FR2797823A1 - Automobile rear seat with anti-submarining device comprises transverse pivoting bar with perpendicular end rods articulated to a bucket frame - Google Patents

Automobile rear seat with anti-submarining device comprises transverse pivoting bar with perpendicular end rods articulated to a bucket frame Download PDF

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Publication number
FR2797823A1
FR2797823A1 FR9910818A FR9910818A FR2797823A1 FR 2797823 A1 FR2797823 A1 FR 2797823A1 FR 9910818 A FR9910818 A FR 9910818A FR 9910818 A FR9910818 A FR 9910818A FR 2797823 A1 FR2797823 A1 FR 2797823A1
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France
Prior art keywords
seat
bar
submarining
vehicle
floor
Prior art date
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Granted
Application number
FR9910818A
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French (fr)
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FR2797823B1 (en
Inventor
Philippe Rocque
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PSA Automobiles SA
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Peugeot Citroen Automobiles SA
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Publication date
Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Priority to FR9910818A priority Critical patent/FR2797823B1/en
Publication of FR2797823A1 publication Critical patent/FR2797823A1/en
Application granted granted Critical
Publication of FR2797823B1 publication Critical patent/FR2797823B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42Seats 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
    • B60N2/4207Seats 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
    • B60N2/4214Seats 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
    • B60N2/4221Seats 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/30Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats
    • B60N2/3038Cushion movements
    • B60N2/304Cushion movements by rotation only
    • B60N2/3045Cushion movements by rotation only about transversal axis
    • B60N2/305Cushion movements by rotation only about transversal axis the cushion being hinged on the vehicle frame
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/30Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats
    • B60N2/3088Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats characterised by the mechanical link
    • B60N2/309Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats characterised by the mechanical link rods
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42Seats 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
    • B60N2/427Seats or parts thereof displaced during a crash
    • B60N2/42727Seats or parts thereof displaced during a crash involving substantially rigid displacement
    • B60N2/42754Seats or parts thereof displaced during a crash involving substantially rigid displacement of the cushion
    • B60N2/42763Seats or parts thereof displaced during a crash involving substantially rigid displacement of the cushion with anti-submarining systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42Seats 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
    • B60N2/427Seats or parts thereof displaced during a crash
    • B60N2/42772Seats or parts thereof displaced during a crash characterised by the triggering system
    • B60N2/42781Seats or parts thereof displaced during a crash characterised by the triggering system mechanical triggering

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

Abstract

The pivoting seat comprises a transverse horizontal bar (8) pivoting in two vertical support planes (9) which are fixed to the floor. Two connecting rods (10) extend perpendicularly from the end (11) of the bar. Each of the bar ends is articulated to a bucket, forming the rigid seat frame. The anti-submarining bar (13) allows retention under the occupant's thigh of the seat part and is connected to the pivoting bar by two longitudinal rods (14) so that the anti-submarining bar is retracted during tipping of the seat.

Description

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La présente invention concerne une assise de siège arrière de véhicule automobile avec dispositif d'antisoumarinage.  The present invention relates to a rear seat seat of a motor vehicle with anti-submarining device.

Elle se rapporte plus particulièrement à une assise de siège arrière pourvue d'un dispositif à barre antisoumarinage destinée à retenir l'occupant sous cuisse afin de limiter les déplacements exagérés vers l'avant, du bassin de l'occupant du siège lors d'un choc du véhicule, où il est connu que dans une telle situation le corps de celui-ci sanglé sur son siège, se déplace relativement à la ceinture, en particulier par glissement de son bassin le long de l'assise, sous la partie centrale de la ceinture. Une telle barre a donc pour effet de préserver l'occupant de lésions abdominales.  It relates more particularly to a rear seat cushion provided with an anti-submarining bar device intended to retain the occupant under the thigh in order to limit exaggerated forward movements of the pelvis of the occupant of the seat during a impact of the vehicle, where it is known that in such a situation the body of the latter strapped on its seat, moves relatively to the belt, in particular by sliding of its pelvis along the seat, under the central part of the belt. Such a bar therefore has the effect of preserving the occupant from abdominal injuries.

On connaît des assises de siège arrière qui sont constituées d'un réseau de fil en acier formant un panier qui a la forme complémentaire d'une cuvette réalisée dans le plancher du véhicule avec laquelle il coopère en position d'utilisation pour un occupant de l'assise. Une telle forme assure parfaitement la retenue de l'occupant sous cuisse et évite à ce dernier de sous-mariner en cas de choc violent. Cependant, lorsque l'utilisateur du véhicule désire basculer vers l'avant l'assise jusqu'au contact avec le dossier du siège avant puis basculer le dossier arrière sur le plancher afin par exemple de transporter des objets encombrants, il s'avère que le dossier vient en contact avec le haut de la cuvette ne permettant pas d'obtenir un plancher de chargement parfaitement horizontal.  Rear seat seats are known which consist of a network of steel wire forming a basket which has the complementary shape of a bowl produced in the floor of the vehicle with which it cooperates in the position of use for an occupant of the vehicle. 'seated. Such a shape perfectly ensures the restraint of the occupant under the thigh and prevents the latter from submarining in the event of a violent shock. However, when the user of the vehicle wishes to tilt the seat forward until it contacts the back of the front seat and then tilt the rear folder to the floor in order, for example, to transport bulky objects, it turns out that the backrest comes into contact with the top of the bowl, making it impossible to obtain a perfectly horizontal loading floor.

Le but de la présente invention est de résoudre l'inconvénient sus-mentionné en proposant une assise de siège arrière qui permet lors du basculement du dossier arrière d'obtenir un plancher plat et qui conserve également un dispositif d'anti-soumarinage.  The object of the present invention is to solve the above-mentioned drawback by proposing a rear seat cushion which allows the rear backrest to tilt to obtain a flat floor and which also retains an anti-submissining device.

A cet effet, la présente invention a pour objet une assise de siège arrière de véhicule automobile montée pivotante dans sa partie située vers l'avant du véhicule  To this end, the present invention relates to a rear seat of a motor vehicle seat pivotally mounted in its part located towards the front of the vehicle.

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par un moyen de pivotement solidaire du plancher et permettant le basculement de l'assise à une position approximativement verticale de contact avec un dossier de siège avant et qui est caractérisée en ce que le moyen de pivotement comprend une barre horizontale disposée transversalement à l'axe longitudinal du véhicule en étant montée pivotante autour de son axe, au voisinage de ses extrémités opposées, respectivement sur deux plaques verticales de support solidaires du plancher, et deux biellettes prolongeant les deux extrémités de la barre de pivotement perpendiculairement à cette dernière et dont chacune des extrémités est reliée de façon articulée à un baquet constituant l'armature rigide de l'assise.  by a pivoting means integral with the floor and allowing the tilting of the seat to an approximately vertical position of contact with a front seat backrest and which is characterized in that the pivoting means comprises a horizontal bar arranged transversely to the axis longitudinal of the vehicle by being pivotally mounted about its axis, in the vicinity of its opposite ends, respectively on two vertical support plates secured to the floor, and two rods extending the two ends of the pivot bar perpendicular to the latter and each of which ends is hingedly connected to a bucket constituting the rigid frame of the seat.

Un moyen anti-soumarinage est prévu pour permettre la retenue sous cuisse de l'occupant en position d'utilisation de l'assise et est relié à la barre de pivotement de l'assise par l'intermédiaire de deux biellettes longitudinales de façon que le moyen antisoumarinage soit escamotable lors du basculement de l'assise.  An anti-submarining means is provided to allow the occupant to be restrained under the thigh in the position of use of the seat and is connected to the pivot bar of the seat by means of two longitudinal links so that the antisoumarinage means is retractable when tilting the seat.

De préférence, le moyen anti-soumarinage comprend une barre horizontale transversale à l'axe longitudinal du véhicule en étant maintenue surélevée par rapport à la barre de pivotement en position d'utilisation de l'assise par les deux biellettes de liaison et les extrémités inférieures de la barre anti-soumarinage sont pliées de façon à être parallèles à la barre et s'engagent respectivement à travers deux trous oblongs horizontaux et longitudinaux de deux plaques verticales solidaires du plancher en venant chacune en butée sur l'extrémité pliée correspondante de la barre de pivotement de façon que la barre anti-soumarinage et chaque biellette de liaison à la barre de pivotement forment avec le plancher un triangle indéformable en position d'utilisation de l'assise.  Preferably, the anti-submarining means comprises a horizontal bar transverse to the longitudinal axis of the vehicle while being held raised relative to the pivoting bar in the position of use of the seat by the two connecting rods and the lower ends. of the anti-submarining bar are folded so as to be parallel to the bar and engage respectively through two oblong horizontal and longitudinal holes of two vertical plates integral with the floor each coming into abutment on the corresponding folded end of the bar pivoting so that the anti-submarining bar and each connecting rod to the pivot bar form with the floor a non-deformable triangle in the position of use of the seat.

Chaque biellette de liaison des deux barres de pivotement et anti-soumarinage est rappelée élastiquement  Each connecting rod of the two pivot bars and anti-submarining is resiliently recalled

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à une position angulaire déterminée relativement au plancher par un ressort de torsion de façon à maintenir en position surélevée la barre anti-soumarinage.  at a determined angular position relative to the floor by a torsion spring so as to maintain the anti-submarining bar in the raised position.

Le baquet de l'assise comprend une pièce de butée faisant saillie sous celui-ci et venant en appui sur la barre anti-soumarinage en cas de choc du véhicule.  The seat bucket includes a stop piece projecting under it and coming to rest on the anti-submarining bar in the event of a vehicle impact.

Au début du basculement de l'assise, chaque biellette de liaison des barres de pivotement et antisoumarinage provoque, par l'intermédiaire du ressort de torsion, le pivotement vers la verticale de la barre anti-soumarinage de façon à dégager cette dernière de la trajectoire de déplacement de la pièce de butée.  At the beginning of the tilting of the seat, each connecting rod of the pivoting and anti-submarining bars causes, by means of the torsion spring, the pivoting towards the vertical of the anti-submarining bar so as to release the latter from the trajectory movement of the stop piece.

Les deux biellettes de liaison et la barre antisoumarinage sont amenées en position aplatie, à l'encontre de la force de rappel des ressorts de torsion, par rabattement sur la barre anti-soumarinage du dossier du siège arrière provoquant le déplacement dans les trous oblongs des extrémités de la barre anti-soumarinage.  The two connecting rods and the anti-submarining bar are brought into the flattened position, against the restoring force of the torsion springs, by folding down on the anti-submarining bar of the back of the rear seat causing displacement in the oblong holes of the ends of the anti-submarining bar.

L'invention sera mieux comprise et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement dans la description explicative qui va suivre faite en référence aux dessins schématiques annexés donnés uniquement à titre d'exemple illustrant un mode de réalisation de l'invention et dans lesquels : - la figure 1 est une vue de dessus du dispositif de pivotement et d'anti-soumarinage d'une assise de siège arrière de véhicule automobile conforme à l'invention ; - la figure 2 est une vue en coupe suivant la ligne II-II de la figure 1 et montrant le dispositif de pivotement et d'anti-soumarinage en position normale d'utilisation de l'assise ; les figures 3 à 6 sont des vues semblables à celle de la figure 2 et représentent les différents mouvements des éléments du dispositif de pivotement et d'anti-soumarinage lors du basculement de l'assise arrière ; et  The invention will be better understood and other objects, characteristics, details and advantages thereof will appear more clearly in the explanatory description which follows, made with reference to the appended schematic drawings given solely by way of example illustrating an embodiment. of the invention and in which: - Figure 1 is a top view of the pivoting and anti-submarining device of a rear seat seat of a motor vehicle according to the invention; - Figure 2 is a sectional view along line II-II of Figure 1 and showing the pivoting device and anti-submarining in normal position of use of the seat; Figures 3 to 6 are views similar to that of Figure 2 and show the different movements of the elements of the pivoting device and anti-submarining during the tilting of the rear seat; and

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- la figure 7 représente une vue partielle en coupe suivant la ligne VII-VII de la figure 1.  - Figure 7 shows a partial sectional view along line VII-VII of Figure 1.

En se reportant aux figures, la référence 1 désigne un siège arrière de véhicule automobile comprenant un dossier 2 articulé autour d'un axe 3 solidaire du plancher 4 du véhicule et une assise 5 montée pivotante dans sa partie située vers l'avant du véhicule par un moyen de pivotement 6 solidaire du plancher 4 et permettant le basculement de l'assise 5 à une position approximativement verticale de contact avec un dossier de siège avant (non représenté).  Referring to the figures, the reference 1 designates a rear seat of a motor vehicle comprising a backrest 2 articulated around an axis 3 secured to the floor 4 of the vehicle and a seat 5 pivotally mounted in its part situated towards the front of the vehicle by a pivoting means 6 secured to the floor 4 and allowing the tilting of the seat 5 to an approximately vertical position of contact with a front seat backrest (not shown).

Comme cela est connu en soi, l'assise 5 est constituée d'un baquet 7 constituant l'armature rigide de l'assise 5 et destiné à être recouvert de nappes de ressort et à être garni de mousse et de tissu. Le baquet 7 repose en position d'utilisation de l'assise sur le plancher horizontal et plat 4 du véhicule.  As is known per se, the seat 5 consists of a bucket 7 constituting the rigid frame of the seat 5 and intended to be covered with spring plies and to be lined with foam and fabric. The bucket 7 rests in the position of use of the seat on the horizontal and flat floor 4 of the vehicle.

Selon l'invention, le moyen de pivotement 6 comprend une barre cylindrique horizontale 8 disposée transversalement à l'axe longitudinal du véhicule et pouvant pivoter autour de son axe par ses extrémités opposées montées à rotation respectivement sur deux plaques verticales longitudinales de support 9 solidaires du plancher 4, et deux biellettes 10 prolongeant les deux extrémités de la barre 8 perpendiculairement à celle-ci, chaque extrémité 11 d'une biellette 10 étant pliée à angle droit et donc parallèle à la barre 8 pour constituer un axe cylindrique d'articulation monté à libre rotation sur une plaque rigide 12 solidaire du baquet 7 et de l'assise 5 en avant de celle-ci. Chaque axe d'articulation 11 s'engage ainsi à travers un perçage correspondant de la plaque 12 perpendiculairement à celle-ci, la plaque 12 s'étendant longitudinalement dans un plan perpendiculaire au plancher 4. La barre 8, les deux biellettes 10 et les deux axes d'articulation 11 sont situés dans un même plan.  According to the invention, the pivoting means 6 comprises a horizontal cylindrical bar 8 disposed transversely to the longitudinal axis of the vehicle and able to pivot around its axis by its opposite ends mounted for rotation respectively on two vertical vertical support plates 9 integral with the floor 4, and two links 10 extending the two ends of the bar 8 perpendicular thereto, each end 11 of a link 10 being bent at right angles and therefore parallel to the bar 8 to form a cylindrical axis of articulation mounted freely rotating on a rigid plate 12 secured to the bucket 7 and the seat 5 in front thereof. Each articulation axis 11 thus engages through a corresponding bore in the plate 12 perpendicular thereto, the plate 12 extending longitudinally in a plane perpendicular to the floor 4. The bar 8, the two rods 10 and the two articulation axes 11 are located in the same plane.

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Un moyen anti-soumarinage 13 permettant une retenue sous cuisse de l'occupant en position d'utilisation de l'assise est relié à la barre de pivotement 8 par l'intermédiaire de deux biellettes longitudinales 14 de façon que le moyen anti-soumarinage soit escamotable lors du basculement de l'assise 5.  An anti-submarining means 13 allowing a restraint under the thigh of the occupant in the position of use of the seat is connected to the pivoting bar 8 by means of two longitudinal links 14 so that the anti-submarining means is retractable when tilting the seat 5.

Le moyen anti-soumarinage comprend une barre cylindrique horizontale 15 s'étendant transversalement à l'axe longitudinal du véhicule et étant maintenue surélevée par rapport à la barre de pivotement 8 en position d'utilisation de l'assise par les deux biellettes de liaison 14 comme on le verra ultérieurement. La barre 15 a ses deux extrémités pliées de façon à former deux axes cylindriques d'articulation 16 parallèles à la barre 15 et dirigés en sens inverse l'un de l'autre pour s'engager à travers respectivement deux trous oblongs horizontaux et longitudinaux 17 réalisés dans deux plaques verticales longitudinales de support 18 solidaires du plancher 4. Les axes 16 sont reliés aux extrémités de la barre 15 par deux axes de raccordement 15a perpendiculaires à cette dernière de façon que la barre 15, les axes de raccordement 15a et d'articulation 16 soient situés dans un même plan.  The anti-submarining means comprises a horizontal cylindrical bar 15 extending transversely to the longitudinal axis of the vehicle and being held raised relative to the pivot bar 8 in the position of use of the seat by the two connecting rods 14 as we will see later. The bar 15 has its two ends folded so as to form two cylindrical axes of articulation 16 parallel to the bar 15 and directed in opposite directions from each other to engage through respectively two horizontal and longitudinal oblong holes 17 made in two vertical longitudinal support plates 18 integral with the floor 4. The axes 16 are connected to the ends of the bar 15 by two connecting axes 15a perpendicular to the latter so that the bar 15, the connecting axes 15a and articulation 16 are located in the same plane.

Chaque biellette 14 de liaison des deux barres 8 et 15 est rappelée élastiquement à une position angulaire déterminée par rapport au plancher 4 par un ressort de torsion 19 visible en figure 7, enfilé sur la barre 8 et ayant la branche droite de l'une de ses spires extrêmes solidaire du plancher, par exemple par l'intermédiaire d'une plaque rigide 20 fixée à celui-ci, et la branche droite de son autre spire extrême en appui sur la biellette 14 pour amener celle-ci à sa position angulaire représentée en figure 2 et selon laquelle chaque biellette 14 et la barre 15 avec ses extrémités inférieures 16 forment avec le plancher 4, en vue de côté, un triangle indéformable en position d'utilisation de l'assise 5. Les figures 1 et 2 montrent également  Each connecting rod 14 connecting the two bars 8 and 15 is resiliently recalled to an angular position determined relative to the floor 4 by a torsion spring 19 visible in FIG. 7, threaded on the bar 8 and having the straight branch of one of its extreme turns secured to the floor, for example by means of a rigid plate 20 fixed to the latter, and the right arm of its other extreme turn supported on the rod 14 to bring the latter to its angular position shown in Figure 2 and according to which each link 14 and the bar 15 with its lower ends 16 form with the floor 4, in side view, a non-deformable triangle in the position of use of the seat 5. Figures 1 and 2 also show

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qu'en position d'utilisation de l'assise, les deux axes d'extrémité 16 de la barre 15 sont en butée, par l'action des ressorts de torsion 19, respectivement sur les extrémités d'articulation 11 de la barre de pivotement 8 au niveau de leurs parties faisant saillie à travers les plaques de support 18.  in the position of use of the seat, the two end axes 16 of the bar 15 are in abutment, by the action of the torsion springs 19, respectively on the articulation ends 11 of the pivot bar 8 at their parts projecting through the support plates 18.

Le baquet 7 comprend également une pièce de butée ou taquet 21 faisant saillie sous celui-ci et ayant son extrémité libre en forme de crochet.  The bucket 7 also comprises a stop piece or cleat 21 projecting under it and having its free end in the form of a hook.

En cas de choc, le taquet 21 vient en butée contre la barre 8 qui, du fait de l' indéformabilité du triangle défini précédemment, remplit la fonction antisoumarinage.  In the event of an impact, the cleat 21 abuts against the bar 8 which, due to the non-deformability of the triangle defined above, fulfills the anti-submarining function.

Lors du basculement de l'assise 5 dans le sens indiqué par la flèche F en figure 3 pour augmenter le volume du coffre arrière du véhicule, les extrémités 11 de la barre de pivotement 8 sont désengagées des axes d'articulation 16 de la barre 15 comme représenté en figure 4 et les ressorts de torsion 19 positionnent sous un angle a par rapport à l'horizontale les deux biellettes 14 qui elles-mêmes positionnent la barre 15 de façon que le plan passant par celle-ci et ses deux axes d'articulation 16 soit positionné sous un angle ss par rapport à l'horizontale où les axes 16 viennent en butée sur les extrémités des deux trous oblongs 17 situées à gauche par rapport à la figure 5 qui montrent que la barre 15 est légèrement décalée vers la gauche par rapport aux figures précédentes pour se dégager de la trajectoire de déplacement du taquet 21 pendant le basculement de l'assise 5 et donc ne pas gêner celui-ci.  During the tilting of the seat 5 in the direction indicated by the arrow F in FIG. 3 to increase the volume of the rear boot of the vehicle, the ends 11 of the pivot bar 8 are disengaged from the articulation axes 16 of the bar 15 as shown in Figure 4 and the torsion springs 19 position at an angle a with respect to the horizontal the two rods 14 which themselves position the bar 15 so that the plane passing through it and its two axes of articulation 16 is positioned at an angle ss with respect to the horizontal where the axes 16 abut on the ends of the two oblong holes 17 located on the left with respect to FIG. 5 which show that the bar 15 is slightly shifted to the left compared to the previous figures to disengage from the movement path of the cleat 21 during the tilting of the seat 5 and therefore not interfere with it.

Lorsque cette assise est amenée à sa position basculée approximativement verticale représentée en figure 6 à laquelle les deux biellettes 10 sont sensiblement horizontales, le rabattement subséquent du dossier 2 du siège arrière sur la barre 15 provoque le déplacement de ses deux axes 16 le long des deux trous oblongs 17 vers la droite, c'est-à-dire vers le coffre arrière du When this seat is brought to its approximately vertical tilted position shown in FIG. 6 in which the two links 10 are substantially horizontal, the subsequent folding of the backrest 2 of the rear seat on the bar 15 causes its two axes 16 to move along the two oblong holes 17 to the right, i.e. to the rear trunk of the

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véhicule, jusqu'à aplatir, à l'encontre de la force de rappel des ressorts 19, l'ensemble constitué par les biellettes 14 et la barre anti-soumarinage 15 comme représenté en figure 6. Autrement dit, les biellettes 14 ainsi que la barre 15 et ses deux axes d'extrémité 16 se trouvent sensiblement dans le même plan horizontal que les deux biellettes 10 de pivotement de l'assise 5.  vehicle, until flattened, against the restoring force of the springs 19, the assembly constituted by the links 14 and the anti-submarining bar 15 as shown in FIG. 6. In other words, the links 14 as well as the bar 15 and its two end axes 16 are located substantially in the same horizontal plane as the two pivoting links 10 for the seat 5.

La remise en place du siège s'effectue en procédant de manière inverse jusqu'à ce que le mécanisme de pivotement et anti-soumarinage reprenne sa position d'origine des figures 1 et 2 sous l'action des ressorts de torsion 19 en ce qui concerne les biellettes 14 et la barre anti-soumarinage 15.  The seat is replaced by proceeding in reverse until the pivoting and anti-submarining mechanism returns to its original position in FIGS. 1 and 2 under the action of the torsion springs 19 as regards relates to the rods 14 and the anti-submarining bar 15.

Le dispositif ci-dessus décrit d'articulation de l'assise de siège arrière est d'une réalisation simple et la conception escamotable du dispositif d'antisoumarinage permet d'obtenir un plancher de chargement plat. The device described above for articulation of the rear seat cushion is of a simple embodiment and the retractable design of the anti-submarining device makes it possible to obtain a flat loading floor.

Claims (3)

REVENDICATIONS 1. Assise de siège arrière de véhicule automobile montée pivotante dans sa partie située vers l'avant du véhicule par un moyen de pivotement (6) solidaire du plancher et permettant le basculement de l'assise (5) à une position approximativement verticale de contact avec un dossier de siège avant, caractérisée en ce que le moyen de pivotement (6) comprend une barre horizontale (8) disposée transversalement à l'axe longitudinal du véhicule en étant montée pivotante autour de son axe, au voisinage de ses extrémités opposées, respectivement sur deux plaques verticales de support (9) solidaires du plancher (4), et deux biellettes (10) prolongeant les deux extrémités de la barre de pivotement (8) perpendiculairement à cette dernière et dont chacune des extrémités (11) est reliée de façon articulée à un baquet (7) constituant l'armature rigide de l'assise (5). 1. Rear seat seat of a motor vehicle pivotally mounted in its part located towards the front of the vehicle by pivoting means (6) integral with the floor and allowing the seat (5) to tilt to an approximately vertical position of contact with a front seat backrest, characterized in that the pivoting means (6) comprises a horizontal bar (8) arranged transversely to the longitudinal axis of the vehicle while being pivotally mounted around its axis, in the vicinity of its opposite ends, respectively on two vertical support plates (9) integral with the floor (4), and two rods (10) extending the two ends of the pivot bar (8) perpendicular to the latter and each of whose ends (11) is connected articulated to a bucket (7) constituting the rigid frame of the seat (5). 2. Assise selon la revendication 1, caractérisée en ce qu'un moyen anti-soumarinage (13) permettant la retenue sous cuisse de l'occupant en position d'utilisation de l'assise (5) est relié à la barre de pivotement (8) de l'assise (5) par l'intermédiaire de deux biellettes longitudinales (14) de façon que le moyen anti-soumarinage (13) soit escamotable lors du basculement de l'assise (5).  2. Seat according to claim 1, characterized in that an anti-submarining means (13) allowing the occupant's thigh restraint in the position of use of the seat (5) is connected to the pivot bar ( 8) of the seat (5) by means of two longitudinal links (14) so that the anti-submarining means (13) is retractable during the tilting of the seat (5). 3. Assise selon la revendication 2, caractérisée en ce que le moyen anti-soumarinage (13) comprend une barre horizontale (15) transversale à l'axe longitudinal du véhicule en étant maintenue surélevée par rapport à la barre de pivotement (8) en position d'utilisation de l'assise (5) par les deux biellettes de liaison (14), les extrémités inférieures (16) de la barre (15) sont pliées de façon à être parallèles à la barre (15) et s' engagent respectivement à travers deux trous oblongs horizontaux et longitudinaux (17) de deux plaques verticales (18) solidaires du plancher (4) en venant chacune en butée sur  3. Seat according to claim 2, characterized in that the anti-submarining means (13) comprises a horizontal bar (15) transverse to the longitudinal axis of the vehicle while being held raised relative to the pivot bar (8) in position of use of the seat (5) by the two connecting rods (14), the lower ends (16) of the bar (15) are folded so as to be parallel to the bar (15) and engage respectively through two oblong horizontal and longitudinal holes (17) of two vertical plates (18) integral with the floor (4) each coming into abutment on <Desc/Clms Page number 9> <Desc / Clms Page number 9> La présente invention concerne une assise de siège arrière de véhicule automobile avec dispositif d'antisoumarinage. The present invention relates to a rear seat seat of a motor vehicle with anti-submarining device. Elle se rapporte plus particulièrement à une assise de siège arrière pourvue d'un dispositif à barre antisoumarinage destinée à retenir l'occupant sous cuisse afin de limiter les déplacements exagérés vers l'avant, du bassin de l'occupant du siège lors d'un choc du véhicule, où il est connu que dans une telle situation le corps de celui-ci sanglé sur son siège, se déplace relativement à la ceinture, en particulier par glissement de son bassin le long de l'assise, sous la partie centrale de la ceinture. Une telle barre a donc pour effet de préserver l'occupant de lésions abdominales.  It relates more particularly to a rear seat cushion provided with an anti-submarining bar device intended to retain the occupant under the thigh in order to limit exaggerated forward movements of the pelvis of the occupant of the seat during a impact of the vehicle, where it is known that in such a situation the body of the latter strapped on its seat, moves relatively to the belt, in particular by sliding of its pelvis along the seat, under the central part of the belt. Such a bar therefore has the effect of preserving the occupant from abdominal injuries. On connaît des assises de siège arrière qui sont constituées d'un réseau de fil en acier formant un panier qui a la forme complémentaire d'une cuvette réalisée dans le plancher du véhicule avec laquelle il coopère en position d'utilisation pour un occupant de l'assise. Une telle forme assure parfaitement la retenue de l'occupant sous cuisse et évite à ce dernier de sous-mariner en cas de choc violent. Cependant, lorsque l'utilisateur du véhicule désire basculer vers l'avant l'assise jusqu'au contact avec le dossier du siège avant puis basculer le dossier arrière sur le plancher afin par exemple de transporter des objets encombrants, il s'avère que le dossier vient en contact avec le haut de la cuvette ne permettant pas d'obtenir un plancher de chargement parfaitement horizontal.  Rear seat seats are known which consist of a network of steel wire forming a basket which has the complementary shape of a bowl produced in the floor of the vehicle with which it cooperates in the position of use for an occupant of the vehicle. 'seated. Such a shape perfectly ensures the restraint of the occupant under the thigh and prevents the latter from submarining in the event of a violent shock. However, when the user of the vehicle wishes to tilt the seat forward until it contacts the back of the front seat and then tilt the rear folder to the floor in order, for example, to transport bulky objects, it turns out that the backrest comes into contact with the top of the bowl, making it impossible to obtain a perfectly horizontal loading floor. Le but de la présente invention est de résoudre l'inconvénient sus-mentionné en proposant une assise de siège arrière qui permet lors du basculement du dossier arrière d'obtenir un plancher plat et qui conserve également un dispositif d'anti-soumarinage.  The object of the present invention is to solve the above-mentioned drawback by proposing a rear seat cushion which allows the rear backrest to tilt to obtain a flat floor and which also retains an anti-submissining device. A cet effet, la présente invention a pour objet une assise de siège arrière de véhicule automobile montée pivotante dans sa partie située vers l'avant du véhicule To this end, the present invention relates to a rear seat of a motor vehicle seat pivotally mounted in its part located towards the front of the vehicle.
FR9910818A 1999-08-26 1999-08-26 REAR SEAT SEAT OF MOTOR VEHICLE WITH ANTI-SOUMARINAGE DEVICE Expired - Fee Related FR2797823B1 (en)

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FR9910818A FR2797823B1 (en) 1999-08-26 1999-08-26 REAR SEAT SEAT OF MOTOR VEHICLE WITH ANTI-SOUMARINAGE DEVICE

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2866608A1 (en) * 2004-02-25 2005-08-26 Renault Sas Motor vehicle seat, has belley pan whose lower side includes two reinforcement units limiting deformation of anti-submarining bump and disposed in abutment on underlying floor pan in case of impact
FR2996810A1 (en) * 2012-10-15 2014-04-18 Peugeot Citroen Automobiles Sa Structure for base of seat to be installed on floor of car, has connecting rod including ends rotatably secured to side region of front portion and front base, so that anti-submarining bar is moved to high level during forward displacement
CN110758196A (en) * 2019-09-09 2020-02-07 武汉格罗夫氢能汽车有限公司 Hydrogen energy automobile seat with emergency lifting mechanism
US11072265B2 (en) * 2019-09-18 2021-07-27 Lear Corporation Vehicle seat assembly with front seat pan height adjustment mechanism
US20220048417A1 (en) * 2020-08-11 2022-02-17 Toyoda Gosei Co., Ltd. Occupant protection apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169505A (en) * 1984-12-28 1986-07-16 Toyota Motor Co Ltd Rear seat cushion in motor vehicle
EP0403072A2 (en) * 1989-06-12 1990-12-19 Ford Motor Company Limited Automotive seat cushion support

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169505A (en) * 1984-12-28 1986-07-16 Toyota Motor Co Ltd Rear seat cushion in motor vehicle
EP0403072A2 (en) * 1989-06-12 1990-12-19 Ford Motor Company Limited Automotive seat cushion support

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2866608A1 (en) * 2004-02-25 2005-08-26 Renault Sas Motor vehicle seat, has belley pan whose lower side includes two reinforcement units limiting deformation of anti-submarining bump and disposed in abutment on underlying floor pan in case of impact
WO2005084997A1 (en) * 2004-02-25 2005-09-15 Renault S.A.S Motor vehicle seat provided with a seat cushion consisting of an anti-submarining shell
FR2996810A1 (en) * 2012-10-15 2014-04-18 Peugeot Citroen Automobiles Sa Structure for base of seat to be installed on floor of car, has connecting rod including ends rotatably secured to side region of front portion and front base, so that anti-submarining bar is moved to high level during forward displacement
CN110758196A (en) * 2019-09-09 2020-02-07 武汉格罗夫氢能汽车有限公司 Hydrogen energy automobile seat with emergency lifting mechanism
US11072265B2 (en) * 2019-09-18 2021-07-27 Lear Corporation Vehicle seat assembly with front seat pan height adjustment mechanism
US20220048417A1 (en) * 2020-08-11 2022-02-17 Toyoda Gosei Co., Ltd. Occupant protection apparatus
US11634050B2 (en) * 2020-08-11 2023-04-25 Toyoda Gosei Co., Ltd. Occupant protection apparatus

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