JP7341692B2 - Female piping joint, piping joint and annular cover - Google Patents

Female piping joint, piping joint and annular cover Download PDF

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JP7341692B2
JP7341692B2 JP2019057923A JP2019057923A JP7341692B2 JP 7341692 B2 JP7341692 B2 JP 7341692B2 JP 2019057923 A JP2019057923 A JP 2019057923A JP 2019057923 A JP2019057923 A JP 2019057923A JP 7341692 B2 JP7341692 B2 JP 7341692B2
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piping joint
clip
annular cover
male
piping
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JP2020159412A (en
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光弘 鷲野
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INOAC Housing and Construction Materials Co Ltd
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INOAC Housing and Construction Materials Co Ltd
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Description

本発明は、配管の端部に固定されて、相手側配管の雄側配管継手に結合される雌側配管継手と、それら雌側配管継手と雄側配管継手（以下、適宜「雌雄の配管継手」という）を備えてなる配管継手と、配管継手に使用される環状カバーとに関する。 The present invention relates to a female piping joint that is fixed to the end of a piping and connected to a male piping joint of a mating piping, and a female piping joint and a male piping joint (hereinafter referred to as "male and male piping joints" as appropriate). ”) and an annular cover used for the pipe joint.

従来の配管継手として、雄側配管継手の外側に雌側配管継手が嵌合されると、雄側配管継手の外周溝に雌側配管継手の連通孔が対向し、雌側配管継手の外側に装着されるクリップが連通孔を通して外周溝に係合することで雌雄の配管継手が抜け止めされたロック状態になるものが知られている（特許文献１参照）。 As a conventional piping joint, when the female piping joint is fitted on the outside of the male piping joint, the communication hole of the female piping joint faces the outer circumferential groove of the male piping joint. There is known a device in which the female and male piping joints are brought into a locked state in which the male and female piping joints are prevented from coming off by engaging the attached clip with the outer circumferential groove through the communication hole (see Patent Document 1).

特開２０１１－１０６６０４号公報（段落［００２９］、図３，図４）JP 2011-106604 (Paragraph [0029], Figures 3 and 4)

しかしながら、上記した従来の配管継手では、前記ロック状態と、雌雄の配管継手が抜け止めされずに半嵌合しているアンロック状態との外観が似ているために、配管継手がロック状態か否かの確認作業が困難であり、その対策が求められている。 However, in the conventional piping joints described above, the appearance of the locked state is similar to the unlocked state in which the male and female piping joints are not prevented from coming out and are semi-fitted, so the piping joints may not be in the locked state. It is difficult to confirm whether or not this is the case, and countermeasures are required.

上記課題を解決するためになされた発明の第１態様は、配管の端部に固定されて、相手側配管の雄側配管継手に結合される雌側配管継手において、前記雄側配管継手の嵌合管部の外側に嵌合される嵌合筒部と、前記嵌合筒部に形成されて、前記嵌合筒部が前記嵌合管部の正規嵌合位置まで嵌合されると前記嵌合管部の外周溝に対向する連通孔と、前記嵌合筒部の外側に装着され、前記連通孔を通して前記外周溝に係合するクリップと、前記嵌合筒部が前記正規嵌合位置に配置されていることを条件に、前記雄側配管継手の外側面に重なった状態で前記雄側配管継手の被係合部に係合する係合アームと、を備える雌側配管継手である。 A first aspect of the invention made to solve the above problems is a female piping joint that is fixed to an end of a piping and coupled to a male piping joint of a mating piping, in which the male piping joint is fitted. A fitting tube portion is formed on the fitting tube portion to be fitted on the outside of the fitting tube portion, and when the fitting tube portion is fitted to the normal fitting position of the fitting tube portion, the fitting tube portion is fitted to the fitting tube portion. a communication hole facing the outer circumferential groove of the mating tube portion; a clip attached to the outside of the fitting tube portion and engaging the outer circumferential groove through the communication hole; and the fitting tube portion being in the normal fitting position. and an engagement arm that engages with the engaged portion of the male piping joint while overlapping the outer surface of the male piping joint.

発明の第２態様は、前記嵌合筒部の外側に嵌合され、前記嵌合管部の先端側に向かってスライドして正規スライド位置に至ったところで位置決めされると共に前記クリップの外側に嵌合し、前記クリップの外側への変形を規制する環状カバーを備え、前記係合アームは、前記環状カバーに設けられて、前記環状カバーが前記正規スライド位置に配置されていることを条件に前記被係合部に係合する第１態様に記載の雌側配管継手である。 A second aspect of the invention is that the clip is fitted on the outside of the fitting tube, and is positioned when it slides toward the distal end side of the fitting tube and reaches a normal sliding position, and is fitted on the outside of the clip. and an annular cover for restricting outward deformation of the clip, and the engagement arm is provided on the annular cover, and the engagement arm is provided with the annular cover in the normal sliding position. The female side piping joint according to the first aspect engages with the engaged portion.

発明の第３態様は、前記環状カバーには、前記正規スライド位置に配置されたときに前記クリップの一部に重なる目視確認用孔を備える第２態様の記載の雌側配管継手である。 A third aspect of the invention is the female piping joint according to the second aspect , wherein the annular cover has a hole for visual confirmation that overlaps a part of the clip when the annular cover is placed in the normal sliding position.

発明の第４態様は、前記環状カバーを前記正規スライド位置に位置決めするストッパが前記クリップに設けられている第２態様又は第３態様に記載の雌側配管継手である。 A fourth aspect of the invention is the female piping joint according to the second aspect or the third aspect, wherein the clip is provided with a stopper that positions the annular cover at the normal sliding position.

発明の第５態様は、前記係合アームは、前記クリップに設けられている第１態様に記載の雌側配管継手である。 A fifth aspect of the invention is the female piping joint according to the first aspect , wherein the engagement arm is provided on the clip.

発明の第６態様は、前記係合アームを回動可能に支持し、前記被係合部に係合していない前記係合アームを前記雄側配管継手の外側面から離れた姿勢に保持する弾性ヒンジ部を備える第１態様乃至第５態様の何れか１の態様に記載の雌側配管継手である。 In a sixth aspect of the invention , the engagement arm is rotatably supported, and the engagement arm that is not engaged with the engaged portion is held in a position apart from the outer surface of the male piping joint. The female side piping joint according to any one of the first to fifth aspects includes an elastic hinge portion.

発明の第７態様は、前記雌側配管継手から側方に延びる帯状板部と、前記帯状板部の長手方向の途中位置を横切る溝部とが備えられ、前記溝部より前記帯状板部の先端側が前記係合アームをなし、前記帯状板部のうち前記溝部の底の薄肉部が前記弾性ヒンジ部をなしている第６態様に記載の雌側配管継手である。 A seventh aspect of the invention is provided with a band-shaped plate portion extending laterally from the female side piping joint, and a groove portion that crosses an intermediate position in the longitudinal direction of the band-shaped plate portion, and the tip side of the band-shaped plate portion is closer to the groove portion than the groove portion. The female piping joint according to the sixth aspect , wherein a thin wall portion of the bottom of the groove of the band-shaped plate portion, which forms the engagement arm, forms the elastic hinge portion.

発明の第８態様は、第１態様乃至第７態様の何れか１の態様に記載の雌側配管継手と、その雌側配管継手が結合する前記雄側配管継手と、を備えてなる配管継手である。 An eighth aspect of the invention is a piping joint comprising the female piping joint according to any one of the first to seventh aspects , and the male piping joint to which the female piping joint is coupled. It is.

発明の第９態様は、前記雄側配管継手には、外側を断熱材で被覆された前記相手側配管としてのドレンホースの内側に挿入される挿入管部と、前記ドレンホースの外側に嵌合されるフード部とが備えられ、前記係合アームは、前記フード部の先端部の全周任意の位置に係合される第８態様に記載の配管継手である。 A ninth aspect of the invention is that the male piping joint includes an insertion pipe portion that is inserted inside the drain hose serving as the mating piping whose outside is covered with a heat insulating material, and that is fitted on the outside of the drain hose. The piping joint according to the eighth aspect , further comprising: a hood portion, wherein the engagement arm is engaged at any position on the entire circumference of the distal end portion of the hood portion.

発明の第１０態様は、前記係合アームには、前記フード部の先端部の内側に入り込んで係合するフック部が備えられている第９態様に記載の配管継手である。 A tenth aspect of the invention is the piping joint according to the ninth aspect , wherein the engagement arm is provided with a hook portion that enters inside and engages the tip of the hood portion.

発明の第１１態様は、前記係合アームの色と前記雄側配管継手の外側面の色とが異なる第８態様乃至第１０態様の何れか１の態様に記載の配管継手である。 An eleventh aspect of the invention is the piping joint according to any one of the eighth to tenth aspects , wherein the color of the engagement arm and the color of the outer surface of the male piping joint are different.

発明の第１２態様は、雌側配管継手の嵌合筒部が、雄側配管継手の嵌合管部の外側の正規嵌合位置まで嵌合されると、前記嵌合筒部の連通孔が前記嵌合管部の外周溝に対向し、前記嵌合筒部の外側に装着されるクリップが前記連通孔を通して前記外周溝に係合する配管継手用の環状カバーであって、前記嵌合筒部の外側に嵌合され、前記嵌合筒部の先端側に向かってスライドして正規スライド位置に至ったところで位置決めされて前記クリップの外側に嵌合するように形成されると共に係合アームを一体に備え、前記嵌合筒部が前記正規嵌合位置に配置されかつ前記環状カバーが前記正規スライド位置に配置されていることを条件に、前記係合アームが前記雄側配管継手の外側面に重なった状態で前記雄側配管継手の被係合部に係合する環状カバーである。 A twelfth aspect of the invention is that when the fitting cylindrical portion of the female side piping joint is fitted to a normal fitting position on the outside of the fitting pipe portion of the male side piping joint, the communication hole of the fitting cylindrical portion is fitted. An annular cover for a piping joint in which a clip facing the outer circumferential groove of the fitting tube portion and attached to the outside of the fitting tube portion engages with the outer circumferential groove through the communication hole, The clip is fitted on the outside of the clip, and is slid toward the distal end of the fitting cylindrical part, and is positioned when it reaches a normal sliding position, and is formed to fit on the outside of the clip, and also has an engaging arm. provided that the fitting cylinder portion is placed in the normal fitting position and the annular cover is placed in the normal sliding position, the engaging arm is attached to the outer surface of the male piping joint. an annular cover that engages with the engaged portion of the male piping joint in an overlapping state.

第１態様及び第８態様の構造によれば、雌側配管継手の嵌合筒部が雄側配管継手の嵌合管部の正規嵌合位置まで嵌合されると嵌合管部の外周溝に嵌合筒部の連通孔が対向し、嵌合筒部の外側のクリップが連通孔を通して外周溝に係合して、雌雄の配管継手が抜け止めされたロック状態になる。また、雌側配管継手には、嵌合筒部が正規嵌合位置に配置されていることを条件に、雄側配管継手の被係合部に係合する係合アームが備えられている。これにより、係合アームが被係合部に係合しているか否かの確認を以て、雌雄の配管継手がロック状態か否かを確認することができる。また、係合アームは、雄側配管継手の外側面に重なった状態で被係合部に係合するので、係合アームが被係合部に係合しているか否かの相違は、係合アームが雄側配管継手の外側面に重なっているか否かの相違又は、それらの重なり量の相違として明確にあらわれ、雌雄の配管継手がロック状態か否かを従来より容易に確認することができる。 According to the structure of the first aspect and the eighth aspect , when the fitting cylinder part of the female side piping joint is fitted to the normal fitting position of the fitting pipe part of the male side piping joint, the outer circumferential groove of the fitting pipe part The communication holes of the fitting cylinder portion face each other, and the clip on the outside of the fitting cylinder portion engages with the outer circumferential groove through the communication hole, so that the male and female pipe joints are in a locked state in which they are prevented from coming off. Further, the female pipe joint is provided with an engagement arm that engages with the engaged portion of the male pipe joint on the condition that the fitting cylinder portion is placed in the normal fitting position. Thereby, by checking whether the engaging arm is engaged with the engaged portion, it is possible to check whether the male and female piping joints are in the locked state. In addition, since the engagement arm engages with the engaged part while overlapping the outer surface of the male piping joint, the difference in whether or not the engagement arm engages with the engaged part is This clearly appears as a difference in whether or not the mating arm overlaps the outer surface of the male piping joint, or a difference in the amount of overlap between them, making it easier to confirm whether the male and female piping joints are locked than before. can.

第２態様の構成では、雌側配管継手の嵌合筒部に嵌合された環状カバーが、嵌合筒部の先端側に向かってスライドして正規スライド位置に至ったところで位置決めされると共にクリップの外側に嵌合して前述のロック状態が強化される。そして、係合アームは、環状カバーが正規スライド位置に配置されていることを条件に被係合部に係合するので、係合アームが被係合部に係合しているか否かの確認を以て、ロック状態であるか否かの確認と、そのロック状態が強化されているか否かの確認との両方を一度に容易に行うことができる。 In the configuration of the second aspect , the annular cover fitted to the fitting cylinder part of the female side piping joint slides toward the distal end side of the fitting cylinder part, and when it reaches the normal sliding position, it is positioned and clipped. The above-mentioned locking condition is strengthened by fitting on the outside of the holder. Since the engagement arm engages with the engaged part on the condition that the annular cover is placed at the normal sliding position, it is possible to check whether the engagement arm is engaged with the engaged part or not. With this, it is possible to easily confirm both whether or not the lock is in the locked state and whether or not the locked state is strengthened at the same time.

なお、第１２態様の環状カバーを、環状カバーを有しない雌側配管継手に装着するか、係合アームを有しない環状カバーと交換して第１２態様の環状カバーを雌側配管継手に装着すれば、第２態様の構成と同様の効果を奏する。 Note that the annular cover of the twelfth aspect can be attached to a female piping joint that does not have an annular cover, or the annular cover of the twelfth aspect can be attached to a female piping joint by replacing the annular cover that does not have an engagement arm. For example, the same effect as the configuration of the second aspect can be achieved.

第３態様の構成では、環状カバーの目視確認用孔の内部又はその奥側に、クリップの一部が視認されるか否かを以て、環状カバーの内側にクリップがあるか否かを容易に確認することができる。 In the configuration of the third aspect , it is possible to easily confirm whether or not there is a clip inside the annular cover by checking whether a part of the clip is visible inside the visual confirmation hole of the annular cover or on the back side thereof. can do.

第４態様の構成は、環状カバーを正規スライド位置に位置決めするストッパがクリップに設けられているので、クリップが嵌合筒部から離脱していると、環状カバーが正規スライド位置に位置決めされず、クリップの離脱を気付かせることができる。 In the configuration of the fourth aspect , since the clip is provided with a stopper that positions the annular cover at the normal sliding position, if the clip is detached from the fitting cylinder part, the annular cover will not be positioned at the normal sliding position. It is possible to notice that the clip is detached.

なお、係合アームは、クリップに設けられていてもよい（第５態様）。その場合、環状カバーを備えていてもいなくてもよい。また、雌側配管継手のうちクリップ及び環状カバー以外の部位に係合アームを備えてもよい。さらには、係合アームを雄側配管継手に設けて、「嵌合筒部が正規嵌合位置に配置されていることを条件に、雌側配管継手の外側面に重なった状態で雌側配管継手の被係合部に係合する」構成とすることも考えられる。 Note that the engagement arm may be provided on the clip ( fifth aspect ). In that case, the annular cover may or may not be provided. Furthermore, an engagement arm may be provided at a portion of the female piping joint other than the clip and the annular cover. Furthermore, an engagement arm is provided on the male side piping joint, and the female side piping is placed in a position overlapping the outer surface of the female side piping joint, provided that the mating cylinder part is placed in the normal mating position. It is also conceivable to have a configuration in which the joint is engaged with the engaged portion of the joint.

第６態様の構成では、係合アームが被係合部に係合していないと雄側配管継手の外側面から離れた姿勢になるので、係合アームの姿勢に基づいて、雌雄の配管継手がロック状態か否かを容易かつ明確に判別することができる。 In the configuration of the sixth aspect , if the engagement arm is not engaged with the engaged portion, it will be in a posture away from the outer surface of the male side piping joint, so based on the posture of the engagement arm, the male and female piping joints It is possible to easily and clearly determine whether the is in the locked state or not.

第７態様の構成によれば、係合アームを備えた雌側配管継手を容易に製造することができる。 According to the configuration of the seventh aspect , it is possible to easily manufacture the female side piping joint provided with the engagement arm.

第９態様の配管継手を使用すれば、暗所や狭い場所に配置されることが多いドレンホースの配管継手の結合確認作業を容易に行うことができる。 By using the piping joint of the ninth aspect , it is possible to easily check the connection of the piping joint of a drain hose, which is often placed in a dark or narrow place.

第１０態様の構成では、係合アームのフック部が、フード部の先端部の内側に入り込んで係合するので係合状態が安定する。 In the configuration of the tenth aspect , the hook part of the engagement arm enters inside the tip of the hood part and engages with it, so that the engaged state is stabilized.

第１１態様の構成では、係合アームの色と雄側配管継手の外側面の色とが異なるので、係合アームが被係合部に係合しているか否かが明確になる。 In the configuration of the eleventh aspect , since the color of the engagement arm and the color of the outer surface of the male piping joint are different, it becomes clear whether or not the engagement arm is engaged with the engaged portion.

第１実施形態のドレン配管の概略構成図Schematic configuration diagram of drain piping of the first embodiment 配管継手の側断面図Side sectional view of piping joint 雄側配管継手の斜視図Perspective view of male side piping joint 雌側配管継手の一部の斜視図Partial perspective view of the female piping joint 嵌合筒部の斜視図Perspective view of fitting cylinder part クリップの斜視図Perspective view of clip 雌側配管継手のクリップを有する部分の平断面図Planar sectional view of the part with the clip of the female side piping joint 環状カバーの一部破断の斜視図Perspective view of partially broken annular cover （Ａ）環状カバーが正規スライド位置の手前に位置する配管継手の正面図、（Ｂ）環状カバーが正規スライド位置に位置する配管継手の正面図(A) Front view of the piping joint with the annular cover located in front of the normal sliding position, (B) Front view of the piping joint with the annular cover located in the normal sliding position ロック状態の配管継手の平断面図Planar sectional view of piping joint in locked state 環状カバーが正規スライド位置に配置されている配管継手の側断面図Side sectional view of a pipe fitting with the annular cover in its normal sliding position （Ａ）環状カバーが正規スライド位置に位置する配管継手の部分側断面図，（Ｂ）環状カバーが正規スライド位置の手前に位置する配管継手の部分側断面図(A) Partial side sectional view of the piping joint with the annular cover located in the normal sliding position, (B) Partial side sectional view of the piping joint with the annular cover located in front of the normal sliding position 第２実施形態の配管継手の側断面図Side sectional view of the piping joint of the second embodiment 第３実施形態の雌側配管継手の斜視図A perspective view of the female side piping joint of the third embodiment 配管継手の側断面図Side sectional view of piping joint 第４実施形態の配管継手の側断面図Side sectional view of the piping joint of the fourth embodiment 第５実施形態の雌側配管継手の斜視図A perspective view of the female side piping joint of the fifth embodiment 嵌合筒部の斜視図Perspective view of fitting cylinder part クリップの斜視図Perspective view of clip 配管継手の側断面図Side sectional view of piping joint クリップが閉環状態のときの雌側配管継手の平断面図Planar sectional view of the female piping joint when the clip is in the closed ring state クリップが開環状態のときの雌側配管継手の（Ａ）平断面図、（Ｂ）正面図(A) Planar sectional view, (B) Front view of the female piping joint when the clip is in the open state. 配管継手の正断面図Front sectional view of piping joint 第６実施形態に係る配管継手の正面図Front view of the piping joint according to the sixth embodiment 変形例に係る係合アームの先端部分の側断面図Side sectional view of the tip portion of the engagement arm according to a modification 変形例に係る係合アームの先端部分の側断面図Side sectional view of the tip portion of the engagement arm according to a modification 変形例に係る配管継手の平断面図Plane sectional view of a piping joint according to a modified example

［第１実施形態］
以下、図１～図１２を参照して第１実施形態の配管継手１００について説明する。図１には、例えば、天井裏に配置される空調機１１０のドレン管１１０Ａが、建造物のドレン設備管１１１にドレンホース１２０を介して接続されている状態が示されている。 [First embodiment]
The piping joint 100 of the first embodiment will be described below with reference to FIGS. 1 to 12. FIG. 1 shows a state in which, for example, a drain pipe 110A of an air conditioner 110 arranged in the ceiling is connected to a drain equipment pipe 111 of a building via a drain hose 120.

図２に示すように、ドレンホース１２０は、ホース部１２１の外側が断熱材１２２で被覆された２層構造になっている。そのドレンホース１２０の両端部に、本実施形態の配管継手１００を構成する雌側配管継手１０及び雄側配管継手５０のうちの例えば雄側配管継手５０が固定されている。そして、図１に示すように、ドレン管１１０Ａとドレン設備管１１１とにそれぞれ固定された雌側配管継手１０にドレンホース１２０の両端部の雄側配管継手５０が結合されることで、前述の如くドレン管１１０Ａがドレン設備管１１１に接続される。 As shown in FIG. 2, the drain hose 120 has a two-layer structure in which the outside of the hose portion 121 is covered with a heat insulating material 122. For example, the male side piping joint 50 of the female side piping joint 10 and the male side piping joint 50 that constitute the piping joint 100 of this embodiment is fixed to both ends of the drain hose 120. Then, as shown in FIG. 1, the male side piping joints 50 at both ends of the drain hose 120 are coupled to the female side piping joints 10 fixed to the drain pipe 110A and the drain equipment pipe 111, respectively. The drain pipe 110A is connected to the drain equipment pipe 111 as shown in FIG.

先ずは、雄側配管継手５０の具体的な構造について以下説明する。図３に示すように、雄側配管継手５０は、連結管５１の一部をフード部５０Ｆで覆った構造をなしている。フード部５０Ｆは、連結管５１の中間部から側方に張り出す円形のホース当接部５５の外縁部から円筒壁５６を一方に延ばしてなる。また、フード部５０Ｆの円筒壁５６は、ドレンホース１２０の外側に丁度嵌合する大きさになっている。 First, the specific structure of the male side piping joint 50 will be described below. As shown in FIG. 3, the male side piping joint 50 has a structure in which a part of the connecting pipe 51 is covered with a hood part 50F. The hood part 50F is formed by extending a cylindrical wall 56 in one direction from the outer edge of a circular hose contact part 55 that projects laterally from the middle part of the connecting pipe 51. Further, the cylindrical wall 56 of the hood portion 50F is sized to just fit on the outside of the drain hose 120.

連結管５１のうちホース当接部５５より一端側でフード部５０Ｆに包囲されている部分は、ドレンホース１２０の内側に挿入される挿入管部５１Ｘになっている。また、挿入管部５１Ｘの先端部はテーパー形状をなすと共にフード部５０Ｆより外側に突出している。そして、例えば、挿入管部５１Ｘの外周面と、ホース部１２１の内周面と、断熱材１２２の先端面とに予め接着剤が塗布された状態で、ホース当接部５５にドレンホース１２０の端面が当接する位置まで挿入管部５１Ｘがホース部１２１に挿入される。 A portion of the connecting pipe 51 that is surrounded by the hood part 50F on one end side from the hose contact part 55 is an insertion pipe part 51X that is inserted into the inside of the drain hose 120. Further, the distal end of the insertion tube portion 51X has a tapered shape and protrudes outward from the hood portion 50F. For example, the drain hose 120 is attached to the hose contact portion 55 with adhesive applied in advance to the outer circumferential surface of the insertion tube portion 51X, the inner circumferential surface of the hose portion 121, and the distal end surface of the heat insulating material 122. The insertion tube portion 51X is inserted into the hose portion 121 to a position where the end faces abut.

なお、雄側配管継手５０は、例えば、熱可塑性樹脂で形成され、軟質ポリ塩化ビニル樹脂や硬質ポリ塩化ビニル樹脂、ポリオレフィン系樹脂等で形成されている。雄側配管継手５０を形成する熱可塑性樹脂は、透明樹脂と不透明樹脂の何れであってもよい。また、ドレンホース１２０のホース部１２１は、例えば、熱可塑性樹脂で形成され、ポリオレフィン系樹脂や塩化ビニル樹脂等で形成されることが好ましい。断熱材１２２は、ポリオレフィン系樹脂等（例えば、ポリエチレン系樹脂、ポリプロピレン系樹脂）の熱可塑性樹脂の発泡体や発泡ゴム等で形成されることが好ましい。 The male piping joint 50 is made of, for example, a thermoplastic resin, such as a soft polyvinyl chloride resin, a hard polyvinyl chloride resin, or a polyolefin resin. The thermoplastic resin forming the male piping joint 50 may be either a transparent resin or an opaque resin. Further, the hose portion 121 of the drain hose 120 is made of, for example, a thermoplastic resin, preferably a polyolefin resin, a vinyl chloride resin, or the like. The heat insulating material 122 is preferably formed of a thermoplastic resin foam such as polyolefin resin (for example, polyethylene resin, polypropylene resin), foam rubber, or the like.

連結管５１のうちホース当接部５５を挟んで挿入管部５１Ｘの反対側は雌側配管継手１０と嵌合する嵌合管部５１Ｙになっている。図３に示すように、嵌合管部５１Ｙの外周面には、小径部５２と大径部５３が先端側から順に備えられ、小径部５２と大径部５３との段差部分にはテーパー部５３Ｔが形成されている。また、小径部５２の外周面には、１対のＯリング溝５２Ｍが形成され、そこに図示しないＯリングが装着される。さらに、大径部５３の外周面には、後述するクリップ３０が係合する外周溝５３Ｍが形成されている。その外周溝５３Ｍは、断面四角形の角溝構造になっている。 The side of the connecting pipe 51 opposite the insertion pipe part 51X with the hose contact part 55 in between is a fitting pipe part 51Y that fits into the female piping joint 10. As shown in FIG. 3, the outer circumferential surface of the fitting tube portion 51Y is provided with a small diameter portion 52 and a large diameter portion 53 in order from the tip side, and a tapered portion is provided at the step between the small diameter portion 52 and the large diameter portion 53. 53T is formed. Furthermore, a pair of O-ring grooves 52M are formed on the outer peripheral surface of the small diameter portion 52, and an O-ring (not shown) is mounted therein. Further, an outer circumferential groove 53M is formed on the outer circumferential surface of the large diameter portion 53, with which a clip 30, which will be described later, is engaged. The outer circumferential groove 53M has a square groove structure with a square cross section.

次に、雌側配管継手１０の具体的な構造について以下説明する。図２に示すように雌側配管継手１０は、管構造の継手本体部１１にクリップ３０と環状カバー４０とを組み付けてなる。それら継手本体部１１、クリップ３０及び環状カバー４０は、熱可塑性樹脂で形成されている。また、継手本体部１１とクリップ３０と環状カバー４０の色（無色透明も含む）は、互いに相違し、環状カバー４０の色は、雄側配管継手５０の色に対しても相違している。 Next, the specific structure of the female piping joint 10 will be described below. As shown in FIG. 2, the female piping joint 10 is formed by assembling a clip 30 and an annular cover 40 to a joint body 11 having a pipe structure. The joint body 11, the clip 30, and the annular cover 40 are made of thermoplastic resin. Further, the colors of the joint body 11, the clip 30, and the annular cover 40 (including colorless and transparent) are different from each other, and the color of the annular cover 40 is also different from the color of the male side piping joint 50.

なお、継手本体部１１は、軟質ポリ塩化ビニル樹脂や硬質ポリ塩化ビニル樹脂、ポリオレフィン系樹脂等によって形成されることが好ましい。クリップ３０は、ポリアセタール樹脂やナイロン６６等のポリアミド樹脂によって形成されることが好ましい。環状カバー４０は、ポリオレフィン系樹脂、ポリアミド樹脂等で形成されることが好ましい。また、継手本体部１１、クリップ３０、環状カバー４０を形成する熱可塑性樹脂は、透明樹脂と不透明樹脂の何れであってもよい。少なくとも継手本体部１１を透明な熱可塑性樹脂で形成すれば、継手本体部１１の内部を外側から目視確認でき、管内を流れるドレン水の状況を認識できる。継手本体部１１に加えて、雄側配管継手５０、クリップ３０、環状カバー４０を透明な熱可塑性樹脂で形成すれば、管内を流れるドレン水の状況を広範囲に亘って認識できる。 Note that the joint body portion 11 is preferably formed of a soft polyvinyl chloride resin, a hard polyvinyl chloride resin, a polyolefin resin, or the like. The clip 30 is preferably formed of polyamide resin such as polyacetal resin or nylon 66. The annular cover 40 is preferably made of polyolefin resin, polyamide resin, or the like. Further, the thermoplastic resin forming the joint main body 11, the clip 30, and the annular cover 40 may be either a transparent resin or an opaque resin. If at least the joint main body 11 is made of a transparent thermoplastic resin, the inside of the joint main body 11 can be visually checked from the outside, and the state of the drain water flowing inside the pipe can be recognized. If the male pipe joint 50, the clip 30, and the annular cover 40 are made of transparent thermoplastic resin in addition to the joint main body 11, the state of the drain water flowing in the pipe can be recognized over a wide range.

図２に示されるように、継手本体部１１は、Ｌ字状に湾曲したエルボ部１２の一端に配管固定部１３、他端に嵌合筒部１４を備えてなる。そして、配管固定部１３にドレン管１１０Ａ又はドレン設備管１１１（図１参照）が嵌合した状態に固定され、嵌合筒部１４が雄側配管継手５０の嵌合管部５１Ｙに外側から嵌合する。 As shown in FIG. 2, the joint body portion 11 includes a pipe fixing portion 13 at one end of an elbow portion 12 curved in an L-shape, and a fitting cylinder portion 14 at the other end. Then, the drain pipe 110A or the drain equipment pipe 111 (see FIG. 1) is fixed to the pipe fixing part 13 in a fitted state, and the fitting cylinder part 14 is fitted into the fitting pipe part 51Y of the male pipe joint 50 from the outside. match.

嵌合筒部１４は、軸方向の途中位置より先端側に大径部１４Ｋを備える一方、基端側に小径部１４Ｌを備え、大径部１４Ｋの内外径が共に小径部１４Ｌの内外径より段付き状に大きくなっている。また、嵌合筒部１４の内面における大径部１４Ｋと小径部１４Ｌとの間には、テーパー部１４Ｔが形成されている。そして、雄側配管継手５０の嵌合管部５１Ｙの外側に雌側配管継手１０の嵌合筒部１４が嵌合されると、嵌合管部５１Ｙのテーパー部５３Ｔと、嵌合筒部１４のテーパー部１４Ｔとが当接して、嵌合筒部１４が嵌合管部５１Ｙに対する正規嵌合位置に位置決めされる。 The fitting cylindrical portion 14 has a large diameter portion 14K on the distal side from an intermediate position in the axial direction, and a small diameter portion 14L on the proximal side, and both the inner and outer diameters of the large diameter portion 14K are larger than the inner and outer diameters of the small diameter portion 14L. It grows in steps. Further, a tapered portion 14T is formed between the large diameter portion 14K and the small diameter portion 14L on the inner surface of the fitting cylinder portion 14. Then, when the fitting cylinder part 14 of the female side pipe joint 10 is fitted to the outside of the fitting pipe part 51Y of the male side pipe joint 50, the tapered part 53T of the fitting pipe part 51Y and the fitting cylinder part 14 The fitting tube portion 14 is positioned at a normal fitting position with respect to the fitting tube portion 51Y.

図５に示すように、大径部１４Ｋの外周面には、平面視がＣ字状で角溝構造のクリップ収容溝１５が形成されている。また、クリップ収容溝１５の溝底壁１５Ｈには、嵌合筒部１４の内外に貫通する連通孔１６が形成されている。連通孔１６は、嵌合筒部１４の周方向に延び、前述した雄側配管継手５０の外周溝５３Ｍと略同一の溝幅を有する。また、連通孔１６は、クリップ収容溝１５の溝幅方向の一方側（嵌合筒部１４の先端側）に寄せて配置されている。そして、図１１に示すように、嵌合筒部１４が嵌合管部５１Ｙに対して前述した正規嵌合位置に配置されると、連通孔１６が雄側配管継手５０の外周溝５３Ｍに丁度対向する。なお、本実施形態では、連通孔１６は、嵌合筒部１４の径方向で対向するように１対備えられているが、径方向で対向する位置からずらして１対を備えられてもよいし、径方向で対向するように２対以上備えられてもよい。また、連通孔１６は、１つのみ又は３つ以上備えられてもよい。 As shown in FIG. 5, a clip accommodating groove 15 having a C-shape in plan view and a rectangular groove structure is formed on the outer circumferential surface of the large diameter portion 14K. Furthermore, a communication hole 16 is formed in the groove bottom wall 15H of the clip housing groove 15 so as to penetrate inside and outside of the fitting cylinder portion 14. The communication hole 16 extends in the circumferential direction of the fitting cylindrical portion 14 and has substantially the same groove width as the outer circumferential groove 53M of the male piping joint 50 described above. Further, the communication hole 16 is arranged closer to one side of the clip housing groove 15 in the groove width direction (the tip side of the fitting cylinder portion 14). Then, as shown in FIG. 11, when the fitting cylinder part 14 is placed in the normal fitting position described above with respect to the fitting pipe part 51Y, the communication hole 16 is exactly aligned with the outer circumferential groove 53M of the male side piping joint 50. opposite. Note that in this embodiment, one pair of communication holes 16 are provided so as to face each other in the radial direction of the fitting cylinder portion 14, but a pair may be provided that are shifted from positions facing each other in the radial direction. However, two or more pairs may be provided so as to face each other in the radial direction. Further, only one communication hole 16 or three or more communication holes 16 may be provided.

図６（Ａ）及び図６（Ｂ）に示されるように、クリップ３０は、Ｃ字状をなし、その両端部から側方に１対の突起３５が突出している。また、クリップ３０は、図６（Ａ）及び図６（Ｂ）に示される状態からクリップ３０の両端部間の開口３１Ａを広げるように弾性変形可能となっている。そして、クリップ３０は、図６（Ａ）及び図６（Ｂ）に示される閉状態と、該閉状態よりも開口３１Ａが広くなった開状態と、に変化する。閉状態のクリップ３０は、内径が嵌合筒部１４におけるクリップ収容溝１５の溝底壁１５Ｈの外径と略同じ大きさになる（図７参照）。 As shown in FIGS. 6(A) and 6(B), the clip 30 has a C-shape, and a pair of protrusions 35 protrude laterally from both ends thereof. Further, the clip 30 can be elastically deformed from the state shown in FIGS. 6(A) and 6(B) so as to widen the opening 31A between both ends of the clip 30. Then, the clip 30 changes into a closed state shown in FIGS. 6(A) and 6(B) and an open state in which the opening 31A is wider than the closed state. The clip 30 in the closed state has an inner diameter that is approximately the same size as the outer diameter of the groove bottom wall 15H of the clip housing groove 15 in the fitting cylinder portion 14 (see FIG. 7).

図７に示されるように、１対の突起３５は、クリップ３０の径方向外側へ向かうにつれてクリップ３０の周方向で幅狭となる先細り形状に形成されている。詳細には、１対の突起３５のうちクリップ３０の周方向で対向する面３５Ｍ１は、クリップ３０の周方向に対して略垂直に形成され、１対の突起３５のうちクリップ３０の周方向で反対側を向く面３５Ｍ２は、クリップ３０の径方向内側（即ち、突起３５の基端側）へ向かうにつれてクリップ３０の開口３１Ａから離れるように湾曲したＲ形状に形成されている。なお、面３５Ｍ２は、面３５Ｍ１と同様に、クリップ３０の周方向に対して略垂直に形成されてもよい。 As shown in FIG. 7, the pair of protrusions 35 are formed in a tapered shape that becomes narrower in the circumferential direction of the clip 30 as it goes radially outward of the clip 30. Specifically, the surfaces 35M1 of the pair of protrusions 35 facing each other in the circumferential direction of the clip 30 are formed substantially perpendicular to the circumferential direction of the clip 30; The surface 35M2 facing the opposite side is formed in an R shape that curves away from the opening 31A of the clip 30 as it goes radially inward of the clip 30 (that is, toward the proximal end of the protrusion 35). Note that the surface 35M2 may be formed substantially perpendicular to the circumferential direction of the clip 30, similarly to the surface 35M1.

クリップ３０の内周面には、１８０度離れた２位置に１対の連結突部３２が突設されている。１対の連結突部３２は、クリップ３０の周方向に延びる円弧状をなしている。そして、クリップ３０がクリップ収容溝１５に嵌着された状態で、１対の連結突部３２が１対の連通孔１６に入り込み、嵌合筒部１４の内側に突出する。また、その状態で、クリップ３０の外周面は嵌合筒部１４の大径部１４Ｋの外周面より内側に位置し、１対の突起３５は大径部１４Ｋの外周面より外側に突出する。 A pair of connecting protrusions 32 are protruded from the inner peripheral surface of the clip 30 at two positions 180 degrees apart. The pair of connecting protrusions 32 have an arcuate shape extending in the circumferential direction of the clip 30. Then, with the clip 30 fitted into the clip housing groove 15 , the pair of connecting protrusions 32 enter the pair of communicating holes 16 and protrude inside the fitting cylindrical part 14 . Further, in this state, the outer circumferential surface of the clip 30 is located inside the outer circumferential surface of the large diameter portion 14K of the fitting cylinder portion 14, and the pair of projections 35 protrudes outward from the outer circumferential surface of the large diameter portion 14K.

図６（Ａ）及び図６（Ｂ）に示されるように、１対の連結突部３２は、クリップ３０の中心軸方向の一方側に寄せて配置され、クリップ３０の表裏が逆になった場合に１対の連通孔１６に入らないようになっている。また、連結突部３２の先端部のうち嵌合筒部１４の先端側を向く面の縁部には、テーパー状に先端傾斜面３２Ｋが形成されている。なお、連結突部３２が先端傾斜面３２Ｋを備えない構成としてもよい。 As shown in FIGS. 6(A) and 6(B), the pair of connecting protrusions 32 are arranged closer to one side in the central axis direction of the clip 30, and the front and back of the clip 30 are reversed. It is designed so that it does not enter the pair of communication holes 16 when Further, a tapered tip inclined surface 32K is formed at the edge of the surface of the tip of the connecting protrusion 32 that faces the tip side of the fitting tube portion 14. Note that the connecting protrusion 32 may be configured without the tip inclined surface 32K.

図７に示されるように、連結突部３２は、その内周部からクリップ３０の開口３１Ａへ向かって突出する突起３２Ｔを備えている。これにより、連通孔１６に挿入された連結突部３２が連通孔１６から外れ難くなっている。また、連結突部３２の内周面のうち突起３２Ｔの反対側の部分は、Ｒ面取りされている。これにより、連結突部３２の連通孔１６への挿入が容易となっている。なお、連結突部３２は、突起３２Ｔを有さない構成であってもよい。 As shown in FIG. 7, the connecting protrusion 32 includes a protrusion 32T that protrudes from the inner circumference toward the opening 31A of the clip 30. As shown in FIG. This makes it difficult for the connecting protrusion 32 inserted into the communication hole 16 to come off from the communication hole 16. Further, a portion of the inner circumferential surface of the connecting protrusion 32 on the side opposite to the protrusion 32T is rounded. This makes it easy to insert the connecting protrusion 32 into the communication hole 16. Note that the connecting protrusion 32 may be configured without the protrusion 32T.

図４に示されるように、環状カバー４０は、円環状をなし、係合アーム７１を一体に備えている。また、環状カバー４０の内径は、嵌合筒部１４の大径部１４Ｋの外径と略同じになっている。そして、環状カバー４０は、クリップ３０が大径部１４Ｋのクリップ収容溝１５に収容される前に、嵌合筒部１４の先端側から小径部１４Ｌへと嵌合される。その後にクリップ３０がクリップ収容溝１５に収容され、大径部１４Ｋの外周面から１対の突起３５をストッパにして環状カバー４０が嵌合筒部１４に抜け止めされる。以下、環状カバー４０において、嵌合筒部１４の先端面に近い側を適宜「前側」といい、その反対側を適宜「後側」という。 As shown in FIG. 4, the annular cover 40 has an annular shape and is integrally provided with an engagement arm 71. Further, the inner diameter of the annular cover 40 is approximately the same as the outer diameter of the large diameter portion 14K of the fitting cylinder portion 14. Then, the annular cover 40 is fitted from the distal end side of the fitting cylinder part 14 to the small diameter part 14L before the clip 30 is accommodated in the clip accommodation groove 15 of the large diameter part 14K. Thereafter, the clip 30 is accommodated in the clip accommodating groove 15, and the annular cover 40 is prevented from coming off into the fitting cylinder part 14 using a pair of projections 35 from the outer peripheral surface of the large diameter part 14K as a stopper. Hereinafter, in the annular cover 40, the side closer to the distal end surface of the fitting cylinder portion 14 will be referred to as the "front side", and the opposite side will be referred to as the "rear side".

図８（Ａ）に示されるように、環状カバー４０には、クリップ３０の１対の突起３５に対応した１対の突起受容部４１が形成されている。それら１対の突起受容部４１は、図９（Ａ）に示すように環状カバー４０の前面に開口を有する矩形状のスリットになっている。また、図８（Ｂ）に示されるように、環状カバー４０の外面のうち突起受容部４１の後側には、環状カバー４０の後縁部に沿って周方向に延びる補強リブ４２が備えられている。そして、１対の突起受容部４１の開口を１対の突起３５に対向させて、環状カバー４０を、小径部１４Ｌから大径部１４Ｋへとスライドすると、図９（Ｂ）に示すように、１対の突起３５が１対の突起受容部４１に受容されて環状カバー４０がクリップ３０の外側に嵌合される。このとき、突起３５がストッパとして突起受容部４１の奥面４１Ａに当接することで、環状カバー４０が嵌合筒部１４に対する後述の正規スライド位置に位置決めされる。 As shown in FIG. 8(A), the annular cover 40 is formed with a pair of protrusion receiving portions 41 corresponding to the pair of protrusions 35 of the clip 30. As shown in FIG. The pair of protrusion receiving parts 41 are rectangular slits having openings on the front surface of the annular cover 40, as shown in FIG. 9(A). Further, as shown in FIG. 8(B), a reinforcing rib 42 extending in the circumferential direction along the rear edge of the annular cover 40 is provided on the rear side of the protrusion receiving portion 41 on the outer surface of the annular cover 40. ing. Then, when the annular cover 40 is slid from the small diameter portion 14L to the large diameter portion 14K with the openings of the pair of projection receiving portions 41 facing the pair of projections 35, as shown in FIG. 9(B), The pair of protrusions 35 are received in the pair of protrusion receiving parts 41, and the annular cover 40 is fitted on the outside of the clip 30. At this time, the annular cover 40 is positioned at a normal sliding position, which will be described later, with respect to the fitting cylinder part 14 by the protrusion 35 abutting against the inner surface 41A of the protrusion receiving part 41 as a stopper.

図１０に示されるように、環状カバー４０の軸方向から見た突起受容部４１の断面形状は、クリップ３０の軸方向から見た突起３５の形状と略同じになっている。具体的には、突起受容部４１は、環状カバー４０の径方向外側へ向かうにつれて環状カバー４０の周方向で幅狭となる先細り形状に形成されていて、突起受容部４１の内面のうち突起３５の面３５Ｍ１と対向する面４１Ｍ１が環状カバー４０の周方向に対して略垂直に形成され、突起３５の面３５Ｍ２と対向する面４１Ｍ２が環状カバー４０の径方向内側へ向かうにつれて面４１Ｍ１から離れるように湾曲したＲ形状に形成されている。 As shown in FIG. 10, the cross-sectional shape of the protrusion receiving portion 41 viewed from the axial direction of the annular cover 40 is approximately the same as the shape of the protrusion 35 when viewed from the axial direction of the clip 30. Specifically, the protrusion receiving part 41 is formed in a tapered shape that becomes narrower in the circumferential direction of the annular cover 40 as it goes radially outward of the annular cover 40 , and the protrusion 35 is formed on the inner surface of the protrusion receiving part 41 . A surface 41M1 facing the surface 35M1 of the annular cover 40 is formed substantially perpendicular to the circumferential direction of the annular cover 40, and a surface 41M2 facing the surface 35M2 of the protrusion 35 moves away from the surface 41M1 as it goes radially inward of the annular cover 40. It is formed into a curved R shape.

図８（Ａ）及び図８（Ｂ）に示されるように、環状カバー４０の内周面には、周方向に延びる係合突部４５が形成されている。係合突部４５は、環状カバー４０の後端寄りに配置され、環状カバー４０のうち１対の突起受容部４１が形成された部位を除く領域に円弧状に形成されている。係合突部４５の内径は、嵌合筒部１４の大径部１４Ｋの外径より若干小さく、クリップ３０の連結突部３２が雄側配管継手５０の外周溝５３Ｍに係合したときのクリップ３０の外径よりも大きくなっている（図１２（Ｂ）参照）。そして、環状カバー４０が後述の正規スライド位置に移動すると、図１２（Ａ）に示すように、係合突部４５がクリップ収容溝１５内に入り込み、環状カバー４０が正規スライド位置に係止される。 As shown in FIGS. 8(A) and 8(B), an engaging protrusion 45 extending in the circumferential direction is formed on the inner peripheral surface of the annular cover 40. As shown in FIGS. The engagement protrusion 45 is disposed near the rear end of the annular cover 40 and is formed in an arc shape in a region of the annular cover 40 excluding the region where the pair of protrusion receiving parts 41 are formed. The inner diameter of the engaging protrusion 45 is slightly smaller than the outer diameter of the large diameter part 14K of the fitting cylinder part 14, and the clip when the connecting protrusion 32 of the clip 30 engages with the outer circumferential groove 53M of the male piping joint 50. 30 (see FIG. 12(B)). Then, when the annular cover 40 moves to the normal sliding position (described later), the engaging protrusion 45 enters the clip accommodation groove 15, and the annular cover 40 is locked in the normal sliding position, as shown in FIG. 12(A). Ru.

また、係合突部４５を周方向の任意の位置での断面の三角形は、環状カバー４０の軸方向に対して傾斜する斜辺を前側と後側とに有する三角形になっている。これにより、大径部１４Ｋを環状カバー４０の内側に容易に挿通させることができる。なお、係合突部４５の断面の三角形は、前側のみが前記斜辺で、後側が、環状カバー４０の軸方向に対して垂直な垂直辺としてもよい。そうすれば、環状カバー４０を正規スライド位置に係止する係止力を高めることができる。 Further, the triangular cross section of the engaging protrusion 45 at any position in the circumferential direction is a triangle having oblique sides that are inclined with respect to the axial direction of the annular cover 40 on the front side and the rear side. Thereby, the large diameter portion 14K can be easily inserted into the inside of the annular cover 40. Note that the triangular cross section of the engaging protrusion 45 may have only the oblique side on the front side and the vertical side perpendicular to the axial direction of the annular cover 40 on the rear side. By doing so, the locking force for locking the annular cover 40 in the normal sliding position can be increased.

環状カバー４０には、突起受容部４１とは別に、環状カバー４０の先端で開放した矩形状の第２切欠部４３が形成されている。第２切欠部４３は、環状カバー４０の先端部に形成され、環状カバー４０の軸方向における長さが突起受容部４１よりも短くなっている。第２切欠部４３は、複数（本実施形態では、２つ）備えられていて、環状カバー４０の周方向で隣り合う第２切欠部４３同士の間には、仕切り壁４４が形成されている。 In addition to the protrusion receiving portion 41, the annular cover 40 is formed with a rectangular second notch 43 that is open at the tip of the annular cover 40. The second notch 43 is formed at the tip of the annular cover 40 and has a length shorter than the protrusion receiving part 41 in the axial direction of the annular cover 40 . A plurality of second notches 43 (in this embodiment, two) are provided, and a partition wall 44 is formed between adjacent second notches 43 in the circumferential direction of the annular cover 40. .

図４に示すように、仕切り壁４４の外側面からは、突片状のアーム支持部７５が側方に張り出している。そして、アーム支持部７５の先端部から係合アーム７１が直角曲げされて、嵌合筒部１４より先方に延びている。また、係合アーム７１の先端部は、環状カバー４０の本体部４０Ｈの中心側に直角曲げされかつその先端から本体部４０Ｈ側に向かって係止突起７２が突出したフック部７３になっている。そして、図２に示すように、嵌合筒部１４が嵌合管部５１Ｙに対する正規嵌合位置に配置されかつ、環状カバー４０が嵌合筒部１４に対する正規スライド位置に配置されると、係合アーム７１が雄側配管継手５０におけるフード部５０Ｆの外側面に重なった状態で、フック部７３の係止突起７２をフード部５０Ｆの内側に係止させて、フック部７３をフード部５０Ｆの先端部に係合することができる。 As shown in FIG. 4, a protruding arm support portion 75 projects laterally from the outer surface of the partition wall 44. As shown in FIG. The engagement arm 71 is bent at a right angle from the distal end of the arm support section 75 and extends forward from the fitting cylinder section 14 . The distal end of the engagement arm 71 is bent at a right angle toward the center of the main body 40H of the annular cover 40, and is a hook portion 73 with a locking protrusion 72 protruding from the distal end toward the main body 40H. . As shown in FIG. 2, when the fitting tube portion 14 is placed in the normal fitting position with respect to the fitting tube portion 51Y and the annular cover 40 is placed in the normal sliding position with respect to the fitting tube portion 14, the engagement occurs. With the mating arm 71 overlapping the outer surface of the hood portion 50F of the male piping joint 50, the locking protrusion 72 of the hook portion 73 is locked to the inside of the hood portion 50F, and the hook portion 73 is attached to the outer surface of the hood portion 50F. Can be engaged with the tip.

つまり、雌側配管継手１０は、嵌合筒部１４が雄側配管継手５０に対して正規嵌合位置に配置されかつ環状カバー４０が正規スライド位置に配置されていることを条件にして、係合アーム７１を雄側配管継手５０の外側面に重ねて雄側配管継手５０の被係合部（フード部５０Ｆの先端部）に係合させることができ、その条件を満たさなければ、係合アーム７１を被係合部に係合させることができないようになっている。また、フード部５０Ｆは円筒形をなし、環状カバー４０の本体部４０Ｈからフード部５０Ｆの先端までの距離は、フード部５０Ｆの周方向の全体で同じであるので、上記した条件を満たしていれば、係合アーム７１はフード部５０Ｆの周方向の任意の位置に係合する。 In other words, the female side piping joint 10 is engaged only on the condition that the fitting cylinder portion 14 is placed in the normal fitting position with respect to the male side piping fitting 50 and the annular cover 40 is placed in the normal sliding position. The mating arm 71 can be overlapped with the outer surface of the male piping joint 50 and engaged with the engaged part (the tip of the hood part 50F) of the male piping joint 50, and if this condition is not met, the engagement will not be possible. The arm 71 cannot be engaged with the engaged portion. Furthermore, the hood portion 50F has a cylindrical shape, and the distance from the main body portion 40H of the annular cover 40 to the tip of the hood portion 50F is the same throughout the circumferential direction of the hood portion 50F, so the above conditions must be met. For example, the engagement arm 71 engages with any position in the circumferential direction of the hood portion 50F.

本実施形態の配管継手１００の構成に関する説明は以上である。次に、本実施形態の作用について説明する。図１に示すように、ドレンホース１２０の両端部の雄側配管継手５０を、ドレン管１１０Ａ及びドレン設備管１１１の各雌側配管継手１０に結合するには、図９（Ａ）に示すように、雌側配管継手１０のクリップ３０をクリップ収容溝１５に収容し、環状カバー４０を嵌合筒部１４の小径部１４Ｌに配置した状態にしておく。そして、図１１に示すように、雄側配管継手５０の嵌合管部５１Ｙを、雌側配管継手１０の嵌合筒部１４内に押し込む。すると、嵌合管部５１Ｙのテーパー部５３Ｔが連結突部３２の先端傾斜面３２Ｋ（図６（Ａ）参照）に摺接して、クリップ３０が拡径変形される。そして、嵌合管部５１Ｙのテーパー部５３Ｔが嵌合筒部１４内のテーパー部１４Ｔに当接した正規嵌合位置に至ったところで、外周溝５３Ｍに連結突部３２が入り込み、クリップ３０が弾性復帰してクリップ収容溝１５に収容された状態に戻る。これにより、雌雄の配管継手１０，５０が嵌合して抜け止めされたロック状態になる。このとき、雄側配管継手５０のＯリング溝５２Ｍに備えた図示しないＯリングによって、雌雄の配管継手１０，５０の嵌合部分は密閉される。 The description regarding the configuration of the piping joint 100 of this embodiment is above. Next, the operation of this embodiment will be explained. As shown in FIG. 1, in order to connect the male side piping joints 50 at both ends of the drain hose 120 to the female side piping joints 10 of the drain pipe 110A and the drain equipment pipe 111, as shown in FIG. 9(A), Next, the clip 30 of the female piping joint 10 is accommodated in the clip housing groove 15, and the annular cover 40 is placed in the small diameter portion 14L of the fitting cylinder portion 14. Then, as shown in FIG. 11, the fitting tube portion 51Y of the male side piping joint 50 is pushed into the fitting tube portion 14 of the female side piping joint 10. Then, the tapered portion 53T of the fitting tube portion 51Y comes into sliding contact with the tip inclined surface 32K (see FIG. 6(A)) of the connecting protrusion 32, and the clip 30 is deformed to expand its diameter. Then, when the tapered portion 53T of the fitting tube portion 51Y reaches the normal fitting position where it abuts the tapered portion 14T in the fitting tube portion 14, the connecting protrusion 32 enters the outer circumferential groove 53M, and the clip 30 becomes elastic. It returns to the state where it is housed in the clip housing groove 15. As a result, the male and female piping joints 10 and 50 are fitted together and locked into a locked state. At this time, the fitting portions of the male and female piping joints 10, 50 are sealed by an O-ring (not shown) provided in the O-ring groove 52M of the male piping joint 50.

次いで、図９（Ａ）に示すように、環状カバー４０の１対の突起受容部４１をクリップ３０の１対の突起３５に対向させて環状カバー４０を雄側配管継手５０側にスライドさせる。すると、図９（Ｂ）に示すように、１対の突起３５が１対の突起受容部４１に受容され、突起受容部４１の奥面４１Ａに突起３５が当接することで、環状カバー４０が正規スライド位置に位置決めされる。また、環状カバー４０は、図１１及び図１２（Ａ）に示すように、係合突部４５とクリップ収容溝１５との係止によって正規スライド位置に係止される。そして、環状カバー４０がクリップ３０と共にクリップ収容溝１５全体を外側が覆った状態になる。これにより、クリップ３０の拡径変形が規制されて、前述のロック状態が強化される。また、環状カバー４０によって１対の突起３５同士の相対移動が規制されることによっても、クリップ３０の拡径変形が規制されてロック状態が強化される。 Next, as shown in FIG. 9A, the annular cover 40 is slid toward the male piping joint 50 with the pair of protrusion receiving portions 41 of the annular cover 40 facing the pair of protrusions 35 of the clip 30. Then, as shown in FIG. 9B, the pair of protrusions 35 are received in the pair of protrusion receiving parts 41, and the protrusions 35 come into contact with the inner surface 41A of the protrusion receiving part 41, so that the annular cover 40 is closed. It is positioned at the normal slide position. Further, as shown in FIGS. 11 and 12(A), the annular cover 40 is locked in the normal sliding position by the engagement between the engagement protrusion 45 and the clip accommodation groove 15. Then, the annular cover 40 and the clip 30 are in a state in which the entire clip accommodation groove 15 is covered on the outside. As a result, the deformation of the clip 30 to expand its diameter is restricted, and the above-mentioned locked state is strengthened. Furthermore, since the annular cover 40 restricts the relative movement of the pair of protrusions 35, the deformation of the clip 30 to increase its diameter is restricted, and the locked state is strengthened.

この状態、つまり、嵌合筒部１４が嵌合管部５１Ｙに対する正規嵌合位置に配置されかつ、環状カバー４０が嵌合筒部１４に対する正規スライド位置に配置された状態になると、係合アーム７１が雄側配管継手５０のフード部５０Ｆの外側面に重なり、係止突起７２の外面がフード部５０Ｆの先端縁に側方から当接する。そこで、フック部７３をフード部５０Ｆ側に向けて押圧すると、係止突起７２の外面とフード部５０Ｆとが摺接して係止突起７２がフード部５０Ｆの先端面を乗り越えてフード部５０Ｆの内側に係止し、係合アーム７１がフード部５０Ｆの先端部に係合した状態になる。ここで、係合アーム７１は、フード部５０Ｆの周方向の任意の位置で係合するので、雌側配管継手１０に対する雄側配管継手５０の位相を気にすることなく、係合アーム７１をフード部５０Ｆに係合することができる。そして、係合アーム７１の係合によっても前述のロック状態が強化される。なお、係合アーム７１のフック部７３は、フード部５０Ｆの内側に入り込んで係合するので異物の当接等の外乱の影響を受け難く、係合状態が安定する。 In this state, that is, when the fitting tube portion 14 is placed in the normal fitting position with respect to the fitting tube portion 51Y and the annular cover 40 is placed in the normal sliding position with respect to the fitting tube portion 14, the engagement arm 71 overlaps the outer surface of the hood portion 50F of the male piping joint 50, and the outer surface of the locking protrusion 72 abuts the tip edge of the hood portion 50F from the side. Therefore, when the hook part 73 is pressed toward the hood part 50F side, the outer surface of the locking protrusion 72 and the hood part 50F slide into contact, and the locking protrusion 72 rides over the tip surface of the hood part 50F to the inside of the hood part 50F. The engagement arm 71 is engaged with the tip of the hood portion 50F. Here, since the engagement arm 71 engages at any position in the circumferential direction of the hood portion 50F, the engagement arm 71 can be engaged without worrying about the phase of the male side piping joint 50 with respect to the female side piping joint 10. It can engage with the hood portion 50F. The aforementioned locked state is also strengthened by the engagement of the engagement arm 71. In addition, since the hook portion 73 of the engagement arm 71 enters inside the hood portion 50F and engages with it, it is not easily affected by disturbances such as contact with foreign objects, and the engaged state is stable.

以上の操作により雌側配管継手１０と雄側配管継手５０との結合が完了する。そして、図１に示すように、ドレンホース１２０を介して空調機１１０のドレン管１１０Ａと、建造物のドレン設備管１１１とを接続することができる。 Through the above operations, the connection between the female side piping joint 10 and the male side piping joint 50 is completed. As shown in FIG. 1, the drain pipe 110A of the air conditioner 110 and the drain equipment pipe 111 of the building can be connected via the drain hose 120.

ところで、雌雄の配管継手１０，５０が正しく結合されていないと（以下、これを「誤結合」という）、天井裏で水漏れが発生することになる。誤結合の第１の例としては、図２に示した雄側配管継手５０の嵌合管部５１Ｙのうち先端側の一方のＯリング溝５２Ｍを有する部分のみが嵌合筒部１４の小径部１４Ｌに嵌合され、他方のＯリング溝５２Ｍが嵌合筒部１４の大径部１４Ｋ内に位置した半嵌合状態で、先端側のＯリング溝５２ＭのＯリング（図示せず）の摩擦により、雌雄の配管継手１０，５０が仮止めされることが考えられる。また、これを作業者が嵌合状態と勘違いして環状カバー４０を正規スライド位置に移動することも考えられる。この場合、係合アーム７１を、フード部５０Ｆの先端部に係合させることができないので、作業者は雌雄の配管継手１０，５０が正しく結合されていないこと（つまり、誤結合）に気付く。仮に作業時に誤結合に気付かなくても、後で目視確認した際に、係合アーム７１の先端がフード部５０Ｆの先端より雌側配管継手１０側にずれた位置に重なり、しかも、フック部７３の先端がフード部５０Ｆの外側面に付き上がって係合アーム７１がフード部５０Ｆの外側面から浮いた状態になるので誤結合に容易に気付く。また、係合アーム７１と雄側配管継手５０とは色が異なるので、暗所でも薄明かりで誤結合に気付くことができる。さらには、環状カバー４０が正規スライド位置に配置されていないと、環状カバー４０とは色が異なるクリップ３０の全体が露出するので、そのことによっても誤結合に気付く。また、図１２（Ｂ）に示すように、環状カバー４０が途中までスライドされて、クリップ３０の外側に半嵌合している場合には、環状カバー４０の第２切欠部４３を通してクリップ３０が視認されるので、そのことによって誤結合に気付く。 By the way, if the male and female piping joints 10 and 50 are not properly connected (hereinafter referred to as "misconnection"), water leakage will occur in the attic. As a first example of incorrect connection, only the portion of the fitting tube portion 51Y of the male piping joint 50 shown in FIG. 14L and the other O-ring groove 52M is located in the large diameter part 14K of the fitting cylinder 14 in a half-fitted state, the friction of the O-ring (not shown) in the O-ring groove 52M on the tip side It is conceivable that the male and female piping joints 10, 50 are temporarily fixed by this. It is also conceivable that the operator may mistake this for a fitted state and move the annular cover 40 to the normal sliding position. In this case, since the engaging arm 71 cannot be engaged with the tip of the hood portion 50F, the operator notices that the male and female piping joints 10, 50 are not properly connected (that is, erroneously connected). Even if you do not notice the incorrect connection during the work, when you visually check it later, you will notice that the tip of the engaging arm 71 overlaps with the tip of the hood portion 50F toward the female piping joint 10 side, and that the hook portion 73 Since the distal end of the engaging arm 71 is lifted up from the outer surface of the hood portion 50F and the engagement arm 71 is suspended from the outer surface of the hood portion 50F, incorrect connection is easily noticed. Further, since the engaging arm 71 and the male piping joint 50 have different colors, incorrect coupling can be noticed in dim light even in a dark place. Furthermore, if the annular cover 40 is not placed at the normal sliding position, the entire clip 30, which has a different color from the annular cover 40, will be exposed, and this will also make the user aware of incorrect coupling. Further, as shown in FIG. 12(B), when the annular cover 40 is slid halfway and is partially fitted to the outside of the clip 30, the clip 30 is inserted through the second notch 43 of the annular cover 40. Since it is visually recognized, the erroneous connection is noticed by this.

なお、誤結合ではないが、雌雄の配管継手１０，５０が正規嵌合位置まで嵌合した後、環状カバー４０を正規スライド位置にスライドする操作を忘れることが考えられる。この場合も上記誤結合の第１の例と同様の状態になり、環状カバー４０のスライド操作が行われていないことに容易に気付く。 Although it is not a misconnection, it is conceivable that the user forgets to slide the annular cover 40 to the normal sliding position after the male and female pipe joints 10 and 50 are fitted to the normal fitting position. In this case as well, the situation is similar to the first example of incorrect connection, and it is easy to notice that the annular cover 40 has not been slid.

誤結合の第２の例としては、クリップ３０が外れた状態で雌雄の配管継手１０，５０が嵌合され、環状カバー４０が正規スライド位置までスライドされて、係合アーム７１がフード部５０Ｆに係合されることが考えられる。しかしながら、この場合、環状カバー４０の突起受容部４１内のクリップ３０の突起３５を視認することができないので、それを以て誤結合に気付く。しかも、環状カバー４０とクリップ３０と継手本体部１１とは、それぞれ色が異なるので誤結合に容易に気付く。 A second example of incorrect connection is when the male and female pipe joints 10 and 50 are fitted with the clip 30 removed, the annular cover 40 is slid to the normal sliding position, and the engagement arm 71 is moved to the hood portion 50F. It is conceivable that they will be engaged. However, in this case, since the protrusion 35 of the clip 30 within the protrusion receiving portion 41 of the annular cover 40 cannot be visually recognized, the incorrect connection can be noticed. Moreover, since the annular cover 40, the clip 30, and the joint main body 11 have different colors, it is easy to notice incorrect connection.

なお、本実施形態では、環状カバー４０が正規スライド位置でフード部５０Ｆのホース当接部５５に当接又は隣接するので、クリップ３０が外れた状態でもホース当接部５５が環状カバー４０を正規スライド位置に位置決めするストッパになり得る。これに対し、クリップ３０が外れると、環状カバー４０が正規スライド位置に位置決めされず、正規スライド位置を超えて移動する構成としてもよい。そうすれば、クリップ３０が外れると、環状カバー４０が正規スライド位置よりフード部５０Ｆ側に接近し、係合アーム７１のフック部７３がフード部５０Ｆの先端部に係合することができないか係合し難くなり、そのことを以て作業者が誤結合に気付くようになる。 In this embodiment, since the annular cover 40 is in contact with or adjacent to the hose contact portion 55 of the hood portion 50F at the normal sliding position, the hose contact portion 55 can keep the annular cover 40 in the normal position even when the clip 30 is removed. It can serve as a stopper for positioning the slide position. On the other hand, when the clip 30 comes off, the annular cover 40 may not be positioned at the normal sliding position but may be moved beyond the normal sliding position. Then, when the clip 30 comes off, the annular cover 40 approaches the hood part 50F side from the normal sliding position, and the hook part 73 of the engagement arm 71 engages with the tip of the hood part 50F. This makes it difficult for the operator to connect incorrectly.

このように本実施形態の配管継手１００では、係合アーム７１がフード部５０Ｆの先端部に係合しているか否かの確認を以て、雌雄の配管継手１０，５０がロック状態であるか否かの確認と、そのロック状態が強化されているか否かの確認との両方を一度に容易に行うことができる。これにより、天井裏のような暗所や狭い場所に配置されることが多いドレンホースの結合確認作業を容易に行うことができる。また、本実施形態の配管継手１００では、フード部５０Ｆの先端部に係合アーム７１を係合させた状態を維持して雌雄の配管継手１０，５０を互いに回転させることができる。つまり、本実施形態の配管継手１００は回転継手として利用することができ、例えば、ドレンホースを結合後に容易に姿勢変更することが可能になる。 In this way, in the piping joint 100 of the present embodiment, it is possible to determine whether the male and female piping joints 10, 50 are in the locked state by checking whether the engagement arm 71 is engaged with the tip of the hood portion 50F. It is possible to easily check both the lock status and whether or not the lock status has been strengthened at the same time. This makes it easy to check the connection of drain hoses, which are often placed in dark or narrow spaces such as in the ceiling. Furthermore, in the piping joint 100 of this embodiment, the male and female piping joints 10 and 50 can be rotated relative to each other while maintaining the state in which the engagement arm 71 is engaged with the distal end portion of the hood portion 50F. In other words, the piping joint 100 of this embodiment can be used as a rotary joint, and for example, the posture of the drain hose can be easily changed after being connected.

なお、係合アーム７１とフード部５０Ｆの外側面との間にマイナスドライバー等の道具を差し込んで係合アーム７１とフード部５０Ｆとの係合を解除し、環状カバー４０を雄側配管継手５０から離れる側に移動し、さらに、クリップ３０の１対の突起３５を摘まんで拡径変形させれば、雌雄の配管継手１０，５０を分離することができる。 Note that a tool such as a flathead screwdriver is inserted between the engagement arm 71 and the outer surface of the hood portion 50F to release the engagement between the engagement arm 71 and the hood portion 50F, and the annular cover 40 is connected to the male side piping joint 50. The female and male piping joints 10 and 50 can be separated by moving the clip 30 away from the clip 30 and pinching the pair of projections 35 of the clip 30 to expand the diameter.

［第２実施形態］
図１３に示された本実施形態の雌側配管継手１０Ａは、係合アーム７１が弾性ヒンジ部７４を介してアーム支持部７５に回動可能に支持されている点が第１実施形態と異なる。具体的には、本実施形態の環状カバー４０Ａには、本体部４０Ｈから側方に延びる帯状板部７１Ｘが備えられ、その先端部が前述のフック部７３になっている。また、帯状板部７１Ｘの長手方向の基端寄り位置を溝部７４Ｍが横切り、その溝部７４Ｍは、断面三角形をなしてフード部５０Ｆ側を向いて開口している。そして、溝部７４Ｍより帯状板部７１Ｘの先端側が係合アーム７１をなす一方、溝部７４Ｍより帯状板部７１Ｘの基端側がアーム支持部７５をなし、さらに、帯状板部７１Ｘのうち溝部７４Ｍの底の薄肉部が弾性ヒンジ部７４になっている。その他の構成に関しては、第１実施形態と同じになっている。 [Second embodiment]
The female side piping joint 10A of this embodiment shown in FIG. 13 differs from the first embodiment in that an engagement arm 71 is rotatably supported by an arm support section 75 via an elastic hinge section 74. . Specifically, the annular cover 40A of this embodiment includes a band-shaped plate portion 71X extending laterally from the main body portion 40H, the tip of which is the hook portion 73 described above. Further, a groove 74M crosses a position near the proximal end in the longitudinal direction of the strip plate portion 71X, and the groove 74M has a triangular cross section and opens toward the hood portion 50F. The distal end side of the band-like plate part 71X from the groove part 74M forms the engagement arm 71, while the proximal end side of the band-like plate part 71X from the groove part 74M forms the arm support part 75, and furthermore, the bottom of the groove part 74M of the band-like plate part 71X The thin wall portion serves as an elastic hinge portion 74. The other configurations are the same as in the first embodiment.

本実施形態の雌側配管継手１０Ａでは、環状カバー４０Ａが上記構造をなすことで、環状カバー４０Ａを樹脂成形にて容易に製造することができる。また、係合アーム７１は、弾性ヒンジ部７４を弾性変形させてフード部５０Ｆの先端部に係合することができ、フード部５０Ｆの先端部に係合していないときは、係合アーム７１がフード部５０Ｆの外側面から離れて雌側配管継手１０Ａ（詳細には、環状カバー４０Ａ）の側方に延びた状態になる。即ち、係合アーム７１の姿勢に基づいて、雌雄の配管継手１０，５０がロック状態か否かを容易かつ明確に判別することができる。 In the female side piping joint 10A of this embodiment, the annular cover 40A has the above structure, so that the annular cover 40A can be easily manufactured by resin molding. Further, the engagement arm 71 can be engaged with the tip of the hood section 50F by elastically deforming the elastic hinge section 74, and when the engagement arm 71 is not engaged with the tip of the hood section 50F, the engagement arm 71 is separated from the outer surface of the hood portion 50F and extends to the side of the female piping joint 10A (specifically, the annular cover 40A). That is, based on the posture of the engagement arm 71, it is possible to easily and clearly determine whether the male and female piping joints 10, 50 are in the locked state.

［第３実施形態］
図１４及び図１５に示された本実施形態の雌側配管継手１０Ｂは、第１実施形態で説明した係合アーム７１が、環状カバー４０Ｂの１８０度離れた２箇所に配置されている。その他構造に関しては，第１実施形態と同じになっている。 [Third embodiment]
In the female piping joint 10B of this embodiment shown in FIGS. 14 and 15, the engagement arms 71 described in the first embodiment are arranged at two locations 180 degrees apart on the annular cover 40B. Other structures are the same as those of the first embodiment.

［第４実施形態］
図１６に示された本実施形態の雌側配管継手１０Ｃが有する環状カバー４０Ｃは、第３実施形態で説明した環状カバー４０Ｂの１対の係合アーム７１が、第２実施形態の係合アーム７１と同様に、弾性ヒンジ部７４を介してアーム支持部７５に支持されている。その他構造に関しては，第１及び第２と実施形態と同じになっている。 [Fourth embodiment]
The annular cover 40C of the female piping joint 10C of the present embodiment shown in FIG. 71, it is supported by an arm support section 75 via an elastic hinge section 74. Other structures are the same as the first and second embodiments.

［第５実施形態］
本実施形態は図１７～図２３に示されており、雌側配管継手１０Ｄが、環状カバー４０を有さず、１対の係合アーム７１がクリップ３０Ｄに備えられている点が第３実施形態と大きく相違する。以下、第３実施形態と相違する点に関してのみ説明する。 [Fifth embodiment]
This embodiment is shown in FIGS. 17 to 23, and is the third embodiment in that the female side piping joint 10D does not have the annular cover 40 and a pair of engagement arms 71 are provided on the clip 30D. It is greatly different from the form. Hereinafter, only the points that are different from the third embodiment will be explained.

図１７及び図１８に示すように、本実施形態の雌側配管継手１０Ｄの大径部１４Ｋは、クリップ収容溝１５に挟まれた堰部１５Ｓの反対側部分から側方に張り出す張出突部１７を備える。張出突部１７は、クリップ収容溝１５より小径部１４Ｌ側に配置され、その先端部から脱落規制爪２１が直立してクリップ収容溝１５に対向している。また、図２０に示すように、脱落規制爪２１の先端部からは大径部１４Ｋに向かって三角形の係止突起２３が突出している。また、その係止突起２３と張出突部１７との対向面は、クリップ収容溝１５内の１対の内側面と略面一に配置されている。 As shown in FIGS. 17 and 18, the large diameter portion 14K of the female piping joint 10D of this embodiment has an overhanging protrusion that extends laterally from the opposite side of the weir portion 15S sandwiched between the clip accommodation grooves 15. A section 17 is provided. The overhanging protrusion 17 is disposed closer to the small diameter portion 14L than the clip accommodating groove 15, and the falling-off regulating pawl 21 stands upright from its tip and faces the clip accommodating groove 15. Further, as shown in FIG. 20, a triangular locking protrusion 23 projects from the distal end of the fall-off regulating claw 21 toward the large diameter portion 14K. Further, the opposing surfaces of the locking protrusion 23 and the protruding protrusion 17 are arranged substantially flush with the pair of inner surfaces within the clip housing groove 15 .

図１９（Ａ）及び図１９（Ｂ）に示されるように、本実施形態のクリップ３０Ｄには、１対の突起３５から互いに近づくように延びる１対の連結アーム７６が備えられている。それら１対の連結アーム７６は、円弧状に湾曲し、堰部１５Ｓに外側から重ねられる（図２１参照）。そして、クリップ３０Ｄは、１対の連結アーム７６が雄側配管継手５０の周方向でオーバーラップする閉環状態（図２１参照）と、１対の連結アーム７６の間に隙間が形成される開環状態（図２２（Ａ）参照）とに変化する。 As shown in FIGS. 19(A) and 19(B), the clip 30D of this embodiment includes a pair of connecting arms 76 that extend from the pair of protrusions 35 so as to approach each other. The pair of connecting arms 76 are curved in an arc shape and are stacked on the weir portion 15S from the outside (see FIG. 21). The clip 30D can be operated in a closed ring state (see FIG. 21) in which the pair of connecting arms 76 overlap in the circumferential direction of the male piping joint 50, and in an open ring state in which a gap is formed between the pair of connecting arms 76. state (see FIG. 22(A)).

図１９（Ａ）及び図１９（Ｂ）に示されるように、連結アーム７６の先端部には、突片３６が備えられ、突片３６の先端部には、係止突起３７が形成されている。一方の連結アーム７６では、突片３６は雄側配管継手５０の中心側に寄せて配置され、係止突起３７が雄側配管継手５０の外側に向かって突出している。これに対し、他方の連結アーム７６では、突片３６が雄側配管継手５０の外側に寄せて配置され、係止突起３７が雄側配管継手５０の中心側に向かって突出している。そして、クリップ３０Ｄが閉環状態のときには、１対の係止突起３７同士が互いに係止する（図２１参照）。 As shown in FIGS. 19(A) and 19(B), a protruding piece 36 is provided at the distal end of the connecting arm 76, and a locking protrusion 37 is formed at the distal end of the protruding piece 36. There is. In one of the connecting arms 76 , the projecting piece 36 is arranged closer to the center of the male pipe joint 50 , and the locking projection 37 projects toward the outside of the male pipe joint 50 . On the other hand, in the other connecting arm 76 , the projecting piece 36 is arranged closer to the outside of the male pipe joint 50 , and the locking projection 37 projects toward the center of the male pipe joint 50 . When the clip 30D is in the closed state, the pair of locking protrusions 37 lock each other (see FIG. 21).

図２２（Ｂ）に示されるように、クリップ３０Ｄが開環状態になると、嵌合筒部１４の堰部１５Ｓが１対の連結アーム７６の間から露出する。ここで、堰部１５Ｓには、１対の連結アーム７６とは異なる色が付されている（図２２（Ｂ）では、堰部１５Ｓに灰色を付すことで、色彩の相違を表している。）。これにより、１対の連結アーム７６の間に隙間が形成されているか否か、即ち、クリップ３０Ｄが閉環状態と開環状態の何れの状態であるかを作業者に認識させ易くなる。 As shown in FIG. 22(B), when the clip 30D is in the open state, the dam part 15S of the fitting cylinder part 14 is exposed from between the pair of connecting arms 76. Here, the dam part 15S is colored differently from the pair of connecting arms 76 (in FIG. 22(B), the dam part 15S is colored gray to represent the difference in color). ). This makes it easier for the operator to recognize whether a gap is formed between the pair of connecting arms 76, that is, whether the clip 30D is in a closed ring state or an open ring state.

図１９（Ａ）及び図１９（Ｂ）に示されるように、クリップ３０Ｄの外周面には、１対の連結突部３２の裏側位置から側方に１対の張出部３３が張り出し、それら張出部３３から雄側配管継手５０側に突出する突片が側方に直角曲げされて１対のアーム支持部７５が形成されている。そして、第１実施形態で説明した１対の係合アーム７１が、１対のアーム支持部７５の先端部から雄側配管継手５０側に直角曲げされて延びている。 As shown in FIGS. 19(A) and 19(B), on the outer peripheral surface of the clip 30D, a pair of projecting portions 33 project laterally from the back side of the pair of connecting protrusions 32. A pair of arm support portions 75 are formed by bending protruding pieces from the overhang portion 33 toward the male piping joint 50 side at right angles. The pair of engagement arms 71 described in the first embodiment extend from the distal ends of the pair of arm support parts 75 toward the male piping joint 50 in a right-angled manner.

本実施形態の配管継手１００の構成に関する説明は以上である。本実施形態の配管継手１００も前記第１～第４の実施形態と同様に、雌側配管継手１０Ｄの嵌合筒部１４が雄側配管継手５０の嵌合管部５１Ｙの正規嵌合位置まで嵌合されると、図２３に示すように、クリップ３０Ｄの連結突部３２が雄側配管継手５０の外周溝５３Ｍに係合して雌雄の配管継手１０，５０がロック状態になる。そして、そのロック状態になっていることを条件に、クリップ３０Ｄの１対の係合アーム７１が、雄側配管継手５０のフード部５０Ｆの先端部に係合する。これにより、係合アーム７１がフード部５０Ｆの先端部に係合しているか否かの確認を以て、雌雄の配管継手１０，５０がロック状態か否かを確認することができる。また、前記第１～第４の実施形態と同様に、係合アーム７１は、雄側配管継手５０の外側面に重なった状態でフード部５０Ｆの先端部に係合するので係合しているか否かの相違が明確になり、雌雄の配管継手１０，５０がロック状態か否かを容易に確認することができる。 The description regarding the configuration of the piping joint 100 of this embodiment is above. Similarly to the first to fourth embodiments, the piping joint 100 of this embodiment also has the fitting cylindrical portion 14 of the female piping joint 10D up to the normal fitting position of the mating pipe portion 51Y of the male piping joint 50. When fitted, as shown in FIG. 23, the connecting protrusion 32 of the clip 30D engages with the outer circumferential groove 53M of the male piping joint 50, and the male and female piping joints 10, 50 become locked. Then, on the condition that the clip 30D is in the locked state, the pair of engagement arms 71 of the clip 30D engage with the tip of the hood portion 50F of the male piping joint 50. Thereby, by checking whether the engagement arm 71 is engaged with the tip of the hood portion 50F, it is possible to check whether the male and female piping joints 10, 50 are in the locked state. Further, as in the first to fourth embodiments, the engagement arm 71 engages with the tip of the hood portion 50F while overlapping the outer surface of the male piping joint 50, so whether the engagement arm 71 is engaged or not It becomes clear whether the male and female piping joints 10, 50 are locked or not, and it can be easily confirmed whether or not the male and female piping joints 10, 50 are locked.

なお、本実施形態の配管継手１００では、雌雄の配管継手１０，５０を分離するためにクリップ３０Ｄを開環状態にした場合には、脱落規制爪２１によってクリップ３０Ｄが継手本体部１１Ｄから脱落することが防がれる。 In addition, in the piping joint 100 of this embodiment, when the clip 30D is opened to separate the male and female piping joints 10 and 50, the clip 30D falls off from the joint main body 11D by the falling-off regulating claw 21. This will be prevented.

［第６実施形態］
本実施形態は、図２４に示されており、本実施形態の雌側配管継手１０Ｅは、環状カバー４０Ｖの１対の突起受容部４１Ｖの形状が第３実施形態と異なり、それ以外は第３実施形態と同じになっている。具体的には、図２４（Ａ）に示されるように突起受容部４１Ｖは、Ｌ字状をなし、環状カバー４０Ｖの先端縁から基端側へ直線状に延びた誘導部４１ＶＡと、誘導部４１ＶＡから環状カバー４０Ｖの周方向の一方側に延びた収容部４１ＶＢとを備える。そして、環状カバー４０Ｖをスライド操作して、図２４（Ｂ）に示されるように、１対の突起受容部４１Ｖの１対の誘導部４１ＶＡにクリップ３０Ｄの１対の突起３５を受容してから、環状カバー４０Ｖを回転操作して、図２４（Ｃ）に示されるように、１対の突起３５を１対の収容部４１ＶＢに収容することができる。これにより、環状カバー４０Ｖが正規スライド位置に安定して保持される。 [Sixth embodiment]
This embodiment is shown in FIG. 24, and the female side piping joint 10E of this embodiment is different from the third embodiment in the shape of the pair of protrusion receiving parts 41V of the annular cover 40V, and the other parts are the third embodiment. It is the same as the embodiment. Specifically, as shown in FIG. 24(A), the protrusion receiving portion 41V has an L-shape and includes a guide portion 41VA extending linearly from the distal end edge of the annular cover 40V toward the proximal end, and a guide portion 41V. The housing part 41VB extends from the annular cover 41VA to one side in the circumferential direction of the annular cover 40V. Then, by sliding the annular cover 40V, as shown in FIG. 24(B), the pair of protrusions 35 of the clip 30D are received in the pair of guiding parts 41VA of the pair of protrusion receiving parts 41V. By rotating the annular cover 40V, the pair of protrusions 35 can be accommodated in the pair of accommodating portions 41VB, as shown in FIG. 24(C). Thereby, the annular cover 40V is stably held at the normal sliding position.

［他の実施形態］
（１）図２５（Ａ）に示すように、上記第１～第６の実施形態の係合アーム７１の係止突起７２の外側にガイド面７２Ｇを設けてもよい。そうすれば、ガイド面７２Ｇをフード部５０Ｆの先端外縁部に摺接させてフック部７３をフード部５０Ｆの先端部に係合させる作業が容易になる。 [Other embodiments]
(1) As shown in FIG. 25(A), a guide surface 72G may be provided on the outside of the locking protrusion 72 of the engaging arm 71 of the first to sixth embodiments. This makes it easier to bring the guide surface 72G into sliding contact with the outer edge of the tip of the hood portion 50F and engage the hook portion 73 with the tip of the hood portion 50F.

（２）また、図２５（Ｂ）に示すように、上記第１～第６の実施形態の係合アーム７１の係止突起７２の内側にガイド面７２Ｊを設けて、係止突起７２がフード部５０Ｆの先端面を乗り越えたら容易にフード部５０Ｆの内側に入り込むようにしてもよい。 (2) Furthermore, as shown in FIG. 25(B), a guide surface 72J is provided inside the locking protrusion 72 of the engaging arm 71 of the first to sixth embodiments, so that the locking protrusion 72 is connected to the hood. It may be arranged so that it easily enters the inside of the hood part 50F after getting over the distal end surface of the part 50F.

（３）また、図２６（Ａ）に示すように、係合アーム７１Ｖの先端部から外側に突出する三角形の係止突起７７を設け、フード部５０Ｆの先端部から外側に張り出すフランジ７８の貫通孔７８Ａに係合アーム７１Ｖの先端部を通して係止突起７７を係合させる構成としてもよい。この場合、係合アーム７１Ｖとフード部５０Ｆの側面との間に、係合アーム７１Ｖを変形させるためのスペースを設けておけばよい。また、フランジ７８を設けず、係止突起７７を係合アーム７１Ｖの先端部から内側に突出させてフード部５０Ｆの先端面に係合するようにしてもよい。 (3) Furthermore, as shown in FIG. 26(A), a triangular locking protrusion 77 is provided that protrudes outward from the tip of the engagement arm 71V, and a flange 78 that protrudes outward from the tip of the hood portion 50F is provided. The locking protrusion 77 may be engaged with the distal end of the engagement arm 71V through the through hole 78A. In this case, a space for deforming the engaging arm 71V may be provided between the engaging arm 71V and the side surface of the hood portion 50F. Alternatively, the flange 78 may not be provided, and the locking protrusion 77 may be made to protrude inward from the distal end of the engagement arm 71V and engage with the distal end surface of the hood portion 50F.

（４）さらに、図２６（Ｂ）に示すように、係合アーム７１Ｗの先端部に貫通孔７３Ａを形成し、フード部５０Ｆの外側面から突出する突起７９が貫通孔７３Ａに係合する構成としてもよい。 (4) Furthermore, as shown in FIG. 26(B), a through hole 73A is formed at the tip of the engagement arm 71W, and a projection 79 protruding from the outer surface of the hood portion 50F engages with the through hole 73A. You can also use it as

（５）また、係合アーム７１が係合する対象は、フード部５０Ｆに限定されるものではない。それの一例として、例えば、フード部５０Ｆの円筒壁５６を設けず、ホース当接部５５のみを備えてドレンホース１２０の側方に張り出させ、その先端部に係合アーム７１が係合する構成等が考えられる。 (5) Furthermore, the object that the engagement arm 71 engages with is not limited to the hood portion 50F. As an example of this, for example, the cylindrical wall 56 of the hood part 50F is not provided, and only the hose contact part 55 is provided, and the drain hose 120 is jutted out to the side, and the engagement arm 71 is engaged with the tip part of the hose contact part 55. Possible configurations, etc.

（６）前記実施形態では、前記第１～第６の実施形態で、係合アーム７１が１つ又は２つ備えられた例を示したが、係合アームは３つ以上であってもよい。また、第５及び第６の実施形態の係合アーム７１を、前記第２及び第４実施形態の係合アーム７１のように回動可能に支持してもよい。 (6) In the above embodiments, an example was shown in which one or two engagement arms 71 were provided in the first to sixth embodiments, but there may be three or more engagement arms. . Further, the engagement arm 71 of the fifth and sixth embodiments may be rotatably supported like the engagement arm 71 of the second and fourth embodiments.

（７）前記第１～第６の実施形態のクリップ３０に代えて、例えば嵌合筒部１４に側方から嵌合されて連通孔１６を通して外周溝５３Ｍに係合するＵ形又はＣ形のクリップを設け、そのクリップに回動式の係合アームを設けてもよい。 (7) Instead of the clip 30 of the first to sixth embodiments, for example, a U-shaped or C-shaped clip that is fitted from the side into the fitting cylinder part 14 and engaged with the outer circumferential groove 53M through the communication hole 16 is used. A clip may be provided and the clip may be provided with a pivotable engagement arm.

（８）また、係合アームをクリップと環状カバーの両方に備えてもよい。また、雌側配管継手の継手本体部に係合アームを設けて、クリップ及び環状カバーに係合アームを備えない構成としてもよい。さらには、係合アームを雄側配管継手に設けて、「嵌合筒部が正規嵌合位置に配置されていることを条件に、雌側配管継手の外側面に重なった状態で雌側配管継手の被係合部分に係合する」構成とすることも考えられる。 (8) Also, the engaging arm may be provided on both the clip and the annular cover. Alternatively, an engagement arm may be provided in the joint body of the female pipe joint, but the clip and the annular cover may not be provided with the engagement arm. Furthermore, an engagement arm is provided on the male side piping joint, and the female side piping is placed in a position overlapping the outer surface of the female side piping joint, provided that the mating cylinder part is placed in the normal mating position. It is also conceivable to adopt a configuration in which the joint is engaged with an engaged portion of the joint.

（９）前記第１～第６の実施形態では、環状カバー４０の正規スライド位置でクリップ３０の一部が環状カバー４０の突起受容部４１等を通して視認可能であったが、視認不能としてもよい。その場合、クリップ３０に突起３５を設けず、環状カバー４０に突起受容部４１を設けない構成としてもよいし、図２７に示した雌側配管継手１０Ｆのように、突起受容部４１に受容された突起３５を覆うカバー壁４６を環状カバー４０Ｆに備えた構成としてもよい。また、環状カバー４０にてクリップ３０の全体を覆うが、環状カバー４０を透明にしてその内側にクリップ３０が有るか否かを視認可能としてもよい。 (9) In the first to sixth embodiments, a part of the clip 30 is visible through the protrusion receiving portion 41 of the annular cover 40 at the normal sliding position of the annular cover 40, but it may be made invisible. . In that case, the clip 30 may not be provided with the protrusion 35 and the annular cover 40 may not be provided with the protrusion receiving part 41, or the projection receiving part 41 may be provided with the protrusion receiving part 41 as in the female piping joint 10F shown in FIG. The annular cover 40F may be provided with a cover wall 46 that covers the protrusion 35. Further, although the entirety of the clip 30 is covered with the annular cover 40, the annular cover 40 may be made transparent so that it is possible to visually confirm whether or not the clip 30 is present inside the annular cover 40.

（１０）本実施形態の継手本体部１１はＬ形になっていたが、直線状に延びたＩ形であってもよい。 (10) Although the joint main body portion 11 of this embodiment has an L shape, it may have an I shape extending linearly.

１０，１０Ａ～１０Ｆ 雌側配管継手
１４ 嵌合筒部
１５ クリップ収容溝
１６ 連通孔
３０，３０Ｄ クリップ
３５ 突起
４０，４０Ａ～４０Ｃ，４０Ｆ，４０Ｖ 環状カバー
４１，４１Ｖ 突起受容部
５０ 雄側配管継手
５０Ｆ フード部
５１Ｙ 嵌合管部
５３Ｍ 外周溝
７１，７０Ｖ，７１Ｗ 係合アーム
７１Ｘ 帯状板部
７２ 係止突起
７３ フック部
７４ 弾性ヒンジ部
７４Ｍ 溝部
１２０ ドレンホース 10, 10A to 10F Female side piping joint 14 Fitting tube part 15 Clip accommodation groove 16 Communication hole 30, 30D Clip 35 Projection 40, 40A to 40C, 40F, 40V Annular cover 41, 41V Projection receiving part 50 Male side piping joint 50F Hood part 51Y Fitting pipe part 53M Outer circumferential groove 71, 70V, 71W Engagement arm 71X Band-shaped plate part 72 Locking protrusion 73 Hook part 74 Elastic hinge part 74M Groove part 120 Drain hose

Claims (2)

配管の端部に固定される雌側配管継手と、相手側配管の端部に固定されて前記雌側配管継手に結合される雄側配管継手と、を備えてなる配管継手において、A piping joint comprising a female piping joint fixed to an end of a piping, and a male piping joint fixed to an end of a mating piping and coupled to the female piping joint,
前記雌側配管継手には、The female side piping joint has:
前記雄側配管継手の嵌合管部の外側に嵌合される嵌合筒部と、a fitting cylinder part fitted to the outside of the fitting pipe part of the male side piping joint;
前記嵌合筒部に形成されて、前記嵌合筒部が前記嵌合管部の正規嵌合位置まで嵌合されると前記嵌合管部の外周溝に対向する連通孔と、a communication hole formed in the fitting tube portion and facing an outer circumferential groove of the fitting tube portion when the fitting tube portion is fitted to the normal fitting position of the fitting tube portion;
前記嵌合筒部の外側に装着され、前記連通孔を通して前記外周溝に係合するクリップと、a clip attached to the outside of the fitting cylinder portion and engaging the outer circumferential groove through the communication hole;
前記嵌合筒部が前記正規嵌合位置に配置されていることを条件に、前記雄側配管継手の外側面に重なった状態で前記雄側配管継手の被係合部に係合する係合アームと、が備えられ、An engagement that engages with the engaged portion of the male piping joint while overlapping the outer surface of the male piping joint, provided that the fitting cylinder portion is placed in the normal mating position. An arm is provided,
前記雄側配管継手には、外側を断熱材で被覆された前記相手側配管としてのドレンホースの内側に挿入される挿入管部と、前記ドレンホースの外側に嵌合されるフード部とが備えられ、The male side piping joint includes an insertion pipe section that is inserted into the inside of the drain hose serving as the mating piping whose outside is covered with a heat insulating material, and a hood section that is fitted on the outside of the drain hose. is,
前記係合アームは、前記フード部の先端部の全周任意の位置に係合される配管継手。The engagement arm is a piping joint that is engaged at any position on the entire circumference of the tip of the hood. 前記係合アームには、前記フード部の先端部の内側に入り込んで係合するフック部が備えられている請求項１に記載の配管継手。2. The piping joint according to claim 1, wherein the engagement arm includes a hook portion that enters and engages inside the tip of the hood portion.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007292281A (en) 2006-03-27 2007-11-08 Jfe Pipe Fitting Mfg Co Ltd Pipe joint
JP2009092100A (en) 2007-10-04 2009-04-30 Jfe Pipe Fitting Mfg Co Ltd Pipe joint
JP2011106604A (en) 2009-11-19 2011-06-02 Evuc Kk Drain hose joint
JP2013242038A (en) 2012-04-27 2013-12-05 Nasco Fitting Kk Pipe fitting, closing valve and loosening tool
JP2018109422A (en) 2016-12-28 2018-07-12 Ｊｆｅ継手株式会社 Pipe joint

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2547411B2 (en) * 1975-10-23 1978-04-27 Armaturenfabrik Hermann Voss, 5290 Wipperfuerth Hose and / or pipe coupling
JPH0198793A (en) * 1987-10-09 1989-04-17 Hitachi Ltd Single-operating joint for connecting faucet
KR100727359B1 (en) * 2006-06-13 2007-06-13 주식회사 코닥트 A connector for a flexible hose

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007292281A (en) 2006-03-27 2007-11-08 Jfe Pipe Fitting Mfg Co Ltd Pipe joint
JP2009092100A (en) 2007-10-04 2009-04-30 Jfe Pipe Fitting Mfg Co Ltd Pipe joint
JP2011106604A (en) 2009-11-19 2011-06-02 Evuc Kk Drain hose joint
JP2013242038A (en) 2012-04-27 2013-12-05 Nasco Fitting Kk Pipe fitting, closing valve and loosening tool
JP2018109422A (en) 2016-12-28 2018-07-12 Ｊｆｅ継手株式会社 Pipe joint

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