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EP2418982B1 - Support device adjustable by an electric motor - Google Patents

Support device adjustable by an electric motor Download PDF

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Publication number
EP2418982B1
EP2418982B1 EP10716282A EP10716282A EP2418982B1 EP 2418982 B1 EP2418982 B1 EP 2418982B1 EP 10716282 A EP10716282 A EP 10716282A EP 10716282 A EP10716282 A EP 10716282A EP 2418982 B1 EP2418982 B1 EP 2418982B1
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EP
European Patent Office
Prior art keywords
adjusting
electric motor
support device
support
connecting shaft
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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.)
Active
Application number
EP10716282A
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German (de)
French (fr)
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EP2418982A1 (en
Inventor
Eckhart Dewert
Jörg HENLE
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Bionical Systems AG
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Bionical Systems AG
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Publication date
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Publication of EP2418982A1 publication Critical patent/EP2418982A1/en
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Publication of EP2418982B1 publication Critical patent/EP2418982B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
    • A47C20/08—Head -, foot -, or like rests for beds, sofas or the like with means for adjusting two or more rests simultaneously
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
    • A47C20/04—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/041—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination by electric motors

Definitions

  • the invention relates to an electromotive adjustable support means referred to in the preamble of claim 1 for supporting a padding of a seat and / or reclining furniture, in particular a mattress of a bed.
  • Such support means for upholstery of seating and / or reclining furniture are well known, for example in the form of slatted frames, for example, by EP 0 372 032 B2 .
  • DE 199 62 541 C3 and DE 100 46 751 A1 are well known, for example in the form of slatted frames, for example, by EP 0 372 032 B2 .
  • DE 199 62 541 C3 and DE 100 46 751 A1
  • an electromotive adjustable support means of the type in question for supporting a padding of a seat and / or reclining furniture, in particular a mattress of a bed which has a base body having a first support member which is adjustable relative to a second support member, in particular pivotable.
  • the known support means further comprises an electromotive adjustment, which is in operative connection with the first support member for adjusting the same.
  • the adjusting device on a first and a second adjusting unit, which are arranged on opposite longitudinal sides of the base body, wherein a rotatably mounted component of the first adjustment unit via a connecting shaft substantially rotatably with a similar component of the second adjustment unit is connected and wherein the adjusting units associated with a common electric motor.
  • a connecting shaft substantially non-rotatably interconnected components is in the known from the document support means to pivot shafts, the same are in operative connection with the first support member for pivoting.
  • the support device known from the document is in this case designed such that an adjusting unit is associated with an electric motor whose drive torque is transmitted via the connecting shaft to the second adjusting unit.
  • the respectively converted by a spindle drive in an adjusting drive torque of the electric motor is thus introduced via the first adjustment on the one hand and the second adjustment on the other hand in opposite longitudinal sides of a first support member, so that both adjustment units are mechanically zwangsssynchroninstrument together. In this way it is avoided that raise the longitudinal sides of the support member at an adjustment to varying degrees, which could lead to a distortion of the first support member.
  • the invention has for its object to provide an electric motor adjustable support means referred to in the preamble of claim 1 for supporting a padding of a seat and / or reclining furniture, in particular a mattress of a bed, whose structure is simplified and thus designed more cost-effective.
  • the invention is based on the finding that the connecting shaft in the known support means subjected to a considerable torsional moment. In order to avoid unwanted torsion, which could result in the longitudinal sides of the first support member being raised to varying degrees during the adjustment, it is necessary in the known support means to use a connecting shaft of large cross-section.
  • the invention is based on the idea to connect via the connecting shaft rotatably mounted components of the adjusting essentially non-rotatably with each other, each of which is an input-side gear element of a reduction gear. While in the known support means the non-rotatable coupling of the rotatably mounted components to each other at a point of the drive train of the adjustment takes place at which the drive torque of the electric motor is already underpinned by means of the reduction gear, so a relatively large torque is transmitted, according to the invention, the rotationally fixed connection between the rotatably mounted components instead of at a point of the drive train, where the torque has not been implemented, ie at a point of the drive train, where the torque is relatively low. According to the invention, therefore, the implementation of the drive torque by the reduction gear of the substantially rotationally fixed coupling of the transmission elements is downstream of each other.
  • the cross section of the connecting shaft can be substantially reduced without the risk of substantial torsion of the connecting shaft. This simplifies the structure of the support device and thus saves costs.
  • the adjustment units easier constructed and thus also be designed more cost-effective. This further reduces the manufacturing costs.
  • Another advantage of the support device according to the invention is that the reduction of the cross section of the connecting shaft leads to a lower weight.
  • This advantage is particularly important if the support means has more than one connecting shaft.
  • a further connecting shaft may be provided which connects a leg support part of a slatted frame associated adjusting units together.
  • Another advantage of the support device according to the invention is that the freedoms are increased in terms of the structural design of the adjustment.
  • the reduction gear can be any suitable gear, for example a gear transmission.
  • An advantageous development of the invention provides insofar as the reduction gear is a worm gear. Suitable worm gears are available as relatively simple and inexpensive as well as robust standard components.
  • the input-side gear element is a worm of the worm gear.
  • transmission element understood via which the drive torque of the electric motor is introduced into the reduction gear.
  • the output-side gear element of the worm gear is thus formed by the worm wheel. If the worm gear has a plurality of worm wheels, which are in engagement with a common worm, then each worm wheel forms an output-side gear element according to the invention.
  • the input-side gear element may also be formed by a worm wheel, so that the output-side gear element is then a worm.
  • a reduction of the drive torque of the electric motor can be achieved exclusively by means of a single reduction gear whose input-side gear element forms the rotatably mounted component.
  • an advantageous development of the invention provides that the respective output-side gear member of the reduction gear is rotatably connected to a rotatably mounted threaded spindle on the rotationally fixed and axially movable according to the direction of rotation of the threaded spindle a spindle nut is arranged, which the output member of forms respective adjustment.
  • the adjustment units are designed as linear drives.
  • FIG. 1 an embodiment of a support device according to the invention for supporting a padding of a seat and / or reclining furniture is shown, which is designed as a slatted base and serves to support a mattress of a bed.
  • the support device 2 has a frame-like basic body 4 with a first support part 6, which is part of an upper body support 8 consisting of several support parts.
  • the first support member 6 is adjustable relative to a second support member 10, wherein in the illustrated embodiment, the second support member 10 is formed by a stationary support member, with which the first support member 6 is pivotally connected and pivotable about a horizontal pivot axis.
  • the support device 2 further comprises an electromotive adjusting device 12, which in below with reference to FIG Figures 2 and 3 closer explained manner with the first support member 6 in operative connection is for adjusting the same relative to the second support member 10.
  • the electromotive adjusting device 12 has an electric motor 14 and a first adjustment unit 16, the below with reference to Fig. 2 is explained in more detail, and a second adjusting unit 18, which is described below with reference to Fig. 3 is explained in more detail on.
  • a corresponding electromotive adjusting device 12 ' is provided, which is constructed according to the electromotive adjusting device 12 and therefore not explained in detail.
  • the first adjustment unit 16 and the second adjustment unit 18 are arranged on opposite longitudinal sides of the base body 4.
  • Fig. 2 shows a detail in the area of the first adjusting unit 16.
  • the first adjusting unit 16 has a rotatably mounted component, which via a connecting shaft 22 is substantially non-rotatably connected to a similar component of the second adjustment unit 18.
  • the rotatably mounted component is in each case an input-side gear element of a reduction gear, which in this exemplary embodiment is designed as a worm gear whose worm 24 forms the input-side gear element, while a worm gear 26 engaging with the worm 24 forms an output-side gear element of the worm gear 24, 26 forms.
  • the worm wheel 26 is mounted by means of a ball bearing 28 in a housing 30 of the first adjustment unit 16.
  • the housing 30 of the first adjustment unit 16 in Fig. 2 opened.
  • the worm wheel 26 is non-rotatably connected to a rotatably mounted threaded spindle 32, for the sake of clarity in Fig. 2 only an axial section is shown.
  • a spindle nut 34 is arranged, which forms the output member of the first adjustment unit 16. According to the direction of rotation of the threaded spindle 32, the spindle nut 34 in the axial direction of the threaded spindle 32 in the direction of a double arrow 36 back and forth.
  • Fig. 3 shows a detail in the area of the second adjustment unit 18.
  • the second adjustment unit 18 is constructed in mirror image to the first adjustment unit 16 and is therefore not explained in detail.
  • the worm 24 of the first adjustment unit 16 is connected via the connecting shaft 22 substantially non-rotatably connected to a corresponding screw of the second adjustment unit 18.
  • the output shaft of the electric motor 14 is connected to a first gear 38 in rotary drive connection, which is in engagement with a second gear 40 which is rotatably connected to the connecting shaft 22 so that when the electric motor 14, the connecting shaft 22 according to the direction of rotation of the output shaft of the electric motor 14th is turned.
  • the operation of the support device 2 according to the invention is as follows:
  • the connecting shaft 22 transmits a relative low torque, so that the connecting shaft 22 can be made with a relatively small cross-section.
  • a substantially non-rotatable connection between similar rotatably mounted components of the first adjustment and the second adjustment according to the invention also understood due to a torsion of the connecting shaft 22 is not completely rotatable connection, as long as the torsion of the connecting shaft 22 does not lead to a significant lagging or advance one of Longitudinal sides of the first support member 6 leads during the adjustment.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Gear Transmission (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Transmission Devices (AREA)

Description

Die Erfindung betrifft eine elektromotorisch verstellbare Stützeinrichtung der im Oberbegriff des Anspruchs 1 genannten Art zur Abstützung einer Polsterung eines Sitz- und/oder Liegemöbels, insbesondere einer Matratze eines Bettes.The invention relates to an electromotive adjustable support means referred to in the preamble of claim 1 for supporting a padding of a seat and / or reclining furniture, in particular a mattress of a bed.

Derartige Stützeinrichtungen für Polsterungen von Sitz- und/oder Liegemöbeln sind beispielsweise in Form von Lattenrosten allgemein bekannt, beispielsweise durch EP 0 372 032 B2 , DE 38 42 078 C2 , DE 199 62 541 C3 und DE 100 46 751 A1 .Such support means for upholstery of seating and / or reclining furniture are well known, for example in the form of slatted frames, for example, by EP 0 372 032 B2 . DE 38 42 078 C2 . DE 199 62 541 C3 and DE 100 46 751 A1 ,

Durch DE 10 2004 016 048 A1 ist eine elektromotorisch verstellbare Stützeinrichtung der betreffenden Art zur Abstützung einer Polsterung eines Sitz- und/oder Liegemöbels, insbesondere einer Matratze eines Bettes bekannt, die einen Grundkörper aufweist, der ein erstes Stützteil aufweist, das relativ zu einem zweiten Stützteil verstellbar, insbesondere verschwenkbar ist. Die bekannte Stützeinrichtung weist ferner eine elektromotorische Verstelleinrichtung auf, die mit dem ersten Stützteil zum Verstellen desselben in Wirkungsverbindung steht. Bei der bekannten Stützeinrichtung weist die Verstelleinrichtung eine erste und eine zweite Verstelleinheit auf, die an gegenüberliegenden Längsseiten des Grundkörpers angeordnet sind, wobei ein drehbar gelagertes Bauteil der ersten Verstelleinheit über eine Verbindungswelle im wesentlichen drehfest mit einem gleichartigen Bauteil der zweiten Verstelleinheit verbunden ist und wobei den Verstelleinheiten ein gemeinsamer Elektromotor zugeordnet ist. Bei den über die Verbindungswelle im wesentlichen drehfest miteinander verbundenen Bauteilen handelt es sich bei der aus der Druckschrift bekannten Stützeinrichtung um Schwenkwellen, die mit dem ersten Stützteil zum Verschwenken desselben in Wirkungsverbindung stehen. Die aus der Druckschrift bekannte Stützeinrichtung ist hierbei so ausgestaltet, daß einer Verstelleinheit ein Elektromotor zugeordnet ist, dessen Antriebsdrehmoment über die Verbindungswelle auf die zweite Verstelleinheit übertragen wird. Das jeweils über einen Spindeltrieb in eine Verstellkraft umgewandelte Antriebsdrehmoment des Elektromotors wird somit über die erste Verstelleinheit einerseits und die zweite Verstelleinheit andererseits in gegenüberliegende Längsseiten eines ersten Stützteiles eingeleitet, so daß beide Verstelleinheiten mechanisch miteinander zwangssynchronisiert sind. Auf diese Weise ist vermieden, daß sich die Längsseiten des Stützteiles bei einer Verstellbewegung in unterschiedlichem Maße anheben, was zu einer Verwindung des ersten Stützteiles führen könnte.By DE 10 2004 016 048 A1 an electromotive adjustable support means of the type in question for supporting a padding of a seat and / or reclining furniture, in particular a mattress of a bed is known which has a base body having a first support member which is adjustable relative to a second support member, in particular pivotable. The known support means further comprises an electromotive adjustment, which is in operative connection with the first support member for adjusting the same. In the known support means, the adjusting device on a first and a second adjusting unit, which are arranged on opposite longitudinal sides of the base body, wherein a rotatably mounted component of the first adjustment unit via a connecting shaft substantially rotatably with a similar component of the second adjustment unit is connected and wherein the adjusting units associated with a common electric motor. In the interconnected via the connecting shaft substantially non-rotatably interconnected components is in the known from the document support means to pivot shafts, the same are in operative connection with the first support member for pivoting. The support device known from the document is in this case designed such that an adjusting unit is associated with an electric motor whose drive torque is transmitted via the connecting shaft to the second adjusting unit. The respectively converted by a spindle drive in an adjusting drive torque of the electric motor is thus introduced via the first adjustment on the one hand and the second adjustment on the other hand in opposite longitudinal sides of a first support member, so that both adjustment units are mechanically zwangsssynchronisiert together. In this way it is avoided that raise the longitudinal sides of the support member at an adjustment to varying degrees, which could lead to a distortion of the first support member.

Der Erfindung liegt die Aufgabe zugrunde, eine elektromotorisch verstellbare Stützeinrichtung der im Oberbegriff des Anspruchs 1 genannten Art zur Abstützung einer Polsterung eines Sitz- und/oder Liegemöbels, insbesondere einer Matratze eines Bettes, anzugeben, deren Aufbau vereinfacht und damit kostengünstiger gestaltet ist.The invention has for its object to provide an electric motor adjustable support means referred to in the preamble of claim 1 for supporting a padding of a seat and / or reclining furniture, in particular a mattress of a bed, whose structure is simplified and thus designed more cost-effective.

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

Der Erfindung liegt die Erkenntnis zugrunde, daß die Verbindungswelle bei der bekannten Stützeinrichtung einem erheblichen Torsionsmoment unterworfen ist. Um eine unerwünschte Torsion zu vermeiden, die zur Folge haben könnte, daß die Längsseiten des ersten Stützteiles bei der Verstellung in unterschiedlichem Maße angehoben werden, ist es bei der bekannten Stützeinrichtung erforderlich, eine Verbindungswelle mit großem Querschnitt zu verwenden.The invention is based on the finding that the connecting shaft in the known support means subjected to a considerable torsional moment. In order to avoid unwanted torsion, which could result in the longitudinal sides of the first support member being raised to varying degrees during the adjustment, it is necessary in the known support means to use a connecting shaft of large cross-section.

Hiervon ausgehend liegt der Erfindung der Gedanke zugrunde, über die Verbindungswelle drehbar gelagerte Bauteile der Verstelleinheiten im wesentlichen drehfest miteinander zu verbinden, die jeweils ein eingangsseitiges Getriebeelement eines Untersetzungsgetriebes sind. Während bei der bekannten Stützeinrichtung die drehfeste Kopplung der drehbar gelagerten Bauteile aneinander an einer Stelle des Antriebszuges der Verstelleinrichtung erfolgt, an der das Antriebsdrehmoment des Elektromotors mittels des Untersetzungsgetriebes bereits untersetzt ist, also ein verhältnismäßig großes Drehmoment zu übertragen ist, findet erfindungsgemäß die drehfeste Verbindung zwischen den drehbar gelagerten Bauteilen an einer Stelle des Antriebszuges statt, an der das Drehmoment noch nicht umgesetzt worden ist, also an einer Stelle des Antriebszuges, an der das Drehmoment relativ gering ist. Erfindungsgemäß ist also die Umsetzung des Antriebsdrehmomentes durch das Untersetzungsgetriebe der im wesentlichen drehfesten Kopplung der Getriebeelemente aneinander nachgelagert.Proceeding from this, the invention is based on the idea to connect via the connecting shaft rotatably mounted components of the adjusting essentially non-rotatably with each other, each of which is an input-side gear element of a reduction gear. While in the known support means the non-rotatable coupling of the rotatably mounted components to each other at a point of the drive train of the adjustment takes place at which the drive torque of the electric motor is already underpinned by means of the reduction gear, so a relatively large torque is transmitted, according to the invention, the rotationally fixed connection between the rotatably mounted components instead of at a point of the drive train, where the torque has not been implemented, ie at a point of the drive train, where the torque is relatively low. According to the invention, therefore, the implementation of the drive torque by the reduction gear of the substantially rotationally fixed coupling of the transmission elements is downstream of each other.

Im Ergebnis kann bei der erfindungsgemäßen Stützeinrichtung der Querschnitt der Verbindungswelle wesentlich verringert werden, ohne daß die Gefahr einer wesentlichen Torsion der Verbindungswelle besteht. Dies vereinfacht den Aufbau der Stützeinrichtung und spart damit Kosten. Darüber hinaus können bei der erfindungsgemäßen Stützeinrichtung die Verstelleinheiten einfacher aufgebaut und damit ebenfalls kostengünstiger ausgestaltet sein. Dies senkt die Herstellungskosten weiter.As a result, in the support device according to the invention, the cross section of the connecting shaft can be substantially reduced without the risk of substantial torsion of the connecting shaft. This simplifies the structure of the support device and thus saves costs. In addition, in the support device according to the invention, the adjustment units easier constructed and thus also be designed more cost-effective. This further reduces the manufacturing costs.

Ein weiterer Vorteil der erfindungsgemäßen Stützeinrichtung besteht darin, daß die Verringerung des Querschnitts der Verbindungswelle zu einem geringeren Gewicht führt. Dieser Vorteil ist insbesondere dann wesentlich, wenn die Stützeinrichtung mehr als eine Verbindungswelle aufweist. Beispielsweise kann zusätzlich zu einer Verbindungswelle, die einem Oberkörperstützteil zugeordnete Verstelleinheiten miteinander verbindet, eine weitere Verbindungswelle vorgesehen sein, die einem Beinstützteil eines Lattenrostes zugeordnete Verstelleinheiten miteinander verbindet.Another advantage of the support device according to the invention is that the reduction of the cross section of the connecting shaft leads to a lower weight. This advantage is particularly important if the support means has more than one connecting shaft. For example, in addition to a connecting shaft, which connects an upper body support member associated adjusting units with each other, a further connecting shaft may be provided which connects a leg support part of a slatted frame associated adjusting units together.

Ein weiterer Vorteil der erfindungsgemäßen Stützeinrichtung besteht darin, daß die Freiheiten hinsichtlich der konstruktiven Ausgestaltung der Verstelleinheiten erhöht sind.Another advantage of the support device according to the invention is that the freedoms are increased in terms of the structural design of the adjustment.

Bei dem Untersetzungsgetriebe kann es sich um ein beliebiges geeignetes Getriebe handeln, beispielsweise ein Zahnradgetriebe. Eine vorteilhafte Weiterbildung der Erfindung sieht insoweit vor, daß das Untersetzungsgetriebe ein Schneckengetriebe ist. Geeignete Schneckengetriebe stehen als relativ einfache und kostengünstige sowie robuste Standardbauteile zur Verfügung.The reduction gear can be any suitable gear, for example a gear transmission. An advantageous development of the invention provides insofar as the reduction gear is a worm gear. Suitable worm gears are available as relatively simple and inexpensive as well as robust standard components.

Eine vorteilhafte Weiterbildung der vorgenannten Ausführungsform sieht vor, daß das eingangsseitige Getriebeelement eine Schnecke des Schneckengetriebes ist. Unter dem eingangsseitigen Getriebeelement des Untersetzungsgetriebes wird erfindungsgemäß dasjenige Getriebeelement verstanden, über das das Antriebsdrehmoment des Elektromotors in das Untersetzungsgetriebe eingeleitet wird. Bei der vorgenannten Ausführungsform ist das ausgangsseitige Getriebeelement des Schneckengetriebes somit durch das Schneckenrad gebildet. Falls das Schneckengetriebe mehrere Schneckenräder aufweist, die mit einer gemeinsamen Schnecke in Eingriff stehen, so bildet jedes Schneckenrad ein ausgangsseitiges Getriebeelement im Sinne der Erfindung.An advantageous development of the aforementioned embodiment provides that the input-side gear element is a worm of the worm gear. Under the input-side gear element of the reduction gear according to the invention that transmission element understood, via which the drive torque of the electric motor is introduced into the reduction gear. In the aforementioned embodiment the output-side gear element of the worm gear is thus formed by the worm wheel. If the worm gear has a plurality of worm wheels, which are in engagement with a common worm, then each worm wheel forms an output-side gear element according to the invention.

Bei den Ausführungsformen mit dem Schneckengetriebe kann das eingangsseitige Getriebeelement jedoch auch durch ein Schneckenrad gebildet sein, so daß das ausgangsseitige Getriebeelement dann eine Schnecke ist. Erfindungsgemäß kann eine Untersetzung des Antriebsdrehmomentes des Elektromotors ausschließlich mittels eines einzigen Untersetzungsgetriebes, dessen eingangsseitiges Getriebeelement das drehbar gelagerte Bauteil bildet, erzielt werden. Es ist erfindungsgemäß jedoch auch möglich, diesem Untersetzungsgetriebe ein zusätzliches oder mehrere zusätzliche Untersetzungsgetriebe nachzuordnen, falls eine weitere Untersetzung erwünscht oder erforderlich ist.In the embodiments with the worm gear, however, the input-side gear element may also be formed by a worm wheel, so that the output-side gear element is then a worm. According to the invention, a reduction of the drive torque of the electric motor can be achieved exclusively by means of a single reduction gear whose input-side gear element forms the rotatably mounted component. However, it is also possible according to the invention to subordinate this reduction gear an additional or more additional reduction gear, if a further reduction is desired or required.

Um mit einem relativ einfachen konstruktiven Aufbau eine Verstellung, insbesondere Verschwenkung des ersten Stützteiles relativ zu dem zweiten Stützteil zu bewirken, ist es zweckmäßig, die Drehung des ausgangsseitigen Getriebeelementes des Untersetzungsgetriebes in eine Linearbewegung eines Abtriebsorganes umzusetzen, das seinerseits mit dem ersten Stützteil in Wirkungsverbindung steht zum Verstellen, insbesondere Verschwenken desselben. Insoweit sieht eine vorteilhafte Weiterbildung der Erfindung vor, daß das jeweilige ausgangsseitige Getriebeelement des Untersetzungsgetriebes drehfest mit einer drehbar gelagerten Gewindespindel verbunden ist, auf der drehfest und entsprechend der Drehrichtung der Gewindespindel axial beweglich eine Spindelmutter angeordnet ist, die das Abtriebsorgan der jeweiligen Verstelleinrichtung bildet. Bei dieser Ausführungsform sind die Verstelleinheiten als Linearantriebe ausgebildet.In order to effect an adjustment, in particular pivoting of the first support member relative to the second support member with a relatively simple structural design, it is expedient to convert the rotation of the output side gear member of the reduction gear in a linear movement of a driven member, which in turn is in operative connection with the first support member for adjusting, in particular pivoting the same. In that regard, an advantageous development of the invention provides that the respective output-side gear member of the reduction gear is rotatably connected to a rotatably mounted threaded spindle on the rotationally fixed and axially movable according to the direction of rotation of the threaded spindle a spindle nut is arranged, which the output member of forms respective adjustment. In this embodiment, the adjustment units are designed as linear drives.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispieles unter Bezugnahme auf die beigefügte Zeichnung näher erläutert. Dabei bilden alle beschriebenen, in der Zeichnung dargestellten und in den Patentansprüchen beanspruchten Merkmale für sich genommen sowie in beliebiger Kombination miteinander den Gegenstand der Erfindung unabhängig von ihrer Zusammenfassung in den Patentansprüchen und deren Rückbeziehung sowie unabhängig von ihrer Beschreibung bzw. Darstellung in der Zeichnung.The invention will be explained in more detail with reference to an embodiment with reference to the accompanying drawings. In this case, all described, shown in the drawings and claimed in the claims characteristics taken alone and in any combination with each other, the subject matter of the invention regardless of their summary in the claims and their dependency and regardless of their description or representation in the drawing.

Es zeigt:

Fig. 1
eine Perspektivansicht eines Ausführungsbeispiels einer erfindungsgemäßen Stützeinrichtung in Form eines Lattenrostes, wobei der Übersichtlichkeit halber die Latten des Lattenrostes weggelassen sind,
Fig. 2
eine perspektivische Detailansicht einer Einzelheit einer ersten Verstelleinheit einer Verstelleinrichtung der Stützeinrichtung gemäß Fig. 1 und
Fig. 3
in gleicher Darstellung wie Fig. 2 eine Einzelheit im Bereich einer zweiten Verstelleinheit der Stützeinrichtung.
It shows:
Fig. 1
a perspective view of an embodiment of a support device according to the invention in the form of a slatted frame, wherein the sake of clarity, the slats of the slatted frame are omitted,
Fig. 2
a perspective detail view of a detail of a first adjustment of an adjustment of the support device according to Fig. 1 and
Fig. 3
in the same representation as Fig. 2 a detail in the range of a second adjustment of the support device.

In Fig. 1 ist ein Ausführungsbeispiel einer erfindungsgemäßen Stützeinrichtung zur Abstützung einer Polsterung eines Sitz- und/oder Liegemöbels dargestellt, die als Lattenrost ausgebildet ist und zur Abstützung einer Matratze eines Bettes dient. Zur Vereinfachung der Darstellung sind in Fig. 1 sowohl die Latten des Lattenrostes als auch die Matratze weggelassen. Die Stützeinrichtung 2 weist einen rahmenartigen Grundkörper 4 mit einem ersten Stützteil 6 auf, das Teil einer aus mehreren Stützteilen bestehenden Oberkörperstütze 8 ist. Das erste Stützteil 6 ist relativ zu einem zweiten Stützteil 10 verstellbar, wobei bei dem dargestellten Ausführungsbeispiel das zweite Stützteil 10 durch ein ortsfestes Stützteil gebildet ist, mit dem das erste Stützteil 6 gelenkig und um eine horizontale Schwenkachse verschwenkbar verbunden ist.In Fig. 1 an embodiment of a support device according to the invention for supporting a padding of a seat and / or reclining furniture is shown, which is designed as a slatted base and serves to support a mattress of a bed. For simplification the representation are in Fig. 1 omitted both the slats of the slatted frame and the mattress. The support device 2 has a frame-like basic body 4 with a first support part 6, which is part of an upper body support 8 consisting of several support parts. The first support member 6 is adjustable relative to a second support member 10, wherein in the illustrated embodiment, the second support member 10 is formed by a stationary support member, with which the first support member 6 is pivotally connected and pivotable about a horizontal pivot axis.

Die Stützeinrichtung 2 weist ferner eine elektromotorische Verstelleinrichtung 12 auf, die in weiter unten anhand der Figuren 2 und 3 näher erläuterter Weise mit dem ersten Stützteil 6 in Wirkungsverbindung steht zum Verstellen desselben relativ zu dem zweiten Stützteil 10. Die elektromotorische Verstelleinrichtung 12 weist einen Elektromotor 14 sowie eine erste Verstelleinheit 16, die weiter unten anhand von Fig. 2 näher erläutert wird, und eine zweite Verstelleinheit 18, die weiter unten anhand von Fig. 3 näher erläutert wird, auf.The support device 2 further comprises an electromotive adjusting device 12, which in below with reference to FIG Figures 2 and 3 closer explained manner with the first support member 6 in operative connection is for adjusting the same relative to the second support member 10. The electromotive adjusting device 12 has an electric motor 14 and a first adjustment unit 16, the below with reference to Fig. 2 is explained in more detail, and a second adjusting unit 18, which is described below with reference to Fig. 3 is explained in more detail on.

Zur Verstellung einer Beinstütze 20 der Stützeinrichtung 2 ist eine entsprechende elektromotorische Verstelleinrichtung 12' vorgesehen, die zu der elektromotorischen Verstelleinrichtung 12 entsprechend aufgebaut ist und daher nicht näher erläutert wird.For adjusting a legrest 20 of the support device 2, a corresponding electromotive adjusting device 12 'is provided, which is constructed according to the electromotive adjusting device 12 and therefore not explained in detail.

Wie aus Fig. 1 ersichtlich ist, sind die erste Verstelleinheit 16 und die zweite Verstelleinheit 18 an gegenüberliegenden Längsseiten des Grundkörpers 4 angeordnet.How out Fig. 1 it can be seen, the first adjustment unit 16 and the second adjustment unit 18 are arranged on opposite longitudinal sides of the base body 4.

Fig. 2 zeigt eine Einzelheit im Bereich der ersten Verstelleinheit 16. Die erste Verstelleinheit 16 weist ein drehbar gelagertes Bauteil auf, das über eine Verbindungswelle 22 im wesentlichen drehfest mit einem gleichartigen Bauteil der zweiten Verstelleinheit 18 verbunden ist. Erfindungsgemäß ist das drehbar gelagerte Bauteil jeweils ein eingangsseitiges Getriebeelement eines Untersetzungsgetriebes, das bei diesem Ausführungsbeispiel als Schneckengetriebe ausgebildet ist, dessen Schnecke 24 das eingangsseitige Getriebeelement bildet, während ein mit dem mit der Schnecke 24 in Eingriff stehendes Schneckenrad 26 ein ausgangsseitiges Getriebeelement des Schneckengetriebes 24, 26 bildet. Das Schneckenrad 26 ist mittels eines Kugellagers 28 in einem Gehäuse 30 der ersten Verstelleinheit 16 gelagert. Aus Darstellungsgründen ist das Gehäuse 30 der ersten Verstelleinheit 16 in Fig. 2 geöffnet dargestellt. Fig. 2 shows a detail in the area of the first adjusting unit 16. The first adjusting unit 16 has a rotatably mounted component, which via a connecting shaft 22 is substantially non-rotatably connected to a similar component of the second adjustment unit 18. According to the invention, the rotatably mounted component is in each case an input-side gear element of a reduction gear, which in this exemplary embodiment is designed as a worm gear whose worm 24 forms the input-side gear element, while a worm gear 26 engaging with the worm 24 forms an output-side gear element of the worm gear 24, 26 forms. The worm wheel 26 is mounted by means of a ball bearing 28 in a housing 30 of the first adjustment unit 16. For purposes of illustration, the housing 30 of the first adjustment unit 16 in Fig. 2 opened.

Das Schneckenrad 26 ist drehfest mit einer drehbar gelagerten Gewindespindel 32 verbunden, von der aus Darstellungsgründen in Fig. 2 lediglich ein axialer Abschnitt dargestellt ist. Auf der Gewindespindel 32 ist drehfest und entsprechend der Drehrichtung der Gewindespindel 32 eine Spindelmutter 34 angeordnet, die das Abtriebsorgan der ersten Verstelleinheit 16 bildet. Entsprechend der Drehrichtung der Gewindespindel 32 ist die Spindelmutter 34 in Axialrichtung der Gewindespindel 32 in Richtung eines Doppelpfeiles 36 hin- und herbeweglich. Über den durch die Spindel 32 und die Spindelmutter 34 gebildeten Spindeltrieb wird somit die Drehbewegung der Verbindungswelle 22 in eine Linearbewegung der Spindelmutter 34 umgewandelt, so daß ein von dem Elektromotor 14 erzeugtes Antriebsdrehmoment in eine Verstellkraft umgewandelt wird, die in das erste Stützteil 6 eingeleitet wird. Die Art und Weise, wie eine Linearbewegung der Spindelmutter 34 in eine Schwenkbewegung des ersten Stützteiles 6 relativ zu dem zweiten Stützteil 10 umgesetzt werden kann, ist dem Fachmann allgemein bekannt und wird daher hier nicht näher erläutert.The worm wheel 26 is non-rotatably connected to a rotatably mounted threaded spindle 32, for the sake of clarity in Fig. 2 only an axial section is shown. On the threaded spindle 32 is rotatably and according to the direction of rotation of the threaded spindle 32, a spindle nut 34 is arranged, which forms the output member of the first adjustment unit 16. According to the direction of rotation of the threaded spindle 32, the spindle nut 34 in the axial direction of the threaded spindle 32 in the direction of a double arrow 36 back and forth. On the spindle drive formed by the spindle 32 and the spindle nut 34 thus the rotational movement of the connecting shaft 22 is converted into a linear movement of the spindle nut 34 so that a generated by the electric motor 14 drive torque is converted into an adjusting force, which is introduced into the first support member 6 , The manner in which a linear movement of the spindle nut 34 in a pivoting movement of the first support member 6 relative to the second support member 10 can be implemented, the skilled person is well known and will therefore not be discussed here.

Fig. 3 zeigt eine Einzelheit im Bereich der zweiten Verstelleinheit 18. Die zweite Verstelleinheit 18 ist zu der ersten Verstelleinheit 16 entsprechend spiegelbildlich aufgebaut und wird daher nicht näher erläutert. Fig. 3 shows a detail in the area of the second adjustment unit 18. The second adjustment unit 18 is constructed in mirror image to the first adjustment unit 16 and is therefore not explained in detail.

Erfindungsgemäß ist somit die Schnecke 24 der ersten Verstelleinheit 16 über die Verbindungswelle 22 im wesentlichen drehfest mit einer entsprechenden Schnecke der zweiten Verstelleinheit 18 verbunden.According to the invention, therefore, the worm 24 of the first adjustment unit 16 is connected via the connecting shaft 22 substantially non-rotatably connected to a corresponding screw of the second adjustment unit 18.

Die Einleitung eines Drehmomentes in die Verbindungswelle 22 erfolgt über den Elektromotor 14, der aus Darstellungsgründen in Fig. 3 weggelassen ist. Die Abtriebswelle des Elektromotors 14 steht mit einem ersten Zahnrad 38 in Drehantriebsverbindung, das in Eingriff mit einem zweiten Zahnrad 40 steht, das drehfest mit der Verbindungswelle 22 verbunden ist, so daß bei laufendem Elektromotor 14 die Verbindungswelle 22 entsprechend der Drehrichtung der Abtriebswelle des Elektromotors 14 gedreht wird.The introduction of a torque in the connecting shaft 22 via the electric motor 14, which for reasons of representation in Fig. 3 is omitted. The output shaft of the electric motor 14 is connected to a first gear 38 in rotary drive connection, which is in engagement with a second gear 40 which is rotatably connected to the connecting shaft 22 so that when the electric motor 14, the connecting shaft 22 according to the direction of rotation of the output shaft of the electric motor 14th is turned.

Die Funktionsweise der erfindungsgemäßen Stützeinrichtung 2 ist wie folgt:The operation of the support device 2 according to the invention is as follows:

Zum Verstellen des ersten Stützteiles 6 relativ zu dem zweiten Stützteil 10 wird der Elektromotor 14 angesteuert, so daß sich die Verbindungswelle 22 dreht. Aufgrund der im wesentlichen drehfesten Verbindung zwischen der Schnecke 24 der ersten Verstelleinheit 16 und der entsprechenden Schnecke der zweiten Verstelleinheit 18 werden beide Schnecken im wesentlichen synchron gedreht, so daß sich die der ersten Verstelleinheit 16 zugeordnete Spindelmutter 34 und die entsprechende der zweiten Verstelleinheit 18 zugeordnete Spindelmutter im wesentlichen synchron bewegen. Die Spindelmuttern leiten eine Verstellkraft in gegenüberliegende Längsseiten des ersten Stützteiles 6 ein, so daß diese synchron oder im wesentlichen synchron angehoben werden.For adjusting the first support member 6 relative to the second support member 10 of the electric motor 14 is driven, so that the connecting shaft 22 rotates. Due to the substantially rotationally fixed connection between the screw 24 of the first adjustment unit 16 and the corresponding screw of the second adjustment unit 18, both screws are rotated substantially synchronously, so that the first adjusting unit 16 associated spindle nut 34 and the corresponding second adjustment unit 18 associated spindle nut in the move substantially synchronously. The spindle nuts introduce an adjusting force into opposite longitudinal sides of the first support member 6, so that they are raised synchronously or substantially synchronously.

Dadurch, daß eine Untersetzung des Antriebsdrehmomentes des Elektromotors 14 an einer in dem Antriebsstrang der Verbindungswelle 22 nachgeordneten Stelle erfolgt, nämlich durch das der ersten Verstelleinheit 16 zugeordnete Schneckengetriebe 24, 26 und das der zweiten Verstelleinheit 18 zugeordnete entsprechende Schneckengetriebe, überträgt die Verbindungswelle 22 ein relativ geringes Drehmoment, so daß die Verbindungswelle 22 mit einem relativ kleinen Querschnitt ausgeführt werden kann. Unter einer im wesentlichen drehfesten Verbindung zwischen gleichartigen drehbar gelagerten Bauteilen der ersten Verstelleinheit und der zweiten Verstelleinheit wird erfindungsgemäß auch eine aufgrund einer Torsion der Verbindungswelle 22 nicht vollständig drehfeste Verbindung verstanden, solange die Torsion der Verbindungswelle 22 nicht zu einem wesentlichen Nacheilen bzw. Voreilen einer der Längsseiten des ersten Stützteiles 6 bei der Verstellung führt.Characterized in that a reduction of the drive torque of the electric motor 14 takes place at a downstream in the drive train of the connecting shaft 22, namely by the first adjusting unit 16 associated worm gear 24, 26 and the second adjusting unit 18 associated with corresponding worm gear, the connecting shaft 22 transmits a relative low torque, so that the connecting shaft 22 can be made with a relatively small cross-section. Under a substantially non-rotatable connection between similar rotatably mounted components of the first adjustment and the second adjustment according to the invention also understood due to a torsion of the connecting shaft 22 is not completely rotatable connection, as long as the torsion of the connecting shaft 22 does not lead to a significant lagging or advance one of Longitudinal sides of the first support member 6 leads during the adjustment.

Claims (4)

  1. Support device (2) adjustable by electric motor for supporting a cushioning of a piece of furniture for sitting and/or lying on, in particular a mattress of a bed comprising,
    a base body (4) having a first support part (6) that is adjustable, in particular pivotable, in relation to a second support part (10),
    an electric motor adjusting device (12) which is operatively connected with the first support part (6) for adjusting the latter,
    wherein the adjusting device (12) comprises a first adjusting unit (16) and a second adjusting unit (18) which are arranged on opposite longitudinal sides of the base body (4),
    wherein a rotatably supported component of the first adjusting unit (16) is connected in an essentially rotationally fixed manner to a similar component of the second adjusting unit (18) via a connecting shaft (22) and
    wherein a shared electric motor (14) is assigned to the adjusting units (16, 18),
    characterised in that
    the rotatably mounted component is an input-side transmission element of a reduction gear.
  2. Support device according to claim 1, characterised in that the reduction gear is a worm gear (24, 26).
  3. Support device according to claim 2, characterised in that the input-side transmission element is a worm (24) of the worm gear (24, 26).
  4. Support device according to any one of the preceding claims, characterised in that the respective output-side transmission element of the reduction gear is connected in a rotationally fixed manner to a rotatably supported threaded spindle (32), on which a spindle nut (34) is arranged in a rotationally fixed manner and axially movably according to the rotational direction of the threaded spindle (32), which forms the output element of the respective adjusting device (16).
EP10716282A 2009-04-17 2010-03-31 Support device adjustable by an electric motor Active EP2418982B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009017894.5A DE102009017894B4 (en) 2009-04-17 2009-04-17 Electromotive adjustable support device
PCT/EP2010/002088 WO2010118830A1 (en) 2009-04-17 2010-03-31 Support device adjustable by an electric motor

Publications (2)

Publication Number Publication Date
EP2418982A1 EP2418982A1 (en) 2012-02-22
EP2418982B1 true EP2418982B1 (en) 2013-03-06

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EP10716282A Active EP2418982B1 (en) 2009-04-17 2010-03-31 Support device adjustable by an electric motor

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US (1) US20120060287A1 (en)
EP (1) EP2418982B1 (en)
JP (1) JP2012523867A (en)
CN (1) CN102395299A (en)
DE (1) DE102009017894B4 (en)
WO (1) WO2010118830A1 (en)

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DE102022111839A1 (en) 2022-05-11 2023-11-16 De Werth Group Ag Support device adjustable by electric motor

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Also Published As

Publication number Publication date
DE102009017894B4 (en) 2014-09-11
US20120060287A1 (en) 2012-03-15
EP2418982A1 (en) 2012-02-22
WO2010118830A1 (en) 2010-10-21
CN102395299A (en) 2012-03-28
JP2012523867A (en) 2012-10-11
DE102009017894A1 (en) 2010-10-21

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