JP2000197503A - Cushioning structure of shoe sole - Google Patents

Cushioning structure of shoe sole

Info

Publication number
JP2000197503A
JP2000197503A JP11314775A JP31477599A JP2000197503A JP 2000197503 A JP2000197503 A JP 2000197503A JP 11314775 A JP11314775 A JP 11314775A JP 31477599 A JP31477599 A JP 31477599A JP 2000197503 A JP2000197503 A JP 2000197503A
Authority
JP
Japan
Prior art keywords
shear deformation
shoe sole
deformation element
cushioning
shear
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.)
Granted
Application number
JP11314775A
Other languages
Japanese (ja)
Other versions
JP3517168B2 (en
Inventor
Mitsuo Nasako
光男 奈迫
Takashi Nishiwaki
剛史 西脇
Shigeyuki Mitsui
滋之 三ツ井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asics Corp
Original Assignee
Asics Corp
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 Asics Corp filed Critical Asics Corp
Priority to JP31477599A priority Critical patent/JP3517168B2/en
Publication of JP2000197503A publication Critical patent/JP2000197503A/en
Application granted granted Critical
Publication of JP3517168B2 publication Critical patent/JP3517168B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • A43B13/18—Resilient soles
    • A43B13/181—Resiliency achieved by the structure of the sole
    • A43B13/185—Elasticated plates sandwiched between two interlocking components, e.g. thrustors
    • 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
    • A43B13/18—Resilient soles
    • A43B13/181—Resiliency achieved by the structure of the sole
    • 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
    • A43B13/18—Resilient soles
    • A43B13/187—Resiliency achieved by the features of the material, e.g. foam, non liquid materials
    • 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
    • A43B13/18—Resilient soles
    • A43B13/189—Resilient soles filled with a non-compressible fluid, e.g. gel, water

Abstract

PROBLEM TO BE SOLVED: To improve easily and reliably the cushioning property by devising a structure of a shoe sole by supporting a shear deformation element in an upper position displaced forward with respect to the tread and shear-deforming it independently so that it may fall forward due to load from above. SOLUTION: A shear deformation element 11 is supported by a support member 3 in an upper position displaced forward F with respect to the tread 20 of a shoe sole 1 in a cushioning portion 10 provided at the shoe sole 1, and is shear-deformed independently so that it may fall forward F by load from above. The shear deformation element 11 is provided with a front end 11a and a rear end 11b which are tilted forward F as they go upward. Therefore, the shear deformation element 11 is compressively deformed and shear-deformed in a state of falling forward F due to load W from above when it touches the ground during walk. At this time, generally speaking as absorption energy of shear deformation is greater than compression deformation, even small deformation can absorb sufficiently great energy.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は靴底の特に緩衝構造
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe sole, and more particularly to a buffer structure.

【０００２】[0002]

【従来の技術】従来より靴底には緩衝性能が要求され
る。2. Description of the Related Art Conventionally, shoe soles have been required to have cushioning performance.

【０００３】[0003]

【発明が解決しようとする課題】しかし、従来の靴底
は、一般に、歩行時の衝撃をミッドソールなどのような
緩衝部の圧縮変形によりエネルギーを損失させて吸収し
ている。しかし、こうした圧縮変形によるエネルギーの
吸収（損失）ではその吸収量が一般に小さいので、十分
な緩衝性が得られていない。一方、エネルギーの損失を
大きくさせるために、ミッドソールを厚くすると、靴底
の軽量性が損なわれる。However, conventional shoe soles generally absorb the impact of walking by losing energy due to compressive deformation of a buffer such as a midsole. However, in the absorption (loss) of energy due to such compressive deformation, the amount of absorption is generally small, so that sufficient cushioning property has not been obtained. On the other hand, if the midsole is thickened to increase energy loss, the lightness of the shoe sole is impaired.

【０００４】したがって、本発明の目的は、靴底の構造
自体を新たに工夫することで緩衝性を向上させることで
ある。Accordingly, an object of the present invention is to improve the cushioning property by newly devising the structure of the sole itself.

【０００５】[0005]

【発明の構成】本発明の構成を図６にしたがって説明す
る。靴底１には緩衝部１０が設けられている。前記緩衝
部１０には、靴底１の接地面２０に対して前方Ｆに位置
ズレした上方の位置において支持部材３に支持されてい
ることで、上方の荷重Ｗにより前方Ｆに倒れるように独
立して剪断変形を呈する剪断変形要素１１が設けられて
いる。The structure of the present invention will be described with reference to FIG. A buffer 10 is provided on the sole 1. The buffer portion 10 is supported by the support member 3 at an upper position displaced forward F with respect to the ground surface 20 of the sole 1, so that the buffer portion 10 is independently moved forward F by an upper load W. And a shear deformation element 11 that exhibits shear deformation.

【０００６】前記剪断変形要素１１は、前端面１１ａと
後端面１１ｂとを有している。前記剪断変形要素１１
は、前記前端面１１ａおよび後端面１１ｂが、各々、上
方に行くに従い前方Ｆに傾斜している。これにより前記
剪断変形要素１１の縦断面形状が、たとえば、おおむね
平行四辺形状に形成されている。このように前記両端面
１１ａ，１１ｂが傾斜していることにより、前記剪断変
形要素１１は、歩行走行における着地時の荷重Ｗによ
り、図６（ａ）の２点鎖線で示すように、圧縮変形する
と同時に前方Ｆに倒れるように剪断変形を呈する。な
お、前記両端面１１ａ，１１ｂの好ましい傾斜角度θ
は、３０°〜６０°程度に設定する。より好ましくは、
４０°〜５０°程度に設定する。[0006] The shear deformation element 11 has a front end face 11a and a rear end face 11b. The shear deformation element 11
The front end face 11a and the rear end face 11b are each inclined forward F as going upward. Thereby, the longitudinal sectional shape of the shear deformation element 11 is formed, for example, in a substantially parallelogram shape. As described above, since the both end surfaces 11a and 11b are inclined, the shear deformation element 11 is compressed and deformed by the load W at the time of landing while walking as shown by a two-dot chain line in FIG. At the same time, a shear deformation is caused to fall forward F. In addition, the preferable inclination angle θ of the end faces 11a and 11b
Is set to about 30 ° to 60 °. More preferably,
It is set to about 40 ° to 50 °.

【０００７】本発明において、「緩衝部」とは、靴底の
うちの外底部（接地底部）や、足からの荷重を受ける中
底を除く部分をいう。また、支持部材３は、一般に、中
底やカップインソールにより形成される。「剪断変形を
呈するように」とは、垂直荷重Ｗを受けたときに、前方
Ｆへの倒れが大きくなって、剪断変形を呈することを意
味する。また、「独立して」とは、緩衝部１０の他の部
分１２とは変形の連続性が小さいか殆どないこと、ある
いは、剪断変形要素１１が他の部分１２よりもはるかに
大きな剪断変形を呈することを意味する。[0007] In the present invention, the term "buffer" refers to a portion of the shoe sole other than the outer sole (ground contact bottom) and the inner sole that receives a load from the foot. In addition, the support member 3 is generally formed of an insole or a cup insole. “To exhibit shear deformation” means that, when a vertical load W is applied, the frontward F becomes large and shear deformation is exhibited. Further, “independently” means that the continuity of deformation is small or little with respect to the other portion 12 of the cushioning portion 10, or the shearing deformation element 11 causes a much larger shear deformation than the other portion 12. Means to present.

【０００８】本発明によれば、上方からの荷重Ｗが加わ
ると、前記剪断変形要素１１は二点鎖線で示すように前
方に倒れるようにして変形する。つまり剪断変形する。
ここで、一般に剪断変形による吸収エネルギーは、圧縮
変形よりもはるかに大きいので、小さな変形でも十分に
大きなエネルギーを吸収することができる。According to the present invention, when a load W is applied from above, the shear deformation element 11 is deformed so as to fall forward as indicated by a two-dot chain line. That is, it is sheared.
Here, in general, the energy absorbed by the shear deformation is much larger than that of the compression deformation, so that even a small deformation can absorb a sufficiently large energy.

【０００９】本発明において、剪断変形要素１１は、図
６（ａ）のように前記緩衝部１０の他の部分１２から独
立して成形されていてもよいが、図６（ｂ）のように薄
肉連結部１３を介して一体に成形されていてもよい。ま
た、剪断変形要素１１は、図６（ａ）のように、１つだ
け設けてもよいが、図６（ｂ），図６（ｃ）のように、
２以上設けてもよい。前記剪断変形要素１１を２以上設
ける場合において、前記剪断変形要素１１の間に他の緩
衝要素１４を設けてもよい。In the present invention, the shear deformation element 11 may be formed independently of the other portion 12 of the buffer section 10 as shown in FIG. 6 (a), but as shown in FIG. 6 (b). It may be integrally formed via the thin connecting portion 13. Although only one shear deformation element 11 may be provided as shown in FIG. 6 (a), as shown in FIGS. 6 (b) and 6 (c),
Two or more may be provided. When two or more shear deformation elements 11 are provided, another buffer element 14 may be provided between the shear deformation elements 11.

【００１０】[0010]

【発明の実施の形態】以下、本発明の一実施形態を図１
〜図５にしたがって説明する。図２に示すように、靴Ｓ
は靴底１と該靴底１の上方に設けられた甲被Ｕを備えて
いる。図１（ｂ）に示すように、靴底１は接地底（アウ
ターソール）２と緩衝部１０と支持部材３とが互いに一
体に接合されて形成されている。図２の支持部材３は甲
被Ｕに接合されると共に足からの荷重Ｗを受けるもの
で、図３のように、後端部および両側部に巻上部３０を
有している。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIG. As shown in FIG.
Has a sole 1 and an upper U provided above the sole 1. As shown in FIG. 1B, the shoe sole 1 is formed by integrally joining a ground sole (outer sole) 2, a buffer 10, and a support member 3 to each other. The support member 3 shown in FIG. 2 is joined to the instep U and receives a load W from the foot, and has a winding portion 30 at the rear end and on both sides as shown in FIG.

【００１１】前記緩衝部（ミッドソール）１０は、たと
えばＥＶＡのような樹脂からなる発泡体１０ａと軟質緩
衝部材１０ｂとで構成されている。該発泡体１０ａの上
面および内側面１５は、前記支持部材３の底面ないし巻
上部３０に接着剤で固着されている。図１（ａ）に示す
前記発泡体１０ａの下面には図１（ｂ）に示す接地底２
が固着されている。図３の前記発泡体１０ａは、剪断変
形要素１１と該剪断変形要素１１とは別の他の部分であ
る圧縮変形要素１２とを備えている。圧縮変形要素１２
は通常の靴と同様に、圧縮変形を呈することで、衝撃を
吸収する。The cushioning portion (midsole) 10 is composed of a foam 10a made of a resin such as EVA and a soft cushioning member 10b. The upper surface and the inner side surface 15 of the foam 10a are fixed to the bottom surface or the winding portion 30 of the support member 3 with an adhesive. On the lower surface of the foam 10a shown in FIG. 1A, a grounding bottom 2 shown in FIG.
Is fixed. The foam 10a of FIG. 3 includes a shear deformation element 11 and a compression deformation element 12 which is another part different from the shear deformation element 11. Compression deformation element 12
, As in ordinary shoes, absorbs shock by exhibiting compressive deformation.

【００１２】図３において、前記剪断変形要素１１はた
とえば２つ設けられており、その軸線Ｃは上方に行くに
したがい斜め前方Ｆに傾斜している。すなわち、剪断変
形要素１１は接地面２０（図２）に対し前方Ｆに位置ず
れした上方の位置において支持部材３に支持されている
ことで、上方からの荷重Ｗを受けると前方Ｆに倒れるよ
うに当該部分が他の部分から独立して剪断変形を呈す
る。これにより、走行時や歩行時の衝撃を緩衝する。な
お、本明細書において、「軸線Ｃ」とは、剪断変形要素
１１の平面断面（水平面に平行な断面）の図心を連ねた
軸線をいう。In FIG. 3, for example, two shear deformation elements 11 are provided, and the axis C thereof is inclined obliquely forward F as going upward. That is, since the shear deformation element 11 is supported by the support member 3 at an upper position displaced forward F with respect to the ground contact surface 20 (FIG. 2), the shear deformation element 11 falls forward F when receiving a load W from above. At this point, the portion exhibits shear deformation independently of the other portions. As a result, the shock during running or walking is buffered. In this specification, the “axis C” refers to an axis connecting the centroids of a plane cross section (a cross section parallel to a horizontal plane) of the shear deformation element 11.

【００１３】ここで、剪断変形要素１１が十分に剪断変
形を呈するためには、剪断変形要素１１が所定の大きさ
の平面断面を有する必要がある。すなわち、剪断変形要
素１１は曲げ変形を差程起こすことなく剪断変形をする
必要がある。したがって、細い棒状や板状の要素をトラ
スやハニカム状に形成したものは、本発明の範囲に含ま
れない。なお、本実施形態では剪断変形要素１１は、図
４および図５に示す薄肉連結部１３を介して圧縮変形要
素１２や隣の剪断変形要素１１に一体に形成されてい
る。Here, in order for the shear deformation element 11 to exhibit sufficient shear deformation, it is necessary that the shear deformation element 11 has a plane cross section of a predetermined size. That is, it is necessary for the shear deformation element 11 to perform shear deformation without causing bending deformation. Therefore, a truss or a honeycomb formed from a thin rod-shaped or plate-shaped element is not included in the scope of the present invention. In this embodiment, the shear deformation element 11 is formed integrally with the compression deformation element 12 and the adjacent shear deformation element 11 via the thin connecting portion 13 shown in FIGS.

【００１４】図３の前記剪断変形要素１１は緩衝部１０
における後足部の外側に設けるのが好ましい。走行およ
び歩行時には、一般に後足部の外側から着地するので、
この着地時の衝撃を緩和するためである。The shear deformation element 11 shown in FIG.
It is preferable to provide it on the outside of the rear foot part in the above. When running and walking, it generally lands from the outside of the hind foot,
This is for reducing the impact at the time of landing.

【００１５】前記複数の剪断変形要素１１の間には、該
剪断変形要素１１よりもヤング率の小さい他の緩衝要素
１４が設けられている。これらの緩衝要素１４は前記剪
断変形要素１１が互いに拘束されることなく剪断変形す
るのを許容する。Another cushioning element 14 having a smaller Young's modulus than the shearing element 11 is provided between the plurality of shearing elements 11. These cushioning elements 14 allow the shearing elements 11 to shear without being constrained to each other.

【００１６】図５において、前記緩衝要素１４は、たと
えば樹脂製の密封容器１４ａの中に、いわゆるゲル１４
ｂが充填されてなる。これらの緩衝要素１４は、上方の
支持部材３からの衝撃を吸収するもので、図４のように
発泡体１０ａの凹所１７に配置されると共に、前記剪断
変形要素１１の前後に配置される。In FIG. 5, the buffering element 14 is a so-called gel 14 in a sealed container 14a made of, for example, resin.
b is filled. These cushioning elements 14 absorb the impact from the upper supporting member 3 and are arranged in the recesses 17 of the foam 10a as shown in FIG. .

【００１７】前記実施形態では、剪断変形要素１１を発
泡体１０ａに一体に成形したが、かならずしも一体に成
形する必要はなく、別体に成形してもよい。ただ、別体
に成形すると部品点数が多くなるので、一体に成形する
のが好ましい。また、本発明では、必ずしも他の緩衝要
素１４を設ける必要はない。In the above-described embodiment, the shear deformation element 11 is formed integrally with the foam 10a. However, it is not always necessary to form the shear deformation element 11 integrally, and it may be formed separately. However, since the number of parts increases when molded separately, it is preferable to mold them integrally. In the present invention, it is not always necessary to provide another cushioning element 14.

【００１８】[0018]

【発明の効果】以上説明したように、本発明によれば、
上方からの荷重を受けたときに剪断変形により衝撃緩衝
を行うので、コンパクトな構造で大きな緩衝性を発揮す
ることができる。As described above, according to the present invention,
Since the shock buffering is performed by shearing deformation when receiving a load from above, a large cushioning property can be exhibited with a compact structure.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の一実施形態にかかり、（ａ）はアウタ
ーソールが固着されていない状態を示すミッドソールの
平面図、（ｂ）は靴底の側面図である。FIG. 1A is a plan view of a midsole showing a state where an outer sole is not fixed, and FIG. 1B is a side view of a shoe sole according to an embodiment of the present invention.

【図２】靴を斜め後方から見た斜視図である。FIG. 2 is a perspective view of the shoe as viewed obliquely from behind.

【図３】緩衝部と支持部材とを分解して示す斜視図であ
る。FIG. 3 is an exploded perspective view showing a buffer portion and a support member.

【図４】緩衝部の発泡体と軟質緩衝部材を分解して示す
斜視図である。FIG. 4 is an exploded perspective view showing a foam body and a soft cushioning member of the cushioning unit.

【図５】図１（ａ）のＶ−Ｖ線断面図である。FIG. 5 is a sectional view taken along line VV of FIG.

【図６】本発明の原理を示す断面図である。FIG. 6 is a sectional view showing the principle of the present invention.

【符号の説明】[Explanation of symbols]

１：靴底 １０：緩衝部（ミッドソール） １１：剪断変形要素 １３：薄肉連結部 ２：アウターソール ２０：接地面 ３：支持部材 Ｃ：軸線 Ｆ：前方 Ｗ：荷重 1: Shoe sole 10: Buffer part (midsole) 11: Shear deformation element 13: Thin connecting part 2: Outer sole 20: Tread surface 3: Support member C: Axis F: Front W: Load

Claims (10)

【特許請求の範囲】[Claims] 【請求項１】 靴底に緩衝部を設けた靴底の緩衝構造で
あって、 接地面に対して前方に位置ズレした上方の位置において
支持されていることで、上方からの荷重により前方に倒
れるように独立して剪断変形を呈する剪断変形要素を前
記緩衝部に備えた靴底の緩衝構造。The present invention relates to a shoe sole cushioning structure in which a cushioning portion is provided on a shoe sole, and is supported at an upper position displaced forward with respect to a ground contact surface, so that the shoe is moved forward by a load from above. A cushioning structure for a shoe sole, wherein the cushioning portion includes a shearing deformation element which independently exhibits shearing deformation so as to fall down. 【請求項２】 足の甲を包むのに適したアッパーと踏み
面を外表面に有するアウターソールとの間に、ミッドソ
ールを介挿した靴底の緩衝構造であって、 前記ミッドソールは、剪断変形要素を有し、 前記剪断変形要素は前端面と後端面とを有し、 前記剪断変形要素の前記前端面および後端面が、各々、
上方に行くに従い前方に傾斜しており、 このように前記両端面が傾斜していることにより、前記
剪断変形要素は、歩行走行における着地時の荷重により
剪断変形を呈する靴底の緩衝構造。2. A cushioning structure for a shoe sole having a midsole interposed between an upper suitable for wrapping the instep and an outer sole having a tread surface on an outer surface, wherein the midsole comprises: A shear deformation element, wherein the shear deformation element has a front end face and a rear end face, wherein the front end face and the rear end face of the shear deformation element each have:
The shoe sole cushioning structure in which the shear deformation element is sheared by a load at the time of landing during walking while the both end faces are tilted forward as it goes upward. 【請求項３】 請求項１もしくは２において、 前記剪断変形要素が、前記緩衝部またはミッドソールの
他の部分から独立して成形されている靴底の緩衝構造。3. The cushioning structure for a shoe sole according to claim 1, wherein the shear deformation element is formed independently of the cushioning portion or another portion of the midsole. 【請求項４】 請求項１もしくは２において、 前記剪断変形要素が、前記緩衝部またはミッドソールの
他の部分に対し、薄肉連結部を介して一体に成形されて
いる靴底の緩衝構造。4. The shoe sole cushioning structure according to claim 1, wherein the shear deformation element is formed integrally with the cushioning portion or another portion of the midsole via a thin-walled connecting portion. 【請求項５】 請求項１もしくは２において、 前記剪断変形要素が、前記緩衝部またはミッドソールに
おける後足部に設けられている靴底の緩衝構造。5. The shoe sole buffer structure according to claim 1, wherein the shear deformation element is provided on a rear foot portion of the buffer portion or the midsole. 【請求項６】 請求項３，４もしくは５において、 前記剪断変形要素が、足の外側部に設けられている靴底
の緩衝構造。6. The shoe sole cushioning structure according to claim 3, 4 or 5, wherein the shear deformation element is provided on an outer portion of a foot. 【請求項７】 請求項３，４もしくは５において、 前記剪断変形要素が、複数個設けられている靴底の緩衝
構造。7. The shoe sole buffer structure according to claim 3, wherein the plurality of shear deformation elements are provided. 【請求項８】 請求項３ないし７のいずれか１項におい
て、 前記剪断変形要素の平面断面の図心を連ねた軸線が、上
方に行くに従い前方に傾斜している靴底の緩衝構造。8. The cushioning structure for a shoe sole according to claim 3, wherein an axis connecting the centroids of planar cross sections of the shear deformation element is inclined forward as going upward. 【請求項９】 請求項１において、 前記靴底は、甲被に接合されると共に足からの荷重を受
ける支持部材と、前記緩衝部を構成するミッドソール
と、該ミッドソールの下面に形成されたアウターソール
とを備え、 前記剪断変形要素が前記支持部材の底面ないし側面に固
着されている靴底の緩衝構造。9. The shoe sole according to claim 1, wherein the sole is formed on a lower surface of the midsole, the supporting member being joined to an upper and receiving a load from a foot, a midsole constituting the cushioning portion, and a lower surface. An outer sole, wherein the shear deformation element is fixed to a bottom surface or a side surface of the support member. 【請求項１０】 請求項７において、 前記複数の剪断変形要素の間には、該剪断変形要素より
もヤング率の小さい緩衝要素が設けられて、前記各剪断
変形要素が互いに拘束されることなく剪断変形できるよ
うに構成されている靴底の緩衝構造。10. The device according to claim 7, wherein a buffer element having a Young's modulus smaller than that of the shear deformation element is provided between the plurality of shear deformation elements, so that the shear deformation elements are not restrained from each other. A shoe sole cushioning structure that is configured to be shearable.
JP31477599A 1998-11-05 1999-11-05 Shoe cushion structure Expired - Lifetime JP3517168B2 (en)

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