WO2013102743A1 - Frame for the backrest a vehicle seat - Google Patents

Frame for the backrest a vehicle seat Download PDF

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Publication number
WO2013102743A1
WO2013102743A1 PCT/FR2013/050020 FR2013050020W WO2013102743A1 WO 2013102743 A1 WO2013102743 A1 WO 2013102743A1 FR 2013050020 W FR2013050020 W FR 2013050020W WO 2013102743 A1 WO2013102743 A1 WO 2013102743A1
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WO
WIPO (PCT)
Prior art keywords
seat
holding element
backrest
shell
plastic
Prior art date
Application number
PCT/FR2013/050020
Other languages
French (fr)
Inventor
David Bonnot
Original Assignee
Peugeot Citroen Automobiles 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
Priority claimed from FR1250149A external-priority patent/FR2985467B1/en
Priority claimed from FR1250173A external-priority patent/FR2985468B1/en
Application filed by Peugeot Citroen Automobiles Sa filed Critical Peugeot Citroen Automobiles Sa
Publication of WO2013102743A1 publication Critical patent/WO2013102743A1/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
    • B60N2/68—Seat frames
    • B60N2/686—Panel like structures
    • 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
    • B60N2/68—Seat frames

Definitions

  • the present invention relates to a vehicle seat back frame and a seat comprising such a frame.
  • This seat has a rigid and common rigid frame for the backrest and the seat, which implies that the backrest has no means of adjustment relative to the seat.
  • the metal frame is covered by a plastic shell, engaged on the top of the frame, so that a support towards the rear of the hull can cause a forward displacement of the upper part of the hull by rotation. The rotation is made possible by the nature of the material employed having a certain flexibility.
  • the function of this seat is, during a collision of the vehicle followed, is consecutively a projection of the passenger against the back support part. the head restraint portion e is brought forward to minimize the risk of cervical injury to the passenger.
  • the design of this seat does not and is not intended to provide a seat with significant relief while ensuring an ongoing mechanical strength, especially in case of side impact.
  • the object of the present invention is to provide a lightweight seat back having a robustness, ongoing mechanical resistance effectively resistant to shocks and good perceived quality.
  • the subject of the present invention is a vehicle seat back frame comprising a vehicle seat back frame comprising a plastic holding member, a metal frame and a plastic shell. characterized in that the metal structure is sandwiched between the holding member and the shell to ensure good cohesion of the folder while reducing its mass.
  • the holding element reproduces the curved shape of the seat back and at a reduced thickness.
  • the holding element comprises at least six wells for receiving the screwing elements.
  • the wells are integral with the holding element.
  • the holding element comprises relief zones in the form of openings at the level of the headrest and on its upper surface and on its lower surface.
  • the metal structure of the frame is crosslinked, to obtain increased strength and good mechanical strength of the backrest.
  • the metal structure is tubular.
  • the metal structure comprises two parallel tubes with a generally curved and elongate shape and closed on itself at the ends.
  • the ends of the metal structure are rounded in an arc.
  • the metal structure comprises at least six lugs having openings distributed in pairs along the length of the metal structure for the passage of the screw elements.
  • the plastic shell constituting the seat back has on its width a concavity directed towards the inside of the seat and a generally curved shape on its height.
  • the plastic holding element, the metal structure and the plastic shell are fastened together by screwing into inserts fixed in the wells of the holding element, and screws whose threads pass through the wells of the shell.
  • plastic and the holes of the legs 3C and platens of the metal structure for engaging in the inserts fixed in the wells of the holding member.
  • the invention also relates to a seat comprising a backrest frame comprising a plastic holding element, a metal structure and a plastic shell, having the aforementioned characteristics.
  • the invention also relates to a vehicle comprising a seat comprising a reinforcement defined above.
  • FIG. 1 is an exploded perspective view of a seat back comprising the constituent elements of its frame and a view of its trim according to the invention.
  • FIG. 2 to 4 show a side view of the seat, and in particular the different stages of constitution of the folder.
  • FIG. 5 illustrates a left rear view in perspective of the constituent metal structure of the seat back according to the invention.
  • - Figure 6 shows a rear view of the constituent metal structure of the seat back according to the invention.
  • Figure 1 is an exploded perspective view of a seat back 5 comprising the constituent elements 2, 3, 4 of its frame 1 and a view of its lining according to the invention.
  • the armature 1 consists of three elements, namely a plastic holding element 2, a metal structure 3 and a plastic shell 4.
  • the plastic holding element 2 and the plastic shell 4 are shaped to sandwich the metal structure 3 which provides the strength and the mechanical strength of the backrest 5.
  • the holding element 2 reproduces the curved shape of the backrest 5 of the seat and has an optimized reduced current thickness.
  • the holding element 2 comprises at least six wells 7 directed towards the rear of the backrest 5 to receive the screwing elements.
  • these wells 7 integral with the holding element receive threaded inserts.
  • the holding member 2 has lightening zones 8, 9, 10 in the form of openings at the headrest 11 where the opening has the shape of the headrest.
  • the upper surface 12 and the lower surface 13 of the holding element 2 comprise at least three elongated openings parallel to each other.
  • the foam-wrapping liner 20 is bonded along the arrow 21 to the holding member 2.
  • the liner 20 and the holding member 2 have a matching profile so that they fit snugly over each other. .
  • the metal structure 3 is tubular.
  • the metal structure 3 comprises at least one cross member 15 secured to the tubes 3a, 3b at the top of the backrest 5.
  • a metal tube bent at its end connects it to the crossmember 15 in the middle to extend to the base 17a of the Bottom end 17.
  • the tube 16 is projecting relative to the tube 3a, 3b of the metal structure 3.
  • spacers 16a connect the tube 16 to the tubes 3a, 3b.
  • Pierced lugs 3C are arranged in the upper part of the structure 3 projecting radially on the tubes 3a, 3b, while in the middle and lower part of the plates 3d, 3e pierces are connected to the tubes 3a, 3b, 16 and the spacers 16a.
  • the holes are in correspondences with the wells 7 of the holding element 2 whose lower end terminates at the cross member 16b of the structure 3.
  • the lower end of the structure 3 comprises a yoke 18 to allow to fix a means of maneuver the inclination of the backrest 5.
  • Joints 19 are provided at the bottom rail 16b.
  • the plastic shell 4 constituting the back of the seat back 5 has on its width a concavity 30 directed towards the inside of the seat and has a generally curved shape on its height.
  • This concavity 30 is intended to cap the reinforcing tube 16.
  • the shell 4 is advantageously reinforced by a reinforcement in half shells, of concave shape 32 interrupted in the middle for the passage of the projecting tube 16.
  • the shell 4 comprises at least six wells 31 directed towards the inside of the seat, made of material for receiving the screwing elements.
  • the wells 7, the holding element 2, the holes of the legs 3C and the plates 3d, 3e and the wells 31 of the plastic shell 4 are in correspondence so as to sandwich the metal structure 3 between the element of FIG.
  • the wells 7 and 31 are sized to obtain a perfect fit of the three elements 2, 3, 4 constituting the frame 1 thus achieving a remarkable perceived quality.
  • the assembly is carried out by inserting screws in the wells 31 of the shell 4 which pass through the bores of the metal structure 3 and which engage in the inserts of the wells 7 of the holding element 2.
  • FIG. 2 shows the constitution of the seat 36 comprising a metal profile support 37, a plastic covering element 38 and a metal structure 39 assembled together to ensure the cohesion and the mechanical strength of the seat 36.
  • the view also shows the metal structure 3 which provides the strength and mechanical strength of the backrest 5, described in support of Figure 1 and mounted on the seat 36.
  • the joints 19 ensuring the connection with the seat 36, allowing the pivoting or tilting of the backrest 5.
  • the lower end 17 of the metal structure 3 folded slightly towards the rear of the tubes 3a, 3b of the backrest 5, allows the attachment of the rod of a jack in the clevis 18 secured to the structure 3.
  • FIG. 3 shows the seat 35 comprising a seat 36 equipped with its lining 40 conventionally covering a foam assembled on the seat 36.
  • the metal structure 3 of the backrest 5 is covered by the holding element 2 on which the Foam wrapped with the liner 20 is preferably fixed by gluing.
  • the wells 7 of the holding member 2 have a depth which is flush with the longitudinal axis of the tubes 3a, 3b.
  • FIG. 4 shows the seat 35 comprising a seat 36 on which the backrest 5 is mounted completely equipped by the plastic holding element 2, on which the foam wrapped by the lining 20 is fixed, the metallic structure 3 (not visible). and a shell 4 made of plastic constituting the backrest 5 of the seat 35.
  • the assembly is achieved by inserting screws into the wells 31 of the shell 4 to provide a remarkable perceived quality.
  • FIG. 5 illustrates a left rear view in perspective of the metallic structure constituting the backrest 5 of the seat according to the invention.
  • This view more specifically illustrates the tube 16 which has a stiffener function. Its upper end 16c is bent to be fixed in the middle, on the crosspiece 15 connecting the two tubes 3a, 3b, and representing the top of the folder, the upper part representing the envelope of the headrest.
  • the tube 16 extends between and at a distance from the tubes 3a, 3b in profile view, regularly and curved 14a following the gable 14 of the tubes 3a, 3b to connect integrally with the base 17a of the tubular lower end 17 of structure 3.
  • the tubular lower end 17 has been bent towards the back of the backrest from the joint 19 which represents the bottom of the folder, so as to ensure a regular distance from the tube 16 relative to the tube 3a, 3b and to provide the anchoring means for fixing the folder on the seat.
  • a cross member 16b is present at the joints 19, secured to the tubes 3a, 3b.
  • This crossbar 19 is bent at its ends so as to deport backward backrest and ensure in its middle part, its attachment to the tube 16.
  • a set of spacers 16a connects two by two on the height of the backrest between the crosspieces 15 and 16b, the tube 16 to the tubes 3a, 3b forming a crosslinked framework.
  • the metal structure 3 is crosslinked.
  • This crosslinked structure 3 has a remarkable lightness through the use of tubular elements and high strength in all possible shock configurations.
  • FIG. 6 shows a rear view of the constituent metal structure 3 of the backrest 5 of the seat according to the invention on which the pierced lugs 3C are arranged in the upper part of the structure 3 projecting radially on the tubes 3a, 3b, while that in the middle and lower part, 3f membranes connect the drilled legs 3d, 3e to the tubes 3a, 3b, 16 and the spacers 16a.
  • the membranes 3f and the tabs 3c, 3d, 3e do not participate in the mechanical strength of the metal structure 3.
  • the holes simply allow the passage of the rods which ensures the maintenance and centering of the structure 3 between the holding element 2 of plastic, and the shell 4 plastic to create the frame of the folder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Seats For Vehicles (AREA)

Abstract

The invention relates to a frame (1) for the backrest (5) of a vehicle seat, comprising a plastic retaining element (2), a metal structure and a plastic shell (4). The frame is characterised in that the metal structure (3) is sandwiched between the retaining element (2) and the shell (4), guaranteeing the cohesion of the backrest (5) while reducing the weight thereof. The invention finds an application in the field of motor vehicles.

Description

ARMATURE DE DOSSIER DE SIEGE DE VEHICULE  VEHICLE SEAT BACK FOLDER REINFORCEMENT
La présente invention concerne une armature de dossier de siège de véhicule et un siège comprenant une telle armature. The present invention relates to a vehicle seat back frame and a seat comprising such a frame.
En vue d'améliorer les performances des véhicules automobiles c'est-à-dire consommations, masse, pollution, puissance, confort, des études sont conduites visant à améliorer les véhicules dans leur ensemble. Notamment dans l'habitacle où les sièges sont soumis à des contraintes toujours plus exigeante telles que sécurité, ergonomie, design, confort, masse, prix. Par conséquent, réduire la masse des éléments constituants un véhicule est un souci constant des constructeurs. Il a été constaté que dans les véhicules actuels, les sièges sont souvent surdimens ionné s entraînant un surpoids inutile et coûteux. Dans l'état de la technique, nous connaissons le document FR297775 qui propose un siège comprenant un cadre métallique, une pièce d'appui monobloc à base de matière plastique moulée pour garnir le dossier et un plateau de réception d'un coussin d'assise pour garnir le cadre métallique de l'assise. Ce siège comporte une armature rigide commune et rigide pour le dossier et l'assise, ce qui implique que le dossier ne possède pas de moyens de réglage par rapport à l'assise. L'armature métallique est recouverte par une coque plastique, en prise sur le haut de l'armature, de sorte qu'un appui vers l'arrière de la coque peut engendrer un déplacement vers l'avant de la partie supérieure de la coque par rotation. La rotation est rendue possible grâce à la nature du matériau employé présentant une certaine flexibilité. Le fonction de ce siège est de, lors d'une collision du véhicule suivi, est consécutivement d'une projection du passager contre la partie d'appui dos. la partie d ' appuie-têt e est ramenée vers l'avant afin de permettre de minimiser le risque de blessures cervicales pour le passager. La conception de ce siège ne permet et n'a pas pour objet de proposer un siège présentant un allégement important tout en garantissant une tenue mécanique irréprochable, notamment en cas de choc latéral . Le but de la présente invention est de proposer un dossier de siège allégé ayant une robustesse, une tenue mécanique irréprochable résistant efficacement aux chocs et une bonne qualité perçue. In order to improve the performance of motor vehicles that is to say consumption, mass, pollution, power, comfort, studies are conducted to improve the vehicles as a whole. Especially in the cockpit where the seats are subject to ever more demanding constraints such as safety, ergonomics, design, comfort, mass, price. Therefore, reducing the mass of the constituent elements of a vehicle is a constant concern of the manufacturers. It has been found that in today's vehicles, the seats are often overdined, resulting in unnecessary and expensive overweight. In the state of the art, we know the document FR297775 which proposes a seat comprising a metal frame, a piece of support integrally molded plastic to garnish the backrest and a receiving tray of a seat cushion to fill the metal frame of the seat. This seat has a rigid and common rigid frame for the backrest and the seat, which implies that the backrest has no means of adjustment relative to the seat. The metal frame is covered by a plastic shell, engaged on the top of the frame, so that a support towards the rear of the hull can cause a forward displacement of the upper part of the hull by rotation. The rotation is made possible by the nature of the material employed having a certain flexibility. The function of this seat is, during a collision of the vehicle followed, is consecutively a projection of the passenger against the back support part. the head restraint portion e is brought forward to minimize the risk of cervical injury to the passenger. The design of this seat does not and is not intended to provide a seat with significant relief while ensuring an impeccable mechanical strength, especially in case of side impact. The object of the present invention is to provide a lightweight seat back having a robustness, impeccable mechanical resistance effectively resistant to shocks and good perceived quality.
A cet effet, la présente invention a pour objet une armature de dossier de siège de véhicule comprenant une armature de dossier de siège de véhicule comprenant un élément de maintien en plastique, une structure métallique et une coque en plastique caractérisé en ce que la structure métallique est prise en sandwich entre l'élément de maintien et la coque permettant d'assurer une bonne cohésion du dossier tout en réduisant sa masse . For this purpose, the subject of the present invention is a vehicle seat back frame comprising a vehicle seat back frame comprising a plastic holding member, a metal frame and a plastic shell. characterized in that the metal structure is sandwiched between the holding member and the shell to ensure good cohesion of the folder while reducing its mass.
Selon une autre caractéristique, l'élément de maintien reproduit la forme galbée du dossier du siège et à une épaisseur réduite. According to another characteristic, the holding element reproduces the curved shape of the seat back and at a reduced thickness.
Selon une autre caractéristique avantageuse, l'élément de maintien comporte au moins six puits pour recevoir les éléments de vissage. According to another advantageous characteristic, the holding element comprises at least six wells for receiving the screwing elements.
Avantageusement, les puits sont venus de matière avec l'élément de maintien. Advantageously, the wells are integral with the holding element.
Selon une variante, l'élément de maintien comporte des zones d'allégement sous forme d'ouvertures au niveau de l'appuie-tête et sur sa surface supérieure et sur sa surface inférieure . According to one variant, the holding element comprises relief zones in the form of openings at the level of the headrest and on its upper surface and on its lower surface.
Selon une autre variante, la structure métallique de l'armature est réticulée, permettant d'obtenir une résistance accrue et une bonne tenue mécanique du dossier. According to another variant, the metal structure of the frame is crosslinked, to obtain increased strength and good mechanical strength of the backrest.
Avantageusement , la structure métallique est tubulaire . Selon une caractéristique, la structure métallique comprend deux tubes parallèles avec une forme générale galbée et allongée et fermée sur elle-même aux extrémités . Advantageously, the metal structure is tubular. According to one feature, the metal structure comprises two parallel tubes with a generally curved and elongate shape and closed on itself at the ends.
Avantageusement, les extrémités de la structure métallique sont arrondies en arc de cercle . Advantageously, the ends of the metal structure are rounded in an arc.
Selon une variante, la structure métallique comporte au moins six pattes comportant des ouvertures réparties deux à deux sur la longueur de la structure métallique pour le passage des éléments de vissage . According to a variant, the metal structure comprises at least six lugs having openings distributed in pairs along the length of the metal structure for the passage of the screw elements.
Selon une caractéristique avantageuse, la coque en plastique constituant le dossier du siège, possède sur sa largeur une concavité dirigée vers l'intérieur du siège et à une forme générale galbée sur sa hauteur. According to an advantageous characteristic, the plastic shell constituting the seat back, has on its width a concavity directed towards the inside of the seat and a generally curved shape on its height.
Avantageusement, l'élément de maintien en plastique, la structure métallique et la coque en plastique sont fixés ensemble par vissage dans des inserts fixés dans les puits de l'élément de maintien, et des vis dont le filetage traversent les puits de la coque en plastique et les perçages des pattes 3C et des platines de la structure métalliques pour venir en prise dans les inserts fixés dans les puits de l'élément de maintien. Advantageously, the plastic holding element, the metal structure and the plastic shell are fastened together by screwing into inserts fixed in the wells of the holding element, and screws whose threads pass through the wells of the shell. plastic and the holes of the legs 3C and platens of the metal structure for engaging in the inserts fixed in the wells of the holding member.
L'invention concerne également un siège comprenant une armature de dossier comprenant un élément de maintien en plastique, une structure métallique et une coque en plastique, ayant les caractéristiques susmentionnées. The invention also relates to a seat comprising a backrest frame comprising a plastic holding element, a metal structure and a plastic shell, having the aforementioned characteristics.
L'invention concerne également un véhicule comprenant un siège comportant une armature défini ci-dessus. D'autres caractéristiques et avantages de 1 ' invention apparaîtront clairement à la lecture de la description ci-après, donnée à titre indicatif en référence aux dessins annexés dans lesquels: The invention also relates to a vehicle comprising a seat comprising a reinforcement defined above. Other characteristics and advantages of the invention will become clear from reading the description below, given for information only with reference to the accompanying drawings, in which:
- La figure 1 est une vue éclatée en perspective d'un dossier de siège comprenant les éléments constitutifs de son armature et une vue de sa garniture suivant l'invention.  - Figure 1 is an exploded perspective view of a seat back comprising the constituent elements of its frame and a view of its trim according to the invention.
- Les figures 2 à 4 montrent une vue de profil du siège, et en particulier les différentes étapes de constitution du dossier .  - Figures 2 to 4 show a side view of the seat, and in particular the different stages of constitution of the folder.
- La figure 5 illustre une vue arrière gauche en perspective de la structure métallique constitutive du dossier du siège selon l'invention. - La figure 6 montre une vue arrière de la structure métallique constitutive du dossier du siège selon l'invention. La figure 1 est une vue éclatée en perspective d'un dossier 5 de siège comprenant les éléments constitutifs 2, 3, 4 de son armature 1 et une vue de sa garniture suivant l'invention. L'armature 1 est constitué de trois éléments soit un élément de maintien 2 en plastique, une structure 3 métallique et une coque 4 en plastique. L'élément de maintien 2 en plastique, ainsi que la coque 4 en plastique sont conformés pour prendre en sandwich la structure 3 métallique qui assure la résistance et la tenue mécanique du dossier 5. L'élément de maintien 2 reproduit la forme galbée du dossier 5 du siège et a une épaisseur courante réduite optimisée. L'élément de maintien 2 comporte au moins six puits 7 dirigés vers l'arrière du dossier 5 pour recevoir les éléments de vissage. En particulier, ces puits 7 venus de matière avec l'élément de maintien reçoivent des inserts filetés. De plus, l'élément de maintien 2 comporte des zones d'allégement 8, 9, 10 sous forme d'ouvertures au niveau de l'appuie-tête 11 où l'ouverture a la forme de l'appuie-tête. La surface supérieure 12 et la surface inférieure 13 de l'élément de maintien 2 comportent au moins trois ouvertures allongées et parallèles entre elles. Pour constituer le dossier 5 du siège, la garniture 20 enveloppant la mousse est collée suivant la flèche 21 sur l'élément de maintien 2. La garniture 20 et l'élément de maintien 2 possèdent un profil en correspondance de façon qu'ils s'adaptent parfaitement l'un sur l'autre. La structure 3 métallique est tubulaire . Elle comprend essentiellement deux tubes parallèles 3a, 3b espacés d'une largeur inférieure à la largeur du dossier 5 avec une forme générale galbée et allongée et fermée sur elle-même aux deux extrémités 3c, 3d. Les extrémités de la structure 3 métallique constituées par les deux tubes parallèles sont arrondies en arc de cercle. De plus, l'extrémité inférieure 17 est repliée légèrement vers l'arrière du dossier 5 créant de fait un décalage avec les tubes 3a, 3b. La structure 3 métallique comporte au moins une traverse 15 solidaires des tubes 3a, 3b en haut du dossier 5. Un tube 16 métallique courbé à son extrémité le relie à la traverse 15 en son milieu pour se prolonger jusqu'à la base 17a de l'extrémité inférieure 17. De profil, le tube 16 se trouve en saillie par rapport au tube 3a, 3b de la structure 3 métallique. Plusieurs entretoises 16a relient le tube 16 aux tubes 3a, 3b. Des pattes percées 3C sont disposées dans la partie supérieure de la structure 3 en saillie radiale sur les tubes 3a, 3b, tandis que dans la partie médiane et inférieure des platines 3d, 3e percées sont reliés aux tubes 3a, 3b, 16 et aux entretoises 16a. Les perçages sont en correspondances avec les puits 7 de l'élément de maintien 2 dont l'extrémité inférieure se termine au niveau de la traverse 16b de la structure 3. L'extrémité inférieure de la structure 3 comporte une chape 18 pour permettre de fixer un moyen de manœuvre de l'inclinaison du dossier 5. Des articulations 19 sont prévues au niveau de la traverse inférieure 16b. Enfin, la coque 4 en plastique constituant l'arrière du dossier 5 du siège, possède sur sa largeur une concavité 30 dirigée vers l'intérieur du siège et a une forme générale galbée sur sa hauteur. Cette concavité 30 a pour objet de coiffer le tube de renfort 16. La coque 4 est avantageusement renforcée par un renforcement en demi coquilles, de forme concave 32 interrompus au milieu pour le passage du tube en saillie 16. En outre, la coque 4 comporte au moins six puits 31 dirigés vers l'intérieur du siège, venus de matière pour recevoir les éléments de vissage. Les puits 7, l'élément de maintien 2, les perçages des pattes 3C et des platines 3d, 3e et les puits 31 de la coque 4 en plastique sont en correspondance de manière à prendre en sandwich la structure 3 métallique entre l'élément de maintien 2 et la coque 4 suivant les flèches 33 et 34. De plus, les puits 7 et 31 sont dimensionnés de manière à obtenir un ajustement parfait des trois éléments 2, 3, 4 constituant l'armature 1 réalisant ainsi une qualité perçue remarquable. L'assemblage est réalisé en insérant des vis dans les puits 31 de la coque 4 qui traversent les perçages de la structure 3 métallique et qui viennent en prise dans les inserts des puits 7 de l'élément de maintien 2. - Figure 5 illustrates a left rear view in perspective of the constituent metal structure of the seat back according to the invention. - Figure 6 shows a rear view of the constituent metal structure of the seat back according to the invention. Figure 1 is an exploded perspective view of a seat back 5 comprising the constituent elements 2, 3, 4 of its frame 1 and a view of its lining according to the invention. The armature 1 consists of three elements, namely a plastic holding element 2, a metal structure 3 and a plastic shell 4. The plastic holding element 2 and the plastic shell 4 are shaped to sandwich the metal structure 3 which provides the strength and the mechanical strength of the backrest 5. The holding element 2 reproduces the curved shape of the backrest 5 of the seat and has an optimized reduced current thickness. The holding element 2 comprises at least six wells 7 directed towards the rear of the backrest 5 to receive the screwing elements. In particular, these wells 7 integral with the holding element receive threaded inserts. In addition, the holding member 2 has lightening zones 8, 9, 10 in the form of openings at the headrest 11 where the opening has the shape of the headrest. The upper surface 12 and the lower surface 13 of the holding element 2 comprise at least three elongated openings parallel to each other. To constitute the file 5 of the seat, the The foam-wrapping liner 20 is bonded along the arrow 21 to the holding member 2. The liner 20 and the holding member 2 have a matching profile so that they fit snugly over each other. . The metal structure 3 is tubular. It essentially comprises two parallel tubes 3a, 3b spaced from a width less than the width of the backrest 5 with a generally curved and elongated shape and closed on itself at both ends 3c, 3d. The ends of the metal structure 3 constituted by the two parallel tubes are rounded in an arc. In addition, the lower end 17 is folded slightly towards the back of the backrest 5 creating an offset with the tubes 3a, 3b. The metal structure 3 comprises at least one cross member 15 secured to the tubes 3a, 3b at the top of the backrest 5. A metal tube bent at its end connects it to the crossmember 15 in the middle to extend to the base 17a of the Bottom end 17. In profile, the tube 16 is projecting relative to the tube 3a, 3b of the metal structure 3. Several spacers 16a connect the tube 16 to the tubes 3a, 3b. Pierced lugs 3C are arranged in the upper part of the structure 3 projecting radially on the tubes 3a, 3b, while in the middle and lower part of the plates 3d, 3e pierces are connected to the tubes 3a, 3b, 16 and the spacers 16a. The holes are in correspondences with the wells 7 of the holding element 2 whose lower end terminates at the cross member 16b of the structure 3. The lower end of the structure 3 comprises a yoke 18 to allow to fix a means of maneuver the inclination of the backrest 5. Joints 19 are provided at the bottom rail 16b. Finally, the plastic shell 4 constituting the back of the seat back 5, has on its width a concavity 30 directed towards the inside of the seat and has a generally curved shape on its height. This concavity 30 is intended to cap the reinforcing tube 16. The shell 4 is advantageously reinforced by a reinforcement in half shells, of concave shape 32 interrupted in the middle for the passage of the projecting tube 16. In addition, the shell 4 comprises at least six wells 31 directed towards the inside of the seat, made of material for receiving the screwing elements. The wells 7, the holding element 2, the holes of the legs 3C and the plates 3d, 3e and the wells 31 of the plastic shell 4 are in correspondence so as to sandwich the metal structure 3 between the element of FIG. maintaining 2 and the shell 4 according to the arrows 33 and 34. In addition, the wells 7 and 31 are sized to obtain a perfect fit of the three elements 2, 3, 4 constituting the frame 1 thus achieving a remarkable perceived quality. The assembly is carried out by inserting screws in the wells 31 of the shell 4 which pass through the bores of the metal structure 3 and which engage in the inserts of the wells 7 of the holding element 2.
Les figures 2 à 4 montrent une vue de profil du siège 35, et en particulier les différentes étapes de constitution du dossier 5 selon l'invention. La figure 2 montre la constitution de l'assise 36 comprenant un support 37 profilé métallique, un élément en plastique 38 de recouvrement et une structure 39 métallique assemblés ensembles pour assurer la cohésion et la tenue mécanique de l'assise 36. La vue montre également la structure 3 métallique qui assure la résistance et la tenue mécanique du dossier 5, décrite à l'appui de la figure 1 et montée sur l'assise 36. En particulier, sur la vue on voit les articulations 19 assurant la liaison avec l'assise 36, permettant le pivotement ou le basculement du dossier 5. L'extrémité inférieure 17 de la structure 3 métallique repliée légèrement vers l'arrière des tubes 3a, 3b du dossier 5, permet la fixation de la tige d'un vérin dans la chape 18 solidaire de la structure 3.  Figures 2 to 4 show a side view of the seat 35, and in particular the different stages of constitution of the folder 5 according to the invention. FIG. 2 shows the constitution of the seat 36 comprising a metal profile support 37, a plastic covering element 38 and a metal structure 39 assembled together to ensure the cohesion and the mechanical strength of the seat 36. The view also shows the metal structure 3 which provides the strength and mechanical strength of the backrest 5, described in support of Figure 1 and mounted on the seat 36. In particular, on the view we see the joints 19 ensuring the connection with the seat 36, allowing the pivoting or tilting of the backrest 5. The lower end 17 of the metal structure 3 folded slightly towards the rear of the tubes 3a, 3b of the backrest 5, allows the attachment of the rod of a jack in the clevis 18 secured to the structure 3.
La figure 3 montre le siège 35 comprenant une assise 36 équipée de sa garniture 40 recouvrant classiquement une mousse assemblée sur l'assise 36. Sur la vue, la structure 3 métallique du dossier 5 est recouverte par l'élément de maintien 2 sur lequel la mousse enveloppée par la garniture 20 est fixée de préférence par collage. Les puits 7 de l'élément de maintien 2 ont une profondeur qui affleure l'axe longitudinal des tubes 3a, 3b. La figure 4 montre le siège 35 comprenant une assise 36 sur laquelle le dossier 5 est monté totalement équipé par l'élément de maintien 2 en plastique, sur lequel la mousse enveloppée par la garniture 20 est fixée, la structure 3 métallique (non visible) et une coque 4 en plastique de finition constituant le dossier 5 du siège 35. L'assemblage est réalisé en insérant des vis dans les puits 31 de la coque 4 permettant de fournir une qualité perçue remarquable. FIG. 3 shows the seat 35 comprising a seat 36 equipped with its lining 40 conventionally covering a foam assembled on the seat 36. In the view, the metal structure 3 of the backrest 5 is covered by the holding element 2 on which the Foam wrapped with the liner 20 is preferably fixed by gluing. The wells 7 of the holding member 2 have a depth which is flush with the longitudinal axis of the tubes 3a, 3b. FIG. 4 shows the seat 35 comprising a seat 36 on which the backrest 5 is mounted completely equipped by the plastic holding element 2, on which the foam wrapped by the lining 20 is fixed, the metallic structure 3 (not visible). and a shell 4 made of plastic constituting the backrest 5 of the seat 35. The assembly is achieved by inserting screws into the wells 31 of the shell 4 to provide a remarkable perceived quality.
La figure 5 illustre une vue arrière gauche en perspective de la structure 3 métallique constitutive du dossier 5 du siège selon l'invention. Cette vue illustre plus spécifiquement le tube 16 qui a une fonction de raidisseur. Son extrémité supérieure 16c est cintrée pour venir se fixer au milieu, sur la traverse 15 raccordant les deux tubes 3a, 3b, et représentant le haut du dossier, la partie supérieure représentant l'enveloppe de l'appuie-tête. Le tube 16 se prolonge entre, et à distance des tubes 3a, 3b en vue de profil, régulièrement et galbée 14a en suivant le gable 14 des tubes 3a, 3b pour se raccorder solidairement à la base 17a de l'extrémité inférieure tubulaire 17 de la structure 3. L'extrémité inférieure tubulaire 17 a été cintrée vers l'arrière du dossier depuis l'articulation 19 qui représente le bas du dossier, de manière à assurer une distance régulière du tube 16 par rapport au tube 3a, 3b et de permettre de fournir les moyens d'ancrages pour la fixation du dossier sur l'assise. La partie inférieure permettant la fixation du dossier dans les articulations 19 sur l'assise et la chape 18 permettant la fixation d'un vérin pour incliner plus ou moins le dossier du siège. En outre, une traverse 16b est présente au niveau des articulations 19, solidarisée aux tubes 3a, 3b. Cette traverse 19 est cintrée à ses extrémités de manière à la déporter vers l'arrière du dossier et à assurer dans sa partie médiane, sa fixation sur le tube 16. Un ensemble d ' entretoises 16a relie deux à deux sur la hauteur du dossier entre les traverses 15 et 16 b, le tube 16 aux tubes 3a, 3b formant une charpente réticulée. Ainsi, la structure métallique 3 est réticulée. Cette structure 3 réticulée présente une légèreté remarquable par l'utilisation d'éléments tubulaire et une haute résistance dans toutes les configurations de chocs possibles . FIG. 5 illustrates a left rear view in perspective of the metallic structure constituting the backrest 5 of the seat according to the invention. This view more specifically illustrates the tube 16 which has a stiffener function. Its upper end 16c is bent to be fixed in the middle, on the crosspiece 15 connecting the two tubes 3a, 3b, and representing the top of the folder, the upper part representing the envelope of the headrest. The tube 16 extends between and at a distance from the tubes 3a, 3b in profile view, regularly and curved 14a following the gable 14 of the tubes 3a, 3b to connect integrally with the base 17a of the tubular lower end 17 of structure 3. The tubular lower end 17 has been bent towards the back of the backrest from the joint 19 which represents the bottom of the folder, so as to ensure a regular distance from the tube 16 relative to the tube 3a, 3b and to provide the anchoring means for fixing the folder on the seat. The lower part for fastening the backrest in the joints 19 on the seat and the yoke 18 for fixing a cylinder to incline more or less the seat back. In addition, a cross member 16b is present at the joints 19, secured to the tubes 3a, 3b. This crossbar 19 is bent at its ends so as to deport backward backrest and ensure in its middle part, its attachment to the tube 16. A set of spacers 16a connects two by two on the height of the backrest between the crosspieces 15 and 16b, the tube 16 to the tubes 3a, 3b forming a crosslinked framework. Thus, the metal structure 3 is crosslinked. This crosslinked structure 3 has a remarkable lightness through the use of tubular elements and high strength in all possible shock configurations.
La figure 6 montre une vue arrière de la structure 3 métallique constitutive du dossier 5 du siège selon l'invention sur laquelle figure les pattes percées 3C sont disposées dans la partie supérieure de la structure 3 en saillie radiale sur les tubes 3a, 3b, tandis que dans la partie médiane et inférieure, des membranes 3f relient les pattes percées 3d, 3e aux tubes 3a, 3b, 16 et aux entretoises 16a. Les membranes 3f et les pattes 3c, 3d, 3e ne participent pas à la tenue mécanique de la structure 3 métallique. Les perçages permettent simplement le passage des tiges qui assure le maintien et le centrage de la structure 3 entre l'élément de maintien 2 en plastique, et la coque 4 en plastique pour créer l'armature du dossier. FIG. 6 shows a rear view of the constituent metal structure 3 of the backrest 5 of the seat according to the invention on which the pierced lugs 3C are arranged in the upper part of the structure 3 projecting radially on the tubes 3a, 3b, while that in the middle and lower part, 3f membranes connect the drilled legs 3d, 3e to the tubes 3a, 3b, 16 and the spacers 16a. The membranes 3f and the tabs 3c, 3d, 3e do not participate in the mechanical strength of the metal structure 3. The holes simply allow the passage of the rods which ensures the maintenance and centering of the structure 3 between the holding element 2 of plastic, and the shell 4 plastic to create the frame of the folder.

Claims

REVENDICATIONS
Armature (1) de dossier (5) de siège de véhicule comprenant un élément de maintien (2) en plastique, une structure (3) métallique et une coque (4) en plastique caractérisé en ce que la structure métallique (3) est prise en sandwich entre l'élément de maintien (2) et la coque (4) permettant d'assurer une bonne cohésion du dossier (5) tout en réduisant sa masse .  Vehicle seat backrest frame (5) comprising a plastic holding element (2), a metal structure (3) and a plastic shell (4) characterized in that the metal structure (3) is taken sandwiched between the holding element (2) and the shell (4) to ensure good cohesion of the backrest (5) while reducing its mass.
Armature (1) selon la revendication 1, caractérisé en ce que l'élément de maintienReinforcement (1) according to claim 1, characterized in that the holding element
(2) reproduit la forme galbée du dossier (5) du siège (35) et à une épaisseur réduite. (2) reproduces the curved shape of the backrest (5) of the seat (35) and at a reduced thickness.
Armature (1) selon les revendications 1 ou 2 caractérisé en ce que l'élément de maintien (2) comporte au moins six puits (7) pour recevoir les éléments de vissage. Armature (1) according to claims 1 or 2 characterized in that the holding member (2) comprises at least six wells (7) for receiving the screw elements.
Armature (1) selon la revendication 3, caractérisé en ce que les puits (7) sont venus de matière avec l'élément de maintien (2) . Armature (1) according to claim 3, characterized in that the wells (7) are integral with the holding element (2).
Armature (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de maintien (2) comporte des zones d'allégement (8) (9) (10) sous forme d'ouvertures au niveau de l'appuie-tête (11), et sur sa surface supérieure (12) et sur sa surface inférieure (13). Reinforcement (1) according to any one of the preceding claims, characterized in that the holding element (2) comprises lightening zones (8) (9) (10) in the form of openings at the level of the head restraint (11), and on its upper surface (12) and on its lower surface (13).
Armature (1) selon la revendication 1, caractérisé en ce que la structure métallique (3) de l'armature (1) est réticulée, permettant d'obtenir une résistance accrue et une bonne tenue mécanique du dossier (5) . Armature (1) selon la revendication 1 ou 6, caractérisé en ce que la structure (3) métallique est tubulaire (3a) (3b) (15). Armature (1) according to claim 1, characterized in that the metal structure (3) of the frame (1) is crosslinked, to obtain increased strength and good mechanical strength of the backrest (5). Armature (1) according to claim 1 or 6, characterized in that the structure (3) is tubular metal (3a) (3b) (15).
Armature (1) selon les revendications 1 ou 6, 7, caractérisé en ce que la structure (3) métallique comprend deux tubes (3a) (3b) parallèles avec une forme générale galbée et allongée et fermée sur elle-même aux extrémités . Reinforcement (1) according to claims 1 or 6, 7, characterized in that the structure (3) comprises two metal tubes (3a) (3b) parallel with a generally curved and elongated and closed on itself at the ends.
Armature (1) selon la revendication 8, caractérisé en ce que les extrémités de la structure (3) métallique sont arrondies en arc de cercle. Armature (1) according to claim 8, characterized in that the ends of the structure (3) are rounded metal circular arc.
Armature (1) selon les revendications 1 et 6 à 9, caractérisé en ce que la structure (3) métallique comporte au moins six pattes (3c) (3d) (3e) comportant des ouvertures réparties deux à deux sur la longueur de la structure (3) métallique pour le passage des éléments de vissage. Reinforcement (1) according to claims 1 and 6 to 9, characterized in that the structure (3) has at least six metal legs (3c) (3d) (3e) having openings distributed in pairs along the length of the metal structure (3) for the passage of the screw elements.
Armature (1) selon la revendication 1, caractérisé en ce que la coque (4) en plastique constituant le dossier (5) du siège, possède sur sa largeur une concavité (30) dirigée vers l'intérieur du siège et à une forme générale galbée sur sa hauteur. Armature (1) according to claim 1, characterized in that the shell (4) plastic constituting the backrest (5) of the seat, has on its width a concavity (30) directed towards the inside of the seat and a general shape curved on its height.
Armature (1) selon la revendication 1 ou 11, caractérisé en ce que la coque (4) comporte au moins six puits (31) dirigés vers l'intérieur du siège, venus de matière avec la coque (4) pour recevoir les éléments de vissage. Reinforcement (1) according to claim 1 or 11, characterized in that the shell (4) comprises at least six wells (31) directed towards the inside of the seat, integral with the shell (4) to receive the elements of screwing.
Armature (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de maintien (2) en plastique, la structure (3) métallique et la coque (4) en plastique sont fixés ensembles par vissage dans des inserts fixés dans les puits (7) de l'élément de maintien (2), et des vis dont le filetage traversent les puits (31) de la coque (4) en plastique et les perçages des pattes 3C et des platines (3d) (3e) de la structure (3) métalliques pour venir en prise dans les inserts fixés dans les puits (7) de l'élément de maintien (2) . Reinforcement (1) according to any one of the preceding claims, characterized in that the plastic holding element (2), the metal structure (3) and the plastic shell (4) are fastened together by screwing into inserts. fixed in the wells (7) of the holding element (2), and screws whose threads pass through the wells (31) of the plastic shell (4) and the holes of the legs 3C and the plates (3d) ( 3e) of the metal structure (3) to engage the inserts fixed in the wells (7) of the holding element (2).
14. Siège comprenant une armature (1) de dossier comprenant un élément de maintien (2) en plastique, une structure (3) métallique et une coque (4) en plastique, selon l'une quelconque des revendications précédentes. A seat comprising a backrest frame (1) comprising a plastic holding element (2), a metal structure (3) and a plastic shell (4) according to any one of the preceding claims.
15. Véhicule comprenant un siège comportant une armature (1), selon la revendication 14. 15. Vehicle comprising a seat comprising an armature (1) according to claim 14.
PCT/FR2013/050020 2012-01-06 2013-01-04 Frame for the backrest a vehicle seat WO2013102743A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR1250149A FR2985467B1 (en) 2012-01-06 2012-01-06 VEHICLE SEAT BACK FOLDER REINFORCEMENT
FR1250173A FR2985468B1 (en) 2012-01-06 2012-01-06 PERFECTED FRAME OF VEHICLE SEAT BACKREST
FR1250149 2012-01-06
FR1250173 2012-01-06

Publications (1)

Publication Number Publication Date
WO2013102743A1 true WO2013102743A1 (en) 2013-07-11

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ID=47628355

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2013/050020 WO2013102743A1 (en) 2012-01-06 2013-01-04 Frame for the backrest a vehicle seat

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Country Link
WO (1) WO2013102743A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3010008A1 (en) * 2013-09-02 2015-03-06 Peugeot Citroen Automobiles Sa BIPARTIE MODULAR HULL CLADDING DEVICE FOR A REAR FRONT OF A VEHICLE SEAT BACK
FR3083490A1 (en) 2018-07-05 2020-01-10 Psa Automobiles Sa LIGHT FRAME FOR MOTOR VEHICLE SEAT AND SEAT HAVING SUCH A REINFORCEMENT

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19757060A1 (en) * 1997-12-20 1999-06-24 Bayerische Motoren Werke Ag Back rest for vehicle
EP1950086A2 (en) * 2007-01-23 2008-07-30 Lear Corporation Italia S.r.l. Motor-vehicle seat with backrest frame constituted by a monolithic structure made of magnesium alloy
FR2947775A1 (en) 2009-07-08 2011-01-14 Cera Frame for seat of motor vehicle, has support piece supporting against front of crosspiece such that support supporting towards rear causes displacement towards front of head-rest part by rotation of support piece around contact zone
FR2949398A1 (en) * 2009-09-03 2011-03-04 Faurecia Sieges Automobile VEHICLE SEAT AND METHOD FOR MANUFACTURING THE SAME

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19757060A1 (en) * 1997-12-20 1999-06-24 Bayerische Motoren Werke Ag Back rest for vehicle
EP1950086A2 (en) * 2007-01-23 2008-07-30 Lear Corporation Italia S.r.l. Motor-vehicle seat with backrest frame constituted by a monolithic structure made of magnesium alloy
FR2947775A1 (en) 2009-07-08 2011-01-14 Cera Frame for seat of motor vehicle, has support piece supporting against front of crosspiece such that support supporting towards rear causes displacement towards front of head-rest part by rotation of support piece around contact zone
FR2949398A1 (en) * 2009-09-03 2011-03-04 Faurecia Sieges Automobile VEHICLE SEAT AND METHOD FOR MANUFACTURING THE SAME

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3010008A1 (en) * 2013-09-02 2015-03-06 Peugeot Citroen Automobiles Sa BIPARTIE MODULAR HULL CLADDING DEVICE FOR A REAR FRONT OF A VEHICLE SEAT BACK
FR3083490A1 (en) 2018-07-05 2020-01-10 Psa Automobiles Sa LIGHT FRAME FOR MOTOR VEHICLE SEAT AND SEAT HAVING SUCH A REINFORCEMENT

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