FR3054422A1 - SOMMIER STRUCTURE FOR BEDDING - Google Patents

Abstract

The invention relates to a bed base structure for bedding, comprising a suspension device (3) carried by a frame (2) and on which a mattress is intended to rest. The suspension device (3) comprises a plurality of support modules (4) each having two longitudinal edges (41), at least one of which cooperates with the longitudinal edge (41) of a support module (4) adjoining through pivot connecting means (5) defining an axis of rotation (5 ') oriented parallel to the transverse axis (2 ") of the frame (2) The lateral parts (51) of at least one pivot connecting means (5) are carried by sliding surfaces (23) fitted to said frame (2), to impart a degree of freedom in translation to said pivot connection means (5) in a direction (D) oriented parallel to said sliding surfaces (23); ).

Description

Technical field to which the invention relates The present invention relates generally to the field of bedding. It relates more particularly to a bed base structure for bedding, comprising a frame which is associated with a suspension device comprising support modules carried by said frame and on which a mattress is intended to rest.

Technological background

Bed base structures conventionally include:

- a rectangular frame defining a longitudinal axis and a transverse axis, and

- A suspension device carried by said chassis and on which a mattress is intended to rest.

The suspension device generally comprises support modules which consist of slats made of wood, plastic, resin or the like.

These slats are distributed over the length of the longitudinal axis of the chassis; they also extend parallel to each other and also parallel to the transverse axis of this same chassis.

The lateral ends of these slats are carried by lateral support members, generally receiving ends, which are fixed to the support beams of the rectangular frame.

However, in practice, such a box spring structure is not entirely satisfactory.

In particular, the suspension device does not generally provide effective and continuous support for the associated mattress. This is particularly the case for articulated bed bases, in which the suspension device comprises several straight sections connected by hinges creating unsupported spaces for the mattress during lifting.

Object of the invention

In order to remedy the aforementioned drawback of the prior art, the present invention provides a bed base structure for bedding, comprising: a rectangular frame, defining a longitudinal axis and a transverse axis, and 3054422 a suspension device carried by said frame and on which a mattress is intended to rest;

the suspension device comprises several support modules which are distributed along the length of said longitudinal chassis axis and which each extend parallel to said transverse chassis axis.

And according to the invention, said support modules each comprise two longitudinal edges, at least one of which cooperates with the longitudinal edge of an adjoining support module by means of pivot linkage defining an axis of rotation oriented parallel to said transverse axis of frame ; the pivot connection means, connecting two longitudinal edges, each comprise two lateral parts; and the lateral parts of at least one of the pivot connection means are carried by sliding surfaces fitted to said chassis, to confer a degree of freedom in translation to said pivot connection means in a direction oriented parallel to said sliding surfaces.

In this way, the invention gives continuity to the mattress support plane, whether the box spring structure is in a horizontal position or raised.

The sliding on the structure also avoids friction between the suspension device and the mattress.

It should be noted that such a suspension device structure may also be provided on fixed bed bases, in particular in the case where the sliding surfaces of the bed base are adjustable in height.

By “lateral parts” of the pivot connection means is meant both their lateral ends and zones slightly offset from these ends (internal offset), in particular to obtain a lighter aesthetic of the bed base.

Other non-limiting and advantageous characteristics of the box spring structure according to the invention, taken individually or in any technically possible combination, are the following:

the suspension device comprises, on the one hand, central support modules, the two longitudinal edges of which each cooperate with one of the two longitudinal edges of adjoining support modules by means of said pivot connection means and, on the other hand, two terminal support modules, a first of the longitudinal edges of which cooperates with the longitudinal edge of an adjoining support module by means of said pivot connection means and a second of the longitudinal edges of which is free;

- The lateral ends of the longitudinal edge of at least one of said support modules cooperate with pivot connection means which are secured to said chassis, which confer a degree of freedom in rotation to said support module along an axis of rotation parallel to the transverse chassis axis and without degree of freedom in translation parallel to the longitudinal axis of the chassis.

According to a preferred embodiment, the support modules are formed by a set of support members which are juxtaposed and distributed along an axis parallel to the transverse frame axis, which support members each include:

- an upper part, intended to serve as an upper support surface for said mattress,

- a lower part cooperating, by means of pivot connection means, with the lower part of at least one member carrying at least one adjoining support module, and

- An intermediate part, formed between said upper and lower parts of said carrier member, comprising suspension means for said upper part.

According to this preferred embodiment, the upper part of the support members is advantageously in the form of a blade whose longitudinal axis is oriented parallel to the longitudinal axis of the chassis; and the blades of said carrier members extend parallel to each other.

Preferably, still according to this preferred embodiment, the support members of the support modules are arranged in staggered rows; the support members of a support module are partially inserted between a pair of support members belonging to at least one adjoining support module; and the lower part of said carrier member cooperates with the lower part of said at least one pair of adjoining carrier members by means of said pivot connection means.

In this case, the lower part of the supporting members advantageously comprises two tubular portions, forming bearings, arranged parallel and at a distance from each other; and one of the tubular portions of the support members of a support module is aligned coaxially with one of the tubular portions of the support members of an adjoining support module, for the introduction of a rotation shaft forming between them the means pivot link.

Preferably, within each carrier member, the intermediate part comprises flexible blades extending between said tubular portions and said upper part.

Still according to the preferred embodiment, the terminal support modules also advantageously comprise spacer members which are attached between two juxtaposed support members, at their second longitudinal edge (free), and which are locked in rotation with said support members of said module. associated terminal support.

In this context, preferably, the spacer members each comprise:

- an upper part, intended to serve as an upper support surface for said mattress, advantageously in the form of a blade whose longitudinal axis is oriented parallel to the longitudinal chassis axis,

- a lower part, cooperating with the lower part of the pair of juxtaposed carrier members, and

- An intermediate part, formed between said upper and lower parts of said intermediate member, comprising suspension means for said upper part, which lower part of a spacer member comprises a tubular portion which is aligned coaxially with one of the tubular portions of the supporting members juxtaposed for the introduction of a rotation shaft.

According to a first particular embodiment, the chassis comprises a frame comprising two longitudinal members connected by two crosspieces; said longitudinal members comprise, distributed over their length, lateral support members adjustable in height to form the sliding surfaces.

In this case, the reversible receiving parts (lateral support members) have two sides:

a first face, comprising a bearing capable of receiving a lateral end of a longitudinal edge of a support module to give a degree of freedom in rotation to said support module around said longitudinal edge, and

- a second face, forming a sliding surface capable of receiving a lateral part of the connecting means to give it a degree of freedom in translation in a direction parallel to the longitudinal axis of the chassis.

According to a second particular embodiment, the chassis comprises a frame comprising two longitudinal members connected by two crosspieces; said beams comprise several lateral support members which are maneuverable with respect to each other and which carry at least one of said sliding surfaces.

In this case, preferably, the lateral parts of the pivot connection means comprise sliding pads intended to cooperate with the sliding surfaces of the chassis.

The invention also provides a suspension device, intended to be carried by the chassis of a box spring structure and on which a mattress is intended to rest.

This suspension device comprises several support modules which are intended to be distributed along the length of the longitudinal chassis axis and which are intended to each extend parallel to the transverse chassis axis.

The support modules each have two longitudinal edges, at least one of which cooperates with the longitudinal edge of an adjoining support module by means of pivot linkage defining an axis of rotation oriented parallel to said transverse chassis axis; the pivot connection means, connecting two longitudinal edges, each comprise two lateral parts; and the lateral parts of at least one of the pivot connection means are intended to be carried by sliding surfaces fitted to said chassis, to give a degree of freedom in translation to said pivot connection means.

The invention also provides a support member for a box spring structure according to the invention, made in one piece from plastic.

Detailed description of an exemplary embodiment

The description which follows with reference to the accompanying drawings, given by way of nonlimiting examples, will make it clear what the invention consists of and how it can be carried out.

In the accompanying drawings:

- Figure 1 is a schematic view, from the side, of a box spring structure according to the invention, the chassis of which comprises articulated lateral support members which receive the suspension device;

- Figure 2 shows, in an enlarged manner, the detail II of Figure 1;

- Figure 3 is also a partial and enlarged view of the box spring structure according to Figure 1, one of the side support members is moved;

- Figure 4 is a partial and enlarged view of the box spring structure according to Figure 1, with a slight perspective to show the cooperation between the suspension device and the lateral support members of the chassis;

- Figure 5 is an isolated, partially exploded view of the suspension device fitted to the box spring structure according to Figures 1 to 4;

- Figures 6 to 8 are partial and enlarged views, respectively from the side, from above and rear, of the suspension device according to Figure 5;

- Figures 9 and 10 show, in perspective and from the side respectively, one of the support members which is used to form the suspension device according to Figure 5;

- Figures 11 and 12 show, in perspective and from the side respectively, a spacer member which is used to form the terminal support modules of the suspension device according to Figure 5;

- Figure 13 shows, in perspective, a pivot connecting member which is secured to the frame for holding the suspension device in the bed base according to Figure 1;

- Figures 14 and 15 show, from the side and in perspective respectively, a sliding shoe intended to equip one of the lateral parts of the pivot connection means equipping the suspension device in the box spring structure according to Figure 1;

- Figure 16 is a schematic view, from the side, of another box spring structure according to the invention, the chassis of which is of the fixed type;

- Figure 17 shows, in an enlarged manner, a part of the box spring structure according to Figure 16;

- Figures 18 to 20 show, in isolation, one of the lateral support members which equips the box spring structure according to Figures 16 and 17 to form its sliding surfaces.

Figures 1 to 4 show a first bed base structure, of the articulated kind.

This first mattress structure 1 comprises a chassis 2 associated with a suspension device 3.

The chassis 2, of generally rectangular shape, comprises a frame 21 equipped with a base 22.

The frame 21 comprises two longitudinal members 211 connected by two crosspieces 212.

The chassis 2 thus defines two axes at right angles to one another (shown diagrammatically in FIG. 5):

a longitudinal axis 2 ′, extending parallel to the longitudinal members 211 of the frame 21, and

- a transverse axis 2 ", extending parallel to the cross members 212 of the frame 21.

This chassis 2 (and in particular the longitudinal members 211) is equipped with sliding surfaces 23, movable, intended to receive and carry the suspension device 3 (Figures 1 to 3).

The sliding surfaces 23 each have a generally rectangular shape here, each defining a sliding axis 23 ′ (corresponding to the longitudinal axis of this sliding surface 23).

This sliding axis 23 ′ advantageously extends in a vertical plane P, shown diagrammatically in FIG. 3.

The vertical plane P extends parallel to the beams 211 fitted, but also parallel to the longitudinal axis 2 ′ of the chassis 2.

The sliding surfaces 23 are here formed by lateral support members 231, in the form of metal or wooden profiles, which are movable in the above-mentioned vertical plane P.

The lateral support members 231 are themselves carried by maneuvering means 232, for example of the rod-crank type, for maneuvering the sliding surfaces 23.

The suspension device 3, intended to receive a mattress (not shown), is shown in more detail in FIGS. 5 to 8.

This suspension device 3 is carried by the chassis 2, in this case via the sliding surfaces 23.

The suspension device 3 comprises several support modules 4 which are each intended to form a transverse contact strip (oriented parallel to the transverse axis 2 "of the frame 2) suitable for carrying a part of the mattress.

These support modules 4 are distributed over the length of the longitudinal axis 2 'of the chassis 2; and they each extend parallel to the transverse axis 2 "of the chassis 2 (the axes 2 ′ and 2" of the chassis 2 are shown in FIG. 5 for the sake of understanding).

Each support module 4 has two longitudinal edges 41, extending parallel to the transverse axis 2 "of the chassis 2.

Each longitudinal edge 41 has two ends 411 which are intended to come to bear on the lateral support members 231 of the chassis 2 (FIG. 4).

As developed below, the ends 411 have a generally cylindrical shape to cooperate with the lateral support members 231 of the chassis 2.

At least one of these longitudinal edges 41 cooperates with the longitudinal edge 41 of an adjoining support module 4 by means of pivot connection means 5.

The pivot connection means 5 each define an axis of rotation 5 'which is oriented parallel to the transverse axis 2 "of the chassis 2.

The axes of rotation 5 ′ of the suspension device 3 thus extend parallel to each other.

The pivot connection means 5 each comprise two lateral parts 51 (corresponding to the lateral ends 411 of the lateral edges 41) which are intended to rest on the lateral support members 231 of the chassis 2 (FIG. 4).

In this case, the suspension device 3 comprises:

- central support modules 45, the two longitudinal edges 41 of which each cooperate with one of the two longitudinal edges 41 of a support module 4 attached by means of the pivot connection means 5, and

- two terminal support modules 46 (see FIG. 2 in particular), a first of the longitudinal edges 412 of which cooperates with the longitudinal edge 41 of an adjoining support module 4 by means of said pivot connection means 5 and of which a second of the longitudinal edges 413 is free.

The central support modules 45 are here formed by a plurality of support members 7 (also called "main links") which are juxtaposed and distributed along an axis parallel to the transverse axis 2 "of chassis 2.

In particular, the lateral parts 51 of the pivot connection means 5 (corresponding to the lateral ends 411 of the lateral edges 41) are formed by the two carrying members 7 situated at the ends of said support module 4.

One of these support members 7 is shown, in isolation, in FIGS. 9 and 10.

This support member 7, here in the form of a single piece made of plastic, comprises:

- an upper part 71, intended to serve as an upper support surface for the mattress,

a lower part 72 forming a base, which is intended to cooperate, by means of pivot connection means 5, with the lower part 72 of at least one carrying member 7 part of an adjoining support module 4, and

- an intermediate part 73, formed between said upper 71 and lower 72 parts of said carrier member 7, comprising suspension means 731 for said upper part 71.

The upper part 71 is in the form of a blade, having a convex convex shape, the convex shape of which is oriented opposite the lower part 72 (that is to say intended to be oriented towards the mattress) .

The longitudinal axis 71 ’of this upper part 71 is intended to be oriented parallel to the longitudinal axis 2 ′ of chassis 2.

The lower part 72 comprises two tubular portions 721 connected by a crosspiece 722.

The tubular portions 721 are intended to form smooth bearings; they are arranged parallel and at a distance from each other.

These tubular portions 721 define in particular through axes 721 ’which are arranged parallel to one another and which extend perpendicular to the longitudinal axis 71 ′ of the upper part 71.

The suspension means 731 of the intermediate part 73 consist of two flexible blades 731, in the general shape of a V (seen from the side) and opening opposite one another.

These flexible blades 731 have two ends: an upper end 732 connected with the upper part 71 and a lower end 733 connected with one of the tubular portions 721 of the lower part 72.

Each central support module 45 is thus formed of a juxtaposition of support members 7, the lower parts 72 of which are assembled by pivot connection means 5 which also serve to assemble the support members 7 of the two adjoining support modules 4. The supporting members 7 of the two adjoining support modules 4 are arranged alternately along the length of the pivot connection means 5.

The terminal support modules 46 are made up of the same support members 7, between which are inserted spacer modules (also called "end links").

One of these spacer members 10 is illustrated in more detail in FIGS. 11 and 12.

This spacer member 10 comprises:

- an upper part 101, intended to serve as an upper support surface for the mattress,

a lower part 102, intended to cooperate with the lower part 72 of the pair of juxtaposed carrying members 7, and

- an intermediate part 103, formed between said upper 101 and lower 102 parts of said intermediate member 10, comprising suspension means 1031 for said upper part 101.

The upper part 101 is in the form of a blade, having a convex convex shape, the convex shape of which is oriented opposite the lower part 102.

The longitudinal axis 101 ’of this upper part 101 is intended to be oriented parallel to the longitudinal axis 2 ′ of the chassis 2.

The lower part 102 comprises a tubular portion 1021.

The tubular portion 1021 defines in particular a through axis 1021 ’which is arranged perpendicular to the longitudinal axis 101’ of the upper part

101.

This tubular portion 1021 also includes a protruding lug 1022, intended to cooperate with a complementary notch 7211 carried by a tubular portion 721 of a support member 7 juxtaposed laterally (FIG. 8).

This structure allows locking in rotation between this spacer member 10 and the supporting member 7 juxtaposed.

The suspension means 1031 of the intermediate part 103 consist of two flexible blades 1031, in the general shape of a V (seen from the side) and opening opposite one another.

These flexible blades 1031 have two ends (FIG. 12): an upper end 1032 connected with the upper part 101 and a lower end 1033 connected with the tubular portion 1021 forming the lower part

102.

For the manufacture of the suspension device 3, the support members 7 of the support modules 4 are arranged in staggered rows, with their blades 71 extending parallel to each other (Figures 5 and 7).

The support members 7 of a support module 4 are thus partially interposed between a pair of support members 7 belonging to at least one adjoining support module 4.

In particular, a support member 7 of a central support module 45 is partially interposed between two pairs of support members 7 belonging to the two adjoining support modules 4. A carrier member 7 of a terminal support module 46 is in turn partially interposed between a pair of carrier members 7 belonging to an adjoining central support module 45.

For this, the lower part 72 of a carrier member 7 cooperates with the lower part 72 of the pair or pairs of adjoining carrier members 7 by means of the pivot connection means 5.

More specifically, as shown in FIG. 5, the tubular portions 721 of the support members 7 of two adjoining support modules 4 are aligned coaxially, and are juxtaposed alternately.

A rotation shaft 8 is then introduced in translation through this alignment of tubular portions 721 to form between them the pivot connection means 5 (Figure 5).

This rotation shaft 8 has a peripheral contour which, apart from the clearance, corresponds to the interior contour of the tubular portions 721.

Two adjoining support modules 4 are thus able to pivot, one relative to the other, around the axis of rotation 5 ’of the pivot connection means 5.

To form the terminal support modules 46, spacer members 10 are also interposed between two juxtaposed support members 7.

Each spacer member 10 is in particular arranged so that its lower tubular portion 102 is arranged coaxially with a tubular portion

721 of the two supporting members 7 juxtaposed laterally, together forming a longitudinal edge 413 free of a terminal support module 46.

During this mounting, the protruding lug 1022 of the tubular portion 102 of the spacer member 10 is introduced into the complementary notch 7211 carried by the tubular portion 721 of the support member 7 juxtaposed (FIG. 8), so as to obtain the aforementioned rotation lock.

Again, a rotation shaft 8 is introduced in translation through this alignment of tubular portions 721, 102 for their attachment (Figure 5).

To form the bed base structure 1, the lateral parts 51 of the pivot connection means 5 (corresponding to the lateral ends 411 of the longitudinal edges 41 of the support modules 4) are placed on the lateral support members 231 equipping the chassis 2, and carried by those -this.

The two lateral parts 51 of the pivot connection means 5 thus rest on a pair of sliding surfaces 23 facing each other, which allows an amplitude of displacement in translation of said pivot connection means 5 along the length of said associated sliding surfaces 23.

This assembly then gives a degree of freedom in translation to the lateral parts 51 of the pivot connection means 5 formed between two support modules 4, in a direction D oriented parallel to the associated sliding surfaces 23 (FIGS. 3 and 4).

This direction D thus extends further parallel to the sliding axis 23 ′ of the associated sliding surface 23.

To limit the friction forces, the lateral parts 51 of the pivot connection means 5 are fitted with sliding pads 11, attached, intended to cooperate with the sliding surfaces 23 of the chassis 2.

One of these sliding shoes 11 is shown in more detail in FIGS. 14 and 15.

This sliding shoe 11 comprises two parts:

an upper part 111, of generally cylindrical tubular shape, intended to be fitted by fitting onto one of the tubular portions 721 of the support members 7, and

- A lower part 112, comprising a flat surface 1121 intended to come to cooperate with one of the sliding surfaces 23 mentioned above.

The guiding in translation of a lateral part 51 of the pivot connection means 5, along its sliding surface 23, is produced by means of a stirrup (FIG. 4).

Each stirrup 12 is here in the form of an inverted U, comprising a spar terminating in two bracketed brackets which are intended to be fixed to the sliding surface 23 of a lateral support member 231.

Each stirrup 12 encloses here one of the lateral parts 51 of the pivot connection means 5 which is equipped with a sliding pad 11.

In particular, each stirrup 12 has two dimensions:

a height corresponding, apart from play, to the height of a lateral part 51 of the pivot connection means 5, so as to keep the sliding shoe 11 resting on its sliding surface 23, and

- A length greater than the dimension of this lateral part 51 of the pivot connection means 5, so as to allow movement in translation over a determined length.

The lateral ends 411 of the longitudinal edge 41 of at least one of the support modules 4, in this case of the free longitudinal edge 413 of a terminal support module 46, cooperate with pivot connection means 13 which are secured to chassis 2 (Figures 1 and 2).

These pivot connection means 13 thus confer a degree of freedom in rotation to this support module 4 along an axis of rotation 13 ′ parallel to the transverse axis 2 ”of frame 2, but without a degree of freedom in translation parallel to the axis longitudinal 2 'of the chassis 2.

In this case, these pivot connection means 13 are formed by a connection piece 13 which is shown in isolation in FIG. 13.

This pivot connecting piece 13 has two parts:

an upper part 131, in the general shape of C and forming an open smooth bearing, which is intended to receive by fitting one of the tubular portions 721 of the support members 7, and

- a lower part 132, intended to be fixed (for example by means of screws) to one of the lateral support members 231.

In practice, a mattress is placed on the suspension device 3 fitted to the bed base structure 1.

To modify the profile of the mattress, the lateral support members 231 are maneuvered by way of their associated maneuvering means 232.

This movement then causes a deformation of the suspension device 3, which itself generates a rotational maneuver of the support modules 4 relative to each other at their pivot connection means 5.

During these movements, the two lateral parts 51 of the pivot connection means 5 can travel freely along their associated sliding surfaces 23, over a stroke of a limited length (generally at most 5 cm).

The suspension device 3 remains maintained in the optimal position on these sliding surfaces 23, thanks to the pivot connection means 13 and the aforementioned stirrups 12.

The advantage of such an embodiment is to ensure optimal monitoring of the suspension device 3 relative to the chassis 2, during articulation maneuvers of the latter.

The associated mattress thus benefits from optimal support, whatever the configuration of the chassis 2.

Figures 16 and 17 show a second bed base structure, in this case of the genus "fixed".

This second box spring structure 1 again comprises a chassis 2 associated with a suspension device 3.

The chassis 2 is similar to that described above, comprising a frame 21 equipped with a base.

This frame 21 comprises two longitudinal members 211 connected by two crosspieces 212.

The chassis 2 is distinguished in that the sliding surfaces 23 are formed by fixed lateral support members 235 which are distributed over the length of the side members 211 and which are adjustable in height independently of each other.

One of these lateral support members 235 is shown, in isolation in FIGS. 18 to 20.

This reversible lateral support member 235 has two opposite faces:

- A first face 2351, comprising a bearing 2352, open, capable of receiving a lateral end 411 of a longitudinal edge 41 of a support module 4 to confer a degree of freedom in rotation to said support module 4 (without freedom in translation) along an axis of rotation 2352 ', and

- a second face 2353, forming the sliding surface 23 capable of receiving a lateral part 51 of the pivot connection means 5 to give it a degree of freedom in translation in a direction parallel to the longitudinal axis 2 ′ of chassis 2.

The second face 2353 has two raised lateral edges 2354, adapted to constitute a stop limiting the sliding.

This lateral support member 235 also comprises:

- a through hole 2355, for the installation of a fixing member (for example a screw) with the longitudinal member 211 of chassis 2, and

- A lateral face 2356, intended to come opposite the spar 211 of chassis 2, which is provided with two lugs 2357 for locking in position the lateral support member 235 fixed on the spar 211 (Figure 20).

For its part, the frame member 211 2 has several reception areas 215 for the lateral support members 235.

Each reception area 215 comprises several groups of superimposed orifices (for example between 5 and 10), including:

a central orifice 2151, for the reception of the fixing member added through the through orifice 2355, and

- A pair of side holes 2152, for the reception of the above-mentioned pins 2357.

The suspension device 3 is identical to that described above in relation to FIGS. 5 to 8.

In particular, it consists of a set of support members 7 and spacer members 10, to form the support modules 4 connected by pivot connection means 5.

In practice, each pair of opposite lateral support members 235 is adjusted in height, by positioning in one of the groups of orifices 2151,2152 of a reception area 215.

Among these pairs of lateral support members 235, at least one is oriented with its first face 2351 turned upwards, so that their bearings 2352 receive the lateral ends 411 of a longitudinal edge 41 of a support module 4 (on the left in figure 16).

These bearings 2352 then form pivot connection means which are secured to the chassis 2.

These bearings give a degree of freedom in rotation to the support module 4 along an axis of rotation 2352 'which is parallel to the transverse axis 2 "of chassis 2, without any degree of freedom in translation parallel to the longitudinal axis 2' of the chassis 2.

The other pairs of lateral support members 235 are oriented with their second faces 2353 facing upwards, so that the sliding surfaces 23 are in the active position.

The pairs of sliding surfaces 23 then receive two lateral parts 51 of the pivot connection means 5, to give them a degree of freedom in translation in a direction parallel to the longitudinal axis 2 ′ of chassis 2.

The pivot connection means 5 of the suspension device 3 then allow the support modules 4 to effectively match the different pairs of sliding surfaces 23, regardless of the height adjustment.

Claims (10)

1. Bed base structure, comprising: - a rectangular frame (2), defining a longitudinal axis (2 ’) and a transverse axis (2”), and - a suspension device (3) carried by said chassis (2) and on which a mattress is intended to rest, which suspension device (3) comprises several support modules (4) which are distributed along the length of said longitudinal axis (2 ') of chassis (2) and which each extend parallel to said transverse axis (2 ”) of chassis (2), characterized in that said support modules (4) each comprise two longitudinal edges (41), one at less cooperates with the longitudinal edge (41) of a support module (4) attached by means of pivot connection means (5) defining an axis of rotation (5 ') oriented parallel to said transverse axis (2 ”) of chassis ( 2), in that the pivot connection means (5), connecting two longitudinal edges (41), each comprise two lateral parts (51), and in that the lateral parts (51) of at least one of the means pivot link (5) are carried by sliding surfaces (23) equ ipant said frame (2), to confer a degree of freedom in translation to said pivot connection means (5) in a direction (D) oriented parallel to said sliding surfaces (23). 2. Bed base structure according to claim 1, characterized in that the suspension device (3) comprises: - central support modules (45), the two longitudinal edges (41) of which each cooperate with one of the two longitudinal edges (41) of adjoining support modules (4) by means of said pivot connection means (5), and - two terminal support modules (46), a first of the longitudinal edges (412) of which cooperates with the longitudinal edge (41) of a support module (4) attached by means of said pivot connection means (5) and of which a second of the longitudinal edges (413) is free. 3. Bed base structure according to any one of claims 1 or 2, characterized in that the lateral ends (411) of the longitudinal edge (41) of at least one of said support modules (4) cooperate with pivot connection means (13, 2352) which are integral with said chassis (2) and which confer a degree of freedom in rotation to said support module (4) along an axis of rotation (13 ', 2352') parallel to the transverse axis (2 ”) of chassis (2) and without degree of freedom in translation parallel to the longitudinal axis (2j of chassis (2). 4. Bed base structure for bedding according to any one of claims 1 to 3, characterized in that the support modules (4) are formed by a set of support members (7) which are juxtaposed and distributed along a parallel axis to the transverse axis (2 ”) of chassis (2), which support members (7) each include: - an upper part (71), intended to serve as an upper support surface for said mattress, a lower part (72) cooperating, by means of pivot connection means (5), with the lower part (72) of at least one support member (7) of at least one adjoining support module (4), and - An intermediate part (73), formed between said upper (71) and lower (72) parts of said carrier member (7), comprising suspension means (731) for said upper part (71). 5. bed base structure for bedding, according to claim 4, characterized in that the support members (7) of the support modules (4) are arranged in staggered rows, in that the support members (7) of a support module (4 ) are partially inserted between a pair of support members (7) belonging to said at least one adjoining support module (4), and in that the lower part (72) of said support member (7) cooperates with the lower part (72) said at least one pair of adjoining carrier members (7) by means of said pivot connection means (5). 6. Bed base structure for bedding, according to claim 5, characterized in that the lower part (72) of the support members (7) comprises two tubular portions (721), forming bearings, arranged parallel and at a distance from one of the other, and in that one of the tubular portions (721) of the support members (7) of a support module (4) is aligned coaxially with one of the tubular portions (721) of the support members (7) d 'an adjoining support module (4), for the introduction of a rotation shaft (8), forming between them the pivot connection means (5). 7. bed base structure for bedding according to any one of claims 4 to 6 in combination with claim 2, characterized in that the terminal support modules (46) comprise spacer members (10) which are attached between two support members (7) juxtaposed, at their second free longitudinal edge (412), which are locked in rotation with said carrier members (7) of said associated terminal support module (46). 8. bed base structure for bedding according to any one of claims 1 to 7, characterized in that the frame (2) comprises a frame (21) comprising two beams (211) connected by two crosspieces (212), and in that said beams (211) comprise, distributed over their length, lateral support members (235) adjustable in height to form the sliding surfaces (23). 9. bed base structure for bedding according to any one of claims 1 to 7, characterized in that the frame (2) comprises a frame (21) comprising two beams (211) connected by two crosspieces (212), in that that said beams (211) comprise several lateral support members (231) which are maneuverable with respect to each other and which carry at least one of said sliding surfaces (23). 10. Suspension device, intended to be carried by the frame of a box spring structure and on which a mattress is intended to rest, which suspension device (3) comprises several support modules (4) which are intended to be distributed over the length of the longitudinal axis (2 ') of chassis (2) and which are intended to each extend parallel to the transverse axis (2 ”) of chassis (2), characterized in that said support modules (4 ) each have two longitudinal edges (41), at least one of which cooperates with the longitudinal edge (41) of a support module (4) attached by means of pivot connection means (5) defining an axis of rotation (5 ') oriented parallel to said transverse axis (2 ”) of chassis (2), in that the pivot connection means (5), connecting two longitudinal edges (41), each comprise two lateral parts (51), and in that the lateral parts (51) of at least one of the means for pivot link (5) are intended to be carried by sliding surfaces (23) equipping said frame (2), to confer a degree of freedom in translation to said pivot link means (5). 1/7 2/7 Fig. 4 411; 41; 5; 51 3/7 412; 41; 5; 5 '41; 5; 5'; 411 41; 5; 5 ' 4/7