JP2020142029A - Safety boot - Google Patents
Safety boot Download PDFInfo
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- JP2020142029A JP2020142029A JP2019043213A JP2019043213A JP2020142029A JP 2020142029 A JP2020142029 A JP 2020142029A JP 2019043213 A JP2019043213 A JP 2019043213A JP 2019043213 A JP2019043213 A JP 2019043213A JP 2020142029 A JP2020142029 A JP 2020142029A
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- foot
- wearer
- fiber
- reinforcing member
- sole
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- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims abstract description 21
- 239000011151 fibre-reinforced plastic Substances 0.000 claims abstract description 21
- 210000002683 foot Anatomy 0.000 claims description 71
- 230000003014 reinforcing effect Effects 0.000 claims description 37
- 210000003371 toe Anatomy 0.000 claims description 16
- 239000000835 fiber Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 8
- 229920006231 aramid fiber Polymers 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 4
- 238000009751 slip forming Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 abstract description 5
- 230000006866 deterioration Effects 0.000 abstract description 3
- 210000003423 ankle Anatomy 0.000 description 4
- 230000001771 impaired effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 244000309466 calf Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001230 polyarylate Polymers 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
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- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Description
本発明は、安全長靴、特に、着用者の足の底が接触する中底及び中底の反対側であって中底と表裏をなす靴底を有する靴底部、靴底部に設けられて着用者の足を覆う足部及び足部から連続して形成されて着用者の下腿を覆う胴部を備える安全長靴に関する。 INDUSTRIAL APPLICABILITY The present invention is provided on safety boots, particularly a shoe sole having a sole on the opposite side of the insole and the insole to which the sole of the wearer's foot comes into contact, and having a sole forming the front and back of the insole. The present invention relates to a safety shoe having a foot covering the foot and a torso formed continuously from the foot and covering the wearer's lower leg.
例えば、山林や荒地等を歩行したり、伐採といった作業を行ったりする場合は、いわゆる安全長靴が着用されることがある。この種の安全長靴には、着用者の足や下腿を保護する観点から、補強部材が設けられることがある。 For example, so-called safety boots may be worn when walking in forests or wastelands, or when performing operations such as logging. Safety boots of this type may be provided with reinforcing members from the viewpoint of protecting the wearer's feet and lower legs.
特許文献１には、着用者の下腿の脛に相当する部分から足の甲に相当する部分を経て爪先に相当する部分に亘る部分が、繊維強化プラスチックであるポリアレート繊維あるいはアラミド繊維で被覆されて、チェンソー等の伐採具の刃が着用者の足や下腿に接触した際に着用者の足や下腿が損傷することを防止することを目的とした安全長靴が開示されている。 In Patent Document 1, the portion corresponding to the shin of the wearer's lower leg, the portion corresponding to the instep, and the portion corresponding to the toe are coated with polyarate fiber or aramid fiber which is a fiber reinforced plastic. , Safety boots are disclosed for the purpose of preventing damage to the wearer's feet and lower legs when the blade of a cutting tool such as a chain saw comes into contact with the wearer's feet and lower legs.
ところで、特許文献１の安全長靴のように、伐採具の刃が着用者の足に接触した際に、ポリアレート繊維あるいはアラミド繊維によって着用者の足や下腿を保護する程度の強度を確保するためには、これらの繊維強化プラスチックを幾重にも積層する必要がある。 By the way, as in the safety boots of Patent Document 1, when the blade of the felling tool comes into contact with the wearer's foot, in order to secure the strength to protect the wearer's foot and lower leg with polyarate fiber or aramid fiber. Needs to stack these fiber reinforced plastics in multiple layers.
このように、繊維強化プラスチックを幾重にも積層するとすれば、下腿の脛に相当する部分から足の甲に相当する部分を経て爪先に相当する部分に亘る部分が硬化して変形量が小さくなることから、安全長靴の着脱が困難になったり、良好な着用感覚が損われたり、さらには重量が増大したりして、安全長靴の着用性が低下することが懸念される。 In this way, if fiber reinforced plastics are laminated in multiple layers, the portion corresponding to the shin of the lower leg, the portion corresponding to the instep, and the portion corresponding to the toe are hardened and the amount of deformation is reduced. Therefore, there is a concern that it becomes difficult to put on and take off the safety boots, a good wearing feeling is impaired, and the weight is increased, so that the wearability of the safety boots is lowered.
本発明は、上記事情に鑑みてなされたものであり、着用性の低下を招くことなく、着用者の足や下腿を適切に保護することができる安全長靴を提供することを課題とするものである。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide safety boots capable of appropriately protecting the wearer's feet and lower legs without causing deterioration of wearability. is there.
上記目的を達成するための安全長靴は、着用者の足の底が接触する中底及び中底の反対側であって中底と表裏をなす靴底を有する靴底部、靴底部に設けられて着用者の足を覆う足部及び足部から連続して形成されて着用者の下腿を覆う胴部を備える安全長靴において、足部から胴部に亘って配置される、第１の繊維強化プラスチックからなる第１補強部材と、第１補強部材に積層されて着用者の下腿の少なくとも脛を保護する、第１の繊維強化プラスチックとは異なる第２の繊維強化プラスチックからなる第２補強部材と、を備えることを特徴としている。 Safety boots for achieving the above objectives are provided on the sole and the sole, which are opposite to the insole and the insole where the sole of the wearer's foot comes into contact and have a sole that forms the front and back of the insole. A first fiber-reinforced plastic that is disposed from the foot to the torso in a safety shoe that includes a foot covering the wearer's foot and a torso that is continuously formed from the foot and covers the wearer's lower leg. A first reinforcing member made of, and a second reinforcing member made of a second fiber-reinforced plastic different from the first fiber-reinforced plastic, which is laminated on the first reinforcing member to protect at least the shin of the wearer's lower leg. It is characterized by having.
この安全長靴によれば、山林や荒地等を歩行するような場合において、地面に散逸する木の枝や残材等の尖った先端が着用者の下腿や足に接触したとしても、足部から胴部に亘って第１補強部材が配置され、かつ着用者の下腿の少なくとも脛に相当する部分に第２補強部材が配置されることから、これらの尖った先端が着用者の下腿や足に突き刺さることが防止される。 According to these safety boots, when walking in forests or wastelands, even if sharp tips such as tree branches and residual materials scattered on the ground come into contact with the wearer's lower legs and feet, they can be seen from the feet. Since the first reinforcing member is arranged over the torso and the second reinforcing member is arranged at least in the portion corresponding to the shin of the wearer's lower leg, these sharp tips are placed on the wearer's lower leg and foot. It is prevented from being pierced.
しかも、この安全長靴は、足部から胴部に亘って配置された第１補強部材に第２補強部材が積層されるものであって、複数の補強部材が無用に積層されることがないことから、足部及び胴部が硬化することが抑制されて、これらの部位の変形量を確保することができる。 Moreover, in this safety boots, the second reinforcing member is laminated on the first reinforcing member arranged from the foot to the body, and a plurality of reinforcing members are not unnecessarily laminated. Therefore, the hardening of the foot and the torso is suppressed, and the amount of deformation of these parts can be secured.
したがって、着脱が困難になったり、良好な着用感覚が損われたりすることがなく、安全長靴の着用性の低下を招くことがない。 Therefore, it does not become difficult to put on and take off, and the good wearing feeling is not impaired, and the wearability of the safety boots is not deteriorated.
この安全長靴は、第１の繊維強化プラスチックがパラ系芳香族アラミド繊維であることを特徴としており、第２の繊維強化プラスチックが少なくともガラス繊維を含む繊維であることを特徴としており、さらに、第２補強部材は、足部における第１補強部材に積層されて着用者の足の甲を保護することを特徴としている。 The safety boots are characterized in that the first fiber reinforced plastic is a para-aromatic aramid fiber, the second fiber reinforced plastic is a fiber containing at least glass fiber, and further, the first. The two reinforcing members are characterized in that they are laminated on the first reinforcing member in the foot portion to protect the instep of the wearer.
しかも、第１補強部材に第２補強部材が積層された部位における足部及び胴部に対して電動型のチェンソーでソーチェーンの回転速度を２０ｍ／ｓとして耐切創試験を行う場合の耐切創荷重が３０Ｎであることを特徴としている。 Moreover, the incision resistance load when the incision resistance test is performed with the saw chain at a rotation speed of 20 m / s with an electric chainsaw for the foot and the body in the portion where the second reinforcement member is laminated on the first reinforcement member. Is characterized by being 30N.
一方、この安全長靴は、足部の先端側に内装されて靴底部の中底側に当接する下端縁を有して着用者の足の指を保護する金属製の先芯を備え、先芯の下端縁が中底に当接する位置に対応する靴底部の靴底側から突出するブロック状の突出部が形成されたことを特徴としている。 On the other hand, this safety boot has a metal toecap that is built on the tip side of the foot and has a lower edge that abuts on the insole side of the sole to protect the wearer's toes. It is characterized in that a block-shaped projecting portion is formed so as to project from the shoe sole side of the shoe sole portion corresponding to the position where the lower end edge of the shoe abuts the insole.
この発明によれば、着用性の低下を招くことがなく、着用者の足や下腿が適切に保護される。 According to the present invention, the wearer's feet and lower legs are appropriately protected without causing deterioration in wearability.
次に、図１〜図４に基づいて、本発明の実施の形態に係る安全長靴について説明する。 Next, the safety boots according to the embodiment of the present invention will be described with reference to FIGS. 1 to 4.
図１は、本実施の形態に係る安全長靴の構成の概略を説明する図であり、図示のように、安全長靴１０は、靴底部２０、靴底部２０に設けられる足部３０、足部３０から連続して形成される胴部４０及び胴部４０の上端縁に形成されるフード５０を備える。 FIG. 1 is a diagram for explaining the outline of the configuration of the safety boots according to the present embodiment. As shown in the drawing, the safety boots 10 have a shoe sole 20 and a foot portion 30 and a foot portion 30 provided on the shoe sole portion 20. A body portion 40 formed continuously from the body portion 40 and a hood 50 formed on the upper end edge of the body portion 40 are provided.
靴底部２０は、着用者の爪先側の先端２０Ａ及び着用者の踵側の後端２０Ｂを有するゴム製であって、着用者の足の底が接触する中底２０ａ及びこの中底２０ａの反対側であって中底２０ａと表裏をなす靴底２０ｂを有して形成される。 The shoe sole 20 is made of rubber having a tip 20A on the toe side of the wearer and a rear end 20B on the heel side of the wearer, and is the opposite of the insole 20a to which the sole of the wearer's foot contacts and the insole 20a. It is formed with a shoe sole 20b that is on the side and forms the front and back of the insole 20a.
図２は、図１の矢線Ａから安全長靴を見た場合の概略を説明する図である。図示のように、この靴底部２０の靴底２０ｂには、本実施の形態では、靴底２０ｂ側から突出する略半球状の複数のスタッド２１及び円柱状の複数のスタッド２３が適宜配置されて、靴底２０ｂがいわゆるスパイク底として形成される。 FIG. 2 is a diagram illustrating an outline when the safety boots are viewed from the arrow line A in FIG. As shown in the figure, in the present embodiment, a plurality of substantially hemispherical studs 21 and a plurality of columnar studs 23 projecting from the shoe sole 20b side are appropriately arranged on the shoe sole 20b of the shoe sole portion 20. , The shoe sole 20b is formed as a so-called spike sole.
図３は、図２のＩＩＩ−ＩＩＩ線の断面図である。図示のように、スタッド２１には、本実施の形態では、鋼線が折曲されて形成された弾性を有する滑り止め金具２２が埋設される。 FIG. 3 is a cross-sectional view taken along the line III-III of FIG. As shown in the figure, in the present embodiment, the stud 21 is embedded with an elastic non-slip metal fitting 22 formed by bending a steel wire.
この滑り止め金具２２は、水平方向に作用する弾性を有する平面視で環状の水平バネ部２２ａ、及び水平バネ部２２ａから折曲して形成されて垂直方向に作用する弾性を有する垂直バネ部２２ｂを備える。 The non-slip metal fitting 22 is formed by bending from an annular horizontal spring portion 22a and a horizontal spring portion 22a in a plan view having elasticity acting in the horizontal direction, and has an elastic vertical spring portion 22b acting in the vertical direction. To be equipped.
この滑り止め金具２２は、本実施の形態では、例えば互いに隣接するスタッド２１にそれぞれ埋設される場合においては、水平バネ部２２ａにおいて水平方向に作用する弾性が互いに異なる水平方向に作用するようにそれぞれ埋設される。 In the present embodiment, for example, when the anti-slip metal fittings 22 are embedded in studs 21 adjacent to each other, the elasticity acting in the horizontal direction at the horizontal spring portion 22a acts in different horizontal directions. It will be buried.
さらに、靴底部２０の靴底２０ｂには、図２で示すように、靴底部２０の先端２０Ａ側において、靴底２０ｂ側から突出するブロック状の複数の突出部２４が形成される。 Further, as shown in FIG. 2, the shoe sole 20b of the shoe sole 20 is formed with a plurality of block-shaped projecting portions 24 projecting from the shoe sole 20b side on the tip 20A side of the shoe sole 20.
この突出部２４は、靴底２０ｂにおいて、足部３０の先端側に内装される後述する先芯１２の下端縁１２ａが当接する靴底部２０の中底２０ａに対応する位置に形成され、本実施の形態では、中底２０ａに当接する先芯１２の下端縁１２ａに沿って３基が形成される。 The protruding portion 24 is formed in the shoe sole 20b at a position corresponding to the insole 20a of the shoe sole portion 20 to which the lower end edge 12a of the toecap 12 described later, which is installed on the tip end side of the foot portion 30, abuts. In the form of, three units are formed along the lower end edge 12a of the toecap 12 that abuts on the insole 20a.
図４は、図１の矢線Ｂで示す部分の一部破断図である。図示のように、足部３０及び胴部４０は、これら足部３０及び胴部４０の内表面から外表面に向かって複数の部材が積層された積層構造であって、足部３０によって着用者の足が覆われ、胴部４０によって着用者の下腿が覆われる。 FIG. 4 is a partially broken view of the portion indicated by the arrow line B in FIG. As shown in the figure, the foot portion 30 and the body portion 40 have a laminated structure in which a plurality of members are laminated from the inner surface to the outer surface of the foot portion 30 and the body portion 40, and the wearer is provided with the foot portion 30. The feet are covered, and the body 40 covers the wearer's lower legs.
本実施の形態では、これら足部３０及び胴部４０の内表面としてスポンジゴム１１が配置される。このスポンジゴム１１の足部３０に相当する部分であって着用者の足の指を覆う部分、すなわち足部３０の先端側に金属製の先芯１２が内装される。 In the present embodiment, the sponge rubber 11 is arranged as the inner surfaces of the foot portion 30 and the body portion 40. A metal toecap 12 is installed in a portion of the sponge rubber 11 that corresponds to the foot portion 30 and covers the toes of the wearer, that is, on the tip end side of the foot portion 30.
この先芯１２は、下端縁１２ａ及び上端縁１２ｂを有して下端縁１２ａと上端縁１２ｂとの間が着用者の足の指を覆うように湾曲した殻状に形成され、下端縁１２ａが靴底部２０の中底２０ａに当接し、上端縁１２ｂがスポンジゴム１１の足部３０に相当する部分であって着用者の足の指の根元の近傍を覆う部分に位置する。 The toecap 12 has a lower end edge 12a and an upper end edge 12b, and the lower end edge 12a and the upper end edge 12b are formed in a curved shell shape so as to cover the wearer's toes, and the lower end edge 12a is a shoe. It abuts on the insole 20a of the bottom portion 20, and the upper end edge 12b is located at a portion corresponding to the foot portion 30 of the sponge rubber 11 and covering the vicinity of the base of the toes of the wearer.
この先芯１２の上端縁１２ｂに当接されるとともに、スポンジゴム１１の足部３０に相当する部分であって着用者の足の甲に相当する部分からスポンジゴム１１の胴部４０に相当する部分に、第１補強部材１３が重ね合わせられて積層されて、足部３０における着用者の足の甲に相当する部分から胴部４０の全範囲が補強される。 Along with being in contact with the upper end edge 12b of the toecap 12, a portion corresponding to the foot portion 30 of the sponge rubber 11 and a portion corresponding to the instep of the wearer to a portion corresponding to the body portion 40 of the sponge rubber 11. The first reinforcing member 13 is overlapped and laminated to reinforce the entire range of the body portion 40 from the portion of the foot portion 30 corresponding to the instep of the wearer.
この第１補強部材１３は、第１の繊維強化プラスチックによって構成されるものであって、第１の繊維強化プラスチックは、本実施の形態では、強度の高いパラ系芳香族アラミド繊維が採用される。 The first reinforcing member 13 is made of a first fiber reinforced plastic, and in the present embodiment, a high-strength para-aromatic aramid fiber is adopted as the first fiber reinforced plastic. ..
一方、先芯１２に重ね合わせられるとともに、第１補強部材１３の足部３０に相当する部分であって着用者の足の甲に相当する部分から第１補強部材１３の胴部４０に相当する部分であって着用者の下腿の脛に相当する部分に、第２補強部材１４が重ね合わせられて積層されて、足部３０から胴部４０に相当する部分であって着用者の下腿の脛に相当する部分が補強される。 On the other hand, it is superposed on the toecap 12, and the portion corresponding to the foot portion 30 of the first reinforcing member 13 and corresponding to the instep of the wearer corresponds to the body portion 40 of the first reinforcing member 13. The second reinforcing member 14 is superposed and laminated on the portion corresponding to the shin of the wearer's lower leg, and is the portion corresponding to the foot 30 to the torso 40 and the shin of the wearer's lower leg. The part corresponding to is reinforced.
この第２補強部材１４は、第１の繊維強化プラスチックとは異なる第２の繊維強化プラスチックによって構成されるものであって、第２の繊維強化プラスチックは、本実施の形態では、ポリアリレート繊維とガラス繊維とが組み合わせられた強度の高い繊維が採用される。 The second reinforcing member 14 is made of a second fiber reinforced plastic different from the first fiber reinforced plastic, and the second fiber reinforced plastic is the polyarylate fiber in the present embodiment. High-strength fiber combined with glass fiber is adopted.
第２補強部材１４として採用される繊維は、本実施の形態では、「防護服一般−機械的特性−鋭利物に対する切創抵抗性試験」（ＪＩＳ Ｔ ８０５２）に準拠した試験結果によれば、
耐切創荷重（Ｎ）：４３．３
切断強さ（Ｎ）：緯３４．５，経１２．１，斜１６．３
であることが確認されている。
In the present embodiment, the fiber used as the second reinforcing member 14 has a test result based on "general protective clothing-mechanical properties-cut resistance test on sharp objects" (JIS T 8052).
Cut resistance load (N): 43.3
Cutting strength (N): latitude 34.5, warp 12.1, diagonal 16.3
It has been confirmed that.
この第２補強部材１４に重ね合わせられるとともに、胴部４０において第２補強部材１４が配置されていない部分においては第１補強部材１３に、胴ゴム１５が重ね合わせられて積層されて、足部３０及び胴部４０の全範囲に配置される。 In addition to being superposed on the second reinforcing member 14, the body rubber 15 is superposed and laminated on the first reinforcing member 13 in the portion of the body 40 where the second reinforcing member 14 is not arranged, and the foot portion. It is arranged in the entire range of 30 and the body 40.
この胴ゴム１５の足部３０に相当する部分から胴ゴム１５の胴部４０に相当する部分であって着用者の下腿の脛に相当する部分に、甲ゴム１６が重ね合わせられて積層されて、足部３０から胴部４０に相当する部分であって着用者の下腿の脛に相当する部分に配置される。 The instep rubber 16 is laminated on the portion corresponding to the foot portion 30 of the torso rubber 15 to the portion corresponding to the torso portion 40 of the torso rubber 15 and corresponding to the shin of the lower leg of the wearer. , It is arranged in the portion corresponding to the foot portion 30 to the torso portion 40 and corresponding to the shin of the wearer's lower leg.
この甲ゴム１６の足部３０に相当する部分であって着用者の足の指に相当する部分から、甲ゴム１６の足部３０に相当する部分であって着用者の足の指の根元の近傍を覆う部分に、爪先ゴム１７が重ね合わせられて積層されて、足部３０の着用者の足の指に相当する部分から足部３０の着用者の足の指の根元の近傍を覆う部分に配置される。 From the part corresponding to the foot 30 of the instep rubber 16 and corresponding to the toes of the wearer to the part corresponding to the foot 30 of the instep rubber 16 and the base of the toes of the wearer. A portion where the toe rubber 17 is superposed and laminated on the portion covering the vicinity, and the portion corresponding to the toes of the wearer of the foot 30 to cover the vicinity of the base of the toes of the wearer of the foot 30. Placed in.
一方、図１で示すように、胴ゴム１５の足部３０に相当する部分であって着用者の踵から足首の後部に相当する部分から、胴ゴム１５の胴部４０に相当する部分であって着用者のふくらはぎに相当する部分には、本実施の形態では、後側ゴム１８が重ね合わせられて積層されて、足部３０の着用者の足の踵から足首の後部に相当する部分から胴部４０の着用者のふくらはぎに相当する部分に配置される。 On the other hand, as shown in FIG. 1, the portion corresponding to the foot portion 30 of the torso rubber 15 and the portion corresponding to the rear portion of the ankle from the heel of the wearer to the portion corresponding to the torso portion 40 of the torso rubber 15. In the present embodiment, the rear rubber 18 is laminated on the portion corresponding to the wearer's calf, and the portion corresponding to the heel of the wearer's foot to the rear part of the ankle of the foot 30 is formed. It is arranged in a portion corresponding to the wearer's calf of the torso 40.
さらに、後側ゴム１８の足部３０に相当する部分であって着用者の踵から足首の後部に相当する部分には、本実施の形態では、踵ゴム１９が重ね合わせられて積層されて、足部３０の着用者の踵から足首の後部に相当する部分に配置される。 Further, in the present embodiment, the heel rubber 19 is overlapped and laminated on the portion corresponding to the foot portion 30 of the rear rubber 18 and corresponding to the portion corresponding to the rear portion of the wearer's heel to the ankle. It is arranged from the heel of the wearer of the foot 30 to a portion corresponding to the back of the ankle.
フード５０は、綿あるいは合成繊維で形成された部材であって、例えば面ファスナのような係着部材で係着されることによって着用者の下腿に装着される。 The hood 50 is a member made of cotton or synthetic fibers and is attached to the wearer's lower leg by being engaged with an engagement member such as a hook-and-loop fastener.
このような安全長靴１０を着用者が着用して、山林や荒地等を歩行するような場合において、地面に散逸する木の枝や残材等の尖った先端が着用者の下腿や足に接触したとしても、足部３０から胴部４０に亘って第１補強部材１３が配置され、かつ足部３０から胴部４０に相当する部分であって着用者の下腿の脛に相当する部分に第２補強部材１４が配置されることから、これらの尖った先端が着用者の下腿や足に突き刺さることが防止される。 When the wearer wears such safety boots 10 and walks in a mountain forest or a wasteland, sharp tips such as tree branches and residual materials scattered on the ground come into contact with the wearer's lower legs and feet. Even if this is the case, the first reinforcing member 13 is arranged from the foot portion 30 to the torso portion 40, and the portion corresponding to the foot portion 30 to the torso portion 40 and corresponding to the shin of the wearer's lower leg is the first. Since the 2 reinforcing members 14 are arranged, it is possible to prevent these sharp tips from sticking to the wearer's lower legs and feet.
しかも、本実施の形態の安全長靴１０は、足部３０から胴部４０に亘って配置された第１補強部材１３に第２補強部材１４が積層されるものであって、複数の補強部材が無用に積層されることがないことから、足部３０及び胴部４０が硬化することが抑制されて、これらの部位の変形量を確保することができる。 Moreover, in the safety boots 10 of the present embodiment, the second reinforcing member 14 is laminated on the first reinforcing member 13 arranged from the foot portion 30 to the body portion 40, and a plurality of reinforcing members are provided. Since it is not unnecessarily laminated, the foot portion 30 and the body portion 40 are suppressed from being hardened, and the amount of deformation of these portions can be secured.
したがって、着脱が困難になったり、良好な着用感覚が損われたりすることがなく、安全長靴１０の着用性の低下を招くことがない。 Therefore, it does not become difficult to put on and take off, and the good wearing feeling is not impaired, and the wearability of the safety boots 10 is not deteriorated.
さらに、本実施の形態では、第１補強部材１３には強度の高いパラ系芳香族アラミド繊維が採用され、第２補強部材１４にはポリアリレート繊維とガラス繊維とが組み合わせられた強度の高い繊維が採用されることから、耐貫通性及び耐切創性に富む。 Further, in the present embodiment, a high-strength para-aromatic aramid fiber is adopted for the first reinforcing member 13, and a high-strength fiber in which a polyarylate fiber and a glass fiber are combined is used for the second reinforcing member 14. Is adopted, so it is rich in penetration resistance and cut resistance.
一方、安全長靴１０は、着用者の足の指を覆う部分である足部３０の先端側に金属製の先芯１２が内装されることから、この部分に重量物が落下した場合であっても、着用者の足の指が損傷することが防止される。 On the other hand, in the safety boots 10, a metal toecap 12 is installed on the tip side of the foot portion 30, which is a portion covering the wearer's toes, so that a heavy object falls on this portion. Also, the wearer's toes are prevented from being damaged.
しかも、この先芯１２の下端縁１２ａが中底２０ａに当接する位置に対応する靴底部２０における靴底２０ｂ側から靴底２０ｂ側から突出するブロック状の複数の突出部２４が形成されることから、先芯１２が内装された足部３０の先端側に重量物が落下した場合であっても、先芯１２が下端縁１２ａにおいて靴底２０ｂを貫通してしまうことが抑制される。 Moreover, since a plurality of block-shaped projecting portions 24 protruding from the shoe sole 20b side to the shoe sole 20b side in the shoe sole portion 20 corresponding to the position where the lower end edge 12a of the toecap 12 abuts on the insole 20a are formed. Even when a heavy object falls on the tip side of the foot portion 30 in which the toecap 12 is installed, it is possible to prevent the toecap 12 from penetrating the shoe sole 20b at the lower end edge 12a.
さらに、本実施の形態では、互いに隣接するスタッド２１に滑り止め金具２２が埋設される場合においては、水平バネ部２２ａにおいて水平方向に作用する弾性が互いに異なる水平方向に作用するようにそれぞれ埋設されることから、着用者が歩行する足場に応じて衝撃を精密に吸収することができる。 Further, in the present embodiment, when the non-slip metal fittings 22 are embedded in the studs 21 adjacent to each other, they are embedded so that the elasticity acting in the horizontal direction at the horizontal spring portion 22a acts in different horizontal directions. Therefore, the impact can be precisely absorbed according to the foothold on which the wearer walks.
（実施例）
図１の矢線Ｃで示す安全長靴１０の足部３０及び図１の矢線Ｄで示す安全長靴１０の胴部４０に対して、電動型のチェンソーでソーチェーンの回転速度を２０ｍ／ｓとして耐切創試験（ＥＮ ＩＳＯ １１３９３−３：２０１８（旧名称 ＥＮ ３８１−３：１９９６））を実施したところ、耐切創荷重が３０Ｎであることが確認された。
(Example)
With respect to the foot 30 of the safety boots 10 shown by the arrow C in FIG. 1 and the body 40 of the safety boots 10 shown by the arrow D in FIG. 1, the rotation speed of the saw chain is set to 20 m / s with an electric chainsaw. When a cut resistance test (EN ISO 11393-3: 2018 (former name EN 381-3: 1996)) was carried out, it was confirmed that the cut resistance load was 30 N.
なお、本発明は上記実施の形態及び上記実施例に限定されることはなく、発明の趣旨を逸脱しない範囲で種々の変更が可能である。上記実施の形態では、足部３０及び胴部４０の内表面から外表面に向かって積層される部材がスポンジゴム１１から爪先ゴム１７あるいは踵ゴム１９である場合を説明したが、更に別の部材が任意の部位に積層されてもよい。 The present invention is not limited to the above-described embodiment and the above-described embodiment, and various modifications can be made without departing from the spirit of the invention. In the above embodiment, the case where the members laminated from the inner surface to the outer surface of the foot portion 30 and the body portion 40 are from the sponge rubber 11 to the toe rubber 17 or the heel rubber 19 has been described, but still another member. May be laminated on any site.
１０ 安全長靴
１２ 先芯
１２ａ 下端縁
１３ 第１補強部材
１４ 第２補強部材
２０ 靴底部
２０ａ 中底
２０ｂ 靴底
２４ 突出部
３０ 足部
４０ 胴部
10 Safety boots 12 Toecap 12a Lower edge 13 First reinforcing member 14 Second reinforcing member 20 Sole 20a Insole 20b Sole 24 Protruding 30 Foot 40 Body
Claims (6)
前記足部から前記胴部に亘って配置される、第１の繊維強化プラスチックからなる第１補強部材と、
該第１補強部材に積層されて前記着用者の下腿の少なくとも脛を保護する、前記第１の繊維強化プラスチックとは異なる第２の繊維強化プラスチックからなる第２補強部材と、
を備えることを特徴とする安全長靴。 An insole that the sole of the wearer's foot comes into contact with, a shoe sole that has a sole that is opposite to the insole and forms the front and back of the insole, and a foot that is provided on the sole and covers the wearer's foot. And in safety boots having a torso that is continuously formed from the foot and covers the wearer's lower legs.
A first reinforcing member made of a first fiber reinforced plastic, which is arranged from the foot portion to the body portion, and
A second reinforcing member made of a second fiber reinforced plastic different from the first fiber reinforced plastic, which is laminated on the first reinforcing member and protects at least the shin of the wearer's lower leg.
Safety boots characterized by being equipped with.
前記足部における前記第１補強部材に積層されて前記着用者の足の甲を保護することを特徴とする請求項１〜３のいずれか１項に記載の安全長靴。 The second reinforcing member is
The safety boots according to any one of claims 1 to 3, wherein the safety boots are laminated on the first reinforcing member in the foot portion to protect the instep of the wearer.
該先芯の前記下端縁が前記中底に当接する位置に対応する前記靴底部の前記靴底側から突出するブロック状の突出部が形成されたことを特徴とする請求項１〜５のいずれか１項に記載の安全長靴。 It has a metal toecap that is built on the tip side of the foot and has a lower edge that abuts the insole side of the shoe sole to protect the wearer's toes.
Any of claims 1 to 5, wherein a block-shaped projecting portion of the shoe sole portion projecting from the shoe sole side corresponding to a position where the lower end edge of the toecap comes into contact with the insole is formed. The safety boots described in item 1.
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| JP7465544B2 (en) | 2020-10-01 | 2024-04-11 | 日進ゴム株式会社 | Cut-resistant shoes |
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| JP7465544B2 (en) | 2020-10-01 | 2024-04-11 | 日進ゴム株式会社 | Cut-resistant shoes |
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