EP2776277A1 - Improved articulation device for articulating a motor vehicle seat backrest and associated vehicle seat - Google Patents

Improved articulation device for articulating a motor vehicle seat backrest and associated vehicle seat

Info

Publication number
EP2776277A1
EP2776277A1 EP12794397.5A EP12794397A EP2776277A1 EP 2776277 A1 EP2776277 A1 EP 2776277A1 EP 12794397 A EP12794397 A EP 12794397A EP 2776277 A1 EP2776277 A1 EP 2776277A1
Authority
EP
European Patent Office
Prior art keywords
backrest
seat
piece
pivoting
drive system
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.)
Withdrawn
Application number
EP12794397.5A
Other languages
German (de)
French (fr)
Inventor
Frederic PINTO TEIXEIRA
Stephane Lesieur
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.)
PSA Automobiles SA
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
Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP2776277A1 publication Critical patent/EP2776277A1/en
Withdrawn legal-status Critical Current

Links

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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/02246—Electric motors therefor
    • 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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/1605—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the cinematic
    • B60N2/161—Rods
    • B60N2/1615—Parallelogram-like structure
    • 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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
    • B60N2/225—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by cycloidal or planetary mechanisms
    • 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
    • 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
    • B60N2/682—Joining means

Definitions

  • the invention mainly relates to a motor vehicle seat back articulation device relative to the seat of the same seat.
  • the invention also relates to a motor vehicle seat provided with at least one such articulation device.
  • Known articulation devices of the motor vehicle seat backs relative to the seat of the same seat involve reinforcements elements mounted in the backrest as well as hinge parts integral with these reinforcing elements and the seat cushion .
  • the reinforcing elements are most often in the form of two flanges respectively located at the opposite side edges of the backrest, a high and low cross and a central suspension ply located at the rear face of the folder.
  • each flange is secured to a hinge module so that the seat has two hinge modules forming the hinge part of the seat and which are located at the opposite side parts of the seat at the junction between the seat. seat and the seat.
  • the articulation modules thus form hard and prominent points of the seat, hindering the occupant of the rear seat since his shins and his feet are directly in contact support with the back of the front seat and more particularly against the hard spots formed by these articulation modules.
  • the present invention aims a hinge device to overcome the aforementioned drawback.
  • the invention aims at a hinge system adapted not only to the pivoting drive of the seat by the occupant of this seat, but also adapted to the pivoting drive of the seat to release access to the rear seats , especially in a vehicle said to three doors.
  • the hinge device of the invention is essentially characterized in that at least one reinforcing piece is secured to the backrest by extending over at least a portion of the height of the rear face of the backrest until at the lower part of the said rear face of the file at the level of which the reinforcing piece is secured to at least one articulated joint piece of the seat which comprises at least one drive system pivoting the backrest relative to the seat by the occupant of said seat.
  • the articulation system of the invention may also include the following optional features considered in isolation or in any possible technical combination:
  • the reinforcing element is a metal insert which is adapted to be overmolded on the seat back made of composite material.
  • the articulation piece is centered on the main longitudinal axis of the backrest, the width of the upper part of the reinforcing piece is greater than the width of the lower part of the reinforcing piece which is secured to the piece of reinforcement; 'joint.
  • the articulation member further comprises a drive system pivoting the backrest relative to the seat to release access to the rear seats of the vehicle.
  • the device of the invention comprises two reinforcing elements symmetrically arranged relative to each other with respect to the main longitudinal axis of the backrest by forming the reinforcing piece, and whose respective lower part is integral with a hinge element, the two hinge elements are symmetrically arranged relative to one another relative to the main longitudinal axis of the backrest forming the hinge part, and in that the two articulating elements define the first drive system pivoting the backrest by the occupant of the seat, and the second drive system pivoting the backrest to release access to the rear seats of the motor vehicle, the second system pivoting drive of the backrest being disposed above the first drive system in pivoting the backrest.
  • the reinforcement piece has two upper zones that are symmetrically arranged relative to one another relative to the main longitudinal axis of the backrest, and the lower part of the reinforcing piece is secured to the piece of reinforcement.
  • a hinge which is tubular and which defines the first drive system in pivoting of the backrest by the occupant of the seat and the second drive system in pivoting of the backrest to release access to the rear seats of the motor vehicle, the first and second pivoting drive systems of the backrest being coaxially arranged relative to each other in the tubular joint piece.
  • the invention also relates to a motor vehicle seat which is essentially characterized in that it comprises at least one articulation device as previously defined and in that the reinforcing element of said articulation device is overmolded on the seat back which is made of composite material.
  • the seat of the invention may also include the following optional features considered in isolation or in any possible technical combination:
  • the composite material in which is made the seat back is based on polyamide.
  • the two opposite side edges of the folder each comprise a lateral recess at least at the bottom of the folder releasing at least the opposite side spaces of the lower part of the folder over the entire width of said folder.
  • FIG. 1 is a diagrammatic representation in rear perspective of a seat of the invention provided with a hinge device of the invention according to a first variant
  • FIG. 2 is a diagrammatic representation in rear perspective of a seat of the invention provided with a hinge device of the invention according to a first variant
  • FIG. 3 is an enlarged schematic and exploded representation of the articulation part of the hinge device of the second variant.
  • a seat 1 comprises a seat 2 and a backrest 3 which has a longitudinal main axis XX 'and which is pivotally mounted relative to the seat 2 about a pivot axis P.
  • the articulation device 4 comprises a reinforcing part 5 which extends over part of the height of the rear face 6 of the backrest 3 from the upper part 7 of the rear face 6 of this backrest 3 until 'at the lower part 8 of the rear face 6 of the backrest 3 at which the piece of reinforcement 5 is secured to a hinge part 9 centered on the main longitudinal axis XX 'of the backrest 3.
  • the reinforcing element 5 comprises a first 5a and a second 5b reinforcement elements symmetrically arranged relative to each other relative to the longitudinal main axis XX 'of the backrest 3 and each having a chistera shape. .
  • the width 11 taken at the upper part 10 of the reinforcing piece 5 is greater than the width 12 taken at the lower part 1 1 of the reinforcing piece 5 at which the reinforcing piece 5 is secured to the articulation piece 9.
  • This arrangement makes it possible to center the articulation piece 9 on the main longitudinal axis XX 'of the backrest 3 for the reasons that will be explained later.
  • Each reinforcing element 5a, 5b is a metal insert which is overmolded on the rear face 6 of the seat backrest 3 made of a composite material, for example a filled polyamide.
  • the hinge piece 9 is secured to the seat 2 by means of a transverse yoke 13 fixed on the seat 2 at the connection areas 14a, 14b.
  • Each reinforcing element 5a, 5b is secured at its respective lower part 1 1a, 1 1b to a first 9a and second 9b articulation member which constitute the articulation part 9 and which are symmetrically arranged the one relative to the other relative to the main longitudinal axis XX 'of the file 3.
  • the two articulation elements 9a, 9b define on the one hand an electrical drive system pivoting 14 of the backrest 3 relative to the seat 2 by the occupant of the seat 1 and on the other hand a mechanical drive system pivoting 15 of the backrest 3 relative to the seat 2 to release access to the rear seats of the vehicle in the case of a said three-door vehicle.
  • the mechanical drive system 15 for pivoting the backrest 3 is manually controlled by the handle 16 located at the upper part 7 of the backrest 3 via cables 17a, 17b.
  • the mechanical drive system 15 for pivoting the backrest 3 is located above the electric drive system pivoting 14 of the folder 3 relative to the seat 2 by the occupant of the seat 1 in the articulation part 5 of Figure 1.
  • This configuration of the hinge device of the invention has two main advantages.
  • the articulation piece 9 being centered at the lower part 8 of the backrest 3, the occupant of the rear seat can position his feet and shins on either side of the seat 1 without being in contact with hard and prominent spots formed by the hinge piece 9.
  • the composite material nature of the seat backrest 3 which made possible by the specific configuration and position of the reinforcing part 5 allows to provide substantial weight relief of the seat.
  • a seat 21 comprises a seat 22 and a backrest
  • the hinge device 24 comprises a reinforcement piece 25 which extends over part of the height of the back face 26 of the backrest.
  • the reinforcing element 25 has a first upper zone 25a and a second upper zone 25b symmetrically arranged relative to one another relative to the longitudinal principal axis ⁇ of the backrest 23 so that the element reinforcement 25 has a general shape in Y.
  • the width 11 'taken at the upper portion 30 of the reinforcing piece 25 is greater than the width 12' taken at the lower portion 31 of the reinforcing piece 25 at which the reinforcing piece 25 is secured to the articulation piece 29.
  • This arrangement makes it possible to center the hinge piece 29 on the main longitudinal axis ⁇ of the backrest 23.
  • the reinforcement piece 25 is a metal insert which is overmolded on the rear face 26 of the seat backrest 23 made of a composite material, for example a filled polyamide.
  • the hinge piece 29 is tubular and coaxially disposed between two frustoconical connections 33a, 33b respectively connected to the connection points with the seat 34a, 34b.
  • the articulation piece 29 comprises an electric pivoting drive system 34 of the backrest 23 relative to the seat 22 by the occupant of the seat 21.
  • This electrical drive system pivoting 34 of the backrest 23 consists of a so-called continuous articulation.
  • the hinge part 29 further comprises a mechanical drive system pivoting the backrest 23 relative to the seat 22 to release access to the rear seats of the vehicle in the case of a so-called three-door vehicle.
  • This mechanical pivoting drive system 35 of the backrest 23 is coaxially juxtaposed at the opposite outer edges 36a, 36b of the electric drive system pivoting 34 of the backrest 23.
  • This mechanical pivoting drive system 35 consists of a so-called discontinuous articulation.
  • the mechanical pivoting drive system 35 of the backrest 3 is controlled manually by a not shown handle located at the upper part 27 of the backrest 23 via cables not shown similar to the manual control device described and shown in FIG. the first variant.
  • the opposite lateral edges 37a, 37b comprise a lateral recess at least at the bottom portion 28 of the backrest 23, which lower portion 28 has a width substantially equal to the width 12 'of the lower part of the reinforcement piece 25 and less than the width of the articulation piece 29 and this, over the entire width of the backrest 23.
  • This configuration of the seat backrest 21 allows, while ensuring the dorsal maintenance of the occupant of the seat 21, to release the opposite lateral spaces of the lower portion 28 of the seat backrest 23 over the entire width of the backrest 23, this allows the occupant of the rear seat to comfortably arrange his feet and shins.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Abstract

The invention relates chiefly to a device for articulating a motor vehicle seat backrest relative to the seating portion of said seat which is essentially characterized in that at least one reinforcing element (25) is secured to the backrest (23), extending over at least part of the height of the rear face (26) of the backrest (23) as far as the lower part (28) of said rear face of the backrest (23) where the reinforcing element (25) is secured to at least one articulation component (29) secured to the seating portion (22) which comprises at least a system whereby the occupant of said seat (21) can make the backrest (34) pivot relative to the seating portion (22). The invention also relates to a motor vehicle seat which is essentially characterized in that the reinforcing element (25) of said articulation device (24) is overmoulded onto the backrest (23) of the seat (21) which backrest is made of a composite material.

Description

DISPOSITIF D'ARTICULATION AMELIORE D'UN DOSSIER DE SIEGE DE VEHICULE AUTOMOBILE ET SIEGE DE VEHICULE ASSOCIE.  IMPROVED JOINT DEVICE FOR A SEAT BACK OF A MOTOR VEHICLE AND ASSOCIATED VEHICLE SEAT.
L'invention concerne principalement un dispositif d'articulation de dossier de siège de véhicule automobile relativement à l'assise de ce même siège. The invention mainly relates to a motor vehicle seat back articulation device relative to the seat of the same seat.
L'invention concerne également un siège de véhicule automobile muni au moins d'un tel dispositif d'articulation.  The invention also relates to a motor vehicle seat provided with at least one such articulation device.
Les dispositifs d'articulation connus des dossiers de sièges de véhicule automobile relativement à l'assise du même siège impliquent des éléments de renforts montés dans le dossier ainsi que des pièces d'articulation solidaires de ces éléments de renforts et de l'assise du siège.  Known articulation devices of the motor vehicle seat backs relative to the seat of the same seat involve reinforcements elements mounted in the backrest as well as hinge parts integral with these reinforcing elements and the seat cushion .
Les éléments de renfort se présentent le plus souvent sous la forme de deux flasques respectivement situées au niveau des bords latéraux opposés du dossier, d'une traverse haute et basse ainsi que d'une nappe de suspension centrale situés au niveau de la face arrière du dossier.  The reinforcing elements are most often in the form of two flanges respectively located at the opposite side edges of the backrest, a high and low cross and a central suspension ply located at the rear face of the folder.
La partie inférieure de chaque flasque est solidarisée à un module d'articulation de sorte que le siège présente deux modules d'articulation formant la pièce d'articulation du siège et qui sont situés au niveau des parties latérales opposées du siège à la jonction entre le siège et l'assise.  The lower part of each flange is secured to a hinge module so that the seat has two hinge modules forming the hinge part of the seat and which are located at the opposite side parts of the seat at the junction between the seat. seat and the seat.
Les modules d'articulations forment ainsi des points durs et proéminents du siège, gênant l'occupant du siège arrière puisque ses tibias et ses pieds sont directement en appui de contact avec le dossier du siège avant et plus particulièrement contre les points durs formés par ces modules d'articulation.  The articulation modules thus form hard and prominent points of the seat, hindering the occupant of the rear seat since his shins and his feet are directly in contact support with the back of the front seat and more particularly against the hard spots formed by these articulation modules.
Dans ce contexte, la présente invention vise un dispositif d'articulation permettant de pallier l'inconvénient précité.  In this context, the present invention aims a hinge device to overcome the aforementioned drawback.
Plus encore, l'invention vise un système d'articulation adapté non seulement à l'entraînement en pivotement du siège par l'occupant de ce siège, mais également adapté à l'entraînement en pivotement du siège pour libérer l'accès au places arrières, notamment dans un véhicule dit à trois portes.  Moreover, the invention aims at a hinge system adapted not only to the pivoting drive of the seat by the occupant of this seat, but also adapted to the pivoting drive of the seat to release access to the rear seats , especially in a vehicle said to three doors.
A cet effet, le dispositif d'articulation de l'invention est essentiellement caractérisé en ce qu'au moins une pièce de renfort est solidarisée au dossier en s'étendant sur au moins une partie de la hauteur de la face arrière du dossier jusqu'à la partie inférieure de la dite face arrière du dossier au niveau de laquelle la pièce de renfort est solidarisée à au moins une pièce d'articulation solidaire de l'assise qui comporte au moins un système d'entraînement en pivotement du dossier relativement à l'assise par l'occupant du dit siège. For this purpose, the hinge device of the invention is essentially characterized in that at least one reinforcing piece is secured to the backrest by extending over at least a portion of the height of the rear face of the backrest until at the lower part of the said rear face of the file at the level of which the reinforcing piece is secured to at least one articulated joint piece of the seat which comprises at least one drive system pivoting the backrest relative to the seat by the occupant of said seat.
Le système d'articulation de l'invention peut également comporter les caractéristiques optionnelles suivantes considérées isolément ou selon toutes les combinaisons techniques possibles :  The articulation system of the invention may also include the following optional features considered in isolation or in any possible technical combination:
- l'élément de renfort est un insert métallique qui est apte à être surmoulé sur le dossier de siège réalisé en matériau composite.  - The reinforcing element is a metal insert which is adapted to be overmolded on the seat back made of composite material.
- la pièce d'articulation est centrée sur l'axe principal longitudinal du dossier, - la largeur de la partie supérieure de la pièce de renfort est supérieure à la largeur de la partie inférieure de la pièce de renfort qui est solidarisée à la pièce d'articulation.  the articulation piece is centered on the main longitudinal axis of the backrest, the width of the upper part of the reinforcing piece is greater than the width of the lower part of the reinforcing piece which is secured to the piece of reinforcement; 'joint.
- la pièce d'articulation comporte en outre un système d'entraînement en pivotement du dossier relativement à l'assise pour libérer l'accès aux places arrières du véhicule.  - The articulation member further comprises a drive system pivoting the backrest relative to the seat to release access to the rear seats of the vehicle.
- selon une première variante, le dispositif de l'invention comporte deux éléments de renfort symétriquement disposés l'un par rapport à l'autre relativement à l'axe principal longitudinal du dossier en formant la pièce de renfort, et dont la partie inférieure respective est solidaire d'un élément d'articulation, les deux éléments d'articulation sont symétriquement disposés l'un par rapport à l'autre relativement à l'axe principal longitudinal du dossier en formant la pièce d'articulation, et en ce que les deux éléments d'articulation définissent le premier système d'entraînement en pivotement du dossier par l'occupant du siège, ainsi que le second système d'entraînement en pivotement du dossier pour libérer l'accès aux places arrières du véhicule automobile, le second système d'entraînement en pivotement du dossier étant disposé au dessus du premier système d'entraînement en pivotement du dossier.  according to a first variant, the device of the invention comprises two reinforcing elements symmetrically arranged relative to each other with respect to the main longitudinal axis of the backrest by forming the reinforcing piece, and whose respective lower part is integral with a hinge element, the two hinge elements are symmetrically arranged relative to one another relative to the main longitudinal axis of the backrest forming the hinge part, and in that the two articulating elements define the first drive system pivoting the backrest by the occupant of the seat, and the second drive system pivoting the backrest to release access to the rear seats of the motor vehicle, the second system pivoting drive of the backrest being disposed above the first drive system in pivoting the backrest.
- selon une seconde variante, la pièce de renfort présente deux zones supérieures symétriquement disposées l'une par rapport à l'autre relativement à l'axe principal longitudinal du dossier, et la partie inférieure de la pièce de renfort est solidarisée à la pièce d'articulation qui est tubulaire et qui définit le premier système d'entraînement en pivotement du dossier par l'occupant du siège ainsi que le second système d'entraînement en pivotement du dossier pour libérer l'accès aux places arrières du véhicule automobile, les premier et second systèmes d'entraînement en pivotement du dossier étant coaxialement disposés l'un par rapport à l'autre dans la pièce d'articulation tubulaire. according to a second variant, the reinforcement piece has two upper zones that are symmetrically arranged relative to one another relative to the main longitudinal axis of the backrest, and the lower part of the reinforcing piece is secured to the piece of reinforcement. a hinge which is tubular and which defines the first drive system in pivoting of the backrest by the occupant of the seat and the second drive system in pivoting of the backrest to release access to the rear seats of the motor vehicle, the first and second pivoting drive systems of the backrest being coaxially arranged relative to each other in the tubular joint piece.
L'invention porte également sur un siège de véhicule automobile qui est essentiellement caractérisé en ce qu'il comporte au moins un dispositif d'articulation tel que précédemment défini et en ce que l'élément de renfort du dit dispositif d'articulation est surmoulé sur le dossier de siège qui est réalisé en matériau composite.  The invention also relates to a motor vehicle seat which is essentially characterized in that it comprises at least one articulation device as previously defined and in that the reinforcing element of said articulation device is overmolded on the seat back which is made of composite material.
Le siège de l'invention peut également comporter les caractéristiques optionnelles suivantes considérées isolément ou selon toutes les combinaisons techniques possibles :  The seat of the invention may also include the following optional features considered in isolation or in any possible technical combination:
- le matériau composite dans lequel est réalisé le dossier de siège est à base de polyamide.  - The composite material in which is made the seat back is based on polyamide.
- les deux bords latéraux opposés du dossier comportent chacun un évidement latéral au moins au niveau de la partie inférieure du dossier libérant au moins les espaces latéraux opposés de la partie inférieure du dossier sur toute la largeur du dit dossier.  - The two opposite side edges of the folder each comprise a lateral recess at least at the bottom of the folder releasing at least the opposite side spaces of the lower part of the folder over the entire width of said folder.
D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est donnée ci-dessous, à titre indicatif et nullement limitatif, en référence aux figures annexées parmi lesquelles :  Other features and advantages of the invention will emerge clearly from the description which is given below, by way of indication and in no way limitative, with reference to the appended figures among which:
- la figure 1 est une représentation schématique en perspective arrière d'un siège de l'invention muni d'un dispositif d'articulation de l'invention selon une première variante,  FIG. 1 is a diagrammatic representation in rear perspective of a seat of the invention provided with a hinge device of the invention according to a first variant,
- la figure 2 est une représentation schématique en perspective arrière d'un siège de l'invention muni d'un dispositif d'articulation de l'invention selon une première variante, et  FIG. 2 is a diagrammatic representation in rear perspective of a seat of the invention provided with a hinge device of the invention according to a first variant, and
- la figure 3 est une représentation schématique agrandie et éclatée de la pièce d'articulation du dispositif d'articulation de la seconde variante.  - Figure 3 is an enlarged schematic and exploded representation of the articulation part of the hinge device of the second variant.
En référence à la figure 1 , un siège 1 comporte une assise 2 et un dossier 3 qui présente un axe principal longitudinal XX' et qui est monté en pivotement relativement à l'assise 2 autour d'un axe de pivotement P.  Referring to Figure 1, a seat 1 comprises a seat 2 and a backrest 3 which has a longitudinal main axis XX 'and which is pivotally mounted relative to the seat 2 about a pivot axis P.
Selon l'invention, le dispositif d'articulation 4 comporte une pièce de renfort 5 qui s'étend sur une partie de la hauteur de la face arrière 6 du dossier 3 depuis la partie supérieure 7 de la face arrière 6 de ce dossier 3 jusqu'à la partie inférieure 8 de la face arrière 6 du dossier 3 au niveau de laquelle la pièce de renfort 5 est solidarisée à une pièce d'articulation 9 centrée sur l'axe principal longitudinal XX' du dossier 3. According to the invention, the articulation device 4 comprises a reinforcing part 5 which extends over part of the height of the rear face 6 of the backrest 3 from the upper part 7 of the rear face 6 of this backrest 3 until 'at the lower part 8 of the rear face 6 of the backrest 3 at which the piece of reinforcement 5 is secured to a hinge part 9 centered on the main longitudinal axis XX 'of the backrest 3.
Plus précisément, l'élément de renfort 5 comporte un premier 5a et un second 5b éléments de renfort symétriquement disposées l'un par rapport à l'autre relativement à l'axe principal longitudinal XX' du dossier 3 et présentant chacun une forme de chistera.  More specifically, the reinforcing element 5 comprises a first 5a and a second 5b reinforcement elements symmetrically arranged relative to each other relative to the longitudinal main axis XX 'of the backrest 3 and each having a chistera shape. .
Ainsi, la largeur 11 prise au niveau de la partie supérieure 10 de la pièce de renfort 5 est supérieure à la largeur 12 prise au niveau de la partie inférieure 1 1 de la pièce de renfort 5 au niveau de laquelle la pièce de renfort 5 est solidarisée à la pièce d'articulation 9.  Thus, the width 11 taken at the upper part 10 of the reinforcing piece 5 is greater than the width 12 taken at the lower part 1 1 of the reinforcing piece 5 at which the reinforcing piece 5 is secured to the articulation piece 9.
Cette disposition permet de pouvoir centrer la pièce d'articulation 9 sur l'axe principal longitudinal XX' du dossier 3 pour les raisons qui seront expliquées plus loin.  This arrangement makes it possible to center the articulation piece 9 on the main longitudinal axis XX 'of the backrest 3 for the reasons that will be explained later.
Chaque élément de renfort 5a, 5b est un insert métallique qui est surmoulé sur la face arrière 6 du dossier 3 de siège 1 réalisé en un matériau composite, par exemple un polyamide chargé.  Each reinforcing element 5a, 5b is a metal insert which is overmolded on the rear face 6 of the seat backrest 3 made of a composite material, for example a filled polyamide.
La pièce d'articulation 9 est solidarisée à l'assise 2 par l'intermédiaire d'un étrier transversal 13 fixé sur l'assise 2 au niveau des zones de raccordements 14a, 14b.  The hinge piece 9 is secured to the seat 2 by means of a transverse yoke 13 fixed on the seat 2 at the connection areas 14a, 14b.
Chaque élément de renfort 5a,5b est solidarisé au niveau de sa partie inférieure respective 1 1 a,1 1 b à un premier 9a et à seconde 9b élément d'articulation qui constituent la pièce d'articulation 9 et qui sont symétriquement disposés l'un par rapport à l'autre relativement à l'axe principal longitudinal XX' du dossier 3.  Each reinforcing element 5a, 5b is secured at its respective lower part 1 1a, 1 1b to a first 9a and second 9b articulation member which constitute the articulation part 9 and which are symmetrically arranged the one relative to the other relative to the main longitudinal axis XX 'of the file 3.
Les deux éléments d'articulation 9a,9b définissent d'une part un système d'entraînement électrique en pivotement 14 du dossier 3 relativement à l'assise 2 par l'occupant du siège 1 et d'autre part un système d'entraînement mécanique en pivotement 15 du dossier 3 relativement à l'assise 2 pour libérer l'accès aux sièges arrière du véhicule dans la cas d'un véhicule dit à trois portes.  The two articulation elements 9a, 9b define on the one hand an electrical drive system pivoting 14 of the backrest 3 relative to the seat 2 by the occupant of the seat 1 and on the other hand a mechanical drive system pivoting 15 of the backrest 3 relative to the seat 2 to release access to the rear seats of the vehicle in the case of a said three-door vehicle.
Le système d'entraînement mécanique en pivotement 15 du dossier 3 est commandé manuellement par la poignée 16 située au niveau de la partie supérieure 7 du dossier 3 via des câbles 17a, 17b.  The mechanical drive system 15 for pivoting the backrest 3 is manually controlled by the handle 16 located at the upper part 7 of the backrest 3 via cables 17a, 17b.
Par ailleurs, le système d'entraînement mécanique en pivotement 15 du dossier 3 est situé au dessus du système d'entraînement électrique en pivotement 14 du dossier 3 relativement à l'assise 2 par l'occupant du siège 1 dans la pièce d'articulation 5 de la figure 1 . Furthermore, the mechanical drive system 15 for pivoting the backrest 3 is located above the electric drive system pivoting 14 of the folder 3 relative to the seat 2 by the occupant of the seat 1 in the articulation part 5 of Figure 1.
Cette configuration du dispositif d'articulation de l'invention présente deux avantages principaux. D'une part, la pièce d'articulation 9 étant centrée au niveau de la partie inférieure 8 du dossier 3, l'occupant du siège arrière pourra positionner ses pieds et ses tibias de part et d'autre du siège 1 sans être en contact avec des points durs et proéminents formés par la pièce d'articulation 9.  This configuration of the hinge device of the invention has two main advantages. On the one hand, the articulation piece 9 being centered at the lower part 8 of the backrest 3, the occupant of the rear seat can position his feet and shins on either side of the seat 1 without being in contact with hard and prominent spots formed by the hinge piece 9.
Par ailleurs, la nature en matériau composite du dossier 3 de siège 1 qui rendu possible de part la configuration et la position spécifiques de la pièce de renfort 5 permet d'apporter un allégement en masse substantiel du siège.  Furthermore, the composite material nature of the seat backrest 3 which made possible by the specific configuration and position of the reinforcing part 5 allows to provide substantial weight relief of the seat.
En référence à la figure 2, un siège 21 comporte une assise 22 et un dossier With reference to FIG. 2, a seat 21 comprises a seat 22 and a backrest
23 qui présente un axe principal longitudinal XX1 ' et qui est monté en pivotement relativement à l'assise 2 autour d'un axe de pivotement P1 . 23 which has a longitudinal main axis XX1 'and which is pivotally mounted relative to the seat 2 about a pivot axis P1.
Selon l'invention, le dispositif d'articulation 24 comporte une pièce de renfort 25 qui s'étend sur une partie de la hauteur de la face arrière 26 du dossier According to the invention, the hinge device 24 comprises a reinforcement piece 25 which extends over part of the height of the back face 26 of the backrest.
23 depuis approximativement la mi-hauteur 27 de la face arrière 26 de ce dossier23 from approximately mid-height 27 of the back of this file
23 jusqu'à la partie inférieure 28 de la face arrière 26 du dossier 23 au niveau de laquelle la pièce de renfort 25 est solidarisée à une pièce d'articulation 29 centrée sur l'axe principal longitudinal XX1 ' du dossier 23. 23 up to the lower portion 28 of the rear face 26 of the backrest 23 at which the reinforcing piece 25 is secured to a hinge part 29 centered on the longitudinal main axis XX1 'of the backrest 23.
Plus précisément, l'élément de renfort 25 présente une première zone supérieure 25a et une seconde zone supérieure 25b symétriquement disposées l'une par rapport à l'autre relativement à l'axe principal longitudinal ΧΧΊ du dossier 23 de sorte que l'élément de renfort 25 présente une forme générale en Y.  More specifically, the reinforcing element 25 has a first upper zone 25a and a second upper zone 25b symmetrically arranged relative to one another relative to the longitudinal principal axis ΧΧΊ of the backrest 23 so that the element reinforcement 25 has a general shape in Y.
Ainsi, la largeur 11 ' prise au niveau de la partie supérieure 30 de la pièce de renfort 25 est supérieure à la largeur 12' prise au niveau de la partie inférieure 31 de la pièce de renfort 25 au niveau de laquelle la pièce de renfort 25 est solidarisée à la pièce d'articulation 29.  Thus, the width 11 'taken at the upper portion 30 of the reinforcing piece 25 is greater than the width 12' taken at the lower portion 31 of the reinforcing piece 25 at which the reinforcing piece 25 is secured to the articulation piece 29.
Cette disposition permet de pouvoir centrer la pièce d'articulation 29 sur l'axe principal longitudinal ΧΧΊ du dossier 23.  This arrangement makes it possible to center the hinge piece 29 on the main longitudinal axis ΧΧΊ of the backrest 23.
La pièce de renfort 25 est un insert métallique qui est surmoulé sur la face arrière 26 du dossier 23 de siège 21 réalisé en un matériau composite, par exemple un polyamide chargé. La pièce d'articulation 29 est tubulaire et coaxialement disposée entre deux raccordements tronconiques 33a, 33b respectivement reliés aux points de raccordements avec l'assise 34a,34b. The reinforcement piece 25 is a metal insert which is overmolded on the rear face 26 of the seat backrest 23 made of a composite material, for example a filled polyamide. The hinge piece 29 is tubular and coaxially disposed between two frustoconical connections 33a, 33b respectively connected to the connection points with the seat 34a, 34b.
En référence aux figures 2 et 3, la pièce d'articulation 29 comporte un système d'entraînement électrique en pivotement 34 du dossier 23 relativement à l'assise 22 par l'occupant du siège 21 . Ce système d'entraînement électrique en pivotement 34 du dossier 23 est constitué d'une articulation dite continue.  With reference to FIGS. 2 and 3, the articulation piece 29 comprises an electric pivoting drive system 34 of the backrest 23 relative to the seat 22 by the occupant of the seat 21. This electrical drive system pivoting 34 of the backrest 23 consists of a so-called continuous articulation.
La pièce d'articulation 29 comporte en outre un système d'entraînement mécanique en pivotement 35 du dossier 23 relativement à l'assise 22 pour libérer l'accès aux sièges arrière du véhicule dans le cas d'un véhicule dit à trois portes. Ce système d'entraînement mécanique en pivotement 35 du dossier 23 est coaxialement juxtaposé au niveau des bords externes opposés 36a,36b du système d'entraînement électrique en pivotement 34 du dossier 23. Ce système d'entraînement mécanique en pivotement 35 est constitué d'une articulation dite discontinue.  The hinge part 29 further comprises a mechanical drive system pivoting the backrest 23 relative to the seat 22 to release access to the rear seats of the vehicle in the case of a so-called three-door vehicle. This mechanical pivoting drive system 35 of the backrest 23 is coaxially juxtaposed at the opposite outer edges 36a, 36b of the electric drive system pivoting 34 of the backrest 23. This mechanical pivoting drive system 35 consists of a so-called discontinuous articulation.
Le système d'entraînement mécanique en pivotement 35 du dossier 3 est commandé manuellement par une poignée non représentée située au niveau de la partie supérieure 27 du dossier 23 via des câbles non représentés analogues au dispositif de commande manuel décrit et représenté sur la figure 1 de la première variante.  The mechanical pivoting drive system 35 of the backrest 3 is controlled manually by a not shown handle located at the upper part 27 of the backrest 23 via cables not shown similar to the manual control device described and shown in FIG. the first variant.
En référence à la figure 2, les bords latéraux opposés 37a,37b comportent un évidemment latéral au moins au niveau de la partie inférieure 28 du dossier 23 laquelle partie inférieure 28 présente une largeur sensiblement égale à la largeur 12' de la partie inférieure de la pièce de renfort 25 et inférieure à la largeur de la pièce d'articulation 29 et ce, sur toute la largeur du dossier 23.  With reference to FIG. 2, the opposite lateral edges 37a, 37b comprise a lateral recess at least at the bottom portion 28 of the backrest 23, which lower portion 28 has a width substantially equal to the width 12 'of the lower part of the reinforcement piece 25 and less than the width of the articulation piece 29 and this, over the entire width of the backrest 23.
Cette configuration du dossier 23 de siège 21 permet, tout en assurant le maintien dorsal de l'occupant du siège 21 , de libérer les espaces latéraux opposés de la partie inférieure 28 du dossier 23 de siège 21 sur tout la largeur de ce dossier 23, ce qui permet à l'occupant du siège arrière de pouvoir confortablement disposer ses pieds et ses tibias.  This configuration of the seat backrest 21 allows, while ensuring the dorsal maintenance of the occupant of the seat 21, to release the opposite lateral spaces of the lower portion 28 of the seat backrest 23 over the entire width of the backrest 23, this allows the occupant of the rear seat to comfortably arrange his feet and shins.
Il est possible de prévoir une forme de dossier de siège identique pour la première variante de la figure 1 , étant entendu que la largeur de la partie inférieure 8 du dossier 3 de siège 1 sera au moins également à la largeur entre les premier 9a et second 9b éléments d'articulation. Enfin, comme dans le cas de la première variante, la nature en matériau composite du dossier 23 de siège 21 qui est rendu possible de part la configuration et la position spécifiques de la pièce de renfort 25 permet d'apporter un allégement en masse substantiel du siège. It is possible to provide a form of identical seat back for the first variant of Figure 1, it being understood that the width of the lower portion 8 of the seat backrest 3 is at least equally to the width between the first 9a and second 9b articulation elements. Finally, as in the case of the first variant, the composite material nature of the seat backrest 21 which is made possible by the specific configuration and position of the reinforcing piece 25 makes it possible to provide substantial bulk weight relief. seat.

Claims

REVENDICATIONS
1 . Dispositif d'articulation d'un dossier de siège de véhicule automobile relativement à l'assise du dit siège, caractérisé en ce qu'au moins une pièce de renfort (5,25) est solidarisée au dossier (3,23) en s'étendant sur au moins une partie de la hauteur de la face arrière (6,26) du dossier (3,23) jusqu'à la partie inférieure (8,28) de la dite face arrière du dossier (3,23) au niveau de laquelle la pièce de renfort (5,25) est solidarisée à au moins une pièce d'articulation (9,29) solidaire de l'assise (2,22) qui comporte au moins un système d'entraînement en pivotement du dossier (14, 34) relativement à l'assise (2,22) par l'occupant du dit siège (1 ,21 ). 1. Device for articulating a motor vehicle seat back relative to the seat of said seat, characterized in that at least one reinforcing piece (5.25) is secured to the backrest (3.23) in its extending over at least a portion of the height of the rear face (6,26) of the backrest (3,23) to the bottom (8,28) of said rear face of the backrest (3,23) at the of which the reinforcement piece (5,25) is secured to at least one articulation piece (9,29) integral with the seat (2,22) which comprises at least one drive system for pivoting the backrest ( 14, 34) relative to the seat (2.22) by the occupant of said seat (1, 21).
2. Dispositif selon la revendication 1 , caractérisé en ce que l'élément de renfort (5,25) est un insert métallique qui est apte à être surmoulé sur le dossier2. Device according to claim 1, characterized in that the reinforcing element (5.25) is a metal insert which is adapted to be overmolded on the backrest
(3,23) de siège (1 ,21 ) réalisé en matériau composite. (3,23) seat (1, 21) made of composite material.
3. Dispositif selon l'une quelconque des revendications 1 et 2, caractérisé en ce que la pièce d'articulation (9,29) est centrée sur l'axe principal longitudinal (ΧΧ',ΧΧΊ ) du dossier (3,23). 3. Device according to any one of claims 1 and 2, characterized in that the articulation piece (9,29) is centered on the longitudinal main axis (ΧΧ ', ΧΧΊ) of the backrest (3,23).
4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la largeur (11 ,11 ') de la partie supérieure (10,30) de la pièce de renfort (5,25) est supérieure à la largeur (Ι2,Ι2') de la partie inférieure (1 1 ,31 ) de la pièce de renfort (5,25) qui est solidarisée à la pièce d'articulation (9,29). 4. Device according to any one of the preceding claims, characterized in that the width (11, 11 ') of the upper part (10,30) of the reinforcing piece (5,25) is greater than the width (Ι2 , Ι2 ') of the lower part (1 1, 31) of the reinforcing piece (5,25) which is secured to the articulation piece (9,29).
5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la pièce d'articulation (5,25) comporte en outre un système d'entraînement en pivotement du dossier (15,35) relativement à l'assise (2,22) pour libérer l'accès aux places arrières du véhicule. 5. Device according to any one of the preceding claims, characterized in that the articulation part (5,25) further comprises a pivoting drive system of the backrest (15,35) relative to the seat (2). , 22) to release access to the rear seats of the vehicle.
6. Dispositif selon la revendication 5, caractérisé en ce qu'il comporte deux éléments de renfort (5a,5b) symétriquement disposées l'un par rapport à l'autre relativement à l'axe principal longitudinal (XX') du dossier (2) en formant la pièce de renfort (5), et dont la partie inférieure respective (1 1 a,1 1 b) est solidaire d'un élément d'articulation (9a,9b), en ce que les deux éléments d'articulation (9a,9b) sont symétriquement disposés l'un par rapport à l'autre relativement à l'axe principal longitudinal (XX') du dossier (2) en formant la pièce d'articulation (9,29), et en ce que les deux éléments d'articulation (9a,9b) définissent le premier système d'entraînement en pivotement du dossier (14) par l'occupant du siège, ainsi que le second système d'entraînement en pivotement du dossier (15) pour libérer l'accès aux places arrières du véhicule automobile, le second système d'entraînement en pivotement du dossier (15) étant disposé au dessus du premier système d'entraînement en pivotement du dossier (14). 6. Device according to claim 5, characterized in that it comprises two reinforcing elements (5a, 5b) symmetrically arranged relative to one another relative to the main longitudinal axis (XX ') of the backrest (2 ) forming the room reinforcement (5), and whose respective lower part (1 1 a, 1 1 b) is integral with a hinge element (9a, 9b), in that the two hinge elements (9a, 9b) are symmetrically arranged relative to one another relative to the longitudinal main axis (XX ') of the backrest (2) forming the articulation piece (9,29), and in that the two elements of articulation (9a, 9b) define the first drive system for pivoting the backrest (14) by the occupant of the seat, and the second drive system for pivoting the backrest (15) to release access to the rear seats of the motor vehicle, the second pivoting drive system of the backrest (15) being disposed above the first pivoting drive system of the backrest (14).
7. Dispositif selon la revendication 5, caractérisé en ce que la pièce de renfort (25) présente deux zones supérieures (25a,25b) symétriquement disposées l'une par rapport à l'autre relativement à l'axe principal longitudinal (ΧΧΊ ) du dossier (23), et en ce que la partie inférieure (31 ) de la pièce de renfort (25) est solidarisée à la pièce d'articulation (29) qui est tubulaire et qui définit le premier système d'entraînement en pivotement du dossier (34) par l'occupant du siège (23) ainsi que le second système d'entraînement en pivotement du dossier (35) pour libérer l'accès aux places arrières du véhicule automobile, les premier (34) et second (35) systèmes d'entraînement en pivotement du dossier (23) étant coaxialement disposés l'un par rapport à l'autre dans la pièce d'articulation tubulaire (29). 7. Device according to claim 5, characterized in that the reinforcing piece (25) has two upper zones (25a, 25b) symmetrically arranged relative to one another relative to the longitudinal main axis (ΧΧΊ) of the backrest (23), and in that the lower part (31) of the reinforcing piece (25) is secured to the hinge piece (29) which is tubular and which defines the first drive system in pivoting of the backrest (34) by the occupant of the seat (23) and the second drive system pivoting backrest (35) to release access to the rear seats of the motor vehicle, the first (34) and second (35) systems pivoting drive of the backrest (23) being coaxially arranged relative to each other in the tubular joint piece (29).
8. Siège de véhicule automobile caractérisé en ce qu'il comporte au moins un dispositif d'articulation selon l'une quelconque des revendications 1 à 7 et en ce que l'élément de renfort (5,25) du dit dispositif d'articulation est surmoulé sur le dossier (3,23) de siège (1 ,21 ) qui est réalisé en matériau composite. 8. Motor vehicle seat characterized in that it comprises at least one hinge device according to any one of claims 1 to 7 and in that the reinforcing element (5,25) of said hinge device is overmoulded on the backrest (3,23) of seat (1,21) which is made of composite material.
9. Siège selon la revendication 8, caractérisé en ce que le matériau composite dans lequel est réalisé le dossier (3,23) de siège (1 ,21 ) est à base de polyamide. 9. Seat according to claim 8, characterized in that the composite material in which the backrest (3,23) seat (1, 21) is made is based on polyamide.
10. Siège selon l'une quelconque des revendications 8 et 9, caractérisé en ce que les deux bords latéraux opposés (37a,37b) du dossier (3,23) comportent chacun un évidement latéral au moins au niveau de la partie inférieure (8,28) du dossier (3,23) libérant au moins les espaces latéraux opposés de la partie inférieure (8,28) du dossier (3,23) sur toute la largeur du dit dossier (3,23). 10. Seat according to any one of claims 8 and 9, characterized in that the two opposite side edges (37a, 37b) of the backrest (3,23) comprise each having a lateral recess at least at the lower part (8,28) of the backrest (3,23) releasing at least the opposite lateral spaces of the lower part (8,28) of the backrest (3,23) over the entire width of said file (3,23).
EP12794397.5A 2011-11-07 2012-10-29 Improved articulation device for articulating a motor vehicle seat backrest and associated vehicle seat Withdrawn EP2776277A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1160078A FR2982207B1 (en) 2011-11-07 2011-11-07 IMPROVED JOINT DEVICE FOR A MOTOR VEHICLE SEAT BACK AND ASSOCIATED VEHICLE SEAT
PCT/FR2012/052493 WO2013068674A1 (en) 2011-11-07 2012-10-29 Improved articulation device for articulating a motor vehicle seat backrest and associated vehicle seat

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EP2776277A1 true EP2776277A1 (en) 2014-09-17

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CN (1) CN104039593A (en)
FR (1) FR2982207B1 (en)
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FR2999126B1 (en) * 2012-12-07 2014-12-26 Faurecia Sieges Dautomobile SEAT FRAME AND METHOD FOR MANUFACTURING THE SAME
US10214126B2 (en) * 2014-05-27 2019-02-26 Adient Luxembourg Holding S.a.r.l. Seat back of hybrid construction and a process for forming a seat back of hybrid construction
CN110435501B (en) * 2019-08-23 2021-08-27 延锋汽车饰件***有限公司 Automobile seat and automobile comprising same
DE102019134704A1 (en) * 2019-12-17 2021-06-17 Grammer Aktiengesellschaft Vehicle seat

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DE2244313A1 (en) * 1972-09-09 1974-03-21 Ymos Metallwerke Wolf & Becker VEHICLE SEAT
US5253924A (en) * 1991-06-11 1993-10-19 Concept Analysis Corporation Blow molded seat back with integral reinforcing member
BRPI1006285A2 (en) * 2009-03-02 2016-04-19 Faurecia Automotive Seating seat back, seat assembly and method of forming a seat back
FR2949398B1 (en) * 2009-09-03 2011-08-26 Faurecia Sieges Automobile VEHICLE SEAT AND METHOD FOR MANUFACTURING THE SAME
CN201610089U (en) * 2009-12-28 2010-10-20 宁波均胜工业有限公司 Hinge for hinging seat back and base of vehicle child safety seat

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FR2982207A1 (en) 2013-05-10
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WO2013068674A1 (en) 2013-05-16

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