EP1708595B1 - Drive for furniture for adjusting a first furniture part in relation to a second part - Google Patents

Abstract

The invention relates to a drive for furniture (18) for adjusting a first furniture part in relation to a second part. Said drive comprises at least one pivoting shaft (20), which is pivotally mounted on the first part and with which a pivoting drive is associated. According to the invention, said drive is equipped with at least one supporting element that co-operates with the pivoting shaft (20) and supports the latter (20) on a supporting surface that is configured on the second part, in such a way that the inclination of the first part can be adjusted in relation to the second part and/or the distance of the first part from the second part can be adjusted. The inventive drive for furniture has a simple construction, is cost-effective to produce, saves a significant amount of space and is particularly suitable for adjusting the seat part of a seat.

Description

The invention relates to a furniture drive for adjusting a first part of a piece of furniture relative to a second part of the piece of furniture.

Such furniture drives are well known and are used, for example, for adjusting parts of sitting and / or lying furniture, such as slats for beds or armchairs.

There are known furniture drives, which serve as a seat part, on which a seat is formed, formed upholstery element of a chair relative to a base body of the chair in its height and / or its inclination to adjust. The known furniture drive has a connected to the body scissor-type lifting linkage on which the seat part is supported. To adjust the lifting linkage, an electric motor drive is provided.

A disadvantage of this known furniture drive is that it is expensive and therefore expensive to manufacture. Another disadvantage is that the known furniture drive claimed a lot of space, in particular below the seat part.

Furniture drives are for example by US-A-4,258,445 . DE-A-199 03 112 A1 and FR-A-2730146 known.

By EP 1 378 189 A1 a furniture drive of the type in question for adjusting a first part of a furniture relative to a second part of the furniture is known, at least one pivotally mounted on the first part of the first pivot shaft, which is associated with a pivot drive, and a parallel and spaced from the first pivot shaft the first part pivotally mounted further pivot shaft, which is associated with a pivot drive has.

The invention has for its object to provide a furniture drive mentioned in the preamble of claim 1, which is simple and inexpensive can be produced and is designed to save space.

This object is achieved by the teaching defined in claim 1.

The basic idea of the teaching according to the invention is to provide a pivot shaft drive for adjusting the inclination of a first part, for example a seat part of an armchair, relative to a second part, for example a main body of the armchair, and / or the distance of the first part to the second part. For this purpose, at least one pivotally mounted on the first part pivot shaft is provided according to the invention, which is associated with a pivot drive. According to the invention at least one standing with the pivot shaft in operative connection support member is provided, via which the first pivot shaft is supported on a support surface formed on the second part such that by pivoting the pivot shaft, the inclination of the first part relative to the second part and / or the Distance of the first part is adjustable to the second part.

Serves the furniture drive according to the invention, for example, to adjust the inclination of a seat part relative to a main body of an armchair, so when pivoting the pivot shaft due to the fact that the pivot shaft is supported on the support surface or the support elements on the support surface, the vertical distance of the pivot shaft of the support surface, so that the seat part is adjusted in its inclination or in its distance from the support surface and thus in its height.

If, according to the invention, at least two pivot shafts are provided parallel to one another and at a distance from one another, to each of which a pivot drive is assigned, the seat part can be adjusted by means of the pivot shafts both in terms of its height and its inclination.

The furniture drive according to the invention is simple and inexpensive to produce and particularly space-saving. In particular, the furniture drive according to the invention, based on the pivot shaft and the associated pivot drive, a particularly low height.

The furniture drive according to the invention is suitable for adjusting parts of any furniture, for example, for adjusting parts of a slatted frame relative to each other. Particularly well, the furniture drive according to the invention for adjusting parts of seating, in particular of armchairs, relative to each other is suitable. According to the invention it is provided that parallel to and spaced from the pivot shaft, a further pivotally mounted on the first part pivot shaft is provided, which is associated with a pivot drive, wherein at least one standing with the further pivot shaft in operative connection further support member is provided, located on one of the second part formed support surface supported so that by pivoting the further pivot shaft, the inclination of the first part relative to the second part and / or the distance of the first part to the second part is adjustable. In this embodiment, a variety of adjustment results in a simple way.

Serves the furniture drive according to the invention, for example, for adjusting a seat part of an armchair and have in a starting position both pivot shafts the same vertical distance from the respective support surface, then pivoting the pivot shafts such that the vertical distance of the pivot shafts of the respective support surface in the same extent increased, to the fact that the seat part is adjusted in its distance from the support surface and thus in its height. Here, the inclination of the seat part remains unchanged. If one of the pivot shafts is pivoted and thus increases or decreases its vertical distance from the associated support surface, while the other pivot shaft is not pivoted and its vertical distance from the associated support surface thus remains the same, the seat part is adjusted in its inclination. In contrast, the pivot shafts are pivoted so that the vertical distance between the two pivot shafts of the respective support surface increases or decreases, the inclination of the seat part is adjusted.

According to the invention, it is basically sufficient if the respective pivot shaft is assigned only one support element. An advantageous development, however, provides that the pivot shaft or at least one of the pivot shafts are associated with at least two mutually spaced in the axial direction of the respective pivot shaft support elements. In this way, a deflection of the pivot shaft away from the support elements is reduced or prevented. In the aforementioned embodiment, in which in addition to the pivot shaft, a further pivot shaft is provided, it is particularly advantageous if each of the pivot shafts are assigned two support elements. In this embodiment, the first part is supported at four points on the second part. If required according to the respective requirements, more than two support elements can be provided per pivot shaft.

An advantageous development of the aforementioned embodiment provides that the support members associated with a pivot shaft are arranged at the axial ends of the pivot shaft. In this embodiment remains in the axial direction between the support members of the space in the radial direction of the pivot shaft free, so that the furniture drive is designed to save space.

Another advantageous development of the teaching according to the invention provides that at least one of the support elements facing away from the associated pivot shaft end has a pin, with which the respective support element is guided on or in a guide formed on the second part. In this embodiment, a particularly simple structure, wherein it is particularly advantageous that the Support surface can be arranged in the axial direction next to the respective pivot shaft. If, for example, the first part is a seat part and the second part is a base body of an armchair, the support surface associated with a support element can be formed, for example, in the axial direction next to the respective pivot shaft in an armrest of an armchair so that the space beneath the seat part remains free.

Advantageous developments of the aforementioned embodiments provide that the pin extends substantially parallel to the axial direction of the associated pivot shaft and / or that the guide is formed as a groove or a slot.

Another embodiment of the embodiment with the pin provides that the free end of the pin points away from the axial center of the associated pivot shaft. For example, for adjusting a seat part relative to a main body of a chair of a pivot shaft associated with two supporting elements, so in this embodiment, the pins of the support elements away from each other, the pins may be guided, for example, in guides formed in mutually facing surfaces of armrests of the body are. In this embodiment, a particularly space-saving construction results, since the space below the pivot shaft and thus the space below the seat part is free of parts of the adjustment mechanism. From the seat part then protrude only the support elements, and that at the axial ends of the pivot shaft. Since the support elements can thus be arranged, for example, in the region of the armrests, they are not or hardly perceived optically and are not perceived as disturbing.

Basically, the leadership can be done according to the each desired kinematics have any, for example, arcuate course. Conveniently, however, the guide runs substantially straight. This embodiment is particularly simple and therefore inexpensive to produce.

Another embodiment of the embodiment with the guide provides that the longitudinal axis of the guide to an imaginary line connecting the pivot shaft and the other pivot shaft is substantially parallel. In this embodiment, a particularly simple kinematics results.

The support member or the support members may be formed in any suitable manner. An advantageous development provides that the support element or at least one of the support elements is designed as a lever, in particular as a pivot lever.

According to the invention, the support member may be in operative connection with the associated pivot shaft in any suitable manner. For example, the support member may be connected via a gear transmission with the associated pivot shaft, so that a pivoting of the pivot shaft corresponding to the translation of the transmission leads to a pivoting of the support element. To make the structure particularly simple and therefore cost, provides an advantageous development that the support member or at least one of the support members is rotatably connected to the associated pivot shaft.

In order to further reduce the space requirement of the furniture drive according to the invention, provides an advantageous development that the support element or at least one of the support elements is formed flat in the axial direction of the associated pivot shaft.

Basically, as a rotary actuator manual Be provided pivoting drive. Advantageously, however, the pivot drive or at least one of the pivot drives is designed as an electric motor-driven pivot drive. In this embodiment, the adjustment of the first part relative to the second part is energy-saving and comfortable.

If more than one pivot shaft is provided according to the invention, a common pivot drive can be provided according to the invention for pivoting the pivot shafts. An advantageous development of the teaching of the invention provides, however, that the pivot shaft and the further pivot shaft is associated with a separate pivot drive, in such a way that the pivot shafts are independently pivotable. In this embodiment, the control of the pivot shafts associated with the pivot drives can be done independently. However, the control can also be done together, so that, for example, a predetermined kinematics is achieved during the adjustment of the first part relative to the second part.

A development of the embodiment with the electromotive pivot drive provides that the pivot drive or at least one of the pivot drives is designed as a linear drive with a movable along a linear axis of motion output member. Such linear drives are available as simple and inexpensive standard components and are suitable for applying large forces.

An advantageous development of the teaching according to the invention provides that the output member is a spindle nut of a spindle drive, which is arranged to be movable in the axial direction and secured against rotation on a rotationally driven threaded spindle. Such spindle drives are as simple and inexpensive Standard components available and are suitable for applying large forces.

In kinematic reversal of the aforementioned embodiment, the output member may also be formed by a movable in its axial direction and non-rotatably mounted threaded spindle on which a stationary rotationally driven spindle nut is arranged.

In the aforementioned embodiments, means for converting a linear movement of the output member are expediently provided in a pivoting movement of the respective pivot shaft.

In order to make the means for converting a linear movement of the output member in a pivoting movement of the respective pivot shaft particularly simple, inexpensive and robust, provides an advantageous development that the means for converting a linear movement of the output member in a pivotal movement of the respective pivot shaft have a crank-drive-like arrangement, over which the output member is in drive connection with the respective pivot shaft.

In the aforementioned embodiment, the crank-drive-like arrangement expediently has an associated with the respective pivot shaft pivotally connected to the pivot shaft, one end of a push rod-like connecting element, the other end is pivotally connected to the output member.

Another particularly advantageous development of the teaching of the invention provides that the furniture is a chair, in particular a chair, that the first part is formed by a padding element, in particular a seat part of the chair and that the second part by at least one in the axial direction of the pivot shaft laterally arranged by the cushioning element Armrest is formed.

An advantageous development of the aforementioned embodiment provides that the armrest or at least one of the armrests is formed flat and that the guide is formed in one of the other armrest facing surface of the respective armrest.

The invention will be explained in more detail with reference to the accompanying drawing, in which an embodiment of a furniture drive according to the invention is shown. All features described or illustrated in the drawing, alone or in any combination form the subject matter of the invention, regardless of their combination in the claims or their dependency and regardless of their formulation or representation in the description or in the drawing.

Fig. 1

eine schematische Perspektivansicht eines mit einem Ausführungsbeispiel eines erfindungsgemäßen Möbelantriebs ausgestatteten erfindungsgemäßen Möbels in Form eines Sessels,

Fig. 2

eine perspektivische Teildarstellung eines erfindungsgemäßen Möbelantriebs,

Fig. 3

den Sessel gemäß Fig. 1 in einer Seitenansicht in einer ersten Verstellposition, wobei eine der Armlehnen weggelassen ist,

Fig. 4

eine weitere perspektivische Teildarstellung des erfindungsgemäßen Möbelantriebs gemäß Fig. 2 in einer ersten Verstellposition,

Fig. 5

den Möbelantrieb gemäß Fig. 4 in einer zweiten Verstellposition,

Fig. 6

eine weitere perspektivische Teildarstellung des Möbelantriebs gemäß Fig. 2,

Fig. 7

in gleicher Darstellung wie Fig. 6 den Möbelantrieb gemäß Fig. 6 in einer zweiten Verstellposition und

Fig. 8

in gleicher Darstellung wie Fig. 3 den Sessel gemäß Fig. 3 in einer zweiten Verstellposition.

It shows:

Fig. 1

a schematic perspective view of an inventive furniture equipped with an embodiment of the invention furniture in the form of a chair,

Fig. 2

a partial perspective view of a furniture drive according to the invention,

Fig. 3

according to the chair Fig. 1 in a side view in a first adjustment position, wherein one of the armrests is omitted,

Fig. 4

a further partial perspective view of the furniture drive according to the invention Fig. 2 in a first adjustment position,

Fig. 5

according to the furniture drive Fig. 4 in a second adjustment position,

Fig. 6

a further partial perspective view of the furniture drive according to Fig. 2 .

Fig. 7

in the same representation as Fig. 6 according to the furniture drive Fig. 6 in a second adjustment position and

Fig. 8

in the same representation as Fig. 3 according to the chair Fig. 3 in a second adjustment position.

In Fig. 1 is a first embodiment of a piece of furniture according to the invention in the form of a chair, namely a chair 2 shown having a first part 4 in the form of a formed as a cushioning seat part, relative to a second part of the furniture forming body 6 in its height and in its Tilt is adjustable. To adjust the height or the inclination of the seat part 4 relative to the base body 6, an inventive furniture drive is provided in the Fig. 1 is not recognizable. The main body 6 has laterally spaced apart from the seat part 4, flat-shaped armrests 8, 10. Further, the armchair 2 has a calf connected to the seat part 4 calf part 12 and a hingedly connected to the seat part 4 upper body part 14 to which a head part 16 is pivotally connected. However, the calf part 12, the upper body part 10 and the head part 16 are of no interest here and will therefore not be explained in more detail here.

In Fig. 2 an embodiment of a furniture drive 18 according to the invention for adjusting the seat part 4 is shown relative to the base body 10, which according to the invention has a pivotally mounted on the seat part 4 pivot shaft 20. In detail, the Swivel shaft 20 to longitudinal beams 22, 24 of the seat part 4 pivotally mounted. The longitudinal beams 22, 24 form a supporting structure of the seat part 4 and are provided to the top of the seat part 4 with a padding (see. Fig. 1 ), in the Fig. 2 is omitted for purposes of illustration.

With the pivot shaft 20 is a support member in operative connection, which is connected in this embodiment by a pivot lever 26, one end of which is rotatably connected to the pivot shaft 20 and the end facing away in the region of the pivot shaft 20 has a pin 28 with which the pivot lever 26 is explained in more detail below manner in a guide formed in the armrest 10. The pin 28 extends in this embodiment substantially parallel to the axial direction of the associated pivot shaft 20, wherein the free end of the pin 28 facing away from the axial center of the pivot shaft 20.

Out Fig. 2 is not apparent and therefore it is explained here that with the pivot lever 26 facing away from the axial end of the pivot shaft 20, another support member is connected in the form of another pivot lever, which is arranged parallel to the pivot lever 26. The further pivot lever is formed as has been described for the pivot lever 26, wherein the pivot shaft 20 facing away from the end has a pin 28 corresponding pin, with which the further pivot lever is guided in a guide formed in the armrest 8.

How out Fig. 2 it can be seen, the pivot lever 26 is formed flat in the axial direction of the associated pivot shaft 20.

For pivoting the pivot shaft 20 and thus the pivot lever 26 and the other pivot lever is an electromotive pivot drive provided, which has a drive unit 29 with electric motor 30 as a drive motor whose in Fig. 2 unrecognizable output shaft is designed as a worm and is in engagement with a worm wheel 32. The rotary actuator has in this embodiment, a linear drive, which is designed as a spindle drive. A threaded spindle 34 of the spindle drive is rotatably connected to the worm wheel 32, wherein on the threaded spindle 34, a spindle nut 36 is arranged with an internal thread. The spindle nut 36 is arranged in the axial direction of the threaded spindle 34 along a linear axis of movement in the direction of a double arrow 38 back and forth on the threaded spindle 34 and guided against rotation.

In this embodiment, means for converting a linear movement of the output member along the linear axis of movement in a pivoting movement of the pivot shaft 20 are provided according to the invention, which in this embodiment, a crank-like arrangement 40, via which the spindle nut 36 is in driving connection with the associated pivot shaft 20. The crank-type arrangement 40 has in this embodiment a non-rotatably connected to the pivot shaft 20 linkage lever 42 to which the pivot shaft 20 eccentrically connected to one end of a push rod-like connecting element 40, whose other end is pivotally connected and eccentric to the pivot shaft 20 with the spindle nut 36 is.

In the embodiment shown in the drawing, the furniture drive 18, a further drive unit 29 ', which is constructed substantially as described above for the drive unit 29 has been. The components of the further drive unit 29 'are provided with reference numerals corresponding to the reference numerals of the components of the drive unit 29.

The further drive unit 29 'has a further pivot shaft 20', which is pivotally mounted on the longitudinal bars 22, 24 of the seat part 4. With the further pivot shaft 20, a further pivot lever 26 'is connected, the pivot shaft 20' opposite end has a pin 28 ', with which the further pivot shaft 20' on the further pivot lever 26 'is supported on a support surface. The further drive unit 29 'has a designed as a spindle drive linear drive with a spindle drive, the spindle nut 36' forms the output member of the linear drive and on a rotatably driven threaded spindle 34 'is arranged, with the rotatably a worm wheel 32' is connected, with a screw trained output shaft of an electric motor 30 'is engaged.

To supply power to the drive units 29, 29 'voltage supply means, not shown in the drawing are provided and for controlling the drive units 29, 29' control means, not shown in the drawing are provided. The control means are formed in this embodiment such that the drive units 29, 29 'are independently controllable.

Fig. 3 shows the chair according to Fig. 1 , wherein for reasons of illustration, the armrest 10 is omitted. Out Fig. 3 It can be seen that with the pivot shaft 20, a further support member is provided in the form of a further pivot lever 46, which faces away from the pivot lever 26 axial end of the pivot shaft 20 is connected. The further pivot lever 46 is formed as described with reference to FIG Fig. 2 has been described for the pivot lever 26. It has at its end remote from the pivot shaft 20 a pin 48 which is guided in a substantially straight and an imaginary line connecting the pivot shafts 20, 20 'parallel groove-like guide 50 in the armrest 8. The lower surface 51 of the guide 50 forms a support surface on which the pivot shaft 20 is supported via the pivot lever 46. The further pivot lever 46 is connected to the pivot lever 26 in parallel rotation with the pivot shaft 20.

With the further pivot shaft 20 ', another support member in the form of another pivot lever 46' is connected, which is constructed as described above with reference to Fig. 2 has been described for the pivot lever 46 '. The further pivot lever 46 'is rotatably connected to the pivot shaft 20' and has at its the pivot shaft 20 'end facing away from a pin 48', with which it is guided in a guide 8 formed in the armrest 50 ', in this embodiment in the essentially straight and parallel to an imaginary connecting line between the pivot shafts 20, 20 'extends.

The operation of the furniture drive according to the invention will be described below with reference to the FIGS. 4 to 7 described.

Fig. 4 shows the furniture drive 18 in an adjustment position in which the seat part 20, as in Fig. 3 shown in a raised position. To lower the seat part 4 from this raised position, the electric motor 30 drives the threaded spindle 34 such that the spinel nut 36 in Fig. 4 moved to the right. When moving in Fig. 4 to on the right pivots the spindle nut 36 rotatably connected to the pivot shaft 20 associated lever 42 of the crank-like arrangement 40 in Fig. 4 in a clockwise direction, so that the pivot shaft 20 in Fig. 4 also pivoted clockwise. Due to the rotationally fixed connection of the support elements forming pivoting lever 26, 46 here pivot the pivot lever 26, 46 also in Fig. 4 clockwise until the in Fig. 5 shown end position of the pivoting movement is reached. Since the pivot lever 26, 46 with its pin 28 and 48 on the support surface 51 of the respective associated guide (see. Fig. 3 supported for the pivot lever 46), is reduced during pivoting of the pivot lever 46, the vertical distance of the pivot shaft 20 to an extending in the longitudinal direction of the guide 50 imaginary line, so that the calf part 12 facing the end of the seat part 4 is lowered.

At the same time, the electric motor 30 'drives the drive unit 29' which is in Fig. 6 it can be seen, the threaded spindle 34 'in such a way that the spindle nut 36' in Fig. 6 moved to the left. Here, the spindle nut 36 'pivots the lever 42' of the crank-drive-like arrangement 40 'in Fig. 6 counterclockwise, so that the pivot shaft 20 'also in Fig. 6 is pivoted counterclockwise. Due to the rotationally fixed connection of the support elements forming pivot lever 26 ', 46' with the pivot shaft 20 in this case the pivot lever 26 ', 46' in Fig. 6 pivoted counterclockwise until the in Fig. 7 shown end position of this pivoting movement is reached. Since the pivot levers 26 ', 46' are supported by their respective pins 28 'and 48' on the support surface formed on the guide 50 ', the part facing away from the calf part 12 is turned away during this pivoting movement Lowered end of the seat part 4. If the activation of the drive unit 29 and the drive unit 29 'takes place synchronously, the seat part is made of the in Fig. 3 shown raised Verstellage in the Fig. 8 lowered Verstellage lowered.

A renewed lifting of the seat part 4 in the raised position takes place by an opposite control of the drive unit 29, 29 '. In a synchronous control of the drive units 29, 29 ', the inclination of the seat part 4' remains constant during the height adjustment.

If the inclination of the seat part 4 is to be adjusted relative to the main body 6, this can be done, for example, by driving only the drive unit 29 while the drive unit 29 'remains shut down, so that starting from the in Fig. 3 shown adjustment position of the pivot lever 46 in Fig. 3 pivoted clockwise and thus the wad part 12 facing the end of the seat part 4 is lowered. If, on the other hand, the end of the seat part 4 facing away from the calf part 12 is lowered, then the drive unit 29 'is controlled so that the pivot lever 46' is in Fig. 3 pivoted counterclockwise while the drive unit 29 is stopped.

The furniture drive 18 according to the invention is simple and inexpensive in construction and robust. A particular advantage is that to the underside of the seat part 4 only in the axial direction of the pivot shafts 20, 20 'very narrow pivot lever 26, 26' and 46, 46 'protrude. The pivot levers 26, 26 'and 46, 46' are in the immediate vicinity of the armrests 6, 8 and are both in the in Fig. 3 shown raised position of the seat part 4 and in the in FIG. 8th lowered position of the seat part 4 optically not or hardly noticeable. Since otherwise along the entire axial extent of the pivot shafts 20, 20 'no components of the adjustment mechanism project down over the seat part 4, the entire space below the seat part 4 is free. Furthermore, since the drive units 29, 29 'are integrated into the seat part 4 without any overhang, the furniture drive according to the invention is visually barely perceptible, despite the wide range of adjustment possibilities with regard to the height and inclination of the seat part 4. The armchair 2 according to the invention therefore has a particularly attractive external appearance, which hardly differs from the visual appearance of a non-adjustable armchair.

Claims (22)

1. A drive for furniture for adjusting a first furniture part in relation to a second furniture part,
   with at least one first hinged shaft (20) mounted pivotably on the first part, to which a rotary actuator is allocated, and
   with an additional hinged shaft (20') mounted pivotably on the first part in parallel and spaced apart from the first hinged shaft (20), which additional hinged shaft (20') is allocated a rotary actuator,
   characterised by
   at least one support element (26, 46), which is in active connection with the first hinged shaft (20), by means of which support element the first hinged shaft (20) is supported on a support surface formed on the second part, and
   at least one further support element (26', 46'), which is in active connection with the additional hinged shaft (20'), which further support element is supported on a support surface formed on the second part, such that by rotating the hinged shafts (20, 20') the inclination of the first part relative to the second part and/or the distance of the first part from the second part can be adjusted.
2. The drive for furniture according to claim 1, characterised in that the hinged shaft (20) or at least one of the hinged shafts (20, 20') is allocated at least two support elements (26, 46) spaced apart from one another in axial direction of the respective hinged shaft (20, 20').
3. The drive for furniture according to claim 2, characterised in that the support elements (26, 46; 26', 46') allocated to a hinged shaft are arranged on the axial ends of the hinged shaft (20; 20').
4. The drive for furniture according to claim 2 or 3, characterised in that at least one of the support elements (26, 46, 26', 46') in the region of its end facing away from the allocated hinged shaft (20, 20') comprises a pin (28, 48, 28', 48'), by means of which the respective support element is guided on or in a guide (50, 50') formed on the second part.
5. The drive for furniture according to claim 4, characterised in that the pin (28, 48, 28', 48') extends essentially parallel to the axial direction of the allocated hinged shaft (20, 20').
6. The drive for furniture according to claim 4 or 5, characterised in that the guide is designed in the form of a groove or slot.
7. The drive for furniture according to claim 4, 5, or 6, characterised in that the free end of the pin (28, 48; 28', 48') points away from the axial centre of the allocated hinged shaft (20, 20').
8. The drive for furniture according to one of claims 4 to 7, characterised in that the guide (50, 50') is essentially straight.
9. The drive for furniture according to one of claims 4 to 8, characterised in that the longitudinal axis of the guide (50, 50') runs essentially parallel to an imaginary connecting line between the hinged shaft (20) and the other hinged shaft (20').
10. The drive for furniture according to one of the preceding claims, characterised in that the support element or at least one of the support elements (26, 46, 26', 46') is designed as a lever, in particular a rotary lever.
11. The drive for furniture according to one of the preceding claims, characterised in that the support element or at least one of the support elements (26, 46, 26', 46') is connected in a rotation-fast manner to the allocated hinged shaft (20, 20').
12. The drive for furniture according to one of the preceding claims, characterised in that the support element or at least one of the support elements (26, 46, 26', 46') is designed to be flat in the axial direction of the allocated hinged shaft (20, 20').
13. The drive for furniture according to one of the preceding claims, characterised in that the rotary actuator or at least one of the rotary actuators is designed as an electric motor rotary actuator.
14. The drive for furniture according to one of the preceding claims, characterised in that the hinged shaft (20) and the additional hinged shaft (20') are each allocated a separate rotary actuator, so that the hinged shafts (20, 20') can be rotated independently from one another.
15. The drive for furniture according to claim 13 or 14, characterised in that the rotary actuator or at least one of the rotary actuators is designed as a linear drive with a driven member moving along a linear axis of movement.
16. The drive for furniture according to claim 15, characterised in that the driven member is a spindle nut (36) of a spindle drive (34, 36), which is arranged to be moveable in axial direction and in a rotation-fast manner on a rotary driveable threaded spindle (34).
17. The drive for furniture according to claim 15, characterised in that the driven member is formed by a threaded spindle that is moveable in axial direction and rotation-fast, on which a fixed rotary driveable spindle nut is arranged.
18. The drive for furniture according to one of claims 15 to 17, characterised by means for converting a linear movement of the driven member into a pivoting movement of the respective hinged shaft (20, 20').
19. The drive for furniture according to claim 18, characterised in that the means for converting a linear movement of the driven member into a pivoting movement of the respective hinged shaft (20, 20') comprises a crank mechanism-like arrangement (40, 40'), by means of which the driven member is in driving connection with the respective hinged shaft (20, 20').
20. The drive for furniture according to claim 19, characterised in that the crank drive-like arrangement comprises a hinge lever (42, 42') connected in a rotation-fast manner to the respective hinged shaft (20, 20'), with which one end of a push rod-like connecting element (44, 44') is connected eccentrically to the hinged shaft (20, 20'), the other end being connected in a hinge-like manner to the driven member.
21. The drive for furniture according to one of the preceding claims, characterised in that the furniture is a chair, in particular an armchair (2), in that the first part is formed by a cushioned element, in particular a seat part of the chair, and in that second part is formed by at least one arm rest (8, 10) arranged in axial direction of the hinged shaft (20) to the side of the cushioned element.
22. The drive for furniture according to claim 21, characterised in that the arm rest or at least one of the arm rests (8, 10) is designed to be flat, and in that the guide is formed in a surface of the respective arm rest (8, 10) facing the other arm rest (10, 8).

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