JP2009222107A

JP2009222107A - Housing pipe joint

Info

Publication number: JP2009222107A
Application number: JP2008065785A
Authority: JP
Inventors: Shuichi Mikami; 修市三上
Original assignee: Riken Corp
Current assignee: Riken Corp
Priority date: 2008-03-14
Filing date: 2008-03-14
Publication date: 2009-10-01

Abstract

<P>PROBLEM TO BE SOLVED: To provide a housing pipe joint with a check part for allowing accurate and easy confirmation that mating faces of circular arc portions of housing bodies adequately abut on each other and construction is correctly completed. <P>SOLUTION: The housing pipe joint 1 includes a plurality of split housing bodies 3 and a fastener 7 consisting of a bolt 8 and a nut 9 for fixing the housing bodies 3. A construction check member 10 is arranged on the bolt 8 at a site between flange portions 5 of both housing bodies 3. The construction check member 10 has an outside cylindrical member 11 and an inside cylindrical member 12, and the outer peripheral face at the front end of the inside cylindrical member 12 is a colored portion 12c colored with fluorescent paint and enters into the outside cylindrical member 11. In the state that a clearance is open between the mating faces 4b of the housing bodies 3, the colored portion 12c of the inside cylindrical member 12 is exposed. The bolt 8 and the nut 9 are fastened to each other until the mating faces 4b abut on each other, and then the colored portion 12c completely enters into a cylindrical portion 11a and disappears from the outside. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、接続される２本の管（水道管など）の端部同士を突き合わせて接続して固定するハウジング形管継手に関する。特には、施工が正しく完了したことを確認できるよう改良を加えたハウジング形管継手に関する。 The present invention relates to a housing-type pipe joint for connecting and fixing the ends of two pipes to be connected (water pipes or the like). In particular, the present invention relates to a housing-type pipe joint that has been improved so that it can be confirmed that construction has been completed correctly.

ハウジング形管継手の一例を説明する。
図１３は、従来のハウジング形管継手の構造の一例を示す図であり、図１３（Ａ）は横断面図、図１３（Ｂ）は縦断面図である。
接続される２本の管の端部に配置されるハウジング形管継手１は、環状のガスケット６と、複数割り（この例では２つ割り）にされたハウジング本体３と、これらのハウジング本体３を締め付け固定する締結具７とを備える。ハウジング本体３は、内周面にガスケット６を収納する円弧状の溝４ａと２本の管の端部外面に形成された円周溝Ｐａに当接する内縁部３ａを備えた円弧部４、及び、この円弧部４の端部において外方向に突出するフランジ部５を有する。締結具７は、隣接するハウジング本体３の相対するフランジ部５を締め付け固定するもので、ボルト８とナット９からなる。 An example of a housing type pipe joint will be described.
13A and 13B are diagrams showing an example of the structure of a conventional housing-type pipe joint. FIG. 13A is a transverse sectional view, and FIG. 13B is a longitudinal sectional view.
A housing-type pipe joint 1 disposed at the ends of two pipes to be connected includes an annular gasket 6, a housing body 3 divided into a plurality of parts (in this example, two parts), and these housing bodies 3 And a fastener 7 for fastening and fixing. The housing body 3 has an arcuate portion 4 having an arcuate groove 4a for accommodating the gasket 6 on the inner peripheral surface and an inner edge portion 3a that abuts on a circumferential groove Pa formed on the outer surface of the ends of the two tubes. The flange portion 5 protrudes outward at the end of the arc portion 4. The fastener 7 is configured to fasten and fix the opposing flange portions 5 of the adjacent housing main body 3, and includes a bolt 8 and a nut 9.

このようなハウジング形管継手１で２本の管Ｐを接続する際は、まず、２本の管Ｐのそれぞれの端部に円周溝Ｐａを形成し、仮組みされたハウジング形管継手1のボルト８及びナット９をハウジング本体３から一旦取り外し、管端部を突き合わせて両管の端部を跨ぐように環状のガスケット６を嵌める。そして、一組のハウジング本体３をガスケット６の上から管接続部に被せる。管Ｐの端部外周の円周溝Ｐａにハウジング本体３の内縁部３ａを充てがうことにより、ハウジング本体３が管Ｐの長手方向において位置決めされる。その後、ハウジング本体３の対向するフランジ部５同士をボルト８とナット９で締め付け固定する。この際、ハウジング形管継手と管Ｐとが正しく施工がされずにハウジング本体３の組み付けや締結具７の締め付けが適正に行われていない施工不良が起こると、水漏れや脱管が発生するなど大きな問題となる。 When connecting two pipes P with such a housing type pipe joint 1, first, a circumferential groove Pa is formed at each end of the two pipes P, and the temporarily assembled housing type pipe joint 1. The bolts 8 and nuts 9 are once removed from the housing body 3, and the annular gasket 6 is fitted so that the pipe ends are butted and straddling the ends of both pipes. Then, a set of housing main bodies 3 is placed on the pipe connecting portion from above the gasket 6. The housing body 3 is positioned in the longitudinal direction of the pipe P by filling the circumferential edge Pa of the outer periphery of the pipe P with the inner edge 3 a of the housing body 3. Thereafter, the opposing flange portions 5 of the housing body 3 are fastened and fixed with bolts 8 and nuts 9. At this time, if the housing-type pipe joint and the pipe P are not properly installed and the housing body 3 is not properly assembled and the fastener 7 is not properly tightened, a leakage of water or pipe removal may occur. It becomes a big problem.

このような組み付けや締め付けによる施工不良を防止するために、正しく施工が完了したことを作業者が容易に確認するための対策が提案されている（例えば、特許文献１、特許文献２参照）。
特許文献１には、ハウジング本体の円弧部に、管軸方向に突出する突部を設け、この突部に管の外周面に密接する円弧状の取付位置検出部を形成する方法が開示されている。この取付位置検出部と管外周との間にスキマが開いている場合は、ハウジング本体の内縁部３ａが管の端部外面の円周溝Ｐａに正しく組み付けられていないことになる。作業員は、このスキマの有無を目視で確認することにより、正しく施工が完了したかどうかを判断している。しかし、この場合、施工現場が地下や屋内などの暗所の場合や、作業を行いにくい狭い場所や高い場所の場合、目視では確認しづらい場合がある。 In order to prevent such a construction failure due to assembly or tightening, measures have been proposed for an operator to easily confirm that the construction has been completed correctly (see, for example, Patent Document 1 and Patent Document 2).
Patent Document 1 discloses a method in which a projecting portion protruding in the tube axis direction is provided on the arc portion of the housing body, and an arc-shaped attachment position detecting portion that is in close contact with the outer peripheral surface of the tube is formed on the projecting portion. Yes. When the clearance is open between the attachment position detecting portion and the outer periphery of the tube, the inner edge portion 3a of the housing body is not correctly assembled in the circumferential groove Pa on the outer surface of the end portion of the tube. The worker determines whether or not the construction has been completed correctly by visually confirming the presence or absence of the clearance. However, in this case, when the construction site is in a dark place such as underground or indoors, or in a narrow place or a high place where the work is difficult to perform, it may be difficult to visually confirm.

特許文献２には、ハウジング本体のフランジ部の外側とボルトのヘッドとの間、又は、フランジ部の外側とナットとの間に、一対の皿座金を介在させる方法が開示されている。皿座金は、テーパ状の凸面を対向するように配置されており、この凸面が蛍光塗料などで着色されている。ボルトとナットを締め付けると、皿座金が座屈し、完全に締め付けられると対向する皿座金が完全に密着して着色部が覆い隠される。着色部が目視で確認されなければ、ボルトとナットの締め忘れや締め付け不足がなく、正しく締め付けられていることになる。 Patent Document 2 discloses a method in which a pair of counter washers are interposed between the outside of the flange portion of the housing body and the head of the bolt, or between the outside of the flange portion and the nut. The dish washer is arranged so as to face the tapered convex surface, and this convex surface is colored with a fluorescent paint or the like. When the bolt and nut are tightened, the dish washer buckles, and when completely tightened, the opposing dish washer completely adheres to cover the colored portion. If the colored portion is not visually confirmed, the bolt and nut are not forgotten to be tightened or insufficiently tightened, and the bolt is properly tightened.

特開２００３−４２３６０JP 2003-42360 A 特開２００１−１６５３６７JP 2001-165367 A

上記の組み付けや締め付けによる施工不良の発生原因の一つとして、ガスケットの挟み込みが挙げられる。図１４は、施工不良の例を説明する図である。図１４（Ａ）は、上下のハウジング本体３の合わせ面４ｂ間にガスケット６が挟まれた例を示している。この場合、挟み込まれたガスケット６によって、円弧部４の合わせ面４ｂ間は適正に当接できない。
図１４（Ｂ）は、ガスケット６が管Ｐの長さ方向に位置ずれして、一部が管端部の円周溝Ｐａとハウジング本体３の内縁部３ａに挟み込まれた例を示している。この場合も、挟み込まれたガスケット６によって、ハウジング本体３の内縁部３ａが円周溝から浮いた状態となり、円弧部４の合わせ面４ｂ間が適正に当接できない。
しかしながら、施工現場が地下や屋内などの暗所の場合や、作業を行いにくい狭い場所や高い場所の場合に、特許文献１に記載された取付位置検出部と管外周との間のスキマを作業者が目視で容易に確認することはできない。
また、特許文献２記載の手段では、図１４で示したようなガスケットがフランジ部間に挟まれて、ハウジング本体３の合わせ面４ｂが閉じていない場合でも、ボルト８とナット９とが締め付けられると、皿座金が座屈し着色部が覆い隠されることになる。つまり、この方法ではボルトとナットとが締め付けられていることは確認できても、ハウジング本体３の合わせ面４ｂが適正に当接し、正しく施工が完了しているかどうかを確認するものではない。 One of the causes of construction failure due to the above assembly and tightening is the sandwiching of the gasket. FIG. 14 is a diagram illustrating an example of a construction failure. FIG. 14A shows an example in which the gasket 6 is sandwiched between the mating surfaces 4 b of the upper and lower housing bodies 3. In this case, due to the sandwiched gasket 6, the mating surfaces 4 b of the arcuate portion 4 cannot be properly abutted.
FIG. 14B shows an example in which the gasket 6 is displaced in the length direction of the pipe P and a part thereof is sandwiched between the circumferential groove Pa at the pipe end and the inner edge 3 a of the housing body 3. . Also in this case, the sandwiched gasket 6 causes the inner edge portion 3a of the housing body 3 to float from the circumferential groove, and the mating surfaces 4b of the arc portions 4 cannot be properly in contact with each other.
However, when the construction site is in a dark place such as underground or indoors, or in a narrow place or high place where it is difficult to perform work, the clearance between the mounting position detection unit and the outer periphery of the pipe described in Patent Document 1 is worked. It cannot be easily confirmed visually by a person.
In the means described in Patent Document 2, the bolt 8 and the nut 9 are tightened even when the gasket as shown in FIG. 14 is sandwiched between the flange portions and the mating surface 4b of the housing body 3 is not closed. Then, the plate washer buckles and the colored portion is covered. That is, in this method, even if it can be confirmed that the bolt and the nut are tightened, it does not confirm whether the mating surface 4b of the housing main body 3 is in proper contact and the construction is correctly completed.

本発明は上記の問題点に鑑みてなされたものであって、ハウジング本体の円弧部の合わせ面間が適正に当接し、正しく施工が完了したことを正確にかつ容易に確認できる確認部を備えたハウジング形管継手を提供することを目的とする。 The present invention has been made in view of the above-described problems, and includes a confirmation unit that can accurately and easily confirm that the mating surfaces of the arc portions of the housing main body are in proper contact with each other and that the construction has been correctly completed. It is an object of the present invention to provide a housing type pipe joint.

本発明のハウジング形管継手は、接続する２本の管の端部外面に当接するガスケットと、複数割りにされた円弧部及び該円弧部の端部において外方向に突出するフランジ部を有するハウジング本体と、前記複数のハウジング本体の相対するフランジ部同士を締め付け固定する締結具と、を含むハウジング形管継手であって、前記ハウジング本体の間に配され、継手接続完了時におけるハウジング本体間の適正な相対位置を示す施工確認部を備えることを特徴とする。前記の施工確認部は、ハウジング形管継手を構成するガスケット、ハウジング本体、締結具に部分的に設けることができる。また、前記ハウジング形管継手の構成部品に加え、新たに施工確認部材としてさらに備えることもできる。 The housing-type pipe joint of the present invention includes a gasket that abuts against the outer surface of the ends of two pipes to be connected, a plurality of divided arc portions, and a flange portion that protrudes outward at the ends of the arc portions. A housing-type pipe joint that includes a main body and a fastener that fastens and fixes the opposing flange portions of the plurality of housing main bodies, and is disposed between the housing main bodies and between the housing main bodies when the joint connection is completed It is characterized by having a construction confirmation part showing an appropriate relative position. The said construction confirmation part can be partially provided in the gasket, housing main body, and fastener which comprise a housing type pipe joint. In addition to the components of the housing-type pipe joint, it can be further provided as a construction confirmation member.

前述の特許文献２の締付け表示装置は、締結具（ボルトとナット）の締め付け度合いを表示するものであって、ハウジング本体の相対的位置を確認するものではない。一方、本発明では、施工確認部が、相対するハウジング本体の位置関係を示すので、適正な施工が完了したことを簡単かつ正確に確認できる。 The above-described tightening display device of Patent Document 2 displays the degree of tightening of fasteners (bolts and nuts), and does not confirm the relative position of the housing body. On the other hand, in this invention, since a construction confirmation part shows the positional relationship of the housing body which opposes, it can confirm easily and correctly that appropriate construction was completed.

本発明においては、前記施工確認部に、目視確認可能な表示部が設けられており、継手の接続が完了して前記ハウジング本体同士が正確に固定されて施工が完了したときに、前記表示部が見えなくなることとすれば、作業者が一目で施工が正常に完了したことを確認できる。 In the present invention, the construction confirmation part is provided with a display part that can be visually confirmed, and when the connection of the joint is completed and the housing bodies are accurately fixed and construction is completed, the display part If it becomes invisible, an operator can confirm that construction was completed normally at a glance.

さらに、本発明においては、前記表示部が蛍光性を有することとすれば、暗所でも目視で確認できるので、作業者が施工現場で容易に施工完了確認を行える。 Furthermore, in this invention, if the said display part shall have fluorescence, since it can confirm visually also in a dark place, an operator can confirm construction completion easily at a construction site.

本発明においては、前記複数に分割されたハウジング本体の相対する合わせ面の間隔と、前記表示部の長さとが連動しており、前記間隔がゼロになったときに、前記表示部の長さもゼロとなることが好ましい。 In the present invention, the interval between the opposing mating surfaces of the housing body divided into a plurality of the lengths of the display unit is interlocked, and when the interval becomes zero, the length of the display unit is also It is preferably zero.

本発明においては、前記施工確認部が、前記ハウジング本体の前記フランジ部間の前記締結具の外周に配されていることが好ましい。 In this invention, it is preferable that the said construction confirmation part is distribute | arranged to the outer periphery of the said fastener between the said flange parts of the said housing main body.

ハウジング本体の向かい合ったフランジ部間の間隔が変わると、締結具のフランジ部間の部分の長さが変わる。そこで、締結具のフランジ部間に施工確認部材を外嵌させると、フランジ部間の間隔が変わったときに、施工確認部材が、締結具のフランジ部間の部分の長さの変化を受ける。この変化を、施工確認部材の変化として表すことにより、施工確認部材でフランジ部の間隔を知ることができる。 When the distance between the opposing flange portions of the housing body changes, the length of the portion between the flange portions of the fastener changes. Therefore, when the construction confirmation member is externally fitted between the flange portions of the fastener, the construction confirmation member receives a change in the length of the portion between the flange portions of the fastener when the interval between the flange portions is changed. By expressing this change as a change in the construction confirmation member, the interval between the flange portions can be known by the construction confirmation member.

以上の説明から明らかなように、本発明によれば、ハウジング形管継手の相対するハウジング本体間の間隔の変化を、施工確認部の変化として示しているので、ハウジング本体の位置関係（ハウジング本体の円弧部間又はフランジ部間の間隔）を簡単かつ正確に確認することができる。さらに、表示部材が蛍光性を有しているので、暗所でも確認しやすい。 As is clear from the above description, according to the present invention, the change in the interval between the housing main bodies facing each other of the housing-type pipe joint is shown as the change in the construction confirmation portion. Can be easily and accurately confirmed. Furthermore, since the display member has fluorescence, it is easy to confirm even in a dark place.

以下、本発明の実施の形態について、図面を参照しながら詳細に説明する。
図１は、本発明の第１の実施の形態に係るハウジング形管継手を示す図であり、図１（Ａ）は横断面図、図１（Ｂ）は縦断面図である。
図２は、図１のハウジング形管継手の施工確認部材を示す図であり、図２（Ａ）は全体の斜視図、図２（Ｂ）は縦断面図である。
図３は、図１のハウジング形管継手の施工段階を説明する図であり、図３（Ａ）は施工途中、図３（Ｂ）は施工完了時を示す。
ハウジング形管継手は、図１に示すように、接続する２本の管Ｐの端部外面に当接するガスケット６と、二つ割りにされたハウジング本体３と、これらのハウジング本体３を締め付け固定する締結具７とを有する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1A and 1B are views showing a housing-type pipe joint according to a first embodiment of the present invention. FIG. 1A is a transverse sectional view, and FIG. 1B is a longitudinal sectional view.
2 is a view showing a construction confirmation member of the housing-type pipe joint of FIG. 1, FIG. 2 (A) is a perspective view of the whole, and FIG. 2 (B) is a longitudinal sectional view.
FIGS. 3A and 3B are diagrams for explaining the construction stage of the housing-type pipe joint of FIG. 1. FIG. 3A shows the middle of construction, and FIG.
As shown in FIG. 1, the housing-type pipe joint includes a gasket 6 that abuts against the outer surface of the ends of two pipes P to be connected, a housing body 3 that is divided in two, and a fastening that fastens and fixes these housing bodies 3. And a tool 7.

ハウジング本体３は、半円状の円弧部４、及び、円弧部４の端部において外方向に突出するフランジ部５を有する。ハウジング本体３の内縁部３ａは、図１（Ｂ）に示すように、接続される２本の管Ｐの端部外周面に形成された円周溝Ｐａに嵌め込まれる。円弧部４の内周面には、環状のガスケット６が収納される円弧状の溝４ａが形成されている。フランジ部５には、後述する締結具７を装着するためのボルト孔５ａが開けられている。ハウジング本体３が正確に施工された状態では、合わされる両円弧部４の端面である合わせ面４ｂ同士が当接する。 The housing body 3 includes a semicircular arc portion 4 and a flange portion 5 that protrudes outward at the end of the arc portion 4. As shown in FIG. 1B, the inner edge 3a of the housing body 3 is fitted into a circumferential groove Pa formed on the outer peripheral surface of the ends of the two pipes P to be connected. On the inner peripheral surface of the arc portion 4, an arc-shaped groove 4 a in which the annular gasket 6 is accommodated is formed. The flange portion 5 is provided with a bolt hole 5a for mounting a fastener 7 described later. In a state where the housing main body 3 is accurately constructed, the mating surfaces 4b which are the end surfaces of the two arc portions 4 to be mated contact each other.

締結具７は、ボルト８とナット９とからなり、一方のフランジ部５のボルト孔５ａからボルト８を挿通して他方のフランジ部５のボルト孔５ａを通し、ナット９で固定する。 The fastener 7 includes a bolt 8 and a nut 9. The bolt 8 is inserted from the bolt hole 5 a of one flange portion 5, the bolt hole 5 a of the other flange portion 5 is passed, and is fixed by the nut 9.

ボルト８の両フランジ部５間の部分には、施工確認部材１０が配されている。施工確認部材１０は、図１（Ａ）に示すように、ナット９側に配置された外側円筒部材１１と、ボルト８のヘッド側に配置された内側円筒部材１２とからなる。各円筒部材１１、１２は、図２に示すように、円筒部１１ａ、１２ａと、同円筒部１１ａ、１２ａの一端から外方向に張り出すリング状部１１ｂ、１２ｂとを有する。リング状部１１ｂ、１２ｂの外径は、フランジ部５のボルト孔５ａの内径よりも大きい。内側円筒部材１２は、リング状部１２ａがボルト８のヘッド側のフランジ部５の内面に当接するようにボルト８に係止されている。外側円筒部材１１は、リング状部１１ｂがナット９側のフランジ部５の内面に当接するようにボルト８に係止されている。 A construction confirmation member 10 is disposed between the flange portions 5 of the bolt 8. As shown in FIG. 1A, the construction confirmation member 10 includes an outer cylindrical member 11 disposed on the nut 9 side and an inner cylindrical member 12 disposed on the head side of the bolt 8. As shown in FIG. 2, each cylindrical member 11, 12 has cylindrical portions 11 a, 12 a and ring-shaped portions 11 b, 12 b that project outward from one end of the cylindrical portions 11 a, 12 a. The outer diameters of the ring-shaped portions 11 b and 12 b are larger than the inner diameter of the bolt hole 5 a of the flange portion 5. The inner cylindrical member 12 is locked to the bolt 8 so that the ring-shaped portion 12 a contacts the inner surface of the flange portion 5 on the head side of the bolt 8. The outer cylindrical member 11 is locked to the bolt 8 so that the ring-shaped portion 11b contacts the inner surface of the flange portion 5 on the nut 9 side.

円筒部材１１、１２は、例えば、円筒部１１ａ、１２ａの内面に突起（図示されず）を設けて、この突起をボルト８のねじ山間に噛み合わせることによりボルトに係止される。また、円筒部１１ａ、１２ａの内径をボルト８に圧入できる程度に小径として、ボルト８に係止することもできる。 For example, the cylindrical members 11 and 12 are provided with protrusions (not shown) on the inner surfaces of the cylindrical portions 11 a and 12 a, and the protrusions are engaged with the threads of the bolt 8 to be locked to the bolts. Further, the cylindrical portions 11a and 12a can be locked to the bolt 8 so that the inner diameter of the cylindrical portions 11a and 12a is small enough to be press-fitted into the bolt 8.

図２に示すように、内側円筒部材１２は、その円筒部１２ａの端部を外側円筒部材１１の円筒部１１ａの内側に嵌め込まれている。内側円筒部材１１と外側円筒部材１２とは、その円筒部の当接部において圧入、嵌合、接着、溶接等の手段により一体化して用いられることが好ましい。内側円筒部材１２の円筒部１２ａの端部外周面には、着色部１２ｃが形成されている。この着色部１２ｃの長さは、ハウジング形管継手１が正確に施工されて、ハウジング本体３の合わせ面４ｂが当接したときに外側円筒部１１ａによって完全に覆われるように設定されている。ハウジング本体３の合わせ面４ｂのスキマの長さと連動して、着色部１２ｃの露出している部分の長さが変わる。 As shown in FIG. 2, the inner cylindrical member 12 is fitted with the end portion of the cylindrical portion 12 a inside the cylindrical portion 11 a of the outer cylindrical member 11. The inner cylindrical member 11 and the outer cylindrical member 12 are preferably used in an integrated manner by means such as press-fitting, fitting, bonding, and welding at the abutting portion of the cylindrical portion. A colored portion 12 c is formed on the outer peripheral surface of the end portion of the cylindrical portion 12 a of the inner cylindrical member 12. The length of the colored portion 12c is set so that the outer cylindrical portion 11a is completely covered when the housing-type pipe joint 1 is accurately constructed and the mating surface 4b of the housing body 3 abuts. The length of the exposed portion of the colored portion 12c changes in conjunction with the gap length of the mating surface 4b of the housing body 3.

各円筒部材１１、１２は、ポリエチレンやポリプロピレンなどの樹脂、鉄鋼材や銅合金などの金属単体、あるいは、樹脂の組み合わせ、金属の組み合わせ、樹脂と金属との組み合わせなどで作製される。着色部１２ｃは、例えば蓄光材料、有機蛍光物質や無機蛍光物質などの蛍光材料、又は内周円筒部１２の円筒部１２ａの外周に蓄光塗料や蛍光材料を含んだ塗料を塗布することにより形成される。内側円筒部材１２の、着色部１２ｃ以外の部分は、外側円筒部材１１と同色とすると施工完了がより明確となり好ましい。 Each of the cylindrical members 11 and 12 is made of a resin such as polyethylene or polypropylene, a single metal such as a steel material or a copper alloy, a combination of resins, a combination of metals, a combination of resin and metal, or the like. The colored portion 12c is formed, for example, by applying a phosphorescent material, a fluorescent material such as an organic fluorescent material or an inorganic fluorescent material, or a paint containing a phosphorescent paint or a fluorescent material to the outer periphery of the cylindrical portion 12a of the inner peripheral cylindrical portion 12. The The portions other than the colored portion 12c of the inner cylindrical member 12 are preferably the same color as the outer cylindrical member 11, so that the completion of construction becomes clearer and preferable.

なお、内側円筒部材１２と外側円筒部材１１は、ボルト８のヘッド側及びナット９側のいずれの側に配置してもよいが、内側円筒部材１２をヘッド側とすることによりボルト８への取り付けが容易になるため好ましい。 The inner cylindrical member 12 and the outer cylindrical member 11 may be arranged on either the head side of the bolt 8 or the nut 9 side, but the inner cylindrical member 12 is attached to the bolt 8 by making the inner cylindrical member 12 the head side. Is preferable because it becomes easier.

図１を参照して施工確認部材１０の装着方法を説明する。
最初に、ボルト８を一方のフランジ部５のボルト孔５ａに通す。そして、内側円筒部材１２の円筒部１２ａが外側円筒部材１１の円筒部１１ａの内周に嵌合されて一体化された円筒部材１１，１２をボルト８に通し、リング状部１２ｂをフランジ部５の内面に当接させて係止する。その後、もう一方のフランジ部５のボルト孔５ａにボルトの先端を通して、フランジ部５から突き出たボルト８の先端にナット９を螺合させる。 A method for mounting the construction confirmation member 10 will be described with reference to FIG.
First, the bolt 8 is passed through the bolt hole 5 a of one flange portion 5. Then, the cylindrical portion 11a of the inner cylindrical member 12 is fitted into the inner periphery of the cylindrical portion 11a of the outer cylindrical member 11 and integrated, and the cylindrical members 11 and 12 are passed through the bolt 8 and the ring-shaped portion 12b is connected to the flange portion 5. The inner surface is brought into contact with and locked. Thereafter, the bolt 9 is passed through the bolt hole 5 a of the other flange portion 5, and the nut 9 is screwed onto the tip of the bolt 8 protruding from the flange portion 5.

この施工確認部材１０の作用を説明する。
図３（Ａ）に示す、ハウジング本体３の合わせ面４ｂ間にスキマｘが開いている状態では、内側円筒部材１２の着色部１２ｃが、外側円筒部材１１の円筒部１１ａ内に完全に入り込んでおらず露出している。そして、ボルト８とナット９とを締め付けると、各円筒部材１１、１２はリング状部１１ｂ、１２ｂがフランジ部５で押されて、内側円筒部材１２の着色部１２ｃが外側円筒部材１１の円筒部１１ａ内に徐々に入り込む。さらにボルト８とナット９を締め付けると、着色部１２ｃがさらに円筒部１１ａ内に入り込んで、露出している部分の長さが短くなる。そして、図３（Ｂ）に示す、ハウジング本体３の合わせ面４ｂが当接した状態では、着色部１２ｃは完全に外側円筒部材１１に覆われて見えなくなる。 The effect | action of this construction confirmation member 10 is demonstrated.
In a state where the gap x is opened between the mating surfaces 4 b of the housing body 3 shown in FIG. 3A, the colored portion 12 c of the inner cylindrical member 12 completely enters the cylindrical portion 11 a of the outer cylindrical member 11. It is exposed. When the bolt 8 and the nut 9 are tightened, the cylindrical members 11 and 12 are pressed by the ring-shaped portions 11 b and 12 b by the flange portion 5, and the colored portion 12 c of the inner cylindrical member 12 is the cylindrical portion of the outer cylindrical member 11. Gradually enter 11a. When the bolt 8 and the nut 9 are further tightened, the colored portion 12c further enters the cylindrical portion 11a, and the length of the exposed portion is shortened. 3B, the colored portion 12c is completely covered with the outer cylindrical member 11 and cannot be seen.

つまり、ハウジング本体３の合わせ面４ｂ間のスキマの長さと、着色部１２ｃの露出している部分の長さとが連動して、合わせ面４ｂ間のスキマがゼロになったときに、着色部１２ｃの露出している部分の長さもゼロになる。したがって、作業者は着色部１２ｃが見えなくなったことで、ハウジング形管継手１が正確に装着されたことを確認できる。また、着色部１２ｃには蛍光塗料が塗布されているので、暗所でも目視で容易に確認できる。 That is, when the gap between the mating surfaces 4b of the housing body 3 and the length of the exposed portion of the coloring portion 12c are interlocked with each other, the coloring portion 12c becomes zero when the gap between the mating surfaces 4b becomes zero. The length of the exposed part becomes zero. Therefore, the operator can confirm that the housing-type pipe joint 1 has been correctly mounted by observing the colored portion 12c. Moreover, since the fluorescent paint is applied to the colored portion 12c, it can be easily confirmed visually even in a dark place.

以下、施工確認部材の変形例を説明する。
図４は、施工確認部材の第１の変形例を示す図であり、図４（Ａ）は施工途中、図３（Ｂ）は施工完了時の状態を示す。
この例の施工確認部材１０は、図１の例と同様に、内側円筒部材１２と外側円筒部材１１とを有するが、内側円筒部材１２の着色部１２ｃが、円筒部１２ａより小径となっており、着色部１２ｃと円筒部１２ａとの間に段部１２ｄが形成されている。図４（Ａ）に示す、ハウジング本体３の合わせ面４ｂ間にスキマが開いている状態では、着色部１２ｃが露出している。図４（Ｂ）に示す、円弧部４の合わせ面４ｂが当接した状態では、内側円筒部材１２の着色部１２ｃが外側円筒部材１１の円筒部１１ａ内に完全に入り込んで、外側円筒部材１１の端面が、内側円筒部材１２の段部１２ｄに当接している。これにより、着色部１２からの漏光を確実に防止することができ、暗所での確認をより確実に行うことができる。 Hereinafter, modifications of the construction confirmation member will be described.
4A and 4B are diagrams showing a first modification of the construction confirmation member. FIG. 4A shows a state during construction, and FIG. 3B shows a state when construction is completed.
The construction confirmation member 10 of this example has an inner cylindrical member 12 and an outer cylindrical member 11 as in the example of FIG. 1, but the colored portion 12c of the inner cylindrical member 12 has a smaller diameter than the cylindrical portion 12a. A step portion 12d is formed between the coloring portion 12c and the cylindrical portion 12a. In a state where a gap is opened between the mating surfaces 4b of the housing body 3 shown in FIG. 4A, the colored portion 12c is exposed. In the state shown in FIG. 4B where the mating surface 4 b of the arc portion 4 is in contact, the colored portion 12 c of the inner cylindrical member 12 completely enters the cylindrical portion 11 a of the outer cylindrical member 11, and the outer cylindrical member 11. Is in contact with the step portion 12 d of the inner cylindrical member 12. Thereby, the light leakage from the coloring part 12 can be prevented reliably, and confirmation in a dark place can be more reliably performed.

図５は、施工確認部材の第２の変形例を示す図であり、図５（Ａ）は施工途中、図５（Ｂ）は施工完了時の状態を示す。
この例の施工確認部材１０は、１個の円筒部材１３のみを使用するものである。この円筒部材１３は、円筒部１３ａと、円筒部１３ａの一端から外方向に張り出すリング状部１３ｂとを有する。この例では、円筒部１３ａの長さがフランジ部５間の間隔よりもやや長い。そして、円筒部５の端部の外面に着色部１３ｃが形成されており、この着色部１３ｃがフランジ部５のボルト孔５ａに入り込むように構成されている。 5A and 5B are diagrams showing a second modification of the construction confirmation member. FIG. 5A shows a state during construction, and FIG. 5B shows a state when construction is completed.
The construction confirmation member 10 in this example uses only one cylindrical member 13. The cylindrical member 13 includes a cylindrical portion 13a and a ring-shaped portion 13b that protrudes outward from one end of the cylindrical portion 13a. In this example, the length of the cylindrical portion 13 a is slightly longer than the interval between the flange portions 5. And the coloring part 13c is formed in the outer surface of the edge part of the cylindrical part 5, and this coloring part 13c is comprised so that the bolt hole 5a of the flange part 5 may enter.

つまり、図５（Ａ）に示す、ハウジング本体３の合わせ面４ｂ間にスキマが開いている状態では、円筒部材１３の着色部１３ｃは、フランジ部５のボルト孔５ａに入り込んでおらず露出している。ボルト８とナット９とを締め付けると、円筒部材１３はリング状部１３ｂがフランジ部５で押されて、円筒部１３ａの端部（着色部１３ｃ）がもう一方のフランジ部５のボルト孔５ａに入り込む。さらにボルト８とナット９を締め付けると、着色部１３ｃが徐々にボルト孔５ａ内に入り込んで、露出している部分の長さが短くなる。そして、図５（Ｂ）に示す、ハウジング本体３の合わせ面４ｂが当接した状態では、着色部１３ｃは完全にボルト孔５ａに入り込んで外から見えなくなる。 That is, in a state where the clearance is opened between the mating surfaces 4b of the housing body 3 shown in FIG. 5A, the colored portion 13c of the cylindrical member 13 is not penetrated into the bolt hole 5a of the flange portion 5 and is exposed. ing. When the bolt 8 and the nut 9 are tightened, the ring-shaped portion 13b of the cylindrical member 13 is pushed by the flange portion 5, and the end portion (colored portion 13c) of the cylindrical portion 13a is inserted into the bolt hole 5a of the other flange portion 5. Get in. When the bolt 8 and the nut 9 are further tightened, the colored portion 13c gradually enters the bolt hole 5a, and the length of the exposed portion is shortened. Then, in the state where the mating surface 4b of the housing body 3 is in contact as shown in FIG. 5B, the colored portion 13c completely enters the bolt hole 5a and is not visible from the outside.

この例の施工確認部材は、使用する部材が一個であるという利点がある。 The construction confirmation member of this example has an advantage that only one member is used.

図６は、施工確認部材の第３の変形例を示す図であり、図６（Ａ）は全体の斜視図、図６（Ｂ）は縦断面図である。
図７は、施工段階を説明する図であり、図７（Ａ）は施工途中、図７（Ｂ）は施工完了時を示す。
この例の施工確認部材１０は、図１の例と同様に、内側円筒部材１２と外側円筒部材１１とを有するが、図６に示すように、外側円筒部材１１の円筒部１１ａの端部に、円周方向に並んで複数の窓１１ｃが形成されている。そして、内側円筒部材１２の着色部１２ｃが外側円筒部材１１の円筒部１１ａに入り込んで、窓１１ｃから着色部１２ｃが露出している。図７（Ａ）に示す、ハウジング本体３の合わせ面４ｂ間にスキマのある状態では、窓１１ｃから着色部１２ｃが見えているが、図７（Ｂ）に示す、ハウジング本体３の合わせ面４ｂが当接した状態では、着色部１２ｃが外側円筒部材１１の円筒部１１ａ内に入り込んで、窓１１ｃから着色部１２ｃが見えなくなる。 6A and 6B are diagrams showing a third modification of the construction confirmation member. FIG. 6A is an overall perspective view, and FIG. 6B is a longitudinal sectional view.
FIG. 7 is a diagram for explaining the construction stage, FIG. 7 (A) shows the middle of construction, and FIG. 7 (B) shows the completion of construction.
The construction confirmation member 10 of this example has an inner cylindrical member 12 and an outer cylindrical member 11 as in the example of FIG. 1, but at the end of the cylindrical portion 11 a of the outer cylindrical member 11 as shown in FIG. 6. A plurality of windows 11c are formed side by side in the circumferential direction. The colored portion 12c of the inner cylindrical member 12 enters the cylindrical portion 11a of the outer cylindrical member 11, and the colored portion 12c is exposed from the window 11c. In a state where there is a gap between the mating surfaces 4b of the housing body 3 shown in FIG. 7A, the colored portion 12c can be seen from the window 11c, but the mating surface 4b of the housing body 3 shown in FIG. 7B. In a state in which the colored portion 12c comes into contact, the colored portion 12c enters the cylindrical portion 11a of the outer cylindrical member 11, and the colored portion 12c becomes invisible from the window 11c.

図８は、施工確認部材の第４の変形例を示す縦断面図である。
この例の施工確認部材１０は、一対の外側円筒部材１４と、内側円筒部材１５とを有する。外側円筒部材１４は、図１等の外側円筒部材１１と同様の形状で、円筒部１４ａとリング状部１４ｂを有する。内側円筒部材１５は、リング状部のない円筒状の形状であり、蓄光部材等で形成または同円筒部の外面が着色されている。この内側円筒部材１５は、ボルトのほぼ中央部に摩擦などにより係止されている。ハウジング本体３の円弧部４の合わせ面４ｂ間にスキマのある状態では、両外側円筒部材１４の端部間に、内側円筒部材１５が見えているが、合わせ面４ｂが当接すると、外側円筒部１４の向かい合った端面が当接し、内側円筒部材１５が両外側円筒部材１４の円筒部１４ａに覆われて見えなくなる。 FIG. 8 is a longitudinal sectional view showing a fourth modification of the construction confirmation member.
The construction confirmation member 10 in this example includes a pair of outer cylindrical members 14 and an inner cylindrical member 15. The outer cylindrical member 14 has the same shape as the outer cylindrical member 11 of FIG. 1 and the like, and has a cylindrical portion 14a and a ring-shaped portion 14b. The inner cylindrical member 15 has a cylindrical shape without a ring-shaped portion, and is formed of a phosphorescent member or the like, or the outer surface of the cylindrical portion is colored. The inner cylindrical member 15 is locked to the substantially central portion of the bolt by friction or the like. In a state where there is a gap between the mating surfaces 4b of the arcuate portion 4 of the housing body 3, the inner cylindrical member 15 is visible between the end portions of the outer cylindrical members 14, but when the mating surface 4b comes into contact, the outer cylinder The opposite end surfaces of the portions 14 come into contact with each other, and the inner cylindrical member 15 is covered with the cylindrical portions 14a of the outer cylindrical members 14 and cannot be seen.

図９は、施工確認部材の第５の変形例を示す図であり、図９（Ａ）は変形前の縦断面図、図９（Ｂ）は変形後の縦断面図である。
図１０は、施工段階を説明する図であり、図１０（Ａ）は施工途中、図１０（Ｂ）は施工完了時を示す。
この例の施工確認部材１０は、図９に示すように、１個の円筒部材１７からなる。円筒部材１７は、中央の変形部１７ａと、変形部１７ａの両側の円筒部１７ｂと、両端から外方向に張り出すリング状部１７ｃとを有する。変形部１７ａは変形が可能な材料で作製されており、外面が着色されている。リング状部１７ｃを両側から押すと、図９（Ｂ）に示すように、変形部１７ａが一方の円筒部１７ｂに食い込むように変形する。 9A and 9B are diagrams showing a fifth modification of the construction confirmation member. FIG. 9A is a longitudinal sectional view before deformation, and FIG. 9B is a longitudinal sectional view after deformation.
FIG. 10 is a diagram for explaining the construction stage, FIG. 10 (A) shows the middle of construction, and FIG. 10 (B) shows the completion of construction.
The construction confirmation member 10 of this example includes a single cylindrical member 17 as shown in FIG. The cylindrical member 17 includes a central deforming portion 17a, cylindrical portions 17b on both sides of the deforming portion 17a, and ring-shaped portions 17c projecting outward from both ends. The deformable portion 17a is made of a deformable material, and the outer surface is colored. When the ring-shaped portion 17c is pushed from both sides, as shown in FIG. 9B, the deformable portion 17a is deformed so as to bite into one cylindrical portion 17b.

図１０（Ａ）に示す、ハウジング本体３の合わせ面４ｂ間にスキマが開いている状態では、変形部１７ａは延びた状態で露出している。ボルト８とナット９とを締め付けると、リング状部１７ｃがフランジ部５で押されて、着色された変形部１７ａが一方の円筒部１７ｂに食い込むように変形し始める。そして、図１０（Ｂ）に示す、ハウジング本体３の合わせ面４ｂが当接した状態では、着色された変形部１７ａが完全に円筒部１７ｂ内に食い込み、外から見えなくなる。
なお、変形部１７ｂが食い込みやすくなるように、食い込まれる側（この例では図の下側）の円筒部１７ｂは、変形部１７ａに向かって径が広がっており、もう一方（この例では図の上側）の円筒部１７ｂは、変形部１７ａに向かって径が狭くなっていることが好ましい。 In the state where the clearance is opened between the mating surfaces 4b of the housing main body 3 shown in FIG. 10A, the deforming portion 17a is exposed in an extended state. When the bolt 8 and the nut 9 are tightened, the ring-shaped portion 17c is pushed by the flange portion 5, and the colored deformed portion 17a starts to deform so as to bite into one cylindrical portion 17b. And in the state which the mating surface 4b of the housing main body 3 contact | abutted as shown in FIG.10 (B), the colored deformation | transformation part 17a bites into the cylindrical part 17b completely, and it becomes invisible from the outside.
The cylindrical portion 17b on the biting side (the lower side in the figure in this example) has a diameter that increases toward the deforming portion 17a so that the deforming portion 17b can easily bite in, and the other side (in the example shown in the figure). The upper cylindrical portion 17b preferably has a diameter that decreases toward the deformed portion 17a.

図１１は、施工確認部材の第６の変形例を示す側面図である。
この例の施工確認部材１０は、第５の施工確認部材とほぼ同様の構成の１個の円筒状部材１７であるが、変形部１７ａが蛇腹状に形成されたものである。ハウジング本体３の合わせ面４ｂが当接した状態では、変形部１７ａが折りたたまれ、着色された変形部１７ａが外から見えなくなる。 FIG. 11 is a side view showing a sixth modification of the construction confirmation member.
The construction confirmation member 10 in this example is one cylindrical member 17 having a configuration substantially similar to that of the fifth construction confirmation member, but the deformed portion 17a is formed in a bellows shape. In a state where the mating surface 4b of the housing body 3 is in contact, the deformable portion 17a is folded, and the colored deformable portion 17a is not visible from the outside.

図１２は、施工確認部材の第７の変形例を示す側面断面図であり、図１２（Ａ）はハウジング形管継手の施工完了時、図１２（Ｂ）はハウジング形管継手の施工前又は分解時を示す。
この例の施工確認部材１０は、図１の施工確認部材と同様の構成を有し、外側円筒部材１１と内側円筒部材１２とを有する。外側円筒部材１１の円筒部１１ａの内径は、内側円筒部材１２の円筒部１２ａの外径よりもやや大きく、外側円筒部材１１の円筒部１１ａ内を、内側円筒部材１２の円筒部１２ａが軸上をスライド可能となっている。さらに、外側円筒部材１１の、円筒部１１ａのリング状部１１ｂ側の端部内面に、内側に張り出すばね押さえ部１１ｄが設けられている。そして、このばね押さえ部１１ｄと、内側円筒部材１２の端面との間にバネ１９が介装されている。このバネ１９は、ハウジング形管継手を分解するときなどの円弧部の合わせ面が開いたとき、図１２（Ｂ）で示すように、内側円筒部材１２がバネ１９で付勢されて外側円筒部材１１から離れるように動く。 12A and 12B are side cross-sectional views showing a seventh modification of the construction confirmation member, in which FIG. 12A shows when the construction of the housing-type pipe joint is completed, and FIG. Indicates the time of disassembly.
The construction confirmation member 10 in this example has the same configuration as the construction confirmation member in FIG. 1, and includes an outer cylindrical member 11 and an inner cylindrical member 12. The inner diameter of the cylindrical portion 11a of the outer cylindrical member 11 is slightly larger than the outer diameter of the cylindrical portion 12a of the inner cylindrical member 12, and the cylindrical portion 12a of the inner cylindrical member 12 is axially within the cylindrical portion 11a of the outer cylindrical member 11. Can be slid. Furthermore, a spring pressing portion 11d that protrudes inward is provided on the inner surface of the outer cylindrical member 11 on the end of the cylindrical portion 11a on the ring-shaped portion 11b side. A spring 19 is interposed between the spring pressing portion 11 d and the end surface of the inner cylindrical member 12. As shown in FIG. 12B, the spring 19 is biased by the spring 19 when the mating surface of the arc portion is opened, such as when the housing-type pipe joint is disassembled. Move away from 11.

なお、図９、１０、１１の例で変形部１７ａを弾性材料で作製することにより、同様の効果を得られる。 In addition, the same effect is acquired by producing the deformation | transformation part 17a with an elastic material in the example of FIG.

次に、図１を参照して、施工確認方法の他の例を説明する。
この例では、施工確認部材を使用せず、ボルト８の先端部に着色部を形成する。着色部は、ハウジング本体３の合わせ面４ｂが当接したときの、ボルト８の、ナット９とフランジ部５に貫通している部分（図１のＬで示す部分）に設けられている。合わせ面４ｂ間にスキマのある状態では、ボルト８の着色部がフランジ部５の内側に見えているが、ハウジング本体３の合わせ面４ｂが当接した状態では、ボルト８の着色部は全体がフランジ部５に入り込んで、フランジ部５とナット９で隠れるため、外から見えなくなる。
また、施工確認部材を使用せず、ガスケット６の外周面に蛍光着色部を形成しても良い。合わせ面４ｂ間にスキマのある状態では、ガスケット６の外周面の蛍光着色部が合わせ面４ｂ間に見えているが、ハウジング本体３の合わせ面４ｂが当接した状態では、ハウジング本体３の外周面の蛍光着色部は見えなくなる。 Next, another example of the construction confirmation method will be described with reference to FIG.
In this example, a colored portion is formed at the tip of the bolt 8 without using a construction confirmation member. The colored portion is provided in a portion (a portion indicated by L in FIG. 1) penetrating the nut 9 and the flange portion 5 of the bolt 8 when the mating surface 4 b of the housing body 3 abuts. In a state where there is a gap between the mating surfaces 4b, the colored portion of the bolt 8 can be seen inside the flange portion 5, but in the state where the mating surface 4b of the housing body 3 is in contact, the colored portion of the bolt 8 is entirely. Since it enters the flange portion 5 and is hidden by the flange portion 5 and the nut 9, it cannot be seen from the outside.
Moreover, you may form a fluorescent coloring part in the outer peripheral surface of the gasket 6, without using a construction confirmation member. In the state where there is a gap between the mating surfaces 4b, the fluorescent colored portion on the outer peripheral surface of the gasket 6 is visible between the mating surfaces 4b. However, when the mating surface 4b of the housing main body 3 is in contact, the outer periphery of the housing main body 3 is visible. The fluorescently colored part of the surface becomes invisible.

本発明の第１の実施の形態に係るハウジング形管継手を示す図であり、図１（Ａ）は横断面図、図１（Ｂ）は縦断面図である。It is a figure which shows the housing type pipe joint which concerns on the 1st Embodiment of this invention, FIG. 1 (A) is a cross-sectional view, FIG.1 (B) is a longitudinal cross-sectional view. 図１のハウジング形管継手の施工確認部材を示す図であり、図２（Ａ）は全体の斜視図、図２（Ｂ）は縦断面図である。It is a figure which shows the construction confirmation member of the housing type pipe joint of FIG. 1, FIG. 2 (A) is a whole perspective view, FIG.2 (B) is a longitudinal cross-sectional view. 図１のハウジング形管継手の施工段階を説明する図であり、図３（Ａ）は施工途中、図３（Ｂ）は施工完了時を示す。It is a figure explaining the construction stage of the housing type pipe joint of FIG. 1, FIG. 3 (A) is in the middle of construction, FIG. 3 (B) shows the time of construction completion. 施工確認部材の第１の変形例を示す図であり、図４（Ａ）は施工途中、図３（Ｂ）は施工完了時の状態を示す。It is a figure which shows the 1st modification of a construction confirmation member, FIG. 4 (A) is in the middle of construction, FIG.3 (B) shows the state at the time of completion of construction. 施工確認部材の第２の変形例を示す図であり、図５（Ａ）は施工途中、図５（Ｂ）は施工完了時の状態を示す。It is a figure which shows the 2nd modification of a construction confirmation member, FIG. 5 (A) is in the middle of construction, FIG.5 (B) shows the state at the time of completion of construction. 施工確認部材の第３の変形例を示す図であり、図６（Ａ）は全体の斜視図、図６（Ｂ）は縦断面図である。It is a figure which shows the 3rd modification of a construction confirmation member, FIG. 6 (A) is a perspective view of the whole, FIG. 6 (B) is a longitudinal cross-sectional view. 図６の施工確認部材の施工段階を説明する図であり、図７（Ａ）は施工途中、図７（Ｂ）は施工完了時を示す。It is a figure explaining the construction stage of the construction confirmation member of FIG. 6, FIG. 7 (A) shows the middle of construction, FIG. 7 (B) shows the time of construction completion. 施工確認部材の第４の変形例を示す縦断面図である。It is a longitudinal cross-sectional view which shows the 4th modification of a construction confirmation member. 施工確認部材の第５の変形例を示す図であり、図９（Ａ）は変形前の縦断面図、図９（Ｂ）は変形後の縦断面図である。It is a figure which shows the 5th modification of a construction confirmation member, FIG. 9 (A) is a longitudinal cross-sectional view before a deformation | transformation, FIG.9 (B) is a longitudinal cross-sectional view after a deformation | transformation. 図９の施工確認部材の施工段階を説明する図であり、図１０（Ａ）は施工途中、図１０（Ｂ）は施工完了時を示す。It is a figure explaining the construction stage of the construction confirmation member of FIG. 9, FIG. 10 (A) is in the middle of construction, FIG.10 (B) shows the time of construction completion. 施工確認部材の第６の変形例を示す側面図である。It is a side view which shows the 6th modification of a construction confirmation member. 施工確認部材の第７の変形例を示す側面断面図であり、図１２（Ａ）はハウジング形管継手の施工完了時、図１２（Ｂ）はハウジング形管継手分解時を示す。It is side surface sectional drawing which shows the 7th modification of a construction confirmation member, FIG. 12 (A) shows the time of completion of construction of a housing type pipe joint, and FIG. 従来のハウジング形管継手の構造の一例を示す図であり、図（Ａ）は横断面図、図（Ｂ）は縦断面図である。It is a figure which shows an example of the structure of the conventional housing type pipe joint, A figure (A) is a cross-sectional view, and a figure (B) is a longitudinal cross-sectional view. 締め付け不良の例を説明する図である。It is a figure explaining the example of a fastening defect.

Explanation of symbols

１ハウジング形管継手３ハウジング本体
４円弧部５フランジ部
６ガスケット７締結具
８ボルト９ナット
１０施工確認部材１１外側円筒部材
１２、１５内側円筒部材１７円筒部材
１９バネ DESCRIPTION OF SYMBOLS 1 Housing type pipe joint 3 Housing main body 4 Arc part 5 Flange part 6 Gasket 7 Fastening tool 8 Bolt 9 Nut 10 Construction confirmation member 11 Outer cylindrical member 12, 15 Inner cylindrical member 17 Cylindrical member 19 Spring

Claims

A gasket that abuts across the outer surface of the ends of the two pipes to be connected; a plurality of divided arc portions; and a housing body having a flange portion that projects outward at the ends of the arc portions;
A fastener that fastens and fixes the flange portions of the plurality of housing bodies facing each other;
A housing type pipe joint comprising:
A housing-type pipe joint, comprising a construction confirmation part arranged between the housing bodies and indicating a relative position of the housing body when the joint connection is completed.

The housing-type pipe joint according to claim 1, further comprising a construction confirmation member as the construction confirmation unit.

The construction confirmation part has a display part that can be visually confirmed,
The housing-type pipe joint according to claim 1 or 2, wherein when the flange parts are fixed and the joint connection is completed, the display part cannot be seen.

The housing-type pipe joint according to any one of claims 1 to 3, wherein the display section has fluorescence.

The housing-type pipe joint according to claim 3 or 4, wherein the interval between the opposing mating surfaces of the divided housing main body and the length of the display portion are interlocked.

The housing-type pipe joint according to any one of claims 1 to 5, wherein the construction confirmation portion is disposed on an outer periphery of the fastener between the flange portions of the housing body.