JP7128231B2 - soles and shoes - Google Patents

Description

TECHNICAL FIELD The present invention relates to a shoe sole provided with a shock-absorbing cushioning material , and a shoe provided with the shoe sole.

Conventionally, various cushioning materials are known for cushioning impacts, and these various cushioning materials are used according to their uses. For example, in shoes, cushioning materials are sometimes provided on the soles for the purpose of alleviating the impact that occurs when the shoe hits the ground. A member made of resin or rubber is generally used as a cushioning material provided on the shoe sole.

In recent years, shoes have been developed in which a portion having a lattice structure or a web structure is provided on the sole to improve cushioning performance not only in terms of material but also in terms of structure. For example, US Patent Publication No. 2018/0049514 (Patent Document 1) discloses a shoe having a sole provided with a portion having a lattice structure.

On the other hand, in Japanese Patent Publication No. 2017-527637 (Patent Document 2), as a three-dimensional object manufactured using the three-dimensional additive manufacturing method, a polyhedron having a cavity inside and a geometric such as a triple periodic minimal curved surface It is disclosed that it is possible to manufacture a three-dimensional object with a thickness based on the surface structure, and that by configuring the three-dimensional object with an elastic material, it can be applied, for example, to the sole of a shoe. ing.

U.S. Patent Publication No. 2018/0049514 Japanese Patent Publication No. 2017-527637

Here, a cushioning material having a thicker structure based on the geometric surface structure as described above achieves higher compressive rigidity than a cushioning material including a portion having a lattice structure or a web structure. It has a structural feature that it is easy to

However, when attempting to obtain high compressive rigidity in a cushioning material having such a structure, the thickness of the wall increases and the space factor also increases, resulting in a significant increase in the weight of the cushioning material. there is a problem In particular, when it is desired to locally increase the compressive rigidity of only a portion of the cushioning material, if the wall thickness of that portion is increased, the weight of that portion will increase significantly, and the weight of the cushioning material as a whole will increase. The increase is unavoidable and becomes a major obstacle to weight reduction.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a shoe sole provided with a cushioning material that is lightweight and has excellent cushioning performance, and a shoe provided with the shoe sole. do.

A shoe sole based on the first aspect of the present invention comprises a cushioning material, the cushioning material being a three-dimensional wall formed of walls whose outer shape is defined by a pair of parallel planes or curved surfaces. It includes a three-dimensional structure in which the shape is a unit structure, and the unit structure is regularly and continuously repeatedly arranged in at least one direction. In the shoe sole according to the first aspect of the present invention, the deformed portion, which does not correspond to the wall defining the unit structure, is the region of the three-dimensional structure where the unit structure is arranged. is locally provided in the buffer region, and the deformed portion forms a plate shape having a thickness in a direction intersecting the axial direction in which the buffer material exerts a buffer function by receiving a load, and is adjacent to the It is connected so as to be integrated with the unit structure of the part.
A shoe sole based on the second aspect of the present invention comprises a cushioning material, the cushioning material being a three-dimensional wall formed of walls whose outer shape is defined by a pair of parallel planes or curved surfaces. It includes a three-dimensional structure in which the shape is a unit structure, and the unit structure is regularly and continuously repeatedly arranged in at least one direction. In the shoe sole based on the second aspect of the present invention, the deformed portion, which does not correspond to the wall defining the unit structure, is the region of the three-dimensional structure where the unit structure is arranged. is locally provided in the buffer region, and the deformed portion has a plate shape having a thickness in a direction intersecting the axial direction in which the buffer material exerts a buffer function by receiving a load, and the buffer It reaches both ends of the buffer region in the axial direction so as to traverse the region.
A shoe sole based on the third aspect of the present invention comprises a cushioning material, the cushioning material being a three-dimensional wall formed of walls whose outer shape is defined by a pair of parallel planes or curved surfaces. It includes a three-dimensional structure in which the shape is a unit structure, and the unit structure is regularly and continuously repeatedly arranged in at least one direction. In the shoe sole according to the third aspect of the present invention, the deformed portion, which does not correspond to the wall defining the unit structure, is the region of the three-dimensional structure where the unit structure is arranged. is locally provided in the buffer region, and the deformed portion has a plate shape having a thickness in a direction intersecting the axial direction in which the buffer material exerts a buffer function by receiving a load, and the shaft It is provided so as to cover at least part of the opening located at the end of the buffer region in the direction crossing the direction.

A shoe according to the present invention comprises any one of the soles according to the first to third aspects of the present invention and an upper provided above the sole.

ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the shoe sole provided with the cushioning material which is lightweight and excellent in shock-absorbing performance, and the shoes provided with the said sole.

1 is a perspective view of a cushioning material according to Embodiment 1; FIG. FIG. 2 is a perspective view of a unit structure of the cushioning material shown in FIG. 1; FIG. 2 is a front view of the cushioning material shown in FIG. 1; FIG. 2 is a plan view of the cushioning material shown in FIG. 1; FIG. 2 is a cross-sectional view of the cushioning material shown in FIG. 1; FIG. 2 is a cross-sectional view of the cushioning material shown in FIG. 1; 5 is a graph showing results of simulating the cushioning performance of cushioning materials according to Verification Examples 1 and 2. FIG. FIG. 11 is a plan view of a cushioning material according to a first modified example; FIG. 11 is a plan view of a cushioning material according to a second modified example; FIG. 11 is a plan view of a cushioning material according to a third modified example; FIG. 10 is a perspective view of a cushioning material according to Embodiment 2; FIG. 12 is a cross-sectional view of the cushioning material shown in FIG. 11; 12A and 12B are views showing first to fifth configuration examples of the end portion of the cushioning material shown in FIG. 11; FIG. 12A and 12B are views showing first and sixth to ninth configuration examples of the end portion of the cushioning material shown in FIG. 11; FIG. FIG. 11 is a perspective view of a cushioning material according to a fourth modified example; FIG. 11 is a perspective view of a cushioning material according to a fifth modified example; FIG. 11 is a perspective view of a cushioning material according to a sixth modified example; FIG. 11 is a perspective view of a cushioning material according to Embodiment 3; FIG. 19 is a cross-sectional view of the cushioning material shown in FIG. 18; FIG. 11 is a perspective view of a cushioning material according to Embodiment 4; FIG. 21 is a cross-sectional view of the cushioning material shown in FIG. 20; FIG. 11 is a perspective view of a cushioning material according to Embodiment 5; FIG. 23 is a perspective view of a unit structure of the cushioning material shown in FIG. 22; FIG. 11 is a perspective view of a cushioning material according to Embodiment 6; FIG. 14 is a perspective view of a sole according to Embodiment 7 and a shoe provided with the same; Figure 26 is a side view of the sole shown in Figure 25; FIG. 26 is a schematic diagram showing the configuration of the sole shown in FIG. 25; FIG. 26 is a perspective view of a cushioning material included in the sole shown in FIG. 25; FIG. 11 is a perspective view of a cushioning material included in a shoe sole according to a seventh modified example; FIG. 21 is a perspective view of a cushioning material included in a shoe sole according to an eighth modified example; FIG. 12 is a schematic diagram showing the configuration of a shoe sole according to Embodiment 8; FIG. 21 is a schematic diagram showing the configuration of a shoe sole according to Embodiment 9; FIG. 20 is a schematic diagram showing the configuration of a shoe sole according to Embodiment 10; FIG. 20 is a schematic diagram showing the configuration of a shoe sole according to Embodiment 11; FIG. 20 is a schematic diagram showing the configuration of a shoe sole according to Embodiment 12; FIG. 21 is a schematic diagram showing the configuration of a shoe sole according to Embodiment 13; FIG. 37 is a perspective view of a cushioning material included in the sole shown in FIG. 36; 37 is a schematic diagram showing an arrangement example of unit structures of the cushioning material in the sole shown in FIG. 36. FIG. FIG. 21 is a perspective view of a cushioning material included in a shoe sole according to a ninth modification; FIG. 20 is a perspective view of a cushioning material included in a shoe sole according to a tenth modification;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the embodiments shown below, the same or common parts are denoted by the same reference numerals in the drawings, and the description thereof will not be repeated.

(Embodiment 1)
FIG. 1 is a perspective view of a cushioning material according to Embodiment 1. FIG. 2 is a perspective view of a unit structure of the cushioning material shown in FIG. 1. FIG. 3 is a front view of the cushioning material viewed from the direction of arrow III shown in FIG. 1. FIG. 4 is a plan view of the cushioning material viewed from the direction of arrow IV shown in FIG. 1. FIG. FIG. 5 is a cross-sectional view of the cushioning material taken along line VV shown in FIG. 6 is a cross-sectional view of the cushioning material taken along line VI-VI shown in FIG. A cushioning material 1A according to the present embodiment will be described below with reference to FIGS. 1 to 6. FIG.

As shown in FIGS. 1 to 6, the cushioning material 1A includes a three-dimensional structure S having a plurality of unit structures U (see especially FIGS. 1 and 2). Each of the plurality of unit structures U has a three-dimensional shape formed by walls 10 whose outer shape is defined by a pair of parallel curved surfaces.

Here, in FIGS. 1 and 2, in order to facilitate understanding, reference numeral U is not attached to the unit structure in a strict sense, and the space occupied by the unit structure has a rectangular parallelepiped shape. is attached to the unit space of 1 to 4, for ease of understanding, the outer surface of the cushioning material 1A, which has a substantially rectangular parallelepiped shape as a whole, is oriented in each of the X, Y, and Z directions shown in the drawings. A dark color is applied to the end surface located at the edge to distinguish it from other outer surfaces. As shown in FIG. 2, let Lx be the dimension of the unit structure U in the width direction (the X direction shown in the figure), and let Ly be the dimension of the unit structure U in the depth direction (the Y direction shown in the figure). , the dimension in the height direction (the Z direction shown in the drawing) of the unit structure U is Lz.

A plurality of unit structures U are regularly and continuously repeatedly arranged along each of the width direction, the depth direction and the height direction. In the cushioning material 1A according to the present embodiment, six unit structures U are arranged side by side in the X direction, which is the width direction, and in the Y direction, which is the depth direction. Two unit structures U are arranged side by side.

The cushioning material 1A according to the present embodiment is intended to exhibit a cushioning function in the height direction (the Z direction shown in the drawing). Therefore, the axial direction, which is the direction in which the cushioning material 1A exerts its cushioning function by receiving a load, coincides with the above-described height direction. The number of repetitions of the unit structures U in the width, depth, and height directions is not particularly limited, and two or more are arranged along at least one of these three directions. All you have to do is

As described above, each of the multiple unit structures U has a three-dimensional shape formed by the walls 10 . Therefore, the three-dimensional structure S is also configured by an assembly of these walls 10 by continuously connecting the plurality of unit structures U to each other.

Here, the three-dimensional structure S included in the cushioning material 1A has a structure in which thickness is added based on the geometric surface structure. In the cushioning material 1A according to the present embodiment, the surface structure is a Schwartz P structure, which is a kind of mathematically defined triple period minimal curved surface. A minimal curved surface is defined as a surface having the smallest area among curved surfaces having a given closed curve as a boundary.

As shown in FIG. 6, the three-dimensional structure S, which is based on the Schwartz P structure and has a thickness added thereto, is a portion where a meandering cross-sectional shape appears when this is cut along a specific plane. It has a meandering portion 11 . In this embodiment, the specific plane is a plane perpendicular to the plane of the paper and parallel to the line VI-VI in FIG.

Due to the structure of the three-dimensional structure S, there are three types of meandering portions 11 in total: one extending along the width direction, one extending along the depth direction, and one extending along the height direction. However, the focus here is on the serpentine portion 11 extending along the height direction (that is, the Z direction) that appears in the cross section shown in FIG.

The meandering portion 11 extending in the height direction has a plurality of turn points 12 positioned along the height direction. 14 are provided respectively. Among these, the internal corner portion 13 is a portion that appears to have a concave shape on the surface of the wall 10 in the above cross-sectional shape, and the external corner portion 14 is a portion that appears convex on the surface of the wall 10 in the above cross-sectional shape. It is a part that appears to have a shape of a shape. Here, in the meandering portion 11 extending in the height direction, the distance between adjacent meandering portions varies depending on the position in the height direction, and the above-mentioned distance moves along the height direction. It increases and decreases cyclically.

The dimensions Lx, Ly, and Lz described above are not particularly limited, and various changes are possible. ing. Among these Lx, Ly, and Lz, the dimension Lz in the height direction, which is the axial direction in which the cushioning function is intended to be exhibited, is defined as L1, and the remaining dimension Lx in the width direction and the dimension Ly in the depth direction When the longer of L2 is L2, if these dimensions L1 and L2 satisfy the condition of 1.1 ≤ L1/L2 ≤ 4.0, high compression rigidity can be obtained, and 0.1 ≤ L1 If the condition of /L2≦0.9 is satisfied, high deformability can be obtained due to low compressive rigidity. However, the dimensions L1 and L2 described above do not necessarily have to satisfy these conditions, and it is arbitrary whether or not they satisfy these conditions.

As shown in FIGS. 1 and 3 to 6, the cushioning material 1A has a deformed portion 30 in addition to the wall 10 described above. The deformed portion 30 is a portion that does not correspond to the wall 10 that defines the unit structure U, and is distinguished from the wall 10 .

The deformed portion 30 is localized in a buffer region (in the present embodiment, the entire buffer material 1A corresponds to the buffer region), which is a region in which the unit structures U of the three-dimensional structure S described above are arranged. is provided in More specifically, in the present embodiment, the deformed portion 30 is provided in the central portion when the cushioning material 1A is viewed from above, and is not provided in the peripheral portion other than the central portion. .

The deformed portion 30 has a plate shape having a thickness in a direction intersecting the axial direction (that is, the Z direction) in which the cushioning material 1A exerts its cushioning function by receiving a load. More specifically, in the present embodiment, deformed portion 30 has a rectangular tubular shape consisting of four plate-like portions, each plate-like portion extending along the Z direction shown in the drawing. extended. In particular, in the present embodiment, the four plate-shaped portions forming the deformed portion 30 reach both ends of the cushioning material 1A so as to cut through the cushioning area along the Z direction shown in the figure.

The deformed portion 30 is arranged in a space located between the meandering portions 11 described above, and is connected to the adjacent unit structural body U so as to be integrated therewith. Therefore, the portion of the cushioning material 1A provided with the deformed portion 30 has higher compression rigidity than the other portion of the cushioning material 1A (that is, the portion not provided with the deformed portion 30). Become.

This is because the deformed portion 30 has a plate shape extending along the axial direction at the portion of the cushioning material 1A where the deformed portion 30 is provided. This is because the compressive rigidity of is additionally added to the compressive rigidity of the wall 10 at that site. Therefore, by providing such deformed portion 30 in the cushioning material 1A, it becomes possible to form a local high-rigidity portion in the cushioning material 1A.

As described above, when the deformed portion 30 is configured to reach both ends of the cushioning material 1A along the axial direction, the deformed portion 30 acts like a screen. A more pronounced effect can be obtained.

In this way, like the cushioning material 1A according to the present embodiment, the deformed portion 30, which does not correspond to the walls 10 that define the unit structures U, is formed in the region of the three-dimensional structure S where the unit structures U are arranged. By adopting a configuration in which the buffer is locally provided in a certain buffer region, a lightweight buffer material with excellent buffer performance can be obtained.

Here, the method of manufacturing the cushioning material 1A is not particularly limited, but the cushioning material 1A can be manufactured, for example, by modeling using a three-dimensional layered modeling apparatus. When the cushioning material 1A is manufactured by modeling using this three-dimensional layered modeling apparatus, the material of the wall 10 and the material of the deformed portion 30 are the same. However, in the case of using a three-dimensional additive manufacturing apparatus of the Fused Deposition Modeling (FDM) method, it is possible to make the material of the wall 10 and the material of the deformed portion 30 different.

As the material of the cushioning material 1A (that is, the wall 10 and the deformed portion 30), basically any material having high elasticity may be used, but a resin material or a rubber material is preferable. . More specific materials include thermoplastic resin such as ethylene-vinyl acetate copolymer (EVA) when the cushioning material 1A is made of resin, and polyurethane (PU). can be a thermosetting resin. On the other hand, when the cushioning material 1A is made of rubber, it can be made of butadiene rubber, for example.

The cushioning material 1A can also be composed of a polymer composition. In that case, the polymer to be contained in the polymer composition includes, for example, olefinic polymers such as olefinic elastomers and olefinic resins. Examples of olefinic polymers include polyethylene (eg, linear low density polyethylene (LLDPE), high density polyethylene (HDPE), etc.), polypropylene, ethylene-propylene copolymer, propylene-1-hexene copolymer, propylene-4 -methyl-1-pentene copolymer, propylene-1-butene copolymer, ethylene-1-hexene copolymer, ethylene-4-methyl-pentene copolymer, ethylene-1-butene copolymer, 1- Butene-1-hexene copolymer, 1-butene-4-methyl-pentene, ethylene-methacrylic acid copolymer, ethylene-methyl methacrylate copolymer, ethylene-ethyl methacrylate copolymer, ethylene-butyl methacrylate Copolymer, ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate copolymer, propylene-methacrylic acid copolymer, propylene-methyl methacrylate copolymer, propylene-ethyl methacrylate Copolymer, propylene-butyl methacrylate copolymer, propylene-methyl acrylate copolymer, propylene-ethyl acrylate copolymer, propylene-butyl acrylate copolymer, ethylene-vinyl acetate copolymer (EVA), propylene- Examples include polyolefins of vinyl acetate copolymers.

Further, the polymer may be an amide-based polymer such as an amide-based elastomer or an amide-based resin. Examples of amide-based polymers include polyamide 6, polyamide 11, polyamide 12, polyamide 66, polyamide 610 and the like.

Further, the polymer may be an ester-based polymer such as an ester-based elastomer or an ester-based resin. Examples of ester-based polymers include polyethylene terephthalate and polybutylene terephthalate.

Further, the polymer may be, for example, a urethane-based polymer such as a urethane-based elastomer or a urethane-based resin. Examples of urethane-based polymers include polyester-based polyurethanes and polyether-based polyurethanes.

Further, the polymer may be, for example, a styrene-based polymer such as a styrene-based elastomer or a styrene-based resin. Styrene-based elastomers include styrene-ethylene-butylene copolymer (SEB), styrene-butadiene-styrene copolymer (SBS), and hydrogenated SBS (styrene-ethylene-butylene-styrene copolymer (SEBS)). , styrene-isoprene-styrene copolymer (SIS), hydrogenated SIS (styrene-ethylene-propylene-styrene copolymer (SEPS)), styrene-isobutylene-styrene copolymer (SIBS), styrene-butadiene- Styrene-butadiene (SBSB), styrene-butadiene-styrene-butadiene-styrene (SBSBS), and the like. Examples of styrene resins include polystyrene, acrylonitrile styrene resin (AS), acrylonitrile butadiene styrene resin (ABS), and the like.

In addition, the above polymers include, for example, acrylic polymers such as polymethyl methacrylate, urethane acrylic polymers, polyester acrylic polymers, polyether acrylic polymers, polycarbonate acrylic polymers, epoxy acrylic polymers, conjugated diene polymer acrylic polymers, and Hydrogenated products thereof, urethane-based methacrylic polymers, polyester-based methacrylic polymers, polyether-based methacrylic polymers, polycarbonate-based methacrylic polymers, epoxy-based methacrylic polymers, conjugated diene-based methacrylic polymers and hydrogenated products thereof, polyvinyl chloride-based resins, silicones system elastomer, butadiene rubber (BR), isoprene rubber (IR), chloroprene (CR), natural rubber (NR), styrene butadiene rubber (SBR), acrylonitrile butadiene rubber (NBR), butyl rubber (IIR), etc. .

As described above, the cushioning material 1A according to the present embodiment is a lightweight cushioning material with excellent cushioning performance. This is largely due to the structural features (shape features) of the cushioning material 1A. In the following, a verification test in which the present inventor simulated the cushioning performance of a cushioning material made of a three-dimensional structure S that is thickened based on the Schwartz P structure (that is, a cushioning material without the above-described deformed portion 30) Based on the results of (1), the effects brought about by the cushioning material 1A according to the present embodiment will be described.

FIG. 7 is a graph showing the result of simulating the cushioning performance of the cushioning materials according to Verification Examples 1 and 2. FIG.

In the verification test, models of the cushioning materials according to Verification Examples 1 and 2 were specifically designed, and a case where an external force was applied to these models along a predetermined direction was assumed, and the behavior in that case was simulated. Analyzes were performed individually. More specifically, so-called stress-strain curves were obtained for each of these models.

Here, as described above, the cushioning material according to Verification Examples 1 and 2 is a cushioning material made of a three-dimensional structure S having a thickness based on the Schwartz P structure (that is, the deformed portion 30 described above is provided). It is a cushioning material that does not have a wall) and is composed only of the wall 10.

More specifically, in the cushioning material according to Verification Example 1, the width, depth, and height dimensions of the unit structure U are set to 10 mm each, and the thickness t of the wall 10 is set to 1 mm. .4 mm. Note that the space factor V in this case is approximately 30%.

On the other hand, in the cushioning material according to Verification Example 2, the width, depth, and height dimensions of the unit structure U are each set to 10 mm, and the thickness t of the wall 10 is set to 1.8 mm. It is what I did. Note that the space factor V in this case is about 40%.

Moreover, the direction of the external force applied to the cushioning material according to Verification Examples 1 and 2 was the height direction, which is the above-described axial direction. It should be noted that the material of the cushioning material according to Verification Examples 1 and 2 was assumed to be urethane-based acrylic polymer.

Here, in order to increase the compressive rigidity, it is usually considered to increase the thickness of the wall 10 of the unit structural body U. However, when the thickness of the wall 10 is increased, the space factor V also increases accordingly. Therefore, the greater the thickness of the wall 10, the greater the space factor V and the heavier the cushioning material becomes. end up That is, there is a so-called trade-off relationship between securing compression rigidity and weight reduction.

However, for example, in the cushioning materials according to Verification Examples 1 and 2, if the deformed portion 30 as described above is locally provided, the portion where the deformed portion 30 is provided, as indicated by the broken line DL in FIG. is obtained, and it becomes possible to obtain the desired cushioning performance when viewed as a whole cushioning material. By using this method, it is possible to significantly reduce the weight of the cushioning material, rather than increasing the thickness of the wall 10 at that portion as a whole in order to obtain high compression stiffness locally.

Therefore, by using the cushioning material 1A according to the present embodiment described above, it is possible to provide a lightweight cushioning material with excellent cushioning performance that can be used for various purposes.

In addition, as a three-dimensional shape formed by a wall whose outer shape is defined by a pair of parallel curved surfaces, in addition to the above-mentioned Schwartz P structure with a thickness, the Schwartz D structure is used as a reference. There are those that add thickness to this, and those that add thickness to this based on the gyroid structure. Therefore, in a cushioning material that includes a three-dimensional structure that is thickened based on the Schwartz D structure or the gyroid structure as a cushioning region, the deformed portion as described above may be locally provided.

(First to Third Modifications)
8 to 10 are plan views of cushioning materials according to first to third modifications, respectively. 8 to 10, cushioning materials 1A1 to 1A3 according to first to third modifications based on the first embodiment described above will be described below.

In the above-described Embodiment 1, the case where the rectangular cylindrical deformed portion 30 is provided only in the central portion when the cushioning material 1A is viewed from above has been exemplified. By making various changes, it is possible to manufacture light-weight cushioning materials exhibiting various cushioning performances. The first to third modifications shown below illustrate cases where such modifications are made to the cushioning material 1A.

As shown in FIG. 8, in the cushioning material 1A1 according to the first modification, a plurality of mutually independent deformed portions 30 having the same shape are evenly provided over the entire cushioning area. More specifically, in the cushioning material 1A1 according to the first modified example, each of the plurality of deformed portions 30 has a rectangular tubular shape, and the deformed portions 30 having a rectangular tubular shape are staggered in plan view. are placed.

As shown in FIG. 9, the cushioning material 1A2 according to the second modified example is provided with a plurality of deformed portions of different shapes that are independent of each other in the cushioning area. More specifically, in the cushioning material 1A2 according to the second modified example, the deformed portion 30 is provided with a cylindrical shape and a square tube shape, which are arranged concentrically in a plan view. .

As shown in FIG. 10, the cushioning material 1A3 according to the third modification has a plurality of plate-shaped odd-shaped portions 30 provided in the cushioning area so as to intersect each other. More specifically, in the cushioning material 1A3 according to the third modification, the deformed portion 30 has a parallel cross shape as a whole, and is arranged so as to be positioned on the periphery of the cushioning material 1A3 when viewed from above. is doing.

In this way, even when the position, shape, number, etc. of the deformed portion 30 are variously changed, the same effects as those described in the first embodiment can be obtained. In particular, if the locally provided deformed portion 30 is evenly provided over the entire cushioning material, it is possible to obtain approximately the same cushioning performance over the entire cushioning material while achieving weight reduction. By providing the cushioning material with the deformed portion 30, it is possible to reduce the weight of the cushioning material while exhibiting a different cushioning performance for each part of the cushioning material.

(Embodiment 2)
11 is a perspective view of a cushioning material according to Embodiment 2. FIG. 12 is a cross-sectional view of the cushioning material taken along line XII-XII shown in FIG. The cushioning material 1B according to the present embodiment will be described below with reference to FIGS. 11 and 12. FIG. It should be noted that the cushioning material 1B according to the present embodiment differs mainly in the configuration of the deformed portion 30 from the cushioning material 1A according to the first embodiment described above.

As shown in FIGS. 11 and 12, the cushioning material 1B according to the present embodiment includes a three-dimensional structure S having a plurality of unit structures, and the three-dimensional structure S is formed by a pair of parallel curved surfaces. It is formed by a wall 10 whose contour is defined. The standard structure of the three-dimensional structure S in the cushioning material 1B according to the present embodiment is the Schwartz P structure.

The cushioning material 1B is intended to exhibit a cushioning function in the height direction (the Z direction shown in the drawing), and the three-dimensional structure S described above is sandwiched at the ends in the height direction. A pair of support portions 40 are provided as follows. Each of the pair of support portions 40 has a plate shape. Each of the pair of support portions 40 may be configured by a member separate from the three-dimensional structure S described above and assembled to the three-dimensional structure S by adhesion or the like, or may be integrally formed with the three-dimensional structure S. may be molded to The material of the pair of support portions 40 does not necessarily have to be the same as that of the three-dimensional structure S, and may be different from that of the three-dimensional structure S.

Here, in the cushioning material 1B according to the present embodiment, five unit structures U are arranged side by side in the X direction, which is the width direction, and the Y direction, which is the depth direction. Three unit structures U are arranged side by side in the direction. In FIG. 11, in order to facilitate understanding, the end surfaces located in each of the X, Y and Z directions shown in the figure are colored dark to distinguish them from other outer surfaces.

In the cushioning material 1B according to the present embodiment, a plurality of deformed portions 30 are provided at predetermined positions of one of the pair of ends of the cushioning region formed by the three-dimensional structure S located in the Y direction. is provided. The plurality of deformed portions 30 are provided so as to block specific openings among the plurality of openings of the three-dimensional structure S. As shown in FIG.

That is, when the standard of the structure of the three-dimensional structure S is the Schwartz P structure, the ends of the three-dimensional structure S are provided with a plurality of mutually independent first openings 17a positioned in a matrix and a plurality of these first openings 17a. A single grid-like second opening 17b surrounding the first opening 17a is positioned. The plurality of deformed portions 30 described above are provided in the form of covers so as to block the plurality of first openings 17a.

Here, each of the plurality of deformed portions 30 has a plate shape having a thickness in a direction intersecting the axial direction (that is, the Z direction) in which the cushioning material 1B exerts its cushioning function by receiving a load. That is, each of the plurality of deformed portions 30 extends along the XZ plane direction. Therefore, at the portion of the cushioning material 1B provided with the plurality of deformed portions 30 (that is, one end of the pair of ends located in the Y direction of the cushioning area), other parts of the cushioning material 1B Compression rigidity is increased as compared with the portion.

Therefore, even when configured in this way, it is possible to form a localized high-rigidity portion in the cushioning area, so that the cushioning material can be used for various purposes and is lightweight and has excellent cushioning performance. can do. In addition, by adopting the above configuration, the plurality of deformed portions 30 function as a kind of cover, and foreign matter can be prevented from entering the interior of the cushioning material 1B through these portions. A secondary effect is also obtained.

In addition, in the cushioning material 1B according to the present embodiment, the case where the plurality of cover-like deformed portions 30 are provided only at one end of the pair of ends positioned in the Y direction of the cushioning region is exemplified. However, at least one of the other end located in the Y direction and the pair of ends located in the X direction may be further provided with a plurality of cover-like deformed parts 30 .

13 and 14 are diagrams showing first to ninth configuration examples of the end portion of the cushioning material shown in FIG. Next, with reference to FIGS. 13 and 14, some possible configurations of the end portion of the cushioning material 1B will be described as first to ninth configuration examples. It should be noted that the cushioning performance can be variously changed by variously changing the configuration of the end portion.

In the cushioning material 1B according to the second embodiment described above, as the configuration of the end portion of the cushioning material 1B, the plurality of first openings 17a are exposed as they are (this configuration is shown in FIGS. 13 and 14). (corresponding to the first configuration example), and a configuration in which a plurality of first openings 17a are closed by providing a plate-shaped (more strictly flat plate-shaped) deformed portion 30 (this configuration corresponds to the first configuration shown in FIG. 14). 9), the shape of the deformed portion 30 can be variously changed even when the plurality of first openings 17a are closed by the deformed portion 30. FIG.

For example, as in the second to fifth configuration examples shown in FIG. 13, if the thickness of the deformed portion 30 is changed, the compression rigidity at the end portion can be varied accordingly.

That is, if the deformed portion 30b having a medium thickness as in the third configuration example is used as a reference, the deformed portion 30a having a relatively small thickness as in the second configuration example can be used to reduce the thickness of the end portion. The compressive rigidity can be made relatively low, and by not providing the deformed portion itself as in the first configuration example, the compressive rigidity of the end portion can be further reduced. On the other hand, by using the deformed portion 30c having a relatively large thickness as in the fourth configuration example, the compression rigidity of the end portion can be relatively increased.

When the thickness of the deformed portion 30 is increased or decreased in this manner, the compression rigidity is also increased or decreased accordingly. However, in this case, the weight of the shock absorber as a whole also increases or decreases according to the increase or decrease in thickness of the deformed portion 30, so simply increasing the thickness of the deformed portion 30 leads to an increase in weight. In this respect, for example, as in the fifth configuration example, by varying the thickness of the deformed portion 30d, the thickness is partially increased while the thickness is relatively reduced in another portion, thereby reducing the weight. It is also possible to relatively increase the compression rigidity while suppressing the increase in .

Further, if the shape of the deformed portion 30 is changed, for example, as in the sixth to ninth configuration examples shown in FIG. 14, the compression rigidity at the end portion can be varied accordingly.

That is, by using the deformed portion 30e having a corrugated plate-like cross section as in the sixth configuration example, the compression rigidity of the end portion can be increased compared to the case where the deformed portion itself is not provided as in the first configuration example. By forming the deformed portion 30f in the shape of a curved convex plate as in the seventh structural example, the compressive rigidity of the end portion can be further increased compared to the case of forming the deformed portion 30e in the shape of a corrugated plate in cross section as in the sixth structural example. can be done. In addition, by using the deformed portion 30g in the shape of a curved concave plate as in the eighth configuration example, the compression rigidity of the end portion is further increased compared to the case in which the deformed portion 30f in the shape of a curved convex plate is used as in the seventh configuration example. In addition, by using the flat plate-shaped deformed portion 30h as in the ninth structural example, the compression rigidity of the end portion is further increased than in the case of using the curved plate concave deformed portion 30g as in the eighth structural example. can increase

When the shape of the deformed portion 30 is changed in this manner, the compression rigidity is also changed accordingly. However, in that case, the weight of the cushioning material as a whole also changes according to the change in the shape of the deformed portion 30 . In terms of weight, the weight increases in the order of the first configuration example, the ninth configuration example, the seventh and eighth configuration examples, and the sixth configuration example.

As is clear from the above description, if the configuration of the end portion of the cushioning material is varied, for example, as in the first to ninth configuration examples described above, various variations in cushioning performance can be provided. Therefore, it becomes possible to apply the cushioning material to a wider variety of uses.

(Fourth modification)
FIG. 15 is a perspective view of a cushioning material according to a fourth modification. A cushioning material 1B1 according to a fourth modification based on the above-described second embodiment will be described below with reference to FIG.

In the above-described second embodiment, the case where all of the plurality of first openings 17a located at a predetermined end of the cushioning material 1B are closed by the cover-shaped deformed portion 30 is exemplified. It is not always necessary to block all of the plurality of first openings 17a located at the end with the deformed portion 30, and by limiting this to a part, it is also possible to variously change the cushioning performance for each part. It is possible. A fourth modified example shown below is an example thereof.

As shown in FIG. 15, in the cushioning material 1B1 according to the fourth modification, eight unit structures U are arranged side by side in the X direction, which is the width direction, and four units are arranged in the Y direction, which is the depth direction. The structural bodies U are arranged side by side, and three unit structural bodies U are arranged side by side in the Z direction, which is the height direction. In FIG. 15, for ease of understanding, the end surfaces located in each of the X, Y and Z directions shown in the figure are colored dark to distinguish them from the other outer surfaces.

Here, in the cushioning material 1B1 according to the present embodiment, the cushioning area composed of the three-dimensional structure S is divided into four sections SC1 to SC4 in the X direction. Each has a different configuration of one of the pair of ends positioned in the Y direction.

That is, at the one end of the section SC1, a total of six first openings 17a are all open, and at the one end of the section SC2, a total of four openings in the upper and lower stages are opened. One opening 17a is open, and the two middle first openings 17a are closed by the deformed portion 30. At the one end of the section SC3, the two middle first openings 17a is open, a total of four first openings 17a in the upper and lower stages are blocked by the deformed portion 30, and a total of six first openings 17a are closed at the one end of the section SC4. are all closed by the deformed portion 30 .

Therefore, by selecting various openings to be closed by the deformed portion 30 in this way, it is possible to form regions with different compression stiffness in the buffer region in a stepwise manner. Therefore, by adopting such a configuration, it is possible to provide a lightweight cushioning material with excellent cushioning performance that can be used for various purposes.

(Fifth and Sixth Modifications)
16 and 17 are perspective views of cushioning materials according to fifth and sixth modifications, respectively. 16 and 17, cushioning materials 1B2 and 1B3 according to fifth and sixth modifications based on the second embodiment described above will be described below.

As shown in FIG. 16, the cushioning material 1B2 according to the fifth modification differs from the cushioning material 1B according to the second embodiment described above, and has a height at which the cushioning material 1B2 exerts its cushioning function by receiving a load. A support portion 40 is provided only at one end in the direction (the Z direction shown in the drawing). That is, in the cushioning material 1B2 according to the fifth modification, the end face of the three-dimensional structure S having a plurality of openings is exposed as it is at the other end in the height direction.

As shown in FIG. 17, the cushioning material 1B3 according to the sixth modification differs from the cushioning material 1B according to the second embodiment described above, and has a height at which the cushioning material 1B3 exerts its cushioning function by receiving a load. The supporting portion 40 (see FIG. 11, etc.) is not provided at either of the pair of end portions in the direction (the Z direction shown in the drawing). That is, in the cushioning material 1B3 according to the sixth modification, the end surfaces of the three-dimensional structure S having a plurality of openings are exposed as they are at both ends in the height direction.

On the other hand, in the cushioning materials 1B2 and 1B3 according to the fifth and sixth modifications, as in the case of the cushioning material 1B according to the second embodiment, the Y A plurality of deformed portions 30 are provided at predetermined positions on one of the pair of ends positioned in the direction. Therefore, even when configured in this manner, as in the case of the above-described second embodiment, it is possible to provide a lightweight cushioning material with excellent cushioning performance that can be used for various purposes.

(Embodiment 3)
18 is a perspective view of a cushioning material according to Embodiment 3. FIG. 19 is a cross-sectional view of the cushioning material taken along line XIX-XIX shown in FIG. The cushioning material 1C according to the present embodiment will be described below with reference to FIGS. 18 and 19. FIG. It should be noted that the cushioning material 1C according to the present embodiment differs mainly in the configuration of the deformed portion 30 from the cushioning material 1B according to the second embodiment described above.

As shown in FIGS. 18 and 19, in the cushioning material 1C according to the present embodiment, one end of a pair of ends located in the Y direction of the cushioning region formed by the three-dimensional structure S A single deformed portion 30 is provided at a predetermined position. This single deformed portion 30 is provided so as to block a specific opening among the plurality of openings of the three-dimensional structure S. As shown in FIG.

That is, as in the second embodiment described above, at the end of the three-dimensional structure S, a plurality of mutually independent first openings 17a positioned in a matrix and the plurality of first openings 17a are provided. A single lattice-shaped second opening 17b is positioned to surround the second opening 17b. is provided.

Here, the single deformed portion 30 has a plate shape having a thickness in a direction intersecting the axial direction (that is, the Z direction) in which the cushioning material 1C exerts its cushioning function by receiving a load. That is, the single deformed portion 30 extends along the XZ plane direction. Therefore, at the portion of the cushioning material 1C provided with the single deformed portion 30 (that is, one end of the pair of ends located in the Y direction of the cushioning area), the other part of the cushioning material 1C Compression rigidity is enhanced compared to the portion of .

Therefore, even when configured in this way, it is possible to form a localized high-rigidity portion in the cushioning area, so that the cushioning material can be used for various purposes and is lightweight and has excellent cushioning performance. can do. In addition, by adopting the above configuration, the single deformed portion 30 functions as a kind of cover, and foreign matter can be prevented from entering the interior of the cushioning material through this portion. A secondary effect is also obtained.

In addition, in the cushioning material 1C according to the present embodiment, the case where the cover-like single deformed portion 30 is provided only at one end of the pair of ends positioned in the Y direction of the cushioning region is exemplified. However, at least one of the other end located in the Y direction and the pair of ends located in the X direction may be further provided with a single deformed portion 30 in the form of a cover. .

(Embodiment 4)
20 is a perspective view of a cushioning material according to Embodiment 4. FIG. 21 is a cross-sectional view of the cushioning material along line XXI-XXI shown in FIG. A cushioning material 1D according to the present embodiment will be described below with reference to FIGS. 20 and 21. FIG. It should be noted that the cushioning material 1D according to the present embodiment differs mainly in the configuration of the deformed portion 30 from the cushioning material 1B according to the second embodiment described above.

As shown in FIGS. 20 and 21, in the cushioning material 1D according to the present embodiment, one end of a pair of ends located in the Y direction of the cushioning region composed of the three-dimensional structure S A single deformed portion 30 is provided at a predetermined position. This single deformed portion 30 is provided so as to block all of the plurality of openings of the three-dimensional structure S. As shown in FIG.

That is, as in the second embodiment described above, at the end of the three-dimensional structure S, a plurality of mutually independent first openings 17a positioned in a matrix and the plurality of first openings 17a are provided. Although the surrounding grid-like single second opening 17b is located, the above-described single deformed portion 30 includes all of the plurality of first openings 17a and the single second opening 17b. is provided in the form of a cover so as to close the

Here, the single deformed portion 30 has a plate shape having a thickness in a direction intersecting the axial direction (that is, the Z direction) in which the cushioning material 1D exerts its cushioning function by receiving a load. That is, the single deformed portion 30 extends along the XZ plane direction. Therefore, at the portion of the cushioning material 1D provided with the single deformed portion 30 (that is, one end of the pair of ends located in the Y direction of the cushioning area), the other part of the cushioning material 1D Compression rigidity is enhanced compared to the portion of .

Therefore, even when configured in this way, it is possible to form a localized high-rigidity portion in the cushioning area, so that the cushioning material can be used for various purposes and is lightweight and has excellent cushioning performance. can do. In addition, by adopting the above configuration, the single deformed portion 30 functions as a kind of cover, and foreign matter can be prevented from entering the interior of the cushioning material through this portion. A secondary effect is also obtained.

Note that in the cushioning material 1D according to the present embodiment, a single cover-like deformed portion 30 is provided only at one end of a pair of ends of the cushioning region located in the Y direction. However, at least one of the other end located in the Y direction and the pair of ends located in the X direction may be further provided with a single deformed portion 30 in the form of a cover. .

(Embodiment 5)
22 is a perspective view of a cushioning material according to Embodiment 5. FIG. 23 is a perspective view of the unit structure of the cushioning material shown in FIG. 22. FIG. The cushioning material 1E according to the present embodiment will be described below with reference to FIGS. 22 and 23. FIG.

As shown in FIGS. 22 and 23, the cushioning material 1E includes a three-dimensional structure S having a plurality of unit structures U. As shown in FIGS. Each of the plurality of unit structures U has a three-dimensional shape formed by walls 10 whose outer shape is defined by a pair of parallel planes.

Here, in FIGS. 22 and 23, in order to facilitate understanding, the reference numeral U is not attached to the unit structure in a strict sense, and the space occupied by the unit structure has a rectangular parallelepiped shape. is attached to the unit space of As shown in FIG. 23, let Lx be the dimension of the unit structure U in the width direction (the X direction shown in the figure), and let Ly be the dimension of the unit structure U in the depth direction (the Y direction shown in the figure). , the dimension in the height direction (the Z direction shown in the drawing) of the unit structure U is Lz.

A plurality of unit structures U are regularly and continuously repeatedly arranged along each of the width direction, the depth direction and the height direction. In the cushioning material 1E according to the present embodiment, six unit structures U are arranged side by side in the X direction, which is the width direction, and in the Y direction, which is the depth direction. Two unit structures U are arranged side by side.

The cushioning material 1E according to the present embodiment is intended to exhibit a cushioning function in the height direction (the Z direction shown in the drawing). Therefore, the axial direction, which is the direction in which the cushioning material 1E exerts its cushioning function by receiving a load, coincides with the above-described height direction. The number of repetitions of the unit structures U in the width, depth, and height directions is not particularly limited, and two or more are arranged along at least one of these three directions. All you have to do is

As described above, each of the multiple unit structures U has a three-dimensional shape formed by the walls 10 . Therefore, the three-dimensional structure S is also configured by an assembly of these walls 10 by continuously connecting the plurality of unit structures U to each other.

Here, the three-dimensional structure S included in the cushioning material 1E has a structure in which thickness is added based on the geometric surface structure. In the cushioning material 1E according to the present embodiment, the surface structure is an octet structure, which is a type of polyhedron having a cavity inside.

The dimensions Lx, Ly, and Lz described above are not particularly limited, and various changes are possible. meets Among these Lx, Ly, and Lz, the dimension Lz in the height direction, which is the axial direction in which the cushioning function is intended to be exhibited, is defined as L1, and the remaining dimension Lx in the width direction and the dimension Ly in the depth direction When the longer of L2 is L2, if these dimensions L1 and L2 satisfy the condition of 1.1 ≤ L1/L2 ≤ 4.0, high compression rigidity can be obtained, and 0.1 ≤ L1 If the condition of /L2≦0.9 is satisfied, high deformability can be obtained due to low compressive rigidity. However, the dimensions L1 and L2 described above do not necessarily have to satisfy these conditions, and it is arbitrary whether or not they satisfy these conditions.

The cushioning material 1E has a deformed portion 30 in addition to the wall 10 described above. The deformed portion 30 is a portion that does not correspond to the wall 10 that defines the unit structure U, and is distinguished from the wall 10 .

The deformed portion 30 is localized in a buffer region (in the present embodiment, the entire buffer material 1E corresponds to the buffer region), which is a region in which the unit structures U of the three-dimensional structure S described above are arranged. is provided in Although the detailed description thereof is omitted here, the deformed portion 30 has a rectangular tubular shape as in the case of the first embodiment described above. located in the center.

The deformed portion 30 is connected to be integrated with the unit structure U of the adjacent portion of the deformed portion 30 . Therefore, the portion of the cushioning material 1E provided with the deformed portion 30 has higher compression rigidity than the other portion of the cushioning material 1E (ie, the portion not provided with the deformed portion 30). Become.

Therefore, like the cushioning material 1E according to the present embodiment, the deformed portion 30, which does not correspond to the walls 10 that define the unit structures U, is replaced with the cushioning areas of the three-dimensional structure S in which the unit structures U are arranged. By adopting a configuration in which the buffer is locally provided in the region, the cushioning material can be made lightweight and excellent in cushioning performance, as in the case of the first embodiment described above.

In addition, as a three-dimensional shape formed by walls whose outer shape is defined by a pair of parallel planes, in addition to the above-mentioned octet structure with a thickness, a cubic structure is used as a base. There are those with thickness and those with thickness based on the cubic octet structure. Therefore, in a cushioning material including a cubic structure or a cubic octet structure with a thicker three-dimensional structure as a cushioning region, the deformed portion as described above may be locally provided.

Further, as in the case of the first embodiment described above, it is naturally possible to variously change the position, shape, number, etc., of providing the deformed portion. In that case, while reducing the weight, it is possible to configure the cushioning material so that generally the same cushioning performance is obtained over the entire cushioning material, or to obtain different cushioning performance for each part of the cushioning material. be possible.

(Embodiment 6)
24 is a perspective view of a cushioning material according to Embodiment 6. FIG. The cushioning material 1F according to the present embodiment will be described below with reference to FIG. The cushioning material 1F according to the present embodiment differs mainly in the configuration of the deformed portion 30 from the cushioning material 1E according to the fifth embodiment described above.

As shown in FIG. 24, the cushioning material 1F according to the present embodiment includes a three-dimensional structure S having a plurality of unit structures, and the three-dimensional structure S has an outer shape defined by a pair of parallel planes. is formed by a wall 10 which is The standard of the structure of the three-dimensional structure S in the cushioning material 1F according to the present embodiment is the octet structure.

The cushioning material 1F is intended to exhibit a cushioning function in the height direction (the Z direction shown in the figure), and the three-dimensional structure S described above is sandwiched at the ends in the height direction. A pair of support portions 40 are provided as follows. Each of the pair of support portions 40 has a plate shape. Each of the pair of support portions 40 may be configured by a member separate from the three-dimensional structure S described above and assembled to the three-dimensional structure S by adhesion or the like, or may be integrally formed with the three-dimensional structure S. may be molded to

Here, in the cushioning material 1F according to the present embodiment, five unit structures U are arranged side by side in the X direction, which is the width direction, and the Y direction, which is the depth direction. Two unit structures U are arranged side by side in the direction. In FIG. 24, in order to facilitate understanding, the end surfaces positioned in each of the X, Y and Z directions shown in the figure are given a dark color to distinguish them from the other outer surfaces.

In the cushioning material 1F according to the present embodiment, a plurality of deformed portions 30 are provided at predetermined positions of one of a pair of ends of the cushioning region formed by the three-dimensional structure S, which are positioned in the Y direction. is provided. The plurality of deformed portions 30 are provided so as to block specific openings among the plurality of openings of the three-dimensional structure S. As shown in FIG.

That is, when the standard of the structure of the three-dimensional structure S is the octet structure, the ends of the three-dimensional structure S are provided with a plurality of mutually independent openings 17 arranged in a diagonal grid pattern. . The plurality of deformed portions 30 described above are provided like covers so as to block some of the openings 17 .

Here, each of the plurality of deformed portions 30 has a plate shape having a thickness in a direction intersecting the axial direction (that is, the Z direction) in which the cushioning material 1F exerts its cushioning function by receiving a load. That is, each of the plurality of deformed portions 30 extends along the XZ plane direction. Therefore, at a portion of the cushioning material 1F where the plurality of deformed portions 30 are provided (that is, one end of a pair of ends located in the Y direction of the cushioning area), other parts of the cushioning material 1F Compression rigidity is increased as compared with the portion.

Therefore, even when configured in this way, it is possible to form a localized high-rigidity portion in the cushioning area, so that the cushioning material can be used for various purposes and is lightweight and has excellent cushioning performance. can do. In addition, by adopting the above configuration, the plurality of deformed portions 30 function as a kind of cover, and foreign matter can be prevented from entering the interior of the cushioning material 1F through these portions. A secondary effect is also obtained.

In addition, in the cushioning material 1F according to the present embodiment, the case where the plurality of cover-like deformed portions 30 are provided only at one end of the pair of ends positioned in the Y direction of the cushioning region is illustrated. However, at least one of the other end located in the Y direction and the pair of ends located in the X direction may be further provided with a plurality of cover-like deformed parts 30 .

Further, as shown in the above-described second to fourth embodiments and the above-described fourth to sixth modifications, any one of the plurality of openings located at the end of the cushioning material is provided with a cover-like deformed portion. In addition, when the deformed portion is provided, the thickness and shape of the cover-like deformed portion can be changed in various ways.

(Embodiment 7)
FIG. 25 is a perspective view of a shoe sole according to Embodiment 7 and a shoe having the same. 26 is a side view of the sole shown in FIG. 25; FIG. FIG. 27 is a schematic diagram showing the configuration of the sole shown in FIG. 25, viewed from the direction of arrow XXVII in FIG. 28 is a perspective view of the cushioning material of the shoe sole shown in FIG. 25 as viewed in the direction of arrow XXVIII in FIG. Below, a shoe sole 110A according to the present embodiment and a shoe 100 having the same will be described with reference to FIGS. 25 to 28. FIG. The shoe sole 110A according to the present embodiment includes a cushioning material 1G having a configuration similar to the cushioning material 1B according to the second embodiment described above and the cushioning material 1B1 according to the fourth modification described above. is.

As shown in FIG. 25, the shoe 100 has a sole 110A and an upper 120. As shown in FIG. The sole 110A is a member that covers the sole of the foot and has a substantially flat shape. The upper 120 has a shape that covers at least the entire instep side of the inserted foot, and is positioned above the sole 110A.

The upper 120 has an upper body 121 , a tongue 122 and a shoelace 123 . Among them, the shoe tongue 122 and the shoe lace 123 are both fixed or attached to the upper body 121 .

The upper part of the upper body 121 is provided with an upper opening through which the upper part of the ankle and part of the instep are exposed. On the other hand, in the lower part of the upper body 121, for example, a lower opening covered by the sole 110A is provided. is formed.

The shoe tongue 122 is fixed to the upper body 121 by sewing, welding, adhesion, or a combination thereof so as to cover the part of the upper opening provided in the upper body 121 that exposes part of the instep. . For the upper body 121 and the shoe tongue 122, for example, woven fabric, knitted fabric, non-woven fabric, synthetic leather, resin, or the like is used, and double raschel warp knitted fabric woven with polyester thread is used for shoes that require particularly breathability and lightness. used.

The shoelace 123 is formed of a string-like member for pulling together in the foot width direction the peripheral edge of the upper opening that exposes a part of the instep provided in the upper body 121, and is provided at the peripheral edge of the upper opening. is inserted through a plurality of holes provided. By tightening the shoelace 123 while the foot is inserted into the upper body 121, the upper body 121 can be brought into close contact with the foot.

As shown in FIGS. 25 to 27, the sole 110A has a midsole 111, an outsole 112, and a cushioning material 1G. Midsole 111 is positioned above sole 110A and joined to upper 120 . The outsole 112 has a ground-contacting surface 112a (see FIG. 26) on its lower surface and is positioned below the sole 110A. The cushioning material 1G is interposed at a predetermined position between the midsole 111 and the outsole 112. As shown in FIG.

The midsole 111 preferably has moderate strength and excellent cushioning properties. From this viewpoint, the midsole 111 can be made of, for example, a foam material made of resin or rubber, which is particularly preferable. The material may be a thermoplastic resin such as ethylene-vinyl acetate copolymer (EVA), a thermosetting resin such as polyurethane (PU), or a foam material made of butadiene rubber.

The outsole 112 preferably has excellent abrasion resistance and grip properties, and from this point of view, the outsole 112 can be made of rubber, for example. The ground contact surface 112a, which is the lower surface of the outsole 112, may be provided with a tread pattern from the viewpoint of enhancing the above-described grip performance.

As shown in FIGS. 26 and 27, the sole 110A extends along the front-rear direction (horizontal direction in FIG. 26, vertical direction in FIG. 27), which is the long axis direction in plan view. It is divided into a forefoot portion R1 that supports the sole and the stepping portion, a middle foot portion R2 that supports the rest portion of the foot, and a rear foot portion R3 that supports the heel portion of the foot. Further, as shown in FIG. 27, the sole 110A extends along the foot width direction, which is the direction that intersects the longitudinal direction in plan view, on the midline side of the anatomically correct position of the foot (that is, the midline position). side of the foot (the side closest to the midline), and the side of the foot opposite to the midline in the anatomical upright position (that is, the side far from the midline) of the foot. side portion (the portion on the S2 side shown in the drawing).

As shown in FIG. 27, the portion on the inner foot side (S1 side) of the forefoot portion R1 of the sole 110A includes a portion Q1 that supports the hallux of the foot. In addition, a portion Q2 that supports the little toe of the foot is included in a portion on the outer foot side (S2 side) of the forefoot portion R1 of the sole 110A. On the other hand, a portion Q3 that supports the calcaneus of the foot is included in the rear foot portion R3 that straddles the inner foot side (S1 side) and the outer foot side (S2 side) of the sole 110A.

Here, in the shoe 100 according to the present embodiment, a notch portion having a predetermined shape is provided in the midsole 111, and the cushioning material 1G is accommodated in the notch portion to accommodate the cushioning material 1G. is fixed in a state of being sandwiched between the midsole 111 and the outsole 112 in the thickness direction of the sole 110A.

Specifically, as shown in FIGS. 26 and 27, the midsole 111 has the above-described cutouts at positions corresponding to the portion near the rearfoot portion R3 of the middle foot portion R2 and the entire portion of the rearfoot portion R3. A cutout portion is formed, and a cushioning material 1G having a substantially D-shaped outer shape in a plan view is arranged so as to fill the cutout portion. As a result, of the edges of the sole 110A, part of the end portion of the cushioning material 1G is the rear edge portion of the inner foot side of the middle foot portion R2, the inner foot side edge portion of the rear foot portion R3, and the rear edge portion of the rear foot portion R3. They are located at the rear edge of the foot portion R3, the outer foot side edge of the rear foot portion R3, and the outer foot rear edge of the middle foot portion R2. In addition, in FIG. 27, for easy understanding, the region where the cushioning material 1G is arranged when the sole 110A is viewed from above is given a light color. That is, the cushioning material 1G has a cushioning area not only on the edge of the sole 110A but also on the inside thereof.

As shown in FIGS. 25, 26 and 28, the cushioning material 1G has the Schwartz P structure as the standard of the three-dimensional structure S forming the cushioning region. Therefore, as shown in FIG. 28, at the end of the cushioning material 1G, as described above, a plurality of mutually independent first openings 17a positioned in a matrix and these plurality of first openings 17a are provided. A surrounding grid-like single second opening 17b is located. In the cushioning material 1G, a plurality of unit structures U are arranged in both the width direction and the depth direction (that is, the horizontal direction), but only one unit structure is arranged in the height direction (that is, the Z direction). there is

The material of the cushioning material 1G is not particularly limited as described in the first embodiment, but may be, for example, a resin material or a rubber material, and particularly preferably ethylene-vinyl acetate. Thermoplastic resins such as copolymers (EVA), thermosetting resins such as polyurethane (PU), butadiene rubber, and the like can be used. Polymer compositions such as olefin-based polymers, amide-based polymers, ester-based polymers, urethane-based polymers, styrene-based polymers, and acrylic polymers can also be used.

The thickness of the walls 10 forming the three-dimensional structure S of the cushioning material 1G is not particularly limited, but is preferably 0.1 mm or more and 10 mm or less, more preferably 1 mm or more and 5 mm or less. be done.

Here, as shown in FIG. 27, the end portion of the cushioning material 1G located along the edge portion of the sole 110A is divided into three sections SC1 to SC3 due to the difference in construction. More specifically, the segment SC1 corresponds to the rear edge of the middle foot portion R2 on the inner foot side and the front edge of the rear foot portion R3 on the inner foot side. Corresponding to the rear edge of the foot portion R3 on the inner foot side, the area SC3 corresponds to the edge of the rear foot portion R3 on the outer foot side and the rear edge of the middle foot portion R2 on the outer foot side. Yes.

As shown in FIG. 28, in the area SC1, each of the plurality of first openings 17a positioned at the end of the cushioning material 1G is formed by a flat deformed portion 30h (see the ninth configuration example shown in FIG. 14). blocked by Further, in the area SC2, each of the plurality of first openings 17a positioned at the end of the cushioning material 1G is closed by a curved convex plate-shaped deformed portion 30f (see the seventh configuration example shown in FIG. 14). ing. On the other hand, in the area SC3, each of the plurality of first openings 17a located at the end of the cushioning material 1G is exposed as it is without being blocked. In FIG. 26, only the end face of the end portion of the cushioning material 1G excluding the support portion 40 is given a dark color for easy understanding.

Therefore, by configuring in this way, the compressive rigidity in the area SC1 of the cushioning material 1G is higher than the compressive rigidity in each of the areas SC2 and SC3 of the cushioning material 1G, and the compressive rigidity in the area SC2 of the cushioning material 1G is , is higher than the compression stiffness in the area SC3 of the cushioning material 1G. That is, the compression stiffness at the end of the cushioning material 1G can be changed for each zone, and the compression stiffness can be relatively increased in the order of zone SC3, zone SC2, and zone SC1.

Therefore, in the sole 110A, around the portion Q3 that supports the calcaneus of the foot, the compression stiffness of the rear portion of the inner foot side of the metatarsal portion R2 and the portion of the rear foot portion R3 of the inner foot side is relatively high. , the compressive rigidity of the rear portion of the middle foot portion R2 on the side of the outer foot and the portion of the rear foot portion R3 on the side of the outer foot become relatively low.

By configuring in this way, it is possible to suppress the occurrence of so-called overpronation, in which the heel portion collapses inward more than necessary at the time of landing. That is, when a person who is prone to overpronation wears the shoe 100 having the sole 110A according to the present embodiment, the rear part on the inner foot side of the metatarsal region R2 and the inner side of the hindfoot region R3. Since it is possible to stably support the sole in the foot-side portion, the pressure acting on the midsole 111 can be dispersed, and excessive deformation occurs in the midsole 111. can be suppressed, and as a result, the occurrence of overpronation can be suppressed.

In addition, with this configuration, as described above, it is possible to stably support the sole of the foot at the rear portion of the middle foot portion R2 on the inner foot side and the inner foot portion of the rear foot portion R3. Accordingly, the pressure acting on the midsole 111 can be dispersed, and excessive deformation of the midsole 111 can be suppressed. By wearing the shoe 100 having the sole 110A, it is possible to prevent the burden from being concentrated on the inner side of the foot when landing.

On the other hand, with the configuration as described above, the cushioning material 1G deforms more greatly at the rear portion of the middle foot portion R2 on the outer foot side and the portion on the outer foot side of the rear foot portion R3 at the time of landing. It is possible to greatly reduce the impact on the sole of the foot at times.

Therefore, the sole 110A according to the present embodiment and the shoe 100 having the sole 110A are particularly suitable for people who are prone to overpronation or people with flat foot valgus, and have excellent stability when landing. , a shoe sole having a good feel on the foot and a light weight, and a shoe having the same.

The cushioning material 1G may be arranged so that its height direction (the Z direction shown in the figure), which is the axial direction described above, is orthogonal to the ground contact surface 112a of the sole 110A. With this configuration, the load applied to the sole 110A from the sole and the ground when landing is absorbed by the large amount of deformation of the cushioning material 1G, and the load from the sole 110A to the sole is absorbed. The applied load is reduced, resulting in high cushioning performance.

(Seventh and eighth modifications)
29 and 30 are perspective views of shock-absorbing materials provided in shoe soles according to seventh and eighth modifications, respectively. 29 and 30, cushioning materials 1G1 and 1G2 provided in shoe soles according to seventh and eighth modifications based on the above-described seventh embodiment will be described. The soles according to these seventh and eighth modifications are provided in the shoe 100 according to the seventh embodiment instead of the sole 110A described above.

As shown in FIG. 29, the cushioning material 1G1 provided in the shoe sole according to the seventh modification is similar to the cushioning material 1G provided in the shoe sole 110A according to the seventh embodiment described above. It has a substantially D-shaped outer shape in a plan view and is approximately the same size as the cushioning material 1G so as to be arranged in the portion near the rear foot portion R3 of the middle foot portion R2 and all the portions of the rear foot portion R3. is doing. On the other hand, in the cushioning material 1G1, unlike the cushioning material 1G described above, two unit structural bodies U are arranged in the height direction (that is, the Z direction).

Here, the end portion of the cushioning material 1G1 located along the edge of the shoe sole is divided into four areas SC1 to SC4 due to the difference in construction. More specifically, the area SC1 corresponds to the inner foot side rear edge of the middle foot portion R2, and the area SC2 corresponds to the inner foot side front edge of the rear foot portion R3. The area SC3 corresponds to the inner foot rear edge of the rear foot R3, and the area SC4 corresponds to the outer foot edge of the rear foot R3 and the outer foot of the middle foot R2. It corresponds to the rear edge of the side.

In the area SC1, each of the plurality of first openings 17a positioned at the end of the cushioning material 1G1 is exposed as it is without being blocked. On the other hand, in the area SC2, each of the plurality of first openings 17a located at the end of the cushioning material 1G1 is closed by a flat deformed portion 30h (see the ninth configuration example shown in FIG. 14). . Further, in the area SC3, each of the plurality of first openings 17a located at the end of the cushioning material 1G1 is closed by a curved convex plate-shaped deformed portion 30f (see the seventh configuration example shown in FIG. 14). ing. Furthermore, in the area SC4, each of the plurality of first openings 17a located at the end of the cushioning material 1G1 is exposed as it is without being blocked.

Therefore, by configuring in this way, the compressive stiffness in the area SC2 of the cushioning material 1G1 is higher than the compressive stiffness in the areas SC1, SC3 and SC4 of the cushioning material 1G1, and the compressive stiffness in the area SC3 of the cushioning material 1G1 The compressive rigidity is higher than the compressive rigidity in the areas SC1 and SC4 of the cushioning material 1G1, and the compressive rigidity in the area SC1 of the cushioning material 1G1 and the compressive rigidity in the area SC4 of the cushioning material 1G1 are approximately the same. That is, the compression stiffness at the end of the cushioning material 1G1 can be changed for each zone, and the compression stiffness can be relatively increased in the order of zones SC1, SC4, SC3, and SC2.

Therefore, in the sole, around the portion Q3 that supports the calcaneus of the foot, the compression rigidity of the portion on the inner foot side of the rear foot portion R3 is relatively high, and the compression rigidity on the inner foot side of the metatarsal portion R2 The compression rigidity of the front portion, the rear portion of the middle foot portion R2 on the outside foot side, and the portion of the rear foot portion R3 on the outside foot side is relatively low.

Therefore, even when configured in this manner, substantially the same effects as those described in the above-described seventh embodiment can be obtained, and it is particularly suitable for people who are prone to overpronation or people with flat valgus feet. It is possible to provide a shoe sole which is excellent in stability at the time of landing, has a good contact with the foot, and is light in weight, and a shoe having the same.

As shown in FIG. 30, in the cushioning material 1G2 provided in the shoe sole according to the eighth modification, the plurality of first openings 17a located in the upper part of the section SC2 are closed by the flat deformed portion 30h. The structure differs from that of the cushioning material 1G1 provided in the shoe sole according to the seventh modification described above only in that the cushioning material 1G1 is exposed as it is.

In the case of such a configuration, the deformed plate-like portion 30h is provided in the lower stage of the section SC2, so that the compressive rigidity in the section SC2 is relatively increased, while the plurality of sections located in the upper stage of the section SC2 are provided. Since the first opening 17a of is open, the compressive rigidity of the upper portion of the section SC2 is relatively lowered. Therefore, by adopting this configuration, it is possible to stably support the sole of the foot in the inner foot side portion of the rear foot portion R3, and it is also possible to improve the contact with the foot.

(Embodiment 8)
FIG. 31 is a schematic diagram showing the configuration of a shoe sole according to Embodiment 8. FIG. Below, the shoe sole 110B according to the present embodiment and the cushioning materials 1G and 1H provided therein will be described with reference to FIG. In addition, sole 110B according to the present embodiment is provided in shoe 100 according to Embodiment 7 instead of sole 110A described above.

As shown in FIG. 31, a sole 110B further includes a cushioning material 1H in addition to the cushioning material 1G included in the sole 110A according to the seventh embodiment. The cushioning material 1G is arranged in the portion near the rear foot portion R3 of the middle foot portion R2 and all the portions of the rear foot portion R3, as in the case of the seventh embodiment described above. On the other hand, the cushioning material 1H is arranged in a portion of the forefoot portion R1 closer to the middle foot portion R2 and a portion of the middle foot portion R2 closer to the front foot portion R1.

The midsole 111 is formed with notches at positions corresponding to a portion of the forefoot portion R1 near the middle foot portion R2 and a portion of the middle foot portion R2 near the forefoot portion R1. A cushioning material 1H having a substantially rectangular outer shape in a plan view is arranged in the . As a result, part of the end portion of the cushioning material 1H is generally the rear edge on the inner foot side of the forefoot portion R1 and the front edge on the outer foot side of the metatarsal portion R2, among the edges of the sole 110B. and the rear edge of the outer foot side of the forefoot portion R1. In FIG. 31, for ease of understanding, areas where the cushioning materials 1G and 1H are arranged when the sole 110B is viewed from above are colored lightly. That is, like the cushioning material 1G, the cushioning material 1H has a cushioning area not only at the edge of the sole 110B described above but also at the inner area thereof.

Here, the end portion of the cushioning material 1H located along the edge portion of the sole 110B is divided into two areas SC4 and SC5 due to the difference in their construction. More specifically, the area SC4 corresponds to the inner foot side rear edge of the forefoot portion R1, and the area SC5 corresponds to the outer foot side front edge of the middle foot portion R2 and the forefoot portion. It corresponds to the rear edge on the outside foot side of R1. Note that both the section SC4 and the section SC5 have the same configuration as the section SC2 of the cushioning material 1G.

Therefore, in the sole 110B, around the part Q1 that supports the big toe, the compression rigidity of the rear part of the forefoot part R1 on the inner foot side becomes relatively high, and the little toe is supported. Around the region Q2, the compression rigidity of the rear portion of the forefoot portion R1 on the outside foot side and the front portion of the middle foot portion R2 on the outside foot side is relatively high.

With this configuration, it is possible not only to stably support the sole of the foot in the rear portion of the middle foot portion R2 on the inner foot side and in the portion of the rear foot portion R3 on the inner foot side, but also to support the front foot. It is possible to stably support the sole at the rear part of the inner foot side of the part R1, the rear part of the forefoot part R1 on the outer foot side, and the front part of the outer foot side of the metatarsal part R2. Therefore, even more than the seventh embodiment described above, it is particularly suitable for people who are prone to overpronation and people with flat feet, excellent stability at the time of landing, good foot contact, and light weight. It is possible to provide a shoe sole and a shoe having the same.

(Embodiment 9)
32 is a schematic diagram showing the configuration of the sole according to the ninth embodiment. FIG. Hereinafter, a shoe sole 110C according to the present embodiment and a cushioning material 1I provided therein will be described with reference to FIG. Note that the sole 110C according to the present embodiment is provided in the shoe 100 according to the seventh embodiment instead of the sole 110A described above.

As shown in FIG. 32, a shoe sole 110C includes a cushioning material 1I having a structure different from that of the cushioning material 1G included in the shoe sole 110A according to the seventh embodiment. Specifically, the cushioning material 1I is arranged over the entire area of the sole 110C (that is, all of the forefoot portion R1, middle foot portion R2, and rearfoot portion R3) when viewed from above. In FIG. 32, for ease of understanding, the region where the cushioning material 1I is arranged when the sole 110C is viewed from above is given a light color. That is, the cushioning material 1I has a cushioning area not only on the edge of the sole 110C, which will be described later, but also on the inner area thereof.

Here, the end portion of the cushioning material 1I located along the edge portion of the sole 110C is divided into five sections SC1 to SC5 due to differences in their configurations. More specifically, the area SC1 corresponds to the edge of the forefoot R1 on the inner foot side and the edge of the middle foot R2 excluding the rear portion on the inner foot side, and the area SC2 is The area SC3 corresponds to the rear edge of the inner foot side of the middle foot portion R2 and the front edge of the inner foot side of the rear foot portion R3. The area SC4 corresponds to the edge of the rear foot R3 on the outside foot side and the rear edge of the middle foot R2 on the outside foot side, and the area SC5 corresponds to the middle foot. It corresponds to the edge portion of the foot portion R2 excluding the rear portion on the outside foot side and the edge portion on the outside foot side of the forefoot portion R1.

Section SC1, section SC3, and section SC5 all have the same configuration as section SC2 of cushioning material 1G described above, and section SC2 has the same configuration as section SC1 of cushioning material 1G described above. , and the section SC4 has the same configuration as the section SC3 of the cushioning material 1G described above.

Therefore, in the sole 110C, around the part Q1 that supports the big toe, the compression rigidity of the rear part of the forefoot part R1 on the inner foot side is relatively high, and the little toe is supported. Around region Q2, the rear part of the forefoot part R1 on the side of the outer foot and the front part of the middle foot part R2 on the side of the outer foot have relatively high compression rigidity, and support the calcaneus of the foot. Around Q3, the compression rigidity of the inner foot side portion of the rear foot portion R3 is relatively high.

Therefore, even when configured in this way, as in the case of the eighth embodiment described above, it is particularly suitable for people who are prone to overpronation or people with flat valgus feet, and the stability at the time of landing is excellent. , a shoe sole having a good feel on the foot and a light weight, and a shoe having the same.

(Embodiment 10)
FIG. 33 is a schematic diagram showing the configuration of the sole according to the tenth embodiment. A shoe sole 110D according to the present embodiment and a cushioning material 1J provided therein will be described below with reference to FIG. A sole 110D according to the present embodiment is provided in the shoe 100 according to the seventh embodiment instead of the sole 110A described above.

As shown in FIG. 33, a sole 110D includes a cushioning material 1J having a structure different from that of the cushioning material 1G included in the sole 110A according to the seventh embodiment. Specifically, the cushioning material 1J is arranged over the entire region of the sole 110D (that is, all of the forefoot portion R1, middle foot portion R2, and rearfoot portion R3) when viewed from above. In FIG. 33, for ease of understanding, the region where the cushioning material 1J is arranged when the sole 110D is viewed from above is given a light color. That is, the cushioning material 1J has a cushioning area not only on the edge of the sole 110D, which will be described later, but also on the inner area thereof.

Here, the end portion of the cushioning material 1J positioned along the edge portion of the sole 110D is divided into three sections SC1 to SC3 due to the difference in their configurations. More specifically, the area SC1 corresponds to the inner foot side edge of the forefoot portion R1, the inner foot side edge of the middle foot portion R2, and the inner foot side edge of the rear foot portion R3. The area SC2 corresponds to the edge of the rear foot portion R3 on the outside foot side, the edge of the middle foot portion R2 on the outside foot side, and the rear edge of the forefoot portion R1 on the outside foot side, The area SC3 corresponds to the edge portion of the forefoot portion R1 excluding the rear portion on the side of the outer foot.

Section SC1 and section SC3 both have the same configuration as section SC3 of cushioning material 1G described above, and section SC2 has the same configuration as section SC1 of cushioning material 1G described above. .

Therefore, in the sole 110D, around the portion Q3 that supports the calcaneus of the foot, the compression stiffness of the rear portion of the outer foot side of the metatarsal portion R2 and the portion of the rear foot portion R3 of the outer foot side is relatively high. around the part Q2 that supports the little toe, the compression stiffness of the rear part of the forefoot part R1 on the outer foot side and the front part of the middle foot part R2 on the outer foot side is relatively get higher In addition, the compressive rigidity of the portion on the inner foot side of the sole 110D is relatively low.

By configuring in this way, it is possible to suppress the occurrence of so-called underpronation, in which the heel portion is not sufficiently collapsed inward at the time of landing. That is, by wearing the shoe 100 having the sole 110D according to the present embodiment, a person who is prone to underpronation can stably support the sole of the foot on the outer foot side. Accordingly, it is possible to disperse the pressure acting on the midsole 111, thereby suppressing excessive deformation of the midsole 111 and, as a result, suppressing the occurrence of underpronation.

In addition, by configuring in this way, it is possible to stably support the sole in the portion on the side of the outer foot as described above, and along with this, it is possible to disperse the pressure acting on the midsole 111. As a result, the occurrence of excessive deformation in the midsole 111 can be suppressed. It is possible to avoid concentration of the burden on the part on the foot side.

On the other hand, with the above configuration, the cushioning material 1G is deformed more greatly when landing on the inner foot side, so that it is possible to greatly reduce the impact applied to the sole when landing.

Therefore, by using the sole 110D according to the present embodiment and the shoe 100 having the sole 110D, it is particularly suitable for people who tend to develop underpronation and those who have bow legs, and is excellent in stability when landing. It is possible to provide a shoe sole that feels good on the foot and is light in weight, and a shoe equipped with the same.

(Embodiment 11)
FIG. 34 is a schematic diagram showing the configuration of the sole according to the eleventh embodiment. Below, with reference to FIG. 34, a shoe sole 110E according to the present embodiment and a cushioning material 1K provided therein will be described. In addition, sole 110E according to the present embodiment is provided in shoe 100 according to Embodiment 7 instead of sole 110A described above.

As shown in FIG. 34, a sole 110E includes a cushioning material 1K having a structure different from that of the cushioning material 1G included in the sole 110A according to the seventh embodiment. Specifically, the cushioning material 1K is arranged over the entire region of the sole 110E (that is, all of the forefoot portion R1, middle foot portion R2, and rearfoot portion R3) when viewed from above. In FIG. 34, for ease of understanding, the area where the cushioning material 1K is arranged when the sole 110E is viewed from above is given a light color. That is, the cushioning material 1K has a cushioning area not only on the edge of the sole 110E, which will be described later, but also on the inside thereof.

Here, unlike the above-described cushioning material 1G, the cushioning material 1K does not have a deformed portion at the end located along the edge of the sole 110E, and the cushioning material 1K is more flexible when viewed from above. It has a deformed portion 30 at the inner position. The deformed portion 30 is locally provided in a buffering region composed of the unit structures U of the buffering material 1K, and more specifically, the deformed portion 30 is evenly distributed over the entire buffering material 1K. , they are arranged in a double annular shape with one positioned inside the other when viewed from above.

The deformed portion 30 has a plate shape having a thickness in a direction intersecting the axial direction in which the cushioning material 1K exerts its cushioning function by receiving a load (that is, the direction orthogonal to the paper surface in FIG. 34). It reaches both ends of the cushioning material 1K along the direction. The deformed portion 30 is connected so as to be integrated with the unit structure U adjacent thereto. Therefore, in the portion of the cushioning material 1K where the deformed portion 30 is provided, the compressive rigidity is increased compared to other portions of the cushioning material 1K.

In this way, the shoe sole 110E including the cushioning material 1K and the shoe 100 including the cushioning material 1K having the deformed portion 30 locally provided in the cushioning area where the unit structures U are arranged, , soles that are lightweight and have excellent cushioning performance, and shoes equipped with the same. In particular, by adopting the above configuration, it is possible to evenly provide the locally provided deformed portion 30 over the entire cushioning material 1K, so that the overall cushioning performance of the cushioning material 1K can be substantially the same while reducing the weight. can be obtained.

In the present embodiment, if the deformed portion 30 is provided only on the lower layer side without providing the deformed portion 30 on the upper layer side of the cushioning material 1K, the compressive rigidity is maintained high and the shoe sole feels good on the foot. and a shoe comprising the same. On the other hand, in the present embodiment, if the deformed portion 30 is provided only on the upper layer side without providing the deformed portion 30 on the lower layer side of the cushioning material 1K, the warped shape of the midsole of the forefoot portion R1 during running is maintained. As a result, the workload of the ankle joint at the time of kicking can be reduced, and an energy-saving sole and a shoe having the same can be obtained.

(Embodiment 12)
FIG. 35 is a schematic diagram showing the configuration of the sole according to the twelfth embodiment. Below, the sole 110F according to the present embodiment and the cushioning material 1L provided therein will be described with reference to FIG. In addition, sole 110F according to the present embodiment is provided in shoe 100 according to Embodiment 7 instead of sole 110A described above.

As shown in FIG. 35, a sole 110F includes a cushioning material 1L having a structure different from that of the cushioning material 1G included in the sole 110A according to the seventh embodiment. Specifically, the cushioning material 1L is arranged over the entire region of the sole 110F (that is, all of the forefoot portion R1, middle foot portion R2, and rearfoot portion R3) when viewed from above. In FIG. 35, for ease of understanding, the region where the cushioning material 1L is arranged when the sole 110F is viewed from above is given a light color. That is, the cushioning material 1L has a cushioning area not only on the edge of the sole 110F, which will be described later, but also on the inner area thereof.

Here, unlike the cushioning material 1G described above, the cushioning material 1L is deformed not only at the end located along the edge of the sole 110F, but also at the inner position of the cushioning material 1L when viewed from above. It has a part 30 . The deformed portion 30 is locally provided in a buffering region composed of the unit structures U of the cushioning material 1L, and more specifically, the deformed portion 30 is evenly positioned over the entire cushioning material 1L. , it has a grid-like shape in a plan view that reaches the end of the sole 110F described above.

The deformed portion 30 has a plate shape having a thickness in a direction intersecting the axial direction in which the cushioning material 1L exerts its cushioning function by receiving a load (that is, the direction orthogonal to the paper surface in FIG. 35). It reaches both ends of the cushioning material 1L along the direction. The deformed portion 30 is connected so as to be integrated with the unit structure U adjacent thereto. Therefore, the portion of the cushioning material 1L provided with the deformed portion 30 has a higher compressive rigidity than the other portions of the cushioning material 1L.

Thus, the shoe sole 110F including the cushioning material 1L and the shoe 100 including the cushioning material 1L in which the deformed portion 30 is locally provided in the cushioning area where the unit structures U are arranged, , soles that are lightweight and have excellent cushioning performance, and shoes equipped with the same. In particular, by adopting the above configuration, it is possible to evenly provide the deformed portion 30 that is locally provided throughout the entire cushioning material 1L, so that while reducing the weight, the cushioning performance is generally the same throughout the entire cushioning material 1L. can be obtained.

In the present embodiment, if the deformed portion 30 is provided only on the lower layer side without providing the deformed portion 30 on the upper layer side of the cushioning material 1L, the compressive rigidity is maintained high and the shoe sole feels good on the foot. and a shoe comprising the same. On the other hand, in the present embodiment, if the deformed portion 30 is provided only on the upper layer side without providing the deformed portion 30 on the lower layer side of the cushioning material 1L, the warped shape of the midsole of the forefoot portion R1 during running is maintained. As a result, the workload of the ankle joint at the time of kicking can be reduced, and an energy-saving sole and a shoe having the same can be obtained.

(Embodiment 13)
FIG. 36 is a schematic diagram showing the configuration of the sole according to the thirteenth embodiment. 37 is a perspective view of the cushioning material of the shoe sole shown in FIG. 36 as viewed in the direction of arrow XXXVII in FIG. 36. FIG. FIG. 38 is a schematic diagram showing an arrangement example of the unit structures of the cushioning material in the shoe sole shown in FIG. A shoe sole 110G according to the present embodiment and a cushioning material 1M provided therein will be described below with reference to FIGS. 36 to 38. FIG. A shoe sole 110G according to the present embodiment is provided in the shoe 100 according to the seventh embodiment instead of the shoe sole 110A described above.

As shown in FIG. 36, a sole 110G includes a cushioning material 1M having a structure different from that of the cushioning material 1G included in the sole 110A according to the seventh embodiment. Specifically, the cushioning material 1M is generally formed in a substantially U shape in plan view, and is arranged in a notch portion of the midsole 111 formed in the same shape as this. As a result, the cushioning material 1M generally includes the inner foot side edge of the middle foot portion R2, the inner foot side edge of the rear foot portion R3, the rear side edge of the rear foot portion R3, and the rear foot portion R3. It is arranged along the outer foot side edge and the outer foot side edge of the middle foot portion R2. In FIG. 36, for ease of understanding, the region where the cushioning material 1M is arranged when the sole 110G is viewed from above is given a light color. That is, the cushioning material 1M has a cushioning area not only on the edge of the sole 110M described above but also on part of the inner area thereof.

As shown in FIG. 37, in the cushioning material 1M, the octet structure is the standard of the three-dimensional structure S that constitutes the cushioning area. Therefore, as described above, a plurality of mutually independent openings 17 arranged in a diagonal lattice are positioned at the end of the cushioning material 1M. In the cushioning material 1M, a plurality of unit structures U are arranged in both the width direction and the depth direction (that is, the horizontal direction), but only one unit structure is arranged in the height direction (that is, the Z direction). there is

Here, as shown in FIG. 36, the end portion of the cushioning material 1M located along the edge portion of the sole 110G is divided into three sections SC1 to SC3 due to the difference in their configurations. More specifically, the area SC1 corresponds to the edge of the middle foot on the inner foot side of the middle foot R2, and the area SC2 corresponds to the rear edge of the middle foot on the inner foot side of the middle foot R2, and The area SC3 corresponds to the inner foot side edge of the rear foot portion R3, and the area SC3 includes the outer foot side edge of the rear foot portion R3 and the outer foot side front portion of the middle foot portion R2. corresponds to the department.

As shown in FIG. 37, in the area SC1, a plurality of rhombus-shaped openings 17 horizontally adjacent to each other at the end of the cushioning material 1M are alternately formed with flat plate-shaped deformed portions 30h (see FIG. 14). (see the ninth configuration example shown). Further, in the area SC2, the plurality of rhombus-shaped openings 17 positioned adjacent to each other in the horizontal direction at the end of the cushioning material 1M are all closed by the plate-like deformed portion 30h. On the other hand, in the area SC3, the plurality of openings 17 positioned at the ends of the cushioning material 1M are exposed without being blocked. In FIG. 37, only the deformed portion 30 of the cushioning material 1M is given a dark color for easy understanding.

Therefore, by configuring in this way, the compressive rigidity in the area SC2 of the cushioning material 1M is higher than the compressive rigidity in the areas SC1 and SC3 of the cushioning material 1M, and the compressive rigidity in the area SC1 of the cushioning material 1M is , is higher than the compression stiffness in the area SC3 of the cushioning material 1M. That is, the compressive stiffness at the end of the cushioning material 1M can be changed for each zone, and the compressive stiffness can be relatively increased in the order of zone SC3, zone SC1, and zone SC2.

Therefore, in the sole 110G, around the portion Q3 that supports the calcaneus of the foot, the compression rigidity of the rear portion of the inner foot side of the metatarsal portion R2 and the portion of the rear foot portion R3 of the inner foot side is relatively high. , the compressive rigidity of the rear portion of the middle foot portion R2 on the side of the outer foot and the portion of the rear foot portion R3 on the side of the outer foot become relatively low.

Therefore, by using the sole 110G and the shoe 100 having the sole 110G according to the present embodiment, as in the case of the above-described seventh embodiment, it is suitable for people who tend to overpronate or who have flat valgus feet. It is possible to provide a shoe sole and a shoe having the same, which are particularly suitable, which are excellent in stability at the time of landing, have good contact with the foot, and are light in weight.

It should be noted that the cushioning material 1M may be formed into a generally U-shaped shape in plan view as described above as a whole by combining a plurality of members independent of each other and joining them to each other, but this is more preferable. is preferably formed in the above-described substantially U-shaped shape in plan view by being configured as a single member as a whole. Particularly in the case of adopting the latter configuration, the cushioning material 1M provided with a plurality of rectangular parallelepiped unit structures U should be cut into non-rectangular parallelepiped shapes while eliminating unnecessary bias in the cushioning performance of each part. It is important to lay out the missing part.

38(A) to 38(E), a cushioning material having a plurality of unit structures U occupying a cubic unit space is partially or entirely A specific design that makes it possible to lay out in a non-rectangular parallelepiped area while eliminating unnecessary bias in the cushioning performance of each part by only slightly changing the shape without major shape changes. I will explain one method of.

First, as shown in FIG. 38A, while adjusting the size of the unit structures U in the area where the cushioning material is arranged, the number of unit structures U is changed in the width direction, the depth direction, and the height direction. It is divided into an area A1 in which it is possible to arrange the particles as they are by increasing or decreasing at least one of the vertical directions, and an area A2 in which it is difficult to do so. Specifically, in the present embodiment, among the regions in which the cushioning material 1M is arranged, the regions extending linearly along the peripheral edges on the inner foot side and the outer foot side of the sole 110G are the above regions. A region corresponding to A1 and extending in a curved line along the periphery of the rear end side of the sole 110G corresponds to the region A2.

Here, in the region A1, unit structures U each occupying a cubic unit space with three side lengths adjusted to Lx, Ly, and Lz are adjacent to each other as shown in FIG. Multiple arrays should be arranged to match. As a result, the area A1 is covered with a plurality of unit structures U whose sizes are adjusted without gaps.

On the other hand, in the area A2, as shown in FIG. 38(C), a specific set of faces among the three sets of faces facing each other is shaped so as to occupy a unit space that is non-parallel to each other. A plurality of unit structures U' configured as above are arranged next to each other. Here, the unit structure U' is arranged such that, of the four sides of the unit space extending in the width direction, a pair of adjacent sides has a length Lx' slightly shorter than the length Lx of the other side. , and the shape is changed so as to occupy the unit space after the adjustment. Such a slight change in shape does not significantly change the cushioning performance of the unit structure.

By arranging the unit structures U' having such a shape while individually adjusting their sizes and orientations, they can be arranged along the above-described region A2, which is a region extending in a curved line. It is possible to spread this almost without gaps. Therefore, by adding such a slight shape change, the area A2 can exhibit the same cushioning performance as the area A1 described above.

Therefore, by adopting such a design method, a cushioning material having a plurality of unit structural bodies U occupying a cubic unit space can be provided with a part or all of the plurality of unit structural bodies U having a large shape change. By only slightly changing the shape without accompanying the , it is possible to lay out in a non-rectangular parallelepiped area while eliminating unnecessary bias in the cushioning performance for each part.

Therefore, if the cushioning material is designed according to the design method, and based on this, the cushioning material is manufactured using a three-dimensional additive manufacturing device, the outer shape of the entire structure as a single member can have various shapes. A cushioning material can be easily obtained.

In the design method described above, when the cushioning material is spread over a region with a more complicated curved shape, as shown in FIG. A plurality of unit structures U1 configured to occupy unit spaces whose shapes are changed so as to be non-parallel to each other may be arranged adjacent to each other.

Here, the unit structure U1 is arranged so that, for example, of the four sides of the unit space extending in the width direction, a pair of adjacent sides have a length Lx′ slightly shorter than the length Lx of the other sides. In addition to adjusting, for example, a pair of adjacent sides among the four sides of the unit space extending in the height direction is adjusted to be Lz′ slightly shorter than the length Lz of the other sides. The shape is changed so as to occupy the adjusted unit space. Such a slight change in shape does not significantly change the cushioning performance of the unit structure.

By arranging the unit structures U1 having such a shape, adjusting their sizes and orientations individually, they can be laid out along the above-described complex curved region without gaps. can be done. Therefore, by adding such a slight change in shape, the cushioning performance equivalent to that of the above-described area A1 can be exhibited in this area as well.

In the design method described above, when the cushioning material is spread over the area extending linearly, instead of the unit structure U as shown in FIG. 38(B), the unit structure as shown in FIG. A plurality of bodies U2 may be arranged adjacent to each other. Here, the unit structure U2 occupies a unit space after adjustment so that three sets of faces facing each other are parallel, while the shape of a specific set of faces is a parallelogram. It is shaped like this.

In the illustrated unit structure U2, for example, by inclining each of the pair of surfaces positioned in the height direction along the width direction by an angle θ, the shape of the pair of surfaces is made into a parallelogram. ing. Such a slight change in shape does not significantly change the cushioning performance of the unit structure. Therefore, even when the unit structures U2 are laid out, it is possible to lay out the cushioning material without gaps while eliminating unnecessary bias in the cushioning performance of each part.

(Ninth and Tenth Modifications)
39 and 40 are perspective views of shock-absorbing materials provided in shoe soles according to ninth and tenth modifications, respectively. 39 and 40, cushioning materials 1M1 and 1M2 provided in shoe soles according to ninth and tenth modifications based on the thirteenth embodiment described above will be described below. The soles according to these ninth and tenth modifications are provided in the shoe 100 according to the thirteenth embodiment instead of the sole 110G described above.

As shown in FIG. 39, the cushioning material 1M1 provided in the shoe sole according to the ninth modification is similar to the cushioning material 1M provided in the shoe sole 110G according to the thirteenth embodiment described above, in a plan view as a whole. Although formed in a substantially U-shape, the configuration of the cushioning material 1M differs from that of the cushioning material 1M described above in that the standard of the three-dimensional structure S that constitutes the cushioning region of the cushioning material 1M1 is a gyroid structure. there is

As shown in FIG. 40, the cushioning material 1M2 provided in the shoe sole according to the tenth modification is similar to the cushioning material 1M provided in the shoe sole 110G according to the thirteenth embodiment described above, as a whole when viewed from above. Although formed in a substantially U-shape, the structure of the cushioning material 1M is different from that of the cushioning material 1M described above in that the three-dimensional structure S constituting the cushioning region of the cushioning material 1M1 is based on the Schwartz D structure. there is

Here, each of the cushioning materials 1M1 and 1M2 has three sections SC1 to SC3 like the cushioning material 1M described above. In the area SC1, a plurality of openings 17 positioned horizontally adjacent to each other at the ends of the cushioning materials 1M1 and 1M2 are alternately formed with flat plate-shaped deformed portions 30h (see the ninth configuration example shown in FIG. 14). ). Further, in the area SC2, the plurality of openings 17 horizontally adjacent to each other at the end portions of the cushioning materials 1M1 and 1M2 are all closed by the flat deformed portions 30h. On the other hand, in the area SC3, the plurality of openings 17 positioned at the ends of the cushioning materials 1M1 and 1M2 are exposed without being blocked. 39 and 40, the illustration of the internal structure of the cushioning members 1M1 and 1M2, which is visible from the outside through the opening 17, is omitted for easy understanding.

Therefore, even when configured in this way, as in the case of the above-described seventh embodiment, it is particularly suitable for people who tend to overpronate or people with flat feet, and the stability at the time of landing is excellent. , a shoe sole having a good feel on the foot and a light weight, and a shoe having the same.

(Summary of disclosure content in the embodiment, etc.)
The characteristic configurations disclosed in the above-described first to thirteenth embodiments and modifications thereof are summarized as follows.

A cushioning material according to an aspect of the present disclosure has a unit structure that is a three-dimensional shape formed by walls whose outer shape is defined by a pair of parallel planes or curved surfaces, and the unit structure is regular in at least one direction. It includes a three-dimensional structure that is systematically and continuously repetitively arranged. In the cushioning material according to the present invention, the deformed portion, which does not correspond to the walls defining the unit structures, is located in the buffer region, which is the region of the three-dimensional structure in which the unit structures are arranged. Locally established.

In the cushioning material according to an aspect of the present disclosure, the deformed portion has a plate shape having a thickness in a direction intersecting with an axial direction in which the cushioning material exerts a cushioning function by receiving a load. may be

In the cushioning material according to the aspect of the present disclosure, the deformed portion may reach both ends of the cushioning region in the axial direction so as to traverse the cushioning region.

In the cushioning material according to an aspect of the present disclosure, the deformed portion may be provided so as to cover an opening located at an end of the cushioning region in a direction intersecting the axial direction. .

In the cushioning material according to the aspect of the present disclosure, the three-dimensional structure may be configured by adding a thickness to a triple period minimal curved surface as a reference.

In the cushioning material according to one aspect of the present disclosure, the three-dimensional structure may have a Schwartz P structure, a gyroid structure, or a Schwartz D structure.

In the cushioning material according to one aspect of the present disclosure, the three-dimensional structure has a thickness based on a plurality of planes arranged to intersect with each other so that the three-dimensional structure has a cavity inside. may be configured with

In the cushioning material according to one aspect of the present disclosure, the three-dimensional structure may have an octet structure, a cubic structure, or a cubic octet structure.

The cushioning material according to one aspect of the present disclosure may be made of either a resin material or a rubber material.

1 selected from the group consisting of olefin-based polymer, amide-based polymer, ester-based polymer, urethane-based polymer, styrene-based polymer, acrylic-based polymer, and methacrylic-based polymer It may consist of a polymer composition containing more than one species.

A sole according to certain aspects of the present disclosure comprises a cushioning material according to certain aspects of the disclosure described above.

In the shoe sole according to the aspect of the present disclosure, even if the cushioning material is arranged such that the axial direction in which the cushioning material exerts a cushioning function by receiving a load is orthogonal to the ground contact surface. good.

A shoe according to certain aspects of the present disclosure comprises a sole according to certain aspects of the present disclosure described above and an upper disposed above the sole.

(Other forms, etc.)
In Embodiments 1 and 3 to 5 and their modifications described above, the deformed portions provided in the cushioning regions are arranged at both ends of the cushioning material along the axial direction in which the cushioning material exerts its cushioning function by receiving a load. Although the description has been given by exemplifying the case where the deformed portion is formed to reach the portion, the deformed portion may be formed to reach only one end portion in the axial direction, or may be formed to reach only one end portion in the axial direction. may be formed so as not to reach either end of the . Even in such a configuration, the compressive rigidity is correspondingly increased at the site where the deformed portion is provided.

Further, in the above-described first to sixth embodiments and their modifications, the case where all of the plurality of unit structures included in the three-dimensional structure are configured to have the same external dimensions has been described as an example. As described above, the width, depth, and height dimensions of the unit structure can be changed in various ways. Therefore, it is possible to configure the three-dimensional structure that constitutes the buffer region to include unit structures having different outer dimensions. With this configuration, it is possible to variously adjust the compression performance and deformability for each part of the cushioning material.

Therefore, by adjusting the outer dimensions of the unit structure for each part of the cushioning material and providing a deformed part at a specific part of the cushioning material, various combinations of these parts can be used to create various cushioning materials. A functional cushioning material can be manufactured with a high degree of freedom in design. In particular, in the cushioning material provided on the sole, the outer dimensions of the unit structure are adjusted for each part of the cushioning material, and the presence or absence and shape of the above-described cover-like deformed portion at the end of the cushioning material. By variously changing the thickness, etc., it becomes possible to easily manufacture a cushioning material having a desired cushioning function.

In the above-described second to fourth and sixth to thirteenth embodiments and their modifications, the cushioning material in which the deformed portion is provided only at the end of the cushioning area, and the shoe sole and the shoe equipped with the cushioning material are provided. Although the description has been made by way of example, instead of this, a cushioning material having a deformed portion provided not only at the end of the cushioning area but also at a predetermined position inside it, and a shoe sole and a shoe equipped with the cushioning material good too.

In the above-described seventh to thirteenth embodiments and their modifications, the three-dimensional structure as a buffer region is sandwiched between a pair of support portions in the axial direction of the shock absorber, and the shoe sole and the shoe equipped with the shock absorber are provided. In this case, each of the pair of support portions is attached to the midsole, outsole, upper body, or the like to be opposed to it by bonding or the like. May be fixed. On the other hand, in the case of providing the support portion as described above on the part of the cushioning material on the side of the contact surface, the support portion itself functions as an outsole, thereby eliminating the need to install an outsole made of a separate member. may Furthermore, the cushioning material may be fixed directly to the midsole, outsole, upper body or the like by adhesion or the like without providing the support portion.

Further, in the above-described seventh to thirteenth embodiments and their modifications, explanations have been given by exemplifying the case where the cushioning material is arranged in part or all of the shoe sole when viewed from above. The positions to be provided are not limited to the layouts specifically exemplified in these embodiments and modifications. For example, depending on the type and application of the sport in which the shoe is used, the cushioning material may be placed only on either the inner foot side portion or the outer foot side portion of the shoe sole, or the edge of the shoe sole may be provided. The cushioning material may be arranged only in some regions (these partial regions may be provided independently of each other) along the part. Also, the cushioning material may be provided between the midsole and the upper. Here, when a cushioning material is provided on the entire surface of the sole, the entire sole may be replaced with a cushioning material instead of the midsole.

Further, the wall thickness of the cushioning material may be varied according to the arrangement position with respect to the shoe sole, or the surface structure of the cushioning material may be varied according to the arrangement position with respect to the shoe sole. For example, a cushioning material having a surface structure of Schwartz P structure may be placed in a certain portion of the shoe sole, and a cushioning material having a surface structure of gyroid structure may be placed in another portion of the shoe sole. good.

In addition, in the above-described seventh to thirteenth embodiments and their modifications, the case where the present invention is applied to shoes having a shoe tongue and a shoelace has been described as an example, but shoes not having these (for example, The present invention may be applied to a shoe or the like having a sock-like upper and a shoe sole provided therewith.

Furthermore, in the above-described seventh to thirteenth embodiments and their modifications, the case where the cushioning material according to the present invention is applied to the sole of a shoe has been described as an example, but the cushioning material according to the present invention can be used for other cushioning applications. For example, the cushioning material according to the present invention can be used for various purposes such as packing materials, floor materials for buildings (for example, houses), surface materials for paved roads, surface materials for sofas and chairs, tires, and the like. can.

Moreover, the characteristic configurations disclosed in the above-described Embodiments 1 to 13 and their modifications can be combined with each other without departing from the gist of the present invention.

Thus, the above-described embodiments and their modifications disclosed this time are illustrative in all respects and are not restrictive. The technical scope of the present invention is defined by the scope of claims, and includes all changes within the meaning and scope of equivalents to the description of the scope of claims.

1A to 1M, 1A1 to 1A3, 1B1 to 1B3, 1G1, 1G2, 1M1, 1M2 cushioning material, 10 wall, 11 meandering part, 12 turning point, 13 inside corner part, 14 outside corner part, 17 opening part, 17a third 1 opening, 17b second opening, 30, 30a to 30h deformed portion, 40 support portion, 100 shoe, 110A to 110G sole, 111 midsole, 112 outsole, 112a ground surface, 120 upper, 121 upper body, 122 shoe tongue, 123 shoelace, Q1 part that supports the big toe, Q2 part that supports the little toe, Q3 part that supports the calcaneus, R1 forefoot part, R2 middle foot part, R3 rear foot part, S three-dimensional structure, U, U', U1, U2 Unit structures.

Claims (11)

A shoe sole with a cushioning material,
The cushioning material has a unit structure that is a three-dimensional shape formed by walls whose outer shape is defined by a pair of parallel planes or curved surfaces, and the unit structure is regularly and continuously repeated in at least one direction. including an arrayed three-dimensional structure,
a deformed portion that does not correspond to the wall that defines the unit structure is locally provided in a buffer region that is a region in which the unit structure of the three-dimensional structure is arranged;
The deformed portion forms a plate shape having a thickness in a direction intersecting the axial direction in which the cushioning material exerts a cushioning function by receiving a load, and is connected so as to be integrated with the adjacent unit structure. The sole of the shoe. A shoe sole with a cushioning material,
The cushioning material has a unit structure that is a three-dimensional shape formed by walls whose outer shape is defined by a pair of parallel planes or curved surfaces, and the unit structure is regularly and continuously repeated in at least one direction. including an arrayed three-dimensional structure,
a deformed portion that does not correspond to the wall that defines the unit structure is locally provided in a buffer region that is a region in which the unit structure of the three-dimensional structure is arranged;
The deformed portion has a plate shape having a thickness in a direction that intersects the axial direction in which the cushioning material exerts a cushioning function by receiving a load, and extends in the axial direction of the cushioning region so as to traverse the cushioning region. The sole of the shoe, which extends to both ends of the A shoe sole with a cushioning material,
The cushioning material has a unit structure that is a three-dimensional shape formed by walls whose outer shape is defined by a pair of parallel planes or curved surfaces, and the unit structure is regularly and continuously repeated in at least one direction. including an arrayed three-dimensional structure,
a deformed portion that does not correspond to the wall that defines the unit structure is locally provided in a buffer region that is a region in which the unit structure of the three-dimensional structure is arranged;
The deformed portion has a plate shape having a thickness in a direction intersecting the axial direction in which the cushioning material exerts a cushioning function by receiving a load, and is located at an end portion of the cushioning region in the direction intersecting the axial direction. A sole provided to cover at least a portion of the located opening. 4. The sole according to any one of claims 1 to 3 , wherein said three-dimensional structure is formed by adding thickness to a triple period minimal curved surface. 5. The sole according to claim 4 , wherein said three-dimensional structure has a Schwartz P structure, a gyroid structure, or a Schwartz D structure. 4. The three-dimensional structure according to any one of claims 1 to 3 , wherein the three-dimensional structure is made of a plurality of planes arranged to intersect with each other and which are thickened so as to have a cavity inside. Sole as described. 7. The sole according to claim 6 , wherein said three-dimensional structure has an octet structure, a cubic structure, or a cubic octet structure. The sole according to any one of claims 1 to 7 , which is made of either resin material or rubber material. A polymer composition containing at least one selected from the group consisting of olefin-based polymers, amide-based polymers, ester-based polymers, urethane-based polymers, styrene-based polymers, acrylic-based polymers, and methacrylic-based polymers. 8. The sole according to 8. The sole according to any one of claims 1 to 9 , wherein the cushioning material is arranged such that an axial direction in which the cushioning material exerts a cushioning function by receiving a load is orthogonal to the ground contact surface. a sole according to any one of claims 1 to 10 ;
and an upper provided above the sole.

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