JP4053923B2

JP4053923B2 - Structure joint device

Info

Publication number: JP4053923B2
Application number: JP2003114664A
Authority: JP
Inventors: 哲也中村; 章堀本
Original assignee: Sakura Rubber Co Ltd
Current assignee: Sakura Rubber Co Ltd
Priority date: 2003-04-18
Filing date: 2003-04-18
Publication date: 2008-02-27
Anticipated expiration: 2023-04-18
Also published as: JP2004316346A

Description

【０００１】
【発明の属する技術分野】
この発明は、相互に独立している構造体を連結する１対の継手を備えた、構造体の継手装置に関係している。
【０００２】
【従来の技術】
相互に独立している複数の構造体を相互に連結して大きな構造物を組み立てることは良く知られている。
【０００３】
このような構造物としては例えばトラス構造物が良く知られている。従来トラス構造物は、相互に独立している複数の構造体が溶接或いはボルト等の固定部材を利用した継手装置より相互に連結されて組み立てられる。
【０００４】
例えば、清水建設研究報告（ＶＯＬ．６５，１９９７．４）には、複数のトラス構造体をボルトを利用して相互に連結する為の継手装置が開示されている。
【０００５】
この従来の継手装置は、図７の（Ａ）中に示されている如く、ＣＦＲＰ（Carbon Fiber Reinforced Plastic）製の管状トラス構造体１０の所定の位置である両端に例えば図示しないリベットを介して取り付けられたステンレス鋼製のノーズコーン１２を備えている。ノーズコーン１２は裁頭円錐台形状をしており、ノーズコーン１２には管状トラス構造体１０の内部孔側から高張力鋼製のボルト１４が螺合されている。ボルト１４の軸部においてノーズコーン１２から突出した部分には、アルミニウム合金製のカラー１６が被せられている。ボルト１４の軸部の上記部分に固定ピン１４ａが植設されていて、カラー１６の内周面にはボルト１４の軸部の延出方向に延出している縦溝１６ａが形成されている。そして、ボルト１４の軸部の固定ピン１４ａがカラー１６の内周面の縦溝１６ａ中に突出している。
【０００６】
上記従来の継手装置は、さらに、球状のノード部材１８を備えている。ノード部材１８の外周面の所定の位置には螺子孔１８ａが形成されているとともに、螺子孔１８ａの入り口に凹所１８ｂが形成されている。
【０００７】
そして、ボルト１４の軸部の先端をノード部材１８の外周面の所定の位置の螺子孔１８ａの入口に位置合わせした後にカラー１６を所定の方向に回転させることによりカラー１６と共にボルト１４も上記所定の方向に回転し、螺子孔１８ａにボルト１４の軸部が螺合される。この螺合はボルト１４の軸部の固定ピン１４ａが螺子孔１８ａの入り口の凹所１８ｂ中に収容されるまで続く。固定ピン１４ａが凹所１８ｂ中に収容されてしまうと、カラー１６によりボルト１４を回転させられなくなる。
【０００８】
このようにして組み立てられた従来の継手装置では、管状トラス構造体１０とノード部材１８との間に負荷された圧縮力はカラー１６により主に支持され、また管状トラス構造体１０とノード部材１８との間に負荷された引っ張り力はボルト１４により主に支持される。
【０００９】
外周面上の１つの最大径仮想円上に相互に等間隔に４つの螺子孔を形成したノード部材１８’を準備しておけば、このような１つのノード部材１８’に対し、図７の（Ｂ）中に示されている如く、４本の管状トラス構造体１０の夫々の一端部を連結することが出来る。
【００１０】
また、外周面上の所望の２つの位置に螺子孔を形成したノード部材１８’’を準備しておけば、このような１つのノード部材１８’’に対し、図７の（Ｃ）中に示されている如く、２本の管状トラス構造体１０の夫々の一端部を連結することが出来る。
【００１１】
【特許文献】
清水建設研究報告（ＶＯＬ．６５，１９９７．４）
【００１２】
【発明が解決しようとする課題】
構造物が大きくなるに従い相互に連結しなければならない構造体の数も必然的に多くなり、構造物の組み立て作業が大変になる。
【００１３】
しかも、上述した如く構成されている従来の継手装置では、ノード部材１８の外周面の所定の位置の螺子孔１８ａの入口に管状トラス構造体１０の一端のボルト１４の軸部の先端を位置合わせする作業が大変であるし、螺子孔１８ａに対するボルト１４の軸部の所望の螺合を達成する為にカラー１６を所定の方向に回転させる作業も大変であるし、さらには、上記所望の螺合が達成された後には、上記所望の螺合を解除することが出来ない。
【００１４】
上述した如く構成されている従来の継手装置を使用した構造物の組み立て作業のこのような煩雑さは、水上に浮かぶ物体上や水中や宇宙空間等の安定しない環境状況中で上記組み立て作業を行なう場合に、さらに悪化する。
【００１５】
しかも、上述した如く構成されている従来の継手装置では、寸法精度を厳しく管理しなければ上記組み立て作業が困難になるし、構造体や継手装置の構成部材が温度膨張や温度収縮するような高温や低温の外部環境に長期間さらされる環境下における上記組み立て作業はさらに困難になる。
【００１６】
さらに、組み立て作業終了後でも、このような環境下では、構造体や継手装置の構成部材の温度膨張や温度収縮に起因して継手装置に大きな歪みが生じ、継手装置に疲労破壊を生じさせる原因ともなりかねない。
【００１７】
この発明は上記事情の下で成され、この発明の目的は、構成が簡単で、水上に浮かぶ物体上や水中や宇宙空間等の安定しない環境状況中はもちろんのこと高温や低温の外部環境に長期間さらされても構造物の組み立て作業が容易であるとともに分解作業も容易であり、さらには、温度膨張や温度収縮に起因する大きな歪みや応力を生じさせることがない、構造体の継手装置を提供することである。
【００１８】
【課題を解決するための手段】
上述したこの発明の目的を達成する為に、この発明に従った構造体の継手装置は、相互に独立している構造体に取り付けられ、相互に着脱可能に結合されることにより相互に独立している構造体を連結する１対の継手を備えていて、
１対の継手の夫々が、
筒形状の継手本体と、
継手本体の先端部に設けられ、筒形状の周方向に所定間隔に離間した複数の位置から筒形状の中心線に沿い突出する複数の係合突部と、
複数の係合突部の夫々の突出端部において上記周方向における所定の一方に向い突出した係止駒部と、
を含んでいる。
【００１９】
そして、１対の継手は、一方の継手の継手本体の複数の係合突部を他方の継手の継手本体の複数の係合突部の間の複数の係合凹所中に挿入した後に一方の継手の継手本体を他方の継手の継手本体に対し上記周方向における所定の一方に向い相対的に回転させることにより、一方の継手の複数の係合突部の複数の係止駒部を他方の継手の複数の係合突部の複数の係止駒部に対し上記中心線に沿った方向で相互に離間する方向に係止させ、
１対の継手の少なくとも一方は、対応する構造体の所定の位置に対し継手本体の上記中心線を所望の方向に向けられるよう連結する連結方向可変機構をさらに備えている。
【００２０】
【発明の実施の形態】
以下、この発明の種々の実施の形態や変形例を添付の図面中の図１乃至図６を参照しながら詳細に説明する。
【００２１】
［第１の実施の形態］
まず最初に、図１の（Ａ）及び（Ｂ），そして図２を参照しながら、この発明の第１の実施の形態に従った構造体の継手装置を詳細に説明する。なおここにおいて：図１の（Ａ）は、第１の実施の形態に従った構造体の継手装置の１対の継手の一方の概略的な縦断面図であり；図１の（Ｂ）は、図１の（Ａ）の一方の継手の概略的な正面図であり；そして図２は、第１の実施の形態に従った構造体の継手装置の１対の継手が相互に連結されているとともに上記１対の継手の夫々の連結方向可変機構が機能している状況を概略的に示す半縦断面図である。
【００２２】
この発明の第１の実施の形態に従った構造体の継手装置は、相互に独立している構造体２０ａ，２０ｂに取り付けられ、相互に着脱可能に結合されることにより相互に独立している構造体２０ａ，２０ｂを連結する１対の継手２２ａ，２２ｂを備えている。この実施の形態において、１対の継手２２ａ，２２ｂは相互に同じ構造を有しているので、図１の（Ａ）及び（Ｂ）には一方の継手２２ａしか示されていない。
【００２３】
この実施の形態において、一方の継手２２ａが取り付けられている構造体２０ａは管状のトラス構造体であり、例えばＣＦＲＰ（Carbon Fiber Reinforced Plastic）により形成されているが、別の形状の構造体であることが出来るし、材料も種々の金属や種々の合成樹脂やこれらの組み合わせを含む種々の材料であることができる。一方の継手２２ａは対応する構造体２０ａを構成している管状のトラス構造体の所定位置として管状のトラス構造体の一端にのみ取り付けられていて良いし、管状のトラス構造体の両端に取り付けられていて良い。
【００２４】
この実施の形態において、他方の継手２２ｂが取り付けられている構造体２０ｂはノード（結束点）部材であり、ノード（結束点）部材の外周面上の所定の位置に取り付けられている。
【００２５】
１対の継手２２ａ，２２ｂの夫々は、筒形状の継手本体２４を備えている。継手本体２４も構造体２０ａと同様に種々の任意の材料により形成されていることができる。この実施の形態において上記筒形状は円筒形状である。
【００２６】
継手本体２４の先端部には、筒形状の周方向に所定間隔に離間した複数の位置から筒形状の中心線Ｃに沿い突出する複数の係合突部２６が設けられている。
【００２７】
複数の係合突部２６の夫々の突出端部からは上記周方向における所定の一方に向い係止駒部２８が突出されている。
【００２８】
図２中に示されている如く、１対の継手２２ａ，２２ｂは、一方の継手２２ａの継手本体２４の複数の係合突部２６を他方の継手２２ｂの継手本体２４の複数の係合突部２６の間の複数の係合凹所２９中に挿入した後に一方の継手２２ａの継手本体２４を他方の継手２２ｂの継手本体２４に対し上記周方向における所定の一方に向い相対的に回転させることにより、一方の継手２２ａの複数の係合突部２６の複数の係止駒部２８を他方の継手２２ｂの複数の係合突部２６の複数の係止駒部２８に対し上記中心線Ｃに沿った方向で相互に離間する方向に係止させることが出来る。
【００２９】
この実施の形態において、１対の継手２２ａ，２２ｂの夫々の継手本体２４の複数の係合突部２６の複数の係止駒部２８において、一方の継手２２ａの継手本体２４の複数の係合突部２６の複数の係止駒部２８が他方の継手２２ｂの継手本体２４の複数の係合突部２６の複数の係止駒部２８に係止された時に相互に接触する係止面２８ａが、上記中心線Ｃに対して直交する仮想面αから上記係止面２８ａが対応する係合突部２６における上記突出端部に向い傾斜されている、
上記傾斜の角度θは、１対の継手２２ａ，２２ｂの夫々の継手本体２４の複数の係合突部２６の複数の係止駒部２８の係止面２８ａが上述した如く相互に係止されている間に１対の継手２２ａ，２２ｂが上記中心線Ｃに沿い相互に分離される方向に引っ張られても、夫々の係止面２８ａ上に作用する摩擦力により上記係止が安定して保たれる値に設定されていて、上記値は例えば１度乃至２度の範囲である。
【００３０】
上述したような傾斜角度は、上述したような係止が達成された後に１対の継手２２ａ，２２ｂに対し夫々の中心線Ｃに沿った方向に圧縮力や引っ張り力が負荷されている間に１対の継手２２ａ，２２ｂが夫々の中心線Ｃに沿った方向に相対的に実質的に移動することがないように１対の継手２２ａ，２２ｂの夫々の複数の係合突部２６や複数の係止駒部２８の夫々の外形寸法を設定した場合でも、上述したような係止作業を容易とするともに、上述したような係止を解除する作業も容易とし、さらには上述したような係止が達成された後には上述したような係止が確実に保持されることを保証する。
【００３１】
筒形状の継手本体２４は、上記中心線Ｃに沿った方向で、複数の係合突部２６が突出しているのとは反対側の端部に内方フランジ２４ａを有している。
【００３２】
１対の継手２２ａ，２２ｂの夫々は、対応する構造体２０ａ，２０ｂの所定の位置に対し継手本体２４の上記中心線を所望の方向に向けられるよう連結する連結方向可変機構３０をさらに備えている。
【００３３】
連結方向可変機構３０は、夫々の継手２２ａ又は２２ｂの継手本体２４が対応する構造体２０ａ又は２０ｂの所定の位置に固定された少なくとも球面の一部３２ａを有した球状支持部３２と、球状支持部３２の上記少なくとも球面の一部３２ａを保持し上記少なくとも球面の一部３２ａ上で摺動可能であるとともに夫々の継手２２ａ又は２２ｂの継手本体２４に対し接続された球面保持部３４と、を含んでいる。
【００３４】
この実施の形態においては、球面保持部３４が継手本体２４の内孔中で継手本体２４に接続されている。また、球面保持部３４により球状支持部３２の少なくとも球面の一部３２ａを上述したような摺動可能に保持させるには、球面保持部３４に球状支持部３２の少なくとも球面の一部３２ａと実質的に同じ径の少なくとも球面の一部により構成された球状支持凹所３４ａを形成する必要がある。このような球面保持部３４の球状支持凹所３４ａ中への球状支持部３２の少なくとも球面の一部３２ａの組み込みを容易にする為に、この実施の形態において球面保持部３４は、継手本体２４の中心線Ｃに対して平行な分割面により２分割される２つのブロックにより構成されている。球面保持部３４の２つのブロックは、継手本体２４の内孔の外側で相互に分離された後に球状支持部３２の少なくとも球面の一部３２ａを球状支持凹所３４ａにより包むよう球状支持部３２の少なくとも球面の一部３２ａ上に被せられ、次にこのような状態のまま図１の（Ａ）や（Ｂ）中に示されている如く継手本体２４の内孔中に挿入され上記内孔中に保持される。上記内孔による球面保持部３４の保持は、上記内孔の内周面と球面保持部３４の外周面との間に生じる摩擦力のみにより行なわれても良いが、接着剤や固定螺子等の公知の固定手段により強固にすることが出来る。
【００３５】
なお、球面保持部３４は、継手本体２４の中心線Ｃに対して平行な複数の分割面により複数に分割される複数のブロックにより構成されていることも出来る。
【００３６】
この実施の形態の継手装置の１対の継手２２ａ，２２ｂの組み合わせでは、図２中に示されている如く、一方の継手２２ａの継手本体２４の中心線Ｃが他方の継手２２ｂが取り付けられている他方の構造体２０ｂの所定の位置の垂線Ｖに対し傾斜していても、他方の継手２２ａの継手本体２４の中心線Ｃが一方の継手２２ａの継手本体２４の中心線Ｃに合致するよう他方の継手２２ａの継手本体２４を連結方向可変機構３０により他方の継手２２ａの継手本体２４の中心線Ｃを他方の構造体２０ｂの所定の位置の垂線Ｖに対し傾斜させることにより、１対の継手２２ａ，２２ｂを相互に連結する、即ち一方の構造体２０ａと他方の構造体２０ｂとを相互に連結する、ことができる。また、熱膨張や熱収縮あるいは部材製造上の寸法公差や組み立て時の寸法公差のお蔭で一方の構造体２０ａや他方の構造体２０ｂの外形寸法、特に中心線Ｃや垂線Ｖに沿った方向における長さ、が大きく変化しても、このような変化は継手本体２４の内孔中で球面保持部３４が中心線Ｃや垂線Ｖに沿った方向に移動することにより、１対の継手２２ａ，２２ｂを相互に適切に連結させることが可能になっている。従って、上記内孔中による球面保持部３４の保持を上述したように接着剤や固定螺子等の公知の固定手段により強固にする場合には、固定手段の使用は１対の継手２２ａ，２２ｂの相互な適切な連結が終了した後に行なうことが好ましい。
【００３７】
さらに、構造体２０ａ，２０ｂが構成要素となっている構造物全体に熱が加わり、構造物が不均一に温度上昇し構造物全体が歪んでしまうことがある。このような場合、構造体２０ａ，２０ｂの相対的な角度関係が当初組み立てられた時や、常温時とはずれたずれた方向に力が加わることがある。これは熱膨張による構造体の歪みや熱応力として広く知られている現象であり、この時に構造体の結合部や部材に加わる応力は特別な設計上の配慮がなされている場合を除き一般に非常に大きくなってしまう。
【００３８】
しかし、このような場合でも、継手本体２４の内孔中で球面保持部３４と球面支持部３２が相対的に摺動することにより、上記構造体の温度上昇による歪みを吸収して、構造体２０ａや構造体２０ｂに大きな応力が加わることがない。
【００３９】
またこの実施の形態では、一方の継手２２ａが取り付けられる一方の構造体２０ａと他方の継手２２ｂが取り付けられる他方の構造体２０ｂとは相互に独立しているのみならず相互に異なる構成を有しているが、相互に同じ構成、例えば他方の継手２２ｂが一方の構造体２０ａと同じ管状のトラス部材、であっても良い。
【００４０】
［第２の実施の形態］
次に、図３の（Ａ）及び（Ｂ），図４，そして図５を参照しながら、この発明の第２の実施の形態に従った構造体の継手装置を詳細に説明する。なおここにおいて：図３の（Ａ）は、第２の実施の形態に従った構造体の継手装置の１対の継手の一方の概略的な縦断面図であり；図３の（Ｂ）は、図３の（Ａ）の一方の継手の概略的な正面図であり；図４は、第２の実施の形態に従った構造体の継手装置の１対の継手が相互に連結されているとともに上記１対の継手の夫々の連結方向可変機構が機能している状況を概略的に示す側面図であり；そして、図５は、図４と同じ状況における第２の実施の形態に従った構造体の継手装置の１対の継手の概略的な縦断面図である。
【００４１】
この発明の第２の実施の形態に従った構造体の継手装置もまた、図１の（Ａ）及び（Ｂ）そして図２を参照したこの発明の第１の実施の形態に従った構造体の継手装置と同様に、相互に独立している構造体４０ａ，４０ｂに取り付けられ、相互に着脱可能に結合されることにより相互に独立している構造体４０ａ，４０ｂを連結する１対の継手４２ａ，４２ｂを備えている。この実施の形態において、１対の継手４２ａ，４２ｂは相互に同じ構造を有しているので、図３の（Ａ）及び（Ｂ）には一方の継手４２ａしか示されていない。
【００４２】
この実施の形態において、一方の継手４２ａが取り付けられている構造体４０ａは管状のトラス構造体であり、例えばＣＦＲＰ（Carbon Fiber Reinforced Plastic）により形成されているが、別の形状の構造体であることが出来るし、材料も種々の金属や種々の合成樹脂やこれらの組み合わせを含む種々の材料であることができる。一方の継手４２ａは対応する構造体４０ａを構成している管状のトラス構造体の所定位置として管状のトラス構造体の一端にのみ取り付けられていて良いし、管状のトラス構造体の両端に取り付けられていて良い。
【００４３】
この実施の形態において、他方の継手４２ｂが取り付けられている構造体４０ｂはノード（結束点）部材であり、ノード（結束点）部材の外周面上の所定の位置に取り付けられている。
【００４４】
１対の継手４２ａ，４２ｂの夫々は、筒形状の継手本体４４を備えている。継手本体４４も構造体４０ａと同様に種々の任意の材料により形成されていることができる。この実施の形態において上記筒形状は円筒形状である。
【００４５】
継手本体４４の先端部には、筒形状の周方向に所定間隔に離間した複数の位置から筒形状の中心線Ｃに沿い突出する複数の係合突部４６が設けられている。
【００４６】
複数の係合突部４６の夫々の突出端部からは上記周方向における所定の一方に向い係止駒部４８が突出されている。
【００４７】
図４及び図５中に示されている如く、１対の継手４２ａ，４２ｂは、一方の継手４２ａの継手本体４４の複数の係合突部４６を他方の継手４２ｂの継手本体４４の複数の係合突部４６の間の複数の係合凹所４９中に挿入した後に一方の継手４２ａの継手本体４４を他方の継手４２ｂの継手本体４４に対し上記周方向における所定の一方に向い相対的に回転させることにより、一方の継手４２ａの複数の係合突部４６の複数の係止駒部４８を他方の継手４２ｂの複数の係合突部４６の複数の係止駒部４８に対し上記中心線Ｃに沿った方向で相互に離間する方向に係止させることが出来る。
【００４８】
この実施の形態において、１対の継手４２ａ，４２ｂの夫々の継手本体４４の複数の係合突部４６の複数の係止駒部４８において、一方の継手４２ａの継手本体４４の複数の係合突部４６の複数の係止駒部４８が他方の継手４２ｂの継手本体４４の複数の係合突部４６の複数の係止駒部４８に係止された時に相互に接触する係止面４８ａが、上記中心線Ｃに対して直交する仮想面αから上記係止面４８ａが対応する係合突部４６における上記突出端部に向い傾斜されている、
上記傾斜の角度θは、１対の継手４２ａ，４２ｂの夫々の継手本体４４の複数の係合突部４６の複数の係止駒部４８の係止面４８ａが上述した如く相互に係止されている間に１対の継手４２ａ，４２ｂが上記中心線Ｃに沿い相互に分離される方向に引っ張られても、夫々の係止面４８ａ上に作用する摩擦力により上記係止が安定して保たれる値に設定されていて、上記値は例えば１度乃至２度の範囲である。
【００４９】
上述したような傾斜角度は、上述したような係止が達成された後に１対の継手４２ａ，４２ｂに対し夫々の中心線Ｃに沿った方向に圧縮力や引っ張り力が負荷されている間に１対の継手４２ａ，４２ｂが夫々の中心線Ｃに沿った方向に相対的に実質的に移動することがないように１対の継手４２ａ，４２ｂの夫々の複数の係合突部４６や複数の係止駒部４８の夫々の外形寸法を設定した場合でも、上述したような係止作業を容易とするともに、上述したような係止を解除する作業も容易とし、さらには上述したような係止が達成された後には上述したような係止が確実に保持されることを保証する。
【００５０】
筒形状の継手本体４４は、上記中心線Ｃに沿った方向で、複数の係合突部４６が突出しているのとは反対側の端部に内方フランジ４４ａを有している。
【００５１】
以上詳述したことから明らかなように、継手本体４４，複数の係合突部４６，複数の係止駒部４８，そして係止面４８ａを含めた第２の実施の形態に従った１対の継手４２ａ，４２ｂの構成は、前述した継手本体２４，複数の係合突部２６，複数の係止駒部２８，そして係止面２８ａを含めた第１の実施の形態に従った１対の継手２２ａ，２２ｂの構成と同じである。
【００５２】
第２の実施の形態が前述した第１の実施の形態と異なっているのは、１対の継手４２ａ，４２ｂの夫々がさらに備えている、対応する構造体４０ａ，４０ｂの所定の位置に対し継手本体４４の上記中心線を所望の方向に向けられるよう連結する連結方向可変機構５０の構成である。
【００５３】
連結方向可変機構５０は、夫々の継手４２ａ，４２ｂの継手本体４４が対応する構造体４０ａ又は４０ｂの所定の位置に固定され、対応する継手４２ａ又は４２ｂの継手本体４４の内孔中に突入した突入部５２と、突入部５２に固定された拡大径部５４と、を含んでいる。
【００５４】
連結方向可変機構５０はさらに、上記内孔中で拡大径部５４に対し突入部５２の突入端とは反対側において中心線Ｃの周りに環状に延出しているとともに上記内孔の中心線Ｃに沿った方向に相互に重複して設けられている少なくとも２枚の厚さ変化ワッシャ５６ａ，５６ｂを含んでいるとともに、上記内孔中で拡大径部５４に対し突入部５２の突入端側に設けられ拡大径部５４の上記突入端側の端面に当接し上記内孔の半径方向への拡大径部５４の移動を可能にしている半径方向移動案内部５８と、を含んでいる。
【００５５】
上記少なくとも２枚の厚さ変化ワッシャ５６ａ，５６ｂの夫々は、夫々の中心線に沿った方向における両端面の一方５７ａが上記夫々の中心線に対して直交する方向に延出しており、また、上記両端面の他方５７ｂが上記夫々の中心線に対して斜めに交差する方向に延出している。
【００５６】
半径方向移動案内部５８において拡大径部５４の突入端側の端面が当接する表面５８ａは、突入部５２の突出方向に凹んだ凹面形状を有している。
【００５７】
上記内孔中で拡大径部５４が，上記内孔の中心線Ｃに沿った方向で少なくとも２枚の厚さ変化ワッシャ５６ａ，５６ｂと半径方向移動案内部５８とにより挟持されている。上記少なくとも２枚の厚さ変化ワッシャ５６ａ，５６ｂの一方を他方に対し周方向に相対的に移動させることにより拡大径部５４の突入端側の端面上で半径方向移動案内部５８が上記内孔の半径方向において移動し、突入部５２の突出端に対し対応する継手４２ａ又は４２ｂの継手本体４４が上記内孔の半径方向に移動することが出来る。このことは、径方向移動案内部５８を保持している継手本体４４がその中心線Ｃを突入部５２の突出端に対して、即ち、対応する構造体２０ａ又は２０ｂの上記所定の位置の垂線Ｖに対し傾斜させるよう、傾くことを意味している。
【００５８】
なお２枚の厚さ変化ワッシャ５６ａ，５６ｂの一方を他方に対し周方向に相対的に移動させることは、例えば以下のようにして行なうことが出来る。継手本体４４の外周壁において２枚の厚さ変化ワッシャ５６ａ，５６ｂの一方の外周面に対応した部位に上記外周壁の周方向に向い所定の長さ延出した図示しないワッシャ操作用長溝を予め形成しておくと共に、２枚の厚さ変化ワッシャ５６ａ，５６ｂの一方の外周面に図示しない工具引っ掛け溝を予め形成しておく。そして、図示しないワッシャ操作用長溝に図示しない工具を挿入し、この図示しない工具の挿入端を２枚の厚さ変化ワッシャ５６ａ，５６ｂの一方の外周面の工具引っ掛け溝に引っ掛け、上記図示しない工具により２枚の厚さ変化ワッシャ５６ａ，５６ｂの一方を他方に対し周方向に相対的に移動させることが出来る。
【００５９】
さらに、２枚の厚さ変化ワッシャ５６ａ，５６ｂの両方を同時に周方向に移動させることにより、径方向移動案内部５８を保持している継手本体４４がその中心線Ｃを突入部５２の突出端に対して、即ち、対応する構造体２０ａ又は２０ｂの上記所定の位置の垂線Ｖに対し、傾斜させる方向を任意に設定することが出来る。
【００６０】
２枚の厚さ変化ワッシャ５６ａ，５６ｂの両方を同時に周方向に移動させることは、例えば以下のようにして行なうことが出来る。継手本体４４の外周壁において２枚の厚さ変化ワッシャ５６ａ，５６ｂの他方の外周面に対応した部位にも上記外周壁の周方向に向い所定の長さ延出した図示しないワッシャ操作用長溝を予め形成しておくと共に、２枚の厚さ変化ワッシャ５６ａ，５６ｂの他方の外周面にも図示しない工具引っ掛け溝を予め形成しておく。そして、図示しない２つのワッシャ操作用長溝に図示しない工具を挿入し、この図示しない工具の挿入端を２枚の厚さ変化ワッシャ５６ａ，５６ｂの両方の外周面の工具引っ掛け溝に引っ掛け、上記図示しない工具により２枚の厚さ変化ワッシャ５６ａ，５６ｂの両方を同時に周方向に移動させる。
【００６１】
上記内孔による２枚の厚さ変化ワッシャ５６ａ，５６ｂや半径方向移動案内部５８の保持は、上記内孔の内周面と２枚の厚さ変化ワッシャ５６ａ，５６ｂや半径方向移動案内部５８の夫々の外周面との間に生じる摩擦力のみにより行なわれても良いが、接着剤や固定螺子等の公知の固定手段により強固にすることが出来る。
【００６２】
この実施の形態の継手装置の１対の継手４２ａ，４２ｂの組み合わせでは、図４及び図５中に示されている如く、一方の継手４２ａの継手本体４４の中心線Ｃが他方の継手４２ｂが取り付けられている他方の構造体４０ｂの所定の位置の垂線Ｖに対し傾斜していても、他方の継手４２ａの継手本体４４の中心線Ｃが一方の継手４２ａの継手本体４４の中心線Ｃに合致するよう他方の継手４２ａの継手本体４４を連結方向可変機構５０により他方の継手４２ａの継手本体４４の中心線Ｃを他方の構造体４０ｂの所定の位置の垂線Ｖに対し傾斜させることにより、１対の継手４２ａ，４２ｂを相互に連結する、即ち一方の構造体４０ａと他方の構造体４０ｂとを相互に連結する、ことができる。また、熱膨張や熱収縮あるいは部材製造上の寸法公差や組み立て時の寸法公差のお蔭で一方の構造体４０ａや他方の構造体４０ｂの外形寸法、特に中心線Ｃや垂線Ｖに沿った方向における長さ、が大きく変化するが、このような変化にもかかわらず１対の継手４２ａ，４２ｂを相互に適切に連結させることを可能にするには、継手本体４４の内方フランジ４４ａと２枚の厚さ変化ワッシャ５６ａ，５６ｂとの間に熱膨張や熱収縮の非常に少ないゲル状の物資を密封した図示しない環状の袋を介在させておくか、又は半径方向移動案内部５８を熱膨張や熱収縮の非常に少ないゲル状の物資を密封した袋により構成し、上記熱膨張や熱収縮による外径寸法の変化を上記ゲル状の物質により吸収させることにより達成することができる。
【００６３】
また構造体４０ａや４０ｂが構成要素として取り付けられている構造物全体に熱が加わり、不均一に温度が上昇した場合、構造物全体が歪むことがある。この場合、構造体４０ａ，４０ｂの相対的な角度関係が組み立て当初や常温時とは変化してくることがある。
【００６４】
このような場合に、構造体４０ａや４０ｂに大きな応力や応力度や歪みを生じさせないようにする為には、構造体４０ａや４０ｂと２枚の厚さ変化ワッシャ５６ａ，５６ｂとの間に熱膨張や熱収縮の少ないゲル状の物質を密封した環状の袋や例えばシリコンゴムやフッ素樹脂ゴムといったパッキンをこれらの間に介在させても良い。或いは、厚さ変化ワッシャ５６ａ，５６ｂの代わりに、熱膨張や熱収縮の少ないゲル状の物質を密封した環状の袋や熱可塑性樹脂や例えばシリコンゴムやフッ素樹脂ゴムといった弾性を有した物質を設置することにより上記の熱による歪みを吸収することが出来る。
【００６５】
さらに、厚さ変化ワッシャ５６ａ，５６ｂを熱可塑性樹脂で構成した場合には、図示しないヒータをこれに設置し、構造体全体の不均一な温度上昇によって歪みが発生した場合にこのヒータを使用して熱可塑性樹脂を軟化させ、結果として、構造体４０ａや４０ｂの相対的な角度関係が容易に変更できるようにして、上記温度上昇に起因する歪みを吸収させることも出来る。
【００６６】
上記内孔による２枚の厚さ変化ワッシャ５６ａ，５６ｂや半径方向移動案内部５８の保持を上述したように接着剤や固定螺子等の公知の固定手段により強固にする場合には、固定手段の使用は１対の継手４２ａ，４２ｂの相互な適切な連結が終了した後に行なうことが好ましい。
【００６７】
また２枚の厚さ変化ワッシャ５６ａ，５６ｂや半径方向移動案内部５８を熱硬化性樹脂或いは光硬化性樹脂で構成した場合には、継手４２ａ，４２ｂの相互の適切な連結が終了した後にこれらの樹脂に熱或いは光りを加えて硬化させることが好ましい。
【００６８】
またこの実施の形態でも、一方の継手４２ａが取り付けられる一方の構造体４０ａと他方の継手４２ｂが取り付けられる他方の構造体４０ｂとは相互に独立しているのみならず相互に異なる構成を有しているが、相互に同じ構成、例えば他方の継手４２ｂが一方の構造体４０ａと同じ管状のトラス部材、であっても良い。
【００６９】
［変形例］
図１の（Ａ）及び（Ｂ），そして図２を参照して上述した第１の実施の形態では、１対の継手２２ａ，２２ｂの夫々が連結方向可変機構３０を備えていたが、１対の継手２２ａ，２２ｂの少なくとも一方のみが連結方向可変機構３０を備えているだけでも良い。
【００７０】
図６には、連結方向可変機構３０を備えている一方の継手２２ａと連結方向可変機構３０を備えていない他方の継手２２ｂ’が相互に連結されている状態が示されていて、他方の継手２２ｂ’は連結方向固定機構３３の固定支持部３３ａを介して対応する構造体２０ｂの所定の位置に取り付けられている。連結方向固定機構３３は、上記所定の位置の垂線Ｖに対し継手２２ｂ’を傾斜させることは出来ない。図６中では、連結方向可変機構３０を介して一方の継手２２ａに対し連結されている一方の構造体２０ａが、他方の構造体２０ｂの所定の位置の垂線Ｖに対し傾斜している状況も示されている。
【００７１】
なお、連結方向固定機構３３の固定支持部３３ａは他方の継手２２ｂ’の継手本体２４の内孔に対し内孔の周方向に回動可能であったり、内孔の中心線に沿った方向に移動可能であることも出来、これら周方向における回動や中心線に沿った方向における移動は、固定支持部３３ａと他方の継手２２ｂ’の継手本体２４とを例えば固定螺子や接着剤等の公知の固定手段を使用して任意に固定することも出来る。
【００７２】
また、図３の（Ａ）及び（Ｂ）乃至図５を参照して上述した第２の実施の形態でも、１対の継手４２ａ，４２ｂの夫々が連結方向可変機構５０を備えていたが、１対の継手４２ａ，４２ｂの少なくとも一方のみが連結方向可変機構５０を備えているだけでも良い。
【００７３】
この場合にも、１対の継手４２ａ，４２ｂの他方は連結方向固定機構の固定支持部を介して対応する構造体の所定の位置に取り付けられる。連結方向固定機構は、上記所定の位置の垂線に対し上記他方の継手を傾斜させることは出来ない。そしてこのように第２の実施の形態の１対の継手４２ａ，４２ｂの他方に適用された連結方向固定機構の固定支持部も他方の継手の継手本体の内孔に対し内孔の周方向に回動可能であったり、内孔の中心線に沿った方向に移動可能であることも出来、これら周方向における回動や中心線に沿った方向における移動は、固定支持部と他方の継手の継手本体とを例えば固定螺子や接着剤等の公知の固定手段を使用して任意に固定することも出来る。
【００７４】
【発明の効果】
以上詳述したことから明らかなように、この発明に従った構造体の継手装置は、構成が簡単で、水上に浮かぶ物体上や水中や宇宙空間等の安定しない環境状況中はもちろんのこと高温や低温の外部環境に長期間さらされても構造物の組み立て作業が容易であるとともに分解作業も容易であり、さらには、温度膨張や温度収縮に起因する大きな歪みや応力を生じさせることがない。
【図面の簡単な説明】
【図１】（Ａ）は、第１の実施の形態に従った構造体の継手装置の１対の継手の一方の概略的な縦断面図であり；そして、
（Ｂ）は、（Ａ）の一方の継手の概略的な正面図である。
【図２】第１の実施の形態に従った構造体の継手装置の１対の継手が相互に連結されているとともに上記１対の継手の夫々の連結方向可変機構が機能している状況を概略的に示す半縦断面図である。
【図３】（Ａ）は、第２の実施の形態に従った構造体の継手装置の１対の継手の一方の概略的な縦断面図であり；そして、
（Ｂ）は、（Ａ）の一方の継手の概略的な正面図である。
【図４】第２の実施の形態に従った構造体の継手装置の１対の継手が相互に連結されているとともに上記１対の継手の夫々の連結方向可変機構が機能している状況を概略的に示す側面図である。
【図５】図４と同じ状況における第２の実施の形態に従った構造体の継手装置の１対の継手の概略的な縦断面図である。
【図６】図１の（Ａ）及び図１の（Ｂ）中に示されている第１の実施の形態に従った構造体の継手装置の１対の継手の変形例が、相互に連結されているとともに上記１対の継手の一方にのみ設けられている連結方向可変機構が機能している状況を概略的に示す側面図であり；
【図７】（Ａ）は、従来の構造体の継手装置の主要部を拡大し断面にして概略的に示す拡大断面図であり；
（Ｂ）は、図７の（Ａ）中に示されている従来の構造体の継手装置により４個の相互に独立した構造体が相互に連結された１つの状況を概略的に示す図であり；そして、
（Ｃ）は、図７の（Ａ）中に示されている従来の構造体の継手装置により２個の相互に独立した構造体が相互に連結された１つの状況を概略的に示す図である。
【符号の説明】
２０ａ，２０ｂ…構造体、２２ａ，２２ｂ…継手、２４…継手本体、２６…係合突部、２８…係止駒部、２８ａ…係止面、２９…係合凹所、３０…連結方向可変機構、α…仮想面、３２…球状支持部、３２ａ…球面の一部、３４…球面保持部、Ｃ…中心線、４０ａ，４０ｂ…構造体、４２ａ，４２ｂ…継手、４４…継手本体、４６…係合突部、４８…係止駒部、４８ａ…係止面、４９…係合凹所、５０…連結方向可変機構、５２…突入部、５４…拡大径部、５６ａ，５６ｂ…厚さ変化ワッシャ、５７ａ…一端面、５７ｂ…他端面、５８…半径方向移動案内部、５８ａ…凹面形状。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint device for a structure including a pair of joints for connecting structures independent of each other.
[0002]
[Prior art]
It is well known to assemble a large structure by interconnecting a plurality of independent structures.
[0003]
For example, a truss structure is well known as such a structure. A conventional truss structure is assembled by connecting a plurality of independent structures to each other by a joint device using a fixing member such as a weld or a bolt.
[0004]
For example, Shimizu Construction Research Report (VOL. 65, 1997. 7) discloses a joint device for connecting a plurality of truss structures to each other using bolts.
[0005]
In this conventional joint device, as shown in FIG. 7A, the tubular truss structure 10 made of CFRP (Carbon Fiber Reinforced Plastic) is disposed at both ends at predetermined positions via, for example, rivets (not shown). A stainless steel nose cone 12 is provided. The nose cone 12 has a truncated truncated cone shape, and a bolt 14 made of high-tensile steel is screwed into the nose cone 12 from the inner hole side of the tubular truss structure 10. A portion 16 protruding from the nose cone 12 in the shaft portion of the bolt 14 is covered with a collar 16 made of an aluminum alloy. A fixing pin 14 a is implanted in the portion of the shaft portion of the bolt 14, and a longitudinal groove 16 a extending in the extending direction of the shaft portion of the bolt 14 is formed on the inner peripheral surface of the collar 16. The fixing pin 14 a at the shaft portion of the bolt 14 protrudes into the vertical groove 16 a on the inner peripheral surface of the collar 16.
[0006]
The conventional joint device further includes a spherical node member 18. A screw hole 18a is formed at a predetermined position on the outer peripheral surface of the node member 18, and a recess 18b is formed at the entrance of the screw hole 18a.
[0007]
Then, after aligning the tip end of the shaft portion of the bolt 14 with the entrance of the screw hole 18a at a predetermined position on the outer peripheral surface of the node member 18, the bolt 16 together with the collar 16 is rotated in a predetermined direction. The shaft portion of the bolt 14 is screwed into the screw hole 18a. This screwing continues until the fixing pin 14a of the shaft portion of the bolt 14 is received in the recess 18b at the entrance of the screw hole 18a. If the fixing pin 14 a is accommodated in the recess 18 b, the bolt 14 cannot be rotated by the collar 16.
[0008]
In the conventional joint device assembled in this way, the compressive force applied between the tubular truss structure 10 and the node member 18 is mainly supported by the collar 16, and the tubular truss structure 10 and the node member 18 are supported. The tensile force loaded between the two is mainly supported by the bolt 14.
[0009]
If a node member 18 ′ having four screw holes formed at equal intervals on one maximum diameter virtual circle on the outer peripheral surface is prepared, such a node member 18 ′ is shown in FIG. As shown in (B), one end of each of the four tubular truss structures 10 can be connected.
[0010]
In addition, if a node member 18 '' having screw holes formed at two desired positions on the outer peripheral surface is prepared, such a node member 18 '' is shown in FIG. As shown, one end of each of the two tubular truss structures 10 can be connected.
[0011]
[Patent Literature]
Shimizu Construction Research Report (VOL.65, 19977.4)
[0012]
[Problems to be solved by the invention]
As the structure becomes larger, the number of structures that must be connected to each other inevitably increases, and the assembly work of the structure becomes difficult.
[0013]
Moreover, in the conventional joint device configured as described above, the tip of the shaft portion of the bolt 14 at one end of the tubular truss structure 10 is aligned with the inlet of the screw hole 18a at a predetermined position on the outer peripheral surface of the node member 18. The operation of rotating the collar 16 in a predetermined direction in order to achieve the desired screwing of the shaft portion of the bolt 14 with respect to the screw hole 18a is also difficult. The desired screwing cannot be released after the mating is achieved.
[0014]
Such complexity of the assembly work of the structure using the conventional joint device configured as described above is performed in an unstable environment such as an object floating on the water, underwater or outer space. If it gets worse.
[0015]
Moreover, in the conventional joint device configured as described above, the assembly work becomes difficult unless the dimensional accuracy is strictly controlled, and the structural body and the components of the joint device are subjected to high temperature and temperature contraction. The above assembling work becomes even more difficult in an environment that is exposed to an external environment of low temperature or low temperature for a long time.
[0016]
Further, even after the assembly work is completed, under such circumstances, the joint device is greatly distorted due to the temperature expansion and contraction of the structural body and the components of the joint device, and causes the fatigue failure of the joint device. It can be.
[0017]
The present invention has been made under the circumstances described above, and the object of the present invention is simple in structure, and not only in an unstable environment such as an object floating on water, in water or in outer space, but also in a high or low temperature external environment. A structure joint device that can be easily assembled and disassembled even after being exposed to a long period of time, and that does not cause large distortion or stress due to temperature expansion or contraction. Is to provide.
[0018]
[Means for Solving the Problems]
In order to achieve the above-described object of the present invention, the joint device for a structure according to the present invention is attached to a structure independent from each other and is detachably coupled to each other so as to be independent from each other. A pair of joints connecting the structures being connected,
Each of the pair of joints
A tubular joint body;
A plurality of engaging protrusions provided along the cylindrical center line from a plurality of positions spaced at predetermined intervals in the cylindrical circumferential direction, provided at the tip of the joint body;
A locking piece projecting toward a predetermined one in the circumferential direction at each projecting end of the plurality of engaging projections;
Is included.
[0019]
The pair of joints is inserted after inserting the plurality of engaging protrusions of the joint body of one joint into the plurality of engaging recesses between the plurality of engaging protrusions of the joint body of the other joint. By rotating the joint body of one joint relative to the joint body of the other joint in a predetermined direction in the circumferential direction, the plurality of locking pieces of the plurality of engaging protrusions of the one joint are The plurality of engaging projections of the joint of the plurality of locking pieces are locked in the direction away from each other in the direction along the center line,
At least one of the pair of joints is further provided with a coupling direction variable mechanism that couples the center line of the joint body to a predetermined direction with respect to a predetermined position of the corresponding structure.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, various embodiments and modifications of the present invention will be described in detail with reference to FIGS. 1 to 6 in the accompanying drawings.
[0021]
[First Embodiment]
First, a joint device for a structure according to a first embodiment of the present invention will be described in detail with reference to FIGS. 1A and 1B and FIG. 1A is a schematic longitudinal sectional view of one of a pair of joints of a joint device for a structure according to the first embodiment; FIG. FIG. 2 is a schematic front view of one joint of FIG. 1A; and FIG. 2 shows a pair of joints of the joint device of the structure according to the first embodiment connected to each other. FIG. 6 is a semi-longitudinal sectional view schematically showing a state in which each connection direction variable mechanism of the pair of joints is functioning.
[0022]
The joint device for a structure according to the first embodiment of the present invention is attached to the structures 20a and 20b that are independent from each other and is detachably coupled to each other so as to be independent from each other. A pair of joints 22a and 22b for connecting the structures 20a and 20b are provided. In this embodiment, since the pair of joints 22a and 22b have the same structure, only one joint 22a is shown in FIGS.
[0023]
In this embodiment, the structure 20a to which one of the joints 22a is attached is a tubular truss structure, for example, formed of CFRP (Carbon Fiber Reinforced Plastic), but is a structure of another shape. The materials can also be various materials including various metals, various synthetic resins, and combinations thereof. One joint 22a may be attached only to one end of the tubular truss structure as a predetermined position of the tubular truss structure constituting the corresponding structure 20a, or attached to both ends of the tubular truss structure. It is good.
[0024]
In this embodiment, the structure 20b to which the other joint 22b is attached is a node (binding point) member, and is attached to a predetermined position on the outer peripheral surface of the node (binding point) member.
[0025]
Each of the pair of joints 22a and 22b includes a tubular joint body 24. Similarly to the structure 20a, the joint body 24 can also be formed of various arbitrary materials. In this embodiment, the cylindrical shape is a cylindrical shape.
[0026]
A plurality of engagement protrusions 26 projecting along a cylindrical center line C are provided at a distal end portion of the joint body 24 from a plurality of positions spaced at predetermined intervals in the cylindrical circumferential direction.
[0027]
A locking piece 28 is projected from each protruding end of the plurality of engaging protrusions 26 toward a predetermined one in the circumferential direction.
[0028]
As shown in FIG. 2, the pair of joints 22a and 22b includes a plurality of engagement protrusions 26 of the joint body 24 of one joint 22a and a plurality of engagement protrusions of the joint body 24 of the other joint 22b. After being inserted into the plurality of engagement recesses 29 between the portions 26, the joint body 24 of one joint 22a is rotated relative to the joint body 24 of the other joint 22b toward a predetermined one in the circumferential direction. As a result, the plurality of locking pieces 28 of the plurality of engaging protrusions 26 of the one joint 22a are moved to the center line C with respect to the plurality of locking pieces 28 of the plurality of engaging protrusions 26 of the other joint 22b. It can be made to latch in the direction away from each other in the direction along.
[0029]
In this embodiment, in the plurality of locking pieces 28 of the plurality of engaging protrusions 26 of the respective joint bodies 24 of the pair of joints 22a and 22b, the plurality of engagements of the joint body 24 of one joint 22a. When the plurality of locking pieces 28 of the protrusion 26 are locked to the plurality of locking pieces 28 of the plurality of engaging protrusions 26 of the joint body 24 of the other joint 22b, the locking surfaces 28a contact each other. However, the locking surface 28a is inclined from the virtual plane α orthogonal to the center line C toward the protruding end portion of the corresponding engaging protrusion 26.
As described above, the inclination angle θ of the pair of joints 22a and 22b is such that the locking surfaces 28a of the plurality of locking pieces 28 of the plurality of engaging protrusions 26 of the joint main body 24 are locked together as described above. Even if the pair of joints 22a and 22b is pulled along the center line C in the direction of being separated from each other, the locking is stabilized by the frictional force acting on each locking surface 28a. The value is set to be maintained, and the value is in a range of 1 degree to 2 degrees, for example.
[0030]
The inclination angle as described above is obtained when the pair of joints 22a and 22b is subjected to a compressive force or a tensile force in a direction along the center line C after the locking as described above is achieved. A plurality of engaging protrusions 26 and a plurality of the pair of joints 22a and 22b are arranged so that the pair of joints 22a and 22b do not substantially move in the direction along the center line C. Even when the respective outer dimensions of the locking piece 28 are set, the locking operation as described above is facilitated, the operation of releasing the locking as described above is facilitated, and further as described above. After locking is achieved, it is ensured that the locking as described above is securely held.
[0031]
The tubular joint body 24 has an inner flange 24a at the end opposite to the side where the plurality of engaging protrusions 26 protrude in the direction along the center line C.
[0032]
Each of the pair of joints 22a and 22b further includes a connection direction variable mechanism 30 that connects the center line of the joint body 24 to a predetermined direction with respect to a predetermined position of the corresponding structure 20a or 20b. Yes.
[0033]
The coupling direction varying mechanism 30 includes a spherical support portion 32 having at least a spherical portion 32a in which the joint body 24 of each joint 22a or 22b is fixed at a predetermined position of the corresponding structure 20a or 20b, and a spherical support. A spherical holding portion 34 which holds the at least spherical portion 32a of the portion 32 and is slidable on the at least spherical portion 32a and connected to the joint body 24 of each joint 22a or 22b. Contains.
[0034]
In this embodiment, the spherical holding portion 34 is connected to the joint body 24 in the inner hole of the joint body 24. Further, in order to hold at least a part of the spherical surface 32a of the spherical support part 32 by the spherical surface holding part 34 so as to be slidable as described above, the spherical surface holding part 34 is substantially equal to at least a part of the spherical surface 32a of the spherical support part 32. In other words, it is necessary to form a spherical support recess 34a constituted by at least a part of a spherical surface having the same diameter. In order to facilitate the incorporation of at least the spherical portion 32a of the spherical support portion 32 into the spherical support recess 34a of the spherical support portion 34 in this embodiment, the spherical support portion 34 in this embodiment is the joint body 24. It is constituted by two blocks divided into two by a dividing plane parallel to the center line C. The two blocks of the spherical holding portion 34 are separated from each other outside the inner hole of the joint main body 24, and then the spherical support portion 32 includes at least a spherical portion 32a surrounded by the spherical support recess 34a. At least a part of the spherical surface 32a is covered, and in this state, it is inserted into the inner hole of the joint body 24 as shown in FIGS. Retained. The holding of the spherical holding portion 34 by the inner hole may be performed only by a frictional force generated between the inner peripheral surface of the inner hole and the outer peripheral surface of the spherical holding portion 34, but an adhesive, a fixing screw, etc. It can be strengthened by known fixing means.
[0035]
In addition, the spherical surface holding part 34 can also be comprised by the some block divided | segmented into several by the some division surface parallel with respect to the centerline C of the coupling main body 24. FIG.
[0036]
In the combination of the pair of joints 22a and 22b of the joint device of this embodiment, as shown in FIG. 2, the center line C of the joint body 24 of one joint 22a is attached to the other joint 22b. The center line C of the joint body 24 of the other joint 22a matches the center line C of the joint body 24 of the one joint 22a even if the other structure 20b is inclined with respect to the perpendicular V at a predetermined position. The coupling body 24 of the other coupling 22a is inclined by the connecting direction variable mechanism 30 so that the center line C of the coupling body 24 of the other coupling 22a is inclined with respect to the perpendicular V at a predetermined position of the other structure 20b. The joints 22a and 22b can be connected to each other, that is, one structure 20a and the other structure 20b can be connected to each other. Further, the outer dimensions of one structure 20a and the other structure 20b, particularly in the direction along the center line C and the perpendicular line V, due to thermal expansion, thermal contraction, dimensional tolerance in the manufacture of members, and dimensional tolerance during assembly. Even if the length greatly changes, such a change is caused by the movement of the spherical holding portion 34 in the inner hole of the joint body 24 in the direction along the center line C or the perpendicular line V. 22b can be appropriately connected to each other. Therefore, when the holding of the spherical holding portion 34 in the inner hole is strengthened by a known fixing means such as an adhesive or a fixing screw as described above, the fixing means is used for the pair of joints 22a and 22b. It is preferable to carry out after the mutual proper connection is completed.
[0037]
Furthermore, heat may be applied to the entire structure including the structural bodies 20a and 20b as constituent elements, and the temperature of the structure may increase unevenly and the entire structure may be distorted. In such a case, a force may be applied in the direction in which the relative angular relationship between the structures 20a and 20b is initially assembled, or in a direction deviated from that at normal temperature. This is a phenomenon that is widely known as structural distortion or thermal stress due to thermal expansion, and the stress applied to the joints and members of the structure at this time is generally very high unless special design considerations are made. Will become bigger.
[0038]
However, even in such a case, the spherical body holding portion 34 and the spherical surface supporting portion 32 slide relative to each other in the inner hole of the joint body 24, so that the distortion due to the temperature rise of the structure body is absorbed. No great stress is applied to 20a or the structure 20b.
[0039]
In this embodiment, one structure 20a to which one joint 22a is attached and the other structure 20b to which the other joint 22b is attached are not only independent from each other but also have different structures. However, the same structure, for example, the other joint 22b may be the same tubular truss member as the one structure 20a.
[0040]
[Second Embodiment]
Next, a structure joint device according to a second embodiment of the present invention will be described in detail with reference to FIGS. 3A and 3B, FIG. 4, and FIG. 3A is a schematic longitudinal sectional view of one of a pair of joints of the joint device of the structure according to the second embodiment; FIG. FIG. 4 is a schematic front view of one joint of FIG. 3A; FIG. 4 shows a pair of joints of the joint device of the structure according to the second embodiment connected to each other. FIG. 5 is a side view schematically showing a state in which each of the coupling direction variable mechanisms of the pair of joints is functioning; and FIG. 5 is according to the second embodiment in the same situation as FIG. It is a schematic longitudinal cross-sectional view of a pair of joint of the joint apparatus of a structure.
[0041]
The joint device for a structure according to the second embodiment of the present invention is also provided by the structure according to the first embodiment of the present invention with reference to FIGS. 1A and 1B and FIG. Similarly to the joint device of FIG. 1, a pair of joints that are attached to the structures 40a and 40b that are independent from each other and that are detachably coupled to each other to connect the structures 40a and 40b that are independent from each other. 42a and 42b are provided. In this embodiment, since the pair of joints 42a and 42b have the same structure, only one joint 42a is shown in FIGS. 3 (A) and 3 (B).
[0042]
In this embodiment, the structure 40a to which one of the joints 42a is attached is a tubular truss structure, for example, formed of CFRP (Carbon Fiber Reinforced Plastic), but is a structure of another shape. The materials can also be various materials including various metals, various synthetic resins, and combinations thereof. One joint 42a may be attached only to one end of the tubular truss structure as a predetermined position of the tubular truss structure constituting the corresponding structure 40a, or attached to both ends of the tubular truss structure. It is good.
[0043]
In this embodiment, the structure 40b to which the other joint 42b is attached is a node (binding point) member, and is attached to a predetermined position on the outer peripheral surface of the node (binding point) member.
[0044]
Each of the pair of joints 42 a and 42 b includes a tubular joint body 44. Similarly to the structure 40a, the joint body 44 can also be formed of various arbitrary materials. In this embodiment, the cylindrical shape is a cylindrical shape.
[0045]
A plurality of engaging protrusions 46 are provided at the distal end portion of the joint body 44 so as to protrude along the cylindrical center line C from a plurality of positions spaced at predetermined intervals in the cylindrical circumferential direction.
[0046]
A locking piece 48 is projected from each protruding end of the plurality of engaging protrusions 46 toward a predetermined one in the circumferential direction.
[0047]
As shown in FIGS. 4 and 5, the pair of joints 42a and 42b includes a plurality of engagement protrusions 46 of the joint body 44 of one joint 42a and a plurality of joint bodies 44 of the other joint 42b. After being inserted into the plurality of engaging recesses 49 between the engaging protrusions 46, the joint body 44 of one joint 42a is relative to the joint body 44 of the other joint 42b toward a predetermined one in the circumferential direction. The plurality of locking pieces 48 of the plurality of engaging protrusions 46 of one joint 42a are rotated with respect to the plurality of locking pieces 48 of the plurality of engaging protrusions 46 of the other joint 42b. They can be locked in directions that are separated from each other in the direction along the center line C.
[0048]
In this embodiment, in the plurality of locking pieces 48 of the plurality of engaging protrusions 46 of the respective joint bodies 44 of the pair of joints 42a and 42b, the plurality of engagements of the joint body 44 of one joint 42a. When the plurality of locking pieces 48 of the protrusion 46 are locked to the plurality of locking pieces 48 of the plurality of engaging protrusions 46 of the joint body 44 of the other joint 42b, the locking surfaces 48a that come into contact with each other. However, the locking surface 48a is inclined from the virtual plane α orthogonal to the center line C toward the protruding end portion of the corresponding engaging protrusion 46.
The inclination angle θ is such that the locking surfaces 48a of the plurality of locking pieces 48 of the plurality of engaging protrusions 46 of the joint bodies 44 of the pair of joints 42a and 42b are locked to each other as described above. Even if the pair of joints 42a and 42b are pulled in the direction separated from each other along the center line C, the locking is stabilized by the frictional force acting on each locking surface 48a. The value is set to be maintained, and the value is in a range of 1 degree to 2 degrees, for example.
[0049]
The inclination angle as described above is obtained when the pair of joints 42a and 42b is subjected to a compressive force or a pulling force in a direction along the center line C after the locking as described above is achieved. A plurality of engagement protrusions 46 and a plurality of the pair of joints 42a and 42b are provided so that the pair of joints 42a and 42b do not substantially move in the direction along the center line C. Even when the respective outer dimensions of the locking piece 48 are set, the locking operation as described above is facilitated, the operation of releasing the locking as described above is facilitated, and further, as described above. After the locking is achieved, it is ensured that the locking as described above is securely held.
[0050]
The tubular joint body 44 has an inner flange 44a at the end opposite to the side where the plurality of engaging protrusions 46 protrude in the direction along the center line C.
[0051]
As is clear from the above detailed description, a pair according to the second embodiment including the joint body 44, the plurality of engaging projections 46, the plurality of locking pieces 48, and the locking surface 48a. The joints 42a and 42b are configured in a pair according to the first embodiment including the joint body 24, the plurality of engaging protrusions 26, the plurality of locking pieces 28, and the locking surface 28a. This is the same as the configuration of the joints 22a and 22b.
[0052]
The second embodiment is different from the first embodiment described above with respect to the predetermined positions of the corresponding structures 40a and 40b that each of the pair of joints 42a and 42b further includes. This is a configuration of a connecting direction variable mechanism 50 that connects the center line of the joint body 44 so as to be directed in a desired direction.
[0053]
In the coupling direction variable mechanism 50, the joint body 44 of each joint 42a, 42b is fixed at a predetermined position of the corresponding structure 40a or 40b, and enters the inner hole of the joint body 44 of the corresponding joint 42a or 42b. The rush part 52 and the enlarged diameter part 54 fixed to the rush part 52 are included.
[0054]
The connecting direction variable mechanism 50 further extends annularly around the center line C on the opposite side of the protruding portion 52 from the protruding portion 52 with respect to the enlarged diameter portion 54 in the inner hole, and the center line C of the inner hole. And at least two thickness change washers 56a and 56b provided to overlap each other in a direction along the direction of the inner diameter of the inner diameter of the inner diameter of the inner diameter of the inner diameter portion 54. And a radial movement guide portion 58 that is in contact with the end surface of the enlarged diameter portion 54 on the entry end side and enables the enlarged diameter portion 54 to move in the radial direction of the inner hole.
[0055]
Each of the at least two thickness change washers 56a and 56b has one end 57a extending in a direction along the center line extending in a direction perpendicular to the center line, and The other end 57b of the both end faces extends in a direction obliquely intersecting the respective center lines.
[0056]
The surface 58 a with which the end face on the entry end side of the enlarged diameter portion 54 abuts in the radial direction movement guide portion 58 has a concave shape that is recessed in the protrusion direction of the entry portion 52.
[0057]
In the inner hole, the enlarged diameter portion 54 is sandwiched between at least two thickness change washers 56a and 56b and the radial movement guide portion 58 in the direction along the center line C of the inner hole. By moving one of the at least two thickness change washers 56a and 56b in the circumferential direction relative to the other, the radial movement guide portion 58 is formed on the end surface of the enlarged diameter portion 54 on the entry end side. The joint body 44 of the joint 42a or 42b corresponding to the projecting end of the protrusion 52 can move in the radial direction of the inner hole. This is because the joint main body 44 holding the radial direction movement guide portion 58 has its center line C with respect to the projecting end of the entry portion 52, that is, a perpendicular of the predetermined position of the corresponding structure 20a or 20b. It means to incline so as to incline with respect to V.
[0058]
Note that one of the two thickness change washers 56a and 56b can be moved relative to the other in the circumferential direction, for example, as follows. In the outer peripheral wall of the joint main body 44, a not-shown long groove for washer operation extending in a predetermined length toward the circumferential direction of the outer peripheral wall is provided in advance in a portion corresponding to one outer peripheral surface of the two thickness change washers 56a and 56b. In addition, a tool hooking groove (not shown) is formed in advance on one outer peripheral surface of the two thickness change washers 56a and 56b. Then, a tool (not shown) is inserted into a washer operating long groove (not shown), and the insertion end of the tool (not shown) is hooked on the tool catching groove on one outer peripheral surface of the two thickness change washers 56a and 56b. Thus, one of the two thickness change washers 56a and 56b can be moved relative to the other in the circumferential direction.
[0059]
Further, by moving both of the two thickness change washers 56a and 56b simultaneously in the circumferential direction, the joint main body 44 holding the radial movement guide portion 58 has its center line C at the protruding end of the protruding portion 52. In other words, the direction in which the corresponding structure 20a or 20b is inclined with respect to the normal V at the predetermined position can be arbitrarily set.
[0060]
For example, the two thickness change washers 56a and 56b can be simultaneously moved in the circumferential direction as follows. On the outer peripheral wall of the joint body 44, a washer operating long groove (not shown) that extends a predetermined length in the circumferential direction of the outer peripheral wall also at a portion corresponding to the other outer peripheral surface of the two thickness change washers 56a and 56b. A tool hook groove (not shown) is formed in advance on the other outer peripheral surface of the two thickness change washers 56a and 56b. Then, a tool (not shown) is inserted into the two long washer operation grooves (not shown), and the insertion ends of the tools (not shown) are hooked on the tool catch grooves on the outer peripheral surfaces of the two thickness change washers 56a and 56b. The two thickness change washers 56a and 56b are simultaneously moved in the circumferential direction by a tool that does not.
[0061]
The two thickness change washers 56a and 56b and the radial direction movement guide portion 58 are held by the inner hole and the inner peripheral surface of the inner hole and the two thickness change washers 56a and 56b and the radial direction movement guide portion 58. Although it may be performed only by a frictional force generated between each of the outer peripheral surfaces, it can be strengthened by a known fixing means such as an adhesive or a fixing screw.
[0062]
In the combination of the pair of joints 42a and 42b of the joint device of this embodiment, as shown in FIGS. 4 and 5, the center line C of the joint body 44 of one joint 42a is the same as the other joint 42b. Even if the second structure 42b is inclined with respect to the perpendicular V at a predetermined position, the center line C of the joint body 44 of the other joint 42a is aligned with the center line C of the joint body 44 of the one joint 42a. By inclining the center line C of the joint body 44 of the other joint 42a with respect to the perpendicular V at a predetermined position of the other structure 40b, the joint body 44 of the other joint 42a is inclined by the connecting direction variable mechanism 50 so as to match. The pair of joints 42a and 42b can be connected to each other, that is, one structure 40a and the other structure 40b can be connected to each other. Further, the outer dimensions of one structure 40a and the other structure 40b, particularly in the direction along the center line C and the perpendicular line V, due to dimensional tolerances during thermal expansion and contraction, member manufacturing, and dimensional tolerances during assembly. In order to allow the pair of joints 42a and 42b to be appropriately connected to each other in spite of such a change, the length and the inner flange 44a of the joint body 44 and the two pieces are changed. An annular bag (not shown) in which a gel-like material with very little thermal expansion and contraction is sealed is interposed between the thickness change washers 56a and 56b, or the radial movement guide portion 58 is thermally expanded. Further, it can be achieved by forming a gel-like material with very little heat shrinkage by a sealed bag and absorbing the change in the outer diameter due to the thermal expansion or heat shrinkage with the gel-like substance.
[0063]
Further, when heat is applied to the entire structure to which the structures 40a and 40b are attached as components, and the temperature rises unevenly, the entire structure may be distorted. In this case, the relative angular relationship between the structures 40a and 40b may change from the beginning of assembly or normal temperature.
[0064]
In such a case, in order to prevent the structures 40a and 40b from being subjected to large stress, stress level, or distortion, heat is generated between the structures 40a and 40b and the two thickness change washers 56a and 56b. An annular bag sealed with a gel-like substance with little expansion or thermal contraction or a packing such as silicon rubber or fluororesin rubber may be interposed between them. Alternatively, instead of the thickness change washers 56a and 56b, an annular bag sealed with a gel-like substance with little thermal expansion or contraction, a thermoplastic resin, or an elastic material such as silicon rubber or fluororesin rubber is installed. By doing so, the distortion caused by the heat can be absorbed.
[0065]
Further, when the thickness change washers 56a and 56b are made of a thermoplastic resin, a heater (not shown) is installed on the thickness change washers 56a and 56b, and this heater is used when distortion occurs due to an uneven temperature rise of the entire structure. As a result, the thermoplastic resin is softened, and as a result, the relative angular relationship between the structures 40a and 40b can be easily changed to absorb the strain caused by the temperature rise.
[0066]
When the holding of the two thickness change washers 56a and 56b and the radial movement guide portion 58 by the inner hole is strengthened by a known fixing means such as an adhesive or a fixing screw as described above, The use is preferably performed after proper connection between the pair of joints 42a and 42b is completed.
[0067]
Further, when the two thickness change washers 56a and 56b and the radial movement guide 58 are made of a thermosetting resin or a photo-curing resin, after the appropriate coupling between the joints 42a and 42b is finished, It is preferable to cure the resin by applying heat or light.
[0068]
Also in this embodiment, one structure 40a to which one joint 42a is attached and the other structure 40b to which the other joint 42b is attached are not only independent from each other but also have different structures. However, the same configuration, for example, the other joint 42b may be a tubular truss member that is the same as the one structure 40a.
[0069]
[Modification]
In the first embodiment described above with reference to FIGS. 1A and 1B and FIG. 2, each of the pair of joints 22 a and 22 b includes the coupling direction variable mechanism 30. Only at least one of the pair of joints 22 a and 22 b may be provided with the coupling direction variable mechanism 30.
[0070]
FIG. 6 shows a state in which one joint 22a provided with the connecting direction variable mechanism 30 and the other joint 22b ′ not provided with the connecting direction variable mechanism 30 are connected to each other. 22 b ′ is attached to a predetermined position of the corresponding structure 20 b via a fixing support portion 33 a of the connection direction fixing mechanism 33. The connection direction fixing mechanism 33 cannot incline the joint 22b ′ with respect to the perpendicular V at the predetermined position. In FIG. 6, one structure 20a connected to one joint 22a via the connecting direction variable mechanism 30 is inclined with respect to a perpendicular V at a predetermined position of the other structure 20b. It is shown.
[0071]
The fixing support portion 33a of the coupling direction fixing mechanism 33 can be rotated in the circumferential direction of the inner hole with respect to the inner hole of the joint body 24 of the other joint 22b ′, or in a direction along the center line of the inner hole. The rotation in the circumferential direction and the movement in the direction along the center line can be performed by moving the fixed support portion 33a and the joint main body 24 of the other joint 22b ′, such as a fixing screw or an adhesive. It can also be arbitrarily fixed using the fixing means.
[0072]
In the second embodiment described above with reference to FIGS. 3A and 3B to FIG. 5, each of the pair of joints 42a and 42b includes the coupling direction variable mechanism 50. Only at least one of the pair of joints 42 a and 42 b may be provided with the coupling direction variable mechanism 50.
[0073]
Also in this case, the other of the pair of joints 42a and 42b is attached to a predetermined position of the corresponding structure via the fixing support portion of the coupling direction fixing mechanism. The connection direction fixing mechanism cannot incline the other joint with respect to the perpendicular at the predetermined position. Thus, the fixing support portion of the coupling direction fixing mechanism applied to the other of the pair of joints 42a and 42b of the second embodiment is also in the circumferential direction of the inner hole with respect to the inner hole of the joint body of the other joint. It is possible to rotate or move in the direction along the center line of the inner hole. The rotation in the circumferential direction and the movement in the direction along the center line are performed by the fixed support portion and the other joint. The joint body can be arbitrarily fixed using a known fixing means such as a fixing screw or an adhesive.
[0074]
【The invention's effect】
As is clear from the above detailed description, the joint device for a structure according to the present invention has a simple structure and is not only in an unstable environment such as an object floating on the water or in water or outer space. It is easy to assemble and disassemble structures even if exposed to a low temperature external environment for a long time, and does not cause large distortion or stress due to temperature expansion or contraction. .
[Brief description of the drawings]
FIG. 1A is a schematic longitudinal sectional view of one of a pair of joints of a joint device for a structure according to a first embodiment;
(B) is a schematic front view of one joint of (A).
FIG. 2 shows a situation in which a pair of joints of the joint device of the structure according to the first embodiment are connected to each other and the connecting direction variable mechanisms of the pair of joints are functioning. It is a half longitudinal cross-sectional view shown roughly.
FIG. 3A is a schematic longitudinal sectional view of one of a pair of joints of a joint device for a structure according to a second embodiment; and
(B) is a schematic front view of one joint of (A).
FIG. 4 shows a situation in which a pair of joints of a joint device of a structure according to the second embodiment are connected to each other, and each connection direction variable mechanism of the pair of joints functions. It is a side view shown roughly.
FIG. 5 is a schematic longitudinal sectional view of a pair of joints of the joint device for a structure according to the second embodiment in the same situation as FIG. 4;
FIG. 6 shows a modification of a pair of joints of a joint device of a structure according to the first embodiment shown in FIGS. 1A and 1B. And is a side view schematically showing a situation in which the connecting direction variable mechanism provided only in one of the pair of joints is functioning;
FIG. 7A is an enlarged cross-sectional view schematically showing an enlarged main portion of a conventional joint device of a structural body in cross section;
(B) is a diagram schematically showing one situation where four mutually independent structures are connected to each other by the joint device of the conventional structure shown in FIG. 7 (A). Yes; and
(C) is a diagram schematically showing one situation where two mutually independent structures are connected to each other by the joint device of the conventional structure shown in FIG. is there.
[Explanation of symbols]
20a, 20b ... structure, 22a, 22b ... joint, 24 ... joint body, 26 ... engaging projection, 28 ... locking piece, 28a ... locking surface, 29 ... engaging recess, 30 ... variable coupling direction Mechanism: α: Virtual surface, 32: Spherical support portion, 32a: Part of spherical surface, 34: Spherical surface holding portion, C: Center line, 40a, 40b ... Structure, 42a, 42b ... Joint, 44 ... Joint body, 46 ... engaging protrusion, 48 ... locking piece part, 48a ... locking surface, 49 ... engaging recess, 50 ... coupling direction variable mechanism, 52 ... rushing part, 54 ... enlarged diameter part, 56a, 56b ... thickness Change washer, 57a ... one end surface, 57b ... the other end surface, 58 ... radial movement guide, 58a ... concave shape.

Claims

A pair of joints attached to the mutually independent structures and removably coupled to each other to connect the mutually independent structures;
Each of the pair of joints
A tubular joint body;
A plurality of engaging protrusions provided along the cylindrical center line from a plurality of positions spaced at predetermined intervals in the cylindrical circumferential direction, provided at the tip of the joint body;
A locking piece projecting toward a predetermined one in the circumferential direction at each projecting end of the plurality of engaging projections;
Including
A pair of joints is formed by inserting a plurality of engagement protrusions of a joint body of one joint into a plurality of engagement recesses between a plurality of engagement protrusions of a joint body of the other joint. By rotating the joint body of the other joint relative to the joint body of the other joint in a predetermined direction in the circumferential direction, the plurality of locking pieces of the plurality of engaging protrusions of the one joint are moved to the other joint. Locking the plurality of engaging protrusions of the plurality of engaging protrusions in directions away from each other in the direction along the center line,
At least one of the pair of joints further includes a coupling direction variable mechanism that couples the center line of the joint main body to a predetermined position with respect to a predetermined position of the corresponding structure.
Structure joint device.

In the plurality of locking pieces of the plurality of engaging protrusions of each joint body of the pair of joints, the plurality of locking pieces of the plurality of engaging protrusions of the joint body of one joint are The locking surfaces that come into contact with each other when locked to the plurality of locking pieces of the plurality of engaging protrusions of the joint body correspond to the locking surfaces corresponding to the locking surfaces from the virtual plane orthogonal to the center line. Inclined toward the projecting end of the mating projection,
The joint device for a structure according to claim 1.

The coupling direction variable mechanism is
A spherical support portion having at least a part of a spherical surface in which a joint body of the at least one joint is fixed at a predetermined position of a corresponding structure;
A spherical holding portion that holds at least a part of the spherical surface of the spherical support portion and is slidable on at least a part of the spherical surface and connected to a joint body of each joint;
The joint device for a structure according to claim 1, comprising:

The joint device for a structure according to claim 3, wherein the spherical holding portion is connected to the joint body in an inner hole of the joint body.

The coupling direction variable mechanism is
A rush portion in which the joint body of the at least one joint is fixed at a predetermined position of the corresponding structure and enters the inner hole of the joint body of the corresponding joint;
An enlarged diameter part fixed to the entry part,
In the inner hole, it extends annularly around the center line on the side opposite to the protruding end of the protruding part with respect to the enlarged diameter part, and overlaps with each other in the direction along the center line of the inner hole. At least two thickness change washers that are
It is provided on the piercing end side of the plunging portion with respect to the enlarged diameter portion in the inner hole, abuts on the end surface of the enlarged diameter portion on the piercing end side, and enables the movement of the enlarged diameter portion in the radial direction of the inner hole. A radial movement guide,
Contains
Each of the at least two thickness change washers has one of the end faces extending in a direction along the center line extending in a direction perpendicular to the center line, and The other extends in a direction obliquely intersecting each of the center lines,
In the inner hole, the enlarged diameter portion is sandwiched between the at least two thickness change washers and the radial movement guide portion in a direction along the center line of the inner hole, and the at least two thicknesses By moving one of the length change washers relative to the other in the circumferential direction, the radial movement guide portion moves in the radial direction of the inner hole on the end surface of the enlarged diameter portion on the entry end side, and The joint body of the joint corresponding to the projecting end of the projecting portion moves in the radial direction of the inner hole;
The joint device for a structure according to claim 1.

6. The structure according to claim 5, wherein a surface of the radially moving guide portion on which an end surface of the enlarged diameter portion on the entry end side abuts has a concave shape recessed in a protruding direction of the entry portion. Fitting device.

6. The joint device for a structure according to claim 5, wherein the radial movement guide portion is made of a gel material, a thermoplastic resin, a thermosetting resin, or a photocurable resin.

The said thickness change washer is a coupling device of the structure of Claim 5 comprised by the gel-like substance, the thermoplastic resin, the thermosetting resin, or the photocurable resin.