EP0189719A1 - Sustaining elements, in particular for seats and seat backs - Google Patents

Sustaining elements, in particular for seats and seat backs Download PDF

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Publication number
EP0189719A1
EP0189719A1 EP85402649A EP85402649A EP0189719A1 EP 0189719 A1 EP0189719 A1 EP 0189719A1 EP 85402649 A EP85402649 A EP 85402649A EP 85402649 A EP85402649 A EP 85402649A EP 0189719 A1 EP0189719 A1 EP 0189719A1
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EP
European Patent Office
Prior art keywords
opposite edges
support element
support
element according
bearing surface
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EP85402649A
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German (de)
French (fr)
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EP0189719B1 (en
Inventor
Jean-Claude Duboys
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DUBOYS JEAN CLAUDE
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DUBOYS JEAN CLAUDE
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/02Seat parts
    • A47C7/16Seats made of wooden, plastics, or metal sheet material; Panel seats
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/02Seat parts
    • A47C7/029Seat parts of non-adjustable shape adapted to a user contour or ergonomic seating positions

Definitions

  • the invention relates to support elements, such as seats or seat backs, and their means, that is to say the devices used and methods for their manufacture.
  • Supporting elements of this kind are known which are made of laminated wood or of plastic and to which an appropriate curved shape is given by forming, in particular hot forming, or else by molding.
  • the present invention aims to remedy these drawbacks.
  • the two opposite edges of the upper bearing surface have respective radii of curvature slightly smaller than the two corresponding opposite edges of the lower bearing surface.
  • each bearing surface respectively have cylindrical curvatures with reverse concavities.
  • each shaper respectively have cylindrical curvatures with reverse concavities.
  • the connecting means interposed between the two upper and lower planar sheets are essentially constituted by local reinforcements forming spacers, and by a curable foam occupying at least partially the space between these two sheets.
  • the invention consists, apart from the arrangements which have just been mentioned, in certain other arrangements, which are preferably used at the same time and which will be more explicitly discussed below.
  • Figure 1 of these drawings is a perspective view of a support element established in accordance with the invention.
  • Fig. 2 is an exploded perspective view showing the means for manufacturing a support element according to the invention.
  • FIG. 3 shows, by a section on a larger scale, a detail of the means represented in FIG. 1.
  • the support element shown in fig. 1, forms a seat or back for a seat.
  • the two opposite edges 1a and 1b of the upper bearing surface 1 have respective radii of curvature slightly smaller than the two opposite edges 2a and 2b corresponding to the lower bearing surface 2.
  • These localized reinforcements 3 can be formed by longitudinal elements, for example sections of wooden battens, prevailing over part of the length of the lateral edges, respectively 1 c , 1 d and 2 c1 2 d , of the two bearing surfaces. upper 1 and lower 2.
  • These localized reinforcements 3 can advantageously receive anchoring devices 5 suitable for serving as a point of attachment of the seat or the backrest on the seat frame for which said seat or said backrest is intended.
  • the two opposite edges 11 a and 11 b of the upper shaper 11 have respective radii of curvature slightly smaller than the two opposite edges 12 a and 12 b corresponding to the lower shaper 12.
  • the two opposite edges 11a, 12a and ll b, 12 b each conformer upper 11 and lower 12 respectively have cylindrical curvatures to reverse concavities.
  • the connecting means 3, interposed between the two upper flat sheets 10 and lower 20, are essentially constituted by localized reinforcements 3 forming spacers, and by a curable foam (not shown for clarity of the drawing in fig. 2, but shown in the Fig. 3) occupying at least partially the space between these two sheets 10 and 20.
  • These localized reinforcements 3 are advantageously constituted by longitudinal elements, for example sections of wooden battens, prevailing over part of the length of the lateral edges, respectively 10, 10 d and 20 c , 20 d , of the two upper sheets 10 and lower 20.
  • the anchoring devices 5 can be provided in the localized reinforcements 3 and be used, as shown in FIG. 3, for maintaining these localized reinforcements 3 during the action of the pressure means F.

Abstract

1. A support element, particularly a seat or back rest, comprising on the one hand two bearing surfaces, viz. an upper bearing surface (1) and a lower bearing surface (2), each consisting of a sheet substantially in a quadrilateral form and, on the other, connecting means (3, 4) interposed between these two bearing surfaces, the upper bearing surface (1) and lower bearing surface (2), in order to maintain them at a distance from each other while rendering them rigid with each other, characterised in that two of the opposite edges (1a and 1b ) of the upper bearing surface (1) and the corresponding two opposite edges (2a and 2b ) of the lower bearing surface (2) are so curved as to exhibit respectively inverted concavities.

Description

L'invention est relative aux éléments de soutien, tels qu'assises ou dossiers de sièges, et à leurs moyens, c'est-à-dire aux dispositifs mis en oeuvre et procédés, pour leur fabrication.The invention relates to support elements, such as seats or seat backs, and their means, that is to say the devices used and methods for their manufacture.

On connait des éléments de soutien de ce genre qui sont constitués en bois lamellé ou en matière plastique et auxquels on donne une forme galbée appropriée par formage, notamment formage à chaud, ou bien par moulage.Supporting elements of this kind are known which are made of laminated wood or of plastic and to which an appropriate curved shape is given by forming, in particular hot forming, or else by molding.

De tels éléments de soutien et leurs procédés de fabrication présentent l'inconvénient d'être d'un coût de réalisation élevé et de mise en oeuvre des techniques d'élaboration complexe.Such support elements and their manufacturing methods have the drawback of being of a high cost of production and of implementing complex production techniques.

La présente invention a pour but de remédier à ces inconvénients.The present invention aims to remedy these drawbacks.

L'élément de soutien conforme à l'invention comporte

  • - deux surfaces d'appui, à savoir une surface d'appui supérieure et une surface d'appui inférieure, constituées chacune par une feuille mise en forme, initialement plane, présentant substantiellement une forme de quadrilatère, et dont deux des bords opposés sont courbés de façon à présenter respectivement des concavités inverses,
  • - et des moyens de liaison, interposés entre ces deux surfaces d'appui,pour les maintenir à distance l'une de l'autre et les solidariser l'une à l'autre.
The support element according to the invention comprises
  • - two bearing surfaces, namely an upper bearing surface and a lower bearing surface, each consisting of a shaped sheet, initially planar, having substantially a quadrilateral shape, and two of whose opposite edges are curved so as to present respectively inverse concavities,
  • - And connecting means, interposed between these two bearing surfaces, to keep them at a distance from one another and to secure them to one another.

Avantageusement, les deux bords opposés de la surface d'appui supérieure présentent des rayons de courbure respectifs légèrement plus petits que les deux bords opposés correspondants de la surface d'appui inférieure.Advantageously, the two opposite edges of the upper bearing surface have respective radii of curvature slightly smaller than the two corresponding opposite edges of the lower bearing surface.

De préférence, les deux bords opposés de chaque surface d'appui présentent respectivement des courbures cylindriques à concavités inverses.Preferably, the two opposite edges of each bearing surface respectively have cylindrical curvatures with reverse concavities.

Constructivement, les moyens de liaison interposés entre les deux surfaces d'appui comprennent

  • - des renforts localisés formant entretoises et solidarisés individuellement aux deux surfaces d'appui,
  • - et une mousse durcissable adhérant aux deux surfaces d'appui et occupant, au moins partiellement, l'espace compris entre ces deux surfaces d'appui.
Constructively, the connecting means interposed between the two bearing surfaces include
  • - localized reinforcements forming spacers and individually secured to the two bearing surfaces,
  • - And a curable foam adhering to the two support surfaces and occupying, at least partially, the space between these two support surfaces.

Les moyens de fabrication d'un élément de soutien conforme à l'invention comportent

  • - un conformateur supérieur dont la surface active (inférieure) présente substantiellement une forme de quadrilatère dont deux des bords opposés sont courbés de façon à présenter respectivement des concavités inverses,
  • - une feuille plane supérieure,
  • - une feuille plane inférieure,
  • - des moyens de liaison interposés entre ces deux feuilles planes pour les maintenir à distance l'une de l'autre et ensuite les solidariser l'une à l'autre,
  • - un conformateur inférieur dont la surface active (supérieure) présente substantiellement une forme de quadrilatère dont deux des bords opposés sont courbés de façon à présenter respectivement des concavités inverses,
  • - et des moyens de pression pour solliciter l'un vers l'autre les deux conformateurs supérieur et inférieur pour provoquer la mise en forme des deux feuilles initialement planes supérieure et inférieure et les conformer en surfaces d'appui supérieure et inférieure. Avantageusement, les deux bords opposés du conformateur supérieur présentent des rayons de courbure respectifs légèrement plus petits que les deux bords opposés correspondants du conformateur inférieur.
The means of manufacturing a support element according to the invention comprise
  • - an upper shaper, the active (lower) surface of which has a substantially quadrilateral shape, two of the opposite edges of which are curved so as to have respectively reverse concavities,
  • - an upper flat sheet,
  • - a lower flat sheet,
  • - connecting means interposed between these two flat sheets to keep them at a distance from one another and then secure them to one another,
  • - a lower shaper, the active (upper) surface of which has a substantially quadrilateral shape, two of the opposite edges of which are curved so as to have respectively reverse concavities,
  • - And pressure means for urging one towards the other the two upper and lower conformers to cause the shaping of the two initially flat upper and lower sheets and to conform them into upper and lower bearing surfaces. Advantageously, the two opposite edges of the upper shaper have respective radii of curvature slightly smaller than the two corresponding opposite edges of the lower shaper.

De préférence, les deux bords opposés de chaque conformateur présentent respectivement des courbures cylindriques à concavités inverses.Preferably, the two opposite edges of each shaper respectively have cylindrical curvatures with reverse concavities.

Les moyens de liaison interposés entre les deux feuilles planes supérieure et inférieure sont essentiellement constitués par des renforts localisés formant entretoises, et par une mousse durcissable occupant au moins partiellement l'espace compris entre ces deux feuilles.The connecting means interposed between the two upper and lower planar sheets are essentially constituted by local reinforcements forming spacers, and by a curable foam occupying at least partially the space between these two sheets.

Selon une méthode de réalisation avantageuse pour la fabrication de chacun des deux conformateurs supérieur et inférieur, on procède de la façon suivante :

  • - on déforme un panneau initialement plan à l'aide d'un support rigide présentant des bords opposés courbés à concavités inverses, cette déformation amenant le panneau à prendre un certain galbe selon ses possibilités physiques de déformation élastique, notamment en fonction de son matériau constitutif et de son épaisseur ;
  • - sur le panneau ainsi déformé, on coule une substance durcissable, telle que du polyesther armé de fibres de verre, afin de le figer dans sa déformation ;
  • - et, le cas échéant, on fixe le panneau déformé et figé sur un support permettant de soumettre, sans dommage, le conformateur ainsi obtenu aux moyens de pression.
According to an advantageous production method for the manufacture of each of the two upper and lower conformers, the procedure is as follows:
  • - a initially flat panel is deformed using a rigid support having opposite curved edges with reverse concavities, this deformation causing the panel to take a certain curve according to its physical possibilities of elastic deformation, in particular as a function of its constituent material and its thickness;
  • - On the panel thus deformed, a curable substance is poured, such as polyester reinforced with glass fibers, in order to freeze it in its deformation;
  • - And, if necessary, the deformed and fixed panel is fixed on a support making it possible to submit, without damage, the conformator thus obtained to the pressure means.

L'invention consiste, mises à part les dispositions dont il vient d'être question, en certaines autres dispositions, qui s'utilisent de préférence en même temps et dont il sera plus explicitement question ci-après.The invention consists, apart from the arrangements which have just been mentioned, in certain other arrangements, which are preferably used at the same time and which will be more explicitly discussed below.

L'invention pourra, de toute façon, être bien comprise à l'aide du complément de description qui suit, ainsi que des dessins ci-annexés, lesquels complément et dessins sont relatifs à un mode de réalisation et d'exécution de l'invention ne comportant, bien entendu, aucun caractère limitatif.The invention may, in any case, be well understood with the aid of the additional description which follows, as well as of the appended drawings, which supplement and drawings relate to an embodiment of the invention. not, of course, having any limiting character.

La figure 1, de ces dessins, est une vue en perspective d'un élément de soutien établi conformément à l'invention.Figure 1 of these drawings is a perspective view of a support element established in accordance with the invention.

La fig. 2 est une vue en perspective éclatée, montrant les moyens pour la fabrication d'un élément de soutien conforme à l'invention.Fig. 2 is an exploded perspective view showing the means for manufacturing a support element according to the invention.

La figure 3 montre, par une coupe à plus grande échelle, un détail des moyens représentés sur la figure 1.FIG. 3 shows, by a section on a larger scale, a detail of the means represented in FIG. 1.

L'élément de soutien,montré sur la fig. 1, forme une assise ou dossier pour un siège.The support element, shown in fig. 1, forms a seat or back for a seat.

Il comporte :

  • - deux surfaces d'appui, à savoir une surface d'appui supérieure 1 et une surface d'appui inférieure 2 constituées chacune par une feuille mise en forme, initialement plane, présentant substantiellement une forme de quadrilatère, et dont deux des bords opposés, la et lb, pour la surface d'appui supérieure 1, et 2a et 2b pour la surface d'appui inférieure2, sont courbés de façon à présenter respectivement des concavités inverses,
  • - et des moyens de liaison 3, 4, interposés entre ces deux surfaces d'appui supérieure 1 et inférieure 2 pour les maintenir à distance l'une de l'autre et les solidariser l'une à l'autre.
It comprises :
  • two support surfaces, namely an upper support surface 1 and a lower support surface 2 each formed by a shaped sheet, initially planar, having substantially a quadrilateral shape, and two of whose opposite edges, and the b for the top bearing surface 1 and 2 and 2b to the bearing surface inférieure2, are bent so as to have inverse concavities respectively,
  • - And connecting means 3, 4, interposed between these two upper 1 and lower 2 bearing surfaces to keep them at a distance from one another and to secure them to one another.

Les deux bords opposés la et 1b de la surface d'appui supérieure 1 présentent des rayons de courbure respectifs légèrement plus petits que les deux bords opposés 2a et 2b correspondants de la surface d'appui inférieure 2.The two opposite edges 1a and 1b of the upper bearing surface 1 have respective radii of curvature slightly smaller than the two opposite edges 2a and 2b corresponding to the lower bearing surface 2.

Ces deux bords opposés la et 1b pour la surface d'appui supérieure 1, et 2a et 2b pour la surface d'appui inférieure 2 présentent respectivement des courbures cylindriques à concavités inverses.These two opposite edges 1a and 1b for the upper support surface 1, and 2a and 2b for the lower support surface 2 respectively have cylindrical curvatures with reverse concavities.

Constructivement, les moyens de liaison 3,4 interposés entre les deux surfaces d'appui supérieure 1 et inférieure 2 comprennent,

  • - des renforts localisés 3, formant entretoises et solidarisés individuellement, par exemple par collage, aux deux susdites surfaces d'appui 1 et 2,
  • - et une mousse durcissable 4 adhérant aux deux surfaces d'appui 1 et 2 et occupant l'espace compris entre ces deux surfaces d'appui 1 et 2.
Constructively, the connection means 3, 4 interposed between the two upper 1 and lower 2 bearing surfaces comprise,
  • - localized reinforcements 3, forming spacers and individually secured, for example by gluing, to the two abovementioned support surfaces 1 and 2,
  • - And a curable foam 4 adhering to the two support surfaces 1 and 2 and occupying the space between these two support surfaces 1 and 2.

Ces renforts localisés 3 peuvent être constitués par des éléments longitudinaux,par exemple des tronçons de tasseaux en bois, régnant sur une partie de la longueur des bords latéraux, respectivement 1c, 1d et 2c1 2d, des deux surfaces d'appui supérieure 1 et inférieure 2.These localized reinforcements 3 can be formed by longitudinal elements, for example sections of wooden battens, prevailing over part of the length of the lateral edges, respectively 1 c , 1 d and 2 c1 2 d , of the two bearing surfaces. upper 1 and lower 2.

Ces renforts localisés 3 peuvent avantageusement recevoir des dispositifs d'ancrage 5 propres à servir de point de fixation de l'assise ou du dossier sur l'ossature du siège auquel ladite assise ou ledit dossier est destiné.These localized reinforcements 3 can advantageously receive anchoring devices 5 suitable for serving as a point of attachment of the seat or the backrest on the seat frame for which said seat or said backrest is intended.

Comme montré sur les fig. 2 et 3, les moyens de fabrication de l'élément de soutien peuvent comporter :

  • - un conformateur supérieur 11 dont la surface active (surface inférieure) présente substantiellement une forme de quadrilatère dont deux des bords opposés 11a et 11b sont courbés de façon à présenter respectivement des concavités inverses,
  • - une feuille plane supérieure 10,
  • - une feuille plane inférieure 20,
  • - des moyens de liaison 3, interposés entre ces deux feuilles planes supérieure 10 et inférieure 20 pour les maintenir à distance l'une de l'autre et ensuite les solidariser l'une à l'autre,
  • - un conformateur inférieur 12 dont la surface active (surface supérieure) présente substantiellement une forme de quadrilatère dont deux des bords opposés 12a et 12b sont courbés de façon à présenter respectivement des concavités inverses,
  • - et des moyens de pression F pour solliciter l'un vers l'autre les deux conformateurs supérieur 11 et et inférieur 12 pour provoquer la mise en forme des deux feuilles initialement planes supérieure 10 et inférieure 20 et les conformer en surfaces d'appui supérieure et inférieure,telles que les surfaces d'appui supérieure 1 et inférieure 2 montrées sur la fig. 1.
As shown in fig. 2 and 3, the means of manufacturing the support element may include:
  • - an upper shaping member 11, the active surface (lower surface) has substantially a quadrilateral shape including two opposite edges 11a and 11b are bent so as to have inverse concavities respectively,
  • - an upper flat sheet 10,
  • a lower flat sheet 20,
  • connecting means 3, interposed between these two upper 10 and lower 20 flat sheets to keep them at a distance from one another and then to secure them to one another,
  • - a lower jig 12, the active surface (upper surface) has substantially a quadrilateral shape including two opposite edges 12a and 12b are bent so as to have inverse concavities respectively,
  • - And pressure means F to urge the two upper 11 and and lower 12 conformers towards each other to cause the two initially flat upper 10 and lower 20 sheets to be shaped and conform them into upper bearing surfaces and lower, such as the upper 1 and lower 2 bearing surfaces shown in FIG. 1.

Avantageusement, les deux bords opposés 11a et 11b du conformateur supérieur 11 présentent des rayons de courbure respectifs légèrement plus petits que les deux bords opposés 12a et 12b correspondants du conformateur inférieur 12.Advantageously, the two opposite edges 11 a and 11 b of the upper shaper 11 have respective radii of curvature slightly smaller than the two opposite edges 12 a and 12 b corresponding to the lower shaper 12.

De préférence, les deux bords opposés 11a, llb et 12a, 12b de chaque conformateur supérieur 11 et inférieur 12 présentent respectivement des courbures cylindriques à concavités inverses.Preferably, the two opposite edges 11a, 12a and ll b, 12 b each conformer upper 11 and lower 12 respectively have cylindrical curvatures to reverse concavities.

Les moyens de liaison 3, interposés entre les deux feuilles planes supérieure 10 et inférieure 20,sont essentiellement constitués par des renforts localisés 3 formant entretoises, et par une mousse durcissable (non représentée pour la clarté du dessin fig. 2, mais représentée sur la fig. 3) occupant au moins partiellement l'espace compris entre ces deux feuilles 10 et 20.The connecting means 3, interposed between the two upper flat sheets 10 and lower 20, are essentially constituted by localized reinforcements 3 forming spacers, and by a curable foam (not shown for clarity of the drawing in fig. 2, but shown in the Fig. 3) occupying at least partially the space between these two sheets 10 and 20.

Ces renforts localisés 3 sont avantageusement constitués par des éléments longitudinaux, par exemple des tronçons de tasseaux en bois, régnant sur une partie de la longueur des bords latéraux, respectivement 10 , 10d et 20c, 20d, des deux feuilles supérieure 10 et inférieure 20.These localized reinforcements 3 are advantageously constituted by longitudinal elements, for example sections of wooden battens, prevailing over part of the length of the lateral edges, respectively 10, 10 d and 20 c , 20 d , of the two upper sheets 10 and lower 20.

Les dispositifs d'ancrage 5 peuvent être prévus dans les renforts localisés 3 et être utilisés, comme montré sur la fig. 3, pour le maintien de ces renforts localisés 3 pendant l'action des moyens de pression F.The anchoring devices 5 can be provided in the localized reinforcements 3 and be used, as shown in FIG. 3, for maintaining these localized reinforcements 3 during the action of the pressure means F.

A cet effet, des éléments complémentaires 6 sont engagés dans ces dispositifs d'ancrage 5 et maintenus par un cadre latéral 7.To this end, complementary elements 6 are engaged in these anchoring devices 5 and held by a lateral frame 7.

La méthode de réalisation pour la fabrication de chacun des deux conformateurs supérieur 11 et inférieur 12 est alors la suivante (fig. 3) :

  • - on déforme un panneau initialement plan P à l'aide d'un support rigide présentant des bords opposés courbés à concavités inverses, cette déformation amenant le panneau P à prendre un certain galbe selon ses possibilités physiques de déformation élastique, notamment en fonction de son matériau constitutif et de son épaisseur (on peut avantageusement choisir un matériau tel que celui connu sous la dénomination commerciale d'ISOREL),
  • - sur le panneau P ainsi déformé, on coule une substance durcissable, telle que du polyesther armé de fibres de verre, afin de le figer dans sa déformation,
  • - et on fixe le panneau déformé et figé sur un support S permettant de soumettre sans dommage le conformateur 11 ou 12 ainsi obtenu aux moyens de pression F.
The method of production for the manufacture of each of the two upper 11 and lower 12 conformers is then as follows (FIG. 3):
  • - A initially plane P panel is deformed using a rigid support having curved opposite edges with reverse concavities, this deformation causing the P panel to take a certain curve according to its physical possibilities of elastic deformation, in particular as a function of its constituent material and its thickness (one can advantageously choose a material such as that known under the trade name of ISOREL),
  • on the panel P thus deformed, a curable substance is poured, such as polyester reinforced with glass fibers, in order to freeze it in its deformation,
  • - And the deformed and fixed panel is fixed on a support S allowing the shaping device 11 or 12 thus obtained to be subjected without damage to the pressure means F.

Claims (11)

1.- Elément de soutien, notamment assise ou dossier, caractérisé par le fait qu'il comporte : - deux surfaces d'appui, à savoir une surface d'appui supérieure (1) et une surface d'appui inférieure (2) constituées chacune par une feuille mise en forme, initialement plane, présentant substantiellement une forme de quadrilatère, et dont deux des bords opposés (la et lb) pour la surface d'appui supérieure (1) et2a et 2b pour la surface d'appui inférieure(2) sont courbés de façon à présenter respectivement des concavités inverses, - et des moyens de liaison (3, 4), interposés entre ces deux surfaces d'appui supérieure (1) et inférieure (2) pour les maintenir à distance l'une de l'autre et les solidariser l'une à l'autre. 1.- Support element, in particular seat or backrest, characterized in that it comprises: - two bearing surfaces, namely an upper bearing surface (1) and a lower bearing surface (2) each formed by a shaped sheet, initially planar, having substantially the shape of a quadrilateral, and two of which opposite edges (la and l b ) for the upper bearing surface (1) and 2a and 2 b for the lower bearing surface (2) are curved so as to have respectively reverse concavities, - And connecting means (3, 4), interposed between these two upper (1) and lower (2) bearing surfaces to keep them at a distance from one another and to secure them one to the other. 2.- Elément de soutien selon la revendication 1, caractérisé par le fait que les deux bords opposés (la et 1b) de la surface d'appui supérieure (1) présentent des rayons de courbure respectifs légèrement plus petits que les deux bords opposés (2a et 2b) correspondants de la surface d'appui inférieure (2).2.- support element according to claim 1, characterized in that the two opposite edges (la and 1 b ) of the upper support surface (1) have respective radii of curvature slightly smaller than the two opposite edges (2a and 2b ) corresponding to the lower bearing surface (2). 3.- Elément de soutien selon la revendication 1 ou 2, caractérisé par le fait que les deux bords opposés (1a et 1b) pour la surface d'appui supérieure (1) et (2a et 2b) pour la surface d'appui inférieure (2) présentent respectivement des courbures cylindriques à concavités inverses.3.- support element according to claim 1 or 2, characterized in that the two opposite edges (1 a and 1 b ) for the upper support surface (1) and (2 a and 2 b ) for the surface lower support (2) respectively have cylindrical curvatures with reverse concavities. 4.- Elément de soutien selon l'une quelconque des revendications 1 à 3, caractérisé par le fait que les moyens de liaison (3, 4) interposés entre les deux surfaces d'appui supérieure (1) et inférieure (2) comprennent, - des renforts localisés (3) formant entretoises et solidarisés individuellement aux deux susdites surfaces d'appui (1 et 2), - et une mousse durcissable (4) adhérant aux deux surfaces d'appui (1 et 2) et occupant, au moins partiellement, l'espace compris entre ces deux surfaces d'appui (1 et 2). 4.- support element according to any one of claims 1 to 3, characterized in that the connecting means (3, 4) interposed between the two upper (1) and lower (2) bearing surfaces comprise, - localized reinforcements (3) forming spacers and individually secured to the two aforementioned bearing surfaces (1 and 2), - And a curable foam (4) adhering to the two support surfaces (1 and 2) and occupying, at least partially, the space between these two support surfaces (1 and 2). 5.- Elément de soutien selon la revendication 4, caractérisé par le fait que ces renforts localisés (3) peuvent être constitués par des éléments longitudinaux régnant sur une partie de la longueur des bords latéraux, respectivement (lc, 1d et 2c, 2d) des deux surfaces d'appui supérieure (1) et inférieure (2).5.- support element according to claim 4, characterized in that these localized reinforcements (3) may be constituted by longitudinal elements prevailing over part of the length of the side edges, respectively (l c , 1 d and 2 c , 2 d ) of the two upper (1) and lower (2) bearing surfaces. 6.- Elément de soutien selon la revendication 5, caractérisé par le fait que ces renforts localisés (3) reçoivent des dispositifs d'ancrage (5) propres à servir de point de fixation de l'élément de soutien.6.- Support element according to claim 5, characterized in that these localized reinforcements (3) receive anchoring devices (5) capable of serving as a point of attachment of the support element. 7.- Moyens de fabrication d'un élément de soutien conforme à l'une quelconque des revendications 1 à 6, caractérisés par le fait qu'ils comportent : - un conformateur supérieur (11) dont la surface active (surface inférieure) présente substantiellement une forme de quadrilatère dont deux des bords opposés (11a et 11b) sont courbés de façon à présenter respectivement des concavités inverses, - une feuille plane supérieure (10), - une feuille plane inférieure (20), - des moyens de liaison (3), interposés entre ces deux feuilles planes supérieure (10) et inférieure (20) pour les maintenir à distance l'une de l'autre et ensuite les solidariser l'une à l'autre, - un conformateur inférieur (12) dont la surface active (surface supérieure) présente substantiellement une forme de quadrilatère dont deux des bords opposés (12 a et 12b) sont courbés de façon à présenter respectivement des concavités inverses, - et des moyens de pression F pour solliciter l'un vers l'autre les deux conformateurs supérieur (11) et inférieur (12) pour provoquer la mise en forme des deux feuilles initialement planes supérieure (10) et inférieure (20) et les conformer en surfaces d'appui supérieure et inférieure, 7. Means for manufacturing a support element according to any one of claims 1 to 6, characterized in that they comprise: - an upper shaping member (11) whose active surface (lower surface) has substantially a quadrilateral shape including two opposite edges (11a and 11b) are bent so as to have inverse concavities respectively, - an upper flat sheet (10), - a lower flat sheet (20), - connecting means (3), interposed between these two upper (10) and lower (20) flat sheets to keep them at a distance from one another and then secure them to one another, - a lower shaper (12), the active surface (upper surface) of which has a substantially quadrilateral shape, two of the opposite edges (12a and 12b ) of which are curved so as to have respectively reverse concavities, - And pressure means F to urge the two upper (11) and lower conformers towards each other (12) to cause the two initially flat upper (10) and lower (20) sheets to be shaped and to conform them into upper and lower bearing surfaces, 8.- Moyens de fabrication d'un élément de soutien selon la revendication 7, caractérisés par le fait que les deux bords opposés (lla et llb) du conformateur supérieur (11) présentent des rayons de courbure respectifs légèrement plus petits que les deux bords opposés (12a et 12b) correspondants du conformateur inférieur 12.8. Means for manufacturing a support element according to claim 7, characterized in that the two opposite edges (ll a and ll b ) of the upper shaper (11) have respective radii of curvature slightly smaller than the two opposite edges (12a and 12b) corresponding lower shaper 12. 9..- Moyens de fabrication d'un élément de soutien selon la revendication 7 ou 8, caractérisés par le fait que les deux bords opposés (11a, 11b et 12a, 12b) de chaque conformateur supérieur (11) et inférieur (12) présentent respectivement des courbures cylindriques à concavités inverses...- 9 Method of producing a support element according to claim 7 or 8, characterized in that the two opposite edges (11a, 11b and 12a, 12b) of each upper shaping (11) and lower (12) respectively have cylindrical curvatures with reverse concavities. 10.- Moyens de fabrication d'un élément de soutien selon l'une quelconque des revendications 7 à 9, caractérisés par le fait que les moyens de liaison (3), interposés entre les deux feuilles planes supérieure (10) et inférieure (20), sont essentiellement constitués par des renforts localisés (3) formant entretoises, et par une mousse durcissable occupant au moins partiellement l'espace compris entre ces deux feuilles (10) et (20).10.- Means for manufacturing a support element according to any one of claims 7 to 9, characterized in that the connecting means (3) interposed between the two upper planar sheets (10) and lower (20 ), are essentially constituted by localized reinforcements (3) forming spacers, and by a curable foam occupying at least partially the space between these two sheets (10) and (20). 11.- Moyens de fabrication d'un élément de soutien selon l'une quelconque des revendications 7 à 10, caractérisés par le fait que, pour fabriquer chacun des deux conformateurs supérieur (11) et inférieur (12) : - on déforme un panneau initialement plan P à l'aide d'un support rigide présentant des bords opposés courbés à concavités inverses, cette déformation amenant le pan- . neau P à prendre un certain galbe selon ses possibilités physiques de déformation élastique, notamment en fonction de son matériau constitutif et de son épaisseur, - sur le panneau P ainsi déformé, on coule une substance durcissable, telle que du polyesther armé de fibres de verre, afin de le figer dans sa déformation, - et on fixe le panneau déformé et figé sur un support S permettant de soumettre sans dommage le conformateur (11 ou 12) ainsi obtenu aux moyens de pression F. 11. Means for manufacturing a support element according to any one of claims 7 to 10, characterized in that, to manufacture each of the two upper (11) and lower (12) conformers: - A panel P initially deformed using a rigid support having curved opposite edges with reverse concavities, this deformation bringing the pan. P level to take a certain curve according to its physical possibilities of elastic deformation, in particular depending of its constituent material and its thickness, on the panel P thus deformed, a curable substance is poured, such as polyester reinforced with glass fibers, in order to freeze it in its deformation, - And the deformed and fixed panel is fixed on a support S allowing the conformator (11 or 12) thus obtained to be subjected without damage to the pressure means F.
EP85402649A 1984-12-28 1985-12-27 Sustaining elements, in particular for seats and seat backs Expired EP0189719B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8420032A FR2575539B1 (en) 1984-12-28 1984-12-28 IMPROVEMENTS IN OR RELATING TO SUPPORTING ELEMENTS, IN PARTICULAR SEATS OR SEAT BACKPACKS, AND THEIR MEANS OF MANUFACTURE
FR8420032 1984-12-28

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EP0189719A1 true EP0189719A1 (en) 1986-08-06
EP0189719B1 EP0189719B1 (en) 1989-10-11

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EP85402649A Expired EP0189719B1 (en) 1984-12-28 1985-12-27 Sustaining elements, in particular for seats and seat backs

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EP (1) EP0189719B1 (en)
DE (1) DE3573519D1 (en)
FR (1) FR2575539B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0388542A1 (en) * 1987-10-13 1990-09-26 KELRIT PTY LTD. trading as Spray Coatings An improved seat shell and cushion construction

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670501A (en) * 1951-08-24 1954-03-02 Us Rubber Co Method of forming plastic material
US3389936A (en) * 1966-04-30 1968-06-25 Drabert Fritz Seats
DE1805447A1 (en) * 1968-10-26 1970-05-14 Continental Gummi Werke Ag Cushion of polyurethane foam
FR2036276A5 (en) * 1969-03-12 1970-12-24 Travaini Ets Shaped articles with rigid or semirigid core

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670501A (en) * 1951-08-24 1954-03-02 Us Rubber Co Method of forming plastic material
US3389936A (en) * 1966-04-30 1968-06-25 Drabert Fritz Seats
DE1805447A1 (en) * 1968-10-26 1970-05-14 Continental Gummi Werke Ag Cushion of polyurethane foam
FR2036276A5 (en) * 1969-03-12 1970-12-24 Travaini Ets Shaped articles with rigid or semirigid core

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0388542A1 (en) * 1987-10-13 1990-09-26 KELRIT PTY LTD. trading as Spray Coatings An improved seat shell and cushion construction

Also Published As

Publication number Publication date
FR2575539B1 (en) 1987-03-06
DE3573519D1 (en) 1989-11-16
EP0189719B1 (en) 1989-10-11
FR2575539A1 (en) 1986-07-04

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