FR2892905A1 - Articulated seat for use in office, has base and backrest connected by two identical connecting devices, adjusting unit for adjusting center of gravity position of user, and tilting assembly mounted at rotation with respect to support - Google Patents

Articulated seat for use in office, has base and backrest connected by two identical connecting devices, adjusting unit for adjusting center of gravity position of user, and tilting assembly mounted at rotation with respect to support Download PDF

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Publication number
FR2892905A1
FR2892905A1 FR0511380A FR0511380A FR2892905A1 FR 2892905 A1 FR2892905 A1 FR 2892905A1 FR 0511380 A FR0511380 A FR 0511380A FR 0511380 A FR0511380 A FR 0511380A FR 2892905 A1 FR2892905 A1 FR 2892905A1
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France
Prior art keywords
seat
rotation
support
axis
backrest
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Pending
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FR0511380A
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French (fr)
Inventor
Didier Monard
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Individual
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Individual
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Priority to FR0511380A priority Critical patent/FR2892905A1/en
Publication of FR2892905A1 publication Critical patent/FR2892905A1/en
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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C3/00Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02Rocking chairs
    • A47C3/025Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/026Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255Reclining 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
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272Reclining 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
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03288Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with resilient blocks
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/36Support for the head or the back
    • A47C7/40Support for the head or the back for the back
    • A47C7/44Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/443Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs

Abstract

The seat has a foot (22) on which a U-shaped support (7) with branches (7a, 7b) is fixed. A base (5) and a backrest (6) are connected together by two connecting devices (11a, 11b) which are identical and symmetrical with respect to the base. The devices have an adjusting unit for adjusting a center of gravity position of a user. The devices are mounted in rotation around two rotational axes (1a, 1b) positioned at an end of the support defining a common rotational axis (1). The base and the backrest have a tilting assembly mounted at rotation with respect to the support around the axis.

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention concerne un siège articulé comportant : un pied, une assise, un dossier, un support en forme de U, fixée comportant deux branches latérales entre lesquelles est disposée l'assise, deux dispositifs de liaison, connectant l'assise et le dossier, et montés à pivotement par rapport au support autour d'un axe de rotation, de manière à positionner le centre de gravité 10 de l'utilisateur/trice à proximité de cet axe de rotation.  The invention relates to an articulated seat comprising: a foot, a seat, a backrest, a U-shaped support, fixed with two lateral branches between which is arranged the seat, two connecting devices, connecting the seat and backrest and pivotally mounted relative to the support about an axis of rotation, so as to position the center of gravity of the user / trice near this axis of rotation.

Etat de la techniqueState of the art

Un siège est couramment composé d'une assise et d'un dossier délimitant entre eux un espace 15 pou recevoir le corps de l'utilisateur/trice. Certains sièges articulés pour la relaxation ou le bureau permettent de faire varier l'angle du dossier par rapport à l'assise, en vue de l'adapter au confort recherché par l'utilisateur/trice. De manière courante, l'assise et le dossier sont articulés l'un par rapport à l'autre. Des moyens d'immobilisation facilement réversibles permettent de maintenir l'assise et/ou le dossier dans différentes inclinaisons désirées par l'utilisateur/trice, de 20 manière générale, l'un au moins des éléments est solidaire d'un châssis, pour conférer aux éléments une mobilité relative les uns par rapport aux autres. Il a été également proposé des sièges articulés de bureau avec une assise, montée éventuellement en rotation, sur un pied, un dossier qui bascule par rapport à l'assise, et des moyens de verrouillage pour bloquer le dossier dans une position désirée. Typiquement, la hauteur de 25 l'assise est réglable par rapport au sol, indépendamment de l'inclinaison du dossier par rapport à l'assise, et l'ensemble est bloqué par des moyens de verrouillage indépendants. Cependant, ces sièges articulés engendrent des problèmes concernant d'une part, la modification de l'angle délimité par l'assise et le dossier, et d'autre part le blocage dans une position déterminée. 1 30 Il a également été proposé des sièges optimisant le positionnement de l'utilisateur/trice sur le siège, en positionnant son centre de gravité à proximité d'un axe de rotation. Ce genre de dispositif permet ainsi de faire pivoter l'ensemble du dossier et de l'assise pour accompagner plus aisément les mouvements de l'utilisateur/trice et réduire les inconvénients de fatigue dorsale. Cependant, pour ce type de sièges, le mouvement d'oscillation, engendré par cet axe de rotation, ne compensait pas les variations de poids des différents utilisateurs/trices. Par conséquent, le siège devenait trop mobile et instable pour les utilisateurs/trices les plus lourds. Le document WO 2005/051132 décrit un siège articulé dont l'assise est articulée en mode pendulaire, mais les axes de rotation du siège sur son support, et l'axe de l'assise sur le dispositif de jonction ne disposent pas de moyens de compensation des mouvements de bascule en fonction du poids de l'utilisateur/trice.  A seat is commonly composed of a seat and a folder delimiting between them a space 15 to receive the body of the user. Some articulated chairs for relaxation or the office can vary the angle of the backrest relative to the seat, to adapt to the comfort sought by the user. Usually, the seat and the backrest are articulated relative to each other. Easily reversible immobilization means make it possible to maintain the seat and / or the backrest in different inclinations desired by the user. In general, at least one of the elements is integral with a chassis, to confer to the elements relative mobility relative to each other. It has also been proposed articulated office chairs with a seat, possibly mounted in rotation, on a foot, a backrest that tilts relative to the seat, and locking means for locking the backrest in a desired position. Typically, the height of the seat is adjustable relative to the ground, regardless of the inclination of the backrest relative to the seat, and the assembly is blocked by independent locking means. However, these articulated seats cause problems on the one hand, the modification of the angle delimited by the seat and the backrest, and on the other hand the locking in a specific position. It has also been proposed seats optimizing the positioning of the user on the seat, positioning its center of gravity near an axis of rotation. This kind of device allows to rotate the entire backrest and seat to more easily accompany the movements of the user and reduce the disadvantages of back fatigue. However, for this type of seat, the oscillation movement generated by this axis of rotation did not compensate for the weight variations of the different users. As a result, the seat became too mobile and unstable for the heaviest users. The document WO 2005/051132 describes an articulated seat whose seat is hinged in pendulum mode, but the axes of rotation of the seat on its support, and the axis of the seat on the connecting device do not have any means of compensation of the rocking movements according to the weight of the user.

Objet de l'invention L'invention a pour but un siège articulé ne présentant pas ces inconvénients et, en particulier, un siège articulé disposant de moyens de compensation des mouvements de bascule en fonction du poids de l'utilisateur/trice.  OBJECT OF THE INVENTION The object of the invention is to provide an articulated seat which does not have these drawbacks and, in particular, an articulated seat having means for compensating the rocking movements as a function of the weight of the user.

Selon l'invention ce but est atteint par un siège selon les revendications annexées et plus particulièrement, par le fait que : le siège est articulé par deux axes disposant de moyens de compensation des mouvements d'oscillation par le poids de l'utilisateur/trice. 1' axe de rotation principal comporte deux axes articulés aux extrémités du support en forme de U. Ces axes de section triangulaire sont précontraints avec des blocs de caoutchouc dans un logement solidaire du support. l'axe de rotation de l'assise comporte deux axes, articulés à des dispositifs de liaison. Ces axes, de section triangulaire, sont précontraints avec des blocs de caoutchouc dans un logement solidaire du dispositif de liaison.  According to the invention this object is achieved by a seat according to the appended claims and more particularly by the fact that: the seat is articulated by two axes having means for compensating oscillation movements by the weight of the user . The main axis of rotation comprises two axes articulated at the ends of the U-shaped support. These triangular section axes are prestressed with rubber blocks in a housing secured to the support. the axis of rotation of the seat has two axes, articulated to connecting devices. These axes, of triangular section, are prestressed with rubber blocks in a housing integral with the connecting device.

Les forces radiales exercées sur ces axes, régulent les forces de résistance à la torsion exercées sur ces dits-axes. Description sommaire des dessins  The radial forces exerted on these axes, regulate the torsional resistance forces exerted on these so-called axes. Brief description of the drawings

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode particulier de réalisation de l'invention donné à titre d `exemple 10 non limitatif et représenté aux dessins annexés, dans lesquels :  Other advantages and features will emerge more clearly from the following description of a particular embodiment of the invention given by way of nonlimiting example and represented in the accompanying drawings, in which:

La figure 1 est une vue latérale, en coupe partielle, d'un mode particulier de réalisation selon l'invention. La figure 2 est une vue de face, d'un mode particulier de réalisation, selon la figure 1. 15 La figure 3 est une vue en coupe partielle d'un dispositif de liaison d'un siège selon la figure 1. La figure 4 est une vue latérale, en coupe partielle, de l'axe principal de rotation La figure 5 est une vue latérale, en coupe partielle, de l'articulation de l'assise selon la figure 2 20 La figure 6 est une vue latérale, en coupe partielle, de l'articulation du dispositif de liaison sur le support selon la figure 2 La figure 7 est une vue latérale en coupe partielle du dispositif de liaison, en utilisation selon la figure 2  Figure 1 is a side view, in partial section, of a particular embodiment of the invention. FIG. 2 is a front view of a particular embodiment according to FIG. 1. FIG. 3 is a partial sectional view of a seat connecting device according to FIG. 1. FIG. 4 4 is a partial sectional side view of the main axis of rotation FIG. 5 is a side view, in partial section, of the articulation of the seat according to FIG. 2. FIG. 6 is a side view, in partial section, of the articulation of the connecting device on the support according to Figure 2 Figure 7 is a partial sectional side view of the connecting device, in use according to Figure 2

25 Description d'un mode particulier de réalisation 30 Sur la figure 1 et 2, Le siège articulé comporte un pied 22, sur lequel est fixé un support 7 en forme de U, comportant deux branches latérales 7a et 7b. Le support 7 constitue le châssis porteur d'une assise 5, située entre les branches 7a et 7b, et d'un dossier 6. L'assise 5 et le dossier 6 sont reliés ensemble par deux dispositifs de liaison 1 la et 1 lb, identiques et symétriques par rapport à l'assise 5. Les dispositifs de liaison l la et 1 lb constituent des suspensions, et des moyens de réglage du positionnement du centre de gravité de l'utilisateur/trice. Les dispositifs de liaison 1 la et l lb sont montés en rotation autour de deux axes de rotation la et lb, situés dans des logements 21a et 21b aux extrémités des branches latérales 7a et 7b du support 7. Les axes de rotation la et lb définissent un axe de rotation commun 1, représentant l'axe de rotation principal du siège en utilisation. L'assise 5 et le dossier 6 constituent ainsi avec les dispositifs de liaisons l la et 1 lb, un ensemble basculant monté à pivotement par rapport au support 7, autour de cet axe de rotation commun 1.  DESCRIPTION OF A PARTICULAR EMBODIMENT In FIGS. 1 and 2, the articulated seat comprises a foot 22 on which is fixed a U-shaped support 7, comprising two lateral branches 7a and 7b. The support 7 constitutes the support frame of a seat 5, located between the branches 7a and 7b, and a backrest 6. The seat 5 and the backrest 6 are connected together by two connecting devices 1a and 1b, identical and symmetrical with respect to the seat 5. The connecting devices la and 1 lb constitute suspensions, and means for adjusting the positioning of the center of gravity of the user. The connecting devices 1a and 1b are rotatably mounted around two axes of rotation 1a and 1b, located in housings 21a and 21b at the ends of the lateral branches 7a and 7b of the support 7. The axes of rotation 1a and 1b define a common axis of rotation 1, representing the main axis of rotation of the seat in use. The seat 5 and the backrest 6 thus constitute, with the connecting devices 11a and 11b, a rocker assembly pivotally mounted relative to the support 7, around this common axis of rotation 1.

Le support 7 peut être monté libre en rotation par un vérin pneumatique autour de l'axe vertical du pied 22, pour permettre une rotation pouvant atteindre 360 degrés du siège et un réglage en hauteur. Le support 7 peut avantageusement comporter des accoudoirs 10a et 10b, de préférence réglable en hauteur, respectivement solidaires des branches latérales 7a et 7b.  The support 7 can be rotatably mounted by a pneumatic cylinder around the vertical axis of the foot 22, to allow a rotation of up to 360 degrees of the seat and a height adjustment. The support 7 may advantageously comprise armrests 10a and 10b, preferably adjustable in height, respectively integral with the lateral branches 7a and 7b.

Les axes de rotation de l'assise 2a et 2b définissent un axe de rotation commun 2 représentants l'axe de rotation de l'assise 5. (figure 2)  The axes of rotation of the seat 2a and 2b define a common axis of rotation 2 representing the axis of rotation of the seat 5. (FIG. 2)

Les dispositifs de liaisons Il a et 11b étant identiques, ils comportent les mêmes éléments constitutifs et fonctionnent de façon indissociables pour obtenir le positionnement naturel recherché. Ainsi dans la description qui va suivre, les références sont faites par rapport au dispositif de liaison 1 la, mais la description s'applique de la même façon au dispositif de liaison 1lb.  Since the connecting devices 11a and 11b are identical, they have the same constituent elements and function inseparable to obtain the desired natural positioning. Thus, in the following description, the references are made with respect to the connection device 1a, but the description applies in the same way to the connecting device 11b.

Comme représenté sur la figure 6, le dispositif de liaison 1 la comporte, à son extrémité supérieure une articulation un axe la de section triangulaire, ayant deux surfaces inclinées 15a et 16a , et une troisième surface quasiment horizontale 17a. L'axe la est précontraint dans le logement 21a, par trois blocs de caoutchouc 18a, 19a et 20a. Le logement 21a est solidaire d'une extrémité supérieure du support 7a. Cet organe mécanique constitué du logement 21 a, des blocs de caoutchouc 18a, 19a et 20a et de l'axe la, a fonction de ressort de compression et de ressort de torsion, il permet une rotation, dans le sens positif et dans le sens négatif du dispositif de liaison i la sur l'axe la, et un débattement vertical h de l'axe la, dans son logement 21a.  As shown in Figure 6, the connecting device 1 has at its upper end a hinge axis la of triangular section, having two inclined surfaces 15a and 16a, and a third substantially horizontal surface 17a. The axis is prestressed in the housing 21a, by three rubber blocks 18a, 19a and 20a. The housing 21a is secured to an upper end of the support 7a. This mechanical member consisting of the housing 21 has rubber blocks 18a, 19a and 20a and the axis la, a function of compression spring and torsion spring, it allows a rotation, in the positive direction and in the direction negative of the connecting device i la on the axis la, and a vertical deflection h of the axis la, in its housing 21a.

-fr représente la force radiale exercée sur l'axe la, par le poids de l'utilisateur/trice sur l'assise 5. -fg représente la force de réaction des blocs caoutchouc 18a et 19a, à la force fr - ft représente la force de torsion exercée sur l'axe la par l'utilisateur/trice pendant les mouvements d'oscillation du dispositif de liaison 1 la sur l'axe la. - fm représente la force de réaction exercée par les blocs de caoutchouc 18a, 19a et 20a qui s'oppose au mouvement de torsion ft. Les forces ft et fm s'exercent dans les sens de rotation positif et négatif.  -fr represents the radial force exerted on the axis la, by the weight of the user on the seat 5. -fg represents the reaction force of the rubber blocks 18a and 19a, the force fr - ft represents the torsion force exerted on the axis la by the user during the oscillating movements of the connecting device 1a on the axis la. fm represents the reaction force exerted by the rubber blocks 18a, 19a and 20a which opposes the torsion movement ft. The forces ft and fm are exerted in the directions of positive and negative rotation.

La précontrainte des blocs caoutchouc 18a, 19a et 20a, autour de l'axe 1 a dans le logement 21a crée la force de réaction fg qui s'oppose à la force fr, et la force de réaction fin qui s'oppose à la force de torsion ft. En utilisation, les blocs caoutchouc 18a et 19a sont mis en pression par fr, et l'axe la s'abaisse de la dimension h. La dimension h est proportionnelle au poids de l'utilisateur/trice. La force fr augmente la force fm . Les forces fr et fm augmentent proportionnellement avec le poids de l'utilisateur/trice.  The prestressing of the rubber blocks 18a, 19a and 20a, about the axis 1a in the housing 21a creates the reaction force fg which opposes the force fr, and the fine reaction force which opposes the force of twist ft. In use, the rubber blocks 18a and 19a are pressurized by fr, and the axis la is lowered by the dimension h. The dimension h is proportional to the weight of the user. The force en increases the force fm. The forces fr and fm increase proportionally with the weight of the user.

Ce mécanisme constitue un moyen de compensation de la résistance au mouvement de bascule par le poids de l'utilisateur/trice.  This mechanism is a means of compensating the resistance to the rocking movement by the weight of the user.

Comme représenté sur la figure 5, l'assise 5 est solidaire de l'axe 2a par l'élément de jonction 9a. L'axe 2a est de section triangulaire, il a deux surfaces inclinées 30a et 3la et une troisième surface quasiment horizontale 32a. L'axe 2a est précontraint dans le logement 25a, par trois blocs de caoutchouc 26a, 27a et 28a. Le logement 25a est solidaire du dispositif de liaison 11a. Le système d'articulation de l'assise 5 au dispositif de liaison Il a, est similaire à l'articulation du dispositif de liaison lia à la branche du support 7a. Les mêmes forces fr, ft, fm et fg, y sont présentes. L'assise 5 oscille de quelques degrés; autour de son axe 2a sur le dispositif de liaison 1 la. Ce mécanisme constitue un moyen de compensation de l'inertie des mouvements d'oscillation de l'assise 5, par le poids de l'utilisateur/trice.  As shown in Figure 5, the seat 5 is secured to the axis 2a by the connecting element 9a. The axis 2a is of triangular section, it has two inclined surfaces 30a and 31a and a third substantially horizontal surface 32a. The axis 2a is prestressed in the housing 25a, by three rubber blocks 26a, 27a and 28a. The housing 25a is secured to the connecting device 11a. The articulation system of the seat 5 to the connecting device It has, is similar to the articulation of the connecting device 11a to the support branch 7a. The same forces fr, ft, fm and fg, are present there. The seat 5 oscillates a few degrees; around its axis 2a on the connecting device 1a. This mechanism is a means of compensation for the inertia of the oscillation movements of the seat 5, by the weight of the user.

L'ensemble du dispositif de liaison 1 la et des deux axes la et 2a constitue un système pendulaire à double suspension  The entire connecting device 1 la and two axes la and 2a is a pendulum system with double suspension

En utilisation,( figure 7) la force ft , exerce un mouvement de rotation du dispositif de liaison 1 la vers le bas . Cette rotation s'effectue de quelques degrés et proportionnellement à la charge sur l'assise 5. Ce dispositif constitue un moyen de recentrage du centre de gravité de l'utilisateur sur l'axe la. Ce recentrage du centre de gravité permet des changements fréquents de posture ou de positionnement de l'utilisateur/trice sur le siège, et prévient avantageusement des fatigues dorsales.  In use (FIG. 7) the force ft exerts a rotational movement of the connecting device 1 la downwards. This rotation takes place a few degrees and proportionally to the load on the seat 5. This device is a means of refocusing the center of gravity of the user on the axis la. This centering of the center of gravity allows frequent changes of posture or positioning of the user on the seat, and advantageously prevents back fatigue.

Afin de mieux ajuster ce positionnement, le dossier 6 sera de préférence réglable d'avant en arrière par coulissement sur son levier 29a.  In order to better adjust this positioning, the backrest 6 will preferably be adjustable from front to back by sliding on its lever 29a.

Sur la figure 7, Le levier du dossier 29a est articulé à pivotement par l'axe 3a sur le dispositif de liaison 1 la. Un ressort de rappel 4a est fixé en sa partie inférieure sur le levier 29a, et en sa partie supérieure au support de l'accoudoir 10a, solidaire du support 7a. Le ressort 4a positionne le levier 29a, en appui, sur la butée 14a. La butée 14a est solidaire du dispositif de liaison 1 la. Le ressort 4a exerce une force qui s'oppose au poids de l'utilisateur/trice sur le dossier 6.  In Figure 7, the backrest lever 29a is pivotally articulated by the axis 3a on the connecting device 1a. A return spring 4a is fixed in its lower part on the lever 29a, and in its upper part to the support of the armrest 10a, secured to the support 7a. The spring 4a positions the lever 29a, bearing on the stop 14a. The abutment 14a is secured to the connecting device 1a. The spring 4a exerts a force that opposes the weight of the user on the backrest 6.

Quand l'utilisateur/trice s'incline en arrière il exerce une pression proportionnelle à son poids sur le dossier 6.  When the user tilts backwards he exerts a pressure proportional to his weight on the backrest 6.

La force ft fait basculer le dispositif de liaison l la vers le bas, et abaisse l'axe 3a et le levier 29 a d'une valeur h'. Ce déplacement vertical h'est proportionnel au poids de l'utilisateur/trice, et augmente la tension du ressort 4a : La valeur de h' est proportionnelle à la tension du ressort 4a. Ce mécanisme constitue un moyen de compensation des mouvements de bascule du dossier 6 par le poids de l'utilisateur/trice, et constitue un préréglage automatique de l'inclinaison du dossier avec le poids de l'utilisateur/trice. La dimension h créée par la force fr, figure contribue également, et dans une moindre mesure à augmenter la tension du ressort 4a proportionnellement au poids de l'utilisateur/trice.15  The force ft tilts the connecting device down, and lowers the axis 3a and the lever 29 has a value h '. This vertical movement is proportional to the weight of the user, and increases the tension of the spring 4a: The value of h 'is proportional to the tension of the spring 4a. This mechanism provides a means of compensation for the movements of the rocker backrest 6 by the weight of the user, and is an automatic preset of the inclination of the backrest with the weight of the user / trice. The dimension h created by the force en, figure also contributes, and to a lesser extent to increase the tension of the spring 4a in proportion to the weight of the user.15

Claims (3)

REVENDICATIONS 1. Siège articulé comportant : -un pied (22), une assise (5) ,un dossier (6), -un support (7) en forme de U, fixé au pied (22) comportant deux branches latérales (7a et 7b) entre lesquelles est disposée l'assise (5), deux dispositifs de liaisons (lia et 1 lb), connectant l'assise (5) et le dossier (6), et montés à pivotement par rapport au support (7) autour d'un axe de rotation principal (1). siège caractérisé en ce que : -l'axe de rotation principal (1) comporte deux axes (la) et (lb) de section triangulaire, formant chacun deux plans inclinés dans un plan vertical (15a),(15b) et (16a),(16b) et une surface quasiment horizontale (17a)et(17b).. -chaque axe est précontraint par trois blocs de caoutchouc (18a), (19a), et (20a), dans un logement (21a) solidaire de l'extrémité d'une branche du support (7).  1. Articulated seat comprising: -a foot (22), a seat (5), a backrest (6), -a support (7) U-shaped, fixed to the foot (22) having two lateral branches (7a and 7b ) between which is arranged the seat (5), two connecting devices (11a and 11b), connecting the seat (5) and the backrest (6), and pivotally mounted relative to the support (7) around a main axis of rotation (1). seat characterized in that: the main axis of rotation (1) comprises two axes (la) and (Ib) of triangular section, each forming two planes inclined in a vertical plane (15a), (15b) and (16a) , (16b) and a substantially horizontal surface (17a) and (17b) .. -each axis is prestressed by three blocks of rubber (18a), (19a), and (20a), in a housing (21a) integral with the end of a branch of the support (7). 2. Siège selon la revendication 1, caractérisé en ce que l'axe de rotation (2) de l'assise (5) comporte deux axes (2a) et (2b) de section triangulaire formant chacun deux surfaces inclinés (30a),(30b) et (31a), (3 lb), et une surface quasiment horizontale (32a),(32b). -chaque axe est précontraint par trois éléments de caoutchouc (26a), (27a) et (28a) dans un logement (25a) solidaire du dispositif de jonction (1 la)..  2. Seat according to claim 1, characterized in that the axis of rotation (2) of the seat (5) comprises two axes (2a) and (2b) of triangular section each forming two inclined surfaces (30a), ( 30b) and (31a), (3b), and a substantially horizontal surface (32a), (32b). each axis is prestressed by three rubber elements (26a), (27a) and (28a) in a housing (25a) integral with the connecting device (1a). 3. Siège selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend un ressort (4a) de rappel du dossier (6), fixé à la partie arrière de l'accoudoir (l0a), solidaire du support (7), et à un levier (29a) qui relie en rotation le dossier (6) au dispositif de liaison (11a) de façon à compenser l'effet d'une force (ft) exercée sur l'assise(5). 8  3. Seat according to any one of the preceding claims, characterized in that it comprises a spring (4a) for returning the backrest (6), fixed to the rear part of the armrest (10a), integral with the support (7). ), and a lever (29a) which rotatably connects the backrest (6) to the connecting device (11a) so as to compensate for the effect of a force (ft) exerted on the seat (5). 8
FR0511380A 2005-11-09 2005-11-09 Articulated seat for use in office, has base and backrest connected by two identical connecting devices, adjusting unit for adjusting center of gravity position of user, and tilting assembly mounted at rotation with respect to support Pending FR2892905A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0511380A FR2892905A1 (en) 2005-11-09 2005-11-09 Articulated seat for use in office, has base and backrest connected by two identical connecting devices, adjusting unit for adjusting center of gravity position of user, and tilting assembly mounted at rotation with respect to support

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FR0511380A FR2892905A1 (en) 2005-11-09 2005-11-09 Articulated seat for use in office, has base and backrest connected by two identical connecting devices, adjusting unit for adjusting center of gravity position of user, and tilting assembly mounted at rotation with respect to support

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FR2892905A1 true FR2892905A1 (en) 2007-05-11

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FR0511380A Pending FR2892905A1 (en) 2005-11-09 2005-11-09 Articulated seat for use in office, has base and backrest connected by two identical connecting devices, adjusting unit for adjusting center of gravity position of user, and tilting assembly mounted at rotation with respect to support

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011110753A1 (en) 2010-03-09 2011-09-15 Didier Monard Pendular seat having a pivotable connection for the movements of the seat portion and the backrest

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB241462A (en) * 1925-04-17 1925-10-22 Int Motor Co Improvements in cushioning supports for a seat or the like
FR1159915A (en) * 1956-10-22 1958-07-03 Elastic couplings
US2856982A (en) * 1957-04-10 1958-10-21 Casimir E Leja Resilient supports
US2910112A (en) * 1956-01-31 1959-10-27 Ralph P Ogden Resilient vehicle seat mounting and elastic joint therefor
US2985227A (en) * 1957-09-30 1961-05-23 Komfort King Seats Inc Resilient seat support
CH681772A5 (en) * 1990-12-10 1993-05-28 Zesar Ag Retainer for chair seat with coupled support plate - permits forwards and backwards tilt of seat and involves holder plate at upper end of vertical column
US6217114B1 (en) * 1995-12-21 2001-04-17 Degonda-Rehab Sa Stationary or wheeled inclinable seat arrangement, in particular for the sick or handicapped
EP1327401A2 (en) * 2002-01-11 2003-07-16 Walter Frese Tiltable seat assembly
FR2862500A1 (en) * 2003-11-20 2005-05-27 Didier Monard Articulated seat e.g. office seat, has connection devices each with sliding axle integrated with rotation axle to automatically position center of gravity of assembly including base, backrest and devices, at level of common rotation axis

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB241462A (en) * 1925-04-17 1925-10-22 Int Motor Co Improvements in cushioning supports for a seat or the like
US2910112A (en) * 1956-01-31 1959-10-27 Ralph P Ogden Resilient vehicle seat mounting and elastic joint therefor
FR1159915A (en) * 1956-10-22 1958-07-03 Elastic couplings
US2856982A (en) * 1957-04-10 1958-10-21 Casimir E Leja Resilient supports
US2985227A (en) * 1957-09-30 1961-05-23 Komfort King Seats Inc Resilient seat support
CH681772A5 (en) * 1990-12-10 1993-05-28 Zesar Ag Retainer for chair seat with coupled support plate - permits forwards and backwards tilt of seat and involves holder plate at upper end of vertical column
US6217114B1 (en) * 1995-12-21 2001-04-17 Degonda-Rehab Sa Stationary or wheeled inclinable seat arrangement, in particular for the sick or handicapped
EP1327401A2 (en) * 2002-01-11 2003-07-16 Walter Frese Tiltable seat assembly
FR2862500A1 (en) * 2003-11-20 2005-05-27 Didier Monard Articulated seat e.g. office seat, has connection devices each with sliding axle integrated with rotation axle to automatically position center of gravity of assembly including base, backrest and devices, at level of common rotation axis
WO2005051132A1 (en) 2003-11-20 2005-06-09 Didier Monard Automatically positioned articulated seat

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011110753A1 (en) 2010-03-09 2011-09-15 Didier Monard Pendular seat having a pivotable connection for the movements of the seat portion and the backrest
FR2957230A1 (en) * 2010-03-09 2011-09-16 Didier Marc Monard Hinged seat, has lateral supports including rotation axles articulating quadrilaterals, where each quadrilateral comprises set of branches hinged in rotation with respect to another set of branches by rotation axle
FR2968527A1 (en) * 2010-03-09 2012-06-15 Didier Monard REGULATION OF THE ROCKET MOVEMENT OF A PENDULAR SEAT

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