JP3193096B2 - Safety shoe tip core - Google Patents
Safety shoe tip coreInfo
- Publication number
- JP3193096B2 JP3193096B2 JP03771892A JP3771892A JP3193096B2 JP 3193096 B2 JP3193096 B2 JP 3193096B2 JP 03771892 A JP03771892 A JP 03771892A JP 3771892 A JP3771892 A JP 3771892A JP 3193096 B2 JP3193096 B2 JP 3193096B2
- Authority
- JP
- Japan
- Prior art keywords
- safety shoe
- thermoplastic resin
- core
- shoe tip
- resin sheets
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、一方向に揃えた長繊維
を含有する複数の熱可塑性樹脂シートを、多方向に重層
し、これを加熱加圧して一体的に構成した多方向性強化
樹脂シートを用いた安全靴用先芯に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-directional reinforced structure in which a plurality of thermoplastic resin sheets containing long fibers aligned in one direction are laminated in multiple directions, and these are integrally formed by heating and pressing. The present invention relates to a safety shoe tip using a resin sheet.
【0002】[0002]
【従来の技術】従来、安全靴の先芯は、靴のつま先部に
装着することにより、圧迫および衝撃に対して着用者の
つま先を保護するものであって、日本工業規格の革製安
全靴(JIS T8101)には、重作業用(H種)お
よび普通作業用(S種)としては鋼(SK7)またはこ
れ以上の強さをもつ金属材料と規定されているが、軽作
業用(L種)としては金属材料またはプラスチック材料
を用いることが規定されている。従って、鋼以外の金属
材料またはプラスチック材料を用いてその軽量化とコス
トの低減化を計る軽作業用安全靴の実現が考慮されてい
た。2. Description of the Related Art Conventionally, the tip of a safety shoe has been mounted on the toe of the shoe to protect the toe of the wearer against compression and impact. According to (JIS T8101), steel (SK7) or a metal material having a higher strength is specified for heavy work (class H) and normal work (class S), but for light work (L). It is specified that a metal material or a plastic material be used as the (species). Therefore, the realization of a light-duty safety shoe using a metal material or a plastic material other than steel to reduce its weight and cost has been considered.
【0003】[0003]
【発明が解決しようとする課題】ところで、鋼以外の金
属材料として、例えばアルミニウム等の非鉄金属材料と
すれば、同等の肉厚の場合には約1/3程度に軽量化す
ることは可能であるが、強度が鋼材料に比べて低下する
ために肉厚を増加しなければならない。従って、実用化
が困難であった。By the way, if a non-ferrous metal material such as aluminum is used as the metal material other than steel, it is possible to reduce the weight by about 1/3 in the case of the same thickness. However, since the strength is lower than that of steel material, the wall thickness must be increased. Therefore, practical application has been difficult.
【0004】しかし、樹脂化することにより同等の肉厚
の場合には約1/4〜1/5程度に軽量化が可能で、強
度的にはガラス繊維等を含有する強化プラスチックとす
れば、アルミニウムの約2倍程度の引張り強度が得られ
るが、前記軽作業用(L種)の圧迫試験条件450Kgf
を充分に満足する成果が得られていなかった。[0004] However, if the resin is made of resin, the weight can be reduced to about 1/4 to 1/5 in the case of the same thickness. A tensile strength about twice that of aluminum can be obtained, but the compression test conditions for the light work (class L) 450 kgf
Have not been obtained.
【0005】本発明の目的は、上記問題点を改善するた
めに、先芯の軽量化と共に、強度条件が充分満足され、
過度の衝撃に耐え、量産が可能な安全靴用先芯を提供す
ることである。[0005] An object of the present invention is to solve the above problems by reducing the weight of the leading core and sufficiently satisfying the strength conditions.
It is an object of the present invention to provide a safety shoe tip that can withstand excessive impact and that can be mass-produced.
【0006】[0006]
【課題を解決するための手段】前述のごとき問題に鑑み
て、本発明は、一方向に揃えた長繊維を含有し薄シート
状に形成された複数の熱可塑性樹脂シートを多方向に重
層し、かつ加熱加圧して一体的に構成した多方向性強化
樹脂シートよりなる安全靴用先芯において、前記複数の
熱可塑性樹脂シートは硬度の異なる異種材料を組合せて
外側を硬質化し、その内側を軟質化した構成である。SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a method of laminating a plurality of thermoplastic resin sheets formed into a thin sheet containing long fibers aligned in one direction in multiple directions. In a safety shoe tip made of a multi-directional reinforced resin sheet integrally formed by heating and pressing, the plurality of thermoplastic resin sheets are made of a combination of different materials having different hardnesses to harden the outside, and form the inside thereof. It is a softened configuration.
【0007】[0007]
【実施例】以下、本発明の実施例を図面に基づいて、詳
細に説明する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【0008】図1は安全靴用先芯の概略構成図、図2は
図1の一部拡大図を示す。先芯1は一方向に揃えた長繊
維3を含有する複数の熱可塑性樹脂シートを、多方向に
重層して一体的に構成された多方向性強化樹脂シート5
を用いて加熱加圧成形してなるものである。FIG. 1 is a schematic structural view of a tip for a safety shoe, and FIG. 2 is a partially enlarged view of FIG. The leading core 1 is a multidirectional reinforced resin sheet 5 integrally formed by layering a plurality of thermoplastic resin sheets containing long fibers 3 aligned in one direction in multiple directions.
And formed by heating and pressing.
【0009】この多方向性強化樹脂シート5は、熱可塑
性樹脂としてナイロン、ポリプロピレン(PP)、ポリ
エチレンテレフタレート(PET)、ポリカーボネート
(PC)等に、長繊維材3としてグラスファイバ、カー
ボンファイバ、アラミドファイバ、セラミックファイバ
等が一方向に揃え並べられ含有されて薄シートを形成
し、この薄シートを縦横斜め方向に、約5枚ないし15
枚程度重層することによって、肉厚約1mmないし3mm程
度の多方向性を有する一体的な強化樹脂シートを構成す
るものである。The multidirectional reinforced resin sheet 5 is made of a thermoplastic resin such as nylon, polypropylene (PP), polyethylene terephthalate (PET), polycarbonate (PC) and the like, and a glass fiber, carbon fiber, aramid fiber as the long fiber material 3. , Ceramic fibers and the like are arranged and contained in one direction to form a thin sheet.
By stacking about one sheet, an integrated reinforced resin sheet having a thickness of about 1 mm to 3 mm and multidirectionality is formed.
【0010】このように構成された多方向性強化樹脂シ
ート5を、図示されていない成形機によって頭部7を高
く円弧状に、底部9を折曲げ成形することにより、先芯
1が形成される。このような先芯1の強度は数多くの実
験の結果、厚さ2mm以下においても500Kgf 以上の圧
迫試験強度に耐え得るものであることが明らかとなっ
た。[0010] The multi-directional reinforced resin sheet 5 thus configured is formed by bending the bottom 9 with the head 7 in a high arc shape by a molding machine (not shown), whereby the leading core 1 is formed. You. As a result of a number of experiments, it has been clarified that the strength of the leading core 1 can withstand a compression test strength of 500 kgf or more even with a thickness of 2 mm or less.
【0011】また、本実施例における熱可塑性樹脂材料
を硬度の異なる異種材として組合せ、例えば長繊維3を
含有する複数の熱可塑性樹脂シートを多方向に重層し一
体的な硬質層と軟質層とを構成することにより、先芯1
の外側を硬質化することによる強度の向上と共に、内側
を軟質化することによる足当りのよいクッション性を具
備することができる。また、硬質層の間に軟質層をサン
ドイッチ状に一体的に構成し、過度の衝撃による硬質層
の粉砕から軟質層が先芯1を保護することも容易であ
る。Further, the thermoplastic resin materials of this embodiment are combined as different materials having different hardnesses. For example, a plurality of thermoplastic resin sheets containing the long fibers 3 are multi-layered to form an integral hard layer and a soft layer. By constructing the
It is possible to improve the strength by hardening the outer side of the tire and to provide good cushioning properties by softening the inner side. Further, the soft layer is integrally formed in a sandwich shape between the hard layers, and it is easy for the soft layer to protect the leading core 1 from pulverization of the hard layer due to excessive impact.
【0012】上述のごとき安全靴用先芯は、一方向に揃
えた長繊維を含有し薄シート状に形成され硬度の異なる
異種材料からなる複数の熱可塑性樹脂シートを多方向に
重層した後に加熱加圧して硬質層と軟質層とを有する多
方向性強化樹脂シートを一体的に構成し、そして、頭部
を高く円弧状に底部を折曲げ外側を硬質層に内側を軟質
層に成形することによって製造され得るものである。The above-mentioned core for safety shoes as described above is formed by laminating a plurality of thermoplastic resin sheets made of dissimilar materials having different hardnesses, containing long fibers aligned in one direction and having different hardnesses, and then heating them. A multi-directional reinforced resin sheet having a hard layer and a soft layer is integrally formed by applying pressure, and the bottom is bent in an arc shape with a high head, the outside is formed into a hard layer, and the inside is formed into a soft layer. It can be manufactured by:
【0013】以上のように本発明は、充分実用上の使用
に適する軽作業用安全靴であって、軽量化されると共
に、金属材料に比べて足当りが柔らかく、腐蝕して錆等
が発生することなく、非磁性で、絶縁性がよく、また強
度を向上のために任意の形状を選択することも容易であ
る。As described above, the present invention is a safety shoe for light work which is suitable for practical use and is light in weight, has a softer foot contact than metal materials, and is corroded to generate rust. It is non-magnetic, has good insulating properties, and can easily select an arbitrary shape for improving strength.
【0014】[0014]
【発明の効果】以上のごとき実施例の説明より理解され
るように、要するに本発明は、一方向に揃えた長繊維を
含有し薄シート状に形成された複数の熱可塑性樹脂シー
トを多方向に重層し、かつ加熱加圧して一体的に構成し
た多方向性強化樹脂シートよりなる安全靴用先芯におい
て、前記複数の熱可塑性樹脂シートは硬度の異なる異種
材料を組合わせて外側を硬質化し、その内側を軟質化し
た構成である。As will be understood from the above description of the embodiments, in short, the present invention relates to a method of forming a plurality of thermoplastic resin sheets formed into a thin sheet containing long fibers aligned in one direction in a multi-directional manner. In a safety shoe core made of a multidirectional reinforced resin sheet integrally formed by heating and pressurizing, the plurality of thermoplastic resin sheets are hardened on the outside by combining different materials having different hardnesses. , The inside of which is softened.
【0015】上記構成より明らかなように、本発明にお
いては、安全靴用先芯を、一方向に揃えた長繊維を含有
した複数の熱可塑性樹脂シートを多方向に重層しかつ加
熱加圧して一体的に構成した多方向性強化樹脂シートに
より構成してあるので、強度向上及び軽量化を図ること
ができることは勿論のこと、前記熱可塑性樹脂シートは
硬度の異なる異種材料を組合せてあって外側を硬質化し
内側を軟質化してあるから、足当りのよいクッション性
を有することとなり、着用時の疲労を軽減できるもので
ある。As is apparent from the above configuration, in the present invention, the tip for safety shoes is formed by laminating a plurality of thermoplastic resin sheets containing long fibers aligned in one direction in multiple directions and applying heat and pressure. Since it is composed of an integrally formed multidirectional reinforced resin sheet, it is possible not only to improve strength and reduce weight, but also to make the thermoplastic resin sheet a combination of different materials having different hardnesses. Is hardened and the inside is softened, so that it has good cushioning properties per foot and can reduce fatigue when worn.
【図1】安全靴用先芯の概略構成図である。FIG. 1 is a schematic configuration diagram of a tip core for safety shoes.
【図2】図1の一部拡大図である。FIG. 2 is a partially enlarged view of FIG.
1 先芯 3 長繊維 5 多方向性強化樹脂シート DESCRIPTION OF SYMBOLS 1 Lead core 3 Long fiber 5 Multidirectional reinforced resin sheet
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭59−96951(JP,A) 実開 昭63−150508(JP,U) 実開 昭63−112801(JP,U) 米国特許3442032(US,A) 欧州特許出願公開100181(EP,A 1) (58)調査した分野(Int.Cl.7,DB名) A43B 1/00 - 23/30 ────────────────────────────────────────────────── (5) References JP-A-59-96951 (JP, A) JP-A-63-150508 (JP, U) JP-A-63-112801 (JP, U) US Patent 3442032 (US) , A) European Patent Application Publication 100181 (EP, A1) (58) Fields investigated (Int. Cl. 7 , DB name) A43B 1/00-23/30
Claims (1)
状に形成された複数の熱可塑性樹脂シートを多方向に重
層し、かつ加熱加圧して一体的に構成した多方向性強化
樹脂シートよりなる安全靴用先芯において、前記複数の
熱可塑性樹脂シートは硬度の異なる異種材料を組合わせ
て外側を硬質化し、その内側を軟質化した構成であるこ
とを特徴とする安全靴用先芯。1. A multidirectional reinforced resin in which a plurality of thermoplastic resin sheets containing long fibers aligned in one direction and formed into a thin sheet are overlaid in multiple directions and integrally formed by heating and pressing. In a safety shoe tip core made of a sheet, the plurality of thermoplastic resin sheets have a structure in which different materials having different hardnesses are combined to harden the outside and soften the inside thereof. core.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP03771892A JP3193096B2 (en) | 1992-02-25 | 1992-02-25 | Safety shoe tip core |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP03771892A JP3193096B2 (en) | 1992-02-25 | 1992-02-25 | Safety shoe tip core |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06141908A JPH06141908A (en) | 1994-05-24 |
JP3193096B2 true JP3193096B2 (en) | 2001-07-30 |
Family
ID=12505295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP03771892A Expired - Lifetime JP3193096B2 (en) | 1992-02-25 | 1992-02-25 | Safety shoe tip core |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3193096B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016002412A1 (en) * | 2014-07-03 | 2016-01-07 | ダイヤテックス株式会社 | Counter and shoe |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09309171A (en) * | 1996-05-22 | 1997-12-02 | Nitto Boseki Co Ltd | Fiber reinforced composite material and safety shoe toe core produced therefrom |
FR2763016B1 (en) * | 1997-05-06 | 1999-06-04 | Etex De Rech Tech Soc | PROCESS FOR PRODUCING COMPOSITE MOUTHPIECES AND COMPOSITE MOUTHPIECES OBTAINED |
AU7537098A (en) * | 1997-04-30 | 1998-11-24 | Jallatte | Composite plastic material toe caps for security shoes, and fabrication process |
FR2762800B1 (en) * | 1997-04-30 | 1999-05-28 | Etex De Rech Tech Sert Soc | METHOD FOR MANUFACTURING A HIGH-STRENGTH NON-METALLIC SAFETY AND / OR PROTECTIVE END CAP, REINFORCING INSERT AND A SECURITY AND / OR PROTECTIVE END CAP |
-
1992
- 1992-02-25 JP JP03771892A patent/JP3193096B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016002412A1 (en) * | 2014-07-03 | 2016-01-07 | ダイヤテックス株式会社 | Counter and shoe |
JPWO2016002412A1 (en) * | 2014-07-03 | 2017-04-27 | ダイヤテックス株式会社 | Moon core and shoes |
Also Published As
Publication number | Publication date |
---|---|
JPH06141908A (en) | 1994-05-24 |
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