EP0322400B1 - 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
EP0322400B1
EP0322400B1 EP89102231A EP89102231A EP0322400B1 EP 0322400 B1 EP0322400 B1 EP 0322400B1 EP 89102231 A EP89102231 A EP 89102231A EP 89102231 A EP89102231 A EP 89102231A EP 0322400 B1 EP0322400 B1 EP 0322400B1
Authority
EP
European Patent Office
Prior art keywords
backrest
joint
supporting arm
support
knee
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.)
Expired - Lifetime
Application number
EP89102231A
Other languages
German (de)
French (fr)
Other versions
EP0322400A3 (en
EP0322400A2 (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 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
Anticipated expiration legal-status Critical
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 invention relates to a chair frame with a support part designed as a base frame, a cantilevered support arm and a seat support articulated at the knee-side end with the support arm and at the back-side end with a backrest support, the backrest support operatively connected to a spring element supported on the support arm on the knee side is articulated to the end facing the support arm and can be tilted backwards together with the seat support.
  • a chair frame for a chair which essentially comprises a base frame designed as a supporting part, a supporting arm arranged on the supporting part projecting and a seat support and backrest support, the seat support in the knee-side area via a first tab on the support arm and is supported in the area on the backrest side by means of a second bracket on the backrest support and is articulated in such a way that the seat and the backrest support can be tilted backwards against the restoring force of a spring element arranged on the support arm and backrest support.
  • the invention is based on the object of designing and improving a chair frame of the type mentioned at the outset in such a way that optimum seating comfort is achieved with the simplest possible constructional means while maintaining a small space requirement for the adjustment mechanism.
  • the invention also includes chair frames according to independent claims 2, 3 and 4, further features of the invention being apparent from the following description in conjunction with the drawing.
  • the chair frame shown in Figure 1 for a chair is supported on a support arm 1 of a support member 2, wherein the support member 2 is usually part of a mostly mobile, not shown foot frame.
  • a seat support 3 and a backrest support 4 are mounted on the support arm 1.
  • the seat support 3 is pivotally mounted on a joint 5 provided on the knee-side end of the support arm 1 and the backrest support 4 at a distance from it on a bracket 10 articulated with a joint 8 on the support arm 1.
  • the bracket 10 mounted on the support arm 1 with the first joint 8 has a second joint 8 ′ arranged at a distance from the first joint 8 and a third joint 6 arranged in between, on which the backrest support 4 is mounted.
  • the tab 10 is essentially divided by the third joint 6 into a first lever 7 and a second lever 7 '.
  • One end of a spring member 11 is supported on the second joint 8 'of the second lever 7', while the other end of the spring member 11 is articulated on the knee joint 5 of the seat support 3 or is supported on the support arm 1 in the vicinity of the joint 5.
  • the seat support 3 and the backrest support 4 are further articulated to one another with a joint 9 on the backrest side connected.
  • the backrest support 4 protrudes with an extension 12 Ver over the backrest-side joint 9 also.
  • a link chain 15 is coupled with a joint 16.
  • the link chain 15 has three links 17, 18 and 19 which are connected to one another in an articulated manner, one link 19 being connected at its free end to a slide 20.
  • the slider 20 is guided on the backrest support 4 and carries a backrest 21, shown schematically by the broken line.
  • the seat support 3 moves around the knee joint 5 in the direction of arrow a (FIG. 1) and the backrest support 4 around the backrest joint 9 in the direction of arrow A (FIG. 1), the inclination of the backrest support 4 being greater than that of the seat support 3.
  • the relative movement between the two supports 3 and 4 adjusts the link chain 15 in such a way that the slider 20 moves downward with the backrest 21.
  • the link 18 thus forms a two-armed lever, by means of which the inclination of the link 18 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.
  • the tab 10 divided into two levers 7 and 7 'connects the backrest support 4 to the support arm 1.
  • the lever 7' formed between the first joint 8 and the third joint 6 ensures the parts 3 and 4 a jam-free sequence of movements.
  • the effect of the spring member 11 is also increased by the tab 10, which translates the movement of the backrest support. From Fig.1 is the space-saving and simple solution of the displacement of the slider 20 with the backrest 21 can be seen.
  • the space below the seat support 3 can be used for the arrangement of other functional parts.
  • FIGS. 2 to 4 each show the chair frame without the link chain 15 and the slider 20. However, the arrangement of these parts is also easily possible with these variants. Furthermore, additional spring elements or linkages are provided in these exemplary embodiments, which will be described in detail below.
  • the seat support 3 mounted on the knee joint 5 is connected to the backrest support 4 by means of a tab 25 on the backrest side.
  • the tab 25 is mounted with the joint 9 on the seat support 3 and with a joint 13 on the backrest support 4.
  • the backrest support 4 is supported with the knee-side end on the joint 8 and is provided with a molded part 23 directed upwards from the joint 8, on the free end of which the spring member 11 is supported.
  • a tension spring 26 can be seen, which is attached at one end to the backrest support 4 and at the other end to the support arm 1. If further spring elements are required, it is possible to arrange them on the knee joint 5 of the seat support 3 and on the joint 8 of the support arm 1.
  • the spring elements always have the task of moving the chair frame into its normal or working position when it is relieved. It is desirable to be able to actuate the spring member 11 arranged in the knee area, which is, for example, a gas pressure spring, in order to be able to do so To block the chair frame in a certain position, for example in the backward inclined position.
  • the actuation can be made easily accessible due to the arrangement of the spring member 11.
  • one end of the spring member 11 is supported on a first pair of tabs 30 and 31, of which one tab 30 on the backrest-side joint 9 of the two supports 3 and 4 and the other plate 31 on a joint 8 '' are supported.
  • the joint 8 ′′ is arranged at a distance from the joint 8 on the support arm 1.
  • the spring travel of the spring member 11 can be varied with the pair of tabs 30, 31.
  • a tension spring 27 is also provided, which is fastened to the second joint 8 ′ and to the support arm 1.
  • the two parts 3 and 4 are connected to one another on the backrest side via the tab 25 arranged on the joints 9 and 13 and are pivotably mounted on the support arm 1 by the joints 5 and 8.
  • a second pair of plates 32, 33 is provided, of which one plate 32 is mounted on the joint 9 of the seat support 3 on the backrest and the other plate 33 on the first joint 8 of the support arm 1.

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)
  • Special Chairs (AREA)
  • Seats For Vehicles (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Pyridine Compounds (AREA)
  • Steroid Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (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

Die Erfindung bezieht auf ein Stuhlgestell mit einem als Fussgestell ausgebildeten Tragteil, einem auskragend daran angeordneten Tragarm sowie einem am knieseitigen Ende mit dem Tragarm und an dem rückenlehnenseitigen Ende mit einem Rückenlehnenträger gelenkig gekuppelten Sitzträger, wobei der mit einem knieseitig an dem Tragarm abgestützten Federelement wirkverbundene Rückenlehnenträger mit dem dem Tragarm zugewandten Ende gelenkig verbunden und zusammen mit dem Sitzträger rückwärts neigbar ist.The invention relates to a chair frame with a support part designed as a base frame, a cantilevered support arm and a seat support articulated at the knee-side end with the support arm and at the back-side end with a backrest support, the backrest support operatively connected to a spring element supported on the support arm on the knee side is articulated to the end facing the support arm and can be tilted backwards together with the seat support.

Aus der US-A 2 321 385 ist ein Stuhlgestell für einen Stuhl bekannt, welches im wesentlichen ein als Tragteil ausgebildetes Fussgestell, einen am Tragteil auskragend angeordneten Tragarm sowie einen Sitzträger und Rückenlehnenträger umfasst, wobei der Sitzträger im knieseitigen Bereich über eine erste Lasche am Tragarm und im rückenlehnenseitigen Bereich über eine zweite Lasche am Rückenlehnenträger abgestützt und derart angelenkt ist, dass der Sitz- sowie der Rückenlehnenträger gegen die Rückstellkraft eines am Tragarm und Rückenlehnenträger angeordneten Federglieds rückwärts neigbar ist.From US-A 2 321 385 a chair frame for a chair is known which essentially comprises a base frame designed as a supporting part, a supporting arm arranged on the supporting part projecting and a seat support and backrest support, the seat support in the knee-side area via a first tab on the support arm and is supported in the area on the backrest side by means of a second bracket on the backrest support and is articulated in such a way that the seat and the backrest support can be tilted backwards against the restoring force of a spring element arranged on the support arm and backrest support.

Um den sogenannten Auszieheffekt zu vermeiden, ist es aus der PCT-Anmeldung (WO 83/00610) bekannt, an dem Rückenlehnenträger eine in der Höhe verschiebbare Rückenlehne anzuordnen, welche bei der rückwärts orientierten Bewegung des Sitz- und Rückenlehnenträgers entsprechend abwärts bewegt wird. Die Verschiebung der Rückenlehne wird durch ein zusätzliches Gestänge erreicht und erfolgt dabei in Abhängigkeit von der Rückwärtsbewegung.In order to avoid the so-called pull-out effect, it is known from the PCT application (WO 83/00610) on the backrest support to arrange a height-adjustable backrest, which is moved correspondingly downward during the backward movement of the seat and backrest support. The backrest is moved by an additional linkage and is dependent on the backward movement.

Der Erfindung liegt die Aufgabe zugrunde, ein Stuhlgestell der eingangs genannten Art so auszubilden und dahingehend zu verbessern, dass mit möglichst einfachen konstruktiven Mitteln, unter Beibehaltung eines geringen Raumbedarfs für die Verstellmechanik, ein optimaler Sitzkomfort erreicht wird.The invention is based on the object of designing and improving a chair frame of the type mentioned at the outset in such a way that optimum seating comfort is achieved with the simplest possible constructional means while maintaining a small space requirement for the adjustment mechanism.

Diese Aufgabe wird gemäss der Erfindung durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.This object is achieved according to the invention by the characterizing features of claim 1.

Die Erfindung umfasst im weiteren auch Stuhlgestelle nach den unabhängigen Ansprüchen 2, 3 und 4, wobei sich weitere Merkmale der Erfindung aus der folgenden Beschreibung in Verbindung mit der Zeichnung ergeben.The invention also includes chair frames according to independent claims 2, 3 and 4, further features of the invention being apparent from the following description in conjunction with the drawing.

Die Erfindung wird nachstehend unter Bezugnahme auf die Zeichnung beschrieben. Es zeigt:

Fig.1
ein schematisch dargestelltes Stuhlgestell mit rück wärts neigbarem Sitz- und Rückenlehnenträger,
Fig.2
eine erste Variante des Stuhlgestells gemäss Fig.1,
Fig.3
eine zweite Variante des Stuhlgestells gemäss Fig.1, und
Fig.4
eine dritte Variante des Stuhlgestells gemäss Fig.1.
The invention is described below with reference to the drawing. It shows:
Fig. 1
a schematically represented chair frame with seat and backrest support which can be tilted backwards,
Fig. 2
a first variant of the chair frame according to Fig.1,
Fig. 3
a second variant of the chair frame according to Fig.1, and
Fig. 4
a third variant of the chair frame according to Fig.1.

Das in Fig.1 dargestellte Stuhlgestell für einen Stuhl ist auf einem Tragarm 1 eines Tragteils 2 abgestützt, wobei das Tragteil 2 gewöhnlich ein Teil eines meist fahrbaren, nicht näher dargestellten Fussgestells ist.The chair frame shown in Figure 1 for a chair is supported on a support arm 1 of a support member 2, wherein the support member 2 is usually part of a mostly mobile, not shown foot frame.

An dem Tragarm 1 sind ein Sitzträger 3 und ein Rückenlehnenträger 4 gelagert. Dabei ist der Sitzträger 3 an einem am knieseitigen Ende des Tragarms 1 vorgesehenen Gelenk 5 und der Rückenlehnenträger 4 im Abstand dazu an einer mit einem Gelenk 8 am Tragarm 1 angelenkten Lasche 10 schwenkbar gelagert. Die mit dem ersten Gelenk 8 am Tragarm 1 gelagerte Lasche 10 hat ein im Abstand zum ersten Gelenk 8 angeordnetes zweites Gelenk 8' sowie ein dazwischen angeordnetes drittes Gelenk 6, an welchem der Rückenlehnenträger 4 gelagert ist. Die Lasche 10 ist im wesentlichen durch das dritte Gelenk 6 in einen ersten Hebel 7 und einen zweiten Hebel 7' unterteilt. An dem zweiten Gelenk 8' des zweiten Hebels 7' ist das eine Ende eines Federgliedes 11 abgestützt, während das andere Ende des Federglieds 11 an dem knieseitigen Gelenk 5 des Sitzträgers 3 angelenkt oder aber in der Nähe des Gelenks 5 am Tragarm 1 abgestützt ist.On the support arm 1, a seat support 3 and a backrest support 4 are mounted. The seat support 3 is pivotally mounted on a joint 5 provided on the knee-side end of the support arm 1 and the backrest support 4 at a distance from it on a bracket 10 articulated with a joint 8 on the support arm 1. The bracket 10 mounted on the support arm 1 with the first joint 8 has a second joint 8 ′ arranged at a distance from the first joint 8 and a third joint 6 arranged in between, on which the backrest support 4 is mounted. The tab 10 is essentially divided by the third joint 6 into a first lever 7 and a second lever 7 '. One end of a spring member 11 is supported on the second joint 8 'of the second lever 7', while the other end of the spring member 11 is articulated on the knee joint 5 of the seat support 3 or is supported on the support arm 1 in the vicinity of the joint 5.

An dieser Stelle wird darauf hingewiesen, dass die vorstehend und auch nachstehend beschriebenen Gelenke als Gelenkstellen mit horizontaler Drehachse ausgebildet sind, was in der folgenden Beschreibung nicht mehr besonders erwähnt wird.At this point, it is pointed out that the joints described above and below are designed as joint points with a horizontal axis of rotation, which is no longer mentioned in the following description.

Der Sitzträger 3 und der Rückenlehnenträger 4 sind weiterhin rückenlehnenseitig mit einem Gelenk 9 gelenkig miteinander verbunden. Der Rückenlehnenträger 4 ragt dabei mit einer Ver längerung 12 über das rückenlehnenseitige Gelenk 9 hinaus. Am freien Ende der Verlängerung 12 ist mit einem Gelenk 16 eine Gliederkette 15 angekuppelt. Die Gliederkette 15 hat drei gelenkig miteinander verbundene Glieder 17,18 und 19, wobei das eine Glied 19 an seinem freien Ende mit einem Schieber 20 verbunden ist. Der Schieber 20 ist am Rückenlehnenträger 4 geführt und trägt eine durch die gestrichelte Linie schematisch dargestellte Rückenlehne 21.The seat support 3 and the backrest support 4 are further articulated to one another with a joint 9 on the backrest side connected. The backrest support 4 protrudes with an extension 12 Ver over the backrest-side joint 9 also. At the free end of the extension 12, a link chain 15 is coupled with a joint 16. The link chain 15 has three links 17, 18 and 19 which are connected to one another in an articulated manner, one link 19 being connected at its free end to a slide 20. The slider 20 is guided on the backrest support 4 and carries a backrest 21, shown schematically by the broken line.

Beim Zurückneigen des Stuhls bewegt sich der Sitzträger 3 um das knieseitige Gelenk 5 in Pfeilrichtung a (Fig.1) und der Rückenlehnenträger 4 um das rückenlehnenseitige Gelenk 9 in Pfeilrichtung A (Fig.1), wobei die Neigung des Rückenlehnenträgers 4 grösser ist als die des Sitzträgers 3. Durch die Relativbewegung zwischen den beiden Trägern 3 und 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 einem Gelenk 22 am Rückenlehnenträger 4 schwenkbar gelagert ist. Das Glied 18 bildet somit einen zweiarmigen Hebel, durch den die Neigung des Gliedes 18 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 joint 5 in the direction of arrow a (FIG. 1) and the backrest support 4 around the backrest joint 9 in the direction of arrow A (FIG. 1), the inclination of the backrest support 4 being greater than that of the seat support 3. The relative movement between the two supports 3 and 4 adjusts the link chain 15 in such a way that the slider 20 moves downward with the backrest 21. This is achieved in that the middle link 18 is pivotally mounted on the backrest support 4 by means of a joint 22. The link 18 thus forms a two-armed lever, by means of which the inclination of the link 18 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.

Bei dem Stuhlgestell gemäss Fig.1 verbindet die in zwei Hebel 7 und 7' unterteilte Lasche 10 den Rückenlehnenträger 4 mit dem Tragarm 1. Der zwischen dem ersten Gelenk 8 und dem dritten Gelenk 6 gebildete Hebel 7' gewährleistet bei der Rückwärtsneigung der Teile 3 und 4 einen klemmfreien Bewegungsablauf. Durch die Lasche 10, welche die Bewegung des Rückenlehnenträgers übersetzt, wird zudem die Wirkung des Federgliedes 11 vergrössert. Aus Fig.1 ist weiterhin die raumsparende und einfache Lösung der Verschiebung des Schiebers 20 mit der Rückenlehne 21 erkennbar. Der Raum unterhalb des Sitzträgers 3 kann für die Anordnung anderer Funktionsteile verwendet werden.In the chair frame according to FIG. 1, the tab 10 divided into two levers 7 and 7 'connects the backrest support 4 to the support arm 1. The lever 7' formed between the first joint 8 and the third joint 6 ensures the parts 3 and 4 a jam-free sequence of movements. The effect of the spring member 11 is also increased by the tab 10, which translates the movement of the backrest support. From Fig.1 is the space-saving and simple solution of the displacement of the slider 20 with the backrest 21 can be seen. The space below the seat support 3 can be used for the arrangement of other functional parts.

In den Figuren 2 bis 4 ist jeweils das Stuhlgestell ohne die Gliederkette 15 und den Schieber 20 dargestellt. Die Anordnung dieser Teile ist jedoch auch bei diesen Varianten ohne weiteres möglich. Weiterhin sind bei diesen Ausführungsbeispielen zusätzliche Federelemente oder Gestänge vorgesehen, welche nachstehend noch im einzelnen beschrieben werden.FIGS. 2 to 4 each show the chair frame without the link chain 15 and the slider 20. However, the arrangement of these parts is also easily possible with these variants. Furthermore, additional spring elements or linkages are provided in these exemplary embodiments, which will be described in detail below.

Bei dem Stuhlgestell gemäss Fig.2 sind gleiche Teile, wie in Fig.1, mit gleichen Bezugszeichen versehen. Der am knieseitigen Gelenk 5 gelagerte Sitzträger 3 ist hierbei rückenlehnenseitig mittels einer Lasche 25 mit dem Rückenlehnenträger 4 verbunden. Die Lasche 25 ist dabei mit dem Gelenk 9 am Sitzträger 3 und mit einem Gelenk 13 am Rückenlehnenträger 4 gelagert. Der Rückenlehnenträger 4 ist mit dem knieseitigen Ende am Gelenk 8 gelagert und ist mit einem vom Gelenk 8 obwärts gerichteten, angeformten Teilstück 23 versehen, an dessen freiem Ende das Federglied 11 abgestützt ist. Weiterhin erkennt man eine Zugfeder 26, welche mit dem einen Ende am Rückenlehnenträger 4 und mit dem anderen Ende am Tragarm 1 befestigt ist. Sofern weitere Federelemente erforderlich sind, besteht die Möglichkeit, die am knieseitigen Gelenk 5 des Sitzträgers 3 sowie am Gelenk 8 des Tragarms 1 anzuordnen.In the chair frame according to FIG. 2, the same parts as in FIG. 1 are provided with the same reference symbols. The seat support 3 mounted on the knee joint 5 is connected to the backrest support 4 by means of a tab 25 on the backrest side. The tab 25 is mounted with the joint 9 on the seat support 3 and with a joint 13 on the backrest support 4. The backrest support 4 is supported with the knee-side end on the joint 8 and is provided with a molded part 23 directed upwards from the joint 8, on the free end of which the spring member 11 is supported. Furthermore, a tension spring 26 can be seen, which is attached at one end to the backrest support 4 and at the other end to the support arm 1. If further spring elements are required, it is possible to arrange them on the knee joint 5 of the seat support 3 and on the joint 8 of the support arm 1.

Bei den dargestellten Ausführungsbeispielen des Stuhls bzw. des Stuhlgestells haben die Federelemente stets die Aufgabe, das Stuhlgestell bei seiner Entlastung in die Normal- oder Arbeitsstellung zu bewegen. Dabei ist es erwünscht, das im Kniebereich angeordnete Federglied 11, welches beispielsweise eine Gasdruckfeder ist, betätigen zu können, um damit das Stuhlgestell in einer bestimmten Lage, z.B. in der rückwärtsgeneigten Lage zu blockieren. Hierbei kann die Betätigung aufgrund der Anordnung des Federgliedes 11 leicht zugänglich gestaltet werden.In the illustrated embodiments of the chair or the chair frame, the spring elements always have the task of moving the chair frame into its normal or working position when it is relieved. It is desirable to be able to actuate the spring member 11 arranged in the knee area, which is, for example, a gas pressure spring, in order to be able to do so To block the chair frame in a certain position, for example in the backward inclined position. Here, the actuation can be made easily accessible due to the arrangement of the spring member 11.

Bei dem Stuhlgestell gemäss Fig.3 ist das eine Ende des Federgliedes 11 an einem ersten Laschenpaar 30 und 31 abgestützt, von dem die eine Lasche 30 am rückenlehnenseitigen Gelenk 9 der beiden Träger 3 und 4 und die andere Lasche 31 an einem Gelenk 8'' abgestützt sind. Das Gelenk 8'' ist im Abstand zu dem Gelenk 8 am Tragarm 1 angeordnet. Mit dem Laschenpaar 30,31 kann der Federweg des Federgliedes 11 variiert werden. Im weiteren ist noch eine Zugfeder 27 vorgesehen, welche am zweiten Gelenk 8' sowie am Tragarm 1 befestigt ist.In the chair frame according to FIG. 3, one end of the spring member 11 is supported on a first pair of tabs 30 and 31, of which one tab 30 on the backrest-side joint 9 of the two supports 3 and 4 and the other plate 31 on a joint 8 '' are supported. The joint 8 ″ is arranged at a distance from the joint 8 on the support arm 1. The spring travel of the spring member 11 can be varied with the pair of tabs 30, 31. In addition, a tension spring 27 is also provided, which is fastened to the second joint 8 ′ and to the support arm 1.

Bei dem Stuhlgestell gemäss Fig.4 sind die beiden Teile 3 und 4 rückenlehnenseitig über die an den Gelenken 9 und 13 angeordnete Lasche 25 miteinander verbunden und durch die Gelenke 5 und 8 schwenkbar am Tragarm 1 gelagert. Für die Abstützung des Federglieds 11 ist ein zweites Laschenpaar 32,33 vorgesehen, von welchem die eine Lasche 32 am rückenlehnenseitigen Gelenk 9 des Sitzträgers 3 und die andere Lasche 33 am ersten Gelenk 8 des Tragarms 1 gelagert ist.In the chair frame according to FIG. 4, the two parts 3 and 4 are connected to one another on the backrest side via the tab 25 arranged on the joints 9 and 13 and are pivotably mounted on the support arm 1 by the joints 5 and 8. To support the spring member 11, a second pair of plates 32, 33 is provided, of which one plate 32 is mounted on the joint 9 of the seat support 3 on the backrest and the other plate 33 on the first joint 8 of the support arm 1.

Claims (4)

  1. Chair frame having a supporting part (2) formed as a pedestal, a supporting arm (1) arranged thereon in a projecting manner, and a seat support (3) coupled in a jointed manner at the knee end to the supporting arm (1) and at the backrest end to a backrest support (4), wherein the backrest support (4), which is operatively connected to a spring element supported at the knee side on the supporting arm (1), is connected in a jointed manner by the end facing the supporting arm (1) and can recline together with the seat support (3), characterised in that, on the supporting arm (1), there is arranged a link plate (10) provided with joints (8, 6, 8') arranged at a distance from each other in the downward-oriented direction relative to the seat support (3), which link plate (10) is mounted on the supporting arm (1) by means of the first joint (8) and is operatively connected by means of the second joint (8') to one end of the spring element which is formed as a gas pressure spring (11) and supported on the supporting arm (1) in a jointed manner at the other end in the front knee region, and is connected in a jointed manner by means of the third joint (6) arranged between the first and second joint (8, 8') to the knee end of the backrest support (4), and in that the distance forming a first lever (7) between the second joint (8') and the third joint (6) is greater than the distance forming a second lever (7') between the first joint (8) and the third joint (6).
  2. Chair frame having a supporting part (2) formed as a pedestal, a supporting arm (1) arranged thereon in a projecting manner, and a seat support (3) coupled in a jointed manner at the knee end to the supporting arm (1) and at the backrest end to a backrest support (4) by way of a link plate (25), wherein the backrest support (4), which is operatively connected to a spring element supported at the knee side on the supporting arm (1), is connected in a jointed manner by the end facing the supporting arm (1) and can recline together with the seat support (3), characterised in that the backrest support (4) is mounted by the knee end on a first joint (8) arranged on the supporting arm (1) and has a lever section (23) pre-formed in a bent lever shape and oriented downwards relative to the seat support (3) and provided with a second joint (8'), on which lever section (23) there is supported the spring element (11) which is supported at one end in a jointed manner in the front knee region of the supporting arm (1) and is formed as a gas pressure spring, and in that there is provided a tension spring (26) linked to the backrest support (4) and to the supporting arm (1), the seat support (3) being able to recline together with the backrest support (4) against the restoring force of the said tension spring (26) and to be arrested in any position by means of the gas pressure spring (11).
  3. Chair frame having a supporting part (2) formed as a pedestal, a supporting arm (1) arranged thereon in a projecting manner, and a seat support (3) coupled in a jointed manner at the knee end to the supporting arm (1) and at the backrest end to a backrest support (4), wherein the backrest support (4), which is operatively connected to a spring element supported at the knee side on the supporting arm (1), is connected in a jointed manner by the end facing the supporting arm (1) and can recline together with the seat support (3), characterised in that the backrest support (4) is mounted by the knee end on a first joint (8) arranged on the supporting arm (1), and a further joint (8'') is provided on the supporting arm (1) at a distance from the first joint (8), to which further joint (8'') there is linked a link plate (31) oriented downwards relative to the seat support (3) and provided with a second joint (8'), on which link plate (31) there is supported the spring element (11) which is supported in a jointed manner by one end in the front knee region of the supporting arm (1) and is formed as a gas pressure spring (11), and on which link plate (31) there is also supported a link plate (30) mounted at the backrest end on a joint (9) arranged on a seat and backrest support (3, 4), and in that there is provided a tension spring (27) linked at the backrest side to the supporting arm (1) and at the knee side to the second joint (8') of the link plate pair (30, 31), the seat support (3) being able to recline together with the backrest support (4) against the restoring force of the said tension spring (27) and to be arrested in any position by means of the gas pressure spring (11).
  4. Chair frame having a supporting part (2) formed as a pedestal, a supporting arm (1) arranged thereon in a projecting manner, and a seat support (3) coupled in a jointed manner at the knee end to the supporting arm (1) and at the backrest end to a backrest support (4) by way of a link plate (25), wherein the backrest support (4), which is operatively connected to a spring element supported at the knee side on the supporting arm (1), is connected in a jointed manner by the end facing the supporting arm (1) and can recline together with the seat support (3), characterised in that the backrest support (4) is mounted by the knee end on a first joint (8) arranged on the supporting arm (1), to which first joint there is linked a link plate (33) oriented downwards relative to the seat support (3) and provided with a second joint (8'), on which link plate (33) there is supported the spring element (11) which is supported in a jointed manner by one end in the front knee region of the supporting arm (1) and is formed as a gas pressure spring (11), and on which link plate (33) there is also supported a link plate (32) mounted at the backrest end on a joint (9) arranged on a seat and backrest support (3, 4), and in that there is provided a tension spring (26) linked at the backrest side to the supporting arm (1) and to the backrest support (4), the seat support (3) being able to recline together with the backrest support (4) against the restoring force of the said tension spring (26) and to be arrested in any position by means of the gas pressure spring (11).
EP89102231A 1984-10-03 1985-09-09 Chair frame with a reclining seat and a backrest support Expired - Lifetime EP0322400B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT8989102231T ATE104835T1 (en) 1984-10-03 1989-02-09 CHAIR FRAME WITH REVERSIBLE SEAT AND BACKREST SUPPORT.

Applications Claiming Priority (3)

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
EP85111372A EP0176816B1 (en) 1984-10-03 1985-09-09 Chair with reclining seat and backrest support

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP85111372.0 Division 1985-09-09

Publications (3)

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

Family

ID=4282037

Family Applications (2)

Application Number Title Priority Date Filing Date
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

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP85111372A Expired EP0176816B1 (en) 1984-10-03 1985-09-09 Chair with reclining seat and 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) DE3573209D1 (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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Also Published As

Publication number Publication date
EP0322400A3 (en) 1989-07-19
FI81245C (en) 1990-10-10
AU4617885A (en) 1986-04-10
EP0176816A1 (en) 1986-04-09
EP0176816B1 (en) 1989-09-27
ZA857307B (en) 1986-06-25
DK164630C (en) 1992-12-14
NO853896L (en) 1986-04-04
NO166213B (en) 1991-03-11
JPH0421482B2 (en) 1992-04-10
AU577143B2 (en) 1988-09-15
CH666171A5 (en) 1988-07-15
DK164630B (en) 1992-07-27
US4684173A (en) 1987-08-04
NO900023D0 (en) 1990-01-04
PT81046A (en) 1985-09-01
JPS6187505A (en) 1986-05-02
FI853811L (en) 1986-04-04
NO166213C (en) 1991-06-19
DE3587809D1 (en) 1994-06-01
DK448185D0 (en) 1985-10-02
BR8504774A (en) 1986-07-22
ATE104835T1 (en) 1994-05-15
FI853811A0 (en) 1985-10-02
PT81046B (en) 1987-08-19
DE3573209D1 (en) 1989-11-02
NO900023L (en) 1986-04-04
FI81245B (en) 1990-06-29
EP0322400A2 (en) 1989-06-28
DK448185A (en) 1986-04-04
CA1252036A (en) 1989-04-04
ATE46608T1 (en) 1989-10-15

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