JP2004344142A

JP2004344142A - Fishing rod

Info

Publication number: JP2004344142A
Application number: JP2003148211A
Authority: JP
Inventors: Takafumi Harada; 孝文原田
Original assignee: Shimano Inc
Current assignee: Shimano Inc
Priority date: 2003-05-26
Filing date: 2003-05-26
Publication date: 2004-12-09
Anticipated expiration: 2023-05-26
Also published as: JP4270939B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fishing rod having a relatively simple structure of a fitting part of respective rod parts and capable of aiming at the light weight and economy of the rod. <P>SOLUTION: This fishing rod is equipped with a root rod 1 and extendable rods 2 joined as freely being taken in and out to the inside of the root rod 1. The root rod 1 has a nut member 5 mounted as freely attachable and detachable at the root rod side end part, and at the root rod side end part of the root rod 1, a plurality of splits extending in its axial direction are formed by taking an interval in its circumferential direction. The nut part 5 is an almost tubular member, and the inner circumferential surface of the root rod side is tapered as becoming smaller diameter on going to the root rod side. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、魚釣りに用いる釣竿に関する。特に、複数の竿体を振出形式に連結してなる釣竿に関する。
【０００２】
【従来の技術】
一般に、釣竿は複数の竿体を連結して一本の釣竿となっている。そして、このような釣竿の中には、振出形式と呼ばれる方式で竿体が連結されているものがある。振出形式の釣竿では、竿元側に位置する大径竿体の穂先側に小径竿体が連結される。小径竿体は大径竿体内に出し入れ自在に収納される。そして、小径竿体が穂先側に抜け落ちず、また、小径竿体を大径竿体の穂先側に引き出した際に両竿体を連結固定可能とするために、小径竿体の竿元側端部の外周面に嵌合雄部を、大径竿体の穂先側端部内周面に嵌合雌部を形成する（例えば、特許文献１参照）。
【０００３】
また、振出形式の釣竿の中でも、その用途にあわせて様々なタイプの釣竿が多様な機能を備えて提供されている。例えば、鮎釣り用の鮎竿や渓流竿などの延べ竿に於いては、仕掛けに係った魚を取込易くするために、釣竿の全長を釣り操作時に素早く変更できるような機能が付与されている。例えば、ある種の従来の鮎竿等は、元竿の竿元側端部に別途延伸竿が連結されている。この延伸竿は元竿内に収納した状態（収納状態）と、元竿内から手元側に引き出した状態（延伸状態）との何れにあっても元竿に連結固定可能である。そして、釣り操作の最中に状況に応じて釣人は延伸竿を出し入れして釣竿全体の長さを調整して釣りを行う（例えば、特許文献２等参照）。具体的には、従来のこのように釣竿の長さを調整可能な釣竿にあっては、収納状態に於いて、元竿の竿元側端部の内周面と延伸竿の竿元側の外周面とで相互に嵌着する構造になっている。延伸状態において、元竿の竿元側端部の内周面と延伸竿の穂先側端部の外周面とで相互に嵌着する構造になっている。
【０００４】
【特許文献１】
特開２００１−３１４１４２号公報
【０００５】
【特許文献２】
実用新案登録第３０２２４１１号公報
【０００６】
【発明が解決しようとする課題】
振出形式の釣竿においては、大径竿体と小径竿体とに嵌合雄部と嵌合雌部とを形成する場合には、それぞれの竿体を部分的に厚肉化し、素材の内径若しくは外径を調整し、嵌合雄部若しくは嵌合雌部を形成するのが一般的である。しかし、嵌合雄部と嵌合雌部とには、充分に嵌合するように精密な径合わせが必要となる。素材自体に対してこのような精密な径合わせを施すことは煩雑且つ高度な技術が必要とされる。このため、このような嵌合雄部と嵌合雌部との製造が釣竿のコスト上昇の一因となってきた。そこで、より簡易な構造の合わせ部分の提供が求められている。そして、このような嵌合雄部と嵌合雌部とに関する問題は、上述の釣竿の全長を釣り操作時に素早く変更できるような機能が付与されている釣竿においても同様である。
【０００７】
本発明の課題は、竿体同士の嵌合部分の構造が比較的簡易であり、軽量化・経済化を図り得る釣竿を提供することにある。
【０００８】
【課題を解決するための手段】
本発明にかかる釣竿は、筒状体である複数の竿体を順次連結してなる釣竿であって、元竿と、元竿の竿元側に元竿内に出入自在に連結された延伸竿とを備えている。延伸竿は元竿内に収納された収納状態，元竿の竿元側に引き出された延伸状態の何れにおいても元竿に固定可能である。
【０００９】
この元竿は、全体として先細りテーパの施された筒状体である本体部と、本体部の竿元側端部に脱着自在に装着されるナット部材とを有している。この本体部は、穂先側の内周面に軸方向の一定の範囲において径の変化しない部分である嵌合雌部を有し、また、竿元側端部には軸方向に延びる複数の割りが周方向に間隔を隔てて形成され、且つ、割りの穂先側に隣接する外周面には雄ねじ部が形成されている。一方、ナット部材は略筒状部材であって、穂先側の内周面が雄ねじ部に螺着自在な雌ねじ部分であり、竿元側に内周面が竿元側ほど小径化するテーパ面となっているテーパ部分を有している。
【００１０】
延伸竿は、本体部と、本体部の穂先側端部外周面に軸方向において径の変化しない部分であり嵌合雌部に嵌着可能な嵌合雄部と、嵌合雄部の竿元側に隣接して形成され竿元側ほど小径化するテーパ部とを有している。
この釣竿の元竿にあっては、ナット部材を本体部から取り外すと、本体部の素材の弾性によって、竿元側端部の割りが略軸長方向に延びる。この状態では、延伸竿を元竿の竿元側からその内部に挿入して取り付けることも、元竿から延伸竿を取り外すことも可能である。
【００１１】
一方、延伸竿を元竿内に組み込んだ状態で、ナット部材を本体部に装着し、ナット部材の雌ねじ部分を本体部の雄ねじ部に螺着させると、ナット部材のテーパ部分により、本体部の割りが形成されている竿元側端部が竿元側ほど小径化するような傾斜姿勢をとる。この傾斜姿勢をとった本体部の竿元側端部が、延伸竿のテーパ部に当接乃至嵌着し、延伸竿が元竿の竿元側に抜け出るのを抑える。また、この傾斜姿勢をとった本体部の竿元側端部が、延伸竿を元竿の竿元側に引き出した延伸状態において、延伸竿と元竿とを連結固定することになる。
【００１２】
なお、延伸竿を元竿内に収納した収納状態においては、延伸竿の穂先側の嵌合雄部が元竿の嵌合雌部に嵌着し、延伸竿と元竿とが連結固定されることになる。
また、本発明の別の釣竿は、筒状体である複数の竿体を順次連結してなる釣竿であって、第１竿体と、第１竿体の穂先側に前記第１竿体内に出入自在に連結された第２竿体とを備えている。この第２竿体は第１竿体内に収納された収納状態，第１竿体の穂先側に引き出された延伸状態の何れにおいても前記第１竿体に固定可能である。
【００１３】
第１竿体は、全体として先細りテーパの施された筒状体である本体部と、本体部の穂先側端部に他の部分に比較して急な先細りテーパが施された嵌合雌部とを有している。
第２竿体は、全体として先細りテーパの施された筒状体である本体部と、本体部の竿元側端部に脱着自在に装着される底栓とを有している。この第２竿体の本体部は、竿元側端部に軸方向に延びる複数の割りが周方向に間隔を隔てて形成され、且つ、割りの穂先側に隣接する内周面には雌ねじ部が形成されている。一方、底栓は、穂先側外周面に雌ねじ部に螺着自在な雄ねじ部分と、竿元側外周面に竿元側ほど大径化するテーパが施されたテーパ部分とを有している。
【００１４】
この釣竿の第２竿体にあっては、底栓を本体部から取り外すと、本体部の素材の弾性によって、竿元側端部の割りが略軸長方向に延びる。一方、底栓を本体部に装着し、底栓の雄ねじ部分を元上竿の雌ねじ部に螺着させると、底栓のテーパ部分により、第２竿体の本体部の割りが形成されている竿元側端部が竿元側ほど大径化するような傾斜姿勢をとる。この傾斜姿勢をとった第２竿体の本体部の竿元側端部が、第１竿体の穂先側端部の嵌合雌部に当接乃至嵌着し、第２竿体が第１竿体の穂先側に抜け出るのを抑える。また、この傾斜姿勢をとった第２竿体の本体部の竿元側端部が、第２竿体を第１竿体の穂先側に引き出した延伸状態において、第２竿体と第１竿体とを連結固定することになる。このような底栓を利用して第２竿体の竿元側端部に傾斜姿勢をとらせることで、第２竿体の素材自体の径の加工が簡素化され、構造の簡易化及び低コスト化が可能になる。また、第２竿体の竿元側端部の割りが形成された部分を第１竿体に嵌着させるので、第２竿体と第１竿体との不当な固着も抑えられる。
【００１５】
さらに、本発明の別の釣竿は、筒状体である複数の竿体を順次連結してなる釣竿であって、第１竿体と、第１竿体の穂先側に第１竿体内に出入自在に連結された第２竿体とを備えている。この第２竿体は第１竿体内に収納された収納状態，第１竿体の穂先側に引き出された延伸状態の何れにおいても第１竿体に固定可能である。
【００１６】
第１竿体は、全体として先細りテーパの施された筒状体である本体部と、本体部の穂先側端部に他の部分に比較して急な先細りテーパが施された嵌合雌部とを有している。
一方の第２竿体は、全体として先細りテーパの施された筒状体である本体部と、本体部の竿元側端部に脱着自在に装着される底栓とを有している。この第２竿体の本体部は、竿元側端部外周面より軸方向に一定の範囲で一段外径が小径化した小径部分が形成され、且つ、竿元側端部内周面に雌ねじ部が形成され、小径部分に装着される外周面が竿元側ほど大径化するテーパ面となっているコーンを有する。底栓は、雌ねじ部に螺着自在な雄ねじ部分と、雄ねじ部の竿元側に位置しコーンを係止する頭部とを有している。
【００１７】
この釣竿にあっては、第２竿体を第１竿体の穂先側に引き出した延伸状態において、本体部と異なる別の脱着自在なコーンが、第１竿体の嵌合雌部に当接乃至嵌着する。コーンは底栓によって第２竿体の小径部分に固定されており、底栓を第２竿体の本体部から取り外すことで、コーンを第２竿体の本体部から取り外し得る。竿体自体とことなるコーンによって竿体の嵌着を演出することで、コーンを竿体素材とは別途成形加工でき、構造の簡易化及び低コスト化が可能になる。また、長期の使用によってコーンが摩耗等して嵌合力が低下しても、コーンを交換することで、第２竿体と第１竿体との嵌合力を再生し得る。
【００１８】
【発明の実施の形態】
［第１実施形態］
以下、本発明の第１実施形態について図面を参照しつつ説明する。
本発明の第１実施形態を採用した釣竿は、鮎釣り等に用いられる釣竿であり、図１に示すように、元竿１と、元竿１の竿元側から出し入れ自在に連結される延伸竿２と、元竿１の穂先側から出し入れ自在に連結される元上竿３とを有している。また、元上竿３の穂先側にもさらに複数の竿体（中竿，穂先竿等）が連結される（図示せず）。これらの各竿体は炭素繊維等の強化繊維に合成樹脂を含浸させたプリプレグ素材を焼成して形成されている。
【００１９】
元竿１より穂先側の各竿体はいわゆる振出形式で連結されており、穂先側の竿体から順次竿元側に位置する竿体内に出し入れ自在である。それぞれ穂先側に位置する竿体の竿元側端部外周面を竿元側に隣接する竿体の穂先側内周面に嵌着させて相互に固定可能である。最も穂先側に位置する穂先竿の穂先側端部には釣糸係止具が配置されている。
【００２０】
（元竿１について）
元竿１は全体として穂先側ほど小径化するようなテーパが施された筒状体である。穂先側端部にあってはいわゆる振出形式で元上竿３と元竿１とを連結するべく、振出形式用の嵌合部分が形成される（図示せず）。また、竿元側端部にはナット部材５が装着されている。
【００２１】
元竿１の軸方向の中央付近乃至中央付近より穂先側の内周面においては、図４に示すような、嵌合雌部１ａが形成されている。この嵌合雌部１ａは、その内径が軸方向において一定の範囲で変化しない部分である。後述の延伸竿２が収納状態において嵌着する部分である。
また、元竿１の竿元側端部は、図２，図３及び図５に示すように、外周面が他の部分に比較して一段小径化しており、ここにねじ溝が形成されて雄ねじ部１ｂとなっている。さらに、雄ねじ部１ｂの竿元側の部分には、ねじ溝が形成されていない部分１ｃがあり、この部分１ｃには、軸方向に延びる複数の割りが周方向に間隔を隔てて竿元側端部から形成されている。例えば、この複数の割りは、図５に示すように、３つの割りが周方向に等間隔に変位して形成されている。
【００２２】
ナット部材５は、上述の雄ねじ部１ｂに脱着自在に螺着している略筒状部材である。このナット部材５は穂先側の内周面が雄ねじ部１ｂに螺着自在な雌ねじ部分５ａとなっている。また、ナット部材５は竿元側に内周面が竿元側ほど小径化するテーパ面となっているテーパ部分５ｂを有している。このテーパ部分５ｂのテーパは、後述する延伸竿２に合わせて調整されている。このようなナット部材５を元竿１に装着することで、割りの入っている部分１ｃがテーパ部分５ｂのテーパに合わせて竿元側ほど小径化するようなテーパを形成することになる（図３参照）。なお、ナット部材５の外周面の形状は任意に設定可能であるが、外周面も竿元側ほど小径化するようなテーパ面としてもよい。
【００２３】
（延伸竿２について）
図１に示すように、延伸竿２は、元竿１の竿元側からその内部に挿入される挿入部６と、挿入部６の竿元側に連結される太径のパイプ状部材であるグリップ部７とからなる。延伸竿２は元竿１の竿元側に向かって出し入れ自在に連結されている。
【００２４】
挿入部６は元竿１内に挿入可能な外径の筒状体である。挿入部６は穂先側ほど小径化するような部材とする。元上竿３を元竿１内に穂先側から収納した際に、元上竿３が延伸竿２内に収納可能なようになっている。なお、挿入部６の穂先側端部には、元上竿３がその内部に円滑に案内されるようなゴムカバーを装着してもよい。
【００２５】
この挿入部６の穂先側端部は、図２及び図４に示すように、軸方向の一定範囲で外径が他の部分より大径化されており、ここが嵌合雄部６ａとなっている。この嵌合雄部６ａの外径は、上述の元竿１の嵌合雌部１ａに合わせて調整されている。また、嵌合雄部６ａの竿元側は竿元側ほど小径化するようなテーパ面６ｂとなっている。このテーパ面６ｂは、元竿１の割りの入っている部分１ｃのテーパに合わせて調整される。
【００２６】
グリップ部７は、挿入部６より大径且つ元竿１の外周面に合致するような径のパイプ状部材である。元竿１や挿入部６と同様に繊維強化樹脂等から構成してもよいが、別途金属素材などから構成してもよい。挿入部６の竿元側端部に挿入部６が穂先側から挿入された状態で螺着等の周知手法によってグリップ部７は脱着自在に連結されている。グリップ部７は挿入部６が完全に挿入された状態でも、グリップ部７の穂先側端部に挿入部６が部分的に挿入された状態でもよい。なお、グリップ部７は脱着不能に連結されていてもよい。
【００２７】
（元竿１と延伸竿２との関係について）
この釣竿の元竿１にあっては、ナット部材５を本体部から取り外すと、元竿１の素材の弾性によって、竿元側端部の割りの入っている部分１ｃが略軸長方向に延びる（図３参照）。この状態では、延伸竿２を元竿１の竿元側からその内部に挿入して取り付けることも、逆に、元竿１から延伸竿２を取り外すことも可能である。
【００２８】
一方、延伸竿２を元竿１内に組み込んだ状態で、ナット部材５を元竿１の雄ねじ部１ｂに螺着させると、ナット部材５のテーパ部分５ｂにより、割りが形成されている部分１ｃが竿元側ほど小径化するような傾斜姿勢をとる（図２参照）。そして、延伸竿２を元竿１の竿元側に引き出した延伸状態においては、この傾斜姿勢をとっている割りが形成されている部分１ｃが、延伸竿２の挿入部６のテーパ部６ｂに当接乃至嵌着し、延伸竿２が元竿１の竿元側に抜け出るのを抑える。また、延伸竿２と元竿１とを連結固定することになる。
【００２９】
他方、元竿１の穂先側に向かって延伸竿２を元竿１内に収納した収納状態においては、延伸竿２の挿入部６の穂先側の嵌合雄部６ａが元竿１の嵌合雌部１ａに嵌着し（図４参照）、延伸竿と元竿とが連結固定されることになる。
なお、このような収納状態にあって、元竿１と延伸竿２との連結固定力を向上させるために、ナット部材５の竿元側端部内周面と延伸竿２の挿入部６の外周面とが係止し得るように、凹凸をそれぞれに形成してもよい。また、両者に多条ねじなどを形成しても良い。
［第２実施形態］
本発明の第２実施形態を採用した釣竿について説明する。
【００３０】
この釣竿も第１実施形態と同様に、元竿１の穂先側に振出形式に元上竿３が連結されている（図１参照）。
（元竿１について）
図６に示すように、元竿１は、その穂先側端部に他の部分のテーパに比較して急テーパで穂先側ほど小径化する部分が形成されている。この部分の内周面が元上竿３のための嵌合雌部１ｄである。このような急テーパ部分は、予め、穂先側端部に所定の急テーパを施した芯材を用いて、その芯材に炭素繊維強化樹脂を巻回し焼成して元竿１を製造することなどによって、形成可能である。
【００３１】
（元上竿３について）
元上竿３は、元竿１の穂先側に出し入れ自在に（いわゆる振出形式で）連結される全体として先細りテーパの施された筒状体である。その竿元側端部には底栓２０が脱着自在に装着されている。
元上竿３の竿元側端部には、軸方向に延びる複数の割りが周方向に間隔を隔てて竿元側端部から形成されている。この割りは、上記第１実施形態の元竿１と同様に、周方向に等間隔で３〜５程度形成する。さらに、このような割りが形成されているその穂先側に隣接する内周面には、ねじ溝が形成されており、ここが雌ねじ部３ａとなっている。
【００３２】
底栓２０は、元上竿３の竿元側端部を閉塞する栓部材である。図６に示すように、穂先側外周面に形成される雌ねじ部３ａに螺着自在な雄ねじ部分２０ａと、竿元側のテーパ部分２０ｂとからなる。テーパ部分２０ｂは、竿元側外周面が竿元側ほど大径化するようにテーパが施されている部分である。このテーパ部分２０ｂのテーパは上述の元竿１の穂先側端部のテーパに合わせて調整されている。なお、必要に応じて、尻栓２０にはワッシャーなどが装着される。
【００３３】
（元竿１と元上竿３との関係について）
この釣竿の元上竿３にあっては、底栓２０を取り外すと、元上竿３の素材の弾性によって、竿元側端部の割りが形成されている部分が略軸長方向に延びる。一方、底栓２０を元上竿３に装着し、底栓２０の雄ねじ部分２０ａを元上竿３の雌ねじ部３ａに螺着させると、底栓２０のテーパ部分２０ｂにより、元上竿２の割りが形成されている竿元側端部が竿元側ほど大径化するような傾斜姿勢をとる（図６参照）。この傾斜姿勢をとった元上竿３の竿元側端部は、元竿１の穂先側端部の嵌合雌部１ｄに当接乃至嵌着し、元上竿３が元竿１の穂先側に抜け出るのを抑える。また、元上竿３を元竿１の穂先側に引き出した際に、元上竿３と元竿１とを連結固定することになる。このような底栓２０を利用して元上竿３の竿元側端部に、嵌合部分を形成することで、元上竿３の素材自体の径の加工が簡素化され、構造の簡易化及び低コスト化が可能になる。さらに、元上竿３の竿元側端部の割りが形成された部分が元竿１の嵌合雌部１ｄに嵌着させるので、両竿体の不当な固着も生じにくくなる。
［第３実施形態］
さらに、第３実施形態として、第２実施形態の変形例を図７に示す。
【００３４】
この釣竿でも、元竿１の構造は上記第２実施形態と同様である。一方の元上竿１３にあっては、竿元側端部外周に、コーン１５と底栓３０が脱着自在に装着されている。
元上竿１３は、竿元側端部内周面にねじ溝が形成されている。また、竿元側端部の外周面の軸方向に一定の範囲で一段外径が小径化した小径部分が形成されている。この小径部分にコーン１５が装着されている。コーン１５は略円筒型の部材であり、例えば、ゴム性の合成樹脂等から形成されている。コーン１５は竿元側ほど外周面が大径化するテーパ面となっている。このテーパ面は元竿１の嵌合雌部１ｄのテーパに合わせて調整されている。
【００３５】
底栓３０は、元上竿１３の竿元側端部を閉塞する栓部材であり、元上竿１３に螺着自在な雄ねじ部分と、雄ねじ部の竿元側に位置しコーン１３を係止する頭部とを有している。頭部の外径は、コーン１５の竿元側端部の外径を超えない。
この釣竿にあっては、元上竿１３を元竿１の穂先側に引き出した延伸状態において、コーン１５が、元竿１の嵌合雌部１ｄに当接乃至嵌着する。コーン１５は底栓３０によって元上竿１３の小径部分に固定されており、底栓３０を元上竿１３から取り外すことで、コーン１３を元上竿１３から取り外し得る。このような竿体自体とことなるコーン１３によって元上竿１３の元竿１に対する嵌着を演出することで、コーン１３を竿体素材とは別途成形加工でき、構造の簡易化及び低コスト化が可能になる。また、長期の使用によってコーン１３が摩耗等して嵌合力が低下しても、コーン１３を交換することで、元竿１と元上竿１３との嵌合力を再生できる。
【００３６】
【発明の効果】
本発明によれば、竿体同士の嵌合部分の構造を簡易化でき、軽量化・経済化を図ることができる。
【図面の簡単な説明】
【図１】本発明の第１実施形態を採用した釣竿を示した図。
【図２】元竿１の竿元側端部を示した図。
【図３】ナット部材５を取り外した際の元竿１の竿元側端部を示した図。
【図４】元竿１の軸方向中央付近の断面図。
【図５】元竿１の竿元側端部を示した参考図。
【図６】本発明の第２実施形態を採用した釣竿の元竿１と元上竿３とを示した図。
【図７】本発明の第３実施形態を採用した釣竿の元竿１と元上竿１３とを示した図。
【符号の説明】
１元竿
２延伸竿
３，１３元上竿
１ａ嵌合雌部
１ｂ雄ねじ部
５ナット部材
６挿入部
６ａ嵌合雄部
２０，３０底栓[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a fishing rod used for fishing. In particular, the present invention relates to a fishing rod formed by connecting a plurality of rods in a swinging manner.
[0002]
[Prior art]
Generally, a fishing rod is formed by connecting a plurality of rod bodies into one fishing rod. In some of such fishing rods, a rod body is connected by a method called a swing type. In the swing type fishing rod, a small-diameter rod is connected to the tip of a large-diameter rod located on the rod base side. The small-diameter rod body is housed freely in and out of the large-diameter rod body. In order to prevent the small-diameter rod body from falling off to the tip side and to enable the two rod bodies to be connected and fixed when the small-diameter rod body is pulled out to the tip side of the large-diameter rod body, the end of the small-diameter rod body at the base end of the rod. A fitting male part is formed on the outer peripheral surface of the part, and a fitting female part is formed on the inner peripheral surface of the tip end of the large-diameter rod body (for example, see Patent Document 1).
[0003]
Further, among the fishing rods of the draw-out type, various types of fishing rods are provided with various functions according to the application. For example, in a total rod such as an ayu rod for a sweetfish fishing or a mountain stream rod, a function is provided so that the total length of the fishing rod can be quickly changed at the time of a fishing operation in order to make it easier to catch fish involved in the device. ing. For example, in a certain kind of conventional sweetfish rod or the like, an extension rod is separately connected to a rod base end of a former rod. The extended rod can be connected and fixed to the original rod in either a state of being stored in the original rod (storage state) or a state of being pulled out from the original rod to the hand side (extended state). Then, during the fishing operation, the angler puts the extension rod in and out according to the situation, adjusts the length of the entire fishing rod, and performs fishing (for example, see Patent Document 2). Specifically, in the conventional fishing rod in which the length of the fishing rod can be adjusted as described above, in the stored state, the inner peripheral surface of the rod base side end of the original rod and the rod base side of the extended rod are located. The structure is such that it fits with the outer peripheral surface. In the extended state, the inner peripheral surface of the rod-side end of the original rod and the outer peripheral surface of the tip-side end of the extended rod are fitted to each other.
[0004]
[Patent Document 1]
JP 2001-314142 A [0005]
[Patent Document 2]
Japanese Utility Model Registration No. 3022411
[Problems to be solved by the invention]
In the fishing rod of the swing-out type, when the fitting male part and the fitting female part are formed on the large-diameter rod body and the small-diameter rod body, each rod body is partially thickened, and the inner diameter of the material or Generally, the outer diameter is adjusted to form a fitting male portion or a fitting female portion. However, the fitting male part and the fitting female part require precise diameter adjustment so that they can be sufficiently fitted. Performing such precise diameter adjustment on the material itself requires complicated and sophisticated techniques. For this reason, the production of such a fitting male part and a fitting female part has contributed to an increase in the cost of the fishing rod. Therefore, it is required to provide a matching portion having a simpler structure. The problem with the fitting male portion and the fitting female portion is the same also in a fishing rod provided with a function of quickly changing the overall length of the fishing rod during a fishing operation.
[0007]
An object of the present invention is to provide a fishing rod in which the structure of the fitting portion between the rod bodies is relatively simple, and can be reduced in weight and economical.
[0008]
[Means for Solving the Problems]
A fishing rod according to the present invention is a fishing rod formed by sequentially connecting a plurality of rods that are cylindrical bodies, and includes an original rod, and an extended rod that is connected to the original rod side of the original rod so as to be able to enter and exit the original rod. And The extended rod can be fixed to the original rod in any of the stored state of being stored in the original rod and the extended state of being pulled out to the rod base side of the original rod.
[0009]
This base rod has a main body part which is a cylindrical body tapered as a whole, and a nut member detachably attached to a rod base end of the main body part. The main body has a fitting female portion which is a portion whose diameter does not change in a predetermined range in the axial direction on the inner peripheral surface on the tip side, and a plurality of split shafts extending in the axial direction are provided on the rod-side end. Are formed at intervals in the circumferential direction, and a male screw portion is formed on the outer peripheral surface adjacent to the tip side of the split. On the other hand, the nut member is a substantially cylindrical member, and the inner peripheral surface on the tip side is a female screw portion that can be screwed to the male screw portion, and the inner peripheral surface on the rod base side has a tapered surface whose diameter decreases toward the rod base side. It has a tapered portion.
[0010]
The extending rod has a body portion, a fitting male portion that is a portion whose diameter does not change in the axial direction on the outer peripheral surface of the tip side end of the body portion and can be fitted to the fitting female portion, and a rod base of the fitting male portion. And a tapered portion formed adjacent to the side and having a smaller diameter toward the base of the rod.
In the original rod of this fishing rod, when the nut member is removed from the main body, the split of the rod-side end portion extends substantially in the axial direction due to the elasticity of the material of the main body. In this state, it is possible to insert and attach the extended rod from the rod base side of the original rod to the inside thereof, or to remove the extended rod from the original rod.
[0011]
On the other hand, with the extension rod incorporated in the former rod, the nut member is attached to the main body, and the female screw portion of the nut member is screwed into the male screw portion of the main body. The rod-side end portion where the split is formed has an inclined posture such that the diameter becomes smaller toward the rod side. The rod-side end of the main body in this inclined position abuts or fits on the tapered portion of the stretched rod to prevent the stretched rod from slipping out to the rod-side of the former rod. In addition, the rod end of the main body in the inclined position, when the extended rod is pulled out to the rod base side of the original rod, connects and fixes the extended rod and the original rod.
[0012]
In the storage state where the stretched rod is housed in the former rod, the fitting male part on the tip side of the stretched rod is fitted to the female fitting part of the former rod, and the stretched rod and the former rod are connected and fixed. Will be.
Further, another fishing rod of the present invention is a fishing rod formed by sequentially connecting a plurality of rods that are cylindrical bodies, and includes a first rod, and a tip end side of the first rod inside the first rod. And a second rod body connected so as to be able to enter and exit freely. The second rod body can be fixed to the first rod body in either the housed state stored in the first rod body or the extended state extended to the tip side of the first rod body.
[0013]
The first rod body has a main body part which is a cylindrical body having a tapered taper as a whole, and a mating female part which is provided with a tapered taper at an end of the main body on the tip side as compared with other parts. And
The second rod body has a main body that is a cylindrical body that is tapered as a whole, and a bottom plug that is detachably attached to a rod-side end of the main body. The main body of the second rod body has a plurality of splits extending in the axial direction formed at an end portion on the rod base side at an interval in the circumferential direction, and a female screw portion is formed on an inner peripheral surface adjacent to the tip side of the split. Is formed. On the other hand, the bottom plug has an external thread portion that can be screwed to the female screw portion on the tip outer peripheral surface, and a tapered portion that is tapered on the rod outer peripheral surface such that the diameter increases toward the rod side.
[0014]
In the second rod body of this fishing rod, when the bottom plug is removed from the main body, the split at the base end of the rod extends substantially in the axial direction due to the elasticity of the material of the main body. On the other hand, when the bottom plug is attached to the main body and the male screw portion of the bottom plug is screwed into the female screw portion of the original upper rod, the split of the main body of the second rod body is formed by the tapered portion of the bottom plug. The rod-side end has an inclined posture such that the diameter increases toward the rod side. The rod-side end of the body portion of the second rod body in this inclined position abuts or fits on the mating female portion of the tip-side end of the first rod body, and the second rod body is in the first position. Suppress the escape to the tip side of the rod. Further, in the extended state in which the rod end side of the main body of the second rod body in this inclined posture is pulled out to the tip side of the first rod body, the second rod body and the first rod body are extended. The body will be connected and fixed. By using such a bottom plug to make the end of the second rod body closer to the base of the rod, the processing of the diameter of the material itself of the second rod body is simplified, and the structure is simplified and the low Cost reduction becomes possible. Further, since the portion of the second rod body where the rod base end is formed is fitted to the first rod body, the second rod body and the first rod body are also prevented from being improperly fixed.
[0015]
Further, another fishing rod according to the present invention is a fishing rod formed by sequentially connecting a plurality of rods that are cylindrical bodies, and includes a first rod, and a tip end of the first rod entering and exiting the first rod. And a second rod body connected freely. The second rod body can be fixed to the first rod body in either the housed state where it is housed in the first rod body or the extended state where the second rod body is pulled out toward the tip of the first rod body.
[0016]
The first rod body has a main body part which is a cylindrical body having a tapered taper as a whole, and a mating female part which is provided with a tapered taper at an end of the main body on the tip side as compared with other parts. And
The second rod body has a main body that is a cylindrical body that is tapered as a whole, and a bottom plug that is detachably attached to a rod-side end of the main body. The main body of the second rod body has a small-diameter portion whose outer diameter is reduced by one step within a certain range in the axial direction from the outer peripheral surface of the rod-side end, and a female screw portion is formed on the inner peripheral surface of the rod-side end. Is formed, and the outer peripheral surface mounted on the small diameter portion has a cone whose diameter becomes larger toward the base of the rod. The bottom plug has a male screw portion that can be screwed to the female screw portion, and a head portion that is located on the rod side of the male screw portion and locks the cone.
[0017]
In this fishing rod, another detachable cone different from the main body is brought into contact with the mating female portion of the first rod in the extended state in which the second rod is pulled out to the tip of the first rod. Or fit. The cone is fixed to the small diameter portion of the second rod body by the bottom plug, and the cone can be removed from the main body of the second rod body by removing the bottom plug from the main body of the second rod body. By producing the fitting of the rod body by the cone which is different from the rod body itself, the cone can be formed separately from the rod body material, and the structure can be simplified and the cost can be reduced. Further, even if the cone is worn out due to long-term use and the fitting force is reduced, the fitting force between the second rod and the first rod can be regenerated by replacing the cone.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
A fishing rod adopting the first embodiment of the present invention is a fishing rod used for sweetfish fishing and the like, and as shown in FIG. It has a pole 2 and an upper pole 3 which is connected to be able to move in and out of the tip of the former pole 1. Further, a plurality of rod bodies (middle rod, head rod, etc.) are also connected to the tip side of the former pole 3 (not shown). Each of these rod bodies is formed by firing a prepreg material in which a synthetic resin is impregnated with reinforcing fibers such as carbon fibers.
[0019]
Each rod body on the tip side of the main rod 1 is connected in a so-called swinging-out manner, and can be put in and out of the rod body located on the rod base side sequentially from the rod body on the tip side. The outer peripheral surface of the rod end side of the rod body located on the tip side is fitted to the inner peripheral surface of the tip side of the rod body adjacent to the rod side and can be fixed to each other. A fishing line locking device is disposed at the tip end of the tip pole located closest to the tip side.
[0020]
(About Motopole 1)
The main rod 1 is a cylindrical body that is tapered so that the diameter decreases toward the tip as a whole. At the tip end side, a fitting part for a swing-out type is formed (not shown) so as to connect the former rod 3 and the former rod 1 in a so-called swing-out manner. A nut member 5 is attached to the rod base end.
[0021]
As shown in FIG. 4, a fitting female portion 1 a is formed on the inner peripheral surface on the tip side from the vicinity of the center of the main rod 1 in the axial direction or the vicinity of the center. The fitted female portion 1a is a portion whose inner diameter does not change within a certain range in the axial direction. This is a portion to which a stretching rod 2 described below is fitted in a stored state.
Further, as shown in FIGS. 2, 3, and 5, the outer end surface of the rod end side of the rod 1 is one step smaller in diameter than other parts, and a thread groove is formed here. It is a male thread portion 1b. Further, the portion of the male screw portion 1b on the rod base side has a portion 1c in which no thread groove is formed, and in this portion 1c, a plurality of splits extending in the axial direction are provided at intervals in the circumferential direction on the rod base side. It is formed from the end. For example, as shown in FIG. 5, the plurality of splits are formed by displacing three splits at equal intervals in the circumferential direction.
[0022]
The nut member 5 is a substantially cylindrical member that is detachably screwed onto the above-described male screw portion 1b. The inner peripheral surface of the nut member 5 on the tip side is a female screw portion 5a which can be screwed to the male screw portion 1b. In addition, the nut member 5 has a tapered portion 5b on the rod base side, the inner peripheral surface of which is a tapered surface whose diameter decreases toward the rod base side. The taper of the tapered portion 5b is adjusted according to the stretching rod 2 described later. By attaching such a nut member 5 to the original rod 1, a tapered portion 1c is formed such that the diameter of the split portion 1c becomes smaller toward the rod base side in accordance with the taper of the tapered portion 5b (FIG. 3). The shape of the outer peripheral surface of the nut member 5 can be arbitrarily set, but the outer peripheral surface may also be a tapered surface whose diameter becomes smaller toward the base of the rod.
[0023]
(About the extension rod 2)
As shown in FIG. 1, the extending rod 2 is an insertion portion 6 inserted into the original rod 1 from the rod side and a large-diameter pipe-shaped member connected to the rod side of the insertion portion 6. And a grip portion 7. The extension rod 2 is connected so as to be able to freely move in and out toward the rod base side of the original rod 1.
[0024]
The insertion portion 6 is a cylindrical body having an outer diameter that can be inserted into the original rod 1. The insertion portion 6 is a member whose diameter decreases toward the tip side. When the former rod 3 is stored in the former rod 1 from the tip side, the former rod 3 can be stored in the extended rod 2. In addition, a rubber cover may be attached to the tip end side of the insertion portion 6 so that the upper pole 3 can be smoothly guided inside the tip.
[0025]
As shown in FIGS. 2 and 4, the outer end of the tip of the insertion portion 6 has an outer diameter larger than that of the other portion within a certain range in the axial direction, and serves as a fitting male portion 6a. ing. The outer diameter of the male fitting portion 6a is adjusted according to the female fitting portion 1a of the original rod 1 described above. The rod side of the fitting male portion 6a has a tapered surface 6b whose diameter becomes smaller toward the rod side. The tapered surface 6b is adjusted according to the taper of the part 1c where the split of the original rod 1 is included.
[0026]
The grip portion 7 is a pipe-shaped member having a diameter larger than that of the insertion portion 6 and having a diameter matching the outer peripheral surface of the original rod 1. Like the main rod 1 and the insertion section 6, it may be made of fiber reinforced resin or the like, or may be made of a separate metal material or the like. The grip portion 7 is detachably connected to the rod base end of the insertion portion 6 by a well-known method such as screwing in a state where the insertion portion 6 is inserted from the tip side. The grip portion 7 may be in a state where the insertion portion 6 is completely inserted, or may be in a state where the insertion portion 6 is partially inserted into the end of the grip portion 7 on the tip side. The grip 7 may be irremovably connected.
[0027]
(Relationship between former rod 1 and extended rod 2)
In the original rod 1 of this fishing rod, when the nut member 5 is removed from the main body, the portion 1c of the rod-side end portion having a split extends substantially in the axial direction due to the elasticity of the material of the original rod 1. (See FIG. 3). In this state, the extension rod 2 can be inserted into and attached to the interior of the original rod 1 from the original side thereof, or, on the contrary, the extension rod 2 can be removed from the original rod 1.
[0028]
On the other hand, when the nut member 5 is screwed into the male screw portion 1b of the original rod 1 in a state where the extension rod 2 is incorporated in the original rod 1, a portion 1c in which a split is formed by the tapered portion 5b of the nut member 5 is formed. Take an inclined posture such that the diameter decreases toward the base of the rod (see FIG. 2). Then, in the stretched state in which the stretched rod 2 is pulled out toward the rod base side of the original rod 1, the portion 1 c where the split having the inclined posture is formed is formed in the tapered portion 6 b of the insertion portion 6 of the stretched rod 2. The extension rod 2 is abutted or fitted to prevent the extension rod 2 from coming out to the rod base side of the original rod 1. Further, the extension rod 2 and the original rod 1 are connected and fixed.
[0029]
On the other hand, in the housed state where the extension rod 2 is accommodated in the original rod 1 toward the tip of the original rod 1, the fitting male portion 6 a on the tip side of the insertion portion 6 of the extension rod 2 engages with the original rod 1. It is fitted to the female part 1a (see FIG. 4), and the extension rod and the original rod are connected and fixed.
In this storage state, in order to improve the connection fixing force between the original rod 1 and the extended rod 2, the inner peripheral surface of the rod-side end of the nut member 5 and the outer periphery of the insertion portion 6 of the extended rod 2 are improved. Unevenness may be formed on each surface so that the surface can be locked. Also, a multi-threaded screw or the like may be formed on both.
[Second embodiment]
A fishing rod employing the second embodiment of the present invention will be described.
[0030]
In this fishing rod, similarly to the first embodiment, the upper rod 3 is connected to the tip of the former rod 1 in a swinging manner (see FIG. 1).
(About Motopole 1)
As shown in FIG. 6, the tip portion of the original rod 1 is formed at the tip end side with a portion that is sharper in taper than the other portions and that has a smaller diameter toward the tip side. The inner peripheral surface of this portion is a fitting female portion 1d for the upper pole 3. Such a steeply tapered portion is manufactured by using a core material having a predetermined steeply tapered tip end, winding a carbon fiber reinforced resin around the core material and firing the core material to produce the original rod 1. Can be formed.
[0031]
(About former pole 3)
The former upper rod 3 is a cylindrical body tapered as a whole, which is connected to the front end side of the former rod 1 so as to be able to be taken in and out (in a so-called swing-out manner). A bottom plug 20 is detachably attached to the rod base end.
A plurality of splits extending in the axial direction are formed at the rod end side end of the former upper rod 3 at circumferential intervals from the rod end side end. This split is formed at equal intervals in the circumferential direction, about 3 to 5 as in the case of the original rod 1 of the first embodiment. Further, a thread groove is formed on the inner peripheral surface adjacent to the tip side where such a split is formed, and this is a female screw portion 3a.
[0032]
The bottom plug 20 is a plug member that closes the rod base end of the upper rod 3. As shown in FIG. 6, it is composed of a male screw portion 20a which can be screwed to the female screw portion 3a formed on the outer peripheral surface of the tip side, and a tapered portion 20b on the rod base side. The tapered portion 20b is a portion which is tapered so that the outer peripheral surface on the rod side becomes larger in diameter toward the rod side. The taper of the tapered portion 20b is adjusted according to the taper at the end of the original rod 1 on the tip side. In addition, a washer or the like is attached to the buttocks 20 as necessary.
[0033]
(Relationship between former pole 1 and former pole 3)
In the base rod 3 of this fishing rod, when the bottom plug 20 is removed, the portion where the end of the base end is formed extends substantially in the axial direction due to the elasticity of the material of the base rod 3. On the other hand, when the bottom plug 20 is attached to the former upper rod 3 and the male screw portion 20a of the lower plug 20 is screwed to the female screw portion 3a of the former upper rod 3, the tapered portion 20b of the lower plug 20 causes The rod-side end portion where the split is formed is inclined so that the diameter increases toward the rod side (see FIG. 6). The rod base end of the upper pole 3 in this inclined position abuts or fits on the mating female portion 1d of the tip end of the former rod 1 so that the former pole 3 is attached to the tip of the former rod 1. Suppress to escape to the side. When the former pole 3 is pulled out to the tip side of the former pole 1, the former pole 3 and the former pole 1 are connected and fixed. By using such a bottom plug 20 to form a fitting portion at the rod base end of the upper rod 3, the processing of the diameter of the material itself of the upper rod 3 is simplified, and the structure is simplified. And cost reduction can be achieved. Further, since the portion of the former upper rod 3 where the rod base side end is formed is fitted to the female fitting part 1d of the former rod 1, unduly fixation of both rod bodies is less likely to occur.
[Third embodiment]
FIG. 7 shows a modification of the second embodiment as a third embodiment.
[0034]
In this fishing rod, the structure of the former rod 1 is the same as that of the second embodiment. In the former upper rod 13, a cone 15 and a bottom plug 30 are detachably attached to the outer periphery of the rod-side end.
The upper rod 13 has a thread groove formed on the inner peripheral surface of the rod-side end. Further, a small-diameter portion is formed in which the outer diameter is reduced by one step within a certain range in the axial direction of the outer peripheral surface of the rod base end. A cone 15 is mounted on the small diameter portion. The cone 15 is a substantially cylindrical member, and is formed of, for example, a synthetic resin such as rubber. The cone 15 has a tapered surface in which the outer peripheral surface increases in diameter toward the base of the rod. This tapered surface is adjusted according to the taper of the fitting female portion 1d of the original rod 1.
[0035]
The bottom plug 30 is a plug member that closes the rod-side end of the upper rod 13, and includes a male screw portion that can be screwed to the upper rod 13, and is located on the rod side of the male screw section to lock the cone 13. And a head to be used. The outer diameter of the head does not exceed the outer diameter of the end of the cone 15 on the rod base side.
In this fishing rod, the cone 15 abuts or fits on the fitting female portion 1d of the former rod 1 in the extended state in which the former upper rod 13 is pulled out to the tip side of the former rod 1. The cone 15 is fixed to the small diameter portion of the upper pole 13 by the bottom plug 30. By removing the bottom plug 30 from the upper pole 13, the cone 13 can be removed from the upper pole 13. By effecting the fitting of the former upper rod 13 to the former rod 1 by such a different cone 13 from the rod itself, the cone 13 can be formed separately from the rod material, thereby simplifying the structure and reducing the cost. Becomes possible. Further, even if the cone 13 is worn and the fitting force is reduced due to long-term use, the fitting force between the former rod 1 and the former rod 13 can be regenerated by replacing the cone 13.
[0036]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the structure of the fitting part of rod bodies can be simplified, and weight reduction and economy can be achieved.
[Brief description of the drawings]
FIG. 1 is a view showing a fishing rod employing a first embodiment of the present invention.
FIG. 2 is a view showing a rod-side end of a rod 1. FIG.
FIG. 3 is a diagram showing a rod-side end of the former rod 1 when a nut member 5 is removed.
FIG. 4 is a sectional view of the vicinity of the axial center of the original rod 1.
FIG. 5 is a reference view showing a rod base side end of the former rod 1;
FIG. 6 is a view showing a former rod 1 and a former upper rod 3 of a fishing rod employing a second embodiment of the present invention.
FIG. 7 is a view showing a former rod 1 and a former rod 13 of a fishing rod employing a third embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Original rod 2 Extension rod 3, 13 Original upper rod 1a Fitting female part 1b Male screw part 5 Nut member 6 Insertion part 6a Fitting male part 20, 30 Bottom plug

Claims

A fishing rod formed by sequentially connecting a plurality of cylindrical rods,
An original rod, and an extended rod connected to the original rod on the original side of the original rod so as to be able to enter and exit the original rod, wherein the extended rod is stored in the original rod, It can be fixed to the former rod in any of the extended states pulled out to the side,
The main rod has a main body portion that is a cylindrical body having a tapered taper as a whole, and a nut member detachably attached to a rod-side end of the main body portion,
The main body portion has a fitting female portion which is a portion whose diameter does not change within a certain range in the axial direction on the inner peripheral surface on the tip side, and a plurality of split portions extending in the axial direction at the rod base end portion. Are formed at intervals in the circumferential direction, and a male screw portion is formed on the outer peripheral surface adjacent to the tip side of the split,
The nut member is a substantially cylindrical member, and a female screw portion which can be screwed to the male screw portion on the inner peripheral surface on the tip side, and a tapered surface in which the inner peripheral surface on the rod base side has a smaller diameter as the rod base side. Having a tapered portion,
The extension rod includes a main body, a fitting male portion that is a portion whose diameter does not change in the axial direction on an outer peripheral surface of a tip side end portion of the main body, and is fittable to the fitting female portion; A fishing rod having a tapered portion formed adjacent to the rod base side of the section and having a smaller diameter toward the rod base side.

A fishing rod formed by sequentially connecting a plurality of cylindrical rods,
A first rod body, and a second rod body connected to the tip of the first rod body so as to be able to move in and out of the first rod body, wherein the second rod body is housed in the first rod body. It can be fixed to the first rod body in any of the stored state and the extended state pulled out to the tip side of the first rod body,
The first rod body has a main body portion that is a cylindrical body having a tapered taper as a whole, and a fitting in which a tip portion side end portion of the main body portion is provided with a steeply tapered taper compared to other portions. And a female part,
The second rod body has a main body that is a cylindrical body that is tapered as a whole, and a bottom plug that is detachably attached to a rod-side end of the main body,
In the main body of the second rod body, a plurality of splits extending in the axial direction are formed at the rod end side end portion at intervals in the circumferential direction, and on the inner peripheral surface adjacent to the tip side of the split. Has a female thread,
The bottom plug has a male screw portion that can be screwed onto the female screw portion formed on the outer peripheral surface of the tip side, and a tapered portion that is tapered on the outer peripheral surface of the rod base such that the diameter increases toward the rod side. A fishing rod.

A fishing rod formed by sequentially connecting a plurality of cylindrical rods,
A first rod body, and a second rod body connected to the tip of the first rod body so as to be able to move in and out of the first rod body, wherein the second rod body is housed in the first rod body. It can be fixed to the first rod body in any of the stored state and the extended state pulled out to the tip side of the first rod body,
The first rod body has a main body portion that is a cylindrical body having a tapered taper as a whole, and a fitting in which a tip portion side end portion of the main body portion is provided with a steeply tapered taper compared to other portions. And a female part,
The second rod body has a main body that is a cylindrical body that is tapered as a whole, and a bottom plug that is detachably attached to a rod-side end of the main body,
The main body of the second rod body has a small-diameter portion in which the outer diameter is reduced by one step in a certain range in the axial direction on the outer peripheral surface of the rod-side end, and is formed on the inner peripheral surface of the rod-side end. A female thread portion is formed, and the outer peripheral surface attached to the small-diameter portion has a cone that is a tapered surface whose diameter increases toward the base of the rod,
The fishing rod according to claim 1, wherein the bottom plug has a male screw portion that can be screwed to the female screw portion, and a head that is located on a rod base side of the male screw portion and locks the cone.