JP4434356B2 - Sole structure - Google Patents

Sole structure Download PDF

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Publication number
JP4434356B2
JP4434356B2 JP10091299A JP10091299A JP4434356B2 JP 4434356 B2 JP4434356 B2 JP 4434356B2 JP 10091299 A JP10091299 A JP 10091299A JP 10091299 A JP10091299 A JP 10091299A JP 4434356 B2 JP4434356 B2 JP 4434356B2
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Japan
Prior art keywords
foot
blade
rod
shank
shaped portion
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
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JP10091299A
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Japanese (ja)
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JP2000287709A (en
Inventor
眞理 勝
重基 佐藤
直子 松本
昇 中部
隆浩 柴崎
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Asics Corp
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Asics Corp
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Description

【0001】
【発明の属する技術分野】
本発明は靴底構造の特にシャンクに関するものである。
【0002】
【従来の技術】
ミッドソールを備えた運動靴は、歩行や走行時には踏まず部の変形が激しく、そのため使用者に疲労を与え易い。そこで、近年ではシャンクをミッドソールの下面に固着して、前記変形の防止を図っている靴がある(たとえば、特開平7−079804号公報参照)。
【0003】
かかるシャンクの一例として、ストリップ形状ないしワイヤ状のシャンクをミッドソールの底面側に設けることで、前足部に対し後足部を戻れ易くして、歩行時等に足が若干戻れながら屈曲する“あおり運動”を容易にした靴底構造が知られている。しかし、この構造では、靴底の平面に沿った面内曲げに対する抗力が得られない。
一方、シャンクを硬いロッド状にして面内曲げに対する抗力を大きくすると、該ロッド状のシャンクの前後に固定した板状体が邪魔になって、前記戻れ易さが損なわれる。
【0004】
したがって、本発明の目的は、シャンクを備えた靴底構造であって、前足部に対し後足部が戻れ易く、かつ、靴底平面に沿った面内曲げに対する抗力が大きい靴底構造を提供することである。
【0005】
【課題を解決するための手段】
前記目的を達成するために、本第1発明は、靴底の前足部から後足部にわたってシャンクを設けた靴底構造において、緩衝底における足の内外の略中央部に装着凹所が設けられ、該装着凹所にシャンクが装着され、前記シャンクは、前足部から後足部にわたって前後に長い棒状部と、該棒状部とは別部品で前記棒状部の軸線を中心に所定の角度範囲においてのみ回転可能な状態に前記棒状部に装着され、かつ、踏まず部または踏まず部よりも後方に(足の中足趾節関節よりも後方に)設けられた羽根とを備えていることを特徴とする。
一方、本第2発明は靴底の前足部から後足部にわたってシャンクを設けた靴底構造において、緩衝底における足の内外の略中央部に装着凹所が設けられ、該装着凹所にシャンクが装着され、前記シャンクは、前足部から後足部にわたって前後に長い棒状部と、該棒状部の前端部に固定された固定羽根と、前記棒状部とは別部品で前記棒状部の軸線を中心に所定の2つの平面の間においてのみ回転可能な状態に前記棒状部に装着され、かつ、前記棒状部の後部に取り付けられた後羽根とを備えていることを特徴とする。
本発明によれば、足の“あおり運動”に追従して(後)羽根が棒状部の軸線を中心に回転する。
【0006】
本発明において、「棒状部」は、金属製の丸棒を用いることができるが、パイプなどを加工してもよく、また、シャンクとして剛性が得られれば合成樹脂で形成してもよい。
また、「羽根」は、一般に、棒状部とは別部品で形成するのが好ましいが、棒状部と羽根とを一体の金属や樹脂で形成してもよい。
【0007】
また、本発明のシャンクは、棒状部における固定羽根と後羽根との間に中間羽根を備えているのが好ましいが、本発明では該固定羽根、中間羽根を必ずしも設ける必要はない。
【0008】
また、本発明においては、靴底の前足部と後足部との間に横溝を形成するのが好ましいが、該横溝を必ずしも設ける必要はなく、また、前足部や後足部に靴底を屈曲し易くするための他の横溝を設けてもよい。
【0009】
【発明の実施の形態】
以下、本発明の一実施形態を図面にしたがって説明する。
図1に示すように、緩衝底2には、前足部20から後足部22にわたってシャンク1が設けられている。なお、緩衝底2は、いわゆるミッドソールの下面にアウターソールを接着して形成してもよいが、ミッドソールの下面にアウターソールを一体に成形したもので構成してもよい。
【0010】
図2に示すように、前記緩衝底2における足の内側INおよび外側OUTの略中央部には、装着凹所23が設けてある。該装着凹所23は、前記シャンク1に対応した形状を有しており、該装着凹所23には前記シャンク1が上方から装着される。
【0011】
図3は靴底を底面側から見た斜視図である。
この図に示すように、緩衝底2における前足部20と後足部22との間には、つまり、踏まず部21には、接地面から足裏に向って入り込んだ一対の横溝24,24が形成されている。これにより、緩衝底2は後足部22が前足部20に対し、軸線Cのまわりに戻れ易くなっている。
【0012】
図4において、前記シャンク1は、破線で示す棒状部10と、3枚の羽根1F,1M,1Rとで構成される。前記棒状部10は金属製の丸棒を加工して形成され、一方、前記3枚の羽根1F,1M,1Rは合成樹脂で構成されている。なお、前記棒状部10は、前足部20から後足部22にわたって前後方向に長く形成されており、図4(b)に示すように、その前端部11が偏平な形状に加工されている。
【0013】
図4(a)の固定羽根(羽根状の固定部)1Fは、前記前端部11を鋳ぐるむようにして前端部11に一体に固定されている。一方、中間羽根1Mおよび後羽根1Rは、シャンク1の軸線Cを中心に回転可能に装着されている。なお、中間羽根1Mは棒状部10における固定羽根1Fと後羽根1Rとの間に設けられており、また、後羽根1Rは棒状部10の後端部に取り付けられている。
【0014】
前記各羽根1F,1M,1Rには、中間羽根1Mおよび後羽根1Rの回転方向や回転角を規制すると共に両回転羽根1M,1Rを互いに連動させるための係合部12が一体に形成されている。これらの係合部12は、図4(a),(c)のように互いに回転方向に係合することで、以下に説明するように中間羽根1Mの回転方向を規制する。
【0015】
前記シャンク1の各羽根1F,1M,1Rは、靴の非装着時には、図1に示すように、緩衝底2の上面に沿った第1平面P1上に配設されたようになって、互いに略フラットな状態に保たれる。中間羽根1Mは、前記フラットな図5(a)の状態から、図5(b)の矢印A1のように、第1平面P1を足の内側に向けて回転させた第2平面P2との間の角度範囲においてのみ回転可能となっている。一方、前記後羽根1Rは、前記フラットな図5(a)の状態から、図5(c)の矢印A2のように、第1平面P1を足の外側に向けて回転させた第3平面P3と、前記第2平面P2との間において回転できる。つまり、フラットな図5(a)の状態に対し、中間羽根1Mは内側A1にのみ回転でき、一方、後羽根1Rは内側A1および外側A2の双方に回転することができる。
【0016】
図3に示すように、各羽根1F,1M,1Rには円柱部13が一体に形成されており、一方、緩衝底2の装着凹所23には靴底の底面に向って開いた円形孔部25が3つ形成されている。前記円柱部13は円形孔部25に嵌まり込んだ状態で固着される。また、前記各羽根1F,1M,1Rの裏面は図2の装着凹所23に固着されると共に、その表面が中底に固着される。なお、中底は緩衝底2の上方に固着される。
【0017】
つぎに、図6を用いて、歩行時等の足の“あおり運動”等について説明する。
足3は、図6(a)に示すように、踵の外側30から着地し、図6(b)のように足裏35全体が着地し始める。その後、足3は図6(c)の矢印A1のように、後足部32が内側に回転するかのように荷重中心が内側に移動する。その後、中足趾節関節の屈曲により踵が浮き始めるが、その際、まず、第3〜第5中足趾節関節が最初に屈曲するため足の後足部32が矢印A2のように外側に回転して、足の外側の小趾球33に荷重中心が移動する。その後、第1〜第2中足趾節関節も屈曲し足が図6(e)のように屈曲すると、矢印A1のように足の後足部32が内側に若干回転して、足の内側の母趾球34に荷重中心が移動し、該母趾球34を荷重中心として前足部を蹴り出すことで、図6(f)のように足が宙に浮く。
【0018】
つぎに、本実施形態の靴底構造を有する靴を装着して歩行した場合の各羽根の挙動について説明する。
図7(a)から(b)にかけて踵の外側から着地し、踏み込んで足裏全体が着地していく際に、足の踵が内側INに回転するが、これに合わせて図5(b)のように2枚の回転羽根1M、1Rが内側A1に若干回転する。続いて、図7(b)から(c)のように足裏全体が接地すると、前記2枚の回転羽根1M,1Rが元に戻り、後羽根1Rの剛性により、足の踵が内側INに回転するプロネーションを防止する。
続いて、図7(d)の蹴り出し初期には、踵が浮き始めるのであるが、この際には、まず第3〜第5中足趾節関節が屈曲し、小趾球(足の前部の外側)に荷重中心が移動し始める。この際、足の動きに対応して靴底の後足部22が外側に回転しようとすると、図5(c)のように後羽根1Rが外側に回転して、前記後足部22の回転を許容する。更に、第1から第2中足趾節関節も屈曲して図7(e)のように踏まず部21が浮き始めると、小趾球から母趾球に体重が移動するのに伴って、図5(b)の2枚の回転羽根1M,1Rが内側に若干回転して、足の“あおり動作”が妨げられるのを防止すると共に、中間羽根1Mが外側に回転しないので、前足部ないし中足部が足の外側に捩れるのを防止して、母趾球に加わるべき力が足の外側に逃げるのを防止する。その後、足が宙に浮くと2枚の羽根M,Rが元の原点位置(角度)に復帰する。
【0019】
【発明の効果】
以上説明したように、本発明によれば、(後)羽根により歩行時に足の前足部と後足部とが相対的に捩じれる“あおり運動”を許容する一方で、踏まず部が屈曲するのをシャンクの棒状部により防止するから足が疲労しにくい。
特に、シャンクの曲げ剛性の大きい棒状部や、羽根により、靴底の平面に沿った面内曲げに対する大きな抗力が得られるので、該面内曲げによる不必要な靴底や足の変形を防止できるから歩き易くなる。
【0020】
また、内側に向って回転可能な中間羽根を設ければ、踏まず部の面内曲げの防止効果が大きくなるだけでなく、足裏全体が着地していく際や、足裏が浮き始める際に足の後足部が内側へ回転するのを許容し得る。特に、足を踏み出す際に、踏み出す力が小趾球側に(外側に)逃げるのを防止して、母趾球を荷重中心として前足部を蹴り出すことができるから、足の疲労等を防止し得る。
【図面の簡単な説明】
【図1】本発明の靴底構造の一実施形態を示す靴底の斜視図である。
【図2】同分解斜視図である。
【図3】底面側から見た靴底の分解斜視図である。
【図4】シャンクの平面図、縦断面図、横断面図である。
【図5】シャンクの動作を示す斜視図である。
【図6】歩行中の素足の挙動を示す背面図、ならびに、足を示す底面図である。
【図7】靴を装着した際の足の挙動を示す背面図である。
【符号の説明】
1:シャンク
10:棒状部
1F:固定羽根
1M:中間羽根
1R:後羽根
2:緩衝底
20:前足部
21:踏まず部
22:後足部
23:装着凹所
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sole structure, in particular a shank.
[0002]
[Prior art]
An athletic shoe provided with a midsole is not easily stepped on during walking or running, and therefore tends to cause fatigue to the user. Therefore, in recent years, there is a shoe in which a shank is fixed to the lower surface of the midsole to prevent the deformation (for example, see Japanese Patent Application Laid-Open No. 7-079804).
[0003]
As an example of such a shank, a strip-shaped or wire-shaped shank is provided on the bottom side of the midsole, so that the rear foot can be easily returned to the front foot, and the foot can be bent while slightly returning during walking. Sole structures that facilitate "movement" are known. However, this structure cannot provide a resistance against in-plane bending along the plane of the sole.
On the other hand, when the shank is made into a hard rod shape and the resistance against in-plane bending is increased, the plate-like bodies fixed before and after the rod-shaped shank become in the way, and the ease of return is impaired.
[0004]
Accordingly, an object of the present invention is to provide a shoe sole structure having a shank, in which the rear foot portion can easily return to the front foot portion and has a large resistance against in-plane bending along the shoe sole plane. It is to be.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, in the shoe sole structure in which a shank is provided from the front foot portion to the rear foot portion of the shoe sole, a mounting recess is provided at a substantially central portion inside and outside the foot of the buffer bottom. A shank is mounted in the mounting recess, and the shank is long in the front and rear direction from the front foot portion to the rear foot portion, and is a separate part from the rod-shaped portion, and in a predetermined angle range around the axis of the rod-shaped portion. And a blade that is attached to the rod-like portion so as to be rotatable only , and is provided behind the stepped portion or the stepped portion (behind the midfoot toe joint of the foot). Features.
On the other hand, according to the second aspect of the present invention, in the shoe sole structure in which the shank is provided from the front foot portion to the rear foot portion of the shoe sole, a mounting recess is provided in a substantially central portion inside and outside the foot of the buffer sole, and the shank is provided in the mounting recess. The shank has a rod-shaped portion that is long in the front-rear direction from the front foot portion to the rear foot portion, a fixed blade fixed to the front end portion of the rod-shaped portion, and an axis of the rod-shaped portion that is separate from the rod-shaped portion. And a rear blade attached to the rear portion of the rod- shaped portion and mounted on the rod-shaped portion so as to be rotatable only between two predetermined planes at the center .
According to the present invention, the (rear) vane rotates around the axis of the rod-like part following the “tilting motion” of the foot.
[0006]
In the present invention, a metal rod can be used as the “rod-like portion”, but a pipe or the like may be processed, and may be formed of a synthetic resin as long as rigidity is obtained as a shank.
In general, the “blade” is preferably formed as a separate part from the rod-shaped portion, but the rod-shaped portion and the blade may be formed of an integral metal or resin.
[0007]
Further, the shank of the present invention preferably includes an intermediate blade between the fixed blade and the rear blade in the rod-shaped portion, but in the present invention, the fixed blade and the intermediate blade are not necessarily provided.
[0008]
In the present invention, it is preferable to form a lateral groove between the front foot part and the rear foot part of the shoe sole, but it is not always necessary to provide the lateral groove, and the shoe sole is provided on the front foot part or the rear foot part. Other transverse grooves for facilitating bending may be provided.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the shank 1 is provided on the buffer bottom 2 from the front foot portion 20 to the rear foot portion 22. The buffer bottom 2 may be formed by bonding the outer sole to the lower surface of the so-called midsole, but may be configured by integrally molding the outer sole on the lower surface of the midsole.
[0010]
As shown in FIG. 2, a mounting recess 23 is provided at a substantially central portion of the inner side IN and the outer side OUT of the foot in the buffer bottom 2. The mounting recess 23 has a shape corresponding to the shank 1, and the shank 1 is mounted in the mounting recess 23 from above.
[0011]
FIG. 3 is a perspective view of the shoe sole as seen from the bottom side.
As shown in this figure, a pair of lateral grooves 24, 24 that enter between the front foot portion 20 and the rear foot portion 22 in the buffer bottom 2, that is, the stepping portion 21, from the ground contact surface toward the sole. Is formed. Thereby, the buffer bottom 2 is such that the rear foot portion 22 can easily return around the axis C with respect to the front foot portion 20.
[0012]
In FIG. 4, the shank 1 is composed of a rod-like portion 10 indicated by a broken line and three blades 1F, 1M, 1R. The rod-shaped part 10 is formed by processing a metal round bar, while the three blades 1F, 1M, 1R are made of synthetic resin. In addition, the said rod-shaped part 10 is long formed in the front-back direction from the front foot part 20 to the rear foot part 22, and as shown in FIG.4 (b), the front-end part 11 is processed into the flat shape.
[0013]
The fixed blade (blade-shaped fixed portion) 1F in FIG. 4A is integrally fixed to the front end portion 11 so as to cast the front end portion 11. On the other hand, the intermediate blade 1M and the rear blade 1R are mounted so as to be rotatable about the axis C of the shank 1. The intermediate blade 1M is provided between the fixed blade 1F and the rear blade 1R in the rod-shaped portion 10, and the rear blade 1R is attached to the rear end portion of the rod-shaped portion 10.
[0014]
Each of the blades 1F, 1M, 1R is integrally formed with an engaging portion 12 for restricting the rotation direction and the rotation angle of the intermediate blade 1M and the rear blade 1R and interlocking the rotary blades 1M, 1R with each other. Yes. These engaging portions 12 are engaged with each other in the rotational direction as shown in FIGS. 4A and 4C, thereby restricting the rotational direction of the intermediate blade 1 </ b> M as described below.
[0015]
Each of the blades 1F, 1M, 1R of the shank 1 is arranged on a first plane P1 along the upper surface of the buffer bottom 2, as shown in FIG. It is kept in a substantially flat state. The intermediate blade 1M is located between the flat state shown in FIG. 5A and the second plane P2 rotated from the first plane P1 toward the inside of the foot as indicated by an arrow A1 in FIG. 5B. The rotation is possible only in the angular range. On the other hand, the rear blade 1R has a third plane P3 obtained by rotating the first plane P1 toward the outside of the foot as indicated by an arrow A2 in FIG. 5C from the flat state of FIG. And the second plane P2. That is, with respect to the flat state of FIG. 5A, the intermediate blade 1M can rotate only to the inner side A1, while the rear blade 1R can rotate to both the inner side A1 and the outer side A2.
[0016]
As shown in FIG. 3, each blade 1 </ b> F, 1 </ b> M, 1 </ b> R is integrally formed with a cylindrical portion 13, while the mounting recess 23 of the buffer bottom 2 has a circular hole that opens toward the bottom of the shoe sole. Three portions 25 are formed. The cylindrical portion 13 is fixed in a state of being fitted into the circular hole portion 25. Further, the back surface of each of the blades 1F, 1M, 1R is fixed to the mounting recess 23 of FIG. 2, and its surface is fixed to the insole. The insole is fixed above the buffer bottom 2.
[0017]
Next, with reference to FIG. 6, the “tilting exercise” of the foot during walking and the like will be described.
As shown in FIG. 6A, the foot 3 lands from the outer side 30 of the heel, and the entire sole 35 starts to land as shown in FIG. 6B. Thereafter, the load center of the foot 3 moves inward as if the rear foot 32 rotates inward as indicated by an arrow A1 in FIG. Thereafter, the heel begins to float due to the bending of the middle foot phalanx joint. At this time, first, the third to fifth middle foot phalanx joints are bent first, so that the rear foot 32 of the foot is outward as indicated by the arrow A2. And the load center moves to the small ball 33 outside the foot. Thereafter, when the first and second metatarsophalangeal joints are also bent and the foot is bent as shown in FIG. 6 (e), the rear foot portion 32 of the foot is slightly rotated inward as indicated by an arrow A1, and the inner side of the foot. The center of the load moves to the main ball 34 and kicks the forefoot with the main ball 34 as the load center, so that the foot floats in the air as shown in FIG.
[0018]
Next, the behavior of each blade when walking with the shoe having the sole structure of the present embodiment mounted will be described.
When landing from the outside of the heel from FIGS. 7 (a) to 7 (b) and stepping on the entire sole, the heel of the foot rotates to the inside IN. In accordance with this, FIG. 5 (b) Thus, the two rotary blades 1M and 1R are slightly rotated inward A1. Subsequently, when the entire sole is grounded as shown in FIGS. 7B to 7C, the two rotary blades 1M and 1R return to their original positions, and the stiffness of the rear blade 1R causes the foot heel to be on the inner side IN. Prevent rotating pronation.
Subsequently, at the initial stage of kicking in FIG. 7 (d), the heel begins to float. At this time, the third to fifth metatarsal joints are bent first, and the small ball (in front of the foot) is bent. The load center begins to move to the outside of the part. At this time, if the rear foot portion 22 of the shoe sole rotates outward in response to the movement of the foot, the rear blade 1R rotates outward as shown in FIG. Is acceptable. Furthermore, when the first to second metatarsal joints are also bent and the part 21 starts to float as shown in FIG. 7 (e), as the weight moves from the small ball to the mother ball, Since the two rotary blades 1M and 1R in FIG. 5B are slightly rotated inward to prevent the “tilting operation” of the foot from being hindered, and the intermediate blade 1M does not rotate outward, the front foot portion or The middle foot portion is prevented from being twisted to the outside of the foot, and the force to be applied to the mother ball is prevented from escaping to the outside of the foot. Thereafter, when the foot floats in the air, the two blades M and R return to the original origin position (angle).
[0019]
【The invention's effect】
As described above, according to the present invention, the (back) blade allows the “tilting motion” in which the front foot portion and the rear foot portion of the foot are relatively twisted during walking, while the step portion is bent. This prevents the foot from getting tired because it is prevented by the rod-shaped part of the shank.
In particular, since the rod-like portion having high bending rigidity of the shank and the blades can obtain a large resistance against in-plane bending along the plane of the shoe sole, unnecessary deformation of the shoe sole and foot due to the in-plane bending can be prevented. It becomes easy to walk from.
[0020]
In addition, if an intermediate blade that can rotate inward is provided, the effect of preventing in-plane bending of the stepped portion will not only be increased, but also when the entire sole is landing or when the sole begins to float The rear leg of the foot can be allowed to rotate inward. In particular, when stepping on the foot, it is possible to prevent the stepping force from escaping to the side of the small ball (outside) and kicking the forefoot part around the main ball as the load center, thus preventing foot fatigue, etc. Can do.
[Brief description of the drawings]
FIG. 1 is a perspective view of a shoe sole showing an embodiment of a shoe sole structure of the present invention.
FIG. 2 is an exploded perspective view of the same.
FIG. 3 is an exploded perspective view of a shoe sole viewed from the bottom side.
FIG. 4 is a plan view, a longitudinal sectional view, and a transverse sectional view of a shank.
FIG. 5 is a perspective view showing the operation of the shank.
FIG. 6 is a rear view showing the behavior of a bare foot while walking and a bottom view showing the foot.
FIG. 7 is a rear view showing the behavior of the foot when wearing shoes.
[Explanation of symbols]
1: Shank 10: Rod-shaped portion 1F: Fixed blade 1M: Intermediate blade 1R: Rear blade 2: Buffer bottom 20: Forefoot portion 21: Unstepped portion 22: Rear foot portion 23: Mounting recess

Claims (1)

靴底の前足部から後足部にわたってシャンクを設けた靴底構造において、
緩衝底における足の内外の略中央部に装着凹所が設けられ、該装着凹所にシャンクが装着され、
前記シャンクは、前足部から後足部にわたって前後に長い棒状部と、該棒状部の前端部に固定された固定羽根と、前記棒状部の軸線を中心に回転可能で、かつ、前記棒状部の後部に取り付けられた後羽根と、前記棒状部における前記固定羽根と後羽根との間に配置された中間羽根とを備え、
該中間羽根は前記固定羽根の配設された略水平な第1平面と、
該第1平面を足の内側に向けて回転させた第2平面との間のみが回転可能になっている靴底構造。
In the sole structure in which a shank is provided from the front foot portion to the rear foot portion of the shoe sole,
A mounting recess is provided in a substantially central part inside and outside of the foot at the buffer bottom, and a shank is mounted in the mounting recess.
The shank is rotatable about the axis of the rod- shaped portion, a rod-shaped portion elongated in the front-rear direction from the front foot portion to the rear foot portion, a fixed blade fixed to the front end portion of the rod-shaped portion, and the axis of the rod-shaped portion. A rear blade attached to the rear portion, and an intermediate blade disposed between the fixed blade and the rear blade in the rod-shaped portion,
The intermediate blade includes a substantially horizontal first plane on which the fixed blade is disposed;
A shoe sole structure that is rotatable only between a second plane obtained by rotating the first plane toward the inside of the foot.
JP10091299A 1999-04-08 1999-04-08 Sole structure Expired - Fee Related JP4434356B2 (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Publication number Priority date Publication date Assignee Title
JP4886774B2 (en) * 2006-04-21 2012-02-29 株式会社アシックス Sole with reinforced structure and sole with shock absorbing structure
KR100882189B1 (en) 2007-12-05 2009-03-13 (주)알와이엔코리아 A masai walking shoes
KR100955028B1 (en) * 2008-01-08 2010-05-04 조재훈 A midsole for Masai Walking health footwear having a barefoot technology
KR100981363B1 (en) * 2008-03-07 2010-09-10 이호형 A midsole for Masai Walking health footwear having a barefoot technology
KR101638396B1 (en) * 2016-04-21 2016-07-13 주식회사 지지코리아 Length universal shoe sole and manufacturing method thereof
JP7397855B2 (en) * 2019-03-29 2023-12-13 株式会社アシックス Sole torsion control system

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