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EP0202390B1 - Sitzmöbel - Google Patents

Sitzmöbel Download PDF

Info

Publication number
EP0202390B1
EP0202390B1 EP86100999A EP86100999A EP0202390B1 EP 0202390 B1 EP0202390 B1 EP 0202390B1 EP 86100999 A EP86100999 A EP 86100999A EP 86100999 A EP86100999 A EP 86100999A EP 0202390 B1 EP0202390 B1 EP 0202390B1
Authority
EP
European Patent Office
Prior art keywords
seat
lever
chair
guide member
backrest
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.)
Expired
Application number
EP86100999A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0202390A1 (de
Inventor
Rainer Machate
Robert Vonhausen
E. Dipl.-Ing. Hansen
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.)
Vermoegensverwaltung Franz Vogt Familienstiftung KG
Original Assignee
Voko Franz Vogt and Co
Voko Franz Vogt and Co KG
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 Voko Franz Vogt and Co, Voko Franz Vogt and Co KG filed Critical Voko Franz Vogt and Co
Priority to AT86100999T priority Critical patent/ATE39829T1/de
Publication of EP0202390A1 publication Critical patent/EP0202390A1/de
Application granted granted Critical
Publication of EP0202390B1 publication Critical patent/EP0202390B1/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
    • 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
    • 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
    • A47C7/46—Supports for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs

Definitions

  • the invention relates to a piece of seating furniture with a seating surface which is rotatably mounted about a pivot point in the region of its front end relative to the seat support of the seating furniture and with a backrest. which is connected to one or more levers which are pivotally mounted on the seat support and are pivotally connected to the seat surface 'at a distance from their pivot points on the seat support such that when the backrest is inclined, the seat surface is inclined simultaneously in a predetermined ratio, whereby a handlebar is articulated on the backrest below the point of application of the lever on the backrest.
  • the seat back is rotatably mounted on the chair about a front pivot bearing, while the back rest is pivotally connected to the seat support via a lever.
  • the connection between the backrest, namely the lever of the backrest, and the seat is made via a handlebar, so that the seat is lowered by a certain amount when the backrest is inclined.
  • a similar arrangement is known from utility model 8417 429. The difference here is only that the lever of the backrest is directly rotatably connected to the seat, while the handlebar is arranged between the lever and the seat support. Here too, an inclination of the seat surface is obtained with a certain backrest inclination.
  • All these known seating furniture have the disadvantage that the support of the back in the lumbar region can only be optimally designed for a very specific backrest angle, while the support with a modified backrest angle, be it with a steeper or with a flatter standing backrest, is insufficient.
  • the invention has for its object to provide seating of the type mentioned in such a way that the support of the lumbar vertebrae in the back area is changed by changing the inclination of the backrest in such a way that this support is optimal for every seat back inclination.
  • an additional handlebar is thus arranged parallel to the lever to which the backrest is attached and which simultaneously engages the seat surface, the lower end of which can be articulated either on the seat support or on the seat surface.
  • the upper end of the handlebar is articulated in the lumbar region of the backrest.
  • the lever supporting the backrest as well as the handlebar are rotatably connected to each other, so that when a backrest inclination is changed, part of the backrest is additionally pivoted in an opposite sense, so that with a strong backrest inclination, the support in the lumbar region is greater, while the backrest inclination becomes steeper is reduced accordingly, in such a way that the appropriate support is obtained with every backrest inclination.
  • a relative movement between the handlebar and lever can be compensated.
  • the compensation of this relative movement can either be obtained by a link guide, or by an additional handlebar, which either connects the lever and the handlebar, or connects the handlebar connected to the backrest on the seat support.
  • this link guide can also lie between the handlebar and the seat support, the size of the change in Shape of the backrest in the lumbar region determined.
  • the additional handlebar or the link guide is arranged between the handlebar and the lever, the inclination of the link guide or the length of the handlebar being adjustable to adjust the seating to different body sizes.
  • the seating furniture 1 shown in FIGS. 1 to 3 has a seat support 2 to which the seat surface 3 is pivotably articulated.
  • the seat 3 is integrally connected to the backrest 4, a continuous seat shell 6 being used, which is either designed to be flexible or has flexible areas 7, 8, 9.
  • a lever 5 is fastened to the backrest 4 by means of two bolts 11, 12 which engage in slots 13, 14 formed on the lever 5.
  • the backrest 4 is held in a rotationally fixed manner relative to the lever 5, but it is possible to move the backrest 4 in the direction of the lever 5.
  • the other end of the lever 5 is mounted on an arm 15 of the seat support 2 on an axis of rotation 16.
  • a bolt 17 is attached, which engages in a link guide 18 which is formed in the lever 5.
  • the lever 5 pivots about its pivot point 16 on the seat support 2 and takes the seat surface with it via the pin which engages in the link guide 18 and is fastened to the seat surface 3.
  • a ratio of 1: 2 is advantageously selected here, with a backrest inclination of 1 ° taking place with a backrest inclination of 2 °.
  • the axis of rotation 16 is mounted in a bearing bush 19, 16 disks 20 being arranged in a rotationally fixed manner on the axis of rotation, which can be fixed by means of a braking device 21.
  • the axis of rotation 16 is designed as a torsion bar and is held in the bearing bush 19 in a rotationally fixed manner.
  • a threaded bolt 34 which acts on the torsion bar via a lever 35, the prestressing force and thus the restoring torque of the axis of rotation 16 is set.
  • the force required for pivoting the backrest is changed, so that by means of this device the pivotability can be adjusted to the weight of the user.
  • the backrest is held by means of two levers 5 which are arranged on both sides of the seat surface and the backrest.
  • These levers as well as the handlebars are advantageously arranged within the seat and backrest area.
  • the two levers 5 arranged on the sides of the seating furniture 1 are connected to one another by means of a web 23, the web being screwed to the seat shell 6 of the seating furniture 1.
  • the web 23 has the bolts 11, 12 which are arranged displaceably in the slots 13, 14 of the lever 5.
  • the web can also be omitted and replaced by parts of the seat shell.
  • a link 24 is switched on, which is hinged at its lower end to the bolt 17 of the seat surface 3 and at its upper end to a bolt 25 which is connected to the backrest 4.
  • Fig. 3 shows that with the bolt 25 a web 26 is connected, which in turn is attached to the backrest 4 in the region of the lumbar vertebra.
  • the web 26 can advantageously be part of the seat shell.
  • a pin 27 is attached which engages through a hole in the lever 5.
  • a plate 28 is attached to the lever, which has a slot 29.
  • the plate 28 itself is arranged pivotably about a bolt 30, the pivoting range of the plate 28 around the bolt 30 being limited by a pin 31 which is fastened to the plate 28 and engages in a slot 32 in the lever 5.
  • a pin 31 which is fastened to the plate 28 and engages in a slot 32 in the lever 5.
  • Fig. 1 the two limit positions are drawn, with only a slight lumbar support is required in the steep position of the backrest with solid lines, while the lumbar support is much stronger when the backrest is strongly inclined, so that good and correct lumbar support is also given in this position is.
  • the same parts are provided with the same reference numerals.
  • the only difference from the exemplary embodiment according to FIG. 1 is that here the seat 3 and the backrest 4 are not formed in one piece, but are separated from one another. In this case, no elastic seat shell or flexible areas need to be provided.
  • the structure of the chair and the connection of the handlebar and the lever to one another are the same as those described with reference to the exemplary embodiment according to FIGS. 1 to 3.
  • the same parts are provided with the same reference symbols.
  • the difference to the exemplary embodiments according to FIGS. 1 to 4 is that the coupling of the lever 5 to the handlebar 24 does not take place via a slot 29 in which engages a pin 27, but via an intermediate link 36, which is advantageously adjustable in length.
  • This handlebar is advantageously designed in the form of a turnbuckle. whereby additional adjustments can be achieved in that the articulation points of the handlebar on the lever 5 and / or on the handlebar 24 are adjustable. This results in the same guidance of lever 5 and handlebar 24 as with the aid of plate 28 provided with a slot 29.
  • the two levers 5 are arranged laterally on the seat back and connected to one another via a web 23 which is fastened to the seat shell 6 in the upper region.
  • Two levers 5 lying on the side are not necessarily required here, but a centrally arranged lever 5 can also be used, which is arranged centrally to the seat shell 6 and is in turn firmly connected to the seat shell in the upper region thereof.
  • the lever 5 is designed such that it extends over the entire or at least a large area of the seat shell 6: the lever 5 is then in turn connected to the seat shell 6 in the upper region.

Landscapes

  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
  • Finger-Pressure Massage (AREA)
  • Special Chairs (AREA)
  • Liquid Crystal (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Seats For Vehicles (AREA)
EP86100999A 1985-05-23 1986-01-25 Sitzmöbel Expired EP0202390B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86100999T ATE39829T1 (de) 1985-05-23 1986-01-25 Sitzmoebel.

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE3518567 1985-05-23
DE8515221U DE8515221U1 (de) 1985-05-23 1985-05-23 Sitzmöbel
DE3518567 1985-05-23
DE3534496 1985-09-27
DE19853534496 DE3534496A1 (de) 1985-05-23 1985-09-27 Sitzmoebel

Publications (2)

Publication Number Publication Date
EP0202390A1 EP0202390A1 (de) 1986-11-26
EP0202390B1 true EP0202390B1 (de) 1989-01-11

Family

ID=41057820

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86100999A Expired EP0202390B1 (de) 1985-05-23 1986-01-25 Sitzmöbel

Country Status (16)

Country Link
US (1) US4685733A (es)
EP (1) EP0202390B1 (es)
JP (1) JPH0734771B2 (es)
KR (1) KR930006147B1 (es)
AT (1) ATE39829T1 (es)
AU (1) AU580871B2 (es)
BR (1) BR8602327A (es)
CA (1) CA1235997A (es)
DE (3) DE8515221U1 (es)
DK (1) DK166254C (es)
ES (1) ES296925Y (es)
GR (1) GR860277B (es)
HR (1) HRP921174B1 (es)
NO (1) NO165983C (es)
YU (1) YU44911B (es)
ZA (1) ZA863758B (es)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5567012A (en) * 1986-04-10 1996-10-22 Steelcase, Inc. Chair control
DE3642796A1 (de) * 1986-12-15 1988-06-23 Eckhard Hansen Punktsynchronverstelleinrichtung fuer buerostuehle, sitzmoebel o. dgl.
US4790496A (en) * 1987-07-31 1988-12-13 The Jepson Burns Corporation Aircraft seat with flexible lumbar panel
FR2620607B1 (fr) * 1987-09-22 1991-03-15 Strafor Sa Siege ergonomique
DE3807984A1 (de) * 1988-03-10 1989-09-21 Roeder Gmbh Stuhl, insbesondere arbeits- oder buerostuhl
DE8808022U1 (de) * 1988-06-22 1988-08-11 Bürositzmöbelfabrik Friedrich-W. Dauphin GmbH & Co, 8561 Offenhausen Stuhl, insbesondere Bürostuhl
DE3838999A1 (de) * 1988-11-18 1990-05-23 Roeder Gmbh Stuhl, insbesondere arbeits- oder buerostuhl
US4906045A (en) * 1989-03-20 1990-03-06 The Shaw-Walker Company Chair control for a pedestal chair having a knee-tilt seat
DE3916474A1 (de) * 1989-05-20 1990-11-22 Roeder Soehne Sitzmoebelfab Stuhl, insbesondere arbeits- oder buerostuhl
US4892354A (en) * 1989-06-30 1990-01-09 Shepherd Products U.S., Inc. Chair seat tilt control
US5029940A (en) * 1990-01-16 1991-07-09 Westinghouse Electric Corporation Chair tilt and chair height control apparatus
DE4312113C1 (de) * 1993-04-14 1994-10-27 Mauser Waldeck Ag Sitzmöbel
DE4327373C2 (de) * 1993-08-14 1997-07-17 Girsberger Holding Ag Stuhl, insbesondere Bürostuhl
US5582459A (en) * 1993-09-30 1996-12-10 Itoki Crebio Corporation Chair having tiltable seat back
ES2110875B1 (es) * 1994-04-21 1998-11-16 Jevit Manufact Metalicas Sa Sillon ergonomico autoequilibrado.
EP0763991A4 (en) * 1994-06-10 2000-10-04 Haworth Inc ERGONOMIC CHAIR
US5725276A (en) * 1995-06-07 1998-03-10 Ginat; Jonathan Tilt back chair and control
USD386023S (en) * 1996-09-13 1997-11-11 Herman Miller, Inc. Seat and back unit for a chair
US5971481A (en) * 1996-10-11 1999-10-26 Giroflex Entwicklungs Ag Chair, specially an office chair
US5823626A (en) * 1996-12-30 1998-10-20 Haas; Peter J. Mechanism for reclining chairs
US5909923A (en) * 1997-10-24 1999-06-08 Steelcase Inc. Chair with novel pivot mounts and method of assembly
USD420523S (en) * 1998-06-05 2000-02-15 Herman Miller, Inc. Chair
DE10215285A1 (de) * 2002-04-07 2003-10-16 Christian Erker Sitzschale mit Neigungs-Konturkoppelungsmechanismus
JP5002835B2 (ja) * 2005-10-27 2012-08-15 コクヨ株式会社 部材の接続構造
JP4721183B2 (ja) * 2005-11-11 2011-07-13 コクヨ株式会社 バネの取付構造
DE202006018268U1 (de) * 2006-12-04 2007-02-08 Sato Office Gmbh Sitz mit einer Sitzplatte und einer Rückenlehne
US9474377B2 (en) 2012-05-16 2016-10-25 Safco Products Co. Upright active-sitting seat
DE102013205784A1 (de) * 2013-04-02 2014-10-02 Siemens Aktiengesellschaft Verstellbarer Fahrzeugsitz
USD741073S1 (en) 2013-04-30 2015-10-20 FocalUprightFurniture, LLC Upright seat
US9801471B2 (en) 2014-04-17 2017-10-31 Hni Technologies Inc. Chair and chair control assemblies, systems, and methods
DE102015102007B3 (de) * 2015-02-12 2016-07-28 Wilkhahn Wilkening + Hahne Gmbh + Co. Sitzmöbel
EP3556252B1 (en) * 2018-04-17 2020-05-13 L&P Property Management Company Tilt mechanism for a chair and chair
JPWO2020255195A1 (es) * 2019-06-17 2020-12-24
US11974678B2 (en) * 2021-07-19 2024-05-07 Pierre Heroux Cushioned furniture restoration kit

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US488992A (en) * 1893-01-03 forney
US3588172A (en) * 1969-03-12 1971-06-28 Universal Oil Prod Co Reclining seat
AU520781B2 (en) * 1977-09-22 1982-02-25 Jason La-Z-Boy Chair Co. Pty. Ltd. Reclining chair
US4380352A (en) * 1979-06-11 1983-04-19 Knoll International, Inc. Reclining chair
DE3036993A1 (de) * 1980-10-01 1982-05-13 Wilkhahn Wilkening + Hahne GmbH + Co, 3252 Bad Münder Arbeits-sitzmoebel
DE3116459A1 (de) * 1981-04-25 1982-11-11 Sitag Sitzmöbel AG, 9430 St. Margrethen Stuhl
CH661647A5 (en) * 1981-08-19 1987-08-14 Giroflex Entwicklungs Ag Chair
US4560199A (en) * 1983-07-22 1985-12-24 Pamont Ag Recliner chair

Also Published As

Publication number Publication date
AU580871B2 (en) 1989-02-02
EP0202390A1 (de) 1986-11-26
YU15986A (en) 1988-08-31
KR860008754A (ko) 1986-12-18
BR8602327A (pt) 1987-01-21
DK237986D0 (da) 1986-05-22
ATE39829T1 (de) 1989-01-15
NO165983C (no) 1991-05-15
DE8515221U1 (de) 1986-05-22
AU5730186A (en) 1986-11-27
ES296925Y (es) 1989-03-16
JPS6257518A (ja) 1987-03-13
CA1235997A (en) 1988-05-03
JPH0734771B2 (ja) 1995-04-19
DK166254B (da) 1993-03-29
DE3661683D1 (en) 1989-02-16
ES296925U (es) 1988-08-16
DK166254C (da) 1993-08-23
GR860277B (en) 1986-08-18
US4685733A (en) 1987-08-11
NO862031L (no) 1986-11-24
DK237986A (da) 1986-11-24
YU44911B (en) 1991-04-30
NO165983B (no) 1991-02-04
KR930006147B1 (ko) 1993-07-08
ZA863758B (en) 1987-01-28
HRP921174B1 (en) 1996-02-29
DE3534496A1 (de) 1986-11-27

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