The present invention relates to a modular supporting element for harmonized support in a way adaptable to the body of a person or parts thereof, such as, e.g., a mattress, a cushion, a sitting surface of a chair, of an armchair, a saddle for vehicles and the like.
Mattresses and similar supporting elements are known which are composed of a plurality of modular elements, generally identical with each other, assembled so as to make up a mattress, a cushion or another supporting element.
Examples of embodiments of such products are known, e.g., from WO-81/02384, EP-0208130, DE-3724233, EP1854379, EP-0414586, WO-2005/099520, US-2009/0038080. The mattresses or the supporting elements described in these documents generally comprise a supporting base or an element suitable for housing the modular elements and a protective wrapping or a casing for containing all the elements.
The main advantages of such embodiments lie in the smaller overall dimensions, when they are still not assembled, which ensures easier storage, transport and the possibility for the end user to make the mattress or, generally, the above supporting element, independently.
Furthermore, the modular elements making up the supporting elements of known type can be composed of deformable and elastic elements with various characteristics and with various dimensions so as to adapt to various users and also to the different supporting areas of the user, e.g., head, back, legs, etc.
Consequently a mattress, or a supporting element, made from these modular elements, allows adapting the shape of the supporting surface to people's bodies, according to the conformation and specific requirements of the people themselves.
A drawback of the known type embodiments derives from the presence of a continuous upper sheet of material of polyurethane foam, latex, felt type or the like, used to provide, a uniform surface for the mattress, or for the supporting element when this is assembled. Because of this sheet, the localized adaptation which the single modular elements ought to provide is considerably reduced, since the upper continuity of the sheet itself generates a masking effect of the different elastic capacities, of the carrying capacity and of the profile adaptation of the individual modular elements.
In the event of the upper sheet not being present, the modular elements, being at a certain distance from each other, cannot provide a continuous support for the user, creating an unpleasant feeling of discomfort.
To overcome this drawback, the manufacturers make modular elements with a height below that of the mattress, compensating the lower height with a block of foam or another element used as a base.
In the event of the modular elements, of the polyurethane foam type, being completely juxtaposed with each other, as for example in WO-81/02384, the different elastic and profile adaptation capacities of the single modular elements are hindered by the friction generated between one element and another, and after use, the surface on which the user rests becomes irregular.
One object of the present invention is to upgrade the state of the art.
Another object of the present invention is to make a modular supporting element with upgraded elastic, cushioning and more adaptable characteristics.
Another object of the present invention is to make a modular supporting element made up of a plurality of modules with different rigidity from area to area without there being any appreciable influence between one module and another.
Another object of the present invention is to make a modular element made up of modules with height equal to 100% of the thickness of the product as a whole, with the only exception of a possible covering sheet.
Another object of the present invention is to make a modular supporting element with heat adjustment characteristics and upgraded possibilities of transpiration.
Yet another object of the present invention is to develop a modular supporting element that is easy to assemble by the end user.
These and other objects are all achieved by the modular supporting element, according to one or more of the attached claims.
These as well as further advantages will be better understood by any expert in the field from the following description and annexed drawings, given as non-limitative examples, wherein:
a is a perspective view of still another version of the supporting element of
With reference to the illustrations, by 1 is indicated a modular supporting element in its entirety which during the course of the present description shall be exemplified with a mattress, but which can comprise other supporting elements, such as cushions, seating surfaces of a chair, of an armchair, a saddle for vehicles and the like without because of this losing in general details and in any case always within the scope of the present invention.
The modular supporting element 1 according to the present invention comprises a plurality of modules 3, 4, 6, in which each module has at least a side surface and an upper portion 5, and the modules 3, 4, 6 are arranged juxtaposed the one to the other with the side surfaces substantially in contact.
The
According to a non-limitative example, the modules 4 comprise an upper portion 5 made in material of the gel type, and in particular of polyurethane gel. The modules 3 on the other hand can be made of a single elastic material, e.g., a mold or block polyurethane foam, with compression resistance values at 40% preferably included between 0.5−10 kPa and even more preferably included between 1.0−3.5 kPa, such values being measured according to the ISO 3386 standard. In this way, greater savings are obtained while still maintaining excellent characteristics of comfort and/or using this solution in the perimeter areas.
The
The
Further details of the shapes of the upper portions 5 of the modules 6 are shown in the
For example, the mattress 2 can comprise various modules for the different areas of the user's body, i.e., it is possible to have specific modules for the lumbar region, for the leg region, for the torso region, for the head region, etc. Generally speaking, and according to what is described below and illustrated in greater detail in the
For example, such means can be made by means of plates 7, that can be made of plastic material, fabric and the like. The plates 7 also have pegs 8 suitable for fitting in respective housings 9 provided in elements 10 of the base of the modules 3, 4, 6, or other equivalent means such as screws, automatic studs, zip fasteners, hook and loop (e.g., Velcro®), etc. According to what is shown in the
According to what is better shown in the
According to still other versions of the present invention, the modules 3, 4, 6 can remain juxtaposed the one to the other thanks to intrinsically stable geometries of the modular element. It has in fact been determined that the modules with a ratio between base surface and height (S/h) preferably greater than 5, and even more preferably greater than 8, are individually stable and do not need unification means 7 to remain juxtaposed the, one to the other.
By way of a non-limitative example, a number of dimensions are given of intrinsically stable, modules: each module can have a square base with a 16 cm side and 20 cm height, or a square base with a 13 cm side and 10 cm height.
It should be noted that thanks to the flexibility and the thinness of the plates 7, or thanks to the absence of any means of connection between one module and another, the entire mattress 2 has a flexibility such as to also be usable for reclining beds.
An important feature of the present invention is the presence of anti-friction means 11 arranged at least on part of the sides of the modules 3, 4, 6; in some versions the above anti-friction means 11 can be cohesive with the modules, in other versions the anti-friction means 11 are not cohesive with the modules and can form part of the modules themselves or can be comprised in other parts of the supporting element, e.g., they can be included in a module containment hood, or, otherwise, be completely independent.
With reference to what is shown in the
Because some of the anti-friction means 11 forming part of the modules, both in the cohesive version and in the non-cohesive version to the modules, could prevent the flow of air, at least the base of the module 3, 4, 6 must be left free, partially or totally, to allow the free deformation of the module and the flow of air inside the module itself.
The anti-friction means 11 can comprise a film, a fabric, a non-woven fabric, a coating or a material, of the polyurethane (PU) type or ethylene-vinyl acetate (EVA) type, of the self-skin foam type, i.e., plastic foam material that generates a film on its outside surface so as not to determine friction when a module deforms vertically and moves with respect to the adjacent modules. Other anti-friction means can also be obtained with modules comprising thermoplastic materials, silicones, microcellular polyurethanes, which produce slipping between the surfaces of the modules.
In this way, we have the complete freedom of movement of a module with respect to the other adjacent modules, i.e., the elasticity of the material of one module can return the module itself to its initial position, when the compression force is removed, without the presence of the walls of the other modules being able to prevent this action.
Thanks to the anti-friction means, the modules can be arranged juxtaposed the one to the other without any empty intermediate spaces of a specific dimension between one module and the other.
The intermediate empty spaces between one module and the other would otherwise be required in case of modules, for example, made of polyurethane foam, or other material able to create friction, at least in the central parts to prevent contact between the modules during the deformation movement and therefore to prevent friction between the modules.
In fact, in the embodiments of known type, large empty spaces are necessary between one module and another to leave a free, deformation movement for each module, in particular the movement according to the vertical direction of elasticity and deformability of each module. On the other hand, these empty spaces also cause the vertical instability of the modules and/or require the modules to be of lower height with respect to the finished product, i.e., the thickness of the mattress for example.
Furthermore, the presence of empty spaces between one module and another also requires the use of sheet parts for the surface turned towards the user to prevent him/her penetrating the empty spaces, or else it is necessary to adopt modules with low-deformability foam, i.e., rather rigid, and therefore less comfortable for the user. Thanks to anti-friction means, the modules can always therefore be extended along the entire height of the product and can also have different heights and surfaces so as to best optimize the final ergonomics and cater for all the dimensions required by the market.
The
The
The
The modules are placed at a distance T1 from the upper edge (on the left in the illustration) of the supporting element. To obtain the correct position of the modules to support the lumbar region, besides the normal modules 3, 4, 6 of length S, a row of modules is present with dimension L1 located in the upper perimeter area of the supporting element, and a row of modules with dimension L2 located in the lower perimeter area (on the right in the illustration) of the supporting element.
The
In this case, the normal modules 3, 4, 6 of length S are already ready to obtain the row or the rows of modules for lumbar support at the correct distance TN from the upper edge. Finally, the
To obtain the position of the modules for lumbar support at the correct distance T2, besides the normal modules 3, 4, 6 of length 5, there is a row of modules of length L2 placed in the upper perimeter area of the supporting element, and a row of modules of length L1 placed in the lower perimeter area (on the right in the illustration) of the supporting element.
It must be noticed that, according to the examples shown in the
These are simply examples of embodiments of three positions for the lumbar support modules, but naturally a larger number of positions can be obtained with other modules of still different dimensions, to be positioned in the upper perimeter area and lower perimeter area of the mattress.
The modules can naturally have deflections differentiated according to the support they have to provide in each area, and thanks to the anti-friction means the characteristics of each module are not affected by those of the adjacent modules.
For example, for offsetting any measurements of the finished product, i.e., of the mattress, the cushion, etc., the modules 3 of the perimeter areas (
The modules 3, 4, 6 can comprise a summital part 12 and a lower body 13. The modules 3, 4, 6 can have three-dimensional geometries, grooves, etc., and vertical channels 20 connected to the horizontal channels 14 to favor air circulation.
In particular, in the upper part turned towards the user, the horizontal channels 14 are obtained with grooves on the summital part 12 of the modules and/or with a summital part of transversal surface lower than the transversal surface of the lower body 13 (
According to the version shown in the
For example, in the case of a summital part 12 with four sides like that shown in the
Furthermore, according to a further version of the invention not shown here, the modules 3, 4, 6 can comprise two opposite summital parts, i.e., the modules have an upside-down symmetry thereby making it possible to make supporting elements 1 with two opposite surfaces of use.
According to the versions of the invention better shown in the
The lower body 13, as in the case of the module 3 already mentioned above, can comprise a part in mold or block polyurethane foam, with 40% compression resistance values, preferably between 0.5−10 kPa and even more preferably between 1.0−3.5 kPa, such values being measured according to the ISO 3386 standard.
The
In particular, in the module 4, 6 of the
In the module 4, 6 of the
Both the openings 21, and the grooves 23 permit greater, localized, deformability of the body 13 so as to obtain the desired elasticity and carrying-capacity characteristics of the module 4, 6. In the
In a version of the module body not shown here, the spring 32 can also be completely or partially drowned in the material of the body itself.
Thanks to the presence of the spring 32, it is therefore possible to control and regulate the deformability of the body 13 in an even more effective way.
The spring 32 can be of the helical type, or of another shape suitable for having a deformation in an axial direction, e.g., superimposed Belleville washers can be used (not shown). The springs can be made of metal, e.g., music wire, or of other non-metal elastic material, e.g., of composite material such as carbon fibers with epoxy resins, Kevlar™, etc.
The
The honeycomb structure of the upper layer 24 is just one example of open structure suitable for obtaining a control of the elasticity and carrying-capacity characteristics, and naturally other geometries can also be used based on polygonal geometric figures.
The
In these versions too, the cavities 25, 26 permit a greater deformability of the body 13 to obtain the required elasticity and carrying-capacity characteristics of the module 4, 6. In this case too, the modules 4, 6 of the
The above body 13 can also comprise compact or expanded materials of the family of thermoplastic elastomer or TPE type, polyurethane or PU type, ethyl vinyl acetate or EVA type, silicone type and similar materials. The
The
The
The
In general, the modules 3, 4, 6 according to the present invention can attain different degrees of elasticity and/or deformability by means of the use of different foams, with different shapes and sizes and/or with surface geometries and/or different inner recesses or cavities.
In the event of the upper part of the modules being covered as shown in the
The above film, shown in the
By making a monolithic module with particular geometries determined by the mold, the vertical and/or horizontal aeration channels 14, 20 can be obtained which give rise to a high degree of air circulation and consequently to a high degree of climatic comfort, without negatively affecting the ergonomic comfort achieved with area by area modularity.
The invention is easy to transport and assemble and the single elements could also be replaced over time in the event of the user changing the postural layout.
The final structure is determined by the stability which the single modules achieve when they are unified inside a containment hood 17 (
The containment hood 17 is made with the common materials used to manufacture the mattresses, e.g., quilted fabrics, with filling in fiber, or foam, or other filling materials, three-dimensional fabrics, single fabrics, both of a man-made and natural type, the foam and the gel are made with polyurethane and can also contain natural material processing derivates.
The gel can have a density, or weight per unit of volume, between 0.4 and 1.5 g/cm3. The foam and the gel can contain solid additives in granules or fibers, commonly used in the polyurethane field, such as, for example, cork, coconut, hollow or solid plastic or glass balls, or other natural or man-made material processing derivates.
This invention has been described according to preferred embodiments, but equivalent variations can be conceived without exiting from the protection scope offered by the following
Filing Document | Filing Date | Country | Kind | 371c Date |
---|---|---|---|---|
PCT/IB09/53301 | 7/29/2009 | WO | 00 | 2/21/2012 |