JP5653411B2 - Coupling mechanism - Google Patents

Coupling mechanism Download PDF

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Publication number
JP5653411B2
JP5653411B2 JP2012274269A JP2012274269A JP5653411B2 JP 5653411 B2 JP5653411 B2 JP 5653411B2 JP 2012274269 A JP2012274269 A JP 2012274269A JP 2012274269 A JP2012274269 A JP 2012274269A JP 5653411 B2 JP5653411 B2 JP 5653411B2
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pin
engaging
pipe
engaging portion
convex
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JP2014119019A (en
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真吾 柘植
真吾 柘植
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Rinnai Corp
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Rinnai Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/12—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members
    • F16L37/14—Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain
    • F16L37/142—Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain where the securing element is inserted tangentially
    • F16L37/144—Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain where the securing element is inserted tangentially the securing element being U-shaped

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Description

本発明は、２本の配管を相互に連結する連結機構に関する。   The present invention relates to a connecting mechanism that connects two pipes to each other.

従来のこの種の連結機構として、例えば、２本の配管の内の一方の配管の端部にフランジ状の凸部を形成すると共に、他方の配管の端部にこの凸部が挿入される係合部を設け、凸部をこの係合部に挿入した状態で係合部にコ字状のピンを挿入し、一方の配管の凸部がこのピンに引っ掛かって係合部から凸部が抜けないようにしたものが知られている（例えば、特許文献１参照）。   As a conventional connecting mechanism of this type, for example, a flange-like convex portion is formed at the end of one of two pipes, and this convex portion is inserted into the end of the other pipe. Insert a U-shaped pin into the engaging part with the convex part inserted in this engaging part, and the convex part of one pipe is caught by this pin and the convex part comes out from the engaging part There is a known one (see, for example, Patent Document 1).

この連結構造では、上記ピンは略平行な１対の挿入部と両挿入部を相互に連結する連結部とから構成され、この連結部をＵ字状に湾曲させて、両挿入部を指でつまんでＵ字状部分を弾性変形させて両挿入部の間隔を縮めることにより、寸法の異なる複数の配管の連結に対応することができるように構成されている。また、挿入したピンが容易に脱落しないように、係合部の表面に突起を形成し、ピンのＵ字状部分をこの突起に係合させてピンが抜け方向に移動しないように構成されている。   In this connection structure, the pin is composed of a pair of substantially parallel insertion portions and a connection portion that connects the two insertion portions to each other. The connection portions are curved in a U-shape, and both insertion portions are held by fingers. By pinching and elastically deforming the U-shaped portion to reduce the distance between the two insertion portions, it is possible to cope with the connection of a plurality of pipes having different dimensions. Also, a protrusion is formed on the surface of the engaging portion so that the inserted pin does not easily fall off, and the U-shaped portion of the pin is engaged with this protrusion so that the pin does not move in the pulling direction. Yes.

特開２００６−１６１８２１号公報（段落００１３、００１４、図４）JP 2006-161821 (paragraphs 0013 and 0014, FIG. 4)

上記従来のものでは、係合部にピンを挿入した後、ピンのＵ字状部分を突起に係合させているが、この突起は係合部の表面から突出しているため工具や他のものがぶつかりやすく、このように外力が加わると破損するおそれがあり、突起が破損してしまうとピンが係合部から脱落してしまうことになる。また、係合部に一方の配管の凸部が挿入されていなくても係合部にピンを挿入することができるので、２本の配管が確実に連結されているのかいないのかという状況をピンの挿入状態から知ることができない。   In the above conventional device, after inserting the pin into the engaging portion, the U-shaped portion of the pin is engaged with the protrusion. However, since this protrusion protrudes from the surface of the engaging portion, a tool or other object is used. If the external force is applied in this manner, there is a risk of damage, and if the protrusion is damaged, the pin falls off the engaging portion. In addition, since the pin can be inserted into the engaging portion even if the convex portion of one pipe is not inserted into the engaging portion, the situation of whether the two pipes are securely connected or not I can not know from the inserted state.

そこで本発明は、上記の問題点に鑑み、突起などを係合部に設けなくてもピンの脱落が防止され、かつ、ピンの挿入状態から２本の配管が確実に連結されていることを確認することのできる連結機構を提供することを課題とする。   Therefore, in view of the above problems, the present invention is to prevent the pin from falling off without providing a protrusion or the like on the engaging portion, and to ensure that the two pipes are securely connected from the inserted state of the pin. It is an object to provide a coupling mechanism that can be confirmed.

上記課題を解決するために本発明による連結機構は、２本の配管を互いの端部で連結する連結構造であって、一方の配管の端部にフランジ状の凸部を形成すると共に、他方の配管の端部にこの凸部が挿入される係合部を設け、凸部をこの係合部に挿入した状態で係合部にコ字状のピンを挿入し、一方の配管の凸部がこのピンに係合して係合部から凸部が抜けないようにした連結構造において、上記ピンは略平行な１対の挿入部と両挿入部の基部側を相互に連結する連結部とから構成され、この連結部に両挿入部の間隔を広げる方向に付勢可能な弾性変形部を設けると共に、両挿入部の少なくとも一方に外側に湾曲した抜け止め部を形成し、上記係合部に凸部を挿入した状態でピンを係合部に挿入すると、抜け止め部が係合部の内部で係合部に係合してピンが係合部から脱落することを防止すると共に、係合部に凸部が挿入されていない状態で係合部にピンを挿入すると、上記弾性変形部が挿入部の基部側の間隔を広げることにより挿入部の先端が抜け止め部を支点として内側に揺動して、挿入部の先端が挿入部の挿入方向線上から外れ、ピンを係合部に完全に挿入できないようにしたことを特徴とする。   In order to solve the above-mentioned problem, the connecting mechanism according to the present invention is a connecting structure for connecting two pipes at the ends of one pipe, and forms a flange-like convex part at the end of one pipe and the other. An engaging portion into which the convex portion is inserted is provided at the end of the pipe, and a U-shaped pin is inserted into the engaging portion with the convex portion being inserted into the engaging portion. In the connection structure in which the protrusion engages with the pin so that the convex portion does not come out from the engagement portion, the pin includes a pair of substantially parallel insertion portions and a connection portion that connects the base sides of both insertion portions to each other. The connecting portion is provided with an elastically deformable portion that can be biased in the direction of widening the interval between the two insertion portions, and at least one of the insertion portions is formed with an outwardly curved retaining portion, and the engagement portion When the pin is inserted into the engaging portion with the convex portion inserted into the engaging portion, the retaining portion becomes the engaging portion inside the engaging portion. When the pin is inserted into the engaging portion in a state where the convex portion is not inserted into the engaging portion, the elastic deformation portion is moved to the base side of the inserting portion. By widening the interval, the tip of the insertion part swings inward with the retaining part as a fulcrum, so that the tip of the insertion part comes off from the insertion direction line of the insertion part, so that the pin cannot be completely inserted into the engagement part. It is characterized by that.

上記構成では、係合部の表面に突起を設けるのではなく、ピンの挿入部に抜け止め部を設けたので、抜け止め部が破損することによるピンの脱落が防止される。なお、この抜け止め部は外側に湾曲しており、抜け止め部を係合部に挿入していくと、挿入途中では挿入部全体が係合部に接触するのではなく抜け止め部が係合部に接触する。その状態で弾性変形部の付勢力によって挿入部の基部側が外側に開くと、挿入部の先端は抜け止め部を支点として内側に揺動しようとする。一方の配管が係合部に確実に装着されていると、挿入部の先端は一方の配管の外周面にガイドされて挿入部の先端が内側に揺動することなくそのまま挿入方向に進むことができるが、一方の配管が係合部に装着されていないと、挿入部の先端が内側に揺動するので挿入部の挿入方向線上から外れて途中で挿入部をそれ以上挿入できなくなる。   In the above configuration, the protrusion is not provided on the surface of the engaging portion, but the retaining portion is provided at the pin insertion portion, so that the pin is prevented from falling off due to breakage of the retaining portion. The retaining portion is curved outward, and when the retaining portion is inserted into the engaging portion, the retaining portion is not engaged with the engaging portion in the middle of the insertion, but the retaining portion is engaged. Touch the part. In this state, when the base side of the insertion portion is opened outward by the biasing force of the elastic deformation portion, the distal end of the insertion portion tends to swing inward with the retaining portion as a fulcrum. If one of the pipes is securely attached to the engaging portion, the distal end of the insertion portion is guided by the outer peripheral surface of the one piping, and the distal end of the insertion portion advances in the insertion direction as it is without swinging inward. However, if one of the pipes is not attached to the engaging portion, the distal end of the insertion portion swings inward, so that the insertion portion cannot be inserted any further in the middle of being detached from the insertion direction line of the insertion portion.

ところで、ピンの挿入部を係合部に挿入する際に上記弾性変形部の付勢力に抗してピンの間隔を縮めなければならないが、その際、容易に間隔を縮めるためには変形量を大きくすることが望ましい。ところが、変形量を大きくするためには連結部が長くなるので、上記弾性変形部は、連結部をトーションばね状に巻回して形成することが望ましい。   By the way, when the pin insertion portion is inserted into the engagement portion, the interval between the pins must be reduced against the urging force of the elastic deformation portion. In this case, in order to easily reduce the interval, the amount of deformation must be reduced. It is desirable to enlarge it. However, since the connecting portion becomes longer in order to increase the deformation amount, the elastic deformation portion is preferably formed by winding the connecting portion in a torsion spring shape.

以上の説明から明らかなように、本発明は、係合部に抜け止め用の突起などを設けることなくピンの脱落を防止することができ、かつピンに形成した抜け止め部の作用により、２本の配管が確実に連結された状態でなければピンを係合部に差し込めないので、ピンの状態から連結状態を確認することができる。   As is clear from the above description, the present invention can prevent the pin from falling off without providing a retaining projection or the like on the engaging portion, and the action of the retaining portion formed on the pin allows 2 Since the pin cannot be inserted into the engaging portion unless the pipe is securely connected, the connected state can be confirmed from the state of the pin.

本発明の一実施の形態の外観を示す斜視図The perspective view which shows the external appearance of one embodiment of this invention II-II断面図II-II sectional view ピンの形状を示す斜視図Perspective view showing pin shape IV-IV断面図IV-IV cross section ピンの挿入途中の状態を示す図Diagram showing the state during pin insertion 他の実施の形態の構成を示す図The figure which shows the structure of other embodiment.

図１および図２を参照して、１は本発明による連結機構の一例である。この連結機構１では２本の配管２、３を相互に連結するものであり、一方の配管３の上端部分を他方の配管２の下端に設けた係合部４に対して下方から挿入し、その状態で係合部４に対して水平方向からピン５を挿入して連結を完了するものである。係合部４には挿入用の穴４１が左右１対に設けられている。両穴４１は共に水平方向に拡がった長穴形状である。なお、３１がフランジ状の凸部であり、一方の配管３の先端部分にはＯリングからなるシール部材３２が装着されている。   1 and 2, 1 is an example of a connecting mechanism according to the present invention. In this connection mechanism 1, two pipes 2 and 3 are connected to each other, and the upper end portion of one pipe 3 is inserted from below into the engaging portion 4 provided at the lower end of the other pipe 2, In this state, the pin 5 is inserted into the engaging portion 4 from the horizontal direction to complete the connection. The engaging portion 4 is provided with a pair of insertion holes 41 on the left and right sides. Both holes 41 have a long hole shape that expands in the horizontal direction. In addition, 31 is a flange-shaped convex part, and the sealing member 32 which consists of an O-ring is attached to the front-end | tip part of one piping 3. As shown in FIG.

図３を参照して、ピン５は断面が円形の鋼材を曲げて形成されており、全体はほぼコ字状に形成されている。具体的には、１対の挿入部５１と両挿入部５１を相互に連結する連結部５２とから構成されている。また、両挿入部５１には各々外側に湾曲した抜け止め部５３が形成されている。また、連結部５２は複数回巻回され、トーションばね（弾性変形部）として機能するように形成されてる。   Referring to FIG. 3, the pin 5 is formed by bending a steel material having a circular cross section, and the whole is formed in a substantially U shape. Specifically, it is composed of a pair of insertion portions 51 and a connection portion 52 that connects both insertion portions 51 to each other. The insertion portions 51 are each formed with a retaining portion 53 that is curved outward. The connecting portion 52 is wound a plurality of times and is formed to function as a torsion spring (elastically deforming portion).

図４はこのピン５を係合部４に完全に挿入し、一方の配管３と他方の配管２とが確実に連結されている状態を示している。上述の穴４１は途中で切欠かれており、空間４２によって分断されている。ピン５が完全に差し込まれると抜け止め部５３がこの空間４２内に露出して点ｂに引っかかることにより、ピン５が自重や振動などで不用意に脱落することが防止される。また、挿入部５１は係合部４側の点ｂ、ｃと一方の配管３側の点ａとの３点で若干曲げられるので、その曲げ力の反作用として両挿入部５１は点ａで両側から一方の配管３をしっかりと挟んで保持するので、一方の配管３が係合部４内でがたつくことがない。   FIG. 4 shows a state where the pin 5 is completely inserted into the engaging portion 4 and the one pipe 3 and the other pipe 2 are securely connected. The above-described hole 41 is notched in the middle and is divided by the space 42. When the pin 5 is completely inserted, the retaining portion 53 is exposed in the space 42 and is caught at the point b, thereby preventing the pin 5 from being accidentally dropped due to its own weight or vibration. Further, since the insertion portion 51 is slightly bent at three points, points b and c on the engagement portion 4 side, and a point a on the one piping 3 side, both insertion portions 51 are on both sides at the point a as a reaction of the bending force. Therefore, the one pipe 3 is not rattled in the engaging portion 4.

図５を参照して、ピン５を挿入する過程について説明する。（ａ）は係合部４に一方の配管３が正規の位置に確実に挿入されている状態で挿入部５１を穴４１に挿入する途中の状態を示している。挿入部５１の先端５４は挿入途中で空間４２に露出すると進行方向について拘束されないので内側にずれようとする。ところが、内側には一方の配管３が存在しているので、上記点ａと点ｂとで挟まれて拘束された状態のまま点ｃに到達する。その時点では抜け止め部５３は穴４１内に入っていない。（ａ）に示す状態から挿入部５１を更に差し込んでいくと、抜け止め部５３が穴４１に入る際に挿入部５１が撓む。但し、その時点では挿入部５１は点ａ、ｂ、ｃで押さえられているので、先端５４はそのまま穴４１内を進んで反対側（図では下側）に突き出すことができる。   The process of inserting the pin 5 will be described with reference to FIG. (A) has shown the state in the middle of inserting the insertion part 51 in the hole 41 in the state by which one piping 3 was reliably inserted in the engagement part 4 in the regular position. If the distal end 54 of the insertion portion 51 is exposed to the space 42 during insertion, the distal end 54 is not constrained in the direction of travel and tends to shift inward. However, since one pipe 3 exists on the inner side, it reaches the point c while being sandwiched and restrained by the points a and b. At that time, the retaining portion 53 is not in the hole 41. When the insertion portion 51 is further inserted from the state shown in FIG. 5A, the insertion portion 51 bends when the retaining portion 53 enters the hole 41. However, since the insertion portion 51 is pressed at the points a, b, and c at that time, the distal end 54 can proceed through the hole 41 as it is and protrude to the opposite side (lower side in the figure).

これに対して、一方の配管３が係合部４に正規の状態で挿入されていないと、（ｂ）に示すように点ａが存在しないので挿入部５１が拘束されない。そして、抜け止め部５３が穴４１内に入ると、トーションばね状の連結部５２の作用により挿入部５１の基部５５が外側に拡がろうとするので、抜け止め部５３を支点として先端５４は内側に揺動する。そのため、挿入部５１を更に挿入しようとしても、先端５４が点ｄに衝突して（ｂ）に示す状態からそれ以上挿入部５１を押し込むことができなくなる。このように、ピン５を正規の位置まで挿入することができないので、ピン５の挿入状態を目視するだけで一方の配管３が係合部４に正規の状態で連結されていないことが認識できる。   On the other hand, if one pipe 3 is not inserted into the engaging portion 4 in a normal state, the insertion portion 51 is not restrained because the point a does not exist as shown in FIG. When the retaining portion 53 enters the hole 41, the base portion 55 of the insertion portion 51 tends to spread outward by the action of the torsion spring-like connecting portion 52, so that the distal end 54 is inward with the retaining portion 53 as a fulcrum. Rocks. Therefore, even if it is going to insert the insertion part 51 further, the front-end | tip 54 collides with the point d, and it becomes impossible to push the insertion part 51 further from the state shown in (b). As described above, since the pin 5 cannot be inserted to the proper position, it can be recognized that the one pipe 3 is not connected to the engaging portion 4 in the normal state only by visually observing the insertion state of the pin 5. .

上記実施の形態では、係合部４を他方の配管２に一体に形成したが、係合部４を別部材として形成し、他方の配管２に嵌着するようにしてもよい。その一例として、例えば図６に示すように係合部を２個の部材６１、６２で構成し、両部材６１、６２で他方の配管７を挟むように装着する。一方の部材６１に４個の爪６１ａが設けられており、他方の部材６２に合わせると、これら爪６１ａが他方の部材６２の段部６２ａに係合することにより両部材６１、６２が相互に連結される。なお、連結された状態の両部材６１、６２は他方の配管７に沿って上下に移動できるように配管７との間に若干の隙間を設けてもよく、あるいは隙間を設けずに配管７に固定されるようにしてもよい。   In the above embodiment, the engaging portion 4 is formed integrally with the other pipe 2. However, the engaging portion 4 may be formed as a separate member and fitted to the other pipe 2. As an example, for example, as shown in FIG. 6, the engaging portion is composed of two members 61 and 62, and the two members 61 and 62 are mounted so as to sandwich the other pipe 7. Four claws 61a are provided on one member 61. When the claws 61a are combined with the other member 62, the claws 61a engage with the stepped portion 62a of the other member 62, so that the two members 61 and 62 are mutually connected. Connected. It should be noted that the connected members 61 and 62 may be provided with a slight gap between them so that they can move up and down along the other pipe 7, or in the pipe 7 without providing a gap. It may be fixed.

なお、上記図１から図５に示した構成では、シール部材３２を一方の配管３と係合部４との間に配設したが、本実施の形態では他方の配管７の端部に拡径部７１を形成し、その拡径部７１内にシール部材８２を挿入するようにした。シール部材８２は一方の配管８の円筒部分にプレス成形されたフランジ（凸部に相当）８１にサポートされて拡径部７１内に挿入される。   In the configuration shown in FIGS. 1 to 5, the seal member 32 is disposed between the one pipe 3 and the engaging portion 4. However, in this embodiment, the seal member 32 is expanded to the end of the other pipe 7. The diameter portion 71 was formed, and the seal member 82 was inserted into the enlarged diameter portion 71. The seal member 82 is supported by a flange (corresponding to a convex portion) 81 press-molded in the cylindrical portion of one pipe 8 and is inserted into the enlarged diameter portion 71.

図６に示した構成では他方の配管とは別部材で構成した係合部を２つの部材６１、６２で形成したが、他方の配管とは別部材の係合部を２部材で構成するのではなく１部材で形成しても全く問題はない。   In the configuration shown in FIG. 6, the engaging portion constituted by a member different from the other pipe is formed by two members 61 and 62, but the engaging portion of a member different from the other pipe is constituted by two members. However, there is no problem even if it is formed by one member.

なお、本発明は上記した形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々の変更を加えてもかまわない。   In addition, this invention is not limited to an above-described form, You may add a various change in the range which does not deviate from the summary of this invention.

１ 連結機構
２ （他方の）配管
３ （一方の）配管
４ 係合部
５ ピン
７ （他方の）配管
８ （一方の）配管
４１ 穴
５１ 挿入部
５２ 連結部（弾性変形部）
５３ 抜け止め部
６１ 部材 DESCRIPTION OF SYMBOLS 1 Connection mechanism 2 (Other) piping 3 (One) piping 4 Engagement part 5 Pin 7 (Other) piping 8 (One) piping 41 Hole 51 Insertion part 52 Connection part (elastic deformation part)
53 Retaining part 61 Member

Claims (2)

２本の配管を互いの端部で連結する連結構造であって、一方の配管の端部にフランジ状の凸部を形成すると共に、他方の配管の端部にこの凸部が挿入される係合部を設け、凸部をこの係合部に挿入した状態で係合部にコ字状のピンを挿入し、一方の配管の凸部がこのピンに係合して係合部から凸部が抜けないようにした連結構造において、上記ピンは略平行な１対の挿入部と両挿入部の基部側を相互に連結する連結部とから構成され、この連結部に両挿入部の間隔を広げる方向に付勢可能な弾性変形部を設けると共に、両挿入部の少なくとも一方に外側に湾曲した抜け止め部を形成し、上記係合部に凸部を挿入した状態でピンを係合部に挿入すると、抜け止め部が係合部の内部で係合部に係合してピンが係合部から脱落することを防止すると共に、係合部に凸部が挿入されていない状態で係合部にピンを挿入すると、上記弾性変形部が挿入部の基部側の間隔を広げることにより挿入部の先端が抜け止め部を支点として内側に揺動して、挿入部の先端が挿入部の挿入方向線上から外れ、ピンを係合部に完全に挿入できないようにしたことを特徴とする連結機構。   A connection structure in which two pipes are connected to each other at the end, and a flange-like protrusion is formed at the end of one pipe, and the protrusion is inserted into the end of the other pipe. Insert a U-shaped pin into the engaging part with the convex part inserted into this engaging part, and the convex part of one pipe engages with this pin and protrudes from the engaging part In the connection structure that prevents the pins from being removed, the pin is composed of a pair of substantially parallel insertion portions and a connection portion that connects the base sides of both insertion portions to each other. An elastically deformable portion that can be urged in the spreading direction is provided, and a retaining portion that is curved outward is formed on at least one of the two insertion portions, and the pin is used as the engagement portion with the convex portion inserted into the engagement portion. When inserted, the retaining portion engages with the engaging portion inside the engaging portion to prevent the pin from dropping from the engaging portion. In addition, when the pin is inserted into the engaging portion without the convex portion being inserted into the engaging portion, the elastic deformation portion widens the gap on the base side of the inserting portion, so that the distal end of the inserting portion serves as a fulcrum. The coupling mechanism is characterized in that the tip of the insertion portion is disengaged from the insertion direction line of the insertion portion so that the pin cannot be completely inserted into the engagement portion. 上記弾性変形部は、連結部をトーションばね状に巻回して形成したものであることを特徴とする請求項１に記載の連結構造。   The connection structure according to claim 1, wherein the elastic deformation portion is formed by winding the connection portion in a torsion spring shape.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014132184A (en) * 2013-01-07 2014-07-17 Rinnai Corp Connecting mechanism

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Publication number Priority date Publication date Assignee Title
JP6916019B2 (en) * 2017-03-28 2021-08-11 日鉄建材株式会社 Temporary fixing pin for perforated pipe and construction method for multi-stage drainage pipe using it

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JPS5223718U (en) * 1975-08-08 1977-02-19
JPS5238718U (en) * 1975-09-12 1977-03-18
JPH0628484U (en) * 1992-09-14 1994-04-15 株式会社トヨックス Civil engineering hose
DE19737704C2 (en) * 1997-08-29 2002-10-24 Behr Gmbh & Co Pipe connection, in particular for connecting a pipe to a motor vehicle heat exchanger
JP4703044B2 (en) * 2001-07-05 2011-06-15 株式会社パイオラックス Spigot fitting
JP4299014B2 (en) * 2002-07-31 2009-07-22 株式会社ケーブイケー Pipe fitting
JP2004162787A (en) * 2002-11-12 2004-06-10 Denso Corp Pipe connection device
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014132184A (en) * 2013-01-07 2014-07-17 Rinnai Corp Connecting mechanism

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