EP0815778A1 - Perfectionnement aux systèmes de flexion différentielle des dossiers de sièges de bureau - Google Patents
Perfectionnement aux systèmes de flexion différentielle des dossiers de sièges de bureau Download PDFInfo
- Publication number
- EP0815778A1 EP0815778A1 EP96440052A EP96440052A EP0815778A1 EP 0815778 A1 EP0815778 A1 EP 0815778A1 EP 96440052 A EP96440052 A EP 96440052A EP 96440052 A EP96440052 A EP 96440052A EP 0815778 A1 EP0815778 A1 EP 0815778A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bar
- backrest
- torsion
- seat
- user
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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
- A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03266—Reclining 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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs
- A47C1/03279—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs of torsion type
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
caractérisé en ce que les moyens mécaniques assurant la résistance élastique de chacun des deux éléments de support consistent chacun en un organe susceptible de subir une déformation élastique sous l'action d'une contrainte de torsion, les deux organes étant associés l'un à l'autre de manière que le second intervienne séquentiellement par rapport au premier.
Description
- La figure 1 est un schéma cinématique des éléments essentiels du mécanisme selon l'invention, vu de côté ;
- La figure 2 représente schématiquement le principe du rôle fonctionnel de la première barre de torsion, vue de l'arrière ;
- La figure 3 représente schématiquement le principe du rôle fonctionnel de la seconde barre de torsion, vue de l'arrière ; et
- La figure 3a est une coupe verticale suivant X-X de la figure 3.
Claims (12)
- Système de dossier réglable pour siège de bureau, comportant un réglage indépendant de la portion thoracique et de la portion lombaire dudit dossier, du type dans lequel un premier élément de support, agissant élastiquement sur ladite portion thoracique est monté pivotant sur le boítier de commande fixe dudit système de réglage, tandis qu'un second élément de support agit élastiquement sur ladite portion lombaire, lesdits premier et second éléments de support fonctionnant indépendamment l'un de l'autre en rotation vers l'arrière par rapport au siège,
caractérisé en ce que les moyens mécaniques assurant la résistance élastique de chacun des deux éléments de support consistent chacun en un organe susceptible de subir une déformation élastique sous l'action d'une contrainte de torsion, les deux organes étant associés l'un à l'autre de manière que le second intervienne séquentiellement par rapport au premier. - Système selon la revendication 1, caractérisé en ce qu'au moins l'un desdits organes est une barre de torsion, l'autre étant un ressort de torsion.
- Système selon les revendications 1 et 2, caractérisé en ce que les deux organes sont des barres de torsion, la seconde de ces barres étant montée par rapport à la première de manière à intervenir après avoir subi l'action de la déformation de la première.
- Système selon les revendications 1 et 3, caractérisé en ce qu'une première barre de torsion détermine l'inclinaison de la portion thoracique du dossier par basculement, autour dudit boítier de commande fixe, d'un premier équipage portant une barre au support sensiblement verticale du point haut du dossier, tandis qu'une seconde barre de torsion détermine l'inclinaison et la cambrure de la portion lombaire du dossier, par basculement, autour dudit premier équipage, d'un second équipage portant des colonnes sensiblement verticales et disposées de part et d'autre du dossier, et supportant une barre d'appui sensiblement horizontale pour la zone cambrée s'adaptant à la zone lombaire de l'utilisateur.
- Système selon les revendications 1, 3 et 4, caractérisé en ce que le premier équipage se compose essentiellement d'une barre de torsion horizontale à section constante, travaillant sur toute sa longueur, fixée à une extrémité à un fourreau concentrique fixé rotatif au boítier fixe du siège, et servant d'organe de rappel à la rotation dudit fourreau, lequel porte un carter basculant auquel est fixée une barre angulaire dont le sommet est articulé à un point du dossier soumis à la pression de l'arrière de la cage thoracique de l'utilisateur, et comportant de préférence à son autre extrémité des moyens de précontrainte permettant de régler à volonté la dureté de la réaction du haut du dossier à ladite pression
- Système selon les revendications 1, 3 et 4, caractérisé en ce que le second équipage se compose essentiellement d'une barre de torsion horizontale servant d'organe de rappel à une paire de fourreaux fixés rotatifs audit carter basculant et portant à chaque extrémité une colonne verticale, de préférence à hauteur réglable, ces colonnes supportant une barre d'appui horizontale déterminant, derrière le dossier, le degré de courbure optimal de la zone lombaire du corps de l'utilisateur, c'est à dire la base de la colonne vertébrale et le bassin.
- Système selon la revendication 6, caractérisé en ce que ladite barre est composite, formée de l'association de quatre barres de sections carrées égales entre elles et chacune égale au quart de la section de la barre composite, dans le but d'autoriser le développement d'un degré de torsion plus élevé.
- Système selon les revendications 1 et 5, caractérisé en ce que sur l'extrémité 1b de la barre 1 opposée à l'extrémité 1a qui est solidaire du fourreau 11, peut être monté un organe 8 actionné par un bouton 9 situé sous l'assise, et qui tend à faire subir à la barre 1 un commencement de torsion, avant même que l'utilisateur n'exerce son poids sur le dossier.
- Système selon les revendications 1 et 6, caractérisé en ce qu'une précontrainte est exercée au centre 10 de la barre, laquelle travaille alors deux fois plus sur chaque côté pour atteindre la même inclinaison des colonnes 6.
- Système selon l'une quelconque des revendications précédentes, caractérisé en ce que la surface supérieure de l'assise est convexe.
- Système selon l'une des revendications précédentes, caractérisé en ce que le dossier est réalisé en un matériau composite suffisamment souple pour permettre une flexion indépendante de sa portion supérieure et de sa portion inférieure.
- Système selon la revendication 11, caractérisé en ce que le dossier est réalisé en fibres de verre noyées dans de la mousse de polyether.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT96440052T ATE162937T1 (de) | 1996-06-28 | 1996-06-28 | Verbesserungen für systeme mit differentieller formung von rückenlehnen von bürostühlen |
ES96440052T ES2114755T3 (es) | 1996-06-28 | 1996-06-28 | Perfeccionamientos en los sistemas de flexion diferencial de los respaldos de butacas de despacho. |
DK96440052T DK0815778T3 (da) | 1996-06-28 | 1996-06-28 | Forbedringer i systemer til differentiel bøjning af ryglæn på kontorstole |
DE69600161T DE69600161T2 (de) | 1996-06-28 | 1996-06-28 | Verbesserungen für Systeme mit differentieller Formung von Rückenlehnen von Bürostühlen |
EP96440052A EP0815778B1 (fr) | 1996-06-28 | 1996-06-28 | Perfectionnement aux systèmes de flexion différentielle des dossiers de sièges de bureau |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96440052A EP0815778B1 (fr) | 1996-06-28 | 1996-06-28 | Perfectionnement aux systèmes de flexion différentielle des dossiers de sièges de bureau |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0815778A1 true EP0815778A1 (fr) | 1998-01-07 |
EP0815778B1 EP0815778B1 (fr) | 1998-02-04 |
Family
ID=8225411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96440052A Expired - Lifetime EP0815778B1 (fr) | 1996-06-28 | 1996-06-28 | Perfectionnement aux systèmes de flexion différentielle des dossiers de sièges de bureau |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0815778B1 (fr) |
AT (1) | ATE162937T1 (fr) |
DE (1) | DE69600161T2 (fr) |
DK (1) | DK0815778T3 (fr) |
ES (1) | ES2114755T3 (fr) |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000022960A1 (fr) * | 1998-10-21 | 2000-04-27 | Vitra Patente Ag | Systeme mecanique de reglage, garniture de dossier et appuis-bras pour fauteuil |
WO2002024125A1 (fr) * | 2000-09-19 | 2002-03-28 | Yoo Han Keel | Chaise permettant de corriger un alignement incorrect des vertebres de la colonne vertebrale et procede permettant de corriger un tel alignement incorrect au moyen de la chaise |
EP1057430B1 (fr) * | 1999-06-04 | 2002-07-17 | PRO-CORD s.r.l. | Chaise avec siège basculant |
WO2009033535A1 (fr) * | 2007-09-15 | 2009-03-19 | König + Neurath AG | Dossier, en particulier de chaise de bureau |
WO2010041895A2 (fr) | 2008-10-10 | 2010-04-15 | 주식회사 시디즈 | Chaise inclinable |
US7841666B2 (en) | 2002-02-13 | 2010-11-30 | Herman Miller, Inc. | Back support structure |
USD637423S1 (en) | 2010-04-13 | 2011-05-10 | Herman Miller, Inc. | Chair |
USD639091S1 (en) | 2010-04-13 | 2011-06-07 | Herman Miller, Inc. | Backrest |
NL1037679C2 (nl) * | 2010-02-03 | 2011-08-04 | Konink Ahrend N V | Stoel, in het bijzonder een bureaustoel. |
USD650206S1 (en) | 2010-04-13 | 2011-12-13 | Herman Miller, Inc. | Chair |
USD652657S1 (en) | 2010-04-13 | 2012-01-24 | Herman Miller, Inc. | Chair |
USD653061S1 (en) | 2010-04-13 | 2012-01-31 | Herman Miller, Inc. | Chair |
USD657166S1 (en) | 2010-04-13 | 2012-04-10 | Herman Miller, Inc. | Chair |
WO2012139233A1 (fr) * | 2011-04-12 | 2012-10-18 | Vitra Patente Ag | Mécanisme pour une chaise à réglage synchrone du dossier et de l'assise |
US8449037B2 (en) | 2010-04-13 | 2013-05-28 | Herman Miller, Inc. | Seating structure with a contoured flexible backrest |
DE202012007254U1 (de) * | 2012-07-26 | 2013-10-28 | Proflm Sp. Z.O.O. | Sitzmöbel, insbesondere Bürostuhl |
US20150245714A1 (en) * | 2012-10-18 | 2015-09-03 | Vitra Patente Ag | Seat With Relative Synchronous Displacement Between Back Incline And Seat Incline |
US10299595B2 (en) | 2016-06-11 | 2019-05-28 | Humanscale Corporation | Chair with articulating backrest |
US10383446B2 (en) | 2010-06-15 | 2019-08-20 | Herman Miller, Inc. | Chair |
US10842281B2 (en) | 2012-09-20 | 2020-11-24 | Steelcase Inc. | Control assembly for chair |
US11109683B2 (en) | 2019-02-21 | 2021-09-07 | Steelcase Inc. | Body support assembly and method for the use and assembly thereof |
US11229294B2 (en) | 2012-09-20 | 2022-01-25 | Steelcase Inc. | Chair assembly with upholstery covering |
US11304528B2 (en) | 2012-09-20 | 2022-04-19 | Steelcase Inc. | Chair assembly with upholstery covering |
US11357329B2 (en) | 2019-12-13 | 2022-06-14 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3072436A (en) * | 1960-04-14 | 1963-01-08 | Moore Edwin Rosco | Tilting devices for chair seats and chair backs |
DE3719784A1 (de) * | 1987-06-13 | 1988-12-22 | Roeder Soehne Sitzmoebelfab | Sitzmoebel |
US5385388A (en) * | 1991-11-12 | 1995-01-31 | Steelcase Inc. | Split back chair |
-
1996
- 1996-06-28 AT AT96440052T patent/ATE162937T1/de not_active IP Right Cessation
- 1996-06-28 ES ES96440052T patent/ES2114755T3/es not_active Expired - Lifetime
- 1996-06-28 DE DE69600161T patent/DE69600161T2/de not_active Expired - Lifetime
- 1996-06-28 EP EP96440052A patent/EP0815778B1/fr not_active Expired - Lifetime
- 1996-06-28 DK DK96440052T patent/DK0815778T3/da active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3072436A (en) * | 1960-04-14 | 1963-01-08 | Moore Edwin Rosco | Tilting devices for chair seats and chair backs |
DE3719784A1 (de) * | 1987-06-13 | 1988-12-22 | Roeder Soehne Sitzmoebelfab | Sitzmoebel |
US5385388A (en) * | 1991-11-12 | 1995-01-31 | Steelcase Inc. | Split back chair |
Cited By (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6557939B1 (en) | 1998-10-21 | 2003-05-06 | Vitra Patente Ag | Adjustment mechanism, back cover and arm rest for a chair |
WO2000022960A1 (fr) * | 1998-10-21 | 2000-04-27 | Vitra Patente Ag | Systeme mecanique de reglage, garniture de dossier et appuis-bras pour fauteuil |
EP1057430B1 (fr) * | 1999-06-04 | 2002-07-17 | PRO-CORD s.r.l. | Chaise avec siège basculant |
WO2002024125A1 (fr) * | 2000-09-19 | 2002-03-28 | Yoo Han Keel | Chaise permettant de corriger un alignement incorrect des vertebres de la colonne vertebrale et procede permettant de corriger un tel alignement incorrect au moyen de la chaise |
US7841666B2 (en) | 2002-02-13 | 2010-11-30 | Herman Miller, Inc. | Back support structure |
WO2009033535A1 (fr) * | 2007-09-15 | 2009-03-19 | König + Neurath AG | Dossier, en particulier de chaise de bureau |
EP2351500A4 (fr) * | 2008-10-10 | 2012-04-04 | Sidiz Inc | Chaise inclinable |
WO2010041895A2 (fr) | 2008-10-10 | 2010-04-15 | 주식회사 시디즈 | Chaise inclinable |
EP2351500A2 (fr) * | 2008-10-10 | 2011-08-03 | Sidiz, Inc. | Chaise inclinable |
EP2353450A3 (fr) * | 2010-02-03 | 2013-03-20 | Koninklijke Ahrend N.V. | Siège, nottamment siège de bureau |
NL1037679C2 (nl) * | 2010-02-03 | 2011-08-04 | Konink Ahrend N V | Stoel, in het bijzonder een bureaustoel. |
USD639091S1 (en) | 2010-04-13 | 2011-06-07 | Herman Miller, Inc. | Backrest |
USD652657S1 (en) | 2010-04-13 | 2012-01-24 | Herman Miller, Inc. | Chair |
USD653061S1 (en) | 2010-04-13 | 2012-01-31 | Herman Miller, Inc. | Chair |
USD650206S1 (en) | 2010-04-13 | 2011-12-13 | Herman Miller, Inc. | Chair |
USD657166S1 (en) | 2010-04-13 | 2012-04-10 | Herman Miller, Inc. | Chair |
US9301615B2 (en) | 2010-04-13 | 2016-04-05 | Herman Miller, Inc. | Seating structure with a contoured flexible backrest |
USD637423S1 (en) | 2010-04-13 | 2011-05-10 | Herman Miller, Inc. | Chair |
US8449037B2 (en) | 2010-04-13 | 2013-05-28 | Herman Miller, Inc. | Seating structure with a contoured flexible backrest |
US10383446B2 (en) | 2010-06-15 | 2019-08-20 | Herman Miller, Inc. | Chair |
WO2012139233A1 (fr) * | 2011-04-12 | 2012-10-18 | Vitra Patente Ag | Mécanisme pour une chaise à réglage synchrone du dossier et de l'assise |
DE202012007254U1 (de) * | 2012-07-26 | 2013-10-28 | Proflm Sp. Z.O.O. | Sitzmöbel, insbesondere Bürostuhl |
US11464341B2 (en) | 2012-09-20 | 2022-10-11 | Steelcase Inc. | Chair assembly with upholstery covering |
US10842281B2 (en) | 2012-09-20 | 2020-11-24 | Steelcase Inc. | Control assembly for chair |
US11229294B2 (en) | 2012-09-20 | 2022-01-25 | Steelcase Inc. | Chair assembly with upholstery covering |
US11304528B2 (en) | 2012-09-20 | 2022-04-19 | Steelcase Inc. | Chair assembly with upholstery covering |
US10028586B2 (en) * | 2012-10-18 | 2018-07-24 | Vitra Patente Ag | Seat with relative synchronous displacement between back incline and seat incline |
US20150245714A1 (en) * | 2012-10-18 | 2015-09-03 | Vitra Patente Ag | Seat With Relative Synchronous Displacement Between Back Incline And Seat Incline |
US10299595B2 (en) | 2016-06-11 | 2019-05-28 | Humanscale Corporation | Chair with articulating backrest |
US11109683B2 (en) | 2019-02-21 | 2021-09-07 | Steelcase Inc. | Body support assembly and method for the use and assembly thereof |
US11602223B2 (en) | 2019-02-21 | 2023-03-14 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
US11910934B2 (en) | 2019-02-21 | 2024-02-27 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
US11357329B2 (en) | 2019-12-13 | 2022-06-14 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
US11786039B2 (en) | 2019-12-13 | 2023-10-17 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
US11805913B2 (en) | 2019-12-13 | 2023-11-07 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
Also Published As
Publication number | Publication date |
---|---|
DE69600161D1 (de) | 1998-03-19 |
DK0815778T3 (da) | 1998-09-23 |
ATE162937T1 (de) | 1998-02-15 |
DE69600161T2 (de) | 1998-09-17 |
EP0815778B1 (fr) | 1998-02-04 |
ES2114755T3 (es) | 1998-06-01 |
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