WO2011110753A1 - Pendular seat having a pivotable connection for the movements of the seat portion and the backrest - Google Patents

Pendular seat having a pivotable connection for the movements of the seat portion and the backrest Download PDF

Info

Publication number
WO2011110753A1
WO2011110753A1 PCT/FR2011/000112 FR2011000112W WO2011110753A1 WO 2011110753 A1 WO2011110753 A1 WO 2011110753A1 FR 2011000112 W FR2011000112 W FR 2011000112W WO 2011110753 A1 WO2011110753 A1 WO 2011110753A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat
rotation
branch
axis
pivot
Prior art date
Application number
PCT/FR2011/000112
Other languages
French (fr)
Inventor
Didier Monard
Original Assignee
Didier Monard
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 Didier Monard filed Critical Didier Monard
Priority to EP11714345A priority Critical patent/EP2571399A1/en
Publication of WO2011110753A1 publication Critical patent/WO2011110753A1/en

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
    • A47C1/03272—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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03288—Reclining 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

Definitions

  • Pendulum seat articulating the movements of the seat and backrest
  • the invention relates to an articulated seat. More particularly, the present invention relates to a seat that automatically marries the positions of its user, without the need for manipulation by this user.
  • a seat is commonly composed of a seat and a folder delimiting between them a space 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.
  • 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 / user, generally speaking, at least one of the elements is secured to a frame, in order to confer elements relative mobility relative to each other.
  • 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.
  • 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.
  • 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 means compensating for rocking movements according to the weight of the user.
  • the document FR 2 892 905 also describes an articulated seat whose seat is hinged in pendulum mode, but the adjustment of the resistance to the inclination of the backrest has the disadvantage of being manual, and the axis of pivoting of the backrest positioned under the seat limits the amplitude of the inclination thereof.
  • the object of the present invention is to propose an articulated seat which does not have these disadvantages and, in particular, an articulated seat offering a multitude of positions, in use, by the combination of the pendular movements of the seat and the backrest around an axis of rotation and the synchronous mechanism connecting the seat to the backrest.
  • This is made possible in particular by the fact that the seat is hinged in a pendular fashion by a main axis of rotation on which two articulated quadrilaterals linked to the seat and the backrest synchronize with the pendulum movement the inclination of the seat and back by gravity.
  • this object is achieved by a seat according to the appended claims and more particularly, by the fact that the articulated seat comprising at least one foot, a seat, a back, two lateral supports connected to the foot between which are arranged the seat and the backrest, which is characterized in that two elastic elements attached to the upper part of each lateral support each respectively comprising a first and a second axis of rotation, which articulate in rotation two quadrilaterals positioned symmetrically on each side of the seat.
  • each quadrilateral comprises four branches: a first branch articulated in rotation relative to the lateral support around one of said axes of rotation, and to the second branch around a third axis of rotation, a second branch connected to the seated, and articulated in rotation relative to the third branch about a fourth axis of rotation, a third branch, linked to the backrest, and articulated in rotation relative to the fourth branch about a fifth axis of rotation positioned above said fourth axis of rotation, and a fourth branch articulated in rotation relative to the first branch about a sixth axis of rotation.
  • said sixth axis of rotation coincides with one of said first or second axes of rotation.
  • the ratio of the dimensions of the height of the quadrilateral and said third branch of the quadrilateral is of a value between 1.7 and 2.4.
  • the ratio of the dimensions of said first and fourth branches of the quadrilateral is a value between 0.8 and 1.3.
  • the ratio between the sum of the dimensions of the first and fourth branches and the sum of the dimensions of the second and third branches of the quadrilateral is of a value between 0.8 and 1.3.
  • the seat according to the invention comprises an elastic element comprising at least two elastic means in a housing, of a width substantially greater than the section of said housing, arranged one above the other, horizontally positioning therebetween, a pivot pivoting about one of said first and second axes of rotation.
  • Said axis of rotation has at each of its ends two flanges in contact with their central portion with the rubber elements and of dimensions substantially greater than the section of the housing.
  • the seat according to the invention comprises an elastic element comprising at least two elastic means in a housing and a pivot integral with said first branch, pivoting about an axis, and positioned between said at least two means resilient, said pivot having at least two re-entrant angles, in contact with the at least two elastic means.
  • the section of said pivot comprises an upper part wider than its lower part, these parts defining by their lateral faces two re-entrant angles, the lateral faces of the upper part of said pivot are inclined at more than 45 degrees, and / or the parts upper and lower of said pivot are of a substantially equal height.
  • Said housing is parallel to the load support axis, said housing being attached to a lateral support, and said pivot being integral with said first branch of the quadrilateral.
  • the seat according to the present invention comprises a manual adjustment means comprising a return means fixed on one side under the seat of said seat, and on the other side to said support or said foot.
  • the seat according to the invention comprises a device for locking the rocking movement of the seat.
  • Figure 1 is a front view of a first embodiment of the invention.
  • Figure 2 shows a side view of the quadrilateral in a replicated position.
  • Figure 3 shows a side view of the quadrilateral of Figure 2 in an inclined position.
  • Figures 4a and 4b show a side view and front, in partial section, of an elastic member, connecting a branch of the quadrilateral of Figure 2 on the support.
  • Figures 5a and 5b show a second particular embodiment of the present invention.
  • FIG. 6 shows a third embodiment of the present invention.
  • the articulated seat comprises a foot 13, on which is fixed a support 7 having two branches 7a and 7b, which is the carrier frame of a seat 12 and a file 6.
  • the axes of rotation (Ga) and (Gb) define a common axis of rotation (G), representing the main axis of rotation of the seat in use.
  • the two quadrilaterals (ABCD) and (ABCD) 'with the seat 12 and the backrest 6 thus constitute an assembly pivotally mounted relative to the support 7, around this common axis of rotation. (BOY WUT).
  • the arrangement of the seat 12 positioned under the main axis of rotation (G) is in pendulum suspension, in order to favor the positioning of the center of gravity of the user / user close to the main axis of rotation (G) when the seat is in the rest position, the backrest 6 being in the raised position.
  • the axes (A), (B), (C) and (D) are horizontal, and constitute the rotational pivot axes of the quadrilateral branches (ABCD).
  • Each of the axes (A), (B) and (C) can consist of either a single element, connecting at their end, the two quadrilaterals (ABCD) and (ABCD) 'or two symmetrical elements, each connected to a quadrilateral.
  • the axis (D) consists of two elements (D) and (D) '.
  • the branches DA and CD are positioned on the inner side of the support 7a.
  • These said branches can also, without affecting the operation of the mechanism, be arranged on the outer side or inside said support. These said branches are advantageously arranged together on one side or the other of the support 7a to avoid, in use a lateral twist of the pivot 32a.
  • the seat may have several feet, this or these feet being able to position the main axis of rotation (G).
  • the pivot 32a pivots around the axis G.
  • the quadrilateral (ABCD) is different from a parallelogram. It is convex, has four articulated branches AB, BC, CD and DA, in use, it is deformable.
  • the branch AB is linked to the base 12 and the branch BC is linked to the file 6.
  • the first branch DA is articulated in rotation to the support 7a by the pivot 32a, and the second branch AB by the axis (A).
  • the second branch AB being connected to the seat 12, is articulated in rotation to the third branch BC by the axis (B) which is positioned at the lower part of the backrest 6.
  • the third branch BC being linked to the backrest 6 is articulated in rotation by the axis (C), located above (B), the fourth branch CD.
  • the fourth branch CD is articulated to the first branch DA by the axis
  • the axis (A) is positioned on the front half of the seat 12.
  • the axis (D), being positioned at the upper part of the branch DA, is substantially coincident with the axis (Ga).
  • the angle (ABC) is the angle formed by the backrest 6 and the seat 12.
  • the angle (DAB) is the angle formed by the seat 12 and the DA branch.
  • a stop device preferably located between the seat 12 and the backrest 6, close to the axis (B), limits the closure of the angle (ABC) substantially to 90 degrees, and limits the maximum opening of this angle.
  • This maximum opening is of a variable value, according to the application of the invention, and can reach 180 degrees.
  • the angle (ABC) opens substantially 90 degrees, and the angle (DAB) closes substantially 30 degrees.
  • the dimension of a branch is defined by the distance that separates the axes that name it.
  • the axis (D) is positioned at the upper part of the branch DA so that the quadrilateral can extend sufficiently along its diagonal AC, to obtain a maximum inclination of the folder.
  • the height DH of the quadrilateral (ABCD) comes from the axis (D) and is perpendicular to AB.
  • the height dimension DH of the quadrilateral has a value substantially twice the size of the branch BC of DH
  • the ratio of the dimensions of the branches D is between 0.8 and 1.3.
  • the sum of the dimensions of the branches AB and BC is substantially equal to the sum of the branches CD and DA.
  • the ratio (CD + DA) / AB + BC) is between 0.8 and 1.3. These last two values are defined regardless of the degree of inclination of the file 6.
  • the axis (A) is positioned on the front half of the seat 12.
  • the CD branch being articulated in rotation by the axis (D) near the axis of rotation (Ga), and by the axis (C) on the lower part of the backrest 6, allows to maintain the lower back of the user / user substantially at the same distance from said axis of rotation, regardless of the degree of inclination of the file 6.
  • the backrest 6 is tilted back, the quadrilateral (ABCD) extends along its diagonal AC, a transfer of a portion of the weight of the user / user is from the seat 12 to the backrest 6, which pivots around the axes (B) and (C) the angle (ABC) opens, the angle (DAB) closes and the seat 12, moves forward.
  • This displacement of the seat 12 forward is compensated by a rocker of the branch DA forwardly according to the angle (a).
  • These movements are obtained by repositioning, by gravity, the center of gravity of the user / user near the main axis of rotation of the seat (G). This combination of movements offers a multitude of positions for the user / user, whose weight is balanced between the seat 12 and the backrest 6 whatever the inclination of the latter.
  • the axis (A) is positioned on the front half of the seat 12.
  • the weight of the user is mainly based on the branch AB and exerts on the axis (B), a restoring force of the file 6 by leveraging the branch BC around its axis (C).
  • This restoring force is increasing on the one hand with the dipole of the branch DA of the quadrilateral (ABCD) which reduces the value of the angle (a) and on the other hand with the deployment of this quadrilateral by the lengthening of its AC diagonal which increases the value of the angle (ABC).
  • the seat 12 is articulated in double pendulum suspension to the support 7a by the pivot 32a and the axis (A), so the user's center of gravity is positioned near the main axis of rotation (G) by gravity.
  • the dimension of the branch BC of the quadrilateral is defined so that the restoring force exerted by the branch AB on the axis (B) balances the weight of the user on the backrest 6 and on the seat 12 whatever the degree of inclination of the backrest 6 with respect to the ground.
  • the elastic element E is composed of a housing 14a, containing at least two rubber elements 15a and 16a. This said elastic element is fixed to the upper part of the branch 7a by its housing 14a.
  • the elastic element E constitutes a means of damping the oscillatory movements of the branch DA of the quadrilateral (ABCD) around a pivot 32a: the elastic element E operates as a torsion spring, and limits the movement of the movements oscillation up and down the DA branch.
  • the rubber members 15a and 16a are disposed one above the other to position the pivot 32a therebetween.
  • the pivot 32a is fixed to the upper part of the branch DA. This pivot is flat and in contact by its two upper and lower surfaces with the rubber elements 15a and 16a.
  • Two side flanges 17a and 18a are attached to each end of the pivot 32a. These flanges are of a height and a width substantially greater than the section of the housing 14a, they contribute to the lateral positioning of the rubber elements 15a, 16a and the pivot 32a in the housing 14a.
  • the width of the pivot 32a is substantially greater than the width of the housing 14a so that the side flanges 17a and 18a are not in contact with the housing 14a.
  • the rubber elements 15a and 16a are in contact through their anterior parts and posterior with their housing 14a, and are in contact by their central portion with the side flanges 17a and 18a. This contact surface is limited to their central parts, in order to limit the common contact surface between the lateral flanges 17a and 18a and the rubber elements 15a and 16a.
  • One of the faces of the housing 14a is advantageously removable, to facilitate the mounting of the pivot 32a and the rubber elements 15a and 16a within said housing.
  • the rubber elements 15a and 16a are slightly compressed vertically during their assembly in their housing 14a in order to position the pivot 32a and to oppose an initial resistance to the oscillation movement of the branch DA integral with the pivot 32a.
  • these rubber elements 15a and 16a will be mounted in their housing by vulcanization.
  • the elastic element E positions the pivot 32a substantially horizontally. In use, depending on the positioning of the user, the branch
  • the branch DA can be positioned inside the branch 7a.
  • the lower rubber member 16a and the base of the housing 14a are split into two parts, or openwork, to allow the passage of the DA branch inside the support 7a.
  • branch DA can be positioned either inside or outside the support branch 7a, one of the two lateral flanges 17a or 18a is integral with the branch DA or formed by the upper part of this branch. .
  • FIG. 5a represents a second embodiment of the invention, in which the elastic element F comprises a damping means which comprises three elastic means 19a, 20a and 21a in a housing 14a, and a support pivot 22a, pendular load, advantageously of polygonal section, pivoting about an axis (G) and positioned between the three elastic means 19a, 20a and 21a.
  • the said pivot of support is secured to the DA branch and comprises at least two reentrant angles X and Y in contact with the two elastic means 20a and 21a.
  • This damping means may comprise only the two elastic means 20a and 21a to ensure the damping of a pendular load.
  • Figure 5b shows the elastic member F of Figure 5a in use.
  • the weight of the user / user on the seat 12 of the seat exerts, via the pivot 22a, a downward pressure of the polymer blocks 20a and 21a. This pressure is proportional to the weight of the user and is directed downwards.
  • the pendulum movement of the seat drives the pivot 22a between the elastic means which exerts a restoring force.
  • the pivot section 22a has an upper portion wider than its lower part, the latter defining by their lateral faces two re-entrant angles X and Y. These faces and the upper faces of the pivot 22a are in contact by their respective lateral surfaces with polymer blocks 19a, 20a and 21a and are contained in a housing 14a which is parallel to the axis (G), this housing being attachable to the lateral branch 7a, and the pivot 22a being attached to the branch DA which is connected to the seat 12.
  • the lateral faces of the upper part of the pivot 22a are inclined at more than 45 degrees relative to the horizontal, and the upper and lower parts of the pivot 22a are of a substantially equal height.
  • the seat is provided with a manual adjustment means T and a locking device L of the rocking movement of the seat.
  • the manual adjustment means comprises a return element T, for example of the spring type, fixed on one side under the seat 12 of the seat, and on the other side to the support 7 or foot 13.
  • the means T compensates for the weight exerted on the backrest 6 of the seat, thus allowing a return to the initial position when the user stands up.
  • This seat may comprise a stop means B limiting the return movement of the spring.
  • the seat 12 comprises an element H having at least one part in a circular arc sliding relative to the support 7 or the foot 13 during the rocking movement of the seat.
  • a locking means L pivoting on its axis (S) advantageously helically threaded, for example of the lever type, makes it possible to block and unblock, by pinching the element H, the inclination of the seat in a certain direction. position desired by the user.
  • a control wheel M at one of the ends of the return means T may advantageously make it possible to manually adjust the voltage of said means T.
  • the axes of rotation (G) and (D) are merged into a single axis articulated on each branch of the support 7a and 7b.
  • this third embodiment may be partially advantageously combined with the elastic elements E or F, the latter being able to substitute the return means T.
  • the support 7 can be rotatably mounted by a pneumatic cylinder around the vertical axis of the foot, to allow a rotation of up to 360 degrees of the seat and a height adjustment.
  • This support 7 may advantageously comprise armrests 10a and 10b, preferably adjustable in height, respectively integral with the lateral branches 7a and 7b.
  • the seat may advantageously comprise a footrest articulated to the mechanism of the seat or having an independent mechanism.
  • this seat can be used as office chair, work station, seat for disabled or as a relaxation seat, because it allows a great flexibility of natural positions of its user.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)

Abstract

The present invention relates to a hinged seat providing for numerous positions, during use, by combining the pendular motion of the seat portion and the backrest about an axis of rotation, and the synchronous mechanism connecting the seat portion to the backrest. In particular, the seat according to the invention is hinged in the pendular mode by a principal axis of rotation (Ga) on which two hinged quadrilaterals (ABCD), connected to the seat portion (12) and to the back rest (6) of the seat, synchronize by gravity the motion of inclination of the seat portion (12) and of the back rest (6) with the pendular motion.

Description

Siège pendulaire articulant les mouvements de l'assise et du dossier  Pendulum seat articulating the movements of the seat and backrest
Domaine technique de l'invention L'invention concerne un siège articulé. Plus particulièrement, la présente invention concerne un siège qui épouse automatiquement les positions de son utilisateur, sans nécessité de manipulations de la part de cet utilisateur. Technical Field of the Invention The invention relates to an articulated seat. More particularly, the present invention relates to a seat that automatically marries the positions of its user, without the need for manipulation by this user.
Etat de la technique State of the art
Un siège est couramment composé d'une assise et d'un dossier délimitant entre eux un espace pour recevoir le corps de l 'utilisateur/utilisatrice. 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/utilisatrice. 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/utilisatrice, de 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. A seat is commonly composed of a seat and a folder delimiting between them a space 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 / user, generally speaking, at least one of the elements is secured to a frame, in order to confer elements relative mobility relative to each other.
II 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 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.  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.
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.  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.
11 a également été proposé des sièges de bureau sur lesquels l'assise et le dossier ont un mouvement synchronisé à l'aide de leviers et de ressort de rappel. Il a également été proposé des sièges de relaxation sur lesquels le dossier était articulé à l'arrière de l'assise et au support par deux axes distincts, l'assise coulissant vers l'avant à l'aide d'un guide fixé sur l'avant du support. It has also been proposed office chairs on which the seat and the backrest have a synchronized movement using levers and return spring. It has also been proposed relaxation seats on which the backrest was articulated to the back of the seat and the support by two separate axes, the seat sliding forward with the aid of a guide attached to the seat. 'before the support.
Il a également été proposé des sièges optimisant le positionnement de l 'utilisateur/utilisatrice 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/utilisatrice 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/utilisatrices.  It has also been proposed seats optimizing the positioning of the user / user on the seat, positioning its center of gravity near an axis of rotation. This kind of device thus makes it possible to rotate the entire backrest and seat to more easily accompany the movements of the user / 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.
Par conséquent, le siège devenait trop mobile et instable pour les utilisateurs/utilisatrices les plus lourds.  As a result, the seat became too mobile and unstable for the heaviest users.
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/utilisatrice.  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 means compensating for rocking movements according to the weight of the user.
Le document FR 2 892 905 décrit aussi un siège articulé dont l'assise est articulée en mode pendulaire, mais le réglage de la résistance à l'inclinaison du dossier présente l'inconvénient d'être manuel, et l'axe de pivotement du dossier positionné sous l'assise limite l'amplitude de l'inclinaison de celui-ci.  The document FR 2 892 905 also describes an articulated seat whose seat is hinged in pendulum mode, but the adjustment of the resistance to the inclination of the backrest has the disadvantage of being manual, and the axis of pivoting of the backrest positioned under the seat limits the amplitude of the inclination thereof.
Objet de l'invention L'objet de la présente invention est de proposer un siège articulé ne présentant pas ces inconvénients et, en particulier, un siège articulé offrant une multitude de positionnements, en utilisation, par la combinaison des mouvements pendulaires de l'assise et du dossier autour d'un axe de rotation et du mécanisme synchrone connectant l'assise au dossier. Cela est rendu possible en particulier par le fait que le siège est articulé en mode pendulaire par un axe de rotation principal sur lequel deux quadrilatères articulés liés à l'assise et au dossier synchronisent avec le mouvement pendulaire les mouvements d'inclinaison de l'assise et du dossier par gravité. OBJECT OF THE INVENTION The object of the present invention is to propose an articulated seat which does not have these disadvantages and, in particular, an articulated seat offering a multitude of positions, in use, by the combination of the pendular movements of the seat and the backrest around an axis of rotation and the synchronous mechanism connecting the seat to the backrest. This is made possible in particular by the fact that the seat is hinged in a pendular fashion by a main axis of rotation on which two articulated quadrilaterals linked to the seat and the backrest synchronize with the pendulum movement the inclination of the seat and back by gravity.
En particulier, selon un premier mode de réalisation de l'invention, ce but est atteint par un siège selon les revendications annexées et plus particulièrement, par le fait que, le siège articulé comportant au moins un pied, une assise, un dossier, deux supports latéraux liés au pied entre lesquels sont disposés l'assise et le dossier, qui est caractérisé en ce que deux éléments élastiques fixés à la partie supérieure de chaque support latéral comportant chacun respectivement un premier et un second axe de rotation, qui articulent en rotation deux quadrilatères positionnés symétriquement de chaque coté de l'assise. En particulier, chaque quadrilatère comporte quatre branches : une première branche articulée en rotation par rapport au support latéral autour d'un desdits axes de rotation, et à la deuxième branche autour d'un troisième axe de rotation, une deuxième branche liée à l'assise, et articulée en rotation par rapport à la troisième branche autour d'un quatrième axe de rotation, une troisième branche, liée au dossier, et articulée en rotation par rapport à la quatrième branche autour d'un cinquième axe de rotation positionné au dessus dudit quatrième axe de rotation, et une quatrième branche articulée en rotation par rapport à la première branche autour d'un sixième axe de rotation.  In particular, according to a first embodiment of the invention, this object is achieved by a seat according to the appended claims and more particularly, by the fact that the articulated seat comprising at least one foot, a seat, a back, two lateral supports connected to the foot between which are arranged the seat and the backrest, which is characterized in that two elastic elements attached to the upper part of each lateral support each respectively comprising a first and a second axis of rotation, which articulate in rotation two quadrilaterals positioned symmetrically on each side of the seat. In particular, each quadrilateral comprises four branches: a first branch articulated in rotation relative to the lateral support around one of said axes of rotation, and to the second branch around a third axis of rotation, a second branch connected to the seated, and articulated in rotation relative to the third branch about a fourth axis of rotation, a third branch, linked to the backrest, and articulated in rotation relative to the fourth branch about a fifth axis of rotation positioned above said fourth axis of rotation, and a fourth branch articulated in rotation relative to the first branch about a sixth axis of rotation.
Avantageusement, ledit sixième axe de rotation est confondu avec l'un desdits premier ou second axes de rotation.  Advantageously, said sixth axis of rotation coincides with one of said first or second axes of rotation.
Selon un autre mode de réalisation de la présente invention, le rapport des dimensions de la hauteur du quadrilatère et de ladite troisième branche du quadrilatère est d'une valeur comprise entre 1,7 et 2,4.  According to another embodiment of the present invention, the ratio of the dimensions of the height of the quadrilateral and said third branch of the quadrilateral is of a value between 1.7 and 2.4.
Selon un autre mode de réalisation de l'invention, le rapport des dimensions desdites première et quatrième branches du quadrilatère est d'une valeur située comprise entre 0,8 et 1,3.  According to another embodiment of the invention, the ratio of the dimensions of said first and fourth branches of the quadrilateral is a value between 0.8 and 1.3.
Selon un autre mode de réalisation, le rapport entre la somme des dimensions des première et quatrième branches et la somme des dimensions des deuxième et troisième branches du quadrilatère est d'une valeur comprise entre 0,8 et 1,3.  According to another embodiment, the ratio between the sum of the dimensions of the first and fourth branches and the sum of the dimensions of the second and third branches of the quadrilateral is of a value between 0.8 and 1.3.
Selon un autre mode de réalisation ledit troisième axe de rotation est positionné sur la moitié antérieure de l'assise. Selon un autre mode de réalisation, le siège selon l'invention comporte un élément élastique comportant au moins deux moyens élastiques dans un logement, d'une largeur sensiblement supérieure à la section dudit logement, disposés l'un au dessus de l'autre, positionnant horizontalement entre eux deux, un pivot pivotant autour d'un desdits premier et second axes de rotation. Ledit axe de rotation comporte à chacune de ses extrémités deux flasques en contact par leur partie centrale avec les éléments de caoutchouc et de dimensions sensiblement supérieures à la section du logement. According to another embodiment said third axis of rotation is positioned on the front half of the seat. According to another embodiment, the seat according to the invention comprises an elastic element comprising at least two elastic means in a housing, of a width substantially greater than the section of said housing, arranged one above the other, horizontally positioning therebetween, a pivot pivoting about one of said first and second axes of rotation. Said axis of rotation has at each of its ends two flanges in contact with their central portion with the rubber elements and of dimensions substantially greater than the section of the housing.
Selon un autre mode de réalisation, le siège selon l'invention comporte un élément élastique comportant au moins deux moyens élastiques dans un logement et un pivot solidaire de ladite première branche, pivotant autour d'un axe, et positionné entre lesdits au moins deux moyens élastiques, ledit pivot comportant au moins deux angles rentrants, en contact avec les au moins deux moyens élastiques. Avantageusement, la section dudit pivot comporte une partie supérieure plus large que sa partie inférieure, ces parties définissant par leurs faces latérales deux angles rentrants, les faces latérales de la partie supérieure dudit pivot sont inclinés à plus de 45 degrés, et/ou les parties supérieure et inférieure dudit pivot sont d'une hauteur sensiblement égale. Ledit logement est parallèle à l'axe de support de charge, ce dit logement étant fixé à un support latéral, et ledit pivot étant solidaire de ladite première branche du quadrilatère.  According to another embodiment, the seat according to the invention comprises an elastic element comprising at least two elastic means in a housing and a pivot integral with said first branch, pivoting about an axis, and positioned between said at least two means resilient, said pivot having at least two re-entrant angles, in contact with the at least two elastic means. Advantageously, the section of said pivot comprises an upper part wider than its lower part, these parts defining by their lateral faces two re-entrant angles, the lateral faces of the upper part of said pivot are inclined at more than 45 degrees, and / or the parts upper and lower of said pivot are of a substantially equal height. Said housing is parallel to the load support axis, said housing being attached to a lateral support, and said pivot being integral with said first branch of the quadrilateral.
Selon un autre mode de réalisation, le siège selon la présente invention comporte un moyen de réglage manuel comportant un moyen de rappel fixé d'un côté sous l'assise dudit siège, et de l'autre côté audit support ou audit pied.  According to another embodiment, the seat according to the present invention comprises a manual adjustment means comprising a return means fixed on one side under the seat of said seat, and on the other side to said support or said foot.
Avantageusement, le siège selon l'invention comporte un dispositif de verrouillage du mouvement de bascule du siège. Description sommaire des dessins Advantageously, the seat according to the invention comprises a device for locking the rocking movement of the seat. Brief description of the drawings
D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre de modes particuliers de réalisation de l 'invention donnés à titre d'exemple non limitatif et représentés par les dessins annexés, dans lesquels : Other advantages and features will emerge more clearly from the following description of particular embodiments of the invention given by way of non-limiting example and represented by the appended drawings, in which:
- La figure 1 est une vue de face, d'un premier mode de réalisation de l'invention. La figure 2 représente une vue latérale du quadrilatère en position réplié. - Figure 1 is a front view of a first embodiment of the invention. Figure 2 shows a side view of the quadrilateral in a replicated position.
La figure 3 représente une vue latérale du quadrilatère de la figure 2 en position inclinée.  Figure 3 shows a side view of the quadrilateral of Figure 2 in an inclined position.
- Les figures 4a et 4b représentent une vue latérale et de face, en coupe partielle, d'un élément élastique, connectant une branche du quadrilatère de la figure 2 sur le support.  - Figures 4a and 4b show a side view and front, in partial section, of an elastic member, connecting a branch of the quadrilateral of Figure 2 on the support.
Les figures 5a et 5b représentent un second mode de réalisation particulier de la présente invention.  Figures 5a and 5b show a second particular embodiment of the present invention.
- La figure 6 représente un troisième mode de réalisation de la présente invention.  - Figure 6 shows a third embodiment of the present invention.
Description d'un mode particulier de réalisation Le siège étant symétrique selon un plan vertical médian, le coté droit et le coté gauche sont identiques, symétriques, fonctionnent simultanément et de manière indissociable. Dans un but de clarté et de simplification, la description suivante mentionnant des éléments suivis de la lettre (a) concerne le coté droit du siège et s'appliquera aux éléments suivis de la lettre (b) concernant le coté gauche du siège. La description mentionnant le quadrilatère (ABCD) et l'élément élastique E ou F, situés sur la partie droite du siège, s'appliquera au quadrilatère (ABCD)' et à l'élément élastique E' ou F' symétriques à ces premiers par rapport à l'assise et situés sur la partie gauche du siège. Selon un premier mode de réalisation de l'invention de la figure 1, le siège articulé comporte un pied 13, sur lequel est fixé un support 7 comportant deux branches 7a et 7b, qui constitue le châssis porteur d'une assise 12 et d'un dossier 6. DESCRIPTION OF A PARTICULAR EMBODIMENT The seat being symmetrical in a median vertical plane, the right side and the left side are identical, symmetrical, operate simultaneously and inseparably. For the sake of clarity and simplification, the following description of elements followed by letter (a) concerns the right-hand side of the seat and will apply to items followed by letter (b) concerning the left-hand side of the seat. The description mentioning the quadrilateral (ABCD) and the elastic element E or F, situated on the right part of the seat, will apply to the quadrilateral (ABCD) 'and to the elastic element E' or F 'symmetrical to these first ones by relative to the seat and located on the left side of the seat. According to a first embodiment of the invention of Figure 1, the articulated seat comprises a foot 13, on which is fixed a support 7 having two branches 7a and 7b, which is the carrier frame of a seat 12 and a file 6.
Les axes de rotation (Ga) et (Gb) définissent un axe de rotation commun (G), représentant l'axe de rotation principal du siège en utilisation. Les deux quadrilatères (ABCD) et (ABCD)' avec l'assise 12 et le dossier 6 constituent ainsi un ensemble monté à pivotement par rapport au support 7, autour de cet axe de rotation commun (G). La disposition de l'assise 12 positionnée sous l'axe principal de rotation (G) est en suspension pendulaire, afin de favoriser le positionnement du centre de gravité de l 'utilisateur/utilisatrice à proximité de l'axe principal de rotation (G), quand le siège est en position de repos, le dossier 6 étant en position relevée. Les axes (A), (B), (C) et (D) sont horizontaux, et constituent les axes de pivotement en rotation des branches du quadrilatère (ABCD). Chacun des axes (A), (B) et (C) peut être constitué soit d'un seul élément, connectant par leur extrémité, les deux quadrilatères (ABCD) et (ABCD)'ou soit de deux éléments symétriques, chacun étant connecté à un quadrilatère. L'axe (D) est constitué de deux éléments (D) et (D)'. The axes of rotation (Ga) and (Gb) define a common axis of rotation (G), representing the main axis of rotation of the seat in use. The two quadrilaterals (ABCD) and (ABCD) 'with the seat 12 and the backrest 6 thus constitute an assembly pivotally mounted relative to the support 7, around this common axis of rotation. (BOY WUT). The arrangement of the seat 12 positioned under the main axis of rotation (G) is in pendulum suspension, in order to favor the positioning of the center of gravity of the user / user close to the main axis of rotation (G) when the seat is in the rest position, the backrest 6 being in the raised position. The axes (A), (B), (C) and (D) are horizontal, and constitute the rotational pivot axes of the quadrilateral branches (ABCD). Each of the axes (A), (B) and (C) can consist of either a single element, connecting at their end, the two quadrilaterals (ABCD) and (ABCD) 'or two symmetrical elements, each connected to a quadrilateral. The axis (D) consists of two elements (D) and (D) '.
Les branches DA et CD sont positionnées du coté intérieur du support 7a. The branches DA and CD are positioned on the inner side of the support 7a.
Ces dites branches peuvent aussi, sans incidence sur le fonctionnement du mécanisme, être disposées du côté extérieur ou à l'intérieur de ce dit support. Ces dites branches sont avantageusement disposées ensemble d'un côté ou l'autre du support 7a pour éviter, en utilisation une torsion latérale du pivot 32a. These said branches can also, without affecting the operation of the mechanism, be arranged on the outer side or inside said support. These said branches are advantageously arranged together on one side or the other of the support 7a to avoid, in use a lateral twist of the pivot 32a.
Selon d'autres modes de réalisation de la présente invention, le siège peut posséder plusieurs pieds, ce ou ces pieds pouvant positionner l'axe principal de rotation (G).  According to other embodiments of the present invention, the seat may have several feet, this or these feet being able to position the main axis of rotation (G).
Sur la figure 2, la projection sur un plan vertical des axes (A), (B), (C) et (D) forme un quadrilatère (ABCD). Ce quadrilatère est articulé à proximité de sa partie supérieure à l'élément élastique E par le pivot 32a qui est positionné à la partie supérieure de la branche DA. In Figure 2, the projection on a vertical plane of the axes (A), (B), (C) and (D) forms a quadrilateral (ABCD). This quadrilateral is articulated near its upper portion to the elastic element E by the pivot 32a which is positioned at the upper part of the branch DA.
Le pivot 32a pivote autour de l'axe G.  The pivot 32a pivots around the axis G.
Le quadrilatère (ABCD), est différent d'un parallélogramme. Il est convexe, comporte quatre branches articulées AB, BC, CD et DA, en utilisation, il est déformable. La branche AB est liée à l'assise 12 et la branche BC est liée au dossier 6.  The quadrilateral (ABCD) is different from a parallelogram. It is convex, has four articulated branches AB, BC, CD and DA, in use, it is deformable. The branch AB is linked to the base 12 and the branch BC is linked to the file 6.
La première branche DA est articulée en rotation au support 7a par le pivot 32a, et à la deuxième branche AB par l'axe (A). La deuxième branche AB, étant liée à l'assise 12, est articulée en rotation à la troisième branche BC par l'axe (B) qui est positionné à la partie inférieure du dossier 6. The first branch DA is articulated in rotation to the support 7a by the pivot 32a, and the second branch AB by the axis (A). The second branch AB, being connected to the seat 12, is articulated in rotation to the third branch BC by the axis (B) which is positioned at the lower part of the backrest 6.
La troisième branche BC, étant liée au dossier 6 est articulée en rotation par l'axe (C), situé au dessus de (B), à la quatrième branche CD.  The third branch BC, being linked to the backrest 6 is articulated in rotation by the axis (C), located above (B), the fourth branch CD.
La quatrième branche CD est articulée à la première branche DA par l'axe The fourth branch CD is articulated to the first branch DA by the axis
(D). (D).
L'axe (A) est positionné sur la moitié antérieure de l'assise 12.  The axis (A) is positioned on the front half of the seat 12.
L'axe (D), étant positionné à la partie supérieure de la branche DA, est sensiblement confondu, avec l'axe (Ga).  The axis (D), being positioned at the upper part of the branch DA, is substantially coincident with the axis (Ga).
L'angle (ABC) est l'angle formé par le dossier 6 et l'assise 12.  The angle (ABC) is the angle formed by the backrest 6 and the seat 12.
L'angle (DAB) est l'angle formé par l'assise 12 et la branche DA.  The angle (DAB) is the angle formed by the seat 12 and the DA branch.
Un dispositif de butée, situé de préférence entre l'assise 12 et le dossier 6, à proximité de l'axe (B), limite la fermeture de l'angle (ABC) sensiblement à 90 degrés, et limite l'ouverture maximale de ce dit angle. Cette ouverture maximale est d'une valeur variable, selon l'application de l'invention, et peut atteindre les 180 degrés.  A stop device, preferably located between the seat 12 and the backrest 6, close to the axis (B), limits the closure of the angle (ABC) substantially to 90 degrees, and limits the maximum opening of this angle. This maximum opening is of a variable value, according to the application of the invention, and can reach 180 degrees.
Entre la position relevée du dossier 6 et la position maximale d'inclinaison en arrière de celui ci, l'angle (ABC) s'ouvre sensiblement de 90 degrés, et l'angle (DAB) se referme sensiblement de 30 degrés.  Between the raised position of the backrest 6 and the maximum position of inclination behind it, the angle (ABC) opens substantially 90 degrees, and the angle (DAB) closes substantially 30 degrees.
Dans les rapports de dimensions nommés par la suite, les branches n'étant pas nécessairement rectilignes, la dimension d'une branche est définie par la distance qui sépare les axes qui la nomment.  In the dimension ratios named later, since the branches are not necessarily rectilinear, the dimension of a branch is defined by the distance that separates the axes that name it.
L'axe (D) est positionné à la partie supérieure de la branche DA afin que le quadrilatère puisse s'allonger suffisamment selon sa diagonale AC, pour obtenir une inclinaison maximale du dossier. La hauteur DH du quadrilatère (ABCD) est issue de l'axe (D) et est perpendiculaire à AB.  The axis (D) is positioned at the upper part of the branch DA so that the quadrilateral can extend sufficiently along its diagonal AC, to obtain a maximum inclination of the folder. The height DH of the quadrilateral (ABCD) comes from the axis (D) and is perpendicular to AB.
Lorsqu'il n'y a pas d'utilisateur sur le siège, le siège est en position de repos et le dossier 6 est redressé, la dimension de la hauteur DH du quadrilatère a une valeur sensiblement deux fois supérieure à la dimension de la branche BC du DH When there is no user on the seat, the seat is in the rest position and the backrest 6 is straightened, the height dimension DH of the quadrilateral has a value substantially twice the size of the branch BC of DH
quadrilatère, le rapport de leurs dimensions c est d'une valeur située entre 1 ,7 etquadrilateral, the ratio of their dimensions c is a value between 1, 7 and
2,4. Le quadrilatère étant déformable, cette dernière valeur est définie pour la position relevée du dossier 6. 2.4. The quadrilateral being deformable, this last value is defined for the raised position of the file 6.
DA  DA
Le rapport des dimensions des branches D est d'une valeur située entre 0,8 et 1.3. The ratio of the dimensions of the branches D is between 0.8 and 1.3.
La somme des dimensions des branches AB et BC est sensiblement égale à la somme des branches CD et DA. Avantageusement, le rapport (CD+DA)/AB+BC) est d'une valeur située entre 0,8 et 1,3. Ces deux dernières valeurs sont définies quelque soit le degré d'inclinaison du dossier 6.  The sum of the dimensions of the branches AB and BC is substantially equal to the sum of the branches CD and DA. Advantageously, the ratio (CD + DA) / AB + BC) is between 0.8 and 1.3. These last two values are defined regardless of the degree of inclination of the file 6.
L'axe (A) est positionné sur la moitié antérieure de l'assise 12.  The axis (A) is positioned on the front half of the seat 12.
La branche CD étant articulée en rotation par l'axe (D) à proximité de l'axe de rotation (Ga), et par l'axe (C) sur la partie inférieure du dossier 6, permet de maintenir le bas du dos de l'utilisateur/utilisatrice sensiblement à la même distance de ce dit axe de rotation, quelque soit le degré d'inclinaison du dossier 6.  The CD branch being articulated in rotation by the axis (D) near the axis of rotation (Ga), and by the axis (C) on the lower part of the backrest 6, allows to maintain the lower back of the user / user substantially at the same distance from said axis of rotation, regardless of the degree of inclination of the file 6.
Sur la figure 3, Le dossier 6 est incliné en arrière, le quadrilatère (ABCD) s'allonge selon sa diagonale AC, un transfert d'une partie du poids de l'utilisateur/utilisatrice s'effectue de l'assise 12 vers le dossier 6, qui pivote autour des axes (B) et (C) l'angle (ABC) s'ouvre, l'angle (DAB) se referme et l'assise 12, se déplace vers l'avant. Ce déplacement de l'assise 12 vers l'avant est compensé par une bascule de la branche DA vers l'avant selon l'angle (a). Ces mouvements sont obtenus par le repositionnement, par gravité, du centre de gravité de l'utilisateur/utilisatrice à proximité de l'axe principal de rotation du siège (G). Cette combinaison de mouvements offre Une multitude de positions pour l'utilisateur/utilisatrice, dont le poids est équilibré entre l'assise 12 et le dossier 6 quelque soit l'inclinaison de ce dernier. In Figure 3, the backrest 6 is tilted back, the quadrilateral (ABCD) extends along its diagonal AC, a transfer of a portion of the weight of the user / user is from the seat 12 to the backrest 6, which pivots around the axes (B) and (C) the angle (ABC) opens, the angle (DAB) closes and the seat 12, moves forward. This displacement of the seat 12 forward is compensated by a rocker of the branch DA forwardly according to the angle (a). These movements are obtained by repositioning, by gravity, the center of gravity of the user / user near the main axis of rotation of the seat (G). This combination of movements offers a multitude of positions for the user / user, whose weight is balanced between the seat 12 and the backrest 6 whatever the inclination of the latter.
L'axe (A) étant positionné sur la moitié antérieure de l'assise 12. En utilisation le poids de l'utilisateur/utilisatrice repose principalement sur la branche AB et exerce sur l'axe (B), une force de rappel du dossier 6 par effet de levier de la branche BC autour de son axe (C). Cette force de rappel est croissante d'une part avec la bascule de la branche DA du quadrilatère (ABCD) qui réduit la valeur de l'angle (a) et d'autre part avec le déploiement de ce quadrilatère par l'allongement de sa diagonale AC qui augmente la valeur de l'angle (ABC). L'assise 12 est articulée en double suspension pendulaire au support 7a par le pivot 32a et l'axe (A), ainsi le centre de gravité de l 'utilisateur/utilisatrice se positionne à proximité de l'axe principal de rotation (G) par gravité. The axis (A) is positioned on the front half of the seat 12. In use the weight of the user is mainly based on the branch AB and exerts on the axis (B), a restoring force of the file 6 by leveraging the branch BC around its axis (C). This restoring force is increasing on the one hand with the dipole of the branch DA of the quadrilateral (ABCD) which reduces the value of the angle (a) and on the other hand with the deployment of this quadrilateral by the lengthening of its AC diagonal which increases the value of the angle (ABC). The seat 12 is articulated in double pendulum suspension to the support 7a by the pivot 32a and the axis (A), so the user's center of gravity is positioned near the main axis of rotation (G) by gravity.
La dimension de la branche BC du quadrilatère est définie de façon que la force de rappel exercée par la branche AB sur l'axe (B) équilibre le poids de l'utilisateur/utilisatrice sur le dossier 6 et sur l'assise 12 quelque soit le degré d'inclinaison du dossier 6 par rapport au sol.  The dimension of the branch BC of the quadrilateral is defined so that the restoring force exerted by the branch AB on the axis (B) balances the weight of the user on the backrest 6 and on the seat 12 whatever the degree of inclination of the backrest 6 with respect to the ground.
Sur les figures 4a et 4b, l'élément élastique E est composé d'un logement 14a, contenant au moins deux éléments de caoutchouc 15a et 16a. Ce dit élément élastique est fixé, à la partie supérieure de la branche 7a par son logement 14a. L'élément élastique E constitue un moyen d'amortissement des mouvements d'oscillation de la branche DA du quadrilatère (ABCD), autour d'un pivot 32a: L'élément élastique E fonctionne en ressort de torsion, et limite le débattement des mouvements d'oscillation vers le haut et vers le bas de la branche DA. In FIGS. 4a and 4b, the elastic element E is composed of a housing 14a, containing at least two rubber elements 15a and 16a. This said elastic element is fixed to the upper part of the branch 7a by its housing 14a. The elastic element E constitutes a means of damping the oscillatory movements of the branch DA of the quadrilateral (ABCD) around a pivot 32a: the elastic element E operates as a torsion spring, and limits the movement of the movements oscillation up and down the DA branch.
Les éléments de caoutchouc 15a et 16a sont disposés l'un au dessus de l'autre, pour positionner le pivot 32a entre eux deux.  The rubber members 15a and 16a are disposed one above the other to position the pivot 32a therebetween.
Le pivot 32a est fixé à la partie supérieure de la branche DA. Ce pivot est plat et en contact par ses deux surfaces supérieures et inférieures avec les éléments de caoutchouc 15a et 16a.  The pivot 32a is fixed to the upper part of the branch DA. This pivot is flat and in contact by its two upper and lower surfaces with the rubber elements 15a and 16a.
Deux flasques latérales 17a et 18a sont fixées à chacune des extrémités du pivot 32a. Ces flasques sont d'une hauteur et d'une largeur sensiblement supérieures à la section du logement 14a, elles contribuent au positionnement latéral des éléments de caoutchouc 15a, 16a et du pivot 32a dans le logement 14a. La largeur du pivot 32a est sensiblement supérieure à la largeur du logement 14a afin que les flasques latérales 17a et 18a ne soient pas en contact avec le logement 14a. Les éléments de caoutchouc 15a et 16a sont en contact par leurs parties antérieure et postérieure avec leur logement 14a, et sont en contact par leur partie centrale avec les flasques latérales 17a et 18a. Cette surface de contact est limitée à leurs parties centrales, afin de limiter la surface de contact commune entre les flasques latérales 17a et 18a et les éléments de caoutchouc 15a et 16a. Two side flanges 17a and 18a are attached to each end of the pivot 32a. These flanges are of a height and a width substantially greater than the section of the housing 14a, they contribute to the lateral positioning of the rubber elements 15a, 16a and the pivot 32a in the housing 14a. The width of the pivot 32a is substantially greater than the width of the housing 14a so that the side flanges 17a and 18a are not in contact with the housing 14a. The rubber elements 15a and 16a are in contact through their anterior parts and posterior with their housing 14a, and are in contact by their central portion with the side flanges 17a and 18a. This contact surface is limited to their central parts, in order to limit the common contact surface between the lateral flanges 17a and 18a and the rubber elements 15a and 16a.
Une des faces du logement 14a est avantageusement démontable, pour faciliter le montage du pivot 32a et des éléments de caoutchouc 15a et 16a à l'intérieur de ce dit logement.  One of the faces of the housing 14a is advantageously removable, to facilitate the mounting of the pivot 32a and the rubber elements 15a and 16a within said housing.
Les éléments de caoutchouc 15a et 16a sont légèrement comprimés verticalement lors de leur montage dans leur logement 14a afin de positionner le pivot 32a et d'opposer une résistance initiale au mouvement d'oscillation de la branche DA solidaire du pivot 32a.  The rubber elements 15a and 16a are slightly compressed vertically during their assembly in their housing 14a in order to position the pivot 32a and to oppose an initial resistance to the oscillation movement of the branch DA integral with the pivot 32a.
De préférence, ces éléments de caoutchouc 15a et 16a seront montés dans leur logement par vulcanisation.  Preferably, these rubber elements 15a and 16a will be mounted in their housing by vulcanization.
L'élément élastique E positionne le pivot 32a sensiblement horizontalement. En utilisation, selon le positionnement de l'utilisateur/utilisatrice, la branche The elastic element E positions the pivot 32a substantially horizontally. In use, depending on the positioning of the user, the branch
DA oscille vers le haut et/ou vers le bas, le pivot 32a par sa section allongée, en basculant sur lui-même, exerçant une pression sur les éléments de caoutchouc 15a et 16a qui opposent une résistance à ses mouvements d'oscillation. DA oscillates upwards and / or downwards, the pivot 32a by its elongate section, by tilting on itself, exerting pressure on the rubber elements 15a and 16a which oppose resistance to its oscillation movements.
Selon ce mode de réalisation de l'invention, la branche DA peut être positionnée à l'intérieur de la branche 7a. Dans ce cas l'élément de caoutchouc inférieur 16a et la base du logement 14a sont scindés en deux parties, ou ajourés, pour permettre le passage de la branche DA à l'intérieur du support 7a.  According to this embodiment of the invention, the branch DA can be positioned inside the branch 7a. In this case the lower rubber member 16a and the base of the housing 14a are split into two parts, or openwork, to allow the passage of the DA branch inside the support 7a.
La branche DA pouvant être positionnée soit à l'intérieur ou soit à l'extérieur de la branche du support 7a, l'une des deux flasques latérales 17a ou 18a est solidaire de la branche DA ou formée par la partie supérieure de cette dite branche.  As the branch DA can be positioned either inside or outside the support branch 7a, one of the two lateral flanges 17a or 18a is integral with the branch DA or formed by the upper part of this branch. .
La Figure 5a représente un second mode de réalisation de l'invention, dans lequel l'élément élastique F comporte un moyen d'amortissement qui comporte trois moyens élastiques 19a, 20a et 21a dans un logement 14a, et un pivot 22a, de support de charge pendulaire, avantageusement de section polygonale, , pivotant autour d'un axe (G) et positionné entre les trois moyens élastiques 19a, 20a et 21a. Ledit pivot de support est solidaire de la branche DA et comporte au moins deux angles rentrant X et Y en contact avec les deux moyens élastiques 20a et 21a. FIG. 5a represents a second embodiment of the invention, in which the elastic element F comprises a damping means which comprises three elastic means 19a, 20a and 21a in a housing 14a, and a support pivot 22a, pendular load, advantageously of polygonal section, pivoting about an axis (G) and positioned between the three elastic means 19a, 20a and 21a. The said pivot of support is secured to the DA branch and comprises at least two reentrant angles X and Y in contact with the two elastic means 20a and 21a.
Ce moyen d'amortissement peut ne comporter que les deux moyens élastiques 20a et 21a pour assurer l'amortissement d'une charge pendulaire.  This damping means may comprise only the two elastic means 20a and 21a to ensure the damping of a pendular load.
La Figure 5b montre l'élément élastique F de la Figure 5a en utilisation. Le poids de l 'utilisateur/utilisatrice sur l'assise 12 du siège exerce, via le pivot 22a, une pression vers le bas des blocs de polymère 20a et 21a. Cette pression est proportionnelle au poids de l'utilisateur/utilisatrice et est dirigée vers le bas. Le mouvement pendulaire du siège entraîne le pivot 22a entre les moyens élastiques qui exerce une force de rappel.  Figure 5b shows the elastic member F of Figure 5a in use. The weight of the user / user on the seat 12 of the seat exerts, via the pivot 22a, a downward pressure of the polymer blocks 20a and 21a. This pressure is proportional to the weight of the user and is directed downwards. The pendulum movement of the seat drives the pivot 22a between the elastic means which exerts a restoring force.
Dans le mode de réalisation des Figures 5a et 5b, la section du pivot 22a comporte une partie supérieure plus large que sa partie inférieure, ces dernières définissant par leurs faces latérales deux angles rentrants X et Y. Ces faces ainsi que les faces supérieures du pivot 22a sont en contact par leur surfaces latérales respectives avec des blocs de polymères 19a, 20a et 21a et sont contenus dans un logement 14a qui est parallèle à l'axe (G), ce logement pouvant être fixé sur la branche latérale 7a, et le pivot 22a étant fixé à la branche DA qui est reliée à l'assise 12.  In the embodiment of Figures 5a and 5b, the pivot section 22a has an upper portion wider than its lower part, the latter defining by their lateral faces two re-entrant angles X and Y. These faces and the upper faces of the pivot 22a are in contact by their respective lateral surfaces with polymer blocks 19a, 20a and 21a and are contained in a housing 14a which is parallel to the axis (G), this housing being attachable to the lateral branch 7a, and the pivot 22a being attached to the branch DA which is connected to the seat 12.
Avantageusement, les faces latérales de la partie supérieure du pivot 22a sont inclinées à plus de 45 degrés par rapport à l'horizontal, et les parties supérieure et inférieure du pivot 22a sont d'une hauteur sensiblement égale.  Advantageously, the lateral faces of the upper part of the pivot 22a are inclined at more than 45 degrees relative to the horizontal, and the upper and lower parts of the pivot 22a are of a substantially equal height.
Selon un troisième mode de réalisation de la présente invention représenté sur la Figure 6, le siège est muni d'un moyen de réglage manuel T et un dispositif de verrouillage L du mouvement de bascule du siège. Le moyen de réglage manuel comporte un élément de rappel T, par exemple du type ressort, fixé d'un côté sous l'assise 12 du siège, et de l'autre côté au support 7 ou au pied 13. Lorsque l'utilisateur/utilisatrice effectue un mouvement de bascule, le moyen T permet de compenser le poids exercé sur le dossier 6 du siège, permettant ainsi un retour à la position initiale lorsque l'utilisateur/utilisatrice se redresse. Ce siège peut comporter un moyen de butée B limitant le mouvement de rappel du ressort. Avantageusement, l'assise 12 comporte un élément H comportant au moins une partie en arc de cercle coulissant par rapport au support 7 ou au pied 13 lors du mouvement de bascule du siège. According to a third embodiment of the present invention shown in Figure 6, the seat is provided with a manual adjustment means T and a locking device L of the rocking movement of the seat. The manual adjustment means comprises a return element T, for example of the spring type, fixed on one side under the seat 12 of the seat, and on the other side to the support 7 or foot 13. When the user / user performs a flip-flop movement, the means T compensates for the weight exerted on the backrest 6 of the seat, thus allowing a return to the initial position when the user stands up. This seat may comprise a stop means B limiting the return movement of the spring. Advantageously, the seat 12 comprises an element H having at least one part in a circular arc sliding relative to the support 7 or the foot 13 during the rocking movement of the seat.
De plus, un moyen de verrouillage L pivotant sur son axe (S) avantageusement fileté de façon hélicoïdale, par exemple de type levier, permet de bloquer et de débloquer, par pincement de l'élément H, l'inclinaison du siège dans une certaine position désirée par l'utilisateur/utilisatrice.  In addition, a locking means L pivoting on its axis (S) advantageously helically threaded, for example of the lever type, makes it possible to block and unblock, by pinching the element H, the inclination of the seat in a certain direction. position desired by the user.
Une molette de réglage M à une des extrémités du moyen de rappel T peut avantageusement permettre de régler manuellement la tension dudit moyen T.  A control wheel M at one of the ends of the return means T may advantageously make it possible to manually adjust the voltage of said means T.
Avantageusement, les axes de rotation (G) et (D) sont confondus en un seul axe articulé sur chaque branche du support 7a et 7b.  Advantageously, the axes of rotation (G) and (D) are merged into a single axis articulated on each branch of the support 7a and 7b.
Dans d'autres modes de réalisation de la présente invention, ce troisième mode de réalisation peut être partiellement combiné avantageusement avec les éléments élastiques E ou F, ces derniers pouvant substituer le moyen de rappel T.  In other embodiments of the present invention, this third embodiment may be partially advantageously combined with the elastic elements E or F, the latter being able to substitute the return means T.
Selon d'autres modes de réalisation de l'invention, le support 7 peut être monté libre en rotation par un vérin pneumatique autour de l'axe vertical du pied, pour permettre une rotation pouvant atteindre 360 degrés du siège et un réglage en hauteur.  According to other embodiments of the invention, the support 7 can be rotatably mounted by a pneumatic cylinder around the vertical axis of the foot, to allow a rotation of up to 360 degrees of the seat and a height adjustment.
Ce support 7 peut avantageusement comporter des accoudoirs 10a et 10b, de préférence réglables en hauteur, respectivement solidaires des branches latérales 7a et 7b. Le siège peut avantageusement comporter un repose-pied articulé au mécanisme du siège ou disposant d'un mécanisme autonome.  This support 7 may advantageously comprise armrests 10a and 10b, preferably adjustable in height, respectively integral with the lateral branches 7a and 7b. The seat may advantageously comprise a footrest articulated to the mechanism of the seat or having an independent mechanism.
Les différents modes de réalisation de l'invention ont été décrits à partir d'un siège comportant un seul pied 13, mais il est bien évident que la présente invention peut aussi être mise en œuvre à partir d'un siège comportant plusieurs pieds.  The various embodiments of the invention have been described from a seat with a single foot 13, but it is obvious that the present invention can also be implemented from a seat with several feet.
Avantageusement, ce siège pourra être utilisé comme siège de bureau, poste de travail, siège pour handicapé ou comme siège de relaxation, car il permet une grande souplesse de positions naturelles de son utilisateur.  Advantageously, this seat can be used as office chair, work station, seat for disabled or as a relaxation seat, because it allows a great flexibility of natural positions of its user.

Claims

REVENDICATIONS
1. Siège articulé comportant au moins un pied (13), une assise (12), un dossier (6), deux supports latéraux (7a, 7b) liés audit au moins un pied (13) entre lesquels sont disposés l'assise (12) et le dossier (6), 1. Articulated seat comprising at least one foot (13), a seat (12), a backrest (6), two lateral supports (7a, 7b) connected to said at least one foot (13) between which the seat ( 12) and the file (6),
caractérisé en ce que deux éléments élastiques (E) et (E)' fixés à la partie supérieure de chaque support latéral (7a, 7b) comportant chacun respectivement un premier et un second axe de rotation (Ga, Gb), articulent en rotation deux quadrilatères (ABCD) et (ABCD)' positionnés symétriquement de chaque coté de l'assise (12), chaque quadrilatère comportant quatre branches :  characterized in that two elastic members (E) and (E) 'attached to the upper part of each lateral support (7a, 7b) each respectively having a first and a second axis of rotation (Ga, Gb) articulate in rotation two quadrilaterals (ABCD) and (ABCD) 'positioned symmetrically on each side of the seat (12), each quadrilateral having four branches:
- la première branche (DA, DA') étant articulée en rotation par rapport au support latéral (7a, 7b) autour d'un desdits axes (Ga, Gb), et à la deuxième branche (AB, AB') autour d'un troisième axe de rotation (A),  the first branch (DA, DA ') being articulated in rotation with respect to the lateral support (7a, 7b) around one of the said axes (Ga, Gb), and at the second branch (AB, AB') around a third axis of rotation (A),
- ladite deuxième branche (AB, AB'), liée à l'assise (12), étant articulée en rotation par rapport à la troisième branche (BC, BC) autour d'un quatrième axe de rotation (B),  said second branch (AB, AB '), linked to the seat (12), being articulated in rotation relative to the third branch (BC, BC) around a fourth axis of rotation (B),
- ladite troisième branche (BC, BC), liée au dossier (6), étant articulée en rotation par rapport à la quatrième branche (CD, CD') autour d'un cinquième axe de rotation (C) positionné au dessus dudit quatrième axe de rotation (B), et  - said third branch (BC, BC), linked to the backrest (6), being articulated in rotation relative to the fourth branch (CD, CD ') about a fifth axis of rotation (C) positioned above said fourth axis rotation (B), and
- ladite quatrième branche (CD, CD') étant articulée en rotation par rapport à la première branche (DA, DA') par un sixième axe de rotation (D).  said fourth branch (CD, CD ') being articulated in rotation with respect to the first branch (DA, DA') by a sixth axis of rotation (D).
2. Siège selon la revendication 1 , caractérisé en ce que ledit sixième axe de rotation (D) est confondu avec l'un desdits premier ou second axes de rotation (Ga, Gb). 2. Seat according to claim 1, characterized in that said sixth axis of rotation (D) coincides with one of said first or second axes of rotation (Ga, Gb).
DH DH
3. Siège selon la revendication 1 ou 2, caractérisé en ce que le rapport gQ des dimensions de la hauteur (DH) du quadrilatère (ABCD) et de ladite troisième branche (BC) du quadrilatère (ABCD), est d'une valeur comprise entre 1,7 et 2,4. 3. Seat according to claim 1 or 2, characterized in that the ratio gQ of the dimensions of the height (DH) of the quadrilateral (ABCD) and said third branch (BC) of the quadrilateral (ABCD), is of a value of between 1.7 and 2.4.
4. Siège selon l'une quelconque des revendications 1 à 3, caractérisé en ce DA 4. Seat according to any one of claims 1 to 3, characterized in that DA
que le rapport D des dimensions desdites première (DA) et quatrième (CD) branches du quadrilatère (ABCD), est d'une valeur située comprise entre 0,8 et 1,3. that the ratio D of the dimensions of said first (DA) and fourth (CD) branches of the quadrilateral (ABCD), is of a value between 0.8 and 1.3.
5. Siège selon l'une quelconque des revendications 1 à 4 caractérisé en ce que le rapport entre la somme des dimensions des première et quatrième branches et la somme des dimensions des deuxième et troisième branches ((CD+DA)/(AB+BC)) des branches du quadrilatère (ABCD) est d'une valeur comprise entre 0,8 et 1,3. 5. Seat according to any one of claims 1 to 4 characterized in that the ratio between the sum of the dimensions of the first and fourth branches and the sum of the dimensions of the second and third branches ((CD + DA) / (AB + BC )) branches of the quadrilateral (ABCD) is worth between 0.8 and 1.3.
6. Siège selon l'une quelconque des revendications 1 à 5, caractérisé en ce que ledit troisième axe de rotation (A) est positionné sur la moitié antérieure de l'assise (12). 6. Seat according to any one of claims 1 to 5, characterized in that said third axis of rotation (A) is positioned on the front half of the seat (12).
7. Siège selon l'une quelconque des revendications 1 à 6 caractérisé en ce qu'il comporte un élément élastique (E) comportant au moins deux moyens élastiques (15a) et (16a) dans un logement (14a), d'une largeur sensiblement supérieure à la section du logement (14a), disposés l'un au dessus de l'autre, positionnant horizontalement entre eux deux, un pivot (32a) pivotant autour d'un desdits premier et second axes de rotation (Ga, Gb). 7. Seat according to any one of claims 1 to 6 characterized in that it comprises a resilient element (E) having at least two elastic means (15a) and (16a) in a housing (14a), a width substantially greater than the section of the housing (14a), arranged one above the other, positioning horizontally therebetween, a pivot (32a) pivoting about one of said first and second axes of rotation (Ga, Gb) .
8. Siège selon l'une quelconque des revendications 1 à 6 caractérisé en ce qu'il comporte un élément élastique (F) comportant au moins deux moyens élastiques (20a, 21a) dans un logement (14a) et un pivot (22a) solidaire de ladite première branche (DA), pivotant autour d'un axe (G), et positionné entre lesdits au moins deux moyens élastiques (20a, 21 a), ledit pivot (22a) comportant au moins deux angles rentrants (X, Y), en contact avec les au moins deux moyens élastiques (20a, 21a). 8. Seat according to any one of claims 1 to 6 characterized in that it comprises an elastic member (F) having at least two elastic means (20a, 21a) in a housing (14a) and a pivot (22a) integral said first leg (DA) pivoting about an axis (G) and positioned between said at least two elastic means (20a, 21a), said pivot (22a) having at least two re-entrant angles (X, Y) in contact with the at least two elastic means (20a, 21a).
9. Siège selon la revendication 9, caractérisé en ce que la section dudit pivot (22a) comporte une partie supérieure plus large que sa partie inférieure, ces parties définissant par leurs faces latérales deux angles rentrants (X, Y). 9. Seat according to claim 9, characterized in that the section of said pivot (22a) has an upper part wider than its lower part, these parts defining by their lateral faces two re-entrant angles (X, Y).
10. Siège selon la revendication 9 ou 10, caractérisé en ce que les faces latérales de la partie supérieure dudit pivot (22a) sont inclinés à plus de 45 degrés. 10. Seat according to claim 9 or 10, characterized in that the side faces of the upper portion of said pivot (22a) are inclined at more than 45 degrees.
1 1. Siège selon l'une quelconque des revendications 9 à 11, caractérisé en ce que les parties supérieure et inférieure dudit pivot (22a) sont d'une hauteur sensiblement égale. 1 1. Seat according to any one of claims 9 to 11, characterized in that the upper and lower portions of said pivot (22a) are of a substantially equal height.
12. Siège selon l'une quelconque des revendications 9 à 12, caractérisé en ce que ledit logement (14a) est parallèle à l'axe de support de charge (G), ce dit logement (14a) étant fixé à un support latéral (7a, 7b), et ledit pivot (22a) étant solidaire de ladite première branche (DA). 12. Seat according to any one of claims 9 to 12, characterized in that said housing (14a) is parallel to the load bearing axis (G), said housing (14a) being fixed to a lateral support ( 7a, 7b), and said pivot (22a) being integral with said first branch (DA).
13. Siège selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte un moyen de réglage manuel (T) comportant un moyen de rappel fixé d'un côté sous l'assise (12) dudit siège, et de l'autre côté audit support (7) ou audit pied (13). 13. Seat according to any one of the preceding claims, characterized in that it comprises a manual adjustment means (T) comprising a return means fixed on one side under the seat (12) of said seat, and the other side of said support (7) or said foot (13).
14. Siège selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte un dispositif de verrouillage (L) du mouvement de bascule du siège. 14. Seat according to any one of the preceding claims, characterized in that it comprises a locking device (L) of the rocking movement of the seat.
PCT/FR2011/000112 2010-03-09 2011-02-25 Pendular seat having a pivotable connection for the movements of the seat portion and the backrest WO2011110753A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11714345A EP2571399A1 (en) 2010-03-09 2011-02-25 Pendular seat having a pivotable connection for the movements of the seat portion and the backrest

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR1000935 2010-03-09
FR1000935A FR2957230A1 (en) 2010-03-09 2010-03-09 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
FR1004807 2010-12-10
FR1004807A FR2968527A1 (en) 2010-03-09 2010-12-10 REGULATION OF THE ROCKET MOVEMENT OF A PENDULAR SEAT

Publications (1)

Publication Number Publication Date
WO2011110753A1 true WO2011110753A1 (en) 2011-09-15

Family

ID=43903855

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2011/000112 WO2011110753A1 (en) 2010-03-09 2011-02-25 Pendular seat having a pivotable connection for the movements of the seat portion and the backrest

Country Status (3)

Country Link
EP (1) EP2571399A1 (en)
FR (2) FR2957230A1 (en)
WO (1) WO2011110753A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4108415A (en) * 1977-05-11 1978-08-22 Guyray Industries, Inc. (Entire) Rocker suspension system
EP1327401A2 (en) * 2002-01-11 2003-07-16 Walter Frese Tiltable seat assembly
WO2004028303A1 (en) * 2002-09-26 2004-04-08 Margrit Bodinek Rocking chair
WO2005051132A1 (en) 2003-11-20 2005-06-09 Didier Monard Automatically positioned articulated seat
FR2892905A1 (en) 2005-11-09 2007-05-11 Didier Monard 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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6979059B1 (en) * 2004-09-16 2005-12-27 Hc Holdings, Llc Rocking chair construction
DE202007016488U1 (en) * 2007-11-06 2008-02-21 Prömm, Felix Tobias seat device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4108415A (en) * 1977-05-11 1978-08-22 Guyray Industries, Inc. (Entire) Rocker suspension system
EP1327401A2 (en) * 2002-01-11 2003-07-16 Walter Frese Tiltable seat assembly
WO2004028303A1 (en) * 2002-09-26 2004-04-08 Margrit Bodinek Rocking chair
WO2005051132A1 (en) 2003-11-20 2005-06-09 Didier Monard Automatically positioned articulated seat
FR2892905A1 (en) 2005-11-09 2007-05-11 Didier Monard 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

Also Published As

Publication number Publication date
EP2571399A1 (en) 2013-03-27
FR2968527A1 (en) 2012-06-15
FR2957230A1 (en) 2011-09-16

Similar Documents

Publication Publication Date Title
EP0258156B1 (en) Folding chair with an adjustable back and foot rest
EP0689784B1 (en) Relax-chair
FR2676630A1 (en) INTERCONNECTION MECHANISM FOR SUPPORTING A SEAT AND A FOLDER OF A CHAIR.
FR2529456A1 (en) Elevating device for a wheelchair and wheelchair making use thereof
BE481934A (en)
FR2594663A1 (en) Chair or armchair having a slope which is variable and synchronised with the seat and the backrest
BE546887A (en)
EP1083808B1 (en) Misericord type seat
WO2018104595A1 (en) Anterior support device for the lower limbs
WO2011110753A1 (en) Pendular seat having a pivotable connection for the movements of the seat portion and the backrest
EP1722657B1 (en) Seat with a separately adjustable back rest and seat portion and an adjustable seat depth
EP0399893A1 (en) Synchronous adjustment device for the inclination of the backrest and seat of an arm-chair
FR2473864A1 (en) Multi-purpose chair for office and work use - has fold-down back rest forming pelvic support for standing aid
FR2639807A1 (en) Chair with pivoting seat
FR2995511A1 (en) Device for transmission of movement between e.g. base and backrest in relation to support of e.g. seat utilized to accommodate users, has biasing unit integrally formed with support, and base secured to backrest via lever axle
FR3075582A1 (en) FLOATING SEAT OF SEAT
FR3067920B1 (en) SEAT DEVICE
FR3062291A1 (en) HYBRID SEAT
FR2772575A1 (en) SAFETY AND ADJUSTMENT DEVICE FOR THE TILT OF FOLDING LONG CHAIRS
FR2641453A1 (en) Reclining armchair
FR2892905A1 (en) 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
FR3052348A1 (en) RECLINING ARMCHAIR
BE467171A (en)
EP0357524B1 (en) Reclining furniture such as a chair, seat or bed with a back-rest
FR2842403A1 (en) Rocking chair is supported by vertical post mounted on rocker feet, components of chair frame being flexible enough to adjust point of projection of center of gravity on ground so that it remains behind rocking axis

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11714345

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2011714345

Country of ref document: EP