EP0259609A2 - Chair - Google Patents

Chair Download PDF

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Publication number
EP0259609A2
EP0259609A2 EP87111319A EP87111319A EP0259609A2 EP 0259609 A2 EP0259609 A2 EP 0259609A2 EP 87111319 A EP87111319 A EP 87111319A EP 87111319 A EP87111319 A EP 87111319A EP 0259609 A2 EP0259609 A2 EP 0259609A2
Authority
EP
European Patent Office
Prior art keywords
seat
support
shell
chair according
chair
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87111319A
Other languages
German (de)
French (fr)
Other versions
EP0259609A3 (en
EP0259609B1 (en
Inventor
Fritz Makiol
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.)
GIRSBERGER AG
Girsberger Holding AG
Original Assignee
GIRSBERGER AG
Girsberger Holding AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
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Application filed by GIRSBERGER AG, Girsberger Holding AG filed Critical GIRSBERGER AG
Priority to AT87111319T priority Critical patent/ATE70956T1/en
Publication of EP0259609A2 publication Critical patent/EP0259609A2/en
Publication of EP0259609A3 publication Critical patent/EP0259609A3/en
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
    • A47C1/03274—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs of torsion type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S297/00—Chairs and seats
    • Y10S297/02—Molded

Definitions

  • the invention relates to a chair, in particular an office swivel chair with an adjustable seat and an adjustable backrest connected in an articulated manner thereto, the seat and the backrest having a seat shell or a back shell provided with upholstery, and a foot having a standpipe and a support .
  • Such a known office chair has a supporting structure with a support frame between the support and the seat or the seat shell, this support frame being able to transmit the forces occurring in a person sitting on the chair from the seat shell or the back shell to the support.
  • This substructure leads to a comparatively large construction volume and also requires a corresponding manufacturing and assembly effort.
  • the narrowest possible side silhouette is often desired in such chairs.
  • the object of the present invention is to provide an office chair of the type mentioned at the outset, its construction and manufacturing is simplified, but at the same time, while maintaining the usual adjustability, an overall low overall height or thickness is possible both in the seating area and in the backrest area.
  • the invention proposes in particular that at least the seat shell itself or the like directly with the support. connected carrier part is formed.
  • the structural thickness in the area of the seat, under which the adjustment mechanism is also located can be considerably reduced, since the complex supporting substructure with a frame can be omitted by taking over the supporting function through the seat shell itself.
  • both the seat shell and the back shell and the like are designed as support parts which are connected directly to the support, the shells being connected to one another in their separating region by means of a joint.
  • An otherwise usual back support protruding from the back can be avoided, so that the desired, narrow side silhouette can continue from the seating area into the backrest area. This also enables a simpler structure for the backrest.
  • the like with the standpipe. connected support a seat support part connected to the seat shell via a swivel joint and a rigid part or the like, in particular rigidly connected to the back shell. as well as a back support part connected to the seat support part via a rotary / sliding bearing.
  • the seat can be adjusted around the swivel joint, with the backrest also changing the angle at the same time between seat and backrest, this movement follows.
  • the back shell is formed in two parts with a pelvic or lumbar part, which preferably extends approximately over the width of the seat, and a shoulder part, the two back shell parts being pivotable relative to one another from a stop position against spring support.
  • the pelvic or lumbar part at least partially takes on the function of an otherwise required back support.
  • the subdivision of the back shell allows an exact adjustment to the respective sitting position of a person using the chair.
  • the seat support part of the support has a spring for resetting the seat, preferably a torsion spring, at the swivel joint at its front end. Such torsion suspension can be accommodated in a space-saving manner, so that this construction also contributes to a low overall height in the seating area.
  • one or more return springs supporting the seat return spring preferably pressure springs engaging on the underside, are provided between the seat shell and the back shell or the lumbar part.
  • the torsion springs and the return springs together ensure that the seat and the backrest come to an upper or front position when the seat mechanism is released and the seat is relieved. Due to the division into two spring groups, the respective springs can be made comparatively small, so that this in turn also contributes to a low overall height.
  • a chair 1 (FIG. 1) is designed as an office swivel chair and essentially has a base 2, a support 4 fastened to its stand tube 3, a seat 5 and a backrest 6.
  • the seat 5 and the backrest 6 are provided with a removable padding 7, under which there is a seat shell 8 or a back shell 9, as can be clearly seen in FIG. 3.
  • the seat shell and preferably also the back shell are designed as carrier parts directly connected to the support 4. They therefore also take on the function of a supporting substructure, so that such is not necessary in the chair according to the invention.
  • the shells are arched to achieve the required strength and have bead-like stiffening formations 10 in their outer edge areas and also in the area of the intermediate surfaces.
  • the stiffening formations are preferably molded on the inside, facing the padding 7, so that the shells can be smooth on the outside without disruptive projections.
  • the seat shell 8 and the back shell 9 are connected to one another in their separating region 11 via joints 12.
  • formations 13 are provided on the shells 8, 9 at the mutually facing end faces to form approximately flange-shaped joint parts.
  • Insert pins 14 inserted from the side form the hinge axes.
  • FIGS. 2 and 4 also clearly show that the shells are designed to interlock with one another at their facing ends, so that there is practically no intermediate gap in the separating region 11.
  • the support 4 has a seat support part 16 which is connected to the seat shell via a swivel joint 15 and which on the other hand is connected to the standpipe 3.
  • the support has a back support part 18, which is in particular rigidly connected to the back shell 9 and is connected to the other support part 16 at its end facing away from the back shell via a rotary / sliding bearing 17. 2 and 4 it is indicated that this rotary / sliding bearing essentially has a sliding slot 19 in the seat support part 16 and a cross bolt 20 extending through this slot in the back support part 18.
  • This arrangement ensures, in a manner known per se, that the seat moves somewhat in the same direction with this movement when the backrest is adjusted.
  • the further adjustment and locking mechanism is not shown in the drawings for the sake of simplicity.
  • the seat support part 16 of the support 4 has a torsion suspension 21 at its front end at the swivel joint 15 for returning the seat to an upper position.
  • This torsion suspension 21 adjusts the seat 5 about the swivel joint 15 in the direction of arrow Pf 1 (FIG. 1) when the adjustment mechanism is unlocked.
  • the backrest 6 is also pivoted in the direction of the arrow Pf 2.
  • Fig. 4 clearly shows that between the seat shell 8 and the back shell 9, the above-mentioned seat return movement supporting return springs 22 are provided. These are attached on the underside and designed as compression springs. They lie within a support cladding, which is omitted in FIG. 4. As already mentioned, the return springs 22 act in the same direction as the torsion spring 21. This division into several spring groups allows the individual springs to be kept very small, so that they can also be accommodated well within a flat support and adjustment mechanism.
  • the backrest 6 is formed in two parts with a pelvic or lumbar part 23 and a shoulder part 24 adjoining it upwards.
  • the back shell parts 23, 24 are pivotally connected to one another over a specific area.
  • a spring support with springs 25 holds the shoulder part 24 against stops 26 in a forward pivoting position. When leaning against the shoulder part 24, this can then be pivoted somewhat backwards against the spring support, so that adaptation to the respective sitting position of a user is possible.
  • the back shell parts 23 and 24 are connected to one another via joints 28 located on their side edges 27.
  • connection points for fastening armrests 28 which can be seen in FIG. 1 and which can be attached if necessary.
  • Fig. 3 it can also be clearly seen that the pelvic or lumbar part 23 extends over the entire width of the seat.
  • the seat shell 8 and the back shell 9 with the pelvic part 23 and the shoulder part 24 preferably consist of glass mat-reinforced, thermoplastic material, preferably of reinforced polypropylene. As a result, the shells can be produced in one piece in one operation.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Seats For Vehicles (AREA)

Abstract

A swivel chair has a leg with a support at the upper end of its upright column and two shells which are articulately connected to each other and at least one of which is articulately connected directly to the support. The one shell carries a cushion and forms therewith the seat of the chair. The other shell is assembled of two sections which are pivotable relative to each other about a horizontal axis, one of which supports the lumbar region of the body of the occupant of the chair and the other of which serves as a shoulder support. The one section is articulately connected to the rear portion of the one shell by two hinges.

Description

Die Erfindung betrifft einen Stuhl, insbesondere einen Büro­drehstuhl mit einem verstellbaren Sitz und einer gelenkig damit verbundenen, verstellbaren Rückenlehne, wobei der Sitz und die Rückenlehne eine mit einer Polsterung versehene Sitzschale bzw. eine Rückenschale aufweisen, sowie mit einem ein Standrohr und einen Support aufweisenden Fuß.The invention relates to a chair, in particular an office swivel chair with an adjustable seat and an adjustable backrest connected in an articulated manner thereto, the seat and the backrest having a seat shell or a back shell provided with upholstery, and a foot having a standpipe and a support .

Ein solcher, bekannter Bürostuhl weist eine Tragekonstruktion mit einem Trägerrahmen zwischen dem Support und dem Sitz bzw. der Sitzschale auf, wobei dieser Trägerrahmen die auftre­tenden Kräfte bei einer auf dem Stuhl sitzenden Person von der Sitzschale bzw. der Rückenschale auf den Support über­tragen kann. Diese Unterkonstruktion führt zu einem ver­gleichsweise großen Bauvolumen und erfordert auch einen entsprechenden Herstellungs- und Montageaufwand. Häufig ist bei solchen Stühlen eine möglichst schmale Seitensilhouette erwünscht. Dabei soll aber gleichzeitig durch eine entsprechende Verstellmeachnik auch eine vielfache Verstellbarkeit des Sitzes und der Rückenlehne möglich sein. Dies läßt sich jedoch bei der bekannten Konstruktion nicht in dem erwünschten Maße realisieren.Such a known office chair has a supporting structure with a support frame between the support and the seat or the seat shell, this support frame being able to transmit the forces occurring in a person sitting on the chair from the seat shell or the back shell to the support. This substructure leads to a comparatively large construction volume and also requires a corresponding manufacturing and assembly effort. The narrowest possible side silhouette is often desired in such chairs. At the same time, however, it should also be possible to adjust the seat and the backrest in multiple ways by means of an appropriate adjustment mechanism. However, this cannot be achieved to the desired extent in the known construction.

Aufgabe der vorliegenden Erfindung ist es, einen Bürostuhl der eingangs erwähnten Art zu schaffen, dessen Konstruktion und Fertigung vereinfacht ist, wobei gleichzeitig aber auch, unter Beibehaltung der üblichen Einstellbarkeit, eine ins­gesamt geringe Bauhöhe bzw. Dicke sowohl im Sitzbereich als auch im Rückenlehnenbereich möglich ist.The object of the present invention is to provide an office chair of the type mentioned at the outset, its construction and manufacturing is simplified, but at the same time, while maintaining the usual adjustability, an overall low overall height or thickness is possible both in the seating area and in the backrest area.

Zur Lösung dieser Aufgabe wird erfindungsgemäß insbesondere vorgeschlagen, daß zumindest die Sitzschale selbst als unmittelbar mit dem Support od.dgl. verbundenes Trägerteil ausgebildet ist.
Dadurch kann die Baudicke im Bereich des Sitzes, unter dem sich auch die Verstellmechanik befindet, erheblich reduziert werden, da durch die Übernahme der Tragfunktion durch die Sitzschale selbst, die aufwendige Stütz-Unterkonstruktion mit einem Rahmen entfallen kann.To solve this problem, the invention proposes in particular that at least the seat shell itself or the like directly with the support. connected carrier part is formed.
As a result, the structural thickness in the area of the seat, under which the adjustment mechanism is also located, can be considerably reduced, since the complex supporting substructure with a frame can be omitted by taking over the supporting function through the seat shell itself.

Besonders vorteilhaft ist es, wenn sowohl die Sitzschale als auch die Rückenschale und dergleichen als unmittelbar mit dem Support verbundene Trägerteile ausgebildet sind, wobei die Schalen in ihrem Trennbereich über ein Gelenk miteinander verbunden sind.
Eine sonst übliche, über die Rückseite vorstehende Rücken­stütze kann dadurch vermieden werden, so daß die erwünschte, schmale Seitensilhouette sich vom Sitzbereich in den Rückenlehnenbereich fortsetzen kann. Außerdem ist dadurch auch bei der Rückenlehne ein einfacherer Aufbau möglich.It is particularly advantageous if both the seat shell and the back shell and the like are designed as support parts which are connected directly to the support, the shells being connected to one another in their separating region by means of a joint.
An otherwise usual back support protruding from the back can be avoided, so that the desired, narrow side silhouette can continue from the seating area into the backrest area. This also enables a simpler structure for the backrest.

Zweckmäßigerweise weist der mit dem Standrohr od.dgl. ver­bundene Support ein mit der Sitzschale über ein Schwenk­gelenk verbundenes Sitzträgerteil sowie ein insbesondere starr mit der Rückenschale od.dgl. sowie über eine Dreh-­Schiebelagerung mit dem Sitzträgerteil verbundenes Rücken­trägerteil auf. Durch diese Anordnung ist der Sitz um das Schwenkgelenk verstellbar, wobei gleichzeitig auch die Rückenlehne unter gleichzeitiger Veränderung des Winkels zwischen Sitz und Rückenlehne, diese Bewegung mitmacht.Advantageously, the like with the standpipe. connected support a seat support part connected to the seat shell via a swivel joint and a rigid part or the like, in particular rigidly connected to the back shell. as well as a back support part connected to the seat support part via a rotary / sliding bearing. With this arrangement, the seat can be adjusted around the swivel joint, with the backrest also changing the angle at the same time between seat and backrest, this movement follows.

Eine Ausführungsform sieht vor, daß die Rückenschale zwei­teilig mit einem sich vorzugsweise etwa über die Breite des Sitzes erstreckenden Becken- oder Lumbalteil sowie einem Schulterteil ausgebildet ist, wobei die beiden Rücken­schalenteile aus einer Anschlagstellung gegen eine Feder­abstützung relativ zueinander verschwenkbar sind. Das Becken- oder Lumbalteil übernimmt hierbei zumindest teilweise die Funktion einer sonst erforderlichen Rückenstütze. Durch die Unterteilung der Rückenschale ist eine genaue Anpassung an die jeweilige Sitzposition einer den Stuhl benützenden Per­son vorhanden.
Eine Weiterbildung der Erfindung sieht vor, daß das Sitz­trägerteil des Supports an seinem vorderen Ende bei dem Schwenkgelenk eine Federung zur Sitzrückstellung, vorzugs­weise eine Torsionsfederung aufweist. Eine solche Torsions­federung läßt sich platzsparend unterbringen, so daß auch diese Konstruktion zu einer geringen Bauhöhe im Sitzbereich beiträgt.
Besonders vorteilhaft ist es, wenn zwischen der Sitzschale und der Rückenschale bzw. dem Lumbalteil eine oder mehrere, die Sitzrückstellfederung unterstützende Rückstellfedern, vorzugsweise unterseitig angreifende Druckfedern vorge­sehen sind. Die Torsionsfederung und die Rückstellfedern sorgen zusammen dafür, daß der Sitz und die Lehne bei aus­gelöster Sitzmechanik und entlastetem Sitz in eine obere bzw. vordere Stellung gelangt. Durch die Aufteilung in zwei Federgruppen können die jeweiligen Federn vergleichs­weise klein ausgebildet sein, so daß auch dies wiederum insgesamt zu einer geringen Bauhöhe beiträgt.One embodiment provides that the back shell is formed in two parts with a pelvic or lumbar part, which preferably extends approximately over the width of the seat, and a shoulder part, the two back shell parts being pivotable relative to one another from a stop position against spring support. The pelvic or lumbar part at least partially takes on the function of an otherwise required back support. The subdivision of the back shell allows an exact adjustment to the respective sitting position of a person using the chair.
A further development of the invention provides that the seat support part of the support has a spring for resetting the seat, preferably a torsion spring, at the swivel joint at its front end. Such torsion suspension can be accommodated in a space-saving manner, so that this construction also contributes to a low overall height in the seating area.
It is particularly advantageous if one or more return springs supporting the seat return spring, preferably pressure springs engaging on the underside, are provided between the seat shell and the back shell or the lumbar part. The torsion springs and the return springs together ensure that the seat and the backrest come to an upper or front position when the seat mechanism is released and the seat is relieved. Due to the division into two spring groups, the respective springs can be made comparatively small, so that this in turn also contributes to a low overall height.

Zusätzliche Ausgetaltungen der Erfindung sind in den weiteren Unteransprüchen aufgeführt. Nachstehend ist die Erfindung mit ihren wesentlichen Einzelheiten anhand der Zeichnung noch näher erläutert.Additional refinements of the invention are listed in the further subclaims. The invention with its essential details is explained in more detail below with reference to the drawing.

Es zeigt:

  • Fig. 1 eine Seitenansicht eines erfindungsgemäßen Dreh­sessels,
  • Fig. 2 eine Seitenansicht eines Drehsessels ohne Verkleidung der Verstellmechanik,
  • Fig. 3 eine Ansicht der Sitzschale sowie der damit ver­schwenkbar verbundenen, zweiteilig ausgebildeten Rückenschale und
  • Fig. 4 eine Unterseitenansicht eines Stuhles mit Support und davon getragenen Schalen.
It shows:
  • 1 is a side view of a swivel chair according to the invention,
  • 2 is a side view of a swivel chair without covering the adjustment mechanism,
  • Fig. 3 is a view of the seat shell and the pivotable, two-part back shell and
  • Fig. 4 is an underside view of a chair with support and shells carried by it.

Ein Stuhl 1 (Fig. 1) ist als Bürodrehstuhl ausgebildet und weist im wesentlichen einen Standfuß 2, einen an dessen Standrohr 3 befestigten Support 4, einen Sitz 5 sowie eine Rückenlehne 6 auf.
Der Sitz 5 und die Rückenlehne 6 sind mit einer insbesondere abnehmbaren Polsterung 7 versehen, unter der sich eine Sitz­schale 8 bzw. eine Rückenschale 9 befinden, wie dies gut in Fig. 3 erkennbar ist.
Erfindungsgemäß ist nun vorgesehen, daß die Sitzschale und vorzugsweise auch die Rückenschale als unmittelbar mit dem Support 4 verbundene Trägerteile ausgebildet sind. Sie übernehmen somit auch die Funktion einer tragenden Unter­konstruktion, so daß eine solche bei dem erfindungsgemäßen Stuhl nicht erforderlich ist. Die Schalen sind zur Er­zielung der erforderlichen Festigkeit gewölbt ausgebildet und weisen bei ihren Außenrandbereichen und auch im Bereich der Zwischenflächen, sickenartige Versteifungsanformungen 10 auf. Die Versteifungsanformungen sind vorzugsweise innen­seitig, der Polsterung 7 zugewandt angeformt, so daß die Schalen außenseitig glatt ohne störende Vorsprünge ausge­bildet sein können.A chair 1 (FIG. 1) is designed as an office swivel chair and essentially has a base 2, a support 4 fastened to its stand tube 3, a seat 5 and a backrest 6.
The seat 5 and the backrest 6 are provided with a removable padding 7, under which there is a seat shell 8 or a back shell 9, as can be clearly seen in FIG. 3.
According to the invention, it is now provided that the seat shell and preferably also the back shell are designed as carrier parts directly connected to the support 4. They therefore also take on the function of a supporting substructure, so that such is not necessary in the chair according to the invention. The shells are arched to achieve the required strength and have bead-like stiffening formations 10 in their outer edge areas and also in the area of the intermediate surfaces. The stiffening formations are preferably molded on the inside, facing the padding 7, so that the shells can be smooth on the outside without disruptive projections.

Die Sitzschale 8 und die Rückenschale 9 sind in ihrem Trenn­bereich 11 über Gelenke 12 miteinander verbunden. Dazu sind an den Schalen 8, 9 bei den zueinander weisenden Stirnenden Anformungen 13 zur Bildung von etwa flanschförmigen Gelenk­teilen vorgesehen. Von der Seite her eingesetzte Steckbolzen 14 bilden die Gelenkachsen.
Fig. 2 und 4 lassen auch noch gut erkennen, daß die Schalen an ihren zueinander weisenden Stirnenden hohlkehlenartig in­einandergreifend ausgebildet sind, so daß sich praktisch kein Zwischenspalt im Trennbereich 11 ergibt.
Der Support 4 weist ein mit der Sitzschale über ein Schwenk­gelenk 15 verbundenes Sitzträgerteil 16 auf, das andererseits mit dem Standrohr 3 verbunden ist. Weiterhin hat der Support ein insbesondere starr mit der Rückenschale 9 verbundenes R ückenträgerteil 18, welches an seinem der Rückenschale abgewandten Ende über eine Dreh-Schiebelagerung 17 mit dem anderen Supportteil 16 verbunden ist. In Fig. 2 und 4 ist angedeutet, daß diese Dreh-Schiebelagerung im wesentlichen einen Schiebeschlitz 19 in dem Sitzträgerteil 16 sowie einen diesen Schlitz durchgreifenden Querbolzen 20 in dem Rücken­trägerteil 18 aufweist. Durch diese Anordnung wird in an sich bekannter Weise erreicht, daß bei einer Rückenlehnenver­stellung gleichsinnig der Sitz mit dieser Bewegung etwas mitläuft. Die weitere Verstell- und Arretiermechanik ist in den Zeichnungen der Einfachheit halber nicht näher darge­stellt.
Das Sitzträgerteil 16 des Supports 4 weist an seinem vorderen Ende bei dem Schwenkgelenk 15 zur Sitzrückstellung in eine obere Lage, eine Torsionsfederung 21 auf. Durch diese Torsions­federung 21 erfolgt eine Verstellung des Sitzes 5 um das Schwenkgelenk 15 in Richtung des Pfeiles Pf 1 (Fig. 1), wenn die Verstellmechanik entriegelt ist. Durch die Verbindung des Rückenträgerteiles 18 über die Dreh-Schiebelagerung 17 erfolgt gleichzeitig auch ein Verschwenken der Rückenlehne 6 in Richtung des Pfeiles Pf 2.The seat shell 8 and the back shell 9 are connected to one another in their separating region 11 via joints 12. For this purpose, formations 13 are provided on the shells 8, 9 at the mutually facing end faces to form approximately flange-shaped joint parts. Insert pins 14 inserted from the side form the hinge axes.
FIGS. 2 and 4 also clearly show that the shells are designed to interlock with one another at their facing ends, so that there is practically no intermediate gap in the separating region 11.
The support 4 has a seat support part 16 which is connected to the seat shell via a swivel joint 15 and which on the other hand is connected to the standpipe 3. Furthermore, the support has a back support part 18, which is in particular rigidly connected to the back shell 9 and is connected to the other support part 16 at its end facing away from the back shell via a rotary / sliding bearing 17. 2 and 4 it is indicated that this rotary / sliding bearing essentially has a sliding slot 19 in the seat support part 16 and a cross bolt 20 extending through this slot in the back support part 18. This arrangement ensures, in a manner known per se, that the seat moves somewhat in the same direction with this movement when the backrest is adjusted. The further adjustment and locking mechanism is not shown in the drawings for the sake of simplicity.
The seat support part 16 of the support 4 has a torsion suspension 21 at its front end at the swivel joint 15 for returning the seat to an upper position. This torsion suspension 21 adjusts the seat 5 about the swivel joint 15 in the direction of arrow Pf 1 (FIG. 1) when the adjustment mechanism is unlocked. By connecting the back support part 18 via the rotary / sliding bearing 17, the backrest 6 is also pivoted in the direction of the arrow Pf 2.

Fig. 4 läßt gut erkennen, daß zwischen der Sitzschale 8 und der Rückenschale 9 die vorerwähnte Sitzrückstellbewegung unterstützende Rückstellfedern 22 vorgesehen sind. Diese sind unterseitig angebracht und als Druckfedern ausgebildet. Sie liegen innerhalb einer Supportverkleidung, die in Fig. 4 weggelassen ist.
Wie bereits vorerwähnt, wirken die Rückstellfedern 22 in gleiche Richtung wie die Torsionsfederung 21. Durch diese Aufteilung in mehrere Federgruppen können die einzelnen Federn sehr klein gehalten werden, so daß sie gut auch innerhalb einer flach ausgebildeten Träger- und Verstell­mechanik unterbringbar sind.Fig. 4 clearly shows that between the seat shell 8 and the back shell 9, the above-mentioned seat return movement supporting return springs 22 are provided. These are attached on the underside and designed as compression springs. They lie within a support cladding, which is omitted in FIG. 4.
As already mentioned, the return springs 22 act in the same direction as the torsion spring 21. This division into several spring groups allows the individual springs to be kept very small, so that they can also be accommodated well within a flat support and adjustment mechanism.

Im Ausführungsbeispiel ist die Rückenlehne 6 zweiteilig mit einem Becken- oder Lumbalteil 23 sowie einem sich daran nach oben anschließenden Schulterteil 24 ausgebildet. Die Rücken­schalenteile 23, 24 sind über einen bestimmten Bereich ver­schwenkbar miteinander verbunden. Durch eine Federabstützung mit Federn 25 (vgl. Fig. 2 und 3) wird das Schulterteil 24 gegen Anschläge 26 in einer vorderen Schwenkstellung ge­halten. Beim Anlehnen an das Schulterteil 24 ist dieses dann gegen die Federabstützung etwas nach hinten verschwenkbar, so daß eine Anpassung an die jeweilige Sitzposition eines Benutzers möglich ist.
Die Rückenschalenteile 23 und 24 sind über an ihren Seiten­rändern 27 befindliche Gelenke 28 miteinander verbunden. Für die Druckfedern 25, die rückseitig an der Rückenlehne 6 angeordnet sind, sind Anformungen vorgesehen, zwischen die die Federn 25 eingesetzt sind.
Bei den Gelenken 28 befinden sich auch noch Anschlußstellen zum Befestigen von in Fig. 1 erkennbaren Armlehnen 28, die bedarfsweise anbringbar sind.
In Fig. 3 ist auch gut erkennbar, daß das Becken- oder Lumbal­teil 23 sich über die gesamte Breite des Sitzes erstreckt. Dadurch sowie durch die Versteifungsanformungen 10 und auch durch eine bombierte, d.h. nach hinten ausgewölbte Formung erhält man auch in diesem Bereich trotz geringer Dicke eine hohe Festigkeit, so daß auch die beim Anlehnen auftretenden Kräfte gut übertragen werden können.
Die Sitzschale 8 und die Rückenschale 9 mit dem Beckenteil 23 und dem Schulterteil 24 bestehen vorzugsweise aus glasmatten­verstärktem, thermoplastischem Kunststoffmaterial, vorzugs­weise aus armiertem Polypropylen. Dadurch sind die Schalen jeweils einstückig in einem Arbeitsgang herstellbar.In the exemplary embodiment, the backrest 6 is formed in two parts with a pelvic or lumbar part 23 and a shoulder part 24 adjoining it upwards. The back shell parts 23, 24 are pivotally connected to one another over a specific area. A spring support with springs 25 (see FIGS. 2 and 3) holds the shoulder part 24 against stops 26 in a forward pivoting position. When leaning against the shoulder part 24, this can then be pivoted somewhat backwards against the spring support, so that adaptation to the respective sitting position of a user is possible.
The back shell parts 23 and 24 are connected to one another via joints 28 located on their side edges 27. For the compression springs 25, which are arranged on the back of the backrest 6, projections are provided, between which the springs 25 are inserted.
At the joints 28 there are also connection points for fastening armrests 28 which can be seen in FIG. 1 and which can be attached if necessary.
In Fig. 3 it can also be clearly seen that the pelvic or lumbar part 23 extends over the entire width of the seat. As a result, as well as through the stiffening formations 10 and also a cambered, ie bulging outwards, high strength is obtained in this area, despite the small thickness, so that the forces occurring when leaning against can also be transmitted well.
The seat shell 8 and the back shell 9 with the pelvic part 23 and the shoulder part 24 preferably consist of glass mat-reinforced, thermoplastic material, preferably of reinforced polypropylene. As a result, the shells can be produced in one piece in one operation.

Insgesamt erhält man durch die Integration eines sonst vor­gesehenen Stützrahmens in die Sitzschale 8 und auch in die Rückenschale 9 eine sehr geringe Bauhöhe bzw. Dicke sowohl im Bereich des Sitzes als auch der Lehne, so daß Sessel mit durchgehend schlanker Seitensilhouette möglich sind, ohne daß nachteilige Kompromisse hinsichtlich z.B. der Ver­stellmechanik und dergleichen eingegangen werden müssen. Gleichzeitig sind auch die Konstruktion und die Montage erheblich vereinfacht.Overall, by integrating an otherwise provided support frame in the seat shell 8 and also in the back shell 9, a very small overall height or thickness is obtained both in the area of the seat and the backrest, so that armchairs with a continuously slender side silhouette are possible without disadvantageous Compromises regarding e.g. the adjustment mechanism and the like must be dealt with. At the same time, the construction and assembly are considerably simplified.

Alle in der Beschreibung, den Ansprüchen und der Zeichnung dargestellten Merkmale können sowohl einzeln als auch in beliebiger Kombination miteinander erfindungswesentlich sein.All the features shown in the description, the claims and the drawing can be essential to the invention both individually and in any combination with one another.

Claims (12)

1. Stuhl, insbesondere Bürodrehstuhl mit einem verstell­baren Sitz und einer gelenkig damit verbundenen, ver­stellbaren Rückenlehne, wobei der Sitz und die Rücken­lehne eine mit einer Polsterung versehene Sitzschale bzw. eine Rückenschale aufweisen, sowie mit einem ein Standrohr und einen Support aufweisenden Fuß, dadurch gekennzeichnet, daß zumindest die Sitzschale (8) selbst als unmittelbar mit dem Support (4) od.dgl. verbundenes Trägerteil ausgebildet ist.1. Chair, in particular office swivel chair with an adjustable seat and an articulated, adjustable backrest, the seat and the backrest having a seat shell or a back shell provided with upholstery, and also having a stand tube and a support, characterized in that that at least the seat shell (8) itself or the like as directly to the support (4). connected carrier part is formed. 2. Stuhl nach Anspruch 1, dadurch gekennzeichnet, daß sowohl die Sitzschale (8) als auch die Rückenschale (9) und dgl. als unmittelbar mit dem Support (4) verbundene Trägerteile ausgebildet sind und daß die Schalen in ihrem Trennbereich (11) über ein Gelenk (12) miteinan­der verbunden sind.2. Chair according to claim 1, characterized in that both the seat shell (8) and the back shell (9) and the like. Are formed as directly connected to the support (4) support parts and that the shells in their separation area (11) a joint (12) are connected to each other. 3. Stuhl nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der mit dem Standrohr (3) od.dgl. verbundene Sup­port (4) ein mit der Sitzschale (8) über ein Schwenk­gelenk (15) verbundenes Sitzträgerteil (16) sowie ein insbesondere starr mit der Rückenschale (9) od.dgl. sowie über eine Dreh-Schiebelagerung (17) mit dem Sitz­trägerteil verbundenes Rückenträgerteil (18) aufweist.3. Chair according to claim 1 or 2, characterized in that with the standpipe (3) or the like. connected support (4) a seat support part (16) connected to the seat shell (8) via a swivel joint (15) and a rigid part or the like, in particular rigidly connected to the back shell (9). and also has a back support part (18) connected to the seat support part via a rotary / sliding bearing (17). 4. Stuhl nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Schalen (8, 9) an ihren zueinander weisenden Stirnenden, vorzugsweise außen­randseitig, Anformungen (13) zur Bildung von Gelenk­teilen aufweisen.4. Chair according to one of claims 1 to 3, characterized in that the shells (8, 9) on their mutually facing end faces, preferably on the outside edge, have projections (13) for forming joint parts. 5. Stuhl nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Schalen (8, 9) an ihren zueinander weisenden Stirnenden zumindest bereichs­weise hohlkehlenartig ineinander greifend ausge­bildet sind.5. Chair according to one of claims 1 to 4, characterized in that the shells (8, 9) at their mutually facing ends are at least partially formed like a groove. 6. Stuhl nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Schalen (8, 9) zumindest bei ihren Außenrandbreichen, vorzugsweise auch im Bereich der Zwischenflächen, sickenartige Ver­steifungsanformungen (10) aufweisen und daß diese Anformungen insbesondere innenseitig, der Polsterung zugewandt angeformt sind.6. Chair according to one of claims 1 to 5, characterized in that the shells (8, 9) at least at their outer edge areas, preferably also in the area of the intermediate surfaces, have bead-like stiffening formations (10) and that these formations, in particular on the inside, face the upholstery are molded. 7. Stuhl nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Rückenlehne (6) zweiteilig mit einem sich vorzugsweise etwa über die Breite des Sitzes erstreckenden Becken- oder Lumbalteil (23) sowie einem Schulterteil (24) ausgebildet ist und daß die beiden Rückenschalenteile aus einer Anschlag­stellung gegen eine Federabstützung relativ zueinander verschwenkbar sind.7. Chair according to one of claims 1 to 6, characterized in that the backrest (6) is formed in two parts with a preferably over the width of the seat extending pelvic or lumbar part (23) and a shoulder part (24) and that two back shell parts are pivotable relative to each other from a stop position against a spring support. 8. Stuhl nach Anspruch 7, dadurch gekennzeichnet, daß die Rückenschalenteile über insbesondere an ihren Seitenrändern befindliche, vorzugsweise angeformte Gelenkteile aufweisende Gelenke (28) miteinander verbunden sind, daß bei diesen Gelenken Schwenkan­ schläge (26) zur Begrenzung der Vorschwenkbewegung des Schulterteiles vorgesehen sind und daß rückseitig eine oder mehrere, in Anschlagrichtung wirkende Druckfedern (25) vorgesehen sind.8. Chair according to claim 7, characterized in that the back shell parts are connected to one another via joints (28) located in particular on their side edges, preferably formed-on joint parts, that in these joints swivel Blows (26) are provided to limit the forward pivoting movement of the shoulder part and that one or more compression springs (25) acting in the stop direction are provided on the back. 9. Stuhl nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß bei den Gelenken (28) zwischen den beiden Rücken­schalenteilen (23, 24) Anschlußstellen zum Befestigen von Armlehnen (29) vorgesehen sind.9. Chair according to claim 7 or 8, characterized in that at the joints (28) between the two back shell parts (23, 24) connection points for attaching armrests (29) are provided. 10. Stuhl nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß das Sitzträgerteil (16) des Supports (4) an seinem vorderen Ende bei dem Schwenk­gelenk (15) eine Federung zur Sitzrückstellung, vor­zugsweise eine Torsionsfederung (21) aufweist.10. Chair according to one of claims 1 to 9, characterized in that the seat support part (16) of the support (4) at its front end at the swivel joint (15) has a suspension for seat return, preferably a torsion suspension (21). 11. Stuhl nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß zwischen der Sitzschale (8) und der Rückenschale (9) bzw. dem Lumbalteil (23) eine oder mehrere, die Sitzrückstellfederung (21) unter­stützende Rückstellfedern (22), vorzugsweise unter­seitig angreifende Druckfedern vorgesehen sind.11. Chair according to one of claims 1 to 10, characterized in that between the seat shell (8) and the back shell (9) or the lumbar part (23) one or more, the seat return spring (21) supporting return springs (22), preferably compression springs engaging on the underside are provided. 12. Stuhl nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Sitzschale (8) und die Rücken­schale (9) aus glasmattenverstärktem, thermoplastischen Kunststoffmaterial, vorzugsweise Polypropylen besteht.12. Chair according to one of claims 1 to 11, characterized in that the seat shell (8) and the back shell (9) consists of glass mat-reinforced, thermoplastic material, preferably polypropylene.
EP87111319A 1986-09-08 1987-08-05 Chair Expired - Lifetime EP0259609B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87111319T ATE70956T1 (en) 1986-09-08 1987-08-05 CHAIR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863630503 DE3630503A1 (en) 1986-09-08 1986-09-08 CHAIR
DE3630503 1986-09-08

Publications (3)

Publication Number Publication Date
EP0259609A2 true EP0259609A2 (en) 1988-03-16
EP0259609A3 EP0259609A3 (en) 1988-06-22
EP0259609B1 EP0259609B1 (en) 1992-01-02

Family

ID=6309124

Family Applications (1)

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EP87111319A Expired - Lifetime EP0259609B1 (en) 1986-09-08 1987-08-05 Chair

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US (1) US4834453A (en)
EP (1) EP0259609B1 (en)
AT (1) ATE70956T1 (en)
DE (2) DE3630503A1 (en)

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Also Published As

Publication number Publication date
EP0259609A3 (en) 1988-06-22
US4834453A (en) 1989-05-30
ATE70956T1 (en) 1992-01-15
DE3630503A1 (en) 1988-03-10
DE3775664D1 (en) 1992-02-13
EP0259609B1 (en) 1992-01-02
DE3630503C2 (en) 1991-05-08

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