EP0395531A1 - Mechanism for articulating the elements of a sofa convertible into several positions - Google Patents

Mechanism for articulating the elements of a sofa convertible into several positions Download PDF

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Publication number
EP0395531A1
EP0395531A1 EP90401156A EP90401156A EP0395531A1 EP 0395531 A1 EP0395531 A1 EP 0395531A1 EP 90401156 A EP90401156 A EP 90401156A EP 90401156 A EP90401156 A EP 90401156A EP 0395531 A1 EP0395531 A1 EP 0395531A1
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EP
European Patent Office
Prior art keywords
flange
seat
ratchet
mechanism according
wing
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Granted
Application number
EP90401156A
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German (de)
French (fr)
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EP0395531B1 (en
Inventor
Edouard Doriry
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Nouvelle Meral Ste
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Nouvelle Meral Ste
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Publication of EP0395531A1 publication Critical patent/EP0395531A1/en
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    • 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
    • A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
    • A47C17/16—Seating furniture changeable to beds by tilting or pivoting the back-rest
    • A47C17/17—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat
    • A47C17/175—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat with tilting or lifting seat-back-rest pivot
    • A47C17/1756—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat with tilting or lifting seat-back-rest pivot by pivoted linkages

Definitions

  • the invention relates to a hinge mechanism for the seat element and the back element of a convertible bench seat, allowing the installation thereof in several positions, for example a bed position, a position seat and an intermediate position called relaxed seat position.
  • the mechanism according to the invention which is in the form of a removable module which can be interchangeable, is designed to operate in pairs, one copy being associated with each of the two sides of the bench. It is of the type comprising a first square-shaped flange fixed to the backrest element of the bench seat, a second square-shaped flange fixed to the seat element of the bench seat, articulated connection means between said flanges, and a notched ratchet allowing the relative immobilization of the back and seat elements in one or more positions, for example in seat and relaxed seat positions.
  • This mechanism is characterized in that the connection between the two flanges is carried out by means of links articulated to the two flanges so that the latter, in the bed position of the bench seat elements, come in a partially superimposed arrangement.
  • the vertical wing of the first flange is arranged above the horizontal wing of this flange fixed by its inner face to the underside of the backrest element, while the vertical flange of the second flange is arranged below the horizontal flange of this flange on the outer face of which the lower face of the seat element is fixed, so that the joint is of the non-protruding type having no component which protrudes in the part reserved for the sleeping surface or in the rear part of the backrest.
  • the fixing of the back and seat elements by their lower face to the corresponding flanges prevents any risk of shearing and therefore of destruction of the assembly by the appearance of play.
  • the axes of articulation of the connecting rods to the first flange are located above the horizontal wing of this flange, while the axes of articulation of said connecting rods to the second flange are arranged below the horizontal wing of this flange.
  • This arrangement is advantageous when the mattress is placed on the seat and backrest elements, because it allows, during transition maneuvers between the different positions, to release the seat element without compression of the mattress. In addition, this allows the angle between the seat element and the back element to be changed, in the seat position or in the intermediate position, without thereby modifying the seat slope which remains at the desired angle.
  • the vertical wing of the first flange can also be arranged below the horizontal wing of this flange, the outer face of which is then fixed to the backrest element.
  • the notched ratchet is articulated to the second flange and has on its upper face one or more notches intended to selectively engage one end of the first flange under the action of a spring while this spring can cooperate with a notch the underside of the ratchet to immobilize it in an erasing position allowing the arrangement of the elements of the bench in the bed position.
  • the engagement of the end of the first flange in the notch (s) of the ratchet produces an audible signal announcing to the user that the mechanism has reached the desired position, for example the position of seat or of relaxed seat.
  • the articulation is carried laterally, from the base of the cabinet, by pivoting rods and one of these rods carries a stop which, in the seat or relaxed seat position of the bench, is engaged by the underside of the ratchet by providing positive and irreversible locking of the chosen relative position of the seat and back elements.
  • the articulation according to the invention allows rotation between the seat and back planes from a fictitious axis located above all the thicknesses to be folded, which allows a connection between the mattress and the seat and back elements, without sliding movement between them. This therefore keeps the profile of the furniture intact during the transition between the various positions, in particular between the extreme positions of bed and seat. Until then only the protruding joints, with the drawbacks which ensued, allowed such a result.
  • the articulation according to the invention allows the user to actuate the mechanism while facing the furniture, by acting on the seat element, therefore in a place which obviously is always accessible (which does not is not always the case when this actuation must be carried out from the rear, by acting on the backrest element).
  • a convertible bench comprising a back element 1 and a seat element 2 each receiving a mattress element, respectively 3 and 4.
  • the backrest 1 and seat 2 elements are connected together and to the base 5 of the piece of furniture by two articulation linkages arranged on each side of the piece of furniture, these two linkages being symmetrical with respect to the median longitudinal vertical plane.
  • Each articulation linkage comprises a support flank 6, fixed on the side of the base 5 and on which the ends of two main links 7,8 are articulated.
  • the opposite ends of the links 7,8 are articulated to the vertical wing of a flange 9 on the horizontal wing of which is fixed the back element 1.
  • the links 7,8 form with the side 6 and the flange 9 a deformable parallelogram and allow, according to their angle of rotation, the change of position of the flange 9.
  • a spring 10, hung on the side 6 and on the rod 7, ensures the return of the crankshaft in its front position corresponding to the position of bed.
  • the ends of two connecting rods 11,12 are articulated on the vertical wing of a flange 13 in the form of an angle whose horizontal wing is fixed to the seat element 2.
  • the seat element 2 is fixed to the outer face of the horizontal wing of the flange 13 (disposed above the vertical wing of this flange)
  • the backrest element 1 is fixed to the inner face of the horizontal flange of the flange 9 (disposed below the vertical flange of this flange) so that in the bed position, while the flanges 9 and 13 are partially superimposed, the mattress elements 3 and 4 are in the extension of one another.
  • the length of the links 11,12 and the location of their points of articulation on the flanges 9 and 13 are chosen so that these links form a deformable parallelogram allowing the flanges 9,13 to be brought closer or further apart at angles different.
  • a notching ratchet 15 having on its upper face two successive notches 16, 17 intended to selectively engage the end 18, of corresponding shape, of the flange 9.
  • the notch 16 of the ratchet 15 ends with a spout 16 ′.
  • the spring 19 has a hook-shaped end 20 which, in a pushed-back position of the ratchet 15, can engage in a notch 21 on the underside thereof, to immobilize the ratchet 15 in a released position (position of Figure 4).
  • a pushed-back position of the ratchet 15 can engage in a notch 21 on the underside thereof, to immobilize the ratchet 15 in a released position (position of Figure 4).
  • the ratchet 15 comes to bear on a stop 22 carried by the link 7 while ensuring a positive and irreversible locking of the position (seat or relax ) chosen between the flanges 9 and 13.
  • a cover 23 for example of plastic, which puts the ratchet 15 and the spring 19 out of contact with the bedding.
  • This cover 23 serves at the same time as protection, reinforcement and guide for the engagement of the end 18 of the flange 9 on the ratchet 15.
  • the back element 1 and more particularly the upper part of the latter follows a practically vertical downward movement of rectilinear. This makes it possible to pass from one to the other of the positions of the bench seat without the need to separate it from a wall against which it would be placed.

Abstract

The vertical flange of the side plate 9 integral with the back element is connected to the vertical flange of the side plate 13 carrying the seating element by two pivoting small rods 11, 12, the two side plates being partially superposed in the seat position. A notched ratchet mechanism 15 is articulated on the side plate 13 and is stressed by a spring 19 in order to engage, in the seat position, via one or the other of its notches 16, 17, the end 18 of the side plate 9. In order to convert into the bed position, the ratchet mechanism 15 comes into a release position in which it is held by engagement of an end 20 of the spring 19 in a slot 21 of the ratchet mechanism 15. The mechanism is applicable to sofas which can be converted to two positions, three positions or more. <IMAGE>

Description

L'invention concerne un mécanisme d'articulation de l'élément d'assise et de l'élément de dossier d'une banquette convertible, permettant l'installation de celle-ci dans plusieurs positions, par exemple une position de lit, une position de siège et une position intermédiaire dite position de siège relax.The invention relates to a hinge mechanism for the seat element and the back element of a convertible bench seat, allowing the installation thereof in several positions, for example a bed position, a position seat and an intermediate position called relaxed seat position.

Elle a plus particulièrement pour objet un tel mécanisme qui soit facilement démontable et interchangeable, qui soit du type dit "clic-clac" c'est-à-dire où l'obtention de certaines positions recherchées du meuble sont repérables par un signal sonore, qui soit non saillante c'est-à-dire dont aucune partie ne fasse saillie dans la partie réservée au matelas ainsi que dans la partie arrière du dossier, qui empêche tout mouvement de glissement entre le matelas et l'élément d'assise ou de dossier, et dont la manoeuvre puisse être facilement effectuée, même dans des locaux exigusIt relates more particularly to such a mechanism which is easily removable and interchangeable, which is of the so-called "click-clack" type, that is to say where obtaining certain desired positions of the furniture can be identified by an audible signal, which is not projecting, that is to say of which no part protrudes in the part reserved for the mattress as well as in the rear part of the backrest, which prevents any movement of sliding between the mattress and the seat element or file, and the operation of which can be easily carried out, even in confined spaces

Le mécanisme selon l'invention, qui se présente sous la forme d'un module démontable pouvant être interchangeable, est conçu pour fonctionner par paire, un exemplaire étant associé à chacun des deux côtés de la banquette. Il est du genre comprenant un premier flasque en forme d'équerre fixé à l'élément de dossier de la banquette, un second flasque en forme d'équerre fixé à l'élément d'assise de la banquette, des moyens de liaison articulée entre lesdits flasques, et un rochet cranté permettant l'immobilisation relative des éléments de dossier et d'assise dans une ou plusieurs positions, par exemple dans des positions de siège et de siège relax. Ce mécanisme se caractérise en ce que la liaison entre les deux flasques est réalisée au moyen de biellettes articulées aux deux flasques de façon que ceux-ci, en position de lit des éléments de banquette, viennent dans une disposition partiellement superposée.The mechanism according to the invention, which is in the form of a removable module which can be interchangeable, is designed to operate in pairs, one copy being associated with each of the two sides of the bench. It is of the type comprising a first square-shaped flange fixed to the backrest element of the bench seat, a second square-shaped flange fixed to the seat element of the bench seat, articulated connection means between said flanges, and a notched ratchet allowing the relative immobilization of the back and seat elements in one or more positions, for example in seat and relaxed seat positions. This mechanism is characterized in that the connection between the two flanges is carried out by means of links articulated to the two flanges so that the latter, in the bed position of the bench seat elements, come in a partially superimposed arrangement.

Conformément à une forme de réalisation avantageuse de l'invention l'aile verticale du premier flasque est disposée au-dessus de l'aile horizontale de ce flasque fixée par sa face intérieure à la face inférieure de l'élément de dossier, alors que l'aile verticale du second flasque est disposée au-dessous de l'aile horizontale de ce flasque à la face extérieure de laquelle est fixée la face inférieure de l'élément d'assise, de sorte que l'articulation est du type non saillant en n'ayant aucun organe constitutif qui fasse saillie dans la partie réservée à la surface de couchage ni dans la partie arrière du dossier. La fixation des éléments de dossier et d'assise par leur face inférieure aux flasques correspondants empêche tout risque de cisaillage et donc de destruction de l'assemblage par apparition de jeu. On remarquera que les axes d'articulation des biellettes de liaison au premier flasque sont situés au-dessus de l'aile horizontale de ce flasque, alors que les axes d'articulation des dites biellettes de liaison au second flasque sont disposés au-dessous de l'aile horizontale de ce flasque. Cette disposition est avantageuse lorsque le matelas est posé sur les éléments de siège et de dossier, car elle permet lors des manoeuvres de transition entre les différentes positions de dégager l'élément de siège sans compression du matelas. De plus cela permet de changer l'angle entre l'élément de siège et l'élément de dossier, en position de siège ou en position intermédiaire, sans pour cela modifier la pente d'assise qui reste à l'angle voulu.In accordance with an advantageous embodiment of the invention, the vertical wing of the first flange is arranged above the horizontal wing of this flange fixed by its inner face to the underside of the backrest element, while the the vertical flange of the second flange is arranged below the horizontal flange of this flange on the outer face of which the lower face of the seat element is fixed, so that the joint is of the non-protruding type having no component which protrudes in the part reserved for the sleeping surface or in the rear part of the backrest. The fixing of the back and seat elements by their lower face to the corresponding flanges prevents any risk of shearing and therefore of destruction of the assembly by the appearance of play. It will be noted that the axes of articulation of the connecting rods to the first flange are located above the horizontal wing of this flange, while the axes of articulation of said connecting rods to the second flange are arranged below the horizontal wing of this flange. This arrangement is advantageous when the mattress is placed on the seat and backrest elements, because it allows, during transition maneuvers between the different positions, to release the seat element without compression of the mattress. In addition, this allows the angle between the seat element and the back element to be changed, in the seat position or in the intermediate position, without thereby modifying the seat slope which remains at the desired angle.

Toutefois, selon l'invention, l'aile verticale du premier flasque peut aussi être disposée au-dessous de l'aile horizontale de ce flasque dont c'est alors la face extérieure qui est fixée à l'élément de dossier.However, according to the invention, the vertical wing of the first flange can also be arranged below the horizontal wing of this flange, the outer face of which is then fixed to the backrest element.

Selon l'invention, le rochet cranté est articulé au second flasque et présente sur sa face supérieure un ou plusieurs crans destinés à engager sélectivement une extrémité du premier flasque sous l'action d'un ressort alors que ce ressort peut coopérer avec une encoche de la face inférieure du rochet pour immobiliser celui-ci dans une position d'effacement autorisant la disposition des éléments de la banquette en position de lit. L'engagement de l'extrémité du premier flasque dans le ou les crans du rochet produit un signal sonore annonçant à l'utilisateur que le mécanisme a atteint la position désirée, par exemple la position de siège ou de siège relax.According to the invention, the notched ratchet is articulated to the second flange and has on its upper face one or more notches intended to selectively engage one end of the first flange under the action of a spring while this spring can cooperate with a notch the underside of the ratchet to immobilize it in an erasing position allowing the arrangement of the elements of the bench in the bed position. The engagement of the end of the first flange in the notch (s) of the ratchet produces an audible signal announcing to the user that the mechanism has reached the desired position, for example the position of seat or of relaxed seat.

L'articulation est portée latéralement, à partir du socle du meuble, par des biellettes pivotantes et l'une de ces biellettes porte une butée qui, en position de siège ou de siège relax de la banquette, est engagée par la face inférieure du rochet en fournissant un verrouillage positif et irréversible de la position relative choisie des éléments de siège et de dossier.The articulation is carried laterally, from the base of the cabinet, by pivoting rods and one of these rods carries a stop which, in the seat or relaxed seat position of the bench, is engaged by the underside of the ratchet by providing positive and irreversible locking of the chosen relative position of the seat and back elements.

On remarquera que l'articulation selon l'invention permet la rotation entre les plans d'assise et de dossier à partir d'un axe fictif situé au-dessus de toutes les épaisseurs à plier ce qui permet une liaison entre le matelas et les éléments d'assise et de dossier, sans mouvement de glissement entre ceux-ci. Cela permet donc de garder le profil du meuble intact pendant la transition entre les diverses positions, en particulier entre les positions extrêmes de lit et de siège. Jusqu'alors seules les articulations saillantes, avec les inconvénients qui en découlent, permettaient un tel résultat.It will be noted that the articulation according to the invention allows rotation between the seat and back planes from a fictitious axis located above all the thicknesses to be folded, which allows a connection between the mattress and the seat and back elements, without sliding movement between them. This therefore keeps the profile of the furniture intact during the transition between the various positions, in particular between the extreme positions of bed and seat. Until then only the protruding joints, with the drawbacks which ensued, allowed such a result.

L'articulation selon l'invention permet à l'utilisateur d'actionner le mécanisme en étant face au meuble, en agissant sur l'élément d'assise, donc à un endroit qui à l'évidence est toujours accessible (ce qui n'est pas toujours le cas lorsque cet actionnement doit s'effectuer par l'arrière, en agissant sur l'élément de dossier).The articulation according to the invention allows the user to actuate the mechanism while facing the furniture, by acting on the seat element, therefore in a place which obviously is always accessible (which does not is not always the case when this actuation must be carried out from the rear, by acting on the backrest element).

Pour bien faire comprendre le dispositif selon l'invention on en décrira ci-après, à titre d'exemple sans caractère limitatif, une forme d'exécution préférée en référence au dessin schématique annexé dans lequel :

  • la figure 1 est une vue de côté d'une banquette convertible à trois positions équipée d'un système d'articulation selon l'invention, la banquette étant représentée en position de siège ;
  • la figure 2 est une vue à plus grande échelle montrant en trait plein le système d'articulation en position de siège et, en trait mixte, ce système en position de lit ;
  • la figure 3 est une vue de côté de la banquette convertible en position de lit ;
  • les figures 4 et 5 montrent plus particulièrement comment s'effectue la commande de l'articulation pour le passage de la position de siège à la position de lit ; et
  • la figure 6 est à plus grande échelle une vue en élévation partielle du système d'embiellage reliant les élément d'assise et de dossier au socle du meuble.
To make the device according to the invention clearly understood, a preferred embodiment of it will be described below, by way of non-limiting example, with reference to the appended schematic drawing in which:
  • Figure 1 is a side view of a three-position convertible seat equipped with a hinge system according to the invention, the seat being shown in the seat position;
  • Figure 2 is an enlarged view showing in solid lines the articulation system in the seat position and, in phantom, this system in the bed position;
  • Figure 3 is a side view of the convertible seat in the bed position;
  • FIGS. 4 and 5 show more particularly how the articulation is controlled for the passage from the seat position to the bed position; and
  • Figure 6 is on a larger scale a partial elevational view of the connecting rod system connecting the seat and back elements to the base of the furniture.

Au dessin on a représenté une banquette convertible comprenant un élément de dossier 1 et un élément d'assise 2 recevant chacun un élément de matelas, respectivement 3 et 4.In the drawing, there is shown a convertible bench comprising a back element 1 and a seat element 2 each receiving a mattress element, respectively 3 and 4.

Les éléments de dossier 1 et d'assise 2 sont reliés ensemble et au socle 5 du meuble par deux embiellages d'articulation disposés de chaque côté du meuble, ces deux embiellages étant symétriques par rapport au plan vertical longitudinal médian.The backrest 1 and seat 2 elements are connected together and to the base 5 of the piece of furniture by two articulation linkages arranged on each side of the piece of furniture, these two linkages being symmetrical with respect to the median longitudinal vertical plane.

Chaque embiellage d'articulation comprend un flanc de support 6, fixé sur le côté du socle 5 et sur lequel sont articulées les extrémités de deux biellettes principales 7,8. Les extrémités opposées des biellettes 7,8 sont articulées à l'aile verticale d'un flasque 9 sur l'aile horizontale duquel est fixé l'élément de dossier 1. Les biellettes 7,8 forment avec le flanc 6 et le flasque 9 un parallélogramme déformable et permettent, selon leur angle de rotation, le changement de position du flasque 9. Un ressort 10, accroché sur le flanc 6 et sur la biellette 7, assure le rappel de l'embiellage dans sa position avant correspondant à la position de lit.Each articulation linkage comprises a support flank 6, fixed on the side of the base 5 and on which the ends of two main links 7,8 are articulated. The opposite ends of the links 7,8 are articulated to the vertical wing of a flange 9 on the horizontal wing of which is fixed the back element 1. The links 7,8 form with the side 6 and the flange 9 a deformable parallelogram and allow, according to their angle of rotation, the change of position of the flange 9. A spring 10, hung on the side 6 and on the rod 7, ensures the return of the crankshaft in its front position corresponding to the position of bed.

A la partie avant du flasque 9 sont articulées les extrémités de deux biellettes de liaison 11,12, dont les extrémités opposées sont articulées sur l'aile verticale d'un flasque 13 en forme de cornière dont l'aile horizontale est fixée à l'élément d'assise 2. Comme on le voit à la figure 3, l'élément d'assise 2 est fixé sur la face extérieure de l'aile horizontale du flasque 13 (disposée au-dessus de l'aile verticale de ce flasque), alors que l'élément de dossier 1 est fixé à la face intérieure de l'aile horizontale du flasque 9 (disposée au-dessous de l'aile verticale de ce flasque) de sorte qu'en position de lit, alors que les flasques 9 et 13 sont partiellement superposés, les éléments de matelas 3 et 4 sont dans le prolongement l'un de l'autre. La longueur des biellettes 11,12 et l'emplacement de leurs points d'articulation sur les flasques 9 et 13 sont choisis de façon que ces biellettes forment un parallélogramme déformable en permettant de rapprocher ou d'éloigner les flasques 9,13 sous des angles différents.At the front part of the flange 9 are articulated the ends of two connecting rods 11,12, the opposite ends of which are articulated on the vertical wing of a flange 13 in the form of an angle whose horizontal wing is fixed to the seat element 2. As can be seen in FIG. 3, the seat element 2 is fixed to the outer face of the horizontal wing of the flange 13 (disposed above the vertical wing of this flange) , while the backrest element 1 is fixed to the inner face of the horizontal flange of the flange 9 (disposed below the vertical flange of this flange) so that in the bed position, while the flanges 9 and 13 are partially superimposed, the mattress elements 3 and 4 are in the extension of one another. The length of the links 11,12 and the location of their points of articulation on the flanges 9 and 13 are chosen so that these links form a deformable parallelogram allowing the flanges 9,13 to be brought closer or further apart at angles different.

Sur le flasque 13 est monté pivotant autour d'un axe 14, voir en particulier la figure 2, un rochet de crantage 15 présentant sur sa face supérieure deux crans successifs 16,17 destinés à engager sélectivement l'extrémité 18, de forme correspondante, du flasque 9. Le cran 16 du rochet 15 se termine par un bec 16′. Un ressort en spirale 19, porté par le flasque 13, appuie sur la face. inférieure du rochet 15 pour appliquer celui-ci, dans la position de siège et la position relax du meuble, contre l'extrémité 18 du flasque 9. Le ressort 19 présente une extrémité 20 en forme de crochet qui, dans une position repoussée du rochet 15, peut s'engager dans une encoche 21 de la face inférieure de celui-ci, pour immobiliser le rochet 15 dans une position dégagée (position de la figure 4). Lorsque l'une des encoches 16,17 du rochet 15 reçoit l'extrémité 18 du flasque 9, le rochet 15 vient en appui sur une butée 22 portée par la biellette 7 en assurant un verrouillage positif et irréversible de la position (siège ou relax) choisie entre les flasques 9 et 13.On the flange 13 is pivotally mounted about an axis 14, see in particular FIG. 2, a notching ratchet 15 having on its upper face two successive notches 16, 17 intended to selectively engage the end 18, of corresponding shape, of the flange 9. The notch 16 of the ratchet 15 ends with a spout 16 ′. A spiral spring 19, carried by the flange 13, presses on the face. lower of the ratchet 15 to apply it, in the seat position and the relaxed position of the cabinet, against the end 18 of the flange 9. The spring 19 has a hook-shaped end 20 which, in a pushed-back position of the ratchet 15, can engage in a notch 21 on the underside thereof, to immobilize the ratchet 15 in a released position (position of Figure 4). When one of the notches 16, 17 of the ratchet 15 receives the end 18 of the flange 9, the ratchet 15 comes to bear on a stop 22 carried by the link 7 while ensuring a positive and irreversible locking of the position (seat or relax ) chosen between the flanges 9 and 13.

Comme on l'a représenté à la figure 6, on peut avantageusement disposer sur le rochet 15 un cache 23, par exemple en matière plastique, qui met le rochet 15 et le ressort 19 hors de contact d'avec la literie. Ce cache 23 sert tout à la fois de protection, de renfort et de guide pour l'engagement de l'extrémité 18 du flasque 9 sur le rochet 15.As shown in Figure 6, it is advantageous to have on the ratchet 15 a cover 23, for example of plastic, which puts the ratchet 15 and the spring 19 out of contact with the bedding. This cover 23 serves at the same time as protection, reinforcement and guide for the engagement of the end 18 of the flange 9 on the ratchet 15.

0n décrira maintenant le fonctionnement du dispositif. En partant de la banquette dans sa position de siège, avec les éléments de son articulation disposés comme représenté à la figure 2 (l'extrémité 18 du flasque 9 étant engagée dans le cran 16 du rochet 15), il suffit pour obtenir une transformation en lit que l'utilisateur, debout face au meuble, saisisse l'élément d'assise 2 et le lève. Lors de cette opération (voir figure 4), l'élément de dossier 1 bascule de la position verticale à la position horizontale et prend appui sur la partie arrière du socle 5 prévue à cet effet. L'élément de dossier 1 étant en butée contre le socle 5, l'utilisateur continue à pousser sur l'élément d'assise 2, de la position en trait pointillé à la position en trait plein de la figure 4, l'extrémité 18 du flasque 9 engageant le bec 16′ du rochet 15 en faisant pivoter ce dernier dans le sens horaire jusqu'à ce que l'extrémité 20 du ressort 19 s'accroche dans l'encoche 21 du rochet 15 en immobilisant celui-ci en position de dégagement de l'extrémité 18 du flasque 9. L'utilisateur n'a plus qu'à laisser redescendre l'élément d'assise 2 jusqu'à ce qu'il engage la partie avant du socle 5, en venant ainsi dans le prolongement de l'élément de dossier 1 et serré contre celui-ci. Un peu avant la fin du mouvement de retour de l'élément d'assise 2 en position horizontale, voir figure 5, un talon 18′ de l'extrémité du flasque 9 engage la partie plane du rochet 15, ce qui provoque un pivotement du rochet par rapport au flasque 13 et donc un réarmement de ce rochet 15.We will now describe the operation of the device. Starting from the seat in its seat position, with the elements of its articulation arranged as shown in Figure 2 (the end 18 of the flange 9 being engaged in the notch 16 of the ratchet 15), it suffices to obtain a transformation into reads that the user, standing in front of the furniture, grabs the seat element 2 and lifts it. During this operation (see FIG. 4), the backrest element 1 switches from the vertical position to the horizontal position and bears on the rear part of the base 5 provided for this purpose. The backrest element 1 being in abutment against the base 5, the user continues to push on the seat element 2, from the position in dotted lines to the position in solid lines in FIG. 4, the end 18 of the flange 9 engaging the spout 16 ′ of the ratchet 15 by pivoting the latter clockwise until the end 20 of the spring 19 hooks into the notch 21 of the ratchet 15 by immobilizing the latter in position of release of the end 18 of the flange 9. The user only has to let the seat element 2 descend again until he engages the front part of the base 5, thus coming into the extension of the backrest element 1 and clamped against it. A little before the end of the return movement of the seat element 2 in a horizontal position, see FIG. 5, a heel 18 ′ from the end of the flange 9 engages the flat part of the ratchet 15, which causes the pivoting of the ratchet relative to the flange 13 and therefore a rearming of this ratchet 15.

En partant de la position de lit pour revenir à la position de siège, il suffit de lever l'élément de siège comme précédemment jusqu'à l'obtention du premier signal sonore, dû à l'engagement de l'extrémité 18 du flasque 9 dans le cran 17 du rochet 15, annonçant que la position relax est atteinte, ou second signal sonore (dû à l'engagement de l'extrémité 18 dans le cran 16) annonçant l'obtention de la position siège. On rabaisse alors l'élément d'assise 2 jusqu'à venir en butée sur la partie avant du socle 5 et, pendant cette descente, l'élément de dossier 1 remonte de sa position horizontale à une position verticale, tout en reculant vers l'arrière du socle (voir figure 1). Dans cette position, la face inférieure du rochet 15 vient engager la butée 22 en assurant un verrouillage efficace.Starting from the bed position to return to the seat position, it suffices to raise the seat element as before until the first sound signal is obtained, due to the engagement of the end 18 of the flange 9 in the notch 17 of the ratchet 15, announcing that the relax position is reached, or second sound signal (due to the engagement of the end 18 in the notch 16) announcing the obtaining of the seat position. The seat element 2 is then lowered until it comes into abutment on the front part of the base 5 and, during this descent, the back element 1 rises from its horizontal position to a vertical position, while moving back towards the 'rear of the base (see Figure 1). In this position, the underside of the ratchet 15 engages the stop 22 while ensuring effective locking.

On remarquera que, avec le dispositif d'articulation selon l'invention, l'élément de dossier 1 et plus particulièrement la partie supérieure de celui-ci suit un mouvement de descente pratiquement vertical rectiligne. Cela permet de passer de l'une à l'autre des positions de la banquette sans nécessiter d'écarter celle-ci d'un mur contre lequel elle serait placée.It will be noted that, with the articulation device according to the invention, the back element 1 and more particularly the upper part of the latter follows a practically vertical downward movement of rectilinear. This makes it possible to pass from one to the other of the positions of the bench seat without the need to separate it from a wall against which it would be placed.

On comprendra que la description ci-dessus a été donnée à simple titre d'exemple, sans caractère limitatif, et que des adjonctions ou des modifications constructives pourraient y être apportées sans sortir du cadre de l'invention déterminé par les revendications qui suivent.It will be understood that the above description has been given by way of example, without limitation, and that additions or constructive modifications could be made without departing from the scope of the invention determined by the claims which follow.

Claims (9)

1. Mécanisme d'articulation pour banquette convertible à plusieurs positions, comprenant un premier flasque (9) en forme d'équerre fixé à l'élément de dossier (1) de la banquette, un second flasque (13) en forme d'équerre fixé à l'élément d'assise (2) de la banquette, deux biellettes (11, 12) articulées à chacun des deux flasques (9, ,13) pour assurer une liaison articulée entre ceux-ci, et un rochet cranté (15) articulé sur l'un desdits flasques (9, 13) et permettant l'immobilisation relative des éléments de dossier (1) et d'assise (2) dans au moins une position de siège dans laquelle ceux-ci ne sont pas dans le prolongement l'un de l'autre alors que, dans une position de lit de la banquette, les deux flasques (9, 13) viennent dans une disposition partiellement superposée, caractérisé en ce que ledit rochet (15) est articulé sur le second flasque (13) et présente sur sa face supérieure au moins un cran (16, 17) destiné à engager sélectivement une extrémité (18) du premier flasque (9) sous l'action d'un ressort (19), alors que la face inférieure du rochet (15) présente une encoche (21) dans laquelle peut s'engager l'extrémité dudit ressort (19) pour immobiliser le rochet (15) dans une position d'effacement autorisant la disposition des éléments (1, 2) de la banquette en position de lit.1. Articulation mechanism for a convertible bench seat with several positions, comprising a first square flange (9) fixed to the backrest element (1) of the bench seat, a second square flange (13) fixed to the seat element (2) of the seat, two links (11, 12) articulated to each of the two flanges (9,, 13) to ensure an articulated connection between them, and a notched ratchet (15 ) articulated on one of said flanges (9, 13) and allowing the relative immobilization of the backrest (1) and seat (2) elements in at least one seat position in which these are not in the extension of one another while, in a bed position of the bench, the two flanges (9, 13) come in a partially superimposed arrangement, characterized in that said ratchet (15) is articulated on the second flange (13) and has on its upper face at least one notch (16, 17) intended to selectively engage an end é (18) of the first flange (9) under the action of a spring (19), while the underside of the ratchet (15) has a notch (21) in which the end of said spring can engage ( 19) to immobilize the ratchet (15) in an erasing position allowing the arrangement of the elements (1, 2) of the seat in the bed position. 2. Mécanisme selon la revendication 1, caractérisé en ce que l'aile verticale du premier flasque (9) est disposée au-dessus de l'aile horizontale de ce flasque fixée par sa face interne à la face inférieure de l'élément de dossier (1), alors que l'aile verticale du second flasque (13) est disposée au-dessous de l'aile horizontale de ce flasque à la face extérieure de laquelle est fixée la face inférieure de l'élément d'assise (2).2. Mechanism according to claim 1, characterized in that the vertical wing of the first flange (9) is disposed above the horizontal wing of this flange fixed by its internal face to the underside of the backrest element (1), while the vertical wing of the second flange (13) is arranged below the horizontal wing of this flange on the outer face of which is fixed the lower face of the seat element (2) . 3. Mécanisme selon la revendication 1 ou la revendication 2, caractérisé en ce que les axes d'articulation des biellettes de liaison (11, 12) au premier flasque (9) sont situés au-dessus de l'aile horizontale de ce flasque, alors que les axes d'articulation desdites biellettes de liaison (11, 12) au second flasque (13) sont disposés au-dessous de l'aile horizontale de ce flasque.3. Mechanism according to claim 1 or claim 2, characterized in that the axes of articulation of the connecting rods (11, 12) to the first flange (9) are located above the wing horizontal of this flange, while the axes of articulation of said connecting rods (11, 12) to the second flange (13) are arranged below the horizontal wing of this flange. 4. Mécanisme selon la revendication 1, caractérisé en ce que l'aile verticale du premier flasque (9) est disposée au-dessous de l'aile horizontale de ce flasque fixée par sa face externe à la face inférieure de l'élément de dossier (1) alors que l'aile verticale du second flasque (13) est disposée au-dessous de l'aile horizontale de ce flasque à la face extérieure de laquelle est fixée la face inférieure de l'élément d'assise (2).4. Mechanism according to claim 1, characterized in that the vertical wing of the first flange (9) is arranged below the horizontal wing of this flange fixed by its external face to the underside of the backrest element (1) while the vertical wing of the second flange (13) is disposed below the horizontal wing of this flange on the outer face of which is fixed the lower face of the seat element (2). 5. Mécanisme selon l'une quelconque des revendications 1 à 4, caractérisé en ce que ledit rochet cranté (15) présente un bec (16′) destiné à être engagé par l'extrémité (18) du premier flasque (9), lors d'un pivotement du second flasque (13), pour amener le rochet (15) dans sa dite position d'effacement.5. Mechanism according to any one of claims 1 to 4, characterized in that said notched ratchet (15) has a spout (16 ′) intended to be engaged by the end (18) of the first flange (9), during a pivoting of the second flange (13), to bring the ratchet (15) into its said erasing position. 6. Mécanisme selon l'une quelconque des revendications précédentes caractérisé en ce que, en fin de déplacement de l'élément d'assise (2) vers l'horizontale pour l'obtention de la position de lit, le rochet (15) engage un talon (18′) de l'extrémité (18) du premier flasque (9) ce qui, par pivotement de ce rochet (15), dégage le ressort (19) de l'encoche (21) de ce rochet et assure le réarmement dudit rochet (15).6. Mechanism according to any one of the preceding claims, characterized in that, at the end of displacement of the seat element (2) towards the horizontal in order to obtain the bed position, the ratchet (15) engages a heel (18 ′) of the end (18) of the first flange (9) which, by pivoting this ratchet (15), releases the spring (19) from the notch (21) of this ratchet and ensures the resetting said ratchet (15). 7. Mécanisme selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le premier flasque (9) est relié par des biellettes (7, 8) à un support (6) fixé latéralement au socle (5) du meuble.7. Mechanism according to any one of claims 1 to 6, characterized in that the first flange (9) is connected by connecting rods (7, 8) to a support (6) fixed laterally to the base (5) of the cabinet. 8. Mécanisme selon la revendication 7, caractérisé en ce que l'une (7) desdites biellettes porte une butée (22) que vient engager, en position de siège ou en position de siège relax du meuble, la face inférieure du rochet (15) en fournissant un verrouillage irréversible.8. Mechanism according to claim 7, characterized in that one (7) of said links carries a stop (22) which engages, in the seat position or in the relaxed seat position of the piece of furniture, the underside of the ratchet (15 ) by providing an irreversible lock. 9. Mécanisme selon l'une quelconque des revendications précédentes, caractérisé par un cache (23) s'adaptant sur le rochet (15) pour isoler celui-ci de tout élément de literie9. Mechanism according to any one of the preceding claims, characterized by a cover (23) fitting onto the ratchet (15) to isolate the latter from any bedding element.
EP90401156A 1989-04-27 1990-04-27 Mechanism for articulating the elements of a sofa convertible into several positions Expired - Lifetime EP0395531B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8905608 1989-04-27
FR8905608A FR2646331B1 (en) 1989-04-27 1989-04-27 ARTICULATION MECHANISM FOR ELEMENTS OF A BENCH CONVERTIBLE TO MULTIPLE POSITIONS

Publications (2)

Publication Number Publication Date
EP0395531A1 true EP0395531A1 (en) 1990-10-31
EP0395531B1 EP0395531B1 (en) 1994-01-12

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ID=9381197

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Application Number Title Priority Date Filing Date
EP90401156A Expired - Lifetime EP0395531B1 (en) 1989-04-27 1990-04-27 Mechanism for articulating the elements of a sofa convertible into several positions

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EP (1) EP0395531B1 (en)
JP (1) JPH0368308A (en)
AT (1) ATE99894T1 (en)
DE (2) DE395531T1 (en)
DK (1) DK0395531T3 (en)
ES (1) ES2019252T3 (en)
FR (1) FR2646331B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU209037U1 (en) * 2021-08-19 2022-01-28 Общество с ограниченной ответственностью "ЖИВЫЕ ДИВАНЫ" SPRING LOCK FOR UPHOLSTERED FURNITURE TRANSFORMATION MECHANISM

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2621339A (en) * 1948-03-29 1952-12-16 Murray J Rymland Combined couch and daybed hinge
GB838898A (en) * 1958-04-18 1960-06-22 Arnold Frohwein Improvements in linkages for convertible settees
DE1230978B (en) * 1964-11-26 1966-12-22 Peitz & Co Stanzwerk Fitting for seat and back upholstery frames having sofa beds

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2621339A (en) * 1948-03-29 1952-12-16 Murray J Rymland Combined couch and daybed hinge
GB838898A (en) * 1958-04-18 1960-06-22 Arnold Frohwein Improvements in linkages for convertible settees
DE1230978B (en) * 1964-11-26 1966-12-22 Peitz & Co Stanzwerk Fitting for seat and back upholstery frames having sofa beds

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU209037U1 (en) * 2021-08-19 2022-01-28 Общество с ограниченной ответственностью "ЖИВЫЕ ДИВАНЫ" SPRING LOCK FOR UPHOLSTERED FURNITURE TRANSFORMATION MECHANISM

Also Published As

Publication number Publication date
ES2019252T3 (en) 1994-05-01
DE69005889T2 (en) 1994-08-11
FR2646331B1 (en) 1994-03-11
ES2019252A4 (en) 1991-06-16
JPH0368308A (en) 1991-03-25
EP0395531B1 (en) 1994-01-12
ATE99894T1 (en) 1994-01-15
DK0395531T3 (en) 1994-05-24
FR2646331A1 (en) 1990-11-02
DE395531T1 (en) 1991-04-11
DE69005889D1 (en) 1994-02-24

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