EP1211966B1 - Ergonomischer stuhl - Google Patents

Ergonomischer stuhl Download PDF

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Publication number
EP1211966B1
EP1211966B1 EP00954399A EP00954399A EP1211966B1 EP 1211966 B1 EP1211966 B1 EP 1211966B1 EP 00954399 A EP00954399 A EP 00954399A EP 00954399 A EP00954399 A EP 00954399A EP 1211966 B1 EP1211966 B1 EP 1211966B1
Authority
EP
European Patent Office
Prior art keywords
seat
backrest
relation
chair
pivot point
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 - Lifetime
Application number
EP00954399A
Other languages
English (en)
French (fr)
Other versions
EP1211966A1 (de
Inventor
Esben Skov Nielsen
Axel Pedersen
Birger Trier Larsen
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.)
RBM AS
Original Assignee
RBM AS
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
Priority claimed from DK199901175A external-priority patent/DK176630B1/da
Application filed by RBM AS filed Critical RBM AS
Publication of EP1211966A1 publication Critical patent/EP1211966A1/de
Application granted granted Critical
Publication of EP1211966B1 publication Critical patent/EP1211966B1/de
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
    • 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
    • A47C7/62—Accessories for chairs
    • A47C7/72—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like
    • A47C7/74—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like for ventilation, heating or cooling
    • A47C7/742—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like for ventilation, heating or cooling for ventilating or cooling
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C9/00—Stools for specified purposes
    • A47C9/002—Stools for specified purposes with exercising means or having special therapeutic or ergonomic effects

Definitions

  • the invention concerns a chair, preferably comprising a lower frame with a number of castors, which are individually pivotal, a central support column, which is adjustable in height and secured in said frame at its lower end, and which at its upper end is connected with a carrier bracket, which comprises an inner part, which is fixed in relation to the support column, and an outer part, which is movable in relation to the inner part, and to which outer part a seat and a backrest are secured, and where said seat can be tilted around a pivot point placed in the carrier bracket.
  • desks which are adjustable in height, where the height of the desk can be adjusted to suit the current work task, i.e. that users sometimes sit at the desk and at other times work while standing up.
  • a chair which can be adjusted in height, e.g. by means of a gas cylinder and a form of step-less locking for maintaining the adjusted height. It is also known to be able to set the angle of the seat and to be able to adjust the height of the backrest and its distance from the seat.
  • EP 0 726 723 B1 discloses a technique, whereby the backrest is adjusted in accordance with the angle of the seat, both forwards and backwards in relation to the horizontal, in such a manner that the contact plane of the backrest in relation to the user is urged closer to the vertical pivotal axis of the chair when the seat is tipped from the neutral position (horizontal) and forwards.
  • the sitting angle is opened approx. 7°, which results in the back no longer being supported, which for the user can feel unpleasant, in that it appears as if the backrest disappears when the seat is tilted to the maximum rearwards.
  • the new aspect of the chair according to the invention is that the height of the backrest in relation to the tilting point of the seat, seen in a direction substantially at right-angles to the seat, is more or less constant.
  • the backrest is moved in a force-controlled manner, so that when the seat is tilted forwards from the neutral position, the sitting angle - which is the angle between the seat and the backrest - is opened, which results in an ergonomically correct sitting position with the seat tilted forwards to a maximum. Since the seat can be tilted forwards more than is possible with the remaining chairs on the present market, it is possible to provide this chair with a central support column, which has a greater lift-height than that which is otherwise normal for office chairs, in that it is hereby still possible for the user to support himself with his feet on the floor.
  • the lift-height can be increased e.g. by approx. 50%.
  • the seat is adjusted in the horizontal direction in order to be adapted in an even better manner to the individual user's requirements for adjustment of the sitting position.
  • a further comfort provided by the chair is the ergonomic shape of the sitting cushion itself, which among other things is configured with a front edge which is rounded-off forwards/downwards, together with a rounding-off starting in the centre of the front edge and rounding-off towards the rear edge of the seat, increasing towards the sides of the seat.
  • This rounding-off contributes to the users being able in an easy manner to adapt their different sitting/standing positions to the actual working situation, without the corners or the edges of the sitting cushion causing discomfort or pinching on the back of thighs and/or calves.
  • By avoiding pinching or pressure on the back of thighs and/or calves a more free circulation of blood in the user's legs is ensured, whereby an increased level of comfort is achieved.
  • this seat there is the comfort that between the upholstery of the seat and the seat platform, which forms the underside or bottom of the seat, a cavity is formed which serves as ventilation for the seat during use, whereby e.g. moist air is led away from the upholstery, which is preferably of spongy material such as foam rubber or the like.
  • the ventilation arrangement is effective with normal use of the chair, i.e. when a person/user sits down on and gets up from the chair.
  • the material on the seat cushion is preferably a natural product, such as wool or the like, which allows permeation of (moist) air.
  • wool has the characteristic that it is comfort regulating in itself, i.e. it accommodates temperature and humidity, so that these are in balance with that textile, which separates the skin of the user from the upholstery, or with the naked skin.
  • the material also allows permeation of air (moist) to the padding foam.
  • the upholstery chamber is aired more quickly due to the shorter distance that the air-must pass, in that one or more airing holes are placed in the seat platform in a substantially central manner.
  • this ventilating effect can possibly be reinforced by a non-return valve under/in the seat platform and by a surface-treatment of the foam.
  • the chair comprises a frame with a number of castors (not shown), a support column 3, conical parts 4 or other form of releasable fixed connection between the support column 3 and a carrier bracket comprising an inner part 1 and an outer part 2, which can be tilted in relation to each other.
  • the bracket's inner part or support element 1 is fixedly connected to the support column 3 in a releasable manner and constitutes the stationary part of the bracket 1, 2.
  • the support column 3 can be a gas cylinder or other form of height-adjustable support column.
  • a number of lugs or segments 7 are secured by means of a number of securing elements 10, 11, and are herewith also stationary in relation to the support column.
  • the outer element 2 tilts around the axle 6 in relation to the support element 1, which is stationary.
  • a back support yoke 12 is hinged with the outer element 2 in a back support link 15 by means of a securing element 13 and can turn around this.
  • the movement of the back support yoke 12 is controlled by one or more elongated link parts 14, which connect the back support yoke 12 with the support element 1.
  • the link part 14 is pivotally connected to the support element 1 and to the back support link 15.
  • the free end of the back support yoke 12 is surrounded by a tubular element 18, which is arranged to be able to slide in its lengthways direction and thus constitute a form of height adjustment for a backrest 19.
  • the height of the backrest 19 is maintained by means of a holding arrangement 20, which can be in the form of a clamping screw, spring-loaded pin/hole connection or the like.
  • the backrest 19 is pivotally secured in a pivot point 21, so that it is possible to turn the backrest 19 approx. 180° around the pivot point 21, and in such a way that by turning the backrest approx.
  • this can be used as underlayer/support for the forearms and/or elbows when the user sits on the chair in reversed manner, which provides a relaxed sitting position, e.g. in listening situations, alternation of sitting positions at a keyboard and the like.
  • the movement of the backrest 19 can be described as a translation, whereby the back support yoke 12 is both moved and turned in relation to the starting point.
  • the translation is controlled by four movement centres consisting respectively of the tilt point 6 of the seat 5, the securing element 13 and pivot points 16, 17 for the elongated link part 14.
  • the tilt point 6 and the pivot point 16 are stationary pivot points in relation to the support element 1, while the securing element 13 for the backrest link 15 is moved in an arc around the tilt point 6, and the pivot point 17 is moved in an arc around the pivot point 16 with a radius corresponding to the distance determined by the elongated link part 14.
  • the securing element 13 and pivot point 17 have a constant distance between them, since they are both placed on the back support link 15, and the pivot point 17 will describe a relative movement in the form of an arc around the point 13.
  • the backrest 19 is hereby moved following a geometry, which provides a special relationship between the angle of the seat 5 and the angle of the back support yoke 12, so that the angle that the elongated part of the back support yoke 12 assumes in relation to the vertical can be described as a function of the angle of the seat 5 in relation to the horizontal.
  • the backrest 19 moves forwards only a small amount, and thus the angle between the seat and the backrest is made larger or is opened.
  • the backrest 19 With horizontal seat, the backrest 19 is almost upright and thus the seat/backrest angle is essentially approx. 90°.
  • the seat/backrest angle With the seat 5 tilted all the way backwards in relation to the horizontal position, the seat/backrest angle will similarly be almost unchanged in relation to the horizontal.
  • the seat angle is locked by a form of segment coupling system, where a threaded part or screw 9 sits firmly in the outer element 2 and is influenced by a spring element (not shown), which presses around the segments or the lugs 7 and a number of segment disks 8.
  • a spring element not shown
  • the spring element is loosened by means of a release handle (not shown) on the side of the outer element 2, and the seat 5 can be tilted.
  • the segment disk 8 sits around the securing arrangement 10 and around the screw 9 and, when the seat 5 is tilted, the segment 8 will tilt with it.
  • the screw 9 can thus slide in the curved slot in the segment 7.
  • a cavity 22 is formed between a foam material 23 and a so-called sitting platform 24, which forms the underside of the seat 5.
  • the cavity 22 is preferably placed centrally in relation to the sitting platform 24, so that the cavity 22 is substantially demarcated by the user's buttocks and thighs.
  • a number of holes 25 for a through-flow of air to and from the seat 5 can with advantage be placed centrally in the sitting platform 24 to provide the air with the shortest flow-path during ventilation.
  • An upholstery fabric 26, preferably of slip-proof material, is placed over the foam material 23.
  • the foam layer 23 and the cavity 22 are pressed together, whereby the air, which is in the seat 5, is pressed out through the holes 25 in the sitting platform 24.
  • the unloaded state new air is sucked in, partly through the holes 25 and partly through the surface of the seat 5 and the surface of the foam layer 23.
  • the sitting platform 24 can be further provided with mounting holes 27 for mounting on the bracket 1, 2 and for mounting of not-shown operating handles.
  • the seat can with advantage be upholstered with slip-proof material or fabric.

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)

Claims (8)

  1. Stuhl mit einem unteren Rahmen, der vorzugsweise mehrere einzeln schwenkbare Laufrollen aufweist, einer zentralen, höhenverstellbaren Stützsäule (3), die an ihrem unteren Ende an dem Rahmen befestigt ist, und die an ihrem oberen Ende an eine Trägerkonsole angeschlossen ist, die einen inneren Abschnitt (1), der bezüglich der Stützsäule fixiert ist, und einen äußeren Abschnitt (2), der bezüglich des inneren Abschnitts bewegbar ist, aufweist, und an deren äußerem Abschnitt ein Sitz (5) und eine Rückenstütze (19) befestigt sind, wobei der Sitz um einen Drehpunkt (6) in der Trägerkonsole gekippt werden kann, und wobei der Sitz während des Kippens durch ein oder mehrere Verbindungsglieder die Bewegung der Rückenlehne abhängig von der Neigung des Sitzes führt, dadurch gekennzeichnet, daß die Höhe der Rückenlehne (19) bezüglich des Drehpunkts (6) des Sitzes (5), gesehen in einer zum Sitz (5) rechtwinkligen Richtung, mehr oder weniger konstant ist, und daß eine Ebene durch die Stützfläche der Rückenlehne (19) und eine Ebene durch die Sitzfläche des Sitzes (5) einen Winkel einschließen, der in einer Endphase des Vorwärtskippens des Sitzes (5) in bezug auf den Winkel in der normalen Position des Sitzes (5) vergrößert ist.
  2. Stuhl nach Anspruch 1, dadurch gekennzeichnet, daß der Winkel, der durch die Ebenen gebildet ist, die jeweils durch die Rückenlehne (19) und den Sitz (5) verlaufen, beim Kippen von einem Bereich um die normale Sitzposition und bis zum maximalen Rückwärtskippen mehr oder weniger konstant bleibt.
  3. Stuhl nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Drehpunkt (6) des Sitzes (5) und ein Drehpunkt (16) des inneren Abschnitts (1), zu dem ein längliches Verbindungsglied (14) eine Verbindung zum Bewegen der Rückenlehne (19) bildet, stationäre Drehpunkte bezüglich des Stützelements (1) sind, so daß ein Befestigungselement (13) für die Rückenstützverbindung (15) in einem Bogen um den Drehpunkt (6) des Sitzes (5) bewegt wird, und ein an der Rückenstützverbindung (15) befestigter Drehpunkt (17) in einem Bogen um den Drehpunkt (16) mit einem Radius bewegt wird, der einem durch ein längliches Verbindungsglied (14) bestimmten Abstand entspricht.
  4. Stuhl nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß die Neigung des Sitzes (5) durch eine Klemmanordnung (7, 8, 9) angepaßt werden kann.
  5. Stuhl nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Sitz (5) in seiner Längsrichtung verstellbar ist.
  6. Stuhl nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Sitz (5) eine Sitzplattform (24) aufweist, auf der ein federndes Schaummaterial (23) befestigt ist, wobei dazwischen ein im wesentlichen zentraler Hohlraum (22) gebildet ist.
  7. Stuhl nach Anspruch 6, dadurch gekennzeichnet, daß mehrere Löcher (25) in der Sitzplattform (24) zur Belüftung des Stuhls gebildet sind.
  8. Stuhl nach Anspruch 7, dadurch gekennzeichnet, daß ein oder mehrere Belüftungslöcher (25) in der Sitzplattform (24) in im wesentlichen zentraler Weise angeordnet sind.
EP00954399A 1998-09-18 2000-08-23 Ergonomischer stuhl Expired - Lifetime EP1211966B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK199901175A DK176630B1 (da) 1997-09-19 1998-09-18 Ergonomisk stol
WOPCT/DK99/01175 1999-08-24
PCT/DK2000/000465 WO2001013765A1 (en) 1998-09-18 2000-08-23 Ergonomic chair

Publications (2)

Publication Number Publication Date
EP1211966A1 EP1211966A1 (de) 2002-06-12
EP1211966B1 true EP1211966B1 (de) 2006-06-14

Family

ID=8101848

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00954399A Expired - Lifetime EP1211966B1 (de) 1998-09-18 2000-08-23 Ergonomischer stuhl

Country Status (3)

Country Link
EP (1) EP1211966B1 (de)
AU (1) AU6686500A (de)
WO (1) WO2001013765A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108926154A (zh) * 2018-07-18 2018-12-04 鲁陈 一种可自矫正坐姿的座椅

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2915368A1 (de) * 1979-04-14 1980-10-30 Link Wilhelm Kg Buerostuhl
ATE21613T1 (de) * 1983-01-21 1986-09-15 Pierre Schmitz Stuhl, insbesondere buerostuhl.
CH668541A5 (de) * 1986-01-07 1989-01-13 Provenda Marketing Ag Arbeitsstuhl, insbesondere zur verwendung als buerostuhl.
EP0698358A3 (de) * 1994-08-17 1996-06-19 Ashfield Eng Co Wexford Ltd Kippmechanismus für einen Stuhl

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108926154A (zh) * 2018-07-18 2018-12-04 鲁陈 一种可自矫正坐姿的座椅
CN108926154B (zh) * 2018-07-18 2021-04-06 深圳市谷奇创新科技有限公司 一种可自矫正坐姿的座椅

Also Published As

Publication number Publication date
WO2001013765A1 (en) 2001-03-01
AU6686500A (en) 2001-03-19
EP1211966A1 (de) 2002-06-12

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