JP2012219942A - Joint for piping and joint structure - Google Patents

Joint for piping and joint structure Download PDF

Info

Publication number
JP2012219942A
JP2012219942A JP2011087409A JP2011087409A JP2012219942A JP 2012219942 A JP2012219942 A JP 2012219942A JP 2011087409 A JP2011087409 A JP 2011087409A JP 2011087409 A JP2011087409 A JP 2011087409A JP 2012219942 A JP2012219942 A JP 2012219942A
Authority
JP
Japan
Prior art keywords
joint
pipe
piping
resin
ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2011087409A
Other languages
Japanese (ja)
Inventor
Kazunori Shibata
一範 柴田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Plastics Inc
Original Assignee
Mitsubishi Plastics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Plastics Inc filed Critical Mitsubishi Plastics Inc
Priority to JP2011087409A priority Critical patent/JP2012219942A/en
Publication of JP2012219942A publication Critical patent/JP2012219942A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Joints That Cut Off Fluids, And Hose Joints (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a joint for piping with a small number of parts composing the joint, capable of easily carrying out piping connection, and preventing breaking of the joint in piping connection, and to provide a joint structure using the joint for piping.SOLUTION: One end side of a joint 10 for piping is used as a piping connection part 11, and the other end side is used as a connection part 12 to equipment or the like. The piping connection part 11 of the joint 10 attached with a connecting tool 30 is rotated and pushed into a resin pipe 25. When an apical surface of the resin pipe 25 reaches a proximity of a circular collar part 14, further rotation is stopped for a while, it is checked whether an attitude of the connection part 12 to equipment or the like matches a receptor of an equipment side, and the attitude of the connection part 12 is fine-tuned by turning the joint 10 via the connecting tool 30 such that the attitude of the connection part 12 accurately matches an attitude of a receptor side.

Description

本発明は、樹脂管を接続する配管用継手と、該配管用継手に樹脂管を接続した継手構造に関する。   The present invention relates to a pipe joint for connecting a resin pipe and a joint structure in which a resin pipe is connected to the pipe joint.

合成樹脂よりなる合成樹脂管や、適宜の補強層を備えた補強層付き樹脂管（例えば中間層をアルミニウム合金層としその両側にポリエチレン層を積層した金属複合樹脂管）は、給水給湯配管やファンコイルユニットと冷温水管の接続などに広く用いられている。近年、給水給湯設備やファンコイルユニットは、省スペースや小型化が進み、該配管設備の配管においては、設置するスペースが小さくなり、より小スペースで施工可能な配管構造にする必要がある。   Synthetic resin pipes made of synthetic resin and resin pipes with reinforcement layers with appropriate reinforcement layers (for example, metal composite resin pipes with an intermediate layer made of an aluminum alloy layer and polyethylene layers laminated on both sides) are used for water supply and hot water supply pipes and fans Widely used for connecting coil units and cold / hot water pipes. In recent years, water supply and hot water supply facilities and fan coil units have been reduced in space and reduced in size, and in the piping of the piping facilities, it is necessary to reduce the installation space and to make a piping structure that can be constructed in a smaller space.

樹脂管の接続に用いられる管継手としては、圧縮式継手、締め込み式継手、差し込み式継手などがある。これらの継手の内、製品の単価、接続部の信頼性、施工性等を総合的に考慮して、圧縮式継手が用いられることが多い。圧縮式継手は管口径の大小によらず上記性能を安定的に発現する管継手である。   Examples of pipe joints used for connecting resin pipes include compression joints, tightening joints, and plug-in joints. Of these joints, compression joints are often used in consideration of the unit price of products, the reliability of connection parts, workability, and the like. The compression joint is a pipe joint that stably exhibits the above performance regardless of the pipe diameter.

第７図に従来の圧縮継手の一例を示す（特開２００６−１２５５２３）。この圧縮継手１は、筒状の本体部の外周に鍔状部７が一体に設けられ、この鍔状部７に圧縮リング６が嵌着されている。圧縮リング６は管接続部２と同軸状となっている。この管接続部２と該圧縮リング６との間の隙間に樹脂管Ｐを挿入し、圧縮リング６を専用工具を用いて圧縮（カシメ）する。そうすると、管接続部２の外周に装着された止水パッキン４に対し樹脂管Ｐの内面が強く押し付けられて、樹脂管Ｐが固定されると共に、止水性能が得られる。この従来例においては、圧縮リング６と配管用圧縮継手本体部とが別体である。圧縮リング６は、その基端側が鍔状部７の内周側の周回溝５にきつく嵌め込まれて配管用圧縮継手本体部に取り付けられている。   FIG. 7 shows an example of a conventional compression joint (Japanese Patent Laid-Open No. 2006-125523). In the compression joint 1, a flange portion 7 is integrally provided on the outer periphery of a cylindrical main body portion, and a compression ring 6 is fitted to the flange portion 7. The compression ring 6 is coaxial with the pipe connection 2. The resin pipe P is inserted into the gap between the pipe connecting portion 2 and the compression ring 6, and the compression ring 6 is compressed (caulked) using a dedicated tool. If it does so, the inner surface of the resin pipe P will be strongly pressed with respect to the water stop packing 4 with which the outer periphery of the pipe connection part 2 was mounted | worn, the resin pipe P will be fixed, and water stop performance will be acquired. In this conventional example, the compression ring 6 and the piping compression joint main body are separate. The compression ring 6 is attached to the compression joint main body for piping by fitting the proximal end of the compression ring 6 tightly into the circumferential groove 5 on the inner peripheral side of the flange 7.

この圧縮継手にあっては、圧縮リング６をカシメるために大きなカシメ工具が必要である。また、圧縮リングとしても、高価なステンレス製品を用いることが必要であり、コスト高である。   In this compression joint, a large crimping tool is required to crimp the compression ring 6. Further, it is necessary to use an expensive stainless steel product as the compression ring, which is expensive.

特開平１１−９４１６８（特許３３３３４３５）には、袋ナットを用いた袋ナット継手が記載されている。この袋ナット継手は、金属部が大きく材料費が高い。また、袋ナットを締め付けるために大きなトルクを掛ける必要があるなどの短所がある。   Japanese Patent Laid-Open No. 11-94168 (Patent 3333435) describes a cap nut joint using a cap nut. This cap nut joint has a large metal part and a high material cost. In addition, there is a disadvantage that it is necessary to apply a large torque to tighten the cap nut.

特開２０００−４６２８２（特許２９２０１４６）には、ロックリングを用いた継手が記載されているが、部品点数が多い。また、挿入を確認するために透明樹脂を設けたり、覗き穴を設けたりする必要がある。   Japanese Patent Laid-Open No. 2000-46282 (Patent No. 2920146) describes a joint using a lock ring, but has a large number of parts. In addition, it is necessary to provide a transparent resin or a peephole to confirm insertion.

特開２００７−２６３３７５には、先端側にＯリングが装着され、基端側外周面に螺旋溝が設けられた差し込み継手に管部材を差し込むことが記載されているが、施工上、Ｏリングははずれやすい構造であり、Ｏリングがずれた場合、規定の止水性能が得られない。また、Ｏリングがずれても確認することができない。   Japanese Patent Application Laid-Open No. 2007-263375 describes that a pipe member is inserted into an insertion joint in which an O-ring is attached to the distal end side and a spiral groove is provided on the outer peripheral surface of the proximal end side. The structure is easy to come off, and when the O-ring is slipped, the specified water stop performance cannot be obtained. Further, even if the O-ring is displaced, it cannot be confirmed.

特開２００６−１２５５２３号公報JP 2006-125523 A 特開平１１−９４１６８号公報JP-A-11-94168 特開２０００−４６２８２号公報JP 2000-46282 A 特開２００７−２６３３７５号公報JP 2007-263375 A

継手に樹脂管を接続する際、継手が回転しないように、かつ樹脂管を押し込む力に対しても耐えるようにして接続する必要があるが、継手の保持にスパナなどを用いると、樹脂管を押し込む力に対しては継手を保持することが難しい。   When connecting a resin pipe to the joint, it is necessary to connect the joint so that the joint does not rotate and withstand the force of pushing the resin pipe, but if a spanner or the like is used to hold the joint, the resin pipe It is difficult to hold the joint against the pushing force.

また、配管用継手に角度が付いている（例えばエルボ継手など）場合、樹脂管を回転しながら押し込んだ場合、継手に樹脂管を最後まで押し込んだ時の継手角度が目的方向からずれてしまうことがある。このような場合に、配管や継手に大きな力を加えて継手の向きを強引に調整しようとすると、継手に負荷がかかり、継手が破損するおそれがある。
また、従来例では、管部材を差し込んだときにＯリングが脱輪しても視覚することができなかった。 Also, if the piping joint has an angle (for example, elbow joint), when the resin pipe is pushed in while rotating, the joint angle when the resin pipe is pushed into the joint to the end will deviate from the target direction. There is. In such a case, if a large force is applied to the pipe or the joint to forcefully adjust the direction of the joint, a load is applied to the joint and the joint may be damaged.
Further, in the conventional example, even when the O-ring is removed when the pipe member is inserted, it cannot be visually observed.

本発明は、上記従来の問題点を解消し、継手を構成する部品点数が少なく、配管接続を簡単に行うことができ、配管接続に際して継手が壊れることも防止される配管用継手と、この配管用継手を用いた継手構造を提供することを目的とするものである。
また、本発明は、その一態様において、管部材の装着時にＯリングが脱輪した場合、これを視覚することができる継手構造を提供することを目的とする。 The present invention eliminates the above-mentioned conventional problems, reduces the number of parts constituting the joint, makes it easy to connect the pipe, and prevents the joint from being broken during the pipe connection. The object of the present invention is to provide a joint structure using a joint for industrial use.
Another object of the present invention is to provide a joint structure that can visually recognize when an O-ring is detached when a pipe member is attached.

請求項１の配管用継手は、一端側に配管接続部を有し、他端側に機器接続部を有し、該配管接続部に樹脂管が外嵌される配管用継手において、該配管接続部の先端側の外周面にＯリング装着溝が設けられ、基端側の外周面に、樹脂管の内周面を係止するための突部が設けられており、該配管接続部と機器接続部との間に鍔部が設けられ、該鍔部の外周面に凹穴が周方向に間隔をおいて複数個設けられていることを特徴とするものである。   The pipe joint according to claim 1 has a pipe connection part on one end side, an apparatus connection part on the other end side, and a pipe joint in which a resin pipe is fitted on the pipe connection part. An O-ring mounting groove is provided on the outer peripheral surface on the distal end side of the part, and a protrusion for locking the inner peripheral surface of the resin pipe is provided on the outer peripheral surface on the proximal end side. A flange portion is provided between the connecting portion and a plurality of concave holes are provided on the outer peripheral surface of the flange portion at intervals in the circumferential direction.

請求項２の配管用継手は、請求項１において、前記突部は、配管接続部の先端側に向って縮径するテーパ状斜面を有しており、該突部と前記鍔部との間が円筒面となっていることを特徴とするものである。   A joint for piping according to a second aspect is the joint according to the first aspect, wherein the protrusion has a tapered inclined surface whose diameter is reduced toward the distal end side of the pipe connecting portion, and between the protrusion and the flange portion. Is a cylindrical surface.

請求項３の配管用継手は、請求項１又は２において、該配管用継手の外面の色と前記Ｏリング装着溝に装着されるＯリングとの明度差が３以上であることを特徴とするものである。   The pipe joint according to claim 3 is characterized in that, in claim 1 or 2, the brightness difference between the color of the outer surface of the pipe joint and the O-ring mounted in the O-ring mounting groove is 3 or more. Is.

請求項４の配管用継手は、請求項１ないし３のいずれか１項において、前記鍔部と機器接続部との間に屈曲管部が存在することを特徴とするものである。   According to a fourth aspect of the present invention, there is provided a joint for piping according to any one of the first to third aspects, wherein a bent pipe portion exists between the flange portion and the device connecting portion.

請求項５の継手構造は、請求項１ないし４のいずれか１項の配管用継手と、該配管用継手の前記配管接続部に外嵌された樹脂管と、該樹脂管を外周から締め付け、樹脂管の内周面を前記突部に係止させているバンドとを備えてなるものである。   The joint structure according to claim 5 is the piping joint according to any one of claims 1 to 4, a resin pipe externally fitted to the pipe connection portion of the piping joint, and the resin pipe being tightened from the outer periphery. And a band for locking the inner peripheral surface of the resin tube to the protrusion.

本発明の配管用継手及び継手構造にあっては、配管接続部に樹脂管を外嵌させ、この樹脂管を外周からバンドによって締め付けるだけで配管用継手と樹脂管とが接続される。この配管接続部の先端側にはＯリングが設けられており、止水性が良好である。配管接続部の基端側には突部が設けられており、この突部が樹脂管の内周面に食い込むことにより、樹脂管の抜けが防止される。   In the pipe joint and joint structure of the present invention, the pipe joint and the resin pipe are connected by simply fitting a resin pipe to the pipe connection portion and tightening the resin pipe from the outer periphery with a band. An O-ring is provided on the distal end side of the pipe connection portion, and the water stoppage is good. A protrusion is provided on the base end side of the pipe connection portion, and the protrusion is bited into the inner peripheral surface of the resin tube, thereby preventing the resin tube from coming off.

本発明の配管用継手及び継手構造は、部品点数が少なく、構造もシンプルである。また、配管用継手に対する樹脂管の接続作業も簡単である。   The piping joint and joint structure of the present invention have a small number of parts and a simple structure. In addition, the connecting operation of the resin pipe to the piping joint is simple.

本発明では、突部と鍔部との間を円筒面としておくと、継手に屈曲管部が存在する場合、継手の向きを容易に調整することができる。
本発明では、配管用継手の外面の色と前記Ｏリング装着溝に装着されるＯリングとの明度差を３以上としておくと、管部材が透明又は半透明である場合、管部材を透してＯリングが脱輪していないかどうか視覚して確認することができる。 In the present invention, if a cylindrical surface is provided between the protrusion and the flange, the orientation of the joint can be easily adjusted when the joint has a bent pipe portion.
In the present invention, when the difference in brightness between the color of the outer surface of the joint for piping and the O-ring mounted in the O-ring mounting groove is set to 3 or more, when the pipe member is transparent or translucent, the tube member is transparent. It is possible to visually check whether the O-ring is not removed.

実施の形態に係る配管用継手の側面図である。It is a side view of the joint for piping concerning an embodiment. 図１の配管用継手の断面図である。It is sectional drawing of the coupling for piping of FIG. 図１のIII−III線断面図である。It is the III-III sectional view taken on the line of FIG. 配管接続作業に用いる接続工具の斜視図である。It is a perspective view of the connection tool used for piping connection work. 接続作業を説明する斜視図である。It is a perspective view explaining connection work. 実施の形態に係る配管用継手の拡大断面図である。It is an expanded sectional view of the joint for piping concerning an embodiment. 従来の配管用圧縮継手の断面図である。It is sectional drawing of the conventional compression joint for piping. 配管接続部の拡大断面図である。It is an expanded sectional view of a pipe connection part. 別の実施の形態に係る配管用継手の側面図である。It is a side view of the joint for piping concerning another embodiment. 図９のＸ−Ｘ線断面図である。FIG. 10 is a sectional view taken along line XX in FIG. 9.

以下、図面を参照して実施の形態について説明する。第１図は本発明の実施の形態に係る配管用継手１０の側面図、第２図はその断面図、第３図は第１図のIII−III線断面図である。第６図は配管接続部の拡大断面図である。   Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a side view of a pipe joint 10 according to an embodiment of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a sectional view taken along line III-III of FIG. FIG. 6 is an enlarged sectional view of the pipe connecting portion.

この配管用継手１０は、内孔１０ｈを有した略々筒状であり、その一端側が配管接続部１１となっており、他端側が機器接続部１２となっており、両者の間が約４５°の方向に屈曲した屈曲管部１３となっている。屈曲管部１３と配管接続部１１との間に円形鍔部１４が設けられている。屈曲管部１３と機器接続部１２との間にはフランジ１５が設けられている。   This pipe joint 10 is substantially cylindrical with an inner hole 10h, one end side thereof is a pipe connection part 11, the other end side is a device connection part 12, and the gap between the two is about 45. The bent tube portion 13 is bent in the direction of °. A circular flange 14 is provided between the bent pipe portion 13 and the pipe connection portion 11. A flange 15 is provided between the bent tube portion 13 and the device connection portion 12.

円形鍔部１４は、円形盤状であり、配管接続部１１及び屈曲管部１３より大径のフランジ形状となっている。この円形鍔部１４の外周面には複数の凹穴１４ａが設けられている。凹穴１４ａは、円形鍔部１４の周方向に一定間隔で複数個設けられている。   The circular flange 14 has a circular disk shape and has a flange shape larger in diameter than the pipe connection portion 11 and the bent pipe portion 13. A plurality of concave holes 14 a are provided on the outer peripheral surface of the circular flange 14. A plurality of the recessed holes 14 a are provided at regular intervals in the circumferential direction of the circular flange 14.

配管接続部１１の先端側の外周面にはＯリング１９（第２図）の装着溝１７が設けられ、基端側の外周面には、配管（この実施の形態では樹脂管）２５を係止するための突部１６が設けられている。   A mounting groove 17 for an O-ring 19 (FIG. 2) is provided on the outer peripheral surface on the distal end side of the pipe connecting portion 11, and a pipe (resin pipe in this embodiment) 25 is engaged on the outer peripheral surface on the proximal end side. A protrusion 16 for stopping is provided.

この実施の形態では、装着溝１７は１条設けられているが、２条以上であってもよい。通常は１〜３条程度が好適である。   In this embodiment, one mounting groove 17 is provided, but two or more mounting grooves 17 may be provided. Usually, about 1-3 is suitable.

突部１６は、配管接続部１１の外周を周回する螺旋凸条よりなる。第６図の通り、この突部１６の断面形状は、配管接続部１１の先端側に向って縮径するテーパ状である。突部１６と円形鍔部１４との間は円筒面１６ｂ（第６図）となっている。突部１６及び配管接続部１１の好適な形状については、後に第６図を参照して詳細に説明する。   The protrusion 16 is formed of a spiral ridge that goes around the outer periphery of the pipe connection portion 11. As shown in FIG. 6, the cross-sectional shape of the protrusion 16 is a taper shape that decreases in diameter toward the distal end side of the pipe connection portion 11. A cylindrical surface 16b (FIG. 6) is formed between the protrusion 16 and the circular flange 14. The preferred shapes of the protrusion 16 and the pipe connection portion 11 will be described in detail later with reference to FIG.

機器接続部１２にはＯリング装着溝２０が設けられ、Ｏリング２１が装着されている。フランジ１５の屈曲管部１３側には、円形鍔部１４と同一形状の円形盤部１５ａが一体に設けられている。この円形盤部１５ａの外径はフランジ１５よりも小径であるが、屈曲管部１３よりも大径である。円形盤部１５ａの外周面には、凹穴１４ａと同一形状、同一大きさ及び同一配列の凹穴１５ｂが設けられている。   The device connection portion 12 is provided with an O-ring mounting groove 20 and an O-ring 21 is mounted. On the bent tube portion 13 side of the flange 15, a circular disk portion 15a having the same shape as the circular flange portion 14 is integrally provided. The outer diameter of the circular disk portion 15 a is smaller than that of the flange 15, but larger than that of the bent tube portion 13. Concave holes 15b having the same shape, the same size, and the same arrangement as the concave holes 14a are provided on the outer peripheral surface of the circular disk portion 15a.

樹脂管２５は、この実施の形態では透明又は半透明の樹脂管よりなる。樹脂としてはポリオレフィン系が好適であり、具体的には架橋ポリエチレン、耐熱ポリエチレン、ポリブテンなどが好適である。   In this embodiment, the resin tube 25 is made of a transparent or translucent resin tube. As the resin, polyolefin is preferable, and specifically, crosslinked polyethylene, heat-resistant polyethylene, polybutene, and the like are preferable.

なお、配管用継手１０は真鍮などの銅合金製とされてもよく、樹脂製とされてもよいが、外面が白色系など明度の高いものが好ましい。   The pipe joint 10 may be made of a copper alloy such as brass or may be made of resin, but a pipe having a high brightness such as a white outer surface is preferable.

樹脂管２５を配管用継手１０に接続するには、各装着溝１７，２０にＯリング１９，２１を装着しておき、樹脂管２５を配管接続部１１にねじ込むようにして接続する。この接続に際しては、第４図及び第５図に示す接続工具３０を円形鍔部１４に装着し、継手１０を回転させながら樹脂管３０に配管接続部１１をねじ込む。   In order to connect the resin pipe 25 to the piping joint 10, the O-rings 19 and 21 are mounted in the mounting grooves 17 and 20, and the resin pipe 25 is screwed into the pipe connection portion 11. In this connection, the connecting tool 30 shown in FIGS. 4 and 5 is attached to the circular flange 14, and the pipe connecting portion 11 is screwed into the resin pipe 30 while rotating the joint 10.

この接続工具３０は、横長の略二等辺三角形型の板状であり、長辺の中間付近に切欠部３１が設けられている。この切欠部３１は、入口側が等幅の平行部３１ａであり、奥側は半円形部３１ｂとなっている。この半円形部３１ｂの内周面には複数個（この実施の形態では２個）の凸部３１ｃが設けられている。第２図及び第５図の通り、この切欠部３１を円形鍔部１４に外嵌させ、凸部３１ｃを凹穴１４ａに挿入する。これにより、接続工具３０を介して継手１０を回転させたり樹脂管２５に押し込んだりすることが可能となっている。   This connecting tool 30 is a horizontally long, isosceles triangular plate shape, and a notch 31 is provided near the middle of the long side. The cutout portion 31 is a parallel portion 31a having an equal width on the entrance side, and a semicircular portion 31b on the back side. A plurality (two in this embodiment) of convex portions 31c are provided on the inner peripheral surface of the semicircular portion 31b. As shown in FIGS. 2 and 5, the notch 31 is externally fitted to the circular flange 14, and the convex portion 31c is inserted into the concave hole 14a. Thereby, the joint 10 can be rotated or pushed into the resin pipe 25 via the connection tool 30.

第５図のように接続工具３０を装着した継手１０の配管接続部１１を樹脂管２５に回転させながら押し込む。そして、樹脂管２５の先端面が円形鍔部１４の直近にまで達したときにそれ以上の回転を一旦停止し、機器接続部１２の向きが機器側の受入口に合致するかチェックし、接続部１２の向きが正確に受入口側の向きに合うように接続工具３０を介して継手１０を回し、接続部１２の向きを微調整する。樹脂管２５の先端面が円形鍔部１４に当接する前に継手１０の回転を停止していたので、この微調整に際して継手１０をさらに樹脂管２５への押し込み方向に回転させることができる。   As shown in FIG. 5, the pipe connection part 11 of the joint 10 to which the connection tool 30 is attached is pushed into the resin pipe 25 while being rotated. Then, when the tip surface of the resin tube 25 reaches the position closest to the circular flange 14, the rotation further stops, and it is checked whether the orientation of the equipment connecting portion 12 matches the receiving port on the equipment side. The joint 10 is turned via the connection tool 30 so that the direction of the portion 12 is accurately aligned with the direction of the receiving port side, and the direction of the connection portion 12 is finely adjusted. Since the rotation of the joint 10 was stopped before the front end surface of the resin tube 25 contacted the circular flange 14, the joint 10 can be further rotated in the direction of pushing into the resin tube 25 during this fine adjustment.

接続部１２の向きの微調整が終了した後、継手１０から接続工具３０を取り外す。次いで、第８図に示すバンド４０を樹脂管２５の外周に装着し、樹脂管２５を締め付けてその内周面に突部１６を食い込ませる。なお、バンド４０は予め樹脂管２５の先端から所要距離（配管接続部１１の長さ）以上離隔した箇所に外嵌させておき、樹脂管２５を差し込んだ後、配管接続部１１の基端側まで移動させる。   After the fine adjustment of the direction of the connecting portion 12 is completed, the connecting tool 30 is removed from the joint 10. Next, the band 40 shown in FIG. 8 is attached to the outer periphery of the resin tube 25, the resin tube 25 is tightened, and the protrusion 16 is bitten into the inner peripheral surface thereof. The band 40 is externally fitted in advance at a position separated from the distal end of the resin tube 25 by a required distance (the length of the pipe connection portion 11), and after the resin tube 25 is inserted, the base end side of the pipe connection portion 11 is inserted. To move.

このバンド４０は、リング部４１と、該リング部４１の両端にそれぞれ設けられたつまみ部４２，４３とを有している。リング部１１の一端側にはスリット４４が周方向に延設され、リング部４１の他端側の小幅の舌片部４５が該スリット４４内に入り込んでいる。この舌片部４５の先端につまみ部４３が設けられている。つまみ部４２，４３はリング部４１の中心から離反する略々放射方向に立設されている。作業者がつまみ部４２，４３を指又は工具でつまんで接近方向に移動させることにより、リング部４１が拡径する。つまみ部４２，４３から指又は工具を離すと、リング部４１がそれ自身の弾性により縮径し、樹脂管２５が締め付けられる。   The band 40 includes a ring portion 41 and knob portions 42 and 43 provided at both ends of the ring portion 41, respectively. A slit 44 extends in the circumferential direction on one end side of the ring portion 11, and a small tongue piece portion 45 on the other end side of the ring portion 41 enters the slit 44. A knob portion 43 is provided at the tip of the tongue piece portion 45. The knob portions 42 and 43 are erected in a substantially radial direction away from the center of the ring portion 41. The operator pinches the knob portions 42 and 43 with a finger or a tool and moves the knob portions 42 and 43 in the approaching direction, thereby expanding the diameter of the ring portion 41. When a finger or a tool is released from the knob portions 42 and 43, the ring portion 41 is reduced in diameter by its own elasticity, and the resin tube 25 is tightened.

なお、第８図では、リング部４１は一重となっているが、二重環状となっている二重バンドを用いてもよい。   In FIG. 8, the ring portion 41 is single, but a double band having a double ring shape may be used.

このように樹脂管２５と接続された継手１０の機器接続部１２を機器側の受入口（図示略）に差し込む。図示は省略するが、この実施の形態では該受入口側にもフランジ１５と重なるフランジが設けられており、機器側のフランジと継手１０のフランジ１５とを重ね合わせ、配管接続クリップ（図示略）で両者を係合させることにより、継手１０と機器との接続が行われる。   In this way, the device connecting portion 12 of the joint 10 connected to the resin pipe 25 is inserted into a receiving port (not shown) on the device side. Although not shown, in this embodiment, a flange that overlaps the flange 15 is also provided on the receiving side, and the flange on the equipment side and the flange 15 of the joint 10 are overlapped to form a pipe connection clip (not shown). Then, the coupling 10 and the device are connected by engaging the two.

この実施の形態では、接続工具３０の凸部３１ｃを円形鍔部１４の凹穴１４ａに挿入するので、接続工具３０を介して継手１０に対し回転方向にもスラスト方向（押し込み方向）にも強く力を加えることができる。そのため、継手１０と樹脂管２５との接続を極めて容易に行うことができる。また、突部１６（ネジ部）を円形鍔部１４から若干離隔させて両者間に円筒面１６ｂを設けているので、接続部１１を樹脂管２５にねじ込むときに樹脂管２５の先端面が円形鍔部１４に突き当る前に継手１０の回転を停止させることができる。そのため、その後に継手１０の向きを容易に微調整することができる。   In this embodiment, since the convex part 31c of the connection tool 30 is inserted into the concave hole 14a of the circular flange 14, the joint tool 30 is strong against both the rotational direction and the thrust direction (push-in direction) with respect to the joint 10. You can apply power. Therefore, connection between the joint 10 and the resin pipe 25 can be performed very easily. Further, since the projecting portion 16 (screw portion) is slightly separated from the circular flange portion 14 and the cylindrical surface 16b is provided therebetween, the distal end surface of the resin tube 25 is circular when the connecting portion 11 is screwed into the resin tube 25. The rotation of the joint 10 can be stopped before hitting the flange 14. Therefore, the direction of the joint 10 can be easily finely adjusted thereafter.

配管接続部１１の好適な寸法例について第６図を参照して説明する。   A preferred dimension example of the pipe connecting portion 11 will be described with reference to FIG.

第６図の通り、配管接続部１１のうち、Ｏリング装着溝１７よりも奥側すなわち円形鍔部１４側の外径Ｄ１は前側すなわち先端側の外径Ｄ２よりも大きい。これは、配管接続部１１に配管３０を差し込むときにＯリング１９が脱輪しないようにするためである。Ｄ１とＤ２との差は０．１〜０．５ｍｍ特に０．１〜０．２ｍｍ程度が好ましい。 As shown in FIG. 6, the outer diameter D 1 on the back side of the O-ring mounting groove 17, that is, the circular flange portion 14 side, is larger than the outer diameter D 2 on the front side, that is, the front end side. This is to prevent the O-ring 19 from being removed when the pipe 30 is inserted into the pipe connecting portion 11. Difference between D 1 and D 2 are 0.1~0.5mm especially about 0.1~0.2mm are preferred.

突部１６は、配管接続部１１の外周を螺旋状に周回する凸条よりなる。隣接する突部１６同士の間は円筒面１６ａとなっている。このように円筒面１６ａを設けた場合、円筒面１６ａに樹脂管２５の内周面が接触し、止水性が向上する。   The protrusion 16 is formed of a ridge that spirals around the outer periphery of the pipe connection portion 11. A cylindrical surface 16a is formed between adjacent protrusions 16. When the cylindrical surface 16a is provided in this way, the inner peripheral surface of the resin tube 25 comes into contact with the cylindrical surface 16a, and the water stoppage is improved.

第６図では、突部１６は、配管用継手１０の軸心線方向の断面が三角形状であり、配管接続部１１の先端側が傾斜の緩い斜面となっており、後端側が該軸心線と垂直に近い急斜面となっている。この実施の形態では、図のθ１は好ましくは４５〜７０°特に好ましくは約６０°、θ２は好ましくは０〜４５°特に好ましくは約１５°である。合成樹脂製の配管用継手の場合、金属製の配管用継手に比べて角縁のシャープさが小さくなり、突部１６の樹脂配管への食いつきが甘くなり、配管３０が抜け易いので、上記のようにθ２を小さくして配管３０の抜けを防止するようにしている。突部１６同士の間のピッチＰは、１．５〜２ｍｍ程度が好ましい。突部の高さｈは０．３〜０．５ｍｍ程度が好ましい。 In FIG. 6, the protrusion 16 has a triangular section in the axial center direction of the pipe joint 10, the front end side of the pipe connecting part 11 is a slanted slope, and the rear end side is the axial center line. And it is a steep slope near the vertical. In this embodiment, θ 1 in the figure is preferably 45 to 70 °, particularly preferably about 60 °, and θ 2 is preferably 0 to 45 °, particularly preferably about 15 °. In the case of a synthetic resin pipe joint, the sharpness of the corner edge is smaller than that of a metal pipe joint, the biting of the protrusion 16 on the resin pipe is lessened, and the pipe 30 is easily removed. Thus, θ 2 is reduced to prevent the piping 30 from coming off. The pitch P between the protrusions 16 is preferably about 1.5 to 2 mm. The height h of the protrusion is preferably about 0.3 to 0.5 mm.

前述の通り、突部１６と円形鍔部１４との間は円筒面１６ｂとなっている。最も円形鍔部１４側の突部１６から円形鍔部１４までの距離は突部１６同士の間のピッチＰの１〜３倍、特に１．５〜２倍程度が好ましい。   As described above, the cylindrical surface 16b is formed between the protrusion 16 and the circular flange 14. The distance from the protrusion 16 on the most circular flange 14 side to the circular flange 14 is preferably 1 to 3 times, particularly about 1.5 to 2 times the pitch P between the protrusions 16.

この実施の形態において、屈曲管部１３を設けたのは、樹脂管２５を機器に接続する際の樹脂管２５の湾曲度合い（ベンド）を小さくするためである。継手がストレートであると、樹脂管が大曲となり施工スペースを多くとる必要がある。無理に施工すると、樹脂管が座屈してしまう。なお、継手に曲げ力が加わると樹脂製の継手は折れたり破損しやすくなるため、継手には軸方向にリブを付けてもよい。上記実施の形態では、屈曲管部１３は約４５°の屈曲角度となっているが、９０°など他の角度であってもよい。   In this embodiment, the bent pipe portion 13 is provided in order to reduce the degree of bending (bend) of the resin tube 25 when the resin tube 25 is connected to a device. If the joint is straight, the resin pipe becomes large and it is necessary to take a lot of construction space. If it is forcibly installed, the resin tube will buckle. In addition, when a bending force is applied to the joint, the resin joint is likely to be broken or damaged. Therefore, the joint may be provided with a rib in the axial direction. In the above-described embodiment, the bending tube portion 13 has a bending angle of about 45 °, but may be another angle such as 90 °.

第９図は９０°屈曲させた継手１０’の側面図、第１０図は第９図のＸ−Ｘ線断面図であり、屈曲管部１３’は９０°に屈曲している。なお、この実施の形態では、屈曲管部１３’にはリブ１３ｒが設けられている。また、この実施の形態では、凹穴１４ａ，１５ｂはそれぞれ互いに平行方向に凹設されている。その他の構成は第１図〜第５図の継手１０と同一であり、同一符号は同一部分を示している。   FIG. 9 is a side view of the joint 10 ′ bent 90 °, FIG. 10 is a cross-sectional view taken along line XX of FIG. 9, and the bent tube portion 13 ′ is bent 90 °. In this embodiment, a rib 13r is provided on the bent tube portion 13 '. Further, in this embodiment, the recessed holes 14a and 15b are respectively recessed in the parallel direction. Other configurations are the same as those of the joint 10 in FIGS. 1 to 5, and the same reference numerals indicate the same parts.

樹脂管２５は前述の通り透明又は半透明のものであるので、Ｏリング１９を透かして見ることができ、Ｏリング１９に脱輪が生じていないかチェックすることができる。Ｏリング１９の視認性を高くするために、継手１０を白色系など明度の高い色合いのものとするのが好ましい。Ｏリングと継手との明度差が３以上であると、Ｏリングの視認性が良好となる。   Since the resin tube 25 is transparent or semi-transparent as described above, the O-ring 19 can be seen through, and it can be checked whether or not the O-ring 19 has been removed. In order to increase the visibility of the O-ring 19, it is preferable that the joint 10 has a lightness such as white. When the lightness difference between the O-ring and the joint is 3 or more, the visibility of the O-ring is good.

なお、マンセル明度サンプルを使用し、樹脂管の上から目視による位置確認性能評価を行った。
評価は、「明確に確認できる：○」、「確認できる：△」、「確認難しい：×」とし、評価した結果を表１に示す。 In addition, the Munsell lightness sample was used and the position confirmation performance evaluation by visual observation was performed from the top of the resin tube.
The evaluation was “clearly confirmed: ○”, “can be confirmed: Δ”, “difficult to confirm: ×”, and the evaluation results are shown in Table 1.

Figure 2012219942
Figure 2012219942

表１の通り、明度差が３以上であれば、目視による確認が可能となり、特に５以上であればより好ましく確認可能である結果が得られた。   As shown in Table 1, when the lightness difference is 3 or more, visual confirmation is possible, and when it is 5 or more, the result can be confirmed more preferably.

１０，１０’ 継手
１１ 配管接続部
１２ 機器接続部
１３，１３’ 屈曲管部
１７，２０ Ｏリング装着溝
１６ 突部
１９，２１ Ｏリング
２５ 樹脂管
３０ 接続工具
３１ 切欠部
３１ｃ 凸部 DESCRIPTION OF SYMBOLS 10,10 'Joint 11 Pipe connection part 12 Equipment connection part 13, 13' Bending pipe part 17, 20 O-ring installation groove 16 Protrusion part 19, 21 O-ring 25 Resin pipe 30 Connection tool 31 Notch part 31c Convex part

Claims (5)

一端側に配管接続部を有し、他端側に機器接続部を有し、
該配管接続部に樹脂管が外嵌される配管用継手において、
該配管接続部の先端側の外周面にＯリング装着溝が設けられ、基端側の外周面に、樹脂管の内周面を係止するための突部が設けられており、該配管接続部と機器接続部との間に鍔部が設けられ、該鍔部の外周面に凹穴が周方向に間隔をおいて複数個設けられていることを特徴とする配管用継手。 It has a pipe connection on one end and a device connection on the other end,
In a pipe joint in which a resin pipe is fitted on the pipe connection part,
An O-ring mounting groove is provided on the outer peripheral surface on the distal end side of the pipe connecting portion, and a protrusion for locking the inner peripheral surface of the resin pipe is provided on the outer peripheral surface on the proximal end side. A piping joint, wherein a flange portion is provided between the first portion and the device connection portion, and a plurality of concave holes are provided on the outer peripheral surface of the flange portion at intervals in the circumferential direction. 請求項１において、前記突部は、配管接続部の先端側に向って縮径するテーパ状斜面を有しており、
該突部と前記鍔部との間が円筒面となっていることを特徴とする配管用継手。 In claim 1, the protrusion has a tapered slope that decreases in diameter toward the distal end side of the pipe connection portion,
A pipe joint characterized in that a cylindrical surface is formed between the protrusion and the flange. 請求項１又は２において、該配管用継手の外面の色と前記Ｏリング装着溝に装着されるＯリングとの明度差が３以上であることを特徴とする配管用継手。   3. The pipe joint according to claim 1, wherein the difference in brightness between the color of the outer surface of the pipe joint and the O-ring mounted in the O-ring mounting groove is 3 or more. 請求項１ないし３のいずれか１項において、前記鍔部と機器接続部との間に屈曲管部が存在することを特徴とする配管用継手。   The joint for piping according to any one of claims 1 to 3, wherein a bent pipe portion exists between the flange portion and the device connection portion. 請求項１ないし４のいずれか１項の配管用継手と、
該配管用継手の前記配管接続部に外嵌された樹脂管と、
該樹脂管を外周から締め付け、樹脂管の内周面を前記突部に係止させているバンドと
を備えてなる継手構造。 A joint for piping according to any one of claims 1 to 4,
A resin pipe externally fitted to the pipe connection part of the pipe joint;
A joint structure comprising: a band that tightens the resin tube from the outer periphery and holds the inner peripheral surface of the resin tube to the protrusion.
JP2011087409A 2011-04-11 2011-04-11 Joint for piping and joint structure Pending JP2012219942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011087409A JP2012219942A (en) 2011-04-11 2011-04-11 Joint for piping and joint structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011087409A JP2012219942A (en) 2011-04-11 2011-04-11 Joint for piping and joint structure

Publications (1)

Publication Number Publication Date
JP2012219942A true JP2012219942A (en) 2012-11-12

Family

ID=47271684

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011087409A Pending JP2012219942A (en) 2011-04-11 2011-04-11 Joint for piping and joint structure

Country Status (1)

Country Link
JP (1) JP2012219942A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106687731A (en) * 2014-08-04 2017-05-17 株式会社普利司通 Pipe joint
WO2019008882A1 (en) * 2017-07-05 2019-01-10 オリンパス株式会社 Connecting device

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59123716U (en) * 1983-02-08 1984-08-20 ナショナル住宅産業株式会社 Natsuto
JPH03396U (en) * 1989-05-25 1991-01-07
JPH03229094A (en) * 1989-12-01 1991-10-11 Hitachi Cable Ltd Hose joint and manufacture thereof
JPH0723815U (en) * 1993-09-30 1995-05-02 勇 小滝 Fastener
JPH1030613A (en) * 1996-07-17 1998-02-03 Osaka Gas Co Ltd Conduit operation jig
JP2000111066A (en) * 1998-10-07 2000-04-18 Tokyo Gas Co Ltd Mechanism for engaging joint engaging support with hard pipe and hard pipe connecting joint
JP2001295974A (en) * 2000-02-07 2001-10-26 Higashio Mech Co Ltd Pipe joint
JP2002139186A (en) * 2000-11-07 2002-05-17 Hoshipura:Kk Nipple made of synthetic resin
JP2004239412A (en) * 2003-02-07 2004-08-26 Tokai Rubber Ind Ltd Connection structure of resin tube and connection method of resin tube
JP2007263375A (en) * 2007-07-17 2007-10-11 Chiyoda Seisakusho:Kk Spigot joint
JP2009180311A (en) * 2008-01-31 2009-08-13 Bridgestone Corp Resin nipple for hose adapter and hose adapter connecting structure
WO2010001719A1 (en) * 2008-06-30 2010-01-07 株式会社 テスク Pipe joint for plastic resin pipe
JP2010169166A (en) * 2009-01-21 2010-08-05 Daikin Ind Ltd Bite type pipe connection structure, valve, bite type pipe joint, and refrigerating device

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59123716U (en) * 1983-02-08 1984-08-20 ナショナル住宅産業株式会社 Natsuto
JPH03396U (en) * 1989-05-25 1991-01-07
JPH03229094A (en) * 1989-12-01 1991-10-11 Hitachi Cable Ltd Hose joint and manufacture thereof
JPH0723815U (en) * 1993-09-30 1995-05-02 勇 小滝 Fastener
JPH1030613A (en) * 1996-07-17 1998-02-03 Osaka Gas Co Ltd Conduit operation jig
JP2000111066A (en) * 1998-10-07 2000-04-18 Tokyo Gas Co Ltd Mechanism for engaging joint engaging support with hard pipe and hard pipe connecting joint
JP2001295974A (en) * 2000-02-07 2001-10-26 Higashio Mech Co Ltd Pipe joint
JP2002139186A (en) * 2000-11-07 2002-05-17 Hoshipura:Kk Nipple made of synthetic resin
JP2004239412A (en) * 2003-02-07 2004-08-26 Tokai Rubber Ind Ltd Connection structure of resin tube and connection method of resin tube
JP2007263375A (en) * 2007-07-17 2007-10-11 Chiyoda Seisakusho:Kk Spigot joint
JP2009180311A (en) * 2008-01-31 2009-08-13 Bridgestone Corp Resin nipple for hose adapter and hose adapter connecting structure
WO2010001719A1 (en) * 2008-06-30 2010-01-07 株式会社 テスク Pipe joint for plastic resin pipe
JP2010169166A (en) * 2009-01-21 2010-08-05 Daikin Ind Ltd Bite type pipe connection structure, valve, bite type pipe joint, and refrigerating device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106687731A (en) * 2014-08-04 2017-05-17 株式会社普利司通 Pipe joint
WO2019008882A1 (en) * 2017-07-05 2019-01-10 オリンパス株式会社 Connecting device
JPWO2019008882A1 (en) * 2017-07-05 2019-07-04 オリンパス株式会社 Connection device and connection device set
US11497903B2 (en) 2017-07-05 2022-11-15 Olympus Corporation Connection device and connection device set

Similar Documents

Publication Publication Date Title
JP5311795B2 (en) Pipe fitting
WO2013168306A1 (en) Pipe joint
JP2005249183A (en) Female mounting assembling and joint assembly
WO2014045632A1 (en) Pipe joint structure
JP2013242039A (en) Pipe fitting and closing valve
JP2008025615A (en) Pipe joint
WO2013162006A1 (en) Pipe fitting and closing valve
JP2012219942A (en) Joint for piping and joint structure
JP2003097785A (en) Connection structure of resin pipe and joint
JP2010223347A (en) Resin pipe joint
JP5516011B2 (en) Piping joint and joint structure
JP2011127647A (en) Quick disconnection coupling for resin pipe
KR20150072991A (en) A connecting member for refrigerant pipes
JP6224805B2 (en) Pipe fitting and air conditioner
JP3189095B2 (en) Resin pipe fittings
JP5030493B2 (en) Housing type pipe fitting
JP2011027153A (en) Joint structure of flexible pipe
JP2011122698A (en) Housing type pipe joint
JP6276243B2 (en) Pipe fitting
US20080296892A1 (en) Extendable pipe union
WO2017029958A1 (en) Pipe joint, connection structure for pipes, and air conditioning device
WO2010018772A1 (en) Bite-type pipe connection structures and valves, bite-type pipe joints and freezers
JP4568630B2 (en) Pipe fitting
JP2007170464A (en) Protector for connection part of pipe
JP6754306B2 (en) Resin pipe fittings

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20131111

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20140827

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20140909

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20150120