JP2012167723A - Expansion joint - Google Patents
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- JP2012167723A JP2012167723A JP2011028134A JP2011028134A JP2012167723A JP 2012167723 A JP2012167723 A JP 2012167723A JP 2011028134 A JP2011028134 A JP 2011028134A JP 2011028134 A JP2011028134 A JP 2011028134A JP 2012167723 A JP2012167723 A JP 2012167723A
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Abstract
Description
この発明は、伸縮継手に関するものである。より詳しくは、建物の排水配管設備などに用いられる伸縮継手に関するものである。 The present invention relates to an expansion joint. More specifically, the present invention relates to an expansion joint used in a building drainage piping facility or the like.
例えば、建物などには、各種の配管設備が設けられている。このような配管設備には、樹脂製の管部材を、樹脂製の継手部材で接続することによって構成されたものなどがある。 For example, various piping facilities are provided in a building or the like. Such piping equipment includes one configured by connecting a resin pipe member with a resin joint member.
上記した配管設備には、内部を高温の流体が流れることにより、主に管部材に熱伸縮を生じるものが存在する。このような熱伸縮が生じる配管設備としては、例えば、高温の排水が流れる排水配管などがある。 Some of the above-described piping facilities mainly cause thermal expansion and contraction of the pipe member when a high-temperature fluid flows inside. Examples of such piping facilities that cause thermal expansion and contraction include drainage piping through which high-temperature drainage flows.
このように、管部材が熱伸縮を起こした場合、管部材や継手部材が過度の変形によって破損するおそれがある。そのため、継手部材と管部材との間に伸縮継手を設置することにより、管部材の熱伸縮の影響を吸収させて管部材や継手部材などを破損から保護することが行われている（例えば、特許文献１参照）。 Thus, when a pipe member raise | generates thermal expansion-contraction, there exists a possibility that a pipe member and a coupling member may be damaged by excessive deformation | transformation. Therefore, by installing an expansion joint between the joint member and the pipe member, it is possible to absorb the influence of thermal expansion and contraction of the pipe member and protect the pipe member, the joint member and the like from damage (for example, Patent Document 1).
このような伸縮継手は、少なくとも、継手部材へ嵌合可能な差口部と、この差口部よりも大きな径を有して管部材を挿入可能な受口部とを一体に有すると共に、この受口部から挿入した管部材の熱伸縮を吸収可能なものとされる。 Such an expansion joint integrally includes at least an opening portion that can be fitted to the joint member, and a receiving portion that has a larger diameter than the opening portion and into which a pipe member can be inserted. The thermal expansion and contraction of the pipe member inserted from the receiving port can be absorbed.
しかしながら、上記した伸縮継手には、以下のような問題があった。 However, the expansion joint described above has the following problems.
即ち、熱伸縮によって管部材や継手部材に破損が生じないようにするためには、一般に、伸縮継手への管部材の挿入作業時に、管部材を、熱伸縮を見込んだ最適挿入深さに設置する必要があるが、この最適挿入深さを得るために、最適挿入深さの位置を計って管部材に標線を書き入れる作業や、標線の位置で管部材が正確に停止されるように管部材の停止位置を調整する作業が必要となるため、作業効率が良くなかった。 That is, in order to prevent damage to the pipe member and joint member due to thermal expansion and contraction, in general, when inserting the pipe member into the expansion joint, the pipe member is installed at an optimum insertion depth that allows for thermal expansion and contraction. In order to obtain this optimum insertion depth, it is necessary to measure the position of the optimum insertion depth and write a marked line into the pipe member, or to stop the pipe member accurately at the marked line position. The work efficiency is not good because work for adjusting the stop position of the pipe member is required.
そこで、上記特許文献１では、伸縮継手の内部に、管部材を最適挿入深さで位置規制する位置規制部を設けるようにしているが、位置規制部が、受口部に設けられていたため、伸縮継手の全長が長くなっていた。また、上記位置規制部を受口部に設けた場合、管部材の端部の位置によっては、受口部の内部に段差が生じるなどによって、伸縮継手の内部に汚物などが滞留するおそれがあった。 Therefore, in Patent Document 1, a position restricting portion for restricting the position of the pipe member at the optimum insertion depth is provided inside the expansion joint, but the position restricting portion is provided in the receiving portion. The total length of the expansion joint was long. In addition, when the position restricting portion is provided in the receiving portion, depending on the position of the end portion of the pipe member, there is a possibility that dirt or the like may stay inside the expansion joint due to a step in the receiving portion. It was.
上記課題を解決するために、本発明は、差口部と、該差口部よりも径の大きい受口部とを一体に有すると共に、該受口部から内部へ挿入された管部材の熱伸縮を吸収可能な伸縮継手において、前記受口部が、その内部に、挿入された管部材の外周面に弾接して、管部材の軸線方向および半径方向への変位に対するシールが可能なシール部を有し、前記差口部が、その内部に、差口部まで挿入された管部材の端部がそれ以上奥へ入り込めないように位置規制する最終位置規制部を有し、前記差口部の内部における前記最終位置規制部よりも手前側の位置に、前記管部材の端部を最適挿入深さで停止可能な中間停止部を設けたことを特徴とする。 In order to solve the above-described problems, the present invention integrally includes a mouth portion and a mouth portion having a diameter larger than that of the mouth portion, and heat of a pipe member inserted into the inside from the mouth portion. In an expansion joint capable of absorbing expansion and contraction, the receiving portion elastically contacts the outer peripheral surface of the inserted tube member therein, and can be sealed against displacement in the axial direction and radial direction of the tube member And having the final position restricting portion for restricting the position so that the end portion of the pipe member inserted up to the insert portion cannot enter further inside. An intermediate stop portion capable of stopping the end portion of the pipe member at an optimum insertion depth is provided at a position closer to the front side than the final position restricting portion inside the portion.
本発明によれば、上記構成ことによって、以下のような作用効果を得ることができる。即ち、差口部の内部における最終位置規制部よりも手前側の位置に設けた中間停止部が、受口部への管部材の挿入作業時に、管部材の端部の最適挿入深さにて管部材を停止させる。 According to this invention, the following effects can be acquired by the said structure. That is, the intermediate stop portion provided at a position closer to the front side than the final position regulating portion inside the opening portion is at the optimum insertion depth of the end portion of the tube member when the tube member is inserted into the receiving portion. The tube member is stopped.
本発明は、上記した各問題点を解決するために、主に、構造や形状を最適化して管部材の挿入作業を効率化し得るように構成している。 In order to solve the above-described problems, the present invention is mainly configured to optimize the structure and shape so as to improve the efficiency of tube member insertion work.
以下、本発明を具体化した実施例を、図面を用いて詳細に説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings.
＜構成＞以下、構成について説明する。 <Configuration> The configuration will be described below.
建物などに対して、配管設備を設ける。この配管設備を、樹脂製の管部材を樹脂製の継手部材で接続したものとする。管部材と継手部材とには、例えば、それぞれ塩化ビニル樹脂などの素材ものが使用される。そして、特に、この配管設備を、内部に高温の流体が流れることにより、主に管部材に熱伸縮が生じるものとする。例えば、高温の排水が流れる排水配管などとする。 Piping facilities will be provided for buildings. It is assumed that this piping facility is formed by connecting resin pipe members with resin joint members. For the pipe member and the joint member, for example, materials such as vinyl chloride resin are used. In particular, this piping facility is assumed to cause thermal expansion and contraction mainly in the pipe member when a high-temperature fluid flows inside. For example, a drainage pipe through which high temperature drainage flows is used.
この排水配管は、例えば、建物の各階の間を上下に延びる縦配管と、この縦配管から各階ごとに分岐された横配管とで構成される。そして、縦配管と横配管との分岐・合流部分に継手部材として、ほぼＴ字状をしたチーズなどの分岐合流継手が設けられる。
例えば、上記した排水配管が単管式排水システムである場合、上記した分岐合流継手は、建物の各階ごとに設けられる集合管継手となる。
ここで、単管式排水システムとは、要するに、排水の通路と、空気の通路とを、別々の管路に分けることなく、同一の管路の内部に確保し得るようにしたものである。そのために、上記した集合管継手の内部には、排水に旋回力を与えて配管の内周壁に沿って流し得るようにするための旋回羽根が設けられる。
This drain pipe is composed of, for example, a vertical pipe extending up and down between floors of a building and a horizontal pipe branched from the vertical pipe for each floor. A branch / joint joint such as cheese having a substantially T-shape is provided as a joint member at a branch / joint portion between the vertical pipe and the horizontal pipe.
For example, when the above-described drainage pipe is a single-pipe drainage system, the above-described branch / joint joint is a collective pipe joint provided for each floor of the building.
Here, the single-pipe drainage system is basically a drainage passage and an air passage that can be secured in the same pipeline without being separated into separate pipelines. For this purpose, a swirl vane is provided inside the above-described collecting pipe joint so as to apply a swirling force to the drainage so that it can flow along the inner peripheral wall of the pipe.
そして、上記した管部材の熱伸縮（特に、熱伸長。以下同様）による影響を吸収するために、継手部材と管部材との間に、この実施例にかかる樹脂製の伸縮継手を設置する。 And in order to absorb the influence by the thermal expansion / contraction (especially thermal expansion | extension, the same hereafter) of the above-mentioned pipe member, the resin expansion joint concerning this Example is installed between a joint member and a pipe member.
図１、図２は、この実施例にかかる樹脂製の伸縮継手１を示すものであり、図１は斜視図、図２はその断面図である。この伸縮継手１は、上記した継手部材２へ嵌合可能な差口部３と、この差口部３よりも大きな径を有して管部材５を挿入可能な受口部４とを一体に有すると共に、受口部４から内部へ挿入された管部材５の熱伸縮を吸収可能な構成を有するものとされる。 1 and 2 show a resin expansion joint 1 according to this embodiment. FIG. 1 is a perspective view and FIG. 2 is a sectional view thereof. This expansion joint 1 is integrally formed with a port portion 3 that can be fitted to the above-described joint member 2 and a port portion 4 that has a larger diameter than the port portion 3 and into which a pipe member 5 can be inserted. And having a configuration capable of absorbing thermal expansion and contraction of the pipe member 5 inserted into the interior from the receiving port 4.
この場合、伸縮継手１は、継手部材２としての、ほぼＴ字状をしたチーズなどの分岐合流継手の、上部の受口部２ａや、分岐合流部分の受口部２ｂ（横向きの受口部）などに取付けることが可能なものとされる。なお、継手部材２における分岐合流部分の受口部２ｂは、複数設けられても良い。 In this case, the expansion joint 1 is composed of an upper receiving portion 2a or a receiving portion 2b (sideways receiving portion) of the branch and merging portion of the branch and merging joint such as cheese having a substantially T shape as the joint member 2. ) And the like. It should be noted that a plurality of receiving portions 2b at the branching / merging portion in the joint member 2 may be provided.
そして、以上のような基本構成に対し、この実施例のものでは、以下のような構成を備えるようにしている。 In addition to the basic configuration as described above, the present embodiment has the following configuration.
（構成１）
受口部４が、その内部に、挿入された管部材５の外周面に弾接して、管部材５の軸線方向８および半径方向９への変位に対するシールが可能なシール部１１を有している。また、差口部３が、その内部に、差口部３まで挿入された管部材５の端部がそれ以上奥へ入り込めないように位置規制する最終位置規制部１２を有している。そして、差口部３の内部における最終位置規制部１２よりも手前側の位置に、管部材５の端部を最適挿入深さで停止可能な中間停止部１３が設けられる。
(Configuration 1)
The receiving portion 4 has a seal portion 11 which is elastically in contact with the outer peripheral surface of the inserted tube member 5 and can be sealed against displacement in the axial direction 8 and the radial direction 9 of the tube member 5 therein. Yes. In addition, the opening portion 3 has a final position restricting portion 12 for restricting the position so that the end portion of the tube member 5 inserted up to the opening portion 3 cannot enter further inside. Further, an intermediate stop portion 13 capable of stopping the end portion of the pipe member 5 at the optimum insertion depth is provided at a position closer to the front side than the final position restricting portion 12 inside the opening portion 3.
ここで、伸縮継手１は、基本的に全体がほぼ均一の肉厚となるように構成される。但し、必要な場合には、部分的に肉厚を変更することもできる。そして、差口部３と、この差口部３よりも大径の受口部４は、共に管部材５を内部へ挿入可能な内径寸法を有するものとされる。即ち、差口部３と受口部４との内径は、共に、管部材５の外径よりも大きくなされて、差口部３と受口部４との内部に、管部材５が挿嵌され得るようになっている。 Here, the expansion joint 1 is basically configured to have a substantially uniform wall thickness as a whole. However, the wall thickness can be partially changed if necessary. And both the opening part 3 and the receiving part 4 larger diameter than this opening part 3 shall have the internal-diameter dimension which can insert the pipe member 5 inside. In other words, the inner diameters of the outlet portion 3 and the receiving portion 4 are both larger than the outer diameter of the tube member 5, and the tube member 5 is inserted into the inner portion of the outlet portion 3 and the receiving portion 4. To be able to be.
シール部１１は、ゴム製のリング状をしたシール基部１１ａと、このシール基部１１ａの内周から内方へ向けて一体に突設された円錐台状のリップ部１１ｂとを備えている。円錐台状のリップ部１１ｂは、奥側へ向かって縮径される形状を有して、シール基部１１ａから分岐されている。
シール部１１は、シール基部１１ａが、受口部４の内周面に密着状態で嵌合設置されている。そのために、受口部４の内周面には、シール基部１１ａを収容するための段差部を設けるようにしても良い。また、伸縮継手１の差口部３と受口部４との境界部分周辺の内部には、そのほぼ上半部にリップ収容溝１ａが設けられ、管部材５の挿嵌によって拡径されたリップ部１１ｂが収容され得るようになっている。これに対し、伸縮継手１の差口部３と受口部４との境界部分周辺の内部におけるほぼ下半部は、上記したリップ収容溝１ａに汚物などが滞留するのを防止するために、リップ収容溝１ａを設けない非溝形成部１ｂとされている。更に、シール部１１は、受口部４の外周面に取付けられたキャップ部１４によって受口部４から脱落しないよう保持されている。
The seal portion 11 includes a seal base portion 11a having a rubber ring shape, and a truncated cone-shaped lip portion 11b integrally projecting from the inner periphery to the inward direction of the seal base portion 11a. The frustoconical lip portion 11b has a shape that is reduced in diameter toward the back side, and is branched from the seal base portion 11a.
In the seal portion 11, the seal base portion 11 a is fitted and installed on the inner peripheral surface of the receiving portion 4 in a close contact state. Therefore, you may make it provide the level | step-difference part for accommodating the seal base 11a in the internal peripheral surface of the opening part 4. As shown in FIG. In addition, a lip accommodating groove 1a is provided in the upper half of the periphery of the boundary portion between the outlet portion 3 and the receiving portion 4 of the expansion joint 1, and the diameter thereof is expanded by inserting the pipe member 5. The lip portion 11b can be accommodated. On the other hand, in order to prevent dirt and the like from staying in the above-described lip housing groove 1a, the substantially lower half of the inside of the periphery of the boundary portion between the outlet portion 3 and the receiving portion 4 of the expansion joint 1 The non-groove forming portion 1b is provided with no lip housing groove 1a. Further, the seal portion 11 is held so as not to fall off from the receiving portion 4 by a cap portion 14 attached to the outer peripheral surface of the receiving portion 4.
このキャップ部１４は、受口部４の外周面に嵌合可能な短筒状部１４ａと、この短筒状部１４ａの手前側に一体に設けられて、シール部１１の端面を軸線方向８に係止可能な端面係止部１４ｂとを有している。この端面係止部１４ｂには、管部材５を挿嵌可能な開口部１４ｃが設けられている。そして、受口部４の外周面と、キャップ部１４の短筒状部１４ａの内周面との間には相互に嵌合方向（軸線方向）に係止可能な係止部１５が周方向に複数箇所設けられている。この係止部１５は、係止用爪部などとされている。 The cap portion 14 is provided integrally with a short cylindrical portion 14a that can be fitted to the outer peripheral surface of the receiving portion 4 and a front side of the short cylindrical portion 14a, and the end surface of the seal portion 11 is disposed in the axial direction 8. And an end face locking portion 14b that can be locked to the head. The end surface locking portion 14b is provided with an opening 14c into which the pipe member 5 can be inserted. And between the outer peripheral surface of the receptacle part 4 and the inner peripheral surface of the short cylindrical part 14a of the cap part 14, the latching | locking part 15 which can be mutually latched in a fitting direction (axial direction) is the circumferential direction. Are provided at a plurality of locations. The locking portion 15 is a locking claw portion or the like.
また、上記した中間停止部１３の位置は、管部材５の最大熱伸長量を考慮して決定される。即ち、管部材５が最大に伸長した時に最終位置規制部１２にギリギリ到達する、常温時における管部材５の端部の停止位置（最適挿入深さ）として設定される。別の言い方をすると、上記した中間停止部１３は、挿入作業時における管部材５の端部の設置基準位置であり、上記した最終位置規制部１２は、熱膨張時における管部材５の端部の位置を規制するための位置である。中間停止部１３は、挿入作業時に管部材５の端部が確実に停止されて、挿入作業時の挿入力ではそれ以上深く挿入できないようなものであることが望ましい。更に、中間停止部１３は、管部材５の端部が当たった時に手ごたえが感じられるようなものであることが望ましい。更にまた、中間停止部１３は、伸縮継手１と一体に設けられることが望ましい。 Further, the position of the intermediate stop portion 13 described above is determined in consideration of the maximum amount of thermal expansion of the pipe member 5. That is, it is set as the stop position (optimum insertion depth) of the end of the tube member 5 at the normal temperature at which the tube member 5 reaches the final position restricting portion 12 when it is extended to the maximum. In other words, the above-described intermediate stop portion 13 is an installation reference position of the end portion of the tube member 5 at the time of insertion work, and the above-described final position restricting portion 12 is an end portion of the tube member 5 at the time of thermal expansion. It is a position for restricting the position of. It is desirable that the intermediate stop portion 13 is such that the end portion of the pipe member 5 is reliably stopped during the insertion operation and cannot be inserted any deeper by the insertion force during the insertion operation. Furthermore, it is desirable that the intermediate stop portion 13 is such that it feels firm when the end of the pipe member 5 hits. Furthermore, it is desirable that the intermediate stop 13 is provided integrally with the expansion joint 1.
（構成２）
伸縮継手１を構成する差口部３および受口部４を、軸線を横へ向けて配置されるものとする。即ち、伸縮継手１を横向きに使用されるものとする。そして、中間停止部１３を、差口部３の内部の少なくとも頂部またはその周辺に設けられるようにする。そして、この中間停止部１３を、奥側へ進むに従い下り勾配となる傾斜面部１７とする。
(Configuration 2)
It is assumed that the opening portion 3 and the receiving portion 4 constituting the expansion joint 1 are arranged with the axis line directed sideways. That is, the expansion joint 1 is used sideways. And the intermediate | middle stop part 13 is provided in the at least top part inside the opening part 3, or its periphery. And let this intermediate | middle stop part 13 be the inclined surface part 17 which becomes a downward slope as it goes to the back | inner side.
ここで、この横向きの伸縮継手１は、継手部材２としての上記したチーズなどの分岐合流継手(より具体的には、例えば、上記した単管式排水システムの集合管継手)における、分岐合流部分の受口部２ｂ（横向きの受口部）に対してその差口部３が挿入取付けられるものとされる。そして、管部材５は、横配管とされる。 Here, this lateral expansion joint 1 is a branch joint part in a branch joint joint such as the above-mentioned cheese as the joint member 2 (more specifically, for example, a collective pipe joint of the single pipe drainage system described above). The opening 3 is inserted and attached to the receiving portion 2b (sideways receiving portion). The pipe member 5 is a horizontal pipe.
また、傾斜面部１７は、例えば、差口部３の内部の少なくとも頂部またはその周辺に対し、図３、図４に示すように、周方向１８に所要の範囲を有して連続的に設けられるものとすることができる。この場合には、差口部３の頂部を中心として、周方向１８の両側へほぼ２０度〜４５度ずつの範囲に拡がるようなものとしている。
或いは、特に図示しないが、傾斜面部１７は、軸線方向へ延びるリブ状のものとすることができる。このリブ状の傾斜面部１７は、差口部３の頂部やその周辺に対して、１個または複数個設けるようにすることができる。
傾斜面部１７は、最適挿入深さの時に、管部材５の面取りされた端部が傾斜面部１７の途中に突き当たるようにする。この場合には、傾斜面部１７は、最適挿入深さの位置を中心として、差口部３の内部で軸線方向８の前後へ延びるものとしている。
Further, the inclined surface portion 17 is continuously provided with a required range in the circumferential direction 18 as shown in FIGS. 3 and 4, for example, at least at the top of the inside of the opening portion 3 or its periphery. Can be. In this case, centering on the top of the opening 3, it extends to a range of approximately 20 degrees to 45 degrees on both sides in the circumferential direction 18.
Or although not shown in particular, the inclined surface part 17 can be made into the rib shape extended in an axial direction. One or a plurality of the rib-like inclined surface portions 17 can be provided on the top of the opening portion 3 and its periphery.
The inclined surface portion 17 is configured such that the chamfered end portion of the pipe member 5 abuts in the middle of the inclined surface portion 17 at the optimum insertion depth. In this case, the inclined surface portion 17 extends forward and backward in the axial direction 8 inside the difference port portion 3 around the position of the optimum insertion depth.
（構成３）
最終位置規制部１２が、差口部３の内方へ張出す内周フランジ部２１とされる。そして、この内周フランジ部２１が、差口部３の底部の位置で部分的に切欠かれるようにしている（底部切欠部２２）。
(Configuration 3)
The final position restricting portion 12 is an inner peripheral flange portion 21 that protrudes inward of the opening 3. And this inner peripheral flange part 21 is made to be partially cut off at the position of the bottom part of the opening part 3 (bottom part cutout part 22).
ここで、内周フランジ部２１は、差口部３の奥端縁部に形成されると共に、管部材５の外径よりも小さな開口部２１ａを有するものとしている。 Here, the inner peripheral flange portion 21 is formed at the rear end edge portion of the opening portion 3 and has an opening portion 21 a smaller than the outer diameter of the pipe member 5.
底部切欠部２２は、差口部３の底部の位置で、差口部３の内周面と面一となるものとされる。底部切欠部２２は、差口部３の底部を中心として、周方向１８の両側へそれぞれ管部材５の半径程度以下の高さとなる範囲に亘って形成することができる。なお、この実施例では、底部切欠部２２は、大きな形状変化が生じないように、曲率を徐々に変えるように形成されている。 The bottom cutout 22 is flush with the inner peripheral surface of the opening 3 at the position of the bottom of the opening 3. The bottom cutout portion 22 can be formed on both sides in the circumferential direction 18 around the bottom portion of the opening 3 over a range having a height equal to or less than the radius of the tube member 5. In this embodiment, the bottom notch 22 is formed so as to gradually change the curvature so that a large shape change does not occur.
＜作用＞以下、この実施例の作用について説明する。 <Operation> The operation of this embodiment will be described below.
伸縮継手１は、継手部材２と、管部材５との間に設置されて、管部材５の熱伸縮を吸収することにより、管部材５や継手部材２を破損から保護するように機能する。 The expansion joint 1 is installed between the joint member 2 and the pipe member 5 and functions to protect the pipe member 5 and the joint member 2 from damage by absorbing thermal expansion and contraction of the pipe member 5.
この伸縮継手１は、差口部３を継手部材２の受口部２ａ，２ｂへ嵌合して接着することにより継手部材２に取付けた後、伸縮継手１の受口部４に管部材５の端部を挿嵌状態で挿入接続するようにして使用する。 The expansion joint 1 is attached to the joint member 2 by fitting the gage part 3 to the reception parts 2a and 2b of the joint member 2 and bonding them, and then the pipe member 5 is attached to the reception part 4 of the expansion joint 1. It is used by inserting and connecting the end portions of the two in an inserted state.
この際、受口部４の内部に設けられたシール部１１が、収容した管部材５の外周面に弾接して、管部材５の軸線方向８および半径方向９への変位に対するシールを行う。 At this time, the seal portion 11 provided in the interior of the receiving port portion 4 is elastically contacted with the outer peripheral surface of the accommodated tube member 5 to seal against displacement of the tube member 5 in the axial direction 8 and the radial direction 9.
また、差口部３の内部に設けられた最終位置規制部１２が、差口部３へ挿入された管部材５の端部が熱伸縮（この場合には熱膨張）によりそれ以上奥へ入り込まないように最終的な位置規制を行う。これにより、管部材５や継手部材２は破損から保護される。 Further, the final position restricting portion 12 provided in the inside of the opening portion 3 has the end portion of the tube member 5 inserted into the opening portion 3 deeply penetrated by thermal expansion and contraction (in this case, thermal expansion). Final position control is performed so that there is no. Thereby, the pipe member 5 and the joint member 2 are protected from damage.
＜効果＞この実施例によれば、以下のような効果を得ることができる。 <Effect> According to this embodiment, the following effects can be obtained.
（作用効果１）
差口部３の内部における最終位置規制部１２よりも手前側の位置に設けた中間停止部１３が、受口部４への管部材５の挿入作業時に、管部材５の端部の最適挿入深さにて管部材５を確実に停止させる。これにより、受口部４への管部材５の挿入作業時に、上記した最適挿入深さとなるように、位置を計って管部材５に標線を書き入れる作業をなくすと共に、標線の位置で管部材５が正確に停止されるように管部材５の停止位置を調整する作業をなくすことができる。また、中間停止部１３で停止されるまで管部材５を挿入するだけの単純作業となるので、作業効率が向上すると共に、熟練がなくても手挿入の感覚によって誰でも停止確認を行うことが可能となる。そして、中間停止部１３によって最適挿入深さで管部材５を確実に停止させることができるので、停止位置のバラ付きを無くすことができると共に、管部材５の熱伸縮の際に、継手部材２や管部材５や伸縮継手１に与える荷重を最小限に抑えることができ、継手部材２や管部材５や伸縮継手１の耐久性を向上することができる。
(Operation effect 1)
The intermediate stop portion 13 provided at a position closer to the front side than the final position restricting portion 12 inside the outlet portion 3 is optimally inserted into the end portion of the tube member 5 when the tube member 5 is inserted into the receiving portion 4. The pipe member 5 is reliably stopped at the depth. This eliminates the work of measuring the position and writing the marked line into the pipe member 5 so that the optimum insertion depth is obtained at the time of inserting the pipe member 5 into the receiving portion 4, and at the position of the marked line. The operation | work which adjusts the stop position of the pipe member 5 so that the member 5 may be stopped correctly can be eliminated. Moreover, since it becomes a simple operation | work which only inserts the pipe member 5 until it stops by the intermediate | middle stop part 13, while improving work efficiency, anyone can confirm stop by the sense of manual insertion even if it is not skilled. It becomes possible. And since the pipe member 5 can be reliably stopped by the intermediate | middle stop part 13 with the optimal insertion depth, while being able to eliminate the dispersion | variation in a stop position, in the case of the thermal expansion / contraction of the pipe member 5, the coupling member 2 In addition, the load applied to the pipe member 5 and the expansion joint 1 can be minimized, and the durability of the joint member 2, the pipe member 5, and the expansion joint 1 can be improved.
更に、最終位置規制部１２と中間停止部１３とを差口部３の内部に設けて、差口部３にて管部材５の端部の位置を規制するようにしたので、受口部４に中間停止部１３を設ける場合と比べて、伸縮継手１の全長を短くすることができる。 Further, since the final position restricting portion 12 and the intermediate stop portion 13 are provided inside the opening portion 3 and the position of the end portion of the pipe member 5 is restricted by the opening portion 3, the receiving portion 4. The total length of the expansion joint 1 can be shortened compared to the case where the intermediate stop 13 is provided in
（作用効果２）
横型の伸縮継手１における、差口部３の内部の少なくとも頂部周辺に、中間停止部１３として、奥側へ進むに従い下り勾配となる傾斜面部１７を形成することにより、受口部４への管部材５の挿入作業時に、傾斜面部１７の途中で管部材５の端部を確実に停止させることができる。また、中間停止部１３を傾斜面部１７とすることにより、挿入作業時の挿入力ではそれ以上深く挿入できないようにすることができる。更に、中間停止部１３としての傾斜面部１７は、管部材５の端部が当たった時に手ごたえを感じさせることができる。更にまた、中間停止部１３としての傾斜面部１７は、伸縮継手１と一体に形成することができる。これにより、中間停止部１３を別部材で作って伸縮継手１に取付けるようにする場合と比べて、製造コストや製造の手間を少なくすると共に、確実に機能し得るものとすることができる。
(Operation effect 2)
In the horizontal expansion joint 1, by forming an inclined surface portion 17 that becomes a downward slope as it goes to the back side as an intermediate stop portion 13 around at least the top inside the opening portion 3, a pipe to the receiving portion 4 is formed. During the operation of inserting the member 5, it is possible to reliably stop the end of the pipe member 5 in the middle of the inclined surface portion 17. Moreover, by making the intermediate | middle stop part 13 into the inclined surface part 17, it can prevent that it cannot insert any more deeply by the insertion force at the time of insertion operation. Furthermore, the inclined surface portion 17 as the intermediate stop portion 13 can feel a grip when the end portion of the pipe member 5 hits. Furthermore, the inclined surface portion 17 as the intermediate stop portion 13 can be formed integrally with the expansion joint 1. Thereby, compared with the case where the intermediate | middle stop part 13 is made with another member, and it makes it attach to the expansion joint 1, it can make it function reliably, reducing a manufacturing cost and the effort of manufacture.
また、傾斜面部１７を差口部３の内部の少なくとも頂部周辺に設けることにより、即ち、傾斜面部１７を高い位置に設けることにより、傾斜面部１７に汚物などが滞留するのを防止することができる。また、管部材５の熱伸縮時に、傾斜面部１７によって管部材５を軸線方向８および上下方向へ案内することができる。なお、中間停止部１３としての傾斜面部１７は、管部材５の伸縮に何度でも対応することができる。また、傾斜面部１７に沿った管部材５の上下方向の変位に対しては、上記したシール部１１がシールを行う。 Further, by providing the inclined surface portion 17 at least around the top of the inside of the opening portion 3, that is, by providing the inclined surface portion 17 at a high position, it is possible to prevent filth and the like from staying in the inclined surface portion 17. . Further, the pipe member 5 can be guided in the axial direction 8 and in the vertical direction by the inclined surface portion 17 when the pipe member 5 is thermally expanded and contracted. In addition, the inclined surface part 17 as the intermediate | middle stop part 13 can respond to expansion and contraction of the pipe member 5 any number of times. Further, the above-described seal portion 11 performs sealing against the vertical displacement of the pipe member 5 along the inclined surface portion 17.
（作用効果３）
最終位置規制部１２を、差口部３の内方へ張出す内周フランジ部２１とすることにより、管部材５の端部が内周フランジ部２１に突き当たることで最終位置規制を行うことが可能となる。この最終位置規制部１２によって、継手部材２を保護することができるようになる。
(Operation effect 3)
By setting the final position restricting portion 12 to the inner peripheral flange portion 21 that protrudes inward of the opening portion 3, the end position of the pipe member 5 can be restricted by abutting against the inner peripheral flange portion 21. It becomes possible. The joint member 2 can be protected by the final position restricting portion 12.
また、内周フランジ部２１を、差口部３の底部の位置で部分的に切欠くことにより、管部材５の端部が内周フランジ部２１から離れている時に、差口部３の底部に内周フランジ部２１による段差が生じて、段差に汚物などが滞留するのを防止することができる。 Further, when the inner peripheral flange portion 21 is partially cut out at the bottom portion of the opening portion 3, when the end portion of the pipe member 5 is separated from the inner peripheral flange portion 21, the bottom portion of the opening portion 3. Thus, a step due to the inner peripheral flange portion 21 is generated, and dirt and the like can be prevented from staying in the step.
以上、この発明の実施例を図面により詳述してきたが、実施例はこの発明の例示にしか過ぎないものであるため、この発明は実施例の構成にのみ限定されるものではなく、この発明の要旨を逸脱しない範囲の設計の変更等があってもこの発明に含まれることは勿論である。また、例えば、各実施例に複数の構成が含まれている場合には、特に記載がなくとも、これらの構成の可能な組合せが含まれることは勿論である。また、複数の実施例や変形例が示されている場合には、特に記載がなくとも、これらに跨がった構成の組合せのうちの可能なものが含まれることは勿論である。また、図面に描かれている構成については、特に記載がなくとも、含まれることは勿論である。更に、「等」の用語がある場合には、同等のものを含むという意味で用いられている。また、「ほぼ」「約」「程度」などの用語がある場合には、常識的に認められる範囲や精度のものを含むという意味で用いられている。 Although the embodiments of the present invention have been described in detail with reference to the drawings, the embodiments are only examples of the present invention, and the present invention is not limited to the configurations of the embodiments. Needless to say, design changes and the like within a range not departing from the gist of the invention are included in the present invention. Further, for example, when each embodiment includes a plurality of configurations, it is a matter of course that possible combinations of these configurations are included even if not specifically described. Further, when a plurality of embodiments and modifications are shown, it is needless to say that possible combinations of configurations extending over these are included even if not specifically described. Further, the configuration depicted in the drawings is of course included even if not particularly described. Further, when there is a term of “etc.”, it is used in the sense that the equivalent is included. In addition, when there are terms such as “almost”, “about”, “degree”, etc., they are used in the sense that they include those in the range and accuracy recognized by common sense.
１ 伸縮継手
３ 差口部
４ 受口部
５ 管部材
８ 軸線方向
９ 半径方向
１１ シール部
１２ 最終位置規制部
１３ 中間停止部
１７ 傾斜面部
２１ 内周フランジ部
２２ 底部切欠部
DESCRIPTION OF SYMBOLS 1 Expansion joint 3 Outlet part 4 Receiving part 5 Tube part 8 Axial direction 9 Radial direction 11 Seal part 12 Final position control part 13 Intermediate | middle stop part 17 Inclined surface part 21 Inner peripheral flange part 22 Bottom notch
Claims (3)
前記受口部が、その内部に、挿入された管部材の外周面に弾接して、管部材の軸線方向および半径方向への変位に対するシールが可能なシール部を有し、
前記差口部が、その内部に、差口部まで挿入された管部材の端部がそれ以上奥へ入り込めないように位置規制する最終位置規制部を有し、
前記差口部の内部における前記最終位置規制部よりも手前側の位置に、前記管部材の端部を最適挿入深さで停止可能な中間停止部を設けたことを特徴とする伸縮継手。 In the expansion joint capable of absorbing the thermal expansion and contraction of the pipe member inserted into the inside from the receiving portion, and integrally having the receiving portion and the receiving portion having a diameter larger than the connecting portion,
The receiving portion has a seal portion that can elastically contact the outer peripheral surface of the inserted tube member and seal against displacement in the axial direction and the radial direction of the tube member,
The said opening part has the final position regulation part which carries out position regulation so that the end of the tube member inserted to the inside of the insertion part cannot enter further inside,
An expansion joint, wherein an intermediate stop portion capable of stopping the end portion of the pipe member at an optimum insertion depth is provided at a position closer to the front side than the final position restricting portion inside the opening portion.
前記中間停止部が、差口部の内部の少なくとも頂部周辺に設けられると共に、奥側へ進むに従い下り勾配となる傾斜面部であることを特徴とする請求項１記載の伸縮継手。 The opening portion and the receiving portion are arranged with the axis line sideways,
2. The expansion joint according to claim 1, wherein the intermediate stop portion is an inclined surface portion that is provided at least in the vicinity of the top portion inside the opening portion and that is inclined downward as it advances toward the back side.
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| JP2017197985A (en) * | 2016-04-28 | 2017-11-02 | 積水化学工業株式会社 | Drain pipe joint and piping structure |
| JP2020204255A (en) * | 2020-09-09 | 2020-12-24 | 積水化学工業株式会社 | Drain pipe joint |
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