FR2775449A1 - SAFETY SEAT FOR A VEHICLE, PARTICULARLY A MOTOR VEHICLE - Google Patents
SAFETY SEAT FOR A VEHICLE, PARTICULARLY A MOTOR VEHICLE Download PDFInfo
- Publication number
- FR2775449A1 FR2775449A1 FR9802470A FR9802470A FR2775449A1 FR 2775449 A1 FR2775449 A1 FR 2775449A1 FR 9802470 A FR9802470 A FR 9802470A FR 9802470 A FR9802470 A FR 9802470A FR 2775449 A1 FR2775449 A1 FR 2775449A1
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- France
- Prior art keywords
- seat
- safety
- safety seat
- vehicle
- backrest
- 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.)
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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
- B60N2/24—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
- B60N2/4221—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 front
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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
- B60N2/24—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
- B60N2/42736—Seats or parts thereof displaced during a crash involving substantially rigid displacement of the whole seat
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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
- B60N2/24—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
- B60N2/42754—Seats or parts thereof displaced during a crash involving substantially rigid displacement of the cushion
- B60N2/42763—Seats or parts thereof displaced during a crash involving substantially rigid displacement of the cushion with anti-submarining systems
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
Description
SIEGE DE SECURITE POUR VEHICULE,
NOTAMMENT AUTOMOBILE
La présente invention concerne un siège de sécurité pour véhicule, notamment automobile
Les sièges de véhicule, notamment les sièges avant de véhicule automobile, comprennent généralement un châssis solidaire de la structure du véhicule, ce châssis supportant une assise et un dossier, ainsi qu'un appui-tête porté par, ou solidaire du dossier. Ces différentes parties du siège peuvent être réglables entre elles pour s'adapter à la morphologie de l'utilisateur.SAFETY SEAT FOR VEHICLE,
ESPECIALLY AUTOMOTIVE
The present invention relates to a safety seat for a vehicle, in particular a motor vehicle
Vehicle seats, in particular the front seats of a motor vehicle, generally comprise a chassis secured to the structure of the vehicle, this chassis supporting a seat and a backrest, as well as a headrest carried by, or secured to the backrest. These different parts of the seat can be adjustable together to adapt to the morphology of the user.
L'assise, le dossier et l'appui-tête sont, d'une manière générale, constitués d'une structure supportant des coussins élastiques éventuellement recouverts d'une enveloppe. Ces coussins peuvent être supportés par des nappes élastiques accrochés à la structure du siège, ou par des coques constituant cette structure. The seat, the backrest and the headrest generally consist of a structure supporting elastic cushions, possibly covered with an envelope. These cushions can be supported by elastic sheets attached to the seat structure, or by shells constituting this structure.
Cette configuration donne généralement satisfaction en ce qui concerne le confort d'utilisation. II n'en va pas de même en ce qui concerne la sécurité. This configuration generally gives satisfaction with regard to the comfort of use. The same is not true of security.
En effet, sous l'effet d'une brusque accélération vers l'avant tendant à enfoncer l'occupant dans son siège, comme lors d'un choc depuis l'arrière d'un véhicule automobile, ces sièges ont tendance à réagir à la manière d'un ressort. Ils emmagasinent l'énergie du choc sous forme d'énergie potentielle, et la restituent immédiatement après sous forme d'énergie cinétique en projetant vers l'avant les différentes parties du corps de l'occupant du siège. In fact, under the effect of a sudden forward acceleration tending to push the occupant into his seat, as during an impact from the rear of a motor vehicle, these seats tend to react to the way of a spring. They store the energy of the shock in the form of potential energy, and restore it immediately afterwards in the form of kinetic energy by projecting forward the different parts of the body of the seat occupant.
Ces effets de rebond peuvent avoir des conséquences graves sur cet occupant, notamment au niveau du rachis cervical.These rebound effects can have serious consequences on this occupant, particularly in the cervical spine.
On rencontre un inconvénient supplémentaire lorsque les sièges sont réglables. En effet, le réglage peut dans ce cas ne pas être effectué de façon optimale du point de vue de la sécurité. En particulier, toujours dans le domaine de l'automobile, I'appui-tête peut se trouver trop bas et/ou trop loin de la tête de l'utilisateur. En cas de choc arrière, cette dernière est alors violemment projetée en arrière avec les mêmes risques que précédemment. There is an additional disadvantage when the seats are adjustable. In fact, the adjustment may not be carried out in an optimal manner from the point of view of safety. In particular, still in the automotive field, the headrest may be too low and / or too far from the user's head. In the event of a rear impact, the latter is then violently thrown back with the same risks as before.
Par ailleurs, les deux inconvénients précités peuvent se combiner lorsque le torse de l'occupant du siège est projeté vers l'avant par effet de rebond alors que sa tête est encore dans une phase d'enfoncement dans la zone d'appui-tête. Furthermore, the two aforementioned drawbacks can be combined when the torso of the seat occupant is thrown forward by rebound effect while his head is still in a phase of depression in the headrest area.
Enfin, dans les chocs à grande vitesse, I'effort exercé par le dos de l'occupant peut être suffisant pour provoquer un fléchissement du dossier du siège. Le corps de l'occupant peut ainsi être amené à monter le long du dossier de sorte que sa tête, se trouvant au-dessus de la zone d'appui, n'est plus soutenue. Finally, in high speed impacts, the force exerted by the occupant's back may be sufficient to cause the seat backrest to flex. The body of the occupant can thus be brought up along the backrest so that his head, being above the support area, is no longer supported.
La présente invention vise à pallier ces inconvénients. The present invention aims to overcome these drawbacks.
A cet effet, I'invention a pour objet un siège de sécurité pour véhicule, notamment automobile, possédant au moins une assise et un dossier, caractérisé par le fait qu'il comprend des moyens agencés pour déplacer, lors d'une accélération notamment due à un choc et sous l'effet de l'inertie d'un occupant du siège, au moins la surface du dossier ou la surface de l'assise en contact avec cet occupant, de manière non élastique pour absorber une partie de l'énergie du choc, et de façon à donner à ladite surface une configuration de sécurité. To this end, the invention relates to a safety seat for a vehicle, in particular a motor vehicle, having at least one seat and a backrest, characterized in that it comprises means designed to move, during an acceleration notably due at a shock and under the effect of the inertia of an occupant of the seat, at least the surface of the backrest or the surface of the seat in contact with this occupant, in a non-elastic manner to absorb part of the energy shock, and so as to give said surface a safety configuration.
On observera en premier lieu que l'on entend par déplacement, non seulement un déplacement d'ensemble de la surface concernée, mais également des déplacements relatifs de ses différentes parties, c'est-à-dire des déformations de cette surface. It will first be observed that displacement is understood to mean not only an overall displacement of the surface concerned, but also relative displacements of its different parts, that is to say deformations of this surface.
Ainsi donc, lors d'un choc, ou plus généralement d'une accélération, le déplacement ou la déformation non élastique de la surface d'appui de l'occupant sous l'effet de l'inertie de ce dernier, a pour première conséquence une absorption irréversible d'une partie de l'énergie du choc. On limite ou on supprime ainsi les rebonds néfastes. Thus, in the event of an impact, or more generally of an acceleration, the inelastic displacement or deformation of the bearing surface of the occupant under the effect of the inertia of the latter, has the first consequence irreversible absorption of part of the shock energy. This limits or eliminates harmful rebounds.
Par ailleurs, ce même mouvement entraîne une mise du siège en configuration de sécurité. Dans cette configuration, les positions de l'assise, du dossier et éventuellement de l'appui-tête, préalablement adoptées sur la seule base du confort, sont optimisées en vue de la sécurité de l'occupant du siège. Furthermore, this same movement brings the seat into safety configuration. In this configuration, the positions of the seat, the backrest and possibly the headrest, previously adopted on the sole basis of comfort, are optimized with a view to the safety of the seat occupant.
Dans un mode de réalisation particulier, le déplacement comprend un recul du dossier du siège. In a particular embodiment, the displacement comprises a retreat of the seat back.
Egalement dans un mode de réalisation particulier, applicable notamment dans le domaine de l'automobile, le déplacement comprend un redressement du dossier du siège. Also in a particular embodiment, applicable in particular in the automotive field, the displacement comprises a straightening of the seat back.
On évite ainsi le glissement vers le haut de l'occupant, I'amenant dans une position où sa tête dépasse l'appui-tête et ne peut donc pas être soutenue. This avoids the upward sliding of the occupant, bringing him into a position where his head exceeds the headrest and therefore cannot be supported.
Plus particulièrement, le redressement du dossier du siège peut consister en un pivotement du dossier autour d'un axe transversal sensiblement horizontal, situé au-dessous du niveau de l'appui-tête. More particularly, the straightening of the seat backrest may consist of a pivoting of the backrest around a substantially horizontal transverse axis, located below the level of the headrest.
Ainsi, le redressement du siège s'accompagne d'un rapprochement de l'appui-tête de la tête du passager, et par conséquent d'une diminution de la course libre de la tête avant son interception par l'appui-tête. En outre, la partie basse du dossier du siège s'éloigne du tablier avant du véhicule. Or, un choc arrière est souvent suivi d'un choc avant, le véhicule étant projeté sur celui qui le précède. Le recul de la partie basse du dossier, et donc du bassin du passager, éloigne ses pieds du tablier et ses genoux de la planche de bord. La sécurité est ici encore améliorée. Thus, the straightening of the seat is accompanied by an approximation of the headrest of the passenger's head, and consequently of a reduction in the free stroke of the head before it is intercepted by the headrest. In addition, the lower part of the seat back moves away from the front apron of the vehicle. However, a rear impact is often followed by a front impact, the vehicle being projected onto the one in front. The recoil of the lower part of the backrest, and therefore of the passenger's pelvis, moves his feet away from the apron and his knees from the dashboard. Security is further improved here.
Avantageusement, le déplacement peut également comprendre une élévation du dossier du siège. Advantageously, the movement can also include an elevation of the seat back.
Ce mouvement favorise comme les précédents l'efficacité de l'appuitête en empêchant la tête de l'utilisateur du siège de s'élever au-dessus de ce dernier. Like the previous movements, this movement promotes the effectiveness of the head restraint by preventing the head of the seat user from rising above it.
Egalement selon un mode de réalisation particulier de l'invention, le déplacement précité comprend un recul de l'assise du siège, facilitant le recul du dossier. Also according to a particular embodiment of the invention, the aforementioned displacement comprises a retreat of the seat cushion, facilitating the retreat of the backrest.
Le déplacement peut en outre comprendre un abaissement de l'assise du siège. The displacement may further include lowering the seat cushion.
Ce dernier mouvement correspond à un relèvement du dossier et procure sensiblement les mêmes effets. This last movement corresponds to a raising of the backrest and provides substantially the same effects.
On peut également avantageusement prévoir que le déplacement précité comprend un resserrement des parties latérales d'au moins l'assise ou le dossier du siège. One can also advantageously provide that the aforementioned movement comprises a tightening of the lateral parts of at least the seat or the seat back.
L'occupant du siège se trouve ainsi mieux maintenu en cas de choc décalé. The seat occupant is thus better maintained in the event of an offset impact.
Les divers déplacements envisagés ci-dessus peuvent être réalisés par tous moyens convenables. On verra ci-après que des systèmes mécaniques comprenant des biellettes de guidage et des freins peuvent s'avérer satisfaisant. Ils présentent l'avantage de pouvoir être réversibles, et donc utilisables de nouveau après un choc au cours duquel ils ont été sollicités, après réarmement. The various displacements envisaged above can be carried out by any suitable means. It will be seen below that mechanical systems comprising guide rods and brakes may prove to be satisfactory. They have the advantage of being able to be reversible, and therefore usable again after an impact during which they were stressed, after rearming.
Mais on peut également envisager d'utiliser des systèmes destructibles tels que des sacs d'air susceptibles d'éclater, ou des volumes de mousse rigide cloisonnée susceptibles de se détruire, sous la pression de l'occupant du siège lorsque celui-ci est soumis à une forte accélération. However, it is also possible to envisage using destructible systems such as air bags capable of bursting, or volumes of rigid partitioned foam capable of destroying themselves, under the pressure of the occupant of the seat when the latter is subjected to a strong acceleration.
Dans un mode de réalisation particulier, le déplacement est le résultat d'un glissement des moyens de réglage du siège. In a particular embodiment, the displacement is the result of a sliding of the seat adjustment means.
On décrira maintenant, à titre d'exemple non limitatif, un mode de réalisation particulier de l'invention, en référence aux dessins schématiques annexés dans lesquels:
- la figure 1 est une vue en perspective arrachée depuis l'arrière d'un siège selon l'invention;
- la figure 2 est une vue de côté en coupe de ce siège en utilisation normale;
- la figure 2a est une vue à plus grande échelle d'un détail de la figure 2;
- la figure 3 est une vue similaire à celle de la figure 2 dans une première phase de fonctionnement à la suite d'un choc;
- la figure 4 est une vue similaire à celles des figures 2 et 3 dans une deuxième phase de fonctionnement à la suite du choc;
- la figure 4a est une vue similaire à celle de la figure 2a dans la phase de fonctionnement de la figure 4;
- la figure 5a illustre un autre mode de réalisation de l'invention, en fonctionnement normal; et
- la figure 5b est une vue similaire à celle de la figure 5a, après un choc.A particular embodiment of the invention will now be described, by way of nonlimiting example, with reference to the appended schematic drawings in which:
- Figure 1 is a perspective view cut away from the rear of a seat according to the invention;
- Figure 2 is a side sectional view of this seat in normal use;
- Figure 2a is an enlarged view of a detail of Figure 2;
- Figure 3 is a view similar to that of Figure 2 in a first phase of operation following an impact;
- Figure 4 is a view similar to those of Figures 2 and 3 in a second phase of operation following the shock;
- Figure 4a is a view similar to that of Figure 2a in the operating phase of Figure 4;
- Figure 5a illustrates another embodiment of the invention, in normal operation; and
- Figure 5b is a view similar to that of Figure 5a, after an impact.
Le siège de véhicule automobile de la figure 1 comprend une base i formée d'un cadre métallique rigide. La base 1 est montée sur des rails longitudinaux 2 solidaires de la caisse 3 du véhicule pour son réglage avant/arrière. The motor vehicle seat of Figure 1 comprises a base i formed of a rigid metal frame. The base 1 is mounted on longitudinal rails 2 secured to the body 3 of the vehicle for its front / rear adjustment.
La base 1 supporte une structure d'assise 4 par l'intermédiaire de deux couples de biellettes inclinées avant 5 et arrière 6. La structure 4 possède des glissières 7 qui reçoivent une platine 8 sur laquelle est fixé le coussin d'assise 9, par exemple directement ou par l'intermédiaire d'une nappe élastique. The base 1 supports a seat structure 4 by means of two pairs of inclined front 5 and rear links 6. The structure 4 has slides 7 which receive a plate 8 on which the seat cushion 9 is fixed, by example directly or through an elastic sheet.
La hauteur et l'assiette de l'assise sont réglables par déformation des quadrilatères irréguliers constitués par les biellettes 5 et 6, la structure 4 et la base 1. Cette déformation est contrôlée par un vérin mécanique 10 qui comporte un partie 11 déformable irréversiblement pour absorber de l'énergie pendant sa déformation. The height and the seat plate are adjustable by deformation of the irregular quadrilaterals constituted by the rods 5 and 6, the structure 4 and the base 1. This deformation is controlled by a mechanical actuator 10 which comprises a part 11 which is irreversibly deformable for absorb energy during its deformation.
La structure 4 comporte des moyens 12 d'articulation et de blocage autour d'un axe 13 transversal au siège, des extrémités d'un arceau 14 en forme générale de U inversé. L'arceau 14 constitue une partie de la structure du dossier du siège. The structure 4 comprises means 12 for articulation and locking around an axis 13 transverse to the seat, the ends of a hoop 14 in the general shape of an inverted U. The arch 14 constitutes a part of the structure of the seat back.
La barre transversale supérieure 15 de l'arceau 14 constitue un axe qui traverse des lumières allongées sensiblement verticalement 16 formées dans la partie supérieure d'une armature de dossier 17. La barre 15 et les lumières allongées 16 permettent des mouvements relatifs de rotation et de translation de l'arceau 14 et de l'armature 17. L'armature 17 est ici réalisée en matière plastique, ce qui est rendu possible par la diminution et une meilleure répartition des efforts. The upper transverse bar 15 of the arch 14 constitutes an axis which passes through substantially vertically elongated openings 16 formed in the upper part of a backrest frame 17. The bar 15 and the elongated openings 16 allow relative movements of rotation and translation of the arch 14 and the frame 17. The frame 17 is here made of plastic, which is made possible by the reduction and a better distribution of forces.
L'armature 17 est articulée à sa partie inférieure à une extrémité d'une bielle 18 sur un axe 19. L'autre extrémité de la bielle 18 est articulée sur un axe solidaire de l'arceau, qui coïncide ici avec l'axe 13. The frame 17 is articulated at its lower part at one end of a connecting rod 18 on an axis 19. The other end of the connecting rod 18 is articulated on an axis integral with the arch, which here coincides with the axis 13 .
En fonctionnement normal, la ligne passant par les axes 13 et 19 de la bielle 18 et celle passant par les axes 15 et 19 forment un angle obtus presque plat. On verra que cet angle peut se fermer par rapprochement des axes 15 et 19. In normal operation, the line passing through the axes 13 and 19 of the connecting rod 18 and the line passing through the axes 15 and 19 form an almost flat obtuse angle. We will see that this angle can close by bringing axes 15 and 19 closer together.
L'armature 17 du dossier supporte une armature 20 d'appui-tête. Les armatures 17 et 20 supportent enfin des coussins 21 en mousse. The frame 17 of the backrest supports a headrest frame 20. The frames 17 and 20 finally support foam cushions 21.
L'ensemble de pièces constitué par l'arceau 14, L'armature de dossier 17 et la bielle 18 forme ainsi un triangle déformable sous la poussée du dos de l'occupant, par l'intermédiaire des coussins 21. Cette déformation est subordonnée au patinage d'un frein tournant 22 à disques dont un ensemble de disques est solidaire en rotation de la bielle 18, et l'autre est solidaire en rotation de l'arceau 14. L'axe du frein 22 coïncide ici avec l'axe 13 de l'arceau. The set of parts constituted by the arch 14, the back frame 17 and the connecting rod 18 thus form a deformable triangle under the thrust of the back of the occupant, by means of the cushions 21. This deformation is subject to slippage of a rotating brake 22 with discs, one set of discs being fixed in rotation with the connecting rod 18, and the other is being fixed in rotation with the arch 14. The axis of the brake 22 coincides here with the axis 13 of the roll bar.
Enfin, la platine 8 est ici maintenue en position relative par rapport au dossier par l'intermédiaire d'un levier coudé 23. L'une des extrémités du levier 23 est articulée sur la platine 8 par un axe 24 et son autre extrémité est reliée à une partie de l'armature coïncidant ici avec l'axe 19. Ainsi, le réglage en
Inclinaison du dossier provoque un mouvement de translation de l'assise qui ajoute un supplément de confort à l'utilisateur du siège.Finally, the plate 8 is here kept in relative position relative to the backrest by means of an angled lever 23. One of the ends of the lever 23 is articulated on the plate 8 by an axis 24 and its other end is connected to a part of the armature coinciding here with the axis 19. Thus, the adjustment in
Inclination of the backrest causes a translational movement of the seat which adds extra comfort to the seat user.
On voit à la figure 3 que l'appui du dos du passager à provoqué le patinage du frein 22 et donc une absorption d'énergie. II en est résulté une fermeture du triangle constitué par l'arceau 14, L'armature de dossier 17 et la bielle 18. Le coussin de dossier a reculé en zone lombaire tandis que la zone d'appui-tête a monté et avancé. We see in Figure 3 that the support of the back of the passenger caused the brake 22 to slip and therefore an energy absorption. This resulted in a closure of the triangle formed by the arch 14, the back frame 17 and the connecting rod 18. The back cushion fell back in the lumbar region while the headrest area rose and advanced.
On observera que le coussin d'assise 9 supporté par la platine 8 a reculé et est descendu suivant une trajectoire déterminée par les glissières 7. It will be observed that the seat cushion 9 supported by the plate 8 has receded and descended along a path determined by the slides 7.
Ce mouvement est autorisé par le recul du levier coudé 23 entrainé par la rotation de la bielle 18.This movement is authorized by the recoil of the bent lever 23 driven by the rotation of the connecting rod 18.
La figure 4 représente la position d'enfoncement maximum du siège. Figure 4 shows the maximum driving position of the seat.
La partie Il du vérin 10 s'est écrasée ce qui a eu pour effet de provoquer un recul et une descente de la structure d'assise 4 ainsi que son basculement, par déformation du quadrilatère constitué par la base 1, la structure 4 et les biellettes 5 et 6. Ce mouvement est déterminé par l'implantation et les longueurs de ces biellettes.Part II of the jack 10 is crushed, which has had the effect of causing the seat structure 4 to recede and descend as well as its tilting, by deformation of the quadrilateral formed by the base 1, the structure 4 and the links 5 and 6. This movement is determined by the layout and the lengths of these links.
En cas de choc depuis l'arrière, le siège selon l'invention procure donc:
- un appui-tête plus haut et plus proche de la tête,
- un meilleure position du dossier limitant le risque de voir l'occupant du siège glisser vers le haut,
- un éloignement des zones susceptibles de venir en contact avec la tête ou les jambes de l'occupant.In the event of an impact from the rear, the seat according to the invention therefore provides:
- a higher headrest closer to the head,
- a better position of the backrest limiting the risk of the seat occupant sliding up,
- moving away from areas likely to come into contact with the occupant's head or legs.
Dans le mode de réalisation des figures 5a et 5b, le coussin du siège est composé d'un partie centrale 30 et de deux parties latérales 31. Les liaisons entre la partie 30 et les parties 31 sont suffisamment souples pour permettre un resserrement des parties latérales. In the embodiment of FIGS. 5a and 5b, the seat cushion is composed of a central part 30 and two lateral parts 31. The connections between the part 30 and the parts 31 are flexible enough to allow the lateral parts to be tightened .
L'armature 17 comporte deux ailes 32 qui forment l'armature des parties latérales 31 et qui peuvent elles aussi se resserrer vers le plan de symétrie du siège. Ces ailes sont en appui sur les montants de l'arceau 14, de telle sorte que le mouvement relatif vers l'arrière de l'armature 17 par rapport à l'arceau 14 provoque le resserrement des ailes 32 et donc des parties latérales 31. The frame 17 comprises two wings 32 which form the frame of the lateral parts 31 and which can also tighten towards the plane of symmetry of the seat. These wings are supported on the uprights of the arch 14, so that the relative movement towards the rear of the frame 17 relative to the arch 14 causes the wings 32 and therefore the side parts 31 to tighten.
L'occupant du siège bénéficie donc d'un maintien accru en cas de choc arrière décalé. The seat occupant therefore benefits from increased support in the event of an offset rear impact.
Claims (9)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9802470A FR2775449B1 (en) | 1998-03-02 | 1998-03-02 | SAFETY SEAT FOR A VEHICLE, PARTICULARLY A MOTOR VEHICLE |
| PCT/FR1999/000425 WO1999044855A1 (en) | 1998-03-02 | 1999-02-25 | Vehicle safety seat, in particular for motor vehicle |
| EP99937908A EP0979180A1 (en) | 1998-03-02 | 1999-02-25 | Vehicle safety seat, in particular for motor vehicle |
| AU32562/99A AU3256299A (en) | 1998-03-02 | 1999-02-25 | Vehicle safety seat, in particular for motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9802470A FR2775449B1 (en) | 1998-03-02 | 1998-03-02 | SAFETY SEAT FOR A VEHICLE, PARTICULARLY A MOTOR VEHICLE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2775449A1 true FR2775449A1 (en) | 1999-09-03 |
| FR2775449B1 FR2775449B1 (en) | 2000-05-19 |
Family
ID=9523511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9802470A Expired - Fee Related FR2775449B1 (en) | 1998-03-02 | 1998-03-02 | SAFETY SEAT FOR A VEHICLE, PARTICULARLY A MOTOR VEHICLE |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0979180A1 (en) |
| AU (1) | AU3256299A (en) |
| FR (1) | FR2775449B1 (en) |
| WO (1) | WO1999044855A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2791018A1 (en) * | 1999-03-15 | 2000-09-22 | Nhk Spring Co Ltd | DEVICE FOR PREVENTING A VEHICLE SEAT OCCUPANT FROM SLIDING FORWARD UNDER A SEAT BELT IN THE EVENT OF AN IMPACT |
| EP0963872A3 (en) * | 1998-06-09 | 2001-01-17 | Volkswagen Aktiengesellschaft | Vehicle seat with limited rear displacement of the seat components by energy absorption in case of a rear impact |
| EP1288061A1 (en) * | 2001-09-01 | 2003-03-05 | Keiper GmbH & Co. | Vehicle seat, particularly automotive vehicle seat |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004039812B4 (en) * | 2003-09-02 | 2013-02-07 | Dietmar Fißl | Lightweight construction for transport seats |
| DE102009002825A1 (en) | 2009-05-05 | 2010-11-11 | Sitech Sitztechnik Gmbh | Vehicle seat has seat part and backrest with head restraint, where forces resulting from inertia of passenger seated on vehicle seat are exerted on backrest or head restraint during front or rear crash of vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2419079A1 (en) * | 1978-03-07 | 1979-10-05 | Repa Feinstanzwerk Gmbh | DEVICE FOR TENSIONING A MOTOR VEHICLE SEAT BELT |
| DE4238549A1 (en) * | 1992-11-14 | 1994-05-19 | Daimler Benz Ag | Vehicle seat back rest frame - has thin walled, deformable structure and is made as light metal die casting with components cast directly onto frame |
| US5437494A (en) * | 1992-10-29 | 1995-08-01 | Life Force Associates, L.P. | Rearward moving seat |
| US5490706A (en) * | 1995-03-22 | 1996-02-13 | Totani; Hideo | Safety system for occupant of an automotive vehicle |
| WO1997010117A1 (en) * | 1995-09-14 | 1997-03-20 | Autoliv Development Ab | A seat for use in a vehicle |
-
1998
- 1998-03-02 FR FR9802470A patent/FR2775449B1/en not_active Expired - Fee Related
-
1999
- 1999-02-25 EP EP99937908A patent/EP0979180A1/en not_active Withdrawn
- 1999-02-25 AU AU32562/99A patent/AU3256299A/en not_active Abandoned
- 1999-02-25 WO PCT/FR1999/000425 patent/WO1999044855A1/en not_active Application Discontinuation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2419079A1 (en) * | 1978-03-07 | 1979-10-05 | Repa Feinstanzwerk Gmbh | DEVICE FOR TENSIONING A MOTOR VEHICLE SEAT BELT |
| US5437494A (en) * | 1992-10-29 | 1995-08-01 | Life Force Associates, L.P. | Rearward moving seat |
| DE4238549A1 (en) * | 1992-11-14 | 1994-05-19 | Daimler Benz Ag | Vehicle seat back rest frame - has thin walled, deformable structure and is made as light metal die casting with components cast directly onto frame |
| US5490706A (en) * | 1995-03-22 | 1996-02-13 | Totani; Hideo | Safety system for occupant of an automotive vehicle |
| WO1997010117A1 (en) * | 1995-09-14 | 1997-03-20 | Autoliv Development Ab | A seat for use in a vehicle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0963872A3 (en) * | 1998-06-09 | 2001-01-17 | Volkswagen Aktiengesellschaft | Vehicle seat with limited rear displacement of the seat components by energy absorption in case of a rear impact |
| FR2791018A1 (en) * | 1999-03-15 | 2000-09-22 | Nhk Spring Co Ltd | DEVICE FOR PREVENTING A VEHICLE SEAT OCCUPANT FROM SLIDING FORWARD UNDER A SEAT BELT IN THE EVENT OF AN IMPACT |
| EP1288061A1 (en) * | 2001-09-01 | 2003-03-05 | Keiper GmbH & Co. | Vehicle seat, particularly automotive vehicle seat |
| US6752455B2 (en) | 2001-09-01 | 2004-06-22 | Keiper Gmbh & Co. Kg | Vehicle seat, especially a motor vehicle seat |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2775449B1 (en) | 2000-05-19 |
| AU3256299A (en) | 1999-09-20 |
| WO1999044855A1 (en) | 1999-09-10 |
| EP0979180A1 (en) | 2000-02-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |
Effective date: 20071130 |