1292696 (1) 玖、發明說明 【發明所屬之技術領域】 本發明是關於使用在釣魚方面的釣竿。詳細來說，是 具有可自由出入主竿的竿根側地連結的延伸竿，可容易地 調整釣竿全體的長度的釣竿。 【先前技術】 一般的釣竿，是以抽出形式或接續形式來將複數的竿 體連結成一支釣竿。來提供配合其用途具備有各種機能的 各種形式的釣竿。例如，釣香魚用的香魚竿或溪流竿等的 延伸竿，爲了要容易取得釣到的魚，需要具有能在釣魚操 作時儘快變更釣竿的長度的機能。 例如，某種以往的香魚竿，是將其他的延伸竿連結在 主竿的竿根側端部。這種延伸竿，不管是在收容於主竿內 的狀態（收容狀態）、從主竿內抽出到手邊的狀態（延伸 狀態），都可連結固定於主竿。而且，可因應釣魚操作中 的狀況，將延伸竿伸縮來調整釣竿全體的長度來進行釣魚 (例如參照日本專利文獻1)。具體來說，以往的可調整 釣竿長度的釣竿，在收容狀態，是在主竿的竿根側端部的 內周面與延伸竿的竿根側的周面相互嵌裝的構造。 【專利文獻1】 日本實用新案第3022411號公報（第2圖、第3圖） (2) 1292696 【發明內容】 〔發明欲解決的課題〕 如上述的延伸竿可出入於主竿的竿根側的形式的釣 竿’在釣到魚時可將延伸竿從主竿延伸來加長釣竿全體的 長度，則即使是連結較釣竿更長的釣線也能容易取魚。可 是，在釣魚時，釣竿所需要的機能不止這些，即使在釣到 魚之前的狀態，也需要對應於釣場的狀況來改變釣竿全體 的長度。 本發明的課題，就是要提供一種釣竿，可以在主竿與 延伸竿之間使釣竿全體的長度變化而容易取魚，且即使在 取魚之前的釣魚操作階段也可使釣竿全體的長度變化，因 應狀況來釣魚。 〔用以解決課題的手段〕 第1發明的釣竿，是依序連結筒狀體的複數竿體而成 的釣竿，是具備有：主竿、以及可自由出入於主竿內地連 結在主竿的竿根側的延伸竿、以及可收容於主竿內及延伸 竿內地連結在主竿的前側的主上竿。延伸竿及主上竿不管 是收容於主竿內的收容狀態、或是抽出於主竿的竿根側或 前側的延伸狀態，都可固定於主竿。 主竿，全體是實施了前端較細的錐桿處理的筒狀體， 前側端部內徑是較其他部分更小直徑化作成第一嵌合母 部，具有裝卸自如地連結於竿根側端部的尾栓部。該尾栓 部，具有：插入於主竿的竿根側端部內而內周面成爲第二 -5- (3) 1292696 嵌合母部的插入部、以及設置於竿根側端部周緣的第一鉤 扣部。 延伸竿，是具有：形成有在前側端部外周面形成爲較 其他部分更大直徑的第一嵌合公部且可出入於主竿內的筒 狀體的插入部、連結於插入部的竿根側的把手部、以及設 置在把手部的前側端部周緣與上述第一鉤扣部卡合的第二 鉤扣部。 主上竿，全體是實施了前端較細的錐桿處理的筒狀 體，形成有在軸方向中央附近至前側的外周面形成爲較其 他部分更大直徑的第二嵌合公部，且竿根側端部外周面也 成爲第三嵌合公部，具有可自由裝卸地安裝成封閉竿根側 端部的底栓部。 該延伸竿的第一嵌合公部，是可自由嵌裝在主竿的尾 栓部的第二嵌合母部，主上竿的第二嵌合公部及第三嵌合 公部，是可自由嵌裝於主竿的第一嵌合母部。 該釣竿的延伸竿，不管是收容於主竿內的狀態（收容 狀態）、或是從主竿內抽出至手邊的狀態（延伸狀態）， 都可連結固定於主竿。在進行釣魚期間，可將延伸竿從主 竿抽出至手邊成爲延伸狀態，或者可將延伸竿壓入至主竿 內成爲收容狀態，在釣到魚之後要取下魚時可調整長度。 具體來說，在各狀況，主竿與延伸竿是以以下的方式連結 固定。 首先’在收容狀態，從竿根側將延伸竿插入到主竿 內，插入部的竿根側的把手部會到達主竿的尾栓部。尾栓 -6 - (4) 1292696 部的第一夠扣部會卡合於第二飽扣部，主竿與延伸竿會相 互連結固定。另一方面，在延伸狀態，從主竿內將延伸竿 抽出至竿根側的話，插入部的第一嵌合公部會嵌裝到尾栓 部的第二嵌合母部，主竿與延伸竿會相互連結固定。 該釣竿的主上竿，不管是收容於主竿內的狀態（收容 狀態）、或是從主竿內抽出至前側的狀態（延伸狀態）， 都可連結固定於主竿。在進行釣魚期間，可將主上竿從主 竿抽出至前側成爲延伸狀態，或者可將主上竿壓入至主竿 內成爲收容狀態，可配合釣場的狀況來調整釣竿全體的長 度來進行釣魚操作。具體來說，在各狀況，主竿與主上竿 是以以下的方式連結固定。 首先’在收容狀態，主上竿是被插入到主竿內（根據 延伸竿的狀況而在延伸竿的插入部內），第二嵌合公部是 嵌裝到主竿的前側的第一嵌合母部，主竿與主上竿會相互 連結固定。另一方面，在延伸狀態，會從主竿內將主上竿 朝前側抽出，第三嵌合公部會嵌裝到主竿的前側的第一嵌 合母部’主竿與主上竿會相互連結固定。 第2發明的釣竿，是針對第1發明的釣竿，主上竿， 具有可自由裝卸地安裝在其外周面的第二嵌合公部的前側 端緣的環部構件。 在將主上竿插入到主竿內的收容狀態，如果在超過第 二嵌合公部過度將主上竿壓入到主竿內的情況，環部構件 會抵接於主竿的前側端面，能防止主上竿進入到主竿內。 在將延伸竿抽出至主竿的竿根側的延伸竿的延伸狀態，能 1292696 (5) 避免主上竿深入到主竿內的情形。 第3發明的釣竿，是針對第1或2發明的釣竿，主上 竿的底栓部，具有可朝外方向自由出沒地突出於外周面的 滑動構件。 安裝於主上竿的竿根側的底栓部，會封閉住主上竿的 竿根側，能防止收容於主上竿內連結於主上竿的前側的其 他竿體超過主上竿到達竿根側的情形。該底栓部的外周面 的滑動構件，在主竿或延伸竿內會抵接於延伸竿的內周 面，達到防止晃動的機能。 第4發明的釣竿，是針對第3發明的釣竿，在延伸竿 的插入部的前側端部安裝著將主上竿從前側導引到插入部 內的導引構件。 在將延伸竿插入到主竿內的收容狀態，當調整成將主 上竿插入到主竿內的收容狀態時，導引構件會順暢地將主 上竿導引至延伸竿的內部。 【實施方式】 〔第一實施方式〕 以下針對本發明的第一實施方式參照圖面來加以說 明。 採用本發明的第一實施方式的釣竿，是使用於釣香魚 方面的釣竿，如第1圖所示，是具有：主竿1、可從主竿 1的竿根側自由出入地連結的延伸竿2、以及從主竿1的 前側可自由出入地連結著的主上竿3。而主上竿3的前 -8- 1292696 (6) 側’連結著複數竿體（中竿、前頭細竿等）（沒有圖 示）°迨些竿體是將使合成樹脂浸漬在碳纖維等的強化纖 維的預浸漬材料加以焙燒所形成的。 主竿1的更前側的各竿體，是以所謂的抽出形式所連 結的’可從前側竿體依序自由出入於位於竿根側的竿體 內。可分別將位於前側的竿體的竿根側端部外周面嵌裝於 鄰接於竿根側的竿體的前側內周面而相互固定。在位於最 前側的前頭細竿的前側端部是配置有釣線卡止具。而主竿 1與位於其竿根側的延伸竿2，及主竿1與位於前側的主 上竿3，如後述，不管是在延伸狀態、收容狀態，都可相 互連結固定。 (針對主竿1 ) 主竿1全體是實施了越向前側越小直徑化的錐桿處理 的筒狀體。在前側端部是以較其他部分更大斜度的錐桿讓 前側小直徑化（內徑是較其他部分更小直徑化），前側端 部的內周面在一定的軸方向範圍是直徑沒有變化的面。該 斜度較大的錐桿面至軸方向直徑沒有變化的面部則是第一 嵌合母部（參照第2圖、第6圖）。如後述詳細的說明， 該第一嵌合母部la會嵌裝於主上竿3。 如第3圖所示’在該主竿1的竿根側端部是裝卸自如 地安裝著尾環部4與尾栓部5(參照第4圖及第5圖）。 尾環部4，是金屬（鋁合金）製的圓筒型的構件，在 千根側频部內周面是成爲形成螺紋溝槽的第一母螺紋部 -9- 1292696 C7) 分°主竿1的竿根側端部的外周面，是從竿根側端 掉一部分凹入，尾環部4的前側是安裝在該凹入部 該尾環部4覆蓋該凹入部分。此時，尾環部4的外 定成合乎主竿1的外徑。 尾栓部5是硬質合成樹脂製的圓筒型的構件。 成爲一段小直徑化的插入部分，竿根側端部是成爲 直徑化的頭部分其外徑是合乎上述尾環部4的外徑 部分是從主竿1的竿根側插入到其內部的部分。插 的內周面是成爲越向竿根側越小直徑化的所謂的 面。這裡是第二嵌合母部5a。該尾栓部5的第二 部5 a，在延伸狀態是與後述的延伸竿2的前側端 著（參照第4圖）。在該插入部分的竿根側的外周 爲形成螺紋溝槽而螺裝於上述尾環部4的第一母螺 的第一公螺紋部分。在尾栓部5的竿根側端部內周 部分的內周），是涵蓋軸周方向全體形成了凹入的 槽5b。 該尾栓部5 ’是藉由將第一公螺紋部分螺裝於 4的第一母螺紋部分，來經由尾環部4可自由裝卸 在主竿1。 (針對延伸竿2 ) 如第3圖所示，延伸竿2，是由：從主竿i的 插入到其內部的插入部6、以及連結於插入部6的 的粗直徑的管狀構件的把手部7所構成。 緣部削 分，讓 徑是設 前側是 一段大 。插入 入部分 逆錐桿 嵌合母 部嵌裝 面是成 紋部分 面（頭 鉤扣溝 尾環部 地安裝 竿根側 竿根側 -10- 1292696 (8) 插入部6是可插入於主竿1內的外徑的筒狀體。插入 部6，是越向竿根側越小直徑化的構件。在收容主上竿3 時與滑動環2 5相接的插入部6的內周面是直徑沒有變化 的構造或是非常小斜度的錐桿狀。前側端部的外周面，在 軸方向一定範圍其外徑是較其他部分更大直徑化，這裡是 成爲嵌合公部6a。該嵌合公部6a的外徑，是配合上述主 竿1的尾栓部5的第二嵌合母部5 a的逆錐桿面（參照第 4圖）。 而該插入部6，是具有配置於前側端部的橡膠外殻 8。橡膠外殼8是由習知的彈性橡膠所形成而在軸方向是 中空貫穿的圓筒型的構件。竿根側的外周面是削掉一部 分，這裡被插入到插入部6的前側端部而以黏接劑加以固 定。橡膠外殻8的前側的內徑，是實施了朝向前側端部擴 大直徑的錐桿處理。由前側的端部起還朝軸方向形成了 「裂紋」。該橡膠外殼8，是在要將以抽出形式連結在主 竿1的前側的主上竿3收容於主竿1內時，用來順暢地將 主上竿3導引至插入部6內的構造。 把手部7，是較插入部6更大直徑且是配合主竿1的 外周面的直徑的管狀構件。也可以與主竿1或插入部6同 樣地由纖維強化樹脂所構成，也可以由另外的金屬材料來 構成。在插入部6從前側被插入的狀態下，以螺合安裝等 習知的方式裝卸自如的把手部7，是被連結在插入部6的 竿根側端部。把手部7，即使在將插入部6完全插入的狀 下’或是將插入部6邰分地插入到把手部7的前側端部 -11 - 1292696 (9) 的狀態都可以。而以不能裝卸的方式來連結把手部7也可 以。 在把手部7的前側端部的插入部6的周面固定著鉤扣 構件9。鉤扣構件9是由合成樹脂或輕合金等所形成。其 外徑是與把手部7及主竿1至底栓部5相同面的大小。夠 扣構件9的前側的外周面有一段小直徑化，在其小直徑化 的周面是在圓周方向全體具有朝外方向突出的卡止突起。 卡止突起可嵌合於尾栓部5的鉤扣溝槽5b (參照第5 圖）。 在該實施方式中，爲了連結固定插入部6與主竿1， 而利用了鉤扣構件9的卡止突起與尾栓部5的鉤扣溝槽 5 b，可是也可以採用以下的方式。例如，在尾栓部5的預 定的內周面形成螺紋溝槽作成母螺紋部，取代鉤扣構件9 配置公螺紋構件，將兩者螺合。在這種情況，用來進行螺 合的螺紋也可以用多頭螺紋。 (針對主上竿3 ) 主上竿3 ’是可自由出入地（所謂的抽出形式）連結 在主竿1的前側，全體實施了前端較細的錐桿處理的筒狀 體（參照第1圖（c ))。 如第2圖及第6圖所示，主上竿3，在軸方向中央附 近至前側的外周面，在軸方向一定的範圍是作得較厚而形 成了較其前後更大直徑的第二嵌合公部3 a。竿根側端部 外周面也作成第三嵌合公部3b。成爲第三嵌合公部3b的 -12- 1292696 (11) 螺紋溝槽的第二母螺紋部分。環部構件1 0的前側的內周 面有一段小直徑化，能達到抵接於上述的主上竿3的段部 的定位機能。也就是說，該環部構件1 〇是從主上竿3的 前側配置在其外周面，是藉由將第二母螺紋部分螺裝於第 二公螺紋部分而裝卸自如地被固定著。 如第7圖詳細顯示，在主上竿3的竿根側端部內周面 是成爲形成了螺紋溝槽的第三母螺紋部分。底栓部1 1是 螺合在這裡。 底栓部11，是具有：主體部21、安裝於主體部21的 前側端面的橡膠板2 2、裝卸自如地安裝於主體部21的竿 根側的圓盤部2 3、以及配置在主體部2 1的周面的彈性體 24與配置在彈性體24的周面上的滑動環部25。 主體部2 1，具有在前側外周面形成了螺紋溝槽來螺 裝於上述主上竿3的第三母螺紋部分的第三公螺紋部分。 該第三公螺紋部分的竿根側，在大直徑化成合乎主上竿3 的外徑後有一段小直徑化，形成了支承部。而在竿根側端 面的直徑方向中央具有突出於竿根側的第四公螺紋部分。 主體部2 1是由合成樹脂或金屬材料所構成。爲了輕量化 也可使內部中空化。也可形成貫穿於軸方向的空氣孔。 橡膠板22是安裝成封閉主體部2 1的前側端面的板構 件。該橡膠板22會支承插入到主上竿3內的中竿。橡膠 板22也可以黏接在主體部2 1也可以作成可交換。如上述 在主體部2 1形成貫穿於軸方向的空氣孔時，橡膠板22也 形成連通於該空氣孔的貫穿孔。 -14- 1292696 (12) 圓盤部23在圓周方向中央附近具有螺合於主體部21 的第四公螺紋部分的螺紋孔（第四母螺紋部）。外徑是對 齊於主體部2 1。是將以下詳細說明的彈性體2 4及配置在 彈性體2 4的周面上的滑動環2 5夾在與主體部2 1之間。 彈性體2 4是由彈性橡膠或海綿材料等所形成的環狀 的構件。是被安裝於主體部2 1的小直徑化的支承部。在 該彈性體24的外周上還安裝有滑動環25。滑動環25是 由合成樹脂等具有一定的彈性的材料所形成，且在環部的 一部分形成有裂紋部。是將外周面實施了凸曲面化且容易 滑動的聚四氟乙烯（核准商標）樹脂加工。是以較主體部 2 1的外徑更朝外方向突出的方式被配置在支承部。該滑 動環25，在將主上竿3插入到主竿1乃至延伸竿2的插 入部6內時，會抵接於插入部6的內周面，防止主上竿3 朝圓周方向的振動。 (針對主竿1與延伸竿2的連結固定） 該釣竿的延伸竿2，不管是收容於主竿1內的狀態 (收容狀態）、或是從主竿1內抽出至手邊的狀態（延伸 狀態），都可連結固定於主竿1。在進行釣魚的期間，可 調整成將延伸竿2從主竿1抽出至手邊的延伸狀態，或是 調整成將延伸竿2壓入至主竿1內的收容狀態，在釣到魚 後將魚取下時可調整長度。 具體來說，如第3圖所示，在收容狀態，從竿根側將 延伸竿2插入到主竿1內的話，插入部6的竿根側直到把 -15- (14) 1292696 將主上竿3朝前側抽出，第三嵌合公部3b會嵌裝 1的前側的第一嵌合母部1 a ’主竿1與主上竿3會 結固定。 〔其他實施方式〕 如第8圖所示，也可以將主上竿3的第二嵌 3 a形成於前側端部，將環部構件1 〇 —體地形成在 3。也就是說，由預浸漬材料形成主上竿3，在較 直徑化的第二嵌合公部3 a的前側也設定一段大直 分T，以該大直徑部分防止主上竿3朝向主竿1內 的插入。在這種情況，由其他構件構成主上竿3的 的第三嵌合公部3b而可從主上竿3自由裝卸。在 上竿3與主竿1分解時，從主上竿3將主上竿3的 合公部3b卸下，來將主上竿3與主竿1分解。藉 構造，也可提升外觀性。 〔發明效果〕 藉由本發明的釣竿，可以使主竿與延伸竿之間 的長度變化，而容易取魚，且即使在取魚之前的釣 階段也可使釣竿全體的長度變化，因應狀況來釣魚 【圖式簡單說明】 第1圖是關於採用本發明的第一實施方式的釣 竿1、延伸竿2、主上竿3，（a)是將延伸竿2及 至主竿 相互連 合公部 主上竿 厚且大 徑的部 的過多 竿根側 要將主 第三嵌 由這種 的釣竿 魚操作 竿的主 主上竿 -17-1292696 (1) Description of the Invention [Technical Field of the Invention] The present invention relates to the use of fishing rods for fishing. Specifically, it is an extension which is connected to the root side of the main raft, and can easily adjust the length of the entire fishing rod. [Prior Art] A general fishing rod connects a plurality of corpses into a fishing rod in an extracted form or a continuous form. To provide various types of fishing rods with various functions in accordance with their use. For example, in order to easily obtain the fish caught, it is necessary to have the function of changing the length of the fishing rod as soon as possible during the fishing operation. For example, some conventional squid squid is connected to the other end of the main scorpion. This extension 可 can be connected and fixed to the main raft regardless of the state (accommodating state) accommodated in the main raft and the state (extended state) drawn from the main raft to the hand. In addition, it is possible to perform fishing by adjusting the length of the entire fishing rod in accordance with the situation in the fishing operation (see, for example, Japanese Patent Laid-Open Publication No. Hei. Specifically, in the conventional storage state, the fishing rod having the length of the fishing rod is fitted to the inner peripheral surface of the root end side of the main jaw and the circumferential surface of the root side of the extension weir. [Patent Document 1] Japanese Utility Model No. 3022411 (Fig. 2, Fig. 3) (2) 1292696 [Disclosed] [Problems to be Solved by the Invention] As described above, the extension 竿 can be inserted into the root side of the main raft In the form of a fishing rod, when the fish is caught, the extension raft can be extended from the main raft to lengthen the length of the entire fishing rod, and even if the fishing line is longer than the fishing rod, the fish can be easily taken. However, when fishing, the functions required for the fishing rod are not limited to these, and even in the state before the fish is caught, it is necessary to change the length of the entire fishing rod in accordance with the condition of the fishing ground. An object of the present invention is to provide a fishing rod which can change the length of the entire fishing rod between the main raft and the extension raft to easily take the fish, and can change the length of the entire fishing rod even in the fishing operation stage before the fish is taken. Fishing according to the situation. [Means for Solving the Problem] The fishing rod according to the first aspect of the invention is a fishing rod in which a plurality of carcasses of the tubular body are sequentially connected, and the fishing rod is provided with a main body and a main body which is freely accessible from the main body. The extension 竿 on the root side and the main raft that can be received in the main raft and in the extension 连结 are connected to the front side of the main raft. The extension 竿 and the main 竿 can be fixed to the main raft regardless of whether it is housed in the main raft or extended from the sacral side or the anterior side of the main raft. The main body is a cylindrical body which is subjected to a tapered rod end treatment, and the inner diameter of the front end portion is smaller than the other portions to form a first fitting female portion, and is detachably coupled to the root end portion. The tail plug. The tail plug portion has an insertion portion that is inserted into the root end portion of the main jaw and an inner peripheral surface that is a second -5 - (3) 1292696 fitting female portion, and a portion that is provided on the periphery of the root side end portion a hook. The extension 竿 has an insertion portion in which a cylindrical body having a larger diameter than the other portion of the front end portion and having a larger diameter than the other portion, and a cylindrical body that can be inserted into the main body, and a shackle that is coupled to the insertion portion a handle portion on the root side and a second hook portion provided on the periphery of the front end portion of the handle portion and the first hook portion. The main upper cymbal is a cylindrical body that has been subjected to a tapered rod end treatment, and is formed with a second fitting common portion having a larger outer diameter than the other portions in the vicinity of the center in the axial direction to the front side, and the cymbal is formed. The outer peripheral surface of the root side end portion also serves as a third fitting male portion, and has a bottom plug portion that is detachably attached to close the end portion of the root side. The first fitting male portion of the extension magazine is a second fitting female portion that can be freely fitted into the tail bolt portion of the main jaw, and the second fitting male portion and the third fitting male portion of the main upper jaw are The first mating female body can be freely fitted to the main jaw. The extension of the fishing rod can be connected and fixed to the main raft regardless of whether it is accommodated in the main raft (in a state of being housed) or in a state of being pulled out from the main raft to the hand (extended state). During fishing, the extension 竿 can be pulled out from the main raft to the hand to be extended, or the extension 竿 can be pushed into the main 成为 to be in a containment state, and the length can be adjusted when the fish is removed after catching the fish. Specifically, in each case, the main 竿 and the extension 连结 are fixed in the following manner. First, in the accommodating state, the extension 竿 is inserted into the main raft from the root side, and the handle portion on the gingival side of the insertion portion reaches the tail spigot portion of the main raft. Tail bolt -6 - (4) 1292696 The first enough fastening part will be engaged with the second full fastening part, and the main 竿 and the extension 竿 will be interconnected and fixed. On the other hand, in the extended state, when the extension 竿 is pulled out from the main 竿 to the 竿 root side, the first fitting metric portion of the insertion portion is fitted to the second fitting female portion of the tail plug portion, the main cymbal and the extension竿 will be fixed to each other. The main upper jaw of the fishing rod can be connected and fixed to the main raft regardless of whether it is accommodated in the main raft (in a state of being housed) or in a state of being pulled out from the main sill to the front side (extended state). During the fishing period, the main upper jaw can be taken out from the main raft to the front side to be in an extended state, or the main upper squat can be pushed into the main raft to be in a accommodating state, and the length of the whole fishing rod can be adjusted according to the condition of the fishing ground. Fishing operation. Specifically, in each situation, the main unit and the main unit are connected and fixed in the following manner. First, in the accommodating state, the main upper jaw is inserted into the main cymbal (in the insertion portion of the extended cymbal according to the condition of the extension cymbal), and the second fitting male portion is the first fitting fitted to the front side of the main cymbal The mother, the main lord and the main priest will be connected to each other. On the other hand, in the extended state, the main upper jaw is pulled out from the main jaw toward the front side, and the third fitting male portion is fitted to the first mating female part of the front side of the main jaw. They are fixed to each other. In the fishing rod according to the first aspect of the invention, the fishing rod of the first aspect of the invention has a ring member which is detachably attached to the front end edge of the second fitting portion of the outer peripheral surface of the fishing rod. In the accommodating state in which the main upper cymbal is inserted into the main cymbal, if the main cymbal is excessively pushed into the main cymbal beyond the second fitting male portion, the ring member abuts against the front end surface of the main cymbal. It can prevent the main upper jaw from entering the main skeleton. In the extended state of the extension of the ridge root side of the main raft, the 1292696 (5) can be prevented from deepening into the main raft. The fishing rod according to the third aspect of the invention is the fishing rod according to the first or second aspect of the invention, wherein the bottom plug portion of the main upper cymbal has a sliding member that can project outwardly and outwardly from the outer peripheral surface. The bottom plug portion attached to the root side of the main upper jaw closes the root side of the main upper jaw, and prevents other body attached to the front side of the main upper jaw from being connected to the main upper jaw beyond the main upper jaw. The situation on the root side. The sliding member on the outer peripheral surface of the bottom plug portion abuts against the inner peripheral surface of the extended weir in the main jaw or the extension weir to prevent the swaying. In the fishing rod according to the fourth aspect of the invention, in the fishing rod according to the third aspect of the invention, the guide member for guiding the main upper jaw from the front side into the insertion portion is attached to the front end portion of the insertion portion of the extension raft. In the accommodating state in which the extension cymbal is inserted into the main cymbal, when the main cymbal is inserted into the accommodating state in the main cymbal, the guiding member smoothly guides the main cymbal to the inside of the extension cymbal. [Embodiment] [First Embodiment] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The fishing rod according to the first embodiment of the present invention is used for fishing rods, and as shown in Fig. 1, the main fishing rod 1 has an extension of the main crucible 1 and is connectable from the root side of the main crucible 1 . 2. The main upper jaw 3, which is freely accessible from the front side of the main cymbal 1. The front -8-1292696 (6) side of the main 竿3 is connected to a plurality of corpses (middle cymbals, cymbals, etc.) (not shown). These steroids are immersed in synthetic fibers such as carbon fibers. The pre-impregnated material of the reinforcing fiber is formed by firing. Each of the corpses on the front side of the main raft 1 is connected in a so-called extracted form, and is detachable from the anterior corpus callosum in the corpus callosum on the root side. The outer peripheral surface of the root side end portion of the dam body on the front side may be fitted to the front inner peripheral surface of the dam body adjacent to the root side of the shin side, and fixed to each other. A line catcher is disposed at the front end of the front end of the front end. Further, the main cymbal 1 and the extension 竿 2 on the base side of the ridge, and the main cymbal 1 and the main upper cymbal 3 on the front side, as will be described later, can be interconnected and fixed regardless of the extended state or the accommodating state. (For the main cymbal 1) The entire main cymbal 1 is a cylindrical body which has been subjected to a taper rod treatment which has a smaller diameter toward the front side. The front end portion is a tapered rod having a larger inclination than the other portions to make the front side smaller in diameter (the inner diameter is smaller than other portions), and the inner peripheral surface of the front end portion is in the range of a certain axial direction. The face of change. The face having a large inclination of the tapered face to the axial direction is the first fitting female portion (see Figs. 2 and 6). As will be described later in detail, the first fitting female portion 1a is fitted to the main upper jaw 3. As shown in Fig. 3, the tail ring portion 4 and the tail plug portion 5 are detachably attached to the root end portion of the main cymbal 1 (see Figs. 4 and 5). The tail ring portion 4 is a cylindrical member made of metal (aluminum alloy), and the inner peripheral surface of the thousand side frequency portions is the first female thread portion that forms the thread groove. -9 - 1292696 C7) The outer peripheral surface of the root end portion is partially recessed from the root side end, and the front side of the tail ring portion 4 is attached to the concave portion, and the tail ring portion 4 covers the concave portion. At this time, the tail ring portion 4 is externally defined to conform to the outer diameter of the main rim 1. The tail plug portion 5 is a cylindrical member made of a hard synthetic resin. The insert portion having a small diameter, the root end portion is a head portion which becomes a diameter, and the outer diameter thereof is such that the outer diameter portion of the tail ring portion 4 is inserted from the root side of the main crucible 1 into the inner portion thereof. . The inner circumferential surface of the insertion is a so-called surface which becomes smaller toward the root side. Here is the second fitting female part 5a. The second portion 5a of the tail plug portion 5 is extended to the front side of the extension 竿2 to be described later in the extended state (see Fig. 4). The outer circumference of the root side of the insertion portion is screwed to the first male thread portion of the first female screw of the tail ring portion 4 to form a thread groove. The inner circumference of the inner peripheral portion of the crotch portion end portion of the tail plug portion 5 is a groove 5b in which a recess is formed in the entire axial direction. The tail plug portion 5' is detachably attached to the main cymbal 1 via the tail ring portion 4 by screwing the first male screw portion to the first female screw portion of 4. (For the extension 竿 2) As shown in Fig. 3, the extension 竿 2 is composed of an insertion portion 6 inserted from the main cymbal i into the inside thereof, and a handle portion of a tubular member having a large diameter connected to the insertion portion 6. 7 constitutes. The edge is cut, and the diameter is set to be large on the front side. Insertion part of the reverse taper rod fitting female fitting surface is a textured partial surface (the head hooking groove tail ring portion is installed with the root side of the root side of the root side - 10 1292696 (8) The insertion portion 6 is insertable into the main jaw 1 The cylindrical body having the outer diameter of the inner portion. The insertion portion 6 is a member having a smaller diameter toward the root side. The inner peripheral surface of the insertion portion 6 that is in contact with the slide ring 25 when the main upper jaw 3 is accommodated is a diameter. The structure has no change or a very small tapered cone shape. The outer peripheral surface of the front end portion has a larger outer diameter than the other portions in a certain range in the axial direction, and here is the fitting male portion 6a. The outer diameter of the merging portion 6a is a reverse tapered surface of the second fitting female portion 5a of the tail plug portion 5 of the main cymbal 1 (see Fig. 4). The insertion portion 6 is disposed at The rubber outer casing 8 at the front end portion. The rubber outer casing 8 is a cylindrical member formed of a conventional elastic rubber and penetrating in the axial direction. The outer peripheral surface of the root side is cut off, and is inserted therein. The front end portion of the insertion portion 6 is fixed by an adhesive. The inner diameter of the front side of the rubber outer casing 8 is oriented. The tapered end of the side end portion is enlarged in diameter. A "crack" is formed in the axial direction from the end portion on the front side. The rubber outer casing 8 is a main upper jaw 3 to be joined to the front side of the main crucible 1 in a withdrawal manner. The structure for smoothly guiding the main upper jaw 3 into the insertion portion 6 when housed in the main cymbal 1. The handle portion 7 is larger in diameter than the insertion portion 6, and is the diameter of the outer peripheral surface of the main cymbal 1. The tubular member may be composed of a fiber-reinforced resin similarly to the main rim 1 or the insertion portion 6, or may be composed of another metal material. The insertion portion 6 is screwed into the state in which the insertion portion 6 is inserted from the front side. The handle portion 7 that is detachably attached to the conventional method is coupled to the end portion of the insertion portion 6. The handle portion 7 is evenly inserted into the insertion portion 6 or the insertion portion 6 is divided. The front end portion -11 - 1292696 (9) of the handle portion 7 may be inserted into the state of the front end portion -11 - 1292696 (9). The handle portion 7 may be detachably attached. The peripheral surface of the insertion portion 6 at the front end portion of the handle portion 7 may be provided. The hook member 9 is fixed. The hook member 9 is made of synthetic resin or light alloy. The outer diameter is the same as the size of the handle portion 7 and the main rim 1 to the bottom plug portion 5. The outer peripheral surface of the front side of the fastening member 9 has a small diameter, and the circumference of the small diameter is circumferential. The entire direction has a locking projection that protrudes outward. The locking projection can be fitted to the hook groove 5b of the tail plug portion 5 (see FIG. 5). In this embodiment, in order to connect and fix the insertion portion 6 and the main portion竿1, and the locking projection of the hooking member 9 and the hooking groove 5b of the tail plug portion 5 are used, but the following manner may be employed. For example, a thread is formed on a predetermined inner circumferential surface of the tail plug portion 5. The groove is formed as a female threaded portion, and the male screw member is disposed in place of the hooking member 9. The two are screwed together. In this case, the thread for screwing may also be a multi-start thread. (For the main upper 竿3) The main upper 竿3' is a tubular body that is connected to the front side of the main cymbal 1 in a freely accessible position (so-called extraction form), and the whole of which has a thin tapered rod at the tip end (see Fig. 1). (c)). As shown in Fig. 2 and Fig. 6, the main upper cymbal 3 has a relatively large range in the axial direction from the vicinity of the center in the axial direction to the outer peripheral surface on the front side, and forms a second larger diameter than the front and rear. Fitting public 3 a. The root end side outer peripheral surface is also formed as a third fitting male portion 3b. Became the second female thread portion of the threaded groove of the -12- 1292696 (11) of the third fitting male part 3b. The inner peripheral surface of the front side of the ring member 10 has a small diameter and can be positioned to abut against the section of the main upper jaw 3 described above. That is, the ring member 1 is disposed on the outer peripheral surface from the front side of the main upper jaw 3, and is detachably fixed by screwing the second female screw portion to the second male screw portion. As shown in detail in Fig. 7, the inner peripheral surface of the root end side of the main upper jaw 3 is a third female thread portion which is formed as a thread groove. The bottom plug portion 1 1 is screwed therein. The bottom plug portion 11 includes a main body portion 21, a rubber sheet 2 attached to the front end surface of the main body portion 21, a disc portion 23 attached to the root side of the main body portion 21, and a main portion. The elastic body 24 of the circumferential surface of 21 and the sliding ring portion 25 disposed on the circumferential surface of the elastic body 24. The main body portion 2 1, has a third male screw portion in which a thread groove is formed on the outer peripheral surface of the front side to be screwed to the third female screw portion of the main upper jaw 3. The root side of the third male thread portion has a small diameter after the diameter is formed to conform to the outer diameter of the main upper jaw 3, and a support portion is formed. On the other hand, in the center in the diameter direction of the root end side surface, there is a fourth male thread portion projecting from the root side. The main body portion 21 is made of a synthetic resin or a metal material. The interior can be hollowed out for weight reduction. Air holes may also be formed through the axial direction. The rubber sheet 22 is a plate member that is attached to close the front end surface of the main body portion 21. The rubber sheet 22 supports the middle jaw inserted into the main upper jaw 3. The rubber sheet 22 may also be bonded to the main body portion 2 1 or may be exchangeable. When the air hole penetrating through the axial direction is formed in the main body portion 21 as described above, the rubber sheet 22 also forms a through hole that communicates with the air hole. -14- 1292696 (12) The disk portion 23 has a screw hole (fourth female screw portion) screwed to the fourth male screw portion of the main body portion 21 in the vicinity of the center in the circumferential direction. The outer diameter is aligned with the main body portion 21. The elastic body 24 and the sliding ring 25 disposed on the circumferential surface of the elastic body 24, which will be described in detail below, are sandwiched between the main body portion 21 and the main body portion 21. The elastic body 24 is an annular member formed of an elastic rubber or a sponge material or the like. It is a support portion that is attached to the main body portion 21 and has a small diameter. A slip ring 25 is also attached to the outer circumference of the elastic body 24. The slide ring 25 is formed of a material having a certain elasticity such as a synthetic resin, and a crack portion is formed in a part of the ring portion. It is a polytetrafluoroethylene (approved trademark) resin that has a convex surface and is easily slidable on the outer peripheral surface. It is disposed on the support portion so as to protrude further outward than the outer diameter of the main body portion 21. When the main upper cymbal 3 is inserted into the insertion portion 6 of the main cymbal 1 or the extension cymbal 2, the sliding ring 25 abuts against the inner circumferential surface of the insertion portion 6, and prevents the main upper cymbal 3 from vibrating in the circumferential direction. (fixed to the connection between the main cymbal 1 and the extension 竿 2) The extension 竿 2 of the fishing rod is in a state of being housed in the main cymbal 1 (accommodating state) or a state of being extracted from the main cymbal 1 to the hand (extended state) ), can be linked to the main unit 1. During the fishing period, it may be adjusted to extend the extension 竿 2 from the main raft 1 to the hand, or to adjust the extension 竿 2 into the accommodating state of the main raft 1 to fish after the fish is caught. The length can be adjusted when removed. Specifically, as shown in Fig. 3, in the accommodating state, when the extension 竿 2 is inserted into the main cymbal 1 from the root side, the root side of the insertion portion 6 until the -15-(14) 1292696 will be main The 竿3 is pulled out toward the front side, and the third fitting male portion 3b is fitted to the front side of the first fitting female portion 1 a 'the main 竿 1 and the main upper cymbal 3 to be fixed. [Other Embodiments] As shown in Fig. 8, the second fitting 3a of the main upper jaw 3 may be formed at the front end portion, and the ring member 1 may be formed integrally at 3. That is, the main upper crucible 3 is formed of a prepreg material, and a large direct division T is also set on the front side of the second diameter fitting second male portion 3a, with the large diameter portion preventing the main upper crucible 3 from facing the main crucible. Insertion within 1. In this case, the third fitting male portion 3b of the main upper jaw 3 is constituted by another member and can be detachably attached from the main upper jaw 3. When the upper jaw 3 and the main jaw 1 are disassembled, the main upper portion 3b of the main upper jaw 3 is removed from the main upper jaw 3 to decompose the main upper jaw 3 and the main jaw 1. By constructing, it can also improve the appearance. [Effect of the Invention] According to the fishing rod of the present invention, the length between the main raft and the extension raft can be changed, and the fish can be easily taken, and the length of the entire fishing rod can be changed even in the fishing stage before the fish is taken, and the fishing can be performed according to the situation. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a fishing rod 1, an extension 竿 2, and a main upper raft 3 according to a first embodiment of the present invention. (a) is an extension of the raft 2 and the main raft to each other. The excessively large root side of the thick and large diameter portion is to be the main main 竿-17-