JPS5914873A - Plastic bamboo sword - Google Patents
Plastic bamboo swordInfo
- Publication number
- JPS5914873A JPS5914873A JP12321882A JP12321882A JPS5914873A JP S5914873 A JPS5914873 A JP S5914873A JP 12321882 A JP12321882 A JP 12321882A JP 12321882 A JP12321882 A JP 12321882A JP S5914873 A JPS5914873 A JP S5914873A
- Authority
- JP
- Japan
- Prior art keywords
- plastic
- layer
- shinai
- density
- cylindrical body
- 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.)
- Pending
Links
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 本発明は、プラスチックス製竹刀に関するもの（１） である。[Detailed description of the invention] The present invention relates to a plastic bamboo sword (1) It is.
従来用いられている竹製の竹刀は、４枚割竹または６枚
割竹、一般には４枚割竹を油抜きし、乾燥した後、ソバ
取り、曲り直し、荒面削り、かんなかけ、やすり、はび
き、＜＜す、金入れなどの多くの工程を経て作られてい
る。Traditionally used bamboo shinai are split into 4 pieces or 6 pieces.In general, 4 pieces of bamboo are split into 4 pieces, after which the oil is removed and dried, the buckwheat is removed, the bamboo is re-bent, the rough surface is shaved, the surface is planed, and the file is filed. It is made through many processes such as , opening, <<su, and money holder.
ところで、最近は竹刀に向く重性の不足が目立ち、また
湿度が低くなり竹が乾燥すると割れ易くなり、割れた竹
の小片が飛散して目に入ったり、あるいは割れてささく
れた竹刀が皮ふに突き刺さるなどの事故が多発している
事情などもあり、プラスチックス製による割れない竹刀
の開発が要求されるようになってきている。このような
要求に応じて、一部でガラス繊維入り竹刀（ＦＲＰ製竹
刀）が検討されているが、ＦＲＰ製竹刀には折れ易いと
いう問題がみられる。By the way, recently there has been a noticeable lack of weight for shinai, and with the humidity being low, bamboo becomes dry and cracks easily, causing small pieces of broken bamboo to scatter and get into your eyes, or broken and shingled shinai to touch your skin. Due to the frequent occurrence of accidents such as being stabbed, there is a growing demand for the development of unbreakable Shinai made of plastic. In response to such demands, glass fiber-filled Shinai (FRP Shinai) are being considered in some areas, but FRP Shinai have the problem of being easily broken.
本発明は、ヤング率１０３〜以上のプラスチックス内層
Ｓまたは密度２．０９／ｃｄ以上の金属内層部、密度１
．０り肩以下のプラスチックス中間層部および密度１．
０〜３．０９ｆｉｒｌのプラスチックス外層部からなる
３層筒状体を基本構造とするプラスチックス製竹刀に係
り、このプラスチックス製竹刀は・重量および使用時の
曲げの点で竹製のものと殆んど大差なく、シかも割れた
り、折れたりすることが殆んどなく、その上打撃時に相
手人体に与える衝撃が少ないという効果を奏する。The present invention includes a plastic inner layer S having a Young's modulus of 103 or more or a metal inner layer having a density of 2.09/cd or more, a density of 1
．． Plastic middle layer and density below 0.
This plastic shinai has a basic structure of a three-layer cylindrical body consisting of a plastic outer layer of 0 to 3.09 firs.This plastic shinai is superior to bamboo shinai in terms of weight and bending during use. There is almost no difference, there is almost no chance of cracking or breaking, and moreover, there is an effect that there is less impact on the opponent's body when striking.
本発明に係るプラスチックス製竹刀の基本的な態様は、
第１図に横断面の端面図として示されており、それは内
層部１、中間層部２および外層部３からなる３層筒状体
を基本構造としている。The basic aspects of the plastic shinai according to the present invention are as follows:
It is shown in FIG. 1 as a cross-sectional end view, and has a basic structure of a three-layer cylindrical body consisting of an inner layer 1, an intermediate layer 2, and an outer layer 3.
内層部筒状体は、ヤング率１０５〜以上のプラスチック
スまたは密度２．０９肩以上の金属を素材に用い、竹刀
全体の曲げ剛性の維持を図っている。The inner layer cylindrical body is made of plastic with a Young's modulus of 105 or higher or metal with a density of 2.09 or higher to maintain the bending rigidity of the entire bamboo sword.
中間層部筒状体は、密度１．０９／ｃｒ／Ｉ以下のプラ
スチックス素材で形成され、内層部を形成する比較的硬
い素材相互の打撃による人体などへの損傷あるいは竹刀
自体の損傷を防いでいる。更に、外層部筒状部は、密度
１．０〜３，０り／ＣｒＡのプラスチックス素材からな
り、中間層部への損傷防止と外観を良好にする作用とを
営んでいる。そして、各層間は一般に相互に接着される
が、中間層と外層との間は接着せずに脱着可能とし、外
層部に互換性を保持せしめてもよい。The intermediate layer cylindrical body is made of a plastic material with a density of 1.09/cr/I or less, and is designed to prevent damage to the human body or the shinai itself due to mutual impact between the relatively hard materials forming the inner layer. I'm here. Further, the outer layer cylindrical portion is made of a plastic material with a density of 1.0 to 3.0 mol/CrA, and serves to prevent damage to the intermediate layer and improve the appearance. Although the layers are generally bonded to each other, the intermediate layer and the outer layer may be detachable without bonding, and the outer layer may maintain compatibility.
具体的には、次のような基本構造のものが例示される。Specifically, the following basic structure is exemplified.
〔例１〕
内層部ニクロム・バナジウム鋼管（平均肉厚０．５鰭、
密度８．０Ｍ：ｄ）
中間層部：ポリウレタンフォーム（平均肉厚６簡、密度
０．５７Ａｄ ）
外層部：ポリウレタンゴム（平Ｍ肉厚ｔ、ｏ■、密度１
．２ ｇＡＩ 、硬度Ｈｓ ９９ ）〔例２〕
例１において、内層部にアルミニウム合金管（平均肉厚
２鴎、密度２，８り／ｅｌ ）を使用〔例３〕
例１において、内層部にグラスファイバーロッド（平均
肉厚Ｑ、８ｒａｎ 、ヤング率１０５〜）を使用
図面の第２図は、本発明に係るプラスチックス製竹刀の
他の態様を示すものであり、横断面が端面図として示さ
れている。この態様にあっては、外層細筒状体が長手方
向に４分割４，５，６．７されている。更に、第３図に
横断面が端面図として示されている態様にあっては、中
間層部筒状体も長手方向に４分割８ 、９ 、 ＋０
、１１されており、この場合にあっては、外層細筒状体
の各分割部と中間層部筒状体の各分割部とが、一般に４
−８゜５−９ 、６−１０ 、７−１１の如く重なり合
っている。なお、これらは、４分割以外には６分割され
ることもある。[Example 1] Inner layer nichrome/vanadium steel pipe (average wall thickness 0.5 fin,
Density 8.0M:d) Middle layer: Polyurethane foam (average wall thickness 6cm, density 0.57Ad) Outer layer: polyurethane rubber (flat M wall thickness t, o■, density 1
．． 2 gAI, hardness Hs 99) [Example 2] In Example 1, an aluminum alloy tube (average wall thickness of 2 mm, density of 2.8 l/el) was used for the inner layer. [Example 3] In Example 1, the inner layer was made of glass. Using a fiber rod (average wall thickness Q, 8ran, Young's modulus 105~) Figure 2 shows another embodiment of the plastic shinai according to the present invention, and the cross section is shown as an end view. ing. In this embodiment, the outer thin cylindrical body is divided into four parts 4, 5, 6.7 in the longitudinal direction. Furthermore, in the embodiment in which the cross section is shown as an end view in FIG. 3, the intermediate layer cylindrical body is also divided into four parts in the longitudinal direction.
, 11, and in this case, each divided portion of the outer thin cylindrical body and each divided portion of the intermediate layer cylindrical body are generally 4
-8°5-9, 6-10, and 7-11 overlap. Note that these may be divided into six parts other than four.
このようにして構成される本発明のプラスチックス製竹
刀は、竹製竹刀の欠点である割れ易さ、折れ易さを内層
部の硬い部分とそれを包み込む中間層部の緩衝体部分と
で防ぎ、また外層部の被覆により緩衝体部分の変形や傷
付きを防止して外観をよくするばかりではなく、この外
層部は、中間層部より硬いので、試合の勝敗判定時にあ
る程度必要な打撃音を高め、またその肉厚を変化させる
ことにより、竹刀の重量を各規格の重さに調節すること
を可能とする。The plastic shinai of the present invention constructed in this manner prevents the shortcomings of bamboo shinai, such as susceptibility to breakage and breakage, by using the hard part of the inner layer and the buffer part of the middle layer that envelops it. In addition, the outer layer coating not only prevents deformation and damage to the cushioning body part and improves its appearance, but also because the outer layer is harder than the middle layer, it reduces the impact noise necessary to determine the outcome of a game. By increasing the height and changing the wall thickness, it is possible to adjust the weight of the shinai to the weight of each standard.
ＭｌｌｌｉＪは、本発明に係るプラスチックス製竹刀の
基本的な態様の横断面の端面図である。第２〜３図は、
それぞれ他の態様の横断面の端面図である０
これらの図面において、符号１は内層部、２は中間層部
、そして３は外層部をそれぞれ指示する。
代理人
弁理士 吉 １）俊 夫
第１図
ス
第３図 ６
第２図
３８５MlliJ is a cross-sectional end view of a basic aspect of the plastic shinai according to the present invention. Figures 2 and 3 are
In these drawings, reference numeral 1 designates the inner layer, 2 the intermediate layer, and 3 the outer layer, respectively. Representative Patent Attorney Yoshi 1) Toshio Figure 1 S Figure 3 6 Figure 2 385
Claims (1)
たは密度２．０９／ａ１以上の金属内層部、密度１．０
ｇ肩以下のプラスチックス中間層部および密度１．０
〜３，０９／ｃｒＡのプラスチックス外層部からなる３
Ｎ筒状体を基本構造とするプラスチックスｆｌ刀。 ２、外層部面状体が長手方向に４分割または６分割され
ている特許請求の範囲第１項記載のプラスチックス製竹
刀。 ３、中間層部筒状体が長手方向に４分割または６分割き
れている特許請求の範囲第２項記載のプラスチックス製
竹刀。 ４、外層部面状体の各分割部と中間層部筒状体の各分割
部とが重なり合っている特許請求の範囲第３項記載のプ
ラスチックス製竹刀。[Claims] 1. A plastic inner layer having a Young's modulus of io"Mu or more or a metal inner layer having a density of 2.09/a1 or more, a density of 1.0.
Plastic middle layer below g shoulder and density 1.0
~3,09/crA plastic outer layer 3
A plastic sword whose basic structure is a cylindrical body. 2. The plastic bamboo sword according to claim 1, wherein the outer layer sheet body is divided into four or six parts in the longitudinal direction. 3. The plastic bamboo sword according to claim 2, wherein the intermediate layer cylindrical body is divided into four or six parts in the longitudinal direction. 4. The plastic shinai according to claim 3, wherein each divided portion of the outer layer sheet-shaped body and each divided portion of the intermediate layer cylindrical body overlap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12321882A JPS5914873A (en) | 1982-07-15 | 1982-07-15 | Plastic bamboo sword |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12321882A JPS5914873A (en) | 1982-07-15 | 1982-07-15 | Plastic bamboo sword |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5914873A true JPS5914873A (en) | 1984-01-25 |
Family
ID=14855119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12321882A Pending JPS5914873A (en) | 1982-07-15 | 1982-07-15 | Plastic bamboo sword |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5914873A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0247792U (en) * | 1988-09-27 | 1990-04-03 | ||
| US5116186A (en) * | 1988-08-02 | 1992-05-26 | Kabushiki Kaisha Komatsu Seisakusho | Apparatus for controlling hydraulic cylinders of a power shovel |
| US5178510A (en) * | 1988-08-02 | 1993-01-12 | Kabushiki Kaisha Komatsu Seisakusho | Apparatus for controlling the hydraulic cylinder of a power shovel |
-
1982
- 1982-07-15 JP JP12321882A patent/JPS5914873A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5116186A (en) * | 1988-08-02 | 1992-05-26 | Kabushiki Kaisha Komatsu Seisakusho | Apparatus for controlling hydraulic cylinders of a power shovel |
| US5178510A (en) * | 1988-08-02 | 1993-01-12 | Kabushiki Kaisha Komatsu Seisakusho | Apparatus for controlling the hydraulic cylinder of a power shovel |
| US5356259A (en) * | 1988-08-02 | 1994-10-18 | Kabushiki Kaisha Komatsu Seisakusho | Apparatus for controlling hydraulic cylinders of a power shovel |
| JPH0247792U (en) * | 1988-09-27 | 1990-04-03 |
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