EP3409144B1 - Chair, specifically conference or office chair and method of producing such a chair - Google Patents

Description

FIELD OF THE INVENTION

The present invention relates to a chair, in particular a conference or office chair, and a method for producing such a chair.

TECHNICAL BACKGROUND

Although the present invention and the problem on which it is based are described in more detail below in relation to office swivel chairs, it is not restricted to this, but can be transferred to a variety of chairs, in particular conference or office chairs.

Office swivel chairs exist with various designs of a swivel or synchronous mechanism. A synchronous mechanism specifies an exact movement sequence and has an integrated spring, which provides a preload for the movement sequence.

An office swivel chair with swivel mechanism is in the publication, for example US 2002/0149247 A1 described. The base and handlebar of such a swivel mechanism are designed to be relatively solid. Overall, it therefore requires a relatively large amount of installation space, so that the entire structure of such an office swivel chair below the seat support appears very solid, which is disadvantageous in particular from a design point of view.

From the DE 10 2016 217503 one already knows a chair with a more delicate appearance, in which the backrest support and seat support have an articulated connection and in which the swivel mechanism is realized with an energy storage element arranged between the backrest support and the seat support in the form of an armrest support provided with a spring. Armrests must therefore be provided on the chair in question, as well as the in the unloaded position of the Prestressing to be established by the chair through these armrests is not always an easy-to-use configuration. WO2008 / 000295A1 shows another chair, the support device is considered to be prior art, which is considered useful for understanding the invention.

SUMMARY OF THE INVENTION

Against this background, the present invention is based on the object of specifying an improved chair, in particular a conference or office chair. The chair in question should be both of high quality and light and inexpensive to manufacture. Due to these properties, alternative uses, for example in the private sector, can also be developed.

According to the invention, this object is achieved by a chair with the features of claim 1 and / or by a method with the features of claim 11.

• Ein Stuhl, insbesondere ein Konferenz- oder Bürostuhl, wie in Anspruch 1 definiert.
• Ein Verfahren zur Herstellung eines Stuhls, wie in Anspruch 11 definiert.

Accordingly, it is provided:

• A chair, particularly a conference or office chair, as defined in claim 1.
• A method of making a chair as defined in claim 11.

The idea on which the present invention is based is that of a flexible-elastic storage element arranged in the area of the translation, by means of which the chair in question can be pivoted synchronously or in a synchronous manner, as a force storage element for a predetermined movement sequence when pivoting the backrest support and the coupling coupled therewith via the translation Insert seat support. For this purpose, the flexible-elastic storage element mentioned is coupled to the seat support and the backrest support. When pivoting, the storage member is tensioned and in this way transmits a force which restores the backrest support and the seat support of the carrying device into the upright position.

In this way, the storage member is able to replace a biasing spring in the range of the translation. The structure of the chair can thus advantageously be made significantly slimmer, which has an aesthetic effect and is therefore advantageous from a design point of view. When arranged on the carrying device, the flexible-elastic storage member forms a kinematic chain together with at least one first articulated pivot point of the translation, so that the storage member according to the invention is advantageously integrated into the transmission of movements and torques when the chair according to the invention is loaded and unloaded . The storage element of the translation provided on the carrying device accordingly forms a flat gear.

In addition, such an integration of an energy accumulator with a storage element allows a novel overall design of the chair. In particular, other parts that are movable in the predetermined movement sequence can thus have a certain flexibility. A new path is thus taken with regard to the predetermined sequence of movements when the chair is pivoted. Instead of specifying a movement sequence of the translation of a synchronous mechanism as rigidly as possible, it is now possible to predetermine it Flexibility of individual or multiple parts included in the predetermined sequence of movements. In this case, for example, the seat support of the carrying device can be integrated as part of the storage element and replace articulated pivot points of the kinematic chain with the corresponding flexibility. A flexible design of the parts advantageously allows a particularly slim design and the use of materials that can be easily formed.

The translation is provided in particular as a replacement for a conventional synchronous mechanism and preferably functions in a synchronous manner, so that when pivoting in a predetermined sequence of movements it is described as for a synchronous mechanism. Accordingly, the backrest support and the seat support each pivot in a predetermined manner in absolute terms and relative to one another. The seat support and the backrest support thus pivot differently. Furthermore, the seat support is preferably raised slightly. The functionality of a synchronous mechanism with the known advantages, such as, for example, avoiding the shirt pull-out effect and the like, is thus advantageously retained from the user's perspective.

Compared to a conventional synchronous mechanism, on the other hand, it is special that the storage element designed as a force storage element also undergoes elastic deformation during pivoting backwards due to the increasing build-up of preload and thus also describes a certain movement sequence. Advantageous refinements and developments result from the further subclaims and from the description with reference to the figures of the drawing.

According to the definition in the claims, in addition to the first articulated pivot point, the translation will also have a second articulated pivot point, which are part of the kinematic chain. As a result, the backrest support can be designed to be pivotable relative to two different arms or legs of the storage element, one of these legs being able to form the seat support of the carrying device, for example.

According to the definition in the claims, the flexible-elastic storage element will represent at least two pivot points of the kinematic chain or the storage element will comprise at least two virtual pivot points. In this case, the storage element is, for example, designed to be flexible in such a way that loads on the chair can be converted into elastic material deformations of the storage element by a person sitting down, which can be mechanically reinterpreted as rotations around only virtual pivot points. These virtual fulcrums are arranged along the structure of the storage element, their alignment with the real articulated pivots of the translation forms a polygon and is combined with the articulated pivots of the translation to form the kinematic chain.

As defined in the claims, the translation is coupled to a seat base. The translation thus represents a deflection of force between the backrest support, seat support and seat base and for this purpose has a first and a second pivot point, at least of which the at least one articulated pivot point of the translation is coupled to the seat base and is arranged fixedly relative thereto. Furthermore, the translation will have a first virtual and a second virtual pivot point, which are included in the storage element, in this case the at least one articulated pivot point with a second articulated pivot point arranged on the storage element via a first link and the two virtual pivot points with one another via a second Handlebar coupled, wherein the first link is fixed to the backrest support or integrally formed with the backrest support. This can therefore be a quadrangular, in particular parallelogram-like structure of the translation, each with an articulated pivot point fixed to the seat base and to the seat support. In particular, the translation does not require a sliding joint or a link guide and is therefore free of a link. In this way, the movement sequence of a synchronous mechanism is realized with a very slim design.

In addition, in a further advantageous embodiment, which has the same structure of the translation, the backrest support can be rotatably mounted at the at least one articulated pivot point with respect to the seat base, and the storage element or the seat support connected to it can be articulated at one free end either with the second articulated one Be provided pivot point at which it is rotatably connected to the backrest support is, or be flexibly connected to the backrest support, in particular via a web. In the latter case, the connection of the seat support to the storage element formed a third virtual pivot point and the translation then has only one "real" articulated pivot point, namely the at least one already mentioned above.

In a preferred embodiment of the chair, as already indicated above, the flexible-elastic storage element can be connected to the seat support, molded onto it or provided in one piece with it. In particular, the seat support of the chair can form part of the storage element and, due to its elastic design, form part of the energy storage device, which in turn builds up and provides the restoring force.

Here, the storage member of the translation can be formed with an elastically deformable plastic material, in particular a fiber-reinforced plastic, which shows the flexibly elastic property on the storage member in a suitable manner.

In a preferred embodiment, the storage member with the seat support can have a curved shape which, when the chair is at rest, enclose an acute angle of between 1 ° and 40 °, preferably between 10 ° and 30 °, in particular 25 °

For example, for the intended short-term support of a person sitting on the chair, at least one armrest support can be arranged on the support device on at least one chair side, in particular one armrest support on each chair side, which can be connected to the seat support and / or the backrest support. The armrest supports can also be connected to one another, for example, a common connection can be made underneath the seat support and additionally connected to it. The respective armrest support can be provided for carrying an armrest body or just an armrest cushion. Alternatively, the armrest support can also directly form an armrest body.

According to an advantageous embodiment, the translation has a first stop, which limits a pivoting range of the seat support and backrest support in the upright position such that when the stop is reached, the backrest support and the seat support is in the upright position against the stop-holding bias of the storage member. In particular, the backrest is upright in this position. In this way, a defined position of the backrest support is always guaranteed, even when the chair is not occupied. A preferred location for arranging the stop can be, for example, in the vicinity of the second articulated pivot point, so that the stop is close to the seat support. In this way, for example, a handlebar in contact with the stop would not be subjected to excessive moments.

In another advantageous embodiment, the translation has a second stop, which limits the pivoting range of the seat support and backrest support in a maximum pivoted position and / or the translation can be provided with a locking element, which seat support and backrest support in a selectable pivoted position against at least one Determines the direction of movement. In this way, on the one hand, it can be avoided that the swiveling range to the rear exceeds a maximum swiveling angle, for example of the order of 20 °, and on the other hand, if desired, the dynamics of the chair can also be restricted for a selectable period of time. This restriction or the definition can also refer to both directions of movement.

According to a preferred embodiment, the second articulated pivot point or a third virtual pivot point can be arranged in a rear region and the second virtual pivot point in a front region of the seat carrier, the second link having a greater length and / or a greater inclination than the first link . In this way, when pivoting from the upright to the rearwardly pivoted position in the front region, the seat carrier is raised more than in the rear region, so that the seat carrier is pivoted slightly backwards.

In a preferred development, the length and / or inclination of the first and second links are each provided such that a ratio of a pivoting angle of the backrest support to a pivoting angle of the seat support in the rearwardly pivoted position is 2 to 1 to 4 to 1, in particular 3 to 1 , is. For example in this context, the backrest support can be pivoted backwards by 21 °, while the seat support can be pivoted backwards by 7 °.

An independent height positioning of the sitting position allows, for example, a further development in the chair according to the invention, in which a manipulable height adjustment device is connected to the storage member, which can be actuated via a handle which is arranged and can be gripped in the region of the seat support. It is able to manipulate a height adjustment device, for example in the form of a gas spring, as required, even when the chair is occupied.

In order to allow a decoupled movement of the seat surface relative to the seat support and thus adjustable, different depth positions with respect to the backrest support, a seat element can be arranged on the seat support, which is provided fixable or fixed or is slidably provided along the seat support by a guide means . Such a guide means can be formed, for example, a link or similar guide rail arranged on the seat support (2).

The above refinements and developments can, if appropriate, be combined with one another as desired. Further possible refinements, developments and implementations of the invention also include combinations of features of the invention described above or below with reference to the exemplary embodiments, which are not explicitly mentioned. In particular, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.

CONTENTS OF THE DRAWING

Fig. 1

eine ebene Seitenansicht eines ersten Ausführungsbeispiels eines Stuhls in einer aufrechten Position mit einer Übersetzung mit zwei gelenkigen Drehpunkten;

Fig. 2

eine ebene Seitenansicht eines nicht erfindungsgemäßen Stuhls in einer aufrechten Position mit einer Übersetzung mit nur einem gelenkigen Drehpunkt;

Fig. 3

eine ebene Seitenansicht des Stuhls aus der Fig.1 mit an der Übersetzung zusätzlich erkennbaren virtuellen Drehpunkten;

Fig. 4

eine perspektivische Seitenansicht eines Stuhls mit seiner Sitzbasis und einem Speicherglied, an welchem ein Sitzträger angeordnet ist;

Fig. 5

eine perspektivische Seitenansicht des Stuhls aus der Fig.4, an welchem ein Rückenlehnenträger mit dem Speicherglied verbunden ist;

Fig. 6

eine perspektivische Seitenansicht des Stuhls aus der Fig.5, an welchem ein Sitzträger mit dem Speicherglied verbunden ist;

Fig. 7

eine ebene Seitenansicht des Stuhls aus der Fig.3, mit der Tragreinrichtung einmal in der Ruheposition und einmal in der verschwenkten Position (strichliniert).

The present invention is explained in more detail below with reference to the exemplary embodiments given in the schematic figures of the drawing. It shows:

Fig. 1

a flat side view of a first embodiment of a chair in an upright position with a translation with two articulated pivot points;

Fig. 2

a flat side view of a chair not according to the invention in an upright position with a translation with only one articulated pivot;

Fig. 3

a flat side view of the chair from the Fig. 1 with virtual pivot points recognizable by the translation;

Fig. 4

a perspective side view of a chair with its seat base and a storage member on which a seat support is arranged;

Fig. 5

a perspective side view of the chair from the Fig. 4 , on which a backrest support is connected to the storage member;

Fig. 6

a perspective side view of the chair from the Fig. 5 , on which a seat support is connected to the storage member;

Fig. 7

a flat side view of the chair from the Fig. 3 , with the carrying device once in the rest position and once in the pivoted position (dashed lines).

The accompanying figures of the drawing are intended to provide a further understanding of the embodiments of the invention. They illustrate embodiments and, in connection with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the advantages mentioned result from the drawings. The elements of the drawings are not necessarily shown to scale with respect to one another.

In the figures of the drawing, elements, features and components that are the same, have the same function and have the same effect — unless otherwise stated — are each provided with the same reference symbols.

DESCRIPTION OF EMBODIMENTS

First the Fig. 1 to 3 Turning, they each show a chair designated as a whole by 1, which is designed, for example, as an office swivel chair with a base 35 with rollers 26.

In each of the flat side views of the Fig. 1 to 3 a chair 1 can be seen on which a support device 4 of the chair 1 is arranged on a seat base 9. The support device 4 of the chair is provided with a seat support 2 and a backrest support 3 and with a translation 5 coupling the seat support 2 with the backrest support 3. The translation 5 allows the backrest support 3 and the seat support 2 to be pivoted between an upright and a pivoted-back position with a predetermined sequence of movements.

A flexible-elastic storage element 8 is provided and set up on the transmission 5, which provides a force which restores the upright position when the carrying device 4 is acted upon, and the flexible-elastic storage member 8 also forms a joint with at least one first articulated pivot point 10 of the transmission 5 kinematic chain 15.

The kinematic chain 15 mentioned is the feature of the system formed by the transmission 5, which represents a transmission and is responsible for the transmission of movements and torques. This is best based on the Fig. 3 understandable who the chair of Fig. 1 shows both with its first articulated pivot point 10 and its second articulated pivot point 11, as well as the further virtual pivot points 12, 13 that are present in the structure of the storage element 8 and by which rotational movements the flexible-elastic storage element 8 performs due to its shape in the Interaction with its material properties is able.

You can also see the chairs 1 of the Fig. 1 and 3rd also that the first articulated pivot point 10 of the transmission 5 is coupled to the seat base 9 and is fixedly arranged relative to the latter. The translation 5 has a first virtual and a second virtual Pivot point 12, 13, which are encompassed by the storage element 8, and the first articulated pivot point 10 is coupled to the second articulation pivot point 11 arranged on the storage element 8 via a first link 16, indicated by the dashed-line connection of the two articulated pivot points 10, 11 in the Fig. 1 and 3rd . The two virtual pivot points 12, 13 are also coupled to one another, specifically via a second link 16, only illustrated in FIG Fig. 3 by dashed lines. The dashed-line connection of the second articulated pivot point 11 to the one of the virtual pivot points 12 is only intended to make their coupling to the kinematic chain 15 clear. The mentioned first link 16 is firmly connected to the backrest support 3, in the Fig. 1 and 3rd it is even integrally formed with the backrest support 3.

In contrast, you can see in the Fig. 2 a chair 1 according to the invention, in which compared to the representations of the Fig. 1 and 3rd the second articulated pivot point 11 is replaced by a third virtual pivot point 14 at approximately the same location on the storage element 8 or seat support 2, which, like the other virtual pivot points 12, 13, is integrated into the structure of the storage element 8, so that the kinematic Chain 15 remains intact. In this exemplary embodiment, there are therefore three virtual pivot points 12, 13, 14 and only one "real" articulated pivot point 10 on the flexible-elastic storage element 8, which comply with the requirements of shape and material properties. The ability to be represented in virtual pivot points 12, 13, 14 of the storage element 8 of the translation 5 on the chair 1 of the Fig. 2 is, as before with the Fig. 1 and 3rd the formation of the storage member 8 in an elastic deformable material, here a fiber-reinforced plastic material. This can be formed by a polyamide, for example.

Now look at that Fig. 4 to 7 you can see in the Fig. 4 First, a partially constructed chair 1 according to the invention, the seat base 9 of which supports the carrying device 4 of the chair 1 against the stand 35, which is designed as a swivel foot, with rollers 26 and which is coupled to a height-adjustable compression spring section for this purpose.

Chair 1 is partially constructed in the Fig. 4 in such respects, as initially only the storage element 8, which provides the transmission 5, is shown on the carrying device 4 and is permanently connected to the seat base 9. In the perspective view of the Fig. 4 recognizes that the storage element 8 has a kind of curved frame 18, the frame sections 18a-18d of which surround a recess 19. In an imaginary flat projection from the side, similar to the views of the Fig. 7 , The two frame sections 18b, 18c assigned to the chair sides each form a curved frame side with an upper and a lower leg 20, 21, of which the lower leg 21 will form the second link 16 of the kinematic chain 15 to be assembled on the chair. Here, the storage member 8, which has a curved shape in the above-mentioned projection, encloses an acute angle of the order of 25 ° in the rest position of the chair 1 with the two legs 20, 21.

Applying a bias to the memory element 8, this is in the Fig. 5 coupled to the backrest support 3 at two articulated pivot points 10, 11, which are connected by the first link 16 as part of the backrest support 3. In the Fig. 6 the chair 1 is also provided with a seat support 2, so that the seat support 2 and the backrest support 3 are coupled via the transmission 5 of the storage element 8. It can also be seen that the backrest support 3 is rotatably mounted at the at least one articulated pivot point 10 with respect to the seat base 9 and that the storage element 8 or the seat support 2 connected to it is provided with the second articulated pivot point 11 in an end region of its upper leg 20 is on which this is rotatably connected to the backrest support 3.

In the non-inventive chair of the execution of the Fig. 2 is the coupling of this end portion of the upper leg 20 of the storage member 8 is not as in the Fig. 5 to 7 Realized via a second articulated pivot point 11, but via a further virtual pivot point 15, so that the storage element 8 or the seat support 2 arranged thereon is connected in a rotationally fixed manner to the backrest support 3 via a web 22. In the Fig. 2 it can further be seen that the mentioned web 22 then forms the first link 16, which, in contrast to the exemplary embodiments with two articulated pivot points 10, 11, is not “directly” part of the backrest support. But because of the chair Fig. 2 recognizable, the storage element 8 is formed in one piece with the backrest support 3, the first link 16 is at least in this sense designed as part of the backrest support 3. The upper leg 20 of the storage member 8 is with its free end, the web 22 and the Handlebar 16 forms, by applying the pretension to the articulated pivot point 10 located in the area of the seat base 9.

Further is in the Fig. 5 and 6 also shown that the backrest support 3 is essentially formed by a backrest frame 30, which in turn encircles a recess 31 and can, for example, carry upholstery (not shown) or else a textile braid.

From the Fig. 6 it can be seen that in the present case the flexible-elastic storage element 8 is connected to the seat support 2, which in turn is connected to one in the Fig. 7 Seat cushion 32 shown can be equipped as a seat element. The sliding guidance of the seat element is not shown here.

The translation 5 of the storage member 8 determines the sequence of movements of the carrying device with the seat support 2 and the backrest support 3 when pivoting from the upright position into a rearwardly pivoted position, as is common in the Fig. 7 are shown, the latter position being shown in dashed lines. The storage member 8 is obviously designed and arranged in such a way that it enables the movement sequence of the seat support 2 and the backrest support 3 which is predetermined by the translation 5. In addition, the storage member 8 provides the restoring force in the upright position, namely over the entire movement sequence, moreover this force is also present in the upright position due to the coupling under pretension.

Now back to all figures, especially the Fig. 3 and 7 Referring, it becomes clear that when the respective chair 1 is loaded, for example by a person sitting on it, the backrest support 3 is pivoted backwards by a pivoting angle, as is particularly well the case Fig. 7 can be seen. Together with the backrest support 3, the first link 16, which extends between the first and the second articulated pivot point 10, 11, is pivoted by the same angle. Due to the inclination of the first link 16 and the seat support 2, and thus the storage element 8, the second link 17 is also pivoted.

Both handlebars 16 and 17 are inclined forward both in the upright position and in the pivoted-back position, so that a weight force of a person sitting on the chair 1 brings about a restoring moment and the storage element 8 designed as a force storage element therefore only has to work against the backrest force . The position pivoted backwards is achieved in that a person sitting on the chair 1 leans back and thus applies a backrest force to the backrest support 3, which overcomes a spring force of the storage element 8.

The seat surface formed by the seat support 2 provided with a seat cushion 32 is somewhat raised overall and additionally also pivoted, but to a significantly lesser extent compared to the backrest support 3. The memory element 8 is, as is also best in the Fig. 7 recognizes, in its tensioned state, loaded both on pressure and on bending and thus elastically compressed and bent. The position of the support device 4 pivoted backwards is achieved by a person sitting on the chair 1 leaning backwards and thus applying a backrest force to the backrest support 3, which overcomes a spring force of the storage element 8.

Despite a large swivel range possible with the designs of the figures, all visible components of the chair 1, in particular the backrest support 3, the first link 13, the seat base 9 and the second link 14 and the seat support 2 are very slim. The same applies to the storage element 8. In addition, no further components are arranged between the seat support 2 and the seat base 9 or between the seat support 2 and the backrest support 3. In this way, an overall slim design is created without losing functionality compared to a conventional synchronous mechanism.

Not shown in the drawing figures is a first stop restricting the pivoting range of the seat support 2 and backrest support 3 in the upright position and a second stop restricting the pivoting range of the seat support 2 and backrest support 3 in the pivoted position. These are in the area of the first or, if present, second articulated pivot point 10, 11 in the form of stop wedges provided, which are supported in the upright position and in the pivoted position at suitable points.

The stops are arranged and designed such that, when the first stop is reached, there is still a pretension of the storage element 8 holding the backrest support 3 and the seat support 2 in the upright position. In this way, a defined position of the translation 5, the seat support 2 and the backrest support 3 is ensured, for example, even in the upright position.

Although the present invention has been completely described above on the basis of preferred exemplary embodiments, it is not restricted to these but can be modified in a variety of ways within the scope of the patent claims.

Reference list

1

chair

2nd

Seat support

3rd

Backrest support

4th

Carrying device

5

translation

8th

Storage member

9

Seat base

10th

first pivot point

11

second pivot point

12th

Another or first virtual pivot point

13

another or second virtual pivot point

14

another or third virtual pivot point

15

kinematic chain

16

first driver

17th

second handlebar

18th

Frame part

18a-18d

Frame sections

19th

Recess

20

upper leg

21st

lower leg

22

web

25th

Locking element

26

role

27

Height adjustment device

30th

Backrest frame

31

Recess

32

Seat pad

35

Pedestal

Claims (12)

1. Chair (1), in particular a conference chair or office chair, having a seat base (9) on which a carrier device (4) of the chair (1) is arranged, wherein:

   - the carrier device (4) comprises at least one seat carrier (2) and at least one backrest carrier (3),

   - the carrier device (4) is provided with a transmission arrangement (5) that couples the seat carrier (2) to the backrest carrier, said transmission arrangement rendering it possible for the backrest carrier (3) and the seat carrier (2) to pivot with a predetermined movement sequence between an upright position and a position that is pivoted rearwards,

   - a flexible-elastic storage element (8) is provided and configured on the transmission arrangement (5), said storage element providing a returning force into the upright position when the carrier device (4) is influenced

   the flexible elastic storage element (8) together with at least one first articulated rotary point (10) of the transmission arrangement (5) forms a kinematic chain (15), wherein the at least one articulated rotary point (10) of the transmission arrangement (5) is coupled to the seat base (9) and is arranged fixed relative to said seat base and wherein the transmission arrangement (5) comprises a first virtual rotary point and a second virtual rotary point (12, 13), which are encompassed by the storage element (8), wherein the at least one articulated rotary point (10) is coupled to a second articulated rotary point (11), which is arranged on the storage element (8), via a first connecting link (16) and the two virtual rotary points (12, 13) are coupled to one another via a second connecting link (17), wherein the first connecting link (16) is fixedly connected to the backrest carrier (3) or is embodied integrally with the backrest carrier (3).
2. Chair according to Claim 1,
   wherein the backrest carrier (3) is rotatably mounted on the at least one articulated rotary point (10) in relation to the seat base (9) and the storage element (8) or the seat carrier (2) that is connected to said storage element is provided on a free end either with the second articulated rotary point (11) on which this storage element or seat carrier is rotatably connected to the backrest carrier (3), or is flexibly connected to the backrest carrier (3), in particular via a connecting piece (17).
3. Chair according to Claim 1 or 2,
   wherein the flexible elastic storage element (8) is connected to the seat carrier (2), is moulded on to said seat carrier or is embodied as a single part with said seat carrier.
4. Chair according to any one of the preceding claims,
   wherein the storage element (8) of the transmission arrangement (5) is embodied with an elastic deformable synthetic material, in particular a fibre-reinforced synthetic material.
5. Chair according to any one of the preceding claims,
   wherein the storage element (8) comprises a curved shape that in the resting position of the chair (1) includes an approximately acute angle between 1° and 40°, preferably between 10° and 30°, in particular of 25°.
6. Chair according to any one of the preceding claims,
   wherein at least one armrest carrier (18) is arranged on the carrier device (4) on at least one chair side, in particular an armrest carrier (18) is arranged respectively on each chair side, said armrest carrier or carriers being connected to the seat carrier (2) and/or to the backrest carrier (3).
7. Chair according to any one of the preceding claims,
   wherein the transmission arrangement (5) comprises a first stop, which limits a pivoting range of the seat carrier (2) and backrest carrier (3) in the upright position in such a manner that when the stop is reached, a pre-tension of the storage element (8) is present that holds the backrest carrier (3) and the seat carrier (2) in the upright position on the stop.
8. Chair according to any one of the preceding claims,
   wherein the transmission arrangement (5) comprises a second stop, which limits the pivoting range of the seat carrier (2) and backrest carrier (3) in a maximum pivoted position and/or is provided with a blocking element (21), which fixes the seat carrier (2) and backrest carrier (3) in a selectable pivoted position against at least one movement direction.
9. Chair according to any one of the preceding claims,
   wherein the length and/or incline of the first and second connecting link (16, 17) respectively are provided in such a manner that a ratio of a pivoting angle of the backrest carrier (3) to a pivoting angle of the seat carrier (2) in the pivoted rearwards position is 2 to 1 up until 4 to 1, in particular 3 to 1.
10. Chair according to any one of the preceding claims,
    wherein a manipulatable height adjusting device (27) is provided and configured, which may be actuated via a handle that is arranged in the region of the seat carrier (2) and may be gripped; and/or
    wherein a seat element is arranged on the seat carrier (2) and said seat element may be fixed or is fixed or is provided so that it may be displaced along the seat carrier (2) by means of a set of guiding means.
11. Method for producing a chair (1), in particular a chair according to any one of the preceding claims, having the steps:

    providing a carrier device (4) having a seat carrier (2), a backrest carrier (3) and a transmission arrangement (5) that couples the seat carrier (2) to the backrest carrier (3), said transmission arrangement rendering it possible for the backrest carrier (3) and the seat carrier (2) to pivot with a predetermined movement sequence between an upright position and a position that is pivoted rearwards;

    coupling a storage element (8) that is provided and configured on the transmission arrangement (5) to the carrier device (4) in such a manner that the predetermined movement sequence is rendered possible and a returning force in the upright position is provided by means of the storage element (8), wherein a kinematic chain (14) is formed by means of the flexible elastic storage element (8) with at least one first articulated rotary point (10) of the transmission arrangement (5),

    wherein the at least one articulated rotary point (10) of the transmission arrangement (5) is coupled to the seat base (9) and is fixedly arranged relative to said seat base and wherein the transmission arrangement (5) comprises a first virtual rotary point and a second virtual rotary point (12, 13), which are encompassed by the storage element (8), wherein the at least one articulated rotary point (10) is coupled to a second articulated rotary point (11), which is arranged on the storage element (8), via a first connecting link (16) and the two virtual rotary points (12, 13) are coupled to one another via a second connecting link (17), wherein the first connecting link (16) is fixedly connected to the backrest carrier (3) or is embodied integrally with the backrest carrier (3).
12. Method according to Claim 11,
    wherein the storage element (8) comprises at least in a planar projection a curved shape having two limbs (20, 21) that are connected to the backrest carrier (3) at respectively one articulated rotary point (10, 11).

Images