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EP1258211B1 - Mécanisme synchronisé pour un mouvement correlé entre une siège et un dossier des chaises de bureau - Google Patents

Mécanisme synchronisé pour un mouvement correlé entre une siège et un dossier des chaises de bureau Download PDF

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Publication number
EP1258211B1
EP1258211B1 EP02009189A EP02009189A EP1258211B1 EP 1258211 B1 EP1258211 B1 EP 1258211B1 EP 02009189 A EP02009189 A EP 02009189A EP 02009189 A EP02009189 A EP 02009189A EP 1258211 B1 EP1258211 B1 EP 1258211B1
Authority
EP
European Patent Office
Prior art keywords
spring
bearing block
backrest
seat
carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02009189A
Other languages
German (de)
English (en)
Other versions
EP1258211A2 (fr
EP1258211A3 (fr
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 EP1258211A2 publication Critical patent/EP1258211A2/fr
Publication of EP1258211A3 publication Critical patent/EP1258211A3/fr
Application granted granted Critical
Publication of EP1258211B1 publication Critical patent/EP1258211B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255Reclining 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
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03266Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03294Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers

Definitions

  • the invention relates to a synchronous mechanism for the simultaneous Weg lake- and backrest pivoting movement in office chairs with the features specified in the preamble of claim 1.
  • the synchronous mechanism is acted upon by a spring arrangement in the direction of the basic position, ie against the pivoting movement to the rear.
  • spring arrangements can have a wide variety of types of springs, such as, for example, torsion springs, gas springs or helical compression springs.
  • the latter are usually clamped between a stationary abutment on the seat support and an abutment coupled to the backrest support, whereby the latter must compress the compression spring when pivoting.
  • the applied by the spring assembly against the operation of the synchronous mechanism back pressure should be adjustable for ergonomic reasons, since a lighter person requires far less back pressure than a heavyweight.
  • such spring arrangements have suitable Spring force adjustments of different types.
  • one of the legs is adjustably mounted in leg springs, so that the spring force can be biased by a shift of this leg.
  • it is customary to store at least one of the abutment slidably in the direction of action of the compression spring, so that by moving the abutment z. B. in the sense of greater compression of the spring whose bias and thus spring action is to increase.
  • the disadvantage here is that when adjusting the bias against the full spring force must be worked.
  • the present invention seeks to further develop a synchronous mechanism with spring action and spring force adjustment arrangement so that the adjustment practically “force-free", so without having to work directly against the bias of the spring can take place.
  • abutment link coupled to the backrest support abutment of the compression spring is formed by a abutment link, which is pivotally connected via a pivot axis with a bearing block.
  • the latter is forcibly coupled to the backrest support based on the pivoting movement.
  • the pivoting movement of the bearing block is thus transferred to the abutment link, which thereby compresses the compression spring.
  • the articulation axis along a sliding guide in the bearing block is positioned at different distances from the pivot axis substantially transversely to the direction of compression spring action, which is effected by an externally actuable control mechanism, ie by hand or by a corresponding positioning motor.
  • the mentioned control mechanism for the positioning of the pivot axis is formed by a rack drive, so that the preset spring force characteristic is reliably maintained by the self-naming of this drive.
  • the seat support is formed as a continuous thin-walled aluminum die-cast part with a vertical cross-section H-shaped base profile, the H-vertical leg are each formed by a substantially continuous side wall and its H-horizontal leg of functionally adapted Querverrippept. Here are from the peripheral edges of the two side walls in opposite directions peripheral edge cheeks.
  • a further advantage is that the space enclosed by the peripheral edge cheeks on the outside of the two side walls space can serve as a mounting space, for example, for the spring assembly. Due to the boundary with the edge cheeks can be easily snapped to cover the entire kinematics from the outside a simple cover shell, the only suitable Dürchbrüche for axes and actuators such. B. the rotary handle to actuation of the control mechanism for spring force adjustment, must have.
  • FIG. 1 an office chair designated as a whole by 1 to a chair column 2, on which a seat support 3 is placed with a cone seat 4.
  • a seat plate 5 On the seat support a seat plate 5 is articulated at the front end, wherein in Fig. 1, only a simple pivot joint 6 is shown.
  • a backrest support 7 is pivotally hinged in a pivot axis 8 on the seat support 3.
  • the backrest support 7 holds the actual backrest 9 and is also connected to the seat plate via a handlebar 10 articulated. It should be noted that instead of the construction shown at the front end of the seat plate, a handlebar and rear a simple joint coupling between seat plate and backrest support can be made. Thus, the kinematic conditions with respect to FIG. 1 reverse.
  • a designated as a whole with 11 spring arrangement is also indicated, the exact structure will be explained in more detail with reference to the other figures.
  • This spring arrangement 11 counteracts a pivoting of the synchronizing mechanism formed by the seat carrier 3, seat plate 5 and backrest support 7 backwards downwards (arrow 12) and acts on the synchronizing mechanism in the direction of the basic position shown in FIG.
  • the seat support 3 with respect to a plane parallel to the sheet 1 lying mid-plane is symmetrical, that is, that in Fig. 11 visible spring arrangement on the outside of the seat support 3 symmetrically on the opposite side of the seat support 3 is again present.
  • all components of the spring arrangement described below as individual parts are present in pairs on both sides of the seat support.
  • FIGS. 2 to 6 wherein in the perspective views according to FIGS. 3 to 6 the sake of clarity, the actual seat support 3 is omitted.
  • Core of the spring assembly 11 is a in Figs. 2 to 6 indicated as a cylinder, rigid helical compression spring 13 which is articulated in a stationary abutment 14 on the pivot joint 6 of the seat plate 5 forming axis 15.
  • the abutment 14 is indeed pivotable, but effective with respect to the synchronous mechanism as a fixed support point.
  • the opposite end of the helical compression spring 13 is seated in a variably adjustable abutment 16 which is coupled via a designated as a whole by 17 spring force adjustment arrangement in a manner to be explained in more detail with the backrest support 7.
  • the integrated into the spring assembly 11 spring force adjustment assembly 17 has now as a central part in a side view approximately quarter-circular bearing block 18 which is rotatably mounted on the pivot axis 8 of the backrest support 7. This is indicated by the hexagonal cross section of the pivot axis 8 in Fig. 3 to 6.
  • the backrest support 7 is also rotatably connected to the pivot axis 8, so that a positive coupling based on the pivotal movement between the backrest support 7 and bearing block 18 is.
  • the bearing block 18 is designed as a kind of support for a plurality of functional parts by extending from its area surrounding the pivot axis 8 two parallel, said quarter-circle shape determining side cheeks 20, 21 between which quasi a mounting space 22 is formed.
  • abutment link 19 which is pivotally coupled via an axis 23 with the variable abutment 16.
  • the abutment 16 remote from the end of the abutment link 19 is slidably guided over a further (articulation) axis 24 in a slide-like sliding guide 25.
  • This slide guide 25 is formed as a slot guide, wherein the slightly curved, slot-shaped link extends substantially vertically and thus transversely to the compression spring action direction K.
  • the slide guide 25 is basically the compression spring 13 applied end of the abutment arm 19 so slidable that the defined by the axis 24 lever engagement point of the spring force on the bearing block 18 in its distance from the pivot axis 8 is variable.
  • control mechanism which has a rack drive 27 for the axis 24 and thus the position of the abutment arm 19.
  • This rack drive 27 consists of a pinion 28, which sits on a rotatably mounted in the bearing block 18 actuating shaft 29. This is rotatable about a not shown in the drawings rotary handle by hand.
  • the pinion 28 meshes with a rack 30, which is formed transversely to the compression spring-effective direction in a substantially in the bearing block Linear guide 30 is slidably guided.
  • the underlying in Fig. 2 end of the rack 30 is formed as a laterally bent to the axis 24 towards Langlochinate 32, which receives the pivot axis 24 of the abutment arm 19.
  • an additional support lever 33 is pivotally mounted in a parallel to the previously mentioned axes extending further axis 34. Its opposite end carries the aforementioned axis 23, which defines the joint between the variable abutment 16 and the abutment link 19.
  • the support lever 33 In the non-deflected basic position of the synchronizing mechanism shown in FIG. 2, the support lever 33 is positioned in such a way that it frictionally rests against the bearing block 18 via a contact region 36 which is arcuate in side view.
  • the spring force of the helical compression spring 1 is loaded directly on the bearing block 18 and relieves the control mechanism 26 in its interior.
  • the control mechanism 26 is shown in a position in which the pivot axis 24 maximum distance A to the pivot axis 8 has. Upon pivoting of the backrest support 7 to the rear, this pivotal movement is transmitted to the bearing block 18 and there leads to a pivoting about the angle W.
  • the pivot axis 24th passes through the arc path X1, which essentially corresponds to the compression travel of the helical compression spring 13.
  • a central gas spring 37 whose piston rod 38 is connected to the axis 15, can be used parallel to the helical compression springs 13.
  • the end facing away from the gas spring 37 is struck on the bearing block 18 via the recognizable in Fig. 5 approach 39, so that the gas spring 37 acts in the same sense as the helical compression spring 13.
  • it causes a damping of the entire kinematics and can be used for blocking the pivoting movement of the synchronous mechanism.
  • only the arranged at the front end of the piston rod 38 release button 40 of the gas spring must be operated in a known manner, so that the synchronous mechanism is rigidly connected.
  • the seat support 3 is formed as a continuous thin-walled aluminum die-cast part having a vertical cross-section approximately H-shaped base profile.
  • the H vertical legs are formed by the respective continuous side walls 50, 51, which are connected between them by integrally molded functional Querverrippept 52.
  • Above is a horizontal transverse rib 52.2 recognizable.
  • peripheral edges 53 of the side walls 50, 51 are each in opposite directions edge cheeks 54, 55 from, on the one hand serve a significant stiffening of the entire arrangement.
  • edge cheeks 54, 55 serve a significant stiffening of the entire arrangement.
  • they define a mounting space in which, for example, a part of the spring assembly 10 can be accommodated. This is indicated in Fig. 7 in the left part by the plurality of superimposed lines.
  • the seat support 3 can be covered on both sides with a simple cover 56, 57, which indicated in Fig. 1 by dashed lines, slot-shaped openings 58, 59 for various actuators, such as the actuating shaft 29 has.

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)

Claims (10)

  1. Mécanisme de synchronisation servant au basculement simultané de l'assise et du dossier de sièges de bureau et comprenant :
    - un support d'assise (3),
    - une plaque d'assise (5) qui y est articulée,
    - un support de dossier (7), qui y est également articulé de manière basculante, avec lequel la plaque d'assise (5) est couplée de manière articulée, et
    - un dispositif formant ressort .(11) servant à solliciter le mécanisme de synchronisation à l'encontre de son mouvement de bascule en arrière, lequel dispositif formant ressort (11) comporte un ressort de pression (13) monté entre une butée fixe (14) située sur le support d'assise (3) et une butée couplée au support de dossier (7),
    caractérisé par
    - un dispositif de réglage de force de ressort (17) intégré dans le dispositif formant ressort (11) et comportant :
    - un bloc-support basculant (18) couplé de manière forcée au support de dossier (7) eu égard au mouvement de bascule de ce dernier,
    - une bielle de butée (19) attachée de manière articulée dans le bloc-support (18) par l'intermédiaire d'un axe d'articulation (24) et sur laquelle le ressort de pression (13) prend appui côté support de dossier, et
    - un mécanisme de commande (26), notamment actionnable à la main, situé dans le bloc-support (18) et avec lequel l'axe d'articulation (24) peut être placé, le long d'un guide à coulisse (25) situé dans le bloc-support (18) et sensiblement transversalement à la direction d'action du ressort de pression (K), à différentes distances de l'axe de pivotement (8).
  2. Mécanisme de synchronisation selon la revendication 1, caractérisé en ce que la bielle de butée (19) est suspendue à un levier d'appui (33) articulé de manière basculante au support d'assise (3), lequel levier d'appui est placé devant le bloc-support (18) de telle sorte que, lorsque le support de dossier (7) n'est pas basculé, le levier d'appui (33) prenne appui contre le bloc-support (18) en chargeant la force de ressort directement sur le bloc-support (18).
  3. Mécanisme de synchronisation selon la revendication 1 ou 2, caractérisé en ce que le mécanisme de commande (26) comporte un entraînement à crémaillère (27) avec un pignon (28) que l'on peut faire tourner à la main dans le bloc-support (18) et une crémaillère (30) engrenée avec ledit pignon, avec laquelle l'axe d'articulation (24) est couplé et qui est guidée de manière coulissante dans un guide linéaire (31) situé dans le bloc-support (18).
  4. Mécanisme de synchronisation selon la revendication 3, caractérisé en ce que le couplage entre l'axe d'articulation (24) et la crémaillère (30) est formé, à une extrémité de la crémaillère (30), par un anneau en trou oblong (32) dans lequel se loge l'axe d'articulation (24).
  5. Mécanisme de synchronisation selon l'une des revendications 1 à 4, caractérisé en ce que l'axe d'articulation (24) est guidé, de plus, dans un guide en trou oblong (25) situé dans le bloc-support (18).
  6. Mécanisme de synchronisation selon la revendication 5, caractérisé en ce que le flanc arrière (41), éloigné du ressort de pression (13), du guide en trou oblong (25) comporte des creux d'encliquetage plats (42) alignés les uns à côté des autres et destinés à l'axe d'articulation (24).
  7. Mécanisme de synchronisation selon l'une des revendications 1 à 6, caractérisé en ce que le bloc-support (18) est une pièce, séparée du support de dossier (7), qui est placée, de manière solidaire en rotation, sur l'axe de pivotement (8) du support de dossier (7), lequel axe de pivotement est relié, également de manière solidaire en rotation, au support de dossier (7).
  8. Mécanisme de synchronisation selon l'une des revendications 1 à 7, caractérisé en ce que toutes les pièces constructives du dispositif formant ressort (11) avec son dispositif de réglage de force de ressort (17) sont disposées par paire des deux côtés du support d'assise (3).
  9. Mécanisme de synchronisation selon l'une des revendications 1 à 8, caractérisé en ce qu'un ressort pneumatique (37) est installé de manière active - en tant qu'élément supplémentaire d'amortissement, de suspension et de blocage - entre le support d'assise (3) et le support de dossier (7), sensiblement parallèlement au(x) ressort(s) de pression (13).
  10. Mécanisme de synchronisation selon l'une des revendications 1 à 9, caractérisé en ce que le support d'assise (3) est réalisé sous forme de pièce de coulée sous pression en aluminium, à parois continûment minces, ayant, en coupe verticale, un profil de base en forme de H dont les branches verticales de H sont chacune formées par une paroi latérale (50) sensiblement continue et dont les branches horizontales de H sont formées par des nervures transversales (52) fonctionnellement adaptées, des rebords périphériques (54) faisant saillie, dans des sens mutuellement opposés, à partir des bords circonférentiels (53) des deux parois latérales (50).
EP02009189A 2001-05-18 2002-04-25 Mécanisme synchronisé pour un mouvement correlé entre une siège et un dossier des chaises de bureau Expired - Lifetime EP1258211B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10126000A DE10126000A1 (de) 2001-05-18 2001-05-18 Synchronmechanik für die simultane Sitzflächen- und Rückenlehnen-Schwenkbewegung bei Bürostühlen
DE10126000 2001-05-18

Publications (3)

Publication Number Publication Date
EP1258211A2 EP1258211A2 (fr) 2002-11-20
EP1258211A3 EP1258211A3 (fr) 2004-01-28
EP1258211B1 true EP1258211B1 (fr) 2006-03-29

Family

ID=7686435

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02009189A Expired - Lifetime EP1258211B1 (fr) 2001-05-18 2002-04-25 Mécanisme synchronisé pour un mouvement correlé entre une siège et un dossier des chaises de bureau

Country Status (3)

Country Link
EP (1) EP1258211B1 (fr)
AT (1) ATE321473T1 (fr)
DE (2) DE10126000A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10302208A1 (de) * 2003-01-22 2004-07-29 Klöber GmbH Stuhl mit schnell verstellbarem Kraftspeicher
DE20306014U1 (de) * 2003-04-14 2003-06-26 Vitra Patente Ag, Muttenz Mechanik für einen Stuhl mit einer Gasfeder zur synchronen Steuerung der Neigung von Sitz und Rückenlehne
ITVE20050027A1 (it) * 2005-04-28 2006-10-29 Imarc Spa Dispositivo di regolazione della forza di oscillazione in meccanismi per sedie da ufficio.
EP1825780A1 (fr) * 2006-02-24 2007-08-29 Ideassociates (IOM) Limited Un dispositif de charnière pour assembler deux objets de maniere articulée et à ressort
DE102006047889B4 (de) 2006-10-10 2008-10-23 Interstuhl Büromöbel GmbH & Co. KG Sitzmöbel, insbesondere Bürostuhl
DE602007005682D1 (de) * 2006-10-23 2010-05-12 Ideassociates Iom Ltd Synchronisiervorrichtung für bürostuhl
DE102007059985B3 (de) * 2007-12-11 2009-04-09 Sedus Stoll Ag Vorrichtung zur Federkraftverstellung bei einem Bürostuhl
WO2010103554A1 (fr) * 2009-03-10 2010-09-16 Effe Tre S.R.L. Dispositif de support d'une chaise avec dossier inclinable
CN102843930B (zh) 2010-04-15 2016-02-10 喜迪世公司 用于调节作用在椅子靠背上的恢复力的调节机构、以及具有这种调节机构的办公椅
EP2739184B1 (fr) 2011-08-03 2015-07-08 Haworth, Inc. Mécanisme de réglage permettant de déterminer une force de rappel qui agit sur un dossier d'une chaise, et chaise de bureau qui comporte un mécanisme de réglage de ce type
DE102014226645B4 (de) 2014-12-19 2023-10-05 Hangzhou Zhongtai Industrial Group Co., Ltd. Verstellmechanik zur Einstellung einer auf eine Rückenlehne eines Stuhls einwirkenden Rückstellkraft und Bürostuhl mit einer solchen Verstellmechanik
CN106235726B (zh) * 2016-07-30 2019-03-01 陈烁 公用座椅
ES2596510B1 (es) * 2016-08-02 2017-04-18 Actiu Berbegal Y Formas S.A. Dispositivo para la basculación del respaldo de sillas de oficina
DE102018115924A1 (de) * 2018-07-02 2020-01-02 König + Neurath AG Stuhl

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8628142U1 (de) * 1986-10-22 1986-11-27 Wilhelm Link GmbH & Co KG Stahlrohrmöbel, 7475 Meßstetten Stuhl, insbesondere Bürostuhl
IL103477A0 (en) * 1992-10-20 1993-03-15 Paltechnica Nitzanim Office and like chairs
DE4324542A1 (de) * 1993-07-22 1995-01-26 Trendoffice Bueromoebel Stuhl, insbesondere Bürostuhl
DE19931099C2 (de) * 1999-07-06 2001-08-09 Roeder Peter Stuhl mit selbständiger Anpassung der Vorbelastungskraft der Rückenlehne

Also Published As

Publication number Publication date
DE10126000A1 (de) 2002-11-21
EP1258211A2 (fr) 2002-11-20
EP1258211A3 (fr) 2004-01-28
ATE321473T1 (de) 2006-04-15
DE50206186D1 (de) 2006-05-18

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