JP5244266B2

JP5244266B2 - Pipe connection device and pipe connection device

Info

Publication number: JP5244266B2
Application number: JP2008288275A
Authority: JP
Inventors: 賢広瀬
Original assignee: Mirai Kogyo KK
Current assignee: Mirai Kogyo KK
Priority date: 2008-11-10
Filing date: 2008-11-10
Publication date: 2013-07-24
Anticipated expiration: 2028-11-10
Also published as: JP2010112545A

Description

本発明は、一対の半割体または一対の半割部で形成され、外面に軸方向に連続する凹凸が形成された波付管が接続される管接続具及び管接続装置に関するものである。 The present invention relates to a pipe connection device and a pipe connection device in which corrugated pipes formed by a pair of halves or a pair of halves and having concavities and convexities continuous in the axial direction on the outer surface are connected.

従来より、戸建て、集合住宅等においては、ケーブル等が配線され、また、台所、浴室、洗面化粧台、給湯器等に給水、給湯を行なうために給水管、給湯管等の通水管が配管されている。これらのケーブルや通水管等は、一般に、紫外線による劣化防止や外部からの傷付き防止などのため、配線、配管経路のほぼ全域に渡って波付鞘管内に挿通され保護されている。また、通水管等が給湯器等に接続される周辺箇所においては、波付鞘管の端部から引き出された通水管の露出部分を別途の波付保護管で覆うことも行なわれている。これらの波付管の端部には一般に管接続具が取付けられている。波付管の管接続具としては、接続作業性等の点から一対の半割体からなる筒状体で形成されたものが使用されることも多い。この半割構造の管接続具は、一対の半割体を閉じることによって接続孔が形成されることに伴い、その周縁のフランジが波付管の端部の外面の凹部に嵌入することにより、波付管を抜止め状態に接続する。この種の半割構造の管接続具として、例えば、特開２００３−１７６８８４公報に掲載のものが知られている。 Conventionally, in detached houses and apartment houses, cables etc. are wired, and water pipes such as water supply pipes and hot water supply pipes are provided to supply water and hot water to the kitchen, bathroom, bathroom vanity, water heater, etc. ing. These cables, water pipes, and the like are generally inserted and protected in a corrugated sheath pipe over almost the entire area of the wiring and piping paths in order to prevent deterioration due to ultraviolet rays and damage from the outside. Moreover, in the peripheral location where a water pipe etc. are connected to a water heater etc., the exposed part of the water pipe pulled out from the edge part of a corrugated sheath pipe is also covered with another wave protection pipe. A pipe connector is generally attached to the end of these corrugated pipes. In many cases, a corrugated pipe connector is formed of a cylindrical body composed of a pair of halves in view of connection workability and the like. The pipe connector of this half structure has a connection hole formed by closing a pair of halves, and the peripheral flange fits into the recess on the outer surface of the end portion of the corrugated pipe. Connect the corrugated tube to the retaining state. As this type of pipe connector having a halved structure, for example, one disclosed in Japanese Patent Application Laid-Open No. 2003-176884 is known.

前記公報に掲載の管接続具は、これを構成する筒状体が円筒形状をなし、二つの分割筒部材からなる。そして、二つの分割筒部材は、周方向の一端側がヒンジにより連結され、周方向の他端側が連結部材により連結されている。更に、連結部材は分割筒部材を貫通するボルト体にナットが締付けられることにより、分割筒部材の周方向の端部を閉じた状態に保持するようになっている。この管接続具は、その筒状体により波付管等の管体どうしを接続している。
特開２００３−１７６８８４公報 In the pipe connector disclosed in the above publication, the cylindrical body constituting the pipe connector has a cylindrical shape and is composed of two divided cylindrical members. And the two division | segmentation cylinder members are connected with the one end side of the circumferential direction by the hinge, and the other end side of the circumferential direction is connected by the connection member. Further, the connecting member is configured to hold the circumferential end of the divided cylinder member in a closed state by tightening a nut to a bolt body that penetrates the divided cylinder member. This pipe connection tool connects pipes such as corrugated pipes by the cylindrical body.
JP 2003-176684 A

しかし、前記管接続具等に接続される波付管は、各種規格品があることに加え、製造メーカー間で規格が統一されていないことから、通常、管径などその大きさは各種相違している。また、同一規格品であっても外面が凹凸の波付面となっている形状上、製造時に管径にばらつきを生じ易い。このため、一種類の管接続具のみで管径が各種異なる波付管に対応して接続することはできなかった。したがって、管接続具は波付管の管径の相違に対応して複数種類を用意しなければならず、不経済であった。また、管接続具に接続することはできたとしても、製造による管径のばらつき等により、接続孔の周縁が波付管の外面の凹部に十分に嵌入せず、安定して接続することができないこともあった。 However, the corrugated pipes connected to the pipe fittings and the like have various standard products and the standards are not standardized among manufacturers. ing. Even in the same standard product, due to the shape of the corrugated surface of the outer surface, the tube diameter tends to vary during manufacturing. For this reason, it was not possible to connect to corrugated pipes having various pipe diameters with only one type of pipe connector. Therefore, a plurality of types of pipe fittings must be prepared corresponding to the difference in the diameter of the corrugated pipe, which is uneconomical. Moreover, even if it can be connected to the pipe connector, the peripheral edge of the connection hole does not fully fit into the recess on the outer surface of the corrugated pipe due to variations in the pipe diameter due to manufacturing, etc. There was something I couldn't do.

そこで、本発明は、管径の異なる波付管に対応してこれらの波付管を安定して接続することができる管接続具及び管接続装置の提供を課題とするものである。 Then, this invention makes it a subject to provide the pipe connection tool and pipe connection apparatus which can connect these corrugated pipes stably corresponding to corrugated pipes from which a pipe diameter differs.

請求項１の管接続具は、一対の半割体からなりまたは一対の半割部を備えた筒状体で形成され、外面に軸方向に連続する凹凸が形成された波付管が接続されるものである。この管接続具は、前記波付管が接続される接続孔と、前記波付管を径方向から移動させて前記接続孔内に配置可能とする半割の開口を該接続孔に形成する割面とを備えている。前記接続孔は、前記一対の半割体が閉じられることにより楕円形状または略楕円形状に形成されている。そして、前記接続孔は、その長軸が前記割面と直交する方向に形成されている。
The pipe connector according to claim 1 is formed of a pair of halves or a cylindrical body having a pair of halves, and connected to a corrugated pipe having an outer surface formed with continuous irregularities in the axial direction. Is. This pipe connector has a connection hole to which the corrugated pipe is connected, and a split hole that forms a half-opening in the connection hole that allows the corrugated pipe to be moved from the radial direction and disposed in the connection hole. With a surface. The connection hole is formed in an elliptical shape or a substantially elliptical shape by closing the pair of halves. And the said connection hole is formed in the direction where the major axis is orthogonal to the said split surface.

この構成により、波付管は、小径の場合は、楕円形状等の接続孔の短軸部分に真円またはそれに近い形状で接続される。一方、波付管の径が接続孔の短軸より大きい大径の場合は、波付管の接続端部を扁平に変形させることにより接続孔に接続することができる。したがって、大小の管径の波付管に対応して管接続具に接続させることができる。 With this configuration, when the corrugated tube has a small diameter, the corrugated tube is connected to the short axis portion of the connection hole having an elliptical shape or the like in a perfect circle or a shape close thereto. On the other hand, when the diameter of the corrugated tube is larger than the short axis of the connection hole, the corrugated tube can be connected to the connection hole by deforming the connection end of the corrugated tube into a flat shape. Therefore, it can be connected to the pipe connector corresponding to the corrugated pipe having a large or small pipe diameter.

そして、特に、接続孔の長軸は、この接続孔に半割の開口を形成する割面と直交する方向に形成されているので、大径の波付管を接続したときに、一対の半割体間または一対の半割部間の割面に隙間が生じるのを回避できる。即ち、大径の波付管の接続端部を偏平に変形させて接続孔に接続したとき、波付管はその弾性力により元の円管形状に復帰しようとするため、管接続具には、接続孔の短軸側において互いに反対方向に押し広げようとする拡開力が発生する。そこで、仮に、接続孔の長軸が筒状体の割面と同方向に形成されているとすれば、波付管の弾性復帰力が短軸側において互いに反対方向に生ずるため、割面に隙間が発生してしまうことがある。ところが、上述のように、接続孔の長軸は割面と直交する方向に形成されているので、波付管の弾性復帰力の加わる方向と割面を拡開する方向とは位相が９０度相違し、波付管の弾性復帰力は割面の拡開に対して何ら関係しないため、割面に隙間が発生するのが回避される。
In particular, since the long axis of the connection hole is formed in a direction orthogonal to the split surface that forms a half-opening in the connection hole, when a large-diameter corrugated pipe is connected, It is possible to avoid the occurrence of a gap in the split surface between the split bodies or between the pair of halves . That is, when the connecting end of a large-diameter corrugated tube is deformed flat and connected to the connection hole, the corrugated tube attempts to return to its original circular tube shape due to its elastic force. An expanding force is generated to push and spread the connecting holes in opposite directions on the short axis side of the connecting hole. Therefore, if the long axis of the connection hole is formed in the same direction as the split surface of the cylindrical body, the elastic return force of the corrugated tube is generated in the opposite direction on the short axis side. A gap may occur. However, as described above, since the long axis of the connection hole is formed in a direction orthogonal to the split surface, the direction in which the elastic return force of the corrugated tube is applied and the direction in which the split surface is expanded have a phase of 90 degrees. Unlikely, since the elastic restoring force of the corrugated tube has nothing to do with the expansion of the split surface, the generation of a gap in the split surface is avoided.

ここで、具体的には、前記波付管は、通水管等の配管材やケーブル等の配線を外側から覆って保護する。波付管は、その外面の凹部に、接続具の接続孔の周縁が嵌入して係合することにより前記接続孔に抜止め状態で接続される。
なお、接続具の接続孔は、楕円形状に限らず、略楕円形状、即ち、例えば両側の半円を２本の平行線で連結したトラック形状や小判形状などの、楕円に類似した形状のものとしてもよい。 Specifically, the corrugated pipe covers and protects piping materials such as water pipes and wirings such as cables from the outside. The corrugated tube is connected to the connection hole in a retaining state by inserting and engaging the peripheral edge of the connection hole of the connection tool in the concave portion on the outer surface thereof.
The connection hole of the connector is not limited to an elliptical shape, but has a substantially elliptical shape, that is, a shape similar to an ellipse, for example, a track shape or an oval shape in which semicircles on both sides are connected by two parallel lines. It is good.

更に、請求項１の管接続具は、一端側に、内部に通水管が挿通された鞘管が取着される鞘管取付部が設けられ、他端側に、前記筒状体の内部を挿通する通水管を引き出すための引出部が設けられ、前記筒状体の内部において前記鞘管取付部と前記引出部との間に、前記通水管の外周全体に当接する当接部が設けられている。
Furthermore, the tube connecting device according to claim 1, at one end side, a sheath tube attaching portion sheath tube water pipe is inserted therein is attached is provided on the other end, the interior of the tubular body A drawing part for pulling out the water pipe through which the water pipe is inserted is provided, and a contact part that contacts the entire outer periphery of the water pipe is provided between the sheath pipe mounting part and the drawing part inside the cylindrical body. It has been .

管接続具は、その内部を挿通する通水管が給湯器等の管継手に下方から接続されることがあり、その場合、管継手の内部に漏水が発生すると、それが水滴となって通水管の外面を伝って下降し、管接続具の引出部の引出口から管接続具内に浸入することとなる。しかし、管接続具は、鞘管取付部と引出部との間に通水管の外周全体に当接する当接部が設けられているので、通水管の外面を伝って引出口から管接続具の内部に浸入した水は、当接部より下流側の波付鞘管等に流れるのが防止される。 In a pipe connector, a water pipe that passes through the inside of the pipe connector may be connected to a pipe joint such as a water heater from below. In this case, if water leaks inside the pipe joint, it becomes water droplets and becomes a water pipe. It goes down along the outer surface of the pipe and enters into the pipe connector from the outlet of the lead-out portion of the pipe connector. However, since the pipe connector is provided with an abutting portion that abuts the entire outer periphery of the water conduit between the sheath tube attachment portion and the drawer portion, the pipe connector is connected from the outlet through the outer surface of the water conduit. The water that has entered the inside is prevented from flowing into the corrugated sheath tube or the like downstream of the contact portion.

加えて、前記接続孔は、鞘管取付部及び引出部の少なくとも一方に形成されており、引出部に形成された場合は、管接続具と給湯器等の管継手との間に通水管を保護する波付保護管が取付けられる。
In addition, the connection hole is formed in at least one of the sheath tube mounting portion and the drawer portion, and when formed in the drawer portion, a water pipe is provided between the pipe connector and a pipe joint such as a water heater. A corrugated protective tube is installed for protection.

請求項２の管接続具は、請求項１に記載の当接部に、通水管の外面に沿って圧接するリブが形成されたものである。
Pipe connector according to claim 2, the contact portion according to claim 1, in which the ribs for pressing along the outer surface of the water pipe is formed.

請求項３の管接続装置は、外面に軸方向に連続する凹凸が形成された大小２種類の径の波付管と、前記波付管が接続される管接続具とからなり、該管接続具は、一対の半割体または一対の半割部を備えた筒状体で形成され、請求項１の管接続具と同様の構成となっている。
Tube connecting apparatus according to claim 3 is composed of a large and small two kinds of diameter corrugated tube irregularities continuous in the axial direction is formed on the outer surface, a tube connector which tube with the wave Ru is connected, the tube connections The tool is formed of a cylindrical body having a pair of halves or a pair of halves, and has the same configuration as the pipe connector of claim 1.

請求項１の発明は、管接続具の接続孔が、楕円形状または略楕円形状に形成されているから、１種類で、大小径の異なる波付管を接続することができ、経済的であって、部品管理も楽になる。そして、特に、接続孔の長軸は、筒状体の割面と直交する方向に形成されているから、大径の波付管を接続したときでも、波付管の真円形状への弾性復帰力が起因することにより一対の半割体間または一対の半割部間の割面に隙間が発生してしまうのを防止することができる。これにより、割面に発生した隙間から異物が侵入したり、外観が低下したりするのを防止できる。また、接続具の内部に通水管の外面と当接して止水する半割孔からなる当接部を設けた場合は、割面に隙間が発生することによって止水性が低下するのを防止することができる。
In the invention of claim 1, since the connection hole of the pipe connector is formed in an elliptical shape or a substantially elliptical shape, one type of corrugated pipe having different large and small diameters can be connected, which is economical. This makes parts management easier. In particular, since the long axis of the connection hole is formed in a direction perpendicular to the split surface of the cylindrical body, even when a large-diameter corrugated tube is connected, the corrugated tube is elastic to a perfect circle shape. It is possible to prevent a gap from being generated in the split surface between the pair of halves or between the pair of halves due to the return force. Thereby, it can prevent that a foreign material penetrate | invades from the clearance gap which generate | occur | produced in the split surface, or an external appearance falls. Moreover, when the contact part which consists of a half hole which contacts the outer surface of a water flow pipe and stops water is provided in the inside of a connection tool, it prevents that a water stop falls by the clearance gap generating in a split surface. be able to.

更に、請求項１の発明は、鞘管取付部、引出部及び通水管の外周全体に当接する当接部が設けられているので、管継手等で発生した漏水が通水管の外面を伝って管接続具の引出口内に浸入してきても、下流側に更に流れ込むのを防止することができる。
Further, the invention of claim 1, the sheath tube attachment portion, the lead portion and the water pipe of the outer abutment portion is provided in contact with the entire Tei Runode, water leakage generated in the pipe joint or the like along the outer surface of the water pipe Even if it enters into the outlet of the pipe connector, it can be prevented from flowing further downstream.

請求項２の発明は、当接部に、通水管の外面に沿って圧接するリブが形成されているので、当接部と通水管との密接性が増し、止水効果を高めることができる。
In the invention according to claim 2 , since the rib that press-contacts along the outer surface of the water conduit is formed in the contact portion, the close contact between the contact portion and the water conduit increases, and the water stop effect can be enhanced. .

請求項３の発明は、大小２種類の径の波付管と、請求項１と同様の構成の管接続具とからなる。したがって、請求項１の管接続具と同様の効果を奏する。
The invention of claim 3 comprises a corrugated pipe having two kinds of large and small diameters and a pipe connector having the same configuration as that of claim 1. Therefore, the same effect as that of the pipe connector of claim 1 is obtained.

〈第一実施形態〉
まず、本発明の第一実施形態の管接続具を図１乃至図７に基づいて説明する。ここで、図１及び図２は前記管接続具を示し、図３及び図４は前記管接続具を展開した状態を示す。なお、第一及び第二実施形態において、管接続具は、給湯器の管継手に接続される通水管を保護する波付管が接続されるものを例示する。 <First embodiment>
First, a pipe connector according to a first embodiment of the present invention will be described with reference to FIGS. Here, FIGS. 1 and 2 show the pipe connector, and FIGS. 3 and 4 show a state where the pipe connector is developed. In addition, in 1st and 2nd embodiment, the pipe connection tool illustrates what connects the corrugated pipe | tube which protects the water flow pipe connected to the pipe joint of a water heater.

図１及び図５において、住宅の追い炊き機能付きの給湯器６４の底面には行きと戻りの通水のための２個の管継手６５が設けられている。これらの管継手６５にはそれぞれ給湯器６４からの温水を図示しない台所、浴室、トイレ、洗面等の給水栓に送るための通水管６１と、浴室や床暖房等から追い炊きするために給湯器６４に戻る通水管６１とが接続されている。これら両通水管６１はこれを保護するための合成樹脂製の波付管で形成された波付鞘管６３内に挿通されており、ペア管として２本を並列した状態で１本の波付鞘管６３内に収められている。２本の通水管６１は波付鞘管６３の端部から引き出された後２方向に分岐し、給湯器６４の管継手６５にそれぞれ接続されている。そして、波付鞘管６３の端部にはここから引き出された通水管６１とに跨って管接続具１が取付けられている。更に、通水管６１において管継手６５と管接続具１との間には、波付鞘管６３から管接続具１を経て外側に引き出されて露出している通水管６１を保護し、保温する遮熱管などの波付保護管６２が通水管６１の外側を覆って取付けられている。この管接続具１と波付保護管６２とは管接続装置を構成している。以下、各構成部材について具体的に説明する。 In FIG.1 and FIG.5, the two pipe joints 65 for the water flow of going and returning are provided in the bottom face of the water heater 64 with a home cooking function. Each of these pipe joints 65 has a water pipe 61 for sending hot water from a water heater 64 to a water tap such as a kitchen, a bathroom, a toilet, and a washbasin (not shown), and a water heater for additionally cooking from the bathroom or floor heating. A water pipe 61 returning to 64 is connected. These two water pipes 61 are inserted into a corrugated sheath pipe 63 formed of a corrugated pipe made of synthetic resin to protect this, and one corrugated pipe with two pipes in parallel as a pair pipe. It is stored in the sheath tube 63. The two water pipes 61 are drawn out from the end portion of the corrugated sheath pipe 63 and then branched in two directions, and are respectively connected to the pipe joint 65 of the water heater 64. And the pipe connector 1 is attached to the edge part of the corrugated sheath pipe 63 ranging over the water flow pipe 61 pulled out from here. Further, between the pipe joint 65 and the pipe connector 1 in the water pipe 61, the exposed water pipe 61 drawn out from the corrugated sheath pipe 63 through the pipe connector 1 to the outside is protected and kept warm. A corrugated protective tube 62 such as a heat shield tube is attached to cover the outside of the water flow tube 61. The tube connector 1 and the corrugated protective tube 62 constitute a tube connection device. Hereinafter, each component will be specifically described.

まず、前記通水管６１は、可撓性を有する架橋ポリエチレン管、ポリブテン管等の円管形状の硬質樹脂管からなり、内部を水道水、温熱水等の流体が流れる。
次に、２本の通水管６１を並列した状態で内部に一体に収容する波付鞘管６３は、ポリエチレン等の硬質樹脂で形成され、外面が凸部と凹部との凹凸面となっていて可撓性、屈曲性を有し、断面が略小判形状をなしている。波付鞘管６３は給湯器６４の管継手６５との接続端部周辺を除く通水管６１の配管経路全域に至ってその外側に外挿され、通水管６１の外側を覆って外部物体による通水管６１の傷付きや損傷を防止し、また、紫外線による劣化を防いでいる。
給湯器６４の管継手６５と管接続具１との間に取付けられている波付保護管６２は、硬質樹脂で形成され、可撓性、屈曲性を有するとともに、断面真円の管形状である円管形状をなしている。波付保護管６２は端部の外面の凹部に後述する管接続具１の接続孔７の周縁７ａが嵌入し係合することによりこの接続孔７に接続されるようになっている。この波付保護管６２は請求項の波付管に該当する。 First, the water flow pipe 61 is formed of a circular hard resin pipe such as a flexible cross-linked polyethylene pipe or polybutene pipe, and a fluid such as tap water or hot water flows through the inside.
Next, the corrugated sheath pipe 63 that integrally accommodates the two water pipes 61 in a parallel state is formed of a hard resin such as polyethylene, and the outer surface is an uneven surface of a convex portion and a concave portion. It has flexibility and bendability, and has a substantially oval cross section. The corrugated sheath pipe 63 reaches the entire piping path of the water pipe 61 excluding the periphery of the connection end portion with the pipe joint 65 of the water heater 64 and is externally attached to the outer side of the water pipe 61. 61 is prevented from being damaged or damaged, and is also prevented from being deteriorated by ultraviolet rays.
The corrugated protective pipe 62 attached between the pipe joint 65 of the water heater 64 and the pipe connector 1 is made of a hard resin, has flexibility and flexibility, and has a pipe shape with a perfect cross section. It has a certain circular pipe shape. The corrugated protective tube 62 is connected to the connection hole 7 by inserting and engaging a peripheral edge 7a of a connection hole 7 of the tube connector 1 described later in a concave portion on the outer surface of the end portion. The corrugated protective tube 62 corresponds to the corrugated tube of the claims.

次に、前記管接続具１は、図１乃至図４に示すように、割面１２を有する半割の筒状体に形成され、外壁２の管軸と直交する横断面の形状は略小判形状をなしている。管接続具１の管軸方向の一端部には、波付鞘管６３の端部が連結される鞘管取付部３が設けられ、その内部には波付鞘管６３の端部が挿通される略小判形状の鞘管取付孔４が設けられている。この鞘管取付孔４は波付鞘管６３の断面形状に合致させて略小判形状に形成されているとともに、波付鞘管６３の凸部の外面における外径より小さく、波付鞘管６３の凹部の底部の外表面である底面における外径より大きく形成されていて周縁４ａが波付鞘管６３の凹部に嵌入係止することにより波付鞘管６３が抜け止め状態に接続されるようになっている。 Next, as shown in FIGS. 1 to 4, the pipe connector 1 is formed in a half-cut cylindrical body having a split surface 12, and the shape of the cross section perpendicular to the pipe axis of the outer wall 2 is substantially oval. It has a shape. One end of the tube connector 1 in the tube axis direction is provided with a sheath tube mounting portion 3 to which an end portion of the corrugated sheath tube 63 is coupled, and an end portion of the corrugated sheath tube 63 is inserted therein. A substantially oval shaped sheath tube mounting hole 4 is provided. The sheath tube mounting hole 4 is formed in a substantially oval shape so as to match the cross-sectional shape of the corrugated sheath tube 63, and is smaller than the outer diameter of the outer surface of the convex portion of the corrugated sheath tube 63. The corrugated sheath tube 63 is connected in a retaining state by being formed larger than the outer diameter of the bottom surface, which is the outer surface of the bottom portion of the concave portion, and the peripheral edge 4a is fitted and locked into the concave portion of the corrugated sheath tube 63. It has become.

一方、管接続具１の管軸方向の他端部には、波付鞘管６３内及び管接続具１内を挿通する通水管６１が引き出される引出部５が設けられ、その引出部５は引出壁６に楕円形状の接続孔７が２個独立して並設されている。この接続孔７は大小の径の波付保護管６２を接続できるようになっている。具体的には、図２に示す楕円形状の接続孔７の短軸の長さＬ１は、円管状態における小径の波付保護管６２ａの凸部の外径より小さく、凹部の底面の外径より大きく形成されている。これにより、小径の波付保護管６２ａはその外面の凹部に接続孔７の周縁７ａが嵌入し係止してこの接続孔７に抜け止め状態で接続される。ここで、図２の管接続具１の２個の接続孔７における二点鎖線は、対比のため大小２個の波付保護管６２の接続孔７への係合状態を左右に並べて示しており、小径の波付保護管６２ａは右側の接続孔７の二点鎖線で示した係合状態となり、外側の二点鎖線は小径の波付保護管６２ａの凸部の外面を示し、内側の二点鎖線は小径の波付保護管６２ａの凹部の底面の外面を示す。なお、図２は対比のために、右側及び左側の一対の接続孔７，７にはそれぞれ二点鎖線で示すように大小径の異なる波付保護管６２を接続したものを示しているが、実際には、左右の接続孔７ともに小径の波付保護管６２ａを接続してもよいし、左右の接続孔７ともに大径の波付保護管６２ｂを接続してもよく、或いは前述のように大小径の異なる波付保護管６２を接続してもよいことは言うまでもない。 On the other hand, at the other end in the tube axis direction of the pipe connector 1, there is provided a lead-out portion 5 through which the water pipe 61 passing through the corrugated sheath pipe 63 and the pipe connector 1 is drawn. Two elliptical connection holes 7 are independently arranged in parallel on the drawer wall 6. The connection hole 7 can connect a corrugated protective tube 62 having a large and small diameter. Specifically, the short axis length L1 of the elliptical connection hole 7 shown in FIG. 2 is smaller than the outer diameter of the convex portion of the small diameter corrugated protective tube 62a in the circular tube state, and the outer diameter of the bottom surface of the concave portion. It is formed larger. As a result, the small diameter corrugated protective tube 62a is connected to the connection hole 7 in a state in which the peripheral edge 7a of the connection hole 7 is fitted and locked in the concave portion on the outer surface thereof. Here, the two-dot chain line in the two connection holes 7 of the pipe connector 1 in FIG. 2 shows the engagement state of the two large and small corrugated protection pipes 62 to the connection hole 7 side by side for comparison. The small-diameter wavy protective tube 62a is in the engaged state indicated by the two-dot chain line of the right connection hole 7, and the outer two-dot chain line indicates the outer surface of the convex portion of the small-diameter wavy protective tube 62a. The two-dot chain line indicates the outer surface of the bottom surface of the concave portion of the small diameter corrugated protective tube 62a. For comparison, FIG. 2 shows a pair of right and left connecting holes 7 and 7 connected with a corrugated protective tube 62 having different large and small diameters as shown by two-dot chain lines. Actually, the left and right connection holes 7 may be connected to a small diameter corrugated protection tube 62a, the left and right connection holes 7 may be connected to a large diameter corrugated protection tube 62b, or as described above. Needless to say, the corrugated protective tube 62 having a large and small diameter may be connected.

他方、大径の波付保護管６２ｂはその接続端部の外面を両側方から押圧し偏平に変形させて接続孔７に挿入した後、前記押圧を解除し接続孔７の内周に沿って弾性復帰させることにより接続される。この楕円形状の接続孔７の長軸の長さＬ２は、大径の波付保護管６２ｂが接続孔７に接続された状態において、大径の波付保護管６２ｂの長軸側における両端の凸部間の間隔より小さく、長軸側における両端の凹部の底面間の間隔より大きく形成されている。そして、接続孔７の全周の長さである周長は、大径の波付保護管６２ｂの凸部における周長より小さく、凹部の底面における周長より大きいものとなっている。これにより、大径の波付保護管６２ｂは全周に至ってその外面の凹部に接続孔７の周縁７ａが嵌入し係止してこの接続孔７に抜け止め状態で接続される。ここで、図２において、大径の波付保護管６２ｂは左側の接続孔７の二点鎖線で示した係合状態となる。 On the other hand, the corrugated protective tube 62b having a large diameter presses the outer surface of the connection end portion from both sides, deforms it into a flat shape and inserts it into the connection hole 7, and then releases the pressure along the inner periphery of the connection hole 7. It is connected by elastic return. The length L2 of the major axis of the elliptical connection hole 7 is such that the large-diameter wavy protective tube 62b is connected to the connection hole 7 at both ends on the long-axis side of the large-diameter wavy protective tube 62b. It is smaller than the interval between the convex portions and larger than the interval between the bottom surfaces of the concave portions at both ends on the long axis side. And the circumference which is the length of the perimeter of the connection hole 7 is smaller than the circumference in the convex part of the large diameter corrugated protective tube 62b, and larger than the circumference in the bottom face of the concave part. Thus, the large-diameter corrugated protective tube 62b reaches the entire circumference, and the peripheral edge 7a of the connection hole 7 is fitted and locked in the concave portion on the outer surface thereof, and is connected to the connection hole 7 in a retaining state. Here, in FIG. 2, the large-diameter wavy protective tube 62 b is in the engaged state indicated by the two-dot chain line of the left connection hole 7.

接続孔７は短軸の線上で上下２つに分割された一対の半割孔で形成されており、分割状態においては半楕円形状をなし、短軸と筒状体の割面１２とは同一直線上にある。接続孔７は、管接続具１を構成する後述の第１半割体２１と第２半割体３１とを閉じることにより楕円形状の孔に形成される。 The connection hole 7 is formed by a pair of half-split holes that are divided into two vertically on the short axis line. In the divided state, the connection hole 7 has a semi-elliptical shape, and the short axis and the split surface 12 of the cylindrical body are the same. It is on a straight line. The connection hole 7 is formed into an elliptical hole by closing a first half 21 and a second half 31 which will be described later constituting the pipe connector 1.

更に、管接続具１の内部であって前記鞘管取付部３と前記引出部５との間で引出部５寄りの位置には、通水管６１の外周全体に当接する当接部８が設けられている。この当接部８は、管軸と直交して設けられた一定厚さの楕円板状の隔壁９に、通水管６１が挿通される円形状の挿通孔１０が２個独立して形成されている。当接部８の挿通孔１０は、周縁１０ａが通水管６１の外面全体に当接する大きさに形成されている、つまり、その当接により通水管６１と挿通孔１０との隙間から水が浸入するのを防止する大きさに形成されている。当接部８の挿通孔１０は、管接続具１を構成する第１半割体２１と第２半割体３１とを閉じることによって円形状の孔に形成される。 Further, an abutting portion 8 that abuts the entire outer periphery of the water flow pipe 61 is provided in the pipe connector 1 at a position near the drawer portion 5 between the sheath tube attachment portion 3 and the drawer portion 5. It has been. The abutting portion 8 is formed by independently forming two circular insertion holes 10 through which the water pipe 61 is inserted into an elliptical plate-like partition wall 9 having a constant thickness provided perpendicular to the tube axis. Yes. The insertion hole 10 of the contact portion 8 is formed in such a size that the peripheral edge 10a is in contact with the entire outer surface of the water pipe 61, that is, water enters through the gap between the water pipe 61 and the insertion hole 10 due to the contact. It is formed in a size that prevents this. The insertion hole 10 of the contact portion 8 is formed into a circular hole by closing the first half 21 and the second half 31 constituting the pipe connector 1.

引出部５と当接部８との間において該当接部８に隣接する位置には、管接続具１の内外に貫通する水抜孔１１が計４個設けられている。水抜孔１１は小さい角孔で形成されており、引出部５と当接部８との間に管継手６５からの漏水が溜まったときに、それを外部に排出できる大きさに形成され、かつ排出し易い位置に形成されている。 A total of four drain holes 11 penetrating into and out of the pipe connector 1 are provided at positions adjacent to the corresponding contact portion 8 between the drawing portion 5 and the contact portion 8. The drain hole 11 is formed as a small square hole, and is formed in a size that allows water to be discharged to the outside when water leaks from the pipe joint 65 between the drawing portion 5 and the contact portion 8. It is formed at a position where it can be easily discharged.

本実施形態における管接続具１は、割面１２において分割された左右略対象の第１半割体２１と第２半割体３１との２つの半割体で構成され、この第１半割体２１と第２半割体３１との間に管軸方向に薄肉形成してなる第１ヒンジ１３が設けられ、この第１ヒンジ１３を軸に第１半割体２１と第２半割体３１とを相対的に回動して閉じることにより、筒状体に形成されるものとなっている。この管接続具１はポリプロピレン等の硬質樹脂で形成され、第１半割体２１及び第２半割体３１が展開された形態で樹脂の一体成形により形成することができる。したがって、安価に製造することができる。 The pipe connector 1 according to the present embodiment includes two halves, a first half 21 and a second half 31, which are substantially right and left divided at the split surface 12, and this first half. A first hinge 13 is formed between the body 21 and the second half 31 so as to be thin in the tube axis direction, and the first half 21 and the second half are centered on the first hinge 13. By rotating and closing 31 relatively, it is formed in a cylindrical body. The pipe connector 1 is formed of a hard resin such as polypropylene, and can be formed by integral molding of the resin in a form in which the first half 21 and the second half 31 are developed. Therefore, it can be manufactured at low cost.

前記管接続具１の第１半割体２１において、当接部８には通水管６１の外面に沿って当接する小突条からなるリブ８ａが一体に突設されている。このリブ８ａは後述の第２半割体３１のリブ８ｂとともに、通水管６１の外面との密接性を高め、通水管６１の外面との当接による当接部８の止水性を高めるために設けられたものである。但し、これらのリブは必ずしも設置を要するものではない。 In the first half 21 of the pipe connector 1, the abutment portion 8 is integrally provided with a rib 8 a formed of a small protrusion that abuts along the outer surface of the water passage 61. The rib 8a, together with the rib 8b of the second half 31 described later, enhances the close contact with the outer surface of the water conduit 61, and increases the water stoppage of the abutting portion 8 due to contact with the outer surface of the water conduit 61. It is provided. However, these ribs are not necessarily required to be installed.

更に、この第１半割体２１は、第１ヒンジ１３を軸に閉じて筒状体を形成すべく、一側の側壁部２２における管軸方向の両側に、左右一対の被係止突起２４，２４が一体に設けられている。被係止突起２４は断面がＬ字板状に形成され、屈曲先端部は後述する第２半割体３１の係止孔３６と係止するようになっている。被係止突起２４の管軸方向の中央寄り２箇所には、コ字状に切欠され、１辺側が割面１２である側端面２３側に開口する第１切欠孔２５が形成されており、更にこの第１切欠孔２５の周縁２辺には外壁２の表面から僅かに突出する窓枠２６が一体に形成されている。更に、左右一対の窓枠２６間の空間は被嵌合部２７を形成している。 Further, the first half 21 has a pair of left and right locking projections 24 on both sides in the tube axis direction of the side wall 22 on one side so as to form a cylindrical body by closing the first hinge 13 as an axis. , 24 are integrally provided. The to-be-latched projection 24 has an L-shaped cross section, and the bent tip portion is to be latched with a locking hole 36 of a second half-divided body 31 described later. At the two positions near the center of the locked projection 24 in the tube axis direction, there are formed first notch holes 25 that are notched in a U shape and open on the side end face 23 side that is the split surface 12 on one side. Further, a window frame 26 slightly projecting from the surface of the outer wall 2 is integrally formed on the two peripheral edges of the first cutout hole 25. Furthermore, a space between the pair of left and right window frames 26 forms a fitted portion 27.

一方、前記管接続具１の第２半割体３１において、当接部８の当接面上には、第１半割体２１のリブ８ａと同様に、通水管６１の外面に沿って当接する小突条からなるリブ８ｂが一体に突設されている。なお、リブ８ａ及び８ｂの先端当接部分は平坦面や湾曲面などに形成することができる。 On the other hand, in the second half 31 of the pipe connector 1, the abutment surface of the abutment 8 is contacted along the outer surface of the water pipe 61 like the rib 8 a of the first half 21. A rib 8b made of a small ridge that comes into contact with the ridge protrudes integrally. The tip contact portions of the ribs 8a and 8b can be formed on a flat surface or a curved surface.

更に、この管接続具１の第２半割体３１は、一側の側壁部３２の管軸方向の両側において、第１半割体２１の被係止突起２４に対応する位置に、矩形板状の左右一対の係止片３４，３４が外壁２との接合部を基端として水平方向に一体に突設されている。この係止片３４はその基端に薄肉形成により設けられた第２ヒンジ３５を軸に回動できるようになっている。各係止片３４には角孔からなる係止孔３６が設けられ、更に、この係止孔３６より先端側は傾斜面となっていて、この傾斜面は指で摘んで係止片３４を回動操作するための摘み部３７を形成している。また、各係止片３４の側部には矩形板材からなり、後述する信号線引出孔１４を閉塞する閉塞蓋３８が管軸方向の中央側に向けて一体に延設されている。したがって、第２ヒンジ３５を軸に係止片３４を回動して係止孔３６を第１半割体２１の被係止突起２４に係止すれば、その回動に連動して閉塞蓋３８は信号線引出孔１４を個別に閉塞するようになっている。更に、閉塞蓋３８は、係止片３４との間に薄肉形成により設けられた折取溝３９に沿って折り取ることが可能となっており、閉塞蓋３８を折り取ることによって信号線引出孔１４を開口させることができるようになっている。 Further, the second half 31 of the pipe connector 1 is a rectangular plate at a position corresponding to the locked protrusion 24 of the first half 21 on both sides in the tube axis direction of the side wall 32 on one side. A pair of left and right engaging pieces 34, 34 are integrally projected in the horizontal direction with the joint portion with the outer wall 2 as a base end. The locking piece 34 can be rotated about a second hinge 35 provided at its base end by forming a thin wall. Each locking piece 34 is provided with a locking hole 36 formed of a square hole, and further, the tip side of the locking hole 36 is an inclined surface. A knob portion 37 for rotating is formed. Further, the side of each locking piece 34 is made of a rectangular plate material, and a closing lid 38 that closes a signal line lead-out hole 14 to be described later is integrally extended toward the center side in the tube axis direction. Therefore, if the locking piece 34 is rotated about the second hinge 35 and the locking hole 36 is locked to the locked projection 24 of the first half 21, the closing lid is interlocked with the rotation. 38 is configured to individually block the signal line lead-out hole 14. Further, the closing lid 38 can be folded along a breakage groove 39 provided between the locking piece 34 and a thin wall. By breaking the closing lid 38, the signal line lead hole is formed. 14 can be opened.

また、第２半割体３１の割面１２周辺の外壁２には、第１半割体２１の２個の第１切欠孔２５と対向する位置にそれぞれ、コ字状に切欠され、１辺側が割面１２である側端面３３に開口する第２切欠孔４０が形成されており、更にこの第２切欠孔４０の周縁２辺には第２半割体３１の外壁２の表面から僅かに突出する窓枠４１が周縁に沿って一体に形成されている。第２半割体３１の２個の第２切欠孔４０は、第１半割体２１と第２半割体３１とを相対的に回動して閉じることによって筒状体に形成したときに、対向する第１半割体２１の２個の第１切欠孔２５と連通し、この第１切欠孔２５と一体となって、管接続具１の割面１２に、矩形状の信号線引出孔１４を形成する。この信号線引出孔１４は、通水管６１と並行して波付鞘管６３内に挿通されて給湯器６４等に電気信号を送る図示しない信号線を外部に引き出すための孔である。信号線引出孔１４は、信号線を引き出さないときは、常時、閉塞蓋３８によって閉塞されるから、ここから管接続具１の内部に異物が混入するのが防止される。更に、側端面３３の管軸方向の中央部には板状の嵌合突起４２が突設されており、この嵌合突起４２は、第１半割体２１と第２半割体３１とを相対的に回動して閉じる際に、第１半割体２１の被嵌合部２７に嵌入し、第１半割体２１の側端面２３と第２半割体３１の側端面３３とが合致して当接するよう位置決めする。 Also, the outer wall 2 around the split surface 12 of the second half 31 is cut out in a U-shape at positions facing the two first notches 25 of the first half 21, respectively. A second cutout hole 40 is formed in the side end face 33, which is the split face 12 on the side. Further, the second cutout hole 40 has a slightly peripheral edge from the surface of the outer wall 2 of the second half split body 31. A protruding window frame 41 is integrally formed along the periphery. When the two second cutout holes 40 of the second half 31 are formed into a cylindrical body by relatively rotating and closing the first half 21 and the second half 31. , Communicating with the two first cutout holes 25 of the opposed first half body 21, and being integrated with the first cutout hole 25, a rectangular signal line lead is formed on the split face 12 of the pipe connector 1. Hole 14 is formed. The signal line lead-out hole 14 is a hole for drawing out a signal line (not shown) that is inserted into the corrugated sheath pipe 63 in parallel with the water pipe 61 and sends an electric signal to the water heater 64 and the like. When the signal line is not drawn, the signal line drawing hole 14 is always closed by the closing lid 38, so that foreign matter is prevented from entering the tube connector 1 from here. Further, a plate-like fitting protrusion 42 is provided at the center of the side end surface 33 in the tube axis direction, and the fitting protrusion 42 connects the first half 21 and the second half 31. When relatively rotating and closing, it is fitted into the fitted portion 27 of the first half 21 and the side end face 23 of the first half 21 and the side end face 33 of the second half 31 are Position to match and abut.

次に、上記のように構成された管接続具１を波付鞘管６３の端部とそこから引き出された通水管６１とに跨って取付け、この管接続具１に波付管としての波付保護管６２を接続する方法を説明する。
管接続具１の取付け及び波付保護管６２の接続においては、これに先立ち、波付鞘管６３の端部から通水管６１の端部を引き出し、管継手６５に接続する。それには、波付鞘管６３内に並列に挿通されている行きと戻りの２本の通水管６１を該波付鞘管６３の端部から所定長引き出した後、この露出部分に波付保護管６２を外嵌する。次いで、波付保護管６２を管軸方向に圧縮して通水管６１の端部を接続代分だけ露出させ、或いは通水管６１の引出長さより短い波付保護管６２を使用することによって通水管６１を接続代分だけ露出させ、管継手６５の締付リング６６をこの通水管６１に外嵌した後、工具を使用して通水管６１を管継手６５の図示しない接続筒部に外嵌し圧入する。次に、図示しないが、スライダ等の挟み工具を使用して、管継手６５の締付リング６６を押上げて通水管６１の端部を前記接続筒部とで強く挟み込む。その後、波付保護管６２の端部を管継手６５側に押し戻す。 Next, the pipe connector 1 configured as described above is attached across the end portion of the corrugated sheath pipe 63 and the water pipe 61 drawn therefrom, and the wave as a corrugated pipe is attached to the pipe connector 1. A method of connecting the attached protective tube 62 will be described.
Prior to the attachment of the pipe connector 1 and the connection of the corrugated protective pipe 62, the end of the water flow pipe 61 is drawn from the end of the corrugated sheath pipe 63 and connected to the pipe joint 65. For this purpose, two outgoing and return water pipes 61 inserted in parallel in the corrugated sheath pipe 63 are pulled out from the end of the corrugated sheath pipe 63 for a predetermined length, and then the exposed portion is corrugated protected. The tube 62 is externally fitted. Then, the corrugated protective pipe 62 is compressed in the direction of the pipe axis so that the end of the water conduit 61 is exposed by the connection allowance, or by using the corrugated protective pipe 62 shorter than the drawing length of the water conduit 61. 61 is exposed as much as the connection allowance, and the fastening ring 66 of the pipe joint 65 is externally fitted to the water pipe 61, and then the water pipe 61 is externally fitted to a connection cylinder (not shown) of the pipe joint 65 using a tool. Press fit. Next, although not shown, a clamping tool such as a slider is used to push up the tightening ring 66 of the pipe joint 65 so that the end portion of the water pipe 61 is strongly clamped between the connection tube portion. Thereafter, the end of the corrugated protective pipe 62 is pushed back to the pipe joint 65 side.

そこで、このようにして、管継手６５に通水管６１の端部を接続したら、管接続具１を波付鞘管６３の端部と通水管６１とに跨って取付ける。それには、管接続具１を図３及び図４に示す展開状態とし、最初に、図４(b)の二点鎖線で示すように、波付鞘管６３の端部を第２半割体３１の鞘管取付孔４の周縁４ａ上に載置するとともに、波付鞘管６３の端部から引き出されている２本の通水管６１を第２半割体３１の当接部８の挿通孔１０の周縁１０ａ及び引出部５の接続孔７の周縁７ａ上に載置する。次いで、第１ヒンジ１３を軸に第１半割体２１を回動して、中央部の被嵌合部２７に第２半割体３１の中央部の嵌合突起４２を嵌合させて位置決めしつつ、割面１２である第１半割体２１の側端面２３と第２半割体３１の側端面３３とを相互に当接させて閉じる。両半割体を閉じたら、第２半割体３１の左右一対の係止片３４，３４をそれぞれ第２ヒンジ３５を軸に回動し、一対の係止孔３６，３６をそれぞれ第１半割体２１の一対の被係止突起２４，２４に係止させる。 Thus, when the end of the water pipe 61 is connected to the pipe joint 65 in this way, the pipe connector 1 is attached across the end of the corrugated sheath pipe 63 and the water pipe 61. For this purpose, the tube connector 1 is set in the unfolded state shown in FIGS. 3 and 4, and first, as shown by a two-dot chain line in FIG. The two water pipes 61 that are placed on the peripheral edge 4 a of the sheath pipe mounting hole 4 of 31 and drawn out from the end of the corrugated sheath pipe 63 are inserted into the contact part 8 of the second half 31. It is placed on the peripheral edge 10 a of the hole 10 and the peripheral edge 7 a of the connection hole 7 of the drawer portion 5. Next, the first half 21 is rotated about the first hinge 13, and the fitting projection 42 at the center of the second half 31 is fitted to the fitted portion 27 at the center so as to be positioned. However, the side end face 23 of the first half 21 that is the split surface 12 and the side end face 33 of the second half 31 are brought into contact with each other and closed. When both halves are closed, the pair of left and right engaging pieces 34, 34 of the second half 31 is rotated about the second hinge 35, and the pair of engaging holes 36, 36 are respectively connected to the first half. The pair of locked protrusions 24 and 24 of the split body 21 are locked.

これにより、管接続具１の鞘管取付孔４の周縁４ａが波付鞘管６３の外面の凹部に係止し、波付鞘管６３は鞘管取付部３に抜け止め状態に連結される。また、管接続具１の接続孔７の周縁７ａが波付保護管６２の外面の凹部に係止し、波付保護管６２は接続孔７に抜け止め状態に連結される。そして、管接続具１の当接部８の挿通孔１０の周縁１０ａは通水管６１の外面に当接する。以上により、図５に示すように、管接続具１の取付け及びこの管接続具１への波付保護管６２の接続が完了する。 Thereby, the peripheral edge 4a of the sheath tube mounting hole 4 of the tube connector 1 is locked to the recess on the outer surface of the corrugated sheath tube 63, and the corrugated sheath tube 63 is connected to the sheath tube mounting portion 3 in a retaining state. . Further, the peripheral edge 7 a of the connection hole 7 of the pipe connector 1 is engaged with the concave portion on the outer surface of the wave protection tube 62, and the wave protection tube 62 is coupled to the connection hole 7 in a retaining state. The peripheral edge 10 a of the insertion hole 10 of the contact portion 8 of the pipe connector 1 is in contact with the outer surface of the water pipe 61. Thus, as shown in FIG. 5, the attachment of the pipe connector 1 and the connection of the corrugated protective pipe 62 to the pipe connector 1 are completed.

次に、上記管接続具１への大小の径を有する波付保護管６２の接続状態について図２に基づいて説明する。
まず、小径の波付保護管６２ａは、外面の凸部における外径は接続孔７の短軸の長さＬ１より大きく、凹部の底面における外径は前記短軸の長さＬ１より小さく形成されており、一対の第１半割体２１及び第２半割体３１を閉じることにより接続孔７には円管形状またはそれに近い管形状で接続される。 Next, the connection state of the corrugated protective tube 62 having a large and small diameter to the tube connector 1 will be described with reference to FIG.
First, the small diameter corrugated protective tube 62a is formed such that the outer diameter at the convex portion on the outer surface is larger than the length L1 of the short axis of the connection hole 7, and the outer diameter at the bottom surface of the concave portion is smaller than the length L1 of the short axis. By closing the pair of the first half 21 and the second half 31, the connection hole 7 is connected in a circular tube shape or a tube shape close thereto.

他方、大径の波付保護管６２ｂは、外面の凸部における外径のみでなく凹部の底面における外径も接続孔７の短軸の長さＬ１より大きいため、円管そのものの形状では接続孔７に収まりきらず接続することはできない。しかし、接続孔７は周長が大径の波付保護管６２ｂの凹部の周長より大きく形成されているので、波付保護管６２ｂは外面を両側方から押圧して図２の上下方向に長く偏平した形状に変形させた状態で接続孔７内に収めることができる。したがって、波付保護管６２ｂの接続端部は、一対の第１半割体２１及び第２半割体３１を閉じることにより接続孔７に接続することができる。なお、当然であるが、波付保護管６２が楕円形状であるのは接続端部のみであり、それを除くほぼ全長は円管形状に維持される。なお、前記小径の波付保護管６２ａについても、径の大きさによっては、扁平に変形させた状態で接続孔７に接続されることがある。 On the other hand, the large diameter corrugated protective tube 62b is connected not only in the outer diameter of the convex portion on the outer surface but also in the bottom surface of the concave portion in the shape of the circular tube itself because the outer diameter at the bottom surface of the concave portion is larger than the short axis length L1. It cannot fit in the hole 7 and cannot be connected. However, since the connection hole 7 is formed larger in circumference than the recess of the corrugated protective tube 62b having a large diameter, the corrugated protective tube 62b presses the outer surface from both sides in the vertical direction of FIG. It can be accommodated in the connection hole 7 in a state of being deformed into a long and flat shape. Therefore, the connection end portion of the corrugated protective tube 62 b can be connected to the connection hole 7 by closing the pair of the first half 21 and the second half 31. As a matter of course, the corrugated protective tube 62 has an elliptical shape only at the connection end portion, and substantially the entire length except for that is maintained in a circular tube shape. The small diameter corrugated protective tube 62a may also be connected to the connection hole 7 in a deformed state depending on the size of the diameter.

次に、波付保護管６２が接続具１の接続孔７に接続された後の状態について図２、図６及び図７に基づいて説明する。
波付保護管６２は合成樹脂により円管形状に形成されているので、外面を両側方から押圧して偏平に変形させて接続孔７に挿入してもその押圧を解除すれば、弾性力により元の円管形状に復帰しようとする。今、楕円形状の接続孔７に小径の波付保護管６２ａが接続されたときには、図２の右側の接続孔７に示すように、波付保護管６２はほとんど変形せず、円管形状またはそれに近い管形状で接続される。したがって、小径の波付保護管６２ａには弾性復帰力はほとんど発生しないから、接続孔７の周辺における割面１２に何らかの力が作用することはない。 Next, the state after the corrugated protective tube 62 is connected to the connection hole 7 of the connector 1 will be described with reference to FIGS. 2, 6, and 7.
Since the corrugated protective tube 62 is formed in a circular tube shape with a synthetic resin, even if the outer surface is pressed from both sides to be deformed into a flat shape and inserted into the connection hole 7, if the pressure is released, the elastic force Trying to return to the original tube shape. Now, when the small diameter corrugated protective tube 62a is connected to the elliptical connection hole 7, the corrugated protective tube 62 hardly deforms as shown in the right connection hole 7 in FIG. It is connected in a tube shape close to it. Therefore, almost no elastic restoring force is generated in the small diameter corrugated protective tube 62a, so that no force acts on the split surface 12 around the connection hole 7.

他方、楕円形状の接続孔７に大径の波付保護管６２ｂが接続されたときには、図６(a)に示すように、波付保護管６２は接続孔７に沿った扁平状態に変形しているので、二点鎖線で示す元の円管形状に弾性復帰しようとする力が発生する。この弾性復帰力は、元の円管形状に戻ろうとするのであるから、接続孔７の短軸に沿う方向に発生する。 On the other hand, when the large-diameter wave protection tube 62b is connected to the elliptical connection hole 7, the wave protection tube 62 is deformed into a flat state along the connection hole 7, as shown in FIG. Therefore, a force is generated to elastically return to the original circular tube shape indicated by a two-dot chain line. This elastic restoring force is generated in the direction along the short axis of the connection hole 7 because it tries to return to the original circular tube shape.

そこで、仮に、図６(b)のように、接続孔７の長軸が管接続具１の割面１２と同方向に形成されているとすると、大径の波付保護管６２ｂに発生した弾性復帰力は接続孔７の短軸側に発生するので、大径の波付保護管６２ｂの弾性復帰力の大きさによっては、接続具１は割面１２を境に第１半割体２１と第２半割体３１とが互いに反対側に押し広げられ、割面１２に隙間Ｓが発生することがある。この隙間Ｓは、割面１２の左右両端にヒンジや係合手段が設けられていたり、ボルト締め等によって固定されていたとしても、割面１２の長さ方向の中間部分にはその拡開を阻止するものは何ら存在しないので、図７に示すように、特に割面１２の長さ方向の中間部分において最も大きく発生する。このため、隙間Ｓから異物が侵入することがあり、また、外観的にも見苦しいものとなる。 Therefore, assuming that the long axis of the connection hole 7 is formed in the same direction as the split surface 12 of the pipe connector 1 as shown in FIG. 6B, it occurs in the large diameter corrugated protective pipe 62b. Since the elastic restoring force is generated on the short axis side of the connection hole 7, depending on the magnitude of the elastic restoring force of the large-diameter wavy protective tube 62 b, the connector 1 is divided into the first half 21 by the split surface 12. And the second halved body 31 may be spread on opposite sides, and a gap S may be generated on the split surface 12. Even if the gap S is provided with hinges or engaging means at the left and right ends of the split surface 12 or is fixed by bolting or the like, the gap S is expanded at the intermediate portion in the length direction of the split surface 12. Since there is nothing to prevent, it occurs most particularly in the middle portion of the split surface 12 in the length direction, as shown in FIG. For this reason, a foreign substance may enter from the gap S, and the appearance is unsightly.

しかし、本実施形態の接続具１は、図６(a)に示すように、接続孔７の長軸は管接続具１の割面１２と直交する方向に形成されている。したがって、前述のように、波付保護管６２ｂの弾性復帰力は矢印で示すように接続孔７の短軸方向に作用する。ところが、接続孔７の短軸は割面１２と同一線上にあるため、割面１２にはこれを拡開させようとする力は発生しない。このため、割面１２には隙間は発生しない。 However, as shown in FIG. 6A, the connecting tool 1 of the present embodiment is formed such that the long axis of the connecting hole 7 is perpendicular to the split surface 12 of the pipe connecting tool 1. Therefore, as described above, the elastic restoring force of the corrugated protective tube 62b acts in the short axis direction of the connection hole 7 as indicated by the arrow. However, since the short axis of the connection hole 7 is on the same line as the split surface 12, no force is generated on the split surface 12 to expand it. For this reason, a gap does not occur in the split surface 12.

次に、管接続具１の作用を説明する。
管接続具１は、接続孔７が、楕円形状に形成されているから、１種類で、大小の径の波付保護管６２に対応してこれを接続することができる。
そして、特に、楕円形状の接続孔７の長軸は、接続孔７に半割の開口を形成する筒状体の割面１２に対して直交する方向に形成されている。ここで、波付保護管６２の接続端部を偏平に変形させて接続孔７に接続したとき、前述のように、波付保護管６２に元の円管形状への弾性復帰力が発生し、接続孔７の短軸側で互いに反対方向に押し広げようとする拡開力が発生する。しかし、弾性復帰力の作用する方向と割面１２を拡開させようとする方向とは位相が９０度相違するため、割面１２に隙間が発生するのが回避される。その結果、割面１２に発生した隙間から異物が侵入したり、外観が低下するのが防止される。 Next, the operation of the pipe connector 1 will be described.
Since the connection hole 7 is formed in an elliptical shape, the tube connector 1 can be connected to the corrugated protective tube 62 having a large and small diameter by one kind.
In particular, the major axis of the elliptical connection hole 7 is formed in a direction perpendicular to the split surface 12 of the cylindrical body that forms a half opening in the connection hole 7. Here, when the connecting end portion of the corrugated protective tube 62 is deformed flat and connected to the connection hole 7, an elastic return force to the original circular tube shape is generated in the corrugated protective tube 62 as described above. Then, an expanding force is generated to push the connecting holes 7 in the opposite directions on the short axis side. However, since the phase in which the elastic restoring force acts and the direction in which the split surface 12 is to be expanded are different by 90 degrees, the occurrence of a gap in the split surface 12 is avoided. As a result, foreign matter can be prevented from entering through the gap generated on the split surface 12 and the appearance can be prevented from deteriorating.

また、管接続具１は、鞘管取付部３と引出部５との間に当接部８が設けられ、この当接部８の挿通孔１０の周縁１０ａは通水管６１の外周全体に当接するから、管継手６５に漏水が発生し、その水が通水管６１の外面を伝って波付保護管６２との隙間内を通過し、接続孔７から管接続具１の内部に浸入しても、当接部８によって止水され、それ以上に波付鞘管６３内にまで浸入するのが防止される。
ここで、前述のように、接続孔７の長軸が割面１２と直交する方向に形成されているため、大径の波付保護管６２ｂが接続されたときでも筒状体の割面１２に隙間Ｓが発生するのが防止されるから、この当接部８においても、大径の波付保護管６２ｂが接続されることにより接続具１内の当接部８の半割孔からなる挿通孔１０が割面１２において拡開して通水管６１の外面との間の密接性が失われ止水性が低下してしまうのが防止される。
また、当接部８に、通水管６１の外面に沿って圧接するリブが形成されているので、当接部８の挿通孔１０と通水管６１との間の密接性が増し、止水効果が更に高まる。 Further, the pipe connector 1 is provided with an abutting portion 8 between the sheath tube attaching portion 3 and the lead-out portion 5, and the peripheral edge 10 a of the insertion hole 10 of the abutting portion 8 contacts the entire outer periphery of the water conduit 61. Therefore, water leakage occurs in the pipe joint 65, and the water passes through the outer surface of the water flow pipe 61 and passes through the gap with the corrugated protective pipe 62 and enters the inside of the pipe connector 1 from the connection hole 7. In addition, the water is stopped by the abutting portion 8 and further intrusion into the corrugated sheath 63 is prevented.
Here, as described above, since the major axis of the connection hole 7 is formed in a direction orthogonal to the split surface 12, the split surface 12 of the cylindrical body is formed even when the large-diameter corrugated protective tube 62b is connected. Since the gap S is prevented from being generated in the contact portion 8, the contact portion 8 is also composed of a half hole of the contact portion 8 in the connection tool 1 by connecting the large diameter corrugated protective tube 62 b. It is prevented that the insertion hole 10 expands at the split surface 12 and the closeness between the insertion hole 10 and the outer surface of the water pipe 61 is lost and the water stoppage is lowered.
Moreover, since the rib which press-contacts along the outer surface of the water flow pipe 61 is formed in the contact part 8, the close_contact | adherence between the insertion hole 10 of the contact part 8 and the water flow pipe 61 increases, and a water stop effect Is further increased.

ところで、上記実施形態の管接続具１は、内部に、隔壁９に通水管６１の挿通孔１０を形成してなる当接部８を設けているが、止水効果を特に求めない場合は、当接部８は特に設けなくてもよい。
なお、上記実施形態において、管接続具１と波付保護管６２とは管接続装置を構成しており、このうちの管接続具１の引出部５の部分は請求項の接続部に相当するものでもある。 By the way, the pipe connector 1 of the above embodiment is provided with the abutting portion 8 formed by forming the insertion hole 10 of the water pipe 61 in the partition wall 9 inside. The abutting portion 8 may not be provided.
In addition, in the said embodiment, the pipe connector 1 and the corrugated protection pipe | tube 62 comprise the pipe connection apparatus, The part of the drawer | drawing-out part 5 of the pipe connector 1 of these corresponds to the connection part of a claim. It is also a thing.

〈第二実施形態〉
次に、本発明の第二実施形態の管接続具を図８に基づいて説明する。この管接続具は、管接続具１の一部が半割構造となっているものである。
図８において、管接続具５１は、筒状体に形成され、外壁２の管軸と直交する横断面の形状は略小判形状に形成されている。管接続具５１は、管軸方向の一端部に、波付鞘管６３の端部が連結される鞘管取付部３が設けられ、この鞘管取付部３の鞘管取付孔４内に波付鞘管６３の端部が挿通され、その外面の凹部が鞘管取付孔４の周縁４ａに係止して波付鞘管６３が抜け止め状態に接続されるようになっている。ここで、この鞘管取付部３を含めた管接続具５１の大半を構成する接続具本体５２は半割構造ではなく、割面１２を有しない筒状体となっている。 <Second embodiment>
Next, the pipe connector of the second embodiment of the present invention will be described with reference to FIG. In this pipe connector, a part of the pipe connector 1 has a half structure.
In FIG. 8, the pipe connector 51 is formed in a cylindrical body, and the shape of the cross section orthogonal to the pipe axis of the outer wall 2 is formed in a substantially oval shape. The tube connector 51 is provided with a sheath tube attachment portion 3 to which an end portion of the corrugated sheath tube 63 is connected at one end portion in the tube axis direction, and the wave is inserted into the sheath tube attachment hole 4 of the sheath tube attachment portion 3. The end portion of the sheathed tube 63 is inserted, and the concave portion on the outer surface is locked to the peripheral edge 4a of the sheath tube mounting hole 4 so that the corrugated sheath tube 63 is connected in a retaining state. Here, the connector main body 52 that constitutes most of the pipe connector 51 including the sheath tube attachment portion 3 is not a halved structure, but is a cylindrical body having no split surface 12.

一方、管接続具５１の他端部及び内部における他端部寄りには、それぞれ上記実施形態の管接続具１と同様の半割構造の引出部５及び当接部８が一体に設けられている。これら引出部５及び当接部８を有する部分は上部半割部５４と下部半割部５５とからなる接続部５３を構成している。接続部５３は左側端部の第１ヒンジ１３を介して開閉する。また、接続部５３の右側端部は被係止突起２４と係止片３４とが係止して閉じた状態が維持される。なお、下部半割部５５は接続具本体５２と一体に連結されている。 On the other hand, a drawer portion 5 and a contact portion 8 having a halved structure similar to those of the pipe connector 1 of the above-described embodiment are integrally provided near the other end portion of the pipe connector 51 and the other end portion inside. Yes. The portion having the drawing portion 5 and the abutting portion 8 constitutes a connecting portion 53 including an upper half portion 54 and a lower half portion 55. The connecting portion 53 opens and closes via the first hinge 13 at the left end. In addition, the right end portion of the connection portion 53 is maintained in a state where the locked protrusion 24 and the locking piece 34 are locked and closed. The lower half portion 55 is integrally connected to the connector main body 52.

即ち、管接続具５１は、半割構造でない鞘管取付部３側の接続具本体５２と、半割構造の引出部５及び当接部８側の接続部５３とで構成されている。そして、管接続具５１は上記以外の構成については、前述の管接続具１と同様の構成となっている。なお、図８における引出部５及び当接部８における上下に分割された上部半割部５４及び下部半割部５５は、請求項の一対の半割部に相当する。 That is, the pipe connector 51 includes a connector main body 52 on the side of the sheath tube attachment portion 3 that is not a half structure, and a connection portion 53 on the side of the drawer part 5 and the contact part 8 that has a half structure. And the pipe connector 51 is the same structure as the above-mentioned pipe connector 1 about structures other than the above. In addition, the upper half part 54 and the lower half part 55 that are divided vertically in the drawing part 5 and the contact part 8 in FIG. 8 correspond to a pair of half parts in the claims.

この管接続具５１は、基本的には、第一実施形態の管接続具１と同様に作用し、接続孔７が楕円形状に形成されているから、１種類で、大小の径の波付保護管６２を接続することができる。また、楕円形状の接続孔７の長軸は割面１２と直交する方向に形成されているから、波付保護管６２の端部を偏平に変形させて接続孔に接続したとき、元の円管形状への弾性復帰力が起因して割面１２に隙間が発生するのを回避できる。 The pipe connector 51 basically operates in the same manner as the pipe connector 1 of the first embodiment, and the connection hole 7 is formed in an elliptical shape. A protective tube 62 can be connected. Further, since the major axis of the elliptical connection hole 7 is formed in a direction perpendicular to the split surface 12, when the end of the corrugated protective tube 62 is deformed flat and connected to the connection hole, the original circle It is possible to avoid the generation of a gap in the split surface 12 due to the elastic return force to the tube shape.

なお、図８において、管接続具５１は、引出部５及び当接部８の部分である接続部５３を半割構造としているが、引出部５の部分のみを半割構造とすることもできる。 In FIG. 8, the pipe connector 51 has a halved structure of the connection portion 53 that is a portion of the drawer portion 5 and the contact portion 8, but only the portion of the drawer portion 5 can also be a halved structure. .

〈その他〉
ところで、上記各実施形態の接続孔７は、楕円形状に形成されているが、両側の半円を２本の平行線で連結したトラック形状や小判形状などの、楕円に類似した略楕円形状のものに形成してもよい。更には、接続孔７は基本的には周長が大径の波付保護管６２ｂにおける凹部の底面の周長より長ければよいから、４隅に円弧面を有する略横長四角形状に形成したり、左右或いは上下が非対称の孔に形成することも可能である。 <Others>
By the way, although the connection hole 7 of each said embodiment is formed in elliptical shape, it is substantially elliptical shape similar to an ellipse, such as a track shape and an oval shape which connected the semicircle of both sides with two parallel lines. It may be formed into a thing. Further, since the connection hole 7 basically needs to be longer than the circumference of the bottom surface of the recess in the corrugated protective tube 62b having a large diameter, the connection hole 7 may be formed in a substantially horizontally long rectangular shape having arcuate surfaces at four corners. It is also possible to form holes that are asymmetrical on the left and right or top and bottom.

また、接続孔７は、引出壁６に２個独立して形成されているが、その数は問わず、１個或いは３個以上形成してもよい。加えて、複数個の接続孔のうちの一部のみを楕円形状等に形成し、他の接続孔は通常の円形状に形成してもよい。 Moreover, although the two connection holes 7 are independently formed in the drawer | drawing-out wall 6, you may form one piece or three or more regardless of the number. In addition, only a part of the plurality of connection holes may be formed in an elliptical shape and the other connection holes may be formed in a normal circular shape.

更に、上記各実施形態においては、大小の径の波付管を接続可能な接続孔７は、引出部５の波付保護管６２を接続する接続孔７のみに設けているが、波付鞘管６３が取着される鞘管取付部３の鞘管取付孔４についても割面１２と直交する方向に長軸が形成された半割構造の楕円孔または略楕円孔を形成し、この楕円孔に断面真円の管形状に形成された大小の径の波付鞘管６３を接続できるようにしてもよい。或いは、管接続具において鞘管取付部３の鞘管取付孔４のみを前記半割構造の楕円形状または略楕円形状の接続孔に形成してもよい。 Furthermore, in each said embodiment, although the connection hole 7 which can connect a corrugated pipe | tube of large and small diameter is provided only in the connection hole 7 which connects the corrugated protection pipe | tube 62 of the drawer part 5, it is a corrugated sheath. As for the sheath tube mounting hole 4 of the sheath tube mounting portion 3 to which the tube 63 is attached, an elliptical hole or a substantially elliptical hole having a half-axis structure in which a long axis is formed in a direction orthogonal to the split surface 12 is formed. You may enable it to connect the corrugated sheath pipe | tube 63 of a large and small diameter formed in the pipe | tube shape of a cross-sectional circle at the hole. Alternatively, in the tube connector, only the sheath tube mounting hole 4 of the sheath tube mounting portion 3 may be formed in the half-structured elliptical or substantially elliptical connection hole.

なお、上記各実施形態において楕円形状等の接続孔７に接続される波付管は、接続孔７に円管形状の波付保護管６２を偏平させることなくまたは偏平させて接続されるものを示しているが、波付管が楕円形状または略楕円形状の接続孔７に合致した楕円形状または略楕円形状の断面を有したものである場合は、特に偏平に変形させることなくそのまま接続孔７に接続させることもできることは言うまでもない。 In each of the above embodiments, the corrugated tube connected to the connection hole 7 having an elliptical shape or the like is connected to the connection hole 7 without or flattening the circular tube-shaped corrugated protection tube 62. As shown, when the corrugated tube has an elliptical shape or a substantially elliptical cross section that matches the elliptical or substantially elliptical connection hole 7, the connection hole 7 is left as it is without being deformed into a flat shape. Needless to say, it can also be connected.

そして、上記実施形態の波付管は、通水管６１を保護する波付保護管６２或いは波付鞘管６３に適用しているが、これらに限られるものではなく、他の樹脂管等の配管材やケーブル等の配線を保護する波付管についても同様に適用することができる。なお、ケーブル等の配線が接続される器具類としては、配線ボックス、スイッチボックスや地中に埋設されるハンドホールなどを挙げることができる。 And although the corrugated pipe of the said embodiment is applied to the corrugated protective pipe 62 or the corrugated sheath pipe 63 which protects the water flow pipe 61, it is not restricted to these, Pipings, such as another resin pipe The same can be applied to corrugated pipes that protect wiring such as materials and cables. In addition, examples of instruments to which wiring such as a cable is connected include a wiring box, a switch box, and a hand hole buried in the ground.

加えて、上記実施形態の管接続具１及び管接続具５１は、第１半割体２１と第２半割体３１とを第１ヒンジ１３を軸に回動し、第２半割体３１の係止片３４を第１半割体２１の被係止突起２４に係止させて筒状体に形成しているが、この係止構造に限られるものではない。また、管接続具は、２個の半割体が互いに分離したものであって、各半割体のそれぞれの両側端部に係止手段を設けて筒状体に形成するものとしてもよい。
更に、管接続具は断面が略小判形状の筒状体に形成しているが、これに限られず、四角筒状体などに形成してもよい。 In addition, the pipe connector 1 and the pipe connector 51 of the above embodiment rotate the first half 21 and the second half 31 about the first hinge 13, and the second half 31 The locking piece 34 is locked to the locked protrusion 24 of the first half 21 and formed into a cylindrical body, but is not limited to this locking structure. In addition, the pipe connector may be one in which two halves are separated from each other and formed into a cylindrical body by providing locking means at both end portions of each half.
Furthermore, although the pipe connector is formed in a cylindrical body having a substantially oval cross section, the present invention is not limited to this and may be formed in a square cylindrical body or the like.

本発明の第一実施形態の管接続具を示す斜視図である。It is a perspective view which shows the pipe connector of 1st embodiment of this invention. 図１の管接続具の平面図である。It is a top view of the pipe connector of FIG. 図１の管接続具を展開した状態の斜視図である。It is a perspective view of the state which developed the pipe connector of Drawing 1. 図３の展開した管接続具を示し、(a)は平面図、(b)は正面図である。The expanded pipe connector of FIG. 3 is shown, (a) is a top view, (b) is a front view. 図１の管接続具の接続箇所を示す正面図である。It is a front view which shows the connection location of the pipe connector of FIG. 図１の接続孔に大径の波付保護管を接続した状態における弾性復帰力の方向を示す模式図であり、(a)は接続孔の長軸と割面とが直交している場合、(b)は接続孔の長軸と割面とが同一線上にある場合を示す。It is a schematic diagram which shows the direction of the elastic return force in the state which connected the large diameter corrugated protective tube to the connection hole of FIG. 1, (a) is the case where the long axis of the connection hole and the split surface are orthogonal, (b) shows the case where the long axis and the split surface of the connection hole are on the same line. 図６(b)の状態における管接続具を示す平面図である。It is a top view which shows the pipe connector in the state of FIG.6 (b). 本発明の第二実施形態の管接続具を示す斜視図である。It is a perspective view which shows the pipe connector of 2nd embodiment of this invention.

Explanation of symbols

１、５１管接続具５３接続部
３鞘管取付部５４上部半割部
５引出部５５下部半割部
７接続孔６１通水管
８当接部６２波付保護管
８ａ、８ｂリブ６２ａ小径の波付保護管
１２割面６２ｂ大径の波付保護管
２１第１半割体６３波付鞘管
３１第２半割体Ｌ２長軸の長さ 1, 51 Pipe connector 53 Connection part
3 Shell tube mounting part 54 Upper half part 5 Drawer part 55 Lower half part 7 Connection hole 61 Water pipe
8 abutment portion 62 corrugated protective tube 8a, 8b rib 62a small diameter corrugated protective tube 12 split surface 62b large diameter corrugated protective tube 21 first half split 63 corrugated sheath tube
31 Second half L2 Length of long axis

Claims

A pipe connector that is composed of a pair of halves or is formed of a cylindrical body having a pair of halves, and is connected to a corrugated pipe formed with irregularities that are continuous in the axial direction on the outer surface,
On one end side, there is provided a sheath tube attaching portion to which a sheath tube having a water passage tube inserted therein is attached, and on the other end side, there is a drawer portion for pulling out the water passage tube passing through the inside of the cylindrical body. Provided with a contact portion that contacts the entire outer periphery of the water pipe between the sheath tube mounting portion and the drawer portion inside the cylindrical body,
A connection hole formed in at least one of the sheath tube mounting portion and the lead-out portion, to which the corrugated tube is connected;
A split surface between the pair of halves or between the pair of halves, wherein the corrugated tube is moved from the radial direction to form a half opening in the connection hole that can be disposed in the connection hole; With
The connection hole is formed in an elliptical shape or a substantially elliptical shape by closing the pair of halves or the pair of halves , and the long axis is formed in a direction perpendicular to the split surface. Characteristic pipe fitting.

The pipe connector according to claim 1 , wherein a rib that press-contacts along the outer surface of the water pipe is formed in the contact portion .

Corrugated pipes of two sizes, large and small, on the outer surface of which continuous irregularities are formed in the axial direction;
A pipe connector comprising a pair of halves or formed of a cylindrical body having a pair of halves, to which the corrugated pipe is connected;
A pipe connecting device comprising:
The pipe connector is
On one end side, there is provided a sheath tube attaching portion to which a sheath tube having a water passage tube inserted therein is attached, and on the other end side, there is a drawer portion for pulling out the water passage tube passing through the inside of the cylindrical body. Provided with a contact portion that contacts the entire outer periphery of the water pipe between the sheath tube mounting portion and the drawer portion inside the cylindrical body,
A connection hole formed in at least one of the sheath tube mounting portion and the lead-out portion, to which the corrugated tube is connected;
A split surface between the pair of halves or between the pair of halves, wherein the corrugated tube is moved from the radial direction to form a half opening in the connection hole that can be disposed in the connection hole;
With
The connection hole is
The small diameter corrugated pipe can be connected without being flattened or flattened, and the large diameter corrugated pipe can be flattened and connected to the small diameter corrugated pipe,
A pipe connection characterized in that the pair of halves or the pair of halves are closed to form an elliptical shape or a substantially elliptical shape, and the major axis is formed in a direction perpendicular to the split surface. apparatus.