EP2054267A2 - Seat with adaptable back allowing a person seated in this seat to adjust said back at its dorsal supports. - Google Patents
Seat with adaptable back allowing a person seated in this seat to adjust said back at its dorsal supports.Info
- Publication number
- EP2054267A2 EP2054267A2 EP07823439A EP07823439A EP2054267A2 EP 2054267 A2 EP2054267 A2 EP 2054267A2 EP 07823439 A EP07823439 A EP 07823439A EP 07823439 A EP07823439 A EP 07823439A EP 2054267 A2 EP2054267 A2 EP 2054267A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- transverse
- seat
- deformable
- actuating member
- rod
- 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- Withdrawn
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
- B60N2/64—Back-rests or cushions
- B60N2/66—Lumbar supports
- B60N2/667—Lumbar supports having flexible support member bowed by applied forces
- B60N2/6671—Lumbar supports having flexible support member bowed by applied forces with cable actuators
Definitions
- the present invention relates to a seat with adaptable backrest for a person sitting in this seat, to adjust said folder at its back supports. It relates more specifically but not exclusively, a car seat designed to allow a person sitting in it to adjust his lumbar support.
- the object of the invention is therefore more particularly to eliminate these drawbacks by proposing a device for adjusting the back supports and in particular the lumbar supports included in a seat and having no cables or mechanical articulation systems, which makes it possible to simplify the structure of the seat. Adjustable back support and reduce manufacturing costs and thus enhance its economic potential.
- the seat is characterized in that it also comprises:
- At least one generally elastic transverse deformable element extending from one lateral upright to the other and which is coupled to adjustment means comprising an actuating member accessible by the person sitting in the seat;
- Means for exerting on the transverse deformable element a force capable of deforming it as a function of the position of said actuating member are fixed to the corresponding lateral upright of the seat by means of a connection means integral with the actuating member and which is capable of exerting a compression of said deformable element, this connecting means being able particularly but not exclusively, to comprise a screw and a nut in which the aforesaid screw is integral with the aforesaid actuating member.
- the aforesaid adjustment means involve a transverse rod which extends from one lateral upright to the other, close to said transverse deformable element and which is rotatably mounted on said uprights.
- This rod one end of which is integral with the aforesaid actuating member, carries at least one eccentric element provided with a cam surface on which said transverse deformable element bears, so that rotation of the rod causes transverse deformation. corresponding said transverse deformable element.
- Each eccentric element may comprise a helical guiding shape such as a notch, which allows following a rotational movement of said eccentric element, to create a compressive force of the portion of said transverse deformable element which is in contact with said helical guide shape.
- the transverse deformable element may be arranged in the bottom of the folder so that it is at the lumbar level of the person sitting in this seat.
- the back of the aforesaid seat is generally covered and preferably a padding and a cap.
- Figure 1 is a schematic representation of the seat according to the invention with a highlighting of the actuating member.
- FIG. 2 is a diagrammatic representation at an opposite angle of the seat according to the invention as represented in FIG.
- Figure 3 is a schematic representation of the device for adjusting the back supports according to an alternative embodiment of the invention.
- Figure 4 is a schematic representation from below of the device for adjusting the back supports as shown in Figure 3, the transverse deformable element being in the curved position.
- the device according to the invention comprises two pairs of flexible transverse wires 1, 1 which are substantially parallel, these transverse wires 3, 3 'constituting in part species said transverse deformable elements 3, 3 'and are in this case elastic.
- These pairs of son 1, which are placed one above the other, are arranged transversely between the lateral uprights 2, 2 'of a seat.
- each pair of transverse yarns 1 delimits at rest, in a horizontal plane, substantially a rectangular shape, each pair of yarns 1, 1 comprising two son 3, 3 'whose ends can be gripped by a deformable piece (not shown) such as a clip, which advantageously allows to adjust the tension of the assembly.
- Each of the transverse son 3, 3 ' can be connected substantially in the middle to the same junction and holding piece 4 having substantially a parallelepiped shape.
- each of the transverse son 3, 3 ' can be connected substantially in the middle to the same junction and holding piece 4 having substantially a parallelepiped shape.
- each anterior transverse wire 3 can be connected to this junction and holding part 4 by passing through a ring 5 included on the front face of this junction and retaining piece 4;
- Each posterior transverse wire 3 ' can be connected to this junction and retaining piece 4 by engaging in an orifice of horizontal axis passing right through this junction and retaining piece 4.
- Each pair of transverse wires 1, 1 ' is connected at its lateral ends to a connecting means 6 arranged against the inner surface of a corresponding amount 2, 2' of the seat, this connecting means 6 being comparable to a nut.
- Each connecting means 6 has in this case substantially the shape of a coated H, and comprises:
- the device according to the invention also comprises an actuating member such as a wheel 9 disposed near the outer surface of one of said lateral uprights 2 so as to be accessible by the person seated in the seat. seat, this wheel 9 being extended by an at least partially threaded rod engaging in the orifice of the lateral upright 2 of the seat and in that 8 of the connecting means 6 corresponding, the other connecting means 6 which is arranged against the inner surface of the other lateral upright 2 'simply to fix the pairs of transverse son 1, the lateral amount 2' audit.
- an actuating member such as a wheel 9 disposed near the outer surface of one of said lateral uprights 2 so as to be accessible by the person seated in the seat. seat, this wheel 9 being extended by an at least partially threaded rod engaging in the orifice of the lateral upright 2 of the seat and in that 8 of the connecting means 6 corresponding, the other connecting means 6 which is arranged against the inner surface of the other lateral upright 2 'simply to fix the pairs of transverse son 1, the lateral amount
- a rotation printed on the wheel 9 makes it possible to cause a displacement of the connecting means 6 towards the other lateral upright 2 'of said seat, which makes it possible to cause compression and bending of each of said transverse wires 3 , 3 'and in particular of said anterior transverse wires 3, the curvature of these transverse wires 3, 3' depending on the rotation printed on the wheel 9.
- the device according to the invention can comprise:
- a deformable transverse element which can be elastic such as a flexible transverse wire 3 placed in front of said rod 10 and which is arranged in the rest position in a plane substantially parallel to the latter, this deformable transverse element 3 comprising respectively at each of its ends , an inverted Z and Z-shaped portion so that the core 13, 14 of each of said Zs is in contact and in the axis of a corresponding notch 12 of an eccentric element 11.
- said deformable transverse element 3 may be one of the transverse elements of a dorsal suspension ply (not shown) extending between the lateral uprights 2, 2 'of the seat back.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Seats For Vehicles (AREA)
Abstract
Seat the back whereof comprises two lateral uprights (2, 2'), characterized in that it also comprises at least one transversal deformable element (3, 3') extending from one lateral upright (2) to the other (2') and which is coupled to adjustment means comprising an actuating member (9) accessible by the person seated in the seat; and means (11) intended to exert on the transversal deformable element (3, 3') a force capable of deforming it according to the position of said actuating member (9).
Description
SIEGE À DOSSIER ADAPTABLE PERMETTANT À UNE PERSONNE ASSISE DANS CE SIÈGE, DE PROCÉDER AU RÉGLAGE DUDIT DOSSIER AU NIVEAU PE SES APPUIS DORSAUX. ADAPTABLE BACKREST FOR A PERSON SITUATED IN THIS SEAT, TO ADJUST THIS BACKREST AT THE LEVEL PE OF THE BACK SUPPORT.
La présente invention a pour objet un siège à dossier adaptable permettant à une personne assise dans ce siège, de procéder au réglage dudit dossier au niveau de ses appuis dorsaux. Elle concerne plus spécifiquement mais non exclusivement, un siège automobile conçu de manière à permettre à une personne assise dans celui-ci de régler ses appuis lombaires.The present invention relates to a seat with adaptable backrest for a person sitting in this seat, to adjust said folder at its back supports. It relates more specifically but not exclusively, a car seat designed to allow a person sitting in it to adjust his lumbar support.
On sait qu'il existe des structures de support ("des nappes de suspension dorsales") intégrées dans des sièges généralement automobiles comportant un cadre qui comprend deux fils métalliques latéraux et une pluralité de fils métalliques transversaux s'étendant entre les deux fils métalliques latéraux, ou un cadre qui comprend une pluralité de fils métalliques transversaux reliés par des éléments de jonction métalliques ou plastiques, ces fils métalliques définissant ainsi l'ossature d'une structure de support de la matelassure d'un siège automobile.It is known that there are support structures ("dorsal suspension plies") incorporated in generally automotive seats comprising a frame which comprises two lateral metal wires and a plurality of transverse metal wires extending between the two lateral metal wires. , or a frame which comprises a plurality of transverse metal wires connected by metal or plastic joining elements, these metal wires thus defining the framework of a structure for supporting the padding of a car seat.
Néanmoins, ces structures de support ne permettent pas spécifiquement à l'utilisateur de procéder à un réglage au niveau de ses appuis dorsaux et notamment lombaires qui constituent la zone dorsale la plus sensible, notamment lors des longs déplacements.However, these support structures do not specifically allow the user to adjust at its back support and lumbar support in particular which form the most sensitive backbone, especially during long trips.
Afin de supprimer cet inconvénient, on a déjà proposé notamment dans la demande de brevet US 2006/0131937, une structure de support du type susdit dans laquelle au moins une série de fils métalliques transversaux présentent
des sinuosités de forme particulière de manière à obtenir des régions expansibles. Dans ces régions expansibles, les fils latéraux de la structure de support sont reliés à l'armature rigide du siège par des moyens de liaison ajustables pouvant consister en des câbles du type Bowden tendus par des actionneurs.In order to eliminate this drawback, a support structure of the above-mentioned type in which at least one series of transverse metal wires have been proposed has been proposed especially in patent application US 2006/0131937. sinuosities of particular shape so as to obtain expandable regions. In these expandable regions, the lateral son of the support structure are connected to the rigid frame of the seat by adjustable connecting means which may consist of Bowden type cables stretched by actuators.
Néanmoins, cette solution souffre d'un inconvénient supplémentaire résultant de sa complexité et du fait que les câbles du type Bowden ne peuvent exercer sur la structure de support qu'un effort de traction. Cette solution ne permet donc d'obtenir qu'une plage de réglage étroite qui ne permet donc pas de satisfaire à l'ensemble des exigences de tous les utilisateurs.However, this solution suffers from an additional disadvantage resulting from its complexity and the fact that Bowden-type cables can only exert on the support structure a tensile force. This solution therefore makes it possible to obtain a narrow adjustment range which does not therefore make it possible to satisfy all the requirements of all the users.
L'invention a donc plus particulièrement pour but de supprimer ces inconvénients en proposant un dispositif de réglage des appuis dorsaux et notamment lombaires compris dans un siège et ne comportant pas de câbles ni de systèmes mécaniques à articulation, ce qui permet de simplifier la structure du support dorsal réglable et de réduire les coûts de fabrication et donc de renforcer son potentiel économique.The object of the invention is therefore more particularly to eliminate these drawbacks by proposing a device for adjusting the back supports and in particular the lumbar supports included in a seat and having no cables or mechanical articulation systems, which makes it possible to simplify the structure of the seat. Adjustable back support and reduce manufacturing costs and thus enhance its economic potential.
À cet effet, elle propose un siège dont le dossier comporte deux montants latéraux. Selon l'invention, le siège est caractérisé en ce qu'il comprend également :For this purpose, it proposes a seat whose backrest comprises two lateral uprights. According to the invention, the seat is characterized in that it also comprises:
• au moins un élément déformable transversal généralement élastique s'étendant d'un montant latéral à l'autre et qui couplé à des moyens de réglage comportant un organe d'actionnement accessible par la personne assise dans le siège ; etAt least one generally elastic transverse deformable element extending from one lateral upright to the other and which is coupled to adjustment means comprising an actuating member accessible by the person sitting in the seat; and
• des moyens destinés à exercer sur l'élément déformable transversal un effort apte à le déformer en fonction de la position dudit organe d'actionnement.
Selon un première variante d'exécution de l'invention, l'une des extrémités de cet élément déformable transversal est fixée au montant latéral correspondant du siège par l'intermédiaire d'un moyen de liaison solidaire de l'organe d'actionnement et qui est apte à exercer une compression dudit élément déformable, ce moyen de liaison pouvant notamment mais non exclusivement, comprendre une vis et un écrou dans laquelle la susdite vis est solidaire du susdit organe d'actionnement.Means for exerting on the transverse deformable element a force capable of deforming it as a function of the position of said actuating member. According to a first variant embodiment of the invention, one of the ends of this transverse deformable element is fixed to the corresponding lateral upright of the seat by means of a connection means integral with the actuating member and which is capable of exerting a compression of said deformable element, this connecting means being able particularly but not exclusively, to comprise a screw and a nut in which the aforesaid screw is integral with the aforesaid actuating member.
De cette façon, une action sur l'organe d'actionnement par la personne assise dans le siège provoque un déplacement transversal du moyen de liaison, engendrant de cette manière une compression de l'élément déformable transversal puis une incurvation de ce dernier. La flèche ainsi créée permet à ladite personne d'adapter la courbure de l'élément déformable ainsi que sa force de réaction exercée contre son dos.In this way, an action on the actuating member by the person sitting in the seat causes a transverse displacement of the connecting means, thereby generating a compression of the transverse deformable element and then a curvature of the latter. The arrow thus created allows said person to adapt the curvature of the deformable element and its reaction force exerted against his back.
Selon un seconde variante d'exécution de l'invention, les susdits moyens de réglage font intervenir une tige transversale qui s'étend d'un montant latéral à l'autre, à proximité dudit élément déformable transversal et qui est montée rotative sur lesdits montants. Cette tige dont une extrémité est solidaire du susdit organe d'actionnement porte au moins un élément excentrique muni d'une surface de came sur laquelle vient porter ledit élément déformable transversal, de manière à ce qu'une rotation de la tige engendre une déformation transversale correspondante dudit élément déformable transversal.According to a second variant embodiment of the invention, the aforesaid adjustment means involve a transverse rod which extends from one lateral upright to the other, close to said transverse deformable element and which is rotatably mounted on said uprights. . This rod, one end of which is integral with the aforesaid actuating member, carries at least one eccentric element provided with a cam surface on which said transverse deformable element bears, so that rotation of the rod causes transverse deformation. corresponding said transverse deformable element.
Chaque élément excentrique peut comprendre une forme de guidage hélicoïdale telle qu'une encoche, qui permet à la suite d'un mouvement de rotation dudit élément excentrique, de créer un effort de compression de la partie dudit élément déformable transversal qui est au contact de ladite forme de guidage hélicoïdale.
De manière avantageuse, l'élément déformable transversal pourra être disposé dans le bas du dossier afin qu'il soit au niveau des lombaires de la personne assise dans ce siège.Each eccentric element may comprise a helical guiding shape such as a notch, which allows following a rotational movement of said eccentric element, to create a compressive force of the portion of said transverse deformable element which is in contact with said helical guide shape. Advantageously, the transverse deformable element may be arranged in the bottom of the folder so that it is at the lumbar level of the person sitting in this seat.
Le dossier du susdit siège est recouvert généralement et de préférence d'une matelassure et d'une coiffe.The back of the aforesaid seat is generally covered and preferably a padding and a cap.
Des modes d'exécution de l'invention seront décrits ci-après, à titre d'exemples non limitatifs, avec référence aux dessins annexés, dans lesquels :Embodiments of the invention will be described below, by way of non-limiting examples, with reference to the accompanying drawings, in which:
La figure 1 est une représentation schématique du siège selon l'invention avec une mise en évidence de l'organe d'actionnement.Figure 1 is a schematic representation of the seat according to the invention with a highlighting of the actuating member.
La figure 2 est une représentation schématique selon un angle opposé, du siège selon l'invention tel que représenté sur la figure 1.FIG. 2 is a diagrammatic representation at an opposite angle of the seat according to the invention as represented in FIG.
La figure 3 est une représentation schématique du dispositif de réglage des appuis dorsaux selon une variante d'exécution de l'invention.Figure 3 is a schematic representation of the device for adjusting the back supports according to an alternative embodiment of the invention.
La figure 4 est une représentation schématique vue de dessous du dispositif de réglage des appuis dorsaux tel que représenté sur la figure 3, l'élément déformable transversal étant en position incurvée.Figure 4 is a schematic representation from below of the device for adjusting the back supports as shown in Figure 3, the transverse deformable element being in the curved position.
A titre d'exemple non limitatif, tel que cela est représenté sur les figures 1 et 2, le dispositif selon l'invention comporte deux paires de fils transversaux flexibles 1, l' sensiblement parallèles, ces fils transversaux 3, 3' constituant en l'espèce lesdits éléments déformables transversaux 3, 3' et sont en l'espèce élastiques. Ces paires de fils 1, l' qui sont placées l'une au - dessus de l'autre, sont disposées transversalement entre les montants latéraux 2, 2' d'un siège. En l'espèce, chaque paire de fils transversaux 1, l' délimite au repos, dans un plan horizontal, sensiblement une forme rectangulaire, chaque paire de fils 1, l'
comprenant deux fils 3, 3' dont les extrémités peuvent être enserrées par une pièce déformable (non représentée) telle qu'une agrafe, ce qui permet de manière avantageuse d'adapter la tension de l'ensemble.By way of nonlimiting example, as represented in FIGS. 1 and 2, the device according to the invention comprises two pairs of flexible transverse wires 1, 1 which are substantially parallel, these transverse wires 3, 3 'constituting in part species said transverse deformable elements 3, 3 'and are in this case elastic. These pairs of son 1, which are placed one above the other, are arranged transversely between the lateral uprights 2, 2 'of a seat. In the present case, each pair of transverse yarns 1 delimits at rest, in a horizontal plane, substantially a rectangular shape, each pair of yarns 1, 1 comprising two son 3, 3 'whose ends can be gripped by a deformable piece (not shown) such as a clip, which advantageously allows to adjust the tension of the assembly.
Chacun des fils transversaux 3, 3' peut être relié sensiblement en son milieu à une même pièce de jonction et de maintien 4 présentant sensiblement une forme parallélépipédique. A titre d'exemple non limitatif :Each of the transverse son 3, 3 'can be connected substantially in the middle to the same junction and holding piece 4 having substantially a parallelepiped shape. By way of non-limiting example:
• chaque fil transversal antérieur 3 peut être relié à cette pièce de jonction et de maintien 4 en passant dans un anneau 5 compris sur la face antérieure de cette pièce de jonction et de maintien 4 ;• each anterior transverse wire 3 can be connected to this junction and holding part 4 by passing through a ring 5 included on the front face of this junction and retaining piece 4;
• chaque fil transversal postérieur 3' peut être relié à cette pièce de jonction et de maintien 4 en s'engageant dans un orifice d'axe horizontal traversant de part en part cette pièce de jonction et de maintien 4.Each posterior transverse wire 3 'can be connected to this junction and retaining piece 4 by engaging in an orifice of horizontal axis passing right through this junction and retaining piece 4.
Chaque paire de fils transversaux 1, l' est reliée au niveau de ses extrémités latérales à un moyen de liaison 6 disposé contre la surface interne d'un montant correspondant 2, 2' du siège, ce moyen de liaison 6 pouvant être assimilé à un écrou.Each pair of transverse wires 1, 1 'is connected at its lateral ends to a connecting means 6 arranged against the inner surface of a corresponding amount 2, 2' of the seat, this connecting means 6 being comparable to a nut.
Chaque moyen de liaison 6 présente en l'espèce sensiblement la forme d'un H couché, et comprend :Each connecting means 6 has in this case substantially the shape of a coated H, and comprises:
• sur sa branche inférieure et supérieure une fente 7 sensiblement horizontale dans laquelle s'engage une extrémité latérale d'une paire de fils transversaux 1, l' ; • un orifice 8 traversant son âme, d'axe sensiblement horizontal, et qui est disposé en regard d'un orifice compris sur le montant latéral 2, 2' correspondant du siège.• on its upper and lower branch a substantially horizontal slot 7 in which engages a lateral end of a pair of transverse son 1, l '; • An orifice 8 passing through its core, of substantially horizontal axis, and which is arranged opposite an orifice included on the corresponding lateral upright 2, 2 'of the seat.
Le dispositif selon l'invention comporte également un organe d'actionnement tel qu'une molette 9 disposée à proximité de la surface externe de l'un desdits montants latéraux 2 de façon à être accessible par la personne assise dans le
siège, cette molette 9 étant prolongée par une tige au moins partiellement filetée s'engageant dans l'orifice du montant latéral 2 du siège et dans celui 8 du moyen de liaison 6 correspondant, l'autre moyen de liaison 6 qui est disposé contre la surface interne de l'autre montant latéral 2' permettant simplement de fixer les paires de fils transversaux 1, l' audit montant latéral 2'.The device according to the invention also comprises an actuating member such as a wheel 9 disposed near the outer surface of one of said lateral uprights 2 so as to be accessible by the person seated in the seat. seat, this wheel 9 being extended by an at least partially threaded rod engaging in the orifice of the lateral upright 2 of the seat and in that 8 of the connecting means 6 corresponding, the other connecting means 6 which is arranged against the inner surface of the other lateral upright 2 'simply to fix the pairs of transverse son 1, the lateral amount 2' audit.
De cette manière, une rotation imprimée à la molette 9 permet de provoquer un déplacement du moyen de liaison 6 en direction de l'autre montant latéral 2' dudit siège, ce qui permet de provoquer une compression et une flexion de chacun desdits fils transversaux 3, 3' et notamment desdits fils transversaux antérieurs 3, l'incurvation de ces fils transversaux 3, 3' dépendant de la rotation imprimée à la molette 9.In this way, a rotation printed on the wheel 9 makes it possible to cause a displacement of the connecting means 6 towards the other lateral upright 2 'of said seat, which makes it possible to cause compression and bending of each of said transverse wires 3 , 3 'and in particular of said anterior transverse wires 3, the curvature of these transverse wires 3, 3' depending on the rotation printed on the wheel 9.
Selon une variante d'exécution, tel que cela est représenté sur les figures 3 et 4, le dispositif selon l'invention peut comprendre :According to an alternative embodiment, as shown in FIGS. 3 and 4, the device according to the invention can comprise:
• au moins une tige 10 disposée transversalement entre les montants latéraux 2, 2' dudit siège et montée rotative sur lesdits montants 2, 2' ; cette tige 10 dont une extrémité est solidaire dudit organe d'actionnement, traverse à proximité de chacune de ses extrémités un élément excentrique 11 présentant une forme sensiblement cylindrique muni d'une surface de came et comprenant en l'espèce une encoche transversale pouvant être ou non hélicoïdale 12 ;• at least one rod 10 disposed transversely between the lateral uprights 2, 2 'of said seat and rotatably mounted on said uprights 2, 2'; this rod 10, one end of which is integral with said actuating member, passes through each of its ends an eccentric element 11 having a substantially cylindrical shape provided with a cam surface and comprising in this case a transverse notch which can be or non-helical 12;
• un élément transversal déformable pouvant être élastique tel qu'un fil transversal flexible 3 placé devant ladite tige 10 et qui est disposé en position de repos dans un plan sensiblement parallèle à cette dernière, cet élément transversal déformable 3 comprenant respectivement à chacune de ses extrémités, une portion en forme de Z et de Z inversé afin que l'âme 13, 14 de chacun desdits Z soit au contact et dans l'axe d'une encoche correspondante 12 d'un élément excentrique 11.
De cette façon, un mouvement de rotation imprimé à ladite tige transversale 10 à l'aide dudit organe d'actionnement qui est disposé à l'une des extrémités de cette dernière, permet une rotation des éléments excentriques 11, ce qui provoque grâce à leur disposition excentrée et à leur surface de came une incurvation dudit élément transversal déformable 3, cette incurvation dépendant ainsi dudit mouvement de rotation initial imprimé à l'organe d'actionnement.A deformable transverse element which can be elastic such as a flexible transverse wire 3 placed in front of said rod 10 and which is arranged in the rest position in a plane substantially parallel to the latter, this deformable transverse element 3 comprising respectively at each of its ends , an inverted Z and Z-shaped portion so that the core 13, 14 of each of said Zs is in contact and in the axis of a corresponding notch 12 of an eccentric element 11. In this way, a rotational movement imparted to said transverse rod 10 by means of said actuating member which is arranged at one end of the latter, allows a rotation of the eccentric elements 11, which causes, thanks to their eccentric arrangement and at their cam surface a curvature of said deformable transverse element 3, this curvature thus depending on said initial rotational movement printed on the actuating member.
De manière avantageuse, ledit élément transversal déformable 3 peut être l'un des éléments transversaux d'une nappe de suspension dorsale (non représentée) s'étendant entre les montants latéraux 2, 2' du dossier du siège.
Advantageously, said deformable transverse element 3 may be one of the transverse elements of a dorsal suspension ply (not shown) extending between the lateral uprights 2, 2 'of the seat back.
Claims
1. Siège dont le dossier comporte deux montants latéraux (2, T), caractérisé en ce qu'il comprend également : • au moins un élément déformable transversal (3, 3') s'étendant d'un montant latéral (2) à l'autre (2') et qui couplé à des moyens de réglage comportant un organe d'actionnement (9) accessible par la personne assise dans le siège ; et1. Seat whose backrest comprises two lateral uprights (2, T), characterized in that it also comprises: at least one transverse deformable element (3, 3 ') extending from a lateral upright (2) to the other (2 ') and which is coupled to adjustment means comprising an actuating member (9) accessible by the person sitting in the seat; and
• des moyens (11) destinés à exercer sur l'élément déformable transversal (3, 3') un effort apte à le déformer en fonction de la position dudit organe d'actionnement (9) ; de plus, les susdits moyens de réglage font intervenir une tige transversale (10) qui s'étend d'un montant latéral (2) à l'autre (2') à proximité dudit élément déformable transversal (3) et qui est montée rotative sur lesdits montants (2, 2') ; cette tige (10) dont une extrémité est solidaire du susdit organe d'actionnement (9) porte au moins un élément excentrique (11) muni d'une surface de came sur laquelle vient porter ledit élément déformable transversal (3) de manière à ce qu'une rotation de la tige (10) engendre une déformation transversale correspondante dudit élément déformable transversal (3).• means (11) for exerting on the transverse deformable element (3, 3 ') a force able to deform according to the position of said actuating member (9); in addition, the aforesaid adjustment means involve a transverse rod (10) extending from one lateral upright (2) to the other (2 ') close to said transverse deformable element (3) and which is rotatably mounted on said amounts (2, 2 '); this rod (10), one end of which is integral with the aforesaid actuating member (9), carries at least one eccentric element (11) provided with a cam surface on which said transverse deformable element (3) bears so that that a rotation of the rod (10) generates a corresponding transverse deformation of said transverse deformable element (3).
2. Siège selon la revendication 1, caractérisé en ce que :Seat according to Claim 1, characterized in that:
• ledit élément excentrique (11) présente une forme sensiblement cylindrique et comprenant une encoche transversale (12) pouvant être hélicoïdale ;Said eccentric element (11) has a substantially cylindrical shape and comprises a transverse notch (12) which can be helical;
• l'élément déformable transversal (3) est placé devant ladite tige (10) et est disposé en position de repos dans un plan sensiblement parallèle à cette dernière, cet élément transversal déformable (3) comprenant respectivement à chacune de ses extrémités, une portion en forme de Z et de Z inversé afin que l'âme (13, 14) de chacun desdits Z soit au contact et dans l'axe desdites encoches (12) d'un élément excentriqueThe transverse deformable element (3) is placed in front of said rod (10) and is placed in the rest position in a plane substantially parallel to the latter, this deformable transverse element (3) comprising at each of its ends, respectively, a portion in the form of Z and Z inverted so that the core (13, 14) of each of said Z is at contact and in the axis of said notches (12) of an eccentric element
(H) ; de cette façon, un mouvement de rotation imprimé à ladite tige transversale (10) à l'aide dudit organe d'actionnement qui est disposé à l'une des extrémités de cette dernière, permet une rotation des éléments excentriques (11), ce qui provoque grâce à leur disposition excentrée et à leur surface de came une incurvation dudit élément transversal déformable (3), cette incurvation dépendant ainsi dudit mouvement de rotation initial imprimé à l'organe d'actionnement.(H); in this way, a rotational movement imparted to said transverse rod (10) by means of said actuating member which is disposed at one end of the latter, allows a rotation of the eccentric elements (11), which by virtue of their eccentric arrangement and their cam surface causes a curvature of said deformable transverse element (3), this curvature thus depending on said initial rotational movement printed on the actuating member.
3. Siège selon l'une des revendications 1 et 2, caractérisé en ce que ledit élément transversal déformable (3) est l'un des éléments transversaux d'une nappe de suspension dorsale s'étendant entre les montants latéraux (2, 2') du dossier du siège.3. Seat according to one of claims 1 and 2, characterized in that said deformable transverse element (3) is one of the transverse elements of a dorsal suspension web extending between the lateral uprights (2, 2 '). ) the seat back.
4. Siège selon l'une des revendications 1 à 3, caractérisé en ce que l'élément déformable transversal (3) est disposé dans le bas du dossier du siège afin qu'il soit au niveau des lombaires de la personne assise dans ce siège. 4. Seat according to one of claims 1 to 3, characterized in that the transverse deformable element (3) is arranged in the bottom of the seat back so that it is at the lumbar level of the person sitting in this seat .
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0607486A FR2905056B1 (en) | 2006-08-24 | 2006-08-24 | ADAPTABLE BACKREST FOR A PERSON SITUATED IN THAT SEAT, TO ADJUST THIS DOSSIER AT THE LEVEL OF ITS BACK SUPPORT |
| PCT/FR2007/001391 WO2008023119A2 (en) | 2006-08-24 | 2007-08-22 | Seat with adaptable back allowing a person seated in this seat to adjust said back at its dorsal supports. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2054267A2 true EP2054267A2 (en) | 2009-05-06 |
Family
ID=37972563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07823439A Withdrawn EP2054267A2 (en) | 2006-08-24 | 2007-08-22 | Seat with adaptable back allowing a person seated in this seat to adjust said back at its dorsal supports. |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2054267A2 (en) |
| FR (1) | FR2905056B1 (en) |
| WO (1) | WO2008023119A2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018202032A1 (en) * | 2018-02-09 | 2019-08-14 | Lear Corporation | SHOCK ABSORPTION FOR A REAR OCCUPANT |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1527147A (en) * | 1967-04-19 | 1968-05-31 | Citroen Sa Andre | Improvements to seats, especially for vehicles |
| DE8702174U1 (en) * | 1987-02-12 | 1987-04-30 | Kemmann & Koch, 5620 Velbert | adjustable back |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3241879A (en) * | 1963-06-10 | 1966-03-22 | Ford Motor Co | Spring seat structure |
| FR2562002B1 (en) * | 1984-03-27 | 1986-08-22 | Peugeot Cycles | DEVICE FOR LOCALLY ADJUSTING THE TENSION OF AN ELASTIC SHEET AND ELASTIC SHEET, PARTICULARLY FOR A SEAT BACKREST, PROVIDED WITH SUCH A DEVICE |
| JPS60207614A (en) * | 1984-03-29 | 1985-10-19 | 株式会社タチエス | Lamber support apparatus |
| AU585714B2 (en) * | 1986-05-16 | 1989-06-22 | Sturdy Components Pty. Limited | Improved chair incorporating lumbar support |
-
2006
- 2006-08-24 FR FR0607486A patent/FR2905056B1/en not_active Expired - Fee Related
-
2007
- 2007-08-22 EP EP07823439A patent/EP2054267A2/en not_active Withdrawn
- 2007-08-22 WO PCT/FR2007/001391 patent/WO2008023119A2/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1527147A (en) * | 1967-04-19 | 1968-05-31 | Citroen Sa Andre | Improvements to seats, especially for vehicles |
| DE8702174U1 (en) * | 1987-02-12 | 1987-04-30 | Kemmann & Koch, 5620 Velbert | adjustable back |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2905056B1 (en) | 2011-12-09 |
| WO2008023119A2 (en) | 2008-02-28 |
| FR2905056A1 (en) | 2008-02-29 |
| WO2008023119A3 (en) | 2008-11-27 |
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