JP5083660B2 - Sole structure of sports shoes and sports shoes - Google Patents
Sole structure of sports shoes and sports shoes Download PDFInfo
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Description
本発明は、スポーツ用シューズのソール構造およびスポーツ用シューズに関し、特に、防滑特性に優れたスポーツ用シューズのソール構造および該ソール構造を備えたスポーツ用シューズに関する。 The present invention relates to a sole structure for sports shoes and sports shoes, and more particularly to a sole structure for sports shoes having excellent anti-slip characteristics and a sports shoe having the sole structure.
従来から、スポーツ用シューズの防滑特性を向上すべくソール部の底面形状に様々な工夫が施されている。たとえば、特開２００４−２１６０１９号公報には、防滑特性を向上すべく、ソール部の底面に多数の横筋山を設け、この横筋山の爪先側壁面の傾斜角度θａが踵側壁面の傾斜角度θｂよりも大であり、ハードコート上で摩擦係数を測定したとき、この底面の爪先方向における摩擦係数μａと踵側方向における摩擦係数μｂとの比（μａ／μｂ）が０．３以上０．９以下であるテニスシューズが記載されている。
上記文献に記載のテニスシューズでは、ソール部の底面に設けた横筋山の爪先側壁面と踵側壁面の傾斜角度の関係を規定しているが、あくまで各横筋山の形状にのみ着目したものである。 In the tennis shoes described in the above-mentioned document, the relationship between the inclination angle of the toe side wall surface and the heel side wall surface of the horizontal muscle mountain provided on the bottom surface of the sole portion is specified, but only focusing on the shape of each horizontal muscle mountain. is there.
しかし、本願発明者等が、独自のモデルによる有限要素法（ＦＥＭ）解析を行ない防滑特性に優れたスポーツ用シューズのソール底面の形状について検討したところ、上記文献のようにソール底面の各凸部形状のみに着目しただけでは、十分な防滑特性が得られない場合があることが判明した。 However, the inventors of the present application conducted a finite element method (FEM) analysis using a unique model and examined the shape of the sole bottom of a sports shoe having excellent anti-slip characteristics. It has been found that sufficient anti-slip characteristics may not be obtained by focusing only on the shape.
そこで、本発明は、防滑特性に優れたスポーツ用シューズのソール構造および該ソール構造を備えたスポーツ用シューズを提供することを目的とする。 Accordingly, an object of the present invention is to provide a sole structure of a sports shoe excellent in anti-slip characteristics and a sports shoe having the sole structure.
本発明に係るスポーツ用シューズのソール構造は、装着者の足裏に沿って延在し、スポーツ用シューズのソール部の一部を構成する板状のベース部と、該ベース部の表面から突出し地面または床面と接する接触面を有する複数の凸部とを備える。上記凸部は、第１側壁と第２側壁とを有し、第１側壁は、ベース部に近い側の凸部の幅がベース部から離れた側の凸部の幅よりも大きくなるように傾斜しており、第１側壁と、上記ベース部の表面の垂線とのなす角度である第１角度は、第２側壁と、ベース部の表面の垂線とのなす角度である第２角度よりも大きい。そして、装着者がスポーツ用シューズを装着して動作を行なった際に、上記凸部に加わる荷重の向きが第１側壁から第２側壁に向かう方向となるように第１側壁と第２側壁とを配置する。 The sole structure of the sports shoe according to the present invention extends along the sole of the wearer and protrudes from the surface of the base portion that forms a part of the sole portion of the sport shoe, and the surface of the base portion. And a plurality of convex portions having contact surfaces in contact with the ground surface or the floor surface. The convex part has a first side wall and a second side wall, and the first side wall is such that the width of the convex part on the side close to the base part is larger than the width of the convex part on the side away from the base part. The first angle that is inclined and formed by the first side wall and the normal of the surface of the base portion is greater than the second angle that is the angle of the second side wall and the normal of the surface of the base portion. large. When the wearer wears sports shoes and performs an operation, the first side wall and the second side wall are arranged such that the direction of the load applied to the convex portion is a direction from the first side wall to the second side wall. Place.
上記第１側壁から第２側壁に向かう方向に隣り合う接触面間の間隔を、第１側壁から第２側壁に向かう方向の接触面の幅である接触幅の大きさに応じて変化させてもよい。 Even if the interval between contact surfaces adjacent in the direction from the first side wall to the second side wall is changed according to the size of the contact width in the direction from the first side wall to the second side wall. Good.
また、装着者が上記スポーツ用シューズを装着して動作を行なった際に地面または床面から接触面が受ける力である接触力の方向が荷重の向きと反対方向となるように、第１角度と、接触面間の間隔と、接触幅とを調節してもよい。 In addition, the first angle is set so that the direction of the contact force, which is the force received by the contact surface from the ground or floor when the wearer wears the sports shoes and moves, is opposite to the direction of the load. Further, the distance between the contact surfaces and the contact width may be adjusted.
上記第１側壁から第２側壁に向かう方向に隣り合う接触面間の間隔を、第１側壁から第２側壁に向かう方向の接触面の幅である接触幅と同じ値あるいはそれらの±０．５ｍｍの範囲内の値としてもよい。好ましくは、接触面間の間隔と接触幅とを、ともに１ｍｍ以上３ｍｍ以下の範囲内の値とする。 The distance between the contact surfaces adjacent in the direction from the first side wall to the second side wall is the same as the contact width that is the width of the contact surface in the direction from the first side wall to the second side wall, or ± 0.5 mm thereof. It is good also as a value within the range. Preferably, both the distance between the contact surfaces and the contact width are values in the range of 1 mm or more and 3 mm or less.
上記ベース部は、爪先側部と、踵側部と、装着者の足の第１指側に位置する内側部と、装着者の足の第５指側に位置する外側部とを有する。そして、爪先側部から踵側部に向かう縦方向に爪先側部の先端からベース部の最大長さの２０％〜４０％の範囲内であって、かつ内側部から外側部に向かう横方向に内側部の端部からベース部の最大幅の６０％の範囲内の領域に、上記凸部を設けることが考えられる。、また、上記縦方向に爪先側部の先端からベース部の最大長さの２０％〜５０％の範囲内であって、かつ横方向に内側部の端部からベース部の最大幅の６０％の位置から外側部に達する範囲内の領域に、凸部を設けてもよい。 The base part includes a toe side part, a heel side part, an inner part located on the first finger side of the wearer's foot, and an outer part located on the fifth finger side of the wearer's foot. And in the vertical direction from the toe side part toward the heel side part within the range of 20% to 40% of the maximum length of the base part from the tip of the toe side part, and in the lateral direction from the inner part to the outer part It is conceivable to provide the convex portion in a region within 60% of the maximum width of the base portion from the end portion of the inner portion. In addition, the vertical direction is within the range of 20% to 50% of the maximum length of the base portion from the tip of the toe side portion, and 60% of the maximum width of the base portion is laterally extended from the inner end portion. You may provide a convex part in the area | region in the range which reaches an outer side part from this position.
本発明に係るスポーツ用シューズは、上記のようなソール構造を備える。 The sports shoe according to the present invention has the above-described sole structure.
本発明では、装着者の足裏に沿うベース部に設けた凸部の側壁であってベース部表面の垂線に対する傾斜角度が相対的に大きい第１側壁から、傾斜角度が相対的に小さい第２側壁に向かう方向に荷重が作用するように第１側壁と第２側壁とを配置しているので、装着者がスポーツ用シューズを装着して動作を行なった際に上記凸部に作用する横方向の荷重を凸部で受けることができる。その結果、防滑特性を向上することができる。 In the present invention, a second side wall having a relatively small inclination angle is provided from a first side wall which is a side wall of a convex portion provided on the base part along the sole of the wearer and has a relatively large inclination angle with respect to the perpendicular to the surface of the base part. Since the first side wall and the second side wall are arranged so that the load acts in the direction toward the side wall, the lateral direction acting on the convex portion when the wearer wears sports shoes and performs the operation. The load can be received by the convex portion. As a result, the anti-slip property can be improved.
以下、本発明の実施の形態について図１〜図１１を用いて説明する。図１は、本実施の形態のソール構造を備えたスポーツ用シューズ１の斜視図である。本実施の形態のスポーツ用シューズ１は、バレーボールやバスケットボールのような屋内（たとえば体育館等）で行なうスポーツに有用であるが、テニスのような屋外で行なうスポーツにも使用可能である。特に、平滑な試技面（床面にコーティングを施したり、シートを敷設してもよい）上で行うスポーツに有用である。 Hereinafter, embodiments of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of a sports shoe 1 having the sole structure of the present embodiment. The sports shoes 1 of the present embodiment are useful for sports performed indoors (for example, a gymnasium) such as volleyball and basketball, but can also be used for sports performed outdoor such as tennis. In particular, it is useful for sports performed on a smooth trial surface (a floor may be coated or a sheet may be laid).
図１に示すように、スポーツ用シューズ１は、装着者の足の甲側を覆うアッパー部（甲被部）２と、装着者の足裏の下に配置されるソール部（底部）３とを備える。 As shown in FIG. 1, a sports shoe 1 includes an upper part (cover part) 2 that covers the back side of the wearer's foot, and a sole part (bottom part) 3 that is disposed under the sole of the wearer. Is provided.
アッパー部２は、編物、織物、人造皮革等の各種素材あるいはこれらを組合せた素材を用いて作製可能である。ソール部３は、装着者の足裏に沿って延在し、踵部から中足部を経て爪先部まで延設される。 The upper portion 2 can be manufactured using various materials such as knitted fabric, woven fabric, artificial leather, or a combination of these materials. The sole portion 3 extends along the sole of the wearer, and extends from the buttocks to the toe portion through the middle foot portion.
図１の例では、ソール部３は、ミッドソール３ａとアウトソール３ｂとを備える。ミッドソール３ａは単層構造としてもよいが、複数の層を積層した積層構造としてもよい。また、ミッドソール３ａを省略することも可能である。アウトソール３ｂは、ミッドソール３ａの下面に取付けられるとともに、ミッドソール３ａと同様に、踵部から中足部を経て爪先部まで延設される。このアウトソール３ｂは、底面に、地面または床面と接触する接触面を含む。 In the example of FIG. 1, the sole portion 3 includes a midsole 3a and an outsole 3b. The midsole 3a may have a single layer structure, but may have a stacked structure in which a plurality of layers are stacked. It is also possible to omit the midsole 3a. The outsole 3b is attached to the lower surface of the midsole 3a, and is extended from the buttocks to the toe portion through the middle foot, similarly to the midsole 3a. The outsole 3b includes a contact surface in contact with the ground surface or the floor surface on the bottom surface.
上記ミッドソール３ａおよびアウトソール３ｂは、たとえば軟質弾性部材を用いて作製することができる。たとえば、エチレン−酢酸ビニル共重合体（ＥＶＡ）等の熱可塑性樹脂の発泡体、ポリウレタン（ＰＵ）等の熱硬化性樹脂の発泡体、天然ゴムやスチレンブタジエンゴム、ブタジエンゴムなどの合成ゴムの一種または二種以上を添加したゴムや塩化ビニル樹脂、ウレタン樹脂などの合成樹脂のような軟質弾性部材でミッドソール３ａやアウトソール３ｂを作製することができる。また、上記軟質弾性部材と硬質性部材とを組合せてミッドソール３ａやアウトソール３ｂを作製してもよい。 The midsole 3a and the outsole 3b can be manufactured using, for example, a soft elastic member. For example, a thermoplastic resin foam such as ethylene-vinyl acetate copolymer (EVA), a thermosetting resin foam such as polyurethane (PU), a kind of synthetic rubber such as natural rubber, styrene butadiene rubber, and butadiene rubber Alternatively, the midsole 3a and the outsole 3b can be made of a soft elastic member such as a synthetic resin such as rubber, vinyl chloride resin, or urethane resin to which two or more kinds are added. Moreover, you may produce the midsole 3a and the outsole 3b combining the said soft elastic member and a hard member.
本実施の形態では、アウトソール３ｂの形状に特に工夫を施している。図２に、本実施の形態のアウトソール３ｂの構造例の部分断面図を示す。 In the present embodiment, the shape of the outsole 3b is particularly devised. In FIG. 2, the fragmentary sectional view of the structural example of the outsole 3b of this Embodiment is shown.
図２に示すように、アウトソール３ｂは、装着者の足裏に沿って延在する板状のベース部３０と、該ベース部３０の表面（下面）から突出し、地面または床面と接する接触面３４を有する複数の凸部３１とを備える。 As shown in FIG. 2, the outsole 3b has a plate-like base portion 30 that extends along the sole of the wearer, and a contact that protrudes from the surface (lower surface) of the base portion 30 and makes contact with the ground or floor surface. A plurality of convex portions 31 having a surface 34.
凸部３１は、所定間隔をあけて配列され、それぞれ第１側壁３２と、第２側壁３３と、底部に接触面３４とを有する。第１側壁３２と第２側壁３３は、凸部３１の両側に配置されている。第１側壁３２は、ベース部３０に近い側の凸部３１の幅がベース部３０から離れた側の凸部３１の幅よりも大きくなるようにテーパ状に傾斜している。接触面３４は、地面または床面と接触することが予定されている面であり、典型的には平坦な面で構成されるが、若干の凹凸を設けたり、曲面等の平坦面以外の面で構成してもよい。 The convex portions 31 are arranged at predetermined intervals, and each have a first side wall 32, a second side wall 33, and a contact surface 34 at the bottom. The first side wall 32 and the second side wall 33 are disposed on both sides of the convex portion 31. The first side wall 32 is inclined in a tapered shape so that the width of the convex portion 31 on the side close to the base portion 30 is larger than the width of the convex portion 31 on the side away from the base portion 30. The contact surface 34 is a surface that is expected to come into contact with the ground surface or the floor surface, and is typically configured as a flat surface. However, the contact surface 34 is provided with a slight unevenness or a surface other than a flat surface such as a curved surface. You may comprise.
図２に示すように、凸部３１の第１側壁３２の傾斜角度と第２側壁３３の傾斜角度は、互いに異ならせている。より詳しくは、第１側壁３２と、ベース部３０の平坦な表面（下面）の垂線とのなす角度である第１角度θ１を、第２側壁３３と、ベース部３０の上記表面の垂線とのなす角度である第２角度よりも大きくしている。したがって、図２に示す断面では、凸部３１は非対称形状を有することとなる。なお、図２の例では、第２側壁３３は、ベース部３０の上記表面に対し垂直（第２角度は０（ゼロ）度）であるが、上記第１角度θ１よりも小さい角度θ２でベース部３０の上記表面の垂線に対し傾斜していてもよい。 As shown in FIG. 2, the inclination angle of the first side wall 32 of the convex portion 31 and the inclination angle of the second side wall 33 are different from each other. More specifically, a first angle θ1 that is an angle formed by the first side wall 32 and a normal to the flat surface (lower surface) of the base portion 30 is defined as the second side wall 33 and the normal to the surface of the base 30. It is larger than the second angle that is the angle formed. Therefore, in the cross section shown in FIG. 2, the convex part 31 will have an asymmetrical shape. In the example of FIG. 2, the second side wall 33 is perpendicular to the surface of the base portion 30 (the second angle is 0 (zero) degree), but the base is at an angle θ2 smaller than the first angle θ1. You may incline with respect to the normal of the said surface of the part 30. FIG.
本実施の形態では、装着者がスポーツ用シューズ１を装着して動作を行なった際に、上記凸部３１に加わる荷重の向き（横方向成分の向き）が第１側壁３２から第２側壁３３に向かう方向となるように第１側壁３２と第２側壁３３とを配置する。 In the present embodiment, when the wearer wears the sports shoes 1 and operates, the direction of the load applied to the convex portion 31 (the direction of the lateral component) is changed from the first side wall 32 to the second side wall 33. The first side wall 32 and the second side wall 33 are arranged so as to be in the direction toward the front.
隣り合う凸部３１間には、間隙を設ける。この間隙の幅は、図２の例では、凸部３１の付根部から接触面３４に向かうにつれて徐々に増大し、隣り合う凸部３１の接触面３４間で最も大きくなる。そして、図２の例では、隣り合う凸部３１の接触面３４間の間隔（以下「リブ間隔」という）Ｄを、接触面３４の幅Ｗ（以下「接触幅」という）と同程度の大きさとしている。 A gap is provided between adjacent convex portions 31. In the example of FIG. 2, the width of the gap gradually increases from the root portion of the convex portion 31 toward the contact surface 34 and becomes the largest between the contact surfaces 34 of the adjacent convex portions 31. In the example of FIG. 2, the interval (hereinafter referred to as “rib interval”) D between the contact surfaces 34 of the adjacent convex portions 31 is as large as the width W (hereinafter referred to as “contact width”) of the contact surface 34. I am trying.
図２に示すアウトソール３ｂの材質としては、たとえばＪＩＳ Ｋ ６２５３ Ａ４５〜Ａ８５の硬さの軟質弾性材料を使用する。ここで硬さとは、温度２０±２℃、相対湿度６５±２％の条件下に４時間以上放置したものを、室温２０℃程度の室内にてＪＩＳ Ｋ ６２５３規格に準拠した硬度計を用いて計測した場合のものである。望ましくは一般的なシューズとしての耐久性やグリップ性、屈曲性などのバランスを考慮し、ＪＩＳ Ｋ ６２５３ Ａ５０〜Ａ７０の硬さを有するものがよい。 As the material of the outsole 3b shown in FIG. 2, for example, a soft elastic material having a hardness of JIS K 6253 A45 to A85 is used. The term “hardness” as used herein refers to a hardness meter conforming to the JIS K 6253 standard in a room at a room temperature of about 20 ° C. that is left for 4 hours or more under the conditions of a temperature of 20 ± 2 ° C. and a relative humidity of 65 ± 2%. It is a thing when measuring. Desirably, a shoe having a hardness of JIS K 6253 A50 to A70 is considered in consideration of a balance such as durability, grip property and flexibility as a general shoe.
アウトソール３ｂのベース部３０の厚みｔは、たとえば１ｍｍ〜２ｍｍ程度であり、凸部３１の高さＨは、たとえば１ｍｍ〜５ｍｍ程度である。 The thickness t of the base portion 30 of the outsole 3b is, for example, about 1 mm to 2 mm, and the height H of the convex portion 31 is, for example, about 1 mm to 5 mm.
本願発明者等は、図２に示すアウトソール３ｂが優れた防滑特性を有することを確認すべく、有限要素法（ＦＥＭ）解析を行なったので、その結果について、図３〜図８を用いて説明する。 The present inventors conducted a finite element method (FEM) analysis in order to confirm that the outsole 3b shown in FIG. 2 has excellent anti-slip characteristics, and the results are shown in FIGS. explain.
図３は、上記アウトソール３ｂの有限要素解析用モデルを示す図である。なお、説明の便宜上、図３に示すモデルの各部には図２に示す例の対応部分と同じ参照番号を付し、図３に示すモデルの各部の説明は省略する。 FIG. 3 is a diagram showing a finite element analysis model of the outsole 3b. For convenience of explanation, each part of the model shown in FIG. 3 is given the same reference numeral as the corresponding part in the example shown in FIG. 2, and description of each part of the model shown in FIG. 3 is omitted.
解析にはＰａｍＣｒａｓｈ ｖ２００６（日本イーエスアイ株式会社）を用いる。解析モデルはシューズソール部、地面に相当する部分およびシューズ上面に均等に荷重を加えるための剛体面の３つの部分から構成される。ここで解析モデルの要素サイズは０．２ｍｍとする。シューズのソール部は８節点ソリッド要素，シューズのソール部上面の剛体面および地面は４節点シェル要素を用いる。シューズのソール部の上面と剛体の接触は、接触タイプ３６（Ｓｅｌｆ−ｉｍｐａｃｔ Ｎｏｄｅ−ｔｏ−Ｓｅｇｍｅｎｔ Ｃｏｎｔａｃｔ ｗｉｔｈ Ｅｄｇｅ Ｔｒｅａｔｍｅｎｔ）を用い、地面と接触面３４との接触は、接触タイプ３４（Ｎｏｎ−Ｓｙｍｍｅｔｒｉｃ Ｎｏｄｅ−ｔｏ−Ｓｅｇｍｅｎｔ Ｃｏｎｔａｃｔ ｗｉｔｈ Ｅｄｇｅ Ｔｒｅａｔｍｅｎｔ）を用いる。荷重条件としては、矢印４で示す斜め方向の荷重（Ｘ方向に＋０．１７６３３ｋＮ、Ｙ方向に−１．０ｋＮ）を剛体面の重心位置に与える。防滑特性のパラメータは地面と接触面３４との接触力とする。 PamCrash v2006 (Japan SII Corporation) is used for the analysis. The analysis model is composed of three parts: a shoe sole part, a part corresponding to the ground, and a rigid surface for applying a load evenly to the shoe upper surface. Here, the element size of the analysis model is 0.2 mm. The sole part of the shoe uses an 8-node solid element, and the rigid surface on the upper surface of the sole part of the shoe and the ground use a 4-node shell element. The contact between the upper surface of the sole portion of the shoe and the rigid body is a contact type 36 (Self-impact Node-to-Segment with Edge Treatment), and the contact between the ground and the contact surface 34 is a contact type 34 (Non-Symmetric Node). -To-Segment Contact with Edge Treatment). As a load condition, an oblique load indicated by an arrow 4 (+0.17633 kN in the X direction and −1.0 kN in the Y direction) is applied to the position of the center of gravity of the rigid surface. The parameter of the anti-slip characteristic is a contact force between the ground and the contact surface 34.
図４と図５に、図３に示すモデルの変形挙動例を示す。図４には、図３の向きと反対の向きに荷重を作用させた場合の変形挙動例を示し、図５には、図３の向きと同じ向きに荷重を作用させた場合の変形挙動例を示す。 4 and 5 show examples of deformation behavior of the model shown in FIG. FIG. 4 shows an example of deformation behavior when a load is applied in the direction opposite to the direction of FIG. 3, and FIG. 5 shows an example of deformation behavior when a load is applied in the same direction as that of FIG. Indicates.
図４に示すように、図３の向きと反対の向きに荷重を作用させると、アウトソール３ｂの各凸部３１が図の右側に倒れたような状態となり、接触面３４と地面とが接触した際にこれらの間に作用する接触力は矢印５で示す方向に作用することとなる。つまり、図４の例では、接触面３４と地面との間に作用する接触力の向きが、矢印４で示す荷重の向きと同じ向きになる。そのため、荷重を各凸部３１で充分に受けることができず、良好な防滑特性は得られない。 As shown in FIG. 4, when a load is applied in a direction opposite to the direction of FIG. 3, each convex portion 31 of the outsole 3b falls to the right side in the figure, and the contact surface 34 and the ground contact each other. When this occurs, the contact force acting between them acts in the direction indicated by the arrow 5. That is, in the example of FIG. 4, the direction of the contact force acting between the contact surface 34 and the ground is the same as the direction of the load indicated by the arrow 4. For this reason, the load cannot be sufficiently received by each convex portion 31, and good anti-slip characteristics cannot be obtained.
それに対し、図５に示すように、ベース部３０の表面の垂線に対する第１側壁３２の傾斜角度（テーパ角度：θ１）を第２側壁３３の傾斜角度よりも大きくした場合には、第１側壁３２から第２側壁３３に向かう方向である矢印４で示す方向に荷重を作用させた際に、各凸部３１が図の右側に倒れずにベース部３０を支持した状態となる。その結果、接触力は矢印５で示すように図４の場合とは反対方向に作用することとなり、接触面３４と地面との間に作用する接触力の向きが荷重の向きとは反対の向きとなる。このため、図５の例によれば良好な防滑特性が得られる。 On the other hand, as shown in FIG. 5, when the inclination angle (taper angle: θ1) of the first side wall 32 with respect to the normal of the surface of the base portion 30 is larger than the inclination angle of the second side wall 33, the first side wall When a load is applied in a direction indicated by an arrow 4 that is a direction from 32 to the second side wall 33, each convex portion 31 is in a state of supporting the base portion 30 without falling to the right side of the drawing. As a result, the contact force acts in the direction opposite to that shown in FIG. 4 as indicated by the arrow 5, and the direction of the contact force acting between the contact surface 34 and the ground is opposite to the direction of the load. It becomes. For this reason, according to the example of FIG.
以上の解析結果より、装着者が図２に示す形状の部分を含むアウトソール３ｂを備えたスポーツ用シューズ１を装着して動作を行なった際に、上記凸部３１に加わる荷重の向きが第１側壁３２から第２側壁３３に向かう方向となるように第１側壁３２と第２側壁３３とを配置することにより、良好な防滑特性が得られることがわかる。 From the above analysis results, when the wearer wears the sports shoe 1 having the outsole 3b including the shape shown in FIG. It can be seen that by providing the first side wall 32 and the second side wall 33 in the direction from the first side wall 32 toward the second side wall 33, good anti-slip characteristics can be obtained.
次に、本願発明者等は、図３に示すモデルの接触幅Ｗを２ｍｍ、リブ間隔Ｄを１．５ｍｍに固定し、第１側壁３２の傾斜角度である第１角度θ１を１０度から２８度まで変化させて上記接触力の値を算出したので、その結果を図６に示す。 Next, the inventors of the present invention fix the contact width W of the model shown in FIG. 3 to 2 mm, the rib interval D to 1.5 mm, and set the first angle θ1 that is the inclination angle of the first side wall 32 from 10 degrees to 28 degrees. Since the value of the contact force was calculated by changing the angle to a degree, the result is shown in FIG.
図６に示すように、図３に示す第１角度θ１を変化させることで、接触力の値も変化することがわかる。この図６では、縦軸に接触力の絶対値を記載しており、図６に示す各接触力は、図３に示す矢印５の方向、つまり荷重の向きと反対方向に作用する。また、第１角度θ１を０（ゼロ）度よりも大きい角度とすることで、上記接触力を荷重の向きと反対方向に作用させることができることも確認している。なお、図６における「移動量」とは、シューズソール部上面の剛体部の重心位置のＸ方向の移動量のことである。 As shown in FIG. 6, it can be seen that the value of the contact force also changes by changing the first angle θ1 shown in FIG. In FIG. 6, the absolute value of the contact force is shown on the vertical axis, and each contact force shown in FIG. 6 acts in the direction of the arrow 5 shown in FIG. 3, that is, the direction opposite to the direction of the load. It has also been confirmed that the contact force can be applied in a direction opposite to the direction of the load by setting the first angle θ1 to an angle larger than 0 (zero) degree. Note that the “movement amount” in FIG. 6 is the movement amount in the X direction of the gravity center position of the rigid body portion on the upper surface of the shoe sole portion.
また、本願発明者等は、接触幅Ｗを１ｍｍ〜６ｍｍ、リブ間隔Ｄを０．５ｍｍ〜３ｍｍに変化させたモデルを作成し、接触力の値がどのように変化するかについても検討した。たとえば、接触幅Ｗの総和が６ｍｍになるように凸部３１の個数を決めた場合、接触幅Ｗは１ｍｍ、１．５ｍｍ、２ｍｍ、３ｍｍ、６ｍｍの５種類となり、リブ間隔Ｄは０．５ｍｍ〜３ｍｍまで０．５ｍｍ刻みの６種類となる。この検討結果を図７と図８に示す。なお、図７と図８において、黒丸の大きさは接触力の大きさを示している。 Further, the inventors of the present application created a model in which the contact width W was changed from 1 mm to 6 mm and the rib interval D was changed from 0.5 mm to 3 mm, and examined how the value of the contact force changes. For example, when the number of the protrusions 31 is determined so that the sum of the contact widths W is 6 mm, the contact widths W are 5 types of 1 mm, 1.5 mm, 2 mm, 3 mm, and 6 mm, and the rib interval D is 0.5 mm. There are 6 types in 0.5mm increments up to ~ 3mm. The examination results are shown in FIGS. In FIG. 7 and FIG. 8, the size of the black circle indicates the size of the contact force.
図７および図８に示すように、リブ間隔Ｄを変化させた場合も、接触力の値が変化することがわかる。また、接触幅Ｗを変化させた場合も、接触力の値は変化する。したがって、リブ間隔Ｄを接触幅Ｗに応じて適切に調整することで、接触力の値を所望の値とすることができ、優れた防滑特性を実現することができる。 As shown in FIGS. 7 and 8, it can be seen that even when the rib interval D is changed, the value of the contact force changes. Further, when the contact width W is changed, the value of the contact force also changes. Therefore, by appropriately adjusting the rib interval D according to the contact width W, the value of the contact force can be set to a desired value, and excellent anti-slip characteristics can be realized.
図７および図８に示すように、たとえば、リブ間隔Ｄと接触幅Ｗを同程度の値とした場合に、接触力の値が大きくなり、優れた防滑特性を期待できる。より詳しくは、リブ間隔Ｄと接触幅Ｗを同じ値あるいはその±０．５ｍｍの範囲内（たとえばリブ間隔Ｄと接触幅Ｗを１．５ｍｍとした場合には、図７において斜線を施した領域の範囲内）の値とした場合に、優れた防滑特性を期待できる。ここで、上記の「±０．５ｍｍ」という値は、シューズのソール部を実際に成形した場合に寸法がばらつき得ると考えられる値である。また、リブ間隔Ｄと接触幅Ｗを、とともに１ｍｍ以上３ｍｍ以下の範囲内の値とした場合も、優れた防滑特性を期待できる。さらに、リブ間隔Ｄや接触幅Ｗのみならず上記第１角度θ１をも適切に調整することで、容易に接触力の値を調整して防滑特性を調整することができる。 As shown in FIG. 7 and FIG. 8, for example, when the rib interval D and the contact width W are set to the same value, the value of the contact force increases, and excellent anti-slip characteristics can be expected. More specifically, the rib interval D and the contact width W are the same value or within a range of ± 0.5 mm (for example, when the rib interval D and the contact width W are 1.5 mm, the hatched area in FIG. If the value is within the range of (1), excellent anti-slip characteristics can be expected. Here, the above-mentioned value of “± 0.5 mm” is a value that can be considered to vary in dimensions when the sole portion of the shoe is actually formed. Further, when the rib interval D and the contact width W are set to values within the range of 1 mm or more and 3 mm or less, excellent anti-slip characteristics can be expected. Further, by appropriately adjusting not only the rib interval D and the contact width W but also the first angle θ1, the value of the contact force can be easily adjusted to adjust the anti-slip characteristic.
次に、本願発明等は、独自の手法で、運動時に人の足の裏に加わる力を算出したので、その結果を図９（ａ）〜（ｃ）〜図１１に示す。 Next, the present invention and the like calculate the force applied to the sole of a person's foot during exercise by a unique technique, and the results are shown in FIGS. 9 (a) to 9 (c) to FIG.
図９（ａ）は、前方に移動中にストップした場合の力の方向を矢印で示した図であり、図９（ｂ）は、サイドステップで右側に移動中にストップした場合の力の方向を矢印で示した図であり、図９（ｃ）は、前方に走行中の場合の力の方向を矢印で示した図である。なお、各図において曲線で囲まれた領域は、力の大きさが同じである領域を示し、最も外側の領域内に複数の領域が存在する部分もあるが、内側の領域ほど作用する力の大きさが大きい。 FIG. 9A is a diagram showing the direction of the force when stopped while moving forward by an arrow, and FIG. 9B is the direction of the force when stopped while moving right by the side step. FIG. 9C is a diagram showing the direction of force when traveling forward with arrows. In each figure, the area surrounded by the curve indicates an area where the magnitude of the force is the same, and there is a portion where a plurality of areas exist in the outermost area. Big in size.
図９（ａ）〜（ｃ）に示すように、各動作時の人の足の裏に加わる力の方向は様々なものであることがわかる。たとえば図９（ａ）では、アウトソールのベース部の内側部１７から外側部１８に向かう横方向の力が少なく、該ベース部の踵側部１６から爪先側部１５に向かう縦方向あるいは斜め方向の力が多くなる。それに対し、図９（ｂ）では、アウトソールのベース部の内側部１７から外側部１８に向かう横方向の力が多く、上記ベース部の踵側部１６から爪先側部１５に向かう縦方向あるいは斜め方向の力が少なくなる。図９（ｃ）では、上記ベース部の爪先側部１５から踵側部１６に向かう縦方向あるいは斜め方向の力が多くなる。 As shown in FIGS. 9A to 9C, it can be seen that there are various directions of the force applied to the sole of the human foot during each operation. For example, in FIG. 9A, there is little lateral force from the inner side 17 to the outer side 18 of the base portion of the outsole, and the vertical or diagonal direction from the heel side portion 16 to the toe side portion 15 of the base portion. The power of. On the other hand, in FIG. 9B, there is a lot of lateral force from the inner portion 17 to the outer portion 18 of the base portion of the outsole, and the vertical direction from the heel side portion 16 to the toe side portion 15 of the base portion or Diagonal force is reduced. In FIG.9 (c), the force of the vertical direction or diagonal direction which goes to the heel side part 16 from the toe side part 15 of the said base part increases.
本実施の形態の凸部３１を設けるには、上記の各図の矢印と直交する方向に延在するようにアウトソールのベース部の底面に上述の凸部３１を突設し、かつ上記矢印の方向に第１と第２側壁３２，３３が順次並ぶように複数の凸部３１を配列すればよい。それにより、スポーツ用シューズの防滑特性を向上することができる。 In order to provide the convex portion 31 according to the present embodiment, the convex portion 31 is provided on the bottom surface of the base portion of the outsole so as to extend in a direction orthogonal to the arrow in each of the above figures, and the arrow The plurality of convex portions 31 may be arranged so that the first and second side walls 32 and 33 are sequentially arranged in the direction of. Thereby, the anti-slip | skid characteristic of sports shoes can be improved.
なお、上記凸部３１は、アウトソールのベース部の底面の少なくとも一部に設置することで、その部分の優れた防滑効果を期待できる。特に、各動作中に大きな力が加わる箇所に各動作用の凸部３１を設けることで、全ての動作に対し防滑特性の優れたスポーツ用シューズ１が得られる。 In addition, the said convex part 31 can anticipate the anti-slipping effect excellent in the part by installing in the at least one part of the bottom face of the base part of an outsole. In particular, by providing the convex portions 31 for each operation at locations where a large force is applied during each operation, the sports shoe 1 having excellent anti-slip characteristics for all operations can be obtained.
次に、図１０（ａ），（ｂ）と図１１とを用いて、本実施の形態のスポーツ用シューズのアウトソールのベース部の底面における上記凸部３１の配置例について説明する。 Next, the example of arrangement | positioning of the said convex part 31 in the bottom face of the base part of the outsole of the sport shoes of this Embodiment is demonstrated using FIG. 10 (a), (b) and FIG.
図１０（ａ），（ｂ）に示すように、アウトソールのベース部は、爪先側部１５と、踵側部１６と、装着者の足の第１指側に位置する内側部１７と、装着者の足の第５指側に位置する外側部１８とを有する。そして、爪先側部１５から踵側部１６に向かう縦方向（長さ方向）に爪先側部１５の先端からベース部の最大長さの２０％〜４０％の範囲内であって、かつ内側部１７から外側部１８に向かう横方向（幅方向）に内側部１７の端部からベース部の最大幅の６０％の範囲内の第１領域８に、凸部３１を設けることが考えられる。 As shown in FIGS. 10 (a) and 10 (b), the base portion of the outsole includes a toe side portion 15, a heel side portion 16, an inner portion 17 located on the first finger side of the wearer's foot, And an outer portion 18 located on the fifth finger side of the wearer's foot. And it is in the range of 20% to 40% of the maximum length of the base portion from the tip of the toe side portion 15 in the longitudinal direction (length direction) from the toe side portion 15 to the heel side portion 16, and the inner portion It is conceivable that the convex portion 31 is provided in the first region 8 in the range of 60% of the maximum width of the base portion from the end portion of the inner portion 17 in the lateral direction (width direction) from 17 to the outer portion 18.
上記第１領域８は、図１０（ａ）に示す装着者の足の骨との関係では、横方向には第１指〜第３指にわたって延在し、縦方向には第１指〜第３指の基節骨１２ａ，１２ｂ，１２ｃから中足骨１３ａ，１３ｂ，１３ｃにわたって延在する領域である。 In the relationship with the wearer's foot bone shown in FIG. 10A, the first region 8 extends from the first finger to the third finger in the lateral direction, and from the first finger to the first in the vertical direction. This is an area extending from the three finger proximal phalanges 12a, 12b, and 12c to the metatarsals 13a, 13b, and 13c.
上記第１領域８に凸部３１を設ける際には、ベース部の横方向の中心線と凸部３１の長手（延在）方向とのなす角度θ３が、たとえば０（ゼロ）度〜１２０度となるようにベース部の底面に横方向に複数の凸部３１を並設すればよい。 When the convex portion 31 is provided in the first region 8, the angle θ3 formed by the horizontal center line of the base portion and the longitudinal (extending) direction of the convex portion 31 is, for example, 0 (zero) degree to 120 degrees. A plurality of convex portions 31 may be arranged in parallel in the lateral direction on the bottom surface of the base portion.
また、上記縦方向にベース部の爪先側部１５の先端からベース部の最大長さの２０％〜５０％の範囲内であって、かつ横方向にベース部の内側部１８の端部からベース部の最大幅の６０％の位置から、外側部１８に達する範囲内の第２領域９に、凸部３１を設けてもよい。 Further, the base portion is in the range of 20% to 50% of the maximum length of the base portion from the tip of the toe side portion 15 of the base portion, and the base portion extends from the end portion of the inner portion 18 of the base portion in the lateral direction. The convex portion 31 may be provided in the second region 9 within a range reaching the outer portion 18 from a position of 60% of the maximum width of the portion.
上記第２領域９は、図１０（ａ）に示す装着者の足の骨との関係では、横方向には第３指〜第５指にわたって延在し、縦方向には第３指の中節骨１１ｃから基節骨１２ｃを経て中足骨１３ｃにわたり、また第４指の末節骨１０ｄから中節骨１１ｄおよび基節骨１２ｄを経て中足骨１３ｄにわたり、第５指の末節骨１０ｅから中節骨１１ｅおよび基節骨１２ｅを経て中足骨１３ｅにわたる領域である。 In the relationship with the wearer's foot bone shown in FIG. 10A, the second region 9 extends from the third finger to the fifth finger in the horizontal direction and in the third finger in the vertical direction. From the phalanx 11c to the metatarsal bone 13c through the proximal phalanx 12c, from the fourth finger distal phalanx 10d to the metatarsal bone 11d and the proximal phalanx 12d to the metatarsal bone 13d, and from the fifth phalanx phalange 10e The region extends from the metatarsal bone 11e and the proximal phalanx 12e to the metatarsal bone 13e.
上記第２領域９に凸部３１を設ける際には、ベース部の横方向の中心線と凸部３１の長手（延在）方向とのなす角度θ３が、たとえば−１３５度〜４５度となるようにベース部の底面に横方向に複数の凸部３１を並設すればよい。 When the convex portion 31 is provided in the second region 9, the angle θ3 formed by the horizontal center line of the base portion and the longitudinal (extending) direction of the convex portion 31 is, for example, −135 degrees to 45 degrees. In this way, a plurality of convex portions 31 may be provided side by side on the bottom surface of the base portion.
なお、上記第１と第２領域８，９の双方に所定の角度で凸部３１を設けてもよいが、第１と第２領域８，９の一方に凸部３１を設けてもよい。また、凸部３１の形状は上記以外の任意の形状とすることができる。さらに、アウトソールのベース部において、上記第１と第２領域８，９とは異なる形状および位置の領域に、凸部３１を設けてもよい。 In addition, although the convex part 31 may be provided in a predetermined angle in both the said 1st and 2nd area | regions 8 and 9, you may provide the convex part 31 in one of the 1st and 2nd area | regions 8 and 9. FIG. Moreover, the shape of the convex part 31 can be made into arbitrary shapes other than the above. Further, in the base portion of the outsole, the convex portion 31 may be provided in a region having a shape and a position different from those of the first and second regions 8 and 9.
以上のように本発明の実施の形態について説明を行なったが、上述の実施の形態を様々に変形することも可能である。また、本発明の範囲は上述の実施の形態に限定されるものではない。本発明の範囲は、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更を含むことが意図される。 Although the embodiment of the present invention has been described above, the above-described embodiment can be variously modified. The scope of the present invention is not limited to the above-described embodiment. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
１ スポーツ用シューズ、２ アッパー部、３ ソール部、３ａ ミッドソール、３ｂ アウトソール、４，５，７ 矢印、６ フレックスライン、８ 第１領域、９ 第２領域、１０ｄ，１０ｅ 末節骨、１１ｃ，１１ｄ，１１ｅ 中節骨、１２ａ，１２ｂ，１２ｃ，１２ｄ，１２ｅ 基節骨、１３ａ，１３ｂ，１３ｃ，１３ｄ，１３ｅ 中足骨、１５ 爪先側部、１６ 踵側部、１７ 内側部、１８ 外側部、３０ ベース部、３１ 凸部、３２ 第１側壁、３３ 第２側壁、３４ 接触面。 DESCRIPTION OF SYMBOLS 1 Sport shoes, 2 Upper part, 3 Sole part, 3a Midsole, 3b Outsole, 4, 5, 7 Arrow, 6 Flex line, 8 1st area | region, 9 2nd area | region, 10d, 10e End phalanx, 11c, 11d, 11e Middle phalanx, 12a, 12b, 12c, 12d, 12e Basic phalanx, 13a, 13b, 13c, 13d, 13e Metatarsal bone, 15 Toe side part, 16 heel side part, 17 medial part, 18 lateral part , 30 base portion, 31 convex portion, 32 first side wall, 33 second side wall, 34 contact surface.
Claims (8)
前記ベース部（３０）の表面から突出し地面または床面と接する接触面（３４）を有する複数の凸部（３１）とを備え、
前記凸部（３１）は、第１側壁（３２）と第２側壁（３３）とを有し、
前記第１側壁（３２）は、前記ベース部（３０）に近い側の前記凸部（３１）の幅が前記ベース部（３０）から離れた側の前記凸部（３１）の幅よりも大きくなるように傾斜しており、
前記第１側壁（３２）と、前記ベース部（３０）の表面の垂線とのなす角度である第１角度は、前記第２側壁（３３）と、前記ベース部（３０）の表面の垂線とのなす角度である第２角度よりも大きく、
装着者が前記スポーツ用シューズ（１）を装着して動作を行なった際に、前記凸部（３１）に加わる荷重の向きが前記第１側壁（３２）から前記第２側壁（３３）に向かう方向となるように前記第１側壁（３２）と前記第２側壁（３３）とを配置し、
前記第１側壁（３２）から前記第２側壁（３３）に向かう方向に隣り合う前記接触面（３４）間の間隔（Ｄ）を、前記第１側壁（３２）から前記第２側壁（３３）に向かう方向の前記接触面（３４）の幅である接地幅（Ｗ）の大きさに応じて変化させ、
装着者が前記スポーツ用シューズ（１）を装着して動作を行なった際に前記地面または床面から前記接触面（３４）が受ける力である接触力の方向が前記荷重の向きと反対方向となるように、前記第１角度と、前記接触面（３４）間の間隔（Ｄ）と、前記接触幅（Ｗ）とを調節した、スポーツ用シューズのソール構造。 A plate-like base portion (30) extending along the sole of the wearer and constituting a part of the sole portion (3) of the sports shoe (1);
A plurality of convex portions (31) having a contact surface (34) protruding from the surface of the base portion (30) and in contact with the ground or floor surface;
The convex portion (31) has a first side wall (32) and a second side wall (33),
In the first side wall (32), the width of the convex portion (31) on the side close to the base portion (30) is larger than the width of the convex portion (31) on the side away from the base portion (30). It is inclined so that
The first angle, which is an angle formed between the first side wall (32) and the surface normal of the base part (30), is the second side wall (33) and the surface normal of the base part (30). Is larger than the second angle which is the angle formed by
When the wearer wears the sports shoe (1) and performs an operation, the direction of the load applied to the convex portion (31) is directed from the first side wall (32) to the second side wall (33). and said first side wall such that the direction (32) and said second side wall (33) is arranged,
The distance (D) between the contact surfaces (34) adjacent to each other in the direction from the first side wall (32) to the second side wall (33) is determined from the first side wall (32) to the second side wall (33). And changing according to the size of the contact width (W) which is the width of the contact surface (34) in the direction toward
When the wearer wears the sports shoes (1) and performs the operation, the direction of the contact force, which is the force received by the contact surface (34) from the ground or floor surface, is opposite to the direction of the load. A sports shoe sole structure in which the first angle, the distance (D) between the contact surfaces (34), and the contact width (W) are adjusted .
前記爪先側部（１５）から前記踵側部（１６）に向かう縦方向に前記爪先側部（１５）の先端から前記ベース部（３０）の最大長さの２０％〜４０％の範囲内であって、かつ前記内側部（１７）から前記外側部（１８）に向かう横方向に前記内側部（１７）の端部から前記ベース部（３０）の最大幅の６０％の範囲内の領域に、前記凸部（３１）を設けた、請求項１から請求項３のいずれかに記載のスポーツ用シューズのソール構造。 The base part (30) includes a toe side part (15), a heel side part (16), an inner part (17) located on the first finger side of the wearer's foot, and a fifth part of the wearer's foot. An outer portion (18) located on the finger side,
Within a range of 20% to 40% of the maximum length of the base portion (30) from the tip of the toe side portion (15) in the longitudinal direction from the toe side portion (15) to the heel side portion (16). And in a lateral direction from the inner part (17) to the outer part (18), from an end of the inner part (17) to a region within a range of 60% of the maximum width of the base part (30). The sole structure of the sport shoe according to any one of claims 1 to 3 , wherein the convex portion (31) is provided.
前記縦方向に前記爪先側部（１５）の先端から前記ベース部（３０）の最大長さの２０％〜５０％の範囲内であって、かつ前記横方向に前記内側部（１７）の端部から前記ベース部（３０）の最大幅の６０％の位置から前記外側部（１８）に達する範囲内の領域に、前記凸部（３１）を設けた、請求項１から請求項４のいずれかに記載のスポーツ用シューズのソール構造。 The base part (30) includes a toe side part (15), a heel side part (16), an inner part (17) located on the first finger side of the wearer's foot, and a fifth part of the wearer's foot. An outer portion (18) located on the finger side,
The end of the inner part (17) is in the range of 20% to 50% of the maximum length of the base part (30) from the tip of the toe side part (15) in the vertical direction and in the lateral direction. the base portion from the parts to a region within a range from 60% of the maximum width position of (30) reaches the outer part (18), provided the convex portion (31), one of claims 1 to 4 The sole structure of the sport shoes described in Crab.
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