JP3753467B2

JP3753467B2 - Connecting device

Info

Publication number: JP3753467B2
Application number: JP12545996A
Authority: JP
Inventors: 勝彦向野; 和則辻本; 彰一吉野; 英樹東原; 勝治和田
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 1995-09-28
Filing date: 1996-05-21
Publication date: 2006-03-08
Anticipated expiration: 2016-05-21
Also published as: JPH09151697A

Description

【０００１】
【発明の属する技術分野】
本発明は、第１被連結部材にオス部を設け、第２被連結部材に前記オス部が入込み可能なメス部を設けて、前記オス部を前記メス部に挿入することにより、前記第１被連結部材および前記第２被連結部材を互いに連結自在に構成し、前記オス部が前記メス部に挿入されるに伴って、前記オス部が前記メス部から抜け出るのを阻止する連結機構を、前記オス部と前記メス部とに亘って設けてある連結装置に関する。
【０００２】
【従来の技術】
従来、この種の連結装置は、例えば、トンネルを形成するシールドセグメントどうしを連結するのに用いる。
即ち、既に設置された一方のセグメントに設けたメス部に対し、新たに連結する他方のセグメントに設けたオス部を挿入する。その際、前記オス部と前記メス部とに亘って設けられた連結機構によって前記オス部と前記メス部とが係合することにより、前記オス部と前記メス部とが連結固定されるのである。
【０００３】
【発明が解決しようとする課題】
しかし、上記従来の連結装置によれば次のような問題があった。
即ち、連結部には、通常、何らかの外力が作用するが、トンネルを構成するセグメント間の連結部には、トンネル軸芯に垂直な方向に大きな剪断力が作用する場合がある。従来の連結装置のごとく、単にオス部をメス部に挿入固定しただけのものでは、前記オス部のみで前記剪断力を負担しなければならない。
しかし、前記オス部には、前記メス部と係合するための可動部を有する場合もあり、前記オス部のみをもって前記剪断力に対して強固に対抗することは困難な場合があった。
さらに、前記連結装置を備えたセグメント等の搬送性・取扱性も劣っていた。前記オス部は、何らの保護手段もなく突出した状態で一方のセグメントに取付けられていたから、セグメントの輸送中などに誤ってオス部を他物に接触させるおそれがあり、その場合には、前記オス部が変形して使用不可能になる。
【０００４】
本発明の目的は、このような従来技術の欠点を解消し、十分な連結部強度を有しながら、搬送性・取扱性に優れた連結装置を提供することにある。
【０００５】
【課題を解決するための手段】
（構成１）
この目的を達成するための本発明の特徴構成は、請求項１に記載したごとく、前記第１被連結部材に形成した凹部本体内に前記オス部を引退した状態で配設することにより、前記凹部本体の内周壁を前記オス部の周囲を取囲む囲繞部として構成し、前記凹部本体と係合可能な凸部本体が、その最大外径部を前記第２被連結部材に嵌入させた状態で、前記第２被連結部材に取付けてあり、前記メス部を前記凸部本体の内部に設け、前記凸部本体の先端外周部を先細状に形成し、前記凸部本体を前記凹部本体内に係合させて前記オス部を前記メス部に挿入する際、前記囲繞部が前記凸部本体の外面をガイドし得る点にある。
（作用・効果）
本構成の連結装置によれば、前記オス部の周囲を取囲む囲繞部に前記メス部の外周部（凸部本体）が挿入されることとなる。よって、例えば、連結部に剪断力が作用した場合、従来の連結装置のごとく、オス部自身のみが剪断力に抵抗する構成ではなく、オス部に外嵌するメス部の外面と前記囲繞部の内面との間で剪断力に抵抗するものとなる。このため、オス部の断面積に対してより広い断面積をもって前記剪断力に抵抗することができるため、連結部の強度を向上させることができる。
さらに、本構成の連結装置は、前記第１被連結部材を単に凹状に形成して前記囲繞部を形成した中に前記オス部を引退させて配置する一方、前記第２被連結部材に凸状部分を形成して、その内部に前記メス部を形成するものであり、前記囲繞部を極めて簡単に構成できる。
また、変形しやすい前記オス部が囲繞部によって保護されるから、連結前に誤って他物に接触させたとしてもオス部が変形する機会は少なくなって、前記オス部の保護を確実に行うことができ、前記第１・第２被連結部材の搬入性・取扱性が向上する。
さらに、前記メス部の先端外周面を先細状に形成してあるから、前記凹部本体への前記メス部の挿入が非常に容易となる。
その上、連結部に作用する剪断力に抵抗するのは、前記メス部が形成されている前記凸部本体であるが、当該凸部本体を前記第２被連結部材に埋め込んだ状態に設けることで、前記凸部本体のうち最大断面積を有する部位をもって剪断力に抵抗させることができ、連結部の強度をさらに向上させることができる。
【０００８】
（構成２）
本発明の連結装置における前記連結機構は、請求項２に記載したごとく、前記オス部を略筒形状に形成すると共に、前記オス部が前記メス部に挿入されるに伴って、前記オス部の先端部が拡径される拡径機構を設け、拡径された前記オス部の外面と当接して、前記オス部が前記メス部から抜け出るのを阻止する抜止部を前記メス部に設けて構成することができる。
（作用・効果）
本構成であれば、前記第１被連結部材と前記第２被連結部材とを押圧するだけで両者を連結させることができる。よって、前記第１被連結部材と前記第２被連結部材との連結作業を非常に効率的に行うことができる。
【０００９】
（構成３）
本発明の連結装置は、請求項３に記載したごとく、前記オス部が、当該オス部を拡径可能な芯部材を有しており、前記オス部が前記メス部に挿入した状態で、前記芯部材を前記オス部の内部に引込み操作自在な引込機構を前記オス部に設けるように構成することができる。
（作用・効果）
本構成によれば、第１被連結部材と第２被連結部材とを押圧連結させた初期状態で仮にガタが存在していても、当該引込機構を操作して前記オス部を更に拡径させ、前記メス部との当接力を高めることで、初期連結状態を適切に設定することができる。
さらに、連結後、連結部に外力が作用することにより、あるいは、前記オス部等が径年変形することなどによって連結状態が緩んだ場合にも、当該引込機構を操作し、前記オス部をさらに拡径させて前記オス部と前記メス部との連結状態を回復させることができる。
【００１０】
（構成４）
さらに、本発明に係る連結装置の前記連結機構は、請求項４に記載したごとく、前記オス部が嵌入自在な嵌入空間を形成するチャック部材を、前記オス部の嵌入方向に移動自在に前記メス部内に配置し、周方向に複数個に分割すると共に、前記チャック部材を前記オス部に対する入口側に付勢する付勢部材を設け、前記メス部の内周を、前記入口側程小径となるメス側カム面に形成すると共に、前記チャック部材の外側面を前記メス側カム面に対する外側カム面に形成し、前記オス部の周側壁部に、基端側ほど小径の基端側傾斜部が設けられており、この基端側傾斜部が前記チャック部材の内側カム面と摺接・係合可能となるよう構成することができる。
（作用・効果）
本構成の連結機構によっても、請求項２の連結機構と同様に、前記第１被連結部材と前記第２被連結部材とを押圧するだけで両者を連結させることができ、前記第１被連結部材と前記第２被連結部材との連結作業が効率的に行える。
しかも、本構成であれば、前記メス部に比べて他物と接触し易い前記オス部側には一切作動部分を有しないから、不測の事故によって前記連結機構の機能が損なわれるという事態の発生を低減することができる。
【００１１】
【発明の実施の形態】
以下に本発明の実施例を図面に基づいて説明する。
本発明の連結装置は、例えば、トンネル等を構築する際に用いられるダクタイルセグメントやスチールセグメント、あるいは、コンクリートセグメント（これらを総称して「セグメント」という）を多数連結する場合などに用いる。
【００１２】
（概要）
本発明の連結装置は、例えば図１から図４に示すごとく、第１被連結部材Ａである第１セグメント１にオス部３を設け、第２被連結部材Ｂであって既に設置されている第２セグメント２には、前記オス部３が入込み可能なメス部４を設けて構成してある。
前記第１セグメント１と前記第２セグメント２とを連結する際には、両者を押し付けて前記オス部３を前記メス部４内に挿入させ、前記オス部３と前記メス部４とに亘って設けた連結機構Ｊを用いて両者を係合連結させる。
しかし、前記オス部３および前記メス部４のみによる連結では、連結部の強度が十分であるとはいい難い。つまり、前記連結部には連結方向に垂直な方向の剪断力等が作用することとなるが、前記オス部３のみで当該剪断力に抵抗する構成では、前記オス部３には可動部が形成されていることもあって、前記オス部３が負担しうる剪断力等にはある程度の限界があるからである。
この点を解消すべく、本発明の連結装置においては、前記オス部３を取り囲む状態の囲繞部Ｃを前記第１セグメント１に形成し、一方、前記囲繞部Ｃに挿入自在であって、その内部に前記オス部３と係合可能なメス部４を有する凸部本体５を、前記第２セグメント２に形成している。
即ち、前記第１セグメント１と前記第２セグメント２とを連結するに際し、前記囲繞部Ｃおよび前記凸部本体５に、前記第１セグメント１と前記第２セグメント２とが剪断方向に位置ずれするのを阻止する機能を持たせ、前記オス部３および前記メス部４には、前記第１セグメント１と前記第２セグメント２とが引抜き方向に離間するのを阻止する機能を持たせている。換言すれば、連結部に作用する剪断力は、前記囲繞部Ｃと前記凸部本体５との当接部で負担させ、前記連結部に作用する引張力は、前記オス部３と前記メス部４との係合部で負担させるのである。
【００１３】
さらに、当該連結装置のごとく、前記オス部３を前記囲繞部Ｃで取囲む構成にすれば、前記オス部３の保護としても有効である。
前記オス部３は、前記メス部４と係合するために何らかの可動部を有していることがあり、その場合には、他物との衝突等に対する耐衝撃性は小さくなると考えられる。仮に、前記第１セグメント１の運搬中に前記オス部３を他物に衝突させると、前記オス部３が変形して、その後の連結作業が不可能になるおそれがある。当該連結装置のごとく、前記オス部３の周囲に前記囲繞部Ｃが形成されていれば、前記オス部３が損傷を受ける機会を減らすことができ、前記第１セグメント１等の運搬性・作業性を向上させることができる。
【００１４】
以下、本発明の連結装置に係る第１の実施形態について説明する。
【００１５】
（オス部）
前記オス部３の詳細を以下に示す。
本実施の形態においては、図２に示すごとく、前記第１セグメント１に凹部本体６を形成し、当該凹部本体６の周壁をもって前記囲繞部Ｃを構成している。前記オス部３の先端を確実に保護するため、前記凹部本体６は、前記オス部３の突出長さよりも深く形成してある。
前記オス部３の全体形状は略円筒状を呈する。その一端は、前記メス部４に挿入して拡径する拡径可能部７をなし、他端は、前記第１セグメント１に取付けられる第１取付部８をなす。前記第１取付部８の外面には第１取付ネジ部９が形成してある。
一方、前記凹部本体６の底部１０には第１取付ネジ孔１１を形成してあり、前記第１取付ネジ部９を前記第１取付ネジ孔１１に螺入させることによって、前記オス部３が前記第１セグメント１に取付けられる。
前記第１取付ネジ部９の両端のうち前記拡径可能部７に隣接した位置には、前記オス部３の長手方向に垂直な面であって、前記第１取付部８の方向を向く第１取付面１２が突出形成されている。前記第１取付ネジ孔１１への前記第１取付ネジ部９の螺入は、前記第１取付面１２が、前記底部１０の表面に当接するまで行う。これにより、前記底部１０表面からの前記オス部３の突出長さが決まる。
尚、前記オス部３を前記第１セグメント１に取付けるには、前述のネジ止めの他に、嵌入、溶接など種々の方式を用いることができる。
【００１６】
前記オス部３の拡径可能部７側の先端部には、前記オス部３の内部に嵌入自在な芯部材１３が設けられている。当該芯部材１３は、前記オス部３が、前記メス部４に挿入された際に、前記第１取付ネジ部９の側に押し込まれ、前記拡径可能部７を拡径させるものである。
例えば、図２に示すごとく、前記芯部材１３の外面を、前記芯部材１３の押込み方向に窄まった円錐状に構成しておけば、前記芯部材１３が前記拡径可能部７の内部に押込まれる際に、前記拡径可能部７の拡径が容易になる。
前記拡径可能部７には、図２および図３、図４に示すごとく、前記オス部３の長手方向に沿った複数条のスリット１４を形成し、前記オス部３をその周方向に分割した状態に形成してある。これにより、前記拡径可能部７の拡径が容易となる。
また、前記拡径可能部７の基端部には、前記拡径可能部７の拡径を更に容易にするための薄肉部１５が形成されている。
尚、前記芯部材１３および前記拡径可能部７は、上記の形状に限られるものではない。例えば、前記芯部材１３が単なる球状であり、前記拡径可能部７が前記スリット１４等を有しない完全に一体の円筒であってもよい。要するに、前記拡径可能部７が前記芯部材１３の作用によって拡径するものであれば何れの形状を組合わせたものでもよい。
【００１７】
（メス部）
次に、前記メス部４の詳細を以下に示す。
前記メス部４は、図２、図４に示すごとく、前記第２セグメント２に突出して形成された前記凸部本体５内に設けられている。
前記凸部本体５は、例えば、図２に示すごとく、前記凸部本体５の取付側端部に設けられた第２取付ネジ部１６と、前記第２セグメント２に設けられた第２取付ネジ孔１７との螺合により取付けられている。前記凸部本体５の回転操作は、前記凸部本体５の外周面に設けた工具取付孔１８等を用いて行う。
この他、前記凸部本体５は、前記第２セグメント２と一体に形成してもよいし、嵌入、溶接などで前記第２セグメント２に固定してもよい。
【００１８】
前記凸部本体５の先端外面には、前記凹部本体６との係合を容易にすべく先細状の先端外部径斜面１９を形成してある。図２では、前記凸部本体５の先端のみを先細状に形成しているが、前記凸部本体５の全体を先細状にしてもよい。ただし、前記凸部本体５と前記凹部本体６とが係合した状態では、前記凸部本体５の外面の略全部と前記凹部本体６の内面の略全部とが、概ね接触していることが望ましい。つまり、前述したごとく、連結部に作用する剪断力を、前記凸部本体５と前記凹部本体６との係合によって負担させる必要があるからである。
一方、前記凸部本体５の先端内面には、前記オス部３材の挿入を容易にすべく、前記凸部本体５の開口側に拡径する状態の先端内部傾斜面２０を形成してある。
【００１９】
前記メス部４には、前記オス部３が前記メス部４に挿入されるに伴って、前記芯部材１３を前記オス部３の内方に押込む押圧部２１と、前記芯部材１３によって拡径された前記拡径可能部７の外面と当接して、前記オス部３が前記メス部４から抜け出るのを阻止する抜止部２２とが設けられている。
前記抜止部２２の内面は、前記オス部３の挿入方向、即ち、前記メス部４の奥部に向かって拡径した円錐状となっている。つまり、前記メス部４への挿入に伴って円錐状に拡径された前記拡径可能部７の外面に対し、前記抜止部２２の内面を略面接触させて、前記オス部３の抜出しを確実に阻止するためである。
この意味においては、前記拡径可能部７の外面および前記抜止部２２の内面が粗な状態に形成されていると、前記オス部３の抜止め効果がより高まって都合がよい。具体的な方法としては、前記両面の表面を機械加工する方法、あるいは、高硬度粒子を含む塗料を塗布する方法などが考えられる。
【００２０】
前記押圧部２１は、図２に示すごとく、前記メス部４の最奥部分から前記メス部４の開口部に向かって突出形成されている。
この場合、例えば、前記押圧部２１の押圧面２３を凸球面状に形成し、前記芯部材１３の被押圧面２４を凹球面状に形成すると、前記オス部３が前記メス部４に挿入される際に、前記芯部材１３が前記押圧部２１から外れることがない。この結果、前記拡径可能部７の各部が均等に拡径されることとなる。
【００２１】
図２に示すごとく、前記オス部３の外形は、何れの部位の外径も略等しい略筒形状である。この構成によれば、前記メス部４への挿入が比較的容易であり、かつ、挿入後、前記オス部３を前記抜止部２２の内面と当接させるべく前記拡径可能部７の外面が略円錐状になるまで拡径させる際の角度を比較的小さくできる。
【００２２】
（引込機構）
当該連結装置のオス部３には、図２、図４に示すごとく、前記拡径可能部７の拡径状態を保持し、更には、前記拡径可能部７をより拡径させるための引込機構Ｐが備えられている。
当該引込機構Ｐは、例えば、前記芯部材１３から延出した引込部材２５と、当該引込部材２５の端部に形成された引込ネジ部２６、当該引込ネジ部２６に係合する引込ナット２７とからなる。前記引込部材２５は、前記第１取付ネジ部９の内部を貫通しており、前記引込ネジ部２６の少なくとも一部が前記第１取付ネジ部９の端部から突出している。この突出した引込ネジ部２６に前記引込ナット２７が螺合している。図示は省略しているが、当該引込ナット２７と前記第１取付ネジ部９との間には、ワッシャ等を介在させてもよい。
【００２３】
本構成によれば、前記引込ナット２７を螺進させ、前記芯部材１３を前記凹部本体６の底部１０側に引込むことで、前記拡径可能部７をさらに拡径させることができる。
本発明の連結装置は、基本的には、前記オス部３を前記メス部４に挿入するだけで前記第１セグメント１と前記第２セグメント２とを連結することができる。つまり、一旦押込まれた前記芯部材１３は前記オス部３の内面に摩擦力等によって固定保持され、前記オス部３の抜出しを有効に防止するからである。
しかし、前記オス部３あるいは前記メス部４に製作誤差が存在したり、前記第１セグメント１に対する前記オス部３の取付け等に誤差が存在していると、前記オス部３を前記メス部４の内部に押込んだだけでは、前記オス部３と前記メス部４との係合が十分なされない事態も生じ得る。さらに、前記第１セグメント１と前記第２セグメント２とを当初は適切に連結したとしても、その後、連結部に何らかの外力が作用したり、前記オス部３等を構成する部材が径年変形したりして連結状態が緩む場合がある。
前記引込機構Ｐによれば、このような場合に、前記オス部３と前記メス部４との当接力を向上させたり、連結状態を容易に回復させることができる。
【００２４】
図１では、本発明の連結装置をセグメント自身に取付けた実施の形態を示したが、当該連結装置は、図５に示すように用いることもできる。
例えば、コンクリートセグメントどうしを連結する場合、一方のコンクリートセグメント２８に埋設する第１接続部材２９に前記凹部本体６を設け、他方のコンクリートセグメント３０に埋設する第２接続部材３１に前記凸部本体５を設ける。本構成であっても前述の実施の形態と同等の連結部を得ることができる。
尚、前記第１接続部材２９および前記第２接続部材３１から延出している棒状の部材は、これら接続部材２９，３１をコンクリートセグメント中に固定するためのアンカー部３２である。
【００２５】
図２および、図４、図５においては、前記凸部本体５が、当該凸部本体５の外径よりも小径である前記第２取付ネジ部１６を介して、第２被連結部材Ｂである前記第２セグメント２、あるいは、前記第２接続部材３１に取付けられている実施の形態を示した。
しかし、前述のごとく、前記凸部本体５は、連結部分に作用する剪断力に対抗し得る強度が必要である。
そこで、取付ネジ部を用いる固定においては、図６に示すごとく、前記第２被連結部材Ｂ側にピット３３を設け、当該ピット３３の底面部３４に改めて前記第２取付ネジ孔１７を設ける構成としてもよい。
即ち、前記凸部本体５の基端側外周面を前記ピット３３の側面に嵌入させた状態で、あるいは、略当接させた状態で、前記第２取付ネジ部１６を前記第２取付ネジ孔１７に螺入する。当該構成にすれば、前記凸部本体５に作用する剪断力を、前記第２取付ネジ部１６によってではなく、前記凸部本体５の基端部によって負担することとなる。この結果、前記凸部本体５の最大断面で前記剪断力に対抗するから、連結部の強度が向上する。
尚、前記第２被連結部材Ｂの表面から前記凸部本体５の先端までの突出長さは、前記ピット底面部３４の深さの調整等により容易に決定することができる。
【００２６】
次に、本発明の連結装置に係る第２の実施形態について説明する。
上記の実施の形態においては、前記連結機構Ｊを、前記オス部３が拡径変形するものとして構成したが、以下に示すごとく、前記メス部材４側に可動部を設けて構成してもよい。
当該別実施形態に係る連結機構Ｊを図７から図９に示す。
ここでは、前記第１セグメント１および前記第２セグメント２は、コンクリートセグメントとする。
この場合、前記オス部３は、前記第１セグメント１側から前記第２セグメント２側に向けて突出形成されている。このオス部３は、その先端部４０を略球形に形成すると共にその基端側ほど軸径を大きくした先端側傾斜部４１と、当該先端側傾斜部４１に連接されていて前記オス部３の基端側ほど縮径した基端側傾斜部４２とを備えている。この基端側傾斜部４２のさらに基端側には、円柱部４３およびオス側基端部４４を設けてある。
当該オス側基端部４４には、前記オス部３を前記第１セグメント１に埋設固定するためのオス側アンカー４５が連接してある。
【００２７】
一方、前記メス部４は、前記オス部３を嵌入させるための入口４６および中空穴部４７を有する。当該中空穴部４７は、前記入口４６より奥側ほど概ね拡径するように構成されている。具体的には、前記入口４６近傍の入口側円筒部４８と、この奥部に形成されているメス側傾斜部４９と、この更に奥側に形成される奥側円筒部５０とを備えて構成してある。
前記メス部４は、前記オス部３が前記第１セグメント１に対して引退して設けてあるのに対し、前記第２セグメント２に対して突出して設けてある。前記メス部４には、当該メス部４を前記第２セグメント２に固定するためのメス側基端部５１が螺入されており、さらに、当該メス側基端部５１にはメス側アンカー５２が延設されている。
前記中空穴部４７には、前記オス部３が前記メス部４から抜け出るのを阻止すべく、前記基端側傾斜部４２と前記メス側傾斜部４９との間に介装される複数のチャック部材５３が設けてある。
これら複数のチャック部材５３は、前記オス部３が嵌入自在な嵌入空間５４を形成すると共に、前記オス部３の嵌入方向に移動自在に前記中空穴部４７内に配置される。さらに、前記チャック部材５３は、当該チャック部材５３と前記メス側基端部５１との間に介装された付勢部材５５であるコイルスプリングにより、前記入口４６側に付勢されている。
前記メス側傾斜部４９の内周部には、前記入口４６側ほど小径となるメス側カム面５６が形成され、前記チャック部材５３の外側に形成された外側カム面５７と摺接する。一方、前記チャック部材５３の内側には内側カム面５８が形成され、前記基端側傾斜部４２に形成したオス側カム面５９と当接する。ここで、前記外側カム面５７と前記内側カム面５８とは平行ではなく、双方の面５７，５８の間隔は前記オス部３の基端部側ほど狭くなっている。
このように構成することにより前記メス部４への前記オス部３の挿入操作により、隣接する前記チャック部材５３どうしが離間して前記嵌入空間５４が拡大し、前記メス部４への前記オス部３の受入れを可能にし、一旦、前記オス部３が挿入された後は、当該オス部３の抜出しを防止する構成にしてある。
【００２８】
実際の連結操作に際しては、図９に示すごとく、前記オス部３を前記メス部４に挿入すると、その初期においては前記オス部３が前記チャック部材５３を前記メス部４の奥側に押圧し、前記チャック部材５３は前記付勢部材５５の付勢力に抗して奥側に後退すると共に、夫々のチャック部材５３が各々前記メス側カム面５６に案内されて相互に拡開操作され、前記嵌入空間５４が広がる。この広がり量が前記オス部３の外径よりも大きくなった段階で、前記オス部３が前記チャック部材５３の内部に侵入する。ここで、前記チャック部材５３の内側カム面５８が、前記オス側カム面５９に係合した状態で、前記チャック部材５３の外側カム面５７が、前記付勢部材５５の付勢力によって前記メス側カム面５６に当接し、図７に示すごとく前記オス部３と前記メス部４との連結が完了する。この場合に、前記外側カム面５７と前記内側カム面５８との間隔は、前記オス部３の基端部側ほど狭くなっているから、前記チャック部材５３は、前記メス側傾斜部４９と前記基端側傾斜部４２との間に形成される空間に対して、よりオス側基端部４４側に押入される。よって、一旦挿入された前記オス部３の引抜き量を最小に留めることができる。
当該連結状態において、前記オス部３に引抜き力が作用すると、前記メス側カム面５６と前記外側カム面５７との摺接により、前記チャック部材５３が縮径操作され、この時、前記チャック部材５３の内側カム面５８と前記オス側カム面５９との係合が高められて、前記チャック部材５３の縮径作動をより効率よく行わせる結果、前記連結機構Ｊの連結状態をより強固なものとすることができる。
【００２９】
以上のごとく、本発明の連結装置によれば、十分な連結部強度を有しながら、搬送性・取扱性に優れた連結装置を提供することができる。
尚、特許請求の範囲の項に、図面との対照を便利にするために符号を記すが、該記入により本発明は添付図面の構成に限定されるものではない。
【図面の簡単な説明】
【図１】本発明に係る連結装置の使用例を示す説明図
【図２】本発明に係る連結装置の連結前における状態を示す縦断面図
【図３】本発明に係る連結装置の凸部本体の横断面図
【図４】本発明に係る連結装置の連結後における状態を示す縦断面図
【図５】別実施の形態における凸部本体側連結装置及び凹部本体側連結装置を示す縦断面図
【図６】別実施の形態における凸部本体の取付構造を示す縦断面図
【図７】別実施の形態に係る連結装置の連結後における状態を示す縦断面図
【図８】別実施の形態に係る連結装置の連結後における状態を示す横断面図
【図９】別実施の形態に係る連結装置の連結過程を示す説明図
【符号の説明】
３オス部
４メス部
５凸部本体
６凹部本体
１３芯部材
２２抜止部
４２基端側傾斜部
４６入口
５３チャック部材
５４嵌入空間
５５付勢部材
５６メス側カム面
５７外側カム面
５８内側カム面
Ａ第１被連結部材
Ｂ第２被連結部材
Ｃ囲繞部
Ｊ連結機構
Ｐ引込機構[0001]
BACKGROUND OF THE INVENTION
According to the present invention, the first connected member is provided with a male part, the second connected member is provided with a female part into which the male part can be inserted, and the male part is inserted into the female part. A connecting mechanism configured to connect the connected member and the second connected member so as to be connectable to each other, and preventing the male part from coming out of the female part as the male part is inserted into the female part, The present invention relates to a connecting device provided across the male part and the female part.
[0002]
[Prior art]
Conventionally, this type of connecting device is used, for example, to connect shield segments forming a tunnel.
That is, the male part provided in the other segment to be newly connected is inserted into the female part provided in the already installed one segment. At that time, the male part and the female part are connected and fixed by engaging the male part and the female part by a connecting mechanism provided across the male part and the female part. .
[0003]
[Problems to be solved by the invention]
However, the conventional coupling device has the following problems.
That is, some external force usually acts on the connecting portion, but a large shearing force may act on the connecting portion between the segments constituting the tunnel in a direction perpendicular to the tunnel axis. In the case where the male part is simply inserted and fixed to the female part as in the conventional coupling device, the shearing force must be borne only by the male part.
However, the male part may have a movable part for engaging with the female part, and it may be difficult to firmly counter the shearing force with only the male part.
Furthermore, the transportability / handleability of the segment or the like provided with the connecting device was also poor. Since the male part is attached to one segment in a state of protruding without any protective means, there is a risk that the male part may accidentally come into contact with another object during transportation of the segment. The part deforms and becomes unusable.
[0004]
An object of the present invention is to eliminate such drawbacks of the prior art, and to provide a connecting device having excellent transportability and handling properties while having a sufficient connecting portion strength.
[0005]
[Means for Solving the Problems]
(Configuration 1)
  The characteristic configuration of the present invention to achieve this object is as described in claim 1.By disposing the male part in the recessed body formed in the first connected member in a retracted state, the inner peripheral wall of the recessed body is configured as a surrounding part surrounding the male part, and the recessed part A convex body that can be engaged with the main body is attached to the second coupled member in a state in which the maximum outer diameter portion is fitted into the second coupled member, and the female portion is attached to the convex body. When the male part is inserted into the female part by engaging the convex part body in the concave part body and forming the outer peripheral part of the tip of the convex part body in a tapered shape, the surrounding part is It exists in the point which can guide the outer surface of a convex-part main body.
(Action / Effect)
  According to the coupling device of the present configuration, the outer peripheral portion of the female portion (Convex part body)Will be inserted. Therefore, for example, when a shearing force is applied to the connecting part, the male part itself is not configured to resist the shearing force as in the conventional connecting device, but the outer surface of the female part fitted on the male part and the surrounding part It resists shearing force with the inner surface. For this reason, since it can resist the said shear force with a wider cross-sectional area with respect to the cross-sectional area of a male part, the intensity | strength of a connection part can be improved.
  Further, the connecting device of the present configuration is configured such that the first connected member is simply formed in a concave shape and the male portion is retracted while the surrounding portion is formed, while the second connected member is convex. A part is formed, and the female part is formed therein, and the surrounding part can be configured very simply.
Moreover, since the male part that is easily deformed is protected by the surrounding part, even if the male part is accidentally brought into contact with another object before connection, the male part is less likely to be deformed, and the male part is reliably protected. It is possible to improve the carryability and handleability of the first and second connected members.
Furthermore, since the outer peripheral surface of the distal end of the knife portion is formed in a tapered shape, it is very easy to insert the knife portion into the concave body.
In addition, it is the convex main body in which the female portion is formed that resists the shearing force acting on the connecting portion, but the convex main body is provided in a state of being embedded in the second connected member. Thus, a portion having the maximum cross-sectional area in the convex body can be made to resist the shearing force, and the strength of the connecting portion can be further improved.
[0008]
(Constitution2)
  The connecting mechanism in the connecting device of the present invention is as follows.2As described above, the male portion is formed in a substantially cylindrical shape, and a diameter-enlarging mechanism is provided that expands the tip of the male portion as the male portion is inserted into the female portion. A retaining portion that contacts the outer surface of the diametered male portion and prevents the male portion from coming out of the female portion can be provided in the female portion.
(Action / Effect)
  If it is this structure, both can be connected only by pressing a said 1st to-be-connected member and a said 2nd to-be-connected member. Therefore, the connection work of the first connected member and the second connected member can be performed very efficiently.
[0009]
(Constitution3)
  The connecting device of the present invention is as follows.3As described above, the male part has a core member capable of expanding the male part, and the core member is drawn into the male part in a state where the male part is inserted into the female part. An operable retracting mechanism can be provided in the male part.
(Action / Effect)
  According to this configuration, even if there is a backlash in the initial state in which the first connected member and the second connected member are pressed and connected, the pulling mechanism is operated to further expand the diameter of the male part. The initial connection state can be appropriately set by increasing the contact force with the knife portion.
  Further, after the connection, even if the connection state is loosened due to external force acting on the connection part or due to the age of the male part or the like being deformed, the retraction mechanism is operated to further The connected state between the male part and the female part can be recovered by expanding the diameter.
[0010]
(Constitution4)
  Further, the coupling mechanism of the coupling device according to the present invention is as follows.4As described above, the chuck member forming the insertion space in which the male part can be inserted is arranged in the female part so as to be movable in the insertion direction of the male part, and is divided into a plurality of parts in the circumferential direction. An urging member for urging the member toward the inlet side with respect to the male part is provided, and the inner periphery of the female part is formed on a female cam surface having a smaller diameter toward the inlet side, and the outer surface of the chuck member is Formed on the outer cam surface with respect to the female cam surface, a proximal-side inclined portion having a smaller diameter toward the proximal end is provided on the peripheral side wall portion of the male portion. The cam surface can be configured to be slidable / engageable.
(Action / Effect)
  The connecting mechanism of this configuration also claims2In the same manner as the connecting mechanism, the first connected member and the second connected member can be connected by simply pressing the first connected member and the second connected member, and the first connected member and the second connected member are connected. Work can be done efficiently.
  In addition, with this configuration, there is no operating part on the male part side, which is more likely to come into contact with other objects than the female part, and therefore the occurrence of a situation where the function of the coupling mechanism is impaired by an unexpected accident. Can be reduced.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
The connecting device of the present invention is used, for example, when connecting a large number of ductile segments, steel segments, or concrete segments (collectively referred to as “segments”) used when constructing a tunnel or the like.
[0012]
(Overview)
As shown in FIGS. 1 to 4, for example, the connecting device of the present invention is provided with a male portion 3 in the first segment 1 which is the first connected member A, and is already installed as the second connected member B. The second segment 2 is provided with a female part 4 into which the male part 3 can be inserted.
When connecting the first segment 1 and the second segment 2, both are pressed to insert the male part 3 into the female part 4, and spans the male part 3 and the female part 4. Both are engaged and connected using the provided connecting mechanism J.
However, it is difficult to say that the connection portion is sufficiently strong in the connection using only the male portion 3 and the female portion 4. In other words, a shearing force or the like in a direction perpendicular to the connecting direction acts on the connecting part. However, in the configuration in which only the male part 3 resists the shearing force, a movable part is formed in the male part 3. This is because there is a certain limit to the shearing force that the male part 3 can bear.
In order to eliminate this point, in the coupling device of the present invention, the surrounding portion C surrounding the male portion 3 is formed in the first segment 1, and on the other hand, the surrounding portion C can be inserted into the surrounding portion C. A convex body 5 having a female portion 4 that can be engaged with the male portion 3 is formed in the second segment 2.
That is, when the first segment 1 and the second segment 2 are connected, the first segment 1 and the second segment 2 are displaced in the shearing direction from the surrounding portion C and the convex body 5. The male part 3 and the female part 4 are provided with a function of preventing the first segment 1 and the second segment 2 from being separated in the drawing direction. In other words, the shearing force acting on the connecting portion is borne by the contact portion between the surrounding portion C and the convex body 5, and the tensile force acting on the connecting portion is the male portion 3 and the female portion. 4 is borne by the engaging portion.
[0013]
Further, if the male part 3 is surrounded by the surrounding part C as in the case of the connecting device, it is also effective for protecting the male part 3.
The male part 3 may have some movable part in order to engage with the female part 4, and in that case, it is considered that the impact resistance against collision with other objects is reduced. If the male part 3 is caused to collide with another object during the transportation of the first segment 1, the male part 3 may be deformed, and subsequent connection work may be impossible. If the surrounding part C is formed around the male part 3 as in the connecting device, the chance of the male part 3 being damaged can be reduced, and the transportability / work of the first segment 1 and the like can be reduced. Can be improved.
[0014]
Hereinafter, a first embodiment according to the coupling device of the present invention will be described.
[0015]
(Male part)
The detail of the said male part 3 is shown below.
In the present embodiment, as shown in FIG. 2, the concave body 6 is formed in the first segment 1, and the surrounding portion C is configured by the peripheral wall of the concave body 6. In order to reliably protect the tip of the male part 3, the concave body 6 is formed deeper than the protruding length of the male part 3.
The overall shape of the male part 3 is substantially cylindrical. One end forms a diameter-expandable portion 7 that is inserted into the female portion 4 to expand the diameter, and the other end forms a first attachment portion 8 that is attached to the first segment 1. A first mounting screw portion 9 is formed on the outer surface of the first mounting portion 8.
On the other hand, a first mounting screw hole 11 is formed in the bottom portion 10 of the concave body 6, and the male portion 3 is formed by screwing the first mounting screw portion 9 into the first mounting screw hole 11. Attached to the first segment 1.
Of the both ends of the first mounting screw portion 9, a position adjacent to the diameter-expandable portion 7 is a surface perpendicular to the longitudinal direction of the male portion 3, and faces the direction of the first mounting portion 8. One mounting surface 12 is formed to protrude. The first mounting screw portion 9 is screwed into the first mounting screw hole 11 until the first mounting surface 12 contacts the surface of the bottom portion 10. Thereby, the protrusion length of the male part 3 from the surface of the bottom part 10 is determined.
In addition, in order to attach the male part 3 to the first segment 1, various methods such as fitting and welding can be used in addition to the above-described screwing.
[0016]
A core member 13 that can be fitted into the male part 3 is provided at the distal end of the male part 3 on the diameter-expandable part 7 side. When the male part 3 is inserted into the female part 4, the core member 13 is pushed into the first mounting screw part 9 side to expand the diameter-expandable part 7.
For example, as shown in FIG. 2, if the outer surface of the core member 13 is configured in a conical shape constricted in the pushing direction of the core member 13, the core member 13 is placed inside the diameter-expandable portion 7. When pushed, the diameter of the diameter-expandable portion 7 can be easily increased.
As shown in FIGS. 2, 3, and 4, the diameter-expandable portion 7 is formed with a plurality of slits 14 along the longitudinal direction of the male portion 3, and the male portion 3 is divided in the circumferential direction. It is formed in the state. Thereby, the diameter expansion of the diameter expansion possible part 7 becomes easy.
Further, a thin wall portion 15 is formed at the base end portion of the diameter-expandable portion 7 in order to further facilitate the diameter expansion of the diameter-expandable portion 7.
In addition, the said core member 13 and the said diameter expansion possible part 7 are not restricted to said shape. For example, the core member 13 may be a simple spherical shape, and the diameter-expandable portion 7 may be a completely integrated cylinder without the slit 14 or the like. In short, any combination of the shapes may be used as long as the diameter-expandable portion 7 is expanded by the action of the core member 13.
[0017]
(Female part)
Next, the detail of the said knife part 4 is shown below.
As shown in FIGS. 2 and 4, the female portion 4 is provided in the convex body 5 formed to protrude from the second segment 2.
For example, as shown in FIG. 2, the convex body 5 includes a second mounting screw 16 provided at an attachment side end of the convex body 5 and a second mounting screw provided in the second segment 2. It is attached by screwing with the hole 17. The rotation of the convex body 5 is performed using a tool mounting hole 18 provided on the outer peripheral surface of the convex body 5.
In addition, the convex body 5 may be formed integrally with the second segment 2 or may be fixed to the second segment 2 by fitting, welding, or the like.
[0018]
A tapered tip outer diameter slope 19 is formed on the outer surface of the tip of the convex body 5 so as to facilitate engagement with the concave body 6. In FIG. 2, only the tip of the convex body 5 is tapered, but the entire convex body 5 may be tapered. However, in a state where the convex body 5 and the concave body 6 are engaged, substantially all of the outer surface of the convex body 5 and almost all of the inner surface of the concave body 6 are in general contact. desirable. That is, as described above, the shearing force acting on the connecting portion needs to be borne by the engagement between the convex body 5 and the concave body 6.
On the other hand, a tip inner inclined surface 20 is formed on the inner surface of the distal end of the convex body 5 so as to facilitate the insertion of the male part 3 material. .
[0019]
As the male part 3 is inserted into the female part 4, the female part 4 is expanded by the pressing part 21 that pushes the core member 13 inward of the male part 3 and the core member 13. A retaining portion 22 that abuts against the outer surface of the diameter-expandable portion 7 and prevents the male portion 3 from coming out of the female portion 4 is provided.
The inner surface of the retaining portion 22 has a conical shape whose diameter increases toward the insertion direction of the male portion 3, that is, the inner portion of the female portion 4. That is, the inner surface of the retaining portion 22 is brought into substantially surface contact with the outer surface of the diameter-expandable portion 7 which has been expanded in a conical shape with the insertion into the female portion 4, and the male portion 3 is extracted. This is for sure prevention.
In this sense, if the outer surface of the diameter-expandable portion 7 and the inner surface of the retaining portion 22 are formed in a rough state, it is convenient because the retaining effect of the male portion 3 is further enhanced. As a specific method, a method of machining the surfaces of the both surfaces, a method of applying a paint containing high hardness particles, or the like can be considered.
[0020]
As shown in FIG. 2, the pressing portion 21 is formed so as to protrude from the innermost portion of the female portion 4 toward the opening of the female portion 4.
In this case, for example, when the pressing surface 23 of the pressing portion 21 is formed in a convex spherical shape and the pressed surface 24 of the core member 13 is formed in a concave spherical shape, the male portion 3 is inserted into the female portion 4. In this case, the core member 13 does not come off from the pressing portion 21. As a result, each part of the diameter-expandable part 7 is expanded uniformly.
[0021]
As shown in FIG. 2, the outer shape of the male part 3 is a substantially cylindrical shape having the same outer diameter at any part. According to this configuration, the outer surface of the diameter-expandable portion 7 is relatively easy to insert into the female portion 4, and after insertion, the outer surface of the diameter-expandable portion 7 is brought into contact with the inner surface of the retaining portion 22. The angle at the time of expanding the diameter until it becomes substantially conical can be made relatively small.
[0022]
(Retraction mechanism)
As shown in FIGS. 2 and 4, the male portion 3 of the coupling device retains the diameter-expanded state of the diameter-expandable portion 7 and further pulls in the diameter-expandable portion 7. A mechanism P is provided.
The retracting mechanism P includes, for example, a retracting member 25 extending from the core member 13, a retracting screw portion 26 formed at an end of the retracting member 25, and a retracting nut 27 that engages with the retracting screw portion 26. Consists of. The pull-in member 25 passes through the inside of the first mounting screw portion 9, and at least a part of the pull-in screw portion 26 protrudes from an end portion of the first mounting screw portion 9. The drawing nut 27 is screwed into the protruding drawing screw portion 26. Although not shown, a washer or the like may be interposed between the drawing nut 27 and the first mounting screw portion 9.
[0023]
According to this configuration, the diameter-expandable portion 7 can be further expanded by screwing the pull-in nut 27 and pulling the core member 13 toward the bottom 10 of the concave body 6.
The connecting device of the present invention can basically connect the first segment 1 and the second segment 2 simply by inserting the male part 3 into the female part 4. That is, the core member 13 once pushed in is fixed and held on the inner surface of the male part 3 by a frictional force or the like, and effectively prevents the male part 3 from being pulled out.
However, if there is a manufacturing error in the male part 3 or the female part 4, or if there is an error in the attachment of the male part 3 to the first segment 1, the male part 3 is replaced with the female part 4. The situation where the engagement between the male part 3 and the female part 4 is not sufficient can be caused only by pushing it into the inside. Furthermore, even if the first segment 1 and the second segment 2 are appropriately connected at the beginning, after that, some external force acts on the connecting portion, or the members constituting the male portion 3 and the like are deformed by the age. The connection may be loosened.
According to the retracting mechanism P, in such a case, the contact force between the male part 3 and the female part 4 can be improved, or the connected state can be easily recovered.
[0024]
Although FIG. 1 shows the embodiment in which the connecting device of the present invention is attached to the segment itself, the connecting device can also be used as shown in FIG.
For example, when connecting concrete segments, the concave body 6 is provided in the first connection member 29 embedded in one concrete segment 28, and the convex body 5 is provided in the second connection member 31 embedded in the other concrete segment 30. Is provided. Even with this configuration, it is possible to obtain a connecting portion equivalent to the above-described embodiment.
The rod-shaped members extending from the first connection member 29 and the second connection member 31 are anchor portions 32 for fixing the connection members 29 and 31 in the concrete segment.
[0025]
In FIG. 2, FIG. 4, and FIG. 5, the convex body 5 is a second connected member B via the second mounting screw portion 16 having a smaller diameter than the outer diameter of the convex body 5. An embodiment in which the second segment 2 or the second connecting member 31 is attached is shown.
However, as described above, the convex body 5 needs to be strong enough to resist the shearing force acting on the connecting portion.
Therefore, in the fixing using the mounting screw portion, as shown in FIG. 6, the pit 33 is provided on the second connected member B side, and the second mounting screw hole 17 is newly provided on the bottom surface portion 34 of the pit 33. It is good.
That is, the second mounting screw portion 16 is inserted into the second mounting screw hole 16 in a state where the proximal end side outer peripheral surface of the convex body 5 is fitted into the side surface of the pit 33 or in a substantially abutted state. 17 is screwed. With this configuration, the shearing force acting on the convex body 5 is borne not by the second mounting screw portion 16 but by the base end portion of the convex body 5. As a result, the maximum cross section of the convex body 5 is opposed to the shearing force, so that the strength of the connecting portion is improved.
The protruding length from the surface of the second connected member B to the tip of the convex body 5 can be easily determined by adjusting the depth of the pit bottom surface 34 or the like.
[0026]
Next, a second embodiment according to the coupling device of the present invention will be described.
In the above-described embodiment, the coupling mechanism J is configured such that the male part 3 is deformed and expanded. However, as shown below, a movable part may be provided on the female member 4 side. .
A connecting mechanism J according to the another embodiment is shown in FIGS.
Here, the first segment 1 and the second segment 2 are concrete segments.
In this case, the male part 3 is formed so as to protrude from the first segment 1 side toward the second segment 2 side. The male portion 3 has a distal end portion 40 that is formed in a substantially spherical shape and has a distal end side inclined portion 41 that has a larger shaft diameter toward the proximal end side, and is connected to the distal end side inclined portion 41. A proximal-side inclined portion 42 having a diameter reduced toward the proximal side. A cylindrical portion 43 and a male base end portion 44 are provided further on the base end side of the base end side inclined portion 42.
A male side anchor 45 for burying and fixing the male part 3 in the first segment 1 is connected to the male side base end part 44.
[0027]
On the other hand, the female part 4 has an inlet 46 and a hollow hole part 47 for fitting the male part 3 therein. The hollow hole portion 47 is configured so as to increase in diameter substantially toward the back side from the inlet 46. Specifically, it is configured to include an inlet side cylindrical portion 48 in the vicinity of the inlet 46, a female side inclined portion 49 formed in the back portion, and a back side cylindrical portion 50 formed in the further back side. It is.
The female portion 4 is provided so as to protrude with respect to the second segment 2, while the male portion 3 is provided so as to be retreated with respect to the first segment 1. A female side base end 51 for fixing the female part 4 to the second segment 2 is screwed into the female part 4, and a female side anchor 52 is attached to the female side base end 51. Is extended.
A plurality of chucks interposed between the base-side inclined portion 42 and the female-side inclined portion 49 so as to prevent the male portion 3 from coming out of the female portion 4 in the hollow hole portion 47. A member 53 is provided.
The plurality of chuck members 53 form an insertion space 54 into which the male part 3 can be inserted, and are arranged in the hollow hole part 47 so as to be movable in the insertion direction of the male part 3. Further, the chuck member 53 is urged toward the inlet 46 by a coil spring which is an urging member 55 interposed between the chuck member 53 and the female base end portion 51.
A female cam surface 56 having a smaller diameter toward the inlet 46 is formed on the inner peripheral portion of the female inclined portion 49 and is in sliding contact with an outer cam surface 57 formed outside the chuck member 53. On the other hand, an inner cam surface 58 is formed on the inner side of the chuck member 53, and comes into contact with a male cam surface 59 formed on the base end side inclined portion 42. Here, the outer cam surface 57 and the inner cam surface 58 are not parallel, and the distance between the both surfaces 57 and 58 is narrower toward the base end side of the male portion 3.
With this configuration, the insertion operation of the male part 3 into the female part 4 causes the adjacent chuck members 53 to be separated from each other and the insertion space 54 is expanded, so that the male part to the female part 4 is expanded. 3 can be received, and once the male part 3 is inserted, the male part 3 is prevented from being pulled out.
[0028]
In the actual connecting operation, as shown in FIG. 9, when the male part 3 is inserted into the female part 4, the male part 3 presses the chuck member 53 toward the back side of the female part 4 in the initial stage. The chuck member 53 is retracted to the back side against the biasing force of the biasing member 55, and the chuck members 53 are guided by the female cam surface 56 and expanded to each other. The insertion space 54 is expanded. The male part 3 enters the inside of the chuck member 53 when the spread amount becomes larger than the outer diameter of the male part 3. Here, with the inner cam surface 58 of the chuck member 53 engaged with the male cam surface 59, the outer cam surface 57 of the chuck member 53 is moved toward the female side by the biasing force of the biasing member 55. Abutting on the cam surface 56, the connection between the male part 3 and the female part 4 is completed as shown in FIG. In this case, the gap between the outer cam surface 57 and the inner cam surface 58 is narrower toward the proximal end side of the male part 3, so that the chuck member 53 is connected to the female side inclined part 49 and the The space formed between the base end side inclined portion 42 and the male side base end portion 44 is further pushed into the space. Therefore, the extraction amount of the male part 3 once inserted can be kept to a minimum.
When a pulling force is applied to the male part 3 in the connected state, the chuck member 53 is contracted by the sliding contact between the female cam surface 56 and the outer cam surface 57. At this time, the chuck member 53 As a result of the engagement between the inner cam surface 58 of the 53 and the male cam surface 59 being enhanced and the diameter reduction operation of the chuck member 53 being performed more efficiently, the coupling state of the coupling mechanism J becomes stronger. It can be.
[0029]
As described above, according to the coupling device of the present invention, it is possible to provide a coupling device that is excellent in transportability and handleability while having sufficient coupling portion strength.
In the claims, reference numerals are used for convenience of comparison with the drawings. However, the present invention is not limited to the configurations of the accompanying drawings.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing an example of use of a coupling device according to the present invention.
FIG. 2 is a longitudinal sectional view showing a state before connection of a connection device according to the present invention.
FIG. 3 is a cross-sectional view of the convex body of the coupling device according to the present invention.
FIG. 4 is a longitudinal sectional view showing a state after the connecting device according to the present invention is connected;
FIG. 5 is a longitudinal sectional view showing a convex body side coupling device and a concave body side coupling device according to another embodiment.
FIG. 6 is a longitudinal sectional view showing a mounting structure of a convex body in another embodiment
FIG. 7 is a longitudinal sectional view showing a state after a connecting device according to another embodiment is connected;
FIG. 8 is a cross-sectional view showing a state after the coupling device according to another embodiment is coupled.
FIG. 9 is an explanatory view showing a connecting process of a connecting device according to another embodiment.
[Explanation of symbols]
3 Male
4 Female part
5 Convex body
6 Recessed body
13 Core member
22 Stopper
42 Proximal slope part
46 entrance
53 Chuck member
54 Insertion space
55 Biasing member
56 Female cam surface
57 Outer cam surface
58 Inner cam surface
A First connected member
B Second connected member
C Go Club
J coupling mechanism
P Retraction mechanism

Claims

The male part (3) is provided in the first connected member (A), the female part (4) into which the male part (3) can be inserted is provided in the second connected member (B), and the male part (3 ) Is inserted into the female part (4), so that the first connected member (A) and the second connected member (B) can be connected to each other,
As the male part (3) is inserted into the female part (4), a connecting mechanism (J) for preventing the male part (3) from coming out of the female part (4) is provided with the male part. (3) A connecting device provided across the female part (4),
By disposing the male part (3) in a recessed state main body (6) formed in the first connected member (A) in a retreated state, the inner peripheral wall of the concave body (6) is connected to the male part (6). 3) As a surrounding part (C) surrounding the periphery of
The convex body (5) that can be engaged with the concave body (6) has the maximum outer diameter portion fitted in the second coupled member (B), and the second coupled member (B). The female part (4) is provided inside the convex body (5), the outer periphery of the tip of the convex body (5) is tapered, and the convex body (5) When the male part (3) is inserted into the female part (4) by engaging in the concave part main body (6), the surrounding part (C) can guide the outer surface of the convex part main body (5). Connecting device.

The male portion (3) is formed in a substantially cylindrical shape, and the distal end portion of the male portion (3) is enlarged as the male portion (3) is inserted into the female portion (4). A diameter-enlarging mechanism is provided, and a retaining portion (22) that prevents the male portion (3) from coming out of the female portion (4) by contacting the outer surface of the enlarged male portion (3). The coupling device according to claim 1, wherein the coupling mechanism (J) is configured by being provided in the portion (4).

The male part (3) has a core member (13) capable of expanding the male part (3), and the male part (3) is inserted into the female part (4). The coupling device according to claim 2, wherein a retracting mechanism (P) capable of retracting a core member (13) into the male portion (3) is provided in the male portion (3).

A chuck member (53) that forms an insertion space (54) into which the male part (3) can be inserted is disposed in the female part (4) so as to be movable in the insertion direction of the male part (3), A biasing member (55) for biasing the chuck member (53) toward the inlet (46) with respect to the male part (3) is provided, and the inner periphery of the female part (4) is provided. Is formed on the female cam surface (56) having a smaller diameter on the inlet (46) side, and the outer surface of the chuck member (53) is an outer cam surface (57) relative to the female cam surface (56). Forming,
A proximal-side inclined portion (42) having a smaller diameter toward the proximal end side is provided on the peripheral side wall portion of the male portion (3), and this proximal-side inclined portion (42) is provided inside the chuck member (53). The coupling device according to claim 1, wherein the coupling mechanism (J) is configured to be slidable and engageable with a cam surface (58).