VEHICLE SEAT

Description

[0001] The invention relates to a vehicle seat comprising at least one frame which forms an outer contour of the vehicle seat, wherein a seat shell is arranged on a front side of the vehicle seat on the frame. State of the art

[0002] Vehicle seats are generally known from the prior art, which comprise a supporting structure on which upholstery elements or shell elements are arranged.

[0003] DE 10 2009 017 375 A1, for example, describes a method for producing a support structure for a vehicle seat and a vehicle seat with such a support structure. The vehicle seat comprises at least one seat shell for the seat part and / or the backrest of the vehicle seat. The method provides a sheet metal part and at least one profile strip. The profile strip is attached to the edge of the sheet metal part, forming the seat shell.

[0004] DE 10 2021 102 229 A1 discloses a foam part for a vehicle seat, wherein a textile layer is formed as a three-dimensionally shaped nonwoven layer. DE 10 2018 206 164 A1 discloses a seat foam part and a seat element, wherein the foam part is provided with a number of flexible support elements. US 2011 / 0266857 A1 discloses a seat with a net-like textile. EP 2 862 747 A1 discloses a seat with belt-like support units. DE 10 2009 059 975 A1 discloses a seat structure made of a dimensionally stable nonwoven fabric. Task

[0005] The object of the present invention is to provide a vehicle seat that is improved compared to the prior art.

[0006] The object is achieved according to the invention with a vehicle seat having the features of claim 1. Solution

[0007] A vehicle seat according to the invention comprises a frame which forms an outer contour of the vehicle seat, wherein a seat shell is arranged on a front side of the vehicle seat on the frame, wherein the seat shell is formed from a, in particular highly resilient, thermally bonded nonwoven fabric, wherein at least one reinforcing element or reinforcement is fastened to a front seat edge and to an upper seat end on the frame and wherein the reinforcing element or reinforcement extends between the front seat edge and the upper seat end at least with a section on a front side of the seat shell and with at least one further section on a rear side of the seat shell.

[0008] The advantages achieved by the invention are, in particular, that such a vehicle seat with a frame and a seat shell attached thereto and a reinforcing element extending longitudinally over the seat shell can be manufactured in a particularly simple and cost-effective manner, has high dimensional stability and rigidity and withstands mechanical loads particularly well and has a particularly low dead weight and is particularly thin.

[0009] As a reinforcing element or reinforcement, for example, a belt, a band or a net can be provided, in particular integrated into the nonwoven fabric.

[0010] Advantageous embodiments, which can be used individually or in combination with one another, are the subject of the subclaims.

[0011] The particularly highly resilient, thermally bonded nonwoven fabric, a so-called thermofleece or thermofelt, has a surface weight of 900 g / m 2 to 1800 g / m 2 , for example more than 1100 g / m 2 . This results in an improved user experience compared to a plastic seat shell. The shape of the seat shell maximizes the surface area in contact with the user. The seat shell has, in particular, a three-dimensional shape adapted to the body shape of a seat occupant, in particular a corresponding surface contour. The seat shell can be reinforced in certain areas. For example, the seat shell made from the thermally bonded nonwoven fabric has a shell thickness of several millimeters, in particular in a range between 2 mm and 5 mm.

[0012] The seat shell made of the thermally bonded nonwoven fabric is particularly dimensionally stable, for example, largely rigid and / or stretch-resistant. The seat shell, which is arranged, in particular attached, to the frame, and the frame together form a supporting structure of the vehicle seat.

[0013] Disassembly and recycling of the vehicle seat are facilitated by the inventive design of the vehicle seat. The thermally bonded nonwoven fabric can, for example, contain approximately 70% to 100% recycled polyethylene and is very lightweight. This also makes the vehicle seat as a whole very lightweight.

[0014] The reinforcing element, in particular a band, net or belt, and / or the frame can be designed in different colors, in particular in a color that differs from a color of the seat shell.

[0015] A further development of the invention provides that the frame forms an outer contour of both a backrest and a seat part of the vehicle seat, as well as a headrest area. The outer contour of the frame has, in particular, a three-dimensional shape. In particular, the seat shell and / or the frame can be adapted to the contour of the body of a seated person.

[0016] The seat shell can, in particular, be formed as a single piece. For example, the seat shell can continuously form a seat part, a backrest, and a headrest area of ​​the vehicle seat. Such a seat shell is easy and cost-effective to manufacture and is particularly lightweight and thin.

[0017] In one possible embodiment, the seat shell at least partially wraps around the frame and / or has cheeks on the sides of the seat part and / or on a front seat edge. The seat shell can, for example, be placed on the frame and secured by partially wrapping around the frame. This can secure the seat shell against lateral slipping on the frame. For example, the seat shell can also be secured to the frame in the edge region by folding, in particular by overfolding or edge folding. Such an attachment of the seat shell to the frame increases the stability of the vehicle seat. In addition, the risk of injury from sharp edges is reduced in the edge regions.

[0018] Furthermore, lateral areas of the seat shell in the area of ​​the backrest and / or the seat part can be curved forward to improve lateral support.

[0019] In one embodiment, the seat shell has one or more openings. The openings serve, in particular, to adapt to the body contours and to ventilate the seat shell, in particular to ensure air permeability.

[0020] For example, several arched openings can be arranged in the area of ​​the backrest in such a way that several tabs pointing downwards in the vertical direction are created in the seat shell, with a tab that is upper in the vertical direction extending into the area of ​​a tab that is lower in the vertical direction.

[0021] Additionally or alternatively, several arched openings can be arranged in the area of ​​the seat part in such a way that several tabs pointing towards the backrest are created in the seat shell, with a tab closer to a front edge of the seat extending into the area of ​​a tab closer to the backrest.

[0022] Additionally or alternatively, an opening may be provided centrally at the front edge of the seat and centrally at an upper seat end within the area of ​​the frame.

[0023] In addition, a heating device can be arranged on the seat shell and / or integrated into it.

[0024] For example, the reinforcing element, in particular a belt, band, or net, is guided through at least some of the openings, so that the reinforcing element lies alternately on a front side and on the back side of the seat shell. The reinforcing element can, for example, extend at least predominantly on a back side of the seat shell.

[0025] An airbag module can be arranged on the frame, for example, on the side of the backrest, particularly in the lumbar area. The airbag module includes, for example, a bracket, an igniter attached to the bracket, for example, by means of threaded bolts on the igniter and nuts, an airbag, and an airbag cover. The airbag cover can also be made of a thermally bonded nonwoven fabric.

[0026] The frame may be secured in the region of the seat portion on each side to a support that is oriented at least substantially vertically. Each support is secured to a first rail element that is or can be engaged with a second rail element that is attached to a vehicle.

[0027] Another embodiment provides for the frame to be designed as a tubular frame. For example, the frame has a curved first tube in the area of ​​a backrest and a seat part. Adjoining the headrest area at the top of the backrest area, the frame has a curved second tube that is inserted into the first tube and connected thereto either detachably or permanently.

[0028] Instead of a single-piece seat shell, the seat shell can also be constructed in multiple parts. For example, the seat shell can comprise a backrest, a seat part, and a headrest area of ​​the vehicle seat as separate sections that are connected to each other by connecting sections.

[0029] The reinforcing element can be designed, for example, as a belt, band, or net. The belt, band, or net is designed, in particular, as a tensioning element or support element, which is attached, for example, at one end to a rear side of the front seat edge and at the other end to a rear side of the upper seat end and supports, in particular regulates, a movement in the longitudinal extent of the seat shell. In particular, the reinforcing element is stretched as a tensioning element between the front seat edge and the upper seat end. The reinforcing element designed as a belt or band is designed, for example, as an elastomer band, a flexible support band, a spring element, and / or a belt-shaped or band-shaped damping element. The belt or band is incorporated, threaded, or integrated into the seat shell as a longitudinal band.Additionally, at least one transverse band or transverse strap can be incorporated, threaded, or integrated into the seat shell. The reinforcing element, in particular a strap, band, or mesh, is formed, for example, from a fabric, a plastic, or a textile. For example, the reinforcing element can be formed from a woven fabric or fibers, such as textile fibers and / or plastic fibers. Support fibers or reinforcing fibers, such as metal fibers and / or carbon fibers and / or thermoplastic fibers, can also be integrated. Figures and embodiments of the invention

[0030] The invention is explained in more detail below with reference to advantageous embodiments illustrated in the figures. However, the invention is not limited to these embodiments. They show: Figure 1 shows a schematic representation of a vehicle seat with a longitudinal adjustment device according to the prior art. Figure 2 shows a schematic view of a vehicle seat with a frame and a seat shell. Figure 3 shows a further schematic view of a vehicle seat. Figure 4 shows a schematic view of the frame without the seat shell. Figure 5 shows a schematic exploded view of the frame. Figure 6 shows a schematic view of an alternative embodiment of the vehicle seat. Figure 7 shows a schematic view of an alternative embodiment of the continuous seat shell. Figure 8 shows a schematic detailed view of the frame with an airbag module attached thereto. Figure 9 shows an exploded view of the airbag module. Figure 10 shows a schematic detailed view of the frame with a reinforcing element, for example designed as a belt, at an upper seat end.and Figure 11 a schematic detailed view of the frame with the reinforcement element designed as a belt on a front seat edge. ,

[0031] Corresponding parts are provided with the same reference numerals in all figures.

[0032] One in the Figure 1A vehicle seat 1 schematically illustrated in the prior art is described below using three spatial directions running perpendicular to one another. In a vehicle seat 1 installed in the vehicle, a longitudinal direction x runs largely horizontally and preferably parallel to a vehicle longitudinal direction that corresponds to the normal direction of travel of the vehicle. A transverse direction y running perpendicular to the longitudinal direction x is also oriented horizontally in the vehicle and runs parallel to a vehicle transverse direction. A vertical direction z runs perpendicular to the longitudinal direction x and perpendicular to the transverse direction y. In a vehicle seat 1 installed in the vehicle, the vertical direction z preferably runs parallel to a vehicle vertical axis.

[0033] The position and direction specifications used, such as front, rear, top, and bottom, refer to the viewing direction of an occupant sitting in the vehicle seat 1 in a normal seating position, with the vehicle seat 1 installed in the vehicle and in a position suitable for passenger transport with the backrest 2 upright and oriented in the direction of travel as usual. However, the vehicle seat 1 can also be installed or moved in a different orientation, for example, transversely to the direction of travel.

[0034] The backrest 2 can be pivotably mounted on a seat part 3 of the vehicle seat 1. For this purpose, the vehicle seat 1 can comprise a fitting 5, in particular a rotary fitting, such as a locking fitting or a wobble fitting.

[0035] The vehicle seat 1 can comprise a longitudinal adjustment device 4, in particular a rail arrangement with a first rail element 41 and a second rail element 42. The first rail element 41 is adjustable in the longitudinal direction x relative to the second rail element 42. The first rail element 41 is fastened to the seat part 3. The second rail element 42 is fastened to a structural element of a vehicle, for example, a vehicle floor.

[0036] Figures 2 and 3 are schematic views of a vehicle seat 1. The vehicle seat 1 has a frame 6 which forms, in particular completely forms, an outer contour of the vehicle seat 1, in particular both the backrest 2 and the seat part 3 and optionally a headrest area 13.

[0037] On a front side of the vehicle seat 1, a seat shell 7 is arranged on the frame 6 and connected to the frame 6. In a first exemplary embodiment, an edge of the seat shell 7 wraps around the frame 6 partially or completely. In a second exemplary embodiment, the edge of the seat shell 7 can be fastened to the frame 6 by edge folding or crimping. In a third exemplary embodiment, the seat shell 7 can at least partially wrap around the frame 6 and furthermore have cheeks 14 on the sides of the seat part 3 and / or on a front seat edge 9. Furthermore, lateral regions of the seat shell 7 in the region of the backrest 2 and / or the seat part 3 can be curved forward to improve lateral support.

[0038] The seat shell 7 can be adapted to the contours of the body of a seated person. The frame 6 can also be adapted to the contours of the body of a seated person.

[0039] In particular, the seat shell 7 can continuously form the seat part 3, the backrest 2 and the headrest area 13.

[0040] The seat shell 7 is formed in particular from a particularly highly resilient, thermally bonded nonwoven fabric, a so-called thermofleece or thermofelt. For example, the thermally bonded nonwoven fabric (also called a thermally bonded nonwoven fabric) is formed from fibers, in particular plastic fibers, for example thermoplastic fibers and / or other fibers with the aid of thermoplastics and / or binding fibers, which are bonded, in particular glued together, by the influence of heat. Thermal activation can be achieved, for example, by means of hot air or a calender. The nonwoven fabric can also be partially bonded, for example, to enable a border around the frame 6. The nonwoven fabric can be partially welded, in particular by means of ultrasound. By means of such thermal bonding, the bonding strength of the nonwoven fabric is considerably increased, and lighter nonwoven fabrics can be produced.The strength of the thermally bonded nonwoven depends, for example, on the polymer type and on manufacturing parameters such as thermal bonding conditions.

[0041] For example, the thermally bonded nonwoven fabric has a basis weight of 900 g / m 2 to 1800 g / m 2 , for example, more than 1100 g / m 2 . This results in an improved user experience compared to a plastic seat shell. The shape of the seat shell 7 maximizes the surface area in contact with the user.

[0042] The nonwoven fabric can be made, for example, from a polymer material, in particular from polyester, polypropylene, or preferably from polyethylene, or from natural fibers, in particular wool. The nonwoven fabric can, for example, be chemically or thermally bonded, needled, or hydroentangled. The nonwoven fabric is, in particular, hydrophilic or hydrophobic, antistatic, oil-repellent, and / or flame-retardant.

[0043] The seat shell 7 can have one or more openings 8.1, 8.2, 8.3, 8.4, which can serve for ventilation. In the embodiment shown, several arched openings 8.1 are arranged in the region of the backrest 2, such that several tabs pointing downwards in the vertical direction Z are created in the seat shell 7, with a tab upper in the vertical direction Z extending into the region of a tab located below it in the vertical direction Z. Furthermore, several arched openings 8.2 are arranged in the region of the seat part 3, such that several tabs pointing towards the backrest 2 are created in the seat shell 7, with a tab closer to a front seat edge 9 extending into the region of a tab closer to the backrest 2.

[0044] Furthermore, an opening 8.3, 8.4 is provided centrally at the front seat edge 9 and centrally at an upper seat end 10 within the area of ​​the frame 6.

[0045] In addition, a heating device can be arranged on the seat shell 7 and / or integrated therein.

[0046] At least one reinforcing element 11, in particular a central reinforcing element 11, is attached to the front seat edge 9 and to the upper seat end 10 on the frame 6. The reinforcing element 11 is, for example, a belt, band, or net.

[0047] For better clarity, the invention will be described below using a reinforcing element 11 designed as a belt and referred to as belt 11. The following description applies analogously to a band or net as a reinforcing element 11.

[0048] The belt 11 extends between the front seat edge 9 and the upper seat end 10 with at least a first section 11.1 on a front side 7.1 of the seat shell 7 (shown in Figure 2 ) and with at least a second section 11.2 on a rear side 7.2 of the seat shell 7 (shown in Figure 3).

[0049] The belt 11 is guided through the openings 8.1, 8.2, 8.3, 8.4, so that the belt 11 alternates between the front side 7.1 and the back side 7.2 of the seat shell 7. The belt 11 can run predominantly on the back side 7.2 of the seat shell 7, particularly in the area of ​​concave curves as viewed from the front side 7.1 of the seat shell 7. This provides soft and robust support for the shape of the seat shell 7 and a person sitting therein.

[0050] The belt 11 can be designed in different colors, in particular in a color that differs from a color of the seat shell 7.

[0051] The belt 11 is designed in particular as a tensioning element or support element, which is fastened, for example, at one end to the rear side 7.2 of the front seat edge 9 of the seat shell 7 and at the other end to the rear side 7.2 of the upper seat end 10 of the seat shell 7 and supports, in particular regulates, a movement in the longitudinal extent of the seat shell 7. In particular, the belt 11 is tensioned as a tensioning element between the front seat edge 9 and the upper seat end 10. The belt 11 is designed, for example, as an elastomer band, a flexible support band, a spring element and / or a damping element. The belt 11 is incorporated, threaded or integrated into the seat shell 7 in particular as a longitudinal band.

[0052] In addition, a viscoelastic damper (not shown) can be provided, for example on the back 7.2 of the seat shell 7. An airbag module 12 can be arranged on the frame 6, for example on the side of the backrest 2, in particular in the lumbar region.

[0053] The frame 6 can also be adapted to the contours of the body of a seated person and thus be ergonomically designed. The frame 6 can be designed in different colors, in particular in a color that differs from the color of the seat shell 7.

[0054] Figure 4is a schematic view of the frame 6 without the seat shell 7. The frame 6 is fastened in the region of the seat part 3 on each side to a support 16, which is oriented at least largely vertically. Each support 16 is fastened to a first rail element 41, which is or can be in engagement with a second rail element 42, which is fastened to a vehicle. The frame 6, the supports 16 and the first rail element 41 and / or the second rail element 42 are formed in particular from metal, for example steel.

[0055] Figure 5 is a schematic exploded view of the frame 6, the supports 16 and the first rail elements 41. The frame 6 is, for example, a tubular frame.

[0056] The frame 6 can, for example, have a bent first tube 17 in the area of ​​the backrest 2 and the seat part 3, in particular with an outer diameter of 32 mm and a wall thickness of 1.5 mm. In the headrest area 13, adjoining the area of ​​the backrest 2 at the top, the frame 6 can have a bent second tube 18, in particular with an outer diameter of 25 mm and a wall thickness of 1.5 mm, which can be inserted into the first tube 17 and connected thereto in a detachable or non-detachable manner. The tubes 17, 18 can have fastening means, for example bolts, pins, threaded bolts and / or threaded holes, for example for fastening the airbag module 12, the belt 11 and / or the seat shell 7.

[0057] The first tube 17 can, for example, have a mass of approximately 2.6 kg. The second tube 18 can, for example, have a mass of approximately 0.9 kg. The supports 16 can, for example, have a mass of 2.4 kg. The first rail elements 41 and / or the second rail elements 42 can, for example, have a mass of 3 kg.

[0058] Figure 6 is a schematic view of an alternative embodiment of the vehicle seat 1. In this case, instead of a continuous seat shell 7, the backrest 2, the seat part 3, and the headrest area 13 are formed as offset sections of a seat shell 7, which can nevertheless be connected to one another by connecting sections 15. The connecting sections 15 can, however, be set back so that they do not come into contact with a person sitting on the vehicle seat 1. Figure 6The vehicle seat 1 shown also shows openings 8 in the seat shell 7 which have an alternative shape.

[0059] Figure 7 is a schematic view of an alternative embodiment of the continuous seat shell 7. In the embodiment shown, several openings 8.1 are arranged in the area of ​​the backrest 2 in the form of largely straight or only slightly downwardly curved, parallel strips. Openings 8.2 can be arranged in the same way in the area of ​​the seat part 3.

[0060] Furthermore, one opening 8.3, 8.4 is provided centrally at the front seat edge 9 and one centrally at an upper seat end 10 within the area of ​​the frame 6. Furthermore, central openings 8.5 for the passage of the belt 11 can be arranged in the backrest 2 and in the seat part 3. The belt 11 can, for example, only be guided alternately through the openings 8.3, 8.4 and through the central openings 8.5, but not through the openings 8.1 and 8.2.

[0061] The area of ​​the seat shell 7 can, for example, be approximately 0.64 m 2 as net seating area toward the front and approximately 0.8 m 2 gross including the partial wraps of the frame 6. With a surface weight of 900 g / m 2 , this would result in a mass of the seat shell 7 of 610 g. With a surface weight of 1800 g / m 2 , this would result in a mass of the seat shell 7 of 1220 g.

[0062] Figure 8is a schematic detailed view of the frame 6 with the airbag module 12 attached to it.

[0063] Figure 9 is an exploded view of the airbag module 12.

[0064] The airbag module 12 comprises a bracket 19, an igniter 20, which is attached to the bracket 19, for example, by means of threaded bolts 21 on the igniter 20 and nuts 22, an airbag 23, and an airbag cover 24. The airbag cover 24 can be made of a thermally bonded nonwoven fabric, in particular the same material as the seat shell 7. The airbag module 12 is thus robust and securely protected. An electrical cable 25 is provided for electrically contacting the igniter 20. The bracket 19 can be attached to threaded bolts 26 of the frame 6 by means of additional nuts 27, which are covered with cover caps 28.

[0065] Figure 10is a schematic detailed view of the frame 6 with the strap 11 at the upper seat end 10. The strap 11 partially or completely wraps around the frame 6 at the upper seat end 10 and has, for example, an opening into which a pin 29 of the frame 6 engages. The pin 29 is provided with a threaded bore into which a screw 30 or a bolt, in particular a wing screw or a star grip screw, can be screwed in order to secure the end of the strap 11 to the frame 6.

[0066] Figure 11is a schematic detailed view of the frame 6 with the belt 11 at the front seat edge 9. The belt 11 partially or completely wraps around the frame 6 at the front seat edge 9 and has, for example, an opening into which a pin 29 of the frame 6 engages. The pin 29 is provided with a threaded bore into which a screw 30 or a bolt, in particular a wing screw or a star grip screw, can be screwed in order to secure the end of the belt 11 to the frame 6. One end of the belt 11 can be designed as a hanging tab 31, which can be provided with a warning symbol 32 or information.

[0067] For example, the seat shell 7 can be placed on the frame 6 and secured against lateral slippage by partially wrapping the frame 6. The seat shell 7 can be fastened to the frame 6 by at least one belt 11. The thermally bonded nonwoven fabric can, for example, contain approximately 70% recycled polyethylene and is very lightweight. The disassembly and recycling of the vehicle seat 1 is facilitated by the illustrated design of the vehicle seat 1. In particular, no polyurethane is used. Furthermore, no gluing or overmolding is required during production. List of reference symbols

[0068] 1Vehicle seat 2Backrest 3Seat section 4Longitudinal adjustment device 41First rail element 42Second rail element 5Fitting 6Frame 7Seat shell 7.1Front of the seat shell 7.2Rear of the seat shell 8, 8.1 to 8.5Opening 9Front edge of the seat 10Upper end of the seat 11Reinforcing element (belt) 11.1First section 11.2Second section 12Airbag module 13Headrest area 14Cheek 15Connecting section 16Support 17First tube 18Second tube 19Bracket 20Igniter 21Threaded bolt 22Nut 23Airbag 24Airbag cover 25Cable 26Threaded bolt 27Nut 28Cover cap 29Pin 30Screw 31Tab 32Warning symbol XLongitudinal direction YTransverse direction ZVertical direction

Claims

1. Vehicle seat (1) comprising at least one frame (6) which forms an external contour of the vehicle seat (1), wherein a seat shell (7) is disposed on the frame (6) on a front side of the vehicle seat (1); wherein the seat shell (7) is formed from a thermally bonded non-woven fabric; wherein at least one reinforcing element (11) is fastened to a front seat edge (9) and to an upper seat end (10) on the frame (6), and wherein the reinforcing element (11) extends by way of at least one portion (11.1) between the front seat edge (9) and the upper seat end (10) on a front side (7.1) of the seat shell (7), and by way of at least one further portion (11.2) on a rear side (7.2) of the seat shell (7).

2. Vehicle seat (1) according to Claim 1, wherein the thermally bonded non-woven fabric has an area weight of 900 g / m2 to 1800 g / m2, in particular of more than 1100 g / m2.

3. Vehicle seat (1) according to Claim 1 or 2, wherein the thermally bonded non-woven fabric comprises recycled polyethylene at a proportion of 70% to 100%.

4. Vehicle seat (1) according to one of the preceding claims, wherein the frame (6) forms an external contour of a backrest (2) as well as of a seat part (3) of the vehicle seat (1), and optionally of a headrest region (13).

5. Vehicle seat (1) according to one of the preceding claims, wherein the seat shell (7) forms continuously a seat part (3), a backrest (2) and a headrest region (13) of the vehicle seat (1).

6. Vehicle seat (1) according to one of the preceding claims, wherein the seat shell (7) at least partially wraps the frame (5), and / or has bolsters (14) on the sides of the seat part (3) and / or on a front seat edge (9).

7. Vehicle seat (1) according to one of the preceding claims, wherein the seat shell (7) has one or a plurality of cut-outs (8.1, 8.2, 8.3, 8.4).

8. Vehicle seat (1) according to Claim 7, wherein the reinforcing element (11) leads through at least part of the cut-outs (8.1, 8.2, 8.3, 8.4) in such a way that the reinforcing element (11) lies alternately on the front side (7.1) and on the rear side (7.2) of the seat shell (7).

9. Vehicle seat (1) according to one of the preceding claims, wherein the frame (6) in the region of a backrest (2) and of a seat part (3) has a bent first tube (17), wherein the frame (6) in a headrest region (13), so as to adjoin the region of the backrest (2) at the top, has a bent second tube (18) which is inserted into the first tube (17) and thus releasably or non-releasably connected.

10. Vehicle seat (1) according to one of the preceding claims, wherein the seat shell (7) forms a backrest (2), a seat part (3) and a headrest region (13) of the vehicle seat (1) as portions which are offset from one another and connected by connecting portions (15).