EP2508103B1 - Seat for a chair - Google Patents

Seat for a chair Download PDF

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Publication number
EP2508103B1
EP2508103B1 EP12001978.1A EP12001978A EP2508103B1 EP 2508103 B1 EP2508103 B1 EP 2508103B1 EP 12001978 A EP12001978 A EP 12001978A EP 2508103 B1 EP2508103 B1 EP 2508103B1
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EP
European Patent Office
Prior art keywords
seat
support
chair
cover
seat support
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EP12001978.1A
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German (de)
French (fr)
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EP2508103A1 (en
Inventor
Hermann Bock
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Bock 1 GmbH and Co KG
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Bock 1 GmbH and Co KG
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Publication of EP2508103A1 publication Critical patent/EP2508103A1/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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/16—Seats made of wooden, plastics, or metal sheet material; Panel seats
    • 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
    • A47C7/02—Seat parts
    • A47C7/28—Seat parts with tensioned springs, e.g. of flat type
    • A47C7/282—Seat parts with tensioned springs, e.g. of flat type with mesh-like supports, e.g. elastomeric membranes

Definitions

  • the invention relates to a seat with a seat support and a seat support and a chair with such a seat.
  • the seat cushion is therefore usually made of a provided with a foam pad plate mounted on a trough-shaped seat support: is.
  • An elastic deflection of the foam pad carrying plate is not desirable.
  • this plate should be as rigid as possible.
  • the trough-shaped seat support which is also referred to as a seat shell, has in its interior a rib structure on which the upholstery plate fastened on the seat support is supported.
  • net seats In addition to conventional upholstered seat covers chairs are known as so-called net seats. These are usually those chairs that also have a mesh back.
  • the seat cushion is formed in these cases by a textile fabric or knitted fabric, which is clamped in a clamping frame.
  • the use of such net seats allows especially by the ventilation taking place thereby a particularly high seating comfort.
  • a so-called membrane covering is used, in which, for example, a flexible, semitransparent polyamide membrane is used.
  • a tenter or other network carrier frame can be placed on selected construction, often expensive lower parts konstrukzions nieth.
  • the support arms of the net frame are also an integral part of a seat mechanism in the seat base, so that a seat depth adjustment, ie a displacement of the seat support relative to the seat mechanism, can be realized only with great effort.
  • Seat support with a trough-shaped seat shell for fastening a seat support, in which the seat shell provides a receiving space for temporarily receiving a flexible seat surface of the seat support are in EP1226773A1 and US20C7 / 0102987A1 described.
  • US Pat. No. 2,845,998 describes a chair with a cushioned seat surface, the pad of which is placed on an apertured plate for venting purposes.
  • US 2010/0181807 A1 is described a folding chair with an elastic seat, which is provided with openings.
  • An object of the present invention is to provide a structurally particularly simple, inexpensive to produce chair with high comfort while avoiding the disadvantages of conventional net seats.
  • the seat support of the seat according to the invention has a trough-shaped seat shell, which is designed for fastening a seat support. Inside the seat shell a receiving space is provided for receiving at least parts of a flexible seat surface of the seat cushion. The seat or parts of the seat are absorbed by the receiving space only temporarily, namely when a load on the seat by a user. In other words, the flexible seat moves into the trough-shaped seat when a user sits down on the chair.
  • the seat cushion comprises a resilient plate provided with a plurality of apertures in the region of the seat surface.
  • the seat support to be fastened to such a seat support is inventively formed in one piece and self-supporting and has a flexible seat. It is essential that the flexibility of the seat cushion is not effected by a textile fabric or knitted fabric or a membrane. Since the seat cushion has none of these elements, no tenter or the like is needed.
  • the flexibility of the seat and thus the flexibility of the seat support according to the invention is achieved in that the seat support in the region of the seat has a plurality of openings or openings. The design and arrangement of the openings, together with the properties of the material used, determines the bending properties of the seat cushion.
  • a seat having a seat support or a seat cushion, as described above, is structurally particularly simple and can be produced inexpensively, without having to sacrifice the desired seating comfort. The same applies to a chair with such a seat.
  • the invention is characterized by the fact that the seat is combined by the use of a seat as a universal shell with all possible, even very inexpensive seat bases and seat mechanisms.
  • a seat depth adjustment is very easy because this, as in conventional constructions, the seat is in a simple manner relative to the seat mechanism displaced.
  • An office chair 1 usually comprises a seat base 3 arranged on a chair column 2 and a seat 4 connected to the seat base 3.
  • the seat base 3 usually comprises a seat mechanism, for example a so-called synchronous mechanism, which for a coupled relative movement of seat 4 and backrest 5 provides mutually bringing kinematics.
  • the seat 4 comprises a seat support 6 and a seat support 7 connected to the seat support 6.
  • the seat support 6 can also be designed as part of the seat mechanism according to its function.
  • the backrest support connected to the base support of the seat mechanism and / or the seat support 6 is not shown in the figures.
  • a receiving space 9 is provided which extends substantially over the entire seat 8.
  • the receiving space 9 is bounded by the side walls 11 of the seat shell 8.
  • slots 13 for seat depth adjustment receptacles 14 for the armrests and other functional elements are integrated, but this so that the recording function of the receiving space 9 is not affected for the seat 17.
  • the receiving space 9 can also be provided without affecting the recording function, individual stiffening ribs 15 or the like, so that the required basic stiffness of the seat 8 is ensured.
  • the seat 8 is open at the top. On the seat 8 of the seat support 6, the seat support 7 is attached.
  • the self-supporting and integrally running seat support 7 rests on the seat shell edge 16 and covers the seat 8 from above.
  • the seat surface 17 of the seat support 7, which is defined in more detail below, is located completely above the receiving space 9 in the assembled state.
  • the receiving space 9 is designed such that an undisturbed penetration of the seat cushion 7 is ensured in the receiving space 9 up to a defined penetration depth. This penetration depth results from the maximum possible deflection of the seat surface 17 of the seat support 7 and, depending on the structural design of the seat 17 and the material used, for example, 25 mm.
  • the seat support 7 consists essentially of an elastic plate 18, which is preferably made of a thermoplastically processable plastic material. In the Fig. 2 to 5 the seat cover 7 is only half formed. The opposite, not shown here part of the seat cover 7 corresponds in mirror image to the pictured part.
  • the elastic plate 18 is provided in the region of the seat 17 with a plurality of openings or openings 19. In other words, that region of the elastic plate 18 which has such apertures 19 defines the seat surface 17 of the seat support 7.
  • the seat surface 17 extends close to the edge 22 of the seat support 7 on all four sides.
  • the edge 22 of the seat support 7 is free of openings 19.
  • the elastic plate 18 is made by injection molding and made in one piece. Therefore, a particularly inexpensive production of the seat cushion 7 is possible.
  • the diamond-shaped, closely adjacent to each other and regularly arranged openings 19 by connecting webs 21 limited and separated from each other.
  • the selection of the material used for the elastic plate 18 and the arrangement of the apertures 19 and the connecting webs 21 is preferably such that the connecting webs 21 in the longitudinal direction 23, 24 are substantially non-stretchable.
  • the connecting webs 21 in the longitudinal direction 23, 24 are substantially non-stretchable.
  • the openings 19 in the region of the seat 17 are designed and arranged such that a plurality of meander-shaped Weg lakeeinzel Suitee 27 result, which is transverse to the from the seat cushion trailing edge 28 to the Seat support front edge 29 extending seat longitudinal direction 31 are arranged.
  • Adjacent Weg lakeeinzel Suitee 27 are connected to each other via connecting arms 32, wherein the connecting arms 32 are arranged offset in the seat surface single area longitudinal direction 33 to each other, to ensure the desired movement characteristics of the seat 17.
  • the self-supporting, no textile fabric or knitted fabric and thus frameless executable seat cover 7 is connected to the seat shell 8 by means of a the increased loads of a bending plate 18 grown complementary to each other formed connecting elements.
  • a bending plate 18 grown complementary to each other formed connecting elements.
  • a particularly secure connection is made possible by a non-illustrated in the figures continuous positive engagement, which is preferably prepared by a arranged on the underside of the seat cushion edge 22 circumferential rib engages provided in the seat pan edge 16 circumferential groove.
  • continuous positive engagement which is preferably prepared by a arranged on the underside of the seat cushion edge 22 circumferential rib engages provided in the seat pan edge 16 circumferential groove.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)

Description

Die Erfindung betrifft einen Sitz mit einem Sitzträger und einer Sitzauflage sowie einen Stuhl mit einem solchen Sitz.The invention relates to a seat with a seat support and a seat support and a chair with such a seat.

Bei Stühlen, insbesondere Bürostühlen, ist häufig eine Polsterung des Sitzes gewünscht. Die Sitzauflage besteht daher zumeist aus einer mit einer Schaumstoffpolsterung versehenen Platte, die auf einem wannenförmigen Sitzträger befestigt: ist. Ein elastisches Durchbiegen der das Schaumstoffpolster tragenden Platte ist nicht erwünscht. Im Gegenteil soll diese Platte möglichst biegesteif sein. Um ein Durchbiegen in jedem Fall zu vermeiden, weist der wannenförmige Sitzträger, der auch als Sitzschale bezeichnet wird, in seinem Inneren eine Rippenstruktur auf, auf der sich die auf dem Sitzträger befestigte Polsterplatte abstützt.For chairs, especially office chairs, a padding of the seat is often desired. The seat cushion is therefore usually made of a provided with a foam pad plate mounted on a trough-shaped seat support: is. An elastic deflection of the foam pad carrying plate is not desirable. On the contrary, this plate should be as rigid as possible. In order to avoid sagging in any case, the trough-shaped seat support, which is also referred to as a seat shell, has in its interior a rib structure on which the upholstery plate fastened on the seat support is supported.

Neben herkömmlichen gepolsterten Sitzauflagen sind Stühle mit sogenannten Netzsitzen bekannt. Dabei handelt es sich zumeist um solche Stühle, die auch einen Netzrücken aufweisen. Die Sitzauflage wird in diesen Fällen durch ein textiles Gewebe oder Gewirke gebildet, das in einem Spannrahmen eingespannt ist. Die Verwendung derartiger Netzsitze ermöglicht vor allem durch die dadurch stattfindenden Belüftung einen besonders hohen Sitzkomfort. Bei Rückenlehnen kommt zudem bei besonders hochwertigen Stühlen eine sogenannte Membranbespannung zum Einsatz, bei der beispielsweise eine flexible, halbtransparente Polyamid-Membran verwendet wird.In addition to conventional upholstered seat covers chairs are known as so-called net seats. These are usually those chairs that also have a mesh back. The seat cushion is formed in these cases by a textile fabric or knitted fabric, which is clamped in a clamping frame. The use of such net seats allows especially by the ventilation taking place thereby a particularly high seating comfort. In the case of backrests, in the case of particularly high-quality chairs, a so-called membrane covering is used, in which, for example, a flexible, semitransparent polyamide membrane is used.

Während herkömmliche Polstersitze ohne weiteres auf verschiedene Sitzunterteile montiert werden können, kann ein Spannrahmen oder ein anderer Netzträgerrahmen konstrukzionsbedingt nur auf ausgewählte, oftmals teuere Unterteile aufgesetzt werden. Oftmals sind die Trägerarme des Netzrahmens auch fester Bestandteil einer Sitzmechanik im Sitzunterbau, so daß eine Sitztiefenverstellung, also ein Verschieben der Sitzauflage relativ zu der Sitzmechanik, nur mit sehr großem Aufwand realisierbar ist.While conventional upholstered seats can be easily mounted on different seat bases, a tenter or other network carrier frame can be placed on selected construction, often expensive lower parts konstrukzionsbedingt. Often, the support arms of the net frame are also an integral part of a seat mechanism in the seat base, so that a seat depth adjustment, ie a displacement of the seat support relative to the seat mechanism, can be realized only with great effort.

Sitzträger mit einer wannenförmigen Sitzschale zur Befestigung einer Sitzauflage, bei denen die Sitzschale einen Aufnahmeraum zur vorübergehenden Aufnahme einer flexiblen Sitzfläche der Sitzauflage bereitstellt, sind in EP1226773A1 und US20C7/0102987A1 beschrieben. US 2 845 998 A beschreibt einen Stthl mit einer gepolsterten Sitzfläche, deren Polster auf einer zum Zweck der Belüftung mit Öffnungen versehenen Platte plaziert ist. In US 2010/0181807 A1 ist ein Klappstuhl mit einer elastischen Sitzfläche beschrieben, die mit Durchbrüchen versehen ist.Seat support with a trough-shaped seat shell for fastening a seat support, in which the seat shell provides a receiving space for temporarily receiving a flexible seat surface of the seat support are in EP1226773A1 and US20C7 / 0102987A1 described. US Pat. No. 2,845,998 describes a chair with a cushioned seat surface, the pad of which is placed on an apertured plate for venting purposes. In US 2010/0181807 A1 is described a folding chair with an elastic seat, which is provided with openings.

Eine Aufgabe der vorliegenden Erfindung ist es, unter Vermeidung der Nachteile herkömmlicher Netzsitze einen konstruktiv besonders einfachen, preiswert herstellbaren Stuhl mit hohem Sitzkomfort bereitzustellen.An object of the present invention is to provide a structurally particularly simple, inexpensive to produce chair with high comfort while avoiding the disadvantages of conventional net seats.

Diese Aufgabe wird durch einen Sitz nach Anspruch 1 bzw. einen Stuhl nach Anspruch 6 gelöst.This object is achieved by a seat according to claim 1 and a chair according to claim 6.

Der Sitzträger des erfindungsgemäßen Sitzes weist eine wannenförmige Sitzschale auf, die zur Befestigung einer Sitzauflage ausgebildet ist. Im Inneren der Sitzschale ist ein Aufnahmeraum vorgesehen zur Aufnahme zumindest von Teilen einer flexiblen Sitzfläche der Sitzauflage. Die Sitzfläche oder Teile der Sitzfläche werden dabei von dem Aufnahmeraum nur zeitweise aufgenommen, nämlich bei einer Belastung der Sitzfläche durch einen Benutzer. Mit anderen Worten bewegt sich die flexible Sitzfläche in die wannenförmige Sitzschale hinein, wenn sich ein Benutzer auf den Stuhl setzt.The seat support of the seat according to the invention has a trough-shaped seat shell, which is designed for fastening a seat support. Inside the seat shell a receiving space is provided for receiving at least parts of a flexible seat surface of the seat cushion. The seat or parts of the seat are absorbed by the receiving space only temporarily, namely when a load on the seat by a user. In other words, the flexible seat moves into the trough-shaped seat when a user sits down on the chair.

Erfindungsgemäß umfaßt die Sitzauflage eine im Bereich der Sitzfläche mit einer Vielzahl von Durchbrüchen versehene elastische Platte. Die an einem solchen Sitzträger zu befestigende Sitzauflage ist erfindungsgemäß einteilig und selbsttragend ausgebildet und weist eine flexible Sitzfläche auf. Wesentlich ist dabei, daß die Flexibilität der Sitzauflage nicht durch ein textiles Gewebe oder Gewirke oder eine Membran bewirkt wird. Da die Sitzauflage keines dieser Elemente aufweist, wird auch kein Spannrahmen oder dergleichen benötigt. Die Flexibilität der Sitzfläche und damit die Biegbarkeit der Sitzauflage wird erfindungsgemäß dadurch erreicht, daß die Sitzauflage im Bereich der Sitzfläche eine Vielzahl von Öffnungen oder Durchbrüchen aufweist. Die Ausführung und Anordnung der Öffnungen bestimmt, zusammen mit den Eigenschaften des verwendeten Materials, die Biegeeigenschaften der Sitzauflage.According to the invention, the seat cushion comprises a resilient plate provided with a plurality of apertures in the region of the seat surface. The seat support to be fastened to such a seat support is inventively formed in one piece and self-supporting and has a flexible seat. It is essential that the flexibility of the seat cushion is not effected by a textile fabric or knitted fabric or a membrane. Since the seat cushion has none of these elements, no tenter or the like is needed. The flexibility of the seat and thus the flexibility of the seat support according to the invention is achieved in that the seat support in the region of the seat has a plurality of openings or openings. The design and arrangement of the openings, together with the properties of the material used, determines the bending properties of the seat cushion.

Ein Sitz, der einen Sitzträger bzw. eine Sitzauflage, wie oben beschrieben, aufweist, ist konstruktiv besonders einfach aufgebaut und läßt sich preiswert herstellen, ohne daß auf den gewünschten Sitzkomfort verzichtet werden muß. Gleiches trifft zu auf einen Stuhl mit einem solchen Sitz.A seat having a seat support or a seat cushion, as described above, is structurally particularly simple and can be produced inexpensively, without having to sacrifice the desired seating comfort. The same applies to a chair with such a seat.

Gegenüber anderen Netzsitzen mit wannenlosen Oberteilen zeichnet sich die Erfindung dadurch aus, daß der Sitz durch die Verwendung einer Sitzschale als universelles Oberteil mit allen möglichen, auch sehr preiswerten Sitzunterteilen bzw. Sitzmechaniken kombinierbar ist. Zugleich ist, trotz Verwendung einer flexiblen Sitzfläche, eine Sitztiefenverstellung sehr einfach möglich, da hierfür, wie bei herkömmlichen Konstruktionen, die Sitzschale auf einfache Art und Weise relativ zu der Sitzmechanik verschiebbar ist.Compared to other net seats with tubless tops, the invention is characterized by the fact that the seat is combined by the use of a seat as a universal shell with all possible, even very inexpensive seat bases and seat mechanisms. At the same time, despite the use of a flexible seat, a seat depth adjustment is very easy because this, as in conventional constructions, the seat is in a simple manner relative to the seat mechanism displaced.

Vorteilhafte Ausführungsformen der Erfindung werden im Zusammenhang mit einem Ausführungsbeispiel nachfolgend anhand der Zeichnungen näher erläutert. Hierbei zeigen:

Fig. 1
eine Darstellung der Baugruppen eines Bürostuhls,
Fig. 2 bis 4
eine Draufsicht sowie zwei perspektivische Ansichten einer Sitzauflage, die an einem Sitzträger eines erfindungsgemäßen Sitzes befestigt ist,
Fig. 5
eine Draufsicht auf eine weitere Sitzauflage, die an einem Sitzträger eines erfindungsgemäßen Sitzes befestigt ist.
Advantageous embodiments of the invention will be explained in connection with an embodiment below with reference to the drawings. Hereby show:
Fig. 1
a representation of the assemblies of an office chair,
Fig. 2 to 4
a top view and two perspective views of a seat pad which is attached to a seat support of a seat according to the invention,
Fig. 5
a plan view of another seat pad which is attached to a seat support of a seat according to the invention.

Sämtliche Figuren zeigen die Erfindung lediglich schematisch und mit ihren wesentlichen Bestandteilen. Gleiche Bezugszeichen entsprechen dabei Elementen gleicher oder vergleichbarer Funktion.All figures show the invention only schematically and with its essential components. The same reference numerals correspond to elements of the same or comparable function.

Ein Bürostuhl 1 umfaßt üblicherweise einen auf einer Stuhlsäule 2 angeordneten Sitzunterbau 3 und einen mit dem Sitzunterbau 3 verbundenen Sitz 4. Der Sitzunterbau 3 umfaßt in der Regel eine Sitzmechanik, beispielsweise eine sogenannte Synchronmechanik, die für eine miteinander gekoppelte, eine bestimmte Relativbewegung von Sitz 4 und Rückenlehne 5 zueinander mit sich bringende Kinematik sorgt. Der Sitz 4 umfaßt einen Sitzträger 6 und eine mit dem Sitzträger 6 verbundene Sitzauflage 7. Der Sitzträger 6 kann dabei entsprechend seiner Funktion auch als ein Teil der Sitzmechanik ausgebildet sein. Der mit dem Basisträger der Sitzmechanik und/oder dem Sitzträger 6 verbundene Rückenlehnenträger ist in den Figuren nicht abgebildet.An office chair 1 usually comprises a seat base 3 arranged on a chair column 2 and a seat 4 connected to the seat base 3. The seat base 3 usually comprises a seat mechanism, for example a so-called synchronous mechanism, which for a coupled relative movement of seat 4 and backrest 5 provides mutually bringing kinematics. The seat 4 comprises a seat support 6 and a seat support 7 connected to the seat support 6. In this case, the seat support 6 can also be designed as part of the seat mechanism according to its function. The backrest support connected to the base support of the seat mechanism and / or the seat support 6 is not shown in the figures.

Der Sitzträger 6, der eine zur Befestigung der Sitzauflage 7 ausgebildete, wannenförmige Sitzschale 8 aufweist, ist auf bekannte Art und Weise mit wenigstens einem weiteren Bauteil des Sitzunterbaus 3, in der Regel mit dem Basisträger der Sitzmechanik, verbunden.The seat support 6, which has a trough-shaped seat shell 8 designed to fasten the seat support 7, is open known manner with at least one other component of the seat base 3, usually connected to the base support of the seat mechanism.

Im Inneren der Sitzschale 8 ist ein Aufnahmeraum 9 vorgesehen, der sich im wesentliche über die gesamte Sitzschale 8 erstreckt. Mit anderen Worten wird der Aufnahmeraum 9 von den Seitenwänden 11 der Sitzschale 8 begrenzt. In der Unterseite 12 der Sitzschale 8 sind Langlöcher 13 zur Sitztiefenverstellung, Aufnahmen 14 für die Armlehnen sowie weitere Funktionselemente integriert, dies jedoch so, daß die Aufnahmefunktion des Aufnahmeraumes 9 für die Sitzfläche 17 nicht beeinträchtigt wird. In dem Aufnahmeraum 9 können zudem, ohne eine Beeinträchtigung der Aufnahmefunktion, einzelne Versteifungsrippen 15 oder dergleichen vorgesehen sein, so daß die geforderte Grundsteifigkeit der Sitzschale 8 gewährleistet ist. Insgesamt ergibt sich jedoch durch den Wegfall der Vielzahl der Auflagerippen gegenüber herkömmlichen Sitzschalen eine deutliche Materialeinsparung, die sich in geringeren Herstellungskosten niederschlägt.Inside the seat 8, a receiving space 9 is provided which extends substantially over the entire seat 8. In other words, the receiving space 9 is bounded by the side walls 11 of the seat shell 8. In the bottom 12 of the seat 8 slots 13 for seat depth adjustment, receptacles 14 for the armrests and other functional elements are integrated, but this so that the recording function of the receiving space 9 is not affected for the seat 17. In the receiving space 9 can also be provided without affecting the recording function, individual stiffening ribs 15 or the like, so that the required basic stiffness of the seat 8 is ensured. Overall, however, results from the elimination of the plurality of support ribs over conventional seats a significant material savings, which is reflected in lower production costs.

Die Sitzschale 8 ist nach oben hin offen ausgeführt. Auf der Sitzschale 8 des Sitzträgers 6 ist die Sitzauflage 7 befestigt. Die selbsttragende und einteilig ausgeführte Sitzauflage 7 liegt dabei auf dem Sitzschalenrand 16 auf und deckt die Sitzschale 8 nach oben hin ab. Die weiter unten genauer definierte Sitzfläche 17 der Sitzauflage 7 befindet sich im montierten Zustand vollständig oberhalb des Aufnahmeraumes 9.The seat 8 is open at the top. On the seat 8 of the seat support 6, the seat support 7 is attached. The self-supporting and integrally running seat support 7 rests on the seat shell edge 16 and covers the seat 8 from above. The seat surface 17 of the seat support 7, which is defined in more detail below, is located completely above the receiving space 9 in the assembled state.

Setzt sich ein Benutzer auf den Stuhl 1, so bewegt sich die Sitzfläche 17 oder zumindest Teile hiervon in den unterhalb der Sitzauflage 7 angeordneten Aufnahmeraum 9 der Sitzschale 8 hinein. Dabei ist der Aufnahmeraum 9 derart ausgeführt, daß ein ungestörtes Eindringen der Sitzauflage 7 in den Aufnahmeraum 9 bis zu einer definierten Eindringtiefe sichergestellt ist. Diese Eindringtiefe ergibt sich dabei aus der maximal möglichen Durchbiegung der Sitzfläche 17 der Sitzauflage 7 und beträgt in Abhängigkeit von der konstruktiven Ausgestaltung der Sitzfläche 17 und dem verwendeten Material beispielsweise 25 mm.If a user sits down on the chair 1, then the seat 17 or at least parts of it move in the below the seat support 7 arranged receiving space 9 of the seat 8 inside. In this case, the receiving space 9 is designed such that an undisturbed penetration of the seat cushion 7 is ensured in the receiving space 9 up to a defined penetration depth. This penetration depth results from the maximum possible deflection of the seat surface 17 of the seat support 7 and, depending on the structural design of the seat 17 and the material used, for example, 25 mm.

Die Sitzauflage 7 besteht im wesentlichen aus einer elastischen Platte 18, die vorzugsweise aus einem thermoplastisch verarbeitbaren Kunststoffmaterial hergestellt ist. In den Fig. 2 bis 5 ist die Sitzauflage 7 lediglich zur Hälfte angebildet. Der gegenüberliegende, hier nicht abgebildete Teil der Sitzauflage 7 entspricht spiegelbildlich dem abgebildeten Teil.The seat support 7 consists essentially of an elastic plate 18, which is preferably made of a thermoplastically processable plastic material. In the Fig. 2 to 5 the seat cover 7 is only half formed. The opposite, not shown here part of the seat cover 7 corresponds in mirror image to the pictured part.

Die elastische Platte 18 ist im Bereich der Sitzfläche 17 mit einer Vielzahl von Öffnungen oder Durchbrüchen 19 versehen. Anders ausgedrückt definiert derjenige Bereich der elastischen Platte 18, der solche Durchbrüche 19 aufweist, die Sitzfläche 17 der Sitzauflage 7. Die Sitzfläche 17 reicht an allen vier Seiten nahe an den Rand 22 der Sitzauflage 7 heran. Der Rand 22 der Sitzauflage 7 ist frei von Durchbrüchen 19. Die elastische Platte 18 ist mit einem Spritzgießverfahren hergestellt und einteilig ausgeführt. Daher ist eine besonders preiswerte Herstellung der Sitzauflage 7 möglich.The elastic plate 18 is provided in the region of the seat 17 with a plurality of openings or openings 19. In other words, that region of the elastic plate 18 which has such apertures 19 defines the seat surface 17 of the seat support 7. The seat surface 17 extends close to the edge 22 of the seat support 7 on all four sides. The edge 22 of the seat support 7 is free of openings 19. The elastic plate 18 is made by injection molding and made in one piece. Therefore, a particularly inexpensive production of the seat cushion 7 is possible.

Bei dem in den Fig. 2 bis 4 dargestellten Ausführungsbeispiel werden die rautenförmigen, eng zueinander benachbart und regelmäßig angeordneten Durchbrüche 19 durch Verbindungsstege 21 begrenzt und voneinander abgegrenzt. Die Auswahl des für die elastische Platte 18 verwendeten Materials sowie die Anordnung der Durchbrüche 19 bzw. der Verbindungsstege 21 erfolgt vorzugsweise derart, daß die Verbindungsstege 21 in deren Längsrichtung 23, 24 im wesentlichen nicht dehnbar sind. Mit anderen Worten kommt es bei einer Belastung der Sitzfläche 17 durch einen Benutzer des Bürostuhls 1 lediglich zu einer elastischen Biegung der Verbindungsstege 21. Im Gegensatz zu herkömmlichen Netzsitzen aus textilen Geweben oder Gewirken, deren Fasern sich in Längsrichtung dehnen und damit bei einer Sitzbelastung ihre Länge ändern, erfährt die hier beschriebene elastische Platte 18 somit lediglich eine Biegung in Belastungsrichtung 25. Wird die elastische Platte 18 entlastet, nimmt sie selbsttätig ihre Ausgangslage ein.In the in the Fig. 2 to 4 illustrated embodiment, the diamond-shaped, closely adjacent to each other and regularly arranged openings 19 by connecting webs 21 limited and separated from each other. The selection of the material used for the elastic plate 18 and the arrangement of the apertures 19 and the connecting webs 21 is preferably such that the connecting webs 21 in the longitudinal direction 23, 24 are substantially non-stretchable. In other words, when the seat 17 is loaded by a user of the office chair 1, only an elastic bending of the connecting webs 21 occurs. In contrast to conventional mesh seats made of textile fabrics or knitted fabrics, the fibers stretch in the longitudinal direction and thus their length during a seat load change, the elastic plate 18 described here thus experiences only a bend in the loading direction 25. If the elastic plate 18 is relieved, it automatically assumes its starting position.

Bei dem in Fig. 5 abgebildeten Ausführungsbeispiel sind die Durchbrüche 19 im Bereich der Sitzfläche 17 derart ausgeführt und angeordnet, daß sich mehrere mäanderförmige Sitzflächeneinzelbereiche 27 ergeben, die quer zu der sich von der Sitzauflagenhinterkante 28 zu der
Sitzauflagenvorderkante 29 verlaufenden Sitzlängsrichtung 31 angeordnet sind. Benachbarte Sitzflächeneinzelbereiche 27 sind dabei über Verbindungsarme 32 miteinander verbunden,
wobei die Verbindungsarme 32 in Sitzflächeneinzelbereichlängsrichtung 33 versetzt zueinander angeordnet sind, um die gewünschten Bewegungseigenschaften der Sitzfläche 17 sicherzustellen. Bei einer Belastung der Sitzfläche 17 durch einen Benutzer des Bürostuhls 1 längen sich die belasteten Sitzflächeneinzelbereiche 27 in Sitzflächeneinzelbereichlängsrichtung 33. Diese Längenänderung beruht jedoch nicht auf einer Dehnung der Sitzflächeneinzelbereiche 27, sondern erfolgt aufgrund der Biegung der betreffenden Sitzflächeneinzelbereiche 27 in
Belastungsrichtung 25. Bei einer Entlastung der elastischen Platte 18 bewegen sich die Sitzflächeneinzelbereiche 27 wegen der werkstoffeigenen Elastizität selbsttätig wieder in ihre Ausgangslage zurück.At the in Fig. 5 Illustrated embodiment, the openings 19 in the region of the seat 17 are designed and arranged such that a plurality of meander-shaped Sitzflächeneinzelbereiche 27 result, which is transverse to the from the seat cushion trailing edge 28 to the
Seat support front edge 29 extending seat longitudinal direction 31 are arranged. Adjacent Sitzflächeneinzelbereiche 27 are connected to each other via connecting arms 32,
wherein the connecting arms 32 are arranged offset in the seat surface single area longitudinal direction 33 to each other, to ensure the desired movement characteristics of the seat 17. When a load on the seat 17 by a user of the office chair 1, the loaded Sitzflächeneinzelbereiche 27 lengthen in Sitzflächeneinzelbereichlängsrichtung 33. However, this change in length is not based on an expansion of the Sitzflächeneinzelbereiche 27, but is due to the bending of the respective Sitzflächeneinzelbereiche 27 in
Loading direction 25. When a relief of the elastic plate 18, the Sitzflächeneinzelbereiche 27 move back due to the inherent elasticity automatically back to their original position.

Die selbsttragende, keine textilen Gewebe oder Gewirke aufweisende und damit rahmenlos ausführbare Sitzauflage 7 ist mit der Sitzschale 8 mit Hilfe einer den erhöhten Belastungen einer sich durchbiegenden Platte 18 gewachsenen, zueinander komplementär ausgebildeten Verbindungselementen verbunden. Hierfür kommen an der Unterseite des Sitzauflagenrandes 22 beabstandet zueinander angeordnete, sich in Richtung Sitzträger 6 erstreckende Verbindungsdome (nicht dargestellt) zum Einsatz, die bei der Montage von Sitzauflage 7 und Sitzträger 6 formschlüssig in dem Sitzschalenrand 16 vorgesehene, entsprechend ausgebildete Aufnahmeöffnungen 26 eingreifen.The self-supporting, no textile fabric or knitted fabric and thus frameless executable seat cover 7 is connected to the seat shell 8 by means of a the increased loads of a bending plate 18 grown complementary to each other formed connecting elements. For this purpose, at the bottom of the seat cushion edge 22 spaced apart, in the direction of seat support 6 extending Verbindungsdome (not shown) are used, which engage in the assembly of seat cushion 7 and seat support 6 form fit provided in the seat shell edge 16, correspondingly formed receiving openings 26.

Eine besonders sichere Verbindung wird durch einen in den Figuren nicht dargestellten durchgehenden Formschluß ermöglicht, der vorzugsweise dadurch hergestellt wird, daß eine an der Unterseite des Sitzauflagenrandes 22 angeordnete umlaufende Rippe in im Sitzschalenrand 16 vorgesehene umlaufende Nut eingreift. Damit wird eine durchgehende, ununterbrochene formschlüssige Verbindung der beiden Bauteile 6, 7 sichergestellt.A particularly secure connection is made possible by a non-illustrated in the figures continuous positive engagement, which is preferably prepared by a arranged on the underside of the seat cushion edge 22 circumferential rib engages provided in the seat pan edge 16 circumferential groove. For a continuous, uninterrupted positive connection of the two components 6, 7 is ensured.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Stuhl, BürostuhlChair, office chair
22
Stuhlsäulechair column
33
Sitzunterbauseat substructure
44
SitzSeat
55
Rückenlehnebackrest
66
Sitzträgerseat support
77
Sitzauflageseat cushion
88th
Sitzschaleseat
99
Aufnahmeraumaccommodation space
1010
(frei)(free)
1111
SeitenwandSide wall
1212
SitzschalenunterseiteSeat bottom
1313
LanglochLong hole
1414
Aufnahmeadmission
1515
Versteifungsrippestiffening rib
1616
SitzschalenrandSeat edge
1717
Sitzflächeseat
1818
Platteplate
1919
Durchbruchbreakthrough
2020
(frei)(free)
2121
Verbindungsstegconnecting web
2222
SitzauflagenrandCushion edge
2323
Längsrichtunglongitudinal direction
2424
Längsrichtunglongitudinal direction
2525
Belastungsrichtungload direction
2626
Aufnahmeöffnungreceiving opening
2727
SitzflächeneinzelbereichSeat single area
2828
SitzhinterkanteSeat rear edge
2929
SitzvorderkanteFront seat edge
3030
(frei)(free)
3131
SitzlängsrichtungSeat longitudinal direction
3232
Verbindungsarmconnecting arm
3333
SitzflächeneinzelbereichlängsrichtungSeat single area longitudinally

Claims (6)

  1. Seat (4) for a chair (1), having a seat support (6) and/or having a seat cover (7) connected to a seat support (6), wherein the seat support (6) has a tub-shaped seat shell (8) for fastening a seat cover (7), wherein the seat shell (8) provides an accommodating space (9) for temporarily accommodating a flexible seat surface (17) of the seat cover (7) or parts thereof, wherein the seat cover (7) consists essentially of an elastic panel (18), wherein a region of the elastic panel (18) is provided with a multiplicity of through-passages (19), and wherein said region defines the seat surface (17) of the seat cover (7).
  2. Seat (4) according to Claim 1, characterized in that the accommodating space (9) of the seat support (6) extends essentially over the entire seat shell (8).
  3. Seat (4) according to Claim 1 or 2, characterized in that the seat cover (7) is self-supporting.
  4. Seat (4) according to one of Claims 1 to 3, characterized in that the seat cover (7) is in one piece.
  5. Seat (4) according to one of Claims 1 to 4, characterized in that the seat support (6) and the seat cover (7) have complementary designed connecting elements (26).
  6. Chair (1), in particular office chair, having a seat substructure (3), which preferably has a seat mechanism, and having a seat (4) according to one of Claims 1 to 5 connected to the seat substructure (3).
EP12001978.1A 2011-04-08 2012-03-21 Seat for a chair Active EP2508103B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011016476A DE102011016476A1 (en) 2011-04-08 2011-04-08 Seat support for a chair

Publications (2)

Publication Number Publication Date
EP2508103A1 EP2508103A1 (en) 2012-10-10
EP2508103B1 true EP2508103B1 (en) 2014-06-18

Family

ID=45932094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12001978.1A Active EP2508103B1 (en) 2011-04-08 2012-03-21 Seat for a chair

Country Status (2)

Country Link
EP (1) EP2508103B1 (en)
DE (1) DE102011016476A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013003083A1 (en) * 2013-02-23 2014-08-28 Klöber GmbH Synchronous mechanism for office chairs with auto-adaptive restoring force coupled to the user's center of gravity

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2845998A (en) * 1956-04-27 1958-08-05 Robert J Estabrook Ventilated chair seats
US20100181807A1 (en) * 2008-12-24 2010-07-22 Smith Richard D Mesh chair with open-end hoop

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT12890B (en) 1902-10-02 1903-08-10 Krupp Gmbh
DE693553C (en) * 1937-01-27 1940-07-13 Dunlop Gummi Cie Akt Ges Deuts Seat support frame for upholstered seats or loungers
ATE12890T1 (en) * 1980-05-22 1985-05-15 Inst Nat Sante Rech Med INDIVIDUAL ANTI-BENDING PILLOWS AND MATTRESSES AND METHOD OF MANUFACTURE.
DE4435062A1 (en) * 1994-09-30 1996-04-04 Evolvente Atelier Fuer Gestalt Seat for parks and bus shelters
US5975634A (en) * 1997-10-24 1999-11-02 Steelcase Development Inc. Chair including novel back construction
CA2368923C (en) * 2001-01-25 2006-03-14 Jsj Seating Company Texas, L.P. Office chair
US20070102987A1 (en) * 2005-11-04 2007-05-10 Su-Ming Chen Meshed seat cushion for chair
DE202008007290U1 (en) * 2008-05-30 2008-08-28 Design Ballendat Gmbh Chair with height-adjustable seat element

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2845998A (en) * 1956-04-27 1958-08-05 Robert J Estabrook Ventilated chair seats
US20100181807A1 (en) * 2008-12-24 2010-07-22 Smith Richard D Mesh chair with open-end hoop

Also Published As

Publication number Publication date
DE102011016476A1 (en) 2012-10-11
EP2508103A1 (en) 2012-10-10

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