EP0803212B1 - Retractable bed - Google Patents

Retractable bed Download PDF

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Publication number
EP0803212B1
EP0803212B1 EP19970400858 EP97400858A EP0803212B1 EP 0803212 B1 EP0803212 B1 EP 0803212B1 EP 19970400858 EP19970400858 EP 19970400858 EP 97400858 A EP97400858 A EP 97400858A EP 0803212 B1 EP0803212 B1 EP 0803212B1
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EP
European Patent Office
Prior art keywords
frame
bed
pivot
pivots
latches
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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.)
Expired - Lifetime
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EP19970400858
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German (de)
French (fr)
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EP0803212A1 (en
Inventor
Louis André Huet
Michel Jean-Paul Vray
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SLUMBERLAND FRANCE
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Slumberland France
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C17/00Sofas; Couches; Beds
    • A47C17/04Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
    • A47C17/32Changing a single bed into a double bed by extending, pivoting, or tilting a previously hidden second mattress or other bed part

Definitions

  • the Murphy bed presented in this document has the drawback, however, that if the handle unlocking of the locks is activated inadvertently during that the bed is loaded, and in particular when this bed supports a person sitting or lying down, then the bed frame suddenly collapses.
  • the object of the present invention is in particular to overcome these drawbacks.
  • a retractable bed of the genre in question is essentially characterized in that that the locks allow some sliding play to second pivots between the stop portion of said latches and the second stop position of the second pivots, the assistance means being provided to make up for this play by lifting the frame to place the second pivots in their second stop position when the frame is in raised position and the bed not loaded, and said means assistance also being designed to leave the frame lower slightly so that the second pivots abut against the respective stop edges of latches when the frame is in the raised position and the bed supports a predetermined load, and in that the stop edge of each lock has a share a contact area against which the second corresponding pivot when the frame is in raised position and the bed supports said load predetermined, and on the other hand a protruding area which is disposed between the contact area and the cam edge and which protrudes toward the second stop position of the second pivot from the contact area, this protruding area being designed to cooperate with the second pivot in preventing the latch from pivoting to its cleared position when
  • the retractable bed 1 comprises a rigid bed frame 4 of rectangular shape, which extends horizontally and which has the first and second longitudinal sides 5, 6 as well as two transverse sides 7, only one of which is visible on the drawings, this bed frame supporting a mattress 8 ( Figure 1), for example through slats 9 whose ends are fixed respectively to longitudinal sides 5, 6 of the bed frame.
  • the bed frame 4 is supported, in the vicinity of its two transverse sides 7, by two articulated structures of support 10 each comprising two legs 11, 12 which are cross in X and which extend substantially in planes vertical parallel to the transverse sides of the frame, these two legs being connected to each other by a pivot 13 at level of their crossing.
  • this spacer ring 13a maintains for example a gap greater than 2 cm between the legs 11, 12, so as to prevent a user, especially a child, is not injured by displacement in scissor legs 11, 12 when the bed passes from its raised position to its lowered position or vice versa.
  • the two legs 11 belonging respectively to two articulated support structures extend respectively between on the one hand the upper ends which are articulated on fixed pivots 14 integral with the first longitudinal side 5 of the bed frame, and on the other hand lower ends which are connected to each other by a longitudinal cross 15, supported by two of casters 2 and integral with a pedal 16 which extends towards outside the bed.
  • this pedal 16 When the bed is in the lowered position, this pedal 16 has an upper surface which is accessible at the foot of a user and who is at a low height above ground, for example at a lower height 10 cm and preferably less than 5 cm, so only after removing the Murphy bed 1 from its position stowed under the fixed bed 3 by pulling on the outer handle 29, the user can hold the fold-away bed 1 exactly in the desired position while maintaining his foot depressed on pedal 16 while he is raising the foldaway bed in the raised position.
  • the pedal 16 presses lightly on the floor when the bed is in the raised position, without lifting the rollers 2 secured to the cross member 15.
  • the Murphy bed 1 is then immobilized, and on the other hand, the pedal 16 increases the stability of the bed retractable by providing an additional support point.
  • the legs 12 belonging respectively to the two articulated support structures 10 extend respectively on the one hand between upper extremities which are each secured to a pivot 17 which can slide parallel to the transverse sides 7 of the frame bed, and on the other hand the lower ends which are connected to each other by a cross member 18 mounted on two casters 2.
  • each articulated support structure 10 presents a gas spring 23 which, in the example considered, is mounted on the one hand between the aforementioned pivot 14 and on the other hand an additional pivot 24 which is fixed to the corresponding leg 12 between pivot 13 and end lower of said leg 12.
  • the gas struts 23 can act with sufficient leverage to stress effectively the bed frame up by providing some assistance to the user.
  • the latches 25 are in the form of two vertical metal plates which revolve around a axis of rotation 27 on supports 26 integral with the second longitudinal side 6 of the bed frame.
  • latches 25 are connected to each other by a metal conjugation bar 28 which is integral at least one actuation handle.
  • Each of the latches 25 extends longitudinally towards inside the bed frame, from the axis of rotation 27 up to a free end 30, in the immediate vicinity of a side walls of the corresponding yoke 20.
  • a tension spring 31 is mounted between each yoke 20 and the corresponding lock 25, so as to upwardly urge the free end 30 of said lock, thus making this lock cooperate with a portion of the corresponding pivot 17, which protrudes out of the light 19 disposed opposite the lock 25.
  • the lock 25 then remains in permanent contact with the pivot 17 by means of a support finger 33 which axially extends the lower edge of this lock.
  • the lock then maintains the pivot 17 in the vicinity from its second stop position 22, with a certain play of sliding between said second stop position and a stop edge 34 formed at the free end of the lock.
  • This stop edge forms a notch which is oriented towards pivot 17 and which on the one hand has a central contact zone 35 against which comes to bear the pivot 17 when the frame is in the raised position and is loaded, and on the other hand a protruding part 36 which is disposed between the contact area 35 and the upper edge 32 of the lock.
  • the protruding part 36 projects towards the second stop position 22 from the contact zone 35, enough to cooperate with the pivot 17 by preventing the latch 25 to pivot to its erased position when this pivot 17 rests on contact zone 35.

Description

La présente invention est relative aux lits escamotables et en particulier à ceux qui comportent :

  • un cadre de lit rigide, de forme rectangulaire, qui s'étend horizontalement et qui présente des premier et deuxième côtés longitudinaux ainsi que deux côtés transversaux,
  • un ensemble de couchage supporté par le cadre de lit,
  • quatre jambages qui reposent sur des roulettes et qui supportent le cadre de lit en permettant de déplacer ce cadre entre d'une part une position relevée d'utilisation et d'autre part une position abaissée, ces jambages présentant chacun une extrémité supérieure reliée au cadre par un pivot parallèle aux côtés longitudinaux du cadre, deux de ces pivots, dits premiers pivots, étant proches du premier côté longitudinal du cadre et étant montés dans une position fixe par rapport à ce cadre, tandis que les deux autres pivots, dits deuxièmes pivots, sont proches du deuxième côté longitudinal du cadre et sont montés coulissants par rapport à ce cadre parallèlement aux côtés transversaux dudit cadre, chacun des deuxièmes pivots étant déplaçable entre des première et deuxième positions de butée correspondant sensiblement respectivement à la position abaissée et à la position relevée du cadre de lit, les quatre jambages formant deux structures articulées de support qui sont voisines des deux côtés transversaux du cadre et qui comprennent chacune deux desdits jambages se croisant en X, les deux jambages d'une même structure articulée de support étant reliés l'un à l'autre par un pivot au niveau de leur croisement,
  • des moyens d'assistance sollicitant élastiquement le cadre vers sa position relevée,
  • et un mécanisme de verrouillage pour bloquer le cadre en position relevée, ce mécanisme de verrouillage comportant deux verrous qui sont montés pivotants respectivement autour de deux axes de rotation parallèles aux côtés longitudinaux du cadre, ces verrous étant déplaçables entre d'une part une position active où ils coopèrent respectivement avec les deuxièmes pivots, et d'autre part une position effacée où ils n'interfèrent pas avec lesdits deuxièmes pivots, lesdits verrous étant sollicités (élastiquement ou par leur poids) vers leur position active et présentant chacun un bord de came qui coopère avec le deuxième pivot correspondant pour déplacer momentanément le verrou dans sa position effacée lorsque le cadre est déplacé de sa position abaissée à sa position relevée, et chacun des verrous présentant en outre un bord d'arrêt qui coopère avec le deuxième pivot correspondant pour bloquer le cadre dans sa position relevée, les deux verrous étant en outre reliés entre eux par une barre rigide de conjugaison solidaire d'au moins une poignée qui permet de déplacer les deux verrous dans leur position effacée.
The present invention relates to Murphy beds and in particular to those which include:
  • a rigid bed frame, of rectangular shape, which extends horizontally and which has first and second longitudinal sides as well as two transverse sides,
  • a sleeping set supported by the bed frame,
  • four legs which rest on casters and which support the bed frame by allowing this frame to be moved between on the one hand a raised position of use and on the other hand a lowered position, these legs each having an upper end connected to the frame by a pivot parallel to the longitudinal sides of the frame, two of these pivots, called first pivots, being close to the first longitudinal side of the frame and being mounted in a fixed position relative to this frame, while the other two pivots, called second pivots , are close to the second longitudinal side of the frame and are slidably mounted relative to this frame parallel to the transverse sides of said frame, each of the second pivots being movable between first and second stop positions corresponding substantially respectively to the lowered position and to the position raised from the bed frame, the four legs forming two articulated structures of support which are adjacent to the two transverse sides of the frame and which each comprise two of said legs crossing in X, the two legs of the same articulated support structure being connected to each other by a pivot at their crossing ,
  • assistance means elastically biasing the frame towards its raised position,
  • and a locking mechanism for locking the frame in the raised position, this locking mechanism comprising two locks which are pivotally mounted respectively around two axes of rotation parallel to the longitudinal sides of the frame, these locks being movable between on the one hand an active position where they cooperate respectively with the second pivots, and on the other hand a retracted position where they do not interfere with said second pivots, said latches being biased (elastically or by their weight) towards their active position and each having a cam edge which cooperates with the second corresponding pivot to momentarily move the lock in its erased position when the frame is moved from its lowered position to its raised position, and each of the locks furthermore having a stop edge which cooperates with the second corresponding pivot for lock the frame in its raised position, the two locks being further connected to each other by a rigid conjugation bar secured to at least one handle which makes it possible to move the two locks in their retracted position.

Un exemple d'un tel lit escamotable est donné dans le document EP-A-0 359 307.An example of such a Murphy bed is given in EP-A-0 359 307.

Le lit escamotable présenté dans ce document présente toutefois l'inconvénient que, si la poignée de déblocage des verrous est actionnée par inadvertance pendant que le lit est chargé, et notamment lorsque ce lit supporte une personne assise ou allongée, alors le cadre de lit s'affaisse brutalement.The Murphy bed presented in this document has the drawback, however, that if the handle unlocking of the locks is activated inadvertently during that the bed is loaded, and in particular when this bed supports a person sitting or lying down, then the bed frame suddenly collapses.

Il en résulte un désagrément important pour la personne qui se trouve alors sur le lit, ainsi que des risques de blessures pour cette personne ou pour les personnes se trouvant au voisinage du lit.This results in significant inconvenience for the person then lying on the bed, as well as risk of injury to this person or to people in the vicinity of the bed.

La présente invention a notamment pour but de pallier ces inconvénients.The object of the present invention is in particular to overcome these drawbacks.

A cet effet, selon l'invention, un lit escamotable du genre en question est essentiellement caractérisé en ce que les verrous laissent un certain jeu de coulissement aux deuxièmes pivots entre la portion d'arrêt desdits verrous et la deuxième position de butée des deuxièmes pivots, les moyens d'assistance étant prévus pour rattraper ce jeu en soulevant le cadre pour placer les deuxièmes pivots dans leur deuxième position de butée quand le cadre est en position relevé et le lit non chargé, et lesdits moyens d'assistance étant également conçus pour laisser le cadre s'abaisser légèrement de façon que les deuxièmes pivots viennent buter contre les bords d'arrêt respectifs des verrous lorsque le cadre est en position relevée et que le lit supporte une charge prédéterminée, et en ce que le bord d'arrêt de chaque verrou présente d'une part une zone de contact contre laquelle vient s'appuyer le deuxième pivot correspondant lorsque le cadre est en position relevée et que le lit supporte ladite charge prédéterminée, et d'autre part une zone saillante qui est disposée entre la zone de contact et le bord de came et qui fait saillie vers la deuxième position de butée du deuxième pivot à partir de la zone de contact, cette zone saillante étant conçue pour coopérer avec le deuxième pivot en empêchant le verrou de pivoter vers sa position effacée lorsque ledit deuxième pivot s'appuie sur la zone de contact.To this end, according to the invention, a retractable bed of the genre in question is essentially characterized in that that the locks allow some sliding play to second pivots between the stop portion of said latches and the second stop position of the second pivots, the assistance means being provided to make up for this play by lifting the frame to place the second pivots in their second stop position when the frame is in raised position and the bed not loaded, and said means assistance also being designed to leave the frame lower slightly so that the second pivots abut against the respective stop edges of latches when the frame is in the raised position and the bed supports a predetermined load, and in that the stop edge of each lock has a share a contact area against which the second corresponding pivot when the frame is in raised position and the bed supports said load predetermined, and on the other hand a protruding area which is disposed between the contact area and the cam edge and which protrudes toward the second stop position of the second pivot from the contact area, this protruding area being designed to cooperate with the second pivot in preventing the latch from pivoting to its cleared position when said second pivot rests on the area of contact.

Grâce à ces dispositions, les verrous ne peuvent pas être débloqués par inadvertance lorsque le lit est relevé et chargé.Thanks to these provisions, locks cannot be inadvertently released when the bed is raised and charge.

Dans des modes de réalisation préférés, on peut avoir recours en outre à l'une et/ou à l'autre des dispositions suivantes :

  • chaque verrou est sollicité vers sa position active par un ressort ;
  • chaque verrou comporte une surface d'appui qui est en contact avec le deuxième pivot correspondant lorsque le cadre est dans sa position relevée, le deuxième pivot glissant contre cette surface d'appui lorsqu'il se déplace entre sa deuxième position de butée et la portion d'arrêt du verrou, la surface d'appui étant disposée pour maintenir alors la portion d'arrêt du verrou en face du deuxième pivot ;
  • la poignée est disposée à l'extérieur du cadre de lit, cette poignée étant montée pour déplacer les deux verrous vers leur position effacée lorsqu'elle subit un effort dirigé vers le haut ;
  • au moins les jambages dont les pivots sont proches du deuxième côté longitudinal du cadre sont reliés entre eux par une traverse qui est voisine du sol et qui supporte une pédale, cette pédale étant accessible au pied d'un utilisateur lorsque le cadre est dans sa position abaissée ;
  • la pédale est solidaire de la traverse et est disposée pour appuyer sur le sol sans soulever les roulettes lorsque le cadre est dans sa position relevée ;
  • les deux jambages de chaque structure articulée de support sont séparés l'un de l'autre par une bague entretoise au niveau de leur croisement.
In preferred embodiments, recourse may also be had to one and / or the other of the following arrangements:
  • each lock is biased towards its active position by a spring;
  • each latch has a bearing surface which is in contact with the corresponding second pivot when the frame is in its raised position, the second pivot sliding against this bearing surface when it moves between its second stop position and the portion latch stop, the bearing surface being arranged to then hold the latch stop portion opposite the second pivot;
  • the handle is arranged outside the bed frame, this handle being mounted to move the two locks towards their erased position when it is subjected to an upwardly directed force;
  • at least the legs whose pivots are close to the second longitudinal side of the frame are interconnected by a cross member which is close to the ground and which supports a pedal, this pedal being accessible at the foot of a user when the frame is in its position lowered;
  • the pedal is integral with the cross member and is arranged to press on the ground without lifting the rollers when the frame is in its raised position;
  • the two legs of each articulated support structure are separated from each other by a spacer ring at their crossing.

D'autres caractéristiques et avantages de l'invention apparaítront au cours de la description détaillée suivante d'une de ses formes de réalisation, donnée à titre d'exemple non limitatif, en regard des dessins joints.Other characteristics and advantages of the invention will appear during the detailed description following of one of its embodiments, given as non-limiting example, with reference to the accompanying drawings.

Sur les dessins :

  • la figure 1 est une vue en perspective illustrant un lit escamotable selon une forme de réalisation de l'invention, en position abaissée et rangé sous un lit fixe,
  • la figure 2 est une vue similaire à la figure 1, avec le lit escamotable en positon relevée, disposé à côté du lit fixe,
  • les figures 3 et 4 sont des vues en coupe transversale montrant le lit de la figure 1 sans son matelas, respectivement en position abaissée et en position relevée,
  • la figure 5 est une vue de détail de la figure 4,
  • la figure 6 est une vue en coupe selon la ligne VI-VI de la figure 4,
  • et la figure 7 est une vue en coupe selon la ligne VII-VII de la figure 4.
In the drawings:
  • FIG. 1 is a perspective view illustrating a retractable bed according to an embodiment of the invention, in the lowered position and stored under a fixed bed,
  • FIG. 2 is a view similar to FIG. 1, with the retractable bed in the raised position, placed next to the fixed bed,
  • FIGS. 3 and 4 are cross-sectional views showing the bed of FIG. 1 without its mattress, respectively in the lowered position and in the raised position,
  • FIG. 5 is a detailed view of FIG. 4,
  • FIG. 6 is a sectional view along line VI-VI of FIG. 4,
  • and FIG. 7 is a sectional view along line VII-VII of FIG. 4.

Comme représenté sur les figures 1 et 2, l'invention concerne un lit escamotable 1 qui est monté sur quatre roulettes 2 et qui peut prendre sélectivement deux positions, savoir :

  • d'une part une position abaissée permettant par exemple de ranger ce lit escamotable sous un lit fixe 3 (figure 1),
  • et d'autre part une position relevée permettant une utilisation normale dudit lit escamotable (figure 2).
As shown in FIGS. 1 and 2, the invention relates to a retractable bed 1 which is mounted on four casters 2 and which can selectively take two positions, namely:
  • on the one hand, a lowered position making it possible, for example, to store this retractable bed under a fixed bed 3 (FIG. 1),
  • and on the other hand a raised position allowing normal use of said retractable bed (Figure 2).

Comme représenté plus en détail sur les figures 3 et 4, le lit escamotable 1 comprend un cadre de lit rigide 4 de forme rectangulaire, qui s'étend horizontalement et qui présente les premier et deuxième côtés longitudinaux 5, 6 ainsi que deux côtés transversaux 7, dont un seul est visible sur les dessins, ce cadre de lit supportant un matelas 8 (figure 1), par exemple par l'intermédiaire de lattes 9 dont les extrémités sont fixées respectivement aux côtés longitudinaux 5, 6 du cadre de lit.As shown in more detail in Figures 3 and 4, the retractable bed 1 comprises a rigid bed frame 4 of rectangular shape, which extends horizontally and which has the first and second longitudinal sides 5, 6 as well as two transverse sides 7, only one of which is visible on the drawings, this bed frame supporting a mattress 8 (Figure 1), for example through slats 9 whose ends are fixed respectively to longitudinal sides 5, 6 of the bed frame.

Le cadre de lit 4 est supporté, au voisinage de ses deux côtés transversaux 7, par deux structures articulées de support 10 comprenant chacune deux jambages 11, 12 qui se croisent en X et qui s'étendent sensiblement dans des plans verticaux parallèles aux côtés transversaux du cadre, ces deux jambages étant reliés l'un à l'autre par un pivot 13 au niveau de leur croisement.The bed frame 4 is supported, in the vicinity of its two transverse sides 7, by two articulated structures of support 10 each comprising two legs 11, 12 which are cross in X and which extend substantially in planes vertical parallel to the transverse sides of the frame, these two legs being connected to each other by a pivot 13 at level of their crossing.

De plus, comme représenté sur la figure 7, les deux jambages 11, 12 sont séparés l'un de l'autre par une bague entretoise 13a au niveau du pivot 13 : cette bague entretoise 13a maintient par exemple un écart supérieur à 2 cm entre les jambages 11, 12, de façon à éviter qu'un utilisateur, notamment un enfant, ne soit blessé par le déplacement en ciseaux des jambages 11, 12 lorsque le lit passe de sa position relevée à sa position abaissée ou inversement.In addition, as shown in Figure 7, the two legs 11, 12 are separated from each other by a ring spacer 13a at pivot 13: this spacer ring 13a maintains for example a gap greater than 2 cm between the legs 11, 12, so as to prevent a user, especially a child, is not injured by displacement in scissor legs 11, 12 when the bed passes from its raised position to its lowered position or vice versa.

Les deux jambages 11 appartenant respectivement aux deux structures articulées de support s'étendent respectivement entre d'une part des extrémités supérieures qui sont articulées sur des pivots fixes 14 solidaires du premier côté longitudinal 5 du cadre de lit, et d'autre part des extrémités inférieures qui sont reliées l'une à l'autre par une traverse longitudinale 15, supportée par deux des roulettes 2 et solidaire d'une pédale 16 qui s'étend vers l'extérieur du lit.The two legs 11 belonging respectively to two articulated support structures extend respectively between on the one hand the upper ends which are articulated on fixed pivots 14 integral with the first longitudinal side 5 of the bed frame, and on the other hand lower ends which are connected to each other by a longitudinal cross 15, supported by two of casters 2 and integral with a pedal 16 which extends towards outside the bed.

Lorsque le lit est en position abaissée, cette pédale 16 présente une surface supérieure qui est accessible au pied d'un utilisateur et qui se trouve à une faible hauteur au dessus du sol, par exemple à une hauteur inférieure à 10 cm et de préférence inférieure à 5 cm, de sorte qu'après avoir sorti le lit escamotable 1 de sa position rangée sous le lit fixe 3 en tirant sur la poignée extérieure 29, l'utilisateur peut maintenir le lit escamotable 1 exactement dans la position voulue en maintenant son pied appuyé sur la pédale 16, pendant qu'il monte le lit escamotable en position relevée.When the bed is in the lowered position, this pedal 16 has an upper surface which is accessible at the foot of a user and who is at a low height above ground, for example at a lower height 10 cm and preferably less than 5 cm, so only after removing the Murphy bed 1 from its position stowed under the fixed bed 3 by pulling on the outer handle 29, the user can hold the fold-away bed 1 exactly in the desired position while maintaining his foot depressed on pedal 16 while he is raising the foldaway bed in the raised position.

De préférence, la pédale 16 appuie légèrement sur le sol lorsque le lit est en position relevée, sans soulever les roulettes 2 solidaires de la traverse 15. Ainsi, d'une part, le lit escamotable 1 se trouve alors immobiliser, et d'autre part, la pédale 16 augmente la stabilité du lit escamotable en fournissant un point d'appui supplémentaire.Preferably, the pedal 16 presses lightly on the floor when the bed is in the raised position, without lifting the rollers 2 secured to the cross member 15. Thus, from a share, the Murphy bed 1 is then immobilized, and on the other hand, the pedal 16 increases the stability of the bed retractable by providing an additional support point.

Par ailleurs, les jambages 12 appartenant respectivement aux deux structures articulées de support 10 s'étendent respectivement d'une part entre des extrémités supérieures qui sont solidaires chacune d'un pivot 17 pouvant coulisser parallèlement aux côtés transversaux 7 du cadre de lit, et d'autre part des extrémités inférieures qui sont reliées l'une à l'autre par une traverse 18 montée sur deux des roulettes 2.Furthermore, the legs 12 belonging respectively to the two articulated support structures 10 extend respectively on the one hand between upper extremities which are each secured to a pivot 17 which can slide parallel to the transverse sides 7 of the frame bed, and on the other hand the lower ends which are connected to each other by a cross member 18 mounted on two casters 2.

Ces dispositions permettent de déplacer verticalement le cadre de lit 4 entre la position abaissée et la position relevée, en faisant coulisser les pivots 17 dans des lumières 19 qui sont formées respectivement dans les parois latérales de deux chapes 20 solidaires du cadre de lit 4, ces lumières 19 présentant chacune des première et deuxième extrémités 21, 22 qui forment deux positions de butée des pivots 17 correspondant respectivement sensiblement à la position abaissée et à la position relevée du lit.These arrangements make it possible to move vertically the bed frame 4 between the lowered position and the raised position, by sliding the pivots 17 in lights 19 which are formed respectively in the side walls of two yokes 20 integral with the frame of bed 4, these lights 19 having each of the first and second ends 21, 22 which form two positions of abutment of pivots 17 corresponding respectively substantially in the lowered and raised position of the bed.

Par ailleurs, chaque structure articulée de support 10 présente un vérin à gaz 23 qui, dans l'exemple considéré, est monté entre d'une part le pivot 14 susmentionné et d'autre part un pivot supplémentaire 24 qui est fixé au jambage 12 correspondant entre le pivot 13 et l'extrémité inférieure dudit jambage 12.In addition, each articulated support structure 10 presents a gas spring 23 which, in the example considered, is mounted on the one hand between the aforementioned pivot 14 and on the other hand an additional pivot 24 which is fixed to the corresponding leg 12 between pivot 13 and end lower of said leg 12.

Lorsque le lit est en position abaissée, comme représenté sur la figure 3, les vérins à gaz 23 sont pratiquement sans effet, du fait que les pivots 13, 14 et 24 sont alors quasiment alignés.When the bed is in the lowered position, as shown in Figure 3, the gas cylinders 23 are practically ineffective, since pivots 13, 14 and 24 are then almost aligned.

Par contre, dès qu'un utilisateur commence à déplacer le cadre de lit 4 vers le haut, les vérins à gaz 23 peuvent agir avec un bras de levier suffisant pour solliciter efficacement le cadre de lit vers le haut en fournissant une certaine assistance à l'utilisateur.However, as soon as a user starts to move the bed frame 4 upwards, the gas struts 23 can act with sufficient leverage to stress effectively the bed frame up by providing some assistance to the user.

La sollicitation appliquée vers le haut au cadre de lit 4 par les vérins à gaz 23 augmente au fur et à mesure que le lit se rapproche de sa position relevée. En fin de mouvement, cette sollicitation devient suffisante pour maintenir le lit dans sa position relevée et pour maintenir ainsi les pivots 17 dans leur deuxième position de butée, tant que le lit ne supporte aucune charge extérieure.The stress applied upwards to the frame of bed 4 by gas cylinders 23 increases progressively as the bed approaches its raised position. In end of movement, this stress becomes sufficient to keep the bed in its raised position and to maintain thus the pivots 17 in their second stop position, as long as the bed does not support any external load.

Par contre, la sollicitation des vérins à gaz 23 devient insuffisante dès lors que le lit supporte une charge extérieure, de sorte qu'il est nécessaire de prévoir des verrous 25 pour bloquer les pivots 17 au voisinage de leur deuxième position de butée, afin de pouvoir utiliser le lit en position relevée.On the other hand, the use of gas cylinders 23 becomes insufficient as soon as the bed supports a load exterior, so it is necessary to provide latches 25 for locking the pivots 17 in the vicinity of their second stop position, in order to use the bed in the raised position.

Comme représenté plus en détail sur les figures 5 et 6, les verrous 25 se présentent sous la forme de deux plaques métalliques verticales qui tourillonnent autour d'un axe de rotation 27 sur des supports 26 solidaires du deuxième côté longitudinal 6 du cadre de lit.As shown in more detail in Figures 5 and 6, the latches 25 are in the form of two vertical metal plates which revolve around a axis of rotation 27 on supports 26 integral with the second longitudinal side 6 of the bed frame.

Ces deux verrous 25 sont reliés l'un à l'autre par une barre de conjugaison métallique 28 qui est solidaire d'au moins une poignée d'actionnement.These two latches 25 are connected to each other by a metal conjugation bar 28 which is integral at least one actuation handle.

Chacun des verrous 25 s'étend longitudinalement vers l'intérieur du cadre de lit, depuis l'axe de rotation 27 jusqu'à une extrémité libre 30, au voisinage immédiat d'une des parois latérales de la chape 20 correspondante.Each of the latches 25 extends longitudinally towards inside the bed frame, from the axis of rotation 27 up to a free end 30, in the immediate vicinity of a side walls of the corresponding yoke 20.

De plus, un ressort de traction 31 est monté entre chaque chape 20 et le verrou 25 correspondant, de façon à solliciter vers le haut l'extrémité libre 30 dudit verrou, en faisant ainsi coopérer ce verrou avec une portion du pivot 17 correspondant, qui fait saillie hors de la lumière 19 disposée en regard du verrou 25.In addition, a tension spring 31 is mounted between each yoke 20 and the corresponding lock 25, so as to upwardly urge the free end 30 of said lock, thus making this lock cooperate with a portion of the corresponding pivot 17, which protrudes out of the light 19 disposed opposite the lock 25.

Lorsque le lit est dans la position abaissée, comme représenté sur la figure 3, c'est le bord rectiligne supérieur 32 du verrou 25 qui coopère avec le pivot 17.When the bed is in the lowered position, as shown in Figure 3, this is the straight edge upper 32 of the lock 25 which cooperates with the pivot 17.

A partir de cette position, lorsqu'un utilisateur veut relever le lit, il déplace le cadre de lit 4 vers le haut soit en tirant vers le haut au moyen de la poignée 29, auquel cas les verrous 25 sont déplacés par cette poignée dans une position où ils n'interfèrent pas avec les pivots 17, soit en agissant uniquement sur le cadre de lit 4, auquel cas les bords supérieurs 32 des verrous 25 agissent comme des surfaces de came pour faire pivoter vers le bas ces verrous, de façon à permettre le coulissement des pivots 17 depuis leur première position de butée jusqu'à leur deuxième position de butée.From this position, when a user wants to raise the bed, he moves the bed frame 4 towards the high either by pulling upwards by means of the handle 29, in which case the latches 25 are moved by this handle in a position where they do not interfere with the pivots 17, either by acting only on the bed frame 4, in which case the upper edges 32 of the latches 25 act like cam surfaces to rotate down these latches, so as to allow the pivots to slide 17 from their first stop position to their second stop position.

Lorsque le lit arrive dans sa position relevée, comme représenté sur les figures 4 et 5, les pivots 17 arrivent au-delà de l'extrémité du bord rectiligne supérieur 32 du verrou 25, de sorte que ce verrou peut pivoter à nouveau vers le haut sous l'effet du ressort 31.When the bed reaches its raised position, as shown in Figures 4 and 5, the pivots 17 reach beyond the end of the upper straight edge 32 of latch 25, so that this latch can pivot again upwards under the effect of spring 31.

Le verrou 25 reste alors en contact permanent avec le pivot 17 par l'intermédiaire d'un doigt d'appui 33 qui prolonge axialement le bord inférieur de ce verrou. The lock 25 then remains in permanent contact with the pivot 17 by means of a support finger 33 which axially extends the lower edge of this lock.

Le verrou maintient alors le pivot 17 au voisinage de sa deuxième position de butée 22, avec un certain jeu de coulissement entre ladite deuxième position de butée et un bord d'arrêt 34 formé à l'extrémité libre du verrou.The lock then maintains the pivot 17 in the vicinity from its second stop position 22, with a certain play of sliding between said second stop position and a stop edge 34 formed at the free end of the lock.

Ce bord d'arrêt forme une échancrure qui est orientée vers le pivot 17 et qui présente d'une part une zone centrale de contact 35 contre laquelle vient s'appuyer le pivot 17 lorsque le cadre est en position relevée et est chargé, et d'autre part une partie saillante 36 qui est disposée entre la zone de contact 35 et le bord supérieur 32 du verrou.This stop edge forms a notch which is oriented towards pivot 17 and which on the one hand has a central contact zone 35 against which comes to bear the pivot 17 when the frame is in the raised position and is loaded, and on the other hand a protruding part 36 which is disposed between the contact area 35 and the upper edge 32 of the lock.

La partie saillante 36 fait saillie vers la deuxième position de butée 22 à partir de la zone de contact 35, suffisamment pour coopérer avec le pivot 17 en empêchant le verrou 25 de pivoter vers sa position effacée lorsque ce pivot 17 s'appuie sur la zone de contact 35.The protruding part 36 projects towards the second stop position 22 from the contact zone 35, enough to cooperate with the pivot 17 by preventing the latch 25 to pivot to its erased position when this pivot 17 rests on contact zone 35.

Grâce à cette disposition, lorsque le lit est en position relevée et non chargé, il est possible de déplacer les verrous 25 dans leur position effacée en actionnant la poignée 29, puis de faire passer le lit dans sa position abaissée en appuyant sur le matelas 8.Thanks to this arrangement, when the bed is in raised position and not loaded, it is possible to move the latches 25 in their erased position by actuating the handle 29, then move the bed to its position lowered by pressing the mattress 8.

Par contre, tant que le lit est en position relevée et qu'il est chargé, les pivots 17 s'appliquent contre les zones de contact 35 des bords d'arrêt 34 correspondants des verrous 25, et les parties saillantes 35 de ces bords d'arrêt empêchent tout pivotement des verrous 25 vers leur position effacée.However, as long as the bed is in the raised position and that it is loaded, the pivots 17 are applied against the contact zones 35 corresponding stop edges 34 of latches 25, and the protrusions 35 of these edges stop the locks 25 from pivoting towards their position cleared.

Claims (7)

  1. Retractable bed comprising:
    a rigid bed frame (4), of rectangular shape, that extends horizontally and has a first and a second longitudinal sides (5, 6) and two transverse sides (7),
    bedding (8) supported by the bed frame,
    four legs (11, 12) that rest on wheels (2) and support the bed frame while allowing the frame to be moved between a raised position of use on the one hand, and a lowered position on the other, these legs each having an upper end connected to the frame by a pivot (14, 17) parallel to the longitudinal sides of the frame, two of these pivots, termed the first pivots (14), being close to the first longitudinal side (5) of the frame and being mounted in a fixed position relative to this frame, while the other two pivots, termed the second pivots (17), are close to the second longitudinal side (6) of the frame and are able to slide relative to this frame parallel to the transverse sides (7) of the said frame, each of the two pivots (17) being movable between first and second stop positions (21, 22) corresponding essentially to the lowered position and raised position, respectively, of the bed frame, the four legs forming two articulated support structures (11) that are close to the two transverse sides of the frame and that each include two of the said legs intersecting to form an X, and the two legs of each articulated support structure being connected to each other by a pivot (13) where they intersect,
    means of assistance (23) that elastically urge the frame towards its raised position,
    and a locking mechanism for locking the frame in the raised position, this locking mechanism comprising two latches (25) that each pivot about a respective axis of rotation parallel to the longitudinal sides (5, 6) of the frame, these latches being movable between, on the one hand, an active position in which they each engage with the respective second pivot (17), and, on the other hand, a withdrawn position in which they do not interfere with the said second pivots, the said latches being urged towards their active position and each having a cam edge (32) that is acted upon by the corresponding second pivot (17) to move the latch temporarily to its withdrawn position when the frame is being moved from its lowered position to its raised position, and each of the latches also has a stop edge (34) that engages with the corresponding second pivot to lock the frame in its raised position, the two latches also being connected to each other by a rigid connecting bar (28) integral with at least one handle (29) by which both latches (25) can be moved into their withdrawn position,
    characterized in that the latches (25) leave a certain amount of sliding play for the second pivots (17) between the stop portion (34) of the said latches and the second limit position (22) of the second pivots, the means of assistance (23) being designed to close this play by lifting the frame (4) to place the second pivots (17) in their second limit position when the frame is in the raised position and the bed not loaded, and the said means of assistance also being designed to allow the frame to drop slightly in such a way that the second pivots (17) abut against the respective stop edges (34) of the latches when the frame is in the raised position and the bed supporting a predetermined load,
    and in that the stop edge (34) of each latch has on the one hand a contact portion (35) against which the corresponding second pivot (17) presses when the frame is in the raised position and the bed supporting the said predetermined load, and on the other hand a projecting portion (36) which is located between the contact portion (35) and the cam edge (32) and which projects towards the second limit position (22) of the second pivot from the contact portion, this projecting portion being designed to act on the second pivot (17) and prevent the latch (25) from pivoting towards its withdrawn position when the said second pivot is pressing on the contact portion.
  2. Bed according to Claim 1, in which each latch (25) is urged towards its active position by a spring (31).
  3. Bed according to either of Claims 1 and 2, in which each latch (25) comprises a bearing surface (33) which is in contact with the corresponding second pivot (17) when the frame (4) is in its raised position, the second pivot sliding against this bearing surface as it moves between its second limit position (22) and the stop portion (34) of the latch, the bearing surface being arranged so that it then keeps the stop portion of the latch facing the second pivot.
  4. Bed according to any one of the preceding claims, in which the handle (29) is located outside of the bed frame (4), the handle being mounted so as to move both latches (25) towards their withdrawn position when an upward force is applied to it.
  5. Bed according to any one of the preceding claims, in which, as a minimum, the legs (11) whose pivots (14) are close to the second longitudinal side of the frame are connected to each other by a crossmember (15) which is close to the floor and supports a pedal (16), this pedal being accessible to the foot of a user when the frame is in its lowered position.
  6. Bed according to Claim 5, in which the pedal (16) is integral with the crossmember (15) and is located so as to rest on the floor without lifting the wheels (2) when the frame (4) is in its raised position.
  7. Bed according to any one of the preceding claims, in which the two legs (11, 12) of each articulated support structure (10) are separated from each other by a spacer ring (13a) at the point where they intersect.
EP19970400858 1996-04-18 1997-04-16 Retractable bed Expired - Lifetime EP0803212B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9604867A FR2747544B1 (en) 1996-04-18 1996-04-18 MURPHY BED
FR9604867 1996-04-18

Publications (2)

Publication Number Publication Date
EP0803212A1 EP0803212A1 (en) 1997-10-29
EP0803212B1 true EP0803212B1 (en) 2001-12-12

Family

ID=9491338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970400858 Expired - Lifetime EP0803212B1 (en) 1996-04-18 1997-04-16 Retractable bed

Country Status (3)

Country Link
EP (1) EP0803212B1 (en)
DE (1) DE69708962D1 (en)
FR (1) FR2747544B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11134787B2 (en) 2018-05-16 2021-10-05 Bestar Inc. Anti-shearing and anti-crushing device on a retractable bed

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112043108B (en) * 2020-09-14 2022-06-07 青岛枫泰木业有限公司 Wood bed convenient to store

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2623218A (en) * 1949-06-17 1952-12-30 Englander Co Inc Convertible couch bed
US3855650A (en) * 1973-07-30 1974-12-24 Gem Industries High rise studio couch or bed
IT1227343B (en) * 1988-09-13 1991-04-08 Flou Spa SUPPORTING STRUCTURE FOR SOFA BED, WITH EXTRACTABLE AND ELEVABLE AUXILIARY BED.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11134787B2 (en) 2018-05-16 2021-10-05 Bestar Inc. Anti-shearing and anti-crushing device on a retractable bed

Also Published As

Publication number Publication date
EP0803212A1 (en) 1997-10-29
FR2747544A1 (en) 1997-10-24
DE69708962D1 (en) 2002-01-24
FR2747544B1 (en) 1998-07-03

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