EP1318738B1 - Furniture drive in the form of a dual drive - Google Patents

Furniture drive in the form of a dual drive Download PDF

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Publication number
EP1318738B1
EP1318738B1 EP01974265A EP01974265A EP1318738B1 EP 1318738 B1 EP1318738 B1 EP 1318738B1 EP 01974265 A EP01974265 A EP 01974265A EP 01974265 A EP01974265 A EP 01974265A EP 1318738 B1 EP1318738 B1 EP 1318738B1
Authority
EP
European Patent Office
Prior art keywords
furniture
drive
furniture drive
drive according
lever
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.)
Revoked
Application number
EP01974265A
Other languages
German (de)
French (fr)
Other versions
EP1318738A1 (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
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
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26007126&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1318738(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE2000146752 external-priority patent/DE10046752C1/en
Application filed by Linak AS, Cimosys Ltd filed Critical Linak AS
Publication of EP1318738A1 publication Critical patent/EP1318738A1/en
Application granted granted Critical
Publication of EP1318738B1 publication Critical patent/EP1318738B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • 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
    • A47C20/042Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination by means of screw-and-nut mechanism
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/015Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame divided into different adjustable sections, e.g. for Gatch position
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/018Control or drive mechanisms
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/18Mechanical movements
    • Y10T74/18056Rotary to or from reciprocating or oscillating
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/18Mechanical movements
    • Y10T74/18056Rotary to or from reciprocating or oscillating
    • Y10T74/18216Crank, lever, and slide
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/18Mechanical movements
    • Y10T74/18056Rotary to or from reciprocating or oscillating
    • Y10T74/18296Cam and slide
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/18Mechanical movements
    • Y10T74/18568Reciprocating or oscillating to or from alternating rotary
    • Y10T74/18576Reciprocating or oscillating to or from alternating rotary including screw and nut
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/21Elements
    • Y10T74/2101Cams

Definitions

  • the invention relates to a trained as a double drive furniture drive referred to in the preamble of claim 1 for adjusting parts of a piece of furniture relative to each other.
  • Such furniture drives are well known and serve, for example, as adjustment drives for adjusting parts of a slatted frame relative to each other.
  • EP 0 372 032 B1 discloses a furniture drive designed as a double drive for adjusting parts of a piece of furniture relative to one another, which has two drive units. Each drive unit cooperates in the known furniture drive with a pivot lever, which is in operative position in the mounting position of the furniture drive with a part of the furniture to be adjusted.
  • each drive unit has a linearly movable drive element, which is in operative connection with the pivot lever for pivoting the same.
  • the pivot lever is designed as an angle lever, on which the linearly movable drive element, which is formed by a spindle arranged on an adjusting spindle nut, for pivoting the pivot lever exerts a pushing action and is thus in operative connection with the pivot lever.
  • each drive unit has a linearly movable drive element in the form of a rotationally and axially movably held on an adjusting spindle spindle nut, the for pivoting in the mounting position with a to be adjusted Part of a furniture in operative connection standing pivot lever has.
  • each drive unit of the known from the publication double drive on a right-angled system part, one of which is parallel to the linear axis of movement of the spindle nut extending holding leg connected to the spindle nut and the other, perpendicular to the axis of movement of the spindle nut leg facing away from the pivot axis Loosely applied to the end of the pivoting lever.
  • the invention has for its object to provide a trained as a double drive furniture drive referred to in the preamble of claim 1 species that is simple in construction and thus inexpensive to manufacture and compact.
  • the basic idea of the teaching according to the invention is to provide on the linearly movable drive element or an associated system part a contact surface on which the pivot lever runs during the relative movement between the linearly movable drive element and the pivot lever, wherein the pivot lever with the contact surface substantially in the manner of a Curve drive cooperates and is thereby pivoted.
  • a particular advantage of the furniture drive according to the invention is that, in particular when exploiting the principle of action of an inclined plane of the pivot lever can be made shorter than in the known furniture drive. In this way, the furniture drive according to the invention can be carried out with a relatively low height.
  • Another advantage of the furniture drive according to the invention is that it is robust in construction and suitable for applying large forces.
  • the furniture drive according to the invention is designed as a double drive. However, it is also possible to design the furniture drive as a single drive while retaining the principle of operation according to the invention in principle.
  • the part on which the abutment surface is formed may have any suitable shape.
  • a further embodiment provides that this part is substantially wedge-shaped or ramp-shaped. This embodiment is particularly simple and therefore inexpensive to produce, wherein the inclined relative to the axis of movement of the linearly movable drive element bearing surface is formed by the wedge or ramp shape.
  • the contact surface is a substantially flat surface.
  • the contact surface can be maintained under principle
  • the principle of action according to the invention of an inclined plane may also be arcuate in cross-section, as provided by another embodiment.
  • By appropriate choice of the cross section of the contact surface can be selected within wide limits by which pivot angle of the pivot lever pivoted when the linearly movable drive element moves along its axis of movement relative to the pivot lever by a certain distance.
  • the contact surface with the linear axis of movement of the drive element forms an acute angle, in particular an angle which is less than about 45 °, while in the embodiment with the arcuate contact surface in cross section It is advantageous that an imaginary connecting line between the end points of the arcuate cross section forms an acute angle with the linear movement axis of the drive element, in particular an angle which is smaller than 45 °. In this way, particularly favorable angle of articulation of the pivot lever arise during the entire adjustment.
  • the contact surface may be convex or concave toward the pivoting lever, as provided by other developments.
  • the pivot lever may have any suitable shape, in particular be designed as a one-armed lever, which abuts in the mounting position with its end facing away from the pivot axis, ie eccentrically to the pivot axis, on the contact surface.
  • the pivot lever is usually not part of the furniture drive according to the invention, but part of a on a Slatted frame or the like mounted adjustment fitting.
  • the pivot lever can basically also be part of the furniture drive according to the invention.
  • For assembly of the furniture drive must then, for example, still a rotationally fixed connection between the pivot lever and a pivot shaft of the adjustment fitting are made.
  • a further embodiment provides that the pivot lever rests in the mounting position of the furniture drive with a rotatably mounted roller on the contact surface. In this way, the friction between the pivot lever and the abutment surface is substantially reduced during the adjustment, so that power losses due to friction are avoided. Furthermore, the wear of the contact surface is substantially reduced.
  • the abutment surface can be formed directly on the linearly movable drive element or on an abutment part suitably connected to the drive element.
  • the part on which the contact surface is formed in this case may consist of any suitable material. Appropriately, however, this part is made of plastic. This embodiment is particularly simple and therefore inexpensive to produce.
  • Another advantageous embodiment provides that the part on which the contact surface is formed, supported during the adjustment of a housing of the furniture drive or an associated part.
  • the part of the reaction force of the pivot lever which is perpendicular to the axis of movement of the drive element, introduced into the housing.
  • a development of the aforementioned embodiment provides that the contact surface has a support portion on which the pivot lever is supported in an end position of the adjusting so that of the pivot lever in the part on which the contact surface is formed, introduced forces substantially completely perpendicular to Motion axis of the drive element act.
  • the contact surface has a support portion on which the pivot lever is supported in an end position of the adjusting so that of the pivot lever in the part on which the contact surface is formed, introduced forces substantially completely perpendicular to Motion axis of the drive element act.
  • the linearly movable drive element can be designed in any suitable manner.
  • An expedient development provides that the linearly movable drive element is a rotationally fixed and held in the axial direction movable on a rotationally driven adjusting spindle spindle nut.
  • Such spindle drives are available as simple and inexpensive standard components and are robust in construction and suitable for applying particularly large forces.
  • the linearly movable drive element may also be a movable in its axial direction adjusting spindle, on which a stationary, rotatably driven spindle nut is arranged.
  • pivot lever is rotatably connected in the mounting position of the furniture drive with a rotatably mounted shaft, which is in operative connection with a part of the furniture to be adjusted.
  • the pivot lever is usually not part of the furniture drive, but a Verstellbeschlages, such as a slatted base.
  • the pivot lever can also be part of the furniture drive.
  • each drive unit has an electric motor and / or that the drive units of the double drive are accommodated in a common housing.
  • the pivot lever is suitably a one-armed lever.
  • a particularly advantageous development of the teaching of the invention provides that an adjacent to the pivot axis part of the lever arm of the pivot lever with an adjacent to the free end of the lever arm portion of the lever arm forms an angle, such that the pivot lever is angled or bent.
  • the furniture drive can be performed with a particularly low height.
  • the angle may be an acute angle or about 90 °, as appropriate expansions provide.
  • the contact surface the pivot axis remote from the side of the system part is formed.
  • the forces acting on the pivot lever during the adjustment forces seek to draw the pivot shaft of the pivot lever in the housing of the furniture drive, so that a locking device, which may be formed, for example, as a closer and the pivot shaft is locked to the housing, largely relieved. In this way, damage to the locking device is reliably prevented.
  • the pivot lever can be subjected to pressure during the adjustment movement. According to one embodiment, however, the pivot lever during the adjustment movement is claimed to train. In this way, an introduction of forces into the housing of the furniture drive takes place substantially only in the region in which the pivot lever is arranged.
  • a furniture drive 2 which is formed in this embodiment as a double drive and two drive units 4, 4 ', which are received in a common housing 6 and held by not shown fastening means on this. Subsequently, only the drive unit 4 is closer explained.
  • the drive unit 4 ' is constructed accordingly, and its components are provided with reference numerals corresponding to the reference numerals of the components of the drive unit 4.
  • the drive unit 4 has a linearly movable drive element, which is formed in this embodiment by a in its axial direction in the direction of a double arrow 8 back and forth adjusting spindle 10 which is formed in this embodiment as a threaded spindle.
  • a stationary, provided with an internal thread spindle nut 12 is arranged, which is rotatably driven by an in the drawing only schematically indicated electric motor 14 and a not-shown gear.
  • the adjusting spindle 14 is in the mounting position of the furniture drive 2 with a pivotally mounted about a pivot axis 16 pivot lever 18 for pivoting the same in operative connection.
  • the pivot lever 18 is not part of the furniture drive 2 in this embodiment, but part of a Verstellbeschlages a supporting device, not shown in Fig. 1 for supporting a padding of a seat and / or reclining furniture, such as a slatted frame.
  • the pivot lever 18 is, as shown in Fig. 1, received in a recess formed in the housing 6 20 and locked by a locking element 22 in the recess 20, which allows pivoting of the pivot lever 18, but at the same time is prevented that the Swivel lever 18 from the recess 20 triggers.
  • the abutment part 24 is formed in this embodiment at its the pivot axis 16 facing top ramp-shaped as an inclined plane, as shown in FIG. 1 can be seen.
  • the abutment surface 26 is inclined relative to the linear movement axis 30 of the adjusting spindle 10 at an acute angle of about 18 °.
  • the inclination of the contact surface 26 relative to the movement axis 30 can be selected within wide limits in accordance with the respective requirements.
  • Fig. 2 shows the drive unit 4 in an enlarged view in a first end position of the adjusting movement, in which the pivot lever 18 is not yet applied to the contact surface 26 of the system part 24.
  • This first end position corresponds to a position in which the adjustable by means of the furniture drive 2 parts of a piece of furniture are not adjusted relative to each other.
  • the pivot lever 18 which is formed in this embodiment as a one-armed lever at its end, that is eccentric to the pivot axis 16, a rotatably mounted roller 28, the below with reference to FIG .. 7 is explained in more detail.
  • the linear movement axis of the adjusting spindle 10 is symbolized in FIG. 2 by a dot-dash line 29.
  • the spindle nut 12 For pivoting the pivot lever 18 and thus for adjusting a standing with the pivot lever 18 in operative connection, not shown in FIG. 2 part of a furniture, the spindle nut 12 is rotated by the electric motor 14 so that the adjusting spindle 10 in the direction of arrow 30 in FIG 2 moves to the left.
  • the control of the electric motor 14 and a not visible in Fig. 2 electric motor 14 'of the drive unit 4' is effected by a control device not shown in the drawing, by which the drive units 4, 4 'together or separately controlled.
  • the power supply of the drive units 4, 4 ' is effected by a voltage supply device, also not shown in the drawing.
  • the pivot lever 18 Upon movement of the adjusting spindle 10 with the contact part 24 in Fig. 2 to the left, the pivot lever 18 comes with its roller 28 first to the contact surface 26 to the plant and then runs on the inclined surface formed as an abutment surface 26 of the system part 24 and pivots this, as shown in Fig. 3.
  • the roller 28 of the pivot lever 18 rolls on the contact surface 26, so that only a small friction occurs and wear of the contact surface 26 is avoided.
  • pivot lever 18 When pivoting the pivot lever 18 adjusts a not shown in Figures 1 to 4 part of a piece of furniture with which the pivot lever 18 is suitably in operative connection.
  • the contact part 24 is supported on a not shown in FIGS. 2 to 4 Guide the housing 6 from, so that a perpendicular to the axis of movement 29 of the adjusting spindle 10 acting part of the reaction force of the pivot lever 18 is received by the housing 6 and thus not introduced into the adjusting spindle 10.
  • Fig. 4 illustrates the other end position of the adjustment, which corresponds to a maximum adjustment of the part to be adjusted of the furniture, not shown.
  • the pivot lever 18 is supported on a flat support portion 32 of the abutment surface 26.
  • the support portion 32 is not inclined and extends in the embodiment substantially horizontally. It lies in a plane which is essentially parallel to a support plane in which the contact part 24 is supported on the housing 6 on the guide not shown in FIGS. 2 to 4.
  • the initiated by the pivot lever 18 in the system part 24 reaction force in this adjustment substantially only one perpendicular to the movement axis 29 acting component, so that even at a high load of the part of the furniture, not shown in FIG.
  • Fig. 5 is provided with the furniture drive 2 support means for supporting a padding of a seat and / or reclining furniture is shown, which is formed in this embodiment by a slatted frame 34.
  • the slatted frame 34 has a frame 35 and a plurality of hingedly connected support parts.
  • the slatted frame 34 has a central support member 36, one side of which pivotally and pivotally about a horizontal pivot axis, an upper body support member 38 is connected to the middle support member 36 side facing pivotally and pivotable about a horizontal pivot axis, a head support member 40 is connected.
  • a leg support member or thigh support member 42 is connected to the middle support member 36 side facing pivotally and about a horizontal pivot axis pivotally a calf support member 44 is connected.
  • a pivotable adjusting lever 46 is provided which is rotatably connected to a pivot shaft 48, with which the pivot lever 18 is rotatably connected.
  • the adjusting lever 46 is thus pivotable about the pivot axis 16 together with the pivot lever 18.
  • a further adjusting lever 50 is provided which is non-rotatably connected to a further pivot shaft 52, with which also the drive unit 4 'associated pivot lever 18' is rotatably connected.
  • the further adjusting lever 50 is thus pivotable together with the pivot lever 18 'about its pivot axis 16'.
  • Fig. 5 shows the slatted frame 34 in a position in which the support members 36, 38, 40, 42 are not adjusted relative to each other.
  • the spindle nut 12 To adjust the leg support member 42 and the calf support member 44 relative to the central support member 26 drives the electric motor 14, the spindle nut 12 such that the adjusting spindle 10 moves with the contact part 24 in Fig. 5 to the left, so that the pivot lever 18 on the contact surface 26 runs up and pivoted about its pivot axis 16.
  • the adjusting lever 46 pivots and adjusts the calf support part 44 together with the leg support part 42 until the end position of the adjusting movement shown in FIG. 6 is reached.
  • the electric motor 14 drives the spindle nut 12 such that the adjusting spindle 10 moves together with the contact part 24 in Fig. 5 to the right.
  • the provision of the upper body support member 38 and the head support member 40 is carried out in a corresponding manner.
  • the furniture drive 2 according to the invention is simple and cost-effective in construction as well as robust. Due to the utilization of the principle of action of an inclined plane, the pivot lever 18, 18 'may be formed relatively short, so that there is a compact structure with low overall height. As can be seen from FIGS. 5 and 6, the furniture drive 2 according to the invention does not protrude beyond the frame 35 of the slatted frame 34 due to this low overall height.
  • the housing 6 For mounting the furniture drive 2 on the slatted frame 34, the housing 6 is attached from below to the slatted base 34, so that the pivot lever 18, 18 'of the slatted frame in the recesses 20, 20' of the housing 6 engage. Subsequently, the locking elements 22, 22 'mounted so that it is prevented that the furniture drive 2 dissolves from the slatted frame 34.
  • Fig. 7 shows schematically a view from the left in Fig. 2 on the pivot lever 18 and the plant part, wherein the housing 6 is shown in section. From this figure it can be seen that the pivot lever 18 has two mutually parallel arms 62, 64, between which the roller 28 is rotatably supported. The arms 62, 64 are rotatably connected to the pivot shaft 48. As further shown in Fig. 7, the locking element 22 is plate-shaped.
  • abutment member 24 is supported on rail-like guides 66, 68 in a support plane, which is symbolized in Fig. 7 by a dashed line 70.
  • the support portion 32 of the abutment member 26 lies in a plane which is parallel to the support plane 70.
  • a second embodiment of a furniture drive 2 according to the invention is shown, which initially differs from the embodiment of FIG. 1 in that the linearly movable drive element the drive unit 4 is formed by the spindle nut 12, which is arranged against rotation and movable in the axial direction of the adjusting spindle 10 on this.
  • the adjusting spindle 10 is rotatably mounted and is connected via a gear 72 with the electric motor 14 in rotary drive connection.
  • the spindle nut 10 forms in this embodiment, the contact part on which the contact surface 26 is formed, in which a recess 74 is formed, through which the adjusting spindle 10 extends.
  • the abutment surface 26 is formed on the side of the abutment part facing the pivot axis 16
  • the abutment surface 26 is on the side facing away from the pivot axis 16, ie the underside of the abutment Plant parts formed.
  • the pivot lever 18 is also formed in this embodiment as a one-armed lever, wherein an adjacent to the pivot axis 16 arranged part 76 of the lever arm 78 with an adjacent to the free end of the lever arm 78 disposed portion 80 of the lever arm 78 forms an angle in this embodiment is about 90 °, such that the lever arm 78 is formed angled.
  • the pivoting lever 18 has, in addition to the lever arm 78, a further lever arm 82 which is arranged parallel to the lever arm 78, wherein the adjusting spindle 10 is received in the direction of the pivot axis 16 between the lever arms 78, 82.
  • a single lever arm is sufficient.
  • the embodiment of FIG. 8 Due to the design of the pivot lever 18 as an angled lever and the arrangement of the contact surface 26 on the side remote from the pivot axis 18 side of the spindle nut 12, the embodiment of FIG. 8 has a particularly low overall height.
  • the forces acting on the pivoting lever 18 during the adjusting movement seek to draw the pivoting shaft of the pivoting lever 18 into the housing 6.

Landscapes

  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Health & Medical Sciences (AREA)
  • Legs For Furniture In General (AREA)
  • Cabinets, Racks, Or The Like Of Rigid Construction (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Hinges (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Transmission Devices (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Liquid Crystal Substances (AREA)
  • Furniture Connections (AREA)
  • Lock And Its Accessories (AREA)
  • Vending Machines For Individual Products (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

The invention relates to a furniture drive ( 2 ) for adjusting parts of a piece of furniture in relation to one another which is configured as a dual drive. Said drive comprises two drive units ( 4, 4' ), every drive unit ( 4, 4' ) being provided with a linearly displaceable drive element that is functionally linked with a pivoted lever for pivoting said lever in the mounting position of the furniture drive. Said pivoted lever in turn is functionally linked with a part of the piece of furniture to be adjusted. The drive according to the invention is further characterized in that the linearly displaceable drive element or a support element ( 24 ) linked therewith is provided with a support surface ( 26 ) for supporting the pivoted lever ( 18 ) in a position remote from its pivot axis ( 16 ) in the mounting position of the furniture drive ( 2 ), which surface is inclined with respect to the axis of motion ( 29 ) of the drive element. The inventive furniture drive ( 2 ) is simple in design and therefore inexpensive, it is furthermore advantageous in that it is very compact.

Description

Die Erfindung betrifft einen als Doppelantrieb ausgebildeten Möbelantrieb der im Oberbegriff des Anspruchs 1 genannten Art zum Verstellen von Teilen eines Möbels relativ zueinander.The invention relates to a trained as a double drive furniture drive referred to in the preamble of claim 1 for adjusting parts of a piece of furniture relative to each other.

Derartige Möbelantriebe sind allgemein bekannt und dienen beispielsweise als Verstellantriebe zum Verstellen von Teilen eines Lattenrostes relativ zueinander. Durch EP 0 372 032 B1 ist ein als Doppelantrieb ausgebildeter Möbelantrieb zum Verstellen von Teilen eines Möbels relativ zueinander bekannt, der zwei Antriebseinheiten aufweist. Jede Antriebseinheit wirkt bei dem bekannten Möbelantrieb mit einem Schwenkhebel zusammen, der in Montageposition des Möbelantriebs mit einem zu verstellenden Teil des Möbels in Wirkungsverbindung steht. Bei dem bekannten Möbelantrieb weist jede Antriebseinheit ein linear bewegliches Antriebselement auf, das mit dem Schwenkhebel zum Verschwenken desselben in Wirkungsverbindung steht. Hierbei ist der Schwenkhebel als Winkelhebel ausgebildet, auf den das linear bewegliche Antriebselement, das durch eine auf einer Stellspindel angeordnete Spindelmutter gebildet ist, zum Verschwenken des Schwenkhebels eine Schubwirkung ausübt und so mit dem Schwenkhebel in Wirkungsverbindung steht.Such furniture drives are well known and serve, for example, as adjustment drives for adjusting parts of a slatted frame relative to each other. EP 0 372 032 B1 discloses a furniture drive designed as a double drive for adjusting parts of a piece of furniture relative to one another, which has two drive units. Each drive unit cooperates in the known furniture drive with a pivot lever, which is in operative position in the mounting position of the furniture drive with a part of the furniture to be adjusted. In the known furniture drive, each drive unit has a linearly movable drive element, which is in operative connection with the pivot lever for pivoting the same. Here, the pivot lever is designed as an angle lever, on which the linearly movable drive element, which is formed by a spindle arranged on an adjusting spindle nut, for pivoting the pivot lever exerts a pushing action and is thus in operative connection with the pivot lever.

Durch DE 38 420 78 C2 ist ein als Doppelantrieb ausgebildeter Möbelantrieb zum Verstellen von Teilen eines Möbels relativ zueinander bekannt, der zwei Antriebseinheiten aufweist, wobei jede Antriebseinheit ein linear bewegliches Antriebselement in Form einer verdrehsicher und in Axialrichtung beweglich auf einer Stellspindel gehaltene Spindelmutter aufweist, die zum Verschwenken eines im Montageposition mit einem zu verstellenden Teil eines Möbels in Wirkungsverbindung stehenden Schwenkhebels aufweist. Zum Zusammenwirken mit dem Schwenkhebel weist jede Antriebseinheit des aus der Druckschrift bekannten Doppelantriebs ein rechtwinklig ausgebildetes Anlageteil auf, dessen einer parallel zur linearen Bewegungsachse der Spindelmutter verlaufender Halteschenkel mit der Spindelmutter verbunden ist und dessen anderer, senkrecht zur Bewegungsachse der Spindelmutter stehender Schenkel das der Schwenkachse abgewandte Ende des Schwenkhebels lose beaufschlagt.By DE 38 420 78 C2 designed as a double drive furniture drive for adjusting parts of a furniture relative to each other is known, which has two drive units, each drive unit has a linearly movable drive element in the form of a rotationally and axially movably held on an adjusting spindle spindle nut, the for pivoting in the mounting position with a to be adjusted Part of a furniture in operative connection standing pivot lever has. For interaction with the pivot lever, each drive unit of the known from the publication double drive on a right-angled system part, one of which is parallel to the linear axis of movement of the spindle nut extending holding leg connected to the spindle nut and the other, perpendicular to the axis of movement of the spindle nut leg facing away from the pivot axis Loosely applied to the end of the pivoting lever.

Durch DE 296 07 493 U1 ist ein Möbelantrieb bekannt, bei dem an einer Spindelmutter zwei in Richtung der Bewegungsachse zueinander versetzte, im wesentlichen horizontale Anlageflächen gebildet sind, die zum Verstellen eines Teils eines Möbels mit einem Anlenkhebel zusammenwirken, der zwei im Winkelversatz zueinander stehende Hebelarme aufweist.By DE 296 07 493 U1 a furniture drive is known in which two spindle offset in the direction of the movement axis, substantially horizontal contact surfaces are formed on a spindle, which cooperate for adjusting a part of a piece of furniture with an articulation lever, the two mutually angularly disposed lever arms having.

Der Erfindung liegt die Aufgabe zugrunde, einen als Doppelantrieb ausgebildeten Möbelantrieb der im Oberbegriff des Anspruchs 1 genannten Art anzugeben, der einfach im Aufbau und damit kostengünstig herstellbar sowie kompakt ist.The invention has for its object to provide a trained as a double drive furniture drive referred to in the preamble of claim 1 species that is simple in construction and thus inexpensive to manufacture and compact.

Diese Aufgabe wird durch die im Anspruch 1 angegebene Lehre gelöst.This object is achieved by the teaching defined in claim 1.

Der Grundgedanke der erfindungsgemäßen Lehre besteht darin, an dem linear beweglichen Antriebselement oder einem damit verbundenen Anlageteil eine Anlagefläche vorzusehen, auf die der Schwenkhebel bei der Relativbewegung zwischen dem linear beweglichen Antriebselement und dem Schwenkhebel aufläuft, wobei der Schwenkhebel mit der Anlagefläche im wesentlichen nach Art eines Kurventriebes zusammenwirkt und hierdurch verschwenkt wird.The basic idea of the teaching according to the invention is to provide on the linearly movable drive element or an associated system part a contact surface on which the pivot lever runs during the relative movement between the linearly movable drive element and the pivot lever, wherein the pivot lever with the contact surface substantially in the manner of a Curve drive cooperates and is thereby pivoted.

Auf diese Weise ergibt sich ein einfacher und damit kostengünstiger Aufbau des erfindungsgemäßen Möbelantriebs mit relativ wenigen Bauteilen.In this way, results in a simpler and thus cost-effective design of the furniture drive according to the invention with relatively few components.

Ein besonderer Vorteil des erfindungsgemäßen Möbelantriebs besteht darin, daß insbesondere bei Ausnutzung des Wirkungsprinzips einer schiefen Ebene der Schwenkhebel kürzer ausgebildet sein kann als bei dem bekannten Möbelantrieb. Auf diese Weise kann der erfindungsgemäße Möbelantrieb mit einer relativ geringen Bauhöhe ausgeführt werden. Dies hat den wesentlichen Vorteil, daß bei Kombination beispielsweise eines Lattenrostes mit einem erfindungsgemäßen Möbelantrieb die so gebildete Einheit eine Bauhöhe aufweist, die nicht oder nur geringfügig größer ist als die Bauhöhe des Lattenrostes alleine.A particular advantage of the furniture drive according to the invention is that, in particular when exploiting the principle of action of an inclined plane of the pivot lever can be made shorter than in the known furniture drive. In this way, the furniture drive according to the invention can be carried out with a relatively low height. This has the significant advantage that in combination, for example, a slatted base with a furniture drive according to the invention, the unit thus formed has a height that is not or only slightly larger than the height of the slatted base alone.

Ein weiterer Vorteil des erfindungsgemäßen Möbelantriebs besteht darin, daß er robust im Aufbau und zur Aufbringung großer Kräfte geeignet ist.Another advantage of the furniture drive according to the invention is that it is robust in construction and suitable for applying large forces.

Der erfindungsgemäße Möbelantrieb ist als Doppelantrieb ausgebildet. Unter grundsätzlicher Beibehaltung des erfindungsgemäßen Wirkungsprinzips ist es jedoch auch möglich, den Möbelantrieb als Einzelantrieb auszubilden.The furniture drive according to the invention is designed as a double drive. However, it is also possible to design the furniture drive as a single drive while retaining the principle of operation according to the invention in principle.

Das Teil, an dem die Anlagefläche ausgebildet ist, kann eine beliebige geeignete Form aufweisen. Eine Weiterbildung sieht vor, daß dieses Teil im wesentlichen keilförmig oder rampenförmig ausgebildet ist. Diese Ausführungsform ist besonders einfach und damit kostengünstig herstellbar, wobei durch die Keil- oder Rampenform die relativ zur Bewegungsachse des linear beweglichen Antriebselementes geneigte Anlagefläche gebildet ist.The part on which the abutment surface is formed may have any suitable shape. A further embodiment provides that this part is substantially wedge-shaped or ramp-shaped. This embodiment is particularly simple and therefore inexpensive to produce, wherein the inclined relative to the axis of movement of the linearly movable drive element bearing surface is formed by the wedge or ramp shape.

Eine andere Weiterbildung sieht vor, daß die Anlagefläche eine im wesentlichen ebene Fläche ist. Die Anlagefläche kann jedoch unter grundsätzlicher Beibehaltung des erfindungsgemäßen Wirkungsprinzips einer schiefen Ebene auch im Querschnitt bogenförmig ausgebildet sein, wie dies eine andere Ausführungsform vorsieht. Durch entsprechende Wahl des Querschnitts der Anlagefläche ist in weiten Grenzen wählbar, um welchen Schwenkwinkel der Schwenkhebel verschwenkt, wenn das linear bewegliche Antriebselement sich entlang seiner Bewegungsachse relativ zu dem Schwenkhebel um eine bestimmte Strecke bewegt.Another embodiment provides that the contact surface is a substantially flat surface. However, the contact surface can be maintained under principle The principle of action according to the invention of an inclined plane may also be arcuate in cross-section, as provided by another embodiment. By appropriate choice of the cross section of the contact surface can be selected within wide limits by which pivot angle of the pivot lever pivoted when the linearly movable drive element moves along its axis of movement relative to the pivot lever by a certain distance.

Bei der Ausführungsform mit der im wesentlichen ebenen Anlagefläche ist es vorteilhaft, daß die Anlagefläche mit der linearen Bewegungsachse des Antriebselementes einen spitzen Winkel bildet, insbesondere einen Winkel, der kleiner als etwa 45° ist, während es bei der Ausführungsform mit der im Querschnitt bogenförmigen Anlagefläche vorteilhaft ist, daß eine gedachte Verbindungslinie zwischen den Endpunkten des bogenförmigen Querschnitts mit der linearen Bewegungsachse des Antriebselementes einen spitzen Winkel bildet, insbesondere einen Winkel, der kleiner als 45° ist. Auf diese Weise ergeben sich während der gesamten Verstellbewegung besonders günstige Anlenkwinkel des Schwenkhebels.In the embodiment with the substantially planar contact surface, it is advantageous that the contact surface with the linear axis of movement of the drive element forms an acute angle, in particular an angle which is less than about 45 °, while in the embodiment with the arcuate contact surface in cross section It is advantageous that an imaginary connecting line between the end points of the arcuate cross section forms an acute angle with the linear movement axis of the drive element, in particular an angle which is smaller than 45 °. In this way, particularly favorable angle of articulation of the pivot lever arise during the entire adjustment.

Bei der Ausführungsform mit der im Querschnitt bogenförmigen Anlagefläche kann die Anlagefläche zu dem Schwenkhebel hin konvex oder konkav ausgebildet sein, wie dies andere Weiterbildungen vorsehen.In the embodiment with the cross-sectionally arcuate contact surface, the contact surface may be convex or concave toward the pivoting lever, as provided by other developments.

Der Schwenkhebel kann eine beliebige geeignete Form aufweisen, insbesondere als einarmiger Hebel ausgebildet sein, der in Montageposition mit seinem der Schwenkachse abgewandten Ende, d. h. exzentrisch zu der Schwenkachse, an der Anlagefläche anliegt. Hierbei ist der Schwenkhebel in der Regel nicht Teil des erfindungsgemäßen Möbelantriebs, sondern Teil eines an einem Lattenrost oder dergleichen angebrachten Verstellbeschlages. Der Schwenkhebel kann jedoch grundsätzlich auch ein Teil des erfindungsgemäßen Möbelantriebes sein. Zur Montage des Möbelantriebes muß dann beispielsweise noch eine drehfeste Verbindung zwischen dem Schwenkhebel und einer Schwenkwelle des Verstellbeschlages hergestellt werden. Eine Weiterbildung sieht vor, daß der Schwenkhebel in Montageposition des Möbelantriebs mit einer drehbar gelagerten Rolle an der Anlagefläche anliegt. Auf diese Weise ist während der Verstellbewegung die Reibung zwischen dem Schwenkhebel und der Anlagefläche wesentlich verringert, so daß Kraftverluste aufgrund von Reibung vermieden sind. Ferner ist die Abnutzung der Anlagefläche wesentlich verringert.The pivot lever may have any suitable shape, in particular be designed as a one-armed lever, which abuts in the mounting position with its end facing away from the pivot axis, ie eccentrically to the pivot axis, on the contact surface. Here, the pivot lever is usually not part of the furniture drive according to the invention, but part of a on a Slatted frame or the like mounted adjustment fitting. However, the pivot lever can basically also be part of the furniture drive according to the invention. For assembly of the furniture drive must then, for example, still a rotationally fixed connection between the pivot lever and a pivot shaft of the adjustment fitting are made. A further embodiment provides that the pivot lever rests in the mounting position of the furniture drive with a rotatably mounted roller on the contact surface. In this way, the friction between the pivot lever and the abutment surface is substantially reduced during the adjustment, so that power losses due to friction are avoided. Furthermore, the wear of the contact surface is substantially reduced.

Die Anlagefläche kann unmittelbar an dem linear beweglichen Antriebselement.oder an einem mit dem Antriebselement in geeigneter Weise verbundenen Anlageteil gebildet sein. Das Teil, an dem die Anlagefläche gebildet ist, kann hierbei aus einem beliebigen geeigneten Material bestehen. Zweckmäßigerweise besteht dieses Teil jedoch aus Kunststoff. Diese Ausführungsform ist besonders einfach und damit kostengünstig herstellbar.The abutment surface can be formed directly on the linearly movable drive element or on an abutment part suitably connected to the drive element. The part on which the contact surface is formed, in this case may consist of any suitable material. Appropriately, however, this part is made of plastic. This embodiment is particularly simple and therefore inexpensive to produce.

Eine andere vorteilhafte Weiterbildung sieht vor, daß sich das Teil, an dem die Anlagefläche gebildet ist, während der Verstellbewegung an einem Gehäuse des Möbelantriebs oder einem damit verbundenen Teil abstützt. Auf diese Weise wird der Teil der Reaktionskraft des Schwenkhebels, der senkrecht zur Bewegungsachse des Antriebselements verläuft, in das Gehäuse eingeleitet. Hierdurch ist beispielsweise bei einem Spindeltrieb vermieden, daß an der Stellspindel Biegemomente auftreten, die zu einer Beschädigung der Stellspindel führen könnten.Another advantageous embodiment provides that the part on which the contact surface is formed, supported during the adjustment of a housing of the furniture drive or an associated part. In this way, the part of the reaction force of the pivot lever, which is perpendicular to the axis of movement of the drive element, introduced into the housing. As a result, for example, avoided in a spindle drive that bending moments occur on the adjusting spindle, which leads to damage of the adjusting spindle could lead.

Eine Weiterbildung der vorgenannten Ausführungsform sieht vor, daß die Anlagefläche einen Stützabschnitt aufweist, an dem sich der Schwenkhebel in einer Endlage der Verstellbewegung derart abstützt, daß von dem Schwenkhebel in das Teil, an dem die Anlagefläche gebildet ist, eingeleitete Kräfte im wesentlichen vollständig senkrecht zur Bewegungsachse des Antriebselementes wirken. Auf diese Weise treten in der Endlage der Verstellbewegung an den Bauteilen des Möbelantriebs praktisch keine in Richtung der Bewegungsachse des Antriebselementes wirkenden Kräfte auf, die das Teil, an dem die Anlagefläche gebildet ist, gegen die Antriebskraft des Möbelantriebs zurückzubewegen suchen. Dadurch sind die Bauteile des Möbelantriebs in dieser Endlage von in Richtung der Bewegungsachse des Antriebselementes wirkenden Kräfte nahezu vollständig entlastet. Dies ist insbesondere deshalb von Vorteil, weil in einer Endlage, die beispielsweise einer maximalen Verschwenkstellung eines mit einem erfindungsgemäßen Möbelantrieb verschwenkten Teiles eines Lattenrostes entsprechen kann, in der Regel die höchsten Kräfte auf den Möbelantrieb wirken und ohne Entlastung der Bauteile des Möbelantriebs zu einer Beschädigung des Möbelantriebs führen könnten.A development of the aforementioned embodiment provides that the contact surface has a support portion on which the pivot lever is supported in an end position of the adjusting so that of the pivot lever in the part on which the contact surface is formed, introduced forces substantially completely perpendicular to Motion axis of the drive element act. In this way, occur in the final position of the adjustment of the components of the furniture drive virtually no forces acting in the direction of the axis of movement of the drive element, which seek to move back the part on which the contact surface is formed against the driving force of the furniture drive. As a result, the components of the furniture drive in this end position of acting in the direction of the axis of movement of the drive element forces are almost completely relieved. This is particularly advantageous because in an end position, which may correspond, for example, a maximum pivoting of a pivoted with a furniture drive invention part of a slatted base, usually the highest forces act on the furniture drive and without relieving the components of the furniture drive to damage the Could lead furniture drive.

Das linear bewegliche Antriebselement kann in beliebiger geeigneter Weise ausgebildet sein. Eine zweckmäßige Weiterbildung sieht vor, daß das linear bewegliche Antriebselement eine verdrehsicher und in Axialrichtung beweglich auf einer drehantreibbaren Stellspindel gehaltene Spindelmutter ist. Derartige Spindeltriebe stehen als einfache und kostengünstige Standardbauteile zur Verfügung und sind robust im Aufbau und zur Aufbringung besonders großer Kräfte geeignet.The linearly movable drive element can be designed in any suitable manner. An expedient development provides that the linearly movable drive element is a rotationally fixed and held in the axial direction movable on a rotationally driven adjusting spindle spindle nut. Such spindle drives are available as simple and inexpensive standard components and are robust in construction and suitable for applying particularly large forces.

In kinematischer Umkehrung der vorgenannten Ausführungsform kann das linear bewegliche Antriebselement auch eine in ihrer Axialrichtung bewegliche Stellspindel sein, auf der eine ortsfeste, drehantreibbare Spindelmutter angeordnet ist.In kinematic reversal of the aforementioned embodiment, the linearly movable drive element may also be a movable in its axial direction adjusting spindle, on which a stationary, rotatably driven spindle nut is arranged.

Eine andere Weiterbildung sieht vor, daß der Schwenkhebel in Montageposition des Möbelantriebs drehfest mit einer drehbar gelagerten Welle verbunden ist, die mit einem zu verstellenden Teil des Möbels in Wirkungsverbindung steht. Hierbei ist der Schwenkhebel in der Regel nicht Teil des Möbelantriebs, sondern eines Verstellbeschlages, beispielsweise eines Lattenrostes. Der Schwenkhebel kann jedoch auch Teil des Möbelantriebs sein.Another embodiment provides that the pivot lever is rotatably connected in the mounting position of the furniture drive with a rotatably mounted shaft, which is in operative connection with a part of the furniture to be adjusted. Here, the pivot lever is usually not part of the furniture drive, but a Verstellbeschlages, such as a slatted base. However, the pivot lever can also be part of the furniture drive.

Andere zweckmäßige Weiterbildungen sehen vor, daß jede Antriebseinheit einen Elektromotor aufweist und/oder daß die Antriebseinheiten des Doppelantriebs in einem gemeinsamen Gehäuse aufgenommen sind.Other expedient developments provide that each drive unit has an electric motor and / or that the drive units of the double drive are accommodated in a common housing.

Der Schwenkhebel ist zweckmäßigerweise ein einarmiger Hebel.The pivot lever is suitably a one-armed lever.

Eine besonders vorteilhafte Weiterbildung der erfindungsgemäßen Lehre sieht vor, daß ein zu der Schwenkachse benachbarter Teil des Hebelarmes des Schwenkhebels mit einem zu dem freien Ende des Hebelarmes benachbarten Teil des Hebelarmes einen Winkel bildet, derart, daß der Schwenkhebel abgewinkelt oder abgebogen ausgebildet ist. Bei dieser Ausführungsform kann der Möbelantrieb mit besonders geringer Bauhöhe ausgeführt werden.A particularly advantageous development of the teaching of the invention provides that an adjacent to the pivot axis part of the lever arm of the pivot lever with an adjacent to the free end of the lever arm portion of the lever arm forms an angle, such that the pivot lever is angled or bent. In this embodiment, the furniture drive can be performed with a particularly low height.

Bei der vorgenannten Ausführungsform kann der Winkel eine spitzer Winkel sein oder etwa 90° betragen, wie dies zweckmäßige Weiterbildungen vorsehen.In the aforementioned embodiment, the angle may be an acute angle or about 90 °, as appropriate expansions provide.

Eine andere vorteilhafte Weiterbildung der erfindungsgemäßen Lehre sieht vor, daß die Anlagefläche an der der Schwenkachse abgewandten Seite des Anlageteiles gebildet ist. Bei dieser Ausführungsform suchen die während der Verstellbewegung auf den Schwenkhebel wirkenden Kräfte die Schwenkwelle des Schwenkhebels in das Gehäuse des Möbelantriebs hineinzuziehen, so daß eine Verriegelungseinrichtung, die beispielsweise als Schließer ausgebildet sein kann und die Schwenkwelle an dem Gehäuse verriegelt, weitgehend entlastet ist. Auf diese Weise ist eine Beschädigung der Verriegelungseinrichtung zuverlässig verhindert.Another advantageous development of the teaching of the invention provides that the contact surface the pivot axis remote from the side of the system part is formed. In this embodiment, the forces acting on the pivot lever during the adjustment forces seek to draw the pivot shaft of the pivot lever in the housing of the furniture drive, so that a locking device, which may be formed, for example, as a closer and the pivot shaft is locked to the housing, largely relieved. In this way, damage to the locking device is reliably prevented.

Grundsätzlich kann der Schwenkhebel während der Verstellbewegung auf Druck beansprucht sein. Gemäß einer Weiterbildung ist der Schwenkhebel während der Verstellbwewegung jedoch auf Zug beansprucht. Auf diese Weise erfolgt eine Einleitung von Kräften in das Gehäuse des Möbelantriebs im wesentlichen nur in dem Bereich, in dem der Schwenkhebel angeordnet ist.In principle, the pivot lever can be subjected to pressure during the adjustment movement. According to one embodiment, however, the pivot lever during the adjustment movement is claimed to train. In this way, an introduction of forces into the housing of the furniture drive takes place substantially only in the region in which the pivot lever is arranged.

Die Erfindung wird nachfolgend anhand der beigefügten Zeichnung näher erläutert, in der Ausführungsbeispiele eines erfindungsgemäßen Möbelantriebs dargestellt sind.The invention will be explained in more detail with reference to the accompanying drawing, are shown in the embodiments of a furniture drive according to the invention.

Es zeigt:

Fig. 1
in stark schematisierter Seitenansicht ein erstes Ausführungsbeispiel, eines erfindungsgemäßen Möbelantriebs, wobei aus Gründen der Darstellung ein Teil des Gehäuses, in dem die Antriebseinheiten aufgenommen sind, weggelassen ist,
Fig. 2-4
in stark schematisierter, gegenüber Fig. 1 vergrößerter Darstellung eine Antriebseinheit des Möbelantriebs gemäß Fig. 1 in verschiedenen Verstellagen,
Fig. 5
in stark schematisierter Seitenansicht ein Ausführungsbeispiel einer Stützeinrichtung für eine Polsterung eines Sitz- und/oder Liegemöbels in Form eines Lattenrostes, der mit dem Möbelantrieb gemäß Fig. 1 versehen ist, in einer ersten Verstellage,
Fig. 6
die Stützeinrichtung gemäß Fig. 5 in einer zweiten Verstellage und
Fig. 7
eine Ansicht von links in Fig. 2 auf den Schwenkhebel und das Anlageteil, wobei das Gehäuse geschnitten dargestellt ist,
Fig. 8
in schematischer Perspektivdarstellung einen Teil eines zweiten Ausführungsbeispiels eines erfindungsgemäßen Möbelantriebs, wobei aus Gründen der Darstellung ein Teil des Gehäuses weggelassen ist,
Fig. 9
in gegenüber Fig. 8 kleinerem Maßstab das Ausführungsbeispiel gemäß Fig. 8 in einer ersten Verstellage und
Fig. 10
in gleicher Darstellung wie Fig. 9 das Ausführungsbeispiel gemäß Fig. 9 in einer zweiten Verstellage.
It shows:
Fig. 1
in a highly schematic side view of a first embodiment of a furniture drive according to the invention, wherein for the sake of illustration, a part of the housing in which the drive units are included, is omitted,
Fig. 2-4
in a highly schematic, compared to FIG. 1 enlarged representation of a drive unit of the furniture drive according to FIG. 1 in different adjustment positions,
Fig. 5
in a highly schematic side view an embodiment of a support means for upholstering a sitting and / or lying furniture in the form of a slatted frame, which is provided with the furniture drive according to FIG. 1, in a first Verstellage,
Fig. 6
the support device according to FIG. 5 in a second adjustment position and
Fig. 7
2 shows a view from the left in FIG. 2 of the pivot lever and the contact part, wherein the housing is shown cut,
Fig. 8
in a schematic perspective view of a part of a second embodiment of a furniture drive according to the invention, wherein for the sake of illustration a part of the housing is omitted,
Fig. 9
in comparison with FIG. 8 smaller scale, the embodiment of FIG. 8 in a first Verstellage and
Fig. 10
in the same representation as FIG. 9, the embodiment of FIG. 9 in a second adjustment position.

In den Figuren der Zeichnung sind gleiche bzw. sich entsprechende Bauteile mit den gleichen Bezugszeichen versehen.In the figures of the drawing, the same or corresponding components are provided with the same reference numerals.

In Fig. 1 ist ein Ausführungsbeispiel eines erfindungsgemäßen Möbelantriebs 2 dargestellt, der bei diesem Ausführungsbeispiel als Doppelantrieb ausgebildet ist und zwei Antriebseinheiten 4, 4' aufweist, die in einem gemeinsamen Gehäuse 6 aufgenommen und durch nicht dargestellte Befestigungsmittel an diesem gehalten sind. Nachfolgend wird nur die Antriebseinheit 4 näher erläutert. Die Antriebseinheit 4' ist entsprechend aufgebaut, und ihre Bauteile sind mit Bezugszeichen versehen, die den Bezugszeichen der Bauteile der Antriebseinheit 4 entsprechen.In Fig. 1, an embodiment of a furniture drive 2 according to the invention is shown, which is formed in this embodiment as a double drive and two drive units 4, 4 ', which are received in a common housing 6 and held by not shown fastening means on this. Subsequently, only the drive unit 4 is closer explained. The drive unit 4 'is constructed accordingly, and its components are provided with reference numerals corresponding to the reference numerals of the components of the drive unit 4.

Die Antriebseinheit 4 weist ein linear bewegliches Antriebselement auf, das bei diesem Ausführungsbeispiel durch eine in ihrer Axialrichtung in Richtung eines Doppelpfeiles 8 hin- und herbewegliche Stellspindel 10 gebildet ist, die bei diesem Ausführungsbeispiel als Gewindespindel ausgebildet ist. Auf der Stellspindel 10 ist eine ortsfeste, mit einem Innengewinde versehene Spindelmutter 12 angeordnet, die durch einen in der Zeichnung nur schematisch angedeuteten Elektromotor 14 und ein nicht näher dargestelltes Getriebe drehantreibbar ist.The drive unit 4 has a linearly movable drive element, which is formed in this embodiment by a in its axial direction in the direction of a double arrow 8 back and forth adjusting spindle 10 which is formed in this embodiment as a threaded spindle. On the adjusting spindle 10, a stationary, provided with an internal thread spindle nut 12 is arranged, which is rotatably driven by an in the drawing only schematically indicated electric motor 14 and a not-shown gear.

Die Stellspindel 14 steht in Montageposition des Möbelantriebs 2 mit einem um eine Schwenkachse 16 schwenkbar gelagerten Schwenkhebel 18 zum Verschwenken desselben in Wirkungsverbindung. Der Schwenkhebel 18 ist bei diesem Ausführungsbeispiel nicht Teil des Möbelantriebs 2, sondern Teil eines Verstellbeschlages einer in Fig. 1 nicht dargestellten Stützeinrichtung zum Abstützen einer Polsterung eines Sitz- und/oder Liegemöbels, beispielsweise eines Lattenrostes. Der Schwenkhebel 18 ist, wie in Fig. 1 dargestellt, in einer in dem Gehäuse 6 gebildeten Ausnehmung 20 aufgenommen und durch ein Verriegelungselement 22 derart in der Ausnehmung 20 verriegelt, das ein Verschwenken des Schwenkhebels 18 ermöglicht, gleichzeitig jedoch verhindert ist, daß sich der Schwenkhebel 18 aus der Ausnehmung 20 löst.The adjusting spindle 14 is in the mounting position of the furniture drive 2 with a pivotally mounted about a pivot axis 16 pivot lever 18 for pivoting the same in operative connection. The pivot lever 18 is not part of the furniture drive 2 in this embodiment, but part of a Verstellbeschlages a supporting device, not shown in Fig. 1 for supporting a padding of a seat and / or reclining furniture, such as a slatted frame. The pivot lever 18 is, as shown in Fig. 1, received in a recess formed in the housing 6 20 and locked by a locking element 22 in the recess 20, which allows pivoting of the pivot lever 18, but at the same time is prevented that the Swivel lever 18 from the recess 20 triggers.

Zum Verschwenken des Schwenkhebels 18 weist die Antriebseinheit 4 ein Anlageteil 24 auf, das mit dem dem Schwenkhebel 18 zugewandten Ende der Stellspindel 10 verbunden ist, wobei die Verbindung zwischen der Stellspindel 10 und dem Anlageteil 24 auf Zug und Druck beanspruchbar ist. An dem Anlageteil 24 ist erfindungsgemäß eine zur linearen Bewegungsachse der Stellspindel 10 geneigte, bei diesem Ausführungsbeispiel im wesentlichen ebene Anlagefläche 26 gebildet, der der Schwenkhebel 18 im Verlaufe der Verstellbewegung kontinuierlich anliegt und mit der der Schwenkhebel 18 nach Art eines Kurventriebs zusammenwirkt. Zur Bildung der geneigten Anlagefläche 26 ist das Anlageteil 24 bei diesem Ausführungsbeispiel an seiner der Schwenkachse 16 zugewandten Oberseite rampenförmig als geneigte Ebene ausgebildet, wie dies aus Fig. 1 ersichtlich ist. Bei diesem Ausführungsbeispiel ist die Anlagefläche 26 relativ zur linearen Bewegungsachse 30 der Stellspindel 10 unter einem spitzen Winkel von etwa 18° geneigt. Die Neigung der Anlagefläche 26 relativ zu der Bewegungsachse 30 ist jedoch entsprechend den jeweiligen Anforderungen in weiten Grenzen wählbar.For pivoting the pivot lever 18, the drive unit 4 on a system part 24, which with the pivot lever 18 facing the end of the adjusting spindle 10 is connected, wherein the connection between the adjusting spindle 10 and the system part 24 is subjected to tension and pressure. At the plant part 24 according to the invention a to the linear axis of movement of the adjusting spindle 10 inclined, formed in this embodiment, substantially planar contact surface 26 which abuts the pivot lever 18 in the course of the adjustment continuously and cooperates with the pivot lever 18 in the manner of a cam drive. To form the inclined abutment surface 26, the abutment part 24 is formed in this embodiment at its the pivot axis 16 facing top ramp-shaped as an inclined plane, as shown in FIG. 1 can be seen. In this embodiment, the abutment surface 26 is inclined relative to the linear movement axis 30 of the adjusting spindle 10 at an acute angle of about 18 °. However, the inclination of the contact surface 26 relative to the movement axis 30 can be selected within wide limits in accordance with the respective requirements.

Die Funktionsweise des erfindungsgemäßen Möbelantriebs 2 wird nachfolgend anhand der Figuren 2 bis 4 näher erläutert.The operation of the furniture drive 2 according to the invention will be explained in more detail with reference to FIGS 2 to 4.

Fig. 2 zeigt die Antriebseinheit 4 in vergrößerter Darstellung in einer ersten Endlage der Verstellbewegung, in der der Schwenkhebel 18 noch nicht an der Anlagefläche 26 des Anlageteiles 24 anliegt. Diese erste Endlage entspricht einer Position, in der die mittels des Möbelantriebs 2 verstellbaren Teile eines Möbels relativ zueinander nicht verstellt sind.Fig. 2 shows the drive unit 4 in an enlarged view in a first end position of the adjusting movement, in which the pivot lever 18 is not yet applied to the contact surface 26 of the system part 24. This first end position corresponds to a position in which the adjustable by means of the furniture drive 2 parts of a piece of furniture are not adjusted relative to each other.

Zur Anlage an der Anlagefläche 26 weist der Schwenkhebel 18, der bei diesem Ausführungsbeispiel als einarmiger Hebel ausgebildet ist, an seinem Ende, also exzentrisch zu der Schwenkachse 16, eine drehbar gelagerte Rolle 28 auf, die weiter unten anhand von Fig. 7 näher erläutert wird. Die lineare Bewegungsachse der Stellspindel 10 ist in Fig. 2 durch eine strichpunktierte Linie 29 symbolisiert.For abutment with the abutment surface 26, the pivot lever 18, which is formed in this embodiment as a one-armed lever at its end, that is eccentric to the pivot axis 16, a rotatably mounted roller 28, the below with reference to FIG .. 7 is explained in more detail. The linear movement axis of the adjusting spindle 10 is symbolized in FIG. 2 by a dot-dash line 29.

Zum Verschwenken des Schwenkhebels 18 und damit zum Verstellen eines mit dem Schwenkhebel 18 in Wirkungsverbindung stehenden, in Fig. 2 nicht dargestellten Teiles eines Möbels wird die Spindelmutter 12 durch den Elektromotor 14 derart drehangetrieben, daß sich die Stellspindel 10 in Richtung eines Pfeiles 30 in Fig. 2 nach links bewegt. Die Ansteuerung des Elektromotors 14 sowie eines in Fig. 2 nicht erkennbaren Elektromotors 14' der Antriebseinheit 4' erfolgt durch eine in der Zeichnung nicht dargestellte Steuereinrichtung, durch die die Antriebseinheiten 4, 4' zusammen oder getrennt voneinander ansteuerbar sind. Die Spannungsversorgung der Antriebseinheiten 4, 4' erfolgt durch eine in der Zeichnung ebenfalls nicht dargestellte Spannungsversorgungseinrichtung.For pivoting the pivot lever 18 and thus for adjusting a standing with the pivot lever 18 in operative connection, not shown in FIG. 2 part of a furniture, the spindle nut 12 is rotated by the electric motor 14 so that the adjusting spindle 10 in the direction of arrow 30 in FIG 2 moves to the left. The control of the electric motor 14 and a not visible in Fig. 2 electric motor 14 'of the drive unit 4' is effected by a control device not shown in the drawing, by which the drive units 4, 4 'together or separately controlled. The power supply of the drive units 4, 4 'is effected by a voltage supply device, also not shown in the drawing.

Bei Bewegung der Stellspindel 10 mit dem Anlageteil 24 in Fig. 2 nach links gelangt der Schwenkhebel 18 mit seiner Rolle 28 zunächst an der Anlagefläche 26 zur Anlage und läuft daran anschließend auf die als geneigte Ebene ausgebildete Anlagefläche 26 des Anlageteiles 24 auf und verschwenkt hierbei, wie dies in Fig. 3 dargestellt ist. Hierbei rollt die Rolle 28 des Schwenkhebels 18 auf der Anlagefläche 26 ab, so daß nur eine geringe Reibung auftritt und ein Verschleiß der Anlagefläche 26 vermieden ist.Upon movement of the adjusting spindle 10 with the contact part 24 in Fig. 2 to the left, the pivot lever 18 comes with its roller 28 first to the contact surface 26 to the plant and then runs on the inclined surface formed as an abutment surface 26 of the system part 24 and pivots this, as shown in Fig. 3. Here, the roller 28 of the pivot lever 18 rolls on the contact surface 26, so that only a small friction occurs and wear of the contact surface 26 is avoided.

Beim Verschwenken verstellt der Schwenkhebel 18 ein in den Figuren 1 bis 4 nicht dargestelltes Teil eines Möbels, mit dem der Schwenkhebel 18 in geeigneter Weise in Wirkungsverbindung steht.When pivoting the pivot lever 18 adjusts a not shown in Figures 1 to 4 part of a piece of furniture with which the pivot lever 18 is suitably in operative connection.

Während der Verstellbewegung stützt sich das Anlageteil 24 an einer in den Fig. 2 bis 4 nicht dargestellten Führung des Gehäuses 6 ab, so daß ein senkrecht zur Bewegungsachse 29 der Stellspindel 10 wirkender Teil der Reaktionskraft des Schwenkhebels 18 von dem Gehäuse 6 aufgenommen und somit nicht in die Stellspindel 10 eingeleitet wird.During the adjusting movement, the contact part 24 is supported on a not shown in FIGS. 2 to 4 Guide the housing 6 from, so that a perpendicular to the axis of movement 29 of the adjusting spindle 10 acting part of the reaction force of the pivot lever 18 is received by the housing 6 and thus not introduced into the adjusting spindle 10.

Fig. 4 stellt die andere Endlage der Verstellbewegung dar, die einer maximalen Verstellung des zu verstellenden Teils des nicht dargestellten Möbels entspricht. In dieser Endlage stützt sich der Schwenkhebel 18 an einem ebenen Stützabschnitt 32 der Anlagefläche 26 ab. Der Stützabschnitt 32 ist nicht geneigt und verläuft bei dem Ausführungsbeispiel im wesentlichen horizontal. Er liegt in einer Ebene, die zu einer Stützebene, in der sich das Anlageteil 24 an der in den Fig. 2 bis 4 nicht dargestellten Führung an dem Gehäuse 6 abstützt, im wesentlichen parallel ist. Auf diese Weise hat die von dem Schwenkhebel 18 in das Anlageteil 24 eingeleitete Reaktionskraft in dieser Verstellage im wesentlichen nur noch eine senkrecht zur Bewegungsachse 29 wirkende Komponente, so daß auch bei einer hohen Belastung des in Fig. 4 nicht dargestellten Teils des Möbels praktisch keine Biegemomente in die Stellspindel 10 eingeleitet werden. Es wirken damit praktisch keine Kräfte auf die Bauteile des Möbelantriebs 2, die das Anlageteil 24 entgegen der Richtung des Pfeiles 30 zu bewegen suchen. Die über den Schwenkhebel 18 in das Anlageteil 24 eingeleiteten Kräfte werden von diesem vielmehr praktisch vollständig in das Gehäuse 6 eingeleitet.Fig. 4 illustrates the other end position of the adjustment, which corresponds to a maximum adjustment of the part to be adjusted of the furniture, not shown. In this end position, the pivot lever 18 is supported on a flat support portion 32 of the abutment surface 26. The support portion 32 is not inclined and extends in the embodiment substantially horizontally. It lies in a plane which is essentially parallel to a support plane in which the contact part 24 is supported on the housing 6 on the guide not shown in FIGS. 2 to 4. In this way, the initiated by the pivot lever 18 in the system part 24 reaction force in this adjustment substantially only one perpendicular to the movement axis 29 acting component, so that even at a high load of the part of the furniture, not shown in FIG. 4, virtually no bending moments be introduced into the adjusting spindle 10. It thus act virtually no forces on the components of the furniture drive 2, which seek to move the system part 24 against the direction of the arrow 30. The introduced via the pivot lever 18 in the system part 24 forces are initiated by this almost completely in the housing 6.

In Fig. 5 ist eine mit dem Möbelantrieb 2 versehene Stützeinrichtung zum Abstützen einer Polsterung eines Sitz- und/oder Liegemöbels dargestellt, die bei diesem Ausführungsbeispiel durch einen Lattenrost 34 gebildet ist. Der Lattenrost 34 weist einen Rahmen 35 sowie mehrere gelenkig miteinander verbundene Stützteile auf. Im einzelnen weist der Lattenrost 34 ein mittleres Stützteil 36 auf, mit dessen einer Seite gelenkig und um eine horizontale Schwenkachse verschwenkbar ein Oberkörperstützteil 38 verbunden ist, mit dessen dem mittleren Stützteil 36 abgewandter Seite gelenkig und um eine horizontale Schwenkachse verschwenkbar ein Kopfstützteil 40 verbunden ist. Mit der dem Oberkörperstützteil 38 abgewandten Seite des mittleren Stützteils 36 ist gelenkig und um eine horizontale Schwenkachse verschwenkbar ein Beinstützteil bzw. Oberschenkelstützteil 42 verbunden, mit dessen dem mittleren Stützteil 36 abgewandter Seite gelenkig und um eine horizontale Schwenkachse verschwenkbar ein Wadenstützteil 44 verbunden ist.In Fig. 5 is provided with the furniture drive 2 support means for supporting a padding of a seat and / or reclining furniture is shown, which is formed in this embodiment by a slatted frame 34. The slatted frame 34 has a frame 35 and a plurality of hingedly connected support parts. In detail, the slatted frame 34 has a central support member 36, one side of which pivotally and pivotally about a horizontal pivot axis, an upper body support member 38 is connected to the middle support member 36 side facing pivotally and pivotable about a horizontal pivot axis, a head support member 40 is connected. With the side facing away from the upper body support member 38 of the central support member 36 pivotally and about a horizontal pivot axis, a leg support member or thigh support member 42 is connected to the middle support member 36 side facing pivotally and about a horizontal pivot axis pivotally a calf support member 44 is connected.

Zum Verstellen des Beinstützteiles 42 und des Wadenstützteiles 44 relativ zu dem mittleren Stützteil 36 ist ein verschwenkbarer Verstellhebel 46 vorgesehen, der drehfest mit einer Schwenkwelle 48 verbunden ist, mit der auch der Schwenkhebel 18 drehfest verbunden ist. Der Verstellhebel 46 ist somit zusammen mit dem Schwenkhebel 18 um dessen Schwenkachse 16 verschwenkbar.For adjusting the leg support member 42 and the calf support member 44 relative to the central support member 36, a pivotable adjusting lever 46 is provided which is rotatably connected to a pivot shaft 48, with which the pivot lever 18 is rotatably connected. The adjusting lever 46 is thus pivotable about the pivot axis 16 together with the pivot lever 18.

Zum Verstellen des Oberkörperstützteiles 38 und des Kopfstützteiles 40 relativ zu dem mittleren Stützteil 36 ist ein weiterer Verstellhebel 50 vorgesehen, der drehfest mit einer weiteren Schwenkwelle 52 verbunden ist, mit der auch der der Antriebseinheit 4' zugeordnete Schwenkhebel 18' drehfest verbunden ist. Der weitere Verstellhebel 50 ist somit zusammen mit dem Schwenkhebel 18' um dessen Schwenkachse 16' verschwenkbar.For adjusting the upper body support member 38 and the head support member 40 relative to the central support member 36, a further adjusting lever 50 is provided which is non-rotatably connected to a further pivot shaft 52, with which also the drive unit 4 'associated pivot lever 18' is rotatably connected. The further adjusting lever 50 is thus pivotable together with the pivot lever 18 'about its pivot axis 16'.

Mit dem dem Schwenkhebel 18' abgewandten Ende 54 des Verstellhebels 50 ist gelenkig ein Ende 56 eines Anlenkhebels 58 verbunden, dessen anderes Ende 60 gelenkig mit dem Kopfstützteil 40 verbunden ist.With the pivot lever 18 'remote from the end 54 of the adjusting lever 50 is an end 56 of a hinged Anlenkhebels 58 connected, the other end 60 is pivotally connected to the headrest part 40.

Fig. 5 zeigt den Lattenrost 34 in einer Lage, in der die Stützteile 36, 38, 40, 42 relativ zueinander nicht verstellt sind. Zum Verstellen des Beinstützteiles 42 und des Wadenstützteiles 44 relativ zu dem mittleren Stützteil 26 treibt der Elektromotor 14 die Spindelmutter 12 derart an, daß sich die Stellspindel 10 mit dem Anlageteil 24 in Fig. 5 nach links bewegt, so daß der Schwenkhebel 18 auf die Anlagefläche 26 aufläuft und hierbei um seine Schwenkachse 16 verschwenkt. Hierbei verschwenkt dementsprechend der Verstellhebel 46 und verstellt das Wadenstützteil 44 zusammen mit dem Beinstützteil 42, bis die in Fig. 6 dargestellte Endlage der Verstellbewegung erreicht ist.Fig. 5 shows the slatted frame 34 in a position in which the support members 36, 38, 40, 42 are not adjusted relative to each other. To adjust the leg support member 42 and the calf support member 44 relative to the central support member 26 drives the electric motor 14, the spindle nut 12 such that the adjusting spindle 10 moves with the contact part 24 in Fig. 5 to the left, so that the pivot lever 18 on the contact surface 26 runs up and pivoted about its pivot axis 16. Accordingly, the adjusting lever 46 pivots and adjusts the calf support part 44 together with the leg support part 42 until the end position of the adjusting movement shown in FIG. 6 is reached.

In entsprechender Weise treibt zum Verstellen des Oberkörperstützteiles 38 und des Kopfstützteiles 34 relativ zu dem mittleren Stützteil 36 der Elektromotor 14' der Antriebseinheit 4' die Spindelmutter 12' derart an, daß sich die Stellspindel 10' mit dem Anlageteil 24' in Fig. 5 nach rechts bewegt. Hierbei läuft der Schwenkhebel 18' auf die Anlagefläche 26' des Anlageteils 24' auf und verschwenkt, so daß auch der weitere Verstellhebel 50 verschwenkt und das Oberkörperstützteil 38 und das Kopfstützteil 40 verstellt, bis die in Fig. 6 dargestellte Endlage der Verstellbewegung erreicht ist.In a corresponding manner drives to adjust the upper body support member 38 and the head support member 34 relative to the central support member 36 of the electric motor 14 'of the drive unit 4', the spindle nut 12 'such that the adjusting spindle 10' with the system part 24 'in Fig. 5 after moved to the right. In this case, the pivot lever 18 'runs on the contact surface 26' of the contact part 24 'and pivoted, so that the other adjustment lever 50 is pivoted and the upper body support member 38 and the head support member 40 moves until the end position shown in Fig. 6 of the adjustment is reached.

Zur Rückstellung in die in Fig. 5 dargestellte Verstellage treibt der Elektromotor 14 die Spindelmutter 12 derart an, daß sich die Stellspindel 10 zusammen mit dem Anlageteil 24 in Fig. 5 nach rechts bewegt. Die Rückstellung des Oberkörperstützteils 38 und des Kopfstützteils 40 erfolgt in entsprechender Weise.For returning to the adjustment position shown in Fig. 5, the electric motor 14 drives the spindle nut 12 such that the adjusting spindle 10 moves together with the contact part 24 in Fig. 5 to the right. The provision of the upper body support member 38 and the head support member 40 is carried out in a corresponding manner.

Der erfindungsgemäße Möbelantrieb 2 ist einfach und kostengünstig im Aufbau sowie robust. Aufgrund der Ausnutzung des Wirkungsprinzips einer geneigten Ebene können die Schwenkhebel 18, 18' relativ kurz ausgebildet sein, so daß sich ein kompakter Aufbau mit geringer Bauhöhe ergibt. Wie aus den Figuren 5 und 6 ersichtlich ist, steht der erfindungsgemäße Möbelantrieb 2 aufgrund dieser geringen Bauhöhe nicht über den Rahmen 35 des Lattenrostes 34 hervor.The furniture drive 2 according to the invention is simple and cost-effective in construction as well as robust. Due to the utilization of the principle of action of an inclined plane, the pivot lever 18, 18 'may be formed relatively short, so that there is a compact structure with low overall height. As can be seen from FIGS. 5 and 6, the furniture drive 2 according to the invention does not protrude beyond the frame 35 of the slatted frame 34 due to this low overall height.

Zur Montage des Möbelantriebs 2 an dem Lattenrost 34 wird das Gehäuse 6 von unten an den Lattenrost 34 angesetzt, so daß die Schwenkhebel 18, 18' des Lattenrostes in die Ausnehmungen 20, 20' des Gehäuses 6 eingreifen. Daran anschließend werden die Verriegelungselemente 22, 22' montiert, so daß verhindert ist, daß sich der Möbelantrieb 2 von dem Lattenrost 34 löst.For mounting the furniture drive 2 on the slatted frame 34, the housing 6 is attached from below to the slatted base 34, so that the pivot lever 18, 18 'of the slatted frame in the recesses 20, 20' of the housing 6 engage. Subsequently, the locking elements 22, 22 'mounted so that it is prevented that the furniture drive 2 dissolves from the slatted frame 34.

Fig. 7 stellt schematisch eine Ansicht von links in Fig. 2 auf den Schwenkhebel 18 und das Anlageteil dar, wobei das Gehäuse 6 geschnitten dargestellt ist. Aus dieser Figur ist ersichtlich, daß der Schwenkhebel 18 zwei zueinander parallele Arme 62, 64 aufweist, zwischen denen die Rolle 28 drehbar gelagert gehalten ist. Die Arme 62, 64 sind drehfest mit der Schwenkwelle 48 verbunden. Wie weiterhin aus Fig. 7 ersichtlich, ist das Verriegelungselement 22 plattenförmig ausgebildet.Fig. 7 shows schematically a view from the left in Fig. 2 on the pivot lever 18 and the plant part, wherein the housing 6 is shown in section. From this figure it can be seen that the pivot lever 18 has two mutually parallel arms 62, 64, between which the roller 28 is rotatably supported. The arms 62, 64 are rotatably connected to the pivot shaft 48. As further shown in Fig. 7, the locking element 22 is plate-shaped.

Aus Fig. 7 ist ferner ersichtlich, daß sich das Anlageteil 24 an schienenartigen Führungen 66, 68 in einer Stützebene abstützt, die in Fig. 7 durch eine strichpunktierte Linie 70 symbolisiert ist. Der Stützabschnitt 32 des Anlageteiles 26 liegt in einer Ebene, die zu der Stützebene 70 parallel ist.From Fig. 7 it is further apparent that the abutment member 24 is supported on rail-like guides 66, 68 in a support plane, which is symbolized in Fig. 7 by a dashed line 70. The support portion 32 of the abutment member 26 lies in a plane which is parallel to the support plane 70.

In Fig. 8 ist ein zweites Ausführungsbeispiel eines erfindungsgemäßen Möbelantriebs 2 dargestellt, das sich von dem Ausführungsbeispiel gemäß Fig. 1 zunächst dadurch unterscheidet, daß das linear bewegliche Antriebselement der Antriebseinheit 4 durch die Spindelmutter 12 gebildet ist, die verdrehsicher und in Axialrichtung der Stellspindel 10 beweglich auf dieser angeordnet ist. Die Stellspindel 10 ist drehbar gelagert und steht über ein Getriebe 72 mit dem Elektromotor 14 in Drehantriebsverbindung.In Fig. 8, a second embodiment of a furniture drive 2 according to the invention is shown, which initially differs from the embodiment of FIG. 1 in that the linearly movable drive element the drive unit 4 is formed by the spindle nut 12, which is arranged against rotation and movable in the axial direction of the adjusting spindle 10 on this. The adjusting spindle 10 is rotatably mounted and is connected via a gear 72 with the electric motor 14 in rotary drive connection.

Die Spindelmutter 10 bildet bei diesem Ausführungsbeispiel das Anlageteil, an dem die Anlagefläche 26 gebildet ist, in der eine Ausnehmung 74 gebildet ist, durch die sich die Stellspindel 10 erstreckt. Im Gegensatz zu dem Ausführungsbeispiel gemäß Fig. 1, bei dem die Anlagefläche 26 an der der Schwenkachse 16 zugewandten Seite des Anlageteiles gebildet ist, ist bei dem Ausführungsbeispiel gemäß Fig. 8 die Anlagefläche 26 an der der Schwenkachse 16 abgewandten Seite, also der Unterseite des Anlageteiles gebildet.The spindle nut 10 forms in this embodiment, the contact part on which the contact surface 26 is formed, in which a recess 74 is formed, through which the adjusting spindle 10 extends. In contrast to the embodiment according to FIG. 1, in which the abutment surface 26 is formed on the side of the abutment part facing the pivot axis 16, in the embodiment according to FIG. 8 the abutment surface 26 is on the side facing away from the pivot axis 16, ie the underside of the abutment Plant parts formed.

Der Schwenkhebel 18 ist bei diesem Ausführungsbeispiel ebenfalls als einarmiger Hebel ausgebildet, wobei ein zu der Schwenkachse 16 benachbart angeordneter Teil 76 des Hebelarmes 78 mit einem zu dem freien Ende des Hebelarmes 78 benachbart angeordneten Teil 80 des Hebelarmes 78 einen Winkel bildet, der bei diesem Ausführungsbeispiel etwa 90° beträgt, derart, daß der Hebelarm 78 abgewinkelt ausgebildet ist.The pivot lever 18 is also formed in this embodiment as a one-armed lever, wherein an adjacent to the pivot axis 16 arranged part 76 of the lever arm 78 with an adjacent to the free end of the lever arm 78 disposed portion 80 of the lever arm 78 forms an angle in this embodiment is about 90 °, such that the lever arm 78 is formed angled.

Wie aus Fig. 8 ersichtlich, weist der Schwenkhebel 18 zusätzlich zu dem Hebelarm 78 einen weiteren Hebelarm 82 auf, der zu dem Hebelarm 78 parallel angeordnet ist, wobei die Stellspindel 10 in Richtung der Schwenkachse 16 zwischen den Hebelarmen 78, 82 aufgenommen ist. Grundsätzlich ist ein einziger Hebelarm ausreichend. Durch die beiden zur Längsmittelebene des Schwenkhebels 18 symmetrisch angeordneten Hebelarme 78, 82 ist jedoch gewährleistet, daß die von der Spindelmutter 12 auf den Schwenkhebel 18 übertragenen Kräfte gleichmäßig in diesen eingeleitet werden, so daß Verspannungen vermieden sind.As can be seen from FIG. 8, the pivoting lever 18 has, in addition to the lever arm 78, a further lever arm 82 which is arranged parallel to the lever arm 78, wherein the adjusting spindle 10 is received in the direction of the pivot axis 16 between the lever arms 78, 82. Basically, a single lever arm is sufficient. By the two to the longitudinal center plane of the pivot lever 18 symmetrically arranged lever arms 78, 82, however, ensures that the transmitted from the spindle nut 12 to the pivot lever 18 forces be introduced uniformly in these, so that tensions are avoided.

Die Fig. 9 und 10 stellen die Antriebseinheit 4 in den Endlagen der Verstellbewegung dar, wobei ersichtlich ist, daß der Schwenkhebel 18 bei dem Ausführungsbeispiel gemäß Fig. 8 während der Verstellbewegung auf Zug beansprucht ist, während er bei dem Ausführungsbeispiel gemäß Fig. 1 auf Druck beansprucht ist. Auf diese Weise nimmt das in den Figuren 8 bis 10 nicht dargestellte, zwischen den Antriebseinheiten angeordnete Mittelteil des Gehäuses 6 während der Verstellbewegung keine großen Kräfte auf, so daß dieser Teil des Gehäuses 6 beispielsweise zur Aufnahme einer Steuerplatine des Möbelantriebs genutzt werden kann.9 and 10 represent the drive unit 4 in the end positions of the adjustment, wherein it is seen that the pivot lever 18 is claimed in the embodiment of FIG. 8 during the adjustment to train, while in the embodiment of FIG Pressure is claimed. In this way, the not shown in Figures 8 to 10, arranged between the drive units central part of the housing 6 during the adjustment no large forces, so that this part of the housing 6 can be used for example for receiving a control board of the furniture drive.

Aufgrund der Ausbildung des Schwenkhebels 18 als abgewinkelter Hebel sowie der Anordnung der Anlagefläche 26 an der der Schwenkachse 18 abgewandten Seite der Spindelmutter 12 weist das Ausführungsbeispiel gemäß Fig. 8 eine besonders geringe Bauhöhe auf.Due to the design of the pivot lever 18 as an angled lever and the arrangement of the contact surface 26 on the side remote from the pivot axis 18 side of the spindle nut 12, the embodiment of FIG. 8 has a particularly low overall height.

Darüber hinaus suchen die während der Verstellbewegung auf den Schwenkhebel 18 wirkenden Kräfte die Schwenkwelle des Schwenkhebels 18 in das Gehäuse 6 hineinzuziehen. Auf diese Weise ist die Verriegelungseinrichtung 22, die beispielsweise als Schließer ausgebildet sein kann, weitgehend entlastet. Eine Beschädigung der Verriegelungseinrichtung 22 ist damit zuverlässig verhindert.In addition, the forces acting on the pivoting lever 18 during the adjusting movement seek to draw the pivoting shaft of the pivoting lever 18 into the housing 6. In this way, the locking device 22, which may be formed, for example, as NO, largely relieved. Damage to the locking device 22 is thus reliably prevented.

Claims (23)

  1. Furniture drive (2) in the form of a dual drive for adjusting parts of a piece of furniture relative to one another, with two drive units (4, 4'), each drive unit (4, 4') exhibiting a linearly movable drive element (10) for swivelling a swivel lever (18) in operative connection with a part of a piece of furniture to be adjusted in the assembly position,
    characterised in that
    the linearly movable drive element (10) or a bearing part (24) connected to the latter exhibits an abutment surface (26) which is inclined relative to the movement axis (29) of the drive element (10) for supporting the swivel lever (18) remote from its swivel axis (16) in the assembly position of the furniture drive (2).
  2. Furniture drive according to claim 1, characterised in that the part on which the abutment surface (26) is formed is essentially wedge-shaped or ramp-shaped.
  3. Furniture drive according to claim 1, characterised in that the abutment surface (26) is an essentially flat surface.
  4. Furniture drive according to claim 3, characterised in that the abutment surface (26) forms an acute angle, in particular an angle of less than about 45°, with the linear movement axis (29) of the drive element (10).
  5. Furniture drive according to claim 1, characterised in that the abutment surface (26) is arcuate in cross-section.
  6. Furniture drive according to claim 5, characterised in that an imaginary connecting line between the end points of the arcuate cross-section of the abutment surface (26) forms an acute angle, in particular an angle of less than about 45°, with the linear movement axis (29) of the drive element (10).
  7. Furniture drive according to claim 6, characterised in that the abutment surface (26) is concave in cross-section in relation to the swivel lever (18).
  8. Furniture drive according to claim 5, characterised in that the abutment surface (26) is convex in cross-section in relation to the swivel lever (18).
  9. Furniture drive according to claim 1, characterised in that the swivel lever (18) rests on the abutment surface (26) with a rotatably mounted roller (29) in the assembly position of the furniture drive (2).
  10. Furniture drive according to claim 1, characterised in that the part on which the abutment surface (26) is formed is made of plastic.
  11. Furniture drive according to claim 1, characterised in that the part on which the abutment surface (26) is formed is supported on a housing (6) of the furniture drive (2) or a part connected to the housing (6) during the adjusting movement.
  12. Furniture drive according to claim 11, characterised in that the abutment surface (26) exhibits a supporting portion (32) on which the swivel lever (18) is supported in one end position of the adjusting movement such that forces directed from the adjusting lever (18) into the part in which the abutment surface (26) is formed essentially act perpendicularly to the movement axis (29) of the drive element (10).
  13. Furniture drive according to claim 1, characterised in that the linearly movable drive element is a spindle nut retained on a rotationally driveable adjusting spindle so as to be unable to turn but able to move in the axial direction.
  14. Furniture drive according to claim 1, characterised in that the linearly movable drive element is an adjusting spindle (10) which is able to move in its axial direction and on which a stationary rotationally driveable spindle nut (12) is arranged.
  15. Furniture drive according to claim 1, characterised in that in the assembly position of the furniture drive (2) the swivel lever (18) is connected so that it cannot turn to a rotationally mounted shaft which is in operative connection with a part of the piece of furniture to be adjusted.
  16. Furniture drive according to claim 1, characterised in that each drive unit (4, 4') exhibits an electric motor.
  17. Furniture drive according to claim 1, characterised in that the drive units (4, 4') of the dual drive are accommodated in a common housing.
  18. Furniture drive according to claim 1, characterised in that the swivel level (18) is a one-armed lever.
  19. Furniture drive according to claim 18, characterised in that a part (76) of the lever arm (78) of the swivel lever (18) neighbouring the swivel axis (16) of the swivel lever (18) forms an angle with a part (80) of the lever arm (78) neighbouring the free end of the lever arm (78) such that the swivel lever (18) is angled or bent.
  20. Furniture drive according to claim 19, characterised in that the angle is an acute angle.
  21. Furniture drive according to claim 19, characterised in that the angle is approximately 90°.
  22. Furniture drive according to claim 1, characterised in that the abutment surface (26) is formed on the side of the bearing part (24) remote from the swivel axis (16).
  23. Furniture drive according to claim 1, characterised in that the swivel lever (18) is under tensile load during the adjusting movement.
EP01974265A 2000-09-21 2001-09-19 Furniture drive in the form of a dual drive Revoked EP1318738B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10046752 2000-09-21
DE2000146752 DE10046752C1 (en) 2000-09-21 2000-09-21 Double drive for furniture adjustment has support face for actuator lower than pivot axis, to support pivot lever
DE20106189U 2001-04-09
DE20106189U DE20106189U1 (en) 2000-09-21 2001-04-09 Furniture drive designed as a double drive
PCT/EP2001/010815 WO2002024034A1 (en) 2000-09-21 2001-09-19 Furniture drive in the form of a dual drive

Publications (2)

Publication Number Publication Date
EP1318738A1 EP1318738A1 (en) 2003-06-18
EP1318738B1 true EP1318738B1 (en) 2006-02-22

Family

ID=26007126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01974265A Revoked EP1318738B1 (en) 2000-09-21 2001-09-19 Furniture drive in the form of a dual drive

Country Status (10)

Country Link
US (1) US6945131B2 (en)
EP (1) EP1318738B1 (en)
JP (1) JP3881623B2 (en)
CN (1) CN100496338C (en)
AT (1) ATE318089T1 (en)
AU (1) AU2001293822A1 (en)
DE (2) DE50109014D1 (en)
DK (1) DK1318738T3 (en)
ES (1) ES2258552T3 (en)
WO (1) WO2002024034A1 (en)

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DE20211071U1 (en) 2002-07-22 2003-12-11 Dewert Antriebs- Und Systemtechnik Gmbh & Co Kg Lying unit
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EP1708595B1 (en) * 2003-01-15 2008-03-26 Deon AG Drive for furniture for adjusting a first furniture part in relation to a second part
FR2871671A1 (en) * 2004-06-21 2005-12-23 Le Bed Sas Positioning block for bed structure, has positioning unit cooperating with levers for maintaining them in raised position, and rigid support carrying positioning unit and mounted on transversal motor bars through assembly unit
DE102004038457C5 (en) * 2004-08-07 2008-07-24 Johnson Controls Gmbh Transmission device, in particular for a seat adjuster of a motor vehicle, and Rastversteller for a vehicle seat
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Also Published As

Publication number Publication date
US6945131B2 (en) 2005-09-20
CN1461194A (en) 2003-12-10
EP1318738A1 (en) 2003-06-18
DK1318738T3 (en) 2006-07-03
DE50109014D1 (en) 2006-04-27
US20030172756A1 (en) 2003-09-18
ATE318089T1 (en) 2006-03-15
ES2258552T3 (en) 2006-09-01
WO2002024034A1 (en) 2002-03-28
DE10193929D2 (en) 2003-10-23
JP2004508865A (en) 2004-03-25
CN100496338C (en) 2009-06-10
AU2001293822A1 (en) 2002-04-02
JP3881623B2 (en) 2007-02-14

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