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EP0322400A2 - Cadre de chaise avec support de siège et de dossier inclinable vers l'arrière - Google Patents

Cadre de chaise avec support de siège et de dossier inclinable vers l'arrière Download PDF

Info

Publication number
EP0322400A2
EP0322400A2 EP89102231A EP89102231A EP0322400A2 EP 0322400 A2 EP0322400 A2 EP 0322400A2 EP 89102231 A EP89102231 A EP 89102231A EP 89102231 A EP89102231 A EP 89102231A EP 0322400 A2 EP0322400 A2 EP 0322400A2
Authority
EP
European Patent Office
Prior art keywords
backrest
support
chair frame
chair
seat
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
Application number
EP89102231A
Other languages
German (de)
English (en)
Other versions
EP0322400B1 (fr
EP0322400A3 (en
Inventor
Hermann Locher
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.)
Giroflex Entwicklungs AG
Original Assignee
Giroflex Entwicklungs 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 Giroflex Entwicklungs AG filed Critical Giroflex Entwicklungs AG
Priority to AT8989102231T priority Critical patent/ATE104835T1/de
Publication of EP0322400A2 publication Critical patent/EP0322400A2/fr
Publication of EP0322400A3 publication Critical patent/EP0322400A3/de
Application granted granted Critical
Publication of EP0322400B1 publication Critical patent/EP0322400B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03283—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with fluid springs
    • 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
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
    • 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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/44—Supports for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/443—Supports for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/44—Supports for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/443—Supports for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs
    • A47C7/444—Supports for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs of torsion type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/44—Supports for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/446—Supports for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with fluid springs

Definitions

  • the seat support and the backrest support are pivoted at one end to a support part at a distance from each around a horizontal axis, the seat part being connected at its other end to the backrest support by a swivel joint.
  • the backrest support tilts at a greater angle than the seat part, one of the swivel joints additionally being designed as a sliding joint or an additional connecting bracket on one of the swivel joints.
  • the greater inclination of the backrest support causes the known pull-out effect, i.e. the clothing of the chair user is pulled up when tilted backwards.
  • the automatic displacement of the backrest which takes place as a function of the backward inclination of the seat support, is achieved by means of a linkage which is articulated on the swivel joint of the backrest support and is coupled to the end of the backrest support on the support part.
  • This linkage takes up a lot of space and is because it is under the seat extends to the knee-side seat end, not only space-consuming but also costly.
  • a simplification of the linkage can be achieved if the displacement of the backrest which takes place as a function of the backward inclination of the seat carrier is carried out in accordance with the solution described in the parent application.
  • each additional linkage represents an additional effort, and it is an object of the invention to further develop chair frames of the type described in the preamble of claims 1-3 so that the chair frame offers sufficient comfort even without a sliding backrest.
  • the chair shown in Fig. 1 is supported on a support part 1, which usually represents part of a mostly mobile, only indicated foot frame 2.
  • a seat support 3 and a backrest part 4 are mounted on the support part 1, the seat support 3 having its knee-side end being pivotably mounted on the support part 1 by means of a swivel joint 5.
  • the backrest part 4 is articulated by means of a swivel joint 6 to a lever, which in turn is pivotably mounted in the support part 1 by means of a further swivel joint 8 at a distance from the swivel joint of the seat support 3.
  • the seat support 3 and the backrest part 4 are rotatably connected to one another on the backrest side by means of a swivel joint 9.
  • the lever 7 is designed as a cantilever arm 10, at the free end of which one end of a spring member 11 is supported.
  • the other end of the spring member 11 is supported on the support part 1, wherein it is articulated on the knee-side pivot joint 5 of the seat support 3 or is supported on the support part 1 in the vicinity of this pivot joint. If the backrest part 4 moves by a certain amount, this is increased at the free end of the arm 10, so that the spring travel of the spring member 11 is increased accordingly.
  • the seat support 3 projects with an extension 12 beyond the swivel joint 9 on the backrest.
  • a link chain 15 is coupled by means of a swivel joint 16, which is composed of three articulated links 17, 18, 19.
  • the link 19 is connected at its free end to a slide 20 which is guided on the backrest support 4 and carries a backrest 21, shown schematically by a broken line.
  • the seat support 3 moves around the knee-side swivel joint 5 in the direction of arrow a and the backrest support 4 around the backrest-side swivel joint 9 in the arrow direction A, the inclination of the backrest support 4 being greater than that of the seat support 3.
  • the link chain 15 is adjusted so that the slider 20 moves down with the backrest 21.
  • the middle link 18 is pivotally mounted in the backrest support 4 by means of a swivel joint 22.
  • the link 18 thus forms a two-armed lever, by means of which the inclination of the link 17 is reduced when the backrest support 4 is tilted back and thus causes the slide 20 to move downward.
  • the link 19 only serves to prevent a clamping end of the slide 20 on its guide.
  • one arm of the lever 7 connects the backrest part 4 to the support part 1.
  • the arm located between the swivel joints 6, 8 is accordingly a tab through which the backward inclination of the two supports 3, 4 is free of jamming and without formation of a Swivel joint is made possible as an additional sliding joint.
  • Fig. 1 the space-saving and simple solution of the displacement of the slide 20 with the backrest 21 can be seen.
  • the space below the seat support 3 can be used for the arrangement of other parts, the effect of the spring member 11 also being increased by using the lever 7, since this translates the movement of the backrest support 4.
  • FIGS. 2-4 show that additional spring means or rods can be used for their actuation, as will be shown below.
  • the seat support 3 mounted in the knee-side swivel joint 5 is connected on the backrest side with a bracket 25 and two swivel joints 9, 13 to the backrest support, with which the backrest support 4 can be pivotably mounted on the support part 1 by means of the swivel joint 8 without a sliding joint having to be provided.
  • the backrest support 4 here has an arm 23 projecting from the swivel joint 8, on the free end of which the spring member 11 is supported. Further spring means are attached on the backrest side, see a tension spring 26 which is fastened on the one hand to the backrest support 4 and on the other hand to the supporting part 1. If further spring means are required, it is also possible to arrange a torsion spring in the knee-side swivel joint 5 of the seat support 3 and in the swivel joint 8.
  • the spring means always have the task of moving the chair into the normal or working position when it is relieved. It is desirable to be able to actuate the spring means 11 arranged in the knee area, in particular a gas pressure spring, in order to block the chair in a certain position, for example in the backward inclined position. The actuation can be made easily accessible because of the location of the spring means.
  • one end of the spring means 11 is supported on a pair of tabs 30, 31, of which the tab 30 is supported on the backrest-side swivel 9 of the two supports 3, 4 and the tab 31 on the support part 1.
  • the spring travel of the spring means 11 can be varied.
  • a tension spring 27 is supported on the one hand on the pair of tabs 30, 31 and on the other hand on the support part 1.
  • the two supports 3, 4 are connected to one another on the backrest side by the tab 25 and are pivotably mounted on the supporting part 1 by the swivel joints 5, 8.
  • a pair of tabs 32, 33 is provided, of which the tab 32 is pivotally mounted on the pivot 9 of the seat support 3 on the backrest and the tab 33 on the pivot 8 of the back support 4 in the seat part 1.
  • the chair frames described have a relatively small volume of rod parts under the seat support.
  • the inevitable "duck belly” in other constructions due to the arrangement of voluminous and bulky rod parts under the seat support can be avoided in the present construction.

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)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Special Chairs (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Seats For Vehicles (AREA)
  • Pyridine Compounds (AREA)
  • Steroid Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
EP89102231A 1984-10-03 1985-09-09 Cadre de chaise avec support de siège et de dossier inclinable vers l'arrière Expired - Lifetime EP0322400B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT8989102231T ATE104835T1 (de) 1984-10-03 1989-02-09 Stuhlgestell mit rueckwaerts neigbarem sitz- und rueckenlehnentraeger.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH4760/84A CH666171A5 (de) 1984-10-03 1984-10-03 Stuhl mit rueckwaerts neigbarem sitz- und rueckenlehnentraeger.
CH4760/84 1984-10-03
EP85111372A EP0176816B1 (fr) 1984-10-03 1985-09-09 Chaise à siège et support de dossier inclinable vers l'arrière

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP85111372.0 Division 1985-09-09

Publications (3)

Publication Number Publication Date
EP0322400A2 true EP0322400A2 (fr) 1989-06-28
EP0322400A3 EP0322400A3 (en) 1989-07-19
EP0322400B1 EP0322400B1 (fr) 1994-04-27

Family

ID=4282037

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89102231A Expired - Lifetime EP0322400B1 (fr) 1984-10-03 1985-09-09 Cadre de chaise avec support de siège et de dossier inclinable vers l'arrière
EP85111372A Expired EP0176816B1 (fr) 1984-10-03 1985-09-09 Chaise à siège et support de dossier inclinable vers l'arrière

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP85111372A Expired EP0176816B1 (fr) 1984-10-03 1985-09-09 Chaise à siège et support de dossier inclinable vers l'arrière

Country Status (14)

Country Link
US (1) US4684173A (fr)
EP (2) EP0322400B1 (fr)
JP (1) JPS6187505A (fr)
AT (2) ATE46608T1 (fr)
AU (1) AU577143B2 (fr)
BR (1) BR8504774A (fr)
CA (1) CA1252036A (fr)
CH (1) CH666171A5 (fr)
DE (2) DE3587809D1 (fr)
DK (1) DK164630C (fr)
FI (1) FI81245C (fr)
NO (2) NO166213C (fr)
PT (1) PT81046B (fr)
ZA (1) ZA857307B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007023301A1 (fr) * 2005-08-26 2007-03-01 Hilary Rolf Birkbeck Siege a configuration variable
KR101109456B1 (ko) 2009-12-11 2012-02-29 이신근 의자 구조체
US8148748B2 (en) 2007-09-26 2012-04-03 Stmicroelectronics N.V. Adjustable field effect rectifier
US8421118B2 (en) 2007-09-26 2013-04-16 Stmicroelectronics N.V. Regenerative building block and diode bridge rectifier and methods
US8633521B2 (en) 2007-09-26 2014-01-21 Stmicroelectronics N.V. Self-bootstrapping field effect diode structures and methods
US8643055B2 (en) 2007-09-26 2014-02-04 Stmicroelectronics N.V. Series current limiter device

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US5899530A (en) * 1995-08-23 1999-05-04 Global Upholstery Company Control mechanism for a chair
US5909924A (en) * 1997-04-30 1999-06-08 Haworth, Inc. Tilt control for chair
US5918935A (en) * 1997-06-03 1999-07-06 Stulik; Edward L. Reclining chair
US5979984A (en) * 1997-10-24 1999-11-09 Steelcase Development Inc. Synchrotilt chair with forwardly movable seat
US6412869B1 (en) * 1999-05-27 2002-07-02 Steelcase Development Corporation Nestable synchrotilt chair
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CA2302063C (fr) * 2000-03-23 2010-08-17 Cke Technologies Inc. Chaise ergonomique
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US6644741B2 (en) * 2001-09-20 2003-11-11 Haworth, Inc. Chair
JP3835383B2 (ja) 2002-09-09 2006-10-18 セイコーエプソン株式会社 液体吐出装置及びコンピュータシステム
US6945602B2 (en) * 2003-12-18 2005-09-20 Haworth, Inc. Tilt control mechanism for chair
US20080067848A1 (en) * 2004-06-14 2008-03-20 Egon Brauning Chair Having A Synchronizing Mechanism
US20070102979A1 (en) * 2005-10-25 2007-05-10 GLOBAL TOTAL OFFICE an Ontario limited partnership having GLOBAL UPHOLSTERY CO. Adjustment mechanism for a chair and method for replacing a telescoping cylinder in a reconfigurable chair
CA2718583C (fr) * 2007-03-13 2014-07-08 Hni Technologies Inc. Mecanisme a six barres et commande pour chaise
US8272692B1 (en) * 2009-10-26 2012-09-25 Epperson Ronald B Office chair having tiltable seat and back
KR101533650B1 (ko) * 2010-04-15 2015-07-03 주식회사 시디즈 의자의 등받이에 작용하는 복원력을 조정하기 위한 조정 메커니즘 및 상기 조정 메커니즘을 구비한 사무용 의자
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US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering
US9458905B2 (en) * 2012-09-20 2016-10-04 Steelcase Inc. Spring assembly and method
US9801471B2 (en) 2014-04-17 2017-10-31 Hni Technologies Inc. Chair and chair control assemblies, systems, and methods
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DE202017102909U1 (de) * 2017-01-04 2018-04-05 Design Ballendat Gmbh Stuhl mit einteiliger Sitzschale
US11589678B2 (en) 2019-01-17 2023-02-28 Hni Technologies Inc. Chairs including flexible frames

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US4235408A (en) * 1978-02-27 1980-11-25 Knoll International, Inc. Swivel-chair frame
WO1983000610A1 (fr) * 1981-08-19 1983-03-03 Giroflex Entwicklungs Ag Chaise
US4471994A (en) * 1981-03-17 1984-09-18 Fa. Karl Zund & Co., AG Adjustable chair

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CH529537A (de) * 1970-09-28 1972-10-31 Stella Werke Ag Arbeitsstuhl
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US4143910A (en) * 1977-09-12 1979-03-13 Klaus Geffers Chair having synchronously coupled tiltable seat and back rest
DE2757349A1 (de) * 1977-12-22 1979-07-05 Simon Klinksiek Stuhl
DE2846360A1 (de) * 1978-10-25 1980-05-08 Drabert Soehne Sitzmoebel, insbesondere buerodrehstuhl mit neigungsverstellung
CH645795A5 (en) * 1979-07-23 1984-10-31 Drabert Soehne Chair, in particular visual display unit chair
US4479679A (en) * 1981-06-08 1984-10-30 Steelcase Inc. Body weight chair control
US4432582A (en) * 1981-12-17 1984-02-21 Wilkhahn-Wilkening & Hahne Gmbh & Company Chair with means for adjusting the inclination of the backrest
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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2321385A (en) * 1941-06-16 1943-06-08 Sikes Company Tilting chair
US4235408A (en) * 1978-02-27 1980-11-25 Knoll International, Inc. Swivel-chair frame
US4471994A (en) * 1981-03-17 1984-09-18 Fa. Karl Zund & Co., AG Adjustable chair
WO1983000610A1 (fr) * 1981-08-19 1983-03-03 Giroflex Entwicklungs Ag Chaise

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007023301A1 (fr) * 2005-08-26 2007-03-01 Hilary Rolf Birkbeck Siege a configuration variable
US8148748B2 (en) 2007-09-26 2012-04-03 Stmicroelectronics N.V. Adjustable field effect rectifier
US8421118B2 (en) 2007-09-26 2013-04-16 Stmicroelectronics N.V. Regenerative building block and diode bridge rectifier and methods
US8598620B2 (en) 2007-09-26 2013-12-03 Stmicroelectronics N.V. MOSFET with integrated field effect rectifier
US8633521B2 (en) 2007-09-26 2014-01-21 Stmicroelectronics N.V. Self-bootstrapping field effect diode structures and methods
US8643055B2 (en) 2007-09-26 2014-02-04 Stmicroelectronics N.V. Series current limiter device
US9012954B2 (en) 2007-09-26 2015-04-21 STMicroelectronics International B.V. Adjustable field effect rectifier
US9048308B2 (en) 2007-09-26 2015-06-02 Stmicroelectronics International N.V. Regenerative building block and diode bridge rectifier and methods
KR101109456B1 (ko) 2009-12-11 2012-02-29 이신근 의자 구조체

Also Published As

Publication number Publication date
US4684173A (en) 1987-08-04
EP0322400B1 (fr) 1994-04-27
AU577143B2 (en) 1988-09-15
DK448185D0 (da) 1985-10-02
NO853896L (no) 1986-04-04
PT81046B (pt) 1987-08-19
NO900023D0 (no) 1990-01-04
NO166213B (no) 1991-03-11
AU4617885A (en) 1986-04-10
EP0322400A3 (en) 1989-07-19
EP0176816B1 (fr) 1989-09-27
JPS6187505A (ja) 1986-05-02
ATE104835T1 (de) 1994-05-15
PT81046A (de) 1985-09-01
EP0176816A1 (fr) 1986-04-09
NO166213C (no) 1991-06-19
DK448185A (da) 1986-04-04
CA1252036A (fr) 1989-04-04
ATE46608T1 (de) 1989-10-15
FI853811L (fi) 1986-04-04
DE3587809D1 (de) 1994-06-01
JPH0421482B2 (fr) 1992-04-10
NO900023L (no) 1986-04-04
ZA857307B (en) 1986-06-25
DK164630B (da) 1992-07-27
CH666171A5 (de) 1988-07-15
FI81245C (fi) 1990-10-10
DE3573209D1 (en) 1989-11-02
DK164630C (da) 1992-12-14
FI853811A0 (fi) 1985-10-02
BR8504774A (pt) 1986-07-22
FI81245B (fi) 1990-06-29

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