WO2016047154A1 - Synthetic resin work shoe with toe box - Google Patents
Synthetic resin work shoe with toe box Download PDFInfo
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- WO2016047154A1 WO2016047154A1 PCT/JP2015/051307 JP2015051307W WO2016047154A1 WO 2016047154 A1 WO2016047154 A1 WO 2016047154A1 JP 2015051307 W JP2015051307 W JP 2015051307W WO 2016047154 A1 WO2016047154 A1 WO 2016047154A1
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- tip
- synthetic resin
- toe
- shoe
- work shoe
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/12—Sandals; Strap guides thereon
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/08—Heel stiffeners; Toe stiffeners
- A43B23/16—Heel stiffeners; Toe stiffeners made of impregnated fabrics, plastics or the like
- A43B23/17—Heel stiffeners; Toe stiffeners made of impregnated fabrics, plastics or the like made of plastics
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/32—Footwear with health or hygienic arrangements with shock-absorbing means
Definitions
- the present invention relates to a lightweight work shoe, and more particularly, to a synthetic resin work shoe having a tip which is integrally formed with a synthetic resin from a sole part to an upper part.
- a cloth-like body called a front and back disposed on the rear edge portion of the front core or the inner surface of the front core is the inner wall of the upper member. It protrudes slightly into the space inside the shoe, and this protruding portion may come into contact with the tip of the foot or the instep of the foot, affecting the comfort.
- the present invention has been made in view of these points, and an object of the present invention is to provide a work shoe made of synthetic resin that is lightweight, inexpensive, and comfortable to wear.
- the present invention described in claim 1 is a work shoe in which a sole portion to an upper portion are integrally formed of a synthetic resin material, and a horseshoe-shaped concave portion is formed on an inner toe portion of the sole portion.
- a groove is formed, and an inner surface portion of a toe portion of the upper portion is formed into a recess to form a tip core housing portion, and a resin tip is bonded and fixed to the tip core housing portion.
- a horseshoe-shaped concave groove is formed in the inner toe portion of the sole portion, and the inner portion of the upper portion of the upper portion is recessed to form the tip core accommodating portion, and the synthetic resin from the sole portion to the upper portion is formed. Since the tip made of resin is bonded and fixed to the tip lead housing part of the molded footwear molded integrally with the material, the die is held to hold the tip like a case where the tip is cast with resin. It is not necessary to form it in a special shape, and since the attached tip is housed in the thick part of the footwear, the tip end opening of the tip no longer protrudes into the footwear space. Comfortable work shoes can be provided.
- FIG. 1 is a longitudinal sectional view of a work shoe showing an embodiment of the present invention.
- the work shoe (1) includes an upper part (2) that covers the instep part of the foot and a sole part that protects the sole part ( 3) is a shoe type in which a resin tip (4) is assembled to a toe portion of a molded footwear (shoe mold) integrally formed with EVA (ethylene vinyl acetate copolymer) resin.
- EVA ethylene vinyl acetate copolymer
- a synthetic rubber bottom rubber (5) having an electrostatic function and a no-marking function is cast on the ground contact surface of the sole portion (3) in an integral manner when forming a footwear molding.
- the heel side portion of 5) is configured such that a part thereof is exposed to the internal space of the molded footwear. Thereby, static electricity charged in the body is easily grounded.
- the bottom rubber (5) is improved in slip resistance by a tread pattern formed on the ground contact surface.
- the tip core (4) assembled on the toe side of the molded footwear is made of a material obtained by impregnating a reinforcing fiber such as glass fiber or carbon fiber with a resin such as polyamide or polycarbonate.
- the toe side of the footwear molded body has a horseshoe-shaped groove (6) that is recessed in the sole toe side inside the footwear molded body, and the rising side wall and upper surface of the footwear molded body.
- the tip core accommodating portion (8) is formed by the concave portion (7) formed in the inner surface of the cover portion, and the tip core (4) coated with an adhesive is inserted and fixed to the tip core accommodating portion (8). It is like that.
- the rear end edge portion of the tip core (4) is located within the recessed dimension of the tip core receiving portion (8) and does not protrude into the internal space of the footwear molding. For this reason, even if the tip core (4) is not covered, the foot tip does not come into contact with the end edge portion of the tip core (4), and it is possible to obtain a good comfort without feeling uncomfortable.
- FIG. 4 is a longitudinal cross-sectional view of a work shoe showing another embodiment of the present invention, which is an upper part (2) that forms a footwear molded body (shoe mold) in a sandal tie and covers the upper part of the foot. )
- a back strap (9) is rotatably fixed to a portion near the rear end. Also in this case, the tip 4 is inserted and bonded to the toe portion with the same structure as described above.
- the work shoes having the above-described configuration are tested for slip resistance, impact test, compression test, antistatic performance test in accordance with JIS T 8101: 2006 safety shoe test and JIS T 8103: 2010 antistatic shoe test. Went.
- the work shoes according to the present invention are suitable as work shoes for workers engaged in interior work / driver / medical work.
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The purpose of the present invention is to provide a synthetic resin work shoe with a toe box, which is lightweight, inexpensive, and comfortable to wear. Provided is a work shoe which is formed as a unit from the sole part to the upper part with a synthetic resin, wherein: a horseshoe-shaped trough (6) is formed in the inner-face toe part of the sole part (3); the inner-face portion of the toe part of the upper part (2) is formed as a depression and is treated as a toe box housing part (8); and a toe box (4) made from a resin is anchored to the toe box housing part (8) using an adhesive.
Description
本発明は、軽量の作業靴に関し、特にソール部分からアッパー部分までを合成樹脂で一体形成した先芯の入った合成樹脂製作業靴に関する。
The present invention relates to a lightweight work shoe, and more particularly, to a synthetic resin work shoe having a tip which is integrally formed with a synthetic resin from a sole part to an upper part.
従来から、先芯を挿入した作業靴は多数提案されている。従来の先芯入り作業靴は、ソール部分とアッパー部分とが別体に形成され、アッパー部分とソール部分とを縫合あるいは接着で結合していた。このような作業靴として、例えば、アッパー体を構成する甲革の内側に、織布や編布、不織布などの布状体を設け、この布状体と甲革と間に足先保護用の先芯を装着し、ソール部分を形成する際に、充填樹脂を布状体と先芯との間に注入して樹脂層を形成するものが提案されている。(特許文献１)
Conventionally, many work shoes with tip inserts have been proposed. In conventional work shoes with a toe-point, the sole portion and the upper portion are formed separately, and the upper portion and the sole portion are joined together by stitching or adhesion. As such work shoes, for example, a cloth-like body such as a woven fabric, a knitted fabric, or a non-woven fabric is provided on the inner side of the upper portion constituting the upper body, and for protecting the toes between the cloth-like body and the upper portion. There has been proposed a method in which a resin layer is formed by injecting a filling resin between a cloth-like body and a tip when the tip is attached and the sole portion is formed. (Patent Document 1)
前記特許文献１に開示されているものを含め、従来の先芯入りの作業靴では、先芯の後端縁部分や先芯の内面に配置した先裏と称する布状体がアッパー部材の内壁から靴内の空間に僅かに突出する状態となり、この突出部分が足先や足の甲部分と接触して、履き心地に影響を及ぼすことがあった。
In conventional work shoes with a front core including those disclosed in Patent Document 1, a cloth-like body called a front and back disposed on the rear edge portion of the front core or the inner surface of the front core is the inner wall of the upper member. It protrudes slightly into the space inside the shoe, and this protruding portion may come into contact with the tip of the foot or the instep of the foot, affecting the comfort.
また、近年作業環境に合わせて、ソール部分からアッパー部分までを合成樹脂で一体成形した作業靴も提供されているが、この場合は、靴先部分に先芯を鋳込むことになり、靴成型金型内に、先芯を浮かした状態で保持しなければならないことから、成型金型が複雑化し、コストアップにつながるという問題がある。
In recent years, there are also working shoes that are integrally molded from the sole part to the upper part with synthetic resin according to the work environment. In this case, the tip of the shoe is cast into the shoe tip part. Since the tip must be held in the mold in a floating state, there is a problem that the molding mold becomes complicated and leads to an increase in cost.
本発明は、このような点に鑑み、本発明は、軽量・安価で、履き心地のよい先芯入りの合成樹脂製作業靴を提供することを目的とする。
The present invention has been made in view of these points, and an object of the present invention is to provide a work shoe made of synthetic resin that is lightweight, inexpensive, and comfortable to wear.
上述の目的を達成するために、請求項１に記載した本発明は、ソール部からアッパー部までを合成樹脂材で一体に形成した作業靴であって、ソール部の内面爪先部に馬蹄形の凹溝を形成するとともに、アッパー部の爪先部の内面部分を凹陥形成して先芯収容部とし、この先芯収容部に樹脂製先芯を接着固定したことを特徴としている。
In order to achieve the above object, the present invention described in claim 1 is a work shoe in which a sole portion to an upper portion are integrally formed of a synthetic resin material, and a horseshoe-shaped concave portion is formed on an inner toe portion of the sole portion. A groove is formed, and an inner surface portion of a toe portion of the upper portion is formed into a recess to form a tip core housing portion, and a resin tip is bonded and fixed to the tip core housing portion.
本発明では、ソール部の内面爪先部に馬蹄形の凹溝を形成するとともに、アッパー部の先部の内面部分を凹陥形成して先芯収容部を形成し、ソール部からアッパー部までを合成樹脂材で一体成型された履物成型体での前記先芯収容部に、樹脂製の先芯を接着固定してあることから、先芯を樹脂で鋳包むもののように金型を先芯保持のために特殊な形状に形成しなくてもよく、また、装着した先芯が、履物の肉厚部内に収容されることから、先芯開口端が履物内空間内に突出することがなくなって、履き心地のよい作業靴を提供することができる。
In the present invention, a horseshoe-shaped concave groove is formed in the inner toe portion of the sole portion, and the inner portion of the upper portion of the upper portion is recessed to form the tip core accommodating portion, and the synthetic resin from the sole portion to the upper portion is formed. Since the tip made of resin is bonded and fixed to the tip lead housing part of the molded footwear molded integrally with the material, the die is held to hold the tip like a case where the tip is cast with resin. It is not necessary to form it in a special shape, and since the attached tip is housed in the thick part of the footwear, the tip end opening of the tip no longer protrudes into the footwear space. Comfortable work shoes can be provided.
図１は本発明の一実施形態を示す作業靴の縦断面図であり、この作業靴(１)は、足の甲部分を覆うアッパー部(２)と、足裏部分を保護するソール部分(３)とをＥＶＡ(エチレン酢酸ビニル共重合体)樹脂で一体に形成した履物成型体(靴型)の爪先部分に樹脂製の先芯(４)を組付けたシューズタイプのものである。
FIG. 1 is a longitudinal sectional view of a work shoe showing an embodiment of the present invention. The work shoe (1) includes an upper part (2) that covers the instep part of the foot and a sole part that protects the sole part ( 3) is a shoe type in which a resin tip (4) is assembled to a toe portion of a molded footwear (shoe mold) integrally formed with EVA (ethylene vinyl acetate copolymer) resin.
ソール部分(３)の接地面には、静電機能とノーマーキング機能とを具備する合成ゴム製の底ゴム(５)が履物成型体形成時に不離一体に鋳込まれており、この底ゴム(５)の踵側部分は、その一部が履物成型体の内部空間に露出するように構成されている。これにより、体内に帯電している静電気が容易にアースされることになる。そして、この底ゴム(５)はその接地面に形成されたトレッドパターンによって耐滑性能を向上させている。
A synthetic rubber bottom rubber (5) having an electrostatic function and a no-marking function is cast on the ground contact surface of the sole portion (3) in an integral manner when forming a footwear molding. The heel side portion of 5) is configured such that a part thereof is exposed to the internal space of the molded footwear. Thereby, static electricity charged in the body is easily grounded. The bottom rubber (5) is improved in slip resistance by a tread pattern formed on the ground contact surface.
履物成型体の爪先側に組み付けた先芯(４)は、ガラス繊維やカーボン繊維などの強化繊維にポリアミドやポリカーボネ－トなどの樹脂を含浸させた材料で形成したものである。
The tip core (4) assembled on the toe side of the molded footwear is made of a material obtained by impregnating a reinforcing fiber such as glass fiber or carbon fiber with a resin such as polyamide or polycarbonate.
履物成型体の爪先側は図２及び図３に示すように、履物成型体の内部でのソール部爪先側に凹陥形成された馬蹄形の凹溝(６)と、履物成型体の立ち上がり側壁及び上面覆い部の内面に凹陥形成した凹陥部(７)とで先芯収容部(８)が形成され、この先芯収容部(８)に接着剤を塗布した先芯(４)を挿入して固定するようにしてある。
As shown in FIGS. 2 and 3, the toe side of the footwear molded body has a horseshoe-shaped groove (6) that is recessed in the sole toe side inside the footwear molded body, and the rising side wall and upper surface of the footwear molded body. The tip core accommodating portion (8) is formed by the concave portion (7) formed in the inner surface of the cover portion, and the tip core (4) coated with an adhesive is inserted and fixed to the tip core accommodating portion (8). It is like that.
このとき、先芯(４)の後端縁部は、先芯収容部(８)の凹み寸法内に位置して、履物成型体の内部空間には突出しない。このため、先芯(４)を覆わなくても足先が先芯(４)の端縁部に当接することがなく、違和感のない良好な履き心地を得ることができる。
At this time, the rear end edge portion of the tip core (4) is located within the recessed dimension of the tip core receiving portion (8) and does not protrude into the internal space of the footwear molding. For this reason, even if the tip core (4) is not covered, the foot tip does not come into contact with the end edge portion of the tip core (4), and it is possible to obtain a good comfort without feeling uncomfortable.
図４は、本発明の別の実施形態を示す作業靴の縦断面図であり、これは、履物成型体(靴型)をサンダルタイブに形成するとともに、足の甲部分を覆うアッパー部(２)の後端寄り部にバックストラップ(９)を回動自在に止め付けたものである。この場合も、爪先部には先芯(４)が前述のものと同じ構造で挿入接着してある。
FIG. 4 is a longitudinal cross-sectional view of a work shoe showing another embodiment of the present invention, which is an upper part (2) that forms a footwear molded body (shoe mold) in a sandal tie and covers the upper part of the foot. ) A back strap (9) is rotatably fixed to a portion near the rear end. Also in this case, the tip 4 is inserted and bonded to the toe portion with the same structure as described above.
なお、上記両実施態様では、履物成型体の内部に中敷を装着することについての言及はないが、中敷の使用を排除するものではない。
In both of the above embodiments, there is no mention of mounting an insole inside the molded footwear, but it does not exclude the use of the insole.
前記した構成からなる作業靴を、ＪＩＳ Ｔ ８１０１：２００６の安全靴に関する試験及びＪＩＳ Ｔ ８１０３：２０１０の静電気帯電防止靴に関する試験に準拠して、耐滑試験、衝撃試験、圧迫試験、帯電防止性能試験を行った。
The work shoes having the above-described configuration are tested for slip resistance, impact test, compression test, antistatic performance test in accordance with JIS T 8101: 2006 safety shoe test and JIS T 8103: 2010 antistatic shoe test. Went.
耐滑試験では、５回測定した動摩擦係数の平均値が０.３２であった。衝撃試験では、２０ｋｇの重錘を６０ｃｍの高さから先芯部分に落下させた結果、先芯部分に光を通すような割れは認められなかった。圧迫試験では、先芯部分に１０ｋＮの圧迫力を作用させた結果、先芯部分に光を通すような割れは認められなかった。また、帯電防止性能試験では、温度０±２℃の環境下での１５秒値では７.２×１０７Ω、１分値では７.５×１０７Ω、湿度５０±５％、温度２３±２℃の環境下での１５秒値では１.２×１０７Ω、１分値では１.５×１０７Ωであった。したがって、本発明にかかる作業靴は安全靴・静電気帯電防止靴としての基準をクリアしている。
In the slip resistance test, the average value of the dynamic friction coefficients measured five times was 0.32. In the impact test, as a result of dropping a 20 kg weight from a height of 60 cm onto the tip portion, no cracks that allowed light to pass through the tip portion were found. In the compression test, as a result of applying a compression force of 10 kN to the tip portion, no cracks that allow light to pass through the tip portion were observed. In the antistatic performance test, 7.2 × 10 7 Ω for a 15 second value in an environment with a temperature of 0 ± 2 ° C., 7.5 × 10 7 Ω for a 1 minute value, 50 ± 5% humidity, and a temperature of 23 The value for 15 seconds under an environment of ± 2 ° C. was 1.2 × 10 7 Ω, and the value for 1 minute was 1.5 × 10 7 Ω. Therefore, the work shoes according to the present invention have cleared the standards for safety shoes and antistatic shoes.
本発明に係る作業靴は、内装作業・ドライバー・医療関係の作業に従事する作業者の作業靴として好適である。
The work shoes according to the present invention are suitable as work shoes for workers engaged in interior work / driver / medical work.
１…作業靴、２…アッパー部、３…ソール部、４…樹脂製先芯、６…凹溝、８…先芯収容部。
DESCRIPTION OF SYMBOLS 1 ... Work shoes, 2 ... Upper part, 3 ... Sole part, 4 ... Resin tip, 6 ... Concave groove, 8 ... Tip tip accommodating part.
Claims (3)
- ソール部(３)からアッパー部(２)までを合成樹脂材で一体に形成した作業靴(１)であって、
ソール部(３)の内面爪先部に馬蹄形の凹溝(６)を形成するとともに、アッパー部(２)の爪先部の内面部分を凹陥形成して先芯収容部(８)とし、この先芯収容部(８)に樹脂製先芯(４)を接着固定したことを特徴とする先芯入り合成樹脂製作業靴。 A work shoe (1) integrally formed of a synthetic resin material from a sole part (3) to an upper part (2),
A horseshoe-shaped concave groove (6) is formed in the inner toe portion of the sole portion (3), and an inner surface portion of the toe portion of the upper portion (2) is formed into a recess to form a tip core housing portion (8). A synthetic resin work shoe with a tip to which a resin tip (4) is bonded and fixed to the portion (8). - 作業靴(１)がシューズタイプである請求項１に記載の先芯入り合成樹脂作業靴。 The work shoe (1) is a shoe type.
- 作業靴(２)が、サンダルタイプである請求項１に記載の先芯入り合成樹脂作業靴。 The work shoe (2) is a sandal type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201580000032.4A CN105636472A (en) | 2014-09-24 | 2015-01-20 | Synthetic resin work shoe with toe box |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-193299 | 2014-09-24 | ||
| JP2014193299A JP2016063891A (en) | 2014-09-24 | 2014-09-24 | Work shoe made of synthetic resin containing toe core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016047154A1 true WO2016047154A1 (en) | 2016-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/JP2015/051307 WO2016047154A1 (en) | 2014-09-24 | 2015-01-20 | Synthetic resin work shoe with toe box |
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| JP (1) | JP2016063891A (en) |
| CN (1) | CN105636472A (en) |
| WO (1) | WO2016047154A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2967190A4 (en) * | 2013-03-13 | 2016-11-16 | Tbl Licensing Llc | Safety footwear |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6393813B1 (en) * | 2017-09-19 | 2018-09-19 | 株式会社レーベン販売 | shoes |
| JP2019188635A (en) * | 2018-04-19 | 2019-10-31 | アキレス株式会社 | Safety shoes |
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| JPS5255917U (en) * | 1975-10-16 | 1977-04-22 | ||
| JPH09304A (en) * | 1995-06-16 | 1997-01-07 | Midori Anzen Co Ltd | Safety shoes |
| JP4046321B2 (en) * | 2002-05-22 | 2008-02-13 | アキレス株式会社 | Manufacturing method of safety boots |
| JP4756424B2 (en) * | 2009-10-23 | 2011-08-24 | ミドリ安全株式会社 | Toe core and safety shoes |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201911408U (en) * | 2010-12-21 | 2011-08-03 | 双驰实业股份有限公司 | Shoes with high cushioning functions |
| CN202122171U (en) * | 2011-06-30 | 2012-01-25 | 王明喜 | Boots used in mine |
| GB201302264D0 (en) * | 2013-02-08 | 2013-03-27 | Kanyon Outdoor Llp | Footwear |
| KR101343107B1 (en) * | 2013-08-07 | 2013-12-20 | 화인케미칼 주식회사 | Foamed type lightweight safety shoes |
-
2014
- 2014-09-24 JP JP2014193299A patent/JP2016063891A/en active Pending
-
2015
- 2015-01-20 CN CN201580000032.4A patent/CN105636472A/en active Pending
- 2015-01-20 WO PCT/JP2015/051307 patent/WO2016047154A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5255917U (en) * | 1975-10-16 | 1977-04-22 | ||
| JPH09304A (en) * | 1995-06-16 | 1997-01-07 | Midori Anzen Co Ltd | Safety shoes |
| JP4046321B2 (en) * | 2002-05-22 | 2008-02-13 | アキレス株式会社 | Manufacturing method of safety boots |
| JP4756424B2 (en) * | 2009-10-23 | 2011-08-24 | ミドリ安全株式会社 | Toe core and safety shoes |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2967190A4 (en) * | 2013-03-13 | 2016-11-16 | Tbl Licensing Llc | Safety footwear |
| US9635902B2 (en) | 2013-03-13 | 2017-05-02 | Tbl Licensing Llc | Safety footwear |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016063891A (en) | 2016-04-28 |
| CN105636472A (en) | 2016-06-01 |
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