WO1994018872A1 - 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 PDF

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Publication number
WO1994018872A1
WO1994018872A1 PCT/FR1994/000041 FR9400041W WO9418872A1 WO 1994018872 A1 WO1994018872 A1 WO 1994018872A1 FR 9400041 W FR9400041 W FR 9400041W WO 9418872 A1 WO9418872 A1 WO 9418872A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
elastomer
lining
springs
sheet
Prior art date
Application number
PCT/FR1994/000041
Other languages
French (fr)
Inventor
Jean-Louis Danton
Original Assignee
Etablissements Duret
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Etablissements Duret filed Critical Etablissements Duret
Priority to AU58619/94A priority Critical patent/AU668013B2/en
Priority to JP6518693A priority patent/JPH07506042A/en
Priority to KR1019940703726A priority patent/KR950701198A/en
Priority to PL94305610A priority patent/PL173428B1/en
Priority to EP94904671A priority patent/EP0639946B1/en
Priority to DE69404240T priority patent/DE69404240T2/en
Publication of WO1994018872A1 publication Critical patent/WO1994018872A1/en
Priority to NO944056A priority patent/NO944056L/en
Priority to BG99138A priority patent/BG61673B1/en
Priority to GR970402282T priority patent/GR3024644T3/en

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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
    • A47C7/18—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
    • 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.
  • a compact, relatively thick 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 spring ply, 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 partially coat the turns of the spring ply.
  • 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 opposing acts of vandalism, while having a certain flexibility.
  • 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 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 filling for a seat, characterized in that it comprises at least one thin layer of an 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 elastomer layer.
  • the part of the sheet of springs which is not embedded in the layer of elastomer is intended to ensure anchoring of a layer of a much more expanded polymer. thick, in order to ensure great flexibility in the seat produced from the lining, and this is the reason why the part of the sheet of springs which is not embedded in the layer of elastomer emerges from it.
  • ci preferably according to 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 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 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 therefore combines 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 may, 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.
  • 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 flexibility and comfort much greater than that obtained with the above-mentioned front fittings.
  • 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.
  • 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.
  • 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 the ply 1 and are embedded therein 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 not contiguous with 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 to the lining, on the side of the spring ply 2, is applied 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 sheet of springs 2 will effectively oppose any laceration by vandals and protect the layer 5 foam.
  • the seat element thus produced can 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.
  • 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.
  • 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.
  • a sheet of fabric 6 ′ covers all of the linings and is fixed against a fixing element 7 1 fixed on a round wire 8 ′ of steel, which forms the support in this embodiment.
  • a plastic frame for example a plastic frame.
  • 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, consist of 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 layer 6 "of fabric assembled by sewing at 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.

Abstract

Seat upholstery comprising at least one thin layer (1) of an elastomer in which is partially embedded a continuous layer (2) of helical springs, the axes of which lie substantially parallel to the faces of said elastomer layer (1). The layer (2) of springs protrudes from only one side of the elastomer layer (1).

Description

NOUVELLE GARNITURE DE SIEGE, ELEMENT DE SIEGE EQUIPE DE CETTE GARNITURE ET PROCEDE DE FABRICATION DE CET ELEMENT DE SIEGE.NOVEL SEAT TRIM, SEAT ELEMENT PROVIDED WITH SUCH TRIM AND METHOD OF MANUFACTURING THE SEAT ELEMENT.
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.
Dans ses demandes de brevet français n°79 02063, déposée le 26 Janvier 1979 (n° de publication 2 447 167) et n° 90 09325, déposée le 20 Juillet 1990 (n° de publication 2 664 801), la Demanderesse a décrit une garniture pour siège, notamment pour siège de transport en commun, comportant trois éléments :In its French patent applications No. 79 02063, filed January 26, 1979 (publication No. 2,447,167) and No. 90,09325, filed July 20, 1990 (publication No. 2,664,801), the Applicant has described a seat cover, in particular for a public transport seat, comprising three elements:
- 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 compact, relatively thick 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 spring ply, 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 partially coat 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. La couche de couverture peut naturellement comporter un revêtement de tissu.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.
Une telle garniture de siège présente l'avantage de s'opposer efficacement aux actes de vandalisme, tout en présentant une certaine souplesse. 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.Such a seat trim has the advantage of effectively opposing acts of vandalism, while having a certain flexibility. 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 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 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. 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 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 émerge de celle-ci, de préférence suivant une épaisseur représentant 60 à 70% du diamètre des spires.To this end, the subject of the invention is a filling for a seat, characterized in that it comprises at least one thin layer of an 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 elastomer layer. In one of its applications, as will be seen below, the part of the sheet of springs which is not embedded in the layer of elastomer is intended to ensure anchoring of a layer of a much more expanded polymer. thick, in order to ensure great flexibility in the seat produced from the lining, and this is the reason why the part of the sheet of springs which is not embedded in the layer of elastomer emerges from it. ci, preferably according to 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 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 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 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 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 therefore combines 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 -nousse de polyuréthane ou d'élastomère de silicone.This expanded polymer may, 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. 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. 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.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. 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 flexibility and comfort much greater than that obtained with the above-mentioned front fittings. 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 :The appended schematic drawings illustrate implementations of the invention. In these drawings:
La figure 1 est une coupe transversale partielle d'une garniture de siège conforme à l'invention ;Figure 1 is a partial cross section of a seat cover according to the invention;
La figure 2 est une coupe transversale partielle d'un élément de siège équipé d'une garniture conforme à l'invention;Figure 2 is a partial cross section of a seat element equipped with a lining according to the 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 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 nappe 1 et sont noyés dans celle-ci sur seulement 30 à 40% de leur diamètre. 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.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 the ply 1 and are embedded therein 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 not contiguous with 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.
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 to the lining, on the side of the spring ply 2, is applied 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. This gives a layer 5 of a plastic foam, which supports the layer 1 of compact elastomer and in which is embedded, to ensure excellent securing of layers 1 and 5, the part of the coils of the springs which emerges from the layer 1. 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 sheet of springs 2 will effectively oppose any laceration by vandals and protect the layer 5 foam.
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. 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. 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 21 qui émergent de la couche l' 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. Une feuille de tissu 6' habille l'ensemble des garnitures et vient se fixer contre un élément de fixation 71 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.As seen in Figure 2, the seat element thus produced can 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. 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. 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 spring plies 2 1 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 fixing element 7 1 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 désignés 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, consist of 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. 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 this embodiment, the extra thickness of the parts of the layer 6 "of fabric assembled by sewing at 9" to form a cover are housed in a rebate resulting from a local deformation of a lateral cheek. 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

REVENDICATIONS
1- Garniture pour siège, caractérisée en ce qu'elle comprend au moins une mince couche (1) d'un élastomère dans laquelle est noyée partiellement une nappe continue (2) de ressorts hélicoïdaux à axes sensiblement parallèles aux faces de cette couche (l), la nappe (2) de ressorts faisant saillie d'un seul côté en dehors de la couche (l) d'élastomère.1- Seat trim, characterized in that it comprises at least one thin layer (1) of an elastomer in which is partially embedded a continuous sheet (2) of helical springs with axes substantially parallel to the faces of this layer (l ), the sheet (2) of springs projecting on one side only outside the layer (l) of elastomer.
2- Garniture selon la revendication 1, caractérisée en ce que la nappe (2) de ressorts fait saillie en dehors de la couche (l) d'élastomère suivant une épaisseur représentant environ 60 à 70% du diamètre des spires des ressorts.2- Trim according to claim 1, characterized in that the sheet (2) of springs projects outside the layer (l) of elastomer at a thickness representing approximately 60 to 70% of the diameter of the turns of the springs.
3- Elément de siège comportant une garniture selon l'une des revendications 1 et 2, solidaire d'une ossature3- Seat element comprising a trim according to one of claims 1 and 2, integral with a frame
(4), cet élément de siège étant caractérisé en ce qu'entre la garniture et l'ossature est interposée une couche (5) d'un polymère expansé, qui a une épaisseur supérieure à celle de la couche d'élastomère (l) de la garniture et qui supporte la face de celle-ci à partir de laquelle fait saillie la nappe (2) de ressorts, la partie de cette nappe (2) qui émerge de la couche (l) d'élastomère étant noyée dans la couche (5) de polymère expansé.(4), this seat element being characterized in that between the trim and the frame is interposed a layer (5) of an expanded polymer, which has a thickness greater than that of the elastomer layer (l) of the lining and which supports the face thereof from which the sheet (2) of springs projects, the part of this sheet (2) which emerges from the layer (l) of elastomer being embedded in the layer (5) expanded polymer.
4- Elément de siège selon la revendication 3, caractérisé en ce qu'il comprend plusieurs portions contiguës d'une garniture selon l'une des revendications 1 et 2, assemblées et maintenues en forme par une même couche (5) d'un polymère expansé, dans laquelle sont noyées les parties des spires des ressorts qui émergent de la couche (i) d'élastomère de chacune desdites portions de garniture.4- Seat element according to claim 3, characterized in that it comprises several contiguous portions of a lining according to one of claims 1 and 2, assembled and held in shape by the same layer (5) of a polymer expanded, in which the parts of the turns of the springs which emerge from the layer (i) of elastomer of each of said lining portions are embedded.
5- Elément de siège selon l'une des revendications 3 et 4, caractérisé en ce que la face externe de la couche (1) d'élastomère est habillée d'une feuille (6) de tissu, qui dissimule l'ossature aux regards et qui peut être fixée sur cette ossature.5- Seat element according to one of claims 3 and 4, characterized in that the external face of the layer (1) of elastomer is covered with a sheet (6) of fabric, which conceals the frame from view and which can be fixed on this framework.
6- Procédé de fabrication d'un élément de siège équipé d'une ou plusieurs parties d'une garniture selon l'une des revendications 1 et 2, 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 (2) de ressorts, un mélange d'une résine liquide polymérisable susceptible 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 supportant la couche (1) d'élastomère compact de la garniture, et dans laquelle est noyée la partie de la nappe (2) 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 (5) de polymère expansé sur une ossature, avec la couche d'élastomère compact (l) tournée vers l'extérieur, et en ce que l'on habille l'ensemble ainsi réalisé d'un revêtement de tissu (6). 6- Method for manufacturing a seat element equipped with one or more parts of a trim according to one of claims 1 and 2, characterized in that one shapes this lining, in that we apply to this lining, on the side of the sheet (2) of springs, a mixture of a polymerizable liquid resin capable of expanding, in that we bring this mixing under conditions suitable for causing the polymerization and expansion of this resin to form a layer of expanded polymer supporting the layer (1) of compact elastomer of the lining, and in which the part of the sheet (2) is embedded springs of this lining which emerges from the layer of compact elastomer, in that the lining provided with this layer (5) of expanded polymer is placed on a frame, with the layer of compact elastomer (l) facing towards the exterior, and in that the assembly thus produced is covered with a fabric covering (6).
PCT/FR1994/000041 1993-02-26 1994-01-13 Novel seat upholstery, seat component equipped therewith and method of manufacturing said seat component WO1994018872A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
AU58619/94A AU668013B2 (en) 1993-02-26 1994-01-13 Seat upholstery, seat component equipped therewith and method of manufacturing said seat component
JP6518693A JPH07506042A (en) 1993-02-26 1994-01-13 Novel chair lining, chair equipped with this lining, and method for manufacturing this chair
KR1019940703726A KR950701198A (en) 1993-02-26 1994-01-13 NOVEL SEAT UPHOLSTERY <SEAT COMPONENT EOUIPPED THEREWITH AND METHOD OF MANUFACTRUING SAID SEAT COMPONENT
PL94305610A PL173428B1 (en) 1993-02-26 1994-01-13 Upholstery, seat component provided with such upholstery and method of making said seat component
EP94904671A EP0639946B1 (en) 1993-02-26 1994-01-13 Novel seat upholstery, seat component equipped therewith and method of manufacturing said seat component
DE69404240T DE69404240T2 (en) 1993-02-26 1994-01-13 NEW SEAT COVER, SEAT ELEMENT EQUIPPED WITH THIS COVER AND METHOD FOR PRODUCING SUCH AN ELEMENT
NO944056A NO944056L (en) 1993-02-26 1994-10-25 Seat padding, seat element equipped with the padding, and method of manufacturing the seat element
BG99138A BG61673B1 (en) 1993-02-26 1994-10-26 New gasket for a seat, element for the seat and method for its manufacture
GR970402282T GR3024644T3 (en) 1993-02-26 1997-09-04 Novel seat upholstery, seat component equipped therewith and method of manufacturing said seat component.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR93/02246 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.

Publications (1)

Publication Number Publication Date
WO1994018872A1 true WO1994018872A1 (en) 1994-09-01

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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

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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)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0709182A2 (en) * 1994-10-25 1996-05-01 Gebr. Happich GmbH Protection layer especially against vandalism
EP0981982A1 (en) * 1998-08-28 2000-03-01 Compin A method of manufacturing an anti-laceration cover for a seat or the like and seat element with such cover
US7125465B2 (en) * 2001-04-20 2006-10-24 L & P Property Management Company Method of making resilient structure including inserting heated coil spring through side surface of fiber batt

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
PL2644760T3 (en) 2012-03-29 2019-03-29 Fabricacion Asientos Vehiculos Industriales, S.A. Anti-vandalism fabric suitable for upholstering seats

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EP0100276A2 (en) * 1982-07-22 1984-02-08 ETABLISSEMENTS M. DURET & FILS Société Anonyme dite: Method of manufacturing a seat element by moulding a frame on upholstery, and seat element made thereby
US4761035A (en) * 1985-12-24 1988-08-02 Tachikawa Spring Co., Ltd. Seat cushion assembly
US4833741A (en) * 1988-01-20 1989-05-30 Ikeda Bussan Co, Ltd. Seat material and a method of producing the same

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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

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EP0100276A2 (en) * 1982-07-22 1984-02-08 ETABLISSEMENTS M. DURET & FILS Société Anonyme dite: Method of manufacturing a seat element by moulding a frame on upholstery, and seat element made thereby
US4761035A (en) * 1985-12-24 1988-08-02 Tachikawa Spring Co., Ltd. Seat cushion assembly
US4833741A (en) * 1988-01-20 1989-05-30 Ikeda Bussan Co, Ltd. Seat material and a method of producing the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0709182A2 (en) * 1994-10-25 1996-05-01 Gebr. Happich GmbH Protection layer especially against vandalism
EP0709182A3 (en) * 1994-10-25 1998-09-02 HAPPICH Fahrzeug- und Industrieteile GmbH Protection layer especially against vandalism
EP0981982A1 (en) * 1998-08-28 2000-03-01 Compin A method of manufacturing an anti-laceration cover for a seat or the like and seat element with such cover
US7125465B2 (en) * 2001-04-20 2006-10-24 L & P Property Management Company Method of making resilient structure including inserting heated coil spring through side surface of fiber batt

Also Published As

Publication number Publication date
AU668013B2 (en) 1996-04-18
DE69404240D1 (en) 1997-08-21
ES2104344T3 (en) 1997-10-01
DE69404240T2 (en) 1998-01-02
PL173428B1 (en) 1998-03-31
EP0639946B1 (en) 1997-07-16
CZ263094A3 (en) 1995-02-15
JPH07506042A (en) 1995-07-06
EP0639946A1 (en) 1995-03-01
CN1102747A (en) 1995-05-17
BG61673B1 (en) 1998-03-31
HUT69481A (en) 1995-09-28
GR3024644T3 (en) 1997-12-31
HU9403022D0 (en) 1994-12-28
BG99138A (en) 1995-06-30
MX9401361A (en) 1994-08-31
AU5861994A (en) 1994-09-14
DK0639946T3 (en) 1997-08-18
FR2701823B1 (en) 1995-06-02
CA2133641A1 (en) 1994-09-01
KR950701198A (en) 1995-03-23
NO944056D0 (en) 1994-10-25
ATE155326T1 (en) 1997-08-15
PL305610A1 (en) 1995-01-23
NO944056L (en) 1994-10-25
FR2701823A1 (en) 1994-09-02

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