阅读说明：本技术 结构部件、座椅部件以及车辆座椅 (Structural member, seat member, and vehicle seat ) 是由 T·佛罗茨 D·巴尔 R·W·黑梅尔拉特 S·奥尔达奇 于 2020-04-01 设计创作，主要内容包括：本发明涉及一种结构部件(1)、特别是一种动力学结构部件,其包括具有至少一个自由度(F1、F2、R1、R2)的柔性结构(5、50、500),其中,-所述柔性结构(5、50、500)可在压缩位置和扩张位置之间移动,或反之亦然,并且,-其中,所述柔性结构(5、50、500)包括至少一个子结构(5.1、5.2),所述子结构被设置成,在所述柔性结构(5、50、500)的扩张位置中扩张成曲线(KU)或弧线和/或线性地扩张。(The invention relates to a structural component (1), in particular a kinetic structural component, comprising a flexible structure (5, 50, 500) with at least one degree of freedom (F1, F2, R1, R2), wherein-the flexible structure (5, 50, 500) is movable between a compressed position and an expanded position, or vice versa, and-wherein the flexible structure (5, 50, 500) comprises at least one substructure (5.1, 5.2) which is arranged to expand into a curve (KU) or arc and/or linearly in the expanded position of the flexible structure (5, 50, 500).)

1. Structural component (1), in particular a kinetic structural component, comprising:

a flexible structure (5, 50, 500) having at least one degree of freedom (F1, F2, R1, R2), wherein

-the flexible structure (5, 50, 500) is movable between a compressed position and an expanded position or vice versa, and

-wherein the flexible structure (5, 50, 500) comprises at least one substructure (5.1, 5.2) which is configured to expand in an expanded position of the flexible structure (5, 50, 500) to form a curve (KU) or an arc and/or to expand in a linear manner.

2. Structural component (1) according to claim 1, wherein the substructure (5.1, 5.2) comprises a plurality of expansion elements (5.3) hingedly coupled to each other in parallel and/or in an array (R0, RH1, RH2) to expand into the expanded position or to compress into the compressed position in the at least one degree of freedom (F1, F2, R1, R2).

3. The structural component (1) according to claim 1 or 2, wherein the flexible structure (5, 50, 500) is designed as a single piece flexible structure.

4. Structural component (1) according to one of the preceding claims, wherein the substructure (5.1, 5.2) is designed as a flexible grid (G) with a plurality of bar elements (50.3, 500.3) which are hinged on at least one link (50.1, 500.1), in particular a movable link, by means of a joint (5.4, 50.2, 500.2).

5. Structural component (1) according to claim 4, wherein the movable links are designed to be narrow-shaped and/or flat-shaped.

6. Structural component (1) according to one of the preceding claims, wherein the flexible structure (5, 50, 500) comprises at least one or more outer surface elements (6) which are coupled in terms of movement to the substructure (5.1, 5.2).

7. Structural component (1) according to one of the preceding claims 4 to 6, wherein the bar elements (50.3, 500.3) having different lengths (L) and thus the bar elements (50.3, 500.3) in columns (R0, RH1, RH2) and/or arranged parallel to each other are braced in an expanded state in an arched or curved form.

8. Structural component (1) according to one of the preceding claims 4 to 6, wherein the bar elements (50.3, 500.3) have the same length (L) and thus the bar elements (50.3, 500.3) in columns (R0, RH1, RH2) and/or arranged parallel to each other are linearly spread apart in the expanded state.

9. Structural component (1) according to one of the preceding claims 2 to 8, wherein the substructure (5.1, 5.2) is formed by a plurality of recurring mechanically expanding elements (5.3), in particular bar elements (50.3, 500.3), which are connected to form a column (R0, RH1, RH2), in particular by links (50.1, 500.1).

10. Structural component (1) according to one of the preceding claims 2 to 9, wherein the substructure (5.1, 5.2) is formed by a plurality of columns of expansion elements (5.3) consisting of individual columns (R0, RH1, RH2) of expansion elements (5.3) arranged one above the other or adjacent to each other.

11. Structural component (1) according to one of the preceding claims, wherein the substructure (5.1, 5.2) is coupled to the one or more outer surface elements (6) in such a way in terms of movement that the substructure (5.1, 5.2) changes its shape, in particular its volume, and moves, in particular expands or compresses, depending on the controlled force acting on one or more links (50.1, 500.1) of the substructure (5.1, 5.2).

12. A seat part, in particular a backrest (2) or a seat part (3), wherein the seat part comprises at least:

-a support structure (T),

-a filler (7, 70, 700) and/or a cover element (8), and

-a structural component (1) according to one of the preceding claims 1 to 11, wherein at least the substructure (5.1, 5.2) is coupled in terms of movement to the padding (7, 70, 700) or to the cover element (8).

13. The seat part according to claim 12, wherein the movable link is coupled in terms of movement to the padding (7, 70, 700) and/or to the cover element (8).

14. Seat part according to claim 12 or 13, wherein the structural part (1) is arranged between the support structure (T) and the padding (7, 70, 700) and/or the cover element (8).

15. Seat (S) comprising at least two seat parts, wherein the at least two seat parts are movable relative to each other and at least one of the seat parts comprises a structural part (1) according to one of claims 1 to 11, wherein the flexible structure (5, 50) is movable to an expanded position or a compressed position upon movement of the movable seat part relative to the other seat part.

Technical Field

The invention relates to a structural component for a seat, in particular a vehicle seat. The invention further relates to a seat part and a vehicle seat.

Background

Generally, the structural components of the seat are known. Such structural components typically comprise a fiber-reinforced thermoplastic with integrated fiber reinforcement. In order to place the seat in various positions, such as a comfortable seating position, a recumbent position or a folded position, the seat is composed of a plurality of parts, such as a backrest, a seat part and a foot part, which are rotatably connected to one another by means of a swivel or latching fitting.

Disclosure of Invention

The object of the invention is to provide a structural component which can be adjusted in an easy manner to one of a plurality of positions and which compensates and absorbs the occurring loads and forces during the process. Furthermore, it is an object of the invention to provide an improved seat part, in which various support variants can be provided in a simple manner, and a seat having such an improved seat part.

With regard to the structural component, this object is achieved by the features of claim 1. With regard to the seat part, this object is achieved by the features of claim 12. With regard to the seat, this object is achieved by the features of claim 15.

Developments of the invention are the subject matter of the dependent claims.

This object is achieved according to the invention by a structural component, in particular a kinetic structural component, comprising a flexible structure with at least one degree of freedom, in particular at least one translational degree of freedom and/or at least one rotational degree of freedom, wherein the flexible structure is movable between a compressed position and an expanded position, or vice versa, and wherein the flexible structure comprises at least one sub-region or sub-structure configured to expand into a bend or arc and/or expand in a linear manner in the expanded position. Furthermore, the sub-regions or sub-structures of the flexible structure are configured to compress to form a substantially flat or straight surface in the compressed position of the flexible structure.

Here, forces acting on the flexible structure, such as controlled compressive or shear forces, may be absorbed and transferred in order to change the volume, shape, size and/or position of the flexible structure, in particular of the sub-regions of the flexible structure, during expansion or compression, and in particular to move the flexible structure, in particular of the sub-regions of the flexible structure, in a curved or arcuate and/or linear manner. For example, forces acting on the flexible structure, such as controlled compressive or shear forces, may be absorbed and transferred in order to change the shape, size and/or position of the flexible structure, in particular of the sub-region of the flexible structure, in particular to move the flexible structure, in particular of the sub-region of the flexible structure, in a linear manner and/or to tilt or tilt the flexible structure, in particular of the sub-region of the flexible structure. For example, one or more sub-regions or substructures are moved, in particular vertically displaced, tilted, inclined or spread out, during expansion in such a way that the sub-regions or substructures have an arcuate or curved outer surface or have a linear expansion shape, in particular upon linear expansion or extension. During compression, one or more sub-regions or substructures move back, in particular fold or collapse.

In particular, the substructure comprises a plurality of expansion elements, which are hingedly arranged in columns and/or coupled in parallel to each other, to expand into an expanded position or to compress into a compressed position in at least one degree of freedom, in particular in at least two or more degrees of freedom.

For example, the flexible structure or also the substructure is constructed as a one-piece flexible structure. In particular, the flexible structure comprises a plurality of expansion elements, such as links, joints and/or rods, which are connected in rows and/or in parallel with each other for expansion or compression in at least one degree of freedom, in particular in at least two or more degrees of freedom.

One possible embodiment provides for the substructure to be designed as a flexible grid with a plurality of bar elements, wherein the bar elements are articulated to at least one movable chain link by means of a bar joint.

The lever interface is designed, for example, as a film hinge or a film interface or as a common rotary interface. Film hinges or film joints are in particular so-called strap hinges, rather than being formed by mechanical parts, such as rotary joints. The film hinge or film joint is in particular a flexible, thin-walled hinge strap between the two parts to be connected, for example between the rod element and the movable link. For example, in the case of injection molded parts, the film hinge or film joint is formed from an elastomer, in particular a thermoplastic elastomer, such as polypropylene or ethylene propylene diene monomer, since this material has the necessary softness and ductility to fulfill the function of lasting flexibility of the lever joint. Such thin-walled film hinges or film joints made of plastic, for example polypropylene, have a high bending fatigue strength, so that they are durable and long-lasting.

The rod elements are designed, for example, as ribs, slats and/or strips. The rod element is in particular formed as an injection-molded part, for example from an elastomer, in particular from a thermoplastic elastomer, for example from polypropylene or EPDM. The rod element can in particular be formed from a harder plastic than the rod joint and/or from a softer plastic than the movable chain link.

Furthermore, the rod elements may be arranged in a diamond-shaped manner. In particular, the recurring rod elements are arranged between the longitudinal elements in such a way that the grid G comprises rhombi-shaped portions which are mirror images of one another along the longitudinal elements and which change their shape and move, in particular linearly expand or linearly compress, depending on the force and the controlled force. The respective rhombuses are formed here by parallel and spaced longitudinal elements which are connected to one another by bar elements, for example planar slats, which are hinged to the longitudinal elements. The repeated occurrence of the rod elements between the longitudinal elements creates parallel and serial dynamics, thereby linearly expanding or compressing the structural members.

One end of the respective rod element or one end of the respective strip of the diamond-shaped part mirrored with respect to one another is connected towards the center to a central longitudinal element or central part, in particular a control member.

The central longitudinal element forms mirror axes of the rhombuses that are mirror images of each other. The opposite ends of the respective rod elements or of the respective slats of the rhombuses, which are mirror images of each other, are connected to an outer longitudinal element or rhombus outer surface, which in turn is connected to the next compensation element or to the outer surface of the forming grid and thus forms a flexible structure.

The rod elements may be connected to form an expansion grid due to the linear expansion of the diamond-shaped outer surfaces of the rod elements. If the grid expands, the respective centers are moved 90 ° to expand. If the movement of the centerpiece is activated, the entire grid, and thus the flexible structure, may expand or compress.

The grid can be scaled as needed, so expansion or compression and stability can be tailored to the intended use or desired application.

One or more of the movable links are designed, for example, to be narrow or flat. For example, the one or more movable links are designed as one or more movable ribs, one or more slats, one or more strips and/or one or more movable surfaces. The one or more movable links are in particular formed as an injection-molded part, for example from a harder plastic than the lever element and/or the lever interface, in particular from a thermoplastic, for example from PMMA, PC/ABS.

The rod joint, the rod element and/or the movable link may be designed as an injection-molded part, in particular as an injection-molded flexible grid. Alternatively, the flexible grid may be formed by components that are hingedly coupled to each other.

Furthermore, the flexible structure may be surrounded by one or more, in particular outer surface elements, in particular padding, coverings or the like, for example foam cushions, foam shells or foam boards. The one or more outer surface elements are herein particularly coupled in terms of movement to the inner substructure. For example, the outer surface elements and the respective movable links are coupled in terms of movement to the substructure.

Furthermore, the kinetic structure component may be formed as a single piece formed by the outer surface element and the inner flexible structure, in particular a flexible grid with lever interfaces having a horizontal rotation axis. In addition, the flexible structure may be formed from multiple components, such as a combination of a grid structure and a column structure.

The flexible structure, in particular the substructure, can be formed here by recurring mechanical expansion elements, in particular rod elements, which are connected to one another in an articulated manner, in particular by means of movable links, to form a row. The rod elements may have different lengths, so that the rod elements arranged in a row are spread apart in an arcuate or curved manner in the expanded state. Alternatively or additionally, the rod elements may have the same length, so that rod elements arranged in a row and/or in parallel with each other are linearly spread out.

Furthermore, it is also possible to provide a plurality of rows of expansion elements or rod elements, in particular two or three rows of expansion elements arranged next to one another and/or one above the other.

The expansion element or rod element is designed, for example, in a Z-shape or L-shape. Furthermore, the expansion element or the rod element is designed to have a spring elasticity. In particular, the recurring expansion elements or rod elements are arranged between the outer surface elements in such a way that they change their shape and move, in particular expand, in particular spread apart or spread apart, as a function of the applied and controlled force. The expansion elements or rod elements which are present repeatedly form a serial kinematic array, whereby the structural component or a partial region thereof is expanded or compressed in an arcuate or curved manner over a predetermined length or over the entire length of the seat or seat part by simultaneous expansion, in particular opening, spreading, and unfolding or vertical placement, or simultaneous compression, in particular folding, relaxing, folding or collapsing, of the array of expansion elements or rod elements.

One end of a respective expansion element or rod element, in particular in the form of a lath, bar, rib or plate, is connected to the outer surface element or movable link, in particular hinged thereto. The opposite end of the respective rod element is connected to, in particular hinged to, another outer surface element or another movable link.

Another embodiment provides that the substructure is coupled to one or more outer surface elements in such a way in terms of movement that the substructure changes its shape, in particular its volume, and moves, in particular expands, in particular struts or unfolds, or compresses, in particular contracts or folds, depending on the controlled force acting on one or more movable links of the substructure.

If the activation, in particular the simultaneous activation, of the movement of the expansion element or rod element is activated by means of the movable links and/or the outer surface elements, the entire column and thus the flexible structure or substructure expands or compresses. For activation, a kinematic force is applied, in particular to one or more outer surface elements and/or to one or more movable links.

The columns of expansion elements or rod elements may be scaled as desired, thus allowing expansion or compression and stability to be tailored to the intended use or desired application.

With regard to the seat part, in particular the backrest or seat part, this object is achieved according to the invention by a seat part comprising at least a support structure, a padding and/or a cover and in all the various embodiments the structural parts as described above, wherein at least the substructure is coupled to the padding and/or the cover in terms of movement. In a possible embodiment, the respective movable link is coupled in terms of movement to the padding and/or to the cover. In this case, the structural component can be arranged between the support structure and the padding and/or the cover and can form at least one subregion of the seat component or the entire seat component.

With respect to the seat, this object is achieved according to the invention by a seat comprising at least two seat parts which are movable relative to each other and wherein at least one movable seat part comprises a structural part as described in the various embodiments above, wherein the flexible structure of the structural part is movable to an expanded position or a compressed position when the movable seat part is moved relative to the other seat part.

If a structural component with an internal flexible structure as described before is used for a seat, in particular a vehicle or aircraft seat, wherein a sub-region of the seat or one of the seat components, such as a lumbar support or a side panel support, is formed by in particular a single piece of flexible structure, expansion or compression of in particular the single piece of flexible structure in the sub-region of the seat when adjusting the seat, for example from a sitting position to a lying position, may allow a corresponding support to be achieved, thus adapting to various requirements. For example, the flexible structure, in particular the sub-structure or sub-region thereof, may thus be activated and moved in such a way that the seat in the seated or comfortable position has more lateral support than in the recumbent or prone position. Alternatively, the flexible structure may form the entire surface of the seat. The expansion element or rod element can be arranged below the padding, in particular foam padding, and during the expansion in the direction of the foam padding, correspondingly moves, in particular stands or struts, in particular vertically, in particular in a curved or curved line and/or in a linear manner, below the foam padding and presses against the foam padding, so that a corresponding support is achieved. Alternatively, the expansion element or the column of rod elements can be integrated into the foam padding, in particular be arranged directly in the foam padding, and during the expansion move in the direction of the hair surface of the foam padding, in particular lie upright or spread apart, in particular vertically, to form a curve or an arc and/or in a linear manner.

In one possible embodiment, for example, at least one row of expansion elements or rod elements is provided in the region of a side panel support or lumbar support along the longitudinal extent of the seat, which side panel support or lumbar support moves relative to the seat, for example the back or seat portion, to provide sufficient support adjacent the padding to provide improved comfort for the seat user.

For example, at least one row of expansion elements or rod elements may be relaxed in the recumbent or prone position of the seat. In particular, the rod element is configured in such a way that in a compressed state, in particular in a folded or unfolded state, the rod element springs back in the expansion direction, for example in the Z direction. In the sitting or takeoff and landing position of the seat, the expansion element or rod element expands, in particular is deployed, stands, splays or deploys, and increases the support, for example in a side panel support and thus the lateral support and the comfort of the user.

In a possible embodiment, the expansion of the expansion element or rod element is achieved by adjusting the length compensation of the backrest relative to the foot part. Alternatively, an electric motor may be provided. The size, shape and configuration of the expansion element or rod element and its expansion coefficient may be scaled as desired.

The expansion elements or rod elements, which are distributed in various rows one above the other and/or adjacent to each other or lying on a plane, can form a three-dimensional plastic structure below or in the padding.

If a structural component with an internal flexible structure as described previously is used in a seat, in particular a vehicle or aircraft seat, wherein the entire seat is formed by a single piece of flexible structure with structural regions, for example for the backrest, the seat part and the foot supports, the expansion or compression of the single piece of flexible structure and thus the adjustment of the seat to the desired position can be controlled by the movement of the foot supports relative to the seat part and/or the movement of the backrest relative to the seat part. For example, if the foot supports (also referred to as foot pegs or foot extensions) are moved relative to the seat portion (also referred to as a cushion or a seating surface) to a comfort position or design position (e.g., to a position where the foot supports are at 90 degrees relative to the cushion), the compensation structure expands. Conversely, if the flexible structure is compressed to a recumbent position in which the foot support is disposed in a plane or at an angle of 0 ° with respect to the seat portion, the compensating structure compresses.

In another embodiment, the respective longitudinal elements, in particular the central piece or control piece, and the outer longitudinal elements or diamond outer surfaces may be divided to form the pivot points or bending points of the structural component. In other words: the longitudinal elements-the intermediate piece/control piece and the outer longitudinal element/diamond outer surface-form a longitudinal rod. In the region of the pivot point or bending point, the respective longitudinal element has a joint, in particular a solid-state joint. For example, the engagement member has a taper or notch on one side to form a rotational axis extending perpendicular to the longitudinal extent of the respective longitudinal element. Alternatively, the joint may also have tapers or notches on both sides.

For example, in the case of a structural component for a seat, the longitudinal elements are divided in the transition region between the backrest and the seat part or between the seat part and the foot support and are provided with joints, for example solid-state joints.

The path defined by the rotation axis or point may allow the flexible structure to expand if the longitudinal bars of the diamond are each disposed against each other at the pivot point or kink point. The pivot points or bending points of the linear expansion members, in particular the outer longitudinal elements of the lattice or the outer surfaces of the rhombi, are closer to the actual rotation axis or the actual rotation point of the flexible structure. The pivot point or bending point of the driving center piece or control piece is further away from the rotation axis or rotation point. Thus, the expansion of the lattice structure interacts with the movement of the foot support relative to the seat portion.

In one possible embodiment, the kinetic structural component is made of plastic, in particular by injection molding, stamping or 3D printing. This enables the manufacture of joints with very thin strips. The flexible structure made of plastic with the dynamics of the serial joint allows to achieve a long-lasting bending fatigue strength and a high tensile/compressive strength.

In particular, the flexible structure and/or sub-regions thereof may be made in the form of a flexible 3D plastic structure by injection moulding or 3D printing. The entire kinetic structure component with outer surface elements and a flexible structure arranged between the outer surface elements may also be manufactured by injection molding or 3D printing.

The surface element of the structural component is in particular configured in the form of a shell or a mat, for example in the form of a plate. The outer surface element may have a planar shape. Alternatively, the outer surface element may also have an ergonomic shape and be of planar design.

The advantages achieved by the invention are in particular that the flexible structure and thus the structural components are stable, in particular resistant to torsion, during expansion or compression. Furthermore, the expansion elements or rod elements arranged in series expand or compress simultaneously over the entire extension and/or sub-area of the structural part, thereby allowing variable different support of the user of the seat with respect to the surface. Here, the expansion or compression movement of the flexible structure and/or sub-region may be controlled and scaled.

The flexible columnar 3D configuration of the flexible structure or sub-regions thereof allows for the realization of complex structures that expand into curves or arcs in a manner that is easy to control and drive.

Furthermore, due to the different flexible configurations and shapes, the flexible structure allows regions of the flexible structure to expand or compress in different directions.

In the case of forming structural components of a chair having a foot support, a seat portion and a backrest, the foot support, seat portion and backrest and/or sub-regions thereof, such as the side panel support regions and the lordotic region, may change shape and/or size at different points as the flexible structure moves. Alternatively, separate drive means may be provided to control expansion or compression of the flexible structure accordingly.

Drawings

Embodiments of the present invention are explained in more detail with reference to the drawings. Wherein:

figures 1A to 1C schematically show an embodiment of the structural part with the covering in different positions of the seat in perspective view,

fig. 2A and 2B schematically show in cross-section an embodiment of a structural component having a flexible structure, being an array of expansion elements in an expanded state arranged in a meandering manner,

fig. 3 shows schematically in a sectional view an embodiment of a structural component with a flexible structure, which is an array of expansion elements in an expanded state arranged parallel to each other,

fig. 4 shows schematically in a sectional view an embodiment of a structural component with a flexible structure, which is an array of expansion elements arranged in a zigzag manner,

fig. 5 shows schematically in a sectional view an embodiment of a structural component with a flexible structure, which is a single column of expansion elements,

fig. 6 and 7 show schematically in cross-section an embodiment of a structural part with a flexible structure, which is a double row of expansion elements,

figures 8 to 10 show schematically in perspective an embodiment of a flexible structure for a structural component in the region of a pivot point or bending point between two structural regions that are pivotable relative to one another,

figure 11 schematically illustrates an embodiment of a flexible structure in a compressed state in a perspective view,

figure 12 schematically illustrates an embodiment of a flexible structure in a compressed state in a perspective view,

figures 13A-13E schematically illustrate a series of perspective views of a flexible structure during an expansion movement,

figures 14A and 14B schematically show an embodiment with layered filler in the bending point region in a cross-sectional view,

figures 15A to 15C schematically show the structural component with the filler in the bending point region and in different positions in side view,

figures 16A to 16C schematically show an embodiment of the packing in cross-section with wedge-shaped recesses and rod structures in the region of the bending points,

figures 17A and 17B show schematically in side view an embodiment of the packing with a wedge-shaped recess in the form of a notch on one side in the region of the bending point and with a rectangular bar structure,

figures 18A to 18E schematically show an embodiment of the packing in side view with an internal wedge-shaped recess and a triangular rod structure in the region of the bending point,

FIG. 19 shows schematically in a side view an embodiment of the packing with wedge-shaped recesses and bar structures in the region of the bending points and with cover elements on the packing, and

fig. 20 to 23 schematically show further exemplary embodiments of the flexible structure of the structural component in different views and positions.

Mutually corresponding parts are provided with the same reference numerals throughout the figures.

Detailed Description

Fig. 1A to 1C show an exemplary embodiment of a structural component 1 as a seat S in different positions P1 to P3 in a perspective view. The chair S comprises at least a backrest 2, a seat portion 3 and a foot support 4.

Position P1 illustrates seat S, for example, in a seating position having a generally upright back position, such as in a so-called TTL position. Position P2 shows, for example, seat S in a comfortable seating position, with backrest 2 reclined backwards and foot supports 4 reclined upwards. Position P3 shows, for example, seat S in a recumbent or prone position, with backrest 2 tilted substantially fully backward and foot supports 4 tilted substantially fully upward.

The structural component 1 is designed, for example, as a dynamic structural component 1 with different structural regions 1.1, 1.2. The structural component 1 comprises a flexible structure 5 with at least one degree of freedom F1, F2, in particular at least one translational degree of freedom F1, F2 and/or at least one rotational degree of freedom R1, R2.

The flexible structure 5 is here configured to compress or expand in an arcuate or curved manner, for example in the direction of the degrees of freedom F1 and/or F2 and the degrees of rotational freedom R1 and/or R2. Alternatively or additionally, the flexible structure 5 is configured to compress or expand in a linear manner, for example in the direction of the translational degree of freedom F1 or F2.

In the case of the seat S shown in fig. 1A to 1C, the flexible structure 5 extends over the entire seat length and forms a continuous surface from the backrest 2 to the seat part 3 up to the foot support 4. Alternatively, the flexible structure 5 may also extend only over the respective seat part-backrest 2 or seat part 3, so that the seat S is provided with two separate flexible structures 5.

The flexible structure 5 is at least in regions configured to extend to form an arch or curve KU. For example, the flexible structure 5 comprises at least one substructure 5.1, which substructure 5.1 extends, for example, along at least one of the two side plate supports 1.3 of the backrest 2, the seat part 3 and/or the foot support 4 and is configured to expand to form a curve KU. The flexible sub-structures 5.2 adjacent to the respective sub-structure 5.1 are configured to expand in a linear manner. The substructure/substructures 5.1 expand to form such a curve KU: which in the expanded state is at least regionally higher than the linearly expanded adjacent substructure/substructures 5.2. This makes it possible to provide lateral support for the user of the seat S in a simple manner.

The flexible structure 5 is a flexible structural element which forms a support for the filling 7. For example, the flexible structure 5 is designed as a single piece flexible structure element and is arranged below the padding 7.

In one possible embodiment, the kinetic structural part 1, in particular the flexible structure 5 and its substructures 5.1, 5.2, are made of plastic, in particular by injection molding, stamping or 3D printing. This makes it possible to produce joints with very thin webs. The flexible structure 5 made of plastic with parallel and/or series joint dynamics allows to achieve a long-lasting bending fatigue strength and a high tensile/compressive strength.

In particular, the flexible structure 5 can be designed, at least in one or more substructures 5.2, in the form of a flexible grid G, in particular a plastic grid, and can be produced by injection molding or 3D printing.

For example, the flexible substructures 5.2 may extend over the entire central region of the seat S, wherein adjacent flexible substructures 5.1 extend in the region of the side panel supports 1.3 or lumbar supports 1.4 of the seat S.

Furthermore, the flexible structure 5, in particular the respective sub-structure 5.1, 5.2, may be arranged and fastened to an associated support structure T, in particular a frame-like or plate-like or shell-like support structure T.

The cover a is designed as a surface element 6 which covers or surrounds the flexible structure 5 on the outside. The cover a includes a packing 7 as a lower portion and a cover member 8 as an upper portion, which covers the packing 7 at least on a surface side serving as a sitting/lying surface. The padding 7 is in particular a foam padding and can be designed, for example, as a flat foam mat or foam shell. Alternatively, the cover a can also be formed by only filling the cover element 8 with filler.

The cover a as the outer surface element 6 may cover or surround the flexible structure 5 on both the upper and lower sides. The upper side of the covering a has a first flexible, in particular filler-filled surface element 6.1. The getting-off of the covering a has a second flexible, for example plate-like or shell-like, surface element 6.2.

The one or more flexible substructures 5.1 are configured to absorb forces acting thereon, such as controlled compressive or shear forces, and optionally to transmit the forces during expansion or compression to change the volume, shape, size, in particular height, and/or position of the one or more flexible substructures 5.1, in particular to move the one or more flexible substructures 5.1 in a curved or arcuate and/or linear manner. In particular, the one or more flexible substructures 5.1 are placed upright or unfolded during expansion to form a curve KU or are folded or collapsed during compression.

Furthermore, the dynamic structural component 1 can be formed integrally from the outer flexible surface elements 6.1, 6.2 and the inner flexible structure 5, wherein the inner flexible structure 5 has a flexible substructure 5.1 and a flexible substructure 5.2, which flexible substructure 5.1 has an array of R0 expansion elements 5.3 with a horizontal rotation axis HD (fig. 2 to 7), and the flexible substructure 5.2 has a flexible grid G with rod joints with a horizontal rotation axis HD and a vertical rotation axis VD (fig. 1A to 1C).

Fig. 2A, 2B schematically show an embodiment of a flexible substructure 5.1 with an array of R0 expansion elements 5.3 in a cross-sectional view.

Fig. 2A schematically shows in a cross-sectional view a flexible substructure 5.1, for example for a side plate support 1.3. The expansion elements 5.3 arranged in series in the row R0 are placed or spread apart in the expanded state and form a curve KU. In one of the seating positions P1 or P2 of the seat S, the expansion element 5.3 is placed or spread substantially completely upright and forms a safe lateral support.

Fig. 2B shows the flexible substructure 5.1 in a partially compressed state, in a schematic sectional view, in which the expansion element 5.3 is folded or folded over. In the lying position P3 of the seat S, the expansion element 5.3 is partially folded or folded over or placed obliquely.

The expansion element 5.3 is arranged in a meandering manner between the upper flexible, in particular filler-filled, surface element 6.1 and the lower flexible surface element 6.2.

The flexible substructure 5.2 can be formed here by repeated occurrences of identical mechanical expansion elements 5.3, in particular rod elements, which are connected to form the row R0. The expansion elements 5.3 can have different lengths L, and therefore the expansion elements 5.3 arranged in the row R0 open in the expanded state in an arched or curved manner and form an arched or curved surface OF.

One end of the respective expansion element 5.3, in particular a strip-shaped or plate-shaped rod, is connected to the external and padded flexible surface element 6.1, in particular hinged thereto by means of a joint 5.4, in particular a solid-state joint. The opposite end of the respective expansion element 5.3 is joined to another outer flexible surface element 6.2, in particular hinged thereto by means of another joint 5.4, in particular a solid-state joint.

If the movements of the expansion elements 5.3 are activated synchronously, for example according to the arrow PF1, the entire column R0 and thus the flexible substructure 5.1 expands to form the curve KU.

The activation of the expansion element 5.3 can be forced in this case by a linear movement T1 or a rotational movement RB of the backrest 2 or another component of the seat S. In the case of a rotational movement RB of the backrest 2 relative to the seat part 3, the corresponding padding regions of the padding 7 move relative to one another in the region of the bending point KP.

The expansion elements 5.3 of the array R0 can be scaled as desired and thus the expansion or compression and the stability can be adapted to the intended use or desired application of the structural component 1.

Fig. 3 shows schematically in a sectional view an alternative embodiment of an expansion element 5.3 which is arranged in a row R0 and which is arranged parallel to one another in the expanded state.

Fig. 4 schematically shows an embodiment of the flexible substructure 5.1 in a sectional view, wherein the expansion elements 5.3 in the row R0 are configured in a Z-shaped form. Alternatively, the expansion element 5.3 can be designed in an L-shaped form. The expansion element 5.3 is arranged between the two flexible surface elements 6.1, 6.2, wherein the upper flexible surface element 6.1 is provided with a filling 7.

Fig. 5 shows schematically in a cross-sectional view the flexible substructure 5.1 according to fig. 4 in various expansion stages ST1 to ST4, from a top-down substantially compressed position to a fully expanded position in which the expansion element 5.3 is expanded to form a curve KU.

Fig. 6 and 7 show schematically in cross-section an embodiment of a flexible substructure 5.1 with double rows of DR expansion elements 5.3 without fillers 7.

Here, fig. 6 shows the flexible substructure 5.1 of fig. 7 in various expansion phases ST1 to ST4, from a top-down substantially compressed position to a fully expanded position in which the expansion element 5.3 is expanded to form a curve KU.

The double row DR stent 5.3 is formed by rows RH1, RH2 stent 5.3 arranged one above the other.

In other words: the expansion elements 5.3, which are distributed in rows RH1, RH2 that overlap one another and/or run parallel to one another or in a plane, for example rod elements, can form a three-dimensional plastic structure below the filling 7 or in the filling.

Furthermore, the expansion element 5.3 in all the previously described exemplary embodiments is designed to be spring-elastic. In particular, the recurring expansion element 5.3 is arranged between the outer flexible surface elements 6.1, 6.2 in such a way that it changes its shape and moves, in particular expands, in particular struts or unfolds, according to the acting and controlled force to form the curve KU. The expansion elements 5.3 which are repeated in the row R0 form a serial dynamics, according to which the structural component 1 or a partial region, for example the side panel support 1.3 and/or the lumbar support 1.4, is expanded or compressed in an arched or curved manner over its length by simultaneous expansion, in particular opening, spreading, unfolding or erection, or simultaneous compression, in particular folding, relaxing, folding or collapsing, of one or more rows R0 of expansion elements 5.3.

Fig. 8 to 10 show schematically in perspective an embodiment of a flexible structure 50 for a structural component 1, the structural component 1 having a pivot point or bending point KP between two structural regions 1.1 and 1.2, the two structural regions 1.1 and 1.2 being pivotable or tiltable relative to one another about the bending point KP.

The flexible structure 50 comprises a plurality of chain links 50.1, engaging members 50.2 and/or rod elements 50.3 which are connected to each other in an array R0 and/or in parallel in order to be compressed or expanded in at least one, in particular in at least two or more degrees of freedom F1 and F2.

In particular, the kinetic structural component 1 may be formed in one piece from the inner flexible structure 50. For example, the flexible structure 50 is a flexible grid G with a bar element 50.3 which is hinged to the longitudinal element 50.4 by means of a joint 50.2 having a horizontal axis of rotation HD in the region of the bending point KP and a vertical axis of rotation VD in the region of the hinge of the bar element 50.3.

Here, the flexible structure 50 may be formed by recurring mechanical bar elements 50.3, wherein the bar elements 50.3 are connected to form a grid G which expands or compresses in a linear manner.

The bar element 50.3 is for example provided in the form of a diamond. In particular, the recurring bar elements 50.3 are arranged between the longitudinal elements 50.4 in such a way that the grid G comprises rhombi-shaped portions R which are mirrored relative to one another along the longitudinal elements 50.4 and which change their shape and move, in particular expand linearly or compress linearly, in accordance with the acting and controlled forces. The respective diamond R is here formed by parallel and spaced longitudinal elements 50.4, which longitudinal elements 50.4 are connected to each other by a rod element 50.3, for example a planar strip, hinged on the longitudinal elements 50.4. The repeated presence of the rod elements 50.3 between the longitudinal elements 50.4 creates parallel and serial dynamics such that the structural part 1 expands linearly or compresses linearly.

One end of the respective rod element 50.3 or one end of the respective strip of the diamond R which is mirror image of each other is connected towards the centre to the central controllable longitudinal element 50.4.1 or to an intermediate element, in particular to a control element. The controllable longitudinal element 50.4.1 forms mirror image axes of the diamonds R that are mirror images relative to each other.

The opposite ends of the respective rod elements 50.3 of the diamond R, which are mirror images with respect to each other, are connected to the outer longitudinal element 50.4.2 or diamond outer surface, which in turn is connected to the next rod element 50.3 or outer surface AF forming the grid G, thereby forming the flexible structure 5.

The ends of the rod element 50.3 are here hinged to the respective longitudinal element 50.4. For this purpose, a joint 50.2 is provided at each end of the bar element 50.3. The engagement member 50.2 is, for example, a solid state engagement member 50.2.2 which is integrally formed with the longitudinal element 50.4, for example, by a taper or notch 50.2.1. By means of the joint 50.2, the rod element 50.3 can be pivoted or rotated relative to the respective longitudinal element 50.4 about a vertical rotational axis VD.

Since the diamond outer surfaces of the bar elements 50.3, i.e. the outer longitudinal elements 50.4.2 of the diamonds R, expand linearly, a plurality of diamonds R may be connected to their outer longitudinal elements 50.4.2 to form an expansion grid G. The diamond-shaped portions R may be arranged adjacent to each other in a column in the longitudinal extent and in the transverse extent of the structural component 1.

If the grid G, and thus the flexible structure 50, expands, the controllable longitudinal element 50.4.1, and thus the corresponding intermediate piece of the diamond R, moves 90 ° to expand. If the movement of the intermediate piece is activated, the entire grid G and thus the flexible structure 50 will expand or compress.

The column R0 and thus the grid G can be scaled as desired and thus the expansion or compression and stability can be adapted to the intended use or desired application of the structural component 1. Thus, the flexible structure 50 may be used not only as part of the seat S, but also for other components, such as panels and armrests.

If the structural part 1 with the interior and the previously described flexible structure 50 is used for a seat S, in particular a vehicle or aircraft seat, the entire seat S is formed by a single-piece flexible structure 50 with structural regions 1.1, 1.2 (for example for the seat part 3 and the foot supports 4), so that the expansion or compression of the single-piece flexible structure 50 and thus the adjustment of the seat S to the desired positions P1 to P3 can be controlled by the movement of the foot supports 4 relative to the seat part 3 (as shown in fig. 2 to 4) and/or the movement of the backrest 2 relative to the seat part 3.

For example, the flexible structure 50 is deployed if the foot support 4 (also referred to as a foot peg or foot extension) is moved relative to the seat portion 3 (also referred to as a cushion or seating surface) from a position P1, such as a seating position in which the foot support 4 is disposed at a 90 degree angle relative to the seat portion 3. That is, as shown in fig. 8, the diamond R is fully expanded and opened.

Conversely, if the flexible structure 50 is placed in a position P2 or P3 (a comfortable sitting position or recumbent position, respectively, in which the foot supports 4 are disposed at an angle of 45 ° or in a plane or at an angle of 0 ° with respect to the seat portion 3), the flexible structure 50 is compressed. That is, as shown in fig. 9 to 10, the diamond R is partially compressed and closed. As shown in fig. 11 and 12, when the flexible structure 50 forms a continuous flat surface, the diamond R is completely closed.

The respective longitudinal element 50.4, in particular the controllable longitudinal element 50.4.1, and the outer longitudinal element 50.4.2 are divided to form the bending point KP of the structural element 1. In other words: the longitudinal elements 50.4 form longitudinal rods. In the region of the bending point KP, the respective longitudinal element 50.4 has a joint 50.2, in particular a solid-state joint. For example, the joint 50.2 has a taper or notch 50.2.1 on one side to form a horizontal axis of rotation HD at the bend point KP, which axis extends perpendicular to the longitudinal extent of the respective longitudinal element 50.4.

For example, the longitudinal element 50.4 in the structural component 1 for the seat S is divided and provided with an associated joint 50.2, for example a solid-state joint, in the transition region between the backrest 2 and the seat part 3 or between the seat part 3 and the foot support 4.

The path defined by the horizontal rotation axis HD may allow the flexible structure 50 to expand or compress if the longitudinal rods or elements 50.4 of the diamond R are each disposed against each other at the bending point KP. The bending points KP of the linear expansion sections, in particular the diamonds R and the outer longitudinal elements 50.4.2 of the grid G, are closer to the actual horizontal rotation axis HD of the flexible structure 50.

The pivot point or bending point KP of the controllable longitudinal element 50.4.1 is further away from the horizontal rotation axis HD. Thus, the expansion of the flexible structure 50 and the grid G interacts with the movement of the foot support 4 relative to the seat portion 3.

For controlling the controllable longitudinal element 50.4.1, it may be provided to individually drive such 9 to correspondingly control the movement of the controllable longitudinal element 50.4.1, and thus the expansion or compression of the flexible structure 50.

Fig. 11 and 12 schematically illustrate the flexible structure 50 in a perspective view in a compressed state, in which state the flexible structure 50 forms a substantially continuous flat surface. The diamond-shaped part R is substantially closed and the bar element 50.3 mounted in a hinged manner is arranged substantially parallel to the longitudinal element 50.4.

In fig. 11, the joint 50.2 with the horizontal rotation axis HD at the bending point KP is designed as a solid-state joint 50.2.2 with a notch 50.2.1. In fig. 12, the joint 50.2 at the respective bending point KP is designed as a conventional rotary joint 50.2.3.

Fig. 13A to 13E schematically show a series of perspective views of the flexible structure 50 during the expansion movement from a fully compressed state of the diamond R, in which the structural areas 1.1 and 1.2 form substantially flat surfaces, to a fully expanded state of the diamond R, in which the structural areas 1.1 and 1.2 are arranged at an angle of 90 ° with respect to each other.

Fig. 14A to 14B schematically show an embodiment of the packing 70 in a sectional view.

The filler 70 is divided into a plurality of layers S1 to Sn in the region of the bending point or the bending point KP.

Layers S1 to Sn in the region of the bending point are formed, for example, by openings 11 which are introduced into filler 70 and extend transversely to the longitudinal extent of filler 70 through filler 70 and parallel to bending line 10 of filler 70. The through opening 11 is of slit-shaped design.

Layers S1 to Sn are separated from one another in the region of bending point KP by through opening 11. In other words: in the region of the bending point KP, the layers S1 to Sn are not connected to one another. This makes it possible in a simple manner to achieve that the respective layers S1 to Sn can expand or compress around their respective lengths in the event of a bending or buckling of the filler 70 at the buckling point KP. The compression of the respective layers S1 to Sn is effected away from the bending point KP, as indicated by the arrow PF1 in fig. 14A.

As shown in fig. 14B, the expansion of the respective layers S1 to Sn is effected according to the arrow PF2 towards the bending point KP. Here, the expansion and compression have no effect on the surface of the filler.

Further, the lengths L1 through Ln of the layers S1 through Sn differ laterally in the longitudinal extent of the filler 70 and, in turn, relative to the bend line 10. For example, layer Sn, which is furthest from bend point KP and thus bend line 10, has a maximum length Ln in the longitudinal extent. The length Ln-1 to L1 of each of the other layers Sn-1 to S1 is shortened to the bending point KP. Here, the size of the respective lengths L1 to Ln of the layers S1 to Sn may additionally depend on the thicknesses D1 to Dn of the respective layers S1 to Sn. Alternatively, all layers S1 to Sn may have the same thickness. In another embodiment, all layers S1 to Sn have the same width, in particular the same width as the filler 70.

Furthermore, the horizontal rotation axis HD of the packing 70 may be displaced onto the surface of the packing. This does not lead to excessive compression or expansion of the foam of the padding 70 or of the cover element 8 arranged on the padding 70.

This configuration of the filler 70 with a plurality of layers S1 to Sn in the region of the bending point makes it possible in a simple manner to enable these layers S1 to Sn to expand during bending of the filler 70 without affecting the surface of the filler 70. In particular, in the case of a plurality of foam fillers which divide the layers S1 to Sn in the region of the bending point, the foam is not compressed or compressed at the bending point KP. Conversely, the individual layers S1 to Sn are shifted or displaced in such a way that the padding surface and/or the cover element 8 do not bow or fold and the comfort is improved. Therefore, the bending or buckling of the filler 70 may be independent of the horizontal rotation axis HD and no compression or crushing occurs.

Fig. 15A to 15C schematically show the structural component 5 with the filling 700 in different positions P1 to P3 in side view. In the region of the bending point KP, the filler 700 has the above-described layers S1 to Sn, which are separated from one another by the through openings 11.

Fig. 16A to 16C in each case show schematically in side view an embodiment of a packing 700 in different positions P1 to P3.

The packing 700 has a wedge-shaped recess 13 in the region of the bending or bending point KP, in which the flexible rod structure 12 is arranged.

Fig. 16A shows the padding 700 in position P1 of the seating position of the seat S. The flexible rod structure 12 is compressed.

The padding 700 is designed in particular as a single piece and has, for example, a padding region 7.1 for the seat part 3 and an adjacent padding region 7.2 for the foot support 4. The two adjacent flat packing areas 7.1 and 7.2 can be displaced, in particular tilted or bent, relative to one another in the adjacent area AB about the bending point KP. The bending point KP of the padding 700 is here located in particular in the knee region of the user.

In this case, if the mutually adjacent padding regions 700.1 and 700.2 are arranged at an angle α of, for example, approximately 90 ° relative to one another in position P1, i.e. in the sitting position of the seat S, a strong overstretching of the padding 700, in particular of the foam of the padding 700, and of the covering element 8 takes place in the knee region and therefore in the adjacent region AB between the two padding regions 7.1 and 7.2, due to the thickness of the padding 700. Furthermore, the radius in the knee region may be too large due to the foam thickness.

In order to obtain stability and static properties of the padding 700 in the region of the bending point, a bar structure 12, in particular a plastic bar, is integrated in the region of the wedge-shaped recess 13, for example arranged inside or resting on it, to support the relative movement of the padding regions 700.1, 700.2. Fig. 16A to 16C and 17A to 17B show the resting arrangement of the bar construction 12 in a wedge-shaped recess 13 in the packing 700, which is open on one side.

Fig. 18A to 19 show the internal arrangement of the rod arrangement 12 in the through opening 11 of the packing 700.

At position P1, the rod structure 12 specifies a bending point KP for the padding 700, padding pads, in particular foam pads, and brings the horizontal rotation axis HD of the flexible structure 5 as close to the surface as possible.

To cope with this, the packing 700 has a wedge-shaped recess 13 below the bending point KP, which is shown partially open in fig. 16B and fully open in fig. 16C. In these positions P2 and P3, the rod structure 12 is partially or completely stretched or expanded, as a result of which the padding 700, in particular foam, retains its shape as much as possible and at the same time remains stable in the direction of stretching.

To this end, the flexible rod structure 12 is formed from a flexible plastic material, such as polypropylene.

In fig. 16B, adjacent padding areas 700.1 and 700.2 are disposed at an angle α of greater than 90 ° relative to each other and are therefore in position P2, the reclined seating position of seat S. The flexible rod structure 12 is partially expanded or stretched and the wedge-shaped recess 13 is correspondingly partially opened.

In fig. 16C, adjacent padding areas 700.1 and 700.2 are disposed at an angle α of about 180 ° relative to each other, and are therefore in position P3, i.e. the recumbent or prone position of seat S, and form a flat surface. The flexible rod structure 12 is fully expanded and the wedge-shaped recess 13 is correspondingly fully opened.

The size of the wedge-shaped recess 13 and its angle a thus vary with respect to the padding region 700.2 of the foot support 4 and with respect to the movement of the padding region 700.1 of the seat portion 3.

The flexible rod structure 12 is formed, for example, in a lattice-like form (fig. 16A to 16C), a diamond-like form (fig. 17A to 17B), or a wing-like form formed by a plurality of links, joints, and rods. The joint is in particular a solid-state joint. In the position P1 where the flexible rod structure 12 is compressed, the links and rods of the rod structure 12 are adjacent to and parallel to each other as shown in FIG. 16A. At positions P2 and P3, the flexible rod structure 12 is partially or fully stretched or expanded and the flexible lattice also opens to support the region of the bending point.

Here, the wedge-shaped recess 13 may be introduced into the packing 700 as a notch on one side, as shown in the embodiment in fig. 16A to 17B.

In another embodiment, the parameters and properties of padding 700, flexible structure 5, foam thickness, design and radius are freely scalable and adjustable.

The cover element 8 may be connected to the flexible structure 5 and held thereon by means of a separate opening, not specifically shown, in the padding 700.

Fig. 17A and 17B show schematically in side view an embodiment of a packing 700 in a partially compressed state or in a stretched or expanded state, which in the region of the bending point has a wedge-shaped recess 13 in the form of a notch on one side and a rectangular, in particular diamond-shaped rod structure 12.

Fig. 18A to 18E show schematically in a side view an embodiment of a packing 700 with an inner wedge-shaped recess 13 in the region of the bending point and with a triangular rod structure 12 in different positions P1 to P3, wherein the positions P1 to P3 are from fully compressing the rod structure 12 (fig. 18A) to fully extending or expanding the rod structure 12 (fig. 18E). In this case, the wedge-shaped recess 13 is introduced as a through opening with a triangular cross section into the packing 700 in the region of the bending point. The bar construction 12 is designed as a flat single bent bar, for example a spring bar or a metal bar.

Fig. 19 shows a schematic side view of a packing 700 with an internal wedge-shaped recess 13 and a rod structure 12 in the region of the bending point, and a cover element 8 on the packing 700.

Fig. 20 to 23 show further exemplary embodiments of flexible structures 500 for a structural component 1 schematically in various views, the structural component 1 having a pivot point or bending point KP between two structural regions 1.1 and 1.2, which can be pivoted or tilted relative to one another about the bending point KP.

The flexible structure 500 comprises a plurality of links 500.1, engagers 500.2 and/or a rod element 500.3 coupled to each other in terms of movement so as to compress or expand in at least one, in particular in at least two or more degrees of freedom F1, F2, R1 and/or R2.

In particular, the kinetic structural component 1 may be formed in one piece from the flexible structure 500. For example, the flexible structure 500 is a flexible grid G with a bar element 500.3 which is articulated on a chain link 500.1, in particular a longitudinal element 500.4, by means of a joint 500.2 which has a horizontal axis of rotation HD in the region of a bending point KP and a vertical axis of rotation VD or an oblique axis of rotation D in the region of the articulation of the bar element 500.3.

Here, the flexible structure 500 may be formed by recurring mechanical bar elements 500.3, wherein the bar elements 500.3 are connected to form a grid G that may be linearly expanded or compressed.

For example, the bar element 500.3 is provided in a diamond form. In particular, the recurring bar elements 500.3 are arranged between the longitudinal elements 500.4 in such a way that the grid G forms mutually mirror-image rectangles, in particular diamonds R, which change their shape and move, in particular expand linearly or compress linearly, depending on the acting and controlled forces, in the partially or fully expanded position along the longitudinal elements 500.4. The respective rhombuses R are here formed by parallel and spaced longitudinal elements 500.4, which are connected to each other by a bar element 500.3, for example a planar strip, hinged on the longitudinal element 500.4. The repeated presence of the rod elements 500.3 between the longitudinal elements 500.4 creates parallel and serial dynamics, with the result that the structural part 1 expands linearly or compresses linearly.

One end of the respective rod element 500.3 or one end of the respective slats of the mutually mirrored diamond-shaped portions R is connected towards the center to the central controllable longitudinal element 500.4.1 or an intermediate element, in particular a control element. The controllable longitudinal element 500.4.1 forms mirror axes of the mutually mirror image diamonds R.

The opposite ends of the respective rod elements 500.3, which mirror each other in a diamond R, are connected to the outer longitudinal element 500.4.2 or the diamond outer surface, which in turn is connected to the next rod element 500.3 or the outer surface AF forming the grid G, thus forming the flexible structure 5.

Here, the ends of the lever element 500.3 are hinged to the respective longitudinal element 500.4. For this purpose, a joint 500.2 is provided at each end of the bar element 500.3. The splice 500.2 is, for example, a solid state splice 50.2.2 that is integrally formed with the longitudinal member 500.4, for example, by a taper or notch 50.2.1. By means of the joint 500.2, the bar element 500.3 can be pivoted or rotated relative to the respective longitudinal element 500.4 about a vertical rotational axis VD or an inclined rotational axis D.

In particular, in the bending point KP, a multi-piece rotary joint 500.2.3 may be provided as the joint 500.2.

Since the diamond outer surfaces of the bar element 500.3, i.e., the outer longitudinal elements 500.4.2 of the diamonds R, expand linearly, a plurality of diamonds R may be connected to their outer longitudinal elements 500.4.2 to form an expansion grid G. Here, the diamond-shaped portions R may be arranged adjacent to each other in a column in the longitudinal extent and in a lateral extent of the structural component 1.

If the grid G, and thus the flexible structure 500, is expanded, the controllable longitudinal element 500.4.1, and thus the corresponding intermediate piece of the diamond R, is moved by 90 ° to expand. If the movement of the intermediary member is activated, the entire grid G and thus the flexible structure 500 is expanded or compressed.

The diamonds R and thus the grid G can be scaled as desired, thus allowing the expansion or compression and stability to be adapted to the intended use or desired application of the structural component 1.

If the structural component 1 with the interior and the previously described flexible structure 500 is used for a seat S, in particular a vehicle or aircraft seat, in which the entire seat S is formed by a single-piece flexible structure 500 with structural regions 1.1, 1.2 (for example for the seat part 3 and the foot supports 4), the expansion or compression of the single-piece flexible structure 500 and thus the adjustment of the seat S to the desired positions P1 to P3 can be controlled by a movement of the foot supports 4 relative to the seat part 3 (as shown in fig. 2 to 4) and/or a movement of the backrest 2 relative to the seat part 3.

Fig. 20 shows by way of example the lying position in which the flexible structure 500 is compressed, by means of the position P1. The flexible structure 500 forms a substantially continuous planar surface. The diamond R is substantially closed and the hingedly mounted bar element 500.3 is disposed substantially parallel to the longitudinal element 500.4.

Fig. 21 and 22 show a partially expanded position P2 or P3, respectively, in which the sub-structures 5.1, 5.2 of the flexible structure 500 are tilted or more tilted with respect to each other. Fig. 23 shows the flexible structure 500 in a fully expanded position and in a position P4 in which the sub-structures 5.1, 5.2 are arranged at an angular range of 85 ° to 90 ° with respect to each other. In particular, in case the substructures 5.1, 5.2 are arranged at 90 ° with respect to each other, the bar element 500.3 is substantially perpendicular to the longitudinal element 500.4.

The respective longitudinal element 500.4, in particular the controllable longitudinal element 500.4.1, and the outer longitudinal element 500.4.2 are divided to form the bending point KP of the structural element 1. In other words: the longitudinal member 500.4 forms a longitudinal rod. In the region of the bending point KP, the respective longitudinal element 500.4 has a joint 500.2, in particular a solid-state joint. For example, the joint 500.2 has a taper or notch 500.2.1 on one side to form a horizontal axis of rotation HD at the bend point KP, which axis extends perpendicular to the longitudinal extent of the respective longitudinal element 500.4.

For example, in the case of the structural component 1 for the seat S, the longitudinal element 500.4 is divided in the transition region between the backrest 2 and the seat part 3 or between the seat part 3 and the foot support 4 and is provided with an associated joint 500.2, for example a solid-state joint 500.2.2.

The path defined by the horizontal axis of rotation HD may allow the flexible structure 500 to expand or compress if the longitudinal rods or elements 500.4 of the diamond R are each disposed against one another at the bend point KP. The bending points KP of the linear expansion sections, in particular the diamonds R and the outer longitudinal elements 50.4.2 of the grid G, are closer to the actual horizontal rotation axis HD of the flexible structure 500.

The pivot point or bending point KP of the controllable longitudinal element 500.4.1 is further away from the horizontal rotation axis HD. Thus, the expansion of the flexible structure 500 and thus of the grid G is made to interact with the movement of the foot support 4 relative to the seat part 3.

For controlling the controllable longitudinal element 500.4.1, a separate drive means 9 may be provided to control the movement of the controllable longitudinal element 500.4.1, and thus the expansion or compression of the flexible structure 500, respectively.

List of reference numerals

1 structural component

1.1, 1.2 structural regions

1.3 side plate support

1.4 lumbar support

2 back support

3 seat part

4 foot support

5. 50, 500 flexible structure

5.1, 5.2 Flexible substructure

5.3 expansion element

5.4 joints

50.1, 500.1 chain link

50.2, 500.2 joint

50.2.1, 500.2.1 notch

50.2.2, 500.2.2 solid state joints

50.2.3, 500.2.3 Rotary Joint

50.3, 500.3 bar element

50.4, 500.4 longitudinal element

50.4.1, 500.4.1 controllable longitudinal element

50.4.2, 500.4.2 outer longitudinal element

6 surface element

6.1, 6.2 Flexible surface elements

7. 70, 700 Filler

700.1, 700.2 Filler region

8 cover element

9 drive device

10 line of bending

11 through hole

12-rod structure

13 wedge-shaped recess

A cover

AB Adjacent region

AF outer surface

D tilting axis of rotation

DR double row

G grid

F1 and F2 degree of freedom

HD horizontal rotation axis

KP bending point

KU curve

Length of L

OF surface

Position P1 to P3

PF1 and PF2 arrows

R diamond shaped part

Columns R0, RH1 and RH2

Degree of freedom of rotation of R1 and R2

RB rotational movement

S chair

ST1 to ST4 expansion steps

S1 to Sn layer

T-shaped supporting structure

T1 Linear movement

VD vertical axis of rotation