JPH0464714B2 - - Google Patents
Info
- Publication number
- JPH0464714B2 JPH0464714B2 JP59127738A JP12773884A JPH0464714B2 JP H0464714 B2 JPH0464714 B2 JP H0464714B2 JP 59127738 A JP59127738 A JP 59127738A JP 12773884 A JP12773884 A JP 12773884A JP H0464714 B2 JPH0464714 B2 JP H0464714B2
- Authority
- JP
- Japan
- Prior art keywords
- splitter
- shinai
- reinforcing member
- wariko
- impact
- 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
- 230000003014 reinforcing effect Effects 0.000 claims description 22
- 239000002657 fibrous material Substances 0.000 claims description 11
- 239000000835 fiber Substances 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 description 20
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 13
- 235000017491 Bambusa tulda Nutrition 0.000 description 13
- 241001330002 Bambuseae Species 0.000 description 13
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 13
- 239000011425 bamboo Substances 0.000 description 13
- 208000000260 Warts Diseases 0.000 description 9
- 201000010153 skin papilloma Diseases 0.000 description 9
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 6
- 239000011151 fibre-reinforced plastic Substances 0.000 description 6
- 239000002023 wood Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 239000003562 lightweight material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 206010058109 Hangnail Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- YYJNOYZRYGDPNH-MFKUBSTISA-N fenpyroximate Chemical compound C=1C=C(C(=O)OC(C)(C)C)C=CC=1CO/N=C/C=1C(C)=NN(C)C=1OC1=CC=CC=C1 YYJNOYZRYGDPNH-MFKUBSTISA-N 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Buffer Packaging (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Fish Paste Products (AREA)
Description
【発明の詳細な説明】
本発明は竹刀（しない）の割子に関し、特に、
割子の側面方向の耐衝撃性に優れた割子に関す
る。[Detailed Description of the Invention] The present invention relates to a wariko of a bamboo sword (shinai), and in particular,
This invention relates to a warizo that has excellent impact resistance in the lateral direction of the warizo.
竹刀はその名の示す通り、天然の竹材で作られ
ているが、竹製竹刀の欠点は衝撃に対する耐久性
が特に弱いことである。このため、使用時におい
て竹刀の割子にささくれ、ひび、割れ等が生じ、
場合によつては折損による身体の損傷事故をひき
起している。 As the name suggests, shinai are made from natural bamboo material, but the drawback of bamboo shinai is that they are particularly weak against impact. As a result, hangnails, cracks, splits, etc. may occur on the wariko of the shinai during use.
In some cases, breakage has caused bodily injury accidents.
かような問題を解決すべく、竹刀の割子を各種
の複合材料で構成したものが開発されている。複
合材料による竹刀のうちの或るものは、衝撃に対
する耐久性の点の問題点はほぼ解決できるもので
あるが、残念なことに実際には殆ど使用されてい
ないのが実情である。その最大の理由は、複合材
料による竹刀の重量が、通常の竹製竹刀の重量よ
りもはるかに大きくなつてしまい、実際の使用感
覚が竹製竹刀とは全く異質のものになつてしまう
ことにある。 In order to solve these problems, Shinai warikos made of various composite materials have been developed. Some bamboo swords made of composite materials can almost solve the problem of durability against impact, but unfortunately, they are hardly ever used. The biggest reason for this is that the weight of a shinai made of composite material is much greater than that of a regular bamboo shinai, and the actual feeling of use is completely different from that of a bamboo shinai. be.
従つて、実際の使用感覚が天然の竹製竹刀とほ
ぼ等しくなるような軽量性と耐衝撃性とを備えた
複合竹刀の開発が要望されているのである。 Therefore, there is a need for the development of a composite shinai that is lightweight and impact resistant so that the feeling of use is almost the same as that of a natural bamboo shinai.
竹刀により剣道の練習、試合を行う場合、竹刀
の割子は、互いに相手の竹刀から、割子の表面に
衝撃荷重を受けると同時に割子の側面にも衝撃荷
重を受ける。これらの衝撃荷重のうち、割子の表
面に作用する衝撃荷重は比較的広い接触面積で受
け止められるため、衝撃による割子の損傷を招く
危険性は比較的少ないが、割子の側面に作用する
衝撃荷重は小さな接触面積で受け止められるた
め、衝撃により割子の側面の凹み、ひび割れ、裂
け等を特に顕著に発生させ易い。 When practicing or competing in kendo with a shinai, the wariko of the shinai receives impact loads from the opponent's shinai on the surface of the wariko and at the same time on the sides of the wariko. Among these impact loads, the impact loads that act on the surface of the warizo are received by a relatively wide contact area, so there is a relatively low risk of damage to the warizo due to the impact. Since the impact load is received by a small contact area, the impact is particularly likely to cause dents, cracks, tears, etc. on the sides of the splitter.
そこで本発明の目的は、割子の表面に作用する
衝撃力により生じる割子の曲げ変形に対する強度
の優れたものであることはもとより、割子の側面
に作用する衝撃に対しても容易に凹みや、割れ、
裂れ等を生じさせることのない強度を備えたもの
であつて、しかも、天然の竹製竹刀に匹敵する軽
量性をも得ることのできる竹刀の割子を提供する
ことである。 Therefore, an object of the present invention is to provide a product that not only has excellent strength against bending deformation of the warzi caused by impact force acting on the surface of the warizo, but also easily dents due to impact acting on the side surface of the warizo. Ya, crack,
To provide a wariko for a shinai that has strength that does not cause splitting, etc., and can also have a lightness comparable to a shinai made of natural bamboo.
割子の表面に作用する衝撃力による耐曲げ性を
向上させるために、本発明の割子では、割子の横
断方向から見てボツクス状の形状をなす補強部材
によつて割子が補強されている。 In order to improve the bending resistance due to the impact force acting on the surface of the wart, in the wart of the present invention, the wart is reinforced with a reinforcing member having a box-like shape when viewed from the transverse direction of the wart. ing.
割子の側面に作用する衝撃力による割子側面の
凹み、割れ、裂け等に対する強度を向上させるた
めに、本発明の割子では、前記ボツクス状の補強
部材で囲まれる領域に繊維質材料の芯体が設けて
あり、この芯体の繊維の方向を割子の幅方向に延
びるように配置してある。 In order to improve the strength against denting, cracking, tearing, etc. of the side surface of the wart due to the impact force acting on the side of the wart, the wart of the present invention includes a fibrous material in the area surrounded by the box-shaped reinforcing member. A core is provided, and the fibers of the core are arranged so as to extend in the width direction of the splitter.
また、割子の表面および側面に作用する衝撃力
に対する強度は上記ボツクス状補強部材および繊
維質芯体により十分な強度のものが得られるた
め、従来の複合竹刀のようにアルミニウム等の金
属シエルで特別に補強する必要もなく、従つて、
ほぼ天然竹製の竹刀と同等の重量をもつ軽量性を
得ることができる。 In addition, the box-shaped reinforcing member and the fibrous core provide sufficient strength against the impact force acting on the surface and side surfaces of the wariko, so unlike conventional composite shinai, metal shells such as aluminum are used. There is no need for special reinforcement, therefore,
It is lightweight and has almost the same weight as a shinai made of natural bamboo.
以下、本発明の竹刀の割子を添付図面に基づい
て説明する。尚、本明細書において使用する「バ
ツクス状」なる用語は、図示のごとき完全な閉長
方形を形成する形状のみではなく、４つの角部又
は各辺の任意の箇所に若干の間隙を有する形状の
もの、および任意の各辺が若千彎曲している形状
のものも含まれるものとする。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the bamboo sword wariko of the present invention will be explained based on the accompanying drawings. Note that the term "back-shaped" used in this specification refers not only to a shape that forms a complete closed rectangle as shown in the figure, but also to a shape that has a slight gap at any part of the four corners or each side. It also includes objects with a shape in which each side is slightly curved.
第１図は、竹刀１０の斜視図であり、通常、竹
刀１０は４本の割子１２から構成されている。 FIG. 1 is a perspective view of a shinai 10, and normally the shinai 10 is composed of four splits 12.
第２図は、本発明の竹刀の割子１２の概略構成
を示す横断面図であり、割子１２には、ボツクス
状の断面構造を有する補強部材１４と、該補強部
材１４を包囲する四方の面の表面保護材１６、側
面保護材１８および裏面材２０とが設けられてい
る。このボツクス状補強部材の横断面形状は、そ
の内面、外面ともにほぼ矩形をなすよう構成され
ている。また、補強部材１４で囲まれる領域２２
には、後述のごとき構成による繊維質材料の芯体
が設けられている。表面保護材１６、側面保護材
１８、および裏面材２０については直接本発明に
関連するものではないが、これらは強度および軽
量性の観点から、各種プラスチツク、木材、ゴム
等を適宜使用することができる。また、表面保護
材１６を透明又は半透明の材料を使用し、補強部
材１４との接着面に商品名等のデザインを施し
て、外側からそのデザインが見えるようにしても
よい。更に、側面保護材１８として発泡プラスチ
ツク等の比較的軟質の軽量材を使用する場合に
は、割子の横方向に最も突出する位置（側面の衝
撃力を最も受け易い位置）に、例えば硬質木材等
の硬質材２４を設けることもできる。 FIG. 2 is a cross-sectional view showing a schematic structure of the warp 12 of the bamboo sword of the present invention. A surface protection material 16, a side surface protection material 18, and a back surface material 20 are provided. The box-shaped reinforcing member has a substantially rectangular cross-sectional shape on both its inner and outer surfaces. In addition, a region 22 surrounded by the reinforcing member 14
is provided with a core made of a fibrous material having a configuration as described below. The surface protection material 16, side protection material 18, and back surface material 20 are not directly related to the present invention, but from the viewpoint of strength and lightness, various plastics, wood, rubber, etc. may be used as appropriate. can. Alternatively, the surface protection material 16 may be made of a transparent or translucent material, and a design such as a product name may be applied to the adhesive surface with the reinforcing member 14 so that the design can be seen from the outside. Furthermore, if a relatively soft lightweight material such as foamed plastic is used as the side protection material 18, for example, a piece of hard wood may be used at the position where the splitter protrudes most in the lateral direction (the position where it is most likely to receive the impact force from the side). It is also possible to provide a hard material 24 such as the like.
第３図のａ，ｂは、本発明の特徴であるボツク
ス状補強部材１４、およびこの補強部材１４によ
つて囲まれる領域２２（第２図）内に設けられる
芯体２６の各種構成例を示すものである。補強部
材１４は、軽量で引張強度に優れた材料、例え
ば、繊維強化プラスチツク（FRP）、軽量金属の
シート状物で作ることができるが、割子の保護材
１６，１８，２０との接着性、成形時の容易性等
から、カーボン繊維、ガラス繊維等のFRPとす
るのがよい。芯体２６は、木材、竹、繊維強化プ
ラスチツク（FRP）等の繊維質材料からなる。 FIGS. 3a and 3b show various configuration examples of the box-shaped reinforcing member 14, which is a feature of the present invention, and the core body 26 provided within the region 22 (FIG. 2) surrounded by this reinforcing member 14. It shows. The reinforcing member 14 can be made of a material that is lightweight and has excellent tensile strength, such as fiber-reinforced plastic (FRP) or a lightweight metal sheet. From the viewpoint of ease of molding, etc., it is preferable to use FRP such as carbon fiber or glass fiber. The core body 26 is made of a fibrous material such as wood, bamboo, or fiber reinforced plastic (FRP).
第３図ａは、補強部材１４に囲まれる領域２２
内の全域に亘つて繊維質材料（例えば、木材、
竹、FRPなど）の芯体２６が存在するものであ
る。芯体２６の繊維２８は、割子の幅方向に延び
ている。第３図ｂは、補強部材１４で囲まれる領
域２２内の一部に、割子の幅方向に繊維が延びて
いる繊維質材料の芯体２６が存在し、同時に領域
２２内の他部には割子の幅方向以外の方向に繊維
が延びている繊維質材料又は繊維質材料以外の材
料３０が存在する例を示すものである。繊維質材
料以外の材料３０として、例えば低倍率発泡プラ
スチツク等の軽量材を使用することにより、ボツ
クス状補強部材１４との接着性を高めることがで
き、これにより割子の側面の耐衝撃性を一層高め
ることができる。尚、割子の各接着界面には不織
布、ゴムの薄膜、紙等を介在することによつて、
強固な接着力を得るようにすることができる。 FIG. 3a shows a region 22 surrounded by the reinforcing member 14.
fibrous materials (e.g. wood,
There is a core body 26 made of bamboo, FRP, etc.). The fibers 28 of the core body 26 extend in the width direction of the splitter. FIG. 3b shows that a core body 26 made of a fibrous material with fibers extending in the width direction of the splitter exists in a part of the region 22 surrounded by the reinforcing member 14, and at the same time, a core body 26 of a fibrous material having fibers extending in the width direction of the splitter exists in the other part of the region 22. This shows an example in which there is a fibrous material whose fibers extend in a direction other than the width direction of the splitter or a material 30 other than the fibrous material. By using a lightweight material such as low-magnification foamed plastic as the material 30 other than the fibrous material, it is possible to improve the adhesion with the box-shaped reinforcing member 14, thereby improving the impact resistance of the side surface of the splitter. It can be further improved. In addition, by interposing nonwoven fabric, rubber thin film, paper, etc. at each adhesive interface of the splitter,
It is possible to obtain strong adhesive force.
第４図のａ，ｂは、本発明の割子の縦断面を示
す概略図であり、芯体２６が割子１２の長さ方向
に沿つていかなる部分に設けられるかを示すもの
である。補強部材１４は、割子１２の曲げ剛性を
高めるために、割子１２の全長Ｌに亘つて設ける
のがよいが、場合によつては、特に頻度多く衝撃
が作用する割子の先端近くの一定長さｌの部分に
のみ設けてもよいし、必要個所以外の部分はボツ
クス状にしなくてもよい。また、第４図ａに示す
ように、補強部材１４を割子の全長Ｌに亘つて設
ける場合であつも、芯体２６のみを割子の先端近
くの一定長さｌの部分にのみ設けることにより、
割子１２の曲げ剛性を損ねることなく割子全体の
重量を軽減させることができる。更に、第４図ｂ
に示すように、割子１２の長さ方向に沿う数個所
に接着性の優れた材料３４を配置し、補強部材１
４および割子の外周を形成する表面保護材１６、
側面保護材１８および裏面材２０との接着力とを
高めるように構成することもできる。 4A and 4B are schematic diagrams showing longitudinal sections of the splitter of the present invention, and show where the core body 26 is provided along the length direction of the splitter 12. FIG. In order to increase the bending rigidity of the splitter 12, the reinforcing member 14 is preferably provided over the entire length L of the splitter 12, but in some cases, the reinforcing member 14 may be provided near the tip of the splitter where shocks are frequently applied. It may be provided only in a portion of a certain length l, and portions other than necessary portions may not be box-shaped. Furthermore, as shown in FIG. 4a, even when the reinforcing member 14 is provided over the entire length L of the splitter, the core body 26 must be provided only in a portion of a certain length l near the tip of the splitter. According to
The overall weight of the splitter 12 can be reduced without impairing the bending rigidity of the splitter 12. Furthermore, Fig. 4b
As shown in FIG.
4 and a surface protection material 16 forming the outer periphery of the splitter,
It can also be configured to increase the adhesive force with the side protection material 18 and the back material 20.
芯体２６として木材を使用する場合に、その繊
維が割子の幅方向に延在するように配置する場合
において、第５図ａに示すように、割子の年輪３
６がほぼ垂直方向（割子の高さ方向）に延びるよ
うに配置すれば、第５図ｂに示すような年輪３６
がほぼ水平方向（割子の長手方向）に延びるよう
に配置したものに比べ、割子の表面へ作用する衝
撃に対しても強いものとすることがきる。 When using wood as the core body 26 and arranging the fibers thereof to extend in the width direction of the wart, as shown in FIG. 5a, the growth rings 3 of the wart
If the tree rings 6 are arranged so as to extend almost vertically (in the height direction of the splitter), the tree rings 36 as shown in Fig. 5b will be formed.
It can also be made stronger against impacts acting on the surface of the splitter, compared to a case where the splitters are arranged so as to extend in a substantially horizontal direction (longitudinal direction of the splitter).
以上のように、本発明の割子１２は、芯体２６
の繊維が割子の幅方向に延在しているため、相手
方の竹刀による衝撃が割子の側面保護材１８に作
用する場合に、その衝撃力は芯体２６の繊維２８
によつて確実に受け止められ、このため、ボツク
ス状補強部材１４が変形することが阻止される。
これにより、側面保護材１８の凹みが大幅に緩和
され、ひいては、最も傷み易い側面保護材１８を
強化することができるものである。 As described above, the splitter 12 of the present invention has the core body 26
Since the fibers extend in the width direction of the wariko, when an impact from the opponent's shinai acts on the side protection material 18 of the wariko, the impact force is transmitted to the fibers 28 of the core body 26.
This prevents the box-shaped reinforcing member 14 from deforming.
As a result, the dents in the side protection material 18 are significantly alleviated, and in turn, the side protection material 18, which is most easily damaged, can be strengthened.
第１図は、竹刀の概要を示す斜視図である。第
２図は、本発明の割子の横断面図である。第３図
は、ボツクス状補強部材および該補強部材内に設
けられる芯体の各種構成を示すものである。第４
図は、割子の長手方向の構造を示す割子の縦断面
図である。第５図は、芯体として木材を使用した
場合の、年輪の方向が異なる場合の芯体の配置を
示すものである。
１４……ボツクス状補強部材、２６……繊維質
材料からなる芯体。
FIG. 1 is a perspective view showing an outline of a shinai. FIG. 2 is a cross-sectional view of the splitter of the present invention. FIG. 3 shows various configurations of a box-shaped reinforcing member and a core provided within the reinforcing member. Fourth
The figure is a longitudinal cross-sectional view of the splitter showing the structure in the longitudinal direction of the splitter. FIG. 5 shows the arrangement of the core when wood is used as the core and the directions of annual rings are different. 14... Box-shaped reinforcing member, 26... Core body made of fibrous material.
Claims (1)
を備えた複合材で形成されており、前記補強部材
の形状は、割子の横断面方向から見てボツクス状
をなしており、前記ボツクス状の補強部材で囲ま
れる領域内には繊維質材料の芯体が設けてあり、
該芯体の繊維は割子の幅方向に延びていることを
特徴とする竹刀の割子。1. The wariko that constitutes the shinai is made of a composite material that includes at least a reinforcing member, and the shape of the reinforcing member is box-like when viewed from the cross-sectional direction of the warizo, and the box-like shape is A core of fibrous material is provided within the area surrounded by the reinforcing member,
A shinai wariko characterized in that the fibers of the core extend in the width direction of the wariko.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12773884A JPS618070A (en) | 1984-06-21 | 1984-06-21 | Split core of bamboo sword |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12773884A JPS618070A (en) | 1984-06-21 | 1984-06-21 | Split core of bamboo sword |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS618070A JPS618070A (en) | 1986-01-14 |
| JPH0464714B2 true JPH0464714B2 (en) | 1992-10-15 |
Family
ID=14967455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12773884A Granted JPS618070A (en) | 1984-06-21 | 1984-06-21 | Split core of bamboo sword |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS618070A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6322959U (en) * | 1986-07-31 | 1988-02-15 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59230568A (en) * | 1983-06-13 | 1984-12-25 | 古賀 隆幸 | Bamboo sword for kendo |
-
1984
- 1984-06-21 JP JP12773884A patent/JPS618070A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59230568A (en) * | 1983-06-13 | 1984-12-25 | 古賀 隆幸 | Bamboo sword for kendo |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS618070A (en) | 1986-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20030057458A (en) | Hollow golf club head | |
| US5078396A (en) | Reinforced dual-blade hockey stick | |
| KR20010050385A (en) | Reinforced and lightweight motor-vehicle bonnet | |
| KR100215491B1 (en) | Rib reinforced integral guitar belly | |
| JP2594922Y2 (en) | Skis with non-rectangular cross section | |
| JPH0464714B2 (en) | ||
| JPH0464715B2 (en) | ||
| JPH0464716B2 (en) | ||
| JPH048932Y2 (en) | ||
| JPH0463713B2 (en) | ||
| JPH0463714B2 (en) | ||
| JPH048931Y2 (en) | ||
| JPH0423584Y2 (en) | ||
| JPH0467476B2 (en) | ||
| JPS618073A (en) | Split core of bamboo sword | |
| JPH0421555Y2 (en) | ||
| JPH0819634A (en) | Ski board | |
| KR101859210B1 (en) | Toe cap for strength | |
| JPH048930Y2 (en) | ||
| JPH0431090Y2 (en) | ||
| JPS6218772B2 (en) | ||
| JPH0140533Y2 (en) | ||
| JP2968967B2 (en) | Chopping board | |
| JPS63165021U (en) | ||
| JPH0418601Y2 (en) |