EP1325693B1 - Chair - Google Patents

Chair Download PDF

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Publication number
EP1325693B1
EP1325693B1 EP02028450A EP02028450A EP1325693B1 EP 1325693 B1 EP1325693 B1 EP 1325693B1 EP 02028450 A EP02028450 A EP 02028450A EP 02028450 A EP02028450 A EP 02028450A EP 1325693 B1 EP1325693 B1 EP 1325693B1
Authority
EP
European Patent Office
Prior art keywords
seat
support
chair according
chair
panel
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
EP02028450A
Other languages
German (de)
French (fr)
Other versions
EP1325693A2 (en
EP1325693A3 (en
Inventor
Roland Zünd
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.)
Friedrich W Dauphin GmbH and Co
Dauphin Entwicklungs und Beteiligungs GmbH
Original Assignee
Friedrich W Dauphin GmbH and Co
Dauphin Entwicklungs und Beteiligungs GmbH
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Filing date
Publication date
Application filed by Friedrich W Dauphin GmbH and Co, Dauphin Entwicklungs und Beteiligungs GmbH filed Critical Friedrich W Dauphin GmbH and Co
Publication of EP1325693A2 publication Critical patent/EP1325693A2/en
Publication of EP1325693A3 publication Critical patent/EP1325693A3/en
Application granted granted Critical
Publication of EP1325693B1 publication Critical patent/EP1325693B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/023—Reclining or easy chairs having independently-adjustable supporting parts the parts being horizontally-adjustable seats ; Expandable seats or the like, e.g. seats with horizontally adjustable parts
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—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
    • 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
    • A47C7/024—Seat parts with double 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
    • A47C7/029—Seat parts of non-adjustable shape adapted to a user contour or ergonomic seating positions
    • 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
    • A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions

Definitions

  • the invention relates to a chair, in particular an office chair.
  • An office chair is e.g. from document EP-A-0 105 955.
  • the invention has for its object to provide a novel office chair that better meets the physiological needs of the user.
  • the object is solved by the features of claim 1.
  • the core is to provide a seat plate which is displaceable relative to the seat carrier longitudinally displaceable against a spring force.
  • FIG. 1 A schematically illustrated in Figure 1 chair 1, in particular an office chair, has a pedestal 2, which is supported by rollers 3 relative to the ground.
  • a height-adjustable chair column 4 is attached to the upper end of a seat support 5 is releasably attached, on which in turn a seat plate 6 is attached with a padded seat 7.
  • a substantially upwardly extending backrest support 8 is attached to which a padded backrest 9 is attached.
  • a headrest support 10 is attached, to which a headrest 11 is attached.
  • the seat support 5 has a front seat support part 12 and a pivotable about this at a pivot axis 13 rear seat support part 14.
  • the seat support part 12 consists of a substantially horizontally extending support 15 with a vertically extending conical receptacle 16, in which the upper end of the chair column 4 is fixed.
  • an obliquely upwardly extending support arm 17 is attached.
  • the chair has a horizontal, from the backrest 9 to the seat plate 6 facing front-direction 18, which corresponds to the viewing direction of a user of the chair 1.
  • the free end 20 is above the support 15.
  • the rear Seat support part 14 pivotally connected via a shaft 21.
  • the pivot axis 13 extends horizontally.
  • the seat carrier part 14 has, adjacent to the shaft 21, a perpendicular to the direction 18 extending horizontally arranged, extending substantially across the width of the seat plate 6 cross member 22.
  • two arms 24 are mounted as components of the seat support member 14, which extend perpendicularly from the cross member 22 obliquely rearwardly above and include a horizontal angle B with an inclination angle a.
  • the inclination angle a is variable by the pivoting of the seat support part 14 about the pivot axis 13, but is usually greater than 0 °.
  • the typical range of the inclination angle a is between 20 ° and 30 °.
  • the arms 24 merge into two substantially vertically extending struts 25 which form the backrest support 8.
  • the lateral edge 26 of the seat plate 6 protrudes in the lateral direction slightly, but only slightly above the lateral edge of the arms 24, as shown in Figure 2.
  • On the upper side of the arms 24 one, in each case also inclined at an angle of inclination a with respect to the horizontal, is raised towards the backrest 9 and is provided with a planar sliding surface 27.
  • the cross member 22 has two tabs 28 projecting in the direction 18, through which the shaft 21 is guided and via which the rear seat support part 14 is articulated on the front seat support part 12.
  • a downwardly projecting lever 29 is also centrally attached, at the lower end via a hinge 30, a force accumulator 31 is articulated in the form of a length-adjustable, operable from the outside gas spring.
  • a counter force is generated, for. B. when the user of the chair 1 leans with the backrest 9 to the rear.
  • the rear seat support part 14 and the backrest support 8 are thus opposite to a coming from the power storage 31 force over the front Seat support part 12 pivotable.
  • the chair 1 is constructed mirror-symmetrically with respect to the plane of symmetry A.
  • the seat plate 6 is supported relative to the front seat support part 12 via a front support-guide unit 32.
  • a front support-guide unit 32 At the front upper end of the support arm 17 is a horizontally extending on both sides extending horizontally extending support tube 33 which has a central longitudinal axis 34 which extends horizontally and parallel to the pivot axis 13 and the axis of the joint 30.
  • the support tube 33 is arranged centrally below the seat plate 6 and extends approximately over three quarters of the width of the seat plate 6.
  • the support tube 33 has in the region of its two outer ends annular cylindrical portions 35 on which a bearing sleeve 36 about the axis 34 is pivotable ,
  • the two bearing sleeves 36 each have on their upper side an upwardly projecting pin 37 with a radially projecting head 38, wherein the pin 37 is guided in an associated slot 39 in the seat plate 6, ie in a slot guide.
  • the slot 39 has at its end lying in the direction 18 a keyhole opening 40 through which the head 38 can be pushed for mounting or dismounting the seat plate 6.
  • the width of the head 38 is greater than the width of the slot 39, so that the seat plate 6 relative to the bearing sleeve 36 along the direction 18 is slidably guided, but can not be lifted, as long as the head 38 is not in the keyhole opening 40 is.
  • Parallel to the slot 39 are on both sides downwardly projecting slides 41, which consist as the seat plate 6 made of plastic, which are supported on a parallel sliding support plate 42, which is connected to the sleeve 36 and on this is supported.
  • the plate 42 protrudes in the direction 18 and opposite to this on the sleeve 36 and supports the seat plate 6, so that even with a heavy user of the chair 1 a kinking the front portion of the seat plate 6 is prevented.
  • the plate 42 is, as well as the seat plate 6 in this area, slightly curved upwards, ie, relative to the axis 34 convex.
  • the seat plate 6 consists of a front seat plate part 43, which is supported against the front support guide unit 32, and a rear seat plate part 44, which has a rear support guide unit 45 relative to the rear seat support part 14th is supported.
  • the seat plate parts 43 and 45 are connected to each other via a hinge 46.
  • the hinge 46 is a living hinge.
  • the parts 43 and 44 and the hinge 46 are integrally formed of plastic.
  • the front part 43 is, as already mentioned, curved upwards.
  • the rear part 44 is flat.
  • the seat plate 6 is surrounded along its circumference with a substantially rectangular in plan view, bead-shaped edge 47 having a circumferential groove 48 on its inside.
  • the rear support-guide unit 45 has roller-shaped rollers 49 which are rotatably mounted in corresponding bearing recesses 50 on the underside of the seat plate part 44.
  • rollers 49 There are two rollers 49 arranged one behind the other, which are each supported on a sliding surface 27 of the two arms 24 and improve the sliding of the seat plate 6 on the sliding surfaces 27.
  • Between the arms 24 are arranged adjacent to these, parallel to this extending guide pin 51 is secured to the cross member 22.
  • the cross member 22 has for this purpose bores 52, through which a tapered portion 53 is guided, which is welded to the cross member 22.
  • two bearing blocks 54 are fixed, which are guided on the guide pin 51 slidably.
  • the guide pins 51 have at their ends a radially projecting, screwed into this screw 55 to slipping of the bearing block 54 of the guide pin 51 to prevent.
  • a spring element in the form of two coil springs 57 is provided, between which a sleeve 58 is arranged.
  • the sleeve 58 prevents that upon compression of the coil springs 57, a part of the coil spring on the guide pin 51 scrapes and causes corresponding noise and scratched it.
  • the angle of inclination a of the guide pins 51 relative to the horizontal B corresponds to the angle of inclination a of the sliding surfaces 27 relative to the horizontal B.
  • the operation of the chair 1 will be described when the position of the backrest is locked. If a person sits on the seat 7 and thus on the seat plate 6, a force is exerted on the rear seat plate part 44 from above. Accordingly, the part 44 is moved on the inclined plane formed by the sliding surfaces 27 in Figure 4 left down, at the same time by the bearing block 54, the coil springs 57 are compressed on the guide pin 51 and a counterforce is generated. By the displacement of the rear seat plate part 44, the front seat plate part 43 is displaced along the direction 18 on the support guide unit 32. The displacement of the height of the joint 46 is compensated by a pivoting of the bearing sleeve 36 about the axis 34, so that there is no jamming in the slot guide.
  • the displacement of the seat plate 6 is completed when the force exerted by the coil springs 57 counter force of gravity the user's force component along the sliding surface 27 including the frictional forces acting in the system.
  • the displaceability of the seat correspond to the weight and the center of gravity of the user has many advantages. In a larger and thus usually heavier person, the seat plate 6 is pushed further forward, so that the thighs of the user are better supported. In addition, there is an automatic adjustment of the parts 43 and 44 of the seat plate 6 with respect to the center of gravity of the user, so that it is supported mainly by the sloping rear seat plate member 44 automatically in an upright seating position. If the backrest 9 is not locked and the user pivots this and thus changes the angle of inclination a of the sliding surface 27, a new adjustment of the optimum seat plate position automatically takes place by the displaceable seat plate 6.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Hydrogenated Pyridines (AREA)

Abstract

The office chair has a base frame (2) on which a seat squab (6) is mounted via a support (5). The support has a backrest facing rear support-guide (45) opposite which the squab is supported and on which the squab is adjustable between horizontal and angled positions against a spring. The support has a frontal carrier-guide (32) opposite which the squab is supported.

Description

Die Erfindung betrifft einen Stuhl, insbesondere einen Bürostuhl.The invention relates to a chair, in particular an office chair.

Es sind verschiedenartige Bürostuhle bekannt. Die einfachsten weisen eine relativ zur Stuhlsäule ortsfeste Sitzfläche auf. Aufwendigere Bürostühle weisen eine Einrichtung zur Neigungsverstellung der Sitzfläche auf.There are various types of office chairs known. The simplest have a relative to the chair column stationary seat. More elaborate office chairs have a device for tilt adjustment of the seat.

Ein Bürostuhl ist z.B. aus Dokument EP-A-0 105 955 bekannt.An office chair is e.g. from document EP-A-0 105 955.

Der Erfindung liegt die Aufgabe zugrunde, eine neuartigen Bürostuhl zu schaffen, der den physiologischen Bedürfnissen der Benutzer besser entspricht.The invention has for its object to provide a novel office chair that better meets the physiological needs of the user.

Die Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Der Kern besteht darin, eine Sitzplatte vorzusehen, die relativ zum Sitzträger längs verschiebbar gegen eine Federkraft verschiebbar ist.The object is solved by the features of claim 1. The core is to provide a seat plate which is displaceable relative to the seat carrier longitudinally displaceable against a spring force.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous embodiments of the invention will become apparent from the dependent claims.

Zusätzliche Vorteile und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispieles anhand der Zeichnung. Es zeigen:

  • Fig. 1 eine schematische Darstellung eines erfindungsgemäßen Stuhls,
  • Fig. 2 eine Ansicht von unten des Stuhles gemäß Fig. 1,
  • Fig. 3 einen Querschnitt gemäß der Schnittlinie III-III in Fig. 2,
  • Fig. 4 einen Querschnitt gemäß der Schnittlinie IV-IV in Fig. 2, und
  • Fig. 5 eine Ansicht gemäß dem Sichtpfeil V in Fig. 3.
Additional advantages and details of the invention will become apparent from the following description of an embodiment with reference to the drawing. Show it:
  • 1 is a schematic representation of a chair according to the invention,
  • 2 is a bottom view of the chair of FIG. 1,
  • 3 shows a cross section along the section line III-III in Fig. 2,
  • Fig. 4 shows a cross section along the section line IV-IV in Fig. 2, and
  • 5 is a view according to the viewing arrow V in Fig. 3rd

Ein in Figur 1 schematisch dargestellter Stuhl 1, insbesondere ein Bürostuhl, weist ein Fußgestell 2 auf, das über Rollen 3 gegenüber dem Boden abgestützt ist. An dem Fußgestell 2 ist eine höhenverstellbare Stuhlsäule 4 angebracht, an deren oberem Ende ein Sitzträger 5 lösbar befestigt ist, auf dem wiederum eine Sitzplatte 6 mit einem gepolsterten Sitz 7 angebracht ist. Am hinteren Ende des Sitzträgers 5 ist ein sich im wesentlichen nach oben erstreckender Rückenlehnen-Träger 8 angebracht, an dem eine gepolsterte Rückenlehne 9 befestigt ist. Am oberen Ende des RückenlehnenTrägers 8 ist ein Kopfstützen-Träger 10 angebracht, an dem eine Kopfstütze 11 befestigt ist.A schematically illustrated in Figure 1 chair 1, in particular an office chair, has a pedestal 2, which is supported by rollers 3 relative to the ground. On the pedestal 2, a height-adjustable chair column 4 is attached to the upper end of a seat support 5 is releasably attached, on which in turn a seat plate 6 is attached with a padded seat 7. At the rear end of the seat support 5 is a substantially upwardly extending backrest support 8 is attached to which a padded backrest 9 is attached. At the upper end of the backrest support 8, a headrest support 10 is attached, to which a headrest 11 is attached.

Im folgenden wird unter Bezugnahme auf die Figuren 2 bis 5 der Aufbau des Sitzträgers 5 und der Sitzplatte 6 genauer beschrieben. Der Sitzträger 5 weist einen vorderen Sitzträger-Teil 12 und einen an diesem um eine Schwenkachse 13 verschwenkbar angelenkten hinteren Sitzträger-Teil 14 auf. Der Sitzträger-Teil 12 besteht aus einem im wesentlichen horizontal verlaufenden Träger 15 mit einer vertikal verlaufenden konischen Aufnahme 16, in der das obere Ende der Stuhlsäule 4 befestigt ist. An dem vorderen Ende des Trägers 15 ist ein schräg nach oben verlaufender Tragarm 17 angebracht. Der Stuhl weist eine horizontale, von der Rückenlehne 9 zur Sitzplatte 6 weisende Front-Richtung 18 auf, die der Blickrichtung eines Benutzers des Stuhles 1 entspricht. An dem vorderen Ende des Tragarmes 17 ist eine horizontal zurückspringender, sich entgegen der Richtung 18 erstreckender Tragarm 19 angebracht, dessen freies Ende 20 oberhalb des Trägers 15 liegt. An dem Ende 20 des Tragarmes 19 ist der hintere Sitzträger-Teil 14 über eine Welle 21 verschwenkbar angelenkt. Die Schwenkachse 13 verläuft horizontal. Der Sitzträger-Teil 14 weist, benachbart zu der Welle 21, einen sich senkrecht zur Richtung 18 erstreckenden, horizontal angeordneten, sich im wesentlichen über die Breite der Sitzplatte 6 erstreckenden Querträger 22 auf. An den äußeren Enden 23 des Querträgers 22 sind als Bestandteile des Sitzträger-Teils 14 zwei Arme 24 angebracht, die sich senkrecht von dem Querträger 22 schräg nach hinten oben erstrecken und mit der Horizontalen B einen Neigungswinkel a einschließen. Der Neigungswinkel a ist durch die Verschwenkung des Sitzträger-Teils 14 um die Schwenkachse 13 veränderbar, ist jedoch in der Regel größer als 0 °. Der typische Bereich des Neigungswinkels a liegt zwischen 20 ° und 30 °. Die Arme 24 gehen in zwei im wesentlichen vertikal verlaufende Streben 25 über, die den Rückenlehnen-Träger 8 bilden. Der seitliche Rand 26 der Sitzplatte 6 ragt in seitlicher Richtung etwas, jedoch nur unwesentlich über den seitlichen Rand der Arme 24 hervor, wie dies in Figur 2 dargestellt ist. Auf der Oberseite der Arme 24 ist jeweils eine, ebenfalls mit einem Neigungswinkel a gegenüber der Horizontalen geneigte, zur Rückenlehne 9 hin ansteigende, ebene Gleitfläche 27 vorgesehen. Der Querträger 22 weist zwei in Richtung 18 vorstehende Laschen 28 auf, durch die die Welle 21 geführt ist und über die der hintere Sitzträger-Teil 14 am vorderen Sitzträger-Teil 12 angelenkt ist. Am Querträger 22 ist ferner mittig ein nach unten vorstehender Hebel 29 befestigt, an dessen unterem Ende über ein Gelenk 30 ein Kraftspeicher 31 in Form einer längenverstellbaren, von außen betätigbaren Gasfeder angelenkt ist. Über den Kraftspeicher 31 wird eine Gegenkraft erzeugt, z. B. wenn der Benutzer des Stuhles 1 sich mit der Rückenlehne 9 nach hinten lehnt. Der hintere Sitzträger-Teil 14 sowie der Rückenlehnen-Träger 8 sind somit entgegen einer vom Kraftspeicher 31 stammenden Kraft gegenüber dem vorderen Sitzträger-Teil 12 verschwenkbar. Der Stuhl 1 ist spiegelsymmetrisch bezüglich der Symmetrieebene A aufgebaut.In the following, the structure of the seat support 5 and the seat plate 6 will be described in more detail with reference to Figures 2 to 5. The seat support 5 has a front seat support part 12 and a pivotable about this at a pivot axis 13 rear seat support part 14. The seat support part 12 consists of a substantially horizontally extending support 15 with a vertically extending conical receptacle 16, in which the upper end of the chair column 4 is fixed. At the front end of the carrier 15, an obliquely upwardly extending support arm 17 is attached. The chair has a horizontal, from the backrest 9 to the seat plate 6 facing front-direction 18, which corresponds to the viewing direction of a user of the chair 1. At the front end of the support arm 17 is a horizontally recessed, opposite to the direction 18 extending support arm 19 is attached, the free end 20 is above the support 15. At the end 20 of the support arm 19 is the rear Seat support part 14 pivotally connected via a shaft 21. The pivot axis 13 extends horizontally. The seat carrier part 14 has, adjacent to the shaft 21, a perpendicular to the direction 18 extending horizontally arranged, extending substantially across the width of the seat plate 6 cross member 22. At the outer ends 23 of the cross member 22, two arms 24 are mounted as components of the seat support member 14, which extend perpendicularly from the cross member 22 obliquely rearwardly above and include a horizontal angle B with an inclination angle a. The inclination angle a is variable by the pivoting of the seat support part 14 about the pivot axis 13, but is usually greater than 0 °. The typical range of the inclination angle a is between 20 ° and 30 °. The arms 24 merge into two substantially vertically extending struts 25 which form the backrest support 8. The lateral edge 26 of the seat plate 6 protrudes in the lateral direction slightly, but only slightly above the lateral edge of the arms 24, as shown in Figure 2. On the upper side of the arms 24 one, in each case also inclined at an angle of inclination a with respect to the horizontal, is raised towards the backrest 9 and is provided with a planar sliding surface 27. The cross member 22 has two tabs 28 projecting in the direction 18, through which the shaft 21 is guided and via which the rear seat support part 14 is articulated on the front seat support part 12. On the cross member 22 a downwardly projecting lever 29 is also centrally attached, at the lower end via a hinge 30, a force accumulator 31 is articulated in the form of a length-adjustable, operable from the outside gas spring. About the energy storage 31, a counter force is generated, for. B. when the user of the chair 1 leans with the backrest 9 to the rear. The rear seat support part 14 and the backrest support 8 are thus opposite to a coming from the power storage 31 force over the front Seat support part 12 pivotable. The chair 1 is constructed mirror-symmetrically with respect to the plane of symmetry A.

Die Sitzplatte 6 ist gegenüber dem vorderen Sitzträger-Teil 12 über eine vordere Trag-Führungs-Einheit 32 abgestützt. Am vorderen oberen Ende des Tragarmes 17 ist ein sich beidseitig nach außen erstreckendes, horizontal verlaufendes Tragrohr 33 befestigt, das eine Mittel-Längs-Achse 34 aufweist, die horizontal und parallel zur Schwenkachse 13 und zur Achse des Gelenks 30 verläuft. Das Tragrohr 33 ist mittig unter der Sitzplatte 6 angeordnet und erstreckt sich ungefähr über Dreiviertel der Breite der Sitzplatte 6. Das Tragrohr 33 weist im Bereich seiner beiden äußeren Enden ringzylindrische Abschnitte 35 auf, auf denen eine Lager-Hülse 36 um die Achse 34 verschwenkbar ist. Die beiden Lager-Hülsen 36 weisen jeweils auf ihrer Oberseite einen nach oben vorstehenden Stift 37 mit einem radial vorspringenden Kopf 38 auf, wobei der Stift 37 in einem zugehörigen Langloch 39 in der Sitzplatte 6, also in einer Langloch-Führung, geführt ist. Das Langloch 39 weist an seinem in Richtung 18 liegenden Ende eine Schlüsselloch-Öffnung 40 auf, durch die der Kopf 38 zur Montage oder Demontage der Sitzplatte 6 geschoben werden kann. Die Breite des Kopfes 38 ist größer als die Breite des Langlochs 39, so daß die Sitzplatte 6 gegenüber de Lager-Hülse 36 entlang der Richtung 18 verschiebbar geführt ist, jedoch nicht abgehoben werden kann, solange der Kopf 38 nicht im Bereich der Schlüsselloch-Öffnung 40 ist. Parallel zu dem Langloch 39 sind auf beiden Seiten nach unten vorstehende Gleitschienen 41, die wie die Sitzplatte 6 aus Kunststoff bestehen, vorgesehen, die auf einer parallel dazu verlaufenden Gleit-Stütz-Platte 42 abgestützt sind, die mit der Hülse 36 verbunden und auf dieser abgestützt ist. Die Platte 42 steht in Richtung 18 und entgegen zu dieser über die Hülse 36 hervor und stützt die Sitzplatte 6 ab, so daß auch bei einem schweren Benutzer des Stuhles 1 ein Abknicken des vorderen Bereichs der Sitzplatte 6 verhindert wird. Die Platte 42 ist, wie auch die Sitzplatte 6 in diesem Bereich, leicht nach oben gekrümmt, d. h. bezogen auf die Achse 34 konvex.The seat plate 6 is supported relative to the front seat support part 12 via a front support-guide unit 32. At the front upper end of the support arm 17 is a horizontally extending on both sides extending horizontally extending support tube 33 which has a central longitudinal axis 34 which extends horizontally and parallel to the pivot axis 13 and the axis of the joint 30. The support tube 33 is arranged centrally below the seat plate 6 and extends approximately over three quarters of the width of the seat plate 6. The support tube 33 has in the region of its two outer ends annular cylindrical portions 35 on which a bearing sleeve 36 about the axis 34 is pivotable , The two bearing sleeves 36 each have on their upper side an upwardly projecting pin 37 with a radially projecting head 38, wherein the pin 37 is guided in an associated slot 39 in the seat plate 6, ie in a slot guide. The slot 39 has at its end lying in the direction 18 a keyhole opening 40 through which the head 38 can be pushed for mounting or dismounting the seat plate 6. The width of the head 38 is greater than the width of the slot 39, so that the seat plate 6 relative to the bearing sleeve 36 along the direction 18 is slidably guided, but can not be lifted, as long as the head 38 is not in the keyhole opening 40 is. Parallel to the slot 39 are on both sides downwardly projecting slides 41, which consist as the seat plate 6 made of plastic, which are supported on a parallel sliding support plate 42, which is connected to the sleeve 36 and on this is supported. The plate 42 protrudes in the direction 18 and opposite to this on the sleeve 36 and supports the seat plate 6, so that even with a heavy user of the chair 1 a kinking the front portion of the seat plate 6 is prevented. The plate 42 is, as well as the seat plate 6 in this area, slightly curved upwards, ie, relative to the axis 34 convex.

Die Sitzplatte 6 besteht aus einem vorderen Sitzplatten-Teil 43, der gegenüber der vorderen Trag-Führungs-Einheit 32 abgestützt ist, sowie einem hinteren Sitzplatten-Teil 44, der über eine hintere Trag-Führungs-Einheit 45 gegenüber dem hinteren Sitzträger-Teil 14 abgestützt ist. Die Sitzplatten-Teile 43 und 45 sind über ein Gelenk 46 miteinander verbunden. Bei dem Gelenk 46 handelt es sich um ein Filmscharnier. Die Teile 43 und 44 sowie das Gelenk 46 sind einteilig aus Kunststoff ausgebildet. Das vordere Teil 43 ist, wie bereits erwähnt, nach oben gekrümmt. Das hintere Teil 44 verläuft eben. Die Sitzplatte 6 ist entlang ihres Umfangs mit einem in Draufsicht im wesentlichen rechteckigen, wulstförmigen Rand 47 umgeben, der auf seiner Innenseite eine umlaufende Nut 48 aufweist.The seat plate 6 consists of a front seat plate part 43, which is supported against the front support guide unit 32, and a rear seat plate part 44, which has a rear support guide unit 45 relative to the rear seat support part 14th is supported. The seat plate parts 43 and 45 are connected to each other via a hinge 46. The hinge 46 is a living hinge. The parts 43 and 44 and the hinge 46 are integrally formed of plastic. The front part 43 is, as already mentioned, curved upwards. The rear part 44 is flat. The seat plate 6 is surrounded along its circumference with a substantially rectangular in plan view, bead-shaped edge 47 having a circumferential groove 48 on its inside.

Die hintere Trag-Führungs-Einheit 45 weist walzenförmige Rollen 49 auf, die in entsprechenden Lagerausnehmungen 50 auf der Unterseite des Sitzplatten-Teils 44 drehbar gelagert sind. Es sind jeweils zwei Rollen 49 hintereinander angeordnet, die auf je einer Gleitfläche 27 der beiden Arme 24 abgestützt sind und das Gleiten der Sitzplatte 6 auf den Gleitflächen 27 verbessern. Zwischen den Armen 24 sind zwei benachbart zu diesen angeordnete, parallel zu diesen verlaufende Führungszapfen 51 an dem Querträger 22 befestigt. Der Querträger 22 weist hierzu Bohrungen 52 auf, durch die ein verjüngter Abschnitt 53 geführt ist, der mit dem Querträger 22 verschweißt ist. Auf der Unterseite des hinteren Sitzplatten-Teils 44 sind zwei Lagerböcke 54 befestigt, die auf den Führungszapfen 51 verschiebbar geführt sind. Die Führungszapfen 51 weisen endseitig eine radial vorspringende, in diese eingeschraubte Schraube 55 auf, um ein Abrutschen des Lagerbocks 54 von dem Führungszapfen 51 zu verhindern. Zwischen dem Lagerbock 54 und einen im Bereich des Querträgers 22 angeordneten, den Führungszapfen 51 umgebenden Anschlag 56, ist ein Federelement in Form von zwei Spiralfedern 57 vorgesehen, zwischen denen eine Hülse 58 angeordnet ist. Die Hülse 58 verhindert, daß bei einem Zusammendrücken der Spiralfedern 57 ein Teil der Spiralfeder auf dem Führungszapfen 51 schabt und entsprechende Geräusche verursacht und diesen verkratzt. Mehrere kleine hintereinander angeordnete Spiralfedern 57, durch eine Hülse 58 geführte sind insofern einer einzigen größeren Spiralfeder vorzuziehen, wobei jedoch selbstverständlich auch eine einzige Spiralfeder auf dem Führungszapfen 51 verwendet werden kann. Der Neigungswinkel a der Führungszapfen 51 gegenüber der Horizontalen B entspricht dem Neigungswinkel a der Gleitflächen 27 gegenüber der Horizontalen B.The rear support-guide unit 45 has roller-shaped rollers 49 which are rotatably mounted in corresponding bearing recesses 50 on the underside of the seat plate part 44. There are two rollers 49 arranged one behind the other, which are each supported on a sliding surface 27 of the two arms 24 and improve the sliding of the seat plate 6 on the sliding surfaces 27. Between the arms 24 are arranged adjacent to these, parallel to this extending guide pin 51 is secured to the cross member 22. The cross member 22 has for this purpose bores 52, through which a tapered portion 53 is guided, which is welded to the cross member 22. On the underside of the rear seat plate part 44 two bearing blocks 54 are fixed, which are guided on the guide pin 51 slidably. The guide pins 51 have at their ends a radially projecting, screwed into this screw 55 to slipping of the bearing block 54 of the guide pin 51 to prevent. Between the bearing block 54 and arranged in the region of the cross member 22, the guide pin 51 surrounding stop 56, a spring element in the form of two coil springs 57 is provided, between which a sleeve 58 is arranged. The sleeve 58 prevents that upon compression of the coil springs 57, a part of the coil spring on the guide pin 51 scrapes and causes corresponding noise and scratched it. A plurality of small spiral springs 57 arranged in succession, guided by a sleeve 58, are preferable to a single larger spiral spring, although, of course, a single spiral spring can also be used on the guide pin 51. The angle of inclination a of the guide pins 51 relative to the horizontal B corresponds to the angle of inclination a of the sliding surfaces 27 relative to the horizontal B.

Im folgenden wird die Funktionsweise des Stuhles 1 beschrieben, wenn die Position der Rückenlehne arretiert ist. Setzt sich eine Person auf den Sitz 7 und damit auf die Sitzplatte 6, so wird von oben eine Kraft auf den hinteren Sitzplatten-Teil 44 ausgeübt. Entsprechend wird der Teil 44 auf der durch die Gleitflächen 27 gebildeten schiefen Ebene in Figur 4 links nach unten verschoben, wobei gleichzeitig durch den Lagerbock 54 die Spiralfedern 57 auf dem Führungszapfen 51 zusammengedrückt werden und eine Gegenkraft erzeugt wird. Durch die Verschiebung des hinteren Sitzplatten-Teils 44 wird der vordere Sitzplatten-Teil 43 entlang der Richtung 18 auf der Trag-Führungs-Einheit 32 verschoben. Die Verschiebung der Höhe des Gelenks 46 wird durch eine Verschwenkung der Lager-Hülse 36 um die Achse 34 ausgeglichen, so daß es in der Langloch-Führung zu keinem Klemmen kommt. Die Verschiebung der Sitzplatte 6 ist beendet, wenn die durch die Spiralfedern 57 ausgeübte Gegenkraft der von der Schwerkraft des Benutzers stammenden Kraftkomponente entlang der Gleitfläche 27 einschließlich der im System wirkenden Reibungskräfte entspricht. Die Verschiebbarkeit der Sitzfläche entsprechen dem Gewicht und der Schwerpunktslage des Benutzers hat zahlreiche Vorteile. Bei einer größeren und damit in der Regel schwereren Person wird die Sitzplatte 6 weiter nach vorne geschoben, so daß die Oberschenkel des Benutzers besser abgestützt werden. Darüber hinaus findet eine automatische Anpassung der Teile 43 und 44 der Sitzplatte 6 im bezug auf den Schwerpunkt des Benutzers statt, so daß dieser vor allem durch das schräg verlaufende hintere Sitzplatten-Teil 44 automatisch in einer aufrechten Sitzposition unterstützt wird. Ist die Rückenlehne 9 nicht arretiert und verschwenkt der Benutzer diese und ändert damit den Neigungswinkel a der Gleitfläche 27, so findet durch die verschiebbare Sitzplatte 6 automatisch eine Neuanpassung der optimalen Sitzplattenposition statt.In the following, the operation of the chair 1 will be described when the position of the backrest is locked. If a person sits on the seat 7 and thus on the seat plate 6, a force is exerted on the rear seat plate part 44 from above. Accordingly, the part 44 is moved on the inclined plane formed by the sliding surfaces 27 in Figure 4 left down, at the same time by the bearing block 54, the coil springs 57 are compressed on the guide pin 51 and a counterforce is generated. By the displacement of the rear seat plate part 44, the front seat plate part 43 is displaced along the direction 18 on the support guide unit 32. The displacement of the height of the joint 46 is compensated by a pivoting of the bearing sleeve 36 about the axis 34, so that there is no jamming in the slot guide. The displacement of the seat plate 6 is completed when the force exerted by the coil springs 57 counter force of gravity the user's force component along the sliding surface 27 including the frictional forces acting in the system. The displaceability of the seat correspond to the weight and the center of gravity of the user has many advantages. In a larger and thus usually heavier person, the seat plate 6 is pushed further forward, so that the thighs of the user are better supported. In addition, there is an automatic adjustment of the parts 43 and 44 of the seat plate 6 with respect to the center of gravity of the user, so that it is supported mainly by the sloping rear seat plate member 44 automatically in an upright seating position. If the backrest 9 is not locked and the user pivots this and thus changes the angle of inclination a of the sliding surface 27, a new adjustment of the optimum seat plate position automatically takes place by the displaceable seat plate 6.

Claims (10)

  1. Chair, in particular office chair,
    a. with a base frame (2),
    b. with a seat support (5) supported thereon,
    c. with a seat panel (6) supported on the seat support (5), and
    d. with a backrest (9) fastened to the seat support (5),
    characterized in that
    e. the seat support (5) has a rear supporting and guiding unit (45) facing the backrest (9),
    i. with respect to which the seat panel (6) is supported and
    ii. on which the seat panel (6) is displaceably guided obliquely with respect to the horizontal counter to at least one spring element, and
    f. the seat support (5) has a front supporting and guiding unit (32),
    i. with respect to which the seat panel (6) is supported and
    ii. on which the seat panel (6) is displaceably guided.
  2. Chair according to Claim 1, characterized in that the rear supporting and guiding unit (45) has at least one sliding surface (27) running obliquely with respect to the horizontal.
  3. Chair according to Claim 1 or 2, characterized in that the rear supporting and guiding unit (45) has at least one guiding peg (51) with at least one spiral spring (57) surrounding the latter.
  4. Chair according to Claim 3, characterized in that at least one bearing (54) in which the at least one guiding peg (51) is displaceably guided is fastened to the seat panel (6).
  5. Chair according to one of the preceding claims, characterized in that the front supporting and guiding unit (32) is pivotable about an axis or rotation (34) running horizontally with respect to the seat support (5).
  6. Chair according to one of the preceding claims, characterized in that the front supporting and guiding unit (32) has at least one guiding pin (37) which is displaceably guided in at least one slot (39) provided in the seat panel (6).
  7. Chair according to one of the preceding claims, characterized in that the seat panel (6) has a front seat-panel part (43) and a rear seat-panel part (44) which are connected to each other via a joint (46).
  8. Chair according to Claim 3, characterized in that the seat panel (6) can be pushed forwards counter to the spring force of the spring element (57).
  9. Chair according to Claim 3, characterized in that two guiding pegs (51) running parallel to each other are provided.
  10. Chair according to Claim 2, characterized in that the sliding surface (27) encloses with the horizontal an angle of inclination a which can be changed.
EP02028450A 2002-01-08 2003-01-02 Chair Expired - Lifetime EP1325693B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10200355A DE10200355A1 (en) 2002-01-08 2002-01-08 chair
DE10200355 2002-01-08
US10/339,563 US6863346B2 (en) 2002-01-08 2003-01-10 Chair

Publications (3)

Publication Number Publication Date
EP1325693A2 EP1325693A2 (en) 2003-07-09
EP1325693A3 EP1325693A3 (en) 2004-01-21
EP1325693B1 true EP1325693B1 (en) 2006-10-11

Family

ID=42309969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02028450A Expired - Lifetime EP1325693B1 (en) 2002-01-08 2003-01-02 Chair

Country Status (9)

Country Link
US (1) US6863346B2 (en)
EP (1) EP1325693B1 (en)
CN (1) CN1268258C (en)
AT (1) ATE341971T1 (en)
CA (1) CA2415728A1 (en)
DE (2) DE10200355A1 (en)
DK (1) DK1325693T3 (en)
ES (1) ES2274941T3 (en)
HK (1) HK1053961A1 (en)

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US9801471B2 (en) 2014-04-17 2017-10-31 Hni Technologies Inc. Chair and chair control assemblies, systems, and methods

Also Published As

Publication number Publication date
DE50305311D1 (en) 2006-11-23
US20040135413A1 (en) 2004-07-15
ES2274941T3 (en) 2007-06-01
US6863346B2 (en) 2005-03-08
ATE341971T1 (en) 2006-11-15
EP1325693A2 (en) 2003-07-09
CA2415728A1 (en) 2003-07-08
HK1053961A1 (en) 2003-11-14
EP1325693A3 (en) 2004-01-21
DK1325693T3 (en) 2007-02-05
CN1268258C (en) 2006-08-09
CN1432326A (en) 2003-07-30
DE10200355A1 (en) 2003-07-17

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