DE102018207936A1 - Vehicle seat with a rear wall element and a hinge formed by a cover layer and manufacturing method - Google Patents

Abstract

In particular, the proposed solution relates to a vehicle seat (F) having a backrest (R) which has a flat rear wall element (1) with a cover layer (12) for forming a rear side (1A) of the backrest (R). 1A) of the backrest (R) facing away from the rear wall element (1), a hinge point (103) for a hinge (120) is defined, via which at least a portion (12b) of the cover layer (12) provided on the rear wall element (1) ) is foldable and which is formed by a portion (12 a) of the cover layer (12).

Description

The proposed solution relates to a vehicle seat with a backrest, which has a flat rear wall element, and a method for producing a backrest.

In practice in practice seat backs for vehicle seats, especially in vehicle seats for a rear, e.g. Second or third row of seats of a vehicle, typically a flat rear wall element of a thin-walled steel sheet is welded to a back frame. Subsequently, a carpet is glued as a cover layer on the visible and thus a backrest pad side facing away from the rear wall element to cover any stampings, holes or deformations on the rear wall element and, in the event that the backrest is folded forward in a loading position, a flat cargo area to provide at the back of the backrest. The hitherto conventional construction of a vehicle seat with such a flat rear wall element, however, leads to a comparatively high weight and is also expensive to manufacture in individual cases. Also, additional functions are difficult to integrate into the steel sheet of the rear wall element or the top layer, in particular not affected without the assembly process for the production of the backrest considerably.

Thus, there is a need for an improved vehicle seat in this regard, as well as an improved method for making a seat back for a vehicle seat in this regard.

It is proposed against this background, a vehicle seat with a backrest, which has a flat rear wall element with at least one cover layer for a back of the backrest, wherein on one of the back of the backrest facing away from the inside of the rear wall element, a hinge point for a hinge, in particular a film hinge is defined , via which at least a portion of the cover layer provided on the rear wall element can be folded and which is formed by a section of the cover layer.

Thus, the rear wall element itself can be fully hinged and / or at least one cover layer provided on this rear wall element can be hinged on the rear side of the backrest. By way of example, a cover for a gap or for a storage compartment can be realized via the foldable rear wall element and / or the at least one foldable cover layer. The foldable section of the cover layer can in particular be a section of the cover layer visible on the back of the backrest or a section of the (first) cover layer which at least partially overlaps by a further (second) cover layer.

In one possible development, the hinge is formed by a (hinge) section of the cover layer, which surrounds an edge section of at least one structural layer of the flat rear wall element. The cover layer provided for this purpose is then sufficiently flexurally elastic and / or correspondingly thin-walled, for example at least in the region of this section, in order to predetermine a film hinge and thus a defined folding axis via the (hinge) section. On the edge-side encasement of the rigid or possibly flexible and / or designed with a carpet-like surface cover layer can in particular in a simple manner a hinge ( a ) for the rear wall element or ( b ) If appropriate, only the cover layer or a plurality of cover layers may be formed.

The edge section encompassing (hinge) portion of the cover layer can hereby be fixed to one of the back of the backrest facing away from the inside of the rear wall element and / or on a back frame of the backrest to which the flat rear wall element is fixed. If a hinge for the entire rear wall element is formed over the edge encompassing portion of the cover layer, for example, provided on an inner side of the rear wall portion of the encompassing portion of the cover layer (in addition) on a back frame of the backrest and / or an additional stiffening and provided on the back frame Fixed additional rear wall element. In the event that only at least one cover layer should be able to be folded relative to the rear wall element via the hinge, on the other hand, the fixing of the hinge-forming section of the cover layer on the rear wall element is sufficient.

In one possible development, in which the hinge is formed by a (hinge) section of the cover layer, this section of the cover layer surrounds, for example, an edge section of one of at least two different and sandwich-connected structural layers of the rear wall element.

A (hinge) section of the cover layer is provided in an embodiment in the region of a local reduction of a wall thickness of the rear wall element, in particular formed by such a local reduction of the wall thickness. This includes in particular embodiments in which the hinge (with) forming portion of the cover layer does not surround an edge portion at least one structural position of the flat rear wall element.

The hinge point, which is defined on the rear wall element, may be formed, for example, by a stamping or punching on the rear wall element. If the rear wall element has a honeycomb structure, this honeycomb structure can be embossed and / or interrupted to form the hinge point. In this case, interrupting the honeycomb structure includes in particular the provision of an unstructured planar section or recess (through a material of the rear wall element forming the honeycomb structure).

The bending stiffness of the hinge-forming portion of the cover layer can be selectively reduced locally by perforations. Alternatively or additionally, a wall thickness of the cover layer can be reduced locally to define a hinge axis of the hinge. About such a local reduction of the wall thickness can - as well as one or more perforations - a bending point and thus the hinge axis can be specified. In addition, not only the bending stiffness but also the bending radius can be influenced hereby - as well as via one or more perforations.

In principle, at least two different cover layers can be provided on an outer surface of the rear wall element. The different cover layers may overlap each other at least partially or over the entire surface. The use of two different cover layers can serve, for example, the formation of different surfaces on the visible back of the backrest and / or the formation of different functional layers for the back of the backrest. For example, a first water-repellent layer is provided from a first cover layer, and in turn a second, laminating (decorative) layer, for example with a carpet-like surface, which is formed by a second cover layer. The first cover layer is at least partially disposed between a core of the rear wall element and the second cover layer. For example, the material forming the rear wall element can form a (sandwich) core with at least two structural layers connected to one another in sandwich construction, to which a multilayer cover layer composite is attached on the back side. Of course, at least two cover layers of a cover layer composite can also be connected to one another in sandwich construction.

In one embodiment variant, at least the foldable portion of the cover layer provided on the rear wall element is held in a first position on the backrest by means of at least one magnet, from which at least the cover layer over the hinge (about a hinge axis defined therewith) into a second, folded-down position can be worked. Thus, a closure with at least one magnet can be provided in order to hold at least the cover layer in the (first) position, from which at least the cover layer can be folded into a further (second) position. The topsheet, e.g. can form a visible and / or carpet-like surface on the rear side of the backrest for a loading floor when the backrest is folded down, it is thus possible, e.g. secured in a closed, at least partially overlying position on the rear outer surface of the rear wall element via the at least one magnet and are folded down after releasing the corresponding magnetic closure relative to the outer surface, e.g. to make a gap or a storage compartment accessible.

In one embodiment variant, the planar rear wall element is produced from a material having at least two different and sandwiched structure layers. The rear wall element made of such a (sandwich) material allows in particular a lightweight construction, as can not be achieved in a hitherto conventional use of a thin-walled steel sheet for a rear wall element. In addition, the back wall element is readily adaptable to different space conditions and design requirements by the sandwich layers interconnected structural layers. Thus, for example, the necessary structural geometry for functional components of the backrest can be formed on at least one first structural layer on one side, for example cable ducts, clips or stampings. By means of a second, second structural layer facing the back of the backrest and optionally visible thereon, a flat and possibly laminating surface can be provided. The second structural layer may e.g. facilitate the attachment of the at least one cover layer at least over a planar design. By means of the at least two structural layers of the rear wall element, which in sandwich construction form the rear wall element and are thus stacked in a mold in order to form the rear wall element with the desired contour, different functions can thus be integrated into the rear wall element, which is then constructed in multiple layers. It is not mandatory that the different structural layers consist of different materials. Although this can be provided, but the different structural layers can in principle also consist of identical materials.

In one exemplary embodiment, for example, provision is made for a first structural layer of the material in the rear wall element to form an inner side of the rear wall element. Such an inner side faces a backrest cushion serving to support a seat occupant. In this case, the first structural layer can then form a planar inner side of the rear wall element with at least one structural element projecting or recessed relative to a reference plane. Such a structural element includes, for example, a clip, a fastening profile, in particular a welt profile, a honeycomb structure, a stamping or a channel. Such a structural element formed by the first structural layer then serves, for example, for fastening and / or guiding functional components of the vehicle seat arranged on or in the backrest and / or the connection with further elements of the backrest, such as, for example, a backrest frame. As a result of a multilayer construction of the rear wall element, such a structural element projecting or recessed on the inside is not necessarily connected to a corresponding mating contour on the side of the rear wall element facing the rear side of the backrest. Here can be formed by a second structural layer readily a flat surface.

For example, it is provided in a variant embodiment that a second structural layer of the material in the rear wall element at least partially forms a visible rear side of the backrest and at least one cover layer is provided on the second structural layer for the formation of at least one (further) part of a visible rear side of the backrest. The second structural layer and / or the cover layer provided thereon thus form part of the visible rear side of the backrest. The second structural layer and / or the cover layer provided thereon may in this case form, for example, the carpet-like surface typical for a loading floor, on which objects can be arranged when the backrest of the vehicle seat has been folded forwards into a loading compartment position.

The second structural layer of the rear wall element may, for example, form a flat outer surface which faces away from an inner side of the rear wall element facing a backrest cushion of the backrest. The flat outer surface then forms, for example, a part of the rear side of the backrest and / or the at least one cover layer is provided on this flat outer surface so that the outer surface of the second structural layer is at least partially covered by the at least one cover layer.

By providing the at least one cover layer, a visible rear side of the backrest is at most partially formed by a (second) structural layer of the sandwich material of the rear wall element. By at least two-layer sandwich construction of the rear wall element but the attachment of the at least one cover layer can be facilitated. Since any structural elements and thus, for example, embossments, channels or deformations on an inner side of the rear wall element are already laminated by the at least one second structural layer of the rear wall element, the at least one cover layer can be made thin-walled and, in particular, thinner than usual in practice.

In one embodiment variant, an indentation with at least one slot is formed on an outer surface of the rear wall element facing away from an inner side of the rear wall element facing a backrest cushion of the backrest, through which an anchoring element protrudes into the recess. In this case, an anchoring element is understood to mean, in particular, an element which defines an attachment point on the rear side of the backrest. Included hereof is thus an attachment point for a child seat attachment, e.g. for an Isofix strap, on the back of the backrest. For example, an anchoring element thus provides a possibility for (additional) intended attachment or anchoring of a child seat and forms an anchoring point called a "top tether" for a child seat on the rear side of the backrest. In previously customary backrests such anchoring elements are concealed on a separate panel, which subsequently installed as an additional component to a rear wall element, for example, clipped, must be. By having a recess with slot e.g. is formed in the rear wall element formed from a sandwich material, a corresponding aperture is not necessary. An aperture for the anchoring element is here rather integrated into the rear wall element.

In this context, it can also be provided, for example, that inner walls of the recess facing the anchoring element are formed by at least one structural layer of the rear wall element so that at least one structural layer forming the walls forms a screen for the anchoring element on the back side of the backrest.

The recess formed in the slot, through which the anchoring element protrudes, for example, be made by punching. The anchoring element may comprise, for example, an anchoring bracket or an anchoring eye.

As already mentioned above, at least one cover layer may be provided on an outer surface of the rear wall element, which at least partially forms a visible rear side of the backrest. In one embodiment, it may additionally be provided that in the Rear wall element is formed a recess which is covered by the at least one cover layer. Thus, for example, holes in the rear wall element can be veneered over the at least one cover layer. Here, for example, from one side the sandwich layers interconnected structural layers of the rear wall element are pressed to a minimum and on a visible side of the rear wall element resulting recesses with a cover layer, in particular with a cover layer with carpet-like surface and / or a decorative layer covered. An additional panel or cover, as heretofore used in practice to cover a recess in a thin-walled steel sheet of a back panel member, is not necessary.

In principle, at least one of the structural layers of the rear wall element may comprise a fiber composite material. For example, one of the structural layers may comprise a plastic, in particular a glass fiber reinforced plastic, and / or a nonwoven, in particular a glass fiber reinforced nonwoven. In one embodiment, one of the structural layers is a glass fiber reinforced plastic nonwoven, e.g. formed by a glass fiber reinforced polypropylene nonwoven. Alternatively or additionally, one of the structural layers may be formed with a honeycomb structure made of paper or cardboard. In one embodiment, a structural layer of paper or paperboard provided with a honeycomb structure is sandwiched between two structural layers of a plastic non-woven, e.g. made of a polypropylene fleece, arranged. The rear wall element is thus produced here by a material which comprises in sandwich construction two glass fiber reinforced plastic nonwovens with an intermediate structural layer of paper or paperboard. On one of the back of the backrest facing structure layer of fiberglass reinforced plastic non-woven may optionally be attached at least one additional cover layer, which forms at least partially a visible back of the backrest with its one surface.

In one embodiment, at least one insert is integrated in a material of the rear wall element that has at least two structural layers. Such an insert formed by a separate component and then embedded, for example, in the sandwich material forms, for example, a clip or a fastening profile, in particular a welt profile, on the rear wall element in order to integrate additional functions into the rear wall element.

In one embodiment variant, the rear wall element forms a honeycomb structure. This not only implies that the back panel member has an internal honeycombed structural layer disposed, for example, between two further structural layers and / or formed from paper or paperboard. Rather, this is in particular included in that a first structural layer defining an inner side of the rear wall element forms the honeycomb structure and this honeycomb structure is visible on the inner side of the rear wall element.

Basically, the backrest from a use position in which a back of a seat occupant is supported by the backrest to be pivotable in a load compartment position in which a back of the backrest defines a cargo area on which objects are stored. By folding down the backrest, an enlarged loading floor is thus provided in a vehicle, for example, in which the vehicle seat is mounted as intended.

Another aspect of the proposed solution relates to a method for producing a backrest of a vehicle seat, in which a flat rear wall element is mounted on a back frame of the backrest. In this case, it is provided that a hinge point for a hinge is defined on an inner side of the rear wall element facing away from the back of the backrest, over which at least a portion of the cover layer provided on the rear wall element is hinged, and the hinge is formed by a portion of the cover layer

In the context of a variant of a proposed manufacturing method, in particular, a backrest of a variant of a proposed vehicle seat can thus be produced. Above and below for embodiments of a proposed vehicle seat specified advantages and features thus also apply to variants of a proposed manufacturing process and vice versa.

In a variant embodiment, the rear wall element can accordingly be e.g. made of a material having at least two structural layers interconnected in sandwich construction, and / or in the rear wall element, a honeycomb structure is formed, which is embossed and / or interrupted to form the hinge point.

The rear wall element can be fixed for example by gluing and / or by means of at least one friction connector, in particular a plastic floating connector to the back frame. Bonding of the rear wall element to the backrest frame of the backrest as well as the use of friction connectors allows comparatively fast cycle times in industrial production. Incidentally, both offer the above Fixation methods over fixation with screws and / or bolts.

The attached figures illustrate by way of example possible embodiments of the proposed solution.

• 1 ausschnittsweise mit Blick auf eine Innenseite eine Ausführungsvariante eines in Sandwichbauweise hergestellten flächigen Rückwandelements;
• 2 eine weitere Ausführungsvariante eines in Sandwichbauweise hergestellten flächigen Rückwandelements in perspektivischer Ansicht mit einer zusätzlich hieran angebrachten Decklage, die mit einem randseitig umgreifenden Abschnitt ein Filmscharnier ausgebildet;
• 2A vergrößerter Ausschnitt der 2 mit Blick auf das Filmscharnier;
• 3 in perspektivischer Ansicht einen Fahrzeugsitz mit schwenkbarer Rückenlehne, an der ein flächiges Rückwandelement gemäß den 1 und 2 vorgesehen werden kann;
• 4 und 4A in unterschiedlichen Ansichten ein aus dem Stand der Technik bekanntes Rückwandelement, das durch ein dünnwandiges Stahlblech mit einem kaschierendem, vergleichsweise dickwandigen Teppich an einer Rückseite überdeckt ist;
• 5 eine Flussdiagramm zu einer Ausführungsvariante eines vorgeschlagenen Herstellungsverfahrens;
• 6 ausschnittsweise und in Seitenansicht eine Ausführungsvariante eines Fahrzeugsitzes mit abgeklapptem Abschnitt eines Rückwandelements;
• 6A vergrößerten Ausschnitt des Fahrzeugsitzes der 6.

Hereby show:

• 1 partial view with an inside view of an embodiment of a sandwich-type produced flat rear wall element;
• 2 a further embodiment variant of a flat rear wall element produced in sandwich construction in a perspective view with an additionally attached thereto top layer, which formed with a peripheral portion embracing a film hinge;
• 2A enlarged section of the 2 with a view to the film hinge;
• 3 in a perspective view of a vehicle seat with a swivel backrest on which a flat rear wall element according to the 1 and 2 can be provided;
• 4 and 4A in different views a known from the prior art rear wall element, which is covered by a thin-walled steel sheet with a laminating, relatively thick-walled carpet on a back;
• 5 a flowchart of an embodiment of a proposed manufacturing method;
• 6 a detail and in side view of an embodiment of a vehicle seat with folded-down portion of a rear wall element;
• 6A enlarged section of the vehicle seat the 6 ,

The 3 shows a vehicle seat F that goes along a longitudinal direction L via a rail arrangement SA longitudinally movable seat base G and one on the seat base G around a pivot axis A swiveling backrest R includes. The seat base G has two opposite side parts S1 and S2 on. At these side parts S1 and S2 is over several pivoting levers H1 . H2 . H3 a seat pan W arranged displaceably. Above one of the two side panels S1 and S2 in a rear area of the vehicle seat F interconnecting cross tube Q is the backrest R intended. Around the pivot axis A can the backrest R in their inclination with respect to the seat pan W be adjustable. Furthermore, the backrest R , for example, also about the pivot axis A or about an axis parallel thereto, on the seat pan W be foldable in a cargo space. In the load compartment position can be over a back of the backrest R an additional loading area are provided in a vehicle, in which the vehicle seat F is mounted as part of a second or third row of seats.

The backrest R has a backrest frame LR on. Such a backrest frame LR is formed, for example, two opposite, longitudinally extending (left and right) spars and two the two spars each interconnecting (upper and lower) cross beams. On the backrest frame LR At least one flat rear wall element is fixed.

In a known from the prior art vehicle seat, such a rear wall element, for example, according to the 4 and 4A as a back wall element 1' with a steel sheet 10 ' educated. At this comparatively thin-walled, but heavy steel sheet 10 ' are structural elements in the form of stampings 101 and holes 104 formed. These stampings 101 and the holes 104 serve for example on a backrest cushion facing inside 1B of the rear wall element 1' the definition and / or management of functional components within the backrest R , To the stampings 101 and holes 104 on a visible side of the steel sheet 10 ' to cover, is a comparatively thick-walled cover layer 12 ' provided in the form of a carpet. This rug 12 ' partially defines a visible back 1A the backrest R ,

The production of the known from the prior art rear wall element 1' according to the 4 and 4A is relatively expensive. Incidentally, in particular, the steel sheet 12 ' comparatively heavy and the carpet 12 ' may in particular due to its necessary thickness for laminating the stampings 101 and holes 104 on the visible side not at or over a border section 1C of the rear wall element 1 , extend over which a fixation of the rear wall element 1' on the backrest frame LR the backrest R he follows.

In contrast to this is a back wall element 1 according to the 1 in sandwich construction by at least two structural layers 10 and 11 educated. The flat rear wall element 1 of the 1 is therefore one of two structural layers 10 and 11 molded material formed. This defines a first structural position 10 the backrest cushion facing inside 1B , On this inside 1B are about the first structural situation 10 Error Coins 101 and channels 102 formed as structural elements, as well as any holes. A sandwich construction with this first structural layer 10 connected second structural layer 11 conceals the visible side of the rear wall element 1 and thus defines a flat outer surface on which at least one thin-walled cover layer 12 (see. 2 and 2A) can be easily attached.

About the production of the rear wall element 1 from a sandwich material or in sandwich construction with two different functions fulfilling structural layers 10 and 11 Already at the molding and thus the shape of the rear wall element 1 on the inside necessary projecting and / or recessed structural elements 101 . 102 be formed. The two structural layers 10 and 11 extend in particular also together on a superscript (opposite the inside 1B substantially perpendicularly extending) edge portion 1C of the rear wall element 1 , About the adhesive by means of gluing and / or friction a fixation on the back frame LR he follows.

Basically, a structural position 10 or 11 in the 1 illustrated rear wall element 1 consist of a fiber composite material, for example of a glass fiber reinforced thermoplastic material and in particular of a glass fiber reinforced plastic nonwoven, such as a polypropylene nonwoven. In principle, more than two structural layers can also be used 10 . 11 be provided. For example, a development sees a rear wall element 1 before, which is formed in sandwich construction with two (first and second) structural layers of a glass fiber reinforced plastic fleece and intervening, formed with a honeycomb structure (third) structural layer of paper or paperboard.

In the embodiment of the 2 and 2A is a flat rear wall element 1 on the backrest frame LR the backrest R of the 3 is to be fixed, with a sandwich-made and at least two structural layers 10 and 11 formed core, although this is not mandatory for the presently proposed solution. At this core 10 . 11 is on the back 1A the backrest R facing side a (additional) thin-walled cover layer 12 , for example, with a carpet-like surface, attached.

The top layer 10 forms at the rear wall element 1 of the 2 and 2A at least part of a back 1A the backrest R off and around on both sides (left and right in the 2 ) with two sections of opposing areas of the peripheral edge portion 1C , It forms a first, in the 2 right-hand encompassing (hinge) section 12a the top layer 12 a hinge 120 out. About the hinge 120 can that be on the backrest frame LR attached rear wall element 1 with the top layer 12 (relative to the backrest frame LR ) or just one on the back 1A the backrest R visible section 12b the top layer 12 (relative to the backrest frame LR and the core 10 . 11 of the rear wall element 1 ) be foldable. So is the encompassing hinge section 12a the top layer 12 - At least locally - sufficiently flexible or flexurally elastic to at an edge of the embraced edge portion 1C to define a hinge axis. The bending stiffness of the edge section 1C encompassing hinge section 12a can through perforations 120a be reduced.

In order in the illustrated embodiment of 2 and 2A for example, the top layer 12 relative to the sandwiched core 10 . 11 of the rear wall element 1 to make hinged is at one to the hinge 120 spaced area of the edge portion 1C a folding edge 121 through the top layer 12 formed, which is detachable to the core 10 . 11 of the rear wall element 1 is held. With this folding edge 121 grasps the top layer 12 the edge of the core 10 . 11 of the rear wall element 1 opposite to the hinge 120 , About one or more in the folding edge 121 integrated or arranged thereon magnets 13 can the top layer 12 releasably held in the illustrated position, in the cover layer 12 with the folding section 12b on an outer surface of the core 10 . 11 of the rear wall element 1 rests. This is where the magnets work 13 with a metallic counterpart on the rear wall element 1 or - in the assembled state of the backrest R - the backrest frame LR together. The folding edge 121 can then manually against the applied magnetic force of the rear wall element 1 and / or the backrest frame LR solved and thus the top layer 12 around the hinge 120 provided hinge axis can be folded.

Notwithstanding the in 2 selected representation may be provided in a variant that the folding edge 121 not 180 ° around the edge section 1C extends (as well as the hinge section 12a the cover suit 12 for the formation of the hinge 120 is provided). That's how the folding edge can be 121 alternatively only partially and eg in cross section L -shaped around the edge section 1C extend. A tab or web-shaped section of the folding edge 121 can by a user already in the region of a lateral edge of the rear wall element 1 be taken. The folding edge 121 must therefore not on the backrest cushion facing and thus from the back of the backrest R hard to reach inside 1B of the rear wall element 1 be taken and solved.

In the in the 2 illustrated configuration, the flat folding section 12b the top layer 12 already before the assembly of the rear wall element 1 on the backrest frame LR relative to the sandwich-made core 10 . 11 of the rear wall element 1 be foldable. About the hinge 120 but can also in an alternative embodiment after proper installation of the rear wall element 1 (with the top layer 12 ) on the backrest frame LR a hinge axis defined to be the rear wall element 1 together with the top layer 12 on the backrest frame LR is foldable. Here then is not (only) a fixation of one on the inside 1B present area of the encompassing hinge section 12b the top layer 12 at the core 10 . 11 of the rear wall element 1 intended. Rather, an (additional) fixation of this area on the back frame LR provided so that part of the hinge section 12a directly on the backrest frame LR set, relative to the rear wall element 1 can be foldable.

About using the at least one hinge 120 partially foldable cover layer 12 or this together with the top layer 12 hinged rear wall element 1 For example, an integrated gap cover, a cover for storage compartments and / or a cover for a gap to a roller blind box on the back 1A the backrest R be implementable. The respective cover can in this case by folding over the hinge 120 provided hinge axis are removed manually. About the (film) hinge 120 is there after proper installation of the vehicle seat F the top layer 12 or the rear wall element 1 with the top layer 12 relative to the backrest frame LR foldable between two positions, a first, closed position on the one hand and a second, open position on the other.

That in the 2 and 2A illustrated rear wall element 1 forms in the present case with the structural layers connected in sandwich construction 10 and 11 one on the inside 1B apparent honeycomb structure 100 out. For the definition of a hinge point 103 , at which the embracing of the hinge portion of the cover layer 12 is provided, this honeycomb structure 100 selectively embossed and / or interrupted. This will be off the original honeycomb structure 100 a defined, the honeycomb structure 100 interrupting thickness reduction made here to the hinge 120 using an encompassing section of the top layer 12 train.

In addition to the illustrated embodiments of the 1 and 2 to 2A can on the back wall element 1 about the structure layers 10 and 11 especially a slotted recess at the back 1A be formed, in which an anchoring element protrudes. About the anchoring element, for example in the form of an anchoring bracket or an anchoring lug, is a "Top Tether" called anchoring point for a child seat on the back 1A the backrest R provided. In this case, an additional veneering of the anchoring element is not necessary, since already the second, externally provided structure layer 11 , with which the depression is formed, forms a corresponding aperture.

In one embodiment of a proposed manufacturing method, for example, according to the flowchart of 5 first in one process step A1 the back wall element 1 formed with the multilayer sandwich material. Here, for example, according to the in the 1 illustrated embodiment, the rear wall element 1 with the multilayer, the structural layers 10 and 11 formed core having the structural position 11 forms a flat outer surface, the - in the intended mounted state of the vehicle seat F - the back 1A the backrest R is facing.

In a subsequent process step A2 be on the inside 1B of the rear wall element 1 intended embossings and punches provided and the one- or multi-layer cover layer 12 according to the in the 2 and 2A illustrated embodiment, forming the hinge 120 attached separately.

Following is in a process step A3 the thus prefabricated rear wall element 1 with laminating structure layer 11 or separately attached top layer 12 on the backrest frame LR the backrest R fixed, especially with non-folding core 10 . 11 by gluing and / or friction connectors.

Deviating from the representation in the 2A By the way, the hinge can 120 even without perforations 120a be educated. For example, the encompassing (hinge) section 12a the lawsuit 12 already be designed with sufficient flexibility. Alternatively or additionally, a wall thickness of the cover layer 12 in the area of the encompassing hinge section 12a be locally reduced, over which the hinge axis of the hinge 120 should be defined. Over such a local reduction of the wall thickness can - as well as over the perforation 120a - Given a bending point and thus the hinge axis. In addition, about this - as well as about the perforations 120a - not only the flexural rigidity, but also the bending radius are influenced.

The 6 shows a detail and in side view of an embodiment of a vehicle seat F with folded folding section 12b a rear wall element 1 , The folding section 12b is exemplary in a lower area of the backrest R provided and is as a cover, in particular as a cover between the body and the vehicle seat F , used. The hinge 120 here is about perforations 120a and / or a local reduction of the wall thickness of the flat rear wall element 1 formed, so that a flap on a hinge section 12a the top layer 12 is made possible by a hinge axis formed thereby.

Around the folding section 12b to hold in a closed position, in which the folding section 12b flush with the other sections of the rear wall element 1 completes and a flat back 1A the backrest R defined, a closure is provided. In the present case, this closure is exemplary with at least one magnet 13 educated.

The 6A shows an enlarged section of the vehicle seat F of the 6 in the hinge area 120 , Based on the enlarged view of 6A is particularly illustrated in more detail that the folding section 12b over the film hinge 120 can be folded over more than 60 ° from the closed position to an open position.

In deviation from or in addition to the embodiments shown in the figures, it can further be provided that at least one structural element in the form of a clip or a welt profile overlays at least one of the structural layers 10 . 11 on the rear wall element 1 is formed or provided via an insert, in which the structural layers 10 and 11 integrated sandwich material is integrated.

LIST OF REFERENCE NUMBERS

1, 1 '

Rear wall element

10

First structural position

10 '

sheet steel

100

honeycomb structure

101, 102

Embossing / channel (structural element)

103

hinge point

104

(Through) hole

11

Second structure situation

12, 12 '

topsheet

12a

(Hinge) section of the top layer

12b

(Folding) section of the cover layer

120

hinge

120a

perforations

121

folding edge

13

magnet

1A

back

1B

inside

1C

edge section

A

swivel axis

F

vehicle seat

G

Seat base

H1, H2, H3

pivoting lever

L

longitudinal direction

LR

back frame

Q

cross tube

R

backrest

S1, S2

side panel

SA

rail arrangement

W

Shower Curtains

Claims (18)

A vehicle seat having a backrest (R) which has a flat rear wall element (1) with at least one cover layer (12) for a rear side (1A) of the backrest (R), characterized in that on one of the rear sides (1A) of the backrest (FIG. 1) of the rear wall element (1), a hinge point (103) for a hinge (120) is defined, via which at least a portion (12b) of the cover layer (12) provided on the rear wall element (1) can be folded and the is formed by a section (12a) of the cover layer (12). Vehicle seat after Claim 1 , characterized in that the hinge (120) forming portion (12a) of the cover layer (12) surrounds an edge portion (1C) at least one structural layer (10, 11) of the rear wall element (1). Vehicle seat after Claim 2 , characterized in that the edge portion (1C) embracing portion (12a) of the cover layer (12) on one of the back (1A) of the backrest (R) facing away from inside (1B) of the rear wall element (1) and / or on a back frame ( LR) of the backrest (R) is fixed. Vehicle seat according to one of the preceding claims, characterized in that via the hinge (120) the rear wall element (1) with one on the back (1A) of the backrest (R) visible portion (12b) of the cover layer (12) is foldable. Vehicle seat according to one of the preceding claims, characterized in that on the hinge (120) forming portion (12a) of the cover layer (12) a perforation (120a) is provided. Vehicle seat according to one of the preceding claims, characterized in that the rear wall element (1) forms a honeycomb structure (100). Vehicle seat after Claim 6 , characterized in that the honeycomb structure (100) embossed and / or interrupted to form the hinge point (103). Vehicle seat according to one of the preceding claims, characterized in that several mutually at least partially overlapping cover layers (12) on the rear wall element (1) are provided. Vehicle seat according to one of the preceding claims, characterized in that a cover is formed on the vehicle seat (F) at least via a section of the cover layer (12) which is visible and foldable on the rear side (1A) of the backrest (R). Vehicle seat after Claim 9 , characterized in that the cover at least partially covers a gap or a storage compartment. Vehicle seat according to one of the preceding claims, characterized in that at least the hinged portion of the cover layer (12) provided on the rear wall element (1) is held in a first position on the backrest (R) by means of at least one magnet (13) at least the cover layer (12) can be folded over the hinge (120) into a second, folded-down position Vehicle seat according to one of the preceding claims, characterized in that the rear wall element (1) is made of a material having at least two different and in sandwich construction interconnected structural layers (10, 11). Vehicle seat after Claim 12 , characterized in that a first structural layer (10) of the material forms an inner side (1B) of the rear wall element (1) facing away from the rear side (1A) of the backrest (1B). Vehicle seat according to one of the preceding claims, characterized in that on the second structural layer (11), the cover layer (12) for the formation of at least a portion of a visible back (1A) of the backrest (R) is provided. Vehicle seat according to one of the preceding claims, characterized in that on one of the rear side (1A) of the backrest (R) facing outer surface of the rear wall element (1) at least two different cover layers (12) are provided. Vehicle seat according to one of the preceding claims, characterized in that the backrest (R) from a use position in which a back of a seat occupant is supported by the backrest (R) is pivotable into a loading position in which a back (1A) of the backrest (R) Defines a cargo area on which objects can be parked. Method for producing a backrest (R) of a vehicle seat (F), in which a planar rear wall element (1) is mounted on a backrest frame (LR) of the backrest (R), characterized in that on one of the rear sides (1A) of the backrest (FIG. R) facing away from the inside (1A) of the rear wall element (1) a hinge point (103) for a hinge (120) is defined, via which at least a portion (12b) of the rear wall element (1) provided cover layer (12) is hinged, and the hinge (120) is formed by a section (12a) of the cover layer (12). Method according to Claim 17 , characterized in that on the rear wall element (1) a honeycomb structure (100) is formed and the honeycomb structure (100) for forming the hinge point (103) embossed and / or interrupted.

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