EP0295214B1 - Chaise - Google Patents

Chaise Download PDF

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Publication number
EP0295214B1
EP0295214B1 EP88810371A EP88810371A EP0295214B1 EP 0295214 B1 EP0295214 B1 EP 0295214B1 EP 88810371 A EP88810371 A EP 88810371A EP 88810371 A EP88810371 A EP 88810371A EP 0295214 B1 EP0295214 B1 EP 0295214B1
Authority
EP
European Patent Office
Prior art keywords
backrest
seat
spindle
chair
chair according
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
EP88810371A
Other languages
German (de)
English (en)
Other versions
EP0295214A1 (fr
Inventor
Egon Bräuning
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.)
Protoned BV
Original Assignee
Protoned BV
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 Protoned BV filed Critical Protoned BV
Priority to AT88810371T priority Critical patent/ATE67381T1/de
Publication of EP0295214A1 publication Critical patent/EP0295214A1/fr
Application granted granted Critical
Publication of EP0295214B1 publication Critical patent/EP0295214B1/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
    • 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
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/445—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf springs

Definitions

  • the invention relates to seating furniture according to the preamble of the independent claim.
  • the functional coupling of seat and backrest which is referred to in the industry as "synchronous”, should be solved as far as possible in such a way that, on the one hand, the rear section of the seat adjoining the backrest is only lowered when the seated person presses the backrest backwards and that, on the other hand, the backrest, regardless of the load on the seat, maintains its vertical position as long as no direct force is exerted on it.
  • the chair shown in Fig. 1 with no essential details consists of a frame 1, a seat 2 and a backrest 3.
  • the frame 1 has essentially two approximately right-angled feet 4 formed from tubular profiles, which on the front of the chair carry a first pivot axis A1.
  • the frame also includes the lower section 3a (FIG. 2) of the backrest 3, which is connected to the feet 4 via a cross member 5 and thus forms an integral part of the frame.
  • the backrest 3 is a plastic plate 6 which extends over the entire height of the chair and which is reinforced with two longitudinal steel strips 7 which are flexibly fastened to the cross member 5 with their lower ends. Thanks to this construction, the backrest 3 has a certain elasticity, so that it yields under load and automatically resumes its original position when unloaded. As can be seen from the following Description still follows, this elastic spring action is required especially in the lower backrest section 3a.
  • the seat designated as a whole by 2
  • the seat thus forms a kind of two-armed lever with the front lever arm c and the axis of rotation A1.
  • the seat frame 8 engages behind the backrest 3 and is connected to the backrest 3 on the rear side thereof by means of a second pivot axis A2.
  • This second pivot axis A2 is on the one hand rigidly attached to the back of the backrest 3 by means of a bracket 10 and on the other hand carries at its two end sections two connecting straps 11, on which the rear section of the seat frame 8 is suspended.
  • the two connecting straps 11 are thus rotatably mounted about the axis A2 and have the function of transmitting any movement of the backrest 3 to the seat frame 8.
  • the second pivot axis A2 is located at a vertical distance b from an imaginary horizontal plane through the axis A1 that it is approximately at the level of the lumbar vertebrae of the seated person.
  • a horizontal distance a of the axis A2 from the backrest 3 should preferably also be provided, e.g. can be between 5 and 20 cm.
  • the backrest 3 is loaded in the area of the lumbar vertebrae (arrow B in FIG. 2), it bends backwards due to its inherent elasticity into the position indicated by broken lines.
  • the axis A2 describes a circular arc with the radius A1-A2 and lowers the rear, the backrest 3 adjacent seat section by a corresponding amount. The seated person has thus found a new seating position that meets the ergonomic criteria.
  • FIGS. 1 and 2 The chair shown in FIGS. 1 and 2 is only one possible embodiment which can be modified in various ways by a person skilled in the art within the scope of the inventive concept. So it may be advantageous with a view to achieving a simple construction to extend the backrest 3 shown in one piece downwards and to fasten it to the lower frame element; but it would still be possible to attach the backrest to the frame at about the height of the seat level and either flexibly attach it to a crossbar or steer it by means of a further horizontal axis. In any case, however, at least that section of the backrest 3 that extends from the fastening point of the axis A2 to the lower clamping point of the backrest 3 should be designed to be elastically resilient. The achievement of a corresponding elastic restoring force can be achieved by training the Backrest 3 in plastic, steel or by connecting different materials can be achieved.
  • a decisive advantage of the construction described is the fact that the chair manages with a very simple seat-backrest adjustment mechanism that does not require any coil springs or gas springs and thus results in easy and inexpensive seating, while on the other hand the function achieved by it Consideration of seating comfort corresponds to a fully adequate solution.
  • 3 and 4 show a modification of the inventive concept, the padding not being shown here either, for the sake of clarity.
  • the three basic units i.e. to distinguish a supporting frame 11, a seat 12 and a backrest 13.
  • the commercially available frame 11 provided with rollers 14 carries a cross member 15 which is designed in the form of a steel profile and is rigidly attached to the upper part of the frame.
  • the crossmember 15 On its front edge, the crossmember 15 carries a pivot axis A1, on which the seat 12 is suspended in such a way that it can also perform a rocking movement about the axis A1 in the manner of a two-armed lever.
  • the longer seat section is self-supporting, i.e. not connected to the backrest.
  • the backrest 13 which in turn can consist, for example, of an elastic plastic plate 16 and reinforcing steel strips 17, is on anchored its lower end to the cross member 15 in such a way that it can be pivoted about an axis A3 located on the cross member.
  • a pivot axis A2 is also attached here, at a distance b above a horizontal plane through the axis A1 (corresponding to the position of the lumbar vertebrae) and at a distance a from the backrest itself.
  • This is actuated by an actuating linkage 18 which extends from the front seat section on both sides and above the seat and thus simultaneously forms the armrests of the chair on the one hand, and on the other hand represents the connecting link between the backrest and the seat.
  • the actuating linkage 18 comprises two actuating levers which start from the pivot axis A1 and are rigidly attached to the underside of the seat on both sides thereof.
  • the axis A1 can be, for example, a tube in which the ends of the two actuating levers 18 are rotatably mounted.
  • the axes A1, A2 and A3 illustrated with the aid of FIGS. be designed as a pivot, as hinges, etc.

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Special Chairs (AREA)

Claims (8)

1. Siège comportant une carcasse, un siège proprement dit (2, 12) qui, dans la zone de sa section d'extrémité libre antérieure, prend appui sur la carcasse par l'intermédiaire d'un premier axe horizontal (A1) et peut pivoter autour de cet axe comme un levier à deux bras, ainsi qu'un dossier (3, 13) pratiquement vertical dans sa position de repos, mais pouvant être incliné vers l'arrière en charge, qui est relié au siège proprement dit (2, 12), d'une manière telle que toute inclinaison du dossier (3, 13) à partir de sa position verticale entraîne un abaissement correspondant de la section du siège proprement dit voisine du dossier (3, 13), étant entendu qu'un deuxième axe horizontal (A2) est fixé au dossier (3, 13), du côté de ce dossier (3, 13) opposé au siège proprement dit (2, 12) et à une distance verticale (b) au-dessus dudit premier axe (A1), et que le siège proprement dit (2, 12) est ainsi couplé audit deuxième axe (A2) d'une manière telle que l'abaissement dudit deuxième axe (A2) provoqué par l'inclinaison du dossier (3, 13) soit transmis directement ou indirectement à la section du siège voisine du dossier (3, 13), caractérisé en ce que le dossier (3, 13), fixé à son extrémité inférieure et s'étendant vers le haut sous la forme d'un support en porte à faux, est d'une configuration à effet de ressort au moins dans sa partie se trouvant en dessous dudit deuxième axe (A2).
2. Siège suivant la revendication 1, caractérisé en ce que le siège proprement dit (2) comporte un cadre de support rigide (8) qui est articulé par sa première extrémité audit deuxième axe (A2).
3. Siège suivant la revendication 1, caractérisé en ce que, au niveau du premier axe (A1), de part et d'autre de celui-ci, opèrent deux leviers d'actionnement (18) qui, d'une part, sont reliés rigidement à la face inférieure du siège proprement dit et, d'autre part, sont amenés des deux côtés du siège proprement dit (12) et au-dessus de celui-ci jusqu'au deuxième axe (A2) et forment simultanément les accoudoirs du siège.
4. Siège suivant la revendication 2, caractérisé en ce que le dossier (3) s'étend jusqu'au plan d'appui inférieur extrême du siège et fait ainsi en même temps partie intégrante de la carcasse (1) portant le siège.
5. Siège suivant la revendication 4, caractérisé en ce que des pieds (4) sont fixés au bord inférieur du dossier (3), s'étendent vers le haut dans la zone de l'avant du siège proprement dit et supportent, en cet endroit, ledit premier axe (A1).
6. Siège suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que le dossier (3, 13) peut pivoter autour d'un troisième axe (A3) disposé au niveau de sa section d'extrémité inférieure.
7. Siège suivant l'une quelconque des revendications 1 à 6, caractérisé en ce que le dossier (3, 13) comporte une plaque en matière plastique à effet de ressort qui est renforcée par des bandes d'acier verticales ou longitudinales.
8. Siège suivant l'une quelconque des revendications 1 à 7, caractérisé en ce que ledit deuxième axe (A2) se trouve à la distance horizontale (a) du dossier (3, 13).
EP88810371A 1987-06-09 1988-06-07 Chaise Expired - Lifetime EP0295214B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88810371T ATE67381T1 (de) 1987-06-09 1988-06-07 Sitzmoebel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2161/87A CH672882A5 (fr) 1987-06-09 1987-06-09
CH2161/87 1987-06-09

Publications (2)

Publication Number Publication Date
EP0295214A1 EP0295214A1 (fr) 1988-12-14
EP0295214B1 true EP0295214B1 (fr) 1991-09-18

Family

ID=4227301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88810371A Expired - Lifetime EP0295214B1 (fr) 1987-06-09 1988-06-07 Chaise

Country Status (9)

Country Link
US (1) US4880272A (fr)
EP (1) EP0295214B1 (fr)
JP (1) JPS63317104A (fr)
AT (1) ATE67381T1 (fr)
AU (1) AU599292B2 (fr)
CA (1) CA1293683C (fr)
CH (1) CH672882A5 (fr)
DE (2) DE8806924U1 (fr)
DK (1) DK310488A (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5383712A (en) * 1988-04-25 1995-01-24 Perry; Charles O. Flexible chair
CA2080248C (fr) * 1990-04-10 1996-10-29 Charles O. Perry Chaise empilable faible encombrement
ATE166210T1 (de) * 1990-10-01 1998-06-15 Achim Steinmeier Zusammenbau- und zerlegbares sitz-möbel
DE4236834C2 (de) * 1991-11-02 2002-09-05 Gotthard Bresch Sitzmöbel
DE4210282C1 (fr) * 1992-03-28 1993-04-01 Martin Stoll Gmbh, 7890 Waldshut-Tiengen, De
AU7244294A (en) * 1993-06-02 1994-12-20 Sava Cvek Articulated support chair
ES2110874B1 (es) * 1994-04-21 1998-11-16 Jevit Manufact Metalicas Sa Mueble de asiento.
DE4428244A1 (de) * 1994-08-10 1996-02-22 Desanta Stuhl, insbesondere Reihenstuhl
US6224159B1 (en) 1999-05-12 2001-05-01 Charles Owen Perry Flexible chair which can be disassembled to a flat configuration
US6412869B1 (en) 1999-05-27 2002-07-02 Steelcase Development Corporation Nestable synchrotilt chair
FI108842B (fi) * 1999-11-17 2002-04-15 Martela Oyj Tuoli
WO2002060299A1 (fr) * 2001-01-31 2002-08-08 Radmilo Eric Chaise d'usage general, auto-ajustable, avec tablette de siege en porte-a-faux fixee sur le cote avant du siege
US7226127B1 (en) * 2005-12-21 2007-06-05 Tk Canada Limited Ergonomic chair backrest
US7806478B1 (en) 2006-01-04 2010-10-05 Sava Cvek Task chair with dual tilting capabilities
US9480339B2 (en) 2012-12-31 2016-11-01 Sava Cvek Seat with pelvic support
CA3091345C (fr) * 2018-02-16 2022-10-18 Barrett Studios, Inc. Ensemble chaise
FR3081691B1 (fr) * 2018-06-01 2022-11-04 Martin Veith Chaise au confort ameliore
DE202018103738U1 (de) * 2018-06-29 2019-10-09 Armin Sander Sitzmöbel, insbesondere frei schwingender Stuhl
IT202100006467A1 (it) * 2021-03-18 2022-09-18 Pro Cord Spa Sedia con sedile e schienale oscillanti

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557671A (en) * 1951-06-19 Mcdonald
US169065A (en) * 1875-10-19 Improvement in chairs
DE88021C (fr) *
AT147750B (de) * 1935-01-21 1936-11-10 Hermann Franz Donath Sitzmöbel.
DE675688C (de) * 1936-03-26 1939-05-13 Andreas Gaal Frei tragendes Sitz- und Liegemoebelgestell
US2439869A (en) * 1944-11-14 1948-04-20 Renwick J Sharp Adjustable spring supported chair
DE832053C (de) * 1950-12-24 1952-02-21 Paul Bode Gestell fuer Sitzmoebel, wie Sessel und Stuehle
US2961035A (en) * 1954-05-26 1960-11-22 Lorenz Anton Article of repose for supporting the body of a person
FR77026E (fr) * 1957-10-09 1962-01-08 Siège ou autres articles tels que canapé, etc.
ATE27763T1 (de) * 1983-10-05 1987-07-15 Giroflex Entwicklungs Ag Stuhl mit neigbarem sitz- und lehnenteil.

Also Published As

Publication number Publication date
CH672882A5 (fr) 1990-01-15
CA1293683C (fr) 1991-12-31
JPS63317104A (ja) 1988-12-26
ATE67381T1 (de) 1991-10-15
AU599292B2 (en) 1990-07-12
DK310488A (da) 1988-12-10
DE3864913D1 (de) 1991-10-24
DE8806924U1 (fr) 1988-07-07
AU1666088A (en) 1988-12-15
EP0295214A1 (fr) 1988-12-14
DK310488D0 (da) 1988-06-08
US4880272A (en) 1989-11-14

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