JP4183842B2 - fishing rod - Google Patents

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Publication number
JP4183842B2
JP4183842B2 JP12370699A JP12370699A JP4183842B2 JP 4183842 B2 JP4183842 B2 JP 4183842B2 JP 12370699 A JP12370699 A JP 12370699A JP 12370699 A JP12370699 A JP 12370699A JP 4183842 B2 JP4183842 B2 JP 4183842B2
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Japan
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prepreg
solid body
outer peripheral
peripheral surface
wound
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JP12370699A
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JP2000312547A (en
Inventor
孝行 月原
貴之 白記
淳 佐伯
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Shimano Inc
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Shimano Inc
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Description

【0001】
【発明の属する技術分野】
本発明は、中実状のソリッド体を竿先から竿元まであるいはその一部に備え、該ソリッド体にプリプレグが巻装されてなる釣竿に関するものである。
【0002】
【従来の技術】
近年、軽量化と曲げ剛性確保のために、釣竿の補強繊維としてカーボン繊維やガラス繊維等の強化繊維が使用されている。これらの強化繊維は、一般には、一定方向に引き揃えられて合成樹脂が含浸されてシート状のプリプレグとして使用され、このプリプレグから筒状の釣竿が形成されることが多い。
【0003】
その一方、例えば、竿全体若しくはその一部分を、前記強化繊維を竿軸方向に引き揃えて合成樹脂を含浸してなる中実状のソリッド体から構成し、該ソリッド体の外周面に前記プリプレグを巻装してソリッド体と一体化させることもある。
【0004】
かかる釣竿では、含浸された合成樹脂が一種の接着剤として機能することによってソリッド体の外周面にプリプレグが密着され、その密着は合成樹脂の強度によって維持される。
【0005】
【発明が解決しようとする課題】
しかるに、合成樹脂の強度は強化繊維のそれに比して極めて小さいため、ソリッド体からプリプレグが剥離するという問題が生じる場合があった。
特に、この剥離現象は、曲げの関係から、巻装されたプリプレグの竿先側端部において発生しやすいものであった。
【0006】
そこで本発明は、上記従来の問題点に鑑みてなされたものであり、その課題とするところは、ソリッド体に巻装されたプリプレグのソリッド体からの剥離を確実に防止することにある。
【0007】
【課題を解決するための手段】
本発明は、上記課題を解決すべくなされたものであり、本発明に係る竿は、中実状のソリッド体1を備え、該ソリッド体1の外周面1aにプリプレグ7が巻装されてなり、ソリッド体1及びプリプレグ7は、カーボン繊維やガラス繊維等の強化繊維に合成樹脂が含浸されて形成されてなる釣竿であって、前記プリプレグ7の竿先側端部7bの外周側には、該プリプレグ7とは別体のテープ状のプリプレグ8が更に巻装されてなり、前記更に巻装されたテープ状のプリプレグ(8)は、竿軸方向とは異なる方向に引き揃えられた強化繊維を有することを特徴とする。
【0008】
かかる釣竿にあっては、ソリッド体1の外周面1aに巻装されたプリプレグ7の竿先側端部7bの外周側に、該プリプレグ7とは別体のテープ状のプリプレグ8が更に巻装されてなるので、この更に巻装されたテープ状のプリプレグ8がその内側に位置するプリプレグ7を押さえつけることにより、ソリッド体1の外周面1aとプリプレグ7との密着性が確保される。
【0009】
また、ソリッド体の外周面に巻装されたプリプレグは、竿軸方向に引き揃えられた強化繊維を有することが多いため、周側に更に巻装されたテープ状のプリプレグ8を、竿軸方向と異なる方向の強化繊維を有するテープ状のプリプレグ8と、この竿軸方向と異なる方向の強化繊維によって内側のプリプレグ7がより一層確実にソリッド体1の外周面1aに密着した状態が維持される。
【0010】
また、ソリッド体1の外周面1aに複数のプリプレグを互いに重なり合うよう巻装する場合には、請求項記載の如く、少なくとも竿先側端部4bがソリッド体1の外周面1aに巻装されているプリプレグ4の外周側に、該プリプレグ4の竿先側端部4bとその竿先側のソリッド体1の外周面1aとを被覆するよう巻装されたプリプレグ5を有することにより、ソリッド体1の外周面1aに巻装されたプリプレグ4の竿先側端部4bの剥離が防止される。即ち、その外周側に巻装されたプリプレグ5が、内周側のソリッド体4より竿先側のソリッド体1の外周面1aに巻装されて密着してなるため、内周側のプリプレグ4の竿先側端部4bが外周側のプリプレグ5によって竿先側から押さえつけられ、内周側のプリプレグ4の竿先側端部4bのソリッド体1の外周面1aへの密着状態が維持される。
【0011】
特に、請求項記載の如く、外周側のプリプレグほどソリッド体1の外周面1aの竿先側を被覆するよう巻装されてなる複数のプリプレグ4,5,6,7を有すると、これら各々の外周側のプリプレグ5,6,7によってその内側のプリプレグ4,5,6の竿先側端部4b,5b,6bが被覆されてソリッド体1の外周面1aに押さえつけられてソリッド体1からの剥離が防止される。
【0012】
【発明の実施の形態】
以下、本発明に係る釣竿の一実施形態について、図1乃至図5を参酌しつつ、ハンドル部3に固定挿入する領域を除き、竿先から竿元まで中実状のソリッド体1が設けられ、該ソリッド体1の外周面1aにプリプレグが巻装されてなる釣竿について説明する。
【0013】
前記ソリッド体1は、竿先から竿元にかけて径が大きくなったテーパ状に形成されてなり、カーボン繊維を補強繊維として使用してなる。該カーボン繊維は一定方向に引き揃えられており、その方向は竿軸方向と略一致している。尚、該ソリッド体1は、カーボン繊維を長さ方向に集合したものに合成樹脂を含浸させて加圧加熱により硬化成形して形成したものである。ここで、カーボン繊維の弾性率は、略23ton/mm2以下であり、特に、略19ton/mm2以下が好ましく、本実施形態では、略15ton/mm2ものを使用している。また、前記合成樹脂としては不飽和ポリエステルを使用しているが、これに限定されない。また、ソリッド体1の合成樹脂の含浸量は、30乃至50重量%程度が好ましく、本実施形態では、43重量%である。
【0014】
そして、該ソリッド体1に複数のプリプレグが巻装されることによりプリプレグ層2が形成されてなる。尚、図1の如く、ソリッド体1の竿元側には、プリプレグ層2が設けられていない領域があるが、これは、ソリッド体1をハンドル部3に挿入固定するための領域である。従って、竿全体としては、ハンドル部3から先の領域の全長に亘ってプリプレグが巻装されてプリプレグ層2が形成されている。
【0015】
かかるプリプレグは、カーボン繊維を補強繊維としており、カーボン繊維を一定方向に引き揃えて合成樹脂を含浸させたシート状のものを、三角状、扇状、台形状、方形状等の所定の形状、あるいは所定幅の長尺状のテープ状等、所定の形状に裁断したものである。
【0016】
本実施形態においては、竿先側に向かって先細り形状(略三角形状)に裁断された四枚のプリプレグ4,5,6,7と、略一定幅に長尺状に裁断されたテープ状のプリプレグ8とを使用している。以下、具体的に説明する。
【0017】
まず、図3の如く、竿先側に向かって先細り形状(略三角形状)に形成された四枚のプリプレグ4,5,6,7がソリッド体1に互いに重なり合うよう巻装される。そのうち、内側の三枚4,5,6は、外周側のものほど竿軸方向の長さ(先細り側に向けた長さ)が長く、該三枚のプリプレグ4,5,6は、その竿元側端部4a,5a,6aが略揃えられて、ソリッド体1の竿先側を残すようにソリッド体1の軸方向の一部に巻装される。即ち、外周側のものほどソリッド体1の竿先側に長く巻装される。そして、三枚目のプリプレグ6の外周側に四枚目のプリプレグ7が巻装されるが、該四枚目のプリプレグ7は、三枚目のプリプレグ6の竿先側略半分と、その竿先側に露出しているソリッド体1の外周面1aとに巻装され、ソリッド体1の竿先側先端1bまで巻装される。このように合計四枚の略三角形状のプリプレグ4,5,6,7は、全て竿先側端部4b,5b,6b,7bがソリッド体1の外周面1aに巻装され、各々の内周側のプリプレグ4,5,6の竿先側端部4b,5b,6bを被覆すると共に、その竿先側に露出した状態のソリッド体1の外周面1aを被覆するよう巻装される。尚、略三角形状の四枚のプリプレグ4,5,6,7は、その幅が竿元側に向けて広くなっているので竿元側ほど巻回回数が多くなり、その結果、竿元側ほど巻装厚みが厚くなる。また、カーボン繊維の方向性についてはソリッド体1の軸方向と略一致している。
【0018】
そして、これら四枚のプリプレグ4,5,6,7の外周側に全長に亘って前記テープ状のプリプレグ8が巻装されてなる。該テープ状プリプレグ8は、四枚のプリプレグ4,5,6,7の巻回方向とは逆方向に巻回されており、図4の如く、竿軸方向に巻回位置を徐々に移動させつつ螺旋状に巻回される。尚、テープ状のプリプレグ8は、その長手方向にカーボン繊維が引き揃えられており、巻装状態において、カーボン繊維の方向が略周方向となる。このテープ状のプリプレグ8においても、竿元側ほど螺旋ピッチを狭くする等により、竿元側の巻装厚みが厚くなるよう、つまり竿元側ほどテーパの勾配がきつくなるようにしている。
【0019】
このように本実施形態では複数のプリプレグを巻装させてなるが、その結果形成されるプリプレグ層2は、略三角形状のプリプレグ4,5,6,7の巻装による第一プリプレグ層2aと、テープ状のプリプレグ8の巻装による第二プリプレグ層2bとから構成される。そして、プリプレグ層2とソリッド体1との径方向の寸法関係を具体的に説明すると、図2のようになる。まず、竿先において、ソリッド体1の径D1が約1.8mm、第一プリプレグ層2aの外径D2が約2.2乃至2.6mm、第二プリプレグ層2bの外径D3が2.4乃至2.8mmとなっている。プリプレグ層2の竿元では、ソリッド体1の径D1が約7.7mm、第一プリプレグ層2aの外径D2が約11.6乃至14.6mm、第二プリプレグ層2bの外径D3が12乃至15mmとなっている。
【0020】
また、プリプレグのカーボン繊維の弾性率については、略三角形状のプリプレグ4,5,6,7のそれが略17ton/mm2で、テープ状のプリプレグ8のそれが略24ton/mm2である。尚、略三角形状のプリプレグ4,5,6,7は全て、弾性率の異なる二種類のカーボン繊維が混合されたもの、具体的には、11.4ton/mm2と23.9ton/mm2との混合であって全体としての弾性率が17.1ton/mm2である。また、プリプレグについても合成樹脂は特に限定されず、その含浸量も30乃至50重量%が好ましいが、本実施形態ではエポキシ樹脂を採用し、その含浸量を37重量%としている。
【0021】
以上のように複数のプリプレグが巻装された状態を模式的に示すと図5のようになる。即ち、一枚目のプリプレグ4は全長に亘ってソリッド体1の外周面1aに巻装されているが、二枚目から四枚目のプリプレグ5,6,7は、竿先側のみがソリッド体1の外周面1aに巻装されている。何れにしても、略三角形状の四枚のプリプレグ4,5,6,7は、各々の竿先側端部4b,5b,6b,7bがソリッド体1の外周面1aに巻装され、その外周側には他のプリプレグ5,6,7,8が巻装された状態にある。しかも、二枚目から四枚目のプリプレグ5,6,7は、それぞれ一枚目から三枚目のプリプレグ4,5,6の竿先側端部4b,5b,6bとその竿先側のソリッド体1の外周面1aとを被覆する関係にある。そして、四枚目のプリプレグ7の竿先側端部7bの外周側には、テープ状のプリプレグ8が巻装されている。
【0022】
従って、少なくとも竿先側端部4b,5b,6b,7bがソリッド体1の外周面1aに巻装された状態にある四枚のプリプレグ4,5,6,7は、何れもその外周側のプリプレグ5,6,7,8によって竿先側端部4b,5b,6b,7bが押さえつけられており、各竿先側端部4b,5b,6b,7bのソリッド体1の外周面1aからの剥離が防止される。しかも、一枚目から三枚目のプリプレグ4,5,6の竿先側端部4b,5b,6bは、それぞれ二枚目から四枚目のプリプレグ5,6,7がソリッド体1の外周面1aの竿先側に密着しているため、単に外周側に別体のプリプレグが巻装された場合に比してより一層確実に剥離が防止される。また、四枚目のプリプレグ7の竿先側端部7bについては、テープ状プリプレグ8のカーボン繊維がその長手方向に沿って引き揃えられ、巻装状態においてカーボン繊維の方向性が略周方向で、四枚目のプリプレグ7のカーボン繊維とは異なる方向であるため、略周方向のカーボン繊維の剛性によって、四枚目のプリプレグ7の竿先側端部7bのソリッド体1からの剥離がより一層確実に防止されるのである。
【0023】
更に、カーボン繊維の弾性率を、ソリッド体1、略三角形状のプリプレグ4,5,6,7、テープ状のプリプレグ8の順に大きくし且つ、ソリッド体1とプリプレグ層2との間の弾性率の差を小さくしてなるので、ソリッド体1とプリプレグ層2との境界面(含浸された合成樹脂からなる樹脂層)で生じやすい応力集中の発生を防止でき、プリプレグの剥離防止効果がより一層高まる。
【0024】
このように、竿を単一素材で構成せずに弾性率の異なる複数素材から構成する場合には、その境界面での応力集中を防止することが重要となる。従って、ソリッド体1とプリプレグ層2との境界面における応力集中の発生を確実に防止するために、略三角形状のプリプレグ4,5,6,7のカーボン繊維の弾性率をソリッド体1とほぼ同じにすることも可能である。即ち、例えば、ソリッド体1のカーボン繊維の弾性率を略15ton/mm2とする場合に、その外周面1aに巻装する略三角形状のプリプレグ4,5,6,7におけるカーボン繊維の弾性率も略15ton/mm2とすることで、応力集中を確実に防止でき、プリプレグの剥離防止効果も更に高まる。この場合、ソリッド体1と略三角形状のプリプレグ4,5,6,7の弾性率が同じであるが、プリプレグ層2によって竿の調子の調節が容易となり、ソリッド体1の製造が容易になるので、ソリッド体1の径を第一プリプレグ層2a分だけ大きくする場合よりも有利である。
【0025】
尚、上記実施形態において、テープ状のプリプレグ8のカーボン繊維を全てその長手方向に引き揃える以外にも、幅方向に引き揃えられたカーボン繊維を含有させてもよい。何れにしても、巻装状態において竿軸方向とは異なる方向に引き揃えられたカーボン繊維を有していれば、その内周側に位置するプリプレグ7のソリッド体1の外周面1aからの剥離を防止する効果に優れる。
【0026】
その他、プリプレグの数やその形状等も適宜設計変更可能であり、また、上記実施形態ではソリッド体1及びプリプレグ4,5,6,7,8の双方にカーボン繊維を用いてなるが、カーボン繊維以外の例えばガラス繊維等の強化繊維を双方若しくは何れか一方に用いることも可能である。
【0027】
また、竿先から竿元までソリッド体1の外周面にプリプレグを巻装したもの以外にも、例えば、竿元のみプリプレグを巻装したものであってもよい。その他、プリプレグが巻装されたソリッド体が例えば竿先にのみ設けられ、竿元側が中空状である竿とすることも可能である。特に、穂先部は径が極小となるうえに曲がりも大きいので、ソリッド体にプリプレグが巻装された本発明の構成を穂先部に用いた場合にはその効果が大きい。
【0028】
更に、ソリッド体からのプリプレグの剥離を防止する手段としては、上述したもの以外にも、いくつか考えられる。例えば、ソリッド体の外周面にまずテープ状のプリプレグ(例えば、その長手方向にカーボン繊維が引き揃えられたもの)を螺旋状に巻回し、その外周側に上述のような略三角形状のプリプレグ(例えば、カーボン繊維が竿軸方向に沿って引き揃えられたもの)を巻装する構成がある。この場合、略三角形状のプリプレグとソリッド体の外周面との間に、螺旋状に巻装されたテープ状のプリプレグが介在し、該テープ状のプリプレグと略三角形状のプリプレグとが一体化されることで略三角形状のプリプレグの剥離が防止される。その他にも、ソリッド体に多層状態に巻装された複数のプリプレグのうち、最内周のプリプレグ(少なくとも竿先側端部がソリッド体の外周面に巻装されたプリプレグ)のみ、強化繊維の一部が周方向に引き揃えられているものを用い、それ以外のプリプレグの強化繊維は、略竿軸方向にのみ引き揃えられてなるものを用いることによっても、同様に最内周のプリプレグのソリッド体からの剥離が防止できる。即ち、複数のプリプレグをソリッド体に多層状態に巻装する場合、最内周のプリプレグが略周方向に引き揃えられた強化繊維を有していれば、その最内周のプリプレグのソリッド体からの剥離が防止される。
【0029】
【発明の効果】
以上のように本発明に係る釣竿にあっては、ソリッド体の外周面に巻装されたプリプレグの竿先側端部の外周側に更に別体のプリプレグを巻装することにより、ソリッド体の外周面に巻装されたプリプレグの竿先側端部のソリッド体からの剥離が確実に防止される。
【0030】
また、ソリッド体の外周面に複数のプリプレグが互いに重なり合うよう巻装され、ソリッド体の外周面に巻装されたプリプレグの外周側に、該プリプレグの竿先側端部とその竿先側のソリッド体の外周面とを被覆するよう巻装されたプリプレグを有する場合には、竿先側端部とその竿先側のソリッド体の外周面とを被覆するプリプレグによって、その内周側に位置するプリプレグの竿先側端部の剥離が確実に防止される。
【図面の簡単な説明】
【図1】本発明の一実施形態における釣竿の要部を示す概略縦断面図。
【図2】同横断面図。
【図3】同実施形態の釣竿の製造過程を示す概略図。
【図4】同実施形態の釣竿の製造過程を示す概略図。
【図5】同実施形態の釣竿の断面形状を模式的に示す拡大縦断面図。
【符号の説明】
1…ソリッド体、1a…外周面、4,5,6,7,8…プリプレグ、4b,5b,6b,7b…竿先側端部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fishing rod in which a solid body is provided from the tip of the heel to the base of the heel or a part thereof, and a prepreg is wound around the solid body.
[0002]
[Prior art]
In recent years, reinforcing fibers such as carbon fibers and glass fibers have been used as reinforcing fibers for fishing rods in order to reduce weight and ensure bending rigidity. In general, these reinforcing fibers are used in the form of a sheet-like prepreg which is aligned in a certain direction and impregnated with a synthetic resin, and a tubular fishing rod is often formed from the prepreg.
[0003]
On the other hand, for example, the entire ridge or a part thereof is formed of a solid solid body in which the reinforcing fibers are aligned in the axial direction and impregnated with a synthetic resin, and the prepreg is wound around the outer peripheral surface of the solid body. It may be integrated with the solid body.
[0004]
In such a fishing rod, the impregnated synthetic resin functions as a kind of adhesive, whereby the prepreg is brought into close contact with the outer peripheral surface of the solid body, and the close contact is maintained by the strength of the synthetic resin.
[0005]
[Problems to be solved by the invention]
However, since the strength of the synthetic resin is extremely small as compared with that of the reinforcing fiber, there has been a problem that the prepreg is peeled off from the solid body.
In particular, this peeling phenomenon is likely to occur at the heel side end of the wound prepreg because of bending.
[0006]
Therefore, the present invention has been made in view of the above-described conventional problems, and the object is to reliably prevent the prepreg wound around the solid body from being peeled off from the solid body.
[0007]
[Means for Solving the Problems]
The present invention has been made to solve the above-mentioned problems, and the bag according to the present invention comprises a solid solid body 1, and a prepreg 7 is wound around the outer peripheral surface 1 a of the solid body 1. The solid body 1 and the prepreg 7 are fishing rods formed by impregnating a reinforcing fiber such as carbon fiber or glass fiber with a synthetic resin, and on the outer peripheral side of the tip side end portion 7b of the prepreg 7, prepreg 7 Ri name is tape-like prepreg 8 is further wound separately from the said further wound tape-like prepreg (8), the reinforcing fibers to the rod axis is aligned in a different direction and wherein the Rukoto to have a.
[0008]
In such a fishing rod, a tape-shaped prepreg 8 separate from the prepreg 7 is further wound on the outer peripheral side of the heel side end portion 7 b of the prepreg 7 wound around the outer peripheral surface 1 a of the solid body 1. Therefore, the tape-like prepreg 8 wound further presses the prepreg 7 positioned on the inside thereof, so that the adhesion between the outer peripheral surface 1a of the solid body 1 and the prepreg 7 is ensured.
[0009]
Further, wound prepreg on the outer peripheral surface of the solid body, because often have a reinforcing fiber that is aligned in the rod axis direction, a tape-like prepreg 8 is further wound on the outer circumferential side, rod shaft a tape-like prepreg 8 having different directions of the reinforcing fibers with a direction, a state where the by different directions of the reinforcing fiber the rod axis direction inside the prepreg 7 in close contact with the more reliably the outer peripheral surface 1a of the solid body 1 is maintained Is done.
[0010]
Further, when a plurality of prepregs are wound around the outer peripheral surface 1a of the solid body 1 so as to overlap each other, at least the tip side end portion 4b is wound around the outer peripheral surface 1a of the solid body 1 as described in claim 2. The prepreg 4 has a prepreg 5 wound on the outer peripheral side of the prepreg 4 so as to cover the heel-side end 4b of the prepreg 4 and the outer peripheral surface 1a of the solid body 1 on the heel side. The peeling of the tip side end portion 4b of the prepreg 4 wound around the outer peripheral surface 1a of the 1 is prevented. That is, since the prepreg 5 wound around the outer peripheral side is wound and closely adhered to the outer peripheral surface 1a of the solid body 1 on the tip side from the solid body 4 on the inner peripheral side, the prepreg 4 on the inner peripheral side is formed. The tip end 4b of the tip is pressed from the tip side by the prepreg 5 on the outer peripheral side, and the contact state of the tip end 4b of the prepreg 4 on the inner peripheral side to the outer peripheral surface 1a of the solid body 1 is maintained. .
[0011]
In particular, as described in claim 3 , when a plurality of prepregs 4, 5, 6, and 7 are wound so as to cover the heel side of the outer peripheral surface 1a of the solid body 1 as the prepreg on the outer peripheral side, The tip side ends 4b, 5b, 6b of the inner prepregs 4, 5 and 6 are covered with the prepregs 5, 6 and 7 on the outer peripheral side thereof and pressed against the outer peripheral surface 1a of the solid body 1 so that the solid body 1 Is prevented from peeling.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, with respect to one embodiment of the fishing rod according to the present invention, a solid solid body 1 is provided from the tip of the rod to the base of the rod except for the region to be fixedly inserted into the handle portion 3 with reference to FIGS. A fishing rod in which a prepreg is wound around the outer peripheral surface 1a of the solid body 1 will be described.
[0013]
The solid body 1 is formed in a tapered shape having a diameter that increases from the tip of the heel to the base of the heel and uses carbon fibers as reinforcing fibers. The carbon fibers are aligned in a certain direction, and the direction substantially coincides with the axial direction. The solid body 1 is formed by impregnating a synthetic resin into a collection of carbon fibers in the length direction, followed by curing by pressure and heating. Here, the elastic modulus of the carbon fiber is approximately 23 ton / mm 2 or less, and particularly preferably approximately 19 ton / mm 2 or less. In this embodiment, approximately 15 ton / mm 2 is used. Moreover, although unsaturated polyester is used as said synthetic resin, it is not limited to this. Further, the impregnation amount of the synthetic resin of the solid body 1 is preferably about 30 to 50% by weight, and in this embodiment, it is 43% by weight.
[0014]
A prepreg layer 2 is formed by winding a plurality of prepregs around the solid body 1. As shown in FIG. 1, there is an area where the prepreg layer 2 is not provided on the base side of the solid body 1, which is an area for inserting and fixing the solid body 1 to the handle portion 3. Therefore, as a whole ridge, the prepreg layer 2 is formed by winding the prepreg over the entire length of the region beyond the handle portion 3.
[0015]
Such a prepreg uses carbon fibers as reinforcing fibers, and a sheet-like one in which carbon fibers are aligned in a certain direction and impregnated with a synthetic resin is a predetermined shape such as a triangular shape, a fan shape, a trapezoidal shape, a rectangular shape, or the like. The tape is cut into a predetermined shape such as a long tape with a predetermined width.
[0016]
In the present embodiment, four prepregs 4, 5, 6, and 7 that are cut into a tapered shape (substantially triangular) toward the heel side, and a tape-like piece that is cut into a long shape with a substantially constant width. The prepreg 8 is used. This will be specifically described below.
[0017]
First, as shown in FIG. 3, four prepregs 4, 5, 6, 7 formed in a tapered shape (substantially triangular) toward the heel side are wound around the solid body 1 so as to overlap each other. Among them, the inner three sheets 4, 5, 6 have a longer length in the axial direction (length toward the taper side) toward the outer peripheral side, and the three prepregs 4, 5, 6 are The former side end portions 4a, 5a, 6a are substantially aligned and wound around a part of the solid body 1 in the axial direction so as to leave the tip side of the solid body 1. That is, the outer peripheral side is wound longer on the tip side of the solid body 1. Then, the fourth prepreg 7 is wound around the outer periphery of the third prepreg 6, and the fourth prepreg 7 is substantially half of the tip side of the third prepreg 6 and its heel. The solid body 1 is wound around the outer peripheral surface 1a of the solid body 1 exposed to the front side, and is wound up to the tip side 1b of the solid body 1. In this way, the total of four substantially triangular prepregs 4, 5, 6 and 7 are all wound on the outer peripheral surface 1a of the solid body 1 at the tip end portions 4b, 5b, 6b and 7b. It winds so that the tip side edge part 4b, 5b, 6b of the prepreg 4,5,6 of a circumference side may be coat | covered, and the outer peripheral surface 1a of the solid body 1 of the state exposed to the tip side may be coat | covered. The four prepregs 4, 5, 6, 7 having a substantially triangular shape have a wider width toward the base side, so that the number of windings increases toward the base side. The winding thickness increases. Further, the directionality of the carbon fibers is substantially the same as the axial direction of the solid body 1.
[0018]
The tape-shaped prepreg 8 is wound around the entire outer circumference of these four prepregs 4, 5, 6, and 7. The tape-shaped prepreg 8 is wound in a direction opposite to the winding direction of the four prepregs 4, 5, 6 and 7, and the winding position is gradually moved in the axial direction as shown in FIG. While being spirally wound. The tape-shaped prepreg 8 has carbon fibers aligned in the longitudinal direction thereof, and the direction of the carbon fibers is substantially the circumferential direction in the wound state. Also in this tape-shaped prepreg 8, the winding pitch on the heel side is increased, that is, the taper slope is tightened toward the heel side by narrowing the helical pitch toward the heel side.
[0019]
As described above, in the present embodiment, a plurality of prepregs are wound. As a result, the prepreg layer 2 formed as a result is the first prepreg layer 2a formed by winding the substantially triangular prepregs 4, 5, 6, and 7. The second prepreg layer 2b is formed by winding a tape-shaped prepreg 8. The dimensional relationship between the prepreg layer 2 and the solid body 1 in the radial direction will be specifically described as shown in FIG. First, at the tip, the diameter D1 of the solid body 1 is about 1.8 mm, the outer diameter D2 of the first prepreg layer 2a is about 2.2 to 2.6 mm, and the outer diameter D3 of the second prepreg layer 2b is 2.4. Thru 2.8 mm. At the base of the prepreg layer 2, the diameter D1 of the solid body 1 is about 7.7 mm, the outer diameter D2 of the first prepreg layer 2a is about 11.6 to 14.6 mm, and the outer diameter D3 of the second prepreg layer 2b is 12. Or 15 mm.
[0020]
Also, the elastic modulus of a prepreg of carbon fiber, is that of substantially triangular prepreg 4,5,6,7 substantially 17ton / mm 2, that of tape-like prepreg 8 is approximately 24 ton / mm 2. The substantially triangular prepregs 4, 5, 6, and 7 are all mixed with two types of carbon fibers having different elastic moduli, specifically, 11.4 ton / mm 2 and 23.9 ton / mm 2. And the overall modulus of elasticity is 17.1 ton / mm 2 . The synthetic resin for the prepreg is not particularly limited, and the impregnation amount is preferably 30 to 50% by weight. In this embodiment, an epoxy resin is used, and the impregnation amount is 37% by weight.
[0021]
FIG. 5 schematically shows a state in which a plurality of prepregs are wound as described above. That is, the first prepreg 4 is wound around the outer peripheral surface 1a of the solid body 1 over its entire length, but the second to fourth prepregs 5, 6, and 7 are solid only on the tip side. It is wound around the outer peripheral surface 1 a of the body 1. In any case, the four prepregs 4, 5, 6 and 7 having a substantially triangular shape are wound on the outer peripheral surface 1a of the solid body 1 at the tip side ends 4b, 5b, 6b and 7b. Other prepregs 5, 6, 7, and 8 are wound on the outer peripheral side. Moreover, the second to fourth prepregs 5, 6, 7 are respectively provided on the tip side ends 4 b, 5 b, 6 b of the first to third prepregs 4, 5, 6 and the tip side thereof. The outer peripheral surface 1a of the solid body 1 is covered. A tape-shaped prepreg 8 is wound around the outer peripheral side of the tip side end portion 7 b of the fourth prepreg 7.
[0022]
Therefore, each of the four prepregs 4, 5, 6, and 7 in which at least the tip end portions 4b, 5b, 6b, and 7b are wound around the outer peripheral surface 1a of the solid body 1 are on the outer peripheral side. The heel side ends 4b, 5b, 6b, and 7b are pressed by the prepregs 5, 6, 7, and 8, and the heel side ends 4b, 5b, 6b, and 7b from the outer peripheral surface 1a of the solid body 1 are pressed. Peeling is prevented. In addition, the tip side ends 4b, 5b, 6b of the first to third prepregs 4, 5 and 6 are the outer periphery of the solid body 1 from the second to fourth prepregs 5, 6 and 7, respectively. Since it is in close contact with the heel side of the surface 1a, peeling can be prevented more reliably than when a separate prepreg is wound around the outer peripheral side. Moreover, about the tip side edge part 7b of the 4th prepreg 7, the carbon fiber of the tape-shaped prepreg 8 is aligned along the longitudinal direction, and the directionality of a carbon fiber is a substantially circumferential direction in the winding state. Since the carbon fiber of the fourth prepreg 7 is in a different direction, the rigidity of the carbon fiber in the substantially circumferential direction causes the tip side end portion 7b of the fourth prepreg 7 to peel off from the solid body 1 more. It is more reliably prevented.
[0023]
Furthermore, the elastic modulus of the carbon fiber is increased in the order of the solid body 1, the substantially triangular prepregs 4, 5, 6, 7 and the tape-shaped prepreg 8, and the elastic modulus between the solid body 1 and the prepreg layer 2 is increased. Therefore, the stress concentration that tends to occur at the boundary surface (resin layer made of impregnated synthetic resin) between the solid body 1 and the prepreg layer 2 can be prevented, and the effect of preventing the prepreg from peeling off can be further improved. Rise.
[0024]
As described above, when the ridge is not formed of a single material but is formed of a plurality of materials having different elastic moduli, it is important to prevent stress concentration at the boundary surface. Therefore, in order to reliably prevent the occurrence of stress concentration at the boundary surface between the solid body 1 and the prepreg layer 2, the elastic modulus of the carbon fibers of the substantially triangular prepregs 4, 5, 6, 7 is almost equal to that of the solid body 1. It can be the same. That is, for example, when the elastic modulus of the carbon fiber of the solid body 1 is about 15 ton / mm 2 , the elastic modulus of the carbon fiber in the substantially triangular prepregs 4, 5, 6 and 7 wound around the outer peripheral surface 1a. Is approximately 15 ton / mm 2 , stress concentration can be reliably prevented, and the effect of preventing the prepreg from peeling off is further enhanced. In this case, although the elastic modulus of the solid body 1 and the substantially triangular prepregs 4, 5, 6, and 7 is the same, the prepreg layer 2 makes it easy to adjust the tone of the cocoon and facilitates the production of the solid body 1. Therefore, it is more advantageous than the case where the diameter of the solid body 1 is increased by the amount corresponding to the first prepreg layer 2a.
[0025]
In addition, in the said embodiment, you may contain the carbon fiber aligned in the width direction other than aligning all the carbon fibers of the tape-shaped prepreg 8 in the longitudinal direction. In any case, if the carbon fiber is aligned in a direction different from the axial direction in the wound state, the prepreg 7 located on the inner peripheral side thereof is peeled from the outer peripheral surface 1a. Excellent in preventing
[0026]
In addition, the number of prepregs and the shape thereof can be changed as appropriate. In the above embodiment, carbon fibers are used for both the solid body 1 and the prepregs 4, 5, 6, 7, and 8. It is also possible to use other reinforcing fibers such as glass fibers for both or any one of them.
[0027]
In addition to the prepreg wound around the outer peripheral surface of the solid body 1 from the heel to the heel, for example, a prepreg wound only at the heel may be used. In addition, a solid body around which the prepreg is wound may be provided only at the tip of the heel, for example, and the heel side may be hollow. In particular, since the tip portion has a minimum diameter and a large bend, when the configuration of the present invention in which a prepreg is wound around a solid body is used for the tip portion, the effect is great.
[0028]
Further, in addition to the above-described means, several means can be considered as means for preventing the prepreg from peeling off from the solid body. For example, a tape-shaped prepreg (for example, a carbon fiber aligned in the longitudinal direction) is first spirally wound around the outer peripheral surface of a solid body, and the substantially triangular prepreg as described above ( For example, there is a configuration in which carbon fibers are aligned along the vertical axis direction). In this case, a tape-shaped prepreg wound in a spiral is interposed between the substantially triangular prepreg and the outer peripheral surface of the solid body, and the tape-shaped prepreg and the substantially triangular prepreg are integrated. By this, peeling of the substantially triangular prepreg is prevented. In addition, among a plurality of prepregs wound in a solid state on a solid body, only the innermost prepreg (a prepreg having at least a tip side end wound on the outer peripheral surface of the solid body) is made of a reinforcing fiber. Similarly, by using a part of the prepreg that is aligned in the circumferential direction and the other reinforcing fibers of the prepreg being aligned only in the substantially axial direction, the innermost prepreg is similarly used. Detachment from the solid body can be prevented. That is, when a plurality of prepregs are wound around a solid body in a multilayered state, if the innermost prepreg has reinforcing fibers aligned substantially in the circumferential direction, the solid body of the innermost prepreg Is prevented from peeling.
[0029]
【The invention's effect】
As described above, in the fishing rod according to the present invention, a separate prepreg is wound around the outer peripheral side of the tip side end portion of the prepreg wound around the outer peripheral surface of the solid body, thereby Peeling of the heel side end portion of the prepreg wound around the outer peripheral surface from the solid body is reliably prevented.
[0030]
Further, a plurality of prepregs are wound around the outer peripheral surface of the solid body so as to overlap each other, and the heel side end portion of the prepreg and the solid side of the heel side are arranged on the outer peripheral side of the prepreg wound around the outer peripheral surface of the solid body. In the case of having a prepreg wound so as to cover the outer peripheral surface of the body, it is positioned on the inner peripheral side by the prepreg that covers the tip side end portion and the outer peripheral surface of the solid side of the tip side. Peeling of the heel side of the prepreg is reliably prevented.
[Brief description of the drawings]
FIG. 1 is a schematic longitudinal sectional view showing a main part of a fishing rod in one embodiment of the present invention.
FIG. 2 is a cross-sectional view of the same.
FIG. 3 is a schematic view showing a manufacturing process of the fishing rod of the embodiment.
FIG. 4 is a schematic view showing a manufacturing process of the fishing rod of the embodiment.
FIG. 5 is an enlarged longitudinal sectional view schematically showing a sectional shape of the fishing rod of the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Solid body, 1a ... Outer peripheral surface, 4, 5, 6, 7, 8 ... Pre-preg, 4b, 5b, 6b, 7b ... Tip side edge part

Claims (3)

中実状のソリッド体(1)を備え、該ソリッド体(1)の外周面(1a)にプリプレグ(7)が巻装されてなり、ソリッド体(1)及びプリプレグ(7)は、カーボン繊維やガラス繊維等の強化繊維に合成樹脂が含浸されて形成されてなる釣竿であって、前記プリプレグ(7)の竿先側端部(7b)の外周側には、該プリプレグ(7)とは別体のテープ状のプリプレグ(8)が更に巻装されてなり、前記更に巻装されたテープ状のプリプレグ(8)は、竿軸方向とは異なる方向に引き揃えられた強化繊維を有することを特徴とする釣竿。The solid body (1) includes a solid body (1), and a prepreg (7) is wound around the outer peripheral surface (1a) of the solid body (1). The solid body (1) and the prepreg (7) are made of carbon fiber, A fishing rod formed by impregnating a reinforced fiber such as glass fiber with a synthetic resin, on the outer peripheral side of the tip side end (7b) of the prepreg (7), separate from the prepreg (7) Ri Na body tape-like prepreg (8) is further wound, the further wound tape-like prepreg (8), having a reinforcing fiber that is aligned in a direction different from the rod axis A fishing rod characterized by that. 中実状のソリッド体(1)を備え、該ソリッド体(1)の外周面(1a)に複数のプリプレグが互いに重なり合うよう巻装されてなり、ソリッド体(1)及びプリプレグは、カーボン繊維やガラス繊維等の強化繊維に合成樹脂が含浸されて形成されてなる釣竿であって、少なくとも竿先側端部(4b)が前記ソリッド体(1)の外周面(1a)に巻装されたプリプレグ(4)の外周側には、該プリプレグ(4)の竿先側端部(4b)とその竿先側のソリッド体(1)の外周面(1a)とを被覆するよう巻装されたプリプレグ(5)を有してなり、前記複数のプリプレグの外周側にテープ状のプリプレグ(8)が更に巻装されてなり、前記更に巻装されたテープ状のプリプレグ(8)は、竿軸方向とは異なる方向に引き揃えられた強化繊維を有することを特徴とする釣竿。A solid body (1) is provided, and a plurality of prepregs are wound around the outer peripheral surface (1a) of the solid body (1) so as to overlap each other. The solid body (1) and the prepreg are made of carbon fiber or glass. A fishing rod formed by impregnating a reinforcing resin such as a fiber with a synthetic resin, and a prepreg (at least a tip end (4b) wound around the outer peripheral surface (1a) of the solid body (1)) 4) on the outer peripheral side of the prepreg (4), the prepreg (4) wound so as to cover the end (4b) of the tip side and the outer peripheral surface (1a) of the solid body (1) on the tip side 5) Ri na have the tape-like prepreg on the outer peripheral side of the plurality of prepregs (8) is being further wound, the further wound tape-like prepreg (8), rod axis Has reinforcing fibers aligned in different directions Fishing rod according to claim Rukoto. 外周側のプリプレグほどソリッド体(1)の外周面(1a)の竿先側を被覆するよう巻装された複数のプリプレグ(4,5,6,7)を有してなる請求項記載の釣竿。As the outer peripheral side prepreg solid body (1) outer peripheral surface (1a) of the plurality which are wound so as to cover the rod tip side prepreg (4,5,6,7) comprising a second aspect of the fishing rod.
JP12370699A 1999-04-30 1999-04-30 fishing rod Expired - Lifetime JP4183842B2 (en)

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