EP1722658A2 - Collapsible furniture construction, particularly for a foldaway bed - Google Patents

Collapsible furniture construction, particularly for a foldaway bed

Info

Publication number
EP1722658A2
EP1722658A2 EP05736660A EP05736660A EP1722658A2 EP 1722658 A2 EP1722658 A2 EP 1722658A2 EP 05736660 A EP05736660 A EP 05736660A EP 05736660 A EP05736660 A EP 05736660A EP 1722658 A2 EP1722658 A2 EP 1722658A2
Authority
EP
European Patent Office
Prior art keywords
frame
wall
flanges
structure according
flanks
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05736660A
Other languages
German (de)
French (fr)
Other versions
EP1722658B1 (en
Inventor
Alexis Paoutoff
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to PL05736660T priority Critical patent/PL1722658T3/en
Publication of EP1722658A2 publication Critical patent/EP1722658A2/en
Application granted granted Critical
Publication of EP1722658B1 publication Critical patent/EP1722658B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C17/00—Sofas; Couches; Beds
    • A47C17/38—Wall beds
    • A47C17/42—Wall beds having supporting legs with fixed position on the floor, e.g. attached thereto
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C17/00—Sofas; Couches; Beds
    • A47C17/38—Wall beds

Definitions

  • the invention relates to the field of furniture and more particularly that of retractable beds.
  • current furniture In the context of home improvement, current furniture must meet criteria of functionality, simplicity and safety in increasingly small spaces.
  • the rooms are relatively small and must simultaneously provide a sleeping space and a work space allowing the use, for example, of computers. This finding has led to the appearance of retractable furniture, allowing significant space savings depending on their position.
  • retractable beds which are raised when they are not used, to allow significant space savings after transformation of the sleeping space into working space.
  • a retractable bed conventionally comprises a box-type support structure, fixed against a wall and comprising two side walls and an upper horizontal wall, the bed being pivotally mounted to the lower part of this box, by means of an appropriate fixing device and joint.
  • the retractable bed is movable between two positions, namely a folded position, in which the bed is disposed vertically inside the box and an open position, in which the bed . rests horizontally on the ground.
  • the retractable bed is generally provided with a decorative element so that in the folded position, the box has the external appearance, for example, of a cabinet.
  • such retractable beds are unsightly. Indeed, when the bed is in the open position, the sides and the top of the box are visible and affect the decor of the room in which the bed is placed.
  • the document FR-A-2 711 048 proposes a fixing device for retractable bed that does not require the use of a supporting structure.
  • the device consists of two independent elements arranged on either side of the head of the retractable bed and comprising wall fixing means and / or ground-shaped bracket with reinforcing walls.
  • Each reinforcing wall has a receiving housing for the pivot axis of the bed.
  • these two elements at right angle must be fixed against side furniture, for example, bedside tables, otherwise the two elements tend to deviate under the effect of the weight of the bed or various solicitations in rotation of the retractable bed.
  • the main disadvantage of this device is the dislocation of the pivot axis and the fall of the bed between the two elements at right angles.
  • this fastening system has poor resistance to deformation. Indeed, during the pivoting of the bed, stresses appear and cause a phenomenon of tearing of the device, due to the effect of lever arm generated by the weight and length of the bed.
  • the object of the invention is to overcome these drawbacks and has as its object a foldable furniture structure, in particular a retractable bed, comprising a support comprising two parallel and spaced lateral flanges of substantially rectangular shape and having two lower front and rear corners and a front and rear top corners and a substantially rectangular shaped pivot frame having a rear end portion engaged between said flanges and rotatably mounted thereon between a folded position substantially vertical and an extended or open position substantially horizontally forward.
  • this structure comprises at least one cross member which is substantially perpendicular to said flanges and fixed on the latter and which is intended to be in contact with the ground or with a wall and comprises means for attachment to the ground or to the wall; a transverse axis of pivoting which extends substantially perpendicular to said flanges and mounted on said frame and whose ends are pivotally mounted on said flanges in an area near their upper front corners; and a transverse reinforcement antitorion bar, substantially perpendicular to said flanges, integral with the latter and disposed in an area below said pivot axis.
  • said structure may comprise at least two sleepers which are substantially parallel to each other and substantially perpendicular to said flanges and one of which is intended to be in contact with the ground and the other is intended to be in contact with a wall, these sleepers having means for fixing the floor and wall.
  • said structure could also comprise three integral crosspieces flanges, which are substantially parallel to each other and substantially perpendicular to said flanges, said crosspieces being attached to the flanges at their two lower corners and the rear upper corner and having means fixing to the floor and the wall.
  • said transverse axis of pivoting extends preferably from one flange to the other.
  • said transverse axis of pivoting extends preferably through a transverse sheath integral with the pivoting frame.
  • said reinforcement transverse bar preferably carries at least one stopper of said pivoting frame in its folded position.
  • said abutment preferably comprises means for adjusting the folded position of said pivoting frame.
  • said pivot frame preferably extends rearwardly beyond said transverse axis of pivoting.
  • said structure preferably comprises means for assisting the tilting of said pivoting frame, which are installed between this frame and said reinforcing bar.
  • said structure may advantageously comprise lower covering flanks fixed on and covering the outer faces of said flanges
  • said frame may advantageously carry a casing box which comprises side walls and a front wall which is opposite. of the ground when it is in its extended position, the rear part of said box being engaged between said lower sidewalls so that said sidewalls extend near these lower sidewalls.
  • the lateral junction edges of the side walls and of said front wall preferably extend near the front edges of said lower covering flanks.
  • said structure may advantageously comprise a lower front plinth joining the lower front edges of said lower casing flanks, said front wall having a rear edge located near the upper edge of said front plinth when said frame is in its position.
  • said structure may advantageously comprise upper cladding flanks extending upwardly said lower cladding flanks and having front edges staggered rearwardly with respect to the front edges of said lower cladding flanks, said walls side members carried by said frame partially engaging between and near said upper casing flanks when said frame is in its folded position.
  • said structure may advantageously comprise a rear cladding wall extending between said cladding flanks, said frame carrying a rear wall whose upper edge comes close to the lower edge of this rear cladding wall when said frame is in its extended position.
  • said structure may advantageously comprise a front wall joining the front edges of said side walls and of said front wall and whose upper edge comes close to said rear cladding wall when said frame is in its extended position.
  • - Figure 1 is a perspective view comprising a support of a structure according to the invention, before mounting a pivoting frame of a retractable bed
  • - Figures 2 and 3 show two perspective views of a structure according to the invention comprising the support of Figure 1, equipped with the pivot frame, respectively in the folded or vertical position and in the open or extended position
  • - Figures 4 and 5 show, in side view and in section, the structure according to Figures 2 and 3
  • - Figures 6 and 7 show two perspective views of said structure according to the invention equipped with actuating means, respectively in the folded or vertical position and in the open or extended position
  • - Figures 8 and 9 show two perspective views of said structure according to the invention equipped with cladding means, respectively in
  • the folding bed structure 100 shown in the figures which comprises a fixing device and articulation, comprises a support 1 having two lateral flanges 2 parallel and substantially rectangular shape.
  • the flanges 2 are spaced a distance substantially corresponding to the width of the pivoting frame 3 of a retractable bed, rotatably mounted on the support 1, between a substantially vertical folded position, shown in FIGS. 2 and 4, and a elongated or substantially horizontal open position, shown in Figures 3 and 5.
  • the support 1 comprises three crosspieces 4, substantially parallel to each other and substantially perpendicular to the flanges 2, having means for fixing the wall and the floor of the support 1.
  • Two sleepers 4a, 4b are fixed to the flanges 2 at their two lower rear corners and front, intended to be in contact with the ground, and a cross member 4c is fixed at a rear upper corner of the flanges 2, intended to be contact with the wall.
  • the cross member 4c preferably has an L-shaped section to increase its resistance to deformation.
  • the cross members 4a and 4b preferably have a flat section in order to optimize their contact with the ground.
  • the crosspieces 4 comprise fixing holes (not shown), distributed, possibly evenly, over their entire length, to allow the fixing of the support 1, for example, by means of screws, on the floor and / or the wall. avoiding possible obstacles, including holes or ducts.
  • the device for fixing and articulating the structure 100 also comprises a pivot axis 5 (not shown in FIG. 1), substantially perpendicular to the flanges 2 and mounted at the same time on the pivoting frame 3 and the flanges 2, in a zone close to the upper front corner of the flanges 2.
  • the pivot axis 5 is preferably constituted by a bar 5a of circular section with a diameter for example of the order of 20mm to 25mm, ranging from from one flange to the other and whose ends are rotatably mounted on the flanges 2, possibly by means of insert rings.
  • This bar 5a preferably extends through a sleeve 5b of circular section fixed firmly on the pivoting frame 3 and extending over the entire width of the latter.
  • the support 1 comprises a cross bar of anti-torsion reinforcement 6, integral with the flanges 2, substantially parallel to the crosspieces 4 and to the transverse axis of pivoting 5 and disposed in an area located below the axis of pivoting 5.
  • the reinforcing bar 6 is intended, among other things, to reinforce the strength of the support 1, in particular during the pivoting of the frame 3, and to serve as a stop for complementary elements of the frame 3 in the folded position ( Figure 2).
  • the pivoting frame 3 comprises in particular lower support bars 7 for possible wrapping of the pivoting frame 3.
  • each flange 2 preferably comprises a cutout 8 located under its first upper corner.
  • the dimensions of the cuts 8 are adapted to the dimensions of a plinth, regardless of its height and thickness.
  • This particular design allows a better fixing of the support 1 against the wall and causes a better stability of the device, during the pivoting of the frame 3, especially in the case where the ground would not be quite flat.
  • the corresponding end of the pivot axis 5 is preferably located at a distance L1 of the order of 500 mm from the rear side of the flanges 2, perpendicular to the ground, possibly intended to come into contact with each other.
  • This position of the reinforcing bar 6 with respect to the pivot axis 5 is chosen so as to optimize the tear resistance.
  • the pivot axis 5 is preferably close enough to the reinforcement bar 6 and these two elements are relatively close to the ground.
  • the center of gravity of the device constituted by the support 1 and the pivoting frame 3 is therefore relatively low, which improves the resistance to the tearing phenomenon.
  • the first section 9 is preferably extended, parallel to the ground, by a stiffening profile 10, also steel, of flat section and a length of the order of 50mm.
  • the two sections 9 and 10 of the reinforcing bar 6 are thus shaped so as to adapt to the shape of the frame 3 and the support bars 7, when the frame 3 abuts against the reinforcement bar 6 in the folded position ( Figure 4). .
  • the main purpose of the reinforcement bar 6 is to reinforce the strength of the support 1 and to provide a stop for the chassis 3 in the folded position. It also has the function of preventing the chassis 3 from collapsing in the event of a sudden rupture of the pivot axis 5 which can cause the chassis 3 to sag.
  • the fact that the pivot axis 5 is mounted on both the support 1 and the pivoting frame 3 makes it possible to ensure good characteristics of resistance to deformation, in particular in the case where the structure comprises automated means for assisting the tilting.
  • the structure absorbs all the forces generated by the rotation of the frame 3 around the pivot axis 5, which avoids the installation of a supporting structure. Attractive gains in terms of cost, size and aesthetics are then generated.
  • the support 1 of the device is indeed directly attached to the wall and / or the ground. It is thus possible to fix it indifferently to any location of a room and the presence of a wall is not necessary. Furthermore, when the retractable bed is lying down or lying down, that is to say when it is folded forward, nothing distinguishes it from a fixed conventional bed.
  • the size of the retractable bed corresponds to the dimensions of the bed itself, which makes it possible to make the best use of the space available in the room where the bed is fixed.
  • the frame 3 comprises a substantially rectangular frame 11 consisting of side bars 11a and rear and front bars 11b and inner bars forming a cross 12 and connected to the bars 11a and 11b.
  • the pivot axis 5 is mounted on the pivoting frame 3 away from its rear end, so that the pivoting frame 3 extends rearwardly beyond the pivot axis 5.
  • the structure 100 can in addition, comprise automated means for assisting the tilting of the pivoting frame 3, for example, cylinders or electric motors.
  • the reinforcing bar 6 can also serve as a support for these automated means, because it is sufficiently rigid to withstand loads of the order of 250 kg / cm 2.
  • Such automated means are then preferably fixed between the stiffening profile 10 of the reinforcing bar 6 and the pivoting frame 3.
  • lateral pneumatic support cylinders 13 are installed between the reinforcement bar 6 and the lateral bars 11a of the frame 11 and a user-controllable actuating cylinder 14 are installed between the middle of the reinforcement bar 6 and the central bar 12a of the cross 12 parallel to the bars Lateral li a.
  • FIG. 1 As shown in FIG.
  • the reinforcement transverse bar 6 carries a set screw 6a which constitutes a limit stop in the upper position of the frame 3 and which makes it possible to adjust the final vertical position in the folded position of the frame 3.
  • the final vertical position in positi folded chassis 3 could be achieved by adjusting the length of the aforementioned cylinders, for example by screw-nut systems.
  • the structure 100 may further include a particular fixed liner described below.
  • On the outer faces of the flanges 2 are fixed substantially rectangular lower side flanks 16, which are larger upwards and towards the front. The flanges 2 could be inserted into suitable recesses of the flanks 16.
  • the lower side flanks 15 are extended upwards by upper lateral flanks 16 which have vertical front edges recessed towards the rear relative to the vertical front edges of the flanks 15.
  • a transverse and vertical rear wall 17 joins the lateral flanks 15 and 16, this rear wall 17 being recessed rearwardly with respect to the vertical front edges of the upper lateral flanks 16 and slightly recessed towards the front relative at their vertical back edges.
  • a front transverse plinth 18 joins the lower portions of the leading edges of the lower flanks 15.
  • the structure 100 may further comprise a movable cladding described below.
  • the frame 3 carries a casing box 19 which includes side walls 20, a front wall 21 which faces the ground when it is in its extended position and which is fixed on the bars 7 of the frame 3 to provide a space between the frame 1 1 and the front wall 21 to accommodate the cylinders 13 and 14, as well as a front transverse wall 22 located on the side of the front free end of the frame 3 and a rear transverse wall 23 located on the side of the rear free end of the frame 3.
  • the front wall 22 extends downwardly so as to constitute a foot 22a resting on the ground when the frame 3 is elongated.
  • the rear portions of the side walls 20 are engaged between the flanges 2 of the support 1 and close and have rear edges coming close to the reinforcing bar 6 when the frame is in its extended position.
  • the rear portion of the front wall 21 is also engaged between the flanges 2 of the support 1 and passes below the reinforcing bar 6 when the frame is in its extended position.
  • the side walls 20, the front transverse wall 22 and the transverse rear wall 23 protrude upwardly from the frame 1 1 to extend laterally to a bed base and a mattress installed on the frame 1 1.
  • the structure 100 which has just been described can be applied to form a bed whose direction of length and therefore of the coating can extend as well perpendicular to the pivot axis 5 as parallel to the latter.
  • the lower flanks 15 and the upper flanks 16 may advantageously constitute furniture walls or storage shelves placed on either side of the structure 100.
  • the present invention is not limited to the particular embodiments. described above. Many variations are possible without departing from the scope of the appended claims.

Landscapes

  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Health & Medical Sciences (AREA)
  • Special Chairs (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Hinges (AREA)
  • Jib Cranes (AREA)
  • Emergency Lowering Means (AREA)
  • Nonwoven Fabrics (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Assembled Shelves (AREA)
  • Extensible Doors And Revolving Doors (AREA)
  • Tables And Desks Characterized By Structural Shape (AREA)

Abstract

The device has a support with end plates (2) having respective cut-outs, placed below the upper corner of the plates, with dimensions adapted to dimensions of a plinth. The plates are spaced at a distance relating to a width of a pivoting sash (3) of a fold-away bed, mounted in rotation on the support. A rotating axle (5) has ends placed at a distance of 500 and 270 millimeters from rear and lower sides of the plates respectively.

Description

Structure de meuble pliable, en particulier lit escamotable Foldable furniture structure, particularly foldaway bed
L'invention concerne le domaine des meubles et plus particulièrement celui des lits escamotables. Dans l'optique de l'amélioration de l'habitat, le mobilier actuel doit répondre à des critères de fonctionnalité, de simplicité et de sécurité dans des espaces de plus en plus réduits. Particulièrement, dans le domaine de l 'hôtellerie, les chambres sont relativement petites et doivent proposer simultanément un espace de couchage et un espace de travail permettant l' utilisation, par exemple, d' ordinateurs. Ce constat a donc engendré l 'apparition de meubles escamotables, permettant un gain de place important selon leur position. Ainsi, dans le domaine de l 'hôtellerie, il est connu d'utiliser des lits escamotables, qui se relèvent quand ils ne sont pas utilisés, pour permettre un gain de place important après transformation de l' espace de couchage en espace de travail. Un lit escamotable comprend classiquement une structure porteuse de type caisson, fixée contre un mur et comprenant deux parois latérales et une paroi horizontale supérieure, le lit étant monté pivotant à la partie inférieure de ce caisson, grâce à un dispositif approprié de fixation et d 'articulation. Le lit escamotable est mobile entre deux positions, à savoir une position repliée, dans laquelle le lit est disposé verticalement à l ' intérieur du caisson et une position ouverte, dans laquelle le lit . repose horizontalement sur le sol. Par ailleurs, le lit escamotable est généralement muni d' un élément de décor pour qu' en position repliée, le caisson ait l'aspect extérieur, par exemple, d'une armoire. Cependant, de tels lits escamotables sont peu esthétiques. En effet, lorsque le lit est en position ouverte, les côtés et le dessus du caisson sont visibles et nuisent au décor de la pièce dans laquelle le lit est placé. De plus, l 'utilisateur peut ressentir une impression d' enfermement, car en position allongée la tête de l'utilisateur se retrouve enfermée entre les parois latérales et la paroi supérieure du caisson. Par ailleurs, les dispositifs de fixation de tels lits sont complexes et difficiles à installer, car les cloisons des murs sont généralement légères et peu épaisses. De plus, ces dispositifs s'avèrent être complètement inadaptés à une installation non murale. Pour remédier à ces problèmes, le document FR-A-2 711 048 propose un dispositif de fixation pour lit escamotable ne nécessitant pas l'utilisation d'une structure porteuse. Le dispositif se compose de deux éléments indépendants disposés de part et d' autre de la tête du lit escamotable et comportant des moyens de fixation au mur et/ou au sol en forme d' équerre avec des parois de renforcement. Il est ainsi possible de fixer le dispositif de fixation uniquement au sol ou simultanément au sol et au mur. Chaque paroi de renforcement comporte un logement de réception pour l ' axe de pivotement du lit. Cependant, pour une meilleure utilisation, ces deux éléments en équerre doivent se fixer contre des meubles annexes, par exemple, des tables de chevet, sinon les deux éléments ont tendance à s' écarter sous l' effet du poids du lit ou des diverses sollicitations en rotation du lit escamotable. L'inconvénient principal de ce dispositif est donc le déboîtement de l'axe de pivotement et la chute du lit entre les deux éléments en équerre. Par ailleurs, ce système de fixation présente une mauvaise tenue à la déformation. En effet, lors du pivotement du lit, des contraintes apparaissent et entraînent un phénomène d' arrachement du dispositif, dû à l' effet de bras de levier engendré par le poids et la longueur du lit. L'invention a pour but de remédier à ces inconvénients et a pour objet une structure de meuble pliable, en particulier lit escamotable, comprenant un support comportant deux flasques latéraux parallèles et espacés, de forme sensiblement rectangulaire et présentant deux coins inférieurs avant et arrière et des coins supérieurs avant et arrière et un châssis pivotant, de forme sensiblement rectangulaire, qui présente une partie d' extrémité arrière engagée entre lesdits flasques et qui est monté à rotation sur ces derniers entre une position repliée sensiblement verticale et une position allongée ou ouverte vers l ' avant sensiblement horizontale. Selon l'invention, cette structure comprend au moins une traverse qui est sensiblement perpendiculaire auxdits flasques et fixée sur ces derniers et qui est destinée à être en contact avec le sol ou avec un mur et comporte des moyens de fixation au sol ou au mur ; un axe transversal de pivotement qui s' étend sensiblement perpendiculaire auxdits flasques et monté sur ledit châssis et dont les extrémités sont montées pivotantes sur lesdits flasques dans une zone proche de leurs coins supérieurs avant ; et une barre transversale de renfort antitorsion, sensiblement perpendiculaire auxdits flasques, solidaire de ces derniers et disposée dans une zone située en dessous dudit axe de pivotement. Selon l'invention, ladite structure peut comporter au moins deux traverses qui sont sensiblement parallèles entre elles et sensiblement perpendiculaires auxdits flasques et dont l'une est destinée à être en contact avec le sol et l' autre est destinée à être en contact avec un mur, ces traverses comportant des moyens de fixation au sol et au mur. Selon l'invention, ladite structure pourrait aussi comporter trois traverses solidaires des flasques, qui sont sensiblement parallèles entre elles et sensiblement perpendiculaires auxdits flasques, lesdites traverses étant fixées aux flasques au niveau de leurs deux coins inférieurs et du coin supérieur arrière et comportant des moyens de fixation au sol et au mur. Selon l'invention, ledit axe transversal de pivotement s' étend de préférence d'un flasque à l ' autre. Selon l'invention, ledit axe transversal de pivotement s' étend de préférence au travers d'un fourreau transversal solidaire du châssis pivotant. Selon l'invention, ladite barre transversale de renfort porte de préférence au moins une butée d'arrêt dudit châssis pivotant à sa position repliée. Selon l'invention, ladite butée comprend de préférence des moyens de réglage de la position repliée dudit châssis pivotant. Selon l'invention, ledit châssis pivotant s' étend de préférence vers l'arrière au-delà dudit axe transversal de pivotement. Selon l'invention, ladite structure comprend de préférence des moyens d' assistance au basculement dudit châssis pivotant, qui sont installés entre ce châssis et ladite barre de renfort. Selon l'invention, ladite structure peut avantageusement comprendre des flancs d'habillage inférieurs fixés sur et couvrant les faces extérieures desdits flasques, et ledit châssis peut avantageusement porter un caisson d' habillage qui comprend des parois latérales et une paroi frontale qui vient en regard du sol lorsqu'il est à sa position allongée, la partie arrière dudit caisson étant engagée entre lesdits flancs d' habillage inférieurs de telle sorte que lesdites parois latérales s' étendent à proximité de ces flancs d' habillage inférieurs. Selon l'invention, lorsque ledit châssis est à sa position repliée, les bords latéraux de jonction des parois latérales et de ladite paroi frontale s'étendent de préférence à proximité des bords avant desdits flancs d' habillage inférieurs. Selon l'invention, ladite structure peut avantageusement comprendre une plinthe avant inférieure rejoignant les bords inférieurs avant desdits flancs d'habillage inférieurs, ladite paroi frontale présentant un bord arrière situé à proximité du bord supérieur de ladite plinthe avant lorsque ledit châssis est à sa position repliée. Selon l'invention, ladite structure peut avantageusement comprendre des flancs d'habillage supérieurs prolongeant vers le haut lesdits flancs d'habillage inférieurs et présentant des bords avant décalés vers l ' arrière par rapport aux bords avant desdits flancs d'habillage inférieurs, lesdites parois latérales portées par ledit châssis s' engageant en partie entre et à proximité desdits flancs d'habillage supérieurs lorsque ledit châssis est à sa position repliée. Selon l'invention, ladite structure peut avantageusement comprendre une paroi d'habillage arrière s' étendant entre lesdits flancs d'habillage, ledit châssis portant une paroi arrière dont le bord supérieur vient à proximité du bord inférieur de cette paroi d' habillage arrière lorsque ledit châssis est à sa position allongée. Selon l'invention, ladite structure peut avantageusement comprendre une paroi avant rejoignant les bords avant desdites parois latérales et de ladite paroi frontale et dont le bord supérieur vient à proximité de ladite paroi d'habillage arrière lorsque ledit châssis est à sa position allongée. Un mode particulier de réalisation de la présente invention va maintenant être décrit à titre d' exemple non limitatif et illustré par le dessin, sur lequel : - La figure 1 est une vue en perspective comprenant d' un support d' une structure selon l'invention, avant montage d' un châssis pivotant d'un lit escamotable ; - Les figures 2 et 3 représentent deux vues en perspective d'une structure selon l 'invention comprenant le support de la figure 1, équipé du châssis pivotant, respectivement en position repliée ou verticale et en position ouverte ou allongée ; - Les figures 4 et 5 représentent, en vue de côté et en coupe, la structure selon les figures 2 et 3 ; - Les figures 6 et 7 représentent deux vues en perspective de ladite structure selon l 'invention équipée de moyens d' actionnement, respectivement en position repliée ou verticale et en position ouverte ou allongée ; - Les figures 8 et 9 représentent deux vues en perspective de ladite structure selon l'invention équipée de moyens d' habillage, respectivement en position repliée ou verticale et en position ouverte ou allongée ; - Et la figure 10 représente une coupe agrandie de la partie basse de la structure précitée. La structure 100 de lit repliable représentée sur les figures, qui comporte un dispositif de fixation et d'articulation, comprend un support 1 comportant deux flasques latéraux 2 parallèles et de forme sensiblement rectangulaire. Les flasques 2 sont espacés d' une distance correspondant sensiblement à la largeur du châssis pivotant 3 d' un lit escamotable, monté à rotation sur le support 1, entre une position repliée sensiblement verticale, représentée sur les figures 2 et 4, et une position allongée ou ouverte sensiblement horizontale, représentée sur les figures 3 et 5. Le support 1 comporte trois traverses 4, sensiblement parallèles entre elles et sensiblement perpendiculaires aux flasques 2, comportant des moyens de fixation au mur et au sol du support 1. Deux traverses 4a, 4b sont fixées aux flasques 2 au niveau de leurs deux coins inférieurs arrière et avant, destinés à être en contact avec le sol, et une traverse 4c est fixée au niveau d'un coin supérieur arrière des flasques 2, destinée à être en contact avec le mur. La traverse 4c présente, de préférence, une section en L, afin de renforcer sa résistance à la déformation Les traverses 4a et 4b ont, de préférence, une section plane, afin d'optimiser leur contact avec le sol. Les traverses 4 comportent des trous de fixation (non représentés), répartis, éventuellement uniformément, sur toute leur longueur, pour permettre la fixation du support 1 , par exemple, par l'intermédiaire de vis, sur le sol et/ou le mur en évitant d'éventuels obstacles, notamment des trous ou des conduits. Le dispositif de fixation et d' articulation de la structure 100 comporte également un axe de pivotement 5 (non représenté sur la figure 1), sensiblement perpendiculaire aux flasques 2 et monté à la fois du châssis pivotant 3 et des flasques 2, dans une zone proche du coin supérieur avant des flasques 2. Comme le montre la figure 10, l ' axe de pivotement 5 est, de préférence, constitué par une barre 5a de section circulaire avec un diamètre par exemple de l ' ordre de 20mm à 25mm, allant d' un flasque à l ' autre et dont les extrémités sont montées tournantes sur les flasques 2, éventuellement par l' intermédiaire de bagues rapportées. Cette barre 5a s' étend de préférence au travers d' un fourreau 5b de section circulaire fixé solidement sur le châssis pivotant 3 et s'étendant sur toute la largeur de ce dernier. Par ailleurs, le support 1 comporte une barre transversale de renfort anti-torsion 6, solidaire des flasques 2, sensiblement parallèle aux traverses 4 et à l'axe transversal de pivotement 5 et disposée dans une zone située sous l' axe de pivotement 5. La barre de renfort 6 est destinée, entre autres, à renforcer la robustesse du support 1, notamment lors du pivotement du châssis 3, et à servir de butée à des éléments complémentaires du châssis 3 en position repliée (figure 2). Le châssis pivotant 3 comporte notamment des barres inférieures de support 7 pour un habillage éventuel du châssis pivotant 3. Les barres 7 sont disposées, approximativement, aux deux extrémités et au milieu du châssis 3. Comme représenté sur les figures 4 et 5, chaque flasque 2 comporte, de préférence, une découpe 8 située sous son premier coin supérieur. Les dimensions des découpes 8 sont adaptées aux dimensions d'une plinthe, quelles que soient sa hauteur et son épaisseur. Cette conception particulière permet une meilleure fixation du support 1 contre le mur et entraîne une meilleure stabilité du dispositif, lors du pivotement du châssis 3, notamment dans le cas où le sol ne serait pas tout à fait plat. Selon un exemple de réalisation, l' extrémité correspondante de l 'axe de pivotement 5 est située, de préférence, à une distance Ll de l 'ordre de 500mm du côté arrière des flasques 2, perpendiculairement au sol, éventuellement destiné à venir en contact avec le mur, et à une distance L2 de l' ordre de 270mm du côté inférieur du flasque 2, destiné à être en contact avec le sol. Une telle position, donnée en exemple, de l 'axe de pivotement 5 permet d' éviter tout phénomène d' arrachement induit par le pivotement du châssis 3 du lit escamotable. En effet, le châssis 3 du lit repliable est relativement long et cette longueur provoque un effet de bras de levier important, lors du pi votement du châssis 3. Pour atténuer ce phénomène d'arrachement, une bonne fixation du support 1 au sol et/ou au mur, ainsi qu'un positionnement approprié de l' axe de pivotement 5, sont nécessaires. La barre de renfort 6 est située sous l ' axe de pivotement 5 et décalée vers l ' avant (figures 4 et 5). Cette position de la barre de renfort 6 par rapport à l ' axe de pivotement 5 est choisie de manière à optimiser la résistance à l'arrachement. L'axe de pivotement 5 est, de préférence, assez proche de la barre de renfort 6 et ces deux éléments sont relativement proches du sol. Le centre de gravité du dispositif constitué par le support 1 et le châssis pivotant 3 est donc relativement bas, ce qui améliore la résistance au phénomène d' arrachement. A titre d'exemple, le premier profilé 9 est, de préférence, prolongé, parallèlement au sol, par un profilé raidisseur 10, également en acier, de section plane et d' une longueur de l ' ordre de 50mm. Les deux profilés 9 et 10 de la barre de renfort 6 sont ainsi conformés de manière à s' adapter à la forme du châssis 3 et des barres de support 7, lorsque le châssis 3 vient en butée contre la barre de renfort 6 en position repliée (figure 4). . La barre de renfort 6 a pour fonctions principales le renforcement de la solidité du support 1 et la constitution d' une butée pour le châssis 3 en position repliée. Elle a également pour fonction d' éviter l'effondrement du châssis 3 en cas de rupture subite de l'axe de pivotement 5 pouvant provoquer un affaissement du châssis 3. Le fait que l' axe de pivotement 5 soit monté à la fois sur le support 1 et le châssis pivotant 3 permet d' assurer de bonnes caractéristiques de résistance à la déformation, notamment dans le cas où la structure comporte des moyens automatisés d' assistance au basculement. La structure absorbe tous les efforts engendrés par la rotation du châssis 3 autour de l ' axe de pivotement 5, ce qui permet d' éviter l 'installation d'une structure porteuse. Des gains intéressants en termes de coût, d' encombrement et d' esthétisme sont alors engendrés. Grâce au dispositif de fixation et d' articulation décrit ci-dessus, il n' est pas nécessaire de prévoir de structure porteuse ou de meubles annexes. Le support 1 du dispositif est en effet directement fixé au mur et/ou au sol. Il est ainsi possible de le fixer indifféremment à tout emplacement d' une pièce et la présence d'un mur n' est pas nécessaire. Par ailleurs, lorsque le lit escamotable est en position allongée ou couchée, c' est-à-dire lorsqu'il est rabattu vers l ' avant, rien ne le distingue d'un lit classique fixe. L' encombrement du lit escamotable correspond aux dimensions du lit lui-même, ce qui permet d'utiliser au mieux l 'espace disponible dans la pièce où le lit est fixé. En outre, il est possible de prévoir un habillage pour le châssis pivotant 3 et le support 1 , afin qu'en position repliée les différents éléments se confondent avec le décor de la pièce dans laquelle le lit est installé. Le châssis 3 comprend un cadre 11 sensiblement rectangulaire constitué par des barres latérales l ia et des barres arrière et avant 1 1b et des barres intérieures formant une croix 12 et reliées aux barres l i a et 11b. L'axe de pivotement 5 est monté sur le châssis pivotant 3 à distance de son extrémité arrière, de telle sorte que le châssis pivotant 3 s'étend vers l 'arrière au-delà de l'axe de pivotement 5. La structure 100 peut, de plus, comporter des moyens automatisés d' assistance au basculement du châssis pivotant 3, par exemple, des vérins ou des moteurs électriques. Dans ce cas, la barre de renfort 6 peut également servir de support à ces moyens automatisés, car elle est suffisamment rigide pour supporter des charges de l 'ordre de 250kg/cm2. De tels moyens automatisés sont alors fixés, de préférence, entre le profilé raidisseur 10 de la barre de renfort 6 et le châssis pivotant 3. Comme le montrent en particulier les figures 6 et 7, des vérins pneumatiques latéraux 13 d' assistance sont installés entre la barre de renfort 6 et les barres latérales l ia du cadre 11 et un vérin d' actionnement 14, commandable par un utilisateur, est installé entre le milieu de la barre de renfort 6 et la barre centrale 12a de la croix 12 parallèle aux barres latérales l i a. Comme le montre la fi gure 10, la barre transversale de renfort 6 porte une vis de réglage 6a qui constitue une butée de fin de course en position haute du châssis 3 et qui permet de régler la position finale verticale en position repliée du châssis 3. Dans une variante, la position finale verticale en positi on repliée du châssis 3 pourrait être réalisée par un réglage de la longueur des vérins précités, par exemple par des système vis-écrous. En se reportant aux figures 8 et 9, on peut voir que la structure 100 peut en outre comprendre un habillage fixe particulier décrit ci- dessous. Sur les faces extérieures des flasques 2 sont fixés des flancs latéraux inférieurs 16 sensiblement rectangulaires, plus grands vers le haut et vers l' avant. Les flasques 2 pourraient être insérés dans des évidements adaptés des flancs 16. Les flancs latéraux inférieurs 15 sont prolongés vers le haut par des flancs latéraux supérieurs 16 qui présentent des bords avant verticaux en retrait vers l ' arrière par rapport aux bords avant verticaux des flancs inférieurs 15. Une paroi arrière 17 transversale et verticale rejoint les flancs latéraux 15 et 16, cette paroi arrière 17 étant en retrait vers l 'arrière par rapport aux bords avant verticaux des flancs latéraux supérieurs 16 et légèrement en retrait vers l ' avant par rapport à leurs bords arrière verticaux. Une plinthe transversale avant 18 rejoint les parties inférieures des bords avant des flancs inférieurs 15. La structure 100 peut en outre comprendre un habillage mobile décrit ci-dessous. Le châssis 3 porte un caisson d'habillage 19 qui comprend des parois latérales 20, une paroi frontale 21 qui vient en regard du sol lorsqu'il est à sa position allongée et qui est fixée sur les barres 7 du châssis 3 pour ménager un espace entre le cadre 1 1 et la paroi frontale 21 pour y loger les vérins 13 et 14, ainsi qu ' une paroi transversale avant 22 située du côté de l ' extrémité libre avant du châssis 3 et une paroi transversale arrière 23 située du côté de l' extrémité libre arrière du châssis 3. La paroi avant 22 se prolonge vers le bas de façon à constituer un pied 22a venant en appui sur le sol lorsque le châssis 3 est allongé. Les parties arrière des parois latérales 20 sont engagées entre les flasques 2 du support 1 et à proximité et présentent des bords arrière venant à proximité de la barre de renfort 6 lorsque le châssis est à sa position allongée. La partie arrière de la paroi frontale 21 est aussi engagée entre les flasques 2 du support 1 et passe au-dessous de la barre de renfort 6 lorsque le châssis est à sa position allongée. Les parois latérales 20, la paroi transversale avant 22 et la paroi arrière transversale 23 dépassent vers le haut du cadre 1 1 pour s' étendre latéralement à un sommier et un matelas installés sur le cadre 1 1. Lorsque le châssis 3 est à sa position allongée, les bords supérieurs des parois latérales 20 sont légèrement au-dessous des bords supérieurs des flancs inférieurs 15 Lorsque le châssis 3 est amené à sa position repliée, verticale, les parois latérales 20 de son habillage s'engagent en partie entre les flancs supérieurs 16, la paroi frontale 21 vient à proximité des bords avant des flancs inférieurs 15, le bord arrière inférieur de la paroi frontale 21 vient à proximité du bord supérieur de la plinthe transversale 18 et le bord supérieur de la paroi transversale arrière 23 vient à proximité du bord inférieur de la paroi transversale arrière fixe 17. Comme le montre la figure 8, lorsque le châssis 3 est à sa position verticale, l 'habillage qui vient d' être décrit a l' apparence d' une armoire qui l' enferme avec sa literie. Comme le montre la figure 9, lorsque le châssis 3 est à sa position allongée, l'habillage décrit confine la périphérie de la literie et la largeur réduite des flancs supérieurs 16 ne constitue pas une gêne pour les utilisateurs. La structure 100 qui vient d'être décrite peut être appliquée pour constituer un lit dont le sens de la longueur et donc du couchage peut tout aussi bien s'étendre perpendiculairement à l ' axe de pivotement 5 que parallèlement à ce dernier. Par ailleurs, les flancs inférieurs 15 et les flancs supéri eurs 16 peuvent avantageusement constituer des parois de meubles ou d' étagères de rangement placés de part et d' autre de la structure 100. La présente invention ne se limite pas aux exemples particuliers de réalisation décrits ci-dessus. Bien des variantes sont possibles sans sortir du cadre des revendications annexées. The invention relates to the field of furniture and more particularly that of retractable beds. In the context of home improvement, current furniture must meet criteria of functionality, simplicity and safety in increasingly small spaces. Particularly in the field of the hotel industry, the rooms are relatively small and must simultaneously provide a sleeping space and a work space allowing the use, for example, of computers. This finding has led to the appearance of retractable furniture, allowing significant space savings depending on their position. Thus, in the field of hospitality, it is known to use retractable beds, which are raised when they are not used, to allow significant space savings after transformation of the sleeping space into working space. A retractable bed conventionally comprises a box-type support structure, fixed against a wall and comprising two side walls and an upper horizontal wall, the bed being pivotally mounted to the lower part of this box, by means of an appropriate fixing device and joint. The retractable bed is movable between two positions, namely a folded position, in which the bed is disposed vertically inside the box and an open position, in which the bed . rests horizontally on the ground. Furthermore, the retractable bed is generally provided with a decorative element so that in the folded position, the box has the external appearance, for example, of a cabinet. However, such retractable beds are unsightly. Indeed, when the bed is in the open position, the sides and the top of the box are visible and affect the decor of the room in which the bed is placed. In addition, the user may feel an impression of confinement, because in the recumbent position the user 's head is locked between the side walls and the upper wall of the user. caisson. Moreover, the fixing devices of such beds are complex and difficult to install, because the wall partitions are generally light and not very thick. In addition, these devices are found to be completely unsuitable for non-wall installation. To remedy these problems, the document FR-A-2 711 048 proposes a fixing device for retractable bed that does not require the use of a supporting structure. The device consists of two independent elements arranged on either side of the head of the retractable bed and comprising wall fixing means and / or ground-shaped bracket with reinforcing walls. It is thus possible to fix the fixing device only on the floor or simultaneously with the floor and the wall. Each reinforcing wall has a receiving housing for the pivot axis of the bed. However, for better use, these two elements at right angle must be fixed against side furniture, for example, bedside tables, otherwise the two elements tend to deviate under the effect of the weight of the bed or various solicitations in rotation of the retractable bed. The main disadvantage of this device is the dislocation of the pivot axis and the fall of the bed between the two elements at right angles. Moreover, this fastening system has poor resistance to deformation. Indeed, during the pivoting of the bed, stresses appear and cause a phenomenon of tearing of the device, due to the effect of lever arm generated by the weight and length of the bed. The object of the invention is to overcome these drawbacks and has as its object a foldable furniture structure, in particular a retractable bed, comprising a support comprising two parallel and spaced lateral flanges of substantially rectangular shape and having two lower front and rear corners and a front and rear top corners and a substantially rectangular shaped pivot frame having a rear end portion engaged between said flanges and rotatably mounted thereon between a folded position substantially vertical and an extended or open position substantially horizontally forward. According to the invention, this structure comprises at least one cross member which is substantially perpendicular to said flanges and fixed on the latter and which is intended to be in contact with the ground or with a wall and comprises means for attachment to the ground or to the wall; a transverse axis of pivoting which extends substantially perpendicular to said flanges and mounted on said frame and whose ends are pivotally mounted on said flanges in an area near their upper front corners; and a transverse reinforcement antitorion bar, substantially perpendicular to said flanges, integral with the latter and disposed in an area below said pivot axis. According to the invention, said structure may comprise at least two sleepers which are substantially parallel to each other and substantially perpendicular to said flanges and one of which is intended to be in contact with the ground and the other is intended to be in contact with a wall, these sleepers having means for fixing the floor and wall. According to the invention, said structure could also comprise three integral crosspieces flanges, which are substantially parallel to each other and substantially perpendicular to said flanges, said crosspieces being attached to the flanges at their two lower corners and the rear upper corner and having means fixing to the floor and the wall. According to the invention, said transverse axis of pivoting extends preferably from one flange to the other. According to the invention, said transverse axis of pivoting extends preferably through a transverse sheath integral with the pivoting frame. According to the invention, said reinforcement transverse bar preferably carries at least one stopper of said pivoting frame in its folded position. According to the invention, said abutment preferably comprises means for adjusting the folded position of said pivoting frame. According to the invention, said pivot frame preferably extends rearwardly beyond said transverse axis of pivoting. According to the invention, said structure preferably comprises means for assisting the tilting of said pivoting frame, which are installed between this frame and said reinforcing bar. According to the invention, said structure may advantageously comprise lower covering flanks fixed on and covering the outer faces of said flanges, and said frame may advantageously carry a casing box which comprises side walls and a front wall which is opposite. of the ground when it is in its extended position, the rear part of said box being engaged between said lower sidewalls so that said sidewalls extend near these lower sidewalls. According to the invention, when said frame is in its folded position, the lateral junction edges of the side walls and of said front wall preferably extend near the front edges of said lower covering flanks. According to the invention, said structure may advantageously comprise a lower front plinth joining the lower front edges of said lower casing flanks, said front wall having a rear edge located near the upper edge of said front plinth when said frame is in its position. folded. According to the invention, said structure may advantageously comprise upper cladding flanks extending upwardly said lower cladding flanks and having front edges staggered rearwardly with respect to the front edges of said lower cladding flanks, said walls side members carried by said frame partially engaging between and near said upper casing flanks when said frame is in its folded position. According to the invention, said structure may advantageously comprise a rear cladding wall extending between said cladding flanks, said frame carrying a rear wall whose upper edge comes close to the lower edge of this rear cladding wall when said frame is in its extended position. According to the invention, said structure may advantageously comprise a front wall joining the front edges of said side walls and of said front wall and whose upper edge comes close to said rear cladding wall when said frame is in its extended position. A particular embodiment of the present invention will now be described by way of non-limiting example and illustrated by the drawing, in which: - Figure 1 is a perspective view comprising a support of a structure according to the invention, before mounting a pivoting frame of a retractable bed; - Figures 2 and 3 show two perspective views of a structure according to the invention comprising the support of Figure 1, equipped with the pivot frame, respectively in the folded or vertical position and in the open or extended position; - Figures 4 and 5 show, in side view and in section, the structure according to Figures 2 and 3; - Figures 6 and 7 show two perspective views of said structure according to the invention equipped with actuating means, respectively in the folded or vertical position and in the open or extended position; - Figures 8 and 9 show two perspective views of said structure according to the invention equipped with cladding means, respectively in the folded or vertical position and in the open or extended position; - And Figure 10 shows an enlarged section of the lower part of the above structure. The folding bed structure 100 shown in the figures, which comprises a fixing device and articulation, comprises a support 1 having two lateral flanges 2 parallel and substantially rectangular shape. The flanges 2 are spaced a distance substantially corresponding to the width of the pivoting frame 3 of a retractable bed, rotatably mounted on the support 1, between a substantially vertical folded position, shown in FIGS. 2 and 4, and a elongated or substantially horizontal open position, shown in Figures 3 and 5. The support 1 comprises three crosspieces 4, substantially parallel to each other and substantially perpendicular to the flanges 2, having means for fixing the wall and the floor of the support 1. Two sleepers 4a, 4b are fixed to the flanges 2 at their two lower rear corners and front, intended to be in contact with the ground, and a cross member 4c is fixed at a rear upper corner of the flanges 2, intended to be contact with the wall. The cross member 4c preferably has an L-shaped section to increase its resistance to deformation. The cross members 4a and 4b preferably have a flat section in order to optimize their contact with the ground. The crosspieces 4 comprise fixing holes (not shown), distributed, possibly evenly, over their entire length, to allow the fixing of the support 1, for example, by means of screws, on the floor and / or the wall. avoiding possible obstacles, including holes or ducts. The device for fixing and articulating the structure 100 also comprises a pivot axis 5 (not shown in FIG. 1), substantially perpendicular to the flanges 2 and mounted at the same time on the pivoting frame 3 and the flanges 2, in a zone close to the upper front corner of the flanges 2. As shown in Figure 10, the pivot axis 5 is preferably constituted by a bar 5a of circular section with a diameter for example of the order of 20mm to 25mm, ranging from from one flange to the other and whose ends are rotatably mounted on the flanges 2, possibly by means of insert rings. This bar 5a preferably extends through a sleeve 5b of circular section fixed firmly on the pivoting frame 3 and extending over the entire width of the latter. Furthermore, the support 1 comprises a cross bar of anti-torsion reinforcement 6, integral with the flanges 2, substantially parallel to the crosspieces 4 and to the transverse axis of pivoting 5 and disposed in an area located below the axis of pivoting 5. The reinforcing bar 6 is intended, among other things, to reinforce the strength of the support 1, in particular during the pivoting of the frame 3, and to serve as a stop for complementary elements of the frame 3 in the folded position (Figure 2). The pivoting frame 3 comprises in particular lower support bars 7 for possible wrapping of the pivoting frame 3. The bars 7 are arranged approximately at the two ends and in the middle of the frame 3. As shown in FIGS. 4 and 5, each flange 2 preferably comprises a cutout 8 located under its first upper corner. The dimensions of the cuts 8 are adapted to the dimensions of a plinth, regardless of its height and thickness. This particular design allows a better fixing of the support 1 against the wall and causes a better stability of the device, during the pivoting of the frame 3, especially in the case where the ground would not be quite flat. According to an exemplary embodiment, the corresponding end of the pivot axis 5 is preferably located at a distance L1 of the order of 500 mm from the rear side of the flanges 2, perpendicular to the ground, possibly intended to come into contact with each other. with the wall, and at a distance L2 of the order of 270mm from the lower side of the flange 2, intended to be in contact with the ground. Such a position, given as an example, of the pivot axis 5 makes it possible to avoid any phenomenon of tearing induced by the pivoting of the frame 3 of the retractable bed. Indeed, the frame 3 of the collapsible bed is relatively long and this length causes a significant leverage effect, when pi votement of the chassis 3. To mitigate this phenomenon of tearing, a good attachment of the support 1 to the ground and / or on the wall, as well as an appropriate positioning of the pivot axis 5, are necessary. The reinforcing bar 6 is located under the pivot axis 5 and shifted forwards (FIGS. 4 and 5). This position of the reinforcing bar 6 with respect to the pivot axis 5 is chosen so as to optimize the tear resistance. The pivot axis 5 is preferably close enough to the reinforcement bar 6 and these two elements are relatively close to the ground. The center of gravity of the device constituted by the support 1 and the pivoting frame 3 is therefore relatively low, which improves the resistance to the tearing phenomenon. For example, the first section 9 is preferably extended, parallel to the ground, by a stiffening profile 10, also steel, of flat section and a length of the order of 50mm. The two sections 9 and 10 of the reinforcing bar 6 are thus shaped so as to adapt to the shape of the frame 3 and the support bars 7, when the frame 3 abuts against the reinforcement bar 6 in the folded position (Figure 4). . The main purpose of the reinforcement bar 6 is to reinforce the strength of the support 1 and to provide a stop for the chassis 3 in the folded position. It also has the function of preventing the chassis 3 from collapsing in the event of a sudden rupture of the pivot axis 5 which can cause the chassis 3 to sag. The fact that the pivot axis 5 is mounted on both the support 1 and the pivoting frame 3 makes it possible to ensure good characteristics of resistance to deformation, in particular in the case where the structure comprises automated means for assisting the tilting. The structure absorbs all the forces generated by the rotation of the frame 3 around the pivot axis 5, which avoids the installation of a supporting structure. Attractive gains in terms of cost, size and aesthetics are then generated. Thanks to the fixing and articulation device described above, it is not necessary to provide supporting structure or ancillary furniture. The support 1 of the device is indeed directly attached to the wall and / or the ground. It is thus possible to fix it indifferently to any location of a room and the presence of a wall is not necessary. Furthermore, when the retractable bed is lying down or lying down, that is to say when it is folded forward, nothing distinguishes it from a fixed conventional bed. The size of the retractable bed corresponds to the dimensions of the bed itself, which makes it possible to make the best use of the space available in the room where the bed is fixed. Furthermore, it it is possible to provide a covering for the pivoting frame 3 and the support 1, so that in the folded position the different elements merge with the decor of the room in which the bed is installed. The frame 3 comprises a substantially rectangular frame 11 consisting of side bars 11a and rear and front bars 11b and inner bars forming a cross 12 and connected to the bars 11a and 11b. The pivot axis 5 is mounted on the pivoting frame 3 away from its rear end, so that the pivoting frame 3 extends rearwardly beyond the pivot axis 5. The structure 100 can in addition, comprise automated means for assisting the tilting of the pivoting frame 3, for example, cylinders or electric motors. In this case, the reinforcing bar 6 can also serve as a support for these automated means, because it is sufficiently rigid to withstand loads of the order of 250 kg / cm 2. Such automated means are then preferably fixed between the stiffening profile 10 of the reinforcing bar 6 and the pivoting frame 3. As shown in particular in FIGS. 6 and 7, lateral pneumatic support cylinders 13 are installed between the reinforcement bar 6 and the lateral bars 11a of the frame 11 and a user-controllable actuating cylinder 14 are installed between the middle of the reinforcement bar 6 and the central bar 12a of the cross 12 parallel to the bars Lateral li a. As shown in FIG. 10, the reinforcement transverse bar 6 carries a set screw 6a which constitutes a limit stop in the upper position of the frame 3 and which makes it possible to adjust the final vertical position in the folded position of the frame 3. In a variant, the final vertical position in positi folded chassis 3 could be achieved by adjusting the length of the aforementioned cylinders, for example by screw-nut systems. Referring to Figures 8 and 9, it can be seen that the structure 100 may further include a particular fixed liner described below. On the outer faces of the flanges 2 are fixed substantially rectangular lower side flanks 16, which are larger upwards and towards the front. The flanges 2 could be inserted into suitable recesses of the flanks 16. The lower side flanks 15 are extended upwards by upper lateral flanks 16 which have vertical front edges recessed towards the rear relative to the vertical front edges of the flanks 15. A transverse and vertical rear wall 17 joins the lateral flanks 15 and 16, this rear wall 17 being recessed rearwardly with respect to the vertical front edges of the upper lateral flanks 16 and slightly recessed towards the front relative at their vertical back edges. A front transverse plinth 18 joins the lower portions of the leading edges of the lower flanks 15. The structure 100 may further comprise a movable cladding described below. The frame 3 carries a casing box 19 which includes side walls 20, a front wall 21 which faces the ground when it is in its extended position and which is fixed on the bars 7 of the frame 3 to provide a space between the frame 1 1 and the front wall 21 to accommodate the cylinders 13 and 14, as well as a front transverse wall 22 located on the side of the front free end of the frame 3 and a rear transverse wall 23 located on the side of the rear free end of the frame 3. The front wall 22 extends downwardly so as to constitute a foot 22a resting on the ground when the frame 3 is elongated. The rear portions of the side walls 20 are engaged between the flanges 2 of the support 1 and close and have rear edges coming close to the reinforcing bar 6 when the frame is in its extended position. The rear portion of the front wall 21 is also engaged between the flanges 2 of the support 1 and passes below the reinforcing bar 6 when the frame is in its extended position. The side walls 20, the front transverse wall 22 and the transverse rear wall 23 protrude upwardly from the frame 1 1 to extend laterally to a bed base and a mattress installed on the frame 1 1. When the frame 3 is in its position elongate, the upper edges of the side walls 20 are slightly below the upper edges of the lower flanks 15 When the frame 3 is brought to its folded, vertical position, the side walls 20 of its casing engage in part between the upper flanks 16, the front wall 21 comes close to the front edges of the lower flanks 15, the lower rear edge of the front wall 21 comes close to the upper edge of the transverse plinth 18 and the upper edge of the rear transverse wall 23 comes close the lower edge of the fixed rear transverse wall 17. As shown in Figure 8, when the frame 3 is in its vertical position, the casing which has just been described has the appearance of a cupboard which encloses it with its bedding. As shown in FIG. 9, when the frame 3 is in its extended position, the described covering confines the periphery of the bedding and the reduced width of the upper flanks 16 does not constitute an inconvenience for the users. The structure 100 which has just been described can be applied to form a bed whose direction of length and therefore of the coating can extend as well perpendicular to the pivot axis 5 as parallel to the latter. Furthermore, the lower flanks 15 and the upper flanks 16 may advantageously constitute furniture walls or storage shelves placed on either side of the structure 100. The present invention is not limited to the particular embodiments. described above. Many variations are possible without departing from the scope of the appended claims.

Claims

REVENDICATIONS
1. Structure de meuble pliable, en particulier lit escamotable, comprenant un support comportant deux flasques latéraux parallèles et espacés, de forme sensiblement rectangulaire et présentant deux coins inférieurs avant et arrière et des coins supérieurs avant et arrière et un châssis pivotant, de forme sensiblement rectangulaire, qui présente une partie d' extrémité arrière engagée entre lesdits flasques et qui est monté à rotation sur ces derniers entre une position repliée sensiblement verticale et une position allongée ou ouverte vers l'avant sensiblement horizontale, caractérisée par le fait qu' elle comprend : au moins une traverse (4) qui est sensiblement perpendiculaire auxdits flasques (2) et fixée sur ces derniers et qui est destiné à être en contact avec le sol ou avec un mur et comporte des moyens de fixation au sol ou au mur ; un axe transversal de pivotement (5) qui s' étend sensiblement perpendiculaire auxdits flasques et monté sur ledit châssis (3) et dont les extrémités sont montées pivotante sur lesdits flasques dans une zone proche de leurs coins supérieurs avant ; et une barre transversale (6) de renfort anti-torsion, sensiblement perpendiculaire auxdits flasques, solidaire de ces derniers et disposée dans une zone située en dessous dudit axe de pivotementA foldable furniture structure, in particular a retractable bed, comprising a support comprising two parallel and spaced lateral flanges, of substantially rectangular shape and having two lower front and rear corners and upper front and rear corners and a pivoting frame, of substantially rectangular, which has a rear end portion engaged between said flanges and which is rotatably mounted thereon between a substantially vertical folded position and a substantially horizontal elongated or open position, characterized in that it comprises at least one crossbar (4) which is substantially perpendicular to said flanges (2) and fixed thereto and which is intended to be in contact with the ground or with a wall and comprises means for attachment to the ground or to the wall; a transverse axis of pivoting (5) which extends substantially perpendicular to said flanges and mounted on said frame (3) and whose ends are pivotally mounted on said flanges in an area near their upper front corners; and a transverse bar (6) anti-torsion reinforcement, substantially perpendicular to said flanges, integral with the latter and disposed in an area below said pivot axis
(5). (5).
2. Structure selon la revendication 1 , caractérisée par le fait qu' elle comporte au moins deux traverses qui sont sensiblement parallèles entre elles et sensiblement perpendiculaires auxdits flasques et dont l 'une est destinée à être en contact avec le sol et l ' autre est destinée à être en contact avec un mur, ces traverses comportant des moyens de fixation au sol et au mur. 2. Structure according to claim 1, characterized in that it comprises at least two cross members which are substantially parallel to each other and substantially perpendicular to said flanges and one of which is intended to be in contact with the ground and the other is intended to be in contact with a wall, these sleepers having means for fixing the floor and the wall.
3. Structure selon l ' une des revendications 1 et 2, caractérisée par le fait qu' elle comporte trois traverses solidaires des flasques, qui sont sensiblement parallèles entre elles et sensibl ement perpendiculaires auxdits flasques, lesdites traverses étant fixées aux flasques au niveau de leurs deux coins inférieurs et du coin supérieur arrière et comportant des moyens de fixation au sol et au mur. 3. Structure according to one of claims 1 and 2, characterized in that it comprises three cross members integral flanges, which are substantially parallel to each other and substantially perpendicular to said flanges, said cross members being fixed to the flanges at their two lower corners and the upper rear corner and having means for fixing the floor and the wall.
4. Structure selon la revendication 1, caractérisée par le fait que ledit axe transversal de pivotement (5a) s' étend d' un flasque à l' autre. 4. Structure according to claim 1, characterized in that said transverse axis of pivoting (5a) extends from one flange to the other.
5. Structure selon la revendication 4, caractérisée par le fait que ledit axe transversal de pivotement s' étend au travers d' un fourreau transversal (5b) solidaire du châssis pivotant. 5. Structure according to claim 4, characterized in that said transverse axis of pivoting extends through a transverse sheath (5b) integral with the pivoting frame.
6. Structure selon l'une quelconque des revendications précédentes, caractérisée par le fait que ladite barre transversale de renfort porte au moins une butée d' arrêt (15) dudit châssis pivotant à sa position repliée. 6. Structure according to any one of the preceding claims, characterized in that said reinforcement transverse bar carries at least one stopper (15) of said pivoting frame to its folded position.
7. Structure selon l'une quelconque des revendications précédentes, caractérisée par le fait qu' elle comprend des moyens de réglage (15 ; 13 , 14) de la position repliée dudit châssis pivotant. 7. Structure according to any one of the preceding claims, characterized in that it comprises adjustment means (15; 13, 14) of the folded position of said pivot frame.
8. Structure selon l'une quelconque des revendications précédentes, caractérisée par le fait que ledit châssis pivotant (3) s' étend vers l' arrière au-delà dudit axe transversal de pivotement (5). 8. Structure according to any one of the preceding claims, characterized in that said pivot frame (3) extends rearwardly beyond said transverse axis of pivoting (5).
9. Structure selon l'une quelconque des revendications précédentes, caractérisée par le fait qu ' elle comprend des moyens (13 , 14) d'assistance au basculement dudit châssis pivotant, qui sont installés entre ce châssis (3) et ladite barre transversal de renfort (6) . 9. Structure according to any one of the preceding claims, characterized in that it comprises means (13, 14) for assisting the tilting of said pivot frame, which are installed between the frame (3) and said transverse bar of reinforcement (6).
10. Structure selon l'une quelconque des revendications précédentes, caractérisée par le fait qu'elle comporte des flancs d 'habillage inférieurs (15) fixés sur et couvrant les faces extérieures desdits flasques, et que ledit châssis porte un caisson d'habillage qui comprend des parois latérales (20) et une paroi frontale (21) qui vient en regard du sol lorsqu'il est à sa position allongée, la partie arrière dudit caisson étant engagée entre lesdits flancs d'habillage inférieurs de telle sorte que lesdites parois latérales s' étendent à proximité de ces flancs d' habillage inférieurs. 10. Structure according to any one of the preceding claims, characterized in that it comprises lower trim flanks (15) fixed on and covering the outer faces of said flanges, and said frame carries a casing box which comprises side walls (20) and a front wall (21) which faces the ground when in its extended position, the rear part of said box being engaged between said lower side walls so that said side walls extend near these lower skin flanks.
11. Structure selon la revendication 10, caractérisée par le fait que, lorsque ledit châssis est à sa position repliée, les bords latéraux de jonction des parois latérales (20) et de ladite paroi frontale (21) s' étendent à proximité des bords avant desdits flancs d'habillage inférieurs, 11. Structure according to claim 10, characterized in that, when said frame is in its folded position, the lateral edges of junction of the side walls (20) and said front wall (21) extend near the front edges. said lower skin flanks,
12. Structure selon l'une des revendications 10 et 11 , caractérisée par le fait qu 'elle comprend une plinthe avant inférieure ( 18) rejoignant les bords inférieurs avant desdits flancs d'habillage inférieurs (15), ladite paroi frontale (21) présentant un bord arrière (21 a) situé à proximité du bord supérieur de ladite plinthe avant lorsque ledit châssis est à sa position repliée. 12. Structure according to one of claims 10 and 11, characterized in that it comprises a lower front plinth (18) joining the lower front edges of said lower casing flanks (15), said front wall (21) having a rear edge (21a) located near the upper edge of said front plinth when said frame is in its folded position.
13. Structure selon l'une des revendications 10 à 12, caractérisée par le fait qu' elle comporte des flancs d'habillage supérieurs (16) prolongeant vers le haut lesdits flancs d'habillage inférieurs et présentant des bords avant décalés vers l ' arrière par rapport aux bords avant desdits flancs d'habillage inférieurs, lesdits parois latérales portées par ledit châssis s' engageant en partie entre et à proximité desdits flancs d'habillage supérieurs lorsque ledit châssis est à sa position repliée. 13. Structure according to one of claims 10 to 12, characterized in that it comprises upper trim flanks (16) upwardly extending said lower skin flanks and having front edges staggered rearwardly. relative to the front edges of said lower lining flanks, said side walls carried by said frame partially engaging between and near said upper lining flanks when said frame is in its folded position.
14. Structure selon l'une quelconque des revendications 10 à 13 , caractérisée par le fait qu ' elle comporte une paroi d'habillage arrière (17) s'étendant entre lesdits flancs d' habillage, ledit châssis portant une paroi arrière dont le bord supérieur vient à proximité du bord inférieur de cette paroi d' habillage arrière lorsque ledit châssis est à sa position allongée. 14. Structure according to any one of claims 10 to 13, characterized in that it comprises a rear wall (17) extending between said sidewalls, said frame carrying a rear wall whose edge upper end comes close to the lower edge of this rear cladding wall when said frame is in its extended position.
15. Structure selon la revendication 14, caractérisée par le fait que ledit caisson comprend une paroi avant (22) rejoignant les bords avant desdites parois latérales et de ladite paroi frontale et dont le bord supérieur vient à proximité de ladite paroi d'habillage arrière. 15. Structure according to claim 14, characterized in that said box comprises a front wall (22) joining the front edges of said side walls and said front wall and whose upper edge comes close to said rear wall lining.
EP05736660A 2004-03-09 2005-03-07 Collapsible furniture construction, particularly for a foldaway bed Active EP1722658B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05736660T PL1722658T3 (en) 2004-03-09 2005-03-07 Collapsible furniture construction, particularly for a foldaway bed

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0402428A FR2867368B1 (en) 2004-03-09 2004-03-09 FIXING AND ARTICULATING DEVICE FOR SWIVEL CHASSIS, IN PARTICULAR FOR A RETRACTABLE BED
PCT/FR2005/000540 WO2005087053A2 (en) 2004-03-09 2005-03-07 Collapsible furniture construction, particularly for a foldaway bed

Publications (2)

Publication Number Publication Date
EP1722658A2 true EP1722658A2 (en) 2006-11-22
EP1722658B1 EP1722658B1 (en) 2011-09-07

Family

ID=34896392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05736660A Active EP1722658B1 (en) 2004-03-09 2005-03-07 Collapsible furniture construction, particularly for a foldaway bed

Country Status (11)

Country Link
US (1) US7631374B2 (en)
EP (1) EP1722658B1 (en)
JP (1) JP2007528245A (en)
CN (1) CN1946315A (en)
AT (1) ATE523113T1 (en)
CA (1) CA2557925A1 (en)
ES (1) ES2378315T3 (en)
FR (1) FR2867368B1 (en)
PL (1) PL1722658T3 (en)
RU (1) RU2372008C2 (en)
WO (1) WO2005087053A2 (en)

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CN101721066B (en) * 2009-11-16 2011-09-14 西南交通大学 Multifunctional combined wall bed
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Also Published As

Publication number Publication date
US20080229497A1 (en) 2008-09-25
JP2007528245A (en) 2007-10-11
RU2372008C2 (en) 2009-11-10
FR2867368B1 (en) 2006-06-23
PL1722658T3 (en) 2012-06-29
EP1722658B1 (en) 2011-09-07
US7631374B2 (en) 2009-12-15
WO2005087053A2 (en) 2005-09-22
RU2006135379A (en) 2008-04-20
FR2867368A1 (en) 2005-09-16
CA2557925A1 (en) 2005-09-22
ATE523113T1 (en) 2011-09-15
ES2378315T3 (en) 2012-04-11
CN1946315A (en) 2007-04-11
WO2005087053A3 (en) 2005-12-22

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