EP0488278B1 - Seat support for an office chair - Google Patents

Seat support for an office chair Download PDF

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Publication number
EP0488278B1
EP0488278B1 EP91120386A EP91120386A EP0488278B1 EP 0488278 B1 EP0488278 B1 EP 0488278B1 EP 91120386 A EP91120386 A EP 91120386A EP 91120386 A EP91120386 A EP 91120386A EP 0488278 B1 EP0488278 B1 EP 0488278B1
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EP
European Patent Office
Prior art keywords
base body
seat
seat support
support according
joined
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
EP91120386A
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German (de)
French (fr)
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EP0488278A1 (en
Inventor
Hermann Bock
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Martin Bock Kunststoffverarbeitung
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Martin Bock Kunststoffverarbeitung
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Publication of EP0488278A1 publication Critical patent/EP0488278A1/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
    • A47C1/03283—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with fluid springs

Definitions

  • the invention is directed to a seat support for an office chair or the like.
  • a seat plate receiving the seat cushion, which is pivotally connected to a base body in the region of its front end, holding devices on the base body for fastening a chair column, a backrest and an angled backrest support connected to the backrest, an approximately horizontally running lower section of the backrest support is pivotally connected to the base body and a gas spring is provided which is connected to the base body on the one hand and the backrest support on the other hand and which resets the backrest support.
  • Such a seat support is known for example from DE-OS 26 30 820.
  • Such seat carriers generally have the requirement that they should enable the person sitting on them to move as ergonomically as possible, with an inclination adjustment of the seat when the working position of the user changes an anatomically correct, corresponding tracking of the backrest should be connected.
  • the object of the invention is to design a seat support of the type mentioned at the outset in such a way that it can be realized using the fewest possible, inexpensive to produce individual parts while ensuring good seating comfort and high stability of the overall construction.
  • the backrest support is connected to the base body via a sliding shoe forming a pivot bearing which is slidable along a certain spell section in a cam recess of the base body, the seat plate slidably resting on the horizontal section of the backrest support.
  • This construction makes it possible to superimpose a translational movement on the pure pivoting movement of the backrest, which is coordinated with a pivoting movement of the seat support, which makes it possible to advantageously coordinate the sequence of movements of the seat plate and backrest.
  • the cam recess is delimited by two circular sections, the associated center of the circle being below the cam recess, advantageously at approximately the level of the articulation axis of the gas spring on the base body.
  • the center of the circle is advantageously offset somewhat to the rear against the articulation axis of the gas spring on the base body.
  • this geometry also enables a very compact structure of the entire arrangement.
  • the rear and front rear wall of the cam recess can serve as a stop for the sliding movement.
  • the seat plate itself is advantageously designed as a largely perforation-free, one-piece metal plate reinforced by rib bulges.
  • the base body is essentially formed from a single injection molded part. It consists of a bottom shell which is closed at the bottom and from which longitudinal and transverse stiffening or support ribs extend. Accordingly, the connection of the seat plate and base body forms a closed arrangement, which protects the interior from dust and ensures an aesthetic appearance.
  • a fastening cone for a chair column can be provided.
  • the cone area can be reinforced with a metal insert.
  • the longitudinal ribs of the base body run towards the holding cone and, accordingly, maximum reinforcement is achieved in this area.
  • the backrest support can also be produced as a one-piece injection molded part made of plastic.
  • the sliding block inserted into the cam recess consists of a plastic with which low coefficients of friction can be achieved, e.g. Polyamide.
  • a seat support shown in the drawing comprises a one-piece molded plastic body 1, a seat plate 2 consisting of a one-piece metal plate on which an only indicated seat cushion 3 is placed, an angled backrest support 4 with a substantially vertical section 5 and a substantially horizontally extending section 6 and a backrest 7 fastened to the vertical section 5 of the backrest support 4.
  • a pair of gas springs 9 which are pivoted about an axis 8 and which are pivotably connected to the horizontal section 6 of the backrest support 4 about a pivot axis 10 (see FIG. 1) are pivotably mounted.
  • the base body 1 furthermore has a fastening cone 12 reinforced by a metal insert 11 for a corresponding section 13 of a conventional chair column 14 with a base not shown.
  • a cam recess 17 (see FIGS. 1 and 4) is integrally molded therewith, in which a sliding shoe 18 (see FIG. 1 and 4) that only partially, for example half, fills it and has a corresponding outer contour.
  • Fig. 1 is slidably disposed.
  • the cam recess 17 has two boundary walls 19, 20, which are designed in the form of a circular section and run concentrically to one another, the associated center point M being somewhat behind and below the pivot axis 8 of the gas spring 9.
  • the front and rear end walls 21 and 22 of the cam recess 17 serve as a stop for the slide shoe 18, which is shown in two different extreme positions in FIG. 1.
  • a pivot bearing is formed in the slide shoe 18 by means of a pivot bearing pin 23, the front end of the horizontal section 6 of the backrest support 4 being articulated on the pivot bearing pin 23. Accordingly, the backrest support 4 can be pivoted about the axis of the pivot bearing pin 23 and at the same time is displaceable along a circular path when the seat plate 2 is pivoted. This displaceability is due to the fact that the seat plate 2 has a bulge 24, the underside of this bulge 24 on the horizontal section 6 of the backrest support 4 is sliding.
  • the gas spring 9 can push up the rear end of the seat plate 2 by engaging the horizontal section 6 of the backrest support 4 and pushing it upward, forward.
  • These pure pivoting movements are superimposed on a sliding movement of the front end of the horizontal section 6 of the backrest support 4 with the aid of the sliding shoe 18 in the cam recess 17, which together with the sliding support of the seat plate 2 ensures that the oblique gas spring 9 and the pivot bearing 16 is not created a rigid three-point arrangement.
  • the base body 1 consists of a one-piece injection molded plastic part with a closed base pan 25, from which a plurality of transverse ribs 26 and longitudinal ribs 27 extend, the longitudinal ribs 27 being V-shaped on the cone 12 for the chair column 14 and accordingly reinforce this area.
  • the chair plate 2 consists essentially of a one-piece sheet metal part with a plurality of embossed reinforcing ribs 28. Furthermore, it can be seen in FIG. 2 how the horizontal section 6 of the backrest support 4 engages by means of a bolt 23 in a sliding shoe (not visible in FIG. 2) and can be displaced by the path S in this way.
  • Armrests 30 (shown broken off in FIG. 2) are also fastened to the seat plate 2 in a conventional manner by means of screws 29.

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

Description

Die Erfindung richtet sich auf einen Sitzträger für einen Bürostuhl od.dgl. umfassend eine das Sitzpolster aufnehmende Sitzplatte, welche mit einem Grundkörper im Bereich von dessen Vorderende schwenkbar verbunden ist, Halteeinrichtungen an dem Grundkörper zur Befestigung einer Stuhlsäule, eine Rückenlehne und einen mit der Rückenlehne verbundenen, gewinkelten Rückenlehnenträger, wobei ein etwa horizontal verlaufender unterer Abschnitt des Rückenlehnenträgers mit dem Grundkörper schwenkbar verbunden ist und eine mit dem Grundkörper einerseits und dem Rückenlehnenträger andererseits verbundene, den Rückenlehnenträger zurückstellende Gasfeder vorgesehen ist.The invention is directed to a seat support for an office chair or the like. comprising a seat plate receiving the seat cushion, which is pivotally connected to a base body in the region of its front end, holding devices on the base body for fastening a chair column, a backrest and an angled backrest support connected to the backrest, an approximately horizontally running lower section of the backrest support is pivotally connected to the base body and a gas spring is provided which is connected to the base body on the one hand and the backrest support on the other hand and which resets the backrest support.

Ein derartiger Sitzträger ist beispielsweise aus der DE-OS 26 30 820 bekannt.Such a seat support is known for example from DE-OS 26 30 820.

An solche Sitzträger wird grundsätzlich die Anforderung gestellt, daß sie eine möglichst ergonomische Bewegung einer daraufsitzenden Person ermöglichen sollen, wobei mit einer Neigungsverstellung des Sitzes bei einer Veränderung der Arbeitsposition des Benutzers eine anatomisch richtige, korrespondierende Nachführung der Rückenlehne verbunden sein soll.Such seat carriers generally have the requirement that they should enable the person sitting on them to move as ergonomically as possible, with an inclination adjustment of the seat when the working position of the user changes an anatomically correct, corresponding tracking of the backrest should be connected.

Zur Lösung dieses Problems sind unterschiedliche, teilweise sehr aufwendige Konstruktionen entwickelt worden, die teilweise auch die Verwendung einer Mehrzahl unterschiedlicher, in verschiedenen Neigungen angeordneter Federn zur Bewirkung einer sicheren Rückstellung erforderlich machen.To solve this problem, different, sometimes very complex constructions have been developed, some of which also require the use of a plurality of different springs arranged in different inclinations to effect a safe return.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, einen Sitzträger der eingangs genannten Art so auszugestalten, daß er unter Verwendung möglichst weniger, kostengünstig herstellbarer Einzelteile unter Gewährleistung eines guten Sitzkomforts und einer hohen Stabilität der Gesamtkonstruktion realisierbar ist.Proceeding from this, the object of the invention is to design a seat support of the type mentioned at the outset in such a way that it can be realized using the fewest possible, inexpensive to produce individual parts while ensuring good seating comfort and high stability of the overall construction.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Rückenlehnenträger mit dem Grundkörper über einen ein Schwenklager bildenden Gleitschuh verbunden ist, der längs eines bestimmten Bannabschnitts in einer Nockenausnehmung des Grundkörpers gleitend verschiebbar ist, wobei die Sitzplatte auf dem horizontalen Abschnitt des Rückenlehnenträgers gleitend aufliegt.This object is achieved in that the backrest support is connected to the base body via a sliding shoe forming a pivot bearing which is slidable along a certain spell section in a cam recess of the base body, the seat plate slidably resting on the horizontal section of the backrest support.

Durch diese Konstruktion wird es möglich, der reinen Schwenkbewegung der Rückenlehne, die koordiniert mit einer Schwenkbewegung des Sitzträgers erfolgt, eine translatorische Bewegung zu überlagern, die es ermöglicht, den Bewegungsablauf von Sitzplatte und Rückenlehne vorteilhaft aufeinander abzustimmen.This construction makes it possible to superimpose a translational movement on the pure pivoting movement of the backrest, which is coordinated with a pivoting movement of the seat support, which makes it possible to advantageously coordinate the sequence of movements of the seat plate and backrest.

Günstigerweise ist dabei vorgesehen, daß die Nockenausnehmung durch zwei Kreisabschnitte begrenzt wird, wobei der zugehörige Kreismittelpunkt unterhalb der Nockenausnehmung liegt, und zwar günstigerweise etwa in Höhe der Anlenkachse der Gasfeder am Grundkörper. Dabei ist der Kreismittelpunkt mit Vorteil gegen die Anlenkachse der Gasfeder am Grundkörper etwas nach hinten versetzt.It is advantageously provided that the cam recess is delimited by two circular sections, the associated center of the circle being below the cam recess, advantageously at approximately the level of the articulation axis of the gas spring on the base body. The center of the circle is advantageously offset somewhat to the rear against the articulation axis of the gas spring on the base body.

Diese Geometrie ermöglicht neben einem vorteilhaften Bewegungsablauf auch einen sehr kompakten Aufbau der gesamten Anordnung.In addition to an advantageous movement sequence, this geometry also enables a very compact structure of the entire arrangement.

Die hintere und vordere Rückwand der Nockenausnehmung kann jeweils als Anschlag für die Gleitbewegung dienen.The rear and front rear wall of the cam recess can serve as a stop for the sliding movement.

Die Sitzplatte selbst ist günstigerweise als weitgehend durchbrechungsfreie, einstückige, durch Rippenausbauchungen verstärkte Metallplatte ausgebildet.The seat plate itself is advantageously designed as a largely perforation-free, one-piece metal plate reinforced by rib bulges.

In gleicher Weise ist der Grundkörper im wesentlichen aus einem einzigen Spritzgießteil geformt. Er besteht aus einer nach unten abgeschlossenen Bodenschale, von welcher sich längs- und querverlaufende Versteifungs- bzw. Tragerippen wegerstrecken. Dementsprechend bildet die Verbindung von Sitzplatte und Grundkörper eine geschlossene Anordnung, welche das Innere vor Verstauben schützt und ein ästhetisches Erscheinungsbild gewährleistet.In the same way, the base body is essentially formed from a single injection molded part. It consists of a bottom shell which is closed at the bottom and from which longitudinal and transverse stiffening or support ribs extend. Accordingly, the connection of the seat plate and base body forms a closed arrangement, which protects the interior from dust and ensures an aesthetic appearance.

Einstückig mit dem Grundkörper ausgeformt kann ein Befestigungskonus für eine Stuhlsäule vorgesehen sein.Formed in one piece with the base body, a fastening cone for a chair column can be provided.

Gegebenenfalls kann der Konusbereich noch durch eine Metalleinlage verstärkt werden.If necessary, the cone area can be reinforced with a metal insert.

Dabei kann vorgesehen sein, daß die Längsrippen des Grundkörpers auf den Haltekonus zulaufen und dementsprechend in diesem Bereich eine maximale Verstärkung erreicht wird.It can be provided that the longitudinal ribs of the base body run towards the holding cone and, accordingly, maximum reinforcement is achieved in this area.

Bei der erfindungsgemäßen Konstruktion läßt sich auch der Rückenlehnenträger als einstückiges Spritzgießteil aus Kunststoff herstellen.In the construction according to the invention, the backrest support can also be produced as a one-piece injection molded part made of plastic.

Der in die Nockenausnehmung eingesetzte Gleitschuh besteht aus einem Kunststoff, mit welchem sich niedrige Reibungskoeffizienten realisieren lassen, z.B. Polyamid.The sliding block inserted into the cam recess consists of a plastic with which low coefficients of friction can be achieved, e.g. Polyamide.

Nachfolgend wird die Erfindung anhand eines bevorzugten Ausführungsbeispieles in Verbindung mit der Zeichnung näher beschrieben. Dabei zeigen

Fig. 1
einen Schnitt durch einen erfindungsgemäßen Sitzträger, wobei gestrichelt eine zweite Sitzposition eingezeichnet ist,
Fig. 2
eine Ansicht eines erfindungsgemäßen Sitzträgers von unten,
Fig. 3
eine Ansicht des Grundkörpers von oben und
Fig. 4
einen Schnitt durch den Grundkörper im Bereich einer Nockenausnehmung.
The invention is described in more detail below on the basis of a preferred exemplary embodiment in conjunction with the drawing. Show
Fig. 1
2 shows a section through a seat support according to the invention, a second sitting position being shown in broken lines
Fig. 2
a view of a seat support according to the invention from below,
Fig. 3
a view of the body from above and
Fig. 4
a section through the base body in the region of a cam recess.

Ein in der Zeichnung dargestellter Sitzträger umfaßt einen aus Kunststoff einstückig gespritzten Grundkörper 1, eine aus einer einstückigen Metallplatte bestehende Sitzplatte 2, auf welche ein nur angedeutetes Sitzpolster 3 aufgelegt ist, einen gewinkelten Rückenlehnenträger 4 mit einem im wesentlichen vertikal verlaufenden Abschnitt 5 und einem im wesentlichen horizontal verlaufenden Abschnitt 6 sowie eine an dem vertikalen Abschnitt 5 des Rückenlehnenträgers 4 befestigte Rückenlehne 7.A seat support shown in the drawing comprises a one-piece molded plastic body 1, a seat plate 2 consisting of a one-piece metal plate on which an only indicated seat cushion 3 is placed, an angled backrest support 4 with a substantially vertical section 5 and a substantially horizontally extending section 6 and a backrest 7 fastened to the vertical section 5 of the backrest support 4.

An dem Grundkörper 1 ist um eine Achse 8 schwenkbar gelagert ein Paar von schräg nach hinten oben verlaufenden Gasfedern 9 angelenkt, welche um eine Schwenkachse 10 (vgl. Fig. 1) schwenkbar mit dem horizontalen Abschnitt 6 des Rückenlehnenträgers 4 verbunden sind.On the base body 1, a pair of gas springs 9 which are pivoted about an axis 8 and which are pivotably connected to the horizontal section 6 of the backrest support 4 about a pivot axis 10 (see FIG. 1) are pivotably mounted.

Der Grundkörper 1 weist weiterhin einen durch eine Metalleinlage 11 verstärkten Befestigungskonus 12 für einen korrespondierenden Abschnitt 13 einer herkömmlichen Stuhlsäule 14 mit einem nicht dargestellten Fußkreuz auf.The base body 1 furthermore has a fastening cone 12 reinforced by a metal insert 11 for a corresponding section 13 of a conventional chair column 14 with a base not shown.

Von der Sitzplatte 2 erstrecken sich an deren vorderem Ende vier Laschen 15 nach unten, welche über je zwei Schwenklager 16 schwenkbar mit dem Grundkörper 1 verbunden sind.From the seat plate 2, four tabs 15 extend downward at their front end, which are pivotably connected to the base body 1 via two pivot bearings 16 each.

In dem Grundkörper 1 ist einstückig mit diesem gespritzt eine Nockenausnehmung 17 (vgl. Fig. 1 und 4) ausgebildet, in welcher ein diese nur teilweise, beispielsweise zur Hälfte, ausfüllender, eine korrespondierende Außenkontur aufweisender Gleitschuh 18 (vgl. Fig. 1) gleitend angeordnet ist. Die Nockenausnehmung 17 weist zwei Begrenzungswände 19, 20 auf, welche kreisabschnittsförmig ausgebildet sind und konzentrisch zueinander verlaufen, wobei der zugehörige Kreismittelpunkt M etwas hinter und unterhalb der Schwenkachse 8 der Gasfeder 9 liegt.In the base body 1, a cam recess 17 (see FIGS. 1 and 4) is integrally molded therewith, in which a sliding shoe 18 (see FIG. 1 and 4) that only partially, for example half, fills it and has a corresponding outer contour. Fig. 1) is slidably disposed. The cam recess 17 has two boundary walls 19, 20, which are designed in the form of a circular section and run concentrically to one another, the associated center point M being somewhat behind and below the pivot axis 8 of the gas spring 9.

Die vordere und hintere Stirnwand 21 bzw. 22 der Nockenausnehmung 17 dienen als Anschlag für den Gleitschuh 18, der in Fig. 1 in zwei unterschiedlichen Extrempositionen eingezeichnet ist.The front and rear end walls 21 and 22 of the cam recess 17 serve as a stop for the slide shoe 18, which is shown in two different extreme positions in FIG. 1.

In dem Gleitschuh 18 ist mittels eines Schwenklagerbolzens 23 ein Schwenklager ausgebildet, wobei an dem Schwenklagerbolzen 23 das vordere Ende des horizontalen Abschnitts 6 des Rückenlehnenträgers 4 angelenkt ist. Dementsprechend ist der Rückenlehnenträger 4 um die Achse des Schwenklagerbolzens 23 verschwenkbar und gleichzeitig bei einer Schwenkbewegung der Sitzplatte 2 längs einer kreisabschnittsförmigen Bahn verschiebbar Diese Verschiebbarkeit ist dadurch bedingt, daß die Sitzplatte 2 eine Ausbauchung 24 aufweist, wobei die Unterseite dieser Ausbauchung 24 auf dem horizontalen Abschnitt 6 des Rückenlehnenträgers 4 gleitend aufliegt.A pivot bearing is formed in the slide shoe 18 by means of a pivot bearing pin 23, the front end of the horizontal section 6 of the backrest support 4 being articulated on the pivot bearing pin 23. Accordingly, the backrest support 4 can be pivoted about the axis of the pivot bearing pin 23 and at the same time is displaceable along a circular path when the seat plate 2 is pivoted.This displaceability is due to the fact that the seat plate 2 has a bulge 24, the underside of this bulge 24 on the horizontal section 6 of the backrest support 4 is sliding.

Aus dem Vorstehenden in Verbindung mit Fig. 1 wird deutlich, daß wenn eine auf dem Sitzträger sitzende Person ihr Gewicht von der in Fig. 1 durchgezogen eingezeichneten, zurückgelehnten Position nach vorne verlagert, die Sitzplatte 2 um die Schwenkachse des Schwenklagers 16 verschwenkt, die Gasfeder 9 nun nicht mehr von dem Gewicht der Person beaufschlagt wird.From the above in connection with Fig. 1 it is clear that when a person sitting on the seat support shifts their weight forward from the drawn in Fig. 1, reclined position, the seat plate 2 pivots about the pivot axis of the pivot bearing 16, the gas spring 9 is no longer subjected to the weight of the person.

Dementsprechend kann die Gasfeder 9 das hintere Ende der Sitzplatte 2 hochdrücken , indem sie an dem horizontalen Abschnitt 6 des Rückenlehnenträgers 4 angreift und diesen nach oben, vorne drückt. Diesen reinen Schwenkbewegungen ist eine Gleitbewegung des vorderen Endes des horizontalen Abschnitts 6 des Rückenlehnenträgers 4 mit Hilfe des Gleitschuhs 18 in der Nockenausnehmung 17 überlagert, welche zusammen mit dem gleitenden Aufliegen der Sitzplatte 2 dafür sorgt, daß durch die beiden Schwenkachsen der schräg verlaufenden Gasfeder 9 und das Schwenklager 16 nicht eine starre Dreipunkt-Anordnung geschaffen wird.Accordingly, the gas spring 9 can push up the rear end of the seat plate 2 by engaging the horizontal section 6 of the backrest support 4 and pushing it upward, forward. These pure pivoting movements are superimposed on a sliding movement of the front end of the horizontal section 6 of the backrest support 4 with the aid of the sliding shoe 18 in the cam recess 17, which together with the sliding support of the seat plate 2 ensures that the oblique gas spring 9 and the pivot bearing 16 is not created a rigid three-point arrangement.

Wie aus Fig. 3 und 4 gut zu erkennen ist, besteht der Grundkörper 1 aus einem einstückigen Kunststoffspritzteil mit einer geschlossenen Bodenwanne 25, von der sich eine Mehrzahl von Querrippen 26 und Längsrippen 27 wegerstreckt, wobei die Längsrippen 27 V-förmig auf den Konus 12 für die Stuhlsäule 14 zulaufen und dementsprechend diesen Bereich besonders verstärken.3 and 4 can be clearly seen, the base body 1 consists of a one-piece injection molded plastic part with a closed base pan 25, from which a plurality of transverse ribs 26 and longitudinal ribs 27 extend, the longitudinal ribs 27 being V-shaped on the cone 12 for the chair column 14 and accordingly reinforce this area.

Aus Fig. 2 wird deutlich, daß die Stuhlplatte 2 im wesentlichen aus einem einstückigen Blechteil mit einer Mehrzahl von eingeprägten Verstärkungsrippen 28 besteht. Weiterhin ist in Fig. 2 erkennbar, wie der horizontale Abschnitt 6 des Rückenlehnenträgers 4 mittels eines Bolzens 23 in einen in Fig. 2 nicht sichtbaren Gleitschuh eingreift und auf diese Weise um den Weg S verschiebbar ist.From Fig. 2 it is clear that the chair plate 2 consists essentially of a one-piece sheet metal part with a plurality of embossed reinforcing ribs 28. Furthermore, it can be seen in FIG. 2 how the horizontal section 6 of the backrest support 4 engages by means of a bolt 23 in a sliding shoe (not visible in FIG. 2) and can be displaced by the path S in this way.

An der Sitzplatte 2 sind auch in herkömmlicher Weise mittels Schrauben 29 Armlehnen 30 (in Fig. 2 abgebrochen eingezeichnet) befestigt.Armrests 30 (shown broken off in FIG. 2) are also fastened to the seat plate 2 in a conventional manner by means of screws 29.

Claims (11)

  1. Seat support for an office chair or the like, comprising a seat plate (2) accommodating the seat upholstery (3) and pivotably joined to a base body (1) in the vicinity of the latter's front end, retaining devices on the base body for mounting a chair column (14), a back (7) and a bent back support (4) joined to the back, a lower section (6) of the back support extending approximately horizontally being pivotably joined to the base body, and a gas spring (9) being given which is joined to the base body on the one hand and to the back support on the other hand and which restores the back support, characterized in that the back support (4) is joined to the base body (1) by way of a sliding block (18) forming a pivoting hinge (23) and being slidably displaceable along a certain path in a cam recess (17) of the base body (1), the seat plate (2) resting slidably on the horizontal section (6) of the back support (4).
  2. Seat support according to claim 1, characterized in that the cam recess (17) is defined by two segments of a circle (19, 20), the associated center (M) of the circle being located under the cam recess (17).
  3. Seat support according to claim 2, characterized in that the center (M) of the circle is about level with the axis of articulation (8) of the gas spring (9) on the base body (1).
  4. Seat support according to claim 3, characterized in that the center (M) of the circle is slightly displaced to the back referred to the axis of articulation (8) of the gas spring (9) on the base body (1).
  5. Seat support according to claim 1, characterized in that the rear and the front back wall (21 and 22, respectively) of the cam recess (17) serve as stops for the sliding motion.
  6. Seat support according to claim 1, characterized in that the seat plate (2) is a substantially uninterrupted plate of metal made in one piece and reinforced by convexities in the form of ribs.
  7. Seat support according to claim 1, characterized in that the base body (1) consists substantially of a single injection-molded unit.
  8. Seat support according to claim 7, characterized in that a mounting cone (12) for a chair column (14) is provided to be formed in one piece with the base body (1).
  9. Seat support according to claim 7, characterized in that the base body (1) has a plurality of vertical ribs (27) extending from the portion of the front edge of the seat towards the mounting portion of the chair column (14).
  10. Seat support according to claim 1, characterized in that the back support (4) is an injection-molded unit made in one piece of plastics.
  11. Seat support according to claim 1, characterized in that the sliding block (18) consists of polyamide or of polyarylamide, respectively.
EP91120386A 1990-11-29 1991-11-28 Seat support for an office chair Expired - Lifetime EP0488278B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4038059 1990-11-29
DE4038059A DE4038059A1 (en) 1990-11-29 1990-11-29 SEAT CARRIER FOR AN OFFICE CHAIR OR THE LIKE
DK199200697A DK174269B1 (en) 1990-11-29 1992-05-26 Seat holder for an office chair or the like
FI922457A FI89001C (en) 1990-11-29 1992-05-27 SITSSTOED FOER KONTORSSTOL ELLER LIKNANDE

Publications (2)

Publication Number Publication Date
EP0488278A1 EP0488278A1 (en) 1992-06-03
EP0488278B1 true EP0488278B1 (en) 1994-08-24

Family

ID=42315627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91120386A Expired - Lifetime EP0488278B1 (en) 1990-11-29 1991-11-28 Seat support for an office chair

Country Status (4)

Country Link
EP (1) EP0488278B1 (en)
DE (2) DE4038059A1 (en)
DK (1) DK174269B1 (en)
FI (1) FI89001C (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
US6386634B1 (en) 1992-06-15 2002-05-14 Herman Miller, Inc. Office chair

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DE4312113C1 (en) * 1993-04-14 1994-10-27 Mauser Waldeck Ag Seating
DE4327373C2 (en) * 1993-08-14 1997-07-17 Girsberger Holding Ag Chair, especially office chair
DE4341070A1 (en) * 1993-12-02 1995-06-08 Hansen Fritz As Upholstered seat for an office chair
US5547661A (en) * 1994-02-22 1996-08-20 Helene Curtis, Inc. Antiperspirant deodorant compositions
DE10122946C1 (en) * 2001-05-11 2003-01-30 Armin Sander Chair, especially office chair
US20070252419A1 (en) * 2004-09-03 2007-11-01 Yukie Takahashi Seating Mechanism and Chair
IT1393795B1 (en) * 2009-04-23 2012-05-08 Imarc Spa PROCEDURE FOR CARRYING OUT A CONNECTION STRUCTURE BETWEEN PLAN AND SEAT OF OFFICE CHAIRS AND STRUCTURE OBTAINED BY PROCEEDINGS.
DE202009014380U1 (en) * 2009-10-23 2010-04-01 GLÖCKL, Josef standing seat
CN109100388B (en) * 2018-08-10 2021-05-25 北京卫星环境工程研究所 Infrared heating cage installation device suitable for large umbrella-shaped antenna thermal vacuum test

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FR2045120A5 (en) * 1969-06-03 1971-02-26 Dupart Jean
DE2925520A1 (en) * 1979-06-25 1981-01-15 Mauser Waldeck Gmbh Swivel chair with adjustable tilt and height - has support column, arm, and sprung telescoping pistons
GB2125284B (en) * 1982-08-16 1985-08-07 Metalstand Co Adjustable chairs
JPS60117742U (en) * 1984-01-18 1985-08-09 株式会社岡村製作所 chair recliner
DE8511034U1 (en) * 1985-04-16 1985-06-05 Steifensand Sitzmöbel- und Tischfabrik Inh.: F. Martin Steifensand, 8501 Wendelstein Seating furniture in the form of a chair or armchair, in particular for office purposes
DE3634055A1 (en) * 1986-10-07 1988-04-14 Inaba Seisakusho Ltd SEAT FURNITURE
DE3700447A1 (en) * 1987-01-09 1988-07-21 Vogt Bueromoebel SEAT FURNITURE
DE3916474A1 (en) * 1989-05-20 1990-11-22 Roeder Soehne Sitzmoebelfab CHAIR, ESPECIALLY WORK OR OFFICE CHAIR

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6386634B1 (en) 1992-06-15 2002-05-14 Herman Miller, Inc. Office chair

Also Published As

Publication number Publication date
FI89001B (en) 1993-04-30
DK69792D0 (en) 1992-05-26
DE4038059A1 (en) 1992-06-04
DE59102629D1 (en) 1994-09-29
DK69792A (en) 1993-11-27
FI922457A0 (en) 1992-05-27
FI89001C (en) 1993-08-10
EP0488278A1 (en) 1992-06-03
DK174269B1 (en) 2002-10-28

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