JP3805222B2

JP3805222B2 - Pipe fittings and pipe fitting structures

Info

Publication number: JP3805222B2
Application number: JP2001284256A
Authority: JP
Inventors: 祐介北村
Original assignee: Mirai Kogyo KK
Current assignee: Mirai Kogyo KK
Priority date: 2001-09-19
Filing date: 2001-09-19
Publication date: 2006-08-02
Anticipated expiration: 2021-09-19
Also published as: JP2003090473A

Description

【０００１】
【発明の属する技術分野】
この発明は、管が接続される管継手および管継手構造に関するものである。
【０００２】
【従来の技術】
従来、例えば、ハンドホールに固定される管継手として、特開２０００−１６１５６４号公報に記載された継手が知られていた。この継手は、被連結部としてのハンドホールに埋設される第１の筒体と、波付管の端部に取り付けられる第２の筒体とを備えていた。そして、この第１の筒体に、第２の筒体が挿し込まれることで、波付管は、ハンドホールに連結された。このとき、第１の筒体と第２の筒体とは、第１の筒体内の止めリングによって接続され、また、第２の筒体と、波付管とは、それら第２の筒体および波付管の外周に跨る、半割りカラー等の抜け止め具によって接続されていた。そして、ハンドホールに埋設された第１の筒体に対して、第２の筒体は取外しができず、その代わりに、ハンドホールの外部に表れる第２の筒体および波付管から、抜け止め具を外すことで、波付管を取り外すことができた。
【０００３】
【発明が解決しようとする課題】
ところで、前記従来の継手にあっては、波付管を継手から取り外すことができる構造にするために、その継手を、第１の筒体と第２の筒体とに分離した構造としなければならなかった。
【０００４】
この発明は、上記した従来の欠点を解決するためになされたものであり、その目的とするところは、簡単な構造で、波付管の取外しを可能にした、管継手および管継手構造を提供することにある。
【０００５】
【課題を解決するための手段】
この発明に係る管継手および管継手構造は、前記目的を達成するために、次の構成からなる。すなわち、
請求項１に記載の発明に係る管継手は、波付管が接続される管継手であって、前記波付管が挿入される挿入部を有する継手本体と、前記挿入部の内周に形成された収容空間に収容される爪部材とを備える。ここで、前記爪部材は、環状の一部が分断された形状であって、弾性的に拡径可能となるとともに、前記収容空間内に周方向の回動が防止されて配置される。さらに、前記爪部材は、拡径すべく、前記挿入部に挿入される波付管に押圧される被押圧面を備え、かつ、前記爪部材には、その内周側に、前記波付管が前記挿入部に挿入される過程で、前記爪部材の拡径した径が戻るようにして、前記波付管に係合して前記波付管を抜止めする係止爪が形成されている。また、前記継手本体には、前記挿入部の前面に臨んで、前記波付管と前記係止爪との係合を解除するための工具が、前記挿入部の前面側から挿入可能となる工具挿入部が形成されている。そして、前記爪部材には、前記工具に押圧されることで、前記係止爪が前記波付管から後退して前記係合が解除される押圧操作部が、前記被押圧面よりも窪むようにして傾斜して形成されている。
【０００６】
これにより、波付管を継手本体の挿入部に挿入すると、波付管が、爪部材に備わる被押圧面を押圧し、爪部材は、拡径する。そして、さらに、波付管を挿入部に挿入していくと、爪部材の拡径した径が戻るようにして、係止爪が波付管に係合し、波付管は抜け止めされる。こうして、波付管は、この管継手に接続される。そして、爪部材は、継手本体の収容空間内に周方向の回動が防止されて配置されており、工具挿入部が、継手本体の周方向の一部に備わる場合であっても、その工具挿入部に対する押圧操作部の周方向の位置を、同位置に保つことができる。ここで、継手本体には、挿入部の前面に臨んで工具挿入部が形成されており、この工具挿入部に、工具を、挿入部の前面側から挿入して、その工具によって押圧操作部を押圧することで、係止爪が波付管から後退してその係合が解除される。こうして、波付管と、この管継手の係止爪との係合を解除することで、波付管を継手本体から取り外すことができる。そして、このように、工具挿入部は、挿入部の前面に臨んで形成されており、例えば、継手本体がコンクリートに埋設されて、挿入部の前面が、コンクリートの表面と面一となっている場合であっても、工具を、工具挿入部に挿入することができる。
【０００７】
また、請求項２に記載の発明に係る管継手は、請求項１に記載の管継手において、前記押圧操作部は、前記被押圧面よりも外方まで延設されている。
【０００８】
また、請求項３に記載の発明に係る管継手は、請求項１または２に記載の管継手において、前記押圧操作部は、前記係止爪に備わる。これにより、工具による押圧操作部の押圧が、係止爪に直接作用し、係止爪が、波付管から容易に後退する。
【０００９】
【００１０】
【００１１】
また、請求項４に記載の発明に係る管継手構造は、請求項１ないし３のいずれか１項に記載の管継手と、前記継手本体が埋設されるようにして繋がる被連結部とからなり、前記管継手は、前記挿入部の前面が、前記被連結部の表面と面一となっている。このように、継手本体が、被連結部に埋設されるにも拘わらず、工具挿入部は、挿入部の前面に臨んで形成されているので、工具を、工具挿入部に挿入することができ、波付管と、管継手の係止爪との係合を解除して、波付管を継手本体から取り外すことができる。
【００１２】
【発明の実施の形態】
以下、この発明に係る管継手および管継手構造の実施の形態を図面に基づいて説明する。
【００１３】
図１ないし図７は、本発明に係る管継手および管継手構造の一実施の形態を示す。図中符号１は、被連結部としての、例えばハンドホールの側壁である。２は、例えば電線（図示せず）が挿通される管としての波付管である。３は、前記波付管２が接続される管継手であり、継手本体４と、係止爪５ａと、押圧操作部５ｂと、工具挿入部４ａとを備えている。６は、管継手構造であって、前記管継手３と、前記被連結部としての、ハンドホールの側壁１とからなる。
【００１４】
ここで、継手本体４は、波付管２が挿入される挿入部４ｂを有するとともに、ハンドホールの側壁１に繋がるものである。具体的には、継手本体４は、筒状に形成されて、ハンドホールの側壁１を貫通しており、例えば、ハンドホールをコンクリートによって成形する際に、継手本体４が予め型内に配置されることで、この継手本体４は、側壁１（コンクリート）に埋設されるようにして繋がることとなる。そして、挿入部４ｂは、ハンドホールの外側Ｌ１となる一端側に形成されている。この挿入部４ｂの内周には、後述する爪部材５が収容される収容空間４ｃが形成されている。詳細には、この収容空間４ｃは、挿入部４ｂの前面４ｄから内周側を若干奥に入った位置に、ほぼ全周が窪むようにして形成されている。また、継手本体４は、ハンドホールの内側Ｌ２となる他端側に、ベルマウス部４ｅを有しており、このベルマウス部４ｅによって、管継手３からハンドホールの内側Ｌ２に引き出される電線が保護される。
【００１５】
係止爪５ａは、挿入部４ｂに設けられて、その挿入部４ｂに挿入された波付管２（詳細には、この波付管２の凹条２ａからなる被係止部Ｋ）と係合することで、波付管２を抜け止めするものである。この係止爪５ａは、継手本体４とは別体となる爪部材５に備わっている。この爪部材５は、例えば、ポリアセタール樹脂等の合成樹脂からなり、図４に示すように、環状の一部が分断された形状であって、弾性的に拡径可能であるとともに縮径可能となっている。そして、係止爪５ａは、爪部材５の内周側に、互いに向かい合うようにして二つ形成されている。また、爪部材５は、継手本体４の収容空間４ｃ内に周方向の回動が防止されて配置される。すなわち、爪部材５は、収容空間４ｃ内に収容されたとき、爪部材５における環状の一部が分断されたその分断部５ｃが、収容空間４ｃ内に突出して形成された回り止め部４ｆと嵌合することで、周方向の回動が防止される。また、爪部材５は、拡径すべく、継手本体４の挿入部４ｂに挿入される波付管２に押圧される被押圧面５ｄ備えている。この被押圧面５ｄは、各係止爪５ａにおける周方向両側に、凸状に湾曲して形成されている。そして、波付管２が継手本体４の挿入部４ｂに挿入される過程で、爪部材５の拡径した径が戻るようにして、この爪部材５の係止爪５ａが波付管２（詳細には、この波付管２の被係止部Ｋ）に係合するようになっている。
【００１６】
押圧操作部５ｂは、その押圧操作部５ｂが工具７に押圧されることで、係止爪５ａが、波付管２（詳細には、被係止部Ｋ）から後退して、その波付管２（被係止部Ｋ）との係合が解除されるものである。そして、この押圧操作部５ｂは、各係止爪５ａにおける周方向中央に、被押圧面５ｄ、５ｄよりも窪むようにして傾斜して形成されている。
【００１７】
工具挿入部４ａは、継手本体４の挿入部４ｂに、その挿入部４ｂの前面４ｄに臨んで形成されている。そして、この工具挿入部４ａに、波付管２（詳細には、被係止部Ｋ）と爪部材５の係止爪５ａとの係合を解除するための工具７が、挿入部４ｂの前面４ｄから挿入可能となっている。具体的には、工具挿入部４ａは、挿入部４ｂの先端部分であって、押圧操作部５ｂ、５ｂと対向する二つの位置に、挿入部４ｂの前面４ｄから収容空間４ｃに通ずるようにして、挿入部４ｂの内周に窪んで形成されている。
【００１８】
そして、この管継手３を用いた管継手構造６においては、管継手３は、継手本体４が、ハンドホールの側壁１に、埋設されるようにして繋がっている。このとき、管継手３は、挿入部４ｂの前面４ｄが、ハンドホールの側壁１の表面１ａ（ハンドホールの外側Ｌ１の表面）と面一となり、そして、ベルマウス部４ｅの端面４ｇが、側壁１の表面１ｂ（ハンドホールの内側Ｌ２の表面）と面一となっている。なお、８は、波付管２の凹条２ａに嵌められたパッキングであり、この波付管２が、継手本体４の挿入部４ｂに挿入されると、その挿入部４ｂの内周と密接するようになっている。
【００１９】
次に、以上の構成からなる管継手３および管継手構造６の作用効果について説明する。この管継手３および管継手構造６によると、波付管２を、側壁１に繋がる継手本体４の挿入部４ｂに挿入すると、波付管２が、爪部材５に備わる被押圧面５ｄ、５ｄを押圧し、爪部材５は、拡径する。そして、さらに、波付管２を挿入部４ｂに挿入していくと、爪部材５の拡径した径が戻るようにして、係止爪５ａ、５ａが波付管２（詳細には、被係止部Ｋ）に係合し、波付管２は抜け止めされる。こうして、波付管２は、管継手３に接続されるとともに、この管継手３を介して側壁１に連結される。ここで、爪部材５は、継手本体４の収容空間４ｃ内に周方向の回動が防止されて配置されており、工具挿入部４ａ、４ａが、継手本体４の周方向の一部に備わるにも拘わらず、その工具挿入部４ａ、４ａに対する押圧操作部５ｂ、５ｂの周方向の位置を、同位置に保つことができる。
【００２０】
そして、継手本体４には、挿入部４ｂの前面４ｄに臨んで工具挿入部４ａが形成されており、この工具挿入部４ａに、工具７を、挿入部４ｂの前面４ｄ側から挿入して、その工具７によって押圧操作部５ｂを押圧することで、係止爪５ａが波付管２（詳細には、被係止部Ｋ）から後退する。こうして、波付管２（被係止部Ｋ）と係止爪５ａとの係合が解除され、波付管２を継手本体４から取り外すことができる。そして、このように、工具挿入部４ａは、挿入部４ｂの前面４ｄに臨んで形成されており、継手本体４が、図１に示すように、側壁１（具体的には、側壁１を形成するコンクリート）に埋設されて、挿入部４ｂの前面４ｄが、側壁１の表面１ａと面一となっている場合であっても、工具７を、工具挿入部４ａに挿入することができ、波付管２（詳細には、被係止部Ｋ）と係止爪５ａとの係合を解除して、波付管２を継手本体４から取り外すことができる（図６、図７参照）。こうして、この管継手３（管継手構造６）によれば、継手本体４、係止爪５ａ、そして挿入部４ｂの前面４ｄに臨む工具挿入部４ａという簡単な構造で、波付管２の取外しを可能にすることができる。
【００２１】
また、押圧操作部５ｂは、係止爪５ａに備わっているので、工具７によるこの押圧操作部５ｂの押圧が、係止爪５ａに直接作用し、係止爪５ａが、波付管２（詳細には、被係止部Ｋ）から容易に後退し、その係合が解除される。したがって、波付管２を継手本体４から簡単に取り外すことができる。
【００２２】
また、係止爪５ａを備えた爪部材５は、継手本体４の挿入部４ｂの内周に形成された収容空間４ｃに収容されている。このように、係止爪５ａを継手本体４とは分離して形成することで、継手本体４や係止爪５ａの製造が容易となる。しかも、継手本体４とは別体となった爪部材５が、継手本体４の収容空間４ｃに収容されることで、爪部材５が、側壁１（コンクリート）に直接埋設されることはなく、爪部材５、すなわち係止爪５ａの機能を損なうことがない。
【００２３】
なお、本発明は、上述した実施の形態に限定されるわけではなく、その他種々の変更が可能である。例えば、継手本体４あるいは管継手３は、ハンドホールのコンクリートの打設時にそのコンクリートに埋設されるが、ハンドホールの成形後に、そのハンドホールの側壁１に貫通孔を穿設し、その貫通孔に継手本体４あるいは管継手３を挿入固定してもよい。
【００２４】
また、被連結部は、ハンドホールの側壁１でなくとも、このハンドホールやマンホール等の地中埋設箱等の、側壁、底壁等であってもよい。さらに、継手本体４は、その一端にのみ挿入部４ｂを有しているが、他端にも挿入部を設けることで、一方の管（波付管２）を、他方の管に連結するようにしてもよい。そして、この場合には、管継手３が、梁等を貫通するように配備されてもよく、また、梁等を貫通することなく、そのままの状態で床下等の空間部に配備されてもよい。
【００２５】
また、継手本体４は、ハンドホールの側壁１と一体であってもよい。すなわち、側壁１自身に、波付管２が挿入される挿入部４ｂ、工具７が挿入可能となる工具挿入部４ａ、そして爪部材５が収容される収容空間４ｃを形成してもよい。
【００２６】
また、参考例ではあるが、管は、波付管２でなくとも、凹条２ａ、２ａを有しない、円筒状の管であってもよい。そして、この場合、係止爪５ａは、管の外周面に食い付くようにして係合することとなる。
【００２７】
また、参考例ではあるが、爪部材５における押圧操作部５ｂは、被押圧面５ｄよりも窪むようにして形成されているが、被押圧面５ｄと同一面となるようにして形成されてもよい。また、押圧操作部５ｂは、係止爪５ａに備わらなくとも、係止爪５ａとは離れた位置に備わっていてもよい。
【００２８】
また、参考例ではあるが、係止爪５ａは、継手本体４とは別体となる爪部材５に備わっているが、継手本体４と一体となって形成されていてもよい。
【００２９】
また、工具挿入部４ａは、継手本体４における挿入部４ｂの、周方向の一部に形成されているが、全周に形成されてもよい。
【００３０】
【発明の効果】
以上、詳述したところから明らかなように、この発明に係る管継手および管継手構造によれば、次の効果がある。
【００３１】
請求項１および２に記載された管継手によれば、継手本体、係止爪、そして継手本体における挿入部の前面に臨む工具挿入部という簡単な構造で、波付管の取外しを可能にすることができる。
【００３２】
【００３３】
また、請求項３に記載された管継手によれば、請求項１または２の効果に加えて、工具による押圧操作部の押圧が、係止爪に直接作用することで、係止爪が波付管から容易に後退し、その係合が解除されるので、波付管を継手本体から簡単に取り外すことができる。
【００３４】
【００３５】
【００３６】
請求項４に記載された管継手構造によれば、請求項１ないし３のいずれか１項の効果に加えて、継手本体が、被連結部に埋設されるにも拘わらず、工具を、工具挿入部に挿入することができ、波付管を継手本体から取り外すことができる。
【図面の簡単な説明】
【図１】この発明に係る管継手および管継手構造の一実施の形態を示す、断面図である。
【図２】同じく、管継手の断面図である。
【図３】同じく、図２におけるＡ矢視図である。
【図４】同じく、爪部材の平面図である。
【図５】同じく、図４におけるＢ−Ｂ線による拡大断面図である。
【図６】同じく、工具を工具挿入部に挿入した状態の断面図である。
【図７】同じく、図６におけるＣ−Ｃ線による拡大断面図である。
【符号の説明】
１側壁（被連結部）１ａ表面
２波付管３管継手
４継手本体４ａ工具挿入部
４ｂ挿入部４ｃ収容空間
４ｄ前面５爪部材
５ａ係止爪５ｂ押圧操作部
５ｄ被押圧面６管継手構造
７工具[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pipe joint to which pipes are connected and a pipe joint structure.
[0002]
[Prior art]
Conventionally, for example, a joint described in Japanese Patent Application Laid-Open No. 2000-161564 has been known as a pipe joint fixed to a hand hole. This joint was provided with the 1st cylinder embedded in the hand hole as a to-be-connected part, and the 2nd cylinder attached to the edge part of a corrugated pipe. The corrugated tube was connected to the hand hole by inserting the second cylinder into the first cylinder. At this time, the 1st cylinder and the 2nd cylinder are connected by the stop ring in the 1st cylinder, and the 2nd cylinder and the corrugated pipe are those 2nd cylinders. In addition, they were connected by a stopper such as a half-collar covering the outer periphery of the corrugated tube. The second cylinder cannot be removed from the first cylinder embedded in the hand hole. Instead, the second cylinder and the corrugated pipe appear outside the hand hole. The corrugated tube could be removed by removing the stopper.
[0003]
[Problems to be solved by the invention]
By the way, in the conventional joint, in order to make the corrugated tube detachable from the joint, the joint must be separated into a first cylinder and a second cylinder. did not become.
[0004]
The present invention has been made to solve the above-described conventional drawbacks, and an object of the present invention is to provide a pipe joint and a pipe joint structure that allow a corrugated pipe to be removed with a simple structure. There is to do.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the pipe joint and pipe joint structure according to the present invention have the following configuration. That is,
The pipe joint according to the first aspect of the present invention is a pipe joint to which a corrugated pipe is connected, and is formed on a joint body having an insertion portion into which the corrugated pipe is inserted, and an inner periphery of the insertion portion. And a claw member accommodated in the accommodated storage space . Here, the claw member has a shape in which a part of an annular shape is divided, and can be elastically expanded in diameter, and is disposed in the accommodation space while preventing rotation in the circumferential direction. Further, the claw member includes a pressed surface that is pressed by a corrugated tube inserted into the insertion portion in order to expand the diameter, and the claw member has the corrugated tube on an inner peripheral side thereof. In the process of being inserted into the insertion portion, a locking claw that engages with the corrugated tube and prevents the corrugated tube from being pulled out is formed so that the diameter of the claw member is increased. . Further, in the prior SL fitting body, so as to face the front surface of the insertion portion, a tool for releasing the engagement between the locking claws and with the wave tube, it can be inserted from the front side of the insertion portion A tool insertion portion is formed. Then, the claw member is depressed by the tool so that the engagement portion is retracted from the corrugated tube so that the engagement is released, and the pressing operation portion is recessed from the pressed surface. Inclined.
[0006]
Thereby, if a corrugated pipe is inserted in the insertion part of a joint main part, a corrugated pipe will press the to-be-pressed surface with which a nail | claw member is equipped, and a nail | claw member will expand in diameter. Further, when the corrugated tube is further inserted into the insertion portion, the diameter of the claw member is increased so that the diameter of the claw member is returned, and the locking claw is engaged with the corrugated tube, so that the corrugated tube is prevented from coming off. . Thus, corrugated tube is connected to the pipe joint. The claw member is arranged in the housing space of the joint body so as to be prevented from rotating in the circumferential direction, and the tool insertion portion is provided even in a part of the joint body in the circumferential direction. The circumferential position of the pressing operation portion with respect to the insertion portion can be maintained at the same position. Here, in the joint body, a tool insertion portion is formed facing the front surface of the insertion portion, and a tool is inserted into the tool insertion portion from the front side of the insertion portion, and the pressing operation portion is moved by the tool. By pressing, the locking claw is retracted from the corrugated tube and the engagement is released. Thus, a corrugated pipe, by releasing the engagement between the engaging pawl of the pipe joint, it is possible to remove the corrugated tube from the joint body. Thus, the tool insertion portion is formed facing the front surface of the insertion portion, for example, the joint body is embedded in concrete, and the front surface of the insertion portion is flush with the surface of the concrete. Even in this case, the tool can be inserted into the tool insertion portion.
[0007]
Moreover, the pipe joint which concerns on invention of Claim 2 is a pipe joint of Claim 1, The said press operation part is extended outside from the said to-be-pressed surface.
[0008]
Moreover, the pipe joint which concerns on invention of Claim 3 is a pipe joint of Claim 1 or 2, WHEREIN: The said press operation part is equipped with the said latching claw. Thereby, the pressing of the pressing operation part by the tool directly acts on the locking claw, and the locking claw easily retracts from the corrugated tube.
[0009]
[0010]
[0011]
According to a fourth aspect of the present invention, there is provided a pipe joint structure comprising the pipe joint according to any one of the first to third aspects and a connected portion connected so that the joint body is embedded. In the pipe joint, the front surface of the insertion portion is flush with the surface of the connected portion. Thus, although the joint body is embedded in the coupled part, the tool insertion part is formed facing the front surface of the insertion part, so that the tool can be inserted into the tool insertion part. , to release the corrugated tube, the engagement of the locking pawl of the pipe joint, it is possible to remove the corrugated tube from the joint body.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a pipe joint and a pipe joint structure according to the present invention will be described below with reference to the drawings.
[0013]
1 to 7 show an embodiment of a pipe joint and pipe joint structure according to the present invention. Reference numeral 1 in the figure denotes a side wall of a handhole, for example, as a connected portion. 2 is a corrugated tube as a tube through which an electric wire (not shown) is inserted, for example. Reference numeral 3 denotes a pipe joint to which the corrugated pipe 2 is connected, and includes a joint main body 4, a locking claw 5a, a pressing operation part 5b, and a tool insertion part 4a. Reference numeral 6 denotes a pipe joint structure, which includes the pipe joint 3 and the side wall 1 of the handhole as the connected portion.
[0014]
Here, the joint body 4 has an insertion portion 4b into which the corrugated tube 2 is inserted, and is connected to the side wall 1 of the handhole. Specifically, the joint body 4 is formed in a cylindrical shape and penetrates the side wall 1 of the handhole. For example, when the handhole is formed of concrete, the joint body 4 is arranged in the mold in advance. Thus, the joint body 4 is connected so as to be embedded in the side wall 1 (concrete). And the insertion part 4b is formed in the one end side used as the outer side L1 of a handhole. An accommodation space 4c for accommodating a later-described claw member 5 is formed on the inner periphery of the insertion portion 4b. Specifically, the accommodation space 4c is formed so that the entire circumference is recessed at a position slightly inward from the front surface 4d of the insertion portion 4b. Further, the joint body 4 has a bell mouth portion 4e on the other end side which becomes the inner side L2 of the hand hole, and an electric wire drawn from the pipe joint 3 to the inner side L2 of the hand hole by the bell mouth portion 4e. Protected.
[0015]
The locking claw 5a is provided in the insertion portion 4b, and is engaged with the corrugated tube 2 inserted in the insertion portion 4b (specifically, the locked portion K formed of the recess 2a of the corrugated tube 2). By combining, the corrugated tube 2 is prevented from coming off. The locking claw 5 a is provided in a claw member 5 that is a separate body from the joint body 4. The claw member 5 is made of, for example, a synthetic resin such as polyacetal resin, and has a shape in which a part of the annular shape is divided as shown in FIG. 4, and can be elastically expanded and reduced in diameter. It has become. Then, two locking claws 5 a are formed on the inner peripheral side of the claw member 5 so as to face each other. Further, the claw member 5 is disposed in the accommodation space 4 c of the joint body 4 while preventing circumferential rotation. That is, when the claw member 5 is accommodated in the accommodation space 4c, the detent portion 5c, in which the annular part of the claw member 5 is divided, protrudes into the accommodation space 4c. By fitting, rotation in the circumferential direction is prevented. Further, the claw member 5 includes a pressed surface 5d that is pressed by the corrugated tube 2 that is inserted into the insertion portion 4b of the joint body 4 in order to increase the diameter. The pressed surface 5d is formed to be convexly curved on both sides in the circumferential direction of each locking claw 5a. Then, in the process in which the corrugated tube 2 is inserted into the insertion portion 4b of the joint body 4, the diameter of the claw member 5 is increased so that the engaging claw 5a of the claw member 5 is connected to the corrugated tube 2 ( In detail, it engages with the locked portion K) of the corrugated tube 2.
[0016]
When the pressing operation portion 5b is pressed by the tool 7, the pressing claw 5a moves backward from the corrugated tube 2 (specifically, the locked portion K), and the corrugation The engagement with the tube 2 (the locked portion K) is released. And this press operation part 5b is inclined and formed in the circumferential direction center in each latching claw 5a so that it may become depressed rather than the to-be-pressed surfaces 5d and 5d.
[0017]
The tool insertion portion 4a is formed on the insertion portion 4b of the joint body 4 so as to face the front surface 4d of the insertion portion 4b. A tool 7 for releasing the engagement between the corrugated tube 2 (specifically, the locked portion K) and the locking claw 5a of the claw member 5 is provided on the tool insertion portion 4a. It can be inserted from the front surface 4d. Specifically, the tool insertion portion 4a is a tip portion of the insertion portion 4b, and passes through the receiving space 4c from the front surface 4d of the insertion portion 4b at two positions facing the pressing operation portions 5b and 5b. The recess is formed in the inner periphery of the insertion portion 4b.
[0018]
And in the pipe joint structure 6 using this pipe joint 3, the pipe joint 3 is connected so that the joint main body 4 is buried in the side wall 1 of the handhole. At this time, in the pipe joint 3, the front surface 4d of the insertion portion 4b is flush with the surface 1a of the handhole side wall 1 (the surface of the outer side L1 of the handhole), and the end surface 4g of the bell mouth portion 4e is the side wall. 1 is flush with the surface 1b (the surface of the inner side L2 of the handhole). In addition, 8 is a packing fitted in the concave strip 2a of the corrugated tube 2. When the corrugated tube 2 is inserted into the insertion portion 4b of the joint body 4, it is in close contact with the inner periphery of the insertion portion 4b. It is supposed to be.
[0019]
Next, the effect of the pipe joint 3 and the pipe joint structure 6 which consist of the above structure is demonstrated. According to the pipe joint 3 and the pipe joint structure 6, when the corrugated pipe 2 is inserted into the insertion portion 4 b of the joint body 4 connected to the side wall 1, the corrugated pipe 2 is provided with the pressed surfaces 5 d and 5 d provided on the claw member 5. The claw member 5 is expanded in diameter. Further, when the corrugated tube 2 is inserted into the insertion portion 4b, the diameter of the claw member 5 is increased so that the engaging claws 5a and 5a are connected to the corrugated tube 2 (in detail, The wavy tube 2 is prevented from coming off by engaging with the locking portion K). Thus, the corrugated pipe 2 is connected to the pipe joint 3 and is connected to the side wall 1 through the pipe joint 3. Here, the claw member 5 is disposed in the accommodation space 4 c of the joint body 4 so as to be prevented from rotating in the circumferential direction, and the tool insertion portions 4 a and 4 a are provided in a part of the joint body 4 in the circumferential direction. Nevertheless, the circumferential position of the pressing operation portions 5b and 5b with respect to the tool insertion portions 4a and 4a can be maintained at the same position.
[0020]
The joint body 4 is formed with a tool insertion portion 4a facing the front surface 4d of the insertion portion 4b, and a tool 7 is inserted into the tool insertion portion 4a from the front surface 4d side of the insertion portion 4b. By pressing the pressing operation portion 5b with the tool 7, the locking claw 5a moves backward from the corrugated tube 2 (specifically, the locked portion K). Thus, the engagement between the corrugated pipe 2 (the locked portion K) and the locking claw 5a is released, and the corrugated pipe 2 can be detached from the joint body 4. Thus, the tool insertion portion 4a is formed facing the front surface 4d of the insertion portion 4b, and the joint body 4 is formed with the side wall 1 (specifically, the side wall 1 is formed as shown in FIG. 1). Even if the front surface 4d of the insertion portion 4b is flush with the surface 1a of the side wall 1, the tool 7 can be inserted into the tool insertion portion 4a, The corrugated pipe 2 can be detached from the joint body 4 by releasing the engagement between the auxiliary pipe 2 (specifically, the locked portion K) and the locking claw 5a (see FIGS. 6 and 7). Thus, according to this pipe joint 3 (pipe joint structure 6), the corrugated pipe 2 can be removed with a simple structure of the joint body 4, the locking claw 5a, and the tool insertion portion 4a facing the front surface 4d of the insertion portion 4b. Can be made possible.
[0021]
Further, since the pressing operation portion 5b is provided in the locking claw 5a, the pressing of the pressing operation portion 5b by the tool 7 directly acts on the locking claw 5a, and the locking claw 5a is connected to the corrugated tube 2 ( Specifically, it is easily retracted from the locked portion K) and the engagement is released. Therefore, the corrugated pipe 2 can be easily detached from the joint body 4.
[0022]
The claw member 5 provided with the locking claw 5a is accommodated in an accommodation space 4c formed on the inner periphery of the insertion portion 4b of the joint body 4. In this way, by forming the locking claw 5a separately from the joint body 4, the joint body 4 and the locking claw 5a can be easily manufactured. Moreover, the claw member 5 that is separated from the joint body 4 is accommodated in the accommodation space 4c of the joint body 4, so that the claw member 5 is not directly embedded in the side wall 1 (concrete), The function of the claw member 5, that is, the locking claw 5a is not impaired.
[0023]
In addition, this invention is not necessarily limited to embodiment mentioned above, A various other change is possible. For example, the joint body 4 or the pipe joint 3 is embedded in the concrete of the hand hole when the concrete is placed. After forming the hand hole, a through hole is formed in the side wall 1 of the hand hole. Alternatively, the joint body 4 or the pipe joint 3 may be inserted and fixed.
[0024]
Further, the connected portion may not be the side wall 1 of the handhole, but may be a side wall, a bottom wall, or the like such as an underground box such as a handhole or a manhole. Further, the joint body 4 has the insertion portion 4b only at one end thereof, but by providing an insertion portion at the other end, one pipe (the corrugated pipe 2) is connected to the other pipe. It may be. In this case, the pipe joint 3 may be provided so as to penetrate the beam or the like, or may be provided in a space portion such as under the floor as it is without penetrating the beam or the like. .
[0025]
Further, the joint body 4 may be integrated with the side wall 1 of the handhole. That is, an insertion portion 4b into which the corrugated tube 2 is inserted, a tool insertion portion 4a into which the tool 7 can be inserted, and an accommodation space 4c in which the claw member 5 is accommodated may be formed in the side wall 1 itself.
[0026]
Moreover, although it is a reference example, the pipe | tube may not be the corrugated pipe | tube 2, but may be a cylindrical pipe | tube which does not have the concave strips 2a and 2a. In this case, the locking claw 5a engages so as to bite the outer peripheral surface of the pipe.
[0027]
Moreover, although it is a reference example, although the press operation part 5b in the nail | claw member 5 is formed so that it may become depressed rather than the pressed surface 5d, it may be formed so that it may become the same surface as the pressed surface 5d. Further , the pressing operation portion 5b may be provided at a position away from the locking claw 5a even if it is not provided in the locking claw 5a.
[0028]
Moreover, although it is a reference example, although the latching claw 5 a is provided in the claw member 5 that is a separate body from the joint body 4, it may be formed integrally with the joint body 4.
[0029]
Moreover, although the tool insertion part 4a is formed in a part of circumferential direction of the insertion part 4b in the coupling main body 4, it may be formed in the perimeter.
[0030]
【The invention's effect】
As is apparent from the above description, the pipe joint and pipe joint structure according to the present invention have the following effects.
[0031]
According to the pipe joint described in claims 1 and 2 , it is possible to remove the corrugated pipe with a simple structure of the joint main body, the locking claw, and the tool insertion portion facing the front surface of the insertion portion in the joint main body. be able to.
[0032]
[0033]
According to the pipe joint described in claim 3, in addition to the effect of claim 1 or 2, the pressing of the pressing operation portion by the tool directly acts on the locking claw, so that the locking claw is waved. The corrugated pipe can be easily removed from the joint body because it is easily retracted from the attached pipe and the engagement is released.
[0034]
[0035]
[0036]
According to the pipe joint structure described in claim 4 , in addition to the effect of any one of claims 1 to 3 , the tool is used in spite of the fact that the joint body is embedded in the coupled portion. The corrugated pipe can be removed from the joint body.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of a pipe joint and pipe joint structure according to the present invention.
FIG. 2 is also a cross-sectional view of a pipe joint.
3 is a view taken along arrow A in FIG.
FIG. 4 is also a plan view of the claw member.
5 is an enlarged cross-sectional view taken along line BB in FIG.
FIG. 6 is a cross-sectional view showing a state where the tool is inserted into the tool insertion portion.
7 is an enlarged cross-sectional view taken along line CC in FIG.
[Explanation of symbols]
1 sidewall (the connected portion) 1a surface 3 fitting tube with two waves 4 joint body 4a tool insertion part 4b insertion portion 4c accommodating space 4d front 5 pawl members 5a engaging pawl 5b pressing part 5d pressed surface 6 fitting structure 7 tools

Claims

A pipe joint to which a corrugated pipe is connected,
A joint body having an insertion part into which the corrugated pipe is inserted , and a claw member accommodated in an accommodation space formed on the inner periphery of the insertion part,
The claw member has a shape in which a part of an annular shape is divided, can be elastically expanded in diameter, and is disposed in the housing space while preventing rotation in the circumferential direction.
The claw member includes a pressed surface that is pressed against a corrugated tube inserted into the insertion portion in order to expand the diameter, and the claw member includes the corrugated tube on the inner peripheral side thereof. In the process of being inserted into the insertion portion, a locking claw that engages with the corrugated tube and prevents the corrugated tube from being formed is formed so that the diameter of the claw member that has expanded is returned .
Wherein the fitting body, so as to face the front surface of the insertion portion, a tool for releasing the engagement between the locking claws and with the wave tube, insertable from the front side of the insertion portion to become the tool insertion part Formed,
When the tool is pressed by the tool, the claw member is inclined so that the pressing claw is retracted from the corrugated tube and the engagement is released so that the claw member is recessed from the pressed surface. A pipe joint characterized by being formed .

In the pipe joint according to claim 1,
The said press operation part is extended outside from the said to-be-pressed surface, The pipe joint characterized by the above-mentioned.

In the pipe joint according to claim 1 or 2,
The pipe joint according to claim 1, wherein the pressing operation portion is provided in the locking claw.

A pipe joint structure comprising the pipe joint according to any one of claims 1 to 3 and a connected portion connected so that the joint main body is buried,
The pipe joint structure according to claim 1, wherein a front surface of the insertion portion is flush with a surface of the connected portion.