EP0176816A1 - Chair with reclining seat and backrest support - Google Patents

Chair with reclining seat and backrest support Download PDF

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Publication number
EP0176816A1
EP0176816A1 EP85111372A EP85111372A EP0176816A1 EP 0176816 A1 EP0176816 A1 EP 0176816A1 EP 85111372 A EP85111372 A EP 85111372A EP 85111372 A EP85111372 A EP 85111372A EP 0176816 A1 EP0176816 A1 EP 0176816A1
Authority
EP
European Patent Office
Prior art keywords
support
backrest
seat
swivel joint
chair
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
EP85111372A
Other languages
German (de)
French (fr)
Other versions
EP0176816B1 (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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Giroflex Entwicklungs AG filed Critical Giroflex Entwicklungs AG
Priority to AT85111372T priority Critical patent/ATE46608T1/en
Priority to EP89102231A priority patent/EP0322400B1/en
Publication of EP0176816A1 publication Critical patent/EP0176816A1/en
Application granted granted Critical
Publication of EP0176816B1 publication Critical patent/EP0176816B1/en
Expired 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 invention relates to a chair with a seat and backrest support which can be tilted backwards, the seat support being arranged on the knee-side seat end with a swivel joint on a support part so as to be pivotable about a horizontal axis and on the backrest-side seat end being pivotably connected to the backrest support by a swivel joint with a horizontal axis.
  • the latter is pivotally pivoted about a horizontal axis at a distance from the swivel joint of the seat support and can be inclined at a greater angle than the inclination angle of the seat support when the seat support is tilted backwards, a backrest guided on the backrest support being lowerable in accordance with the inclination of the seat support, and a chair frame suitable for such a chair.
  • 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, for which purpose one of the swivel joints must additionally be designed as a sliding joint or an additional connecting strap must be arranged on one of the swivel joints.
  • the greater inclination of the backrest support causes the known pull-out effect, ie the clothing of the chair user is pulled upwards when the back is inclined.
  • the reduction or elimination of the pull-out effect represents a noticeable increase in comfort, which is why one does not want to do without the sliding backrest.
  • This object is achieved according to the invention in that the displaceable backrest via a link chain with the back End of the seat part is coupled. It is thereby achieved that the space under the seat of parts remains free for the adjustment of the backrest and the links of the link chain can be made small because of the small distance between the coupling point and the backrest.
  • the invention also includes a chair frame that is particularly, but not exclusively, applicable to the chair according to the invention.
  • This chair frame is characterized in that a cantilever arm is assigned to the backrest support articulated in the swivel joint on the support part, the free end of which serves as a support bearing for a spring member, while the other support bearing is articulated on the swivel joint of the seat support on the support part or in the vicinity of the same in the support part is arranged.
  • 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 7, which in turn is at a distance from the swivel joint by means of a further swivel joint 8.
  • joint of the seat support 3 is pivotally mounted in the support member 1.
  • 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 links 17, 18, 19 which are connected to one another in an articulated manner.
  • 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 the slide 20 from jamming on its guide.
  • 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 4, with which the backrest support 4 can be pivotably mounted on the support part 1 by means of the swivel joint 8 without one Sliding joint would have 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, so that the chair is in a certain position, e.g. to block in the reclined 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 swivel joint 9 of the two supports 3, 4 on the backrest 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 on the backrest-side swivel 9 of the seat support 3 and the tab 33 on the swivel 8 of the backrest support 4 is pivotally mounted in the seat part 1.
  • the described chair and the described chair frames have a relatively small volume of rod parts under the seat support.
  • the "duck belly” that is unavoidable in other constructions due to the arrangement of voluminous and bulky rod parts under the seat support can be avoided in the present construction.

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

Die Erfindung betrifft einen Stuhl mit einem rückwärts neigbaren Sitz- und Rückenlehnenträger, wobei der Sitzträger am knieseitigen Sitzende mit einem Drehgelenk an einem Tragteil um eine horizontale Achse schwenkbar angeordnet und an dem rückenlehnenseitigen Sitzende durch ein Drehgelenk mit horizontaler Achse mit dem Rückenlehnenträger schwenkbar verbunden ist, welch letzterer an dem Tragteil mit Abstand von dem Drehgelenk des Sitzträgers um eine horizontale Achse schwenkbar angelenkt und beim Rückwärtsneigen des Sitzträgers um einen grösseren Winkel als der Neigungswinkel des Sitzträgers neigbar ist, wobei eine an dem Rückenlehnenträger geführte Rückenlehne entsprechend der Neigung des Sitzträgers absenkbar ist, und ein für einen solchen Stuhl geeignetes Stuhlgestell.The invention relates to a chair with a seat and backrest support which can be tilted backwards, the seat support being arranged on the knee-side seat end with a swivel joint on a support part so as to be pivotable about a horizontal axis and on the backrest-side seat end being pivotably connected to the backrest support by a swivel joint with a horizontal axis. which the latter is pivotally pivoted about a horizontal axis at a distance from the swivel joint of the seat support and can be inclined at a greater angle than the inclination angle of the seat support when the seat support is tilted backwards, a backrest guided on the backrest support being lowerable in accordance with the inclination of the seat support, and a chair frame suitable for such a chair.

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 grosseren 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, for which purpose one of the swivel joints must additionally be designed as a sliding joint or an additional connecting strap must be arranged on one of the swivel joints. The greater inclination of the backrest support causes the known pull-out effect, ie the clothing of the chair user is pulled upwards when the back is inclined.

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, 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 on the backrest support a height-adjustable backrest which, when the seat support is tilted backwards and is lowered accordingly when the seat support is tilted backwards that there is no pull-out effect.

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 requires a relatively large amount of space and is not only space-consuming but also costly, since it extends under the seat to the knee-side seat end.

Die Verminderung bzw. Eliminierung des Auszieheffektes stellt eine spürbare Erhöhung des Komfortes dar, weshalb man auf die verschiebbare Rückenlehne nicht verzichten will. Hier setzt nun die Erfindung ein, der die Aufgabe zugrundeliegt, den eingangs beschriebenen Stuhl so weiterzuentwickeln, dass die Verminderung bzw. Eliminierung des Auszieheffektes mit einfachen und weniger Platz beanspruchenden Mitteln erreicht wird. Diese Aufgabe wird gemäss der Erfindung dadurch gelöst, dass die verschiebbare Rückenlehne über eine Gliederkette mit dem rückenseitigen Ende des Sitzteiles gekoppelt ist. Dadurch wird erreicht, dass der Platz unter der Sitzfläche von Teilen für die Verstellung der Rückenlehne freibleibt und die Glieder der Gliederkette wegen des geringen Abstandes zwischen der Koppelstelle und der Rückenlehne klein ausgeführt werden können.The reduction or elimination of the pull-out effect represents a noticeable increase in comfort, which is why one does not want to do without the sliding backrest. This is where the invention comes in, which is based on the task of developing the chair described at the outset in such a way that the reduction or elimination of the pull-out effect is achieved with simple and less space-consuming means. This object is achieved according to the invention in that the displaceable backrest via a link chain with the back End of the seat part is coupled. It is thereby achieved that the space under the seat of parts remains free for the adjustment of the backrest and the links of the link chain can be made small because of the small distance between the coupling point and the backrest.

Die Erfindung umfasst im weitern auch ein Stuhlgestell, das sich besonders, jedoch nicht ausschliesslich für den erfindungsgemässen Stuhl anwendbar ist. Dieses Stuhlgestell kennzeichnet sich dadurch, dass dem in dem tragteilseitigen Drehgelenk angelenkten Rückenlehnenträger ein auskragender Arm zugeordnet ist, dessen freies Ende als das eine Stützlager für ein Federglied dient, während das andere Stützlager an dem tragteilseitigen Drehgelenk des Sitzträgers angelenkt oder in der Nähe desselben im Tragteil angeordnet ist.The invention also includes a chair frame that is particularly, but not exclusively, applicable to the chair according to the invention. This chair frame is characterized in that a cantilever arm is assigned to the backrest support articulated in the swivel joint on the support part, the free end of which serves as a support bearing for a spring member, while the other support bearing is articulated on the swivel joint of the seat support on the support part or in the vicinity of the same in the support part is arranged.

Die Erfindung ist in der Zeichnung in einem Ausführungsbeispiel mit verschiedenen Stuhlgestell-Varianten dargestellt und nachfolgend beschrieben. 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-Anmeldung (BE 20 729), 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. l,
  • Fig. 3 eine zweite Variante des Stuhlgestells des Stuhls nach Fig. 1 und
  • Fig. 4 eine dritte Variante des Stuhlgestells des Stuhls nach Fig. 1.
The invention is shown in the drawing in an embodiment with different chair frame variants and described below. 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 the EP application (BE 20 729), in particular FIGS. 2 to 4. Show it:
  • 1 is a backward-tilting chair (or its kinematic replacement image) with a sliding backrest,
  • Fig. 2 shows a first variant of the chair frame of the chair according to Fig. l,
  • Fig. 3 shows a second variant of the chair frame of the chair according to Fig. 1 and
  • 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 7 angelenkt, der seinerseits mittels eines weiteren Drehgelenkes 8 im Abstand vom Dreh- . gelenk 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 7, which in turn is at a distance from the swivel joint by means of a further swivel joint 8. joint of the seat support 3 is pivotally mounted in the support member 1.

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 zweiarmiger Hebel ausgebildet, an dessen auskragenden Arm 10 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 two-armed lever, on the projecting arm 10 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. Moves the backrest part 4 around a certain loading Trag, 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 links 17, 18, 19 which are connected to one another in an articulated manner. 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 abwärtsbewegt. 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 Klemmen 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 the slide 20 from jamming on its guide.

Beim Stuhl nach Fig. 1 verbindet der eine Arm des Hebels 7 den Rückenlehnenteil 4 mit dem Tragteil 1. Der zwischen des 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 vergössert 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 made possible without jamming and without forming a swivel joint 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 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 is left, i.e. the chair without the link chain 15 and slide 20 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. 1-4 show that there is free space under the seat support 3 if, for moving the backrest 21, no linkage has to be guided into the area of the support part 1, but uses the link chain 15 lying outside the seat support 3 can be.

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 4 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.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 4, with which the backrest support 4 can be pivotably mounted on the support part 1 by means of the swivel joint 8 without one Sliding joint would have 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, um 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, so that the chair is in a certain position, e.g. to block in the reclined 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.In the chair frame according to FIG. 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 swivel joint 9 of the two supports 3, 4 on the backrest 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 one support of the spring means 11, a pair of tabs 32, 33 is provided, of which the tab 32 on the backrest-side swivel 9 of the seat support 3 and the tab 33 on the swivel 8 of the backrest support 4 is pivotally mounted 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.

Der beschriebene Stuhl und die beschriebenen Stuhlgestelle weisen unter dem Sitzträger ein verhältnismässig geringes Volumen an Gestängeteilen auf. Der bei anderen Konstruktionen unvermeidliche "Entenbauch" wegen der Anordnung voluminöser und sperriger Gestängeteile unter dem Sitzträger kann bei der vorliegenden Konstruktion vermieden werden.The described chair and the described chair frames have a relatively small volume of rod parts under the seat support. The "duck belly" that is unavoidable 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 (11)

1. Stuhl mit einem rückwärts neigbaren Sitzträger (3) und einem Rückenlehnenträger (4), wobei der Sitzträger an dem knieseitigen Sitzende mit einem Drehgelenk (5) an einem Tragteil (1) um eine horizontale Achse schwenkbar angeordnet und an dem rückenlehnenseiti gen Sitzende durch ein Drehgelenk (9) mit horizontaler Schwenkachse mit dem Rückenlehnenträger schwenkbar verbunden ist, welch letzterer am Tragteil mit Abstand von dem knieseitigen Drehgelenk des Sitzträgers um eine horizontale Achse schwenkbar angelenkt und beim Rückwärtsneigen des Sitzträgers um einen grösseren Winkel als der Neigungswinkel des Sitzträgers neigbar ist, wobei eine am Rückenlehnenträger geführte Rückenlehne (21) entsprechend der Neigung des Sitzträgers absenkbar ist, dadurch gekennzeichnet, dass die verschiebbare Rückenlehne (21) über eine Gliederkette (15) mit dem rückenlehnenseitigen Ende des Sitzträgers (3) gekoppelt ist.1. Chair with a backward-tilting seat support (3) and a backrest support (4), the seat support on the knee-side seat end with a swivel joint (5) on a support member (1) being pivoted about a horizontal axis and on the backrest-side seated position a swivel joint (9) with a horizontal swivel axis is pivotally connected to the backrest support, the latter being pivotally pivoted on the support part at a distance from the knee-side swivel joint of the seat support and pivotable by a larger angle than the inclination angle of the seat support when the seat support is tilted backwards, wherein a backrest (21) guided on the backrest support can be lowered in accordance with the inclination of the seat support, characterized in that the displaceable backrest (21) is coupled to the end of the seat support (3) on the backrest side via a link chain (15). 2. Stuhl nach Anspruch 1, dadurch gekennzeichnet, dass an dem Rückenlehnenträger (4) zwischen der Rückenlehne (21) und dem rückenlehnenseitigen Ende des Sitzträgers (3) ein Drehgelenk (22) angeordnet ist, an dem ein Glied (18) der Gliederkette (15) drehbar gelagert ist.2. Chair according to claim 1, characterized in that on the backrest support (4) between the backrest (21) and the backrest-side end of the seat support (3) a swivel joint (22) is arranged on which a link (18) of the link chain ( 15) is rotatably mounted. 3. Stuhl nach Anspruch 2, dadurch gekennzeichnet, dass die Gliederkette (15) aus drei Gliedern (17, 18, 19) besteht, von denen das mittlere Glied (18) als ein zweiarmiges Hebelglied ausgebildet ist, das mit seiner Schwenkachse in dem Drehgelenk (22) des Rückenlehnenträgers (4) schwenkbar gelagert ist.3. Chair according to claim 2, characterized in that the link chain (15) consists of three links (17, 18, 19), of which the middle link (18) is designed as a two-armed lever member which with its pivot axis in the swivel joint (22) of the backrest support (4) is pivotally mounted. 4. Stuhlgestell für einen Stuhl, insbesondere nach einem der Ansprüche 1-3, dadurch gekennzeichnet, dass dem in dem tragteilseitigen Drehgelenk (8) angelenkten Rückenlehnenträger (4) ein auskragender Arm (10, 23, 31, 33) zugeordnet ist, dessen freies Ende als das eine Stützlager für ein Federglied (11) dient, während das andere Stützlager an dem knieseitigen Drehgelenk (5) des Sitzträgers (3) angelenkt oder in der Nähe desselben im Tragteil (1) angeordnet ist.4. Chair frame for a chair, in particular according to one of claims 1-3, characterized in that the cantilever arm (10, 23, 31, 33) is associated with the backrest support (4) articulated in the support part-side swivel joint (8), the free arm End serves as a support bearing for a spring member (11), while the other support bearing is articulated on the knee-side swivel joint (5) of the seat support (3) or is arranged in the vicinity of the same in the support part (1). 5. Stuhlgestell nach Anspruch 4, dadurch gekennzeichnet, dass der Sitzträger (3) über das rückenlehnenseitige Drehgelenk (9) mit einer Lasche (25) verbunden ist, die mit einem untern Drehgelenk (13) an dem Rückenlehnenträger (4) schwenkbar angelenkt ist.5. Chair frame according to claim 4, characterized in that the seat support (3) via the backrest-side swivel joint (9) is connected to a tab (25) which is pivotably articulated with a lower swivel joint (13) on the backrest support (4). 6. Stuhlgestell nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass der auskragende Arm (10) Teil eines zweiarmigen Hebels (7)bildet, an dem der Rückenlehnenträger (4) mit einem Drehgelenk (6) angelenkt ist und der mit Drehgelenk (8) im Tragteil (1) schwenkbar gelagert ist.6. Chair frame according to claim 4 or 5, characterized in that the projecting arm (10) forms part of a two-armed lever (7) on which the backrest support (4) is articulated with a swivel joint (6) and which with swivel joint (8) is pivotally mounted in the supporting part (1). 7. Stuhlgestell nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass das am knieseitigen Drehgelenk (5) oder am Tragteil (1) abgestützte Federglied (11) am andern Ende an den Enden zweier miteinander verbundener Laschen (30, 31; 32, 34) abgestützt ist, wobei mindestens eine Lasche (30; 32, 33) mit dem Sitzteil (3) oder dem Rückenlehnenteil (4) verbunden ist.7. Chair frame according to claim 4 or 5, characterized in that the spring member (11) supported on the knee-side swivel joint (5) or on the supporting part (1) at the other end at the ends of two interconnected tabs (30, 31; 32, 34) is supported, at least one tab (30; 32, 33) being connected to the seat part (3) or the backrest part (4). 8. Stuhlgestell nach Anspruch 7, dadurch gekennzeichnet, dass die eine Lasche (30) an dem rückenlehnenseitigen, dem Sitzteil (3) und dem Rückenlehnenteil (4) gemeinsamen Drehgelenk (9) angelenkt ist, während die andere Lasche (31) am Tragteil (1) schwenkbar gelagert ist.8. Chair frame according to claim 7, characterized in that the one tab (30) on the backrest-side, the seat part (3) and the backrest part (4) in common seed swivel (9) is articulated, while the other bracket (31) on the support member (1) is pivotally mounted. 9. Stuhlgestell nach Anspruch 7, dadurch gekennzeichnet, dass von den beiden Laschen (32, 33) die eine Lasche (32) am rücklehnenseitigen Drehgelenk (9) des Sitzträgers (3) und die andere Lasche (33) an dem Drehgelenk (8) des Rückenlehnenträgers (4) im Tragteil (1) drehbar gelagert sind.9. Chair frame according to claim 7, characterized in that of the two tabs (32, 33), one tab (32) on the backrest-side pivot joint (9) of the seat support (3) and the other tab (33) on the pivot joint (8) of the backrest support (4) are rotatably mounted in the supporting part (1). 10. Stuhlgestell nach einem der Ansprüche 4 bis 9, 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.10. Chair frame according to one of claims 4 to 9, 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. 11. Stuhlgestell nach einem der Ansprüche 1 bis 10, 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.11. Chair frame according to one of claims 1 to 10, characterized in that further spring members (26, 27) are arranged under the seat part (3), 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.
EP85111372A 1984-10-03 1985-09-09 Chair with reclining seat and backrest support Expired EP0176816B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT85111372T ATE46608T1 (en) 1984-10-03 1985-09-09 CHAIR WITH RECLINING SEAT AND BACK SUPPORT.
EP89102231A EP0322400B1 (en) 1984-10-03 1985-09-09 Chair frame with a reclining seat and a backrest support

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4760/84A CH666171A5 (en) 1984-10-03 1984-10-03 CHAIR WITH REAR TILTABLE SEAT AND BACKREST CARRIER.
CH4760/84 1984-10-03

Related Child Applications (1)

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EP89102231.1 Division-Into 1989-02-09

Publications (2)

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EP0176816A1 true EP0176816A1 (en) 1986-04-09
EP0176816B1 EP0176816B1 (en) 1989-09-27

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

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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

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US (1) US4684173A (en)
EP (2) EP0176816B1 (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)
PT (1) PT81046B (en)
ZA (1) ZA857307B (en)

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KR101109456B1 (en) 2009-12-11 2012-02-29 이신근 Chair
CN102843930B (en) * 2010-04-15 2016-02-10 喜迪世公司 For the restoring force of regulating action on back governor motion and there is the office chair of this governor motion
US9801471B2 (en) 2014-04-17 2017-10-31 Hni Technologies Inc. Chair and chair control assemblies, systems, and methods
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DE202017102909U1 (en) * 2017-01-04 2018-04-05 Design Ballendat Gmbh Chair with one-piece seat shell
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Cited By (26)

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EP0237825A3 (en) * 1986-03-15 1988-01-07 Drabert Söhne GmbH &amp; Co. Sitting-furniture
EP0237825A2 (en) * 1986-03-15 1987-09-23 Drabert Söhne GmbH &amp; Co. Sitting-furniture
US5725277A (en) * 1986-04-10 1998-03-10 Steelcase Inc. Synchrotilt chair
US4776633A (en) * 1986-04-10 1988-10-11 Steelcase Inc. Integrated chair and control
EP0281845A1 (en) * 1987-02-25 1988-09-14 Köhl Gmbh Swivel chair or seat with synchronized inclination of backrest and seat
WO1989006099A1 (en) * 1987-12-29 1989-07-13 Roeder Gmbh Chair, in particular work or office chair
DE3744363A1 (en) * 1987-12-29 1989-07-13 Roeder Gmbh CHAIR, ESPECIALLY WORK OR OFFICE CHAIR
DE3744365A1 (en) * 1987-12-29 1989-07-13 Roeder Gmbh CHAIR, ESPECIALLY WORK OR OFFICE CHAIR
US5193880A (en) * 1987-12-29 1993-03-16 Roeder Gmbh Chair, in particular work or office chair
WO1989006100A1 (en) * 1987-12-29 1989-07-13 Roeder Gmbh Chair, in particular work or office chair
FR2627968A1 (en) * 1988-03-07 1989-09-08 Eurosit Office chair with back moved backwards and forwards - with back joined to support articulated on seat support and cable connecting back and seat support
US5575095A (en) * 1988-11-18 1996-11-19 Roeder Gmbh Chair
DE3914832A1 (en) * 1989-05-05 1990-11-08 Link Wilhelm Kg Adjustable chair with synchronised mechanism - has backrest height adjustment knob underneath seat allowing adjustment while person is seated
EP0399251B1 (en) * 1989-05-20 1995-03-15 Roeder Gmbh Chair, particularly work- or office-chair
US5308144A (en) * 1989-05-20 1994-05-03 Roeder Gmbh Chair, in particular work or office chair
GB2246287B (en) * 1990-06-12 1993-10-20 Unit Press Limited Back support pillar for a chair
US5286088A (en) * 1990-06-12 1994-02-15 Unit Press Limited Underseat mechanism for a chair
GB2246287A (en) * 1990-06-12 1992-01-29 Unit Press Limited Underseat mechanism for chairs
US5909924A (en) * 1997-04-30 1999-06-08 Haworth, Inc. Tilt control for chair
US6015187A (en) * 1997-04-30 2000-01-18 Haworth, Inc. Tilt control for chair
EP2897493A4 (en) * 2012-09-20 2016-06-15 Steelcase Inc Chair assembly
EP2897490A4 (en) * 2012-09-20 2016-06-29 Steelcase Inc Control assembly for chair
AU2013318080B2 (en) * 2012-09-20 2017-06-01 Steelcase Inc. Chair assembly
AU2013318051B2 (en) * 2012-09-20 2018-09-13 Steelcase Inc. Control assembly for chair
US10165861B2 (en) 2012-09-20 2019-01-01 Steelcase Inc. Chair assembly with upholstery covering
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering

Also Published As

Publication number Publication date
FI853811A0 (en) 1985-10-02
FI853811L (en) 1986-04-04
BR8504774A (en) 1986-07-22
PT81046B (en) 1987-08-19
NO900023L (en) 1986-04-04
JPS6187505A (en) 1986-05-02
DK448185D0 (en) 1985-10-02
DE3587809D1 (en) 1994-06-01
NO900023D0 (en) 1990-01-04
DK164630B (en) 1992-07-27
ZA857307B (en) 1986-06-25
EP0322400B1 (en) 1994-04-27
EP0322400A2 (en) 1989-06-28
CH666171A5 (en) 1988-07-15
NO166213C (en) 1991-06-19
FI81245B (en) 1990-06-29
PT81046A (en) 1985-09-01
EP0322400A3 (en) 1989-07-19
JPH0421482B2 (en) 1992-04-10
ATE104835T1 (en) 1994-05-15
FI81245C (en) 1990-10-10
DE3573209D1 (en) 1989-11-02
AU577143B2 (en) 1988-09-15
AU4617885A (en) 1986-04-10
ATE46608T1 (en) 1989-10-15
US4684173A (en) 1987-08-04
NO853896L (en) 1986-04-04
DK448185A (en) 1986-04-04
EP0176816B1 (en) 1989-09-27
NO166213B (en) 1991-03-11
DK164630C (en) 1992-12-14
CA1252036A (en) 1989-04-04

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