EP0250207A2 - Verstellbare Stühle - Google Patents

Verstellbare Stühle Download PDF

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Publication number
EP0250207A2
EP0250207A2 EP87305331A EP87305331A EP0250207A2 EP 0250207 A2 EP0250207 A2 EP 0250207A2 EP 87305331 A EP87305331 A EP 87305331A EP 87305331 A EP87305331 A EP 87305331A EP 0250207 A2 EP0250207 A2 EP 0250207A2
Authority
EP
European Patent Office
Prior art keywords
seat portion
base
chair
seat
relative
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
EP87305331A
Other languages
English (en)
French (fr)
Other versions
EP0250207B1 (de
EP0250207A3 (en
Inventor
Adrian Michael Reed
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.)
MINES & WEST BUSINESS FURNITURE LIMITED
Original Assignee
Mines & West Business Furniture Ltd
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 Mines & West Business Furniture Ltd filed Critical Mines & West Business Furniture Ltd
Publication of EP0250207A2 publication Critical patent/EP0250207A2/de
Publication of EP0250207A3 publication Critical patent/EP0250207A3/en
Application granted granted Critical
Publication of EP0250207B1 publication Critical patent/EP0250207B1/de
Expired 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

Definitions

  • the present invention relaes to improvements in adjustable chairs.
  • a chair comprising a base, a seat and means adjustably mounting the seat on the base, the seat comprising a seat portion and a back rest portion, and the adjustable mounting means comprising a first support member and a second support member, each support member being pivotally connected to the base and the seat portion for pivotal movement relative to the base and the seat portion about generally horizontal axes extending transversely of the seat portion, the support members forming opposite sides of a quadrilateral linkage, the other sides of which are provided by the base and seat portion, which extends generally between the front and rear of the seat portion and which permits movement of the seat portion relative to the base.
  • the back rest portion may be connected for movement with one of the support members so as to move relative to the seat portion with movement of the seat portion relative to the base.
  • the quadrilateral linkage is advantageously arranged to enable the seat portion to move between a rearward lower position and a forward upper position.
  • the quadrilateral linkage may be arranged so that the angle between the seat and back rest portions decreases as the seat portion moves forwardly.
  • the chair may include stop means for limiting movement of the seat portion relative to the base.
  • Resilient means for biassing the seat portion to its forward position may also be provided.
  • the resilient means may be adjustable to adjust the biassing force and may be lockable to lock the chair in any desired position. Alternatively, the locking means may be provided separately from the biassing means.
  • the chair shown in the drawings comprises a base 1, a seat 2, comprising a seat portion 3 and a back rest portion 4, and adjustable mounting means 5 for adjustably mounting the seat 2 on the base 1 and permitting the seat to move between the positions shown in full and broken lines in Figure 1.
  • the seat and back rest portions 3,4 are shown diagrammatically and in use of the invention may comprise a load bearing part, which may be in the form of a frame work or, as shown, a shell, which may for example be moulded.
  • the load bearing part may be cushioned and upholstered.
  • the base 1 comprises an upright 6 which is supported on the ground by any suitable means.
  • upright 6 is supported by a plurality of generally radially extending legs 7 provided at their ends with castors or glides 8.
  • Upright 6 may be rotatable and adjustable in length relative to legs 7.
  • Cantilevered from the upper end of upright 6 is a pair of fixed support members 9 between which and the seat portion 3 the adjustable mounting means 5 are connected.
  • the base 1 may take other conventional forms. For example, it may comprise four legs interconnected by a framework which provides one or two fixed support members equivalent to members 9.
  • the adjustable mounting means 5 comprise two support members 10,11, each of which is connected to the member 9 of the base and to the seat portion 3 for pivotal movement relative thereto ab out generally horizontal axes 12,13,14 and 15 which extend transversely of the seat portion 3.
  • Support members 10,11 form the opposite sides of a quadrilateral linkage of which the other sides are provided by base support member 9 and seat portion 3 and which, as shown, extends generally centrally between the front and rear of the seat portion 3.
  • axes 12 and 13, 13 and 15, 15 and 14, and 14 and 12 are arranged so that seat portion 3 will, as shown in Figure 1, move relative to base 1 between a lower rearward position, shown in full lines in Figure 1 in which the seat portion may be generally rearwardly inclined, and a raised forward position, shown in broken lines in Figure 1, in which the seat portion may be substantially horizontal or slightly forwardly inclined.
  • the back rest portion 4 is advantageously connected for movement with the rearward support member 11 so that it has a fixed orientation relative to member 11 and as a consequence pivots relative to seat portion 3 as seat portion 3 is moved relative to base 1.
  • the quadrilateral linkage is designed so that, as seat portion 3 moves from its rear ward position to its forward position, the angle between the seat portion and the back rest portion decreases.
  • the back rest portion may be generally vertical.
  • resilient biassing means are provided, for biassing the seat portion to its forward position and counterbalancing the weight of the user so that the seat portion will move to its rearward position under the control of the user and specifically by the user repositioning himself in the chair.
  • the resilient biassing means 16 acts generally between axes 13 and 14 of the quadrilateral linkage, and is in the form of a "gas spring", one end of which is pivotally connected to the seat portion 3 in the region of axis 14 and the other end of which is pivotally connected to upright 6 with the line of action of the "gas spring" approximately passing through axis 13.
  • the gas spring may be arranged to provide an adjustable bias, for adjustment by the user depending on the user's weight, and it may also be provided with a manually operable lock so that the user can lock the seat portion in a required position relative to the base.
  • the gas spring 16 incorporates limits on its extension and contraction and these provide stops for limiting movement of the seat portion 3 relative to the base.
  • support members 10 and 11 are provided at each end with transversely projecting portions 10a,11a, the ends of which have blind bores for receiving stub shafts about which the members 10,11 pivot and which define the axes 12 to 15.
  • the stub shafts are mounted in base members 9 with the members 10,11 extending from between the members 9.
  • the stub shafts are mounted in a similar pair of support members 17 which are fixed to the underside of the seat portion 3.
  • biassing means may take other forms.
  • they may be provided by an adjustable torsion spring or bar incorporated in one or more of the pivot axes 12 to 15 of the quadrilateral linkage, or a tension or compression spring acting between opposed pairs of axes of the linkage.
  • the biassing means are adjustable to permit adjustment to take account of varying user weights.
  • stop means for limiting movement of the seat portion relative to the base may be, as shown, provided by the biassing means, or may be provided separately.
  • components of the quadrilateral linkage may be brought into abutment in the limit positions of the linkage.
  • locking means where provided, for locking the seat portion in a desired position relative to the base portion, may, as shown be incorporated in the biassing means or may be provided separately, for example in the form of a mechanical lock acting on one or more of the piv ot axes.
  • both of axes 12 and 13 are positioned further to the rear of the chair with the members 10,11 extending forwardly therefrom to their pivotal connections with the seat portion, member 11 being longer than member 10.
  • members 10,11 may be duplicated and extend to either side of single members 9,17.
  • member 11 may be replaced by a pair of members extending between pivot axes 13 and 15 but each shaped to form a loop between these pivot axes and which serve as the arm rests of the chair.

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)
  • Chair Legs, Seat Parts, And Backrests (AREA)
EP19870305331 1986-06-16 1987-06-16 Verstellbare Stühle Expired EP0250207B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8614651 1986-06-16
GB868614651A GB8614651D0 (en) 1986-06-16 1986-06-16 Chair adjustment mechanism

Publications (3)

Publication Number Publication Date
EP0250207A2 true EP0250207A2 (de) 1987-12-23
EP0250207A3 EP0250207A3 (en) 1988-04-27
EP0250207B1 EP0250207B1 (de) 1992-06-10

Family

ID=10599534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870305331 Expired EP0250207B1 (de) 1986-06-16 1987-06-16 Verstellbare Stühle

Country Status (4)

Country Link
EP (1) EP0250207B1 (de)
DE (1) DE3779696T2 (de)
ES (1) ES2033312T3 (de)
GB (1) GB8614651D0 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3737491A1 (de) * 1987-11-05 1989-05-18 Wilkhahn Wilkening & Hahne Stuhl
DE3737492A1 (de) * 1987-11-05 1989-05-18 Wilkhahn Wilkening & Hahne Stuhl
DE4409098A1 (de) * 1994-03-17 1995-09-21 Froescher Gmbh & Co Kg Stuhl mit Neigungsmechanik
EP0645976A4 (de) * 1992-06-15 1996-05-22 Miller Herman Inc Bürostuhl.
EP1060694A1 (de) 1999-06-17 2000-12-20 König + Neurath AG Stuhl, insbesondere Bürostuhl
DE10064204A1 (de) * 2000-12-22 2002-07-04 Wilkhahn Wilkening & Hahne Stuhl
US6945602B2 (en) 2003-12-18 2005-09-20 Haworth, Inc. Tilt control mechanism for chair
US7721399B2 (en) 2005-10-25 2010-05-25 Global Total Office An Ontario Limited Partnership Having Global Upholstery Co.Inc. As Its General Partner Method for replacing a telescoping cylinder in a reconfigurable chair
US8157326B2 (en) 2006-05-11 2012-04-17 Tech-Nicon International Management Services Limited Seat

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01297009A (ja) * 1987-12-28 1989-11-30 Isao Hosoe 人間工学的椅子の座面
DE3837727A1 (de) * 1988-11-07 1990-05-10 Link Wilhelm Kg Stuhl, insbesondere buerostuhl
GB2293312B (en) * 1994-08-03 1999-01-20 Crispin Hall Variable ratio synchronised chair movement
US5899530A (en) * 1995-08-23 1999-05-04 Global Upholstery Company Control mechanism for a chair
DE29723702U1 (de) 1997-07-05 1998-12-24 König + Neurath AG, 61184 Karben Stuhl, insbesondere Bürostuhl
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2461472A1 (fr) * 1979-07-23 1981-02-06 Drabert Soehne Siege, notamment siege de consultation d'appareils de visualisation de donnees
US4502729A (en) * 1981-08-19 1985-03-05 Giroflex Entwicklungs Ag Chair, especially a reclining chair

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2461472A1 (fr) * 1979-07-23 1981-02-06 Drabert Soehne Siege, notamment siege de consultation d'appareils de visualisation de donnees
US4502729A (en) * 1981-08-19 1985-03-05 Giroflex Entwicklungs Ag Chair, especially a reclining chair

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3737491A1 (de) * 1987-11-05 1989-05-18 Wilkhahn Wilkening & Hahne Stuhl
DE3737492A1 (de) * 1987-11-05 1989-05-18 Wilkhahn Wilkening & Hahne Stuhl
DE3737491C2 (de) * 1987-11-05 2003-03-20 Wilkhahn Wilkening & Hahne Stuhl
DE3737492C2 (de) * 1987-11-05 2003-03-27 Wilkhahn Wilkening & Hahne Stuhl mit vier Drehgelenken
EP0645976A4 (de) * 1992-06-15 1996-05-22 Miller Herman Inc Bürostuhl.
DE4409098A1 (de) * 1994-03-17 1995-09-21 Froescher Gmbh & Co Kg Stuhl mit Neigungsmechanik
EP1060694A1 (de) 1999-06-17 2000-12-20 König + Neurath AG Stuhl, insbesondere Bürostuhl
DE10064204A1 (de) * 2000-12-22 2002-07-04 Wilkhahn Wilkening & Hahne Stuhl
US6945602B2 (en) 2003-12-18 2005-09-20 Haworth, Inc. Tilt control mechanism for chair
US7721399B2 (en) 2005-10-25 2010-05-25 Global Total Office An Ontario Limited Partnership Having Global Upholstery Co.Inc. As Its General Partner Method for replacing a telescoping cylinder in a reconfigurable chair
US8157326B2 (en) 2006-05-11 2012-04-17 Tech-Nicon International Management Services Limited Seat

Also Published As

Publication number Publication date
EP0250207B1 (de) 1992-06-10
EP0250207A3 (en) 1988-04-27
DE3779696T2 (de) 1993-01-21
GB8614651D0 (en) 1986-07-23
DE3779696D1 (de) 1992-07-16
ES2033312T3 (es) 1993-03-16

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