EP0707817A1 - Support oscillant pour chaises avec inclinaison variable et synchronisée de l'assise et du dossier - Google Patents

Support oscillant pour chaises avec inclinaison variable et synchronisée de l'assise et du dossier Download PDF

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Publication number
EP0707817A1
EP0707817A1 EP95830265A EP95830265A EP0707817A1 EP 0707817 A1 EP0707817 A1 EP 0707817A1 EP 95830265 A EP95830265 A EP 95830265A EP 95830265 A EP95830265 A EP 95830265A EP 0707817 A1 EP0707817 A1 EP 0707817A1
Authority
EP
European Patent Office
Prior art keywords
support
seat
backrest
axis
oscillation
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.)
Ceased
Application number
EP95830265A
Other languages
German (de)
English (en)
Inventor
Sergio Moreschi
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.)
Cofemo SpA
Original Assignee
Cofemo 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 Cofemo SpA filed Critical Cofemo SpA
Publication of EP0707817A1 publication Critical patent/EP0707817A1/fr
Ceased 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
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03238—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs

Definitions

  • the present invention pertains in general to chairs with seat and backrest having synchronized variable tilting, and more specifically an oscillating support unit for the elements of the seat of such chairs.
  • seat and backrest have synchronized variable tilting, that is to say susceptible to independent angular movements on corresponding axes of horizontal rotation.
  • the seat may tilt gradually upwards and with respect to a fixed body supported by a base while the backrest varies its tilt automatically according to the arrangement of the seat, or vice versa.
  • the synchronization of the movements is obtained through an articulated joint with parallel axes of the seat supports and of the backrest between them and at the stationary support body and with the aid of opposing elastic elements.
  • the articulated joint between said supports is obtained with lever mechanisms or with synchronization connectors that make it possible to compensate reciprocal sliding of the supports oscillating on different axes.
  • the freedom of reciprocal sliding between said supports is achieved by introducing the articulation axis connecting the supports of seat and backrest through a slot.
  • the unit at issue essentially comprises a boxed body 11 fixed to the top of a supporting upright 12 which rises on a base -not illustrated- and usually at an adjustable height, a support 13 for the seat and a support 14 for the backrest of the seat.
  • the boxed body 11 is fixed and has an invariable arrangement and extends forwards overhanging the supporting upright 12.
  • the seat support 13 is jointed, at the front, to the front of the fixed boxed body 11 on an axis X oriented transversely to the seat. Said support 13 extends backwards overhanging with the possibility of oscillating over the fixed body 11.
  • the backrest support 14 is connected to the seat support 13, without sliding, by means of a transverse shaft 15 for their combined oscillations in response to the oscillation of one of them.
  • the backrest support 14 is also jointed to the fixed boxed body 11 on an axis Y parallel to the axis of oscillation X of the seat support 13.
  • the axis Y is formed by a shaft 16 fixed between two lugs 17 integral with the seat support 13, and this shaft 16 extends into slotted holes 18 obtained in a portion 11' integral with the fixed boxed body 11.
  • a sleeve 19 is mounted in a non-friction plastic material.
  • the slotted holes 18 have dimensions in height equal to the diameter of the shaft with the non-friction sleeve 16, 19 and in length greater than this diameter, the length extending horizontally. In this way, the shaft with the non-friction sleeve 16, 19 may turn and translate horizontally in the slotted holes 18 in parallel to itself, without however being able to move in height. To help its translation movements, the shaft with the non-friction sleeve 16, 19 rests on two horizontal guiding surfaces 20 to the side of the slotted holes 18.
  • the shaft 16 forming the axis of oscillation Y of the backrest support is placed on the bisector of the maximum angle of aperture between the fixed body and the seat support and having the axis of oscillation X of the latter as vertex.
  • the synchronized movements of the supports 13, 14 are opposed, by elastic means as is usual, that is springs 21 tending to recover the initial position of the components once the action that caused the change in tilt has ceased.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
EP95830265A 1994-10-20 1995-06-23 Support oscillant pour chaises avec inclinaison variable et synchronisée de l'assise et du dossier Ceased EP0707817A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBS940085 1994-10-20
IT94BS000085U IT234647Y1 (it) 1994-10-20 1994-10-20 Gruppo oscillante di supporto per sedie con sedile e schienale ad inclinazione variabile sincronizzata

Publications (1)

Publication Number Publication Date
EP0707817A1 true EP0707817A1 (fr) 1996-04-24

Family

ID=11345371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95830265A Ceased EP0707817A1 (fr) 1994-10-20 1995-06-23 Support oscillant pour chaises avec inclinaison variable et synchronisée de l'assise et du dossier

Country Status (2)

Country Link
EP (1) EP0707817A1 (fr)
IT (1) IT234647Y1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT234647Y1 (it) 1994-10-20 2000-03-13 Cofemo Spa Gruppo oscillante di supporto per sedie con sedile e schienale ad inclinazione variabile sincronizzata

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013257A (en) * 1975-04-17 1977-03-22 The Shaw-Walker Company Chair control
US4830431A (en) * 1987-08-24 1989-05-16 Noboru Inoue Interlocking cushioning mechanism for supporting seat portion and backrest of chair in integral fashion
DE4303351A1 (de) * 1992-02-06 1993-10-14 Froli Kunststoffe Heinrich Fro Sitzmöbel
EP0636329A1 (fr) * 1993-07-27 1995-02-01 UCHIDA YOKO Co., Ltd. Chaise
ITBS940085U1 (it) 1994-10-20 1996-04-20 Cofemo Spa Gruppo oscillante di supporto per sedie con sedile e schienale ad inclinazione variabile sincronizzata

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013257A (en) * 1975-04-17 1977-03-22 The Shaw-Walker Company Chair control
US4830431A (en) * 1987-08-24 1989-05-16 Noboru Inoue Interlocking cushioning mechanism for supporting seat portion and backrest of chair in integral fashion
DE4303351A1 (de) * 1992-02-06 1993-10-14 Froli Kunststoffe Heinrich Fro Sitzmöbel
EP0636329A1 (fr) * 1993-07-27 1995-02-01 UCHIDA YOKO Co., Ltd. Chaise
ITBS940085U1 (it) 1994-10-20 1996-04-20 Cofemo Spa Gruppo oscillante di supporto per sedie con sedile e schienale ad inclinazione variabile sincronizzata

Also Published As

Publication number Publication date
ITBS940085U1 (it) 1996-04-20
ITBS940085V0 (it) 1994-10-20
IT234647Y1 (it) 2000-03-13

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