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EP1708595A2 - Drive for furniture for adjusting a first furniture part in relation to a second part - Google Patents

Drive for furniture for adjusting a first furniture part in relation to a second part

Info

Publication number
EP1708595A2
EP1708595A2 EP05700905A EP05700905A EP1708595A2 EP 1708595 A2 EP1708595 A2 EP 1708595A2 EP 05700905 A EP05700905 A EP 05700905A EP 05700905 A EP05700905 A EP 05700905A EP 1708595 A2 EP1708595 A2 EP 1708595A2
Authority
EP
European Patent Office
Prior art keywords
pivot shaft
furniture
drive according
swivel
furniture drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05700905A
Other languages
German (de)
French (fr)
Other versions
EP1708595B1 (en
Inventor
Eckhart Dewert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deon AG
Original Assignee
Deon AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39650927&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1708595(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE10301326A external-priority patent/DE10301326A1/en
Application filed by Deon AG filed Critical Deon AG
Publication of EP1708595A2 publication Critical patent/EP1708595A2/en
Application granted granted Critical
Publication of EP1708595B1 publication Critical patent/EP1708595B1/en
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A47C1/0242—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by electric motors
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C17/00—Sofas; Couches; Beds
    • A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
    • A47C17/12—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds changeable to beds by tilting or extending the arm-rests
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
    • A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type

Definitions

  • Furniture drive for adjusting a first part of a piece of furniture relative to a second part
  • 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.
  • Furniture drives of this type are generally known and are used, for example, for adjusting parts of
  • Furniture drives which serve to adjust the height and / or inclination of an upholstery element of a chair designed as a seat part on which a seat surface is formed, relative to a base body of the chair.
  • the known furniture drive has a scissor-type lifting linkage connected to the base body, on which the seat part is supported.
  • An electric motor drive is provided for adjusting the lifting rod.
  • a disadvantage of this known furniture drive is that it is complex and therefore expensive to manufacture. Another disadvantage is that the known furniture drive takes up a lot of space, especially below the seat part.
  • the invention has for its object to provide a furniture drive of the type mentioned in the preamble of claim 1, which does not have the disadvantages of the known furniture drive, which is therefore simple and economical. is inexpensive to manufacture and is space-saving.
  • This object is achieved by the teaching specified in claim 1.
  • the basic idea of the teaching according to the invention is to provide a swivel 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 base body of the armchair, and / or the distance between the first part and the second part.
  • at least one pivot shaft is pivotally mounted on the first part and is assigned a pivot drive.
  • At least one support element is connected to the pivot shaft, via which the first pivot shaft is supported on a support surface formed on the second part in such a way 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 to the second part is adjustable.
  • the pivot shaft is supported by the support element or the support elements on the support surface, the vertical distance of the pivot shaft from 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.
  • a single pivot shaft is provided, which is mounted on one end of the seat part, while the other end around one stationary pivot axis is pivotable, the inclination of the seat part relative to the support surface and thus to the base body of the armchair is adjustable by means of the furniture drive according to the invention.
  • the end of the seat part facing away from the pivot shaft is not movably mounted on a fixed pivot axis, but rather, for example, via a link guide, not only the inclination of the seat part relative to the base body can be adjusted by means of a single pivot shaft when using a suitable pivot mechanism, but also its height. If, in particular and for example parallel and spaced apart, at least two swivel shafts are provided, each of which is assigned a swivel drive, then the height of the seat part and its inclination can be adjusted by means of the swivel shafts.
  • the furniture drive according to the invention is simple and inexpensive to manufacture and particularly space-saving.
  • the furniture drive according to the invention based on the pivot shaft and the associated pivot drive, has a particularly low overall 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 one another.
  • the furniture drive according to the invention is particularly well suited for adjusting parts of seating furniture, in particular armchairs, relative to one another. In principle, it is sufficient according to the invention if a single pivot shaft is provided for adjusting the inclination of the first part relative to the second part and / or the distance of the first part from the second part.
  • a further development of the teaching according to the invention provides, however, that a further pivot shaft mounted pivotably on the first part is provided in parallel and spaced apart from the pivot shaft, to which a pivot drive is assigned, at least one further support element that is operatively connected to the further pivot shaft being provided is supported on a support surface formed on the second part such that the inclination of the first part relative to the second part and / or the distance of the first part from the second part is adjustable by pivoting the further pivot shaft.
  • the furniture drive according to the invention is used, for example, to adjust a seat part of an armchair and both pivot shafts have the same vertical distance from the respective support surface in a starting position, pivoting of the pivot shafts results in such a way that the vertical distance of the pivot shafts from the respective support surface is the same increased, that the seat part is adjusted in its distance from the support surface and thus in its height.
  • the inclination of the seat part remains unchanged. If one of the swivel shafts is swiveled and thus its vertical distance to the associated support surface is increased or decreased, while the other swivel shaft is not swiveled and its vertical distance to the assigned support surface thus remains the same, the inclination of the seat part is adjusted.
  • the swivel shafts are swiveled such that the vertical distance between the two swivel shafts from the respective support surface increases or decreases, the inclination of the seat part is adjusted.
  • An advantageous development provides, however, that at least two support elements spaced apart from one another in the axial direction of the respective pivot shaft are assigned to the pivot shaft or at least one of the pivot shafts. In this way, deflection of the pivot shaft away from the support elements is reduced or prevented.
  • each of the swivel shafts is assigned two support elements.
  • the first part is supported at four points on the second part. If required in accordance with the respective requirements, more than two support elements can also be provided per swivel shaft.
  • An advantageous development of the aforementioned embodiment provides that the support elements assigned to a pivot shaft are arranged at the axial ends of the pivot shaft. In this embodiment, the space in the axial direction between the support elements remains free in the radial direction of the pivot shaft, so that the furniture drive is designed to be particularly space-saving.
  • At least one of the support elements in the region of its end facing away from the associated pivot shaft has a pin with which the respective support element is guided on or in a guide formed on the second part.
  • This embodiment results in a particularly simple structure, it being 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 assigned to 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 below the seat part is free remains.
  • the pin extends essentially parallel to the axial direction of the associated pivot shaft and / or that the guide is designed as a groove or as a slot.
  • Another development 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.
  • two support elements are assigned, so in this embodiment the pins of the support elements point away from one another, the pins being able to be guided, for example, in guides which are formed in mutually facing surfaces by armrests of the base body are.
  • This embodiment results in a particularly space-saving design, since the space below the pivot shaft and thus the space below the seat part are free of parts of the adjustment mechanism. Then only the support elements protrude from the seat part, specifically at the axial ends of the pivot shaft. Since the support elements can thus be arranged in the area of the armrests, for example, they are not perceived visually or are hardly noticed and are not perceived as disturbing. Basically, the leadership can be according to the desired kinematics have any, for example, arcuate course. However, the guidance expediently runs essentially straight. This embodiment is particularly simple and therefore inexpensive to manufacture. Another development of the embodiment with the guide provides that the longitudinal axis of the guide runs essentially parallel to an imaginary connecting line between the pivot shaft and the further pivot shaft.
  • the support element or the support elements can be designed 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.
  • the support element can be operatively connected to the associated pivot shaft in any suitable manner.
  • the support element can be connected to the associated pivot shaft via a gear transmission, so that pivoting the pivot shaft corresponding to the transmission ratio leads to pivoting of the support element.
  • an advantageous further development provides that the support element or at least one of the support elements is connected in a rotationally fixed manner to the associated pivot shaft. In order to further reduce the space requirement of the furniture drive according to the invention, sees an advantageous one
  • the support element or at least one of the support elements is flat in the axial direction of the associated pivot shaft.
  • a manual ler swivel drive can be provided.
  • the swivel drive or at least one of the swivel drives is advantageously designed as an electromotive swivel drive.
  • the adjustment of the first part relative to the second part is designed to be energy-saving and comfortable. If more than one swivel shaft is provided according to the invention, then according to the invention a common swivel drive can be provided for swiveling the swivel shafts.
  • the pivot shaft and the further pivot shaft are each assigned a separate pivot drive, in such a way that the pivot shafts can be pivoted independently of one another.
  • the swivel drives assigned to the swivel shafts can be controlled independently of one another.
  • the control can also take place jointly, so that, for example, a predetermined kinematics is achieved when the first part is adjusted relative to the second part.
  • the electromotive swivel drive provides that the swivel drive or at least one of the swivel drives is designed as a linear drive with an output element movable along a linear axis of movement.
  • Such linear drives are available as simple and inexpensive standard components and are suitable for applying large forces.
  • the output element has a
  • the output member can also be formed by a threaded spindle which is mounted so as to be movable and non-rotatable in its axial direction and on which a stationary spindle nut which can be driven in rotation is arranged.
  • means are advantageously provided for converting a linear movement of the output member into a pivoting movement of the respective pivot shaft.
  • the means for converting a linear movement of the output member into a pivoting movement of the respective pivot shaft have a crank-like arrangement have, via which the output member is in drive connection with the respective pivot shaft.
  • the crank drive-like arrangement expediently has a pivot lever which is connected to the respective pivot shaft in a manner fixed against relative rotation, with which one end of a connecting rod-like connecting element is connected eccentrically to the pivot shaft, the other end of which is connected in an articulated manner to the output element.
  • the furniture is a piece of seating furniture, in particular an armchair, that the first part is formed by an upholstery element, in particular a seating part of the seating furniture, and that the second part is formed laterally by at least one in the axial direction of the pivot shaft from the upholstery element orderly armrest is formed.
  • An advantageous development of the aforementioned embodiment provides that the armrest or at least one of the armrests is flat and that the guide is formed in a surface of the respective armrest facing the other armrest.
  • FIG. 1 shows a schematic perspective view of a piece of furniture according to the invention equipped with an embodiment of a furniture drive according to the invention in the form of an armchair
  • FIG. 2 shows a partial perspective view of a furniture drive according to the invention
  • FIG. 3 shows the armchair according to FIG first adjustment position, one of the armrests being omitted
  • FIG. 4 a further partial perspective view of the furniture drive according to the invention according to FIG. 2 in a first adjustment position
  • FIG. 5 the furniture actuator according to FIG. 4 in one 6
  • FIG. 7 in the same view as FIG. 6 the furniture drive according to FIG. 6 in a second adjustment position
  • FIG. 8 the same view as FIG. 3 the armchair 3 in a second adjustment position.
  • a first embodiment of a piece of furniture according to the invention in the form of a piece of seating furniture, namely an armchair 2 is shown, which has a first part 4 in the form of a seat part designed as an upholstery element, which relative to a base body 6 forming a second part of the piece of furniture in its Height and its inclination is adjustable.
  • a furniture drive according to the invention is provided, which cannot be seen in FIG. 1.
  • the base body 6 has armrests 8, 10 which are flat and are laterally spaced apart from one another from the seat part 4.
  • the armchair 2 has a calf part 12 which is articulated to the seat part 4 and an upper body part 14 which is articulated to the seat part 4 and to which a head part 16 is articulated.
  • the calf part 12, the upper body part 10 and the head part 16 are of no interest here and are therefore not explained in more detail here.
  • 2 shows an exemplary embodiment of a furniture drive 18 according to the invention for adjusting the seat part 4 relative to the base body 10, which according to the invention has a pivot shaft 20 which is pivotably mounted on the seat part 4. In detail it is Swivel shaft 20 on longitudinal bars 22, 24 of the seat part 4 pivotally mounted.
  • the longitudinal bars 22, 24 form a load-bearing structure of the seat part 4 and are provided with upholstery on the upper side of the seat part 4 (cf. FIG. 1), which is omitted in FIG. 2 for reasons of illustration.
  • a support element is operatively connected to the pivot shaft 20, which in this exemplary embodiment is connected by a pivot lever 26, one end of which is connected in a rotationally fixed manner to the pivot shaft 20 and which in the region of its end remote from the pivot shaft 20 has a pin 28 with which the pivot lever 26 is guided in a guide formed in the armrest 10 in a manner explained in more detail below.
  • the pin 28 extends essentially parallel to the axial direction of the associated pivot shaft 20, the free end of the pin 28 pointing away from the axial center of the pivot shaft 20.
  • Fig. 2 is not apparent and therefore it is explained here that the axial end of the pivot shaft 20 facing away from the pivot lever 26 is connected to a further support element in the form of a further pivot lever which is arranged parallel to the pivot lever 26.
  • the further pivot lever is designed as described for the pivot lever 26, its end facing away from the pivot shaft 20 having a pin corresponding to the pin 28, with which the further pivot lever is guided in a guide formed in the armrest 8.
  • the pivot lever 26 is flat in the axial direction of the associated pivot shaft 20.
  • an electromotive swivel drive which has a drive unit 29 with an electric motor 30 as the drive motor, the output shaft of which cannot be seen in FIG. 2 is designed as a worm and is in engagement with a worm wheel 32.
  • the swivel drive has a linear drive which is designed as a spindle drive.
  • a threaded spindle 34 of the spindle drive is connected in a rotationally fixed manner to the worm wheel 32, a spindle nut 36 with an internal thread being arranged on the threaded spindle 34.
  • the spindle nut 36 is arranged in the axial direction of the threaded spindle 34 along a linear movement axis in the direction of a double arrow 38 and can be moved back and forth on the threaded spindle 34 and is secured against rotation.
  • means for converting a linear movement of the output member along the linear movement axis into a pivoting movement of the pivot shaft 20 are provided, which in this exemplary embodiment have a crank drive-like arrangement 40 via which the spindle nut 36 is in drive connection with the associated pivot shaft 20.
  • the crank drive-like arrangement 40 has a pivot lever 42 which is connected in a rotationally fixed manner to the swivel shaft 20 and to which one end of a connecting rod-like connecting element 40 is connected eccentrically to the swivel shaft 20, the other end of which is articulated and eccentrically connected to the swivel shaft 20 with the spindle nut 36 is.
  • the furniture drive 18 has a further drive unit 29 ', which is constructed essentially as described above for the drive unit 29. has been written.
  • the components of the further drive unit 29 ′ are provided with reference symbols which correspond to the reference symbols of the components of the drive unit 29.
  • the further drive unit 29 ' has a further pivot shaft 20' which is pivotably mounted on the longitudinal bars 22, 24 of the seat part 4.
  • a further pivot lever 26 ' is connected to the further pivot shaft 20, the end of which facing away from the pivot shaft 20' has a pin 28 'with which the further pivot
  • the further drive unit 29 ' has a linear drive designed as a spindle drive with a spindle drive, the spindle nut 36' of which forms the output element of the linear drive and is arranged on a threaded spindle 34 'which can be driven in rotation and with which a worm wheel 32' is connected in a rotationally fixed manner and which is connected to a designed as a worm output shaft of an electric motor 30 'is engaged.
  • Voltage supply means are provided for supplying power to the drive units 29, 29 'and control means, not shown in the drawing, are provided for controlling the drive units 29, 29'.
  • FIG. 3 shows the armchair according to FIG. 1, the armrest 10 being omitted for reasons of illustration. From Fig. 3 it can be seen that a further support element in the form of a further pivot lever 46 is provided with the pivot shaft 20, which with the axial end facing away from the pivot lever 26 of the pivot shaft 20 is connected.
  • the further pivot lever 46 is designed as described for the pivot lever 26 with reference to FIG. 2.
  • At its end facing away from the pivot shaft 20, it has a pin 48 which is guided in a substantially straight groove-like guide 50 in the armrest 8 which is parallel to an imaginary connecting line between the pivot shafts 20, 20 '.
  • 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 in a rotationally fixed manner to the pivot shaft 20 parallel to the pivot lever 26.
  • a further support element in the form of a further pivot lever 46 ' is connected to the further pivot shaft 20' and is constructed as described above for the pivot lever 46 'with reference to FIG. 2.
  • the further pivot lever 46 ' is rotatably connected to the pivot shaft 20' and has at its end remote from the pivot shaft 20 'a pin 48' with which it is guided in a guide 50 'formed in the armrest 8, which in this embodiment in runs essentially straight and parallel to an imaginary connecting line between the pivot shafts 20, 20 '.
  • FIG. 4 shows the furniture drive 18 in an adjustment position in which the seat part 20, as shown in FIG. 3, is in a raised position.
  • the electric motor 30 drives the threaded spindle 34 in such a way that the spinel nut 36 moves to the right in FIG. 4.
  • the spindle nut 36 pivots the articulated lever 42 of the crankshaft-like arrangement 40 in FIG. 4, which is connected in a rotationally fixed manner to the pivot shaft 20, so that the pivot shaft 20 m in FIG. 4 is also pivoted clockwise.
  • the pivoting levers 26, 46 Due to the rotationally fixed connection of the pivoting levers 26, 46 forming the supporting elements, the pivoting levers 26, 46 also pivot clockwise in FIG. 4 until the end position of the pivoting movement shown in FIG. 5 is reached. Since the pivot levers 26, 46 are supported with their journals 28 and 48 on the support surface 51 of the respectively assigned guide (cf. FIG. 3 for the pivot lever 46), the vertical distance of the pivot shaft 20 is reduced when the pivot lever 46 is pivoted in the longitudinal direction of the guide 50 imaginary line, so that the calf portion 12 facing the end of the seat portion 4 is lowered. At the same time, the electric motor 30 'of the drive unit 29', which can be seen in FIG.
  • a renewed lifting of the seat part 4 into the raised position takes place by an opposite actuation of the drive unit 29, 29 '.
  • the drive units 29, 29 ' are actuated synchronously, 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 base body 6, this can be done, for example, by driving only the drive unit 29 while the drive unit 29 'remains stopped, so that starting from the one shown in FIG 3 pivoted clockwise in FIG. 3 and thus the end of the seat part 4 facing the calf part 12 is lowered.
  • the drive unit 29 ' is actuated in such a way that the pivot lever 46' in FIG. 3 pivots 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 only the very narrow pivot levers 26, 26 'and 46, 46' protrude from the underside of the seat part 4 in the axial direction of the pivot shafts 20, 20 '.
  • the pivot levers 26, 26 'and 46, 46' are in the immediate vicinity of the armrests 6, 8 and are both in the raised position of the seat part 4 shown in FIG. 3 and in the position shown in FIG.
  • the armchair 2 according to the invention therefore has a particularly appealing external appearance which hardly differs from the visual appearance of a non-adjustable armchair.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Nursing (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Hinges (AREA)

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

Möbelantrieb zum Verstellen eines ersten Teiles eines Möbels relativ zu einem zweiten Teil Furniture drive for adjusting a first part of a piece of furniture relative to a second part
Die Erfindung betrifft einen Möbelantrieb zum Verstellen eines ersten Teiles eines Möbels relativ zu einem zweiten Teil des Möbels. Derartige Möbelantriebe sind allgemein bekannt und dienen beispielsweise zum Verstellen von Teilen vonThe 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. Furniture drives of this type are generally known and are used, for example, for adjusting parts of
Sitz- und/oder Liegemöbeln, beispielsweise von Lattenrosten für Betten oder von Sesseln. Es sind Möbelantriebe bekannt, die dazu dienen, ein als Sitzteil, an dem eine Sitzfläche gebildet ist, ausgebildetes Polsterungselement eines Sessels relativ zu einem Grundkörper des Sessels in seiner Höhe und/oder seiner Neigung zu verstellen. Der bekannte Möbelantrieb weist ein mit dem Grundkörper verbundenes scherenartiges Hubgestänge auf, auf dem sich das Sitz- teil abstützt. Zur Verstellung des Hubgestänges ist ein elektromotorischer- Antrieb vorgesehen. Ein Nachteil dieses bekannten Möbelantriebs besteht darin, daß er aufwendig und damit teuer in der Herstellung ist. Ein weiterer Nachteil besteht darin, daß der bekannte Möbelantrieb insbesondere unterhalb des Sitzteiles viel Raum beansprucht. Der Erfindung liegt die Aufgabe zugrunde, einen Möbelantrieb der im Oberbegriff des Anspruchs 1 genannten Art anzugeben, der die Nachteile des bekannten Mö- belantriebs nicht aufweist, der also einfach und ko- stengünstig herstellbar ist und platzsparend ausgebildet ist. Diese Aufgabe wird durch die im Anspruch 1 angegebene Lehre gelöst. Der Grundgedanke der erfindungsgemäßen Lehre besteht darin, zur Verstellung der Neigung eines ersten Teiles, beispielsweise eines Sitzteiles eines Sessels, relativ zu einem zweiten Teil, beispielsweise einem Grundkörper des Sessels, und/oder des Abstandes des ersten Teiles zu dem zweiten Teil einen Schwenkwellenantrieb vorzusehen. Hierzu ist erfindungsgemäß wenigstens eine an dem ersten Teil schwenkbar gelagerte Schwenkwelle vorgesehen, der ein Schwenkantrieb zugeordnet ist. Erfindungsgemäß ist ferner wenigstens ein mit der Schwenkwelle in irkungsVerbindung stehendes Stützelement vorgesehen, über das sich die erste Schwenkwelle an einer an dem zweiten Teil gebildeten Stützfläche derart abstützt, daß durch Verschwenken der Schwenkwelle die Neigung des ersten Teiles relativ zu dem zweiten Teil und/oder der Abstand des ersten Teiles zu dem zweiten Teil verstellbar ist. Dient der erfindungsgemäße Möbelantrieb beispielsweise zum Verstellen der Neigung eines Sitzteiles relativ zu einem Grundkörper eines Sessels, so verändert sich beim Verschwenken der Schwenkwelle aufgrund derSeating and / or reclining furniture, for example slatted frames for beds or armchairs. Furniture drives are known which serve to adjust the height and / or inclination of an upholstery element of a chair designed as a seat part on which a seat surface is formed, relative to a base body of the chair. The known furniture drive has a scissor-type lifting linkage connected to the base body, on which the seat part is supported. An electric motor drive is provided for adjusting the lifting rod. A disadvantage of this known furniture drive is that it is complex and therefore expensive to manufacture. Another disadvantage is that the known furniture drive takes up a lot of space, especially below the seat part. The invention has for its object to provide a furniture drive of the type mentioned in the preamble of claim 1, which does not have the disadvantages of the known furniture drive, which is therefore simple and economical. is inexpensive to manufacture and is space-saving. This object is achieved by the teaching specified in claim 1. The basic idea of the teaching according to the invention is to provide a swivel 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 base body of the armchair, and / or the distance between the first part and the second part. For this purpose, according to the invention at least one pivot shaft is pivotally mounted on the first part and is assigned a pivot drive. According to the invention, at least one support element is connected to the pivot shaft, via which the first pivot shaft is supported on a support surface formed on the second part in such a way 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 to the second part is adjustable. If the furniture drive according to the invention is used, for example, to adjust the inclination of a seat part relative to a base body of an armchair, then when the pivoting shaft is pivoted, it changes due to the
Tatsache, daß sich die Schwenkwelle über das Stützelement oder die Stützelemente an der Stützfläche abstützt, der vertikale Abstand der Schwenkwelle von der Stützfläche, so daß das Sitzteil in seiner Neigung bzw. in seinem Abstand zu der Stützfläche und damit in seiner Höhe verstellt wird. Ist erfindungsgemäß beispielsweise eine einzige Schwenkwelle vorgesehen, die an einem Ende des Sitzteiles gelagert ist, während das andere Ende um eine ortsfeste Schwenkachse verschwenkbar ist, so ist mittels des erfindungsgemäßen Möbelantriebs die Neigung des Sitzteiles relativ zu der Stützfläche und damit zu dem Grundkörper des Sessels verstellbar. Ist demgegen- über das der Schwenkwelle abgewandte Ende des Sitzteils nicht an einer ortsfesten Schwenkachse, sondern beispielsweise über eine Kulissenführung beweglich gelagert, so ist mittels einer einzigen Schwenkwelle bei Verwendung einer geeigneten Schwenkmechanik nicht nur die Neigung des Sitzteiles relativ zu dem Grundkörper verstellbar, sondern auch seine Höhe. Sind insbesondere und beispielsweise parallel und zueinander beabstandet wenigstens zwei Schwenkwellen vorgesehen, denen jeweils ein Schwenkantrieb zugeordnet ist, so ist das Sitzteil mittels der Schwenkwellen sowohl in seiner Höhe als auch in seiner Neigung verstellbar . Der erfindungsgemäße Möbelantrieb ist einfach und kostengünstig herstellbar und besonders platzsparend. Insbesondere weist der erfindungsgemäße Möbelantrieb, bezogen auf die Schwenkwelle und den zugeordneten Schwenkantrieb, eine besonders geringe Bauhöhe auf. Der erfindungsgemäße Möbelantrieb ist zum Verstellen von Teilen beliebiger Möbel geeignet, beispiels- weise zum Verstellen von Teilen eines Lattenrostes relativ zueinander. Besonders gut ist der erfindungsgemäße Möbelantrieb zum Verstellen von Teilen von Sitzmöbeln, insbesondere von Sesseln, relativ zueinander geeignet . Grundsätzlich ist es erfindungsgemäß ausreichend, wenn zur Verstellung der Neigung des ersten Teiles relativ zu dem zweiten Teil und/oder des Abstandes des ersten Teiles zu dem zweiten Teil eine einzige Schwenkwelle vorgesehen ist. Eine außerordentlich vorteilhafte Weiterbildung der erfindungsgemäßen Lehre sieht jedoch vor, daß parallel und beabstandet zu der Schwenkwelle eine weitere an dem ersten Teil schwenkbar gelagerte Schwenkwelle vorgesehen ist, der ein Schwenkantrieb zugeordnet ist, wobei wenigstens ein mit der weiteren Schwenkwelle in Wirkungsverbindung stehendes weiteres Stützelement vorgesehen ist, das sich an einer an dem zweiten Teil gebildeten Stützfläche derart abstützt, daß durch Verschwenken der weiteren Schwenkwelle die Neigung des ersten Teiles relativ zu dem zweiten Teil und/oder der Abstand des ersten Teiles zu dem zweiten Teil verstellbar ist. Bei dieser Ausführungsform ergeben sich auf einfache Weise vielfältige Verstellmöglichkeiten. Dient der erfindungsgemäße Möbelantrieb beispielsweise zum Verstellen eines Sitzteiles eines Sessels und haben in einer Ausgangsposition beide Schwenkwellen den gleichen vertikalen Abstand von der jeweiligen Stützfläche, so führt ein Verschwenken der Schwenkwellen derart, daß sich der vertikale Abstand der Schwenkwellen von der jeweiligen Stützfläche in dem gleichen Maße erhöht, dazu, daß das Sitzteil in seinem Abstand zu der Stützfläche und damit in seiner Höhe verstellt wird. Hierbei bleibt die Neigung des Sitzteiles unverändert. Wird eine der Schwenkwellen verschwenkt und damit ihr vertikaler Abstand zu der zugeordneten Stützfläche vergrößert oder verkleinert, während die andere Schwenkwelle nicht verschwenkt wird und ihr vertikaler Abstand zu der zugeordneten Stützfläche somit gleich bleibt, so wird das Sitzteil in seiner Neigung verstellt. Werden demgegenüber die Schwenkwellen so verschwenkt, daß sich der vertikale Abstand beider Schwenkwellen von der jeweiligen Stützfläche vergrößert oder verringert, so wird die Neigung des Sitzteiles verstellt. Erfindungsgemäß ist es grundsätzlich ausreichend, wenn der Schwenkwelle oder der jeweiligen Schwenkwelle lediglich ein Stützelement zugeordnet ist. Eine vorteilhafte Weiterbildung sieht jedoch vor, daß der Schwenkwelle oder wenigstens einer der Schwenkwellen wenigstens zwei in Axialrichtung der jeweiligen Schwenkwelle zueinander beabstandete Stützelemente zugeordnet sind. Auf diese Weise ist eine Durchbiegung der Schwenkwelle entfernt von den Stützelementen ver- ringert oder verhindert. Bei der vorgenannten Ausführungsform, bei der zusätzlich zu der Schwenkwelle eine weitere Schwenkwelle vorgesehen ist, ist es besonders vorteilhaft, wenn jeder der Schwenkwellen zwei Stützelemente zugeordnet sind. Bei dieser Ausführungsform stützt sich das erste Teil an vier Punkten an dem zweiten Teil ab. Falls entsprechend den jeweiligen Anforderungen erforderlich, können pro Schwenkwelle auch mehr als zwei Stützelemente vorgesehen sein. Eine vorteilhafte Weiterbildung der vorgenannten Ausführungsform sieht vor, daß die einer Schwenkwelle zugeordneten Stützelemente an den axialen Enden der Schwenkwelle angeordnet sind. Bei dieser Ausführungsform bleibt in Axialrichtung zwischen den Stützelementen der Raum in Radialrichtung der Schwenkwelle frei, so daß der Möbelantrieb besonders platzsparend gestaltet ist. Eine andere vorteilhafte Weiterbildung der erfindungsgemäßen Lehre sieht vor, daß wenigstens eines der Stützelemente im Bereich seines der zugeordneten Schwenkwelle abgewandten Endes einen Zapfen aufweist, mit dem das jeweilige Stützelement an oder in einer an dem zweiten Teil gebildeten Führung geführt ist. Bei dieser Ausführungsform ergibt sich ein besonders einfacher Aufbau, wobei besonders vorteilhaft ist, daß die Stützfläche in Axialrichtung neben der jeweiligen Schwenkwelle angeordnet sein kann. Ist beispielsweise das erste Teil ein Sitzteil und das zweite Teil ein Grundkörper eines Sessels, so kann die einem Stützele- ment zugeordnete Stützfläche beispielsweise in Axial - richtung neben der jeweiligen Schwenkwelle in einer Armlehne eines Sessels gebildet sein, so daß der Raum unterhalb des Sitzteiles frei bleibt. Vorteilhafte Weiterbildungen der vorgenannten Aus- führungsformen sehen vor, daß sich der Zapfen im wesentlichen parallel zur Axialrichtung der zugeordneten Schwenkwelle erstreckt und/oder daß die Führung als Nut oder als Schlitz ausgebildet ist. Eine andere Weiterbildung der Ausführungsform mit dem Zapfen sieht vor, daß das freie Ende des Zapfens von der axialen Mitte der zugeordneten Schwenkwelle wegweist. Sind beispielsweise zur Verstellung eines Sitzteiles relativ zu einem Grundkörper eines Sessels einer Schwenkwelle zwei Stützelemente zugeordnet, so weisen bei dieser Ausführungsform die Zapfen der Stützelemente voneinander weg, wobei die Zapfen beispielsweise in Führungen geführt sein können, die in einander zugewandten Flächen von Armlehnen des Grundkörpers gebildet sind. Bei dieser Ausführungsform ergibt sich ein besonders platzsparender Aufbau, da der Raum unterhalb der Schwenkwelle und damit der Raum unterhalb des Sitzteiles frei von Teilen der Verstellmechanik ist. Aus dem Sitzteil ragen dann lediglich die Stützelemente heraus, und zwar an den axialen Enden der Schwenkwelle. Da die Stützelemente somit beispielsweise im Bereich der Armlehnen angeordnet sein können, werden sie optisch nicht oder kaum wahrgenommen und nicht als störend empfunden. Grundsätzlich kann die Führung entsprechend der jeweils gewünschten Kinematik einen beliebigen, beispielsweise bogenförmigen Verlauf haben. Zweckmäßigerweise verläuft die Führung jedoch im wesentlichen gerade. Diese Ausführungsform ist besonders einfach und damit kostengünstig herstellbar. Eine andere Weiterbildung der Ausführungsform mit der Führung sieht vor, daß die Längsachse der Führung zu einer gedachten Verbindungslinie zwischen der Schwenkwelle und der weiteren Schwenkwelle im wesentli- chen parallel verläuft. Bei dieser Ausführungsform ergibt sich eine besonders einfache Kinematik. Das Stützelement oder die Stützelemente können in beliebiger geeigneter Weise ausgebildet sein. Eine vorteilhafte Weiterbildung sieht vor, daß das Stützelement oder wenigstens eines der Stützelemente als Hebel, insbesondere als Schwenkhebel ausgebildet ist. Erfindungsgemäß kann das Stützelement auf beliebige geeignete Weise in Wirkungsverbindung mit der zugeordneten Schwenkwelle stehen. Beispielsweise kann das Stützelement über ein Zahnradgetriebe mit der zugeordneten Schwenkwelle verbunden sein, so daß ein Verschwenken der Schwenkwelle entsprechend der Übersetzung des Getriebes zu einem Verschwenken des Stützelementes führt. Um den Aufbau besonders einfach und damit ko- stengünstig zu gestalten, sieht eine vorteilhafte Weiterbildung vor, daß das Stützelement oder wenigstens eines der Stützelemente drehfest mit der zugeordneten Schwenkwelle verbunden ist. Um den Raumbedarf des erfindungsgemäßen Möbelan- triebs weiter zu verrringern, sieht eine vorteilhafteThe fact that the pivot shaft is supported by the support element or the support elements on the support surface, the vertical distance of the pivot shaft from 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. According to the invention, for example, a single pivot shaft is provided, which is mounted on one end of the seat part, while the other end around one stationary pivot axis is pivotable, the inclination of the seat part relative to the support surface and thus to the base body of the armchair is adjustable by means of the furniture drive according to the invention. If, on the other hand, the end of the seat part facing away from the pivot shaft is not movably mounted on a fixed pivot axis, but rather, for example, via a link guide, not only the inclination of the seat part relative to the base body can be adjusted by means of a single pivot shaft when using a suitable pivot mechanism, but also its height. If, in particular and for example parallel and spaced apart, at least two swivel shafts are provided, each of which is assigned a swivel drive, then the height of the seat part and its inclination can be adjusted by means of the swivel shafts. The furniture drive according to the invention is simple and inexpensive to manufacture and particularly space-saving. In particular, the furniture drive according to the invention, based on the pivot shaft and the associated pivot drive, has a particularly low overall 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 one another. The furniture drive according to the invention is particularly well suited for adjusting parts of seating furniture, in particular armchairs, relative to one another. In principle, it is sufficient according to the invention if a single pivot shaft is provided for adjusting the inclination of the first part relative to the second part and / or the distance of the first part from the second part. An extremely beneficial one A further development of the teaching according to the invention provides, however, that a further pivot shaft mounted pivotably on the first part is provided in parallel and spaced apart from the pivot shaft, to which a pivot drive is assigned, at least one further support element that is operatively connected to the further pivot shaft being provided is supported on a support surface formed on the second part such that the inclination of the first part relative to the second part and / or the distance of the first part from the second part is adjustable by pivoting the further pivot shaft. In this embodiment, there are a variety of adjustment options in a simple manner. If the furniture drive according to the invention is used, for example, to adjust a seat part of an armchair and both pivot shafts have the same vertical distance from the respective support surface in a starting position, pivoting of the pivot shafts results in such a way that the vertical distance of the pivot shafts from the respective support surface is the same increased, that the seat part is adjusted in its distance from the support surface and thus in its height. The inclination of the seat part remains unchanged. If one of the swivel shafts is swiveled and thus its vertical distance to the associated support surface is increased or decreased, while the other swivel shaft is not swiveled and its vertical distance to the assigned support surface thus remains the same, the inclination of the seat part is adjusted. If, on the other hand, the swivel shafts are swiveled such that the vertical distance between the two swivel shafts from the respective support surface increases or decreases, the inclination of the seat part is adjusted. According to the invention, it is generally sufficient if only one support element is assigned to the swivel shaft or the respective swivel shaft. An advantageous development provides, however, that at least two support elements spaced apart from one another in the axial direction of the respective pivot shaft are assigned to the pivot shaft or at least one of the pivot shafts. In this way, deflection of the pivot shaft away from the support elements is reduced or prevented. In the aforementioned embodiment, in which a further swivel shaft is provided in addition to the swivel shaft, it is particularly advantageous if each of the swivel shafts is assigned two support elements. In this embodiment, the first part is supported at four points on the second part. If required in accordance with the respective requirements, more than two support elements can also be provided per swivel shaft. An advantageous development of the aforementioned embodiment provides that the support elements assigned to a pivot shaft are arranged at the axial ends of the pivot shaft. In this embodiment, the space in the axial direction between the support elements remains free in the radial direction of the pivot shaft, so that the furniture drive is designed to be particularly space-saving. Another advantageous development of the teaching according to the invention provides that at least one of the support elements in the region of its end facing away from the associated pivot shaft has a pin with which the respective support element is guided on or in a guide formed on the second part. This embodiment results in a particularly simple structure, it being 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 assigned to 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 below the seat part is free remains. Advantageous developments of the aforementioned embodiments provide that the pin extends essentially parallel to the axial direction of the associated pivot shaft and / or that the guide is designed as a groove or as a slot. Another development 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, to adjust a seat part relative to a base body of a chair of a swivel shaft, two support elements are assigned, so in this embodiment the pins of the support elements point away from one another, the pins being able to be guided, for example, in guides which are formed in mutually facing surfaces by armrests of the base body are. This embodiment results in a particularly space-saving design, since the space below the pivot shaft and thus the space below the seat part are free of parts of the adjustment mechanism. Then only the support elements protrude from the seat part, specifically at the axial ends of the pivot shaft. Since the support elements can thus be arranged in the area of the armrests, for example, they are not perceived visually or are hardly noticed and are not perceived as disturbing. Basically, the leadership can be according to the desired kinematics have any, for example, arcuate course. However, the guidance expediently runs essentially straight. This embodiment is particularly simple and therefore inexpensive to manufacture. Another development of the embodiment with the guide provides that the longitudinal axis of the guide runs essentially parallel to an imaginary connecting line between the pivot shaft and the further pivot shaft. This embodiment results in particularly simple kinematics. The support element or the support elements can be designed 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 element can be operatively connected to the associated pivot shaft in any suitable manner. For example, the support element can be connected to the associated pivot shaft via a gear transmission, so that pivoting the pivot shaft corresponding to the transmission ratio leads to pivoting of the support element. In order to make the structure particularly simple and therefore inexpensive, an advantageous further development provides that the support element or at least one of the support elements is connected in a rotationally fixed manner to the associated pivot shaft. In order to further reduce the space requirement of the furniture drive according to the invention, sees an advantageous one
Weiterbildung vor, daß das Stützelement oder wenigstens eines der Stützelemente in Axialrichtung der zugeordneten Schwenkwelle flach ausgebildet ist. Grundsätzlich kann als Schwenkantrieb ein manuel- ler Schwenkantrieb vorgesehen sein. Vorteilhafterweise ist jedoch der Schwenkantrieb oder wenigstens einer der Schwenkantriebe als elektromotorioscher Schwenkantrieb ausgebildet. Bei dieser Ausführungsform ist die Ver- Stellung des ersten Teiles relativ zu dem zweiten Teil kraftsparend und komfortabel gestaltet. Ist erfindungsgemäß mehr als eine Schwenkwelle vorgesehen, so kann erfindungsgemäß zum Verschwenken der Schwenkwellen ein gemeinsamer Schwenkantrieb vor- gesehen sein. Eine vorteilhafte Weiterbildung der erfindungsgemäßen Lehre sieht jedoch vor, daß der Schwenkwelle und der weiteren Schwenkwelle jeweils ein separater Schwenkantrieb zugeordnet ist, derart, daß die Schwenkwellen unabhängig voneinander verschwenkbar sind. Bei dieser Ausführungsform kann die Ansteuerung der den Schwenkwellen zugeordneten Schwenkantriebe unabhängig voneinander erfolgen. Die Ansteuerung kann jedoch auch gemeinsam erfolgen, so daß bei der Verstellung des ersten Teiles relativ zu dem zweiten Teil bei- spielsweise eine vorgegebene Kinematik erzielt wird. Eine Weiterbildung der Ausführungsform mit dem elektromotorischen Schwenkantrieb sieht vor, daß der Schwenkantrieb oder wenigstens einer der Schwenkantriebe als Linearantrieb mit einem entlang einer linearen Bewegungsachse beweglichen Abtriebsorgan ausgebildet ist. Derartige Linearantriebe stehen als einfache und kostengünstige Standardbauteile zur Verfügung und sind zur Aufbringung großer Kräfte geeignet . Eine vorteilhafte Weiterbildung der erfindungs- gemäßen Lehre sieht vor, daß das Abtriebsorgan eineFurther development before that the support element or at least one of the support elements is flat in the axial direction of the associated pivot shaft. In principle, a manual ler swivel drive can be provided. However, the swivel drive or at least one of the swivel drives is advantageously designed as an electromotive swivel drive. In this embodiment, the adjustment of the first part relative to the second part is designed to be energy-saving and comfortable. If more than one swivel shaft is provided according to the invention, then according to the invention a common swivel drive can be provided for swiveling the swivel shafts. An advantageous development of the teaching according to the invention, however, provides that the pivot shaft and the further pivot shaft are each assigned a separate pivot drive, in such a way that the pivot shafts can be pivoted independently of one another. In this embodiment, the swivel drives assigned to the swivel shafts can be controlled independently of one another. However, the control can also take place jointly, so that, for example, a predetermined kinematics is achieved when the first part is adjusted relative to the second part. A further development of the embodiment with the electromotive swivel drive provides that the swivel drive or at least one of the swivel drives is designed as a linear drive with an output element movable along a linear axis of movement. Such linear drives are available as simple and inexpensive standard components and are suitable for applying large forces. An advantageous further development of the teaching according to the invention provides that the output element has a
Spindelmutter eines Spindeltriebes ist, die in Axial - richtung beweglich und verdrehsicher auf einer drehan- treibbaren Gewindespindel angeordnet ist. Derartige Spindeltriebe stehen als einfache und kostengünstige Standardbauteile zur Verfügung und sind zur Aufbringung großer Kräfte geeignet . In kinematischer Umkehrung der vorgenannten Aus- führungsform kann das Abtriebsorgan auch durch eine in ihrer Axialrichtung beweglich und verdrehsicher gelagerte Gewindespindel gebildet sein, auf der eine ortsfeste drehantreibbare Spindelmutter angeordnet ist. Bei den vorgenannten Ausführungsformen sind zweckmäßigerweise Mittel zur Umwandlung einer Linearbewegung des Abtriebsorganes in eine Schwenkbewegung der jeweiligen Schwenkwelle vorgesehen. Um die Mittel zur Umwandlung einer Linearbewegung des Abtriebsorganes in eine Schwenkbewegung der jeweil- gen Schwenkwelle besonders einfach und kostengünstig sowie robust zu gestalten, sieht eine vorteilhafte Weiterbildung vor, daß die Mittel zur Umwandlung einer Linearbewegung des Abtriebsorganes in eine Schwenkbewegung der jeweiligen Schwenkwelle eine kurbeltriebartige Anordnung aufweisen, über die das Abtriebsorgan mit der jeweiligen Schwenkwelle in Antriebsverbindung steht. Bei der vorgenannten Ausführungsform weist die kurbeltriebartige Anordnung zweckmäßigerweise einen drehfest mit der jeweiligen Schwenkwelle verbundenen Anlenkhebel auf, mit dem zu der Schwenkwelle exzen- trisch ein Ende eines schubstangenartigen Verbindungselementes verbunden ist, dessen anderes Ende gelenkig mit dem Abtriebsorgan verbunden ist . Eine andere besonders vorteilhafte Weiterbildung der erfindungsgemäßen Lehre sieht vor, daß das Möbel ein Sitzmöbel, insbesondere ein Sessel ist, daß das erste Teil durch ein Polsterungselement, insbesondere ein Sitzteil des Sitzmöbels gebildet ist und daß das zweite Teil durch wenigstens eine in Axialrichtung der Schwenkwelle seitlich von dem Polsterungselement an- geordnete Armlehne gebildet ist. Eine vorteilhafte Weiterbildung der vorgenannten Ausführungsform sieht vor, daß die Armlehne oder wenigstens eine der Armlehnen flachig ausgebildet ist und daß die Führung in einer der anderen Armlehne zugewandten Fläche der jeweiligen Armlehne gebildet ist. Die Erfindung wird nachfolgend anhand der beigefugten Zeichnung näher erläutert, in der ein Ausfüh- rungsbeispiel eines erfindungsgemäßen Möbelantriebs dargestellt ist. Dabei bilden alle beschriebenen oder m der Zeichnung dargestellten Merkmale für sich oder m beliebiger Kombination den Gegenstand der Erfindung, unabhängig von ihrer Zusammenfassung in den Patentansprüchen oder deren Rückbeziehung sowie unabhängig von ihrer Formulierung bzw. Darstellung m der Beschreibung bzw. in der Zeichnung.Spindle nut of a spindle drive is, which is movable in the axial direction and is secured against rotation on a rotationally driven threaded spindle. Such spindle drives are simple and inexpensive Standard components are available and are suitable for applying large forces. In a kinematic reversal of the abovementioned embodiment, the output member can also be formed by a threaded spindle which is mounted so as to be movable and non-rotatable in its axial direction and on which a stationary spindle nut which can be driven in rotation is arranged. In the aforementioned embodiments, means are advantageously provided for converting a linear movement of the output member into a pivoting movement of the respective pivot shaft. In order to make the means for converting a linear movement of the output member into a pivoting movement of the respective pivot shaft particularly simple and inexpensive and robust, an advantageous further development provides that the means for converting a linear movement of the output member into a pivoting movement of the respective pivot shaft have a crank-like arrangement have, via which the output member is in drive connection with the respective pivot shaft. In the above-mentioned embodiment, the crank drive-like arrangement expediently has a pivot lever which is connected to the respective pivot shaft in a manner fixed against relative rotation, with which one end of a connecting rod-like connecting element is connected eccentrically to the pivot shaft, the other end of which is connected in an articulated manner to the output element. Another particularly advantageous development of the teaching according to the invention provides that the furniture is a piece of seating furniture, in particular an armchair, that the first part is formed by an upholstery element, in particular a seating part of the seating furniture, and that the second part is formed laterally by at least one in the axial direction of the pivot shaft from the upholstery element orderly armrest is formed. An advantageous development of the aforementioned embodiment provides that the armrest or at least one of the armrests is flat and that the guide is formed in a surface of the respective armrest facing the other armrest. The invention is explained in more detail below with reference to the attached drawing, in which an exemplary embodiment of a furniture drive according to the invention is shown. All of the features described or shown in the drawing, alone or in any combination, form the subject matter of the invention, regardless of their summary in the patent claims or their relationship, and regardless of their formulation or representation in the description or in the drawing.
Es zeigt : Fig. 1 eine schematische Perspektivansicht ei- nes mit einem Ausführungsbeispiel eines erfindungsgemäßen Möbelantriebs ausgestatteten erfindungsgemäßen Möbels m Form eines Sessels, Fig. 2 eine perspektivische Teildarstellung eines erfindungsgemäßen Möbelantriebs, Fig. 3 den Sessel gemäß Fig. 1 in einer Seitenansicht in einer ersten Verstellposi- tion, wobei eine der Armlehnen weggelassen ist, Fig. 4 eine weitere perspektivische Teildarstellung des erfindungsgemäßen Möbel - antriebs gemäß Fig. 2 in einer ersten Verstellposition, Fig. 5 den Mόbelantπeb 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.1 shows a schematic perspective view of a piece of furniture according to the invention equipped with an embodiment of a furniture drive according to the invention in the form of an armchair, FIG. 2 shows a partial perspective view of a furniture drive according to the invention, FIG. 3 shows the armchair according to FIG first adjustment position, one of the armrests being omitted, FIG. 4 a further partial perspective view of the furniture drive according to the invention according to FIG. 2 in a first adjustment position, FIG. 5 the furniture actuator according to FIG. 4 in one 6, a further partial perspective view of the furniture drive according to FIG. 2, FIG. 7 in the same view as FIG. 6 the furniture drive according to FIG. 6 in a second adjustment position and FIG. 8 the same view as FIG. 3 the armchair 3 in a second adjustment position.
In Fig. 1 ist ein erstes Ausführungsbeispiel eines erfindungsgemäßen Möbels in Form eines Sitzmöbels, nämlich eines Sessels 2 dargestellt, der ein erstes Teil 4 in Form eines als Polsterungselement ausgebildeten Sitzteiles aufweist, das relativ zu einem ein zweites Teil des Möbels bildenden Grundkörper 6 in seiner Höhe und in seiner Neigung verstellbar ist . Zur Verstellung der Höhe bzw. der Neigung des Sitzteiles 4 relativ zu dem Grundkörper 6 ist ein erfindungsgemäßer Möbelan- trieb vorgesehen, der in Fig. 1 nicht erkennbar ist. Der Grundkörper 6 weist seitlich von dem Sitzteil 4 zueinander beabstandete, flächig ausgebildete Armlehnen 8, 10 auf. Ferner weist der Sessel 2 ein gelenkig mit dem Sitzteil 4 verbundenes Wadenteil 12 sowie ein ge- lenkig mit dem Sitzteil 4 verbundenes Oberkörperteil 14 auf, mit dem gelenkig ein Kopfteil 16 verbunden ist. Das Wadenteil 12, das Oberkörperteil 10 und das Kopf- teil 16 interessieren hier jedoch nicht näher und werden daher hier nicht näher erläutert . In Fig. 2 ist ein Ausführungsbeispiel eines erfindungsgemäßen Möbelantriebs 18 zum Verstellen des Sitzteiles 4 relativ zu dem Grundkörper 10 dargestellt, der erfindungsgemäß eine an dem Sitzteil 4 schwenkbar gelagerte Schwenkwelle 20 aufweist. Im einzelnen ist die Schwenkwelle 20 an Längsholmen 22, 24 des Sitzteiles 4 schwenkbar gelagert. Die Längsholme 22, 24 bilden eine tragende Struktur des Sitzteiles 4 und sind zur Oberseite des Sitzteiles 4 mit einer Polsterung versehen (vgl. Fig. 1) , die in Fig. 2 aus Darstellungsgründen weggelassen ist. Mit der Schwenkwelle 20 steht ein Stützelement in Wirkungsverbindung, das bei diesem Ausführungsbeispiel durch einen Schwenkhebel 26 verbunden ist, dessen eines Ende drehfest mit der Schwenkwelle 20 verbunden ist und der im Bereich seines der Schwenkwelle 20 abgewandten Endes einen Zapfen 28 aufweist, mit dem der Schwenkhebel 26 in weiter unten näher erläuterter Weise in einer in der Armlehne 10 gebildeten Führung geführt ist. Der Zapfen 28 erstreckt sich bei diesem Ausführungsbeispiel im wesentlichen parallel zur Axialrichtung der zugeordneten Schwenkwelle 20, wobei das freie Ende des Zapfens 28 von der axialen Mitte der Schwenkwelle 20 wegweist. Aus Fig. 2 ist nicht ersichtlich und deshalb wird hier erläutert, daß mit dem dem Schwenkhebel 26 abgewandten axialen Ende der Schwenkwelle 20 ein weiteres Stützelement in Form eines weiteren Schwenkhebels verbunden ist, der zu dem Schwenkhebel 26 parallel angeordnet ist. Der weitere Schwenkhebel ist so ausgebil- det , wie dies für den Schwenkhebel 26 beschrieben worden ist, wobei sein der Schwenkwelle 20 abgewandtes Ende einen dem Zapfen 28 entsprechenden Zapfen aufweist, mit dem der weitere Schwenkhebel in einer in der Armlehne 8 gebildeten Führung geführt ist. Wie aus Fig. 2 ersichtlich ist, ist der Schwenkhebel 26 in Axialrichtung der zugeordneten Schwenkwelle 20 flach ausgebildet. Zum Verschwenken der Schwenkwelle 20 und damit des Schwenkhebels 26 sowie des weiteren Schwenkhebels ist ein elektromotorischer Schwenkantrieb vorgesehen, der eine Antriebseinheit 29 mit Elektromotor 30 als Antriebsmotor aufweist, dessen in Fig. 2 nicht erkennbare Abtriebswelle als Schnecke ausgebildet ist und mit ei- nem Schneckenrad 32 in Eingriff steht. Der Schwenkantrieb weist bei diesem Ausführungsbeispiel einen Linearantrieb auf, der als Spindeltrieb ausgebildet ist. Eine Gewindespindel 34 des Spindeltriebes ist drehfest mit dem Schneckenrad 32 verbunden, wobei auf der Ge- windespindel 34 eine Spindelmutter 36 mit einem Innengewinde angeordnet ist. Die Spindelmutter 36 ist in Axialrichtung der Gewindespindel 34 entlang einer linearen Bewegungsachse in Richtung eines Doppelpfeiles 38 hin- und herbeweglich auf der Gewindespindel 34 an- geordnet und verdrehsicher geführt. Bei diesem Ausführungsbeispiel sind erfindungsgemäß Mittel zur Umwandlung einer Linearbewegung des Abtriebsorganes entlang der linearen Bewegungsachse in eine Schwenkbewegung der Schwenkwelle 20 vorgesehen, die bei diesem Ausführungsbeispiel eine kurbeltriebartige Anordnung 40 aufweisen, über die die Spindelmutter 36 mit der zugeordneten Schwenkwelle 20 in Antriebsverbindung steht. Die kurbeltriebartige Anordnung 40 weist bei diesem Ausführungsbeispiel einen drehfest mit der Schwenkwelle 20 verbundenen Anlenkhebel 42 auf, mit dem zu der Schwenkwelle 20 exzentrisch ein Ende eines schubstangenartigen Verbindungselementes 40 verbunden ist, dessen anderes Ende gelenkig und zu der Schwenkwelle 20 exzentrisch mit der Spindelmutter 36 verbunden ist. Bei dem in der Zeichnung dargestellten Ausführungsbeispiel weist der Möbelantrieb 18 eine weitere Antriebseinheit 29' auf, die im wesentlichen so aufgebaut ist, wie dies oben für die Antriebseinheit 29 be- schrieben worden ist. Die Bauteile der weiteren Antriebseinheit 29' sind mit Bezugszeichen versehen, die den Bezugszeichen der Bauteile der Antriebseinheit 29 entsprechen. Die weitere Antriebseinheit 29' weist eine weitere Schwenkwelle 20' auf, die an den Längsholmen 22, 24 des Sitzteiles 4 schwenkbar gelagert ist. Mit der weiteren Schwenkwelle 20 ist ein weiterer Schwenkhebel 26' verbunden, dessen der Schwenkwelle 20' abgewandtes Ende einen Zapfen 28' aufweist, mit dem sich die weitereIn Fig. 1 a first embodiment of a piece of furniture according to the invention in the form of a piece of seating furniture, namely an armchair 2 is shown, which has a first part 4 in the form of a seat part designed as an upholstery element, which relative to a base body 6 forming a second part of the piece of furniture in its Height and its inclination is adjustable. To adjust the height or the inclination of the seat part 4 relative to the base body 6, a furniture drive according to the invention is provided, which cannot be seen in FIG. 1. The base body 6 has armrests 8, 10 which are flat and are laterally spaced apart from one another from the seat part 4. Furthermore, the armchair 2 has a calf part 12 which is articulated to the seat part 4 and an upper body part 14 which is articulated to the seat part 4 and to which a head part 16 is articulated. However, the calf part 12, the upper body part 10 and the head part 16 are of no interest here and are therefore not explained in more detail here. 2 shows an exemplary embodiment of a furniture drive 18 according to the invention for adjusting the seat part 4 relative to the base body 10, which according to the invention has a pivot shaft 20 which is pivotably mounted on the seat part 4. In detail it is Swivel shaft 20 on longitudinal bars 22, 24 of the seat part 4 pivotally mounted. The longitudinal bars 22, 24 form a load-bearing structure of the seat part 4 and are provided with upholstery on the upper side of the seat part 4 (cf. FIG. 1), which is omitted in FIG. 2 for reasons of illustration. A support element is operatively connected to the pivot shaft 20, which in this exemplary embodiment is connected by a pivot lever 26, one end of which is connected in a rotationally fixed manner to the pivot shaft 20 and which in the region of its end remote from the pivot shaft 20 has a pin 28 with which the pivot lever 26 is guided in a guide formed in the armrest 10 in a manner explained in more detail below. In this exemplary embodiment, the pin 28 extends essentially parallel to the axial direction of the associated pivot shaft 20, the free end of the pin 28 pointing away from the axial center of the pivot shaft 20. From Fig. 2 is not apparent and therefore it is explained here that the axial end of the pivot shaft 20 facing away from the pivot lever 26 is connected to a further support element in the form of a further pivot lever which is arranged parallel to the pivot lever 26. The further pivot lever is designed as described for the pivot lever 26, its end facing away from the pivot shaft 20 having a pin corresponding to the pin 28, with which the further pivot lever is guided in a guide formed in the armrest 8. As can be seen from FIG. 2, the pivot lever 26 is 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 further pivot lever an electromotive swivel drive is provided which has a drive unit 29 with an electric motor 30 as the drive motor, the output shaft of which cannot be seen in FIG. 2 is designed as a worm and is in engagement with a worm wheel 32. In this exemplary embodiment, the swivel drive has a linear drive which is designed as a spindle drive. A threaded spindle 34 of the spindle drive is connected in a rotationally fixed manner to the worm wheel 32, a spindle nut 36 with an internal thread being arranged on the threaded spindle 34. The spindle nut 36 is arranged in the axial direction of the threaded spindle 34 along a linear movement axis in the direction of a double arrow 38 and can be moved back and forth on the threaded spindle 34 and is secured against rotation. In this exemplary embodiment, means for converting a linear movement of the output member along the linear movement axis into a pivoting movement of the pivot shaft 20 are provided, which in this exemplary embodiment have a crank drive-like arrangement 40 via which the spindle nut 36 is in drive connection with the associated pivot shaft 20. In this exemplary embodiment, the crank drive-like arrangement 40 has a pivot lever 42 which is connected in a rotationally fixed manner to the swivel shaft 20 and to which one end of a connecting rod-like connecting element 40 is connected eccentrically to the swivel shaft 20, the other end of which is articulated and eccentrically connected to the swivel shaft 20 with the spindle nut 36 is. In the embodiment shown in the drawing, the furniture drive 18 has a further drive unit 29 ', which is constructed essentially as described above for the drive unit 29. has been written. The components of the further drive unit 29 ′ are provided with reference symbols which correspond to the reference symbols of the components of the drive unit 29. The further drive unit 29 'has a further pivot shaft 20' which is pivotably mounted on the longitudinal bars 22, 24 of the seat part 4. A further pivot lever 26 'is connected to the further pivot shaft 20, the end of which facing away from the pivot shaft 20' has a pin 28 'with which the further pivot
Schwenkwelle 20' über den weiteren Schwenkhebel 26' an einer Stützfläche abstützt. Die weitere Antriebseinheit 29' weist einen als Spindeltrieb ausgebildeten Linearantrieb mit einem Spindeltrieb auf, dessen Spindelmut - ter 36' das Abtriebsorgan des Linearantriebes bildet und auf einer drehantreibbaren Gewindespindel 34' angeordnet ist, mit der drehfest ein Schneckenrad 32' verbunden ist, das mit einer als Schnecke ausgebildeten Abtriebswelle eines Elektromotors 30' in Eingriff steht. Zur Spannungsversorgung der Antriebseinheiten 29, 29' sind in der Zeichnung nicht dargestellte Spannungs- versorgungsmittel vorgesehen und zur Ansteuerung der Antriebseinheiten 29, 29' sind in der Zeichnung nicht dargestellte Steuermittel vorgesehen. Die Steuermittel sind bei diesem Ausführungsbeispiel derart ausgebildet, daß die Antriebseinheiten 29, 29' unabhängig voneinander ansteuerbar sind. Fig. 3 zeigt den Sessel gemäß Fig. 1, wobei aus Gründen der Darstellung die Armlehne 10 weggelassen ist. Aus Fig. 3 ist ersichtlich, daß mit der Schwenkwelle 20 ein weiteres Stützelement in Form eines weiteren Schwenkhebels 46 vorgesehen ist, der mit dem dem Schwenkhebel 26 abgewandten axialen Ende der Schwenk- welle 20 verbunden ist. Der weitere Schwenkhebel 46 ist so ausgebildet, wie dies anhand von Fig. 2 für den Schwenkhebel 26 beschrieben worden ist. Er weist an seinem der Schwenkwelle 20 abgewandten Ende einen Zap- fen 48 auf, der in einer im wesentlichen gerade und zu einer gedachten Verbindungslinie zwischen den Schwenkwellen 20, 20' parallelen nutartigen Führung 50 in der Armlehne 8 geführt ist. Die untere Fläche 51 der Führung 50 bildet eine Stützfläche, auf der sich die Schwenkwelle 20 über den Schwenkhebel 46 abstützt. Der weitere Schwenkhebel 46 ist zu dem Schwenkhebel 26 parallel drehfest mit der Schwenkwelle 20 verbunden. Mit der weiteren Schwenkwelle 20' ist ein weiteres Stützelement in Form eines weiteren Schwenkhebels 46' verbunden, der so aufgebaut ist, wie dies oben anhand von Fig. 2 für den Schwenkhebel 46' beschrieben worden ist. Der weitere Schwenkhebel 46' ist drehfest mit der Schwenkwelle 20' verbunden und weist an seinem der Schwenkwelle 20' abgewandten Ende einen Zapfen 48' auf, mit dem er in einer in der Armlehne 8 gebildeten Führung 50' geführt ist, die bei diesem Ausführungsbeispiel im wesentlichen gerade und parallel zu einer gedachten Verbindungslinie zwischen den Schwenkwellen 20, 20' verläuft. Die Funktionsweise des erfindungsgemäßen Möbel - antriebs wird nachfolgend anhand der Figuren 4 bis 7 beschrieben. Fig. 4 zeigt den Möbelantrieb 18 in einer Verstellposition, in der sich das Sitzteil 20, wie in Fig. 3 dargestellt, in einer angehobenen Position befindet. Um das Sitzteil 4 aus dieser angehobenen Position abzusenken, treibt der Elektromotor 30 die Gewindespindel 34 derart an, daß sich die Spinelmutter 36 in Fig. 4 nach rechts bewegt. Bei der Bewegung in Fig. 4 nach rechts verschwenkt die Spindelmutter 36 den drehfest mit der Schwenkwelle 20 verbundenen Anlenkhebel 42 der kurbeltriebartigen Anordnung 40 in Fig. 4 im Uhrzeigersinn, so daß die Schwenkwelle 20 m Fig. 4 ebenfalls im Uhrzeigersinn verschwenkt wird. Aufgrund der drehfesten Verbindung der die Stützelemente bildenden Schwenkhebel 26, 46 verschwenken hierbei die Schwenkhebel 26, 46 ebenfalls in Fig. 4 im Uhrzeigersinn, bis die in Fig. 5 dargestellte Endlage der Verschwenkbewegung erreicht ist. Da sich die Schwenkhebel 26, 46 mit ihrem Zapfen 28 bzw. 48 auf der Stützfläche 51 der jeweils zugeordneten Führung (vgl. Fig. 3 für den Schwenkhebel 46) abstutzen, verringert sich beim Verschwenken des Schwenkhebels 46 der vertikale Abstand der Schwenkwelle 20 zu einer in Längsrichtung der Führung 50 verlaufenden gedachten Linie, so daß das dem Wadenteil 12 zugewandte Ende des Sitzteiles 4 abgesenkt wird. Gleichzeitig treibt der Elektromotor 30' der Antriebseinheit 29', die m Fig. 6 erkennbar ist, die Gewindespindel 34' derart an, daß sich die Spindelmutter 36' in Fig. 6 nach links bewegt. Hierbei verschwenkt die Spindelmutter 36' den Anlenkhebel 42' der kurbeltriebartigen Anordnung 40' in Fig. 6 entgegen dem Uhrzeigersinn, so daß die Schwenkwelle 20' ebenfalls in Fig. 6 entgegen dem Uhrzeigersinn verschwenkt wird.Swivel shaft 20 'is supported on a support surface via the further swivel lever 26'. The further drive unit 29 'has a linear drive designed as a spindle drive with a spindle drive, the spindle nut 36' of which forms the output element of the linear drive and is arranged on a threaded spindle 34 'which can be driven in rotation and with which a worm wheel 32' is connected in a rotationally fixed manner and which is connected to a designed as a worm output shaft of an electric motor 30 'is engaged. Voltage supply means, not shown in the drawing, are provided for supplying power to the drive units 29, 29 'and control means, not shown in the drawing, are provided for controlling the drive units 29, 29'. The control means are designed in this embodiment such that the drive units 29, 29 'can be controlled independently of one another. FIG. 3 shows the armchair according to FIG. 1, the armrest 10 being omitted for reasons of illustration. From Fig. 3 it can be seen that a further support element in the form of a further pivot lever 46 is provided with the pivot shaft 20, which with the axial end facing away from the pivot lever 26 of the pivot shaft 20 is connected. The further pivot lever 46 is designed as described for the pivot lever 26 with reference to FIG. 2. At its end facing away from the pivot shaft 20, it has a pin 48 which is guided in a substantially straight groove-like guide 50 in the armrest 8 which is parallel to an imaginary connecting line between the pivot shafts 20, 20 '. 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 in a rotationally fixed manner to the pivot shaft 20 parallel to the pivot lever 26. A further support element in the form of a further pivot lever 46 'is connected to the further pivot shaft 20' and is constructed as described above for the pivot lever 46 'with reference to FIG. 2. The further pivot lever 46 'is rotatably connected to the pivot shaft 20' and has at its end remote from the pivot shaft 20 'a pin 48' with which it is guided in a guide 50 'formed in the armrest 8, which in this embodiment in runs essentially straight and parallel to an imaginary connecting line between the pivot shafts 20, 20 '. The mode of operation of the furniture drive according to the invention is described below with reference to FIGS. 4 to 7. FIG. 4 shows the furniture drive 18 in an adjustment position in which the seat part 20, as shown in FIG. 3, is in a raised position. In order to lower the seat part 4 from this raised position, the electric motor 30 drives the threaded spindle 34 in such a way that the spinel nut 36 moves to the right in FIG. 4. When moving in Fig. 4 after on the right, the spindle nut 36 pivots the articulated lever 42 of the crankshaft-like arrangement 40 in FIG. 4, which is connected in a rotationally fixed manner to the pivot shaft 20, so that the pivot shaft 20 m in FIG. 4 is also pivoted clockwise. Due to the rotationally fixed connection of the pivoting levers 26, 46 forming the supporting elements, the pivoting levers 26, 46 also pivot clockwise in FIG. 4 until the end position of the pivoting movement shown in FIG. 5 is reached. Since the pivot levers 26, 46 are supported with their journals 28 and 48 on the support surface 51 of the respectively assigned guide (cf. FIG. 3 for the pivot lever 46), the vertical distance of the pivot shaft 20 is reduced when the pivot lever 46 is pivoted in the longitudinal direction of the guide 50 imaginary line, so that the calf portion 12 facing the end of the seat portion 4 is lowered. At the same time, the electric motor 30 'of the drive unit 29', which can be seen in FIG. 6, drives the threaded spindle 34 'in such a way that the spindle nut 36' moves to the left in FIG. 6. Here, the spindle nut 36 'pivots the articulated lever 42' of the crank-like arrangement 40 'in FIG. 6 counterclockwise, so that the pivot shaft 20' is also pivoted counterclockwise in FIG. 6.
Aufgrund der drehfesten Verbindung der die Stützelemente bildenden Schwenkhebel 26', 46' mit der Schwenkwelle 20 werden hierbei die Schwenkhebel 26', 46' m Fig. 6 entgegen dem Uhrzeigersinn verschwenkt, bis die m Fig 7 dargestellte Endlage dieser Verschwenkbewegung erreicht ist. Da sich die Schwenkhebel 26', 46' mit ihrem jeweiligen Zapfen 28' bzw. 48' an der an der Führung 50' gebildeten Stützfläche abstützen, wird während dieser Schwenkbewegung das dem Wadenteil 12 abgewandte Ende des Sitzteiles 4 abgesenkt. Erfolgt die Ansteuerung der Antriebseinheit 29 und der Antriebseinheit 29' synchron, so wird das Sitzteil aus der in Fig. 3 dargestellten angehobenen Verstellage in die in Fig. 8 dargestellte Verstellage abgesenkt. Ein erneutes Anheben des Sitzteiles 4 in die angehobene Position erfolgt durch eine entgegengesetzte Ansteuerung der Antriebseinheit 29, 29' . Bei einer synchronen Ansteuerung der Antriebseinheiten 29, 29' bleibt die Neigung des Sitzteiles 4' während der Höhenverstellung konstant. Falls die Neigung des Sitzteiles 4 relativ zu dem Grundkörper 6 verstellt werden soll, so kann dies beispielsweise dadurch erfolgen, daß nur die Antriebsein- heit 29 angesteuert wird, während die Antriebseinheit 29' stillgesetzt bleibt, so daß ausgehend von der in Fig. 3 dargestellten Verstellposition der Schwenkhebel 46 in Fig. 3 im Uhrzeigersinn verschwenkt und somit das dem Wadenteil 12 zugewandte Ende des Sitzteiles 4 abge- senkt wird. Soll demgegenüber das dem Wadenteil 12 abgewandte Ende des Sitzteiles 4 abgesenkt werden, so wird die Antriebseinheit 29' so angesteuert, daß der Schwenkhebel 46' in Fig. 3 entgegen dem Uhrzeigersinn verschwenkt, während die Antriebseinheit 29 stillge- setzt ist. Der erfindungsgemäße Möbelantrieb 18 ist einfach und kostengünstig im Aufbau und robust. Ein besonderer Vorteil besteht darin, daß zur Unterseite des Sitzteiles 4 lediglich die in Axialrichtung der Schwenkwellen 20, 20' sehr schmalen Schwenkhebel 26, 26' und 46, 46' hervorstehen. Die Schwenkhebel 26, 26' und 46, 46' befinden sich in unmittelbarer Nähe der Armlehnen 6, 8 und sind sowohl in der in Fig. 3 dargestellten angehobenen Position des Sitzteiles 4 als auch in der in Fig. 8 abgesenkten Position des Sitzteiles 4 optisch nicht oder kaum wahrnehmbar. Da ansonsten entlang der gesamten axialen Ausdehnung der Schwenkwellen 20, 20' keinerlei Bauteile der Verstellmechanik nach unten über das Sitzteil 4 hervorstehen, ist der gesamte Raum unterhalb des Sitzteiles 4 frei. Da ferner die Antriebseinheiten 29, 29' überstandstrei m das Sitzteil 4 integriert sind, ist der erfmdungsgemaße Mobelantrieb trotz vielf ltiger Verstellmoglichkeiten hinsichtlich der Hohe und Neigung des Sitzteiles 4 optisch kaum wahrnehmbar. Der erfmdungsgemaße Sessel 2 weist daher ein besonders ansprechendes äußeres Erscheinungsbild auf, das sich kaum von dem optischen Erscheinungsbild eines nicht verstellbaren Sessels unterscheidet. Due to the rotationally fixed connection of the pivoting levers 26 ', 46' forming the supporting elements to the pivoting shaft 20, the pivoting levers 26 ', 46' m in FIG. 6 are pivoted counterclockwise until the end position of this pivoting movement shown in FIG. 7 is reached. Since the pivot levers 26 ', 46' are supported with their respective pins 28 'and 48' on the support surface formed on the guide 50 ', the calf part 12 becomes averted during this pivoting movement Lowered end of the seat part 4. If the drive unit 29 and the drive unit 29 'are actuated synchronously, the seat part is lowered from the raised adjustment position shown in FIG. 3 to the adjustment position shown in FIG. 8. A renewed lifting of the seat part 4 into the raised position takes place by an opposite actuation of the drive unit 29, 29 '. When the drive units 29, 29 'are actuated synchronously, 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 base body 6, this can be done, for example, by driving only the drive unit 29 while the drive unit 29 'remains stopped, so that starting from the one shown in FIG 3 pivoted clockwise in FIG. 3 and thus the end of the seat part 4 facing the calf part 12 is lowered. If, on the other hand, the end of the seat part 4 facing away from the calf part 12 is to be lowered, the drive unit 29 'is actuated in such a way that the pivot lever 46' in FIG. 3 pivots 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 only the very narrow pivot levers 26, 26 'and 46, 46' protrude from the underside of the seat part 4 in the axial direction of the pivot shafts 20, 20 '. The pivot levers 26, 26 'and 46, 46' are in the immediate vicinity of the armrests 6, 8 and are both in the raised position of the seat part 4 shown in FIG. 3 and in the position shown in FIG. 8 lowered position of the seat part 4 optically not or hardly noticeable. Since no other components of the adjustment mechanism protrude downward beyond the seat part 4 along the entire axial extent of the pivot shafts 20, 20 ′, the entire space below the seat part 4 is free. Furthermore, since the drive units 29, 29 'are integrated into the seat part 4, the furniture drive according to the invention is hardly noticeable in spite of various adjustment options with regard to the height and inclination of the seat part 4. The armchair 2 according to the invention therefore has a particularly appealing external appearance which hardly differs from the visual appearance of a non-adjustable armchair.

Claims

Patentansprüche claims
1. Möbelantrieb zum Verstellen eines ersten Teiles eines Möbels relativ zu einem zweiten Teil des Möbels,1. Furniture drive for adjusting a first part of a piece of furniture relative to a second part of the piece of furniture,
mit wenigstens einer an dem ersten Teil schwenkbar ge- lagerten Schwenkwelle (20) , der ein Schwenkantrieb zugeordnet ist, undwith at least one pivot shaft (20) pivotably mounted on the first part and associated with a pivot drive, and
mit wenigstens einem mit der Schwenkwelle (20) in Wirkungsverbindung stehenden Stützelement (26, 46), über das sich die erste Schwenkwelle (20) an einer an dem zweiten Teil gebildeten Stützfläche derart abstützt, daß durch Verschwenken der Schwenkwelle (20) die Neigung des ersten Teiles relativ zu dem zweiten Teil und/oder der Abstand des ersten Teiles von dem zweiten Teil verstellbar ist.with at least one support element (26, 46) in operative connection with the swivel shaft (20), via which the first swivel shaft (20) is supported on a support surface formed on the second part in such a way that by pivoting the swivel shaft (20) the inclination of the first part relative to the second part and / or the distance of the first part from the second part is adjustable.
2. Möbelantrieb nach Anspruch 1, dadurch gekennzeichnet, daß parallel und beabstandet zu der Schwenkwelle2. Furniture drive according to claim 1, characterized in that parallel and spaced from the pivot shaft
(20) eine weitere an dem ersten Teil schwenkbar gela- gerte Schwenkwelle (20') vorgesehen ist, der ein(20) there is a further pivot shaft (20 ') which is pivotably mounted on the first part and which is a
Schwenkantrieb zugeordnet ist, wobei wenigstens ein mit der weiteren Schwenkwelle (20') in Wirkungsverbindung stehendes weiteres Stützelement (26', 46 ') orgesehen ist, das sich an einer an dem zweiten Teil gebildeten Stützfläche derart abstützt, daß durch Verschwenken der weiteren Schwenkwelle (20') die Neigung des ersten Teiles relativ zu dem zweiten Teil und/oder der Abstand des ersten Teiles zu dem zweiten Teil verstellbar ist. Swivel drive is assigned, at least one further support element (26 ', 46') which is operatively connected to the further swivel shaft (20 ') and which is supported on a support surface formed on the second part in such a way that by pivoting the further swivel shaft ( 20 ') the inclination of the first part relative to the second part and / or the distance of the first part from the second part is adjustable.
3. Möbelantrieb nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Schwenkwelle (20) oder wenigstens einer der Schwenkwellen (20, 20') wenigstens zwei in Axialrichtung der jeweiligen Schwenkwelle (20, 20') zueinander beabstandete Stützelemente (26, 46) zugeordnet sind.3. Furniture drive according to claim 1 or 2, characterized in that the pivot shaft (20) or at least one of the pivot shafts (20, 20 ') at least two in the axial direction of the respective pivot shaft (20, 20') spaced apart support elements (26, 46) assigned.
4. Möbelantrieb nach Anspruch 3, dadurch gekennzeichnet, daß die einer Schwenkwelle zugeordneten Stützele- mente (26, 46; 26', 46') an den axialen Enden der Schwenkwelle (20; 20 ') angeordnet sind.4. Furniture drive according to claim 3, characterized in that the support elements assigned to a pivot shaft (26, 46; 26 ', 46') are arranged at the axial ends of the pivot shaft (20; 20 ').
5. Möbelantrieb nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß wenigstens eines der Stützelemente (26, 46, 26', 46') im Bereich seines der zugeordneten Schwenkwelle (20, 20 ') abgewandten Endes einen Zapfen (28, 48, 28', 48') aufweist, mit dem das jeweilige Stützelement an oder in einer an dem zweiten Teil gebildeten Führung (50, 50') geführt ist.5. Furniture drive according to claim 3 or 4, characterized in that at least one of the support elements (26, 46, 26 ', 46') in the region of its end facing away from the associated pivot shaft (20, 20 ') has a pin (28, 48, 28 ', 48') with which the respective support element is guided on or in a guide (50, 50 ') formed on the second part.
6. Möbelantrieb nach Anspruch 5, dadurch gekennzeichnet, daß sich der Zapfen (28, 48, 28', 48') im wesentlichen parallel zur Axialrichtung der zugeordneten Schwenkwelle (20, 20') erstreckt.6. Furniture drive according to claim 5, characterized in that the pin (28, 48, 28 ', 48') extends substantially parallel to the axial direction of the associated pivot shaft (20, 20 ').
7. Möbelantrieb nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Führung als Nut oder als Schlitz ausgebildet ist .7. Furniture drive according to claim 5 or 6, characterized in that the guide is designed as a groove or as a slot.
8. Möbelantrieb nach Anspruch 5, 6 oder 7, dadurch gekennzeichnet, daß das freie Ende des Zapfens (28, 48; 28', 48') von der axialen Mitte der zugeordneten Schwenkwelle (20, 20') wegweist. 8. Furniture drive according to claim 5, 6 or 7, characterized in that the free end of the pin (28, 48; 28 ', 48') points away from the axial center of the associated pivot shaft (20, 20 ').
9. Möbelantrieb nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, daß die Führung (50, 50') im wesentlichen gerade verläuft.9. Furniture drive according to one of claims 5 to 8, characterized in that the guide (50, 50 ') is substantially straight.
10. Möbelantrieb nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, daß die Längsachse der Führung10. Furniture drive according to one of claims 5 to 9, characterized in that the longitudinal axis of the guide
(50, 50') zu einer gedachten Verbindungslinie zwischen der Schwenkwelle (20) und der weiteren Schwenkwelle (20') im wesentlichen parallel verläuft.(50, 50 ') to an imaginary connecting line between the pivot shaft (20) and the further pivot shaft (20') runs essentially parallel.
11. Möbelantrieb nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Stützelement oder wenigstens eines der Stützelemente (26, 46, 26', 46') als Hebel, insbesondere als Schwenkhebel, ausgebildet ist.11. Furniture drive according to one of the preceding claims, characterized in that the support element or at least one of the support elements (26, 46, 26 ', 46') is designed as a lever, in particular as a pivot lever.
12. MÖbelantrieb nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Stützelement oder wenigstens eines der Stützelemente (26, 46, 26', 46') drehfest mit der zugeordneten Schwenkwelle (20, 20') verbunden ist .12. Furniture drive according to one of the preceding claims, characterized in that the support element or at least one of the support elements (26, 46, 26 ', 46') is rotatably connected to the associated pivot shaft (20, 20 ').
13. Möbelantrieb nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Stützelement oder wenigstens eines der Stützelemente (26, 46, 26', 46') in Axialrichtung der zugeordneten Schwenkwelle (20, 20') flach ausgebildet ist.13. Furniture drive according to one of the preceding claims, characterized in that the support element or at least one of the support elements (26, 46, 26 ', 46') in the axial direction of the associated pivot shaft (20, 20 ') is flat.
14. Möbelantrieb nach einem der vorhergehenden Ansprü- ehe, dadurch gekennzeichnet, daß der Schwenkantrieb oder wenigstens einer der Schwenkantriebe als elektromotorischer Schwenkantrieb ausgebildet ist.14. Furniture drive according to one of the preceding claims, characterized in that the swivel drive or at least one of the swivel drives is designed as an electromotive swivel drive.
15. Möbelantrieb nach einem der Ansprüche 2 bis 14, dadurch gekennzeichnet, daß der Schwenkwelle (20) und der weiteren Schwenkwelle (20') jeweils ein separater Schwenkantrieb zugeordnet ist, derart, daß die Schwenkwellen (20, 20') unabhängig voneinander verschwenkbar sind.15. Furniture drive according to one of claims 2 to 14, characterized in that the pivot shaft (20) and the further pivot shaft (20 ') are each assigned a separate pivot drive, such that the pivot shafts (20, 20') can be pivoted independently of one another.
16. Möbelantrieb nach Anspruch 14 oder 15, dadurch gekennzeichnet, daß der Schwenkantrieb oder wenigstens einer der Schwenkantriebe als Linearantrieb mit einem entlang einer linearen Bewegungsachse beweglichen Abtriebsorgan ausgebildet ist.16. Furniture drive according to claim 14 or 15, characterized in that the swivel drive or at least one of the swivel drives is designed as a linear drive with an output member movable along a linear axis of movement.
17. Möbelantrieb nach Anspruch 16, dadurch gekennzeichnet, daß das Abtriebsorgan eine Spindelmutter (36) eines Spindeltriebes (34, 36) ist, die in Axialrichtung beweglich und verdrehsicher auf einer drehantreibbaren Gewindespindel (34) angeordnet ist.17. Furniture drive according to claim 16, characterized in that the output member is a spindle nut (36) of a spindle drive (34, 36) which is arranged in an axially movable and non-rotatable manner on a rotationally drivable threaded spindle (34).
18. Möbelantrieb nach Anspruch 16, dadurch gekenn- zeichnet, daß das Abtriebsorgan durch eine in ihrer18. Furniture drive according to claim 16, characterized in that the output member by one in their
Axialrichtung beweglich und verdrehsicher gelaserte Gewindespindel gebildet ist, auf der eine ortsfeste drehantreibbare Spindelmutter angeordnet ist .Axial direction movable and rotatably lasered threaded spindle is formed, on which a fixed spindle nut which can be driven in rotation is arranged.
19. Möbelantrieb nach einem der Ansprüche 16 bis 18, gekennzeichnet durch Mittel zur Umwandlung einer Linearbewegung des Abtriebsorganes in eine Schwenkbewegung der jeweiligen Schwenkwelle (20, 20') .19. Furniture drive according to one of claims 16 to 18, characterized by means for converting a linear movement of the output member into a pivoting movement of the respective pivot shaft (20, 20 ').
20. Möbelantrieb nach Anspruch 19, dadurch gekennzeichnet, daß die Mittel zur Umwandlung einer Linearbewegung des Abtriebsorganes in eine Schwenkbewegung der jeweiligen Schwenkwelle (20, 20') eine kurbeltriebartige Anordnung (40, 40 ') aufweisen, über die das Abtriebs- organ mit der jeweiligen Schwenkwelle (20, 20') in An- triebsverbindung steht.20. Furniture drive according to claim 19, characterized in that the means for converting a linear movement of the output member into a pivoting movement of the respective pivot shaft (20, 20 ') have a crank drive-like arrangement (40, 40') via which the output organ is in drive connection with the respective swivel shaft (20, 20 ').
21. Möbelantrieb nach Anspruch 20, dadurch gekenn- zeichnet, daß die kurbeltriebartige Anordnung einen drehfest mit der jeweiligen Schwenkwelle (20, 20') verbundenen Anlenkhebel (42, 42') aufweist, mit dem zu der Schwenkwelle (20, 20 ') exzentrisch ein Ende eines schubstangenar igen Verbindungselementes (44, 44') verbunden ist, dessen anderes Ende gelenkig mit dem Abtriebsorgan verbunden ist .21. Furniture drive according to claim 20, characterized in that the crank drive-like arrangement has a pivotally connected to the respective pivot shaft (20, 20 ') articulated lever (42, 42') with which to the pivot shaft (20, 20 ') eccentrically one end of a connecting rod-like connecting element (44, 44 ') is connected, the other end of which is connected in an articulated manner to the output element.
22. Möbelantrieb nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Möbel ein Sitzmö- bei, insbesondere ein Sessel (2), ist, daß das erste Teil durch ein Polsterungselement, insbesondere ein Sitzteil, des Sitzmöbels gebildet ist und daß das zweite Teil durch wenigstens eine in Axialrichtung der Schwenkwelle (20) seitlich von dem Polsterungselement angeordnete Armlehne (8, 10) gebildet ist.22. Furniture drive according to one of the preceding claims, characterized in that the furniture is a seat, in particular an armchair (2), that the first part is formed by a cushioning element, in particular a seat part, of the seat and that the second part is formed by at least one armrest (8, 10) arranged laterally from the upholstery element in the axial direction of the swivel shaft (20).
23. Möbelantrieb nach Anspruch 27, dadurch gekennzeichnet, daß die Armlehne oder wenigstens eine der Armlehnen (8, 10) flächig ausgebildet ist, und daß die Führung in einer der anderen Armlehne (10, 8) zugewandten Fläche der jeweiligen Armlehne (8, 10) gebildet ist . 23. Furniture drive according to claim 27, characterized in that the armrest or at least one of the armrests (8, 10) is flat, and that the guide in one of the other armrest (10, 8) facing surface of the respective armrest (8, 10th ) is formed.
EP05700905A 2003-01-15 2005-01-14 Drive for furniture for adjusting a first furniture part in relation to a second part Revoked EP1708595B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10301326A DE10301326A1 (en) 2003-01-15 2003-01-15 Seating furniture, in particular armchairs
PCT/EP2004/000244 WO2004062435A1 (en) 2003-01-15 2004-01-15 Adjustable piece of seating furniture
PCT/EP2005/000302 WO2005067765A2 (en) 2003-01-15 2005-01-14 Drive for furniture for adjusting a first furniture part in relation to a second part

Publications (2)

Publication Number Publication Date
EP1708595A2 true EP1708595A2 (en) 2006-10-11
EP1708595B1 EP1708595B1 (en) 2008-03-26

Family

ID=39650927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05700905A Revoked EP1708595B1 (en) 2003-01-15 2005-01-14 Drive for furniture for adjusting a first furniture part in relation to a second part

Country Status (4)

Country Link
US (1) US7404603B2 (en)
EP (1) EP1708595B1 (en)
ES (1) ES2304681T3 (en)
WO (1) WO2005067765A2 (en)

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Also Published As

Publication number Publication date
US7404603B2 (en) 2008-07-29
WO2005067765A2 (en) 2005-07-28
EP1708595B1 (en) 2008-03-26
ES2304681T3 (en) 2008-10-16
US20060253984A1 (en) 2006-11-16
WO2005067765A3 (en) 2005-09-29

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