EP0322400A2 - Chair frame with a reclining seat and a backrest support - Google Patents

Chair frame with a reclining seat and a backrest support Download PDF

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Publication number
EP0322400A2
EP0322400A2 EP89102231A EP89102231A EP0322400A2 EP 0322400 A2 EP0322400 A2 EP 0322400A2 EP 89102231 A EP89102231 A EP 89102231A EP 89102231 A EP89102231 A EP 89102231A EP 0322400 A2 EP0322400 A2 EP 0322400A2
Authority
EP
European Patent Office
Prior art keywords
backrest
support
chair frame
chair
seat
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
EP89102231A
Other languages
German (de)
French (fr)
Other versions
EP0322400B1 (en
EP0322400A3 (en
Inventor
Hermann Locher
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.)
Giroflex Entwicklungs AG
Original Assignee
Giroflex Entwicklungs AG
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Filing date
Publication date
Application filed by Giroflex Entwicklungs AG filed Critical Giroflex Entwicklungs AG
Priority to AT8989102231T priority Critical patent/ATE104835T1/en
Publication of EP0322400A2 publication Critical patent/EP0322400A2/en
Publication of EP0322400A3 publication Critical patent/EP0322400A3/en
Application granted granted Critical
Publication of EP0322400B1 publication Critical patent/EP0322400B1/en
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Expired - Lifetime legal-status Critical Current

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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
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03283—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with fluid springs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs
    • 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
    • A47C7/443—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs
    • 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
    • A47C7/443—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs
    • A47C7/444—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs of torsion type
    • 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
    • A47C7/446—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with fluid springs

Definitions

  • the seat support and the backrest support are pivoted at one end to a support part at a distance from each around a horizontal axis, the seat part being connected at its other end to the backrest support by a swivel joint.
  • the backrest support tilts at a greater angle than the seat part, one of the swivel joints additionally being designed as a sliding joint or an additional connecting bracket on one of the swivel joints.
  • the greater inclination of the backrest support causes the known pull-out effect, i.e. the clothing of the chair user is pulled up when tilted backwards.
  • the automatic displacement of the backrest which takes place as a function of the backward inclination of the seat support, is achieved by means of a linkage which is articulated on the swivel joint of the backrest support and is coupled to the end of the backrest support on the support part.
  • This linkage takes up a lot of space and is because it is under the seat extends to the knee-side seat end, not only space-consuming but also costly.
  • a simplification of the linkage can be achieved if the displacement of the backrest which takes place as a function of the backward inclination of the seat carrier is carried out in accordance with the solution described in the parent application.
  • each additional linkage represents an additional effort, and it is an object of the invention to further develop chair frames of the type described in the preamble of claims 1-3 so that the chair frame offers sufficient comfort even without a sliding backrest.
  • the chair shown in Fig. 1 is supported on a support part 1, which usually represents part of a mostly mobile, only indicated foot frame 2.
  • a seat support 3 and a backrest part 4 are mounted on the support part 1, the seat support 3 having its knee-side end being pivotably mounted on the support part 1 by means of a swivel joint 5.
  • the backrest part 4 is articulated by means of a swivel joint 6 to a lever, which in turn is pivotably mounted in the support part 1 by means of a further swivel joint 8 at a distance from the swivel joint of the seat support 3.
  • the seat support 3 and the backrest part 4 are rotatably connected to one another on the backrest side by means of a swivel joint 9.
  • the lever 7 is designed as a cantilever arm 10, at the free end of which one end of a spring member 11 is supported.
  • the other end of the spring member 11 is supported on the support part 1, wherein it is articulated on the knee-side pivot joint 5 of the seat support 3 or is supported on the support part 1 in the vicinity of this pivot joint. If the backrest part 4 moves by a certain amount, this is increased at the free end of the arm 10, so that the spring travel of the spring member 11 is increased accordingly.
  • the seat support 3 projects with an extension 12 beyond the swivel joint 9 on the backrest.
  • a link chain 15 is coupled by means of a swivel joint 16, which is composed of three articulated links 17, 18, 19.
  • the link 19 is connected at its free end to a slide 20 which is guided on the backrest support 4 and carries a backrest 21, shown schematically by a broken line.
  • the seat support 3 moves around the knee-side swivel joint 5 in the direction of arrow a and the backrest support 4 around the backrest-side swivel joint 9 in the arrow direction A, the inclination of the backrest support 4 being greater than that of the seat support 3.
  • the link chain 15 is adjusted so that the slider 20 moves down with the backrest 21.
  • the middle link 18 is pivotally mounted in the backrest support 4 by means of a swivel joint 22.
  • the link 18 thus forms a two-armed lever, by means of which the inclination of the link 17 is reduced when the backrest support 4 is tilted back and thus causes the slide 20 to move downward.
  • the link 19 only serves to prevent a clamping end of the slide 20 on its guide.
  • one arm of the lever 7 connects the backrest part 4 to the support part 1.
  • the arm located between the swivel joints 6, 8 is accordingly a tab through which the backward inclination of the two supports 3, 4 is free of jamming and without formation of a Swivel joint is made possible as an additional sliding joint.
  • Fig. 1 the space-saving and simple solution of the displacement of the slide 20 with the backrest 21 can be seen.
  • the space below the seat support 3 can be used for the arrangement of other parts, the effect of the spring member 11 also being increased by using the lever 7, since this translates the movement of the backrest support 4.
  • FIGS. 2-4 show that additional spring means or rods can be used for their actuation, as will be shown below.
  • the seat support 3 mounted in the knee-side swivel joint 5 is connected on the backrest side with a bracket 25 and two swivel joints 9, 13 to the backrest support, with which the backrest support 4 can be pivotably mounted on the support part 1 by means of the swivel joint 8 without a sliding joint having to be provided.
  • the backrest support 4 here has an arm 23 projecting from the swivel joint 8, on the free end of which the spring member 11 is supported. Further spring means are attached on the backrest side, see a tension spring 26 which is fastened on the one hand to the backrest support 4 and on the other hand to the supporting part 1. If further spring means are required, it is also possible to arrange a torsion spring in the knee-side swivel joint 5 of the seat support 3 and in the swivel joint 8.
  • the spring means always have the task of moving the chair into the normal or working position when it is relieved. It is desirable to be able to actuate the spring means 11 arranged in the knee area, in particular a gas pressure spring, in order to block the chair in a certain position, for example in the backward inclined position. The actuation can be made easily accessible because of the location of the spring means.
  • one end of the spring means 11 is supported on a pair of tabs 30, 31, of which the tab 30 is supported on the backrest-side swivel 9 of the two supports 3, 4 and the tab 31 on the support part 1.
  • the spring travel of the spring means 11 can be varied.
  • a tension spring 27 is supported on the one hand on the pair of tabs 30, 31 and on the other hand on the support part 1.
  • the two supports 3, 4 are connected to one another on the backrest side by the tab 25 and are pivotably mounted on the supporting part 1 by the swivel joints 5, 8.
  • a pair of tabs 32, 33 is provided, of which the tab 32 is pivotally mounted on the pivot 9 of the seat support 3 on the backrest and the tab 33 on the pivot 8 of the back support 4 in the seat part 1.
  • the chair frames described have a relatively small volume of rod parts under the seat support.
  • the inevitable "duck belly” in other constructions due to the arrangement of voluminous and bulky rod parts under the seat support can be avoided in the present construction.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Pyridine Compounds (AREA)
  • Steroid Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Seats For Vehicles (AREA)
  • Special Chairs (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)

Abstract

A reclining seat support (3) and a backrest support (4) are hinged on a chair frame with a support part (1) via a lever (7) by means of hinges (5, 8). Coupled to the backrest-side end of the seat support (3) is a link chain (15) which is connected at its other end to a slide (20) and a backrest (21). The link chain (15) causes the slide (20) to be moved downwards with the backrest when the chair is reclined. By this means, the pulling-out effect during the transition from the normal position into the reclined position of the lever is eliminated. However, if the chair frame is used as a chair without a link chain (15), although slightly less seating comfort is achieved by the reclining seat support, the expenditure is correspondingly less. <IMAGE>

Description

Stühle mit rückwärts neigbarem Sitzträger und Rückenlehnenträger sind in verschiedenen Ausführungen bekannt. In der einfachsten, bekannten Ausführungsform sind der Sitzträger und der Rückenlehnenträger mit ihrem einen Ende an einem Tragteil mit Abstand um je eine horizontale Achse schwenkbar angelenkt, wobei der Sitzteil an seinem andern Ende durch ein Drehgelenk mit dem Rückenlehnenträger verbunden ist. Beim Rückwärtsneigen des Sitzteils neigt sich der Rückenlehnenträger um einen grösseren Winkel als der Sitzteil, wobei hierfür eines der Drehgelenke zusätzlich als Schiebegelenk auszubilden oder eine zusätzliche Verbindungslasche an einem der Drehgelenke anzuordnen ist. Die grössere Neigung des Rückenlehnenträgers bewirkt den bekannten Auszieheffekt, d.h. die Kleidung des Stuhlbenützers wird bei der Rückwärtsneigung nach oben gezogen.Chairs with a reclining seat support and backrest support are known in various designs. In the simplest known embodiment, the seat support and the backrest support are pivoted at one end to a support part at a distance from each around a horizontal axis, the seat part being connected at its other end to the backrest support by a swivel joint. When the seat part is tilted backwards, the backrest support tilts at a greater angle than the seat part, one of the swivel joints additionally being designed as a sliding joint or an additional connecting bracket on one of the swivel joints. The greater inclination of the backrest support causes the known pull-out effect, i.e. the clothing of the chair user is pulled up when tilted backwards.

Um den Auszieheffekt zu vermeiden, ist es bekannt (PCT-Anmeldung WO 83/00610), an dem Rückenlehnenträger eine in der Höhe verschiebbare Rückenlehne anzuordnen, die bei der Rückwärtsneigung des Sitzträgers in entsprechendem Mass abwärtsgeführt wird, so dass kein Auszieheffekt auftritt.In order to avoid the pull-out effect, it is known (PCT application WO 83/00610) to arrange a height-adjustable backrest on the backrest support, which is guided downwards to an appropriate extent when the seat support is tilted backwards, so that no pull-out effect occurs.

Die selbsttätige in Abhängigkeit der Rückwärtsneigung des Sitzträgers erfolgende Verschiebung der Rückenlehne wird durch ein Gestänge erreicht, das an dem tragteilseitigen Drehgelenk des Rückenlehnenträgers angelenkt und mit dem tragteilseitigen Ende des Rückenlehnenträgers gekoppelt ist. Dieses Gestänge benötigt verhältnismässig viel Platz und ist, da es sich unter der Sitzfläche bis gegen das knieseitige Sitzende erstreckt, nicht nur platz-, sondern auch kostenaufwendig.The automatic displacement of the backrest, which takes place as a function of the backward inclination of the seat support, is achieved by means of a linkage which is articulated on the swivel joint of the backrest support and is coupled to the end of the backrest support on the support part. This linkage takes up a lot of space and is because it is under the seat extends to the knee-side seat end, not only space-consuming but also costly.

Ein Vereinfachung des Gestänges kann erreicht werden, wenn die in Abhängigkeit der Rückwärtsneigung des Sitzträgers erfolgende Verschiebung der Rückenlehne entsprechend der in der Stammanmeldung beschriebenen Lösung ausgeführt wird. Aber jedes zusätzliche Gestänge stellt einen Mehraufwand dar, und es ist Aufgabe der Erfindung, Stuhlgestelle der im Oberbegriff der Patentansprüche 1-3 beschriebenen Art so weiter auszugestalten, dass das Stuhlgestell auch ohne verschiebbare Rückenlehne einen ausreichenden Komfort bietet.A simplification of the linkage can be achieved if the displacement of the backrest which takes place as a function of the backward inclination of the seat carrier is carried out in accordance with the solution described in the parent application. But each additional linkage represents an additional effort, and it is an object of the invention to further develop chair frames of the type described in the preamble of claims 1-3 so that the chair frame offers sufficient comfort even without a sliding backrest.

Diese Aufgabe wird gemäss der Erfindung durch die kennzeichnenden Merkmale der Patentansprüche 1-3 erreicht.This object is achieved according to the invention by the characterizing features of claims 1-3.

Die Erfindung ist in der Zeichnung mit vier verschiedenen Stuhlgestellvarianten dargestellt, von denen eine Variante mit einer verschiebbaren Rückenlehne ergänzt ist. Alle Figuren stellen kinematische Ersatzbilder eines Stuhls bzw. Stuhlgestelle dar. Demgemäss sind die einzelnen Teile nur einmal gezeichnet, obwohl sie je nach der konstruktiven Ausbildung einfach oder auch mehrfach vorkommen können. Es wird hierzu auf die bereits erwähnte PCT-­Anmeldung, insbesondere Fig. 3 bis 5, und auf die EP 136 374, insbesondere Fig. 2 bis 4, verwiesen. Es zeigen:

  • Fig. 1 einen rückwärts neigbaren Stuhl (bzw. dessen kinematisches Ersatzbild) mit verschiebbarer Rückenlehne,
  • Fig. 2 eine erste Variante des Stuhlgestells des Stuhls nach Fig. 1,
  • Fig. 4 eine dritte Variante des Stuhlgestells des Stuhls nach Fig. 1.
The invention is shown in the drawing with four different chair frame variants, one of which is supplemented with a sliding backrest. All figures represent kinematic substitute pictures of a chair or chair frames. Accordingly, the individual parts are only drawn once, although they can occur once or several times depending on the design. For this, reference is made to the PCT application already mentioned, in particular FIGS. 3 to 5, and to EP 136 374, in particular FIGS. 2 to 4. Show it:
  • 1 is a backward-tilting chair (or its kinematic replacement image) with a sliding backrest,
  • 2 shows a first variant of the chair frame of the chair according to FIG. 1,
  • 4 shows a third variant of the chair frame of the chair according to FIG. 1.

Der in Fig. 1 dargestellte Stuhl ist auf einem Tragteil 1 abgestützt, der gewöhnlich einen Teil eines meist fahrbaren, nur angedeuteten Fussgestells 2 darstellt. Am Tragteil 1 sind ein Sitzträger 3 und ein Rückenlehnenteil 4 gelagert, wobei der Sitzträger 3 mit seinem knieseitigen Ende mittels eines Drehgelenkes 5 am Tragteil 1 schwenkbar gelagert ist. Der Rückenlehnenteil 4 ist mittels eines Drehgelenkes 6 an einem Hebel angelenkt, der seinerseits mittels eines weiteren Drehgelenkes 8 im Abstand vom Drehgelenk des Sitzträgers 3 im Tragteil 1 schwenkbar gelagert ist.The chair shown in Fig. 1 is supported on a support part 1, which usually represents part of a mostly mobile, only indicated foot frame 2. A seat support 3 and a backrest part 4 are mounted on the support part 1, the seat support 3 having its knee-side end being pivotably mounted on the support part 1 by means of a swivel joint 5. The backrest part 4 is articulated by means of a swivel joint 6 to a lever, which in turn is pivotably mounted in the support part 1 by means of a further swivel joint 8 at a distance from the swivel joint of the seat support 3.

Alle hier beschriebenen Drehgelenke, so auch die Drehgelenke 5, 6, 8, sind mit horizontaler Drehachse angeordnet, was in der weiteren Beschreibung nicht mehr besonders erwähnt wird.All the rotary joints described here, including the rotary joints 5, 6, 8, are arranged with a horizontal axis of rotation, which is no longer mentioned in the further description.

Der Sitzträger 3 und der Rückenlehnenteil 4 sind rückenlehnenseitig mittels eines Drehgelenkes 9 miteinander drehbar verbunden. Der Hebel 7 ist als auskragender Arm 10 ausgebildet, an dessen freiem Ende das eine Ende eines Federgliedes 11 abgestützt ist. Das andere Ende des Federgliedes 11 ist am Tragteil 1 abgestützt, wobei es am knieseitigen Drehgelenk 5 des Sitzträgers 3 angelenkt oder in der Nähe dieses Drehgelenkes am Tragteil 1 abgestützt ist. Bewegt sich der Rückenlehnenteil 4 um einen bestimmten Betrag, wird dieser am freien Ende des Armes 10 vergrössert, so dass der Federweg des Federgliedes 11 entsprechend vergrössert wird.The seat support 3 and the backrest part 4 are rotatably connected to one another on the backrest side by means of a swivel joint 9. The lever 7 is designed as a cantilever arm 10, at the free end of which one end of a spring member 11 is supported. The other end of the spring member 11 is supported on the support part 1, wherein it is articulated on the knee-side pivot joint 5 of the seat support 3 or is supported on the support part 1 in the vicinity of this pivot joint. If the backrest part 4 moves by a certain amount, this is increased at the free end of the arm 10, so that the spring travel of the spring member 11 is increased accordingly.

Der Sitzträger 3 ragt mit einer Verlängerung 12 über das rückenlehnenseitige Drehgelenk 9 hinaus.Am freien Ende dieser Verlängerung ist eine Gliederkette 15 mittels eines Drehgelenkes 16 angekuppelt, die sich aus drei, gelenkig miteinander verbundenen Gliedern 17, 18, 19 zusammensetzt. Das Glied 19 ist an seinem freien Ende mit einem Schieber 20 verbunden, der auf dem Rückenlehnenträger 4 geführt ist und eine, durch eine gestrichelte Linie schematisch dargestellte Rückenlehne 21 trägt.The seat support 3 projects with an extension 12 beyond the swivel joint 9 on the backrest. At the free end of this extension, a link chain 15 is coupled by means of a swivel joint 16, which is composed of three articulated links 17, 18, 19. The link 19 is connected at its free end to a slide 20 which is guided on the backrest support 4 and carries a backrest 21, shown schematically by a broken line.

Beim Zurückneigen des Stuhls bewegt sich der Sitzträger 3 um das knieseitige Drehgelenk 5 in Pfeilrichtung a und der Rückenlehnenträger 4 um das rückenlehnenseitige Drehgelenk 9 in Pfeilrichtung A, wobei die Neigung des Rückenlehnenträgers 4 grösser ist als diejenige des Sitzträgers 3. Durch die Relativbewegung zwischen den beiden Trägern 3, 4 wird die Gliederkette 15 so verstellt, dass sich der Schieber 20 mit der Rückenlehne 21 abwärts bewegt. Dies wird dadurch erreicht, dass das mittlere Glied 18 mittels eines Drehgelenkes 22 im Rückenlehnenträger 4 schwenkbar gelagert ist. Das Glied 18 bildet somit einen zweiarmigen Hebel, durch den die Neigung des Gliedes 17 beim Zurückneigen des Rückenlehnenträgers 4 verringert und damit die Abwärtsbewegung des Schiebers 20 bewirkt. Das Glied 19 dient nur dazu, ein Klemmende des Schiebers 20 auf seiner Führung zu verhindern.When the chair is tilted back, the seat support 3 moves around the knee-side swivel joint 5 in the direction of arrow a and the backrest support 4 around the backrest-side swivel joint 9 in the arrow direction A, the inclination of the backrest support 4 being greater than that of the seat support 3. Due to the relative movement between the two Beams 3, 4, the link chain 15 is adjusted so that the slider 20 moves down with the backrest 21. This is achieved in that the middle link 18 is pivotally mounted in the backrest support 4 by means of a swivel joint 22. The link 18 thus forms a two-armed lever, by means of which the inclination of the link 17 is reduced when the backrest support 4 is tilted back and thus causes the slide 20 to move downward. The link 19 only serves to prevent a clamping end of the slide 20 on its guide.

Beim Stuhl nach Fig. 1 verbindet der eine Arm des Hebels 7 den Rückenlehnenteil 4 mit dem Tragteil 1. Der zwischen den Drehgelenken 6, 8 gelegene Arm ist demnach eine Lasche, durch die die Rückwärtsneigung der beiden Träger 3, 4 klemmungsfrei und ohne Ausbildung eines Drehgelenkes als zusätzliches Schiebegelenk ermöglicht wird. Aus Fig. 1 ist weiter die platzsparende und einfache Lösung der Verschiebung des Schiebers 20 mit der Rückenlehne 21 erkennbar. Der Platz unterhalb des Sitzträgers 3 kann für die Anordnung anderer Teile verwendet werden, wobei auch die Wirkung des Federgliedes 11 durch Verwendung des Hebels 7 vergrössert wird, da dadurch die Bewegung des Rückenlehnenträgers 4 übersetzt wird.In the chair according to FIG. 1, one arm of the lever 7 connects the backrest part 4 to the support part 1. The arm located between the swivel joints 6, 8 is accordingly a tab through which the backward inclination of the two supports 3, 4 is free of jamming and without formation of a Swivel joint is made possible as an additional sliding joint. From Fig. 1, the space-saving and simple solution of the displacement of the slide 20 with the backrest 21 can be seen. The space below the seat support 3 can be used for the arrangement of other parts, the effect of the spring member 11 also being increased by using the lever 7, since this translates the movement of the backrest support 4.

In Fig. 2-4 ist nur noch das Stuhlgestell, d.h. der Stuhl ohne die Gliederkette 15 und Schieber 20, dargestellt. Selbstverständlich ist es ohne weiteres möglich, auch an diesen Stuhlgestellen die Gliederkette 15 mit dem Schieber 20 anzubringen, um damit auch bei diesen Ausführungsformen den Auszieheffekt zu eliminieren. Im übrigen zeigen die Ausführungen nach Fig. 1-4, dass unter dem Sitzträger 3 freier Platz entsteht, wenn für das Verschieben der Rückenlehne 21 kein Gestänge in den Bereich des Tragteiles 1 geführt werden muss, sondern die ausserhalb des Sitzträgers 3 liegende Gliederkette 15 verwendet werden kann.2-4, only the chair frame, ie the chair without the link chain 15 and slide 20, is shown. Of course, it is also easily possible to attach the link chain 15 with the slider 20 to these chair frames, in order to eliminate the pull-out effect in these embodiments as well. in the 1-4 show that there is free space under the seat support 3 if no linkage has to be guided into the area of the support part 1 for the displacement of the backrest 21, but the link chain 15 lying outside the seat support 3 is used can.

Im weitern zeigen Fig. 2-4, dass dadurch zusätzliche Federmittel oder Gestänge für deren Betätigung eingesetzt werden können, wie noch nachfolgend gezeigt wird.Furthermore, FIGS. 2-4 show that additional spring means or rods can be used for their actuation, as will be shown below.

Beim Stuhlgestell nach Fig 2 sind gleiche Teile mit den gleichen Bezugszeichen wie in Fig. 1 versehen. Der im knieseitigen Drehgelenk 5 gelagerte Sitzträger 3 ist rückenlehnenseitig mit einer Lasche 25 und zwei Drehgelenken 9, 13 mit dem Rückenlehnenträger verbunden, womit der Rückenlehnenträger 4 mittels des Drehgelenkes 8 am Tragteil 1 schwenkbar gelagert werden kann, ohne dass ein Schiebegelenk vorgesehen werden müsste. Der Rückenlehnenträger 4 weist hierbei einen vom Drehgelenk 8 auskragenden Arm 23 auf, an dessen freiem Ende das Federglied 11 abgestützt ist. Weitere Federmittel sind rücklehnenseitig angebracht, siehe eine Zugfeder 26, die einerseits am Rückenlehnenträger 4 und andererseits am Tragteil 1 befestigt ist. Sind weitere Federmittel erforderlich, ist es auch möglich, im knieseitigen Drehgelenk 5 des Sitzträgers 3 und im Drehgelenk 8 eine Torsionsfeder anzuordnen.In the chair frame according to FIG. 2, the same parts are provided with the same reference numerals as in FIG. 1. The seat support 3 mounted in the knee-side swivel joint 5 is connected on the backrest side with a bracket 25 and two swivel joints 9, 13 to the backrest support, with which the backrest support 4 can be pivotably mounted on the support part 1 by means of the swivel joint 8 without a sliding joint having to be provided. The backrest support 4 here has an arm 23 projecting from the swivel joint 8, on the free end of which the spring member 11 is supported. Further spring means are attached on the backrest side, see a tension spring 26 which is fastened on the one hand to the backrest support 4 and on the other hand to the supporting part 1. If further spring means are required, it is also possible to arrange a torsion spring in the knee-side swivel joint 5 of the seat support 3 and in the swivel joint 8.

In den dargestellten Ausführungsformen des Stuhls und der Stuhlgestelle haben die Federmittel immer die Aufgabe, den Stuhl bei seiner Entlastung in die Normal- oder Arbeitsstellung zu bewegen. Dabei ist es erwünscht, die im Kniebereich angeordneten Federmittel 11, insbesondere eine Gasdruckfeder, betätigen zu können, un damit den Stuhl in einer bestimmten Lage, z.B. in der rückwärtsgeneigten Lage zu blockieren. Hierbei kann die Betätigung wegen der Lage der Federmittel leicht zugänglich gestaltet werden.In the illustrated embodiments of the chair and the chair frames, the spring means always have the task of moving the chair into the normal or working position when it is relieved. It is desirable to be able to actuate the spring means 11 arranged in the knee area, in particular a gas pressure spring, in order to block the chair in a certain position, for example in the backward inclined position. The actuation can be made easily accessible because of the location of the spring means.

Beim Stuhlgestell nach Fig. 3 ist das eine Ende der Federmittel 11 an einem Laschenpaar 30, 31 abgestützt, von dem die Lasche 30 am rückenlehnenseitigen Drehgelenk 9 der beiden Träger 3, 4 und die Lasche 31 am Tragteil 1 abgestützt sind. Mit dem Laschenpaar 30, 31 kann der Federweg der Federmittel 11 variiert werden. Im weitern ist noch eine Zugfeder 27 einerseits an dem Laschenpaar 30, 31 und andererseits am Tragteil 1 abgestützt.3, one end of the spring means 11 is supported on a pair of tabs 30, 31, of which the tab 30 is supported on the backrest-side swivel 9 of the two supports 3, 4 and the tab 31 on the support part 1. With the pair of tabs 30, 31, the spring travel of the spring means 11 can be varied. Furthermore, a tension spring 27 is supported on the one hand on the pair of tabs 30, 31 and on the other hand on the support part 1.

Beim Stuhlgestell nach Fig. 4 sind die beiden Träger 3, 4 durch die Lasche 25 rückenlehnenseitig miteinander verbunden und durch die Drehgelenke 5, 8 am Tragteil 1 schwenkbar gelagert. Für die eine Abstützung der Federmittel 11 ist ein Laschenpaar 32, 33 vorgesehen, von dem die Lasche 32 am rückenlehnenseitigen Drehgelenk 9 des Sitzträgers 3 und die Lasche 33 am Drehgelenk 8 des Rückenlehnenträgers 4 im Sitzteil 1 schwenkbar gelagert ist.In the chair frame according to FIG. 4, the two supports 3, 4 are connected to one another on the backrest side by the tab 25 and are pivotably mounted on the supporting part 1 by the swivel joints 5, 8. For the one support of the spring means 11, a pair of tabs 32, 33 is provided, of which the tab 32 is pivotally mounted on the pivot 9 of the seat support 3 on the backrest and the tab 33 on the pivot 8 of the back support 4 in the seat part 1.

Selbstverständlich ist es möglich, auch bei den Stuhlgestellen nach Fig. 3 und 4 und auch in Fig. 1 am knieseitigen Drehgelenk 5 des Sitzträgers 3 eine Torsionsfeder vorzusehen. Bei den Stuhlgestellen nach Fig. 2, 3 und 4 könnte die Torsionsfeder aber auch am Drehgelenk 8 des Rückenlehnenträgers 4 vorgesehen werden.Of course, it is also possible to provide a torsion spring in the chair frames according to FIGS. 3 and 4 and also in FIG. 1 on the knee-side swivel 5 of the seat support 3. 2, 3 and 4, the torsion spring could also be provided on the swivel 8 of the backrest support 4.

Die beschriebenen Stuhlgestelle weisen unter dem Sitzträger ein verhältnismässig geringes Volumen an Gestängeteilen auf. Der bei anderen Konstruktionen unvermeidlich "Entenbauch" wegen der Anordnung voluminöser und sperriger Gestängeteile unter dem Sitzträger kann bei der vorliegenden Konstruktion vermieden werden.The chair frames described have a relatively small volume of rod parts under the seat support. The inevitable "duck belly" in other constructions due to the arrangement of voluminous and bulky rod parts under the seat support can be avoided in the present construction.

Claims (8)

1. Stuhlgestell eines Stuhls mit einem Tragteil (2), an dem mittels Drehgelenken (5, 8) ein rückwärts neigbarer Sitzträger (3) und ein mit dem Sitzträger mittels Kupplungsgelenken (9) gekuppelter Rückenlehnenträger (4) angelenkt sind, wobei dem Drehgelenk (8) des Rückenlehnenträgers (4) ein auskragender Arm (23, 30) zugeordnet ist, an dessen freiem Ende ein Federglied (11) abgestützt ist, dadurch gekennzeichnet, dass der Sitzträger (3) über das Kupplungsgelenk (9, 13) mit einer Lasche (25) verbunden ist, die mit dem andern Kupplungsgelenk (13) an dem Rückenlehnenträger (4) schwenkbar angelenkt ist.1. Chair frame of a chair with a supporting part (2) on which a backrest which can be tilted backwards (3) and a backrest support (4) coupled to the seat support by means of coupling joints (9) are articulated by means of swivel joints (5, 8), the swivel joint ( 8) of the backrest support (4) is assigned a cantilever arm (23, 30), at the free end of which a spring member (11) is supported, characterized in that the seat support (3) via the coupling joint (9, 13) with a tab (25) is connected, which is pivotally articulated with the other coupling joint (13) on the backrest support (4). 2. Stuhlgestell eines Stuhls mit einem Tragteil (2), an dem mittels Drehgelenken (5, 8) ein rückwärts neigbarer Sitzträger (3) und ein mit dem Tragteil mittels Kupplungsgelenken (9) gekuppelter Rückenlehnenträger (4) angelegt sind, wobei an dem Drehgelenk (8) des Rückenlehnenträgers (4) ein auskragender Arm (10) zugeordnet ist, an dessen freiem Ende ein Federglied (11) abgestützt ist, dadurch gekennzeichnet, dass an dem auskragenden Arm (10) der Rückenlehnenträger (4) mit einem kleineren Hebelarm an einem Drehgelenk (6) angelenkt ist als der Hebelarm des am freien Ende des Arms angelenkten Federgliedes (11).2. Chair frame of a chair with a support part (2), on which by means of swivel joints (5, 8) a backward tiltable seat support (3) and a backrest support (4) coupled to the support part by means of coupling joints (9) are applied, with the swivel joint (8) of the backrest support (4) is assigned a cantilever arm (10), at the free end of which a spring member (11) is supported, characterized in that the cantilever arm (10) has the backrest support (4) with a smaller lever arm a swivel joint (6) is articulated as the lever arm of the spring member (11) articulated at the free end of the arm. 3. Stuhlgestell eines Stuhl mit einem Tragteil (2), an dem mittels Drehgelenken (5, 8) ein rückwärts neigbarer Sitzträger (3) und ein mit dem Sitzträger gekuppelter Rückenlehnenträger (4) angelenkt sind, wobei dem Drehgelenk (8) des Rückenlehnenträgers (4) ein auskragender Arm (31,33) zugeordnet ist, an dessen freiem Ende ein Federglied (11) abgestützt ist, dadurch gekennzeichnet, dass das mit dem knieseitigen Drehgelenk (5) am Tragteil (1) abgestützte Federglied (11) am andern Ende an den Enden zweier miteinander verbundener Laschen (30, 31; 32, 33) abgestützt ist, wobei mindestens eine Lasche (30; 32) mit dem Sitzteil (3) oder dem Rückenlehnenteil (4) verbunden ist.3. Chair frame of a chair with a support part (2) to which a backrest which can be tilted backwards (3) and a backrest support (4) coupled to the seat support (4) are articulated by means of swivel joints (5, 8), the swivel joint (8) of the backrest support ( 4) a cantilevered arm (31, 33) is assigned, at the free end of which a spring member (11) is supported, characterized in that that with the the knee-side swivel joint (5) on the support part (1) is supported at the other end at the ends of two interconnected tabs (30, 31; 32, 33), at least one tab (30; 32) with the seat part ( 3) or the backrest part (4) is connected. 4. Stuhlgestell nach Anspruch 3, dadurch gekennzeichnet, dass die eine Lasche (30) an dem rückenlehnenseitigen, dem Sitzteil (3) und dem Rückenlehnenteil (4) gemeinsamen Kupplungsgelenk (9) angelenkt ist, während die andere Lasche (31) am Tragteil (1) schwenkbar gelagert ist.4. Chair frame according to claim 3, characterized in that the one tab (30) is articulated on the backrest-side, the seat part (3) and the backrest part (4) common coupling joint (9), while the other tab (31) on the supporting part ( 1) is pivotally mounted. 5. Stuhlgestell nach Anspruch 4, dadurch gekennzeichnet, dass von den beiden Laschen (32, 33) die eine Lasche (32) am rückenlehnenseitigen Kupplungsgelenk (9) des Sitzträgers (3) und die andere Lasche (33) an dem Drehgelenk (8) des Rückenlehnenträgers (4) am Tragteil (1) drehbar gelagert sind.5. Chair frame according to claim 4, characterized in that of the two tabs (32, 33) one tab (32) on the backrest-side coupling joint (9) of the seat support (3) and the other tab (33) on the swivel joint (8) of the backrest support (4) are rotatably mounted on the support part (1). 7. Stuhlgestell nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die im Tragteil (1) angeordneten Drehgelenke (5, 8) mit einer Torsionsfeder ausgerüstet sind, die im Sinne einer Rückführung des Stuhlgestelles aus der Rückwärtsneigung in die Ausgangslage wirksam ist.7. Chair frame according to one of claims 1 to 5, characterized in that the pivot joints (5, 8) arranged in the supporting part (1) are equipped with a torsion spring which is effective in the sense of returning the chair frame from the backward inclination to the starting position. 8. Stuhlgestell nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass unter dem Sitzteil (3) weitere Federglieder (26, 27) angeordnet sind, von denen das eine Ende am Tragteil (1) und das andere Ende an einem der Träger (3, 4) oder an dem Laschenpaar (30, 31; 32, 33) befestigt ist.8. Chair frame according to one of claims 1 to 7, characterized in that under the seat part (3) further spring members (26, 27) are arranged, of which one end on the support part (1) and the other end on one of the carriers ( 3, 4) or on the pair of tabs (30, 31; 32, 33) is attached. 9. Stuhlgestell nach einem der Ansprüche 1 bis 3, mit einer am Rückenlehnenträger (4) entsprechend der Neigung des Sitzträgers (3) geführte verschiebbare Rückenlehne (21), dadurch gekennzeichnet dass die Rückenlehne über eine Gliederkette mit dem rückenlehnenseitigen Ende des Sitzträgers (3) gekoppelt ist.9. Chair frame according to one of claims 1 to 3, with a on the backrest support (4) according to the inclination of the seat support (3) guided displaceable backrest (21), characterized in that the backrest has a Link chain is coupled to the backrest-side end of the seat support (3).
EP89102231A 1984-10-03 1985-09-09 Chair frame with a reclining seat and a backrest support Expired - Lifetime EP0322400B1 (en)

Priority Applications (1)

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AT8989102231T ATE104835T1 (en) 1984-10-03 1989-02-09 CHAIR FRAME WITH REVERSIBLE SEAT AND BACKREST SUPPORT.

Applications Claiming Priority (3)

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CH4760/84A CH666171A5 (en) 1984-10-03 1984-10-03 CHAIR WITH REAR TILTABLE SEAT AND BACKREST CARRIER.
CH4760/84 1984-10-03
EP85111372A EP0176816B1 (en) 1984-10-03 1985-09-09 Chair with reclining seat and backrest support

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EP0322400A2 true EP0322400A2 (en) 1989-06-28
EP0322400A3 EP0322400A3 (en) 1989-07-19
EP0322400B1 EP0322400B1 (en) 1994-04-27

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EP89102231A Expired - Lifetime EP0322400B1 (en) 1984-10-03 1985-09-09 Chair frame with a reclining seat and a backrest support
EP85111372A Expired EP0176816B1 (en) 1984-10-03 1985-09-09 Chair with reclining seat and backrest support

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EP (2) EP0322400B1 (en)
JP (1) JPS6187505A (en)
AT (2) ATE46608T1 (en)
AU (1) AU577143B2 (en)
BR (1) BR8504774A (en)
CA (1) CA1252036A (en)
CH (1) CH666171A5 (en)
DE (2) DE3587809D1 (en)
DK (1) DK164630C (en)
FI (1) FI81245C (en)
NO (2) NO166213C (en)
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DE2757349A1 (en) * 1977-12-22 1979-07-05 Simon Klinksiek Swivel chair with infinitely adjustable seat and backrest - has gas compression spring and support plate beneath seat body
DE2846360A1 (en) * 1978-10-25 1980-05-08 Drabert Soehne Tilt mechanism for seat and back portion - is for office chair and consists of two gas springs with bell crank
CH645795A5 (en) * 1979-07-23 1984-10-31 Drabert Soehne Chair, in particular visual display unit chair
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US4432582A (en) * 1981-12-17 1984-02-21 Wilkhahn-Wilkening & Hahne Gmbh & Company Chair with means for adjusting the inclination of the backrest
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US2321385A (en) * 1941-06-16 1943-06-08 Sikes Company Tilting chair
US4235408A (en) * 1978-02-27 1980-11-25 Knoll International, Inc. Swivel-chair frame
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WO1983000610A1 (en) * 1981-08-19 1983-03-03 Giroflex Entwicklungs Ag Chair

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007023301A1 (en) * 2005-08-26 2007-03-01 Hilary Rolf Birkbeck Variable configuration seating
US8148748B2 (en) 2007-09-26 2012-04-03 Stmicroelectronics N.V. Adjustable field effect rectifier
US8421118B2 (en) 2007-09-26 2013-04-16 Stmicroelectronics N.V. Regenerative building block and diode bridge rectifier and methods
US8598620B2 (en) 2007-09-26 2013-12-03 Stmicroelectronics N.V. MOSFET with integrated field effect rectifier
US8633521B2 (en) 2007-09-26 2014-01-21 Stmicroelectronics N.V. Self-bootstrapping field effect diode structures and methods
US8643055B2 (en) 2007-09-26 2014-02-04 Stmicroelectronics N.V. Series current limiter device
US9012954B2 (en) 2007-09-26 2015-04-21 STMicroelectronics International B.V. Adjustable field effect rectifier
US9048308B2 (en) 2007-09-26 2015-06-02 Stmicroelectronics International N.V. Regenerative building block and diode bridge rectifier and methods
KR101109456B1 (en) 2009-12-11 2012-02-29 이신근 Chair

Also Published As

Publication number Publication date
ATE104835T1 (en) 1994-05-15
ATE46608T1 (en) 1989-10-15
AU4617885A (en) 1986-04-10
CH666171A5 (en) 1988-07-15
PT81046A (en) 1985-09-01
DK164630B (en) 1992-07-27
ZA857307B (en) 1986-06-25
NO166213B (en) 1991-03-11
PT81046B (en) 1987-08-19
FI81245C (en) 1990-10-10
NO900023D0 (en) 1990-01-04
FI853811L (en) 1986-04-04
EP0176816B1 (en) 1989-09-27
EP0176816A1 (en) 1986-04-09
DE3587809D1 (en) 1994-06-01
JPS6187505A (en) 1986-05-02
NO166213C (en) 1991-06-19
FI81245B (en) 1990-06-29
FI853811A0 (en) 1985-10-02
DK448185A (en) 1986-04-04
AU577143B2 (en) 1988-09-15
EP0322400B1 (en) 1994-04-27
DK448185D0 (en) 1985-10-02
JPH0421482B2 (en) 1992-04-10
DK164630C (en) 1992-12-14
NO900023L (en) 1986-04-04
BR8504774A (en) 1986-07-22
US4684173A (en) 1987-08-04
EP0322400A3 (en) 1989-07-19
DE3573209D1 (en) 1989-11-02
NO853896L (en) 1986-04-04
CA1252036A (en) 1989-04-04

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