EP2670279B1 - Synchron mechanics - Google Patents

Synchron mechanics Download PDF

Info

Publication number
EP2670279B1
EP2670279B1 EP12703437.9A EP12703437A EP2670279B1 EP 2670279 B1 EP2670279 B1 EP 2670279B1 EP 12703437 A EP12703437 A EP 12703437A EP 2670279 B1 EP2670279 B1 EP 2670279B1
Authority
EP
European Patent Office
Prior art keywords
support
backrest
seat
seat support
pivot
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.)
Active
Application number
EP12703437.9A
Other languages
German (de)
French (fr)
Other versions
EP2670279A1 (en
Inventor
Hermann Bock
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.)
Bock 1 GmbH and Co KG
Original Assignee
Bock 1 GmbH and Co KG
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 Bock 1 GmbH and Co KG filed Critical Bock 1 GmbH and Co KG
Publication of EP2670279A1 publication Critical patent/EP2670279A1/en
Application granted granted Critical
Publication of EP2670279B1 publication Critical patent/EP2670279B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • A47C1/03255—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

Definitions

  • the invention relates to a synchronous mechanism for a correlated seat-backrest movement of an office chair, with a placeable on a chair column base support, a seat support and a backrest support.
  • synchronous mechanism assemblies are understood in the seat base of an office chair, which provide for a coupled, a certain relative movement of the seat and backrest with each other bringing kinematics.
  • On the seat support of the usually provided with a padded seat seat of the office chair is mounted.
  • the backrest support which extends in a conventional manner from the actual synchronizing mechanism to the rear, carries on an upwardly extending arm, the backrest of the office chair.
  • Seat support and backrest support are usually coupled so articulated that a pivoting movement of the backrest to the rear - as can be caused for example by leaning of the chair user to the backrest - induces a lowering movement of the rear edge of the seat down.
  • pivoting resistance of the backrest can be adjusted depending on the weight of the user.
  • synchronizing mechanisms usually have a more or less complex spring arrangement for preloading the synchronizing mechanism.
  • a synchronous mechanism for a correlated seat-backrest movement of an office chair having a base support placeable on a chair column, a seat support, and a seat back support, and wherein the seatback support at the rear end of the seat is pivotally connected to the seat support and pivoted to the base support forms and wherein the base support forms a pivotal connection with the front end of the seat support.
  • An object of the present invention is to provide a synchronous mechanism, which is structurally particularly simple and therefore inexpensive to produce and yet provides the ease of use of a conventional synchronizing mechanism.
  • the synchronous mechanism should require no or only a few or weak spring elements.
  • the seat support directly d. H. directly and without the use of a coupling element, such as a handlebar or the like, is pivotally connected to the rear end of the base support, wherein at the same time connected directly to the base support, namely pivotable about a transverse axis on the base support backrest support is pivotally connected to the seat support such that a Pivoting movement of the backrest to the rear induced a lifting movement of the front portion of the seat support.
  • a basic idea of the invention is that the user of the office chair lifts himself up by a load on the backrest. In other words, the user works while pressing the synchronous mechanism by pushing back the back against his own, resting on the seat weight.
  • the desired swivel resistance thus arises, as it were, automatically due to the weight of the user.
  • Known from the prior art spring arrangements for adjusting the Swinging resistance eg in the form of several parallel-connected compression or tension springs
  • complex adjustment mechanisms worm gears, gears, threaded rods, etc.
  • the required for the "self-adjusting" mechanics of the present invention lever geometry is achieved in that the pivot axis of the connection of the backrest support with the base support seen in the seat longitudinal direction behind the hinge axis of the connection of the backrest support is arranged with the seat support.
  • the front region of the seat support is raised during a pivoting of the backrest. This increases the distance between the front portion of the seat support and the base support, while the rear portion of the seat support remains firmly connected to the base support. There is thus a tilting of the seat to the rear about the pivot axis of the seat carrier base support connection in a defined relationship to the movement of the backrest. This gives the desired synchronizing effect, in which the angle of the seat support to the backrest support changes.
  • the user's weight directly affects the swing resistance felt by the user.
  • a light user must overcome a significantly lower swing resistance when pivoting than a heavy user.
  • the same "perceived" resistance arises when pivoting the backrest for each user.
  • Due to the arrangement of the pivot bearing and joints and their configuration, the synchronous movement of the seat support can be adjusted individually to the requirements imposed on the chair. Thus, for example, by a change in the distance between the Schenklagern or joints adjustable how strong the seat support tends to pivot during a backrest.
  • the present synchronous mechanism is characterized by the fact that it is particularly flat, so that a corresponding assembly requires very little space. At the same time, the mechanics are extremely simple.
  • the desired synchronous movement can be realized with the three known components backrest support, base support and seat support, which are interconnected by means of only three articulation points.
  • the synchronous mechanism has a base support 1, which is set by means of a cone seat 2 on the upper end of a chair column (not shown).
  • the synchronous mechanism comprises a substantially frame-shaped seat support 3 and a fork-shaped in plan view backrest support 4, the cheeks 5 are arranged on both sides of the base support 1.
  • the seat support 3 is provided for receiving or mounting a preferably padded seat (not shown). The assembly is done using not shown fasteners in the usual way.
  • a backrest not shown, is attached, which is height adjustable in modern office chairs.
  • the backrest can also be integrally connected to the backrest support 4.
  • the entire synchronous mechanism is mirror-symmetrical with respect to the central longitudinal plane, as far as the actual kinematics is concerned. In that regard, in the following description is always present on both sides in pairs Design elements of the actual swing mechanism go out.
  • Fig. 1 the basic position is shown, in which the seat support 3 is arranged substantially horizontally.
  • Fig. 2 shows the synchronizing mechanism in a rearwardly pivoted position of the backrest support 4. The front portion of the seat support 3 is raised.
  • the rear region 25 of the seat support 3 is articulated directly on the base support, with the aid of a bearing pin 6 on a first pivot bearing 27 of the base support 1.
  • the seat support 3 can thus be pivoted about a transverse pivot axis 13.
  • first mounting leg 12 of the seat support 3 extend from the support plate 11 of the seat support 3 down toward the base support 1. Since the pivot bearing 27 is disposed at the rear end 9 of the base support 1, and seat support and / or seats are pivoted undisturbed, which protrude beyond the trailing edge of the base support 1, without the need for this special and expensive constructive measures.
  • the backrest support 4 is articulated directly to a second pivot bearing 28 of the base support 1 with a cheek 5 extending in the direction of the seat leading edge 8 with the aid of a bearing journal 6.
  • the backrest support 4 can thus move about a transverse pivot axis 15 from the home position to a pivoted-back position.
  • the second pivot bearing 28 is located in the seat longitudinal direction 14 seen approximately in the center of the base support 1, and immediately before the cone seat. 2
  • the backrest support 4 is also connected directly to the seat support 3 articulated, more precisely, with second mounting legs 19 of the seat support 3, which extend from the support plate 11 of the seat support 3 down towards the base support 1.
  • Backrest support 4 and seat support 3 are thus pivotable about a transverse hinge axis 22 and at the same time slidably connected to each other in the seat longitudinal direction 14.
  • a rotational movement is in other words by the joint 16 at the same time also a translational movement possible. This is necessary in order to prevent locking of the seat support 3, because the movement path of the backrest support 4 about the second pivot axis 15 deviates from the movement path of the seat support 3 about the first pivot axis 13.
  • the defined by the articulation of the backrest support 4 on the base support 1 second pivot axis 15 is seen in the seat longitudinal direction 14 behind the defined by the articulation of the backrest support 4 on the seat support 3 hinge axis 22 arranged so that a pivoting movement of the backrest in the pivoting direction 7 about the pivot axis 15th of the second pivot bearing 28 to the rear rotation of the seat support 3 about the pivot axis 13 of the first pivot bearing 27 and thus a lifting movement 23 exclusively of the front portion 26 of the seat support 3 induced.
  • the rear portion 25 of the seat support 3 is not raised.
  • a behind the pivot axis 13 lying part of the seat (not shown) is lowered.
  • the seat support 3 is taken in the pivoting direction 7 and raised due to the lever assembly formed by the cheek 5 of the backrest support 4 by a pivoting of the backrest to the rear bottom.
  • the positions of the articulation points 15, 22 of the backrest support 4 on the base support 1 on the one hand and on the seat support 3 on the other hand define a lever element according to the invention as an integral part of the front region of the cheek 5 of the backrest support 4.
  • the distances between the first pivot axis 13 and the second pivot axis 15 and between the second pivot axis 15 and the hinge axis 22 define the synchronous ratio of the mechanism, i.
  • the selected ratio determines the lever geometry of the mechanism and determines the manner in which the seat support 3 lifts and moves synchronously to the pivoted backrest.
  • the first pivot axis 13 and the hinge axis 22 are in the non-pivoted basic position essentially at a height, while the second pivot axis 15 is arranged only slightly higher.
  • the distance 17 is in the example only 2 mm. This results u.a. a very flat design.
  • the distance 31 from the first pivot axis 13 to the second pivot axis 15 is in a particularly advantageous embodiment 107 mm and the distance 32 from the first pivot axis 13 to the hinge axis 22 is 137 mm. Also in a maximum rearwardly pivoted position of the synchronous mechanism, the order of arrangement of the axes 13, 15, 22 does not change.
  • a comparatively large distance 31, 32 to the second pivot axis 15 or to the hinge axis 22 can be produced in a structurally particularly simple manner, which results in a particularly advantageous synchronous ratio has, in which a very wide pivoting of the backrest support 4 causes only a slight lifting of the front edge 8 of the seat support 3 to the rear.
  • an embodiment has been found in which the inclination 30 of the seat support 3 to the horizontal starting position is about 5.5 °, when the backrest support 4 has a pivoting 29 of about 25 ° backwards down.
  • the vertical distance 33 between the second pivot axis 15 and the hinge axis 22 in the in Fig. 2 illustrated example 11 mm.
  • the position of the axes 13, 15, 22 causes the total pivot point of the mechanism at the beginning of the pivoting movement of the backrest to almost coincide with the actual pivot point of the chair user. This results in a particularly comfortable movement and the occurrence of negative effects, such as the so-called shirt pull-out effect, can be avoided.
  • an approximately linear mechanical characteristic curve is achieved in which the swivel resistance is approximately constant over the entire movement sequence.
  • the seat support 3 only in the front region 26th lifted, which supports the intuitive human motion sequence when pivoting backwards.
  • the pivot mechanism ensures that the backrest support 4 with the backrest about a pivot axis, here the second pivot axis 15, can be pivoted in the pivoting direction 7.
  • the pivoting movement of the backrest to the rear induces a lifting movement 23 of the front portion 26 of the seat support 3.
  • the seat support 3 executes exclusively a pivoting movement about the first pivot axis 13, while the base support 1 with its two pivot bearings 27, 28 remains fixed in position.
  • a spring assembly with one or more spring elements is a spring 21 arranged in the region of the front base support 18, which is supported on the one hand on the base support 1 and on the other hand on the cheek 5 of the backrest support 4, and which is loaded when the backrest support 4 is pivoted.
  • the spring element 21 need only be made comparatively weak, so that in total act on the components of the mechanism only small spring forces, resulting in a comparison with conventional mechanics significantly reduced stress on the components.

Description

Die Erfindung betrifft eine Synchronmechanik für eine korrelierte Sitz-Rückenlehnen-Bewegung eines Bürostuhles, mit einem auf einer Stuhlsäule plazierbaren Basisträger, einem Sitzträger und einem Rückenlehnenträger.The invention relates to a synchronous mechanism for a correlated seat-backrest movement of an office chair, with a placeable on a chair column base support, a seat support and a backrest support.

Unter der Bezeichnung "Synchronmechanik" werden Baugruppen im Sitzunterbau eines Bürostuhles verstanden, die für eine miteinander gekoppelte, eine bestimmte Relativbewegung von Sitz- und Rückenlehne zueinander mit sich bringende Kinematik sorgen. Auf dem Sitzträger ist der in aller Regel mit einer gepolsterten Sitzfläche versehene Sitz des Bürostuhles montiert. Der Rückenlehnenträger, der sich in gängiger Weise von der eigentlichen Synchronmechanik nach hinten erstreckt, trägt an einem nach oben verlaufenden Ausleger die Rückenlehne des Bürostuhles. Sitzträger und Rückenlehnenträger sind üblicherweise derart gelenkig gekoppelt, daß eine Schwenkbewegung der Rückenlehne nach hinten - wie sie beispielsweise durch ein Anlehnen des Stuhlbenutzers an die Rückenlehne hervorgerufen werden kann - eine Absenkbewegung der Hinterkante des Sitzes nach unten induziert.The term "synchronous mechanism" assemblies are understood in the seat base of an office chair, which provide for a coupled, a certain relative movement of the seat and backrest with each other bringing kinematics. On the seat support of the usually provided with a padded seat seat of the office chair is mounted. The backrest support, which extends in a conventional manner from the actual synchronizing mechanism to the rear, carries on an upwardly extending arm, the backrest of the office chair. Seat support and backrest support are usually coupled so articulated that a pivoting movement of the backrest to the rear - as can be caused for example by leaning of the chair user to the backrest - induces a lowering movement of the rear edge of the seat down.

Für eine komfortable Benutzung des Stuhles ist es von Vorteil, wenn sich der Schwenkwiderstand der Rückenlehne in Abhängigkeit von dem Gewicht des Benutzers einstellen läßt. Zur Änderung des Schwenkwiderstandes der Rückenlehne weisen derartige Synchronmechaniken zumeist eine mehr oder weniger aufwendige Federanordnung zum Vorspannen der Synchronmechanik auf.For a comfortable use of the chair, it is advantageous if the pivoting resistance of the backrest can be adjusted depending on the weight of the user. To change the pivoting resistance of the backrest, such synchronizing mechanisms usually have a more or less complex spring arrangement for preloading the synchronizing mechanism.

Aus WO 2010/094470 A2 ist eine Synchronmechanik für eine korrelierte Sitz-Rückenlehnen-Bewegung eines Bürostuhles bekannt, die einen auf einer Stuhlsäule plazierbaren Basisträger, einen Sitzträger und einen Rückenlehnenträger aufweist und wobei der Rückenlehnenträger an dem hinteren Ende des Sitzes eine Schwenkverbindung mit dem Sitzträger und eine Schwenkverbindung mit dem Basisträger ausbildet und wobei der Basisträger mit dem vorderen Ende des Sitzträgers eine Schwenkverbindung ausbildet.Out WO 2010/094470 A2 For example, there is known a synchronous mechanism for a correlated seat-backrest movement of an office chair having a base support placeable on a chair column, a seat support, and a seat back support, and wherein the seatback support at the rear end of the seat is pivotally connected to the seat support and pivoted to the base support forms and wherein the base support forms a pivotal connection with the front end of the seat support.

Eine Aufgabe der vorliegenden Erfindung ist es, eine Synchronmechanik bereitzustellen, die konstruktiv besonders einfach aufgebaut und daher kostengünstig herstellbar ist und dennoch den Benutzungskomfort einer herkömmlichen Synchronmechanik zur Verfügung stellt. Insbesondere soll die Synchronmechanik keine oder nur wenige bzw. schwache Federelemente benötigen.An object of the present invention is to provide a synchronous mechanism, which is structurally particularly simple and therefore inexpensive to produce and yet provides the ease of use of a conventional synchronizing mechanism. In particular, the synchronous mechanism should require no or only a few or weak spring elements.

Diese Aufgabe wird durch eine Synchronmechanik nach Anspruch 1 gelöst. Vorteilhafte Ausführungen der Erfindung sind in den Unteransprüchen angegeben.This object is achieved by a synchronous mechanism according to claim 1. Advantageous embodiments of the invention are specified in the subclaims.

Erfindungsgemäß ist es vorgesehen, daß der Sitzträger unmittelbar, d. h. direkt und ohne Verwendung eines Koppelelementes, wie eines Lenkers oder dergleichen, mit dem hinteren Ende des Basisträgers gelenkig verbunden ist, wobei zugleich der unmittelbar mit dem Basisträger verbundene, nämlich um eine Querachse am Basisträger verschwenkbare Rückenlehnenträger mit dem Sitzträger gelenkig verbunden ist derart, daß eine Schwenkbewegung der Rückenlehne nach hinten eine Anhebebewegung des vorderen Bereichs des Sitzträgers induziert.According to the invention it is provided that the seat support directly, d. H. directly and without the use of a coupling element, such as a handlebar or the like, is pivotally connected to the rear end of the base support, wherein at the same time connected directly to the base support, namely pivotable about a transverse axis on the base support backrest support is pivotally connected to the seat support such that a Pivoting movement of the backrest to the rear induced a lifting movement of the front portion of the seat support.

Eine grundlegende Idee der Erfindung besteht darin, daß der Benutzer des Bürostuhles sich durch eine Belastung der Rückenlehne selbst nach oben hebt. Mit anderen Worten arbeitet der Benutzer beim Betätigen der Synchronmechanik durch Zurückdrücken der Rückenlehne gegen sein eigenes, auf dem Sitz aufliegendes Gewicht. Der gewünschte Schwenkwiderstand stellt sich somit quasi selbsttätig aufgrund des Gewichtes des Benutzers ein. Aus dem Stand der Technik bekannte Federanordnungen zur Einstellung des Schwenkwiderstandes (z. B. in Gestalt mehrerer parallel geschalteter Druck- oder Zugfedern) und aufwendige Einstellmechanismen (Schneckengetriebe, Zahnräder, Gewindestangen usw.) sind nicht erforderlich. Hierdurch verringern sich die Herstellungskosten der Synchronmechanik erheblich. Zugleich erhöht sich die Ausfallsicherheit.A basic idea of the invention is that the user of the office chair lifts himself up by a load on the backrest. In other words, the user works while pressing the synchronous mechanism by pushing back the back against his own, resting on the seat weight. The desired swivel resistance thus arises, as it were, automatically due to the weight of the user. Known from the prior art spring arrangements for adjusting the Swinging resistance (eg in the form of several parallel-connected compression or tension springs) and complex adjustment mechanisms (worm gears, gears, threaded rods, etc.) are not required. This considerably reduces the manufacturing costs of the synchronous mechanism. At the same time, the reliability increases.

Die für die "selbsteinstellende" Mechanik der vorliegenden Erfindung erforderliche Hebelgeometrie wird dadurch erreicht, daß die Schwenkachse der Verbindung des Rückenlehnenträgers mit dem Basisträger in Sitzlängsrichtung gesehen hinter der Gelenkachse der Verbindung des Rückenlehnenträgers mit dem Sitzträger angeordnet ist.The required for the "self-adjusting" mechanics of the present invention lever geometry is achieved in that the pivot axis of the connection of the backrest support with the base support seen in the seat longitudinal direction behind the hinge axis of the connection of the backrest support is arranged with the seat support.

Die Anzahl der Bauteile und damit die Herstellungskosten sind besonders gering, weil sowohl der Rückenlehnenträger mit dem Basisträger, als auch der Sitzträger mit dem Basisträger unmittelbar, d.h. direkt und ohne Zwischenschaltung eines zusätzlichen Bauteils, gelenkig verbunden ist.The number of components and thus the manufacturing costs are particularly low because both the backrest support with the base support, as well as the seat support with the base support directly, i. directly and without the interposition of an additional component, hinged.

Durch die konstruktive Anordnung der Bauelemente wird bei einem Verschwenken der Rückenlehne der vordere Bereich des Sitzträgers angehoben. Hierbei vergrößert sich der Abstand zwischen dem vorderen Bereich des Sitzträgers und dem Basisträger, während der hintere Bereich des Sitzträgers mit dem basisträger fest verbunden bleibt. Es erfolgt somit ein Neigen des Sitzes nach hinten um die Schwenkachse der Sitzträger-Basisträger-Verbindung in einem definierten Verhältnis zu der Bewegung der Rückenlehne. Hierdurch gibt sich der gewünschte Synchroneffekt, bei dem sich der Winkel des Sitzträgers zum Rückenlehnenträger ändert.Due to the constructive arrangement of the components, the front region of the seat support is raised during a pivoting of the backrest. This increases the distance between the front portion of the seat support and the base support, while the rear portion of the seat support remains firmly connected to the base support. There is thus a tilting of the seat to the rear about the pivot axis of the seat carrier base support connection in a defined relationship to the movement of the backrest. This gives the desired synchronizing effect, in which the angle of the seat support to the backrest support changes.

Das Gewicht des Benutzers wirkt sich direkt auf den von dem Benutzer spürbaren Schwenkwiderstand aus. Ein leichter Benutzer muß bei einem Verschwenken einen deutlich geringeren Schwenkwiderstand überwinden, als ein schwerer Benutzer. Subjektiv ergibt sich für jeden Benutzer der gleiche "gefühlte" Widerstand beim Verschwenken der Rückenlehne. Durch die Anordnung der Schwenklager und Gelenke und deren Ausgestaltung kann die Synchronbewegung des Sitzträgers individuell an die an den Stuhl gestellten Anforderungen angepaßt werden. So ist beispielsweise durch eine Änderung des Abstandes zwischen den Schenklagern bzw. Gelenken einstellbar, wie stark sich der Sitzträger bei einem Verschwenken der Rückenlehne neigt.The user's weight directly affects the swing resistance felt by the user. A light user must overcome a significantly lower swing resistance when pivoting than a heavy user. Subjectively, the same "perceived" resistance arises when pivoting the backrest for each user. Due to the arrangement of the pivot bearing and joints and their configuration, the synchronous movement of the seat support can be adjusted individually to the requirements imposed on the chair. Thus, for example, by a change in the distance between the Schenklagern or joints adjustable how strong the seat support tends to pivot during a backrest.

Verglichen mit den aus dem Stand der Technik bekannten Lösungen wird erfindungsgemäß ein konstruktiv vergleichsweise einfacher Schwenkmechanismus vorgestellt, bei dem der sogenannte "Hemdauszieheffekt" deutlich verringert ist. Anders ausgedrückt wird ein besonders hoher Sitzkomfort erreicht, ohne daß auf aufwendigere und teure Lösungen zurückgegriffen werden muß.Compared with the solutions known from the prior art, a structurally comparatively simple pivot mechanism is inventively presented, in which the so-called "shirt extraction effect" is significantly reduced. In other words, a particularly high level of comfort is achieved, without having to resort to more expensive and expensive solutions.

Gegenüber anderen bereits bekannten "selbsteinstellenden" Mechaniken zeichnet sich die vorliegende Synchronmechanik dadurch aus, daß sie besonders flachbauend ist, so daß eine entsprechende Baugruppe nur sehr wenig Bauraum benötigt. Zugleich ist die Mechanik extrem einfach aufgebaut. Die gewünschte Synchronbewegung kann mit den drei bekannten Komponenten Rückenlehnenträger, Basisträger und Sitzträger verwirklicht werden, welche mit Hilfe von nur drei Anlenkpunkten miteinander verbunden sind.Compared to other already known "self-adjusting" mechanics, the present synchronous mechanism is characterized by the fact that it is particularly flat, so that a corresponding assembly requires very little space. At the same time, the mechanics are extremely simple. The desired synchronous movement can be realized with the three known components backrest support, base support and seat support, which are interconnected by means of only three articulation points.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnungen erläutert. Hierbei zeigen:

Fig. 1
eine Seitenansicht der Synchronmechanik in der Grundstellung, und
Fig. 2
eine Seitenansicht der Synchronmechanik in einer Nach hinten verschwenkten Stellung.
An embodiment of the invention will be explained below with reference to the drawings. Hereby show:
Fig. 1
a side view of the synchronous mechanism in the basic position, and
Fig. 2
a side view of the synchronizing mechanism in a rearward pivoted position.

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

Die Synchronmechanik weist einen Basisträger 1 auf, der mittels einer Konusaufnahme 2 auf das obere Ende einer Stuhlsäule (nicht abgebildet) gesetzt ist. Darüber hinaus umfaßt die Synchronmechanik einen im wesentlichen rahmenförmigen Sitzträger 3 und einen in Draufsicht gabelförmigen Rückenlehnenträger 4, dessen Wangen 5 zu beiden Seiten des Basisträgers 1 angeordnet sind. Der Sitzträger 3 ist zur Aufnahme oder Montage einer vorzugsweise gepolsterten Sitzfläche (nicht abgebildet) vorgesehen. Die Montage erfolgt mit Hilfe nicht näher dargestellter Befestigungselemente auf übliche Art und Weise. Am Rückenlehnenträger 4 ist eine nicht näher dargestellte Rückenlehne angebracht, die bei modernen Bürostühlen höhenverstellbar ist. Die Rückenlehne kann mit dem Rückenlehnenträger 4 auch einstückig verbunden sein.The synchronous mechanism has a base support 1, which is set by means of a cone seat 2 on the upper end of a chair column (not shown). In addition, the synchronous mechanism comprises a substantially frame-shaped seat support 3 and a fork-shaped in plan view backrest support 4, the cheeks 5 are arranged on both sides of the base support 1. The seat support 3 is provided for receiving or mounting a preferably padded seat (not shown). The assembly is done using not shown fasteners in the usual way. On the backrest support 4, a backrest, not shown, is attached, which is height adjustable in modern office chairs. The backrest can also be integrally connected to the backrest support 4.

Die gesamte Synchronmechanik ist bezüglich der Mittellängsebene, was die eigentliche Kinematik betrifft, spiegelsymmetrisch aufgebaut. Insoweit ist bei der folgenden Beschreibung immer von beiderseits paarweise vorhanden Konstruktionselementen der eigentlichen Schwenkmechanik auszugehen.The entire synchronous mechanism is mirror-symmetrical with respect to the central longitudinal plane, as far as the actual kinematics is concerned. In that regard, in the following description is always present on both sides in pairs Design elements of the actual swing mechanism go out.

In Fig. 1 ist die Grundposition gezeigt, bei welcher der Sitzträger 3 im wesentlichen waagerecht angeordnet ist. Fig. 2 zeigt die Synchronmechanik in einer nach hinten geschwenkten Stellung des Rückenlehnenträgers 4. Der vordere Bereich des Sitzträgers 3 ist dabei angehoben.In Fig. 1 the basic position is shown, in which the seat support 3 is arranged substantially horizontally. Fig. 2 shows the synchronizing mechanism in a rearwardly pivoted position of the backrest support 4. The front portion of the seat support 3 is raised.

Der hintere Bereich 25 des Sitzträgers 3 ist unmittelbar an dem Basisträger angelenkt, und zwar mit Hilfe eines Lagerzapfens 6 an einem ersten Schwenklager 27 des Basisträgers 1. Der Sitzträger 3 kann somit um eine querliegende Schwenkachse 13 verschwenkt werden. Zur Ausbildung des Schenklagers 27 im Bereich des Basisträgers 1 erstrecken sich erste Montageschenkel 12 des Sitzträgers 3 von der Trägerplatte 11 des Sitzträgers 3 nach unten in Richtung Basisträger 1. Da das Schwenklager 27 am hinteren Ende 9 des Basisträgers 1 angeordnet ist, können auch Sitzträger 3 und/oder Sitze ungestört verschwenkt werden, die über die Hinterkante des Basisträgers 1 hinausragen, ohne daß es hierzu besonderer und aufwendiger konstruktiver Maßnahmen bedarf.The rear region 25 of the seat support 3 is articulated directly on the base support, with the aid of a bearing pin 6 on a first pivot bearing 27 of the base support 1. The seat support 3 can thus be pivoted about a transverse pivot axis 13. To form the Schenklager 27 in the region of the base support 1, first mounting leg 12 of the seat support 3 extend from the support plate 11 of the seat support 3 down toward the base support 1. Since the pivot bearing 27 is disposed at the rear end 9 of the base support 1, and seat support and / or seats are pivoted undisturbed, which protrude beyond the trailing edge of the base support 1, without the need for this special and expensive constructive measures.

Der Rückenlehnenträger 4 ist mit einer sich in Richtung Sitzvorderkante 8 erstreckenden Wange 5 mit Hilfe eines Lagerzapfens 6 an einem zweiten Schwenklager 28 des Basisträgers 1 unmittelbar angelenkt. Der Rückenlehnenträger 4 kann sich somit um eine querliegende Schwenkachse 15 aus der Grundposition in eine nach hinten verschwenkte Stellung bewegen. Das zweite Schwenklager 28 befindet sich in Sitzlängsrichtung 14 gesehen in etwa in der Mitte des Basisträgers 1, und zwar unmittelbar vor der Konusaufnahme 2. Der Rückenlehnenträger 4 ist darüber hinaus auch mit dem Sitzträger 3 unmittelbar gelenkig verbunden, genauer gesagt mit zweiten Montageschenkeln 19 des Sitzträgers 3, die sich von der Trägerplatte 11 des Sitzträgers 3 nach unten in Richtung Basisträger 1 erstrecken. Ein in diesen zweiten Montageschenkeln 19 angeordnetes Langloch 20 bildet gemeinsam mit einem an dem vorderen Ende der Wange 5 des Rückenlehnenträgers 4 befestigten Zapfen 10 ein Dreh-Schiebe-Gelenk 16 aus. Rückenlehnenträger 4 und Sitzträger 3 sind somit um eine querliegende Gelenkachse 22 schwenkbar und zugleich in Sitzlängsrichtung 14 verschiebbar miteinander verbunden. Neben einer Rotationsbewegung wird mit anderen Worten durch das Gelenk 16 zugleich auch eine Translationsbewegung möglich. Dies ist notwendig, um ein Sperren des Sitzträgers 3 zu verhindern, weil die Bewegungsbahn des Rückenlehnenträgers 4 um die zweite Schwenkachse 15 von der Bewegungsbahn des Sitzträgers 3 um die erste Schwenkachse 13 abweicht.The backrest support 4 is articulated directly to a second pivot bearing 28 of the base support 1 with a cheek 5 extending in the direction of the seat leading edge 8 with the aid of a bearing journal 6. The backrest support 4 can thus move about a transverse pivot axis 15 from the home position to a pivoted-back position. The second pivot bearing 28 is located in the seat longitudinal direction 14 seen approximately in the center of the base support 1, and immediately before the cone seat. 2 The backrest support 4 is also connected directly to the seat support 3 articulated, more precisely, with second mounting legs 19 of the seat support 3, which extend from the support plate 11 of the seat support 3 down towards the base support 1. An arranged in these second mounting legs 19 slot 20 forms together with a fixed to the front end of the cheek 5 of the backrest support 4 pin 10 a rotary-sliding joint 16. Backrest support 4 and seat support 3 are thus pivotable about a transverse hinge axis 22 and at the same time slidably connected to each other in the seat longitudinal direction 14. In addition to a rotational movement is in other words by the joint 16 at the same time also a translational movement possible. This is necessary in order to prevent locking of the seat support 3, because the movement path of the backrest support 4 about the second pivot axis 15 deviates from the movement path of the seat support 3 about the first pivot axis 13.

Die durch die Anlenkung des Rückenlehnenträgers 4 an dem Basisträger 1 definierte zweite Schwenkachse 15 ist in Sitzlängsrichtung 14 gesehen hinter der durch die Anlenkung des Rückenlehnenträgers 4 an dem Sitzträger 3 definierten Gelenkachse 22 angeordnet, so daß eine Schwenkbewegung der Rückenlehne in Schwenkrichtung 7 um die Schwenkachse 15 des zweiten Schwenklagers 28 nach hinten eine Drehung des Sitzträgers 3 um die Schwenkachse 13 des ersten Schwenklagers 27 und damit eine Anhebebewegung 23 ausschließlich des vorderen Bereiches 26 des Sitzträgers 3 induziert. Der rückwärtige Bereich 25 des Sitzträgers 3 wird nicht angehoben. Ein hinter der Schwenkachse 13 liegender Teil des Sitzes (nicht dargestellt) wird abgesenkt.The defined by the articulation of the backrest support 4 on the base support 1 second pivot axis 15 is seen in the seat longitudinal direction 14 behind the defined by the articulation of the backrest support 4 on the seat support 3 hinge axis 22 arranged so that a pivoting movement of the backrest in the pivoting direction 7 about the pivot axis 15th of the second pivot bearing 28 to the rear rotation of the seat support 3 about the pivot axis 13 of the first pivot bearing 27 and thus a lifting movement 23 exclusively of the front portion 26 of the seat support 3 induced. The rear portion 25 of the seat support 3 is not raised. A behind the pivot axis 13 lying part of the seat (not shown) is lowered.

Mit anderen Worten wird durch ein Verschwenken der Rückenlehne nach hinten unten der Sitzträger 3 in Schwenkrichtung 7 mitgenommen und aufgrund der durch die Wange 5 des Rückenlehnenträgers 4 gebildeten Hebelanordnung angehoben. Die Positionen der Anlenkpunkte 15, 22 des Rückenlehnenträgers 4 an dem Basisträger 1 einerseits und an dem Sitzträger 3 andererseits definieren erfindungsgemäß ein Hebelelement als integralen Bestandteil der vorderen Bereiches der Wange 5 des Rückenlehnenträgers 4.In other words, the seat support 3 is taken in the pivoting direction 7 and raised due to the lever assembly formed by the cheek 5 of the backrest support 4 by a pivoting of the backrest to the rear bottom. The positions of the articulation points 15, 22 of the backrest support 4 on the base support 1 on the one hand and on the seat support 3 on the other hand define a lever element according to the invention as an integral part of the front region of the cheek 5 of the backrest support 4.

Die Abstände zwischen der ersten Schwenkachse 13 und der zweiten Schwenkachse 15 sowie zwischen der zweiten 15 Schwenkachse und der Gelenkachse 22 definieren das Synchronverhältnis der Mechanik, d.h. das Übersetzungsverhältnis von Rückenlehnenträgerschwenkwinkel 29 zu Sitzträgerschwenkwinkel 30. Die gewählte Achsenanordnung bestimmt die Hebelgeometrie der Mechanik und legt fest, in welcher Art und Weise sich der Sitzträger 3 anhebt und synchron zu der verschwenkten Rückenlehne bewegt.The distances between the first pivot axis 13 and the second pivot axis 15 and between the second pivot axis 15 and the hinge axis 22 define the synchronous ratio of the mechanism, i. The selected ratio determines the lever geometry of the mechanism and determines the manner in which the seat support 3 lifts and moves synchronously to the pivoted backrest.

In der in den Figuren darrgestellten Ausführungsform liegen die erste Schwenkachse 13 und die Gelenkachse 22 in der nichtverschwenkten Grundstellung im wesentlichen auf einer Höhe, während die zweite Schwenkachse 15 nur unwesentlich höher angeordnet ist. Der Abstand 17 beträgt im Beispiel lediglich 2 mm. Dadurch ergibt sich u.a. eine sehr flachbauende Bauform.In the embodiment shown in the figures, the first pivot axis 13 and the hinge axis 22 are in the non-pivoted basic position essentially at a height, while the second pivot axis 15 is arranged only slightly higher. The distance 17 is in the example only 2 mm. This results u.a. a very flat design.

Der Abstand 31 von der ersten Schwenkachse 13 zu der zweiten Schwenkachse 15 beträgt in einer besonders vorteilhaften Ausführung 107 mm und der Abstand 32 von der ersten Schwenkachse 13 zu der Gelenkachse 22 beträgt 137 mm. Auch in einer maximal nach hinten verschwenkten Stellung der Synchronmechanik ändert sich die Reihenfolge der Anordnung der Achsen 13, 15, 22 nicht.The distance 31 from the first pivot axis 13 to the second pivot axis 15 is in a particularly advantageous embodiment 107 mm and the distance 32 from the first pivot axis 13 to the hinge axis 22 is 137 mm. Also in a maximum rearwardly pivoted position of the synchronous mechanism, the order of arrangement of the axes 13, 15, 22 does not change.

Durch eine Anordnung der ersten Schwenkachse 13 am hinteren Ende 9 des Basisträgers 1 kann auf konstruktiv besonders einfache Art und Weise ein vergleichsweise großer Abstand 31, 32 zu der zweiten Schwenkachse 15 bzw. zu der Gelenkachse 22 hergestellt werden, was ein besonders vorteilhaftes Synchronverhältnis zur Folge hat, bei dem ein sehr weites Verschwenken des Rückenlehnenträgers 4 nach hinten nur einen geringes Anheben der Vorderkante 8 des Sitzträgers 3 bewirkt. Als besonders vorteilhaft hat sich eine Ausführung erwiesen, bei der die Neigung 30 des Sitzträgers 3 zur horizontalen Ausgangslage etwa 5,5° beträgt, wenn der Rückenlehnenträger 4 eine Verschwenkung 29 von etwa 25° nach hinten unten aufweist. Im verschwenkten Zustand beträgt der vertikale Abstand 33 zwischen der zweiten Schwenkachse 15 und der Gelenkachse 22 in dem in Fig. 2 abgebildeten Beispiel 11 mm.By arranging the first pivot axis 13 at the rear end 9 of the base support 1, a comparatively large distance 31, 32 to the second pivot axis 15 or to the hinge axis 22 can be produced in a structurally particularly simple manner, which results in a particularly advantageous synchronous ratio has, in which a very wide pivoting of the backrest support 4 causes only a slight lifting of the front edge 8 of the seat support 3 to the rear. To be particularly advantageous, an embodiment has been found in which the inclination 30 of the seat support 3 to the horizontal starting position is about 5.5 °, when the backrest support 4 has a pivoting 29 of about 25 ° backwards down. In the pivoted state, the vertical distance 33 between the second pivot axis 15 and the hinge axis 22 in the in Fig. 2 illustrated example 11 mm.

Die Position der Achsen 13, 15, 22 bewirkt, daß der Gesamtdrehpunkt der Mechanik zu Beginn der Schwenkbewegung der Rückenlehne nahezu mit dem tatsächlichen Schwenkpunkt des Stuhlbenutzers übereinstimmt. Hierdurch ergibt sich ein besonders komfortabler Bewegungsablauf und das Auftreten negativer Effekte, wie beispielsweise des sogenannten Hemdauszieheffekts, kann vermieden werden.The position of the axes 13, 15, 22 causes the total pivot point of the mechanism at the beginning of the pivoting movement of the backrest to almost coincide with the actual pivot point of the chair user. This results in a particularly comfortable movement and the occurrence of negative effects, such as the so-called shirt pull-out effect, can be avoided.

Im vorliegenden Fall wird eine angenähert lineare Mechanikkennlinie erreicht, bei welcher der Schwenkwiderstand über den gesamten Bewegungsablauf angenähert konstant ist. Dabei wird der Sitzträger 3 nur im vorderen Bereich 26 angehoben, wodurch der intuitive menschliche Bewegungsablauf bei einem Verschwenken nach hinten unterstützt wird.In the present case, an approximately linear mechanical characteristic curve is achieved in which the swivel resistance is approximately constant over the entire movement sequence. In this case, the seat support 3 only in the front region 26th lifted, which supports the intuitive human motion sequence when pivoting backwards.

Durch den beschriebenen Schwenkmechanismus wird gewährleistet, daß der Rückenlehnenträger 4 mit der Rückenlehne um eine Schwenkachse, hier die zweite Schwenkachse 15, in Schwenkrichtung 7 verschwenkt werden kann. Zugleich induziert die Schwenkbewegung der Rückenlehne nach hinten eine Anhebebewegung 23 des vorderen Bereiches 26 des Sitzträgers 3. Bei einer Verschwenkung der Rückenlehne nach hinten unten erfolgt dabei keine Verschiebung des Sitzträgers 3 in Sitzlängsrichtung 14 nach vorn oder hinten. Der Sitzträger 3 vollführt ausschließlich eine Schwenkbewegung um die erste Schwenkachse 13, während der Basisträger 1 mit seinen beiden Schwenklagern 27, 28 positionsfest bleibt.By the described pivot mechanism ensures that the backrest support 4 with the backrest about a pivot axis, here the second pivot axis 15, can be pivoted in the pivoting direction 7. At the same time, the pivoting movement of the backrest to the rear induces a lifting movement 23 of the front portion 26 of the seat support 3. When pivoting the backrest to the rear down there is no displacement of the seat support 3 in the seat longitudinal direction 14 to the front or rear. The seat support 3 executes exclusively a pivoting movement about the first pivot axis 13, while the base support 1 with its two pivot bearings 27, 28 remains fixed in position.

Zur Unterstützung bzw. Beeinflussung des Schwenkwiderstandes und um zu verhindern, daß die Rücklehne unkontrolliert nach hinten kippt sowie für ein sicheres Zurückholen der Rückenlehne aus der verschwenkten Stellung in die Grundstellung, sobald der Benutzer der Rückenlehne nicht mehr belastet, dient eine Federanordnung mit einem oder mehreren Federelementen. Beispielsweise handelt es sich dabei um eine im Bereich des vorderen Basisträgers 18 angeordnete Feder 21, welche sich einerseits an dem Basisträger 1 und andererseits an der Wange 5 des Rückenlehneträgers 4 abstützt, und die bei einem Verschwenken des Rückenlehnenträgers 4 belastet wird. Das Federelement 21 braucht nur vergleichsweise schwach ausgebildet sein, so daß insgesamt auf die Bauteile der Mechanik nur geringe Federkräfte wirken, was in einer gegenüber herkömmlichen Mechaniken deutlich verringerten Beanspruchung der Bauteile resultiert.To assist or influence the pivoting resistance and to prevent the backrest tilts uncontrollably back and for a safe retrieval of the backrest from the pivoted position to the home position, as soon as the user no longer charged the backrest, a spring assembly with one or more spring elements. For example, this is a spring 21 arranged in the region of the front base support 18, which is supported on the one hand on the base support 1 and on the other hand on the cheek 5 of the backrest support 4, and which is loaded when the backrest support 4 is pivoted. The spring element 21 need only be made comparatively weak, so that in total act on the components of the mechanism only small spring forces, resulting in a comparison with conventional mechanics significantly reduced stress on the components.

Die in den Fig. 1 und 2 abgebildete Ausführungsform, bei der

  1. a) der Rückenlehnenträger 4 mit dem Basisträger 1 ausschließlich über eine einzige unmittelbare Verbindung in Gestalt eines Schwenklagers 28 verbunden ist,
  2. b) der Rückenlehnenträger 4 mit dem Sitzträger 3 ausschließlich über eine einzige unmittelbare Verbindung in Gestalt eines Gelenks 16 verbunden ist, und
  3. c) der Sitzträger 3 mit dem Basisträger 1 ausschließlich über eine einzige unmittelbare Verbindung, nämlich ein weiteres Schwenklager 13, sowie über eine mittelbare Verbindung verbunden ist, wobei die mittelbare Verbindung durch den Rückenlehnenträger 4 hergestellt wird, welcher einerseits mit dem Sitzträger 3 über das Gelenk 16 und andererseits mit dem Basisträger 1 über das Schwenklager 15 verbunden ist,
ist besonders vorteilhaft, weil damit die gewünschte Synchronbewegung mit besonders wenigen Bauteilen verwirklicht werden kann. Alternativ ist es aber auch möglich, anstelle des im Rückenlehnenträger 4 integrierten Gelenks 16 zur Anbindung des Rückenlehnenträgers 4 an den Sitzträger 3 ein oder mehrere Koppelelemente zu verwenden, die einerseits an dem Rückenlehnenträger 4 und andererseits an dem Sitzträger 3 angelenkt sind. Dadurch würde sich die Anzahl der Achsen auf vier erhöhen, wodurch sich weitere Möglichkeiten zur Gestaltung der Synchronbewegung ergeben. Zugleich bliebe jedoch der grundlegende Aufbau der Mechanik mit den o.g. Merkmalen, insbesondere das Hebelprinzip und die Art und Weise der Bewegung des Sitzträgers 3 betreffend, erhalten.The in the Fig. 1 and 2 illustrated embodiment, in the
  1. a) the backrest support 4 is connected to the base support 1 exclusively via a single direct connection in the form of a pivot bearing 28,
  2. b) the backrest support 4 is connected to the seat support 3 exclusively via a single direct connection in the form of a joint 16, and
  3. c) the seat support 3 is connected to the base support 1 exclusively via a single direct connection, namely a further pivot bearing 13, and via an indirect connection, wherein the indirect connection is made by the backrest support 4, which on the one hand with the seat support 3 via the joint 16 and on the other hand connected to the base support 1 via the pivot bearing 15,
is particularly advantageous because thus the desired synchronous movement can be realized with very few components. Alternatively, it is also possible, instead of the integrated in the backrest support 4 joint 16 for connecting the backrest support 4 to the seat support 3 to use one or more coupling elements, which are hinged on the one hand to the backrest support 4 and on the other hand to the seat support 3. As a result, the number of axes would increase to four, resulting in further possibilities for designing the synchronous movement. At the same time, however, the basic construction of the mechanism with the above-mentioned features, in particular the lever principle and the manner of movement of the seat support 3, would be preserved.

Alle in der Beschreibung, den nachfolgenden Ansprüchen und den Zeichnungen dargestellten Merkmale können sowohl einzeln, als auch in beliebiger Kombination miteinander erfindungswesentlich sein.All in the description, the following claims and the drawings illustrated features may be essential to the invention both individually, as well as in any combination.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Basisträgerbase support
22
Konusaufnahmecone holder
33
Sitzträgerseat support
44
RückenlehnenträgerBackrest support
55
Wangecheek
66
Lagerzapfenpivot
77
Schwenkrichtungpan direction
88th
SitzvorderkanteFront seat edge
99
hinteres Basisträgerenderear base station end
1010
Zapfenspigot
1111
Trägerplattesupport plate
1212
erste Montageschenkelfirst mounting leg
1313
erste Schwenkachsefirst pivot axis
1414
SitzlängsrichtungSeat longitudinal direction
1515
zweite Schwenkachsesecond pivot axis
1616
Dreh-Schiebe-GelenkRotary-sliding joint
1717
Abstanddistance
1818
vorderes Basisträgerendefront end base
1919
zweite Montageschenkelsecond mounting leg
2020
LanglochLong hole
2121
Federfeather
2222
Gelenkachsejoint axis
2323
Anhebebewegungraising movement
2424
(frei)(free)
2525
hinterer Bereich des Sitzträgersrear area of the seat support
2626
vorderer Bereich des Sitzträgersfront area of the seat support
2727
erstes Schwenklagerfirst pivot bearing
2828
zweite Schwenklagersecond pivot bearing
2929
Schwenkwinkel des RückenlehnenträgersSwivel angle of the backrest support
3030
Schwenkwinkel des SitzträgersSwivel angle of the seat support
3131
Abstanddistance
3232
Abstanddistance
3333
Abstanddistance

Claims (3)

  1. A synchronizing mechanism for a correlated seat/backrest movement of an office chair, having a base support (1) which is placeable on a chair column, a seat support (3) and a backrest support (4),
    - wherein the seat support (3) is articulated directly on a first pivot bearing (27) of the base support (1), wherein the first pivot bearing (27), as seen in the longitudinal direction (14) of the seat, is arranged at the rear end (9) of the base support (1),
    - wherein the backrest support (4) is articulated directly on a second pivot bearing (28) of the base support (1),
    - wherein the backrest support (4) is connected to the seat support (3) via an articulation (16), and
    - wherein the articulation axis (22) of the articulation (16), as seen in the longitudinal direction (14) of the seat, is arranged in front of the pivot axis (15) of the second pivot bearing (28), such that a pivoting movement (7) of the backrest to the rear about the pivot axis (15) of the second pivot bearing (28) induces a rotation of the seat support (3) about the pivot axis (13) of the first pivot bearing (27) and thus a lifting movement (23) of the front region (26) of the seat support (3).
  2. The synchronizing mechanism as claimed in claim 1, wherein the backrest support (4) is connected directly to the seat support (3) via the articulation (16).
  3. The synchronizing mechanism as claimed in claim 1 or 2, wherein the articulation (16) is a rotary-sliding-articulation.
EP12703437.9A 2011-02-01 2012-01-20 Synchron mechanics Active EP2670279B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011010099A DE102011010099A1 (en) 2011-02-01 2011-02-01 synchronous mechanism
PCT/EP2012/000247 WO2012104024A1 (en) 2011-02-01 2012-01-20 Synchronizing mechanism

Publications (2)

Publication Number Publication Date
EP2670279A1 EP2670279A1 (en) 2013-12-11
EP2670279B1 true EP2670279B1 (en) 2016-05-18

Family

ID=45581809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12703437.9A Active EP2670279B1 (en) 2011-02-01 2012-01-20 Synchron mechanics

Country Status (5)

Country Link
US (1) US20130320732A1 (en)
EP (1) EP2670279B1 (en)
CN (1) CN103338681B (en)
DE (1) DE102011010099A1 (en)
WO (1) WO2012104024A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11350750B2 (en) 2018-04-17 2022-06-07 L&P Property Management Company Tilt mechanism for a chair and chair

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101398686B1 (en) * 2013-10-10 2014-05-27 주식회사 시디즈 Tilting type chair
NL2022680B1 (en) 2019-03-06 2020-09-17 Marel Poultry B V A poultry transfer mechanism
DE102019113582B4 (en) * 2019-05-21 2022-06-15 Bock 1 Gmbh & Co. Kg synchronous mechanism

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3537203A1 (en) * 1984-10-24 1986-04-24 Klöber GmbH & Co, 7770 Überlingen Work chair with inclination mechanism for seat and back
EP0179185B1 (en) * 1984-10-24 1990-06-13 Bürositzmöbelfabrik Friedrich-W. Dauphin GmbH & Co. Chair, in particular an office chair
DK167334B1 (en) * 1990-01-10 1993-10-18 Space International Aps CONVERTIBLE CHAIR
JPH09504218A (en) * 1993-11-01 1997-04-28 ラボファ、アクチセルスカベット Work chair with seat and back sync adjustment
DE19639741C2 (en) * 1996-09-06 1998-07-09 Thomas Jungjohann Seating furniture element, in particular upholstered furniture element, with a coupled backrest and seat adjustment
DE19702328A1 (en) * 1997-01-23 1998-07-30 Comforto Gmbh Chair with synchronous mechanism
DE20116683U1 (en) * 2001-10-13 2002-01-24 Voelkle Rolf Seating, in particular office swivel chair
DE102005020237B3 (en) * 2005-04-28 2006-08-17 Bock 1 Gmbh & Co. Kg Synchronous mechanism e.g. for correlated seat backrest movement of office chair, is connected to chair column base carrier, seat support and backrest carrier with tiltable backrest carrier arranged around transverse axis
ES2288115B1 (en) * 2006-05-03 2008-09-16 Figueras International Seating S.A. SYSTEM OF DISPLACEMENT OF ARMCHAIR SETS.
DE202007006762U1 (en) * 2006-10-13 2008-02-14 Bock 1 Gmbh & Co. Kg Mechanics for an office chair
DE102007040175B3 (en) * 2007-05-07 2008-06-05 Bock 1 Gmbh & Co. Kg Synchronism mechanism for office chair, has spring arrangement with helical spring locked in area of winding channel against spring deformation, where channel acts on latch of adjusting arrangement, and has variable engagement depths
CN201123561Y (en) * 2007-09-06 2008-10-01 陈登慧 Chair structure
KR101014456B1 (en) * 2008-07-31 2011-02-14 기아자동차주식회사 Tilting Apparatus for Seat Cushion in Vehicle
WO2010028412A1 (en) * 2008-09-15 2010-03-18 Bene Ag Device for adjusting the pivoting resistance of a backrest
CN201370309Y (en) * 2009-01-19 2009-12-30 翁永联 Swivel chair base convenient for pitchup adjustment
DE102009009287A1 (en) * 2009-02-17 2010-09-09 Uhlenbrock, Christel Seating furniture, in particular office swivel chair

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11350750B2 (en) 2018-04-17 2022-06-07 L&P Property Management Company Tilt mechanism for a chair and chair

Also Published As

Publication number Publication date
US20130320732A1 (en) 2013-12-05
WO2012104024A1 (en) 2012-08-09
CN103338681B (en) 2016-02-24
DE102011010099A1 (en) 2012-08-02
CN103338681A (en) 2013-10-02
EP2670279A1 (en) 2013-12-11

Similar Documents

Publication Publication Date Title
DE102005020237B3 (en) Synchronous mechanism e.g. for correlated seat backrest movement of office chair, is connected to chair column base carrier, seat support and backrest carrier with tiltable backrest carrier arranged around transverse axis
WO2001091614A1 (en) Chair
DE102005029906B3 (en) synchronous mechanism
DE202009018847U1 (en) Device for synchronizing the tilting of a chair backrest and a seat
WO2011141107A1 (en) Adjusting mechanism for adjusting a restoring force that acts on a backrest of a chair, and office chair with such an adjusting mechanism
DE102015101546A1 (en) synchronous mechanism
EP2888975B1 (en) Work chair with a synchronous mechanism and flexing spring
EP2670279B1 (en) Synchron mechanics
WO2016124317A1 (en) Synchronized mechanism
DE102007021782B3 (en) Synchronous mechanism for office chairs
EP1683441A1 (en) Synchro mechanism
EP2994017B1 (en) Synchronizing mechanism
DE102010046994B4 (en) synchronous mechanism
EP2477523B1 (en) Tilting mechanism for an office chair
DE202011002235U1 (en) synchronous mechanism
EP3100642B1 (en) Mechanism for a chair comprising a synchronous mechanism; method for weight adjustment for an improved dynamic feel of sitting for the user by means of a mechanism for a chair comprising a synchronous mechanism
WO2012048863A1 (en) Synchronisation mechanism
DE102020129709B4 (en) swivel mechanism
EP3253254B1 (en) Synchronized mechanism
EP0535262B1 (en) Adjustable chair which is adaptable to a person's stature, particularly rotatable chair
DE202011004701U1 (en) synchronous mechanism
WO2002032261A9 (en) Office chair
EP4115768A1 (en) Mechanism for a chair
DE102020129708A1 (en) swivel mechanism

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20130709

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160105

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

Ref country code: AT

Ref legal event code: REF

Ref document number: 799630

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160615

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502012007129

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20160518

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160818

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160919

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160819

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502012007129

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20170221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170131

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170929

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170131

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170131

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170131

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170120

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20170131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170120

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 799630

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170120

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170120

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20120120

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160918

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20221215

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20221216

Year of fee payment: 12

Ref country code: DE

Payment date: 20230104

Year of fee payment: 12