JP3573594B2

JP3573594B2 - Connection device for secondary structure

Info

Publication number: JP3573594B2
Application number: JP14088997A
Authority: JP
Inventors: 誠笹本
Original assignee: 所沢軽合金株式会社
Priority date: 1997-05-14
Filing date: 1997-05-14
Publication date: 2004-10-06
Anticipated expiration: 2017-05-14
Also published as: JPH10317472A

Description

【０００１】
【発明の属する技術分野】
本発明は、地下道、下水道等地下に埋設する筐体や橋梁桁などのコンクリート構造物等の二次製品（以下「二次構造物」という）同士を付き合わせて接続するための二次構造物の接続装置に関するものである。
【０００２】
【従来の技術】
従来からプレハブ化して成る二次的なコンクリート製品等の、所謂二次構造物同士を、その端面同士を付き合わせて接続する接続装置として、例えば所定長さの軸棒の両端に外方に広がる弾性を持たせた切り込み溝を設けたピン型結着具を形成し、この両端部を単にそれぞれ対向する二次構造物の端面に形設した雌孔部に嵌入して結着する構造のもの（実開昭５９−１９４４１１号参照）や、対向する二次構造物の端面に、それぞれ内部に膨出した段差部を形成し、一端側が閉塞された筒条受部材を埋設し、一方の筒条受部材に先端に係合頭部を形成した軸型連結部材の基部を螺合し、この連結部材の先端部を対向する筒条受部材に差し込んで係合頭部を上記段差部に係合させる構造のもの（特公昭６３−１２９８４号参照）等が提案されている。
【０００３】
【発明が解決しようとする課題】
しかし、前者のピン型結着具のように、先端を二つ割りとし、少し広げて弾性を持たせたピン構造のものでは、受け穴に対する雌雄嵌合が面倒であり、かつ嵌挿後の係止を切り込み溝で広げた弾撥力によって圧接するだけでは、緩み易く、また抜け出る恐れがある。また、後者の接続具にあっては、係合手段が軸先端に形成した係合頭部で筒条受部材の段差部に係止する一種の爪係合を採用しているが、この係合爪付きタイプでも基本的には前者同様に先端部にすり割りを入れて弾撥を持たせるだけの構成であるため、どうしても突出する爪先が小さくなり、抜け外れる恐れがある。しかも、連結部自体は細軸構成となっているため、破断し易く、大型のコンクリート製品等、大型の二次構造物の接続具に適さないばかりでなく、二次構造物の形状によっては、連結部の外径の小型化と共に、強度の向上が要求されるものであるが、従来の構造によっては逆に外径が大きく成ってしまうという欠点があった。
更に、前記両者の態様の欠点は、対向する接続面に配設する雌固定具、筒条受部材に対して差し込む接続軸部は、溝割りで広げた構造であるため、ピン接合にかなり大きな押圧力を掛けねば差し込むことができず、極めて面倒な作業を必要とし、接続具自体の大型化を余儀なくされ、特に大型のコンクリート製品等、大型の二次構造物態様のものでは容易でなかった。また、接続軸部は先端に二つ割り又は四つ割りを形成して少し広げ弾性を持たせただけの構造では引っ張り力に弱く、抜け易いものであった。
【０００４】
本発明に係る二次構造物の接続装置は、上記問題に鑑みて創案されたものであり、双方の接合面に埋設する筒状の雌型接続体と、雄型接続体にそれぞれ別々のアンカー部材を連結してコンクリート製品に埋設するようにし、且つ雌，雄型接続体の係止をする雄型接続体の爪孔に対する係合爪の嵌合係止によって行うようにして、上記課題を解決する二次構造物の接続装置を提供することを目的としたものである。
【０００５】
【課題を解決するための手段】
上記目的を達成するために、本発明に係る二次構造物の接続装置は、対向するコンクリート製品等の二次構造物同士を面接触で接続する二次構造物に埋設する接続装置において、前部に接続用の略等径の嵌合筒孔を形成すると共に、後部にアンカー用ネジ孔を設け、外周には円周方向へ廻り、かつ前後方向へ所定間隔をおいて位置をずらせた２条の第一及び第二凹溝を形成すると共に、上記嵌合筒孔の内周に垂直方向、及びこれと略直交する水平方向位置において対向する一対ずつの爪孔をそれぞれ上記各凹溝内に開口するように穿設し、この爪孔にそれぞれ係合爪を嵌め込んだ後、それぞれの外側から上記各凹溝内に弾性体を介装し、かつ少なくとも上記弾性体の外側には外筒を巻装して成る筒状の雌型接続体と、上記雌型接続体に構成した係合爪位置に対応して嵌合軸体の外周にリング状に２条の第一及び第二爪受段溝を形成し、上記嵌合筒軸の挿入側先端及び各爪受段溝の挿入方向後部周縁に案内テーパーを形成し、かつ後部にアンカー用ネジ孔を設けて成ることを要旨とするものである。
このような構成により、雄型接続体を単に雌型接続体に小さな押圧力で挿入嵌合させるだけで強固に一体化することができ、完全抜け止め作用を奏する。
【０００６】
上記各第一凹溝と第二凹溝、及び第一爪受段溝と第二爪受段溝との各形成間隔は、各凹溝又は爪受段溝の形成幅と略等しく形成して成るものであり、雌型接続体の嵌合筒孔に対する雄型接続体の嵌合軸体の雌雄結合動作が、第一側と第二側とで同時に動作するように構成してあり、結合動作を最小限、少なくとも２ストロークの動作で完了するように構成してある。
【０００７】
上記係合爪の頭部には挿入時における押入力を軽減するため、雄型接続体側に形成した案内テーパーに対向する案内テーパーが形成してあり、上記爪受段溝の挿入方向後部に形成した案内テーパーとの間で案内テーパー同士が傾斜係合するようになるため、挿入方向、即ち雄型接続体の嵌合軸体の進入方向に対して小さな押入力で雌型接続体に嵌合させることが可能になる。
【０００８】
また、上記弾性体は、上記爪孔の外周にリング状に条設した第一及び第二凹溝にそれぞれ充填したウレタンタール系軟質充填材等の耐蝕性合成樹脂又は耐蝕性ゴム等の耐蝕性クッションによって構成してあるため耐水性に優れ、腐食や耐蝕性がよく、かつ爪孔内部雌型接続体内への浸水防止効果が大きい。
【０００９】
更に、上記弾性体は、耐食性バネ鋼で形成した板状部材で形成することも可能であり、雌型接続体側から雄型接続体側への押圧力をより強大に構成することもできる。
【００１０】
アンカー部材は、後端部にフック部を形成してなるボルト体で構成することもできる。
【００１１】
上記の如く、コンクリートブロック等の二次構造物同士を接続する接続装置は、二次構造物自体の形成時に、その一側端面には、後部にアンカー部材を一体化した雌型接続体を、また同他側端面には、アンカー部材を後部に一体化した雄型接続体を埋設する構造とし、対向する二次構造物同士の接続作業時に、各端面に臨む上記雌型接続体と雄型接続体の位置決めをし、一方の二次構造物を他方の二次構造物側へ移動すれば、雄型接続体を対向する雌型接続体に雌雄結合させることができると共に、雌型接続体側の第一及び第二凹溝にれそれぞれ構成した一対ずつの係合爪が、雄型接続体の嵌合軸体の先端部が通過するときは、一旦弾性体の押圧力に抗して該嵌合軸体の外径部を通過させる程度に雌型接続体の爪孔内へ没入後退し、更に嵌合軸体が雌型接続体の嵌合筒孔内へ侵入し、係合爪が嵌合軸体の外周に形成した第一及び第二の爪受段溝の形成部に達すると各係合爪が各爪受段溝内に弾性体の復帰押圧力で進出嵌合し、両者の完全な雌雄結合状態を完了させる。
【００１２】
本発明においては、垂直方向又は水平方向へ一対となる二組の係合爪を雌型接続体の内周に位置をかえて雄型接続体の嵌合軸体を侵入嵌合させるに際して順次雌雄係合を生じさせ、雄型接続体の外周を上下及び左右方向から同時に支持する構造に成っているため、雌型接続体と雄型接続体の軸線が完全に一致し、偏心荷重が発生し難い構造に成っている。
【００１３】
しかも、接続された二次構造物の両端面に臨む雌型接続体と雄型接続体は、それぞれ後端に所定長さのアンカー部材を一体に連結しているため、引っ張り力に耐え得る構造に成っている。また、二次構造物の片側端面に対し突起物となる雄型接続体は、必要によって接続作業前までアンカー部材に対し逆螺合で離反した状態としておけば、二次構造物の周囲には何等の突起物もなく、運搬、格納等の取扱いも容易となる。
【００１４】
【発明の実施の形態】
以下、図面に従って本発明に係る二次構造物の接続装置の実施の形態を説明する。
【００１５】
図１乃至図６に基づいて、雌型接続体側に構成する係合爪を押圧支持する弾性体として弾力性を有する耐蝕性合成樹脂又は耐蝕性ゴム等の耐蝕性クッション材で構成した二次構造物の接続装置に関する第一の実施の形態を説明する。
【００１６】
図１に示すように、雌型接続体１は、筒条に形成されており、軸心部Ｃに前方へ開口し、外開口部が略同径に内側へ穿設された嵌合筒孔２を具備し、かつこの嵌合筒孔２に連通して後方へ開口するアンカー用ネジ孔３を螺設し、上記雌型接続体１の外周には、その円周方向に並列する２条の第一凹溝４と第二凹溝５を形成する。これら第一及び第二凹溝４，５は、各凹溝４，５の溝幅Ｗ１と同幅の間隔Ｗ２（Ｗ１＝Ｗ２）を置いて形成したものであり、一方の第一凹溝４（嵌合筒孔の奥側）内には図中水平方向に垂直方向に対置する一対の爪孔６，６が嵌合筒孔２から外周に向かって貫通しており、また他方の第二凹溝５（嵌合筒孔２の入口側）内には図中垂直方向に対置する一対の爪孔７，７を同じく嵌合筒孔２から外周に向かって貫通させてある。上記各爪孔６，７には、それぞれ係合爪８を嵌め込んで固定するものであり、後述する係合爪８の爪部９の形状に対応して円形又は角形等適宜形状に形成されている。これらの係合爪８，８…は、前後方向かち視認した場合、雌型接続体１の外周から略４５°の開角を形成しながら四方から嵌合筒孔２内に進出する構造になっており、各爪部９，９…が後述する雄型接続体１０に係合して、雌型接続体１に対する雄型接続体１０の軸心を安定させ、荷重方向を常時軸心部Ｃ方向に一致させて安定した雌雄結合作用を奏することができるように構成してある。
【００１７】
また雄型接続体１０は、図４に示すように、雌型接続体１の嵌合筒孔２内に固定される略円柱状の嵌合軸体１１とその外側方に形成された鍔部１２を具備している。上記嵌合軸体１１の外周には、上記雌型接続体１の外周に形成した２条の第一及び第二凹溝４，５の形成位置に対応する２条の第一爪受段溝１３と第二爪受段溝１４が形設してある。上記第一及び第二爪受段溝１３，１４の雌型接続体１の嵌合筒孔２に対する挿入方向へ向かう後部内縁には、円周方向に廻り、略４５°程度傾斜した案内テーパー１５を形成すると共に、先端部にも上記案内テーパー１５と同形となる挿入案内端１６が形成してある。
【００１８】
これらの案内テーパー１５及び挿入案内端１６は、雄型接続体１０の嵌合軸体１１を雌型接続体１の嵌合筒孔２内に挿入させる場合、これに当接する係合爪８を爪孔６，７に添って上方、即ち雌型接続体１の外周方向へ押し上げる押圧力を発生させるためのものである。
本発明の実施の形態においては、雌型接続体１の嵌合筒孔２に対して雄型接続体９の嵌合軸体１１を挿入させる場合、先ずその先端に形成した挿入案内端１６が雌型接続体１の入口側に構成した第二凹溝５内の係合爪８を嵌合軸体１１が通過し得る程度に、その外径部まで弾性体１７の押圧力に抗して爪孔６，７内上方へ没入後退させ、更に嵌合軸体１１が侵入して先端側に形成した第一爪受段溝１３内に弾性体１７の復帰押圧力で進出嵌合させた後、再びこの第一爪受段溝１３の後部内周縁に形成した案内テーパー１５によって係合爪８を上方へ押し上げて嵌合軸体１１を通過させる。このとき嵌合軸体１１の挿入案内端１６が雌型接続体１の内側に構成した係合爪８を弾性体１７の押圧力に抗して嵌合筒軸１１を通過させ得る程度に上方へ押し上げると同時に、雄型接続体１の先端側に構成した上記第一爪受段溝に形成した案内テーパー１５によって雌型接続体の入口側に構成した係合爪８も弾性体の押圧力に抗して上方へ押し上げられており、嵌合軸体１１が更に侵入すると、対応する第一及び第二凹溝と第一及び第二爪受段溝とが一致した位置で各係合爪８，８…が同時に爪孔６，７内に進出し、その爪部９を各第一及び第二爪受段溝１３，１４に係合させる。即ち、本発明に係る二次構造物の接続装置に構成した各係合爪８，８…は、２ストロークの動作によって完全な雌雄結合が可能に成っている。
【００１９】
上記係合爪８は、雌型接続体１に穿設形成した上記爪孔６，７に嵌合する爪部９と、その上部に雄型接続体１０への雌雄結合前に、雌型接続体１の嵌合筒孔２内への抜け落ちを防止する鍔部１８によって形成したものであり、上記爪部９は、爪孔６，７の形成孔形状に対応して円柱状（図５参照）、又は角柱状（図６参照）に形成されている。また、この係合爪８には、上記の如く、雌型接続体１の嵌合筒孔２内に雄型接続体１０の嵌合軸体１１を挿入させる場合に、各係合爪８，８…を爪孔６，７上部へ没入後退に際して雄型接続体１０側の挿入案内端１６や案内テーパー１５を当接させる案内テーパー１９が形成してある。各係合爪８，８…の没入後退作用は、上記雄型接続体１０側の挿入案内端１６や案内テーパー１５と、係合爪８側に形成した上記案内テーパー１９の傾斜した当接姿勢によってよりスムーズに行われるように成る。
なお、上記係合爪８は、その爪部９が爪孔６，７内で回転したり、外れたりしないようにするため、楕円柱状又は四角柱状に形成することが望ましい。
【００２０】
第一の実施の形態に係る二次構造物の接続装置に使用する弾性体１７は、図２に示すように、第一及び第二凹溝内４，５内に形成した爪孔６，７内に、その上部から係合爪８を挿入し、各凹溝４，５内の外縁に鍔１８を係止させた後、その上部から充填したものであり、一般的には、ウレタンタール系軟質充填材等の耐蝕性合成樹脂又は耐蝕性ゴム等の耐蝕性クッションによって構成されている。この弾性体１７の外周には雌型接続体１から各部材が離脱することを防止する外筒２０が巻装してあり、少なくとも、弾性体１７を構成した部位の外周にはこの外筒２０の外装が必要である。
【００２１】
図７は、上記弾性体１７に関する他の実施の形態を示すものであり、弾性体１７として、単なる充填材の使用に代えて、耐蝕性バネ鋼で形成した板状部材２１を係合爪８の頭部に構成した例を示している。
即ち、本実施の形態に使用する板状部材２１は各係合爪８の頭部を押さえる基部２２と、この基部２２から上記外筒２０との間で係合爪８に弾力性を付与するための一対のバネ脚２３を形成したものである。このような板状部材２１は、耐蝕合金製のバネ鋼によって構成することが望ましい。上記板状部材２１は、常時バネ脚２３，２３によって係合爪を軸心部Ｃ側へ付勢しており、雄型接続体１０の嵌合軸対１１の挿入によってその付勢力に抗して係合爪８を雌型接続体１の外周方向へ押し上げるように成っている。
【００２２】
上記のように構成した雌型接続体１と雄型接続体１０とは、前者の嵌合筒孔２内に後者の嵌合軸体１１を挿入した場合、両者の内周及び外周面間に若干の隙間を生ずるように構成してある。上記隙間は、接続装置の円周方向（図中垂直方向）と軸方向（図中水平方向）へ形成してあり、本発明に係る二次構造物の接続装置を二次構造物に装着した場合、軸方向への隙間Ｓ１は、二次構造物の温度差による伸縮や母体コンクリート公差を調整し、また円周方向への隙間Ｓ２は、雌型接続体１及び雄型接続体１０を二次構造物Ｘ内に装着した場合の設置公差やアンカー部材２４のネジ部２４ａの曲がりを吸収し、両者の軸心部Ｃの偏心の発生を防止するためのものである。一般に転造ボルトの製造に際しては、ネジ部に多少の曲がりを生ずることが多く、これをアンカー部材２４として使用した場合、上記のような隙間Ｓ２によるネジ部２４ａの曲がりの吸収をすることもできる。なお、上記隙間Ｓ１，Ｓ２には二次構造物Ｘに対する装着時にアイガス等の耐蝕性ゴム材を充填することにより雌型接続体１と雄型接続体１０の内部を密封状態とし、内部の金具各部の隙間を完全に被覆してしまうことになるため、耐蝕性を損なうことはない。
【００２３】
次に本発明に係る二次構造物の接続装置の作用を、図８乃至図１１に基いて説明する。
先ずこの接続装置の組み込みに当たっては、コンクリート二次製品等、二次構造物Ｘと成るコンクリートの打設時にその一側端面の所定個所に、図８及び図９に示すようなアンカー部材２４を連結一体化した雌型接続体１を、また他側端面にアンカー部材２４を連結一体化した雄型接続体１０をセットすれば全体として埋設状態と成る。
【００２４】
ここにおいて、順次配列する二次構造物Ｘ群の接続は、一方の二次構造物Ｘの片側端面に位置した雌型接続体１の嵌合筒孔２と他方の二次構造物Ｘの他側端面に臨む雄型接続体１０の嵌合軸体１１を軸心部Ｃ上と成るように配置する。
【００２５】
この後、一方の二次構造物Ｘを適宜手段によって対向する他方の二次構造物Ｘ側に移動させて付き合わせれば、片側に突出した雄型接続体１０の嵌合軸体１１が対向する雌型接続体１の嵌合筒孔２内に挿入嵌合すると共に、嵌合軸体１１の周囲に垂直及び水平方向から突設させた一対ずつの（図示例では４個）の係合爪８，８…が、先ず嵌合軸体１１の挿入案内端１６や各第一及び第二爪受段溝１３，１４に形成した案内テーパー１５によって外形規制を受け、雌型接続体１側に構成した弾性体の弾性力に抗して各爪孔９内に没入後退させながら通過し、雄型接続体１０の鍔１８が雌型接続体１の嵌合筒孔２を塞ぐ位置まで達すると、全ての係合爪８，８…が弾性体１７の復帰弾性力によって嵌合筒孔２内へ押し出し、雄型接続体１０の第一及び第二爪受段溝１３，１４にそれぞれ雌雄結合させる。
【００２６】
即ち、例えば下水道トンネル路の構築等となる方形筐体型コンクリートブロック等の複数の二次構造物Ｘ，Ｘ…群の接続に際しては、一の二次構造物Ｘの片側端面に埋設して臨む雌型接続体１の嵌合筒孔２に他の二次構造物Ｘの他側端面の雄型接続体１２の嵌合軸体１１を対向させる。
【００２７】
次に、一方の二次構造物Ｘに対し他方の二次構造物Ｘを押圧すれば、雌型接続体１の嵌合筒孔２内に雄型接続体１０の突起状態の嵌合軸体１１が差し込まれて雌雄結合する。この雌雄結合と同時に雌型接続体１の第一及び第二凹溝４，５側から係合爪８，８…が雄型接続体１０側の第一及び第二爪受段溝１３，１４内に各係合爪８，８…が爪係合する。この場合係合爪８は、上記の如く侵入方向後部側に内周縁部に上昇動作を容易にする案内テーパー１９が形成してあるため、該案内テーパー１９に掛かる雄型接続体１０の嵌合軸体１１側の第一及び第二爪受段溝１３，１４の案内テーパー１５との傾斜押圧力が上方への押圧力に変換され、係合爪８，８…自体を弾性体１７（板状部材２１）の弾性力に抗して爪孔９内へ少し没入後退させる。かく係合爪８，８…が対応する第一及び第二爪受段溝１３，１４に爪係合した状態で隣接する二次構造物Ｘ，Ｘ同士の結合が完了し、順次二次構造物Ｘを配列して行けばトンネル路等を構築することができる（図１０参照）。
【００２８】
また、図１１に示すように、二次構造物Ｘの片側に配設した雄型接続体１０を、非使用時には奥部に埋設したアンカー部材２４に対し逆螺挿し、ネジ部２４ａに対し抜き去っておけば、二次構造物Ｘに対し突起物がなくなり、格納や運搬作業等の取り扱いが容易となる。このときは、必要に応じてアンカー部材２４のネジ部に雄型接続体１０を螺合して使用状態に準備すればよい。
【００２９】
図１２（ａ）に示すように、アンカー部材２４が異形鉄筋を使用する場合には、二次構造物Ｘの埋設中央部で所定長さ分だけラップさせた態様で使用してもよい。また、図１２（ｂ）に示すように、アンカー部材２４の先端部が二次構造物Ｘの埋設中央部に達する所定長尺物とし、そのＵ状屈曲部２４ｂ部分をラップさせた態様で使用してもよい。
【００３０】
なお、本発明に係る二次構造物の接続装置は、鉄鋼製のみならず、硬質プラスチックやセラミック素材等を用いて構成することができるものであることは勿論であり、所望により適宜材料変更によって対応することかできるものである。また、二次構造物Ｘの形状を、図示にあたって方形について述べたが、丸形、三角形状等の各種形状に対応し得ることは勿論である。
【００３１】
【発明の効果】
本発明に係る二次構造物の接続装置は、上述の如く、前部に接続用の略等径の嵌合筒孔を形成すると共に、後部にアンカー用ネジ孔を設け、外周には円周方向へ廻り、かつ前後方向へ所定間隔をおいて位置をずらせた２条の第一及び第二凹溝を形成すると共に、上記嵌合筒孔の内周に垂直方向、及びこれと略直交する水平方向位置において対向する一対ずつの爪孔をそれぞれ上記各凹溝内に開口するように穿設し、この爪孔にそれぞれ係合爪を嵌め込んだ後、それぞれの外側から前記各凹溝内に弾性体を介装し、かつ少なくとも前記弾性体の外側には外筒を巻装して成る筒状の雌型接続体と、上記雌型接続体に構成した係合爪位置に対応して嵌合軸体の外周にリング状に２条の第一及び第二爪受段溝を形成し、上記嵌合筒軸の挿入側先端及び各爪受段溝の挿入方向後部周縁に案内テーパーを形成し、かつ後部にアンカー用ネジ孔を設けて成る略栓状円柱形状の雄型接続体とによって構成したものであるから、雌雄結合後に簡単には離脱することがない。
【００３２】
また、雌型接続体と雄型接続体の後部にアンカー部材を取り付けることで、二次構造物の成形時に各端面に雌型接続体と雄型接続体をアンカー部材と共に埋設する構造とし、係合爪の爪係止と相俟って抜けを招かない接続を可能にする。しかも接続作業は、雌型接続体の嵌合筒孔に対する雄型接続体嵌合軸体の２ストロークの挿入動作のみで行うことができ、小さな押入力を与えるだけで簡単に大型の二次構造物の接続ができる。
【００３３】
しかも、本実施の形態においては、雌型接続体の第一及び第二凹溝内に構成した構成方向の異なる対向する一対ずつ、合計４個の係合爪による爪係合作用を生じるため、雌型接続体と雄型接続体の接続後の軸心に偏心荷重を生ずることがなく、安定した雌雄結合が得られる。加えて上記のような係合爪の配置、即ち垂直及び水平の４方向から雌型接続体の第一及び第二凹溝側から雄型接続体の第一及び第二爪受段溝側への進退動作によって爪係合を得る構造に成っているため、雄型接続体及び雌型接続体を小径化することが可能であり、二次構造物の接続装置の小型化を図ることができる。
【００３４】
また、雌型接続体は、その外側から、即ち第一及び第二凹溝側から係合爪を挿入すると共に、各弾性体をその外側に装着組み立てる構造になっているため、製造が容易である。したがって、従来の接続装置にあっては、一旦雌雄結合を生じた後に接続装置を分解することは容易ではなく、液体密閉材を使用した接続装置にあっては復活までに長時間を必要としていたが、本発明に係る二次構造物の接続装置によれば、外筒を外すだけで容易に分解し、かつ再使用も容易である等、本発明の実施により得られる効果は極めて大きい。
【図面の簡単な説明】
【図１】本発明に係る二次構造物の接続装置の一実施例を示す雌型接続体と筒状の雄型接続体を雌雄結合した状態を示す説明図であり、（ａ）は正面図、（ｂ）は側面図、（ｃ）は背面図である。
【図２】同じく雌型接続体と雄型接続体を雌雄結合した状態を示すものであり、（ａ）は側断面図、（ｂ）は（ａ）におけるＡ−Ａ線断面図、（ｃ）は同じくＢ−Ｂ線断面図である。
【図３】同じく雌型接続体の部分側断面図である。
【図４】同じく雄型接続体の部分側断面図である。
【図５】同じく係合爪の一の実施形態（円柱状）を示す説明図であり、（ａ）は平面図、（ｂ）は側面図、（ｃ）は正面図である。
【図６】同じく係合爪の他の実施形態（角柱状）を示す説明図であり、（ａ）は平面図、（ｂ）は側面図、（ｃ）は正面図である。
【図７】弾性体として板状部材を用いた他の実施形態を示すものであり、（ａ）は部分側断面図、（ｂ）は（ａ）のＤ−Ｄ線断面図、（ｃ）はＥ−Ｅ線断面図である。
【図８】本発明に係る雌雄各接続体にアンカー部材を螺合接続して、雌雄結合させた状態を示す部分側断面図である。
【図９】アンカー部材の構造を示す側面図である。
【図１０】方形筐体状の二次構造物を順次接続する説明図である。
【図１１】同じく接続状態の説明図である。
【図１２】雌型接続体と雄型接続体に螺合接続するアンカー部材を二次構造物との関係で示すものであり、（ａ）は他の実施形態に係る説明図、（ｂ）は更に他の実施形態に係る説明図である。
【符号の説明】
１雌型接続体
２嵌合筒孔
３アンカー用ネジ孔
４第一凹溝
５第二凹溝
６爪孔（第一側）
７爪孔（第二側）
８係合爪
９爪部
１０雄型接続体
１１嵌合軸体
１２鍔部
１３第一爪受段溝
１４第二爪受段溝
１５案内テーパー
１６挿入案内端
１７弾性体
１８鍔部
１９案内テーパー
２０外筒
２１板状部材
２２基部
２３バネ脚
２４アンカー部材
Ｘ二次構造物[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a secondary structure for connecting and connecting secondary products (hereinafter referred to as “secondary structures”) such as concrete structures such as a casing or a bridge girder buried underground such as an underpass or a sewer. Related to the connection device.
[0002]
[Prior art]
Conventionally, as a connecting device for connecting so-called secondary structures such as secondary concrete products made into a prefabricated structure by joining their end faces to each other, for example, the connecting devices are spread outward at both ends of a shaft rod having a predetermined length. A pin-type tie provided with a notch groove with elasticity is formed, and both ends are simply fitted into female holes formed on the end faces of the opposed secondary structures to be connected. (See Japanese Utility Model Application Laid-Open No. 59-194411) Also, at the end faces of the opposing secondary structures, stepped portions are formed, each of which bulges inward, and a tube receiving member whose one end is closed is buried. The base of a shaft-type connecting member having an engaging head formed at the distal end thereof is screwed to the receiving member, and the distal end of this connecting member is inserted into the opposed cylindrical receiving member to engage the engaging head with the step portion. It has been proposed that the structure be combined (see JP-B-63-12984). That.
[0003]
[Problems to be solved by the invention]
However, in the case of the pin structure with the tip divided into two parts and slightly expanded to give elasticity, such as the former pin-type tie, the fitting of the male and female in the receiving hole is troublesome, and the locking after insertion is performed. By simply pressing against by the elasticity of the groove extended by the notch groove, it is easy to loosen and may come off. Further, in the latter connection tool, a type of claw engagement is employed in which the engagement means is engaged with the stepped portion of the cylindrical strip receiving member by the engagement head formed at the tip of the shaft. Even in the case of the type with a dovetail, basically, as in the former, only the slit is provided at the tip end to provide resilience, so that the protruding toes are inevitably small and may fall off. Moreover, since the connecting portion itself has a thin shaft configuration, it is easily broken and is not suitable for a large-sized secondary structure, such as a large-sized concrete product, and depending on the shape of the secondary structure, Although it is required to improve the strength as well as to reduce the outer diameter of the connecting portion, there is a drawback that the outer diameter becomes larger depending on the conventional structure.
Further, a drawback of the above two embodiments is that the female fixing tool disposed on the opposing connecting surface and the connecting shaft portion to be inserted into the tubular receiving member have a structure that is widened by dividing the groove, so that it is considerably large in pin joining. It could not be inserted without applying the pressing force, requiring extremely troublesome work, necessitating an increase in the size of the connecting device itself, and it was not easy with a large secondary structure such as a large concrete product. . Further, a structure in which the connecting shaft portion is formed by splitting or quadrupling the tip and slightly expanding elasticity is weak in a pulling force and easily pulled out.
[0004]
The connecting device for a secondary structure according to the present invention has been devised in view of the above-described problem, and has a cylindrical female connector buried in both joint surfaces and a separate anchor for the male connector. The above object is achieved by connecting the members so as to be embedded in the concrete product, and by engaging and locking the engaging claws into the claw holes of the male connector for locking the female and male connectors. It is an object of the present invention to provide a secondary structure connecting device to be solved.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a connecting device for a secondary structure according to the present invention is a connecting device that is embedded in a secondary structure that connects facing secondary structures such as concrete products by surface contact. A substantially cylindrical fitting hole for connection is formed in the portion, a screw hole for an anchor is provided in the rear portion, and the outer periphery is turned around in the circumferential direction and shifted at predetermined intervals in the front-rear direction. The first and second concave grooves are formed, and a pair of claw holes that are opposed to each other in a vertical direction on the inner circumference of the fitting cylindrical hole and in a horizontal position substantially orthogonal to the groove are respectively formed in each of the concave grooves. After the engaging claws are respectively fitted into the claw holes, an elastic body is interposed in each of the concave grooves from the outside thereof, and at least outside the elastic body is provided outside the elastic body. A cylindrical female connector formed by winding a cylinder, and the female connector described above. Two first and second claw receiving grooves are formed in a ring shape on the outer periphery of the fitting shaft body corresponding to the engagement claw positions, and the insertion-side tip of the fitting cylinder shaft and each claw receiving groove are formed. The gist of the invention is that a guide taper is formed on a peripheral edge of a rear portion in the insertion direction, and a screw hole for an anchor is provided on a rear portion.
With such a configuration, the male connector can be firmly integrated simply by inserting and fitting the female connector into the female connector with a small pressing force, thereby achieving a complete retaining action.
[0006]
Each of the first concave groove and the second concave groove, and each forming interval between the first claw receiving groove and the second claw receiving groove is formed substantially equal to the forming width of each concave groove or the claw receiving groove. The male and female coupling operation of the fitting shaft of the male connector with respect to the fitting cylindrical hole of the female connector is configured to operate simultaneously on the first side and the second side. The operation is configured to be completed in a minimum of at least two strokes.
[0007]
A guide taper is formed on the head of the engaging claw to oppose the guide taper formed on the male connector side in order to reduce a pushing force at the time of insertion, and is formed at a rear portion of the claw receiving groove in the insertion direction. Since the guide tapers are inclinedly engaged with the guide taper, the female tapers are fitted with a small pressing force in the insertion direction, that is, the approach direction of the fitting shaft of the male connector. It becomes possible to do.
[0008]
Further, the elastic body is made of a corrosion-resistant synthetic resin or a corrosion-resistant rubber or the like such as a urethane-based soft filler filled in the first and second concave grooves provided in a ring shape on the outer periphery of the claw hole, respectively. Since it is constituted by a cushion, it has excellent water resistance, good corrosion and corrosion resistance, and a large effect of preventing water penetration into the female connector inside the claw hole.
[0009]
Further, the elastic body can be formed of a plate-like member made of corrosion-resistant spring steel, and the pressing force from the female connector side to the male connector side can be further increased.
[0010]
The anchor member may be constituted by a bolt body having a hook portion formed at the rear end.
[0011]
As described above, the connection device for connecting the secondary structures such as concrete blocks and the like, at the time of forming the secondary structure itself, on one side end surface, a female connector body integrated with an anchor member at the rear, In addition, the other end face has a structure in which a male connection body with an anchor member integrated in the rear portion is embedded, and when connecting opposing secondary structures, the above-mentioned female connection body and male type face each end face. By positioning the connecting body and moving one secondary structure to the other secondary structure side, the male connecting body can be male-female-coupled to the opposing female connecting body, and the female connecting body side When a pair of engaging claws respectively formed in the first and second concave grooves pass through the distal end of the fitting shaft body of the male connector, the pair of engaging claws temporarily resist the pressing force of the elastic body. Recessed and retracted into the claw hole of the female connector just enough to pass through the outer diameter of the fitting shaft, and further fitted When the body enters the fitting cylinder hole of the female connector and the engaging claws reach the formation portions of the first and second claw receiving step grooves formed on the outer periphery of the fitting shaft, each of the engaging claws is The elastic body is advanced and fitted into each of the claw receiving grooves by the return pressing force of the elastic body, thereby completing a complete male and female coupling state.
[0012]
In the present invention, the two sets of engaging claws in the vertical or horizontal direction are shifted to the inner periphery of the female connector and the male and female connectors are inserted in order to penetrate the male connector. Engagement occurs, and the outer periphery of the male connector is supported at the same time in the vertical and horizontal directions, so that the axes of the female connector and the male connector are completely aligned, and an eccentric load is generated. It has a difficult structure.
[0013]
Moreover, since the female connector and the male connector facing both end faces of the connected secondary structure have an anchor member of a predetermined length integrally connected to their rear ends, respectively, the structure can withstand a pulling force. It consists of In addition, if the male connection body that becomes a protrusion on one end surface of the secondary structure is separated from the anchor member by reverse screwing before the connection work as necessary, the periphery of the secondary structure is There are no protrusions, and handling such as transportation and storage becomes easy.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a connecting device for a secondary structure according to the present invention will be described with reference to the drawings.
[0015]
1 to 6, a secondary structure made of a corrosion-resistant cushioning material such as a corrosion-resistant synthetic resin or a corrosion-resistant rubber having elasticity as an elastic body that presses and supports an engaging claw formed on the female connector side. A first embodiment relating to an object connecting device will be described.
[0016]
As shown in FIG. 1, the female connector 1 is formed in a tubular shape, is opened forward at an axial center portion C, and has an outer opening portion formed inwardly with an outer opening having substantially the same diameter. 2 and a screw hole 3 for an anchor, which communicates with the fitting cylindrical hole 2 and opens rearward, is screwed into the female connector 1. The first groove 4 and the second groove 5 are formed. These first and second concave grooves 4 and 5 are formed with an interval W2 (W1 = W2) having the same width as the groove width W1 of each of the concave grooves 4 and 5, and one of the first concave grooves 4 and 5 is formed. In the (rear side of the fitting cylinder hole), a pair of claw holes 6, 6 which are opposed to each other in the horizontal direction and the vertical direction in the drawing penetrate from the fitting cylinder hole 2 toward the outer periphery, and the other second hole. A pair of claw holes 7, which are vertically opposed in the figure, are also penetrated from the fitting cylinder hole 2 toward the outer periphery in the concave groove 5 (the entrance side of the fitting cylinder hole 2). An engaging claw 8 is fitted into each of the claw holes 6 and 7 and fixed, and is formed into an appropriate shape such as a circle or a square corresponding to the shape of a claw portion 9 of the engaging claw 8 described later. ing. When these engaging claws 8, 8... Are viewed from the front and rear, they have a structure in which the engaging claws 8 enter the fitting cylindrical hole 2 from all sides while forming an opening angle of approximately 45 ° from the outer periphery of the female connector 1. Are engaged with the male connector 10 to be described later to stabilize the axis of the male connector 10 with respect to the female connector 1 so that the load direction is always changed to the axis C. It is configured so as to be able to exhibit a stable male and female binding action by matching the directions.
[0017]
As shown in FIG. 4, the male connector 10 has a substantially cylindrical fitting shaft 11 fixed in the fitting cylinder hole 2 of the female connector 1 and a flange formed outside the fitting shaft 11. 12 are provided. On the outer periphery of the fitting shaft 11, two first claw receiving grooves corresponding to the formation positions of the two first and second concave grooves 4 and 5 formed on the outer periphery of the female connector 1 13 and a second claw receiving groove 14 are formed. At the rear inner edge of the first and second claw receiving grooves 13 and 14 in the insertion direction of the female connector 1 with respect to the fitting cylindrical hole 2, there is provided a guide taper 15 which turns in the circumferential direction and is inclined by about 45 °. And an insertion guide end 16 having the same shape as the above-mentioned guide taper 15 is formed at the distal end.
[0018]
When the fitting shaft 11 of the male connector 10 is inserted into the fitting cylinder hole 2 of the female connector 1, the guide taper 15 and the insertion guide end 16 engage the engaging claw 8 that abuts the fitting shaft 11. This is for generating a pressing force that pushes upward along the claw holes 6 and 7, that is, in the outer circumferential direction of the female connector 1.
In the embodiment of the present invention, when the fitting shaft 11 of the male connector 9 is inserted into the fitting cylinder hole 2 of the female connector 1, first, the insertion guide end 16 formed at the tip thereof is inserted. The outer diameter portion of the female connector 1 is pressed against the pressing force of the elastic body 17 to the outer diameter of the female connector 1 to the extent that the fitting shaft 11 can pass through the engagement claw 8 in the second concave groove 5 formed on the inlet side. After being retracted and retracted upward in the claw holes 6 and 7, the fitting shaft body 11 further enters and is fitted into the first claw receiving groove 13 formed on the distal end side by the return pressing force of the elastic body 17 and fitted. Then, the engaging claw 8 is pushed up again by the guide taper 15 formed on the inner peripheral edge of the rear portion of the first claw receiving groove 13 to pass through the fitting shaft body 11. At this time, the insertion guide end 16 of the fitting shaft 11 is raised upward enough to allow the engaging claw 8 formed inside the female connector 1 to pass through the fitting cylinder shaft 11 against the pressing force of the elastic body 17. At the same time, the engaging claw 8 formed on the entrance side of the female connector by the guide taper 15 formed in the first claw receiving groove formed on the distal end side of the male connector 1 also pushes the elastic body. When the fitting shaft body 11 is further intruded, the engagement claws are located at positions where the corresponding first and second concave grooves coincide with the first and second claw receiving grooves. .. Simultaneously advance into the claw holes 6 and 7 to engage the claw portions 9 with the first and second claw receiving grooves 13 and 14, respectively. That is, each of the engaging claws 8, 8,... Formed in the connecting device for the secondary structure according to the present invention is capable of perfect male and female coupling by a two-stroke operation.
[0019]
The engaging claw 8 is provided with a claw portion 9 formed in the female connection body 1 and fitted in the claw holes 6 and 7, and a female connection on the upper portion thereof before the male and female connection to the male connection body 10. The claw portion 9 is formed by a flange portion 18 for preventing the body 1 from dropping into the fitting cylindrical hole 2. The claw portion 9 has a columnar shape corresponding to the shape of the claw holes 6 and 7 (see FIG. 5). ) Or a prism (see FIG. 6). When the fitting shaft 11 of the male connector 10 is inserted into the fitting cylinder hole 2 of the female connector 1 as described above, each of the engaging claws 8, A guide taper 19 is formed for abutment of the insertion guide end 16 and the guide taper 15 on the male connector 10 side when the. The retracting action of each of the engaging claws 8, 8... Is caused by the inclined abutting posture of the insertion guide end 16 and the guide taper 15 on the male connector 10 side and the guide taper 19 formed on the engaging claw 8 side. Will be performed more smoothly.
The engaging claw 8 is desirably formed in an elliptical or square column shape so that the claw portion 9 does not rotate or come off in the claw holes 6 and 7.
[0020]
As shown in FIG. 2, the elastic body 17 used in the connection device for the secondary structure according to the first embodiment has claw holes 6, 7 formed in the first and second concave grooves 4, 5. After the engaging claw 8 is inserted from the upper part thereof, the flange 18 is engaged with the outer edge of each of the concave grooves 4 and 5, and then the filler is filled from the upper part. It is composed of a corrosion-resistant cushion such as a corrosion-resistant synthetic resin such as a soft filler or a corrosion-resistant rubber. An outer cylinder 20 for preventing each member from being detached from the female connector 1 is wound around the outer periphery of the elastic body 17. Is required.
[0021]
FIG. 7 shows another embodiment of the elastic member 17. Instead of using a simple filler as the elastic member 17, a plate-like member 21 made of corrosion-resistant spring steel is used as the engaging claw 8. The figure shows an example in which the head is configured.
That is, the plate-shaped member 21 used in the present embodiment imparts elasticity to the engaging claw 8 between the base 22 for pressing the head of each engaging claw 8 and the outer cylinder 20 from the base 22. For forming a pair of spring legs 23. Such a plate-like member 21 is desirably made of a corrosion-resistant alloy spring steel. The plate-like member 21 constantly biases the engagement claws toward the axial center portion C by the spring legs 23, 23, and resists the biasing force by the insertion of the fitting shaft pair 11 of the male connector 10. The engagement claws 8 are pushed up in the outer peripheral direction of the female connector 1.
[0022]
The female connector 1 and the male connector 10 configured as described above, when the latter fitting shaft body 11 is inserted into the former fitting cylinder hole 2, between the inner circumference and the outer circumference of both. It is configured to have a slight gap. The gap is formed in the circumferential direction (vertical direction in the figure) and the axial direction (horizontal direction in the figure) of the connecting device, and the connecting device for a secondary structure according to the present invention is mounted on the secondary structure. In this case, the gap S1 in the axial direction adjusts expansion and contraction due to the temperature difference of the secondary structure and the tolerance of the base concrete, and the gap S2 in the circumferential direction connects the female connector 1 and the male connector 10 to each other. This is for absorbing the installation tolerance when mounted in the next structure X and the bending of the screw portion 24a of the anchor member 24, and preventing the eccentricity of the shaft portions C of both. In general, when a rolled bolt is manufactured, the screw portion is often slightly bent. When this is used as the anchor member 24, the bending of the screw portion 24a due to the gap S2 as described above can be absorbed. . The gaps S1 and S2 are filled with a corrosion-resistant rubber material such as eye gas at the time of attachment to the secondary structure X, thereby sealing the interiors of the female connector 1 and the male connector 10 with the inner metal fittings. Since the gaps between the parts are completely covered, the corrosion resistance is not impaired.
[0023]
Next, the operation of the connection device for a secondary structure according to the present invention will be described with reference to FIGS.
First, when the connecting device is incorporated, an anchor member 24 as shown in FIGS. 8 and 9 is connected to a predetermined location on one side end surface of the concrete to be a secondary structure X such as a secondary concrete product when the concrete is cast. If the integrated female connector 1 and the male connector 10 with the anchor member 24 connected and integrated on the other end face are set, the whole will be in a buried state.
[0024]
Here, the connection of the secondary structure X group arranged sequentially is performed by connecting the fitting cylindrical hole 2 of the female connector 1 located on one end surface of one secondary structure X with the other secondary structure X. The fitting shaft 11 of the male connector 10 facing the side end face is arranged so as to be on the shaft center C.
[0025]
Thereafter, if one of the secondary structures X is moved toward the other secondary structure X, which is opposed to the secondary structure X, by appropriate means, the fitting shafts 11 of the male connector 10 projecting to one side are opposed to each other. A pair (four in the illustrated example) of engagement claws are inserted and fitted into the fitting cylinder holes 2 of the female connector 1 and project from the vertical and horizontal directions around the fitting shaft 11. , 8 are first restricted in outer shape by the insertion guide end 16 of the fitting shaft body 11 and the guide taper 15 formed in each of the first and second claw receiving grooves 13, 14. When the flange 18 of the male connector 10 reaches the position where the flange 18 of the male connector 10 closes the fitting cylindrical hole 2 of the female connector 1, it passes through the claw holes 9 while retracting and retreating against the elastic force of the configured elastic body. Are pushed out into the fitting cylinder hole 2 by the return elastic force of the elastic body 17, and the first of the male connector 10 Beauty respectively to the male and female coupled to the second hook 受段 grooves 13,14.
[0026]
That is, when connecting a plurality of secondary structures X, X..., Such as a rectangular casing-type concrete block for constructing a sewer tunnel, etc., a female embedded and facing one end face of one secondary structure X The fitting shaft 11 of the male connector 12 on the other end face of the other secondary structure X is opposed to the fitting cylinder hole 2 of the mold connector 1.
[0027]
Next, when the other secondary structure X is pressed against the one secondary structure X, the fitting shaft body in the projection state of the male connector 10 is inserted into the fitting cylindrical hole 2 of the female connector 1. 11 is inserted and connects male and female. The engaging claws 8, 8... From the first and second concave grooves 4, 5 of the female connector 1 are simultaneously connected to the first and second claw receiving grooves 13, 14 on the male connector 10 at the same time. Are engaged with each other. In this case, since the guide claw 19 for facilitating the ascending operation is formed on the inner peripheral edge portion of the engagement claw 8 on the rear side in the intrusion direction as described above, the fitting of the male connector 10 on the guide taper 19 is performed. The inclined pressing force of the first and second claw receiving grooves 13 and 14 on the shaft body 11 side with the guide taper 15 is converted into an upward pressing force, and the engaging claws 8, 8... The claw hole 9 is slightly retracted and retracted against the elastic force of the member 21). With the engagement claws 8, 8... Engaged with the corresponding first and second claw receiving grooves 13, 14, the joining of the adjacent secondary structures X, X is completed, and the secondary structure is sequentially formed. If the objects X are arranged, a tunnel road or the like can be constructed (see FIG. 10).
[0028]
As shown in FIG. 11, when the male connector 10 disposed on one side of the secondary structure X is not used, the male connector 10 is reversely screwed into the anchor member 24 buried in the back portion, and pulled out from the screw portion 24a. If left, the protrusions are eliminated with respect to the secondary structure X, and handling such as storage and transport work becomes easy. In this case, if necessary, the male connector 10 may be screwed into the screw portion of the anchor member 24 to prepare for use.
[0029]
As shown in FIG. 12A, when the anchor member 24 uses a deformed reinforcing bar, the anchor member 24 may be used in such a manner that the secondary member X is wrapped by a predetermined length at the embedded central portion thereof. Also, as shown in FIG. 12B, the anchor member 24 is used in a state in which the distal end portion has a predetermined length reaching the embedded central portion of the secondary structure X, and the U-shaped bent portion 24b is wrapped. May be.
[0030]
In addition, the connecting device for the secondary structure according to the present invention is not only made of steel, but can be made of a hard plastic or a ceramic material, as a matter of course. It can be handled. In addition, the shape of the secondary structure X has been described as a square in the drawings, but it is needless to say that the secondary structure X can correspond to various shapes such as a round shape and a triangular shape.
[0031]
【The invention's effect】
As described above, the connecting device for a secondary structure according to the present invention has a fitting cylindrical hole having a substantially equal diameter for connection at the front portion, a screw hole for an anchor provided at the rear portion, and a circumferential portion at the outer periphery. The first and second grooves are formed so as to be shifted in the direction and at predetermined intervals in the front-rear direction, and are perpendicular to the inner periphery of the fitting cylinder hole and substantially perpendicular to the inner periphery of the fitting cylinder hole. A pair of claw holes facing each other at the horizontal position are drilled so as to open in the respective recesses, and the engagement claws are fitted into the claw holes, respectively. An elastic body is interposed, and at least an outer cylinder is wound around the outer side of the elastic body. Two first and second claw receiving grooves are formed in a ring shape on the outer periphery of the fitting shaft body, and the insertion-side tip of the fitting cylinder shaft and A guide taper is formed at the rear edge of the claw receiving groove in the insertion direction, and a substantially plug-shaped cylindrical male connector with a screw hole for anchor at the rear. Never leave.
[0032]
Further, by attaching an anchor member to the rear portion of the female connector and the male connector, the female connector and the male connector are buried together with the anchor member on each end face at the time of forming the secondary structure. It enables connection that does not cause disconnection in combination with claw locking of the dowel. In addition, the connection work can be performed only by inserting the male connection body fitting shaft into the fitting cylinder hole of the female connection body in two strokes. You can connect things.
[0033]
Moreover, in the present embodiment, since a pair of engaging claws is generated by a total of four engaging claws, each of which is formed in the first and second concave grooves of the female connector and is opposed to each other in opposite configuration directions. An eccentric load does not occur on the shaft center after the connection between the female connector and the male connector, and a stable male and female connection can be obtained. In addition, the arrangement of the engaging claws as described above, that is, from the first and second concave groove sides of the female connector to the first and second claw receiving groove sides of the male connector from four directions of vertical and horizontal directions. The structure is such that the claw engagement is obtained by the advancing and retreating operation, so that the diameter of the male connector and the female connector can be reduced, and the size of the connection device for the secondary structure can be reduced. .
[0034]
In addition, the female connector has a structure in which the engagement claws are inserted from the outside thereof, that is, from the first and second concave groove sides, and each elastic body is mounted and assembled on the outside thereof. is there. Therefore, in the conventional connection device, it is not easy to disassemble the connection device once the male and female connections are generated, and in the connection device using the liquid sealing material, it takes a long time to recover. However, according to the connection device for a secondary structure according to the present invention, the effects obtained by implementing the present invention are extremely large, such as easy disassembly simply by removing the outer cylinder and easy reuse.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing an embodiment of a connecting device for a secondary structure according to the present invention, in which a female connector and a cylindrical male connector are male and female connected, and FIG. (B) is a side view, and (c) is a rear view.
FIGS. 2A and 2B also show a state in which the female connector and the male connector are bonded together. FIG. 2A is a side sectional view, FIG. 2B is a sectional view taken along line AA in FIG. ) Is a sectional view taken along the line BB.
FIG. 3 is a partial sectional side view of the female connector.
FIG. 4 is a partial side sectional view of the male connector.
FIGS. 5A and 5B are explanatory views showing one embodiment (columnar shape) of the engagement claw, in which FIG. 5A is a plan view, FIG. 5B is a side view, and FIG.
6A and 6B are explanatory views showing another embodiment (square prism) of the engaging claw, in which FIG. 6A is a plan view, FIG. 6B is a side view, and FIG. 6C is a front view.
7A and 7B show another embodiment using a plate-like member as an elastic body, wherein FIG. 7A is a partial side sectional view, FIG. 7B is a sectional view taken along line DD of FIG. Is a sectional view taken along line EE.
FIG. 8 is a partial side sectional view showing a state in which an anchor member is screwed and connected to each of the male and female connectors according to the present invention so as to be male and female.
FIG. 9 is a side view showing the structure of the anchor member.
FIG. 10 is an explanatory diagram for sequentially connecting secondary structures in a square housing shape.
FIG. 11 is an explanatory diagram of a connection state.
12A and 12B show an anchor member that is screw-connected to a female connector and a male connector in relation to a secondary structure, wherein FIG. 12A is an explanatory view according to another embodiment, and FIG. FIG. 11 is an explanatory diagram according to still another embodiment.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 female connector 2 fitting cylinder hole 3 screw hole for anchor 4 first concave groove 5 second concave groove 6 claw hole (first side)
7 claw holes (second side)
Reference Signs List 8 Engaging claw 9 Claw 10 Male connector 11 Fitting shaft 12 Flange 13 First claw receiving groove 14 Second claw receiving groove 15 Guide taper 16 Insertion guide end 17 Elastic body 18 Flange 19 Guide taper Reference Signs List 20 outer cylinder 21 plate-like member 22 base 23 spring leg 24 anchor member X secondary structure

Claims

In a connection device buried in a secondary structure that connects the opposed secondary structures such as concrete products by surface contact,
A substantially uniform diameter fitting cylindrical hole for connection is formed in the front part, an anchor screw hole is provided in the rear part, and the outer circumference is turned in the circumferential direction and shifted at predetermined intervals in the front and rear direction. Two first and second grooves are formed, and a pair of claw holes facing each other at a horizontal position substantially perpendicular to the inner circumference of the fitting cylindrical hole and substantially perpendicular thereto are respectively formed in the respective grooves. After the engagement claws are respectively fitted into the claw holes, an elastic body is interposed in each of the concave grooves from the outside thereof, and at least the elastic body is provided outside the elastic body. A cylindrical female connector formed by winding an outer cylinder;
Two first and second claw receiving grooves are formed in a ring shape on the outer periphery of the fitting shaft corresponding to the engagement claw positions formed on the female connection body, and the insertion side of the fitting cylinder shaft is formed. A secondary plug comprising a substantially plug-shaped cylindrical male connector having a guide taper formed at the distal end and a rear peripheral edge of each claw receiving groove in the insertion direction, and a screw hole for an anchor provided at a rear portion. Structure connection device.

The first groove and the second groove, and each forming interval between the first claw receiving groove and the second claw receiving groove are formed substantially equal to the forming width of each concave groove or the claw receiving groove. The connecting device for a secondary structure according to claim 1.

2. The connection device for a secondary structure according to claim 1, wherein a guide taper is formed on a head of the engagement claw so as to oppose the guide taper on the male connector side to reduce a pushing force at the time of insertion.

The elastic body is a corrosion-resistant cushion made of a corrosion-resistant synthetic resin such as a urethane tar-based soft filler or a corrosion-resistant rubber filled in first and second grooves formed in a ring shape on the outer periphery of the claw hole. The connecting device for a secondary structure according to claim 1, wherein :

The connecting device for a secondary structure according to claim 1, wherein the elastic body is a plate-shaped member formed of corrosion-resistant spring steel.

The connection device for a secondary structure according to claim 1, wherein the anchor member is a bolt body having a hook portion formed at a rear end portion.