JPH05260885A - Fishing rod - Google Patents
Fishing rodInfo
- Publication number
- JPH05260885A JPH05260885A JP4217833A JP21783392A JPH05260885A JP H05260885 A JPH05260885 A JP H05260885A JP 4217833 A JP4217833 A JP 4217833A JP 21783392 A JP21783392 A JP 21783392A JP H05260885 A JPH05260885 A JP H05260885A
- Authority
- JP
- Japan
- Prior art keywords
- prepreg
- synthetic resin
- layer
- rod
- fishing rod
- 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.)
- Granted
Links
Landscapes
- Golf Clubs (AREA)
- Fishing Rods (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、釣竿、詳しくは、高強
度繊維の引揃シートに合成樹脂を含浸漬させたプリプレ
グを引揃方向に巻装すべくした釣竿に関する。
【０００２】
【従来の技術】一般に、此種釣竿においては、前記プリ
プレグにおける合成樹脂の含浸量を少なくする程、釣竿
の曲げによる表層割れの度合が多くなる反面、重量の軽
減が行なえることになるが、通常前記合成樹脂の含浸量
を３５〜４０ｗｔ％とし、残りを前記繊維とした場合、
軽量で、かつ全体に所望の強度が得られるのである。従
って、従来の釣竿は、合成樹脂を３５〜４０ｗｔ％含浸
したプリプレグが用いられている。
【０００３】
【発明が解決しようとする課題】所が、とくに軽さを重
要視される釣竿の場合、以上のごとく合成樹脂を３５〜
４０含浸したプリプレグを用いたのでは、単位体積当り
の重量を所定値以下に小さくすることができなくて、全
体の重量を所望の軽さにできず、さりとて前記合成樹脂
の含浸量を少なくしたプリプレグを用いたのでは、表層
割れに対する強度を所定値以上に保つことができなく
て、釣竿各部の強度が全体に低下し、曲げ荷重により、
実際には先ず釣竿の内面側において、所謂表層割れが生
ずることになる問題があった。
【０００４】
【課題を解決するための手段】しかして、本発明は以上
の点に鑑み発明したもので、目的は、合成樹脂を３５〜
４０ｗｔ％含浸したプリプレグを用いて形成した従来の
釣竿に比べて軽量にできながら、軽量化できる割に曲げ
荷重による表層割れを少なくでき、自重に対する曲げ強
度を高めることができるようにする点にある。しかし
て、本発明は、釣竿の長さ方向と直交する方向に高強度
繊維を並び沿わせた引揃えシートに合成樹脂を含浸させ
た第１プリプレグと、釣竿の長さ方向に高強度繊維を並
び沿わせた引揃えシートに合成樹脂を含浸させた第２プ
リプレグとを用い、第１プリプレグを竿本体の最内層
に、また、第２プリプレグを竿本体の外側層に配設する
と共に、最内層の厚さを、外側層の厚さより薄くし、か
つ、第２プリプレグの単位体積当りの合成樹脂含浸量を
３３ｗｔ％以下とし、第１プリプレグの単位体積当りの
合成樹脂含浸量を、第２プリプレグより多く、かつ５０
ｗｔ％以下とし、もって、竿本体を所望の軽さにできな
がら、巻装時最内層に巻回する第１プリプレグの芯金に
対するなじみ性を向上できて、焼成時の脱芯時、最内層
の表面に割れができるのを防ぐことができ、しかも、外
側層に巻回する第２プリプレグに対するなじみ性を向上
できると共に、巻装後の加熱工程で、最内層のプリプレ
グに合成樹脂を流入作動させて竿本体を構成する各層の
引裂きに対する強度を全体に向上でき、更に内面側にお
ける表層割れを少なくでき、自重に対する曲げ強度を高
めることができるようにしたのである。なお、本発明に
おいて、「釣竿」とは、複数本の竿本体を継合してなる
継竿や引出竿の他１本竿も含むし、また、竿尻に継ぎ足
して使用する長さ調整竿も含む。更に、「竿本体」と
は、継竿や引出竿の場合、これら継竿や引出竿を構成す
る複数本の竿本体のうちの単一のものをいう、又、本発
明において、第２プリプレグの単位体積当りの合成樹脂
含浸量を３３ｗｔ％以下としたのは、３３ｗｔ％より多
くすると、３５〜４０ｗｔ％含浸した従来品に比べて軽
量化できないからであり、又、第１プリプレグの単位体
積当りの合成樹脂含浸量を、第２プリプレグより多く、
かつ、５０ｗｔ％以下としたのは、第２プリプレグより
少ないと、なじみ性が悪くなると共に、最内層のプリプ
レグから外側層のプリプレグへの流入作動量が少なくな
って、所望の強度を得ることができなくなり、又、５０
ｗｔ％より多くしてもなじみ性は変わらないし、重くな
るからである。
【０００５】
【実施例】以下、本発明釣竿の実施例を図面に基づいて
説明する。本発明は、基本的には、釣竿の長さ方向と直
交する方向に高強度繊維１１を並び沿わせたシートに合
成樹脂１２を含浸させた第１プリプレグ１を巻装して、
竿本体Ａの最内層Ａ1を形成すると共に、該最内層Ａ1の
外側に、釣竿の長さ方向に高強度繊維２１を並び沿わせ
た引揃えシートに合成樹脂２２を含浸させた第２プリプ
レグ２を巻装して、竿本体Ａの外側層Ａ2を形成し、か
つ、前記最内層Ａ1の厚さを、外側層Ａ2の厚さより薄
く、かつ、前記第１プリプレグ１の単位体積当りの合成
樹脂含浸量を、前記第２プリプレグ２に対し多量に、換
言すると、前記第２プリプレグにおける単位体積当りの
合成樹脂含浸量を、高強度繊維の直線巻きを可能に少量
に成したことである。図面に示したものは、前記竿本体
Ａの最内層Ａ1を前記第１プリプレグ１により一層状
に、また、前記外側層Ａ2を内層側から第２、第１、第
２第２及び第２プリプレグ２，１，２，２，２の順に５
層状に、合計６層状に形成したのであって、前記第２プ
リプレグ２は、高強度繊維２１として、軽くて高強度の
特性を有するカーボン繊維を用いて釣竿の長さ方向に引
揃え、かつ合成樹脂２２の含浸量を、巻回作業時、高強
度繊維２１を釣竿の長さ方向に直線巻き可能な少ない目
で３３ｗｔ％以下、好ましくは２５％乃至３３ｗｔ％の
値とし、かつ厚みを０．０５ｍｍ乃至０．１ｍｍと成す
のである。また、前記第１プリプレグ１は、前記高強度
繊維１１として、釣竿の周方向に引揃え、かつ、前記合
成樹脂１２の含浸量を、前記第２プリプレグ２に対し、
巻回時に剥離し難く、良好ななじみ性を発揮して巻回可
能な多い目で５０ｗｔ％以下、好ましくは４０ｗｔ％乃
至５０ｗｔ％の値とし、かつ厚みを、とくに薄い、例え
ば０．０１２ｍｍ乃至０．０３ｍｍの範囲内の値と成す
のである。そして、前記第１及び第２プリプレグ１，２
は、第１及び第２図のごとく、第１プリプレグ１の上に
第２プリプレグ２を巻回始端が揃うごとく重ねて、第１
プリプレグ１が内側になるごとく芯金３に巻回させるの
であって、巻回方向の長さ寸法については、第１プリプ
レグ１は、竿本体１における最内層Ａ1の一層分と、外
側層Ａ2のうつがわから第２層目の一層分との合計２層
分と成すのであり、また第２プリプレグ２は、展開時第
１プリプレグ１に重なり、巻回時外側層Ａ2の内側から
第２層目の一層分との合計２層分と成すのであり、また
第２プリプレグ２は、展開時第１プリプレグ１に重な
り、巻回時外側層Ａ2の内側から第１及び第３層目とな
る２層分と成すのであり、また第２プリプレグ２は、展
開時第１プリプレグ１に重なり、巻回時外側層Ａ2の内
側から第１及び第３層目となる２層分と、第１プリプレ
グ１の巻回終端から伸び出して外側層Ａ2の内側から第
５及び第６層目となる２層分との合計６層分と成すので
ある。しかして、前記第１及び第２プリプレグ１，２
は、巻回工程の前においては、圧着することなく、巻回
工程の前においては、圧着することなく、互いに摺動移
動自在にソフトに重ね合わせた状態と成し、巻回工程時
に互いに圧着させながら巻回するのが好ましく、斯くす
ることにより、巻回時に、相互に前もって圧着したもの
を巻回する場合のごとく、互いの圧着部が無理に摺動移
動させられ、しわ状となって空気が入り込み弱体化する
問題が解消され、各巻回層間の全体に亘って、隙間の全
くない理想的な密着状態となし得るのである。斯くのご
とく前記第１及び第２プリプレグ１，２を重ね合わせ、
前記芯金３にり巻回して、第３図のごとく、６層状の竿
本体Ａを形成すると共に、その外周に、補強用の細幅テ
ープ４を往復方向に螺旋状に巻回して加熱焼成するので
ある。この細幅テープ４は、前記第２プリプレグ２に用
いたカーボン繊維より細径で、引張強度３０ｋｇ以上の
カーボン繊維を用いて、該カーボン繊維の例えば３００
０本のものを幅寸法０．５ｍｍ〜１０ｍｍの細幅状に引
揃え、かつ合成樹脂の含浸量を、少ない目の例えば２０
〜３３ｗｔ％の範囲内の値とし、かつ厚みを、とくに薄
い、例えば、０．０１〜０．０５ｍｍの範囲内の値と成
すのである。
【０００６】
【作用】しかして、以上の構成において、前記竿本体Ａ
は、前記第１プリプレグ１に比べて厚肉で巻回数の多い
前記第２プリプレグ２が、全体積の大半を占めることに
なるが、この第２プリプレグ２の単位体積当りの合成樹
脂含浸量を、３３ｗｔ％以下としたので、全体に軽量に
できながら、しかも、第１プリプレグ１の単位体積当り
の合成樹脂含浸量を、第２プリプレグ２より多く、か
つ、５０ｗｔ％以下として、第２プリプレグ２との密着
性を良好としたので、加熱焼成の工程時に、第１プリプ
レグ１における合成樹脂の一部が、３３ｗｔ％以下の合
成樹脂を含浸させた第２プリプレグ２中に流入すること
ができ、最内層Ａ1及び外側層１2の引き裂きに対する強
度を向上できるのである。そして、前記竿本体１の最内
層Ａ1を、釣竿の長さ方向と直交する方向の高強度繊維
１１を並び沿わせるごとくなし、しかも、単位体積当り
の合成樹脂含浸量を、第２プリプレグより多く、かつ５
０ｗｔ％以下としているから、前記繊維方向と含浸樹脂
量との両者が相俟って釣竿の圧潰に基因する内面側の表
層割れを防止できると共に、成型後、芯金を軸方向に引
張って脱芯する場合に、前記最内層Ａ1の表面に割れが
生ずることも同時に防止できるのである。更に、第１プ
リプレグ１の単位体積当りの合成樹脂含浸量を、第２プ
リプレグ２より多く、かつ、５０ｗｔ％以下としている
から、前記芯金に対するなじみ性を良好にでき、前記あ
い１プリプレグ１を芯金に巻き付け易い上、第１プリプ
レグ１が芯金の軸心に対し捩れるのを防止できるし、外
側層Ａ2の第２プリプレグとのなじみ性も良好にできる
ので、第１プリプレグ１から成る最内層Ａ1と、第２プ
リプレグ２から成る外側層Ａ2との間を密着させられる
のである。因に前記した従来品と、本発明品との曲げ強
度、焼成後の自重、比強度（自重に対す曲げ強度）とを
実験して比較すると次表のような結果が得られた。
【０００７】
【表１】【０００８】但し、第１及び第２プリプレグは、何れも
２層、第１及び第２プリプレグの高強度繊維は、何れも
カーボン繊維である。尚、本発明品においては、第１プ
リプレグで形成する最内層の厚さを第２プリプレグで形
成する外側層の厚さより薄くしている。又、実験の方法
は、第５図に示している如く、１対の支持体Ｂ，Ｂ間に
竿本体Ａを支持し、この竿本体の中央部を１対の押圧子
Ｃ，Ｃで押圧して、竿本体Ａが破壊するまでの曲げ荷重
を測定した。尚、前記竿本体Ａは、前記各押圧子Ｃ，Ｃ
間の中央部を除く両端側の肉厚を厚くして補強し、又、
竿本体Ａの前記各支持体Ｂ及び各押圧子Ｃとの当接部に
は、補強用芯金Ｄ，Ｄを挿入して、前記各当接部のせん
断、圧潰による破壊を防止するようにした。以上のデー
タから明らかなように、第２プリプレグ２の単位体積当
りの合成樹脂含浸量を３３ｗｔ％以下として全体の自重
を軽くしたに拘らず、従来品に比べて自重に対する曲げ
強度、即ち、比強度を高めることができ、軽量で、しか
も、高強度の釣竿が得られるのである。また、前記竿本
体Ａにおける第２プリプレグ２から成る最外層の外周
に、前記細幅テープ４を巻装したので、釣竿の曲げ荷重
が加わったとき、最外層に表層割れが生ずるのも防止で
きるのである。また、前記したごとく第１及び第２プリ
プレグ１，２を重ねて全体で４巻回させるだけで竿本体
Ａを形成でき、竿本体Ａを簡単に形成できる。
【０００９】〔別実施例〕尚、以上の説明では、前記竿
本体Ａの外側層Ａ2は、内側から第２、第１、第２、第
２、第２プリプレグ２，１，２，２，２の順に５層状に
形成すべくしたが、層数及び第１、第２プリプレグ１，
２の配列組合わせは任意に設定できるのであって、例え
ば、第１及び第２プリプレグ１，２を全体に交互に配列
すべく成してもよいし、第２プリプレグ２のみにより形
成すべく成してもよく、また、外側層Ａ2の最外層を、
最内層Ａ1と同様に第１プリプレグ１により形成すべく
してもよく、この場合には、前記した細幅テープ４を用
いなくとも外面側の表層割れを防止できるし、細幅テー
プ４の多数回に亘る巻回作業がないので、全体に製造工
程を簡略にできる。
【００１０】
【発明の効果】以上のごとく本発明は、釣竿の長さ方向
と直交する方向に高強度繊維を並び沿わせたシートに合
成樹脂を含浸させた第１プリプレグを巻装して、竿本体
の最内層を形成し、該最内層の外側に、釣竿の長さ方向
に高強度繊維を並び沿わせた引揃えシートに合成樹脂を
含浸させた第２プリプレグを巻装して、前記竿本体の外
側層を形成すると共に、前記最内層の厚さを、外側層の
厚さより薄くし、かつ、前記第２プリプレグの単位体積
当りの合成樹脂含浸量を３３ｗｔ％以下とし、前記第１
プリプレグの単位体積当りの合成樹脂含浸量を、前記第
２プリプレグより多く、かつ、５０ｗｔ％以下としたか
ら、次の利点を有する釣竿が得られるのである。
最内層より厚さの厚い外側層を形成する第２プリプ
レグの単位体積当りの合成樹脂含浸量が、３３ｗｔ％以
下であるため、竿全体を軽量にできるのである。
しかも、竿本体の最内層を形成する第１プリプレグ
の繊維方向を、釣竿の長さ方向と直交する方向とし、し
かも単位体積当りの合成樹脂含浸量を、第２プリプレグ
より多く、かつ、５０ｗｔ％以下とすることにより、前
記第２プリプレグによる軽量化を阻害することなく、前
記繊維方向と含浸樹脂量との両者が相俟って釣竿圧潰に
基因する内面側の表層割れを防止できると共に、成形
後、芯金を軸方向に引張って脱芯する場合に、前記最内
層の表面に割れが生ずることも同時に防止できるのであ
る。
芯金に対する第１プリプレグのなじみ性を良好にで
き、前記第１プリプレグを芯金に巻き付け易い上、第１
プリプレグが芯金の軸心に対し捩れるのを防止できる
し、外側層の第２プリプレグとのなじみ性も良好にでき
るので、第１プリプレグから成る最ナイスと第２プリプ
レグから成る外側層との間を密着させられるし、また、
第２プリプレグの合成樹脂含浸量を３３ｗｔ％以下とす
ることができるから、その繊維方向を竿全体の長さ方向
に沿わせて巻装する直線巻きも容易にできるのである。
その上、第１プリプレグの単位体積当りの合成樹脂
含浸量を、第２プリプレグより多く、かつ、５０ｗｔ％
以下とすることにより、第１プリプレグと第２プリプレ
グとの密着性を良好にできるから、巻装後の加熱工程
で、単位体積当りの合成樹脂量を多くした第１プリプレ
グの合成樹脂の一部が第２プリプレグに流入することが
でき、最内層及び外側層の引き裂きに対する強度を向上
できるのである。従って、以上の〜により、竿全体
の自重に対する曲げ強度を高めることができるのであ
り、全体として軽量で、しかも強度の高い釣竿を形成で
きるのである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishing rod, more specifically, a prepreg in which a synthetic resin is dipped in an aligning sheet of high-strength fibers and wound in the aligning direction. About the fishing rod I made. Generally, in this type of fishing rod, the smaller the amount of synthetic resin impregnated in the prepreg, the greater the degree of surface layer cracking due to bending of the fishing rod, but the lighter the weight. However, when the impregnated amount of the synthetic resin is usually 35 to 40 wt% and the rest is the fiber,
It is lightweight and has the desired overall strength. Therefore, the conventional fishing rod uses a prepreg impregnated with 35 to 40 wt% of synthetic resin. However, in the case of fishing rods where lightness is particularly important, synthetic resin 35-35 is used as described above.
When the prepreg impregnated with 40 was used, the weight per unit volume could not be reduced to a predetermined value or less, and the total weight could not be reduced to a desired value, and the impregnated amount of the synthetic resin was reduced. By using a prepreg, the strength against surface cracking cannot be maintained at a predetermined value or more, the strength of each part of the fishing rod is lowered overall, and due to bending load,
Actually, first, there was a problem that so-called surface cracking occurred on the inner surface side of the fishing rod. SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the invention is to provide a synthetic resin containing 35 to 35 parts.
Although it can be made lighter than a conventional fishing rod formed by using a prepreg impregnated with 40 wt%, it is possible to reduce the surface layer cracks due to bending load while being lightweight, and to increase the bending strength against its own weight. .. Thus, the present invention provides a first prepreg in which a synthetic resin is impregnated in a aligning sheet in which high-strength fibers are arranged in a direction orthogonal to the longitudinal direction of the fishing rod, and high-strength fibers in the longitudinal direction of the fishing rod. By using a second prepreg impregnated with a synthetic resin on the aligned sheets arranged side by side, the first prepreg is arranged in the innermost layer of the rod body, and the second prepreg is arranged in the outer layer of the rod body. The inner layer is made thinner than the outer layer, the synthetic resin impregnation amount per unit volume of the second prepreg is 33 wt% or less, and the synthetic resin impregnation amount per unit volume of the first prepreg is More than prepreg and 50
It is possible to improve the conformability to the core metal of the first prepreg wound around the innermost layer during winding, while making the rod main body to a desired weight, and to make the innermost layer during decoreing during firing. It is possible to prevent cracks on the surface of the prepreg and to improve the conformability to the second prepreg wound on the outer layer, and at the heating step after winding, the synthetic resin flows into the innermost prepreg. By doing so, the strength of each layer constituting the rod main body against tearing can be improved as a whole, the surface layer cracks on the inner surface side can be reduced, and the bending strength against its own weight can be increased. In addition, in the present invention, the "fishing rod" includes a single rod in addition to a joint rod formed by joining a plurality of rod main bodies and a pull-out rod, and a length adjusting rod to be added to a rod butt and used. Including. Furthermore, in the case of a connecting rod or a drawing rod, the term "rod body" refers to a single one of a plurality of rod bodies forming the connecting rod or the drawing rod, and in the present invention, the second prepreg. The reason why the synthetic resin impregnation amount per unit volume of 33 wt% or less is set is that if it is more than 33 wt%, the weight cannot be reduced as compared with the conventional product impregnated with 35 to 40 wt%, and the unit volume of the first prepreg is The synthetic resin impregnation amount per unit is larger than that of the second prepreg,
Also, the reason for setting the content to 50 wt% or less is that if the amount is less than that of the second prepreg, the conformability becomes poor, and the inflow operation amount from the prepreg of the innermost layer to the prepreg of the outer layer decreases, so that the desired strength can be obtained. I can not do it again, 50
This is because if it is more than wt%, the familiarity does not change and the weight becomes heavy. Embodiments of the fishing rod of the present invention will be described below with reference to the drawings. The present invention basically winds a first prepreg 1 in which a synthetic resin 12 is impregnated on a sheet in which high-strength fibers 11 are lined up in a direction orthogonal to the longitudinal direction of a fishing rod,
Forming the innermost layer A 1 of the rod main body A, and impregnating a synthetic resin 22 into an aligning sheet in which high-strength fibers 21 are arranged along the length direction of the fishing rod on the outer side of the innermost layer A 1 The prepreg 2 is wound to form the outer layer A 2 of the rod body A, and the thickness of the innermost layer A 1 is thinner than the thickness of the outer layer A 2 , and the unit of the first prepreg 1 is The synthetic resin impregnation amount per volume was large relative to the second prepreg 2, in other words, the synthetic resin impregnation amount per unit volume in the second prepreg was set to a small amount to enable linear winding of high-strength fiber. That is. What is shown in the drawings is that the innermost layer A 1 of the rod main body A is formed into a single layer by the first prepreg 1, and the outer layer A 2 is arranged from the inner layer side to the second, first, second, and second layers. 2 prepregs 2, 1, 2, 2, 2 in this order 5
The second prepreg 2 is formed in layers, that is, a total of 6 layers, and the high-strength fibers 21 are carbon fibers having light and high-strength characteristics, which are aligned in the longitudinal direction of the fishing rod and are synthesized. The amount of the resin 22 impregnated is set to a value of 33 wt% or less, preferably 25% to 33 wt% with a small number of eyes capable of linearly winding the high-strength fiber 21 in the length direction of the fishing rod during the winding operation, and the thickness is 0. That is, the thickness is 05 mm to 0.1 mm. Further, the first prepreg 1 has the high-strength fibers 11 aligned in the circumferential direction of the fishing rod, and the impregnation amount of the synthetic resin 12 with respect to the second prepreg 2,
The value is 50 wt% or less, preferably 40 wt% to 50 wt% with a large number of eyes capable of being wound so that it is difficult to peel off during winding and exhibits good conformability, and the thickness is particularly thin, for example 0.012 mm to 0 This is a value within the range of 0.03 mm. Then, the first and second prepregs 1 and 2
As shown in FIGS. 1 and 2, the first prepreg 1 is overlaid with the second prepreg 2 so that the winding start ends are aligned,
The prepreg 1 is wound around the core metal 3 so that the prepreg 1 is on the inner side. Regarding the length dimension in the winding direction, the first prepreg 1 includes one layer of the innermost layer A 1 in the rod main body 1 and the outer layer A. and than make a total of two layers of the second layer one layer of know 2 of depression, and the second prepreg 2 includes a first overlap prepreg 1 during deployment, the from the inside of the outer layer a 2 when winding The second prepreg 2 overlaps the first prepreg 1 at the time of unfolding and the first and third layers from the inside of the outer layer A 2 at the time of winding. And the second prepreg 2 overlaps the first prepreg 1 at the time of deployment, and the second and third layers from the inside of the outer layer A 2 at the time of winding, first and out extending from the winding end of the prepreg 1 consisting inside of the outer layer a 2 and the fifth and sixth layer 2 It's formed by the minute and a total of six layers worth of. Thus, the first and second prepregs 1, 2
Before the winding process, they are not crimped, and before the winding process, they are softly superposed so that they can be slidably moved without crimping. It is preferable to wind while winding, and by doing so, when crimping each other in advance, each crimping portion is forcibly slid and moved to form a wrinkle, as in the case of winding those crimped in advance with each other. The problem that air enters and weakens is solved, and an ideal close contact state with no gaps can be achieved over the entire winding layers. As described above, the first and second prepregs 1 and 2 are overlapped,
As shown in FIG. 3, the core metal 3 is wound around to form a 6-layered rod main body A, and a reinforcing narrow tape 4 is spirally wound around the outer periphery of the rod main body A in a reciprocating direction and heated and baked. To do. The narrow tape 4 has a diameter smaller than that of the carbon fiber used for the second prepreg 2 and has a tensile strength of 30 kg or more.
0 pieces are aligned in a narrow width of 0.5 mm to 10 mm, and the amount of synthetic resin impregnated is set to 20 mm or less.
The value is in the range of ˜33 wt%, and the thickness is particularly thin, for example, the value in the range of 0.01 to 0.05 mm. With the above construction, however, the rod main body A
Means that the second prepreg 2 which is thicker and has a larger number of windings than the first prepreg 1 occupies most of the whole volume. The synthetic resin impregnation amount per unit volume of the second prepreg 2 is , 33 wt% or less, the overall weight of the second prepreg 2 can be reduced and the synthetic resin impregnation amount per unit volume of the first prepreg 1 is set to be greater than that of the second prepreg 2 and 50 wt% or less. Since the adhesiveness with is good, a part of the synthetic resin in the first prepreg 1 can flow into the second prepreg 2 impregnated with 33 wt% or less of the synthetic resin during the heating and firing step, We can improve the strength against tearing of the innermost layer a 1 and the outer layer 1 2. Then, the innermost layer A 1 of the rod body 1, Nashi as to extend along the arrangement direction of the high-strength fiber 11 orthogonal to the length direction of the fishing rod, moreover, the synthetic resin impregnation amount per unit volume, than the second prepreg Many and 5
Since the content is 0 wt% or less, both of the fiber direction and the amount of impregnated resin can be combined to prevent surface layer cracks on the inner surface side due to crushing of the fishing rod, and after molding, pull out the core metal by pulling it in the axial direction. At the same time, it is possible to prevent the occurrence of cracks on the surface of the innermost layer A 1 when cored. Further, since the synthetic resin impregnation amount per unit volume of the first prepreg 1 is set to be larger than that of the second prepreg 2 and 50 wt% or less, the conformability to the core metal can be improved, and the Ai 1 prepreg 1 can be obtained. Since the first prepreg 1 can be easily wound around the cored bar, the first prepreg 1 can be prevented from being twisted with respect to the axis of the cored bar, and the compatibility with the second prepreg of the outer layer A 2 can be improved, The innermost layer A 1 formed of the prepreg 2 and the outer layer A 2 formed of the second prepreg 2 can be adhered to each other. By the way, when the bending strength, the self-weight after firing and the specific strength (the flexural strength against the self-weight) of the conventional product and the product of the present invention were tested and compared, the results shown in the following table were obtained. [Table 1] However, the first and second prepregs each have two layers, and the high-strength fibers of the first and second prepregs are both carbon fibers. In addition, in the product of the present invention, the thickness of the innermost layer formed of the first prepreg is made smaller than the thickness of the outer layer formed of the second prepreg. Further, as shown in FIG. 5, the method of experiment is to support the rod main body A between the pair of supports B and B, and press the central portion of the rod main body with the pair of pressers C and C. Then, the bending load until the rod body A was broken was measured. In addition, the rod main body A includes the pushers C, C.
Reinforce by increasing the thickness of both ends except for the center part,
Reinforcing metal cores D and D are inserted into the contact portions of the rod body A with the support bodies B and the pressing elements C to prevent the contact portions from being broken due to shearing and crushing. did. As is clear from the above data, the bending strength to the own weight, that is, the ratio of the second prepreg 2 to the own weight is reduced as compared with the conventional product, though the synthetic resin impregnation amount per unit volume is 33 wt% or less to reduce the overall weight. It is possible to obtain a fishing rod which can be increased in strength, is lightweight, and has high strength. Further, since the narrow tape 4 is wound around the outermost layer of the second prepreg 2 in the rod body A, it is possible to prevent the outermost layer from cracking when the bending load of the fishing rod is applied. Of. Further, as described above, the rod main body A can be formed by simply stacking the first and second prepregs 1 and 2 and winding them four times in total, and the rod main body A can be easily formed. [Other Embodiments] In the above description, the outer layer A 2 of the rod main body A includes the second, first, second, second and second prepregs 2, 1, 2, 2 from the inside. , 2 in order of 5 layers, but the number of layers and the first and second prepregs 1,
The arrangement combination of 2 can be set arbitrarily. For example, the first and second prepregs 1 and 2 may be alternately arranged on the whole, or may be formed only by the second prepreg 2. Alternatively, the outermost layer of the outer layer A 2 may be
It may be formed by the first prepreg 1 similarly to the innermost layer A 1. In this case, even if the narrow tape 4 described above is not used, surface cracks on the outer surface side can be prevented, and a large number of narrow tapes 4 can be formed. Since there is no winding work over a number of times, the manufacturing process can be simplified as a whole. As described above, according to the present invention, the first prepreg impregnated with the synthetic resin is wound around the sheet in which the high-strength fibers are aligned and arranged in the direction orthogonal to the length direction of the fishing rod, The innermost layer of the rod body is formed, and a second prepreg impregnated with a synthetic resin in an aligning sheet having high-strength fibers arranged along the length direction of the fishing rod is wound on the outer side of the innermost layer, and The outer layer of the rod body is formed, the innermost layer is made thinner than the outer layer, and the impregnated amount of synthetic resin per unit volume of the second prepreg is 33 wt% or less.
Since the synthetic resin impregnation amount per unit volume of the prepreg is set to be larger than that of the second prepreg and 50 wt% or less, a fishing rod having the following advantages can be obtained. Since the impregnated amount of the synthetic resin per unit volume of the second prepreg forming the outer layer having a thickness thicker than the innermost layer is 33 wt% or less, the weight of the entire rod can be reduced. Moreover, the fiber direction of the first prepreg forming the innermost layer of the rod body is orthogonal to the length direction of the fishing rod, and the synthetic resin impregnation amount per unit volume is larger than that of the second prepreg and is 50 wt%. By the following, both the fiber direction and the impregnated resin amount can be combined to prevent surface cracks on the inner surface side due to crushing of the fishing rod, without hindering weight reduction by the second prepreg, and molding. Later, when the cored bar is pulled in the axial direction for decoreing, it is possible to simultaneously prevent cracking on the surface of the innermost layer. The compatibility of the first prepreg with the core bar can be improved, and the first prepreg can be easily wound around the core bar.
It is possible to prevent the prepreg from twisting with respect to the axis of the core metal, and to improve the conformability of the outer layer with the second prepreg. Therefore, the outermost layer made of the first prepreg and the outer layer made of the second prepreg You can make the space tight, and also
Since the synthetic resin impregnation amount of the second prepreg can be set to 33 wt% or less, it is possible to easily perform straight winding in which the fiber direction is wound along the entire length direction of the rod. In addition, the synthetic resin impregnation amount per unit volume of the first prepreg is larger than that of the second prepreg and is 50 wt%.
By the following, the adhesion between the first prepreg and the second prepreg can be improved, so that a part of the synthetic resin of the first prepreg in which the amount of synthetic resin per unit volume is increased in the heating step after winding. Can flow into the second prepreg, and the strength against tearing of the innermost layer and the outer layer can be improved. Therefore, from the above items, it is possible to increase the bending strength of the entire rod against its own weight, and it is possible to form a fishing rod that is lightweight and has high strength as a whole.
【図面の簡単な説明】
【図１】第１及び第２プリプレグを重ね合わせた状態の
平面図
【図２】芯金により巻回を開始する状態を示す概略説明
図
【図３】拡大断面説明図
【図４】一部概略正面図
【図５】実験方法の説明図
【符号の説明】
１ 第１プリプレグ
１１ 高強度繊維
１２ 合成樹脂
２ 第２プリプレグ
２１ 高強度繊維
２２ 合成樹脂
Ａ 竿本体
Ａ1 最内層
Ａ2 外側層BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a state in which first and second prepregs are overlapped with each other. FIG. 2 is a schematic explanatory diagram showing a state in which winding is started by a core bar. [Fig. 4] Partial schematic front view [Fig. 5] Explanatory diagram of experimental method [Explanation of symbols] 1 First prepreg 11 High-strength fiber 12 Synthetic resin 2 Second prepreg 21 High-strength fiber 22 Synthetic resin A Rod main body A 1 Innermost layer A 2 Outer layer
【手続補正書】
【提出日】平成４年９月１４日
【手続補正１】
【補正対象書類名】明細書
【補正対象項目名】全文
【補正方法】変更
【補正内容】
【書類名】 明細書
【発明の名称】 釣竿
【特許請求の範囲】
釣竿の長さ方向と直交する方向に高強度繊維を並び沿わ
せたシートに合成樹脂を含浸させた第１プリプレグを巻
装して前記竿本体の最内層を形成し、
該最内層の外側に、釣竿の長さ方向に高強度繊維を並び
沿わせた引揃えシートに合成樹脂を含浸させた第２プリ
プレグを巻装して、前記竿本体の外側層を形成すると共
に、
該外側層の外側に、さらに釣竿の長さ方向と直交する方
向に前記第１プリプレグを巻装して、最外層を形成し、
前記最内層並びに最外層の厚さを、外側層の厚さより薄
くし、
かつ、前記第２プリプレグの単位体積当りの合成樹脂含
浸量を高強度繊維を巻装可能な範囲で３３ｗｔ％以下と
し、
前記第１プリプレグの単位体積当りの合成樹脂含浸量
を、第２プリプレグより多く、かつ、５０ｗｔ％以下と
したことを特徴とする釣竿。
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、釣竿、詳しくは、高強
度繊維の引揃シートに合成樹脂を含浸させたプリプレグ
を引揃方向に巻装すべくした釣竿に関する。
【０００２】
【従来の技術】一般に、此種釣竿においては、前記プリ
プレグにおける合成樹脂の含浸量を少なくする程、釣竿
の曲げによる表層割れの度合が多くなる反面、重量の軽
減が行なえることになるが、通常前記合成樹脂の含浸量
を３５〜４０ｗｔ％とし、残りを前記繊維とした場合、
軽量で、かつ全体に所望の強度が得られるのである。従
って、従来の釣竿は、合成樹脂を３５〜４０ｗｔ％含浸
したプリプレグが用いられている。
【０００３】
【発明が解決しようとする課題】所が、とくに軽さを重
要視される釣竿の場合、以上のごとく合成樹脂を３５〜
４０ｗｔ％含浸したプリプレグを用いたのでは、単位体
積当りの重量を所定値以下に小さくすることができなく
て、全体の重量を所望の軽さにできず、さりとて前記合
成樹脂の含浸量を少なくしたプリプレグを用いたので
は、表層割れに対する強度を所定値以上に保つことがで
きなくて、ある限度を超して樹脂量を少なくした場合に
は、引張り強度等の物性が極度に低下し、これによって
釣竿各部の強度が全体に低下し、また曲げ荷重により、
実際には先ず釣竿の内面側と外面側において、所謂表層
割れが生ずることになる問題があった。
【０００４】
【課題を解決するための手段】しかして、本発明は以上
の点に鑑み発明したもので、目的は、合成樹脂を３５〜
４０ｗｔ％含浸したプリプレグを用いて形成した従来の
釣竿に比べて軽量にできながら、軽量化できる割に曲げ
荷重による表層割れを少なくでき、自重に対する曲げ強
度を高めることができるようにする点にある。しかし
て、本発明は、釣竿の長さ方向と直交する方向に高強度
繊維を並び沿わせた引揃えシートに合成樹脂を含浸させ
た第１プリプレグと、釣竿の長さ方向に高強度繊維を並
び沿わせた引揃えシートに合成樹脂を含浸させた第２プ
リプレグとを用い、第１プリプレグを竿本体の最内層と
最外層に、また、第２プリプレグを竿本体の外側層に配
設すると共に、最内層並びに最外層の厚さを、外側層の
厚さより薄くし、かつ、第２プリプレグの単位体積当り
の合成樹脂含浸量を高強度繊維を巻装可能な範囲で３３
ｗｔ％以下の少量とし、第１プリプレグの単位体積当り
の合成樹脂含浸量を、第２プリプレグより多く、かつ５
０ｗｔ％以下とし、もって、竿本体を所望の軽さにでき
ながら、巻装時最内層に巻回する第１プリプレグの芯金
に対するなじみ性を向上できて、焼成時の脱芯時、最内
層の表面に割れができるのを防ぐことができ、しかも、
外側層を形成する第２プリプレグに対する第１プリプレ
グのなじみ性をも向上できると共に、巻装後の加熱工程
で、最内層並びに最外層の第１プリプレグから外側層の
第２プリプレグに合成樹脂を流入させて竿本体を構成す
る各層間での引裂きに対する強度を全体に向上でき、更
に内面側及び外面側における表層割れを少なくでき、殊
に、繊維方向を釣竿の長さ方向に直交する方向に巻装す
る最内層と最外層の第１プリプリグにより、径方向の耐
圧漬力及びねじれ強さを内、外において増大させると共
に、最外層の第１プリプリグによって曲げ変形に伴う縦
割れ又は折損を効果的に抑えて、自重に対する曲げ強度
を高めることができるようにしたのである。なお、本発
明において、「釣竿」とは、複数本の竿本体を継合して
なる継竿や引出竿の他１本竿も含むし、また、竿尻に継
ぎ足して使用する長さ調整竿も含む。更に、「竿本体」
とは、継竿や引出竿の場合、これら継竿や引出竿を構成
する複数本の竿本体のうちの単一のものをいう、又、本
発明において、第２プリプレグの単位体積当りの合成樹
脂含浸量を３３ｗｔ％以下としたのは、３３ｗｔ％より
多くすると、３５〜４０ｗｔ％含浸した従来品に比べて
軽量化できないからであり、又、第１プリプレグの単位
体積当りの合成樹脂含浸量を、第２プリプレグより多
く、かつ、５０ｗｔ％以下としたのは、第２プリプレグ
より少ないと、なじみ性が悪くなると共に、最内層のプ
リプレグから外側層のプリプレグへの流入作動量が少な
くなって、所望の強度を得ることができなくなり、又、
５０ｗｔ％より多くしてもなじみ性は変わらないし、重
くなるからである。
【０００５】
【実施例】以下、本発明釣竿の実施例を図面に基づいて
説明する。本発明は、基本的には、釣竿の長さ方向と直
交する方向に高強度繊維１１を並び沿わせたシートに合
成樹脂１２を含浸させた第１プリプレグ１を巻装して、
竿本体Ａの最内層Ａ1を形成し、該最内層Ａ1の外側に、
釣竿の長さ方向高強度繊維２１を並び沿わせた引揃えシ
ートに合成樹脂２２を含浸させた第２プリプレグ２を巻
装して、竿本体Ａの外側層Ａ2を形成すると共に、該外
側層Ａ2の外側に、更に釣竿の長さ方向に直交する方向
に前記第１プリプレグ１を巻装して、最外層Ａ 3を形成
し、かつ、前記最内層Ａ1並びに最外層Ａ3の厚さを、外
側層Ａ2の厚さより薄く、かつ、前記第１プリプレグ１
の単位体積当りの合成樹脂含浸量を、前記第２プリプレ
グ２より多く、かつ、５０ｗｔ％以下に、換言すると、
前記第２プリプレグにおける単位体積当りの合成樹脂含
浸量を、高強度繊維の巻きを可能にする範囲で３３ｗｔ
％以下の少量に成したことである。図面に示したもの
は、前記竿本体Ａの最内層Ａ1を前記第１プリプレグ１
により一層状に、また、前記外側層Ａ2を内層側から第
２、第１、第２、第２及び第２プリプレグ２，１，２，
２，２の順に５層状に、前記最外層Ａ3を前記第１プリ
プレグ１により一層状に、合計７層状に形成したのであ
って、前記第２プリプレグ２は、高強度繊維２１とし
て、軽くて高強度の特性を有するカーボン繊維を用いて
釣竿の長さ方向に引揃え、かつ合成樹脂２２の含浸量
を、巻回作業時、高強度繊維２１を釣竿の長さ方向に巻
き可能な少ない目で３３ｗｔ％以下、好ましくは２８％
乃至３３ｗｔ％の値とし、かつ厚みを０．０５ｍｍ乃至
０．１ｍｍと成すのである。また、前記第１プリプレグ
１は、前記高強度繊維１１として、釣竿の周方向に引揃
え、かつ、前記合成樹脂１２の含浸量を、前記第２プリ
プレグ２に対し、巻回時に剥離し難く、良好ななじみ性
を発揮して巻回可能な多い目で５０ｗｔ％以下、好まし
くは４０ｗｔ％乃至５０ｗｔ％の値とし、かつ厚みを、
とくに薄い、例えば０．０１２ｍｍ乃至０．０３ｍｍの
範囲内の値と成すのである。そして、前記第１及び第２
プリプレグ１，２は、第１及び第２図のごとく、第１プ
リプレグ１の上に第２プリプレグ２を巻回始端が揃うご
とく重ねて、第１プリプレグ１が内側になるごとく芯金
３に巻回させるのであって、巻回方向の長さ寸法につい
ては、第１プリプレグ１は、竿本体１における最内層Ａ
1と最外層Ａ3の各一層分と、外側層Ａ2の内側から第２
層目の一層分との合計３層分と成すのであり、また第２
プリプレグ２は、展開時第１プリプレグ１に重なり、巻
回時外側層Ａ2の内側から第１及び第３層目となる２層
分と、第１プリプレグ１の巻回終端から伸び出して外側
層Ａ2の内側から第５及び第６層目となる２層分との合
計６層分と成すのである。しかして、前記第１及び第２
プリプレグ１，２は、巻回工程の前においては、圧着す
ることなく、互いに摺動移動自在にソフトに重ね合わせ
た状態と成し、巻回工程時に互いに圧着させながら巻回
するのが好ましく、斯くすることにより、巻回時に、相
互に前もって圧着したものを巻回する場合のごとく、互
いの圧着部が無理に摺動移動させられ、しわ状となって
空気が入り込み弱体化する問題が解消され、各巻回層間
の全体に亘って、隙間の全くない理想的な密着状態とな
し得るのである。斯くのごとく前記第１及び第２プリプ
レグ１，２を重ね合わせ、前記芯金３により巻回して、
第３図のごとく、７層状の竿本体Ａを形成すると共に、
その外周に、補強用の細幅テープ４を往復方向に螺旋状
に巻回して加熱焼成するのである。この細幅テープ４
は、前記第２プリプレグ２に用いたカーボン繊維より細
径で引張強度３０ｋｇ以上のカーボン繊維を用いて、該
カーボン繊維の例えば３０００本のものを幅寸法０．５
ｍｍ〜１０ｍｍの細幅状に引揃え、かつ合成樹脂の含浸
量を、少ない目の例えば２０〜３３ｗｔ％の範囲内の値
とし、かつ厚みを、とくに薄い、例えば、０．０１〜
０．０５ｍｍの範囲内の値と成すのである。
【０００６】
【作用】しかして、以上の構成において、前記竿本体Ａ
は、前記最内層Ａ1と最外層Ａ3を形成する第１プリプレ
グ１に比べて、層を厚くして形成する外側層Ａ2の前記
第２プリプレグ２が、全体積の大半を占めることになる
が、この第２プリプレグ２の単位体積当りの合成樹脂含
浸量を、高強度繊維を巻装可能な範囲で３３ｗｔ％以下
の少量としたので、全体に軽量にできながら、しかも、
第１プリプレグ１の単位体積当りの合成樹脂含浸量を、
第２プリプレグ２より多く、かつ、５０ｗｔ％以下とし
て、第２プリプレグ２との密着性を良好としたので、加
熱焼成の工程時に、第１プリプレグ１における合成樹脂
の一部が、３３ｗｔ％以下の合成樹脂を含浸させた第２
プリプレグ２中に流入することができ、最内層Ａ1、最
外層Ａ3及び外側層Ａ2の各層間での引き裂きに対する強
度を向上できるのである。そして、前記竿本体１の最内
層Ａ1と最外層Ａ3を、釣竿の長さと直交する方向に繊維
を巻装する第１プリプレグによって形成し、しかも、第
１プリプレグの単位体積当りの合成樹脂含浸量を、第２
プリプレグより多く、かつ５０ｗｔ％以下としているか
ら、前記繊維方向と含浸樹脂量との両者が相俟って釣竿
の圧潰に起因する内面側及び外面側の表層割れを防止で
きると共に、成型後、芯金を軸方向に引張って脱芯する
場合に、前記最内層Ａ1の表面に割れが生ずることも同
時に防止できるのである。更に、第１プリプレグ１の単
位体積当りの合成樹脂含浸量を、第２プリプレグ２より
多く、かつ、５０ｗｔ％以下としているから、前記芯金
に対するなじみ性を良好にでき、前記第１プリプレグ１
を芯金に巻き付け易い上、第１プリプレグ１が芯金の軸
心に対し捩れるのを防止できるし、外側層Ａ2の第２プ
リプレグ２とのなじみ性も良好にできるので、第１プリ
プレグ１から成る最内層Ａ1及び最外層Ａ3と、第２プリ
プレグ２から成る外側層Ａ2との間を密着させられるの
である。因に前記した従来品と、本発明品との曲げ強
度、焼成後の自重、比強度（自重に対す曲げ強度）とを
実験して比較すると次表のような結果が得られた。
【０００７】
【表１】
【０００８】但し、第１及び第２プリプレグは、何れも
２層で第１、第２、第２、第１プリプレグの順で巻装さ
れ、第１及び第２プリプレグの高強度繊維は、何れもカ
ーボン繊維である。尚、本発明品においては、第１プリ
プレグで形成する最内層及び最外層の厚さを第２プリプ
レグで形成する外側層の厚さより薄くしている。又、実
験の方法は、第５図に示している如く、１対の支持体
Ｂ，Ｂ間に竿本体Ａを支持し、この竿本体の中央部を１
対の押圧子Ｃ，Ｃで押圧して、竿本体Ａが破壊するまで
の曲げ荷重を測定した。尚、前記竿本体Ａは、前記各押
圧子Ｃ，Ｃ間の中央部を除く両端側の肉厚を厚くして補
強し、又、竿本体Ａの前記各支持体Ｂ及び各押圧子Ｃと
の当接部には、補強用芯金Ｄ，Ｄを挿入して、前記各当
接部のせん断、圧潰による破壊を防止するようにした。
以上のデータから明らかなように、第２プリプレグ２の
単位体積当りの合成樹脂含浸量を３３ｗｔ％以下として
全体の自重を軽くしたに拘らず、従来品に比べて自重に
対する曲げ強度、即ち、比強度を高めることができ、軽
量で、しかも、高強度の釣竿が得られるのである。
【０００９】〔別実施例〕尚、以上の説明では、前記竿
本体Ａの外側層Ａ2は、内側から第２、第１、第２、第
２、第２プリプレグ２，１，２，２，２の順に５層状に
形成すべくしたが、層数及び第１、第２プリプレグ１，
２の配列組合わせは任意に設定できるのであって、例え
ば、第１及び第２プリプレグ１，２を全体に交互に配列
すべく成してもよいし、第２プリプレグ２のみにより形
成すべく成してもよい。また、外側層Ａ2の最外層Ａ
3を、最内層Ａ1と同様に第１プリプレグ１により形成し
たので、この場合には、前記した細幅テープ４を用いな
くとも外面側の表層割れを防止できるし、細幅テープ４
の多数回に亘る巻回作業がないので、全体に製造工程を
簡略にできる。
【００１０】
【発明の効果】以上のごとく本発明は、釣竿の長さ方向
と直交する方向に高強度繊維を並び沿わせたシートに合
成樹脂を含浸させた第１プリプレグを巻装して、竿本体
の最内層を形成し、該最内層の外側に、釣竿の長さ方向
に高強度繊維を並び沿わせた引揃えシートに合成樹脂を
含浸させた第２プリプレグを巻装して、前記竿本体の外
側層を形成すると共に、該外側層の外側に、さらに釣竿
の長さ方向に前記第１プリプレグを巻装して、最外層を
形成し、前記最内層並びに最外層の厚さを、外側層の厚
さより薄くし、かつ、前記第２プリプレグの単位体積当
りの合成樹脂含浸量を高強度繊維を巻装可能な範囲で３
３ｗｔ％以下の少量とし、前記第１プリプレグの単位体
積当りの合成樹脂含浸量を、前記第２プリプレグより多
く、かつ、５０ｗｔ％以下としたから、次の利点を有す
る釣竿が得られるのである。
最内層及び最外層より厚さの厚い外側層を形成する
第２プリプレグの単位体積当りの合成樹脂含浸量が、３
３ｗｔ％以下であるため、竿全体を軽量にできるのであ
る。
しかも、竿本体の最内層及び最外層を形成する第１
プリプレグの繊維方向を、釣竿の長さ方向と直交する方
向とし、しかも単位体積当りの合成樹脂含浸量を、第２
プリプレグより多く、かつ、５０ｗｔ％以下とすること
により、前記第２プリプレグによる軽量化を阻害するこ
となく、前記繊維方向と含浸樹脂量との両者が相俟って
釣竿の圧潰に基因する内面側の表層割れを防止できると
共に、成形後、芯金を軸方向に引張って脱芯する場合
に、前記最内層の表面に割れが生ずることも同時に防止
できるのである。
殊に、本発明は繊維方向を釣竿の長さ方向に直交す
る方向に巻装する最内層と最外層の第１プリプレグによ
り、径方向の耐圧漬力及びねじり強さを内、外において
増大させると共に、最外層の第１プリプレグによって曲
げ変形に伴う縦割れ又は折損を効果的に抑制して、釣竿
全体の比強度をより一層高め得る。
芯金に対する最内層の第１プリプレグのなじみ性を
良好にでき、前記第１プリプレグを芯金に巻き付け易い
上、第１プリプレグが芯金の軸心に対し捩れるのを防止
できるし、外側層の第２プリプレグとのなじみ性も良好
にできるので、第１プリプレグから成る最内層と最外層
と、第２プリプレグから成る外側層との各層間を密着さ
せられるし、また、第２プリプレグの合成樹脂含浸量を
３３ｗｔ％以下とすることができるから、その繊維方向
を竿全体の長さ方向に沿わせて巻装する巻きも容易にで
きるのである。
その上、第１プリプレグの単位体積当りの合成樹脂
含浸量を、第２プリプレグより多く、かつ、５０ｗｔ％
以下とすることにより、第１プリプレグと第２プリプレ
グとの密着性を良好にできるから、巻装後の加熱工程
で、単位体積当りの合成樹脂量を多くした第１プリプレ
グの合成樹脂の一部が第２プリプレグに流入することが
でき、最内層、最外層及び外側層の各層間での引き裂き
に対する強度を向上できるのである。従って、以上の
〜により、竿全体の自重に対する曲げ強度を高めるこ
とができるのであり、全体として軽量で、しかも強度の
高い釣竿を形成できるのである。
【図面の簡単な説明】
【図１】第１及び第２プリプレグを重ね合わせた状態の
平面図
【図２】芯金により巻回を開始する状態を示す概略説明
図
【図３】拡大断面説明図
【図４】一部概略正面図
【図５】実験方法の説明図
【符号の説明】
１ 第１プリプレグ
１１ 高強度繊維
１２ 合成樹脂
２ 第２プリプレグ
２１ 高強度繊維
２２ 合成樹脂
Ａ 竿本体
Ａ1 最内層
Ａ2 外側層
Ａ3 最外層
【手続補正２】
【補正対象書類名】図面
【補正対象項目名】図３
【補正方法】変更
【補正内容】
【図３】
[Procedure amendment]
[Submission date] September 14, 1992
[Procedure Amendment 1]
[Document name to be amended] Statement
[Name of item to be corrected] Full text
[Correction method] Change
[Correction content]
[Document name] Statement
[Title of Invention] Fishing rod
[Claims]
Place high-strength fibers in a direction orthogonal to the length of the fishing rod.
Wind the first prepreg impregnated with synthetic resin on the sheet
To form the innermost layer of the rod body,
Outside the innermost layer, high-strength fibers are arranged in the length direction of the fishing rod.
2nd pre with impregnated synthetic resin on the aligned sheets
It is common to wind the prepreg to form the outer layer of the rod body.
To
One outside the outer layer and orthogonal to the longitudinal direction of the fishing rod
The first prepreg is wound in the opposite direction to form the outermost layer,
The thickness of the innermost layer and the outermost layer is less than the thickness of the outer layer.
Comb,
In addition, the second prepreg contains a synthetic resin per unit volume.
The amount of immersion is 33 wt% or less in the range where high-strength fiber can be wound.
Then
Synthetic resin impregnation amount per unit volume of the first prepreg
Is more than the second prepreg and 50 wt% or less
A fishing rod characterized by doing.
Detailed Description of the Invention
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishing rod, more specifically, a high strength rod.
Prepreg with synthetic resin impregnated into a straight fiber alignment sheet
The present invention relates to a fishing rod that is intended to be wound in the assembling direction.
[0002]
2. Description of the Related Art Generally, in this type of fishing rod,
The smaller the amount of synthetic resin impregnated in the prepreg, the more fishing rod
Although the degree of surface cracking due to bending of the
Although it can be reduced, usually the amount of synthetic resin impregnated
Is 35 to 40 wt% and the rest is the fiber,
It is lightweight and has the desired overall strength. Servant
Therefore, the conventional fishing rod is impregnated with 35-40 wt% of synthetic resin.
The prepreg which was made is used.
[0003]
[Problems to be solved by the invention]
In the case of fishing rods that are required, synthetic resin 35-35
If a prepreg impregnated with 40 wt% is used,
The weight per product cannot be reduced below a certain value.
Therefore, the total weight cannot be reduced to the desired value.
Since we used a prepreg with less impregnation of synthetic resin,
Can maintain the strength against surface cracking above a specified value.
If the amount of resin is reduced below a certain limit,
Has extremely deteriorated physical properties such as tensile strength.
The strength of each part of the fishing rod decreases overall, and due to bending load,
Actually, first of all, the so-called surface layer on the inner surface side and the outer surface side of the fishing rod.
There was a problem that cracking would occur.
[0004]
Therefore, the present invention has been described above.
The invention was made in view of the above point, and the purpose is to make synthetic resin 35 to 35
A conventional prepreg impregnated with 40 wt%
It can be made lighter than a fishing rod, but it can be made lighter but bends
Surface layer cracking due to load can be reduced and bending strength against its own weight
The point is to be able to increase the degree. However
The present invention provides high strength in the direction orthogonal to the length direction of the fishing rod.
A synthetic resin is impregnated into an aligned sheet with fibers arranged side by side.
The first prepreg and the high-strength fiber along the length of the fishing rod.
The second ply, which is made by impregnating synthetic resin into the aligned sheet
Using the prepreg, the first prepreg as the innermost layer of the rod body
Place the second prepreg on the outermost layer and on the outer layer of the rod body.
In addition to setting the thickness of the innermost layer and the outermost layer,
Thinner than the thickness and per unit volume of the second prepreg
The synthetic resin impregnation amount of 33 is within the range in which high-strength fiber can be wound.
A small amount of less than wt%, per unit volume of the first prepreg
The synthetic resin impregnation amount of is larger than that of the second prepreg, and 5
0 wt% or less, so that the rod body can be made as light as desired
However, the core metal of the first prepreg that is wound on the innermost layer during winding
It is possible to improve the compatibility with the
It is possible to prevent cracks on the surface of the layer, and moreover,
First prepreg for second prepreg forming outer layer
It is possible to improve the conformability of the grip and the heating process after winding.
The innermost layer and the outermost layer from the first prepreg to the outer layer
Construct a rod body by injecting synthetic resin into the second prepreg.
The overall strength against tearing between layers can be improved and
It is possible to reduce surface layer cracks on the inner and outer surfaces,
In addition, wind the fiber direction in the direction orthogonal to the length direction of the fishing rod.
The innermost and outermost layers of the first prepreg
Increasing the squeezing force and the torsional strength both inside and outside
The first prepreg of the outermost layer causes
Bending strength against own weight by effectively suppressing cracking or breakage
It was possible to increase. In addition, this
In Ming, "fishing rod" is a combination of multiple rod bodies.
In addition to Nari-joining rod and pull-out rod, it also includes one rod,
Including a length-adjusting rod to be used as a gimmick. Furthermore, the "pole body"
And, in the case of a connecting rod or a pulling rod, configure these connecting rods or the pulling rod.
A single one of multiple rod bodies
In the invention, the synthetic tree per unit volume of the second prepreg
The fat impregnation amount is set to 33 wt% or less because
Compared with the conventional product that is impregnated with 35-40 wt%
This is because the weight cannot be reduced, and the unit of the first prepreg is
The synthetic resin impregnation amount per volume is higher than that of the second prepreg.
The second prepreg is the one that is 50 wt% or less.
If the amount is less, the conformability becomes poor and the innermost layer
A small amount of inflow operation from the prepreg to the prepreg of the outer layer
It becomes impossible to obtain the desired strength, and
Even if it exceeds 50 wt%, the familiarity does not change and
Because it will be.
[0005]
Embodiments of the present invention will now be described with reference to the drawings.
explain. The present invention is basically directed to the longitudinal direction of the fishing rod.
Fits a sheet with high-strength fibers 11 lined up in the intersecting direction.
Winding the first prepreg 1 impregnated with the synthetic resin 12,
Innermost layer A of rod body A1To form the innermost layer A1Outside of
A long and high strength fiber 21 in the longitudinal direction of the fishing rod
Wind the second prepreg 2 in which the synthetic resin 22 is impregnated
Outer layer A of the rod body A2While forming the
Side layer A2On the outside of the rod and in the direction perpendicular to the length direction of the fishing rod.
The first prepreg 1 is wound around the outermost layer A 3Forming
And the innermost layer A1And outermost layer A3Outside the thickness of
Side layer A2Thinner than the thickness of the first prepreg 1
The synthetic resin impregnation amount per unit volume of
More than 2 and less than 50 wt%, in other words,
Synthetic resin content per unit volume in the second prepreg
Dipping amount is 33wt within the range that enables high strength fiber winding.
It is a small amount of less than%. What is shown in the drawing
Is the innermost layer A of the rod body A1The first prepreg 1
By a single layer, and the outer layer A2From the inner layer side
2, first, second, second and second prepreg 2, 1, 2,
The outermost layer A is formed into 5 layers in the order of 2 and 2.3The first pre
The prepreg 1 formed a single layer and a total of 7 layers.
The second prepreg 2 is made of high strength fiber 21.
And using carbon fiber that is light and has high strength characteristics
The length of the fishing rod is aligned and the amount of synthetic resin 22 impregnated
During the winding operation, the high-strength fiber 21 is wound in the longitudinal direction of the fishing rod.
Less than 33 wt%, preferably 28%
To 33 wt% and a thickness of 0.05 mm to
It is 0.1 mm. In addition, the first prepreg
1 is the high-strength fiber 11 aligned in the circumferential direction of the fishing rod.
In addition, the impregnation amount of the synthetic resin 12 is set to the second
Good compatibility with prepreg 2 because it is difficult to peel off when wound.
50 wt% or less with many eyes that can be wound by winding,
Or 40wt% to 50wt% and the thickness is
Particularly thin, for example 0.012 mm to 0.03 mm
It is a value within the range. And the first and second
The prepregs 1 and 2 are, as shown in FIGS. 1 and 2, the first prepreg.
Winding the second prepreg 2 on top of the prepreg 1
After stacking, core metal so that the first prepreg 1 is inside
The length is measured in the winding direction.
The first prepreg 1 is the innermost layer A of the rod body 1.
1And outermost layer A3Outer layer A2Second from inside
The total of three layers including the first layer and the second layer
The prepreg 2 overlaps with the first prepreg 1 at the time of deployment and is wound.
Rotating outer layer A2The second and third layers from the inside
Minutes and the outside from the winding end of the first prepreg 1
Layer A2From the inside of the 2nd and 5th and 6th layer
It consists of a total of 6 layers. Thus, the first and second
The prepregs 1 and 2 should be crimped before the winding process.
Softly overlapping each other without sliding
It is in the state of being wound, and wound while pressing each other during the winding process.
It is preferable that by doing so, when winding,
As when winding things that have been crimped together in advance,
The crimping part of the bush is forcibly slid and moved to form a wrinkle.
The problem that air enters and weakens is solved, and each winding layer
An ideal close contact with no gaps over the entire
You can do it. As described above, the first and second prep
The legs 1 and 2 are piled up and wound by the core metal 3,
As shown in FIG. 3, while forming a 7-layered rod main body A,
A narrow tape 4 for reinforcement is spirally wound around the outer periphery in the reciprocating direction.
It is wound and heated and baked. This narrow tape 4
Is thinner than the carbon fiber used for the second prepreg 2.
Using a carbon fiber having a tensile strength of 30 kg or more in diameter,
For example, 3000 carbon fibers with a width of 0.5
mm to 10 mm narrow width and synthetic resin impregnation
The amount is a value within the range of, for example, 20 to 33 wt% for the smaller eye.
And the thickness is particularly thin, for example, 0.01 to
This is a value within the range of 0.05 mm.
[0006]
With the above structure, the rod main body A
Is the innermost layer A1And outermost layer A3First pre-preparation forming
Outer layer A formed by making the layer thicker than2Of the above
The second prepreg 2 will occupy most of the total volume
However, the synthetic resin content per unit volume of the second prepreg 2 is
Dipping amount is 33 wt% or less in the range in which high-strength fiber can be wound.
Since it is a small amount, it can be made lightweight overall, and yet
The synthetic resin impregnation amount per unit volume of the first prepreg 1
More than the second prepreg 2 and 50 wt% or less
The adhesiveness with the second prepreg 2 was improved,
Synthetic resin in the first prepreg 1 during the process of heat firing
Part of which is impregnated with 33 wt% or less of synthetic resin
It can flow into the prepreg 2 and is the innermost layer A1, Up
Outer layer A3And outer layer A2Strength against tearing between layers
The degree can be improved. And the innermost part of the rod body 1
Layer A1And outermost layer A3The fiber in the direction orthogonal to the length of the fishing rod.
Formed by the first prepreg for winding the
The synthetic resin impregnation amount per unit volume of 1 prepreg is
Is it more than prepreg and less than 50wt%?
, The fiber direction and the amount of impregnated resin are combined to make a fishing rod.
Prevents surface cracks on the inner and outer surfaces due to crushing
And, after molding, pull the core metal in the axial direction to remove the core.
In the case of the innermost layer A1It is also the case that cracks occur on the surface of
Sometimes it can be prevented. Furthermore, the first prepreg 1
The synthetic resin impregnation amount per unit volume from the second prepreg 2
Since the amount is large and 50 wt% or less, the core metal
The first prepreg 1 can have good conformability to
Is easy to wind around the core, and the first prepreg 1 is the shaft of the core.
It is possible to prevent twisting to the heart, and the outer layer A2Second page
Since the compatibility with the prepreg 2 can be improved, the first prepreg
Innermost layer A consisting of prepreg 11And outermost layer A3And the second pre
Outer layer A consisting of prepreg 22I can make a close contact with
Is. As a result, the bending strength between the conventional product described above and the product of the present invention
Degree, self-weight after firing, specific strength (bending strength against self-weight)
The results shown in the following table were obtained by experiment and comparison.
[0007]
[Table 1]
However, both the first and second prepregs are
The two layers are wound in the order of first, second, second and first prepreg.
The high-strength fibers of the first and second prepregs are both
Carbon fiber. In the product of the present invention, the first pre
The thickness of the innermost layer and outermost layer formed by the prepreg is adjusted to the second prep
It is thinner than the thickness of the outer layer formed by the legs. Also, real
The test method is as shown in FIG.
The rod body A is supported between B and B, and the central portion of this rod body is set to 1
Press the pair of pushers C, C until the rod body A is destroyed
The bending load was measured. In addition, the rod main body A is
Complement by increasing the wall thickness on both ends except the central part between the indenters C, C
And each support B and each presser C of the rod main body A
Reinforcing cores D and D are inserted into the contacting part of
It was designed to prevent damage due to shearing and crushing of the contact area.
As is clear from the above data, the second prepreg 2
The synthetic resin impregnation amount per unit volume is set to 33 wt% or less
Despite its light weight, it is heavier than conventional products
Bending strength, that is, specific strength, can be increased
In quantity, a high-strength fishing rod can be obtained.
[Other Embodiments] In the above description, the rod
Outer layer A of body A2Is the second, first, second,
2, the second prepreg 2, 1, 2, 2, 2 in order of 5 layers
The number of layers and the first and second prepregs 1,
The sequence combination of 2 can be set arbitrarily.
For example, the first and second prepregs 1 and 2 are arranged alternately in the whole.
You can do it as you see fit, but only by using the second prepreg 2
You may do what you want to do. Also, the outer layer A2Outermost layer A
3The innermost layer A1Formed by the first prepreg 1 in the same manner as
Therefore, in this case, do not use the narrow tape 4 described above.
At least the outer surface side can be prevented from cracking, and the narrow tape 4
Since there is no winding work for multiple times, the entire manufacturing process
Can be simplified.
[0010]
INDUSTRIAL APPLICABILITY As described above, the present invention is directed to the longitudinal direction of a fishing rod.
Fits a sheet with high-strength fibers lined up in a direction orthogonal to
Winding the first prepreg impregnated with synthetic resin, the rod body
The innermost layer of the fishing rod is formed on the outer side of the innermost layer of the fishing rod.
Synthetic resin on the aligned sheet with high-strength fibers
The impregnated second prepreg is wound around the outside of the rod body.
Forming a side layer, and further to the outside of the outer layer, a fishing rod
The first prepreg is wound in the length direction of the
Form the thickness of the innermost layer and outermost layer, the thickness of the outer layer
And a unit volume equivalent of the second prepreg.
3 synthetic resin impregnation amount within the range in which high strength fiber can be wound
A small amount of 3 wt% or less, the unit body of the first prepreg
The synthetic resin impregnation amount per product is higher than that of the second prepreg.
In addition, since it is 50 wt% or less, it has the following advantages.
The fishing rod is obtained.
Form an outer layer that is thicker than the innermost and outermost layers
The synthetic resin impregnation amount per unit volume of the second prepreg is 3
Since it is 3 wt% or less, the weight of the entire rod can be reduced.
It
Moreover, the first and the outermost layers of the rod body are formed.
One in which the fiber direction of the prepreg is orthogonal to the length direction of the fishing rod
And the synthetic resin impregnation amount per unit volume
More than prepreg and less than 50wt%
Prevents the weight reduction due to the second prepreg.
However, both the fiber direction and the amount of impregnated resin work together.
It is possible to prevent surface cracks on the inner surface side due to crushing of the fishing rod.
In both cases, after molding, when pulling the core metal in the axial direction to decore
At the same time, it prevents cracks on the surface of the innermost layer.
You can do it.
In particular, the present invention makes the fiber direction orthogonal to the longitudinal direction of the fishing rod.
By the first prepreg of the innermost layer and the outermost layer
The radial pressure resistance and torsional strength inside and outside
Increase and increase the number of songs by the outermost first prepreg
Effectively suppresses vertical cracking or breakage due to deformation.
The overall specific strength can be further increased.
The compatibility of the innermost first prepreg with the core metal
Good results, easy to wind the first prepreg around the core
Above, prevent the first prepreg from twisting with respect to the core of the core
It is possible and has good compatibility with the second prepreg of the outer layer
The innermost and outermost layers of the first prepreg
And the outer layer consisting of the second prepreg, and each layer
The amount of synthetic resin impregnated in the second prepreg.
Since it can be 33 wt% or less, its fiber direction
It is easy to wind the rod along the entire length of the rod.
You can.
Moreover, synthetic resin per unit volume of the first prepreg
The amount of impregnation is greater than that of the second prepreg and is 50 wt%
By the following, the first prepreg and the second prepreg are
Since it can improve the adhesion with the magnet, the heating process after winding
The first prepreg with a large amount of synthetic resin per unit volume
Part of the synthetic resin of the rubber may flow into the second prepreg.
Yes, tearing between innermost layer, outermost layer and outer layer
The strength against can be improved. Therefore, the above
To increase the bending strength of the entire rod against its own weight.
Because it is possible to use, it is light in weight and strong.
A high fishing rod can be formed.
[Brief description of drawings]
FIG. 1 shows a state in which first and second prepregs are overlapped with each other.
Plan view
FIG. 2 is a schematic explanation showing a state in which winding is started by a core bar.
Figure
FIG. 3 is an enlarged sectional explanatory view.
FIG. 4 is a partial schematic front view.
FIG. 5 is an explanatory diagram of the experimental method.
[Explanation of symbols]
1st prepreg
11 High strength fiber
12 synthetic resin
2 Second prepreg
21 High strength fiber
22 synthetic resin
A pole body
A1 Innermost layer
A2 Outer layer
A3 Outermost layer
[Procedure Amendment 2]
[Document name to be corrected] Drawing
[Name of item to be corrected] Figure 3
[Correction method] Change
[Correction content]
[Figure 3]
Claims (1)
せたシートに合成樹脂を含浸させた第１プリプレグを巻
装して前記竿本体の最内層を形成し、 該最内層の外側に、釣竿の長さ方向に高強度繊維を並び
沿わせた引揃えシートに合成樹脂を含浸させた第２プリ
プレグを巻装して、前記竿本体の外側層を形成すると共
に、 該外側層の外側に、さらに前記第１プリプレグを巻装し
て、最外層を形成し、 前記最内層の厚さを、外側層の厚さより薄くし、 かつ、前記第２プリプレグの単位体積当りの合成樹脂含
浸量を高強度繊維を巻装可能な範囲で３３ｗｔ％以下と
し、 前記第１プリプレグの単位体積当りの合成樹脂含侵量
を、第２プリプレグより多く、かつ、５０ｗｔ％以下と
したことを特徴とする釣竿。Claims: A first prepreg impregnated with a synthetic resin is wound around a sheet having high-strength fibers arranged in a direction orthogonal to the longitudinal direction of the fishing rod to form an innermost layer of the rod main body, On the outer side of the innermost layer, a second prepreg impregnated with a synthetic resin is wound around a aligning sheet in which high-strength fibers are arranged in the longitudinal direction of the fishing rod to form an outer layer of the rod body. The first prepreg is further wound around the outer layer to form an outermost layer, the thickness of the innermost layer is made thinner than the thickness of the outer layer, and the unit volume of the second prepreg is The synthetic resin impregnation amount per unit is 33 wt% or less in a range in which high-strength fibers can be wound, and the synthetic resin impregnation amount per unit volume of the first prepreg is larger than that of the second prepreg and 50 wt% or less. A fishing rod characterized by doing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4217833A JP2622798B2 (en) | 1992-08-17 | 1992-08-17 | Fishing rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4217833A JP2622798B2 (en) | 1992-08-17 | 1992-08-17 | Fishing rod |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58237475A Division JPS60130322A (en) | 1983-12-15 | 1983-12-15 | Fishing rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05260885A true JPH05260885A (en) | 1993-10-12 |
| JP2622798B2 JP2622798B2 (en) | 1997-06-18 |
Family
ID=16710467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4217833A Expired - Lifetime JP2622798B2 (en) | 1992-08-17 | 1992-08-17 | Fishing rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2622798B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3022351U (en) * | 1995-09-02 | 1996-03-22 | マミヤ・オーピー株式会社 | Club head mounting structure |
| JP2006288344A (en) * | 2005-04-14 | 2006-10-26 | Shimano Inc | Rod member of fishing rod |
| JP2012152187A (en) * | 2011-01-28 | 2012-08-16 | Globeride Inc | Fishing rod |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56133137A (en) * | 1980-03-21 | 1981-10-19 | Mitsubishi Rayon Co Ltd | Molding method of pipe |
| JPS58212936A (en) * | 1983-04-18 | 1983-12-10 | 東レ株式会社 | Fiber reinforced resin tubular body |
| JPS5973683A (en) * | 1982-10-15 | 1984-04-25 | ヤマハ発動機株式会社 | Structure of plastic pipe |
-
1992
- 1992-08-17 JP JP4217833A patent/JP2622798B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56133137A (en) * | 1980-03-21 | 1981-10-19 | Mitsubishi Rayon Co Ltd | Molding method of pipe |
| JPS5973683A (en) * | 1982-10-15 | 1984-04-25 | ヤマハ発動機株式会社 | Structure of plastic pipe |
| JPS58212936A (en) * | 1983-04-18 | 1983-12-10 | 東レ株式会社 | Fiber reinforced resin tubular body |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3022351U (en) * | 1995-09-02 | 1996-03-22 | マミヤ・オーピー株式会社 | Club head mounting structure |
| JP2006288344A (en) * | 2005-04-14 | 2006-10-26 | Shimano Inc | Rod member of fishing rod |
| JP4493544B2 (en) * | 2005-04-14 | 2010-06-30 | 株式会社シマノ | Fishing rod |
| JP2012152187A (en) * | 2011-01-28 | 2012-08-16 | Globeride Inc | Fishing rod |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2622798B2 (en) | 1997-06-18 |
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