JP7498450B1 - Heel structure of low shoes - Google Patents

Heel structure of low shoes Download PDF

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JP7498450B1
JP7498450B1 JP2023171015A JP2023171015A JP7498450B1 JP 7498450 B1 JP7498450 B1 JP 7498450B1 JP 2023171015 A JP2023171015 A JP 2023171015A JP 2023171015 A JP2023171015 A JP 2023171015A JP 7498450 B1 JP7498450 B1 JP 7498450B1
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穹 付
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CRAFT WORKS CO., LTD.
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Abstract

【課題】繰り返しかかとの体重付与による変形を行っても、ヒール下部の構造自体の弾性復帰力を比較的維持することができ、元の形状にまで繰り返し自立復帰できるヒール構造を提供する。【解決手段】所定の剛性の弾性樹脂製の成形体からなる上芯材１と、前記上芯材の所定の剛性よりも小さい剛性の弾性樹脂製の板状体からなる下芯材２と、を上下に組み合わせて構成され、鉛直方向を除く所定の傾斜方向に傾斜して部分円筒状又は部分円錐状に湾曲したヒール壁を有する立体形状をなす組合せ芯材と、前記上芯材１の前部、上部、及び後部を覆囲するクッション製材を有してなる上部ステー１ＨＬと、前記上部ステー１ＨＬ及び前記組み合わせ芯材を被覆材で全体被覆すると共に、かかと後部から両側部までを立体的に覆う立体補強部を外被着してなるカウンターヒール３と、足形のかかと部分の底面及びその周側部を含む履き底面を有して靴底全体を構成するソール板ＭＳとからなる、短靴のヒール構造。【選択図】図６[Problem] To provide a heel structure that can maintain the elastic restoring force of the heel lower structure itself even if it is deformed by repeated application of weight on the heel, and can repeatedly return to its original shape by itself. [Solution] A heel structure for low shoes, comprising: a combination core material formed by combining an upper core material 1 made of an elastic resin molded body with a predetermined rigidity and a lower core material 2 made of an elastic resin plate-like body with a rigidity smaller than the predetermined rigidity of the upper core material, and having a three-dimensional shape with a heel wall that is curved into a partially cylindrical or partially conical shape in a predetermined inclination direction except the vertical direction; an upper stay 1HL made of a cushion material that covers the front, upper, and rear of the upper core material 1; a counter heel 3 that entirely covers the upper stay 1HL and the combination core material with a covering material and is externally covered with a three-dimensional reinforcing part that three-dimensionally covers the heel from the rear to both sides; and a sole plate MS that has a wearing surface including the bottom surface of the heel part of the foot shape and its peripheral parts to form the entire sole. [Selected drawing] Fig. 6

Description

本発明は短靴のヒール構造に関する。このヒール構造を有した靴として、安全靴などの作業靴の他、スリップオンシューズ、ジョギングシューズといった、平坦なソール部を有した短靴に関する。 The present invention relates to a heel structure for low shoes. Shoes with this heel structure include short shoes with flat soles, such as work shoes such as safety shoes, slip-on shoes, and jogging shoes.

従来、ドッフィングレッジを有する履物品として、襟エレベータ（たとえば、襟エレベータ３５０および４５０）を有する履物品は、着用者が履物品を操作するために自分の手を使用しなくても、着用者が着用し得る履物品が開示される。例えば特許文献１（特公表2022-514060）に記載の履物品は、足首の襟を前記降下状態から前記直立状態に戻すように動作可能な襟エレベータであって、内側レバーアームと、外側レバーアームと、前記内側レバーアームを前記外側レバーアームに結合し、前記足首の襟の後方部分の近くに位置する中央連結バンドと、を有する襟エレベータ；を備える。中央連結バンドの下のアッパーの部分３２５または４２５は、アッパーの他の部分よりも柔軟な１つ以上の織地の壁を含み、アッパーのより柔軟な領域は、たとえば少なくとも部分的にヒールカウンター領域にあり得る。特に、このようなアッパーのより柔軟な部分３２５または４２５は、足首の襟が降下状態に移動するときに容易に折り畳まれ得、襟エレベータがより圧縮されていない状態に戻るときに襟エレベータに一層小さな抵抗を提供し得る、とされる。 Conventionally, as footwear having a doffing ledge, footwear having a collar elevator (e.g., collar elevators 350 and 450) is disclosed that can be worn by a wearer without using his/her hands to operate the footwear. For example, the footwear described in Patent Document 1 (JP Patent Publication 2022-514060) includes a collar elevator operable to return an ankle collar from the lowered state to the upright state, the collar elevator having an inner lever arm, an outer lever arm, and a central connecting band that connects the inner lever arm to the outer lever arm and is located near a rear portion of the ankle collar; The portion 325 or 425 of the upper below the central connecting band includes one or more fabric walls that are more flexible than other portions of the upper, and the more flexible region of the upper can be, for example, at least partially in the heel counter region. In particular, such a more flexible portion 325 or 425 of the upper can be easily folded when the ankle collar moves to the lowered state and can provide less resistance to the collar elevator when the collar elevator returns to a less compressed state.

また、たとえば、着用者の足指は、足挿入開口３１８または４１８を通じて挿入され得る一方、自分の足のアーチまたは踵は、足首の襟３３６または４３６をソール３１２または４１２に向かって下方へ圧迫するのに用いられる。このように、足首の襟３３６または４３６をソールにより近く降下状態に調整することにより、足挿入開口３１８または４１８のサイズが大きくなり得る。着用者の足が足受容空洞３１６または４１６内にスライドすると、襟エレベータ３５０または４５０は、足首の襟を降下状態（すなわち、図３Ｃおよび図４Ｃ）から直立状態（すなわち、図３Ａおよび図４Ａ）へ移動させて履物品を着用者の足に固定する、とされる。 Also, for example, the wearer's toes may be inserted through the foot insertion opening 318 or 418, while the arch or heel of his or her foot is used to press the ankle collar 336 or 436 downward toward the sole 312 or 412. In this manner, the size of the foot insertion opening 318 or 418 may be increased by adjusting the ankle collar 336 or 436 closer to the sole in a lowered state. As the wearer's foot slides into the foot receiving cavity 316 or 416, the collar elevator 350 or 450 is said to move the ankle collar from a lowered state (i.e., FIGS. 3C and 4C) to an upright state (i.e., FIGS. 3A and 4A) to secure the footwear article to the wearer's foot.

特公表２０２２－５１５８２４号公報Patent Publication No. 2022-515824

しかしながら上記従来の履物品は、繰り返しかかとの体重付与による変形を行うと、ヒール下部の構造体であるアウトカウンター自体の弾性復帰力が弱まり、或いは破断、圧潰ないし塑性変形して元の形状にまで自立復帰できない状態となる。また、接着部が繰り返し変形し引張外力を受けるため、耐久性に欠けて破損しやすいといった問題点があった。 However, in the above-mentioned conventional footwear, when deformation occurs due to repeated application of weight on the heel, the elastic restoring force of the outcounter itself, which is the structure under the heel, weakens, or it breaks, is crushed, or undergoes plastic deformation, making it unable to independently return to its original shape. In addition, because the adhesive joint is repeatedly deformed and subjected to external tensile forces, there is a problem in that it lacks durability and is prone to breakage.

そこで本発明は、繰り返しかかとの体重付与による変形を行っても、ヒール下部の構造自体の弾性復帰力を比較的維持することができ、元の形状にまで繰り返し自立復帰できるヒール構造を提供することを課題とする。また、繰り返し変形した場合でも耐久性を維持でき、破損しにくいヒール構造を提供することを課題とする。 The present invention aims to provide a heel structure that can relatively maintain the elastic restoring force of the heel lower structure itself even when it is deformed by repeated application of weight on the heel, and can repeatedly and independently return to its original shape. Another aim is to provide a heel structure that can maintain its durability even when repeatedly deformed, and is less likely to break.

上記課題を解決すべく下記の解決手段を講じている。 The following solutions are being implemented to address the above issues:

〔１〕本発明の短靴のヒール構造は、
所定の剛性（弾性係数）の弾性樹脂製の成形体からなる上芯材１と、前記上芯材の所定の剛性よりも小さい剛性の弾性樹脂製の板状体からなる下芯材２と、を上下に組み合わせて構成され、鉛直方向を除く所定の傾斜方向に傾斜しかつ湾曲したヒール壁を有する立体形状をなす組合せ芯材と、
前記上芯材１の前部、上部、及び後部を覆囲するクッション製材を有してなる上部ステー１ＨＬと、
前記上部ステー１ＨＬ及び前記組み合わせ芯材を被覆材で全体被覆すると共に、かかと後部から両側部までを立体的に覆う立体補強部を外被着してなるカウンターヒール３と、
足形のかかと部分の底面及びその周側部を含む履き底面を有して靴底全体を構成するソール板ＭＳとからなる、短靴のヒール構造であって、
前記下芯材２は、
板状体を平面展開した展開面視にて幅方向中央部が突出した山形形状からなる弾性板体の幅方向中央部の上辺に沿って上芯材１の下辺が連結されて組合せ芯材を構成し、
前記組合せ芯材は、
前記下芯材２の山形形状の下辺を、ソール板ＭＳの履き底面の面形状に沿って湾曲させ、前記下芯材２の山形形状の下辺のうち少なくとも左右の接地部２２を、ソール板ＭＳの前記履き底面の周側部に沿った底面上に置き固定した状態で、前記カウンターヒール３の被覆材の内部に収容されることを特徴とする。 [1] The heel structure of the low shoe of the present invention is as follows:
a combined core material having a three-dimensional shape with a heel wall that is inclined in a predetermined inclination direction except the vertical direction and curved; and a lower core material having a three-dimensional shape, the combined core material being constructed by vertically combining an upper core material 1 made of an elastic resin molded body having a predetermined rigidity (elastic modulus) and a lower core material 2 made of an elastic resin plate-like body having a rigidity smaller than the predetermined rigidity of the upper core material;
an upper stay 1HL having a cushion material surrounding the front, upper, and rear parts of the upper core member 1;
a counter heel 3 formed by covering the upper stay 1HL and the combined core material entirely with a covering material and by covering a three-dimensional reinforcing part that three-dimensionally covers the heel from the rear part to both sides;
A heel structure for a low shoe, comprising a sole plate MS having a bottom surface of a heel part of a foot shape and a bottom surface including a peripheral part thereof, and constituting an entire sole of the shoe,
The lower core material 2 is
The lower side of the upper core 1 is connected along the upper side of the widthwise center of the elastic plate having a mountain-like shape with the widthwise center protruding when viewed from a developed surface of the plate-like body, to form a combined core;
The combination core material is
The lower edge of the mountain-shaped shape of the lower core material 2 is curved along the surface shape of the bottom surface of the sole plate MS, and at least the left and right ground contact portions 22 of the mountain-shaped lower edge of the lower core material 2 are placed and fixed on the bottom surface along the peripheral side portion of the bottom surface of the sole plate MS, and are contained inside the covering material of the counter heel 3.

このようにして構成された組合せ芯材は、比較的品啓しにくく且つ外力の大部分を受ける上芯材１と、弾性板状体の立体湾曲材によって弾性変形しやすい下芯材２との連結構造で構成したため、何度踏まれても損壊しにくいものとなった。すなわち、上記構成によって、組合せ芯材は、外力がかからない開放状態にて、所定の（部分錐体からなる）湾曲立体形状を維持することができる。 The combined core material constructed in this way is made up of a connected structure of an upper core material 1, which is relatively difficult to deform and receives most of the external force, and a lower core material 2, which is easily elastically deformed by the three-dimensional curved material of an elastic plate, so it is resistant to damage no matter how many times it is stepped on. In other words, with the above-mentioned structure, the combined core material can maintain a predetermined curved three-dimensional shape (made of a partial cone) in an open state where no external force is applied.

（２）
前記上芯材１の成形体は、
両側部に対して中央部が凹状に湾曲するヘラ凹面１Ｈを上面に有した、ヘラ状の立体成形体からなり、
この立体成形体の下辺の外面に沿って倒立凹形状の連結部１Ｅが形成され、
また、前記下芯材２の板状体は、
展開時山形形状の幅方向中央部の突出部分の内面に、前記連結部１Ｅに対応する、側面断面視にて階段状の段差部２１Ｄが形成され、
上芯材１の連結部１Ｅを、下芯材２の段差部２１Ｄに沿って縫合又は／及び接着することで、
上芯材１のヘラ凹面１Ｈの接平面の法線がいずれも斜め上方を向き、かつ、
上芯材１を覆う上部ステー１ＨＬが、靴の履き口のかかと部の後部を構成すると共にさらにその後方寄りの斜め上方へ延伸して突出形成されることを特徴とする。 (2)
The molded body of the upper core material 1 is
The spatula-shaped three-dimensional molded body has a spatula-shaped concave surface 1H on the upper surface, the central portion of which is curved concavely with respect to both side portions.
A connecting portion 1E having an inverted concave shape is formed along the outer surface of the lower side of this three-dimensional molded body,
In addition, the plate-shaped body of the lower core material 2 is
A step portion 21D having a stepped shape in a side cross-sectional view is formed on the inner surface of the protruding portion in the width direction center of the mountain-shaped shape when unfolded, the step portion 21D corresponding to the connecting portion 1E,
The connecting portion 1E of the upper core material 1 is sewn and/or bonded along the step portion 21D of the lower core material 2,
The normals of the tangent planes of the spatula concave surface 1H of the upper core material 1 all face obliquely upward, and
The upper stay 1HL covering the upper core 1 constitutes the rear part of the heel part of the shoe opening and is formed to extend obliquely upward further rearward and project.

このような上芯材１を内部に有した上部ステー１ＨＬの構造を有することで、使用者のかかとによって踏まれた圧潰状態では、少なくとも前記板状芯材２の左右接地部２２よりも上部の弾性板体が弾性変形すると共に、その際の弾性復帰力によって、上芯材１のヘラ凹面が斜め上方を配向して使用者のかかとを靴内部へすべり誘導するような、誘導を促す力を生じる。そして、前記圧潰状態が弾性復帰した後の開放状態では、組合せ芯材の弾性復帰力によって、上部ステー１Ｈが斜め上方に延伸し且つ使用者のかかとの上部を覆う縦方向よりの傾斜状態に自立復帰する。 By having such a structure of the upper stay 1HL with the upper core material 1 inside, in the crushed state when stepped on by the heel of the user, at least the elastic plate above the left and right ground contact parts 22 of the plate-shaped core material 2 elastically deforms, and the elastic restoring force at that time generates a force that encourages the guide, such as the spatula concave surface of the upper core material 1 orienting diagonally upward and guiding the heel of the user to slide into the inside of the shoe. Then, in the released state after the crushed state has elastically returned to its original state, the elastic restoring force of the combined core material causes the upper stay 1H to extend diagonally upward and independently return to a vertically inclined state that covers the upper part of the user's heel.

（３）前記短靴のヒール構造において、
前記下芯材２の板状体は、前記展開状態の展開面視にて前記山形形状の下辺のうち左右の接地部２２が、外側部に向かって斜め上方に傾斜した、左右対称の傾斜辺からなると共に、
前記山形形状の下辺のうち、左右の接地部２２に挟まれた幅方向中央部の少なくとも一部の幅方向区間が、前記展開状態の展開面視にて切欠き形状部２２Ｄをなし、
組合せ芯材として湾曲変形した立体形状の状態で、この切り欠き形状部２２Ｄが、ソール板ＭＳの底面よりも上方へ離間した中空状態となることを特徴とする。 (3) In the heel structure of the low shoe,
The plate-like body of the lower core material 2 has left and right ground contact portions 22 of the lower side of the mountain shape in the developed surface view in the developed state, which are symmetrically inclined sides inclined obliquely upward toward the outer side, and
At least a part of a width direction section of a width direction center portion of the lower side of the mountain shape sandwiched between the left and right grounding portions 22 forms a notch shape portion 22D when viewed from the development surface in the developed state,
When the combined core material is curved and deformed into a three-dimensional shape, the cutout portion 22D is spaced upward from the bottom surface of the sole plate MS and is in a hollow state.

中央部を非固定部とすることで変形時の潰れ領域となり、埋め込み固定される左右固定部への引張外力の発生を低減することができる。 By making the center part a non-fixed part, it becomes a crushed area during deformation, reducing the occurrence of external tensile forces on the left and right fixed parts that are embedded and fixed.

（４）前記いずれか記載の短靴のヒール構造において、
下部の変形芯材２は、展開状態の展開板面内にて、幅方向に湾曲して左右端付近まで伸びる格子窓列２３１，２３２が、上下２列以上で列形成された板状体からなり、
少なくとも最上列の格子窓列の左右端部の左右の各延長先に、左右の接地部２２が形成されることを特徴とする。 (4) In the heel structure of the low shoe described above,
The lower deformable core material 2 is a plate-like body in which lattice window rows 231, 232 are formed in two or more rows, one above the other, and the rows are curved in the width direction and extend to the left and right ends within the surface of the deployed panel in the deployed state.
A feature of the present invention is that left and right grounding portions 22 are formed at the left and right extension ends of at least the left and right ends of the uppermost lattice window row.

このように構成したことで、圧潰縮時には、複数列の格子窓が変形代となって弾性変形する。格子窓が扇状の複数列からなり、板状パーツが斜め傾斜側面を有して斜めに立固定されるため、元の角度の弾性復帰面を形成しやすい。 With this configuration, when the structure is collapsed, the multiple rows of lattice windows act as deformation margins and elastically deform. Because the lattice windows are made up of multiple fan-shaped rows and the plate-shaped parts have diagonally inclined sides and are fixed at an angle, it is easy to form an elastic return surface to the original angle.

（５）カウンターヒール３は、前記下芯材２の格子窓列の列形成位置に合わせて、外面を湾曲状又は倒立Ｖ字状の折り曲げライン２３１ＢＬ，２３２ＢＬの上辺及び下辺とする切り替え幅ラインを、その上下構成材よりも伸び率の高い延伸材で切り替え構成してなることを特徴とする。 (5) The counter heel 3 is characterized in that the transition width lines, which form the upper and lower edges of the curved or inverted V-shaped folding lines 231BL, 232BL on the outer surface in accordance with the row formation positions of the lattice windows of the lower core material 2, are switched and constructed from an extension material having a higher elongation rate than the upper and lower constituent materials.

実施例１の端靴のヒール部分の内部形状を示す、内部透過の拡大斜視図FIG. 2 is an enlarged perspective view showing the internal shape of the heel portion of the shoe of the first embodiment; 図１の開放状態（ａ）及び変形状態（ｂ）の平面図2 is a plan view of the open state (a) and the deformed state (b) of FIG. 1; ２段階の圧縮状態（ｂ１）（ｂ２）の内部形状を示す、内部透過の拡大斜視図FIG. 1 is an enlarged perspective view of the inside of the mold showing the internal shape in the two-stage compressed state (b1) and (b2). 上芯材１，下芯材２の分解状態の内面構成図。FIG. 2 is an internal structure diagram of the upper core material 1 and the lower core material 2 in an exploded state. 組み合わせ芯材の背面視の内部収容状態図。FIG. 13 is a rear view of the internal storage state of the combined core material. 短靴の使用状態（ａ）（ｂ１）（ｂ２）（ｃ）を示す、側面説明図1A, 1B, 1C, and 1D are side views showing the state in which the low shoes are used.

上記手段を講じることで、繰り返しかかとの体重付与による変形を行っても、ヒール下部の構造自体の弾性復帰力を比較的維持することができ、元の形状にまで繰り返し自立復帰できるヒール構造を提供するものとなった。また、繰り返し変形した場合でも耐久性を維持でき、破損しにくいヒール構造を提供するものとなった。 By taking the above measures, the elastic restoring force of the heel lower structure itself can be relatively maintained even if deformation occurs due to repeated application of weight on the heel, providing a heel structure that can repeatedly and independently return to its original shape. In addition, a heel structure that maintains its durability even when repeatedly deformed and is less likely to break is provided.

以下、本発明を実施するための形態例について図１～６とともに説明する。 Below, an example of an embodiment of the present invention will be described with reference to Figures 1 to 6.

〔１〕本発明の短靴のヒール構造は、
所定の剛性（弾性係数）の弾性樹脂製の成形体からなる上芯材１と、前記上芯材の所定の剛性よりも小さい剛性の弾性樹脂製の板状体からなる下芯材２と、を上下に組み合わせて構成され、鉛直方向を除く所定の傾斜方向に傾斜して部分円筒状又は部分円錐状に湾曲したヒール壁を有する立体形状をなす組合せ芯材と、
前記上芯材１の前部、上部、及び後部を覆囲するクッション製材を有してなる上部ステー１ＨＬと、
前記上部ステー１ＨＬ及び前記組み合わせ芯材を被覆材で全体被覆すると共に、かかと後部から両側部までを立体的に覆う立体補強部を外被着してなるカウンターヒール３と、
足形のかかと部分の底面及びその周側部を含む履き底面を有して靴底全体を構成するソール板ＭＳとからなる、短靴のヒール構造であって、
前記下芯材２は、
板状体を平面展開した展開面視にて幅方向中央部が突出した山形形状からなる弾性板体の幅方向中央部の上辺に沿って上芯材１の下辺が連結されて組合せ芯材を構成し、
前記組合せ芯材は、
前記下芯材２の山形形状の下辺を、ソール板ＭＳの履き底面の面形状に沿って湾曲させ、前記下芯材２の山形形状の下辺のうち少なくとも左右の接地部２２を、ソール板ＭＳの前記履き底面の周側部に沿った底面上に置き固定した状態で、前記カウンターヒール３の被覆材の内部に収容されることを特徴とする。 [1] The heel structure of the low shoe of the present invention is as follows:
a combined core material having a three-dimensional shape with a heel wall that is curved in a partial cylindrical or partial conical shape in a predetermined inclination direction except for the vertical direction, the combined core material being constructed by vertically combining an upper core material 1 made of an elastic resin molded body having a predetermined rigidity (elastic modulus) and a lower core material 2 made of an elastic resin plate-like body having a rigidity smaller than the predetermined rigidity of the upper core material;
an upper stay 1HL having a cushion material surrounding the front, upper, and rear parts of the upper core member 1;
a counter heel 3 formed by covering the upper stay 1HL and the combined core material entirely with a covering material and by covering a three-dimensional reinforcing part that three-dimensionally covers the heel from the rear part to both sides;
A heel structure for a low shoe, comprising a sole plate MS having a bottom surface of a heel part of a foot shape and a bottom surface including a peripheral part thereof, and constituting an entire sole of the shoe,
The lower core material 2 is
The lower side of the upper core 1 is connected along the upper side of the widthwise center of the elastic plate having a mountain-like shape with the widthwise center protruding when viewed from a developed surface of the plate-like body, to form a combined core;
The combination core material is
The lower edge of the mountain-shaped shape of the lower core material 2 is curved along the surface shape of the bottom surface of the sole plate MS, and at least the left and right ground contact portions 22 of the mountain-shaped lower edge of the lower core material 2 are placed and fixed on the bottom surface along the peripheral side portion of the bottom surface of the sole plate MS, and are contained inside the covering material of the counter heel 3.

このようにして構成された組合せ芯材は、比較的品啓しにくく且つ外力の大部分を受ける上芯材１と、弾性板状体の立体湾曲材によって弾性変形しやすい下芯材２との連結構造で構成したため、何度踏まれても損壊しにくいものとなった。 The combined core material constructed in this way is made up of a connected structure consisting of an upper core material 1, which is relatively difficult to manufacture and receives most of the external force, and a lower core material 2, which is easily elastically deformed due to the three-dimensional curved material of the elastic plate, so it is resistant to damage no matter how many times it is stepped on.

より具体的には、ヒール壁及びその上部の芯部を構成する弾性樹脂製の芯材を、剛性の比較的大きい上芯材１と、剛性の比較的小さい下芯材２と、を連結して組み合わせ構成してなることで、使用者のかかとで踏み潰すように靴を履く際、上芯材が踏み潰し時の接触部の受け体の役割を主として果たし、かつ、その下部に連結された下芯材が弾性変形体としての役割を主として果たすことで、使用者のかかとを靴内に収めるのを促す形状に弾性変形する。 More specifically, the core material made of elastic resin that constitutes the heel wall and the core portion above it is constructed by connecting and combining an upper core material 1 with a relatively high rigidity and a lower core material 2 with a relatively low rigidity, so that when the user puts on the shoe by stepping on it with their heel, the upper core material mainly plays the role of a receiver for the contact part when stepping on it, and the lower core material connected to its lower part mainly plays the role of an elastically deformable body, elastically deforming into a shape that encourages the user's heel to fit inside the shoe.

ここで、下芯材２は、弾性材からなる板状体を湾曲させて立体形状に弾性変形させ、弾性反力による内部応力を有した状態でカウンターヒール３の被服材内に収容されている。また、この立体形状は、鉛直方向を除く所定の傾斜方向に傾斜して部分円筒状又は部分円錐状に湾曲したヒール壁を有する形状からなり、全体が平面ではなく部分円筒状又は部分円錐状に連続湾曲してなる。さらに、下芯材の板状体の山形形状の上辺に沿って、より大きい剛性の上芯材の下辺を連結させてなる。これらによって、踏み潰し外力によって弾性変形した場合でも、元の立体形状に弾性復帰しやすく、弾性復帰後は元の立体形状を維持しやすいものとなっている。 Here, the lower core material 2 is housed in the covering material of the counter heel 3 in a state in which it is elastically deformed into a three-dimensional shape by bending a plate-like body made of an elastic material, and has internal stress due to an elastic reaction force. This three-dimensional shape is formed with a heel wall that is curved into a partial cylindrical or conical shape at an inclination in a predetermined inclination direction other than the vertical direction, and is not flat overall but is continuously curved into a partial cylindrical or conical shape. Furthermore, the lower side of the upper core material, which has greater rigidity, is connected along the upper side of the mountain-shaped shape of the plate-like body of the lower core material. As a result, even if it is elastically deformed by an external force caused by crushing, it is likely to elastically return to its original three-dimensional shape, and it is likely to maintain its original three-dimensional shape after elastic return.

すなわち、上記構成によって、組合せ芯材は、外力がかからない開放状態にて、所定の（部分錐体からなる）湾曲立体形状を維持することができる。 In other words, the above configuration allows the combined core material to maintain a predetermined curved three-dimensional shape (consisting of a partial cone) in an open state where no external force is applied.

（２）
前記上芯材１の成形体は、
両側部に対して中央部が凹状に湾曲するヘラ凹面１Ｈを上面に有した、ヘラ状の立体成形体からなり、
この立体成形体の下辺の外面に沿って倒立凹形状の連結部１Ｅが形成され、
また、前記下芯材２の板状体は、
展開時山形形状の幅方向中央部の突出部分の内面に、前記連結部１Ｅに対応する、側面断面視にて階段状の段差部２１Ｄが形成され、
上芯材１の連結部１Ｅを、下芯材２の段差部２１Ｄに沿って縫合又は／及び接着することで、
上芯材１のヘラ凹面１Ｈの法線がいずれも斜め上方を向き、かつ、
上芯材１を覆う上部ステー１ＨＬが、靴の履き口のかかと部の後部を構成すると共にさらにその後方寄りの斜め上方へ延伸して突出形成されることを特徴とする。 (2)
The molded body of the upper core material 1 is
The spatula-shaped three-dimensional molded body has a spatula-shaped concave surface 1H on the upper surface, the central portion of which is curved concavely with respect to both side portions.
A connecting portion 1E having an inverted concave shape is formed along the outer surface of the lower side of this three-dimensional molded body,
In addition, the plate-shaped body of the lower core material 2 is
A step portion 21D having a stepped shape in a side cross-sectional view is formed on the inner surface of the protruding portion in the width direction center of the mountain-shaped shape when unfolded, the step portion 21D corresponding to the connecting portion 1E,
The connecting portion 1E of the upper core material 1 is sewn and/or bonded along the step portion 21D of the lower core material 2,
The normals of the spatula concave surface 1H of the upper core material 1 are all directed obliquely upward, and
The upper stay 1HL covering the upper core 1 constitutes the rear part of the heel part of the shoe opening and is formed to extend obliquely upward further rearward and project.

このような上芯材１を内部に有した上部ステー１ＨＬの構造を有することで、使用者のかかとによって踏まれた圧潰状態では、少なくとも前記板状芯材２の左右接地部２２よりも上部の弾性板体が弾性変形すると共に、その際の弾性復帰力によって、上芯材１のヘラ凹面が斜め上方を配向して使用者のかかとを靴内部へすべり誘導するような、誘導を促す力を生じる。そして、前記圧潰状態が弾性復帰した後の開放状態では、組合せ芯材の弾性復帰力によって、上部ステー１Ｈが斜め上方に延伸し且つ使用者のかかとの上部を覆う縦方向よりの傾斜状態に自立復帰する。 By having such a structure of the upper stay 1HL with the upper core material 1 inside, in the crushed state when stepped on by the heel of the user, at least the elastic plate above the left and right ground contact parts 22 of the plate-shaped core material 2 elastically deforms, and the elastic restoring force at that time generates a force that encourages the guide, such as the spatula concave surface of the upper core material 1 orienting diagonally upward and guiding the heel of the user to slide into the inside of the shoe. Then, in the released state after the crushed state has elastically returned to its original state, the elastic restoring force of the combined core material causes the upper stay 1H to extend diagonally upward and independently return to a vertically inclined state that covers the upper part of the user's heel.

（３）前記短靴のヒール構造において、
前記下芯材２の板状体は、前記展開状態の展開面視にて前記山形形状の下辺のうち左右の接地部２２が、外側部に向かって斜め上方に傾斜した、左右対称の傾斜辺からなると共に、
前記山形形状の下辺のうち、左右の接地部２２に挟まれた幅方向中央部の少なくとも一部の幅方向区間が、前記展開状態の展開面視にて切欠き形状部２２Ｄをなし、
組合せ芯材として湾曲変形した立体形状の状態で、この切り欠き形状部２２Ｄが、ソール板ＭＳの底面よりも上方へ離間した中空状態となることを特徴とする。 (3) In the heel structure of the low shoe,
The plate-like body of the lower core material 2 has left and right ground contact portions 22 of the lower side of the mountain shape in the developed surface view in the developed state, which are symmetrically inclined sides inclined obliquely upward toward the outer side, and
At least a part of a width direction section of a width direction center portion of the lower side of the mountain shape sandwiched between the left and right grounding portions 22 forms a notch shape portion 22D when viewed from the development surface in the developed state,
When the combined core material is curved and deformed into a three-dimensional shape, the cutout portion 22D is spaced upward from the bottom surface of the sole plate MS and is in a hollow state.

前記左右接地部２２が、前記山形形状の下辺のうち、幅方向中央部を除く範囲にてソール板ＭＳ上面に接地した状態で、幅方向中央の切り欠き形状部２２Ｄは、ソール板ＭＳに接触しないですき間を開けた非接地部からなる。この非接地部が、下芯材２の弾性変形時の変形代となって凹み形状に弾性変形し、非接地部の左右の接地部２２の内部応力をきっかけとして弾性復帰する。 When the left and right grounding portions 22 are in contact with the upper surface of the sole plate MS in the range of the lower side of the mountain shape except for the center in the width direction, the notch-shaped portion 22D in the center in the width direction is a non-grounding portion that does not contact the sole plate MS and has a gap. This non-grounding portion becomes a deformation allowance when the lower core material 2 elastically deforms, elastically deforming into a concave shape, and elastically returns to its original state due to the internal stress of the left and right grounding portions 22 of the non-grounding portion.

すなわち、この切り欠き形状部２２Ｄは開放時には中央部が後方へ突出するように凸状湾曲してなるところ、使用者のかかとによって踏まれた場合には、前記板状芯材２の下辺のうち、左右接地部２２を除く幅方向中央部が変形時の潰れ領域となり、上部が凹状の湾曲状態に裏返るように徐々に弾性変形する（図３）。 That is, when the cutout portion 22D is open, the center portion is curved in a convex shape so that it protrudes backward, and when the user steps on it with his heel, the center portion in the width direction of the lower side of the plate-shaped core material 2, excluding the left and right ground contact portions 22, becomes the crushed area when the lower side is deformed, and the upper portion gradually deforms elastically so as to turn inside out into a concave curved state (Figure 3).

前記圧潰状態が解除された開放状態では、湾曲状に立体形状に弾性変形されると共にかかと形状の側面に沿って設置収容された左右の接地部２２を起点とした弾性復帰力によって前記立体形状に自立復帰する。 In the open state where the crushed state has been released, the shoe is elastically deformed into a curved three-dimensional shape and independently returns to the three-dimensional shape due to an elastic restoring force originating from the left and right ground contact parts 22 installed and housed along the sides of the heel shape.

中央部を非固定部とすることで変形時の潰れ領域となり、埋め込み固定される左右固定部への引張外力の発生を低減することができる。 By making the center part a non-fixed part, it becomes a crushed area during deformation, reducing the occurrence of external tensile forces on the left and right fixed parts that are embedded and fixed.

後述の実施例では、山形形状の下辺の左右接地部２２は展開平面視にて斜め方向の直線をなし、ソール板ＭＳ上面のかかと形状の内外側部に沿って形成した埋め込み溝内へ、湾曲状に埋め込み固定される。 In the embodiment described below, the left and right ground contact portions 22 of the lower side of the mountain shape form straight lines in a diagonal direction when viewed in a developed plan view, and are embedded and fixed in a curved shape into embedding grooves formed along the inner and outer parts of the heel shape on the top surface of the sole plate MS.

左右接地部２２を除く山形形状の下辺中央部は切欠き部２２Ｄをなす。立体形状において、切欠き部２２Ｄはソール板と非接触の中空状態をなす。 The center of the bottom side of the mountain shape, excluding the left and right ground contact portions 22, forms a notch 22D. In the three-dimensional shape, the notch 22D is hollow and not in contact with the sole plate.

（４）前記いずれか記載の短靴のヒール構造において、
下部の変形芯材２は、展開状態の展開板面内にて、幅方向に湾曲して左右端付近まで伸びる格子窓列２３１，２３２が、上下２列以上で列形成された板状体からなり、
少なくとも最上列の格子窓列の左右端部の左右の各延長先に、左右の接地部２２が形成されることを特徴とする。 (4) In the heel structure of the low shoe described above,
The lower deformable core material 2 is a plate-like body in which lattice window rows 231, 232 are formed in two or more rows, one above the other, and the rows are curved in the width direction and extend to the left and right ends within the surface of the deployed panel in the deployed state.
A feature of the present invention is that left and right grounding portions 22 are formed at the left and right extension ends of at least the left and right ends of the uppermost lattice window row.

実施例では、中央が突出する山形「ヘ」の字線状の第一、第二格子窓列２３１、２３２，及び、中央下部の横長だ円状の格子窓列２３３からなる全３列の格子窓列が板状面内に形成されると共に、最上列と第２列の各格子窓列２３１，２３２の左右端部の左右の各延長先に、直線状にカットされた傾斜辺からなる左右の接地部２２が形成される。そして、横長だ円状の第三格子窓列２３３は、第一、第二格子窓列２３１、２３２よりも半分以下の幅で中央下部に小区画形成されると共に、この第三格子窓列２３３の下部であって板状体の下辺の中央区画の下辺中央部に前記切欠き部２２Ｄが形成される。 In the embodiment, a total of three lattice window rows are formed within the plate surface, consisting of the first and second lattice window rows 231, 232, which are in the shape of a mountain-shaped "H" protruding in the center, and the horizontally elongated elliptical lattice window row 233 in the lower center, and the left and right grounding sections 22, which are made of linearly cut inclined sides, are formed at the left and right extensions of the left and right ends of the top and second lattice window rows 231, 232. The horizontally elongated elliptical third lattice window row 233 is formed in a small section in the lower center with a width less than half that of the first and second lattice window rows 231, 232, and the notch 22D is formed in the lower part of the third lattice window row 233, in the center of the lower side of the central section of the lower side of the plate body.

このように構成したことで、圧潰縮時には、複数列の格子窓が変形代となって弾性変形する。格子窓が扇状の複数列からなり、板状パーツが斜め傾斜側面を有して斜めに立固定されるため、元の角度の弾性復帰面を形成しやすい。 With this configuration, when the structure is collapsed, the multiple rows of lattice windows act as deformation margins and elastically deform. Because the lattice windows are made up of multiple fan-shaped rows and the plate-shaped parts have diagonally inclined sides and are fixed at an angle, it is easy to form an elastic return surface to the original angle.

板状体下辺中央２２Dが中空に浮いた非接着区間に設定され、板状パーツの中央部の可変両端２２が底板に埋め込み固定されて、底板上に、底板の中央寄りに向かって斜め傾斜した円錐側面を有した向きで立設固定されてなる。 The center 22D of the bottom edge of the plate-like body is set as a non-adhesive section floating in the air, and both variable ends 22 of the center of the plate-like part are embedded and fixed in the bottom plate, and the plate-like part is fixed upright on the bottom plate in an orientation with a conical side surface that is inclined diagonally toward the center of the bottom plate.

（５）カウンターヒール３は、前記下芯材２の格子窓列の列形成位置に合わせて、外面を湾曲又は倒立Ｖ字状の折り曲げライン２３１ＢＬ，２３２ＢＬの上辺及び下辺とする切り替え幅ラインを、その上下構成材よりも伸び率の高い延伸材で切り替え構成してなることを特徴とする。 (5) The counter heel 3 is characterized in that the outer surface is curved or the upper and lower edges of the inverted V-shaped folding lines 231BL, 232BL are switched and configured with an extension material having a higher elongation rate than the upper and lower constituent materials in accordance with the row formation position of the lattice window row of the lower core material 2.

前記カウンターヒールは、剛性の低い柔軟布で構成した切り替え幅ラインを、折り曲げライン２３１ＢＬ，２３２ＢＬに沿って形成してなる。折り曲げライン２３１ＢＬ，２３２ＢＬで折り曲げ変形することで、カウンターヒールの切り替え幅ライン上辺、下辺が折り曲がって潰れる。 The counter heel is formed by forming a transition width line made of a soft fabric with low rigidity along the folding lines 231BL and 232BL. By bending and deforming at the folding lines 231BL and 232BL, the upper and lower sides of the transition width line of the counter heel are folded and crushed.

前記いずれか記載の短靴のヒール構造において、
上ヘラ芯材１は下部の変形芯材２よりも厚手の高剛性体の凹湾曲状の立体成形体からなり、立体成形体の凹湾曲面が斜め上を向いた状態で、変形芯材の上部の切り欠きに嵌入縫合される（図４a）。 In any one of the above-described heel structures of the low shoes,
The upper spatula core 1 is made of a concavely curved, highly rigid three-dimensional molded body that is thicker than the lower deformable core 2, and is fitted and sewn into the notch at the top of the deformable core with the concave curved surface of the three-dimensional molded body facing diagonally upwards (Figure 4a).

踏み変形した状態では、下部の芯材が圧縮変形することで、上部の立体成形体の凹湾曲面が水平よりの上方を向いた状態に方向を変え、かかとの踏み代となることを特徴とする。 When the shoe is stepped on and deformed, the lower core material undergoes compressive deformation, causing the concave curved surface of the upper three-dimensional molded body to change direction and face upward from the horizontal, providing a space for the heel to step on.

その他、本発明は上記の実施形態に限らず種々の変形が可能である。要素ごとの組合せ、一部要素の抽出、部品ごとへの分解構成或いは一体構成も可能である。
 In addition, the present invention is not limited to the above-described embodiment, and various modifications are possible. Combinations of elements, extraction of some elements, disassembly into parts, or integration are also possible.

Claims (5)

所定の剛性の弾性樹脂製の成形体からなる上芯材と、前記上芯材の所定の剛性よりも小さい剛性の弾性樹脂製の板状体からなる下芯材と、を上下に組み合わせて構成され、鉛直方向を除く所定の傾斜方向に傾斜しかつ湾曲したヒール壁を有する立体形状をなす組合せ芯材と、
前記上芯材の前部、上部、及び後部を覆囲するクッション製材を有してなる上部ステーと、
前記上部ステー及び前記組み合わせ芯材を被覆材で全体被覆すると共に、かかと後部から両側部までを立体的に覆う立体補強部を外被着してなるカウンターヒールと、
足形のかかと部分の底面及びその周側部を含む履き底面を有して靴底全体を構成するソール板とからなる、短靴のヒール構造であって、
前記下芯材は、
板状体を平面展開した展開面視にて幅方向中央部が突出した山形形状からなる弾性板体の幅方向中央部の上辺に沿って上芯材の下辺が連結されて組合せ芯材を構成し、
前記組合せ芯材は、
前記下芯材の山形形状の下辺を、ソール板の履き底面の面形状に沿って湾曲させ、前記下芯材の山形形状の下辺のうち少なくとも左右の接地部を、ソール板の前記履き底面の周側部に沿った底面上に置き固定した状態で、前記カウンターヒールの被覆材の内部に収容されることを特徴とする、短靴のヒール構造。 a combined core material having a three-dimensional shape with a heel wall that is inclined in a predetermined inclination direction except the vertical direction and curved , the combined core material being constructed by vertically combining an upper core material made of an elastic resin molded body having a predetermined rigidity and a lower core material made of an elastic resin plate-like body having a rigidity smaller than the predetermined rigidity of the upper core material;
an upper stay having a cushion material surrounding the front, upper, and rear portions of the upper core ;
a counter heel which is entirely covered with a covering material on the upper stay and the combined core material, and is covered with a three-dimensional reinforcing part which three-dimensionally covers the heel from the rear part to both sides;
A heel structure for a low shoe, comprising a sole plate having a bottom surface of a heel part of a foot shape and a bottom surface including a peripheral part thereof, and constituting the entire sole,
The lower core material is
The lower edge of the upper core material is connected along the upper edge of the widthwise center portion of the elastic plate having a mountain-like shape with the widthwise center portion protruding when viewed from a developed surface of the plate-like body when developed in a plane, to form a combined core material;
The combination core material is
This heel structure for a low shoe is characterized in that the lower edge of the mountain-shaped lower core material is curved along the surface shape of the bottom surface of the sole plate , and at least the left and right ground contact portions of the mountain -shaped lower edge of the lower core material are placed and fixed on the bottom surface along the peripheral portion of the bottom surface of the sole plate, and is contained inside the covering material of the counter heel . 前記上芯材の成形体は、
両側部に対して中央部が凹状に湾曲するヘラ凹面を上面に有した、ヘラ状の立体成形体からなり、
この立体成形体の下辺の外面に沿って倒立凹形状の連結部が形成され、
また、前記下芯材の板状体は、
展開時山形形状の幅方向中央部の突出部分の内面に、前記連結部に対応する、側面断面視にて階段状の段差部が形成され、
上芯材の連結部を、下芯材の段差部に沿って縫合又は／及び接着することで、
上芯材のヘラ凹面の接平面の法線がいずれも斜め上方を向き、かつ、
上芯材を覆う上部ステーが、靴の履き口のかかと部の後部を構成すると共にさらにその後方寄りの斜め上方へ延伸して突出形成されることを特徴とする、請求項１に記載の短靴のヒール構造。 The molded body of the upper core material is
The spatula-shaped three-dimensional molded body has a spatula-shaped concave surface on the upper surface, the central portion of which is concavely curved with respect to both side portions,
A connecting portion having an inverted concave shape is formed along the outer surface of the lower side of the three-dimensional molded body,
In addition, the plate-shaped body of the lower core material is
A step-like portion is formed on the inner surface of the protruding portion of the width direction center of the mountain-shaped shape when deployed, the step-like portion being shaped like a staircase in a side cross-sectional view and corresponding to the connecting portion ;
The connecting portion of the upper core material is sewn and/or glued along the step portion of the lower core material ,
The normals of the tangent planes of the spatula concave surface of the upper core material all face diagonally upward, and
2. The heel structure of claim 1, wherein the upper stay covering the upper core constitutes the rear part of the heel of the shoe opening and is formed to extend obliquely upward toward the rear of the upper stay and protrude. 前記下芯材の板状体は、前記展開状態の展開面視にて前記山形形状の下辺のうち左右の接地部２２が、外側部に向かって斜め上方に傾斜した、左右対称の傾斜辺からなると共に、
前記山形形状の下辺のうち、左右の接地部に挟まれた幅方向中央部の少なくとも一部の幅方向区間が、前記展開状態の展開面視にて切欠き形状部をなし、
組合せ芯材として湾曲変形した立体形状の状態で、この切り欠き形状部が、ソール板の底面よりも上方へ離間した中空状態となることを特徴とする、請求項２に記載の短靴のヒール構造。 The plate-like body of the lower core material has left and right ground contact portions 22 of the lower side of the mountain shape in the developed surface view in the developed state, which are symmetrically inclined sides inclined obliquely upward toward the outer side, and
At least a part of a width direction section of a width direction central portion of the lower side of the mountain shape between the left and right grounding portions forms a notch shape portion when viewed from the development surface in the developed state,
3. The heel structure for a low shoe according to claim 2, wherein the cutout portion is spaced above the bottom surface of the sole plate and is hollow when the combined core material is curved and deformed into a three-dimensional shape. 下芯材は、展開状態の展開板面内にて、幅方向に湾曲して左右端付近まで伸びる格子窓列が、上下２列以上で列形成された板状体からなり、
少なくとも最上列の格子窓列の左右端部の左右の各延長先に、左右の接地部が形成されることを特徴とする、請求項１に記載の短靴のヒール構造。 The lower core material is a plate-like body having two or more rows of lattice windows, each row extending in a width direction and extending to the left and right ends, formed on the surface of the deployed panel in the deployed state;
2. The heel structure of claim 1, wherein left and right ground contact portions are formed at left and right extensions of the left and right ends of at least the topmost lattice window row. 前記カウンターヒールは、前記下芯材の格子窓列の列形成位置に合わせて、外面を湾曲状又は倒立Ｖ字状の折り曲げラインの上辺及び下辺とする切り替え幅ラインを、その上下構成材よりも伸び率の高い延伸材で切り替え構成してなることを特徴とする、請求項４記載の短靴のヒール構造。 5. The heel structure of a low shoe according to claim 4, characterized in that the counter heel is constructed by switching a transition width line, which is the upper and lower sides of a curved or inverted V-shaped bending line on the outer surface, to match the row formation position of the lattice window row of the lower core material, with an extension material having a higher elongation rate than the upper and lower constituent materials.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021192839A (en) 2016-10-26 2021-12-23 ナイキ イノベイト シーブイ Footwear heel spring device
JP2022514060A (en) 2018-12-21 2022-02-09 ナイキ イノベイト シーブイ Shoes with asymmetric ankle collar
WO2022130537A1 (en) 2020-12-16 2022-06-23 株式会社アシックス Shoe
JP3242065U (en) 2023-03-27 2023-05-24 京男 呉 elastic heels and shoes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021192839A (en) 2016-10-26 2021-12-23 ナイキ イノベイト シーブイ Footwear heel spring device
JP2022514060A (en) 2018-12-21 2022-02-09 ナイキ イノベイト シーブイ Shoes with asymmetric ankle collar
WO2022130537A1 (en) 2020-12-16 2022-06-23 株式会社アシックス Shoe
JP3242065U (en) 2023-03-27 2023-05-24 京男 呉 elastic heels and shoes

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