EP0343450A1 - Chaise, notamment chaise de travail ou de bureau - Google Patents
Chaise, notamment chaise de travail ou de bureau Download PDFInfo
- Publication number
- EP0343450A1 EP0343450A1 EP89108563A EP89108563A EP0343450A1 EP 0343450 A1 EP0343450 A1 EP 0343450A1 EP 89108563 A EP89108563 A EP 89108563A EP 89108563 A EP89108563 A EP 89108563A EP 0343450 A1 EP0343450 A1 EP 0343450A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seat
- backrest
- chair
- inclination
- chair according
- 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
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/02—Rocking chairs
- A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
- A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting 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
Definitions
- the invention relates to a chair, in particular a work or office chair, with a seat which can be pivoted in the front region about a horizontal pivot axis and whose inclination can be changed and, depending on the change in inclination of the seat, by means of an adjusting device, the inclination of the backrest which can be changed disproportionately, in which with increasing inclination of the seat, the backrest executes an additional relative movement downward relative to the facing end of the seat.
- the known chairs of this type offer excellent seating comfort, since on the one hand they provide a clear support for the back of the user in the starting or working position thanks to the practically vertical position of the backrest, but on the other hand they allow relaxed sitting after the backrest is tilted backwards.
- the backrest When the backrest is tilted backwards, the user's upper body does not simply make a swiveling movement, but rather a movement superimposed from various movement components results. Since the backrest performs an additional downward movement towards the seat when tilting backwards, a relative movement between the back of the user and the backrest is avoided or at least reduced to an undetectable value.
- the chair can be designed as a synchronous chair, in which a downward inclination of the seat support carrying the seat inevitably brings about a backward inclination of the backrest bar with a larger angle of inclination.
- the seat support with the seat can also be guided to be extendable on the bearing block.
- multi-link lever chains are used, as shown in EP 0 176 816 A1, or, on the other hand, pairs of transmission levers and drive arches as shown in EP 0 085 870 A1.
- many parts are required for the adjustment device.
- the same also applies to a chair according to DE 29 16 897 A1, in which, when the seat is pulled out, the backrest on the backrest bar is displaced in the direction of the seat.
- pivot levers are articulated on both sides of the seat on support arms of the chair frame, the free ends of which are fixedly and non-rotatably attached to the backrest and carry the backrest and that the seat is approximately in its central region on the pivot levers rotatably supported and articulated in the front area on at least one drive lever on the chair frame.
- the swivel levers and the entraining lever (s) are connected to the chair frame or to one another by means of conventional swivel or swivel bearings, so that the adjusting device can be designed to be absolutely reliable. There is no direct connection between the seat and the backrest via the adjustment device.
- the swivel levers carry the backrest and forcibly adjust it. The disproportionate change in the inclination of the backrest when the seat is lowered can be determined by the choice of the distance of the axes of rotation of the seat from the articulation axes of the pivot levers.
- the lower end of the backrest is connected to the rear region of the seat via a length compensation member in order to achieve a shapely transition between the backrest and the seat.
- the swivel levers are designed as armrests or armrests and thus take on a further function.
- the shapely transition from the seat to the backrest is further improved in that the seat has an upward extension at the rear end, the is preferably positively connected to the lower end of the backrest via the length compensation member.
- the length compensation member is formed from two telescopic parts, then the two parts are connected to the seat and the backrest and covered by means of a bellows.
- the length compensation element does not have to perform a load-bearing function, it only covers the changing distance between the rear area of the seat and the lower end of the backrest.
- the elastically designed length compensation member can, however, itself also be designed as a bellows.
- the rotary bearing of the seat on the pivot levers is solved according to one embodiment so that the pivot levers between the articulation axis on the support arms and the fixed connection point on the backrest carry downwardly projecting mounting brackets on which the seat is rotatably mounted.
- the seat can also have mounting brackets for the mounting bolts or even carry the mounting bolts.
- one embodiment provides that the swivel levers are angled downward in the region of the articulation axis and run approximately parallel to the bearing brackets for the seat.
- the seat When lowering the seat, the seat is shifted in the direction of the backrest if the design is such that the articulation axis of the pivot lever is arranged below the horizontal pivot axis of the front region of the seat, and that the axis of rotation of the entraining lever or arms on the support arms is the front End of the seat facing the pivot axis of the pivot lever is arranged.
- Fig. 1 shows schematically how the seat 20 and the backrest 25 are connected to the adjusting device and which parts the adjusting device comprises.
- the column 10 of the chair frame merges into support arms 11 directed towards the front of the chair.
- pivot levers 13 are articulated on both sides of the seat, as the articulation axis 12 shows.
- the seat 20 is rotatably supported with a central area on bearing tabs 14 of the pivot lever 13.
- the seat 20 can have bearing brackets 23 which receive the bearing bolts for the axis of rotation 15.
- the free ends of the pivot levers 13 are connected to the backrest 25 as a fixed, non-rotatable connection point 16.
- the front region of the seat 20 carries bearing brackets 22 for the horizontal pivot axis 19.
- the carrying levers 17 are preferably pivotally mounted on the bearing brackets 22 on both sides of the seat 20, and are supported in an articulated manner on the support arms 11 via the axes of rotation 18.
- the axes of rotation 18 of the entraining lever 17 face the front end of the seat 20 and the pivot axis 13 of the pivot lever 13.
- the rear end of the seat 20 goes into the upward extension 21, which is connected to the lower end of the backrest 25 via the length compensation member 24.
- This length compensation member 24 has no load-bearing function, it merely covers the changing distance between the extension 21 of the seat 20 and the lower end of the backrest 25 in an elegant manner.
- the pivot levers 13 are also adjusted in the direction 27.
- the swivel angle of the swivel levers 13 is increased due to the distance between the axes of rotation 15 and the articulation axes 12.
- the entraining levers 17 perform a swiveling movement in the same direction, so that the seat 20, in addition to a lowering in the front region, also a displacement in the direction of the backrest 25 experiences.
- the backrest 25 executes the inclination movement 28, which is greater than the inclination movement of the seat 20. Since the connection point 16 is rigid, the backrest 25 is forcibly adjusted in the direction 29.
- the length compensation member 24 allows this movement.
- the length compensation member 24 takes on the adaptation of the changing distance between the lower end of the backrest 25 and the extension 21 of the seat 20th
- Fig. 2 shows an embodiment of a chair on an enlarged scale.
- a swivel lever 13 and an entraining lever 17 are arranged on both sides of the seat 20.
- Two support arms 11 extend from the column of the chair frame, not shown, which extend to the front region of the seat 20.
- the seat 20 can consist of a seat support and seat cushion be composed.
- the pivot levers 13 initially go upward from the articulation axis 12 with an angled section and then extend inclinedly into the lower region of the backrest 25, which can also be composed of a backrest support and a backrest cushion.
- the ends of the pivot levers 13 are fixed and non-rotatably connected to the backrest 25, as the connection point 16 shows.
- downward-facing bearing brackets 14 are attached in the front area and run approximately parallel to the angled end sections of the swivel levers 13.
- About the middle region of the seat 20 is rotatably mounted on the bearing tabs 14, as the axis of rotation 15 shows.
- further mounting brackets are attached, on which the entraining levers 17 are pivotally mounted about the horizontal pivot axis 19.
- the driving levers 17 are articulated on the support arms 11 via the axes of rotation 18. In the starting position, the pivot axis 19 of the driving lever 17 and thus the horizontal pivot axis of the seat 20 lie above the pivot axis 12 of the pivot lever 13.
- the axes of rotation 18 of the pivot lever 17 face the front end of the seat 20 in front of the pivot axis 12 of the pivot lever 13. With the distance of the axes of rotation 15 from the articulation axes 12 is the measure of the increase in the angle of inclination of the backrest 25 when the seat 20 is lowered.
- the swivel levers 13 are also adjusted in the same swivel direction via the mounting brackets 14, the swivel angle of the swivel lever 13 being correspondingly greater than the swivel angle of the seat 20.
- the driving levers 17 are also pivoted in the direction of the backrest 25.
- the backrest 25 can be adjusted up to a 25 'marked end position, the seat 20 assuming the end position shown in broken lines in FIG. 3. The lowering of the front area of the seat 20 can be clearly seen.
- the pivot levers 13 are preferably designed as armrests or armrests and can be padded.
- the shape above the seat 20 can be designed freely if the rotary bearing of the seat 20 and the fixed attachment of the backrest 25 to the pivot levers 13 and the pivot bearing of the pivot lever 13 on the support arms 11 of the chair frame are maintained.
- the dimensioning of the driving lever 17 and its articulation on the seat 20 and the support arms 11 depends on the amount of the desired lowering of the front region of the seat 20 and the amount of the desired displacement of the seat 20 in the direction of the backrest 25.
- the arrangement of the adjusting device comprising the pivoting lever 13 and the carrying lever 17 is identical on both sides of the seat 20.
- the backrest 25 When the seat 20 is lowered, the backrest 25 is simultaneously also adjusted downwards via the pivoting lever 13, the distance between the lower end of the backrest 25 and the rear end of the seat 20 becoming smaller.
- This change in distance compensates for the length compensation member 24, which can be constructed in various ways.
- Two telescopic parts, which on the backrest 25 and the Seat 20 attached and covered by a bellows can take over the compensation.
- the same purpose is fulfilled by an elastic part which is designed in the manner of a bellows and is connected to the seat 20 and the backrest 25. A shapely transition can be achieved between the seat 20 and the backrest 25.
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)
- Plural Heterocyclic Compounds (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89108563T ATE75114T1 (de) | 1988-05-26 | 1989-05-12 | Stuhl, insbesondere arbeits- oder buerostuhl. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3817761 | 1988-05-26 | ||
DE3817761A DE3817761A1 (de) | 1988-05-19 | 1988-05-26 | Stuhl, insbesondere arbeits- oder buerostuhl |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0343450A1 true EP0343450A1 (fr) | 1989-11-29 |
EP0343450B1 EP0343450B1 (fr) | 1992-04-22 |
Family
ID=6355087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89108563A Expired - Lifetime EP0343450B1 (fr) | 1988-05-26 | 1989-05-12 | Chaise, notamment chaise de travail ou de bureau |
Country Status (7)
Country | Link |
---|---|
US (1) | US5071189A (fr) |
EP (1) | EP0343450B1 (fr) |
JP (1) | JPH02191410A (fr) |
AT (1) | ATE75114T1 (fr) |
CA (1) | CA1320676C (fr) |
DE (2) | DE3817761A1 (fr) |
ES (1) | ES2032626T3 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2100539A1 (fr) * | 2008-03-10 | 2009-09-16 | Savo AS | Dispositif de dossier |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69333862T2 (de) † | 1992-06-15 | 2006-01-12 | Herman Miller, Inc., Zeeland | Ein unbedecktes Gewebe für Sitze und Verfahren zur Herstellung eines Stuhles mit solchem Gewebe |
IL103477A0 (en) * | 1992-10-20 | 1993-03-15 | Paltechnica Nitzanim | Office and like chairs |
DE29612594U1 (de) * | 1996-07-20 | 1996-09-19 | Franck Klaus Reiner | Vorrichtung zur Synchronanpassung von Sitz- und Rückenlehne eines Stuhles an die Körperhaltung eines Benutzers |
DE10026475A1 (de) * | 2000-05-27 | 2001-12-06 | Haworth Bueroeinrichtung Gmbh | Stuhl |
IT1315528B1 (it) * | 2000-10-18 | 2003-02-18 | Enrico Cioncada | Poltrona ad assetto variabile |
US6644741B2 (en) | 2001-09-20 | 2003-11-11 | Haworth, Inc. | Chair |
US20030132653A1 (en) * | 2001-10-18 | 2003-07-17 | Doug Thole | Tension control mechanism for a chair |
US6945602B2 (en) * | 2003-12-18 | 2005-09-20 | Haworth, Inc. | Tilt control mechanism for chair |
US20070090671A1 (en) * | 2005-10-06 | 2007-04-26 | Rbm A/S; | Weight regulator for a chair |
US9777111B2 (en) * | 2005-10-20 | 2017-10-03 | Grupo Petrotemex, S.A. De C.V. | PET polymer with improved properties |
US7806478B1 (en) * | 2006-01-04 | 2010-10-05 | Sava Cvek | Task chair with dual tilting capabilities |
US7922248B2 (en) | 2007-01-29 | 2011-04-12 | Herman Miller, Inc. | Seating structure and methods for the use thereof |
DE202009014380U1 (de) * | 2009-10-23 | 2010-04-01 | GLÖCKL, Josef | Stehsitz |
US20110304192A1 (en) * | 2010-06-15 | 2011-12-15 | Augustat Betty A | Ergometric Chair Apparatus |
US11304528B2 (en) | 2012-09-20 | 2022-04-19 | Steelcase Inc. | Chair assembly with upholstery covering |
US9706845B2 (en) | 2012-09-20 | 2017-07-18 | Steelcase Inc. | Chair assembly |
USD697726S1 (en) | 2012-09-20 | 2014-01-21 | Steelcase Inc. | Chair |
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 |
US11259637B2 (en) | 2015-04-13 | 2022-03-01 | Steelcase Inc. | Seating arrangement |
JP6826043B2 (ja) | 2015-04-13 | 2021-02-03 | スティールケース インコーポレイテッド | 着座用構成体 |
US10194750B2 (en) | 2015-04-13 | 2019-02-05 | Steelcase Inc. | Seating arrangement |
EP4268676A3 (fr) | 2019-02-21 | 2024-02-07 | Steelcase Inc. | Ensemble de support corporel et procédés d'utilisation et d'assemblage associés |
WO2020255195A1 (fr) * | 2019-06-17 | 2020-12-24 | 株式会社クオリ | Chaise inclinable |
US11357329B2 (en) | 2019-12-13 | 2022-06-14 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0063860A2 (fr) * | 1981-04-29 | 1982-11-03 | Hauserman Inc. | Chaise |
DE3322450A1 (de) * | 1983-06-22 | 1985-01-10 | August Fröscher GmbH & Co KG, 7141 Steinheim | Vorrichtung zum verstellen des sitzes und der rueckenlehne von stuehlen |
EP0179357A2 (fr) * | 1984-10-23 | 1986-04-30 | Protoned B.V. | Chaise |
DE8616836U1 (fr) * | 1986-06-24 | 1987-10-22 | Hartmann, Guenter, 5800 Hagen, De |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2433521A (en) * | 1945-03-01 | 1947-12-30 | Lorenz Anton | Reclining article of furniture |
ATE12168T1 (de) * | 1981-08-19 | 1985-04-15 | Giroflex Entwicklungs Ag | Stuhl. |
DE3232771A1 (de) * | 1982-09-03 | 1984-03-08 | Wilkhahn Wilkening + Hahne GmbH + Co, 3252 Bad Münder | Arbeits-sitzmoebel |
US4560199A (en) * | 1983-07-22 | 1985-12-24 | Pamont Ag | Recliner chair |
DE8326792U1 (de) * | 1983-09-17 | 1984-01-05 | Fromme, Heinrich, 4815 Schloß Holte-Stukenbrock | Stuhl, insbesondere drehstuhl |
DE3608718A1 (de) * | 1986-03-15 | 1987-09-17 | Drabert Soehne | Sitzmoebel |
DE3617623A1 (de) * | 1986-05-26 | 1987-12-03 | Drabert Soehne | Stuhl |
DE3632131C2 (de) * | 1986-06-04 | 2001-12-13 | Hartmut S Engel | Funktions-Sitzmöbel |
DE3622272A1 (de) * | 1986-07-03 | 1988-01-21 | Porsche Ag | Stuhl, insbesondere buerostuhl |
DE3630503A1 (de) * | 1986-09-08 | 1988-03-10 | Girsberger Holding Ag | Stuhl |
DE8627482U1 (fr) * | 1986-10-15 | 1989-07-06 | Voelkle, Rolf, 7298 Lossburg, De | |
DE3642796A1 (de) * | 1986-12-15 | 1988-06-23 | Eckhard Hansen | Punktsynchronverstelleinrichtung fuer buerostuehle, sitzmoebel o. dgl. |
DE3737491C2 (de) * | 1987-11-05 | 2003-03-20 | Wilkhahn Wilkening & Hahne | Stuhl |
-
1988
- 1988-05-26 DE DE3817761A patent/DE3817761A1/de active Granted
-
1989
- 1989-05-12 AT AT89108563T patent/ATE75114T1/de not_active IP Right Cessation
- 1989-05-12 EP EP89108563A patent/EP0343450B1/fr not_active Expired - Lifetime
- 1989-05-12 ES ES198989108563T patent/ES2032626T3/es not_active Expired - Lifetime
- 1989-05-12 DE DE8989108563T patent/DE58901223D1/de not_active Expired - Fee Related
- 1989-05-25 CA CA000600701A patent/CA1320676C/fr not_active Expired - Fee Related
- 1989-05-25 JP JP1130307A patent/JPH02191410A/ja active Pending
-
1990
- 1990-10-31 US US07/606,873 patent/US5071189A/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0063860A2 (fr) * | 1981-04-29 | 1982-11-03 | Hauserman Inc. | Chaise |
DE3322450A1 (de) * | 1983-06-22 | 1985-01-10 | August Fröscher GmbH & Co KG, 7141 Steinheim | Vorrichtung zum verstellen des sitzes und der rueckenlehne von stuehlen |
EP0179357A2 (fr) * | 1984-10-23 | 1986-04-30 | Protoned B.V. | Chaise |
DE8616836U1 (fr) * | 1986-06-24 | 1987-10-22 | Hartmann, Guenter, 5800 Hagen, De |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2100539A1 (fr) * | 2008-03-10 | 2009-09-16 | Savo AS | Dispositif de dossier |
Also Published As
Publication number | Publication date |
---|---|
EP0343450B1 (fr) | 1992-04-22 |
ATE75114T1 (de) | 1992-05-15 |
DE3817761C2 (fr) | 1990-05-10 |
ES2032626T3 (es) | 1993-02-16 |
CA1320676C (fr) | 1993-07-27 |
DE3817761A1 (de) | 1989-11-30 |
US5071189A (en) | 1991-12-10 |
JPH02191410A (ja) | 1990-07-27 |
DE58901223D1 (de) | 1992-05-27 |
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