EP0295214B1 - Sitzmöbel - Google Patents

Sitzmöbel Download PDF

Info

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)
French (fr)
Other versions
EP0295214A1 (de
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/de
Application granted granted Critical
Publication of EP0295214B1 publication Critical patent/EP0295214B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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)
EP88810371A 1987-06-09 1988-06-07 Sitzmöbel Expired - Lifetime EP0295214B1 (de)

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
CH2161/87 1987-06-09
CH2161/87A CH672882A5 (fi) 1987-06-09 1987-06-09

Publications (2)

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

Family

ID=4227301

Family Applications (1)

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

Country Status (9)

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

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
ATE167369T1 (de) * 1990-04-10 1998-07-15 Charles O Perry Mit hoher dichte stapelbarer und kippbarer stuhl
WO1992005726A1 (de) * 1990-10-01 1992-04-16 Achim Steinmeier Zusammenbau- und zerlegbares sitz-möbel
DE4236834C2 (de) * 1991-11-02 2002-09-05 Gotthard Bresch Sitzmöbel
DE4210283C1 (fi) * 1992-03-28 1993-04-01 Martin Stoll Gmbh, 7890 Waldshut-Tiengen, De
WO1994027472A1 (en) * 1993-06-02 1994-12-08 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
US20040070248A1 (en) * 2001-01-31 2004-04-15 Radmilo Eric Self-adjusting general-purpose chair with a cantilever type seat fixed on the front side of the seat
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
US11266244B2 (en) * 2018-02-16 2022-03-08 Barrett Studios, Inc. Chair assembly
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
DE88021C (fi) *
US169065A (en) * 1875-10-19 Improvement in chairs
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.
DE3372059D1 (en) * 1983-10-05 1987-07-23 Giroflex Entwicklungs Ag Chair with an inclinable seat and back-rest

Also Published As

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

Similar Documents

Publication Publication Date Title
EP0295214B1 (de) Sitzmöbel
DE3879062T2 (de) Ergonomischer stuhl.
EP0179357B1 (de) Sitzmöbel
AT402602B (de) Stuhl stuhl
DE2820063C2 (de) Stuhl
DE3822574C2 (fi)
DE3832923C2 (de) Lendenstützvorrichtung
EP0016937A1 (de) Sitzmöbel
DE3613381A1 (de) Stuhl mit federnd verschwenkbarem sitz und ruecken
DE3930983A1 (de) Sitzmoebel mit neigungsverstellbarer sitzflaeche
DE3630503A1 (de) Stuhl
DE4135162A1 (de) Verbindungsvorrichtung zum stuetzen des sitzes und der rueckenlehne eines stuhls
DE19620872A1 (de) Fahrzeugsitz mit in Höhe und Länge verstellbarer Sitzfläche
DE10301326A1 (de) Sitzmöbel, insbesondere Sessel
DE3116614C2 (fi)
EP0419714B1 (de) Rückenlehne mit einer höhenverstellbaren Lendenlordosen-Unterstützung
EP0347538B1 (de) Stuhl, insbesondere Bürostuhl
DE4424096A1 (de) Stuhl
DE3116459A1 (de) Stuhl
DE2601691B2 (de) Hebelverstellgetriebe fuer sitz- liegesessel
EP0543206A1 (de) Sitzmöbel
DE102004012850B4 (de) Rückenlehne für eine Sitzvorrichtung, insbesondere für einen Drehstuhl
DE3924954A1 (de) Verstellbarer armsessel
DE9102301U1 (de) Stuhl, insbesondere Bürostuhl
EP3102069A1 (de) Stuhl

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19890131

17Q First examination report despatched

Effective date: 19900308

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE FR GB IT NL SE

REF Corresponds to:

Ref document number: 67381

Country of ref document: AT

Date of ref document: 19911015

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3864913

Country of ref document: DE

Date of ref document: 19911024

ITF It: translation for a ep patent filed

Owner name: MODIANO & ASSOCIATI S.R.L.

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19940527

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19940630

Year of fee payment: 7

EAL Se: european patent in force in sweden

Ref document number: 88810371.0

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19950608

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19960101

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19960101

EUG Se: european patent has lapsed

Ref document number: 88810371.0

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19960529

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19960530

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19960531

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19960701

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970607

Ref country code: AT

Effective date: 19970607

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19970630

BERE Be: lapsed

Owner name: PROTONED B.V.

Effective date: 19970630

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970607

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980227

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020821

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050607