EP0688522A1 - Chaise, notamment chaise de bureau - Google Patents

Chaise, notamment chaise de bureau Download PDF

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Publication number
EP0688522A1
EP0688522A1 EP95108361A EP95108361A EP0688522A1 EP 0688522 A1 EP0688522 A1 EP 0688522A1 EP 95108361 A EP95108361 A EP 95108361A EP 95108361 A EP95108361 A EP 95108361A EP 0688522 A1 EP0688522 A1 EP 0688522A1
Authority
EP
European Patent Office
Prior art keywords
seat
spring element
chair
chair according
axis
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.)
Withdrawn
Application number
EP95108361A
Other languages
German (de)
English (en)
Inventor
Oliver Hirschoff
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.)
Wilhelm Link & Co KG Stahlrohrmobel GmbH
Original Assignee
Wilhelm Link & Co KG Stahlrohrmobel 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 Wilhelm Link & Co KG Stahlrohrmobel GmbH filed Critical Wilhelm Link & Co KG Stahlrohrmobel GmbH
Publication of EP0688522A1 publication Critical patent/EP0688522A1/fr
Withdrawn legal-status Critical Current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
    • A47C1/03288—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with resilient blocks
    • 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
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03216—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by fluid means
    • 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 an office chair, with a seat support, a seat pivotally mounted thereon about a horizontal axis and an elastic spring element between the seat and the seat support.
  • the lever arm on which the spring acts can also be changed.
  • this adjustment is usually also achieved using a handwheel, so that several turns of this handwheel are also necessary in order to adapt the restoring force to the body weight of the user of the chair.
  • the object of the invention is to design a chair of the type mentioned in such a way that the restoring force of the spring element can be varied over a wide range with small actuating forces and small actuating paths.
  • the spring element can either have a different radial extension to the axis, or the spring element can have different suspension properties around the axis.
  • the spring element by rotating the spring element about the substantially vertical axis, a large proportion of the spring element is arranged close to the horizontal axis, about which the seat is pivotably mounted. As a result, only a small proportion of its volume is compressed when the seat is inclined, with the result that only a small restoring force is exerted on the seat. If, on the other hand, the spring element is rotated in such a way that its larger portion is located in a region distant from the horizontal axis, the largest part of the spring element is compressed when the seat is inclined and a relatively high restoring force is thus exerted on the seat.
  • the force exerted by the spring element on the seat can be varied by the spatial distribution of the mass or volume of the spring element below the seat.
  • the part of the spring element with the harder suspension properties can be pushed into the region near the horizontal axis by rotating the spring element about the substantially vertical axis in order to set a high restoring force, or the spring element can be rotated so that its area with the softer suspension properties comes to lie close to the horizontal axis, so that the spring element exerts only a slight force on the seat.
  • the spring element is particularly useful in the first case to manufacture the spring element from a spring block made of cellularly foamed polyurethane with a high density.
  • This material which is similar in structure to a foam, offers very good suspension properties. It can be compressed up to 60% of the original height and generates very high forces that cannot be achieved by any metallic spring with comparable installation dimensions. There is also a progressive force curve, ie at the end of the spring travel the force increases disproportionately. This effect is perceived as pleasant on the chair and is expressly desired.
  • other elastomers can also be used as a spring block.
  • the restoring force is usually adjusted when the seat is tilted forward.
  • the upper side of the spring element can have a truncated cone-like extension on the vertical axis, which engages in a corresponding concave recess on the seat. This increase is under slight pressure even at the foremost seat angle and thus holds the spring element in position.
  • the transition surfaces between the truncated cone of the spring element and the seat surface should be rounded, so that a uniform increase in the force is felt when tilting back.
  • the design of the spring element with a truncated cone-like elevation on its upper side also has the advantage that at front seat inclination angles only those areas of the spring element that are close to the vertical axis of rotation of the spring element are under pressure. Only there is a frictional force generated between the spring element and the seat by the pressure of the seat on the spring element. This friction therefore only requires a small torque to overcome the vertical axis of rotation of the spring element. This braking torque is adjusted so that the spring element can be easily turned on the one hand, but on the other hand is not independently adjusted by vibrations or movements.
  • a stepless locking of the chair at any angle can be achieved by an additional locking element, which can also be a gas spring, for example.
  • the chair additionally has a backrest which can be adjusted by an inclination and which is firmly connected to a backrest support, the backrest support having a backrest holder and an extension arranged at an angle to the backrest holder, the upper end of which is articulated to the seat and the lower end of which is connected to one Handlebar is articulated, which is articulated to the seat support.
  • the handlebar can be connected to a substantially downward-pointing lever, which is connected via the locking element to the horizontal axis, about which the seat is pivotally mounted.
  • a locking element is preferably to be arranged laterally next to the spring element below the seat.
  • Fig. 1 shows a schematic representation of an office chair 10 with a seat bracket 11, a seat 12 and a backrest 13.
  • the seat bracket 11 is fixed at an obtuse angle so firmly on a chair column 14 that it points to the front edge of the seat 12.
  • the chair column 14 is arranged on a base frame 16 mounted on rollers 15.
  • a bore 18 is provided in the seat support 11, in which a vertical axis 19 is rotatably mounted. At the upper end of this vertical axis 19, a horizontal turntable 20 is attached, which rests on a horizontal surface 21 of the seat support 11. On this turntable 20, an elastic spring element 22 is fastened, which together with the turntable 20 can be rotated about the axis 19.
  • This spring element 22 consists of a cellularly foamed polyurethane with a high density.
  • FIGS. 2 and 3 show the shape and position of the spring element 22 which is arranged on the turntable 20, which in turn rests on the horizontal plate 21 of the seat support 11.
  • the turntable 20 can be rotated by means of a lever 23 via the axis 19, which passes through a bore 18 in the seat support 11.
  • This spring element can, as shown in Fig. 2 and in Fig. 3 with solid lines, be set so that the extension 22.2 of the spring element 22 lies between the vertical axis 19 and the horizontal axis 17. In this position, in which the largest part of the spring element is located near the pivot axis 17 of the seat 12, only a small proportion of the volume of the spring element 22 is compressed when the seat 12 is tilted. The force exerted by the spring element 22 on the seat 12 is therefore low in this position.
  • the spring element 22 can, however, in the direction of arrow 26, i.e. H. in the top view counterclockwise, a quarter turn to bring the extension 22.2 of the spring element 22 in a position away from the horizontal axis 17. In this position, the largest part of the spring element 22 is now at a significant distance from the pivot axis 17 of the seat 12, so that an inclination of the seat 12 results in a strong compression of the spring element 22 and thus a very high restoring force.
  • the spring element by turning the spring element about the axis 19 by means of the lever 23, the restoring force exerted by the spring element 22 on the seat 12 can be continuously adjusted.
  • FIG. 4 clearly shows once again the assembly of seat 12, spring element 22 and seat support 11.
  • Seat 12 is mounted with its recess 25 on the frustoconical elevation 24 of spring element 22.
  • the spring element 22 in turn lies on a plate 20 which can be rotated together with the axis 19 by the lever 23.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
EP95108361A 1994-06-21 1995-06-01 Chaise, notamment chaise de bureau Withdrawn EP0688522A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4421597 1994-06-21
DE19944421597 DE4421597A1 (de) 1994-06-21 1994-06-21 Stuhl, insbesondere Bürostuhl

Publications (1)

Publication Number Publication Date
EP0688522A1 true EP0688522A1 (fr) 1995-12-27

Family

ID=6521082

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95108361A Withdrawn EP0688522A1 (fr) 1994-06-21 1995-06-01 Chaise, notamment chaise de bureau

Country Status (2)

Country Link
EP (1) EP0688522A1 (fr)
DE (1) DE4421597A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001078558A1 (fr) * 2000-04-14 2001-10-25 Provenda Marketing Ag Siege, en particulier chaise de bureau
WO2007112236A1 (fr) * 2006-03-24 2007-10-04 Hni Corporation fauteuil inclinable avec une capacité de réglage améliorée
USD731833S1 (en) 2014-04-17 2015-06-16 Allsteel Inc. Chair
US9332851B2 (en) 2013-03-15 2016-05-10 Hni Technologies Inc. Chair with activated back flex
US9504331B2 (en) 2007-03-13 2016-11-29 Hni Technologies Inc. Dynamic chair back lumbar support system
USD796883S1 (en) 2014-10-15 2017-09-12 Hni Technologies Inc. Chair
US9801470B2 (en) 2014-10-15 2017-10-31 Hni Technologies Inc. Molded chair with integrated support and method of making same
US10064493B2 (en) 2014-04-17 2018-09-04 Hni Technologies Inc. Flex lumbar support
US10927545B2 (en) 2010-05-05 2021-02-23 Allsteel Inc. Modular wall system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010015866B4 (de) * 2010-03-09 2022-01-20 Kinnarps Ab Stuhl
DE102022128794A1 (de) 2022-10-29 2024-05-02 Comfordy Co., Ltd. Gleichlaufvorrichtung einer Stuhlrückenlehne

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985005018A1 (fr) * 1984-05-08 1985-11-21 HA^oG A/S Mecanisme de basculement pour un siege de chaise ou analogue
US4871208A (en) * 1988-09-06 1989-10-03 Dewey Hodgdon Chair tilt control mechanism

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3039656A1 (de) * 1980-10-21 1982-05-27 Wilkhahn Wilkening & Hahne Sitzmoebel mit in verschiedenen stellungen arretierbarem sitz
DE3139448C2 (de) * 1981-10-03 1984-06-07 Kusch & Co Sitzmöbelwerke KG, 5789 Hallenberg Stuhl
DE8327340U1 (de) * 1983-09-23 1984-01-12 Girsberger AG, 4922 Bützberg Bedienungsmechanismus fuer sitzmoebel
NL8602506A (nl) * 1986-10-06 1988-05-02 Ahrend Groep Nv Stoel met beweegbare zitting en rugleuning.
DE3800751A1 (de) * 1987-01-19 1988-08-04 Okamura Corp Sessel
DE9003589U1 (de) * 1990-03-28 1991-07-25 Fritz Hansens Eft. A/S, Alleroed Sitzmechanik
AT398160B (de) * 1992-06-10 1994-10-25 Froschauer Hedwig Arbeitssessel, insbesondere bürosessel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985005018A1 (fr) * 1984-05-08 1985-11-21 HA^oG A/S Mecanisme de basculement pour un siege de chaise ou analogue
US4871208A (en) * 1988-09-06 1989-10-03 Dewey Hodgdon Chair tilt control mechanism

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001078558A1 (fr) * 2000-04-14 2001-10-25 Provenda Marketing Ag Siege, en particulier chaise de bureau
WO2007112236A1 (fr) * 2006-03-24 2007-10-04 Hni Corporation fauteuil inclinable avec une capacité de réglage améliorée
US7837265B2 (en) 2006-03-24 2010-11-23 Hni Corporation Reclining chair with enhanced adjustability
CN101522075B (zh) * 2006-03-24 2012-03-28 Hni技术公司 增强可调节性的躺椅
US8297701B2 (en) 2006-03-24 2012-10-30 Hni Technologies, Inc. Reclining chair with enhanced adjustability
US9504331B2 (en) 2007-03-13 2016-11-29 Hni Technologies Inc. Dynamic chair back lumbar support system
US11725382B2 (en) 2010-05-05 2023-08-15 Allsteel Inc. Modular wall system
US10927545B2 (en) 2010-05-05 2021-02-23 Allsteel Inc. Modular wall system
US10172465B2 (en) 2013-03-15 2019-01-08 Hni Technologies Inc. Chair with activated back flex
US10893752B2 (en) 2013-03-15 2021-01-19 Hni Technologies Inc. Chair with activated back flex
US9332851B2 (en) 2013-03-15 2016-05-10 Hni Technologies Inc. Chair with activated back flex
US10064493B2 (en) 2014-04-17 2018-09-04 Hni Technologies Inc. Flex lumbar support
USD731833S1 (en) 2014-04-17 2015-06-16 Allsteel Inc. Chair
US9801470B2 (en) 2014-10-15 2017-10-31 Hni Technologies Inc. Molded chair with integrated support and method of making same
USD833193S1 (en) 2014-10-15 2018-11-13 Artco-Bell Corporation Chair
USD796883S1 (en) 2014-10-15 2017-09-12 Hni Technologies Inc. Chair

Also Published As

Publication number Publication date
DE4421597A1 (de) 1996-01-04

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