EP1192882A2 - Back-rest - Google Patents

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Publication number
EP1192882A2
EP1192882A2 EP01122534A EP01122534A EP1192882A2 EP 1192882 A2 EP1192882 A2 EP 1192882A2 EP 01122534 A EP01122534 A EP 01122534A EP 01122534 A EP01122534 A EP 01122534A EP 1192882 A2 EP1192882 A2 EP 1192882A2
Authority
EP
European Patent Office
Prior art keywords
backrest
side parts
support
steel plates
membrane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01122534A
Other languages
German (de)
French (fr)
Other versions
EP1192882B1 (en
EP1192882A3 (en
Inventor
Hatty Fischer
Manfred Schlegel
Mathias Seiler
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.)
Sedus Stoll AG
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Sedus Stoll AG
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Filing date
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Application filed by Sedus Stoll AG filed Critical Sedus Stoll AG
Publication of EP1192882A2 publication Critical patent/EP1192882A2/en
Publication of EP1192882A3 publication Critical patent/EP1192882A3/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/448—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with resilient blocks

Definitions

  • the invention relates to the field of seating, in particular a backrest for an office chair in which the backrest is gimbaled and has spring elements supported on the backrest support.
  • the backrest on the backrest support in the case of office chairs tie up as much as possible all movements of the user's back is able to follow.
  • the backrest is gimbal-mounted, that is is movable around the three spatial axes. It can do sagittal movements of the back, i.e. movements around a horizontal axis parallel to the body, but also torsional and transversal movements, i.e. movements about the vertical axis or about a horizontal axis perpendicular to the body, consequences.
  • Such combined upper body movements in three directions occur very frequently in practice, for example with the handle on the side at the bottom Drawer of a desk, or when turning to one Interlocutor.
  • Cardanic bearings for armrests are also called called called "dorsokinetically flexible joints".
  • a chair of the type described is e.g. known from EP-A 0308538.
  • the gimbal is achieved in that the back has a spherical segment-shaped shape, which is in a second spherical segment shape is mounted on the backrest support.
  • the center point around which the backrest can move is on the upholstery surface.
  • spring elements between the backrest and backrest support e.g. elastic polyester elements, the spring forces both perpendicular and parallel to the backrest surface exercise.
  • This well-known chair offers excellent seating comfort, conditionally but some effort in its manufacture.
  • Another chair with a gimbal backrest is known from EP-A 0935934.
  • the gimbal is there by means of a achieved circular cylindrical rubber-elastic element, on its two A steel plate is vulcanized on the end faces, which is connected to the backrest or the Backrest support is connected by screws.
  • the user can use it Move the backrest against the spring forces of the rubber-elastic element.
  • the backrest support can be moved backwards against a return spring be pressed.
  • the cushion is basically rigid on its user interface executed and kinked in the area of the rubber bearing.
  • This known chair has the advantage that the gimbal bearing less Includes individual parts, and is therefore cheaper to manufacture.
  • the conventional design of the user interface of the backrest cushion is optimal support of the user's back is not achieved.
  • the Linking the backrest support to the chair column and connecting to a Return spring very complex and therefore inexpensive.
  • the rubber-elastic bearing offers no tear-off protection: if the plates vulcanized to the rubber-elastic element should come loose, the backrest falls off the backrest support.
  • a gimballed and over Form spring-supported backrest such that they on the one hand the user's back in all possible movements, be it sagittal, transversal or twisting, provides optimal support, but on the other hand nevertheless is inexpensive to manufacture. Furthermore, a high stability of the Construction in robust everyday operation. After all, the backrest according to the invention also aesthetically, under the criteria of industrial designs, an optimal solution.
  • the essence of the invention is the idea of the back of a frame and one in it build up stretched membrane, and to design the frame so that on the one hand, the membrane provides optimal support for the back of the Let users unfold, but on the other hand in an elegant and technical way the gimbal connection between backrest and Backrest supports.
  • the backrest according to the invention has a tear-off protection: itself when the vulcanized steel plates are detached, the backrest does not fall down, but remains attached to the carrier.
  • FIG. 1 an office chair is shown in side view, which has a backrest a side part 1, a backrest support 2, a dorsokinetically flexible joint 3, a base with rollers 14, a column 15, a tilt mechanism 16, and one Seat 17 includes.
  • the backrest support 2 is with the tilt mechanism 16 and the seat 17 articulated so that when lowering the rear part of the Seat 17 synchronously gives an inclination of the backrest support 2.
  • the details such a mechanism with synchronous control of the seat and backrest are known e.g. from DE-A 196 40 564.
  • the side part 1 of the backrest has a lengthways extending groove 4.
  • the rotary control 9 is in the dorsokinetically flexible joint 3 shown.
  • Fig. 2 it can be seen how the side parts 1 of the backrest by means of a lower one Cross bar 6 and an upper cross bar 18 form a frame in which the Membrane 5 is stretched.
  • the frame is preferably made of plastic.
  • the membrane 5 is preferably made of an elastic fabric. she has welted side edges, by means of which they into the grooves 4 on the two Side parts 1 of the frame is clipped.
  • the upper crossbar 18 connects the two side parts 1 of the frame at their upper ends
  • the lower crosspiece 6 connects the two side parts 1 in height the user's lumbar vertebra.
  • the backrest frame a high degree of stability can be achieved with minimal material expenditure, and can in particular the tension of the membrane 5 in the region of the lower Cross bar 6, and thus in the critical lumbar region of the user, on largest are made.
  • the dorsokinetically flexible joint 3 in Lumbar region arranged.
  • the construction has a circular cylindrical rubber buffer 10 which is made of a rubber-elastic material, and on the outside Steel plates 11, 12 are vulcanized.
  • the rubber buffer 10 has a center Recess in which a butted steel ring 13 is arranged. This forms with the steel plates 11, 12 undercuts.
  • the steel ring 13 is by means of Screw 20 screwed to the lower crosspiece 6 and holds over the Undercut the steel plate 11 firmly on the backrest frame.
  • the steel plate 12 is screwed to the backrest support 2. Thereby the dorsokinetic Joint 3 via a tear-off protection: the vulcanization loosens between Rubber buffer 10 and steel plates 11, 12, so the back does not fall off, but remains effectively connected and functional with the carrier 2.
  • the rotary control 9 can also be seen in FIGS. 3 and 4: it exists made of steel and has the shape of a cylindrical ring, the jacket is bevelled such that the height of the jacket on one side is approximately is equal to the distance between crossbar 6 and backrest support 2, and on the opposite side smaller than this distance. Is this knob 9 now in the position shown in Fig. 3, it blocks the possibility of movement the upper part of the crossbar 6 and thus the backrest. In the in the position shown in Fig. 4, in which the knob 9 relative to the position in Fig. 3 is rotated by 180 °, but the upper part of the backrest can be free move.
  • the Backrest according to the invention provides excellent seating comfort by optimally supporting the Back, is significantly reduced compared to the prior art Manufacturing effort, and offers high aesthetics in industrial design and design memorability.

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  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The chair back comprises a frame over which an elastic fabric (5) is stretched. This consists of two vertical side members (1) connected by a lower (6) and upper cross-bar. The lower cross-bar is attached to the side members at the level of the lumbar vertebrae and the back is attached to a mounting (2) by a dorsokinetically flexible joint.

Description

TECHNISCHES GEBIETTECHNICAL AREA

Die Erfindung betrifft das Gebiet der Sitzmöbel, insbesondere eine Rückenlehne für einen Büro-Stuhl, bei welchem die Lehne kardanisch und über Federelemente gestützt am Lehnenträger gelagert ist.The invention relates to the field of seating, in particular a backrest for an office chair in which the backrest is gimbaled and has spring elements supported on the backrest support.

STAND DER TECHNIKSTATE OF THE ART

Es ist bekannt, bei Bürostühlen die Lehne an den Lehnenträger derart anzubinden, dass sie möglichst allen Bewegungen des Rückens des Benutzers zu folgen vermag. Technisch heißt das, dass die Lehne kardanisch gelagert, also um die drei Raumachsen beweglich ist. Damit kann sie sagittalen Bewegungen des Rückens , also Bewegungen um eine Horizontalachse parallel zum Körper, aber auch Torsionsbewegungen und Transveralbewegungen, also Bewegungen um die Vertikalachse bzw. um eine Horizontalachse senkrecht zum Körper, folgen. Derartige kombinierte Oberkörperbewegungen in drei Richtungen kommen in der Praxis sehr häufig vor, zum Beispiel beim Griff seitlich unten in die Schublade eines Schreibtisches, oder beim Hinwenden zu einem Gesprächspartner. Kardanische Lager für Lehnen bei Stühlen werden auch als "dorsokinetisch flexible Gelenke" bezeichnet. It is known that the backrest on the backrest support in the case of office chairs tie up as much as possible all movements of the user's back is able to follow. Technically, this means that the backrest is gimbal-mounted, that is is movable around the three spatial axes. It can do sagittal movements of the back, i.e. movements around a horizontal axis parallel to the body, but also torsional and transversal movements, i.e. movements about the vertical axis or about a horizontal axis perpendicular to the body, consequences. Such combined upper body movements in three directions occur very frequently in practice, for example with the handle on the side at the bottom Drawer of a desk, or when turning to one Interlocutor. Cardanic bearings for armrests are also called called "dorsokinetically flexible joints".

Ein Stuhl der geschilderten Art ist z.B. aus der EP-A 0308538 bekannt. Bei diesem bekannten Stuhl wird die kardanische Lagerung dadurch erreicht, dass die Lehne eine kugelsegmentförmige Ausformung aufweist, die in einer zweiten kugelsegmentförmigen Ausformung am Lehnenträger gelagert ist. Der Mittelpunkt, um den sich die Lehne bewegen kann, liegt an der Polsteroberfläche. Seitlich und oberhalb und unterhalb des Kardangelenkes sind Federelemente zwischen Lehne und Lehnenträger vorgesehen, z.B. elastische Polyester-Elemente, die Federkräfte sowohl senkrecht als auch parallel zur Lehnenfläche ausüben.A chair of the type described is e.g. known from EP-A 0308538. at this known chair the gimbal is achieved in that the back has a spherical segment-shaped shape, which is in a second spherical segment shape is mounted on the backrest support. The The center point around which the backrest can move is on the upholstery surface. To the side and above and below the universal joint are spring elements between the backrest and backrest support, e.g. elastic polyester elements, the spring forces both perpendicular and parallel to the backrest surface exercise.

Dieser bekannte Stuhl bietet zwar einen hervorragenden Sitzkomfort, bedingt aber einen gewissen Aufwand bei seiner Herstellung.This well-known chair offers excellent seating comfort, conditionally but some effort in its manufacture.

Ein anderer Stuhl mit kardanisch gelagerter Lehne ist bekannt aus EP-A 0935934. Die kardanische Lagerung wird dort mittels eines kreiszylindrischen gummielastischen Elementes erreicht, an dessen zwei Stirnseiten jeweils eine Stahlplatte anvulkanisiert ist, die mit der Lehne bzw. dem Lehnenträger durch Schrauben verbunden ist. Der Benutzer kann damit die Lehne gegen die Federkräfte des gummielastischen Elementes bewegen. Zusätzlich kann noch der Lehnenträger gegen eine Rückholfeder nach hinten gedrückt werden. An seiner Benutzeroberfläche ist das Polster prinzipiell steif ausgeführt und im Bereich des Gummilagers geknickt.Another chair with a gimbal backrest is known from EP-A 0935934. The gimbal is there by means of a achieved circular cylindrical rubber-elastic element, on its two A steel plate is vulcanized on the end faces, which is connected to the backrest or the Backrest support is connected by screws. The user can use it Move the backrest against the spring forces of the rubber-elastic element. In addition, the backrest support can be moved backwards against a return spring be pressed. The cushion is basically rigid on its user interface executed and kinked in the area of the rubber bearing.

Dieser bekannte Stuhl weist zwar den Vorteil auf, dass das Kardanlager weniger Einzelteile umfasst, und damit kostengünstiger herstellbar ist. Durch die konventionelle Gestaltung der Benutzeroberfläche des Lehnenpolsters wird aber keine optimale Stützung des Rückens des Benutzers erzielt. Ferner ist auch die Anlenkung des Lehnenträgers an der Stuhlsäule und die Anbindung an eine Rückholfeder sehr aufwendig und damit kostenungünstig. Schließlich ist es auch nachteilig, dass das gummielastische Lager keinen Abreißschutz bietet: wenn sich die an das gummielastische Element anvulkanisierten Platten lösen sollten, fällt die Lehne vom Lehnenträger ab. This known chair has the advantage that the gimbal bearing less Includes individual parts, and is therefore cheaper to manufacture. Through the conventional design of the user interface of the backrest cushion is optimal support of the user's back is not achieved. Furthermore, the Linking the backrest support to the chair column and connecting to a Return spring very complex and therefore inexpensive. After all, it is disadvantageous that the rubber-elastic bearing offers no tear-off protection: if the plates vulcanized to the rubber-elastic element should come loose, the backrest falls off the backrest support.

DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION

Es ist daher die Aufgabe der Erfindung, eine kardanisch gelagerte und über Federelemente gestützte Rückenlehne derart auszubilden, dass sie einerseits dem Rücken des Benutzers bei allen möglichen Bewegungen, sei es sagittal, transversal oder tordierend, optimale Stützung bietet, andererseits aber dennoch kostengünstig herstellbar ist. Ferner soll auch eine hohe Stabilität der Konstruktion im robusten Alltagsbetrieb gewährleistet sein. Schließlich soll die erfindungsgemäße Rückenlehne auch ästhetisch, unter den Kriterien des industriellen Designs, eine optimale Lösung darstellen.It is therefore the object of the invention, a gimballed and over Form spring-supported backrest such that they on the one hand the user's back in all possible movements, be it sagittal, transversal or twisting, provides optimal support, but on the other hand nevertheless is inexpensive to manufacture. Furthermore, a high stability of the Construction in robust everyday operation. After all, the backrest according to the invention also aesthetically, under the criteria of industrial designs, an optimal solution.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 und der Unteransprüche gelöst.This object is achieved by the features of claim 1 and Subclaims resolved.

Der Kern der Erfindung ist die Idee, die Lehne aus einem Rahmen und einer darin aufgespannten Membran aufzubauen, und den Rahmen derart zu gestalten, dass er einerseits die Membran optimale Stützungskräfte für den Rücken des Benutzers entfalten lässt, andererseits aber in eleganter Weise und technisch kostengünstig und stabil die kardanische Verbindung zwischen Lehne und Lehnenträger ermöglicht.The essence of the invention is the idea of the back of a frame and one in it build up stretched membrane, and to design the frame so that on the one hand, the membrane provides optimal support for the back of the Let users unfold, but on the other hand in an elegant and technical way the gimbal connection between backrest and Backrest supports.

Dadurch ist es möglich, die Rückenlehne samt Träger und dorsokinetisch flexiblem Gelenk als Sichtteil, also ohne besondere Verkleidung, auszubilden, was nicht nur die Zahl der Einzelteile und damit den Herstellaufwand reduziert, sondern auch gestalterisch prägt und einen hohen Wiedererkennungswert realisiert.This makes it possible for the backrest including the support and dorsokinetic to form a flexible joint as a visible part, i.e. without special cladding, which not only reduces the number of individual parts and thus the manufacturing effort, but also in terms of design and a high recognition value realized.

Auch die Zahl der konstruktiven Elemente des dorsokinetisch flexiblen Gelenkes ist auf ein Minimum reduziert, und drückt damit den Herstellaufwand. Dennoch verfügt die erfindungsgemäße Rückenlehne aber über einen Abreißschutz: selbst bei einem Ablösen der anvulkanisierten Stahlplatten fällt die Lehne nicht herab, sondern bleibt am Träger befestigt. Also the number of constructive elements of the dorsokinetically flexible joint is reduced to a minimum, thus reducing production costs. Yet but the backrest according to the invention has a tear-off protection: itself when the vulcanized steel plates are detached, the backrest does not fall down, but remains attached to the carrier.

KURZE BESCHREIBUNG DER ZEICHNUNGENBRIEF DESCRIPTION OF THE DRAWINGS

Nachstehend wird die Erfindung anhand eines in Zeichnungen dargestellten Ausführungsbeispiels näher erläutert. Dabei zeigt:

Fig. 1
die Gesamtdarstellung eines Stuhles mit einer nach der Erfindung gestalteten Rückenlehne,
Fig.2
die Ansicht von hinten einer Rückenlehne nach der Erfindung,
Fig.3
einen Längsschnit durch eine dorsokinetisch flexibles Gelenk nach der Erfindung in einer ersten Stellung des Drehreglers, und
Fig. 4
eine Darstellung wie in Fig. 3, jedoch in einer zweiten Darstellung des Drehreglers.
The invention is explained in more detail below on the basis of an exemplary embodiment shown in the drawings. It shows:
Fig. 1
the overall view of a chair with a backrest designed according to the invention,
Fig.2
the rear view of a backrest according to the invention,
Figure 3
a longitudinal section through a dorsokinetically flexible joint according to the invention in a first position of the control dial, and
Fig. 4
a representation as in Fig. 3, but in a second representation of the rotary controller.

WEGE ZUR AUSFÜHRUNG DER ERFINDUNGWAYS OF CARRYING OUT THE INVENTION

In Fig. 1 ist ein Bürostuhl in Seitenansicht dargestellt, der eine Rückenlehne mit einem Seitenteil 1, einen Lehnenträger 2, ein dorsokinetisch flexibles Gelenk 3, ein Untergestell mit Rollen 14, eine Säule 15, eine Neigemechanik 16, und einen Sitz 17 umfasst. Der Lehnenträger 2 ist mit der Neigemechanik 16 und dem Sitz 17 derart gelenkig verbunden, dass sich beim Absenken des hinteren Teils des Sitzes 17 synchron eine Neigung des Lehnenträgers 2 ergibt. Die Einzelheiten einer solchen Mechanik mit Synchronsteuerung von Sitz und Lehne sind bekannt z.B. aus der DE-A 196 40 564. Das Seitenteil 1 der Rückenlehne weist eine längs verlaufende Nut 4 auf. Im dorsokinetisch flexiblen Gelenk 3 ist der Drehregler 9 gezeigt.In Fig. 1 an office chair is shown in side view, which has a backrest a side part 1, a backrest support 2, a dorsokinetically flexible joint 3, a base with rollers 14, a column 15, a tilt mechanism 16, and one Seat 17 includes. The backrest support 2 is with the tilt mechanism 16 and the seat 17 articulated so that when lowering the rear part of the Seat 17 synchronously gives an inclination of the backrest support 2. The details such a mechanism with synchronous control of the seat and backrest are known e.g. from DE-A 196 40 564. The side part 1 of the backrest has a lengthways extending groove 4. The rotary control 9 is in the dorsokinetically flexible joint 3 shown.

In Fig. 2 ist zu sehen, wie die Seitenteile 1 der Rückenlehne mittels eines unteren Querstegs 6 und eines oberen Querstegs 18 einen Rahmen bilden, in dem die Membran 5 aufgespannt ist. Der Rahmen besteht vorzugsweise aus Kunststoff. Die Membran 5 besteht vorzugsweise aus einem elastischen Gewebe. Sie hat kederumfasste Seitenkanten, mittels derer sie in die Nuten 4 an den beiden Seitenteilen 1 des Rahmens eingeclipst ist. In Fig. 2 it can be seen how the side parts 1 of the backrest by means of a lower one Cross bar 6 and an upper cross bar 18 form a frame in which the Membrane 5 is stretched. The frame is preferably made of plastic. The membrane 5 is preferably made of an elastic fabric. she has welted side edges, by means of which they into the grooves 4 on the two Side parts 1 of the frame is clipped.

Der obere Quersteg 18 verbindet die beiden Seitenteile 1 des Rahmens an ihren oberen Enden, der untere Quersteg 6 verbindet die beiden Seitenteile 1 in Höhe der Lendenwirbel des Benutzers. Auf diese Weise kann dem Rückenlehnen-Rahmen bei minimalem Materialaufwand eine hohe Stabilität erteilt werden, und kann insbesondere die Spannung der Membran 5 im Bereich des unteren Querstegs 6, und damit im kritischen Lendenwirbel-Bereich des Benutzers, am größten gemacht werden. Desgleichen ist das dorsokinetisch flexible Gelenk 3 im Lendenwirbelbereich angeordnet. Durch diese Gesamtkombination der für die Stützung des Rückens wesentlichen Elemente ergibt sich ein optimaler Sitzeffekt. Außerdem wirkt diese Gesamtkombination trotz ihrer Stabilität und Robustheit leicht und transparent.The upper crossbar 18 connects the two side parts 1 of the frame at their upper ends, the lower crosspiece 6 connects the two side parts 1 in height the user's lumbar vertebra. This way the backrest frame a high degree of stability can be achieved with minimal material expenditure, and can in particular the tension of the membrane 5 in the region of the lower Cross bar 6, and thus in the critical lumbar region of the user, on largest are made. Likewise, the dorsokinetically flexible joint 3 in Lumbar region arranged. Through this overall combination of for Supporting the back of essential elements results in an optimal seating effect. In addition, this overall combination works despite its stability and robustness light and transparent.

Zur Abrundung des hohen Sitzkomforts sind am oberen Quesrsteg 18 des Rahmens Gelenkpfannen 7 vorgesehen, in welchen neigungsverstellbar eine Nackenstütze 8 gelagert ist.To round off the high seating comfort, 18 of the Frame pans 7 are provided, in which a tilt adjustable Neck support 8 is mounted.

In Fig. 3 und Fig. 4 ist das dorsokinetisch flexible Gelenk 3 in seinen Einzelheiten dargestellt.In Fig. 3 and Fig. 4, the dorsokinetically flexible joint 3 is in its details shown.

Die Konstruktion weist einen kreiszylindrischen Gummipuffer 10 auf, der aus einem gummielastischen Werkstoff besteht, und an dessen Außenseiten Stahlplatten 11, 12 anvulkanisiert sind. Zentrisch weist der Gummipuffer 10 eine Ausnehmung auf, in der ein konifizierter Stahlring 13 angeordnet ist. Dieser bildet mit den Stahlplatten 11, 12 Hinterschneidungen. Der Stahlring 13 wird mittels der Schraube 20 mit dem unteren Quersteg 6 verschraubt und hält über den Hinterschnitt die Stahlplatte 11 am Rückenlehnenrahmen fest. Die Stahlplatte 12 ist mit dem Lehnenträger 2 verschraubt. Dadurch verfügt das dorsokinetische Gelenk 3 über einen Abreißschutz: Löst sich die Vulkanisierung zwischen Gummipuffer 10 und Stahlplatten 11, 12, so fällt die Lehne dennoch nicht ab, sondern bleibt mit dem Träger 2 wirkverbunden und funktionstüchtig.The construction has a circular cylindrical rubber buffer 10 which is made of a rubber-elastic material, and on the outside Steel plates 11, 12 are vulcanized. The rubber buffer 10 has a center Recess in which a butted steel ring 13 is arranged. This forms with the steel plates 11, 12 undercuts. The steel ring 13 is by means of Screw 20 screwed to the lower crosspiece 6 and holds over the Undercut the steel plate 11 firmly on the backrest frame. The steel plate 12 is screwed to the backrest support 2. Thereby the dorsokinetic Joint 3 via a tear-off protection: the vulcanization loosens between Rubber buffer 10 and steel plates 11, 12, so the back does not fall off, but remains effectively connected and functional with the carrier 2.

Schließlich ist in Fig. 3 und Fig. 4 noch der Drehregler 9 zu sehen: Dieser besteht aus Stahl und hat die Form eines zylindrischen Ringes, dessen Mantel abgeschrägt ist derart, dass die Höhe des Mantels auf der einen Seite etwa gleich dem Abstand zwischen Quersteg 6 und Lehnenträger 2 ist, und auf der gegenüberliegenden Seite kleiner als dieser Abstand. Steht dieser Drehregler 9 nun in der in Fig. 3 dargestellten Stellung, so blockiert er die Bewegungsmöglichkeit des oberen teils des Quersteges 6 und damit der Rückenlehne. In der in Fig. 4 dargestellten Stellung, in der der Drehregler 9 gegenüber der Stellung in Fig. 3 um 180° verdreht ist, kann sich jedoch der obere Teil der Rückenlehne frei bewegen.Finally, the rotary control 9 can also be seen in FIGS. 3 and 4: it exists made of steel and has the shape of a cylindrical ring, the jacket is bevelled such that the height of the jacket on one side is approximately is equal to the distance between crossbar 6 and backrest support 2, and on the opposite side smaller than this distance. Is this knob 9 now in the position shown in Fig. 3, it blocks the possibility of movement the upper part of the crossbar 6 and thus the backrest. In the in the position shown in Fig. 4, in which the knob 9 relative to the position in Fig. 3 is rotated by 180 °, but the upper part of the backrest can be free move.

Wie das besprochene Ausführungsbeispiel überzeugend zeigt, weist die Rückenlehne nach der Erfindung die aufgabengemäßen Vorteile vollumfänglich auf: sie bewirkt hervorragenden Sitzkomfort durch optimale Stützung des Rückens, ist mit gegenüber dem Stand der Technik erheblich reduziertem Aufwand herzustellen, und bietet vom industriellen Design her eine hohe Ästhetik und gestalterische Einprägbarkeit. As the exemplary embodiment discussed shows convincingly, the Backrest according to the invention the task-related advantages in full on: it provides excellent seating comfort by optimally supporting the Back, is significantly reduced compared to the prior art Manufacturing effort, and offers high aesthetics in industrial design and design memorability.

Bezeichnungslistename list

11
Seitenteile des Rückenlehnen-RahmensSide parts of the backrest frame
22
Lehnenträgerbackrest support
33
dorsokinetisch flexibles Gelenkdorsokinetically flexible joint
44
Nutgroove
55
Membranmembrane
66
unterer Quersteglower crossbar
77
Gelenkpfannenjoint sockets
88th
Nackenstützeheadrest
99
Drehreglerknobs
1010
Gummipufferrubber buffers
1111
erste Stahlplattefirst steel plate
1212
zweite Stahlplattesecond steel plate
1313
konifizierter Stahlringbutted steel ring
1414
Untergestell mit RollenBase with wheels
1515
Säulepillar
1616
Neigemechaniktilting mechanism
1717
SitzSeat
1818
oberer Querstegupper crossbar
1919
Schrauben am LehnenträgerScrews on the backrest support
2020
Schraube am unteren QuerstegScrew on the lower cross bar

Claims (6)

Rückenlehne für einen Stuhl, bei welchem die Lehne kardanisch und über Federlemente (10) gestützt am Lehnenträger (2) gelagert ist,
gekennzeichnet durch die folgenden Merkmale: die Lehne ist als Rahmen mit einer darin aufgespannten Membran (5) ausgebildet, der Rahmen besteht aus zwei seitlichen, im wesentlichen vertikal verlaufenden Seitenteilen (1), und zwei im wesentlichen horizontal verlaufenden, die Seitenteile (1) verbindenden Querstegen (6,18), der obere Quersteg (18) verbindet die beiden Seitenteile (1) an ihren oberen Enden, der untere Quersteg (6) verbindet die beiden Seitenteile (1) in Höhe der Lendenwirbel des Benutzers, die Membran (5) ist mindestens an den beiden Seitenteilen (1) befestigt, und die Lehne ist am Lehnenträger (2) über ein am unteren Quersteg (6) befestigtes dorsokinetisch flexibles Gelenk (3) gelagert. Backrest for a chair in which the backrest is supported by gimbals and supported on the backrest support (2) by spring elements (10),
characterized by the following features: the backrest is designed as a frame with a membrane (5) stretched therein, the frame consists of two lateral, essentially vertical side parts (1), and two essentially horizontal transverse webs (6, 18) connecting the side parts (1), the upper crosspiece (18) connects the two side parts (1) at their upper ends, the lower crosspiece (6) connects the two side parts (1) at the level of the user's lumbar vertebrae, the membrane (5) is attached at least to the two side parts (1), and the backrest is mounted on the backrest support (2) via a dorsokinetically flexible joint (3) fastened to the lower crosspiece (6). Rückenlehne nach Anspruch 1, dadurch gekennzeichnet, dass die Seitenteile (1) des Rahmens längs verlaufende Nuten (4) aufweisen, in welche die Membran (5) mit ihren kederumfassten Seitenkanten eingeclipst ist. Backrest according to claim 1, characterized in that the side parts (1) of the frame have longitudinal grooves (4) into which the membrane (5) is clipped with its keder-encompassed side edges. Rückenlehne nach Anspruch 2, dadurch gekennzeichnet, dass die Spannung der Membran (5) im Bereich des unteren Querstegs (6) am größten ist.Backrest according to claim 2, characterized in that the tension of the membrane (5) is greatest in the region of the lower crosspiece (6). Rückenlehne nach Anspruch 1, dadurch gekennzeichnet, dass an den oberen Enden der Seitenteile (1) des Rahmens Gelenkpfannen (7) vorgesehen sind, in welchen neigungsverstellbar eine Nackenstütze (8) gelagert ist.Backrest according to claim 1, characterized in that joint pans (7) are provided at the upper ends of the side parts (1) of the frame, in which an adjustable neck support (8) is mounted. Rückenlehne nach Anspruch 1, dadurch gekennzeichnet, dass das dorsokinetisch flexible Gelenk (3) einen Gummipuffer (10) mit anvulkanisierten Stahlplatten (11,12) sowie einen konifizierten Stahlring (13) umfasst, wobei der konifizierte Stahlring (13) in einer zentralen Ausnehmung des Gummipuffers (10) und der Stahlplatten (11,12) sitzt derart, dass er mit den Stahlplatten (11,12) Hinterschneidungen bildet, und sich durch Verschraubung (19,20) mit dem unteren Quersteg (6) und dem Lehnenträger (2) eine vom Halt der Stahlplatten (11,12) am Gummipuffer (10) unabhängige Verbindung zwischen Quersteg (6) und Lehnenträger (2) ergibt.Backrest according to claim 1, characterized in that the dorsokinetically flexible joint (3) comprises a rubber buffer (10) with vulcanized steel plates (11, 12) and a butted steel ring (13), the butted steel ring (13) in a central recess of the Rubber buffer (10) and the steel plates (11, 12) are seated in such a way that they form undercuts with the steel plates (11, 12) and are screwed (19, 20) to the lower crosspiece (6) and the backrest support (2) a connection between crossbar (6) and backrest support (2) which is independent of the hold of the steel plates (11, 12) on the rubber buffer (10). Rückenlehne nach Anspruch 5, dadurch gekennzeichnet, dass der Gummipuffer (10) und die Stahlplatten (11,12) von einem Drehregler (9) in Form eines zylindrischen Ringes umschlossen sind, dessen Mantel abgeschrägt ist derart, dass die Höhe des Mantels auf der einen Seite etwa gleich dem Abstand zwischen Quersteg (6) und Lehnenträger (2) ist, und auf der gegenüberliegenden Seite kleiner als dieser Abstand, vorzugsweise gleich der Hälfte dieses Abstandes ist.Backrest according to claim 5, characterized in that the rubber buffer (10) and the steel plates (11, 12) are enclosed by a rotary control (9) in the form of a cylindrical ring, the jacket of which is chamfered such that the height of the jacket on one Side is approximately equal to the distance between crosspiece (6) and backrest support (2), and on the opposite side is smaller than this distance, preferably equal to half this distance.
EP01122534A 2000-09-29 2001-09-24 Back-rest Expired - Lifetime EP1192882B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10048779A DE10048779A1 (en) 2000-09-29 2000-09-29 backrest
DE10048779 2000-09-29

Publications (3)

Publication Number Publication Date
EP1192882A2 true EP1192882A2 (en) 2002-04-03
EP1192882A3 EP1192882A3 (en) 2003-08-27
EP1192882B1 EP1192882B1 (en) 2006-03-15

Family

ID=7658426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01122534A Expired - Lifetime EP1192882B1 (en) 2000-09-29 2001-09-24 Back-rest

Country Status (4)

Country Link
EP (1) EP1192882B1 (en)
AT (1) ATE320206T1 (en)
DE (2) DE10048779A1 (en)
ES (1) ES2257368T3 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6647572B2 (en) 2002-01-11 2003-11-18 Kwang-Ho Lee Cushion having embedded therein vibrating motors
EP1447029A1 (en) * 2003-02-16 2004-08-18 Sedus Stoll AG Backrest
DE102005010533A1 (en) * 2005-03-04 2006-09-07 Bock 1 Gmbh & Co. Kg Seating furniture, in particular office chair
US7416251B2 (en) 2005-06-10 2008-08-26 Global Total Office Chair
EP1989964A1 (en) * 2007-05-09 2008-11-12 Steelcase Sa Device for attaching the back of a seat to a supporting arm
US7490901B2 (en) 2006-10-18 2009-02-17 Sedus Stoll Aktiengesellschaft Back rest for a chair
CN110650657A (en) * 2017-06-20 2020-01-03 国誉株式会社 Chair (Ref. TM. chair)

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DE10161587A1 (en) * 2001-12-14 2003-06-26 Dauphin Friedrich W Gmbh chair
DE102006002008A1 (en) * 2006-01-16 2007-07-26 GLÖCKL, Josef Connection device e.g. screw, for backrest of seating device, has flange units attached to backrest and fastening structure, and flexible unit arranged between units such that two different flexibility of units develops with each other
DE102012214642B4 (en) 2012-08-17 2017-08-17 Sedus Stoll Ag Elastomer bearings for office seating, office seating
DE102012219206B4 (en) 2012-10-22 2017-10-26 Sedus Stoll Ag Dorsokinetic backrest of a chair, seating
DE102017214298A1 (en) 2017-08-16 2019-02-21 Sedus Stoll Ag Connecting arrangement for a backrest and office or conference seating furniture

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EP0308538A1 (en) 1987-09-25 1989-03-29 Christof Stoll GmbH & Co KG Back support for a chair
EP0935934A2 (en) 1998-02-12 1999-08-18 Burkhard Vogtherr Working chair

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EP0935934A2 (en) 1998-02-12 1999-08-18 Burkhard Vogtherr Working chair

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6647572B2 (en) 2002-01-11 2003-11-18 Kwang-Ho Lee Cushion having embedded therein vibrating motors
EP1447029A1 (en) * 2003-02-16 2004-08-18 Sedus Stoll AG Backrest
AU2004200278B2 (en) * 2003-02-16 2006-09-14 Sedus Stoll Ag Backrest
US7147288B2 (en) 2003-02-16 2006-12-12 Sedus Stoll Ag Backrest
DE102005010533A1 (en) * 2005-03-04 2006-09-07 Bock 1 Gmbh & Co. Kg Seating furniture, in particular office chair
US7416251B2 (en) 2005-06-10 2008-08-26 Global Total Office Chair
US7490901B2 (en) 2006-10-18 2009-02-17 Sedus Stoll Aktiengesellschaft Back rest for a chair
EP1989964A1 (en) * 2007-05-09 2008-11-12 Steelcase Sa Device for attaching the back of a seat to a supporting arm
CN110650657A (en) * 2017-06-20 2020-01-03 国誉株式会社 Chair (Ref. TM. chair)
EP3643205A4 (en) * 2017-06-20 2020-10-21 Kokuyo Co., Ltd. Chair
US11103069B2 (en) 2017-06-20 2021-08-31 Kokuyo Co., Ltd. Chair
CN110650657B (en) * 2017-06-20 2023-06-27 国誉株式会社 Chair

Also Published As

Publication number Publication date
EP1192882B1 (en) 2006-03-15
EP1192882A3 (en) 2003-08-27
ATE320206T1 (en) 2006-04-15
DE50109202D1 (en) 2006-05-11
ES2257368T3 (en) 2006-08-01
DE10048779A1 (en) 2002-04-18

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