• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Sole for footwear with a porous filler and method of manufacturing said filling; wherein the sole comprises a support base (1) on the ground, an elastically deformable porous filler (2) and, optionally, a support foot (3); said porous filler (2) comprising non-periodic structures of columns (24) interconnected in two or three dimensions that give rise to a series of pores (25) and to zones with different degrees of porosity (21, 22, 23) and, therefore, different degree of mechanical damping; in which zones of variable porosity the columns (24) that make up said pores (25) have variable thicknesses and separations, and whose pores (25) are the final result of a design process that uses complex surfaces based on voronoi geometry in 2 and 3 dimensions. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2578730A1
    申请号:ES201530105
    申请日:2015-01-28
    公开日:2016-07-29
    发明作者:Sergio GÓMEZ GONZÁLEZ；Enrique FERNÁNDEZ AGUADO；José LÓPEZ LÓPEZ
    申请人:Universitat Politecnica de Catalunya UPC；
    IPC主号:
    专利说明:

    SOLE FOR FOOTWEAR WITH A POROUS FILLING AND MANUFACTURING PROCEDURE OF SUCH FILLING Object of the invention.
    The present invention relates to a sole for footwear that has means capable of damping the pressure suffered by the foot during the tread process,
    10 provide and improve your comfort depending on the type of activity and the characteristics of an individual or group of individuals with an interest in the same walking or sports activity.
    The damping of the pressure is produced from a porous filling, with a
    15 structure of pores and columns similar to the arrangement adopted by the trabecular bone tissue; said columns presenting a variable columnar width, separation and density, depending on the area of the sole, the type of activity to be carried out by the user or group of users and by their physical characteristics (weight, height, etc.).
    20 According to the method of the invention, the design of the porous padding structure of the sole, as well as the distribution of the columnar density is performed according to the characteristics of an individual or group of individuals, and the activity to be performed, from biomechanical studies of the tread, which allows defining the necessary characteristics of the porous padding of the sole that can be manufactured from techniques
    25 rapid prototyping additives, for example, with polymeric materials.
    The invention also allows, by the geometric characteristics of interconnected porosity of the filling, a constant renewal of the air through the sole so as to keep the foot airy. Field of application of the invention.
    This invention is applicable in the field dedicated to the manufacture of footwear, and more specifically soles for footwear.

    State of the art
    Currently, soles of sports shoes with air chambers inside are sold in order to cushion the tread when pressures such as
    5 consequence of jumps practiced in sports activities. Air chambers,currently employed, they are characterized by occupying large areas, such asthe heel, and always offer the same answer regardless ofanthropomorphic characteristics of the user, the tread region and the type ofsport activity.
    10 Other sole models, formed by fillings composed of plate or columnar elements, distributed by the sole periodically, allow to dampen the pressure made by the foot in the tread process without taking into account the different regions, the type of activity carried out or the physical characteristics of the user.
    The objective of the present invention is to achieve a sole for footwear with a system for damping the tread from a porous filling, with a structure of holes and columns, similar to trabecular bone tissue, said columns presenting dimensions and distribution variables, depending on the needs of the
    20 user or group of users, defined based on the type of activity to be performed and biomechanical tread studies. In addition, by the arrangement of the columns, the three-dimensional porous filling allows the interior of the footwear to be self-ventilated due precisely to the three-dimensional arrangement of the pores. Description of the invention.
    The present invention relates to a sole for footwear comprising a base for contact with the ground and optionally a foot support insole, has: a porous padding formed by non-periodic column structures
    30 interconnected in two or three dimensions; and differentiated areas with varying degrees of consistency or damping; and in whose distinct zones the columns that make up the pores of the landfill have a variable thickness and separation.
    35 The distribution of the cushion columns, their density (number of columns per unit area of the sole) and dimensions are defined by the implementation of


    Voronoi diagrams in two or three dimensions (2D or 3D) depending on the user's tread needs evaluated from static fingerprint analysis or dynamic analysis by pressure platform.
    5 Thus, heavier users may wear footwear with a padding formed fromreinforced columns with greater diameter, smaller columnar separation and greaterconnectivity between the columns. Columnar density will be higher in areas ofhigher requirement, while less demanding areas will have a densityminor columnar and in accordance with the damping requirements.
    10 More specifically, by way of example, you can define a single compartment (single-piece case) or several compartments in the sole of the footwear depending on the type of activity to be carried out and the type of footprint of the user (for example, arc of the footprint, low, medium or high). For each of them, and depending on the pressure zones,
    15 activity and characteristics of the user, a columnar pattern is established from a number of nucleation points of Voronoi cells in two or three dimensions, which defines the columnar density of the elastic and deformable elements.
    The base and, if necessary, sole sole have perforations in order to
    20 facilitate the constant renewal of the air through the filling or porous 3D structure of the sole and keep the foot airy.
    In an embodiment of the invention the gaps or pores delimited by the 3D structure formed in a certain material (for example, elastomeric type), are filled
    25 of a second polymeric material other than that of the 3D structure; thus obtaining a non-porous, or compact, filling made of two different materials. Obtaining this type of filling is possible by printing, layer by layer and at the same time, the two materials; using rapid prototyping machines with two extruder nozzles.
    In this invention a method of manufacturing the porous padding of the shoe sole mentioned above is included. According to the invention said method comprises:
    a) obtaining data related to the distribution of different pressure points in a footprint area of an individual or a group of individuals with


    interest in the same marching and / or sports activity during the practice of said activity;
    b) the treatment of the data obtained, related to the distribution of the points ofpressure, with computer-aided design programs (DAO); and the generation5 using complex surface design techniques based on the diagrams ofVoronoi of pore structures, not periodic and interconnected in threedimensions (volumetric distribution) and / or two dimensions (flat distribution); Ymechanically defining the thickness and separation of columns thatmake up the pore, depending on the buffer required in areas or regions
    10 with different tread pressures and;
    c) the export and supply of files with the structures generated by the DAO computer-aided design programs, to manufacturing computer programs by means of additive rapid prototyping techniques, of
    15 injection of plastics, or lamination and die cutting, with previously generated structures.
    More specifically, the generation by complex surface design techniques based on the Voronoi diagrams of the pore structures and the
    20 definition of the columns that make them up, in three dimensions or 3D and / or in two dimensions or 2D indicated in section b), contemplates the following differentiated steps for one type or another:
    For 3D sole models: 25
    -  Generation of irregular polyhedra (three-dimensional geometries whose faces are flat and enclose a finite volume) from a plurality of points distributed in space, where the flat faces of the polyhedra are generated in the mediatrix of the joint segment between the points in the space. The intersection of all planes
    30 created and their cut in the intersection regions generate irregular polyhedral surfaces or Voronoi cells.
    -  The decomposition of polyhedra on individual flat surfaces and the copy
    equidistant from each of them, defining individual polyhedral cells and 35 separated from each other. The three-dimensional parameterization allows to regulate the structure of


    3D polyhedra from the definition of the number of nucleation points and the separation between the equidistant faces that define the polyhedra.
    -  The union or sewing of the surfaces that define the equidistant faces generates a
    5 solid volume with irregular polyhedron shape. A Boolean difference or volumetric subtraction operation between the solid polyhedra generated and the total volume where they are contained defines the final shape of the porous sole.
    -  The smoothing of the forms by rounding operations of edges and / or faces
    10 allows to create structures with smooth transitions that distribute the tensions in a more homogeneous way, transmitting the loads better.
    In a broad sense, the procedure for obtaining the porous structures explained above can be used to make different point distributions
    15 in space so that there are regions or volumes with more or less number of points that allow generating spatial distributions with different density or degree of compactness, maintaining the continuity of the entire structure.
    And for 2D sole models: 20
    -  Drawing, based on a tread study, of contour or isobar curves that define regions or areas of the sole that are under the same pressure range.
    25 - Drawing of more or less nucleation points generated by Voronoi cells in a two-dimensional space, for each of the regions, and as a function of pressure.
    -  Decomposition of all drawn entities and, by subsequent equidistance operation, defining the width of the columns to regulate the density of the sole
    30 in the various regions of it. In this way, regulating the number of nucleation points and the width of the equidistance regulates the density of the sole in the various regions of the same.
    -  Creation of a solid volume of the sole by extrusion. 35


    -  Smoothing of the shapes by rounding edges and / or faces. The procedure also allows for a solid transition between the various regions.
    At this point it should be clarified that the procedures explained
    5 previously to obtain designs of the 3D or 2D sole models are not independent or limiting each other, since both procedures can be followed together with the ultimate goal of obtaining 3D models adjustable or not to the three-dimensional footprint of the plant of the foot
    10 The porous padding that defines the sole, once obtained, is incorporated into the base of the sole and is preferably fixed by gluing, or forming part of it as a continuum.
    Obtaining data related to the distribution of different pressure points in
    A tread area of an individual or a group of individuals can be performed, for example, by a biometric study of the tread. Description of the figures.
    To complement the description that is being made and in order to facilitate the understanding of the features of the invention, a set of drawings is attached to the present specification in which, as an illustration and not limitation, the following has been represented :
    25 - Figure 1 shows an exploded perspective view of an embodiment of a 3D sole provided with a base with several compartments for housing the porous filling of the invention and a top template; presenting the base and the sole some holes in order to facilitate the renewal of air inside the filling.
    -  Figure 2 shows a perspective sectioned detail of the porous filling of the previous figure.
    -  Figure 3 shows a single-piece plan view of the porous filling, 35 completely filling the base of the sole in order to cushion the tread.


    -  Figure 4 shows a detail in plan of a portion of the porous filling in which the distribution of interconnected columns in two dimensions can be observed, defining zones of different columnar density and with different degree of
    5 cushioning of the filling.
    -  Figure 5 shows a perspective view of a portion of the porous padding of the sole, in which the structure of interconnected pores and columns in three dimensions can be observed.
    -  Figures 6, 7, 8, 9, 10 and 11 show, in respective perspective views, the different steps of the process of generating the porous 3D filling models, according to the manufacturing process of the sole object of the invention.
    15 - Figures 12, 13, 14, 15-A and 15-B show, in respective plan views, the different steps of the process of generating the porous filling models in 2D, according to the manufacturing process of the object sole of the invention.
    -  Figure 16 shows a perspective view of a sole portion, according to the
    20 invention, obtained by the aforementioned 2D model generation process. The porosity of the model of the figure can be manufactured in such a way that it is interconnected and facilitate the renewal of air when openings are made in each of the faces.
    25 - Figure 17 shows a perspective view of the connections between different regions with different density and different columnar width. As you can see, there is a smooth transition between each of the columns when they are connected between different regions. The transition between regions is applicable for both 2D-generated and 3D-generated models. Preferred embodiment of the invention.
    As can be seen in figure 1, this sole for footwear with a porous padding, comprises a base (1) intended to contact the ground, an elastically deformable padding (2) 35 and, in this specific case, a template (3) that forms a surface


    for foot support.
    In said figure 1 the base (1) is divided into three regions (11, 12, 13)provided with respective portions (21, 22, 23) of porous filling (2) with different5 degrees of damping, although it can also be presented in a single block withoutcompartmentalize
    It is also provided that the base (1) and the porous filling (2) can be formed in a single piece.
    The porous filling (2) comprises non-periodic structures of columns (24) and pores (25) interconnected in two dimensions as shown in Figure 4 and Figure 16, or in three dimensions as represented in the Figures 5, 11 and 17; said porous filling (2) defining distinct zones with different degrees of
    15 damping and in which the columns (24) have a variable thickness and separation that give rise to different column densities.
    According to the three-dimensional design procedure of said porous filling, the structures of the filling are generated by creating surfaces
    20 complexes based on Voronoi diagrams from the biomechanical study of the tread of an individual or a group of individuals interested in the same activity, whether on the march or related to any other sport.
    Specifically, one of the essential steps of the filling manufacturing process
    25 porous is the generation of pore structures, not periodic and interconnected either in 3D or in 2D or both, and the definition of the thickness and separation of some columns that make up said pores, depending on the damping required in areas or regions with different tread pressures
    This allows the position and dimensions of the columns (24) to dampen the
    30 pressure undergone by the foot during the tread process or during the practice of the sport in question, providing stability and improving your comfort depending on the type of activity performed and the characteristics of the user, thus making it possible to correct the tread. The arrangement of the columnar density also makes it possible to correct the cavities (supinators) or flat feet (over-pronator) from the
    35 distribution of different columnar density in the sole


    In the example shown in Figures 1 and 2, the porous filler (2) is constituted by the mentioned portions (21, 22, 23) intended to accommodate in the regions (11, 12, 13) of the base (1) of the sole; however, and as shown in Figure 3, the
    5 porous padding (2) can have a single piece configuration to cover the entire length of the base (1) of the sole.
    In the example shown in Figure 1, the base (1) and the template (3) are provided with ventilation holes (14, 31), in connection with the pores (25) of the porous filling
    10 (2) promoting ventilation of the sole and consequently of the user's foot.
    The internal structure of the porous filling (2), defined from the Voronoi diagrams, can be manufactured from additive rapid prototyping techniques defining areas of different cushioning against the tread on the sole or even the
    15 correction of any fault of the user's own tread.
    According to figures 6 to 16, the different steps of the generation process of the porous filling models in 3D (figures 6 to 11) and 2D (figures 12 to 16) are observed, according to the process of manufacturing the porous filling (2 ) of the sole of the
    Invention, as mentioned above.
    More specifically, Figure 6 shows a cubic space in which the points from which it is divided for the generation of 3D models are distributed.
    25 Figure 7 shows the same cubic space with irregular polyhedral surfaces or Voronoi cells generated from the polyhedra obtained with the points in the previous step of the process.
    Figure 8 shows the decomposition of the polyhedra previously obtained on 30 individual flat surfaces and equidistant.
    Figure 9 shows the irregular polyhedron obtained by joining or sewing the flat surfaces of the previous step.
    35 Figure 10 shows the final shape defining the porous filling after the operation of


    subtraction of the polyhedra obtained in the previous step to the total volume of the space.
    Finally, Figure 11 shows the result obtained after the rounding of edges and faces to define the smoothed porous filling shape.
    5 For its part, Figure 12 shows the contour curves that define the different regions in the porous filling, according to the different pressure in the tread that has been observed in the studies of the same.
    10 Figure 13 shows the inclusion of the points, according to the above-mentioned regions and the generation with them of the Voronoi cells in the two-dimensional space.
    Figure 14 shows the cells generated, without the points, and Figures 15-A and 15-B show two possible width options in the equidistance of the cores of said 15 cells, applicable to the different regions of the porous fill.
    Figure 16 shows the final result of the porous filling (2) in a 2D model thereof, after the extrusion operations performed with the two-dimensional drawings obtained in the previous steps.
    20 Figure 17 shows in perspective the connections between different areas with different density and different columnar width, showing a smooth transition between each of the columns when connected between different regions.
    Once the nature of the invention has been sufficiently described, as well as an example of a preferred embodiment, it is stated for the appropriate purposes that the materials, shape, size and arrangement of the described elements may be modified, provided that this does not imply alteration of the essential characteristics of the invention claimed below.

    权利要求:
    Claims (9)
    [1]
    1.-Sole for footwear comprising a base (1) of support on the ground, a porous padding (2) elastically deformable and, optionally, a foot support insole (3) characterized in that said porous padding (2) is formed from non-periodic structures of columns (24) interconnected in two or three dimensions that define pore units (25) that are grouped in areas with different degree of damping because they contain said columns (24) that make up said pores (25) different thickness and variable separation, and whose pores are the result of a design process from complex surfaces based on Voronoi geometry in two or three dimensions (2D or 3D).
    [2]
    2. Sole, according to claim 1; characterized in that the base (1) and the porous filling (2) are formed in a single piece.
    [3]
    3.-Sole according to claim 1; characterized in that the base (1) of the sole is compartmentalized in several regions (11, 12, 13), provided with respective portions or areas (21, 22, 23) of porous padding (2) with different degrees of damping.
    [4]
    4. Sole, according to any one of claims 1, 2, 3; characterized in that the base (1) of the sole, and if necessary the template (3), have ventilation holes (14, 31) in connection with the pores (25) of the padding (2).
    [5]
    5. Sole, according to any one of claims 1, 2, 3; characterized in that, both in the models generated by Voronoi geometry in 2D or 3D, the columns that join zones of different pore density have a smooth and continuous transition in order to cushion and transmit the load better.
    [6]
    6. Sole according to any one of claims 1, 2, 3; characterized in that the pores delimited by the 3D columnar structure of the porous filler (2), formed in a certain material, are filled with a second different polymeric material, resulting in a final non-porous or compact filler manufactured, therefore, with at least Two different materials.

    [7]
    7. Method of manufacturing the porous padding of the sole for footwear of the preceding claims; characterized in that it comprises:
    a) Obtaining data related to the distribution of different pressure points in a footprint area of an individual or a group of individuals with an interest in the same walking and / or sports activity during the practice of said activity;
    b) the treatment of the data obtained, related to the distribution of pressure points, with computer-aided design software (DAO); and the generation through complex surface design techniques based on Voronoi diagrams of non-periodic and interconnected pore structures in three and / or two dimensions; and mechanically defining the thickness and separation of columns that make up the pore, depending on the damping required in areas or regions with different tread pressures;
    c) the export and supply of files with the structures generated by the DAO computer-aided design programs, to manufacturing computer programs by means of additive rapid prototyping, plastic injection, or lamination and die-cutting techniques, with the structures previously generated.
    [8]
    8. Method according to claim 7; characterized in that the generation of complex surfaces based on the Voronoi diagrams of the pore structures, in three dimensions, comprises the following steps:
    -  Generation of irregular polyhedra from a plurality of points distributed in the space, where the flat faces of the polyhedra are generated in the mediatrix of the segment of union between the points in the space. The intersection of all the planes created and their clipping in the intersection regions generate irregular polyhedral surfaces or Voronoi cells.
    -  Decomposition of polyhedra on individual flat surfaces and equidistant copy of each of them, defining individual polyhedral cells and

    separated from each other. The three-dimensional parameterization allows to regulate the structure of the 3D polyhedra from the definition of the number of nucleation points and the separation between the equidistant faces that define the polyhedra.
    5 - Union or sewing of the surfaces that define the equidistant faces, an action that generates a solid volume shaped like an irregular polyhedron. A Boolean difference or volumetric subtraction operation between the solid polyhedra generated and the total volume where they are contained defines the final shape of the porous sole.
    10 - The smoothing of the forms by rounding operations of edges and / or faces.
    [9]
    9. Method according to claim 7 or 8; characterized in that the generation of complex surfaces based on the Voronoi diagrams of the
    15 pore structures, in two dimensions, comprise the following steps:
    -  Drawing, based on a tread study, of the contour or isobar curves that define regions or areas of the sole that are under the same pressure range.
    -  Drawing of more or less nucleation points generated by Voronoi cells in a two-dimensional space, for each of the regions, and as a function of pressure.
    25 - Decomposition of all the entities drawn and, by subsequent operation of equidistance, definition of the width of the columns to regulate the density of the sole in the different regions of the same.
    -  Creation of a solid volume of the sole by extrusion. 30
    -  Smoothing of the shapes by rounding edges and / or faces.





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    ES201530105A|ES2578730B1|2015-01-28|2015-01-28|Sole for footwear with a porous padding and manufacturing process for said padding|ES201530105A| ES2578730B1|2015-01-28|2015-01-28|Sole for footwear with a porous padding and manufacturing process for said padding|
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