JP7072947B1 - Work shoes - Google Patents

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JP7072947B1
JP7072947B1 JP2021118092A JP2021118092A JP7072947B1 JP 7072947 B1 JP7072947 B1 JP 7072947B1 JP 2021118092 A JP2021118092 A JP 2021118092A JP 2021118092 A JP2021118092 A JP 2021118092A JP 7072947 B1 JP7072947 B1 JP 7072947B1
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outsole
heel
hollow structure
wall thickness
work
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JP2023013717A (en
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隆一 佐藤
一世 千葉
尚弥 横山
勇 鹿野
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弘進ゴム株式会社
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Priority to CN202280021521.8A priority patent/CN117042648A/en
Priority to KR1020237030877A priority patent/KR20230146568A/en
Priority to PCT/JP2022/026563 priority patent/WO2023286647A1/en
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    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole-and-heel integral units
    • A43B13/14Soles; Sole-and-heel integral units characterised by the constructive form
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole-and-heel integral units
    • A43B13/14Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/22Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/02Uppers; Boot legs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00Producing footwear
    • B29D35/02Producing footwear made in one piece using a moulding technique, e.g. by injection moulding or casting

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

【課題】高い耐滑性を安定的に得ることができ、軽量で歩行しやすい作業靴を提供する。【解決手段】アッパー2と、該アッパー2の底部に接合されるベース部31及び該ベース部31の底面に形成されたブロック意匠32を有するアウトソール3とを備える作業靴1において、アウトソール3は、ベース部31の肉厚が略全面にわたって均一に形成されている。【選択図】図1PROBLEM TO BE SOLVED: To provide work shoes which can stably obtain high slip resistance and are lightweight and easy to walk. SOLUTION: In a work shoe 1 including an upper 2 and an outsole 3 having a base portion 31 joined to the bottom portion of the upper portion 2 and a block design 32 formed on the bottom surface of the base portion 31, the outsole 3 is provided. Is formed so that the wall thickness of the base portion 31 is uniformly formed over substantially the entire surface. [Selection diagram] Fig. 1

Description

本発明は、例えば、水、油等による滑りを抑えた靴底を用いた作業靴に関する。 The present invention relates to, for example, work shoes using a sole that suppresses slippage due to water, oil, or the like.

食品加工工場や飲食店の厨房等においては、水や油等の滑りやすい液体が床上に付着していることが多く、作業中の歩行に際して滑るおそれがある。このため、このような比較的滑りやすい場所で作業を行う作業者は、水や油等による滑りを抑えた耐滑性の高い靴底を備える作業靴を使用することが望ましい。 In food processing factories, kitchens of restaurants, etc., slippery liquids such as water and oil often adhere to the floor, and there is a risk of slipping when walking during work. Therefore, it is desirable for workers who work in such a relatively slippery place to use work shoes having a sole with high slip resistance that suppresses slipping due to water, oil, or the like.

従来、この種の作業靴に設けられる靴底において、耐滑性を向上させる構造として、接地部の硬さを規定すると共に、この接地部に設けられる複数の凹凸によるブロック意匠を規定したものが知られている(例えば、特許文献1参照)。 Conventionally, in the sole provided for this type of work shoe, as a structure for improving slip resistance, it is known that the hardness of the ground contact portion is specified and the block design by a plurality of irregularities provided on the ground contact portion is specified. (See, for example, Patent Document 1).

それ以外には、所定形状の複数の凹凸によるブロック意匠を有するアウトソールと、このアウトソールと同等以上の硬さを有するミッドソールとを備える靴底も知られている(例えば、特許文献2参照)。 Other than that, a sole having an outsole having a block design due to a plurality of irregularities having a predetermined shape and a midsole having a hardness equal to or higher than that of the outsole is also known (see, for example, Patent Document 2). ).

特開2000-106903号公報Japanese Unexamined Patent Publication No. 2000-106903 特開2002-165607号公報Japanese Unexamined Patent Publication No. 2002-165607

しかし、従来の靴底の構造では、先端(爪先部)から後端(踵部)までのアウトソールの肉厚が一定ではなく、特に、踏付け部から踵部にかけて次第に肉厚が増加するため、靴底の各ブロックが均一に加圧されず、耐滑性の効果が不安定となる不都合がある。 However, in the conventional sole structure, the wall thickness of the outsole from the tip (toe part) to the rear end (heel part) is not constant, and in particular, the wall thickness gradually increases from the stepping part to the heel part. , Each block of the sole is not uniformly pressurized, and there is a disadvantage that the effect of slip resistance becomes unstable.

上記の点に鑑み、本発明は、高い耐滑性を安定的に得ることができ、軽量で歩行しやすい安全な作業靴を提供することを目的とする。 In view of the above points, it is an object of the present invention to provide safe work shoes that can stably obtain high slip resistance, are lightweight, and are easy to walk.

かかる目的を達成するために、本発明は、アッパーと、該アッパーの底部に接合されるベース部及び該ベース部の底面に形成されたブロック意匠を有するアウトソールとを備える2色成形によって形成された作業靴において、前記アウトソールは、前記ベース部の肉厚が略全面にわたって均一に形成され、アウトソールのベース部は、アッパーの底部の肉厚と比べて同等或いは薄く形成され、前記アッパー底部の踵部に、中空構造部を備え、前記中空構造部は、上部が開口していると共に、底面上の一部に形成された肉厚部を備えることを特徴とする。 In order to achieve such an object, the present invention is formed by two-color molding comprising an upper and an outsole having a base portion joined to the bottom portion of the upper portion and a block design formed on the bottom surface of the base portion. In the work shoes, the outsole is formed so that the wall thickness of the base portion is uniformly formed over substantially the entire surface , and the base portion of the outsole is formed to be equal to or thinner than the wall thickness of the bottom portion of the upper. The heel portion of the heel portion is provided with a hollow structure portion, and the hollow structure portion is characterized by having an open upper portion and a thick portion formed on a part on the bottom surface .

本発明者は、本出願人による特許第5222431号のつまり防止靴底を用いて更に耐滑性を向上させるために、アッパー、ミッドソール、アウトソールからなる3色成形品と、アッパー、アウトソールからなる2色成形品とで比較試験を行ったところ、次の結果を得た。 The present inventor uses a three-color molded product consisting of an upper, a midsole, and an outsole, and an upper and an outsole in order to further improve slip resistance by using the clogging-preventing sole of Patent No. 5222431 by the present applicant. When a comparative test was conducted with the two-color molded product, the following results were obtained.

即ち、両者の底総肉厚は同寸法であるが、アウトソールの踵部肉厚は、3色成形品が9mmであり、2色成形品が23.5mmである。そして、両者の動摩擦係数を測定したところ、3色成形品は約0.41であり、2色成形品は約0.28であった。 That is, although the total bottom wall thickness of both is the same size, the heel wall thickness of the outsole is 9 mm for the three-color molded product and 23.5 mm for the two-color molded product. Then, when the dynamic friction coefficients of both were measured, it was about 0.41 for the three-color molded product and about 0.28 for the two-color molded product.

このことから、アウトソールの踵部肉厚が23.5mmのものに対して9mmのものが体感耐滑性が良好であり、アウトソールの踵部肉厚が薄いほうが高い耐滑性を得ることができることが知見できた。 From this, the heel thickness of the outsole is 23.5 mm, whereas the heel thickness of 9 mm has better perceived slip resistance, and the thinner heel thickness of the outsole can obtain higher slip resistance. Was found.

本発明は、上記知見に基づくものであり、アウトソールのベース部の肉厚を略全面にわたって均一に形成したことにより、アウトソールの踵部肉厚を容易に薄くすることができ、高い耐滑性が安定して得られる靴底を提供することができる。 The present invention is based on the above findings, and by forming the thickness of the base portion of the outsole uniformly over substantially the entire surface, the thickness of the heel portion of the outsole can be easily reduced, and high slip resistance is achieved. Can provide a sole that can be stably obtained.

ところで、ヒール高さの考えとして、歩行時のヒール部がある程度の高さがあるほうが、重心が前方に移動しやすくなり、楽に前進歩行できる。 By the way, as an idea of the heel height, if the heel portion at the time of walking has a certain height, the center of gravity can be easily moved forward, and the person can easily walk forward.

しかし、ヒール高さが高すぎると、足底が緊張した状態で、足へのストレスが大きく歩行効率が悪化するおそれがある。また、ヒール高さが低すぎると、体重が踵に集中することになり疲労が生じるおそれがある。このように、ヒール高は、体重を足底の各部に分散し、平均化する役目を担っている。そこで、作業靴の歩行のしやすさや疲労軽減、快適性、及び安全性を考慮した足入れとして、作業靴足型における踏付け部~踵部の距離は平均10mm~15mmのヒール公差を設定することが好ましい。 However, if the heel height is too high, the sole of the foot is in a tense state, and the stress on the foot is large, which may deteriorate the walking efficiency. Also, if the heel height is too low, the weight will be concentrated on the heel, which may cause fatigue. In this way, the heel height plays a role of distributing and averaging the weight to each part of the sole. Therefore, a heel tolerance of 10 mm to 15 mm is set on average for the distance between the stepping part and the heel part in the work last type as a footrest in consideration of ease of walking, reduction of fatigue, comfort, and safety of work shoes. Is preferable.

例えば、作業用長靴としてヒール公差を設け且つアウトソールの肉厚を全体均一に薄くさせるにはアッパー底部の踵部の肉厚を厚くしなければならない。しかしながらアッパー底部の踵部を厚くすると、アッパーの射出成形に続いてアウトソールの射出成形を行う順序ではアッパーの冷えが悪く、良好な成形結果が得られない。 For example, in order to provide a heel tolerance as work boots and to reduce the thickness of the outsole uniformly, the thickness of the heel at the bottom of the upper must be increased. However, if the heel portion of the bottom of the upper is thickened, the upper will not cool well in the order of injection molding of the upper and then injection molding of the outsole, and good molding results cannot be obtained.

そこで、本発明においては、中空構造部をアッパー底部の踵部に対応する位置に設けたことにより、ヒール高さを保ちながらアウトソールの肉厚を均一にすることができ、全面均一な加圧が得られることで、耐滑性が向上する。しかも、中空構造部により軽量化できる。 Therefore, in the present invention, by providing the hollow structure portion at a position corresponding to the heel portion of the upper bottom, it is possible to make the wall thickness of the outsole uniform while maintaining the heel height, and the entire surface is uniformly pressurized. Is obtained, and the slip resistance is improved. Moreover, the weight can be reduced by the hollow structure.

更に、前記アッパー底部の前記中空構造部は、前記肉厚部として、該中空構造部の底面から起立する格子状の第1肉厚部と、該第1肉厚部によって区画された内側の底面から突出する格子状の第2肉厚部とを備えることが好ましい。 Further, the hollow structure portion of the upper bottom portion has a lattice-shaped first thick portion rising from the bottom surface of the hollow structure portion and an inner bottom surface partitioned by the first thick portion as the wall thickness portion. It is preferable to provide a grid-like second thick portion protruding from the surface.

作業靴における踵部は、歩行時の接地開始部分であり、しかも、立ち作業時の負荷がかかる部位でもあるため、加圧時に力が加わり過ぎてしまい、肉厚を薄くしすぎると意匠変形が大きくなりすぎて滑りやすくなるおそれがある。 Since the heel part of the work shoes is the part where the ground contact starts when walking and also the part where the load is applied during standing work, too much force is applied during pressurization, and if the wall thickness is made too thin, the design will be deformed. It may become too large and slippery.

そこで、アッパー底部の中空構造部に格子状の第1肉厚部と第2肉厚部とを設けることで、中空構造部の圧縮を規制してブロック意匠の極端な変形を防止することができ、進行方向に対する抵抗力を上げ耐滑性を向上させることができる。 Therefore, by providing the first thick portion and the second thick portion in a grid pattern in the hollow structure portion at the bottom of the upper, it is possible to regulate the compression of the hollow structure portion and prevent the block design from being extremely deformed. , It is possible to increase the resistance to the traveling direction and improve the slip resistance.

本発明の位置実施形態の作業靴の説明的断面図。Explanatory sectional view of the work shoe of the position embodiment of this invention. 本実施形態における中空構造部を示す説明的断面図。Explanatory sectional view which shows the hollow structure part in this embodiment. 本実施形態における中空構造部を示す説明的平面図。Explanatory plan view which shows the hollow structure part in this embodiment.

本発明の一実施形態を図面に基づいて説明する。本実施形態における作業靴1は射出成形によって形成された長靴であり、図1に断面視して示すように、アッパー2とアウトソール3とを備えている。アッパー2とアウトソール3とは2色成形によって形成されている。なお、インソールは、図示を省略しているが、フラット形状のものが用いられる。 An embodiment of the present invention will be described with reference to the drawings. The work shoe 1 in the present embodiment is a boot formed by injection molding, and includes an upper 2 and an outsole 3 as shown in a cross-sectional view in FIG. The upper 2 and the outsole 3 are formed by two-color molding. Although not shown, the insole has a flat shape.

アッパー2は、底部21を備え、底部21の下面にはアウトソール3が設けられている。アウトソール3は、アッパー2の底部21に接合されたベース部31と、ベース部31の下方に形成されたブロック意匠を構成する複数の凸部32とを備えている。 The upper 2 is provided with a bottom portion 21, and an outsole 3 is provided on the lower surface of the bottom portion 21. The outsole 3 includes a base portion 31 joined to the bottom portion 21 of the upper 2, and a plurality of convex portions 32 forming a block design formed below the base portion 31.

このように、本実施形態の作業靴1は、アッパー2の底部21とアウトソール3とで構成される靴底を備えている。 As described above, the work shoe 1 of the present embodiment includes a sole composed of the bottom 21 of the upper 2 and the outsole 3.

アウトソール3のベース部31は、爪先部10から踏付け部11を経て踵部12に至るまでの肉厚が均一に形成されている。更に、アウトソール3のベース部31は、アッパー2の底部21の肉厚と比べて同等或いは薄く形成されている。 The base portion 31 of the outsole 3 has a uniform wall thickness from the toe portion 10 to the heel portion 12 through the tread portion 11. Further, the base portion 31 of the outsole 3 is formed to be equal to or thinner than the wall thickness of the bottom portion 21 of the upper 2.

アッパー2の底部21の踵部12には、図1及び図2に示すように、中空構造部22が形成されてる。図2に示すように、中空構造部22は、その底面から起立する第1肉厚部23と、第1肉厚部23よりも小さく突出する第2肉厚部24とを備えている。 As shown in FIGS. 1 and 2, a hollow structure portion 22 is formed on the heel portion 12 of the bottom portion 21 of the upper 2. As shown in FIG. 2, the hollow structure portion 22 includes a first thick portion 23 that stands up from the bottom surface thereof, and a second thick portion 24 that protrudes smaller than the first thick portion 23.

図3は、図2に示した踵部を平面視した図である。図3に示すように、第1肉厚部23は、中空構造部22を複数の領域に区画する格子状に形成されており、第1肉厚部23によって区画された内側には、第1肉厚部23よりも小さい格子状の第2肉厚部24が形成されている。 FIG. 3 is a plan view of the heel portion shown in FIG. 2. As shown in FIG. 3, the first thick portion 23 is formed in a grid pattern for partitioning the hollow structure portion 22 into a plurality of regions, and the first thick portion 23 is inside the partition divided by the first thick portion 23. A lattice-shaped second thick portion 24 smaller than the thick portion 23 is formed.

以上の構成による作業靴1は、中空構造部22を設けることで、2色成形としてアウトソール3の踵部12の肉厚を薄くできる(例えば9mm)。そして、本実施形態による作業靴1の構成を採用してアウトソール3の踵部12の肉厚を9mmとしたもので動摩擦係数を計測したところ、約0.48と、労働安全衛生総合研究所技術指針JNIOSH-TR-NO.41の安全靴・作業靴技術指針2.2耐滑性における動摩擦係数0.30以上の5区分と最高区分を示し、且つ体感耐滑性が良好であることが確認できた。 By providing the hollow structure portion 22 in the work shoe 1 having the above configuration, the wall thickness of the heel portion 12 of the outsole 3 can be reduced (for example, 9 mm) as a two-color molding. Then, when the dynamic friction coefficient was measured by adopting the configuration of the work shoes 1 according to the present embodiment and setting the wall thickness of the heel portion 12 of the outsole 3 to 9 mm, it was about 0.48, which was the National Institute of Occupational Safety and Health. Technical guideline JNIOSH-TR-NO.41 safety shoes / work shoes Technical guideline 2.2 Shows 5 categories with a dynamic friction coefficient of 0.30 or more in slip resistance and the highest category, and it can be confirmed that the perceived slip resistance is good. rice field.

以上説明した通り、本発明の作業靴1は、アウトソール3のベース部31が爪先部10から踵部12まで肉厚寸法を均一として、全面均一に加圧できるので、耐滑性が向上する。 As described above, in the work shoe 1 of the present invention, the base portion 31 of the outsole 3 can uniformly pressurize the entire surface from the toe portion 10 to the heel portion 12 by making the wall thickness dimension uniform, so that the slip resistance is improved.

更に、アッパー2の底部21の踵部12に中空構造部22を設たので、適度なヒール高さを付与して、且つ、アウトソール3の踵部12の肉厚を薄くすることができ、高い耐滑性を得ることができる。 Further, since the hollow structure portion 22 is provided on the heel portion 12 of the bottom portion 21 of the upper 2, it is possible to impart an appropriate heel height and reduce the wall thickness of the heel portion 12 of the outsole 3. High slip resistance can be obtained.

また、アッパー2の底部21の中空構造部22に格子状の第1肉厚部23及び第2肉厚部24を設けたことにより、アウトソール3の凸部32によるブロック意匠の極度の変形を防止することができ、進行方向に対する抵抗力を上げることができて耐滑性が向上する。 Further, by providing the first thick portion 23 and the second thick portion 24 in a grid pattern in the hollow structure portion 22 of the bottom portion 21 of the upper 2, the convex portion 32 of the outsole 3 can cause extreme deformation of the block design. It can be prevented, the resistance to the traveling direction can be increased, and the slip resistance is improved.

更に、アッパー2の底部21の中空構造部22によって、靴底が軽量化され、より快適な歩行を行うことができる。 Further, the hollow structure portion 22 of the bottom portion 21 of the upper 2 reduces the weight of the shoe sole, enabling more comfortable walking.

なお、本実施形態においては、作業靴1として、作業用長靴を挙げて説明したが、アッパーの底部21以外の形状はこれに限らない。 In the present embodiment, the work boots 1 have been described as the work boots 1, but the shape other than the bottom 21 of the upper is not limited to this.

1…作業靴、12…踵部、2…アッパー、21…アッパー底部、22…中空構造部、23…第1肉厚部、24…第2肉厚部、3…アウトソール、32…凸部(ブロック意匠)。
1 ... work shoes, 12 ... heel, 2 ... upper, 21 ... upper bottom, 22 ... hollow structure, 23 ... first thick part, 24 ... second thick part, 3 ... outsole, 32 ... convex part (Block design).

Claims (2)

アッパーと、該アッパーの底部に接合されるベース部及び該ベース部の底面に形成されたブロック意匠を有するアウトソールとを備える2色成形によって形成された作業靴において、
前記アウトソールは、前記ベース部の肉厚が略全面にわたって均一に形成され
アウトソールのベース部は、アッパーの底部の肉厚と比べて同等或いは薄く形成され、
前記アッパー底部の踵部に、中空構造部を備え、
前記中空構造部は、上部が開口していると共に、底面上の一部に形成された肉厚部を備えることを特徴とする作業靴。
In a work shoe formed by two-color molding comprising an upper and a base portion joined to the bottom portion of the upper portion and an outsole having a block design formed on the bottom surface of the base portion.
In the outsole, the wall thickness of the base portion is uniformly formed over substantially the entire surface .
The base of the outsole is formed to be equal to or thinner than the wall thickness of the bottom of the upper.
A hollow structure is provided on the heel of the bottom of the upper.
The hollow structure portion is a work shoe characterized by having an open upper portion and a thick portion formed on a part on the bottom surface .
前記アッパー底部の前記中空構造部は、前記肉厚部として、該中空構造部の底面から起立する格子状の第1肉厚部と、該第1肉厚部によって区画された内側の底面から突出する格子状の第2肉厚部とを備えることを特徴とする請求項1記載の作業靴。 The hollow structure portion of the upper bottom portion protrudes from a lattice-shaped first thick portion rising from the bottom surface of the hollow structure portion and an inner bottom surface partitioned by the first thick portion as the wall thickness portion. The work shoe according to claim 1, further comprising a grid-like second thick portion .
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KR1020237030877A KR20230146568A (en) 2021-07-16 2022-07-04 work shoes
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JP2002238601A (en) 2001-02-22 2002-08-27 Rikio:Kk Jikatabi (rubber-soled socks)
JP2004160064A (en) 2002-11-15 2004-06-10 Shimano Inc Fishing boots
JP2005288159A (en) 2004-03-12 2005-10-20 Midori Anzen Co Ltd Antislip shoe sole
JP2009247439A (en) 2008-04-02 2009-10-29 Shimano Inc Fishing boot

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JPS2711252Y1 (en) * 1951-11-09 1952-11-09
JPS5844907U (en) * 1981-09-19 1983-03-25 株式会社アサヒコーポレーション Shoe sole
JP2814218B2 (en) * 1996-01-12 1998-10-22 ミドリ安全株式会社 Safety basement tabi and its manufacturing method
JP3451205B2 (en) 1998-10-05 2003-09-29 ミドリ安全株式会社 Slip-resistant soles
JP3553041B2 (en) 2001-11-21 2004-08-11 ミドリ安全株式会社 Slip-resistant soles
JP5312962B2 (en) * 2009-01-19 2013-10-09 株式会社シマノ Fishing footwear

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Publication number Priority date Publication date Assignee Title
JP2002238601A (en) 2001-02-22 2002-08-27 Rikio:Kk Jikatabi (rubber-soled socks)
JP2004160064A (en) 2002-11-15 2004-06-10 Shimano Inc Fishing boots
JP2005288159A (en) 2004-03-12 2005-10-20 Midori Anzen Co Ltd Antislip shoe sole
JP2009247439A (en) 2008-04-02 2009-10-29 Shimano Inc Fishing boot

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