EP1416832A1 - Drive for furniture for displacing parts of furniture in relation to one another - Google Patents

Drive for furniture for displacing parts of furniture in relation to one another

Info

Publication number
EP1416832A1
EP1416832A1 EP02772121A EP02772121A EP1416832A1 EP 1416832 A1 EP1416832 A1 EP 1416832A1 EP 02772121 A EP02772121 A EP 02772121A EP 02772121 A EP02772121 A EP 02772121A EP 1416832 A1 EP1416832 A1 EP 1416832A1
Authority
EP
European Patent Office
Prior art keywords
lever
furniture
drive
adjusting
adjusting element
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
EP02772121A
Other languages
German (de)
French (fr)
Other versions
EP1416832B1 (en
EP1416832B2 (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.)
Linak AS
Original Assignee
Cimosys AG
Linak AS
Cimosys Ltd
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
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Application filed by Cimosys AG, Linak AS, Cimosys Ltd filed Critical Cimosys AG
Publication of EP1416832A1 publication Critical patent/EP1416832A1/en
Publication of EP1416832B1 publication Critical patent/EP1416832B1/en
Application granted granted Critical
Publication of EP1416832B2 publication Critical patent/EP1416832B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C20/00Head -, foot -, or like rests for beds, sofas or the like
    • A47C20/04Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/041Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination by electric motors

Definitions

  • the invention relates to a furniture drive of the type mentioned in the preamble of claim 1 for adjusting parts of a piece of furniture relative to one another.
  • a furniture drive of the type in question which has a base body in the form of a housing, on which an adjusting element is pivotably mounted for adjusting a part of the furniture.
  • the known furniture drive also has a drive element which is in drive connection with the adjusting element for adjusting the same.
  • the invention has for its object to provide a furniture drive of the type mentioned in the preamble of claim 1, which is simple and inexpensive to manufacture, which is robust in construction and suitable for applying large forces.
  • a lever mechanism is arranged in the drive train between the drive element and the adjusting element.
  • the furniture drive according to the invention is simple and inexpensive to manufacture, robust in construction and suitable for applying large forces.
  • An extremely advantageous development of the teaching of claim 1 provides that the drive element or an intermediate part connected thereto loosely acts on a lever of the lever mechanism.
  • the adjustment element is adjusted from an initial position to an adjustment position in that the drive element or the intermediate part acts on an lever of the lever mechanism with an adjustment force.
  • the adjustment element is reset from the adjustment position back to the starting position under the weight of a part of a piece of furniture adjusted with the adjustment element, for example a support part of a slatted frame.
  • the adjusting element with the lever gear can be moved freely from the starting position into the adjusting position when the drive is switched off, so that, for example, the installation of the drive in a piece of furniture, for example a piece of furniture Slatted frame, is simplified.
  • the intermediate part is a slide which is operatively connected to a lever of the lifting mechanism which can be subjected to pressure when the adjusting element is adjusted.
  • This embodiment is particularly simple and inexpensive to manufacture.
  • the slider can be designed in any suitable manner, for example formed by a spindle nut or a part connected to an adjusting spindle.
  • the lever mechanism is spaced apart from one another on at least two in the circumferential direction of the pivot axis of the adjusting element. deten places on the adjusting element attacks. In this way, based on the pivot axis of the adjusting element, a uniform introduction of the force exerted by the lever mechanism into the adjusting element is achieved in the circumferential direction. Tension and twisting of the adjustment element are thus reliably avoided.
  • a particularly uniform introduction of force results from the fact that the lever mechanism acts on the adjusting element at at least two points diametrically opposite one another with respect to the pivot axis, as is provided by a development of the aforementioned embodiment.
  • the structure of the lever mechanism can be selected within wide limits in accordance with the respective requirements, it being possible, for example, to use single-arm levers, two-arm levers or angle levers or other levers.
  • the number of levers and their length ratios can be selected within wide limits in order to set a desired reduction ratio.
  • the lever mechanism has a first lever, one end of which is articulated on the adjusting element and which is in power transmission connection with the drive element.
  • the lever mechanism has a second lever which is articulated on the adjusting element, one of the levers stressing the adjusting element in tension and the other lever stressing the adjusting element in compression for adjusting the adjusting element. This embodiment is simple and therefore inexpensive to manufacture.
  • first lever and the second levers are coupled to one another by coupling means.
  • the coupling means ensures that the two levers perform the movements required for adjusting the adjusting element in a coordinated manner.
  • the coupling means can be designed in any suitable manner. A particularly simple and therefore inexpensive to develop the embodiment with the coupling means provides that the coupling means have a third lever.
  • the third lever is expediently a two-armed lever, one lever arm of which is articulated on the first lever and the other lever arm of which is articulated on the second lever.
  • This embodiment is particularly simple in construction and thus particularly inexpensive to manufacture. In addition, it is particularly robust.
  • the drive element of the furniture drive according to the invention is expediently a linearly movable drive element.
  • the linearly movable drive element is a spindle nut which is secured against rotation and is movable in the axial direction on an adjusting spindle which can be driven in rotation.
  • spindle drives are available as simple and inexpensive standard components and are suitable for applying large forces.
  • the linearly movable drive element can, however, also be an adjusting spindle which is movable in the axial direction and guided against rotation, on which a spindle nut which can be driven in rotation is arranged.
  • Adjustment element can be connected in a rotationally fixed manner to a rotatably mounted shaft which, in the assembly position of the furniture drive, is operatively connected to part of the furniture for adjusting the same.
  • This embodiment is simple in construction and particularly robust, so that particularly large forces can be applied with the furniture drive according to the invention in accordance with this embodiment.
  • the assembly of the furniture drive on a piece of furniture is simplified.
  • the adjusting element can be positively connected to the shaft to form a rotationally fixed connection. This embodiment is also particularly robust and suitable for transmitting particularly large forces.
  • the shafts have a non-circular cross-section and in the assembly position of the furniture drive engages in a form-fitting manner in a recess of the adjusting element which is essentially complementary to the cross-section of the shaft.
  • This embodiment is particularly simple in construction and thus particularly inexpensive to manufacture.
  • it is particularly robust and facilitates the assembly of the furniture drive on the furniture.
  • the recess of the pivot lever is designed to be open in the radial direction of the shaft. This facilitates the insertion of the shaft into the recess when assembling the furniture drive according to the invention.
  • locking means can be provided for locking the shaft in the recess if necessary.
  • a motor-driven support device provided with a furniture drive according to the invention for upholstering seating and / or reclining furniture, for example a mattress of a bed, is specified in claim 19.
  • Claim 20 specifies a development of the support device according to the invention.
  • a seating and / or reclining furniture provided with a support device according to the invention is specified in claim 21.
  • FIG. 1 shows a schematic side view of an embodiment of a support device according to the invention in the form of a slatted frame, the support parts of the support device not being adjusted relative to one another,
  • FIG. 3 in a highly schematic side view of part of an exemplary embodiment of a furniture drive according to the invention designed as a double drive in a first adjustment position, one half of the housing being omitted for illustration, 4 in the same representation as FIG. 3, but on a smaller scale, the furniture drive according to FIG. 3 in a second version Position, Fig. 5 in the same representation as Fig. 4 the
  • FIG. 3 in a third adjustment position and FIG. 6 on a smaller scale compared to FIG. 3 the furniture drive according to FIG. 3, with half of the housing being omitted for the sake of illustration and both drive units of the double drive being shown.
  • FIG. 1 shows an embodiment of a support device 2 according to the invention in the form of a slatted frame for supporting an upholstery of a seating and / or reclining furniture (not shown in the drawing), for example a mattress of a bed.
  • the support device 2 has a plurality of support parts which can be pivoted relative to one another about parallel horizontal pivot axes and serves to support the upholstery of the seating and / or reclining furniture (not shown in the drawing).
  • the support device 2 has a central support part 4, which is articulated on one side and pivotable about a horizontal pivot axis with a leg support part 6, which is articulated on its side facing away from the central support part 4 and pivotable about a horizontal pivot axis with a calf support part 8 connected is.
  • the middle support part 4 is articulated on its side facing away from the leg support part 6 and pivotable about a horizontal pivot axis with an upper body support part 10, which is articulated on its side facing away from the center support part 4 and pivotable about a horizontal pivot axis with a head support part 12 is connected.
  • an adjusting lever 14 is provided, one end 16 of which is articulated on the calf support part 8 and the other end 18 of which is rotatably connected to one not shown in the drawing about a horizontal axis of rotation Frame of the support device 2 rotatably mounted shaft 20 is connected in the form of a square shaft.
  • a further adjustment lever 22 is provided, one end 23 of which is rotatably mounted with a shaft 24 which is rotatably mounted about a horizontal axis of rotation on the frame of the support device 2 which is not shown in the drawing is connected in the form of a square shaft and the other end 26 is connected to an end 28 of a further adjusting lever 30, the end 32 of which is remote from the adjusting lever 22 is connected in an articulated manner to the headrest part 12.
  • FIG. 2 shows the support device according to FIG. 1 in a position in which the support parts 6, 8 and 10, 12 are pivoted relative to the central support part 4.
  • Furniture drives according to the invention are provided for pivoting the support parts 6, 8 and 10, 12 relative to the central support part 4 and are accommodated in a common housing 34 below the support device 2.
  • the furniture drives arranged in the housing 34 are carried by the shafts 20, 24, which in turn are rotatably mounted on the frame of the support device 2, not shown in the drawing.
  • the housing 34 can, for example, also be mounted on the frame of the support device 2, not shown in the drawing. be consolidated.
  • FIG. 3 shows a highly schematic partial view of an exemplary embodiment of a furniture drive 36 according to the invention for adjusting parts of a piece of furniture relative to one another, the basic body of which is formed by the housing 34 in this exemplary embodiment.
  • the furniture drive 36 has two drive units 35, 35 'accommodated in the housing 34, of which only the drive unit 35 can be seen in FIG. 3.
  • the drive unit 35 has an adjusting element 38 designed as a shaft holder, which is mounted on the housing 34 so as to be pivotable about a pivot axis 40.
  • the adjustment element 38 is positively connected to the shaft 20 to form a rotationally fixed connection (cf. FIG. 1).
  • the shaft 20 has a non-circular cross section in the form of a square and engages in a form-fitting manner in a recess 42 of the adjusting element 38, which is essentially complementary to the cross section of the shaft 20 and is open to the side in the radial direction of the shaft 20.
  • the shaft 20 is held frictionally in the recess 42 in the mounting position of the furniture drive 36.
  • the drive unit 35 also has a drive element which can be moved back and forth in the direction of a double arrow 43 and, in this exemplary embodiment, is by an adjusting spindle 44 which can be moved in the axial direction and is secured against rotation and on which a spindle nut 46 which can be driven in rotation is arranged.
  • An electric motor 48 is provided as a rotary drive for the spindle nut 46, which is connected to the spindle nut 46 via a gear 50 in a rotary drive connection.
  • a slide 52 which is guided on an inner wall 54 of the housing 34, is connected to the adjusting spindle 44 in a manner fixed against displacement and against rotation.
  • a lever gear 56 is arranged in the drive train between the adjusting spindle 44 and the adjusting element 38, which has a first lever 58, one end 60 of which is articulated eccentrically to the pivot axis 40 on the adjusting element 38 and the other end 62 of which on the spindle nut 46 facing surface of the slide 52 is applied and loosely acted upon by this.
  • the lever gear 56 also has a second lever 64, one end 66 of which is articulated on the adjusting element 38 eccentrically to the pivot axis 40.
  • the ends 60, 66 of the levers 58, 64 are articulated on the adjusting element 38 at locations diametrically opposite to the pivot axis 40.
  • the lever gear 56 also has a third lever 68, which in this exemplary embodiment is designed as a two-armed lever and can be pivoted about an axis 70 parallel to the pivot axis 40 of the adjusting element 38 on an inner wall of the
  • Housing 34 is mounted.
  • a lever arm 72 of the third lever 68 is articulated on the end 62 of the first lever 58 facing away from the adjusting element 38, while its other lever arm 74 is articulated on the end 76 of the second lever 64 facing away from the adjusting element 38.
  • the third lever 68 forms coupling means which transmit a movement of the first lever 58 to the second lever 64, so that movements of the levers 58, 64 are coupled to one another, the levers 58, 64 moving in opposite directions.
  • the first lever 58 and the second lever 64 have the same length.
  • the ends of the levers 58, 64 are hinged to the third lever 68 at the same distance from the pivot axis 70.
  • the third lever 68 consists of two flat lever parts spaced apart in the axial direction of the pivot axis 70, so that the lever arms 72, 74 are designed as forks, between which the levers 58, 64 are included.
  • the mode of operation of the furniture drive 36 according to the invention is as follows:
  • the shaft 20 In the assembly position of the furniture drive 36, the shaft 20 is received in a form-fitting manner in the receptacle 42 of the adjusting element 38, as can be seen from FIG. 3.
  • the electric motor 48 drives the spindle nut 6 in such a way that the adjusting spindle 44 with the slide 52 in FIG. 3 moves to the left 3, so that the first lever 58 also moves to the left in FIG. 3 and thereby pivots the third lever 68 in FIG. 3 clockwise, so that the second lever 64 in FIG. 3 simultaneously moves to the right.
  • the first lever 58 presses the adjusting element 38 under pressure
  • the second lever 64 presses the adjusting element 38 so that it pivots clockwise in FIG. 3. Because of this, the shaft 20 also pivots clockwise, so that the leg support part 6 together with the calf support part 8 is pivoted into the adjustment position shown in FIG. 2.
  • a return from the adjustment position shown in FIG. 2 to the starting position shown in FIG. 1 takes place under the weight of the leg support part 6 and the calf support part 8 and a person who may be resting on the support device, the furniture drive 36 being switched on.
  • the fact that the lever mechanism 56 acts on the adjusting element 38 at points spaced apart from one another in the circumferential direction of the pivot axis 40 and diametrically opposite with respect to the pivot axis 40 ensures a uniform introduction of force into the adjusting element 38. Tensions or twists of the adjusting element 38 resulting from an uneven introduction of force are thus reliably avoided.
  • the assembly of the furniture drive 36 on the support device 2 is simplified, since the adjusting element 38 can be freely rotated between the starting position and the adjusting position when the slider 52 is in its position 3 is in the starting position.
  • FIGS. 4 and 5 show the drive unit 35, which is shown in FIG. 3 in a first end position of the adjustment movement, in further adjustment positions, the adjustment position shown in FIG. 5 being a second end position of the adjustment movement.
  • a comparison of FIGS. 3 and 5 shows that the shaft 20 can be pivoted through 90 ° by means of the drive unit 35.
  • maximum pivoting angles of less than 90 ° or more than 90 ° can also be achieved.
  • FIG. 6 shows that in addition to the drive unit 35, a further drive unit 35 'is accommodated in the housing 34, so that the furniture drive 36 according to the invention is designed as a double drive in this exemplary embodiment.
  • the furniture drive according to the invention can in principle also be constructed as a single drive.
  • the drive unit 35 ' is in a corresponding to the drive unit 35 Built up way; its components are provided with reference numerals which correspond to the reference numerals of the components of the drive unit 35.

Abstract

A furniture drive for displacing components of a piece of furniture is provided. An adjustment element is pivotably mounted on a main body and serves for displacing a component of a piece of furniture. A drive element is drivingly connected with the adjustment element for displacing the same. A lever gear mechanism is disposed between the drive element and the adjustment element for effecting the driving connection therebetween.

Description

Möbelantrieb zum Verstellen von Teilen eines Möbels relativ zueinander Furniture drive for adjusting parts of a piece of furniture relative to one another
Die Erfindung betrifft einen Mόbelantrieb der im Oberbegriff des Anspruchs 1 genannten Art zum Verstellen von Teilen eines Möbels relativ zueinander.The invention relates to a furniture drive of the type mentioned in the preamble of claim 1 for adjusting parts of a piece of furniture relative to one another.
Beispielsweise sind durch EP 0 372 032 Bl, DE 38 42 078 C2 und EP 0 583 660 Bl Möbelantriebe bekannt, die zum Verstellen von Teilen von Lattenrosten dienen.For example, from EP 0 372 032 B1, DE 38 42 078 C2 and EP 0 583 660 B1 furniture drives are known which are used to adjust parts of slatted frames.
Durch DE 100 17 978 AI ist ein Möbelantrieb der betreffenden Art bekannt, der einen Grundkörper in Form eines Gehäuses aufweist, an dem schwenkbar ein Ver- Stellelement zum Verstellen eines Teils des Möbels gelagert ist . Der bekannte Möbelantrieb weist ferner ein Antriebselement auf, das mit dem Verstellelement zum Verstellen desselben in Antriebsverbindung steht.From DE 100 17 978 AI a furniture drive of the type in question is known, which has a base body in the form of a housing, on which an adjusting element is pivotably mounted for adjusting a part of the furniture. The known furniture drive also has a drive element which is in drive connection with the adjusting element for adjusting the same.
Der Erfindung liegt die Aufgabe zugrunde, einen Möbelantrieb der im Oberbegriff des Anspruchs 1 genannten Art anzugeben, der einfach und kostengünstig herstellbar ist, der robust im Aufbau und zum Aufbringen großer Kräfte geeignet ist.The invention has for its object to provide a furniture drive of the type mentioned in the preamble of claim 1, which is simple and inexpensive to manufacture, which is robust in construction and suitable for applying large forces.
Diese Aufgabe wird durch die im Anspruch 1 angege- bene Lehre gelöst.This object is achieved by the teaching specified in claim 1.
Erfindungsgemäß ist in dem Antriebsstrang zwischen dem Antriebselement und dem Verstellelement ein Hebel- getriebe angeordnet. Durch die Verwendung eines Hebel- getriebes ist der erfindungsgemäße Möbelantrieb einfach und kostengünstig herstellbar, robust im Aufbau und zum Aufbringen großer Kräfte geeignet . Eine außerordentlich vorteilhafte Weiterbildung der Lehre des Anspruchs 1 sieht vor, daß das Antriebselement oder ein mit diesem verbundenes Zwischenteil einen Hebel des Hebelgetriebes lose beaufschlagt . Bei dieser Ausführungsform erfolgt die Verstellung des Verstellelements aus einer Ausgangslage in eine Verstella- ge dadurch, daß das Antriebselement oder das Zwischenteil einen Hebel des Hebelgetriebes mit einer Verstell- kraft beaufschlagt. Eine Rückstellung des Verstell- elementes aus der Verstellage zurück in die Ausgangslage erfolgt unter der Gewichtskraft eines mit dem Verstellelement verstellten Teiles eines Möbels, beispielsweise eines Stützteiles eines Lattenrostes. Dadurch, daß der Hebel des Hebelgetriebes von dem An- triebselement oder dem Zwischenteil lose beaufschlagt wird, ist das Verstellelement mit dem Hebelgetriebe bei ausgeschaltetem Antrieb frei von der Ausgangslage in die Verstellage bewegbar, so daß beispielsweise der Einbau des Antriebs in ein Möbel, beispielsweise einen Lattenrost, vereinfacht ist.According to the invention, a lever mechanism is arranged in the drive train between the drive element and the adjusting element. By using a lever mechanism, the furniture drive according to the invention is simple and inexpensive to manufacture, robust in construction and suitable for applying large forces. An extremely advantageous development of the teaching of claim 1 provides that the drive element or an intermediate part connected thereto loosely acts on a lever of the lever mechanism. In this embodiment, the adjustment element is adjusted from an initial position to an adjustment position in that the drive element or the intermediate part acts on an lever of the lever mechanism with an adjustment force. The adjustment element is reset from the adjustment position back to the starting position under the weight of a part of a piece of furniture adjusted with the adjustment element, for example a support part of a slatted frame. Characterized in that the lever of the lever gear is loosely acted upon by the drive element or the intermediate part, the adjusting element with the lever gear can be moved freely from the starting position into the adjusting position when the drive is switched off, so that, for example, the installation of the drive in a piece of furniture, for example a piece of furniture Slatted frame, is simplified.
Eine vorteilhafte Weiterbildung der vorgenannten Ausführungsform sieht vor, daß das Zwischenteil ein Schieber ist, der mit einem beim Verstellen des Verstellelementes auf Druck beanspruchbaren Hebel des He- belgetriebes in Wirkungsverbindung steht. Diese Ausführungsform ist besonders einfach und kostengünstig herstellbar. Der Schieber kann bei dieser Ausführungsform auf beliebige geeignete Weise ausgebildet, beispielsweise durch eine Spindelmutter oder ein mit einer Stellspindel verbundenes Teil gebildet sein.An advantageous further development of the aforementioned embodiment provides that the intermediate part is a slide which is operatively connected to a lever of the lifting mechanism which can be subjected to pressure when the adjusting element is adjusted. This embodiment is particularly simple and inexpensive to manufacture. In this embodiment, the slider can be designed in any suitable manner, for example formed by a spindle nut or a part connected to an adjusting spindle.
Eine andere außerordentlich vorteilhafte Weiterbildung der erfindungsgemäßen Lehre sieht vor, daß das Hebelgetriebe an wenigstens zwei in Umfangsrichtung der Schwenkachse des Verstellelementes zueinander beabstan- deten Stellen an dem Verstellelement angreift. Auf diese Weise ist bezogen auf die Schwenkachse des Verstellelementes eine in Umfangsrichtung gleichmäßige Einleitung der von dem Hebelgetriebe ausgeübten Kraft in das Verstellelement erzielt. Verspannungen und Verwindungen des Verstellelementes sind somit zuverlässig vermieden. Eine besonders gleichmäßige Krafteinleitung ergibt sich dadurch, daß das Hebelgetriebe an wenigstens zwei bezogen auf die Schwenkachse diametral gegenüberliegen- den Stellen an dem Verstellelement angreift, wie dies eine Weiterbildung der vorgenannten Ausführungsform vorsieht .Another extraordinarily advantageous development of the teaching according to the invention provides that the lever mechanism is spaced apart from one another on at least two in the circumferential direction of the pivot axis of the adjusting element. deten places on the adjusting element attacks. In this way, based on the pivot axis of the adjusting element, a uniform introduction of the force exerted by the lever mechanism into the adjusting element is achieved in the circumferential direction. Tension and twisting of the adjustment element are thus reliably avoided. A particularly uniform introduction of force results from the fact that the lever mechanism acts on the adjusting element at at least two points diametrically opposite one another with respect to the pivot axis, as is provided by a development of the aforementioned embodiment.
Der Aufbau des Hebelgetriebes ist entsprechend den jeweiligen Anforderungen in weiten Grenzen wählbar, wobei beispielsweise einarmige Hebel, zweiarmige Hebel oder Winkelhebel oder andere Hebel verwendet werden können. Darüber hinaus sind die Zahl der Hebel und deren Längenverhältnisse in weiten Grenzen wählbar, um ein gewünschtes Untersetzungsverhältnis einzustellen. In der konstruktiv einfachsten und damit am kostengünstigsten herstellbaren Ausführungsform weist das Hebelgetriebe einen ersten Hebel auf, dessen eines Ende an dem Verstellelement angelenkt ist und der mit dem Antriebselement in Kraftübertragungsverbindung steht . Eine andere Weiterbildung der erfindungsgemäßen Lehre sieht vor, daß das Hebelgetriebe einen zweiten Hebel aufweist, der an dem Verstellelement angelenkt ist, wobei zum Verstellen des Verstellelementes einer der Hebel das Verstellelement auf Zug beansprucht und der andere Hebel das Verstellelement auf Druck beansprucht . Diese Ausführungsform ist einfach und damit kostengünstig herstellbar.The structure of the lever mechanism can be selected within wide limits in accordance with the respective requirements, it being possible, for example, to use single-arm levers, two-arm levers or angle levers or other levers. In addition, the number of levers and their length ratios can be selected within wide limits in order to set a desired reduction ratio. In the structurally simplest and therefore the least costly embodiment, the lever mechanism has a first lever, one end of which is articulated on the adjusting element and which is in power transmission connection with the drive element. Another development of the teaching according to the invention provides that the lever mechanism has a second lever which is articulated on the adjusting element, one of the levers stressing the adjusting element in tension and the other lever stressing the adjusting element in compression for adjusting the adjusting element. This embodiment is simple and therefore inexpensive to manufacture.
Eine zweckmäßige Weiterbildung der vorgenannten Ausführungsform sieht vor, daß der erste Hebel und der zweite Hebel durch Kopplungsmittel aneinander gekoppelt sind. Durch die Kopplungsmittel ist sichergestellt, daß die beiden Hebel die zum Verstellen des Verstellelementes erforderlichen Bewegungen in einer aufeinander ab- gestimmten Weise ausführen.An expedient development of the aforementioned embodiment provides that the first lever and the second levers are coupled to one another by coupling means. The coupling means ensures that the two levers perform the movements required for adjusting the adjusting element in a coordinated manner.
Die Kopplungsmittel können in beliebiger geeigneter Weise ausgebildet sein. Eine besonders einfache und damit kostengünstig herstellbare Weiterbildung der Ausführungsform mit den Kopplungsmitteln sieht vor, daß die Kopplungsmittel einen dritten Hebel aufweisen.The coupling means can be designed in any suitable manner. A particularly simple and therefore inexpensive to develop the embodiment with the coupling means provides that the coupling means have a third lever.
Bei der vorgenannten Ausführungsform ist der dritte Hebel zweckmäßigerweise ein zweiarmiger Hebel, dessen einer Hebelarm an dem ersten Hebel und dessen anderer Hebelarm an dem zweiten Hebel angelenkt ist . Diese Ausführungsform ist besonders einfach im Aufbau und damit besonders kostengünstig herstellbar. Darüber hinaus ist sie besonders robust.In the aforementioned embodiment, the third lever is expediently a two-armed lever, one lever arm of which is articulated on the first lever and the other lever arm of which is articulated on the second lever. This embodiment is particularly simple in construction and thus particularly inexpensive to manufacture. In addition, it is particularly robust.
Das Antriebselement des erfindungsgemäßen Möbel- antriebs ist zweckmäßigerweise ein linear bewegliches Antriebselement.The drive element of the furniture drive according to the invention is expediently a linearly movable drive element.
Eine Weiterbildung der vorgenannten Ausführungsform sieht vor, daß das linear bewegliche Antriebselement eine verdrehsicher und in Axialrichtung beweglich auf einer drehantreibbaren Stellspindel gehaltene Spin- delmutter ist. Derartige Spindeltriebe stehen als einfache und kostengünstige Standardbauteile zur Verfügung und sind zum Aufbringen großer Kräfte geeignet.A further development of the aforementioned embodiment provides that the linearly movable drive element is a spindle nut which is secured against rotation and is movable in the axial direction on an adjusting spindle which can be driven in rotation. Such spindle drives are available as simple and inexpensive standard components and are suitable for applying large forces.
In kinematischer Umkehrung der vorgenannten Ausführungsform kann das linear bewegliche Antriebselement jedoch auch eine in Axialrichtung bewegliche, verdrehsicher geführte Stellspindel sein, auf der eine dreh- antreibbare Spindelmutter angeordnet ist.In a kinematic reversal of the above-mentioned embodiment, the linearly movable drive element can, however, also be an adjusting spindle which is movable in the axial direction and guided against rotation, on which a spindle nut which can be driven in rotation is arranged.
Eine andere außerordentlich vorteilhafte Weiterbildung der erfindungsgemäßen Lehre sieht vor, daß das Verstellelement drehfest mit einer drehbar gelagerten Welle verbindbar ist, die in Montageposition des Möbel- antriebs mit einem Teil des Möbels zum Verstellen desselben in Wirkungsverbindung steht. Diese Ausführungs- form ist einfach im Aufbau und besonders robust, so daß sich mit dem erfindungsgemäßen Möbelantrieb gemäß dieser Ausführungsform besonders große Kräfte aufbringen lassen. Darüber hinaus ist die Montage des Möbel- antriebs an einem Möbel vereinfacht . Eine Weiterbildung der vorgenannten Ausführungs- form sieht vor, daß das Verstellelement zur Bildung einer drehfesten Verbindung formschlüssig mit der Welle verbindbar ist. Diese Ausführungsform ist ebenfalls besonders robust und zur Übertragung besonders großer Kräfte geeignet.Another extremely advantageous development of the teaching according to the invention provides that the Adjustment element can be connected in a rotationally fixed manner to a rotatably mounted shaft which, in the assembly position of the furniture drive, is operatively connected to part of the furniture for adjusting the same. This embodiment is simple in construction and particularly robust, so that particularly large forces can be applied with the furniture drive according to the invention in accordance with this embodiment. In addition, the assembly of the furniture drive on a piece of furniture is simplified. A further development of the aforementioned embodiment provides that the adjusting element can be positively connected to the shaft to form a rotationally fixed connection. This embodiment is also particularly robust and suitable for transmitting particularly large forces.
Eine andere Weiterbildung sieht vor, daß die Wellen einen unrunden Querschnitt aufweist und in Montageposition des Möbelantriebs formschlüssig in eine Ausnehmung des Verstellelementes eingreift, die zum Quer- schnitt der Welle im wesentlichen komplementär geformt ist . Diese Ausführungsform ist besonders einfach im Aufbau und damit besonders kostengünstig herstellbar. Darüber hinaus ist sie besonders robust und erleichtert die Montage des Möbelantriebs an dem Möbel . Gemäß einer Weiterbildung der vorgenannten Aus- führungsform ist die Ausnehmung des Schwenkhebels in Radialrichtung der Welle offen ausgebildet. Dies erleichtert bei der Montage des erfindungsgemäßen Möbel- antriebs das Einsetzen der Welle in die Ausnehmung. Bei der vorgenannten Ausführungsform können erforderlichenfalls Verriegelungsmittel zum Verriegeln der Welle in der Ausnehmung vorgesehen sein. Durch die Verriegelungsmittel ist verhindert, daß sich die Welle während der Verstellbewegung aus der Ausnehmung löst . Eine mit einem erfindungsgemäßen Möbelantrieb versehene motorisch verstellbare Stützeinrichtung für eine Polsterung eines Sitz- und/oder Liegemöbels, beispielsweise eine Matratze eines Bettes, ist im Anspruch 19 angegeben. Der Anspruch 20 gibt eine Weiterbildung der erfindungsgemäßen Stützeinrichtung an. Ein mit einer erfindungsgemäßen Stützeinrichtung versehenes Sitz- und/oder Liegemöbel ist im Anspruch 21 angegeben.Another development provides that the shafts have a non-circular cross-section and in the assembly position of the furniture drive engages in a form-fitting manner in a recess of the adjusting element which is essentially complementary to the cross-section of the shaft. This embodiment is particularly simple in construction and thus particularly inexpensive to manufacture. In addition, it is particularly robust and facilitates the assembly of the furniture drive on the furniture. According to a development of the aforementioned embodiment, the recess of the pivot lever is designed to be open in the radial direction of the shaft. This facilitates the insertion of the shaft into the recess when assembling the furniture drive according to the invention. In the aforementioned embodiment, locking means can be provided for locking the shaft in the recess if necessary. The locking means prevents the shaft from coming loose from the recess during the adjustment movement. A motor-driven support device provided with a furniture drive according to the invention for upholstering seating and / or reclining furniture, for example a mattress of a bed, is specified in claim 19. Claim 20 specifies a development of the support device according to the invention. A seating and / or reclining furniture provided with a support device according to the invention is specified in claim 21.
Die Erfindung wird nachfolgend anhand der beige- fügten Zeichnung näher erläutert, in der ein Ausführungsbeispiel eines erfindungsgemäßen Möbelantriebs dargestellt ist.The invention is explained in more detail below with reference to the attached drawing, in which an embodiment of a furniture drive according to the invention is shown.
Es zeigt : Fig. 1 in schematischer Seitenansicht ein Ausführungsbeispiel einer erfindungsgemäßen Stützeinrichtung in Form eines Lattenrostes, wobei die Stützteile der Stützeinrichtung relativ zueinander nicht verstellt sind,1 shows a schematic side view of an embodiment of a support device according to the invention in the form of a slatted frame, the support parts of the support device not being adjusted relative to one another,
Fig. 2 in gleicher Darstellung wie Fig. 1 dieFig. 2 in the same representation as Fig. 1
Stützeinrichtung gemäß Fig. 1, wobei die Stützteile der Stützeinrichtung relativ zueinander verstellt sind und Fig. 3 in stark schematischer Seitenansicht einen Teil eines Ausführungsbeispieles eines als Doppelantrieb ausgebildeten erfindungsgemäßen Möbelantriebs in einer ersten Verstellage, wobei zur Ver- anschaulichung eine Hälfte des Gehäuses weggelassen ist, Fig. 4 in gleicher Darstellung wie Fig. 3, jedoch in kleinerem Maßstab den Möbelantrieb gemäß Fig. 3 in einer zweiten Ver- Stellage, Fig. 5 in gleicher Darstellung wie Fig. 4 den1, the support parts of the support device being adjusted relative to one another and FIG. 3 in a highly schematic side view of part of an exemplary embodiment of a furniture drive according to the invention designed as a double drive in a first adjustment position, one half of the housing being omitted for illustration, 4 in the same representation as FIG. 3, but on a smaller scale, the furniture drive according to FIG. 3 in a second version Position, Fig. 5 in the same representation as Fig. 4 the
Möbelantrieb gemäß Fig. 3 in einer dritten Verstellage und Fig. 6 in gegenüber Fig. 3 kleinerem Maßstab den Möbelantrieb gemäß Fig.3, wobei aus Gründen der Veranschaulichung eine Hälfte des Gehäuses weggelassen ist und wobei beide Antriebseinheiten des Doppel- antriebs dargestellt sind.3 in a third adjustment position and FIG. 6 on a smaller scale compared to FIG. 3 the furniture drive according to FIG. 3, with half of the housing being omitted for the sake of illustration and both drive units of the double drive being shown.
In Fig. 1 ist ein Ausführungsbeispiel einer erfindungsgemäßen Stützeinrichtung 2 in Form eines Lattenrostes zum Abstützen einer in der Zeichnung nicht dar- gestellten Polsterung eines Sitz- und/oder Liegemöbels, beispielsweise einer Matratze eines Bettes, dargestellt. Die Stützeinrichtung 2 weist mehrere relativ zueinander um zueinander parallele horizontale Schwenkachsen verschwenkbare Stützteile auf und dient zum Ab- stützen der in der Zeichnung nicht dargestellten Polsterung des Sitz- und/oder Liegemöbels.1 shows an embodiment of a support device 2 according to the invention in the form of a slatted frame for supporting an upholstery of a seating and / or reclining furniture (not shown in the drawing), for example a mattress of a bed. The support device 2 has a plurality of support parts which can be pivoted relative to one another about parallel horizontal pivot axes and serves to support the upholstery of the seating and / or reclining furniture (not shown in the drawing).
Im einzelnen weist die Stützeinrichtung 2 ein mittleres Stützteil 4 auf, das an einer Seite gelenkig und um eine horizontale Schwenkachse verschwenkbar mit einem Beinstützteil 6 verbunden ist, das an seiner dem mittleren Stützteil 4 abgewandten Seite gelenkig und um eine horizontale Schwenkachse verschwenkbar mit einem Wadenstützteil 8 verbunden ist.Specifically, the support device 2 has a central support part 4, which is articulated on one side and pivotable about a horizontal pivot axis with a leg support part 6, which is articulated on its side facing away from the central support part 4 and pivotable about a horizontal pivot axis with a calf support part 8 connected is.
Das mittlere Stützteil 4 ist auf seiner dem Bein- stützteil 6 abgewandten Seite gelenkig und um eine horizontale Schwenkachse verschwenkbar mit einem Oberkörperstützteil 10 verbunden, das auf seiner dem mittleren Stützteil 4 abgewandten Seite gelenkig und um eine horizontale Schwenkachse verschwenkbar mit einem Kopf- stützteil 12 verbunden ist.The middle support part 4 is articulated on its side facing away from the leg support part 6 and pivotable about a horizontal pivot axis with an upper body support part 10, which is articulated on its side facing away from the center support part 4 and pivotable about a horizontal pivot axis with a head support part 12 is connected.
Zum Verschwenken des Beinstützteiles 6 und des Wadenstutzteiles 8 relativ zu dem mittleren Stützteil 4 ist ein Verstellhebel 14 vorgesehen, dessen eines Ende 16 an dem Wadenstützteil 8 angelenkt ist und dessen anderes Ende 18 drehfest mit einer um eine horizontale Drehachse an einem in der Zeichnung nicht dargestellten Rahmen der Stützeinrichtung 2 drehbar gelagerten Welle 20 in Form einer Vierkantwelle verbunden ist. Zum Verschwenken des Oberkörperstützteiles 10 und des Kopfstützteiles 12 relativ zu dem mittleren Stützteil 4 ist ein weiterer Verstellhebel 22 vorgesehen, dessen eines Ende 23 drehfest mit einer um eine horizontale Drehachse an dem in der Zeichnung nicht dar- gestellten Rahmen der Stützeinrichtung 2 drehbar gelagerten Welle 24 in Form einer Vierkantwelle verbunden ist und dessen anderes Ende 26 mit einem Ende 28 eines weiteren Verstellhebels 30 verbunden ist, dessen dem Verstellhebel 22 abgewandtes Ende 32 gelenkig mit dem Kopfstützteil 12 verbunden ist.For pivoting the leg support part 6 and the calf support part 8 relative to the central support part 4, an adjusting lever 14 is provided, one end 16 of which is articulated on the calf support part 8 and the other end 18 of which is rotatably connected to one not shown in the drawing about a horizontal axis of rotation Frame of the support device 2 rotatably mounted shaft 20 is connected in the form of a square shaft. To pivot the upper body support part 10 and the head support part 12 relative to the central support part 4, a further adjustment lever 22 is provided, one end 23 of which is rotatably mounted with a shaft 24 which is rotatably mounted about a horizontal axis of rotation on the frame of the support device 2 which is not shown in the drawing is connected in the form of a square shaft and the other end 26 is connected to an end 28 of a further adjusting lever 30, the end 32 of which is remote from the adjusting lever 22 is connected in an articulated manner to the headrest part 12.
Fig. 2 zeigt die Stützeinrichtung gemäß Fig. 1 in einer Position, in der die Stützteile 6, 8 und 10, 12 relativ zu dem mittleren Stützteil 4 verschwenkt sind. Zum Verschwenken der Stützteile 6, 8 und 10, 12 relativ zu dem mittleren Stützteil 4 sind erfindungsgemäße Möbelantriebe vorgesehen, die in einem gemeinsamen Gehäuse 34 unterhalb der Stützeinrichtung 2 aufgenommen sind. Bei dem Ausführungsbeispiel gemäß Fig. 1 werden die in dem Gehäuse 34 angeordneten Möbelantriebe von den Wellen 20, 24 getragen, die ihrerseits drehbar an dem in der Zeichnung nicht dargestellten Rahmen der Stützeinrichtung 2 gelagert sind. Das Gehäuse 34 kann jedoch beispielsweise auch an dem in der Zeichnung nicht dargestellten Rahmen der Stützeinrichtung 2 be- festigt sein.FIG. 2 shows the support device according to FIG. 1 in a position in which the support parts 6, 8 and 10, 12 are pivoted relative to the central support part 4. Furniture drives according to the invention are provided for pivoting the support parts 6, 8 and 10, 12 relative to the central support part 4 and are accommodated in a common housing 34 below the support device 2. In the embodiment according to FIG. 1, the furniture drives arranged in the housing 34 are carried by the shafts 20, 24, which in turn are rotatably mounted on the frame of the support device 2, not shown in the drawing. However, the housing 34 can, for example, also be mounted on the frame of the support device 2, not shown in the drawing. be consolidated.
In Fig. 3 ist stark schematisiert eine Teilansicht eines Ausführungsbeispiels eines erfindungsgemäßen Möbelantriebs 36 zum Verstellen von Teilen eines Möbels relativ zueinander dargestellt, dessen Grundkörper bei diesem Ausführungsbeispiel durch das Gehäuse 34 gebildet ist. Der Möbelantrieb 36 weist zwei in dem Gehäuse 34 aufgenommene Antriebseinheiten 35, 35' auf, von denen in Fig. 3 lediglich die Antriebseinheit 35 erkenn- bar ist. Die Antriebseinheit 35 weist ein als Wellenaufnahme ausgebildetes Verstellelement 38 auf, das um eine Schwenkachse 40 schwenkbar an dem Gehäuse 34 gelagert ist. Das Verstellelement 38 ist zur Bildung einer drehfesten Verbindung formschlüssig mit der Welle 20 verbunden (vgl. Fig. 1). Hierzu weist die Welle 20 einen unrunden Querschnitt im Form eines Vierkants auf und greift formschlüssig in eine Ausnehmung 42 des Verstellelementes 38 ein, die zum Querschnitt der Welle 20 im wesentlichen komplementär geformt und in Radialrich- tung der Welle 20 zur Seite offen ausgebildet ist. Die Welle 20 ist in Montageposition des Möbelantriebs 36 reibschlüssig in der Ausnehmung 42 gehalten.3 shows a highly schematic partial view of an exemplary embodiment of a furniture drive 36 according to the invention for adjusting parts of a piece of furniture relative to one another, the basic body of which is formed by the housing 34 in this exemplary embodiment. The furniture drive 36 has two drive units 35, 35 'accommodated in the housing 34, of which only the drive unit 35 can be seen in FIG. 3. The drive unit 35 has an adjusting element 38 designed as a shaft holder, which is mounted on the housing 34 so as to be pivotable about a pivot axis 40. The adjustment element 38 is positively connected to the shaft 20 to form a rotationally fixed connection (cf. FIG. 1). For this purpose, the shaft 20 has a non-circular cross section in the form of a square and engages in a form-fitting manner in a recess 42 of the adjusting element 38, which is essentially complementary to the cross section of the shaft 20 and is open to the side in the radial direction of the shaft 20. The shaft 20 is held frictionally in the recess 42 in the mounting position of the furniture drive 36.
Die Antriebseinheit 35 weist ferner ein in Richtung eines Doppelpfeiles 43 hin- und herbewegliches An- triebselement auf, das bei diesem Ausführungsbeispiel durch eine in Axialrichtung bewegliche, verdrehsicher geführte Stellspindel 44 ist, auf der eine drehantreib- bare Spindelmutter 46 angeordnet ist. Als Drehantrieb für die Spindelmutter 46 ist ein Elektromotor 48 vor- gesehen, der mit der Spindelmutter 46 über ein Getriebe 50 in Drehantriebsverbindung steht. Mit der Stellspindel 44 ist verschiebefest und verdrehsicher ein Schieber 52 verbunden, der an einer Innenwandung 54 des Gehäuses 34 geführt ist. Erfindungsgemäß ist in dem Antriebsstrang zwischen der Stellspindel 44 und dem Verstellelement 38 ein Hebelgetriebe 56 angeordnet, das einen ersten Hebel 58 aufweist, dessen eines Ende 60 exzentrisch zu der Schwenkachse 40 an dem Verstellelement 38 angelenkt ist und dessen anderes Ende 62 an der der Spindelmutter 46 abgewandten Fläche des Schiebers 52 anliegt und lose von diesem beaufschlagt wird. Das Hebelgetriebe 56 weist bei diesem Ausführungsbeispiel ferner einen zwei- ten Hebel 64 auf, dessen eines Ende 66 exzentrisch zu der Schwenkachse 40 an dem Verstellelement 38 angelenkt ist. Wie aus Fig. 3 ersichtlich ist, sind bei diesem Ausführungsbeispiel die Enden 60, 66 der Hebel 58, 64 an zur Schwenkachse 40 diametral gegenüberliegenden Stellen an dem Verstellelement 38 angelenkt.The drive unit 35 also has a drive element which can be moved back and forth in the direction of a double arrow 43 and, in this exemplary embodiment, is by an adjusting spindle 44 which can be moved in the axial direction and is secured against rotation and on which a spindle nut 46 which can be driven in rotation is arranged. An electric motor 48 is provided as a rotary drive for the spindle nut 46, which is connected to the spindle nut 46 via a gear 50 in a rotary drive connection. A slide 52, which is guided on an inner wall 54 of the housing 34, is connected to the adjusting spindle 44 in a manner fixed against displacement and against rotation. According to the invention, a lever gear 56 is arranged in the drive train between the adjusting spindle 44 and the adjusting element 38, which has a first lever 58, one end 60 of which is articulated eccentrically to the pivot axis 40 on the adjusting element 38 and the other end 62 of which on the spindle nut 46 facing surface of the slide 52 is applied and loosely acted upon by this. In this exemplary embodiment, the lever gear 56 also has a second lever 64, one end 66 of which is articulated on the adjusting element 38 eccentrically to the pivot axis 40. As can be seen from FIG. 3, in this exemplary embodiment the ends 60, 66 of the levers 58, 64 are articulated on the adjusting element 38 at locations diametrically opposite to the pivot axis 40.
Das Hebelgetriebe 56 weist ferner einen dritten Hebel 68 auf, der bei diesem Ausführungsbeispiel als zweiarmiger Hebel ausgebildet ist und um eine zu der Schwenkachse 40 des Verstellelementes 38 parallele Schwenkachse 70 schwenkbar an einer Innenwandung desThe lever gear 56 also has a third lever 68, which in this exemplary embodiment is designed as a two-armed lever and can be pivoted about an axis 70 parallel to the pivot axis 40 of the adjusting element 38 on an inner wall of the
Gehäuses 34 gelagert ist. Ein Hebelarm 72 des dritten Hebels 68 ist an dem dem Verstellelement 38 abgewandten Ende 62 des ersten Hebels 58 angelenkt, während sein anderer Hebelarm 74 an dem dem Verstellelement 38 abge- wandten Ende 76 des zweiten Hebels 64 angelenkt ist. Der dritte Hebel 68 bildet Kopplungsmittel, die eine Bewegung des ersten Hebels 58 auf den zweiten Hebel 64 übertragen, so daß Bewegungen der Hebel 58, 64 aneinander gekoppelt sind, wobei sich die Hebel 58, 64 ge- genläufig bewegen. Wie aus der Zeichnung ersichtlich, haben der erste Hebel 58 und der zweite Hebel 64 die gleiche Länge. Ferner sind die Enden der Hebel 58, 64 im gleichen Abstand zu der Schwenkachse 70 des dritten Hebels 68 an diesem angelenkt. Aus der Zeichnung ist nicht ersichtlich und deshalb wird hier erläutert, daß der dritte Hebel 68 aus zwei flachen, in Achsrichtung der Schwenkachse 70 zueinander beabstandeten Hebelteilen besteht, so daß die Hebelarme 72, 74 als Gabeln ausgebildet sind, zwischen denen die Hebel 58, 64 aufgenommen sind.Housing 34 is mounted. A lever arm 72 of the third lever 68 is articulated on the end 62 of the first lever 58 facing away from the adjusting element 38, while its other lever arm 74 is articulated on the end 76 of the second lever 64 facing away from the adjusting element 38. The third lever 68 forms coupling means which transmit a movement of the first lever 58 to the second lever 64, so that movements of the levers 58, 64 are coupled to one another, the levers 58, 64 moving in opposite directions. As can be seen from the drawing, the first lever 58 and the second lever 64 have the same length. Furthermore, the ends of the levers 58, 64 are hinged to the third lever 68 at the same distance from the pivot axis 70. It cannot be seen from the drawing and therefore it is explained here that the third lever 68 consists of two flat lever parts spaced apart in the axial direction of the pivot axis 70, so that the lever arms 72, 74 are designed as forks, between which the levers 58, 64 are included.
Die Funktionsweise des erfindungsgemäßen Möbel- antriebs 36 ist wie folgt:The mode of operation of the furniture drive 36 according to the invention is as follows:
In Montageposition des Möbelantriebs 36 ist die Welle 20 formschlüssig in der Aufnehmung 42 des Verstellelementes 38 aufgenommen, wie dies aus Fig. 3 ersichtlich ist. Zum Verschwenken der Welle 20 aus der in den Figuren 1 und 3 dargestellten Ausgangslage in eine in Fig. 2 dargestellte Verstellage treibt der Elektro- motor 48 die Spindelmutter 6 derart an, daß sich die Stellspindel 44 mit dem Schieber 52 in Fig. 3 nach links bewegt, so daß sich der erste Hebel 58 in Fig. 3 ebenfalls nach links bewegt und hierbei den dritten Hebel 68 in Fig. 3 im Uhrzeigersinn verschwenkt, so daß sich gleichzeitig der zweite Hebel 64 in Fig. 3 nach rechts bewegt. Hierbei beansprucht der erste Hebel 58 das Verstellelement 38 auf Druck, während der zweite Hebel 64 das Verstellelement 38 auf Zug beansprucht, so daß dieses in Fig. 3 im Uhrzeigersinn verschwenkt. Auf- grund dessen verschwenkt die Welle 20 ebenfalls im Uhrzeigersinn, so daß das Beinstützteil 6 zusammen mit dem Wadenstützteil 8 in die in Fig. 2 dargestellte Verstellage verschwenkt wird.In the assembly position of the furniture drive 36, the shaft 20 is received in a form-fitting manner in the receptacle 42 of the adjusting element 38, as can be seen from FIG. 3. To pivot the shaft 20 from the initial position shown in FIGS. 1 and 3 into an adjustment position shown in FIG. 2, the electric motor 48 drives the spindle nut 6 in such a way that the adjusting spindle 44 with the slide 52 in FIG. 3 moves to the left 3, so that the first lever 58 also moves to the left in FIG. 3 and thereby pivots the third lever 68 in FIG. 3 clockwise, so that the second lever 64 in FIG. 3 simultaneously moves to the right. Here, the first lever 58 presses the adjusting element 38 under pressure, while the second lever 64 presses the adjusting element 38 so that it pivots clockwise in FIG. 3. Because of this, the shaft 20 also pivots clockwise, so that the leg support part 6 together with the calf support part 8 is pivoted into the adjustment position shown in FIG. 2.
Eine Rückstellung aus der in Fig. 2 dargestellten Verstellage in die in Fig. 1 dargestellte Ausgangslage erfolgt unter der Gewichtskraft des Beinstützteiles 6 und des Wadenstutzteiles 8 und einer ggf. auf der Stützeinrichtung ruhenden Person, wobei der Möbelantrieb 36 eingeschaltet ist. Dadurch, daß das Hebelgetriebe 56 an in Umfangsrichtung der Schwenkachse 40 zueinander beabstandeten, bezogen auf die Schwenkachse 40 diametral gegenüberliegenden Stellen an dem Verstellelement 38 angreift, ist eine gleichmäßige Krafteinleitung in das Verstellelement 38 gewährleistet. Von einer ungleichmäßigen Krafteinleitung herrührende Spannungen oder Verwindungen des Verstellelementes 38 sind somit zuverlässig vermieden. Dadurch, daß der Schieber 52 den ersten Hebel 58 des Hebelgetriebes 56 lose beaufschlagt, ist die Montage des Möbelantriebs 36 an der Stützeinrichtung 2 vereinfacht, da sich das Verstellelement 38 zwischen der Ausgangslage und der Verstellage frei drehen läßt, wenn sich der Schieber 52 in seiner in Fig. 3 dargestellten Ausgangslage befindet.A return from the adjustment position shown in FIG. 2 to the starting position shown in FIG. 1 takes place under the weight of the leg support part 6 and the calf support part 8 and a person who may be resting on the support device, the furniture drive 36 being switched on. The fact that the lever mechanism 56 acts on the adjusting element 38 at points spaced apart from one another in the circumferential direction of the pivot axis 40 and diametrically opposite with respect to the pivot axis 40 ensures a uniform introduction of force into the adjusting element 38. Tensions or twists of the adjusting element 38 resulting from an uneven introduction of force are thus reliably avoided. Because the slider 52 loosely acts on the first lever 58 of the lever gear 56, the assembly of the furniture drive 36 on the support device 2 is simplified, since the adjusting element 38 can be freely rotated between the starting position and the adjusting position when the slider 52 is in its position 3 is in the starting position.
In den Figuren 4 und 5 ist die Antriebseinheit 35, die in Fig. 3 in einer ersten Endlage der Verstellbewegung dargestellt ist, in weiteren Verstellagen dargestellt, wobei die in Fig. 5 dargestellte Verstellage eine zweite Endlage der Verstellbewegung ist. Aus einem Vergleich der Figuren 3 und 5 ist ersichtlich, daß die Welle 20 mittels der Antriebseinheit 35 um 90° schwenkbar ist . Bei entsprechendem Aufbau des Verstellelementes 38 und des Hebelgetriebes 56 sind jedoch auch maxi- male Verschwenkwinkel von weniger als 90° oder von mehr als 90° erzielbar.FIGS. 4 and 5 show the drive unit 35, which is shown in FIG. 3 in a first end position of the adjustment movement, in further adjustment positions, the adjustment position shown in FIG. 5 being a second end position of the adjustment movement. A comparison of FIGS. 3 and 5 shows that the shaft 20 can be pivoted through 90 ° by means of the drive unit 35. With a corresponding construction of the adjusting element 38 and the lever gear 56, however, maximum pivoting angles of less than 90 ° or more than 90 ° can also be achieved.
Aus Fig. 6 ist ersichtlich, daß neben der Antriebseinheit 35 in dem Gehäuse 34 noch eine weitere Antriebseinheit 35' aufgenommen ist, so daß der erfin- dungsgemäße Möbelantrieb 36 bei diesem Ausführungsbei- spiel als Doppelantrieb ausgebildet ist. Der erfindungsgemäße Möbelantrieb kann jedoch grundsätzlich auch als Einzelantrieb aufgebaut sein. Die Antriebseinheit 35' ist in einer der Antriebseinheit 35 entsprechenden Weise aufgebaut; ihre Bauteile sind mit Bezugszeichen versehen, die den Bezugszeichen der Bauteile der Antriebseinheit 35 entsprechen. 6 shows that in addition to the drive unit 35, a further drive unit 35 'is accommodated in the housing 34, so that the furniture drive 36 according to the invention is designed as a double drive in this exemplary embodiment. However, the furniture drive according to the invention can in principle also be constructed as a single drive. The drive unit 35 'is in a corresponding to the drive unit 35 Built up way; its components are provided with reference numerals which correspond to the reference numerals of the components of the drive unit 35.

Claims

Patentansprüche claims
1. Möbelantrieb zum Verstellen von Teilen eines Möbels relativ zueinander,1. Furniture drive for adjusting parts of a piece of furniture relative to one another,
mit einem Grundkörper,with a basic body,
mit einem schwenkbar an dem Grundkörper gelagerten Verstellelement zum Verstellen eines Teils des Möbels undwith an adjusting element pivotably mounted on the base body for adjusting a part of the piece of furniture and
mit einem Antriebselement, das mit dem Verstellelement zum Verstellen desselben in Antriebs erbindung steht,with a drive element which is connected to the adjustment element for adjusting the same in drive,
dadurch gekennzeichnet,characterized,
daß in dem Antriebsstrang zwischen dem Antriebselement und dem Verstellelement (38) ein Hebelgetriebe (56) angeordnet ist.that a lever mechanism (56) is arranged in the drive train between the drive element and the adjusting element (38).
2. Möbelantrieb nach Anspruch 1, dadurch gekennzeichnet, daß das Antriebselement oder ein mit diesem ver- bundenes Zwischenteil einen Hebel (58) des Hebelgetriebes (56) lose beaufschlagt.2. Furniture drive according to claim 1, characterized in that the drive element or an intermediate part connected thereto loosely acts on a lever (58) of the lever mechanism (56).
3. Möbelantrieb nach Anspruch 2 , dadurch gekennzeichnet, daß das Zwischenteil ein Schieber (52) ist, der mit einem beim Verstellen des Verstellelementes auf Druck beanspruchbaren Hebel (58) des Hebelgetriebes (56) in Wirkungsverbindung steht. 3. Furniture drive according to claim 2, characterized in that the intermediate part is a slide (52) which is in operative connection with a lever (58) of the lever mechanism (56) which can be subjected to pressure when adjusting the adjusting element.
4. Möbelantrieb nach Anspruch 1, dadurch gekennzeichnet, daß das Hebelgetriebe (56) an wenigstens zwei in Umfangsrichtung der Schwenkachse (40) des Verstellelementes (38) zueinander beabstandeten Stellen an dem Verstellelement (38) angreift.4. Furniture drive according to claim 1, characterized in that the lever mechanism (56) engages on at least two points in the circumferential direction of the pivot axis (40) of the adjusting element (38) spaced apart on the adjusting element (38).
5. Möbelantrieb nach Anspruch 4, dadurch gekennzeichnet, daß das Hebelgetriebe (56) an wenigstens zwei bezogen auf die Schwenkachse (40) diametral gegenüberlie- genden Stellen an dem Verstellelement (38) angreift.5. Furniture drive according to claim 4, characterized in that the lever mechanism (56) acts on at least two diametrically opposite positions on the adjusting element (38) with respect to the pivot axis (40).
6. Möbelantrieb nach Anspruch 1, dadurch gekennzeichnet, daß das Hebelgetriebe (56) einen ersten Hebel (58) aufweist, dessen eines Ende an dem Verstellelement (38) angelenkt ist und der mit dem Antriebselement in Kraft- Übertragungsverbindung steht .6. Furniture drive according to claim 1, characterized in that the lever gear (56) has a first lever (58), one end of which is articulated on the adjusting element (38) and which is in force-transmission connection with the drive element.
7. Möbelantrieb nach Anspruch 6, dadurch gekennzeichnet, daß das Hebelgetriebe (56) einen zweiten Hebel (64) aufweist, der an dem Verstellelement (38) angelenkt ist, wobei zum Verstellen des Verstellelementes (38) einer der Hebel (58, 64) das Verstellelement (38) auf Zug beansprucht und der andere Hebel das Verstell- element (38) auf Druck beansprucht.7. Furniture drive according to claim 6, characterized in that the lever mechanism (56) has a second lever (64) which is articulated on the adjusting element (38), one of the levers (58, 64) for adjusting the adjusting element (38). the adjusting element (38) is subjected to tension and the other lever stresses the adjusting element (38) to pressure.
8. Möbelantrieb nach Anspruch 7, dadurch gekennzeichnet, daß der erste Hebel (58) und der zweite Hebel (64) durch Kopplungsmittel aneinander gekoppelt sind.8. Furniture drive according to claim 7, characterized in that the first lever (58) and the second lever (64) are coupled to one another by coupling means.
9. Möbelantrieb nach Anspruch 8, dadurch gekennzeichnet, daß die Kopplungsmittel einen dritten Hebel (68) aufweisen.9. Furniture drive according to claim 8, characterized in that the coupling means have a third lever (68).
10. Möbelantrieb nach Anspruch 9, dadurch gekennzeich- net, daß der dritte Hebel (68) ein zweiarmiger Hebel ist, dessen einer Hebelarm (72) an dem ersten Hebel (58) und dessen anderer Hebelarm (74) an dem zweiten Hebel (64) angelenkt ist.10. Furniture drive according to claim 9, characterized in net that the third lever (68) is a two-armed lever, one lever arm (72) on the first lever (58) and the other lever arm (74) is articulated on the second lever (64).
11. Möbelantrieb nach Anspruch 1, dadurch gekennzeichnet, daß das Antriebselement ein linear bewegliches Antriebselement ist.11. Furniture drive according to claim 1, characterized in that the drive element is a linearly movable drive element.
12. Möbelantrieb nach Anspruch 11, dadurch gekennzeichnet, daß das linear bewegliche Antriebselement eine verdrehsicher und in Axialrichtung beweglich auf einer drehantreibbaren Stellspindel gehaltene Spindel- mutter ist .12. Furniture drive according to claim 11, characterized in that the linearly movable drive element is a non-rotatable and movable in the axial direction on a rotationally driven adjusting spindle nut.
13. Möbelantrieb nach Anspruch 11, dadurch gekennzeichnet, daß das linear bewegliche Antriebselement eine in Axialrichtung bewegliche, verdrehsicher geführte Stellspindel (44) ist, auf der eine drehantreibbare Spindelmutter (46) angeordnet ist.13. Furniture drive according to claim 11, characterized in that the linearly movable drive element is an axially movable, non-rotatably guided adjusting spindle (44) on which a rotatably driven spindle nut (46) is arranged.
14. Möbelantrieb nach Anspruch 1, dadurch gekennzeichnet, daß das Verstellelement (38) drehfest mit einer drehbar gelagerten Welle (20) verbindbar ist, die in Montageposition des Möbelantriebs (36) mit einem Teil des Möbels (8, 16) zum Verstellen desselben in WirkungsVerbindung steht .14. Furniture drive according to claim 1, characterized in that the adjusting element (38) is rotatably connected to a rotatably mounted shaft (20) in the assembly position of the furniture drive (36) with part of the furniture (8, 16) for adjusting the same in Effective connection stands.
15. Möbelantrieb nach Anspruch 14, dadurch gekenn- zeichnet, daß das Verstellelement (38) zur Bildung einer drehfesten Verbindung formschlüssig mit der Welle (20) verbindbar ist.15. Furniture drive according to claim 14, characterized in that the adjusting element (38) can be positively connected to the shaft (20) to form a rotationally fixed connection.
16. Möbelantrieb nach Anspruch 15, dadurch gekenn- zeichnet, daß die Welle (20) einen unrunden Querschnitt aufweist und in Montageposition des Möbelantriebs (36) formschlüssig in eine Ausnehmung (42) des Verstellelementes (38) eingreift, die zum Querschnitt der Welle (20) im wesentlichen komplementär geformt ist.16. Furniture drive according to claim 15, characterized is characterized in that the shaft (20) has a non-circular cross-section and in the mounting position of the furniture drive (36) engages positively in a recess (42) of the adjusting element (38) which is essentially complementary to the cross-section of the shaft (20).
17. Möbelantrieb nach Anspruch 16, dadurch gekennzeichnet, daß die Ausnehmung (42) des Verstellelementes (38) in Radialrichtung der Welle (20) offen ausgebildet ist.17. Furniture drive according to claim 16, characterized in that the recess (42) of the adjusting element (38) in the radial direction of the shaft (20) is open.
18. Möbelantrieb nach Anspruch 17, dadurch gekennzeichnet, daß Verriegelungsmittel zur Verriegelung der Welle18. Furniture drive according to claim 17, characterized in that locking means for locking the shaft
(20) in der Ausnehmung (42) vorgesehen sind.(20) are provided in the recess (42).
19. Motorisch verstellbare Stützeinrichtung für eine Polsterung eines Sitz- und/oder Liegemöbels, beispielsweise eine Matratze eines Bettes,19. Motor-adjustable support device for upholstering a seating and / or reclining furniture, for example a mattress of a bed,
mit einem ersten Stützteil und wenigstens einem zweiten Stützteil zur flächigen Abstützung der Polsterung, wobei das erste Stützteil und das zweite Stützteil gelenkig miteinander verbunden sind und durch eine Antriebseinrichtung relativ zueinander verschwenkbar sind,with a first support part and at least a second support part for supporting the upholstery flat, the first support part and the second support part being connected to one another in an articulated manner and being pivotable relative to one another by a drive device,
dadurch gekennzeichnet,characterized,
daß die Antriebseinrichtung wenigstens einen Möbelantrieb (36) nach einem der vorhergehenden Ansprüche auf- weist.that the drive device has at least one furniture drive (36) according to one of the preceding claims.
20. Stützeinrichtung nach Anspruch 19, dadurch gekennzeichnet, daß die Stützeinrichtung (2) als Lattenrost ausgebildet ist. 20. Support device according to claim 19, characterized in that the support device (2) is designed as a slatted frame.
21. Sitz- und/oder Liegemöbel, dadurch gekennzeichnet, daß es eine Stützeinrichtung (2) nach Anspruch 19 oder 20 aufweist. 21. Seating and / or reclining furniture, characterized in that it has a support device (2) according to claim 19 or 20.
EP02772121A 2001-08-08 2002-08-05 Drive for furniture for displacing parts of furniture in relation to one another Expired - Lifetime EP1416832B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10138025 2001-08-08
DE10138025A DE10138025A1 (en) 2001-08-08 2001-08-08 Furniture drive for adjusting parts of a piece of furniture relative to one another
PCT/EP2002/008694 WO2003015585A1 (en) 2001-08-08 2002-08-05 Drive for furniture for displacing parts of furniture in relation to one another

Publications (3)

Publication Number Publication Date
EP1416832A1 true EP1416832A1 (en) 2004-05-12
EP1416832B1 EP1416832B1 (en) 2006-06-21
EP1416832B2 EP1416832B2 (en) 2010-08-18

Family

ID=7694208

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02772121A Expired - Lifetime EP1416832B2 (en) 2001-08-08 2002-08-05 Drive for furniture for displacing parts of furniture in relation to one another

Country Status (7)

Country Link
US (1) US20040169408A1 (en)
EP (1) EP1416832B2 (en)
JP (1) JP2004538073A (en)
CN (1) CN100346731C (en)
AT (1) ATE330514T1 (en)
DE (3) DE10138025A1 (en)
WO (1) WO2003015585A1 (en)

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Also Published As

Publication number Publication date
EP1416832B1 (en) 2006-06-21
ATE330514T1 (en) 2006-07-15
DE10138025A1 (en) 2003-05-22
DE50207317D1 (en) 2006-08-03
JP2004538073A (en) 2004-12-24
US20040169408A1 (en) 2004-09-02
CN1564667A (en) 2005-01-12
EP1416832B2 (en) 2010-08-18
CN100346731C (en) 2007-11-07
DE10293669D2 (en) 2004-10-28
WO2003015585A1 (en) 2003-02-27

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