Textile energy absorption element and inflatable textile component

Abstract

Textile energy absorption element (10) for a vehicle, in particular for a motor vehicle such as a motor vehicle with an internal combustion engine or an electric vehicle, with an inflatable and airtight inner bag (12) which is received in a textile fabric structure (14), wherein the textile fabric structure (14) has at least two at least partially multi-layered, preferably two-layered, fabric parts (141, 142) which are woven in one piece as OPW fabric parts (141, 142) and are connected to each other in a respective circumferential edge region (16) of the fabric parts (141, 142) in such a way that a chamber (8) is formed in which the inner bag (12) is received.

Description

The invention relates to a textile energy absorption element for a vehicle, in particular for a motor vehicle such as a motor vehicle with an internal combustion engine or an electric vehicle.The invention further relates to an inflatable textile component, preferably for such an aforementioned vehicle.Energy absorption elements in vehicles, frequently also called crash boxes or deformation elements, are components which convert the arising impact energy in a targeted manner into deformation work in the event of an impact and thus keep it away from the passenger compartment of the vehicle. Such energy absorption elements are part of the so-called crumple zone and are usually formed from metal profiles (e.g. from steel or aluminum profiles), which fold or compress in a controlled manner in the event of an accident. This contributes to reducing the load on the occupants of the vehicle in the event of an impact and thus to increasing the safety in the vehicle. Occupant safety is essentially aligned with frontal and side impacts with respect to the crush zones and the occupant restraint systems (seat belt and airbag). The rear impact for protecting the occupants in the vehicle front can still be optimized. The installation space for batteries of electric vehicles can be protected by energy absorption elements.In addition to increasing the safety in the vehicle, the weight reduction of the vehicle is a persistent and central trend in the automotive industry, among other things. This is, among other things, closely linked to increasingly strict emission and consumption regulations, the desire for higher efficiency and longer range, in particular in electric vehicles, and the increased demands of the customers on driving dynamics and safety.However, there is a certain conflict of goals between increased vehicle safety and the desired weight reduction.For example, instead of conventional steel, aluminum alloys, produced inter alia as die cast aluminum, are being used more and more frequently for body parts, structural components, engine blocks and chassis components, since aluminum is about one third lighter than steel and thus enables significant weight savings. The stability of the vehicle is not significantly impaired.In addition to aluminum alloys, fiber composites such as carbon fiber reinforced plastic (CFRP) or glass fiber reinforced plastic (GRP) are also used in the vehicle, which offer an advantageous ratio of strength to weight compared to conventional steel. For example, such fiber composites are used in conjunction with roof modules, engine hoods, passenger compartment areas, etc.In particular in connection with electric vehicles, the focus is even more on weight reduction, since the energy stores used, such as rechargeable batteries, are still relatively heavy, but the range to be achieved correlates strongly with the weight of the electric vehicle.As already mentioned, when weight reduction is carried out, as by a corresponding choice of material, the stability of the vehicle structural parts must always be taken into account. As already indicated, crumple zones are often formed by steel or aluminum profiles. However, the increase in stability through the use of steel or aluminum profiles has limitations with regard to the aim of further reducing the weight of the vehicle at the same time.Accordingly, the object of the invention is to provide an energy absorption element and a textile component, on the basis of which the safety or stability can be increased, and which can optionally lead to a simultaneous weight saving compared to conventionally used energy absorption elements such as aluminum profiles or steel profiles.This object is achieved by the subject matter of claims 1 and 9.Further advantageous embodiments and developments of the invention are evident from the dependent claims.The textile energy absorption element according to the invention is provided for a vehicle, in particular for a motor vehicle such as a motor vehicle with an internal combustion engine or an electric vehicle, and comprises an inflatable and air-impermeable inner bag which is accommodated in a textile fabric, wherein the textile fabric has at least two, at least partially multilayer, preferably two-ply, planar fabric parts which are woven in one piece as OPW planar fabric parts and are connected to one another in a respective circumferential edge region of the planar fabric parts in the state lying one on top of the other in such a way that a chamber is formed in which the inner bag is accommodated.According to the invention, the textile fabric serves as a reinforcing fabric or reinforcing fabric which can absorb multidirectional static loads in the textile surface; in particular when the textile fabric is bonded, in particular bonded, at least in regions or in sections to the textile inner bag. Because the textile fabric can be formed at least in regions in two or more layers, the latter can also be used for insulation or as insulating material. Thus, in addition to its reinforcing or reinforcing function, the textile fabric can also be used as insulation insulation material or thermal and noise-protection insulation material. Preferably, the fabric is fully woven as an OPW fabric in one piece in a single operation. The advantage results, among other things, due to the OPW technique used here, which is known from the production of airbags for occupant restraint systems in motor vehicles and which enables a very favorable production, combined with chambers of the planar fabric parts of the textile planar structure surrounded by universally arrangeable boundaries, which will be discussed in more detail below. As a result, multidirectional loads can be absorbed in the textile surface. The textile fabric according to the invention can be bonded to the inner bag or a wall of the inner bag with known adhesives without special preparation.The energy absorption element according to the invention can advantageously be further developed in such a way that the inner bag is an OPW inner bag woven in one piece and has a circumferential woven seam which is connected, preferably sewn, to the respective circumferential edge regions of the planar fabric parts lying therebetween.Furthermore, the energy absorption element according to the invention can be configured such that the two planar fabric parts in the state resting on one another and the inner bag accommodated in the chamber in the non-inflated state have an outer contour of the same shape. The two planar fabric parts and the inner bag are thus configured congruently.In addition, the energy absorption element according to the invention can be implemented in such a way that the circumferential woven seam of the surgical-surgical inner bag and the circumferential edge regions of the two planar woven fabric parts form a planar mounting flap on at least one common section. For example, the circumferential edge regions of the two planar woven fabric parts can be designed as single-layer woven seams and run in an elongated shape along the outer periphery of the two planar woven fabric parts, wherein the single-layer woven seams change their elongated shape to a planar tab shape, for example in the form of a rectangular tab, in order to form the mounting tabs. The same applies to the circumferential woven seam of the surgical-use inner bag. Thus, a woven seam width in the circumferential direction or circumferential direction of the woven seams of the two flat fabric parts and of the inner OPW bag is greater in the region of the mounting flaps than in the remaining woven seam regions.Furthermore, the energy absorption element according to the invention can be further developed in such a way that the inner bag is coated or laminated. The coating (frequently based on silicone, neoprene or polymeric) of the surgical insuffle can, for example, help the surgical insuffle meet gas tightness requirements. In the uncoated state of the OPW airbag, air tightness cannot be readily ensured. The coating prevents the gas from escaping. In addition, the coating also ensures a certain heat resistance and increases the mechanical load-bearing capacity of the surgical inner sack.Moreover, the energy absorption element according to the invention can be realized in such a way that the planar fabric parts are formed at least in sections in two layers with a multiaxial load-bearing capacity, in that chambers are formed between the two fabric layers either by changing the goods or by weaving into a single fabric covering. The chambers form so-called reinforcing fields or reinforcing fields which function as a type of reinforcing structure if an inner fabric layer of the respective flat fabric part forming this chamber is connected, in particular glued, to a wall of the inner bag in a materially bonded manner.For example, the two-ply sheet fabric parts may be such that the fabric layers of adjacent chambers change and interact along the goods change paths when static or dynamic forces are absorbed in their surface. This takes place with constant binding and thread density without binding in single-layer regions advantageously in a tissue density of 100%.Instead of changing goods, the chambers can also be formed by weaving into a single woven layer or a single-layer woven seam.Accordingly, the chambers or two-ply planar woven fabric parts are bounded either by goods exchange paths or single-ply woven seams. The shape of a chamber defined by such a boundary can be of various shapes, for example hexagonal, in particular honeycomb-shaped, triangular or round, in particular button-disc-shaped.The net formed in this way forms a type of force polygon which derives the effect of forces in the environment of the textile surface. The desired required static deformability is achieved by the force-elongation behavior (modulus) of the optionally used yarn, the design of the net structure for force dissipation and the ratio of double-ply to single-ply fabric surface.Furthermore, the energy absorption element according to the invention can be realized in such a way that the planar fabric parts, in particular their reinforcing panels, are connected, preferably bonded, to an outer wall of the inner bag in a materially bonded manner.The inflatable textile component according to the invention is preferably provided for a vehicle, can be designed in particular as an energy absorption element and / or insulation element for a vehicle, wherein in the inflatable textile component according to the invention an air-impermeable inner part is provided, in the form of an OPW airbag woven in a matched manner in one piece, and is externally reinforced or reinforced by two identically shaped parts firmly connected to the inner part, in the form of a two-ply OPW planar structure woven in a matched manner in each case.The textile component according to the invention can be advantageously further developed in such a way that the surgical air bag has a single-ply woven seam along its outer contour, which additionally forms mounting surfaces.Furthermore, the textile component according to the invention can be realized in such a way that the surgical air bag is coated or laminated.Furthermore, the textile component according to the invention can be implemented in such a way that the reinforcing parts have a multiaxial load-bearing capacity, in that chambers are formed between the two fabric layers either by goods being changed or by single-layer woven seams.Moreover, the textile component according to the invention can be realized in such a way that the reinforcing parts have a single-ply woven seam along their outer contour, which seam forms mounting surfaces congruently with the woven seam of the surgical air bag.Furthermore, the textile component according to the invention can be designed such that the exterior reinforcement parts are glued to the walls of the inner part and sewn along the circumferential seams and assembly surfaces of the same shape.The textile component according to the invention is a robust textile component and serves as an insulating element within the scope of the crumple zones and, in the case of force effects on the vehicle, for example due to a crash, as an air cushion ("air buffer"), which absorbs the force effect by means of the counterpressure built up in its interior, and also carries out a diversion of the force effect into the surface via the reinforcement. A deployment process does not take place, i.e. the protective effect takes place directly within the scope of the respective installation space.As shown in FIG. 1 explained in more detail below, the textile component according to the invention (also referred to as "air buffer") is schematically represented, which is constructed as follows:the inflatable inner member is a one-piece, matched woven air bag with a forming circumferential (OPW) air bag;a blowing opening is woven into the airbag;the reinforcement on both sides is effected by a two-ply fabric of exactly the same dimensions as the inner part and with a synchronously aligned circumferential woven seam;the circumferential woven seams are each formed to form an assembly field and serve, in a 3x2-layer configuration, for mechanical fastening in the installation space. A reduction in the clamping distance must be taken into account in this case;the inner airbag is coated so as to be impermeable to air;the two reinforcing parts comprise a multiaxially loadable double fabric;the connection of the inner surgical air bag and the two reinforcement parts is effected by a sewing seam along the circumferential weaving seam. This produces a connection to a 6-ply circumferential seam or to an assembly area. The wall of the hollow body thus comprises three layers;the sewing seam begins at one side of the injection opening, leads along the seams to the first mounting area, works there across, leads further along the seams to the second mounting area, works again across, and leads from there along the seams to the other side of the injection opening.The production or production of the textile component or air buffer according to the invention is carried out on the basis of a uniform basic fabric construction in the following steps:- Trimmed weaving into 2 layers with 2 warp systems using jacquard technology of an OPW airbag and two reinforcing parts of equal dimension;fitting both fabric sheets;coating or laminating the surgical air bag on both sides in the fabric web;cutting (using a laser) the parts that have been matched from the respective web of fabric using a uniform trimming program;congruent joining of the surgical air bag and the 2 reinforcement parts by adhesive bonding and by a circumferential seam to form the textile component according to the invention.The bonding of the multiaxially loadable reinforcing fabric can be effected, with a corresponding series size, before the laser cut-out in three identically running fabric webs. The force transmission within the bonded surface varies depending on the bonding technique.As shown in FIG. 2 explained in more detail below, the adhesive bonding of a reinforcing fabric produced by the goods changing technique is schematically illustrated. The force transmission takes place via the goods exchange paths between the fabric layers.As shown in FIG. 3 explained in more detail below, it is shown schematically how the force is transmitted via the honeycomb woven-in seams into the separately located fabric layers.Definitions of terms:DG:The short designation DG stands for thread density or fabric density. It is calculated according to a formula of Prof. Ruhr; for example, the formula for calculating the fabric density according to Prof. Ruhr is disclosed in EP 0616 061 B1; furthermore, on page 5, lines 47 and 48, the reference to the formula of Prof. Ruhr is contained in the handbook of Stefan Kleinhans "Textile Tests" of the textile-technology institution of the company AKZO from 1973.Goods Switching Technique:A chamber is formed between two fabric layers in that the warp and weft threads are alternately interwoven in the first and in the second fabric layer with the same weave pattern. During the transition from fabric layer to fabric layer, a product change path arises. The force transmission into the surface takes place slidingly from chamber to chamber and simultaneously from fabric layer to fabric layer.OPW Airbag:The short designation OPW stands for one pie-seven. This is an airbag, the OPW airbag, produced using Jacquard technology in one piece, matched, woven in two layers with a shaping circumferential single-layer woven seam.Reduced clamping distance:The inflation process shortens the textile component. During installation, this measure must be taken into account by suitably designing the mounting fields.Net of Continuous Seams:A chamber (referred to here as a "reinforcing field") is formed between two fabric layers by bringing the fabric layers together to form a stable single-layer woven seam (with 100% DG). The force distribution into the surface takes place multiaxially via the network of woven seams into the reinforcing fields of the two parallel fabric layers.The textile component or the air buffer according to the invention can be used by triggering the inflation process in conjunction with the sensor system for the airbag system. This relates to the crushing zones in side and frontal impacts. Improved occupant protection can be achieved in the foot well, in the area of the body side parts below the window sill and in the rear of the vehicle. The reinforcing fabric consists of the same basic textile construction as the OPW airbag woven in one piece and, in the bonding techniques, goods change or honeycomb lattice structure can be carried out by means of woven seams.Preferred embodiments of the invention are explained below by way of example with reference to the figures.The following are shown: FIG. 1 shows a schematic illustration of a textile component according to the invention, preferably in the form of a textile energy absorption element; in particular, FIG. 1 a) shows a plan view of the textile energy absorption element according to the invention, FIG. 1 b) shows a sectional view through the textile energy absorption element along a section line A-A of FIG. 1 a), FIG. 1 c) shows a sectional view through the textile energy absorption element along a section line B-B of FIG. 1 a), and FIG. 1 d) shows a sectional view through the textile energy absorption element along a section line C-C of FIG. 1 a); FIG. 2 shows a schematic illustration of a section of the textile component according to the invention in the form of the textile energy absorption element from FIG. 1 ; in particular, FIG. 2 a ) shows a plan view of a planar fabric part of the textile energy absorption element and FIG. 2 b ) shows a sectional view through the planar fabric part from FIG. 2 a ) along a section line I-I from FIG. 2 a ) in the embodiment as a product change; and FIG. 3 shows a schematic illustration of a section of the textile component according to the invention in the form of the textile energy absorption element of FIG. 1 in the embodiment of a honeycomb lattice structure; in particular, FIG. 3 a ) shows a plan view of a planar fabric part of the textile energy absorption element and FIG. 3 b ) shows a sectional view through the planar fabric part of FIG. 3 a ) along a section line II-II of FIG. 3 a ).FIG. 1 shows a schematic illustration of a textile component according to the invention, in particular in the form of a textile energy absorption element 10 according to the invention.In particular, FIG. 1 a) shows a plan view of the textile energy absorption element 10, FIG. 1 b) shows a sectional view through the textile energy absorption element 10 along a section line A-A of FIG. 1 a), FIG. 1 c) shows a sectional view through the textile energy absorption element 10 along a section line B-B of FIG. 1 a), and FIG. 1 d) shows a sectional view through the textile energy absorption element 10 along a section line C-C of FIG. 1 a).In this exemplary embodiment, the textile energy absorption element 10 according to the invention is provided for a vehicle, in particular for a motor vehicle such as a motor vehicle with an internal combustion engine or an electric vehicle, and is preferably arranged in a crumple zone of the vehicle.As is schematically shown in FIG. 1 a), the textile energy absorption element 10 comprises an inflatable and air-impermeable inner bag 12 and a textile fabric 14.The inner bag 12 is preferably an OPW inner bag or OPW airbag (OPW airbag) 12 woven in one piece and has a circumferential woven seam 18, as is schematically illustrated in FIGS. 1 a) to 1 c). The OPW airbag or OPW inner bag 12 thus has a two-layer section or region in which the OPW inner bag 12 forms an inflatable inner bag chamber. In addition, the surgical-use inner bag 12 has a single-ply edge section or edge region which is formed by the woven seam 18. In the non-inflated state of the surgical-use inner bag 12, the two layers of the two-layer region lie congruently one above the other and the single-layer region in the form of the woven seam 18 surrounds the two-layer region forming the inner bag chamber. The inner bag 12 can be configured in a plain weave.In this exemplary embodiment, the textile fabric 14 has two two-ply fabric surface parts 14 1, 142 which are both woven in one piece as OPW fabric surface parts 14 1, 142.The two two-ply planar fabric parts 14 1, 142 are dimensioned such that, in the state lying on top of one another, they are connected to one another in a respective circumferential edge region 16 of the planar fabric parts 14 1, 142 such that a chamber 8 is formed, in which the inner bag 12 is accommodated. In particular, the circumferential woven seam 18 of the inner bag 12 and the two respective circumferential edge regions 16 of the two flat fabric parts 14 are connected to one another in 1, 142 such that the circumferential woven seam 18 of the inner bag 12 lies between them. Particularly preferably, the woven seam 18 and the two edge regions 16 are sewn together.FIG. 1 b) shows a section along the section line A-A, which runs in the width direction of the textile energy absorption element 10, it being evident from the section that the woven seam 18 is sewn in 1, 142 to the respective edge regions 16 of the two two-ply planar woven fabric parts 14. Furthermore, in this section, the inner sack chamber of the surgical inner sack 12 accommodated in the chamber 8 can be clearly seen.As can also be seen, the dimensions of the two planar fabric parts 14 1, 142 and the inner bag 12 accommodated in the chamber 8 are dimensioned such that the two planar fabric parts 14 1, 142 in the state lying on top of one another and the inner bag 12 accommodated in the chamber 8 in the non-inflated state have an identical outer contour, i.e. are congruent; this also applies to a correspondingly configured fluid inlet channel 22 which is formed on an edge section of the two planar fabric parts 14 1, 142 and of the inner bag 12 in order to be able to fill the inner bag chamber of the inner bag 12 with a fluid such as air in the event of a vehicle impact. FIG. 1 d ) shows a section through the fluid inlet channel 22 along the section line C-C of FIG. 1 a ), wherein the structure of the fluid inlet channel 22 behaves analogously to the section shown in FIG. 1 b ).As can also be seen particularly well in FIG. 1 a), the circumferential woven seam 18 of the inner surgical-care bag 12 and the circumferential edge regions 16 of the two planar fabric parts 14 form, in 1, 142 on two end sections lying opposite one another in the longitudinal direction of the energy absorption element 10 or on common sections, two planar mounting straps 20, for example in the form of rectangular planar sections, wherein one of the two planar mounting straps 20 is shown in section along the section line B-B in FIG. 1 c ).As can be seen in FIGS. 1 b) and 1 c), the mounting brackets 20 and the circumferential edge region 16 are constructed as follows:The 2 fabric layers of the inner surgical air bag 12 are woven to form a fabric layer with DG 100% in a panama bond to form a layer 18.The 2 fabric layers of the reinforcing fabric, i.e. the flat fabric parts 14 1 and 14 2, are respectively interwoven to form a fabric layer with DG 100% in Panama weave.The encircling seam 16 or the mounting flaps 20 are constructed with a thread density of thus 6 individual fabric layers (2 fabric layers of the surgical air bag 12 and 4 fabric layers of the two reinforcing fabrics or planar fabric parts 14 1 and 14 2). By the weaving technology joining in a higher-binding embodiment (Panama binding), a single-layer edge region 18, 16 with 100% DG and thus particularly stable results from the respective two-plyness.The respective mounting brackets 20 and the edge region 16 accordingly consist of 3 single-layer, shaping sections. Preferably, the surgical air bag (inner bag) 12 is coated or laminated, and the outer surface fabric parts 14 1, 142 are glued to the outer wall of the inner bag 12, preferably glued over the entire surface or partially glued.Possible embodiments of the above-mentioned textile fabric 14, in particular of the two two-ply planar fabric parts 14 1, 142 are described below in conjunction with FIGS. 2 and 3.The flat fabric parts 14 1, 142 can be at least partially two-ply and designed as reinforcing parts or reinforcing fields with a multiaxial load-bearing capacity, in that chambers 4 are formed between the two fabric layers either by goods change (exemplary embodiment of FIG. 2 ) or by weaving into a single fabric covering (exemplary embodiment of FIG. 3 ), which are thus limited by the weaving or the goods change. The weaving into the single fabric layer or the goods change thus function as corresponding boundaries 6 of the chambers 4.In connection with the so-called "goods change", it is assumed that all warp and weft threads (which represent the "goods") leave their fabric layer at the points marked with the reference numeral 7 in FIG. 2 b ) and change into the respective other fabric layer. The term "goods change" therefore comes.The formation of the aforementioned boundaries 6 can therefore be accomplished either by forming woven seams or in the course of the goods change just described, wherein the boundaries 6 can function in each case as boundaries of reinforcement fields or chambers 4, which will be discussed in more detail below.FIG. 2 shows a schematic illustration of a section of the textile component according to the invention in the form of the textile energy absorption element 10 from FIG. 1 ; in particular, FIG. 2 a ) shows a plan view of a planar fabric part 14 1 or 14 2 of the textile planar structure 14 of the textile energy absorption element 10, and FIG. 2 b ) shows a sectional view through the planar fabric part 14 1 or 14 2 from FIG. 2 a ) along a section line I-I.In particular, FIG. 2 a) shows a highly schematic detail of an exemplary embodiment of a textile fabric 14 according to the invention with a possible embodiment of the honeycomb-shaped arrangement or configuration of chambers 4 and boundaries 6 in plan view (only one fabric layer visible). Alternatively, a triangular arrangement or configuration of chambers is also conceivable.The textile fabric 14 according to the invention comprises two-ply regions with two fabric plies 130, 132, wherein the two-ply regions between the two fabric plies 130, 132 form respective chambers 4, wherein the chambers 4 are surrounded by boundaries 6, which in this exemplary embodiment are formed by goods changes 7, but alternatively are also formed by a single-ply woven seam 120, as will be described below in connection with FIG. 3. The two-ply regions together with the boundaries 6 thus form a net-like lattice structure which is configured to absorb static and dynamic forces in the tissue plane.As can be seen in particular from FIG. 2 a), an arbitrary section of an exemplary embodiment of the textile fabric 14 is shown with, for example, honeycomb-shaped adjacently arranged chambers 4, which are surrounded by boundaries 6. See this cut from a web of OPW fabric supplied by a loom after completion of the weaving process. The surgical drape, shown here in plan view, for which reason only one, namely the upper fabric layer 130 of the two-ply surgical drape according to the invention, is visible in FIG. 2 a), can be seen to be honeycomb-shaped boundaries 6, which are formed by goods changes 7 (or alternatively by a woven seam 120, cf. FIG. 3 ).Further details in this respect can be seen from FIG. 2 b). The boundaries 6, which are represented here only by thin lines, represent goods change paths in which the upper fabric layer 130, which can be seen here, is connected to the lower fabric layer 132, which is situated below it in the direction of the plane of the drawing, in the form of goods change between the two fabric layers 130 and 132 and thus enclose chambers 4.The boundaries 6 serve to absorb tensile stress and to distribute it in the surface. In the two-ply reinforcing panels 24 indicated by way of example in FIG. 2 a), the textile fabric 14 is connected, preferably bonded, to a wall of the surgical-use inner bag by a material bond.Furthermore, FIG. 2 a) shows a section line I-I, which illustrates, by way of example, a section through the two fabric layers of a planar fabric part 14 1 or 14 2 of the textile planar structure 14. In particular, the section runs through a chamber 4 formed by the two fabric layers 130, 132 of the flat fabric part 14 1 or 14 2 and the arrangement of a goods change, which is provided with reference numeral 7, as can be clearly seen in FIG. 2 b).In particular, FIG. 2 b ) shows in particular an upper fabric layer 130 and a lower fabric layer 132 of one of the planar fabric parts 14 1 or 14 2 of the textile planar structure 14. Warp threads 136 of the upper fabric layer 130 of the first chamber 4 shown on the right side wrap around weft threads 134 until they leave the upper fabric layer 130 by changing the goods at the point marked with the reference numeral 7 and enter the lower fabric layer 132 and wrap around weft threads 138 there-travelling notionally to the left in FIG. 2 b ) until they leave the lower fabric layer 132 again by changing the goods at the point marked with the further reference numeral 7 and return to the upper fabric layer 130 and wrap around weft threads 134 there.In an analogous manner, warp threads 140 (going from right to left in FIG. 2 b ) run out of the lower fabric layer 132 by changing goods into the upper fabric layer 130 at the point marked with the reference numeral 7 and run back into the lower fabric layer 132 by changing goods at the point marked with the further reference numeral 7. The weft threads take exactly the same course in terms of binding technology.When using the goods change technique, one bond L1 / 1 or P2 / 2 is used throughout. The net structure effected by the change of goods can be designed individually.As already mentioned, the fabric layer of the inner bag 12 forming a wall is connected, preferably glued, to the upper fabric layer 130 in a materially bonded manner in FIG. 2 b). Tensile and compressive forces can be absorbed in the surface by displacement between the reinforcing fields 24 and the fabric layers.The textile fabric 14 is preferably realized in such a way that the two fabric layers 130, 132 are woven in the two-layer regions in plain weave L1 / 1 with a fabric density (DG) according to Prof. Roll per fabric layer of 100%.FIG. 3 shows a schematic illustration of a section of the textile component according to the invention in the form of the energy absorption element 10 according to the invention from FIG. 1 in a further embodiment; in particular, FIG. 3 a) shows a plan view of a planar fabric part 14 1 or 14 2 of the textile planar fabric 14 of the textile energy absorption element 10 and FIG. 3 b) shows a sectional view through one of the planar fabric parts 14 1 or 14 2 of FIG. 2 a) along a section line II-II.In this exemplary embodiment, the planar fabric parts 14 have 1, 142 two-ply reinforcing panels 24, which are bonded to a wall of the inner bag 12 and are surrounded by boundaries 6 in the form of a single-ply woven seam 120.In the illustration according to FIG. 3 a), single-layer seams 120 are arranged according to the invention between double-layer chambers 4, which are glued to the inner bag 12. In the region of the single-ply seams 120, the two fabric layers of the textile planar fabric parts 14 are interwoven with one another in 1, 142 to form a single fabric layer in the form of the seam 120. FIG. 3 b) shows a highly schematic illustration along the section line II-II of FIG. 3 a) in section. The single-ply seams 120 are therefore located adjacent to the double-ply chambers 4, which form the reinforcing panels 24 by adhesion to the inner bag 12, as shown in FIG. 3 b).In particular, FIG. 3 b ) can be taken from a sectional view along the section line II-II in FIG. 3 a ) through the textile fabric 14 1 or 14 2 shown there. An upper fabric layer 30 is shown, which is woven from weft threads 34 and warp threads 36 shown in punctiform fashion, and a lower fabric layer 32, which is woven from weft threads 38 shown in punctiform fashion and warp threads 40 shown in linear fashion. According to the OPW technique, the warp threads 36 run in such a way that they wrap around the weft threads 34 in the region of the stitches 120 in the same way as do the warp threads 40 of the lower fabric layer 32. In the chamber region of the chamber 4 adjoining the latter, the respective warp threads 36, 40 and the weft threads 38 again run as a result of controlled shed change in such a way that they produce a double-layer woven fabric with formation of the chamber 4. If the illustration according to FIG. 3 b) is read from right to left, it can be seen that, following the chamber 4, a single-ply region, namely a further woven seam 120, is again produced, in which the warp threads 36, 40 and the weft threads 38 of the two fabric layers 30, 32 of the chamber 4 converge again in order, following this, to form a further chamber 4 (in FIG. 3 b) on the left side).In the case shown, the woven seam 120 is provided in Panama weave, while the two-ply reinforcing panel 24 is formed in plain weave and is glued to the wall of the surgical-use inner bag 12.The upper fabric layer can have a yarn density or fabric density according to Prof. Roll of 100%, while the lower fabric layer can have a yarn density or fabric density according to Prof. Roll of 70%.As can be understood from FIG. 3 b), the multiaxial force flow into the surface takes place via the stable single-layer network of woven seams 120 into the two-layer reinforcing spring 24 per fabric layer.In a modification of the exemplary embodiment of FIG. 3, the textile fabric is formed such that in the single-ply regions the weaves P2 / 2, K2 / 2 or K3 / 1 are woven with a weave density (DG) according to Prof. Roll of 100% and in the two-ply regions the canvas weave L1 / 1 is asymmetrically woven, namely in the one weave layer with a weave density (DG) according to Prof. Roll of 100% to loads the other weave layer with a weave density (DG) according to Prof. Roll of approximately 78% per weave layer. In this connection, the textile fabric can preferably be configured such that in the single-ply regions the weaves P 2 / 2, K 2 / 2, K 3 / 1 or higher weave with a fabric density (DG) according to Prof. Roll of 100%, and in the two-ply regions the weaves and thread densities are asymmetrically woven, namely in the one fabric layer with a fabric density (DG) according to Prof. Roll of 100%, at the expense of the thread density of the other fabric layer with a lower fabric density of <100%, preferably in plain weave L 1 / 1, Panama weave P 2 / 2 or Twill weave K 3 / 1.The asymmetrical embodiment is preferably such that a fabric layer with a fabric density (DG) of 100% serves as a closed textile surface as reinforcing field 24 (adhesive surface).The material is used in all the embodiments of FIGS. 1 to 3 in the form of high-strength yarns with as thin yarn packages as possible with the aim of producing a large inner surface in the textile surface of the textile fabric and in order to fulfil the functions according to the invention. Polypropylene, polyethylene, polyester, polyamide, aramid and carbon fiber have proven to be suitable as types of material.The features of the invention disclosed in the above description, in the drawings and in the claims can be essential for the realization of the invention both individually and in any combination.References included in the specificationThis list of documents cited by the applicant has been produced in an automated manner and is only included for the better information of the reader. The list is not part of the German patent application or utility model application. The DPMA does not take any adhesion for any faults or omissions.Patent Literature citedEP 0616 061 B1

[0037]

Claims

Textile energy absorption element (10) for a vehicle, in particular for a motor vehicle such as a motor vehicle with an internal combustion engine or an electric vehicle, having an inflatable and air-impermeable inner bag (12) which is accommodated in a textile fabric (14), wherein the textile fabric (14) has at least two, at least partially multilayer, preferably two-ply, flat fabric parts (14 1, 142) which are woven in one piece as OPW flat fabric parts (14 1, 142) and are connected to one another in the state lying on top of one another in a respective circumferential edge region (16) of the flat fabric parts (14 1, 142) in such a way that a chamber (8) is formed in which the inner bag (12) is accommodated.Energy absorption element (10) according to claim 1, wherein the inner bag (12) is an OPW inner bag (12) woven in one piece and has a circumferential woven seam (18) which is connected, preferably sewn, in a 1, 142) manner to the respective circumferential edge regions (16) of the planar fabric parts (14.Energy absorption element (10) according to Claim 1 or 2, wherein the two planar fabric parts (14 1, 142) in the state in which they lie one on top of the other and the inner bag (12) accommodated in the chamber (8) in the non-inflated state have an outer contour of the same shape.Energy absorption element (10) according to either of Claims 2 and 3, wherein the encircling woven seam (16) of the inner surgical-use bag (12) and the encircling edge regions (16) of the two planar woven fabric parts (14 1, 142) form a planar mounting flap (20) on at least one common portion.The energy absorbing element (10) according to any of the preceding claims, wherein the inner bag (12) is coated.Energy absorption element (10) according to one of the preceding claims, wherein the planar fabric parts (14 1, 142) are formed at least in sections in two layers with a multiaxial load-bearing capacity, in that chambers (4) are formed between the two fabric layers (130, 132; 30, 32) either by goods change (7) or by weaving into a single fabric covering.Energy absorption element (10) according to claim 6, wherein the planar fabric parts (14 1, 142) form, in their two-layer sections, reinforcing panels (24) which are surrounded by boundaries (6) which are formed by a single-layer woven seams (120) or goods change paths (7).Energy absorption element (10) according to one of the preceding claims, wherein the planar fabric parts (14 1, 142), in particular their reinforcing panels (24), are connected, preferably bonded, to an outer wall of the inner bag (12) in a materially bonded manner.Inflatable textile component, wherein an air-impermeable inner part, in the form of an OPW airbag woven in a single-piece, is externally reinforced by two identical-shape parts firmly connected to the inner part, in the form of a two-ply OPW fabric woven in a single-piece.Textile component according to claim 1, wherein the surgical air bag has a single-layer woven seam along its outer contour, which additionally forms mounting surfaces.The textile component of claim 10, wherein the surgical air bag is coated or laminated.Textile component according to claim 10 or 11, wherein the reinforcing parts have a multiaxial load-bearing capacity, in that chambers are formed between the two fabric layers either by goods change or by single-layer seams of weave.Textile component according to claim 11, wherein the reinforcing parts have a single-layer woven seam along their outer contour, which, congruently with the woven seam of the surgical air bag, forms mounting surfaces.Textile component according to Claims 10 to 13, wherein the exterior reinforcement parts are glued to the walls of the inner part and are sewn along the circumferential seams and mounting surfaces of the same shape.

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