EP0100698B1 - Single shell seat with integrated upholstery and padding, and method of manufacturing it - Google Patents

Single shell seat with integrated upholstery and padding, and method of manufacturing it Download PDF

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Publication number
EP0100698B1
EP0100698B1 EP19830401302 EP83401302A EP0100698B1 EP 0100698 B1 EP0100698 B1 EP 0100698B1 EP 19830401302 EP19830401302 EP 19830401302 EP 83401302 A EP83401302 A EP 83401302A EP 0100698 B1 EP0100698 B1 EP 0100698B1
Authority
EP
European Patent Office
Prior art keywords
shell
padding
inserts
seat
mold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19830401302
Other languages
German (de)
French (fr)
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EP0100698A2 (en
EP0100698A3 (en
Inventor
Michel Baille
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
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 Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Publication of EP0100698A2 publication Critical patent/EP0100698A2/en
Publication of EP0100698A3 publication Critical patent/EP0100698A3/en
Application granted granted Critical
Publication of EP0100698B1 publication Critical patent/EP0100698B1/en
Expired legal-status Critical Current

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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
    • A47C7/185—Seat parts having foamed material included in cushioning part with a stiff, rigid support

Definitions

  • the present invention relates to a vehicle seat comprising a shell, a decorative lining, a padding interposed between the shell and the lining, and inserts integral with the shell and used for fixing the seat on the vehicle.
  • the padding is placed on the shell while the lining is placed on the padding and fixed by its edges to the shell. Annoying slips between these elements can occur.
  • the present invention relates to a seat of the above type, characterized in that the lining, the padding and the inserts are an integral part of the shell, a fastening fabric being interposed between the padding and the shell.
  • the present invention also relates to a method of manufacturing this seat.
  • This process is characterized in that the padding is formed by injecting a foam between the lining and the hanging fabric, and in that the shell is formed by extrusion and blowing on the hanging fabric.
  • the formation of the padding can take place before that of the shell.
  • the shell is formed in a mold in which the assembly consisting of the lining, the padding and the hanging fabric has previously been placed.
  • the formation of the padding can also take place after that of the shell.
  • the shell is formed in a mold in which a cap has been placed consisting of the lining and the hanging fabric previously assembled to one another.
  • the inserts can be fixed to the shell by placing these inserts in the bottom of the mold in which the shell is formed. They can also be fixed after formation of the shell by microfusion of the corresponding surfaces of the inserts and of the shell.
  • the seat has a padding 1 made of synthetic foam, for example polyurethane foam, which is interposed between an outer lining 2 and a hanging fabric 3, the assembly being an integral part of a blown shell 4 made for example of copolymer polypropylene or of medium density polyethylene.
  • the upper part 4a of the seat area of the shell has a decreasing thickness from its longitudinal edge towards the center, thus constituting a flexible fabric accompanying the foam 1 in its crushing and playing the role of elastic base.
  • the lower part 4b of this zone has studs 4c which limit the bending of the central portion of this part 4a and limit the sinking of the seat.
  • the shell 4 includes inserts used for fixing the seat to the vehicle and made of the same material as the shell, but reinforced with synthetic fibers. In the embodiment shown, these inserts are constituted by an external half-slide 5 and by a plate 6 which is provided on the internal side of the seat and on which supports 7 are fixed for a central slide 8.
  • the inserts 5 and 6 are an integral part of the shell.
  • the lining 2 and the hanging fabric 3 are made to overflow relative to the padding, as indicated in 2a and 3a.
  • the edges of the fabrics 2 and 3 are bonded beforehand by stitching or by high-frequency welding.
  • the flexible part thus formed is placed in a mold comprising a matrix 11 and a punch 12, while maintaining the edges 2a and 3a of the fabrics in a sidewall clamp 13 (FIG. 6).
  • the exterior profile of the punch 12 corresponds to the exterior profile desired for the exterior face of the shell.
  • the profile of the bottom of the matrix 11 corresponds to the profile that takes the external face of the flexible part when it is compressed under a pressure equal to the injection pressure of the shell, for example five bars, its internal face being fixed. This profile is indicated at 14 in Figure 5.
  • the die 11 and the punch 12 have on their edges cutting blades 11a and 12a respectively.
  • the inserts 5 and 6 are blocked in the mold at the places they must occupy on the shell.
  • the shell 4 is then extruded and blown into the mold 11-12.
  • the foam 1 is compressed by the blown material in the pasty state until the balance between the blowing pressure and the compression of the foam (FIG. 7).
  • the foam 1 On demolding, the blown material being hardened, the foam 1 returns to its initial shape ( Figure 8). The blades 11a and 12a cut the edges of the fabrics 2 and 3 which protruded from the foam. The seat is thus finished and ready to equip a motor vehicle.
  • the inserts 5 and 6 can be placed after the shell has been formed by microfusion of the plastic by the mirror process.
  • the insert is pressed onto the shell with the interposition of a hot wall, which melts the surfaces of the insert and the shell to the wall upright, this wall is removed and the insert is pressed. on the hull.
  • a cap comprising the lining 2 and the attachment fabric 3, the edges of the two fabrics being joined together by stitching and high frequency welding.
  • the shell 4 is formed by extrusion and blowing in a mold similar to the mold 11-12 by placing the cover at the bottom of the mold and holding it by the sidewall clamp 13; the profile of this mold corresponds to that desired by the shell.
  • the inserts 5 and 6 are placed on the shell by microfusion of the plastic by the mirror process. It only remains to inject the synthetic foam 1 between the lining 2 and the attachment fabric 3 in a mold comprising a matrix 15 and a punch 15 (FIG. 9).
  • the profile of the die 15 is that of the external shape desired for the padding 1 while the punch 16 has the shape of the outside face of the shell 4.

Landscapes

  • Seats For Vehicles (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Description

La présente invention a pour objet un siège de véhicule comportant une coque, une garniture décorative, une matelassure interposée entre la coque et la garniture, et des inserts solidaires de la coque et servant à la fixation du siège sur le véhicule.The present invention relates to a vehicle seat comprising a shell, a decorative lining, a padding interposed between the shell and the lining, and inserts integral with the shell and used for fixing the seat on the vehicle.

Dans les sièges de ce genre jusqu'à présent fabriqués, la matelassure est posée sur la coque alors que la garniture est posée sur la matelassure et fixée par ses bords à la coque. Des glissements gênants entre ces éléments peuvent se produire.In seats of this kind hitherto manufactured, the padding is placed on the shell while the lining is placed on the padding and fixed by its edges to the shell. Annoying slips between these elements can occur.

La présente invention a pour objet un siège du type ci-dessus, caractérisée en ce que la garniture, la matelassure et les inserts font partie intégrante de la coque, un tissu d'accrochage étant interposé entre la matelassure et la coque.The present invention relates to a seat of the above type, characterized in that the lining, the padding and the inserts are an integral part of the shell, a fastening fabric being interposed between the padding and the shell.

La présente invention a également pour objet un procédé de fabrication de ce siège.The present invention also relates to a method of manufacturing this seat.

Ce procédé est caractérisé en ce qu'on forme la matelassure par injection d'une mousse entre la garniture et le tissu d'accrochage, et en ce qu'on forme la coque par extrusion et soufflage sur le tissu d'accrochage.This process is characterized in that the padding is formed by injecting a foam between the lining and the hanging fabric, and in that the shell is formed by extrusion and blowing on the hanging fabric.

La formation de la matelassure peut avoir lieu avant celle de la coque. Dans ce cas, on forme la coque dans un moule dans lequel on a préalablement placé l'ensemble constitué par la garniture, la matelassure et le tissu d'accrochage.The formation of the padding can take place before that of the shell. In this case, the shell is formed in a mold in which the assembly consisting of the lining, the padding and the hanging fabric has previously been placed.

La formation de la matelassure peut également avoir lieu après celle de la coque. Dans ce cas, on forme la coque dans un moule dans lequel on a placé une coiffe constituée par la garniture et le tissu d'accrochage préalablement assemblés l'un à l'autre.The formation of the padding can also take place after that of the shell. In this case, the shell is formed in a mold in which a cap has been placed consisting of the lining and the hanging fabric previously assembled to one another.

On peut fixer les inserts à la coque en disposant ces inserts dans le fond du moule dans lequel la coque est formée. On peut également les fixer après formation de la coque par microfusion des surfaces correspondantes des inserts et de la coque.The inserts can be fixed to the shell by placing these inserts in the bottom of the mold in which the shell is formed. They can also be fixed after formation of the shell by microfusion of the corresponding surfaces of the inserts and of the shell.

On a décrit ci-après, à titre d'exemples non limitatifs, un mode de réalisation du siège selon l'invention et des modes de mise en oeuvre du procédé permettant de le réaliser, avec référence aux dessins annexés dans lesquels :

  • La figure 1 est une vue en coupe longitudinale médiane du siège ;
  • La figure 2 en est une demi-coupe transversale suivant II-II de la figure 1 ;
  • La figure 3 en est une demi-coupe transversale suivant III-III de la figure 1 ;
  • La figure 4 est une coupe suivant IV-IV de la figure 3 ;
  • Les figures 5 à 8 sont des vues en coupe transversale montrant diverses étapes du procédé, dans un premier mode de mise en oeuvre ;
  • La figure 9 est une vue en coupe transversale montrant un second mode de mise en oeuvre du procédé.
We have described below, by way of nonlimiting examples, an embodiment of the seat according to the invention and embodiments of the method making it possible to carry it out, with reference to the appended drawings in which:
  • Figure 1 is a longitudinal longitudinal sectional view of the seat;
  • Figure 2 is a half cross section along II-II of Figure 1;
  • Figure 3 is a half cross section along III-III of Figure 1;
  • Figure 4 is a section on IV-IV of Figure 3;
  • Figures 5 to 8 are cross-sectional views showing various stages of the method, in a first embodiment;
  • Figure 9 is a cross-sectional view showing a second embodiment of the method.

Tel qu'il est représenté au dessin, le siège comporte une matelassure 1 en mousse synthétique, par exemple en mousse de polyuréthane, qui est interposée entre une garniture extérieure 2 et un tissu d'accrochage 3, l'ensemble faisant partie intégrante d'une coque soufflée 4 réalisée par exemple en polypropylène copolymère ou en polyéthylène de densité moyenne. La partie supérieure 4a de la zone d'assise de la coque a une épaisseur dégressive depuis son bord longitudinal vers le centre, en constituant ainsi une toile souple accompagnant la mousse 1 dans son écrasement et jouant le rôle de sommier élastique. La partie inférieure 4b de cette zone comporte des plots 4c qui limitent la flexion de la portion centrale de cette partie 4a et limitent l'enfoncement de l'assise. La coque 4 comporte des inserts servant à la fixation du siège sur le véhicule et réalisée en la même matière que la coque, mais renforcés par des fibres synthétiques. Dans l'exemple de réalisation représenté, ces inserts sont constitués par une demi-glissière extérieure 5 et par une plaquette 6 qui est prévue sur le côté intérieur de l'assise et sur laquelle sont fixés des supports 7 pour une glissière centrale 8.As shown in the drawing, the seat has a padding 1 made of synthetic foam, for example polyurethane foam, which is interposed between an outer lining 2 and a hanging fabric 3, the assembly being an integral part of a blown shell 4 made for example of copolymer polypropylene or of medium density polyethylene. The upper part 4a of the seat area of the shell has a decreasing thickness from its longitudinal edge towards the center, thus constituting a flexible fabric accompanying the foam 1 in its crushing and playing the role of elastic base. The lower part 4b of this zone has studs 4c which limit the bending of the central portion of this part 4a and limit the sinking of the seat. The shell 4 includes inserts used for fixing the seat to the vehicle and made of the same material as the shell, but reinforced with synthetic fibers. In the embodiment shown, these inserts are constituted by an external half-slide 5 and by a plate 6 which is provided on the internal side of the seat and on which supports 7 are fixed for a central slide 8.

De même que la garniture extérieure 2 et la matelassure 1, les inserts 5 et 6 font partie intégrante de la coque.Like the outer trim 2 and the padding 1, the inserts 5 and 6 are an integral part of the shell.

A cet effet, on peut commencer par former la partie souple de l'assise et du dossier du siège en injectant la mousse 1 entre la garniture 2 et le tissu d'accrochage 3, dans un moule qui comprend une matrice 9 et un poinçon 10 et dont le profil est celui du profil extérieur désiré pour la matelassure (figure 5).To this end, we can start by forming the flexible part of the seat and the back of the seat by injecting the foam 1 between the lining 2 and the hanging fabric 3, in a mold which comprises a matrix 9 and a punch 10 and whose profile is that of the external profile desired for the padding (Figure 5).

On fait déborder la garniture 2 et le tissu d'accrochage 3 par rapport à la matelassure, comme indiqué en 2a et 3a. La liaison des bords des tissus 2 et 3 est assurée au préalable par- piquage ou par soudage à haute fréquence.The lining 2 and the hanging fabric 3 are made to overflow relative to the padding, as indicated in 2a and 3a. The edges of the fabrics 2 and 3 are bonded beforehand by stitching or by high-frequency welding.

Puis on place la partie souple ainsi formée dans un moule comprenant une matrice 11 et un poinçon 12, en maintenant les bords 2a et 3a des tissus dans un serre-flanc 13 (figure 6). Le profil extérieur du poinçon 12 correspond au profil extérieur désiré pour la face extérieure de la coque. Le profil du fond de la matrice 11 correspond au profil que prend la face extérieure de la partie souple quand on la comprime sous une pression égale à la pression d'injection de la coque, par exemple cinq bars, sa face intérieure étant fixe. Ce profil est indiqué en 14 à la figure 5. La matrice 11 et le poinçon 12 comportent sur leurs bords des lames de coupe respectivement 11a et 12a. On bloque les inserts 5 et 6 dans le moule aux endroits qu'ils doivent occuper sur la coque.Then the flexible part thus formed is placed in a mold comprising a matrix 11 and a punch 12, while maintaining the edges 2a and 3a of the fabrics in a sidewall clamp 13 (FIG. 6). The exterior profile of the punch 12 corresponds to the exterior profile desired for the exterior face of the shell. The profile of the bottom of the matrix 11 corresponds to the profile that takes the external face of the flexible part when it is compressed under a pressure equal to the injection pressure of the shell, for example five bars, its internal face being fixed. This profile is indicated at 14 in Figure 5. The die 11 and the punch 12 have on their edges cutting blades 11a and 12a respectively. The inserts 5 and 6 are blocked in the mold at the places they must occupy on the shell.

On procède alors à l'extrusion et au soufflage de la coque 4 dans le moule 11-12. La mousse 1 est comprimée par la matière soufflée à l'état pâteux jusqu'à l'équilibre entre la pression de soufflage et la compression de la mousse (figure 7).The shell 4 is then extruded and blown into the mold 11-12. The foam 1 is compressed by the blown material in the pasty state until the balance between the blowing pressure and the compression of the foam (FIG. 7).

Au démoulage, la matière soufflée étant durcie, la mousse 1 reprend sa forme initiale (figure 8). Les lames 11 a et 12a ont coupé les bords des tissus 2 et 3 qui faisaient saillie par rapport à la mousse. Le siège est ainsi terminé et prêt à équiper un véhicule automobile.On demolding, the blown material being hardened, the foam 1 returns to its initial shape (Figure 8). The blades 11a and 12a cut the edges of the fabrics 2 and 3 which protruded from the foam. The seat is thus finished and ready to equip a motor vehicle.

En variante, on peut poser les inserts 5 et 6 après formation de la coque par microfusion de la matière plastique par le procédé au miroir. A cet effet, on presse l'insert sur la coque avec interposition d'une paroi chaude, ce qui fait fondre les surfaces de l'insert et de la coque au montant de la paroi, on retire cette paroi et on presse l'insert sur la coque.Alternatively, the inserts 5 and 6 can be placed after the shell has been formed by microfusion of the plastic by the mirror process. For this purpose, the insert is pressed onto the shell with the interposition of a hot wall, which melts the surfaces of the insert and the shell to the wall upright, this wall is removed and the insert is pressed. on the hull.

On peut également former d'abord une coiffe comprenant le garnissage 2 et le tissu d'accrochage 3, les bords des deux tissus étant réunis par piquage et soudage à haute fréquence. Puis on forme la coque 4 par extrusion et soufflage dans un moule analogue au moule 11-12 en plaçant la coiffe au fond du moule et en la maintenant par le serre-flanc 13 ; le profil de ce moule correspond à celui désiré par la coque. On pose les inserts 5 et 6 sur la coque par microfusion de la matière plastique par le procédé au miroir. Il ne reste plus qu'à injecter la mousse synthétique 1 entre la garniture 2 et le tissu d'accrochage 3 dans un moule comprenant une matrice 15 et un poinçon 15 (figure 9). Le profil de la matrice 15 est celui de la forme extérieure désirée pour la matelassure 1 alors que le poinçon 16 a la forme de la face extérieure de la coque 4.It is also possible to first form a cap comprising the lining 2 and the attachment fabric 3, the edges of the two fabrics being joined together by stitching and high frequency welding. Then the shell 4 is formed by extrusion and blowing in a mold similar to the mold 11-12 by placing the cover at the bottom of the mold and holding it by the sidewall clamp 13; the profile of this mold corresponds to that desired by the shell. The inserts 5 and 6 are placed on the shell by microfusion of the plastic by the mirror process. It only remains to inject the synthetic foam 1 between the lining 2 and the attachment fabric 3 in a mold comprising a matrix 15 and a punch 15 (FIG. 9). The profile of the die 15 is that of the external shape desired for the padding 1 while the punch 16 has the shape of the outside face of the shell 4.

Claims (6)

1. Vehicle seat comprising a shell (4), a decorative trimming (2), padding (1) interposed between the shell and the trimming, and inserts (5) and (6) integral with the shell and serving for fixing the seat to the vehicle, characterized in that the trimming (2), the padding (1) and the inserts (5) and (6) form an integral part of the shell (4), a securing fabric (3) being interposed between the padding and the shell.
2. Process for manufacturing the seat according to claim 1, characterized in that the padding (1) is formed by injecting a foam between the trimming (2) and the securing fabric (3) and in that the shell (4) is formed by extrusion and blowing on the securing fabric (3).
3. Process according to claim 2, characterized in that the padding (1) is formed before the shell (4), this latter being formed in a mold in which has been previously placed the assembly formed by the trimming, the padding and the securing fabric.
4. Process according to claim 2, characterized in that the padding is formed after the shell, this latter being formed in a mold in which has been placed a lining formed by the trimming and the securing fabric previously assembled together.
5. Process according to one of claims 2 to 4, characterized in that the inserts are disposed in the bottom of the mold for forming the shell.
6. Process as claimed in one of claims 2 to 4, characterized in that the inserts are fixed after formation of the shell by micro-melting of the corresponding surfaces on the inserts and of the shell.
EP19830401302 1982-07-06 1983-06-23 Single shell seat with integrated upholstery and padding, and method of manufacturing it Expired EP0100698B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8212149 1982-07-06
FR8212149A FR2529842A1 (en) 1982-07-06 1982-07-06 MONOCOQUE SEAT WITH INTEGRATED TRIM AND MATTRESS AND METHOD FOR MANUFACTURING THE SAME

Publications (3)

Publication Number Publication Date
EP0100698A2 EP0100698A2 (en) 1984-02-15
EP0100698A3 EP0100698A3 (en) 1985-04-10
EP0100698B1 true EP0100698B1 (en) 1987-03-25

Family

ID=9275883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830401302 Expired EP0100698B1 (en) 1982-07-06 1983-06-23 Single shell seat with integrated upholstery and padding, and method of manufacturing it

Country Status (3)

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EP (1) EP0100698B1 (en)
DE (1) DE3370439D1 (en)
FR (1) FR2529842A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3421078A1 (en) * 1983-06-28 1985-02-07 Aisin Seiki K.K., Kariya, Aichi VEHICLE SEAT
IT212716Z2 (en) 1987-10-29 1989-08-28 Stars Spa SEAT STRUCTURE ESPECIALLY FOR MOTOR VEHICLES CONSISTING OF A STRUCTURE OF PLASTIC MATERIAL AND SOFT REPLACEMENT WITH QUICK ASSEMBLY
DE19736839A1 (en) * 1997-08-23 1999-02-25 Volkswagen Ag Deformation structure for occupant protection in vehicles
DE102010036798B4 (en) * 2010-08-02 2022-09-29 Kokinetics Gmbh seat part
DE102022122623A1 (en) * 2022-09-06 2024-03-07 Kristof Hock "Seating device with a seat cushion filled with air"

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB998571A (en) * 1960-11-09 1965-07-14 Parker Knoll Ltd Improvements in or relating to upholstery
FR1496282A (en) * 1966-10-07 1967-09-29 Molded seat and process for its manufacture

Also Published As

Publication number Publication date
EP0100698A2 (en) 1984-02-15
EP0100698A3 (en) 1985-04-10
DE3370439D1 (en) 1987-04-30
FR2529842A1 (en) 1984-01-13
FR2529842B1 (en) 1984-12-21

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