EP0397661B1 - Chaise, notamment chaise de travail ou de bureau - Google Patents

Chaise, notamment chaise de travail ou de bureau Download PDF

Info

Publication number
EP0397661B1
EP0397661B1 EP88909998A EP88909998A EP0397661B1 EP 0397661 B1 EP0397661 B1 EP 0397661B1 EP 88909998 A EP88909998 A EP 88909998A EP 88909998 A EP88909998 A EP 88909998A EP 0397661 B1 EP0397661 B1 EP 0397661B1
Authority
EP
European Patent Office
Prior art keywords
slider
backrest
rest
seat
spring
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
EP88909998A
Other languages
German (de)
English (en)
Other versions
EP0397661A1 (fr
Inventor
Siegfried Keusch
Günter Kratz
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.)
Haworth Buroeinrichtungen GmbH
Original Assignee
Roeder 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 Roeder GmbH filed Critical Roeder GmbH
Priority to AT88909998T priority Critical patent/ATE77217T1/de
Publication of EP0397661A1 publication Critical patent/EP0397661A1/fr
Application granted granted Critical
Publication of EP0397661B1 publication Critical patent/EP0397661B1/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
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03238—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 means of peg-and-notch or pawl-and-ratchet mechanism
    • 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
    • A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
    • 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—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back

Definitions

  • the invention relates to a chair, in particular a work or office chair, with a backrest bar that can be changed in inclination relative to the seat and a backrest that can be adjusted thereon by means of a slide or the like, the slide or the like Backrest bar is slidable towards the seat.
  • the known chairs of this type offer excellent seating comfort, since on the one hand they provide clear support for the back of the user in the starting or working position thanks to the practically vertical position of the backrest, but on the other hand they allow relaxed sitting after the backrest bar has been tilted backwards.
  • the backrest bar When the backrest bar is tilted backwards, the upper body of the user does not simply make a swiveling movement, but rather a movement superimposed from various movement components results. Since the backrest performs an additional downward movement towards the seat when the backrest bar is tilted backwards, a relative movement between the back of the user and the backrest is avoided or at least reduced to an undetectable value
  • the backrest is connected to a slide or the like, which is additionally adjustable in or on the slide or the like via a predetermined adjustment path and can be fixed in several positions
  • the adjustment device has only a single toggle lever , which is mounted on a bearing bracket supporting the seat or on a seat bracket which can be changed in inclination about a horizontal pivot axis, such that an extension of the backrest is articulated to the end of one lever arm of the toggle lever, and that the end of the other lever arm of the toggle lever can be pivoted by means of a driving pin or the like of the backrest bar and / or the seat support in such a way that when the backrest bar is tilted back and / or the seat support is lowered one lever arm of the toggle lever adjusts the extension and thus the backrest in the direction of the pedestal or seat support.
  • the actuating device comprises only a single toggle lever, which takes over the disproportionate change in the inclination of the backrest bar when changing the inclination of the seat and at the same time ensures a relative movement between the backrest and the seat, which avoids the pull-out effect.
  • the backrest with the slide or the like can be influenced via a separate adjustment path without influencing the adjustment path of the slide or the like, which is carried out automatically via the adjustment device a basic setting can be brought that is adapted to the body size of the user.
  • the anatomical design of the backrest therefore comes into full effect for every user regardless of their body size and with a relatively small additional effort.
  • the locking position between the locking pin and the slide or the like After releasing the button, the locking position between the locking pin and the slide or the like. Then sets itself automatically if it is provided that the button is supported on the slide or the like by means of an elastic element as a return spring and with extensions to behind the spring in the highest position of the backrest and thus the slide or the like.
  • an elastic element as a return spring and with extensions to behind the spring in the highest position of the backrest and thus the slide or the like.
  • a particularly advantageous embodiment is characterized in that the spring is designed as a U-shaped leaf spring which laterally surrounds the slide or the like with its side legs and with its transverse leg on the side of the slide or the like facing the seat or on the backrest facing side of the slider or the like. And that the button on the side facing away from the backrest of the backrest bar is arranged outside the adjustment path of the backrest. The button is then always easily accessible and the spring with the locking pin is easy to accommodate in the backrest bar.
  • the locking force is transmitted symmetrically and uniformly to the locking pin if the configuration is such that the locking pin is attached centrally to the cross leg of the spring and protrudes toward the slide or the like. This and that the series of holes in the slide or the like. are introduced in the center at regular intervals.
  • the adjustment path of the slide or the like in or on the slide or the like is limited by stops which are preferably attached to the slide or the like.
  • the engagement of the locking pin in a bore of the slide or the like is improved in that there: the free end of the locking pin runs into an insertion tip, an insertion cone stump or the like.
  • the adjusting device for the slide or the like is preferably designed so that the adjusting device has only a single toggle lever which is pivotally mounted on a bearing bracket or on the bracket of the bearing bracket in the inclination changeable about a horizontal pivot axis that an extension the backrest is connected in an articulated manner to the end of one lever arm of the toggle lever, and that the end of the other lever arm of the toggle lever can be pivoted by means of a driving pin or the like of the backrest bar and / or the seat support in such a way that when the backrest bar is tilted back and / or lowered of the seat support one lever arm of the toggle lever adjusts the extension and thus the backrest in the direction of the bearing block or seat support.
  • FIGS. 1 and 2 shows a chair in which the backrest bar 6 can be pivotally mounted on the bearing block 2 or the seat support 33.
  • the representation is only limited to the parts that are required for the adjustment of the backrest in a basic setting and the automatic adjustment of the backrest in or on the backrest bar.
  • Fig. 1 shows an adjustment device with the toggle lever 20, which can be pivotally mounted both on the fixed bearing block 2 of a chair and on the seat support 33 which can be changed in inclination relative to the bearing block 2.
  • the slider 5 is guided in an adjustable manner, damping elements 7 preventing or damping adjustment noises.
  • the slide 10 is guided on the slide 5 in an adjustable manner.
  • the carriage 10 carries the horizontally directed tube section 9 to which the backrest 35, not shown, is attached.
  • the spring 8 Arranged between the slide 5 and the slide 10 is the spring 8 designed as a U-shaped leaf spring, which laterally encloses the slide 10 with its side legs and is supported with its transverse leg below the slide 10 on the side of the slide 5 facing the backrest 35.
  • the slider 5 carries in the middle a series of holes 37 which are made at regular intervals.
  • the cross leg of the spring 8 carries in the middle the locking bolt 11, which protrudes in the direction of the slider 5 thereon and preferably runs out at the free end into an insertion tip, an insertion truncated cone or the like, so that it can more easily engage in a bore 37 of the slider 5.
  • the button 12 On the side facing away from the backrest 35, the button 12 is installed in the backrest bar 6, specifically outside the adjustment range of the backrest, which is the Enclose backrest bar 6 and can accommodate in one shot.
  • the key 12 is raised with two extensions to the side of the slide 5 and engages behind the spring 8 even when the slide 10 is in its highest position on the slide 5.
  • the spring 8 By pressing the button 12, the spring 8 can therefore be deflected via the extensions and the locking connection between the locking pin 11 and the slider 5 can be canceled.
  • the slide 10 with the backrest is then adjustable on the slide 5 until the locking pin 11 engages again in a bore 37 of the slide 5 after the button 12 is released.
  • the adjustment path of the slide 10 on the slide 5 is limited to a predetermined value, specifically by stops of the slide 5, which can be designed, for example, as pins inserted into bores. By stopping the slider 10 on these pins, the adjustment path of the sled 10 on the slide 5 is fixed.
  • This additional adjustability of the backrest on the slider 5, which is automatically adjusted even in or on the backrest bar 6 when the backrest bar 6 is tilted backward, permits a basic adjustment of the backrest when the backrest bar 6 is erected steeply and thus an adaptation of the anatomically designed backrest to the body size of the user, in order to obtain the optimal seating comfort adapted to the body size of the user in all positions of the backrest bar 6.
  • the button 12 is supported on the slide 5 by means of the elastic element 21, which can be designed, for example, as a foam block covered by adhesive film 18.
  • This elastic element 21 acts as a return spring, which resets the key 12 after release.
  • the spring 8 is released for engaging the locking pin 11 in a bore 37 of the slide 5.
  • the adjusting device for the slide 5 is designed in the exemplary embodiment as a toggle lever 20 which is rotatably mounted with the pivot axis 19 embodied as a bearing pin on the fixed bearing block 2 or on a pivotable on the bearing block 2 and the inclination of the seat support 33.
  • the bearing pin is mounted in the side legs of the bearing block 2 or seat bracket 33 which is U-shaped in cross section.
  • the opening 32 provides space for the toggle lever 20 so that the overall height can be kept small.
  • the backrest bar 6 is also provided with side legs and is open towards the backrest.
  • the bearing block 2 or the seat support 33 protrudes between the side legs of the backrest bar 6 and is rotatably mounted therein with the pivot axis 16 designed as a bearing pin.
  • the bearing block 2 or the seat support 33 has in the bearing area the recess 31 through which the extension 17 is inserted and is articulated on the hinge pin 22 by means of the bearing sleeve 24.
  • the hinge pin 22 is arranged at the end of a lever arm 28 of the toggle lever 20 which, in the initial position of the chair, ie with the backrest bar 6 erected steeply, such as the bearing block 2 or the seat support 33, runs approximately horizontally.
  • the driving pin 25 is fixed, which is received by the sliding block 26.
  • the sliding block 26 is adjustably guided in the guide slot 27 of the other lever arm 29 of the toggle lever 20.
  • the extension 17 is a separate part which is firmly connected to the slide 5 by means of the connecting lug 23, the screw 15 and the spring ring 14.
  • the driver pin 25 of the backrest rod 6 describes the movement path 36 when pivoting, which lies on a circular path around the pivot axis 16.
  • the other lever arm 29 of the toggle lever 20 is pivoted in the same direction by the driving pin 25.
  • the distance of the driving pin 25 from the pivot axis 19 of the toggle lever 20 changes.
  • the driving pin 25 received by the sliding block 26 is guided in a longitudinally adjustable manner in the guide slot 27 of the other lever arm 29 of the toggle lever 20 in order to carry out its pivoting movement on the movement path 36 unhindered to be able to.
  • the driving pin 25 is additionally adjustably guided in the guide slots of the fixed bearing block 2.
  • the cover 13 covers a part of the open side of the backrest bar 6 outside the adjustment range of the slide 10.

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)
  • Special Chairs (AREA)

Claims (7)

1. Chaise, notamment chaise de travail ou de bureau, avec une tige de dossier à inclinaison variable par rapport au siège et avec un dossier réglable sur cette tige par l'intermédiaire d'un coulisseau ou similaire, le coulisseau ou similaire étant, par l'intermédiaire d'un dispositif de réglage prévu dans ou sur la tige de dossier, coulissé en direction du siège lorsque la tige de dossier est inclinée vers l'arrière,
caractérisé
en ce que le dossier est relié à un chariot (10) ou similaire, lequel en complément peut être bloqué dans plusieurs positions dans ou sur le coulisseau (5) ou similaire le long d'un trajet de réglage prédéterminé , en ce que le dispositif de réglage ne présente qu'un seul levier à genouillère (20), lequel est monté à pivotement autour d'un axe d'articulation (19) horizontal sur un support (2) portant le siège ou sur un porte-siège (33) à inclinaison variable monté sur le support (2),
en ce qu'un prolongement (17) du dossier (35) est articulé sur l'extrémité d'un bras de levier (28) du levier à genouillère (20)
en ce que l'extrémité de l'autre bras de levier (29) du levier à genouillère (20) peut, au moyen d'une broche d'entraînement (25) ou similaire de la tige de dossier (6) et/ou du porte-siège (33), être pivotée de manière telle que lors de l'inclinaison vers l'arrière de la tige de dossier (6) et/ou lors de l'abaissement du porte-siège, un bras de levier (28) du levier à genouillère (20) déplace le prolongement (17) et dès lors le dossier (35) endirection du support (2) ou du porte-siège (33).
2. Chaise suivant la revendication 1,
caractérisée
en ce que sur le chariot (10) ou similaire est monté un ressort (8) avec une broche d'encliquetage (11), laquelle peut être encliquetée dans l'une des plusieurs forures (37) du coulisseau (5) ou similaire, et
en ce qu'au moyen l'un poussoir (12), disposé dans la tige de dossier (6), le ressort (8) peut être soulevé de telle sorte que la liaison par encliquetage entre la broche d'encliquetage (11) et le coulisseau (5) ou similaire est supprimée.
3. Chaise suivant l'une ou l'autre des revendications 1 ou 2,
caractérisée
en ce que le poussoir (12) s'applique au moyen d'un élément élastique (21) faisant office de ressort de rappel sur le coulisseau (5) ou similaire et est, au moyen de prolongements, guidée jusqu'à derrière le ressort (8) dans la position la plus haute du dossier et dès lors du chariot (10) ou similaire.
4. Chaise suivant l'une quelconque des revendications de 1 à 3,
caractérisée en ce que
le ressort (8) a la forme d'une lame de ressort en forme de U, dont les ailes latérales enserrent latéralement le chariot (10) ou similaire et dont la traverse est, du côté du chariot (10) ou similaire orienté vers le siège, appliquée sur le côté du coulisseau (5) orienté vers le dossier, et en ce que le poussoir (12) est, du côté de la tige de dossier (6) qui n'est pas orienté vers le dossier, situé en dehors du trajet de réglage du dossier.
5. Chaise suivant l'une quelconque des revendications de 1 à 4,
caractérisée en ce que
la broche d'encliquetage (11) est disposée au milieu de la traverse du ressort (8) et fait protubérance à partir de cette traverse en direction du poussoir (5) ou similaire, et en ce que la série de forures (37) pratiquées dans le coulisseau (5) ou similaire est située au milieu de celui-ci à des distances uniformes les unes des autres.
6. Chaise suivant l'une quelconque des revendications de 1 à 5,
caractérisée en ce que
le trajet de réglage du chariot (10) ou similaire dans ou sur le coulisseau (5) ou similaire est limité au moyen de butées, en particulier du coulisseau (5) ou similaire.
7. Chaise suivant l'une quelconque des revendications de 1 à 6, caractérisée en ce que
l'extrémité libre de la broche d'encliquetage (11) se termine par une pointe d'introduction, un tronc de cône d'introduction ou similaire.
EP88909998A 1987-12-29 1988-12-03 Chaise, notamment chaise de travail ou de bureau Expired - Lifetime EP0397661B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88909998T ATE77217T1 (de) 1987-12-29 1988-12-03 Stuhl, insbesondere arbeits- oder buerostuhl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3744363 1987-12-29
DE19873744363 DE3744363A1 (de) 1987-12-29 1987-12-29 Stuhl, insbesondere arbeits- oder buerostuhl

Publications (2)

Publication Number Publication Date
EP0397661A1 EP0397661A1 (fr) 1990-11-22
EP0397661B1 true EP0397661B1 (fr) 1992-06-17

Family

ID=6343761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88909998A Expired - Lifetime EP0397661B1 (fr) 1987-12-29 1988-12-03 Chaise, notamment chaise de travail ou de bureau

Country Status (7)

Country Link
US (1) US5100200A (fr)
EP (1) EP0397661B1 (fr)
JP (1) JPH03502170A (fr)
AT (1) ATE77217T1 (fr)
CA (1) CA1332146C (fr)
DE (2) DE3744363A1 (fr)
WO (1) WO1989006099A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3744365C3 (de) * 1987-12-29 1994-04-14 Roeder Gmbh Stuhl, insbesondere Arbeits- oder Bürostuhl
DE3838999A1 (de) * 1988-11-18 1990-05-23 Roeder Gmbh Stuhl, insbesondere arbeits- oder buerostuhl
US5613734A (en) * 1996-02-08 1997-03-25 Bassett Furniture Ind. Inc. Chair with vertically adjustable back
US5707108A (en) * 1996-12-04 1998-01-13 Pi; Ching-Tien Cushioning device
US6007150A (en) 1998-03-08 1999-12-28 Milsco Manufacturing Company Motorcycle seat with adjustable backrest
US6616232B2 (en) * 2001-06-12 2003-09-09 Hms Seating Inc. Tiltable spring-biased chair
MY134768A (en) * 2002-01-17 2007-12-31 Green Continental Furniture M Sdn Bhd A dining chair with reclining mechanism
DE602004004359T2 (de) * 2004-01-26 2007-08-23 Pro-Cord S.P.A. Stuhl mit kippbarer Rückenlehne
US7237841B2 (en) * 2004-06-10 2007-07-03 Steelcase Development Corporation Back construction with flexible lumbar
US7458637B2 (en) * 2004-06-10 2008-12-02 Steelcase Inc. Back construction with flexible lumbar
US7396079B2 (en) * 2005-03-08 2008-07-08 Steelcase Inc. Seating with shape-changing back support frame
WO2016074723A1 (fr) * 2014-11-13 2016-05-19 L&P Property Management Company Mécanisme d'inclinaison pour siège sensible au poids
US9596941B1 (en) 2016-02-02 2017-03-21 Office Master Inc. Chair back with height and lumbar adjustment
US9848707B1 (en) * 2016-07-28 2017-12-26 Ergo-Industrial Seating Systems, Inc. Telescoping mechanism
EP3508095B1 (fr) * 2016-09-01 2021-02-24 UE Furniture Co., Ltd Structure de chaise et chaise
USD904099S1 (en) * 2018-06-22 2020-12-08 P.S. Pibbs, Inc. Reclining mechanism for a threading chair

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992855A (en) * 1959-06-01 1961-07-18 Harvey H Mohler Chair with adjustable back
DE8025516U1 (de) * 1980-09-24 1981-01-15 Zapf, Otto, 6240 Koenigstein Sitzmoebel
DE3038880C2 (de) * 1980-10-15 1985-05-02 Martin Stoll GmbH, 7890 Waldshut-Tiengen Vorrichtung zur stufenweisen Abstandsverstellung von zwei Stuhlteilen
DE3152945C1 (de) * 1981-08-19 1987-06-19 Giroflex Entwicklungs Ag Stuhl mit schwenkbaren Sitz und relativ dazu schwenkbarer Rueckenlehne
US4536031A (en) * 1983-06-10 1985-08-20 Knoll International, Inc. Back support control mechanism for a chair or the like
CH666171A5 (de) * 1984-10-03 1988-07-15 Giroflex Entwicklungs Ag Stuhl mit rueckwaerts neigbarem sitz- und rueckenlehnentraeger.
IT1183571B (it) * 1985-05-08 1987-10-22 Fantoni Arredamenti Spa Struttura di poltronicina e/o sedia anatomica a piu' posizioni
US4616877A (en) * 1985-05-09 1986-10-14 Kimball International, Inc. Chair with back height adjustment
US4632458A (en) * 1985-05-20 1986-12-30 Fixtures Manufacturing Corporation Chair back height adjustment mechanism
DE8627648U1 (de) * 1986-10-16 1988-09-01 Dauphin F W Buerositzmoebel Stuhl, insbesondere Bürostuhl, mit höhenverstellbarer Rückenlehne

Also Published As

Publication number Publication date
DE3872258D1 (de) 1992-07-23
US5100200A (en) 1992-03-31
DE3744363A1 (de) 1989-07-13
ATE77217T1 (de) 1992-07-15
WO1989006099A1 (fr) 1989-07-13
CA1332146C (fr) 1994-09-27
DE3744363C2 (fr) 1990-05-17
JPH03502170A (ja) 1991-05-23
EP0397661A1 (fr) 1990-11-22

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