EP0784952B1 - Chaise, notamment chaise de bureau - Google Patents

Chaise, notamment chaise de bureau Download PDF

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Publication number
EP0784952B1
EP0784952B1 EP97100566A EP97100566A EP0784952B1 EP 0784952 B1 EP0784952 B1 EP 0784952B1 EP 97100566 A EP97100566 A EP 97100566A EP 97100566 A EP97100566 A EP 97100566A EP 0784952 B1 EP0784952 B1 EP 0784952B1
Authority
EP
European Patent Office
Prior art keywords
seat
backrest
chair
guide
joint
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
EP97100566A
Other languages
German (de)
English (en)
Other versions
EP0784952A1 (fr
Inventor
Peter Horn
Armin Sander
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.)
ITO DESIGN ARMIN SANDER
Original Assignee
ITO Design Armin Sander
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 ITO Design Armin Sander filed Critical ITO Design Armin Sander
Publication of EP0784952A1 publication Critical patent/EP0784952A1/fr
Application granted granted Critical
Publication of EP0784952B1 publication Critical patent/EP0784952B1/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
    • A47C1/03294—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
    • 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
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil 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 relates to a chair, in particular office chair, with the Features of the preamble of claim 1.
  • a chair in particular office chair, with the Features of the preamble of claim 1.
  • the backrest tilt adjustable.
  • the backrest is inclined continuously adjustable and in one or more inclination positions also lockable.
  • the seat is also adjustable inclination.
  • the inclination of the seat is adjusted using an the backrest swivel mechanism kinematically coupled, the seat inclination mechanism controlling synchronous mechanism.
  • the backrest tilts Adjacent rear area of the seat by one behind the front edge of the seat and pivot point located below the seat down. Because of this arrangement of the swivel raises that facing away from the backrest front area of the seat. So the seat is around that in the area the swivel joint arranged at the front edge is pivoted by a certain distance.
  • the seat surface is rotated away from the hip joint and the backrest and then sitting deeper into the seat so-called "shirt pull-out effect".
  • the backrest springs back into the The starting position is the shirt of the person sitting in the chair pushed up and pulled out of the skirt or trousers waistband.
  • the invention is based on the object generic chairs, especially office chairs, with regard to their synchronous mechanism to improve. This task is due to the combination of features of the Claim 1 solved.
  • the invention is based on the anatomical finding that pivoting the torso against the thighs by means of the hip joint. It would be obvious, therefore, to be in line with the axis of rotation of the hip joint. To arrange the swivel as a backrest swivel mechanism. Such an arrangement is known for example by the under the label "Aeron TM distributed office chair from the company Herman Miller.
  • the basic idea of the invention is the synchronous mechanism as a coupling gear to be designed with four links.
  • Such coupling gears are, for example known from “W. Krause, construction elements of precision engineering, 2nd edition, Carl Hanser Verlag, ISBN 3-446-16530-4, p. 724 ".
  • This takes place in principle a four-swivel chain application the associated with the hip joint Swivel joint by using a push crank chain (see W. Krause a.a.O. Table 13.11.2) is substituted by a sliding joint.
  • This below the To a certain extent creates a pushrod arranged in the hip joint of the person sitting there a "virtual hip joint" in the synchronous mechanism.
  • the thrust joint in this way couples the seat surface or the seat inclination mechanism directly to the backrest or backrest swivel mechanism.
  • the pivot point of the thrust joint is approximately congruent with the swivel joint of the Hip joint.
  • the transmission ratio between backrest and seat is 2: 1 to for 3: 1.
  • the attachment of the virtual joint also causes a constant Height of the ankle and thus prevents the soles of the feet from lifting off from the floor.
  • the angle in the knee described by the calf and thigh remains constant or increases with increasing backrest inclination is enlarged.
  • the proposed four-link coupling gear is in its construction simple and fulfills all kinematic requirements for the construction.
  • Claims 2 and 4 relate to advantageous refinements of both the backrest pivoting mechanism as well as the seat tilt mechanism. Both mechanics are structurally simple and are also common can easily be combined to form a sliding crank chain.
  • Claim 4 relates to an advantageous embodiment of the sliding joint.
  • the big ones Guide surfaces promote a low-play and safe function of the push joint.
  • Claims 5 and 6 relate to an alternative embodiment of the sliding joint.
  • Claim 7 relates to a structurally simple configuration of the reset mechanism for both the backrest swivel mechanism and the seat inclination mechanism.
  • the inventive chair consists essentially of the backrest 1, the Seat 2 and the bogie 3.
  • the bogie 3 consists of a base 4 with five arms arranged in a star shape. 5.
  • a roller 6 is attached at the outer end of each Arms 5 . With the help of the rollers 6, the chair is open at will movable on the floor. In the direction of the vertical axis of the chair (Axial direction 7) protrudes from the frame base 4 of the frame stand 8.
  • the Rack stand 8 supports the seat surface 2 and the backrest 1.
  • the backrest 1 In its upright inclination, the backrest 1 is essentially in that of the axial direction 7 and that extending at right angles to the axial direction 7 Transverse direction 9 spanned plane.
  • the seat 2 runs in its upright Tilt position in the from the transverse direction 9 and both to the transverse direction 9 and the longitudinal direction 10 running at right angles to the axial direction 7 spanned level.
  • Both the seat 2 and the backrest 1 are with the interposition of the synchronous mechanism mounted on the frame stand 8.
  • To support the backrest 1 are in the illustrated embodiment two backrest levers 11 with their backrest free ends 12 fixed to the backrest 1 connected.
  • the backrest levers 11 run in the longitudinal direction 10 and are with their the lever-free ends 13 facing away from the back-free ends 12 by means of one in the transverse direction 9 extending lever shaft 14 connected to each other.
  • the lever shaft 14 is an element of a backrest hinge 15 fixed to the frame stand 8
  • Backrest 1 is consequently by means of the backrest lever 11 on the backrest pivot joint 15 stored and with the help of the backrest hinge 15 relative to the frame stand 8 in the illustrated in FIGS. 2 and 3, from the longitudinal direction 10 and the Axial direction 7 spanned plane pivotable.
  • the pivot arrow 16 indicates this is shown schematically in FIGS. 2 and 3.
  • the seat surface 2 is in the longitudinal direction 10 by means of the backrest pivot joint 15 adjacent seat swivel 17 is tilt-mounted on the frame stand 8.
  • the seat 2 rests on a seat stool.
  • the seat stool is pivotable on a seat link 19 by means of a pivot hinge 18 stored.
  • two are facing away from the seat 2
  • Seat ends 19 connected to free ends connected to a control shaft 20 available.
  • the link shaft 20 is in this case an element of the seat pivot joint 17 Element pairs.
  • the pivot joints 18 are arranged.
  • Both seat handlebars 19 are by means of the swivel joints 18, each with a seat stool connected.
  • the inclination of the seat 2 is done by an up and down movement of the seat link 19 in the longitudinal direction 10 and the axial direction 7 spanned plane. This tilting movement the seat 2 is indicated graphically by the inclination arrow 21.
  • the link between the essentially from the backrest levers 11 and the Backrest swivel 15 existing backrest swivel mechanism and in essentially from the seat link 19, the pivot hinge 18 and the Seat swivel 17 existing seat inclination mechanism forms the prismatic slide guide designed thrust joint 22.
  • the thrust joint 22 is in the 1, 2, 3 and 4, the embodiment shown is an arc Prismatic slide guide.
  • This prism slide guide consists of a Double joint bow.
  • a portion of the backrest lever 11 is for this purpose bowl-shaped guide pan 23 formed. In this curved guide pan 23 is slidably mounted in the pivoting direction 24 at the same time the arched guide stool forming the seat surface stool 25.
  • the arched Guide pan 23 and the curved guide stool 25 form in Embodiment consequently the double articulated bow according to claim 4.
  • the guide stool 25 is also by means of the boom 26 via the pivot hinge 18 connected to the seat link 19.
  • the boom 26 and the seat link 25 thus form the pair of elements forming the pivot hinge 18.
  • the lumbar region 28 therefore does not change its relative position in relation to the backrest 1 in the lumbar region, which on the one hand favors an ergonomically correct sitting and on the other hand prevents the shirt pull-out effect described at the beginning.
  • the sliding joint 22 designed as a link guide
  • the sliding joint 22 is arcuate Guide pan 23 replaced by two slot-like guide links 40, the are arranged on a virtual arc line.
  • the guide slots 40 are firmly connected to one another by means of the longitudinal rod 41.
  • the on Backrest swivel 15 pivotally mounted backrest lever 11 exists in this Example of embodiment from two partial backrest levers 11, two intermediate guide link 40 and one the guide link 40 connecting longitudinal rod 41.
  • the seat stool is provided by two on the underside of the seat surface molded axial spars 42 formed. On their seat 2 Free ends facing away from one another carry the axial spars 42 which extend in the transverse direction 9 extending guide pin 43. By displacement of the guide pin 43 in the guide link 40, the inclination of the seat 2 is adjustable.
  • the guide pin 43 is positively guided by a relative pivoting the guide link 40 as a result of the pivoting of the backrest lever 11 around the backrest pivot joint 15 when the trunk 38 is leaning back.
  • the further Connection of the Axialholm 42-guide pin 43 combination with the seat link 19 is not shown in FIG. 5.
  • the invention is based on the basic idea in the area of Hip joint 37 is a hinge joint running in line with the hip joint 37 44 to arrange.
  • This hinge joint 44 is in accordance with the invention the thrust joint 22 is substituted, the one assigned to the backrest lever 11 Lever extension 45 and the boom extension assigned to the boom 26 46 omitted in the invention.
  • the replacement of the hinge joint 44, the lever extension 45 and the boom extension 46 by the Slide joint 22 effects a virtual hinge joint of the chair in the area of the Hip joint 37.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Claims (7)

  1. Siège, en particulier siège de bureau, comprenant :
    un dossier (1) réglable en inclinaison, et
    une chaíne à bielle poussée à titre de mécanisme de synchronisation pour modifier l'inclinaison de la surface d'assise en fonction de l'angle d'inclinaison respectif du dossier,
    caractérisé en ce que
    la chaíne à bielle poussée comprend :
    quatre éléments de transmission, à savoir :
    un châssis d'assise (8),
    un levier de dossier (11),
    un bras (26), et
    un levier de surface d'assise (19),
    trois articulations en rotation, à savoir :
    une articulation de dossier (15),
    une articulation d'assise (17), et
    une articulation de sellette (18), ainsi que :
    une articulation à poussée (22) agissant à titre d'élément de liaison entre le mécanisme de basculement du dossier et le mécanisme d'inclinaison de la surface d'assise.
  2. Siège selon la revendication 1, caractérisé en ce que le mécanisme de basculement du dossier est formé par un ou plusieurs leviers de dossier (11) montés avec faculté de pivotement sur le châssis d'assise (8).
  3. Siège selon l'une ou l'autre des revendications précédentes, caractérisé en ce que le mécanisme d'inclinaison de la surface d'assise est formé par un ou plusieurs bras (19) relié(s) à la surface d'assise (2) et monté(s) en pivotement sur le châssis d'assise (8) par l'intermédiaire d'une articulation de sellette (18).
  4. Siège selon l'une ou plusieurs des revendications précédentes, caractérisé par un guidage de poussée à prisme de forme cintrée et formant un arc double d'articulation, à titre d'articulation à poussée (22).
  5. Siège selon l'une des revendications 1 à 3, caractérisé en ce que l'articulation à poussée (22) est réalisée sous forme de guidage à coulisseau, comprenant :
    au moins un coulisseau de guidage analogue à un perçage oblong (40) au niveau du mécanisme de basculement de dossier, et
    un goujon de guidage (43) mobile disposé dans le coulisseau de guidage (40), et relié au mécanisme d'inclinaison de la surface d'assise.
  6. Siège selon la revendication 5, caractérisé par deux coulisseaux de guidage (40) formant entre eux une ligne arquée, avec un goujon de guidage mobile respectif (43) disposé dans le coulisseau et relié au mécanisme d'inclinaison de la surface d'assise.
  7. Siège selon l'une ou plusieurs des revendications précédentes, caractérisé par un mécanisme de rappel, entraíné par la force d'un ressort, pour le rappel du dossier (1) dans sa position fonctionnelle redressée, et rappel simultané de la surface d'assise (2) dans sa position non inclinée.
EP97100566A 1996-01-18 1997-01-16 Chaise, notamment chaise de bureau Expired - Lifetime EP0784952B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29600821U DE29600821U1 (de) 1996-01-18 1996-01-18 Stuhl, insbesondere Bürostuhl
DE29600821U 1996-01-18

Publications (2)

Publication Number Publication Date
EP0784952A1 EP0784952A1 (fr) 1997-07-23
EP0784952B1 true EP0784952B1 (fr) 2000-03-01

Family

ID=8018212

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97100566A Expired - Lifetime EP0784952B1 (fr) 1996-01-18 1997-01-16 Chaise, notamment chaise de bureau

Country Status (2)

Country Link
EP (1) EP0784952B1 (fr)
DE (2) DE29600821U1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19900454C2 (de) 1999-01-08 2001-10-25 Andreas Struppler Stuhl, insbesondere Bürostuhl
DE10121227C1 (de) * 2001-04-30 2002-09-05 Klaus Seeliger Rückenlehnen- und Sitzflächen-Mechanismus, insbesondere für Fahrzeugsitze
US6644741B2 (en) 2001-09-20 2003-11-11 Haworth, Inc. Chair
US6945602B2 (en) 2003-12-18 2005-09-20 Haworth, Inc. Tilt control mechanism for chair

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3844102A1 (de) * 1988-12-28 1990-07-05 Sondergeld Horst Dipl Designer Sitz fuer einen buerostuhl od. dgl.
DE4209049C2 (de) * 1992-03-20 1995-05-11 Kloeber Gmbh & Co Arbeitssessel mit flachbauender Synchronmechanik
GB2271053A (en) * 1992-09-30 1994-04-06 Edward L Stulik Reclining chair
DE9300997U1 (de) * 1993-01-26 1994-05-26 Sondergeld Horst Verstellbarer Sitz
DE4331987A1 (de) * 1993-09-21 1995-03-23 Fredi Dubach Stuhl, insbesondere Bürostuhl

Also Published As

Publication number Publication date
EP0784952A1 (fr) 1997-07-23
DE59701156D1 (de) 2000-04-06
DE29600821U1 (de) 1997-05-28

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