WO2021105503A1 - Stuffing for a motor vehicle seat - Google Patents

Stuffing for a motor vehicle seat Download PDF

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Publication number
WO2021105503A1
WO2021105503A1 PCT/EP2020/083916 EP2020083916W WO2021105503A1 WO 2021105503 A1 WO2021105503 A1 WO 2021105503A1 EP 2020083916 W EP2020083916 W EP 2020083916W WO 2021105503 A1 WO2021105503 A1 WO 2021105503A1
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WO
WIPO (PCT)
Prior art keywords
format
padding
ink
seam
electrodes
Prior art date
Application number
PCT/EP2020/083916
Other languages
French (fr)
Inventor
Mohamed BENLAGHA
Lluis PUIG
Original Assignee
Tesca France
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 Tesca France filed Critical Tesca France
Priority to EP20824119.0A priority Critical patent/EP4065414A1/en
Publication of WO2021105503A1 publication Critical patent/WO2021105503A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/56—Heating or ventilating devices
    • B60N2/5678—Heating or ventilating devices characterised by electrical systems
    • B60N2/5685—Resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/58—Seat coverings

Definitions

  • the invention relates to a padding for a motor vehicle seat, a cover of such padding and a seat comprising such padding.
  • a cover for lining said block said cover comprising at least one flexible covering format provided with an electric heating circuit intended to be connected to an electric generator, so as to form a heating format, knowing that said circuit: o is based on conductive ink comprising a matrix of plastic material provided with a dispersion of conductive particles, in particular metallic, said ink being printed on the reverse side of said format, o comprises two electrodes, connected to connection terminals at each of the poles of said generator , and at least one resistive strip of substantially constant width L extending between said electrodes, said strip being intended to form a heating resistor.
  • This provides a heated seat to improve occupant comfort.
  • Ink printing is done in particular by screen printing.
  • the width of the resistive band corresponds throughout this description to the dimension of said band along the perpendicular to the direction of current flow. Usually, this width is small, for example of the order of 4 mm, in order to create sufficient resistance to the flow of current to create heating of the heating format.
  • the heated format may be provided with at least one seam - in particular decorative - extending in particular over the resistive strip, said seam forming in said format a plurality of seam holes.
  • a stitch hole having a diameter of 0.1 mm is likely to create a rupture initiation of the circuit risking drastically reducing the section of said band and generating a "hot spot".
  • the aim of the invention is to overcome these drawbacks.
  • the invention provides padding for a motor vehicle seat, said padding comprising successively:
  • a cover for lining said block said cover comprising at least one flexible covering format provided with an electric heating circuit intended to be connected to an electric generator, so as to form a heating format, knowing that said circuit: o is based on conductive ink comprising a matrix of plastic material provided with a dispersion of conductive particles, in particular metallic, said ink being printed on the reverse side of said format, o comprises two electrodes, connected to connection terminals at each of the poles of said generator , and at least one resistive band of substantially constant width L extending between said electrodes, said strip being intended to form a heating resistance, said padding also having the following characteristics:
  • said format is provided with at least one seam extending over said resistive strip, said seam forming in said format a plurality of seam holes separated from each other by a stitch pitch P,
  • the invention provides a cap of such padding and a seat comprising such padding.
  • FIG.1 is a schematic front view of a padding according to an arrangement
  • FIG.2 is a detailed schematic sectional view of the padding of Figure 1 according to one embodiment of the heated format.
  • a padding 1 for a motor vehicle seat comprising successively:
  • a cover 3 for lining said block said cover comprising at least one flexible covering format 4 provided with an electric heating circuit 5 intended to be connected to an electric generator, so as to form a heating format, knowing that said circuit : o is based on conductive ink comprising a matrix of plastic material provided with a dispersion of conductive particles, said ink being printed - in particular by screen printing - on the reverse side of said format, o comprises two electrodes 6, connected to connection terminals 7 at each of the poles of said generator, and at least one resistive strip 8 - in this case a plurality according to the arrangement of FIG. 1 - of substantially constant width L extending between said electrodes, said strip being intended to form a heating resistor, said padding also having the following characteristics:
  • said format is provided with at least one seam 9 extending over said resistive strip, said seam forming in said format a plurality of seam holes 10 separated from each other by a seam pitch P, for example between 3 and 5 mm,
  • the electrodes 6 are based on a first ink comprising particles of low resistivity
  • a resistive strip 8 is based on a second ink comprising particles of high resistivity compared to that of said first ink.
  • the low resistivity particles are based on metal, for example copper,
  • the high resistivity particles are carbon based.
  • the resistivity of the metallic ink is for example of the order of 0.5.10 4 Qm
  • the resistivity of the carbon-based ink is for example of the order of 30.10 -4 Qm
  • the circuit 5 is based on a single ink printed in greater thickness in the electrodes 6 than in a resistive strip 8, so as to make it possible to lower its electrical resistance in said electrodes and to increase it in said strip.
  • an ink thickness of between 0.05 and 0.5 mm can be provided.
  • a resistive strip 8 has the general shape of a rectangle.
  • the heating format 4 is in the form of a complex comprising successively associated with one another: • an outer coating layer 11, for example based on leather or textile,
  • the heating format 4 is associated edge to edge - for example by stitching or welding - with at least one other format not provided with an electrical circuit.
  • the cap 3 is fitted on the padding block 2.
  • the cap 3 is overmolded, at least in part, by the padding block 2, said block being based on molded foam.
  • a cover 3 of such a padding 1 is now described, said cover comprising at least one flexible covering format 4 provided with an electric heating circuit 5 intended to be connected to an electric generator, so as to form a heating format. , knowing that said circuit:
  • • comprises two electrodes 6, connected to connection terminals 7 at each of the poles of said generator, and at least one resistive strip 8 of substantially constant width L extending between said electrodes, said strip being intended to form a heating resistor, said cap further having the following characteristics: • said format is provided with at least one seam 9 extending over said resistive strip, said seam forming in said format a plurality of seam holes 10 separated from each other by a seam pitch P,
  • a motor vehicle seat comprising a frame and such a padding 1 is described, said padding being mounted to cover said frame.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Surface Heating Bodies (AREA)
  • Resistance Heating (AREA)

Abstract

The invention relates to stuffing (1) for a motor vehicle seat, successively comprising an elastically compressible padding block and a cover (3) comprising at least one format (4) provided with a conductive ink-based electrical heating circuit (5) comprising a plastics material matrix provided with a dispersion of conductive particles, said ink being printed on the back of said format, and comprising two electrodes (6) and at least one resistive strip (8) of width (L) that is intended to form a resistive heating element, said format being provided with at least one stitching (9) extending over said resistive strip, said stitching forming, in said format, a plurality of stitching holes (10) which are separated from one another by a stitching pitch (P), said width and said stitching pitch being linked together by the inequality: L > 5P.

Description

DESCRIPTION DESCRIPTION
Titre : Matelassure pour siège de véhicule automobile Title: Padding for motor vehicle seat
L’invention concerne une matelassure pour siège de véhicule automobile, une coiffe d’une telle matelassure et un siège comprenant une telle matelassure. The invention relates to a padding for a motor vehicle seat, a cover of such padding and a seat comprising such padding.
Il est connu de réaliser une matelassure pour siège de véhicule automobile, ladite matelassure comprenant successivement : It is known to produce a padding for a motor vehicle seat, said padding comprising successively:
• un bloc de rembourrage élastiquement compressible, • an elastically compressible padding block,
• une coiffe de garnissage dudit bloc, ladite coiffe comprenant au moins un format de revêtement souple pourvu d’un circuit électrique de chauffage destiné à être connecté à un générateur électrique, de manière à former un format chauffant, sachant que ledit circuit : o est à base d’encre conductrice comprenant une matrice en matériau plastique pourvue d’une dispersion de particules conductrices, notamment métalliques, ladite encre étant imprimée en envers dudit format, o comprend deux électrodes, reliées à des bornes de connexion à chacun des pôles dudit générateur, et au moins une bande résistive de largeur L sensiblement constante s’étendant entre lesdites électrodes, ladite bande étant destinée à former une résistance chauffante. • a cover for lining said block, said cover comprising at least one flexible covering format provided with an electric heating circuit intended to be connected to an electric generator, so as to form a heating format, knowing that said circuit: o is based on conductive ink comprising a matrix of plastic material provided with a dispersion of conductive particles, in particular metallic, said ink being printed on the reverse side of said format, o comprises two electrodes, connected to connection terminals at each of the poles of said generator , and at least one resistive strip of substantially constant width L extending between said electrodes, said strip being intended to form a heating resistor.
On dispose ainsi d’un siège chauffant permettant d’améliorer le confort de l’occupant. This provides a heated seat to improve occupant comfort.
L’impression de l’encre se fait notamment par sérigraphie. Ink printing is done in particular by screen printing.
La largeur de la bande résistive correspond dans toute cette description à la dimension de ladite bande selon la perpendiculaire au sens de passage du courant. Usuellement, cette largeur est faible, par exemple de l’ordre de 4 mm, ceci afin de créer une résistance suffisante au passage du courant pour créer un échauffement du format chauffant. The width of the resistive band corresponds throughout this description to the dimension of said band along the perpendicular to the direction of current flow. Usually, this width is small, for example of the order of 4 mm, in order to create sufficient resistance to the flow of current to create heating of the heating format.
Il peut être souhaité de pourvoir le format chauffant d’au moins une couture - en particulier décorative - s’étendant notamment sur la bande résistive, ladite couture formant dans ledit format une pluralité de trous de couture. It may be desired to provide the heated format with at least one seam - in particular decorative - extending in particular over the resistive strip, said seam forming in said format a plurality of seam holes.
De par la présence de ces trous de couture, on a un risque de dégradation localisée de la bande résistive pouvant mener à l’apparition de « points chauds » (effet Joule), liés à un rétrécissement de la section de passage du courant, ce qui peut entraîner une dégradation du format chauffant et un risque d’incendie. Due to the presence of these seam holes, there is a risk of localized degradation of the resistive strip which may lead to the appearance of "hot spots" (Joule effect), linked to a narrowing of the current flow section, this which may cause degradation of the heating format and a fire hazard.
Par exemple, dans une bande résistive de largeur 4 mm, un trou de couture présentant un diamètre de 0,1 mm est susceptible de créer une amorce de rupture du circuit risquant de réduire drastiquement la section de ladite bande et de générer un « point chaud ». For example, in a resistive band of width 4 mm, a stitch hole having a diameter of 0.1 mm is likely to create a rupture initiation of the circuit risking drastically reducing the section of said band and generating a "hot spot". ".
L’invention a pour but de pallier ces inconvénients. The aim of the invention is to overcome these drawbacks.
A cet effet, et selon un premier aspect, l’invention propose une matelassure pour siège de véhicule automobile, ladite matelassure comprenant successivement : To this end, and according to a first aspect, the invention provides padding for a motor vehicle seat, said padding comprising successively:
• un bloc de rembourrage élastiquement compressible, • an elastically compressible padding block,
• une coiffe de garnissage dudit bloc, ladite coiffe comprenant au moins un format de revêtement souple pourvu d’un circuit électrique de chauffage destiné à être connecté à un générateur électrique, de manière à former un format chauffant, sachant que ledit circuit : o est à base d’encre conductrice comprenant une matrice en matériau plastique pourvue d’une dispersion de particules conductrices, notamment métalliques, ladite encre étant imprimée en envers dudit format, o comprend deux électrodes, reliées à des bornes de connexion à chacun des pôles dudit générateur, et au moins une bande résistive de largeur L sensiblement constante s’étendant entre lesdites électrodes, ladite bande étant destinée à former une résistance chauffante, ladite matelassure présentant en outre les caractéristiques suivantes : • a cover for lining said block, said cover comprising at least one flexible covering format provided with an electric heating circuit intended to be connected to an electric generator, so as to form a heating format, knowing that said circuit: o is based on conductive ink comprising a matrix of plastic material provided with a dispersion of conductive particles, in particular metallic, said ink being printed on the reverse side of said format, o comprises two electrodes, connected to connection terminals at each of the poles of said generator , and at least one resistive band of substantially constant width L extending between said electrodes, said strip being intended to form a heating resistance, said padding also having the following characteristics:
• ledit format est pourvu d’au moins une couture s’étendant sur ladite bande résistive, ladite couture formant dans ledit format une pluralité de trous de couture séparés l’un de l’autre par un pas de couture P, • said format is provided with at least one seam extending over said resistive strip, said seam forming in said format a plurality of seam holes separated from each other by a stitch pitch P,
• ladite largeur et ledit pas de couture sont reliés entre eux par l’inégalité : • said width and said seam pitch are interconnected by the inequality:
L > 5P sachant que L et P sont exprimés dans la même unité de mesure. L> 5P knowing that L and P are expressed in the same unit of measurement.
Avec l’agencement proposé, le fait de disposer d’une largeur L de bande très supérieure au pas de couture P permet de minimiser de façon très conséquente le risque d’apparition d’un « point chaud ». With the proposed arrangement, the fact of having a band width L much greater than the stitch pitch P makes it possible to very substantially minimize the risk of a "hot spot" appearing.
En envisageant à titre d’exemple une bande résistive de largeur L égale à 20 mm traversée par une couture la traversant dans le sens de ladite largeur - ce qui correspond au cas le plus défavorable - et dont le pas P est de 4 mm, ladite bande est alors pourvue au plus de 5 trous de couture. By considering by way of example a resistive strip of width L equal to 20 mm crossed by a seam passing through it in the direction of said width - which corresponds to the most unfavorable case - and of which the pitch P is 4 mm, said tape is then provided with at most 5 stitching holes.
En cas de dégradation de la bande au niveau d’un des trous, il reste au courant électrique une section de bande suffisante pour lui permettre de passer à côté sans entraîner une surchauffe excessive risquant de mener à une dégradation du format chauffant. If the tape deteriorates at one of the holes, a sufficient section of tape remains in the electrical current to allow it to pass by without causing excessive overheating which could lead to degradation of the heated format.
Le même raisonnement peut être tenu dans le cas beaucoup plus improbable ou deux points de couture dégradent la bande. The same reasoning can be held in the much more unlikely case where two stitches degrade the tape.
Selon d’autres aspects, l’invention propose une coiffe d’une telle matelassure et un siège comprenant une telle matelassure. In other aspects, the invention provides a cap of such padding and a seat comprising such padding.
D’autres particularités et avantages de l’invention apparaîtront dans la description qui suit, faite en référence aux figures jointes, dans lesquelles : [Fig.1 ] est une vue schématique de face d’une matelassure selon un agencement, Other features and advantages of the invention will emerge from the following description, made with reference to the accompanying figures, in which: [Fig.1] is a schematic front view of a padding according to an arrangement,
[Fig.2] est une vue schématique de détail en coupe de la matelassure de la figure 1 selon un mode de réalisation du format chauffant. [Fig.2] is a detailed schematic sectional view of the padding of Figure 1 according to one embodiment of the heated format.
En référence aux figures, on décrit une matelassure 1 pour siège de véhicule automobile, ladite matelassure comprenant successivement : With reference to the figures, a padding 1 for a motor vehicle seat is described, said padding comprising successively:
• un bloc 2 de rembourrage élastiquement compressible, • a block 2 of elastically compressible padding,
• une coiffe 3 de garnissage dudit bloc, ladite coiffe comprenant au moins un format 4 de revêtement souple pourvu d’un circuit électrique 5 de chauffage destiné à être connecté à un générateur électrique, de manière à former un format chauffant, sachant que ledit circuit : o est à base d’encre conductrice comprenant une matrice en matériau plastique pourvue d’une dispersion de particules conductrices, ladite encre étant imprimée - notamment par sérigraphie - en envers dudit format, o comprend deux électrodes 6, reliées à des bornes de connexion 7 à chacun des pôles dudit générateur, et au moins une bande résistive 8 - en l’occurrence une pluralité selon l’agencement de la figure 1 - de largeur L sensiblement constante s’étendant entre lesdites électrodes, ladite bande étant destinée à former une résistance chauffante, ladite matelassure présentant en outre les caractéristiques suivantes : • a cover 3 for lining said block, said cover comprising at least one flexible covering format 4 provided with an electric heating circuit 5 intended to be connected to an electric generator, so as to form a heating format, knowing that said circuit : o is based on conductive ink comprising a matrix of plastic material provided with a dispersion of conductive particles, said ink being printed - in particular by screen printing - on the reverse side of said format, o comprises two electrodes 6, connected to connection terminals 7 at each of the poles of said generator, and at least one resistive strip 8 - in this case a plurality according to the arrangement of FIG. 1 - of substantially constant width L extending between said electrodes, said strip being intended to form a heating resistor, said padding also having the following characteristics:
• ledit format est pourvu d’au moins une couture 9 s’étendant sur ladite bande résistive, ladite couture formant dans ledit format une pluralité de trous 10 de couture séparés l’un de l’autre par un pas de couture P, par exemple compris entre 3 et 5 mm, • said format is provided with at least one seam 9 extending over said resistive strip, said seam forming in said format a plurality of seam holes 10 separated from each other by a seam pitch P, for example between 3 and 5 mm,
• ladite largeur et ledit pas de couture sont reliés entre eux par l’inégalité : • said width and said seam pitch are interconnected by the inequality:
L > 5P sachant que L et P sont exprimés dans la même unité de mesure. L> 5P knowing that L and P are expressed in the same unit of measurement.
Selon une première réalisation : • les électrodes 6 sont à base d’une première encre comprenant des particules de basse résistivité, According to a first realization: • the electrodes 6 are based on a first ink comprising particles of low resistivity,
• une bande résistive 8 est à base d’une deuxième encre comprenant des particules de haute résistivité par rapport à celle de ladite première encre. • a resistive strip 8 is based on a second ink comprising particles of high resistivity compared to that of said first ink.
En particulier : In particular :
• les particules de basse résistivité sont à base de métal, par exemple de cuivre, • the low resistivity particles are based on metal, for example copper,
• les particules de haute résistivité sont à base de carbone. • the high resistivity particles are carbon based.
La résistivité de l'encre métallique, par exemple à base de cuivre, est par exemple de l’ordre de 0,5.104 Q.m. The resistivity of the metallic ink, for example based on copper, is for example of the order of 0.5.10 4 Qm
La résistivité de l'encre à base de carbone est par exemple de l’ordre de 30.10-4 Q.m. The resistivity of the carbon-based ink is for example of the order of 30.10 -4 Qm
Selon une deuxième réalisation, le circuit 5 est à base d’une seule encre imprimée en plus forte épaisseur dans les électrodes 6 que dans une bande résistive 8, de manière à permettre de baisser sa résistance électrique dans lesdites électrodes et à l’augmenter dans ladite bande. According to a second embodiment, the circuit 5 is based on a single ink printed in greater thickness in the electrodes 6 than in a resistive strip 8, so as to make it possible to lower its electrical resistance in said electrodes and to increase it in said strip.
On peut notamment prévoir, pour toutes les réalisations, une épaisseur d’encre comprise entre 0,05 et 0,5 mm. In particular, for all embodiments, an ink thickness of between 0.05 and 0.5 mm can be provided.
On peut prévoir que la matrice d’une encre soit notamment à base de polyuréthanne. Provision can be made for the matrix of an ink to be in particular based on polyurethane.
Selon l’agencement présenté en figure 1 , une bande résistive 8 présente une forme générale de rectangle. According to the arrangement shown in Figure 1, a resistive strip 8 has the general shape of a rectangle.
Selon le mode de réalisation représentée en figure 2, le format 4 chauffant est sous forme de complexe comprenant associées successivement l’une à l’autre : • une couche externe 11 de revêtement, par exemple à base de cuir ou de textile, According to the embodiment shown in FIG. 2, the heating format 4 is in the form of a complex comprising successively associated with one another: • an outer coating layer 11, for example based on leather or textile,
• une couche médiane 12 en mousse, • a middle layer 12 of foam,
• une couche d’envers 13 en maille sur laquelle est imprimé le circuit électrique 5. • a mesh back layer 13 on which the electrical circuit 5 is printed.
L’utilisation d’une telle maille permet de concilier le confort tactile - du fait de son élasticité - et le confort hygrothermique - du fait de sa porosité - de la matelassure 1. The use of such a mesh makes it possible to reconcile the tactile comfort - due to its elasticity - and the hygrothermal comfort - due to its porosity - of the padding 1.
Selon une réalisation non représentée, le format chauffant 4 est associé bord à bord- par exemple par couture ou soudure - à au moins un autre format non pourvu d’un circuit électrique. According to an embodiment not shown, the heating format 4 is associated edge to edge - for example by stitching or welding - with at least one other format not provided with an electrical circuit.
Selon une réalisation, la coiffe 3 est chaussée sur le bloc 2 de rembourrage. According to one embodiment, the cap 3 is fitted on the padding block 2.
Selon une autre réalisation, la coiffe 3 est surmoulée, au moins en partie, par le bloc 2 de rembourrage, ledit bloc étant à base de mousse moulée. According to another embodiment, the cap 3 is overmolded, at least in part, by the padding block 2, said block being based on molded foam.
On décrit à présent une coiffe 3 d’une telle matelassure 1 , ladite coiffe comprenant au moins un format 4 de revêtement souple pourvu d’un circuit électrique 5 de chauffage destiné à être connecté à un générateur électrique, de manière à former un format chauffant, sachant que ledit circuit : A cover 3 of such a padding 1 is now described, said cover comprising at least one flexible covering format 4 provided with an electric heating circuit 5 intended to be connected to an electric generator, so as to form a heating format. , knowing that said circuit:
• est à base d’encre conductrice comprenant une matrice en matériau plastique pourvue d’une dispersion de particules conductrices, ladite encre étant imprimée en envers dudit format, • is based on conductive ink comprising a plastic matrix provided with a dispersion of conductive particles, said ink being printed on the reverse side of said format,
• comprend deux électrodes 6, reliées à des bornes de connexion 7 à chacun des pôles dudit générateur, et au moins une bande résistive 8 de largeur L sensiblement constante s’étendant entre lesdites électrodes, ladite bande étant destinée à former une résistance chauffante, ladite coiffe présentant en outre les caractéristiques suivantes : • ledit format est pourvu d’au moins une couture 9 s’étendant sur ladite bande résistive, ladite couture formant dans ledit format une pluralité de trous 10 de couture séparés l’un de l’autre par un pas de couture P,• comprises two electrodes 6, connected to connection terminals 7 at each of the poles of said generator, and at least one resistive strip 8 of substantially constant width L extending between said electrodes, said strip being intended to form a heating resistor, said cap further having the following characteristics: • said format is provided with at least one seam 9 extending over said resistive strip, said seam forming in said format a plurality of seam holes 10 separated from each other by a seam pitch P,
• ladite largeur et ledit pas de couture sont reliés entre eux par l’inégalité : L > 5P sachant que L et P sont exprimés dans la même unité de mesure. • said width and said seam pitch are interconnected by the inequality: L> 5P knowing that L and P are expressed in the same unit of measurement.
On décrit enfin, de façon non représentée, un siège de véhicule automobile comprenant une armature et une telle matelassure 1 , ladite matelassure étant montée en recouvrement de ladite armature. Finally, in a manner not shown, a motor vehicle seat comprising a frame and such a padding 1 is described, said padding being mounted to cover said frame.

Claims

REVENDICATIONS
1. Matelassure (1) pour siège de véhicule automobile, ladite matelassure comprenant successivement : 1. Padding (1) for a motor vehicle seat, said padding comprising successively:
• un bloc (2) de rembourrage élastiquement compressible, • a block (2) of elastically compressible padding,
• une coiffe (3) de garnissage dudit bloc, ladite coiffe comprenant au moins un format (4) de revêtement souple pourvu d’un circuit électrique (5) de chauffage destiné à être connecté à un générateur électrique, de manière à former un format chauffant, sachant que ledit circuit : o est à base d’encre conductrice comprenant une matrice en matériau plastique pourvue d’une dispersion de particules conductrices, ladite encre étant imprimée en envers dudit format, o comprend deux électrodes (6), reliées à des bornes de connexion (7) à chacun des pôles dudit générateur, et au moins une bande résistive (8) de largeur (L) sensiblement constante s’étendant entre lesdites électrodes, ladite bande étant destinée à former une résistance chauffante, ladite matelassure étant caractérisée en ce que : • a cover (3) for lining said block, said cover comprising at least one format (4) of flexible covering provided with an electrical circuit (5) for heating intended to be connected to an electric generator, so as to form a format heating, knowing that said circuit: o is based on conductive ink comprising a plastic matrix provided with a dispersion of conductive particles, said ink being printed on the reverse side of said format, o comprises two electrodes (6), connected to connection terminals (7) to each of the poles of said generator, and at least one resistive strip (8) of substantially constant width (L) extending between said electrodes, said strip being intended to form a heating resistor, said padding being characterized in that :
• ledit format est pourvu d’au moins une couture (9) s’étendant sur ladite bande résistive, ladite couture formant dans ledit format une pluralité de trous (10) de couture séparés l’un de l’autre par un pas de couture (P),• said format is provided with at least one seam (9) extending over said resistive strip, said seam forming in said format a plurality of seam holes (10) separated from each other by a seam pitch (P),
• ladite largeur et ledit pas de couture sont reliés entre eux par l’inégalité : • said width and said seam pitch are interconnected by the inequality:
L > 5P sachant que L et P sont exprimés dans la même unité de mesure. L> 5P knowing that L and P are expressed in the same unit of measurement.
2. Matelassure selon la revendication 1 , caractérisée en ce que : 2. Padding according to claim 1, characterized in that:
• les électrodes (6) sont à base d’une première encre comprenant des particules de basse résistivité, • the electrodes (6) are based on a first ink comprising particles of low resistivity,
• une bande résistive (8) est à base d’une deuxième encre comprenant des particules de haute résistivité par rapport à celle de ladite première encre. • a resistive strip (8) is based on a second ink comprising particles of high resistivity compared to that of said first ink.
3. Matelassure selon la revendication 2, caractérisée en ce que : 3. Padding according to claim 2, characterized in that:
• les particules de basse résistivité sont à base de métal, • low resistivity particles are metal based,
• les particules de haute résistivité sont à base de carbone. • the high resistivity particles are carbon based.
4. Matelassure selon l’u revendication 1 , caractérisée en ce que le circuit (5) est à base d’une seule encre imprimée en plus forte épaisseur dans les électrodes (6) que dans une bande résistive (8). 4. Padding according to claim 1, characterized in that the circuit (5) is based on a single ink printed in greater thickness in the electrodes (6) than in a resistive strip (8).
5. Matelassure selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la matrice d’une encre est à base de polyuréthanne. 5. Padding according to any one of claims 1 to 4, characterized in that the matrix of an ink is based on polyurethane.
6. Matelassure selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu’une bande résistive (8) présente une forme générale de rectangle. 6. Padding according to any one of claims 1 to 5, characterized in that a resistive strip (8) has the general shape of a rectangle.
7. Matelassure selon l'une quelconque des revendications 1 à 6, caractérisée en ce que le format (4) chauffant est sous forme de complexe comprenant associées successivement l’une à l’autre : 7. Padding according to any one of claims 1 to 6, characterized in that the heating format (4) is in the form of a complex comprising successively associated with one another:
• une couche externe (11 ) de revêtement, • an outer layer (11) of coating,
• une couche médiane (12) en mousse, • a middle layer (12) of foam,
• une couche d’envers (13) en maille sur laquelle est imprimé le circuit électrique (5). • a mesh back layer (13) on which the electrical circuit (5) is printed.
8. Coiffe (3) d’une matelassure selon l'une quelconque des revendications précédentes, ladite coiffe comprenant au moins un format (4) de revêtement souple pourvu d’un circuit électrique (5) de chauffage destiné à être connecté à un générateur électrique, de manière à former un format chauffant, sachant que ledit circuit : 8. Cap (3) of a padding according to any one of the preceding claims, said cap comprising at least one format (4) of flexible covering provided with an electrical circuit (5) for heating intended to be connected to a generator. electric, so as to form a heating format, knowing that said circuit:
• est à base d’encre conductrice comprenant une matrice en matériau plastique pourvue d’une dispersion de particules conductrices, ladite encre étant imprimée en envers dudit format, • is based on conductive ink comprising a plastic matrix provided with a dispersion of conductive particles, said ink being printed on the reverse side of said format,
• comprend deux électrodes (6), reliées à des bornes de connexion (7) à chacun des pôles dudit générateur, et au moins une bande résistive (8) de largeur (L) sensiblement constante s’étendant entre lesdites électrodes, ladite bande étant destinée à former une résistance chauffante, ladite coiffe étant caractérisée en ce que : • comprises two electrodes (6), connected to connection terminals (7) at each of the poles of said generator, and at least one resistive strip (8) of substantially constant width (L) extending between said electrodes, said strip being intended to form a heating resistance, said cap being characterized in that:
• ledit format est pourvu d’au moins une couture (9) s’étendant sur ladite bande résistive, ladite couture formant dans ledit format une pluralité de trous (10) de couture séparés l’un de l’autre par un pas de couture (P),• said format is provided with at least one seam (9) extending over said resistive strip, said seam forming in said format a plurality of seam holes (10) separated from each other by a seam pitch (P),
• ladite largeur et ledit pas de couture sont reliés entre eux par l’inégalité : • said width and said seam pitch are interconnected by the inequality:
L > 5P sachant que L et P sont exprimés dans la même unité de mesure. L> 5P knowing that L and P are expressed in the same unit of measurement.
9. Siège de véhicule automobile comprenant une armature et une matelassure (1) selon l'une quelconque des revendications 1 à 7, ladite matelassure étant montée en recouvrement de ladite armature. 9. Motor vehicle seat comprising a frame and a padding (1) according to any one of claims 1 to 7, said padding being mounted to cover said frame.
PCT/EP2020/083916 2019-11-29 2020-11-30 Stuffing for a motor vehicle seat WO2021105503A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20824119.0A EP4065414A1 (en) 2019-11-29 2020-11-30 Stuffing for a motor vehicle seat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FRFR1913498 2019-11-29
FR1913498A FR3103749B1 (en) 2019-11-29 2019-11-29 Padding for motor vehicle seat

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3126670B1 (en) * 2021-09-08 2023-09-01 Tesca France Motor vehicle seat headrest

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8902260U1 (en) * 1989-02-25 1989-05-11 I.G. Bauerhin Gmbh Elektro-Technische Fabrik, 6466 Gruendau, De
US6093910A (en) * 1998-10-30 2000-07-25 Tachi-S Engineering, Usa Inc. Electric seat heater
US20080010815A1 (en) * 2006-07-17 2008-01-17 W.E.T. Automotive Group Ag Heating tape structure
FR3040930A1 (en) * 2015-09-11 2017-03-17 Faurecia Sieges D'automobile "HEATING COMPONENT FOR A VEHICLE SEAT ELEMENT SYSTEM"

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8902260U1 (en) * 1989-02-25 1989-05-11 I.G. Bauerhin Gmbh Elektro-Technische Fabrik, 6466 Gruendau, De
US6093910A (en) * 1998-10-30 2000-07-25 Tachi-S Engineering, Usa Inc. Electric seat heater
US20080010815A1 (en) * 2006-07-17 2008-01-17 W.E.T. Automotive Group Ag Heating tape structure
FR3040930A1 (en) * 2015-09-11 2017-03-17 Faurecia Sieges D'automobile "HEATING COMPONENT FOR A VEHICLE SEAT ELEMENT SYSTEM"

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EP4065414A1 (en) 2022-10-05
FR3103749B1 (en) 2022-11-11

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