Seat with a support and with a cover as well as a cover

Abstract

A seat (1) with a support (8) and with a cover (2), wherein the cover (2) has at least one area with two layers, and the area terminates by connections between the two layers, characterized in that the cover (2) is a knitted fabric, wherein at least one area of ​​the cover (2) with two knitted layers (C, D) is designed as a padding area (6, 27, 28, 29), wherein the connections at which the padding area (6, 27, 28, 29) terminates at its lateral edges are knitted as first connection points (20) on knitting rows between the two knitted layers (C, D), wherein the cover (2) in the padding area (6, 27, 28, 29) between the two knitted layers (C, D) has at least one additional filling thread (21) supplied during knitting and wherein the filling thread (21) is held at the first connection points (20).

Description

The invention relates to a seat with a support and a cover, and to a corresponding cover, wherein the cover has at least one area with two layers, which terminates by connections between the two layers, and wherein the cover is a knitted fabric. The invention further relates to a method for manufacturing a corresponding cover. From EP 3 792 107 B1, a seat cover for a vehicle seat is known, comprising a three-dimensionally knitted cover body. The seat cover has at least one functional element integrated into the cover body. The cover body is a spacer knit fabric consisting of two spaced-apart layers of knit fabric, with at least one spacer provided between the knit layers. At least one additional functional element or component, in particular a heating element, a sensor, or a cable, is enclosed within a cavity provided between the knit layers. The seat cover of EP 3 792 107 B1 encloses the vehicle seat. It is provided in addition to a cover with padded areas. The 3D knitting process described in EP 3 792 107 B1 is a flat knitting process. EP 1 752 573 B1 describes a seat, in particular a passenger seat, comprising a backrest, a seat section, and a support frame. The backrest and seat section include a cover referred to as upholstery. The upholstery comprises a layer formed by a textile surface. The textile surface is formed, at least partially, by a spacer fabric consisting of at least two layers spaced apart from each other, with pile threads extending between them. The pile threads space the two layers of the textile surface to create planar 2.5- and / or 3-dimensional structures of the textile surface. The textile surface is connected, at least partially, to a support frame of the support structure by a pretension force oriented parallel to it. The textile surface has knitted edges at least partially along its outer perimeter.On the side of the textile surface facing away from the user, at least in some areas, a foam element is arranged at a distance from the textile surface in a perpendicular direction. The foam element of the padding according to EP 1 752 573 B1 is, in one alternative, located on the outside, at a distance from the spacer fabric, and in another alternative, located between two layers of textile surfaces. In one alternative, at least one receiving space is formed between the layers of the textile surface, which is designed to receive at least one functional element. An air cushion can be used as the functional space. The firmness of the air cushion can be adjusted by means of control elements. Pile yarns are omitted in this area. From DE 10 2013 100 597 A1, a cover fabric for a seat is known which is provided with a piping connection for attachment to a support referred to as a frame. The cover fabric is single-layered or multi-layered and has at least one strip-shaped, single-layered or double-layered, offset transition area, a tubular, double-layered receiving area for a piping core, and a finishing area. The cover fabric is a woven, knitted, or crocheted fabric. The double-layered areas terminate by a layer exchange of the weft threads. The object of the invention is to develop a seat, for example for a vehicle, comprising a support and a cover that includes at least one cushion. The manufacture of the cover with at least one cushion should be simplified compared to known manufacturing methods. This problem is solved by the following features. A seat according to the invention is provided with a support and a cover. The cover has at least one area with two layers. The area(s) terminate at joints between the two layers. To solve the problem, the cover is manufactured as a knitted fabric. At least one area of ​​the cover with two knitted layers is designed as a padding area. The joints at which the padding area terminates at its lateral edges are knitted as first joints on rows of knitting between the two knitted layers. In the padding area between the two knitted layers, the cover has at least one additional filling thread, which is added during knitting. The filling thread is held at the first joints. The quantity and type of filling thread are selected such that a spring effect is created in the padding area.The arrangement of initial connection points at the lateral edges of the padding area allows these connection points to be used to hold the additional filling thread. The filling thread is positioned within the padding area during knitting without any further measures. The arrangement and retention of the filling threads make it easy to create padding within the padding area. A further advantage is that the contour of the padding area is precisely manufactured by the initial connection points at its sides. A cover according to the invention with two knitted layers, in which at least one padding area is provided and thus padding is integrated, is suitable as the sole cover for a seat support. Additional padding is not necessary. The cover bulges outwards in the padding area due to the filling thread(s) and assumes a three-dimensional shape. The cover is knitted in three dimensions.Depending on the pattern of the knitted layers, the two layers are made from one or more base yarns, preferably wool, polyamide, polyester, or blends thereof. The filling yarn is hereinafter referred to as the filling yarn. The filling yarn is preferably made of polyamide, polyester, or other thermoplastic polymers. Alternatively, a strand of the base yarn consists of a single strand of the base yarn. Alternatively, the filling yarn consists of a single strand of the filling yarn. Both the base yarn and the filling yarn have a number of filaments. Alternatively, a strand of the base yarn comprises several single strands of the base yarn. Alternatively, a filling yarn comprises several single strands of the filling yarn. The yarn thickness of the base yarn is 22 dtex to 5000 dtex, preferably 100 dtex to 250 dtex, and more preferably 150 dtex to 180 dtex. The number of filaments of the base yarn is f1 to f1000, preferably f10 to f500.The yarn thickness of the filling yarn is 35 dtex to 10,000 dtex, preferably 200 dtex to 400 dtex. The number of filaments in the filling yarn is f1 to f1,000, preferably f36 to f300. Alternatively, the base yarn and filling yarn are the same. Alternatively, a filling thread comprises more individual threads than a thread of the base yarn. Alternatively, the yarn thickness of the filling yarn is, for example, 100 dtex to 200 dtex greater than the yarn thickness of the base yarn. Alternatively, the yarn thickness of the filling yarn is approximately twice that of the base yarn. In one embodiment, the joints of the padding area, where the padding area terminates at its upper and lower edges, are formed as secondary joints on knitted rows between the two knitted layers. This enables precise production of the padding area according to the desired contour. The second connection points also form an upper and lower boundary for the filling threads.This increases the durability of the padding formed in the upholstery area. In one embodiment, the filling yarn consists of a yarn that shrinks by 2% to 80% during heat treatment, with the filling yarn being shrunken in the padding area of ​​the cover. The heat treatment is carried out at a temperature of 70°C to 200°C, optionally with increased humidity. Preferably, the yarn referred to as the filling yarn consists of a yarn that shrinks by 10% to 60% during heat treatment, e.g., at 80°C. Through heat or steam treatment of the cover after knitting, the filling yarn(s) in the padding area shrink, i.e., they contract. The shrunken filling yarns are more densely arranged due to their larger diameter. The spring effect in the padding area is increased. This results in improved padding. In one embodiment, the knitted layer of the cover facing the user in the padding area exhibits higher elasticity compared to the knitted layer facing away from the user.Greater elasticity of the knitted layer can be achieved by reducing the tension of the base yarn supplied to the knitted layer. Lower tension increases the stitch size. Alternatively or additionally, greater elasticity can be achieved by configuring the knitting machine to produce larger stitches. This increased elasticity causes the knitted layer to curve towards the user in the upholstery area. In this area, the cover takes on a cushion-like shape, forming the padding. In one embodiment, the cover in the padding area has at least one additional spacer thread, added during knitting, made of a yarn hereinafter referred to as spacer yarn. Spacer yarns are known for the production of spacer textiles, including spacer knits. The spacer thread serves to keep the two knitted layers of the cover at a specific distance. The use of at least one spacer thread in the padding area of ​​the cover stabilizes the padding. The spacer yarn is preferably made of polyamide, polyester, or other thermoplastic polymers. The yarn thickness of the spacer yarn is 20 dtex to 2000 dtex, preferably 50 dtex to 600 dtex. The number of filaments of the spacer yarn is f1 to f500, preferably f25 to f300. In one embodiment, the knitted layer of the cover facing the user, at least in the padding area, is knitted with washable yarn, i.e.,The base yarn is a washable yarn. Manufacturing easily cleanable surfaces from washable yarn simplifies seat maintenance. The washable yarn is preferably made of polyamide, polyester, polyurethane, or other thermoplastic polymers and their mixtures. The yarn thickness is 20 dtex to 2000 dtex, preferably 50 dtex to 600 dtex. The number of filaments is f1 to f500, preferably f1 to f100. In one embodiment, the support comprises at least one frame, wherein the frame(s) consist of tubes or profiles. The profiles include solid profiles as well as, for example, keder strips. The covering is connected to the tubes or profiles. In one embodiment, the tubes or profiles form fastening elements. In an alternative embodiment, the profiles are designed as keder strips. The covering is connected to the support by a keder connection. In this connection, at least one keder core forms a fastening element. In one embodiment, the two knitted layers extend across the front and back of the cover. The two knitted layers are joined at the edges of the cover by third and / or fourth connection points. In one example, the two knitted layers are joined by third connection points at the lateral edges of the first and last rows of knitting. Alternatively or additionally, the two knitted layers are joined by fourth connection points at the upper and, if applicable, lower edges of the cover of the first and last rows of knitting. At the joined edges of the cover, the two knitted layers are formed within at least one receiving area, free of connection points. At least one fastening element for attaching the cover to the support is arranged in the receiving area(s). In one embodiment, the cover is knitted as a single piece.The entire cover is knitted in a single process, for example, on a flat knitting machine with two needle beds. The cover has a mounting opening on the side facing away from the user. This mounting opening allows the fastening elements to be inserted into the corresponding receiving areas of the cover. The provision of receiving areas for at least one fastening element enables easy attachment of the cover to the support. The mounting opening allows the support to be covered with the one-piece cover without further measures, in particular without the need for a seam. In one embodiment, the receiving area is tubular due to additional connection points at its inner end. In another embodiment, the cover has at least one padded area in a backrest section of the seat, in particular in a headrest section of the backrest.Additionally or alternatively, the cover has at least one padded area in a backrest section of the seat or in a seat section of the seat. In one embodiment, the cover has two padded areas side by side in at least one section of the seat. The advantage of the seat according to the invention is that a padded area is provided at any desired location in the cover, corresponding to a specific seat contour. In one embodiment, the cover has a structure, for example, a pattern with additional connection points. Features of a method for manufacturing a cover for a seat according to the invention, as well as features of a cover according to the invention, correspond to those of the seat according to the invention and offer corresponding advantages. In a method according to the invention, a cover for a seat is manufactured which has at least one area with two layers. This area terminates at joints between the two layers. The cover is manufactured as a knitted fabric. According to the invention, two knitted layers are knitted, with at least one area comprising the two knitted layers forming a padding area. The joints at which the padding area terminates at its lateral edges are knitted as the first joints on rows of knitting between the two knitted layers. "Knitted" means that the joints are created during the knitting process. During knitting, at least one additional filling thread is introduced into the padding area between the two knitted layers.The filler thread is held at the first connection points. Further process characteristics are explained in the description of the exemplary embodiments. The invention is further explained with reference to the drawing, in which exemplary embodiments are schematically illustrated. The drawings show: Fig. 1 a perspective view of a seat according to the invention with a cover of a first exemplary embodiment with section lines A and B; Fig. 2 a perspective view of a support of the seat; Fig. 3 a front view of the cover in the backrest section of the seat with section lines A and B; Fig. 4 cross-sections A and B through the seat according to Fig. 3; Fig. 5 a front view of a cover in the backrest section of the seat with section lines A and B of a second exemplary embodiment; Fig. 6 cross-sections A and B through the seat according to Fig. 5; Fig. 7 a front view of a cover in the backrest section of the seat with section lines A and B of a third exemplary embodiment; Fig. 8 cross-sections A and B through the seat according to Fig. 7; Fig.9 a front view of a cover in the backrest section of the seat with section lines A and B of a fourth embodiment and Fig. 10 cross-sections A and B through the seat according to Fig. 9 . Fig. 1 shows a perspective view of a seat 1 according to the invention with a cover 2, the front of which is visible. The seat 1 comprises a backrest section 3 with a back section 3a and a head section 3b, a seat section 4, and a leg section 5. The dashed transverse lines shown in Fig. 1 schematically delineate the sections of the seat 1 and thus of the cover 2 from one another. The seat section 4 runs approximately perpendicular to the back section 3. The leg section 5 is inclined slightly downwards relative to the seat section 4 when installed. The cover 2 is three-dimensionally knitted. The cover 2 has two knitted layers C and D with a padding area 6. The two knitted layers C and D extend over the front and back of the cover 2. In Fig. 1, the front knitted layer C is essentially visible. The upholstery area 6 of the cover 2 is formed in the back section 3 of the seat 1, specifically in its head section 3b.The cover 2 has a mounting opening 7 in its rear knitted layer D, which is shown schematically by a dashed line. A cutting line A is located at the level of the upholstery area 6 of the cover 2 in the head section 3b of the seat 1. A cutting line B is located below the upholstery area 6 in the area of ​​the back section 3a of the seat 1. Fig. 2 shows a support 8 of the first embodiment. The support 8 comprises a lower frame 10 and an upper frame 11, the upper frame 11 being formed in the head section 3b of the seat 1. The upper frame 11 is formed by two lateral tubes 12, 13 and an upper tube 14. The lateral tubes 12, 13 are connected to the upper tube 14. The lower frame 10 is formed by two lateral tubes 15, 16 and a lower tube 17. The lateral tubes 15, 16 are shaped according to the shape of the seat 1 and connected to the lower tube 17. The upper frame 11 is designed to be detachable from the lower frame 10. For this purpose, connecting pins 18 are formed at the lower ends of the lateral tubes 12, 13 for connection with the lateral tubes 15, 16 of the lower frame 10. The pipes 12 to 17 form fastening elements for the cover 2. Fig. 3 shows a front view of the backrest section 3 of the seat 1 with section lines A and B. Corresponding cross-sections A and B through the head section 3b with the upholstery area 6 and the back section 3a of the backrest section 3 according to section lines A and B of Fig. 3 are shown schematically in Fig. 4. The two knitted layers C, D are joined to each other by first joining points 20 on knitted rows. The knitted rows at which the two knitted layers C, D are joined are knitted rows of the two knitted layers C, D at the same level of the cover 2, which may be knitted simultaneously. A first joining point 20 is formed, for example, by a knitted stitch of a thread of the base yarn of one of the knitted layers C and D in the corresponding row on the other knitted layer D or C. It is essential that the thread of the first knitted layer C, D extends from this layer to the other knitted layer C, D and is secured there.The first joining point 20 can be formed, for example, by creating a stitch, a loop, or by changing the base yarn. Changing the base yarn creates a crossing of the two knitted layers. The first joining points 20 are formed at the lateral edges of the padding area 6 of the cover 2. In the padding area 6 of the cover 2, at least one additional filling thread 21 is arranged between the two knitted layers C and D. The filling thread 21 is fed in during knitting. The filling thread 21 is held at the first joining points 20 at the lateral edges of the padding area 6. The filling thread 21 extends back and forth within the padding area 6 between the first joining points 20, and thus between the lateral edges of the padding area 6. Preferably, at least one filling thread is fed in all knitted rows within the padding area 6.The filling thread 21 densely fills the space between the two knitted layers C and D in the cushion area 6 with additional threads. In this embodiment, a filling thread 21 consists of three individual threads of the filling yarn, which are shown side by side in Fig. 4. The two knitted layers C, D of the cover 2 are connected to each other by second connection points 22 at knitted rows. The second connection points 22 are knitted at the lower and upper edges of the padding area 6. A second connection point 22 is formed, for example, like a first connection point 20, by a stitch or loop of a knitted layer C, D that is knitted on top of the other knitted layer D, C. The two knitted layers C, D of the cover 2 are connected to each other at their lateral edges by third connection points 23 at the ends of knitted rows. The two knitted layers C, D are knitted without connection points within a lateral receiving area 24 to the third connection points 23. Fastening elements, namely the lateral tubes 12, 13, 15, 16 of the support 8, are arranged in the lateral receiving area(s) 24. A third connection point 23 is, for example,The two knitted layers C and D are formed by crossing or looping the threads of the base yarn supplied to them. The two knitted layers C and D are connected to each other at the top and bottom edges of the cover 2 by fourth connection points 25 on knitting rows at the top and bottom of the cover 2. Within an upper and lower receiving area 26, the two knitted layers C and D are knitted without connection points to the fourth connection points 25. Fastening elements, namely the upper tube 14 and / or the lower tube 17 of the support 8, are arranged in the receiving areas 26. A fourth connection point 25 is a connection of the two knitted layers C and D, for example, by knitting the stitches together and casting off, or formed by starting stitches for a double stitch pickup. The width of the receiving areas 24 and 26 corresponds at least to the diameter of the corresponding tubes 12 to 17. In this embodiment, the knitted layers C and D are knitted with the same base yarn. The base yarn is made of PES with a yarn thickness of, for example, approximately 170 dtex and approximately 48 filaments. The filling yarn is also made of PES. It has a yarn thickness of, for example, approximately 340 dtex and approximately 288 filaments. The filling yarn(s) have shrunk by 50% after steam treatment at approximately 80°C. The knitted layer C of the cover 2, facing the user, exhibits greater elasticity in the padding area 6 compared to the knitted layer D, which faces away from the user. This greater elasticity of the knitted layer C in the padding area 6 is achieved by a lower thread tension in the base yarn knitting layer C compared to the thread tension in the knitted layer D. The knitted layer C curves outwards in the upholstery area 6 and forms the integrated cushion. The cover is knitted in three dimensions. The cover 2 of the first embodiment is knitted in one piece. The knitted layer C forms the front part of the cover, and the knitted layer D forms the back part. The two knitted layers C and D are joined at the edges of the seat area 6 by the first joining points 20 and the second joining points 22. The two knitted layers C and D are joined at the sides by the third joining points 23 and at their upper and lower ends by the fourth joining points 25. For this support 8 with an upper and lower frame 11, 10 made of tubes 12 to 17, the cover 2 is provided with a wide mounting opening 7 in the knitted layer D on the side facing away from the user. The width of the mounting opening 7 is at least 75% of the width of the seat 1. The mounting opening 7 allows the support 1 to be covered with the one-piece cover 2.First, the cover 2 is pulled onto the tubes 12, 14, 13 of the upper frame 11 of the support 1. The tubes 12, 13 are then attached to the tubes 15, 16 of the lower frame 10 of the support 1 using the connecting pins 18. Finally, the cover is pulled over the tubes 15, 16, and 17 of the support 1 using the mounting opening 7. In a method according to the invention, a cover 2 for a seat 1 according to the invention is produced, comprising at least one area with two layers. This area terminates at joints between the two layers. According to the invention, the cover 2 is produced as a knitted fabric. Two knitted layers C and D are knitted, with at least one area comprising the two knitted layers forming a padding area 6. The joints at which the padding area 6 terminates at its lateral edges are knitted as first joints 20 on rows of knitting between the two knitted layers. During knitting, at least one additional filling thread 21 is introduced into the padding area 6 between the two knitted layers C and D. The filling thread 21 is held at the first joints 20. The two knitted layers C and D of the cover 2 are, for example, knitted simultaneously on a flat knitting machine with two needle beds, such as a front needle bed.A needle bed is created for the front knitting layer C and a back needle bed for the back knitting layer D. A first joining point 20 is created within knitting rows by knitting one stitch of one of the consecutive knitting rows on the other needle bed. At least one filling thread 21, carried in a separate yarn guide, is held at the first joining point 20 when the next knitting row is knitted. In one example, a yarn guide for the filling thread 21 is carried along while the two knitting layers C and D are knitted. This yarn guide is led in the padding area 6 in the knitting direction to slightly beyond the joining points 20 in front of the yarn guides of the two knitting layers C and D. This secures the filling thread 21 at the subsequently knitted joining points 20 in each knitting row.The joints where the upholstery ends at its upper and lower edges are formed as second joints 22 on knitting rows between the two knitted layers C, D. The knitted layer C of the cover facing the user in the upholstery area 6 is knitted with higher elasticity compared to the knitted layer D facing away from the user. The two knitted layers C, D extend over the front and back of the cover. The two knitted layers are joined to each other at the edges of the cover 2 by third joints 23 and / or fourth joints 25. At the edges of the cover 2, the two knitted layers C, D are each formed free of joints within at least one receiving area 24, 26. The cover is knitted as one piece with an assembly opening 7 on the side facing away from the user. After knitting, the cover 2 is treated with steam at approximately 80°C. The filling yarn shrinks to approximately...50% and forms a thicker cushion in the upholstery area. To manufacture the seat, the knitted and steamed cover 2 is first pulled through the mounting opening 7 onto the upper frame 11 and then onto the lower frame 10. Alternatively, to increase elasticity, the stitch size of the knitted layer C in the upholstery area 6 is increased. Alternatively, the knitted layer C of the cover 2 facing the user is knitted with washable yarn, at least in the upholstery area 6. A second embodiment, shown in Figures 5 and 6, corresponds to the first embodiment except for the following features. In the head section 3b of the seat 1, two elongated upholstered areas 27 are provided, and in the back section 3a, two further elongated upholstered areas 28 are provided. A third embodiment, shown in Figures 7 and 8, corresponds to the first embodiment except for the following features. The cover 2 has at least one additional spacer thread 30 in the upholstery area 29 in the head section 3b of the seat 1, which is introduced during knitting. During the manufacture of the cover 2, at least one spacer thread 30 is introduced in the upholstery area 29 in addition to the filling thread 21 during knitting. In a fourth embodiment, shown in Figures 9 and 10, the first embodiment corresponds to the following features. The cover 2 is connected to the support by a keder connection. The support has a frame with keder strips 31. One keder strip 31 is indicated on the right side of Figures 9 and 10. A fastening element for the cover 2 is formed by at least one corresponding keder core 32. The keder core 32 is arranged in the receiving areas 24, 26 of the cover 2. The width of the receiving areas 24, 26 is at least the width of the keder core 32. In the connected state, the keder core 32 is arranged with the cover 2 in the keder strips 31 of the support 8. Reference symbol list 1 Seat 2 Cover 3 Backrest section of seat 1 3a Backrest section 3b Headrest section 4 Seat section of seat 5 Leg section of seat 6 Padding area 7 Mounting opening of the cover 8 Support 10 Lower frame 11 Upper frame 12 Side tube of upper frame 11 13 Side tube of upper frame 11 14 Upper tube of upper frame 11 15 Side tube of lower frame 10 16 Side tube of lower frame 10 17 Lower tube of lower frame 10 18 Connecting pin 20 First connection point 21 Filling thread 22 Second connection point 23 Third connection point 24 Receptacle area 25 Fourth connection point 26 Receptacle area 27 Padding area 28 Padding area 29 Padding area 30 Spacer thread 31 Piping strip 32 Piping core 33 Side spacer area 34 Upper spacer area A Section line of a horizontal cut through the backrest section of the seat in the upholstery area B section line of a horizontal section through the backrest section of the seat below theCushion area C front knit layer D back knit layer QUOTES INCLUDED IN THE DESCRIPTION This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature EP 3 792 107 B1

[0002] EP 1 752 573 B1

[0003] DE 10 2013 100 597 A1

[0004]

Claims

A seat (1) with a support (8) and with a cover (2), wherein the cover (2) has at least one area with two layers, and the area terminates by connections between the two layers, characterized in that the cover (2) is a knitted fabric, wherein at least one area of ​​the cover (2) with two knitted layers (C, D) is designed as a padding area (6, 27, 28, 29), wherein the connections at which the padding area (6, 27, 28, 29) terminates at its lateral edges are knitted as first connection points (20) on knitting rows between the two knitted layers (C, D), wherein the cover (2) in the padding area (6, 27, 28, 29) between the two knitted layers (C, D) has at least one additional filling thread (21) supplied during knitting and wherein the filling thread (21) is held at the first connection points (20). Seat (1) according to claim 1 , characterized in that connections at which the upholstery area (6, 27, 28, 29) ends at its upper and lower edges are formed as second connection points (22) on knitted rows between the two knitted layers (C, D). Seat (1) according to claim 1 or 2, characterized in that the filling thread (21) consists of a yarn which shrinks by 2% to 80%, preferably by 20% to 60%, during heat treatment and the filling thread (21) is shrunk in the cushion area (6, 27, 28, 29). Seat (1) according to one of claims 1 to 3, characterized in that the knitted layer (C) of the cover (2) facing the user in the upholstery area (6, 27, 28, 29) has a higher elasticity compared to the knitted layer (D) facing away from the user. Seat (1) according to one of claims 1 to 4, characterized in that the cover (2) in the upholstery area (6, 27, 28, 29) has at least one additional spacer thread (30) supplied during knitting. Seat (1) according to one of claims 1 to 5, characterized in that the knitted layer (C) of the cover (2) facing the user is knitted with washable yarn at least in the upholstery area (6, 27, 28, 29). Seat (1) according to one of claims 1 to 6, characterized in that the support (8) of the seat (1) comprises at least one frame, wherein the frame(s) has tubes (12 - 17) or profiles to which the cover (2) is connected. Seat (1) according to claim 7, characterized in that fastening elements are formed by the tubes (12 - 17) or the profiles. Seat (1) according to claim 7, characterized in that the profiles are designed as keder strips (31) and a fastening element is formed by at least one keder core (32). Seat (1) according to claim 8 or 9, characterized in that the two knitted layers (C, D) extend over the front and back of the cover (2), wherein the two knitted layers (C, D) are connected to each other at the edges of the cover (2) by third connection points (23) and / or fourth connection points (25), wherein the two knitted layers (C, D) are formed free of connection points at the edges of the cover (2) within at least one receiving area (24, 26) and wherein at least one fastening element for fastening the cover (2) to the support (8) is arranged in the receiving area(s) (24, 26). A cover (2) for a seat (1) according to the invention, which has at least one area with two layers, wherein the area ends by connections between the two layers, characterized in that the cover (2) is a knitted fabric, wherein at least one area of ​​the cover (2) with two knitted layers (C, D) is designed as a padding area (6, 27, 28, 29), wherein the connections at which the padding area (6, 27, 28, 29) ends at its lateral edges are knitted as first connection points (20) on knitting rows between the two knitted layers (C, D), wherein the cover (2) in the padding area (6, 27, 28, 29) between the two knitted layers (C, D) has at least one additional filling thread (21) supplied during knitting and wherein the filling thread (21) is held at the first connection points (20).

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