EP1854378A1 - Stuhl mit kippbarer Rückenlehne - Google Patents

Stuhl mit kippbarer Rückenlehne Download PDF

Info

Publication number
EP1854378A1
EP1854378A1 EP06425324A EP06425324A EP1854378A1 EP 1854378 A1 EP1854378 A1 EP 1854378A1 EP 06425324 A EP06425324 A EP 06425324A EP 06425324 A EP06425324 A EP 06425324A EP 1854378 A1 EP1854378 A1 EP 1854378A1
Authority
EP
European Patent Office
Prior art keywords
backrest
chair
case
elastic devices
elastic
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.)
Withdrawn
Application number
EP06425324A
Other languages
English (en)
French (fr)
Inventor
Giancarlo Piretti
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.)
Pro Cord SpA
Original Assignee
Pro Cord SpA
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 Pro Cord SpA filed Critical Pro Cord SpA
Priority to EP06425324A priority Critical patent/EP1854378A1/de
Priority to JP2006194194A priority patent/JP2007301339A/ja
Publication of EP1854378A1 publication Critical patent/EP1854378A1/de
Withdrawn legal-status Critical Current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

Definitions

  • the present invention relates to a chair with a backrest that is tiltable backwards under a backwards thrust applied by the user.
  • the document EP-A-1557115 by the same Applicant describes a chair having the characteristics contained in the preamble of claim 1.
  • the backrest is tiltable backwards relative to a rest position under the action of a backwards thrust applied by the user.
  • the backrest is connected to the base structure of the chair by means of two elastic devices which support the backrest and tend to return the backrest elastically to the rest position.
  • Each of said elastic devices comprises a lever having a first section fastened to the backrest and a second section that co-operates with elastic elements.
  • the second section of the lever is housed in a case that is integrally formed in the base structure of the chair.
  • the object of the present invention is to provide an enhanced chair that enables to obtain the backwards inclination function of the backrest on different chair models, with no need to modify the base structure of the chair.
  • said object is achieved by a chair having the characteristics set out in claim 1.
  • the reference 10 designates a chair according to the present invention.
  • the chair 10 comprises a base structure 12 which can be of various types.
  • the base structure 12 comprises two lateral supports 14, joined together by two transverse bars 16.
  • Each lateral support 14 is permanently fastened to a front leg 18 and to a rear leg 20.
  • the specific form of the base structure 12 is not relevant for the purposes of the present invention.
  • the present invention enables to apply the backwards inclination function of a backrest, with elastic return of the backrest in rest position, to chairs with any type of base structure, even if not specifically designed for the implementation of this function.
  • the reference number 22 designates a seat structure that is fastened to the base structure 12.
  • a seat padding (not shown) is to be fastened on the seat structure 22.
  • the seat padding can vary according to the chair model, maintaining unchanged the seat structure 12.
  • the seat structure 22 has substantially the shape of a frame, preferably made of injection-moulded plastic material.
  • the seat structure 22 comprises two lateral parts 24 joined by a front part 26 and by a rear part 28.
  • the seat structure 22 is provided with holed bosses for fastening, by means of screws (not shown), the seat structure 22 to the base structure 12 and for fastening (also by means of not shown screws) of the seat padding to the seat structure 22.
  • the seat structure 22 is provided with two seats 30 which extend longitudinally at the rear lateral parts of the seat structure 22.
  • the two seats 20 have substantially parallelepiped shape and are open on the rear part of the seat structure 22.
  • the chair 10 comprises a backrest 32, preferably constituted by injection-moulded plastic material.
  • the backrest 32 comprises a bearing part 34 delimited laterally by two vertical portions 36 each of which is provided at its lower end with a seat 38 open inferiorly.
  • the chair 10 comprises two elastic devices 40 which support the backrest 32 and tend to return the backrest 32 elastically towards a rest position.
  • each elastic device 40 comprises a case 42 preferably constituted by stamped metal plate.
  • the case 42 has a general parallelepiped shape, with two lateral walls 44 that extend orthogonally to an upper part 46.
  • the lateral walls 44 have at their bottom end respective bent tabs 48 which extend parallel to the upper part 46 and constitute a lower part of the case 42.
  • the upper part 46 is provided with a tab 50 projecting frontally and provided with holes with vertical axis 52.
  • the lateral walls 44 of the case 42 are provided with aligned holes 54 which support an articulation pin 56, positioned in proximity to the rear end of the case 42.
  • Each elastic device 40 comprises an oscillating member 58 constituted by a substantially L shaped lever.
  • the oscillating member 58 is articulated to the case 42 by means of the pin 56.
  • the oscillating member 58 comprises a backrest support section 60 and a reaction section 62.
  • the two sections 60, 62 are constituted by two distinct elements fastened to each other. This is because, in the embodiment illustrated in the figures the backrest support section 60 is constituted by plastic material, whilst the reaction section 62 is constituted by stamped metal plate. Alternatively, if both sections 60, 62 were made of the same material, it would be possible to obtain the oscillating member 58 in a single piece.
  • the backrest support section 60 has an elongated portion 64 which is inserted in the respective seat 38 of the backrest 32.
  • the reaction section 62 has substantially channel-like shape with a bottom wall 66 and two lateral walls 68.
  • the lateral walls 68 are provided with aligned holes 70 through which extends the articulation pin 56.
  • the pin 56 also extends through a through hole 72 of the backrest support section 60.
  • the reaction section 62 is fastened to the backrest support section 60 by a screw 74.
  • the reaction section 62 is preferably provided with through windows 76 situated in correspondence with the tabs 48 of the case 42.
  • the elastic device 40 comprises at least one elastic element 78 positioned between the upper part 46 of the case 42 and the bottom wall 66 of the reaction section 62.
  • two elastic elements 78 are provided, each of which is constituted by a helical spring in compression having an upper end which bears against the wall 66 of the reaction section 62.
  • the elastic elements 78 tend to maintain the reaction section 62 of the oscillating member 58 bearing against the lower part 48 of the case.
  • the case 42 is configured as a separate element, independent of the base structure 12 and of the seat structure 22.
  • the case 42 has parallelepiped shape which establishes a shape coupling with the respective seat 30 of the seat structure 22.
  • the case 42 of each elastic device 40 is inserted in the respective seat 30 through the rear opening of the chair.
  • the elastic devices 40 can be fastened to the seat structure 22 by means of screws 80 which extend through the holes 52 of the front tab 50 of the respective cases 42.
  • the backrest 32 In the assembled position, the backrest 32 is connected to the seat structure 22 by means of the elastic devices 40.
  • the elastic elements 78 tend to maintain the backrest in a rest position.
  • the user can cause a backwards inclination of the backrest 32 applying a backwards thrust on the backrest 32. Said thrust produces a backwards inclination of the two oscillating members 58, against the elastic force of the elastic elements 78.
  • Figure 5 shows one of the two elastic devices 40 in the position of maximum backwards inclination.
  • the position of maximum backwards inclination of the backrest 32 is defined by the condition of contact between the lateral walls 68 of the reaction section 62 against the upper part 46 of the case 42.
  • the elastic devices 40 are autonomous modular elements, wholly independent with respect to the base structure 12. This allows to apply the backwards inclination function of the backrest 32 to any type of chair, with no need to modify or to design specifically the base structure 12 of the chair.
  • the seat structure 22 of the chair according to the present invention also constitutes a modular element applicable to base structures 12 of different kinds. On the seat structure 22 can be mounted seat paddings with different characteristics according to chair type.
  • the solution according to the present invention is characterised by a considerable simplicity of assembly and by a reduced number of components.
  • the backrest 32 is mounted to the seat structure simply by inserting the elastic devices 40 into the seats 30 of the seat structure 22 and inserting the elongated portions 64 of the elastic devices 40 in the seats 38 of the backrest 32.
  • the fastening of the backrest 32 to the elastic devices 40 can be completed by means of screws 82 ( Figure 1).

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
EP06425324A 2006-05-12 2006-05-12 Stuhl mit kippbarer Rückenlehne Withdrawn EP1854378A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP06425324A EP1854378A1 (de) 2006-05-12 2006-05-12 Stuhl mit kippbarer Rückenlehne
JP2006194194A JP2007301339A (ja) 2006-05-12 2006-07-14 傾斜角度を変更できる背もたれ付きの椅子

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06425324A EP1854378A1 (de) 2006-05-12 2006-05-12 Stuhl mit kippbarer Rückenlehne

Publications (1)

Publication Number Publication Date
EP1854378A1 true EP1854378A1 (de) 2007-11-14

Family

ID=37101693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06425324A Withdrawn EP1854378A1 (de) 2006-05-12 2006-05-12 Stuhl mit kippbarer Rückenlehne

Country Status (2)

Country Link
EP (1) EP1854378A1 (de)
JP (1) JP2007301339A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2130455A1 (de) * 2008-06-06 2009-12-09 Pro-Cord S.P.A. Stuhl mit kippbarer Rückenlehne
US10021984B2 (en) 2015-04-13 2018-07-17 Steelcase Inc. Seating arrangement
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
US10966527B2 (en) 2017-06-09 2021-04-06 Steelcase Inc. Seating arrangement and method of construction
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US20220248853A1 (en) * 2019-06-11 2022-08-11 Herman Miller, Inc. Chair

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7382179B2 (ja) * 2019-08-30 2023-11-16 株式会社イトーキ 椅子

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5452937A (en) * 1992-03-09 1995-09-26 Pro-Cord S.R.L. Plate for connecting the seat, back and legs, especially for chairs
US5902012A (en) * 1997-04-03 1999-05-11 Han; Moogil Chair with movable back
EP1557115A1 (de) 2004-01-26 2005-07-27 Pro-Cord S.P.A. Stuhl mit kippbarer Rückenlehne

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5452937A (en) * 1992-03-09 1995-09-26 Pro-Cord S.R.L. Plate for connecting the seat, back and legs, especially for chairs
US5902012A (en) * 1997-04-03 1999-05-11 Han; Moogil Chair with movable back
EP1557115A1 (de) 2004-01-26 2005-07-27 Pro-Cord S.P.A. Stuhl mit kippbarer Rückenlehne

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2130455A1 (de) * 2008-06-06 2009-12-09 Pro-Cord S.P.A. Stuhl mit kippbarer Rückenlehne
US7681952B2 (en) 2008-06-06 2010-03-23 Pro-Cord S.P.A. Chair with tiltable backrest
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US11324325B2 (en) 2015-04-13 2022-05-10 Steelcase Inc. Seating arrangement
US10575648B2 (en) 2015-04-13 2020-03-03 Steelcase Inc. Seating arrangement
US11963621B2 (en) 2015-04-13 2024-04-23 Steelcase Inc. Seating arrangement
US11096497B2 (en) 2015-04-13 2021-08-24 Steelcase Inc. Seating arrangement
US11553797B2 (en) 2015-04-13 2023-01-17 Steelcase Inc. Seating arrangement
US10021984B2 (en) 2015-04-13 2018-07-17 Steelcase Inc. Seating arrangement
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
US11825955B2 (en) 2017-06-09 2023-11-28 Steelcase Inc. Seating arrangement and method of construction
US10966527B2 (en) 2017-06-09 2021-04-06 Steelcase Inc. Seating arrangement and method of construction
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
US20220248853A1 (en) * 2019-06-11 2022-08-11 Herman Miller, Inc. Chair
US11969094B2 (en) * 2019-06-11 2024-04-30 MillerKnoll, Inc. Chair
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11786039B2 (en) 2019-12-13 2023-10-17 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11805913B2 (en) 2019-12-13 2023-11-07 Steelcase Inc. Body support assembly and methods for the use and assembly thereof

Also Published As

Publication number Publication date
JP2007301339A (ja) 2007-11-22

Similar Documents

Publication Publication Date Title
EP1854378A1 (de) Stuhl mit kippbarer Rückenlehne
US7118177B2 (en) Chair with tiltable backrest
JP5030808B2 (ja) 変形可能な背もたれを備えたイス
US9414684B2 (en) Tilting type chair
CN110869242B (zh) 头枕移动装置
US7552975B2 (en) Backrest attachment device
EP2130455A1 (de) Stuhl mit kippbarer Rückenlehne
JP5253845B2 (ja) 椅子
KR20090053341A (ko) 프레임 의자
RU2732756C1 (ru) Модуль сиденья и механизм наклона
KR200390555Y1 (ko) 허리받침기능을 갖는 의자용 시트와 이를 이용한 의자
KR20120118575A (ko) 허리받침기능을 갖는 의자용 시트와 이를 이용한 의자
JP2009207769A (ja) 椅子
JP6343801B2 (ja) 椅子の面材取付構造、椅子の身体支持部材及び椅子
JP4063043B2 (ja) 椅子
KR200458497Y1 (ko) 등받이 및 이를 구비한 의자
JP6355238B2 (ja) 椅子
JP6155007B2 (ja) 連結構造及び什器
JP2014057761A (ja) 椅子
JP2017192775A (ja) 椅子の背支持構成要素およびこれを備える椅子
JP5461882B2 (ja) 椅子
JP4694707B2 (ja) 座の前後位置調整装置
JP4963752B2 (ja) 椅子
JP4541759B2 (ja) 椅子
JPH0318307A (ja) 着座用家具

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 BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20080515