EP0614631A1 - Height adjustable chair - Google Patents

Height adjustable chair Download PDF

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Publication number
EP0614631A1
EP0614631A1 EP94101690A EP94101690A EP0614631A1 EP 0614631 A1 EP0614631 A1 EP 0614631A1 EP 94101690 A EP94101690 A EP 94101690A EP 94101690 A EP94101690 A EP 94101690A EP 0614631 A1 EP0614631 A1 EP 0614631A1
Authority
EP
European Patent Office
Prior art keywords
seat
backrest
guide
chair
adjustment
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.)
Withdrawn
Application number
EP94101690A
Other languages
German (de)
French (fr)
Inventor
Thomas Müller
Reinhard W. Weber
Heinz-Peter Suhr
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.)
VS Vereinigte Spezialmobelfabriken GmbH and Co KG
Original Assignee
VS Vereinigte Spezialmobelfabriken GmbH and Co KG
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 VS Vereinigte Spezialmobelfabriken GmbH and Co KG filed Critical VS Vereinigte Spezialmobelfabriken GmbH and Co KG
Publication of EP0614631A1 publication Critical patent/EP0614631A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/023—Reclining or easy chairs having independently-adjustable supporting parts the parts being horizontally-adjustable seats ; Expandable seats or the like, e.g. seats with horizontally adjustable parts
    • 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
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • 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
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/32—Chairs or stools with vertically-adjustable seats with flexible height-adjusting means, e.g. rope, chain
    • 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
    • A47C7/402—Support for the head or the back for the back adjustable in height

Definitions

  • the object of the invention is to provide simple, easy to integrate into a chair and reliable adjustment means for the coupling between seat height and backrest adjustment.
  • the flexible transmission element can be easily integrated into a seat support and, due to its flexibility, allows any angle to be provided between a backrest support guide and the mostly vertical adjustment direction of the seat.
  • the incline of this guide allows the backrest to be adjusted so that the ideal relationship between seat height, seat depth and backrest height is maintained under all conditions.
  • the flexible transmission element transmitting and pushing can be a flexible band, such as a steel or plastic band, which runs in a guide and can be deflected there several times. It can run upwards from a fitting attached to the foot of the chair, e.g. a rotating fitting, under the seat in the direction of the backrest and then be deflected back again, so that it finally runs from the outside parallel to the backrest support and this when retracting pushes while the backrest is pulled when the backrest is extended.
  • the backrest is therefore fixed in all positions in all directions and is positively guided during the adjustment without the need for expensive bearings and gears.
  • the tape can easily be enclosed in a molded groove during assembly.
  • a wide variety of other transmission and pressure-transmitting transmission elements can also be used.
  • a transmission mechanism with a flexible organ such as a steel band, is created, which, deflected accordingly, in the direction of pull and push in one oblique guide acts on the running backrest.
  • the transmission element is attached to the foot on the one hand, while its deflection is attached to a seat support. A stepless adjustment of the backrest position is thereby achieved when adjusting the seat height.
  • the chair 11 shown in Figures 1 to 3 is a school chair with a foot 12 which is supported by runners, not shown, and has a central column 13 which is provided with a gas spring or is formed by this. It contains a vertically displaceable rod 14 which can be released or fixed relative to the column 13 by an adjusting mechanism, not shown.
  • the rod 14 is attached to a seat support 15 which, as shown in FIG. 3, can be a plastic part consisting of two halves, on the upper flange 16 of which a seat 17 designed as a molded shell is fastened.
  • the seat support 15 receives the rod 14 in a pin 18 and contains, in addition to a vertical cover wall 19, a backrest support section 20.
  • a backrest support guide 21 in the form of a straight channel of rectangular cross section is formed in it, in which a backrest support 22 can be displaced is led.
  • the backrest support then has, at its straight section running in the guide 21, an angled section 23 which carries a backrest 24 at its upper end.
  • the backrest support guide 21 extends obliquely outwards and upwards from the vertical center axis 25 of the chair, so that, as can be seen from a comparison of FIGS. 1 and 2, the backrest in its most distant position from the axis 25 is also arranged higher above the seat is (Fig. 1) than in its position closer to the axis 25 (Fig. 2).
  • the guide 26 for a flexible transmission element 27 designed as a flexible steel band.
  • the guide 26 is formed by two mutually facing grooves in the two half-shells of the seat support 15. The guide 26 essentially runs close to the column vertically upwards, then approximately horizontally in the direction of the backrest, in order to finally run with an appropriately large arch toward the backrest support guide 21 and parallel to it.
  • the other end of the flexible transmission member 27 is attached to a ring 30 which is rotatable about the column 13 and is axially fixed there between guides, for example rollers 31 attached to the column 13, but is rotatable in the circumferential direction.
  • This type of attachment is intended for swivel chairs. In the case of a chair that is not rotatable but height-adjustable, the transmission member 27 could be attached directly to the column 13.
  • the guide 26 for the transmission member 27 thus runs in a P-shaped, almost closed arc around 180 ° (and below 270 °).
  • any known auxiliary means can be provided in the guides 21, 26, such as rollers, sliding coatings, plastic guide bushes or the like.
  • Fig. 1 the chair is in its highest position.
  • the flexible transmission member 27 has pulled the backrest support 22 shortly before the outer end of the guide 21, so that the backrest is in its most distant from the central axis 25 and the highest position.
  • the connecting piece 29 between the transmission member 27 and the backrest support 22 lies near the inlet 32 of the guide 26 into the guide 22.
  • the ring 30, which can be axially movable on the seat support 15 but can be fixed in the direction of rotation, runs with the seat support between the rollers 31 around the column 13 and thus does not impair the backrest adjustment.
  • the rod 15 penetrates further into the column 13. Since the ring 30 is axially fixed to the column, it pushes the flexible transmission member 27 in the guide 26 upwards. This movement is transmitted via the guide and pushes the backrest support 22 downwards and towards the center in its guide 21, so that the backrest moves downwards and towards the central axis 25. This happens because the backrest adjustment mechanism is attached to the seat support 15, relative to the seat, so that, as seen from the ground, the backrest 24 lowers further than the seat 17. The chair then has a reduced seat height, seat depth and backrest height above the seat.
  • the transmission member 27 When adjusting in the opposite direction, the transmission member 27 then pulls the backrest support 22 outward and upward again in its guide 21.
  • the transmission member 27 thus acts in the pushing and pulling directions and thus creates a secure fixing of the backrest in any position.
  • two parallel transmission elements could also be used.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)

Abstract

In order to vary the position of the back in terms of its height above the seat and the limitation of the seat depth caused by this during a seat height adjustment, a transmission mechanism with a flexible, tension- and pressure-transmitting member, such as a steel band (27), is provided, said steel band, appropriately deflected, acting in the tension and pressure direction on a back support (22) running in an inclined guide (21). The transmission member (27) is fixed, on one side, to the base, while its deflected portion is attached to a seat carrier (15). As a result, a continuous adjustment of the back position during adjustment of the seat height is achieved. <IMAGE>

Description

Insbesondere bei Schulstühlen, auf denen Personen unterschiedlichster Größe länger sitzen sollen, ist aus orthopädischen Gründen nicht nur eine Höhenverstellung der Sitzfläche notwendig, sondern auch eine entsprechende Anpassung der Lehnenposition zur Sitzfläche in Bezug auf Höhe und Sitztiefe.In the case of school chairs in particular, on which people of various sizes should sit longer, not only is it necessary to adjust the height of the seat, for orthopedic reasons, but also to adjust the backrest position to the seat in relation to height and depth.

Eine Lösung dieses Problems ist in der DE-PS 1 239 451 beschrieben. Dort wird bei einem durch Drehung des Sitzes über eine Spindel verstellbarem Stuhl die Lehnenverstellung über ein Getriebe mit mehreren Doppelhebeln bewirkt.A solution to this problem is described in DE-PS 1 239 451. There, in the case of a chair which can be adjusted by rotating the seat by means of a spindle, the backrest adjustment is effected by means of a gear with several double levers.

Eine weitere bekannte Lösung geht aus der CH-PS 514 316 hervor. Dort wird ein Zahnstangen/Zahnrad-Getriebe für die Ableitung der Lehnen- von der Sitzverstellung gezeigt. Ferner ist eine Ausführung mit einem über eine Umlenkrolle laufenden Seil gezeigt, das die von einer Druckfeder nach oben gedrückte Lehne bei einer Sitzverstellung mit nach unten zieht.Another known solution emerges from CH-PS 514 316. There a rack and pinion gear is shown for the derivation of the backrest from the seat adjustment. Furthermore, a version with a running over a deflection roller Rope shown, which pulls the backrest, which is pushed up by a compression spring, with a seat adjustment.

Aufgabe der Erfindung ist es, einfache, in einen Stuhl leicht zu integrierende und zuverlässige Verstellmittel für die Kopplung zwischen Sitzhöhen- und Lehnen-Verstellung zu schaffen.The object of the invention is to provide simple, easy to integrate into a chair and reliable adjustment means for the coupling between seat height and backrest adjustment.

Diese Aufgabe wird durch den Anspruch 1 gelöst. Das flexible Übertragungsorgan läßt sich leicht in einen Sitzträger integrieren und ermöglicht es aufgrund seiner Flexibilität, beliebige Winkel zwischen einer Lehnenstützenführung und der meist vertikalen Verstellrichtung des Sitzes vorzusehen. Durch die Schräge dieser Führung kann die Lehne so verstellt werden, daß das ideale Verhältnis zwischen Sitzhöhe, Sitztiefe und Lehnenhöhe unter allen Bedingungen eingehalten wird.This object is solved by claim 1. The flexible transmission element can be easily integrated into a seat support and, due to its flexibility, allows any angle to be provided between a backrest support guide and the mostly vertical adjustment direction of the seat. The incline of this guide allows the backrest to be adjusted so that the ideal relationship between seat height, seat depth and backrest height is maintained under all conditions.

Das zug- und schubübertragende flexible Übertragungsorgan kann ein flexibles Band, wie ein Stahl- oder Kunststoffband, sein, das in einer Führung verläuft und dort mehrfach umgelenkt sein kann. Es kann dabei von einem am Fuß des Stuhles angebrachten Beschlag, z.B. einem Drehbeschlag, aufwärts, unter dem Sitz entlang in Richtung auf die Lehne verlaufen und dann wieder zurück umgelenkt sein, so daß es schließlich von außen her parallel zur Lehnenstütze verläuft und diese beim Einziehen schiebt, während die Lehnenstütze beim Ausfahren der Lehne gezogen wird. Die Lehne ist also in jeder Lage nach allen Richtungen hin fest und wird bei der Verstellung zwangsführt, ohne daß aufwendige Lagerungen und Getriebe erforderlich sind. Das Band kann einfach in eine eingeformte Nut bei der Montage eingeschlossen werden. Es können aber auch verschiedenartigste andere zug- und druckübertragende Übertragungsorgane verwendet werden.The flexible transmission element transmitting and pushing can be a flexible band, such as a steel or plastic band, which runs in a guide and can be deflected there several times. It can run upwards from a fitting attached to the foot of the chair, e.g. a rotating fitting, under the seat in the direction of the backrest and then be deflected back again, so that it finally runs from the outside parallel to the backrest support and this when retracting pushes while the backrest is pulled when the backrest is extended. The backrest is therefore fixed in all positions in all directions and is positively guided during the adjustment without the need for expensive bearings and gears. The tape can easily be enclosed in a molded groove during assembly. However, a wide variety of other transmission and pressure-transmitting transmission elements can also be used.

Zur Anpassung der Lehnenstellung in ihrer Höhe über dem Sitz und der durch sie bewirkten Begrenzung der Sitztiefe bei einer Sitzhöhenverstellung wird also ein Übertragungsmechanismus mit einem flexiblen Organ, wie einem Stahlband, geschaffen, das, entsprechend umgelenkt, in Zug- und Druckrichtung auf eine in einer schrägen Führung laufende Lehnenstütze einwirkt. Das Übertragungsorgan ist einerseits am Fuß befestigt, während seine Umlenkung an einem Sitzträger angebracht ist. Es wird dadurch eine stufenlose Verstellung der Lehnenposition bei der Verstellung der Sitzhöhe erreicht.To adjust the backrest position in its height above the seat and the limitation of the seat depth caused by it with a seat height adjustment, a transmission mechanism with a flexible organ, such as a steel band, is created, which, deflected accordingly, in the direction of pull and push in one oblique guide acts on the running backrest. The transmission element is attached to the foot on the one hand, while its deflection is attached to a seat support. A stepless adjustment of the backrest position is thereby achieved when adjusting the seat height.

Diese und weitere Merkmale gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei einer Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein und vorteilhafte sowie für sich schutzfähige Ausführungen darstellen können, für die hier Schutz beansprucht wird. Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher erläutert. In den Zeichnungen zeigen:

Fig. 1 und 2
zentrale Teilschnitte durch einen Stuhl in zwei Verstellpositionen und
Fig. 3
einen Schnitt nach der Linie III in Fig. 2.
These and further features emerge from the claims and also from the description and the drawings, the individual features being realized individually or in groups in the form of sub-combinations in one embodiment of the invention and in other fields and being advantageous and capable of being protected by themselves Can represent versions for which protection is claimed here. Embodiments of the invention are shown in the drawings and are explained in more detail below. The drawings show:
1 and 2
central partial sections through a chair in two adjustment positions and
Fig. 3
a section along the line III in Fig. 2nd

Der in den Figuren 1 bis 3 dargestellte Stuhl 11 ist ein Schulstuhl mit einem Fuß 12, der von nicht dargestellten Kufen getragen wird und eine zentrale Säule 13 hat, die mit einer Gasfeder versehen oder durch diese gebildet wird. Sie enthält eine in ihr vertikal verschiebliche Stange 14, die gegenüber der Säule 13 durch einen nicht dargestellten Verstellmechanismus gelöst bzw. festgesetzt werden kann.The chair 11 shown in Figures 1 to 3 is a school chair with a foot 12 which is supported by runners, not shown, and has a central column 13 which is provided with a gas spring or is formed by this. It contains a vertically displaceable rod 14 which can be released or fixed relative to the column 13 by an adjusting mechanism, not shown.

Die Stange 14 ist an einem Sitzträger 15 angebracht, der, wie Fig. 3 zeigt, ein aus zwei Hälften bestehendes Kunststoffteil sein kann, an dessen oberem Flansch 16 ein als Formschale ausgebildeter Sitz 17 befestigt ist.The rod 14 is attached to a seat support 15 which, as shown in FIG. 3, can be a plastic part consisting of two halves, on the upper flange 16 of which a seat 17 designed as a molded shell is fastened.

Der Sitzträger 15 nimmt in einem Zapfen 18 die Stange 14 auf und enthält außer einer vertikalen Abdeckwandung 19 einen Lehnenträgerabschnitt 20. In ihm ist eine Lehnenstützenführung 21 in Form eines geraden Kanals von rechteckigem Querschnitt ausgebildet (Fig. 3), in dem eine Lehnenstütze 22 verschiebbar geführt ist. Die Lehnenstütze hat anschließend an ihren in der Führung 21 verlaufenden geraden Abschnitt einen abgewinkelten Abschnitt 23, der an seinem oberen Ende eine Lehne 24 trägt.The seat support 15 receives the rod 14 in a pin 18 and contains, in addition to a vertical cover wall 19, a backrest support section 20. A backrest support guide 21 in the form of a straight channel of rectangular cross section is formed in it, in which a backrest support 22 can be displaced is led. The backrest support then has, at its straight section running in the guide 21, an angled section 23 which carries a backrest 24 at its upper end.

Die Lehnenstützenführung 21 verläuft von der vertikalen Stuhlmittelachse 25 aus schräg nach außen und aufwärts, so daß, wie aus einem Vergleich der Figuren 1 und 2 zu erkennen ist, die Lehne in ihrer am weitesten von der Achse 25 entfernten Stellung auch höher über dem Sitz angeordnet ist (Fig. 1) als in ihrer der Achse 25 näheren Stellung (Fig. 2).The backrest support guide 21 extends obliquely outwards and upwards from the vertical center axis 25 of the chair, so that, as can be seen from a comparison of FIGS. 1 and 2, the backrest in its most distant position from the axis 25 is also arranged higher above the seat is (Fig. 1) than in its position closer to the axis 25 (Fig. 2).

In dem Lehnenträgerabschnitt 20 ist eine Führung 26 für ein als flexibles Stahlband ausgebildetes flexibles Übertragungsorgan 27. Wie auch die Führung 21 bildet sich die Führung 26 durch zwei gegeneinander gewandte Nuten in den beiden Halbschalen des Sitzträgers 15. Die Führung 26 verläuft nahe der Säule im wesentlichen vertikal aufwärts, dann etwa waagerecht in Richtung Lehne, um schließlich mit einem entsprechend großen Bogen auf die Lehnenstützenführung 21 zu und parallel zu dieser zu verlaufen.In the backrest support section 20 there is a guide 26 for a flexible transmission element 27 designed as a flexible steel band. Like the guide 21, the guide 26 is formed by two mutually facing grooves in the two half-shells of the seat support 15. The guide 26 essentially runs close to the column vertically upwards, then approximately horizontally in the direction of the backrest, in order to finally run with an appropriately large arch toward the backrest support guide 21 and parallel to it.

In dem Abschnitt, in dem die Führungen 21, 26 parallel zueinander verlaufen, besteht ein Durchbruch 28 zwischen ihnen, so daß Lehnenstütze und Übertragungsorgan 27 an ihren freien Enden durch ein Verbindungsstück 29 miteinander verbunden werden können.In the section in which the guides 21, 26 run parallel to one another, there is an opening 28 between them, so that the backrest support and transmission element 27 can be connected to one another at their free ends by a connecting piece 29.

Das andere Ende des flexiblen Übertragungsorgans 27 ist an einem Ring 30 befestigt, der um die Säule 13 drehbar ist, und dort zwischen Führungen, beispielsweise an der Säule 13 angebrachten Rollen 31, axial festgelegt, jedoch in Umfangsrichtung drehbar ist. Diese Art der Anbringung ist für Drehstühle vorgesehen. Bei einem nicht drehbaren, aber höhenverstellbaren Stuhl könnte die Anbringung des Übertragungsorganes 27 direkt an der Säule 13 erfolgen.The other end of the flexible transmission member 27 is attached to a ring 30 which is rotatable about the column 13 and is axially fixed there between guides, for example rollers 31 attached to the column 13, but is rotatable in the circumferential direction. This type of attachment is intended for swivel chairs. In the case of a chair that is not rotatable but height-adjustable, the transmission member 27 could be attached directly to the column 13.

Die Führung 26 für das Übertragungsorgan 27 läuft also in einem P-förmigen, fast geschlossenen Bogen um über 180° (und unter 270°) herum.The guide 26 for the transmission member 27 thus runs in a P-shaped, almost closed arc around 180 ° (and below 270 °).

Zur Verbesserung der Führung und der Gleiteigenschaften können in den Führungen 21, 26 beliebige bekannte Hilfsmitel vorgesehen sein, wie Rollen, Gleitbeschichtungen, Kunststoff-Führungsbuchsen oder dgl..In order to improve the guidance and the sliding properties, any known auxiliary means can be provided in the guides 21, 26, such as rollers, sliding coatings, plastic guide bushes or the like.

Die Funktion des Stuhles nach den Figuren 1 bis 3 ist aus den Zeichnungen klar ersichtlich, wird aber im folgenden zusätzlich beschrieben:The function of the chair according to FIGS. 1 to 3 can be clearly seen from the drawings, but is additionally described below:

In Fig. 1 ist der Stuhl in seiner höchsten Position. Dabei hat das flexible Übertragungsorgan 27 die Lehnenstütze 22 bis kurz vor das äußere Ende der Führung 21 gezogen, so daß die Lehne sich in ihrer am weitesten von der Mittelachse 25 entfernten und höchsten Stellung befindet. Das Verbindungsstück 29 zwischen Übertragungsorgan 27 und Lehnenstütze 22 liegt in der Nähe des Einlaufes 32 der Führung 26 in die Führung 22.In Fig. 1 the chair is in its highest position. The flexible transmission member 27 has pulled the backrest support 22 shortly before the outer end of the guide 21, so that the backrest is in its most distant from the central axis 25 and the highest position. The connecting piece 29 between the transmission member 27 and the backrest support 22 lies near the inlet 32 of the guide 26 into the guide 22.

Bei einer Drehung des Stuhles läuft der Ring 30, der am Sitzträger 15 axial beweglich, jedoch in Drehrichtung festgelegt sein kann, mit dem Sitzträger zwischen den Rollen 31 um die Säule 13 herum und beeinträchtigt so die Lehnenverstellung nicht.When the chair rotates, the ring 30, which can be axially movable on the seat support 15 but can be fixed in the direction of rotation, runs with the seat support between the rollers 31 around the column 13 and thus does not impair the backrest adjustment.

Wird nun durch Lösen des nicht dargestellten Sitzhöhenverstellmechanismus der Sitz in Richtung auf die Stellung nach Fig. 2 abgesenkt, so dringt die Stange 15 weiter in die Säule 13 ein. Da der Ring 30 an der Säule axial fest ist, schiebt er das flexible Übertragungsorgan 27 in der Führung 26 nach oben. Diese Bewegung wird über die Führung übertragen und schiebt die Lehnenstütze 22 in ihrer Führung 21 nach unten und zur Mitte, so daß die Lehne abwärts und auf die Mittelachse 25 zuwandert. Dies geschieht, da der Lehnenverstellmechanismus am Sitzträger 15 angebracht ist, relativ zum Sitz, so daß, gegenüber dem Erdboden gesehen, die Lehne 24 sich weiter absenkt als der Sitz 17. Der Stuhl hat dann eine verringerte Sitzhöhe, Sitztiefe und Lehnenhöhe über dem Sitz.If the seat is now lowered in the direction of the position according to FIG. 2 by loosening the seat height adjustment mechanism (not shown), the rod 15 penetrates further into the column 13. Since the ring 30 is axially fixed to the column, it pushes the flexible transmission member 27 in the guide 26 upwards. This movement is transmitted via the guide and pushes the backrest support 22 downwards and towards the center in its guide 21, so that the backrest moves downwards and towards the central axis 25. This happens because the backrest adjustment mechanism is attached to the seat support 15, relative to the seat, so that, as seen from the ground, the backrest 24 lowers further than the seat 17. The chair then has a reduced seat height, seat depth and backrest height above the seat.

Bei der Verstellung in der entgegengesetzten Richtung zieht dann das Übertragungsorgan 27 die Lehnenstütze 22 wieder in ihrer Führung 21 nach auswärts und oben.When adjusting in the opposite direction, the transmission member 27 then pulls the backrest support 22 outward and upward again in its guide 21.

Das Übertragungsorgan 27 wirkt also in Druck- und Zugrichtung und schafft damit eine sichere Festlegung der Lehne in jeder Position. Bei entsprechend breiten Lehnenstützen könnten auch zwei parallele Übertragungsorgane verwendet werden.The transmission member 27 thus acts in the pushing and pulling directions and thus creates a secure fixing of the backrest in any position. With correspondingly wide backrests, two parallel transmission elements could also be used.

Claims (6)

Stuhl mit in der Höhe verstellbarem Sitz (17) und mit in Abhängigkeit von der Sitzverstellung verstellbarer Lehne (24), mit zwischen Sitz- und Lehnenverstellung wirksamen Verstellmitteln, dadurch gekennzeichnet, daß die Verstellmittel wenigstens ein flexibles, zug- und schubübertragendes Übertragungsorgan (27) enthalten.Chair with height-adjustable seat (17) and with backrest (24) adjustable depending on the seat adjustment, with adjustment means effective between seat and backrest adjustment, characterized in that the adjustment means at least one flexible transmission and thrust-transmitting transmission element (27) contain. Stuhl nach Anspruch 1, dadurch gekennzeichnet, daß das Übertragungsorgan (27) als flexibles Band, insbesondere Stahlband, ausgebildet ist, das in einer Führung (26), ggf. mehrfach umgelenkt, verläuft.Chair according to claim 1, characterized in that the transmission member (27) is designed as a flexible band, in particular steel band, which runs in a guide (26), possibly deflected several times. Stuhl nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Lehne (24) an einer Lehnenstütze (22) angebracht ist, die in einer mit dem Sitz (17) verbundenen Lehnenstützen-Führung (21), vorzugsweise von der Stuhlmittelachse (25) schräg aufwärts, verschiebbar ist.Chair according to claim 1 or 2, characterized in that the backrest (24) is attached to a backrest support (22) which is inclined in a backrest support guide (21) connected to the seat (17), preferably obliquely from the central axis of the chair (25) upward, is slidable. Stuhl nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Übertragungsorgan (27) mit einem Ende am Fuß (12) des Stuhls, ggf. über einen Drehbeschlag (30, 31) drehbar, angebracht ist.Chair according to one of the preceding claims, characterized in that the transmission member (27) is attached at one end to the foot (12) of the chair, possibly rotatable via a rotating fitting (30, 31). Stuhl nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Führung (26, 21) des Übertragungsorgans (27) und/oder einer Lehnenstütze (22) in einem geteilten Sitzträger (15) ausgebildet ist.Chair according to one of claims 2 to 4, characterized in that the guide (26, 21) of the transmission member (27) and / or a backrest support (22) is formed in a split seat support (15). Stuhl nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Übertragungsorgan (27) derart umgelenkt ist, daß es beim Einziehen einer Lehnenstütze (22) in ihre Führung (21) parallel zu ihr schiebend verläuft.Chair according to one of the preceding claims, characterized in that the transmission member (27) is deflected such that when a backrest support (22) is pulled into its guide (21) it runs parallel to it.
EP94101690A 1993-02-26 1994-02-04 Height adjustable chair Withdrawn EP0614631A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934305841 DE4305841B4 (en) 1993-02-26 1993-02-26 Chair with height-adjustable seat
DE4305841 1993-02-26

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EP0614631A1 true EP0614631A1 (en) 1994-09-14

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1029471A1 (en) * 1999-02-19 2000-08-23 Bräutigam Möbel-Product-Marketing GmbH Chair with height adjustable seat
WO2003068114A1 (en) * 2002-02-14 2003-08-21 Alexei Alexeevich Bykov Method for relieving the backbone
CN109157040A (en) * 2018-10-25 2019-01-08 重庆市肿瘤研究所 Multi-functional PICC catheter maintenance seat

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19504542B4 (en) * 1995-02-11 2006-11-02 Moll System- und Funktions-Möbel GmbH chair
DE19505335C2 (en) * 1995-02-17 1997-07-03 Hohenloher Spezialmoebel Chair, especially school chair
DE19749889B4 (en) * 1997-11-12 2008-01-10 Hohenloher Spezialmöbelwerk Schaffitzel GmbH + Co. Chair, especially student chair

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH514316A (en) * 1970-05-04 1971-10-31 Ver Schulmoebelfabriken Gmbh Chair with adjustable seat
DE2032464A1 (en) * 1970-07-01 1972-01-05 Bergmann R chair

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1239451B (en) * 1962-05-29 1967-04-27 Dr Dr Hans W Juergens Chair with height-adjustable seat and adjustable backrest
ATE18124T1 (en) * 1982-10-13 1986-03-15 Stoll Gmbh Martin CHAIR.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH514316A (en) * 1970-05-04 1971-10-31 Ver Schulmoebelfabriken Gmbh Chair with adjustable seat
DE2032464A1 (en) * 1970-07-01 1972-01-05 Bergmann R chair

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1029471A1 (en) * 1999-02-19 2000-08-23 Bräutigam Möbel-Product-Marketing GmbH Chair with height adjustable seat
WO2003068114A1 (en) * 2002-02-14 2003-08-21 Alexei Alexeevich Bykov Method for relieving the backbone
CN109157040A (en) * 2018-10-25 2019-01-08 重庆市肿瘤研究所 Multi-functional PICC catheter maintenance seat
CN109157040B (en) * 2018-10-25 2021-05-11 重庆市肿瘤研究所 Multifunctional PICC catheter maintenance seat

Also Published As

Publication number Publication date
DE4305841A1 (en) 1994-09-01
DE4305841B4 (en) 2008-07-31

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