EP1687179A1 - Seat for a motor vehicle, and motor vehicle equipped with this seat - Google Patents

Seat for a motor vehicle, and motor vehicle equipped with this seat

Info

Publication number
EP1687179A1
EP1687179A1 EP04819270A EP04819270A EP1687179A1 EP 1687179 A1 EP1687179 A1 EP 1687179A1 EP 04819270 A EP04819270 A EP 04819270A EP 04819270 A EP04819270 A EP 04819270A EP 1687179 A1 EP1687179 A1 EP 1687179A1
Authority
EP
European Patent Office
Prior art keywords
seat
frame
vehicle
fixing means
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.)
Withdrawn
Application number
EP04819270A
Other languages
German (de)
French (fr)
Inventor
Dominique Cabrie
Jean Pierre Guignard
Jérôme MAKALA
Mathieu Meynet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Publication of EP1687179A1 publication Critical patent/EP1687179A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/68—Seat frames
    • 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
    • B60N2/005—Arrangement or mounting of seats in vehicles, e.g. dismountable auxiliary seats

Definitions

  • Motor vehicle seat and motor vehicle equipped with a seat.
  • the present invention relates to a seat for a vehicle, as well as a motor vehicle equipped with such a seat.
  • the front seats of motor vehicles are generally provided with the possibility of adjusting the position of the seat relative to the structure of the vehicle and of adjusting the inclination of a backrest relative to a seat.
  • the third backrest is connected to the seat by a link articulated along a transverse axis, and the seat is mounted on the vehicle floor by means of slides.
  • Document FR 2 801 851 discloses an adjustable seat for a motor vehicle.
  • such a seat which must withstand in the event of a violent impact of the motor vehicle with an obstacle, has a frame and articulations provided accordingly which are bulky and heavy.
  • the present invention relates to a front seat for a motor vehicle allowing the design of a light and thin frame to have a space-saving seat preserving a space of a cabin, while improving the rigidity and resistance of the seat.
  • the present invention also relates to a front seat for a motor vehicle making it possible to improve the protection of the occupants in the event of a longitudinal or lateral impact sustained by a vehicle, or in the event of the vehicle overturning.
  • Such a front seat for a motor vehicle comprises a back frame, lower fixing means for rigidly fixing the back frame to a lower structural element of a passenger compartment, and upper fixing means for rigidly fixing an upper part of the back frame to an upper structural element of a passenger compartment.
  • the upper and lower attachments of the backrest frame allow the backrest to be held relatively to the structure of the vehicle and consequently to increase the rigidity of the seat as a whole.
  • the seat can be provided with a thin and light frame without harming the rigidity of the seat or its resistance, in particular in the event of the vehicle impacting with an obstacle.
  • structural element is meant an upright, a cross member, a beam, a central beam or a roof or floor plate forming the structure of the vehicle.
  • the back frame and the lower and upper fixing means are adapted to form means for stiffening a vehicle interior structure.
  • the back frame connecting a lower structural element to an upper structural element of the vehicle allows reinforcement of the vehicle structure.
  • the rigidity of the vehicle is improved, especially in torsion.
  • the back frame is fixed directly to a lower structural element by the lower fixing means.
  • a seat frame can be mounted vertically movable relative to the back frame and / or movable in rotation about a horizontal axis.
  • a seat frame is rigidly fixed to the back frame, and the lower fixing means rigidly connect the seat frame to a lower structural element of a passenger compartment, the frame seat, the back frame and the lower and upper fixing means being adapted to form means for stiffening a cabin structure of the vehicle.
  • the seat and back frames can be fully formed.
  • the lower fixing means comprise a single foot supporting the seat, said foot being able to be rigidly fixed on a lower element of the cabin structure.
  • the single leg provides space for the passenger feet located in a rear row of seats.
  • the upper fixing means comprise at least one upper arm extending from an upper part of the back frame and can be rigidly fixed on the side opposite to an upper element of the passenger compartment structure.
  • the seat is provided with at least three attachment points for a seat belt. The rigidity imparted to the seat by the upper and lower fasteners allows the backrest to withstand the tensile force exerted by the seat belt on the upper part of the backrest when the passenger is thrown forward.
  • the invention also relates to a motor vehicle comprising at least one seat according to one aspect of the invention.
  • the seat back frame can be rigidly fixed on abroadesss lower cross members, on a lower central beam on a lower spar, and / or on a lower section of an upright of the vehicle structure.
  • the upper part of the back frame can be rigidly fixed on an upper cross member, on an upper central beam, on an upper spar and / or on an upper portion of a vehicle upright.
  • the backrest frame being fixed, and in particular when the seat is intended for the driver, a mobile control station can be provided along a longitudinal axis relative to the seat in order to allow adjustment of the driving position.
  • FIG. 1 represents "a schematic view in longitudinal section of the interior of a motor vehicle fitted with a seat according to one aspect of the invention
  • - Figure 2 shows a partial cross-sectional view along ÎÎ-II of the passenger compartment of the motor vehicle provided with the seat, according to Figure 1
  • - Figure 3 shows a schematic side view of a seat according to one aspect of the invention.
  • a passenger compartment 1 of a partially represented motor vehicle is delimited by a floor 2, a dashboard 3 provided with a steering wheel 4, a front windshield 5 and a roof 6.
  • a driver's front seat referenced 7 as a whole is arranged facing the steering wheel 4 and located in front of a row of rear seats (not shown).
  • Headquarters ? comprises a seat 8 and a backrest 9.
  • a frame of the seat 7 is shown in strong lines, a landing or lining of the seat 7 being delimited by dotted lines.
  • the seat frame 7 comprises a seat frame 10 extending substantially horizontally while being slightly inclined towards the rear and a back frame 11 extending substantially vertically while being substantially inclined towards the rear.
  • the backrest and seat frames 10 are rigidly fixed to each other.
  • the frame is here in one piece.
  • the seat frame 10 is rigidly fixed to the floor 2 by means of lower fixing means in the form of a central block or central foot 12 and a lower plate 13, the foot 12 having a fixed upper end to a central region of the seat frame 10 and a lower end rigidly fixed to the lower plate 13, the latter itself being rigidly fixed to the floor 2 of the passenger compartment,
  • the back frame 11 and the seat frame 10 are connected by a curved connection portion 14 forming a rigid connection between the back frame 11 and the seat frame 10.
  • the back frame 11 is provided with its upper end of a fixing arm 15 extending upwards from the upper edge of the support portion 11, the end 16 of the arm 15 opposite the support portion 11 being rigidly fixed to an element vehicle structure superior. As can best be seen in FIG.
  • the upper end of the arm 15 is fixed to an upper spar 17 of the vehicle, that is to say a longitudinal structural element of the vehicle delimiting an upper edge of the roof 6.
  • the passenger compartment 1 is bounded laterally by an upright 18 located substantially next to the backrest 9 of the seat 7.
  • Such an upright 18, called “middle foot” is generally disposed between a rear door opening and a front door opening formed in the vehicle structure.
  • Such an amount contributes to the rigidity of the structure of the motor vehicle, despite the openings necessary for access to the front and rear seats.
  • the back frame 11 comprises two lateral uprights 19, 20, a lower cross member 21, an intermediate cross member 22, and an upper cross member 23.
  • a portion housing 24 is formed at the intersection of the upright 20 located on the side of the center leg 18 and the upper cross member 23 of the frame of the support portion 11.
  • the housing portion 24 is in the form of a substantially square profile frame for housing and fixing a seat belt retractor not shown, to form a top attachment point of a seat belt on board the seat 7, which is also provided with means of lower clip in the form of a first fixing tab 21a provided at the lateral end of the lower cross member 21, on the side of the center leg 18, and a second fixing tab 2ib provided at the opposite end of the lower cross member 21 of the backrest frame 11.
  • the first tab 21a is provided for permanent fixing of one end of a seat belt, the other tab 21b being provided for fixing a removable fixing device d 'an intermediate portion of the seat belt.
  • the back frame 11 comprises a substantially vertical branch 25 connecting the arm 15 to the frame 24 and an oblique branch 26 connecting the arm 15 substantially , in the middle of the upper cross member 23 of the support portion 11.
  • the seat provided that the frame and the fastenings are suitable, that is to say that they are sufficiently resistant, contributes to increasing the rigidity of the structure of the vehicle by forming a stiffening element between a lower structural element and an upper structural element. If the rigidity imparted by the seat to the structure is sufficient, the middle leg can be eliminated, which is then replaced by the seat frame. Thus, access to the seats is clear and easier for the occupants.
  • the seat seat frame instead of being fixed on a floor 2, can be fixed on lower stiffening crosspieces (not shown) arranged transversely across the floor, we can also consider an oblique or horizontal foot connecting one side of the seat frame to a lower cross member, to a lower end of the vertical upright, to a lower central beam or to a lower spar (not shown), to further clear the space under the seat for the feet of the passengers.
  • the arm 15 could be fixed by its upper end to another element than a spar, such as an upper central beam, an upper stiffening crosspiece (not shown), an upper end of the upright 18 or directly the roof 6.
  • FIG. 3 where the references to elements similar to those of FIGS.
  • a seat 7 comprises a backrest 9 comprising a backrest frame 11 provided with an arm 15 rigidly fixed to a spar 17 of an upper part of the structure of a motor vehicle.
  • the back frame extends downward through a lower extension 27 which is rigidly connected to a floor 2 of the motor vehicle.
  • a backrest cover 28 is provided on one side of the backrest frame 11. This cover can be fixed on the seat frame 11, or vertically movable, as illustrated by arrow D,
  • the seat 7 further comprises a seat frame seat 10 comprising one end fixed to the backrest frame 11 below the backrest cover 28 and extending substantially perpendicular to the backrest frame 11.
  • the seat frame 10 carries a seat cover on an upper surface 29,
  • the seat frame 10 can be rigidly fixed to the backrest frame 11, for example being formed integrally with the latter, or mounted movable along a horizontal axis 30 (perpendicular to the plane of the figure
  • the seat frame 10 is mounted vertically movable according to arrow D on the frame backrest 11 so as to allow adjustment of the seat height.
  • the backrest frame is rigidly fixed directly to upper and lower elements of vehicle structure, so that the backrest frame itself can help strengthen the structure of the motor vehicle.
  • the seat back frame instead of being fixed on a floor 2, can be fixed on lower stiffening crosspieces (not shown) arranged transversely across the floor.
  • a lower oblique or horizontal extension 27 connecting the backrest frame to a lower cross member, at a lower end of the vertical upright, to a lower central beam or to a lower spar (not shown), to further clear the space. under the seat for the feet of the passengers.
  • the arm 15 is fixed by its upper end to another element than a spar, such as an upper central beam, an upper stiffening cross member (not shown), “do the upper end of the upright 18 or directly the roof 6, thanks to the invention, a seat is obtained which makes it possible to lighten the frame of a seat while increasing the rigidity of the seat, in particular in the event of an impact, the lightened seat frame makes it possible to preserve the habitable space of a passenger compartment of the motor vehicle, in particular for rear passengers.
  • the seat can be used to stiffen the structure of the whole motor vehicle-

Landscapes

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

Abstract

A front seat for a motor vehicle comprises a seat frame (10) and backrest frame (11), lower fixing means (12, 13) for rigidly fixing the backrest frame to a lower structural element (2) of a passenger compartment, and upper fixing means (15) for rigidly fixing an upper part of the backrest frame to an upper structural element (17) of a passenger compartment.

Description

Siège pour véhicule automobile, et véhicule automobile équipé d'un teï siège.Motor vehicle seat, and motor vehicle equipped with a seat.
La présente invention concerne un siège pour véhicule, ainsi qu'un véhicule automobile équipé d'un tel siège. Les sièges avant de véhicules automobiles sont généralement prévus avec possibilité de réglage de la position du siège relativement à la structure du véhicule et de réglage de F inclinai son d'un dossier relativement à une assise. Pour ce faire, 3e dossier est relié à l'assise par une liaison articulée selon un axe transversal, et l' assise est montée sur le plancher du véhicule par l'intermédiaire de glissières. On connaît par le document FR 2 801 851 un siège réglable pour véhicule automobile. Néanmoins, un tel siège, qui doit résister en cas de choc violent du véhicule automobile avec un obstacle, présente une armature et des articulations prévues en conséquence qui sont encombrantes et lourdes. On obtient un siège encombrant sans toutefois obtenir αiαe rigidité satisfaisante du siège. La présente invention a pour objet un siège avant pour véhicule automobile permettant la conception d'une armature légère et mince pour disposer d'un siège peu encombrant préservant un espace d'un, habitacle, tout en améliorant îa rigidité et la résistance du siège. La présente invention a également pour objet un siège avant pour véhicule automobile permettant d'améliorer la protection des occupants en cas de choc longitudinal ou latéral subi par un véhicule, ou en cas de retournement du véhicule. Un tel siège avant pour véhicule automobile comprend une armature de dossier, des moyens inférieurs de fixation pour fixer l'armature de dossier rigidement sur un élément inférieur de structure d'un habitacle, et des moyens supérieurs de fixation pour fixer rigidement une partie supérieure de l'armature de dossier à un élément supérieur de structure d'un habitacle. Les fixations supérieure et inférieure de F armature de dossier permettent un maintien du dossier relativement à la structure du véhicule et par conséquent une augmentation de la rigidité du siège dans son ensemble. Le siège peut être prévu avec une armature mince et légère sans nuire â la rigidité du siège ou à sa résistance, notamment en cas de choc du véhicule avec un obstacle. Par élément de structure, on entend un montant, une traverse, un longeron, une poutre centrale ou une tôle de toit ou de plancher formant la structure du véhicule. Avantageusement, l'armature de dossier et les moyens inférieurs et supérieurs de fixation sont adaptés pour former des moyens de rigidification d'une structure d'habitacle du véhicule. Ainsi, F armature de dossier reliant un élément inférieur de structure à un élément supérieur de structure du véhicule permet un renforcement de îa structure de véhicule. La rigidité du véhicule est améliorée, notamment en torsion. La résistance de F habitacle en cas de choc est augmentée et la protection des occupants est améliorée. À fi» de préserver un réglage du dossier, on peut prévoir une garniture de dossier montée mobile verticalement sur l'armature de dossier. Dans un mode de réalisation, F armature de dossier est fixée directement sur un élément inférieur de structure par les moyens inférieurs de fixation. Une armature d'assise peut être montée mobile verticalement relativement à l'armature de dossier et/ ou mobile à rotation selon un axe horizontal. Dans un autre mode de réalisation, une armature d'assise est fixée rigidement â l'armature de dossier, et les moyens inférieurs de fixation relient rigidement l'armature d'assise sur un élément inférieur de structure d'un habitacle, l'armature d' assise, l 'armature de dossier et les moyens inférieurs et supérieurs de fixation étant adaptés pour former des moyens de rigidification d' une structure d'habitacle du véhicule. Les armatures d'assise et de dossier peuvent être formées intégralement. Avantageusement, les moyens inférieurs de fixation comprennent un unique pied supportant l'assise, ledit pied pouvant être fixé rigidement sur un élément inférieur de structure d'habitacle.The present invention relates to a seat for a vehicle, as well as a motor vehicle equipped with such a seat. The front seats of motor vehicles are generally provided with the possibility of adjusting the position of the seat relative to the structure of the vehicle and of adjusting the inclination of a backrest relative to a seat. To do this, the third backrest is connected to the seat by a link articulated along a transverse axis, and the seat is mounted on the vehicle floor by means of slides. Document FR 2 801 851 discloses an adjustable seat for a motor vehicle. However, such a seat, which must withstand in the event of a violent impact of the motor vehicle with an obstacle, has a frame and articulations provided accordingly which are bulky and heavy. A bulky seat is obtained without, however, obtaining satisfactory seat rigidity. The present invention relates to a front seat for a motor vehicle allowing the design of a light and thin frame to have a space-saving seat preserving a space of a cabin, while improving the rigidity and resistance of the seat. The present invention also relates to a front seat for a motor vehicle making it possible to improve the protection of the occupants in the event of a longitudinal or lateral impact sustained by a vehicle, or in the event of the vehicle overturning. Such a front seat for a motor vehicle comprises a back frame, lower fixing means for rigidly fixing the back frame to a lower structural element of a passenger compartment, and upper fixing means for rigidly fixing an upper part of the back frame to an upper structural element of a passenger compartment. The upper and lower attachments of the backrest frame allow the backrest to be held relatively to the structure of the vehicle and consequently to increase the rigidity of the seat as a whole. The seat can be provided with a thin and light frame without harming the rigidity of the seat or its resistance, in particular in the event of the vehicle impacting with an obstacle. By structural element is meant an upright, a cross member, a beam, a central beam or a roof or floor plate forming the structure of the vehicle. Advantageously, the back frame and the lower and upper fixing means are adapted to form means for stiffening a vehicle interior structure. Thus, the back frame connecting a lower structural element to an upper structural element of the vehicle allows reinforcement of the vehicle structure. The rigidity of the vehicle is improved, especially in torsion. The resistance of the passenger compartment in the event of an impact is increased and the protection of the occupants is improved. In order to preserve a backrest adjustment, it is possible to provide a backrest upholstery mounted vertically movable on the backrest frame. In one embodiment, the back frame is fixed directly to a lower structural element by the lower fixing means. A seat frame can be mounted vertically movable relative to the back frame and / or movable in rotation about a horizontal axis. In another embodiment, a seat frame is rigidly fixed to the back frame, and the lower fixing means rigidly connect the seat frame to a lower structural element of a passenger compartment, the frame seat, the back frame and the lower and upper fixing means being adapted to form means for stiffening a cabin structure of the vehicle. The seat and back frames can be fully formed. Advantageously, the lower fixing means comprise a single foot supporting the seat, said foot being able to be rigidly fixed on a lower element of the cabin structure.
L'unique pied permet de ménager un espace pour les pieds de passager situés sur une rangée arrière de sièges. Dans un mode de réalisation, les moyens supérieurs de fixation comprennent au moins un bras supérieur s' étendant à partir d'une partie supérieure de l'armature de dossier et pouvant être fixé rigidement du côté opposé à un élément supérieur de structure d'habitacle. Avantageusement, le siège est muni d'au moins trois points d'attache pour une ceinture de sécurité. La rigidité conférée au siège par les fixations supérieure et inférieure permet au dossier de résister à F effort dé traction exercé par la ceinture de sécurité sur la partie supérieure de dossier lorsque le passager est projeté vers F avant. L'invention concerne également un véhicule automobile comprenant au moins un siège selon un aspect de l'invention. L'armature de dossier du siège peut être fixée rigidement sur άss traverses inférieures, sur une poutre centrale inférieure sur un longeron inférieur, et/ou sur une section inférieure d'un montant de la structure du véhicule. De façon similaire, la partie supérieure de armature de dossier peut être fixée rigidement sur une traverse supérieure, sur une poutre centrale supérieure, sur un longeron supérieur et/ou sur une portion supérieure d'un montant du véhicule. L'armature de dossier étant fixe, et notamment lorsque le siège est destiné au conducteur, on peut prévoir un poste de commande mobile selon un axe longitudinal relativement au siège afin de permettre un réglage de la position de conduite. La présente invention et ses avantages seront mieux compris à l'étude de la description détaillée de modes de réalisation pris à titre d'exemples nullement limitatifs, et illustrés par des figures sur lesquelles : - la figure 1 représente «ne vue schématique en coupe longitudinale de rhabitacle d'un véhicule automobile muni d'un siège selon un aspect de l'invention; - la figure 2 représente une vue en coupe transversale partielle selon ÎÎ-II de l'habitacle de véhicule automobile muni du siège, selon la figure 1; et - la figure 3 représente une vue schématique de côté d'un siège selon un aspect de l'invention. Sur la figure l, un habitacle 1 d'un véhicule automobile représenté partiellement est délimité par un plancher 2, un tableau de bord 3 muni d'un volant 4, un pare-brise avant 5 et un toit 6. Un siège avant de conducteur référencé 7 dans son ensemble est disposé face au volant 4 et situé devant une rangée de siège arrière (non représentée). Le siège ? comprend une assise 8 et un dossier 9. Une armature du siège 7 est représentée en traits forts, un atelassage ou garniture du siège 7 étant délimité par des traits en pointillés. L'armature du siège 7 comprend une armature d'assise 10 s'écendant sensiblement horizontalement en étant légèrement inclinée vers l'arrière et une armature de dossier 11 s' étendant sensiblement verticalement en étant sensiblement inclinée vers F arrière. Les armatures de dossier l ï et d'assise 10 sont fixée mutuellement de façon rigide. L'armature est ici monobloc. L'armature d'assise 10 est fixée rigidement au plancher 2 par l'intermédiaire de moyens inférieurs de fixation sous la forme d'un plot centrai ou pied central 12 et d'une plaque inférieure 13, le pied 12 présentant une extrémité supérieure fixée à une région centrale de l'armature d'assise 10 et une extrémité inférieure fixée rigidement à la plaque inférieure 13, cette dernière étant elle-même fixée rigidement sur le plancher 2 de Fhabitacle, L'armature de dossier 11 et l'armature d'assise 10 sont reliées par une portion de liaison courbe 14 formant une liaison rigide entre armature de dossier 11 et l'armature d'assise 10. l'armature de dossier 11 est munie à son extrémité supérieure d'un bras de fixation 15 s'étendant vers le haut à partir du bord supérieur de la portion d'appui 11, l'extrémité 16 du bras 15 opposé à la portion d'appui 11 étant fixée rigidement à un élément supérieur de structure du véhicule. Comme on peut mieux le voir sur la figure 2, l'extrémité supérieure du bras 15 est fixée sur un longeron supérieur 17 du véhicule, c'est-à-dire un élément longitudinal de structure du véhicule délimitant un bord supérieur du toit 6. L'habitacle 1 est limité latéralement par un montant 18 situé sensiblement à côté du dossier 9 du siège 7, Un tel montant 18, nommé « pied-milieu », est généralement disposé entre une ouverture de porte arrière et une ouverture de porte avant formées dans la structure du véhicule. Un tel montant contribue à la rigidité de la structure du véhicule automobile, malgré les ouvertures nécessaires pour l'accès aux places avant et arrière. Comme cela apparaît mieux sur la figure 2 où le siège 7 a été représenté sans matelassage, l'armature de dossier 11 comprend deux montants latéraux 19, 20, une traverse inférieure 21, une traverse intermédiaire 22, et une traverse supérieure 23. Une portion de logement 24 est formée à l'intersection du montant 20 situé du côté du pied-milieu 18 et de la traverse supérieure 23 de F armature de la portion d'appui 11. La portion de logement 24 se présente sous la forme d'un cadre de profil sensiblement carré permettant le logement et la fixation d'un enrouleur de ceinture de sécurité non représenté, pour former un point d'attache haut d'une ceinture de sécurité embarquée sur le siège 7, qui est également muni de moyens d'attache inférieure sous la forme d' une première patte de fixation 21a prévue à l'extrémité latérale de la traverse inférieure 21, du côté du pied-milieu 18, et une seconde patte de fixation 2ib prévue à l'extrémité opposée de la traverse inférieure 21 de Farmature de dossier 11. La première patte 21a est prévue pour une fixation permanente d'une extrémité d'une ceinture de sécurité, l'autre patte 21b étant prévue pour la fixation d'un dispositif de fixation amovible d'un portion intermédiaire de la ceinture de sécurité. Une ceinture de sécurité s'όtendant entre les différents points d'attache est schématisée en traits mixtes C. L'armature de dossier 11 comprend une branche sensiblement verticale 25 reliant le bras 15 au cadre 24 et une branche oblique 26 reliant le bras 15 sensiblement, au milieu de la traverse supérieure 23 de la portion d'appui 11. On comprend que le siège, pourvu que Farmature et les fixations soient appropriées, c'est-à-dire qu'elle sont suffisamment résistantes, contribue à augmenter la rigidité du la structure du véhicule en formant un élément de rigidification entre un élément inférieur de structure et un élément supérieur de structure. Si la rigidité conférée par le siège à la structure est suffisante, on peut supprimer le pied milieu qui est alors remplacé par Farmature du siège. Ainsi, un accès aux sièges est dégagé et facilité pour les occupants. Bien entendu, Farmature d'assise du siège, au Heu d'être fixée sur un plancher 2, peut être fixée sur des traverses inférieures de rigidification (non représentée) disposées transversalement en travers du plancher, On peut aussi envisager un pied oblique ou horizontal reliant un côté de Farmature d'assise à une traverse inférieure, à une extrémité inférieure du montant vertical, à une poutre centrale inférieure ou à un longeron inférieur (non représenté), pour dégager mieux encore l'espace sous le siège pour les pieds des passagers. De même, on pourrait prévoir que le bras 15 soit fixé par son extrémité supérieure à un autre élément qu'un longeron, comme une poutre centrale supérieure, une traverse supérieure de rigidification (non représentée), une extrémité supérieure du montant 18 ou directement le toit 6. Sur la figure 3, où les références aux éléments semblables à ceux des figures l et 2 on été reprises, un siège 7 comprend un dossier 9 comportant une armature de dossier 11 munie d'un bras 15 fixé rigidement à un longeron 17 d'une partie supérieure de la structure d'un véhicule automobile. L'armature de dossier se prolonge vers le bas par une extension inférieure 27 qui est rigidement liée à un plancher 2 du véhicule automobile. Une garniture de dossier 28 est prévue sur un côté de Farmature de dossier 11. Cette garniture peut être fixe sur F armature d'assise 11, ou déplaçable verticalement, comme illustré par la flèche D, Le siège 7 comprend en outre une armature d'assise 10 comprenant une extrémité fixée à Farmature de dossier 11 en dessous de la garniture de dossier 28 et s'étendant sensiblement perpendiculairement à Farmature de doss-er 11. L'armature d'assise 10 porte sur une surface supérieure une garniture d'assise 29, L' armature d'assise 10 peut être fixée rigidement à Farmature de dossier 11, en étant par exemple formée intégralement à cette dernière, ou montée mobile selon un axe horizontal 30 (perpendiculaire au pian de la figureThe single leg provides space for the passenger feet located in a rear row of seats. In one embodiment, the upper fixing means comprise at least one upper arm extending from an upper part of the back frame and can be rigidly fixed on the side opposite to an upper element of the passenger compartment structure. . Advantageously, the seat is provided with at least three attachment points for a seat belt. The rigidity imparted to the seat by the upper and lower fasteners allows the backrest to withstand the tensile force exerted by the seat belt on the upper part of the backrest when the passenger is thrown forward. The invention also relates to a motor vehicle comprising at least one seat according to one aspect of the invention. The seat back frame can be rigidly fixed on inférieuresss lower cross members, on a lower central beam on a lower spar, and / or on a lower section of an upright of the vehicle structure. Similarly, the upper part of the back frame can be rigidly fixed on an upper cross member, on an upper central beam, on an upper spar and / or on an upper portion of a vehicle upright. The backrest frame being fixed, and in particular when the seat is intended for the driver, a mobile control station can be provided along a longitudinal axis relative to the seat in order to allow adjustment of the driving position. The present invention and its advantages will be better understood on studying the detailed description of embodiments taken as in no way limitative examples, and illustrated by figures in which: - Figure 1 represents "a schematic view in longitudinal section of the interior of a motor vehicle fitted with a seat according to one aspect of the invention; - Figure 2 shows a partial cross-sectional view along ÎÎ-II of the passenger compartment of the motor vehicle provided with the seat, according to Figure 1; and - Figure 3 shows a schematic side view of a seat according to one aspect of the invention. In FIG. 1, a passenger compartment 1 of a partially represented motor vehicle is delimited by a floor 2, a dashboard 3 provided with a steering wheel 4, a front windshield 5 and a roof 6. A driver's front seat referenced 7 as a whole is arranged facing the steering wheel 4 and located in front of a row of rear seats (not shown). Headquarters ? comprises a seat 8 and a backrest 9. A frame of the seat 7 is shown in strong lines, a landing or lining of the seat 7 being delimited by dotted lines. The seat frame 7 comprises a seat frame 10 extending substantially horizontally while being slightly inclined towards the rear and a back frame 11 extending substantially vertically while being substantially inclined towards the rear. The backrest and seat frames 10 are rigidly fixed to each other. The frame is here in one piece. The seat frame 10 is rigidly fixed to the floor 2 by means of lower fixing means in the form of a central block or central foot 12 and a lower plate 13, the foot 12 having a fixed upper end to a central region of the seat frame 10 and a lower end rigidly fixed to the lower plate 13, the latter itself being rigidly fixed to the floor 2 of the passenger compartment, The back frame 11 and the seat frame 10 are connected by a curved connection portion 14 forming a rigid connection between the back frame 11 and the seat frame 10. the back frame 11 is provided with its upper end of a fixing arm 15 extending upwards from the upper edge of the support portion 11, the end 16 of the arm 15 opposite the support portion 11 being rigidly fixed to an element vehicle structure superior. As can best be seen in FIG. 2, the upper end of the arm 15 is fixed to an upper spar 17 of the vehicle, that is to say a longitudinal structural element of the vehicle delimiting an upper edge of the roof 6. The passenger compartment 1 is bounded laterally by an upright 18 located substantially next to the backrest 9 of the seat 7. Such an upright 18, called "middle foot", is generally disposed between a rear door opening and a front door opening formed in the vehicle structure. Such an amount contributes to the rigidity of the structure of the motor vehicle, despite the openings necessary for access to the front and rear seats. As appears better in FIG. 2 where the seat 7 has been shown without padding, the back frame 11 comprises two lateral uprights 19, 20, a lower cross member 21, an intermediate cross member 22, and an upper cross member 23. A portion housing 24 is formed at the intersection of the upright 20 located on the side of the center leg 18 and the upper cross member 23 of the frame of the support portion 11. The housing portion 24 is in the form of a substantially square profile frame for housing and fixing a seat belt retractor not shown, to form a top attachment point of a seat belt on board the seat 7, which is also provided with means of lower clip in the form of a first fixing tab 21a provided at the lateral end of the lower cross member 21, on the side of the center leg 18, and a second fixing tab 2ib provided at the opposite end of the lower cross member 21 of the backrest frame 11. The first tab 21a is provided for permanent fixing of one end of a seat belt, the other tab 21b being provided for fixing a removable fixing device d 'an intermediate portion of the seat belt. A seat belt extending between the various attachment points is shown in dashed lines C. The back frame 11 comprises a substantially vertical branch 25 connecting the arm 15 to the frame 24 and an oblique branch 26 connecting the arm 15 substantially , in the middle of the upper cross member 23 of the support portion 11. It is understood that the seat, provided that the frame and the fastenings are suitable, that is to say that they are sufficiently resistant, contributes to increasing the rigidity of the structure of the vehicle by forming a stiffening element between a lower structural element and an upper structural element. If the rigidity imparted by the seat to the structure is sufficient, the middle leg can be eliminated, which is then replaced by the seat frame. Thus, access to the seats is clear and easier for the occupants. Of course, the seat seat frame, instead of being fixed on a floor 2, can be fixed on lower stiffening crosspieces (not shown) arranged transversely across the floor, we can also consider an oblique or horizontal foot connecting one side of the seat frame to a lower cross member, to a lower end of the vertical upright, to a lower central beam or to a lower spar (not shown), to further clear the space under the seat for the feet of the passengers. Likewise, provision could be made for the arm 15 to be fixed by its upper end to another element than a spar, such as an upper central beam, an upper stiffening crosspiece (not shown), an upper end of the upright 18 or directly the roof 6. In FIG. 3, where the references to elements similar to those of FIGS. 1 and 2 have been repeated, a seat 7 comprises a backrest 9 comprising a backrest frame 11 provided with an arm 15 rigidly fixed to a spar 17 of an upper part of the structure of a motor vehicle. The back frame extends downward through a lower extension 27 which is rigidly connected to a floor 2 of the motor vehicle. A backrest cover 28 is provided on one side of the backrest frame 11. This cover can be fixed on the seat frame 11, or vertically movable, as illustrated by arrow D, The seat 7 further comprises a seat frame seat 10 comprising one end fixed to the backrest frame 11 below the backrest cover 28 and extending substantially perpendicular to the backrest frame 11. The seat frame 10 carries a seat cover on an upper surface 29, The seat frame 10 can be rigidly fixed to the backrest frame 11, for example being formed integrally with the latter, or mounted movable along a horizontal axis 30 (perpendicular to the plane of the figure
3), de façon à permettre un réglage de l'inclinaison d'assise ou pour rabattre l'assise contre le dossier, selon un mouvement indiqué par la flèche R, On pourra éventuellement prévoir un pied repliable permettant de soutenir une extrémité libre de l'assise en position d'utilisation, comme représenté en pointillés sous la référence 31 et par la flèche P, sur la figure 3, On peut aussi prévoir que Farmature d'assise 10 soit montée mobile verticalement selon la flèche D sur l'armature de dossier 11 de façon à permettre un réglage de la hauteur d' assise. Dans ce mode de réalisation, Farmature de dossier est fixée directement de façon rigide à des éléments supérieurs et inférieurs de structure du véhicule, de sorte que Farmature de dossier elle-même peut contribuer à renforcer la structure du véhicule automobile. Dans ce cas également, Farmature de dossier du siège, au lieu d'être fixée sur un plancher 2, peut être fixée sur des traverses inférieures de rigidification (non représentée) disposées transversalement en travers du plancher. On peut aussi envisager une extension inférieure 27 oblique ou horizontal reliant Farmature de dossier à une traverse inférieure, à une extrémité inférieure du montant vertical, à une poutre centrale inférieure ou à un longeron inférieur (non représenté), pour dégager mieux encore l'espace sous le siège pour les pieds des passagers. De môme, on pourrait prévoir que le bras 15 soit fixé par son extrémité supérieure à un autre élément qu'un longeron, comme une poutre centrale supérieure, une traverse supérieure de rigidification (non représentée), «ne extrémité supérieure du montant 18 ou directement le toit 6, Grâce à l'invention, on obtient un siège permettant d'alléger armature d'un siège tout en augmentant la rigidité du siège, notamment en cas de choc, L'armature de siège allégée permet de préserver l'espace habitable d'un habitacle du véhicule automobile, notamment pour des passagers arrière. Le siège peut être utilisé pour rigidifier la structure du véhicule automobile dans son ensemble- 3), so as to allow an adjustment of the seat inclination or to fold the seat against the backrest, according to a movement indicated by the arrow R, It will be possible optionally to provide a folding foot making it possible to support a free end of the 'seat in position of use, as shown in dotted lines under the reference 31 and by the arrow P, in Figure 3, We can also provide that the seat frame 10 is mounted vertically movable according to arrow D on the frame backrest 11 so as to allow adjustment of the seat height. In this embodiment, the backrest frame is rigidly fixed directly to upper and lower elements of vehicle structure, so that the backrest frame itself can help strengthen the structure of the motor vehicle. In this case also, the seat back frame, instead of being fixed on a floor 2, can be fixed on lower stiffening crosspieces (not shown) arranged transversely across the floor. One can also consider a lower oblique or horizontal extension 27 connecting the backrest frame to a lower cross member, at a lower end of the vertical upright, to a lower central beam or to a lower spar (not shown), to further clear the space. under the seat for the feet of the passengers. Likewise, provision could be made for the arm 15 to be fixed by its upper end to another element than a spar, such as an upper central beam, an upper stiffening cross member (not shown), “do the upper end of the upright 18 or directly the roof 6, thanks to the invention, a seat is obtained which makes it possible to lighten the frame of a seat while increasing the rigidity of the seat, in particular in the event of an impact, the lightened seat frame makes it possible to preserve the habitable space of a passenger compartment of the motor vehicle, in particular for rear passengers. The seat can be used to stiffen the structure of the whole motor vehicle-

Claims

REVENDICATIONS
1. Siège avant pour véhicule automobile, ledit siège comprenant une armature de dossier (11), caractérisé par le fait qu'il comprend des moyens inférieurs de fixation (12» 13) pour fixer rigidement Farmature de dossier (11) sur un élément inférieur (2) de structure d'un habitacle, et des moyens supérieurs de fixation (15) pour fixer rigidement une partie supérieure de Farmature de dossier â un élément supérieur (17) de structure d'un habitacle. 1. Front seat for a motor vehicle, said seat comprising a back frame (11), characterized in that it comprises lower fixing means (12 "13) for rigidly fixing the back frame (11) on a lower element (2) of the structure of a passenger compartment, and upper fixing means (15) for rigidly fixing an upper part of the backrest frame to an upper element (17) of the structure of a passenger compartment.
2. Siège selon la revendication 1, caractérisé par le fait que l'armature de dossier et les moyens inférieurs et supérieurs de fixation sont adaptés pour former des moyens de rigidification d'une structure d'habitacle du véhicule. 2. Seat according to claim 1, characterized in that the back frame and the lower and upper fixing means are adapted to form means for stiffening a passenger compartment structure of the vehicle.
3. Siège selon l'une des revendications 1 ou 2, caractérisé en ce qu'une garniture de dossier est montée mobile verticalement sur Farmature de dossier. 3. Seat according to one of claims 1 or 2, characterized in that a backrest cover is mounted vertically movable on the backrest frame.
4. Siège selon l'une des revendications précédentes, caractérisé en ce qu'une armature d'assise est déplaçable verticalement relativement à armature de dossier. 4. Seat according to one of the preceding claims, characterized in that a seat frame is movable vertically relative to the back frame.
5. Siège selon l'une des revendications précédentes, caractérisé en ce qu'une armature d'assise est mobile en rotation selon un axe. horizontal relativement à Farmature de dossier5. Seat according to one of the preceding claims, characterized in that a seat frame is movable in rotation about an axis. horizontal relative to Backrest frame
6. Siège selon Vu β quelconque des revendications ρrécédentes5 caractérisé par le fait qu'une armature d'assise (10) est fixée rigidement à Farmature de dossier (11), les moyens inférieurs de fixation reliant rigidement Farmature d'assise (10) sur un élément inférieur (2) de structure d'un habitacle, l' armature d'assise, Farmature de dossier et les moyens inférieurs et supérieurs de fixation étant adaptés peur former des moyens de rigidification d'une structure d'habitacle du véhicule. 6. Seat according to Vu β any of the preceding claims 5 characterized in that a seat frame (10) is rigidly fixed to the back frame (11), the lower fixing means rigidly connecting the seat frame (10) on a lower element (2) of the structure of a passenger compartment, the seat frame, the backrest frame and the lower and upper fixing means being adapted to form means of stiffening a passenger compartment structure of the vehicle.
7. Siège selon la revendication- 6, caractérisé par le fait que les armatures . d'assise (10) et de dossier (11) sont formées intégralement. 7. Seat according to claim- 6, characterized in that the frames. seat (10) and backrest (11) are formed integrally.
8. Siège selon l'une des revendications 6 ou 7, caractérisé en ce que les moyens inférieurs de fixation comprennent un unique pied8. Seat according to one of claims 6 or 7, characterized in that the lower fixing means comprise a single foot
(12) supportant armature d'assise, ledit pied (12) pouvant être fixé rigidement sur un élément inférieur de structure d'habitacle, (12) supporting the seat frame, said foot (12) being able to be rigidly fixed on a lower element of the passenger compartment structure,
9. Siège selon l'une quelconque des revendications précédentes, caractérisé par le fait que les moyens supérieurs de fixation comprennent au moins un bras supérieur (15) s'étendant à partir d'une partie supérieure de Farmature de dossier (11) et pouvant être fixé rigidement du côté opposé à un élément supérieur (17) de structure d'habitacle, 9. Seat according to any one of the preceding claims, characterized in that the upper fixing means comprise at least one upper arm (15) extending from an upper part of the backrest frame (11) and capable of be rigidly fixed on the opposite side to an upper element (17) of the passenger compartment structure,
10. Siège selon l'une quelconque dm revendications précédentes, caractérisé par le fait qu'il est muni d'au moins trois points d'attache pour une ceinture de sécurité (C). il. Véhicule automobile (1), caractérisé par le fait qu'il comprend au moi as- un . siège selon Fune quelconque des revendications précédentes, 12. Véhicule selon la revendication 11, caractérisé par le fait u les moyens inférieurs de fixation sont fixés rigidement sur des traverses inférieures, sur une poutre centrale inférieure, sur un longeron inférieur et/ou une portion inférieure d'un montant de la structure du véhicule. 13. Véhicule selon Fune quelconque des revendications 11 ou10. Seat according to any one of the preceding claims, characterized in that it is provided with at least three attachment points for a seat belt (C). he. Motor vehicle (1), characterized in that it includes the ego as- one . seat according to any one of the preceding claims, 12. Vehicle according to claim 11, characterized in that the lower fixing means are rigidly fixed on lower crossmembers, on a lower central beam, on a lower spar and / or a lower portion amount of the vehicle structure. 13. Vehicle according to any of claims 11 or
12, caractérisé par le fait que les moyens supérieurs de fixation sont fixés rigidement sur une traverse supérieure, sur une poutre centrale supérieure, sur un longeron supérieur (17) et/ou sur une portion, inférieure d'un montant de la structure du véhicule. 14. Véhicule selon l'une quelconque des revendications 11 à12, characterized in that the upper fixing means are rigidly fixed on an upper cross member, on an upper central beam, on an upper spar (17) and / or on a lower portion of an upright of the vehicle structure . 14. Vehicle according to any one of claims 11 to
13, caractérisé par le fait qu'il comprend un poste de commande mobile selon un axe longitudinal relativement au siège. 13, characterized in that it comprises a mobile control station along a longitudinal axis relative to the seat.
EP04819270A 2003-11-19 2004-09-24 Seat for a motor vehicle, and motor vehicle equipped with this seat Withdrawn EP1687179A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0313551A FR2862260B1 (en) 2003-11-19 2003-11-19 SEAT FOR A MOTOR VEHICLE AND A MOTOR VEHICLE EQUIPPED WITH SUCH A SEAT
PCT/FR2004/050460 WO2005051703A1 (en) 2003-11-19 2004-09-24 Seat for a motor vehicle, and motor vehicle equipped with this seat

Publications (1)

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EP1687179A1 true EP1687179A1 (en) 2006-08-09

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ID=34508586

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EP04819270A Withdrawn EP1687179A1 (en) 2003-11-19 2004-09-24 Seat for a motor vehicle, and motor vehicle equipped with this seat

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US (1) US20070108811A1 (en)
EP (1) EP1687179A1 (en)
JP (1) JP2007513000A (en)
FR (1) FR2862260B1 (en)
WO (1) WO2005051703A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2885088B1 (en) * 2005-05-02 2009-02-13 Renault Sas SEAT ASSEMBLY FOR MOTOR VEHICLE
SE1100783A1 (en) * 2011-10-21 2013-04-22 Clean Motion Ab Driver's seat for a smaller and light vehicle
US9789840B2 (en) * 2016-03-18 2017-10-17 Ford Global Technologies, Llc Downwardly inflatable vehicle airbag
US11312265B2 (en) * 2019-01-23 2022-04-26 Iwan LIONG Seating arrangement for vehicle

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Publication number Priority date Publication date Assignee Title
US3762505A (en) * 1971-12-01 1973-10-02 S Morse Device for reducing severity of impact forces
JPS6194829A (en) * 1984-10-15 1986-05-13 Toyoda Autom Loom Works Ltd Automobile
FR2632580B1 (en) * 1988-06-08 1990-09-07 Decodts Francis Charles DEVICE WITH RETRACTABLE SEATS FOR VEHICLES
US5501509A (en) * 1994-04-29 1996-03-26 National Seating Company Frame assembly for a vehicle seat
FR2801851B1 (en) * 1999-12-03 2002-02-15 Renault ADJUSTABLE SEAT FOR MOTOR VEHICLE
EP1247724B1 (en) * 2000-10-17 2005-11-30 Ford Global Technologies, LLC Vehicle body structure with a curved side pillar
US7597395B2 (en) * 2002-01-04 2009-10-06 Honda Giken Kogyo Kabushiki Kaisha Vehicle seat

Non-Patent Citations (1)

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Title
See references of WO2005051703A1 *

Also Published As

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FR2862260B1 (en) 2006-02-17
US20070108811A1 (en) 2007-05-17
JP2007513000A (en) 2007-05-24
WO2005051703A1 (en) 2005-06-09
FR2862260A1 (en) 2005-05-20

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