EP0336288B1 - Chair frame - Google Patents

Chair frame Download PDF

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Publication number
EP0336288B1
EP0336288B1 EP89105589A EP89105589A EP0336288B1 EP 0336288 B1 EP0336288 B1 EP 0336288B1 EP 89105589 A EP89105589 A EP 89105589A EP 89105589 A EP89105589 A EP 89105589A EP 0336288 B1 EP0336288 B1 EP 0336288B1
Authority
EP
European Patent Office
Prior art keywords
supporting arm
seat
chair
back rest
supported
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
EP89105589A
Other languages
German (de)
French (fr)
Other versions
EP0336288A1 (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 AT89105589T priority Critical patent/ATE84949T1/en
Publication of EP0336288A1 publication Critical patent/EP0336288A1/en
Application granted granted Critical
Publication of EP0336288B1 publication Critical patent/EP0336288B1/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
    • 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
    • A47C7/441—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with adjustable elasticity
    • 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
    • A47C7/445—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf 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
    • A47C7/446—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 part, a backrest part and a support arm supported on a support column designed as a pedestal, in which chair the seat part in the knee-side area by means of a spring-elastic arch part on the support arm and the backrest part via backrest struts on one with the support arm operatively connected spring element is supported.
  • a chair which essentially comprises a seat part and a backrest part, these parts being provided with a lever linkage with an associated cradle on a support arm of a support part designed as a base frame via an approximately parallelogram-like lever linkage which is operatively connected to a spring element are supported.
  • the seat part is arranged in the knee-side area via a spring-elastic arch part on the cradle, and in addition a bending groove oriented transversely to the direction of the seat is provided at the transition from the seat part to the backrest part.
  • the forces occurring on the spring element designed as a gas spring are essentially on the parallelogram lever linkage supported so that the gas spring can be dimensioned correspondingly smaller and an adjustment depending on the respective user weight is not necessary.
  • the invention is based on the object, using relatively simple, constructive means, on the one hand to keep the spring force which occurs in the knee-side arch part when the seat and backrest part is in a relax-oriented rearward position, and on the other hand to provide additional adjustability to enable the load dependent on the respective user.
  • this object is achieved in that the knee-side arch part is mounted with a bow section arranged at a distance from the seat part on a first articulation point provided on the support arm in such a way that by changing the distance between the seat part and the bow section the resilient restoring force of the bow part is adjustable.
  • FIG. 1 schematically shows a section of a chair frame for a chair (not shown), in which the support column of a foot frame (not shown) is 1.
  • a support arm 2 is attached, which extends slightly obliquely upwards against the knee area of the chair frame.
  • the chair frame has a seat part 5, to which a backrest part 6 adjoins.
  • the seat part 5 and the backrest part 6 can be rigidly or articulatedly connected to one another.
  • the backrest part 6 is connected to the seat part 5 by a bending groove 8 which is oriented transversely to the seat direction, whereby the backrest part 6 can also be pivoted rearwards relative to the seat part 5.
  • the pivoting movement of the backrest part 6 takes place against the restoring force of the bending groove 8.
  • the seat part 5 is guided around the support arm 2 in the knee-side area via a spring-elastic arch part 10 and is mounted on a first articulation point 11 arranged on the underside of the support arm 2.
  • the arch part 10 is provided with an arch section 10 'formed as an extension, which arch section 10' is designed as a lever 12 extending against the support column 1.
  • An adjusting screw 13 is mounted on the lever 12. Since the lever 12 changes its position and inclination when the seat part 5 is loaded, a threaded ring 14 is pivotably mounted in the lever 12. The adjusting screw 13 screwed into the threaded ring 14 is rotatably supported on the underside of the support arm 2. By turning the adjusting screw 13, the lever 12 can be moved in the direction of the double arrow 17 against the support arm 2 or away from it.
  • one or two backrest struts 15 are arranged in the region of the backrest part 6, which are attached at one end to the seat part 5 by a rigid connection, for example by a screw connection 16.
  • the two backrest struts 15 are arranged on both sides of the support arm 2 and are mounted on a slide 20 via a swivel joint 18.
  • the slide 20 is arranged in the interior of the support arm 2 and has a lower part 21 protruding from the support arm 2, on which lower part 21 the swivel joint 18 is arranged.
  • the support arm 2 is designed as a hollow profile body, for example in the form of a square tube, on the underside of which a longitudinal slot (not shown) extending in the longitudinal direction of the support arm 2 is provided.
  • the slide 20 consists of an inner part 22 arranged in the support arm 2 and an outer lower part 21. The two parts 21 and 22 of the slide 20 are connected to one another, for example, by a screw (not shown) penetrating the longitudinal slot.
  • the slide 20 is guided largely without play on the underside of the support arm 2.
  • the piston rod 23 of a gas spring 24 is articulated on the inner part 22 of the slide 20.
  • the cylinder 26 of the gas spring 24 is supported and supported at two articulation points 25 arranged opposite one another on the side walls of the support arm 2.
  • the control rod 27 of the gas spring 24 is operatively connected to a known actuating device (not shown) and can be operated by the user of the chair.
  • the slide 20 is replaced by one or two tabs 28.
  • the two tabs 28 are each mounted on the support arm 2 with one end designed as a swivel joint 29, while the other end is each designed as a swivel joint 18 on which the gas spring 24 and the backrest struts 15 are mounted.
  • the elements which are further shown in FIG. 2 and are not designated by reference numerals correspond to the elements designated in FIG. 1.
  • the chair frame described in connection with FIG. 1 and FIG. 2 has a relatively simple construction, in which the support arm 2 designed as a hollow profile body, the gas spring 24 mounted in the support arm 2 and the slide 20 connected to it, or the two tabs 28 and the backrest struts 15 supported thereon form the essential functional elements.
  • the resilient restoring force of the arch part 10 is adjusted by means of the adjusting screw 13 according to the requirements of the respective user.
  • the chair can then be swiveled into the desired relax position and blocked in this position by the gas spring 24.
  • the gas spring 24 By loosening the gas spring 24, the chair can be pivoted into another desired position and blocked again by means of the gas spring 24.

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Materials For Medical Uses (AREA)
  • Gloves (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Seats For Vehicles (AREA)
  • Lubricants (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Abstract

The chair frame is composed of a seat part (5) and a backrest part (6). Adjoining the knee-side end of the seat part (5) is a flexible spring joint (10) which is attached to the free end of a bearing arm (2) by means of a hinge (11). Attached to the backrest part (6) is a backrest strut (15) which is mounted by means of a hinge (18) on a slide (20) which is guided displaceably in a bearing arm (2). Mounted in the bearing arm (2) is a compression spring (24), one end of which is connected to the slide (20), whereas the other end is mounted by means of a hinge (25) in the side walls of the bearing arm (2). Adjoining the knee-side flexible spring joint (10) is a lever (12), on which an adjusting screw (13) is arranged, with which the prestress of the knee-side flexible spring joint (10) can be adjusted. The chair frame is simple compared to known designs and requires only one small compression spring (24). <IMAGE>

Description

Die Erfindung bezieht sich auf einen Stuhl mit einem Sitzteil, einem Rückenlehnenteil sowie einem an einer als Fussgestell ausgebildeten Tragsäule abgestützten Tragarm, bei welchem Stuhl das Sitzteil im knieseitigen Bereich mittels eines federelastisch wirkenden Bogenteils an dem Tragarm und das Rückenlehnenteil über Rückenlehnenstreben an einem mit dem Tragarm wirkverbundenen Federelement abgestützt ist.The invention relates to a chair with a seat part, a backrest part and a support arm supported on a support column designed as a pedestal, in which chair the seat part in the knee-side area by means of a spring-elastic arch part on the support arm and the backrest part via backrest struts on one with the support arm operatively connected spring element is supported.

Aus der EP-A 0 264 029 ist ein Stuhl bekannt, welcher im wesentlichen ein Sitzteil und ein Rückenlehnenteil umfasst, wobei diese Teile über ein etwa parallelogrammartig ausgebildetes und mit einem Federelement in Wirkverbindung stehendes Hebelgestänge mit zugeordneter Wiege an einem Tragarm eines als Fussgestell ausgebildeten Tragteils abgestützt sind. Zur Erreichung einer sogenannten, nach hinten orientierten Relax-Stellung des Sitz- und Rückenlehnenteils ist das Sitzteil im knieseitigen Bereich über ein federelastisch wirkendes Bogenteil an der Wiege angeordnet, und zudem ist am Übergang vom Sitzteil zum Rückenlehnenteil eine quer zur Sitzrichtung orientierte Biegekehle vorgesehen.
Bei diesem Stuhl werden die an dem als Gasfeder ausgebildeten Federelement auftretenden Kräfte im wesentlichen am Parallelogramm-Hebelgestänge abgestützt, so dass die Gasfeder entsprechend kleiner dimensioniert werden kann und eine vom jeweiligen Benutzergewicht abhängige Einstellung nicht erforderlich ist.From EP-A 0 264 029 a chair is known which essentially comprises a seat part and a backrest part, these parts being provided with a lever linkage with an associated cradle on a support arm of a support part designed as a base frame via an approximately parallelogram-like lever linkage which is operatively connected to a spring element are supported. To achieve a so-called rearward-oriented relax position of the seat and backrest part, the seat part is arranged in the knee-side area via a spring-elastic arch part on the cradle, and in addition a bending groove oriented transversely to the direction of the seat is provided at the transition from the seat part to the backrest part.
In this chair, the forces occurring on the spring element designed as a gas spring are essentially on the parallelogram lever linkage supported so that the gas spring can be dimensioned correspondingly smaller and an adjustment depending on the respective user weight is not necessary.

Ausgehend von dem eingangs genannten Stuhl, liegt der Erfindung die Aufgabe zugrunde, mit relativ einfachen, konstruktiven Mitteln einerseits die bei einer nach hinten orientierten Relax-Stellung des Sitz- und Rückenlehnenteils im knieseitigen Bogenteil auftretende Federkraft möglichst gering zu halten und andererseits eine zusätzliche Einstellbarkeit auf die vom jeweiligen Benutzer abhängige Belastung zu ermöglichen.Based on the chair mentioned at the outset, the invention is based on the object, using relatively simple, constructive means, on the one hand to keep the spring force which occurs in the knee-side arch part when the seat and backrest part is in a relax-oriented rearward position, and on the other hand to provide additional adjustability to enable the load dependent on the respective user.

Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass das knieseitige Bogenteil mit einem im Abstand zum Sitzteil angeordneten Bogen-Teilstück an einer am Tragarm vorgesehenen ersten Gelenkstelle derart gelagert ist, dass durch Änderung des Abstandes zwischen dem Sitzteil und dem Bogen-Teilstück die federelastische Rückstellkraft des Bogenteils einstellbar ist.According to the invention, this object is achieved in that the knee-side arch part is mounted with a bow section arranged at a distance from the seat part on a first articulation point provided on the support arm in such a way that by changing the distance between the seat part and the bow section the resilient restoring force of the bow part is adjustable.

Weitere Merkmale der Erfindung ergeben sich aus der folgenden Beschreibung in Verbindung mit der Zeichnung und den Patentansprüchen.Further features of the invention will become apparent from the following description in conjunction with the drawing and the claims.

Die Erfindung wird nachstehend anhand der Zeichnung beschrieben. Es zeigt:

  • Fig. 1 ein schematisch und in Seitenansicht dargestelltes Stuhlgestell-Teilstück, und
  • Fig. 2 eine schematisch und in Seitenansicht dagestellte Variante des Stuhlgestell-Teilstücks.
The invention is described below with reference to the drawing. It shows:
  • Fig. 1 is a schematic and side view of a chair frame section, and
  • Fig. 2 is a schematic and shown in side view variant of the chair frame section.

In Fig.1 ist schematisch ein Stuhlgestell-Teilstück für einen nicht näher bezeichneten Stuhl dargestellt, bei welchem mit 1 die Tragsäule eines nicht dargestellten Fussgestells bezeichnet ist. An der Tragsäule 1 ist ein Tragarm 2 befestigt, welcher sich leicht schräg nach oben gegen den knieseitigen Bereich des Stuhlgestells erstreckt.1 schematically shows a section of a chair frame for a chair (not shown), in which the support column of a foot frame (not shown) is 1. On the support column 1, a support arm 2 is attached, which extends slightly obliquely upwards against the knee area of the chair frame.

Das Stuhlgestell hat ein Sitzteil 5, an welches sich ein Rükkenlehnenteil 6 anschliesst. Das Sitzteil 5 und das Rückenlehnenteil 6 können starr oder gelenkig miteinander verbunden sein. Wie in Fig.1 und Fig.2 dargestellt, ist das Rückenlehnenteil 6 durch eine quer zur Sitzrichtung orientierte, rinnenartig ausgebildete Biegekehle 8 mit dem Sitzteil 5 verbunden, wodurch das Rückenlehnenteil 6 gegenüber dem Sitzteil 5 zusätzlich nach hinten schwenkbar ist. Die Schwenkbewegung des Rückenlehnenteils 6 erfolgt gegen die Rückstellkraft der Biegekehle 8.The chair frame has a seat part 5, to which a backrest part 6 adjoins. The seat part 5 and the backrest part 6 can be rigidly or articulatedly connected to one another. As shown in FIG. 1 and FIG. 2, the backrest part 6 is connected to the seat part 5 by a bending groove 8 which is oriented transversely to the seat direction, whereby the backrest part 6 can also be pivoted rearwards relative to the seat part 5. The pivoting movement of the backrest part 6 takes place against the restoring force of the bending groove 8.

Das Sitzteil 5 ist, wie in Fig.1 und Fig.2 im Profilquerschnitt dargestellt, im knieseitigen Bereich über ein federelastisch wirkendes Bogenteil 10 um den Tragarm 2 geführt und an einer an der Unterseite des Tragarms 2 angeordneten ersten Gelenkstelle 11 gelagert. Das Bogenteil 10 ist mit einem als Verlängerung ausgebildeten Bogen-Teilstück 10′ versehen, welches Bogen-Teilstück 10′ als ein sich gegen die Tragsäule 1 erstreckender Hebel 12 ausgebildet ist. An dem Hebel 12 ist eine Verstellschraube 13 gelagert. Da sich der Hebel 12 bei Belastung des Sitzteils 5 in seiner Lage und Neigung ändert, ist im Hebel 12 ein Gewindering 14 schwenkbar gelagert. Die in dem Gewindering 14 eingeschraubte Verstellschraube 13 ist an der Unterseite des Tragarms 2 drehbar abgestützt. Durch Drehen der Verstellschraube 13 kann der Hebel 12 in Richtung des Doppelpfeiles 17 gegen den Tragarm 2 oder aber von diesem weg bewegt werden.As shown in FIG. 1 and FIG. 2 in the cross-section of the profile, the seat part 5 is guided around the support arm 2 in the knee-side area via a spring-elastic arch part 10 and is mounted on a first articulation point 11 arranged on the underside of the support arm 2. The arch part 10 is provided with an arch section 10 'formed as an extension, which arch section 10' is designed as a lever 12 extending against the support column 1. An adjusting screw 13 is mounted on the lever 12. Since the lever 12 changes its position and inclination when the seat part 5 is loaded, a threaded ring 14 is pivotably mounted in the lever 12. The adjusting screw 13 screwed into the threaded ring 14 is rotatably supported on the underside of the support arm 2. By turning the adjusting screw 13, the lever 12 can be moved in the direction of the double arrow 17 against the support arm 2 or away from it.

Mit der Verstellschraube 13 kann eine Änderung des Abstandes zwischen dem Sitzteil 5 und dem Bogenteil 10 bzw. Bogenteilstück 10′ bewirkt und somit die Vorspannung des federelastisch wirkenden Bogenteils 10 vergrössert oder verkleinert werden.With the adjusting screw 13, a change in the distance between the seat part 5 and the arch part 10 or arch section 10 'causes and thus the bias of the spring-elastic arch part 10 can be increased or decreased.

An der Unterseite des Sitzteils 5 sind im Bereich des Rückenlehnenteils 6 ein oder zwei Rückenlehnenstreben 15 angeordnet, welche mit dem einen Ende am Sitzteil 5 durch eine starre Verbindung, beispielsweise durch eine Schraubverbindung 16, befestigt sind. Mit dem anderen Ende sind die beiden Rükkenlehnenstreben 15 auf beiden Seiten des Tragarms 2 angeordnet über ein Drehgelenk 18 an einem Schieber 20 gelagert. Der Schieber 20 ist im Inneren des Tragarms 2 angeordnet und weist ein aus dem Tragarm 2 ragendes Unterteil 21 auf, an welchem Unterteil 21 das Drehgelenk 18 angeordnet ist.On the underside of the seat part 5, one or two backrest struts 15 are arranged in the region of the backrest part 6, which are attached at one end to the seat part 5 by a rigid connection, for example by a screw connection 16. With the other end, the two backrest struts 15 are arranged on both sides of the support arm 2 and are mounted on a slide 20 via a swivel joint 18. The slide 20 is arranged in the interior of the support arm 2 and has a lower part 21 protruding from the support arm 2, on which lower part 21 the swivel joint 18 is arranged.

Der Tragarm 2 ist als Hohlprofil-Körper, beispielsweise in Form eines Vierkantrohres, ausgebildet, an dessen Unterseite ein nicht dargestellter, sich in Längsrichtung des Tragarms 2 erstreckender Längsschlitz vorgesehen ist. Der Schieber 20 besteht aus einem im Tragarm 2 angeordneten Innenteil 22 und einem aussen liegenden Unterteil 21. Die beiden Teile 21 und 22 des Schiebers 20 sind beispielsweise durch eine den Längsschlitz durchdringende Schraube (nicht dargestellt) miteinander verbunden. Der Schieber 20 ist weitgehend spielfrei an der Unterseite des Tragarms 2 geführt. An dem Innenteil 22 des Schiebers 20 ist die Kolbenstange 23 einer Gasfeder 24 angelenkt. Der Zylinder 26 der Gasfeder 24 ist an zwei gegenüberliegend an den Seitenwänden des Tragarms 2 angeordnete Gelenkstellen 25 abgestützt und gelagert. Die Steuerstange 27 der Gasfeder 24 ist mit einer an sich bekannten Betätigungsvorrichtung (nicht dargestellt) wirkverbunden und vom Benutzer des Stuhls betätigbar.The support arm 2 is designed as a hollow profile body, for example in the form of a square tube, on the underside of which a longitudinal slot (not shown) extending in the longitudinal direction of the support arm 2 is provided. The slide 20 consists of an inner part 22 arranged in the support arm 2 and an outer lower part 21. The two parts 21 and 22 of the slide 20 are connected to one another, for example, by a screw (not shown) penetrating the longitudinal slot. The slide 20 is guided largely without play on the underside of the support arm 2. The piston rod 23 of a gas spring 24 is articulated on the inner part 22 of the slide 20. The cylinder 26 of the gas spring 24 is supported and supported at two articulation points 25 arranged opposite one another on the side walls of the support arm 2. The control rod 27 of the gas spring 24 is operatively connected to a known actuating device (not shown) and can be operated by the user of the chair.

Bei der in Fig.2 dargestellten Variante ist der Schieber 20 durch eine beziehungsweise durch zwei Laschen 28 ersetzt. Die beiden Laschen 28 sind jeweils mit dem einen, als Drehgelenk 29 ausgebildeten Ende am Tragarm 2 gelagert, während das andere Ende jeweils als Drehgelenk 18 ausgebildet ist, an welches die Gasfeder 24 sowie die Rückenlehnenstreben 15 gelagert sind. Die weiterhin in Fig.2 dargestellten und nicht näher mit Bezugszahlen bezeichneten Elemente entsprechen den in Fig.1 bezeichneten Elementen.In the variant shown in Figure 2, the slide 20 is replaced by one or two tabs 28. The two tabs 28 are each mounted on the support arm 2 with one end designed as a swivel joint 29, while the other end is each designed as a swivel joint 18 on which the gas spring 24 and the backrest struts 15 are mounted. The elements which are further shown in FIG. 2 and are not designated by reference numerals correspond to the elements designated in FIG. 1.

Das in Verbindung mit Fig.1 und Fig.2 beschriebene Stuhlgestell hat einen relativ einfachen konstruktionen Aufbau, bei welchem der als Hohlprofil-Körper ausgebildete Tragarm 2, die im Tragarm 2 gelagerte Gasfeder 24 und der damit wirkverbundene Schieber 20 oder die beiden Laschen 28 sowie die daran abgestützten Rückenlehnenstreben 15 die wesentlichen Funktionselemente bilden.The chair frame described in connection with FIG. 1 and FIG. 2 has a relatively simple construction, in which the support arm 2 designed as a hollow profile body, the gas spring 24 mounted in the support arm 2 and the slide 20 connected to it, or the two tabs 28 and the backrest struts 15 supported thereon form the essential functional elements.

Bei Benutzung des erfindungsgemässen Stuhls wird mittels der Verstellschraube 13 die federelastische Rückstellkraft des Bogenteils 10 entsprechend den Anforderungen des jeweiligen Benutzers eingestellt. Danach kann der Stuhl in die gewünschte Relax-Stellung geschwenkt und durch die Gasfeder 24 in dieser Stellung blockiert werden. Durch Lösen der Gasfeder 24 kann der Stuhl in eine andere gewünschte Stellung geschwenkt und mittels der Gasfeder 24 wieder blockiert werden.When using the chair according to the invention, the resilient restoring force of the arch part 10 is adjusted by means of the adjusting screw 13 according to the requirements of the respective user. The chair can then be swiveled into the desired relax position and blocked in this position by the gas spring 24. By loosening the gas spring 24, the chair can be pivoted into another desired position and blocked again by means of the gas spring 24.

Claims (4)

  1. Chair with a seat portion (5), a back rest portion (6) and also a supporting arm (2) which is supported on a supporting column (1) formed as a pedestal, in which chair the seat portion (5) is supported on the supporting arm (2) in the knee-back region by means of a curved portion (10) which acts in a resiliently elastic manner, and the back rest portion (6) is supported by way of back rest struts (15) on a spring element (24) which is operatively connected with the supporting arm (2), in which the knee-back curved portion (10) is mounted with a section (10′) of the curve, arranged at a distance from the seat portion (5), at a first point of articulation (11) provided on the supporting arm (2) in such a way that by changing the distance between the seat portion (5) and the section (10′) of the curve the resiliently elastic restoring force of the curved portion (10) can be adjusted.
  2. Chair according to claim 1, characterised in that pre-formed on the section (10′) of the curve mounted on the supporting arm (2) there is a lever (12) which is orientated in the direction of the supporting column (1) and which is adjustable by means of an adjusting screw (13) for the resiliently elastic restoring force of the curved portion (10) relative to the supporting arm (2).
  3. Chair according to one of the claims 1 and 2, characterised in that
    a) the supporting arm (2) is formed as a hollow body and on the side facing the curved portion (10), which can be adjusted as a function of the spring force, is provided with the first point of articulation (11) for the section (10′) of the curve and also with a second point of articulation (25) for the spring element (24) which is mounted thereon with the one end; and
    b) the spring element (24), which is formed as a gas pressure spring, is articulated with the other end on a slide (21) arranged in an adjustable manner on the supporting arm (2) or on a link (28) pivotally mounted on the supporting arm (2); and
    c) the seat portion (5) is supported on the spring element (24) by means of the back rest struts (15) which are secured with the one end in the region of the back rest portion (6) to the underside of the seat portion (5) and are mounted with the other end on the slide (21) or on the link (28).
  4. Seat according to one of the claims 1 to 3, characterised in that the seat portion (5) is provided in a manner known per se, in the region of the back rest portion (6), with a flexional channel (8) which is orientated transversely to the sitting direction and which is formed in the manner of a groove.
EP89105589A 1988-04-07 1989-03-30 Chair frame Expired - Lifetime EP0336288B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89105589T ATE84949T1 (en) 1988-04-07 1989-03-30 CHAIR FRAME.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1276/88 1988-04-07
CH1276/88A CH675817A5 (en) 1988-04-07 1988-04-07

Publications (2)

Publication Number Publication Date
EP0336288A1 EP0336288A1 (en) 1989-10-11
EP0336288B1 true EP0336288B1 (en) 1993-01-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89105589A Expired - Lifetime EP0336288B1 (en) 1988-04-07 1989-03-30 Chair frame

Country Status (15)

Country Link
US (1) US5033791A (en)
EP (1) EP0336288B1 (en)
JP (1) JPH01305905A (en)
AT (1) ATE84949T1 (en)
AU (1) AU615046B2 (en)
BR (1) BR8901620A (en)
CA (1) CA1299988C (en)
CH (1) CH675817A5 (en)
DE (1) DE58903374D1 (en)
DK (1) DK166589A (en)
ES (1) ES2037305T3 (en)
FI (1) FI891656A (en)
NO (1) NO891437L (en)
PT (1) PT90064B (en)
ZA (1) ZA891739B (en)

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CN109288304A (en) * 2018-11-16 2019-02-01 张薇 Elastic force sofa

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GB9027090D0 (en) * 1990-12-13 1991-02-06 Acf Int Ltd Improvements relating to chairs
DE4209049C2 (en) * 1992-03-20 1995-05-11 Kloeber Gmbh & Co Working armchair with flat synchronous mechanism
CA2319881C (en) 1992-06-15 2001-10-30 Herman Miller, Inc. Office chair
JP2596820Y2 (en) * 1993-07-27 1999-06-21 株式会社内田洋行 Chair
DE4410383C2 (en) * 1994-03-25 1996-07-25 Desanta chair
AU2954695A (en) 1994-06-10 1996-01-05 Haworth Inc. Ergonomic chair
US5765914A (en) * 1995-06-07 1998-06-16 Herman Miller, Inc. Chair with a tilt control mechanism
US5979978A (en) * 1995-09-08 1999-11-09 Advanced Composites, Inc. Adjustable seat post clamp assembly for human-powered vehicles
US5918935A (en) * 1997-06-03 1999-07-06 Stulik; Edward L. Reclining chair
US6585320B2 (en) 2001-06-15 2003-07-01 Virco Mgmt. Corporation Tilt control mechanism for a tilt back chair
DE10219478B4 (en) * 2002-04-30 2006-07-13 Klöber GmbH Chair with user weight dependent power storage
JP4137536B2 (en) * 2002-07-03 2008-08-20 コクヨ株式会社 Chair
DE102006023981A1 (en) * 2006-05-22 2007-12-06 Wilkhahn Wilkening + Hahne Gmbh & Co. Kg chair
US7674215B1 (en) * 2007-10-23 2010-03-09 Brunswick Corporation Exercise apparatus seat
US20110304192A1 (en) * 2010-06-15 2011-12-15 Augustat Betty A Ergometric Chair Apparatus
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering
USD697726S1 (en) 2012-09-20 2014-01-21 Steelcase Inc. Chair
US11197548B2 (en) * 2019-12-16 2021-12-14 Allseating Corporation Reclining control system for a chair

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CA1184108A (en) * 1984-04-09 1985-03-19 David W. Smith Suspension arrangement for a tilting chair
DE8607194U1 (en) * 1986-03-15 1986-04-30 Drabert Söhne Minden (Westf.), 4950 Minden Seating
US5050931A (en) * 1986-04-10 1991-09-24 Steelcase Inc. Controlled deflection front lip for seating
US4744600A (en) * 1986-05-06 1988-05-17 Itoki Co., Ltd. Cushioning mechanism for use with seat of chair and interlocking cushioning mechanism for seat and backrest
US4711491A (en) * 1986-06-09 1987-12-08 Jonathan Ginat Swivel tilt mechanism for chair
CH670363A5 (en) * 1986-09-24 1989-06-15 Giroflex Entwicklungs Ag
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109288304A (en) * 2018-11-16 2019-02-01 张薇 Elastic force sofa
CN109288304B (en) * 2018-11-16 2020-11-13 江西金橡木业有限公司 Elastic sofa

Also Published As

Publication number Publication date
AU615046B2 (en) 1991-09-19
CH675817A5 (en) 1990-11-15
JPH01305905A (en) 1989-12-11
ATE84949T1 (en) 1993-02-15
EP0336288A1 (en) 1989-10-11
DK166589D0 (en) 1989-04-06
PT90064A (en) 1989-11-10
ES2037305T3 (en) 1993-06-16
NO891437L (en) 1989-10-09
DE58903374D1 (en) 1993-03-11
DK166589A (en) 1989-10-08
US5033791A (en) 1991-07-23
CA1299988C (en) 1992-05-05
AU3251589A (en) 1989-10-12
BR8901620A (en) 1989-11-21
FI891656A0 (en) 1989-04-06
ZA891739B (en) 1989-11-29
FI891656A (en) 1989-10-08
NO891437D0 (en) 1989-04-06
PT90064B (en) 1994-03-31

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