EP0189719A1 - Sustaining elements, in particular for seats and seat backs - Google Patents
Sustaining elements, in particular for seats and seat backs Download PDFInfo
- 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
- Authority
- EP
- European Patent Office
- Prior art keywords
- opposite edges
- support element
- support
- element according
- bearing surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- 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
- A47C7/16—Seats made of wooden, plastics, or metal sheet material; Panel seats
-
- 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
- A47C7/029—Seat 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
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.
- - 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.
- - 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.
- - 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.
- - 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
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.liaison
- 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 bearingsurface 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
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
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.
- - localized
reinforcements 3, forming spacers and individually secured, for example by gluing, to the twoabovementioned support surfaces 1 and 2, - - And a
curable foam 4 adhering to the twosupport surfaces 1 and 2 and occupying the space between these twosupport 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
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
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.
- - 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
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
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
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
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,
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.
- - 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
11 or 12 thus obtained to be subjected without damage to the pressure means F.shaping device
Claims (11)
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 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0189719A1 true EP0189719A1 (en) | 1986-08-06 |
EP0189719B1 EP0189719B1 (en) | 1989-10-11 |
Family
ID=9311108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85402649A Expired EP0189719B1 (en) | 1984-12-28 | 1985-12-27 | Sustaining elements, in particular for seats and seat backs |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0189719B1 (en) |
DE (1) | DE3573519D1 (en) |
FR (1) | FR2575539B1 (en) |
Cited By (1)
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)
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 |
-
1984
- 1984-12-28 FR FR8420032A patent/FR2575539B1/en not_active Expired
-
1985
- 1985-12-27 DE DE8585402649T patent/DE3573519D1/en not_active Expired
- 1985-12-27 EP EP85402649A patent/EP0189719B1/en not_active Expired
Patent Citations (4)
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)
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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