EP2398355A2 - Seating furniture, in particular office swivel chair - Google Patents

Seating furniture, in particular office swivel chair

Info

Publication number
EP2398355A2
EP2398355A2 EP10705111A EP10705111A EP2398355A2 EP 2398355 A2 EP2398355 A2 EP 2398355A2 EP 10705111 A EP10705111 A EP 10705111A EP 10705111 A EP10705111 A EP 10705111A EP 2398355 A2 EP2398355 A2 EP 2398355A2
Authority
EP
European Patent Office
Prior art keywords
backrest support
seat
support
backrest
seating furniture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10705111A
Other languages
German (de)
French (fr)
Other versions
EP2398355B1 (en
Inventor
Johannes Uhlenbrock
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.)
Uhlenbrock Consulting
Original Assignee
Uhlenbrock Consulting
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Uhlenbrock Consulting filed Critical Uhlenbrock Consulting
Publication of EP2398355A2 publication Critical patent/EP2398355A2/en
Application granted granted Critical
Publication of EP2398355B1 publication Critical patent/EP2398355B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
    • A47C1/03274—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs of torsion type
    • 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
    • A47C1/03272—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
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • 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
    • A47C1/033—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest the coupling member being a flexible strip
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
    • A47C31/126—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for chairs
    • 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
    • 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 seating, in particular a chair, according to the preamble of patent claim 1.
  • Such a chair is known for example from DE 198 23 632 Cl.
  • this known chair of the energy storage is designed in the form of a tension spring, which is based on the one hand on the backrest support.
  • a two-armed lever is pivotally mounted in the region of the front edge of the seat, wherein one end of the two-armed lever is pivotally connected to the seat and the other end of the two-armed lever with the other end of the tension spring.
  • the tension spring is tensioned, which in turn biases the backrest support and thus the backrest in the direction of the front edge of the seat.
  • the bias of the backrest is dependent on the weight of the seated person, so that it is not necessary to adjust the bias of the backrest manually to the weight of the user.
  • the invention has for its object to increase the efficiency of such a device.
  • the invention makes use of the finding that the weight of a normally seated person is the seat area of the seat in the rear area which is the highest. overloaded.
  • the weight force can not be effectively utilized, since in this device, the load of the force accumulator takes place over the front region of the seat, that is, the thigh area of the seated person.
  • the invention proposes that the energy accumulator acts on a cross-connector on the backrest support, which can thus be arranged in the rear of the seat and can be operated by almost the full weight of the seated person.
  • the term "effective distance” refers to the effective lever length with which the energy accumulator acts on the backrest support to pivot it.
  • the seat is hinged to the cross connector by a bearing, between its connection to the energy storage and the backrest support.
  • a load on the seat of the cross connector is pivoted on the backrest carrier and thereby biases the energy storage.
  • the extent of the gift of the cross connector is dependent on the location of the storage on the cross connector. If the bearing is designed to be movable with respect to the pivot point, the extent of the tension of the energy accumulator and thus the pretension of the backrest can be adjusted.
  • the storage is arranged in the rear half, preferably in the region of the rear third of the seat.
  • the seat has an elastic cover, which itself serves as a force accumulator, wherein the elastic cover on the one hand on Carrier part is clamped, on the other hand connected to the backrest support.
  • the requirement is automatically met that essentially the entire weight of the seated person is used for tension of the energy storage.
  • a flexible cover which is substantially non-elastic, is used as a seat, wherein the flexible cover is connected to the energy accumulator in the form of a torsion bar, a torsion spring or a leg spring, on the other hand with the backrest support ,
  • the effect of the force accumulator on the backrest support is dependent on the effective distance between the pivot axis of the backrest support and the point of application of the force accumulator. Accordingly, with a change in the effective distance, the height of the bias of the energy accumulator and thus the amount of bias of the backrest can be changed.
  • tension springs compression springs, gas pressure elements, torsion springs, leg springs, etc. can be used as energy stores, for example.
  • Figure 1 shows a chair according to a first embodiment
  • Figure 2 is a detail view of a second embodiment
  • Figure 3 is a third,sbeispie!
  • Figure 4 is a detail view of a fourth embodiment
  • Figure 5 is a detail view of a fifth embodiment.
  • the chair in this case an office swivel chair, comprises in the usual way a roller cross 20 on which a chair column 22 is connected to a carrier part 1.
  • a backrest support 3 is pivotally connected to the support part 1, wherein the backrest support 3 carries a chair back 13.
  • the support member 1 further includes a slide 11, in which a slotted guide 12 of a seat 5 is slidably mounted.
  • one end of a tension spring 9 is pivotally mounted in a bearing 10, wherein the other end of the tension spring 9 is hinged to a cross connector 6 in a bearing 8.
  • the other end of the cross connector 6 is mounted in a bearing 4 of the backrest support 3.
  • Via a tab 14 of the cross connector 6 is pivotally connected in a bearing 7 with the seat.
  • the tension spring 9 is not directly connected to the cross connector 6 but via a connecting element 15 in the form of a rope, a chain or the like, which is guided over a deflection 10 '.
  • One end of the tension spring is connected to the deflecting element 15, and the other end is connected to a bearing 16 on the carrier part 1.
  • the remaining components correspond to those of the first embodiment.
  • the seat is formed as an elastic membrane 30 which is firmly clamped at 10 "to the support member 1 and fixed at 4 'to the back 13.
  • the membrane 30 By its elasticity causes the membrane 30, that under load from a seated person, the back 13 is biased, whereby the same effect is achieved for the first two embodiments.
  • the seat is formed by a substantially inelastic reference 32, which is connected to the support member 1 with a force storage 9 'in the form of, for example, a torsion bar, a torsion spring or a leg spring is.
  • a force storage 9 'in the form of, for example, a torsion bar, a torsion spring or a leg spring is.
  • the reference at 4 'to the back 13 is connected.
  • Figure 5 shows a detailed view of a fifth embodiment, wherein like elements bear like reference numerals.
  • the force accumulator is a compression spring 34 which acts on the cross connector 6 on the one hand and on the backrest support 3 on the other hand via a lever mechanism 36.
  • the lever 36 extends approximately parallel to the transverse connector 6 and forms with the region of the backrest support between the bearings 2 and 4 a rigid angle lever.
  • the compression spring 34 which is articulated in a bearing 38 on the angle lever, is subjected to pressure, so that a force is exerted on the lever 36 and thus on the lever. carrier 3 is transmitted, so that the counterforce of the backrest is proportional to the body weight.
  • backrest support and the backrest can be integrally formed with one another, as shown for example in FIG. 3, or as separate parts according to FIG. 1.
  • the chair above the chair column is constructed substantially by the side symmetry, wherein the devices according to Figures 1 and 2 can be arranged centrally or double, on each side one.
  • the devices described here can also be used in other seating furniture such as 4-legged chairs, armchairs, sofas and the like, wherein the support member can be adjusted as needed.

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)

Abstract

The invention relates to a piece of seating furniture, in particular to a chair, having a seat (5) and a backrest support (3), both mounted on a support piece (1), wherein the backrest support (3) can be pivoted about a horizontal pivot axis (2), and an energy accumulator (9), which is stressed when applying a load to the seat and exerts force on the backrest support (3), wherein the energy accumulator (9) engages the backrest support (3) at an effective distance from the pivot axis. In order to improve the efficiency of such a device, it is proposed for the energy accumulator (9) to be connected not only to the support piece (1), but via a cross connector (6) also to the backrest support (3). The device according to the invention allows for loading the energy accumulator (9) substantially by the rear area of the seat and thus substantially by the total weight of a person sitting on said seat. In an alternative embodiment, the seat comprises an elastic covering, which is both clamped into the support piece and connected to the backrest support, wherein the elastic covering serves as an energy accumulator. According to another alternative, the seat comprises a flexible covering, which is connected both to the energy accumulator and to the backrest support.

Description

Sitzmöbel, insbesondere Bürodrehstuhl Seating furniture, in particular office swivel chair
Die Erfindung betrifft Sitzmöbel, insbesondere einen Stuhl, gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to seating, in particular a chair, according to the preamble of patent claim 1.
Ein derartiger Stuhl ist beispielsweise aus der DE 198 23 632 Cl bekannt. Bei diesem bekannten Stuhl ist der Kraftspeicher in Form einer Zugfeder ausgebildet, die einerseits am Lehnenträger angelehnt ist. Am Trägerteil ist im Bereich der Vorderkante des Sitzes ein zweiarmiger Hebel schwenkbar befestigt, wobei das eine Ende des zweiarmigen Hebels schwenkbar mit dem Sitz verbunden ist und das andere Ende des zweiarmigen Hebels mit dem anderen Ende der Zugfeder. Durch eine Belastung des Sitzes wird der zweiarmige Hebel verschwenkt, wodurch die Zugfeder gespannt wird, die ihrerseits dem Lehnenträger und damit die Lehne in Richtung auf die Vorderkante des Sitzes vorspannt.Such a chair is known for example from DE 198 23 632 Cl. In this known chair of the energy storage is designed in the form of a tension spring, which is based on the one hand on the backrest support. On the support part, a two-armed lever is pivotally mounted in the region of the front edge of the seat, wherein one end of the two-armed lever is pivotally connected to the seat and the other end of the two-armed lever with the other end of the tension spring. By a load on the seat of the two-armed lever is pivoted, whereby the tension spring is tensioned, which in turn biases the backrest support and thus the backrest in the direction of the front edge of the seat.
Durch die beschriebene Vorrichtung wird erreicht, dass die Vorspannung der Lehne abhängig von dem Gewicht der sitzenden Person ist, so dass es nicht erforderlich ist, die Vorspannung der Lehne manuell auf das Gewicht des Benutzers einzustellen.By the described device is achieved that the bias of the backrest is dependent on the weight of the seated person, so that it is not necessary to adjust the bias of the backrest manually to the weight of the user.
Der Erfindung liegt die Aufgabe zugrunde, die Effizienz einer derartigen Vorrichtung zu steigern.The invention has for its object to increase the efficiency of such a device.
Die Lösung dieser Aufgabe erfolgt durch die Merkmale des Patentanspruchs 1, 3, 10 bzw. 12; die Unteransprüche betreffen vorteilhafte Ausgestaltungen der Erfindung.The solution of this object is achieved by the features of claim 1, 3, 10 and 12; the subclaims relate to advantageous embodiments of the invention.
Die Erfindung macht sich die Erkenntnis zunutze, dass das Gewicht einer normal sitzenden Person die Sitzfläche des Sitzes im hinteren Bereich am höchsten be- lastet. Somit kann bei der gattungsgemäßen Vorrichtung die Gewichtskraft nicht effektiv ausgenutzt werden, da bei dieser Vorrichtung die Belastung des Kraftspeichers über den vorderen Bereich des Sitzes erfolgt, das heißt des Oberschenkelbereichs der sitzenden Person.The invention makes use of the finding that the weight of a normally seated person is the seat area of the seat in the rear area which is the highest. overloaded. Thus, in the generic device, the weight force can not be effectively utilized, since in this device, the load of the force accumulator takes place over the front region of the seat, that is, the thigh area of the seated person.
Demgegenüber wird erfindungsgemäß vorgeschlagen, dass der Kraftspeicher über einen Querverbinder am Lehnenträger angreift, der somit im hinteren Bereich des Sitzes angeordnet werden kann und durch nahezu das vollständige Gewicht der sitzenden Person betätigt werden kann.In contrast, the invention proposes that the energy accumulator acts on a cross-connector on the backrest support, which can thus be arranged in the rear of the seat and can be operated by almost the full weight of the seated person.
Dabei bezeichnet der Begriff "Wirkabstand" die wirksame Hebellänge, mit der der Kraftspeicher am Lehnenträger zu dessen Verschwenkung angreift.In this case, the term "effective distance" refers to the effective lever length with which the energy accumulator acts on the backrest support to pivot it.
Vorzugsweise ist der Sitz am Querverbinder durch eine Lagerung angelenkt, und zwar zwischen dessen Verbindung mit dem Kraftspeicher und dem Lehnenträger. Durch eine Belastung des Sitzes wird der Querverbinder am Lehnenträger verschwenkt und spannt dadurch den Kraftspeicher.Preferably, the seat is hinged to the cross connector by a bearing, between its connection to the energy storage and the backrest support. By a load on the seat of the cross connector is pivoted on the backrest carrier and thereby biases the energy storage.
Das Ausmaß der Verschenkung des Querverbinders ist abhängig von der Lage der Lagerung am Querverbinder. Wird die Lagerung in Bezug auf den Ver- schwenkpunkt bewegbar ausgestaltet, kann das Ausmaß der Spannung des Kraftspeichers und damit die Vorspannung der Rückenlehne eingestellt werden.The extent of the gift of the cross connector is dependent on the location of the storage on the cross connector. If the bearing is designed to be movable with respect to the pivot point, the extent of the tension of the energy accumulator and thus the pretension of the backrest can be adjusted.
Dabei ist es nicht erforderlich, den Kraftspeicher direkt mit dem Querverbinder zu verbinden; dies kann auch über ein geeignetes Verbindungselement wie eine Kette, ein Seil oder dergleichen erfolgen.It is not necessary to connect the energy storage directly to the cross connector; This can also be done via a suitable connecting element such as a chain, a rope or the like.
Um das Gewicht der sitzenden Person besonders effektiv ausnutzen zu können, ist die Lagerung in der hinteren Hälfte, vorzugsweise im Bereich des hinteren Drittels des Sitzes angeordnet.In order to be able to utilize the weight of the seated person particularly effectively, the storage is arranged in the rear half, preferably in the region of the rear third of the seat.
In einer alternativen Lösung der Aufgabe weist der Sitz einen elastischen Bezug auf, der selbst als Kraftspeicher dient, wobei der elastische Bezug einerseits am Trägerteil eingespannt ist, andererseits mit dem Lehnenträger verbunden ist. Bei dieser Lösung wird automatisch der Forderung erfüllt, dass im Wesentlichen das gesamte Gewicht der sitzenden Person zur Spannung des Kraftspeichers verwendet wird.In an alternative solution of the problem, the seat has an elastic cover, which itself serves as a force accumulator, wherein the elastic cover on the one hand on Carrier part is clamped, on the other hand connected to the backrest support. In this solution, the requirement is automatically met that essentially the entire weight of the seated person is used for tension of the energy storage.
Entsprechendes gilt auch in einer weiteren Alternative, in der ein flexibler Bezug, der im Wesentlichen nicht elastisch ist, als Sitz eingesetzt wird, wobei der flexible Bezug mit dem Kraftspeicher in Form eines Drehstabes, einer Drehfeder oder einer Schenkelfeder verbunden ist, andererseits mit dem Lehnenträger.The same applies in a further alternative, in which a flexible cover, which is substantially non-elastic, is used as a seat, wherein the flexible cover is connected to the energy accumulator in the form of a torsion bar, a torsion spring or a leg spring, on the other hand with the backrest support ,
In allen Ausführungsformen ist die Wirkung des Kraftspeichers auf den Lehnenträger abhängig vom Wirkabstand zwischen der Schwenkachse des Lehnenträgers und dem Angriffspunkt des Kraftspeichers. Dementsprechend kann bei einer Veränderung des Wirkabstandes die Höhe der Vorspannung des Kraftspeichers und damit die Höhe der Vorspannung der Lehne verändert werden.In all embodiments, the effect of the force accumulator on the backrest support is dependent on the effective distance between the pivot axis of the backrest support and the point of application of the force accumulator. Accordingly, with a change in the effective distance, the height of the bias of the energy accumulator and thus the amount of bias of the backrest can be changed.
Abhängig von der konkreten Ausgestaltung können als Kraftspeicher beispielsweise Zugfedern, Druckfedern, Gasdruckelemente, Torsionsfedern, Schenkelfe- dem etc. eingesetzt werden.Depending on the specific configuration, tension springs, compression springs, gas pressure elements, torsion springs, leg springs, etc. can be used as energy stores, for example.
Ausführungsbeispiele der Erfindung werden anhand der beigefügten Zeichnungen erläutert. Dabei zeigen, jeweils in Seitenansicht:Embodiments of the invention will be explained with reference to the accompanying drawings. Show, in side view:
Figur 1 einen Stuhl gemäß einem ersten Ausführungsbeispiel, Figur 2 eine Detailansicht eines zweiten Ausführungsbeispiels, Figur 3 ein drittes Ausführungsbeispie! undFigure 1 shows a chair according to a first embodiment, Figure 2 is a detail view of a second embodiment, Figure 3 is a third Ausführungsbeispie! and
Figur 4 eine Detailansicht eines vierten Ausführungsbeispiels, und Figur 5 eine Detailansicht eines fünften Ausführungsbeispiels.Figure 4 is a detail view of a fourth embodiment, and Figure 5 is a detail view of a fifth embodiment.
Gemäß Figur 1 umfasst der Stuhl, hier ein Bürodrehstuhl, in üblicher Weise ein Rollenkreuz 20, auf dem eine Stuhlsäule 22 mit einem Trägerteil 1 verbunden ist. In einer Lagerung 2 ist ein Lehnenträger 3 mit dem Trägerteil 1 schwenkbar verbunden, wobei der Lehnenträger 3 eine Stuhllehne 13 trägt. Das Trägerteil 1 weist ferner eine Gleitbahn 11 auf, in der eine Kulissenführung 12 eines Sitzes 5 verschieblich gelagert ist.According to FIG. 1, the chair, in this case an office swivel chair, comprises in the usual way a roller cross 20 on which a chair column 22 is connected to a carrier part 1. In a storage 2, a backrest support 3 is pivotally connected to the support part 1, wherein the backrest support 3 carries a chair back 13. The support member 1 further includes a slide 11, in which a slotted guide 12 of a seat 5 is slidably mounted.
Im vorderen Bereich des Trägerteils 1 ist ein Ende einer Zugfeder 9 in einer Lagerung 10 schwenkbar gelagert, wobei das andere Ende der Zugfeder 9 an einem Querverbinder 6 in einem Lager 8 angelenkt ist. Das andere Ende des Querverbinders 6 ist in einem Lager 4 des Lehnenträgers 3 gelagert. Über eine Lasche 14 ist der Querverbinder 6 in einem Lager 7 mit dem Sitz schwenkbar verbunden.In the front region of the support part 1, one end of a tension spring 9 is pivotally mounted in a bearing 10, wherein the other end of the tension spring 9 is hinged to a cross connector 6 in a bearing 8. The other end of the cross connector 6 is mounted in a bearing 4 of the backrest support 3. Via a tab 14 of the cross connector 6 is pivotally connected in a bearing 7 with the seat.
Wenn sich eine Person auf dem erfindungsgemäßen Stuhl sitzt, wird durch die Gewichtskraft der Person über die Lasche 14 und das Lager 7 der Querverbinder verschwenkt und spannt die Zugfeder 9, wobei die Spannung der Zugfeder 9 abhängig vom Gewicht der sitzenden Person ist. Durch die Spannung der Zugfeder 9 wird andererseits über den Querverbinder 6 der Lehnenträger vorgespannt, und zwar in die aufrechte Position der Lehne 13. Die sitzende Person kann die Lehne 13 nach hinten verschwenken, wobei der Sitz 5 über das Lager 7 entsprechend verschoben wird (nach rechts in Figur 1).When a person sits on the chair according to the invention, is pivoted by the weight of the person on the tab 14 and the bearing 7 of the cross connector and biases the tension spring 9, wherein the tension of the tension spring 9 is dependent on the weight of the seated person. By the tension of the tension spring 9 on the other hand biased on the cross connector 6 of the backrest support, in the upright position of the backrest 13. The seated person can pivot the backrest 13 to the rear, wherein the seat 5 is displaced according to the bearing 7 (according to right in FIG. 1).
Da die Vorspannung der Zugfeder 9 und damit die Vorspannung der Lehne 13 abhängig ist vom Gewicht der sitzenden Person, ist eine manuelle Einstellung grundsätzlich nicht erforderlich.Since the bias of the tension spring 9 and thus the bias of the backrest 13 is dependent on the weight of the seated person, a manual adjustment is generally not required.
Andererseits können Maßnahmen getroffen werden, um die Vorspannung zusätzlich individuell einzustellen. Dazu kann beispielsweise das Lager 7 zwischen dem Lager 8 und dem Lager 4 verschiebbar eingestellt sein, wodurch der Schwenkbereich des Querverbinders 6 verändert werden kann. Auch ist es möglich, den Wirkabstand, in dem der Kraftspeicher 9 am Lehnenträger angreift, zu verändern, indem beispielsweise Maßnahmen zur Veränderung des Abstandes der Lager 4 und 2 vorgesehen sind. Diese zusätzlichen Einstellmöglichkeiten sind in Figur 1 nicht dargestellt. Figur 2 zeigt ein Detail eines zweiten Ausführungsbeispiels der Erfindung, wobei gleiche Teile mit gleichen Bezugsziffern bezeichnet sind.On the other hand, measures can be taken to adjust the bias individually. For this example, the bearing 7 between the bearing 8 and the bearing 4 may be slidably adjusted, whereby the pivoting range of the cross connector 6 can be changed. It is also possible to change the effective distance in which the energy accumulator 9 acts on the backrest support, for example by measures for changing the distance between the bearings 4 and 2 are provided. These additional adjustment options are not shown in FIG. Figure 2 shows a detail of a second embodiment of the invention, wherein like parts are designated by like reference numerals.
In der zweiten Ausführungsform ist die Zugfeder 9 nicht direkt mit dem Querverbinder 6 verbunden sondern über ein Verbindungselement 15 in Form eines Seils, einer Kette oder dergleichen, das über eine Umlenkung 10' geführt ist. Das eine Ende der Zugfeder ist mit dem Umlenkelement 15 verbunden, und das andere Ende ist mit einer Lagerung 16 am Trägerteil 1 verbunden. Die übrigen Bauelemente entsprechen denen der des ersten Ausführungsbeispiels.In the second embodiment, the tension spring 9 is not directly connected to the cross connector 6 but via a connecting element 15 in the form of a rope, a chain or the like, which is guided over a deflection 10 '. One end of the tension spring is connected to the deflecting element 15, and the other end is connected to a bearing 16 on the carrier part 1. The remaining components correspond to those of the first embodiment.
Gemäß Figur 3 ist der Sitz als elastische Membran 30 ausgebildet, die bei 10" am Trägerteil 1 fest eingespannt ist und bei 4' an der Lehne 13 befestigt ist. Durch ihre Elastizität bewirkt die Membran 30, dass bei Belastung durch eine sitzende Person die Lehne 13 vorgespannt wird, wodurch der gleiche Effekt für die ersten beiden Ausführungsbeispielen erzielt wird.According to Figure 3, the seat is formed as an elastic membrane 30 which is firmly clamped at 10 "to the support member 1 and fixed at 4 'to the back 13. By its elasticity causes the membrane 30, that under load from a seated person, the back 13 is biased, whereby the same effect is achieved for the first two embodiments.
Der gleiche Effekt wird bei dem in Figur 4 dargestellten Ausführungsbeispiel erzielt, wobei in diesem Fall der Sitz durch einen im Wesentlichen unelastischen Bezug 32 gebildet ist, der am Trägerteil 1 mit einem Kraftspeicher 9' in Form beispielsweise eines Drehstabes, einer Drehfeder oder einer Schenkelfeder verbunden ist. Entsprechend dem Ausführungsbeispiel der Figur 3 ist der Bezug bei 4' mit der Lehne 13 verbunden.The same effect is achieved in the embodiment shown in Figure 4, in which case the seat is formed by a substantially inelastic reference 32, which is connected to the support member 1 with a force storage 9 'in the form of, for example, a torsion bar, a torsion spring or a leg spring is. According to the embodiment of Figure 3, the reference at 4 'to the back 13 is connected.
Figur 5 zeigt eine Detailansicht eines fünften Ausführungsbeispiels, wobei gleiche Elemente gleiche Bezugsziffern tragen. Im Unterschied zu dem Ausführungsbei- spiei der Figur 1 ist hier der Kraftspeicher eine Druckfeder 34, die einerseits am Querverbinder 6 angreift, andererseits über eine Hebeleinrichtung 36 mit dem Lehnenträger 3. In der dargestellten Position erstreckt sich der Hebel 36 etwa parallel zum Querverbinder 6 und bildet mit dem Bereich des Lehnenträgers zwischen den Lagern 2 und 4 einen starren Winkelhebel. Bei Belastung des Sitzes wird die Druckfeder 34, die in einem Lager 38 am Winkelhebel angelenkt ist, auf Druck beansprucht, so dass eine Kraft auf den Hebel 36 und damit auf den Leh- nenträger 3 übertragen wird, so dass die Gegenkraft der Lehne dem Körpergewicht proportional ist.Figure 5 shows a detailed view of a fifth embodiment, wherein like elements bear like reference numerals. In contrast to the exemplary embodiment of FIG. 1, here the force accumulator is a compression spring 34 which acts on the cross connector 6 on the one hand and on the backrest support 3 on the other hand via a lever mechanism 36. In the illustrated position, the lever 36 extends approximately parallel to the transverse connector 6 and forms with the region of the backrest support between the bearings 2 and 4 a rigid angle lever. When the seat is loaded, the compression spring 34, which is articulated in a bearing 38 on the angle lever, is subjected to pressure, so that a force is exerted on the lever 36 and thus on the lever. carrier 3 is transmitted, so that the counterforce of the backrest is proportional to the body weight.
Zusätzlich zu den bereits in dem vorstehenden Ausführungsbeispiel genannten Einstellmöglichkeiten ergibt sich hier noch die Möglichkeit, das Lager 38 verschiebbar entlang der Achse des Hebels 36 zu gestalten, so dass damit die Wirklänge des Hebels 36 verändert werden kann und damit eine grundsätzliche weitere Möglichkeit der Einstellung der Gegenkraft der Lehne erzielt wird.In addition to the already mentioned in the preceding embodiment settings here is still the possibility to make the bearing 38 slidably along the axis of the lever 36, so that so that the effective length of the lever 36 can be changed and thus a fundamental further possibility of setting the Against the backrest is achieved.
In dem vorstehenden Text ergeben sich die Definitionen von "vorn", "hinten" etc. aus der Normalposition eines Stuhls.In the above text, the definitions of "front", "rear" etc. result from the normal position of a chair.
Des Weiteren sei angemerkt, dass Lehnenträger und Lehne einstückig miteinander ausgebildet sein können, wie dies beispielsweise in Figur 3 dargestellt ist oder als separate Teile gemäß Figur 1.It should also be noted that the backrest support and the backrest can be integrally formed with one another, as shown for example in FIG. 3, or as separate parts according to FIG. 1.
In allen Ausführungsbeispielen ist der Stuhl oberhalb der Stuhlsäule im Wesentlichen seitensymmetrisch aufgebaut, wobei die Vorrichtungen gemäß Figur 1 und 2 mittig oder doppelt, an jeder Seite eine, angeordnet sein können.In all embodiments, the chair above the chair column is constructed substantially by the side symmetry, wherein the devices according to Figures 1 and 2 can be arranged centrally or double, on each side one.
Des Weiteren ist klar, dass die hier beschriebenen Vorrichtungen auch bei anderen Sitzmöbeln wie 4-Beinstühlen, Sesseln, Sofas und dergleichen eingesetzt werden kann, wobei der Trägerteil bei Bedarf entsprechend angepasst werden kann. Furthermore, it is clear that the devices described here can also be used in other seating furniture such as 4-legged chairs, armchairs, sofas and the like, wherein the support member can be adjusted as needed.

Claims

Patentansprüche claims
1. Sitzmöbel, insbesondere als Stuhl, mit einem Sitz (5) und einem Lehnen- träger (3), die auf einem Trägerteil (1) montiert sind, wobei der Lehnenträger (3) um eine horizontale Schwenkachse (2) verschwenkbar ist, und einem Kraftspeicher (9), der bei Belastung des Sitzes gespannt wird und auf den Lehnenträger (3) einwirkt, wobei der Kraftspeicher (9) in einem Wirkabstand von der Schwenkachse am Lehnenträger (3) angreift, dadurch gekennzeichnet, dass der Kraftspeicher (9) einerseits am Trägerteil (1) und andererseits über einen Querverbinder (6) mit dem Lehnenträger (3) verbunden ist.1. Seating, in particular as a chair, with a seat (5) and a backrest support (3), which are mounted on a support part (1), wherein the backrest support (3) about a horizontal pivot axis (2) is pivotable, and an energy accumulator (9), which is tensioned under load of the seat and acts on the backrest support (3), wherein the energy accumulator (9) acts at an effective distance from the pivot axis on the back support (3), characterized in that the energy accumulator (9) on the one hand on the support part (1) and on the other hand via a transverse connector (6) with the backrest support (3) is connected.
2. Sitzmöbel nach Anspruch 1, wobei der Kraftspeicher eine Zugfeder ist.2. Seating furniture according to claim 1, wherein the energy accumulator is a tension spring.
3. Sitzmöbel, insbesondere als Stuhl, mit einem Sitz (5) und einem Lehnenträger (3), die auf einem Trägerteil (1) montiert sind, wobei der Lehnenträger (3) um eine horizontale Schwenkachse (2) verschwenkbar ist, und einem Kraftspeicher (9), der bei Belastung des Sitzes gespannt wird und auf den Lehnenträger (3) einwirkt, wobei der Kraftspeicher in einem Wirkabstand von der Schwenkachse am Lehnenträger (3) angreift, dadurch g e k e n n z e i c h n e t , dass der Kraftspeicher (9) einerseits über eine Hebeleinrichtung (36) am Lehnenträger (3) angreift und andererseits über einen Querverbinder (6) mit dem Lehnenträger (3) verbunden ist.3. Seating, in particular as a chair, with a seat (5) and a backrest support (3), which are mounted on a support part (1), wherein the backrest support (3) about a horizontal pivot axis (2) is pivotable, and a power storage (9), which is tensioned under load of the seat and acts on the backrest support (3), wherein the force accumulator acts at an effective distance from the pivot axis on the backrest support (3), characterized in that the energy accumulator (9) on the one hand via a lever device ( 36) on the backrest support (3) engages and on the other hand via a transverse connector (6) with the backrest support (3) is connected.
4. Sitzmöbel nach Anspruch 3, wobei der Kraftspeicher eine Druckfeder (34) ist.4. Seating furniture according to claim 3, wherein the energy accumulator is a compression spring (34).
5. Sitzmöbel nach Anspruch 3 oder 4, wobei die Achse der Hebeleinrichtung etwa parallel zur Achse des Querverbinders verläuft.5. Seating furniture according to claim 3 or 4, wherein the axis of the lever device extends approximately parallel to the axis of the cross connector.
6. Sitzmöbel nach einem der Ansprüche 1 bis 5, wobei der Sitz (5) in einer Lagerung (7) an dem Querverbinder (6) zwischen dessen Verbindung (8) mit dem Kraftspeicher (9) und dem Lehnenträger (3) angelenkt ist. 6. Seating furniture according to one of claims 1 to 5, wherein the seat (5) in a bearing (7) on the cross connector (6) between the connection (8) with the energy storage device (9) and the backrest support (3) is articulated.
7. Sitzmöbel nach Anspruch 6, wobei die Lagerung (7) bezüglich des Querverbinders (6) verschiebbar ist.7. Seating furniture according to claim 6, wherein the bearing (7) with respect to the cross connector (6) is displaceable.
8. Sitzmöbel nach einem der Ansprüche 1 bis 7, wobei der Kraftspeicher (9) mit dem Querverbinder (6) über ein Umlenkelement (15) verbunden ist.8. Seating furniture according to one of claims 1 to 7, wherein the energy accumulator (9) with the cross connector (6) via a deflecting element (15) is connected.
9. Sitzmöbel nach einem der Ansprüche 6 bis 8, wobei die Lagerung (7) im Bereich der hinteren Hälfte, vorzugsweise im Bereich des hinteren Drittels des Sitzes (5) angeordnet ist.9. Seating furniture according to one of claims 6 to 8, wherein the bearing (7) in the region of the rear half, preferably in the region of the rear third of the seat (5) is arranged.
10. Sitzmöbel mit einem Sitz (5) und einem Lehnenträger (3), die auf einem Trägerteil (1) montiert sind, wobei die Lehnenträger (3) um eine horizontale Schwenkachse (2) verschwenkbar ist, und einem Kraftspeicher (9), der bei Belastung des Sitzes gespannt wird und auf den Lehnenträger (3) einwirkt, wobei der Kraftspeicher (9) in einem Wirkabstand von der Schwenkachse am Lehnenträger (3) angreift, dadurch gekennzeichnet, dass der Sitz (5) einen elastischen Bezug (30) aufweist, der einerseits in dem Trägerteil (1) eingespannt ist und andererseits mit dem Lehnenträger (3) verbunden ist, wobei der elastische Bezug (30) als Kraftspeicher dient.10. Seating furniture with a seat (5) and a backrest support (3), which are mounted on a support part (1), wherein the backrest support (3) about a horizontal pivot axis (2) is pivotable, and a force accumulator (9), the is tensioned under load of the seat and on the backrest support (3) acts, wherein the force accumulator (9) acts at a distance from the pivot axis on the backrest support (3), characterized in that the seat (5) has an elastic cover (30) on the one hand in the support part (1) is clamped and on the other hand connected to the backrest support (3), wherein the elastic cover (30) serves as a force storage.
11. Sitzmöbel mit einem Sitz (5) und einem Lehnenträger (3), die auf einem Trägerteil (1) montiert sind, wobei die Lehnenträger (3) um eine horizontale Schwenkachse (2) verschwenkbar ist, und einem Kraftspeicher (9), der bei Belastung des Sitzes gespannt wird und auf den Lehnenträger (3) einwirkt, wobei der Kraftspeicher (9) in einem Wirkabstand von der Schwenkachse am Lehnenträger (3) angreift, dadurch gekennzeichnet, dass der Sitz einen flexiblen Bezug (2) aufweist, der einerseits mit dem Kraftspeicher (9'), andererseits mit dem Lehnenträger (13) verbunden ist.11. Seating furniture with a seat (5) and a backrest support (3), which are mounted on a support part (1), wherein the backrest support (3) about a horizontal pivot axis (2) is pivotable, and a force accumulator (9), the is tensioned under load of the seat and on the backrest support (3) acts, wherein the energy storage device (9) acts at a distance from the pivot axis on the backrest support (3), characterized in that the seat has a flexible cover (2), on the one hand with the power storage (9 '), on the other hand connected to the backrest support (13).
12. Sitzmöbel nach einem der Ansprüche 1 bis 11, wobei der Wirkabstand, an dem der Kraftspeicher an dem Lehnenträger (3) angreift, veränderbar ist. 12. Seating furniture according to one of claims 1 to 11, wherein the effective distance at which the force accumulator acts on the backrest support (3) is variable.
EP10705111.2A 2009-02-17 2010-02-17 Seating furniture, in particular office swivel chair Not-in-force EP2398355B1 (en)

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DE102009009287A DE102009009287A1 (en) 2009-02-17 2009-02-17 Seating furniture, in particular office swivel chair
PCT/EP2010/000995 WO2010094470A2 (en) 2009-02-17 2010-02-17 Seating furniture, in particular office swivel chair

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CN102333466A (en) 2012-01-25
CN102333466B (en) 2014-11-26
WO2010094470A2 (en) 2010-08-26
CA2752430C (en) 2014-02-04
DE102009009287A1 (en) 2010-09-09
ES2425088T3 (en) 2013-10-11
US20140339870A1 (en) 2014-11-20
AU2010214841B2 (en) 2015-04-23
WO2010094470A3 (en) 2011-03-24
CA2752430A1 (en) 2010-08-26
AU2010214841A1 (en) 2011-09-01
US20120019035A1 (en) 2012-01-26
EP2398355B1 (en) 2013-05-29
US8833856B2 (en) 2014-09-16

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