EP1928690A1 - Lift-assisting device of a motor vehicle seat for bringing said seat into a jack-knife position - Google Patents

Lift-assisting device of a motor vehicle seat for bringing said seat into a jack-knife position

Info

Publication number
EP1928690A1
EP1928690A1 EP06831228A EP06831228A EP1928690A1 EP 1928690 A1 EP1928690 A1 EP 1928690A1 EP 06831228 A EP06831228 A EP 06831228A EP 06831228 A EP06831228 A EP 06831228A EP 1928690 A1 EP1928690 A1 EP 1928690A1
Authority
EP
European Patent Office
Prior art keywords
seat
spring
floor
vehicle
cross member
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Withdrawn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
EP06831228A
Other languages
German (de)
French (fr)
Inventor
Martial Bouvard
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP1928690A1 publication Critical patent/EP1928690A1/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Withdrawn legal-status Critical Current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
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/30—Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats
    • B60N2/3002—Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats back-rest movements
    • B60N2/3004—Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats back-rest movements by rotation only
    • B60N2/3009—Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats back-rest movements by rotation only about transversal axis
    • B60N2/3011—Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats back-rest movements by rotation only about transversal axis the back-rest being hinged on the cushion, e.g. "portefeuille movement"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/30—Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats
    • B60N2/3038—Cushion movements
    • B60N2/304—Cushion movements by rotation only
    • B60N2/3045—Cushion movements by rotation only about transversal axis
    • B60N2/305—Cushion movements by rotation only about transversal axis the cushion being hinged on the vehicle frame

Definitions

  • the present invention relates to a device for assisting the lifting of a motor vehicle seat to a position in the wallet.
  • a rear seat forming part of the second row of seats behind the first row of the front seats driver and passenger (s) to allow, in the raised position substantially vertical wallet of the rear seat, access by a person in the third row of rear seats or to increase the volume of the trunk to deposit, for example, relatively long objects.
  • the installation of a rear seat of a motor vehicle in a position in the portfolio consists of folding the seat back on the seat of the latter by pivoting about a horizontal transverse axis connecting the backrest to the seat after having unlocked the locking means of the backrest to this seat and to actuate locking means of the seat of the seat to the floor of the vehicle to unlock the seat of the floor and allow the forward tilting of the vehicle seat around a horizontal transverse axis connecting the front of this seat to the floor of the vehicle to bring the seat to a substantially vertical position of clearance of the space between this seat and the third row of rear seats or the trunk of the vehicle in the absence of this third row.
  • Figure 1 is a bottom view in perspective of the seat frame 1 of a vehicle rear seat of the prior art.
  • This seat is fixed to the floor of the vehicle by rear anchoring means 2 known per se, for example of the "ballfix" type, and a tube T substantially in U shape whose ends are articulated to the frame of the seat 1 and allowing the synchronized control of the two anchoring means 2 to unlock the floor of the floor.
  • the frame of the seat 1 is pivotally mounted in front of the vehicle opposite the anchoring means 2 around a transverse horizontal axis X1, X2 connecting the front of the seat to the floor of the vehicle so as to allow the tilting of the seat from its horizontal position to its substantially vertical position behind one of the front seats of the vehicle.
  • the front portion of the frame of the seat 1 is provided with two means 3, for example of the hook type, for removably locking the seat respectively to two horizontal transverse axes (not shown) integral with the floor of the vehicle for allow disassembly of the seat of this floor.
  • the seat frame 1 further comprises two longitudinally spaced rails 4 secured to the floor of the vehicle and constituting fixed slides on which can slide respectively two sliders 5 of the frame of the seat to allow guiding in longitudinal position of the seat in the passenger compartment of the vehicle.
  • a lifter 6 of the seat 1 is manually operable to release the connection between the slides 5 and the slides 4 to allow the longitudinal movement of the seat 1.
  • the seat 1 is also provided with a set with longitudinal arms 7, sleepers 8, 9, parts 10 and longitudinal coil springs R anchored between the two cross members 8, 9, the cross member 8 being connected to both ends of the two arms of lift 7 of the seat 1, for assistance in lifting the latter once unlocked from the floor.
  • the cross member 9 and the parts 10 constitute the so-called synchronizing crossbar of the slideway.
  • the frame of the seat 1 is connected to the back, not shown, of the rear seat so that the backrest can pivot relative to the seat around a transverse horizontal axis, the reference 11 designating a spring to ensure the reminder of the file.
  • This known structure for assisting the lifting of a rear seat of a motor vehicle to a position in the wallet is extremely complex because of its large number of parts which, because they are made of metal, especially steel, increase the weight of the seat, not facilitating the transport of the rear seat once removed from the floor of the vehicle.
  • the complexity of the seat lift assist structure is accompanied by a decrease in its operational reliability.
  • such a lifting aid structure is relatively expensive.
  • the present invention aims to eliminate the above disadvantages of known structures for assisting the lifting of rear seats of vehicles to a position in the wallet.
  • the device for assisting the lifting of a motor vehicle seat to a position in the wallet to which the seat back is folded on its seat and the seat is pivoted towards the front of the vehicle around a transverse axis connecting the front of the seat to the floor of the vehicle to a substantially vertical position of the seat and of the type comprising at least one spring prestressed elastically so as to urge the seat of its normal position substantially horizontal to its vertical position in the seat portfolio, is characterized in that the spring is unique and is mounted integral with a cross member in one piece fixed to the frame of the seat near the pivot axis of the seat. and in that the spring comprises a U-shaped portion projecting from the cross member of the vehicle floor while being in prestressed support on the floor in position horizontal seat to exert the pivoting force of the seat in its raised position substantially vertical.
  • the cross-member comprises two parallel slots perpendicular to the cross-member and in which the two longitudinal branches of the U-shaped portion of the spring when the seat is raised or folded to its horizontal position can be thrown respectively.
  • the two lights are connected to each other by a longitudinal slot of the crosspiece so as to define with the lights an opening in the shape of H.
  • the U-shaped portion of the spring remains in prestressed support on the floor of the vehicle in the raised position of the seat to maintain the seat in its substantially vertical position.
  • the spring comprises two coaxial helical portions extending on either side of the ends of the two longitudinal branches of the spring in opposite directions perpendicularly to these branches and whose respective ends bent at right angles to a same side perpendicular to the cross member are integral with the cross member so that the helical portions of the spring exert a torsional force arming the U-shaped portion of the spring bearing on the floor of the vehicle.
  • each helical portion of the spring is trapped in a cage of the crossbar consisting of two legs of the cross folded into one another.
  • each helical portion of the spring is secured to the cross member by an axis housed inside the helical portion, this axis being itself integral with a tab of the cross member.
  • the U-shaped part of the spring is arched so as to define a convex part directed towards the floor of the vehicle.
  • the two longitudinal branches of the U-shaped portion of the spring bear on the ends of the two lights of the crossbar located behind the vehicle and in the raised position of the seat after unlocking the locking means, the two branches of this U-shaped portion are supported on the opposite ends of the two lights.
  • the cross member and the spring form a unitary assembly.
  • Figure 1 is a bottom view in perspective of a rear seat cushioning aid structure of the prior art
  • Figure 2 is a bottom view in perspective of a seating frame of the motor vehicle provided with the device of the invention assists the lifting of the seat portfolio
  • Figure 3 is a side view of a rear seat comprising the seat of Figure 2 occupying its horizontal position anchored to the floor of the vehicle
  • Figure 4 is a side view of the seat of Figure 3 occupying its raised position in the wallet;
  • FIG. 1 is a bottom view in perspective of a rear seat cushioning aid structure of the prior art
  • Figure 2 is a bottom view in perspective of a seating frame of the motor vehicle provided with the device of the invention assists the lifting of the seat portfolio
  • - Figure 3 is a side view of a rear seat comprising the seat of Figure 2 occupying its horizontal position anchored to the floor of the vehicle
  • Figure 4 is a side view of the seat of Figure 3 occupying its raised position in the wallet
  • FIG. 5 is a perspective view of the unitary unit with cross-piece and spring for assisting in raising the seat of FIGS. 3 and 4; and
  • FIG. 6 is a perspective view turned 180 ° of the assembly of FIG. 5.
  • the various parts of the reinforcement structure of the seat 1 represented in FIGS. 2 to 4 which are identical or which perform the same functions as those of the prior art seating structure described in FIG.
  • the seat structure 1 of FIGS. 2 to 4 also comprises, as is known per se, a rear crossmember 12 and a housing assembly 13 and strap 14 carried by the crossmember 12, of which housing 13 is a sheathed cable 15 enabling acting on a mechanism 16 integral with the floor 17 to unlock the slides 5 of their respective slides 4 from the rear of the seat to allow, for example, a passenger located in the rear to gain housing space of its legs or also the unlocking of the anchoring means 2 to switch the seat wallet position.
  • the back 18 of the rear seat of the vehicle is pivotally mounted on the seat 1 about a transverse horizontal axis X3 to allow to adjust the inclination of this folder to a user comfort position such as that shown in Figure 3 and fold back the folder 18 forward horizontally in a tablet position before tilting the seat around the transverse axis X1, X2 towards the front of the vehicle to its position in the wallet to which the seat 1 is substantially vertical, as shown in FIG.
  • the device for assisting the lifting of the seat from its normal position of use of FIG. 3 to its substantially vertical position in the wallet of FIG. 4 comprises a single spring 19 integrally mounted on a cross member in a single room
  • the cross member 20 is secured by its two ends 20a of the seat structure 1 by any suitable means, not shown, such as fixing screws.
  • This crossbar is thus fixed to the seat structure 1 so as to be located near the axis X1, X2 pivoting the seat to the floor 17 in the locked horizontal position of the seat 1.
  • the opening passage the U-shaped portion of the spring 19 comprises two parallel slots 21 extending perpendicularly to the longitudinal direction of the crossmember 20 and in which the two longitudinal legs 22 of the U-shaped portion of the spring 19 can be respectively thrusting during the lifting of the 1 to its substantially vertical position or its folding to its horizontal position locked to the floor 17.
  • the two lumens 21 are connected to one another by a slot 21a extending in the longitudinal direction of the cross member 20 so as to allow the introduction of the connecting branch 23 of the longitudinal branches 22 during assembly of the spring 19 to the cross member 20.
  • the slots 21 and the longitudinal slot 21a of the opening of the cross member 20 define a substantially H-shaped.
  • the U-shaped portion of the spring 19 is arched so as to define by its two longitudinal legs 22 a convex portion facing the floor 17 of the vehicle.
  • the spring 19 further comprises, as best shown in Figure 5, two helical portions 24 extending coaxially on either side of the ends of the two legs 22 of the U-shaped portion of the spring in the opposite direction one of the other and axes perpendicular to the branches 22.
  • the respective ends 25 of the helical portions 24 of the spring 19 are bent at right angles to the same side perpendicular to the longitudinal direction of the cross member 20 and are integral with the latter so that the helical portions 24 of the spring 19 exert a torsional force arming the portion U-shaped support on the floor 17 of the vehicle.
  • each bent end portion 25 of a helical portion 25 of the spring 19 is fixed to the cross member 20 by anchoring this end in an oblong bead 26 of the cross member 20.
  • each helical portion 24 of the spring 19 is secured to the cross member 20 being trapped beneath it considering Figure 2, in a cage of the crossbar 20 consists of two legs 27 of the cross member 20 folded into one another.
  • each helical portion 24 of the spring 19 is secured to the cross member 20 by an axis housed inside the helical portion 24 transversely in the longitudinal direction of the vehicle, this axis being itself integral with a leg of the crossbar 20.
  • the crossbar 20 can be made from a rigid metal flat plate, for example steel.
  • FIGS. 2 and 6 show in strong lines the U-shaped part of the spring 19 which is elastically constrained as far as possible against the floor 17 when the seat occupies its horizontal position locked to the floor and which will determine the desired return force of the 1 to its raised position of the seat when the seat will be unlocked from the floor 17.
  • the representation in phantom of the spring 19 on the cross member 20 corresponds to the position at which the spring remains resting on the floor 17 when the seat is transferred to the wallet as shown in FIG. 4 to ensure that there is no play in the seat occupying this position and also to avoid any beat of the seat.
  • the two longitudinal legs 22 are almost resting on the ends of the slots 21 located behind the vehicle while in the raised position of the seat in the wallet, these two branches are supported on the opposite ends of the lights 21.
  • FIG. 5 represents another position in solid lines of the U-shaped part of the spring 19 and which corresponds to the free state of the spring, that is to say its position which it has during its production.
  • the spring loaded under maximum load bearing on the floor in the locked position of the seat defines the desired return force F2
  • the spring prestressed position in phantom of Figures 2 and 6 defines the effort Fl under said vacuum load resting on the floor of the vehicle in the raised position of the seat of FIG. 4.
  • the device of the invention makes it possible to considerably lighten the seat and, consequently, the seat, by maximum deletion of the metal parts existing in the lifting device of the prior art, which results not only in a simplification of the lift mechanism, but also by easier handling of this seat during the lifting operation to its position in the portfolio and increased reliability.
  • the reduction in the number of pieces is also accompanied by a reduction in the manufacturing costs of the seat.
  • a very appreciable feature of the recall mechanism of the invention relates to the ease of modifying the recall or lift feature of the seat at its portfolio position.
  • a firmer or softer desired booster can be obtained easily by acting on one of the several parameters of the lifting spring and concerning its heat treatment, its stabilization income, the composition of its material, the number of turns of the parts. helicoidal spring, its winding and working angles, the diameter of the spring wire and / or the geometry of the bearing area on the floor of the vehicle.
  • crosspiece and the spring form a unitary assembly facilitates the storage of this assembly and its attachment to the seat structure of the rear seat on the assembly line.

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

Abstract

The invention relates to a device for assisting a motor vehicle seat to be lifted into a jack-knife position. The inventive device is characterised in that it comprises a single lifting spring (19), which is connected to a bar in such a way that they form one integral piece (20) fixed to a backrest frame and which is provided with an U-shaped part which is projected from the bar (20) on the vehicle floor side and is prestressingly supported by said floor in the backrest horizontal position in such a way that a pivoting force is produced on the backrest (1) in the substantially vertical lifted position thereof. Said invention is suitable for the automobile industry.

Description

Dispositif d'aide au relevage d'un siège de véhicule automobile à une position en portefeuille. Device for assisting the lifting of a motor vehicle seat at a position in the wallet.
La présente invention concerne un dispositif d'aide au relevage d'un siège de véhicule automobile à une position en portefeuille.The present invention relates to a device for assisting the lifting of a motor vehicle seat to a position in the wallet.
Elle s'applique en particulier à un siège arrière faisant partie du second rang de sièges en arrière du premier rang des sièges avant conducteur et passager (s) pour permettre, en position relevée sensiblement verticale en portefeuille de ce siège arrière, l'accès par une personne à la troisième rangée de sièges arrière ou d'augmenter le volume du coffre arrière pour y déposer, par exemple, des objets relativement longs.It applies in particular to a rear seat forming part of the second row of seats behind the first row of the front seats driver and passenger (s) to allow, in the raised position substantially vertical wallet of the rear seat, access by a person in the third row of rear seats or to increase the volume of the trunk to deposit, for example, relatively long objects.
La mise en place d'un siège arrière de véhicule automobile dans une position en portefeuille consiste à rabattre le dossier du siège sur l'assise de celui-ci par pivotement autour d'un axe horizontal transversal reliant le dossier à l'assise après avoir déverrouillé les moyens de verrouillage du dossier à cette assise et à actionner des moyens de verrouillage de l'assise du siège au plancher du véhicule pour déverrouiller l'assise du plancher et permettre le basculement vers l'avant du véhicule de l'assise autour d'un axe horizontal transversal reliant l'avant de cette assise au plancher du véhicule pour amener l'assise à une position sensiblement verticale de dégagement de l'espace entre ce siège et la troisième rangée de sièges arrière ou le coffre arrière du véhicule en l'absence de cette troisième rangée.The installation of a rear seat of a motor vehicle in a position in the portfolio consists of folding the seat back on the seat of the latter by pivoting about a horizontal transverse axis connecting the backrest to the seat after having unlocked the locking means of the backrest to this seat and to actuate locking means of the seat of the seat to the floor of the vehicle to unlock the seat of the floor and allow the forward tilting of the vehicle seat around a horizontal transverse axis connecting the front of this seat to the floor of the vehicle to bring the seat to a substantially vertical position of clearance of the space between this seat and the third row of rear seats or the trunk of the vehicle in the absence of this third row.
La figure 1 est une vue de dessous en perspective de l'armature d'assise 1 d'un siège arrière de véhicule de l'art antérieur. Cette assise est fixée au plancher du véhicule par des moyens d'ancrage arrière 2 connus en soi, par exemple, du type "ballfix", et un tube T sensiblement en forme de U dont les extrémités sont articulées à l'armature de l'assise 1 et permettant la commande synchronisée des deux moyens d'ancrage 2 pour déverrouiller l'assise du plancher. L'armature de l'assise 1 est montée pivotante en avant du véhicule à l'opposé des moyens d'ancrage 2 autour d'un axe horizontal transversal Xl, X2 reliant l'avant de l'assise au plancher du véhicule de manière à permettre le basculement de l'assise de sa position horizontale à sa position sensiblement verticale en arrière de l'un des sièges avant du véhicule. La partie avant de l'armature de l'assise 1 est pourvue de deux moyens 3, par exemple du type à crochet, permettant d' amoviblement verrouiller l'assise respectivement à deux axes horizontaux transversaux (non représentés) solidaires du plancher du véhicule pour permettre le démontage du siège de ce plancher.Figure 1 is a bottom view in perspective of the seat frame 1 of a vehicle rear seat of the prior art. This seat is fixed to the floor of the vehicle by rear anchoring means 2 known per se, for example of the "ballfix" type, and a tube T substantially in U shape whose ends are articulated to the frame of the seat 1 and allowing the synchronized control of the two anchoring means 2 to unlock the floor of the floor. The frame of the seat 1 is pivotally mounted in front of the vehicle opposite the anchoring means 2 around a transverse horizontal axis X1, X2 connecting the front of the seat to the floor of the vehicle so as to allow the tilting of the seat from its horizontal position to its substantially vertical position behind one of the front seats of the vehicle. The front portion of the frame of the seat 1 is provided with two means 3, for example of the hook type, for removably locking the seat respectively to two horizontal transverse axes (not shown) integral with the floor of the vehicle for allow disassembly of the seat of this floor.
L'armature d'assise 1 comprend en outre deux rails espacés longitudinaux 4 solidaires du plancher du véhicule et constituant des glissières fixes sur lesquelles peuvent coulisser respectivement deux coulisseaux 5 de l'armature de l'assise pour permettre le guidage en position longitudinale du siège dans l'habitacle du véhicule. Un palonnier 6 de l'assise 1 est manoeuvrable manuellement pour libérer la liaison entre les coulisseaux 5 et les glissières 4 afin d'autoriser le déplacement longitudinal de l'assise 1.The seat frame 1 further comprises two longitudinally spaced rails 4 secured to the floor of the vehicle and constituting fixed slides on which can slide respectively two sliders 5 of the frame of the seat to allow guiding in longitudinal position of the seat in the passenger compartment of the vehicle. A lifter 6 of the seat 1 is manually operable to release the connection between the slides 5 and the slides 4 to allow the longitudinal movement of the seat 1.
L'assise 1 est également pourvue d'un ensemble à bras longitudinaux 7, traverses 8, 9, pièces 10 et ressorts à boudins longitudinaux R ancrés entre les deux traverses 8, 9, la traverse 8 étant reliée aux deux extrémités des deux bras de relevage 7 de l'assise 1, pour l'assistance au relevage de cette dernière une fois déverrouillée du plancher. La traverse 9 et les pièces, 10 constituent la traverse dite de synchronisation de la glissière . L'armature de l'assise 1 est reliée au dossier, non représenté, du siège arrière de manière que le dossier puisse pivoter relativement à l'assise autour d'un axe horizontal transversal, la référence 11 désignant un ressort permettant d'assurer le rappel du dossier.The seat 1 is also provided with a set with longitudinal arms 7, sleepers 8, 9, parts 10 and longitudinal coil springs R anchored between the two cross members 8, 9, the cross member 8 being connected to both ends of the two arms of lift 7 of the seat 1, for assistance in lifting the latter once unlocked from the floor. The cross member 9 and the parts 10 constitute the so-called synchronizing crossbar of the slideway. The frame of the seat 1 is connected to the back, not shown, of the rear seat so that the backrest can pivot relative to the seat around a transverse horizontal axis, the reference 11 designating a spring to ensure the reminder of the file.
Cette structure connue d'aide au relevage d'un siège arrière de véhicule automobile à une position en portefeuille est extrêmement complexe de par son nombre important de pièces qui, du fait qu'elles soient réalisées en métal, notamment en acier, augmentent le poids de l'assise, ne facilitant pas le transport du siège arrière une fois retiré du plancher du véhicule. La complexité de la structure d'aide au relevage du siège s'accompagne d'une diminution de sa fiabilité de fonctionnement. Enfin, une telle structure d'aide au relevage est relativement coûteuse.This known structure for assisting the lifting of a rear seat of a motor vehicle to a position in the wallet is extremely complex because of its large number of parts which, because they are made of metal, especially steel, increase the weight of the seat, not facilitating the transport of the rear seat once removed from the floor of the vehicle. The complexity of the seat lift assist structure is accompanied by a decrease in its operational reliability. Finally, such a lifting aid structure is relatively expensive.
La présente invention a pour but d'éliminer les inconvénients ci-dessus des structures connues d'aide au relevage de sièges arrière de véhicules à une position en portefeuille.The present invention aims to eliminate the above disadvantages of known structures for assisting the lifting of rear seats of vehicles to a position in the wallet.
A cet effet, selon l'invention, le dispositif d'aide au relevage d'un siège de véhicule automobile à une position en portefeuille à laquelle le dossier du siège est rabattu sur son assise et le siège est pivoté vers l'avant du véhicule autour d'un axe transversal reliant l'avant de l'assise au plancher du véhicule à une position sensiblement verticale de l'assise, et du type comprenant au moins un ressort précontraint élastiquement de manière à solliciter l'assise de sa position normale sensiblement horizontale à sa position verticale en portefeuille du siège, est caractérisé en ce que le ressort est unique et est monté solidaire d'une traverse en une seule pièce fixée à l'armature de l'assise à proximité de l'axe de pivotement de l'assise et en ce que le ressort comprend une partie en forme de U faisant saillie de la traverse côté plancher du véhicule en étant en appui précontraint sur le plancher en position horizontale de l'assise pour exercer l'effort de pivotement de l'assise à sa position relevée sensiblement verticale .For this purpose, according to the invention, the device for assisting the lifting of a motor vehicle seat to a position in the wallet to which the seat back is folded on its seat and the seat is pivoted towards the front of the vehicle around a transverse axis connecting the front of the seat to the floor of the vehicle to a substantially vertical position of the seat, and of the type comprising at least one spring prestressed elastically so as to urge the seat of its normal position substantially horizontal to its vertical position in the seat portfolio, is characterized in that the spring is unique and is mounted integral with a cross member in one piece fixed to the frame of the seat near the pivot axis of the seat. and in that the spring comprises a U-shaped portion projecting from the cross member of the vehicle floor while being in prestressed support on the floor in position horizontal seat to exert the pivoting force of the seat in its raised position substantially vertical.
La traverse comprend deux lumières parallèles perpendiculaires à la traverse et dans lesquelles peuvent se débattre respectivement les deux branches longitudinales de la partie en U du ressort lors du relevage de l'assise ou de son rabattement à sa position horizontale . Les deux lumières sont reliées l'une à l'autre par une fente longitudinale de la traverse de manière à définir avec les lumières une ouverture en forme de H.The cross-member comprises two parallel slots perpendicular to the cross-member and in which the two longitudinal branches of the U-shaped portion of the spring when the seat is raised or folded to its horizontal position can be thrown respectively. The two lights are connected to each other by a longitudinal slot of the crosspiece so as to define with the lights an opening in the shape of H.
La partie en U du ressort reste en appui précontraint sur le plancher du véhicule en position relevée du siège pour maintenir l'assise à sa position sensiblement verticale.The U-shaped portion of the spring remains in prestressed support on the floor of the vehicle in the raised position of the seat to maintain the seat in its substantially vertical position.
Le ressort comprend deux parties hélicoïdales coaxiales s 'étendant de part et d'autre des extrémités des deux branches longitudinales du ressort en sens inverse l'une de l'autre perpendiculairement à ces branches et dont leurs extrémités respectives coudées à angle droit d'un même côté perpendiculairement à la traverse sont solidaires de cette traverse de manière que les parties hélicoïdales du ressort exercent un effort de torsion armant la partie en U de ce ressort en appui sur le plancher du véhicule.The spring comprises two coaxial helical portions extending on either side of the ends of the two longitudinal branches of the spring in opposite directions perpendicularly to these branches and whose respective ends bent at right angles to a same side perpendicular to the cross member are integral with the cross member so that the helical portions of the spring exert a torsional force arming the U-shaped portion of the spring bearing on the floor of the vehicle.
Chaque partie hélicoïdale du ressort est emprisonnée dans une cage de la traverse constituée de deux pattes de la traverse repliées l'une dans l'autre. En variante, chaque partie hélicoïdale du ressort est solidarisée à la traverse par un axe logé à l'intérieur de la partie hélicoïdale, cet axe étant lui- même solidaire d'une patte de la traverse.Each helical portion of the spring is trapped in a cage of the crossbar consisting of two legs of the cross folded into one another. Alternatively, each helical portion of the spring is secured to the cross member by an axis housed inside the helical portion, this axis being itself integral with a tab of the cross member.
La partie en U du ressort est cambrée de manière à définir une partie convexe dirigée vers le plancher du véhicule . En position verrouillée de l'assise au plancher par des moyens de verrouillage déverrouillables, les deux branches longitudinales de la partie en U du ressort sont en appui sur les extrémités des deux lumières de la traverse situées en arrière du véhicule et en position relevée du siège après déverrouillage des moyens de verrouillage, les deux branches de cette partie en U sont en appui sur les extrémités opposées des deux lumières .The U-shaped part of the spring is arched so as to define a convex part directed towards the floor of the vehicle. In the locked position of the seat on the floor by releasable locking means, the two longitudinal branches of the U-shaped portion of the spring bear on the ends of the two lights of the crossbar located behind the vehicle and in the raised position of the seat after unlocking the locking means, the two branches of this U-shaped portion are supported on the opposite ends of the two lights.
Avant montage de la traverse à l'armature de l'assise, la traverse et le ressort forment un ensemble unitaire .Before mounting the cross member to the frame of the seat, the cross member and the spring form a unitary assembly.
L'invention sera mieux comprise, et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement dans la description explicative qui va suivre faite en référence aux dessins annexés donnés uniquement à titre d'exemple illustrant un mode de réalisation de l'invention et dans lesquels : la figure 1 est une vue de dessous en perspective d'une structure d'aide au relevage d'assise de siège arrière de l'art antérieur ; la figure 2 est une vue de dessous en perspective d'une armature d'assise de siège du véhicule automobile pourvue du dispositif de l'invention assurant l'aide au relevage du siège en portefeuille ; - la figure 3 est une vue de côté d'un siège arrière comprenant l'assise de la figure 2 occupant sa position horizontale ancrée au plancher du véhicule ; la figure 4 est une vue de côté du siège de la figure 3 occupant sa position relevée en portefeuille ; - la figure 5 est une vue en perspective de l'ensemble unitaire à traverse et ressort d'aide au relevage du siège des figures 3 et 4 ; et la figure 6 est une vue en perspective tournée à 180° de l'ensemble de la figure 5. Les différentes pièces de la structure d'armature de l'assise 1 représentées aux figures 2 à 4 identiques ou accomplissant les mêmes fonctions que celles de la structure d'assise de l'art antérieur décrites en figureThe invention will be better understood, and other objects, characteristics, details and advantages thereof will appear more clearly in the explanatory description which will follow with reference to the accompanying drawings given solely by way of example illustrating an embodiment. of the invention and in which: Figure 1 is a bottom view in perspective of a rear seat cushioning aid structure of the prior art; Figure 2 is a bottom view in perspective of a seating frame of the motor vehicle provided with the device of the invention assists the lifting of the seat portfolio; - Figure 3 is a side view of a rear seat comprising the seat of Figure 2 occupying its horizontal position anchored to the floor of the vehicle; Figure 4 is a side view of the seat of Figure 3 occupying its raised position in the wallet; FIG. 5 is a perspective view of the unitary unit with cross-piece and spring for assisting in raising the seat of FIGS. 3 and 4; and FIG. 6 is a perspective view turned 180 ° of the assembly of FIG. 5. The various parts of the reinforcement structure of the seat 1 represented in FIGS. 2 to 4 which are identical or which perform the same functions as those of the prior art seating structure described in FIG.
1 portent les mêmes références et ne seront pas décrites à nouveau.1 have the same references and will not be described again.
La structure d'assise 1 des figures 2 à 4 comporte également, comme cela est connu en soi, une traverse arrière 12 et un ensemble à boîtier 13 et sangle 14 porté par la traverse 12, duquel boîtier 13 part un câble gainé 15 permettant d'agir sur un mécanisme 16 solidaire du plancher 17 pour déverrouiller les coulisseaux 5 de leurs glissières respectives 4 depuis l'arrière du siège pour permettre, par exemple, à un passager situé à l'arrière de gagner de l'espace de logement de ses jambes ou également le déverrouillage des moyens d'ancrage 2 afin de basculer le siège en position de portefeuille. Le dossier 18 du siège arrière du véhicule est monté pivotant sur l'assise 1 autour d'un axe horizontal transversal X3 pour permettre de régler l'inclinaison de ce dossier à une position de confort de l'utilisateur telle que celle représentée en figure 3 et de rabattre par ailleurs le dossier 18 en avant à l'horizontale dans une position en tablette avant de basculer le siège autour de l'axe transversal Xl, X2 vers l'avant du véhicule à sa position en portefeuille à laquelle l'assise 1 est sensiblement verticale, comme représenté en figure 4.The seat structure 1 of FIGS. 2 to 4 also comprises, as is known per se, a rear crossmember 12 and a housing assembly 13 and strap 14 carried by the crossmember 12, of which housing 13 is a sheathed cable 15 enabling acting on a mechanism 16 integral with the floor 17 to unlock the slides 5 of their respective slides 4 from the rear of the seat to allow, for example, a passenger located in the rear to gain housing space of its legs or also the unlocking of the anchoring means 2 to switch the seat wallet position. The back 18 of the rear seat of the vehicle is pivotally mounted on the seat 1 about a transverse horizontal axis X3 to allow to adjust the inclination of this folder to a user comfort position such as that shown in Figure 3 and fold back the folder 18 forward horizontally in a tablet position before tilting the seat around the transverse axis X1, X2 towards the front of the vehicle to its position in the wallet to which the seat 1 is substantially vertical, as shown in FIG.
Selon l'invention, le dispositif d'aide au relevage du siège de sa position normale d'utilisation de la figure 3 à sa position sensiblement verticale en portefeuille de la figure 4, comprend un seul ressort 19 monté solidairement sur une traverse en une seule pièceAccording to the invention, the device for assisting the lifting of the seat from its normal position of use of FIG. 3 to its substantially vertical position in the wallet of FIG. 4 comprises a single spring 19 integrally mounted on a cross member in a single room
20 et comprenant une partie en forme de U faisant saillie côté plancher 17 du véhicule au travers d'une ouverture de la traverse 20 en étant en appui précontraint sous charge maximum en position verrouillée horizontale de l'assise 1 au plancher 17 de manière à exercer un effort de pivotement de l'assise 1 vers sa position relevée sensiblement verticale de la figure 4 lorsque les moyens d'ancrage 2 sont déverrouillés.20 and comprising a U-shaped portion projecting from the floor 17 of the vehicle through an opening of the crossbar 20 by being in prestressed support under maximum load in the horizontal locked position of the seat 1 to the floor 17 so as to exercise a pivoting force of the seat 1 towards its raised position substantially vertical of Figure 4 when the anchoring means 2 are unlocked.
La traverse 20 est solidaire par ses deux extrémités 20a de la structure d'assise 1 par tout moyen approprié, non représenté, tel que vis de fixation.The cross member 20 is secured by its two ends 20a of the seat structure 1 by any suitable means, not shown, such as fixing screws.
Cette traverse est ainsi fixée à la structure d'assise 1 de manière à être située à proximité de l'axe Xl, X2 de pivotement de l'assise au plancher 17 en position horizontale verrouillée de l'assise 1. L'ouverture de passage de la partie en U du ressort 19 comprend deux lumières parallèles 21 s 'étendant perpendiculairement à la direction longitudinale de la traverse 20 et dans lesquelles peuvent se débattre respectivement les deux branches longitudinales 22 de la partie en U du ressort 19 lors du relevage de l'assise 1 à sa position sensiblement verticale ou de son rabattement à sa position horizontale verrouillée au plancher 17.This crossbar is thus fixed to the seat structure 1 so as to be located near the axis X1, X2 pivoting the seat to the floor 17 in the locked horizontal position of the seat 1. The opening passage the U-shaped portion of the spring 19 comprises two parallel slots 21 extending perpendicularly to the longitudinal direction of the crossmember 20 and in which the two longitudinal legs 22 of the U-shaped portion of the spring 19 can be respectively thrusting during the lifting of the 1 to its substantially vertical position or its folding to its horizontal position locked to the floor 17.
Les deux lumières 21 sont reliées l'une à l'autre par une fente 21a s ' étendant suivant la direction longitudinale de la traverse 20 de manière à permettre l'introduction de la branche 23 de liaison des branches longitudinales 22 lors du montage du ressort 19 à la traverse 20. Ainsi, les lumières 21 et la fente longitudinale 21a de l'ouverture de la traverse 20 définissent une forme sensiblement en H.The two lumens 21 are connected to one another by a slot 21a extending in the longitudinal direction of the cross member 20 so as to allow the introduction of the connecting branch 23 of the longitudinal branches 22 during assembly of the spring 19 to the cross member 20. Thus, the slots 21 and the longitudinal slot 21a of the opening of the cross member 20 define a substantially H-shaped.
La partie en forme de U du ressort 19 est cambrée de manière à définir par ses deux branches longitudinales 22 une partie convexe dirigée vers le plancher 17 du véhicule .The U-shaped portion of the spring 19 is arched so as to define by its two longitudinal legs 22 a convex portion facing the floor 17 of the vehicle.
Le ressort 19 comprend en outre, comme cela ressort mieux de la figure 5, deux parties hélicoïdales 24 s ' étendant coaxialement de part et d'autre des extrémités des deux branches 22 de la partie en U de ce ressort en sens inverse l'une de l'autre et d'axes perpendiculaires aux branches 22. Les extrémités respectives 25 des parties hélicoïdales 24 du ressort 19 sont coudées à angle droit d'un même côté perpendiculairement à la direction longitudinale de la traverse 20 et sont solidaires de cette dernière de manière que les parties hélicoïdales 24 du ressort 19 exercent un effort de torsion armant la partie en forme de U en appui sur le plancher 17 du véhicule.The spring 19 further comprises, as best shown in Figure 5, two helical portions 24 extending coaxially on either side of the ends of the two legs 22 of the U-shaped portion of the spring in the opposite direction one of the other and axes perpendicular to the branches 22. The respective ends 25 of the helical portions 24 of the spring 19 are bent at right angles to the same side perpendicular to the longitudinal direction of the cross member 20 and are integral with the latter so that the helical portions 24 of the spring 19 exert a torsional force arming the portion U-shaped support on the floor 17 of the vehicle.
L'extrémité 25a de chaque partie d'extrémité coudée 25 d'une partie hélicoïdale 25 du ressort 19 est fixée à la traverse 20 par ancrage de cette extrémité dans un crevé oblong 26 de la traverse 20. En outre, chaque partie hélicoïdale 24 du ressort 19 est solidarisée à la traverse 20 en étant emprisonnée sous celle-ci en considérant la figure 2, dans une cage de la traverse 20 constituée de deux pattes 27 de la traverse 20 repliées l'une dans l'autre.The end 25a of each bent end portion 25 of a helical portion 25 of the spring 19 is fixed to the cross member 20 by anchoring this end in an oblong bead 26 of the cross member 20. In addition, each helical portion 24 of the spring 19 is secured to the cross member 20 being trapped beneath it considering Figure 2, in a cage of the crossbar 20 consists of two legs 27 of the cross member 20 folded into one another.
Selon une variante de réalisation non représentée, chaque partie hélicoïdale 24 du ressort 19 est solidarisée à la traverse 20 par un axe logé à l'intérieur de la partie hélicoïdale 24 transversalement à direction longitudinale du véhicule, cet axe étant lui même solidaire d'une patte de la traverse 20.According to an alternative embodiment not shown, each helical portion 24 of the spring 19 is secured to the cross member 20 by an axis housed inside the helical portion 24 transversely in the longitudinal direction of the vehicle, this axis being itself integral with a leg of the crossbar 20.
La traverse 20 peut être réalisée à partir d'une plaque plane rigide métallique, par exemple en acier. Les figures 2 et 6 représentent en trait fort la partie en U du ressort 19 qui est élastiquement contrainte au maximum en appui sur le plancher 17 lorsque l'assise occupe sa position horizontale verrouillée au plancher et qui déterminera l'effort de rappel souhaité de l'assise 1 à sa position relevée du siège lorsque l'assise sera déverrouillée du plancher 17. La représentation en traits mixtes du ressort 19 sur la traverse 20 correspond à la position à laquelle le ressort reste en appui sur le plancher 17 lorsque le siège est basculé en portefeuille comme représenté en figure 4 afin d'assurer toute absence de jeu du siège occupant cette position et d'éviter également tout battement de l'assise. A la position de contrainte maximum du ressort 19, les deux branches longitudinales 22 sont pratiquement en appui sur les extrémités des lumières 21 situées en arrière du véhicule tandis qu'à la position relevée du siège en portefeuille, ces deux branches sont en appui sur les extrémités opposées des lumières 21.The crossbar 20 can be made from a rigid metal flat plate, for example steel. FIGS. 2 and 6 show in strong lines the U-shaped part of the spring 19 which is elastically constrained as far as possible against the floor 17 when the seat occupies its horizontal position locked to the floor and which will determine the desired return force of the 1 to its raised position of the seat when the seat will be unlocked from the floor 17. The representation in phantom of the spring 19 on the cross member 20 corresponds to the position at which the spring remains resting on the floor 17 when the seat is transferred to the wallet as shown in FIG. 4 to ensure that there is no play in the seat occupying this position and also to avoid any beat of the seat. At the maximum stress position of the spring 19, the two longitudinal legs 22 are almost resting on the ends of the slots 21 located behind the vehicle while in the raised position of the seat in the wallet, these two branches are supported on the opposite ends of the lights 21.
La figure 5 représente une autre position en trait fort de la partie en U du ressort 19 et qui correspond à l'état libre du ressort, c'est-à-dire sa position qu'il a lors de sa réalisation. De la sorte, le ressort armé sous charge maximum en appui sur le plancher en position verrouillée de l'assise définit l'effort de rappel F2 souhaité et le ressort précontraint en position en traits mixtes des figures 2 et 6 définit l'effort Fl sous charge dite à vide en appui sur le plancher du véhicule à la position relevée du siège de la figure 4.FIG. 5 represents another position in solid lines of the U-shaped part of the spring 19 and which corresponds to the free state of the spring, that is to say its position which it has during its production. In this way, the spring loaded under maximum load bearing on the floor in the locked position of the seat defines the desired return force F2 and the spring prestressed position in phantom of Figures 2 and 6 defines the effort Fl under said vacuum load resting on the floor of the vehicle in the raised position of the seat of FIG. 4.
Le dispositif de l'invention permet d'alléger considérablement l'assise et, par conséquent, le siège, par suppression maximum des pièces métalliques existant dans le dispositif de relevage de l'art antérieur, ce qui se traduit non seulement par une simplification du mécanisme de relevage, mais également par une manipulation plus aisée de ce siège lors de l'opération de relevage à sa position en portefeuille et un accroissement de sa fiabilité. La réduction du nombre de pièces s'accompagne également d'une diminution des coûts de fabrication de l'assise.The device of the invention makes it possible to considerably lighten the seat and, consequently, the seat, by maximum deletion of the metal parts existing in the lifting device of the prior art, which results not only in a simplification of the lift mechanism, but also by easier handling of this seat during the lifting operation to its position in the portfolio and increased reliability. The reduction in the number of pieces is also accompanied by a reduction in the manufacturing costs of the seat.
La réduction du nombre de pièces rend la structure d'assise moins agressive par rapport aux structures d'assise de l'art antérieur et le bras extérieur utilisé dans les sièges arrière actuels constituant un obstacle à la montée-descente d'une personne du véhicule à l'arrière, est supprimé. Une particularité très appréciable du mécanisme de rappel de l'invention concerne la facilité de modifier la caractéristique de rappel ou de relevage du siège à sa position en portefeuille.The reduction in the number of parts makes the seat structure less aggressive compared to the seating structures of the prior art and the outer arm used in the current rear seats constituting an obstacle to the rise and fall of a person from the vehicle at the back, is deleted. A very appreciable feature of the recall mechanism of the invention relates to the ease of modifying the recall or lift feature of the seat at its portfolio position.
Ainsi, un rappel souhaité plus ferme ou plus moelleux peut être obtenu facilement en agissant sur l'un des multiples paramètres du ressort de relevage et concernant son traitement thermique, son revenu de stabilisation, la composition de sa matière, le nombre de spires des parties hélicoïdales du ressort, ses angles d'armage et de travail, le diamètre du fil du ressort et/ou la géométrie de la zone d'appui sur le plancher du véhicule .Thus, a firmer or softer desired booster can be obtained easily by acting on one of the several parameters of the lifting spring and concerning its heat treatment, its stabilization income, the composition of its material, the number of turns of the parts. helicoidal spring, its winding and working angles, the diameter of the spring wire and / or the geometry of the bearing area on the floor of the vehicle.
Enfin, le fait que la traverse et le ressort constituent un ensemble unitaire, facilite le stockage de cet ensemble et sa fixation à la structure d'assise du siège arrière sur la chaîne de montage. Finally, the fact that the crosspiece and the spring form a unitary assembly facilitates the storage of this assembly and its attachment to the seat structure of the rear seat on the assembly line.

Claims

REVENDICATIONS
1. Dispositif d'aide au relevage d'un siège de véhicule automobile à une position en portefeuille à laquelle le dossier (18) du siège est rabattu sur son assise (1) et le siège est pivoté vers l'avant du véhicule autour d'un axe transversal (Xl , X2) reliant l'avant de l'assise (1) au plancher (17) du véhicule à une position sensiblement verticale de l'assise (1) , comprenant au moins un ressort (19) précontraint élastiquement de manière à solliciter l'assise (1) de sa position normale sensiblement horizontale à sa position verticale en portefeuille du siège, caractérisé en ce que le ressort (19) est unique et est monté solidaire d'une traverse (20) en une seule pièce fixée à l'armature de l'assise (1) à proximité de l'axe de pivotement de l'assise (1) et en ce que le ressort (19) comprend une partie en forme de U faisant saillie de la traverse (20) côté plancher (17) du véhicule en étant en appui précontraint sur le plancher (17) en position horizontale de l'assise (1) pour exercer l'effort de pivotement de l'assise (1) à sa position relevée sensiblement verticale .1. Device for assisting the lifting of a motor vehicle seat to a position in the wallet with the backrest (18) of the seat folded over its seat (1) and the seat is pivoted towards the front of the vehicle around the seat. a transverse axis (X1, X2) connecting the front of the seat (1) to the floor (17) of the vehicle to a substantially vertical position of the seat (1), comprising at least one spring (19) elastically prestressed so as to urge the seat (1) from its normal substantially horizontal position to its upright position in the seat wall, characterized in that the spring (19) is unique and is mounted integral with a cross member (20) in a single piece fastened to the frame of the seat (1) near the pivot axis of the seat (1) and in that the spring (19) comprises a U-shaped portion projecting from the cross member ( 20) on the floor (17) of the vehicle while being in prestressed support on the floor (17) in the horizontal position of the seat (1) for exerting the pivoting force of the seat (1) in its raised position substantially vertical.
2. Dispositif selon la revendication 1, caractérisé en ce que la traverse (20) comprend deux lumières parallèles (21) perpendiculaires à la traverse (20) et dans lesquelles peuvent se débattre respectivement les deux branches longitudinales (22) de la partie en U du ressort (19) lors du relevage de l'assise (1) ou de son rabattement à sa position horizontale.2. Device according to claim 1, characterized in that the cross member (20) comprises two parallel slots (21) perpendicular to the cross member (20) and in which the two longitudinal legs (22) of the U-shaped part are respectively spring (19) when raising the seat (1) or its folding to its horizontal position.
3. Dispositif selon la revendication 2, caractérisé en ce que les deux lumières (21) sont reliées l'une à l'autre par une fente longitudinale (23) de la traverse (20) de manière à définir avec les lumières (21) une ouverture en forme de H.3. Device according to claim 2, characterized in that the two slots (21) are connected to one another by a longitudinal slot (23) of the crossbar (20) so as to define with the lights (21). an opening in the shape of H.
4. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la partie en U du ressort (19) reste en appui précontraint sur le plancher (17) du véhicule en position relevée du siège pour maintenir l'assise (1) à sa position sensiblement verticale . 4. Device according to one of the preceding claims, characterized in that the U-shaped part of the spring (19) remains in prestressed support on the floor (17) of the vehicle in the raised position of the seat to maintain the seat (1) in its substantially vertical position.
5. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le ressort (19) comprend deux parties hélicoïdales coaxiales (24) s 'étendant de part et d'autre des extrémités des deux branches longitudinales (22) du ressort (19) en sens inverse l'une de l'autre perpendiculairement à ces branches et dont leurs extrémités respectives (25) coudées à angle droit d'un même côté perpendiculairement à la traverse (20) sont solidaires de cette traverse de manière que les parties hélicoïdales (24) du ressort (19) exercent un effort de torsion armant la partie en U de celui-ci en appui sur le plancher (17) du véhicule.5. Device according to one of the preceding claims, characterized in that the spring (19) comprises two coaxial helical portions (24) extending on either side of the ends of the two longitudinal branches (22) of the spring (19). ) in opposite directions to each other perpendicular to these branches and whose respective ends (25) bent at right angles to the same side perpendicular to the cross member (20) are integral with this cross member so that the helical parts (24) of the spring (19) exert a torsional force arming the U-shaped portion thereof in support of the floor (17) of the vehicle.
6. Dispositif selon la revendication 5, caractérisé en ce que chaque partie hélicoïdale (24) du ressort (19) est emprisonnée dans une cage de la traverse constituée de deux pattes (27) de la traverse (20) repliées l'une dans l'autre.6. Device according to claim 5, characterized in that each helical portion (24) of the spring (19) is trapped in a cage of the crossbar consists of two legs (27) of the crossbar (20) bent one in the 'other.
7. Dispositif selon la revendication 5, caractérisé en ce que chaque partie hélicoïdale (24) du ressort (19) est solidarisée à la traverse (20) par un axe logé à l'intérieur de la partie hélicoïdale (24), cet axe étant lui-même solidaire d'une patte de la traverse (20) .7. Device according to claim 5, characterized in that each helical portion (24) of the spring (19) is secured to the cross member (20) by an axis housed inside the helical portion (24), this axis being itself secured to a tab of the crossbar (20).
8. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la partie en U du ressort (19) est cambrée de manière à définir une partie convexe dirigée vers le plancher (17) du véhicule.8. Device according to one of the preceding claims, characterized in that the U-shaped portion of the spring (19) is arched so as to define a convex portion facing the floor (17) of the vehicle.
9. Dispositif selon l'une des revendications 2 à 8, caractérisé en ce qu'en position verrouillée de l'assise (1) au plancher (17) par des moyens de verrouillage déverrouillables, les deux branches longitudinales (22) de la partie en U du ressort (19) sont en appui sur les extrémités des deux lumières (21) de la traverse (20) situées en arrière du véhicule et en ce qu'en position relevée du siège après déverrouillage des moyens de verrouillage, les deux branches (22) de cette partie en U sont en appui sur les extrémités opposées des deux lumières (21) . 9. Device according to one of claims 2 to 8, characterized in that in the locked position of the seat (1) to the floor (17) by releasable locking means, the two longitudinal branches (22) of the part U-shaped spring (19) are supported on the ends of the two lights (21) of the crossbar (20) located behind the vehicle and that in position raised from the seat after unlocking the locking means, the two branches (22) of this U-shaped portion are supported on the opposite ends of the two slots (21).
10. Dispositif selon l'une des revendications 2 à 9, caractérisé en ce qu'avant montage de la traverse (20) à l'armature de l'assise (1), la traverse (20) et le ressort (19) forment un ensemble unitaire. 10. Device according to one of claims 2 to 9, characterized in that before mounting the crossbar (20) to the frame of the seat (1), the cross member (20) and the spring (19) form a unitary set.
EP06831228A 2005-09-29 2006-09-25 Lift-assisting device of a motor vehicle seat for bringing said seat into a jack-knife position Withdrawn EP1928690A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0509938A FR2891210B1 (en) 2005-09-29 2005-09-29 DEVICE FOR AIDING THE REARING OF A SEAT OF A MOTOR VEHICLE AT A PORTFOLIO POSITION.
PCT/FR2006/050940 WO2007036669A1 (en) 2005-09-29 2006-09-25 Lift-assisting device of a motor vehicle seat for bringing said seat into a jack-knife position

Publications (1)

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EP1928690A1 true EP1928690A1 (en) 2008-06-11

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EP06831228A Withdrawn EP1928690A1 (en) 2005-09-29 2006-09-25 Lift-assisting device of a motor vehicle seat for bringing said seat into a jack-knife position

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EP (1) EP1928690A1 (en)
CN (1) CN101316737A (en)
BR (1) BRPI0617582A2 (en)
FR (1) FR2891210B1 (en)
WO (1) WO2007036669A1 (en)

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FR3061458B1 (en) * 2017-01-05 2019-11-01 Peugeot Citroen Automobiles Sa ANCHORING DEVICE FOR THE REMOVABLE FIXING OF A CHILD SEAT ON A REAR SEAT OF A FOLDING MOTOR VEHICLE IN A PORTFOLIO.
FR3068651B1 (en) * 2017-07-06 2019-07-19 Psa Automobiles Sa ANCHORING DEVICE FOR THE REMOVABLE FIXING OF A CHILD SEAT ON A REAR SEAT OF A FOLDING MOTOR VEHICLE IN A PORTFOLIO.

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BRPI0617582A2 (en) 2018-07-10
WO2007036669A1 (en) 2007-04-05
FR2891210A1 (en) 2007-03-30
FR2891210B1 (en) 2007-12-21
CN101316737A (en) 2008-12-03

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