WO2007012391A1 - Siege, notamment siege de bureau - Google Patents

Siege, notamment siege de bureau Download PDF

Info

Publication number
WO2007012391A1
WO2007012391A1 PCT/EP2006/006650 EP2006006650W WO2007012391A1 WO 2007012391 A1 WO2007012391 A1 WO 2007012391A1 EP 2006006650 W EP2006006650 W EP 2006006650W WO 2007012391 A1 WO2007012391 A1 WO 2007012391A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat
backrest
chair according
seat surface
support
Prior art date
Application number
PCT/EP2006/006650
Other languages
German (de)
English (en)
Inventor
Armin Sander
Christopher Schmidt
Martin Potrykus
Original Assignee
Dauphin Entwicklungs- Und Beteiligungs 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 Dauphin Entwicklungs- Und Beteiligungs Gmbh filed Critical Dauphin Entwicklungs- Und Beteiligungs Gmbh
Priority to EP06776147A priority Critical patent/EP1909615A1/fr
Publication of WO2007012391A1 publication Critical patent/WO2007012391A1/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
    • A47C1/03261—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
    • 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 provided 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.
  • a floor chair can be removed, the seat surface of which inclines with a deflection of the backrest to the rear towards the backrest.
  • 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.
  • US Pat. No. 6,709,058 B1 discloses an office chair in which the force of the backrest counteracting an inclination mechanically adapts to the weight of a seated person.
  • the backrest support is bent over a pivot point on the support frame out up under the seat. By this bend in combination with the fulcrum, a rearward tilting movement of the backrest on the backrest support is converted into an upward movement of the seat. Since the point of contact of the backrest support acting on the seat surface makes a rotational movement, the force which opposes the seated person from the backrest is dependent on the absolute inclination position of the backrest support. It is an object of the invention to provide a chair of the type mentioned, which has an alternative mechanism for automatically adjusting the counteracting of the backrest of a force on the weight of the 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 Auf Vietnamese via 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 the back support and the seat spaced from each other via a single intermediate coupling member are coupled to each other such that a rearward tilting movement of the backrest is translated into 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 opposing force of the backrest acting against the o person depends on their inclination.
  • the invention proceeds from the consideration of overcoming this disadvantage, the seat with the backrest carrier spaced from each other via an interconnected individual coupling member to connect movable.
  • the rotational movement of the backrest and thus of the backrest support is transmitted via the coupling member to a movement of the seat.
  • the coupling via the coupling link offers additional mechanical degrees of freedom which allow the inclination of the backrest to be approximately converted into a uniform upward movement of the seat surface.
  • the basic principle is based on that an intermediate coupling member can 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. In this way it becomes possible to move from the backrest to a seated one Person held counterforce regardless of their absolute inclination to hold approximately equal.
  • the coupling member is formed by a pull rod which connects the seat with the backrest support movable.
  • the coupling of the backrest support to the seat surface via a pull rod provides additional mechanical degrees of freedom, which allow the desired movement of the seat.
  • Such mechanical degrees of freedom are the length of the pull rod on the seat surface or the location of the attachment points of the pull rod on the backrest support and on the seat surface.
  • the rotation caused parallel to the pull rod per rotation angle is dependent on the absolute rotational position.
  • the described coupling between seat and backrest support with a pull rod can thus be used to compensate for the described undesired dependence of the generated per angle difference of the backrest stroke of the seat surface of the absolute inclination angle of the backrest.
  • the backrest support is rotatably mounted on the bogie via a pivot bearing and has a pivot bearing, in which the pull rod is rotatably mounted, which is arranged in the direction of the seat link before and in the direction of the seat over the pivot bearing, on which the backrest support is attached.
  • the angular position between the tie rod and the tangent of the rotational movement of the backrest support is set in the starting or resting state of the chair in the attachment point.
  • the specified position ensures that a deflection of the backrest is converted from its rest position from the beginning in an offset of the pull rod.
  • variation is influenced whether a deflection of the backrest leads to a large or a small offset of the drawbar.
  • an angled pivot arm which receives the pivot bearing in which the pull rod is rotatably mounted, a material-saving and simple design can be achieved.
  • a lever arm is arranged for the movable coupling of the backrest support with the seat on the backrest support, which couples via the coupling member to the seat surface. Also, such a lever arm formed by the backrest support itself or attached separately to the backrest support
  • 5 may be further element in terms of coupling additional mechanical degrees of freedom, which allow depending on the deflection of the backrest or the backrest support the desired upward movement of the seat.
  • mechanical degrees of freedom are, for example, the length of the lever arm, the design of the coupling member, the coupling of the coupling member to the seating surface or the arrangement of the bearing required for the lever arm.
  • lever arm of the backrest support may for example have an angled portion which is mounted in a pivot bearing on the support frame. The beyond the pivot bearing part of the backrest support can then be used as such a 5 ger lever arm.
  • the lever arm may be formed by a cranked rod connected to the backrest support, which rotates with the backrest support in a rotary bearing on the support frame.
  • the lever arm is then formed by the select- cranked part of the rod.
  • the lever arm for coupling to the seat of 5 abuts the bottom of this.
  • the weight force of the seat and the weight of a seated person acts down against the upward lever arm.
  • no or only a simple mechanical design can be used, which holds the coupled parts by form, friction or adhesion aneinan- o.
  • the coupling member can be loosely guided from below against the seat.
  • the coupling member is advantageously formed as a seat surface side arranged on the lever arm roller. This is a simple and inexpensive solution that provides enough freedom for coupling.
  • the desired movement of the seat can be adjusted by the rearward tilting movement of the backrest support.
  • the link is suitably formed as a rolling track against which the role of the rolling track is supported rolling.
  • 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 and a second pivot bearing, via which the seat is connected to 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 guide element is designed as a joint element, in particular as a hinge plate, with two pivot bearings. Over the length of the joint element or over the distance between the two pivot bearing, the movement of the seat in the other Aufddling with respect to the point of storage on the seat link is adjustable.
  • the seat link and the seat guide element are each designed as a joint element, in particular as a joint plate, with two pivot bearings.
  • the seat, the two hinge elements connecting, mounted on the respective pivot bearing hanging on the support frame. If in this case an offset is transmitted to the seat surface via the pull rod, the seat surface which hangs on the support frame via the hinge elements is deflected as a whole. In this case, the seat leads due to their swinging suspension with increasing inclination of the backrest a stronger upward movement.
  • the lower pivot bearing both hinge elements are offset relative to the upper pivot bearing in the direction of the backrest in the resting state of the chair. This ensures that starting from the idle state a backward tilting movement of the backrest is transmitted from the beginning in an upward pivotal movement of the seat. This is favorable for the realization of the desired automatic weight.
  • the deflection of the seat by means of an offset of the drawbar in addition to an upward movement in addition to a tilting movement of the seat.
  • the distance of the pivot bearing of the hinge element of the seat guide element is shorter than the distance of the pivot bearing of the hinge element of the seat link.
  • the synchronization mechanism is arranged in each case mirror-symmetrical in each case to both sides of the seat. It is particularly expedient to form the joint elements as flat hinge plates.
  • the armrests and the backrest are designed as pluggable in the backrest support.
  • the armrests and the backrest can then be removed as a whole from the backrest support and stacked up to the remaining elements.
  • a removable chair column thus a compact collapsible chair is created, which includes a synchronization mechanism with additional automatic weight.
  • FIG. 1 is a schematic side view of an office chair with weight mechanism in rest position, wherein the seat is mounted on a seat link hanging on the support frame,
  • FIG. 2 is a side view schematically the office chair of FIG. 1 in a deflected position
  • FIG. 3 is a perspective view of a partial view of an office chair, wherein the seat is coupled via arranged on a cranked rod rollers with the backrest support and
  • Fig. 4 is a perspective view of a partial view of an office chair, wherein the seat is coupled via arranged on an angled lever arm rollers with the backrest support.
  • an office chair 2 is shown schematically in a side view.
  • the office chair 2 has a seat 3 and a backrest 5 and is supported by a chair column 7 by a - not shown - pedestal.
  • the office chair 2 further has armrests 33, which form a functional unit with the backrest 5. Armrests 33, backrest 5 and seat 3 are supported centrally by a support frame 35 which rests on the chair column 7.
  • the backrest 5 carrying the backrest carrier 37, to which at the same time the armrests 33 are attached pluggable, is rotatably mounted on the support frame 35 via a pivot bearing 38.
  • the seat 3 is suspended from a seat link 15 and a seat guide member 10 fixed to the support frame 35.
  • the seat link 15 and the seat guide element 10 are each formed as hinge elements 40 and 41, respectively.
  • the joint elements 40 and 41 are rotatably mounted on the carrier frame 35 via the upper, first pivot bearings 43 and 44, respectively.
  • the seat surface 3 is rotatably connected via the lower, second pivot bearings 45 and 46 with the two joint elements 40 and 41, respectively.
  • the hinge elements 40 and 41 are coupled to each other via the seat surface 3 by means of the lower pivot bearings 45 and 46.
  • an angled pivot arm 48 of the backrest support 37 is movably connected by means of the pivot bearing 49 with a pull rod 50 which is connected at its other end on the lower pivot bearing 45 of the joint member 40 with the seat surface 3.
  • the mechanism shown, consisting of pivot arm 48, tie rod 50 and the two hinge elements 40, 41 and the armrest 33 is mirror-symmetrical to both sides of the office chair 2 shown.
  • the support frame 35 is this symmetrically designed accordingly.
  • the seat 3 is arranged suspended therebetween.
  • the symmetrically designed pivot arms 48 engage on both sides of the chair 2, the respective racks of the support frame 35th
  • Fig. 2 For the operation of the office chair 2 is schematically shown in Fig. 2 in a side view io the office chair 2 in a deflected position.
  • the pivot bearing 38 performs a rearward tilting movement of the backrest 5 to an upward rotational movement of the pivot arm 48.
  • the tie rod 50 about the parallel to align the tension arm 50 component of the rotational movement is transmitted to the seat surface 3.
  • the lower pivot bearing 45 on which the pull rod 50 acts on the seat surface 3 on i5, performs an upward rotational movement from about 6 o'clock to 4 o'clock.
  • the hinge element 41 is deflected accordingly.
  • the orientation of the pull rod 50 is selected according to the rotational movement of the pivot arm 48 so that o the pull rod 50 is oriented rather tangentially with increasing tilt of the backrest 5 in the pivot bearing 49.
  • an equal angular offset leads to a greater offset of the pull rod 50.
  • a compensation such that regardless of the absolute inclination position of the backrest 5, a person sitting on the office chair 2 experiences an approximately equal counterforce.
  • the opposing force exerted on the seated person by the backrest 5 automatically adjusts itself to the weight of the seated person.
  • a further embodiment of a weight automatic of an office chair is shown in a perspective partial view.
  • the office chair of the backrest support 37 and two thereof on both sides of the support frame 35 guided spars can be seen, on which the backrest is arranged.
  • a part of the support frame 35 is visible, on which the seat 3 is suspended swinging.
  • the seat surface 3 is attached to both sides of the symmetrically shaped support frame 35 via two hinge elements 40 and 41 respectively.
  • the Gelenkele- elements 40 and 41 respectively via upper, first pivot bearings 43 and 44 are rotatably connected to the support frame 35 and lower, second pivot bearing 45 and 46 with the seat surface 3.
  • the seat 3 of which without Zeichneri- see the appearance of upholstery and a seat cover only a seat receptacle 3 ' can be seen, compared to a gutter 51 of the support frame 35 spaced.
  • a lever arm 52 In the area between the seat receptacle 3 ' and the intermediate web 51 protrudes a lever arm 52 forming a cranked rod 53 into it.
  • the U-shaped to form the lever arm 52 bent rod 53 is connected at its two outer ends in each case via a pivot bearing 38 with the spar ends of the backrest support 37.
  • the cranked rod 53 rotates with the backrest support 37 in the rotary bearing 38.
  • two rollers 56 rotatably mounted on the rod 53 are arranged as coupling members. Against the rollers 56 presses from above the weight of the seat 3 and the weight of a possibly sitting on it person.
  • the seat mount 3 1 is two cushions. 57 molded, which form at their recording a downwardly curved downhill runway 59.
  • Fig. 4 also shows in a perspective partial view of another embodiment of the automatic weight of the office chair.
  • the seat surface 3 in the symmetrically shaped support frame 35 is attached on both sides in each case by means of the hinge elements 40 and 41.
  • the seat 3 is thus suspended on the support frame 35 in turn rocking.
  • the seat surface 3 is at its rear end in turn spaced from a gutter 51 of the support frame 35.
  • a lever arm 52 which is rather an angled part of the guided centrally in the office chair backrest support 37.
  • the backrest support 37 is attached with its lever arm 52 forming angled portion in the pivot bearing 38 rotatably mounted on the intermediate web 51 of the support frame 35.
  • a support element 60 is provided.
  • rotatable rollers 56 are arranged on both sides of the seat-side end of the lever arm 52. These rollers 56 couple from below according to FIG. 3 to a rolling track 59 of two seats 57 integrally formed on the seat seat 3 ' .
  • the resulting movement of the seat surface 3 during a tilting movement of the backrest or backrest support 37 corresponds to that of the office chair shown in FIG. LIST OF REFERENCE NUMBERS

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)

Abstract

L'invention concerne un siège, notamment un siège de bureau (2), comportant un dossier (5) sur un bâti de support (35), par l'intermédiaire d'un support de dossier (37), ainsi qu'une surface d'assise (3) déplaçable de manière synchrone par rapport audit dossier, qui est reliée au bâti de support (35), de manière à pivoter en un point de levage (15), par l'intermédiaire d'un bras oscillant de siège (15). A cet effet, le support de dossier (37) et le bras oscillant de siège (15) sont fixés, dans chaque cas, de manière rotative sur le bâti de support (35). Le support de dossier (37) et la surface d'assise (3) sont accouplés de manière mobile mutuelle, à distance l'un de l'autre, par l'intermédiaire d'un seul élément d'accouplement intercalé, de sorte qu'un mouvement de pivotement du dossier (5), dirigé vers l'arrière, soit converti, au niveau du point de levage (15) en un mouvement pivotant ascendant de la surface d'assise (3). Ce type de construction permet d'obtenir un équilibrage pondéral automatique, qui permet de maintenir la force antagoniste exercée par le dossier (5) sensiblement indépendante de l'inclinaison absolue.
PCT/EP2006/006650 2005-07-27 2006-07-07 Siege, notamment siege de bureau WO2007012391A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06776147A EP1909615A1 (fr) 2005-07-27 2006-07-07 Siege, notamment siege de bureau

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE202005011724 2005-07-27
DE202005011724.2 2005-07-27
DE202005017321.5 2005-11-05
DE202005017321U DE202005017321U1 (de) 2005-07-27 2005-11-05 Stuhl, insbesondere Bürostuhl

Publications (1)

Publication Number Publication Date
WO2007012391A1 true WO2007012391A1 (fr) 2007-02-01

Family

ID=37064700

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/006650 WO2007012391A1 (fr) 2005-07-27 2006-07-07 Siege, notamment siege de bureau

Country Status (4)

Country Link
EP (1) EP1909615A1 (fr)
DE (1) DE202005017321U1 (fr)
TW (1) TW200727823A (fr)
WO (1) WO2007012391A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018103213U1 (de) * 2018-06-08 2019-09-11 Armin Sander Sitzmöbel

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007001395U1 (de) * 2007-01-31 2008-06-05 Sander, Armin Stuhl, insbesondere Bürostuhl
DE102014003676A1 (de) 2014-03-14 2015-09-17 Bock 1 Gmbh & Co. Kg Stuhl, insbesondere Bürostuhl
DE102014006058B4 (de) 2014-04-26 2017-03-23 Grupo Forma 5, S.L.U. Bürostuhl mit Synchronmechanik
DE102015216058A1 (de) 2015-08-21 2017-02-23 Armin Sander Bürostuhl

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1204785A (en) * 1915-05-29 1916-11-14 Grand Rapids Trust Company Reclining-chair.
US5573303A (en) * 1995-05-16 1996-11-12 Doerner Products Ltd. Chair seat tilting mechanism

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3619312C1 (de) * 1986-06-07 1988-01-14 Kusch Co Sitzmoebel Wippmechanik fuer Sitzmoebel
US5979984A (en) * 1997-10-24 1999-11-09 Steelcase Development Inc. Synchrotilt chair with forwardly movable seat
US7048335B2 (en) * 2003-06-05 2006-05-23 Steelcase Development Corporation Seating unit with crossbar seat support
ES1057119Y (es) * 2004-03-24 2004-10-01 Metalseat Srl Estructura de sillon de oficina regulable con articulacion para el movimiento sincronico del asiento y del respaldo.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1204785A (en) * 1915-05-29 1916-11-14 Grand Rapids Trust Company Reclining-chair.
US5573303A (en) * 1995-05-16 1996-11-12 Doerner Products Ltd. Chair seat tilting mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018103213U1 (de) * 2018-06-08 2019-09-11 Armin Sander Sitzmöbel

Also Published As

Publication number Publication date
TW200727823A (en) 2007-08-01
DE202005017321U1 (de) 2006-12-14
EP1909615A1 (fr) 2008-04-16

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