JPS6142402Y2 - - Google Patents
Info
- Publication number
- JPS6142402Y2 JPS6142402Y2 JP5626283U JP5626283U JPS6142402Y2 JP S6142402 Y2 JPS6142402 Y2 JP S6142402Y2 JP 5626283 U JP5626283 U JP 5626283U JP 5626283 U JP5626283 U JP 5626283U JP S6142402 Y2 JPS6142402 Y2 JP S6142402Y2
- Authority
- JP
- Japan
- Prior art keywords
- strength
- toecap
- glass fibers
- instep
- tip
- 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
Links
- 239000003365 glass fiber Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 8
- 239000011159 matrix material Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 229920005992 thermoplastic resin Polymers 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 210000003371 toe Anatomy 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000805 composite resin Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Description
【考案の詳細な説明】
本考案はガラス長繊維に、熱可塑性樹脂マトリ
ツクスで複合した基材を加熱圧縮成形した安全靴
先芯に関するものである。[Detailed Description of the Invention] The present invention relates to a safety shoe toecap made of a base material made of long glass fibers and a thermoplastic resin matrix that is heat compression molded.
従来、安全靴先芯については、甲部の強度がき
わめて重要視されるので鋼製のものしか実用化さ
れていない。ところが最近になつて軽量化とコス
ト低減のために、従来の鋼製安全靴先芯に代えガ
ラス短繊維を複合した樹脂製の安全靴先芯が考案
されている。しかし、このガラス短繊維を複合し
た樹脂では従来の鋼製のものに匹敵する強度が得
られず、安全靴先芯の規格（JIST 8101かわ製安
全靴Ｌ種）に合致するものはいまだに実用化がさ
れていない。 Conventionally, only steel toe caps have been put into practical use because the strength of the instep is extremely important. However, recently, in order to reduce weight and cost, a resin safety shoe toe cap made of a composite of short glass fibers has been devised in place of the conventional steel safety shoe toe cap. However, this composite resin made from short glass fibers does not have the same strength as conventional steel products, and products that meet the standards for safety shoe toes (JIST 8101 Kawa Safety Shoes Class L) have not yet been put into practical use. has not been done.
本考案は上述の問題点を解決するために、安全
靴先芯の強度をいかにして上げるか種々検討の結
果考案したもので、その目的の１つはガラス長繊
維を熱可塑性樹脂マトリツクスで複合した基材を
用い加熱加圧成形した安全靴先芯を提供しようと
するものである。 This invention was devised after various studies on how to increase the strength of the toe cap of safety shoes in order to solve the above-mentioned problems. One of the purposes was to combine long glass fibers with a thermoplastic resin matrix. The purpose of the present invention is to provide a toe cap for safety shoes that is molded under heat and pressure using a base material made of the same material.
更に、他の目的の１つは、ガラス長繊維を含む
複合基材を一旦加熱し、加圧成形によつて安全靴
先芯を作るに際し、ガラス長繊維の流動性の悪さ
から、先芯成形体の端部全般にわたつて樹脂分と
ガラス長繊維が部分的に分離し、樹脂分だけの層
を形成させるという傾向があり、先芯成形体で最
も強度を必要とする甲部先端に若干の強度低下を
きたすという問題点を解決しようとするものであ
り、最も強度を重視しなければならない先芯成形
体の甲部先端強度を向上させるために、いかにし
てガラス長繊維の均一分布を図るかを検討の結果
考案したもので、先芯成形体の甲部先端に少し外
方に突出して薄肉部をもうけることにより問題点
を解決し、高強度な安全性の高い安全靴先芯を提
供しようとするものである。 Furthermore, one of the other purposes is to once heat a composite base material containing long glass fibers and press-form it to make toe caps for safety shoes. There is a tendency for the resin and long glass fibers to partially separate over the entire edge of the body, forming a layer made of only the resin. The purpose of this project is to solve the problem of a decrease in the strength of the glass fibers, and in order to improve the strength of the tip of the toecap, where strength is most important, we have developed a method for uniformly distributing long glass fibers. This was devised as a result of a study on how to improve safety shoe toe caps by creating a thin part that protrudes slightly outward at the tip of the instep of the toecap molded body. This is what we are trying to provide.
以下、本考案の実施例を図面に基づき詳細に説
明する。 Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
本考案は、ガラス長繊維を熱可塑性樹脂マト
リツクスで複合した基材を用い加熱加圧成形した
安全靴先芯である。 The present invention is a safety shoe toecap made of a base material made of long glass fibers combined with a thermoplastic resin matrix and molded under heat and pressure.
又、この安全靴先芯の強度をより高くするため
に、先芯成形体の甲部先端に外方に突出して薄
肉部を設けたものである。 Further, in order to further increase the strength of the toe cap of the safety shoe, a thin walled portion is provided at the tip of the instep of the toe cap molded body to protrude outward.
尚、甲部先端以外に薄肉部を設けないのはあま
り強度を必要としないからであるが、これに薄肉
部を設けても同一の作用、効果が得られることは
いうまでもない。 It should be noted that the reason why the thin wall portion is not provided other than at the tip of the instep is because it does not require much strength, but it goes without saying that even if the thin wall portion is provided thereon, the same function and effect can be obtained.
本考案は上述の如く構成されるものであるから
ガラス長繊維を熱可塑性樹脂マトリツクスで複合
した基材を加熱加圧成形することによつて得られ
た安全靴先芯は、ガラス長繊維の強度が熱可塑性
樹脂マトリツクスで補完され、安全靴先芯の有用
な機能を発揮する。即ち、鋼製に近い圧迫強度と
耐衝撃性が得られ、更に鋼製先芯の場合は耐衝撃
テスト後に永久変形を起すが、本考案の先芯の場
合は弾性変形のため変形歪が元に復する。また樹
脂製のため軽量化、耐久性等の有効な効果も併せ
て得られる。 Since the present invention is constructed as described above, the safety shoe toecap obtained by heating and press-molding a base material made of long glass fibers and a thermoplastic resin matrix has the strength of the long glass fibers. is complemented by a thermoplastic matrix to perform the useful function of a safety shoe toecap. In other words, the compression strength and impact resistance are close to those of steel, and while steel toe caps undergo permanent deformation after impact tests, the toe cap of the present invention is elastically deformed, so the deformation strain is the original source. Return to In addition, since it is made of resin, it also provides effective effects such as weight reduction and durability.
更に、安全靴先芯の甲部先端には薄肉部が設
けられているため、加熱された複合基材を加圧成
形した時に、薄肉部の抵抗によつてガラス長繊維
はほとんど甲部先端に設けた薄肉部へは流れず、
結局甲部先端の位置で密な状態で均一に分布し、
強度の弱い樹脂部分は強度設計上全く必要としな
い薄肉部へ逃がされるから、安全靴先芯の甲部先
端部分の圧迫強度を著しく向上させることができ
る。 Furthermore, since there is a thin-walled part at the tip of the instep of the toecap of safety shoes, when the heated composite base material is pressure-molded, the long glass fibers are almost not attached to the tip of the instep due to the resistance of the thin-walled part. It does not flow to the thin walled part,
Eventually, it is distributed evenly and densely at the tip of the instep,
Since the resin portion with low strength is released into the thin wall portion which is not required at all in terms of strength design, the compression strength of the tip of the instep of the toe cap of the safety shoe can be significantly improved.
尚、本考案の強度を実測値で示せば、甲部平均
肉厚2.5mmの成形品において薄肉部のない形状の
場合は500Kg／cm2の圧迫破壊強度があり、更に薄
肉部を設けた場合は600Kg／cm2の圧迫破壊強度に
達し、鋼製のものに十分に匹敵する強度があり、
実用上きわめて有用な考案である。 In addition, if the strength of this invention is shown in actual measurements, a molded product with an average wall thickness of 2.5 mm in the shape without a thin wall part has a crushing strength of 500 kg/cm 2 , and when an additional thin wall part is provided. reaches a crushing strength of 600Kg/ cm2 , which is comparable in strength to steel.
This is an extremely useful idea in practice.
第１図は本考案の斜視図、第２図は同縦断側面
図。
は甲部先端、は薄肉部、はガラス長繊
維。
FIG. 1 is a perspective view of the present invention, and FIG. 2 is a longitudinal side view of the same. indicates the tip of the instep, indicates the thin wall section, and indicates the long glass fiber.
Claims (1)
合した基材で加熱、加圧成形した安全靴の先芯に
おいて、先芯の甲部先端に外方に突出して薄肉
部を形成した複合強化樹脂製安全靴先芯。 Composite reinforced resin safety shoes that are made of a composite base material of long glass fibers with a thermoplastic resin matrix, and that have a toecap formed by heating and pressure molding, and a thin section that protrudes outward at the tip of the instep of the toecap. Toecap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5626283U JPS59162003U (en) | 1983-04-14 | 1983-04-14 | Composite reinforced resin safety shoe toecap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5626283U JPS59162003U (en) | 1983-04-14 | 1983-04-14 | Composite reinforced resin safety shoe toecap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59162003U JPS59162003U (en) | 1984-10-30 |
| JPS6142402Y2 true JPS6142402Y2 (en) | 1986-12-02 |
Family
ID=30186585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5626283U Granted JPS59162003U (en) | 1983-04-14 | 1983-04-14 | Composite reinforced resin safety shoe toecap |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59162003U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2574860Y2 (en) * | 1992-07-02 | 1998-06-18 | ワイケイケイ株式会社 | Tip and safety shoes |
| JP3862978B2 (en) * | 2001-08-10 | 2006-12-27 | Ｙｋｋ株式会社 | Method for producing safety shoe toe core made of long fiber reinforced thermoplastic resin |
| MX2007015351A (en) * | 2007-12-05 | 2008-09-18 | Internac De Calzado Ten Pac S | Protective cap for industrial footwear. |
-
1983
- 1983-04-14 JP JP5626283U patent/JPS59162003U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59162003U (en) | 1984-10-30 |
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