EP0639946B1 - Novel seat upholstery, seat component equipped therewith and method of manufacturing said seat component - Google Patents
Novel seat upholstery, seat component equipped therewith and method of manufacturing said seat component Download PDFInfo
- Publication number
- EP0639946B1 EP0639946B1 EP94904671A EP94904671A EP0639946B1 EP 0639946 B1 EP0639946 B1 EP 0639946B1 EP 94904671 A EP94904671 A EP 94904671A EP 94904671 A EP94904671 A EP 94904671A EP 0639946 B1 EP0639946 B1 EP 0639946B1
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- EP
- European Patent Office
- Prior art keywords
- layer
- upholstery
- springs
- seat
- compact elastomer
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- 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.)
- Expired - Lifetime
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Classifications
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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
- A47C7/18—Seat parts having foamed material included in cushioning part
- A47C7/20—Seat parts having foamed material included in cushioning part with reinforcement in the foam layer
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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
- A47C7/24—Upholstered seats
- A47C7/26—Upholstered seats with reinforcement of the external layer of the upholstery, e.g. vandal resistant
Definitions
- the present invention relates to a new seat cover. It also relates to a seat element equipped with this lining and to a method of manufacturing this seat element.
- US-A-4761 035 discloses a seat cushion for an automobile which can be produced by making one or more support elements made of stretchable fabric, a cushion element made of polyurethane foam and a covering element.
- the support member and the polyurethane foam can be made integral during the polyurethane molding operation.
- the intermediate bonding layer usually has a thickness at least equal to half the diameter of the turns of the spring ply, so that this ply is firmly anchored in this layer.
- the cover layer may naturally include a fabric covering.
- Such a seat trim has the advantage of effectively oppose acts of vandalism, while being flexible.
- the sheet of metal springs prevents the penetration of a sharp object such as a knife and the laceration of the seat element using this object, while ensuring good elasticity, while the layer of cover, which is not subjected to any torsional force, has a low elasticity in its plane, but good flexibility.
- the present invention aims to provide a simpler variant of such a lining, which, while continuing to exhibit anti-vandalism properties, makes it possible to produce seat elements of increased comfort.
- the invention finally aims to provide a packing of this type, in the constitution of which can enter a very light plastic foam and / or having poor mechanical properties.
- the subject of the invention is a seat covering, characterized in that it comprises at least a thin layer of a compact elastomer in which is partially embedded a continuous sheet of helical springs with axes substantially parallel to the faces of this layer, the sheet of springs protruding on one side outside the layer of compact elastomer.
- the part of the spring ply which is not embedded in the layer of compact elastomer is intended to ensure anchoring of a layer of a much thicker expanded polymer, with a view to ensuring great flexibility in the seat produced from the lining, and this is the reason for which the part of the sheet of springs which is not embedded in the layer of compact elastomer emerges from the latter, preferably in a thickness representing 60 to 70% of the diameter of the turns.
- the invention also relates to a seat element comprising a lining as defined above, possibly integral with a frame, this seat element being characterized in that between the lining and the frame is interposed a layer of '' an expanded polymer, which has a thickness greater than that of the compact elastomer layer of the lining and which supports the face of the latter from which the spring ply protrudes, the part of this ply which emerges from the compact elastomer layer being embedded in the expanded polymer layer.
- This layer of expanded polymer is intended to provide the seat thus produced with a much greater flexibility than that of the seats produced with the front linings mentioned above.
- the layer of expanded polymer ensures the bonding and the holding in position of the lining and it makes it possible to produce lining elements resistant to vandalism from one or more pieces of the lining bonded together by the polymer.
- the outer face of the elastomer layer will be sheathed with a sheet of fabric attached to the lining and adhering to the seat support.
- the seat element according to the invention combines therefore excellent qualities of resistance to vandalism, due to the lining which equips it, with very appreciable comfort, due to the layer of expanded polymer which it comprises.
- This expanded polymer could, for example, be a polyurethane or silicone elastomer foam.
- the invention finally relates to a method of production of a seat element equipped with the above-mentioned trim or of several contiguous portions of such a trim, this method being characterized in that this trim is shaped, in that it is applied to this lining, on the side of the spring ply, a mixture of a liquid polymerizable resin capable of expanding, in that this mixture is brought under conditions suitable for causing the polymerization and the expansion of this resin, to form a layer of expanded polymer supporting the layer of compact elastomer of the lining and in which is embedded the part of the sheet of springs of this lining which emerges from the layer of compact elastomer, in that the lining provided with this layer of expanded polymer on a framework, with the layer of compact elastomer facing outwards, and in that the assembly thus produced is covered with a fabric covering.
- the covering attached to the seat element placed on its frame may have dimensions greater than those of the lining itself, so as to provide, in a traditional manner, a lining concealing from view not only the element of seat, but the framework, below which this covering will preferably be fixed.
- Another advantage of the process according to the invention is that, the fabric covering of the seat element being produced only at the end of the implementation of the process, it is possible to choose the color and the drawing of this fabric as a last resort, adapting it to the frame in which the seat will be used.
- the seat upholstery shown in Figure 1 simply comprises a layer 1 of compact elastomer, for example polyvinyl chloride, in which is partially embedded a sheet 2 of metal helical springs, whose axes are substantially parallel to the faces of layer 1
- This layer 1 generally has a thickness of the order of 2 to 2.5 mm and the turns of the springs of the sheet 2 have a diameter of between 5 and 15 mm.
- the springs protrude outside of layer 1 and are embedded in it over only 30 to 40% of their diameter.
- Such a seat cover has the same anti-vandalism properties as the fittings of the prior art, since the sheet 2 of helical springs prevents any laceration using a cutting object such as a knife, and it can be used for the same applications as known fittings.
- a sheet 3 of transfer paper, easily peelable from the layer of compact elastomer, can advantageously be glued to the external face of the layer 1 which is not contiguous to the sheet of springs 2, so as to facilitate the handling of the lining, in particular during of its shaping to equip a seat element.
- this lining equips a seat element which combines the anti-vandalism properties of the lining and the properties of flexibility, elasticity and comfort, which the linings do not offer. known.
- the lining which has just been described is cut to the desired dimensions, and shaped.
- a cushion which equips a frame 4, made of wood for example, next is applied against the lining, on the side of the spring ply 2, a mixture of a polymerizable liquid resin capable of being expanded and then brought this mixture under conditions suitable for simultaneously ensuring its polymerization and its expansion.
- the part of these turns embedded in layer 5 of foam therefore preferably represents from 60 to 70% of the diameter of the turns of the springs.
- the layer 5 will thus ensure the flexibility of the seat element, the comfort of the user and the maintenance of the lining, while the layer of springs 2 will effectively oppose any laceration by vandals and will protect the layer 5 foam.
- the seat element thus produced may be dressed over its entire outer part with a sheet of fabric 6, which will cover the outer face of the compact layer 1 and will fold down below the support 4 to be fixed thereto.
- This sheet 1 can be put in place after the realization of the seat element, in the manner of a simple lining, and therefore will not have to be stretched. It will therefore itself present the flexibility necessary for satisfactory comfort of the user.
- FIG 3 in which the elements already described are designated by the same reference numerals as in Figure 2, assigned the index ', shows another embodiment of a seat element according to the invention.
- the seat element comprises several contiguous portions of the lining according to the invention, one or some being arranged at the upper part of the seat element and the others constituting side cheeks.
- the portions of the coils of the spring plies 2 ′ which emerge from the layer 1 ′ of compact elastomer of each portion of lining are embedded in the same layer 5 ′ of expanded polymer, which ensures the assembly between the various linings and the maintenance in the shape of the whole.
- a sheet of fabric 6 ' covers all of the linings and is fixed against a fastening element 7' fixed on a round wire 8 'of steel, which forms the support in this embodiment.
- a fastening element 7' fixed on a round wire 8 'of steel, which forms the support in this embodiment.
- the advantage of using separate portions of trim in this embodiment lies in the fact that it is possible to orient the spring plies differently for each of the trim portions, in particular of the side cheeks, so as to what they have an excellent flexibility when they are deformed.
- FIG. 4 shows a cushion according to the invention externally covered with a cover sewn with fabric which serves of support.
- the bodies already described in relation to Figure 2 are designated by the same reference numbers assigned the index ''.
- the upper and lower parts of the cushion as well as the lateral cheeks thereof, are constituted by separate portions of a lining according to the invention, the parts of spring plies 2 '' which emerge from the layers 1 '' of compact elastomer of each of them is embedded in the same mass 5 '' of expanded polymer.
- the extra thickness of the parts of the 6 '' layer of fabric assembled by sewing in 9 '' to form a cover are housed in a rebate resulting from a local deformation of a lateral cheek.
- the invention therefore provides a simple means for producing a seat covering which can be used to equip different types of known seats, and a particular seat element, which has excellent comfort properties, while being effectively opposing acts of vandalism.
Landscapes
- Laminated Bodies (AREA)
- Seats For Vehicles (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- Sampling And Sample Adjustment (AREA)
- Springs (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Chairs Characterized By Structure (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Gasket Seals (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
Abstract
Description
La présente invention concerne une nouvelle garniture de siège. Elle concerne également un élément de siège équipé de cette garniture et un procédé de fabrication de cet élément de siège.The present invention relates to a new seat cover. It also relates to a seat element equipped with this lining and to a method of manufacturing this seat element.
On connaît, par US-A-4761 035, un coussin de siège pour automobile qui peut être réalisé en rendant solidaires un ou des éléments de support en tissu étirable, un élément de coussin en mousse de polyuréthane et un élément de couverture. L'élément de support et la mousse de polyuréthane peuvent être rendus solidaires au cours de l'opération de moulage du polyuréthane.US-A-4761 035 discloses a seat cushion for an automobile which can be produced by making one or more support elements made of stretchable fabric, a cushion element made of polyurethane foam and a covering element. The support member and the polyurethane foam can be made integral during the polyurethane molding operation.
Dans ses demandes de brevet antérieures FR-A-2447 167, FR-A-2 664 801 et EP-A-0 100 276, la Demanderesse a également décrit une garniture pour siège, notamment pour siège de transport en commun, comportant trois éléments :
- une couche de couverture compacte, relativement épaisse ;
- une nappe continue de ressorts métalliques hélicoïdaux, à axes parallèles à la couche de couverture, dont les spires viennent sensiblement affleurer la face inférieure de la couche de couverture ;
- une couche intermédiaire de liaison entre la couche de couverture et la nappe de ressorts, cette couche étant réalisée en une mousse de matière plastique d'épaisseur inférieure au diamètre des ressorts et adhérant à la face inférieure de la couche de couverture, de manière à enrober partiellement les spires de la nappe de ressorts.
- a relatively thick, compact cover layer;
- a continuous sheet of helical metal springs, with axes parallel to the cover layer, the turns of which are substantially flush with the underside of the cover layer;
- an intermediate bonding layer between the covering layer and the layer of springs, this layer being made of a plastic foam of thickness less than the diameter of the springs and adhering to the underside of the covering layer, so as to coat partially the turns of the spring ply.
La couche intermédiaire de liaison a habituellement une épaisseur au moins égale à la moitié du diamètre des spires de la nappe de ressorts, afin que cette nappe soit solidement ancrée dans cette couche.The intermediate bonding layer usually has a thickness at least equal to half the diameter of the turns of the spring ply, so that this ply is firmly anchored in this layer.
La couche de couverture peut naturellement comporter un revêtement de tissu.The cover layer may naturally include a fabric covering.
Une telle garniture de siège présente l'avantage de s'opposer efficacement aux actes de vandalisme, tout en présentant une certaine souplesse.Such a seat trim has the advantage of effectively oppose acts of vandalism, while being flexible.
En effet, la nappe de ressorts métalliques empêche la pénétration d'un objet tranchant tel qu'un couteau et la lacération de l'élément de siège à l'aide de cet objet, tout en assurant une bonne élasticité, alors que la couche de couverture, qui n'est soumise à aucun effort en torsion, présente une faible élasticité dans son plan, mais une bonne flexibilité.Indeed, the sheet of metal springs prevents the penetration of a sharp object such as a knife and the laceration of the seat element using this object, while ensuring good elasticity, while the layer of cover, which is not subjected to any torsional force, has a low elasticity in its plane, but good flexibility.
Cette garniture a connu un très grand succès, tant en France que dans les pays étrangers, et de nombreux sièges de transport en commun, notamment de trains, en sont actuellement équipés.This set has been very successful, both in France and in foreign countries, and many public transport seats, especially for trains, are currently fitted with it.
La présente invention vise à proposer une variante, plus simple, d'une telle garniture, qui, tout en continuant à présenter des propriétés anti-vandalisme, permet de réaliser des éléments de siège d'un confort accru.The present invention aims to provide a simpler variant of such a lining, which, while continuing to exhibit anti-vandalism properties, makes it possible to produce seat elements of increased comfort.
Elle vise également à proposer une garniture de ce type qui se prête, de façon simple, à la fabrication d'un élément de siège, dans lequel le revêtement de tissu peut être mis en place sur la garniture et sur le pourtour du siège, en fin de réalisation de celui-ci, dans des conditions plus avantageuses qu'avec la garniture connue mentionnée ci-dessus.It also aims to provide a lining of this type which lends itself, in a simple manner, to the manufacture of a seat element, in which the fabric covering can be placed on the lining and on the periphery of the seat, end of realization thereof, under more advantageous conditions than with the known packing mentioned above.
L'invention a enfin pour but de proposer une garniture de ce type, dans la constitution de laquelle peut entrer une mousse de matière plastique très légère et/ou ayant de médiocres propriétés mécaniques.The invention finally aims to provide a packing of this type, in the constitution of which can enter a very light plastic foam and / or having poor mechanical properties.
A cet effet, l'invention a pour objet une garniture pour siège, caractérisée en ce qu'elle comprend au moins une mince couche d'un élastomère compact dans laquelle est noyée partiellement une nappe continue de ressorts hélicoïdaux à axes sensiblement parallèles aux faces de cette couche, la nappe de ressorts faisant saillie d'un seul côté en dehors de la couche d'élastomère compact.To this end, the subject of the invention is a seat covering, characterized in that it comprises at least a thin layer of a compact elastomer in which is partially embedded a continuous sheet of helical springs with axes substantially parallel to the faces of this layer, the sheet of springs protruding on one side outside the layer of compact elastomer.
Dans une de ses applications, comme on le verra ci-après, la partie de la nappe de ressorts qui n'est pas noyée dans la couche d'élastomère compact est destinée à assurer un ancrage d'une couche d'un polymère expansé beaucoup plus épaisse, en vue d'assurer une grande souplesse au siège réalisé à partir de la garniture, et c'est la raison pour laquelle la partie de la nappe de ressorts qui n'est pas noyée dans la couche d'élastomère compact émerge de celle-ci, de préférence suivant une épaisseur représentant 60 à 70% du diamètre des spires.In one of its applications, as will be seen below, the part of the spring ply which is not embedded in the layer of compact elastomer is intended to ensure anchoring of a layer of a much thicker expanded polymer, with a view to ensuring great flexibility in the seat produced from the lining, and this is the reason for which the part of the sheet of springs which is not embedded in the layer of compact elastomer emerges from the latter, preferably in a thickness representing 60 to 70% of the diameter of the turns.
L'invention a également pour objet un élément de siège comportant une garniture telle que définie ci-dessus, éventuellement solidaire d'une ossature, cet élément de siège étant caractérisé en ce qu'entre la garniture et l'ossature est interposée une couche d'un polymère expansé, qui a une épaisseur supérieure à celle de la couche d'élastomère compact de la garniture et qui soutient la face de celle-ci à partir de laquelle fait saillie la nappe de ressorts, la partie de cette nappe qui émerge de la couche d'élastomère compact étant noyée dans la couche de polymère expansé.The invention also relates to a seat element comprising a lining as defined above, possibly integral with a frame, this seat element being characterized in that between the lining and the frame is interposed a layer of '' an expanded polymer, which has a thickness greater than that of the compact elastomer layer of the lining and which supports the face of the latter from which the spring ply protrudes, the part of this ply which emerges from the compact elastomer layer being embedded in the expanded polymer layer.
Cette couche de polymère expansé est destinée à assurer au siège ainsi réalisé une souplesse bien supérieure à celle des sièges réalisés avec les garnitures antérieures évoquées ci-dessus.This layer of expanded polymer is intended to provide the seat thus produced with a much greater flexibility than that of the seats produced with the front linings mentioned above.
Du fait de la protection assurée par la garniture, qui répartit la pression exercée par l'utilisateur sur le siège sur une grande surface, il est possible d'utiliser comme polymères expansés des polymères plus souples et de moindre résistance mécanique que dans la technique antérieure.Due to the protection provided by the lining, which distributes the pressure exerted by the user on the seat over a large area, it is possible to use, as expanded polymers, polymers which are more flexible and of less mechanical resistance than in the prior art. .
La couche de polymère expansé assure la liaison et le maintien en position de la garniture et elle permet de réaliser des éléments de garnissage résistant au vandalisme à partir d'un ou plusieurs morceaux de la garniture liés entre eux par le polymère.The layer of expanded polymer ensures the bonding and the holding in position of the lining and it makes it possible to produce lining elements resistant to vandalism from one or more pieces of the lining bonded together by the polymer.
Avantageusement, la face externe de la couche d'élastomère sera gainée d'une feuille de tissu rapportée sur la garniture et adhérant au support de siège.Advantageously, the outer face of the elastomer layer will be sheathed with a sheet of fabric attached to the lining and adhering to the seat support.
L'élément de siège conforme à l'invention combine donc d'excellentes qualités de résistance au vandalisme, du fait de la garniture qui l'équipe, à un confort très appréciable, dû à la couche de polymère expansé qu'il comporte.The seat element according to the invention combines therefore excellent qualities of resistance to vandalism, due to the lining which equips it, with very appreciable comfort, due to the layer of expanded polymer which it comprises.
Ce polymère expansé pourra, par exemple, être une mousse de polyuréthane ou d'élastomère de silicone.This expanded polymer could, for example, be a polyurethane or silicone elastomer foam.
L'invention a enfin pour objet un procédé de réalisation d'un élément de siège équipé de la garniture mentionnée ci-dessus ou de plusieurs portions contiguës d'une telle garniture, ce procédé étant caractérisé en ce que l'on met en forme cette garniture, en ce que l'on applique sur cette garniture, du côté de la nappe de ressorts, un mélange d'une résine liquide polymérisable suceptible de s'expanser, en ce que l'on amène ce mélange dans des conditions propres à provoquer la polymérisation et l'expansion de cette résine, pour former une couche de polymère expansé soutenant la couche d'élastomère compact de la garniture et dans laquelle est noyée la partie de la nappe des ressorts de cette garniture qui émerge de la couche d'élastomère compact, en ce que l'on dispose la garniture munie de cette couche de polymère expansé sur une ossature, avec la couche d'élastomère compact tournée vers l'extérieur, et en ce que l'on habille l'ensemble ainsi réalisé d'un revêtement de tissu.The invention finally relates to a method of production of a seat element equipped with the above-mentioned trim or of several contiguous portions of such a trim, this method being characterized in that this trim is shaped, in that it is applied to this lining, on the side of the spring ply, a mixture of a liquid polymerizable resin capable of expanding, in that this mixture is brought under conditions suitable for causing the polymerization and the expansion of this resin, to form a layer of expanded polymer supporting the layer of compact elastomer of the lining and in which is embedded the part of the sheet of springs of this lining which emerges from the layer of compact elastomer, in that the lining provided with this layer of expanded polymer on a framework, with the layer of compact elastomer facing outwards, and in that the assembly thus produced is covered with a fabric covering.
Dans le cas où l'on utilise plusieurs portions contiguës de la garniture conforme à l'invention, c'est donc la couche de polymère expansé dans laquelle sont noyées les parties des nappes de ressort qui émergent de la couche d'élastomère compact des différentes parties de garniture qui assure la liaison entre celles-ci et le maintien en forme de l'ensemble.In the case where several contiguous portions of the lining in accordance with the invention are used, it is therefore the layer of expanded polymer in which the parts of the spring plies are embedded which emerge from the layer of compact elastomer of the different trim parts which ensure the connection between them and keeping the whole shape.
Ce procédé est facile à mettre en oeuvre et il présente l'avantage que la mise en place de l'habillage de tissu n'intervient qu'en dernier lieu, alors que l'élément de siège est déjà réalisé et en place sur son ossature. Ceci permet de rapporter sur le siège une housse en forme, piquée, comme une garniture traditionnelle. Du fait que cet habillage de tissu est rapporté, il est appliqué et collé à l'état non tendu contre la face externe de la couche d'élastomère de l'élément de siège et il n'a donc pas tendance à durcir cette surface, comme s'il était tendu. Au contraire, les personnes assises sur ces sièges ressentent une sensation de souplesse et de confort très supérieure à celle obtenue avec les garnitures antérieures mentionnées ci-dessus.This process is easy to implement and it has the advantage that the fitting of the fabric covering only takes place as a last resort, when the seat element is already made and in place on its framework. . This allows you to bring back on the seat a shaped cover, quilted, like a traditional trim. Because this fabric covering is attached, it is applied and glued in the non-stretched state against the external face of the elastomer layer of the seat element and it therefore does not tend to harden this surface, as if he was tense. On the contrary, the people seated on these seats feel a feeling of suppleness and comfort much greater than that obtained with the previous fittings mentioned above.
L'habillage rapporté sur l'élément de siège mis en place sur son ossature peut avoir des dimensions supérieures à celles de la garniture proprement dite, de manière à pourvoir réaliser, de façon traditionnelle, un garnissage dissimulant au regard non seulement l'élément de siège, mais l' ossature, au-dessous de laquelle cet habillage sera de préférence fixé.The covering attached to the seat element placed on its frame may have dimensions greater than those of the lining itself, so as to provide, in a traditional manner, a lining concealing from view not only the element of seat, but the framework, below which this covering will preferably be fixed.
Un autre avantage du procédé conforme à l'invention est que, l'habillage de tissu de l'élément de siège n'étant réalisé qu'à la fin de la mise en oeuvre du procédé, il est possible de choisir le coloris et le dessin de ce tissu en tout dernier ressort, en l'adaptant au cadre dans lequel le siège sera utilisé.Another advantage of the process according to the invention is that, the fabric covering of the seat element being produced only at the end of the implementation of the process, it is possible to choose the color and the drawing of this fabric as a last resort, adapting it to the frame in which the seat will be used.
Les dessins schématiques annexés illustrent des mises en oeuvre de l'invention. Sur ces dessins :
- La figure 1 est une coupe transversale partielle d'une garniture de siège conforme à l'invention ;
- La figure 2 est une coupe transversale partielle d'un élément de siège équipé d'une garniture conforme à l'invention;
- La figure 3 est une coupe transversale partielle d'un élément de siège équipé d'une garniture conforme à l'invention comprenant plusieurs morceaux contigus, avec des orientations différentes des spires des ressorts ;
- La figure 4 est une coupe analogue à celle de la figure 3, illustrant la possibilité de garnir l'élément de siège d'une housse cousue.
- Figure 1 is a partial cross section of a seat cover according to the invention;
- Figure 2 is a partial cross section of a seat element equipped with a lining according to the invention;
- Figure 3 is a partial cross section of a seat element equipped with a lining according to the invention comprising several adjoining pieces, with different orientations of the turns of the springs;
- Figure 4 is a section similar to that of Figure 3, illustrating the possibility of lining the seat element with a sewn cover.
La garniture de siège représentée sur la figure 1 comprend simplement une couche 1 en élastomère compact, par exemple en polychlorure de vinyle, dans laquelle est partiellement noyée une nappe 2 de ressorts métalliques hélicoïdaux, dont les axes sont sensiblement parallèles aux faces de la couche 1. Cette couche 1 présente généralement une épaisseur de l'ordre de 2 à 2,5 mm et les spires des ressorts de la nappe 2 ont un diamètre compris entre 5 et 15 mm. Les ressorts font saillie en dehors de la couche 1 et sont noyés dans celle-ci sur seulement 30 à 40% de leur diamètre.The seat upholstery shown in Figure 1 simply comprises a layer 1 of compact elastomer, for example polyvinyl chloride, in which is partially embedded a
Une telle garniture de siège présente les mêmes propriétés anti-vandalisme que les garnitures de la technique antérieure, puisque la nappe 2 de ressorts hélicoïdaux s'oppose à une éventuelle lacération à l'aide d'un objet coupant tel qu'un couteau, et elle peut être utilisée pour les mêmes applications que les garnitures connues. Une feuille 3 de papier transfert, décollable facilement de la couche d'élastomère compact, peut avantageusement être collée sur la face externe de la couche 1 non contiguë à la nappe de ressorts 2, de manière à faciliter la manipulation de la garniture, notamment lors de sa mise en forme pour équiper un élément de siège.Such a seat cover has the same anti-vandalism properties as the fittings of the prior art, since the
Dans une utilisation préférée, illustrée par la figure 2 des dessins, cette garniture équipe un élément de siège qui réunit les propriétés anti-vandalisme de la garniture et des propriétés de souplesse, d'élasticité et de confort, que n'offrent pas les garnitures connues.In a preferred use, illustrated by FIG. 2 of the drawings, this lining equips a seat element which combines the anti-vandalism properties of the lining and the properties of flexibility, elasticity and comfort, which the linings do not offer. known.
Dans cette application, la garniture qui vient d'être décrite est découpée aux dimensions voulues, et mise en forme. Pour former un coussin, qui équipe une ossature 4, en bois par exemple, on applique ensuite contre la garniture, du côté de la nappe de ressorts 2, un mélange d'une résine liquide polymérisable apte à être expansée et l'on amène ensuite ce mélange dans des conditions propres à assurer simultanément sa polymérisation et son expansion. On obtient ainsi une couche 5 d'une mousse de matière plastique, qui soutient la couche 1 d'élastomère compact et dans laquelle est noyée, pour assurer une excellente solidarisation de couches 1 et 5, la partie des spires des ressorts qui émerge de la couche 1. La partie de ces spires noyée dans la couche 5 de mousse représente donc, de préférence, de 60 à 70% du diamètre des spires des ressorts. La couche 5 assurera ainsi la souplesse de l'élément de siège, le confort de l'utilisateur et le maintien de la garniture, tandis que la nappe de ressorts 2 s'opposera efficacement à une lacération éventuelle par des vandales et protégera la couche 5 de mousse.In this application, the lining which has just been described is cut to the desired dimensions, and shaped. To form a cushion, which equips a frame 4, made of wood for example, next is applied against the lining, on the side of the
Comme on le voit sur la figure 2, l'élément de siège ainsi réalisé pourra être habillé sur toute sa partie externe d'une feuille de tissu 6, qui recouvrira la face externe de la couche compacte 1 et viendra se replier au-dessous du support 4 pour être fixée à celui-ci. Cette feuille 1 pourra être mise en place après la réalisation de l'élément de siège, à la manière d'une simple garniture, et n'aura donc pas à être tendue. Elle présentera donc elle-même la souplesse nécessaire à un confort satisfaisant de l'usager.As seen in Figure 2, the seat element thus produced may be dressed over its entire outer part with a sheet of
La figure 3, sur laquelle les éléments déjà décrits sont désignés par les mêmes chiffres de référence que sur la figure 2, affectés de l'indice ', représente une autre forme de réalisation d'un élément de siège conforme à l'invention.Figure 3, in which the elements already described are designated by the same reference numerals as in Figure 2, assigned the index ', shows another embodiment of a seat element according to the invention.
Dans cette réalisation, l'élément de siège comporte plusieurs portions contiguës de la garniture conforme à l'invention, l'une ou les unes étant disposées à la partie supérieure de l'élément de siège et les autres constituant des joues latérales. Les portions des spires des nappes de ressorts 2' qui émergent de la couche 1' d'élastomère compact de chaque portion de garniture sont noyées dans une même couche 5' de polymère expansé, qui assure l'assemblage entre les différentes garnitures et le maintien en forme de l'ensemble.In this embodiment, the seat element comprises several contiguous portions of the lining according to the invention, one or some being arranged at the upper part of the seat element and the others constituting side cheeks. The portions of the coils of the
Une feuille de tissu 6' habille l'ensemble des garnitures et vient se fixer contre un élément de fixation 7' fixé sur un fil rond 8' en acier, qui forme le support dans cette forme de réalisation. On pourrait naturellement utiliser tout autre type de support, par exemple un cadre en matière plastique.A sheet of fabric 6 'covers all of the linings and is fixed against a fastening element 7' fixed on a round wire 8 'of steel, which forms the support in this embodiment. One could naturally use any other type of support, for example a plastic frame.
L'intérêt d'utiliser des portions distinctes de garniture, dans cette forme de réalisation, réside dans le fait qu'il est possible d'orienter différemment les nappes de ressorts de chacune des portions de garniture, notamment des joues latérales, de façon à ce qu'elles présentent une excellente souplesse lorsqu'elles sont déformées.The advantage of using separate portions of trim in this embodiment lies in the fact that it is possible to orient the spring plies differently for each of the trim portions, in particular of the side cheeks, so as to what they have an excellent flexibility when they are deformed.
La figure 4 montre un coussin conforme à l'invention revêtu extérieurement d'une housse cousue de tissu qui sert de support. Sur cette figure, les organes déjà décrits en relation avec la figure 2 sont désignes par les mêmes chiffres de référence affectés de l'indice ''.FIG. 4 shows a cushion according to the invention externally covered with a cover sewn with fabric which serves of support. In this figure, the bodies already described in relation to Figure 2 are designated by the same reference numbers assigned the index ''.
Ici encore, les parties supérieure et inférieure du coussin de même que les joues latérales de celui-ci, sont constituées par des portions distinctes d'une garniture conforme à l'invention dont les parties de nappes de ressorts 2'' qui émergent des couches 1'' d'élastomère compact de chacune d'entre elles sont noyées dans une même masse 5'' de polymère expansé.Here again, the upper and lower parts of the cushion as well as the lateral cheeks thereof, are constituted by separate portions of a lining according to the invention, the parts of spring plies 2 '' which emerge from the layers 1 '' of compact elastomer of each of them is embedded in the same mass 5 '' of expanded polymer.
Dans cette réalisation, la surépaisseur des parties de la couche 6'' de tissu assemblées par couture en 9'' pour former une housse viennent se loger dans une feuillure résultant d'une déformation locale d'une joue latérale.In this embodiment, the extra thickness of the parts of the 6 '' layer of fabric assembled by sewing in 9 '' to form a cover are housed in a rebate resulting from a local deformation of a lateral cheek.
Dans toute ces formes de réalisation, l'invention apporte donc un moyen simple pour réaliser une garniture de siège utilisable pour équiper différents types de sièges connus, et un élément de siège particulier, qui présente d'excellentes propriétés de confort, tout en s'opposant efficacement aux actes de vandalisme.In all these embodiments, the invention therefore provides a simple means for producing a seat covering which can be used to equip different types of known seats, and a particular seat element, which has excellent comfort properties, while being effectively opposing acts of vandalism.
Claims (6)
- Upholstery for a seat characterised in that it comprises at least one thin layer (1) of a compact elastomer, in which layer there is partially embedded a continuous layer array (2) of coil springs with their axes substantially parallel to the faces of said layer (1), the layer array (2) of springs projecting on just one side out of the layer (1) of compact elastomer.
- Upholstery according to claim 1 characterised in that the layer array (2) of springs projects out of the layer (1) of compact elastomer by a thickness representing approximately 60 to 70% of the diameter of the turns of the springs.
- A seat element comprising upholstery according to one of claims 1 and 2 which is fixed with respect to a framework (4), said seat element being characterised in that interposed between the upholstery and the framework is a layer (5) of an expanded polymer which is of a thickness greater than that of the layer (1) of compact elastomer of the upholstery and which supports the face thereof from which the layer array (2) of springs projects, the part of said layer array (2) which emerges from the layer (1) of compact elastomer being embedded in the layer (5) of expanded polymer.
- A seat element according to claim 3 characterised in that it comprises a plurality of contiguous portions of upholstery according to one of claims 1 and 2 which are assembled and held in shape by the same layer (5) of an expanded polymer, in which are embedded the parts of the turns of the springs which emerge from the layer (5) of compact elastomer of each of said upholstery portions.
- A seat element according to one of claims 3 and 4 characterised in that the external face of the layer (1) of compact elastomer is covered by a sheet (6) of fabric, which conceals the framework from sight and which can be fixed to said framework.
- A process for the production of a seat element provided with one or more parts of upholstery according to one of claims 1 and 2 characterised in that said upholstery is shaped, that a mixture of a polymerisable liquid resin which is capable of expanding is applied to said upholstery on the side of the layer array (2) of springs, that said mixture is subjected to conditions such as to cause polymerisation and expansion of said resin to form a layer of expanded polymer supporting the layer (1) of compact elastomer of the upholstery, and in which is embedded the part of the layer array (2) of the springs of said upholstery which emerges from the layer of compact elastomer, that the upholstery provided with said layer (5) of expanded polymer is disposed on a framework with the layer of compact elastomer (1) directed outwardly, and that the resulting assembly is covered with a covering of fabric (6).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9302246 | 1993-02-26 | ||
| FR9302246A FR2701823B1 (en) | 1993-02-26 | 1993-02-26 | New seat upholstery, seat element equipped with this lining and method of manufacturing this seat element. |
| PCT/FR1994/000041 WO1994018872A1 (en) | 1993-02-26 | 1994-01-13 | Novel seat upholstery, seat component equipped therewith and method of manufacturing said seat component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0639946A1 EP0639946A1 (en) | 1995-03-01 |
| EP0639946B1 true EP0639946B1 (en) | 1997-07-16 |
Family
ID=9444468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94904671A Expired - Lifetime EP0639946B1 (en) | 1993-02-26 | 1994-01-13 | Novel seat upholstery, seat component equipped therewith and method of manufacturing said seat component |
Country Status (19)
| Country | Link |
|---|---|
| EP (1) | EP0639946B1 (en) |
| JP (1) | JPH07506042A (en) |
| KR (1) | KR950701198A (en) |
| CN (1) | CN1102747A (en) |
| AT (1) | ATE155326T1 (en) |
| AU (1) | AU668013B2 (en) |
| BG (1) | BG61673B1 (en) |
| CA (1) | CA2133641A1 (en) |
| CZ (1) | CZ263094A3 (en) |
| DE (1) | DE69404240T2 (en) |
| DK (1) | DK0639946T3 (en) |
| ES (1) | ES2104344T3 (en) |
| FR (1) | FR2701823B1 (en) |
| GR (1) | GR3024644T3 (en) |
| HU (1) | HUT69481A (en) |
| MX (1) | MX9401361A (en) |
| NO (1) | NO944056L (en) |
| PL (1) | PL173428B1 (en) |
| WO (1) | WO1994018872A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4438013A1 (en) * | 1994-10-25 | 1996-05-02 | Happich Gmbh Gebr | Protective layer, in particular vandalism protective layer |
| FR2782619B1 (en) * | 1998-08-28 | 2000-10-06 | Compin | METHOD FOR MANUFACTURING AN ANTI-LACERATION COVER FOR A SEAT OR THE LIKE, AND A SEAT ELEMENT COMPRISING THE SAME |
| US6694554B2 (en) * | 2001-04-20 | 2004-02-24 | L&P Property Management Company | Fiber mass with side coil insertion |
| FR2891777A1 (en) * | 2005-10-10 | 2007-04-13 | Cera | Seat upholstery for motor vehicle, has cover covering foam body and having central part surrounded partially by peripheral zone that is associated to part by confection, where part is over-molded by foam body |
| FR2891778B1 (en) * | 2005-10-10 | 2008-01-18 | Cera | AUTOMOTIVE VEHICLE SEAT MAINASSURE WHERE THE COATING INCLUDES A DISSOCIATED PARIPHERIC AREA OF THE FOAM |
| ES2694403T3 (en) | 2012-03-29 | 2018-12-20 | Fabricacion Asientos Vehiculos Industriales, S.A. | Anti-vandalism fabric, suitable for seat upholstery |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2530440A2 (en) * | 1982-07-22 | 1984-01-27 | Duret Fils Ets M | Upholstery element resisting laceration for seats or the like and its manufacturing method. |
| AU565961B2 (en) * | 1984-02-03 | 1987-10-01 | Etablissements M. Duret & Fils | Process for making a seat element by moulding a frame on a lining and seat element obtained by said process |
| US4761035A (en) * | 1985-12-24 | 1988-08-02 | Tachikawa Spring Co., Ltd. | Seat cushion assembly |
| GB2214070B (en) * | 1988-01-20 | 1990-11-07 | Ikeda Bussan Co | Covered foamed material for car seats and production thereof |
-
1993
- 1993-02-26 FR FR9302246A patent/FR2701823B1/en not_active Expired - Fee Related
-
1994
- 1994-01-13 DE DE69404240T patent/DE69404240T2/en not_active Expired - Lifetime
- 1994-01-13 ES ES94904671T patent/ES2104344T3/en not_active Expired - Lifetime
- 1994-01-13 HU HU9403022A patent/HUT69481A/en unknown
- 1994-01-13 CN CN94190083A patent/CN1102747A/en active Pending
- 1994-01-13 KR KR1019940703726A patent/KR950701198A/en not_active Application Discontinuation
- 1994-01-13 PL PL94305610A patent/PL173428B1/en unknown
- 1994-01-13 WO PCT/FR1994/000041 patent/WO1994018872A1/en not_active Application Discontinuation
- 1994-01-13 AT AT94904671T patent/ATE155326T1/en not_active IP Right Cessation
- 1994-01-13 DK DK94904671.8T patent/DK0639946T3/en active
- 1994-01-13 AU AU58619/94A patent/AU668013B2/en not_active Ceased
- 1994-01-13 CA CA002133641A patent/CA2133641A1/en not_active Abandoned
- 1994-01-13 CZ CZ942630A patent/CZ263094A3/en unknown
- 1994-01-13 JP JP6518693A patent/JPH07506042A/en active Pending
- 1994-01-13 EP EP94904671A patent/EP0639946B1/en not_active Expired - Lifetime
- 1994-02-23 MX MX9401361A patent/MX9401361A/en not_active Application Discontinuation
- 1994-10-25 NO NO944056A patent/NO944056L/en unknown
- 1994-10-26 BG BG99138A patent/BG61673B1/en unknown
-
1997
- 1997-09-04 GR GR970402282T patent/GR3024644T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ATE155326T1 (en) | 1997-08-15 |
| MX9401361A (en) | 1994-08-31 |
| AU668013B2 (en) | 1996-04-18 |
| FR2701823B1 (en) | 1995-06-02 |
| WO1994018872A1 (en) | 1994-09-01 |
| DK0639946T3 (en) | 1997-08-18 |
| GR3024644T3 (en) | 1997-12-31 |
| NO944056D0 (en) | 1994-10-25 |
| KR950701198A (en) | 1995-03-23 |
| CN1102747A (en) | 1995-05-17 |
| AU5861994A (en) | 1994-09-14 |
| BG99138A (en) | 1995-06-30 |
| BG61673B1 (en) | 1998-03-31 |
| ES2104344T3 (en) | 1997-10-01 |
| DE69404240D1 (en) | 1997-08-21 |
| FR2701823A1 (en) | 1994-09-02 |
| NO944056L (en) | 1994-10-25 |
| JPH07506042A (en) | 1995-07-06 |
| HU9403022D0 (en) | 1994-12-28 |
| HUT69481A (en) | 1995-09-28 |
| EP0639946A1 (en) | 1995-03-01 |
| DE69404240T2 (en) | 1998-01-02 |
| PL305610A1 (en) | 1995-01-23 |
| CZ263094A3 (en) | 1995-02-15 |
| CA2133641A1 (en) | 1994-09-01 |
| PL173428B1 (en) | 1998-03-31 |
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