EP0309369B1 - Structure déformable - Google Patents

Structure déformable Download PDF

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Publication number
EP0309369B1
EP0309369B1 EP88440070A EP88440070A EP0309369B1 EP 0309369 B1 EP0309369 B1 EP 0309369B1 EP 88440070 A EP88440070 A EP 88440070A EP 88440070 A EP88440070 A EP 88440070A EP 0309369 B1 EP0309369 B1 EP 0309369B1
Authority
EP
European Patent Office
Prior art keywords
deformation
seats
gutters
gutter
flattening
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
EP88440070A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0309369A1 (fr
Inventor
Charles Heidmann
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.)
Steelcase Strafor SA
Original Assignee
Steelcase Strafor SA
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 Steelcase Strafor SA filed Critical Steelcase Strafor SA
Priority to AT88440070T priority Critical patent/ATE72738T1/de
Publication of EP0309369A1 publication Critical patent/EP0309369A1/fr
Application granted granted Critical
Publication of EP0309369B1 publication Critical patent/EP0309369B1/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—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/44—Supports for the head or the back for the back with elastically-mounted frame
    • A47C7/448—Supports for the head or the back for the back with elastically-mounted frame with resilient blocks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S297/00—Chairs and seats
    • Y10S297/02—Molded

Definitions

  • the present invention relates to a new semi-rigid structure with controlled ability to unidirectional deformation, usable in particular in the construction of ergonomic seats.
  • US Pat. No. 4,557,521 describes a seat whose backrest can be inclined elastically towards the rear, under the thrust of the occupant's back, thanks to a flexible elastic zone, in the form of a cylindrical segment, bringing together the seat, fixed, on the back, made in a single rigid piece.
  • a flexible elastic zone in the form of a cylindrical segment, bringing together the seat, fixed, on the back, made in a single rigid piece.
  • the occupant to rest the head on the upper part of the backrest, the occupant must tilt the entire backrest, without there being a safety limit to this tilting backwards.
  • the invention relates to a structure of this kind, but offering a much greater comfort to the user thanks to the fact that its deformation gives rise to a generally rounded shape, thus conforming exactly to the curvature of the back of the user.
  • the invention relates to a semi-rigid structure with controllable ability to unidirectional deformation, usable in particular in an embodiment of the ergonomic seats, characterized in that it consists of a succession of parallel blocks of rigid material, joined together by narrow gutters made of thin and / or more flexible material, extending over the entire length of said blocks, the deformation of the structure resulting from the flattening of all the gutters, such flattening being limited by ribs arranged at the interior of said gutters.
  • Such a structure according to the invention is therefore particularly advantageous for the production of such seats, in particular office seats, the back of which comprises an upper portion slightly reclining towards the rear to increase the comfort of the occupant by allowing him to relax by throwing the shoulders back.
  • such structures can be adapted to any other portion of seats of any kind with the same advantages.
  • the structure is specially designed for an armchair whose back is curved to adapt to the rounded shape of the body.
  • the structure according to the invention is located, the elements of which are curved, while the lateral, flat portions are integral with the structure and play the role of hinges maintaining this central portion.
  • FIGS. 1 a and 1 b there are shown two conventional structures, one of corrugated material, comprising recesses 1, 1 ′, 1 ⁇ on one face and recesses 2, 2 ′, 2 ⁇ on the other side, and the other in accordion, having folds 3, 3 ′, 3 ⁇ on one side and 4, 4 ′, 4 ⁇ on the other side.
  • the structure of FIG. 1 is rectilinear, in the direction XX ′, the hollows 1 being equal to the hollows 2
  • the structure of FIG. 2 is also rectilinear, in the direction YY ′, the angles of the folds 3 being equal to the angles of the folds 4.
  • the structure according to the invention consists of rigid blocks 5, spaced from one another by ribs 6 and joined by gutters 7, made of thinner material and / or more flexible, which constitute the only deformable portions of the structure.
  • each gutter being small, when an effect is exerted on the structure in the direction F, the overall direction of the structure will pass from ZZ′ to ZZ ⁇ , the whole Z′ZZ ⁇ being small, and function the number of gutters.
  • ribs 8 in the interior of the gutters there are provided, according to the invention, ribs 8 in the interior of the gutters. The control of the deformation of the structure therefore depends on two factors, which can be provided on request, namely the ratio between the width and the depth of each gutter 7 and the thickness of each rib 8.
  • FIGS. 3 and 4 The practical realization of this structure is illustrated in FIGS. 3 and 4, where the same elements have the same references, but where the dimensional factors appear which condition the behavior of the structure.
  • each block 5 has a thickness of 3 mm, while the rounding of each gutter 7 has only a thickness of 2.25 mm.
  • Each gutter has a depth of 12 mm, and an opening of 4 mm, while each rib 8 has a thickness of 2 mm, which leaves to each gutter only a clearance of 2 mm, which represents a deformation of 1 ° of angle.
  • the reinforcing ribs 6 between each gutter have a thickness of 1.5 mm.
  • FIG. 5 there are shown schematically in horizontal section the back of a chair having a central portion C curved in the vertical direction to conform to the back of the occupant and two flat side portions 9 and 9 '. It is obvious that normally, a portion curved in the vertical direction cannot be bent in the horizontal direction. On the contrary, the structure according to the invention allows such bending, which represents considerable progress and constitutes an important characteristic of the invention.
  • the two flat lateral portions 9 and 9 ′ control the horizontal bending of the structure 4-5 by playing the role of hinges.
  • the invention therefore provides the problem of making such seats with a fundamentally new and original solution, adaptable to all situations.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Seats For Vehicles (AREA)
  • Finger-Pressure Massage (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Pipe Accessories (AREA)
  • Laminated Bodies (AREA)
EP88440070A 1987-09-22 1988-08-30 Structure déformable Expired - Lifetime EP0309369B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88440070T ATE72738T1 (de) 1987-09-22 1988-08-30 Verformbare struktur.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8713247 1987-09-22
FR8713247A FR2620791B1 (fr) 1987-09-22 1987-09-22 Structure deformable

Publications (2)

Publication Number Publication Date
EP0309369A1 EP0309369A1 (fr) 1989-03-29
EP0309369B1 true EP0309369B1 (fr) 1992-02-26

Family

ID=9355203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88440070A Expired - Lifetime EP0309369B1 (fr) 1987-09-22 1988-08-30 Structure déformable

Country Status (8)

Country Link
US (1) US4913493A (enExample)
EP (1) EP0309369B1 (enExample)
AT (1) ATE72738T1 (enExample)
CA (1) CA1285470C (enExample)
DE (1) DE3868575D1 (enExample)
ES (1) ES2029530T3 (enExample)
FR (1) FR2620791B1 (enExample)
GR (1) GR3004689T3 (enExample)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4427754C2 (de) * 1994-08-05 1997-09-11 Mauser Office Gmbh Stuhl, insbesondere Drehstuhl
KR200154297Y1 (ko) * 1997-04-03 1999-08-02 한무길 등받이용 탄성가동수단을 구비한 고정의자
US6726285B2 (en) * 2000-07-03 2004-04-27 Herman Miller, Inc. Cellular chair construction
US6779846B2 (en) * 2002-08-06 2004-08-24 Mity-Lite, Inc. Chair with flexible, resilient back support
EP1889791A1 (en) * 2003-07-18 2008-02-20 Creanova AG Hinged closure moulded in closed position
NL1025833C2 (nl) * 2004-03-26 2005-10-03 Bma Ergonomics B V Stoel met automatische rugleuningshoekinstelling.
GB2419281A (en) * 2004-10-25 2006-04-26 Keith Dixon Magnetically-suspended chair
CN101142126A (zh) 2005-03-14 2008-03-12 克雷诺瓦通用密封有限公司 瓶盖
JP4448487B2 (ja) * 2005-11-04 2010-04-07 株式会社岡村製作所 椅子の背凭れ装置
EP1998649B1 (en) * 2006-03-24 2013-03-13 Herman Miller Inc. Ergonomic seat
US8414073B2 (en) * 2006-03-24 2013-04-09 Herman Miller, Inc. Seating arrangement
JP5041510B2 (ja) * 2006-06-13 2012-10-03 テイ・エス テック株式会社 車両用シート
US7926879B2 (en) 2007-09-20 2011-04-19 Herman Miller, Inc. Load support structure
EP2110051A1 (en) * 2008-04-18 2009-10-21 Pro-Cord S.P.A. Chair
US7654617B2 (en) * 2008-06-06 2010-02-02 Mity-Lite, Inc. Flexible chair seat
US8317269B2 (en) 2008-12-24 2012-11-27 Mity-Lite, Inc. Mesh stacking chair
US8033598B2 (en) 2008-12-24 2011-10-11 Mity-Lite, Inc. Mesh folding chair
US8454093B2 (en) 2008-12-24 2013-06-04 Mity-Lite, Inc. Mesh chair with open-end hoop
US8322787B2 (en) 2008-12-24 2012-12-04 Mity-Lite, Inc. Clamping joint for a chair
USD599127S1 (en) 2009-04-13 2009-09-01 Mity-Lite, Inc. Mesh folding chair
USD648554S1 (en) 2009-11-04 2011-11-15 Mity-Lite, Inc. Mesh stacking chair
USD660612S1 (en) 2010-11-16 2012-05-29 Mity-Lite, Inc. Mesh banquet chair
CN102529772B (zh) * 2010-12-29 2015-01-14 株式会社塔捷斯 车辆用座椅的座椅座垫
ITTO20110204A1 (it) * 2011-03-08 2012-09-09 Pro Cord Spa Sedia con schienale oscillante
US8567864B2 (en) 2011-08-12 2013-10-29 Hni Corporation Flexible back support member with integrated recline stop notches
DE102012013208B4 (de) 2012-05-07 2019-07-25 Adient Luxembourg Holding S.À R.L. Sitzteil eines Fahrzeugsitzes
CN104284799B (zh) 2012-05-07 2017-03-22 约翰逊控制技术公司 用于垂直调节车辆座椅的座椅调节装置
DE102012208721A1 (de) * 2012-05-24 2013-11-28 Lufthansa Technik Ag Flugzeugsitz mit einer Sitzbaugruppe
US8820835B2 (en) 2012-08-29 2014-09-02 Hni Technologies Inc. Resilient chair incorporating multiple flex zones
USD707477S1 (en) 2012-08-29 2014-06-24 Hni Technologies, Inc. Chair
ITTO20131015A1 (it) * 2013-12-13 2015-06-14 Pro Cord Spa Sedia con schienale oscillante
CN106163335B (zh) * 2014-05-27 2020-09-22 约翰逊控制技术公司 座椅系统
US9173492B1 (en) * 2014-06-06 2015-11-03 Jacques Fortin Self-reclining chair
US9560917B2 (en) 2014-11-26 2017-02-07 Steelcase Inc. Recline adjustment system for chair
EP3244777B1 (en) 2015-01-16 2020-09-30 Herman Miller, Inc. A method of making a suspension member
ITUB20150149A1 (it) * 2015-02-17 2016-08-17 Pro Cord Spa Sedia con sedile oscillante
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
JP6826043B2 (ja) 2015-04-13 2021-02-03 スティールケース インコーポレイテッド 着座用構成体
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US10966527B2 (en) 2017-06-09 2021-04-06 Steelcase Inc. Seating arrangement and method of construction
ES3063457T3 (en) 2016-09-29 2026-04-16 Steelcase Inc Compliant seating structure
CA3072085A1 (en) 2017-08-10 2019-02-14 Hni Corporation Chairs including flexible frames
US11291305B2 (en) 2017-12-05 2022-04-05 Steelcase Inc. Compliant backrest
US10813463B2 (en) 2017-12-05 2020-10-27 Steelcase Inc. Compliant backrest
CN114502039B (zh) 2019-09-18 2025-05-16 斯迪尔科斯公司 具有格架构造的身体支撑构件
IT202100014576A1 (it) * 2021-06-04 2022-12-04 Pro Cord Spa Sedia con schienale flessibile
US20240225292A1 (en) * 2023-01-11 2024-07-11 Illinois Tool Works Inc. Apparatus and method for manufacturing a support frame for a seat assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR860938A (fr) * 1939-07-11 1941-01-28 Faure Bertrand Ets Perfectionnement apporté dans l'établissement des sièges et notamment des siègespour véhicules
IT1132630B (it) * 1980-09-03 1986-07-02 Interieur Forma Sa Sedile inclinabile
GR79649B (enExample) * 1982-10-22 1984-10-31 Castelli Spa
US4733910A (en) * 1985-03-18 1988-03-29 Sebel Furniture Ltd. Article of furniture
DE3604534A1 (de) * 1986-02-13 1987-08-20 Hartmut Lohmeyer Sitzmoebel mit einem sitz und einer in sich elastisch nachgebenden rueckenlehne

Also Published As

Publication number Publication date
EP0309369A1 (fr) 1989-03-29
FR2620791A1 (fr) 1989-03-24
US4913493A (en) 1990-04-03
ATE72738T1 (de) 1992-03-15
DE3868575D1 (de) 1992-04-02
GR3004689T3 (enExample) 1993-04-28
FR2620791B1 (fr) 1989-12-29
CA1285470C (fr) 1991-07-02
ES2029530T3 (es) 1992-08-16

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