a) a support frame having at least one support arm; and b) a cover which is arranged on the support frame in such a way that the support frame is at least partially covered by the cover, wherein the cover comprises a textile fabric, in particular a shaped knit fabric.

[0002] The invention further relates to a cover for such a piece of seating furniture. 2. Description of the state of the art

[0003] Seating furniture in which a cover is stretched over a supporting frame, which can, for example, define the backrest of a chair, is well known. In particular, variants are also known in which the cover is not stretched over upholstery, but in which the supporting frame essentially defines the outer shape, for example, of the backrest or the seat. The cover is then cantilevered between two support arms of the supporting frame, thus providing a flat surface for the user of the seating furniture. Seating furniture designed in this way has the advantage that, thanks to the cantilevered cover, very pleasant ventilation is usually guaranteed.

[0004] Since the cover must support the user's weight, it must be ensured that the cover is tightly stretched across the support frame and cannot detach from it. Currently, the support frame has an outward-facing groove running along the support arms, into which the edges of the cover are inserted.

[0005] A so-called piping strip, an elongated strip made of metal or plastic, is sewn into the edge of the cover. The piping strip is inserted along the outward-facing groove during installation of the cover on the support frame, and the cover is then stretched in the opposite direction over the top of the support arm facing the cover. The cover also has a piping strip on the opposite edge, which is inserted under tension into the groove of the support arm on the opposite side of the support frame. This is described, for example, in DE 10 2012 219 241 A1.

[0006] Since when the cover is loaded, the tensile force pulls the piping strip into the groove and can only be released from the groove by an opposite movement, the cover is thus held securely on the supporting frame.

[0007] The disadvantage of the current state of the art is that the production of the cover requires a work step in which the piping strip is attached to the cover and sewn in.

[0008] To avoid a piping strip, DE 10 2016 207 651 A1 provides that a textile covering, for example for seating or reclining furniture, which is woven, knitted or crocheted from a combination of threads, is glued to opposite frame parts of a frame by means of an adhesive.

[0009] DE 10 2012 219 241 A1 further describes a seating component for a piece of furniture in which a cover can be slipped over a frame in a bag-like manner, provided the cover is formed as a single piece, e.g., in the shape of a bag. Another embodiment of the seating component provides a clip strip instead of a piping strip, through which an upholstery cover can be clipped onto a backrest frame of the seating furniture. SUMMARY OF THE INVENTION

[0010] It is therefore an object of the present invention to provide a piece of seating furniture of the type mentioned above which is improved with regard to the manufacturing process.

[0011] According to the invention, this is achieved in a piece of seating furniture of the type mentioned above in that c) at least one support arm has a plurality of retaining tongues arranged side by side along the support arm and d) the cover has a plurality of adjacent tongue pockets which are designed and provided to receive the retaining tongues of the support arm.

[0012] The inventor realized that a piping strip could be dispensed with by providing adjacent tongue pockets on the cover. Complementary retaining tongues are then provided on the support arm, which engage in the tongue pockets when the support frame is being covered, thus securing the cover.

[0013] According to the invention, the function of the piping strip is thus replaced by the fact that the cover would also have to be moved out against the direction of pull when loaded due to the large number of adjacent pockets, which, however, is prevented by the individual pockets.

[0014] It is preferably provided that at least two support arms have a plurality of retaining tongues.

[0015] Although the advantage of the invention is already evident in the provision of retaining tabs and tongue pockets on only one side, i.e., on only one support arm, it is particularly advantageous to completely dispense with piping strips and to provide tongue pockets on two opposite sides of the cover, which interact with two support arms. A support arm is conceivable, for example, on covers sewn onto one side of a support frame, as is sometimes found on armchairs. Generally speaking, the retaining tabs can be arranged on any side of a support frame to which the cover must be attached, in particular all the way around. Furthermore, the invention is applicable regardless of whether the cover is self-supporting or on upholstery.

[0016] Preferably, the retaining tabs point outward, particularly vertically or horizontally on each support arm. Although the retaining tabs can also be oriented in other directions, for example, along the support arm or diagonally, the self-locking function of the cover when subjected to a load by the user is primarily achieved when the retaining tabs point outward, i.e., when their free end points outward relative to the support frame.

[0017] Preferably, the retaining tongues are formed by notches on otherwise smooth edges of the support arm.

[0018] This way, only minimal modifications are required compared to conventional support arm structures. The otherwise familiar outward-facing groove can still be provided, and the individual adjacent retaining tabs of the support arm can be formed by appropriate notches on the groove cheek facing the cover. The notches can be added subsequently during a machining step of the support arm or from the outset, for example, during an injection molding process.

[0019] It is preferably provided that the textile fabric is formed with a double surface, comprising a cover layer and a support layer, and that the tongue pockets are formed by constrictions between the cover layer and the support layer.

[0020] With a double-layered cover, the tongue pockets can be manufactured particularly easily by having the top layer form one side of the pocket and the base layer the other. It then only needs to be ensured that the pocket has an opening, preferably facing inward, for inserting the retaining tongue between the top layer and base layer.

[0021] The constrictions between the surface layer and the base layer can be created, for example, by a seam, the course of which preferably essentially follows the notches on the support arm.

[0022] Preferably, however, the constrictions between the cover layer and the base layer in a 3D shaped knit fabric are provided as a textile fabric by knitting the cover layer and the base layer.

[0023] It is preferably provided that the base layer, the cover layer and the existing tongue pockets are formed exclusively by one or more threads running through and continuous in the transverse direction.

[0024] With a 3D shaped knit fabric as a textile fabric for the cover, the individual adjacent tongue pockets can be created during a single knitting process, so that no further work step is necessary.

[0025] With regard to the cover for a piece of seating furniture, the object according to the invention is achieved in that the cover has a plurality of adjacent tongue pockets which are designed and provided to receive retaining tongues formed on a support arm of a piece of seating furniture.

[0026] Such a cover can be manufactured more cost-effectively than a previously known cover with a sewn-in piping strip.

[0027] It is preferably provided that the textile fabric is formed with a double surface, comprising a cover layer and a support layer, and that the tongue pockets are formed by constrictions between the cover layer and the support layer.

[0028] It is preferably provided that the base layer, the cover layer and the existing tongue pockets are formed exclusively by one or more continuous and continuous threads in the transverse direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In the following, exemplary embodiments of the invention are explained in more detail with reference to the drawings. In these drawings: Fig. 1 is a schematic front view of a chair with a cover according to the invention; Fig. 2 a cross section along the line AA Fig. 1; Fig. 3 a section along the line BB Fig. 1; Fig. 4 a rear section of the cover in unassembled condition; Fig. 5 a rear section of a modified cover in unassembled state. DESCRIPTION OF PREFERRED EMBODIMENTS

[0030] Fig. 1 shows a chair designated 10 as an example of seating furniture.

[0031] The chair 10 has a backrest with a supporting frame 12, which determines the basic shape of the backrest. The supporting frame 12 has two support arms 14 and 16 arranged on the left and right in the figure, which are attached at their lower ends to a seat surface 18 and connected at the top by a crossbeam 20.

[0032] The support arms 14 and 16 have a plurality of adjacent retaining tongues 22. As can be seen from the Fig. 1, the retaining tongues 22 are formed by notches 24 on the support arms 14 and 16. A retaining tongue 22 is thus delimited at the top and bottom by a corresponding notch 24.

[0033] A cover 26 is stretched over the support frame 12. This cover 26 is generally designed as a textile fabric. However, in the present embodiment, the cover 26 is shown as a 3D shaped knit fabric. The cover 26 can thus be knitted in advance in such a 3D shape that it can be stretched directly onto the support frame 12 after the knitting process, without the need for further cutting to the shape of the support frame 12.

[0034] The cover 26 further comprises, arranged laterally here, a plurality of adjacent tongue pockets 30 in which the retaining tongues 22 are received.

[0035] How to Fig. As can be seen in Figure 2, the cover 26 is a double-surface fabric with a cover layer 32a and a support layer 34a. In the self-supporting area of ​​the backrest, a filling (not shown) in the form of a curling filling thread is inserted between the cover layer 32a and the support layer 34a, creating a three-dimensional structuring of the surface of the cover 26. Alternatively, a spacer knit is also conceivable.

[0036] In the area of ​​the support arms 14 and 16, however, the cover layer 32a and the support layer 34a form a cover layer side surface 32b and a support layer side surface 34b of the tongue pockets 30. The retaining tongues 22 then engage in these tongue pockets 30 between the cover layer side surface 32b and the support layer side surface 34b.

[0037] How to Fig. 2, the support arms 14 and 16 are also shown with a projection 38 running longitudinally and parallel to the row of retaining tongues 22, so that, as in a cover with a piping strip, a groove 37 running in the longitudinal direction of the support arms 14, 16 is formed between the projection 38 and the retaining tongues 22. The projection 38 is not necessary for the present invention. However, in this way, a support frame can be provided that is suitable both for a cover 26 according to the invention and for a cover with a piping strip according to the prior art.

[0038] Out of Fig. 3 shows that the individual tongue pockets 30 are formed by constrictions 42 between the top layer side surface 32b and the base layer side surface 34b. The constrictions 42 are spaced such that they coincide with the notches 24 on the support arms 14 and 16.

[0039] In addition, the cover 26 has transverse entanglements 43 in extension of the constrictions 42 (cf. Fig. 1) between the cover layer 32a and the support layer 34a, which essentially serve to shape the surface structure of the cover 26.

[0040] Finally, in the rear view of the cover 26 in Fig. 4 that an opening 44 is formed between each of the constrictions 42, through which the retaining tongues 22 are inserted into the tongue pockets 30 when the cover 26 is being covered.

[0041] As already mentioned Fig. As explained in Figure 2, particularly in the case of a 3D-molded knitted fabric, the tongue pockets 30 can be formed by an unfilled area between the base layer side surface 34b and the cover layer side surface 32b. The opening 44 then provides the appropriate access to this area.

[0042] Fig. Figure 5 shows a modified cover 26, which is essentially single-surface and thus has only one cover layer 32a. Nevertheless, the tongue pockets 30 are created at the edge by constricting a double-surface fabric. In the case of a shaped knit fabric as the cover 26, this can be produced, for example, by using the upper and lower needle beds of the knitting machine only in the area of ​​the tongue pockets 30. Fig. 5, the cover 26 therefore has the support layer side surface 34b only at the tongue pockets 30, whereas the inner region of the cover 26 has no support layer 34a. To strengthen the inner region of the cover 26, the cover layer 32a can have integrated support threads there. For optical purposes, the constrictions 42 can be continued into the inner region, for example, in the form of different mesh types than the remaining cover layer 32a.

[0043] The cover 26 according to the invention can be mounted on the support frame 12 in a manner almost similar to a previously known cover. Instead of inserting the piping strip, however, the individual tongue pockets 30 must now be slipped onto the respective retaining tongues 22.

[0044] Advantageously, the cover 26 can be knitted from a shrinkable, particularly heat-shrinkable, textile fiber material, so that the tongue pockets 30 can be folded onto the respective retaining tongues 22 without tension. After heat treatment, the knitted fabric can then be shrunk to achieve the final tension of the cover 26.

Claims

[1] Seating furniture (10) with a) a support frame (12) having at least one support arm (14, 16), and b) a cover (26) arranged on the support frame (12) such that the support frame (12) is at least partially covered by the cover (26), the cover (26) comprising a textile fabric, characterized by , that c) at least one support arm (14, 16) has a plurality of retaining tongues (22) lying next to one another along the support arm and d) the cover (26) has a plurality of adjacent tongue pockets (30) which are designed and provided to receive the retaining tongues (22) of the support arm (14, 16). [2] Seating furniture according to claim 1, characterized by that at least two support arms (14, 16) have a plurality of retaining tongues (22). [3] Seating furniture according to one of the preceding claims, characterized by that the retaining tongues (22) point outwards. [4] Seating furniture according to one of the preceding claims, characterized by that the retaining tongues (22) are formed by notches (24) on otherwise smooth edges of the support arm (14, 16). [5] Seating furniture according to one of the preceding claims, characterized by that the textile fabric is double-sided with a cover layer (32a) and a support layer (34a) and the tongue pockets (30) are formed by constrictions (42) between the cover layer (32a) and the support layer (34a). [6] Seating furniture according to claim 5, characterized by that the constrictions (42) between the cover layer (32a) and the support layer (34a) in a 3D shaped knitwear as a textile fabric are provided by knitting the cover layer (32a) and the support layer (34a). [7] Seating furniture according to one of claims 5 or 6, characterized bythat the supporting layer (34a), the covering layer (32a) and the existing tongue pockets (30) are formed exclusively by one or more threads running through and continuous in the transverse direction. [8] Cover (26) for a piece of seating furniture (10) comprising a textile fabric, characterized by in that the cover (26) has a plurality of adjacent tongue pockets (30) which are designed and provided to receive retaining tongues (22) formed on a support arm (14, 16) of the seating furniture (10). [9] Cover according to claim 8, characterized by that the textile fabric has a cover layer (32a) and a support layer (34a), and that the tongue pockets (30) are formed by constrictions (42) between the cover layer (32a) and the support layer (34a). [10] Cover according to claim 9, characterized bythat the supporting layer (34a), the covering layer (32a) and the existing tongue pockets (30) are formed exclusively by one or more threads running through and continuous in the transverse direction.

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