JP2017197985A - Drain pipe joint and piping structure - Google Patents
Drain pipe joint and piping structure Download PDFInfo
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Abstract
Description
この発明は、排水管継手および配管構造に関するものである。 The present invention relates to a drainage pipe joint and a piping structure.
集合住宅やオフィスビルなどには、給水設備や排水設備が設けられる。このうちの排水設備は、建物の各階層を上下に貫く縦管と、各階層内に設置される横管とを、排水管継手を用いて接続した配管構造を備えている。 Water supply facilities and drainage facilities are installed in apartment buildings and office buildings. Among these, the drainage equipment has a piping structure in which a vertical pipe that penetrates each level of a building is connected to a horizontal pipe installed in each level using a drainage pipe joint.
そして、上記した排水管継手は、縦管と横管との接続部分に設けられると共に、少なくとも、その上端部に縦管接続部を有すると共に、側面に横管接続部を有する上部継手部材と、下端部に縦管接続部を有する下部継手部材と、下部継手部材の内側に設置されて、内部を流れる流体に旋回流を与える旋回羽根を有する羽根部材と、を備えたものとされている（例えば、特許文献１参照）。 And the drainage pipe joint described above is provided at the connection portion between the vertical pipe and the horizontal pipe, and at least the upper joint member having the vertical pipe connection part at the upper end and the horizontal pipe connection part on the side surface, A lower joint member having a vertical pipe connecting portion at the lower end portion, and a blade member having a swirl blade installed inside the lower joint member and imparting a swirl flow to the fluid flowing inside the lower joint member ( For example, see Patent Document 1).
しかしながら、このような排水管継手および配管構造には、各部に細かい隙間が生じるのを防止することは困難であるが、このような細かい隙間があると、この細かい隙間が水路（みずみち）となって、水漏れが発生するおそれがあるため、細かい隙間を可能な限りなくしたいという要望があった。 However, in such a drainage pipe joint and piping structure, it is difficult to prevent the formation of fine gaps in each part. Thus, there is a possibility that water leakage may occur, and there has been a demand for eliminating as small a gap as possible.
例えば、上記した排水管継手の場合、上部継手部材および羽根部材と、下部継手部材との間が嵌合部となっているが、この嵌合部が水路になるおそれがある。また、下部継手部材の床スラブへの埋設部なども、水路になるおそれがある。 For example, in the case of the drain pipe joint described above, the fitting portion is between the upper joint member and the blade member and the lower joint member, but this fitting portion may become a water channel. In addition, a portion of the lower joint member embedded in the floor slab may become a water channel.
そこで、本発明は、上記した問題点を解決することを、主な目的としている。 Accordingly, the main object of the present invention is to solve the above-described problems.
上記課題を解決するために、本発明は、
縦管と横管との接続部分に設けられて、
少なくとも、その上端部に縦管接続部を有すると共に、側面に横管接続部を有する上部継手部材と、
下端部に縦管接続部を有する下部継手部材と、
該下部継手部材の内側に設置されて、内部を流れる流体に旋回流を与える旋回羽根を有する羽根部材と、を備えた排水管継手において、
前記上部継手部材と、下部継手部材と、羽根部材とが、それぞれ樹脂製の射出成形品で構成され、
前記下部継手部材の、上端側外周面または下端側外周面の少なくとも一方に、樹脂の注入ゲートが設けられていることを特徴とする。
In order to solve the above problems, the present invention provides:
Provided at the connecting part of the vertical and horizontal pipes,
At least an upper joint member having a vertical pipe connection portion at its upper end and a horizontal pipe connection portion on its side surface;
A lower joint member having a vertical pipe connecting portion at the lower end,
A drainage pipe joint provided with a swirl member installed inside the lower joint member and having a swirl vane that imparts a swirl flow to the fluid flowing inside,
The upper joint member, the lower joint member, and the blade member are each composed of a resin injection molded product,
A resin injection gate is provided on at least one of the upper end side outer peripheral surface and the lower end side outer peripheral surface of the lower joint member.
本発明によれば、上記構成によって、各部の水漏れを防止することができる。 According to the present invention, the above configuration can prevent water leakage at each part.
以下、本実施の形態を、図面を用いて詳細に説明する。
図１〜図８は、この実施の形態を説明するためのものである。
Hereinafter, the present embodiment will be described in detail with reference to the drawings.
1 to 8 are for explaining this embodiment.
＜構成＞以下、構成について説明する。 <Configuration> The configuration will be described below.
集合住宅やオフィスビルなどに排水設備を設ける。この排水設備は、図１に示すように、建物１の各階層２を上下に貫く縦管３と、各階層２内に設置される横管４とを、排水管継手５を用いて接続した配管構造６を備えたものとする。 Drainage facilities will be installed in apartment buildings and office buildings. As shown in FIG. 1, this drainage facility connects a vertical pipe 3 penetrating up and down each level 2 of a building 1 and a horizontal pipe 4 installed in each level 2 using a drainage pipe joint 5. It is assumed that a piping structure 6 is provided.
そして、上記した排水管継手５は、縦管３と横管４との接続部分に設けられるものであり、図２（または図３）に示すように、少なくとも、その上端部に縦管接続部１１を有すると共に、側面に横管接続部１２を有する上部継手部材１３と、下端部に縦管接続部１５を有する下部継手部材１６と、下部継手部材１６の内側に設置されて、内部を流れる流体に旋回流を与える旋回羽根１８を有する羽根部材１９と、を備えたものとされる。 And the above-mentioned drainage pipe joint 5 is provided in the connection part of the vertical pipe 3 and the horizontal pipe 4, and as shown in FIG. 2 (or FIG. 3), at least the vertical pipe connection part in the upper end part. 11, an upper joint member 13 having a lateral pipe connection portion 12 on the side surface, a lower joint member 16 having a vertical pipe connection portion 15 at a lower end portion, and an inner side of the lower joint member 16 to flow inside. And a blade member 19 having a swirl blade 18 that imparts a swirl flow to the fluid.
ここで、排水管継手５は、ほぼ上下方向へ延びる筒状のものとされる。縦管接続部１１，１５は、文字通り、縦管３を接続するためのものであり、横管接続部１２は、文字通り、横管４を接続するためのものである。 Here, the drain pipe joint 5 has a cylindrical shape extending substantially in the vertical direction. The vertical tube connecting portions 11 and 15 are literally for connecting the vertical tube 3, and the horizontal tube connecting portion 12 is literally for connecting the horizontal tube 4.
上部継手部材１３の縦管接続部１１には、縦管３の熱伸縮の影響を吸収可能な伸縮継手２１（図２参照）が接着固定されている。この伸縮継手２１は、短い筒状の継手本体２２の内部に、縦管３の熱伸縮による変位を許容可能なシール部材２３を取付けたものとされる。このシール部材２３は、少なくとも、リング状のシール本体２３ａと、このシール本体２３ａの内周部分から内方へ向けて傾斜するように一体に突設されたリップ部２３ｂとを有するものとされる。継手本体２２の上端部には、シール部材２３を脱落できないように保持するためのリング状のキャップ部２４が取付けられる。なお、継手本体２２の下部に対し、ほぼ下方へ延びる旋回羽根などを設けるようにしても良い。 An expansion joint 21 (see FIG. 2) capable of absorbing the influence of thermal expansion and contraction of the vertical pipe 3 is bonded and fixed to the vertical pipe connection portion 11 of the upper joint member 13. The expansion joint 21 is configured such that a seal member 23 capable of allowing displacement due to thermal expansion and contraction of the vertical tube 3 is attached to the inside of a short cylindrical joint body 22. The seal member 23 includes at least a ring-shaped seal body 23a and a lip portion 23b that protrudes integrally from the inner peripheral portion of the seal body 23a so as to be inclined inward. . A ring-shaped cap portion 24 is attached to the upper end portion of the joint body 22 to hold the seal member 23 so that it cannot be dropped. In addition, you may make it provide the turning blade | wing etc. extended below substantially with respect to the lower part of the coupling main body 22. FIG.
また、横管接続部１２は、横管４を接着固定可能な受口部または差口部とされる。横管接続部１２を受口部とした場合、横管接続部１２の内部には、横管４の挿入位置を規制するためのストッパ１２ａが設けられる。なお、横管接続部１２には、上記と同様の伸縮継手２１を取付けて使用することもできる。また、上部継手部材１３に複数の横管接続部１２が設けられている場合には、上部継手部材１３の内部に、横管接続部１２から流入した排水が他の横管接続部１２へ逆流するのを防止するための逆流防止リブ１３ａが設けられる。 Further, the horizontal pipe connecting part 12 is a receiving part or a differential part capable of bonding and fixing the horizontal pipe 4. When the horizontal tube connecting portion 12 is a receiving portion, a stopper 12 a for restricting the insertion position of the horizontal tube 4 is provided inside the horizontal tube connecting portion 12. In addition, the horizontal pipe connection part 12 can also be used by attaching the expansion joint 21 similar to the above. Further, when the upper joint member 13 is provided with a plurality of horizontal pipe connection portions 12, the waste water flowing from the horizontal pipe connection portion 12 flows back into the other horizontal pipe connection portions 12 inside the upper joint member 13. Backflow prevention ribs 13a are provided to prevent this.
図１に示すように、床スラブ１４には、排水管継手５（の下部継手部材１６）を通すための貫通穴２６が設けられる。この貫通穴２６はモルタル２７で埋め戻される。 As shown in FIG. 1, the floor slab 14 is provided with a through hole 26 for passing the drainage pipe joint 5 (the lower joint member 16 thereof). This through hole 26 is backfilled with mortar 27.
下部継手部材１６は、上下端部にそれぞれ円筒状の部分（受口部または差口部）を有すると共に、これらの円筒状の部分の間に下方へ向けて縮径するテーパ形状の部分を有するものとされている。上記した縦管接続部１５は、縦管３を直接挿入して接着固定することが可能な受口部または差口部となっており、下部継手部材１６の下端部に一体に形成されている。なお、下部継手部材１６は、建物１の床スラブ１４（図１参照）に埋設され得るものとなっている。 The lower joint member 16 has cylindrical portions (receiving portions or opening portions) at upper and lower ends, and has a tapered portion that decreases in diameter downward between these cylindrical portions. It is supposed to be. The above-described vertical pipe connecting portion 15 is a receiving portion or a differential port portion into which the vertical tube 3 can be directly inserted and fixed, and is integrally formed at the lower end portion of the lower joint member 16. . The lower joint member 16 can be embedded in the floor slab 14 of the building 1 (see FIG. 1).
そして、床スラブ１４を防火区画壁として用いるために、下部継手部材１６は、耐火熱膨張性樹脂パイプなどの樹脂組成物を備えている。この耐火熱膨張性樹脂パイプは、例えば、ポリ塩化ビニル系樹脂などの樹脂基材に対して、熱膨張性黒鉛を含有させた耐火熱膨張性樹脂によって主に構成されている。そして、火災発生時にこの熱膨張性黒鉛が熱膨張することにより、排水管継手５や貫通穴２６などを閉塞して床スラブ１４に防火区画壁としての機能を保持させるようになっている。 And in order to use the floor slab 14 as a fireproof division wall, the lower joint member 16 is equipped with resin compositions, such as a fireproof thermal expansion resin pipe. This fire-resistant and heat-expandable resin pipe is mainly composed of, for example, a fire-resistant and heat-expandable resin containing heat-expandable graphite with respect to a resin base material such as a polyvinyl chloride resin. And when this fire expansible graphite expands thermally, the drain pipe joint 5, the through-hole 26, etc. are obstruct | occluded and the floor slab 14 is made to hold | maintain the function as a fire prevention division wall.
ここで、若干長くなるが、上記した耐火熱膨張性樹脂パイプの詳細について説明する。 Here, although it becomes a little long, the details of the above-mentioned fire-resistant and heat-expandable resin pipe will be described.
この実施例において、耐火熱膨張性樹脂パイプとしては、ポリ塩化ビニル系樹脂１００重量部に対して、熱膨張性黒鉛を１〜１０重量部の割合で含む耐火熱膨張性樹脂組成物からなる耐火膨張層の単層構造であるもの、あるいは、耐火熱膨張性樹脂パイプが、ポリ塩化ビニル系樹脂１００重量部に対して、熱膨張性黒鉛を１〜１５重量部の割合で含む耐火熱膨張性樹脂組成物からなる耐火膨張層と、この耐火膨張層の内外面を覆うように設けられる熱膨張性黒鉛非含有のポリ塩化ビニル系樹脂組成物からなる被覆層とからなる３層構造であるものが好ましい。 In this example, the fire-resistant and heat-expandable resin pipe is composed of a fire-resistant and thermally expandable resin composition containing 1 to 10 parts by weight of thermally expandable graphite with respect to 100 parts by weight of the polyvinyl chloride resin. The one having a single layer structure of the expanded layer or the fire-resistant and thermally expandable resin pipe containing 1 to 15 parts by weight of thermally expandable graphite with respect to 100 parts by weight of the polyvinyl chloride resin. It has a three-layer structure composed of a fire-resistant expansion layer made of a resin composition and a coating layer made of a polyvinyl chloride resin composition not containing thermally expandable graphite provided so as to cover the inner and outer surfaces of the fire-resistant expansion layer Is preferred.
上記ポリ塩化ビニル系樹脂としては、例えば、ポリ塩化ビニル単独重合体；ポリ塩化ビニル重合体に衝撃性改良樹脂を混合したもの；ポリ塩化ビニル重合体と衝撃性改良樹脂をグラフト共重合したもの；塩化ビニルモノマーと、この塩化ビニルモノマーと共重合可能な不飽和結合を有するモノマーとの共重合体；塩化ビニル以外の（共）重合体に塩化ビニルをグラフト共重合したグラフト共重合体等が挙げられ、これらは単独で使用されても良く、２種以上が併用されても良い。又、必要に応じて上記ポリ塩化ビニル系樹脂を塩素化しても良い。 Examples of the polyvinyl chloride resin include, for example, a polyvinyl chloride homopolymer; a mixture of a polyvinyl chloride polymer and an impact improving resin; a graft copolymer of a polyvinyl chloride polymer and an impact improving resin; A copolymer of a vinyl chloride monomer and a monomer having an unsaturated bond copolymerizable with this vinyl chloride monomer; a graft copolymer obtained by graft-copolymerizing vinyl chloride to a (co) polymer other than vinyl chloride, etc. These may be used alone or in combination of two or more. Further, the polyvinyl chloride resin may be chlorinated as necessary.
上記ポリ塩化ビニル重合体に混合する衝撃性改良樹脂としては、アクリロニトリル−ブタジエン−スチレン共重合体、メチルメタクリルレート−ブタジエン−スチレン共重合体、アクリルゴム、塩素化ポリエチレン、エチレン−酢酸ビニル共重合樹脂、アクリロニトリル−ブタジエン共重合体などのゴム特性を有する樹脂が挙げられ、これらは単独で使用されても良く、２種以上が併用されても良い。 Examples of the impact improving resin mixed with the polyvinyl chloride polymer include acrylonitrile-butadiene-styrene copolymer, methyl methacrylate-butadiene-styrene copolymer, acrylic rubber, chlorinated polyethylene, and ethylene-vinyl acetate copolymer resin. And resins having rubber properties such as acrylonitrile-butadiene copolymer, and these may be used alone or in combination of two or more.
上記ポリ塩化ビニル重合体とグラフト共重合する衝撃性改良樹脂としては、上記のゴム特性を有する樹脂が挙げられる。
上記のゴム特性を有する樹脂を混合又はグラフト共重合したポリ塩化ビニル系樹脂を用いることで、ポリ塩化ビニル系樹脂の耐衝撃性を向上させることができる。特に、縦管３の排水が当たる羽根部材１９や横管４の排水が当たる上部継手部材１３に対して、これらの樹脂を用いることが好ましい。
Examples of the impact improving resin that is graft-copolymerized with the polyvinyl chloride polymer include resins having the above rubber characteristics.
The impact resistance of the polyvinyl chloride resin can be improved by using a polyvinyl chloride resin obtained by mixing or graft copolymerizing a resin having the above rubber properties. In particular, it is preferable to use these resins for the blade member 19 that receives the drainage of the vertical pipe 3 and the upper joint member 13 that receives the drainage of the horizontal pipe 4.
上記塩化ビニルモノマーと共重合可能な不飽和結合を有するモノマーとしては、特に限定されず、例えば、エチレン、プロピレン、ブチレン等のα−オレフィン類；酢酸ビニル、プロピオン酸ビニル等のビニルエステル類；ブチルビニルエーテル、セチルビニルエーテル等のビニルエーテル類；メチル（メタ）アクリレート、エチル（メタ）アクリレート、ブチルアクリレート等の（メタ）アクリル酸エステル類；スチレン、α−メチルスチレン等の芳香族ビニル類；Ｎ−フェニルマレイミド、Ｎ−シクロヘキシルマレイミド等のＮ−置換マレイミド類などが挙げられ、これらは単独で使用されても良く、２種以上が併用されても良い。 The monomer having an unsaturated bond copolymerizable with the vinyl chloride monomer is not particularly limited, and examples thereof include α-olefins such as ethylene, propylene, and butylene; vinyl esters such as vinyl acetate and vinyl propionate; butyl Vinyl ethers such as vinyl ether and cetyl vinyl ether; (meth) acrylic acid esters such as methyl (meth) acrylate, ethyl (meth) acrylate and butyl acrylate; aromatic vinyls such as styrene and α-methylstyrene; N-phenylmaleimide N-substituted maleimides such as N-cyclohexylmaleimide and the like may be used, and these may be used alone or in combination of two or more.
上記塩化ビニルをグラフト共重合する重合体としては、塩化ビニルをグラフト共重合するものであれば、特に限定されず、例えば、エチレン−酢酸ビニル共重合体、エチレン−酢酸ビニル−一酸化炭素共重合体、エチレン−エチルアクリレート共重合体、エチレン−ブチルアクリレート−一酸化炭素共重合体、エチレン−メチルメタクリレート共重合体、エチレン−プロピレン共重合体、アクリロニトリル−ブタジエン共重合体、ポリウレタン、塩素化ポリエチレン、塩素化ポリプロピレンなどが挙げられ、これらは単独で使用されても良く、２種以上が併用されても良い。 The polymer for graft copolymerization with vinyl chloride is not particularly limited as long as it is for graft copolymerization with vinyl chloride. For example, ethylene-vinyl acetate copolymer, ethylene-vinyl acetate-carbon monoxide copolymer Polymer, ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate-carbon monoxide copolymer, ethylene-methyl methacrylate copolymer, ethylene-propylene copolymer, acrylonitrile-butadiene copolymer, polyurethane, chlorinated polyethylene, A chlorinated polypropylene etc. are mentioned, These may be used independently and 2 or more types may be used together.
上記ポリ塩化ビニル系樹脂はいずれも、樹脂組成物としての耐火性能を阻害しない範囲で、架橋、変性していても良い。この場合、予め架橋、変性した樹脂を用いても良く、添加剤等を配合する際に、同時に架橋、変性しても良いし、或いは、樹脂に上記成分を配合した後に架橋、変性しても良い。上記樹脂の架橋方法についても、特に限定はなく、ポリ塩化ビニル系樹脂の通常の架橋方法、例えば、各種架橋剤、過酸化物を使用する架橋、電子線照射による架橋、水架橋性材料を使用した方法等が挙げられる。 Any of the above polyvinyl chloride resins may be cross-linked or modified as long as the fire resistance of the resin composition is not impaired. In this case, a resin that has been cross-linked or modified in advance may be used. When an additive or the like is blended, it may be cross-linked or modified at the same time, or may be cross-linked or modified after the above components are blended in the resin. good. There is no particular limitation on the crosslinking method of the resin, and a conventional crosslinking method of polyvinyl chloride resin, for example, crosslinking using various crosslinking agents, peroxides, crosslinking by electron beam irradiation, water crosslinkable material is used. And the like.
なお、耐火熱膨張性樹脂パイプは、火炎等によって加熱されると耐火膨張層が膨張して、管内を閉塞あるいは閉塞に近い状態にすることができるものであれば、耐火膨張層のみの単層のものでも、耐火膨張層の内外面に耐火膨張層の耐火性能を阻害しない範囲で膨張黒鉛を含まない樹脂組成物からなる樹脂層を設けた複層構造とするようにしても構わない。 In addition, the fire-resistant and heat-expandable resin pipe is a single layer having only a fire-resistant expansion layer as long as the fire-resistant expansion layer expands when heated by a flame or the like and can close or close the inside of the pipe. Even if it is a thing, you may make it make it the multilayer structure which provided the resin layer which consists of a resin composition which does not contain an expanded graphite in the range which does not inhibit the fire resistance performance of a fireproof expansion layer on the inner and outer surfaces of a fireproof expansion layer.
上記単層構造品の場合、耐火膨張層を形成する耐火熱膨張性樹脂組成物としては、特に限定されないが、ポリ塩化ビニル系樹脂１００重量部に対して、熱膨張性黒鉛を１〜１０重量部の割合で含むものが好ましく、１〜８重量部の割合で含むものがより好ましく、２〜７重量部の割合で含むものが更に好ましい。これは、熱膨張性黒鉛が１重量部未満であると、燃焼時に、十分な熱膨張性が得られず、所望の耐火性が得られないおそれがあり、１０重量部を超えると、加熱により熱膨張し過ぎて、その形状を保持できずに残渣が脱落し、耐火性が低下してしまうおそれがあるからである。 In the case of the single-layer structure product, the fire-resistant and heat-expandable resin composition for forming the fire-resistant and expandable layer is not particularly limited, but 1 to 10 weights of thermally expandable graphite with respect to 100 parts by weight of the polyvinyl chloride resin. What is contained in the ratio of a part is preferable, What is contained in the ratio of 1-8 weight part is more preferable, What is contained in the ratio of 2-7 weight part is still more preferable. This is because if the thermal expansive graphite is less than 1 part by weight, sufficient thermal expansibility may not be obtained at the time of combustion, and desired fire resistance may not be obtained. This is because the thermal expansion is excessive, the shape cannot be maintained, and the residue falls off, which may reduce the fire resistance.
一方、複層構造品の場合、耐火膨張層を形成する耐火熱膨張性樹脂組成物としては、特に限定されないが、ポリ塩化ビニル系樹脂１００重量部に対して、熱膨張性黒鉛を１〜１５重量部の割合で含むものが好ましく、１〜１２重量部の割合で含むものがより好ましく、２〜１０重量部の割合で含むものが更に好ましい。これは、熱膨張性黒鉛を熱膨張性黒鉛が１重量部未満であると、燃焼時に、十分な熱膨張性が得られず、所望の耐火性が得られないし、１５重量部を超えると、加熱により熱膨張しすぎて、その形状を保持できずに残渣が脱落し、耐火性が低下してしまうおそれがあるからである。 On the other hand, in the case of a multilayer structure product, the fire-resistant and heat-expandable resin composition for forming the fire-resistant and expandable layer is not particularly limited, but the heat-expandable graphite is 1 to 15 per 100 parts by weight of the polyvinyl chloride resin. What is contained in the ratio of a weight part is preferable, What is contained in the ratio of 1-12 weight part is more preferable, What is contained in the ratio of 2-10 weight part is still more preferable. This is because if the thermal expansive graphite is less than 1 part by weight of the thermal expansive graphite, sufficient thermal expansibility cannot be obtained at the time of combustion, the desired fire resistance cannot be obtained, and if it exceeds 15 parts by weight, This is because the film expands too much due to heating, the shape cannot be maintained, and the residue falls off, which may reduce the fire resistance.
また、上記のように耐火膨張層がポリ塩化ビニル系樹脂１００重量部に対して、熱膨張性黒鉛を１〜１５重量部の割合で含む耐火熱膨張性樹脂組成物で形成された複層構造品の場合、耐火膨張層の内外面を熱膨張性耐火材料非含有のポリ塩化ビニル系樹脂組成物で被覆した３層構造とすることが好ましい。 Further, as described above, the fire-resistant expansion layer is formed of a fire-resistant and heat-expandable resin composition containing 1 to 15 parts by weight of thermally expandable graphite with respect to 100 parts by weight of the polyvinyl chloride resin. In the case of a product, it is preferable to have a three-layer structure in which the inner and outer surfaces of the fireproof expansion layer are coated with a polyvinyl chloride resin composition that does not contain a thermally expandable fireproof material.
上記のような３層構造の複層構造品の場合、耐火管状の内面および外面を被覆する被覆層の厚みが、それぞれ０．２〜２．０ｍｍであることが好ましい。これは、耐火膨張層の内面および外面を被覆する被覆層の厚みが０．２ｍｍ未満であると管としての機械的強度に劣るおそれがあり、２．０ｍｍを超えると耐火性が低下するおそれがあるからである。 In the case of a multilayer structure product having a three-layer structure as described above, the thickness of the coating layer covering the inner surface and the outer surface of the refractory tube is preferably 0.2 to 2.0 mm. This is because if the thickness of the coating layer covering the inner surface and outer surface of the fireproof expansion layer is less than 0.2 mm, the mechanical strength of the tube may be inferior, and if it exceeds 2.0 mm, the fire resistance may decrease. Because there is.
排水管継手５に用いられる熱膨張性黒鉛は、天然鱗状グラファイト、熱分解グラファイト、キッシュグラファイト等の粉末を濃硫酸、硝酸、セレン酸等の無機酸と濃硝酸、過塩素酸、過塩素酸塩、過マンガン酸塩、重クロム酸塩、過酸化水素等の強酸化剤とで、黒鉛の層間に無機酸を挿入する酸処理をした後、ｐＨ調整して得られる炭素の層状構造を維持したままの結晶化合物であって、ｐＨ１．５〜４．０に調整された熱膨張性黒鉛、および、１．３倍膨張温度が１８０℃〜２４０℃の熱膨張性黒鉛を用いることが好ましい。それは、熱膨張性黒鉛のｐＨが１．５未満であると、酸性が強過ぎて、成形装置の腐食などを引き起こし易く、ｐＨが４．０を超えると、ポリ塩化ビニル系樹脂の炭化促進効果が薄れ、十分な耐火性能が得られなくなるおそれがあるからである。 The heat-expandable graphite used for the drainage pipe joint 5 is composed of natural scale-like graphite, pyrolytic graphite, quiche graphite and other inorganic acids such as concentrated sulfuric acid, nitric acid, selenic acid and concentrated nitric acid, perchloric acid, perchlorate. In addition, with a strong oxidant such as permanganate, dichromate, hydrogen peroxide, etc., after the acid treatment to insert an inorganic acid between the graphite layers, the layer structure of carbon obtained by adjusting the pH was maintained. It is preferable to use a thermally expandable graphite having a pH adjusted to 1.5 to 4.0 and a thermally expandable graphite having a 1.3 times expansion temperature of 180 ° C. to 240 ° C. That is, if the pH of the thermally expandable graphite is less than 1.5, the acidity is too strong, and it easily causes corrosion of the molding apparatus. If the pH exceeds 4.0, the effect of promoting the carbonization of the polyvinyl chloride resin It is because there is a possibility that sufficient fire resistance performance may not be obtained.
また、耐火膨張層を形成する耐火熱膨張性樹脂組成物には、本発明の目的を阻害しない範囲で、必要に応じて安定剤、無機充填剤、難燃剤、滑剤、加工助剤、衝撃改質剤、耐熱向上剤、酸化防止剤、光安定剤、紫外線吸収剤、顔料、可塑剤、熱可塑性エラストマーなどの添加剤が添加されていても良い。 In addition, the fire-resistant and heat-expandable resin composition for forming the fire-resistant expansion layer has a stabilizer, an inorganic filler, a flame retardant, a lubricant, a processing aid, an impact modifier, and the like within a range not impairing the object of the present invention. Additives such as a quality agent, a heat resistance improver, an antioxidant, a light stabilizer, an ultraviolet absorber, a pigment, a plasticizer, and a thermoplastic elastomer may be added.
なお、排水管継手５のこれ以上の詳細については省略する。 Further details of the drainage pipe joint 5 will be omitted.
そして、図３に示すように、上記した羽根部材１９は、リング状をした部材１９ａの下部に旋回羽根１８を取付けたものとされる。この際、旋回羽根１８の縦管３から流下する排水が当たる上面１８ａ（旋回羽根上面）は平面とされており、この平面と下部継手部材１６の中心軸とが成す角度は１０°以上５０°以下であることが好ましく、更に、２０°以上４０°以下であることが好ましい。上記した角度が、５０°を超えると、流下する排水による衝撃によって羽根部材１９と旋回羽根１８との接続部分が破損するおそれがある。また、上記した角度が、１０°未満になると、流下する排水に十分な旋回流を与えることができず、配管構造６内の圧力変動を抑える排水流中の空気芯を発生させることが困難となって、配管構造６に接続された排水設備のトラップを破封するおそれがある。 As shown in FIG. 3, the blade member 19 described above has a swirl blade 18 attached to the lower portion of a ring-shaped member 19 a. At this time, the upper surface 18a (the upper surface of the swirl blade) on which the drainage flowing down from the vertical pipe 3 of the swirl vane 18 is a flat surface, and the angle formed by this plane and the central axis of the lower joint member 16 is 10 ° or more and 50 °. Or less, more preferably 20 ° or more and 40 ° or less. If the above-mentioned angle exceeds 50 °, the connection portion between the blade member 19 and the swirl blade 18 may be damaged due to the impact of the draining water flowing down. Moreover, when the above-mentioned angle is less than 10 °, it is difficult to generate a swirling flow sufficient for the draining water flowing down, and it is difficult to generate an air core in the draining flow that suppresses pressure fluctuation in the piping structure 6. Thus, there is a risk of breaking the trap of the drainage facility connected to the piping structure 6.
そして、以上のような基本的または全体的な構成に対し、この実施例は、以下のような構成を備えている。 In addition to the basic or overall configuration as described above, this embodiment has the following configuration.
（１）上記上部継手部材１３と、下部継手部材１６と、羽根部材１９とが、それぞれ樹脂製の射出成形品で構成されるようにする。
そして、図３（図４）に示すように、上記下部継手部材１６の、上端側外周面または下端側外周面の少なくとも一方に、樹脂の注入ゲート３１が設けられるようにする。
(1) The upper joint member 13, the lower joint member 16, and the blade member 19 are each constituted by a resin injection molded product.
As shown in FIG. 3 (FIG. 4), a resin injection gate 31 is provided on at least one of the upper end side outer peripheral surface and the lower end side outer peripheral surface of the lower joint member 16.
（２）また、図２に示すように、上記上部継手部材１３の下端部および上記羽根部材１９の上端部と、上記下部継手部材１６の上端部との間に、互いに嵌合可能な嵌合部４１が設けられるようにする。
そして、図５に示すように、この嵌合部４１に、周方向の位置決めが可能な位置決め部４２が設けられるようにする。
この位置決め部４２が、位置決めリブ４３と、この位置決めリブ４３を収容保持する位置決め用凹溝部４４とを備えたものとされる。
そして、位置決めリブ４３、および、位置決め用凹溝部４４のコーナー部分４５に、アール形状部４６が設けられるようにする。
(2) Moreover, as shown in FIG. 2, the fitting which can mutually be fitted between the lower end part of the said upper joint member 13, the upper end part of the said blade member 19, and the upper end part of the said lower joint member 16 The part 41 is provided.
Then, as shown in FIG. 5, the fitting portion 41 is provided with a positioning portion 42 that can be positioned in the circumferential direction.
The positioning portion 42 includes a positioning rib 43 and a positioning groove 44 that accommodates and holds the positioning rib 43.
Then, the rounded portion 46 is provided at the corner portion 45 of the positioning rib 43 and the positioning groove 44.
ここで、上記上部継手部材１３の下端部と上記羽根部材１９の上端部との間は、互いに当接可能な当接部４７（図２参照）とされる。そして、この当接部４７が当接された状態の、上記上部継手部材１３の下端部および上記羽根部材１９の上端部と、上記下部継手部材１６の上端部との間が、互いに嵌合可能な嵌合部４１とされる。 Here, the lower end portion of the upper joint member 13 and the upper end portion of the blade member 19 serve as contact portions 47 (see FIG. 2) that can contact each other. Then, the lower end portion of the upper joint member 13 and the upper end portion of the blade member 19 and the upper end portion of the lower joint member 16 in a state in which the contact portion 47 is in contact can be fitted to each other. The fitting part 41 is used.
なお、羽根部材１９の上端部は、上記したリング状の部材１９ａ（の上縁部）のことである。そして、上部継手部材１３の下端部と上記羽根部材１９上端部は、同一の内外径を有するものとされる。また、上部継手部材１３の下端部と上記羽根部材１９上端部の内径または外径は、下部継手部材１６の上端部の外径または内径と同一とされる。この場合には、後述するように、上部継手部材１３の下端部および上記羽根部材１９の上端部が、上記下部継手部材１６の上端部に挿入（内嵌）されるようになっている。よって、上部継手部材１３の下端部と上記羽根部材１９上端部の外径が、下部継手部材１６の上端部の内径と同一とされている。 The upper end portion of the blade member 19 is the ring-shaped member 19a (upper edge portion) described above. The lower end portion of the upper joint member 13 and the upper end portion of the blade member 19 have the same inner and outer diameters. In addition, the inner diameter or outer diameter of the lower end portion of the upper joint member 13 and the upper end portion of the blade member 19 is the same as the outer diameter or inner diameter of the upper end portion of the lower joint member 16. In this case, as will be described later, the lower end of the upper joint member 13 and the upper end of the blade member 19 are inserted (internally fitted) into the upper end of the lower joint member 16. Therefore, the outer diameters of the lower end portion of the upper joint member 13 and the upper end portion of the blade member 19 are the same as the inner diameter of the upper end portion of the lower joint member 16.
そして、射出成形品とされた上部継手部材１３と、下部継手部材１６と、羽根部材１９とにおける、樹脂の注入ゲート３１は、少なくとも、互いが接触する面、即ち、上記当接部４７および嵌合部４１を避けた位置に設けられるようにする。
より具体的には、上部継手部材１３および羽根部材１９のうち、下部継手部材１６に内嵌されて下部継手部材１６と接触する上部継手部材１３の下端部から横管接続部１２の下端までの外面と、羽根部材１９のリング状の部材１９ａの外面と、上記当接部４７となる位置と、羽根部材１９の旋回羽根上面となる位置については、射出成形時の樹脂の注入ゲート３１を金型に設けないようにして、注入ゲート３１の跡であるゲート痕が生じないようにする。
また、上部継手部材１３の下端部から横管接続部１２までの外面および羽根部材１９のリング状の部材１９ａの外面は下部継手部材１６に内嵌されて接続されるため、平滑でないゲート痕によって隙間が生じ、水漏れの原因となるおそれがある。また、上部継手部材１３の下端部と上記羽根部材１９の上端部との間の当接部４７となる位置にゲート痕があると、上部継手部材１３の下端部と上記羽根部材１９の上端部との間に隙間が生じて、水漏れの原因となるおそれがある。更に、羽根部材１９の旋回羽根１８の上面１８ａは排水流が流れるため、ゲート痕があると排水中の髪の毛等のごみが引っかかり、徐々に排水性能が低下するおそれがある。
よって、好ましい注入ゲート３１の位置としては、上部継手部材１３では、下部継手部材１６に内嵌されることのない上部継手部材１３の上端から横管接続部１２の下端までの外面、または、上部継手部材１３の上端面などが挙げられ、羽根部材１９では、旋回羽根１８の排水が接触しない下面１８ｂの位置が挙げられるが、これに限るものではない。
なお、上部継手部材１３の下端と羽根部材１９のリング状の部材１９ａの上端のうち、いずれか一方に注入ゲート３１を設けてゲート痕を設けた場合には、他方にこのゲート痕を避けるための切欠きを設けるようにすることで、当接部４７であっても注入ゲート３１を設けることが可能となる。
また、上部継手部材１３と羽根部材１９とを射出成形により一体に成型しても良いが、この場合であっても、注入ゲート３１の位置は下部継手部材１６と接触する箇所（横管接続部１２の下端以下の外面）については、設けないようにすることが好ましい。
The resin injection gate 31 in the upper joint member 13, the lower joint member 16, and the blade member 19, which is an injection-molded product, is at least a surface in contact with each other, that is, the contact portion 47 and the fitting. It should be provided at a position avoiding the joint portion 41.
More specifically, of the upper joint member 13 and the blade member 19, from the lower end portion of the upper joint member 13 that is fitted in the lower joint member 16 and contacts the lower joint member 16 to the lower end of the horizontal pipe connecting portion 12. As for the outer surface, the outer surface of the ring-shaped member 19a of the blade member 19, the position to be the contact portion 47, and the position to be the upper surface of the swirling blade of the blade member 19, the resin injection gate 31 at the time of injection molding is made of gold. It is not provided in the mold so that the gate trace which is the trace of the injection gate 31 does not occur.
Moreover, since the outer surface from the lower end part of the upper joint member 13 to the horizontal pipe connecting part 12 and the outer surface of the ring-shaped member 19a of the blade member 19 are fitted and connected to the lower joint member 16, the gate marks are not smooth. There is a possibility that a gap is formed, causing water leakage. Further, when there is a gate mark at a position that becomes the contact portion 47 between the lower end portion of the upper joint member 13 and the upper end portion of the blade member 19, the lower end portion of the upper joint member 13 and the upper end portion of the blade member 19 are provided. There is a possibility that a gap may be formed between the two and cause water leakage. Furthermore, since the drainage flow flows on the upper surface 18a of the swirl vane 18 of the blade member 19, dust such as hair in the drainage may be caught if there is a gate trace, and the drainage performance may gradually deteriorate.
Therefore, as a preferable position of the injection gate 31, in the upper joint member 13, the outer surface from the upper end of the upper joint member 13 that is not fitted into the lower joint member 16 to the lower end of the horizontal pipe connecting portion 12, or the upper part The upper end surface of the joint member 13 etc. are mentioned, In the blade member 19, the position of the lower surface 18b where the drainage of the swirl blade 18 does not contact is mentioned, but it is not limited to this.
In addition, in order to avoid this gate trace on the other side when the injection gate 31 is provided on either one of the lower end of the upper joint member 13 and the upper end of the ring-shaped member 19a of the blade member 19, the gate trace is provided. By providing this notch, the injection gate 31 can be provided even in the contact portion 47.
In addition, the upper joint member 13 and the blade member 19 may be integrally formed by injection molding. However, even in this case, the position of the injection gate 31 is a place where the lower joint member 16 is in contact (the horizontal pipe connecting portion). The outer surface below the lower end of 12 is preferably not provided.
同様に、下部継手部材１６においても、上部継手部材１３および羽根部材１９と接触する位置、即ち、下部継手部材１６の上部内面については、注入ゲート３１を設けないようにすることが好ましい。また、下部継手部材１６の下端の縦管接続部１５が差口部である場合には、下部継手部材１６の下端近傍の外面には注入ゲート３１を設けないようにするのが好ましい。更に、下部継手部材１６は床スラブ１４を貫通するように上下に長く延びる形状をしており、下部継手部材１６の上端面または下端面のいずれかに注入ゲート３１を設けると樹脂が他方の端部まで行き渡らなくなるおそれがあるため、下部継手部材１６の上端面または下端面には注入ゲート３１を設けないようにすることが好ましい。
好ましい注入ゲート３１の位置としては、下部継手部材１６のテーパ形状になった外面、または、下部継手部材１６の上下２つの円筒状の部分の外面であって、テーパ形状の部分の近傍などが挙げられるが、これに限るものではない。
Similarly, also in the lower joint member 16, it is preferable not to provide the injection gate 31 on the position where the upper joint member 13 and the blade member 19 are in contact, that is, on the upper inner surface of the lower joint member 16. Further, when the vertical pipe connecting portion 15 at the lower end of the lower joint member 16 is a differential port portion, it is preferable not to provide the injection gate 31 on the outer surface near the lower end of the lower joint member 16. Further, the lower joint member 16 has a shape that extends vertically so as to penetrate the floor slab 14, and if the injection gate 31 is provided on either the upper end surface or the lower end surface of the lower joint member 16, the resin is at the other end. Therefore, it is preferable not to provide the injection gate 31 on the upper end surface or the lower end surface of the lower joint member 16.
The position of the injection gate 31 is preferably the outer surface of the lower joint member 16 that is tapered, or the outer surface of the upper and lower cylindrical portions of the lower joint member 16 that is in the vicinity of the tapered portion. However, it is not limited to this.
特に、図４に示すように、下部継手部材１６に（位置決め部４２の）位置決め用凹溝部４４のような薄肉部が存在している場合には、樹脂の注入ゲート３１は、下部継手部材１６の周方向に対して、薄肉部を避けた位置で、且つ、薄肉部にウェルドライン４９（図４参照）ができない位置に、１箇所または複数箇所設けるようにする。 In particular, as shown in FIG. 4, when the lower joint member 16 has a thin portion such as the positioning groove 44 (of the positioning portion 42), the resin injection gate 31 is connected to the lower joint member 16. With respect to the circumferential direction, one or a plurality of positions are provided at a position avoiding the thin portion and at a position where the weld line 49 (see FIG. 4) cannot be formed in the thin portion.
ウェルドライン４９は、樹脂の注入ゲート３１から離れた位置にできる樹脂の合流痕のことである。ウェルドライン４９ができない位置は、図４（ａ）（ｂ）に示すように、注入ゲート３１から薄肉部までの周方向の距離が等しくならない位置とすることができる。これに対し、ウェルドライン４９ができる位置は、図４（ｃ）（ｄ）に示すように、注入ゲート３１から薄肉部までの周方向の距離が等しくなる位置である。 The weld line 49 is a resin merge mark formed at a position away from the resin injection gate 31. As shown in FIGS. 4A and 4B, the position where the weld line 49 cannot be made can be a position where the circumferential distance from the injection gate 31 to the thin portion is not equal. On the other hand, the position where the weld line 49 is formed is a position where the circumferential distance from the injection gate 31 to the thin portion becomes equal, as shown in FIGS.
なお、図５に示す位置決め部４２の位置決めリブ４３と位置決め用凹溝部４４とは、嵌合部４１を構成する上部継手部材１３および羽根部材１９と、下部継手部材１６とのどちらに設けても良い。この場合には、位置決めリブ４３は上部継手部材１３および羽根部材１９に設けられ、位置決め用凹溝部４４は、下部継手部材１６に設けられている。 Note that the positioning rib 43 and the positioning groove 44 of the positioning portion 42 shown in FIG. 5 may be provided on any of the upper joint member 13 and the blade member 19 constituting the fitting portion 41 and the lower joint member 16. good. In this case, the positioning rib 43 is provided in the upper joint member 13 and the blade member 19, and the positioning groove 44 is provided in the lower joint member 16.
そして、位置決め部４２が設けられる嵌合部４１は、接着剤によって接着固定される。接着剤の種類は、特に限定されないが、嵌合部４１を構成する各部には、射出成形の際に付けられる型抜き勾配などによって僅かな隙間部が形成されるので、溶剤系の接着剤を用いるよりは、充填系接着剤を用いる方が、隙間部を埋めて確実に水漏れを防止する上では好ましい。充填系接着剤としては、例えば、エポキシ系の二液混合型の反応性接着剤などを用いるのが好ましい。なお、他の接着部分についても、上記した充填系接着剤を用いるのが水漏れを防止する上では好ましい。 And the fitting part 41 in which the positioning part 42 is provided is adhesive-fixed with an adhesive agent. The type of the adhesive is not particularly limited, but a slight gap is formed in each part constituting the fitting part 41 by a die-cutting gradient attached at the time of injection molding. Rather than using a filling adhesive, it is preferable to fill the gap and reliably prevent water leakage. As the filling adhesive, it is preferable to use, for example, an epoxy two-component mixed reactive adhesive. In addition, it is preferable to use the above-described filling adhesive for other adhesive portions in order to prevent water leakage.
位置決めリブ４３、および、位置決め用凹溝部４４のアール形状部４６にすべきコーナー部分４５は、少なくとも、位置決めリブ４３の先端部分、および、位置決め用凹溝部４４の内奥部のことである。なお、位置決めリブ４３の基部、および、位置決め用凹溝部４４の入口部のコーナー部分４５についてもアール形状部４６にしても良い。 The corner portion 45 to be the rounded portion 46 of the positioning rib 43 and the positioning groove 44 is at least the tip portion of the positioning rib 43 and the inner back portion of the positioning groove 44. The base portion of the positioning rib 43 and the corner portion 45 of the inlet portion of the positioning groove 44 may also be the rounded portion 46.
アール形状部４６は、少なくとも、角形状がなくなるような丸みを有するものとされる。アール形状部４６は、使用する接着剤に応じた、接着剤が入り込み易い径にして、隙間ができなくなるようにする。なお、アール形状部４６の代わりに、位置決めリブ４３の断面形状が多角形となるようなテーパ形状としても良いし、または、位置決めリブ４３の断面形状が先端に向かって幅が縮小する台形状としても良い。 The rounded portion 46 has at least a roundness that eliminates the square shape. The R-shaped portion 46 has a diameter that allows the adhesive to easily enter in accordance with the adhesive to be used so that no gap is formed. Instead of the round shape portion 46, the positioning rib 43 may have a tapered shape with a polygonal cross section, or the positioning rib 43 may have a trapezoidal shape whose width decreases toward the tip. Also good.
（３）更に、図６に示すように、少なくとも、上記下部継手部材１６の外側面に、軸線方向５１（図３参照）へ延びる制振リブ５２が設けられるようにする。 (3) Further, as shown in FIG. 6, at least the damping rib 52 extending in the axial direction 51 (see FIG. 3) is provided on the outer surface of the lower joint member 16.
ここで、軸線方向５１は、排水管継手５を設置した状態で、上下方向となる方向のことである。制振リブ５２は、下部継手部材１６の軸線方向５１のほぼ全域に亘るように、１本または数本設けるようにする。制振リブ５２は、周方向のどの位置に設けても良い。例えば、図６（ａ）に示すように、制振リブ５２は、位置決め部４２（位置決めリブ４３または位置決め用凹溝部４４）とは異なる位置に設けても良い。また、図６（ｂ）に示すように、制振リブ５２は、位置決め部４２（位置決めリブ４３または位置決め用凹溝部４４）と同じ位置に設けても良い。制振リブ５２は、その幅を、位置決め部４２の位置決め用凹溝部４４の幅よりも大きくするのが好ましい。このようにすると、下部継手部材１６の薄肉化を防止することができるので、強度的に好ましいものとなる。制振リブ５２は、先端側が上底となり、基部側が下底となる断面台形状のものとするのが、型抜上は、好ましい。 Here, the axial direction 51 is a direction that becomes the vertical direction in a state in which the drain pipe joint 5 is installed. One or several damping ribs 52 are provided so as to cover substantially the entire region of the lower joint member 16 in the axial direction 51. The damping rib 52 may be provided at any position in the circumferential direction. For example, as shown in FIG. 6A, the damping rib 52 may be provided at a position different from the positioning portion 42 (the positioning rib 43 or the positioning concave groove portion 44). As shown in FIG. 6B, the damping rib 52 may be provided at the same position as the positioning portion 42 (the positioning rib 43 or the positioning groove portion 44). The damping rib 52 preferably has a width larger than the width of the positioning groove 44 of the positioning portion 42. If it does in this way, since thickness reduction of the lower joint member 16 can be prevented, it becomes a preferable thing in intensity | strength. It is preferable for the damping ribs 52 to have a trapezoidal cross section with the tip side being the upper base and the base side being the lower base.
（４）図２に示すように、上記下部継手部材１６の上端部に、上記上部継手部材１３の下端部および上記羽根部材１９の上端部を挿入状態で嵌合可能な外嵌部６１が設けられるようにする。
そして、図７に示すように、上記下部継手部材１６の外嵌部６１の上縁部は、上記床スラブ１４の上面よりも上方に突設した状態で埋設されるようにする（突出部６２）。
(4) As shown in FIG. 2, an outer fitting portion 61 is provided at the upper end portion of the lower joint member 16 so that the lower end portion of the upper joint member 13 and the upper end portion of the blade member 19 can be fitted in an inserted state. To be able to.
And as shown in FIG. 7, the upper edge part of the external fitting part 61 of the said lower joint member 16 is embed | buried in the state protruded upwards rather than the upper surface of the said floor slab 14 (projection part 62). ).
ここで、上記した嵌合部４１は、図６に示すように、上側に位置する上部継手部材１３および羽根部材１９が内嵌部６３となり、下側に位置する下部継手部材１６が外嵌部６１となるようにしている。これにより、水漏れを起こし難い構造とすることができる。下部継手部材１６の外嵌部６１の上縁部（突出部６２）と、上部継手部材１３の下端部との間、および、下部継手部材１６の外嵌部６１の上縁部（突出部６２）と、床スラブ１４（モルタル２７）の上面との間は、コーキング材６５などによって止水する。 Here, as shown in FIG. 6, the above-described fitting portion 41 includes the upper joint member 13 and the blade member 19 located on the upper side as the inner fitting portion 63, and the lower joint member 16 located on the lower side as the outer fitting portion. 61. Thereby, it can be set as the structure which hardly raise | generates a water leak. Between the upper edge part (projection part 62) of the outer fitting part 61 of the lower joint member 16 and the lower end part of the upper joint member 13, and the upper edge part (projection part 62) of the outer fitting part 61 of the lower joint member 16 ) And the upper surface of the floor slab 14 (mortar 27) is stopped by a caulking material 65 or the like.
（５）図１に示すように、縦管３と横管４とを、図７に示すような、上下端部に縦管接続部１１，１５を有し、側面に横管接続部１２を有し、内部に旋回羽根１８を有する排水管継手５を用いて接続して配管構造６を構成する。
そして、上記横管４が、上記排水管継手５の横管接続部１２に直接接着固定されるようにする。
更に、上記横管４に、横管４の熱伸縮（の影響）を吸収可能な伸縮吸収部７１（図８参照）が設けられるようにする。
(5) As shown in FIG. 1, the vertical pipe 3 and the horizontal pipe 4 have vertical pipe connecting portions 11 and 15 at the upper and lower ends as shown in FIG. 7, and the horizontal pipe connecting portion 12 is provided on the side surface. The piping structure 6 is configured by connecting with the drainage pipe joint 5 having the swirl vanes 18 inside.
Then, the horizontal pipe 4 is directly bonded and fixed to the horizontal pipe connecting portion 12 of the drainage pipe joint 5.
Further, the horizontal tube 4 is provided with an expansion / contraction absorbing portion 71 (see FIG. 8) capable of absorbing the thermal expansion / contraction (influence) of the horizontal tube 4.
ここで、伸縮吸収部７１には、上記した伸縮継手２１とほぼ同じものを用いることができる。具体的には、この伸縮吸収部７１は、短い筒状の継手本体７２の内部に、横管４の熱伸縮による変位を許容可能なシール部材７３を取付けたものとされる。このシール部材７３は、少なくとも、リング状のシール本体７３ａと、このシール本体７３ａの内周部分から内方へ向けて傾斜するように一体に突設されたリップ部７３ｂとを有するものとされる。継手本体７２の上端部には、シール部材７３を脱落できないように保持するためのリング状のキャップ部７４が取付けられる。 Here, the expansion / contraction absorption part 71 can be substantially the same as the expansion joint 21 described above. Specifically, the expansion / contraction absorbing portion 71 is configured such that a seal member 73 capable of allowing displacement due to thermal expansion / contraction of the horizontal tube 4 is attached to the inside of a short tubular joint body 72. The seal member 73 includes at least a ring-shaped seal main body 73a and a lip portion 73b that protrudes integrally from the inner peripheral portion of the seal main body 73a so as to be inclined inward. . A ring-shaped cap portion 74 for holding the seal member 73 so as not to drop off is attached to the upper end portion of the joint main body 72.
なお、伸縮吸収部７１は、横管４が２ｍ以下であれば、用いても良いことは勿論であるが、特に用いる必要はない。横管４が２ｍ以上となった場合に、１個または複数個用いるようにする。 In addition, as long as the horizontal tube 4 is 2 m or less, the expansion-contraction absorption part 71 may be used, but it is not necessary to use it in particular. When the horizontal tube 4 becomes 2 m or more, one or more are used.
＜作用＞以下、この実施例の作用について簡単に説明する。 <Operation> The operation of this embodiment will be briefly described below.
集合住宅やオフィスビルの排水設備では、各階層２で生じた排水は、横管４および排水管継手５を介して縦管３へ集められ、縦管３を流下して下水管へ排出される。この際、排水管継手５の内部に旋回羽根１８を設けることで、縦管３を流下する排水に旋回流を与えることができる。よって、縦管３の内部に、内周面に沿った排水の流れと、中心部に沿った空気の流れ（空気芯）とができるので、１本の縦管３の内部で、排水と空気とを分離して流すことが可能となる。 In the drainage facilities of apartment buildings and office buildings, the wastewater generated at each level 2 is collected in the vertical pipe 3 via the horizontal pipe 4 and the drain pipe joint 5, and flows down the vertical pipe 3 and is discharged to the sewer pipe. . At this time, by providing the swirl vanes 18 inside the drain pipe joint 5, a swirl flow can be given to the drainage flowing down the vertical pipe 3. Therefore, since the flow of drainage along the inner peripheral surface and the flow of air (air core) along the central portion can be made inside the vertical tube 3, the drainage and air inside the single vertical tube 3. Can be separated and flowed.
＜効果＞そして、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.
（効果１）射出成形品を成形するための樹脂の注入ゲート３１の位置には、微小な凹凸状の痕跡（ゲート痕）が残るので、機能的に重要となる位置に注入ゲート３１を設定するのは好ましくない。そこで、下部継手部材１６の場合には、上端側外周面または下端側外周面の少なくとも一方に、樹脂の注入ゲート３１を設けるようにした。これにより、排水管継手５としての機能に最も影響の少ない位置に注入ゲート３１を設けることができる。 (Effect 1) Since a minute uneven trace (gate trace) remains at the position of the resin injection gate 31 for molding an injection molded product, the injection gate 31 is set at a position that is functionally important. Is not preferred. Therefore, in the case of the lower joint member 16, a resin injection gate 31 is provided on at least one of the upper end side outer peripheral surface and the lower end side outer peripheral surface. Thereby, the injection gate 31 can be provided at a position having the least influence on the function as the drainage pipe joint 5.
例えば、上部継手部材１３の下端部および羽根部材１９の上端部と、下部継手部材１６の上端部との嵌合部４１に注入ゲート３１を設定した場合、嵌合部４１内に注入ゲート３１のゲート痕（凹凸部）が存在することとなり、このゲート痕の凹凸部が嵌合部４１内に隙間を作って水路（みずみち）ができるため、この水路を通って水漏れが発生するおそれがある。 For example, when the injection gate 31 is set in the fitting portion 41 between the lower end portion of the upper joint member 13 and the upper end portion of the blade member 19 and the upper end portion of the lower joint member 16, There is a gate mark (uneven portion), and the uneven portion of this gate mark creates a gap in the fitting portion 41 to form a water channel (Mizumichi). is there.
しかし、上記した嵌合部４１を避けた位置に注入ゲート３１を設けることで、嵌合部４１に無用な凹凸形状をなくすことができ、水路（みずみち）の発生をなくして水漏れを防止することができる。 However, by providing the injection gate 31 at a position that avoids the fitting portion 41 described above, an unnecessary uneven shape can be eliminated from the fitting portion 41, and water leakage is prevented by eliminating the occurrence of a water channel. can do.
また、下部継手部材１６の内部に注入ゲート３１を設定した場合には、ゲート痕（の凹凸部）にゴミなどが引っ掛かる可能性が生じる。しかし、下部継手部材１６の内部を避けた位置に注入ゲート３１を設けることで、ゴミなどの引っ掛かりを防止することができる。 Further, when the injection gate 31 is set inside the lower joint member 16, there is a possibility that dust or the like may be caught on the gate mark (uneven portion thereof). However, by providing the injection gate 31 at a position avoiding the inside of the lower joint member 16, it is possible to prevent the dust from being caught.
また、下部継手部材１６に位置決め部４２（の位置決め用凹溝部４４）などの薄肉部が存在している場合には、樹脂の注入ゲート３１を、下部継手部材１６の周方向に対して、薄肉部を避けた位置で、且つ、薄肉部にウェルドライン４９ができない位置に、１箇所または複数箇所設けるようにするのが好ましい。これにより、薄肉部に注入ゲート３１やウェルドライン４９ができなくなるので、下部継手部材１６の強度を高めて、薄肉部の割れを防止することが可能となる。 Further, when the lower joint member 16 has a thin portion such as the positioning portion 42 (the positioning groove portion 44), the resin injection gate 31 is made thin with respect to the circumferential direction of the lower joint member 16. It is preferable to provide one or a plurality of positions at a position where the weld line 49 is not formed in the thin portion at a position avoiding the portion. Thereby, since the injection gate 31 and the weld line 49 cannot be formed in the thin portion, the strength of the lower joint member 16 can be increased and the thin portion can be prevented from cracking.
（効果２）上部継手部材１３の下端部および羽根部材１９の上端部と、下部継手部材１６の上端部との間の嵌合部４１は、接着によって固定するようにしているが、嵌合部４１に位置決めリブ４３や位置決め用凹溝部４４などのような凹凸形状が存在すると、凹凸部分によって接着剤の周方向への回り込みが妨げられ易くなる。しかも、位置決めリブ４３や位置決め用凹溝部４４に角形状をしたコーナー部分４５が存在すると、角形状のコーナー部分４５は、接着剤が最も入り込み難い形状であるため、接着剤を塗布または注入した時に、接着剤の注入不良や、注入不良による空気溜まりなどができ易い。このような注入不良や空気溜まりの生じた部分があると、その部分が水路（みずみち）となって水漏れを発生するおそれがある。 (Effect 2) The fitting portion 41 between the lower end portion of the upper joint member 13 and the upper end portion of the blade member 19 and the upper end portion of the lower joint member 16 is fixed by adhesion. When the concave / convex shape such as the positioning rib 43 and the positioning concave groove 44 exists in 41, the concave / convex portion easily prevents the adhesive from wrapping in the circumferential direction. In addition, when the corner portion 45 having a square shape is present in the positioning rib 43 and the positioning groove portion 44, the corner portion 45 having a square shape is the shape in which the adhesive is most difficult to enter. Therefore, when the adhesive is applied or injected. Inadequate injection of the adhesive and air accumulation due to poor injection are likely to occur. If there is a portion where such injection failure or air accumulation has occurred, the portion may become a water channel and water leakage may occur.
そこで、位置決めリブ４３、および、位置決め用凹溝部４４のコーナー部分４５に、アール形状部４６を設けた。これにより、コーナー部分４５の角形状がなくなるので、コーナー部分４５へ接着剤が入り込み易くなり、接着剤の注入不良や、注入不良による空気溜まりなどができ難くなるため、水路（みずみち）の発生を防止して水漏れを防止することができる。 Therefore, rounded portions 46 are provided at the positioning ribs 43 and the corner portions 45 of the positioning grooves 44. As a result, since the corner portion 45 has no square shape, it becomes easier for the adhesive to enter the corner portion 45, and it becomes difficult to cause poor injection of the adhesive or air accumulation due to poor injection. It is possible to prevent water leakage.
この際、下部継手部材１６や、上部継手部材１３や、羽根部材１９が樹脂成形品であると、射出成形の際に付けられる型抜き勾配などによって、嵌合部４１に僅かな隙間部が生じることになるが、このような隙間部が水路（みずみち）となって水漏れを発生するおそれがある。そこで、このような隙間部に対して、充填系接着剤を充填するようにして、嵌合部４１を充填系接着剤で接着することにより、隙間部が充填系接着剤によって確実に埋められるので、水路（みずみち）をなくして水漏れの発生経路をなくすことができる。 At this time, if the lower joint member 16, the upper joint member 13, or the blade member 19 is a resin molded product, a slight gap portion is generated in the fitting portion 41 due to a die-cutting gradient applied at the time of injection molding. However, there is a possibility that such a gap portion becomes a water channel and a water leak occurs. Therefore, by filling the gap portion with a filling adhesive and bonding the fitting portion 41 with the filling adhesive, the gap portion is reliably filled with the filling adhesive. It is possible to eliminate the water leakage path by eliminating the water channel.
（効果３）排水管継手５は、内部を流れる流体によって振動が発生し、この振動は排水管継手５に直接接している床スラブ１４を介して建物１に伝わって騒音と成り易い。 (Effect 3) The drainage pipe joint 5 is vibrated by the fluid flowing inside, and this vibration is easily transmitted to the building 1 via the floor slab 14 in direct contact with the drainage pipe joint 5 and becomes noise.
そこで、少なくとも、下部継手部材１６の外側面に、軸線方向５１へ延びる制振リブ５２を設けた。下部継手部材１６は、排水管継手５にとって大きな割合を占める部品となっているので、下部継手部材１６に制振リブ５２を設けることによって、排水管継手５全体の剛性を上げることができる。そして、下部継手部材１６が制振リブ５２で補強されて振動を起こし難くなるので、床スラブ１４に直接埋設される下部継手部材１６から建物１に振動が伝わって騒音と成るのを効果的に抑制することができる（防振性・遮音性の向上）。 Therefore, at least the damping rib 52 extending in the axial direction 51 is provided on the outer surface of the lower joint member 16. Since the lower joint member 16 is a component that occupies a large proportion of the drain pipe joint 5, the rigidity of the drain pipe joint 5 as a whole can be increased by providing the lower joint member 16 with the damping rib 52. And since the lower joint member 16 is reinforced by the damping ribs 52 and it is difficult for vibration to occur, it is effective that the vibration is transmitted from the lower joint member 16 directly embedded in the floor slab 14 to the building 1 and becomes noise. Can be suppressed (improves vibration and sound insulation).
（効果４）下部継手部材１６の外嵌部６１の上縁部が、床スラブ１４の上面と同じかそれよりも低い位置にあると、下部継手部材１６と床スラブ１４との間の隙間などを塞ぐための施工がやり難くなるため、下部継手部材１６と床スラブ１４との隙間を確実に塞いで、水路（みずみち）ができないように施工するのが難しくなる。 (Effect 4) When the upper edge portion of the outer fitting portion 61 of the lower joint member 16 is at the same position as or lower than the upper surface of the floor slab 14, a gap between the lower joint member 16 and the floor slab 14 or the like Therefore, it is difficult to perform the construction so that the gap between the lower joint member 16 and the floor slab 14 is reliably closed so that there is no water channel.
そこで、下部継手部材１６の外嵌部６１の上縁部を、床スラブ１４の上面よりも上方に突設させるようにした（突出部６２を設けて埋設するようにした）。これにより、下部継手部材１６と床スラブ１４との隙間を確実に塞ぐようにする施工がやり易くなるので、水路（みずみち）の発生をなくして水漏れを防止することができる。 Therefore, the upper edge portion of the outer fitting portion 61 of the lower joint member 16 is projected above the upper surface of the floor slab 14 (the projecting portion 62 is provided and embedded). Thereby, since it becomes easy to perform the construction for reliably closing the gap between the lower joint member 16 and the floor slab 14, it is possible to prevent the occurrence of water channels and prevent water leakage.
（効果５）この配管構造６では、縦管３は、排水管継手５の上下端部の縦管接続部１１に接続される。また、横管４は、排水管継手５の側面の横管接続部１２に接着固定されている。そして、縦管３を流れる排水は、排水管継手５の内部に設けられた旋回羽根１８によって旋回流を与えられる。これにより、縦管３の中心部に空気芯（空気の通り道）を形成することができる。 (Effect 5) In this piping structure 6, the vertical pipe 3 is connected to the vertical pipe connecting portions 11 at the upper and lower ends of the drainage pipe joint 5. Further, the horizontal pipe 4 is bonded and fixed to the horizontal pipe connecting portion 12 on the side surface of the drainage pipe joint 5. Then, the waste water flowing through the vertical pipe 3 is given a swirl flow by swirl vanes 18 provided inside the drain pipe joint 5. Thereby, an air core (air passage) can be formed at the center of the vertical tube 3.
そして、横管４を排水管継手５の横管接続部１２に直接接着固定することによって、横管４と横管接続部１２との間の隙間を確実に塞いで、水漏れを防止することができる。 Then, by directly bonding and fixing the horizontal pipe 4 to the horizontal pipe connecting portion 12 of the drainage pipe joint 5, the gap between the horizontal pipe 4 and the horizontal pipe connecting portion 12 can be reliably closed to prevent water leakage. Can do.
この際、横管４に伸縮吸収部７１を設けたことにより、横管４の熱伸縮の影響を、横管４の途中や端部に設けられた伸縮吸収部７１で吸収することができる。 At this time, by providing the expansion / contraction absorption part 71 in the horizontal tube 4, the influence of thermal expansion / contraction of the horizontal tube 4 can be absorbed by the expansion / contraction absorption part 71 provided in the middle or the end of the horizontal tube 4.
そして、上記したように、各部の細かい隙間を可能な限りなくすようにすることにより、水路（みずみち）となる隙間をなくして、水漏れが発生し難い排水管継手５や配管構造６を得ることができる。 And as above-mentioned, by eliminating as little gap as possible in each part, the gap which becomes a water channel (mizumichi) is eliminated, and the drainage pipe joint 5 and the piping structure 6 in which water leakage hardly occurs are obtained. be able to.
以上、この発明の実施の形態を図面により詳述してきたが、実施の形態はこの発明の例示にしか過ぎないものである。よって、この発明は実施の形態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、各実施の形態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、実施の形態に複数の実施例や変形例がこの発明のものとして開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。 As mentioned above, although embodiment of this invention has been explained in full detail with drawing, embodiment is only an illustration of this invention. Therefore, the present invention is not limited only to the configuration of the embodiment, and it goes without saying that design changes and the like within a scope not departing from the gist of the present 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. In addition, in the case where a plurality of examples and modifications are disclosed in the embodiment as those of the present invention, possible combinations of combinations extending over these are included even if not specifically described. Of course. 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 建物
３ 縦管
４ 横管
５ 排水管継手
１１ 縦管接続部
１２ 横管接続部
１３ 上部継手部材
１４ 床スラブ
１６ 下部継手部材
１８ 旋回羽根
１９ 羽根部材
３１ 注入ゲート
４１ 嵌合部
４２ 位置決め部
４３ 位置決めリブ
４４ 位置決め用凹溝部
４５ コーナー部分
４６ アール形状部
５１ 軸線方向
５２ 制振リブ
６１ 外嵌部
７１ 伸縮吸収部
DESCRIPTION OF SYMBOLS 1 Building 3 Vertical pipe 4 Horizontal pipe 5 Drain pipe joint 11 Vertical pipe connection part 12 Horizontal pipe connection part 13 Upper joint member 14 Floor slab 16 Lower joint member 18 Swirling blade 19 Blade member 31 Injection gate 41 Fitting part 42 Positioning part 43 Positioning rib 44 Positioning groove part 45 Corner part 46 Round shape part 51 Axial direction 52 Damping rib 61 Outer fitting part 71 Stretching and absorbing part
Claims (5)
少なくとも、その上端部に縦管接続部を有すると共に、側面に横管接続部を有する上部継手部材と、
下端部に縦管接続部を有する下部継手部材と、
該下部継手部材の内側に設置されて、内部を流れる流体に旋回流を与える旋回羽根を有する羽根部材と、を備えた排水管継手において、
前記上部継手部材と、下部継手部材と、羽根部材とが、それぞれ樹脂製の射出成形品で構成され、
前記下部継手部材の、上端側外周面または下端側外周面の少なくとも一方に、樹脂の注入ゲートが設けられていることを特徴とする排水管継手。 Provided at the connecting part of the vertical and horizontal pipes,
At least an upper joint member having a vertical pipe connection portion at its upper end and a horizontal pipe connection portion on its side surface;
A lower joint member having a vertical pipe connecting portion at the lower end,
A drainage pipe joint provided with a swirl member installed inside the lower joint member and having a swirl vane that imparts a swirl flow to the fluid flowing inside,
The upper joint member, the lower joint member, and the blade member are each composed of a resin injection molded product,
A drainage pipe joint, wherein a resin injection gate is provided on at least one of an upper end side outer peripheral surface or a lower end side outer peripheral surface of the lower joint member.
少なくとも、その上端部に縦管接続部を有すると共に、側面に横管接続部を有する上部継手部材と、
下端部に縦管接続部を有する下部継手部材と、
該下部継手部材の内側に設置されて、内部を流れる流体に旋回流を与える旋回羽根を有する羽根部材と、を備えた排水管継手において、
前記上部継手部材の下端部および前記羽根部材の上端部と、前記下部継手部材の上端部との間に、互いに嵌合可能な嵌合部が設けられ、
該嵌合部に、周方向の位置決めが可能な位置決め部が設けられると共に、
該位置決め部が、位置決めリブと、該位置決めリブを収容保持する位置決め用凹溝部とを備え、
位置決めリブ、および、位置決め用凹溝部のコーナー部分に、アール形状部が設けられていることを特徴とする排水管継手。 Provided at the connecting part of the vertical and horizontal pipes,
At least an upper joint member having a vertical pipe connection portion at its upper end and a horizontal pipe connection portion on its side surface;
A lower joint member having a vertical pipe connecting portion at the lower end,
A drainage pipe joint provided with a swirl member installed inside the lower joint member and having a swirl vane that imparts a swirl flow to the fluid flowing inside,
Between the lower end portion of the upper joint member and the upper end portion of the blade member, and an upper end portion of the lower joint member, a fitting portion that can be fitted to each other is provided,
The fitting portion is provided with a positioning portion capable of circumferential positioning,
The positioning portion includes a positioning rib and a positioning groove that accommodates and holds the positioning rib.
A drainage pipe joint, wherein a rounded portion is provided at a corner portion of the positioning rib and the positioning groove.
少なくとも、前記下部継手部材の外側面に、軸線方向へ延びる制振リブが設けられていることを特徴とする排水管継手。 In the drainage pipe joint according to claim 1 or 2,
A drainage pipe joint, wherein at least an outer surface of the lower joint member is provided with a damping rib extending in the axial direction.
前記下部継手部材の上端部に、前記上部継手部材の下端部および前記羽根部材の上端部を挿入状態で嵌合可能な外嵌部が設けられ、
前記下部継手部材の外嵌部の上縁部は、前記床スラブの上面よりも上方に突設した状態で埋設されていることを特徴とする排水管継手。 In the drainage pipe joint according to any one of claims 1 to 3,
On the upper end portion of the lower joint member, an outer fitting portion capable of fitting the lower end portion of the upper joint member and the upper end portion of the blade member in an inserted state is provided,
The drain pipe joint according to claim 1, wherein the upper edge portion of the outer fitting portion of the lower joint member is buried in a state of projecting upward from the upper surface of the floor slab.
前記横管が、前記排水管継手の横管接続部に接着固定されると共に、
前記横管に、横管の熱伸縮を吸収可能な伸縮吸収部が設けられたことを特徴とする配管構造。 In a pipe structure in which a vertical pipe and a horizontal pipe are connected to each other using a drain pipe joint having a vertical pipe connection portion on the upper and lower ends, a horizontal pipe connection portion on a side surface, and a swirl vane inside.
The horizontal pipe is adhesively fixed to the horizontal pipe connecting portion of the drainage pipe joint,
A piping structure characterized in that an expansion / contraction absorbing portion capable of absorbing thermal expansion / contraction of the horizontal tube is provided in the horizontal tube.
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