JP2004344141A

JP2004344141A - Fishing rod

Info

Publication number: JP2004344141A
Application number: JP2003148210A
Authority: JP
Inventors: Takafumi Harada; 孝文原田; Nobuyoshi Utsuno; 信義宇都野
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: JP4105035B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fishing rod having an adjustable whole length and hardly causing a slack of its bottom plug. <P>SOLUTION: This fishing rod is equipped with a root rod 1 having a tubular body part 1a, a female screw part 1b formed with a screw on its inner circumferential surface of the ear side end part of the body part 1a, where its inner diameter becomes a larger diameter than those of the other parts, and a bottom plug 10 capable of being attached and detached freely to the female screw part 1b of the root rod 1. The bottom plug 10 is a part of a tubular part opening towards the ear side and has a tubular part 13 whose different kind surface at the ear side becomes a contact part 13a capable of making a contact with the inner circumferential surface of the body part 1a of the root rod 1 and the outer circumferential surface of the root rod side of it becomes a male screw part 13b screwing with the female screw part 1b. On the contacting part 13a of the tubular part 13, a plurality of splits extending from the ear side end part in its axial direction are formed by taking an interval in its circumferential direction. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は竿体を振出形式に連結してなる釣竿、特に、釣竿全体の長さを調整可能としている釣竿に関する。
【０００２】
【従来の技術】
一般に、釣竿は複数の筒状体である竿体を連結して一本の釣竿となっている。このような複数の竿体を連結する方式としては、振出形式と呼ばれるものがある。この振出形式とは、複数の筒状の竿体が穂先側の竿体から順次竿元側の竿体内に挿入可能にしている。釣りを行う際には各竿体を順次穂先側に引き出して嵌合固定して一本の竿体として用いる。一方、収納時には穂先側の竿体を順次竿元側の竿体内に収納してコンパクトな状態とする。
【０００３】
さらに、このような従来の振出形式の釣竿には、竿全体の長さを変化させて釣りを行えるようにしたものがある。例えば、このような釣竿の元竿とその穂先側に連結される元上竿とにおいては、元竿の竿元側端部に装着される尻栓に元上竿の竿元側端部を装着できるようにしている。即ち、ある種の釣竿では、元上竿を元竿内に収納した際に、元上竿２の竿元側端部を尻栓に嵌着させる。そして、元竿の穂先側に連結される元上竿が穂先側に引き出された状態（以下「延伸状態」という）と元上竿が元竿内に挿入された状態（以下「収納状態」という）とのいずれの状態においても、元上竿と元竿とは互いに嵌合固定可能であり、状況に応じて竿全体の長さを変化させて釣りを行えるのである（例えば、特許文献１参照）。
【０００４】
【特許文献１】
特開２０００−３５４４３７号公報
【０００５】
【発明が解決しようとする課題】
このような尻栓に元上竿を嵌着させるタイプの釣竿において生じる問題の１つに、元上竿を元竿内に収納した際の元上竿の尻栓への脱着に際し、尻栓の元竿への螺着が緩んでしまうということがある。即ち、元上竿を尻栓に装着し若しくは取り外す際には、元上竿を周方向にひねりながら元上竿の尻栓への脱着を行うことが多い。このような周方向への元上竿のひねりによって、尻栓の元竿への螺着が緩まってしまうことがある。この尻栓の緩みは尻栓の元竿からの落下や紛失などを引き起こしかねない。
【０００６】
また、このように釣竿全体の長さを調整するための釣竿に限らず、一般に、釣竿の尻栓は、釣竿の竿元側端部を釣人が腹部に当てて釣り操作を行うこともあるので、釣りをおこなっている間に緩んでしまう場合もある。
本発明の課題は、釣竿全体の長さを調整可能であり、且つ尻栓の緩みも生じ難い釣竿を提供することにある。
【０００７】
【課題を解決するための手段】
本発明の釣竿は、筒状の本体部，及び本体部の竿元側端部に於いて他の部分より内径が大径化してその内周面にねじ溝が形成されている雌ねじ部を有する第１竿体と、第１竿体の雌ねじ部に脱着自在に装着される尻栓とを備えている。この尻栓は、穂先側に向かって開口する筒状の部分であって、穂先側外周面が第１竿体の本体部の内周面に当接可能な当接部分になっており、竿元側外周面が雌ねじ部に螺着する雄ねじ部分となっている筒部と、筒部の竿元側に連続する頭部とを有し、筒部の当接部分に穂先側端部から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ている。
【０００８】
この釣竿では、尻栓の雄ねじ部分を第１竿体の雌ねじ部に螺着させて、尻栓を脱着自在に第１竿体に装着している。尻栓の筒部を第１竿体の竿元側に挿入し、雌ねじ部に雄ねじ部分を螺着させて、雄ねじ部分を雌ねじ部に完全に締め込むと、筒部の当接部分が第１竿体の本体部の内周面に当接する。この当接部分と本体部との摩擦力で、尻栓のねじの緩みが抑えられる。釣りの最中に、第１竿体の竿元側端部を腹部に押しあてながら釣人が釣りをおこなっても、尻栓は不当に緩み難い。
【０００９】
また、本発明の別の釣竿は、第１竿体の穂先側に振出形式に連結される第２竿体をさらに備えている。筒部は穂先側に向かって開口する第１筒状部と、第１筒状部の内部に位置し穂先側に向かって開口する第２筒状部とを有している。そして、当接部分及び雄ねじ部分は第１筒状部の外周面に形成されており、第２筒状部の外周面に第２竿体の竿元側端部内周面が嵌着自在である。
【００１０】
この釣竿では、必要に応じて、第２竿体の穂先側にさらに他の竿体が振出形式に連結される。そして、各竿体を順次第１竿体から穂先側に引き出した際には、従来の振出形式の釣竿と同様に順次嵌合されて固定され、一本の釣竿として使用できる。一方、他の竿体及び第２竿体を第１竿体内に収納すれば、コンパクトな状態となる。さらにまた、この第２竿体と第１竿体とに於いては、第２竿体を第１竿体内に収納した際に、尻栓の筒部の第２筒状部の外周面に（即ち、第１筒状部と第２筒状部との間に）第２竿体の竿元側端部が嵌着して固定される。このようにして、第２竿体は第１竿体内に収納した状態でも第１竿体に連結固定され、その余の竿体を穂先側に引き出して、釣竿全体の長さを調整して釣りをおこなうことが可能となる。
【００１１】
この場合において、第２竿体の尻栓へ嵌着し若しくはその嵌着を解除するに当たって、第２竿体を周方向にねじる等しても、尻栓の第１筒状部の当接部分が尻栓の不当な周方向への回転を妨げ、尻栓の不当な緩みが防止される。
また、本発明の別の釣竿は、第２竿体の穂先側に振出形式に連結される第３竿体をさらに備えている。筒部の第２筒状部の外周面は穂先側の小径部分と竿元側の大径部分との２段構造であり、穂先側の小径部分に第３竿体の竿元側端部内周面が嵌着自在であり、竿元側の大径部分に前記第２竿体の竿元側端部内周面が嵌着自在である。
【００１２】
この釣竿では、さらに、第３竿体を尻栓の第２筒状部の外周面の穂先側に嵌着させることができる。第２竿体及び第３竿体の両者を尻栓に嵌着させることで、釣竿全体の長さを３段にわたって変化させることが可能となる。この場合において、第２竿体及び／又は第３竿体の尻栓へ嵌着し若しくはその嵌着を解除するに当たって、第２竿体及び／又は第３竿体を周方向にねじる等しても、尻栓の第１筒状部の当接部分が尻栓の不当な周方向への回転を妨げ、尻栓の不当な緩みが防止される。
【００１３】
【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、複数の竿体を振出形式に連結して構成される。最も竿元側に位置する竿体が太径の元竿１である。図１及び図２に示すように、元竿１の竿元側端部には尻栓１０が脱着自在に装着される。
【００１４】
元竿１は炭素繊維またはガラス繊維等に合成樹脂を含浸させたプリプレグから形成される先細り筒状部材である。そして、穂先側に位置する他の竿体（例えば、元上竿２や中竿など）は、穂先側に位置する竿体から順次竿元側に位置する竿体の内部に挿入され出し入れ自在になっており、最終的には元竿１の内部に収納されコンパクトな状態となる。元竿１の周面には、必要に応じて、リールシートや釣糸ガイドなど部品も装着される。
【００１５】
元竿１は、全体として先細りテーパが施されている。穂先側端部内周面には、元上竿２の穂先側への抜け止め及び元上竿２を連結するための嵌合部分も形成される。図２に詳しく示すように、この元竿１は、本体部１ａと本体部１ａの竿元側端部に於いて他の部分より内径が大径化してその内周面にねじ溝が形成されている雌ねじ部１ｂとに区分できる。このような雌ねじ部１ｂは、例えば、芯材に繊維強化樹脂を巻回して焼成して先細り筒状部材を形成した後に、その一端側内周面を削って、内径を大径化し、且つ、その内周面にねじ溝を削る等の手法で形成できる。なお、元上竿２は、元竿１の穂先側に連結される竿体であり、元竿１と同様に全体として先細りテーパが施されている。後述のように、この元上竿２の竿元側端部は、元上竿２を元竿１内に収納した際に尻栓１０に嵌着し得る。
【００１６】
元竿１の竿元側端部の上述の雌ねじ部１ｂに尻栓１０が装着されている。図１及び図２に示すように、この尻栓１０は、穂先側に向かって開口する筒状の筒部１１と筒部１１の竿元側に連続する頭部１２とを有している。
筒部１１は第１筒状部１３と第２筒状部１４との２つの部分からなる。第１筒状部１３が外周側に位置し、第２筒状部１４が第１筒状部１３の内部に収納された状態にある。第２筒状部１４の軸方向長さは第１筒状部１３の軸方向長さより短く、第２筒状部１４は第１筒状部１３内に完全に収納されている。
【００１７】
第１筒状部１３の外周面は軸方向において２つの部分に区分できる。即ち、第１筒状部１３は穂先側の当接部分１３ａと、竿元側の雄ねじ部分１３ｂとに区分できる。当接部分１３ａはその外径が元竿１の本体部１ａの竿元側の径にあわせて調整されており、本体部１ａの内周面に当接可能である。当接部分１３ａの穂先側の端面は内周面側・外周面側共にテーパ面となっている。さらに、この当接部分１３ａには、穂先側の端縁から軸方向に延びる割りが形成されている。割りは、周方向に間隔を隔てて複数形成される。例えば、図１に示すように、周方向にそれぞれ１２０ずつ変位しながら３つの割りを形成する。
【００１８】
一方、雄ねじ部分１３ｂは当接部分１３ａより外径が大きく設定され、元竿１の雌ねじ部１ｂの径にあわせて調整されている。雄ねじ部分１３ｂにはこの雌ねじ部１ｂに螺着するためのねじ溝が形成されている。この雄ねじ部分１３ｂの軸方向長さは、一般に、雌ねじ部１ｂの軸方向長さより短く設定される。
図２に示すように、第２筒状部１４はその外径を元上竿２の竿元側端部の内径にあわせて調整されており、元上竿２の内周面が第２筒状部１４の外周面に嵌着可能となっている。即ち、元上竿２は第２筒状部１４と第１筒状部１３との間のクリアランスに収納される。なお、第２筒状部１４の外周面には周方向に係止用の突起を形成してもよい。また、第２筒状部１４の穂先側の開口には、ゴム栓１６が装着されている。
【００１９】
頭部１２は、尻栓１０を元竿１に装着した際に、元竿１の竿元側に露出する部分である。その外径は元竿１の外径にあわせて調整されている。頭部１２と筒部１１の雄ねじ部分１１ｂとの間にはワッシャーリング１５を介在させてもよい。
この釣竿では、釣りをおこなう際には、各竿体を順次元竿１から穂先側に引き出して連結して一本の釣竿として使用される。一方、他の竿体〜元上竿２を元竿１内に収納すれば、コンパクトな状態となる。さらに、元上竿２と元竿１とに於いては、元上竿２を元竿１内に収納した際に、尻栓１０の筒部１１の第２筒状部１４の外周面に元上竿２の竿元側端部が嵌着して固定される。このようにして、元上竿２は元竿１内に収納した状態でも元竿１に連結固定され、その余の竿体を穂先側に引き出して、釣竿全体の長さを調整して釣りをおこなうこともできる。
【００２０】
この釣竿に於いては、尻栓１０の雄ねじ部分１３ｂを元竿１雌ねじ部１ｂに螺着させて、尻栓１０を脱着自在に元竿１に装着している。そして、尻栓１０の筒部１１を元竿１の竿元側に挿入し、雌ねじ部１ｂに第１筒状部１３の雄ねじ部１３ｂを螺着させて、雄ねじ部分１３ｂを雌ねじ部１ｂに完全に締め込むと、図２に示すように、第１筒状部１３の穂先側の当接部分１３ａが元竿１の本体部１ａの内周面に当接する。この当接部分１３ａと本体部１ａとの摩擦力で、尻栓１０のねじの緩みが抑えられている。よって、元上竿２を尻栓１０に嵌着させ若しくはその嵌着を解除するために、元上竿２を周方向にねじる等しても、尻栓１０は元上竿２と共に周方向に回転し難く、不当に尻栓１０が緩んでしまうこともない。また、釣りの最中に、元竿１の竿元側端部の尻栓１０を腹部に押しあてながら釣人が釣りをおこなっても、尻栓１０は不当に緩み難い。
［第２実施形態］
本発明の第２実施形態を採用する釣竿は、図３に示すように、元竿２１と、その穂先側に振出形式に連結される元上竿２２と、元上竿２２の穂先側に振出形式で連結される中竿２３と、その穂先側にさらに必要に応じて連結されるその余の竿体とからなる。この元竿２１も、上記第１実施形態と同様に、本体部２１ａ及び雌ねじ部２１ｂとに区分できる。
【００２１】
この元竿２１の竿元側端部の上述の雌ねじ部２１ｂに尻栓３０が装着されている。この尻栓３０は、穂先側に向かって開口する筒状の筒部と筒部の竿元側に連続する頭部３２とを有している。上記第１実施形態と同様に、筒部は第１筒状部３３と第２筒状部３４との２つの部分からなる。第１筒状部３３が外周側に位置し、第２筒状部３４が第１筒状部３３の内部に収納された状態にある。もっとも、この尻栓３０においては、第１筒状部３３と第２筒状部３４とは別体から構成されている。即ち、第２筒状部３４の竿元側において、第２筒状部３４は頭部３２にねじ式で連結されている。両者は脱着自在としてもよいが、接着剤等で両者を固定してしまってもよい。
【００２２】
この第１筒状部３３の外周面は軸方向において２つの部分に区分できる。即ち、第１実施形態と同様に、第１筒状部３３は穂先側の当接部分３３ａと、竿元側の雄ねじ部分３３ｂとに区分できる。その余の構造も第１実施形態と同様である。
一方、第２筒状部３４の外周面も、軸方向において２つの部分に区分できる。即ち、この外周面は、軸方向においてその穂先側を小径部分として竿元側を大径部分とする２段構造となっている。穂先側の小径部分は、その外径を中竿２３の竿元側端部の内径にあわせて調整されており、中竿３の竿元側の内取面が第２筒状部３４の穂先側の外周面（小径部分）に嵌着可能となっている。また、竿元側の大径部分は、その外径を元上竿２２の竿元側端部の内径にあわせて調整されており、元上竿２２の内周面が第２筒状部３４の竿元側の外周面（大径部分）に嵌着可能となっている。また、第２筒状部３４の穂先側の開口には、ゴム栓３６が装着されている。
【００２３】
頭部３２は、尻栓３０を元竿２１に装着した際に、元竿１の竿元側に露出する部分であって、上記第１実施形態と同様である。
この釣竿では、第１実施形態と異なり、さらに中竿２３も尻栓３０の第２筒状部３４の外周面の穂先側の小径部分に嵌着させることができる。中竿２３及び元上竿２２の両者を尻栓３０に嵌着させることで、釣竿全体の長さを３段にわたって変化させることが可能となる。この場合において、元上竿２２及び／又は中竿２３の尻栓３０へ嵌着し若しくはその嵌着を解除するに当たって、元上竿２２及び／又は中竿２３を周方向にねじる等しても、尻栓３０の第１筒状部３３の当接部分３３ａが尻栓３０の不当な周方向への回転を妨げ、尻栓３０の不当な緩みが防止される。
［他の実施形態］
上述の第１実施形態において、図４に示すように、当接部分１３ａに周方向の凹部を形成し、この凹部にゴムリング５０を装着してもよい。このゴムリング５０は当接部分１３ａの周面の外径より大きな外径を有し、ゴムリング５０の周面を本体部１ａに当接させる。このように、ゴムリング５０の弾性を利用して嵌合力を演出することもできる。
【００２４】
【発明の効果】
本発明に係る釣竿は、釣竿全体の長さを調整可能であると共に、尻栓も緩みにくい。
【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の元竿１及び尻栓１０を示した図。
【図２】図１の元竿１の竿元側付近の拡大断面図。
【図３】本発明の第２実施形態を採用した釣竿の元竿２１の竿元側付近を示した図。
【図４】他の実施形態を採用した元竿１の竿元側付近の断面図。
【符号の説明】
１，２１元竿
２，２２元上竿
２３中竿
１０，３０尻栓[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a fishing rod formed by connecting a rod body in a swinging-out manner, and more particularly to a fishing rod capable of adjusting the entire length of the fishing rod.
[0002]
[Prior art]
Generally, a fishing rod is a single fishing rod formed by connecting a plurality of cylindrical rods. As a method of connecting a plurality of such rods, there is a method called a swing-out type. The swing-out type is such that a plurality of cylindrical rods can be inserted into the rod on the rod base side sequentially from the rod on the tip side. When fishing, each rod body is sequentially pulled out to the tip side, fitted and fixed, and used as one rod body. On the other hand, at the time of storage, the rod body on the tip side is sequentially stored in the rod body on the rod base side to make it compact.
[0003]
Further, among such conventional fishing rods of the swing type, there is a fishing rod capable of changing the length of the entire fishing rod to perform fishing. For example, in the former rod of such a fishing rod and the former upper pole connected to the tip side of the fishing rod, the lower end of the former rod is attached to the lower end of the former rod. I can do it. That is, in a certain type of fishing rod, when the former rod is stored in the former rod, the rod-side end of the former rod 2 is fitted to the tail plug. Then, a state in which the former rod connected to the tip side of the former rod is pulled out to the tip side (hereinafter referred to as “stretched state”) and a state in which the former upper rod is inserted into the former rod (hereinafter referred to as “storage state”) ), The former rod and the former rod can be fitted and fixed to each other, and fishing can be performed by changing the length of the entire rod according to the situation (for example, see Patent Document 1). ).
[0004]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2000-354437
[Problems to be solved by the invention]
One of the problems that arises in the fishing rod of the type in which the upper rod is fitted to the lower plug is that when the lower rod is attached to and detached from the lower rod when the lower rod is stored in the lower rod, Sometimes the screw on the original rod is loosened. That is, when attaching or detaching the former rod to or from the tail plug, the former rod is often attached to or detached from the tail plug while being twisted in the circumferential direction. Such a twist of the upper rod in the circumferential direction may loosen the screwing of the buttocks on the former rod. This looseness of the butt plug can cause the butt plug to fall off or be lost from the former rod.
[0006]
In addition, the fishing rod is not limited to the fishing rod for adjusting the length of the whole fishing rod as described above.In general, the tail plug of the fishing rod may be operated by the angler applying the rod end side end of the fishing rod to the abdomen. In some cases, it may become loose while fishing.
An object of the present invention is to provide a fishing rod that can adjust the length of the entire fishing rod and that is unlikely to loosen the buttocks.
[0007]
[Means for Solving the Problems]
The fishing rod of the present invention has a cylindrical main body portion and a female screw portion having an inner diameter larger than other portions at the rod end side end portion of the main body portion and a thread groove formed on an inner peripheral surface thereof. A first rod body and a tail plug detachably attached to the female screw portion of the first rod body are provided. The butt plug is a cylindrical portion that opens toward the tip side, and the tip side outer peripheral surface is a contact portion that can contact the inner peripheral surface of the main body of the first rod body. It has a cylindrical portion whose outer peripheral surface is a male screw portion screwed to the female screw portion, and a head continuous to the rod base side of the cylindrical portion. A plurality of splits extending in the direction are formed at intervals in the circumferential direction.
[0008]
In this fishing rod, a male thread portion of the tail plug is screwed into a female thread portion of the first rod body, and the tail plug is detachably attached to the first rod body. When the cylindrical portion of the buttocks is inserted into the base of the first rod body, the male screw portion is screwed into the female screw portion, and the male screw portion is completely screwed into the female screw portion. It comes into contact with the inner peripheral surface of the main body of the rod. By the frictional force between the contact portion and the main body, the loosening of the screw of the buttocks is suppressed. Even when the angler pushes the rod-side end of the first rod body against the abdomen while fishing, the fisherman does not unduly loose the buttocks.
[0009]
Further, another fishing rod according to the present invention further includes a second rod body connected in a swinging manner on the tip side of the first rod body. The tubular portion has a first tubular portion that opens toward the tip and a second tubular portion that is located inside the first tubular portion and opens toward the tip. The contact portion and the external thread portion are formed on the outer peripheral surface of the first cylindrical portion, and the inner peripheral surface of the rod-side end portion of the second rod body can be freely fitted on the outer peripheral surface of the second cylindrical portion. .
[0010]
In this fishing rod, if necessary, another rod body is connected to the tip side of the second rod body in a swing-out manner. Then, when each rod body is sequentially pulled out from the first rod body to the tip side, it is fitted and fixed sequentially in the same manner as a conventional swing-out type fishing rod, and can be used as one fishing rod. On the other hand, if the other rod body and the second rod body are housed in the first rod body, the state becomes compact. Furthermore, in the second rod body and the first rod body, when the second rod body is housed in the first rod body, the outer peripheral surface of the second cylindrical part of the butt-plug cylindrical part ( That is, the rod-side end of the second rod body is fitted and fixed (between the first cylindrical part and the second cylindrical part). In this way, the second rod body is connected and fixed to the first rod body even when housed in the first rod body, and the remaining rod body is pulled out to the tip side to adjust the entire length of the fishing rod to perform fishing. Can be performed.
[0011]
In this case, even when the second rod body is twisted in the circumferential direction when the second rod body is fitted to or released from the butt plug of the second rod body, the contact portion of the first tubular portion of the butt plug may be used. Prevents the tail stopper from rotating in the circumferential direction, thereby preventing the tail plug from being loosened.
Further, another fishing rod of the present invention further includes a third rod connected to the tip side of the second rod in a swinging manner. The outer peripheral surface of the second cylindrical portion of the tubular portion has a two-stage structure of a small-diameter portion on the tip side and a large-diameter portion on the rod side. The surface is freely fittable, and the inner peripheral surface of the rod end side end of the second rod body is freely fittable on the large diameter portion on the rod base side.
[0012]
In this fishing rod, the third rod body can be further fitted on the tip side of the outer peripheral surface of the second cylindrical portion of the buttocks. By fitting both the second rod body and the third rod body to the buttocks, the entire length of the fishing rod can be changed over three steps. In this case, when the second rod body and / or the third rod body is fitted to or released from the buttocks of the second rod body and / or the third rod body, the second rod body and / or the third rod body is twisted in a circumferential direction or the like. Also, the abutting portion of the first tubular portion of the buttocks prevents unjust rotation of the buttocks in the circumferential direction, thereby preventing unjust loosening of the buttocks.
[0013]
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 configured by connecting a plurality of rod bodies in a swing-out form. The rod body located closest to the rod base is the large diameter rod 1. As shown in FIG. 1 and FIG. 2, a tail plug 10 is detachably attached to a rod base end of the former rod 1.
[0014]
The main rod 1 is a tapered cylindrical member formed from a prepreg obtained by impregnating a synthetic resin into carbon fiber, glass fiber, or the like. The other rods located on the tip side (for example, the former upper rod 2 and the middle rod) are inserted into the rod located on the tip side sequentially from the rod located on the tip side so that they can be freely inserted and removed. Finally, it is housed inside the original pole 1 and becomes compact. Parts such as a reel sheet and a fishing line guide are mounted on the peripheral surface of the original rod 1 as necessary.
[0015]
The main rod 1 is tapered as a whole. On the inner peripheral surface of the tip side end portion, a fitting portion for preventing the upper pole 2 from falling off to the tip side and connecting the former pole 2 is also formed. As shown in detail in FIG. 2, the original rod 1 has a main body 1a and an inner diameter larger than other parts at the rod end side of the main body 1a, and a thread groove is formed on an inner peripheral surface thereof. Female thread portion 1b. Such a female screw portion 1b is formed, for example, by winding a fiber reinforced resin around a core material and firing it to form a tapered cylindrical member, and then shaving one end side inner peripheral surface to increase the inner diameter, and It can be formed by a method such as cutting a thread groove on the inner peripheral surface. In addition, the former upper rod 2 is a rod body connected to the tip side of the former rod 1, and is tapered as a whole like the former rod 1. As will be described later, the rod base end of the former upper rod 2 can be fitted to the tail plug 10 when the former upper rod 2 is stored in the former rod 1.
[0016]
A tail plug 10 is attached to the above-described female screw portion 1b at the rod base end of the main rod 1. As shown in FIGS. 1 and 2, the butt plug 10 has a cylindrical tube portion 11 that opens toward the tip of the ear and a head portion 12 that is continuous with the rod side of the tube portion 11.
The cylindrical part 11 is composed of two parts, a first cylindrical part 13 and a second cylindrical part 14. The first tubular portion 13 is located on the outer peripheral side, and the second tubular portion 14 is housed inside the first tubular portion 13. The axial length of the second tubular portion 14 is shorter than the axial length of the first tubular portion 13, and the second tubular portion 14 is completely housed in the first tubular portion 13.
[0017]
The outer peripheral surface of the first cylindrical portion 13 can be divided into two parts in the axial direction. That is, the first cylindrical portion 13 can be divided into a contact portion 13a on the tip side and a male screw portion 13b on the rod base. The outer diameter of the contact portion 13a is adjusted according to the diameter of the main body 1a of the main rod 1 on the rod base side, and can abut on the inner peripheral surface of the main body 1a. The end face on the tip side of the contact portion 13a is tapered on both the inner peripheral surface side and the outer peripheral surface side. Further, a split extending in the axial direction from the edge on the tip side is formed in the contact portion 13a. A plurality of splits are formed at intervals in the circumferential direction. For example, as shown in FIG. 1, three splits are formed while being displaced by 120 in the circumferential direction.
[0018]
On the other hand, the outer diameter of the male screw portion 13b is set larger than that of the contact portion 13a, and is adjusted according to the diameter of the female screw portion 1b of the original rod 1. The male screw portion 13b has a screw groove for screwing to the female screw portion 1b. Generally, the axial length of the male screw portion 13b is set shorter than the axial length of the female screw portion 1b.
As shown in FIG. 2, the outer diameter of the second cylindrical portion 14 is adjusted according to the inner diameter of the rod base end of the former rod 2, and the inner peripheral surface of the former rod 2 is the second cylindrical part. It can be fitted to the outer peripheral surface of the shape part 14. That is, the former upper rod 2 is accommodated in the clearance between the second tubular portion 14 and the first tubular portion 13. Note that a projection for locking may be formed on the outer peripheral surface of the second cylindrical portion 14 in the circumferential direction. In addition, a rubber stopper 16 is attached to an opening on the tip side of the second cylindrical portion 14.
[0019]
The head 12 is a portion that is exposed to the base side of the original rod 1 when the tail plug 10 is attached to the original rod 1. The outer diameter is adjusted according to the outer diameter of the original rod 1. A washer ring 15 may be interposed between the head portion 12 and the male screw portion 11b of the cylindrical portion 11.
In this fishing rod, when fishing, each rod body is pulled out from the forward dimension rod 1 to the tip side and connected to be used as one fishing rod. On the other hand, if the other rod body to the former upper rod 2 are stored in the former rod 1, a compact state is obtained. Further, in the former upper rod 2 and the former rod 1, when the former upper rod 2 is housed in the former rod 1, the outer peripheral surface of the second tubular portion 14 of the tubular portion 11 of the buttocks plug 10 is removed. The rod base end of the upper rod 2 is fitted and fixed. In this way, the former upper rod 2 is fixedly connected to the former rod 1 even in the state of being stored in the former rod 1, and the remaining rod body is pulled out to the tip side to adjust the length of the entire fishing rod for fishing. You can do that too.
[0020]
In this fishing rod, the male thread portion 13b of the tail plug 10 is screwed to the female thread portion 1b of the original rod 1, and the tail plug 10 is detachably attached to the original rod 1. Then, the tubular portion 11 of the buttocks plug 10 is inserted into the base side of the original rod 1, and the male screw portion 13b of the first cylindrical portion 13 is screwed to the female screw portion 1b, so that the male screw portion 13b is completely inserted into the female screw portion 1b. As shown in FIG. 2, the contact portion 13 a on the tip side of the first cylindrical portion 13 contacts the inner peripheral surface of the main body 1 a of the original rod 1. The looseness of the screw of the buttocks plug 10 is suppressed by the frictional force between the contact portion 13a and the main body 1a. Therefore, even if the former rod 2 is twisted in the circumferential direction in order to fit the former rod 2 to the butt plug 10 or to release the fitting, the butt plug 10 is circumferentially moved together with the former rod 2. It is difficult to rotate, and the butt plug 10 does not loosen unduly. Also, during fishing, even if the angler pushes the buttocks 10 at the rod end side of the former rod 1 against the abdomen, the fisherman does not unduly loosen the buttocks 10 when fishing.
[Second embodiment]
As shown in FIG. 3, a fishing rod adopting the second embodiment of the present invention includes a base rod 21, a base rod 22 connected to the tip side of the base rod in a swinging manner, and a swinging side of the base rod 22. It consists of a middle pole 23 connected in the form and a remaining pole body further connected to the tip side as needed. The original rod 21 can also be divided into a main body 21a and a female screw 21b, as in the first embodiment.
[0021]
A tail plug 30 is attached to the above-mentioned female screw portion 21b at the rod base end of the rod 21. The butt plug 30 has a cylindrical tube portion that opens toward the tip of the ear and a head portion 32 that is continuous with the rod side of the tube portion. As in the first embodiment, the tubular portion is composed of two portions, a first tubular portion 33 and a second tubular portion 34. The first tubular portion 33 is located on the outer peripheral side, and the second tubular portion 34 is housed inside the first tubular portion 33. However, in the buttocks 30, the first tubular portion 33 and the second tubular portion 34 are formed separately. That is, on the rod base side of the second tubular portion 34, the second tubular portion 34 is connected to the head 32 by a screw type. Although both may be detachable, both may be fixed with an adhesive or the like.
[0022]
The outer peripheral surface of the first cylindrical portion 33 can be divided into two parts in the axial direction. That is, similarly to the first embodiment, the first cylindrical portion 33 can be divided into a contact portion 33a on the tip side and a male screw portion 33b on the rod base side. The remaining structure is the same as that of the first embodiment.
On the other hand, the outer peripheral surface of the second cylindrical portion 34 can also be divided into two portions in the axial direction. That is, the outer peripheral surface has a two-stage structure in which the tip side is a small diameter portion in the axial direction and the pole side is a large diameter portion in the axial direction. The outer diameter of the small-diameter portion on the tip side is adjusted according to the inner diameter of the rod-side end portion of the middle rod 23, and the internal surface of the middle rod 3 on the rod side is the tip of the second cylindrical portion 34. The outer peripheral surface (small diameter portion) on the side can be fitted. Further, the outer diameter of the large-diameter portion on the rod base side is adjusted according to the inner diameter of the rod-side end of the former rod 22, and the inner peripheral surface of the former rod 22 is formed into the second cylindrical portion 34. Can be fitted to the outer peripheral surface (large-diameter portion) on the rod base side. In addition, a rubber stopper 36 is attached to an opening on the tip side of the second cylindrical portion 34.
[0023]
The head 32 is a portion that is exposed to the rod base side of the former rod 1 when the tail plug 30 is mounted on the former rod 21, and is the same as in the first embodiment.
In this fishing rod, unlike the first embodiment, the middle rod 23 can be further fitted to the small diameter portion on the tip side of the outer peripheral surface of the second tubular portion 34 of the tail plug 30. By fitting both the middle rod 23 and the former upper rod 22 to the buttocks 30, it becomes possible to change the length of the entire fishing rod over three steps. In this case, in fitting or releasing the fitting of the former upper rod 22 and / or the middle rod 23 to the butt plug 30, even if the former upper rod 22 and / or the middle rod 23 is twisted in the circumferential direction, or the like. The abutment portion 33a of the first tubular portion 33 of the buttocks 30 prevents the buttocks 30 from rotating in the circumferential direction, thereby preventing the buttocks 30 from being loosened.
[Other embodiments]
In the above-described first embodiment, as shown in FIG. 4, a circumferential recess may be formed in the contact portion 13a, and the rubber ring 50 may be mounted in the recess. The rubber ring 50 has an outer diameter larger than the outer diameter of the peripheral surface of the contact portion 13a, and causes the peripheral surface of the rubber ring 50 to contact the main body 1a. In this manner, a fitting force can be produced by utilizing the elasticity of the rubber ring 50.
[0024]
【The invention's effect】
ADVANTAGE OF THE INVENTION The fishing rod which concerns on this invention can adjust the length of the whole fishing rod, and a butt-plug is also hard to loosen.
[Brief description of the drawings]
FIG. 1 is a view showing a base rod 1 and a tail plug 10 of a fishing rod employing a first embodiment of the present invention.
FIG. 2 is an enlarged cross-sectional view of the vicinity of the base side of the base rod 1 of FIG.
FIG. 3 is a view showing the vicinity of the base side of a former rod 21 of a fishing rod employing a second embodiment of the present invention.
FIG. 4 is a cross-sectional view of the vicinity of a rod base side of a former rod 1 employing another embodiment.
[Explanation of symbols]
1,21 Former rod 2,22 Former upper rod 23 Naka rod 10,30 Butt plug

Claims

A first rod body having a cylindrical main body part and a female screw part having an inner diameter larger than that of the other part at the rod end side end part of the main body part and a thread groove formed in an inner peripheral surface thereof; ,
A butt plug detachably attached to the female screw portion of the first rod body,
The butt plug is a cylindrical portion that opens toward the tip side, and the tip side outer peripheral surface is a contact portion that can contact the inner peripheral surface of the main body of the first rod body. A cylindrical portion having an external peripheral surface serving as a male screw portion screwed to the female screw portion, and a head continuous to the rod base side of the cylindrical portion; A fishing rod, wherein a plurality of splits extending in an axial direction from a part are formed at intervals in a circumferential direction.

A second rod connected to the tip of the first rod in a swinging manner;
The tubular portion has a first tubular portion that opens toward the tip side, and a second tubular portion that is located inside the first tubular portion and opens toward the tip side,
The contact portion and the male screw portion are formed on an outer peripheral surface of the first cylindrical portion, and an inner peripheral surface of a rod base end portion of the second rod body is fitted on an outer peripheral surface of the second cylindrical portion. The fishing rod according to claim 1, which is free.

A third rod connected to the tip of the second rod in a swinging manner;
The outer peripheral surface of the second tubular portion of the tubular portion has a two-stage structure of a small-diameter portion on the tip side and a large-diameter portion on the tip side, and the small-diameter portion on the tip side is near the tip of the third rod body. The fishing rod according to claim 2, wherein an inner peripheral surface of an end portion is freely fittable, and an inner peripheral surface of a rod end side of the second rod body is freely fittable to a large diameter portion on the rod base side.