EP2803297A1 - Support device for a seat or bed base - Google Patents

Abstract

A support device (10) for extending between two lugs (1L, 1R) of a bed frame or bed frame for supporting a mattress, said device (10) comprising: a lower section (S1) comprising at least one elongate cross-member (20) longitudinally comprising two ends (22L, 22R) respectively capable of being fixed to the two long pieces (1L, 1R) of the frame, and a medium (O) equidistant from the two ends (22L, 22R); an upper section (S3) comprising a plate (40) adapted to support the mattress; and an intermediate section (52) elastically connecting the lower (S1) and upper (S3) sections to each other by means of a plurality of resilient members (30,30A-30H) which are arranged along the crossbar (20), wherein the longitudinal spacing (d1L) between the first two resilient members (30A, 30B) closest to a first end (22L) of the cross member (20) is greater than the longitudinal spacing (d2L) between first two elastic members (30C, 30D) closest to the middle (O) of the cross member (20).

Description

FIELD OF THE INVENTION

The present disclosure relates to the field of mattress support devices, in particular support devices intended to extend between two long sides of a bed frame or seat (for example, for sofas or armchairs) to support the mattress.

STATE OF THE PRIOR ART

Such devices are already known, which conventionally consist of laths fixed at their ends to the two long sides of the bed frame or seat. Such slats directly support the mattress, over the entire width of the latter, which ensures a continuity of support for the user in the direction of the width of the frame.

Nevertheless, such slatted devices have the disadvantage of flexing and sagging significantly in the central portion of the slats under the weight of the user, when the latter extends in this central portion. This results in a lack of comfort for the user who, once extended in the central part of the slats, is confined in the latter which conforms into a bowl.

To overcome this problem, it is known to replace the laths by studs that occasionally support the mattress. Unfortunately, such point surfaces have the disadvantage compared to slats devices to cause a discontinuity in the user's support in the direction of the width of the frame. This discontinuity is likely to affect the impression of comfort given by this type of suspension device, especially when the user turns and moves in the width direction of the frame.

There is therefore a need for the development of a support device capable of attenuating sagging of conventional slat devices while maintaining a degree of continuity in supporting the mattress in the width of the frame. .

PRESENTATION OF THE INVENTION

• une section inférieure comprenant au moins une traverse longiligne comprenant longitudinalement deux extrémités respectivement aptes à être fixées aux deux longs pans du cadre, et un milieu à équidistance des deux extrémités ;
• une section supérieure comprenant un plateau apte à soutenir le matelas ; et
• une section intermédiaire reliant élastiquement les sections inférieure et supérieure l'une à l'autre à l'aide d'une pluralité d'organes élastiques disposés le long de la traverse,
• dans lequel ladite pluralité comprend au moins trois premiers organes élastiques disposés, chacun, entre une première des deux extrémités et le milieu de la traverse,
• et l'espacement longitudinal entre les deux premiers organes élastiques les plus proches de la première extrémité est plus grand que l'espacement longitudinal entre les deux premiers organes élastiques les plus proches du milieu de la traverse.

A first aspect of the present disclosure relates to a support device for extending between two long sections of a bed frame or seat for supporting a mattress, said device comprising:

• a lower section comprising at least one elongate cross member longitudinally comprising two ends respectively capable of being fixed to the two long sides of the frame, and a medium equidistant from the two ends;
• an upper section comprising a tray adapted to support the mattress; and
• an intermediate section elastically connecting the lower and upper sections to one another by means of a plurality of elastic members arranged along the cross-member,
• wherein said plurality comprises at least three first elastic members each disposed between a first of the two ends and the middle of the cross member,
• and the longitudinal spacing between the two first elastic members closest to the first end is greater than the longitudinal spacing between the first two elastic members closest to the middle of the cross member.

Thus, on a first half of the crossbar, which is delimited between a first of its two ends and its middle, there are at least three first elastic members (it being specified that the middle is an integral part of this first half of the cross member, so one of these at least three first elastic members may, optionally, be placed at the exact location of the middle of the crossbar or withdrawn from this medium, on the side of the first end of the crossbar).

The longitudinal spacing between the two first elastic members (among these at least three first elastic members disposed between the first end and the middle of the crossbar) which are closest to the first end of the cross member is provided greater than the longitudinal spacing between the first two elastic members (among these same at least three first elastic members disposed between the first end and the middle of the cross member).

This longitudinal spacing difference results in a densification of the number of elastic members, when one moves away from the first end and approaches the middle of the crosspiece.

This density of elastic members in the central part of the device can be used to limit the slump of the platform under the weight of the user, and all the more effectively that this density is especially reinforced in this central portion, relative to the vicinity of the first end of the cross, less dense elastic members.

Furthermore, the longitudinal dimensions of the plate, which is elastically supported by the elastic members, can be appropriately selected so as to ensure a certain degree of continuity of the support of the mattress in the width direction of the frame.

In this presentation, is meant by the terms "longitudinal" or "longitudinally", the main direction of elongation of the slender cross, that is to say, the longitudinal direction of the slender cross. This longitudinal direction also corresponds to the spacing direction of the two long sides of the frame, when the device is attached to the frame (this direction is therefore oriented in the direction of the width of the frame, when the two long sides effectively form the two most large sides of the frame). This direction also corresponds to the main direction of elongation of the support device taken as a whole.

Moreover, in the present description, the term "vertical" is intended to denote the direction which is vertical when the device is fixed to the frame. This vertical direction also corresponds to the spacing direction of the upper and lower sections of the device.

Moreover, in the present description, the term "horizontal plane" is intended to denote a plane that is horizontal when the device is attached to the frame. This plane is therefore perpendicular to the vertical direction mentioned above. This plane also contains the longitudinal direction mentioned above.

In addition, in the present description, is meant by the terms "transverse" or "transversely" a direction contained in the horizontal plane and perpendicular to the main direction of elongation of the elongated cross. This direction is therefore a transverse direction relative to the longitudinal direction of this elongate cross. This transverse direction is also perpendicular to the spacing direction of the two long sections of the frame, when the device is attached to the frame. Moreover, this transverse direction corresponds to the direction of elongation of the two long pieces (this direction is therefore oriented in the direction of the length of the frame, when the two long sides actually form the two largest sides of the frame).

In some embodiments, the longitudinal spacing between the two first elastic members closest to the first end may be at least 1.3 times greater than the longitudinal spacing between the first two elastic members closest to the middle of the the crossing.

This lower limit of 1.3 corresponds to a threshold below which it has been observed that the collapse of the central part of the device under the weight of the user is less effectively limited by the support of the elastic members, which are not significantly densified in the vicinity of the central portion of the device relative to the vicinity of the first end of the cross member.

Furthermore, it may be desired to manufacture the device via a limited number of manufacturing steps, so as to simplify the manufacturing process and reduce the cost of manufacture.

Thus, in some embodiments, the first elastic members may be made of the same material, for example the same plastic material.

In addition, in some embodiments, the first elastic members may have identical shapes.

In some embodiments, said plurality may comprise at least three second elastic members each disposed between the second of the two ends and the middle of the cross member, and the longitudinal spacing between the two second elastic members closest to the second end may be larger than the longitudinal spacing between the two second elastic members closest to the middle of the crossmember.

Thus, on a second half of the crossbar, which is delimited between the second of its two ends and its middle, it is possible to have at least three second elastic members (it being specified that the middle is an integral part of this second half of the cross member, so that one of these at least three second elastic members can, optionally, be placed at the exact location of the middle of the cross or withdrawing from this medium, on the side of the second end of the cross).

The longitudinal spacing between the two second elastic members (among these at least three second elastic members disposed between the second end and the middle of the crossbar) which are closest to the second end of the crossbar may be provided greater than the longitudinal spacing between the two second elastic members (among these same at least three second elastic members disposed between the second end and the middle of the cross member).

It is thus possible to obtain the same advantages on the second half of the crossbar as those mentioned above with regard to the first half of the crossbar.

In some embodiments, at least any one of the lower section, the intermediate section, and the upper section of the device (ie, optionally, only one, only two or each of said sections) may have a plane of symmetry. transverse to the cross, which may allow a simplification in the manufacturing process of the device.

By the expression "plane of transverse symmetry" is meant a plane of symmetry which is perpendicular to the longitudinal direction (it is therefore a vertical plane, perpendicular to the spacing direction of the two long sides of the frame , when the device is attached to the frame).

Thus, when at least one of said sections is symmetrical with respect to such a plane of symmetry, it is understood that this at least one section has characteristics on either side of this plane which are symmetrical to each other with respect to this plane. .

In some embodiments, the device may be such that the plane of symmetry passes through the middle of the crossbar.

In some embodiments, the device may further be such that the lower, middle and upper sections are each symmetrical with respect to the plane of symmetry.

In some embodiments, the tray may be in one piece, which can provide an optimal continuity of the support of the mattress in the direction of the width of the frame.

In some embodiments, the tray can be longitudinally disassociated into several distinct sections.

The plate can thus be cut into several distinct sections in the direction of the length (of the main direction of elongation) of the crossbar, the plate being formed by the attachment of these sections on the intermediate part of the device.

Cutting the plate in at least two distinct sections, to position one after the other in the direction of the length of the crossbar, can allow to mount these sections on any type of frame, regardless of the spacing distance of the two long sections of the frame. It thus becomes possible to standardize sections adapted to be mounted on different models of frames with spacing distances of two different long sections.

In some embodiments, a first of said sections may longitudinally connect at least two elastic members among said at least three first resilient members.

Providing a section that is sufficiently long, in the longitudinal direction, to connect together at least two elastic members can ensure a better continuity of the support of the mattress along this longitudinal direction.

In some embodiments, the first of said sections may longitudinally connect at least the first two elastic members closest to the first end.

In some embodiments, the first of said sections may protrude longitudinally, relative to the first elastic members to which said first section is connected, more on the side of the first end of the cross member than on the middle side of the cross member.

This feature can allow the first section to sufficiently exceed the side of the first end so as to cover at least partially the first of the two long sections to which the first end of the cross is fixed. It can thus result in a better comfort and / or overall aesthetics for the device.

In addition, this characteristic can thus allow an overtaking of the first section, in the longitudinal direction and with respect to the first elastic members to which this first section is connected, as short as desired. It is thus possible to provide a longitudinal gap between the first section and the next section which is directly connected to it. adjacent as small as possible, which limits the discontinuity of support of the mattress to the passage from one section to another.

In certain embodiments, a second of said sections may be connected at least to that of the at least three first elastic members which is closest to the middle of the cross member.

This solution can be implemented when the first section is too short, in the longitudinal direction, to attach to all the resilient members located in the first half of the cross, so-called "first elastic members". This configuration can occur when the spacing distance of the two long sections of the frame is particularly important compared to the dimensions of the first section, which it will for example be desired to "standardize" for all models of frames, regardless of the dimensions of these. The presence of this second section can then compensate for the vacuum created by this first too short section.

In some embodiments, the tray may have at least one contact area which is intended to come into contact with the mattress, and which has a relief to minimize contact with the mattress.

Such a relief may thus comprise at least a higher part, on which the mattress can be supported; and a lower part, intended to stay away from the mattress, when the latter bears on the upper part, so as to ensure a better flow of air around the mattress.

In some embodiments, the relief may comprise at least one longitudinal succession of corrugations.

Such a relief may thus be such that, in the longitudinal direction, the upper parts and the lower parts alternately alternate to form a succession of corrugations. This solution can optimize both the continuity of the mattress support and the flow of airflow along the longitudinal direction of the device.

In some embodiments, the relief may comprise transversely several longitudinal successions of corrugations which are longitudinally offset relative to each other.

Such a relief may thus be such that, on a first portion, in the transverse direction, the plate has at least a first longitudinal succession of undulations; and, on a second portion, adjacent to the first portion in the transverse direction, a second longitudinal succession of corrugations whose extrema are offset, in the longitudinal direction, relative to the extrema of the first succession of corrugations.

This solution can optimize both the continuity of the mattress support and the flow of air flows in both longitudinal and transverse directions of the device.

In some embodiments, the longitudinal successions of corrugations may have, each, the same spatial period and be longitudinally offset from each other by half of said spatial period.

Such a relief can thus be such that the minima of the undulations of the first succession coincide, in the longitudinal direction, with the maxima of the undulations of the second succession.

Such a configuration can further optimize the continuity of the support and the flow of air flows by densifying the maximum alternation of high and low parts in both longitudinal and transverse directions of the device.

In some embodiments, the relief may comprise transversely at least three longitudinal successions of corrugations which are longitudinally offset from one another by half the spatial period.

Such a relief may thus be such that the maxima and / or minima of the corrugations of these three longitudinal successions are staggered in the so-called "horizontal" plane which is formed by the longitudinal and transverse directions of the device.

In some embodiments, the tray may include recesses forming areas of material thinning allowing local decreases in tray stiffness.

This configuration can optimize the local deformations plateau to better adapt to the particular positioning of the user on the mattress, while maintaining a good overall continuity of the mattress support.

In some embodiments, the recesses may be formed between the corrugations such that the corrugations are connected together. between them by the thinning areas of material, which can allow optimization of all the aforementioned parameters simultaneously.

In some embodiments, the device may include at least one strap passing through the recesses to be alternately projecting below and above the tray.

Such a protruding strap thus mounted on the plate can thus be used to alternate between first parts of the strap projecting from the upper surface of the plate (and which are thus likely to come into contact with the mattress, when the latter comes to bear on the plate), and the second parts of the strap projecting from the lower surface of the plate (and which are therefore not visible from the upper surface of the plate).

This configuration can improve the overall aesthetics of the plate seen from its upper surface, which can alternate between raw material tray and textile material of the strap.

In addition, this configuration may further allow a better adhesion of the mattress, when the latter comes into support on the plate, at the place of the first parts of textile material.

Furthermore, this configuration may allow adjustment of the overall elasticity and / or local plateau, depending on the degree of tension of the strap relative to the plate.

In some embodiments, the device may comprise at least one elastic body mounted to move on at least one of the elastic members to allow a modification of the stiffness of said elastic member.

A second aspect of this disclosure relates to an assembly comprising a bed frame or seat with two long sides; and a plurality of support devices according to the first aforementioned aspect each extending between the two long sides parallel to each other to support a mattress.

The above-mentioned characteristics and advantages, as well as others, will appear better on reading the detailed description which follows, examples of embodiments which are devoid of any limiting character and which are simply offered for illustration purposes. This detailed description refers to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

• la figure 1 représente une vue en perspective partielle d'un ensemble comprenant un cadre de sommier et une pluralité de dispositifs de support conforme au présent exposé ;
• la figure 2 montre une vue en perspective d'un dispositif de support pris isolément et selon un exemple de réalisation ;
• la figure 3 illustre une vue de dessus du dispositif selon la figure 2 ;
• la figure 4 représente une vue de côté, dans un plan longitudinal, du dispositif selon la figure 2 ;
• la figure 5 montre une vue en perspective d'un premier tronçon de plateau d'un dispositif selon la figure 2 ;
• la figure 6 illustre une vue de dessus du premier tronçon selon la figure 5 ;
• la figure 7 représente une vue en coupe, dans un plan transversal, du premier tronçon selon la figure 5, ladite coupe étant prise au niveau de la partie de fixation du premier tronçon avec un des organes élastiques du dispositif selon la figure 2 ;
• la figure 8 montre une vue en coupe analogue à la figure 7 mais cette fois avec le premier tronçon et ledit un des organes élastiques assemblés ensemble ;
• la figure 9 illustre une vue analogue à la figure 8 mais cette fois en vue de côté, dans un plan transversal du dispositif ;
• la figure 10 représente une vue en perspective du premier tronçon de plateau assemblé avec plusieurs organes élastiques ;
• la figure 11 montre une vue analogue à la figure 10 mais cette fois en vue de côté, dans un plan longitudinal du dispositif ;
• la figure 12A représente, en vue de dessus, une première variante du dispositif illustré à la figure 2 ;
• la figure 12B est une vue analogue à celle de la figure 12A d'un dispositif selon une deuxième variante de réalisation;
• la figure 12C est une vue analogue à celle de la figure 12A d'un dispositif selon une troisième variante de réalisation;
• la figure 13A illustre un tronçon central de plateau, assemblé avec un unique organe élastique, du dispositif illustré aux figures 12A et 12C ;
• la figure 13B illustre un tronçon central de plateau, assemblé avec deux organes élastiques, du dispositif illustré à la figure 2 ;
• la figure 14 montre une vue de dessus, d'un dispositif selon une quatrième variante de réalisation, muni de sangles représentées en couleur sombre pour une meilleure compréhension de la figure ;
• la figure 15 est une vue analogue à celle de la figure 14 mais cette fois prise de côté, dans un plan longitudinal du dispositif ;
• la figure 16 représente une vue de dessus d'un dispositif selon une cinquième variante de réalisation ;
• la figure 17 illustre une vue en coupe, dans un plan longitudinal, du dispositif représenté à la figure 16, qui met en évidence des corps élastiques montés mobiles dans les organes élastiques pour autoriser une modification de la raideur de ces derniers.

The accompanying drawings are diagrammatic and are not to scale, they are primarily intended to illustrate the principles mentioned in this presentation. In these appended drawings:

• the figure 1 is a partial perspective view of an assembly comprising a bed frame and a plurality of support devices according to the present disclosure;
• the figure 2 shows a perspective view of a support device taken in isolation and according to an exemplary embodiment;
• the figure 3 illustrates a top view of the device according to the figure 2 ;
• the figure 4 represents a side view, in a longitudinal plane, of the device according to the figure 2 ;
• the figure 5 shows a perspective view of a first tray section of a device according to the figure 2 ;
• the figure 6 illustrates a top view of the first section according to the figure 5 ;
• the figure 7 represents a sectional view, in a transverse plane, of the first section according to the figure 5 , said section being taken at the attachment portion of the first section with one of the elastic members of the device according to the figure 2 ;
• the figure 8 shows a sectional view similar to the figure 7 but this time with the first section and said one of the elastic members assembled together;
• the figure 9 illustrates a view similar to the figure 8 but this time in side view, in a transverse plane of the device;
• the figure 10 represents a perspective view of the first plateau section assembled with several elastic members;
• the figure 11 shows a similar view to the figure 10 but this time in side view, in a longitudinal plane of the device;
• the figure 12A represents, in top view, a first variant of the device illustrated in FIG. figure 2 ;
• the figure 12B is a view similar to that of the figure 12A a device according to a second embodiment;
• the figure 12C is a view similar to that of the figure 12A a device according to a third embodiment;
• the figure 13A illustrates a central plateau section, assembled with a single elastic member, of the device illustrated in FIGS. Figures 12A and 12C ;
• the Figure 13B illustrates a central plateau section, assembled with two elastic members, of the device illustrated in FIG. figure 2 ;
• the figure 14 shows a top view of a device according to a fourth embodiment, provided with straps represented in dark color for a better understanding of the figure;
• the figure 15 is a view similar to that of the figure 14 but this time taken from the side, in a longitudinal plane of the device;
• the figure 16 represents a top view of a device according to a fifth embodiment variant;
• the figure 17 illustrates a sectional view, in a longitudinal plane, of the device represented in FIG. figure 16 , which highlights elastic bodies movably mounted in the elastic members to allow a change in the stiffness of the latter.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

The figure 1 represents a perspective view of an assembly according to the present disclosure.

In this figure, the assembly comprises a bed frame with two long sides 1L and 1R; and a plurality of support devices 10 each extending between the two long pieces 1L and 1R, parallel to each other to support a mattress (not shown in the drawings).

However, without departing from the scope of this presentation, it would be possible to provide a seating frame instead of a box spring frame.

The support devices 10 each have a main elongation direction called "longitudinal direction" DL. In other words, these devices 10 are each broadly elongate in this longitudinal direction DL.

This longitudinal direction DL corresponds to the spacing direction of the two long sections 1L and 1R, when the devices 10 are fixed to the frame of the bed.

The devices 10 are arranged on the frame so as to be spaced from each other in a spacing direction called "transverse direction" DT.

This transverse direction DT is perpendicular to the longitudinal direction DL, in a horizontal plane, when the devices 10 are fixed to the frame.

This horizontal plane is therefore defined by the transverse directions DT and longitudinal DL. It is perpendicular to a direction called "vertical direction" DV.

The support devices 10 are, in this example, identical to each other, so that only one of these devices will be described in more detail for the sake of brevity of the present disclosure.

As illustrated in Figures 2 to 4 in particular, the support device 10 comprises lower sections S1, intermediate S2 and upper S3 which follow one another in the vertical direction DV, in the downward direction upwards.

The lower section S1 comprises a cross member 20, elongate, rigid, intended to extend between the two long sections 1L, 1R of the frame.

However, without departing from the scope of this disclosure, it would have been possible to provide a lower section comprising at least two sleepers, in particular at least two sleepers spaced apart in the transverse direction DT.

The cross member 20 has a main elongation direction corresponding to the longitudinal direction DL of the device 10.

The cross member 20 comprises successively, in the longitudinal direction DL, a first end 22L adapted to be fixed to a first 1L of the two long sides of the frame; a medium O; and a second end 22R adapted to be fixed to the second 1R of the two long sides of the frame.

The middle O of the cross member is, by definition, located equidistant from the two ends 22L and 22R of the cross member 20, in the longitudinal direction DL.

The two ends 22L and 22R of the crosspiece 20 can be respectively fixed on the two long sections 1L and 1R of the frame by means of any suitable fastening means well known per se, for example one or more pegs (24).

The upper section S3 comprises a plate 40 able to support the mattress.

The intermediate section S2 elastically connects the lower sections S1 and upper S3 to each other by means of a plurality of elastic members 30A-30H which are arranged along the crosspiece 20.

1. (1) dissociés entre eux ;
2. (2) dissociés du plateau 40;
3. (3) dissociés de la traverse 20;
4. (4) constitués d'une même matière, par exemple une matière plastique présentant des propriétés d'élasticité adaptée pour la présente application ;
5. (5) identiques entre eux (de sorte que seul l'un de ces organes élastiques sera décrit en détail, dans un souci de concision du présent exposé).

According to this example, the elastic members 30A-30H are:

1. (1) dissociated from each other;
2. (2) dissociated from the plate 40;
3. (3) dissociated from the cross member 20;
4. (4) made of the same material, for example a plastic material having elastic properties suitable for the present application;
5. (5) identical to each other (so that only one of these elastic members will be described in detail, for the sake of conciseness of this presentation).

However, without departing from the scope of this disclosure, it would be possible to provide elastic members that do not exhibit at least one of the above-mentioned characteristics (1) to (5).

As illustrated on the figure 9 , each elastic member has, at a height H predetermined in the vertical direction DV, an elastically deformable portion 32 in the vertical direction DV, which is able to deform elastically to allow a rapprochement of the lower sections S1 and S3 upper in the vertical direction DV, when a pressure is exerted on the upper section S3, and a distance of said sections S1 and S3, when the device 10 returns to rest, after cessation of such pressure.

According to this example, the elastically deformable portion 32 comprises, in well known manner, a plurality of arcuate portions arranged so as to allow the elastic deformation of the portion 32.

As illustrated in figure 4 , the elastically deformable portion 32 has a predetermined width L along the longitudinal direction DL, adapted to obtain a desired stiffness for the portion 32.

Furthermore, according to this example, the device 10 comprises, on a first longitudinal half M1 defined between the first end 22L and the middle O of the crosspiece 20, four elastic members which, on the figure 4 and in the order of their appearance since the first end 22L and towards the medium O, are referenced 30A, 30B, 30C and 30D. These four elastic members 30A to 30D being arranged on the first half M1, they will be named hereinafter "first" elastic members.

One could however provide, without departing from the scope of this presentation, a device comprising, on the first half M1, another number of elastic members, provided only that it understands at least three on this half M1.

According to this example, the longitudinal spacing d1L between the first two elastic members closest to the first end 22L (it is, on the figure 4 , members 30A and 30B) are larger than the longitudinal spacing d2L between the first two elastic members closest to the medium O (in this figure are members 30C and 30D).

• pour l'espacement d1L : la distance entre un point A, qui se situe au milieu, selon la direction longitudinale DL, de la largeur L de la partie élastiquement déformable 32 de l'organe élastique 30A ; et un point B, qui se situe au milieu, selon la direction longitudinale DL, de la largeur L de la partie élastiquement déformable 32 de l'organe élastique 30B ;
• pour l'espacement d2L : la distance entre un point C, qui se situe au milieu, selon la direction longitudinale DL, de la largeur L de la partie élastiquement déformable 32 de l'organe élastique 30C ; et un point D qui se situe au milieu, selon la direction longitudinale DL, de la largeur L de la partie élastiquement déformable 32 de l'organe élastique 30D.

As illustrated on the figure 4 , a method for determining the spacings d1L and d2L consists in calculating:

• for the spacing d1L: the distance between a point A, which is in the middle, in the longitudinal direction DL, of the width L of the elastically deformable portion 32 of the elastic member 30A; and a point B, which is in the middle, in the longitudinal direction DL, of the width L of the elastically deformable portion 32 of the elastic member 30B;
• for the spacing d2L: the distance between a point C, which is in the middle, in the longitudinal direction DL, of the width L of the elastically deformable portion 32 of the elastic member 30C; and a point D which is in the middle, in the longitudinal direction DL, of the width L of the elastically deformable portion 32 of the elastic member 30D.

According to this example, the longitudinal spacing d1L between the two first elastic members 30A and 30B closest to the first end 22L is at least 1.3 times (especially at least 1.4 times) greater than the longitudinal spacing. d2L between the first two elastic members 30C and 30D closest to the middle O of the cross member 20.

According to this example, the longitudinal spacing d1L between the first two elastic members 30A and 30B closest to the first end 22L is less than 2.0 times (in particular less than 1.6 times) greater than the longitudinal spacing. d2L between the first two elastic members 30C and 30D closest to the middle O of the cross member 20.

Furthermore, according to this example, the device 10 comprises, on a second longitudinal half M2 defined between the second end 22R and the middle O of the cross member 20, four elastic members which, on the figure 4 and in the order of their appearance from the medium O and towards the second end 22R, are referenced 30E, 30F, 30G and 30H. These four elastic members 30E to 30H being arranged on the second half M2, they will be named hereinafter "second" elastic members.

However, without departing from the scope of this disclosure, it would be possible to provide a device comprising, on this second half M2, another number of elastic members.

According to this example, the longitudinal spacing d1R between the two second elastic members closest to the second end 22R (it is, on the figure 4 , members 30G and 30H) is larger than the longitudinal spacing d2R between the two second elastic members closest to the medium O (in this figure are members 30E and 30F).

A method for determining the spacings d1R and d2R is, in this example, identical to that described above with respect to the spacings d1L and d2L.

Moreover, according to this example, the device 10 has a plane of symmetry P transverse to the crosspiece 20. Thus, the plane of symmetry P is perpendicular to the longitudinal direction DL (see Figures 2 to 4 ).

According to this example, the plane of symmetry P passes through the middle O of the crossbar 20.

According to this example, each of the lower sections S1, intermediate S2 and upper S3 are symmetrical with respect to the plane of symmetry P.

However, without departing from the scope of the present description, it would be possible to provide a device in which only one or two of the sections of the lower, intermediate and upper sections are symmetrical with respect to a plane of symmetry perpendicular to the longitudinal direction.

• (6) l'espacement d1R est égal à l'espacement d1L ;
• (7) l'espacement d2R est égal à l'espacement d2L ;
• (8) le nombre de deuxièmes organes élastiques sur la deuxième moitié M2 est égal au nombre de premiers organes élastiques sur la première moitié M1 de la traverse 20.

According to this example:

• (6) the spacing d1R is equal to the spacing d1L;
• (7) the spacing d2R is equal to the spacing d2L;
• (8) the number of second elastic members on the second half M2 is equal to the number of first elastic members on the first half M1 of the cross member 20.

However, without departing from the scope of this disclosure, it would be possible to provide a device that does not exhibit at least one of the above-mentioned characteristics (6) to (8).

Moreover, according to this example, the device 10 has a plane of symmetry Q defined by the vertical directions DV and longitudinal DL. This plane of symmetry Q is perpendicular to the plane of symmetry P and perpendicular to the transverse direction DT.

Moreover, according to this example, the plate 40 is, in the longitudinal direction, dissociated into several distinct sections (ie, dissociated from each other), in particular three distinct sections 42L, 42C and 42R, as is highlighted on FIG. figure 3 .

One could however provide, without departing from the scope of this presentation, a one-piece tray.

In this example, a first 42L of said sections connects together, in the longitudinal direction DL, at least two elastic members among the first elastic members 30A to 30D.

In particular, in this example, this first section 42L connects together, in the longitudinal direction DL, at least the first two elastic members closest to the first end 22L of the cross member 20.

Even more particularly, this first section 42L connects together, in the longitudinal direction DL, the first three elastic members 30A, 30B and 30C closest to the first end 22R of the cross member 20.

In this example, this first section 42L protrudes, in the longitudinal direction, relative to the first elastic members 30A to 30C, to which this first section 42L is connected, more on the side of the first end 22L of the cross member 20 than on the middle side O of the crossbar 20 (see in particular the figure 4 ).

In this example, another 42R of said sections connects together, in the longitudinal direction DL, at least two elastic members among the second elastic members 30E to 30H.

In particular, in this example, this section 42R connects together, in the longitudinal direction DL, at least the two second elastic members closest to the second end 22R of the cross member 20.

Even more particularly, this section 42R connects together, in the longitudinal direction DL, the three second elastic members 30F, 30G and 30H closest to the second end 22R of the cross member 20.

In this example, each of the sections 42L and 42R together connect three elastic members, which can be derogated without departing from the scope of this presentation.

In this example, the sections 42L and 42R are identical to each other, which can be derogated without departing from the scope of this presentation.

In this example, another 42C of said sections is connected at least to that of the first elastic members which is closest to the middle O of the cross member 20 (it is in particular the elastic member 30D).

In particular, according to this example, this section 42C is also connected, in the longitudinal direction DL, to a second elastic member, in particular that of the second elastic members which is closest to the middle O of the cross member 20 (it is particular of the elastic member 30E).

However, without departing from the scope of this disclosure, it would be possible to provide a section 42C connected to one or more elastic members (see, for example, the variants described later in this presentation).

In this example, the plate 20 comprises at least one contact zone which is intended to come into contact with the mattress, and which has a relief to minimize contact with the mattress.

In particular, in this example, this relief is formed on the upper surface of each of the sections 42L, 42C and 42R, which can be derogated without departing from the scope of this presentation.

Furthermore, in this example, the plate 40 has recesses 46 forming areas of thinning material 48 allowing local decreases in the stiffness of the plate 40.

In this example, these recesses 46 are formed on each of the sections 42L, 42R and 42C, which can be derogated without departing from the scope of this presentation.

In this example, the section 42C is similar in characteristics to those of the first section 42L. In addition, as indicated above, in this example, sections 42L and 42R are identical to each other. Therefore, only the first section will be described in more detail, for the sake of brevity of this presentation.

In this example, the relief formed on the upper surface 44 of the first section 42L comprises at least one longitudinal succession of corrugations W1 to W3 (i.e. a succession of corrugations which succeed one another in the longitudinal direction DL).

In particular, in this example, the relief comprises, in the transverse direction DT, several longitudinal successions of corrugations W1 to W3 which are longitudinally offset with respect to each other, in particular three, which can be derogated without departing from the scope of this presentation.

• sur une première portion T1, dans la direction transversale DT, la première succession longitudinale d'ondulations W1 ;
• sur une deuxième portion T2, adjacente à la première portion T1 dans la direction transversale DT, la deuxième succession longitudinale d'ondulations W2 ;
• sur une troisième portion T3, adjacente à la deuxième portion T2 dans la direction transversale DT, du côté opposé à la première portion T1, la troisième succession longitudinale d'ondulations W3 (voir en particulier les figures 5 et 6).

Thus, in this example, the relief is such that it presents:

• on a first portion T1, in the transverse direction DT, the first longitudinal succession of corrugations W1;
• on a second portion T2, adjacent to the first portion T1 in the transverse direction DT, the second longitudinal succession of corrugations W2;
• on a third portion T3, adjacent to the second portion T2 in the transverse direction DT, on the opposite side to the first portion T1, the third longitudinal succession of corrugations W3 (see in particular the Figures 5 and 6 ).

In this example, the longitudinal successions of corrugations W1 to W3 each have the same spatial period TS and are shifted from each other, in the longitudinal direction DL, by half of said spatial period TS.

This configuration allows maxima and minima of the corrugations to be staggered in the horizontal plane defined by the longitudinal directions DL and transverse DT. However, it can be derogated without departing from the scope of this presentation.

Moreover, in this example, the recesses 46 are formed between the corrugations so that the corrugations are interconnected by the material thinning zones 48.

In particular, in this example, the recesses 46 are formed in the recesses formed by the lower parts, in the vertical direction DV, of the corrugations. The material thinning zones 48 correspond, in this example, to the remaining material portions of the recesses thus recessed.

In addition, in this example, recesses 46 form elongate cuts in a main elongation direction which is parallel to the transverse direction DT.

Moreover, as indicated above, in this example, the elastic members 30A-30H are separated from the plate 40; and the elastic members 30A-30H are configured to be assembled and fixed (secured) with the plate 40.

To do this, in this example (see in particular the figures 7 and 8 ), each of the elastic members 30A-30H comprises at least a first fixing portion 34; and the plate 40 (in particular each of the sections 42L, 42C and 42R) comprises a plurality of second fastening portions 50 able to cooperate, each, with one of the first fixing parts 34 to assemble and fix the elastic members 30A-30H with the plate 40.

In this example, the first and second fixing portions are configured to mutually cooperate by clipping effect to assemble and fix the elastic members 30A-30H with the plate 40.

Moreover, as indicated above, in this example, the elastic members 30A-30H are dissociated from the cross member 20; and the resilient members 30A-30H are configured to be assembled and secured (secured) with the cross member 20.

To do this, in this example, each of the elastic members 30A-30H comprises at least a third fixing portion 36 or 36 '; and the crosspiece 20 has a plurality of fourth fastening portions 52 each adapted to cooperate with one of the third fastening portions 36 or 36 'for assembling and securing the elastic members 30A-30H with the cross member 20.

In this example, the third and fourth fixing portions are configured to mutually cooperate according to any effect well known per se in the field of bed frames or seats.

For example, the third attachment portions 36 may form belt portions configured to, in a manner well known per se, surround the cross member 20 to assemble and secure the elastic members 30A-30H with the cross member 20 (see particularly the figures 4 , 8 and 9 ). The periphery of the cross member 20 may in this case directly form the fourth fixing parts mentioned above.

According to another example, the third 36 'and fourth 52 fixing parts can be configured for, in a manner well known per se, to engage one another and lock each other in position by rotation (in particular a rotation quarter turn) to assemble and fix the elastic members 30A-30h with the cross member 20 (see in particular the figure 17 ).

Variations will now be described to the aforementioned embodiment. Only the features detailed below differ from this example. Conversely, all the other characteristics not mentioned below remain unchanged with respect to this exemplary embodiment; they will not be detailed again for the sake of brevity of the present account.

First variant:

In the aforementioned embodiment, it is chosen to mount eight elastic members on the crossmember (four on the first half M1 of the crossmember 20, all recessed from the middle O of the crossmember 20 on the side of its first end 22L, and four others on its second half M2, all set back from the middle O of the crossmember 20 on the side of its second end 22L, see in particular the figure 4 ).

In addition, in the aforementioned embodiment, it is chosen to cut the plate 40 into three sections 42L, 42C and 42R. The section 42L is connected to the three elastic members closest to the first end 22L of the crosspiece 20. The section 42R is connected to the three elastic members closest to the second end 22R of the cross member 20. The central section 42C is connected to the two elastic members closest to the middle O of the cross member 20 (see in particular the Figure 13B ).

On the contrary, according to the first variant described below (see in particular the figures 1 and 12A , it is chosen to mount only seven resilient members on the crossbar 20 (three on the first half M1 of the crossbar 20, all set back from the middle O of the cross member 20 on the side of its first end 22L; three others on its second half M2, all set back from the middle O of the cross 20 on the side of its second end 22L; and a last disposed on the middle O of the cross member (the latter elastic member therefore belongs both to the family of the first elastic members as the second elastic members).

In addition, according to this first variant, it is chosen to cut the plate 40 into three sections 42L, 42C 'and 42R. The section 42L is connected to the three elastic members closest to the first end 22L of the crosspiece 20. The section 42R is connected to the three elastic members closest to the second end 22R of the cross member 20. The central section 42C 'is connected to only the elastic member disposed in the middle O of the cross member 20 (see in particular the figure 13A ).

The choice to vary the number of elastic members on the cross and the arrangement of the sections of the plate can be used, for example but without limitation, when the spacing distance of the two long sections 1L and 1R of the frame varies. from one model to another.

Second variant:

Similarly, according to the second variant described below (see in particular the figure 12B it is chosen to mount only six resilient members on the cross member 20 (three on the first half M1 of the cross member 20, all set back from the middle O of the cross member 20 on the side of its first end 22L, and three others on its second half M2, all set back from the middle O of the cross member 20 on the side of its second end 22L).

In addition, according to this first variant, it is chosen to cut the plate 40 in only two sections 42L and 42R. The section 42L is connected to the three elastic members closest to the first end 22L of the crosspiece 20. The section 42R is connected to the three elastic members closest to the second end 22R of the crosspiece 20.

Third variant:

This third variant is identical to the embodiment described in detail above, with the difference that the single central section 42C of this example is replaced by two smaller sections 42C ', each connected to a single elastic member (see in particular the figure 12C and the figure 13A ).

Fourth variant:

According to this variant, the device 10 further comprises at least one strap (in particular two straps 60 and 60 'in this variant) passing through the recesses 46 of the plate 40 to be alternately projecting below and above the plate (see in particular the Figures 14 and 15 ).

According to this variant, each strap 60 and 60 'is attached to the plate 40 via a loop 62, in a manner well known per se.

Furthermore, according to this variant, each strap 60 and 60 'is alternately projecting below and above the plate in the longitudinal direction DL.

In addition, according to this variant, each strap 60 and 60 'connects together, in the longitudinal direction DL, the various sections of the plate, for example to improve the overall cohesion of the plate and / or improve the continuity of the support of the mattress in the longitudinal direction DL.

Furthermore, according to this variant, the straps 60 and 60 'are spaced from each other in the transverse direction DT.

Fifth variant:

According to this variant, at least one (in particular, each) elastic member is provided with a resilient body 80 mounted to move on said elastic member to allow a modification of the stiffness of said elastic member.

Such a configuration is well known per se. For example and without limitation, one of the solutions described in the European patent application, filed May 23, 2012 under the number 12169155.4 and published on November 28, 2012 under the number EP 2526835 A1 . The content of this European patent application is an integral part of this disclosure and is not further developed in this specification for the sake of brevity.

The modes or examples of embodiment described in the present description are given for illustrative and not limiting, a person skilled in the art can easily, in view of this presentation, modify these modes or embodiments, or consider others, while remaining within the scope of the invention.

In addition, the various features of these modes or embodiments can be used alone or be combined with each other. When combined, these features may be as described above or differently, the invention not being limited to the specific combinations described herein. In particular, unless otherwise specified, a characteristic described in connection with a mode or example of embodiment may be applied in a similar manner to another embodiment or embodiment.

Claims (18)

A support device (10) for extending between two lugs (1L, 1R) of a bed frame or bed frame for supporting a mattress, said device (10) being characterized in that it comprises: a lower section (S1) comprising at least one elongate cross-member (20) longitudinally comprising two ends (22L, 22R) respectively capable of being fixed to the two long pieces (1L, 1R) of the frame, and a medium (O) equidistant from the two ends (22L, 22R); an upper section (S3) comprising a plate (40) adapted to support the mattress; and an intermediate section (S2) elastically connecting the lower (S1) and upper (S3) sections to each other by means of a plurality of elastic members (30A-30H) which are arranged along the crossbar (20), wherein said plurality comprises at least three first resilient members (30A-30D) each disposed between a first (22L) of both ends and the middle (O) of the cross member (20), wherein the longitudinal spacing (d1L) between the two first elastic members (30A, 30B) closest to the first end (22L) is greater than the longitudinal spacing (d2L) between the first two elastic members (30C, 30D) closest to the middle (O) of the cross member (20), wherein the plate (40) is longitudinally disassociated into a plurality of distinct sections (42L, 42R, 42C, 42C '), and wherein a first (42L) of said sections longitudinally connects at least two resilient members (30A-30C) among said at least three first resilient members. Device (10) according to claim 1, wherein the longitudinal spacing (d1L) between the two first elastic members (30A, 30B) closest to the first end (22L) is at least 1.3 times greater than the longitudinal spacing (d2L) between the two first resilient members (30C, 30D) closest to the middle (O) of the cross member (20). Device (10) according to claim 1 or 2, wherein the first elastic members (30A-30D) consist of the same material. Device (10) according to any one of claims 1 to 3, wherein the first resilient members (30A-30D) have identical shapes. Device (10) according to any one of claims 1 to 4, wherein at least any of the sections of the lower section (S1), the intermediate section (S2) and the upper section (S3) of the device (10 ) has a plane of symmetry (P) transverse to the crossbar (20). Device (10) according to claim 5, wherein the lower (S1), intermediate (S2) and upper (S3) sections are, each, symmetrical with respect to the plane of symmetry (P), and in which the plane of symmetry ( P) passes through the middle (O) of the crossbar (20). Device (10) according to any one of claims 1 to 6, wherein the first (42L) of said sections longitudinally connects at least the first two elastic members (30A, 30B) closest to the first end (22L). Device (10) according to claim 7, wherein the first (42L) of said sections protrudes longitudinally, relative to the first elastic members to which said first section is connected, more on the side of the first end (22L) of the cross member (20). than the middle side (O) of the crossbar (20). Device (10) according to any one of claims 1 to 8, wherein a second (42C, 42C ') of said sections is connected at least to that (30D) of the at least three first elastic members which is closest to the middle (O) of the crossbar (20). Device (10) according to any one of claims 1 to 9, wherein the plate (40) comprises at least one contact zone which is intended to come into contact with the mattress, and which has a relief to minimize contact with the mattress. Device (10) according to claim 10, wherein the relief comprises at least one longitudinal succession of corrugations (W1, W2, W3). Device (10) according to claim 11, wherein the relief comprises transversely several longitudinal successions of corrugations (W1, W2, W3) which are longitudinally offset with respect to each other. Device (10) according to claim 12, wherein the longitudinal successions of corrugations (W1, W2, W3) each have the same spatial period (TS) and are longitudinally offset from one another by half of said spatial period (TS). Device (10) according to any one of claims 1 to 13, wherein the plate (40) has recesses (46) forming areas of thinning material (48) allowing local decreases in the stiffness of the plate (40). ). Device (10) according to any one of claims 11 to 13 and claim 14, wherein the recesses (46) are formed between the corrugations (W1, W2, W3) so that the corrugations are interconnected by the areas of material thinning (48). Device (10) according to claim 14 or 15, comprising at least one strap (60, 60 ') passing through the recesses (46) to be alternately projecting below and above the plate (40). Device (10) according to any one of claims 1 to 16, comprising at least one elastic body (80) mounted mobile on at least one of the elastic members (30A-30H) to allow a modification of the stiffness of said elastic member. Set comprising a bed frame or seat with two long sides (1L, 1R); and a plurality of support devices (10) according to any one of claims 1 to 17, which each extend between the two long pieces (1L, 1R), parallel to each other, to support a mattress.

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