JP3912823B2

JP3912823B2 - Multilayer cup insole

Info

Publication number: JP3912823B2
Application number: JP20902696A
Authority: JP
Inventors: 修大丸
Original assignee: 株式会社大裕商事
Priority date: 1996-07-18
Filing date: 1996-07-18
Publication date: 2007-05-09
Anticipated expiration: 2016-07-18
Also published as: JPH1033204A

Description

【０００１】
【発明の属する技術分野】
本発明は、靴に装入して使用する中敷材であるカップインソールに関する。
【０００２】
【従来の技術】
従来の靴の中敷は、単一素材で足型に切断した平面形状のものと、足裏の形状に合わせて足型凹面にしたカップインソールがある。
前記平面形状のものは廉価に作成できまた、カップインソールは足裏を安定性良く支持できる利点がある。
【０００３】
また、多層構成にして空間部を形成しクッション性及び通気性を向上させようとするものには、実開昭５４ー３７３４０号「履物底」が公開されている。
【０００４】
さらに、本件出願人の出願に係る実公平４ー１８４０３号では、３層以上重ねてなる多層カップインソールにおいて、非通気性で反発性素材の合成樹脂製である下層の足型凹面にした上面に、中央から側周囲へ連通して開口する溝を概略放射状で幅を広狭適宜に形成し、その上に不織布等の通気性素材で底面をフラットに形成した中間層を積層接着したものを開示している。
【０００５】
なおこの従来考案では、前記溝を、足指が位置する前半部ではこの前半部が加圧成型により肉薄で硬化しているため溝幅を広めに形成して屈曲性（柔軟性）と通気性を良好にし、踵部が位置する後半部ではこの後半部が肉厚であり保形性が低下しがちなため溝幅を狭く形成して保形性を損ねないようにしている。
【０００６】
【発明が解決しようとする課題】
しかしながら、従来の中敷材は、次のような問題点がある。
▲１▼平面状中敷材は、踏圧に適したクッション性や疲労軽減性に問題がある。
▲２▼カップインソールは、フィット感があるが凹曲した部分に保熱や湿気が生じる問題がある。
【０００７】
また、前記実開昭５４−３７３４０号「履物底」の構成では、上部部材がメッシュ状であるためポンピングに必要な平坦な面が形成されず、従って空間部の空気は上部部材への加重時のポンピングによる流れを形成できずにスペーサ部材間や周縁空間部に滞留しやすいものであった。
【０００８】
また、実公平４ー１８４０３号は、下層の放射状の溝内部に空気の流れを形成することにより通気性を向上させ、フィット感を良好にしながら湿気や熱を排し、むれない履き心地の良い中敷材を提供するものであるが、歩行時や荷重時に生じるポンピングに復元力が弱いために空気の流れが少し弱い点があった。
【０００９】
溝を空気通路として概略放射状に設けたことで、加重時における足裏からの加重個所の移動に伴ない空気は、側周囲の適切な方向へ溝を通って流れ、この空気を靴内壁面に流すように作用するが、さらには、足の裏の窪み部分へ集中的に流れるように上方に向けて流すことも要請されている。
【００１０】
【課題を解決するための手段】
本発明は、次の下層（１）、中間層（２）、上層（３）からなる多層カップインソールである。
多層カップインソールは、下層（１）の後半部の中央部凹室（１４）と、中間層（２）の後半部の中央部に設けた膨出凸部（２２）とを合わせて空気室（２３）を形成したことが一つの特徴である。
【００１１】
下層（１）は、非通気性の反発性素材にて上面（１１）は足型凹面とし底面（１２）をフラットに形成し、前記上面（１１）において足指が位置する肉薄で硬質な前半部では中央溝から側周囲側へ概略放射状に中途まで延びた先細の溝（１３）を開口幅を広めに形成し、踵部が位置する肉厚の後半部では中央部に凹室（１４）を形成しこれに連通する幅の狭い概略放射状に中途まで延びた溝（１３）を形成している。
溝（１３）は先端側が先細であり、空気放出に勢いがある。
【００１２】
後半部中央部に形成する凹室（１４）の形状は、いわゆる「フイゴ」型や「ナス」型で前方出口を細く形成している。
【００１３】
凹室（１４）を設けた点と先細の溝（１３）が中断している点は、密接な関連がある。ポンピングによる空気の放出力があるので、側周には吐き出さずに、空気の放出方向を溝（１３）を中断させて足裏に当たるように上向きに案内して放出できる構成に改良できたのである。
後半部では、保形性やクッション性を維持するためには凹室（１４）を設けるがそこから連通する溝（１３）を狭く短くすることで保形性を維持したものである。
【００１４】
中間層（２）は不織布や連続気泡を形成した通気性素材又は小孔（２１）を散設した非通気性素材であって、前記下層（１）の上面にフィットする形状で、踵部が位置する後半部の中央部に膨出凸部（２２）を形成している。
膨出凸部（２２）は、復元性があって、裏面に空間を有し、少なくともこの部分は非通気に形成される。
なお中間層（２）の後半部の膨出凸部（２２）の裏面に、下向きの垂下突部（２４）を設ける構成も提案する。
【００１５】
上層（３）は、布材や不織布や連続気泡を形成した通気性素材又は小孔（３１）を散設した皮革材などの非通気性素材で、前記中間層（２）の上面にフィットする略相似立体形である。
【００１６】
空気室（２３）のポンピングの復元力を強化するために前記下層（１）の後半部の凹室（１４）へ、通気性があり、反発弾性がある連続気泡発泡素材片（１６）を装填している。
連続気泡発泡素材片（１６）は、高反発発泡ウレタンフォームやスポンジなどである。
連続気泡発泡素材片（１６）の形状は、水平な底面を広くした側面小山状で、安定して装填できる。
空気室（２３）は、非通気性の素材で上下面を囲まれているので、空気の放出方向を制御して、空気が散乱しないようにスポンジの所定表面に何らかの加工をする必要がない。
なお、連続気泡発泡素材片（１６）を非通気性で形状復元性素材の袋体に入れ、先端にホースを装填して、放出方向を制御することもできる。
【００１７】
さらに異なる構成として前記下層（１）の後半部の中央部に凹室（１４）に、ポンピングの復元力と保形性を保証するための前方側を低くした上向きの多数の弾性突起（１５）を立設したものを提案する。
弾性突起（１５）は、根本部が太いテーパーに形成した平面視で翼断面の流線形や楕円柱状であり、先端は平坦にして、略下層（１）の上面と水平な高さ又は少し突出する高さである。
弾性突起（１５）は、多数本並列に立設され、相互の間隙が、空気流路を形成する。弾性突起（１５）の前記形状で少量空気を、上方へかつ前方へ送り出す。
空気を放射方向に分散する場合にも適する。
なお連続気泡発泡素材片（１６）に弾性突起（１５）に相応する孔を形成し、これを弾性突起（１５）を備えた凹室（１４）に嵌合して、両者を併用することもできる。
【００１８】
本発明では、歩行時のポンピングにより、中央部に凹室（１４）には、大きな容量の空気が吸入され、荷重により溝（１３）内部に空気の流れを大きく作ることができる。
【００１９】
さらに溝（１３）を空気通路として概略放射状に設けかつ中断させたことで、歩行時における足裏からの荷重個所の移動に伴ない空気は、溝（１３）を通って流れ、足裏に当たる上方へ排出されるようになり、内部空気をきわめて効果的に利用できる。
【００２０】
また前記溝（１３）を、足指が位置する前半部ではこの前半部が加圧成型により肉薄で硬化しているため溝幅を広めに形成して屈曲性（柔軟性）と通気性を良好にし、踵部が位置する後半部ではこの後半部が肉厚であり保形性が低下しがちなため溝幅を狭く形成して保形性を損ねないようにする技術も併用している。
溝（１３）の深さと形状は用途により種々の態様が設計できる。
【００２１】
【発明の実施の形態】
図１は、本発明に係る多層カップインソールの一実施例を示す分解斜視図であある。図２は、同じく側面断面図である。
多層カップインソールは、異なる素材を多重層に重ね合わせたもので、下層（１）と中間層（２）と上層（３）の３層からなる。
【００２２】
下層（１）は、２〜７mmの比較的肉厚な非通気性の反発性素材で形成され、底面はフラットで靴内底面にフィットする形状であり、その上面は足裏の形状に合わせて足型凹面にしている。
下層（１）は、ＰＥ発泡体、ＥＶＡ発泡体、ゴム発泡体等である。
カップインソールの用途により、反発性（クッション性）を調合調整して作成される。
素材の発泡倍率は、溝（１３）が潰れず、クッション性が維持できる範囲となる。
下層（１）は、あらかじめ個別に製作しておき、中間層（２）と接着される。
【００２３】
下層（１）は、非通気性の反発性素材にて上面（１１）は足型凹面とし底面（１２）をフラットに形成し、前記上面（１１）において足指が位置する肉薄で硬質な前半部では中央溝（１３）を形成しこれから側周囲側へ概略放射状に中途まで延びた先細の溝（１３）を開口幅を広めに形成し、踵部が位置する肉厚の後半部では中央部に凹室（１４）を形成しこれに連通する幅の狭い概略放射状に中途まで延びた先細の溝（１３）を形成している。
溝（１３）は、中途で終り外周辺には達しない長さであり、足裏に直接に空気が当たるようにしている。
しかも中途で先細であることは、保形性を長期に維持できる効果がある。
中央部の凹室（１４）は、空気を入れる十分な空間を形成している。
【００２４】
溝（１３）を下層（１）の上面中央から放射状に形成したことにより、荷重時の足裏からの荷重個所の移動に伴ない溝（１３）内部の空気が適切な方向へ分散してスムーズに流れるようにしている。
溝（１３）の深さや形状は、反発性素材のクッション性や用途等の相違により種々設計の変更やパターン化が可能である。
溝（１３）は、足指が位置する前半部では開口幅を広めに或いは数を多く形成して柔軟性（屈曲性）と通気性を良好にし、踵部が位置する後半部では幅を狭く或いは数を少なく形成して保形性を損ねないようにしている。
このような溝（１３）のパターンは、合成樹脂発泡シート材やゴムスポンジ板等を熱プレス成型する際の問題点をも解決し、素材の選択巾を広げることになる。
つまり、下層（１）の製造において加圧成型する時は、型の前・後半部の形状の差異による圧縮率の差が下層（１）の肉厚の相違を形成し硬軟の分布を決定することになり、下層（１）の前半部は高圧圧縮で肉薄で硬化し、下層（１）の後半部は低圧圧縮で肉厚で保形性が低い、という問題点があるが、溝（１３）を中途までとし先細にすることを基本に維持すると、前・後半部において幅、数、深さを適宜形成することにより、柔軟性や屈曲性を保って、全体の保形性を維持できる。
【００２５】
中間層（２）は、目の粗い不織布を上面を凹曲面に底面をフラットにプレス成型したものや、連続気泡を形成した通気性素材、又は小孔（３１）を散設した非通気性素材であって、前記下層（１）の上面にフィットする形状で、踵部が位置する後半部の中央部に復元性の膨出凸部（２２）を形成したものである。
中間層（２）は下層（１）の溝（１３）を閉塞することなく下層（１）の上面に積層接着される。
下層（１）の中央部の凹室（１４）と中間層（２）の中央部に膨出凸部（２２）とが形成する空間は、十分な量の空気室（２３）となる。
中間層（２）は、底面をフラットに形成しているので、荷重時のポンピングにより空気室（２３）の空気や溝（１３）内部の空気を漏らすことなく流し出すのである。
なお、図５のように中間層（２）の膨出凸部（２２）の裏面に、下層（１）の中央部の凹室（１４）に入り込む下向きの垂下突部（２４）を設ける構成も提案する。
この構成では、踵のポンピングで、垂下突部（２４）が凹室（１４）に入り込み空気室（２３）を圧縮することになる。
垂下突部（２４）は後方部が高く、前方に傾斜している形状がポンピングに好ましい。
【００２６】
中間層（２）の上に設ける上層（３）は、装飾或いは吸湿のために例えば、布や皮革で形成したものであり、用途によって所定の二次加工（吸湿剤や発水剤を噴霧加工）をして使い分けられる。
上層（３）は、布材や不織布や連続気泡を形成した通気性素材でもよいが、図では小孔（３１）を散設した皮革材などの非通気性素材で形成したものを示している。
小孔（３１）の配置は、足指の間や足裏の窪みなどの、比較的汗をかきやすいところに放出する配置である。
形状は、前記中間層（２）の上面にフィットする略相似立体形であり、後半部に膨出部（３２）を形成している。
上層（３）は、抗菌・防臭・防カビの処理をした製品や、サッパリ感がある吸湿性素材などが採用できる。
そのほか、遠赤外線の発生するセラミック粉末の混入繊維を用いたもの、抗菌のために銅粉末を混入した繊維を用いたもの、抗菌のために笹の葉エキスに浸漬したもの、防水処理をしたものなど適宜素材と組み合わせることができる。
【００２７】
前記下層（１）の後半部の凹室（１４）へは、通気性があり、反発弾性がある硬めのスポンジである連続気泡発泡素材片（１６）を装填している。
連続気泡発泡素材片（１６）は、空気を保有し、非通気性の素材で上下面を囲まれているので、押圧で出口からのみ空気を放出する。
なお空気が散乱しないようにスポンジの所定表面に塗料を塗布したりすることもできる。
【００２８】
図３・図４は、異なる構成として前記下層（１）の後半部の中央部に凹室（１４）に、ポンピングの復元力と保形性を保証するための上向きの多数の弾性突起（１５）を立設したものである。
弾性突起（１５）は、先端は平坦にして、略下層（１）の上面から水平か、又は少し突出し中間層（２）の膨出凸部（２２）に接する高さである。
弾性突起（１５）は、踵のあらゆる方向からの押圧に対して収縮し開放により復元する構成であることが必要であり、後方側を高くし、前方側を少し低くして、押し出された空気が前方に進行するようにしている。
弾性突起（１５）は、根本部が太いテーパーに形成した平面視で翼断面の流線形や楕円柱状である。
弾性突起（１５）は、多数本並列に立設され、相互の間隙が、空気流路を形成する。弾性突起（１５）の前記形状で少量空気を、上方へかつ前方へ効率よく送り出す。
弾性突起（１５）を設けると空気を放射方向に分散する場合に適し、連続気泡発泡素材片（１６）に弾性突起（１５）に相応する孔を形成し、これを弾性突起（１５）を備えた凹室（１４）に嵌合して併用することもできる。
【００２９】
これらの構成で、ポンピングが安定し、足裏の適切な位置に直接に適量の空気がまんべんなく当たり、かつ全体として保形性を長期に維持できる多層カップインソールが提供できる。
【００３０】
【実施例】
５ｍｍ厚のＰＥ発泡体で、溝（１３）と凹部（１４）を形成した下層（１）を作成し、前記凹部（１４）にスポンジ（１６）を装填し、下層（１）の上面に接着剤を塗布して、所定位置に小孔（２１）を穿設した不織布中間層（２）を接合した。
下層（１）と中間層（２）とは、後半部に空気室（２３）を形成し、これに連通した溝（１３）を放射状に内部に形成している。
上層（３）として抗菌・防臭・防カビの二次処理をした通気性・吸湿性布材で作成し、スポットに接着剤を塗布して一体化し、３層のカップインソールを作成した。
【００３１】
【発明の効果】
本発明に係る多層カップインソールは、前記の構成であり、次のような特有な技術的効果がある。
【００３２】
請求項１・請求項２の発明は、反発性素材である下層の内部に空気室を形成し、かつ下層の上面に溝を形成して、この溝を空気通路として足裏に直接に上向きに空気を吹き出すことができるものである。
溝を形成した下層の上面に、底面をフラットに形成した通気性素材を重ねたことで、ロスなく空気の動きを作ることができる。
特に空気室の構成は、スポンジが入っていて反発復元性があり、連続ポンピングが可能でフイゴのような形状でもあり、強い空気の流れを作ることができる。
しかも空気室を形成しても保形性を損ねないために、これに連通する放射状の溝はインソールの部位により幅に広狭をつけてあり、かつ溝は外周迄は到達しない先細で、全体の強度の要請にも答えている。
溝を概略放射状に形成し中間層に小孔を設けて足裏の所定の位置に集中的に通気するので、湿気の排出や温熱の排出などムレ防止や換気に大きな効果がある。
【００３３】
請求項３の発明は、空気室に多数の特異形状の弾性突起を形成し、ポンピングの作用をより保証している。
【００３４】
請求項４の発明は、中間層に下向きの垂下突部を形成し、下層の凹部に侵入して空気の放出力を高めている。
以上のように、本発明に係る多層カップインソールは、中敷材に要請される柔軟性、屈曲性、反発性、保形性を維持しながら、足裏をしっかり包み、十分な通気性・換気性を達成したものできわめて優れている。
【図面の簡単な説明】
【図１】本発明に係る多層カップインソールの一実施例を示す分解斜視図。
【図２】上記と同じ実施例で、結合した状態の側面断面図。
【図３】本発明に係る多層カップインソールの異なる実施例を示す分解斜視図。
【図４】上記と同じ実施例で、結合した状態の側面断面図。
【図５】同じく異なる実施例を示す側面断面図。
【符号の説明】
（１）下層
（１１）上面
（１２）底面
（１３）溝
（１４）凹部
（１５）弾性突起
（１６）連続気泡発泡素材片（スポンジ）
（２）中間層
（２１）小孔
（２２）膨出凸部
（２３）空気室
（２４）垂下突部
（３）上層
（３１）小孔
（３２）膨出部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cup insole which is an insole material used by being inserted into shoes.
[0002]
[Prior art]
Conventional insoles include a flat material cut into a foot shape with a single material, and a cup insole that has a concave foot shape according to the shape of the sole.
The planar shape can be produced at a low cost, and the cup insole has an advantage that the sole can be stably supported.
[0003]
Japanese Utility Model Publication No. 54-37340 “Foot sole” has been disclosed for the purpose of improving the cushioning and air permeability by forming a space portion in a multilayer structure.
[0004]
Furthermore, in Japanese Utility Model Application No. 4-18403 relating to the application of the present applicant, in a multi-layer cup insole formed by stacking three or more layers, on the upper surface of the lower foot-shaped concave surface made of a synthetic resin of non-breathable and repulsive material. In addition, a groove that is open from the center to the side periphery is formed in a generally radial and wide width, and an intermediate layer having a flat bottom surface made of a breathable material such as a nonwoven fabric is laminated and adhered. ing.
[0005]
In this conventional device, the groove is formed in the first half where the toes are located, and the first half is thin and hardened by pressure molding, so that the groove width is widened to provide flexibility (flexibility) and air permeability. In the latter half where the collar is located, the latter half is thick and the shape retention tends to be lowered. Therefore, the groove width is narrowed so as not to impair the shape retention.
[0006]
[Problems to be solved by the invention]
However, the conventional insole material has the following problems.
(1) The planar insole material has a problem in cushioning and fatigue reduction suitable for treading pressure.
(2) The cup insole has a feeling of fitting, but there is a problem that heat retention and moisture are generated in a concave portion.
[0007]
Further, in the construction of the above-mentioned Japanese Utility Model Publication No. 54-37340 “Foot sole”, since the upper member is mesh-like, a flat surface necessary for pumping is not formed. The flow due to the pumping cannot be formed, and it is likely to stay between the spacer members or in the peripheral space.
[0008]
In addition, No. 4-18403 improves air permeability by forming an air flow inside the lower radial groove, eliminates moisture and heat while improving fit, and is comfortable to wear. The insole material is provided, but there is a point that the air flow is a little weak because the restoring force is weak in the pumping that occurs when walking or loading.
[0009]
By providing the grooves roughly radially as air passages, the air accompanying the movement of the weighted part from the sole during weighting flows through the groove in the appropriate direction around the side, and this air flows to the inner wall surface of the shoe. Although it acts so as to flow, it is also required to flow upward so that it flows intensively to the recessed portion of the sole of the foot.
[0010]
[Means for Solving the Problems]
The present invention is a multilayer cup insole comprising the following lower layer (1), intermediate layer (2), and upper layer (3).
The multilayer cup insole is formed by combining an air chamber (14) with a central concave chamber (14) in the rear half of the lower layer (1) and a bulging convex portion (22) provided in the central part of the rear half of the intermediate layer (2). One feature is that 23) is formed.
[0011]
The lower layer (1) is a non-breathable repulsive material, the upper surface (11) is a foot-shaped concave surface and the bottom surface (12) is formed flat, and the thin and hard first half where the toes are located on the upper surface (11) The taper groove (13) extending radially from the central groove to the middle of the side is formed in the part with a wide opening width, and the concave part (14) in the central part in the thick rear half part where the collar is located A narrow groove (13) extending in the middle and in a narrow radial pattern is formed.
The groove (13) is tapered on the tip side and has a momentum for air discharge.
[0012]
The shape of the concave chamber (14) formed in the central part of the second half is a so-called “Fuigo” type or “Nasu” type, and the front outlet is formed narrowly.
[0013]
The point where the concave chamber (14) is provided and the point where the tapered groove (13) is interrupted are closely related. Since there is an air discharge output by pumping, the air discharge direction can be improved to a structure that can guide and release the air upward in order to hit the sole by interrupting the groove (13) without discharging to the side periphery. .
In the latter half, a concave chamber (14) is provided in order to maintain shape retention and cushioning properties, but the shape retention is maintained by narrowing and shortening the groove (13) communicating therewith.
[0014]
The intermediate layer (2) is a non-breathable material in which non-woven fabric or open cells are formed or a non-breathable material in which small holes (21) are scattered, and has a shape that fits the upper surface of the lower layer (1), The bulging convex part (22) is formed in the center part of the rear half part located.
The bulging convex portion (22) has a restoring property and has a space on the back surface, and at least this portion is formed to be non-ventilated.
A configuration is also proposed in which a downward hanging protrusion (24) is provided on the back surface of the bulging protrusion (22) in the latter half of the intermediate layer (2).
[0015]
The upper layer (3) is a non-breathable material such as a cloth material, a non-woven fabric, a breathable material in which open cells are formed, or a leather material in which small holes (31) are scattered, and fits the upper surface of the intermediate layer (2). It is a substantially similar three-dimensional shape.
[0016]
In order to strengthen the restoring force of the pumping of the air chamber (23), the open cell foam material piece (16) having air permeability and rebound resilience is loaded into the concave chamber (14) in the latter half of the lower layer (1). is doing.
The open cell foam material piece (16) is a highly repellent urethane foam or sponge.
The shape of the open-cell foam material piece (16) is a side hill shape with a wide horizontal bottom surface, and can be stably loaded.
Since the upper and lower surfaces of the air chamber (23) are surrounded by a non-breathable material, it is not necessary to control the release direction of the air and to perform any processing on the predetermined surface of the sponge so that the air is not scattered.
It is also possible to control the discharge direction by placing the open-cell foamed material piece (16) in a non-breathable and shape-recoverable material bag and loading a hose at the tip.
[0017]
Further, as a different configuration, a large number of upward elastic protrusions (15) with a lower front side in order to guarantee the restoring force and shape retention of the pumping in the concave chamber (14) in the center of the latter half of the lower layer (1) We propose what we set up.
The elastic protrusion (15) has a streamlined or elliptical columnar shape in cross section of the blade in a plan view formed with a taper with a thick root portion, and has a flat tip and is substantially level or slightly protruding from the upper surface of the lower layer (1). It is the height to do.
Many elastic protrusions (15) are erected in parallel, and a gap between them forms an air flow path. A small amount of air is sent upward and forward in the shape of the elastic protrusion (15).
It is also suitable when air is dispersed in the radial direction.
It is also possible to form a hole corresponding to the elastic protrusion (15) in the open-cell foam material piece (16) and fit it into the concave chamber (14) provided with the elastic protrusion (15) so that both are used together. it can.
[0018]
In the present invention, a large volume of air is sucked into the concave chamber (14) at the center by pumping during walking, and a large air flow can be created inside the groove (13) by the load.
[0019]
Further, the groove (13) is provided as a substantially radial air passage and is interrupted, so that air accompanying the movement of the load part from the sole during walking flows through the groove (13) and hits the sole. The internal air can be used very effectively.
[0020]
In addition, the groove (13) is formed with a wider groove width in the front half where the toes are located, and the front half is thin and hardened by pressure molding, so that flexibility (flexibility) and air permeability are good. In addition, in the latter half portion where the collar portion is located, the latter half portion is thick and the shape retaining property tends to be lowered. Therefore, a technique of narrowing the groove width so as not to impair the shape retaining property is also used.
The depth and shape of the groove (13) can be designed in various ways depending on the application.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is an exploded perspective view showing an embodiment of a multilayer cup insole according to the present invention. FIG. 2 is a side sectional view of the same.
The multi-layer cup insole is made by stacking different materials on multiple layers, and consists of three layers: a lower layer (1), an intermediate layer (2), and an upper layer (3).
[0022]
The lower layer (1) is formed of a relatively thick non-breathable and repellent material having a thickness of 2 to 7 mm. The bottom surface is flat and fits into the bottom surface of the shoe, and the top surface matches the shape of the sole. It has a foot-shaped concave surface.
The lower layer (1) is a PE foam, EVA foam, rubber foam or the like.
It is created by blending and adjusting the resilience (cushioning property) depending on the use of the cup insole.
The foaming ratio of the material is in a range where the groove (13) is not crushed and the cushioning property can be maintained.
The lower layer (1) is manufactured separately in advance and bonded to the intermediate layer (2).
[0023]
The lower layer (1) is a non-breathable repulsive material, the upper surface (11) is a foot-shaped concave surface and the bottom surface (12) is formed flat, and the thin and hard first half where the toes are located on the upper surface (11) The central groove (13) is formed in the part, and the taper groove (13) extending radially radially from the side to the peripheral side is formed with a wide opening width. A concave chamber (14) is formed in this, and a narrow groove (13) extending to the middle in a narrow radial pattern communicating with this is formed.
The groove (13) has a length that ends midway and does not reach the outer periphery, so that air directly hits the sole.
Moreover, tapering in the middle has the effect of maintaining shape retention for a long time.
The central concave chamber (14) forms a sufficient space for air.
[0024]
By forming the groove (13) radially from the center of the upper surface of the lower layer (1), the air inside the groove (13) is dispersed in an appropriate direction along with the movement of the load part from the sole at the time of loading, and is smooth. To flow into.
The depth and shape of the groove (13) can be variously changed in design and patterned depending on the cushioning property of the repulsive material and the use.
The groove (13) has a wide opening width or a large number in the front half where the toes are located to improve flexibility (flexibility) and air permeability, and a narrow width in the latter half where the heel is located. Alternatively, a small number is formed so as not to impair the shape retention.
Such a pattern of the grooves (13) also solves the problems in hot press molding a synthetic resin foam sheet material, a rubber sponge plate, etc., and widens the selection range of materials.
That is, when pressure molding is performed in the production of the lower layer (1), the difference in compression rate due to the difference in shape between the front and rear half of the mold forms the difference in the thickness of the lower layer (1) and determines the hardness distribution. Thus, the first half of the lower layer (1) is thin and hardened by high-pressure compression, and the second half of the lower layer (1) is low-pressure compressed and thick and has low shape retention. ) To the midway and tapering, it is possible to maintain flexibility and flexibility and maintain the overall shape retention by forming the width, number and depth as appropriate in the front and rear half. .
[0025]
The intermediate layer (2) is a non-breathable material in which a nonwoven fabric with a rough surface is press-molded with a concave curved upper surface and a flat bottom surface, a breathable material in which open cells are formed, or small holes (31) are scattered. In this case, a shape that fits the upper surface of the lower layer (1) is formed with a recoverable bulging convex portion (22) at the central portion of the latter half portion where the collar portion is located.
The intermediate layer (2) is laminated and bonded to the upper surface of the lower layer (1) without closing the groove (13) of the lower layer (1).
The space formed by the concave chamber (14) at the center of the lower layer (1) and the bulging convex portion (22) at the central portion of the intermediate layer (2) is a sufficient amount of air chamber (23).
Since the intermediate layer (2) has a flat bottom surface, the air in the air chamber (23) and the air inside the groove (13) flow out without leaking by pumping during loading.
In addition, the structure which provides the downward drooping protrusion (24) which enters the concave chamber (14) of the center part of lower layer (1) in the back surface of the bulging convex part (22) of the intermediate | middle layer (2) like FIG. I also propose.
In this configuration, the drooping projection (24) enters the concave chamber (14) and compresses the air chamber (23) by pumping of the kite.
The drooping protrusion (24) has a high rear part and is preferably inclined to the front for pumping.
[0026]
The upper layer (3) provided on the intermediate layer (2) is formed of, for example, cloth or leather for decoration or moisture absorption, and is subjected to predetermined secondary processing (spraying with a moisture absorbent or water generating agent depending on the application). ) Can be used properly.
The upper layer (3) may be a cloth material, a non-woven fabric, or a breathable material in which open cells are formed, but in the figure, it is formed of a non-breathable material such as leather material in which small holes (31) are scattered. .
The arrangement of the small holes (31) is an arrangement that discharges to places where it is relatively easy to sweat, such as between the toes and the bottom of the sole.
The shape is a substantially similar three-dimensional shape that fits the upper surface of the intermediate layer (2), and the bulging portion (32) is formed in the rear half.
For the upper layer (3), products treated with antibacterial, deodorant, and mildew and hygroscopic materials with a refreshing feeling can be used.
In addition, those using fibers mixed with ceramic powder that generates far-infrared rays, those using fibers mixed with copper powder for antibacterial purposes, those immersed in bamboo leaf extract for antibacterial purposes, and waterproofed It can be combined with materials as appropriate.
[0027]
The recessed chamber (14) in the latter half of the lower layer (1) is filled with an open-cell foam material piece (16) which is a hard sponge having air permeability and resilience.
Since the open-cell foamed material piece (16) retains air and is surrounded by upper and lower surfaces with a non-breathable material, air is released only from the outlet by pressing.
It is also possible to apply paint to a predetermined surface of the sponge so that air is not scattered.
[0028]
FIG. 3 and FIG. 4 show a different configuration in which a concave chamber (14) is provided at the center of the rear half of the lower layer (1), and a number of upward elastic protrusions (15) for ensuring the restoring force and shape retention of pumping. ).
The elastic protrusion (15) has a flat tip and is substantially level from the upper surface of the lower layer (1) or slightly protrudes and touches the bulging protrusion (22) of the intermediate layer (2).
The elastic protrusion (15) needs to have a structure that contracts against pressure from all directions of the heel and restores by opening, and the rear side is raised, the front side is slightly lowered, and the extruded air Is going forward.
The elastic protrusion (15) has a streamlined or elliptical column shape of the blade cross section in a plan view formed in a taper with a thick root portion.
Many elastic protrusions (15) are erected in parallel, and a gap between them forms an air flow path. With the shape of the elastic protrusion (15), a small amount of air is efficiently sent upward and forward.
Providing the elastic protrusion (15) is suitable for the case where air is dispersed in the radial direction, and a hole corresponding to the elastic protrusion (15) is formed in the open-cell foamed material piece (16), which is provided with the elastic protrusion (15). It can also be used together by fitting into the concave chamber (14).
[0029]
With these configurations, it is possible to provide a multi-layer cup insole in which pumping is stable, an appropriate amount of air directly hits an appropriate position on the sole, and overall shape retention can be maintained for a long time.
[0030]
【Example】
A lower layer (1) in which grooves (13) and recesses (14) are formed is made of 5 mm thick PE foam, sponge (16) is loaded into the recesses (14), and bonded to the upper surface of the lower layer (1). The non-woven fabric intermediate layer (2) having small holes (21) formed at predetermined positions was joined by applying the agent.
The lower layer (1) and the intermediate layer (2) form an air chamber (23) in the rear half, and radially form grooves (13) communicating with the air chamber (23).
The upper layer (3) was made of a breathable / hygroscopic cloth material subjected to secondary treatment of antibacterial / deodorant / mold prevention, and an adhesive was applied to the spots to integrate them to form a three-layer cup insole.
[0031]
【The invention's effect】
The multilayer cup insole according to the present invention has the above-described configuration and has the following technical effects.
[0032]
In the first and second aspects of the present invention, an air chamber is formed inside the lower layer, which is a repulsive material, and a groove is formed on the upper surface of the lower layer. Air can be blown out.
By laying a breathable material with a flat bottom surface on the upper surface of the lower layer where the grooves are formed, air movement can be created without loss.
In particular, the air chamber has a sponge and resilience and resilience, is capable of continuous pumping, has a shape like a figo, and can produce a strong air flow.
Moreover, in order not to impair the shape retention even if the air chamber is formed, the radial groove communicating with the air chamber is widened and narrowed by the insole portion, and the groove is tapered so as not to reach the outer periphery. It also responds to demands for strength.
Grooves are formed almost radially and small holes are provided in the intermediate layer so that air is intensively ventilated at a predetermined position on the sole, so that it has a great effect on prevention of stuffiness and ventilation such as exhausting moisture and exhausting heat.
[0033]
According to the invention of claim 3, a large number of elastic protrusions having a unique shape are formed in the air chamber, and the action of pumping is further ensured.
[0034]
According to a fourth aspect of the present invention, a downward projecting portion is formed in the intermediate layer, and the air enters and exits the concave portion of the lower layer to increase the air discharge.
As described above, the multilayer cup insole according to the present invention firmly wraps the sole while maintaining the flexibility, flexibility, resilience, and shape retention required for the insole material, and provides sufficient ventilation and ventilation. It has achieved the characteristics and is very good.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of a multilayer cup insole according to the present invention.
FIG. 2 is a side cross-sectional view showing a combined state in the same embodiment as above.
FIG. 3 is an exploded perspective view showing different embodiments of the multilayer cup insole according to the present invention.
FIG. 4 is a side sectional view showing a combined state in the same embodiment as above.
FIG. 5 is a side sectional view showing another embodiment.
[Explanation of symbols]
(1) Lower layer (11) Upper surface (12) Bottom surface (13) Groove (14) Recess (15) Elastic protrusion (16) Open-cell foam material piece (sponge)
(2) Middle layer (21) Small hole (22) Swelling protrusion (23) Air chamber (24) Drooping projection (3) Upper layer (31) Small hole (32) Swelling part

Claims

A multilayer cup insole comprising the following lower layer (1), intermediate layer (2), upper layer (3),
The lower layer (1) is a non-breathable and repellent material, the upper surface is concave to the foot and the bottom surface is flat. The thin and hard front half where the toes are located on the upper surface is surrounded by the central groove (13). A tapered groove (13) extending radially radially to the side is formed with a wide opening width, and a concave chamber (14) with a narrow front outlet is formed in the center in the thick rear half where the collar is located In addition, a narrow groove (13) extending in a radially extending manner and communicating with the narrow groove (13) is formed, and includes a concave chamber (14) in the latter half of the lower layer (1) and an intermediate layer (2 described later). ) An air chamber (23) is formed with the bulging convex portion (22) in the center of the latter half,
The intermediate layer (2) is a non-breathable material in which non-woven fabric or open cells are formed or a non-breathable material in which small holes (21) are scattered, and has a shape that fits the upper surface of the lower layer (1), A bulging convex part (22) having resilience is formed in the center part of the rear half part located,
The upper layer (3) is a cloth material, non-woven fabric, breathable material in which open cells are formed, or a non-breathable material in which small holes (31) are scattered, and has a substantially similar three-dimensional shape that fits the upper surface of the intermediate layer (2). Yes,
Open cell foam having rebound resilience in the air chamber (23) formed by the concave chamber (14) in the rear half of the lower layer (1) and the bulging convex part (22) in the center of the rear half of the intermediate layer (2). A multilayer cup insole characterized by being loaded with a piece of material (16).

A multilayer cup insole comprising the following lower layer (1), intermediate layer (2), upper layer (3),
The lower layer (1) is a non-breathable and repellent material, the upper surface is concave to the foot and the bottom surface is flat. The thin and hard front half where the toes are located on the upper surface is surrounded by the central groove (13). A tapered groove (13) extending radially radially to the side is formed with a wide opening width, and a concave chamber (14) is formed in the central portion in the thick rear half where the collar is located, and communicates with this. A narrow groove (13) extending radially in the middle and having a narrow width is formed, and a concave chamber (14) in which the front outlet of the latter half of the lower layer (1) is narrowed and an intermediate layer (2) to be described later ) An air chamber (23) is formed with the bulging convex portion (22) in the center of the latter half,
The intermediate layer (2) is a non-breathable material in which non-woven fabric or open cells are formed or a non-breathable material in which small holes (21) are scattered, and has a shape that fits the upper surface of the lower layer (1), A bulging convex part (22) having resilience is formed in the center part of the rear half part located,
The upper layer (3) is a cloth material, non-woven fabric, breathable material in which open cells are formed, or a non-breathable material in which small holes (31) are scattered, and has a substantially similar three-dimensional shape that fits the upper surface of the intermediate layer (2). Yes,
Open cell foam having rebound resilience in the air chamber (23) formed by the concave chamber (14) in the rear half of the lower layer (1) and the bulging convex part (22) in the center of the rear half of the intermediate layer (2). It is loaded with a piece of material (16),
A multi-layer cup insole characterized in that a large number of elastic protrusions (15) having a lower front side are provided with gaps in a concave chamber (14) at the center of the latter half of the lower layer (1) .

A multilayer cup insole comprising the following lower layer (1), intermediate layer (2), upper layer (3),
The lower layer (1) is a non-breathable and repellent material, the upper surface is concave to the foot and the bottom surface is flat. The thin and hard front half where the toes are located on the upper surface is surrounded by the central groove (13). A tapered groove (13) extending radially radially to the side is formed with a wide opening width, and a concave chamber (14) is formed in the central portion in the thick rear half where the collar is located, and communicates with this. A narrow groove (13) extending radially in the middle and having a narrow width is formed, and a concave chamber (14) in which the front outlet of the latter half of the lower layer (1) is narrowed and an intermediate layer (2) to be described later ) An air chamber (23) is formed with the bulging convex portion (22) in the center of the latter half,
The intermediate layer (2) is a non-breathable material in which non-woven fabric or open cells are formed or a non-breathable material in which small holes (21) are scattered, and has a shape that fits the upper surface of the lower layer (1), A bulging convex part (22) having resilience is formed in the center part of the rear half part located,
The upper layer (3) is a cloth material, non-woven fabric, breathable material in which open cells are formed, or a non-breathable material in which small holes (31) are scattered, and has a substantially similar three-dimensional shape that fits the upper surface of the intermediate layer (2). Yes,
Open cell foam having rebound resilience in the air chamber (23) formed by the concave chamber (14) in the rear half of the lower layer (1) and the bulging convex part (22) in the center of the rear half of the intermediate layer (2). It is loaded with a piece of material (16),
A multi-layer cup insole characterized in that a downward hanging protrusion (24) is provided on the back surface of the bulging protrusion (22) in the latter half of the intermediate layer (2).

A multilayer cup insole comprising the following lower layer (1), intermediate layer (2), upper layer (3),
The lower layer (1) is a non-breathable and repellent material, the upper surface is concave to the foot and the bottom surface is flat. The thin and hard front half where the toes are located on the upper surface is surrounded by the central groove (13). A tapered groove (13) extending radially radially to the side is formed with a wide opening width, and a concave chamber (14) is formed in the central portion in the thick rear half where the collar is located, and communicates with this. A narrow groove (13) extending radially in the middle and having a narrow width is formed, and a concave chamber (14) in which the front outlet of the latter half of the lower layer (1) is narrowed and an intermediate layer (2) to be described later ) An air chamber (23) is formed with the bulging convex portion (22) in the center of the latter half,
The intermediate layer (2) is a non-breathable material in which non-woven fabric or open cells are formed or a non-breathable material in which small holes (21) are scattered, and has a shape that fits the upper surface of the lower layer (1), A bulging convex part (22) having resilience is formed in the center part of the rear half part located,
The upper layer (3) is a cloth material, non-woven fabric, breathable material in which open cells are formed, or a non-breathable material in which small holes (31) are scattered, and has a substantially similar three-dimensional shape that fits the upper surface of the intermediate layer (2). Yes,
Open cell foam having rebound resilience in the air chamber (23) formed by the concave chamber (14) in the rear half of the lower layer (1) and the bulging convex part (22) in the center of the rear half of the intermediate layer (2). It is loaded with a piece of material (16),
A large number of elastic projections (15) with a lower front side are provided in the concave chamber (14) at the center of the latter half of the lower layer (1), and the open cell foam material piece (16) corresponds to the elastic projections (15). Is a hole that is erected with a gap,
A multi-layer cup insole characterized in that a downward hanging protrusion (24) is provided on the back surface of the bulging protrusion (22) in the latter half of the intermediate layer (2).