Abstract:
Springing construction for making mattresses where a plurality of resilient modular elements having a central coupling body for coupling to locating bars are extended substantially parallel to the lying plane of the mattress and the central coupling body is associated with a central springing element that adjoins, on opposite sides of the locating bars lying plane, springing side elements, and the modular elements are resiliently yieldable along a direction that is substantially perpendicular to the mattress lying plane.

Description:
BACKGROUND OF THE INVENTION 
     The present invention relates to a springing or suspension construction for making mattresses and the like. 
     As is known, springing or suspension constructions conventionally used for making paddings and mattresses are usually made starting from spring elements which, in their most evolved patterns, provide to use independent bagged-in springs, made of a metal material, and, in particular, of a piano steel and the like. 
     Such a pattern allows to provide an anatomically proper lying for a user, even from a moisture standpoint, since, because of a bellow sort of effect, a good air exchange is achieved. 
     However, the above mentioned approach has the drawback that the inner structure of the springs is made of a steel material, thereby providing an electromagnetic wave receiving and reflecting mass, affected by a comparatively high amount of electromagnetical waves generated by TV sets cellular phones, computers, telecontrol devices, high voltage apparatus, radars, artificial satellites and so on, as well as other electric apparatus. 
     In such a condition, the human body, in particular during a rest period thereof, is immersed in an environment which is objectable from a health standpoint. 
     SUMMARY OF THE INVENTION 
     Accordingly, the aim of the present invention is to overcome the above mentioned problem, by providing a springing or suspension construction, in particular for making mattresses and the like, allowing to nearly fully eliminate any metal element, thereby overcoming the above mentioned negative effects related to the electromagnetic wave reception and reflection. 
     Within the scope of the above mentioned aim, a main object of the invention is to provide such a springing or suspension construction, specifically designed for making mattresses and the like, which allows to use an independent springing at several regions of the mattress, while preserving all the positive features of the bagged-in spring elements, without having their drawbacks. 
     Another object of the present invention is to provide such a springing or suspension construction which, owing to its peculiar designing features, is very reliable and safe in operation. 
     Yet another object of the present invention is to provide such a springing construction, for making mattresses and the like, which can be easily made and which, moreover, is very competitive from a mere economic standpoint. 
     According to one aspect of the present invention, the above mentioned aim and objects, as well as yet other objects, which will become more apparent hereinafter, are achieved by a springing construction for making mattresses and the like, characterized in that said springing construction comprises a plurality of resilient modular elements, having a central coupling body for coupling to locating bars which extends substantially parallel to a mattress lying plane, said central body being associated with a central springing element adjoining, on opposite sides of the locating bars lying plane, springing side elements, said modular elements being resiliently yieldable along a direction substantially perpendicular to the mattress lying plane. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Further characteristics and advantages of the present invention will become more apparent hereinafter from the following detailed disclosure of a preferred, though not exclusive, embodiment of a springing construction, specifically designed for making mattresses and the like, which is illustrated, by way of an indicative, but not limitative, example in the accompanying drawings, where: 
         FIG. 1  is a schematic perspective view showing a resiliently yieldable or yielding modular element; 
         FIG. 2  is a further schematic perspective view showing a plurality of modular elements as assembled with one another; 
         FIG. 3  is a further exploded perspective view showing a detail of a mattress; 
         FIG. 4  is a further perspective, partially broken away view, showing a detail of a mattress; 
         FIG. 5  is a schematic top plan view showing the subject mattress; 
         FIG. 6  shows the subject mattress, as cross-sectioned along a longitudinal plane perpendicular to the mattress lying plane; 
         FIG. 7  is an elevation view showing a resiliently yielding resilient modular element according to a further aspect of the invention, having sleeve elements including a quadrangular cross-section; 
         FIG. 8  is yet another exploded perspective view showing the resiliently yieldable or yielding modular element of  FIG. 7 , and a locating bar with a spot fixation system; 
         FIG. 9  is a view similar to  FIG. 8 , but showing the locating bar associated with the resilient modular element; 
         FIG. 10  is a further exploded perspective view showing the resilient modular element of  FIG. 9  and a locating bar with a fixed-joint type or of attachment system; 
         FIG. 11  is a schematic view similar to  FIG. 10 , but showing the locating bar associated with the resilient modular element; 
         FIG. 12  is a further schematic perspective view showing a plurality of modular elements of the type shown in  FIG. 7 , and assembled with one another; 
         FIG. 13  is a further exploded perspective view showing a detail of a mattress including a plurality of modular elements of the type shown in  FIG. 7 ; and 
         FIG. 14  shows the mattress of  FIG. 13 , as cross-sectioned along a longitudinal cross-section plane perpendicular to the lying plane of the mattress. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     With reference to the number references of the above mentioned figures, the springing or suspension construction, specifically designed for making mattresses and the like, which has been generally indicated by the reference number  1 , comprises a plurality of resilient or resiliently yieldable or yielding modular elements  2 , which are made of a plastics material and, in particular, of a resilient plastics material such as polyurethane, hytrel and the like. 
     Each said modular element  2 , as shown in  FIG. 1 , has a central coupling body  3 , made of a central sheet element  4  ending with a pair of projecting sleeve elements  5 , thereby operating as a spacer. 
     Said sleeve elements  5 , in particular, are designed to receive therein locating bars  6 , lying in a plane parallel to the mattress lying plane and being arranged substantially transversally of the longitudinal extension of the mattress. 
     Said bars  6 , having end plug elements  7 , are threaded into the sleeve elements  5 , thereby allowing the resilient modular elements to be coupled so as to practically provide a quincuncial pattern. 
     To said central body  3  is coupled a central springing element  10  which, advantageously, is patterned as an elongated eight element, with the central portion  11  rigid with the sheet element and with closed portions encompassing the sleeve members  5  thereby being spaced from the latter. 
     A plurality of springing side elements, generally indicated by the reference number  20 , are arranged in an adjoining relationship with the central springing element, said side springing elements also having an elongated- 8  pattern, and being arranged on opposite sides of the plane defined by the coupling bars  6 . 
     More specifically, said side springing elements have flat portions  21 , on their outer parts, defining a broad glueing flat zone, for glueing, by a glue layer  30 , conventional padding and coating layers, which have been generally indicated in the drawings by the reference number  31 , and are made for completing the mattress inside the closure sheath  32  thereof. 
     At the perimetrical regions of the mattress  40  are moreover provided perimetrical blocks  41 , made of a foamed plastics material, such as foamed polyurethane, latex foam and the like, defining the mattress contour and providing a finishing pattern for the springing construction housing region. 
       FIGS. 7 to 14  show further embodiments of the invention, in which the subject springing construction comprises a plurality of resilient modular elements  102  having a modified pattern from the modular elements  2  as thereinabove disclosed, but still made of a plastics material and, in particular, of a resilient thermoplastics material such as polyurethane, hytrel and the like. 
     As shown in  FIG. 7 , each said modular element  102  comprises a central coupling body  103 , constituted by a central sheet element  104  ending with a pair of sleeve elements  105  having a quadrangular cross-section and substantially the same width as the modular element body. 
     Locating bars  106  are housed in said sleeve elements  105 , said locating bars lying in a plane which is substantially parallel to the mattress lying plane and being arranged substantially transversely of the longitudinal extension of the mattress. 
     In the embodiment shown in  FIGS. 8 and 9 , said locating bars  106  are engaged in said sleeve elements  105  through an interposition of quadrangular bushings  107 , having a cross section which is substantially equal to the sleeve element cross section, and being used for applying attachment or fixing-clamping means for said locating bars, preferably comprising a plurality of fixing spots  109  or other suitable fixing elements. 
     According to a further embodiment, shown in  FIGS. 10 and 11 , the connection system for coupling the modular elements comprises connection small rods  206  having a cross-section which substantially corresponds to a half of the sleeve element  105  cross section, thereby allowing the end portions of two rods  206  to be easily engaged in said sleeve elements. 
     In particular, said rods  206  have enlarged end portions  209  which can be resiliently deformed through a notch, thereby allowing the engaging of said rods into said sleeve elements  105 , while preventing the rods from being disengaged or unthreaded from the latter. 
     The modular element  102  comprises moreover a central springing element  110 , coupled to the central body  103  and which has advantageously an elongated-8 pattern, with the central portion  111  being integral or rigid with the sheet element  104  and with closed portions encompassing the sleeve elements  105 , while being properly spaced therefrom. 
     The sleeve elements  105  are moreover connected to the central springing element  110  by stabilizing buttress elements  112 . 
     Adjoining the central springing element are provided side springing elements, indicated by the reference number  120 , which also have an elongated-8 pattern and are arranged on opposite sides of the plane defined by the connecting rods or bars  106 . 
     Said side springing elements, in particular, have flat portions  121 , on their outer walls, allowing to define a broad flat region for glueing conventional padding and coating layers, made for finishing the mattress inside the closure sheath or lining thereof. 
     As shown, the flat portions  121  are advantageously coupled by a reinforcing lug  112 . 
     The mattress, generally indicated by the reference number  140 , comprises, as in the above disclosed embodiment thereof, conventional padding and coating layers, generally indicated by the reference number  131  and made for finishing the mattress inside the closure lining thereof. 
     At the perimetrical regions of the mattress  140  are moreover provided perimetrical blocks  141 , made of a foamed plastic material, such as foamed polyurethane, latex foam and the like, defining the mattress contour and providing a proper finishing of the springing construction housing region. 
     By the above disclosed device it is possible to provide a very efficient springing or suspension construction, which can be assembled in a very quick manner and which does not use metal elements, and, moreover, is adapted to anatomically support a human body. 
     From the above disclosure it should be apparent that the invention fully achieves the intended aim and objects. 
     In particular, the fact is to be pointed out that the invention as provided has springing construction based on the use of a modular element which can be easily made, and which is very efficient from an operating standpoint and can be furthermore assembled in a very quick manner. 
     The invention, as disclosed, is susceptible to several modifications and variations, all coming within the scope of the invention. 
     Moreover, all the constructional details can be replaced by other technically equivalent elements.