FR2594663A1 - Chair or armchair having a slope which is variable and synchronised with the seat and the backrest - Google Patents
Chair or armchair having a slope which is variable and synchronised with the seat and the backrest Download PDFInfo
- Publication number
- FR2594663A1 FR2594663A1 FR8617528A FR8617528A FR2594663A1 FR 2594663 A1 FR2594663 A1 FR 2594663A1 FR 8617528 A FR8617528 A FR 8617528A FR 8617528 A FR8617528 A FR 8617528A FR 2594663 A1 FR2594663 A1 FR 2594663A1
- Authority
- FR
- France
- Prior art keywords
- seat
- backrest
- support
- chair
- 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.)
- Granted
Links
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
- A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs
- A47C1/03279—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs of torsion type
Abstract
Description
CHAISE OU FAUTEUIL A INCLINAISON VARIARLE ET SYNCHRONISEE
DE L'ASSISE ET DU DOSSIER.VARIARLE AND SYNCHRONIZED CHAIR OR ARMCHAIR
SEAT AND BACKREST.
I1 est déjà connu de réaliser des chaises ou fauteuils, en particulier pour bureaux, comprenant une assise et un dossier à inclinaison variable synchronisée, c'est- & dire qui sont susceptibles de subir des déplacements angulaires interdépendants autour d'axes de rotation horizontaux correspondants. It is already known to produce chairs or armchairs, in particular for offices, comprising a seat and a backrest with synchronized variable inclination, that is to say which are liable to undergo interdependent angular displacements around corresponding horizontal axes of rotation. .
En pratique, le siège peut s'incliner progressivement sur un corps de support fixe porté par un piètement, et par rapport à ce corps, tandis que le dossier change automatiquement d'inclinaison en fonction de celle prise par l'assise, ou inversement. In practice, the seat can gradually recline on a fixed support body carried by a base, and with respect to this body, while the backrest automatically changes inclination as a function of that taken by the seat, or vice versa.
Selon la technique connue, pour la synchronisation de leurs déplacements angulaires, l'assise et le dossier sont articulés et reliés entre eux au moyen de biellettes ou leviers, et avec l'interposition de moyens de rappel à ressort qui sont relativement complexes. According to the known technique, for the synchronization of their angular displacements, the seat and the backrest are articulated and connected together by means of rods or levers, and with the interposition of spring return means which are relatively complex.
Au contraire, le but de la présente invention est de proposer une chaise ou un fauteuil du type précité dns lequel la synchronisation des déplacements angulaires interdépendants de l'assise et du dossier soit obtenue, simplement et efficacement, au moyen de secteurs dentés respectivement solidaires des supports de l'assise et du dossier, et conjugués entre eux. On the contrary, the object of the present invention is to propose a chair or armchair of the aforementioned type in which the synchronization of the interdependent angular displacements of the seat and the backrest is obtained, simply and effectively, by means of toothed sectors respectively integral with the seat and back supports, and conjugated with each other.
L'équilibrage des forces qui agissent sur l'assise et sur le dossier est par ailleurs assuré par au moins une barre de torsion ou par un ressort pneumatique. Balancing of the forces acting on the seat and on the backrest is also ensured by at least one torsion bar or by an air spring.
A cet effet, la présente invention a pour objet une chaise ou un fauteuil possédant une assise et un dossier à inclinaison variable synchronisée, en particulier pour bureaux, qui comprend un dispositif ou montant de support réglable en hauteur et portant un corps fixe à sa partie supérieure, une assise et un dossier munis de supports indépendants susceptibles de subir des déplacements angulaires liés et synchronisés, et des moyens à ressort ou élastiques destinés à opposer une résistance de rappel à ces déplacements et/ou à bloquer l'assise et le dossier dans les différentes positions, caractérisé en ce que les supports de l'assise et du dossier sont articulés sur ledit corps fixe au moyen d'axes d'oscillation horizontaux et transversaux, espacés l'un de l'autre et parallèles entre eux, en ce que lesdits supports de l'assise et du dossier sont munis d'au moins une paire de secteurs dentés en regard l'un de l'autre et conjugués, qui assurent la synchronisation de l'assise et du dossier, et en ce que les moyens à ressort ou élastiques sont montés au droit d'au moins l'un desdits axes d'oscillation ou entre le corps fixe et le support de 1 'assi- se ou du dossier. To this end, the subject of the present invention is a chair or an armchair having a seat and a backrest with synchronized variable inclination, in particular for offices, which comprises a device or support upright adjustable in height and carrying a body fixed at its part upper, a seat and a backrest provided with independent supports liable to undergo linked and synchronized angular displacements, and spring or elastic means intended to oppose a restoring resistance to these displacements and / or to block the seat and the backrest in the different positions, characterized in that the supports for the seat and the backrest are articulated on said fixed body by means of horizontal and transverse oscillation axes, spaced from one another and parallel to each other, in this that said supports of the seat and the back are provided with at least one pair of toothed sectors facing each other and conjugate, which ensure the synchronization of the seat and the back , and in that the spring or elastic means are mounted in line with at least one of said oscillation axes or between the fixed body and the support of the seat or the backrest.
D'autres caractéristiques et avantages de l'invention seront mieux compris à la lecture de la description qui va suivre d'un exemple de réalisation et en se référant aux dessins annexés sur lesquels,
la figure 1 est une vue latérale schématique d'une chaise comprenant une assise et un dossier à inclinaison variable synchronisée et un organe qui oppose une résistance de rappel aux déplacements, et formé d'au moins une barre de torsion ; et
la figure 2 est une vue analogue d'une chaise munie d'un organe de rappel constitué par un ressort pneumatique ou équivalent.Other characteristics and advantages of the invention will be better understood on reading the following description of an exemplary embodiment and with reference to the appended drawings in which,
Figure 1 is a schematic side view of a chair comprising a seat and a backrest with synchronized variable inclination and a member which provides a return resistance to movement, and formed of at least one torsion bar; and
Figure 2 is a similar view of a chair provided with a return member constituted by a pneumatic spring or equivalent.
La chaise ou le fauteuil considéré comprend un piètement comportant un dispositif ou montant 1, fixe ou de préférence réglable en hauteur, une assise 2 fixée à un support 3 et un dossier 4, muni de son support 5 qui présente la forme approximative d'un t. Au sommet du dispositif ou montant 1 est monté un corps fixe 6 auquel l'assise 2 et le dossier 4 sont articulés par l'intermédiaire de leurs supports respectifs 3 et 5. The chair or armchair in question comprises a base comprising a device or upright 1, fixed or preferably adjustable in height, a seat 2 fixed to a support 3 and a backrest 4, provided with its support 5 which has the approximate shape of a t. At the top of the device or upright 1 is mounted a fixed body 6 to which the seat 2 and the backrest 4 are articulated by means of their respective supports 3 and 5.
Plus précisément, le support 3 de l'assise 2 est articulé sur la partie avant. du corps fixe 6 au moyen d'un axe de fixation et d'oscillation 7. Le sup port 5 du dossier 4 est au contraire articulé dans la partie arrière du corps fixe 6 au moyen d'un axe de fixation et d'oscillation 8. De cette façon, l'assise 2 et le dossier 4 peuvent décrire des déplacements angulaires indépendants sur leurs axes d'oscillation respectifs 7 et 8. Ces déplacements sont de toute façon synchronisés de telle manière qu'à la variation de l'inclinaison de l'assise 2 corresponde une variation automatique de l'inclinaison du dossier, et inversement, de façon à maintenir constamment ces éléments dans leur attitude d'utilisation correcte en fonction du poids qui pèse sur l'assise et de la poussée exercée contre le dossier. More specifically, the support 3 of the seat 2 is articulated on the front part. of the fixed body 6 by means of a fixing and oscillation axis 7. The sup port 5 of the backrest 4 is on the contrary articulated in the rear part of the fixed body 6 by means of a fixing and oscillation axis 8 In this way, the seat 2 and the backrest 4 can describe independent angular displacements on their respective axes of oscillation 7 and 8. These displacements are in any case synchronized in such a way that at the variation of the inclination of the seat 2 corresponds to an automatic variation of the inclination of the backrest, and vice versa, so as to constantly maintain these elements in their attitude of correct use as a function of the weight which weighs on the seat and of the thrust exerted against the backrest .
Selon l'invention, la synchronisation des déplacements angulaires de l'assise 2 et du dossier est obtenue à l'aide d'au moins une paire de secteurs dentés 9, 10, respectivement solidaires du support 3 de l'assise 2 et du support 5 du dossier 4 et conjugués l'un de l'autre. Il est prévu, de préférence, mais non nécessairement, deux paires de secteurs'dentés 9, 10, disposés sur les côtés opposés des supports 3 et 5 de l'assise et du dossier. Dans chaque cas, chaque'secteur denté 9 solidaire du support 3 de l'assise 2 possède un rayon R' issu d'un centre qui se trouve sur l'axe d'oscillation 8 du support sur le corps fixe 6. De même, chaque secteur 10 solidaire du support 5 du dossier 4 possède un rayon R" issu d'un centre qui se trouve sur l'axe d'articulation 8 du support 5 sur le corps fixe 6. According to the invention, the synchronization of the angular displacements of the seat 2 and the backrest is obtained using at least one pair of toothed sectors 9, 10, respectively integral with the support 3 of the seat 2 and the support 5 of file 4 and combined with one another. There are preferably, but not necessarily, two pairs of toothed sectors 9, 10, arranged on the opposite sides of the supports 3 and 5 of the seat and the backrest. In each case, each toothed sector 9 integral with the support 3 of the seat 2 has a radius R ′ originating from a center which is on the axis of oscillation 8 of the support on the fixed body 6. Similarly, each sector 10 integral with the support 5 of the backrest 4 has a radius R "coming from a center which is on the articulation axis 8 of the support 5 on the fixed body 6.
Sous l'effet de ce qui a été indiqué plus haut, chaque oscillation ou rotation de l'assise 2 autour de l'axe de fixation 7 se transmet automatiquement au dossier 4 par l'intermédiaire de la paire ou des paires de secteurs dentés 9, 10 pour déterminer des variations liées de l'inclinaison des deux parties oscillantes-. Under the effect of what has been indicated above, each oscillation or rotation of the seat 2 around the fixing axis 7 is automatically transmitted to the backrest 4 by means of the pair or pairs of toothed sectors 9 , 10 to determine related variations in the inclination of the two oscillating parts.
I1 convient finalement de remarquer qu'au niveau de l'axe d'articulation de l'assise et/ou de celui du dossier sur le corps fixe 6, est ou sont montée(s), comme représenté sur la figure 1, une ou des barre(s) de torsion précontrainte(s) 7', 8'; destinée(s) à soutenir le poids qui pèse sur l'assise et à résister à la poussée exercée sur le dossier pour opposer ainsi une résistance de rappel aux déplacements angulaires synchronisés de l'assise et du dossier. Finally, it should be noted that at the level of the axis of articulation of the seat and / or that of the backrest on the fixed body 6, is or are mounted, as shown in FIG. 1, one or more prestressed torsion bars 7 ', 8'; intended (s) to support the weight which weighs on the seat and to resist the thrust exerted on the file to thus oppose a return resistance to the synchronized angular displacements of the seat and the file.
En variante, et comme on l'a représenté sur la figure 2, en remplacement des barres de torsion, il est possible d'utiliser ce qu'on appelle un ressort pneumatique il qui est relié, par exemple, d'un côté, au corps fixe 6 et, de l'autre, au support 5 du dossier 4 dans la région adjacente au secteur denté 10, ou au support de l'assise, ce ressort ayant pour fonction de soutenir le poids qui pèse sur l'assise et de résister aux poussées exercées sur le dossier, éventuellement, de bloquer les différentes positions d'inclinaison synchronisée de l'assise et du dossier. As a variant, and as shown in FIG. 2, instead of the torsion bars, it is possible to use what is called an air spring il which is connected, for example, on one side, to the fixed body 6 and, on the other, to the support 5 of the backrest 4 in the region adjacent to the toothed sector 10, or to the support of the seat, this spring having the function of supporting the weight which weighs on the seat and resist the thrusts exerted on the backrest, possibly blocking the different positions of synchronized tilt of the seat and backrest.
Bien entendu, diverses modifications pourront être apportées par l'homme de l'art au dispositif qui vient d'être décrit uniquement à titre d'exemple non limitatif sans sortir du cadre de l'invention. Of course, various modifications may be made by those skilled in the art to the device which has just been described solely by way of non-limiting example without departing from the scope of the invention.
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT05130/86A IT1191383B (en) | 1986-02-21 | 1986-02-21 | CHAIR WITH SEAT AND BACK WITH SYNCHRONIZED VARIABLE INCLINATION |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2594663A1 true FR2594663A1 (en) | 1987-08-28 |
FR2594663B1 FR2594663B1 (en) | 1989-04-28 |
Family
ID=11118070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR868617528A Expired FR2594663B1 (en) | 1986-02-21 | 1986-12-11 | CHAIR OR ARMCHAIR WITH VARIABLE AND SYNCHRONIZED RECLINING OF THE SEAT AND BACK |
Country Status (5)
Country | Link |
---|---|
CH (1) | CH669721A5 (en) |
DE (1) | DE3640336A1 (en) |
ES (1) | ES2004040A6 (en) |
FR (1) | FR2594663B1 (en) |
IT (1) | IT1191383B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995017117A1 (en) * | 1993-12-23 | 1995-06-29 | Jurek Buchacz | Improvement in a tilting means for a chair |
US6729688B2 (en) * | 2000-03-24 | 2004-05-04 | Giroflex-Entwicklungs-Ag | Seat and backseat assembly for seating, in particular office chairs |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO174135C (en) * | 1990-09-05 | 1994-03-23 | Staal & Stil As | chair |
DE19517658A1 (en) * | 1995-05-13 | 1996-11-14 | Link Wilhelm Kg | Chair especially for office with seat surface on seat support on column |
US7837265B2 (en) * | 2006-03-24 | 2010-11-23 | Hni Corporation | Reclining chair with enhanced adjustability |
CA2895942A1 (en) | 2007-03-13 | 2008-09-13 | Hni Technologies Inc. | Dynamic chair back lumbar support system |
MX2012012739A (en) | 2010-05-05 | 2013-04-09 | Allsteel Inc | Moveable and demountable wall panel system for butt-glazed wall panels. |
WO2014144143A1 (en) | 2013-03-15 | 2014-09-18 | Hni Technologies Inc. | Chair with activated back flex |
US10064493B2 (en) | 2014-04-17 | 2018-09-04 | Hni Technologies Inc. | Flex lumbar support |
USD731833S1 (en) | 2014-04-17 | 2015-06-16 | Allsteel Inc. | Chair |
USD743180S1 (en) | 2014-10-15 | 2015-11-17 | Hni Technologies Inc. | Chair |
US9801470B2 (en) | 2014-10-15 | 2017-10-31 | Hni Technologies Inc. | Molded chair with integrated support and method of making same |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1429367A1 (en) * | 1962-08-31 | 1969-06-19 | No Sag Drahtfedern Gmbh | Sitting or reclining chairs |
DE2032464A1 (en) * | 1970-07-01 | 1972-01-05 | Bergmann R | chair |
EP0114600A2 (en) * | 1983-01-21 | 1984-08-01 | Pierre Schmitz | Chair, in particular an office chair |
US4521053A (en) * | 1981-06-23 | 1985-06-04 | Gispen+Staalmeubel B.V. | Chair |
-
1986
- 1986-02-21 IT IT05130/86A patent/IT1191383B/en active
- 1986-11-26 DE DE19863640336 patent/DE3640336A1/en not_active Withdrawn
- 1986-12-02 CH CH4799/86A patent/CH669721A5/it not_active IP Right Cessation
- 1986-12-11 FR FR868617528A patent/FR2594663B1/en not_active Expired
-
1987
- 1987-01-07 ES ES8700029A patent/ES2004040A6/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1429367A1 (en) * | 1962-08-31 | 1969-06-19 | No Sag Drahtfedern Gmbh | Sitting or reclining chairs |
DE2032464A1 (en) * | 1970-07-01 | 1972-01-05 | Bergmann R | chair |
US4521053A (en) * | 1981-06-23 | 1985-06-04 | Gispen+Staalmeubel B.V. | Chair |
EP0114600A2 (en) * | 1983-01-21 | 1984-08-01 | Pierre Schmitz | Chair, in particular an office chair |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995017117A1 (en) * | 1993-12-23 | 1995-06-29 | Jurek Buchacz | Improvement in a tilting means for a chair |
US6729688B2 (en) * | 2000-03-24 | 2004-05-04 | Giroflex-Entwicklungs-Ag | Seat and backseat assembly for seating, in particular office chairs |
Also Published As
Publication number | Publication date |
---|---|
CH669721A5 (en) | 1989-04-14 |
IT8605130A0 (en) | 1986-02-21 |
FR2594663B1 (en) | 1989-04-28 |
DE3640336A1 (en) | 1987-08-27 |
IT1191383B (en) | 1988-03-23 |
ES2004040A6 (en) | 1988-12-01 |
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Legal Events
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ST | Notification of lapse |