FR3002501A1 - Seat for car, has shell connected to frame using flexible connection elements or blades that are bent in operational configuration of shell so as to form non-rigid elastic connection between shell and reinforcement - Google Patents
Seat for car, has shell connected to frame using flexible connection elements or blades that are bent in operational configuration of shell so as to form non-rigid elastic connection between shell and reinforcement Download PDFInfo
- Publication number
- FR3002501A1 FR3002501A1 FR1351804A FR1351804A FR3002501A1 FR 3002501 A1 FR3002501 A1 FR 3002501A1 FR 1351804 A FR1351804 A FR 1351804A FR 1351804 A FR1351804 A FR 1351804A FR 3002501 A1 FR3002501 A1 FR 3002501A1
- Authority
- FR
- France
- Prior art keywords
- shell
- seat
- frame
- connecting element
- blades
- 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.)
- Granted
Links
- 230000002787 reinforcement Effects 0.000 title abstract 2
- 238000013016 damping Methods 0.000 claims abstract description 6
- 239000004033 plastic Substances 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- 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
-
- 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
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/4207—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces
- B60N2/4214—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal
- B60N2/4228—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal due to impact coming from the rear
-
- 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
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/427—Seats or parts thereof displaced during a crash
- B60N2/42727—Seats or parts thereof displaced during a crash involving substantially rigid displacement
- B60N2/42745—Seats or parts thereof displaced during a crash involving substantially rigid displacement of the back-rest
-
- 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
- B60N2/70—Upholstery springs ; Upholstery
- B60N2/72—Attachment or adjustment thereof
Abstract
Description
SI EGE DE VEHI CULE AUTOMOBI LE La présente invention a pour objet un siège de véhicule automobile. 5 Elle concerne en particulier un siège muni d'un dossier comprenant une coque en matière plastique. Il est connu de remplacer la mousse d'un dossier de siège de véhicule automobile par une coque en matière plastique, de manière à réaliser un siège moins onéreux, moins lourd et d'apparence plus fine. La fixation de la coque à 10 l'armature du dossier doit satisfaire à des exigences de confort et de résistance à des tests, notamment des tests de collision et de coup du lapin. Pour fixer la coque à l'armature du dossier, il est connu, tel que décrit par exemple dans le document EP 2 325 040, d'utiliser une liaison mécanique bloquant l'enfoncement de la coque. Un exemple d'un tel siège 1 est illustré à 15 la figure 1. Une armature de dossier 2 est reliée à une coque 3 en matière plastique destinée à supporter le dos du passager. Une liaison mécanique 4 de type rotule relie de chaque côté du dossier 1 la coque 3 à l'armature 2. Cette fixation trop rigide de la coque 3 entraîne un débattement insuffisant de la coque 3 et limite ainsi l'enfoncement du passager dans le siège en cas de 20 choc. En outre, ce type de fixation implique un encombrement accru et des éléments de fixation à la structure du siège. La présente invention vise à remédier à ces inconvénients. L'invention a ainsi pour objet un siège de véhicule automobile, comportant une armature de dossier de siège et une coque permettant l'appui 25 du dos en configuration opérationnelle. Dans le siège selon l'invention, la coque est reliée à l'armature à l'aide d'au moins un élément de liaison flexible disposé de chaque côté du siège, ledit élément de liaison étant fléchi en configuration opérationnelle de la coque, de manière à former une liaison élastique non rigide entre la coque et 30 l'armature. Ainsi, la liaison élastique entre la coque et l'armature autorise un débattement de la coque par flexion, flambage ou retournement de l'élément de liaison.The present invention relates to a motor vehicle seat. It relates in particular to a seat with a backrest comprising a plastic shell. It is known to replace the foam of a motor vehicle seat back by a plastic shell, so as to achieve a less expensive seat, lighter weight and finer appearance. Attachment of the shell to the backrest frame must meet requirements of comfort and resistance to testing, including crash and whiplash tests. To attach the shell to the backrest frame, it is known, as described for example in EP 2 325 040, to use a mechanical connection blocking the depression of the hull. An example of such a seat 1 is illustrated in Figure 1. A backrest frame 2 is connected to a plastic shell 3 for supporting the passenger's back. A mechanical connection 4 of the ball joint type connects on each side of the backrest 1 the shell 3 to the frame 2. This too rigid fixing of the shell 3 causes insufficient clearance of the shell 3 and thus limits the depression of the passenger in the seat in case of shock. In addition, this type of attachment involves increased space and fastening elements to the seat structure. The present invention aims to remedy these disadvantages. The invention thus relates to a motor vehicle seat, comprising a seat back frame and a shell for supporting the back in operational configuration. In the seat according to the invention, the shell is connected to the frame by means of at least one flexible connecting element disposed on each side of the seat, said connecting element being bent in the operational configuration of the shell, to form a non-rigid elastic connection between the shell and the frame. Thus, the elastic connection between the shell and the frame allows a displacement of the shell by bending, buckling or reversal of the connecting element.
Le siège peut comprendre une pluralité d'éléments de liaison comprenant chacun une ou plusieurs lames disposées deux à deux le long de la hauteur du siège. Chaque élément de liaison peut comprendre au moins deux lames 5 reliées entre elles par un moyen d'amortissement. Chaque élément de liaison peut être réalisé en un matériau déformable choisi parmi les métaux, les matériaux composites, et les matières plastiques. La courbure de la coque et la courbure de chaque élément de liaison peuvent être en opposition, par exemple du type concave/convexe. 10 Les extrémités de chaque élément de liaison peuvent être disposées dans une découpe de l'armature de dossier de siège. Les extrémités de chaque élément de liaison peuvent être bloquées par un emboutissage local de l'armature de dossier de siège. Les extrémités de chaque élément de liaison peuvent comprendre un 15 élément d'accrochage à une bordure de l'armature de dossier de siège. Les extrémités de chaque élément de liaison peuvent comprendre un pion de fixation apte à être inséré dans une ouverture de l'armature de dossier de siège. D'autres caractéristiques et avantages de la présente invention 20 apparaîtront à la lecture de la description suivante donnée à titre d'exemple illustratif et non limitatif et faite en référence aux dessins annexés sur lesquels : - la figure 1, déjà décrite, est un vue en coupe horizontale d'un dossier de siège de l'état de la technique, 25 - les figures 2 et 3 sont des vues en coupe horizontale d'un dossier de siège selon l'invention, et - les figures 4 à 7 sont des vues de détail, en coupe horizontale, d'un dossier de siège selon l'invention. Un dossier d'un siège 1 selon l'invention, tel qu'illustré à la figure 2, 30 sur laquelle les éléments identiques à ceux de la figure 1 portent les mêmes références, comprend une armature de dossier 2 reliée à une coque 3 de profil courbe. La coque 3 peut être en matière plastique et est destinée à supporter le dos du passager.The seat may comprise a plurality of connecting elements each comprising one or more blades arranged in pairs along the height of the seat. Each connecting element may comprise at least two blades 5 interconnected by a damping means. Each connecting element may be made of a deformable material selected from metals, composite materials, and plastics. The curvature of the shell and the curvature of each connecting element may be in opposition, for example of the concave / convex type. The ends of each connecting element may be arranged in a cut-out of the seat back frame. The ends of each connecting element can be locked by a local stamping of the seat back frame. The ends of each link member may include a hook member at a border of the seat back frame. The ends of each connecting element may comprise a fixing pin adapted to be inserted into an opening of the seat back frame. Other characteristics and advantages of the present invention will appear on reading the following description given by way of illustrative and nonlimiting example and with reference to the appended drawings in which: FIG. 1, already described, is a view in horizontal section of a seat back of the state of the art, - Figures 2 and 3 are views in horizontal section of a seat back according to the invention, and - Figures 4 to 7 are detailed views, in horizontal section, of a seat back according to the invention. A back of a seat 1 according to the invention, as illustrated in FIG. 2, on which the elements identical to those of FIG. 1 bear the same references, comprises a backrest frame 2 connected to a shell 3 of curved profile. The shell 3 may be plastic and is intended to support the passenger's back.
Une ou plusieurs bandes ou lames 4 déformables relient la coque 3 à l'armature 2 de chaque côté du dossier 1, à savoir à gauche et à droite du dossier 1. Cette liaison élastique à lame 4 unique ou multiple pour bloquer l'enfoncement de la coque plastique 3 supportant le dos de l'occupant peut être réalisée en différents matériaux, par exemple composites, métalliques, ou plastiques, et en particulier dans le même matériau que la coque 3 si elle est en matériau injecté. Chaque lame 4 est de préférence arc-boutée sur la coque 3, réalisant ainsi un effet ressort. Cette liaison souple permet de créer une interface deformable ayant une raideur suffisamment significative pour permettre de soutenir le dos de l'occupant en utilisation normale et filtrer les vibrations transmises par la structure du siège, tout en présentant une raideur faible vis à vis des efforts vus en phase de collision et permettant de maximiser l'insertion de l'occupant en cas de choc arrière.One or more deformable strips or blades 4 connect the shell 3 to the frame 2 on each side of the backrest 1, ie to the left and to the right of the backrest 1. This elastic connection with a single or multiple blade 4 to block the depression of the plastic shell 3 supporting the back of the occupant can be made of different materials, for example composites, metal or plastic, and in particular in the same material as the shell 3 if it is injected material. Each blade 4 is preferably abutted on the shell 3, thus achieving a spring effect. This flexible connection makes it possible to create a deformable interface having a sufficiently significant stiffness to allow to support the back of the occupant in normal use and to filter the vibrations transmitted by the structure of the seat, while presenting a low stiffness with respect to the efforts seen in collision phase and to maximize the insertion of the occupant in case of rear impact.
Cette architecture permet également de réaliser une mise en place dans la structure du siège sans élément de fixation complémentaire, grâce à une mise en place sous contrainte entre des éléments de structure du siège. Par rapport à un dossier comprenant une liaison mécanique rigide entre la coque et l'armature, le dossier selon l'invention présente les 20 avantages suivants : - il est possible d'intégrer l'élément de liaison directement dans la coque, sans éléments de fixation supplémentaires, - il n'y a pas de limitation du débattement horizontal de la coque par le système de fixation. Le débattement est uniquement limité par l'interaction de 25 la coque sur l'armature car même en cas d'extrême déformation les lames peuvent se retourner, - la fixation n'est plus dans une zone atteignable, car elle est localisée dans les coins des flasques du dossier. L'habillage du dossier est simplifié, il n'y a pas d'obligation d'utilisation d'un cache plastique en partie arrière, 30 - il est possible d'intégrer une grande quantité d'éléments de liaison pour répartir la charge tout le long de la coque. Ceci permet de ne pas limiter verticalement la zone d'implantation de la fixation sur l'armature de dossier.This architecture also makes it possible to implement in the seat structure without additional fastening element, thanks to a placement under stress between structural elements of the seat. With respect to a backrest comprising a rigid mechanical connection between the shell and the armature, the backrest according to the invention has the following advantages: it is possible to integrate the connecting element directly into the shell, without elements of additional fixing, - there is no limitation of the horizontal movement of the hull by the fastening system. The deflection is limited only by the interaction of the shell on the frame because even in the case of extreme deformation the blades can turn over, the attachment is no longer in a reachable area because it is located in the corners flanges of the file. The back cover is simplified, there is no obligation to use a plastic cover at the rear, 30 - it is possible to integrate a large amount of connecting elements to distribute the load while along the hull. This makes it possible not to limit vertically the implantation area of the binding on the backrest frame.
Dans un mode de réalisation illustré à la figure 3, l'élément de liaison 4 comprend deux lames entre lesquelles est disposé un dispositif 5 d'amortissement. Ainsi, l'ajout d'un dissipateur d'énergie permet en plus de l'effet ressort de créer un amortissement. On obtient ainsi une déformation élasto-plastique, et les vibrations sont filtrées. On peut par exemple utiliser un dispositif d'amortissement à frottement visqueux ou sec, ou encore un élastom ère. Les figures 4 à 7 illustrent différents modes de réalisation de la fixation de l'élément de liaison 4 sur l'armature de siège 2.In one embodiment illustrated in Figure 3, the connecting element 4 comprises two blades between which is disposed a damping device 5. Thus, the addition of a dissipator energy allows in addition to the spring effect to create a damping. This produces an elastoplastic deformation, and the vibrations are filtered. For example, a viscous or dry friction damping device or an elastomer may be used. Figures 4 to 7 illustrate different embodiments of the attachment of the connecting element 4 to the seat frame 2.
Dans un premier mode de réalisation, l'extrémité de la lame 4 est insérée et bloquée dans une découpe 21 de l'armature de dossier 2 (figure 4). Dans un deuxième mode de réalisation, la lame 4 est fixée par blocage de son extrémité grâce à un emboutissage local 22 réalisé dans l'armature de dossier 2 (figure 5).In a first embodiment, the end of the blade 4 is inserted and locked in a cutout 21 of the backrest frame 2 (Figure 4). In a second embodiment, the blade 4 is fixed by locking its end by a local stamping 22 made in the backrest frame 2 (Figure 5).
Dans un troisième mode de réalisation, l'extrémité de la lame 4 est fixée par un clip d'accroche 41 sur un bord de l'armature de dossier 2 (figure 6). Dans un quatrième mode de réalisation, l'extrémité de la lame 4 est fixée par un pion de fixation 42 traversant un trou de l'armature de 20 dossier 2 (figure 7). Le pion de fixation peut être en un matériau mou de type caoutchouc rapporté ou surmoulé. Tous ces modes de réalisation présentent l'avantage de proposer des solutions de blocage de la lame sans ajout de pièces (vis/écrous) et en profitant de la forme de la structure de siège. 25In a third embodiment, the end of the blade 4 is fixed by a hooking clip 41 on an edge of the backrest frame 2 (FIG. 6). In a fourth embodiment, the end of the blade 4 is fixed by a fixing pin 42 passing through a hole in the backrest frame 2 (FIG. 7). The fixing pin may be made of a soft material of the attached or overmolded rubber type. All these embodiments have the advantage of providing solutions for locking the blade without adding parts (screws / nuts) and taking advantage of the shape of the seat structure. 25
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1351804A FR3002501B1 (en) | 2013-02-28 | 2013-02-28 | SEAT OF MOTOR VEHICLE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1351804A FR3002501B1 (en) | 2013-02-28 | 2013-02-28 | SEAT OF MOTOR VEHICLE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR3002501A1 true FR3002501A1 (en) | 2014-08-29 |
| FR3002501B1 FR3002501B1 (en) | 2015-03-13 |
Family
ID=48289378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1351804A Expired - Fee Related FR3002501B1 (en) | 2013-02-28 | 2013-02-28 | SEAT OF MOTOR VEHICLE |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR3002501B1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0328137A2 (en) * | 1988-02-12 | 1989-08-16 | Piero Marchino | Springing and wrap-around element for a seat and/or backrest, and seat embodying the same |
| EP0754590A2 (en) * | 1995-07-19 | 1997-01-22 | LEAR CORPORATION ITALIA S.p.A. | Motor-vehicle seat |
| US20030025370A1 (en) * | 2001-07-31 | 2003-02-06 | Johnson Controls Technology Company | Upper back support for a seat |
| DE102011009211A1 (en) * | 2011-01-22 | 2012-07-26 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Clip device for fastening seat shell to seat frame of vehicle seat for motor vehicle, particularly for sliding or rotary mounting, is provided with clip units, where connecting element is provided for connecting two clip units |
-
2013
- 2013-02-28 FR FR1351804A patent/FR3002501B1/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0328137A2 (en) * | 1988-02-12 | 1989-08-16 | Piero Marchino | Springing and wrap-around element for a seat and/or backrest, and seat embodying the same |
| EP0754590A2 (en) * | 1995-07-19 | 1997-01-22 | LEAR CORPORATION ITALIA S.p.A. | Motor-vehicle seat |
| US20030025370A1 (en) * | 2001-07-31 | 2003-02-06 | Johnson Controls Technology Company | Upper back support for a seat |
| DE102011009211A1 (en) * | 2011-01-22 | 2012-07-26 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Clip device for fastening seat shell to seat frame of vehicle seat for motor vehicle, particularly for sliding or rotary mounting, is provided with clip units, where connecting element is provided for connecting two clip units |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3002501B1 (en) | 2015-03-13 |
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