EP3345508A1 - Seat with one-piece seat shell - Google Patents

Seat with one-piece seat shell Download PDF

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Publication number
EP3345508A1
EP3345508A1 EP18150177.6A EP18150177A EP3345508A1 EP 3345508 A1 EP3345508 A1 EP 3345508A1 EP 18150177 A EP18150177 A EP 18150177A EP 3345508 A1 EP3345508 A1 EP 3345508A1
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EP
European Patent Office
Prior art keywords
seat
chair
backrest
support frame
flexible intermediate
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
EP18150177.6A
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German (de)
French (fr)
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EP3345508B1 (en
Inventor
Martin Ballendat
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DESIGN BALLENDAT GmbH
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Design Ballendat GmbH
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Publication date
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Publication of EP3345508A1 publication Critical patent/EP3345508A1/en
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    • 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
    • A47C1/034—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest
    • A47C1/035—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest in combination with movably coupled seat and back-rest, i.e. the seat and back-rest being movably coupled in such a way that the extension mechanism of the foot-rest is actuated at least by the relative movements of seat and backrest
    • 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
    • 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
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/12—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats with shell-shape seat and back-rest unit, e.g. having arm rests

Definitions

  • the invention relates to a chair with a one-piece seat shell.
  • the invention is therefore an object of the invention to provide a chair that is characterized by a simple construction and at the same time has a stable seating area and a stable backrest area.
  • the chair according to the invention comprises a support frame and a one-piece seat shell arranged on the support frame, which comprises a seat element and a backrest element. Between the seat element and the backrest element, a flexible intermediate element is arranged.
  • the seat element is positionally adjustable in chair longitudinal direction due to the flexible intermediate element mechanically uncoupled to the backrest element relative to the support frame.
  • the backrest element is positionally adjustable in Guatemalarochraum due to the flexible intermediate element mechanically uncoupled to the seat member relative to the support frame.
  • the seat element and the backrest element are also due to the flexible intermediate element about at least one at least partially extending in the chair longitudinal direction axis to each other.
  • Positional adjustment is the adjustment of the position of a chair element to suit a user.
  • a chair element is thus adjustable from a first position to a second position and locked there. From the position adjustment is to distinguish the seat shell movement, which describes the movement reaction of the seat member to movements of the user. If a user leans, for example, in chair transverse direction, the seat shell can at least partially follow the user movement. After taking back motion-causing force, the seat returns to its original position.
  • both the seat element and the backrest element are substantially rigid in themselves and a flexible intermediate element is arranged between these two elements, a relatively stable seating area and a relatively stable backrest area are realized with a simultaneously simple construction.
  • the flexible intermediate element allows the seat element to be positionally adjustable in the chair longitudinal direction without this position adjustment having an influence on the position of the backrest element.
  • the flexible intermediate element namely follows in its transition region to the seat element of the adjustment of the position to the same extent. At the same time, the position of the flexible intermediate element remains unchanged backrest element side and thus also the position of the backrest element remains unchanged.
  • the flexible intermediate element allows the backrest element to be positionally adjustable in the chair upwards direction without this positional adjustment having an influence on the position of the seat element.
  • the flexible intermediate element follows namely in its transition region to the backrest element of the adjustment of the position to the same extent.
  • the position of the flexible intermediate element remains unchanged on the seat element side and thus also the position of the seat element remains unchanged.
  • the seat element and the backrest element can be pivoted relative to each other about at least one axis extending at least partially in the chair longitudinal direction.
  • a pivoting the seat element in chair transverse direction at a first angle to a pivoting of the backrest element by a second angle wherein the two angles can be unequal size.
  • a movement of one of the two elements leads to a torsion of the one-piece seat shell due to the flexible intermediate element.
  • a pivoting of the backrest element to one side with respect to a vertical chair longitudinal center plane can lead to a pivoting of the seat element in the opposite direction with respect to the vertical chair longitudinal center plane.
  • the seat shell is designed as a one-piece plastic injection molded part.
  • the chair can be produced in a simple manner and a permanently dimensionally stable seat shell can be ensured.
  • the one-piece plastic injection-molded part is a multi-component injection-molded part, in particular a two-component injection-molded part.
  • the seat element and the backrest element are formed from a first plastic component and the intermediate element is formed from a second plastic component.
  • the intermediate element has a convex course projecting in the direction of the rear of the chair in a cross section along a vertical chair longitudinal center plane.
  • the convex profile causes the length of the intermediate element is substantially extended compared to a direct connection between the seat element and the backrest element.
  • an intermediate element is formed, which holds material to compensate for positional adjustments of the seat member and the backrest member.
  • the larger the bulbous course of the intermediate element the larger the position adjustment paths of the seat element and the backrest element can be.
  • the support frame comprises a support unit which carries the seat shell and preferably comprises a synchronous mechanism.
  • the support unit comprises a pivot unit for the seat element and a pivot arm for the backrest element.
  • the pivoting unit serves to tilt the seat element in the chair transverse direction and is located directly on the seat element.
  • the seat element relative to the pivoting unit is displaceable.
  • the pivot arm supports the backrest element and serves to pivot the backrest element about a pivot axis in chair transverse direction.
  • the backrest element is displaceable relative to the pivoting arm.
  • the intermediate element serves as a restoring element for the backrest element, that is, by means of the intermediate element ensures that the backrest element is held in its unloaded state or in the absence of a laterally acting tilting force in a central position in which a Vertical axis of the backrest element viewed in the chair longitudinal direction has a vertical orientation.
  • an additional return spring which engages a column of the backrest element.
  • a chair 2 which comprises a support frame 10 and arranged on the support frame 10 one-piece seat shell 20.
  • the support frame 10 has in the illustrated embodiment, five support arms 11, which are each provided with a bottom-side roller 13.
  • the support frame can also be a support frame with four chair legs.
  • the support frame 10 comprises a support unit 14, which carries the seat shell 20.
  • the support unit 14 in turn comprises a synchronizing mechanism, a pivoting unit 12 and a pivoting arm 16.
  • the one-piece seat shell 20 comprises a seat element 22 and a backrest element 26.
  • the seat shell 20 comprises a flexible intermediate element 24 which is arranged between the seat element 22 and the backrest element 26 and inseparably connected to both elements 22, 26.
  • the pivot unit 12 of the support unit 14 carries the seat member 22 and serves to tilt the seat member 22 in chair transverse direction.
  • the pivot arm 16 of the support unit 14 engages the backrest element 26 and serves to pivot the backrest element 26 about a pivot axis 17 in chair transverse direction.
  • the pivoting unit 12 of the support unit 14 also serves to pivot the seat element 22 and the backrest element 26 in the chair longitudinal direction.
  • the pivoting unit 12 is designed such that the seat member 22 is pivotable about at least one Wegelementschwenkachse 19a and the backrest element 26 is pivotable about a scholarlehenelementschwenkachse 19b.
  • the seat shell 20 is designed as a two-component injection-molded part, wherein the seat element 22 and the backrest element 26 are formed from a rigid first component and the flexible intermediate element 24 is formed from a second flexible component.
  • the intermediate element 24 has a convex course projecting in the direction of the rear of the chair in a cross-section along a vertical chair longitudinal center plane, such as in particular FIG. 2 shows.
  • the width of the connection region of the intermediate element 24 on the seat element side corresponds to the width of the connection region of the seat element 22.
  • the width of the connection region of the intermediate element 24 corresponds to the width of the connection region of the backrest element 26 on the backrest element side.
  • the backrest element 26 has on its rear side a holding web 28 on which the swivel arm 16 engages. Between the holding web 28 and the pivot arm 16, a sliding bearing is formed.
  • the seat member 22 is positionally adjustable in chair longitudinal direction L due to the flexible intermediate member 24 mechanically uncoupled to the backrest member 26 relative to the support frame 10.
  • the backrest element 26 in chair vertical direction H due to the flexible intermediate member 24 is mechanically uncoupled to the seat member 22 relative to the support frame 10 positionally adjustable. Because of its flexibility, the intermediate element 24 serves to allow a positional adjustment of the seat element 22 and / or the backrest element 26, without influencing the position of the respective other element 22, 26.
  • FIGS 3 and 4 show the seat member 22 and the backrest element 26 due to the flexible intermediate member 24 about at least one at least partially extending in the chair longitudinal direction axis to each other.
  • the Figures 3 and 4 show that the backrest element 26 is tilted by a larger angle in chair transverse direction than the seat member 22. The backrest element 26 is thus pivoted relative to the seat member 22.
  • a user may initiate movement into the seat pan 20, to which the seat pan 20 reacts with corresponding movement of the seat member 22 and the seatback member 26. It is also possible that the seat shell 20 can twist so that the seat member 22 against the direction of movement of the backrest element 26 is movable.

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

Es wird ein Stuhl vorgeschlagen, umfassend ein Trägergestell (10) und eine auf dem Trägergestell (10) angeordnete einteilige Sitzschale (20), welche ein Sitzelement (22) und ein Rückenlehnenelement (26) umfasst, zwischen welchen ein flexibles Zwischenelement (24) angeordnet ist, wobei das Sitzelement (22) in Stuhllängsrichtung aufgrund des flexiblen Zwischenelements (24) mechanisch ungekoppelt zu dem Rückenlehnenelement (26) gegenüber dem Trägergestell (10) positionseinstellbar ist, und das Rückenlehnenelement (26) in Stuhlhochrichtung aufgrund des flexiblen Zwischenelements (24) mechanisch ungekoppelt zu dem Sitzelement (22) gegenüber dem Trägergestell (10) positionseinstellbar ist, und das Sitzelement (22) und das Rückenlehnenelement (26) aufgrund des flexiblen Zwischenelements (24) um mindestens eine sich zumindest teilweise in Stuhllängsrichtung erstreckende Achse zueinander verschwenkbar sind.A chair is proposed, comprising a support frame (10) and a one-piece seat shell (20) arranged on the support frame (10), which comprises a seat element (22) and a backrest element (26), between which a flexible intermediate element (24) is arranged is, wherein the seat member (22) in the chair longitudinal direction due to the flexible intermediate member (24) mechanically uncoupled to the backrest element (26) relative to the support frame (10) position adjustable, and the backrest element (26) in Stuhlhochrichtung due to the flexible intermediate element (24) mechanically uncoupled to the seat member (22) relative to the support frame (10) is positionally adjustable, and the seat member (22) and the backrest element (26) due to the flexible intermediate member (24) about at least one at least partially extending in chair longitudinal direction axis to each other.

Description

Die Erfindung betrifft einen Stuhl mit einer einteiligen Sitzschale.The invention relates to a chair with a one-piece seat shell.

Es sind Stühle mit einer einteiligen Sitzschale bekannt, welche einen Sitzbereich und einen Rückenlehnenbereich umfassen. Derartige Stühle weisen jedoch entweder keinen ausreichend stabilen Sitzbereich und Rückenlehnenbereich und/oder keine einfache Konstruktion auf.There are chairs with a one-piece seat known, which include a seating area and a backrest area. However, such chairs either do not have a sufficiently stable seating area and backrest area and / or no simple construction.

Der Erfindung liegt daher die Aufgabe zugrunde, einen Stuhl zu schaffen, der sich durch eine einfache Konstruktion auszeichnet und gleichzeitig einen stabilen Sitzbereich und einen stabilen Rückenlehnenbereich aufweist.The invention is therefore an object of the invention to provide a chair that is characterized by a simple construction and at the same time has a stable seating area and a stable backrest area.

Diese Aufgabe ist erfindungsgemäß durch den Stuhl mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by the chair with the features of claim 1.

Der Stuhl nach der Erfindung umfasst ein Trägergestell und eine auf dem Trägergestell angeordnete einteilige Sitzschale, welche ein Sitzelement und ein Rückenlehnenelement umfasst. Zwischen dem Sitzelement und dem Rückenlehnenelement ist ein flexibles Zwischenelement angeordnet. Das Sitzelement ist in Stuhllängsrichtung aufgrund des flexiblen Zwischenelements mechanisch ungekoppelt zu dem Rückenlehnenelement gegenüber dem Trägergestell positionseinstellbar. Das Rückenlehnenelement ist in Stuhlhochrichtung aufgrund des flexiblen Zwischenelements mechanisch ungekoppelt zu dem Sitzelement gegenüber dem Trägergestell positionseinstellbar. Das Sitzelement und das Rückenlehnenelement sind zudem aufgrund des flexiblen Zwischenelements um mindestens eine sich zumindest teilweise in Stuhllängsrichtung erstreckende Achse zueinander verschwenkbar.The chair according to the invention comprises a support frame and a one-piece seat shell arranged on the support frame, which comprises a seat element and a backrest element. Between the seat element and the backrest element, a flexible intermediate element is arranged. The seat element is positionally adjustable in chair longitudinal direction due to the flexible intermediate element mechanically uncoupled to the backrest element relative to the support frame. The backrest element is positionally adjustable in Stuhlhochrichtung due to the flexible intermediate element mechanically uncoupled to the seat member relative to the support frame. The seat element and the backrest element are also due to the flexible intermediate element about at least one at least partially extending in the chair longitudinal direction axis to each other.

Unter Positionseinstellung ist die Verstellung der Position eines Stuhlelements zur Anpassung an einen Nutzer zu verstehen. Ein Stuhlelement ist somit von einer ersten Position in eine zweite Position verstellbar und dort arretierbar. Von der Positionseinstellung ist die Sitzschalenbewegung zu unterscheiden, welche die Bewegungsreaktion des Sitzelements auf Bewegungen des Nutzers beschreibt. Lehnt sich ein Nutzer beispielsweise in Stuhlquerrichtung, kann die Sitzschale zumindest abschnittsweise der Nutzerbewegung folgen. Nach Rücknahme bewegungsverursachenden Kraft kehrt die Sitzschale wieder in ihre Ausgangslage zurück.Positional adjustment is the adjustment of the position of a chair element to suit a user. A chair element is thus adjustable from a first position to a second position and locked there. From the position adjustment is to distinguish the seat shell movement, which describes the movement reaction of the seat member to movements of the user. If a user leans, for example, in chair transverse direction, the seat shell can at least partially follow the user movement. After taking back motion-causing force, the seat returns to its original position.

Dadurch, dass sowohl das Sitzelement wie auch das Rückenlehnenelement in sich weitestgehend starr ausgebildet sind und zwischen diesen beiden Elementen ein flexibles Zwischenelement angeordnet ist, werden ein relativ stabiler Sitzbereich und ein relativ stabiler Rückenlehnenbereich bei gleichzeitig einfacher Konstruktion realisiert.Due to the fact that both the seat element and the backrest element are substantially rigid in themselves and a flexible intermediate element is arranged between these two elements, a relatively stable seating area and a relatively stable backrest area are realized with a simultaneously simple construction.

Das flexible Zwischenelement ermöglicht, dass das Sitzelement in Stuhllängsrichtung positionseinstellbar ist, ohne dass diese Positionseinstellung einen Einfluss auf die Position des Rückenlehnenelements hat. Das flexible Zwischenelement folgt nämlich in seinem Übergangsbereich zu dem Sitzelement der Verstellung der Position in gleichem Maße nach. Zugleich bleibt die Position des flexiblen Zwischenelements rückenlehnenelementseitig unverändert und somit bleibt auch die Position des Rückenlehnenelements unverändert.The flexible intermediate element allows the seat element to be positionally adjustable in the chair longitudinal direction without this position adjustment having an influence on the position of the backrest element. The flexible intermediate element namely follows in its transition region to the seat element of the adjustment of the position to the same extent. At the same time, the position of the flexible intermediate element remains unchanged backrest element side and thus also the position of the backrest element remains unchanged.

Gleichsam ermöglicht das flexible Zwischenelement, dass das Rückenlehnenelement in Stuhlhochrichtung positionseinstellbar ist, ohne dass diese Positionseinstellung einen Einfluss auf die Position des Sitzelements hat. Das flexible Zwischenelement folgt nämlich in seinem Übergangsbereich zu dem Rückenlehnenelement der Verstellung der Position in gleichem Maße nach. Zugleich bleibt die Position des flexiblen Zwischenelements sitzelementseitig unverändert und somit bleibt auch die Position des Sitzelements unverändert.Similarly, the flexible intermediate element allows the backrest element to be positionally adjustable in the chair upwards direction without this positional adjustment having an influence on the position of the seat element. The flexible intermediate element follows namely in its transition region to the backrest element of the adjustment of the position to the same extent. At the same time, the position of the flexible intermediate element remains unchanged on the seat element side and thus also the position of the seat element remains unchanged.

Zudem sind das Sitzelement und das Rückenlehnenelement aufgrund des flexiblen Zwischenelements um mindestens eine sich zumindest teilweise in Stuhllängsrichtung erstreckende Achse zueinander verschwenkbar. So kann beispielsweise ein Verschwenken des Sitzelements in Stuhlquerrichtung um einen ersten Winkel zu einem Verschwenken des Rückenlehnenelements um einen zweiten Winkel erfolgen, wobei die beiden Winkel ungleich groß sein können. Es ist zudem möglich, dass eine Bewegung eines der beiden Elemente zu einer Torsion der einteiligen Sitzschale führt und zwar aufgrund des flexiblen Zwischenelements. So kann beispielsweise ein Verschwenken des Rückenlehnenelements zu einer Seite bezüglich einer vertikalen Stuhllängsmittelebene zu einem Verschwenken des Sitzelements in die entgegengesetzte Richtung bezüglich der vertikalen Stuhllängsmittelebene führen.In addition, due to the flexible intermediate element, the seat element and the backrest element can be pivoted relative to each other about at least one axis extending at least partially in the chair longitudinal direction. For example, a pivoting the seat element in chair transverse direction at a first angle to a pivoting of the backrest element by a second angle, wherein the two angles can be unequal size. It is also possible that a movement of one of the two elements leads to a torsion of the one-piece seat shell due to the flexible intermediate element. For example, a pivoting of the backrest element to one side with respect to a vertical chair longitudinal center plane can lead to a pivoting of the seat element in the opposite direction with respect to the vertical chair longitudinal center plane.

Aufgrund des Zwischenelements ist zudem keine aufwändige Konstruktion nötig, um einen derartigen Stuhl zu gewährleisten.Due to the intermediate element also no complex construction is necessary to ensure such a chair.

Bei einer bevorzugten Ausführungsform des Stuhls nach der Erfindung ist die Sitzschale als einteiliges Kunststoff-Spritzgußteil ausgeführt. Durch eine derartige Ausführungsform kann der Stuhl in einfacher Weise herstellbar sein und eine dauerhaft formstabile Sitzschale gewährleistet werden.In a preferred embodiment of the chair according to the invention, the seat shell is designed as a one-piece plastic injection molded part. By such an embodiment, the chair can be produced in a simple manner and a permanently dimensionally stable seat shell can be ensured.

Bei einer weiteren bevorzugten Ausführungsform des Stuhls nach der Erfindung ist das einteilige Kunststoff-Spritzgußteil ein Mehrkomponenten-Spritzgußteil, insbesondere ein Zweikomponenten-Spritzgußteil. Bei einer derartigen Ausführungsform sind das Sitzelement und das Rückenlehnenelement aus einer ersten Kunststoff-Komponente und das Zwischenelement aus einer zweiten Kunststoff-Komponente gebildet.In a further preferred embodiment of the chair according to the invention, the one-piece plastic injection-molded part is a multi-component injection-molded part, in particular a two-component injection-molded part. In such an embodiment, the seat element and the backrest element are formed from a first plastic component and the intermediate element is formed from a second plastic component.

Bei einer weiteren bevorzugten Ausführungsform des Stuhls nach der Erfindung weist das Zwischenelement einen in einem Querschnitt entlang einer vertikalen Stuhllängsmittelebene verlaufenden in Richtung Stuhlrückseite ragenden konvexen Verlauf auf. Der konvexe Verlauf führt dazu, dass die Länge des Zwischenelements gegenüber einer direkten Verbindung zwischen dem Sitzelement und dem Rückenlehnenelement wesentlich verlängert ist. Somit ist ein Zwischenelement ausgebildet, welches Material zum Ausgleich von Positionseinstellungen des Sitzelements und des Rückenlehnenelements bereithält. Je größer der bauchige Verlauf des Zwischenelements ist, desto größer können auch die Positionseinstellungswege des Sitzelements und des Rückenlehnenelements sein.In a further preferred embodiment of the chair according to the invention, the intermediate element has a convex course projecting in the direction of the rear of the chair in a cross section along a vertical chair longitudinal center plane. The convex profile causes the length of the intermediate element is substantially extended compared to a direct connection between the seat element and the backrest element. Thus, an intermediate element is formed, which holds material to compensate for positional adjustments of the seat member and the backrest member. The larger the bulbous course of the intermediate element, the larger the position adjustment paths of the seat element and the backrest element can be.

Bei einer weiteren bevorzugten Ausführungsform des Stuhls nach der Erfindung umfasst das Trägergestell eine Trageinheit, welche die Sitzschale trägt und umfasst vorzugsweise eine Synchronmechanik. Durch eine derartige Trageinheit kann eine weitere Verbesserung des Bewegungsverhaltens des Stuhls auf Bewegungen des Nutzers erfolgen.In a further preferred embodiment of the chair according to the invention, the support frame comprises a support unit which carries the seat shell and preferably comprises a synchronous mechanism. By means of such a carrying unit, a further improvement of the movement behavior of the chair on movements of the user can take place.

Bei einer weiteren bevorzugten Ausführungsform des Stuhls nach der Erfindung umfasst die Trageinheit eine Schwenkeinheit für das Sitzelement und einen Schwenkarm für das Rückenlehnenelement. Die Schwenkeinheit dient dem Verkippen des Sitzelements in Stuhlquerrichtung und liegt direkt an dem Sitzelement an. Zur Positionseinstellung des Sitzelements ist das Sitzelement gegenüber der Schwenkeinheit verschiebbar. Der Schwenkarm stützt das Rückenlehnenelement und dient dem Verschwenken des Rückenlehnenelements um eine Schwenkachse in Stuhlquerrichtung. Zur Positionseinstellung des Rückenlehnenelements ist das Rückenlehnenelement gegenüber dem Schwenkarm verschiebbar.In a further preferred embodiment of the chair according to the invention, the support unit comprises a pivot unit for the seat element and a pivot arm for the backrest element. The pivoting unit serves to tilt the seat element in the chair transverse direction and is located directly on the seat element. For adjusting the position of the seat element, the seat element relative to the pivoting unit is displaceable. The pivot arm supports the backrest element and serves to pivot the backrest element about a pivot axis in chair transverse direction. For adjusting the position of the backrest element, the backrest element is displaceable relative to the pivoting arm.

Bei einer speziellen Ausführungsform des Stuhls nach der Erfindung dient das Zwischenelement als Rückstellelement für das Rückenlehnenelement, das heißt mittels des Zwischenelements wird gewährleistet, dass das Rückenlehnenelement in seinem unbelasteten Zustand bzw. beim Fehlen einer seitlich wirkenden Kippkraft in einer Mittellage gehalten wird, in der eine Hochachse des Rückenlehnenelements in Stuhllängsrichtung betrachtet eine vertikale Ausrichtung hat. Gegebenenfalls kann auf eine zusätzliche Rückstellfeder verzichtet werden, die an einer Säule des Rückenlehnenelements angreift.In a particular embodiment of the chair according to the invention, the intermediate element serves as a restoring element for the backrest element, that is, by means of the intermediate element ensures that the backrest element is held in its unloaded state or in the absence of a laterally acting tilting force in a central position in which a Vertical axis of the backrest element viewed in the chair longitudinal direction has a vertical orientation. Optionally, can be dispensed with an additional return spring which engages a column of the backrest element.

Weitere Vorteile und vorteilhafte Ausgestaltungen des Gegenstandes der Erfindung sind der Beschreibung, der Zeichnung und den Schutzansprüchen entnehmbar.Further advantages and advantageous embodiments of the subject matter of the invention are the description, the drawing and the claims removed.

Ein Ausführungsbeispiel eines Stuhls nach der Erfindung ist in der Zeichnung schematisch vereinfacht dargestellt und wird in der nachfolgenden Beschreibung näher erläutert. Es zeigt:

Figur 1
eine perspektivische Ansicht eines Stuhls nach der Erfindung;
Figur 2
eine Seitenansicht des Stuhls nach Figur 1;
Figur 3
eine Frontansicht des Stuhls nach Figur 1 in einer Kippstellung; und
Figur 4
eine Rückansicht des Stuhls nach Figur 1 in einer Kippstellung nach Figur 3.
An embodiment of a chair according to the invention is shown schematically simplified in the drawing and will be explained in more detail in the following description. It shows:
FIG. 1
a perspective view of a chair according to the invention;
FIG. 2
a side view of the chair behind FIG. 1 ;
FIG. 3
a front view of the chair behind FIG. 1 in a tilted position; and
FIG. 4
a rear view of the chair behind FIG. 1 in a tilted position FIG. 3 ,

In der Zeichnung ist ein Stuhl 2 dargestellt, der ein Trägergestell 10 und eine auf dem Trägergestell 10 angeordnete einteilige Sitzschale 20 umfasst. Das Trägergestell 10 weist in der dargestellten Ausführungsform fünf Trägerarme 11 auf, welche jeweils mit einer bodenseitigen Rolle 13 versehen sind. Das Trägergestell kann jedoch auch ein Trägergestell mit vier Stuhlbeinen sein.In the drawing, a chair 2 is shown, which comprises a support frame 10 and arranged on the support frame 10 one-piece seat shell 20. The support frame 10 has in the illustrated embodiment, five support arms 11, which are each provided with a bottom-side roller 13. However, the support frame can also be a support frame with four chair legs.

Das Trägergestell 10 umfasst eine Trageinheit 14, welche die Sitzschale 20 trägt. Die Trageinheit 14 wiederum umfasst eine Synchronmechanik, eine Schwenkeinheit 12 und einen Schwenkarm 16.The support frame 10 comprises a support unit 14, which carries the seat shell 20. The support unit 14 in turn comprises a synchronizing mechanism, a pivoting unit 12 and a pivoting arm 16.

Die einteilige Sitzschale 20 umfasst ein Sitzelement 22 und ein Rückenlehnenelement 26. Zudem umfasst die Sitzschale 20 ein flexibles Zwischenelement 24, welches zwischen dem Sitzelement 22 und dem Rückenlehnenelement 26 angeordnet und mit beiden Elementen 22, 26 untrennbar verbunden ist.The one-piece seat shell 20 comprises a seat element 22 and a backrest element 26. In addition, the seat shell 20 comprises a flexible intermediate element 24 which is arranged between the seat element 22 and the backrest element 26 and inseparably connected to both elements 22, 26.

Die Schwenkeinheit 12 der Trageinheit 14 trägt das Sitzelement 22 und dient dem Kippen des Sitzelements 22 in Stuhlquerrichtung. Der Schwenkarm 16 der Trageinheit 14 greift an dem Rückenlehnenelement 26 an und dient dem Verschwenken des Rückenlehnenelements 26 um eine Schwenkachse 17 in Stuhlquerrichtung. Die Schwenkeinheit 12 der Trageinheit 14 dient zudem einem Verschwenken des Sitzelements 22 und des Rückenlehnenelements 26 in Stuhllängsrichtung. Bei dem gezeigten Ausführungsbeispiel ist die Schwenkeinheit 12 derart ausgeführt, dass das Sitzelement 22 um zumindest eine Sitzelementschwenkachse 19a verschwenkbar ist und das Rückenlehnenelement 26 um eine Rückenlehnenelementschwenkachse 19b verschwenkbar ist. Dadurch kann bei Verschwenkung des Sitzelements 22 und des Rückenlehnenelements 26 in gleiche Bewegungsrichtungen ein ungleiches Verschwenkungsmaß unterstützt und/oder realisiert werden, wobei keine mechanische Kopplung zwischen dem Rückenlehnenelement 26 und dem Sitzelement 22 vorliegt.The pivot unit 12 of the support unit 14 carries the seat member 22 and serves to tilt the seat member 22 in chair transverse direction. The pivot arm 16 of the support unit 14 engages the backrest element 26 and serves to pivot the backrest element 26 about a pivot axis 17 in chair transverse direction. The pivoting unit 12 of the support unit 14 also serves to pivot the seat element 22 and the backrest element 26 in the chair longitudinal direction. In the embodiment shown, the pivoting unit 12 is designed such that the seat member 22 is pivotable about at least one Sitzelementschwenkachse 19a and the backrest element 26 is pivotable about a Rückenlehnenelementschwenkachse 19b. As a result, an unequal Verschwenkungsmaß supported and / or realized when pivoting the seat member 22 and the backrest member 26 in the same directions of movement, with no mechanical coupling between the backrest member 26 and the seat member 22 is present.

Die Sitzschale 20 ist als Zweikomponenten-Spritzgußteil ausgebildet, wobei das Sitzelement 22 und das Rückenlehnenelement 26 aus einer starren ersten Komponente gebildet sind und das flexible Zwischenelement 24 aus einer zweiten flexiblen Komponente gebildet ist.The seat shell 20 is designed as a two-component injection-molded part, wherein the seat element 22 and the backrest element 26 are formed from a rigid first component and the flexible intermediate element 24 is formed from a second flexible component.

Das Zwischenelement 24 weist einen in einem Querschnitt entlang einer vertikalen Stuhllängsmittelebene verlaufenden in Richtung Stuhlrückseite ragenden konvexen Verlauf auf, wie insbesondere Figur 2 zeigt. Die Breite des Anschlussbereiches des Zwischenelements 24 sitzelementseitig entspricht der Breite des Anschlussbereichs des Sitzelements 22. Zudem entspricht die Breite des Anschlussbereiches des Zwischenelements 24 rückenlehnenelementseitig der Breite des Anschlussbereichs des Rückenlehnenelements 26.The intermediate element 24 has a convex course projecting in the direction of the rear of the chair in a cross-section along a vertical chair longitudinal center plane, such as in particular FIG. 2 shows. The width of the connection region of the intermediate element 24 on the seat element side corresponds to the width of the connection region of the seat element 22. In addition, the width of the connection region of the intermediate element 24 corresponds to the width of the connection region of the backrest element 26 on the backrest element side.

Das Rückenlehnenelement 26 weist an seiner Rückseite einen Haltesteg 28 auf, an welchem der Schwenkarm 16 angreift. Zwischen dem Haltesteg 28 und dem Schwenkarm 16 ist ein Gleitlager ausgebildet.The backrest element 26 has on its rear side a holding web 28 on which the swivel arm 16 engages. Between the holding web 28 and the pivot arm 16, a sliding bearing is formed.

Ein weiteres Gleitlager ist zudem gebildet zwischen dem Sitzelement 22 und der Schwenkeinheit 12 der Trageinheit 14. Das Sitzelement 22 ist in Stuhllängsrichtung L aufgrund des flexiblen Zwischenelements 24 mechanisch ungekoppelt zu dem Rückenlehnenelement 26 gegenüber dem Trägergestell 10 positionseinstellbar. Zudem ist das Rückenlehnenelement 26 in Stuhlhochrichtung H aufgrund des flexiblen Zwischenelements 24 mechanisch ungekoppelt zu dem Sitzelement 22 gegenüber dem Trägergestell 10 positionseinstellbar. Das Zwischenelement 24 dient nämlich aufgrund seiner Flexibilität dazu, eine Positionseinstellung des Sitzelements 22 und/oder des Rückenlehnenelements 26 zuzulassen, ohne die Position des jeweils anderen Elements 22, 26 zu beeinflussen.Another sliding bearing is also formed between the seat member 22 and the pivot unit 12 of the support unit 14. The seat member 22 is positionally adjustable in chair longitudinal direction L due to the flexible intermediate member 24 mechanically uncoupled to the backrest member 26 relative to the support frame 10. In addition, the backrest element 26 in chair vertical direction H due to the flexible intermediate member 24 is mechanically uncoupled to the seat member 22 relative to the support frame 10 positionally adjustable. Because of its flexibility, the intermediate element 24 serves to allow a positional adjustment of the seat element 22 and / or the backrest element 26, without influencing the position of the respective other element 22, 26.

Wie die Figuren 3 und 4 zeigen, sind das Sitzelement 22 und das Rückenlehnenelement 26 aufgrund des flexiblen Zwischenelements 24 um mindestens eine sich zumindest teilweise in Stuhllängsrichtung erstreckende Achse zueinander verschwenkbar. Die Figuren 3 und 4 zeigen nämlich beispielhaft, dass das Rückenlehnenelement 26 um einen größeren Winkel in Stuhlquerrichtung verkippt ist als das Sitzelement 22. Das Rückenlehnenelement 26 ist folglich bezüglich des Sitzelements 22 verschwenkt.As the Figures 3 and 4 show the seat member 22 and the backrest element 26 due to the flexible intermediate member 24 about at least one at least partially extending in the chair longitudinal direction axis to each other. The Figures 3 and 4 For example, show that the backrest element 26 is tilted by a larger angle in chair transverse direction than the seat member 22. The backrest element 26 is thus pivoted relative to the seat member 22.

Somit kann ein Nutzer eine Bewegung in die Sitzschale 20 einleiten, auf welche die Sitzschale 20 mit entsprechender Bewegung des Sitzelements 22 und des Rückenlehnenelements 26 reagiert. Es ist zudem möglich, dass sich die Sitzschale 20 derart tordieren lässt, dass das Sitzelement 22 entgegen der Bewegungsrichtung des Rückenlehnenelements 26 bewegbar ist.Thus, a user may initiate movement into the seat pan 20, to which the seat pan 20 reacts with corresponding movement of the seat member 22 and the seatback member 26. It is also possible that the seat shell 20 can twist so that the seat member 22 against the direction of movement of the backrest element 26 is movable.

Claims (7)

Stuhl, umfassend
ein Trägergestell (10) und
eine auf dem Trägergestell (10) angeordnete einteilige Sitzschale (20), welche
ein Sitzelement (22) und ein Rückenlehnenelement (26) umfasst, zwischen welchen
ein flexibles Zwischenelement (24) angeordnet ist, wobei
das Sitzelement (22) in Stuhllängsrichtung aufgrund des flexiblen Zwischenelements (24) mechanisch ungekoppelt zu dem Rückenlehnenelement (26) gegenüber dem Trägergestell (10) positionseinstellbar ist, und
das Rückenlehnenelement (26) in Stuhlhochrichtung aufgrund des flexiblen Zwischenelements (24) mechanisch ungekoppelt zu dem Sitzelement (22) gegenüber dem Trägergestell (10) positionseinstellbar ist, und
das Sitzelement (22) und das Rückenlehnenelement (26) aufgrund des flexiblen Zwischenelements (24) um mindestens eine sich zumindest teilweise in Stuhllängsrichtung erstreckende Achse zueinander verschwenkbar sind.Chair, comprising
a support frame (10) and
a on the support frame (10) arranged one-piece seat shell (20), which
a seat element (22) and a backrest element (26) between which
a flexible intermediate element (24) is arranged, wherein
the seat element (22) in the chair longitudinal direction due to the flexible intermediate element (24) is mechanically uncoupled to the backrest element (26) relative to the support frame (10) positionally adjustable, and
the backrest element (26) in chair upright direction due to the flexible intermediate member (24) is mechanically uncoupled to the seat member (22) relative to the support frame (10) position adjustable, and
the seat element (22) and the backrest element (26) can be pivoted relative to one another about at least one axis extending at least partially in the chair longitudinal direction on account of the flexible intermediate element (24). Stuhl nach Anspruch 1, wobei
die Sitzschale (20) als einteiliges Kunststoff-Spritzgussteil ausgeführt ist.A chair according to claim 1, wherein
the seat shell (20) is designed as a one-piece plastic injection-molded part. Stuhl nach Anspruch 2, wobei
das einteilige Kunststoff-Spritzgussteil ein Mehrkomponenten-Spritzgussteil, insbesondere ein Zweikomponenten-Spritzgussteil ist.A chair according to claim 2, wherein
the one-piece plastic injection-molded part is a multi-component injection molded part, in particular a two-component injection molded part. Stuhl nach einem der Ansprüche 1 bis 3, wobei
das Zwischenelement (24) einen in einem Querschnitt entlang einer vertikalen Stuhllängsmittelebene verlaufenden in Richtung Stuhlrückseite ragenden konvexen Verlauf aufweist.Chair according to one of claims 1 to 3, wherein
the intermediate element (24) in a cross section along a vertical Chair longitudinal center plane extending toward the chair back protruding convex course. Stuhl nach einem der Ansprüche 1 bis 4, wobei
das Trägergestell (10) eine Trageinheit (14) umfasst, welche die Sitzschale (20) trägt und vorzugsweise eine Synchronmechanik umfasst.Chair according to one of claims 1 to 4, wherein
the support frame (10) comprises a support unit (14), which carries the seat shell (20) and preferably comprises a synchronizing mechanism. Stuhl nach Anspruch 5, wobei
die Trageinheit (14) eine Schwenkeinheit (12) für das Sitzelement (22) und einen Schwenkarm (16) für das Rückenlehnenelement (26) umfasst.Chair according to claim 5, wherein
the support unit (14) comprises a pivot unit (12) for the seat element (22) and a pivot arm (16) for the backrest element (26). Stuhl nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Zwischenelement als Rückstellelement für das Rückenlehnenelement dient, so dass das Rückenlehnenelement in unbelastetem Zustand eine Mittellage einnimmt.Chair according to one of claims 1 to 6, characterized in that the intermediate element serves as a restoring element for the backrest element, so that the backrest element occupies a central position in the unloaded state.
EP18150177.6A 2017-01-04 2018-01-03 Seat with one-piece seat shell Active EP3345508B1 (en)

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DE102017100117 2017-01-04
DE202017102909.3U DE202017102909U1 (en) 2017-01-04 2017-05-15 Chair with one-piece seat shell

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Also Published As

Publication number Publication date
EP3345507B1 (en) 2020-04-29
US10499742B2 (en) 2019-12-10
EP3345507A1 (en) 2018-07-11
US20180184809A1 (en) 2018-07-05
EP3345508B1 (en) 2020-06-17
DE202017102909U1 (en) 2018-04-05

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