EP1867251A1 - 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
EP1867251A1
EP1867251A1 EP07425270A EP07425270A EP1867251A1 EP 1867251 A1 EP1867251 A1 EP 1867251A1 EP 07425270 A EP07425270 A EP 07425270A EP 07425270 A EP07425270 A EP 07425270A EP 1867251 A1 EP1867251 A1 EP 1867251A1
Authority
EP
European Patent Office
Prior art keywords
backrest
oscillating support
seat
oscillating
rack teeth
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Withdrawn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
EP07425270A
Other languages
German (de)
English (en)
Inventor
Aldo Ebenestelli
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.)
Ivars SpA
Original Assignee
Ivars 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 Ivars SpA filed Critical Ivars SpA
Publication of EP1867251A1 publication Critical patent/EP1867251A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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

Definitions

  • the present invention concerns in general to chairs with synchronized variable seat and backrest inclination, and in particular regards an oscillating support group for the seat components of said chairs, including also a device for adjusting the inclination of the backrest.
  • Various types of chairs or armchairs, in particular for office use, with a synchronized variable inclination seat and backrest, capable that is of angular movements on respective horizontal rotation axes are already known and available on the market.
  • the seat can be gradually tilted on and with respect to a fixed support body held by a base, whereas the backrest can gradually vary its tilt with respect to its upright position in relation to the position of the seat, or vice versa.
  • One of the objectives of this invention is to provide an oscillating support group for chairs and office chairs referred to above comprising an original, simple and functional selector device, which integrates with the other components of the support group and which enables the inclination of the seat and backrest to be changed without difficulty and set in the various sitting positions of the chair or office chair according to the requirements of the person using it.
  • the support group for chairs proposed here basically comprises a stationary box-shaped body 11, an oscillating support 12 for the seat, an oscillating support 13 for the backrest and a covering element 14 which at least partially encloses them from the bottom towards the top.
  • the box-shaped body 11 has a rigid structure and is fixed to the top of a support upright 15 which extends upwards from a base, nor shown, and which is usually made up of an extendible piston in height, controlled by a lever 16 connected and protruding from a slot provided in one side of said body.
  • the oscillating support 12 for the seat which can be made up of two parallel brackets, is pivoted at the front to the fixed body 11 with a shaft 17, positioned crossways to the seat, and extends projecting backwards along the sides of said body 11.
  • the oscillating support 13 for the backrest is pivoted to a back part of the support for the backrest by means of lateral coaxial pins 18 parallel to the front oscillating shaft 17 so that the two supports 12, 13 can oscillate jointly in response to either of the two oscillating.
  • oscillations are, as is known, contrasted by a helical or other type of spring 19, which rests in the fixed body 11, and operates on the oscillating support 13 for the backrest by means of a tie rod 20 and which can be preloaded by adjusting using a knob 20' associated with said tie rod.
  • the support 13 for the backrest is made up of two facing lateral walls 13', in each one of which, towards the rear part of the support group, is provided an arch shaped slot 21 with the centre of the curve on the front of said group.
  • One side of each of both the above mentioned lateral slots 21 has a number of teeth 22 like a rack, facing forward, sloping from the top towards the bottom and forming corresponding gaps between them.
  • a second control lever 28 is connected to the slide 23 by passing through slits provided in the lateral walls of the backrest 13 support and the box-shaped body 11 and designed to move the slide 23 longitudinally and, by means of the connecting springs 24, to move the arms 25 with the stop pins 27 between an active and an inactive position respectively engaging and disengaging the pins with the teeth of the rack and consequently of the oscillating supports 12, 13 with respect to the fixed body 11.
  • a means of stopping 29, such as a ball operated by a spring, to engage with the recesses 30 in the sides of the fixed box-shaped body so as to set said block and release positions, is provided on at least one side of the slide 23.
  • the stop pins 27 normally engage in the recesses between the rack teeth 22, maintaining a pre-set position of the oscillating supports 12, 13 of the support group and consequently of the chair and backrest of the seat in regards to the fixed body 11. This position can however be changed by having the stop pins 27 engage each time in a different recess formed by the rack teeth 22.
  • the arms 25 with the stop pins do not move simultaneously with the slide 23, but with a delay compared with the latter, thus maintaining transitorily the blocked condition.
  • the forward movement of the slide 23 places the spring 24 under tension, but the pins 27 remain engaged with the respective teeth 22, both due to the inclination downwards of the latter which tend to hold them back, and to the load weighing on the seat which prevents it from disengaging.
  • the stop pins are not moved directly by the slide 23 when it is moved by the control lever 28, but indirectly by the connecting springs 24 of said slide to said arms.
  • the seat may be adjusted to as many different positions as there are recesses formed by the rack teeth the stop pins can engage with.
EP07425270A 2006-05-16 2007-05-09 Support oscillant pour chaises avec inclinaison variable et synchronisée de l'assise et du dossier Withdrawn EP1867251A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000105A ITBS20060105A1 (it) 2006-05-16 2006-05-16 Gruppo di supporto per sedie con sedile e schienale ad inclinazione variabile sincronizzata

Publications (1)

Publication Number Publication Date
EP1867251A1 true EP1867251A1 (fr) 2007-12-19

Family

ID=38622570

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07425270A Withdrawn EP1867251A1 (fr) 2006-05-16 2007-05-09 Support oscillant pour chaises avec inclinaison variable et synchronisée de l'assise et du dossier

Country Status (2)

Country Link
EP (1) EP1867251A1 (fr)
IT (1) ITBS20060105A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6010189A (en) * 1997-03-12 2000-01-04 Leggett & Platt, Incorporated Synchronized chair seat and backrest tilt control mechanism
EP1228722A1 (fr) * 2001-04-27 2002-08-07 CO.FE.MO. S.p.A. Dispositif d'appui élastique pour parties inclinables des chaises de bureau et analogues
US20050236878A1 (en) * 2002-06-25 2005-10-27 Marco Rossetto Support for tilting or synchronized chairs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6010189A (en) * 1997-03-12 2000-01-04 Leggett & Platt, Incorporated Synchronized chair seat and backrest tilt control mechanism
EP1228722A1 (fr) * 2001-04-27 2002-08-07 CO.FE.MO. S.p.A. Dispositif d'appui élastique pour parties inclinables des chaises de bureau et analogues
US20050236878A1 (en) * 2002-06-25 2005-10-27 Marco Rossetto Support for tilting or synchronized chairs

Also Published As

Publication number Publication date
ITBS20060105A1 (it) 2007-11-17

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