JP2009236206A

JP2009236206A - Connector

Info

Publication number: JP2009236206A
Application number: JP2008082555A
Authority: JP
Inventors: Kazunari Watanabe; 一成渡辺; Takanori Matsui; 孝紀松井; Masaki Koike; 正樹小池
Original assignee: Toyoda Gosei Co Ltd
Current assignee: Toyoda Gosei Co Ltd
Priority date: 2008-03-27
Filing date: 2008-03-27
Publication date: 2009-10-15

Abstract

<P>PROBLEM TO BE SOLVED: To simplify the connecting work in piping P having a flange part Pa. <P>SOLUTION: A connector 10 makes a protruding piece 66, which extends inside a fourth connection hole 26d of a housing 20, interfere with an interfering engagement end 44b of a retainer 40 so that the retainer 40 is installed temporarily. With insertion of piping P, the protruding piece 66 is expanded once in the radial direction of piping by a flange part Pa, and deflected, and thereafter, the protruding piece 66 is elastically reset in the center direction of piping, and the flange part Pa is fitted in a recessed part 69 for engagement. Elastic reset of the protruding piece 66 and engagement of the flange part Pa with the recessed part 69 give moderate feeling, which senses a condition wherein insertion in piping is concluded, to a worker. Since the protruding piece 66 when moderate feeling is given prevents interference of an interfering part 68 with the interfering engagement part 44b, the retainer 40 in the condition wherein it is installed temporarily can be quickly installed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、外周に環状突起を有する配管の接続に用いられるコネクタに関する。 The present invention relates to a connector used for connecting a pipe having an annular protrusion on its outer periphery.

この種のコネクタは、クイックコネクタとも称されて配管接続の簡便化を目的として種々提案されている（例えば、特許文献１）。この特許文献のコネクタは、ハウジングに装着するリテーナ自体に、ハウジングの挿入孔への配管の挿入未了の状態ではリテーナの装着完了を妨げる検知爪を備える。この検知爪は、ハウジングにおけるリテーナ装着孔に係合しており、挿入孔への配管挿入に伴って環状突起に干渉して当該突起より外側に撓むことで検知爪の係合が解除されて、リテーナの装着ができるようにされている。 This type of connector is also called a quick connector, and various proposals have been made for the purpose of simplifying pipe connection (for example, Patent Document 1). The connector of this patent document is provided with a detection claw that prevents the retainer from being completely attached when the pipe is not inserted into the insertion hole of the housing. The detection claw is engaged with a retainer mounting hole in the housing, and the engagement of the detection claw is released by interfering with the annular protrusion and bending outward from the protrusion as the pipe is inserted into the insertion hole. The retainer can be installed.

特開２００５−１７２１６１号公報JP 2005-172161 A

上記した特許文献で提案されたコネクタでは、検知爪の係合解除がなされない限りリテーナの装着ができない。そして、検知爪の係合解除には、リテーナの係合爪を配管の環状突起により外側に撓んだままの状態としておくことが不可欠である。その一方、検知爪は、配管挿入に伴う環状突起との干渉の程度に応じて撓む。よって、ハウジングの挿入孔への配管挿入に際しては、どの程度まで配管を挿入すれば検知爪を係合解除可能なまで外側に撓ませることができるのか認知できず、煩雑であった。 In the connector proposed in the above-mentioned patent document, the retainer cannot be mounted unless the detection claw is disengaged. And in order to release the engagement of the detection claw, it is indispensable to keep the engagement claw of the retainer bent outward by the annular projection of the pipe. On the other hand, the detection claw bends according to the degree of interference with the annular protrusion accompanying the pipe insertion. Therefore, when inserting the pipe into the insertion hole of the housing, it is difficult to recognize how much the pipe is inserted and the detection claw can be bent outward until the engagement can be released.

本発明は、上記した課題を踏まえ、環状突起を有する配管の接続作業の簡便化を図ることをその目的とする。 In view of the above-described problems, an object of the present invention is to simplify the connection work of a pipe having an annular protrusion.

上記した目的の少なくとも一部を達成するために、本発明では、以下の構成を採用した。 In order to achieve at least a part of the above object, the present invention adopts the following configuration.

[適用：コネクタ]
外周に環状突起を有する配管の接続に用いられるコネクタであって、
前記配管が挿入されて前記環状突起を取り囲む挿入孔を有するハウジングと、
前記挿入孔の軸心と交差する交差方向から前記ハウジングに装着され、前記交差方向から前記挿入孔に入り込むようにして備えた係合部を、前記挿入孔の内部で前記環状突起に干渉させて前記配管の抜止を図るリテーナと、
前記挿入孔に配設され、前記挿入孔への配管の挿入未了の状態では、前記リテーナの前記係合部と干渉して前記リテーナの装着完了を妨げて前記リテーナを半装着状態に保持する半装着保持部とを備え、
該半装着保持部は、
前記挿入孔の内部で前記軸心に沿って延びた板状の弾発片とされ、前記配管の挿入に伴って前記環状突起により第１退避位置まで配管径方向に拡張して撓み、前記環状突起が前記リテーナの前記係合部を超えるまで前記配管の挿入が進むと、前記リテーナの前記係合部と干渉しない第２退避位置まで前記第１退避位置から弾発して戻って前記環状突起と係合する
ことを要旨とする。 [Applicable: Connector]
A connector used for connecting a pipe having an annular protrusion on the outer periphery,
A housing having an insertion hole into which the pipe is inserted and surrounds the annular protrusion;
An engaging portion that is mounted on the housing from the crossing direction that intersects the axis of the insertion hole and enters the insertion hole from the crossing direction is caused to interfere with the annular protrusion inside the insertion hole. A retainer for preventing the piping from being removed;
When the pipe is not inserted into the insertion hole, the retainer is held in a semi-mounted state by interfering with the engaging portion of the retainer and preventing the mounting of the retainer. A semi-attachment holding part,
The semi-attached holding part is
It is a plate-like elastic piece extending along the axis inside the insertion hole, and as the pipe is inserted, the ring-shaped protrusion extends to the first retraction position in the radial direction of the pipe and bends. When the insertion of the pipe proceeds until the protrusion exceeds the engaging portion of the retainer, the annular protrusion protrudes from the first retracted position to a second retracted position that does not interfere with the engaging portion of the retainer. The gist is to engage.

上記構成のコネクタでは、その有するハウジングにリテーナが挿入孔の軸心と交差する交差方向から前記ハウジングに装着され、リテーナ装着が完了すると、リテーナは、その有する係合部を挿入孔の内部で配管の環状突起に干渉させて配管の抜止を図る。その一方、挿入孔への配管の挿入未了の状態では、挿入孔の内部で軸心に沿って延びた板状の弾発片である半装着保持部がリテーナの係合部と干渉してリテーナの装着完了を妨げるので、リテーナは半装着状態に保持される。このリテーナ半装着の状態において、配管が挿入孔に挿入されると、その挿入に伴って、半装着保持部は、配管の環状突起により第１退避位置まで配管径方向に拡張して撓む。この第１退避位置までの半装着保持部材の撓みは、配管の環状突起によりもたらせられるので、半装着保持部材は、第１退避位置に撓むことでリテーナの係合部と干渉しないようになり得るが、この状況下で、配管の環状突起はリテーナの係合部を超えていないので、リテーナは、その係合部が環状突起の外周に達するまでしか装着できない。つまり、半装着保持部が第１退避位置まで撓んだ状態では、リテーナの半装着は保持されている。 In the connector having the above configuration, the retainer is mounted on the housing from the crossing direction intersecting the axis of the insertion hole, and when the retainer is completely mounted, the retainer has its engaging portion piped inside the insertion hole. To prevent the pipe from being pulled out. On the other hand, when the pipe has not been inserted into the insertion hole, the half-mounting holding part, which is a plate-like elastic piece extending along the axial center inside the insertion hole, interferes with the engaging part of the retainer. Since the installation of the retainer is hindered, the retainer is held in a semi-installed state. When the pipe is inserted into the insertion hole in the retainer half-mounted state, the half-mounted holding portion is expanded and bent in the pipe radial direction to the first retracted position by the annular protrusion of the pipe. Since the bending of the semi-attachment holding member up to the first retracted position is caused by the annular projection of the pipe, the semi-attaching holding member does not interfere with the engaging portion of the retainer by bending to the first retracted position. However, in this situation, since the annular protrusion of the pipe does not exceed the engaging portion of the retainer, the retainer can be mounted only until the engaging portion reaches the outer periphery of the annular protrusion. That is, in a state where the semi-mounting holding portion is bent to the first retracted position, the semi-mounting of the retainer is held.

このように第１退避位置まで配管径方向に拡張して撓んでいた半装着保持部は、環状突起がリテーナの係合部を超えるまで配管の挿入が進むと、第２退避位置まで第１退避位置から弾発して戻って環状突起と係合する。つまり、半装着保持部は、配管の挿入に伴って一旦は拡張して撓んだ後に、環状突起がリテーナの係合部を超えるまで配管の挿入が進むと、第２退避位置に弾発復帰して環状突起と係合する。よって、この弾発復帰とその際の環状突起との係合とにより、作業者には、環状突起がリテーナの係合部を超えるまで配管挿入が進んだ挿入完了の状態を認知する節度感を付与できる。しかも、この節度感を付与した際に半装着保持部が留まる第２退避位置は、リテーナの係合部と干渉しない位置であることから、節度感による配管挿入の完了認知に伴い、リテーナを半装着状態から速やかに装着完了状態とできる。この結果、上記構成を有するコネクタによれば、環状突起を有する配管を容易に接続でき、作業効率が高まる。なお、第２退避位置への半装着保持部の弾発復帰は、環状突起がリテーナの係合部を超えてから起きるので、この状態では、リテーナと環状突起とは配管軸方向にずれている。よって、環状突起はリテーナ装着の妨げとはならず、既述したようにリテーナを半装着状態から装着完了状態とできる。 In this way, the semi-attached holding part that has been bent and expanded in the pipe radial direction to the first retracted position is first retracted to the second retracted position when the insertion of the pipe proceeds until the annular protrusion exceeds the engaging part of the retainer. It bounces back from position and engages with the annular projection. In other words, the semi-attached holding part once expands and bends along with the insertion of the pipe and then returns to the second retracted position when the pipe is inserted until the annular protrusion exceeds the engaging part of the retainer. To engage with the annular projection. Therefore, by this elastic return and the engagement with the annular protrusion at that time, the operator has a sense of moderation that recognizes the state of completion of insertion in which the pipe insertion has progressed until the annular protrusion exceeds the engaging portion of the retainer. Can be granted. In addition, since the second retracted position where the semi-attachment holding part stays when this feeling of moderation is given is a position that does not interfere with the engaging part of the retainer, the retainer is half-finished with the recognition of the completion of the pipe insertion due to the feeling of moderation. The wearing state can be quickly completed from the wearing state. As a result, according to the connector having the above configuration, a pipe having an annular protrusion can be easily connected, and the working efficiency is increased. Note that the elastic return of the semi-attachment holding portion to the second retracted position occurs after the annular protrusion exceeds the engaging portion of the retainer. In this state, the retainer and the annular protrusion are displaced in the pipe axis direction. . Therefore, the annular protrusion does not hinder retainer mounting, and the retainer can be changed from the semi-mounted state to the mounted state as described above.

上記したコネクタは、次のような態様とすることができる。例えば、板状弾発片の半装着保持部を、前記挿入孔の開口側の干渉部位とこれより挿入孔の奥側の係合部位とを有するものとした上で、干渉部位については、これを前記リテーナの前記係合部と干渉するようにし、係合部位については、これを半装着保持部が前記第１退避位置から前記第２退避位置に弾発して戻る際に前記環状突起に係合するようにする。こうすれば、配管の環状突起が挿入孔開口側の干渉部位と干渉することで、半装着保持部は第１退避位置まで配管径方向に拡張して撓む。そして、環状突起がこの干渉部位を超えると、半装着保持部は、環状突起には係合部位を係合させるよう弾発して第２退避位置に戻る。 The connector described above can be configured as follows. For example, the half-mounting holding part of the plate-shaped bullet piece has an interference part on the opening side of the insertion hole and an engagement part on the back side of the insertion hole. With the engaging portion of the retainer, and the engaging portion is engaged with the annular projection when the semi-attached holding portion rebounds from the first retracted position to the second retracted position. Try to match. In this way, the annular projection of the pipe interferes with the interference portion on the opening side of the insertion hole, so that the semi-attached holding portion is expanded and bent in the pipe radial direction to the first retracted position. Then, when the annular protrusion exceeds the interference part, the semi-attached holding part repels the annular protrusion to engage the engaging part and returns to the second retracted position.

また、板状弾発片の半装着保持部の係合部位を前記環状突起が入り込む凹形状とすれば、より確実に上記した節度感を付与できるので、環状突起を有する配管の接続が簡便となると共に、作業効率も高まる。 In addition, if the engagement portion of the half-mounting holding portion of the plate-like bullet piece is a concave shape into which the annular protrusion enters, the above-mentioned moderation feeling can be more reliably imparted, so that the pipe having the annular protrusion can be easily connected. As a result, work efficiency increases.

更に、前記挿入孔に配設して固定される環状体を備えるようにした上で、前記半装着保持部を前記環状体の端面に一体に形成して備えるようにできる。こうすれば、挿入孔への半装着保持部の配設が容易となる。 Furthermore, after providing the annular body arrange | positioned and fixed to the said insertion hole, the said semi-attachment holding | maintenance part can be integrally formed and provided in the end surface of the said annular body. By doing so, it is easy to dispose the semi-mounting holding portion in the insertion hole.

また、この場合、前記挿入された前記配管の先端側の管路部の外周をシールするシール部材を前記挿入孔に配設した上で、このシール部材を前記環状体により前記挿入孔の配設箇所に保持するようにすることもできる。つまり、環状体をシール部材のストッパリングとして機能させる。こうすれば、シール部材の保持と挿入孔への半装着保持部の配設とを環状体で行うことができるので、部品点数の低減と、それに伴う構成の簡略化、組み付け作業の簡略化を図ることができる。 In this case, a seal member that seals the outer periphery of the pipe portion on the distal end side of the inserted pipe is disposed in the insertion hole, and the seal member is disposed in the insertion hole by the annular body. It can also be held in place. That is, the annular body functions as a stopper ring for the seal member. In this way, the seal member can be held and the semi-mounting holding portion in the insertion hole can be arranged with an annular body, so that the number of parts can be reduced, and the associated configuration and assembly work can be simplified. Can be planned.

その一方、半装着保持部を前記ハウジングと一体に形成するようにもできる。こうすれば、取り扱い部品が少なくなる分、組み付け作業の簡略化を図ることができる。 On the other hand, the semi-attached holding part can be formed integrally with the housing. By doing so, the assembly work can be simplified as much as the handling parts are reduced.

以下、本発明の実施の形態を実施例に基づいて説明する。図１は本発明の一実施例にかかるコネクタ１０を分解して示す斜視図、図２は配管Ｐの挿入未了状態でリテーナ４０を半装着した様子を示す説明図、図３は配管Ｐの挿入完了状態で配管Ｐとコネクタ１０とを配管軸線方向に沿って半断面視して示す説明図である。 Hereinafter, embodiments of the present invention will be described based on examples. FIG. 1 is an exploded perspective view showing a connector 10 according to an embodiment of the present invention, FIG. 2 is an explanatory view showing a state where a retainer 40 is semi-mounted in a state where the insertion of the pipe P is not completed, and FIG. It is explanatory drawing which shows the piping P and the connector 10 by half sectional view along a piping axial direction in the insertion completion state.

コネクタ１０は、金属製または樹脂製の配管Ｐを合成樹脂製のチューブＴｂに接続するためのものであり、ハウジング２０と、リテーナ４０と、Ｏリングからなるシール部材５６と、ストッパリング６０とを備えている。配管Ｐは、金属製または樹脂製の丸パイプ材から形成され、配管先端面から所定距離を隔てた位置の外周面上に、環状に突出したバルジ部からなるフランジ部Ｐａを備える。そして、この配管Ｐは、フランジ部Ｐａから先端側を接続部Ｐｂとし、その外周面をシール部材５６によりシールされるシール面としている。この場合、接続部Ｐｂの表面祖度は、Ｒｚ１２．５μｍ以下（ＪＩＳ：Ｂ０６０１−１９９４）になっており、シール部材５６で押圧されたときのシール性を確保している。 The connector 10 is for connecting a metal or resin pipe P to a synthetic resin tube Tb, and includes a housing 20, a retainer 40, a seal member 56 made of an O-ring, and a stopper ring 60. I have. The pipe P is formed of a round pipe material made of metal or resin, and includes a flange portion Pa formed of a bulge portion protruding in an annular shape on an outer peripheral surface at a position spaced a predetermined distance from the front end surface of the pipe. The pipe P has a connecting portion Pb on the front end side from the flange portion Pa, and a sealing surface sealed by the sealing member 56 on the outer peripheral surface thereof. In this case, the surface strength of the connecting portion Pb is Rz 12.5 μm or less (JIS: B0601-1994), and the sealing performance when pressed by the sealing member 56 is ensured.

ハウジング２０は、筒状の樹脂成型品とされ、一端側をリテーナ４０の装着筐体２２とし、他端側をチューブＴｂが圧入装着されるタケノコ状のチューブ接続部２４とする。なお、以下、コネクタ１０の装着筐体２２の側を前側、チューブ接続部２４の側を後側として、以下の説明を行なう。 The housing 20 is a cylindrical resin molded product, and one end side is a mounting housing 22 of the retainer 40, and the other end side is a bamboo shoot-like tube connecting portion 24 into which the tube Tb is press-fitted. Hereinafter, the following description will be given with the mounting housing 22 side of the connector 10 as the front side and the tube connecting portion 24 side as the rear side.

ハウジング２０は、その筒状の内部を、後方から前方に向かって多段の第１ないし第４の接続孔２６ａ〜２６ｄとする。第１接続孔２６ａは、チューブＴｂに至る流路であり、第２接続孔２６ｂは、配管Ｐの接続部Ｐｂが挿入される配管先端挿入孔である。第３接続孔２６ｃは、シール部材５６と後述のストッパリング６０の装着孔であり、後方側からシール部材５６とストッパリング６０（詳しくはリング部６２）を並べて収容する。この場合、第３接続孔２６ｃの周壁には環状凹所２７が形成されており、この環状凹所２７にストッパリング６０が有する環状凸部６４を嵌め込むことで、シール部材５６は、第３接続孔２６ｃに収容されてストッパリング６０により保持される。第４接続孔２６ｄは、装着筐体２２の外形に倣って方形の有底孔であり、配管Ｐの挿入に伴いフランジ部Ｐａが入り込んで当該フランジ部を取り囲むフランジ挿入孔である。 The housing 20 has a cylindrical interior as first to fourth connection holes 26a to 26d that are multistage from the rear to the front. The first connection hole 26a is a flow path leading to the tube Tb, and the second connection hole 26b is a pipe tip insertion hole into which the connection part Pb of the pipe P is inserted. The third connection hole 26c is a mounting hole for the seal member 56 and a stopper ring 60 described later, and accommodates the seal member 56 and the stopper ring 60 (specifically, the ring portion 62) side by side from the rear side. In this case, an annular recess 27 is formed in the peripheral wall of the third connection hole 26c, and the annular protrusion 64 included in the stopper ring 60 is fitted into the annular recess 27, so that the seal member 56 has a third shape. It is accommodated in the connection hole 26c and held by the stopper ring 60. The fourth connection hole 26 d is a rectangular bottomed hole that follows the outer shape of the mounting housing 22, and is a flange insertion hole that surrounds the flange portion when the flange portion Pa enters with the insertion of the pipe P.

この他、ハウジング２０は、リテーナ４０の装着のため、装着筐体２２の図１における左右側面に二筋の案内溝２８を備え、筐体上面には、前方側の案内溝２８に繋がるリテーナ装着溝２９を備える。このリテーナ装着溝２９は、案内溝２８との連続箇所において有底とされており、この有底箇所以外にあっては貫通されて、リテーナ装着孔３０とされている。図４はハウジング２０の案内溝２８の下端部周辺を断面視して示す説明図である。この図４に示すように、案内溝２８の下端は、リテーナ４０が有するリテーナ係合爪４３の係合凹所２８ｂとされている。 In addition, the housing 20 is provided with two guide grooves 28 on the left and right side surfaces in FIG. 1 of the mounting housing 22 for mounting the retainer 40, and the retainer mounted on the upper surface of the housing is connected to the front guide groove 28. A groove 29 is provided. The retainer mounting groove 29 has a bottom at a portion continuous with the guide groove 28, and the retainer mounting groove 29 is penetrated at a portion other than the bottomed portion to form a retainer mounting hole 30. FIG. 4 is an explanatory view showing the periphery of the lower end portion of the guide groove 28 of the housing 20 in a sectional view. As shown in FIG. 4, the lower end of the guide groove 28 is an engagement recess 28 b of a retainer engagement claw 43 included in the retainer 40.

リテーナ４０は、樹脂成型品であり、上記した第４接続孔２６ｄの軸心と直交する方向からのハウジング２０への装着を図るため、リテーナ頂上をなす板状のリテーナ操作部４１の両端にそれぞれ二本の係合腕４２を備え、その先端を案内溝２８下端の係合凹所２８ｂに係合するリテーナ係合爪４３とする。また、このリテーナ４０は、配管Ｐの抜止を図るべく、リテーナ操作部４１の長手方向において板状に突出した左右係合腕４４と中央係合腕４６とを備え、左右係合腕４４の先端を後述のストッパリング６０の突出片６６に干渉する干渉係合端４４ｂとする。上記した左右係合腕４４と中央係合腕４６は、ハウジング２０へのリテーナ４０の装着に際して、リテーナ操作部４１におけるリテーナ装着溝２９のリテーナ装着孔３０から第４接続孔２６ｄの内部に当該接続孔の軸芯と直交する方向から入り込む。 The retainer 40 is a resin molded product, and is attached to both ends of a plate-like retainer operation portion 41 that forms the top of the retainer in order to be mounted on the housing 20 from a direction orthogonal to the axis of the fourth connection hole 26d. The two engaging arms 42 are provided, and the tip thereof is a retainer engaging claw 43 that engages with the engaging recess 28 b at the lower end of the guide groove 28. The retainer 40 includes a left and right engagement arm 44 and a central engagement arm 46 that project in a plate shape in the longitudinal direction of the retainer operation portion 41 in order to prevent the pipe P from being removed. Is an interference engaging end 44b that interferes with a protruding piece 66 of a stopper ring 60 described later. When the retainer 40 is mounted on the housing 20, the left and right engaging arms 44 and the central engaging arm 46 are connected from the retainer mounting hole 30 of the retainer mounting groove 29 in the retainer operating portion 41 to the inside of the fourth connection hole 26 d. It enters from the direction orthogonal to the axial center of the hole.

図５はリテーナ４０を正面視して示す説明図である。この図５に示すように、リテーナ４０は、この正面視において、中央係合腕４６と左右係合腕４４に円弧形状で切り欠いた円弧周縁４８を備え、干渉係合端４４ｂには円弧形状に切り欠いた円弧周縁４９を備える。円弧周縁４８は、配管Ｐの管路部外径ＰΦより大きく、フランジ部Ｐａの外周縁直径ＰａΦより小さく形成され、円弧周縁４９は、干渉係合端４４ｂの下端面積を小さくするよう、円弧周縁４８に繋げて円弧状に形成されている。ハウジング２０へのリテーナ４０の装着が完了した状態では、左右係合腕４４と中央係合腕４６は、配管Ｐおよびフランジ部Ｐａに対して図５に示すような位置関係を取ることから、上記した円弧周縁４８をフランジ部Ｐａに干渉させて配管Ｐの抜止を図る。左右係合腕４４と中央係合腕４６とによるこうした抜止を図るため、ハウジング２０では、配管Ｐにおけるフランジ部Ｐａの形成位置を考慮して、リテーナ装着孔３０がリテーナ装着溝２９と共に形成されている。 FIG. 5 is an explanatory view showing the retainer 40 as viewed from the front. As shown in FIG. 5, the retainer 40 includes an arc peripheral edge 48 that is cut out in an arc shape in the center engagement arm 46 and the left and right engagement arms 44 in the front view, and the interference engagement end 44 b has an arc shape. A circular arc periphery 49 is provided. The arc peripheral edge 48 is formed to be larger than the pipe portion outer diameter PΦ of the pipe P and smaller than the outer peripheral diameter PaΦ of the flange portion Pa, and the arc peripheral edge 49 is configured to reduce the lower end area of the interference engagement end 44b. 48 is formed in an arc shape. In a state in which the retainer 40 has been attached to the housing 20, the left and right engaging arms 44 and the central engaging arm 46 have the positional relationship shown in FIG. 5 with respect to the pipe P and the flange portion Pa. The circular arc periphery 48 thus made interferes with the flange portion Pa to prevent the piping P from being removed. In order to prevent such a disconnection by the left and right engaging arms 44 and the central engaging arm 46, in the housing 20, the retainer mounting hole 30 is formed together with the retainer mounting groove 29 in consideration of the formation position of the flange portion Pa in the pipe P. Yes.

図１に示すストッパリング６０は、樹脂成型品であり、環状のリング部６２の一端側に二つの突出片６６を備え、リング部６２の外周壁に環状凸部６４を備える。二つの突出片６６は、リング部６２に等ピッチで形成されている。そして、この突出片６６は、その基部に二筋の半円状の溝６７を備え、先端側から、鍵状の干渉部６８と凹状陥没部６９とを並べて備える。凹状陥没部６９は、配管Ｐのフランジ部Ｐａが入り込むよう形成されている。 A stopper ring 60 shown in FIG. 1 is a resin molded product, and includes two projecting pieces 66 on one end side of an annular ring portion 62, and an annular convex portion 64 on an outer peripheral wall of the ring portion 62. The two protruding pieces 66 are formed in the ring portion 62 at an equal pitch. The projecting piece 66 includes two semicircular grooves 67 at the base, and includes a key-shaped interference portion 68 and a concave depression 69 arranged side by side from the distal end side. The concave depressed portion 69 is formed so that the flange portion Pa of the pipe P enters.

上記構成のストッパリング６０がそのリング部６２を第３接続孔２６ｃに入り込ませて収容されると、突出片６６は、第４接続孔２６ｄ内に位置して対向すると共に、第４接続孔２６ｄの内部で当該接続孔の軸心に沿って延びる。突出片６６を有するストッパリング６０は樹脂成型品であり、突出片６６は、リング部６２から突出した板状体であることから、接続孔の径方向に拡張可能な弾発片となる。そして、この突出片６６は、図２や図３に示すように、干渉部６８を、ハウジング２０に装着されたリテーナ４０における左右係合腕４４の干渉係合端４４ｂに干渉させて、リテーナ４０の装着完了を妨げる。よって、配管Ｐの挿入未了の状態では、リテーナ４０は、突出片６６の干渉部６８と干渉係合端４４ｂとの干渉により、図２や図３に示す半装着の状態に保持される。 When the stopper ring 60 having the above-described configuration is accommodated with the ring portion 62 inserted into the third connection hole 26c, the protruding piece 66 is positioned and opposed in the fourth connection hole 26d, and the fourth connection hole 26d. Extends along the axis of the connection hole. The stopper ring 60 having the protruding piece 66 is a resin molded product. Since the protruding piece 66 is a plate-like body protruding from the ring portion 62, it becomes a resilient piece that can be expanded in the radial direction of the connection hole. As shown in FIGS. 2 and 3, the protruding piece 66 causes the interference portion 68 to interfere with the interference engagement end 44 b of the left and right engagement arms 44 of the retainer 40 attached to the housing 20. The completion of the installation is hindered. Therefore, in a state where the insertion of the pipe P has not been completed, the retainer 40 is held in the half-mounted state shown in FIGS. 2 and 3 due to the interference between the interference portion 68 of the protruding piece 66 and the interference engagement end 44b.

リング部６２と突出片６６とは、配管Ｐの接続部Ｐｂの外径より大きく形成されているので、ストッパリング６０の収容済みのハウジング２０において、配管Ｐは、その接続部Ｐｂをリング部６２と突出片６６およびシール部材５６に入り込むようハウジング２０の第２接続孔２６ｂに挿入される。突出片６６の干渉部６８は、その外周端がフランジ部Ｐａの外径より大きくされているので、配管Ｐは、上記した挿入に際して、フランジ部Ｐａの端面を干渉部６８に押し当てる。更に配管Ｐの挿入を進めると、突出片６６は、フランジ部Ｐａにより配管径方向に拡張して撓むので、配管接続に向けて配管挿入が継続される。突出片６６の拡張は、突出片基部の溝６７により容易に起きる。 Since the ring part 62 and the projecting piece 66 are formed larger than the outer diameter of the connection part Pb of the pipe P, in the housing 20 in which the stopper ring 60 is accommodated, the pipe P connects the connection part Pb to the ring part 62. And is inserted into the second connection hole 26 b of the housing 20 so as to enter the protruding piece 66 and the seal member 56. Since the outer peripheral end of the interference part 68 of the protruding piece 66 is larger than the outer diameter of the flange part Pa, the pipe P presses the end surface of the flange part Pa against the interference part 68 during the above-described insertion. When the insertion of the pipe P is further advanced, the protruding piece 66 is expanded and bent in the pipe radial direction by the flange portion Pa, so that the pipe insertion is continued toward the pipe connection. Expansion of the protruding piece 66 is easily caused by the groove 67 of the protruding piece base.

図６は突出片６６により半装着の状態とされたリテーナ４０と配管Ｐとの位置関係を示す説明図である。この図６に示すように、リテーナ４０の半装着の状態では、干渉係合端４４ｂは、フランジ部Ｐａの外側に位置しつつ突出片６６の干渉部６８に干渉している。円弧周縁４９は、フランジ部Ｐａの外周側に位置することから、リテーナ４０の半装着の状態において、配管Ｐは、そのフランジ部Ｐａを干渉係合端４４ｂや円弧周縁４９に干渉させることなく、図における紙面奥側に挿入可能であり、突出片６６の干渉部６８に一旦干渉した後、既述したように突出片６６を配管径方向に拡張するよう撓ませて、更に挿入される。 FIG. 6 is an explanatory diagram showing the positional relationship between the retainer 40 and the pipe P that are half-mounted by the protruding piece 66. As shown in FIG. 6, when the retainer 40 is half-mounted, the interference engagement end 44 b interferes with the interference portion 68 of the protruding piece 66 while being located outside the flange portion Pa. Since the arc peripheral edge 49 is located on the outer peripheral side of the flange portion Pa, the pipe P does not interfere with the interference engagement end 44b and the arc peripheral edge 49 in the half-mounted state of the retainer 40. It can be inserted into the back side of the drawing sheet in the figure, and after once interfering with the interference portion 68 of the protruding piece 66, the protruding piece 66 is bent so as to expand in the pipe radial direction as described above, and further inserted.

次に、配管Ｐの接続の様子を説明する。図７は配管Ｐの挿入に伴う突出片６６の挙動を示す説明図である。まず、配管挿入前のコネクタ１０の様子について説明する。配管挿入前、即ち配管接続前において、コネクタ１０は、リテーナ４０の係合腕４２をハウジング２０の案内溝２８に挿入させてリテーナ４０をハウジング２０に装着させる。このリテーナ装着に伴い、コネクタ１０は、リテーナ４０の中央係合腕４６と中央係合腕４６とをリテーナ装着孔３０から第４接続孔２６ｄの内部に入り込ませる。ハウジング２０の第３接続孔２６ｃに収容済みのストッパリング６０は、既述したように突出片６６を第４接続孔２６ｄの内部に位置させるので、リテーナ４０は、左右係合腕４４の干渉係合端４４ｂが突出片６６の干渉部６８に干渉することで、それ以上の挿入は妨げられ、図２に示す半装着の状態で保持される。 Next, how the pipe P is connected will be described. FIG. 7 is an explanatory view showing the behavior of the protruding piece 66 accompanying the insertion of the pipe P. FIG. First, the state of the connector 10 before pipe insertion will be described. Before inserting the pipe, that is, before connecting the pipe, the connector 10 inserts the engaging arm 42 of the retainer 40 into the guide groove 28 of the housing 20 and attaches the retainer 40 to the housing 20. As the retainer is mounted, the connector 10 causes the center engaging arm 46 and the center engaging arm 46 of the retainer 40 to enter the inside of the fourth connection hole 26 d from the retainer mounting hole 30. The stopper ring 60 accommodated in the third connection hole 26c of the housing 20 positions the protruding piece 66 inside the fourth connection hole 26d as described above. Since the joint end 44b interferes with the interference portion 68 of the protruding piece 66, further insertion is prevented and the half-mounting state shown in FIG. 2 is held.

このようにリテーナ４０の半装着の状態で、配管Ｐは、その接続部Ｐｂの側から第４接続孔２６ｄに挿入される。まず、配管Ｐは、既述したように半装着のリテーナ４０における干渉係合端４４ｂや円弧周縁４９に干渉することなく第４接続孔２６ｄを通過し、接続部Ｐｂがリング部６２やシール部材５６を超えて第２接続孔２６ｂに入り込むまで挿入される（図７（Ａ））。こうなると、配管Ｐのフランジ部Ｐａは、突出片６６の先端の干渉部６８に干渉するが、さらなる配管挿入により、突出片６６を配管径方向に拡張するよう撓ませる（図７（Ｂ））。この図７（Ｂ）に示す姿勢にある突出片６６は、本発明における第１退避位置にあることになる。そして、上記したように拡張して撓んだ突出片６６は、この撓みがフランジ部Ｐａによりもたらせられたものであることから、リテーナ４０の干渉係合端４４ｂと干渉しなくなる。ところが、この状況では、フランジ部Ｐａはリテーナ４０の干渉係合端４４ｂを超えていないので、リテーナ４０は、干渉係合端４４ｂがフランジ部Ｐａの外周に達するまでしか装着でず、リテーナ４０の半装着は保持されることになる。 In this way, with the retainer 40 being semi-mounted, the pipe P is inserted into the fourth connection hole 26d from the connection portion Pb side. First, as described above, the pipe P passes through the fourth connection hole 26d without interfering with the interference engagement end 44b or the arc peripheral edge 49 of the semi-mounted retainer 40, and the connection part Pb is connected to the ring part 62 or the seal member. It is inserted until it exceeds 56 and enters the second connection hole 26b (FIG. 7A). In this case, the flange portion Pa of the pipe P interferes with the interference portion 68 at the tip of the protruding piece 66, but is further bent to expand the protruding piece 66 in the pipe radial direction by further pipe insertion (FIG. 7B). . The protruding piece 66 in the posture shown in FIG. 7B is in the first retracted position in the present invention. Then, the protruding piece 66 which is expanded and bent as described above does not interfere with the interference engagement end 44b of the retainer 40 because this bending is caused by the flange portion Pa. However, in this situation, since the flange portion Pa does not exceed the interference engagement end 44b of the retainer 40, the retainer 40 can be mounted only until the interference engagement end 44b reaches the outer periphery of the flange portion Pa. Half-mounting will be held.

突出片６６が既述したように撓むので、配管Ｐは更に挿入される。そして、配管Ｐの挿入が進んで、フランジ部Ｐａが半装着状態のリテーナ４０の左右係合腕４４や中央係合腕４６を超えると、フランジ部Ｐａは突出片６６の凹状陥没部６９に入り込んで係合する（図７（Ｃ））。こうなると、この図７（Ｃ）に示すように、干渉部６８は干渉係合端４４ｂと干渉しないと共に、フランジ部Ｐａはリテーナ４０の左右係合腕４４および中央係合腕４６から配管軸方向後端側にずれているので、半装着のリテーナ４０を速やかに装着できる。具体的には、リテーナ４０を図２や図３に示す半装着の状態から更に押し込んで、係合腕４２の下端のリテーナ係合爪４３をハウジング２０における案内溝２８の係合凹所２８ｂに係合させる（図４参照）。なお、図７（Ｃ）に示す姿勢にある突出片６６は、本発明における第２退避位置に弾発復帰したことになる。 Since the protruding piece 66 bends as described above, the pipe P is further inserted. When the insertion of the pipe P proceeds and the flange portion Pa exceeds the left and right engagement arms 44 and the central engagement arm 46 of the retainer 40 in the semi-mounted state, the flange portion Pa enters the recessed depression 69 of the protruding piece 66. (Fig. 7C). 7C, the interference portion 68 does not interfere with the interference engagement end 44b, and the flange portion Pa extends from the left and right engagement arms 44 and the central engagement arm 46 of the retainer 40 in the pipe axis direction. Since it is shifted to the rear end side, the semi-mounted retainer 40 can be quickly mounted. Specifically, the retainer 40 is further pushed in from the half-mounted state shown in FIGS. 2 and 3, and the retainer engagement claw 43 at the lower end of the engagement arm 42 is inserted into the engagement recess 28 b of the guide groove 28 in the housing 20. Engage (see FIG. 4). Note that the protruding piece 66 in the posture shown in FIG. 7C has been resiliently returned to the second retracted position in the present invention.

こうしてリテーナ４０が装着されると、配管Ｐは、接続部Ｐｂをシール部材５６によりシールされた上で、コネクタ１０によりチューブＴｂに接続される。そして、この接続状態において、本実施例のコネクタ１０は、リテーナ４０が有する左右係合腕４４と中央係合腕４６とを第４接続孔２６ｄの内部で配管Ｐのフランジ部Ｐａに干渉させて、配管の抜止を図る。 When the retainer 40 is thus mounted, the pipe P is connected to the tube Tb by the connector 10 after the connection portion Pb is sealed by the seal member 56. In this connected state, the connector 10 of the present embodiment causes the left and right engaging arms 44 and the central engaging arm 46 of the retainer 40 to interfere with the flange portion Pa of the pipe P inside the fourth connecting hole 26d. , Try to prevent the piping from being removed.

以上説明したように、本実施例のコネクタ１０では、配管Ｐの挿入を完了させて、半装着状態のリテーナ４０の装着を完了させるに当たり、配管Ｐの挿入に伴って、フランジ部Ｐａにより突出片６６を図７（Ｂ）に示すように配管径方向に一旦拡張して撓ませる。そして、コネクタ１０は、こうして一旦拡張して撓ませた突出片６６を、フランジ部Ｐａが半装着のリテーナ４０の左右係合腕４４と中央係合腕４６を超えるまで配管Ｐの挿入が進むと配管中心方向に弾発復帰させて、凹状陥没部６９にフランジ部Ｐａを入り込ませて係合させる。よって、この突出片６６の弾発復帰とその際のフランジ部Ｐａと凹状陥没部６９との係合とにより、作業者には、フランジ部Ｐａがリテーナ４０の左右係合腕４４と中央係合腕４６を超えるまで配管挿入が進んだ挿入完了の状態を認知する節度感を付与できる。しかも、この節度感を付与した際の突出片６６は、図７（Ｃ）に示すように、配管挿入前まで干渉係合端４４ｂに干渉していた干渉部６８をこの干渉係合端４４ｂと干渉しない姿勢にするので、節度感による配管挿入の完了認知に伴い、半装着のリテーナ４０を速やかに装着できる。この結果、本実施例のコネクタ１０によれば、配管Ｐの挿入完了の節度感付与により、フランジ部Ｐａを有する配管Ｐの接続作業の簡便化することができ、作業効率も高まる。 As described above, in the connector 10 of the present embodiment, when the insertion of the pipe P is completed and the mounting of the retainer 40 in the semi-mounted state is completed, the projecting piece by the flange portion Pa is inserted along with the insertion of the pipe P. 66 is temporarily expanded and bent in the pipe radial direction as shown in FIG. Then, when the connector 10 advances the insertion of the pipe P until the flange piece Pa exceeds the left and right engaging arms 44 and the central engaging arm 46 of the retainer 40 that is semi-mounted, the protruding piece 66 once expanded and bent in this way. The spring is returned to the center of the pipe, and the flange portion Pa is inserted into and engaged with the recessed portion 69. Therefore, the flange portion Pa is engaged with the left and right engagement arms 44 of the retainer 40 by the center engagement by the elastic return of the projecting piece 66 and the engagement between the flange portion Pa and the concave depression 69 at that time. A moderation feeling can be given to recognize the state of completion of pipe insertion until the arm 46 is exceeded. In addition, as shown in FIG. 7C, the protruding piece 66 when this moderation feeling is imparted causes the interference portion 68 that has interfered with the interference engagement end 44b until the pipe is inserted to the interference engagement end 44b. Since the posture is set so as not to interfere, the semi-retained retainer 40 can be quickly mounted in accordance with the recognition of completion of pipe insertion due to a sense of moderation. As a result, according to the connector 10 of the present embodiment, the connection work of the pipe P having the flange portion Pa can be simplified by providing a moderation feeling of the completion of the insertion of the pipe P, and the work efficiency is also increased.

また、本実施例のコネクタ１０では、配管Ｐの挿入完了の節度感付与に際して、突出片６６の凹状陥没部６９にフランジ部Ｐａが入り込むようにしたので、節度感付与と共に、フランジ部Ｐａ、延いては配管Ｐが不用意に前後しないように保持できる。よって、節度感による挿入完了の認知後に行うリテーナ４０の装着完了作業を確実に行うことができる。しかも、凹状陥没部６９へのフランジ部Ｐａの入り込みにより、節度感も強くできるので、挿入完了認知の確実性も高まり好ましい。 In addition, in the connector 10 of the present embodiment, the flange portion Pa enters the concave depression 69 of the protruding piece 66 when the moderation feeling of the insertion of the pipe P is completed. Therefore, it can hold | maintain so that the piping P may not go around carelessly. Therefore, the installation completion work of the retainer 40 performed after recognizing the completion of insertion due to a sense of moderation can be reliably performed. Moreover, since the moderation feeling can be increased by the insertion of the flange portion Pa into the concave depression 69, the certainty of the recognition of completion of insertion is also preferred.

更に、本実施例のコネクタ１０では、ストッパリング６０のリング部６２の端面から突出片６６を突出させた上で、リング部６２に設けた環状凸部６４を第３接続孔２６ｃの環状凹所２７に嵌め込んで、ストッパリング６０を第３接続孔２６ｃに固定した。よって、第４接続孔２６ｄにおいて、突出片６６を配管軸心に沿って延びるよう容易に配設できる。また、第３接続孔２６ｃへのストッパリング６０の固定と共に突出片６６の配設も完了するので、簡便である。 Further, in the connector 10 of the present embodiment, the protruding piece 66 is protruded from the end surface of the ring portion 62 of the stopper ring 60, and the annular protrusion 64 provided on the ring portion 62 is then connected to the annular recess of the third connection hole 26c. 27, the stopper ring 60 was fixed to the third connection hole 26c. Therefore, in the fourth connection hole 26d, the protruding piece 66 can be easily disposed so as to extend along the piping axis. Further, since the stopper piece 60 is fixed to the third connection hole 26c and the disposition of the protruding piece 66 is completed, it is simple.

また、本実施例のコネクタ１０では、配管Ｐの接続部Ｐｂをその外周でシールするシール部材５６を第３接続孔２６ｃに配設した上で、このシール部材５６をストッパリング６０（詳しくは、リング部６２）で保持する。よって、第３接続孔２６ｃでのシール部材５６の保持と第４接続孔２６ｄでの突出片６６の配設とを、リング部６２で行うことができるので、部品点数の低減と、それに伴う構成の簡略化、組み付け作業の簡略化を図ることができる。 Further, in the connector 10 of the present embodiment, the seal member 56 that seals the connection portion Pb of the pipe P at the outer periphery thereof is disposed in the third connection hole 26c, and then the seal member 56 is attached to the stopper ring 60 (in detail, It is held by the ring part 62). Therefore, the holding of the seal member 56 in the third connection hole 26c and the arrangement of the protruding piece 66 in the fourth connection hole 26d can be performed by the ring portion 62, so that the number of parts can be reduced and the configuration associated therewith Simplification and assembly work can be simplified.

なお、配管Ｐを接続済みのコネクタ１０から配管Ｐの接続を解くには、リテーナ４０のリテーナ係合爪４３をハウジング２０の係合凹所２８ｂから外して、リテーナ４０を引き抜けばよい。そうすれば、リテーナ４０の左右係合腕４４と中央係合腕４６はフランジ部Ｐａに干渉しない位置まで退避するので、配管Ｐを引き抜くことができる。 In order to disconnect the pipe P from the connector 10 to which the pipe P is already connected, the retainer engagement claw 43 of the retainer 40 may be removed from the engagement recess 28b of the housing 20 and the retainer 40 may be pulled out. Then, the left and right engaging arms 44 and the central engaging arm 46 of the retainer 40 are retracted to a position where they do not interfere with the flange portion Pa, so that the pipe P can be pulled out.

次に、他の実施例について説明する。この実施例では、シール部材５６のストッパ機能を兼ね備えないリング部６２Ａに突出片６６に代わる突出片６６Ａを一体とした点に特徴がある。図８は他の実施例のコネクタ１０Ａにおける突出片６６Ａと一体のリング部６２Ａとを概略的に示す斜視図、図９は図７相当図でありコネクタ１０Ａにおける突出片６６Ａの挙動を示す説明図である。 Next, another embodiment will be described. This embodiment is characterized in that a projecting piece 66A instead of the projecting piece 66 is integrated with a ring portion 62A that does not have a stopper function of the seal member 56. FIG. 8 is a perspective view schematically showing a protruding piece 66A and an integral ring portion 62A in a connector 10A of another embodiment, and FIG. 9 is an equivalent view of FIG. 7 and an explanatory view showing the behavior of the protruding piece 66A in the connector 10A. It is.

図８に示すように、リング部６２Ａは、その一端側に突出片６６Ａを備える。この突出片６６Ａは、湾曲してリング内側に凸に延びて湾曲した湾曲部位を、既述した突出片６６における干渉部６８に代わる干渉部６８Ａとし、当該干渉部から延びて干渉部６８Ａと反対に湾曲した先端部位を、凹状陥没部６９に代わるフランジ係合部６９Ａとする。そして、この実施例では、向かい合う突出片６６Ａを、リング部６２Ａの一方端側（図における上方側）にオフセットして形成した。 As shown in FIG. 8, the ring portion 62A includes a protruding piece 66A on one end side thereof. The protruding piece 66A is a curved portion that is curved and extends convexly inward of the ring, and serves as an interference portion 68A that replaces the interference portion 68 in the protruding piece 66 described above, and extends from the interference portion and is opposite to the interference portion 68A. The distal end portion curved in the direction is a flange engaging portion 69 </ b> A that replaces the recessed depression 69. In this embodiment, the protruding pieces 66A facing each other are formed offset to one end side (the upper side in the drawing) of the ring portion 62A.

リング部６２Ａは、環状であることから、図９に示すようにこのリング部６２Ａが装着されるハウジング２０Ａは、第４接続孔２６ｄを有底の円形孔としている。そして、ハウジング２０Ａは、接続孔周壁の環状凹所３５にリング部６２Ａの環状凸部６４を嵌め込むことで、第４接続孔２６ｄにリング部６２Ａを保持する。このリング部保持に当たっては、干渉部６８Ａが第４接続孔２６ｄの開口側となるようにされる。なお、ハウジング２０Ａを既述した方形の有底孔の第４接続孔２６ｄを有するハウジングとすれば、リング部６２Ａを方形の環状体とすればよい。また、コネクタ１０Ａにあっては、シール部材５６は、単なる環状体のストッパリング６０Ａにて保持されている。 Since the ring portion 62A is annular, the housing 20A to which the ring portion 62A is mounted has a fourth connecting hole 26d as a circular hole with a bottom, as shown in FIG. The housing 20A holds the ring portion 62A in the fourth connection hole 26d by fitting the annular convex portion 64 of the ring portion 62A into the annular recess 35 of the connection hole peripheral wall. In holding the ring portion, the interference portion 68A is located on the opening side of the fourth connection hole 26d. If the housing 20A is the housing having the square bottomed fourth connection hole 26d described above, the ring portion 62A may be a rectangular annular body. In the connector 10A, the seal member 56 is held by a simple annular stopper ring 60A.

こうしてリング部６２Ａが第４接続孔２６ｄに保持されると、図９に示すように、突出片６６Ａにあっても、第４接続孔２６ｄ内に位置して対向すると共に、第４接続孔２６ｄの内部で当該接続孔の軸心に沿って延び、接続孔の径方向に拡張可能な弾発片となる。そして、この突出片６６Ａは、その干渉部６８Ａを、図９（Ａ）に示すように、リテーナ４０の干渉係合端４４ｂに干渉させて、リテーナ４０の装着完了を妨げる。よって、配管Ｐの挿入未了の状態では、リテーナ４０は、突出片６６Ａの干渉部６８Ａと干渉係合端４４ｂとの干渉により、既述したように半装着の状態に保持される。なお、図９では、干渉係合端４４ｂはフランジ部Ｐａと干渉して図示されているが、既述したように、突出片６６Ａはリング部６２Ａの上方側にオフセットされているので（図８参照）、紙面上下方向で見れば、この干渉係合端４４ｂはフランジ部Ｐａより紙面上方に位置することになる。よって、配管挿入未了の状態、即ちリテーナの半装着の状態では、干渉係合端４４ｂはフランジ部Ｐａと干渉することはない。後述するようにリテーナの装着が完了すれば、干渉係合端４４ｂは、既述した実施例の場合と同様に配管Ｐの側に下がるので、フランジ部Ｐａと干渉することになる。 When the ring portion 62A is held in the fourth connection hole 26d in this way, as shown in FIG. 9, even if it is in the protruding piece 66A, it is located in and opposed to the fourth connection hole 26d, and the fourth connection hole 26d. The elastic piece extends along the axial center of the connection hole and expands in the radial direction of the connection hole. And this protrusion piece 66A makes the interference part 68A interfere with the interference engaging end 44b of the retainer 40, as shown in FIG. Therefore, in the state where the insertion of the pipe P has not been completed, the retainer 40 is held in the half-mounted state as described above due to the interference between the interference portion 68A of the protruding piece 66A and the interference engagement end 44b. In FIG. 9, the interference engagement end 44b is shown in interference with the flange portion Pa. However, as described above, the protruding piece 66A is offset to the upper side of the ring portion 62A (FIG. 8). As seen in the vertical direction of the paper surface, the interference engagement end 44b is positioned above the flange surface Pa. Therefore, the interference engagement end 44b does not interfere with the flange portion Pa in a state where the pipe has not been inserted, that is, in a state where the retainer is half mounted. As will be described later, when the retainer is completely attached, the interference engaging end 44b is lowered to the pipe P as in the case of the above-described embodiment, and thus interferes with the flange portion Pa.

図８や図９（Ａ）に示すように、突出片６６Ａは、干渉部６８Ａをリング内側に湾曲させているので、配管Ｐは、配管挿入に伴って、フランジ部Ｐａの端面を干渉部６８Ａに押し当てる。更に配管Ｐの挿入を進めると、突出片６６Ａは、フランジ部Ｐａにより配管径方向に拡張されて撓み（図９（Ｂ））、フランジ部Ｐａが半装着状態のリテーナ４０の左右係合腕４４や中央係合腕４６を超えると、フランジ部Ｐａは、フランジ外周縁において突出片６６Ａ先端のフランジ係合部６９Ａと係合する（図９（Ｃ））。こうなると、図９（Ｃ）に示すように、配管挿入前まで干渉係合端４４ｂに干渉していた干渉部６８Ａは、もはや干渉係合端４４ｂと干渉しないようになるので、半装着のリテーナ４０を既述したように速やかに装着できる。 As shown in FIG. 8 and FIG. 9A, the protruding piece 66A has the interference portion 68A curved inward of the ring, so that the pipe P causes the end face of the flange portion Pa to be moved to the interference portion 68A as the pipe is inserted. Press against. When the insertion of the pipe P is further advanced, the projecting piece 66A is expanded and bent in the pipe radial direction by the flange portion Pa (FIG. 9B), and the left and right engaging arms 44 of the retainer 40 with the flange portion Pa in a semi-mounted state. When the center engaging arm 46 is exceeded, the flange portion Pa engages with the flange engaging portion 69A at the tip of the protruding piece 66A at the outer peripheral edge of the flange (FIG. 9C). In this case, as shown in FIG. 9C, the interference portion 68A that has interfered with the interference engagement end 44b before the pipe is inserted no longer interferes with the interference engagement end 44b. 40 can be quickly installed as described above.

従って、図８や図９に示す形態のコネクタ１０Ａによっても、配管Ｐの挿入に伴って、フランジ部Ｐａにより突出片６６Ａを配管径方向に一旦拡張して撓ませた後に、この突出片６６Ａを配管中心方向に弾発復帰させて、フランジ係合部６９Ａをフランジ部Ｐａの外縁に係合させる。この結果、この実施例のコネクタ１０Ａによっても、突出片６６Ａの弾発復帰とその際のフランジ部Ｐａ外縁へのフランジ係合部６９Ａの係合とにより、作業者に挿入完了の状態を認知する節度感を付与できるので、既述した効果を奏することができる。 Therefore, even with the connector 10A of the form shown in FIGS. 8 and 9, the protruding piece 66A is temporarily expanded and bent in the pipe radial direction by the flange portion Pa along with the insertion of the pipe P, and then the protruding piece 66A is The flange engagement part 69A is engaged with the outer edge of the flange part Pa by elastically returning in the pipe center direction. As a result, the connector 10A of this embodiment also recognizes the state of insertion completion to the operator by the resilient return of the protruding piece 66A and the engagement of the flange engaging portion 69A with the outer edge of the flange portion Pa at that time. Since moderation can be imparted, the effects described above can be achieved.

次に、また別の実施例について説明する。この実施例では、突出片６６Ａに代わる突出片６６Ｂをハウジングに一体とした点に特徴がある。図１０は図９相当図でありコネクタ１０Ｂに突出片６６Ｂの挙動を示す説明図である。 Next, another embodiment will be described. This embodiment is characterized in that a protruding piece 66B instead of the protruding piece 66A is integrated with the housing. FIG. 10 is a view corresponding to FIG. 9 and is an explanatory view showing the behavior of the protruding piece 66B on the connector 10B.

図１０に示すように、ハウジング２０Ｂは、その第４接続孔２６ｄの奥壁に突出片６６Ｂを備える。この突出片６６Ｂは、屈曲しつつ第４接続孔２６ｄ内において配管軸芯方向の前端側に延び、外側に屈曲する。そして、突出片６６Ｂは、その先端の屈曲部位を、既述した突出片６６における干渉部６８に代わる干渉部６８Ｂとし、当該干渉部より接続孔奥壁側の突出片基部側部位を、凹状陥没部６９に代わるフランジ係合部６９Ｂとする。そして、この実施例では、向かい合う突出片６６Ｂを、既述したリング部６２Ａの突出片６６Ａと同様、第４接続孔２６ｄの一方端側（図１０における紙面手前側）にオフセットして形成した。 As shown in FIG. 10, the housing 20B includes a protruding piece 66B on the back wall of the fourth connection hole 26d. The protruding piece 66B extends to the front end side in the pipe axis direction in the fourth connection hole 26d while being bent, and is bent outward. The protruding piece 66B has a bent portion at the tip thereof as an interference portion 68B instead of the interference portion 68 in the protruding piece 66 described above, and the protruding piece base side portion on the connection wall inner wall side from the interference portion is recessed. A flange engaging portion 69B is used instead of the portion 69. In this embodiment, the projecting pieces 66B facing each other are formed offset to one end side (the front side in FIG. 10) of the fourth connection hole 26d, like the projecting pieces 66A of the ring portion 62A described above.

図１０に示すコネクタ１０Ｂにあっても、突出片６６Ｂを第４接続孔２６ｄ内に位置させて対向させると共に、突出片６６Ｂを、第４接続孔２６ｄの内部で当該接続孔の軸心に沿って延び、接続孔の径方向に拡張可能な弾発片とする。そして、この突出片６６Ｂは、その干渉部６８Ｂを、図１０（Ａ）に示すように、リテーナ４０の干渉係合端４４ｂに干渉させて、リテーナ４０の装着完了を妨げる。よって、配管Ｐの挿入未了の状態では、リテーナ４０は、突出片６６Ｂの干渉部６８Ｂと干渉係合端４４ｂとの干渉により、既述したように半装着の状態に保持される。なお、この図１０にあっても干渉係合端４４ｂはフランジ部Ｐａと干渉して図示されているが、既述したように、突出片６６Ｂは図８の突出片６６Ａと同様にオフセットされているので、リテーナの半装着の状態では、干渉係合端４４ｂはフランジ部Ｐａと干渉することはない。リテーナ装着完了の際には、干渉係合端４４ｂは、既述した実施例の場合と同様に配管Ｐの側に下がるので、フランジ部Ｐａと干渉することになる。 Even in the connector 10B shown in FIG. 10, the projecting piece 66B is positioned in the fourth connection hole 26d so as to face each other, and the projecting piece 66B is disposed inside the fourth connection hole 26d along the axis of the connection hole. The projecting piece extends and extends in the radial direction of the connection hole. And this protrusion piece 66B makes the interference part 68B interfere with the interference engagement end 44b of the retainer 40, as shown in FIG. Therefore, in the state where the insertion of the pipe P has not been completed, the retainer 40 is held in the half-mounted state as described above due to the interference between the interference portion 68B of the protruding piece 66B and the interference engagement end 44b. In FIG. 10, the interference engagement end 44b is shown to interfere with the flange portion Pa. However, as described above, the protruding piece 66B is offset in the same manner as the protruding piece 66A of FIG. Therefore, the interference engagement end 44b does not interfere with the flange portion Pa when the retainer is half-mounted. When the retainer is completely attached, the interference engagement end 44b is lowered to the pipe P side as in the case of the above-described embodiment, and thus interferes with the flange portion Pa.

図１０（Ａ）に示すように、配管Ｐは、配管挿入に伴って、フランジ部Ｐａの端面を干渉部６８Ｂに押し当てる。更に配管Ｐの挿入を進めると、突出片６６Ｂは、フランジ部Ｐａにより配管径方向に拡張されて撓み（図１０（Ｂ））、フランジ部Ｐａが半装着状態のリテーナ４０の左右係合腕４４や中央係合腕４６を超えてストッパリング６０Ａの端面に達すると、フランジ部Ｐａは、フランジ外周縁において突出片６６より奥側のフランジ係合部６９Ｂと係合する（図１０（Ｃ））。こうなると、図１０（Ｃ）に示すように、配管挿入前まで干渉係合端４４ｂに干渉していた干渉部６８Ｂは、もはや干渉係合端４４ｂと干渉しないようになるので、半装着のリテーナ４０を既述したように速やかに装着できる。 As shown in FIG. 10A, the piping P presses the end surface of the flange portion Pa against the interference portion 68B as the piping is inserted. When the insertion of the pipe P is further advanced, the projecting piece 66B is expanded and bent in the pipe radial direction by the flange portion Pa (FIG. 10B), and the left and right engaging arms 44 of the retainer 40 in the flange portion Pa being semi-mounted. When the end portion of the stopper ring 60A is reached beyond the center engaging arm 46, the flange portion Pa engages with the flange engaging portion 69B on the back side of the protruding piece 66 at the outer peripheral edge of the flange (FIG. 10C). . In this case, as shown in FIG. 10C, the interference portion 68B that has interfered with the interference engagement end 44b before the pipe is inserted no longer interferes with the interference engagement end 44b. 40 can be quickly installed as described above.

従って、図１０に示す形態のコネクタ１０Ｂによっても、配管Ｐの挿入に伴って、フランジ部Ｐａにより突出片６６Ｂを配管径方向に一旦拡張して撓ませた後に、この突出片６６Ｂを配管中心方向に弾発復帰させて、フランジ係合部６９Ｂをフランジ部Ｐａに係合させる。この結果、この実施例のコネクタ１０Ｂによっても、突出片６６Ｂの弾発復帰とその際のフランジ部Ｐａへのフランジ係合部６９Ｂの係合とにより、作業者に挿入完了の状態を認知する節度感を付与できるので、既述した効果を奏することができる。なお、この実施例では、図１０（Ｃ）に示す配管接続状態において、突出片６６Ｂは配管軸芯方向でフランジ部Ｐａより前端側に延びており、配管挿入前にこの突出片６６Ｂの干渉部６８Ｂに干渉係合端４４ｂを干渉させる左右係合腕４４もフランジ部Ｐａより前端側に位置する。よって、左右係合腕４４の形状については、干渉係合端４４ｂを配管挿入前では突出片６６Ｂの干渉部６８Ｂに干渉させつつ、図１０（Ｃ）に示す配管接続状態では、弾発復帰した突出片６６Ｂとの干渉を避けて左右係合腕４４が配管Ｐの側に進むよう、左右係合腕４４の幅方向の形状を適宜変更すればよい。 Accordingly, even with the connector 10B having the configuration shown in FIG. 10, the protruding piece 66B is temporarily expanded and bent in the pipe radial direction by the flange portion Pa along with the insertion of the pipe P, and then the protruding piece 66B is moved in the pipe center direction. Then, the flange engaging portion 69B is engaged with the flange portion Pa. As a result, even with the connector 10B of this embodiment, the moderation of recognizing the insertion completion state to the operator by the elastic return of the protruding piece 66B and the engagement of the flange engaging portion 69B with the flange portion Pa at that time. Since a feeling can be imparted, the effects described above can be achieved. In this embodiment, in the pipe connection state shown in FIG. 10 (C), the protruding piece 66B extends to the front end side from the flange portion Pa in the pipe axis direction, and before the pipe is inserted, the interference portion of the protruding piece 66B. The left and right engagement arms 44 that cause the interference engagement end 44b to interfere with 68B are also located on the front end side from the flange portion Pa. Therefore, with respect to the shape of the left and right engagement arms 44, the interference engagement end 44b is made to interfere with the interference portion 68B of the protruding piece 66B before the pipe is inserted, and in the pipe connection state shown in FIG. What is necessary is just to change suitably the shape of the width direction of the left-right engaging arm 44 so that interference with the protrusion piece 66B may advance the left-right engaging arm 44 to the piping P side.

以上、本発明の実施例について説明したが、この発明は上記実施例に限られるものではなく、その要旨を逸脱しない範囲において種々の態様において実施することが可能である。例えば、上記の実施例では、フランジ部Ｐａを配管全周に亘って備える配管Ｐについて説明したが、リテーナ４０の左右係合腕４４と中央係合腕４６との干渉を起こす範囲について、少なくともフランジ状とされた配管とすることもできる。 As mentioned above, although the Example of this invention was described, this invention is not limited to the said Example, In the range which does not deviate from the summary, it is possible to implement in various aspects. For example, in the above-described embodiment, the pipe P provided with the flange portion Pa over the entire circumference of the pipe has been described. However, at least the flange is set in a range where interference between the left and right engaging arms 44 and the central engaging arm 46 of the retainer 40 occurs. It can also be made into the shape of a pipe.

本発明の一実施例にかかるコネクタ１０を分解して示す斜視図である。It is a perspective view which decomposes | disassembles and shows the connector 10 concerning one Example of this invention. 配管Ｐの挿入未了状態でリテーナ４０を半装着した様子を示す説明図である。It is explanatory drawing which shows a mode that the retainer 40 was half mounted | worn with the piping P incomplete insertion state. 配管Ｐの挿入完了状態で配管Ｐとコネクタ１０とを配管軸線方向に沿って半断面視して示す説明図である。It is explanatory drawing which shows the piping P and the connector 10 by a half cross-sectional view along the piping axis direction in the insertion completion state of piping P. FIG. ハウジング２０の案内溝２８の下端部周辺を断面視して示す説明図である。4 is an explanatory view showing a periphery of a lower end portion of a guide groove 28 of the housing 20 in a cross-sectional view. FIG. リテーナ４０を正面視して示す説明図である。It is explanatory drawing which shows the retainer 40 in front view. 突出片６６により半装着の状態とされたリテーナ４０と配管Ｐとの位置関係を示す説明図である。It is explanatory drawing which shows the positional relationship of the retainer 40 made into the semi-attached state by the protrusion piece 66, and the piping P. FIG. 配管Ｐの挿入に伴う突出片６６の挙動を示す説明図である。It is explanatory drawing which shows the behavior of the protrusion piece 66 accompanying the insertion of the piping P. FIG. 他の実施例のコネクタ１０Ａにおける突出片６６Ａと一体のリング部６２Ａとを概略的に示す斜視図である。It is a perspective view which shows roughly the protrusion piece 66A and the ring part 62A integral with the connector 10A of another Example. 図７相当図でありコネクタ１０Ａにおける突出片６６Ａの挙動を示す説明図である。FIG. 8 is an explanatory view showing the behavior of a protruding piece 66A in the connector 10A, corresponding to FIG. 図９相当図でありコネクタ１０Ｂに突出片６６Ｂの挙動を示す説明図である。FIG. 10 is an explanatory diagram showing the behavior of the protruding piece 66B on the connector 10B, corresponding to FIG.

符号の説明Explanation of symbols

１０、１０Ａ、１０Ｂ...コネクタ
２０、２０Ａ、２０Ｂ...ハウジング
２２...装着筐体
２４...チューブ接続部
２６ａ...第１接続孔
２６ｂ...第２接続孔
２６ｃ...第３接続孔
２６ｄ...第４接続孔
２７...環状凹所
２８...案内溝
２８ｂ...係合凹所
２９...リテーナ装着溝
３０...リテーナ装着孔
３５...環状凹所
４０...リテーナ
４１...リテーナ操作部
４２...係合腕
４３...リテーナ係合爪
４４...左右係合腕
４４ｂ...干渉係合端
４６...中央係合腕
４８...円弧周縁
４９...円弧周縁
５６...シール部材
６０、６０Ａ...ストッパリング
６２、６２Ａ...リング部
６４...環状凸部
６６、６６Ａ、６６Ｂ...突出片
６７...溝
６８、６８Ａ、６８Ｂ...干渉部
６９...凹状陥没部
６９Ａ、６９Ｂ...フランジ係合部
Ｐ...配管
Ｐａ...フランジ部
Ｐｂ...接続部
Ｔｂ...チューブ 10, 10A, 10B ... Connector 20, 20A, 20B ... Housing 22 ... Mounting housing 24 ... Tube connection part 26a ... First connection hole 26b ... Second connection hole 26c. .. 3rd connection hole 26d ... 4th connection hole 27 ... annular recess 28 ... guide groove 28b ... engagement recess 29 ... retainer mounting groove 30 ... retainer mounting hole 35 ... annular recess 40 ... retainer 41 ... retainer operation part 42 ... engaging arm 43 ... retainer engaging claw 44 ... left and right engaging arm 44b ... interference engaging end 46 ... Center engaging arm 48 ... Arc peripheral edge 49 ... Arc peripheral edge 56 ... Seal member 60, 60A ... Stopper ring 62, 62A ... Ring part 64 ... Annular convex part 66, 66A, 66B ... Projecting piece 67 ... Groove 68, 68A, 68B ... Interference part 69 ... Recessed recessed part 69A, 69B ... Flange engaging part P ... Piping Pa ... Flange Part Pb ... Connection part Tb ... Over Breakfast

Claims

外周に環状突起を有する配管の接続に用いられるコネクタであって、
前記配管が挿入されて前記環状突起を取り囲む挿入孔を有するハウジングと、
前記挿入孔の軸心と交差する交差方向から前記ハウジングに装着され、前記交差方向から前記挿入孔に入り込むようにして備えた係合部を、前記挿入孔の内部で前記環状突起に干渉させて前記配管の抜止を図るリテーナと、
前記挿入孔に配設され、前記挿入孔への配管の挿入未了の状態では、前記リテーナの前記係合部と干渉して前記リテーナの装着完了を妨げて前記リテーナを半装着状態に保持する半装着保持部とを備え、
該半装着保持部は、
前記挿入孔の内部で前記軸心に沿って延びた板状の弾発片とされ、前記配管の挿入に伴って前記環状突起により第１退避位置まで配管径方向に拡張して撓み、前記環状突起が前記リテーナの前記係合部を超えるまで前記配管の挿入が進むと、前記リテーナの前記係合部と干渉しない第２退避位置まで前記第１退避位置から弾発して戻って前記環状突起と係合する
コネクタ。 A connector used for connecting a pipe having an annular protrusion on the outer periphery,
A housing having an insertion hole into which the pipe is inserted and surrounds the annular protrusion;
An engaging portion that is mounted on the housing from the crossing direction that intersects the axis of the insertion hole and enters the insertion hole from the crossing direction is caused to interfere with the annular protrusion inside the insertion hole. A retainer for preventing the piping from being removed;
When the pipe is not inserted into the insertion hole, the retainer is held in a semi-mounted state by interfering with the engaging portion of the retainer and preventing the mounting of the retainer. A semi-attachment holding part,
The semi-attached holding part is
It is a plate-like elastic piece extending along the axis inside the insertion hole, and as the pipe is inserted, the ring-shaped protrusion extends to the first retraction position in the radial direction of the pipe and bends. When the insertion of the pipe proceeds until the protrusion exceeds the engaging portion of the retainer, the annular protrusion protrudes from the first retracted position to a second retracted position that does not interfere with the engaging portion of the retainer. Engaging connector.

前記半装着保持部は、前記挿入孔の開口側に前記リテーナの前記係合部と干渉する干渉部位を備え、該干渉部位より前記挿入孔の奥側の部位を、前記第１退避位置から前記第２退避位置に弾発して戻る際に、前記環状突起に係合する係合部位とする請求項１に記載のコネクタ。 The semi-mounting holding part includes an interference part that interferes with the engaging part of the retainer on the opening side of the insertion hole, and a part on the back side of the insertion hole from the interference part from the first retracted position. The connector according to claim 1, wherein the connector is an engagement portion that engages with the annular protrusion when returning to the second retracted position.

前記半装着保持部は、前記係合部位を前記環状突起が入り込む凹形状としている請求項１または請求項２に記載のコネクタ。 The connector according to claim 1, wherein the half-mounting holding portion has a concave shape in which the annular protrusion enters the engagement portion.

請求項１ないし請求項３いずれかに記載のコネクタであって、
前記挿入孔に配設して固定される環状体を備え、
前記半装着保持部を前記環状体の端面に一体に形成して備える
コネクタ。 The connector according to any one of claims 1 to 3,
An annular body disposed and fixed in the insertion hole;
A connector provided with the semi-attached holding part formed integrally with an end face of the annular body.

請求項４に記載のコネクタであって、
前記挿入孔に配設され、前記挿入された前記配管の先端側の管路部の外周をシールするシール部材を備え、
前記環状体により、前記シール部材を前記挿入孔の配設箇所に保持する
コネクタ。 The connector according to claim 4,
A seal member that is disposed in the insertion hole and seals an outer periphery of a pipe portion on a distal end side of the inserted pipe;
A connector for holding the seal member at a place where the insertion hole is provided by the annular body.

前記半装着保持部は、前記ハウジングと一体に形成されている請求項１ないし請求項３いずれかに記載のコネクタ。 The connector according to any one of claims 1 to 3, wherein the half mounting holding portion is formed integrally with the housing.