JP4248118B2

JP4248118B2 - Wooden rod

Info

Publication number: JP4248118B2
Application number: JP2000045663A
Authority: JP
Inventors: 睦雄佐橋; 章文牧野; 正直西山; 裕久中野
Original assignee: Takenaka Corp
Current assignee: Takenaka Corp
Priority date: 2000-02-23
Filing date: 2000-02-23
Publication date: 2009-04-02
Anticipated expiration: 2020-02-23
Also published as: JP2001234611A

Description

【０００１】
【発明の属する技術分野】
本発明は、取り付ける対象となる取付対象部（例えば、仕口金物）への当接取付部を端部に備えた木質棒状体本体（例えば、丸太材や角材や集成材等）を設け、先端部に別の挟持用ネジ部材（例えば、ボルトやナット等）を螺合させて前記当接取付部との協同作用によって前記取付対象部を挟持して前記木質棒状体本体を前記取付対象部に固定自在な取付用ネジ部材を前記当接取付部の埋設穴に埋設し、前記取付用ネジ部材に、前記取付対象部に対する挟持反力を確保自在な拡径部を設けてある木質棒状体に関する。
【０００２】
【従来の技術】
従来、この種の木質棒状体としては、仕口金物とボルト連結できるように、図９（イ）に示すように、木質棒状体本体３の端部に、端面に開口すると共に木質棒状体本体３の長手方向に沿ったボルト穴６を設け、木質棒状体本体３の側面に開口すると共に前記ボルト穴６の底部分に連通したナット配置穴３０を設け、ナット配置穴３０に、座金３１とナット３２を配置して当接取付部３３を構成したものがあった。そして、仕口金物２との連結にあたっては、前記当接取付部３３を仕口金物２にあてがった状態に配置し、仕口金物２側から前記ボルト穴６内に長尺の連結ボルト３４を挿通させ、前記ナット配置穴３０に露出した連結ボルト部分に前記座金３１を外嵌させると共にナット３２を螺合させ、連結ボルト３４（又は、ナット３２）を締め付けることによって、仕口金物２と当接取付部３３とをボルト拡径頭部３４ａとナット３２とで挟持して連結するものであった。
尚、金属に比べて強度が低い木質材の連結であることから、連結強度を確保する意味で、木質棒状体本体３の端部から前記ナット３２までの位置は充分に確保する必要があり、それに伴って、前記連結ボルト３４は長尺となる。
従って、このような木質棒状体の取り付けにおいては、前記連結ボルト３４は、仕口金物２側から挿入する関係上、前記仕口金物２側にそれを可能とする空間が必要となる。
しかしながら、仕口部分の構造は、常に、前記仕口金物２側に充分な空間が得られるとは限らず、むしろ、制約を受ける場合も多い。
即ち、上述の木質棒状体によれば、前記仕口金物２側に連結ボルト配置空間が得られないような場合は、取付作業そのものが出来なかったり、非常に煩雑になったりするという問題点がある。
このような問題点を解消する木質棒状体としては、図９（ロ）に示すように、木質棒状体本体３の端部に、端面に開口すると共に木質棒状体本体３の長手方向に沿ったボルト穴６を設け、木質棒状体本体３の側面に開口すると共に前記ボルト穴６の底部分に連通したナット配置穴３０を設け、前記ボルト穴には取付用ネジ部材３５を挿通させる一方、ナット配置穴３０には、座金３１とナット３２を配置し、前記ナット配置穴３０に露出した前記取付用ネジ部材３５の基端部に、前記座金３１を外嵌させると共にナット３２を螺合させて、前記取付用ネジ部材３５の先端部が当接取付部３３の表面から突出するように構成することが考えられる。
そして、仕口金物２との連結にあたっては、仕口金物２のボルト穴３６に前記取付用ネジ部材３５の先端部が挿通する状態に木質棒状体本体３を配置し、仕口金物２側から前記取付用ネジ部材３５にナット３７を螺合させて締め付けることによって、仕口金物２と当接取付部３３とを一対のナット３２・３７で挟持して連結するものである。
【０００３】
【発明が解決しようとする課題】
上述した木質棒状体によれば、木質棒状体本体の端面から前記取付用ネジ部材が突出している関係上、仕口金物に取り付ける際には、仕口金物のボルト穴に前記取付用ネジ部材が挿通する方向、即ち、木質棒状体の長手方向に沿って仕口金物に近接させるように配置する必要がある。
しかし、木質棒状体の両端に対応した各仕口金物が予め設置されているような場合には、両仕口金物間に木質棒状体をその径方向に沿って嵌め入れるより他なく、上述の提案される木質棒状体によれば、取付用ネジ部材が木質棒状体本体の両端から突出しているから、両仕口金物間隔より木質棒状体の長さが大となって配置できなくなる。即ち、配置方式が限られると言う問題点がある。
【０００４】
従って、本発明の目的は、上記問題点を解消し、設置環境に左右され難く、確実に設置しやすい木質棒状体を提供するところにある。
【０００５】
【課題を解決するための手段】
請求項１の発明の特徴構成は、図３・４・６・７・８に例示するごとく、取り付ける対象となる取付対象部２への当接取付部３Ａを端部に備えた木質棒状体本体３を設け、先端部に別の挟持用ネジ部材４を螺合させて前記当接取付部３Ａとの協同作用によって前記取付対象部３Ａを挟持して前記木質棒状体本体３を前記取付対象部２に固定自在な取付用ネジ部材５を前記当接取付部２の埋設穴６に埋設し、前記取付用ネジ部材５に、前記取付対象部２に対する挟持反力を確保自在な拡径部Ｋを設けてある木質棒状体において、前記当接取付部３Ａに埋設された前記取付用ネジ部材５は、その先端部が、前記当接取付部３Ａの表面と面一、又は、前記埋設穴６内に入り込む状態に配置してあるところにある。
【０００６】
請求項１の発明の特徴構成によれば、前記当接取付部に埋設された前記取付用ネジ部材は、その先端部が、前記当接取付部の表面と面一、又は、前記埋設穴内に入り込む状態に配置してあるから、木質棒状体本体の両端に余分な出っ張りを無くすことができ、例えば、木質棒状体の両端に対応する両取付対象部が、予め設置されているような環境下においても、両取付対象部間に木質棒状体をその径方向に沿って嵌め入れることが可能となり、効率よく確実に配置することが可能となる。そして、取付対象部への具体的な取り付けは、取付対象部に当接取付部が対応するように木質棒状体を配置した状態で、取付対象部側から、前記取付用ネジ部材に対して別の挟持用ネジ部材を螺合締付することで、当接取付部と取付対象部とを、前記挟持用ネジ部材と前記取付用ネジ部材の拡径部とで挟持する状態に連結することが可能となる。
また、取り付けに使用される別の挟持用ネジ部材は、従来のように、ナット部材に直接螺合させるものではなく、取付用ネジ部材の先端部に螺合させればよいから、比較的、短尺のものを使用することが可能となり、長尺の連結ボルトを使用する従来の木質棒状体に比べて、取付対象部側に大きなスペースが無くても、容易に設置取り付けすることが可能となる。
即ち、木質棒状体の設置環境に左右され難く、確実に設置することが可能となる。
【０００７】
請求項２の発明の特徴構成は、図４・６・７・８に例示するごとく、取り付ける対象となる取付対象部２への当接取付部３Ａを端部に備えた木質棒状体本体３を設け、先端部に別の挟持用ネジ部材４を螺合させて前記当接取付部３Ａとの協同作用によって前記取付対象部２を挟持して前記木質棒状体本体３を前記取付対象部２に固定自在な取付用ネジ部材５を前記当接取付部３Ａの埋設穴６に埋設し、前記取付用ネジ部材５に、前記取付対象部２に対する挟持反力を確保自在な拡径部Ｋを設けてある木質棒状体において、前記拡径部Ｋは、取付用ネジ部材本体５ｂに螺合自在なナット部材５ａで構成し、前記ナット部材５ａは、木質棒状体本体３に対してナット軸芯周りの回転を阻止された状態に埋設してあると共に、螺合した前記取付用ネジ部材本体５ｂに作用する前記埋設穴６への押込方向の力、及び、引抜方向の力を受止自在に前記木質棒状体本体３に設けてあり、前記取付用ネジ部材５を前記埋設穴６に挿抜操作自在な挿抜操作部８を、前記取付用ネジ部材５に設け、前記埋設穴６は、前記取付用ネジ部材５の長さ以上の深さに形成してあるところにある。
【０００８】
請求項２の発明の特徴構成によれば、木質棒状体本体に対してナット軸芯周りの回転を阻止された状態に埋設してあるナット部材と、取付用ネジ部材本体とを螺合させた状態で、前記挿抜操作部によって取付用ネジ部材の挿抜操作を行うことによって、例えば、前記埋設穴深部に対して螺進操作することによって、前記取付用ネジ部材は、前記埋設穴内に全体を納めることが可能となる。その結果、前述の従来の木質棒状体のように、端部に突出している連結ボルトが障害となって取付対象部に取り付けることが出来ないと言った問題を解消することができ、様々な設置環境に対応することが可能となる。
また、前記挿抜操作部によって前記埋設穴から取付用ネジ部材を引き抜く方向に操作することによって、木質棒状体本体の端部に前記取付用ネジ部材が突出する状態にすることが可能となる。その結果、前述の従来の木質棒状体のように、長尺の連結ボルトを取付対象部側から螺進操作しなくても、短尺の別の挟持用ネジ部材を前記取付用ネジ部材に螺合することで、取付対象部に対して簡単に木質棒状体を取り付けることができるようになり、様々な設置環境に対する適応性をより向上させることが可能となる。
更には、前記ナット部材は、木質棒状体本体に対してナット軸芯周りの回転を阻止された状態に埋設してあるから、取付用ネジ部材本体や、別の挟持用ネジ部材の回転操作時に共回りすることを防止でき、ネジ部材の回転操作をより省力化することができる。また、ナット部材の回り止めを必要としないから、前記ナット部材埋設部周囲に余分なスペース（回り止め操作用空間）を確保する必要が無くなり、木質棒状体の断面欠損をより縮小して、連結部の強度維持を図り易くすることが可能となる。また、前記ナット部材は、螺合した前記取付用ネジ部材本体に作用する前記埋設穴への押込方向の力、及び、引抜方向の力を受止自在に前記木質棒状体本体に設けてあるから、木質棒状体全体として見たときの軸芯方向の圧縮力が作用したときに、前記ナット部材をもその応力を負担することが可能となり、ナット部材配置部分の木質棒状体欠損による強度低下を緩和することが可能となる。
【０００９】
請求項３の発明の特徴構成は、図４・５・６・８に例示するごとく、前記拡径部Ｋは、取付用ネジ部材本体５ｂに螺合自在なナット部材５ａで構成してあるところにある。
【００１０】
請求項３の発明の特徴構成によれば、請求項１の発明による作用効果を叶えることができるのに加えて、前記拡径部は、取付用ネジ部材本体に螺合自在なナット部材で構成してあるから、非常に入手しやすい既製の部品を使用して取付用ネジ部材を構成することができ、コストダウンを図ることができることに加えて、取付用ネジ部材本体とナット部材とを相対的に螺進させることによって、互いの軸芯方向での相対位置関係を変更することが可能となり、前記埋設穴の深さに応じて取付用ネジ部材を最適な深さ位置にセットすることが、簡単に且つ迅速に行うことが可能となる。
【００１１】
請求項４の発明の特徴構成は、図３・４・８に例示するごとく、前記ナット部材５ａは、木質棒状体本体３に対してナット軸芯周りの回転を阻止された状態に埋設してあると共に、螺合した前記取付用ネジ部材本体５ｂに作用する前記埋設穴６への押込方向の力、及び、引抜方向の力を受止自在に前記木質棒状体本体３に設け、前記取付用ネジ部材５を前記埋設穴６に挿抜操作自在な挿抜操作部８を、前記取付用ネジ部材５に設けてあるところにある。
【００１２】
請求項４の発明の特徴構成によれば、請求項３の発明による作用効果を叶えることができるのに加えて、当接取付部に取付用ネジ部材を設置するのに、木質棒状体本体に対してナット軸芯周りの回転を阻止された状態に埋設してあるナット部材に、挿抜操作部によって前記取付用ネジ部材本体を前記埋設穴を通して螺合させるだけの手間で、簡単にセットすることが可能となる。
また、前記ナット部材は、木質棒状体本体に対してナット軸芯周りの回転を阻止された状態に埋設してあるから、取付用ネジ部材本体や、別の挟持用ネジ部材の回転操作時に共回りすることを防止でき、ネジ部材の回転操作をより効率よく実施することができる。また、ナット部材の回り止めを必要としないから、前記ナット部材埋設部周囲に余分なスペース（回り止め操作用空間）を確保する必要が無くなり、木質棒状体の断面欠損をより縮小して、連結部の強度維持を図り易くすることが可能となる。また、前記ナット部材は、螺合した前記取付用ネジ部材本体に作用する前記埋設穴への押込方向の力、及び、引抜方向の力を受止自在に前記木質棒状体本体に設けてあるから、木質棒状体全体として見たときの軸芯方向の圧縮力が作用したときに、前記ナット部材をもその応力を負担することが可能となり、ナット部材配置部分の木質棒状体欠損による強度低下を緩和することが可能となる。
【００１３】
請求項５の発明の特徴構成は、図４・６に例示するごとく、前記取付用ネジ部材５は、前記取付用ネジ部材本体５ｂの先端部に、雌ねじ部を内周部に備えた筒形ナット５ｃを螺合して構成してあるところにある。
【００１４】
請求項５の発明の特徴構成によれば、請求項１〜４の何れかの発明による作用効果を叶えることができるのに加えて、取付用ネジ部材本体と筒形ナットとを螺合させて取付用ネジ部材を構成してあるから、前記取付用ネジ部材本体と筒形ナットとの螺合代の長さ内において取付用ネジ部材の全長を調整することが可能となる。その結果、部品（木質棒状体本体や取付用ネジ部材等）の切断加工や切削加工を実施しなくても、前記埋設穴の深さに合わせて取付用ネジ部材を適切な長さに調整して設置することが可能となり、木質棒状体形成手間の軽減化を図り易くなる。また、埋設穴深さの異なる別の木質棒状体にも当該取付用ネジ部材を兼用化することも可能となり、部材コストの低減化を図ることが可能となる。
【００１５】
尚、上述のように、図面との対照を便利にするために符号を記したが、該記入により本発明は添付図面の構成に限定されるものではない。
【００１６】
【発明の実施の形態】
以下に本発明の実施の形態を図面に基づいて説明する。尚、図面において従来例と同一の符号で表示した部分は、同一又は相当の部分を示している。
【００１７】
図１は、本発明の木質棒状体１の一例である丸太梁１Ａを示すもので、前記丸太梁１Ａは、その両端部それぞれを、躯体に固定された仕口金物（取付対象部に相当）２にボルト連結してある。
【００１８】
前記丸太梁１Ａは、図２〜４に示すように、仕口金物２への当接取付部３Ａを端部に備えた梁本体（木質棒状体本体に相当）３を設け、先端部に別の挟持用ボルト（挟持用ネジ部材に相当）４を螺合させて前記仕口金物２との協同作用によって前記仕口金物２を挟持して前記梁本体３を前記仕口金物２に固定自在な取付用ネジ部材５を前記当接取付部３Ａのボルト穴（埋設穴に相当）６に埋設して構成してある。
前記梁本体３は、丸太材から構成してあり、上述の通りボルト穴６を、梁本体３端面に開口する状態に四つ設けてある。そして、梁本体３の側面に開口すると共に前記ボルト穴６の底部分に各別に連通した四つのナット配置穴７もそれぞれ設けてある。また、後述する固定ボルト１１用の螺合穴１２も、梁本体３の側面に開口させた状態に設けてある。
【００１９】
前記ボルト穴６は、図４・５に示すように、深さ寸法を四つの内の二つずつ異ならせてあり、それに伴って、ナット配置穴７も、二つずつ、梁端部からの設置位置寸法が異なるように設けてある。これにより、ナット配置穴７部分における丸太断面の欠損を、一断面に集中させずに分散することができ、梁本体の強度低下を抑制する効果がある。
因みに、前記四つのボルト穴６は、梁軸芯に沿うように設けてあり、丸太横断面で円中心に点対称な位置に配置されたボルト穴６どうしが同じ長さになるような対に形成してある。
一方、前記ナット配置穴７は、文字通り、前記取付用ネジ部材５の一構成部品であるナット部材（拡径部Ｋに相当し、当該実施形態では角ナット）５ａが嵌合配置できる寸法設定の角穴で構成してある。また、ナット部材５ａをナット配置穴７の底まで嵌入することで、ナット軸芯が前記ボルト穴６の軸芯と一致するようにナット配置穴７は形成してある。そして、嵌入したナット部材５ａは、外周面がナット配置穴７の対応する内周面に接当することでナット軸芯周りの回転が阻止された状態に納まる。
【００２０】
前記取付用ネジ部材５は、外周部に雄ネジを形成したネジ本体（取付用ネジ部材本体に相当）５ｂと、そのネジ本体５ｂに螺合自在な前記ナット部材５ａと、前記ネジ本体５ｂに螺合自在な筒形ナット５ｃとを備えて構成してある。
前記ネジ本体５ｂは、図４に示すように、両端部の所定範囲にネジ溝を形成した雄ネジ部材で構成してある。
前記ナット部材５ａは、上述の通り四角形の角ナットによって形成してあり、前記ネジ本体５ｂの基端部の雄ネジ部に螺合状態に配置される（図５参照）。
前記筒形ナット５ｃは、前記ネジ本体５ｂ、及び、前記挟持用ボルト４に螺合自在に形成してあり、前記ネジ本体５ｂの先端部の雄ネジ部に螺合状態に配置される。また、筒形ナット５ｃの端面部には、ドライバー等の治具を嵌合させてナット軸芯回りに回転操作自在な治具嵌合用溝（挿抜操作部に相当）８を形成してある（図３・４参照）。
そして、梁本体３への取付用ネジ部材５の埋設手順の一例は、予め、ネジ本体５ｂの先端部雄ネジ部のネジ終端まで前記筒形ナット５ｃを嵌合締付しておくと共に、ナット配置穴７に前記ナット部材５ａを嵌入配置しておき、前記ネジ本体５ｂを、基端部から前記ボルト穴６に挿入し、前記ナット部材５ａに螺合させることで実施する（図４（イ）参照）。この螺合操作は、前記治具嵌合用溝８にドライバー等の治具を嵌合させて行うことができる。
また、梁本体３の当接取付部３Ａに埋設された前記取付用ネジ部材５は、その先端部が、前記当接取付部３Ａの表面と面一、又は、前記ボルト穴６内に入り込む状態に配置してある。従って、当接取付部３Ａの端面から突出するものがなく、他物と干渉するのを防止することが可能となり、丸太梁１Ａの取扱性が良好な上、仕口金物２への丸太梁１Ａの取付作業時にも、同様の作用を期待することが可能となり、効率よく梁取り付けを行うことが可能となる。
【００２１】
前記仕口金物２を説明すると、図２・３・４に示すように、金物本体２ａは、躯体に固定してあり、その金物本体２ａに、前記梁本体３の端面を当接状態に取り付けるフランジ部２ｂを設けると共に、梁本体３の当接取付部３Ａを下方から受ける被載置部２ｃを設けて構成してある。
前記フランジ部２ｂには、前記梁本体３の各ボルト穴６に対応する位置に、各別に第一ボルト挿通孔９を形成してある。
また、前記被載置部２ｃには、第二ボルト挿通孔１０を設けてあり、前記被載置部２ｃ上に載置させた梁本体３を固定ボルト１１で固定できるように構成してある。
前記被載置部２ｃを設けてあることによって、丸太梁１Ａを仕口金物２に取り付ける際に、丸太梁１Ａを仮置き状態で作業することができ、梁取付作業を効率よく実施することが可能となる。更には、前記被載置部２ｃで梁本体３を固定することによって、梁のせん断抵抗力の増強を図ることが可能となる。
【００２２】
次に、仕口金物２への丸太梁１Ａの取付手順を説明する。
［１］予め、取付用ネジ部材５を埋設しておいた梁本体３を、仕口金物２の被載置部２ｃ上に載置する（図４（イ）参照）。
［２］前記仕口金物２の第一ボルト挿通孔９を通して、挟持用ボルト４を前記取付用ネジ部材５に螺合させて締め付ける。詳しくは、前記筒形ナット５ｃに挟持用ボルト４を螺合して締め付けることによって、前記ナット部材５ａと挟持用ボルト４拡径頭部との協同作用で前記当接取付部３Ａとフランジ部２ｂとを挟持し、丸太梁１Ａを仕口金物２に固定するものである（図４（ロ）参照）。
［３］前記被載置部２ｃの第二ボルト挿通孔１０に固定ボルト１１を挿通させると共に、螺合穴１２に螺合させて締め付ける。
［４］前記ナット配置穴７に配置されたナット部材５ａ周りの隙間に、エポキシ樹脂製の充填材１３を充填して、丸太梁１Ａに断面欠損が生じないようにする。
【００２３】
本実施形態の丸太梁によれば、梁本体３の両端に余分な出っ張りを無くすことができ、効率よく確実に配置することが可能となる他、仕口金物２からのボルト固定は、取付用ネジ部材５の先端部に短尺の挟持用ボルト４を螺合させればよいから、仕口金物２側に大きな取付スペースが無くても、容易に、且つ、確実に設置取り付けすることが可能となる。
また、前記ナット部材５ａは、梁本体３に対してナット軸芯周りの回転を阻止された状態に埋設してあるから、ネジ本体５ｂや、挟持用ボルト４の回転操作時に共回りすることを防止できると共に、ナット配置穴７の大きさは、ナット回り止め用治具等を使用する必要がないことから、必要最小限度の大きさに設定することができ、ネジ部材の回転操作の効率化、及び、丸太梁１Ａの断面欠損の縮小化を図ることが可能となり、強度の高い梁連結部を効率よく形成することが可能となる。
【００２４】
〔別実施形態〕
以下に他の実施の形態を説明する。
【００２５】
〈１〉木質棒状体１は、先の実施形態で説明した丸太梁に限るものではなく、例えば、木材や集成材からなる角材であってもよく、更には、梁以外の部材、例えば、柱や筋交いや、木質トラスの構造材等であってもよく、それらを総称して木質棒状体という。
〈２〉取付用ネジ部材は、先の実施形態で説明したナット部材（拡径部Ｋに相当）５ａ・ネジ本体（取付用ネジ部材本体に相当）５ｂ・筒形ナット５ｃからなる構成に限るものではなく、例えば、図６に示すように、ナット部材５ａに替えて、ネジ本体５ｂの一部に、一体的に形成された鍔状部（拡径部Ｋに相当）１４を設けてあってもよい。この場合は、前記埋設穴６は、図に示すように、取付用ネジ部材を、木質棒状体１の側方から嵌め入れるように形成しておく必要がある。
また、図７に示すように、ネジ本体５ｂと筒形ナット５ｃとが溶接や接着等の接合手段によって一体的に形成してあるものであってもよい。
また、図８に示すように、ナット部材５ａとネジ本体５ｂとからなる構成であってもよい。この場合は、ネジ本体５ｂの端面部に、治具嵌合用溝（挿抜操作部に相当）８を形成してあれば、ネジ本体５ｂのボルト穴６への設置を効率よく実施することができる。そして、この実施形態の場合、挟持用ネジ部材４は、図８（イ）に示すように、前記ネジ本体５ｂに螺合する筒形ナット（拡径頭部付）１５で構成したり、図８（ロ）に示すように、取付対象部２の所定位置に木質棒状体１を配置した後に、取付対象部２側から前記ネジ本体５ｂを捻り出し、その先端部に螺合させるナット１６で構成するものであってもよい。図８（ロ）の実施形態品の場合、前記ボルト穴６は、前記ネジ本体５ｂの長さ以上の深さに形成してある。
従って、前記拡径部や、取付用ネジ部材本体や、挟持用ネジ部材は、様々な形態を採用することが可能である。勿論、前記ナット１６についても、四角形のナット部材に限るものではなく、例えば、６角ナット・８角ナット等、様々なものを使用することが可能である。
【図面の簡単な説明】
【図１】丸太梁の取付状況を示す側面図
【図２】丸太梁の取付状況を示す要部斜視図
【図３】丸太梁の取り付け状態を示す要部分解斜視図
【図４】丸太梁の取り付け状態を示す断面図
【図５】丸太梁の横断面図
【図６】別実施形態の木質棒状体を示す要部の一部切欠き説明図
【図７】別実施形態の木質棒状体を示す要部の一部切欠き説明図
【図８】別実施形態の木質棒状体を示す要部の一部切欠き説明図
【図９】従来の木質棒状体を示す要部の一部切欠き説明図
【符号の説明】
２取付対象部
３木質棒状体本体
３Ａ当接取付部
４挟持用ネジ部材
５取付用ネジ部材
５ａナット部材
５ｂ取付用ネジ部材本体
５ｃ筒形ナット
６埋設穴
８挿抜操作部
Ｋ拡径部[0001]
BACKGROUND OF THE INVENTION
The present invention provides a wood rod body body (for example, log material, square material, laminated material, etc.) provided with an abutting attachment portion at an end to an attachment target portion (for example, a fitting) to be attached, A screw member for clamping (for example, a bolt or a nut), for example, is screwed to the portion, and the attachment target portion is clamped by a cooperative action with the abutting attachment portion, so that the wood rod-like body is attached to the attachment target portion. The present invention relates to a wood rod-like body in which a fixed mounting screw member is embedded in a buried hole of the abutting mounting portion, and the mounting screw member is provided with an enlarged diameter portion capable of ensuring a clamping reaction force against the mounting target portion. .
[0002]
[Prior art]
Conventionally, as this kind of wood rod-shaped body, as shown in FIG. 9 (a), the wood rod-shaped body main body 3 is opened at the end face of the wood rod-shaped body 3 as shown in FIG. 3 is provided with a bolt hole 6 along the longitudinal direction of the wood rod body 3 and is provided with a nut arrangement hole 30 which opens on the side surface of the wood rod body 3 and communicates with a bottom portion of the bolt hole 6. There was one in which the nut 32 was arranged to constitute the contact mounting portion 33. Then, when connecting to the fitting 2, the contact mounting portion 33 is arranged in a state of being applied to the fitting 2, and a long connecting bolt 34 is inserted into the bolt hole 6 from the fitting 2 side. By inserting the washer 31 into the connecting bolt portion exposed in the nut arrangement hole 30 and screwing the nut 32 and tightening the connecting bolt 34 (or the nut 32), The contact mounting portion 33 is connected by being clamped between the bolt enlarged diameter head portion 34 a and the nut 32.
In addition, since it is the connection of the wood material whose strength is lower than that of metal, it is necessary to sufficiently secure the position from the end of the wood rod body 3 to the nut 32 in order to ensure the connection strength. Accordingly, the connecting bolt 34 becomes long.
Therefore, in attaching such a wooden rod-like body, the connecting bolt 34 is inserted from the fitting 2 side, so that a space enabling it is required on the fitting 2 side.
However, the structure of the joint portion does not always provide a sufficient space on the joint fitting 2 side, but rather is often restricted.
That is, according to the above-mentioned wood rod-like body, when the connecting bolt arrangement space cannot be obtained on the joint fitting 2 side, there is a problem that the mounting work itself cannot be performed or it becomes very complicated. is there.
As shown in FIG. 9 (b), the wooden rod-like body that solves such a problem has an opening at the end face along the longitudinal direction of the wooden rod-like main body 3 at the end of the wooden rod-like main body 3. A bolt hole 6 is provided, and a nut arrangement hole 30 that opens to the side surface of the wood rod body 3 and communicates with a bottom portion of the bolt hole 6 is provided. A screw member 35 for attachment is inserted into the bolt hole, while a nut A washer 31 and a nut 32 are arranged in the arrangement hole 30, and the washer 31 is externally fitted to the proximal end portion of the mounting screw member 35 exposed in the nut arrangement hole 30 and the nut 32 is screwed. It is conceivable that the front end portion of the mounting screw member 35 protrudes from the surface of the contact mounting portion 33.
And when connecting with the fitting 2, the wooden rod body 3 is arranged in a state where the tip of the mounting screw member 35 is inserted into the bolt hole 36 of the fitting 2, and from the fitting 2 side. The nut 37 is screwed onto the mounting screw member 35 and tightened, whereby the fitting 2 and the contact mounting portion 33 are sandwiched and connected by a pair of nuts 32 and 37.
[0003]
[Problems to be solved by the invention]
According to the wood rod-shaped body described above, when the mounting screw member protrudes from the end surface of the wood rod-shaped body, the mounting screw member is inserted into the bolt hole of the joint metal fitting. It is necessary to arrange so as to be close to the fitting in the insertion direction, that is, along the longitudinal direction of the wooden rod.
However, in the case where each joint fitting corresponding to both ends of the wooden rod-shaped body is installed in advance, there is no other way than fitting the wooden rod-shaped body between the joint fittings along the radial direction. According to the proposed wooden rod-shaped body, the mounting screw members protrude from both ends of the wooden rod-shaped body, so that the length of the wooden rod-shaped body becomes larger than the interval between both fittings and cannot be arranged. That is, there is a problem that the arrangement method is limited.
[0004]
Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide a wooden rod-like body that is not easily affected by the installation environment and is easy to install reliably.
[0005]
[Means for Solving the Problems]
As shown in FIGS. 3, 4, 6, 7 and 8, the characteristic configuration of the invention of claim 1 is a wood rod-like body provided with an abutting attachment portion 3A at an end to an attachment target portion 2 to be attached. 3, and another clamping screw member 4 is screwed to the tip, and the attachment target portion 3A is clamped by the cooperative action with the abutting attachment portion 3A to attach the wooden rod body 3 to the attachment target portion. The mounting screw member 5 that can be fixed to the mounting portion 2 is embedded in the embedded hole 6 of the abutting mounting portion 2, and the mounting screw member 5 has an enlarged diameter portion K that can secure a clamping reaction force against the mounting target portion 2. The mounting screw member 5 embedded in the contact mounting portion 3A is flush with the surface of the contact mounting portion 3A or the embedded hole 6 It is located in a state where it goes inside.
[0006]
According to the characteristic configuration of the invention of claim 1, the mounting screw member embedded in the contact mounting portion has a tip portion flush with the surface of the contact mounting portion or in the embedded hole. Since it is arranged in the state of entering, it is possible to eliminate excessive protrusions at both ends of the wooden rod body, for example, in an environment where both mounting target parts corresponding to both ends of the wooden rod body are installed in advance. In this case, it is possible to fit the wooden rod-like body between the two attachment target parts along the radial direction, and it is possible to efficiently and reliably arrange the rods. Then, specific attachment to the attachment target portion is performed separately from the attachment target member from the attachment target portion side in a state where the wooden rod-like body is arranged so that the contact attachment portion corresponds to the attachment target portion. By screwing and tightening the clamping screw member, the abutting attachment portion and the attachment target portion can be connected in a state of being sandwiched between the clamping screw member and the enlarged diameter portion of the attachment screw member. It becomes possible.
Further, another clamping screw member used for mounting is not directly screwed to the nut member as in the prior art, but may be screwed to the tip of the mounting screw member. It becomes possible to use a short one, and it is possible to easily install and install even if there is no large space on the mounting target side compared to a conventional wooden rod-like body using a long connecting bolt. .
That is, it is difficult to be influenced by the installation environment of the wooden rod-like body, and it can be reliably installed.
[0007]
As illustrated in FIGS. 4, 6, 7 and 8, the characteristic configuration of the invention of claim 2 is a wood rod-like body 3 provided with an abutting attachment portion 3A at an end to an attachment target portion 2 to be attached. Provided and screwed with another clamping screw member 4 at the tip, and clamped the mounting target portion 2 by the cooperative action with the abutting mounting portion 3A, and the wooden rod body 3 is attached to the mounting target portion 2 The fixing screw member 5 that can be fixed is embedded in the embedded hole 6 of the contact mounting portion 3A, and the mounting screw member 5 is provided with an enlarged diameter portion K that can secure a clamping reaction force against the mounting target portion 2. In the wood rod-like body, the enlarged diameter portion K is constituted by a nut member 5a that can be screwed into the mounting screw member main body 5b, and the nut member 5a is around the nut axis with respect to the wood rod-like body 3. Embedded in a state in which the rotation of the screw is blocked and screwed into the mounting screws. The wooden rod-shaped body 3 is provided in the wooden rod body 3 so as to be able to receive the force in the pushing direction and the pulling-out force applied to the embedded hole 6 acting on the member main body 5 b, and the mounting screw member 5 is attached to the embedded hole 6. The mounting screw member 5 is provided with an insertion / extraction operation portion 8 that can be freely inserted and removed, and the embedded hole 6 is formed at a depth greater than the length of the mounting screw member 5.
[0008]
According to the characteristic configuration of the invention of claim 2, the nut member embedded in a state in which the rotation around the nut axis is prevented with respect to the wooden rod body and the mounting screw member body are screwed together. In this state, by inserting / removing the mounting screw member by the insertion / extraction operation portion, for example, by screwing the mounting screw member into the embedded hole deep portion, the mounting screw member is entirely accommodated in the embedded hole. It becomes possible. As a result, like the above-mentioned conventional wooden rod-like body, it is possible to eliminate the problem that the connection bolt protruding at the end part becomes an obstacle and cannot be attached to the attachment target part, and various installations It becomes possible to cope with the environment.
Moreover, it becomes possible to make the said mounting screw member protrude in the edge part of a wooden rod-shaped main body by operating in the direction which pulls out the mounting screw member from the said embedment hole by the said insertion / extraction operation part. As a result, another short clamping screw member can be screwed onto the mounting screw member without screwing the long connecting bolt from the mounting target side as in the conventional wood rod described above. By doing so, it becomes possible to easily attach the wooden rod-like body to the attachment target portion, and it becomes possible to further improve the adaptability to various installation environments.
Furthermore, since the nut member is embedded in a state in which the rotation around the nut axis is prevented with respect to the wood rod main body, during the rotation operation of the mounting screw member main body or another clamping screw member Co-rotation can be prevented, and the rotation operation of the screw member can be further saved. In addition, since it is not necessary to prevent the nut member from rotating, it is no longer necessary to secure an extra space around the nut member burying section (rotating operation space). It is possible to easily maintain the strength of the part. In addition, the nut member is provided on the wooden rod main body so as to be able to receive the force in the pushing direction into the embedded hole and the force in the pulling direction acting on the screw member main body for screwing. When the compressive force in the axial direction when viewed as the whole wood rod-like body is applied, the nut member can also bear the stress, and the strength reduction due to the wood rod-like body loss of the nut member arrangement portion is reduced. It can be mitigated.
[0009]
The characteristic configuration of the invention of claim 3 is that, as illustrated in FIGS. 4, 5, 6 and 8, the enlarged diameter portion K is constituted by a nut member 5a which can be screwed into the mounting screw member main body 5b. It is in.
[0010]
According to the characteristic configuration of the invention of claim 3, in addition to achieving the operational effect of the invention of claim 1, the enlarged-diameter portion is constituted by a nut member that can be screwed into the mounting screw member main body. Therefore, the mounting screw member can be configured by using off-the-shelf parts that are very easy to obtain, and the cost can be reduced. Thus, the relative positional relationship in the axial direction can be changed, and the mounting screw member can be set at the optimum depth position according to the depth of the embedded hole. It is possible to carry out easily and quickly.
[0011]
The characteristic configuration of the invention of claim 4 is that the nut member 5a is embedded in a state where rotation around the nut axis is prevented with respect to the wood rod body 3 as illustrated in FIGS. In addition, a force in the pushing direction and a force in the pulling direction to the embedded hole 6 acting on the screw member body 5b for screwing are provided on the wooden rod body 3 so as to be freely received, The attachment screw member 5 is provided with an insertion / extraction operation portion 8 that allows the screw member 5 to be inserted into and removed from the embedded hole 6.
[0012]
According to the characteristic configuration of the invention of claim 4, in addition to being able to achieve the function and effect of the invention of claim 3, in order to install the mounting screw member in the abutting mounting portion, On the other hand, the nut member embedded in a state in which rotation around the nut shaft core is prevented is easily set by simply inserting and screwing the mounting screw member body through the embedded hole by the insertion / extraction operation portion. Is possible.
Further, since the nut member is embedded in a state in which the rotation around the nut axis is prevented with respect to the wood rod body, the nut member is shared during the rotation operation of the mounting screw member body or another clamping screw member. It is possible to prevent the screw member from rotating, and the screw member can be rotated more efficiently. In addition, since it is not necessary to prevent the nut member from rotating, it is no longer necessary to secure an extra space around the nut member burying section (rotating operation space). It is possible to easily maintain the strength of the part. In addition, the nut member is provided on the wooden rod main body so as to be able to receive the force in the pushing direction into the embedded hole and the force in the pulling direction acting on the screw member main body for screwing. When the compressive force in the axial direction when viewed as the whole wood rod-like body is applied, the nut member can also bear the stress, and the strength reduction due to the wood rod-like body loss of the nut member arrangement portion is reduced. It can be mitigated.
[0013]
The characteristic configuration of the invention of claim 5 is as shown in FIGS. 4 and 6, wherein the mounting screw member 5 is a cylindrical shape provided with a female screw portion on the inner peripheral portion at the tip of the mounting screw member main body 5 b. The nut 5c is screwed together.
[0014]
According to the characteristic configuration of the invention of claim 5, in addition to being able to achieve the function and effect of any one of claims 1 to 4, the mounting screw member main body and the cylindrical nut are screwed together. Since the mounting screw member is configured, the entire length of the mounting screw member can be adjusted within the length of the screwing allowance between the mounting screw member main body and the cylindrical nut. As a result, the mounting screw member can be adjusted to an appropriate length according to the depth of the buried hole without cutting or cutting parts (wood rod body, mounting screw member, etc.). It becomes easy to reduce the labor for forming the wooden rod-like body. In addition, it is possible to share the mounting screw member with another wooden rod-like body having a different buried hole depth, thereby reducing the member cost.
[0015]
In addition, as mentioned above, although the code | symbol was written in order to make contrast with drawing convenient, this invention is not limited to the structure of an accompanying drawing by this entry.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the parts indicated by the same reference numerals as those in the conventional example indicate the same or corresponding parts.
[0017]
FIG. 1 shows a log beam 1A, which is an example of the wood rod-like body 1 of the present invention. The log beam 1A has a fitting (corresponding to an attachment target part) fixed to a housing at each of both ends thereof. 2 is bolted.
[0018]
As shown in FIGS. 2 to 4, the log beam 1A is provided with a beam body (corresponding to a wooden rod body) 3 having a contact attachment portion 3A to the fitting 2 at its end, and is provided at the tip. A clamping bolt (corresponding to a clamping screw member) 4 is screwed together, and the joint body 2 is sandwiched by a cooperative action with the joint fitting 2 to fix the beam body 3 to the joint fitting 2 freely. A simple mounting screw member 5 is embedded in a bolt hole (corresponding to a buried hole) 6 of the contact mounting portion 3A.
The beam main body 3 is made of a log material, and as described above, four bolt holes 6 are provided so as to open to the end surface of the beam main body 3. Four nut arrangement holes 7 that open to the side surfaces of the beam body 3 and communicate with the bottom portions of the bolt holes 6 are also provided. Further, a screwing hole 12 for a fixing bolt 11 to be described later is also provided in a state opened on the side surface of the beam body 3.
[0019]
As shown in FIGS. 4 and 5, the bolt holes 6 are different in depth from two of the four, and accordingly, the nut arrangement holes 7 are also two from the beam end. The installation position dimensions are different. Thereby, the defect | deletion of the log cross section in the nut arrangement | positioning hole 7 part can be disperse | distributed without concentrating on one cross section, and there exists an effect which suppresses the strength reduction of a beam main body.
Incidentally, the four bolt holes 6 are provided so as to be along the beam axis, and the bolt holes 6 arranged at point-symmetric positions with respect to the center of the circle in the cross section of the log have the same length. It is formed.
On the other hand, the nut arrangement hole 7 is literally dimensioned so that a nut member (corresponding to the enlarged diameter portion K, in this embodiment, a square nut) 5a, which is one component of the mounting screw member 5, can be fitted and arranged. It is composed of square holes. Further, the nut arrangement hole 7 is formed so that the nut shaft core coincides with the axial center of the bolt hole 6 by fitting the nut member 5 a to the bottom of the nut arrangement hole 7. The inserted nut member 5a is placed in a state in which rotation around the nut axis is prevented by the outer peripheral surface coming into contact with the corresponding inner peripheral surface of the nut arrangement hole 7.
[0020]
The mounting screw member 5 includes a screw main body (corresponding to the mounting screw member main body) 5b having a male screw formed on the outer peripheral portion, the nut member 5a that can be screwed to the screw main body 5b, and the screw main body 5b. A cylindrical nut 5c that can be screwed together is provided.
As shown in FIG. 4, the screw main body 5b is constituted by a male screw member in which screw grooves are formed in a predetermined range at both ends.
The nut member 5a is formed of a square nut as described above, and is arranged in a screwed state with the male screw portion at the base end portion of the screw body 5b (see FIG. 5).
The cylindrical nut 5c is formed so as to be able to be screwed to the screw main body 5b and the clamping bolt 4, and is arranged in a screwed state with a male screw portion at a tip portion of the screw main body 5b. In addition, a jig fitting groove (corresponding to an insertion / extraction operation portion) 8 that can be freely rotated around the nut shaft core by fitting a jig such as a screwdriver is formed on the end surface portion of the cylindrical nut 5c. (See Figures 3 and 4).
An example of the procedure for embedding the screw member 5 for attachment to the beam main body 3 is that the cylindrical nut 5c is fitted and tightened to the screw end of the male screw portion at the tip of the screw main body 5b in advance. The nut member 5a is fitted and arranged in the arrangement hole 7, and the screw main body 5b is inserted into the bolt hole 6 from the base end portion and screwed into the nut member 5a (see FIG. )reference). This screwing operation can be performed by fitting a jig such as a screwdriver in the jig fitting groove 8.
In addition, the mounting screw member 5 embedded in the abutting mounting portion 3A of the beam body 3 has a tip portion that is flush with the surface of the abutting mounting portion 3A or enters the bolt hole 6. It is arranged in. Accordingly, there is nothing protruding from the end face of the abutting mounting portion 3A, and it is possible to prevent interference with other objects, and the log beam 1A is easy to handle and the log beam 1A to the fitting 2 is provided. It is possible to expect the same action during the mounting operation, and it is possible to mount the beam efficiently.
[0021]
The metal fitting 2 will be described. As shown in FIGS. 2, 3, and 4, the hardware main body 2a is fixed to the housing, and the end surface of the beam main body 3 is attached to the hardware main body 2a in a contact state. While providing the flange part 2b, the mounting part 2c which receives the contact attachment part 3A of the beam main body 3 from the downward direction is provided.
In the flange portion 2 b, first bolt insertion holes 9 are formed at positions corresponding to the bolt holes 6 of the beam body 3.
The mounting portion 2c is provided with a second bolt insertion hole 10 so that the beam main body 3 placed on the mounting portion 2c can be fixed with a fixing bolt 11. .
By providing the mounting portion 2c, when attaching the log beam 1A to the fitting 2, the log beam 1A can be worked in a temporarily placed state, and the beam attaching operation can be efficiently performed. It becomes possible. Furthermore, by fixing the beam body 3 with the placement portion 2c, it becomes possible to enhance the shear resistance of the beam.
[0022]
Next, a procedure for attaching the log beam 1A to the fitting 2 will be described.
[1] The beam main body 3 in which the mounting screw member 5 is embedded in advance is placed on the placement portion 2c of the fitting 2 (see FIG. 4 (a)).
[2] Through the first bolt insertion hole 9 of the fitting 2, the clamping bolt 4 is screwed into the mounting screw member 5 and tightened. More specifically, the abutting mounting portion 3A and the flange portion 2b are obtained by the cooperative action of the nut member 5a and the clamping bolt 4 with the enlarged diameter head by screwing and tightening the clamping bolt 4 to the cylindrical nut 5c. And the log beam 1A is fixed to the fitting 2 (see FIG. 4B).
[3] The fixing bolt 11 is inserted into the second bolt insertion hole 10 of the placement portion 2c, and is screwed into the screwing hole 12 and tightened.
[4] The gap around the nut member 5a arranged in the nut arrangement hole 7 is filled with the filler 13 made of epoxy resin so that a cross-sectional defect does not occur in the log beam 1A.
[0023]
According to the log beam of the present embodiment, it is possible to eliminate excessive protrusions at both ends of the beam main body 3 and to efficiently and surely arrange the bolts. Since it is only necessary to screw the short clamping bolt 4 to the tip of the screw member 5, even if there is no large mounting space on the fitting 2 side, it can be easily and reliably installed and attached. Become.
Further, since the nut member 5a is embedded in a state in which rotation around the nut axis is prevented with respect to the beam body 3, the nut member 5a is rotated together during the rotation operation of the screw body 5b and the clamping bolt 4. In addition to preventing this, the size of the nut arrangement hole 7 can be set to the minimum required size because it is not necessary to use a nut detent or the like, and the screw member can be rotated more efficiently. In addition, it is possible to reduce the cross-sectional defect of the log beam 1A, and it is possible to efficiently form a high-strength beam connecting portion.
[0024]
[Another embodiment]
Other embodiments will be described below.
[0025]
<1> The wooden rod-like body 1 is not limited to the log beam described in the previous embodiment, and may be, for example, a square bar made of wood or laminated wood, and further, a member other than the beam, for example, a pillar It may be a brace, bracing, or a wooden truss structure material, which are collectively referred to as a wooden rod.
<2> The mounting screw member is limited to the configuration including the nut member (corresponding to the enlarged diameter portion K) 5a, the screw main body (corresponding to the mounting screw member main body) 5b, and the cylindrical nut 5c described in the previous embodiment. For example, as shown in FIG. 6, instead of the nut member 5a, a hook-shaped portion (corresponding to the enlarged diameter portion K) 14 formed integrally is provided on a part of the screw body 5b. May be. In this case, as shown in the figure, the embedded hole 6 needs to be formed so that a mounting screw member can be fitted from the side of the wooden rod 1.
Moreover, as shown in FIG. 7, the screw main body 5b and the cylindrical nut 5c may be integrally formed by joining means such as welding or adhesion.
Moreover, as shown in FIG. 8, the structure which consists of the nut member 5a and the screw main body 5b may be sufficient. In this case, if the jig fitting groove (corresponding to the insertion / extraction operation portion) 8 is formed on the end surface portion of the screw body 5b, the screw body 5b can be efficiently installed in the bolt hole 6. . In the case of this embodiment, as shown in FIG. 8 (a), the clamping screw member 4 is constituted by a cylindrical nut (with an enlarged diameter head) 15 that is screwed into the screw body 5b. As shown in FIG. 8 (b), after the wood rod-like body 1 is arranged at a predetermined position of the attachment target portion 2, the nut body 16b is twisted out from the attachment target portion 2 side and screwed to the tip portion thereof. It may be configured. In the case of the embodiment product shown in FIG. 8B, the bolt hole 6 is formed to a depth equal to or greater than the length of the screw body 5b.
Therefore, the expanded diameter portion, the mounting screw member main body, and the clamping screw member can adopt various forms. Of course, the nut 16 is not limited to a square nut member, and various nuts such as a hexagonal nut and an octagonal nut can be used.
[Brief description of the drawings]
FIG. 1 is a side view showing a mounting state of a log beam. FIG. 2 is a perspective view of a main part showing a mounting state of the log beam. FIG. 3 is an exploded perspective view of a main part showing a mounting state of the log beam. FIG. 5 is a cross-sectional view of a log beam. FIG. 6 is a partially cutaway explanatory view of a main part showing a wood rod-like body of another embodiment. FIG. 7 is a wood rod-like body of another embodiment. FIG. 8 is a partially cutaway explanatory view of the main part showing the wood rod-like body of another embodiment. FIG. 9 is a partially cutaway explanatory view of the main part showing the conventional wood rod-like body. Missing explanatory drawing [Explanation of symbols]
2 Attachment target part 3 Wood rod body 3A Contact attachment part 4 Nipping screw member 5 Attachment screw member 5a Nut member 5b Attachment screw member body 5c Cylindrical nut 6 Buried hole 8 Insertion / extraction operation part K Expanding part

Claims

By providing a wood rod body with an abutment attachment part at the end to the attachment target part to be attached, and by screwing another clamping screw member to the tip part, by a cooperative action with the abutment attachment part An attachment screw member that can fix the wooden rod body to the attachment object portion by sandwiching the attachment object portion is embedded in an embedding hole of the abutting attachment portion, and the attachment screw member is attached to the attachment object portion. It is a wooden rod-like body provided with an enlarged diameter part that can secure a clamping reaction force against,
The mounting screw member embedded in the abutting mounting portion is a wooden rod-like body arranged such that a tip portion thereof is flush with the surface of the abutting mounting portion or enters the embedded hole.

By providing a wood rod body with an abutment attachment part at the end to the attachment target part to be attached, and by screwing another clamping screw member to the tip part, by a cooperative action with the abutment attachment part An attachment screw member that can fix the wooden rod body to the attachment object portion by sandwiching the attachment object portion is embedded in an embedding hole of the abutting attachment portion, and the attachment screw member is attached to the attachment object portion. It is a wooden rod-like body provided with an enlarged diameter part that can secure a clamping reaction force against,
The said enlarged diameter part is comprised with the nut member which can be screwed together to the screw member main body for attachment, and the said nut member is embed | buried in the state from which rotation around the nut axis center was prevented with respect to the wooden rod-shaped main body. In addition, the mounting screw member is provided on the wooden rod body so as to be able to receive the force in the pushing direction into the embedded hole acting on the screw member main body for screwing and the force in the pulling direction. A wood rod-like body in which an insertion / extraction operation section that can be freely inserted into and removed from the embedded hole is provided in the mounting screw member, and the embedded hole is formed to a depth greater than the length of the mounting screw member.

2. The wood rod-like body according to claim 1, wherein the enlarged-diameter portion is formed of a nut member that can be screwed into a mounting screw member main body.

The nut member is embedded in a state in which rotation around the nut axis is prevented with respect to the wood rod body, and the nut member in the direction of pushing into the embedded hole acting on the screw member body for mounting is screwed An attachment / extraction operation part is provided in the attachment screw member, which is provided in the wood rod body body so as to be able to receive force and force in the extraction direction, and the attachment screw member can be inserted into and removed from the embedded hole. Item 4. A wood rod according to Item 3.

The said mounting screw member is comprised by screwing the cylindrical nut which equipped the front-end | tip part of the said mounting screw member main body with the internal thread part in the inner peripheral part. The wooden rod described.