WO2023061748A1

WO2023061748A1 - Seating furniture

Info

Publication number: WO2023061748A1
Application number: PCT/EP2022/076849
Authority: WO
Inventors: Armin Sander
Original assignee: Armin Sander
Priority date: 2021-10-13
Filing date: 2022-09-27
Publication date: 2023-04-20
Also published as: DE102021211566A1

Abstract

The invention relates to an item of seating furniture (2) comprising a base (4), to which two flexibly resilient transverse struts (8) are attached and, with respect to which two flexibly resilient transverse struts, two flexibly resilient longitudinal struts (20) are attached so as to be offset to the front in an orientation direction (6). The free ends (10), remote from the base (4), of the transverse struts (8) are offset to the front in the orientation direction (6) with respect to the free ends (18), remote from the base (4), of the longitudinal struts (20). The item of seating furniture (2) comprises a flexibly loose covering (22), which is fastened to the free ends (10, 18), remote from the base (4), of the transverse struts (8) and the longitudinal struts (20) such that a well (24) is formed that forms a seating surface (28) and a backrest (26). A retaining strut (34) is held on the well (24), by means of which retaining strut the seating surface (28) and the backrest (26) are separated, and which retaining strut is held on the longitudinal struts (20) by means of a tape (36).

Description

WO 2(123/(161748 item. Nuremberg PCT/EP2022/076849

1

P210465P-RF/SES/CH

Description

seating furniture

The invention relates to seating furniture. The seating furniture includes a foot to which two transverse struts and two longitudinal struts are connected.

A piece of seating furniture is generally understood to mean a piece of furniture on which at least one user can sit. Basically, this includes chairs, office chairs (both in a version as a swivel chair and as a conference chair) and armchairs (also known as lounge furniture). Such seating furniture usually has a seat and a backrest set at an angle to it, against which the user can lean. The piece of seating furniture stands on a base by means of a foot, the foot comprising, for example, a turnstile with a number of castors or a number of chair legs.

For example, the backrest is completely rigid so that robustness is increased. To increase comfort, however, a rigid support structure of the backrest is covered with foam, which is why the user does not get injured when leaning against it. So that there is sufficient support for the user, there is usually a mechanism or at least defined contact points of a mechanism on the user's back, such as a lumbar support. This is used to provide selective support for the spine and/or back muscles. This means that the chair can also be used over a longer period of time without getting tired.

It is also usually possible by means of the mechanism to incline the backrest in relation to the seat and to adapt it to the current needs. For this purpose, the mechanism usually has several joints and is located at the foot of the Seating furniture rigidly attached. In other words, the mechanism serves to attach the seat and the backrest to the foot. However, such mechanisms are comparatively heavy, so that the weight of the chair is increased. As a result, repositioning of the seating furniture is made more difficult. The production of such mechanisms is also comparatively expensive.

The invention is based on the object of specifying a particularly suitable piece of seating furniture in which comfort is advantageously increased and/or weight is reduced.

According to the invention, this object is achieved by the features of claim 1. Advantageous developments and refinements are the subject of the subclaims.

The seating furniture is, for example, a chair, such as a kitchen chair, a conference chair, an office chair, a swivel chair, a conference chair, or an armchair, for example. The piece of seating furniture has a seat that is suitable, in particular provided and set up, so that a user, who is also referred to as a user, can sit on it. Furthermore, the item of seating furniture includes a backrest, which serves in particular to stabilize and/or lean on the back of the user who is using the item of seating furniture and is sitting on the seat surface of the item of seating furniture. The backrest is particularly suitable for this purpose, preferably provided and configured. If the user sits on the seat as intended and leans against the backrest, he looks in an orientation direction of the chair. Consequently, the seat surface is located in front of the backrest in the direction of orientation, and the backrest, or at least its projection in the horizontal plane, is arranged essentially perpendicularly to the direction of orientation.

In addition, the piece of seating furniture includes a foot, which serves to stabilize the backrest and the seat surface with respect to the ground. The foot is suitable for this, in particular provided and set up. Appropriately, the foot represents the only part of the seating furniture, by means of which the contact of the Seating furniture is created with the subsoil. In other words, in the intended state, the foot rests on the ground, whereas the seat surface and the backrest are expediently spaced from the ground. The foot has, for example, a foot frame which, in the intended state, rests flat on the ground. In this way, stability is increased. As an alternative to this, the foot comprises a number of legs, in particular chair legs. In a further alternative, the base has a star base, which has cantilever arms arranged in a star shape, at each end of which a roller is held. This makes it possible to move the seating furniture. The star base in turn is expediently attached at the end to a chair column, expediently at the lower end.

The piece of seating furniture thus has a front side and a rear side (rear side). The rear side is in this case defined in particular by the backrest, and the line of sight of the user, if he is sitting on the seating furniture as intended, is directed from the rear side to the front side, ie from back to front. Thus, the user's viewing direction is the same as the orientation direction, and the seating furniture is limited in the orientation direction with the front and the rear. The seating furniture item also has a lower and an upper side, with the lower side facing the ground in particular if the seating furniture item is used as intended. The top side is directly above it. Thus, a top-to-bottom direction is perpendicular, and in particular, it is perpendicular to the orientation direction. These direction definitions are used in particular below.

The piece of seating furniture also has two flexurally elastic transverse struts and two flexurally elastic longitudinal struts. In other words, the transverse struts and the longitudinal struts, which are also referred to below as the struts, are designed to be resilient, and when acted upon by a force, which occurs in particular when the chair is used as intended, they are elastically deformed. For example, the struts are made of a glass fiber reinforced plastic or at least include glass fibers. Alternatively, the Struts, or at least one or more of them, made of wood or spring steel.

The transverse struts and the longitudinal struts are connected to the base, in particular at one of the respective ends. For example, additional fastening means are provided between the struts and the foot, such as a screw or bearing shells. As an alternative to this, the struts or a part of the struts are connected to the foot in a materially bonded manner, for example by means of gluing, or they are created from a common component.

The longitudinal struts are offset forward in the orientation direction with respect to the transverse struts. The two longitudinal struts are expediently not offset from one another in the direction of orientation. Alternatively or in combination with this, the transverse struts are also connected to the foot so that they are not offset in relation to one another. In this way, production is simplified and, in particular, the functioning of the seating furniture item is improved. The free ends of the transverse struts are offset forward in the direction of orientation with respect to the free ends of the longitudinal struts, so that the transverse struts cross the longitudinal struts.

Furthermore, the piece of seating furniture includes a covering, by means of which the seat surface and the backrest are formed. For example, only the seat surface and the backrest are formed by means of the covering, or the covering forms other components of the seating furniture item. The covering is limp and fastened to the free ends of the transverse struts and the longitudinal struts facing away from the foot. The covering is expediently stretched, so that the transverse struts and longitudinal struts are prestressed by means of the covering. The covering is also kept at least partially taut by means of the transverse struts and longitudinal struts due to their flexible design. For example, the covering is attached directly to the free end, or the free ends are curved, for example, and the covering has pockets or the like that are slipped over the free end. Thus, the covering is stretched using the free ends. Here, the attachment and in particular the shape and configuration of the covering is such that a hollow is formed, ie in particular a hollow-like pocket, by means of which the seat surface and the backrest are formed. In order to use the seating furniture as intended, it is therefore necessary for the user to sit down in the hollow. Due to the flexurally elastic configuration of the transverse struts and the longitudinal struts, the flexible covering is stretched particularly tautly, so that seating comfort is increased. In particular, the seat surface is adjacent to the transverse struts, so that the part of the covering attached to the transverse struts forms part of the seat surface and the part of the covering attached to the longitudinal struts forms the or part of the backrest. The free ends of the transverse struts are preferably offset downwards in the vertical direction in relation to the free ends of the longitudinal struts, so that the backrest protrudes over the seat surface in the vertical direction.

A retaining strut is also held at the hollow, by means of which the seat surface and the backrest are separated. In other words, the covering is divided into the seat surface and the backrest by means of the holding strut. In particular, the retaining strut is arranged at least partially perpendicular to the direction of orientation for this purpose. The retaining strut is held on the longitudinal struts, namely by means of a strap. Preferably, the support strut is spaced from the longitudinal struts. For example, there is only one such band or several such bands, with each of the longitudinal struts being assigned a corresponding band, for example. The band or bands are expediently stretched taut so that the shape of the cavity is always the same, even when it is not under load. The band or bands are preferably designed to be pliable and are made, for example, from a rope or rubber. In this way, the retaining strut is movably mounted with respect to the cross strut.

Due to the flexurally elastic configuration of the transverse struts and the longitudinal struts, the hollow yields resiliently under a load that occurs when the user sits down in the hollow, which makes it easier for the user to sit down on the piece of furniture. As a result, comfort is increased for the user. Depending on the seating position of the user, the free ends of the struts are towards or towards each other moved away from each other so that a depth of the pit is changed. Thus, the angle between the seat and the backrest is changed according to the sitting position, which increases comfort for the user. Because of the retaining die, the size of the seat surface and the backrest is not changed, or at least the backrest is not moved excessively away from the longitudinal struts. As a result, a perceived security for the user is increased. Comparatively weight-intensive mechanics are not required to achieve these advantages, which is why the weight of the seating furniture item is reduced. In addition, it is possible in this way to provide a comparatively filigree piece of seating furniture, so that the visual impression is improved. Manufacturing costs are also reduced due to the lack of mechanics.

For example, the transverse struts and/or longitudinal struts are formed in a straight line or, for example, curved, so that the spring effect of the struts is improved. In other words, the transverse struts and/or longitudinal struts are preferably pretensioned. It is thus possible to keep the covering comparatively taut even in the unloaded state, which on the one hand improves the visual impression. On the other hand, sitting in the hollow is simplified for the user.

Particularly preferably, the connection points of the cross braces on the base are offset towards one another, and for example the cross braces are connected to a common point on the base. Suitably, the free ends of the cross struts that are spaced apart from the foot are offset from one another, so that the cross struts run at an angle to one another with respect to the orientation direction and the vertical direction. In other words, a V-shape is formed by means of the cross braces. The spaced-apart free ends of the transverse struts are particularly preferably connected to one another by means of a further strut and are thus stabilized by means of this. In this way, a front edge of the seat surface is also stabilized and, for example, formed by means of the additional strut. For example, the further strut is in one piece with the struts and is therefore formed on them, which simplifies production. As an alternative to this, the further strut is manufactured separately from these and, for example, made of a rigid material so that a deformation of the further strut is excluded when the seating furniture is used.

The ends of the longitudinal struts connected to the foot are expediently offset away from one another. In this case, the connection points of the transverse strut on the foot are expediently offset relative to one another, so that the transverse struts and longitudinal struts can cross without any problems. Suitably, the free ends of the longitudinal struts facing away from the foot are offset towards one another, so that the longitudinal struts have an increased length, which improves a spring effect. A V-shape is thus also formed by means of the longitudinal struts.

The covering is in particular a textile fabric and, for example, a net or preferably a fabric. In this way, it is easier to adapt the covering to the shape of the transverse struts and longitudinal struts, and production costs are reduced. It is also possible to use a wide variety of types of covering and thus adapt the seating furniture to the corresponding requirements. For example, the covering is comparatively elastic, so that a spring effect and consequently comfort are increased. However, it is also possible to select a comparatively stiff or unyielding covering, so that the cavity is maintained at least partially due to the choice of material for the covering, regardless of the flexurally elastic configuration of the transverse struts and longitudinal struts. In addition, in this way the cavity is deformed only comparatively slightly when it is used. In this way, a comparatively long, fatigue-free use of the chair is made possible. In a further alternative, the covering is formed at least partially by means of leather, which increases robustness. For example, the covering is designed so that the user can sit directly on it. As an alternative to this, the covering is at least partially provided with padding, by means of which the hollow is at least partially lined. In this way, comfort is further increased. The retaining strut is inserted into the cavity, for example, and is thus partially stabilized by means of this cavity. In other words, the covering is located between the longitudinal struts and the retaining strut. As a result, robustness is increased, while manufacturing is simplified. In addition, a comparatively large area of the covering is held directly on the longitudinal struts by means of the strap in this way by means of the retaining strut. In this way, the shape of the hollow is further stabilized and the formation of folds in the covering is avoided. As an alternative to this, the retaining strut is attached to the side of the covering facing the longitudinal struts, for example by means of loops, or the retaining strut is sewn on there. In a further alternative, a pocket or the like is fastened to the covering on the side facing the longitudinal struts, within which the holding strut is inserted. Due to the positioning of the retaining strut on the side facing the longitudinal struts, the user is not disturbed by it and can use the backrest and the seat comparatively fully.

For example, the support strut is essentially straight, which facilitates manufacture. However, the retaining strut is particularly preferably bent in a U-shape. As a result, the boundary of the seat and/or backrest is also at least partially U-shaped, or they are partially U-shaped, so that in this area the shape of the covering is at least partially adapted to the shape of the user's back or vessel. which increases comfort.

The retaining strut is particularly preferably arranged horizontally, ie when the chair is in the intended state, for example when the user is not sitting on it. As a result, the seat surface, which is preferably also arranged essentially horizontally or at least parallel to the support strut, is also delimited in a U-shape at its rear end in the direction of orientation, so that the seat surface imitates the shape of the user's buttocks. On the other hand, the cross section of the backrest in the horizontal plane, at least in the area of the seat, is U-shaped and thus takes up the curve of the back. Consequently the backrest partially nestles against the back of the user and stabilizes the back laterally. As a result, comfort is further increased.

In an alternative, an armrest is fastened to each end of the holding strut. In this case, the retaining strut is expediently arranged vertically or at least partially vertically and has, for example, an angle of at most 45° to the vertical. In this case, the retaining strut expediently protrudes beyond the covering, so that the armrests are not obstructed by the covering, which further increases comfort. For example, the armrests are made of wood, plastic or metal. The armrests are expediently each provided with padding, which further increases comfort.

In a development, each of the armrests is additionally connected to one of the cross braces, in particular by means of an auxiliary brace. It is therefore not necessary to design the retaining strut to be comparatively robust so that the armrests are not deformed when they are used. In other words, the stability of the armrests is increased, and it is not necessary to design the support strut to be overly robust. A defined movement of the retaining strut also takes place in this way when the covering and thus also the cross struts are loaded, which further increases comfort. In addition, the user is partially guided when sitting in the hollow by means of the auxiliary struts and armrests, which simplifies the use of the seating furniture.

For example, the covering has a plurality of separate components, with the seat surface being formed by means of one of the components and the backrest being formed by means of a component separate therefrom. The components of the backrest and/or seat are each in one piece, for example, or they also have further sub-components. It is thus possible to specifically change the stiffness of the covering in individual areas. However, the covering is particularly preferably in one piece, which on the one hand improves the visual impression. On the other hand, manufacturing is facilitated and comparatively few steps are required to manufacture the seating furniture. For example, the fabric is cut out of a fabric, with individual Edges are sewn together or joined together in some other way so that the hollow shape is created. As an alternative to this, the covering is already made with the cavity mold.

For example, the piece of seating furniture comprises a V-shaped holding frame, which is connected at the free end to one of the free ends of the cross braces facing away from the foot. For example, the holding frame is in one piece with the cross braces and is therefore formed onto them. Particularly preferably, however, the holding frame is attached to the transverse struts via other components of the seating furniture item, with the other components being configured, for example, rigidly or particularly preferably elastically. In other words, the holder frame is spaced apart from the cross braces. The opposite end of the holding frame is expediently fastened to the free ends of the longitudinal struts facing away from the foot. Thus, by means of the V-shaped holding frame, the depression is expediently stretched out laterally and, for example, partially limited. In particular, the position of the free ends relative to one another is stabilized, so that excessive bending of the transverse struts and longitudinal struts relative to one another is avoided. In this way it is also possible for a user to hold on to the holder frame when sitting down or standing up, which further increases comfort. For example, the free ends of the holding frame or at least its individual legs are fastened to one another with a stabilizing strut, so that the holding frame is essentially triangular in shape. Stability is thus increased.

The covering is particularly preferably fastened to the holder frame, in particular at the edge, so that the holder frame in particular partially carries the covering. Thus, the covering is also partially stretched and stabilized by means of the holding frame. As a result, it is easier for the user to use the seating furniture item, and the position of the seat surface and the backrest is stabilized, even with a covering that is designed to be comparatively limp. In addition, in this way it is not necessary to keep the covering comparatively taut, so that excessive wear of the covering is reduced, which is why the useful life of the seating furniture item is extended. In an alternative, the holder frame is essentially straight or U-shaped. The holder frame is expediently fastened directly to the longitudinal struts, preferably to their free ends. Suitably, the free ends of the longitudinal struts are arranged essentially centrally on the holder frame. The covering is suitably fastened directly to the holder frame or, for example, by means of rubber cords. In this way, the covering is also stretched by means of the holding frame.

For example, the end of the holder frame facing away from the free ends of the V-shape is fastened directly to the longitudinal struts. Thus, the holder frame is essentially only arranged in one (oblique) plane. Particularly preferably, however, the holder frame projects beyond the longitudinal struts in the vertical direction and is bent at the ends onto the free ends of the longitudinal struts. In other words, the holder frame has a kink or some other bend, so that the end of the holder frame facing away from the free ends points downward toward the longitudinal struts in the vertical direction, for example, or has an angle other than 0° to the vertical direction. Because of the bending, it is thus possible to orientate the holder frame comparatively steeply, so that the backrest is also arranged comparatively steeply.

The holder frame is expediently also designed to be flexible, so that when the cavity is loaded, especially when the user sits down, the kink is partially widened, so that the free ends of the transverse struts can move slightly towards the free ends of the longitudinal struts despite the holding frame. This results in an improved adaptation of the hollow and the covering to the shape of the user, with uncontrolled pivoting of the free ends of the transverse struts and the longitudinal struts relative to one another being avoided, so that the sense of security for the user is increased.

Alternatively or particularly preferably in combination with this, the covering has pockets on the edge, within each of which a stabilizing band is guided. In particular, the stabilization straps and pockets and their arrangement designed to each other in the manner of a welt. In this case, the pockets are closed in particular on the peripheral side, so that the respective stabilization band is completely surrounded on the peripheral side, at least in sections, by means of the pockets. Consequently, the stabilizing straps are held by means of the pockets. As an alternative to this, the pockets are open and in particular designed in the manner of a fold. This simplifies assembly, and folds in the pockets are avoided even when the stabilizing straps move relative to the respective pocket.

The stabilizing band is, for example, a traction cable that has a comparatively high level of rigidity. As an alternative to this, the or at least one of the stabilizing bands is elastically deformable and is formed, for example, by means of a rubber or other plastic. The covering is partially stretched out by means of the stabilizing straps, and the stabilizing straps are fastened, for example, directly or at least indirectly to the free ends of the struts. As a result, freedom of movement of the free ends of the transverse struts and the longitudinal struts is at least partially restricted, so that uncontrolled behavior of the seating furniture item is avoided. It is also possible to take over the function of the holding frame or any further strut by means of the stabilizing straps, so that these are not present, for example, but corresponding stabilizing straps are. For example, a front edge of the seat surface is formed or provided by means of one of the stabilizing straps or the stabilizing strap. Particularly preferably, the possible holder frame is attached to the cross braces by means of at least two of the stabilizing straps. For this purpose, each stabilizing band is expediently fastened to one of the free ends of the holding frame. The remaining end of the respective stabilizing band is attached to the cross brace, for example directly, or to a corresponding extension. In this case, the cross braces are preferably bent in the direction of the holding frame, for which reason the fastening is facilitated.

Alternatively or in combination, for example, the covering has additional pockets, with each of the pockets having a corresponding one Stabilization band is assigned. The pockets are spaced, for example, from the edge of the covering and are used to form the cavity. In this case, the stabilization straps are preferably designed to be elastic, so that an adaptation to the shape of the user is possible.

For example, the cross braces are free of the covering, with the exception of the attachment of the covering to the free ends or at least in the area of the free ends. As an alternative to this, the cross braces themselves are wrapped with the covering. In this way, excessive bending of the transverse struts away from one another by means of the covering is avoided, so that damage, such as breaking of the transverse struts, is prevented even in the event of a comparatively large load, in particular a comparatively large weight of the user.

For example, the chair includes a leg rest that is provided and configured to support the user's legs when seated on the seat bottom. Thus, comfort is further increased. Here, the leg rest is expediently attached to the cross braces, which simplifies construction. The leg rest is expediently mounted pivotably on the transverse struts, in particular on the free ends facing away from the foot, or at least in the area of the free ends, so that when the leg rest is not being used, it remains folded in particular. In this state, the leg rest is expediently arranged parallel or essentially parallel to the cross braces, which is why the space requirement is reduced. The user is also not hindered by the folded leg rest. In particular, it is possible to unfold the leg rest so that it points at least partially away from the cross braces so that the user can use it. In particular, the leg rest is arranged essentially parallel to the holder frame, if this is present, which on the one hand improves a visual impression. On the other hand, comfort is increased with this angle of the seat surface to the leg rest. Preferably, the piece of seating furniture includes a locking mechanism by means of which the leg rest can be locked in the folded and/or unfolded state. Thus, comfort is further increased. In particular, the leg rest includes a V-shaped auxiliary frame which is made, for example, from the same material as the transverse struts, longitudinal struts, the further strut and/or the holder frame, which simplifies the manufacture of the seating furniture item. The subframe is expediently also designed to be flexible, so that when the crossbars move relative to one another, the subframe is also partially deformed, which on the one hand prevents damage to the attachment of the leg rest to the crossbars. On the other hand, comfort is increased in this way.

The free ends of the V-shaped auxiliary frame are expediently mounted on the transverse struts and, in particular, are fastened by means of a bearing, with each of the transverse struts being associated with one of the free ends. For example, the subframe is provided with the fabric so that the fabric extends over the seat to the subframe. In this way, assembly is simplified. As an alternative to this, the auxiliary frame is provided with a further covering, which is designed to be rigid, for example, or particularly preferably designed to be at least partially elastic, which increases comfort.

Any holder frame, any auxiliary frame, any other struts - with the exception of the transverse struts and the longitudinal struts -, the foot and / or other components of the chair are preferably rigid. In particular, the material is the same or different in each case. For example, a metal such as aluminum, ie pure aluminum or an aluminum alloy, or a plastic is used as the material. The plastic is, for example, glass fiber reinforced and preferably glass fiber reinforced polyamide.

The invention further relates to a foot stool, which comprises a further foot, to which two further flexible transverse struts and, with respect to these, two further flexible longitudinal struts offset forward in a further direction are connected. Here, the free ends of the further cross braces facing away from the further foot are in the further direction, for example opposite runs in the direction of orientation in the intended arrangement, offset forward, so that the further longitudinal struts and the further cross struts intersect. The free ends of the further transverse struts and the further longitudinal struts facing away from the further foot preferably end essentially in a horizontal plane and are mutually stabilized by means of a rigid further auxiliary frame, which is covered with the further covering. The further subframe or at least the subframe covered with the further covering is preferably designed in the shape of a saddle. The additional covering is expediently designed to be limp and, for example, made of the same material as the covering of the seating furniture item.

In addition, the invention relates to a system with such a footstool and with an above-mentioned piece of seating furniture. The developments and advantages explained in connection with the seating furniture can also be transferred to the system/the footstool and to each other and vice versa.

Exemplary embodiments of the invention are explained in more detail below with reference to a drawing. Show in it:

Fig. 1 - 5 each in different views of a piece of seating furniture that includes an unfolded leg rest

Fig. 6 - 8 each in different views of a piece of seating furniture in which the leg rest is folded in,

Fig. 9 in perspective a modification of the seating furniture,

Fig. 10 - 12 in perspective another embodiment of the seating furniture,

13 perspective view of a further modification of the seating furniture,

Fig. 14, 15 in perspective another modification of the chair, and Fig. 16, 17 in perspective a footstool.

Corresponding parts are provided with the same reference symbols in all figures.

In FIGS. 1, 2 and 3, a piece of seating furniture 2 in the form of a lounge chair is shown from different perspectives, which is shown in FIG. 4 in a bottom view and in FIG. 5 in a top view. The chair 2 includes a foot 4, by means of which the chair 2 stands up on a floor not shown in detail, and which forms the lower end of the chair 2 in the vertical direction. The foot 4 is V-shaped and is arranged along an orientation direction 6, which corresponds to the direction in which a user looks when he is properly seated on the chair 2. The foot 4 is a mirror image of the direction of orientation 6, the mutually spaced free ends of the V-shapes being offset forwards in the direction of orientation 6 with respect to the remaining end.

At the foot 4 two flexible cross braces 8 are connected, which are made of glass fiber reinforced plastic (GRP). The transverse struts are fastened at the end to the rear end of the foot 4 in the direction of orientation 6 and run upwards in the vertical direction and forward in the direction of orientation 6, with the two free ends 10 of the transverse struts 8 facing away from the foot 4 perpendicular to the direction of orientation 6 from one another are shifted away. The free ends 10 of the transverse struts 8 facing away from the foot 4 are bent counter to the direction of orientation 6 and are connected to one another and stabilized relative to one another by means of a flexible further strut 12 which is made from a glass fiber reinforced plastic and is molded onto the transverse struts 8 . In summary, the transverse struts 8 point forward in the orientation direction 6 , so that the free ends 10 of the transverse struts 8 facing away from the foot 4 are offset forward in the orientation direction 6 . The cross braces 8 are configured as mirror images of one another with respect to the direction of orientation 6 . A V-shaped holding frame 14 is connected to the free ends 10 of each cross brace 8 facing away from the foot 4 and is arranged at an angle in part to the horizontal and vertical direction. Each free end of the holding frame 14 is fastened to one of the transverse struts 8 in each case by means of an assigned stabilizing band 15 (FIG. 13). The stabilizing straps 15 are designed to be elastic and, in one embodiment, are made of rubber. The end 16 of the holder frame 14 opposite the transverse struts 8 is bent downwards in the vertical direction, so that it points downwards in the vertical direction when the seating furniture item 2 is in the intended state. Consequently, the holder frame 14 is hook-shaped in a side view.

The opposite end 16 of the holding frame 14 is connected to free ends 18 of two flexible longitudinal struts 20 facing away from one foot 4 and fastened there in a cohesive manner. Thus, the holding frame 14 protrudes beyond the longitudinal struts 20 in the vertical direction. The free ends 18 of the longitudinal struts 20 facing away from the foot 4 essentially point upwards in the vertical direction.

The free ends 10 of the transverse struts 8 facing away from the foot 4 are offset forward in the orientation direction 6 with respect to the free ends 18 of the longitudinal struts 20 facing away from the foot 4 . The transverse struts 8 and the longitudinal struts 20 are each bent, with the opening of the bend pointing upwards in the vertical direction. The longitudinal struts 20 are also made of the same glass fiber reinforced plastic (GRP) and run partly in the orientation direction 6. The two longitudinal struts 20 are each attached to the end of the foot 4, namely in the area of the free ends of the V-shape of the foot 4 these ends of the longitudinal struts 20 are offset away from one another perpendicularly to the orientation direction 6 with respect to the free ends 18 facing away from the foot 4 , and the longitudinal struts 20 are attached to the foot 4 offset forward in the orientation direction 6 with respect to the transverse struts 8 . Consequently, the transverse struts 8 and the longitudinal struts 20 intersect. The holding frame 14 is covered with a flexible covering 22 which is fastened to the holding frame 14 at the edge. For this purpose, the covering 22 is wrapped around the holding frame 14 at the edge. Thus, the covering 22 is fastened to the free ends 18 of the longitudinal struts 20 facing away from the foot 4 . Furthermore, the covering 22 is also fastened to the free ends 10 of the cross braces 8 and the further brace 12 facing away from the foot 4 . By means of the covering 22, two pockets 23 are formed on opposite sides, within each of which lies one of the stabilizing straps 15 and is thus held there.

The covering 22 is made of a textile fabric, such as a fabric, and a hollow 24 is formed by means of this. The hollow 24 is stretched out by means of the stabilizing straps 15 held in the pockets 23 , the further strut 12 and the auxiliary frame 14 . In this case, both a backrest 26 and a seat 28 are formed by means of the covering 22, namely a part of the hollow 24. When a user uses the chair 2, he sits on the seat surface 28 and can lean his back against the backrest 26.

In addition, a v-shaped auxiliary frame 30 is covered by means of the cover 22 and is sewn to the cover 22 in the same way as the holding frame 14 . The auxiliary frame 30 is also flexible and made from the same glass fiber reinforced plastic. In addition, the auxiliary frame 30 is pivotably mounted on the free ends 10 of the cross braces 8 facing away from the foot 4 . The auxiliary frame 30 provided with the covering 22 forms a leg rest 32 which, in the unfolded state, as shown here, is arranged in a plane such as the free-end end of the auxiliary frame 14 . However, it is also possible, as shown in FIGS. In this folded-in state, it is not possible to use the leg rest 32, but the extension of the chair 2 in the direction of orientation 6 is reduced. The chair 2 also has a U-shaped support strut 34, which is arranged horizontally and inserted into the cavity 24 and is thus held by means of this. The retaining strut 34 is spaced apart from the longitudinal struts 20 and the transverse struts 8 . The seat surface 28 is separated from the backrest 26 by the support strut 34 and the hollow 24 has a kink which is defined by the support strut 34 . The rear end of the seat surface 28 in the orientation direction 6 is bent in a U-shape by means of the retaining strut 34 and is therefore adapted to a rounding of the buttocks of the user. In addition, the horizontal cross section of the backrest 26 is formed in a U-shape by means of the retaining strut 34 in the area of the seat surface 28, so that the backrest 26 nestles against the user's back there.

The retaining strut 34 is held on the longitudinal struts 20 by means of two straps 36 , one of the straps 36 being associated with each of the longitudinal struts 20 . The straps 36 are made from a cable and protrude through openings (not shown) in the one-piece covering 22. Due to the design of the straps 36, mobility of the retaining strut 34 with respect to the longitudinal struts 20 is possible, with the maximum movement being limited by the straps 36.

When a user sits on the piece of seating furniture 2, the longitudinal struts 20 and the transverse struts 8 yield slightly due to the flexible configuration and are partially deformed. Here, the free ends 10, 18 of the transverse struts 8 and longitudinal struts 20 are partially stabilized in relation to one another by means of the elastically configured stabilizing straps 15, so that excessive deformation is avoided. However, the inclination of the seat surface 28 and the backrest 26 changes depending on the positioning of the user, so that comfort is increased for the user. Due to the retaining strut 34, the size of the seat surface 28 and the backrest 26 does not change, although a slight tilting with respect to the longitudinal struts 20 is made possible due to the flexibility of the straps 36. Depending on the position of the leg rest 32, it is also possible for users to rest their legs on the covering 22. In Figure 9, a modification of the chair 2 is shown in perspective. Here, the leg rest 32 is omitted. However, the cross braces 8 are wrapped with the covering 22 so that the free ends 10 of the cross braces 8 facing away from the foot 4 are prevented from being spaced apart. Therefore, this embodiment does not require the further strut 12, which is omitted here. However, it is also possible to continue to provide them. However, there is no other change.

A last variant of the seating furniture item 2 is shown in perspective in FIGS. 10 and 11 and in a rear view in FIG. The seating furniture 2 is now an office chair, and the horizontally arranged foot 4 is designed in the shape of a cross, with a roller 38 being held at each end of the cross, so that the seating furniture 2 can be moved. The connections of the longitudinal struts 20 and transverse struts 8 are adapted accordingly, with the transverse struts 8 being attached to the foot 4 offset to the rear in relation to the longitudinal struts 20 in the orientation direction 6 .

The further strut 12 is again present, and in contrast to the previous embodiments, the holder frame 14 is only limited to the vertical section. The holding frame 14 is U-shaped or V-shaped and attached to the longitudinal struts 20 directly. The free ends of the holding frame 14 are connected to one another by means of a stabilizing strut 40 which is sewn to the covering 22 so that the covering 22 is also fastened to the free ends 18 of the longitudinal struts 20 via the holder frame 14 .

Between the holding frame 14 and the free ends 10 of the cross braces 8 facing away from the foot 4, the covering 22 in turn has the pockets 23 on the edge, within which the stabilizing band 15 (not shown in detail) is held, which is formed by means of a tension cable or a rubber band. The connection of the pockets 23 with the respective stabilization band 15 is designed in the manner of a welt. Using the stabilizing straps 15 the covering 22 is also stretched so that the hollow 24 is formed.

The shape of the hollow 24 is also determined by means of the retaining strut 34, which is now attached to the outside of the hollow 34, ie on the side facing the longitudinal struts 20, namely sewn. The retaining strut 34 is still spaced apart from the longitudinal struts 20 and the transverse struts 8 and is held on the longitudinal struts 20 by the straps 36 . To increase comfort, the cavity 34 is lined with padding 46 on the inside, ie on the side opposite the holding strut 34 .

In this variant, the retaining strut 34 is arranged at an angle of 45° to the horizontal and vertical. The support strut 34 protrudes beyond the covering 22, and an armrest 42 is fastened to each end of the support strut 34 and is arranged essentially horizontally. Each of the armrests 42 is fastened to an associated cross brace 8 by means of an associated auxiliary brace 44 . The auxiliary struts 44 act in the orientation direction 6 on the front end of the armrests 42 and the retaining strut 34 acts on the rear end in the orientation direction 6 of the armrests 42 arranged in the orientation direction 6 .

FIG. 13 shows a perspective view of another embodiment of seating furniture 2, which is based on the variant shown in FIGS. 10-12. Here, the foot 4 is modified and essentially corresponds to the variant shown in FIG. In comparison to this, however, here too the retaining strut 34 is bent in a U-shape, with the armrest 52 being fastened to this at the end, corresponding to the variant shown in FIGS. 10-12. The V-shaped holding frame 14 is also connected at the end by means of the stabilizing strut 40 to which the stabilizing straps 15 are attached. The stabilizing straps 15 extend over the U-shaped retaining strut 34, at the ends of which they are fastened, to the free ends 10 of the cross struts 8 facing away from the foot 4, which are stabilized relative to one another by means of the further strut 12. FIG. 14 shows a perspective rear view of a further embodiment of the chair 2, which is based on the variant shown in FIG. FIG. 15 shows the item of seating furniture 2 from the same perspective, but the covering 22 has been omitted. In comparison to the variant shown in FIG. 9, the pockets 23 are modified and are now designed open in the manner of a fold. A relative movement of the stabilizing straps 15 with respect to the respective pocket 23 is thus possible.

Here again, the transverse struts 8 are provided with the covering 22 , which are stabilized relative to one another by means of the further strut 12 on the foot 4 opposite the free end 10 facing away. In addition, the free ends 10 of the cross braces 8 facing away from the foot 4 are bent over in a U-shape or hook-shape, so that they point in the direction of the holding frame 14 . As a result, attachment of the stabilizing straps 15 is facilitated. The stabilizing straps 15 are also not kinked in this way and essentially merge into the respective free ends 10, which is why a load is reduced there when the chair 2 is used

The shape of the foot 4 is slightly modified compared to the variant shown in Figure 9 and it is essentially V-shaped. The free ends of the V-shape merge into the longitudinal struts 20, and at the opposite end of the two legs of the V-shape of the foot 4, which are thus connected to one another, the transverse struts 8 are fastened.

A footstool 48 is shown in perspective in FIG. It is thus possible to use the footstool 48 in the variants of the seating furniture item 2 shown in FIGS. 9-15, so that a system is formed. However, the basic use of the seating furniture 48 is also possible with the other configurations of the seating furniture 2 .

The footstool 48 has a V-shaped further foot 50, the construction of which is essentially the foot 4 shown in FIG. 14 and FIG Variant of the seating 2 corresponds. A further longitudinal strut 52 is connected to each free end of the V-shape of the further foot 50 . In the area in which the two legs of the V-shape of the additional foot 50 are attached to one another, two additional cross braces 54 are attached to the additional foot 50 . The further longitudinal struts 52 and the further transverse struts 54 are also designed to be flexible, whereas the further foot 50 is designed to be rigid.

The further longitudinal struts 52 and the further transverse struts 54 intersect, and a saddle-like further auxiliary frame 56 is fastened to the free ends of the further longitudinal struts 52 and the further transverse struts 54 opposite the further foot 50 and is rigid. The further auxiliary frame 56 is covered with a further covering 58, by means of which the two further cross braces 54 are looped around. The other covering 58 is also designed to be flexible. It is thus possible for a user to place his legs on the part of the further covering 58 by means of which the further auxiliary frame 56 is related. It is also possible to position the footstool 48 in essentially any position with respect to the seating furniture item 2 .

In summary, the footstool 48 has the additional foot 50 to which the two flexible additional transverse struts 54 and, with respect to these, two flexible additional longitudinal struts 52 offset forward in a further direction are connected. The further direction preferably runs counter to the orientation direction 6 when the footstool 48 is arranged for the intended use in the seating furniture item 2 . The free ends of the additional transverse struts 54 facing away from the additional foot 50 are offset forward in the additional direction with respect to the free ends of the additional longitudinal struts 52 facing away from the additional foot 50 , so that the additional longitudinal struts 52 and the additional transverse struts 54 intersect. The free ends of the additional transverse struts 54 and the additional longitudinal struts 52 facing away from the additional foot 50 essentially end in a horizontal plane and are mutually stabilized by means of the rigid additional auxiliary frame 56 , which is covered with the additional covering 58 . The invention is not limited to the exemplary embodiments described above. On the contrary, other variants of the invention can also be derived from this by a person skilled in the art without departing from the subject matter of the invention. In particular, all of the individual features described in connection with the individual exemplary embodiments can also be combined with one another in other ways without departing from the subject matter of the invention.

Reference List

2 seating furniture

4 feet

6 orientation direction

8 crossbar

10 free end of the cross brace facing away from the foot

12 more brace

14 holding frame

15 stabilization band

16 opposite end

18 free end of the longitudinal strut facing away from the foot

20 longitudinal brace

22 covering

23 pocket

24 hollow

26 backrest

28 seat

30 subframe

32 leg rest

34 holding death

36 bands

38 roll

40 stabilizer bar

42 armrest

44 auxiliary strut

46 padding

48 footstools

50 more feet

52 more longitudinal brace

54 more crossbar

56 additional subframes

58 additional covering

Claims

26 claims

1. Seating furniture item (2) with a foot (4) to which two flexible transverse struts (8) and two flexible longitudinal struts (20) offset forward in an orientation direction (6) are attached, the foot (4) Facing away free ends (10) of the transverse struts (8) with respect to the foot (4) facing away from the free ends (18) of the longitudinal struts (20) are offset forward in the direction of orientation (6), and with an attached slack covering (22) which attached to the free ends (10, 18) of the transverse struts (8) and the longitudinal struts (20) facing away from the foot (4) in such a way that a hollow (24) is formed, which has a seat (28) and a backrest (26) forms, a retaining strut (34) being held on the hollow (24), by means of which the seat surface (28) and the backrest (26) are separated, and which is held on the longitudinal struts (20) by means of a strap (36).

2. Seating furniture (2) according to claim 1, characterized in that the retaining die (34) is bent in a U-shape.

3. Seating furniture (2) according to claim 2, characterized in that the retaining star (34) is arranged horizontally.

4. Seating furniture (2) according to claim 2, characterized in that an armrest (52) is fastened to the end of the retaining die (34).

5. Seating furniture (2) according to any one of claims 1 to 4, characterized in that the covering (22) is in one piece. Seating furniture (2) according to one of Claims 1 to 5, characterized by a V-shaped holding frame (14) which is connected at the free end to one of the free ends (10) of the transverse struts (8) facing away from the foot (4), the opposite End (16) of the holding frame (14) is attached to the foot (4) facing away from the free ends (18) of the longitudinal struts (20). Seating furniture (2) according to Claim 6, characterized in that the V-shaped holding frame (14) projects beyond the longitudinal struts (20) in a vertical direction and is bent at the ends onto the free ends (18) of the longitudinal struts (20). Seating furniture (2) according to one of Claims 1 to 7, characterized in that the covering (22) has pockets (23) on the edge, within which stabilizing strips (15) are guided. Seating furniture (8) according to one of Claims 1 to 8, characterized in that the cross braces (8) are looped around with the covering (22). Seating furniture (2) according to one of Claims 1 to 9, characterized in that a leg rest (32) is pivotably mounted on the transverse struts (8) and in particular comprises a V-shaped auxiliary frame (30) which is connected to the covering (22) is provided.