EP0900035B1 - Chaise a mecanisme de synchronisation - Google Patents

Chaise a mecanisme de synchronisation Download PDF

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Publication number
EP0900035B1
EP0900035B1 EP98903022A EP98903022A EP0900035B1 EP 0900035 B1 EP0900035 B1 EP 0900035B1 EP 98903022 A EP98903022 A EP 98903022A EP 98903022 A EP98903022 A EP 98903022A EP 0900035 B1 EP0900035 B1 EP 0900035B1
Authority
EP
European Patent Office
Prior art keywords
seat
backrest
backrest support
support
chair
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
EP98903022A
Other languages
German (de)
English (en)
Other versions
EP0900035A1 (fr
Inventor
Jörg ASSMANN
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.)
Comforto GmbH
Original Assignee
Comforto GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Comforto GmbH filed Critical Comforto GmbH
Publication of EP0900035A1 publication Critical patent/EP0900035A1/fr
Application granted granted Critical
Publication of EP0900035B1 publication Critical patent/EP0900035B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a chair with synchronous mechanism from the type specified in the preamble of claim 1.
  • synchronous mechanism is an articulated coupling between Seat and backrest such that a change in inclination the backrest automatically with a change in inclination the seat, and vice versa. This improves the seating comfort, because with an upright posture a about horizontal adjustment of the seat and when leaning back Back posture in a sloping position the seat is desired.
  • Chairs with synchronous mechanism are known in numerous versions, for example the publications DE 30 33 953 C2, DE 36 08 718 C3 and DE 38 34 614 A1 can be called.
  • the relationship between the coupled inclination changes of the seat and the backrest i.e. the so-called synchronous course the mutual distances between the pivot axes and articulation points certainly.
  • a chair with synchronous mechanism is known from US-A-5423594, where by changing the length of the backrest support with the base connecting the chair the synchronous ratio can be changed. By changing the length the handlebar also changes the angle between the backrest and seat in the normal position of the See.
  • US-A-5560682 discloses a chair with synchronous mechanism, in which also changes the synchronous process can that the geometry of the backrest support and the Basic structure of the handlebar connection connecting the chair is changed, but only by changing elements the handlebar connection is possible.
  • a chair is known, optionally with or can be executed without synchronous mechanics depending on whether there is a connecting link between the seat and backrest support or between the seat and the base structure of the Chair is arranged.
  • the choice between these two positions the handlebar must be made by the manufacturer, a Adjustment by the user is not provided.
  • the invention has for its object a chair mentioned type so that the synchronous course, i.e. the relationship between the coupled slope changes of the seat and backrest by the user in a simple manner can be changed.
  • the basic idea of the invention is to determine the relationship between the coupled changes in inclination of the seat and backrest not by changing the effective length of one that couples them Handlebar change, but by moving the Handlebar relative to the seat and backrest pivot axis. Because the joints of the handlebar in the slots of the seat and the backrest support are slidably guided and these slots in the normal position of the chair is approximately horizontal and thus is also approximately parallel to each other, by Moving the handlebar in the slots does not incline the backrest changes relative to the seat in the normal position, but only the relationship between the changes in inclination of the backrest and seat.
  • a chair column 1 On a chair column 1 is rotatable in a conventional manner and a seat support 3 adjustable in height.
  • the area of the seat support 3 is about a horizontal axis 5 the seat 7 rotatably mounted.
  • This seat pivot axis 5 is located preferably below the front part of the seat 7.
  • a second horizontal axis of rotation on the seat support 3 9 formed around which a backrest support 11 rotatably mounted is who carries a backrest 13.
  • the backrest support 11 is with the seat 7 by a coupling link 15 articulated coupled.
  • the coupling link 15 an upper journal 15a, which is in an approximately horizontal Slot 17 of the seat 7 engages, and a lower Bearing pin 15b, which is in an approximately horizontal Slot 19 of the backrest support 11 engages.
  • the bearing journals 15a, 15b can be moved in the slots 17, 19, and the position of the coupling link 15 in the longitudinal direction the slots 17, 19 can by means of a screw spindle 21 are adjusted and fixed, which are mounted on the seat support 7 and is rotated by the user with a handwheel 23 can.
  • the coupling link 15 with its journals 15a and 15b and the slots 17, 19 in pairs on both sides of the vertical central plane the seat can be provided. Alternatively, they can also simply provided in the middle plane of the chair his.
  • the coupling link 15 moved in the longitudinal direction of the slots 17, 19 and thereby the distance between those formed by the journals 15a, 15b Hinge points from the seat and backrest pivot axis 5 and 9 can be changed.
  • the coupling link 15 shown in its left or front end position in which the pivot pin 15a of the pivot axis 5 of the seat 7 has the smallest possible distance A. If in this position the coupling arm 15 of the backrest support 11 with the backrest 13 by the angle ⁇ backwards into the dashed position 11 ', 13' shown is pivoted, the seat 7, since he with the backrest support 11 through the coupling link 15 is coupled by the angle ⁇ after pivoted below.
  • the ratio between the angles ⁇ and ⁇ depends on the distance of the coupling link 15 from the Swivel axes 5 and 9. In the shown left end position the coupling link 15 results in the smallest Seat recline angle ⁇ at a given recline angle ⁇ , i.e. the ratio of the seat angle ⁇ Backrest inclination angle ⁇ , the so-called synchronous ratio, has the smallest possible value. It is in the illustrated Example approx. 0.4: 1.
  • the coupling link 15 by means of the spindle 21 after shifted to the right until the bearing pin 15a the right or has reached the rear end of the slot 17 and from the Pivot axis 5 of the seat 7 the greatest possible distance B then the backrest support is inclined backwards 11 by the same angle ⁇ of the seat 7 through the Coupling link 15 by an angular amount ⁇ '(not shown) pulled down, which is significantly larger than the drawn angle ⁇ .
  • ⁇ ' the ratio of the angle ⁇ 'to the angle ⁇ has a larger value.
  • the synchronous ratio in the right end position of the coupling link 15 approx. 0.7: 1.
  • the device for moving the articulated connection can also be used between seat 7 and backrest support 11 relative to whose pivot axes 5 and 9 mechanically in a different way than using guide slots and screw spindles his.
  • the mechanical adjustment shown adjustment by means of an electric motor can also be considered to be pulled.
  • a stepless adjustment a setting in a number of predetermined steps be provided.
  • the change in the synchronous ratio also by moving the seat and / or backrest swivel axis 5, 9 can be brought about relative to the articulated coupling 15.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)

Claims (3)

  1. Chaise à mécanisme de synchronisation avec
    un châssis (3),
    un siège (7), monté sur le châssis (3) pivotant autour d'un axe de pivotement horizontal de siège (5) réel ou imaginaire et pouvant pivoter vers le bas à partir de sa position normale,
    un support de dossier (11) portant un dossier (13) monté sur le châssis (3) pivotant autour d'un axe de pivotement horizontal de dossier (9) réel ou imaginaire et pouvant pivoter vers l'arrière à partir de sa position normale,
    et un levier (15) qui est relié à ses deux extrémités au siège (7) respectivement au support de dossier (11) au moyen d'articulations (15a, 15b) et qui accouple leurs mouvements de pivotement entre eux,
    le rapport entre les modifications des angles de pivotement (α, β) du siège (7) et du support de dossier (11), c'est à dire le déroulement synchrone, est fixé par les écarts des articulations (15a, 15b) entre l'axe de pivotement du siège (5) et l'axe de pivotement du dossier (9),
    caractérisée en ce que les articulations (15a, 15b) du levier (15) sont guidées à coulissement dans des fentes (17, 19) du siège (7) et du support de dossier (11), en ce que les fentes dans la position normale du siège (7) et du support de dossier (11) s'étendent à peu près horizontalement et en ce que le levier (15) peut être déplacé par pas ou en continu le long des fentes (17, 19) par un mécanisme de réglage (21) et fixé.
  2. Chaise selon la revendication 1, caractérisée en ce que le mécanisme de réglage est une broche filetée (21).
  3. Chaise selon la revendication 1 ou 2, caractérisée en ce que la distance de réglage du levier (15) par rapport au siège (7) et au support de dossier (11) est choisie de telle sorte que le rapport de synchronisation, c'est à dire le rapport d'une modification d'angle d'inclinaison du siège (7) à la modification d'angle d'inclinaison du support de dossier (11) couplée avec elle, est, à une extrémité de la zone de réglage, inférieur à 0,5:1, notamment environ 0,4:1 ou moins, et, à l'autre extrémité de la zone de réglage, notamment environ 0,7:1 ou plus.
EP98903022A 1997-01-23 1998-01-22 Chaise a mecanisme de synchronisation Expired - Lifetime EP0900035B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19702328A DE19702328A1 (de) 1997-01-23 1997-01-23 Stuhl mit Synchronmechanik
DE19702328 1997-01-23
PCT/EP1998/000342 WO1998032353A1 (fr) 1997-01-23 1998-01-22 Chaise a mecanisme de synchronisation

Publications (2)

Publication Number Publication Date
EP0900035A1 EP0900035A1 (fr) 1999-03-10
EP0900035B1 true EP0900035B1 (fr) 2002-11-06

Family

ID=7818161

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98903022A Expired - Lifetime EP0900035B1 (fr) 1997-01-23 1998-01-22 Chaise a mecanisme de synchronisation

Country Status (4)

Country Link
US (1) US5931531A (fr)
EP (1) EP0900035B1 (fr)
DE (2) DE19702328A1 (fr)
WO (1) WO1998032353A1 (fr)

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US6139103A (en) * 1997-03-12 2000-10-31 Leggett & Platt, Inc. Synchronized chair seat and backrest tilt control mechanism
IT245520Y1 (it) * 1998-07-16 2002-03-22 Beniamino Miotto Dispositivo meccanico particolarmente per la movimentazione sincronadi sedile e schienale di una sedia.
US6709058B1 (en) * 1999-04-09 2004-03-23 Humanscale Corp. Ergonomic chair
IT1308074B1 (it) * 1999-06-04 2001-11-29 Pro Cord Srl Sedia con sedile e schienale oscillanti in modo sincronizzato
DE29910620U1 (de) * 1999-06-17 2000-10-19 König + Neurath AG, 61184 Karben Stuhl, insbesondere Bürostuhl
GB9917307D0 (en) * 1999-07-23 1999-09-22 Sec Dep Of The Home Department Improvements in and relating to analysis of DNA
DE10026475A1 (de) * 2000-05-27 2001-12-06 Haworth Bueroeinrichtung Gmbh Stuhl
AU783829B2 (en) 2000-09-28 2005-12-08 Formway Furniture Limited A reclinable chair
AUPR054400A0 (en) 2000-09-29 2000-10-26 Formway Furniture Limited A castor
US6588843B1 (en) * 2000-10-06 2003-07-08 Ghsp, Incorporated Chair control
US6820934B2 (en) * 2000-11-09 2004-11-23 Michigan Tube Swagers & Fabricators, Inc. Chair having flexible back support
US6471293B2 (en) 2000-11-09 2002-10-29 Michigan Tube Swagers & Fabricators, Inc. Stackable chair with flexible back support
DE10122948C1 (de) * 2001-05-11 2003-03-13 Armin Sander Stuhl, insbesondere Bürostuhl
DE10122946C1 (de) * 2001-05-11 2003-01-30 Armin Sander Stuhl, insbesondere Bürostuhl
US6805412B2 (en) * 2001-08-30 2004-10-19 Burgess Furniture Ltd. Stackable chair with flexible back
US6869142B2 (en) * 2002-09-12 2005-03-22 Steelcase Development Corporation Seating unit having motion control
US7165811B2 (en) * 2002-09-12 2007-01-23 Steelcase Development Corporation Control mechanism for seating unit
US7048335B2 (en) * 2003-06-05 2006-05-23 Steelcase Development Corporation Seating unit with crossbar seat support
TWI259067B (en) 2004-05-13 2006-08-01 Humanscale Corp Mesh chair component and manufacturing method thereof
TWI260977B (en) * 2005-02-05 2006-09-01 Tung Yu O A Co Ltd Chair seat with slipping function
US7478880B2 (en) * 2005-03-08 2009-01-20 L&P Property Management Company Multi-purpose adjustment chair mechanism
USD623449S1 (en) 2005-05-13 2010-09-14 Humanscale Corporation Mesh backrest for a chair
US8061775B2 (en) * 2005-06-20 2011-11-22 Humanscale Corporation Seating apparatus with reclining movement
EP2010025A4 (fr) * 2006-04-24 2010-11-17 Humanscale Corp Chaise offrant une résistance autoréglable au basculement
USD661135S1 (en) 2006-06-20 2012-06-05 Humanscale Corporation Pair of armrests for a chair or the like
WO2008112919A1 (fr) * 2007-03-13 2008-09-18 Hni Technologies Inc. Mécanisme à six barres et commande pour chaise
US7347496B1 (en) * 2007-06-18 2008-03-25 Chih Chiang Wang Adjustable chair backrest
CN102098945B (zh) 2008-05-02 2013-11-06 霍沃思公司 用于重力响应式椅子的张力机构
US20110304192A1 (en) * 2010-06-15 2011-12-15 Augustat Betty A Ergometric Chair Apparatus
GB201014953D0 (en) * 2010-09-08 2010-10-20 Birkbeck Hilary R Slide chair action
DE102011010099A1 (de) * 2011-02-01 2012-08-02 Bock 1 Gmbh & Co. Kg Synchronmechanik
US20130175841A1 (en) * 2012-01-11 2013-07-11 James W. Finck Reclining seat assembly
US9504326B1 (en) 2012-04-10 2016-11-29 Humanscale Corporation Reclining chair
US10167083B2 (en) * 2014-04-02 2019-01-01 B/E Aerospace, Inc. Cradle recline mechanism for fixed-shell aircraft seat
CN106455821A (zh) 2014-04-17 2017-02-22 Hni技术公司 椅子和椅子控制组件、系统和方法
JP6391089B2 (ja) * 2014-07-28 2018-09-19 コイト電工株式会社 座席装置
PL3691497T3 (pl) * 2017-10-05 2024-08-26 Godrej & Boyce Mfg. Co. Ltd. Krzesło do pracy dostosowujące się do postawy
US11021255B2 (en) * 2018-01-30 2021-06-01 Rockwell Collins, Inc. Work-and-dine aircraft seat with tilt and shift articulation
US10820703B2 (en) * 2018-09-17 2020-11-03 Sedus Stoll Ag Chair, particularly conference or office chair, and method for manufacturing a chair

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Also Published As

Publication number Publication date
DE59806164D1 (de) 2002-12-12
EP0900035A1 (fr) 1999-03-10
US5931531A (en) 1999-08-03
WO1998032353A1 (fr) 1998-07-30
DE19702328A1 (de) 1998-07-30

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