EP3206533A1 - Chair, in particular office chair - Google Patents

Chair, in particular office chair

Info

Publication number
EP3206533A1
EP3206533A1 EP15777711.1A EP15777711A EP3206533A1 EP 3206533 A1 EP3206533 A1 EP 3206533A1 EP 15777711 A EP15777711 A EP 15777711A EP 3206533 A1 EP3206533 A1 EP 3206533A1
Authority
EP
European Patent Office
Prior art keywords
seat
chair
backrest
chair according
base frame
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
EP15777711.1A
Other languages
German (de)
French (fr)
Other versions
EP3206533B1 (en
Inventor
Simon Desanta
Wilhelm Schulz
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.)
Haworth GmbH
Original Assignee
Haworth GmbH
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 Haworth GmbH filed Critical Haworth GmbH
Publication of EP3206533A1 publication Critical patent/EP3206533A1/en
Application granted granted Critical
Publication of EP3206533B1 publication Critical patent/EP3206533B1/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
    • A47C1/031—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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/445—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf springs

Definitions

  • the invention relates to a chair, in particular an office chair with a movable seat and a movable backrest, wherein a backrest movement is coupled with a seat movement.
  • Such chairs are usually provided as office swivel chairs with elaborate synchronous mechanisms for movement coupling.
  • An example of this is shown by the WO
  • a chair with a rotatable and pivotable seat is known from EP 2 508 102 Bl.
  • Elaborate seat mechanisms are usually only suitable for high-quality office swivel chairs or armchairs. There is an increasing need for even simpler chairs such as so-called conference chairs or visitor chairs to improve the seating comfort.
  • the invention is based on the object to provide a chair with a simplified seat mechanism, which is inexpensive to implement and further improves the comfort.
  • the chair comprises a base frame with a seat and a back, which has two side supports, which pivot independently of each other Seat and hinged to the base, the seat is slidably mounted on the base frame.
  • the side support By coupling the side support with the seat is moved by pivoting the back of the seat, so that the user can take a reclined rest position.
  • the chair can adjust to different lateral loads acting on the backrest.
  • a desired size of the displacement of the seat can be realized.
  • a pivoting of the backrest in a lifting movement of the seat can be implemented in addition to the sliding movement.
  • the seat movement can be supported in particular by the fact that the front edge of the seat is mounted in at least one sliding bearing.
  • the sliding bearing has inclined guide surfaces and has a free space defined on both sides.
  • a designer is given a further degree of freedom for setting the so-called synchronous ratio or the seating position and, secondly, the restoring force of the backrest is transmitted proportionally to the body weight of the user.
  • a parallel displacement of the seat by the stroke is even due to the Lehnenverschränkung and the stroke due to the shift in the inclined guide surfaces, or a tilt and rotation of the seat according to the lateral free space of the sliding bearing when the strokes are different.
  • spring elements are provided, which are fastened on the one hand to the seat, on the other hand to the base frame and thereby bias the chair into its normal position and provide the user with a basic resistance of the backrest while reclining.
  • the side supports are connected to each other via at least one strut, which are articulated elastically, for example, on the side supports and / or are themselves formed elastically.
  • the sliding bearings are designed so that they allow a rotation of the seat in its seating plane. In this way, in the case of a one-sided loading of the backrest of the seat, a pivoting of only one side support can follow, as a result of which the sitting comfort is further increased.
  • FIG. 1 is a schematic side view of a chair in normal position
  • FIG. 2 is a schematic side view of a chair with a maximum inclined back
  • FIG. 3 is a schematic side view of a chair with unilaterally inclined back
  • FIGS. 4 to 6 representations of FIGS. 1 to 3 in plan view
  • Fig. 8 is a schematic sectional view of a sliding bearing in side view
  • Fig. 9 is a schematic sectional view of the sliding bearing in front view.
  • the chair according to the invention comprises a base frame with four legs 1, which are rigidly fixed to a seat frame 2.
  • a seat 3 is mounted, namely at the front edge in a sliding bearing 4 and at its rear edge at the mounting end 5 of a side support.
  • the mounting end 5 is angled, approximately L-shaped, and is connected to a leg with the trailing edge of the seat 3.
  • the other leg carries a backrest rail. 7
  • the chair is symmetrical, ie. the structure described above is provided on both sides of the chair. It can also be seen from these figures that the backrest spars have at their upper end by a strut 8, which is hinged to the backrest struts or inherent elasticity.
  • a support member 9 is further seen that each joins the backrest rail 7 with the base frame.
  • the side support comprises the backrest spar 7 and the mounting end 5, which are rigidly connected to each other and in turn are pivotally connected to the support member 9 in a pivot point 12. Furthermore, it can be seen from this figure that the mounting end 5 is connected in a hinge point 13 with the seat 3 in the region of its rear edge.
  • Fig. 7 shows schematically a spring element 10 which is connected on the one hand in a hinge point 15 to the base frame, on the other hand in a hinge point 14 with the seat 3. This spring element biases the seat in its upright position with upright back.
  • Figures 1 to 6 show the chair in its normal position, ie. with upright back.
  • Figures 2 and 5 show the chair with a maximum reclined back. From a comparison of Figures 1 and 2 it can be seen that in this position, the seat is displaced to the front edge of the chair (to the left in the figures), with its front edge is slightly raised due to the inclined guide surfaces 6, its trailing edge by the pivoting of the mounting end is raised slightly higher so that the seat slightly reduces its basic inclination slightly.
  • Figures 3 and 6 show the chair in its asymmetrical position, in which the right side support is inclined backwards and its left side support occupies the substantially vertical position.
  • the left edge of the chair remains approximately at the level of the position of FIG. 1, the right edge of the chair approximately in the position of Fig. 2, and the seat undergoes a rotation in a view in the counterclockwise direction, which is shown in FIG. 6 can be seen.
  • FIGS. 1 to 6 For reasons of clarity, the upper side of the backrest is shown in FIGS. 1 to 6 only with the backrest bars and the strut 11. It goes without saying itself, that a suitable covering of an elastic material can be provided here.
  • Figures 8 and 9 show details of the sliding bearing in a side sectional view and a front sectional view, respectively, wherein preferably a plain bearing is used right and left front.
  • a guide plate 61 is fixed to the seat frame 2, which has an approximately U-shaped cross section (Fig. 9) and in the center forwardly has an opening for a slider 41.
  • the guide plate 61 is mounted obliquely on the frame 2 (FIG. 8) and thus forms the oblique guide surfaces 6.
  • the slider further includes a ball bearing 44 which engages a ball head 42.
  • the ball head is fastened by means of a screw 31 to the seat plate 3.
  • the slider 41 is slidably mounted on the guide plate 61, so that a displacement of the seat (right / left in Fig. 8) leads to a reduction or increase in the seat, at the same time due to the ball bearing and the ball head, a pivoting of the seat possible is.
  • Fig. 9 which shows the slide bearing in a neutral position, it can be seen that the edges of the guide plates 61 do not extend completely into the grooves 43, but leave a clearance at the groove base. Due to this, it is possible to displace the seat plate 3 with respect to the frame 2.
  • the chair according to the invention is preferably designed as a conference or visitor chair, it is shown in the above embodiment as a four-legged chair. However, it is also possible to run the office chair as a known office swivel chair or armchair with a bogie.

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 chair, in particular a conference or visitor chair, which allows a coupled movement of a seat (3) and a backrest. The seat in this case is mounted in sliding bearings (4) comprising oblique guide surfaces (6) and is displaced and raised in the sliding bearings through a mounting end (5) of the backrest. According to the invention, two separate backrest bars (11) are provided, which are connected to the mounting ends (5), wherein the backrest bars can be moved independently of each other. In this way, different seat positions can be realised. Besides an upright standard position, an inclined high position and an asymmetrical position, in which a one-sided load of a backrest bar (11) can be realised, with a corresponding displacement and rotation of the seat (3).

Description

Stuhl, insbesondere Bürostuhl  Chair, especially office chair
Die Erfindung bezieht sich auf einen Stuhl, insbesondere einen Bürostuhl mit einem bewegbaren Sitz und einer bewegbaren Lehne, wobei eine Lehnenbewegung mit einer Sitzbewegung gekoppelt ist. The invention relates to a chair, in particular an office chair with a movable seat and a movable backrest, wherein a backrest movement is coupled with a seat movement.
Derartige Stühle sind meist als Bürodrehstühle mit aufwendigen Synchronmechaniken zur Bewegungskopplung versehen. Ein Beispiel dafür zeigt die WO Such chairs are usually provided as office swivel chairs with elaborate synchronous mechanisms for movement coupling. An example of this is shown by the WO
2014/029696 AI . Bei diesem bekannten Stuhl besteht ferner die Möglichkeit, dass er sich auf unterschiedliche Belastungen auf den beiden Seiten des Stuhls anpassen kann und auf diese Weise den Sitzkomfort weiter steigert, indem der Sitz seitlich kippbar gelagert ist. 2014/029696 AI. In this known chair there is also the possibility that he can adapt to different loads on the two sides of the chair and in this way further increases the comfort by the seat is tilted side mounted.
Ein Stuhl mit einer verdreh- und verschwenkbaren Sitzfläche ist aus der EP 2 508 102 Bl bekannt. A chair with a rotatable and pivotable seat is known from EP 2 508 102 Bl.
Aufwendige Sitzmechaniken sind in der Regel nur für hochwertige Bürodrehstühle oder Sessel geeignet. Dabei besteht ein zunehmender Bedarf auch bei einfacheren Stühlen wie sogenannten Konferenzstühlen oder Besucherstühlen den Sitzkomfort zu verbessern. Elaborate seat mechanisms are usually only suitable for high-quality office swivel chairs or armchairs. There is an increasing need for even simpler chairs such as so-called conference chairs or visitor chairs to improve the seating comfort.
Dementsprechend liegt der Erfindung die Aufgabe zu Grunde einen Stuhl mit einer vereinfachten Sitzmechanik anzugeben, die kostengünstig zu realisieren ist und den Sitzkomfort weiter verbessert. Accordingly, the invention is based on the object to provide a chair with a simplified seat mechanism, which is inexpensive to implement and further improves the comfort.
Die Lösung dieser Aufgabe erfolgt durch einen Stuhl gemäß Anspruch 1 ; die abhängigen Ansprüche betreffen vorteilhafte Ausgestaltungen der Erfindung . The solution of this task is carried out by a chair according to claim 1; the dependent claims relate to advantageous embodiments of the invention.
Erfindungsgemäß umfasst der Stuhl ein Grundgestell mit einem Sitz und einer Lehne, die zwei Seitenträger aufweist, die unabhängig voneinander verschwenkbar am Sitz und am Grundgestellt angelenkt sind, wobei der Sitz am Grundgestell verschiebbar gelagert ist. Durch die Kopplung der Seitenträger mit dem Sitz wird durch eine Verschwenkung der Lehne der Sitz verschoben, so dass der Benutzer eine zurückgelehnte Ruheposition einnehmen kann. According to the invention, the chair comprises a base frame with a seat and a back, which has two side supports, which pivot independently of each other Seat and hinged to the base, the seat is slidably mounted on the base frame. By coupling the side support with the seat is moved by pivoting the back of the seat, so that the user can take a reclined rest position.
Da die Seitenträger unabhängig voneinander verschwenkbar sind, kann sich der Stuhl auf unterschiedliche seitliche Belastungen, die auf die Lehne wirken, einstellen. Since the side members are independently pivotable, the chair can adjust to different lateral loads acting on the backrest.
Vorzugsweise weist jeder der Seitenträger ein abgewinkeltes Montageende, insbesondere in L-Form, auf, dessen einer Schenkel mit dem Hinterende des Sitzes mittels eines Kugelgelenkes verbunden ist und dessen anderer Schenkel einen Lehnenholm aufweist. Durch die Wahl der Dimensionierung der Schenkel bzw. der Befestigungspunkte kann eine gewünschte Größe der Verschiebung des Sitzes realisiert werden. Des Weiteren kann bei dieser Ausgestaltung gleichzeitig eine Verschwenkung der Lehne in eine Hubbewegung des Sitzes neben der Verschiebebewegung umgesetzt werden. Preferably, each of the side support on an angled mounting end, in particular in L-shape, on, one leg of which is connected to the rear end of the seat by means of a ball joint and the other leg has a backrest rail. By choosing the dimensioning of the legs or the attachment points, a desired size of the displacement of the seat can be realized. Furthermore, in this embodiment, at the same time a pivoting of the backrest in a lifting movement of the seat can be implemented in addition to the sliding movement.
Dabei kann die Sitzbewegung insbesondere dadurch unterstützt werden, dass die Vorderkante des Sitzes in mindestens einem Gleitlager gelagert ist. In this case, the seat movement can be supported in particular by the fact that the front edge of the seat is mounted in at least one sliding bearing.
Vorzugsweise weist das Gleitlager schräge Führungsflächen auf und besitzt einen zu beiden Seiten definierten Freiraum. Auf diese Weise wird einem Konstrukteur ein weiterer Freiheitsgrad zur Einstellung des sogenannten Synchronverhältnisses bzw. der Sitzposition gegeben und zum anderen die Rückstellkraft der Rückenlehne proportional zum Körpergewicht des Nutzers übertragen. Preferably, the sliding bearing has inclined guide surfaces and has a free space defined on both sides. In this way, a designer is given a further degree of freedom for setting the so-called synchronous ratio or the seating position and, secondly, the restoring force of the backrest is transmitted proportionally to the body weight of the user.
In Kombination mit der Hubbewegung aufgrund der Verschwenkung der Lehne und der Verschiebebewegung in den schrägen Führungsflächen können somit verschiedene Sitzstellungen realisiert werden, beispielsweise eine Parallelverschiebung des Sitzes, indem der Hub aufgrund der Lehnenverschränkung und der Hub aufgrund der Verschiebung in den schrägen Führungsflächen gleichmäßig ist, oder eine Neigung und Verdrehung des Sitzes entsprechend des seitlichen Freiraumes der Gleitlagerung, wenn die Hübe unterschiedlich sind. Vorzugsweise sind Federelemente vorgesehen, die einerseits am Sitz, andererseits am Grundgestell befestigt sind und dadurch den Stuhl in seine Normalstellung vorspannen und den Benutzer beim Zurücklehen einen Basis-Widerstand der Lehne bereitstellen. In combination with the lifting movement due to the pivoting of the back and the sliding movement in the inclined guide surfaces thus different seating positions can be realized, for example, a parallel displacement of the seat by the stroke is even due to the Lehnenverschränkung and the stroke due to the shift in the inclined guide surfaces, or a tilt and rotation of the seat according to the lateral free space of the sliding bearing when the strokes are different. Preferably, spring elements are provided, which are fastened on the one hand to the seat, on the other hand to the base frame and thereby bias the chair into its normal position and provide the user with a basic resistance of the backrest while reclining.
Vorzugsweise sind die Seitenträger über mindestens eine Strebe miteinander verbunden, die beispielsweise an den Seitenträgern elastisch angelenkt sind und/oder selbst elastisch ausgebildet sind. Preferably, the side supports are connected to each other via at least one strut, which are articulated elastically, for example, on the side supports and / or are themselves formed elastically.
Vorzugsweise sind die Gleitlager so ausgeführt, dass sie eine Verdrehung des Sitzes in seiner Sitzebene gestatten. Auf diese Weise kann bei einer einseitigen Belastung der Lehne der Sitz eine Verschwenkung nur eines Seitenträgers folgen, wodurch der Sitzkomfort weiter erhöht wird . Preferably, the sliding bearings are designed so that they allow a rotation of the seat in its seating plane. In this way, in the case of a one-sided loading of the backrest of the seat, a pivoting of only one side support can follow, as a result of which the sitting comfort is further increased.
Ein Ausführungsbeispiel der Erfindung wird anhand der beigefügten Zeichnungen erläutert. Dabei zeigen : An embodiment of the invention will be explained with reference to the accompanying drawings. Showing:
Fig. 1 eine schematische Seitenansicht eines Stuhls in Normalstellung, 1 is a schematic side view of a chair in normal position,
Fig. 2 eine schematische Seitenansicht eines Stuhls mit maximal geneigter Lehne, 2 is a schematic side view of a chair with a maximum inclined back,
Fig. 3 eine schematische Seitenansicht eines Stuhls mit einseitig geneigter Lehne, 3 is a schematic side view of a chair with unilaterally inclined back,
Figuren 4 bis 6 entsprechende Darstellungen der Figuren 1 bis 3 in Aufsicht, FIGS. 4 to 6 representations of FIGS. 1 to 3 in plan view,
Fig. 7 eine schematische Darstellung zur Erläuterung des Bewegungskonzeptes, 7 is a schematic representation for explaining the movement concept,
Fig. 8 eine schematische Schnittdarstellung eines Gleitlagers in Seitenansicht, und Fig. 8 is a schematic sectional view of a sliding bearing in side view, and
Fig. 9 eine schematische Schnittdarstellung des Gleitlagers in Vorderansicht. Fig. 9 is a schematic sectional view of the sliding bearing in front view.
Für die folgende Beschreibung sei angemerkt, dass sich die Begriffe„oben",„unten",„vorne",„hinten",„rechts",„links" jeweils auf die normale Stuhlposition beziehen. Gemäß den Figuren 1 bis 6 umfasst der erfindungsgemäße Stuhl ein Grundgestell mit vier Beinen 1, die an einem Sitzgestell 2 starr befestigt sind . For the following description, it should be noted that the terms "top,""bottom,""front,""rear,""right,""left" refer to the normal chair position, respectively. According to the figures 1 to 6, the chair according to the invention comprises a base frame with four legs 1, which are rigidly fixed to a seat frame 2.
Auf dem Sitzgestell 2 ist ein Sitz 3 gelagert, und zwar an der Vorderkannte in einem Gleitlager 4 und an seiner Hinterkante an dem Montageende 5 eines Seitenträgers. Das Montageende 5 ist abgewinkelt ausgebildet, etwa L-förmig, und ist mit einem Schenkel mit der Hinterkante des Sitzes 3 verbunden. Der andere Schenkel trägt einen Lehnenholm 7. On the seat frame 2, a seat 3 is mounted, namely at the front edge in a sliding bearing 4 and at its rear edge at the mounting end 5 of a side support. The mounting end 5 is angled, approximately L-shaped, and is connected to a leg with the trailing edge of the seat 3. The other leg carries a backrest rail. 7
Wie insbesondere aus den Figuren 4 bis 6 ersichtlich ist, ist der Stuhl symmetrisch aufgebaut, d .h. die oben beschriebene Struktur ist auf beiden Seiten des Stuhls vorgesehen. Aus diesen Figuren ist auch ersichtlich, dass die Lehnenholme an ihrem oberen Ende durch eine Strebe 8, die mit den Lehnenholmen gelenkig verbunden ist oder Eigenelastizität aufweist. As can be seen in particular from Figures 4 to 6, the chair is symmetrical, ie. the structure described above is provided on both sides of the chair. It can also be seen from these figures that the backrest spars have at their upper end by a strut 8, which is hinged to the backrest struts or inherent elasticity.
Aus der Fig. 2 ist ferner ein Stützelement 9 ersichtlich, dass jeweils den Lehnenholm 7 mit dem Grundgestell verbindet. From Fig. 2, a support member 9 is further seen that each joins the backrest rail 7 with the base frame.
Das Bewegungskonzept des erfindungsgemäßen Stuhls wird nunmehr anhand der Fig. 7 erläutert, in der gleiche Bezugsziffern wie in den Figuren 1 bis 6 für entsprechende Teile verwendet wurden, wobei die schrägen Führungsflächen 6 an dem Grundgestell 2 dargestellt sind . The movement concept of the chair according to the invention will now be explained with reference to FIG. 7, in which the same reference numerals have been used as in Figures 1 to 6 for corresponding parts, wherein the inclined guide surfaces 6 are shown on the base frame 2.
Der Seitenträger umfasst den Lehnenholm 7 und das Montageende 5, die starr miteinander verbunden sind und ihrerseits gelenkig mit dem Stützelement 9 in einem Drehpunkt 12 verbunden sind . Ferner ist aus dieser Figur ersichtlich, dass das Montageende 5 in einem Gelenkpunkt 13 mit dem Sitz 3 im Bereich seiner Hinterkante verbunden ist. The side support comprises the backrest spar 7 and the mounting end 5, which are rigidly connected to each other and in turn are pivotally connected to the support member 9 in a pivot point 12. Furthermore, it can be seen from this figure that the mounting end 5 is connected in a hinge point 13 with the seat 3 in the region of its rear edge.
Bei einer Neigung des Seitenträgers nach hinten wird der Seitenträger um den Drehpunkt 12 verschwenkt, und das Montageende 5 überträgt diese Bewegung über den Gelenkpunkt 13 auf den Sitz 3 und verschiebt diesen zur Vorderkante des Stuhls (links in Fig. 7), wobei der Sitz entlang der schrägen Führungsfläche 6 in dem Gleitlager 4 geführt wird . Gleichzeitig wird der Sitz im Bereich seiner Hinterkante durch das Verschwenken des Seitenträgers angehoben. Durch geeignete Di- mensionierung der Führungsflächen und des Montageendes 5 kann der Hub des Sitzes im Bereich seiner Vorderkante bzw. im Bereich seiner Hinterkante eingestellt werden. With a slope of the side support to the rear of the side support is pivoted about the pivot point 12, and the mounting end 5 transmits this movement on the hinge point 13 on the seat 3 and moves it to the front edge of the chair (left in Fig. 7), the seat along the oblique guide surface 6 is guided in the sliding bearing 4. At the same time the seat is raised in the region of its rear edge by pivoting the side support. By suitable di- dimensioning of the guide surfaces and the mounting end 5, the stroke of the seat in the region of its leading edge or in the region of its trailing edge can be adjusted.
Des Weiteren zeigt Fig. 7 schematisch ein Federelement 10, das einerseits in einem Gelenkpunkt 15 mit dem Grundgestell verbunden ist, andererseits in einem Gelenkpunkt 14 mit dem Sitz 3. Dieses Federelement spannt den Sitz in seine aufrechte Position mit senkrecht stehender Lehne vor. Furthermore, Fig. 7 shows schematically a spring element 10 which is connected on the one hand in a hinge point 15 to the base frame, on the other hand in a hinge point 14 with the seat 3. This spring element biases the seat in its upright position with upright back.
Die verschiedenen Stellungen des Stuhls sind am besten aus den Figuren 1 bis 6 ersichtlich. So zeigen die Figuren 1 und 4 den Stuhl in seiner Normalposition, d .h. mit aufgerichteter Lehne. The different positions of the chair are best seen in Figures 1 to 6. Thus, Figures 1 and 4 show the chair in its normal position, ie. with upright back.
Die Figuren 2 und 5 zeigen den Stuhl mit maximal zurückgeneigter Lehne. Aus einem Vergleich der Figuren 1 und 2 ist ersichtlich, dass in dieser Stellung der Sitz zur Vorderkante des Stuhls (nach links in den Figuren) verschoben ist, wobei seine Vorderkante aufgrund der schrägen Führungsflächen 6 geringfügig angehoben ist, seine Hinterkante durch die Schwenkung des Montageendes etwas höher angehoben ist, so dass der Sitz insgesamt seine Grundneigung leicht verringert. Figures 2 and 5 show the chair with a maximum reclined back. From a comparison of Figures 1 and 2 it can be seen that in this position, the seat is displaced to the front edge of the chair (to the left in the figures), with its front edge is slightly raised due to the inclined guide surfaces 6, its trailing edge by the pivoting of the mounting end is raised slightly higher so that the seat slightly reduces its basic inclination slightly.
Schließlich zeigen die Figuren 3 und 6 den Stuhl in seiner asymmetrischen Stellung, bei der der rechte Seitenträger nach hinten geneigt ist und sein linker Seitenträger die im Wesentlichen senkrechte Stellung einnimmt. Dabei verbleibt die linke Kante des Stuhls etwa in Höhe der Position der Fig . 1, die rechte Kante des Stuhls etwa in Position der Fig. 2, und der Sitz erfährt eine Drehung in Aufsicht im Gegenuhrzeigersinn, was aus Fig . 6 ersichtlich ist. Finally, Figures 3 and 6 show the chair in its asymmetrical position, in which the right side support is inclined backwards and its left side support occupies the substantially vertical position. In this case, the left edge of the chair remains approximately at the level of the position of FIG. 1, the right edge of the chair approximately in the position of Fig. 2, and the seat undergoes a rotation in a view in the counterclockwise direction, which is shown in FIG. 6 can be seen.
Durch diese Kinematik wird einerseits im Sinne einer Synchronmechanik ein Zurücklehen unterstützt andererseits wird durch eine kombinierte Bewegung des Sitzes und des entsprechenden Lehnenträgers ein seitliches Zurücklehnen unterstützt wodurch ein bequemes und dynamisches Sitzen ermöglicht wird . By this kinematics, on the one hand in the sense of a synchronous mechanism a reclining supported on the other hand is supported by a combined movement of the seat and the corresponding backrest support a lateral reclining whereby a comfortable and dynamic sitting is possible.
Aus Gründen der Übersichtlichkeit ist in den Figuren 1 bis 6 die Oberseite der Lehne nur mit den Lehnenholmen und der Strebe 11 dargestellt. Es versteht sich von selbst, dass hier eine geeignete Bespannung aus einem elastischen Material vorgesehen sein kann . For reasons of clarity, the upper side of the backrest is shown in FIGS. 1 to 6 only with the backrest bars and the strut 11. It goes without saying itself, that a suitable covering of an elastic material can be provided here.
Die Figuren 8 und 9 zeigen Einzelheiten des Gleitlagers in einer Seiten- Schnittansicht bzw. einer Vorder-Schnittansicht, wobei vorzugsweise jeweils ein Gleitlager rechts und links vorn verwendet wird . Figures 8 and 9 show details of the sliding bearing in a side sectional view and a front sectional view, respectively, wherein preferably a plain bearing is used right and left front.
Wie aus diesen Figuren ersichtlich ist, ist pro Gleitlager ein Führungsblech 61 am Sitzgestell 2 befestigt, das einen etwa U-förmigen Querschnitt aufweist (Fig. 9) und in der Mitte nach vorn eine Öffnung für ein Gleitstück 41 aufweist. Das Führungsblech 61 ist schräg am Gestell 2 befestigt (Fig. 8) und bildet somit die schrägen Führungsflächen 6. As can be seen from these figures, per slide bearing a guide plate 61 is fixed to the seat frame 2, which has an approximately U-shaped cross section (Fig. 9) and in the center forwardly has an opening for a slider 41. The guide plate 61 is mounted obliquely on the frame 2 (FIG. 8) and thus forms the oblique guide surfaces 6.
Die Ränder der Öffnungen des Führungsblechs 61 greifen in Seitennuten 43 des Gleitstücks 41 ein. Das Gleitstück umfasst ferner eine Kugellagerung 44, die mit einem Kugelkopf 42 in Eingriff steht. Der Kugelkopf ist mittels einer Schraube 31 an der Sitzplatte 3 befestigt. The edges of the openings of the guide plate 61 engage in side grooves 43 of the slider 41 a. The slider further includes a ball bearing 44 which engages a ball head 42. The ball head is fastened by means of a screw 31 to the seat plate 3.
Erfindungsgemäß ist das Gleitstück 41 gleitend an dem Führungsblech 61 gelagert, so dass eine Verschiebung des Sitzes (rechts/links in Fig . 8) zu einer Absenkung bzw. Anhebung des Sitzes führt, wobei gleichzeitig aufgrund der Kugellagerung und des Kugelkopfes eine Verschwenkung des Sitzes möglich ist. According to the slider 41 is slidably mounted on the guide plate 61, so that a displacement of the seat (right / left in Fig. 8) leads to a reduction or increase in the seat, at the same time due to the ball bearing and the ball head, a pivoting of the seat possible is.
Aus der Fig . 9, die das Gleitlager in einer neutralen Position zeigt, ist ersichtlich, dass sich die Ränder der Führungsbleche 61 nicht vollständig in die Nuten 43 erstrecken, sondern am Nutgrund einen Freiraum lassen. Aufgrund dessen ist es möglich, die Sitzplatte 3 in Bezug auf das Gestell 2 zu verschieben bzw. zu verdrehen. From Fig. 9, which shows the slide bearing in a neutral position, it can be seen that the edges of the guide plates 61 do not extend completely into the grooves 43, but leave a clearance at the groove base. Due to this, it is possible to displace the seat plate 3 with respect to the frame 2.
Da der erfindungsgemäße Stuhl vorzugsweise als Konferenz- oder Besucherstuhl konzipiert ist, ist er in dem vorstehenden Ausführungsbeispiel als vierbeiniger Stuhl dargestellt. Es ist jedoch auch möglich, den Bürostuhl als an sich bekannten Bürodrehstuhl oder -sessel mit einem Drehgestell auszuführen. Since the chair according to the invention is preferably designed as a conference or visitor chair, it is shown in the above embodiment as a four-legged chair. However, it is also possible to run the office chair as a known office swivel chair or armchair with a bogie.

Claims

Patentansprüche claims
1. Stuhl, insbesondere Bürostuhl mit einem Grundgestell (1, 2) einem Sitz (3) und einer Lehne, wobei die Lehne zwei Seitenträger aufweist, die unabhängig voneinander verschwenkbar am Sitz (3) und an dem Grundgestell (1, 2) angelenkt sind, wobei der Sitz (3) am Grundgestell verschiebbar so gelagert ist, dass eine Verschwenkung der Seitenträger eine Verschiebung des Sitzes (3) bewirkt. 1. chair, in particular office chair with a base frame (1, 2) a seat (3) and a backrest, wherein the backrest has two side supports which are pivotable independently of each other pivotally on the seat (3) and on the base frame (1, 2) , wherein the seat (3) is slidably mounted on the base frame so that a pivoting of the side support causes a displacement of the seat (3).
2. Stuhl nach Anspruch 1, wobei jeder Seitenträger ein abgewinkeltes Montageende (5) aufweist, dessen einer Schenkel mit dem Hinterende des Sitzes (3) verbunden ist und dessen anderer Schenkel einen Lehnenholm (7) aufweist. 2. Chair according to claim 1, wherein each side support has an angled mounting end (5), one leg of which is connected to the rear end of the seat (3) and the other leg has a backrest spar (7).
3. Stuhl nach Anspruch 1 oder 2, wobei der Sitz (3) im Bereich seiner Vorderkante in mindestens einem Gleitlager (4) gelagert ist. 3. Chair according to claim 1 or 2, wherein the seat (3) is mounted in the region of its front edge in at least one sliding bearing (4).
4. Stuhl nach Anspruch 1, 2 oder 3, wobei jedes Gleitlager (4) eine schräge Führungsfläche (6) aufweist. 4. Chair according to claim 1, 2 or 3, wherein each sliding bearing (4) has an inclined guide surface (6).
5. Stuhl nach einem der Ansprüche 3 oder 4, wobei die Gleitlager so ausgebildet sind, dass sie neben einer Verschiebung eine Verdrehung des Sitzes zulassen. 5. Chair according to one of claims 3 or 4, wherein the sliding bearings are designed so that they allow a displacement of the seat in addition to a displacement.
6. Stuhl nach einem der Ansprüche 3 bis 5, wobei die Gleitlager ein Gleitstück (41) mit einer Kugellagerung (44) und einem Kugelkopf (42) aufweisen. 6. Chair according to one of claims 3 to 5, wherein the sliding bearing has a slider (41) with a ball bearing (44) and a ball head (42).
7. Stuhl nach einem der vorstehenden Ansprüche mit einem Federelement (10), das einerseits am Sitz (3), andererseits am Grundgestell befestigt ist. 7. Chair according to one of the preceding claims with a spring element (10), on the one hand on the seat (3), on the other hand fixed to the base frame.
8. Stuhl nach Anspruch 7, wobei das Federelement bei einer Verschiebung des Sitzes belastet wird. 8. Chair according to claim 7, wherein the spring element is loaded during a displacement of the seat.
9. Stuhl nach einem der Ansprüche 2 bis 8 mit einer Strebe, die die Lehnenholme miteinander verbindet, wobei die Strebe an die Lehnenholme angelenkt ist und/oder Eigenelastizität aufweist. 9. Chair according to one of claims 2 to 8 with a strut, which connects the backrests together, wherein the strut is hinged to the backrests and / or having inherent elasticity.
EP15777711.1A 2014-10-13 2015-10-13 Chair, in particular office chair Not-in-force EP3206533B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014220695.2A DE102014220695A1 (en) 2014-10-13 2014-10-13 Chair, especially office chair
PCT/EP2015/073638 WO2016059031A1 (en) 2014-10-13 2015-10-13 Chair, in particular office chair

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EP3206533A1 true EP3206533A1 (en) 2017-08-23
EP3206533B1 EP3206533B1 (en) 2018-10-10

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EP15777711.1A Not-in-force EP3206533B1 (en) 2014-10-13 2015-10-13 Chair, in particular office chair

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US (1) US10206508B2 (en)
EP (1) EP3206533B1 (en)
DE (1) DE102014220695A1 (en)
WO (1) WO2016059031A1 (en)

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USD893903S1 (en) * 2018-04-27 2020-08-25 Trendler, Inc. Bar stool base having wood legs

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Also Published As

Publication number Publication date
EP3206533B1 (en) 2018-10-10
DE102014220695A1 (en) 2016-04-28
US10206508B2 (en) 2019-02-19
WO2016059031A1 (en) 2016-04-21
US20180035804A9 (en) 2018-02-08
US20170231391A1 (en) 2017-08-17

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