JP3759251B2

JP3759251B2 - Expansion joint

Info

Publication number: JP3759251B2
Application number: JP23876996A
Authority: JP
Inventors: 葵鈴木; 克宏河邉; 卓世木山; 義昭中丸
Original assignee: 株式会社エービーシー商会
Priority date: 1996-09-10
Filing date: 1996-09-10
Publication date: 2006-03-22
Anticipated expiration: 2016-09-10
Also published as: JPH1082101A

Description

【０００１】
【発明の属する技術分野】
本発明は、建造物の躯体間隙を塞ぐエキスパンションジョイントに関する。なお、本発明に言う躯体は、構造躯体自体に限らず柱や取付用固定部等、エキスパンションジョイントを連結する躯体側の種々の固定部分を含む広義の意味で使用しており、本発明はこのような構成を含むものである。
【０００２】
【従来の技術】
間隙両側の躯体各端部に固着した両固定部材に亘って、弾性変形可能なバネを架設し、このバネ中央に両躯体間に亘る幅のカバー板の中央部を連結する構成のエキスパンションジョイントが知られている。これに対してバネを用いない構成のものとして、杆体を井桁状に組み合わせて間隙幅方向（Ｘ方向）に伸縮自在とした構造を有する補強体を用い、この両端を隣接躯体に固着した固定部材にそれぞれ軸止し、この軸回転による角度変更によって間隙長手方向（Ｙ方向）の変動に追従可能とし、両躯体端部表面に沿ったカバー板をそれぞれ躯体面と交叉方向（Ｚ方向）に回転可能に取り付け、この両カバー板に両側が所定幅重合するように間隙カバー板を配設し、間隙カバー板の中央と補強体の伸縮構造の中央部とを軸連結した構成のエキスパンションジョイントが公知である（特開昭５７−２０１４４６号）。
【０００３】
【発明が解決しようとする課題】
上記バネを用いた構成のものは、躯体変動に追従可能な範囲が比較的狭く、大きな変動に対応できない問題があると共に、連結の物理的強度が比較的小さいため、変動が大きいとカバー板などが離脱するおそれがあった。これに対してバネを介せずに硬質部材をネジ等で結合すれば離脱のおそれを少なくすることができる。この場合、大きな変動に対してより安定した追従が可能な構成とし、かつ変動に伴ってカバー板などにゆがみ（ずれ）が生じない構成とし、しかも構成そのものが簡潔であるのが好ましい。
上記後者の構成について言えば、比較的複雑な伸縮構造を採用し、Ｘ方向の変動許容範囲は井桁状の比較的狭い伸縮構造の範囲に限定され、Ｙ方向はこの伸縮構造部分が固定部材に軸止されることによる回転可能な範囲に限定されると共に、間隙カバー板は補強体に一つの軸で連結されているために、変動摩擦を受けて間隙カバー板が回転しゆがんでしまうおそれがある等の問題があった。
【０００４】
本発明は、上記問題点を含めて改善し、バネを用いなくとも躯体変動が吸収可能であり、かつ簡潔な構成を有し、大きな変動にも対応して追従し変動吸収が確実に行われ、かつカバー板に不測のゆがみが生じさせることのないエキスパンションジョイントを提供せんとするものであり、床と床、屋根と屋根、床と壁、屋根と壁等の間隙部分に適用することができ、免震構造物でなくとも施工して十分にエキスパンションジョイントの機能を発揮し得ると共に、特に、基礎と上部構造物との間に高減衰装置を設置した免震構造物における間隙部分に適用してより一層高い効果を奏するエキスパンションジョイントを提供する。
【０００５】
【課題を解決するための手段】
上記課題を解決するために、本発明のエキスパンションジョイントは、間隙両側又は片側の躯体部分に連結すると共に躯体表面に沿うカバー面を有する端部カバー板に対し、間隙を覆う間隙カバー板を幅方向端部が適宜幅で重なり合うように配設することにより、躯体間隙を被覆するようにしたエキスパンションジョイントにおいて、間隙両側の躯体側乃至間隙カバー板に間隙長手方向に沿う適宜長さのガイドレールをそれぞれ固着し、両ガイドレールに移動自在に移動部材を装着し、各移動部材に両端部を軸止した連結杆を躯体間に斜行状態となるように配設し、この連結杆に適宜長さの補助杆の中間部を両杆が互いにＸ状となるように軸止し、上記ガイドレール内には移動自在な補助移動部材を装着し、これに上記補助杆の一端を軸止し、間隙カバー板の裏面の幅中間部に間隙長手方向の補助ガイドレールを固着し、これに補助移動部材を装着し、この補助移動部材に上記補助杆の他端を軸止し、かつ連結杆中間部と間隙カバー板とを軸止状態を介して連結した構成を有することを特徴とする。
上記連結杆には、１本の補助杆を軸止したものとし、或いは２本の補助杆を連結杆の両側部分にそれぞれ軸止したものとすることができる。
なお、上記連結杆と補助杆はいずれも躯体表面に対して少なくとも平行方向に回転自在であり、ガイドレールと補助ガイドレールはいずれも躯体表面に対して少なくとも平行方向に移動自在である。
【０００６】
本発明はさらに、上記各構成において、間隙カバー板の中間部から両側又は片側の端部カバー板に跨がる長さの規制杆を間隙カバー板の裏面中間部に軸止し、規制杆の両側部又は片側部を躯体側の定位置に形成した所定長さの受け部を通るように配設した構成を有したものとすることができる。
規制杆は、間隙カバー板と共に間隙幅方向に躯体に対して相対的にスライドできるように設置され、間隙長手方向には、少なくとも片側の躯体側と自由状態となるか、両躯体側に対して角度変位自在乃至スライド自在となるようにしてなっている。
【０００７】
上記ガイドレールに装着する移動部材は長く設定すると共に、その側面に補助杆がスライド可能となるようにスライド溝を開口させ、移動部材の内側に補助移動部材を移動自在に装着してなる構成とすることができる。
また、移動部材と補助移動部材とは共にガイドレール内に直接的に移動自在に装着してなる構成とすることもできる。
【０００８】
上記構成のエキスパンションジョイントは、躯体Ａ，Ｂが間隙幅方向（Ｘ方向）に変動した場合には、連結杆の傾斜状態が躯体間隙方向に対して変位すると共にこの両端に軸止した移動部材がガイドレールに沿って移動して追従作用し、また、連結杆に補助杆が軸止されている場合には、両杆の交叉角が変位すると同時に両杆を軸止した移動部材と補助移動部材がガイドレールに沿って移動して追従作用する。
間隙カバー板は、この連結杆に軸止状態を介して連結されているので、躯体の変動によるゆがみを受けることがない。補助杆を軸止している場合には、間隙カバー板が補助移動部材を移動自在に装着した補助ガイドレールと一体となっていることにより、変動によるゆがみを受けることなく、常に両躯体間すなわち両側の端部カバー板間に正確に位置し続け、その中央からずれることがなく、離脱のおそれも生じない。
【０００９】
躯体Ａ，Ｂが間隙長手方向（Ｙ方向）に変動した場合には、連結杆を軸止している少なくとも一方の移動部材とガイドレールとが互いに自在に移動（スライド）し合って変動を吸収し、補助杆を軸止している場合は、少なくともいずれか一方の移動部材、補助移動部材とガイドレール、補助ガイドレールとが互いに自在に移動し合って変動を吸収し、間隙カバー板も端部カバー板に対して相対的にスライドするので、上記同様に変動を吸収し得る。
Ｘ，Ｙ方向を含む平面上のあらゆる変動にも上記の複合作用によって追従でき、変動を吸収することができる。間隙両側の躯体部分が互いにＺ方向の異なる方向に変動し合うことは通常少なく、またあっても相対的変動幅は少ないので、この変動は各カバー板、各杆、各連結部等のたわみやずれによって吸収することができる。ヒンジ部を設けるなど適当なＺ方向の変動追従構成を採用するのは任意である。
規制杆は、間隙長手方向の躯体変動において、間隙カバー板が一方の躯体乃至端部カバー板と一体的に作用し、他方の躯体乃至端部カバー板に対してスライド自在となるか、或いは両方の躯体乃至端部カバー板に対して均等的にスライド自在となるように作用し得る。
【００１０】
【発明の実施の形態】
以下、本発明の実施例を図面によって説明する。
図１〜６は本発明エキスパンションジョイントの一例を示しており、図１はその裏面図、図２はその断面状態図、図３，４は各連結部の分解斜視図、図５，６は図３，４の部分を図２と同様に示した部分拡大断面図である。
【００１１】
１はガイドレールであって、間隙Ｓ両側の水平状の躯体Ａ，Ｂ（例えば床と床）の間隙側端面部分に間隙長手方向に沿ってそれぞれ固着したＣチャンネル状部材（断面アングル形、Ｌ形、丸筒Ｃ形状その他のガイドレールとして機能し得る適宜形状でよい）とし、このレール１内にスライド或いはころがり自在に装着した移動部材２，補助移動部材３が十分に移動可能な長さを有しており、これら移動部材を保持できるようにＣ形の背面を躯体側に、開口部１ａを間隙Ｓ内方に向けて配設し、アングル部１ｂ（ガイドレールの一部分であってもよく、アングル以外の形状であってもよい）によって躯体側に固着してある。
【００１２】
移動部材２は、ガイドレール１内に移動自在に装着されており、開口部２ａをガイドレール１と同向きとしたＣチャンネル状（前記同様に適宜形状でよい）とし、このレール１内に装着した補助移動部材３が十分に移動可能な長さを有し、かつ開口部形成面の一端部を閉塞面２ｂとし、この閉塞面２ｂから軸止片２ｃを水平状に突設（閉塞面を設けずにＣ形の開口上下面部分或いは背面から突設していてもよい）してある。軸止片２ｃは装着状態においてガイドレール１の開口部１ａから突出しかつ開口部１ａ内を長手方向に自在に移動できるように形成してある。
補助移動部材３は、移動部材２内に移動自在に装着されており、移動部材２と逆向きのＣチャンネル状の短尺体で、Ｃチャンネル形状の背面３ａから軸止片３ｂを水平状に突設してある。軸止片３ｂは装着状態において前記開口部１ａ及び開口部２ａから突出しかつこれら開口部内を長手方向に自在に移動できるように形成してある。なお、補助移動部材３は移動部材２内に装着された部分が、コ字形、角柱体、円柱体、或いはベアリングの如き回転体等でもよい。
【００１３】
４は連結杆であって、躯体Ａ，Ｂに固着されたガイドレール１，１間に亘ると共に、間隙カバー板８と同様に躯体変動で想定される間隙Ｓの最大拡幅状態に対応可能な長さに設定してあり、その両端部を移動部材２の軸止片２ｃに垂直軸によってそれぞれ軸止４ａしてある。なお、軸止片２ｃがその付け根部（図では閉塞面２ｂ）で回転自在となっているか、連結杆４の軸止部を含む先端部が連結杆本体に対して回動自在となっているなどして、連結杆が水平方向に変位可能であれば、上記軸止４ａは垂直軸に限定されるものではない。
また、連結杆４の中央部（２分割点）には後述するように間隙カバー板８を軸止４ｂし、連結杆４の半分づつの各中央部（４分割点）には補助杆５，５の中央部をそれぞれ軸止４ｃ，４ｃしてある。
補助杆５は、連結杆４の略々１／２の長さを有しており、連結杆４に対してＸ状に軸止し、その一端を上記補助移動部材３の軸止片３ｂに上記同様に水平方向に回転自在に軸止５ａし、他端を後述する補助移動部材１０に同様に水平方向に回転自在に軸止５ｂしてある。
【００１４】
一方、躯体Ａ，Ｂの端部表面には固定板６を固着するのが好ましく、固定板６はその一端部を間隙Ｓ内に若干張出状態（または図示しないが張出さない状態）で設置し、この端部を間隙外側方向に若干立ち上げ、または立ち上げた上でさらに折り返すなどして、折返し縁６ａを形成し、この折返し縁６ａの中間部（すなわち軸止部４ｂと間隙幅方向に合致する位置）を後述する規制杆１１が角度変更自在に挿入配置されるように、適度な長さで切欠するかまたは図３に想像線で示すように長孔状にするなどして、受け部６ｂを形成し、上記端部の下面は好ましくはガイドレール１の上面と接合し両面を溶接一体化できるようにし、ガイドレールが安定した固着状態を維持できるようにしてある。
なお、上記ガイドレール１と固定板６とは、アルミ押出材等によって一体の形材として形成することも可能である。
上記折返し縁６ａ上には間隙カバー板８がスライド自在に重なり、さらにその上に端部カバー板７が重なるようになっている。
【００１５】
端部カバー板７は、固定板６と略々同幅、間隙カバー板８と同長の板体で、固定板６と対面し、その間に間隙カバー板８が装着されスライド可能となるように配設し、間隙とは反対側の端部を固定板６に固着してある。
８は間隙カバー板であって、両躯体Ａ，Ｂ上に配設した端部カバー板７，７の間隙幅方向略々半分位置に亘る幅を有した適宜長さの板体としてなり、この裏面の幅中央部に間隙長手方向の補助ガイドレール９，９を固着し、このレール９，９は規制杆１１の軸止部４ｂ付近に規制杆１１が自在に角度変化できるような間隔をおいて形成し、裏面の間隙幅方向外端縁には係止突起８ａを形成してある。補助ガイドレール９は、間隙Ｓの奥方に向かって開口部を有したＣチャンネル状部材であって、連結杆４に対してＸ状に軸止された補助杆５の端部を軸止５ｂした補助移動部材１０が十分に移動可能な長さを有して形成してあり、補助移動部材１０は断面Ｃ形状乃至コ字形状（角柱体、円柱体或いはベアリングの如き回転体等でもよい）を有した短尺部材で、その背面に補助杆５の他端を軸止５ｂしてある。
【００１６】
而して、上記エキスパンションジョイントは、間隙Ｓ両側の躯体Ａ，Ｂ部分の表面を端部カバー板７，７で表装すると共に、両端部カバー板７，７間に間隙カバー板８を配設し、間隙カバー板８の両側部分が躯体Ａ，Ｂと端部カバー板７，７との間にスライド自在に差し込まれた外装状態となっている。また、躯体変動に対する追従構成は、連結杆４に補助杆５，５を軸止し、連結杆４の両端をガイドレール１，１に移動自在に装着した移動部材２，２に軸止すると共に、補助杆５，５の外側端をガイドレール１，１に移動自在に装着した補助移動部材３，３に軸止し、補助杆５の内側端を間隙カバー板８裏面の補助ガイドレール９に移動自在に装着した補助移動部材１０に軸止し、連結杆４の中央部を間隙カバー板８に軸止すると共に、同軸で規制杆１１の中央部を軸止し、規制杆１１は固定板６の受け部６ｂ内に通してある。
【００１７】
従って、例えば、間隙カバー板８の左右両側の半分づつが端部カバー板７，７にそれぞれ重なり合った図１の設置状態から、躯体Ａ，ＢがＸ方向に離反変動して間隙Ｓが拡大した場合には、図７に示すように、斜め状態の連結杆４がガイドレール１に対して直交状態に近づくように変位し、同時に補助杆５，５も同様に変位し、かつ同時に移動部材２，２、補助移動部材３，３と１０，１０が移動し、規制杆１１は自由に受け部６ｂ内でずれる。連結杆４と補助杆５とは互いの軸止部分の側部同士が当接するまで変位可能である。
また、躯体Ａ，ＢがＸ方向に接近して間隙Ｓが縮小した場合には、図８に示すように、図７とは逆方向に作用し、連結杆４と補助杆５とが補助ガイドレール９で略々同一線上に重合状態となるまで変位可能である。
さらに、躯体Ａ，ＢがＹ方向に相対的に平行移動して変動した場合には、図９に示すように、連結杆４を軸止した移動部材２，２、補助杆５を軸止した補助移動部材３，３、及び補助移動部材１０，１０の３部分の内の２乃至３部分と、ガイドレール１乃至補助ガイドレール９とが相対的にスライドして変動を吸収する。この際、規制杆１１も躯体と一体となった固定板６の受け部６ｂに規制されて斜め方向に変位することになる。
【００１８】
躯体Ａ，Ｂの変動は実際にはＸ，Ｙ方向が複合された円状の運動を含むことになり、この場合には上記図７〜９の複合変動となるが、いずれの変動にも簡潔な構成による軸止部分の回転運動と移動部材、補助移動部材の移動運動で滑らかに追従でき、しかも間隙カバー板８が連結杆４と補助杆５の３点で保持されているので、躯体間に安定して位置し続けることができ、間隙Ｓに対してねじれることもない。Ｚ方向（間隙奥行方向で通常は建造物の上下方向）の変動は、間隙両側の躯体部分が互いに異なる変動をする場合に生じるが、通常は躯体両側部分も同時に同様の変動をするものであって、互いに大きく異なる変動をすることはない。このＺ方向の変動は各カバー板、各杆等の長さによるたわみ（変形）や接続部の相対的ずれ等の許容範囲内で吸収されるので問題はない。
【００１９】
また、規制杆１１を設けないでも上記作用は可能であるが、設けることにより、躯体が変動して間隙カバー板８に軸止した規制杆１１が変位（回転）しても、躯体に固定された固定板６の受け部６ｂによって規制杆が位置規制されてずれないので、連続した変動に伴い各部の異なる摩擦抵抗を受けることによって間隙カバー板８が長手一方向へずれて元位置に復帰できなくなることを防止し、適切な被覆状態を維持することができる。
【００２０】
上記エキスパンションジョイントにおける連結杆４と補助杆５をＸ状に軸止した連結構造は、間隙カバー板８が比較的短いものの場合には１本の間隙カバー板の裏面１箇所にのみ形成すればよく、長さのある長尺状のものの場合には両端部付近等適宜２箇所以上に形成することができる。いずれの場合であっても、ガイドレール１と補助ガイドレール９によるスライド構成によって、温度変化等に伴う間隙カバー板８自体の伸縮も吸収することができ、被覆状態を損なわせることがない。
【００２１】
図１０は、上記とは異なる実施形態を示しており、間隙カバー板８と躯体Ｂの端部カバー板７とは、互いにＹ方向にスライド自在であるが、躯体Ａの端部カバー板７は柱Ｐが隣接しているなどの躯体Ａ側の設置環境のために、間隙カバー板８と互いにＹ方向にスライドできない場合のエキスパンションジョイントの一例である。間隙カバー板８と同長の端部カバー板７を躯体Ａ側に配設し、躯体Ｂ側には想定したＹ方向の変動に追従できるに十分な長さの端部カバー板７を配設する。両躯体側にガイドレール１，１を設置し、これに移動部材２，２に軸止した連結杆４を吊設する構成は前記実施例と同様である。規制杆１１は、この間隙カバー板８の中央に軸止４ｂし、この軸止部から躯体Ａの端部カバー板７側の間隙カバー板端に至る長さで配設し、これを挿通する受け部（図示せず）を２箇所に形成して、規制杆１１が間隙カバー板８と躯体Ａの端部カバー板７とに直交状態を維持してＸ方向にスライド自在となるように設置してある。補助ガイドレール９、補助移動部材３，１０、補助杆５は設けていない。従って、間隙カバー板８は、その中央部において連結杆４の中央部と規制杆１１の一端部に軸止され、両側部分を端部カバー板７，７に重なり合わせてある。
【００２２】
上記構成によれば、躯体Ａ，ＢのＸ方向への変動に対しては、前記実施例同様に追従でき、変動を吸収することができる。また、Ｙ方向の変動に対しては、躯体Ａ側の端部カバー板７と間隙カバー板８は、躯体Ａ側に直交状態に規制されているので、躯体Ａと一体的に変動し、躯体Ｂ側の端部カバー板７は、連結杆４によって規制されているので、移動部材２とガイドレール１の移動によって間隙カバー板８と相対的にスライド自在に変動することになり、これらの複合方向への変動にも追従することができる。
【００２３】
図１１は、さらに異なる実施形態の一例を示してある。
このエキスパンションジョイントは、躯体Ａ，Ｂのパラペット天端部分にそれぞれ固定した端部カバー板７，７上に間隙カバー板８を設置して間隙Ｓを被覆するようにした屋根形のエキスパンションジョイントの例である。
両躯体端にはガイドレール１，１を設置し、移動部材２，２をそれぞれ移動自在に装着し、これに連結杆４の両端を軸止４ａし、連結杆４の中央部には軸止４ｂ部を介して規制杆１１を水平に連結し、この規制杆１１の両端に、規制杆の上側に跨がる支持部材１２の両端を連結し、この支持部材１３に間隙カバー板８を被嵌してある。端部カバー板７，７の内端部からは支持脚７ａ，７ａをそれぞれ立設し、この支持脚７ａ，７ａと規制杆１１の左右中間部とを互いにスライド自在に連結６ｃ，６ｄしてある。連結６ｃは、規制杆１１の長手方向に設けた長孔にボルトナットでスライド自在に連結部材１３を止め、この連結部材１３に支持脚７ａの上端を回動自在に連結してなし、連結６ｄは、規制杆１１をスライド自在に受けるガイド部材１４を組合せ、このガイド部材１４に支持脚７ａの上端を回動自在に連結してなしてある。
この作用は前記各実施例の共通構成部分と同様である。
【００２４】
図示しないが、床と壁、屋根と壁の如き水平面と垂直面とを結ぶエキスパンションジョイントとする場合には、間隙カバー板の一端部及び一方の端部カバー板を垂直面に沿う形状とし、その他の部分も垂直面に沿うように構成すればよい。補助杆５は、設置箇所の状況によって設けなくてもエキスパンションジョイントの機能を全うすることができるが、連結杆４に１本の補助杆５を連結すれば、間隙カバー板８のスライドがねじれを起こさずに安定して円滑に行われ、また連結杆４の両側に２本の補助杆５を連結することにより、一層高い安定性を得ることができる。
なお、上記実施例では、移動部材の移動幅をより大きく取るために補助移動部材３をこれよりも長い移動部材２内に移動自在に装着した構成を示したが、いずれも短尺部材として両部材２，３が各別にガイドレール１に直接装着された構成とすることも可能である。
また、規制杆１１は間隙カバー板８の両側に亘るものとして、両躯体側の受け部を通すようにすれば、間隙カバー板８とこの両側の端部カバー板７，７との相対的なスライドを均等的に行わせることができるが、片側の躯体側の受け部にのみ通すように、間隙カバー板８の片幅分にのみ配設することも可能である。
【図面の簡単な説明】
【図１】本発明に係るエキスパンションジョイントの設置状態を間隙奥方から見た裏面図である。
【図２】図１のエキスパンションジョイントの設置状態を一部断面で示した側面図である。
【図３】ガイドレールと移動部材、補助移動部材等の構成を示した分解斜視図である。
【図４】間隙カバー板、補助ガイドレール、補助移動部材等の構成を示した分解斜視図である。
【図５】図３の構成部分の設置状態を一部断面で示した部分側面図である。
【図６】図４の構成部分の設置状態を一部断面で示した部分側面図である。
【図７】図１のエキスパンションジョイントがＸ方向に離反変動した状態を示す正面図である。
【図８】図１のエキスパンションジョイントがＸ方向に接近変動した状態を示す正面図である。
【図９】図１のエキスパンションジョイントがＹ方向に平行移動して変動した状態を示す正面図である。
【図１０】本発明に係る別のエキスパンションジョイントの一例を示し、設置状態を概略状態で示した裏面図である。
【図１１】本発明に係るさらに別のエキスパンションジョイントの一例を示し、設置状態を一部断面で示した側面図である。
【符号の説明】
１ガイドレール
１ａ開口部
１ｂアングル部
２移動部材
２ａ開口部
２ｂ閉塞面
２ｃ軸止片
３補助移動部材
３ａ背面
３ｂ軸止片
４連結杆
４ａ，４ｂ，４ｃ軸止
５補助杆
５ａ，５ｂ軸止
６固定板
６ａ折返し縁
６ｂ受け部
７端部カバー板
８間隙カバー板
８ａ係止突起
９補助ガイドレール
１０補助移動部材
１１規制杆
Ｐ柱
６ｃ，６ｄ連結
７ａ支持脚
１２支持部材
１３連結部材
１４ガイド部材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an expansion joint that closes a gap of a building frame. The casing referred to in the present invention is not limited to the structural casing itself, and is used in a broad sense including various fixing portions on the casing side connecting the expansion joint, such as columns and mounting fixing portions. Such a configuration is included.
[0002]
[Prior art]
An expansion joint having a structure in which an elastically deformable spring is installed over both fixing members fixed to the ends of the housing on both sides of the gap, and the center portion of the cover plate having a width extending between the housings is connected to the center of the spring. Are known. On the other hand, as a structure that does not use a spring, a fixing member having a structure in which the casings are combined in a cross beam shape and can be expanded and contracted in the gap width direction (X direction), and both ends thereof are fixed to the adjacent casings. By changing the angle by rotating the shaft, it is possible to follow the fluctuation in the longitudinal direction of the gap (Y direction), and the cover plates along the surfaces of both ends of the housing are rotated in the crossing direction (Z direction) with the housing surface. An expansion joint having a structure in which a gap cover plate is disposed so that both sides are overlapped with each other by a predetermined width and the center of the gap cover plate and the central portion of the expansion / contraction structure of the reinforcing body are axially connected is known. (Japanese Patent Laid-Open No. 57-201446).
[0003]
[Problems to be solved by the invention]
The structure using the above spring has a problem that the range that can follow the fluctuation of the housing is relatively narrow and cannot cope with the large fluctuation, and the physical strength of the connection is relatively small. There was a risk of leaving. On the other hand, if the hard member is coupled with a screw or the like without using a spring, the risk of detachment can be reduced. In this case, it is preferable that the configuration allows more stable follow-up with respect to a large variation, a configuration in which the cover plate or the like is not distorted (displaced) with the variation, and the configuration itself is simple.
With regard to the latter configuration, a relatively complicated stretch structure is employed, and the allowable range of variation in the X direction is limited to the range of a relatively narrow stretch structure with a girder shape. Since the gap cover plate is connected to the reinforcing body by a single shaft, the gap cover plate may be rotated and distorted due to fluctuating friction. There were some problems.
[0004]
The present invention has been improved, including the above-mentioned problems, can absorb the fluctuation of the housing without using a spring, has a simple structure, and can follow the large fluctuation and reliably absorb the fluctuation. It is intended to provide an expansion joint that does not cause unexpected distortion in the cover plate, and can be applied to gaps between floors and floors, roofs and roofs, floors and walls, roofs and walls, etc. It can be applied even if it is not a seismic isolation structure, and it can fully function as an expansion joint.In particular, it can be applied to gaps in seismic isolation structures where a high damping device is installed between the foundation and the upper structure. To provide expansion joints with even higher effects.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the expansion joint of the present invention has a gap cover plate that covers the gap in the width direction with respect to an end cover plate that has a cover surface that is connected to the case on both sides or one side of the gap and has a cover surface along the case surface. In an expansion joint that covers the housing gap by arranging the ends so as to overlap with each other as appropriate, guide rails having appropriate lengths along the longitudinal direction of the gap are respectively provided on the housing side or the gap cover plate on both sides of the gap. A moving member is attached to both guide rails so as to be movable, and a connecting rod having both ends fixed to each moving member is arranged so as to be in a skewed state between the housings. An intermediate portion of the auxiliary rod is pivoted so that both rods are X-shaped with each other, a movable auxiliary moving member is mounted in the guide rail, and one end of the auxiliary rod is pivoted to this. An auxiliary guide rail in the longitudinal direction of the gap is fixed to the intermediate width portion of the back surface of the gap cover plate, and an auxiliary moving member is attached to the auxiliary guide rail. The other end of the auxiliary rod is fixed to the auxiliary moving member, and the connecting rod intermediate It has the structure which connected the part and the gap | interval cover board through the axial stop state.
The connecting rod may have one auxiliary rod fixed to the shaft, or two auxiliary rods may be fixed to both side portions of the connecting rod.
The connecting rod and the auxiliary rod are both rotatable at least in a direction parallel to the surface of the housing, and both the guide rail and the auxiliary guide rail are movable at least in a direction parallel to the surface of the housing.
[0006]
Further, according to the present invention, in each of the above configurations, a restriction rod having a length extending from the middle portion of the gap cover plate to the end cover plates on both sides or one side is axially fixed to the rear surface middle portion of the gap cover plate. It may have a configuration in which both side portions or one side portion is disposed so as to pass through a receiving portion having a predetermined length formed at a fixed position on the housing side.
The restriction rod is installed together with the gap cover plate so as to be slidable relative to the case in the gap width direction. In the longitudinal direction of the gap, the restriction rod is free from at least one of the case sides or to both the case sides. It is designed to be freely angularly displaceable or slidable.
[0007]
The moving member to be mounted on the guide rail is set to be long, and a slide groove is opened on the side surface so that the auxiliary rod can slide, and the auxiliary moving member is movably mounted inside the moving member. can do.
Further, both the moving member and the auxiliary moving member can be configured to be directly movable in the guide rail.
[0008]
In the expansion joint configured as described above, when the housings A and B change in the gap width direction (X direction), the inclined state of the connecting rod is displaced with respect to the housing gap direction, and the moving members pivoted at both ends are provided. When the guide rod moves along the guide rails and the auxiliary rod is fixed to the connecting rod, the crossing angle of both rods is displaced and at the same time the moving member and the auxiliary moving member are fixed. Moves along the guide rail and follows up.
Since the gap cover plate is connected to the connecting rod through a shaft stop state, the gap cover plate is not distorted by the variation of the casing. When the auxiliary rod is fixed to the shaft, the gap cover plate is integrated with the auxiliary guide rail on which the auxiliary moving member is movably mounted. It continues to be accurately positioned between the end cover plates on both sides, does not deviate from the center, and does not cause a detachment.
[0009]
When the casings A and B change in the longitudinal direction of the gap (Y direction), at least one moving member that fixes the connecting rod and the guide rail move (slide) freely so as to absorb the change. However, when the auxiliary rod is fixed, at least one of the moving members, the auxiliary moving member and the guide rail, and the auxiliary guide rail move freely with each other to absorb fluctuations, and the gap cover plate also ends. Since it slides relatively with respect to the part cover plate, it can absorb the fluctuation as described above.
Any fluctuation on the plane including the X and Y directions can be tracked by the above-mentioned combined action, and the fluctuation can be absorbed. The body parts on both sides of the gap rarely fluctuate in different directions in the Z direction, and even if there are few relative fluctuations, this fluctuation is caused by the deflection of each cover plate, each ridge, each connecting part, etc. Can be absorbed by displacement. It is optional to employ an appropriate variation follow-up configuration in the Z direction, such as providing a hinge portion.
In the case where the restriction rod is changed in the gap longitudinal direction, the gap cover plate acts integrally with one case or the end cover plate, and is slidable with respect to the other case or the end cover plate, or both. It can act so that it can slide evenly with respect to the housing or the end cover plate.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
1 to 6 show an example of an expansion joint according to the present invention, FIG. 1 is a rear view thereof, FIG. 2 is a sectional view thereof, FIGS. 3 and 4 are exploded perspective views of each connecting portion, and FIGS. It is the elements on larger scale which showed the part of 3 and 4 similarly to FIG.
[0011]
Reference numeral 1 denotes a guide rail, which is a C channel member (cross-sectional angle type, L) fixed along the longitudinal direction of the gap on the gap side end surface portions of horizontal frames A and B (for example, floors) on both sides of the gap S. Shape, round cylinder C shape or other suitable shape that can function as a guide rail), and the movable member 2 and the auxiliary moving member 3 that are slidably or slidably mounted in the rail 1 are sufficiently movable. In order to hold these moving members, the C-shaped rear surface is disposed on the housing side, the opening 1a is directed inward of the gap S, and the angle portion 1b (may be a part of the guide rail). It may be in a shape other than an angle).
[0012]
The moving member 2 is movably mounted in the guide rail 1, and has a C channel shape with the opening 2 a in the same direction as the guide rail 1. The auxiliary moving member 3 has a length that can be moved sufficiently, and one end portion of the opening forming surface is a closing surface 2b, and a shaft stopper piece 2c is projected horizontally from the closing surface 2b (the closing surface is It may project from the upper and lower surfaces of the C-shaped opening or from the back without providing it). The shaft stop piece 2c is formed so as to protrude from the opening 1a of the guide rail 1 and to be freely movable in the longitudinal direction within the opening 1a in the mounted state.
The auxiliary moving member 3 is movably mounted in the moving member 2 and is a short C-channel body that is opposite to the moving member 2 and projects the shaft stop piece 3b horizontally from the C-channel back surface 3a. It is set up. The shaft stop piece 3b protrudes from the opening 1a and the opening 2a in the mounted state and is formed so as to be freely movable in the longitudinal direction within these openings. The auxiliary moving member 3 may be a U-shaped, prismatic body, cylindrical body, or a rotating body such as a bearing.
[0013]
Reference numeral 4 denotes a connecting rod, which extends between the guide rails 1 and 1 fixed to the housings A and B, and has a length that can cope with the maximum widened state of the gap S that is assumed by the housing variation similarly to the gap cover plate 8. The both ends are fixed to the shaft stop piece 2c of the moving member 2 by the vertical shaft 4a. In addition, the shaft stop piece 2c is rotatable at its base portion (the closing surface 2b in the figure), or the tip portion including the shaft stop portion of the connecting rod 4 is rotatable with respect to the connecting rod main body. For example, if the connecting rod can be displaced in the horizontal direction, the shaft stopper 4a is not limited to the vertical shaft.
Further, as will be described later, a gap cover plate 8 is pivoted 4b at the central portion (two dividing points) of the connecting rod 4, and each of the central portions (four dividing points) of the connecting rod 4 is divided into auxiliary rods 5,5. The center part of 5 is fixed with shafts 4c and 4c, respectively.
The auxiliary rod 5 has a length approximately half that of the connecting rod 4, and is fixed to the connecting rod 4 in an X shape, and one end of the auxiliary rod 5 is attached to the axial stop piece 3 b of the auxiliary moving member 3. Similarly to the above, a shaft stop 5a is rotatable in the horizontal direction, and the other end is similarly fixed to the auxiliary moving member 10 to be described later so as to be rotatable in the horizontal direction.
[0014]
On the other hand, it is preferable to fix the fixing plate 6 to the end surfaces of the casings A and B, and the fixing plate 6 is installed with one end thereof slightly protruding into the gap S (or not shown but not protruding). Then, the end portion is slightly raised in the outer direction of the gap, or is turned up and then turned back to form a turn-up edge 6a, and an intermediate portion of the turn-up edge 6a (that is, the shaft stop portion 4b and the gap width direction). 3), a restriction rod 11 described later is inserted and arranged so that the angle can be freely changed, or it is notched with an appropriate length, or has a long hole shape as indicated by an imaginary line in FIG. The receiving portion 6b is formed, and the lower surface of the end portion is preferably joined to the upper surface of the guide rail 1 so that both surfaces can be integrated by welding so that the guide rail can be maintained in a stable fixed state.
The guide rail 1 and the fixed plate 6 can be formed as an integral shape member by an aluminum extruded material or the like.
A gap cover plate 8 is slidably overlapped on the folded edge 6a, and an end cover plate 7 is further overlapped thereon.
[0015]
The end cover plate 7 is a plate body having substantially the same width as the fixed plate 6 and the same length as the gap cover plate 8. The end cover plate 7 faces the fixed plate 6, and the gap cover plate 8 is mounted therebetween so that it can slide. The end opposite to the gap is fixed to the fixed plate 6.
Reference numeral 8 denotes a gap cover plate, which is a plate having an appropriate length having a width that extends substantially in the gap width direction of the end cover plates 7 and 7 disposed on both the casings A and B. Auxiliary guide rails 9, 9 in the longitudinal direction of the gap are fixed to the center of the width of the back surface, and the rails 9, 9 are spaced in the vicinity of the shaft stopper 4 b of the restriction rod 11 so that the angle of the restriction rod 11 can be freely changed. A locking projection 8a is formed on the outer edge of the back surface in the gap width direction. The auxiliary guide rail 9 is a C-channel member having an opening toward the back of the gap S, and the end of the auxiliary rod 5 that is axially fixed with respect to the connecting rod 4 is pivoted 5b. The auxiliary moving member 10 is formed to have a sufficiently movable length, and the auxiliary moving member 10 has a C-shaped or U-shaped cross section (a rotating body such as a prism, a cylinder, or a bearing). The other end of the auxiliary rod 5 is fixed to the rear surface of the short member 5b.
[0016]
Thus, the expansion joint has the surfaces of the casings A and B on both sides of the gap S covered by the end cover plates 7 and 7, and the gap cover plate 8 is disposed between the end cover plates 7 and 7. The both sides of the gap cover plate 8 are in an exterior state in which they are slidably inserted between the casings A and B and the end cover plates 7 and 7. In addition, the follow-up configuration with respect to the variation in the housing is such that the auxiliary rods 5 and 5 are fixed to the connecting rod 4 and both ends of the connecting rod 4 are fixed to the moving members 2 and 2 that are movably mounted on the guide rails 1 and 1. The outer ends of the auxiliary rods 5 and 5 are fixed to the auxiliary moving members 3 and 3 that are movably mounted on the guide rails 1 and 1, and the inner ends of the auxiliary rods 5 are attached to the auxiliary guide rail 9 on the back surface of the gap cover plate 8. It is fixed to the auxiliary moving member 10 that is movably mounted, the central portion of the connecting rod 4 is fixed to the gap cover plate 8, and the central portion of the restricting rod 11 is coaxially fixed, and the restricting rod 11 is a fixed plate. 6 is passed through the receiving portion 6b.
[0017]
Therefore, for example, from the installation state of FIG. 1 in which the left and right halves of the gap cover plate 8 overlap the end cover plates 7 and 7, respectively, the housings A and B are moved away in the X direction and the gap S is enlarged. In this case, as shown in FIG. 7, the connecting rod 4 in the oblique state is displaced so as to approach the orthogonal state with respect to the guide rail 1, and at the same time, the auxiliary rods 5, 5 are similarly displaced, and at the same time, the moving member 2. 2, 2 and the auxiliary moving members 3, 3 and 10, 10 move, and the restriction rod 11 is freely displaced in the receiving portion 6b. The connecting rod 4 and the auxiliary rod 5 can be displaced until the side portions of the shaft stopping portions come into contact with each other.
Further, when the housings A and B approach the X direction and the gap S is reduced, as shown in FIG. 8, it acts in the opposite direction to FIG. 7, and the connecting rod 4 and the auxiliary rod 5 are the auxiliary guides. The rail 9 can be displaced until it is in a superposed state substantially on the same line.
Further, when the casings A and B are moved by parallel translation in the Y direction, as shown in FIG. 9, the moving members 2 and 2 that fixedly connect the connecting rod 4 and the auxiliary rod 5 are fixed. Of the three portions of the auxiliary moving members 3 and 3 and the auxiliary moving members 10 and 10, the guide rails 1 to 9 and the guide rails 1 to 9 slide relatively to absorb fluctuations. At this time, the regulation rod 11 is also regulated by the receiving portion 6b of the fixed plate 6 integrated with the housing and displaced in an oblique direction.
[0018]
The fluctuations of the casings A and B actually include a circular motion in which the X and Y directions are combined. In this case, the fluctuations are the combined fluctuations shown in FIGS. Since it can be smoothly followed by the rotational movement of the shaft stop portion and the moving movement of the moving member and auxiliary moving member, and the gap cover plate 8 is held at the three points of the connecting rod 4 and auxiliary rod 5, Therefore, the gap S is not twisted. The fluctuation in the Z direction (usually the vertical direction of the building in the gap depth direction) occurs when the chassis parts on both sides of the gap are different from each other. Therefore, they do not fluctuate greatly from each other. This variation in the Z direction is not a problem because it is absorbed within an allowable range such as a deflection (deformation) due to the length of each cover plate, each ridge, etc., and a relative displacement of the connecting portion.
[0019]
Further, the above-described operation can be performed without providing the restriction rod 11, but by providing the restriction rod 11, even when the restriction rod 11 pivoted on the gap cover plate 8 is displaced (rotated) due to fluctuation of the rod body, it is fixed to the case. Since the restriction rod is regulated by the receiving portion 6b of the fixed plate 6 and is not displaced, the gap cover plate 8 can be displaced in one longitudinal direction and returned to the original position by receiving different frictional resistance of each portion with continuous fluctuation. It is possible to prevent disappearance and maintain an appropriate covering state.
[0020]
The connecting structure in which the connecting rod 4 and the auxiliary rod 5 in the expansion joint are axially fixed may be formed only at one place on the back surface of one gap cover plate when the gap cover plate 8 is relatively short. In the case of a long and long one, it can be formed in two or more places as appropriate, such as near both ends. In any case, the sliding configuration by the guide rail 1 and the auxiliary guide rail 9 can absorb the expansion and contraction of the gap cover plate 8 itself accompanying the temperature change and the like, and the covering state is not impaired.
[0021]
FIG. 10 shows an embodiment different from the above. The gap cover plate 8 and the end cover plate 7 of the housing B are slidable in the Y direction, but the end cover plate 7 of the housing A is This is an example of an expansion joint in a case where it cannot slide in the Y direction with respect to the gap cover plate 8 because of the installation environment on the side of the housing A such as the columns P are adjacent to each other. An end cover plate 7 having the same length as the gap cover plate 8 is disposed on the housing A side, and an end cover plate 7 having a length sufficient to follow the assumed fluctuation in the Y direction is disposed on the housing B side. To do. The structure in which the guide rails 1 and 1 are installed on both housing sides and the connecting rod 4 that is fixed to the moving members 2 and 2 is suspended from the guide rails 1 and 2 is the same as that of the above embodiment. The restriction rod 11 is fixed to the center of the gap cover plate 8 by a shaft 4b, and is disposed with a length extending from the shaft stop portion to the end of the gap cover plate 7 on the end cover plate 7 side of the housing A, and is inserted therethrough. A receiving portion (not shown) is formed in two places, and the restriction rod 11 is installed so as to be slidable in the X direction while maintaining the orthogonal state between the gap cover plate 8 and the end cover plate 7 of the casing A. It is. The auxiliary guide rail 9, the auxiliary moving members 3 and 10, and the auxiliary rod 5 are not provided. Therefore, the gap cover plate 8 is pivotally fixed to the central portion of the connecting rod 4 and one end portion of the restricting rod 11 at the central portion, and both side portions are overlapped with the end cover plates 7 and 7.
[0022]
According to the said structure, it can track with respect to the fluctuation | variation to the X direction of the housings A and B like the said Example, and can absorb a fluctuation | variation. Further, the end cover plate 7 and the gap cover plate 8 on the case A side are regulated to be orthogonal to the case A side with respect to fluctuations in the Y direction, and thus change integrally with the case A. Since the end cover plate 7 on the B side is regulated by the connecting rod 4, the movement of the moving member 2 and the guide rail 1 causes the slidable movement relative to the gap cover plate 8, and these composites. It can also follow changes in direction.
[0023]
FIG. 11 shows an example of a further different embodiment.
This expansion joint is an example of a roof-shaped expansion joint in which a gap cover plate 8 is installed on end cover plates 7 and 7 fixed to the parapet top ends of the casings A and B so as to cover the gap S. It is.
Guide rails 1 and 1 are installed at the ends of both housings, and moving members 2 and 2 are movably mounted. Both ends of the connecting rod 4 are fixed to the shaft 4a. 4b, the restriction rod 11 is connected horizontally, both ends of the restriction rod 11 are connected to both ends of the support member 12 straddling the upper side of the restriction rod, and the gap cover plate 8 is covered with the support member 13. It is fitted. Support legs 7a and 7a are erected from the inner ends of the end cover plates 7 and 7, respectively, and the support legs 7a and 7a and the left and right intermediate portions of the restriction rod 11 are slidably connected to each other 6c and 6d. is there. The connection 6c is configured such that a connection member 13 is slidably fixed to a long hole provided in the longitudinal direction of the restriction rod 11 with a bolt and nut, and the upper end of the support leg 7a is rotatably connected to the connection member 13. The guide member 14 that slidably receives the regulation rod 11 is combined, and the upper end of the support leg 7a is rotatably connected to the guide member 14.
This operation is the same as that of the common components of the above embodiments.
[0024]
Although not shown, in the case of an expansion joint that connects a horizontal surface and a vertical surface such as a floor and a wall, a roof and a wall, one end portion of the gap cover plate and one end cover plate are shaped along the vertical surface, and others The portion may be configured along the vertical plane. Although the auxiliary rod 5 can fulfill the function of the expansion joint even if it is not provided depending on the situation of the installation location, if one auxiliary rod 5 is connected to the connecting rod 4, the slide of the gap cover plate 8 will be twisted. It can be carried out stably and smoothly without being raised, and by connecting the two auxiliary rods 5 on both sides of the connecting rod 4, higher stability can be obtained.
In the above embodiment, the auxiliary moving member 3 is movably mounted in the moving member 2 longer than the moving member 2 in order to increase the moving width of the moving member. It is also possible to adopt a configuration in which 2 and 3 are directly mounted on the guide rail 1 separately.
Further, if the restricting rod 11 extends on both sides of the gap cover plate 8 and passes the receiving portions on both sides of the housing, the gap cover plate 8 and the end cover plates 7 and 7 on both sides are relatively arranged. The sliding can be performed evenly, but it is also possible to dispose only the width of the gap cover plate 8 so as to pass only through the receiving portion on one side of the casing.
[Brief description of the drawings]
FIG. 1 is a rear view of an expansion joint according to the present invention as viewed from the back of a gap.
2 is a side view showing a partial cross-sectional view of an installation state of the expansion joint of FIG. 1. FIG.
FIG. 3 is an exploded perspective view showing configurations of a guide rail, a moving member, an auxiliary moving member, and the like.
FIG. 4 is an exploded perspective view showing configurations of a gap cover plate, an auxiliary guide rail, an auxiliary moving member, and the like.
FIG. 5 is a partial side view showing the installation state of the components shown in FIG. 3 in a partial cross section.
6 is a partial side view showing the installation state of the components shown in FIG. 4 in a partial cross-section.
7 is a front view showing a state in which the expansion joint of FIG. 1 has moved away in the X direction. FIG.
8 is a front view showing a state in which the expansion joint of FIG. 1 has moved close to the X direction.
9 is a front view showing a state in which the expansion joint of FIG. 1 has moved in parallel in the Y direction and fluctuated.
FIG. 10 is a back view showing an example of another expansion joint according to the present invention and showing an installation state in a schematic state.
FIG. 11 is a side view showing an example of still another expansion joint according to the present invention and showing a partially sectioned installation state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Guide rail 1a Opening part 1b Angle part 2 Moving member 2a Opening part 2b Blocking surface 2c Shaft stop piece 3 Auxiliary moving member 3a Back surface 3b Shaft stop piece 4 Connecting rod 4a, 4b, 4c Shaft stop 5 Auxiliary rod 5a, 5b Shaft stop 6 Fixed plate 6a Folding edge 6b Receiving portion 7 End cover plate 8 Gap cover plate 8a Locking protrusion 9 Auxiliary guide rail 10 Auxiliary moving member 11 Restriction rod P Column 6c, 6d Connection 7a Support leg 12 Support member 13 Connection member 14 Guide Element

Claims

By connecting the gap cover plate covering the gap to the end cover plate having the cover surface along the case surface while being connected to the case portion on both sides or one side of the gap, In an expansion joint that covers the housing gap, guide rails with appropriate lengths along the longitudinal direction of the gap are respectively fixed to the housing side or gap cover plate on both sides of the gap, and movable members are mounted on both guide rails to be movable. Each connecting member is provided with a connecting rod having both ends fixed to each other so as to be skewed between the casings, and an intermediate portion of an auxiliary rod having an appropriate length is connected to the connecting rod. Auxiliary moving member is mounted in the guide rail, and one end of the auxiliary rod is fixed to the guide rail, and the auxiliary guide in the longitudinal direction of the gap is formed in the width intermediate portion of the back surface of the gap cover plate. Rail The auxiliary movement member is attached to the auxiliary movement member, and the other end of the auxiliary rod is fixed to the auxiliary movement member, and the intermediate portion of the connecting rod and the gap cover plate are connected to each other through the shaft locking state. Expansion joint.

The expansion joint according to claim 1, wherein one expansion rod is fixed to the connecting rod.

The expansion joint according to claim 1 , wherein the two auxiliary rods are configured to be pivotally fixed to both side portions of the connecting rod.

A restriction rod with a length extending from the middle part of the gap cover plate to both sides or one end cover plate is fixed to the middle part of the back surface of the gap cover plate, and both sides or one side part of the restriction cover is fixed to the housing side. The expansion joint according to any one of claims 1 to 3 , wherein the expansion joint is configured to pass through a receiving portion having a predetermined length formed at a position.

The moving member to be mounted on the guide rail is set to be long, the slide groove is opened on the side surface so that the auxiliary rod can slide, and the auxiliary moving member is movably mounted inside the moving member. The expansion joint in any one of Claims 1-4 .

The expansion joint according to any one of claims 1 to 4 , having a configuration in which the moving member and the auxiliary moving member are mounted so as to be directly movable in the guide rails.