JP2549744Z - - Google Patents
Info
- Publication number
- JP2549744Z JP2549744Z JP2549744Z JP 2549744 Z JP2549744 Z JP 2549744Z JP 2549744 Z JP2549744 Z JP 2549744Z
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- split ring
- joint
- fitted
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000002093 peripheral Effects 0.000 claims description 15
- 238000003780 insertion Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 241000217377 Amblema plicata Species 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 241000282693 Cercopithecidae Species 0.000 description 1
- 210000001513 Elbow Anatomy 0.000 description 1
- 210000001503 Joints Anatomy 0.000 description 1
- 240000002129 Malva sylvestris Species 0.000 description 1
- 235000006770 Malva sylvestris Nutrition 0.000 description 1
- 235000010703 Modiola caroliniana Nutrition 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
Description
【考案の詳細な説明】
【0001】
【産業上の利用分野】
本考案は給湯、給水管等の管材を接合する際に使用される管継手に関する。
【0002】
【従来の技術】
合成樹脂管もしくは金属管の内面又は内外両周面を合成樹脂で被覆した複合管
を用いて、給湯管、給水管を配管する際に使用される管継手としては、実開昭61
-22991号公報に開示されているように、継手本体と締付け部材と袋ナットからな
り、袋ナットを締付けることによって、継手本体と接続管とが液密にシールされ
るものが公知である。
【0003】
このような管継手に於いては、継手本体の一端に設けられた円筒状案内部と締
付け部材との間隙に接続管の端部が挿入され、袋ナットを締付けることにより、
締付け部材が縮径されて、接続管は継手本体の案内部と締付け部材とにより挟持
されると共に、接続管が継手本体の案内部外周面に設けられた凹溝内のシール部
材に圧着されて、接続管と継手本体の案内部との間が液密にシールされる。
【0004】
【考案が解決しようとする課題】
従って、接続管の端部が継手本体の工具係合部端面に当接する迄充分に挿入さ
れていない状態で、袋ナットで締付けられると、通水テスト等を行った場合に接
続管が管継手から抜けるおそれがあった。
【0005】
本考案は、上記の課題を解決し、接続管が完全に接続された状態で、接続管の
端部位置を確認出来る管継手を提供することを目的とする。
【0006】
【課題を解決するための手段】
本考案の管継手は、接続管に内嵌される円筒状の案内部及び該案内部の基端に
連設されて外周面に締付け工具が係合される工具係合部を有する継手本体と、該
継手本体の案内部に接続管が挿入される間隙を有して同心状に外嵌され、全長に
亙る軸方向の間隙を有して縮径可能となされた略円筒状の割り環と、該割り環に
外嵌され、ボルトを締付けることによって内方に押圧される押え環とからなり、
前記割り環の工具係合部端面に近接する先端付近に接続管挿入確認切欠部が、前
記間隙に面する一端を含む3箇所に設けられていることを特徴とする。
【0007】
本考案の管継手の形状は、特に限定されず、後述する雄螺子アダプターの外、
雌螺子アダプター、ソケット、エルボ、チーズ等にも適用可能である。
【0008】
本考案に用いられる割り環の材質は、特に限定されず、金属もしくは合成樹脂
の何れでもよいが、例えば黄銅等の銅系合金が好適に使用される。
【0009】
本考案に用いられる割り環の接続管挿入確認切欠部の数は、限られた空間内で
行われる建物内に於ける配管作業時にも、どの角度からでも視認出来るよう、等
間隔に3箇所設けられる。又、その形状、大きさは、特に限定されないが、内部
を目視し易いよう、一辺2乃至10mm程度の角形とされるのが好ましい。
【0010】
本考案に用いられる割り環の外周面には、押え環が軸方向に滑動しないよう、
周方向に沿って押え環が嵌着される凹溝が刻設されるのが好ましい。
【0011】
本考案に用いられるボルトとしては、六角孔付ボルトを使用するのが、その頭
部から六角レンチを用いて締込むことが出来、モンキーレンチを使用する場合に
比して狭小な空間に於いても施工が可能であるので好ましい。
【0012】
本考案に用いられる押え環の過大な締込みを避ける為には、ボルトに外嵌して
ワッシャを挿入するのが好ましい。
【0013】
【作用】
本考案の管継手は、継手本体と割り環と押え環とからなり、前記割り環の工具
係合部端面に近接する先端付近に接続管挿入確認切欠部が、前記割り環の有する
間隙に面する一端を含む3箇所に設けられているから、接続管が継手本体の工具
係合部端面に近接する迄充分に挿入されているかどうかを、締めつけた後でも切
欠部から容易に視認することが出来る。
【0014】
【実施例】
次に、本考案の管継手を図面の実施例を参照して更に説明する。
図1は、本考案の管継手の使用状態を示す部分断面図、図2は図1のII−II線
に於ける断面図、図3は本考案の管継手に使用される割り環の斜視図である。
本考案の管継手は、継手本体1と割り環2と押え環3とからなる雄螺子アダプ
ターである。
継手本体1は、その軸方向の一端に円筒状の案内部11を有し、該案内部11は接
続すべき接続管5に内嵌され得るように、その外径が接続管5の内径より稍小さ
くなされている。案内部11の外周面には、周方向に凹溝12が全周に亙って刻設さ
れており、凹溝12内には、ゴム等の弾性体からなる環状のシール材13が嵌合され
ている。凹溝12より先端寄りの外周面には、周方向に滑り止めの環状の凸部14が
全周に亙って刻設されている。
【0015】
案内部11の基端には、案内部11と同心状で大径となされ、スパナ等の締付け工
具が係合され得るよう、外周面が六角形状となされた工具係合部15が連設されて
いる。
工具係合部15には、バルブ等の機器や他の管継手に接続される接続部16が、案
内部11とは反対側に連設されており、接続部16は、工具係合部15と同心状で小径
となされており、その外周面には雄螺子が刻設されている。
【0016】
割り環2は、継手本体1の案内部11との間に所定の間隔を置いて同心状に外嵌
される略円筒状をなしており、全長に亙る軸方向の間隙21を有して縮径可能とな
されている。前記工具係合部15端面に当接する先端には、角形の接続管挿入確認
切欠部22が、間隙21に面する一端を含む3箇所に略等間隔に設けられている。割
り環2の先端部内面には、係合凸部25が突設され、継手本体1の工具係合部15端
面に沿って設けられた凹溝17に係合されている。割り環2の外周面には、周方向
に沿って押え環3が嵌着される凹溝23が刻設されており、内周面には、断面略半
円形の突条24が3本周方向に並設されている。
【0017】
押え環3は、割り環2の凹溝23に嵌合される略円筒部31の両端に相対向する締
付け部32が連設されており、締付け部32に螺着されたボルト4を締付けることに
よって割り環2を内方に押圧し、接続管5と継手本体1の案内部11との間が液密
にシールされるようなされている。
【0018】
本考案の管継手の使用に際しては、継手本体1の接続部16が、工具係合部15の
外周面にスパナ等の締付け工具を係合させて回転させることにより、接続すべき
機器や他の管継手の螺子部に捩じ込まれる。
【0019】
次に、案内部11と割り環2との間隙に、接続管5を先端が工具係合部15の端面
に近接する迄挿入する。このとき、接続管5の先端が工具係合部15の端面に近接
する迄充分に挿入されたかどうかは、接続管挿入確認切欠部22により、視認され
る。
【0020】
この状態で、押え環3の締付け部32に螺着された六角孔付ボルト4を六角レン
チを用いて締込めば、割り環2は縮径されて、接続管5の外周面を略全周に亙っ
て内方に押圧し、案内部11の外周面の凹溝12内に嵌合されたシール材13に圧着さ
れる。その結果、接続管5は継手本体1の案内部11と割り環2との間に挟持され
、接続管5の内周面と案内部11の外周面との間がシール材13によって液密にシー
ルされる。
【0021】
【考案の効果】
本考案の管継手は、叙上の通り構成されているので、接続管が継手本体の工具
係合部端面に近接する迄充分に挿入されているかどうかを、ボルトを締めつけた
後に於いても接続管挿入確認切欠部から容易に視認することが出来、接続管の挿
入不足によって、接続管の抜けが発生し、漏水によって、室内の天井、壁、床等
の内装材を汚損することがない。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint used for joining pipes such as hot water supply and water supply pipes. 2. Description of the Related Art A pipe joint used for piping a hot water supply pipe and a water supply pipe using a composite pipe in which the inner surface or both inner and outer peripheral surfaces of a synthetic resin pipe or a metal pipe are coated with a synthetic resin is known. , Shokai 61
As disclosed in Japanese Patent Application Laid-Open No. 22991, it is known that a joint body, a connection pipe and a joint body are tightly sealed by tightening the cap nut. In such a pipe joint, an end of the connection pipe is inserted into a gap between a cylindrical guide provided at one end of the joint body and a tightening member, and a cap nut is tightened.
The fastening member is reduced in diameter, the connecting pipe is sandwiched between the guide part of the joint body and the fastening member, and the connecting pipe is pressed against the seal member in the concave groove provided on the outer peripheral surface of the guide part of the joint body. The space between the connecting pipe and the guide portion of the joint body is sealed in a liquid-tight manner. [0004] Accordingly, when the connection pipe is not sufficiently inserted until the end of the connection pipe comes into contact with the end face of the tool engagement portion of the joint main body, when the connection pipe is tightened with the cap nut, water flows. When a test or the like was performed, there was a possibility that the connecting pipe would come off from the pipe joint. [0005] An object of the present invention is to solve the above-mentioned problem and to provide a pipe joint that can confirm an end position of a connection pipe in a state where the connection pipe is completely connected. The pipe joint according to the present invention has a cylindrical guide portion fitted inside the connecting pipe and a fastening tool connected to the base end of the guide portion and connected to the outer peripheral surface thereof. A joint body having a tool engaging portion to be fitted, and a concentric outer fitting with a gap into which a connecting pipe is inserted into a guide portion of the joint body, and a shrinkage having an axial gap over the entire length. It consists of a substantially cylindrical split ring that is made to be diametrical, and a press ring that is fitted onto the split ring and pressed inward by tightening bolts,
A notch for confirming connection pipe insertion is provided at three places including one end facing the gap near the tip end of the split ring near the end face of the tool engaging part. [0007] The shape of the pipe joint of the present invention is not particularly limited.
It is also applicable to female screw adapters, sockets, elbows, cheeses and the like. [0008] The material of the split ring used in the present invention is not particularly limited, and may be a metal or a synthetic resin. For example, a copper-based alloy such as brass is preferably used. [0009] The number of notches for confirming the insertion of the connecting pipe of the split ring used in the present invention is set at equal intervals so that the pipe can be visually recognized from any angle even when performing piping work in a building that is performed in a limited space. There are three places. Further, the shape and size are not particularly limited, but are preferably a square having a side of about 2 to 10 mm so that the inside can be easily viewed. [0010] On the outer peripheral surface of the split ring used in the present invention, the presser ring does not slide in the axial direction.
It is preferable that a concave groove into which the press ring is fitted is formed along the circumferential direction. As the bolt used in the present invention, a hexagon socket head bolt is used, which can be tightened with a hexagon wrench from the head thereof, and has a smaller space than when a monkey wrench is used. It is preferable because the construction is possible. In order to avoid excessive tightening of the holding ring used in the present invention, it is preferable to insert a washer by externally fitting the bolt. The pipe joint according to the present invention comprises a joint body, a split ring and a presser ring, and the notch for confirming insertion of a connecting pipe near the end of the split ring near the end face of the tool engaging portion. Since it is provided at three places including one end facing the gap of the ring, it is determined whether or not the connection pipe is sufficiently inserted until it is close to the end face of the tool engagement portion of the joint body from the notch even after tightening. It can be easily visually recognized. Next, the pipe joint of the present invention will be further described with reference to the embodiments shown in the drawings. FIG. 1 is a partial cross-sectional view showing a use state of the pipe joint of the present invention, FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1, and FIG. 3 is a perspective view of a split ring used in the pipe joint of the present invention. FIG. The pipe joint according to the present invention is a male screw adapter including a joint body 1, a split ring 2 and a holding ring 3. The joint body 1 has a cylindrical guide portion 11 at one end in the axial direction, and the outer diameter of the joint portion 1 is smaller than the inner diameter of the connection tube 5 so that the guide portion 11 can be fitted inside the connection tube 5 to be connected. It is made a little smaller. On the outer peripheral surface of the guide portion 11, a concave groove 12 is engraved along the entire circumference in a circumferential direction, and an annular seal material 13 made of an elastic material such as rubber is fitted into the concave groove 12. Have been. On the outer peripheral surface closer to the front end than the concave groove 12, a non-slip annular convex portion 14 is engraved over the entire circumference in the circumferential direction. At the base end of the guide portion 11, a tool engaging portion 15 having a large diameter concentric with the guide portion 11 and having a hexagonal outer peripheral surface so that a tightening tool such as a spanner can be engaged. It is installed continuously. The tool engaging portion 15 is provided with a connecting portion 16 connected to devices such as valves and other pipe joints on a side opposite to the guide portion 11. It has a small diameter concentrically with a male screw. The split ring 2 has a substantially cylindrical shape that is concentrically fitted at a predetermined interval between the split ring 2 and the guide portion 11 of the joint body 1, and has an axial gap 21 over the entire length. The diameter can be reduced. At the tip end which comes into contact with the end face of the tool engaging portion 15, rectangular connection pipe insertion notches 22 are provided at substantially equal intervals at three places including one end facing the gap 21. An engagement projection 25 is protruded from the inner surface of the distal end portion of the split ring 2 and is engaged with a concave groove 17 provided along the end surface of the tool engagement portion 15 of the joint body 1. On the outer peripheral surface of the split ring 2, a concave groove 23 into which the presser ring 3 is fitted is engraved along the circumferential direction, and on the inner peripheral surface, three ridges 24 having a substantially semicircular cross section are formed. It is juxtaposed in the direction. The holding ring 3 has a pair of opposed tightening portions 32 connected to both ends of a substantially cylindrical portion 31 fitted into the concave groove 23 of the split ring 2, and a bolt 4 screwed to the tightening portion 32. To press the split ring 2 inward, so that the space between the connecting pipe 5 and the guide portion 11 of the joint body 1 is sealed in a liquid-tight manner. When using the pipe joint of the present invention, the connecting portion 16 of the joint main body 1 is rotated by engaging a tightening tool such as a wrench on the outer peripheral surface of the tool engaging portion 15 and rotating the device. And other fittings. Next, the connection pipe 5 is inserted into the gap between the guide portion 11 and the split ring 2 until the tip thereof approaches the end face of the tool engagement portion 15. At this time, whether or not the connection pipe 5 has been sufficiently inserted until the tip of the connection pipe 5 approaches the end face of the tool engagement portion 15 is visually recognized by the connection pipe insertion confirmation notch 22. In this state, if the hexagonal bolt 4 screwed to the tightening portion 32 of the holding ring 3 is tightened with a hexagonal wrench, the split ring 2 is reduced in diameter, and the outer peripheral surface of the connection pipe 5 is removed. It is pressed inward over substantially the entire circumference, and is pressed against the sealing material 13 fitted in the concave groove 12 on the outer peripheral surface of the guide portion 11. As a result, the connecting pipe 5 is sandwiched between the guide portion 11 of the joint body 1 and the split ring 2, and the space between the inner peripheral surface of the connecting pipe 5 and the outer peripheral surface of the guide portion 11 is made liquid-tight by the sealing material 13. Sealed. Since the pipe joint of the present invention is configured as described above, it is determined whether or not the connecting pipe is inserted sufficiently until it comes close to the end face of the tool engaging portion of the joint body. Even after tightening, the connection pipe insertion confirmation notch can be easily seen from the notch, and the connection pipe may drop out due to insufficient insertion of the connection pipe, and water leakage will cause the interior of ceiling, wall, floor, etc. in the room The material is not stained.
【図面の簡単な説明】 【図1】 本考案の管継手の使用状態を示す部分断面図である。 【図2】 図1のII−II線に於ける断面図である。 【図3】 図1に示される管継手に使用される割り環の斜視図である。 【符号の説明】 1 継手本体 2 割り環 3 押え環 4 ボルト 5 接続管 11 案内部蓋体 15 工具係合部 21 間隙 22 接続管挿入確認切欠部[Brief description of the drawings] FIG. FIG. 4 is a partial cross-sectional view illustrating a use state of the pipe joint of the present invention. FIG. 2 FIG. 2 is a sectional view taken along line II-II in FIG. 1. FIG. 3 It is a perspective view of the split ring used for the pipe joint shown in FIG. [Explanation of symbols] 1 Fitting body 2 split ring 3 Foot ring 4 bolts 5 Connecting pipe 11 Guide lid 15 Tool engaging part 21 gap 22 Connection tube insertion confirmation notch
Claims (1)
されて外周面に締付け工具が係合される工具係合部を有する継手本体と、該継手
本体の案内部に接続管が挿入される間隙を有して同心状に外嵌され、全長に亙る
軸方向の間隙を有して縮径可能となされた略円筒状の割り環と、該割り環に外嵌
され、ボルトを締付けることによって内方に押圧される押え環とからなり、前記
割り環の工具係合部端面に近接する先端付近に接続管挿入確認切欠部が、前記間
隙に面する一端を含む3箇所に設けられていることを特徴とする管継手。[Claim 1] A cylindrical guide portion to be fitted in a connecting pipe and a tool engagement continuously provided at a base end of the guide portion and having a fastening tool engaged with an outer peripheral surface thereof. A joint body having a portion, and a guide body of the joint body, which is fitted concentrically to the outside with a gap into which the connecting pipe is inserted, and has an axial gap extending over the entire length so that the diameter can be reduced. A connecting ring, which is formed of a cylindrical split ring, and a press ring which is fitted on the split ring and pressed inward by tightening a bolt, and a connecting pipe is inserted near a tip of the split ring close to an end face of a tool engaging portion. confirmation cut-out portion, the inter
A pipe joint characterized by being provided at three places including one end facing a gap .
Family
ID=
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