EP1906792B1 - Chaise, en particulier chaise de bureau - Google Patents

Chaise, en particulier chaise de bureau Download PDF

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Publication number
EP1906792B1
EP1906792B1 EP06762680A EP06762680A EP1906792B1 EP 1906792 B1 EP1906792 B1 EP 1906792B1 EP 06762680 A EP06762680 A EP 06762680A EP 06762680 A EP06762680 A EP 06762680A EP 1906792 B1 EP1906792 B1 EP 1906792B1
Authority
EP
European Patent Office
Prior art keywords
seat
backrest
rotary bearing
chair according
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.)
Active
Application number
EP06762680A
Other languages
German (de)
English (en)
Other versions
EP1906792A1 (fr
Inventor
Martin Potrykus
Armin Sander
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.)
Koenig and Neurath AG
Original Assignee
Koenig and Neurath AG
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 Koenig and Neurath AG filed Critical Koenig and Neurath AG
Publication of EP1906792A1 publication Critical patent/EP1906792A1/fr
Application granted granted Critical
Publication of EP1906792B1 publication Critical patent/EP1906792B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
    • A47C31/126—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for 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
    • A47C1/03255—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, in particular an office chair, with a synchronous mechanism.
  • Modern high-quality office chairs are usually equipped with a synchronous mechanism, which ensures that the seat moves synchronously with the backrest.
  • the synchronizing mechanism is usually formed by a backrest support, which is arranged on a central support frame, is movably connected to the seat.
  • the movements of the backrest carrier are transmitted in synchronous movements of the seat.
  • a synchronous mechanism offer different possibilities. For example, from the DE 101 22 948 C1 an office chair removable, the seat inclines with a deflection of the backrest to the back towards the back. From the DE 42 19 599 C2 is an office chair removable, the seat is tilted forward with a deflection of the backrest to the rear. In both chairs shown, it is necessary to adjust the counteracting force for an inclination of the backrest according to the weight of a seated person.
  • a chair in particular an office chair, with a hinged to a support frame via a backrest support and a synchronous movable seat, which is connected in a Aufddling about a seat handlebar pivotally connected to the support frame, the backrest support and the Seat link are each rotatably mounted on the support frame, and wherein a pull rod such that the seat link is movably connected to the backrest support, that a rearward tilting movement of the backrest is translated at the Aufddling in an upward pivotal movement of the seat.
  • the invention is based in a first step on the consideration that the weight of a seated person is directed vertically downwards. If the tilting or rotary movement of the backrest is coupled directly to the seat surface via a suitably designed backrest support, then only the component which is tangential with respect to the rotational movement in the attachment point acts from the weight force. But this is the counter-force of the backrest acting against the seated person depends on their inclination.
  • the invention proceeds from the consideration of overcoming this disadvantage by movably connecting a seat link which directs the seat surface to the backrest support via a pull rod.
  • a seat link which directs the seat surface to the backrest support via a pull rod.
  • the rotation of the backrest and thus of the backrest support is transmitted via the pull rod to a rotational movement of the seat link.
  • the coupling via the pull rod offers additional mechanical degrees of freedom which allow the backrest to tilt in a certain range to implement desired upward movement of the seat.
  • Such mechanical degrees of freedom are the length of the drawbar, the location of the attachment points of the drawbar on the backrest support and the seat link and the position of the backrest support to the seat link.
  • the basic principle acting here is based on the fact that, in the case of a coupling of a rotary movement with a movable drawbar, the movement effected per rotation angle parallel to the pull rod is in turn dependent on the absolute rotational position.
  • the described Coupling between seat link and backrest support with a pull rod can therefore be used to compensate for the described undesirable dependence of the generated per angular difference of the backrest stroke of the seat of the absolute inclination angle of the backrest.
  • the backrest support is rotatably mounted on the support frame via a pivot bearing and has a pivot bearing on which the pull rod is rotatably mounted, wherein the pivot bearing in which the pull rod is mounted, in the direction of the seat link before and in the direction of the seat over the Rotary bearing is arranged over which the backrest support is attached.
  • This geometry ensures that a rearward tilting movement of the backrest support leads from the beginning to an offset of the drawbar.
  • About the coupling of the drawbar to the seat handlebars steering the seat can be achieved in this way a favorable for the automatic weight increase the increase of the seat.
  • the backrest support on an angled pivot arm on which the pull rod is rotatably mounted By means of an angled pivoting arm, the angle position between the drawbar and the tangent of the rotational movement of the backrest support can be set to save material in the initial or resting state of the chair in the attachment point.
  • the seat link is rotatably mounted on the seat. This allows for a rotational movement of the seat link relative to the support frame maintaining the orientation of the seat.
  • the seat link is designed as a joint element, in particular as a hinge plate, with a first, a second and a third pivot bearing. About the first and the second pivot bearing the seat is connected to the support frame. In the third pivot bearing the drawbar is mounted.
  • This embodiment is cost-effective and allows a mechanically simple, movable coupling between the seat and the support frame.
  • the seat is guided in a spaced from the Auftician further Aufddling by means of a support frame mounted on the support member such that in an upward pivotal movement at the Auftician an overall tilt of the seat is effected towards the backrest.
  • the increasing forward inclination of the seat back pressure of the seated person is absorbed by the appropriately oriented inclination of the seat. Slipping of the seated person is thus prevented.
  • the guidance of the seat by means of the seat guide element in a further Auf Vietnamese allows a great deal of freedom in the design of the desired synchronous movement of the seat with respect to the deflection of the backrest.
  • the seat link and the seat guide element cooperate in such a way that raised by a rearward tilting movement of the backrest of the Auf Vietnamese and the other Auf Vietnamese is pushed backwards up.
  • the Auftician raised in a rotational movement and the other Auftician is pushed by the rotational movement, a slight embodiment of the raising of the seat with a desired inclination curve is possible.
  • the seat guide element is designed as a slotted guide.
  • the slotted guide allows in addition to the leadership in accordance with the predetermined link shape as a further degree of freedom a rotational movement. As a result, the movement of the seat can be influenced and predetermined within certain limits in a simple manner.
  • the slide guide on a curved guide. Due to the curvature, the progression of the increase of the further point of the seat is adjustable. This can be in conjunction with the upward pivoting movement of the front point of the movement course of the seat as such predetermined.
  • the slotted guide on a linear guide is low feasible.
  • a progression of the upward movement of the further point can also be achieved with a linear guide in such a way that the seat surface inclines when the backrest is deflected and, in addition, the more the overall height increases with increasing deflection of the backrest.
  • the connecting line between the third pivot bearing and the first pivot bearing with the connecting line between the third pivot bearing and the pivot bearing in which the tie rod is mounted approximately includes a right angle and the connecting line between the pivot bearing for mounting the drawbar and the third pivot bearing with the connecting line between the pivot bearing in which the drawbar is mounted, and the pivot bearing in which the backrest support is mounted, an angle of more than 90 ° , in particular more than 120 °.
  • a further stable variant of the synchronization mechanism is arranged in total mirror-symmetrical to both sides of the seat. It is particularly expedient to form the joint elements as flat hinge plates.
  • Fig. 1 shows in a side view schematically an office chair 1, which has a seat 3 and a backrest 5.
  • the chair 1 also has a central chair column 7, which - not shown - by a pedestal, especially a bogie with wheels, is worn.
  • a central support frame 8 is arranged, on which the seat surface 3 and the backrest 5 are articulated via a seat link 9 or a backrest support 10.
  • the backrest support 10 is rotatably mounted on the pivot bearing 11 to the support frame 8.
  • the seat 3 is also rotatably mounted in a first pivot bearing 17 on the support frame 8 via the seat link 9 designed as a joint element 13.
  • the joint element 13 has, in addition to the first pivot bearing 17, a second pivot bearing 18 and a third pivot bearing 19.
  • the seat surface 3 is mounted in a Auftician 15, so that the seat surface 3 can perform a total pivoting movement relative to the support frame 8.
  • the joint member 9 engages a tie rod 22, whose other end is connected via the pivot bearing 23 with an angled pivot arm 25 of the back support 10.
  • the seat 3 is connected via a slotted guide 30 on the support frame 8.
  • the operation of the office chair 1 is from a comparison of Fig. 1 and 2 seen. While Fig. 1 - which mentions - the office chair 1 shows at rest, is in Fig. 2 the office chair 1 shown in deflected form.
  • the pivot arm 25 moves according to the performed tilt of the backrest 5 by about one hour. It is at the end of the movement according to the in Fig. 2 assumed position of the office chair 1, the pull rod 22 is aligned tangentially to the rotational movement of the pivot arm 25.
  • the backrest 5 is possible such that the force acting on the backrest 5 in addition heavy weight of the seated person is taken into account.
  • the counterpressure automatically adapts to the body weight of the seated person via the synchronization mechanism.
  • Fig. 3 shows in a side view schematically an office chair 1 ', wherein the further Auftician 27 of the seat surface 3 moves in deflection of the backrest support 10 in a linear slotted guide 30' to the right.
  • the linear slotted guide 30 ' is designed so that the seating surface 3 tends to the backrest 5 with progressive movement of the backrest and is increasingly raised overall.

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)
  • Hydrogenated Pyridines (AREA)

Claims (11)

  1. Siège ou chaise, notamment siège de bureau (1, 1'), comprenant un dossier (5) qui est articulé sur une structure de support (8) par l'intermédiaire d'un support de dossier (10), ainsi qu'une surface d'assise (3) qui est mobile de manière synchrone par rapport au dossier et est rattachée de manière pivotante à la structure de support (8) au niveau d'un point d'appui (15) par l'intermédiaire d'une biellette d'assise (9), siège dans lequel le support de dossier (10) et la biellette d'assise (9) sont fixés chacun de manière rotative sur la structure de support (8), et dans lequel un tirant (22) relie de manière mobile la biellette d'assise (9) au support de dossier (10) de façon telle, qu'un mouvement de basculement du dossier (5), dirigé vers l'arrière, soit converti au niveau du point d'appui (15) en un mouvement de pivotement vers le haut de la surface d'assise (3).
  2. Siège selon la revendication 1,
    dans lequel le support de dossier (10) est fixé de manière rotative à la structure de support (8) par l'intermédiaire d'un palier de rotation (11), et comporte un palier de rotation (23) où est monté en rotation le tirant (22), et qui est agencé, en direction de la biellette d'assise (9), devant, et en direction de la surface d'assise (3), au-dessus du palier de rotation (11).
  3. Siège selon la revendication 1 ou la revendication 2, dans lequel le support de dossier (10) présente un bras pivotant coudé (25), sur lequel est articulé de manière rotative le tirant (22).
  4. Siège selon l'une des revendications précédentes,
    dans lequel la biellette d'assise (9) est articulée de manière rotative à la surface d'assise (3).
  5. Siège selon l'une des revendications précédentes,
    dans lequel la biellette d'assise (9) est réalisée en tant qu'élément d'articulation (13), notamment en tant que plaque d'articulation, comportant un premier (17), un deuxième (18) et un troisième palier de rotation (19), la surface d'assise (3) étant reliée à la structure de support (8) par l'intermédiaire du premier (17) et du deuxième palier de rotation (18).
  6. Siège selon l'une des revendications précédentes,
    dans lequel la surface d'assise (3) est guidée, au niveau d'un autre point d'appui (27) situé à distance du point d'appui (15), au moyen d'un élément de guidage d'assise monté sur la structure de support (8), le guidage s'effectuant de façon telle que pour un mouvement de pivotement de la surface d'assise (3) vers le haut, il se produise au point d'appui, globalement, une inclinaison de la surface d'assise (3) vers le dossier (5).
  7. Siège selon la revendication 6,
    dans lequel la biellette d'assise (9) et l'élément de guidage d'assise coopèrent de façon telle, que sous l'effet d'un mouvement de basculement du dossier (5), dirigé vers l'arrière, le point d'appui (15) soit soulevé et l'autre point d'appui (27) soit repoussé vers l'arrière et vers le haut.
  8. Siège selon la revendication 6 ou la revendication 7, dans lequel l'élément de guidage d'assise est réalisé sous la forme d'un guide à coulisse (30).
  9. Siège selon la revendication 8,
    dans lequel le guide à coulisse (30) présente un guide courbe.
  10. Siège selon la revendication 8,
    dans lequel le guide à coulisse (30) présente un guide linéaire.
  11. Siège selon l'une des revendications 5 à 10,
    dans lequel la droite de liaison entre le troisième palier de rotation (19) et le premier palier de rotation (17) forme approximativement un angle droit avec la droite de liaison entre le troisième palier de rotation (19) et le palier de rotation (23) où est articulé le tirant (22), et dans lequel la droite de liaison entre le palier de rotation (23) pour l'articulation du tirant (22) et le troisième palier de rotation (19) forme avec la droite de liaison entre le palier de rotation (23) et le palier de rotation (11) où est articulé le support de dossier (10), un angle de plus de 90°, notamment de plus de 120°.
EP06762680A 2005-07-27 2006-07-19 Chaise, en particulier chaise de bureau Active EP1906792B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202005011725U DE202005011725U1 (de) 2005-07-27 2005-07-27 Stuhl, insbesondere Bürostuhl
PCT/EP2006/007077 WO2007012418A1 (fr) 2005-07-27 2006-07-19 Chaise, en particulier chaise de bureau

Publications (2)

Publication Number Publication Date
EP1906792A1 EP1906792A1 (fr) 2008-04-09
EP1906792B1 true EP1906792B1 (fr) 2010-02-24

Family

ID=37074964

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06762680A Active EP1906792B1 (fr) 2005-07-27 2006-07-19 Chaise, en particulier chaise de bureau

Country Status (6)

Country Link
EP (1) EP1906792B1 (fr)
AT (1) ATE458423T1 (fr)
AU (1) AU2006274242A1 (fr)
DE (2) DE202005011725U1 (fr)
ES (1) ES2339151T3 (fr)
WO (1) WO2007012418A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015103592U1 (de) 2015-07-08 2016-10-11 Figueroa Büro für Gestaltung GmbH Stuhl mit einer Synchronmechanik zum synchronen Verstellen des Sitzelementes bei Verschwenken der Rückenlehne
DE102015111016A1 (de) 2015-07-08 2017-01-12 Figueroa Büro für Gestaltung GmbH Stuhl mit einer Synchronmechanik zum synchronen Verstellen des Sitzelementes bei Verschwenken der Rückenlehne
US11350750B2 (en) 2018-04-17 2022-06-07 L&P Property Management Company Tilt mechanism for a chair and chair

Families Citing this family (19)

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Publication number Priority date Publication date Assignee Title
DE502008002234D1 (de) * 2007-07-07 2011-02-17 Koenig & Neurath Ag Stuhl, insbesondere bürostuhl
DE102007059986A1 (de) * 2007-12-11 2009-06-18 Sedus Stoll Ag Bürostuhl
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
US8973995B2 (en) 2009-02-25 2015-03-10 Donati S.P.A. Device for synchronizing the tilt of a chair back and seat
CN102133004A (zh) * 2010-01-22 2011-07-27 刘荣兵 按摩椅
PL2538820T3 (pl) 2010-02-26 2014-07-31 Donati Spa Urządzenie do synchronizacji siedziska i oparcia krzesła
US9458905B2 (en) * 2012-09-20 2016-10-04 Steelcase Inc. Spring assembly and method
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering
USD697726S1 (en) 2012-09-20 2014-01-21 Steelcase Inc. Chair
PL2886015T3 (pl) 2013-12-17 2017-01-31 Donati S.P.A. Fotel z regulowanym oparciem
PL2896325T3 (pl) * 2014-01-20 2018-07-31 L&P Property Management Company Mechanizm TILT do mebli do siedzenia i meble do siedzenia zawierające ten mechanizm
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
BR112017022038B1 (pt) 2015-04-13 2021-11-03 Steelcase Inc. Disposição de assento
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
AU2020224628A1 (en) 2019-02-21 2021-08-26 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
IT201900002723A1 (it) * 2019-02-26 2020-08-26 Brado S P A Sedia
DE102019113582B4 (de) * 2019-05-21 2022-06-15 Bock 1 Gmbh & Co. Kg Synchronmechanik
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
NL2026485B1 (en) * 2020-09-16 2022-05-16 Npk Design B V Adjustable chair

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Publication number Priority date Publication date Assignee Title
US3139305A (en) * 1962-05-09 1964-06-30 Gen Steel Products Inc Reclining chair and fixture
DE8614186U1 (de) * 1986-05-26 1986-07-17 Drabert Söhne GmbH & Co, 4950 Minden Stuhl
DE3930983C2 (de) * 1989-09-16 1993-09-30 Rolf Voelkle Sitzmöbel mit neigungsverstellbarer Sitzfläche
DE19823632C1 (de) * 1998-05-27 1999-09-30 Roeder Peter Stuhl, insbesondere Bürostuhl
JP3999453B2 (ja) * 2000-10-16 2007-10-31 コクヨ株式会社 椅子
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015103592U1 (de) 2015-07-08 2016-10-11 Figueroa Büro für Gestaltung GmbH Stuhl mit einer Synchronmechanik zum synchronen Verstellen des Sitzelementes bei Verschwenken der Rückenlehne
DE102015111016A1 (de) 2015-07-08 2017-01-12 Figueroa Büro für Gestaltung GmbH Stuhl mit einer Synchronmechanik zum synchronen Verstellen des Sitzelementes bei Verschwenken der Rückenlehne
DE102015111016B4 (de) 2015-07-08 2021-07-15 Figueroa Büro für Gestaltung GmbH Stuhl mit einer Synchronmechanik zum synchronen Verstellen des Stuhlträgers bei Verschwenken der Rückenlehne
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
AU2006274242A1 (en) 2007-02-01
DE202005011725U1 (de) 2006-12-07
WO2007012418A1 (fr) 2007-02-01
ATE458423T1 (de) 2010-03-15
EP1906792A1 (fr) 2008-04-09
ES2339151T3 (es) 2010-05-17
DE502006006259D1 (de) 2010-04-08

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