JP7474834B2

JP7474834B2 - Drain Pipe Fittings

Info

Publication number: JP7474834B2
Application number: JP2022211055A
Authority: JP
Inventors: 博史八木
Original assignee: Kubota ChemiX Co Ltd
Current assignee: Kubota ChemiX Co Ltd
Priority date: 2019-03-11
Filing date: 2022-12-28
Publication date: 2024-04-25
Anticipated expiration: 2039-03-11
Also published as: JP2020147903A; JP2023036894A; JP2023159451A; JP7534504B2; JP2024156828A; JP7204541B2

Description

この発明は、排水管継手に関し、特にたとえば、排水立て管と排水横枝管との合流部分に設けられる、排水管継手に関する。 This invention relates to a drainage pipe joint, and in particular to a drainage pipe joint that is installed at the junction of a drainage vertical pipe and a drainage horizontal branch pipe.

従来の排水管継手の一例が特許文献１に開示される。特許文献１の排水集合管（排水管継手）は、筒状胴部（管本体）の上下端部に縦排水管を接続する縦接続口（上管接続部および下管接続部）を有し、筒状胴部の周壁に横枝管を接続する横接続口（横管接続部）を有する。また、筒状胴部の内部に、縦排水管から流下してくる排水流を一方に偏らせるべく縦管軸線に対して傾斜して設けられた偏流板と、偏流板の下方において排水流に旋回を与えるべく設けられた旋回羽根とを有する。 One example of a conventional drainage pipe joint is disclosed in Patent Document 1. The drainage manifold (drainage pipe joint) in Patent Document 1 has vertical connection ports (upper pipe connection port and lower pipe connection port) that connect vertical drainage pipes to the upper and lower ends of the cylindrical body (pipe body), and has horizontal connection ports (horizontal pipe connection port) that connect horizontal branch pipes to the peripheral wall of the cylindrical body. In addition, inside the cylindrical body, there is a deflection plate that is inclined with respect to the vertical pipe axis to deflect the drainage flow flowing down from the vertical drainage pipe to one side, and a swirl vane that is provided below the deflection plate to give the drainage flow a swirl.

特開２００６－３７３７１号公報JP 2006-37371 A

特許文献１の技術では、偏流板が縦管軸線に対して傾斜する平板状に形成されるので、排水は偏流板によって直線的に偏流される。しかし、偏流させた排水が直線的に流れると、偏流板の対面側の横管接続部などに排水が流入し易くなってしまう。また、横管接続部への排水の流入を防ぐために邪魔板を設置すると、排水が邪魔板に勢いよく衝突してそこで乱流が発生する。すると、洗濯排水などが泡立ち、排水管内が閉塞して封水の跳ね出し等のトラブルが発生してしまう恐れがある。このため、より排水性能を向上させた排水管継手が望まれる。 In the technology of Patent Document 1, the deflection plate is formed as a flat plate inclined relative to the vertical pipe axis, so the wastewater is deflected in a straight line by the deflection plate. However, if the deflected wastewater flows in a straight line, it will be more likely to flow into the horizontal pipe connection section opposite the deflection plate. Furthermore, if a baffle plate is installed to prevent the wastewater from flowing into the horizontal pipe connection section, the wastewater will collide with the baffle plate with force, causing turbulence there. This can cause laundry wastewater to foam, clogging the drain pipe and causing problems such as the seal water spilling out. For this reason, a drain pipe joint with improved drainage performance is desired.

それゆえに、この発明の主たる目的は、新規な、排水管継手を提供することである。 Therefore, the primary object of this invention is to provide a novel drain pipe joint.

この発明の他の目的は、排水性能に優れる、排水管継手を提供することである。 Another object of the invention is to provide a drainage pipe joint with excellent drainage performance.

第１の発明は、上端部に形成される上管接続部と下端部に形成される下管接続部とを有する縦筒状の管本体、および管本体から側方に分岐する横管接続部を備え、下管接続部にベンド管が接続される排水管継手であって、管本体の内周面から突出する複数の偏流板を備え、偏流板は、横管接続部の軸中心よりも上方であって、かつ上管接続部に接続される上部立て管の下端よりも下方に配置され、偏流板は、平面視で管本体の軸中心に向かって膨らむ形状を有し、偏流板の上面は、基端中央部が最も高く、突出端に向かって低くなる凸状に形成され、偏流板の突出端と下面との境界周縁に所定角度のエッジ部が形成され、エッジ部の所定角度は、直角または鋭角であり、管本体の径方向における偏流板の最大部分の突出長さは、５ｍｍ以上２５ｍｍ以下であり、管本体の径方向と直交する方向における偏流板の最大部分の幅は、１０ｍｍ以上８５ｍｍ以下であり、当該排水管継手は、合成樹脂製であって、複数の部材を組み合わせることで構成されている（但し、偏流板が形成されている円筒部の下端が、横管接続部の基端側開口の上縁よりも下方に垂れ下がる場合を除く）、排水管継手である。
第２の発明は、上端部に形成される上管接続部と下端部に形成される下管接続部とを有する縦筒状の管本体、および管本体から側方に分岐する横管接続部を備え、下管接続部にベンド管が接続される排水管継手であって、管本体の内周面から突出する複数の偏流板を備え、偏流板は、横管接続部の軸中心よりも上方であって、かつ上管接続部に接続される上部立て管の下端よりも下方に配置され、偏流板は、平面視で管本体の軸中心に向かって膨らむ形状を有し、偏流板の上面は、基端中央部が最も高く、突出端に向かって低くなる凸状に形成され、かつ管本体の径方向における偏流板の最大部分の縦断面において凸曲面を有し、偏流板の突出端と下面との境界周縁に所定角度のエッジ部が形成され、エッジ部の所定角度は、直角または鋭角であり、管本体の径方向における偏流板の最大部分の突出長さは、５ｍｍ以上２５ｍｍ以下であり、管本体の径方向と直交する方向における偏流板の最大部分の幅は、１０ｍｍ以上８５ｍｍ以下であり、当該排水管継手は、合成樹脂製であって、複数の部材を組み合わせることで構成されている（但し、偏流板が形成されている円筒部の下端が、横管接続部の基端側開口の上縁よりも下方に垂れ下がる場合を除く）、排水管継手である。 The first invention is a drainage pipe joint comprising a vertical cylindrical pipe body having an upper pipe connection part formed at an upper end and a lower pipe connection part formed at a lower end, and a horizontal pipe connection part branching off laterally from the pipe body , with a bent pipe being connected to the lower pipe connection part , the joint comprising a plurality of deflection plates protruding from the inner peripheral surface of the pipe body, the deflection plates being disposed above the axial center of the horizontal pipe connection part and below the lower end of the upper vertical pipe connected to the upper pipe connection part, the deflection plates having a shape that bulges toward the axial center of the pipe body in a plan view, and the upper surface of the deflection plate being formed in a convex shape that is highest at the center of the base end and becomes lower toward the protruding end. an edge portion of a predetermined angle is formed on the boundary periphery between the protruding end of the deflector plate and the lower surface, the predetermined angle of the edge portion is a right angle or an acute angle, the protruding length of the maximum part of the deflector plate in the radial direction of the pipe body is 5 mm or more and 25 mm or less, and the width of the maximum part of the deflector plate in a direction perpendicular to the radial direction of the pipe body is 10 mm or more and 85 mm or less, and the drain pipe joint is made of synthetic resin and is constructed by combining multiple parts (except when the lower end of the cylindrical part on which the deflector plate is formed hangs down below the upper edge of the base end opening of the horizontal pipe connection part) .
The second invention is a drainage pipe joint comprising a vertical cylindrical pipe body having an upper pipe connection portion formed at an upper end and a lower pipe connection portion formed at a lower end, and a horizontal pipe connection portion branching off laterally from the pipe body , with a bend pipe being connected to the lower pipe connection portion , the joint comprising a plurality of deflection plates protruding from an inner peripheral surface of the pipe body, the deflection plates being disposed above the axial center of the horizontal pipe connection portion and below the lower end of the upper vertical pipe connected to the upper pipe connection portion, the deflection plates having a shape that bulges toward the axial center of the pipe body in a plan view, the upper surface of the deflection plates being formed in a convex shape that is highest at the center of the base end and lowers toward the protruding end, and the deflection plates in the radial direction of the pipe body are The drain pipe joint has a convex curved surface in the longitudinal section of its maximum part, an edge portion of a predetermined angle is formed at the boundary periphery between the protruding end of the deflection plate and the lower surface, the predetermined angle of the edge portion is a right angle or an acute angle, the protruding length of the maximum part of the deflection plate in the radial direction of the pipe body is 5 mm or more and 25 mm or less, and the width of the maximum part of the deflection plate in a direction perpendicular to the radial direction of the pipe body is 10 mm or more and 85 mm or less, and is made of synthetic resin and is constructed by combining multiple parts (except when the lower end of the cylindrical part on which the deflection plate is formed hangs down below the upper edge of the base end opening of the horizontal pipe connection part).

第１の発明では、排水管継手は、上管接続部および下管接続部を有する縦筒状の管本体と、管本体から側方に分岐する横管接続部とを備える。下管接続部には、ベンド管が接続される。管本体の内周面には、横管接続部の軸中心よりも上方であって、かつ上管接続部に接続される上部立て管の下端よりも下方において、複数の偏流板が設けられる。この偏流板は、平面視で管本体の軸中心に向かって膨らむ形状を有する。また、偏流板の上面は、基端中央部が最も高く、突出端に向かって低くなる凸状に形成される。さらに、偏流板の突出端と下面との境界周縁には、直角または鋭角であるエッジ部が形成される。また、管本体の径方向における偏流板の最大部分の突出長さは、５ｍｍ以上２５ｍｍ以下であり、管本体の径方向と直交する方向における偏流板の最大部分の幅は、１０ｍｍ以上８５ｍｍ以下である。さらに、この排水管継手は、合成樹脂製であって、複数の部材を組み合わせることで構成されている。但し、偏流板が形成されている円筒部の下端が、横管接続部の基端側開口の上縁よりも下方に垂れ下がる場合は除かれる。
第２の発明では、排水管継手は、上管接続部および下管接続部を有する縦筒状の管本体と、管本体から側方に分岐する横管接続部とを備える。下管接続部には、ベンド管が接続される。管本体の内周面には、横管接続部の軸中心よりも上方であって、かつ上管接続部に接続される上部立て管の下端よりも下方において、複数の偏流板が設けられる。この偏流板は、平面視で管本体の軸中心に向かって膨らむ形状を有する。また、偏流板の上面は、基端中央部が最も高く、突出端に向かって低くなる凸状に形成され、かつ管本体の径方向における偏流板の最大部分の縦断面において凸曲線を有している。さらに、偏流板の突出端と下面との境界周縁には、直角または鋭角であるエッジ部が形成される。また、管本体の径方向における偏流板の最大部分の突出長さは、５ｍｍ以上２５ｍｍ以下であり、管本体の径方向と直交する方向における偏流板の最大部分の幅は、１０ｍｍ以上８５ｍｍ以下である。さらに、この排水管継手は、合成樹脂製であって、複数の部材を組み合わせることで構成されている。但し、偏流板が形成されている円筒部の下端が、横管接続部の基端側開口の上縁よりも下方に垂れ下がる場合は除かれる。 In the first invention, the drain pipe joint includes a vertical tube-shaped pipe body having an upper pipe connection part and a lower pipe connection part, and a horizontal pipe connection part branching off from the pipe body. A bent pipe is connected to the lower pipe connection part. A plurality of deflection plates are provided on the inner peripheral surface of the pipe body above the axial center of the horizontal pipe connection part and below the lower end of the upper vertical pipe connected to the upper pipe connection part. The deflection plate has a shape that bulges toward the axial center of the pipe body in a plan view. The upper surface of the deflection plate is formed in a convex shape that is highest at the center of the base end and lowers toward the protruding end. Furthermore, an edge part that is a right angle or an acute angle is formed on the boundary periphery between the protruding end and the lower surface of the deflection plate. The protruding length of the maximum part of the deflection plate in the radial direction of the pipe body is 5 mm or more and 25 mm or less, and the width of the maximum part of the deflection plate in the direction perpendicular to the radial direction of the pipe body is 10 mm or more and 85 mm or less. Furthermore, the drain pipe joint is made of synthetic resin and is constructed by combining a plurality of members. However, this does not include the case where the lower end of the cylindrical portion on which the deflection plate is formed hangs down below the upper edge of the base end opening of the horizontal pipe connection portion.
In a second invention, the drain pipe joint comprises a vertical tubular pipe body having an upper pipe connection part and a lower pipe connection part, and a horizontal pipe connection part branching off from the pipe body. A bent pipe is connected to the lower pipe connection part. A plurality of deflection plates are provided on the inner peripheral surface of the pipe body above the axial center of the horizontal pipe connection part and below the lower end of the upper vertical pipe connected to the upper pipe connection part. The deflection plate has a shape that bulges toward the axial center of the pipe body in a plan view. In addition, the upper surface of the deflection plate is formed in a convex shape that is highest at the center of the base end and lowers toward the protruding end, and has a convex curve in the vertical cross section of the maximum part of the deflection plate in the radial direction of the pipe body. Furthermore, an edge part that is a right angle or an acute angle is formed on the boundary periphery between the protruding end and the lower surface of the deflection plate. In addition, the protruding length of the maximum part of the deflection plate in the radial direction of the pipe body is 5 mm or more and 25 mm or less, and the width of the maximum part of the deflection plate in the direction perpendicular to the radial direction of the pipe body is 10 mm or more and 85 mm or less. Furthermore, this drain pipe joint is made of synthetic resin and is constructed by combining multiple parts, except for the case where the lower end of the cylindrical part on which the deflector plate is formed hangs down below the upper edge of the base end side opening of the horizontal pipe connection part.

第１または第２の発明によれば、偏流板の下面に排水が回り込むことが防止されるので、排水をより適切に偏流させることができる。したがって、排水性能に優れる排水管継手を提供できる。また、管本体の流路断面積が小さくなり過ぎることなく、偏流板によって排水を適切に偏流できる。 According to the first or second invention, the wastewater is prevented from flowing around the underside of the deflection plate, so that the wastewater can be deflected more appropriately. Therefore, a drain pipe joint with excellent drainage performance can be provided. In addition, the flow path cross-sectional area of the pipe body is not too small, and the wastewater can be deflected appropriately by the deflection plate.

第３の発明は、第１または第２の発明に従属し、偏流板の下面は、略水平面状に形成される。 A third invention is according to the first or second invention, and a lower surface of the deflector plate is formed in a substantially horizontal plane.

第３の発明においても、偏流板の下面に排水が回り込むことが防止され、排水をより適切に偏流させることができる。 In the third aspect of the invention, the wastewater is prevented from flowing around the lower surface of the deflection plate, and the wastewater can be deflected more appropriately.

第４の発明は、第１から第３のいずれかの発明に従属し、管本体の径方向における偏流板の最大部分の突出長さは、管本体の径方向と直交する方向における偏流板の最大部分の幅よりも小さい。 A fourth invention is according to any one of the first to third inventions, and the protruding length of the maximum part of the deflection plate in the radial direction of the tube body is smaller than the width of the maximum part of the deflection plate in a direction perpendicular to the radial direction of the tube body.

この発明によれば、偏流板の下面に排水が回り込むことが防止されるので、排水をより適切に偏流させることができる。したがって、排水性能に優れる排水管継手を提供できる。 According to this invention, since the wastewater is prevented from flowing around the underside of the deflection plate, the wastewater can be deflected more appropriately, thereby providing a drainage pipe joint with excellent drainage performance.

この発明の上述の目的、その他の目的、特徴および利点は、図面を参照して行う後述の実施例の詳細な説明から一層明らかとなろう。 The above and other objects, features and advantages of the present invention will become more apparent from the detailed description of the embodiments given below with reference to the drawings.

この発明の一実施例である排水管継手を示す正面図である。FIG. 1 is a front view showing a drain pipe joint according to one embodiment of the present invention. 図１の排水管継手を示す平面図である。FIG. 2 is a plan view showing the drain pipe joint of FIG. 1 . 図２のIII-III線で切断した排水管継手の縦断面を示す第１縦断面図である。FIG. 3 is a first vertical cross-sectional view showing a vertical cross-section of the drainage pipe joint taken along line III-III in FIG. 2 . 図２のIV-IV線で切断した排水管継手の縦断面を示す第２縦断面図である。4 is a second vertical cross-sectional view showing a vertical cross-section of the drainage pipe joint taken along line IV-IV in FIG. 2. （Ａ）は図１の排水管継手が備える偏流板を示す平面図であり、（Ｂ）は偏流板を示す正面図であり、（Ｃ）は（Ｂ）のV(C)-V(C)線で切断した偏流板の縦断面を示す縦断面図である。2A is a plan view showing a deflector plate provided in the drain pipe joint of FIG. 1, FIG. 2B is a front view showing the deflector plate, and FIG. 2C is a longitudinal cross-sectional view showing the deflector plate cut along line V(C)-V(C) in FIG. 2B. 偏流板によって偏流させた排水の流れを模式的に示す図解図である。FIG. 11 is a schematic diagram showing the flow of wastewater deflected by a deflection plate; この発明の他の実施例である排水管継手を示す縦断面図である。FIG. 4 is a vertical cross-sectional view showing a drain pipe joint according to another embodiment of the present invention. 図７の排水管継手の偏流板周辺部分の縦断面を示す縦断面図である。FIG. 8 is a vertical cross-sectional view showing a vertical cross-section of a peripheral portion of a deflector plate of the drainage pipe joint of FIG. 7.

図１および図２を参照して、この発明の一実施例である排水管継手１０は、マンションおよび商業ビル等の多層階の建物において、排水立て管１００と排水横管１０２との合流部分に設けられる集合管継手である。この実施例では、内径が１００ｍｍの排水立て管１００に対して、内径が７５ｍｍの３つの排水横管１０２を合流させる排水管継手１０を例示して説明する。詳細は後述するように、排水管継手１０は、管本体１２の内周面に旋回羽根３０および偏流板３２を有し、偏流板３２で偏流させた排水を旋回羽根３０で旋回させることによって強い旋回流を発生させ、高層の建物にも対応可能な排水能力を発揮する。 Referring to Figures 1 and 2, a drain pipe joint 10 according to an embodiment of the present invention is a collecting pipe joint installed at the junction of a drain stand pipe 100 and a drain horizontal pipe 102 in a multi-story building such as an apartment building or a commercial building. In this embodiment, a drain pipe joint 10 is illustrated in which three drain horizontal pipes 102 each having an inner diameter of 75 mm join a drain stand pipe 100 having an inner diameter of 100 mm. As will be described in detail later, the drain pipe joint 10 has a swirling vane 30 and a deflection plate 32 on the inner peripheral surface of the pipe body 12, and the drainage deflected by the deflection plate 32 is swirled by the swirling vane 30 to generate a strong swirling flow, thereby demonstrating a drainage capacity that can be used in high-rise buildings.

図１－図４に示すように、排水管継手１０は、縦管状の管本体１２を備える。この実施例では、排水管継手１０は、鋳鉄などの金属製であって、その表面（内面および外面）にはエポキシ樹脂粉体などの塗装が施されている。 As shown in Figures 1 to 4, the drain pipe joint 10 has a vertical pipe body 12. In this embodiment, the drain pipe joint 10 is made of metal such as cast iron, and its surface (inner and outer surfaces) is coated with epoxy resin powder or the like.

管本体１２の上端部には、上流側の排水立て管（上部立て管）１００が接続される受口形状の上管接続部１４が形成される。管本体１２の内周面には、上管接続部１４の基端部分において周方向に延びる断面略矩形状の環状突起部１６が形成されており、この環状突起部１６の上に、上管接続部１４の内周面に沿うゴム輪１８が装着される。管本体１２の環状突起部１６の内径は、排水立て管１００の内径とほぼ同じまたは少し大きい大きさに設定される。 At the upper end of the pipe body 12, a receptacle-shaped upper pipe connection part 14 is formed to which the upstream drainage standpipe (upper standpipe) 100 is connected. At the base end of the upper pipe connection part 14, an annular protrusion part 16 with a generally rectangular cross section is formed on the inner peripheral surface of the pipe body 12, extending circumferentially. A rubber ring 18 is attached to the annular protrusion part 16 and fits along the inner peripheral surface of the upper pipe connection part 14. The inner diameter of the annular protrusion part 16 of the pipe body 12 is set to be approximately the same as or slightly larger than the inner diameter of the drainage standpipe 100.

管本体１２下端部には、下流側の排水立て管（図示せず）が接続される差口形状の下管接続部２０が形成される。下管接続部２０の内径は、排水立て管１００の内径とほぼ同じまたは少し小さい大きさに設定される。ただし、下管接続部２０は、受口形状を有していてもよいし、下管接続部２０に接続される排水立て管は、ベンド管などであってもよい。 At the lower end of the pipe body 12, a spigot-shaped lower pipe connection part 20 is formed to which a downstream drainage standpipe (not shown) is connected. The inner diameter of the lower pipe connection part 20 is set to be approximately the same as or slightly smaller than the inner diameter of the drainage standpipe 100. However, the lower pipe connection part 20 may have a receiving port shape, and the drainage standpipe connected to the lower pipe connection part 20 may be a bent pipe or the like.

また、管本体１２は、上管接続部１４の下側に、他の部分よりも拡径された拡径部２２を有している。この管本体１２の拡径部２２には、側方に分岐する３つの横管接続部２４が周方向に並ぶように形成される。３つの横管接続部２４のそれぞれは、受口形状を有しており、各横管接続部２４には、内周面に沿ってゴム輪２６が装着される。また、拡径部２２の内周面には、各横管接続部２４の基端側開口の両側に、管本体１２の軸方向（上下方向）に沿って延びるリブ状の逆流防止板２８が形成される。この逆流防止板２８は、排水横管１０２から管本体１２内に流入した排水が横管接続部２４を介して他の排水横管１０２に逆流することを防止する。ただし、逆流防止板２８は、必ずしも設けられる必要はない。 The pipe body 12 also has an enlarged diameter section 22 below the upper pipe connection section 14, which is larger in diameter than the other sections. The enlarged diameter section 22 of the pipe body 12 has three horizontal pipe connection sections 24 that branch out to the side and are arranged in a circumferential direction. Each of the three horizontal pipe connection sections 24 has a receiving port shape, and a rubber ring 26 is attached to each horizontal pipe connection section 24 along its inner peripheral surface. In addition, on the inner peripheral surface of the enlarged diameter section 22, a rib-shaped backflow prevention plate 28 is formed on both sides of the base end opening of each horizontal pipe connection section 24, extending along the axial direction (up and down direction) of the pipe body 12. This backflow prevention plate 28 prevents the wastewater that flows into the pipe body 12 from the drainage horizontal pipe 102 from flowing back into the other drainage horizontal pipes 102 via the horizontal pipe connection section 24. However, the backflow prevention plate 28 does not necessarily have to be provided.

さらに、管本体１２の内周面には、横管接続部２４よりも下方において１つの旋回羽根３０が設けられる。旋回羽根３０は、管本体１２の軸方向に対して斜め方向に延びる略平板状に形成される。このような旋回羽根３０は、管本体１２内を流下する排水に旋回力を
与えて、旋回流を発生させることで排水能力を向上させる。 Furthermore, one swirl vane 30 is provided on the inner peripheral surface of the pipe body 12 below the horizontal pipe connection portion 24. The swirl vane 30 is formed in a generally flat plate shape extending in a diagonal direction with respect to the axial direction of the pipe body 12. Such a swirl vane 30 imparts a swirling force to the wastewater flowing down inside the pipe body 12, generating a swirling flow and improving the drainage capacity.

さらにまた、管本体１２の内周面には、横管接続部２４の軸中心よりも上方（好ましくは横管接続部２４よりも上方）であって、かつ上管接続部１４に接続される排水立て管（上部立て管）１００の下端よりも下方において、周方向に沿って延びる１つの偏流板３２が設けられる。この実施例では、偏流板３２は、環状突起部１６の内周面から突出するように形成される。偏流板３２は、排水立て管１００から管本体１２内に流入した排水を偏流および減速させることによって、排水能力を向上させるものである。以下、偏流板３２の構成について具体的に説明する。 Furthermore, a single deflection plate 32 extending circumferentially is provided on the inner peripheral surface of the pipe body 12 above the axial center of the horizontal pipe connection portion 24 (preferably above the horizontal pipe connection portion 24) and below the lower end of the drainage standpipe (upper standpipe) 100 connected to the upper pipe connection portion 14. In this embodiment, the deflection plate 32 is formed so as to protrude from the inner peripheral surface of the annular protrusion portion 16. The deflection plate 32 improves the drainage capacity by deflecting and slowing down the drainage that flows from the drainage standpipe 100 into the pipe body 12. The configuration of the deflection plate 32 will be specifically described below.

図２－図４と共に図５を参照して、偏流板３２は、鏡餅の外縁部を切り取ったような形状を有する。具体的には、偏流板３２の突出端３２ａは、平面視で中央部が管本体１２の軸中心に向かって膨らむ凸曲面状に形成され、その上面３２ｂは、基端から突出端３２ａに向かうに従って低くなる凸曲面状に形成される。すなわち、偏流板３２は、上面３２ｂから突出端３２ａ（側面）にかけて全体に丸みを帯びた形状を有している。より具体的には、偏流板３２の突出端３２ａは、平面視で曲率が一定の円弧である凸曲面状に形成され、縦断面においてほぼ下向き（略鉛直方向）に延びる。また、図５(Ｃ)からよく分かるように、偏流板３２の上面３２ｂは、管本体１２の径方向における偏流板３２の最大部分の縦断面において、曲率が一定の円弧である凸曲面状に形成される。 2-4 and FIG. 5, the deflection plate 32 has a shape like a kagami mochi with the outer edge cut off. Specifically, the protruding end 32a of the deflection plate 32 is formed as a convex curved surface with the center bulging toward the axial center of the tube body 12 in a plan view, and the upper surface 32b is formed as a convex curved surface that becomes lower from the base end toward the protruding end 32a. That is, the deflection plate 32 has a rounded shape from the upper surface 32b to the protruding end 32a (side surface). More specifically, the protruding end 32a of the deflection plate 32 is formed as a convex curved surface with a constant curvature in a plan view, and extends almost downward (almost vertically) in a vertical cross section. Also, as can be clearly seen from FIG. 5(C), the upper surface 32b of the deflection plate 32 is formed as a convex curved surface with a constant curvature in a vertical cross section of the maximum part of the deflection plate 32 in the radial direction of the tube body 12.

また、偏流板３２の下面３２ｃは、略水平面状に形成され、偏流板３２の突出端３２ａと下面３２ｃとの境界周縁に所定角度のエッジ部（角部）３２ｄが形成される。エッジ部３２ｄの所定角度は、９０度以下、つまり直角または鋭角であることが好ましい。このようなエッジ部３２ｄは、水切り部として作用し、エッジ部３２ｄを直角または鋭角に形成しておくことで、偏流板３２の上面３２ｂで受けられた排水が下面３２ｃに回り込むことが防止され、排水を適切に偏流させることができる。 The lower surface 32c of the deflection plate 32 is formed in a substantially horizontal plane, and an edge portion (corner portion) 32d of a predetermined angle is formed on the periphery of the boundary between the protruding end 32a of the deflection plate 32 and the lower surface 32c. The predetermined angle of the edge portion 32d is preferably 90 degrees or less, that is, a right angle or an acute angle. Such an edge portion 32d acts as a drainage portion, and by forming the edge portion 32d at a right angle or an acute angle, the wastewater received by the upper surface 32b of the deflection plate 32 is prevented from flowing around to the lower surface 32c, and the wastewater can be properly deflected.

偏流板３２を形成する周方向位置は、旋回羽根３０とずれた位置であれば、つまり旋回羽根３０の真上以外であれば特に限定されないが、平面視で旋回羽根３０の上端部側の側方にずれた位置に形成することが好ましい。旋回羽根３０の上端部側の側方にずれた位置に偏流板３２を形成しておくことで、偏流板３２によって排水を偏流させる方向と旋回羽根３０によって排水を旋回させる方向とが概ね一致するようになり、より適切に旋回流を発生させることができる。 The circumferential position at which the deflection plate 32 is formed is not particularly limited as long as it is a position offset from the swirl vane 30, i.e., other than directly above the swirl vane 30, but it is preferable to form it at a position offset to the side of the upper end side of the swirl vane 30 in a plan view. By forming the deflection plate 32 at a position offset to the side of the upper end side of the swirl vane 30, the direction in which the wastewater is deflected by the deflection plate 32 and the direction in which the wastewater is swirled by the swirl vane 30 roughly match, making it possible to generate a more appropriate swirling flow.

偏流板３２の大きさは適宜変更可能であるが、管本体１２の径方向における偏流板３２の最大部分の突出長さＸは、管本体１２の径方向と直交する方向における偏流板３２の最大部分の幅Ｙよりも小さいことが好ましく、幅Ｙの２分の１未満であることがより好ましい。その中でも、突出長さＸは、５ｍｍ以上２５ｍｍ以下であることが好ましく、幅Ｙは、１０ｍｍ以上８５ｍｍ以下であることが好ましい。また、管本体１２の軸方向における偏流板３２の最大部分の厚みＺは、突出長さＸと同程度あることが好ましい。偏流板３２が小さ過ぎると、適切に排水を偏流させることができず、偏流板３２が大き過ぎると、管本体１２の流路断面積が小さくなり過ぎて排水能力が低下する恐れがあるからである。この実施例では、偏流板３２の突出長さＸは１２ｍｍであり、幅Ｙは５０ｍｍであり、厚みＺは１２ｍｍである。 The size of the deflection plate 32 can be changed as appropriate, but the protruding length X of the maximum part of the deflection plate 32 in the radial direction of the pipe body 12 is preferably smaller than the width Y of the maximum part of the deflection plate 32 in the direction perpendicular to the radial direction of the pipe body 12, and more preferably less than half the width Y. Among them, the protruding length X is preferably 5 mm or more and 25 mm or less, and the width Y is preferably 10 mm or more and 85 mm or less. In addition, the thickness Z of the maximum part of the deflection plate 32 in the axial direction of the pipe body 12 is preferably about the same as the protruding length X. If the deflection plate 32 is too small, the drainage cannot be properly deflected, and if the deflection plate 32 is too large, the flow path cross-sectional area of the pipe body 12 may become too small, resulting in a decrease in drainage capacity. In this embodiment, the protruding length X of the deflection plate 32 is 12 mm, the width Y is 50 mm, and the thickness Z is 12 mm.

このような偏流板３２を備える排水管継手１０では、上流側の排水立て管１００から管本体１２内に流入した排水は、偏流板３２によって偏流される。この実施例の偏流板３２は、上述のように上面３２ｂから突出端３２ａにかけて全体に丸みを帯びた形状を有しているので、図６に示すように、偏流させた排水の流れ方は、丸く広がりを持った滑らかなものとなる。滑らかに流れる排水は、角が立ち難く、泡の発生も抑制される。したがって
、管本体１２および排水立て管１００内が閉塞することを防止でき、封水の跳ね出し等のトラブルの発生を防止できる。また、直線的に偏流させる場合と比較して、丸く広がった分だけ排水の膜が薄くなるので、管本体１２内において空気が上下に流通し易くなり、排水能力を発揮させるのに好適である。 In the drain pipe joint 10 equipped with such a deflection plate 32, the drainage water flowing from the upstream drainage standpipe 100 into the pipe body 12 is deflected by the deflection plate 32. As described above, the deflection plate 32 of this embodiment has a rounded shape from the upper surface 32b to the protruding end 32a, so that the deflected drainage water flows smoothly and roundly as shown in FIG. 6. Smoothly flowing drainage water is less likely to have sharp corners and bubbles are suppressed. Therefore, the inside of the pipe body 12 and the drainage standpipe 100 can be prevented from being blocked, and problems such as the splashing of sealing water can be prevented. In addition, compared to the case of deflecting the drainage water linearly, the film of the drainage water becomes thinner by the amount of the rounded spread, which makes it easier for air to flow up and down in the pipe body 12, which is suitable for demonstrating the drainage capacity.

また、偏流板３２の突出端３２ａが縦断面において略鉛直方向に延びるので、上面３２ｂで受けられた排水は、突出端３２ａに沿って流れて下向きに案内される。したがって、偏流板３２によって偏流させた排水が横管接続部２４に入り込むことを防止できる。 In addition, since the protruding end 32a of the deflection plate 32 extends in a substantially vertical direction in the longitudinal section, the wastewater received by the upper surface 32b flows along the protruding end 32a and is guided downward. Therefore, the wastewater deflected by the deflection plate 32 can be prevented from entering the horizontal pipe connection portion 24.

さらに、偏流板３２は、平面視で中央部が管本体１２の軸中心に向かって膨らむ形状を有しているので、偏流板３２を大きくし過ぎることなく、管本体１２の内周面から離れた位置を流れる排水も偏流させることができる。偏流板３２が大きくなり過ぎると、管本体１２の流路断面積が小さくなり、空気が上下に流通し難くなるが、偏流板３２を平面視で中央部が膨らむ形状とすることで、この不具合が防止され、排水能力が阻害されることもない。 Furthermore, the deflection plate 32 has a shape in which the center bulges toward the axial center of the pipe body 12 in plan view, so that the drainage water flowing away from the inner peripheral surface of the pipe body 12 can be deflected without making the deflection plate 32 too large. If the deflection plate 32 becomes too large, the cross-sectional area of the flow path of the pipe body 12 becomes small, making it difficult for air to flow up and down, but by making the deflection plate 32 a shape in which the center bulges in plan view, this problem is prevented and the drainage capacity is not impaired.

以上のように、この実施例によれば、偏流板３２の突出端３２ａを平面視で中央部が膨らむ凸曲面状に形成し、その上面３２ｂを突出端３２ａに向かうに従って低くなる凸曲面状に形成したので、偏流板３２によって偏流させた排水の流れ方は、丸く広がりを持った滑らかなものとなる。これにより、泡の発生が抑制されると共に、排水の膜が薄くなって管本体１２内で空気が上下に流通し易くなるので、排水管継手１０の排水性能を向上させることができる。したがって、排水性能に優れる排水管継手１０を提供できる。 As described above, according to this embodiment, the protruding end 32a of the deflection plate 32 is formed as a convex curved surface with a bulge in the center in a plan view, and the upper surface 32b is formed as a convex curved surface that becomes lower toward the protruding end 32a, so that the flow of the wastewater deflected by the deflection plate 32 is rounded, wide, and smooth. This suppresses the generation of bubbles, and the wastewater film becomes thinner, making it easier for air to flow up and down within the pipe body 12, improving the drainage performance of the drain pipe joint 10. Therefore, it is possible to provide a drain pipe joint 10 with excellent drainage performance.

なお、上述の実施例では、排水管継手１０を鋳鉄などの金属製としたが、排水管継手１０は、硬質塩化ビニルなどの合成樹脂によって形成することもできる。また、複数の部材を組み合せることで排水管継手１０を構成することもできる。図７には、合成樹脂製の排水管継手１０の一例を示す。合成樹脂製の排水管継手１０であっても、基本構成は金属製のものと同じであるので、同様の部分については同じ参照番号を付し、重複する説明は省略する。 In the above embodiment, the drain pipe joint 10 is made of metal such as cast iron, but the drain pipe joint 10 can also be made of synthetic resin such as rigid polyvinyl chloride. The drain pipe joint 10 can also be constructed by combining multiple components. Figure 7 shows an example of a drain pipe joint 10 made of synthetic resin. The basic structure of the drain pipe joint 10 made of synthetic resin is the same as that of a metal one, so similar parts are given the same reference numbers and duplicate explanations are omitted.

また、図７および図８に示すように、偏流板３２の下面３２ｃには、肉盗み部（窪み部）３２ｅを形成することもできる。偏流板３２が下面３２ｃに肉盗み部３２ｅを有することによって、材料を少なくすることができ、製造時のひけを防止することができる上、排水の下面３２ｃへの回り込みをより確実に防止できる。 Also, as shown in Figures 7 and 8, a recessed portion 32e can be formed on the underside 32c of the deflection plate 32. By having the recessed portion 32e on the underside 32c of the deflection plate 32, it is possible to reduce the amount of material, prevent sink marks during manufacturing, and more reliably prevent the drainage water from flowing around the underside 32c.

また、上述の実施例では、排水管継手１０は、周方向に並ぶ３つの横管接続部２４を備えるようにしたが、横管接続部２４の数は特に限定されず、１つまたは２つ等でも構わない。また、複数の横管接続部２４を設ける場合には、必ずしも同じ高さ位置に配置する必要はなく、高さ位置を異ならせて横管接続部２４を配置しても構わない。なお、高さ位置を異ならせて横管接続部２４を配置する場合には、偏流板３２は、最上段の横管接続部２４の軸中心よりも上方に配置され、好ましくは最上段の横管接続部２４よりも上方に配置される。 In the above embodiment, the drain pipe joint 10 is provided with three horizontal pipe connection parts 24 arranged in the circumferential direction, but the number of horizontal pipe connection parts 24 is not particularly limited and may be one or two, etc. In addition, when multiple horizontal pipe connection parts 24 are provided, they do not necessarily need to be arranged at the same height position, and the horizontal pipe connection parts 24 may be arranged at different height positions. In addition, when the horizontal pipe connection parts 24 are arranged at different height positions, the deflection plate 32 is arranged above the axial center of the uppermost horizontal pipe connection part 24, and is preferably arranged above the uppermost horizontal pipe connection part 24.

さらに、上述の実施例では、旋回羽根３０および偏流板３２をそれぞれ１つずつ設けたが、旋回羽根３０を２つ以上設けることもできるし、偏流板３２を２つ以上設けることもできる。 Furthermore, in the above-mentioned embodiment, one swirl vane 30 and one deflection plate 32 are provided, but two or more swirl vanes 30 can be provided, and two or more deflection plates 32 can be provided.

なお、上で挙げた寸法などの具体的数値および具体的形状などは、いずれも単なる一例であり、製品の仕様などの必要に応じて適宜変更可能である。 Note that the specific values and shapes of the dimensions given above are merely examples and can be changed as necessary depending on the product specifications, etc.

１０ …排水管継手
１２ …管本体
１４ …上管接続部
２０ …下管接続部
２４ …横管接続部
３０ …旋回羽根
３２ …偏流板
３２ａ …偏流板の突出端
３２ｂ …偏流板の上面
３２ｃ …偏流板の下面
３２ｄ …偏流板のエッジ部
３２ｅ …偏流板の肉盗み部
１００ …排水立て管
１０２ …排水横管 REFERENCE SIGNS LIST 10 drain pipe joint 12 pipe body 14 upper pipe connection part 20 lower pipe connection part 24 horizontal pipe connection part 30 swirl vane 32 deflector plate 32a protruding end of deflector plate 32b upper surface of deflector plate 32c lower surface of deflector plate 32d edge part of deflector plate 32e reduced thickness part of deflector plate 100 drain stand pipe 102 drain horizontal pipe

Claims

A drainage pipe joint comprising a vertical tube-shaped pipe body having an upper pipe connection part formed at an upper end and a lower pipe connection part formed at a lower end, and a horizontal pipe connection part branching off from the pipe body to a side , and a bend pipe is connected to the lower pipe connection part ,
A plurality of deflection plates protruding from the inner circumferential surface of the pipe body are provided,
the deflector plate is disposed above an axial center of the horizontal pipe connection portion and below a lower end of the upper vertical pipe connected to the upper pipe connection portion,
The deflection plate has a shape that bulges toward the axial center of the tube body in a plan view,
The upper surface of the deflector plate is formed in a convex shape, the height being highest at the center of the base end and decreasing toward the protruding end,
An edge portion having a predetermined angle is formed on the boundary periphery between the protruding end and the lower surface of the deflection plate,
The predetermined angle of the edge portion is a right angle or an acute angle,
The protruding length of the maximum portion of the deflection plate in the radial direction of the tube body is 5 mm or more and 25 mm or less,
The width of the maximum part of the deflection plate in a direction perpendicular to the radial direction of the tube body is 10 mm or more and 85 mm or less,
The drain pipe joint is made of synthetic resin and is constructed by combining multiple parts (except in the case where the lower end of the cylindrical portion on which the deflection plate is formed hangs down below the upper edge of the base end opening of the horizontal pipe connection portion).

A drainage pipe joint comprising a vertical tube-shaped pipe body having an upper pipe connection part formed at an upper end and a lower pipe connection part formed at a lower end, and a horizontal pipe connection part branching off from the pipe body to a side , and a bend pipe is connected to the lower pipe connection part ,
A plurality of deflection plates protruding from the inner circumferential surface of the pipe body are provided,
the deflector plate is disposed above an axial center of the horizontal pipe connection portion and below a lower end of the upper vertical pipe connected to the upper pipe connection portion,
The deflection plate has a shape that bulges toward the axial center of the tube body in a plan view,
the upper surface of the deflection plate is formed in a convex shape that is highest at the center of the base end and becomes lower toward the protruding end, and has a convex curve in a vertical cross section of the maximum portion of the deflection plate in the radial direction of the pipe body;
An edge portion having a predetermined angle is formed on the boundary periphery between the protruding end and the lower surface of the deflection plate,
The predetermined angle of the edge portion is a right angle or an acute angle,
The protruding length of the maximum portion of the deflection plate in the radial direction of the tube body is 5 mm or more and 25 mm or less,
The width of the maximum part of the deflection plate in a direction perpendicular to the radial direction of the tube body is 10 mm or more and 85 mm or less,
The drain pipe joint is made of synthetic resin and is constructed by combining multiple parts (except in the case where the lower end of the cylindrical portion on which the deflection plate is formed hangs down below the upper edge of the base end opening of the horizontal pipe connection portion).

The drain pipe joint according to claim 1 or 2, wherein the underside of the deflector plate is formed in a substantially horizontal plane.

The drain pipe joint according to any one of claims 1 to 3, wherein the protruding length of the maximum part of the deflection plate in the radial direction of the pipe body is smaller than the width of the maximum part of the deflection plate in the direction perpendicular to the radial direction of the pipe body.