EP2898794A1 - Seating furniture with a saddle-shaped seat base - Google Patents

Abstract

The invention relates to seating (1) with a saddle-shaped seat surface (2), wherein the seat surface (2) on a seat post (3) is arranged. Here, the seat surface (2) between a front saddle spar (4) on a front spar support (5) and a rear saddle spar (6) on a rear spar support (7) is clamped.

Description

The invention relates to a chair according to the preamble of claim 1.

The demands on seating furniture, especially in the field of work furniture have risen steadily in the past. In particular, comfort requirements in combination with ergonomic aspects are in a variety of designs in the foreground. Back-friendly sitting is just as important as providing a flexible and compact seating, which has a stable stand and offers a high degree of flexibility in the setting of comfort parameters.

From the DE 1 032 492 B is a work chair with a mobile, three-legged pedestal and a height-adjustable saddle seat known.

Based on these requirements, the invention has the object to provide a compact seating furniture with high comfort flexibility, which meets the requirements of the user to a high degree.

This object is achieved on the basis of the preamble of claim 1 by the characterizing features of claim 1. Advantageous developments and expedient embodiments are specified in the dependent claims.

The invention relates to seating furniture with a saddle-shaped seat, wherein the seat is arranged on a seat post. The invention is characterized in that the seat between a front saddle spar is clamped to a front spar support and a rear saddle spar at a rear spar support. For the user, a saddle surface provides an anatomically comfortable way of sitting. In the present embodiment of the chair, the surface is made larger than a conventional saddle, such as a standing seat or a bicycle, so as to support the entire buttock area. The unpleasant formation of a "seat recess" is thereby avoided. In addition, a position in the healthy S-shape of the back is achieved because a moving sitting, as can be done on a ball sitting.

In a preferred embodiment, the seat surface is formed as a minimum surface by a covering, which is clamped between the saddle rails. In this way, the adaptation to the buttocks anatomy further improved and the seating comfort increased. Minimal surfaces always represent optimal uniformity of the surface course while avoiding edge points.

The invention further provides, the string, by which the seat is formed to connect with the front saddle spar between a first end of the front saddle spar and a second end of the front saddle spar in particular continuously and continuously with the front saddle spar along a first attachment portion and continue the string, by which the seat surface is formed, with the rear saddle spar between a first end of the rear saddle spar and a second end of the rear saddle spar to connect continuously and continuously with the rear saddle spar along a second attachment portion. In this way, an optimal connection of the seat or the seat covering forming clothing is achieved on the front and the rear saddle spar, so that it is possible to make the seat even made of highly flexible and / or thin materials such as fabrics or films, as these in the field Saddle rails are kept uninterrupted. This makes it possible in particular, the tensile stress, which for the sustainability of thin fabrics represents an essential factor to transfer evenly to the fabric and to avoid a tipping of the fabric, which is favored by stress peaks. According to the invention it is intended to clamp the fabric to the saddle rails and possibly additionally glued to these and / or to weld or wrap the fabric around the front saddle spar and / or the rear saddle spar and possibly additionally glued to this and / or to weld.

Another embodiment is characterized in that the seat is fixed to the saddle rails and between the saddle rails, in particular at connecting edges 9 is flexible. Here are the connecting edges in a peripheral edge region of the seat where the seat between the front saddle spar and the rear saddle spar extends. As a result, an optimal connection with the saddle bars is possible. In the seat operation of the seat according to the invention, the legs of the seated will usually rest against the side edges or connecting edges of the seat. The flexible design creates no pressure points.

Another embodiment of the chair according to the invention is that the seat between the saddle rails is stretched freely. The avoidance of support structures under the seat further improves the comfort of sitting, since no pressure points can arise and the seat adapts completely flexible.

The seating furniture according to the invention is further characterized in that the seat is spanned by a mesh fabric, which allows good ventilation and allows a comfortable sitting, especially in summer. As a result, the fabric has breathable properties so that body heat released by the user's body can be optimally removed through the fabric. Furthermore, a mesh fabric can be optimally adapted to the requirements by the weaving technique used and / or by the properties of the weaving thread.

According to the invention, both the first attachment region can follow a curved, convex course of the front seat spar, the first attachment region having a first length, and the second attachment region followed by a curved convex course of the rear seat spar, the second one Attachment region has a second length L6. By the two convex saddle spars spanned between the saddle spars saddle surface is shaped as a buttocks of the user convexly curved saddle surface and assumes a saddle similar, ergonomic shape.

With respect to the covering, the invention provides that they can be made with a maximum thickness of 3 mm and in particular with a maximum thickness of 2 mm. Such fabrics are available in a variety of designs cost and in particular can be easily realized with such fabrics breathable design. Such a dimensioning of the clothing ensures the required flexibility of the clothing in a simple manner, so that the clothing can easily follow the bending of the front or rear seat spar.

In a further expedient embodiment, it is provided that the front saddle spar on the front spar support and the rear saddle spar on the rear spar support are displaceable relative to each other, in particular via a tensioning device formed at a distance variable. If the clamping device comprises a spindle and a handwheel, it is now possible by a rotation of the spindle on its handwheel, to increase a distance between the two spar support sections and so to tension or reduce the clothing and thus to reduce a tension of the fabric. The tension and thus the hardness of the seat is adjustable by so that it is adaptable to individual comfort requirements and personal parameters, such as body weight and sitting position.

Moreover, an expedient embodiment of the chair is characterized in that the front saddle spar and the rear saddle spar at their ends each have a helical turn in which the seat is clamped, in particular wrapped, between the saddle rails, the seat preferably wrapped in its edge region to a string guide is guided. The "wrapping" of the fabric forming the seat provides a stable, torn edge without the need for additional edge reinforcements which, for example, reduce flexibility. It is conceivable to strike a flat material, which provides some guidance and dimensional stability for the wound area. At the ends of the spars, the worm winding provides an advantageous and stress-resistant guide for the material that forms the seat, since edges are avoided. In this way, a high material tension can be realized without special reinforcements must be made.

In general, in particular, the use of point-elastic mesh fabric as a covering material provides an advantageous embodiment for the seat surface, which offers high comfort with simultaneously given advantageous stability, for example when point loads occur through contents of back pockets (eg a keychain).

An expedient embodiment of the seating is that the seat post is arranged on a rolling frame, wherein the rolling frame in particular has a front arm with a front roller and two backhoe with back rollers and the angle α1 between the front arm and rear boom in particular greater 120 ° is formed. The arrangement of the seat post and a seating unit, which includes the seat, the saddle rails and the spar posts on the cradle gives the chair the opportunity to be used as a mobile workstation for project meetings and teamwork, or to provide a high degree of freedom at a desk. In addition, the seat post can be designed as a telescopic support, which allows a height adjustment of the seat unit relative to a substrate. In particular, a telescopic support is provided, which even allows an adjustment from the seating to the standing-seating furniture. The ability to design the front roller and / or one or both back roles as lockable roles, also offers an improved use as a standing-seating.

A further expedient embodiment is characterized in that the seat surface is defined at a front portion by the front saddle spar at a height h4 and a width b4 and at a rear portion by the rear saddle spar at a height h6 and a width b6, preferably h4 > h6 and b6> b4 is given. The widths of the saddle bars are measured horizontally in the room and at right angles to a longitudinal axis L1 of the seating unit lying horizontally in the space defined by the front spar support. By adhering to said dimensional ratios, the seat receives a three-dimensional shape, which meets the basic anatomical requirements. Basically, a highest point HP4 of the front seat spar opposite a highest point HP6 of the rear seat spar has a height difference H46 measured vertically in space, the highest point HP4 of the front seat spar being higher than the highest point HP6 of the rear seat spar. The corresponding saddle geometry, in which an advantageous shape of the seat arises, promotes well-being and allows a lasting fatigue-free sitting on the seating. The posture and body position is preferably brought in the form of a lordosis, in the sense of a forwardly inclined curvature or S-shape to allow a healthy sitting.

A further advantageous embodiment of the seat is that the course of the Holmstützen corresponds in vertical projection substantially the course of the boom. By the Nachempfindung the course of the Holmstützen to the course of the rolling frame and essentially the course of the saddle shape of the seat high positional stability is ensured because the supports and arms support along the tilt axes of the seat.

Furthermore, it is provided to form a carrier by the front spar support and by the rear spar support, in this case comprises a saddle the carrier, the front saddle spar, the rear saddle spar and trained as a covering seat, the front saddle spar at a front end of the carrier is arranged, wherein the rear saddle spar is arranged at the rear ends of the carrier, wherein the front saddle spar and the rear saddle spar are spaced from each other so that they are non-contact, wherein the string is attached to the opposite saddle spars, that the Covering under tension standing forms the seat, wherein the seat is convexly curved toward a buttocks of a user, the fabric is elastic stretchable and is designed and tensioned, that it is suitable to wear under elastic deformation as a seat the user. Such a trained seating furniture has a high level of comfort and is flexible in use.

Finally, it is provided either to make the length of the first attachment area equal to the length of the second attachment area and to make the clothing, by which the seat surface is formed, in the shape of a rectangle in a state in which it lies flat on a flat surface to thereby provide a seat or clothing, which is fastened to both support beams with comparable bias.

Alternatively, it is provided that the length of the first attachment region is greater than the length of the second attachment region with a maximum of 1.5 times the length of the second attachment region and the seat surface in a state in which it rests flat on a flat surface the shape of a rectangle or a trapezoid, thereby to provide special seat shapes in which the length of the mounting portion of the front seatpost is longer than the length of the mounting portion of the rear seat spar. Alternatively, it is further provided that the length of the second attachment region is greater than the length of the first attachment region with a maximum of 1.5 times the length of the first attachment region and the seat surface in a state in which it rests flat on a flat surface in the form of a rectangle or a trapezoid to thereby provide special seat shapes in which the length of the mounting portion of the front seat spar is shorter than the length of the mounting portion of the rear seat spar.

Finally, the invention provides an adjustability of a bias of the fabric to adjust a degree of elastic deformation of the fabric to the individual sensation of a user and / or to make an adjustment to the respective weight of a utility. Furthermore, this makes it possible to counteract a decrease in the voltage by material aging and / or a decrease or increase in the voltage due to temperature change and to produce the desired state of stress with minimal effort.

Fig. 1:

eine Fronansicht eines erfindungsgemäßen Sitzmöbels;

Fig. 2:

eine Rückansicht des in der Figur 1 gezeigten Sitzmöbels;

Fig. 3:

eine Seitenansicht des in der Figur 1 gezeigten Sitzmöbels von rechts;

Fig. 4:

eine Draufsicht einer Sitzfläche des in der Figur 1 gezeigten Sitzmöbels;

Fig. 5:

eine perspektivische Ansicht des in der Figur 1 gezeigten Sitzmöbels;

Fig. 6:

eine weitere Frontansicht des in der Figur 1 gezeigten Sitzmöbels;

Fig. 7:

eine weitere perspektivische Ansicht des in der Figur 1gezeigten Sitzmöbels bei als Gitternetz dargestellter Sichtfläche;

Fig. 8:

die Darstellung der Figur 7 ohne Sitzfläche;

Fig. 9:

die Darstellung der Figur 6 ohne Sitzfläche;

Fig. 10:

die Darstellung der Figur 3 ohne Sitzfläche;

Fig. 11:

eine Ausführungsvariante des erfindungsgemäßen Sitzmöbels mit einer Spannvorrichtung;

Fig. 12:

eine schematische, perspektivische Ansicht der flach ausgebreiteten Bespannung des in den Figuren 1 bis 10 gezeigten Sitzmöbels;

Fig. 13 und 14:

Ausführungsvarianten zu der in der Figur 12 gezeigten Bespannung und

Fig. 15:

eine Darstellung von zwei weiteren Ausführungsvarianten eines erfindungsgemäßen Sitzmöbels.

The invention will now be described with reference to the FIGS. 1 to 14 explained in more detail. However, the invention is not limited to the illustrated embodiment. Rather, it encompasses all those embodiments which make use of the idea according to the invention, in particular the literal meaning of the claims. It shows:

Fig. 1:

a front view of a seat according to the invention;

Fig. 2:

a rear view of the in the FIG. 1 seat shown;

3:

a side view of the in the FIG. 1 shown sitting furniture from the right;

4:

a plan view of a seat of the in the FIG. 1 seat shown;

Fig. 5:

a perspective view of the in the FIG. 1 seat shown;

Fig. 6:

another front view of the in the FIG. 1 seat shown;

Fig. 7:

another perspective view of the in the FIG. 1 seat shown in illustrated as a grid visible surface;

Fig. 8:

the representation of FIG. 7 without seat;

Fig. 9:

the representation of FIG. 6 without seat;

Fig. 10:

the representation of FIG. 3 without seat;

Fig. 11:

an embodiment of the seat according to the invention with a clamping device;

Fig. 12:

a schematic, perspective view of the flat spread fabric of the in the FIGS. 1 to 10 seat shown;

FIGS. 13 and 14:

Variants to those in the FIG. 12 shown stringing and

Fig. 15:

an illustration of two further embodiments of a seat according to the invention.

The invention relates, as in particular in the FIGS. 1 to 6 is shown, a chair 1 with a saddle-shaped seat 2, wherein the seat 2 is arranged on a seat post 3. The FIG. 1 shows the seating 1 in front view, the FIG. 2 shows the seating 1 in side view from the left, the FIG. 3 shows the seating 1 in rear view, the FIG. 4 shows the seating 1 from above, the FIG. 5 shows the chair 1 in perspective view and the FIG. 6 shows the chair 1 again in a front view, the front view is obliquely directed from below on the chair 1. Here, the seat 2 is clamped between a front saddle spar 4, which is held on a front spar support 5, and a rear saddle spar 6, which is held on a rear spar support 7. From the seat 2 are in the FIGS. 1 to 4 only edges shown. Between the edges, the seat surface 2 is shown as a transparent surface, so that the lying under the seat surface 2 or concealed by the seat 2 components are recognizable. To illustrate the course of the seat 2 and the fabric 8 is the representation of FIG. 5 in which the seating 1 is shown in a perspective view, in the FIG. 7 shown again so that the seat 2 and the fabric 8 is shown there schematically as a coarse grid, so that the course of the seat 2 in the room can be seen on the lines of the grid. To further clarify the structure of the chair 1 this is in the FIGS. 8 . 9 and 10 again shown in a perspective view, in front view and in side view, in each case was completely dispensed with the representation of the seat.

The seat surface 2 or the covering 8, which forms the seat surface 2, is firmly formed on the saddle rails 4, 6 by an adhesive connection and / or clamping connection and is designed to be flexible between the saddle rails 4, 6 at connecting edges 9a, 9b. Here are the connecting edges 9a, 9b in a peripheral edge region R2 of the seat 2 where the seat 2 extends between the front saddle spar 4 and the rear saddle spar 6. It can be seen from the top view of FIG. 4 that the connecting edges 9a, 9b have a straight course and run towards one another.

The seat 2 or the covering 8 are preferably formed by a mesh fabric 10, which is elastically extensible and which is permeable to air between a top 10 a and a bottom 10 b.

As in particular from the FIGS. 1 and 2 can be seen, the front saddle spar 4 at its ends 4a and 4b and the rear saddle spar 6 at its ends 6a and 6b are each in the form of a screw winding 12a, 12b and 12c, 12d. The seat 2 and the fabric 8 is for better connection with the ends 4a, 4b and 6a, 6b wrapped in these screw turns 12a - 12d. According to a preferred embodiment extends between the in the edge regions 9a, 9b of the fabric 8 opposite ends 4a, 6a and 4b, 6b a string guide 13a, 13b, which is wrapped by the fabric 8. Such a string guide 13a, 13b is preferably designed as a flexible rod and glued to the fabric 8 or welded or sewn. According to a further embodiment, the string guide is formed by the fabric itself and in particular generated by a wound and bonded or welded area.

The seating 1 comprises a rolling frame 14, which carries the seat post 3. In detail, the rolling rack 14 comprises a front boom 15 with a front roller 16 and two rear arms 17a, 17b with back rollers 18a, 18b. As can be seen in FIG. 4, the angles α1 and α2 between the front boom 15 and the rear booms 17a and 17b are each greater than 120 °.

In particular from the Figures 5 and 10 It can be seen that the front spar support 5 and the rear spar support 7 form a carrier T. In this case, the saddle S comprises this carrier T, the front saddle spar 4, the rear saddle spar 6 and the seat surface 8 designed as a covering 8. The front saddle spar 4 is arranged at a front end T1 of the carrier T and the rear saddle spar 6 is at rear ends T2, T3 of the two-armed Holmstütze 7 of the carrier T arranged. As a result, the front saddle spar 4 and the rear saddle spar 6 are spaced apart from each other in such a way that they lie opposite one another without contact. The fabric 8 is secured to the opposing saddle rails 4, 6 such that the fabric 8 under tension forms the seat surface 2, wherein the seat 2 is curved convexly to a buttocks of a user and wherein the fabric 8 is elastically extensible and is designed and tensioned so that it is suitable to wear under elastic deformation as a seat 2 the user. The saddle S is supported by the seat post 3, which is designed as a height-adjustable spring element and is held by the rolling frame 14. The seatpost 3 rotatably connects the rolling frame 14 with the saddle S in order to ensure a constant alignment of the arms 15, 17 a and 17 b on the saddle surface 2. The carrier T of the saddle S and the arms 15, 17a and 17b of the rolling frame 14 are - viewed in a vertical view from above on the chair 1 - both in the same orientation Y-shaped, as shown in FIG. 4 is apparent.

The seat 2 is, as in the Figures 3 and 4 shown at a front portion AF through the course of the front fifth wheel 4 with a measured from a parallel to a base G reference plane RP from vertically upwards measured height h4 and measured parallel to the reference plane RP width b4 and at a rear portion AR through defines the course of the rear seat spar 6 with a height h6 measured vertically upward from the reference plane RP and a width b6 measured parallel to the reference plane RP. Here, for the seating 1 shown, h4> h6 and b6> b4. The widths b4, b6 of the saddle rails 4, 6 are measured horizontally in space and at right angles to a longitudinal axis L1 of the seat 1 lying horizontally in space defined by the front spar support 5. By adhering to these dimensional ratios, the seat receives a three-dimensional shape, which corresponds to the basic anatomical requirements. Basically, a highest point HP4 of the front fifth wheel 4 opposite a highest point HP6 of the rear fifth wheel 6 has a height difference H46 measured vertically in space, the highest point HP4 of the front fifth wheel 4 being higher than the highest point HP6 of the rear fifth wheel 6.

A suitable for the user curvature of the seat 2 is further achieved in that - as in the FIG. 5 and 8th shown - the front saddle spar 4 is more curved than the rear saddle spar 6 and a mounting portion BS4 of the front seat spar 4 has a length L4, which corresponds to a length L6 of a mounting portion BS6 of the rear seat spar 6. in this connection is understood by a mounting region that portion of the mounting spar, on which the fabric is attached. In the illustrated seating 1, the two attachment areas are strip-shaped. With such a dimensioning of the lengths L4 and L6 of the mounting region BS4 and BS6 of the saddle rails 4 and 6, the fabric 8, which forms the seat surface 2 in the blank in the form of a rectangle. As a result, the fabric formed as a fabric is easy to work with respect to a Verüberung the edges, since in a fabric which is made in a corresponding length L4 and L6 width, no injury to the fabric in the weft threads by cutting done. The rectangular blank for the fabric 8 then has the dimensions L4 x L9b.

Especially in the FIG. 7 in which the fabric 8, which forms the seat 2, is shown schematically as a grid, it can be seen that the seat surface 2 from a front portion AF starting to a rear portion AR identifies a steadily decreasing convex curvature and further, as shown in FIG. 3 it can be seen, towards its rear portion AR in the direction of a substrate on which the seating is 1, drops. This shaping is enforced by the different degrees of curvature of the front seat spar 4 and the rear seat spar 6, wherein the rear saddle spar 6 has a saddle height height SH6, which is less than half a saddle height height SH4 of the front fifth wheel 4. This gives the inner sides of the thighs of a user who sits on the chair 1 so that he looks in the direction of arrow x, in a knee near area two large contact surface CP1 and CP2, which allow the user, the chair 1 by applying pressure with a Steer thighs to the left or right without the user feeling an unpleasant pressure point. The rear saddle spar 6 is in this case aligned with the front saddle spar 4 such that in the side view of FIG. 3 considered a lower edge K61 of the rear seat spar 6 higher above the ground G is as a lower edge K41 of the front seat post 4 and that in the side view of FIG. 3 considered an upper edge K62 of the rear seat spar 6 is below an upper edge K42 of the front fifth wheel.

In the FIG. 11 is a detail of a second seating 101 in the region of a clamping device 150 shown. The seating 101 is similar to that in the FIGS. 1 to 10 shown seating 1 executed. In contrast to this, the tensioning device 150 is in a front spar support 105, which in the FIG. 11 partially shown is integrated. Thus, it is possible to change the spar post 105 in its length L105 and thereby also a distance, which has a not shown front saddle spar to a rear saddle spar, not shown, to change. The front spar post 105 is subdivided into a fixed first section 105a connected to a rear spar post, not shown, and a displaceable second section 105b, the second section 105b carrying the front saddle post 4 (not shown). The clamping device 150 comprises a spindle 151 with an external thread 152, the spindle 151 being guided in a threaded bore 153 passing through the second section 105b. The spindle 151 extends with a mushroom-shaped projection 151a into a blind hole 154, which is embodied in the first section 105a, and is fixed therein by a retaining plate 155, wherein the retaining plate 155 with the first section 105a of the saddle spar 105 by schematically indicated fastening means 155a and 155b is connected. Furthermore, the second portion 105b of the spar post 105 is guided on the first portion 105a of the spar post 105 by means of two pins 156, 157. In this case, the pins 156, 157 are fixedly connected to the second section 105b of the spar post 105 and guided into bores 158, 159 of the first section 105a, the retaining plate 155 having through holes 160, 161 in the region of the bores 158, 159. By rotating the spindle 151 on a handwheel 162 about a spindle axis A151, it is possible to increase a distance d105 between the two sections 105a and 105b of the split spar post 105 and tension a clothing (not shown) of the seat 101 or to reduce the distance d105 and a voltage of the fabric, not shown, of the chair 101 to reduce. In order to ensure smooth running of the spindle 151, a ball 163 is arranged between the spindle 151 and a bottom 154a of the blind hole 154. With the help of the tensioning device, the user has the option of adjusting, by tensioning or relaxing the clothing, a degree of the elastic deformation which the clothing exhibits during a load, to its individual sensation or to its body weight.

In the FIG. 12 is the cover 8 of the in the FIGS. 1 to 10 shown seat furniture shown in perspective view and laid flat. The covering 8 is, as already mentioned, designed as a mesh fabric 10 and has a uniform thickness D8 between its upper side 10a and its lower side 10b. With a width B8 and a length L8, the fabric 8 is formed as a rectangular blank. In this case, the width B8 corresponds to the length L4 or L6 of the attachment region BS4 or BS6. The length L8 of the fabric 8 corresponds to the length of the connecting edge 9a, 9b. The width B8 has a value between 60 cm and 90 cm and in a preferred embodiment a value between 72 cm and 82 cm in one embodiment of the chair. The length L8 has a value between 30 cm and 70 cm in such a width B8 and in a preferred embodiment a value between 40 cm and 60 cm.

In the FIG. 13 is a variant of the in the FIG. 12 shown covering 8 shown. The fabric 208 is the same in dimensions B208, L208 and D208 as those in FIG FIG. 12 shown string 8 executed. In contrast to this, connecting edges 209a, 209b of the covering 208 are encapsulated with a plastic K in order to avoid fraying of the connecting edges 209a and 209b.

In the FIG. 14 is another embodiment of the in the FIG. 12 shown covering 8 shown. The covering 308 deviating from the covering 8 plan lying in plan view is not formed as a rectangle, but as an isosceles trapezoid. The bases have different lengths B308a and B308b and the legs have a uniform length L308. With respect to a thickness D308, the fabric 308 is the same as in FIG FIG. 12 shown string 8 executed. Such a covering 308 is used in seating furniture whose saddle rails have attachment areas with different lengths. In the FIG. 14 is indicated by dashed lines the shape, which in the FIG. 12 has shown covering 8.

According to two in the FIG. 15 illustrated embodiments, it provides the invention to measure the lengths of the attachment areas of the saddle rails differently. A covering is then optionally with a rectangular blank or with a trapezoidal blank. A rectangular blank is then stretched more during attachment in the region of the saddle spar with the greater length of the attachment region than in the region of the saddle spar with the shorter length of the attachment region. A trapezoidal cut, like this one in the FIG. 14 is then fastened with its shorter base side to the saddle spar with the shorter length of the attachment region and with its longer base side to the saddle spar with the greater length of the attachment region, wherein it is preferably provided, the trapezoidal blank or the trapezoidal fabric at their To encapsulate converging edges for stabilizing the edges, as in the FIG. 13 for a rectangular blank is shown. In the FIG. 15 a seat 401 is shown to the left of a longitudinal center plane LME, which has a rear seat spar 406, which has a mounting portion BS406, which is made shorter with a length L406 than a mounting portion BS404 of a front fifth wheel 404, which has a length L404. In the FIG. 15 right side of the longitudinal center plane LME a piece of furniture 501 is shown in detail, which has a rear saddle spar 506, which has a mounting portion BS506, which is made longer with a length L506 than a mounting portion BS504 of a front fifth wheel 504, which has a length L504. Through such variations of Saddle rails or the mounting lengths of the saddle rails can be adapted to the user's seat with a wide variety of physique and to various uses. With the two in the FIG. 15 Seat furniture shown 401 and 501 is a fabric 408 and 508, which forms a seat 402 and 502, only partially indicated. Both chairs also include a cradle like this one in the FIGS. 1 ff. is shown.

LIST OF REFERENCE NUMBERS

1 :

seating

2:

seat

3:

seatpost

4:

front saddle spar

4a:

first end of 4

4b:

second end of 4

5:

front spar support

6:

rear saddle spar

6a:

first end of 6

6b:

second end of 6

7:

rear spar support

8th :

covering

9a, 9b:

connecting edge

10:

Mesh fabric

10a, 10b:

Top or bottom of 10

11:

free

12a-12d:

cochlea

13a, 13b:

stringing guide

14:

roll stand

15:

Front boom of 14

16:

Front role at 15

17a, 17b:

Retriever of 14

18a, 18b:

Reverse roll of 17a or 17b

101:

second seating

105:

front spar support

105a:

first section of 105

105b:

second section of 105

150:

jig

151:

spindle

151a:

Extension 151

152:

External thread of 151

153:

Threaded hole in 105b

154:

Blind hole in 105a

154a:

Ground of 154

155:

Retaining plate 155

155a, 155b:

fastener

156, 157:

Pin at 105b

158, 159:

Bore in 105a

160, 161:

Through hole in 155

162:

Hand wheel of 151

163:

Bullet

208:

covering

209a, 209b:

Connecting edge to 208

308:

covering

401:

seating

402:

seat

404:

front saddle spar of 401

406:

rear saddle spar of 401

408:

covering

501:

seating

502:

seat

504:

front saddle spar of 501

506:

rear saddle spar of 501

508:

covering

α1, α1:

Angle between 15 and 17a or 17b

A151:

spindle axis

AF:

front section of 2

AR:

rear section of 2

B8:

Width of 8

B208:

Width of 208

B308a, B308b:

Width of 308

BS4, BS6:

Mounting area at 4 or 6

BS404, BS406:

Mounting area at 404 or 406

BS504, BS506:

Mounting area at 504 or 506

b4:

Width of 4

b6:

Width of 6

CP1, CP2:

Investment area at 2 or 8

D8:

Thickness of 8

D208:

Thickness of 208

D308:

Thickness of 308

d105:

Distance between 105a and 105b

G:

underground

HP4:

highest point of 4

HP6:

highest point of 6

H46:

Height difference between HP4 and HP6

h4:

Height of 4

h6:

Height of 6

K:

plastic

K41, K42:

Lower edge or upper edge of 4

K61, K62:

Lower edge or upper edge of 6

L1:

Longitudinal axis of 1 and 5 respectively

L4:

Length of BS4

L6:

Length of BS6

L8:

Length of 8

L9b:

Length of L9b

L105:

Length of 105

L208:

Length of 208

L308:

Length of 308

L404, L406:

Length of BS404 or BS406

L504, L506:

Length of BS504 or BS506

LME:

Longitudinal center plane

R2:

circumferential edge area of 2

RP:

reference plane

S:

saddle

SH4, SH6:

Saddle height of 4 or 6

T:

carrier

T1:

front end of 5

T2, T3:

rear end of 5

Claims (15)

Seating furniture (1) with a saddle-shaped seat surface (2), wherein the seat surface (2) is arranged on a seat post (3), characterized in that the seat surface (2) between a front seat post (4) on a front spar post (5) and a rear saddle spar (6) on a rear spar support (7) is clamped, and that the front saddle spar (4) on the front spar support (5) and the rear saddle spar (6) on the rear spar support (7) relative to each other slidably formed are. Seating furniture (1) according to claim 1, characterized in that the seat surface (2) as a minimum surface by a covering (8) between the saddle rails (4, 6) is clamped. Seat (1) according to one of the preceding claims, characterized - That the covering (8), which forms the seat surface (2), with the front saddle spar (4) between a first end (4a) of the front fifth wheel (4) and a second end (4b) of the front fifth wheel (4) in particular is connected continuously and uninterruptedly along a first attachment area (BS4) and - That the covering (8), which forms the seat surface (2) with the rear saddle spar (6) between a first end (6a) of the rear seat spar (6) and a second end (6b) of the rear seat spar (6) in particular continuous and uninterrupted along a second attachment area (BS6) is connected. Seating furniture (1) according to one of the preceding claims, characterized in that the seat surface (2) on the saddle rails (4, 6) fixed and between the saddle rails (4, 6), in particular at the connecting edges (9) is flexible. Seating furniture (1) according to one of the preceding claims, characterized in that the seat surface (2) between the saddle rails (4, 6) is clamped freely. Seating furniture (1) according to one of the preceding claims, characterized in that the covering (8) is formed by a mesh fabric (10). Seating furniture (1) according to claim 3, characterized in that the first attachment region (BS4; BS404; BS504) follows a curved, convex course of the front seat spar (4; 404; 504) and has a first length (L4; L404; L504) and that the second attachment portion (BS6; BS406; BS506) follows a curved, convex course of the rear seat spar (6; 406; 506) and has a second length (L6; L406; L506). Seating furniture (1) according to claim 2, characterized in that the covering (8) has a thickness (D8) of not more than 3 mm and in particular a thickness (D8) of not more than 2 mm. Seating furniture (1) according to one of the preceding claims, characterized in that the front saddle spar (4) on the front spar support (5) and the rear saddle spar (6) on the rear spar support (7) via a tensioning device (150) at a distance ( d105) are formed changeable. Seating furniture (1) according to one of the preceding claims, characterized in that the front saddle spar (4) and the rear saddle spar (6) at their ends (4a, 4b, 6a, 6b) each have a screw turn (12a, 12b, 12c, 12d ), in which the seat surface (2) is clamped, in particular wrapped, wherein between the saddle rails (4, 6) the seat surface (2) is preferably wound in its edge region around a string guide (13). Seating furniture (1) according to one of the preceding claims, characterized in that the seat post (3) is arranged on a rolling frame (14), wherein the rolling frame in particular has a front arm (15) with a front roller (16) and two back arms (17, 17a). with back rollers (18, 18a) and an angle a1 between the front arm (15) and the rear arm (17, 17a) is in particular greater than 120 °. Seating furniture (1) according to one of the preceding claims, characterized in that the seat surface (2) at a front portion through the front saddle spar (4) at a height (h4) and a width (b4) and at a rear portion through the rear Saddle spar (6) in a height (h6) and a width (b6) is defined, wherein preferably h4> h6 and b6> b4 is given. Seating furniture (1) according to one of the preceding claims, characterized in that the profile of the spar supports (5, 7) in vertical projection substantially corresponds to the course of the arms (15, 17, 17a). Seating furniture according to claim 1, characterized - That the front spar support (5) and the rear spar support (7) form a support (T), - wherein a saddle (S) comprises the carrier (T), the front saddle spar (4), the rear saddle spar (6) and the covering (8) formed seat surface (2), - wherein the front saddle spar (4) at a front end (T1) of the carrier (T) is arranged, wherein the rear saddle spar (6) at rear ends (T2, T3) of the carrier (T) is arranged, - Wherein the front saddle spar (4) and the rear saddle spar (6) are spaced apart from each other so that they lie without contact, - wherein the covering (8) is secured to the opposite saddle bars (4, 6) in such a way that the covering (8) under tension forms the seating surface (2), - wherein the seat surface (2) is convexly curved towards a user's buttocks, - Wherein the fabric (8) is elastically stretchable and is designed and tensioned so that it is suitable, under elastic deformation as a seat (2) to carry the user. Seating furniture (1) according to claim 7, characterized - That either the length (L4) of the first mounting portion (BS4) is equal to the length (L6) of the second mounting portion (BS6) and the fabric (8), which forms the seat (2) lying flat lying in the shape of a rectangle or - That the length (L404) of the first mounting portion (BS404) is greater than the length (L406) of the second mounting portion (BS406) and at most 1.5 times that of the length (L406) of the second mounting portion (BS406) and the Covering (408), which forms the seat surface (402), lying flat lying in the form of a rectangle or a trapezoid, or - That the length (L506) of the second mounting portion (BS506) is greater than the length (L504) of the first mounting portion (BS504) and a maximum of 1.5 times the length (L504) of the first mounting portion (BS504) and the stringing (508), which forms the seat (502) lying flat lying in the form of a rectangle or a trapezoid.

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