WO2008092562A1 - Chaise, notamment chaise de bureau - Google Patents

Chaise, notamment chaise de bureau Download PDF

Info

Publication number
WO2008092562A1
WO2008092562A1 PCT/EP2008/000287 EP2008000287W WO2008092562A1 WO 2008092562 A1 WO2008092562 A1 WO 2008092562A1 EP 2008000287 W EP2008000287 W EP 2008000287W WO 2008092562 A1 WO2008092562 A1 WO 2008092562A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat
backrest
chair according
pivot bearing
link
Prior art date
Application number
PCT/EP2008/000287
Other languages
German (de)
English (en)
Inventor
Armin Sander
Martin Potrykus
Original Assignee
Armin Sander
Martin Potrykus
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 Armin Sander, Martin Potrykus filed Critical Armin Sander
Publication of WO2008092562A1 publication Critical patent/WO2008092562A1/fr

Links

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
    • A47C1/033—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest the coupling member being a flexible strip
    • 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

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.
  • DE 101 22 948 C1 an office chair can be removed whose seat surface inclines with a deflection of the backrest to the rear towards the back.
  • DE 42 19 599 C2 an office chair can be removed, the seat surface inclines with a deflection of the backrest to the rear opposite to the front.
  • 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 link pivotally connected to the support frame, the backrest support and the Seat link are each rotatably mounted on the support frame, and wherein a drive belt 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. Is a suitably designed backrest support the tilting or rotating movement of the
  • the invention is based on the consideration, in order to overcome this disadvantage, the seat link with the backrest support to connect via a drive belt movable.
  • the rotational movement of the backrest and thus of the backrest carrier is transmitted via the drive belt to a rotational movement of the seat link.
  • the coupling via a drive belt in contrast to a direct coupling additional mechanical degrees of freedom that allow to implement the inclination of the backrest in a certain range in a desired upward movement of the seat.
  • Such mechanical degrees of freedom are the length of the drive belt, the location of the attachment points of the drive belt on the backrest support and on the seat link and the position of the backrest support to the seat link.
  • a corresponding guide of the drive belt can be formed, which generates a desired upward movement of the seat in dependence on the inclination of the backrest carrier.
  • the underlying principle is based on that, in the case of a coupling of a rotary movement by means of a drive belt, the offset caused per rotational angle along the drive belt is in turn dependent on the absolute rotational position.
  • the described coupling between seat link and backrest support by means of a drive belt can thus be used to compensate for the described undesirable dependence of the generated per degree of angle of the backrest stroke of the seat of the absolute inclination angle of the backrest.
  • a drive belt is basically any material which has a force adapted to the forces acting and a sufficient flexibility for leadership, but as little or no elasticity shows as little as possible.
  • a belt, a chain or a rope can be suitably used as a band.
  • several equal drive belts can be used for coupling between the backrest carrier and the seat link.
  • the backrest support is rotatably mounted via a first pivot bearing on the support frame, wherein the backrest support is associated with a first Abrollschulter over which the drive belt is guided to a first connection point on the backrest support.
  • a guide for the drive belt during the rotational movement is specified. Due to the configuration of the rolling shoulder thus the rotational movement of the backrest carrier can be deliberately implemented in a desired rotational movement of the seat link and thus to a correspondingly predetermined upward movement of the seat.
  • the transmission of the rotational movement of the backrest carrier can be converted into a movement along the drive belt in a simple manner.
  • the design of the rolling shoulder sets for each angular position of the backrest support the translation of the angle of rotation in a translation along the drive belt.
  • the Abrollschulter itself can be formed by the backrest support itself or put on this. It is also conceivable to connect the backrest support via an axis of rotation with an auxiliary element, which then has the rolling shoulder.
  • the auxiliary element is to be arranged, for example, below the seat.
  • the first rolling shoulder is arranged in the direction of the seat link in front of and in the direction of the seat surface above the first pivot bearing. This geometry ensures that a rearward tilting movement of the backrest carrier leads from the beginning to a pulling movement along the drive belt. About the connection of the drive belt to the seat steering handlebar can be achieved in this way a favorable for the automatic weight increase the increase of the seat.
  • the first rolling shoulder along the direction of the seat link on an increasing distance from the first pivot bearing This ensures that, starting from the resting state of the chair with increasing deflection of the backrest carrier, an increased translational displacement of the drive belt is generated.
  • the drive belt runs starting from the resting state of the chair with increasing tilting of the backrest carrier further spaced from the first pivot bearing.
  • Analog transmitted to a gearwheel circuit corresponds to the choice of a larger drive gear with greater deflection of the backrest carrier.
  • the seat link is rotatably mounted via a second pivot bearing on the support frame, wherein the seat link is assigned a second Abrollschulter over which the drive belt is guided to a second connection point on the seat link.
  • the second Abrollschulter is arranged in the direction of the backrest support behind and in the direction of the seat over the second pivot bearing.
  • an initial tilting movement of the backrest support already leads to an upward pivotal movement of the seat.
  • the second Abrollschulter preferably along the direction of the backrest support an increasing distance to the second pivot bearing. This makes it possible, with greater inclination of the backrest to implement an absolute offset of the drive belt in a larger angle of rotation of the seat link than at a smaller tilt angle. This additional measure also leads to a favorable with regard to the automatic weight increase course of the increase in the seat.
  • the second rolling shoulder can also be part of the seat link, be formed by the seat link, or a part of an auxiliary element, which is connected to the seat link represent.
  • the first rolling shoulder is formed by an outer contour of the backrest support.
  • This offers itself as a structurally simple embodiment, especially since the backrest support is not coupled with its outer contour to other mechanical parts.
  • the second rolling shoulder makes sense to form the second rolling shoulder by the contour of a top surface.
  • the seat link is mounted at both ends each in a pivot bearing, which complicates a meaningful use of its outer contour as Abrollschulter.
  • the respective rolling shoulders can also be formed by auxiliary elements connected to the seat link or the backrest support, which are arranged, for example, below the seat surface.
  • 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 of the seat at the Auf Vietnamese an overall tilt of the seat is effected to the backrest.
  • a support frame mounted on the support member such that in an upward pivotal movement of the seat at the Auf Vietnamese an overall tilt of the seat is effected to 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 leadership of the seat by means of Seat guide element in another Aufddling 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 guide element can basically be configured as desired.
  • seat guide element form as a slotted guide.
  • the slotted guide allows in addition to the guide according to the predetermined backdrop shape as a further degree of freedom a rotational movement.
  • the movement of the seat can be influenced and predetermined within certain limits in a simple manner.
  • the progression of the increase of the further Aufticians the seat is adjustable via the slotted guide, for example, in a curved configuration.
  • a simple design refinement is to design the seat guide element as a further seat link, which is mounted rotatably on the support frame and on the seat surface by means of pivot bearings.
  • the seat, the two seat arms and the support frame interact in the manner of a four-bar linkage together.
  • the pivot bearing of the seat handlebar and the other seat handlebars form the hinges.
  • Such a four-joint coupling mechanism has a single degree of freedom with respect to its movement. In this respect, can be specified by the length and arrangement and spacing of the seat link exactly the desired movement of the seat, which adjusts to the coupling of the backrest carrier as a drive member.
  • the connecting axis of the pivot bearing of the seat link with the connecting axis of the pivot bearing of the other seat link einsch manufacten an angle.
  • the increase in the seat with an inclination is predetermined in the desired manner. If, for example, the angle of inclination of the seat link relative to the horizontal in the resting state of the chair is steeper than the angle of inclination of the further seat link, then a rotation of the seat link leads to a tilting of the seat towards the backrest.
  • the coupling mechanism described by means of backrest support, drive belt and seat link can be both one piece, for example, centrally under the seat, as well as several parts, and in this case in particular symmetrically on both sides of the seat executed. Also, a combination of both options is conceivable.
  • Fig. 1 in a side view schematically an office chair with a
  • Weight mechanism in rest position, wherein the seat is mounted on a seat link on a support frame and
  • FIG. 2 shows a schematic side view of the office chair according to FIG. 1 in the deflected position.
  • Figure 1 shows a side view schematically an office chair 1 in the rest position, which has a seat 3 and a backrest 5.
  • the office chair 1 further comprises a central chair column 7, which - not shown - is supported by a pedestal, in particular by a bogie with wheels.
  • 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 attached to the support frame 8 via a first pivot bearing 11.
  • the seat 3 is connected in a pivot point 13 on the seat link 9 pivotally connected to the support frame 8.
  • the seat 3 is also connected by means of another seat link 15 in a further Auftician 17 also pivotally connected to the support frame 8.
  • the seat 3, the seat link 9, the other seat link 15, and the support frame 8 together form a four-joint coupling mechanism.
  • the seat link 9 is driven as part of the four-joint coupling drive of the backrest carrier 10.
  • a drive belt 23 is connected to the backrest support 10 at a first connection point 25 and to a seat link 9 at a second connection point 27.
  • the drive belt 23 is guided on the backrest carrier 10 via a first rolling shoulder 30 and on the seat link 9 via a second rolling shoulder 32.
  • the first rolling shoulder 30 is formed over an outer contour of the backrest carrier 10.
  • the second rolling shoulder 32 is formed by the contour of a top surface 34.
  • the first rolling shoulder 30 is arranged in the direction of the seat link 9 in front of and in the direction of the seat surface 3 above the first pivot bearing 11. This results, starting from the illustrated rest position of the office chair 1 with a tilting of the backrest support 10 and the backrest 5 back from the beginning an offset of the drive belt 23 in the direction of the backrest support 10.
  • the first attachment point 25 moves in Fig. 1 top right.
  • the second attachment point 27, which connects the drive belt 23 with the seat link 9, is arranged with respect to the direction on the backrest carrier 10 behind and in the direction of the seat surface 3 above the second pivot bearing 18.
  • the seat 3 moves in a tilting movement of the backrest carrier 10 to the rear in the Auf Vietnamese 13 in a clockwise upward pivotal movement.
  • the inclination of the backrest 5 is thus opposed to the weight of a seated person.
  • potential energy must be expended as the center of gravity of the seated person increases.
  • the shown arrangement of the seat link 9 leads to a height offset of the seat surface 3 decreasing per degree of angle. This effect is achieved by changing the drive ratio between the backrest carrier 10 and the seat link
  • the first Abrollschulter 30 along the direction of the seat link 9 towards an increasing distance from the first pivot bearing 11.
  • the second Abrollschulter 32 has along the direction of the backrest support 10 at an increasing distance 10 to the second pivot bearing 18.
  • the overall effect is that a person seated on the office chair 1 experiences an approximately equal counterpressure independently of the inclination position of the backrest 5.
  • compensation for the inclination movement of the backrest 5 is possible in such a way that the weight force of the seated person additionally acting on the backrest 5 when there is a strong inclination is taken into account.
  • the counterpressure automatically adapts to the body weight of the seated person via the synchronizing mechanism.
  • Backrest carrier first pivot bearing

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)

Abstract

La présente invention concerne une chaise, notamment une chaise de bureau (1) comprenant un dossier (5) qui est articulé sur un bâti de support (8) par l'intermédiaire d'un support de dossier (10), ainsi qu'une surface d'assise (3) qui peut se déplacer de façon synchrone par rapport au dossier et qui est reliée de manière à pouvoir pivoter sur le bâti de support (8) en un point d'application (13) par l'intermédiaire d'un bras articulé (9). Le support de dossier (10) et le bras articulé (9) sont respectivement fixés sur le bâti de support (8) de manière à pouvoir tourner. Une courroie d'entraînement (23) relie de façon mobile le bras articulé (9) au support de dossier (10) de manière qu'un mouvement de basculement du dossier (5) vers l'arrière soit transformé au point d'application (13) en un mouvement de pivotement vers le haut de la surface d'assise (3). Cette construction offre un mécanisme gravitationnel automatique qui permet de maintenir la force antagoniste exercée par le dossier (5) de manière sensiblement indépendante de l'inclinaison absolue.
PCT/EP2008/000287 2007-01-31 2008-01-16 Chaise, notamment chaise de bureau WO2008092562A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200720001395 DE202007001395U1 (de) 2007-01-31 2007-01-31 Stuhl, insbesondere Bürostuhl
DE202007001395.7 2007-01-31

Publications (1)

Publication Number Publication Date
WO2008092562A1 true WO2008092562A1 (fr) 2008-08-07

Family

ID=39473365

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/000287 WO2008092562A1 (fr) 2007-01-31 2008-01-16 Chaise, notamment chaise de bureau

Country Status (2)

Country Link
DE (1) DE202007001395U1 (fr)
WO (1) WO2008092562A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013051951A1 (fr) * 2011-10-04 2013-04-11 Formway Furniture Limited Chaise et supports
US10575648B2 (en) 2015-04-13 2020-03-03 Steelcase Inc. Seating arrangement
US11096497B2 (en) 2015-04-13 2021-08-24 Steelcase Inc. Seating arrangement
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2375938B2 (fr) † 2009-02-25 2020-01-08 Donati S.p.A. Dispositif pour synchroniser l'inclinaison d'un dossier de siège et d'un siège
DE102009021193A1 (de) 2009-05-13 2010-11-25 Bock 1 Gmbh & Co. Kg Synchronmechanik
DE102011001811A1 (de) * 2011-04-05 2012-10-11 Wilkhahn Wilkening + Hahne Gmbh + Co. Kg Stuhl
DE102013003083A1 (de) 2013-02-23 2014-08-28 Klöber GmbH Synchronmechanik für Bürostühle mit an den Benutzerschwerpunkt gekoppelter autoadaptiver Rückstellkraft
DE102013208178B4 (de) 2013-05-03 2015-04-02 Phoenix Design Gmbh + Co. Kg Stuhl mit Sitzmechanik
EP2886015B1 (fr) 2013-12-17 2016-07-13 Donati S.p.A. Chaise avec dossier ajustable
CN108992256B (zh) * 2018-08-24 2019-09-27 南方医科大学南方医院 透析患者用称重轮椅

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1256294A2 (fr) * 2001-05-11 2002-11-13 ITO Design und Marketing Armin Sander Chaise, notamment chaise de bureau
DE202005017321U1 (de) * 2005-07-27 2006-12-14 Sander, Armin Stuhl, insbesondere Bürostuhl

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4219599C2 (de) 1992-06-16 2002-08-01 Drabert Gmbh Synchronverstelleinrichtung für Bürostühle oder dergleichen
US6709058B1 (en) 1999-04-09 2004-03-23 Humanscale Corp. Ergonomic chair
DE10122948C1 (de) 2001-05-11 2003-03-13 Armin Sander Stuhl, insbesondere Bürostuhl

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1256294A2 (fr) * 2001-05-11 2002-11-13 ITO Design und Marketing Armin Sander Chaise, notamment chaise de bureau
DE202005017321U1 (de) * 2005-07-27 2006-12-14 Sander, Armin Stuhl, insbesondere Bürostuhl

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013051951A1 (fr) * 2011-10-04 2013-04-11 Formway Furniture Limited Chaise et supports
CN104023592A (zh) * 2011-10-04 2014-09-03 佛姆维家具有限公司 座椅和支撑件
US9687077B2 (en) 2011-10-04 2017-06-27 Formway Furniture Limited Chair and supports
US9901176B2 (en) 2011-10-04 2018-02-27 Formway Furniture Limited Chair and supports
US11324325B2 (en) 2015-04-13 2022-05-10 Steelcase Inc. Seating arrangement
US11096497B2 (en) 2015-04-13 2021-08-24 Steelcase Inc. Seating arrangement
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US10575648B2 (en) 2015-04-13 2020-03-03 Steelcase Inc. Seating arrangement
US11553797B2 (en) 2015-04-13 2023-01-17 Steelcase Inc. Seating arrangement
US11963621B2 (en) 2015-04-13 2024-04-23 Steelcase Inc. Seating arrangement
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
DE202007001395U1 (de) 2008-06-05

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