WO2009125888A1 - Functional shoe - Google Patents

Functional shoe Download PDF

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Publication number
WO2009125888A1
WO2009125888A1 PCT/KR2008/002083 KR2008002083W WO2009125888A1 WO 2009125888 A1 WO2009125888 A1 WO 2009125888A1 KR 2008002083 W KR2008002083 W KR 2008002083W WO 2009125888 A1 WO2009125888 A1 WO 2009125888A1
Authority
WO
WIPO (PCT)
Prior art keywords
midsole
sole
shoe
wearer
walking
Prior art date
Application number
PCT/KR2008/002083
Other languages
French (fr)
Inventor
Oh Ryen Kwak
Original Assignee
Oh Ryen Kwak
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oh Ryen Kwak filed Critical Oh Ryen Kwak
Priority to JP2010539273A priority Critical patent/JP2011506034A/en
Priority to CN200880128405.6A priority patent/CN102123620B/en
Publication of WO2009125888A1 publication Critical patent/WO2009125888A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/143—Soles; Sole-and-heel integral units characterised by the constructive form provided with wedged, concave or convex end portions, e.g. for improving roll-off of the foot
    • A43B13/145—Convex portions, e.g. with a bump or projection, e.g. 'Masai' type shoes
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/143—Soles; Sole-and-heel integral units characterised by the constructive form provided with wedged, concave or convex end portions, e.g. for improving roll-off of the foot
    • A43B13/146—Concave end portions, e.g. with a cavity or cut-out portion
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/143—Soles; Sole-and-heel integral units characterised by the constructive form provided with wedged, concave or convex end portions, e.g. for improving roll-off of the foot
    • A43B13/148—Wedged end portions

Definitions

  • the present invention relates to a functional shoe that is configured to have an outsole and a midsole each having an inclined part inclined upwardly in a lengthwise direction toward a front sole on which a toe part is located from a back sole on which a heel part is located, and more particularly, to a functional shoe that provides stable and balanced landing on the ground to a wearer during his or her walking, provides comfortable walking to the wearer through the natural movement of his or her weight by the formation of the inclined angle of the midsole even though no strength is applied to his or her legs, develops his or her lower body muscles to allow his or her exercise quantity to be increased, and at the same time improves his or her endurance, driving force, and being quick in action.
  • Background Art
  • [2] Masia type shoes that are most popular in recent days are one type of functional walking shoes designed to reduce the fatigue of a wearer's foot.
  • a variety of functional walking shoes are disclosed in Korean Patent Nos.10-800060, 10-786556 and 10-8000061.
  • the functional walking shoes are configured wherein a front sole on which a toe part is located and a back sole on which a heel part is located are formed higher to heights h and h than the center portion of an outsole bottom surface.
  • the conventional masia type functional walking shoes do not cause any problems during walking on flat roads, but have an unstable landing point on the center portion of the outsole bottom surface during walking on slant surfaces or stairs, which makes a wearer's body unbalanced to apply much strength to his or her legs. Thus, his or her legs become easily fatigued, and his or her walking operation for next steps is not stabilized.
  • Korean Patent No.10-533575 in order to reduce the fatigue of a wearer's foot, as shown in FIG.2, wherein a functional shoe includes a heel part on which a midsole 100 is horizontally formed, a horizontally formed toe part, and an inclined part gently inclined upwardly from the heel part toward the toe part.
  • a toe cap 200 since a toe cap 200 is relatively high in height, it often collides against the ground during walking, thereby making it impossible for the wearer to perform natural walking.
  • the present invention has been made to solve the above problems occurring in the prior arts, and it is an object of the present invention to provide a functional shoe that is configured to have an outsole and a midsole each having an inclined part inclined upwardly in a lengthwise direction toward a front sole on which a toe part is located from a back sole on which a heel part is located, thereby providing stable and balanced landing on the ground to a wearer during his or her walking, provides comfortable walking to the wearer through the natural movement of his or her weight by the formation of the inclined angle of the midsole even though no strength is applied to his or her legs, develops his or her lower body muscles to allow his or her exercise quantity to be increased, and at the same time improves his or her endurance, driving force, and being quick in action.
  • a functional shoe having a shoe sole and an upper, wherein the shoe sole includes an outsole and a midsole each having an inclined part inclined upwardly in a lengthwise direction toward a front sole on which a toe part is located from a back sole on which a heel part is located.
  • the outsole has the inclined part having a linear shape and inclined upwardly in the lengthwise direction from the back sole to the front sole
  • the midsole has the inclined part having a substantially gently linear shape and inclined upwardly in the lengthwise direction from the heel part toward the toe part.
  • a functional shoe that is configured to have an outsole and a midsole each having an inclined part inclined upwardly in a lengthwise direction toward a front sole on which a toe part is located from a back sole on which a heel part is located, thereby providing stable and balanced landing on the ground to a wearer during his or her walking, providing comfortable walking to the wearer through the natural movement of his or her weight by the formation of the inclined angle of the midsole even though no strength is applied to his or her legs, developing his or her lower body muscles to allow his or her exercise quantity to be increased, and at the same time improving his or her endurance, driving force, and being quick in action.
  • FIG.l is a cross-sectional view showing a functional shoe having an outsole proposed for walking in the prior art.
  • FIG.2 is a cross-sectional view showing a functional shoe having a midsole proposed for walking in another prior art.
  • FIG.3 is a side view showing a functional shoe provided according to the technical features of the present invention.
  • FIG.4 is a cross-sectional view showing the functional shoe having an outsole and a midsole according to the present invention.
  • FIG.5 is a perspective view showing the configuration of the midsole of the functional shoe according to the present invention. Best Mode for Carrying Out the Invention
  • a functional shoe having a shoe sole and an upper, wherein the shoe sole includes an outsole and a midsole each having an inclined part inclined upwardly in a lengthwise direction toward a front sole on which a toe part is located from a back sole on which a heel part is located.
  • the functional shoe provides stable and balanced landing on the ground to a wearer during his or her walking since the bottom surface of the back sole is horizontally formed, provides comfortable walking to the wearer through the natural movement of his or her weight by the formation of the inclined angle of the midsole even though no strength is applied to his or her legs, develops his or her lower body muscles to allow his or her exercise quantity to be increased, and at the same time improves his or her endurance, driving force, and being quick in action.
  • the terms 'front sole' and 'back sole' refers to a point at which the upwardly inclined part of the front sole connected to the back sole starts, and the sole on which the toe part is located at the front of the point is called the front sole OFL and the sole on which the heel part is located at the rear of the point is called the back sole OBL.
  • the toe part is defined by the part of the shoe sole against which the toes abut
  • the heel part is defined by the part of the shoe sole against which the heel abuts.
  • the toe part of the body denotes the sole of foot corresponding to phalanges
  • the foot arch of the body denotes the sole of foot corresponding to a metatarsal bone
  • the heel part of the body denotes the sole of foot corresponding to a tarsal bone.
  • the toe part of the functional shoe is the upper surface of the shoe sole on which the toe part of the body is placed
  • the inclined part thereof is the upper surface of the shoe sole on which the foot arch of the body is placed
  • the heel part thereof is the upper surface of the shoe sole on which the heel part of the body is placed.
  • FIG.3 is a side view showing a functional shoe provided according to the technical features of the present invention
  • FIG.4 is a cross-sectional view showing the functional shoe having an outsole and a midsole according to the present invention
  • FIG.5 is a perspective view showing the configuration of the midsole of the functional shoe according to the present invention.
  • a functional shoe having a shoe sole having an underside surface to be placed on the ground while a wearer is walking and an upper surface on which the wearer's foot sole is placed and an upper adapted to be coupled to the shoe sole so as to entirely surround the wearer's toes, heel, dorsum and ankle, wherein the shoe sole includes an outsole 10 and a midsole 20 each having an inclined part inclined upwardly in a lengthwise direction toward a front sole on which a toe part is located from a back sole on which a heel part is located.
  • the functional shoe provides stable and balanced landing on the ground to a wearer during his or her walking since the bottom surface of the back sole is horizontally formed and provides comfortable walking to the wearer through the natural movement of his or her weight by the formation of the inclined angle of the midsole even though no strength is applied to his or her legs.
  • the outsole 10 has the inclined part having a linear shape and inclined upwardly in a lengthwise direction toward the front sole OFL from the back sole OBL.
  • the inclined part is formed at a point on which the ratio of the length OBL of the back sole to the length OFL of the front sole OFL relative to the whole length OL of the outsole 10 is 53 to 56 : 44 to 47, and it desirably has an upwardly inclined angle ⁇ in a range of 13°to 17°.
  • the inclined part is formed over the whole length OFL of the front sole.
  • the position on which the inclined part is formed and the size of the inclined part are designed ergonomically, and if the formation point of the inclined part is formed at the front side of the above-defined range or if the inclined angle of the inclined part is relatively small, the balance of the wearer's body is stably obtained when his or her foot lands on the ground.
  • the inclined angle of the front sole is substantially small, a natural elastic operation is not performed upon walking to bring much strength to his or her legs.
  • the formation point of the inclined part is formed at the rear side of the above-defined range or if the inclined angle of the inclined part is relatively large, much strength is applied to the wearer's leg for a next step and the balance of the wearer's body is unstable when his or her foot lands on the ground during walking, which makes him or her easily feel fatigued.
  • the midsole 20 of the functional shoe according to the present invention is an improvement of the structure of the midsole in the functional shoe disclosed in Korean Patent Registration No.10-533575 and issued to the same inventor as in the present inventor, which is designed in order to greatly reduce a wearer's fatigue caused by walking.
  • the midsole 20 of the functional shoe according to the present invention has the inclined part having a linear shape and gently inclined upwardly in a lengthwise direction from a heel part 23 toward a toe part 21.
  • the ratio of the length MTL of the toe part 21 to the length ML of the midsole 20 is 0.2 to 0.3 : 1.
  • the wearer's foot arch is placed on both of the toe part 21 and the inclined part 22 of the midsole 20, thereby making the wearer feel uncomfortable during walking, and contrarily, if the length MTL of the toe part 21 is more than 0.3, the wearer's toe part is placed continuously on the toe part 21 and the inclined part 22 of the midsole 20, thereby making the wearer feel uncomfortable during walking.
  • the ratio of the length MHL of the heel part 23 to the length ML of the midsole 20 is 0.15 to 0.21 : 1. If the length MHL of the heel part 23 is less than 0.15, the wearer's heel part corresponding to the tarsal bone among the bones constituting a foot does not abut against the heel part 23 of the midsole 20, but it abuts against both of the inclined part 22 and the heel part 23 of the midsole 20, thereby making the wearer feel uncomfortable during walking. Contrarily, if the length MHL of the heel part 23 is more than 0.21, the wearer's foot arch is placed on both of the inclined part 22 and the heel part 23 of the midsole 20, thereby making the wearer feel uncomfortable during walking.
  • the midsole 20 has the inclined part having a substantially gently linear shape and inclined upwardly from the heel part 23 toward the toe part 21, the inclined part having an inclined angle ⁇ in a range of 2.5°to 4.0°.
  • the inclined angle formed on the midsole 20 is good for the wearer's walking and exercising, and therefore, even though he or she walks or exercises for long hours, he or she effectively obtains the increment in a quantity of his or her exercise, without giving any load to his or her Achilles tendon.
  • the inclined angle ⁇ of the inclined part 22 is less than 2.5°, the relaxing degree of the Achilles tendon is very slight to obtain a relatively small quantity of exercise, which does not satisfy people's demand of effectively increasing their exercise quantity through easy exercise normal times, and contrarily, if the inclined angle ⁇ of the inclined part 22 is more than 4.0°, the relaxing degree of the Achilles tendon is very high to obtain a relatively large quantity of exercise, but there occur some problems that the wearer does not feel comfortable during walking, he or she loses his balance and falls down, and much load is applied to his or her Achilles tendon.
  • the outsole 10 and the midsole 20 used in the present invention are formed of a commercially available material for shoes, preferably, for example, polyurethane PU or an EVA foam. If they are formed of foam having physical properties equivalent to the above-mentioned foam, it does not matter.
  • the functional shoe according to the present invention is configured er- gonomically to have the outsole 10 and the midsole 20 each having the toe part 21 gently more inclined upwardly than the heel part 23, thereby providing stable and balanced landing on the ground to a wearer during his or her walking, providing comfortable walking to the wearer through the natural movement of his or her weight by the formation of the inclined angle of the midsole, developing his or her lower body muscles to allow his or her exercise quantity to be increased, and at the same time improving his or her endurance, driving force, and being quick in action.
  • the functional shoe that is configured to have the outsole and the midsole each having the inclined part inclined upwardly in the lengthwise direction toward the front sole on which the toe part is located from the back sole on which the heel part is located.
  • the outsole has the inclined part having a linear shape and inclined upwardly in the lengthwise direction from the back sole to the front sole
  • the midsole has the inclined part having a substantially gently linear shape and gently inclined upwardly in the lengthwise direction from the heel part toward the toe part.
  • the functional shoe that is configured to have the outsole and the midsole each having the inclined part inclined upwardly in the lengthwise direction toward the front sole on which the toe part is located from the back sole on which the heel part is located, thereby providing stable and balanced landing on the ground to a wearer during his or her walking, providing comfortable walking to the wearer through the natural movement of his or her weight by the formation of the inclined angle of the midsole even though no strength is applied to his or her legs, developing his or her lower body muscles to allow his or her exercise quantity to be increased, and at the same time improving his or her endurance, driving force, and being quick in action.

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  • Finger-Pressure Massage (AREA)

Abstract

The present invention relates to a functional shoe having a shoe sole and an upper, wherein the shoe sole includes an outsole and a midsole each having an inclined part inclined upwardly in a lengthwise direction toward a front sole on which a toe part is located from a back sole on which a heel part is located. The functional shoe provides stable and balanced landing on the ground to a wearer during his or her walking, provides comfortable walking to the wearer through the natural movement of his or her weight by the formation of the inclined angle of the midsole even though no strength is applied to his or her legs, develops his or her lower body muscles to allow his or her exercise quantity to be increased, and at the same time improves his or her endurance, driving force, and being quick in action.

Description

Description FUNCTIONAL SHOE
Technical Field
[1] The present invention relates to a functional shoe that is configured to have an outsole and a midsole each having an inclined part inclined upwardly in a lengthwise direction toward a front sole on which a toe part is located from a back sole on which a heel part is located, and more particularly, to a functional shoe that provides stable and balanced landing on the ground to a wearer during his or her walking, provides comfortable walking to the wearer through the natural movement of his or her weight by the formation of the inclined angle of the midsole even though no strength is applied to his or her legs, develops his or her lower body muscles to allow his or her exercise quantity to be increased, and at the same time improves his or her endurance, driving force, and being quick in action. Background Art
[2] Masia type shoes that are most popular in recent days are one type of functional walking shoes designed to reduce the fatigue of a wearer's foot. A variety of functional walking shoes are disclosed in Korean Patent Nos.10-800060, 10-786556 and 10-8000061. According to the prior art, as shown in FIG.l, the functional walking shoes are configured wherein a front sole on which a toe part is located and a back sole on which a heel part is located are formed higher to heights h and h than the center portion of an outsole bottom surface. The conventional masia type functional walking shoes do not cause any problems during walking on flat roads, but have an unstable landing point on the center portion of the outsole bottom surface during walking on slant surfaces or stairs, which makes a wearer's body unbalanced to apply much strength to his or her legs. Thus, his or her legs become easily fatigued, and his or her walking operation for next steps is not stabilized.
[3] On the other hand, the present inventor has proposed Korean Patent No.10-533575 in order to reduce the fatigue of a wearer's foot, as shown in FIG.2, wherein a functional shoe includes a heel part on which a midsole 100 is horizontally formed, a horizontally formed toe part, and an inclined part gently inclined upwardly from the heel part toward the toe part. According to the prior art, however, since a toe cap 200 is relatively high in height, it often collides against the ground during walking, thereby making it impossible for the wearer to perform natural walking.
[4] In order to solve the above-mentioned problems, the present inventor proposes a functional shoe having an improved outsole and midsole structure and having the toe cap lowered in height. Disclosure of Invention
Technical Problem
[5] Accordingly, the present invention has been made to solve the above problems occurring in the prior arts, and it is an object of the present invention to provide a functional shoe that is configured to have an outsole and a midsole each having an inclined part inclined upwardly in a lengthwise direction toward a front sole on which a toe part is located from a back sole on which a heel part is located, thereby providing stable and balanced landing on the ground to a wearer during his or her walking, provides comfortable walking to the wearer through the natural movement of his or her weight by the formation of the inclined angle of the midsole even though no strength is applied to his or her legs, develops his or her lower body muscles to allow his or her exercise quantity to be increased, and at the same time improves his or her endurance, driving force, and being quick in action. Technical Solution
[6] To achieve the above object, according to the present invention, there is provided a functional shoe having a shoe sole and an upper, wherein the shoe sole includes an outsole and a midsole each having an inclined part inclined upwardly in a lengthwise direction toward a front sole on which a toe part is located from a back sole on which a heel part is located.
[7] At this time, the outsole has the inclined part having a linear shape and inclined upwardly in the lengthwise direction from the back sole to the front sole, and the midsole has the inclined part having a substantially gently linear shape and inclined upwardly in the lengthwise direction from the heel part toward the toe part.
Advantageous Effects
[8] According to the present invention, there is provided a functional shoe that is configured to have an outsole and a midsole each having an inclined part inclined upwardly in a lengthwise direction toward a front sole on which a toe part is located from a back sole on which a heel part is located, thereby providing stable and balanced landing on the ground to a wearer during his or her walking, providing comfortable walking to the wearer through the natural movement of his or her weight by the formation of the inclined angle of the midsole even though no strength is applied to his or her legs, developing his or her lower body muscles to allow his or her exercise quantity to be increased, and at the same time improving his or her endurance, driving force, and being quick in action. Brief Description of the Drawings
[9] FIG.l is a cross-sectional view showing a functional shoe having an outsole proposed for walking in the prior art. [10] FIG.2 is a cross-sectional view showing a functional shoe having a midsole proposed for walking in another prior art.
[11] FIG.3 is a side view showing a functional shoe provided according to the technical features of the present invention.
[12] FIG.4 is a cross-sectional view showing the functional shoe having an outsole and a midsole according to the present invention.
[13] FIG.5 is a perspective view showing the configuration of the midsole of the functional shoe according to the present invention. Best Mode for Carrying Out the Invention
[14] According to the present invention, there is provided a functional shoe having a shoe sole and an upper, wherein the shoe sole includes an outsole and a midsole each having an inclined part inclined upwardly in a lengthwise direction toward a front sole on which a toe part is located from a back sole on which a heel part is located.
[15] According to the present invention, the functional shoe provides stable and balanced landing on the ground to a wearer during his or her walking since the bottom surface of the back sole is horizontally formed, provides comfortable walking to the wearer through the natural movement of his or her weight by the formation of the inclined angle of the midsole even though no strength is applied to his or her legs, develops his or her lower body muscles to allow his or her exercise quantity to be increased, and at the same time improves his or her endurance, driving force, and being quick in action.
[16] As used herein, the terms 'front sole' and 'back sole' refers to a point at which the upwardly inclined part of the front sole connected to the back sole starts, and the sole on which the toe part is located at the front of the point is called the front sole OFL and the sole on which the heel part is located at the rear of the point is called the back sole OBL. Further, the toe part is defined by the part of the shoe sole against which the toes abut, and the heel part is defined by the part of the shoe sole against which the heel abuts.
[17] According to the present invention, for the convenience of the description, the toe part and the heel part are shown in detail relative to the midsole in the attached drawings, but it should be appreciated that the toe part and the heel part on the outsole are formed to correspond with those on the midsole.
[18] In the present invention, the toe part of the body denotes the sole of foot corresponding to phalanges, the foot arch of the body denotes the sole of foot corresponding to a metatarsal bone, and the heel part of the body denotes the sole of foot corresponding to a tarsal bone. Further, the toe part of the functional shoe is the upper surface of the shoe sole on which the toe part of the body is placed, the inclined part thereof is the upper surface of the shoe sole on which the foot arch of the body is placed, and the heel part thereof is the upper surface of the shoe sole on which the heel part of the body is placed.
[19] Hereinafter, an explanation on the configuration of a functional shoe according to the present invention will be given with reference to the attached drawings.
[20] In the attached drawings and the description of the invention, especially, the detailed technical configuration and operation on the parts not directly related to the technical features of this invention will not be described, and only the technical configuration related to this invention will be simply illustrated or explained. Further, in the attached drawings, the size ratios among the parts are a little different or the sizes of the assembled parts are different from each other, but since the differences in the drawings are easily understood by those skilled in the art, an explanation on them will be avoided in the description of this invention.
[21] FIG.3 is a side view showing a functional shoe provided according to the technical features of the present invention, FIG.4 is a cross-sectional view showing the functional shoe having an outsole and a midsole according to the present invention, and FIG.5 is a perspective view showing the configuration of the midsole of the functional shoe according to the present invention.
[22] According to the present invention, there is provided a functional shoe having a shoe sole having an underside surface to be placed on the ground while a wearer is walking and an upper surface on which the wearer's foot sole is placed and an upper adapted to be coupled to the shoe sole so as to entirely surround the wearer's toes, heel, dorsum and ankle, wherein the shoe sole includes an outsole 10 and a midsole 20 each having an inclined part inclined upwardly in a lengthwise direction toward a front sole on which a toe part is located from a back sole on which a heel part is located.
[23] According to the present invention, therefore, the functional shoe provides stable and balanced landing on the ground to a wearer during his or her walking since the bottom surface of the back sole is horizontally formed and provides comfortable walking to the wearer through the natural movement of his or her weight by the formation of the inclined angle of the midsole even though no strength is applied to his or her legs.
[24] An explanation of the configuration of the outsole in the functional shoe according to the present invention will be in detail given with reference to the attached drawings.
[25] The outsole 10 has the inclined part having a linear shape and inclined upwardly in a lengthwise direction toward the front sole OFL from the back sole OBL. The inclined part is formed at a point on which the ratio of the length OBL of the back sole to the length OFL of the front sole OFL relative to the whole length OL of the outsole 10 is 53 to 56 : 44 to 47, and it desirably has an upwardly inclined angle α in a range of 13°to 17°. In the preferred embodiment of the present invention, the inclined part is formed over the whole length OFL of the front sole.
[26] The position on which the inclined part is formed and the size of the inclined part are designed ergonomically, and if the formation point of the inclined part is formed at the front side of the above-defined range or if the inclined angle of the inclined part is relatively small, the balance of the wearer's body is stably obtained when his or her foot lands on the ground. However, the inclined angle of the front sole is substantially small, a natural elastic operation is not performed upon walking to bring much strength to his or her legs. Moreover, if the formation point of the inclined part is formed at the rear side of the above-defined range or if the inclined angle of the inclined part is relatively large, much strength is applied to the wearer's leg for a next step and the balance of the wearer's body is unstable when his or her foot lands on the ground during walking, which makes him or her easily feel fatigued.
[27] Next, an explanation on the configuration of the midsole of the functional shoe according to the present invention will be given with reference to the attached drawings.
[28] The midsole 20 of the functional shoe according to the present invention is an improvement of the structure of the midsole in the functional shoe disclosed in Korean Patent Registration No.10-533575 and issued to the same inventor as in the present inventor, which is designed in order to greatly reduce a wearer's fatigue caused by walking.
[29] Therefore, the midsole 20 of the functional shoe according to the present invention has the inclined part having a linear shape and gently inclined upwardly in a lengthwise direction from a heel part 23 toward a toe part 21. The ratio of the length MTL of the toe part 21 to the length ML of the midsole 20 is 0.2 to 0.3 : 1. If the length MTL of the toe part 21 is less than 0.2, the wearer's foot arch is placed on both of the toe part 21 and the inclined part 22 of the midsole 20, thereby making the wearer feel uncomfortable during walking, and contrarily, if the length MTL of the toe part 21 is more than 0.3, the wearer's toe part is placed continuously on the toe part 21 and the inclined part 22 of the midsole 20, thereby making the wearer feel uncomfortable during walking.
[30] Further, the ratio of the length MHL of the heel part 23 to the length ML of the midsole 20 is 0.15 to 0.21 : 1. If the length MHL of the heel part 23 is less than 0.15, the wearer's heel part corresponding to the tarsal bone among the bones constituting a foot does not abut against the heel part 23 of the midsole 20, but it abuts against both of the inclined part 22 and the heel part 23 of the midsole 20, thereby making the wearer feel uncomfortable during walking. Contrarily, if the length MHL of the heel part 23 is more than 0.21, the wearer's foot arch is placed on both of the inclined part 22 and the heel part 23 of the midsole 20, thereby making the wearer feel uncomfortable during walking.
[31] The midsole 20 has the inclined part having a substantially gently linear shape and inclined upwardly from the heel part 23 toward the toe part 21, the inclined part having an inclined angle β in a range of 2.5°to 4.0°. Upon walking, the heel part does not slip against the midsole and the toe part is naturally placed thereon, thereby making the wearer feel comfortable during walking. The inclined angle formed on the midsole 20 is good for the wearer's walking and exercising, and therefore, even though he or she walks or exercises for long hours, he or she effectively obtains the increment in a quantity of his or her exercise, without giving any load to his or her Achilles tendon.
[32] If the inclined angle β of the inclined part 22 is less than 2.5°, the relaxing degree of the Achilles tendon is very slight to obtain a relatively small quantity of exercise, which does not satisfy people's demand of effectively increasing their exercise quantity through easy exercise normal times, and contrarily, if the inclined angle β of the inclined part 22 is more than 4.0°, the relaxing degree of the Achilles tendon is very high to obtain a relatively large quantity of exercise, but there occur some problems that the wearer does not feel comfortable during walking, he or she loses his balance and falls down, and much load is applied to his or her Achilles tendon.
[33] The outsole 10 and the midsole 20 used in the present invention are formed of a commercially available material for shoes, preferably, for example, polyurethane PU or an EVA foam. If they are formed of foam having physical properties equivalent to the above-mentioned foam, it does not matter.
[34] Therefore, the functional shoe according to the present invention is configured er- gonomically to have the outsole 10 and the midsole 20 each having the toe part 21 gently more inclined upwardly than the heel part 23, thereby providing stable and balanced landing on the ground to a wearer during his or her walking, providing comfortable walking to the wearer through the natural movement of his or her weight by the formation of the inclined angle of the midsole, developing his or her lower body muscles to allow his or her exercise quantity to be increased, and at the same time improving his or her endurance, driving force, and being quick in action.
[35] While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments but only by the appended claims. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the present invention. Mode for the Invention
[36] According to the present invention, there is provided the functional shoe that is configured to have the outsole and the midsole each having the inclined part inclined upwardly in the lengthwise direction toward the front sole on which the toe part is located from the back sole on which the heel part is located.
[37] At this time, the outsole has the inclined part having a linear shape and inclined upwardly in the lengthwise direction from the back sole to the front sole, and the midsole has the inclined part having a substantially gently linear shape and gently inclined upwardly in the lengthwise direction from the heel part toward the toe part. Industrial Applicability
[38] According to the present invention, there is provided the functional shoe that is configured to have the outsole and the midsole each having the inclined part inclined upwardly in the lengthwise direction toward the front sole on which the toe part is located from the back sole on which the heel part is located, thereby providing stable and balanced landing on the ground to a wearer during his or her walking, providing comfortable walking to the wearer through the natural movement of his or her weight by the formation of the inclined angle of the midsole even though no strength is applied to his or her legs, developing his or her lower body muscles to allow his or her exercise quantity to be increased, and at the same time improving his or her endurance, driving force, and being quick in action.

Claims

Claims
[1] A functional shoe having a shoe sole and an upper, wherein the shoe sole comprises an outsole and a midsole each having an inclined part inclined upwardly in a lengthwise direction toward a front sole on which a toe part is located from a back sole on which a heel part is located.
[2] The functional shoe as defined as claim 1, wherein the inclined part of the outsole is formed at a point on which the ratio of the length OBL of the back sole to the length OFL of the front sole OFL relative to the whole length OL of the outsole is 53 to 56 : 44 to 47.
[3] The functional shoe as defined as claim 2, wherein the inclined part of the outsole has an upwardly inclined angle α in a range of 13°to 17°.
[4] The functional shoe as defined as claim 1, wherein the midsole is constructed such that the ratio of the length MTL of the toe part to the length ML of the midsole is 0.2 to 0.3 : 1 and the ratio of the length MHL of the heel part to the length ML of the midsole is 0.15 to 0.21 : 1.
[5] The functional shoe as defined as claim 4, wherein the midsole has the inclined part having a substantially gently linear shape and inclined upwardly from the heel part toward the toe part, the inclined part having an upwardly inclined angle β in a range of 2.5 °to 4.0°.
PCT/KR2008/002083 2008-04-10 2008-04-14 Functional shoe WO2009125888A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2010539273A JP2011506034A (en) 2008-04-10 2008-04-14 Functional footwear
CN200880128405.6A CN102123620B (en) 2008-04-10 2008-04-14 Functional shoe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20080033151A KR100978290B1 (en) 2008-04-10 2008-04-10 Functonal shoes
KR10-2008-0033151 2008-04-10

Publications (1)

Publication Number Publication Date
WO2009125888A1 true WO2009125888A1 (en) 2009-10-15

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JP (1) JP2011506034A (en)
KR (1) KR100978290B1 (en)
CN (1) CN102123620B (en)
WO (1) WO2009125888A1 (en)

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JP2012170746A (en) * 2011-02-23 2012-09-10 Secaicho Union Corp Sole and footwear
ES2400905A1 (en) * 2011-07-20 2013-04-15 D'torres Calzado Ortopédico, S.L. Sole for footwear and footwear that includes such sole. (Machine-translation by Google Translate, not legally binding)

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KR200419430Y1 (en) * 2006-02-14 2006-06-20 김창호 Attention shoes of arthritis
EP1869989A1 (en) * 2006-06-21 2007-12-26 Jeung Hyun Ryu Shoe sole

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JP4618622B2 (en) * 2000-08-25 2011-01-26 株式会社アサヒコーポレーション Training shoes
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JPS61154503A (en) * 1984-07-27 1986-07-14 月星化成株式会社 Mid-sole
KR20050100984A (en) * 2004-04-16 2005-10-20 곽오련 Shoe
KR200419430Y1 (en) * 2006-02-14 2006-06-20 김창호 Attention shoes of arthritis
EP1869989A1 (en) * 2006-06-21 2007-12-26 Jeung Hyun Ryu Shoe sole

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012170746A (en) * 2011-02-23 2012-09-10 Secaicho Union Corp Sole and footwear
ES2400905A1 (en) * 2011-07-20 2013-04-15 D'torres Calzado Ortopédico, S.L. Sole for footwear and footwear that includes such sole. (Machine-translation by Google Translate, not legally binding)

Also Published As

Publication number Publication date
KR100978290B1 (en) 2010-08-26
CN102123620B (en) 2013-08-21
KR20090107730A (en) 2009-10-14
JP2011506034A (en) 2011-03-03
CN102123620A (en) 2011-07-13

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