FR2901196A1 - Motor vehicle, has locking unit for releasing front and rear lateral connecting rods in case of impact such that seat is inclined towards front or rear along displacement direction for opposing movement of body of passenger - Google Patents

Motor vehicle, has locking unit for releasing front and rear lateral connecting rods in case of impact such that seat is inclined towards front or rear along displacement direction for opposing movement of body of passenger Download PDF

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Publication number
FR2901196A1
FR2901196A1 FR0604372A FR0604372A FR2901196A1 FR 2901196 A1 FR2901196 A1 FR 2901196A1 FR 0604372 A FR0604372 A FR 0604372A FR 0604372 A FR0604372 A FR 0604372A FR 2901196 A1 FR2901196 A1 FR 2901196A1
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France
Prior art keywords
seat
passenger
rods
impact
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.)
Granted
Application number
FR0604372A
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French (fr)
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FR2901196B1 (en
Inventor
Philippe Augade
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Renault SAS
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Renault SAS
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Publication date
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Priority to FR0604372A priority Critical patent/FR2901196B1/en
Publication of FR2901196A1 publication Critical patent/FR2901196A1/en
Application granted granted Critical
Publication of FR2901196B1 publication Critical patent/FR2901196B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B60N2/02Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/18Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
    • B60N2/1807Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other characterised by the cinematic
    • B60N2/1846Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other characterised by the cinematic pivoting about a distant axis, e.g. virtual
    • 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
    • B60N2/02Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/1695Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable with simultaneous height and inclination adjustment
    • 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
    • B60N2/02Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/18Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
    • B60N2/1807Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other characterised by the cinematic
    • B60N2/181Rods
    • B60N2/1814Parallelogram-like structure
    • 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
    • B60N2/02Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/22Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
    • 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
    • B60N2/42736Seats or parts thereof displaced during a crash involving substantially rigid displacement of the whole seat
    • 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
    • B60N2/42745Seats or parts thereof displaced during a crash involving substantially rigid displacement of the back-rest

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

Abstract

The vehicle has front and rear lateral connecting rods (51, 52) for inclining a seat (1) with respect to a floor (3) along a displacement direction of the vehicle. A locking unit releases the rods in case of an impact such that the seat is inclined towards front or rear along the displacement direction for opposing a movement of body of a passenger. The rods provoke the inclination of the seat under the action of forces exerted by the body of the passenger during the impact.

Description

VEHICULE AUTOMOBILE COMPORTANT UN SIEGE EQUIPE DE MOYENS D'INCLINAISONMOTOR VEHICLE HAVING A SEAT EQUIPPED WITH INCLINATION MEANS

La présente invention concerne un véhicule automobile comportant un plancher sur lequel est monté au moins un siège qui comprend une assise et un dossier et des moyens d'inclinaison du siège par rapport au plancher selon la direction de déplacement du véhicule. Le document FR 2 851 523 décrit un siège de véhicule automobile qui comporte une assise et un dossier et des moyens d'inclinaison du siège qui permettent, en cas de choc ou de retournement du véhicule, d'incliner le siège, soit latéralement, vers l'intérieur du véhicule, soit vers l'arrière du véhicule, afin de protéger le passager assis sur le siège. Ces moyens d'inclinaison comportent deux bielles parallèles dont les axes d'articulation sont perpendiculaires à la direction d'inclinaison du siège et qui forment un parallélogramme déformable. C'est la déformation de ce parallélogramme qui permet l'inclinaison du siège. Les moyens d'inclinaison sont bloqués par un dispositif de verrouillage, piloté par un dispositif de détection d'un choc, et sont activés par des moyens d'activation, par exemple un piston, qui déforment le parallélogramme formé par les deux bielles parallèles. En cas de choc, les moyens de détection d'un choc déverrouillent les moyens de blocage et actionnent les moyens d'activation. Le siège s'incline ainsi vers l'arrière du véhicule en cas de retournement ou de choc frontal et vers le centre du véhicule en cas de choc latéral. Le dispositif précité est relativement complexe et alourdit considérablement le siège ce qui n'est pas souhaitable dans les véhicules actuels dont la consommation en carburant doit rester réduite.  The present invention relates to a motor vehicle comprising a floor on which is mounted at least one seat which comprises a seat and a backrest and means for reclining the seat relative to the floor in the direction of movement of the vehicle. The document FR 2 851 523 describes a motor vehicle seat which comprises a seat and a backrest and means of reclining the seat which make it possible, in the event of an impact or overturning of the vehicle, to tilt the seat, or laterally, towards inside the vehicle, towards the rear of the vehicle, to protect the passenger sitting on the seat. These tilting means comprise two parallel rods whose axes of articulation are perpendicular to the direction of inclination of the seat and which form a deformable parallelogram. It is the deformation of this parallelogram which allows the inclination of the seat. The inclination means are locked by a locking device, controlled by a shock detection device, and are activated by activation means, for example a piston, which deform the parallelogram formed by the two parallel rods. In case of shock, the shock detection means unlock the locking means and actuate the activation means. The seat tilts to the rear of the vehicle in case of rollover or frontal impact and towards the center of the vehicle in case of side impact. The aforementioned device is relatively complex and considerably weighs the seat which is not desirable in current vehicles whose fuel consumption must remain reduced.

Le but de la présente invention est donc de proposer un nouveau dispositif d'inclinaison d'un siège de véhicule, vers l'avant ou vers l'arrière du véhicule, qui permet, en cas de choc, de protéger le passager assis sur le siège, qui soit plus simple et moins lourd que celui précité. Ce but est atteint au moyen d'un véhicule automobile comportant, de manière connue, un plancher sur lequel est monté au moins un siège qui comprend une assise et un dossier, des moyens d'inclinaison du siège par rapport au plancher selon la direction de déplacement du véhicule, et des moyens de verrouillage des moyens d'inclinaison qui, en cas de choc, débloquent ces derniers de manière à ce que le siège s'incline, selon la direction de déplacement, afin de s'opposer au mouvement du corps du passager pendant le choc. De manière caractéristique, selon l'invention, les moyens d'inclinaison sont conformés de manière à provoquer l'inclinaison du siège sous l'action des forces exercées par le corps du passager pendant le choc. Ainsi, les moyens d'inclinaison du siège de l'invention permettent de s'affranchir des moyens d'activation précités ce qui allège considérablement le véhicule de l'invention sans nuire à la sécurité des passagers. Selon l'invention, le véhicule peut également comprendre un dispositif de détection d'un choc qui débloque les moyens de verrouillage. Avantageusement, les moyens de verrouillage débloquent les moyens d'inclinaison sous l'action des forces exercées sur le siège par le corps du passager durant le choc. Ainsi, les mouvements du passager permettent à la fois de débloquer les moyens de verrouillage et d'actionner les moyens d'inclinaison.  The object of the present invention is therefore to propose a new device for tilting a vehicle seat, towards the front or towards the rear of the vehicle, which makes it possible, in the event of an impact, to protect the passenger seated on the vehicle. seat, which is simpler and lighter than the one mentioned above. This object is achieved by means of a motor vehicle comprising, in known manner, a floor on which is mounted at least one seat which comprises a seat and a backrest, means of inclination of the seat relative to the floor in the direction of movement of the vehicle, and means for locking the tilting means which, in the event of impact, release the latter so that the seat tilts, in the direction of movement, in order to oppose the movement of the body of the passenger during the shock. Typically, according to the invention, the tilting means are shaped so as to cause the inclination of the seat under the action of the forces exerted by the body of the passenger during the impact. Thus, the inclination means of the seat of the invention make it possible to dispense with the aforementioned activation means which considerably lighten the vehicle of the invention without harming the safety of the passengers. According to the invention, the vehicle may also comprise a shock detection device which unlocks the locking means. Advantageously, the locking means unlock the tilting means under the action of the forces exerted on the seat by the body of the passenger during the impact. Thus, the passenger's movements make it possible both to unlock the locking means and to actuate the tilting means.

Avantageusement, les moyens d'inclinaison comportent un couple de bielles latérales avant et un couple de bielles latérales arrière, ces bielles étant montées face à face, chacune sur un côté du siège et articulées au niveau du plancher et de l'assise, respectivement à l'avant et à l'arrière du siège, selon des axes parallèles et transversaux au siège. Avantageusement, les bielles latérales avant et arrière, montées d'un même côté du siège, sont concourantes en un point situé au-dessus de la ligne d'action de l'effort exercé par le :bassin du passager moyennant quoi, lors d'un choc, le :bassin du passager exerce une force qui incline les bielles vers l'avant ou vers l'arrière de l'assise de manière à s'opposer au mouvement du corps du passager pendant le choc. Avantageusement, le véhicule de l'invention comporte des moyens d'articulation du dossier par rapport à l'assise et des moyens de blocage des moyens d'articulation qui en cas de choc, débloquent les moyens d'articulation de manière à ce que le dossier vienne s'opposer au mouvement de la tête et/ou du dos du passager pendant le choc. Ces moyens de blocage peuvent être les moyens de verrouillage des moyens d'inclinaison lorsque le véhicule comporte à la fois les moyens d'inclinaison et les moyens d'articulation. Ces moyens d'articulation du dossier peuvent également être mis en oeuvre sans les moyens d'inclinaison du siège. Avantageusement, les moyens d'articulation comportent un premier et un second couple de bielles latérales montées entre l'assise et le dossier et articulées au niveau de l'assise et au niveau du dossier et les bielles des deux couples montées sur un même côté du siège sont concourantes en un point situé au-dessus de la ligne d'action de l'effort exercée par le dos de l'occupant sur le siège, moyennant quoi, en cas de choc arrière le dos du passager exerce une force qui incline les bielles vers l'arrière du véhicule de sorte que le dossier s'incline vers l'assise.  Advantageously, the inclination means comprise a pair of front lateral connecting rods and a pair of rear lateral connecting rods, these rods being mounted face to face, each on one side of the seat and articulated at the level of the floor and the seat, respectively to the front and rear of the seat, along axes parallel and transverse to the seat. Advantageously, the front and rear lateral connecting rods, mounted on one and the same side of the seat, are concurrent at a point situated above the line of action of the force exerted by the passenger's pelvis by means of which, when a shock, the: pelvis of the passenger exerts a force that inclines the rods forward or rearward of the seat so as to oppose the movement of the body of the passenger during the shock. Advantageously, the vehicle of the invention comprises means for articulating the backrest with respect to the seat and means for locking the articulation means which, in the event of impact, unlock the articulation means so that the The backrest is against the movement of the passenger's head and / or back during the impact. These locking means may be the locking means of the tilting means when the vehicle comprises both the tilting means and the hinge means. These means of articulation of the backrest can also be implemented without the means of inclination of the seat. Advantageously, the hinge means comprise a first and a second pair of lateral rods mounted between the seat and the backrest and articulated at the seat and at the backrest and the connecting rods of the two couples mounted on the same side of the seat. seat are concurrent at a point above the line of action of the force exerted by the back of the occupant on the seat, whereby, in the event of a rear impact, the back of the passenger exerts a force which inclines the connecting rods to the rear of the vehicle so that the backrest tilts towards the seat.

Avantageusement, les moyens d'articulation du dossier comportent un premier couple de bielles latérales articulées au niveau du plancher et de l'assise et un second couple de bielles latérales, articulées au niveau du plancher et du dossier ; les bielles des premier et second couples sont concourantes en un premier point situé au-dessus de la ligne de l'action de l'effort du dos du passager sur le dossier, les moyens d'inclinaison du siège comportent un couple de bielles latérales avant, articulées au niveau du plancher et de l'assise et une articulation pivot qui relie l'extrémité des bielles du premier couple de bielles latérales articulées au niveau de l'assise avec l'extrémité des bielles du second couple articulées au niveau du dossier ; de plus, le couple de bielles latérales avant et l'articulation pivot déterminent un centre instantané de rotation, situé au-dessus de la ligne d'action de l'effort du bassin du passager pendant un choc frontal. Les moyens d'articulation du dossier précités peuvent également être mis en oeuvre sans les moyens d'inclinaison du siège.  Advantageously, the means of articulation of the backrest comprise a first pair of lateral rods hinged at the level of the floor and the seat and a second pair of lateral rods articulated at the level of the floor and the backrest; the connecting rods of the first and second couples are concurrent at a first point above the line of the action of the force of the back of the passenger on the backrest, the means of inclination of the seat comprise a pair of front lateral rods articulated at the level of the floor and the seat and a pivot joint which connects the end of the connecting rods of the first pair of articulated lateral rods at the level of the seat with the end of the connecting rods of the second pair hinged at the backrest; in addition, the pair of front lateral connecting rods and the pivot joint determine an instantaneous center of rotation, located above the line of action of the force of the pelvis of the passenger during a frontal impact. The aforementioned means of articulation of the backrest can also be implemented without the means of inclination of the seat.

La présente invention, ses caractéristiques et les divers avantages qu'elle procure apparaîtront mieux à la lecture de la description qui suit de trois modes de réalisation particuliers, présentés à titre d'exemples non limitatifs, et qui fait référence aux dessins annexés, sur lesquels : - la figure 1 représente une vue en coupe longitudinale d'un premier mode de réalisation de l'invention, le siège étant en position normale, avant le choc ; - la figure 2 représente le mouvement du siège de la figure 1 en cas de choc frontal ; - la figure 3 représente le mouvement du siège de la figure 1 pendant un choc arrière ; - la figure 4 représente une vue en coupe longitudinale d'un second mode de réalisation de l'invention, en position normale avant un choc ; - la figure 5 représente le siège de la figure 4 pendant un choc arrière ; et - la figure 6 représente une vue en coupe longitudinale d'un troisième mode de réalisation de l'invention, en position normale. En référence à la figure 1, le siège 1 selon l'invention comporte une assise 2 montée sur un plancher 3 et un dossier 4. L'assise 2 est montée sur le plancher 3 au moyen d'un couple de bielles latérales avant 51 et d'un couple de bielles latérales arrières 52. La figure 1 étant une vue en coupe, seule une bielle de chacun des couples y est représentée. Chaque couple de bielles latérales 51, 52 comporte deux bielles montées face à face chacune sur un côté du siègeä Ces bielles sont articulées autour d'axes parallèles et transversaux au siège, situé au niveau du plancher 3 et sous l'assise 2. Les deux bielles des couples 51 et 52 situées sur un même côté du siège sont concourantes en un point A situé au-dessus de la ligne F d'action de l'effort exercé par le passager pendant un choc frontal et au-dessus de la ligne R d'action de l'effort exercé par le dos du passager lors d'un choc arrière. Le siège comporte également des moyens de verrouillage des bielles précitées qui ne sont pas représentés mais qui permettent ou au contraire bloquent le mouvement du siège 1. Lors d'un choc frontal, comme représenté sur la figure 2, les moyens de verrouillage autorisent le mouvement des bielles et de ce fait, sous l'effet des forces exercées par le passager sur le siège pendant le choc, les bielles des couples 51 et 52 font pivoter l'assise 2 vers l'arrière du siège, c'est-à-dire vers le dossier 4. La partie avant de l'assise 2 se relève au-dessus du plancher 3 et le dossier 4 s'incline avec l'assise vers le plancher 3. L'avant de l'assise se relevant, le passager ne peut donc glisser vers l'avant du siège, sous sa. ceinture de sécurité (mouvement dit de sous marinage). Lors d'un choc arrière, comme représenté sur la figure 3, les bielles des couples 51 et 52 inclinent l'assise 2 vers l'avant et de ce fait le dossier 4 et l'arrière de l'assise 2 se relèvent. Le dossier 4 vient ainsi contrecarrer le mouvement naturel du passager dont la tête est projetée vers l'arrière du siège. Dans le second mode de réalisation représenté sur la figure 4, seul le dossier comporte des moyens d'articulation qui comprennent un premier couple et un second couple de bielles latérales, respectivement 61 et 62. Les bielles du premier couple 61 sont montées au niveau de la partie avant du dossier tandis que le second couple 62 est monté sur la partie arrière du dossier. Les bielles des deux couples 61 et 62 sont articulées au niveau du dossier 4 et de l'assise 2 selon des axes parallèles et transversaux au siège 1. Les bielles des deux couples 61 et 62, situées d'un même côté du siège, sont concourantes en un point S situé au-dessus de la ligne d'effort. R exercé par le dos du passager lors d'un choc arrière. Lors d'un choc frontal, le dossier 4 prend la position représentée sur la figure 5. Les bielles s'inclinent vers l'arrière du siège 1 et le dossier 4 se rabat ainsi vers le dessus de l'assise 2 s'opposant au mouvement du passager. Ce second mode de réalisation peut également être mis en oeuvre sans moyens d'inclinaison de l'assise.  The present invention, its characteristics and the various advantages that it affords will appear better on reading the following description of three particular embodiments, presented by way of non-limiting examples, and which refers to the appended drawings, on which - Figure 1 shows a longitudinal sectional view of a first embodiment of the invention, the seat being in the normal position, before the shock; FIG. 2 represents the movement of the seat of FIG. 1 in the event of a frontal impact; - Figure 3 shows the movement of the seat of Figure 1 during a rear impact; - Figure 4 shows a longitudinal sectional view of a second embodiment of the invention, in the normal position before a shock; - Figure 5 shows the seat of Figure 4 during a rear impact; and - Figure 6 shows a longitudinal sectional view of a third embodiment of the invention, in the normal position. Referring to Figure 1, the seat 1 according to the invention comprises a seat 2 mounted on a floor 3 and a backrest 4. The seat 2 is mounted on the floor 3 by means of a pair of front lateral rods 51 and a pair of rear lateral rods 52. Figure 1 is a sectional view, only a connecting rod of each pair is shown. Each pair of lateral rods 51, 52 comprises two rods mounted face to face each on one side of the seat. These rods are hinged about axes parallel and transverse to the seat, located at the floor 3 and under the seat 2. Both rods of the pairs 51 and 52 located on the same side of the seat are concurrent at a point A above the line F of action of the force exerted by the passenger during a frontal impact and above the line R action of the force exerted by the passenger's back during a rear impact. The seat also comprises locking means of the aforementioned rods which are not shown but which allow or otherwise block the movement of the seat 1. In a frontal impact, as shown in Figure 2, the locking means allow the movement rods and thereby, under the effect of the forces exerted by the passenger on the seat during the impact, the connecting rods 51 and 52 rotate the seat 2 towards the rear of the seat, that is to say The front part of the seat 2 is raised above the floor 3 and the backrest 4 inclines with the seat towards the floor 3. The front of the seat being raised, the passenger therefore can not slide forward of the seat, under its. seatbelt (so-called submarine motion). In a rear impact, as shown in Figure 3, the connecting rods 51 and 52 tilt the seat 2 forward and thus the backrest 4 and the back of the seat 2 are raised. The backrest 4 thus counteracts the natural movement of the passenger whose head is projected towards the rear of the seat. In the second embodiment shown in FIG. 4, only the backrest comprises articulation means which comprise a first pair and a second pair of lateral connecting rods, respectively 61 and 62. The connecting rods of the first pair 61 are mounted at the level of the front part of the folder while the second pair 62 is mounted on the back part of the folder. The connecting rods of the two pairs 61 and 62 are articulated at the level of the backrest 4 and the seat 2 along axes parallel and transverse to the seat 1. The connecting rods of the two pairs 61 and 62, located on the same side of the seat, are intersecting at a point S above the line of effort. R exercised by the passenger's back during a rear impact. In a frontal impact, the backrest 4 takes the position shown in FIG. 5. The connecting rods tilt towards the back of the seat 1 and the backrest 4 thus folds towards the top of the seat 2 opposing the seat. passenger movement. This second embodiment can also be implemented without means of inclination of the seat.

Dans le troisième mode de réalisation représenté sur la figure 6, les moyens d'articulation du dossier 4 comportent une premier couple de bielles latérales 61, montées entre le plancher 3 et l'arrière de l'assise 2, et un second couple de bielles latérales 62, montées entre le plancher 3 et le dossier 4. Ces bielles sont articulées au niveau du plancher 3, de l'assise 2 et du dossier 4 autour d'axes parallèles entre eux et transversaux au siège 1. Les deux bielles de chacun des couples 61 et 62, situées d'un même côté du siège 1, sont concourantes en un premier point D situé au-dessus de la ligne R d'action de l'effort exercé par le dos du passager lors d'un choc arrière. Les moyens d'inclinaison de l'assise 2 comportent d'une part un couple de bielles latérales avant 71 monté à l'avant de l'assise 2 et articulées au niveau du plancher 3 et du dessous de l'assise 2 selon deux axes parallèles et transversaux au siège 1 et, d'autre part, une articulation pivot 72 disposée à l'arrière de l'assise 2, qui relie les extrémités des bielles du premier couple de bielles 61 qui sont articulées sous l'assise 2, avec les extrémités des bielles du second couple 62 qui sont articulées au niveau du dossier 4. Le premier couple de bielles latérales 71 et la ligne T (tracée en pointillés) reliant le pivot 72 avec le point D sont concourantes en un second point E, situé au-dessus de la ligne F d'action de l'effort exercé par le passager lors d'un choc frontal. Les mouvements du siège 1 et du dossier 4 lors d'un choc frontal et d'un choc arrière sont les mêmes que ceux décrits en référence aux deux modes de réalisation précédents.  In the third embodiment shown in FIG. 6, the means of articulation of the backrest 4 comprise a first pair of lateral connecting rods 61, mounted between the floor 3 and the rear of the seat 2, and a second pair of connecting rods. lateral 62, mounted between the floor 3 and the backrest 4. These rods are hinged at the floor 3, the seat 2 and the backrest 4 about axes parallel to each other and transverse to the seat 1. The two rods of each pairs 61 and 62, located on the same side of the seat 1, are concurrent in a first point D located above the line R of the force exerted by the back of the passenger in a rear impact . The tilt means of the seat 2 comprise firstly a pair of front lateral connecting rods 71 mounted at the front of the seat 2 and hinged at the floor 3 and below the seat 2 along two axes. parallel and transverse to the seat 1 and, secondly, a pivot joint 72 disposed at the rear of the seat 2, which connects the ends of the rods of the first pair of rods 61 which are hinged under the seat 2, with the ends of the rods of the second pair 62 which are hinged at the back 4. The first pair of lateral rods 71 and the line T (drawn in dashed line) connecting the pivot 72 with the point D are concurrent in a second point E, located above the line F of the force exerted by the passenger during a frontal impact. The movements of the seat 1 and the backrest 4 during a frontal impact and a rear impact are the same as those described with reference to the two previous embodiments.

Claims (7)

REVENDICATIONS 1. Véhicule automobile comportant un plancher (3) sur lequel est monté au moins un siège (1) qui comprend une assise (2) et un dossier (4), des moyens d'inclinaison (51, 52 ; 71, 72) dudit siège (1) par rapport audit plancher (3) selon la direction de déplacement dudit véhicule, et des moyens de verrouillage desdits moyens d'inclinaison (51, 52 ; 71, 72) qui, en cas de choc, débloquent lesdits moyens d'inclinaison (51, 52 ; 71, 72) dudit siège (1) de manière à ce que ledit siège (1) s'incline selon ladite direction de déplacement afin de s'opposer au mouvement du corps du passager pendant le choc, caractérisé en ce que lesdits moyens d'inclinaison (51, 52 ; 71, 72) sont conformés de manière à provoquer l'inclinaison dudit siège (1) sous l'action des forces exercées par le corps du passager pendant le choc.  Motor vehicle comprising a floor (3) on which at least one seat (1) is mounted which comprises a seat (2) and a backrest (4), inclining means (51, 52; 71, 72) of said seat seat (1) with respect to said floor (3) in the direction of movement of said vehicle, and locking means of said inclining means (51, 52; 71, 72) which, in the event of an impact, unlock said means for inclining (51, 52; 71, 72) said seat (1) so that said seat (1) tilts in said direction of movement to oppose the movement of the body of the passenger during the shock, characterized in said tilting means (51, 52; 71, 72) are shaped to cause said seat (1) to tilt under the action of the forces exerted by the passenger's body during the impact. 2. Véhicule automobile selon la revendication 1, caractérisé en ce que lesdits moyens de verrouillage débloquent lesdits moyens d'inclinaison (51, 52 ; 71, 72) sous l'action des forces exercées sur ledit siège (1) par le corps du passager durant le choc.  2. A motor vehicle according to claim 1, characterized in that said locking means unlock said tilting means (51, 52; 71, 72) under the action of the forces exerted on said seat (1) by the body of the passenger during the shock. 3. Véhicule automobile selon la revendication 1 ou 2, caractérisé en ce que lesdits moyens d'inclinaison comportent un couple de bielles latérales avant (51) et un couple de bielles latérales arrière (52), lesdites bielles étant montées face à face, chacune sur un côté dudit siège (1) et articulées au niveau dudit plancher (3) et de ladite assise (2), respectivement à l'avant et à l'arrière dudit siège (1.), selon des axes parallèles et transversaux audit siège (1).  3. A motor vehicle according to claim 1 or 2, characterized in that said inclining means comprise a pair of front lateral connecting rods (51) and a pair of rear lateral connecting rods (52), said rods being mounted face to face, each on one side of said seat (1) and hinged at said floor (3) and said seat (2), respectively at the front and rear of said seat (1.), along axes parallel and transverse to said seat (1). 4. Véhicule selon la revendication 3, caractérisé en ce que lesdites bielles latérales avant et arrière desditscouples de bielles latérales avant et arrière (51, 52), situées d'un même côté dudit siège (1) sont concourantes en un point situé (A) au-dessus de la ligne (F) d'action de l'effort exercé par le bassin du passager moyennant quoi, lors d'un choc, le bassin du passager exerce une force qui incline lesdites bielles (51, 52) vers l'avant ou vers l'arrière de ladite assise (2) de manière à s'opposer au mouvement du corps du passager pendant le choc.  4. Vehicle according to claim 3, characterized in that said front and rear lateral rods of said front and rear lateral rods (51, 52), located on the same side of said seat (1) are concurrent at a point (A). ) above the line (F) for the force exerted by the passenger's pelvis, whereby, during an impact, the passenger's pelvis exerts a force which inclines said rods (51, 52) towards the front or rear of said seat (2) so as to oppose the movement of the passenger body during the impact. 5. Véhicule selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il comporte des moyens d'articulation (61, 62) dudit dossier (4) par rapport à ladite assise (2) et des moyens de blocage desdits moyens d'articulation (61, 62), qui en cas de choc, débloquent lesdits moyens d'articulation (61, 62) de manière à ce que ledit dossier (4) vienne s'opposer au mouvement de la tête et/ou du dos du passager pendant le choc.  5. Vehicle according to any one of claims 1 to 4, characterized in that it comprises hinge means (61, 62) of said folder (4) relative to said seat (2) and locking means of said articulation means (61, 62) which, in the event of an impact, release said articulation means (61, 62) so that said backrest (4) opposes the movement of the head and / or the passenger's back during the shock. 6. Véhicule selon la revendication 5, caractérisé en ce que lesdits moyens d'articulation comportent un premier et un second couple de bielles latérales (61, 62), montées entre ladite assise (2) et ledit dossier (4) et articulées au niveau de ladite assise (2) et au niveau dudit dossier (4) et en ce que lesdites bielles (61, 62) montées d'un même côté dudit siège (1) sont concourantes en un point (S), situé au-dessus de la ligne (R) d'action de l'effort exercée par le dos de l'occupant sur ledit siège (1), moyennant quoi, en cas de choc arrière, le dos du passager exerce une force qui incline lesdites bielles (61, 62) vers l'arrière dudit véhicule de sorte que ledit dossier (4) s'incline vers ladite assise (2).  6. Vehicle according to claim 5, characterized in that said hinge means comprise a first and a second pair of lateral rods (61, 62), mounted between said seat (2) and said backrest (4) and hinged at the level of said seat (2) and at the level of said backrest (4) and in that said connecting rods (61, 62) mounted on the same side of said seat (1) are concurrent at a point (S), situated above the line (R) of action of the force exerted by the occupant's back on said seat (1), whereby, in the event of a rear impact, the passenger's back exerts a force which inclines said connecting rods (61, 62) towards the rear of said vehicle so that said backrest (4) inclines towards said seat (2). 7. Véhicule selon l'une quelconque des revendications 1 à 5, caractérisé en ce que lesdits moyens d'articulation dudit dossier (4) comportent un premier couple de bielles latérales (61), articulées au niveau dudit plancher (3) et de ladite assise (2) et un second couple de bielles latérales (62), articulées au niveau dudit plancher (3) et dudit dossier (4), en ce que lesdites bielles desdits premier et second couples (61, 62), situées sur un même côté dudit siège (1), sont concourantes en un premier point (E), situé au-dessus de la ligne (R) d'action de l'effort du dos du passager sur ledit dossier (4), lors d'un choc arrière, en ce que lesdits moyens d'inclinaison dudit siège (1) comportent un couple de bielles latérales avant (71), articulées au niveau dudit plancher (3) et de ladite assise (2) et une articulation pivot (72) qui relie l'extrémité des bielles dudit premier couple de bielles latérales (71) articulées au niveau de ladite assise (2) avec l'extrémité des bielles dudit second couple (62) articulées au niveau dudit dossier (4) et en ce que ledit couple de bielles latérales avant (71) et ladite articulation pivot (72) déterminent un centre instantané de rotation (D), situé au-dessus de la ligne (F) d'action de l'effort du bassin du passager pendant un choc frontal.  7. Vehicle according to any one of claims 1 to 5, characterized in that said articulation means of said backrest (4) comprise a first pair of lateral rods (61) articulated at said floor (3) and said seat (2) and a second pair of lateral rods (62) articulated at said floor (3) and said backrest (4), in that said connecting rods of said first and second pairs (61, 62), located on the same side of said seat (1), are concurrent in a first point (E), located above the line (R) of the action of the back of the passenger on said backrest (4), during a shock rearward, in that said means for tilting said seat (1) comprise a pair of front lateral connecting rods (71), hinged at said floor (3) and said seat (2) and a pivot joint (72) which connects the end of the rods of said first pair of lateral rods (71) articulated at said seat (2) with the end connecting rods of said second pair (62) articulated at said backrest (4) and in that said pair of front lateral connecting rods (71) and said pivot joint (72) determine an instantaneous center of rotation (D), located at above the line (F) of the action of the passenger's pelvis during a frontal impact.
FR0604372A 2006-05-16 2006-05-16 MOTOR VEHICLE HAVING A SEAT EQUIPPED WITH INCLINATION MEANS Expired - Fee Related FR2901196B1 (en)

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CN106274572A (en) * 2015-06-03 2017-01-04 广西大学 A kind of adjustable automobile seat
CN108372819A (en) * 2016-10-18 2018-08-07 福特全球技术公司 Reconfigurable seat assembly
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FR2796896A1 (en) * 1999-07-30 2001-02-02 Faure Bertrand Equipements Sa Articulated seat for automotive vehicle comprises a quadrilateral armature formed by four rods commanding the movement of the seat back relatively to the seat base
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Publication number Priority date Publication date Assignee Title
CN106274572A (en) * 2015-06-03 2017-01-04 广西大学 A kind of adjustable automobile seat
CN108372819A (en) * 2016-10-18 2018-08-07 福特全球技术公司 Reconfigurable seat assembly
EP3543066A1 (en) * 2018-03-22 2019-09-25 Hyundai Motor Company Vehicle seat
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US10744909B2 (en) 2018-11-26 2020-08-18 Hyundai Motor Company Height adjustment apparatus of vehicle seat

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