EP2520199A1 - Seating - Google Patents

Abstract

The seat (1) has a seat plate (2) and a backrest (3) that are arranged in a sub-frame (4). The backrest is moved relative to the seat plate in rear side of the sub-frame and positioned away from the seat plate such that to and fro movement of the backrest is possible. A pivot joint (6) is arranged between the sub-frame and seat plate for enabling to and fro movement of the seat plate and backrest. The pivot joint is viewed from downward direction between the side edges of the seat plate in operating position.

Description

The present invention relates to a chair, in particular office chair, with at least one seat plate and at least one backrest and with at least one base frame which supports the seat plate and the backrest, wherein at least the backrest relative to the underframe to the rear, ie away from the seat plate, and after at the front, that is to say, can be swiveled back and forth, and at least one swivel joint for lateral pivoting of the seat plate and the backrest is arranged between the lower frame and the seat plate.

Seating or office chairs of this kind are from the EP 1 946 676 A1 known. They allow the backrest to be pivoted forwards and backwards as well as the side pivoting of the backrest and seat plate.

goal of EP 1 946 676 A1 it is that the one side of the seat during the lateral pivotal movement of the seat is movable independently of the other side of the seat. For this purpose, the corresponding pivot joints are attached directly to the edges of the seat plate. This means on the one hand design restrictions. On the other hand, the construction is also expensive, since at least one pivot joint for lateral pivoting is necessary on both edges.

The object of the invention is to propose an improvement to eliminate the disadvantages mentioned.

This is achieved by the pivot joint, seen in an operating position in a view from below, preferably exclusively, is arranged centrally between lateral edges of the seat plate.

Due to the lateral pivotability of the seat plate and the backrest of the person sitting on the chair or its seat plate person given a chance during sitting to move the buttocks and thus the spine by pivoting the seat plate. Active sitting is thus made possible by which the spine can be moved while sitting, which strengthens the musculature and relieves or avoids back problems. Due to the central arrangement of the pivot joint between the lateral edges of the seat plate, the lateral pivoting movement of the seat plate and the backrest by means of a single, centrally arranged in this sense, pivot joint can be realized. It can therefore be dispensed with additional additional pivot joints. This results in a structurally simpler structure, which also opens up a variety of design options, since the centrally located between the lateral edges pivot joint is hardly perceived optically.

The terms front, back and side are defined with respect to the seat plate. The front part of the seat plate is the part of the seat plate which faces away from the backrest. The rear part of the seat plate faces the backrest. The lateral edges indicate the lateral boundaries of the seat plate, which may also be attached to armrests where appropriate. A lateral swinging back and forth of the seat plate in this context means that the seat plate can be pivoted in the direction of its lateral edges, ie in a transverse direction, transversely, preferably orthogonal to the forward and rearward pivoting directions of the backrest. A seat plate is a plate-like structure, which may optionally be padded. Seat plate according to the invention is not a surface of a gymnastics ball or the like. For the sake of completeness, it should be noted that the seat plate is conveniently a one-piece plate-like structure which provides the entire seating surface of the seat. The seat plate is conveniently so not constructed in two or more parts.

Under the backrest that part of the chair is understood, which serves the leaning of the back of the person sitting on the seat plate. The undercarriage of the chair is that part which carries seat plate and backrest and is placed in the normal operating position on the ground. The operating position is the position of the seat in which a person can sit on the seat plate.

Preferred embodiments of the invention provide that the seat plate in addition to the backrest and back to the front and forth swiveled, preferably on the base, is stored. In this context, it may be provided that the seat plate is forcibly coupled with respect to its back and forth pivoting backwards and forwards with the backrest with respect to their back and forth pivoting backwards and forwards to synchronize these pivoting movements. The synchronization means that upon pivoting of the backrest, the seat plate is forcibly pivoted in the same direction. Such a synchronization is known per se in the prior art and can be implemented in the most varied embodiments to the front and rear and / or in lateral directions.

Conveniently, it is provided that the pivot joint is seen in the operating position in the view from below, at a rear, the backrest facing half of the seat plate is arranged.

A first group of embodiments of the invention provides that the seat has at least one additional pivot joint for laterally pivoting the seat plate and the backrest, which seen in the operating position in the view from below, in a front, facing away from the back half the seat plate is arranged.

Other embodiments of the invention provide that the seating only has exactly one pivot joint for lateral pivoting back and forth of the seat plate. Here, it is advantageous if the pivot joint in a, preferably the backrest facing, half of the seat plate is arranged and the seat plate in the other, preferably remote from the backrest, half of the seat plate is fixed to the base frame, wherein the seat plate for lateral Hin- and pivoting is formed twistable. The pivot joints for lateral pivoting of the seat plate may be formed in a variety of embodiments. For example, it is conceivable that the pivot joint or at least one of the pivot joints as an axle joint, so as a pivotable about a fixed axis joint is formed. As alternatives but also axleless bending joints or ball joints are exemplary.

In order to limit or adjust the pivot angle during the lateral pivoting of the seat plate, is conveniently provided that the seating, preferably the and / or each pivot, at least one, preferably adjustable, stop for limiting a maximum possible lateral pivot angle. The attacks can be made fixed. Then they form a non-adjustable limit. The attacks can also be designed adjustable. Then the maximum possible swivel angle can be set. In particular, with adjustable stops and a lock is possible in which a lateral pivoting of the seat plate is completely prevented.

To give sitting on the seat plate person despite the possibility of lateral pivoting of the seat plate to give a secure seating experience, it is advantageous if the seating, preferably the and / or each pivot, at least one, preferably adjustable and / or interchangeable, damping body for damping the having lateral pivoting movement of the seat plate. As damping body come as elastomeric body, springs, gas pressure pad, filled with liquids pillow and the like in question. The damping behavior of the damping body can be adjusted or adjustable, for example by changing the spring properties of a spring used as a damping body by appropriate measures or changes the pressure in a gas or liquid cushion. Different damping properties But can also be achieved by forming the damping body exchangeable and then just use damping body with different damping properties.

In order to equip the seating with different seat plates, it is convenient not to integrate the pivoting intended mechanism as possible in the seat plate. In this sense, preferred embodiments of the invention provide that the pivot joint, preferably also the additional pivot joint, below the seat plate and spaced therefrom is arranged.

In order to achieve so-called automatic weight control, preferred variants of the invention provide that the backrest is connected by means of at least one support arm to a joint, preferably in the form of the pivot joint, for back and forth back and forth pivoting of the backrest and the support arm by means of a Trägerarmschwenkgelenks is connected to the seat plate and in an unloaded operating position of the seat a horizontal distance X between the center of the joint and the center of the Trägerarmschwenkgelenks with a horizontal distance Y between the center of the Trägerarmschwenkgelenks and a frontmost leaning of the backrest in a ratio between 1 to 1 and 1 to 2.8, preferably between 1 to 1.7 and 1 to 1.9, stands. An automatic weight means, in this context, that the resistance forces applied by the seating or its mechanism against pivoting of the seat plate and / or backrest automatically adapts to the weight of the person sitting on the seat furniture or the seat plate. The automatic weight is achieved in the manner described by an appropriate vote of the two horizontal distances X and Y to each other. The foremost leaning of the backrest can also be referred to as a so-called lordosis or Lumbalabstützpunkt. It is that point of the backrest that protrudes furthest towards the front half of the seat panel, that is, the point at which the back of the person sitting on the chair first comes into contact with the seat back. if the Backrest is curved towards its lateral edges, so this leaning point is to be determined centrally between the lateral edges of the backrest.

• Fig. 1 bis 4 Darstellungen zu einem ersten erfindungsgemäßen Ausführungsbeispiel;
• Fig. 5 die Darstellung eines zweiten erfindungsgemäßen Ausführungsbeispiel;
• Fig. 6 eine Darstellung zu einem dritten erfindungsgemäßen Ausführungsbeispiel;
• Fig. 6a eine Detaildarstellung zu einem vierten erfindungsgemäßen Ausführungsbeispiel;
• Fig. 7 eine Darstellung zu einem fünften erfindungsgemäßen Ausführungsbeispiel und
• Fig. 8 ein sechstes erfindungsgemäßes Ausführungsbeispiel.

Further features and details of preferred embodiments of the invention will be explained with reference to the description of the figures. Show it:

• Fig. 1 to 4 Representations of a first embodiment of the invention;
• Fig. 5 the representation of a second embodiment of the invention;
• Fig. 6 a representation of a third embodiment of the invention;
• Fig. 6a a detailed view of a fourth embodiment of the invention;
• Fig. 7 an illustration of a fifth embodiment of the invention and
• Fig. 8 a sixth embodiment of the invention.

In Fig. 1 an inventive seating 1 is shown in the form of an office chair. The seat plate 2 is, as well as in corresponding representations to the following embodiments, partially drawn, so that the components located under the seat plate 2 are better visible.

The undercarriage 4 of this embodiment, as known per se, an optionally telescopically in height column 14, from the star-shaped feet 16 protrude. To make the office chair 1 rollable, 16 rollers 17 are arranged on the feet. The upper end of the base 4 shown here is formed by the column head 15 to which the remaining components of the chair 1 are attached. Thus, the base 4 carries both the seat plate 2 and the backrest 3. For the sake of completeness, it should be noted that the illustrated embodiment of the base 4 is of course only an example and the base 4 may be formed in all possible other ways.

The backrest 3 is arranged in the illustrated embodiment on a support arm 18 which is pivotally mounted on the joint 33 on the below-mentioned joint part 25 and thus on the column head 15 and the lower frame 4. The hinge 33 allows in this embodiment, the back and forth pivoting the backrest 3 forward in the direction of the seat plate 2 and in the opposite direction to the rear. This pivoting possibilities of the backrest are illustrated by the double arrow 5. As a resilient counterforce for this pivoting of the backrest 3, a pair of bending springs 19 are provided in the embodiment shown, which are fastened via the yoke 20 on the base frame 4 and column head 15. In the illustrated embodiment, the bending springs 19 are known leaf springs which build up a corresponding opposing force when the backrest 3 is pivoted backwards in the direction away from the seat plate. The bending springs 19 thus ensure the provision of the backrest 3 in the Fig. 1 shown starting position when sitting on the seat plate 2 person no longer leaning against the backrest 3. The two joints 23 and 33 are connected to each other by means of an intermediate leg 32. By this construction by means of the intermediate leg 32 and the joints 23 and 33, a length compensation possibility for the shortening of the bending springs 19 is created in the bending thereof via the joint 23. As shown below, this construction can also be replaced by a single joint.

In the embodiment shown, the seat plate 2 is pivotable together with the backrest 3 in the longitudinal direction, that is, forwards and backwards. This is illustrated by the double arrow 5 on the seat plate 2. This pivotability of the seat plate 2 forward and backward is synchronized with the pivoting of the backrest 3 in these directions. In the illustrated embodiment, this is done via a slot guide. For this purpose, two elongated holes 21 are secured by means of the elongated hole carrier 30 on the underside of the seat plate 2. On the support arm 18 and its tab (s) 31, a bolt 22 is fixed, which is guided in the slots 21.

Synchronization of the pivoting movement of the backrest 3 and the seat plate 2 in the longitudinal direction according to the double arrows 5. In the present case, the rear half 10 of the seat plate 2 forcibly lowered by the realized synchronization when the backrest 3 to the rear, ie from the seat plate 2 is deflected away. Generally speaking, it is thus advantageously provided that the backrest 3 is connected by means of at least one support arm 18 with the pivot joint 6 and the support arm 18 by means of at least one elongated hole 21 slidably mounted on the, preferably, seen in the operating position, under the seat plate 2. The slot 21 and the slots 21 are conveniently located under the rear, the backrest 3 facing half 10 of the seat plate 2. This has the advantage that the front half 9 of the seat plate 2 is not raised when the backrest 3 and the seat plate 2 are pivoted synchronously to the rear.

For the sake of completeness it is pointed out that the seat plate 2 in the sense of the invention does not necessarily have to be pivotable in the longitudinal direction, that is to say as indicated by the double arrow 5. Even in the case that this pivotability is given, not necessarily a synchronization with the pivotal movement of the backrest 3 must be done.

According to the invention is now in the seating 1 shown in accordance with Fig. 1 a, preferably mechanically coupled, lateral swinging back and forth of the seat plate 2 and the backrest 3 possible, as indicated by the double arrows 8. To realize this pivoting possibilities to the sides of the seat plate 2, are in the first embodiment according to Fig. 1 two pivot joints 6 and 7 are provided. The front pivot joint 7 is fastened on the one hand with its one hinge part 25 on the front half 9 of the seat plate 2. The other joint part 26 is fixed to the column head 15 and thus to the lower frame 4. The two hinge parts 25 and 26 are mounted on the axle 24 against each other pivotally to each other. To damp this pivoting movement is arranged between the joint parts 25 and 26 of the running here as an elastomer body damping body 12.

The rear pivot joint 6 is located on the one hand centrally between the lateral edges 34 of the seat plate 2 and on the other hand below the rear half 10 of the seat plate 2. To illustrate the front and rear half 9 and 10 of the seat plate 2, the imaginary dividing line 13 between these two halves is located , The rear pivot joint 6 has two joint parts 25 and 26. The joint part 26 is in turn fixedly connected to the column head 15 and the base 4. The joint part 25 is pivotally attached to the hinge part 26 via the axle pin 24. The rear half 10 of the seat plate 2 is with the interposition of the slot carrier 30 of the bolt 22 of the support arms 18 and the joint 23, that is indirectly attached to the hinge part 25. Also located between the mutually pivotable joint parts 25 and 26 of the pivot joint 6, which is also designed as an axle joint, there is a damping body 12 which damps the lateral pivoting of the seat plate 2 and thus also the backrest 3 in the direction of the double arrow 8. To limit the pivot angle of this pivotal movement 6 stops 11 are arranged in the embodiment shown at the rear pivot. In the variant shown, the stops 11 are screws and thus adjustable stops. By appropriate adjustment of the stops 11 thus the maximum possible angle of the lateral pivoting of the seat plate can be adjusted. In the illustrated embodiment, the stops 11 even allow a locking of the rear pivot joint 6. In the locked position, a lateral pivoting of the seat plate 2 along the double arrows 8 is completely prevented. The damping body 12 of both the front and the rear pivot joint 6 and 7 are interchangeable in the illustrated embodiment, whereby the damping properties can be changed. For the sake of completeness it should be pointed out that pivot joints 6 and / or 7 are also conceivable, which manage completely without damping body 12. In this case, then the damping can be achieved by means of bending springs 19, for example via the torsion. Also, the attacks 11 may be waived if necessary. But it can just as well with both pivot joints 6 and 7 corresponding stops 11 may be provided, as in the illustrated embodiment also realized. This is especially good in the Fig. 2 , So to see a side view of the seat plate 2. Here you can also see the stops 11 of the front pivot joint 7, which are also designed as adjustable screws. In Fig. 2 is also the formation of the pivot joints used in the first embodiment 6 and 7 as axle joints, each with the axle pin 24 can be seen.

For the sake of completeness, it should be pointed out that the spring action of the spiral spring (s) 19 in this first embodiment, as well as in the other embodiments, can be made adjustable by measures known per se. So it is e.g. conceivable to realize corresponding manually adjustable possibilities, which e.g. a setting in three stages, strong, medium, weak the spring characteristics of the bending spring 19 allowed.

In Fig. 2 It should also be noted that the intermediate leg 32 is shown partially in dashed lines, since it is partially hidden behind the support arm 18 in the illustration shown.

In Fig. 2 are also the horizontal distances X and Y located. Stand these in a relationship already mentioned above, the seating 1 is equipped with a so-called automatic weight. The horizontal distance X is measured between the center of the joint 33 and the center of the Trägerarmschwenkgelenkes. The Trägerarmschwenkgelenk is formed in the illustrated embodiment by the guided in the slot 21 bolt 22. The horizontal distance Y is measured in the manner shown between this Trägerarmschwenkgelenk and the foremost leaning point 29 of the backrest 3. For the sake of completeness, it should be noted that these distances X and Y are measured in a state in which the chair 1 is in an unloaded operating state, in which neither the seat plate 2 nor the backrest 3 by a seated on the chair 1 person or otherwise deflected or loaded.

Fig. 2a shows a schematic plan view of the seat plate 2. First, the imaginary dividing line 13 and the front half 9 and the rear half 10 of the seat plate 2. Also marked are the lateral edges 34, between which the not visible here pivot joint 6 is arranged centrally , The central arrangement is illustrated by the center line 35. The pivot joint 6 and preferably also the additional pivot joint 7 are therefore arranged centrally in the region of this center line 35 between the lateral edges 34 of the seat plate 2.

Fig. 3 to illustrate the previously said still a view from the rear from the direction of AA on the rear pivot joint. 6 Fig. 4 shows a view from direction BB from the front on the front pivot joint. 7

In Fig. 5 Now, a second embodiment according to the invention of a chair 1 or office chair is shown. This largely corresponds to the first exemplary embodiment, so that in order to avoid repetition, reference can essentially be made to the above descriptions of the first exemplary embodiment. In the following, only the differences from the first embodiment will be discussed. These consist essentially in the fact that the front half 9 of the seat plate 2 is not connected via the pivot joint 7, but via the rigid connection 27 with the base frame 4 or its column head 15. The lateral pivoting of the seat plate 2 and thus the backrest 3 along the double arrow 8 is still given in this embodiment, as still the rear pivot joint 6 is present and the seat plate 2 of this embodiment for lateral swinging back and forth in the direction of the double arrow. 8 is formed twistable in itself. The seat plate 2 thus has a certain flexibility or elasticity, which allows despite the rigid attachment of the front half 9 of the seat plate 2 on the base 4, the lateral swinging back and forth according to the invention.

In Fig. 6 a third embodiment of the invention is illustrated. However, here in analogy to Fig. 2 only the area of the seat plate 2 and its closer environment shown. The rest of the design of the chair 1 can be realized as in the first embodiment.

In this third embodiment, in turn, two pivot joints 6 and 7 are present. However, these are not designed as axle joints but as axleless bending joints. In the embodiment shown, the hinge parts 25 and 26 are each designed as a rigid body. Between them is in each case an elastic damping body 12, which fulfills a dual function here. On the one hand, he allows the side swinging back and forth of the seat plate 2 in directions of the double arrow 8 not shown here. On the other hand, it also dampens this pivoting movement at the same time. The damping body 12 may be e.g. be attached by bonding between the joint parts 25 and 26.

In Fig. 6a a fourth embodiment of the invention is shown, which is based essentially on the variant according to Fig. 6 based. However, here the area of the pivot joint 6 is even further simplified. In contrast to the variant according to Fig. 6 is in the variant according to Fig. 6a the hinge part 25 of the pivot joint 6 rigidly arranged on the support arm 18 and integrated in this. The damping body 12 has in this embodiment according to Fig. 6a then a total of three tasks. It allows the lateral pivoting in the transverse directions 8, the pivoting back and forth in the direction of the double arrows 5 and additionally ensures the damping of this pivoting movement.

In Fig. 6a are also once again the horizontal distances X and Y located, which are also in the aforementioned ratio ranges, in order to realize a weight automatic also in this variant. In Fig. 6a replaced the pivot joint 6, as I said, the joint 33, so that here the horizontal distance X from the center of the executed as a bending joint pivot joint 6 must be measured. For the sake of completeness it is still to be stated that in Fig. 6a the first leaning point 29 of the backrest 3 is not shown. He will, however, as in Fig. 2 shown, determined.

Furthermore, it is also noted that also in the variant according to Fig. 6 the ratios between horizontal distances X and Y are maintained in such a way that a weight automatic is realized.

In Fig. 7 a fifth alternative according to the invention is shown. Only one alternative of region C is shown Fig. 6 and thus the third embodiment. Here, the rear pivot 6 is not designed as achslosen bending joint but as a ball joint. Shown is the ball joint in a sectional view. The two joint parts 25 and 26 and the ball head 28 connecting them, which in the exemplary embodiment shown is fixedly connected to the joint part 25 and the support arm 18 arranged thereon, can be seen. The spherical head receptacle is in this embodiment in fixed to the base 4 and the column head 15 connected joint part 26. The ball joint allows both the lateral pivotal movement in the direction of the double arrows 8 and the pivotal movement of the seat plate 2 and the backrest 3 forward and back according to of the double arrow 5. This can be dispensed with the joints 23 and 33 in this embodiment. Fig. 7 is of course only one embodiment of the use of a ball joint. Ball head and ball head receptacle can of course be arranged reversed. In addition, the ball joint can also accept all other known embodiments of ball joints, as long as they are used in a corresponding manner. The remaining components of the chair 1 of this fourth embodiment according to Fig. 7 can be realized, for example, as in one of the other embodiments described here. This is especially true for the connection between the front half 9 of the seat plate 2 and the base 4 and for the automatic weight.

Fig. 8 now shows a sixth embodiment of the invention. Again, only on the specifics or differences of this embodiment the previously described embodiments received. The main difference to the previously described embodiments is the design of the here bent C-shaped bending spring 19. It connects the front half 9 of the seat plate 2 with the column head 15 and thus with the base 4. The spiral spring 19 can pivot forward and backward of the backrest 3 and seat plate 2 and also provides the corresponding counter-forces or restoring forces with respect to this pivoting motion available. Furthermore, this bending spring 19 can be regarded as a front pivot joint 7, depending on the embodiment, if it allows a corresponding lateral swinging back and forth along the double arrows 8 of the seat plate 2. If the spiral spring 19 of this embodiment is not twistable or movable in this direction, the lateral pivoting of the seat plate 2 in the direction of the double arrows 8 is also realized in this embodiment by the rear pivot joint 6 and a corresponding twistability of the seat plate 2.

Of course, the invention is not limited to the exemplary embodiments shown here by way of example. It is rather pointed out that the individual features described here with reference to various exemplary embodiments can also be combined in another form in order to form further seating furniture 1 according to the invention. Of course, further embodiments of the invention are also possible beyond.

Legend to the reference numbers:

1

seating

2

seat plate

3

backrest

4

undercarriage

5

double arrow

6

pivot

7

pivot

8th

transversely

9

front half

10

rear half

11

attack

12

damping body

13

imaginary dividing line

14

pillar

15

column head

16

feet

17

role

18

support arm

19

bending spring

20

yoke

21

Long hole

22

bolt

23

joint

24

axle

25

joint part

26

joint part

27

rigid connection

28

ball head

29

foremost leaning point

30

Slot carrier

31

flap

32

intermediate leg

33

joint

34

lateral edge

35

center line

Claims (15)

Seating furniture (1), in particular an office chair, with at least one seat panel (2) and at least one backrest (3) and with at least one underframe (4) which supports the seat panel (2) and the backrest (3), wherein at least the backrest ( 3) relative to the underframe (4) to the rear, ie away from the seat plate (2), and forward, so to this, back and forth, and between the base (4) and the seat plate (2) at least one Swivel joint (6) for lateral pivoting back and forth of the seat plate (2) and the backrest (3) is arranged, characterized in that the pivot joint (6), seen in an operating position in a view from below, preferably exclusively, centrally between lateral Ranges (34) of the seat plate (2) is arranged. Seating furniture (1) according to claim 1, characterized in that the seat plate (1) in addition, as the backrest (3) back and forth to the front and herschwenkbar, preferably on the underframe (4) is mounted. Seating furniture (1) according to claim 2, characterized in that the seat plate (2) with respect to their back and forth pivoting forwards and forwards with the backrest (3) with respect to their back and forth pivoting forwards and forwards for the synchronization of these pivotal movements forcibly coupled is. Seating furniture (1) according to one of claims 1 to 3, characterized in that the pivot joint (6) seen in the operating position in the view from below, at a rear, the backrest (3) facing half (10) of the seat plate (2) is arranged. Seating furniture (1) according to one of claims 1 to 3, characterized in that the seating furniture (1) has at least one additional pivot joint (7) for laterally pivoting the seat plate (2) and the backrest (3), which in the Operating position in the view seen from below, in a front, of the backrest (3) facing away from half (9) of the seat plate (2) is arranged. Seating furniture (1) according to one of claims 1 to 4, characterized in that the seating furniture (1) has only exactly one pivot joint (6) for lateral pivoting back and forth of the seat plate (2). Seating furniture (1) according to claim 6, characterized in that the pivot joint (6) in one, preferably the backrest (3) facing, half (10) of the seat plate (2) is arranged and the seat plate (2) in the other, preferably Facing away from the backrest (3), half (9) of the seat plate (2) is fixed to the underframe (4), wherein the seat plate (2) is designed to pivot sideways pivoting. Seating furniture (1) according to one of claims 1 to 7, characterized in that the pivot joint (6) or at least one of the pivot joints (6), as an axle joint or as a shaftless bending joint or as a ball joint is formed. Seating furniture (1) according to one of claims 1 to 8, characterized in that the seating (1), preferably the and / or each pivot joint (6, 7), at least one, preferably adjustable, stop (11) to limit a maximum possible has lateral pivot angle. Seating furniture (1) according to one of claims 1 to 9, characterized in that the seating furniture (1), preferably the and / or each pivot joint (6, 7), at least one, preferably adjustable and / or interchangeable, damping body (12) for damping the lateral pivotal movement of the seat plate (2). Seating furniture (1) according to one of claims 1 to 10, characterized in that the pivot joint (6), preferably also the additional pivot joint (7), below the seat plate (2) and spaced therefrom is arranged. Seating furniture (1) according to one of claims 1 to 11, characterized in that the backrest (3) by means of at least one support arm (18) with the pivot joint (6) is connected and the support arm (18) by means of at least one elongated hole (21) displaceable at, preferably, seen in the operating position, is mounted under the seat plate (2). Seating furniture (1) according to claim 12, characterized in that the slot (21) under a rear, the backrest (3) facing half (10) of the seat plate (2) is arranged. Seating furniture (1) according to one of claims 1 to 13, characterized in that the backrest (3) by means of at least one support arm (18) with a hinge (33), preferably in the form of the pivot joint (6), to the rear and to the front Swiveling back and forth of the backrest (3) is connected and the support arm (18) by means of a Trägerarmschwenkgelenks with the seat plate (2) is connected and in an unloaded operating position of the seat a horizontal distance X between the center of the joint (33) and the center of the Trägerarmschwenkgelenks with a horizontal distance Y between the center of the Trägerarmschwenkgelenks and a frontmost leaning point (29) of the backrest (3) in a ratio between 1 to 1 and 1 to 2.8, preferably between 1 to 1.7 and 1 to 1.9, stands. Seating furniture (1) according to claim 14, characterized in that the Trägerarmschwenkgelenk by at least one, in at least one slot (21) guided bolt (22) is formed.

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