EP2434927B1 - Mechanism for horizontally sliding the seat portion of a seat - Google Patents

Mechanism for horizontally sliding the seat portion of a seat Download PDF

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Publication number
EP2434927B1
EP2434927B1 EP09784394.0A EP09784394A EP2434927B1 EP 2434927 B1 EP2434927 B1 EP 2434927B1 EP 09784394 A EP09784394 A EP 09784394A EP 2434927 B1 EP2434927 B1 EP 2434927B1
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EP
European Patent Office
Prior art keywords
seat
seat pan
support
relatively
sliding mechanism
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EP09784394.0A
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German (de)
French (fr)
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EP2434927A1 (en
Inventor
Etienne Girardin
Jean Antoine Krommenacker
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Steelcase Inc
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Steelcase Inc
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts

Definitions

  • the present invention relates to a sliding mechanism of horizontal course of the seat of a seat relative to a support plate of the seat in the upper part of the feet of the seat, mechanism, which significantly improves the comfort of use of the seat. seat allowing a relative movement of the seat relative to the rest of the seat, especially when the user tilts his bust backwards, to support his back to the folder.
  • the mechanism of the invention comprises means for guiding the sliding of the seat relative to the support plate, and means for returning the seat in a stable rest position when it undergoes sliding.
  • WO 2008/140752 discloses a sliding mechanism such as that of the present invention, guiding the sliding of the seat on a support plate and the assistant by means of a conventional return member of the tension spring constituting the return means.
  • said return means consist of an elastic piece of synthetic material.
  • the mechanical return characteristic of such a material is favorable in that it leads to a behavior much more comfortable for the user than if it was that of a conventional metal coil tensile spring.
  • the use of such a material also has a significant economic impact since the Making a synthetic rubber spring is less expensive than that of a conventional metal spring.
  • the elastic synthetic part is housed in a recess of the support plate having two transverse walls perpendicular to the displacement of the seat, forming axial stops for members protruding from the seat, one of axial ends of the resilient piece being driven by the seat towards the wall of the proximal recess of the front edge of the seat, the other end being fixed to the distal wall of said edge.
  • slip control implies that, as mentioned, not only return means providing a variable tension dependent on the amplitude of the slip, but also a limited race.
  • the recess therefore has a length sufficient to allow the end driven by the seat to have an axial displacement of predetermined length considered comfortable, beyond which the position of the body is no longer so relaxing for the back.
  • the end of the elastic synthetic part attached to the distal wall of the edge preferably covers a surface of this wall intended to come into contact with a flexible tab protruding from the seat and which has a frontal surface of the same shape, in order to on the one hand to make the rear stop inaudible and give it on the other hand a buffer effect improving the feeling of comfort for the user.
  • said end of the elastic synthetic part comprises a housing partially surrounding the front volume of the flexible tab protruding from the seat, so as to further increase the buffering effect and to secondarily guide said tab.
  • the other end of the elastic synthetic part that which is driven towards the wall of the proximal recess of the front edge of the seat, comprises an orifice housing a pin protruding from the seat and which echoes the movement of the seat to the seat.
  • elastic piece and more particularly at its end adapted to move according to a predetermined stroke length in the recess of the support plate.
  • the orifice in question is oblong, for reasons which essentially relate to the mounting of the seat on the support plate, as will be explained in more detail below.
  • the seat comprises for this purpose, in a possible configuration, two longitudinal lateral flanges oriented along the axis of the sliding and able to slide on pads of the same orientation fixed to the support plate and provided with axial orifices in which nipples projecting beyond soles.
  • the orifices made in the pads may be of rectangular shape, for the purpose of sliding T-shaped nipples of the seat, one end of said orifices being enlarged to allow the introduction of the T-shaped nipple: a classic buttonhole-like configuration with a part of the orifice devoted to its insertion while the other part, the one having the reduced width and the greater length, is provided for guiding the actual sliding.
  • the orifices themselves have an elongated T shape.
  • the orifices of each pad and the nipples of each sole are two located in the vicinity of their axial ends, where a positioning of said links to the corners of the seat.
  • the soles can also be fixed to the seat by T-studs oriented perpendicularly to the nipples of their opposite face sliding in the pads, which cooperate with rectangular orifices with two widths made in the 'seated.
  • the face of the seat oriented on the side of the support plate is provided with pairs of guide pads framing a raised flat portion of the plate, whose side walls slide in said pads.
  • the recess containing the elastic return piece is preferably placed in said raised flat portion, between a pair of these pads.
  • a rectangular orifice is formed in said raised flat portion, in which is fixed a substantially parallelepipedal volume tray constituting the recess, which is centered in said orifice and retained on its edges by a peripheral flange.
  • This peripheral flange is also cut at the level of the transverse wall of the recess to which is fixed the elastic synthetic part, to allow the mounting of the seat whose elastic tab is bent while the T-pins are inserted. in the widened portion of the orifices of the pads, said tab then being slid through said cutout for insertion into the recess.
  • the cut as much as the elasticity of the leg protruding from the seat function only during assembly.
  • the elastic piece of synthetic rubber is for example made of polyethylene terephthalate.
  • the seat of the invention comprises a shell (1) placed in the upper part of feet (2, 3) and in which is disposed a support plate (4) of a seat (10) as shown in FIG. figure 2 , which is slidably mounted on the assembly appearing in the figure 1 .
  • This sliding, controlled by return means (20) is effected by means of flanges (6, 7) having T-shaped upper lugs (8, 9) for fixing said flanges (6, 7). to the seat (10) via respectively the orifices (11, 12) formed therein.
  • the fastening mode being perpendicular to the sliding, the flanges (6, 7) are first fixed to the seat (10) by insertion of the pins (8, 9) in the enlarged portions of the orifices (11, 12), then sliding outwardly in the narrow portions of said orifices (11, 12).
  • the soles (6, 7) are connected to the pads (13, 14) fixed to the support plate (4), and which appear in figure 3 .
  • These pads (13, 14), fixed to the plate (4) and of the same shape as the flanges (6, 7), have orifices (15, 16) of rectangular shape to two widths to allow a similar type of fixation to the one used for fixing the soles (6, 7) to the seat (10).
  • the reduced width portion of the orifices (15, 16) has a length allowing the nipples (17) to slide in at least the allowable stroke for the seat (10) (between 20 and 30 mm) relative to the support (4) .
  • the stops fixing the terminals of said race are implemented at the return means (20), as will be explained in more detail below.
  • an elastic tab (26) has an end having a parallelepipedal volume, in the manner of a bumper, adapted to fit into a housing (27) formed at the end (22). ) of the elastic piece (20).
  • the end (22) of the part (20) which contains the housing (27) is retained inside the tray by projections (28, 28 ') blocking it at the level of lateral shoulders made between the end (27). 22) and a tab (29) connecting the latter to the main body (30) of the elastic piece having the orifice (24). Said body (30) is guided in translation inside the tray (19) by its side walls and its bottom walls.
  • the cutout (31) made in the collar (21) of the tray (19) allows the tab (26) to slide on the plane middle portion (5) during the insertion of the nipples (17) of the soles (6, 7). ) in the enlarged portions of the orifices (15, 16) formed in the pads (13, 14). In this case, the pin (25) is inserted into the portion of the oblong orifice (24) distal from the end (23). The tab (26) is then flexed.
  • the pin (25) then shifts toward the end (23) of the oblong orifice (24), and the assembly is ready for operation.
  • the operation is then the following: when, under the effect of an action exerted by the user of the seat, the seat (10) slides relative to the support plate (4), the pin (25) drives the body (30) of the resilient piece (20) towards the end (31) of the recess (18). Ultimately, the layer of synthetic material of the piece (20) interposed between the pin (25) and the wall (31) produces a buffer effect that suppresses noise and creates a quilted stop. The end of the tab (26) is then out of the housing (27).
  • pairs of studs (32, 32 ', 33, 33') protruding from the seat (10) surround the raised central plane area (5) of the support plate (4), further reinforcing the guiding of the sliding of the seat (10) relative to said plate (4), in the middle part.
  • the particular mechanical properties of the part (20) make it possible, in addition to the initial return function and the variable resistance opposed to the stresses, to ensure optimum comfort of use by the implementation of buffer stops at the two axial ends of the stroke. sliding of the seat (10) relative to the support plate (4).

Description

La présente invention concerne un mécanisme de glissement d'allure horizontale de l'assise d'un siège par rapport à une plaque formant support de l'assise en partie supérieure des pieds du siège, mécanisme, qui améliore notablement le confort d'utilisation du siège en permettant un mouvement relatif de l'assise par rapport au reste du siège notamment lorsque l'utilisateur bascule son buste vers l'arrière, pour appuyer son dos au dossier.The present invention relates to a sliding mechanism of horizontal course of the seat of a seat relative to a support plate of the seat in the upper part of the feet of the seat, mechanism, which significantly improves the comfort of use of the seat. seat allowing a relative movement of the seat relative to the rest of the seat, especially when the user tilts his bust backwards, to support his back to the folder.

Une telle position permet de relâcher la tension du dos et est couramment utilisée pour reposer la colonne vertébrale et le haut du dos, considéré comme le réceptacle des tensions du corps. En l'absence de glissement de l'assise, pour adopter la même position, l'utilisateur doit déplacer son corps pour l'amener vers l'avant du siège, ce qui l'oblige soit à se relever légèrement, soit à « glisser » au contact de l'assise, ce qui implique des frottements notamment lorsqu'elle est revêtue d'un matelassage, et en maintient le dos en tension.Such a position relieves tension in the back and is commonly used to rest the spine and upper back, considered the receptacle of body tension. In the absence of sliding of the seat, to adopt the same position, the user must move his body to bring it to the front of the seat, which requires it to either rise slightly or to "slide In contact with the seat, which involves friction especially when it is covered with a padding, and keeps the back in tension.

Classiquement, le mécanisme de l'invention comporte des moyens de guidage du coulissement de l'assise par rapport à la plaque support, ainsi que des moyens de rappel de l'assise dans une position stable de repos lorsqu'elle subit un coulissement. Ces derniers permettent d'abord une « réinitialisation » automatique et nécessaire de la position de l'assise sur le siège en l'absence d'efforts pour la déplacer, mais ils confèrent de surcroît au déplacement de l'assise une forme de confort puisque l'utilisateur doit vaincre l'effort de rappel et que le déplacement lui apparaît assisté, fluide et non heurté.Conventionally, the mechanism of the invention comprises means for guiding the sliding of the seat relative to the support plate, and means for returning the seat in a stable rest position when it undergoes sliding. These allow first an automatic "reinitialization" and necessary of the position of the seat on the seat in the absence of efforts to move it, but they also confer on the displacement of the seat a form of comfort since the user must overcome the return force and that the movement appears assisted, fluid and unobstructed.

Le document WO 2008/140752 divulgue un mécanisme de glissement tel que celui de la présente invention, guidant le coulissement de l'assise sur une plaque support et l'assistant au moyen d'un organe de rappel classique de type ressort de traction constituant les moyens de rappel.The document WO 2008/140752 discloses a sliding mechanism such as that of the present invention, guiding the sliding of the seat on a support plate and the assistant by means of a conventional return member of the tension spring constituting the return means.

D'une manière innovante, selon l'invention, lesdits moyens de rappel sont constitués d'une pièce élastique en matériau synthétique. La caractéristique mécanique de rappel d'un tel matériau est favorable en ce qu'elle conduit à un comportement beaucoup plus confortable pour l'utilisateur que s'il s'agissait de celle d'un ressort de traction classique métallique à boudin. L'emploi d'une telle matière a de plus une incidence économique non négligeable puisque la fabrication d'un ressort en caoutchouc synthétique est moins onéreuse que celle d'un ressort classique en métal.In an innovative manner, according to the invention, said return means consist of an elastic piece of synthetic material. The mechanical return characteristic of such a material is favorable in that it leads to a behavior much more comfortable for the user than if it was that of a conventional metal coil tensile spring. The use of such a material also has a significant economic impact since the Making a synthetic rubber spring is less expensive than that of a conventional metal spring.

Selon une configuration possible de l'invention, la pièce synthétique élastique est logée dans un évidement de la plaque support comportant deux parois transversales perpendiculaires au déplacement de l'assise, formant butées axiales pour des organes dépassant de l'assise, l'une des extrémités axiales de la pièce élastique étant entraînée par l'assise en direction de la paroi de l'évidement proximale du bord avant de l'assise, l'autre extrémité étant fixée à la paroi distale dudit bord.According to a possible configuration of the invention, the elastic synthetic part is housed in a recess of the support plate having two transverse walls perpendicular to the displacement of the seat, forming axial stops for members protruding from the seat, one of axial ends of the resilient piece being driven by the seat towards the wall of the proximal recess of the front edge of the seat, the other end being fixed to the distal wall of said edge.

Le contrôle du glissement implique en l'occurrence qu'il s'effectue non seulement, comme mentionné, à l'encontre de moyens de rappel procurant une tension variable dépendant de l'amplitude du glissement, mais aussi que ce dernier s'effectue selon une course limitée. L'évidement présente donc une longueur suffisante pour permettre à l'extrémité entraînée par l'assise d'avoir un débattement axial de longueur prédéterminée considérée comme confortable, au delà de laquelle la position du corps n'est plus aussi reposante pour le dos.In this case, slip control implies that, as mentioned, not only return means providing a variable tension dependent on the amplitude of the slip, but also a limited race. The recess therefore has a length sufficient to allow the end driven by the seat to have an axial displacement of predetermined length considered comfortable, beyond which the position of the body is no longer so relaxing for the back.

L'extrémité de la pièce synthétique élastique fixée à la paroi distale du bord couvre de préférence une surface de cette paroi prévue pour entrer en contact avec une patte flexible dépassant de l'assise et qui présente une surface frontale de même forme, afin d'une part de rendre la butée arrière inaudible et de lui conférer d'autre part un effet tampon améliorant la sensation de confort pour l'utilisateur.The end of the elastic synthetic part attached to the distal wall of the edge preferably covers a surface of this wall intended to come into contact with a flexible tab protruding from the seat and which has a frontal surface of the same shape, in order to on the one hand to make the rear stop inaudible and give it on the other hand a buffer effect improving the feeling of comfort for the user.

En fait, plus précisément, ladite extrémité de la pièce synthétique élastique comporte un logement entourant partiellement le volume frontal de la patte flexible dépassant de l'assise, de manière à augmenter encore l'effet tampon et à guider secondairement ladite patte.In fact, more specifically, said end of the elastic synthetic part comprises a housing partially surrounding the front volume of the flexible tab protruding from the seat, so as to further increase the buffering effect and to secondarily guide said tab.

L'autre extrémité de la pièce synthétique élastique, celle qui est entraînée vers la paroi de l'évidement proximal du bord avant du siège, comporte un orifice logeant un pion dépassant de l'assise et qui répercute le mouvement de l'assise à la pièce élastique, et plus particulièrement à son extrémité apte à se déplacer selon une longueur de course prédéterminée dans l'évidement de la plaque support. De préférence, l'orifice en question est oblong, pour des raisons qui tiennent essentiellement au montage de l'assise sur la plaque support, comme cela sera explicité plus en détail dans la suite.The other end of the elastic synthetic part, that which is driven towards the wall of the proximal recess of the front edge of the seat, comprises an orifice housing a pin protruding from the seat and which echoes the movement of the seat to the seat. elastic piece, and more particularly at its end adapted to move according to a predetermined stroke length in the recess of the support plate. Preferably, the orifice in question is oblong, for reasons which essentially relate to the mounting of the seat on the support plate, as will be explained in more detail below.

La nécessité d'un guidage de l'assise sur la plaque support au cours de son mouvement de glissement a été mentionnée auparavant : l'assise comporte à cet effet, selon une configuration possible, deux semelles longitudinales latérales orientées selon l'axe du coulissement et apte à glisser sur des patins de même orientation fixés à la plaque support et munis d'orifices axiaux dans lesquels coulissent des tétons dépassant des semelles.The need for guidance of the seat on the support plate during its sliding movement has been mentioned before: the seat comprises for this purpose, in a possible configuration, two longitudinal lateral flanges oriented along the axis of the sliding and able to slide on pads of the same orientation fixed to the support plate and provided with axial orifices in which nipples projecting beyond soles.

En fait, les orifices pratiqués dans les patins peuvent être d'allure rectangulaire, en vue du coulissement de tétons en T de l'assise, une extrémité desdits orifices étant élargie pour permettre l'introduction du téton en T : il s'agit d'une configuration classique de type boutonnière avec une partie de l'orifice dévolue à son insertion alors que l'autre partie, celle qui présente la largeur réduite et la plus grande longueur, est prévue pour le guidage du coulissement proprement dit. En somme, les orifices eux-mêmes présentent une forme en T allongé.In fact, the orifices made in the pads may be of rectangular shape, for the purpose of sliding T-shaped nipples of the seat, one end of said orifices being enlarged to allow the introduction of the T-shaped nipple: a classic buttonhole-like configuration with a part of the orifice devoted to its insertion while the other part, the one having the reduced width and the greater length, is provided for guiding the actual sliding. In sum, the orifices themselves have an elongated T shape.

Pour répartir et équilibrer les liaisons mécaniques par rapport à la surface de l'assise, les orifices de chaque patin et les tétons de chaque semelle sont au nombre de deux localisés au voisinage de leurs extrémités axiales, d'où un positionnement desdites liaisons vers les coins de l'assise.To distribute and balance the mechanical connections relative to the surface of the seat, the orifices of each pad and the nipples of each sole are two located in the vicinity of their axial ends, where a positioning of said links to the corners of the seat.

Il est à noter que les semelles, selon une possibilité, peuvent également être fixées à l'assise par des tétons en T orientés perpendiculairement aux tétons de leur face opposée coulissant dans les patins, qui coopèrent avec des orifices rectangulaires à deux largeurs pratiqués dans l'assise.It should be noted that the soles, according to one possibility, can also be fixed to the seat by T-studs oriented perpendicularly to the nipples of their opposite face sliding in the pads, which cooperate with rectangular orifices with two widths made in the 'seated.

Par ailleurs, toujours dans une optique de guidage de l'une par rapport à l'autre, la face de l'assise orientée du côté de la plaque support est munie de paires de plots de guidage encadrant une portion plane surélevée de la plaque, dont les parois latérales coulissent dans lesdits plots.Moreover, always in a guiding optics of the one with respect to the other, the face of the seat oriented on the side of the support plate is provided with pairs of guide pads framing a raised flat portion of the plate, whose side walls slide in said pads.

Dans cette hypothèse, l'évidement contenant la pièce de rappel élastique est de préférence placé dans ladite portion plane surélevée, entre une paire de ces plots.In this case, the recess containing the elastic return piece is preferably placed in said raised flat portion, between a pair of these pads.

En fait, pour simplifier la fabrication, un orifice rectangulaire est pratiqué dans ladite portion plane surélevée, dans lequel est fixé un bac à volume sensiblement parallélépipédique constituant l'évidement, qui est centré dans ledit orifice et retenu sur ses bords par une collerette périphérique.In fact, to simplify manufacture, a rectangular orifice is formed in said raised flat portion, in which is fixed a substantially parallelepipedal volume tray constituting the recess, which is centered in said orifice and retained on its edges by a peripheral flange.

Cette collerette périphérique est d'ailleurs découpée au niveau de la paroi transversale de l'évidement à laquelle est fixée la pièce synthétique élastique, afin de permettre le montage de l'assise dont la patte élastique est fléchie pendant que les tétons en T sont insérés dans la partie élargie des orifices des patins, ladite patte étant ensuite glissée au travers de ladite découpe pour son insertion dans l'évidement. En somme, la découpe autant que l'élasticité de la patte dépassant de l'assise n'ont de fonction qu'au cours de l'assemblage.This peripheral flange is also cut at the level of the transverse wall of the recess to which is fixed the elastic synthetic part, to allow the mounting of the seat whose elastic tab is bent while the T-pins are inserted. in the widened portion of the orifices of the pads, said tab then being slid through said cutout for insertion into the recess. In short, the cut as much as the elasticity of the leg protruding from the seat function only during assembly.

Plus précisément, la pièce élastique en caoutchouc synthétique est par exemple réalisée en polyéthylène téréphtalate.More specifically, the elastic piece of synthetic rubber is for example made of polyethylene terephthalate.

Le mécanisme de glissement de l'invention va à présent être décrit plus en détail, en référence aux figures annexées, pour lesquelles :

  • la figure 1 est une vue en perspective de dessus du support de l'assise d'un siège selon l'invention ;
  • la figure 2 représente une vue en perspective de la face inférieure de l'assise, prévue pour être montée coulissante sur le support de la figure 1;
  • la figure 3 montre une vue de dessus du support faisant apparaître les patins de coulissement ;
  • la figure 4 représente une semelle destinée à être assemblée à l'assise et à coulisser dans un patin ; et
  • la figure 5 illustre, de manière agrandie, la pièce élastique constituant les moyens de rappel dans son évidement.
The sliding mechanism of the invention will now be described in more detail, with reference to the appended figures, for which:
  • the figure 1 is a perspective view from above of the support of the seat of a seat according to the invention;
  • the figure 2 represents a perspective view of the lower face of the seat, designed to be slidably mounted on the support of the figure 1 ;
  • the figure 3 shows a top view of the support showing the sliding shoes;
  • the figure 4 represents a sole intended to be assembled to the seat and to slide in a shoe; and
  • the figure 5 illustrates, in an enlarged manner, the elastic piece constituting the return means in its recess.

En référence à la figure 1, le siège de l'invention comporte une coque (1) placée en partie supérieure de pieds (2, 3) et dans laquelle est disposée une plaque support (4) d'une assise (10) telle que représentée en figure 2, qui est montée coulissante sur l'ensemble apparaissant dans la figure 1. Ce coulissement, contrôlé par des moyens de rappel (20), s'effectue par l'intermédiaire de semelles (6, 7) présentant des tétons supérieurs en forme de T (8, 9) permettant la fixation desdites semelles (6, 7) à l'assise (10) via respectivement les orifices (11, 12) pratiqués dans celle-ci.With reference to the figure 1 , the seat of the invention comprises a shell (1) placed in the upper part of feet (2, 3) and in which is disposed a support plate (4) of a seat (10) as shown in FIG. figure 2 , which is slidably mounted on the assembly appearing in the figure 1 . This sliding, controlled by return means (20), is effected by means of flanges (6, 7) having T-shaped upper lugs (8, 9) for fixing said flanges (6, 7). to the seat (10) via respectively the orifices (11, 12) formed therein.

Le mode de fixation étant perpendiculaire au coulissement, les semelles (6, 7) sont dans un premier temps fixées à l'assise (10) par insertion des tétons (8, 9) dans les parties élargies des orifices (11, 12), puis coulissement latéral vers l'extérieur, dans les parties étroites desdits orifices (11, 12).The fastening mode being perpendicular to the sliding, the flanges (6, 7) are first fixed to the seat (10) by insertion of the pins (8, 9) in the enlarged portions of the orifices (11, 12), then sliding outwardly in the narrow portions of said orifices (11, 12).

Ensuite, les semelles (6, 7) sont reliées aux patins (13, 14) fixés à la plaque support (4), et qui apparaissent en figure 3. Ces patins (13, 14), fixés à la plaque (4) et de même forme que les semelles (6, 7), comportent des orifices (15, 16) d'allure rectangulaire à deux largeurs pour permettre un type de fixation analogue à celui qui est utilisé pour la fixation des semelles (6, 7) à l'assise (10).Then, the soles (6, 7) are connected to the pads (13, 14) fixed to the support plate (4), and which appear in figure 3 . These pads (13, 14), fixed to the plate (4) and of the same shape as the flanges (6, 7), have orifices (15, 16) of rectangular shape to two widths to allow a similar type of fixation to the one used for fixing the soles (6, 7) to the seat (10).

La semelle, telle qu'elle apparaît en figure 4, comporte dès lors à cet effet sur sa face opposée d'autres pions (17) en T, toutefois orientés perpendiculairement aux pions (8, 9).The sole, as it appears in figure 4 , for this purpose has on its opposite face other pins (17) T, however oriented perpendicularly to the pins (8, 9).

La partie de largeur réduite des orifices (15, 16) présente une longueur permettant le coulissement des tétons (17) selon au moins la course permise pour l'assise (10) (entre 20 et 30 mm) par rapport au support (4). Les butées fixant les bornes de ladite course sont mises en oeuvre au niveau des moyens de rappel (20), comme cela sera explicité plus en détail dans la suite.The reduced width portion of the orifices (15, 16) has a length allowing the nipples (17) to slide in at least the allowable stroke for the seat (10) (between 20 and 30 mm) relative to the support (4) . The stops fixing the terminals of said race are implemented at the return means (20), as will be explained in more detail below.

Ceux-ci sont constitués d'une pièce synthétique élastique (20), une sorte de ressort en caoutchouc synthétique, disposée dans un évidement (18) intégré à une pièce en forme de bac (19) centré dans un orifice rectangulaire (non apparent) pratiqué dans une portion médiane plane surélevée (5) de la plaque support (4). Le bac (19) repose sur ladite portion plane (5) par une collerette périphérique (21). L'un des bouts (22) de la pièce élastique (20) est fixée à l'une des extrémités de l'évidement (18), alors que l'autre extrémité (23) de ladite pièce (20), mobile et guidée en translation à l'intérieur du bac (19), comporte un orifice (24) permettant son entrainement au moyen d'un pion (25) dépassant de la surface inférieure de l'assise (10) (voir en figure 2).These consist of an elastic synthetic piece (20), a kind of synthetic rubber spring, disposed in a recess (18) integrated with a tray-shaped part (19) centered in a rectangular orifice (not shown). formed in a raised flat median portion (5) of the support plate (4). The tray (19) rests on said flat portion (5) by a collar peripheral (21). One of the ends (22) of the resilient piece (20) is fixed at one end of the recess (18), while the other end (23) of said piece (20), movable and guided in translation inside the tray (19), comprises an orifice (24) allowing its entrainment by means of a pin (25) protruding from the lower surface of the seat (10) (see figure 2 ).

A proximité dudit pion (25), une patte élastique (26) comporte une extrémité présentant un volume parallélépipédique, à la manière d'un pare-choc, prévu pour s'insérer dans un logement (27) pratiqué à l'extrémité (22) de la pièce élastique (20).In the vicinity of said pin (25), an elastic tab (26) has an end having a parallelepipedal volume, in the manner of a bumper, adapted to fit into a housing (27) formed at the end (22). ) of the elastic piece (20).

Les détails de la constitution du bac (19) d'une part, et de la pièce élastique (20) d'autre part apparaissent plus clairement en figure 5.The details of the constitution of the tray (19) on the one hand, and the elastic part (20) on the other hand appear more clearly in figure 5 .

L'extrémité (22) de la pièce (20) qui contient le logement (27) est retenue à l'intérieur du bac par des saillies (28, 28') la bloquant au niveau d'épaulements latéraux pratiqués entre l'extrémité (22) et une patte (29) reliant cette dernière au corps principal (30) de la pièce élastique dotée de l'orifice (24). Ledit corps (30) est guidé en translation à l'intérieur du bac (19) par ses parois latérales et ses parois de fond.The end (22) of the part (20) which contains the housing (27) is retained inside the tray by projections (28, 28 ') blocking it at the level of lateral shoulders made between the end (27). 22) and a tab (29) connecting the latter to the main body (30) of the elastic piece having the orifice (24). Said body (30) is guided in translation inside the tray (19) by its side walls and its bottom walls.

La découpe (31) pratiquée dans la collerette (21) du bac (19) permet à la patte (26) de glisser sur la portion médiane plane (5) lors de l'insertion des tétons (17) des semelles (6, 7) dans les parties élargies des orifices (15, 16) pratiqués dans les patins (13, 14). Dans ce cas, le pion (25) s'insère dans la partie de l'orifice oblong (24) distale de l'extrémité (23). La patte (26) est alors fléchie.The cutout (31) made in the collar (21) of the tray (19) allows the tab (26) to slide on the plane middle portion (5) during the insertion of the nipples (17) of the soles (6, 7). ) in the enlarged portions of the orifices (15, 16) formed in the pads (13, 14). In this case, the pin (25) is inserted into the portion of the oblong orifice (24) distal from the end (23). The tab (26) is then flexed.

Lorsque les semelles (6, 7) sont coulissées vers les parties de plus petite largeur desdits orifices (15, 16), la patte (26) mise en correspondance avec l'évidement (27) pratiqué dans l'extrémité (22) de la pièce élastique (20) se détend et pénètre dans le volume de l'évidement (18).When the flanges (6, 7) are slid towards the smaller width portions of said orifices (15, 16), the flap (26) is in correspondence with the recess (27) formed in the end (22) of the elastic piece (20) relaxes and enters the volume of the recess (18).

Le pion (25) se décale alors vers l'extrémité (23) de l'orifice oblong (24), et l'ensemble est prêt à fonctionner.The pin (25) then shifts toward the end (23) of the oblong orifice (24), and the assembly is ready for operation.

Le fonctionnement est alors le suivant : lorsque, sous l'effet d'une action exercée par l'utilisateur du siège, l'assise (10) coulisse par rapport à la plaque support (4), le pion (25) entraîne le corps (30) de la pièce élastique (20) vers l'extrémité (31) de l'évidement (18). En bout de course, la couche de matériau synthétique de la pièce (20) interposée entre le pion (25) et la paroi (31) produit un effet tampon qui supprime le bruit et crée une butée matelassée. L'extrémité de la patte (26) est alors sortie du logement (27).The operation is then the following: when, under the effect of an action exerted by the user of the seat, the seat (10) slides relative to the support plate (4), the pin (25) drives the body (30) of the resilient piece (20) towards the end (31) of the recess (18). Ultimately, the layer of synthetic material of the piece (20) interposed between the pin (25) and the wall (31) produces a buffer effect that suppresses noise and creates a quilted stop. The end of the tab (26) is then out of the housing (27).

En sens inverse lorsque, en l'absence de sollicitation sur l'assise (10), la pièce élastique (20) reprend sa forme initiale telle que montrée en figure 5, l'extrémité de la patte flexible (26) réintègre le logement (27) de l'extrémité (22), qui couvre la paroi transversale de l'évidement (18). Le même effet tampon, générée à nouveau par une butée matelassée, se produit de ce côté.In the opposite direction when, in the absence of stress on the seat (10), the elastic piece (20) returns to its initial shape as shown in FIG. figure 5 , the end of the flexible tab (26) reintegrates the housing (27) of the end (22), which covers the transverse wall of the recess (18). The same buffering effect, generated again by a quilted abutment, occurs on this side.

Il est à noter que des paires de plots (32, 32' ; 33, 33') dépassant de l'assise (10) encadrent la zone médiane plane surélevée (5) de la plaque support (4), renforçant encore le guidage du coulissement de l'assise (10) par rapport à ladite plaque (4), en partie médiane.It should be noted that pairs of studs (32, 32 ', 33, 33') protruding from the seat (10) surround the raised central plane area (5) of the support plate (4), further reinforcing the guiding of the sliding of the seat (10) relative to said plate (4), in the middle part.

Les propriétés mécaniques particulières de la pièce (20) permettent, outre la fonction initiale de rappel et la résistance variable opposée aux sollicitations, d'assurer un confort d'utilisation optimal par la mise en oeuvre des butées tampons aux deux extrémités axiales de la course de coulissement de l'assise (10) par rapport à la plaque support (4).The particular mechanical properties of the part (20) make it possible, in addition to the initial return function and the variable resistance opposed to the stresses, to ensure optimum comfort of use by the implementation of buffer stops at the two axial ends of the stroke. sliding of the seat (10) relative to the support plate (4).

La description ci-dessus, au moyen de l'exemple illustré, ne doit pas être considérée comme exhaustive de l'invention, qui comporte au contraire des variantes, par exemple dans la forme de la pièce ressort (20) ou dans les modalités du coulissement.The above description, by means of the illustrated example, is not to be considered as exhaustive of the invention, which on the contrary comprises variants, for example in the form of the spring piece (20) or in the modalities of the invention. sliding.

Claims (15)

  1. Sliding mechanism of horizontal aspect for the seat pan (10) of a seat relatively to a plate (4) forming a support of the seat pan (10) in the upper portion of the legs (2, 3) of the seat, including guiding means for the sliding of the seat pan (10) relatively to the supporting plate (4) and means (20) for returning the seat pan (10) to a stable rest position when it undergoes sliding, characterized in that said return means consist of an elastic part (20) in a synthetic material.
  2. Sliding mechanism for the seat pan (10) of a seat relatively to a support (4) according to the preceding claim, characterized in that the elastic synthetic part (20) is housed in a recess (18) of the supporting plate (4) including two transverse walls perpendicular to the displacement of the seat pan (10) forming axial abutments for members (25, 26) jutting out from the seat pan (10), one of the axial ends (23) of the elastic part (20) being driven by the seat pan (10) towards the proximal wall (31) of the recess (18) from the front edge of the seat pan (10), the other end (22) being attached to the distal wall of said edge.
  3. Sliding mechanism for the seat pan (10) of a seat relatively to a support (4) according to the preceding claim, characterized in that the end (22) of the elastic synthetic part (20) attached to the distal wall covers a surface of this wall provided for coming into contact with a flexible tab (26) jutting out from the seat pan (10) having a front surface of the same shape.
  4. Sliding mechanism for the seat pan (10) of a seat relatively to a support (4) according to the preceding claim, characterized in that the end (22) of the elastic synthetic part (20) attached to the distal wall includes a recess (27) partly surrounding the front space of the tab (26) jutting out from the seat pan (10).
  5. Sliding mechanism for the seat pan (10) of a seat relatively to a support (4) according to any of claims 2 to 4, characterized in that the end (23) of the elastic synthetic part (20) driven towards the proximal wall (31) of the recess (18) includes an orifice (24) housing a pin (25) jutting out from the seat pan (10).
  6. Sliding mechanism for the seat pan (10) of a seat relatively to a support (4) according to the preceding claim, characterized in that the orifice (24) is oblong.
  7. Sliding mechanism for the seat pan (10) of a seat relatively to a support (4) according to any of the preceding claims, characterized in that the seat pan (10) includes two side longitudinal soles (6, 7) oriented along the sliding axis and capable of sliding on glides (13, 14) of the same orientation attached to the supporting plate (4) and provided with axial orifices (15, 16) in which slide nipples (17) jutting out from the soles (6, 7).
  8. Sliding mechanism for the seat pan (10) of a seat relatively to a support (4) according to the preceding claim, characterized in that the orifices (15, 16) made in the glides (13, 14) have a rectangular appearance with view to the sliding of T-nipples (17) of the seat pan (10), an end of said orifices (15, 16) being widened for allowing introduction of the T-nipple (17).
  9. Sliding mechanism for the seat pan (10) of a seat relatively to a support (4) according to any of claims 7 and 8, characterized in that the orifices (15, 16) of each glide (13, 14) and the nipples (17) of each sole (6, 7) are two in number located in the vicinity of their axial ends.
  10. Sliding mechanism for the seat pan (10) of a seat relatively to a support (4) according to any of claims 8 and 9, characterized in that the soles (6, 7) are attached to the seat pan (10) by T-nipples (8, 9) oriented perpendicularly to the nipples (17) of their opposite face sliding in the glides (13, 14) and cooperating with rectangular orifices (11, 12) having two widths, made in the seat pan (10).
  11. Sliding mechanism for the seat pan (10) of a seat relatively to a support (4) according to any of the preceding claims, characterized in that the face of the seat pan (10) oriented towards the supporting plate side (4) is provided with pairs of guiding studs (32, 32'; 33, 33') surrounding a raised planar portion (5) of the plate (4), the sidewalls of which slide in said studs (32, 32'; 33, 33').
  12. Sliding mechanism for the seat pan (10) of a seat relatively to a support (4) according to the preceding claim, characterized in that the recess (18) containing the elastic synthetic part (20) is placed in said planar portion (5) between a pair of studs (32, 32'; 33, 33').
  13. Sliding mechanism for the seat pan (10) of a seat relatively to a support (4) according to the preceding claim, characterized in that a rectangular orifice is made in said raised planar portion (5), in which is attached a tray (19) having a rectangular volume forming the recess (18), centred in said orifice and retained on its edges by a peripheral flange (21).
  14. Sliding mechanism for the seat pan (10) of a seat relatively to a support (4) according to the preceding claim, characterized in that the peripheral flange (21) is cut at the wall of the recess (18) to which is attached the elastic synthetic part (20).
  15. Sliding mechanism for the seat pan (10) of a seat relatively to a support (4) according to any of the preceding claims, characterized in that the elastic part (20) is in polyethylene terephthalate.
EP09784394.0A 2009-05-27 2009-05-27 Mechanism for horizontally sliding the seat portion of a seat Active EP2434927B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR2009/050987 WO2010136659A1 (en) 2009-05-27 2009-05-27 Mechanism for horizontally sliding the seat portion of a seat

Publications (2)

Publication Number Publication Date
EP2434927A1 EP2434927A1 (en) 2012-04-04
EP2434927B1 true EP2434927B1 (en) 2016-08-17

Family

ID=41510674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09784394.0A Active EP2434927B1 (en) 2009-05-27 2009-05-27 Mechanism for horizontally sliding the seat portion of a seat

Country Status (3)

Country Link
EP (1) EP2434927B1 (en)
ES (1) ES2600502T3 (en)
WO (1) WO2010136659A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6688692B2 (en) * 2001-06-15 2004-02-10 Hon Technology Inc. Locking device for chair seat horizontal adjustment mechanism
ATE308905T1 (en) * 2002-08-23 2005-11-15 Stoll Sedus Ag CHAIR WITH ADJUSTABLE SEAT DEPTH
JP4095401B2 (en) * 2002-10-16 2008-06-04 タカノ株式会社 Seat slide mechanism
ITMI20070943A1 (en) 2007-05-09 2008-11-10 L & P Property Management Co SEAT FOR CHAIRS OR ARMCHAIRS PARTICULARLY OF ADJUSTABLE OFFICE TYPE.

Also Published As

Publication number Publication date
EP2434927A1 (en) 2012-04-04
WO2010136659A1 (en) 2010-12-02
ES2600502T3 (en) 2017-02-09

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