EP0397661B1 - Chair, in particular work or office chair - Google Patents

Chair, in particular work or office chair Download PDF

Info

Publication number
EP0397661B1
EP0397661B1 EP88909998A EP88909998A EP0397661B1 EP 0397661 B1 EP0397661 B1 EP 0397661B1 EP 88909998 A EP88909998 A EP 88909998A EP 88909998 A EP88909998 A EP 88909998A EP 0397661 B1 EP0397661 B1 EP 0397661B1
Authority
EP
European Patent Office
Prior art keywords
slider
backrest
rest
seat
spring
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
EP88909998A
Other languages
German (de)
French (fr)
Other versions
EP0397661A1 (en
Inventor
Siegfried Keusch
Günter Kratz
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.)
Haworth Buroeinrichtungen GmbH
Original Assignee
Roeder GmbH
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 Roeder GmbH filed Critical Roeder GmbH
Priority to AT88909998T priority Critical patent/ATE77217T1/en
Publication of EP0397661A1 publication Critical patent/EP0397661A1/en
Application granted granted Critical
Publication of EP0397661B1 publication Critical patent/EP0397661B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03238—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
    • 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
    • A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
    • 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

Definitions

  • the invention relates to a chair, in particular a work or office chair, with a backrest bar that can be changed in inclination relative to the seat and a backrest that can be adjusted thereon by means of a slide or the like, the slide or the like Backrest bar is slidable towards the seat.
  • the known chairs of this type offer excellent seating comfort, since on the one hand they provide clear support for the back of the user in the starting or working position thanks to the practically vertical position of the backrest, but on the other hand they allow relaxed sitting after the backrest bar has been tilted backwards.
  • the backrest bar When the backrest bar is tilted backwards, the upper body of the user does not simply make a swiveling movement, but rather a movement superimposed from various movement components results. Since the backrest performs an additional downward movement towards the seat when the backrest bar is tilted backwards, a relative movement between the back of the user and the backrest is avoided or at least reduced to an undetectable value
  • the backrest is connected to a slide or the like, which is additionally adjustable in or on the slide or the like via a predetermined adjustment path and can be fixed in several positions
  • the adjustment device has only a single toggle lever , which is mounted on a bearing bracket supporting the seat or on a seat bracket which can be changed in inclination about a horizontal pivot axis, such that an extension of the backrest is articulated to the end of one lever arm of the toggle lever, and that the end of the other lever arm of the toggle lever can be pivoted by means of a driving pin or the like of the backrest bar and / or the seat support in such a way that when the backrest bar is tilted back and / or the seat support is lowered one lever arm of the toggle lever adjusts the extension and thus the backrest in the direction of the pedestal or seat support.
  • the actuating device comprises only a single toggle lever, which takes over the disproportionate change in the inclination of the backrest bar when changing the inclination of the seat and at the same time ensures a relative movement between the backrest and the seat, which avoids the pull-out effect.
  • the backrest with the slide or the like can be influenced via a separate adjustment path without influencing the adjustment path of the slide or the like, which is carried out automatically via the adjustment device a basic setting can be brought that is adapted to the body size of the user.
  • the anatomical design of the backrest therefore comes into full effect for every user regardless of their body size and with a relatively small additional effort.
  • the locking position between the locking pin and the slide or the like After releasing the button, the locking position between the locking pin and the slide or the like. Then sets itself automatically if it is provided that the button is supported on the slide or the like by means of an elastic element as a return spring and with extensions to behind the spring in the highest position of the backrest and thus the slide or the like.
  • an elastic element as a return spring and with extensions to behind the spring in the highest position of the backrest and thus the slide or the like.
  • a particularly advantageous embodiment is characterized in that the spring is designed as a U-shaped leaf spring which laterally surrounds the slide or the like with its side legs and with its transverse leg on the side of the slide or the like facing the seat or on the backrest facing side of the slider or the like. And that the button on the side facing away from the backrest of the backrest bar is arranged outside the adjustment path of the backrest. The button is then always easily accessible and the spring with the locking pin is easy to accommodate in the backrest bar.
  • the locking force is transmitted symmetrically and uniformly to the locking pin if the configuration is such that the locking pin is attached centrally to the cross leg of the spring and protrudes toward the slide or the like. This and that the series of holes in the slide or the like. are introduced in the center at regular intervals.
  • the adjustment path of the slide or the like in or on the slide or the like is limited by stops which are preferably attached to the slide or the like.
  • the engagement of the locking pin in a bore of the slide or the like is improved in that there: the free end of the locking pin runs into an insertion tip, an insertion cone stump or the like.
  • the adjusting device for the slide or the like is preferably designed so that the adjusting device has only a single toggle lever which is pivotally mounted on a bearing bracket or on the bracket of the bearing bracket in the inclination changeable about a horizontal pivot axis that an extension the backrest is connected in an articulated manner to the end of one lever arm of the toggle lever, and that the end of the other lever arm of the toggle lever can be pivoted by means of a driving pin or the like of the backrest bar and / or the seat support in such a way that when the backrest bar is tilted back and / or lowered of the seat support one lever arm of the toggle lever adjusts the extension and thus the backrest in the direction of the bearing block or seat support.
  • FIGS. 1 and 2 shows a chair in which the backrest bar 6 can be pivotally mounted on the bearing block 2 or the seat support 33.
  • the representation is only limited to the parts that are required for the adjustment of the backrest in a basic setting and the automatic adjustment of the backrest in or on the backrest bar.
  • Fig. 1 shows an adjustment device with the toggle lever 20, which can be pivotally mounted both on the fixed bearing block 2 of a chair and on the seat support 33 which can be changed in inclination relative to the bearing block 2.
  • the slider 5 is guided in an adjustable manner, damping elements 7 preventing or damping adjustment noises.
  • the slide 10 is guided on the slide 5 in an adjustable manner.
  • the carriage 10 carries the horizontally directed tube section 9 to which the backrest 35, not shown, is attached.
  • the spring 8 Arranged between the slide 5 and the slide 10 is the spring 8 designed as a U-shaped leaf spring, which laterally encloses the slide 10 with its side legs and is supported with its transverse leg below the slide 10 on the side of the slide 5 facing the backrest 35.
  • the slider 5 carries in the middle a series of holes 37 which are made at regular intervals.
  • the cross leg of the spring 8 carries in the middle the locking bolt 11, which protrudes in the direction of the slider 5 thereon and preferably runs out at the free end into an insertion tip, an insertion truncated cone or the like, so that it can more easily engage in a bore 37 of the slider 5.
  • the button 12 On the side facing away from the backrest 35, the button 12 is installed in the backrest bar 6, specifically outside the adjustment range of the backrest, which is the Enclose backrest bar 6 and can accommodate in one shot.
  • the key 12 is raised with two extensions to the side of the slide 5 and engages behind the spring 8 even when the slide 10 is in its highest position on the slide 5.
  • the spring 8 By pressing the button 12, the spring 8 can therefore be deflected via the extensions and the locking connection between the locking pin 11 and the slider 5 can be canceled.
  • the slide 10 with the backrest is then adjustable on the slide 5 until the locking pin 11 engages again in a bore 37 of the slide 5 after the button 12 is released.
  • the adjustment path of the slide 10 on the slide 5 is limited to a predetermined value, specifically by stops of the slide 5, which can be designed, for example, as pins inserted into bores. By stopping the slider 10 on these pins, the adjustment path of the sled 10 on the slide 5 is fixed.
  • This additional adjustability of the backrest on the slider 5, which is automatically adjusted even in or on the backrest bar 6 when the backrest bar 6 is tilted backward, permits a basic adjustment of the backrest when the backrest bar 6 is erected steeply and thus an adaptation of the anatomically designed backrest to the body size of the user, in order to obtain the optimal seating comfort adapted to the body size of the user in all positions of the backrest bar 6.
  • the button 12 is supported on the slide 5 by means of the elastic element 21, which can be designed, for example, as a foam block covered by adhesive film 18.
  • This elastic element 21 acts as a return spring, which resets the key 12 after release.
  • the spring 8 is released for engaging the locking pin 11 in a bore 37 of the slide 5.
  • the adjusting device for the slide 5 is designed in the exemplary embodiment as a toggle lever 20 which is rotatably mounted with the pivot axis 19 embodied as a bearing pin on the fixed bearing block 2 or on a pivotable on the bearing block 2 and the inclination of the seat support 33.
  • the bearing pin is mounted in the side legs of the bearing block 2 or seat bracket 33 which is U-shaped in cross section.
  • the opening 32 provides space for the toggle lever 20 so that the overall height can be kept small.
  • the backrest bar 6 is also provided with side legs and is open towards the backrest.
  • the bearing block 2 or the seat support 33 protrudes between the side legs of the backrest bar 6 and is rotatably mounted therein with the pivot axis 16 designed as a bearing pin.
  • the bearing block 2 or the seat support 33 has in the bearing area the recess 31 through which the extension 17 is inserted and is articulated on the hinge pin 22 by means of the bearing sleeve 24.
  • the hinge pin 22 is arranged at the end of a lever arm 28 of the toggle lever 20 which, in the initial position of the chair, ie with the backrest bar 6 erected steeply, such as the bearing block 2 or the seat support 33, runs approximately horizontally.
  • the driving pin 25 is fixed, which is received by the sliding block 26.
  • the sliding block 26 is adjustably guided in the guide slot 27 of the other lever arm 29 of the toggle lever 20.
  • the extension 17 is a separate part which is firmly connected to the slide 5 by means of the connecting lug 23, the screw 15 and the spring ring 14.
  • the driver pin 25 of the backrest rod 6 describes the movement path 36 when pivoting, which lies on a circular path around the pivot axis 16.
  • the other lever arm 29 of the toggle lever 20 is pivoted in the same direction by the driving pin 25.
  • the distance of the driving pin 25 from the pivot axis 19 of the toggle lever 20 changes.
  • the driving pin 25 received by the sliding block 26 is guided in a longitudinally adjustable manner in the guide slot 27 of the other lever arm 29 of the toggle lever 20 in order to carry out its pivoting movement on the movement path 36 unhindered to be able to.
  • the driving pin 25 is additionally adjustably guided in the guide slots of the fixed bearing block 2.
  • the cover 13 covers a part of the open side of the backrest bar 6 outside the adjustment range of the slide 10.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Special Chairs (AREA)

Abstract

PCT No. PCT/DE88/00749 Sec. 371 Date Aug. 20, 1990 Sec. 102(e) Date Aug. 20, 1990 PCT Filed Dec. 3, 1988 PCT Pub. No. WO89/06099 PCT Pub. Date Jul. 13, 1989.A chair, in particular a work or office chair, having a backrest rod which can be adjustably tilted with respect to a seat and a backrest displaceable thereon by means of a slider. When tilted back, the slider is slidable with respect to the backrest rod, in a direction of the seat with a displacement device. The backrest is connected with a cradle which is displaceable over a predetermined displacement path and lockable in several positions with respect to the slider. The displacement device has only a single toggle joint seated pivotally around a horizontal pivot shaft on a pillow block supporting the seat or a seat support which is adjustable in inclination towards the pillow block. An extension of the backrest is flexibly connected with a lever end of one lever arm of the toggle joint. Another lever end of another lever arm of the toggle joint is pivotal with a retaining bolt of the backrest rod and the seat support in such a way, that during backward tilting of backrest rod or lowering of the seat support, the one lever arm of the toggle joint displaces the extension and the backrest towards the pillow block or the seat support.

Description

Die Erfindung betrifft einen Stuhl, insbesondere Arbeits- oder Bürostuhl, mit einem in der Neigung gegenüber dem Sitz veränderbaren Rückenlehnenstab und einer daran mittels eines Schiebers oder dgl. verstellbaren Rückenlehne, wobei der Schieber oder dgl. mittels einer Verstelleinrichtung beim Rückwärtsneigen des Rückenlehnenstabes im oder am Rückenlehnenstab in Richtung zum Sitz verschiebbar ist.The invention relates to a chair, in particular a work or office chair, with a backrest bar that can be changed in inclination relative to the seat and a backrest that can be adjusted thereon by means of a slide or the like, the slide or the like Backrest bar is slidable towards the seat.

Die bekannten Stühle dieser Art bieten einen ausgezeichneten Sitzkomfort, da sie einerseits in der Ausgangs- oder Arbeitsstellung dank der praktisch senkrechten Stellung der Rückenlehne ein eindeutiges Abstützen des Rückens des Benützers erbringen, andererseits aber nach dem Rückwärtsneigen des Rückenlehnenstabes ein entspanntes Sitzen ermöglichen. Beim Rückwärtsneigen des Rückenlehnenstabes macht der Oberkörper des Benützers nicht einfach eine Schwenkbewegung, sondern es ergibt sich eine aus verschiedenen Bewegungskomponenten überlagerte Bewegung. Da die Rückenlehne beim Rückwärtsneigen des Rückenlehnenstabes eine zusätzliche Abwärtsbewegung in Richtung zum Sitz ausführt, wird eine Relativbewegung zwischen dem Rücken des Benützers und der Rückenlehne vermieden oder zumindest auf einen nicht mehr bemerkbaren Wert reduziertThe known chairs of this type offer excellent seating comfort, since on the one hand they provide clear support for the back of the user in the starting or working position thanks to the practically vertical position of the backrest, but on the other hand they allow relaxed sitting after the backrest bar has been tilted backwards. When the backrest bar is tilted backwards, the upper body of the user does not simply make a swiveling movement, but rather a movement superimposed from various movement components results. Since the backrest performs an additional downward movement towards the seat when the backrest bar is tilted backwards, a relative movement between the back of the user and the backrest is avoided or at least reduced to an undetectable value

Diese bekannten Stühle haben den Nachteil, daß die Rückenlehne in der steilen Ausgangsstellung des Rückenlehnenstabes eine definierte Stellung zum Sitz einnimmt, die an eine mittlere Körpergröße des Benutzers angepaßt ist. Da die Rückenlehne eine anatomisch angepaßte Form aufweist, ist das Optimum des Sitzkomforts nur für Benutzer mit annähernd der mittleren Körpergröße erreicht. Mit dieser zusätzlichen Abwärtsbewegung der Rückenlehne in Richtung zum Sitz wird der sogenannte "Auszieheffekt" vermieden. Dazu ist aber eine komplizierte Stelleinrichtung zwischen Sitz, Rückenlehnenstab und Stuhlgestell nötig, wie z.B. die EP-A 0 176 816 zeigt.These known chairs have the disadvantage that the backrest in the steep starting position of the backrest bar occupies a defined position to the seat, which is adapted to an average height of the user. Since the backrest has an anatomically adapted shape, the optimum in seating comfort is only achieved for users of approximately medium height. With this additional downward movement of the backrest in the direction of the seat, the so-called "pull-out effect" is avoided. However, this requires a complicated adjusting device between the seat, backrest bar and chair frame, as is shown, for example, by EP-A 0 176 816.

Aus der US-A 4 616 877 ist es bekannt, einen Stuhl mit einer Rückenlehne herzustellen, wobei die Rückenlehne mit einem Schlitten verbunden ist, der am Rückenlehnenstab in verschiedene Stellungen bringbar und daran arretierbar ist. Dann läßt sich die Position der Rückenlehne an die Körpergröße des Benutzers anpassen.From US-A 4 616 877 it is known to produce a chair with a backrest, the backrest being connected to a carriage which can be brought into different positions on the backrest bar and locked thereon. Then the position of the backrest can be adjusted to the height of the user.

Es ist Aufgabe der Erfindung, einen Stuhl der eingangs erwähnten Art zu schaffen, bei dem sich der Auszieheffekt beim Verändern der Neigung des Sitzes und der Rückenlehne mit einer einfachen Stelleinrichtung vermeiden läßt und bei dem dennoch die Möglichkeit besteht, die Position der Rückenlehne an die Körpergröße des Benutzers anzupassen.It is an object of the invention to provide a chair of the type mentioned, in which the pull-out effect when changing the inclination of the seat and the backrest can be avoided with a simple actuating device and in which there is still the possibility of changing the position of the backrest to the body size of the user.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß die Rückenlehne mit einem Schlitten oder dgl. verbunden ist, der im oder am Schieber oder dgl. zusätzlich über einen vorgegebenen Verstellweg verstellbar und in mehreren Stellungen festlegbar ist, daß die Verstelleinrichtung nur einen einzigen Kniehebel aufweist, der an einem den Sitz tragenden Lagerbock oder an einem am Lagerbock in der Neigung veränderbaren Sitzträger um eine horizontale Schwenkachse schwenkbar gelagert ist, daß eine Verlängerung der Rückenlehne gelenkig mit dem Ende des einen Hebelarmes des Kniehebels verbunden ist, und daß das Ende des anderen Hebelarmes des Kniehebels mittels eines Mitnehmerbolzens oder dgl. des Rückenlehnenstabes und/oder des Sitzträgers so verschwenkbar ist, daß beim Rückwärtsneigen des Rückenlehnenstabes und/oder dem Absenken des Sitzträgers der eine Hebelarm des Kniehebels die Verlängerung und damit die Rückenlehne in Richtung zum Lagerbock oder Sitzträger verstellt.This object is achieved according to the invention in that the backrest is connected to a slide or the like, which is additionally adjustable in or on the slide or the like via a predetermined adjustment path and can be fixed in several positions, that the adjustment device has only a single toggle lever , which is mounted on a bearing bracket supporting the seat or on a seat bracket which can be changed in inclination about a horizontal pivot axis, such that an extension of the backrest is articulated to the end of one lever arm of the toggle lever, and that the end of the other lever arm of the toggle lever can be pivoted by means of a driving pin or the like of the backrest bar and / or the seat support in such a way that when the backrest bar is tilted back and / or the seat support is lowered one lever arm of the toggle lever adjusts the extension and thus the backrest in the direction of the pedestal or seat support.

Die Stelleinrichtung umfaßt nur einen einzigen Kniehebel, der die überproportionale Änderung der Neigung des Rückenlehnenstabes bei der Veränderung der Neigung des Sitzes übernimmt und gleichzeitig für eine Relativbewegung zwischen der Rückenlehne und dem Sitz sorgt, die den Auszieheffekt vermeidet.The actuating device comprises only a single toggle lever, which takes over the disproportionate change in the inclination of the backrest bar when changing the inclination of the seat and at the same time ensures a relative movement between the backrest and the seat, which avoids the pull-out effect.

Mit dem zusätzlichen, gegenüber dem Schieber oder dgl. verstellbaren Schlitten oder dgl. wird erreicht, daß ohne Beeinflussung des Verstellweges des Schiebers oder dgl., der über die Verstelleinrichtung selbsttätig ausgeführt wird, die Rückenlehne mit dem Schlitten oder dgl. über einen separaten Verstellweg in eine Grundeinstellung gebracht werden kann, die an die Körpergröße des Benutzers angepaßt ist. Die anatomische Ausbildung der Rückenlehne kommt damit für jeden Benutzer unabhängig von seiner Körpergröße voll zur Wirkung und dies mit einem relativ kleinen Mehraufwand.With the additional slide or the like, which is adjustable relative to the slide or the like, it is achieved that the backrest with the slide or the like can be influenced via a separate adjustment path without influencing the adjustment path of the slide or the like, which is carried out automatically via the adjustment device a basic setting can be brought that is adapted to the body size of the user. The anatomical design of the backrest therefore comes into full effect for every user regardless of their body size and with a relatively small additional effort.

Die Einstellung des Schlittens oder dgl. in mehrere, definierte Stellungen über seinen Verstellweg im oder am Schieber oder dgl. wird auf einfache Art dadurch erreicht, daß an dem Schlitten oder dgl. eine Feder mit Rastbolzen angebracht ist, der in eine von mehreren Bohrungen des Schiebers oder dgl. einrastbar ist, und daß mittels einer Taste, die im Rückenlehnenstab angeordnet ist, die Feder auslenkbar und damit die Rastverbindung zwischen dem Rastbolzen und dem Schieber oder dgl. aufhebbar ist.The setting of the carriage or the like. In several, defined positions via its adjustment path in or on the slide or the like. Is achieved in a simple manner in that a spring with locking bolts is attached to the carriage or the like, which in one of several bores of the Slider or the like. Can be snapped in, and that by means of a Button which is arranged in the backrest bar, the spring can be deflected and thus the latching connection between the latching pin and the slide or the like can be canceled.

Nach dem Loslassen der Taste stellt sich die Raststellung zwischen dem Rastbolzen und dem Schieber oder dgl. dann selbsttätig ein, wenn vorgesehen ist, daß sich die Taste mittels eines elastischen Elementes als Rückstellfeder am Schieber oder dgl. abstützt und mit Verlängerungen bis hinter die Feder in der höchsten Stellung der Rückenlehne und damit des Schlittens oder dgl. geführt ist.After releasing the button, the locking position between the locking pin and the slide or the like. Then sets itself automatically if it is provided that the button is supported on the slide or the like by means of an elastic element as a return spring and with extensions to behind the spring in the highest position of the backrest and thus the slide or the like.

Eine besonders vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, daß die Feder als U-förmige Blattfeder ausgebildet ist, die mit ihren Seitenschenkeln den Schlitten oder dgl. seitlich umschließt und sich mit ihrem Querschenkel auf der dem Sitz zugekehrten Seite des Schlittens oder dgl. auf der der Rückenlehne zugekehrten Seite des Schiebers oder dgl. abstützt, und daß die Taste auf der der Rückenlehne abgekehrten Seite des Rückenlehnenstabes außerhalb des Verstellweges der Rückenlehne angeordnet ist. Die Taste ist dann stets leicht zugänglich und die Feder mit dem Rastbolzen ist leicht in dem Rückenlehnenstab unterzubringen.A particularly advantageous embodiment is characterized in that the spring is designed as a U-shaped leaf spring which laterally surrounds the slide or the like with its side legs and with its transverse leg on the side of the slide or the like facing the seat or on the backrest facing side of the slider or the like. And that the button on the side facing away from the backrest of the backrest bar is arranged outside the adjustment path of the backrest. The button is then always easily accessible and the spring with the locking pin is easy to accommodate in the backrest bar.

Die Rastkraft wird symmetrisch und gleichförmig auf den Rastbolzen übertragen, wenn die Ausgestaltung so vorgenommen ist, daß der Rastbolzen am Querschenkel der Feder mittig angebracht ist und in Richtung zum Schieber oder dgl. an diesem absteht und daß die Reihe von Bohrungen im Schieber oder dgl. mittig in gleichmäßigen Abständen eingebracht sind.The locking force is transmitted symmetrically and uniformly to the locking pin if the configuration is such that the locking pin is attached centrally to the cross leg of the spring and protrudes toward the slide or the like. This and that the series of holes in the slide or the like. are introduced in the center at regular intervals.

Der Verstellweg des Schlittens oder dgl. im oder am Schieber oder dgl. wird durch Anschläge begrenzt, die vorzugsweise am Schieber oder dgl. angebracht sind.The adjustment path of the slide or the like in or on the slide or the like is limited by stops which are preferably attached to the slide or the like.

Das Einrasten des Rastbolzens in eine Bohrung des Schiebers oder dgl. wird dadurch verbessert, daß da: freie Ende des Rastbolzens in eine Einführspitze, einen Einführkegelstumpf oder dgl. ausläuft.The engagement of the locking pin in a bore of the slide or the like is improved in that there: the free end of the locking pin runs into an insertion tip, an insertion cone stump or the like.

Die Verstelleinrichtung für den Schieber oder dgl. ist vorzugsweise so ausgebildet, daß die Verstelleinrichtung nur einen einzigen Kniehebel aufweist, der an einem den Sitz tragenden Lagerbock oder an einem am Lagerbock in der Neigung veränderbaren Sitzträger um eine horizontale Schwenkachse schwenkbar gelagert ist, daß eine Verlängerung der Rückenlehne gelenkig mit dem Ende des einen Hebelarmes des Kniehebels verbunden ist, und daß das Ende des anderen Hebelarmes des Kniehebels mittels eines Mitnehmerbolzens oder dgl. des Rückenlehnenstabes und/oder des Sitzträgers so verschwenkbar ist, daß beim Rückwärtsneigen des Rückenlehnenstabes und/oder dem Absenken des Sitzträgers der eine Hebelarm des Kniehebels die Verlängerung und damit die Rückenlehne in Richtung zum Lagerbock oder Sitzträger verstellt.The adjusting device for the slide or the like is preferably designed so that the adjusting device has only a single toggle lever which is pivotally mounted on a bearing bracket or on the bracket of the bearing bracket in the inclination changeable about a horizontal pivot axis that an extension the backrest is connected in an articulated manner to the end of one lever arm of the toggle lever, and that the end of the other lever arm of the toggle lever can be pivoted by means of a driving pin or the like of the backrest bar and / or the seat support in such a way that when the backrest bar is tilted back and / or lowered of the seat support one lever arm of the toggle lever adjusts the extension and thus the backrest in the direction of the bearing block or seat support.

Die Erfindung wird anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels näher erläutert. Es zeigt:

  • Fig. 1 im Längsschnitt den Rückenlehnenstab mit einem Schieber und einem die (nicht dargestellte) Rückenlehne tragenden Schlitten sowie die Verstelleinrichtung zum Verstellen des Schiebers im Rückenlehnenstab und
  • Fig. 2 die Teilansicht der Teile nach Fig. 1 auf die der Rückenlehne zugekehrte Seite.
The invention is explained in more detail using an exemplary embodiment shown in the drawings. It shows:
  • Fig. 1 in longitudinal section the backrest bar with a slider and a carriage (not shown) carrying the backrest and the adjusting device for adjusting the slider in the backrest bar and
  • Fig. 2 is a partial view of the parts of FIG. 1 on the side facing the backrest.

Das Ausführungsbeispiel nach den Fig. 1 und 2 zeigt einen Stuhl, bei dem der Rückenlehnenstab 6 an dem Lagerbock 2 oder dem Sitzträger 33 schwenkbar gelagert sein kann. Die Darstellung ist dabei nur auf die Teile beschränkt, die für die Einstellung der Rückenlehne in eine Grundeinstellung und die selbsttätige Verstellung der Rückenlehne im oder am Rückenlehnenstab erforderlich sind. Fig. 1 läßt eine Verstelleinrichtung mit dem Kniehebel 20 erkennen, der sowohl an dem feststehenden Lagerbock 2 eines Stuhles, als auch an dem in der Neigung gegenüber dem Lagerbock 2 veränderbaren Sitzträger 33 schwenkbar gelagert sein kann.The embodiment of FIGS. 1 and 2 shows a chair in which the backrest bar 6 can be pivotally mounted on the bearing block 2 or the seat support 33. The representation is only limited to the parts that are required for the adjustment of the backrest in a basic setting and the automatic adjustment of the backrest in or on the backrest bar. Fig. 1 shows an adjustment device with the toggle lever 20, which can be pivotally mounted both on the fixed bearing block 2 of a chair and on the seat support 33 which can be changed in inclination relative to the bearing block 2.

In dem Rückenlehnenstab 6 ist der Schieber 5 verstellbar geführt, wobei Dämpfungselemente 7 Verstellgeräusche verhindern bzw. dämpfen. Auf dem Schieber 5 ist der Schlitten 10 verstellbar geführt. Der Schlitten 10 trägt den horizontal gerichteten Rohrabschnitt 9, an dem die nicht dargestellte Rückenlehne 35 befestigt wird. Zwischen dem Schieber 5 und dem Schlitten 10 ist die als U-förmige Blattfeder ausgebildete Feder 8 angeordnet, die mit ihren Seitenschenkeln den Schlitten 10 seitlich umschließt und sich mit ihrem Querschenkel unterhalb des Schlittens 10 auf der der Rückenlehne 35 zugekehrten Seite des Schiebers 5 abstützt. Der Schieber 5 trägt in der Mitte eine Reihe von Bohrungen 37, die in gleichmäßigen Abständen eingebracht sind. Der Querschenkel der Feder 8 trägt mittig den Rastbolzen 11, der in Richtung zum Schieber 5 an diesem absteht und am freien Ende vorzugsweise in eine Einführspitze, einen Einführkegelstumpf oder dgl. ausläuft, damit er leichter in eine Bohrung 37 des Schiebers 5 einrasten kann.In the backrest rod 6, the slider 5 is guided in an adjustable manner, damping elements 7 preventing or damping adjustment noises. The slide 10 is guided on the slide 5 in an adjustable manner. The carriage 10 carries the horizontally directed tube section 9 to which the backrest 35, not shown, is attached. Arranged between the slide 5 and the slide 10 is the spring 8 designed as a U-shaped leaf spring, which laterally encloses the slide 10 with its side legs and is supported with its transverse leg below the slide 10 on the side of the slide 5 facing the backrest 35. The slider 5 carries in the middle a series of holes 37 which are made at regular intervals. The cross leg of the spring 8 carries in the middle the locking bolt 11, which protrudes in the direction of the slider 5 thereon and preferably runs out at the free end into an insertion tip, an insertion truncated cone or the like, so that it can more easily engage in a bore 37 of the slider 5.

Auf der der Rückenlehne 35 abgekehrten Seite ist in den Rückenlehnenstab 6 die Taste 12 eingebaut und zwar außerhalb des Versteilbereiches der Rückenlehne, die den Rückenlehnenstab 6 umschließen und in einer Aufnahme aufnehmen kann. Die Taste 12 ist mit zwei Verlängerungen seitlich des Schiebers 5 hochgeführt und hintergreift die Feder 8 auch dann noch, wenn der Schlitten 10 auf dem Schieber 5 seine höchste Stellung einnimmt. Durch Druck auf die Taste 12 kann daher über die Verlängerungen die Feder 8 ausgelenkt und die Rastverbindung zwischen dem Rastbolzen 11 und dem Schieber 5 aufgehoben werden. Der schlitten 10 mit der Rückenlehne ist dann auf dem Schieber 5 verstellbar, bis der Rastbolzen 11 nach dem Loslassen der Taste 12 wieder in eine Bohrung 37 des Schiebers 5 einrastet. Der Verstellweg des Schlittens 10 auf dem Schieber 5 ist auf einen vorgegebenen Wert begrenzt und zwar durch Anschläge des Schiebers 5, die z.B. als in Bohrungen eingesetzte Stifte ausgebildet sein können. Durch Anschlag des Schlitters 10 an diesen Stiften wird der Verstellweg des Schlittens 10 auf dem Schieber 5 festgelegt. Diese zusätzliche Verstellbarkeit der Rückenlehne an dem Schieber 5, der selbst im oder am Rückenlehnenstab 6 beim Rückwärtsneigen des Rückenlehnenstabes 6 selbsttätig verstellt wird, erlaubt eine Grundeinstellung der Rückenlehne bei steil aufgerichtetem Rückenlehnenstab 6 und damit eine Anpassung der anatomisch gestalteten Rückenlehne an die Körpergröße des Benutzers, um den optimalen, an die Körpergröße des Benutzers angepaßten Sitzkomfort in allen Stellungen des Rückenlehnenstabes 6 zu erhalten.On the side facing away from the backrest 35, the button 12 is installed in the backrest bar 6, specifically outside the adjustment range of the backrest, which is the Enclose backrest bar 6 and can accommodate in one shot. The key 12 is raised with two extensions to the side of the slide 5 and engages behind the spring 8 even when the slide 10 is in its highest position on the slide 5. By pressing the button 12, the spring 8 can therefore be deflected via the extensions and the locking connection between the locking pin 11 and the slider 5 can be canceled. The slide 10 with the backrest is then adjustable on the slide 5 until the locking pin 11 engages again in a bore 37 of the slide 5 after the button 12 is released. The adjustment path of the slide 10 on the slide 5 is limited to a predetermined value, specifically by stops of the slide 5, which can be designed, for example, as pins inserted into bores. By stopping the slider 10 on these pins, the adjustment path of the sled 10 on the slide 5 is fixed. This additional adjustability of the backrest on the slider 5, which is automatically adjusted even in or on the backrest bar 6 when the backrest bar 6 is tilted backward, permits a basic adjustment of the backrest when the backrest bar 6 is erected steeply and thus an adaptation of the anatomically designed backrest to the body size of the user, in order to obtain the optimal seating comfort adapted to the body size of the user in all positions of the backrest bar 6.

Die Taste 12 stützt sich mittels des elastischen Elementes 21, das z.B. als ein mittels Klebefolie 18 abgedeckter Schaumstoffblock ausgebildet sein kann, an dem Schieber 5 ab. Dieses elastische Element 21 wirkt als Rückstellfeder, die die Taste 12 nach dem Loslassen zurückstellt. Dabei wird die Feder 8 für das Einrasten des Rastbolzens 11 in eine Bohrung 37 des Schiebers 5 freigegeben.The button 12 is supported on the slide 5 by means of the elastic element 21, which can be designed, for example, as a foam block covered by adhesive film 18. This elastic element 21 acts as a return spring, which resets the key 12 after release. The spring 8 is released for engaging the locking pin 11 in a bore 37 of the slide 5.

Die Verstelleinrichtung für den Schieber 5 ist im Ausführungsbeispiel als Kniehebel 20 ausgebildet, der mit der als Lagerbolzen ausgebildeten Schwenkachse 19 an dem ortsfesten Lagerbock 2 oder einem am Lagerbock 2 schwenkbar gelagerten und in der Neigung veränderbaren Sitzträger 33 verdrehbar gelagert ist. Der Lagerbolzen ist dabei in den Seitenschenkeln des im Querschnitt U-förmigen Lagerbockes 2 oder Sitzträgers 33 gelagert. Der Durchbruch 32 gibt dabei Platz für den Kniehebel 20, so daß die Bauhöhe klein gehalten werden kann. Auch der Rückenlehnenstab 6 ist mit Seitenschenkeln versehen und zur Rückenlehne hin offen. Der Lagerbock 2 oder der Sitzträger 33 ragt zwischen die Seitenschenkel des Rückenlehnenstabes 6 und ist mit der als Lagerbolzen ausgebildeten Schwenkachse 16 darin drehbar gelagert. Der Lagerbock 2 oder der Sitzträger 33 weist im Lagerbereich die Ausnehmung 31 auf, durch die die Verlängerung 17 eingeführt und mittels der Lagerhülse 24 auf dem Gelenkbolzen 22 gelenkig gelagert ist. Der Gelenkbolzen 22 ist am Ende des einen Hebelarmes 28 des Kniehebels 20 angeordnet, der in der Ausgangsstellung des Stuhles, d.h. bei steil aufgerichtetem Rückenlehnenstab 6, wie der Lagerbock 2 oder der Sitzträger 33 etwa horizontal verläuft. In dem über die Schwenkachse 16 hinaus verlängerten Bereich des Rückenlehnenstabes 6 ist der Mitnehmerbolzen 25 festgelegt, der von dem Gleitstein 26 aufgenommen wird. Der Gleitstein 26 ist in dem Führungsschlitz 27 des anderen Hebelarmes 29 des Kniehebels 20 verstellbar geführt. Der Gelenkbolzen 22 beschreibt beim Verschwenken des Kniehebels 20 eine Bewegungsbahn 30, die auf einer Kreisbahn um die Schwenkachse 19 des Kniehebels 20 liegt. Die Abstimmung der Schwenkbewegung des Rückenlehnenstabes 6 ist nun so, daß die Lagerhülse 24 der Verlängerung 17 eine Bewegungsbahn beschreibt, die mit der Bewegungsbahn 30 des Gelenkbolzens 22 zusammenfällt und identisch ist. Dann ist erreicht, daß die Verlängerung 17 starr mit dem Schieber 5 verbunden werden oder einstückig mit diesem ausgebildet sein kann. Durch die Auslegung der Hebelarme 28 und 29 des Kniehebels 20 und die Abstände des Gelenkbolzens 22 und des Mitnehmerbolzens 25 von der Schwenkachse 19 des Kniehebels 20 kann eine entsprechende Abstimmung vorgenommen werden. Auch der Abstand der Schwenkachsen 16 und 19 am Lagerbock 2 oder am Sitzträger 33 ist ein Parameter, der zur Festlegung des Verstellweges des Schiebers 5 herangezogen werden kann.The adjusting device for the slide 5 is designed in the exemplary embodiment as a toggle lever 20 which is rotatably mounted with the pivot axis 19 embodied as a bearing pin on the fixed bearing block 2 or on a pivotable on the bearing block 2 and the inclination of the seat support 33. The bearing pin is mounted in the side legs of the bearing block 2 or seat bracket 33 which is U-shaped in cross section. The opening 32 provides space for the toggle lever 20 so that the overall height can be kept small. The backrest bar 6 is also provided with side legs and is open towards the backrest. The bearing block 2 or the seat support 33 protrudes between the side legs of the backrest bar 6 and is rotatably mounted therein with the pivot axis 16 designed as a bearing pin. The bearing block 2 or the seat support 33 has in the bearing area the recess 31 through which the extension 17 is inserted and is articulated on the hinge pin 22 by means of the bearing sleeve 24. The hinge pin 22 is arranged at the end of a lever arm 28 of the toggle lever 20 which, in the initial position of the chair, ie with the backrest bar 6 erected steeply, such as the bearing block 2 or the seat support 33, runs approximately horizontally. In the area of the backrest bar 6 that is extended beyond the pivot axis 16, the driving pin 25 is fixed, which is received by the sliding block 26. The sliding block 26 is adjustably guided in the guide slot 27 of the other lever arm 29 of the toggle lever 20. When the toggle lever 20 is pivoted, the pivot pin 22 describes a movement path 30 which lies on a circular path about the pivot axis 19 of the toggle lever 20. The coordination of the pivoting movement of the backrest rod 6 is now such that the bearing sleeve 24 of the extension 17 describes a movement path which coincides with the movement path 30 of the hinge pin 22 and is identical. Then that extension is achieved 17 can be rigidly connected to the slide 5 or can be integrally formed therewith. By designing the lever arms 28 and 29 of the toggle lever 20 and the distances of the hinge pin 22 and the driving pin 25 from the pivot axis 19 of the toggle lever 20, a corresponding adjustment can be made. The distance between the pivot axes 16 and 19 on the bearing block 2 or on the seat support 33 is also a parameter which can be used to determine the adjustment path of the slide 5.

Im Ausführungsbeispiel ist die Verlängerung 17 ein getrenntes Teil, das mittels der Verbindungslasche 23, der Schraube 15 und dem Federring 14 fest mit dem Schieber 5 verbunden ist. Der Mitnehmerbolzen 25 des Rückenlehnenstabes 6 beschreibt beim Verschwenken die Bewegungsbahn 36, die auf einer Kreisbahn um die Schwenkachse 16 liegt. Beim Verschwenken des Rückenlehnenstabes 6 entgegen dem Uhrzeigersinn, wird, wie Fig. 1 zu entnehmen ist, von dem Mitnehmerbolzen 25 der andere Hebelarm 29 des Kniehebels 20 im gleichen Drehsinn mit verschwenkt. Dabei ändert sich der Abstand des Mitnehmerbolzens 25 von der Schwenkachse 19 des Kniehebels 20. Aus diesem Grunde ist der vom Gleitstein 26 aufgenommene Mitnehmerbolzen 25 in dem Führungsschlitz 27 des anderen Hebelarmes 29 des Kniehebels 20 längsverstellbar geführt, um seine Schwenkbewegung auf der Bewegungsbahn 36 ungehindert ausführen zu können.In the exemplary embodiment, the extension 17 is a separate part which is firmly connected to the slide 5 by means of the connecting lug 23, the screw 15 and the spring ring 14. The driver pin 25 of the backrest rod 6 describes the movement path 36 when pivoting, which lies on a circular path around the pivot axis 16. When pivoting the backrest bar 6 counterclockwise, as can be seen in FIG. 1, the other lever arm 29 of the toggle lever 20 is pivoted in the same direction by the driving pin 25. The distance of the driving pin 25 from the pivot axis 19 of the toggle lever 20 changes. For this reason, the driving pin 25 received by the sliding block 26 is guided in a longitudinally adjustable manner in the guide slot 27 of the other lever arm 29 of the toggle lever 20 in order to carry out its pivoting movement on the movement path 36 unhindered to be able to.

Ist der Kniehebel 20 an dem Sitzträger 33 schwenkbar gelagert, dann ist der Mitnehmerbolzen 25 zusätzlich in Führungsschlitzern des ortsfesten Lagerbockes 2 verstellbar geführt.If the toggle lever 20 is pivotally mounted on the seat support 33, then the driving pin 25 is additionally adjustably guided in the guide slots of the fixed bearing block 2.

Die Abdeckung 13 deckt außerhalb des Verstellbereiches des Schlittens 10 einen Teil der offenen Seite des Rückenlehnenstabes 6 ab.The cover 13 covers a part of the open side of the backrest bar 6 outside the adjustment range of the slide 10.

Claims (7)

1. Chair, in particular a work or office chair, having a back-rest rod, whose inclination to the seat can be varied, and a back-rest, which can be adjusted on said rod by means of a slider or the like, the slider or the like being slidable in or on the back-rest rod in the direction of the seat by means of an adjustment device when the back-rest rod tilts backwards,
characterised in that
the back-rest is connected to a carriage (10) or the like, which is additionally adjustable over a predetermined adjusting distance in or on the slider (5) or the like and can be fixed in several positions, in that the adjustment device includes only one single toggle lever (20) mounted on a bearing block (2), which supports the seat, or on a seat support (33), whose inclination can be varied at the bearing block (2), so as to be pivotable about a horizontal pivotal axle (19),
in that an extension member (17) of the back-rest (35) is pivotally connected to the end of one lever arm (28) of the toggle lever (20), and
in that the end of the other lever arm (29) of the toggle lever (20) is pivotable, by means of an engaging bolt (25) or the like of the back-rest rod (6) and/or of the seat support (33), in such a manner that, when the back-rest rod (6) tilts backwards and/or the seat support is lowered, one lever arm (28) of the toggle lever (20) adjusts the extension member (17), and hence the back-rest (35), in a direction towards the bearing block (2) or seat support (33).
2. Chair according to claim 1,
characterised in that
a spring (8) is mounted on the carriage (10) or the like by means of locking bolt (11), which can be locked into one of a plurality of bores (37) in the slider (5) or the like, and
in that the spring (8) is deflectable by means of a push button (12), which is disposed in the back-rest rod (6), and hence the locking connection between the locking bolt (11) and the slider (5) or the like can be released.
3. Chair according to claim 1 or 2,
characterised in that
the push button (12) is supported on the slider (5) or the like by means of a resilient element (21), in the form of a return spring, and extends, by means of extension members, to behind the spring (8) when the back-rest, and hence the carriage (10) or the like, are in their highest position.
4. Chair according to one of claims 1 to 3,
characterised in that
the spring (8) is a U-shaped plate spring, which laterally surrounds the carriage (10) or the like by means of its lateral walls and is supported by its transverse wall on the side of the carriage (10) or the like facing the seat, on the side of the slider (5) or the like facing the back-rest, and
in that the push button (12) is disposed on the side of the back-rest rod (6) remote from the back-rest externally of the adjusting distance of the back-rest.
5. Chair according to one of claims 1 to 4,
characterised in that
the locking bolt (11) is mounted centrally on the transverse wall of the spring (8) and protrudes from the slider (5) or the like in the direction thereof, and
in that the row of bores (37) in the slider (5) or the like is provided centrally with uniform spacings between the bores.
6. Chair according to one of claims 1 to 5,
characterised in that
the adjusting distance of the carriage (10) or the like in or on the slider (5) or the like is defined by means of stop members, in particular of the slider (5) or the like.
7. Chair according to one of claims 1 to 6,
characterised in that
the free end of the locking bolt (11) tapers-off into an insert point, a frustoconical insert or the like.
EP88909998A 1987-12-29 1988-12-03 Chair, in particular work or office chair Expired - Lifetime EP0397661B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88909998T ATE77217T1 (en) 1987-12-29 1988-12-03 CHAIR, ESPECIALLY WORK OR OFFICE CHAIR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873744363 DE3744363A1 (en) 1987-12-29 1987-12-29 CHAIR, ESPECIALLY WORK OR OFFICE CHAIR
DE3744363 1987-12-29

Publications (2)

Publication Number Publication Date
EP0397661A1 EP0397661A1 (en) 1990-11-22
EP0397661B1 true EP0397661B1 (en) 1992-06-17

Family

ID=6343761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88909998A Expired - Lifetime EP0397661B1 (en) 1987-12-29 1988-12-03 Chair, in particular work or office chair

Country Status (7)

Country Link
US (1) US5100200A (en)
EP (1) EP0397661B1 (en)
JP (1) JPH03502170A (en)
AT (1) ATE77217T1 (en)
CA (1) CA1332146C (en)
DE (2) DE3744363A1 (en)
WO (1) WO1989006099A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3744365C3 (en) * 1987-12-29 1994-04-14 Roeder Gmbh Chair, in particular work or office chair
DE3838999A1 (en) * 1988-11-18 1990-05-23 Roeder Gmbh CHAIR, ESPECIALLY WORK OR OFFICE CHAIR
US5613734A (en) * 1996-02-08 1997-03-25 Bassett Furniture Ind. Inc. Chair with vertically adjustable back
US5707108A (en) * 1996-12-04 1998-01-13 Pi; Ching-Tien Cushioning device
US6007150A (en) 1998-03-08 1999-12-28 Milsco Manufacturing Company Motorcycle seat with adjustable backrest
US6616232B2 (en) * 2001-06-12 2003-09-09 Hms Seating Inc. Tiltable spring-biased chair
MY134768A (en) * 2002-01-17 2007-12-31 Green Continental Furniture M Sdn Bhd A dining chair with reclining mechanism
DE602004004359T2 (en) * 2004-01-26 2007-08-23 Pro-Cord S.P.A. Chair with tilting backrest
US7237841B2 (en) * 2004-06-10 2007-07-03 Steelcase Development Corporation Back construction with flexible lumbar
US7458637B2 (en) * 2004-06-10 2008-12-02 Steelcase Inc. Back construction with flexible lumbar
US7396079B2 (en) * 2005-03-08 2008-07-08 Steelcase Inc. Seating with shape-changing back support frame
EP3217844A1 (en) * 2014-11-13 2017-09-20 L&P Property Management Company Tilt mechanism for a weight-responsive seating furniture
US9596941B1 (en) * 2016-02-02 2017-03-21 Office Master Inc. Chair back with height and lumbar adjustment
US9848707B1 (en) * 2016-07-28 2017-12-26 Ergo-Industrial Seating Systems, Inc. Telescoping mechanism
EP3508095B1 (en) * 2016-09-01 2021-02-24 UE Furniture Co., Ltd Chair structure and chair
USD904099S1 (en) * 2018-06-22 2020-12-08 P.S. Pibbs, Inc. Reclining mechanism for a threading chair

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992855A (en) * 1959-06-01 1961-07-18 Harvey H Mohler Chair with adjustable back
DE8025516U1 (en) * 1980-09-24 1981-01-15 Zapf, Otto, 6240 Koenigstein SEAT FURNITURE
DE3038880C2 (en) * 1980-10-15 1985-05-02 Martin Stoll GmbH, 7890 Waldshut-Tiengen Device for the gradual adjustment of the distance between two chair parts
BR8109037A (en) * 1981-08-19 1983-09-06 Giroflex Entwicklungs Ag CHAIR
US4536031A (en) * 1983-06-10 1985-08-20 Knoll International, Inc. Back support control mechanism for a chair or the like
CH666171A5 (en) * 1984-10-03 1988-07-15 Giroflex Entwicklungs Ag CHAIR WITH REAR TILTABLE SEAT AND BACKREST CARRIER.
IT1183571B (en) * 1985-05-08 1987-10-22 Fantoni Arredamenti Spa STRUCTURE OF ARMCHAIR AND / OR ANATOMICAL CHAIR IN MULTIPLE POSITIONS
US4616877A (en) * 1985-05-09 1986-10-14 Kimball International, Inc. Chair with back height adjustment
US4632458A (en) * 1985-05-20 1986-12-30 Fixtures Manufacturing Corporation Chair back height adjustment mechanism
DE3635244A1 (en) * 1986-10-16 1988-04-28 Dauphin F W Buerositzmoebel CHAIR, ESPECIALLY OFFICE CHAIR, WITH HEIGHT-ADJUSTABLE BACKREST

Also Published As

Publication number Publication date
DE3744363A1 (en) 1989-07-13
CA1332146C (en) 1994-09-27
ATE77217T1 (en) 1992-07-15
WO1989006099A1 (en) 1989-07-13
DE3744363C2 (en) 1990-05-17
US5100200A (en) 1992-03-31
DE3872258D1 (en) 1992-07-23
JPH03502170A (en) 1991-05-23
EP0397661A1 (en) 1990-11-22

Similar Documents

Publication Publication Date Title
EP0394307B1 (en) Chair, in particular work or office chair
EP0397661B1 (en) Chair, in particular work or office chair
EP1946676B1 (en) Chair
DE3235361C2 (en)
DE10026292C2 (en) chair
DE3930983A1 (en) SEAT FURNITURE WITH TILT ADJUSTABLE SEAT
DE19930922A1 (en) Hinged backrest for chair has cushion resting on flexible plate fastened to tubular support frame with straps
EP1301106A1 (en) Chair
DE8560028U1 (en) Chair, especially office chair.
DE3322450A1 (en) Device for adjusting the seat and the backrest of chairs
EP0198056B1 (en) Seat support for chairs, especially for rotating work-chairs
DE8511034U1 (en) Seating furniture in the form of a chair or armchair, in particular for office purposes
DE10241285A1 (en) Reclining chair has back and seat connected by triangular plates, lower corner of each plate forming pivot connecting rear edge of seat to lever mounted on chair frame while other lower corner moves along slide
DE4317610C2 (en) Height-adjustable armrest for a chair
EP2070443A1 (en) Horizontally adjustable armrest
DE102007021782B3 (en) Synchronous mechanism for office chairs
EP0590113B1 (en) Office chair
DE69113685T2 (en) Folding chair with continuously self-adjusting inclination movement.
EP0870443A2 (en) Chair, particularly office-chair
DE19620260A1 (en) Seat with support, connection, sitting part, backrest, control and bottom frame
DE10220841B4 (en) Chair with backrest that is adjustable relative to the seat part to adjust the seat depth
CH652287A5 (en) Work chair with adjustable seat surface and backrest
CH663526A5 (en) Chair
DE3501910C2 (en) Seat supports for chairs, in particular work swivel chairs
DE19932558C2 (en) Chair, in particular office swivel chair

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19891028

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17Q First examination report despatched

Effective date: 19911205

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19920617

REF Corresponds to:

Ref document number: 77217

Country of ref document: AT

Date of ref document: 19920715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3872258

Country of ref document: DE

Date of ref document: 19920723

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19921203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19921231

Ref country code: LI

Effective date: 19921231

Ref country code: CH

Effective date: 19921231

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20000204

Year of fee payment: 12

NLS Nl: assignments of ep-patents

Owner name: HAWORTH BUROEINRICHTUNGEN GMBH

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20000927

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20001209

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001231

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20001231

Year of fee payment: 13

BERE Be: lapsed

Owner name: ROEDER G.M.B.H.

Effective date: 20001231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011203

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20011224

Year of fee payment: 14

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020702

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20011203

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20020701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030901

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051203