EP3058848A1 - A chair with a tilting seat - Google Patents

A chair with a tilting seat Download PDF

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Publication number
EP3058848A1
EP3058848A1 EP16154508.2A EP16154508A EP3058848A1 EP 3058848 A1 EP3058848 A1 EP 3058848A1 EP 16154508 A EP16154508 A EP 16154508A EP 3058848 A1 EP3058848 A1 EP 3058848A1
Authority
EP
European Patent Office
Prior art keywords
backrest
chair
seat
deformable
transverse band
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Withdrawn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
EP16154508.2A
Other languages
German (de)
English (en)
French (fr)
Inventor
Alessandro 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
Publication of EP3058848A1 publication Critical patent/EP3058848A1/en
Withdrawn legal-status Critical Current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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/12—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats with shell-shape seat and back-rest unit, e.g. having arm rests
    • 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
    • A47C7/02—Seat parts
    • A47C7/16—Seats made of wooden, plastics, or metal sheet material; Panel seats

Definitions

  • the present invention relates to a chair comprising a seat and a backrest, in which the backrest is tiltable backwards relative to the seat under a backward thrust applied by the user.
  • a chair comprising a fixed support structure including a pair of front legs and a pair of rear legs, a seat, fixed to the fixed support structure, and a backrest with a backrest panel with an arcuate shape connected in an oscillating manner to the fixed support structure.
  • the backrest comprises two side connecting elements of plastic material, each of which comprises a cylindrical sleeve fixed to an upper portion of a respective rear leg.
  • the side connecting elements of the backrest have respective bellows-shaped deformable portions, integrally formed with the respective cylindrical sleeve.
  • the bellows-shaped deformable portions are connected in a fixed manner to respective side portions of the backrest panel.
  • Monocoque chairs are characterized by a monolithic structure in which the seat and backrest are formed as a single molded panel of plastic material. Monocoque chairs do not usually have backwardly-tiltable backrests.
  • the present invention aims to provide a monocoque chair equipped with a tiltable backrest.
  • this object is achieved by a chair having the characteristics forming the subject of claim 1.
  • the chair 10 designates a chair according to the present invention.
  • the chair 10 comprises a base 12, which carries a monocoque structure 14 in which a seat 16 and a backrest 18 are formed as a single panel of injection-molded plastic material essentially in the shape of an L.
  • the base 12 has two front legs 20 and two rear legs 22 fixed to each other by an upper structure 24 to which the monocoque structure 14 is fixed.
  • the base 12 could have a rotatable central column.
  • the base 12 can be of any type.
  • the monocoque structure 14 including the seat 16 and the backrest 18 is obtained as a single piece of injection-molded plastic material, for example nylon.
  • the monocoque structure 14 comprises a bellows-shaped deformable transverse band 26, which extends in the transverse direction between two opposite side edges 28 of the seat 18.
  • the deformable transverse band 26 is integrally formed with the monocoque structure 14 during the injection-molding step and is formed as one piece with the backrest 18.
  • the deformable transverse band 26 divides the backrest 18 in the transverse direction into a lower backrest portion 18a and an upper backrest portion 18b.
  • the lower backrest portion 18a is connected as a single piece with the rear portion of the seat 16.
  • the upper backrest portion 18b is movable backwards with respect to the lower backrest portion 18a between a rest position and a backward-tilted position.
  • the backward movement of the upper backrest portion 18b under a backward thrust applied by the user's back is possible thanks to the elastic deformation of the deformable transverse band 26.
  • the deformable transverse band 26 comprises a plurality of transverse ribs 30 with C-shaped cross-sections, each of which extends in the transverse direction between the opposite side edges 28 of the backrest 18.
  • the transverse ribs 30 are connected to each other at their ends and alternately face towards the front part and towards the rear part of the chair.
  • the deformable transverse band 26 comprises three transverse ribs 30.
  • the upper rib and the lower rib have the respective concave part facing towards the front of the chair and a central rib that joins together the upper rib and the lower rib, and has the concave part facing the rear part of the chair.
  • Figures 5 and 6 are longitudinal cross-sections showing the chair 10 in the rest position and in the backward-tilted position, respectively.
  • the deformable portion 26 allows the backward tilt of the upper backrest portion 18b relative to the lower backrest portion 18a.
  • the deformable transverse band 26 elastically returns to its undeformed position and returns the backrest 18 to the rest position illustrated in Figure 5 .
  • the same deformable transverse band 26 also forms a stop which prevents any further backward movement of the upper backrest portion 18b beyond the position of maximum backward inclination illustrated in Figure 5 .
  • the backrest 18 comprises a single deformable transverse band 26.
  • more deformable transverse bands could be provided, spaced apart in the vertical direction. If the deformable transverse bands are of a number greater than one, they could be distributed along the backrest 18.
  • the deformable transverse band 26 extends continuously between the opposite side edges 28 of the backrest 18.
  • the backrest 18 could be provided with a through-opening 32, which interrupts the deformable transverse band 26 in the transverse direction.
  • the opening 32 visually separates the backrest 18 from the seat 16 and provides a visually lighter chair, with an elastic behavior more easily deducible by the user.
EP16154508.2A 2015-02-17 2016-02-05 A chair with a tilting seat Withdrawn EP3058848A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITUB2015A000149A ITUB20150149A1 (it) 2015-02-17 2015-02-17 Sedia con sedile oscillante

Publications (1)

Publication Number Publication Date
EP3058848A1 true EP3058848A1 (en) 2016-08-24

Family

ID=53267478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16154508.2A Withdrawn EP3058848A1 (en) 2015-02-17 2016-02-05 A chair with a tilting seat

Country Status (4)

Country Link
US (1) US20160235206A1 (it)
EP (1) EP3058848A1 (it)
CA (1) CA2920268A1 (it)
IT (1) ITUB20150149A1 (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100014576A1 (it) 2021-06-04 2022-12-04 Pro Cord Spa Sedia con schienale flessibile

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD804231S1 (en) * 2016-10-11 2017-12-05 Harvest-Excel International Pte. Ltd. Seatback
JP6745211B2 (ja) * 2016-12-28 2020-08-26 株式会社ジェイエスピー シート芯材
US11052800B2 (en) * 2017-02-17 2021-07-06 Jsp Corporation Seat core material
EP3400838A1 (de) * 2017-05-08 2018-11-14 Sedus Stoll AG Verbindungsanordnung für eine rückenlehne, büro- oder konferenzsitzmöbel und verfahren zur herstellung einer verbindungsanordnung für eine rückenlehne

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987004909A1 (en) * 1986-02-13 1987-08-27 Hartmut Lohmeyer Chair with a seat and an elastically yielding back support
US4892356A (en) * 1988-07-27 1990-01-09 Chromcraft Furniture Corp. Chair shell
EP0574958A1 (en) * 1988-08-31 1993-12-22 Kokuyo Co., Ltd. Chair provided with a backrest
JP2007195953A (ja) * 2005-12-28 2007-08-09 Aichi Kk 椅子

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133765A (en) * 1962-08-30 1964-05-19 Ion Corp Chair
US3669496A (en) * 1970-12-03 1972-06-13 American Desk Mfg Co Chair and seat and back unit therefor
US4390204A (en) * 1978-01-04 1983-06-28 Gregg Fleishman Portable furniture
US4733910A (en) * 1985-03-18 1988-03-29 Sebel Furniture Ltd. Article of furniture
FR2620607B1 (fr) * 1987-09-22 1991-03-15 Strafor Sa Siege ergonomique
FR2620791B1 (fr) * 1987-09-22 1989-12-29 Strafor Sa Structure deformable
US5123702A (en) * 1990-10-24 1992-06-23 Shelby Williams Industries, Inc. Interaction-high density stacking chair
DE9100572U1 (it) * 1991-01-20 1992-06-11 Fritz Hansens Eft. A/S, Alleroed, Dk
JPH0817730B2 (ja) * 1991-05-21 1996-02-28 株式会社イトーキ 背と座がシンクロ動作する椅子におけるシェル構造体
US5538326A (en) * 1994-11-14 1996-07-23 Milsco Manufacturing Company Flexible unitary seat shell
US7073864B2 (en) * 2003-06-13 2006-07-11 Hni Technologies Inc. Stackable chair with flexing frame
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
ITTO20110204A1 (it) * 2011-03-08 2012-09-09 Pro Cord Spa Sedia con schienale oscillante
US9173492B1 (en) * 2014-06-06 2015-11-03 Jacques Fortin Self-reclining chair
US20160242552A1 (en) * 2015-02-23 2016-08-25 Plano Molding Company Seating device with storage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987004909A1 (en) * 1986-02-13 1987-08-27 Hartmut Lohmeyer Chair with a seat and an elastically yielding back support
US4892356A (en) * 1988-07-27 1990-01-09 Chromcraft Furniture Corp. Chair shell
EP0574958A1 (en) * 1988-08-31 1993-12-22 Kokuyo Co., Ltd. Chair provided with a backrest
JP2007195953A (ja) * 2005-12-28 2007-08-09 Aichi Kk 椅子

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100014576A1 (it) 2021-06-04 2022-12-04 Pro Cord Spa Sedia con schienale flessibile
EP4098150A1 (en) 2021-06-04 2022-12-07 Pro-Cord S.p.A. A chair with a flexible backrest

Also Published As

Publication number Publication date
US20160235206A1 (en) 2016-08-18
CA2920268A1 (en) 2016-08-17
ITUB20150149A1 (it) 2016-08-17

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