JP2022050961A - Sound-insulating cover and piping structure, method for constructing sound-insulating cover - Google Patents

Sound-insulating cover and piping structure, method for constructing sound-insulating cover Download PDF

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JP2022050961A
JP2022050961A JP2020157171A JP2020157171A JP2022050961A JP 2022050961 A JP2022050961 A JP 2022050961A JP 2020157171 A JP2020157171 A JP 2020157171A JP 2020157171 A JP2020157171 A JP 2020157171A JP 2022050961 A JP2022050961 A JP 2022050961A
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sound
absorbing material
sound insulation
insulation cover
cover
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雅未 志摩
Masami Shima
英治 木村
Eiji Kimura
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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Abstract

To provide a sound-insulating cover that can soundproof an end face of a joint with improved workability.SOLUTION: A first sound-insulating cover 60 and a second sound-insulating cover 70 include belt-like sound-insulating materials 61 and 71, and sound-absorbing materials 62 and 72 that are placed on the sound-insulating materials 61 and 71 and provided along the sound-insulating materials 61 and 71 in the longitudinal direction. Each of the sound-absorbing materials 62 and 72 is provided on the corresponding sound-insulating material at intervals in the transverse direction or provided on the center of it.SELECTED DRAWING: Figure 1

Description

本発明は、遮音カバー及び配管構造、遮音カバーの施工方法に関する。 The present invention relates to a sound insulation cover, a piping structure, and a method of constructing the sound insulation cover.

建物の排水用として用いられる単管式排水システムにおいて、集合継手や脚部継手が各社から発売されている。これらの施工にあたり、遮音性が求められる現場では、継手及び継手に接続される管の外装に遮音カバーが巻かれている。
例えば、樹脂製の集合継手における熱膨張性の耐火材の外周部を遮音防振シートで覆うとともに、遮音防振シートの上端部がスラブ貫通孔部の上端部よりも上側に突出されるようにする構造が知られている（特許文献１）。
また、狭い空間でも簡単に既設配管のエルボに取り付けられる遮音カバーとして、発泡樹脂シートの吸音材を主体として、エルボに巻き付ける帯状部及び周囲を固定する粘着テープを有したものが知られている（特許文献２）。 In the single pipe drainage system used for drainage of buildings, collective joints and leg joints are sold by various companies. At sites where sound insulation is required for these constructions, a sound insulation cover is wrapped around the joint and the exterior of the pipe connected to the joint.
For example, the outer peripheral portion of the heat-expandable refractory material in the resin collective joint is covered with a sound-insulating vibration-proof sheet, and the upper end portion of the sound-insulating vibration-proof sheet is projected above the upper end portion of the slab through hole portion. The structure is known (Patent Document 1).
Further, as a sound insulating cover that can be easily attached to the elbow of an existing pipe even in a narrow space, a sound insulating cover mainly composed of a sound absorbing material of a foamed resin sheet and having a band-shaped portion to be wrapped around the elbow and an adhesive tape for fixing the surroundings are known. Patent Document 2).

特開２０１６－１４２００３号公報Japanese Unexamined Patent Publication No. 2016-142003 特開２０１１－０３３０５５号公報Japanese Unexamined Patent Publication No. 2011-033055

上述の特許文献は、継手端面、すなわち、継手の接続部について考慮されていない。接続部とは、特に、脚部継手の受け口部や、集合継手の枝管接続部のフランジ形状をいう。
遮音性確保の観点から、継手端面が露出している場合は、遮音カバーやテープを巻くことで露出部をなくす必要がある。 The above-mentioned patent documents do not consider the end face of the joint, that is, the connection portion of the joint. The connection portion particularly refers to the flange shape of the receiving portion of the leg joint and the branch pipe connection portion of the collective joint.
From the viewpoint of ensuring sound insulation, if the end face of the joint is exposed, it is necessary to wrap a sound insulation cover or tape to eliminate the exposed portion.

近年、鋳鉄製継手に対して、立て管や横枝管として塩ビ（塩化ビニル）製の配管が接続されることが多くなっている。塩ビ製の配管は、鋳鉄製継手及び従来の耐火二層管に比べて肉厚が薄い。そのため、鋳鉄製継手と塩ビ製配管の接続部には段差が発生する。
また、比較的肉厚の薄いプラスチック製の継手を用いても、継手の有する受口部がアダプター口径可変形式の場合は、段差が発生することがある。 In recent years, pipes made of vinyl chloride (vinyl chloride) are often connected to cast iron joints as vertical pipes and horizontal branch pipes. PVC pipes are thinner than cast iron joints and conventional fireproof double-layer pipes. Therefore, a step is generated at the connection portion between the cast iron joint and the PVC pipe.
Further, even if a relatively thin plastic joint is used, a step may occur if the receiving portion of the joint has an adapter diameter variable type.

上述の段差に対して通常の遮音カバー（吸音材＋遮音シートから成る積層体）を巻き付けると、遮音カバーは段差部における径の大きい側に接するが、径の小さい側に沿って変形することはない。すなわち、通常の遮音カバーは段差への追従性が悪い。
また、段差が大きいと、遮音カバーに代わってテープを巻き付けた場合であってもテープにシワが発生して巻きにくい。これらのことから、施工性に加え見栄えも悪くなる。 When a normal sound insulation cover (a laminated body consisting of a sound absorbing material and a sound insulating sheet) is wrapped around the above-mentioned step, the sound insulation cover comes into contact with the large diameter side of the step portion, but may be deformed along the small diameter side. do not have. That is, the normal sound insulation cover has poor followability to the step.
Further, if the step is large, wrinkles are generated on the tape even when the tape is wound instead of the sound insulation cover, and it is difficult to wind the tape. For these reasons, not only the workability but also the appearance is deteriorated.

更に、上述の各継手は主に建物の床下や天井付近、あるいは地下等に施工される。例えば、集合継手の横枝部は勾配の関係上、床面に限りなく近く設置することが望ましい。そのため、継手端面に遮音処理を行う際の作業スペースが狭く、作業性が悪くなる。
そのため、遮音カバーの取り付けには施工性が求められる。 Further, each of the above-mentioned joints is mainly installed under the floor or near the ceiling of a building, or underground. For example, it is desirable to install the lateral branch of the collective joint as close as possible to the floor surface due to the slope. Therefore, the work space for performing the sound insulation treatment on the end face of the joint is narrow, and the workability is deteriorated.
Therefore, workability is required for attaching the sound insulation cover.

本発明は、前述した事情に鑑みてなされたものであって、継手端面に遮音処理を行う際、施工性が良好になる遮音カバーを提供することを目的とする。 The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a sound insulation cover that improves workability when the joint end face is subjected to sound insulation treatment.

前記課題を解決するために、本発明は以下の手段を提案している。
本発明に係る遮音カバーは、帯状の遮音材と、前記遮音材に積層され、前記遮音材の長手方向に沿って設けられる吸音材と、を備え、前記吸音材は、前記遮音材の短手方向に間隔をあけて設けられている。 In order to solve the above problems, the present invention proposes the following means.
The sound-insulating cover according to the present invention includes a band-shaped sound-insulating material and a sound-absorbing material laminated on the sound-insulating material and provided along the longitudinal direction of the sound-insulating material. It is provided at intervals in the direction.

この発明によれば、吸音材が帯状の遮音材の短手方向の両端部に間隔をあけて設けられている。すなわち、遮音カバーの短手方向において、中央部が凹となる段差を有している。
この遮音カバーを、例えば、集合継手と横管との接続部に生じるフランジ部（凸型の段差）に巻き付けたとき、遮音カバーの短手方向の両端部に設けられた吸音材が、横管の軸方向においてフランジ部の両側を挟むように接する。それに加えて、横管の径方向においてフランジ部と遮音カバーが接する部位には吸音材が設けられておらず、遮音材が直接フランジ部に接する。 According to the present invention, the sound absorbing material is provided at both ends of the band-shaped sound insulating material in the lateral direction at intervals. That is, there is a step in which the central portion is concave in the lateral direction of the sound insulation cover.
When this sound insulation cover is wound around, for example, a flange portion (convex step) generated at the connection portion between the collective joint and the horizontal pipe, the sound absorbing material provided at both ends of the sound insulation cover in the lateral direction is formed on the horizontal pipe. Contact so as to sandwich both sides of the flange portion in the axial direction of. In addition, no sound absorbing material is provided at the portion where the flange portion and the sound insulating cover are in contact with each other in the radial direction of the horizontal pipe, and the sound insulating material is in direct contact with the flange portion.

ここで、フランジ部と接する部位に吸音材が設けられていると、遮音カバーをフランジ部に巻き付けたとき、吸音材がフランジ部に沿って変形する。すなわち、遮音カバー全体がフランジ部付近で径方向に膨らんだ形状になる。つまり、凸型の段差部に対する追従性が悪くなる。
そのため、遮音カバーにおけるフランジ部に接する部位（遮音カバーの短手方向の中央部）が凹の形状になっていることで、フランジ部付近で遮音カバーが膨らんだ形状になることを防ぐことができる。すなわち、フランジ部に対する形状の追従性を確保することができる。
これにより、例えば、フランジ部の縁と施工場所の壁との距離が狭く、空間が十分に確保できない場合であっても、遮音カバーを設けることができる。つまり、施工性を良好にすることができる。 Here, if the sound absorbing material is provided at the portion in contact with the flange portion, the sound absorbing material is deformed along the flange portion when the sound insulating cover is wound around the flange portion. That is, the entire sound insulation cover has a shape that bulges in the radial direction near the flange portion. That is, the followability to the convex step portion is deteriorated.
Therefore, since the portion of the sound insulation cover in contact with the flange portion (the central portion in the lateral direction of the sound insulation cover) has a concave shape, it is possible to prevent the sound insulation cover from bulging in the vicinity of the flange portion. .. That is, it is possible to secure the followability of the shape to the flange portion.
Thereby, for example, even when the distance between the edge of the flange portion and the wall of the construction site is narrow and sufficient space cannot be secured, the sound insulation cover can be provided. That is, the workability can be improved.

また、帯状の遮音材と、前記遮音材に積層され、前記遮音材の長手方向に沿って設けられる吸音材と、を備え、前記吸音材は、前記遮音材の短手方向の中央部に設けられていてもよい。 Further, a band-shaped sound insulating material and a sound absorbing material laminated on the sound insulating material and provided along the longitudinal direction of the sound insulating material are provided, and the sound absorbing material is provided in the central portion of the sound insulating material in the lateral direction. It may have been.

この発明によれば、吸音材が帯状の遮音材の短手方向の中央部のみに取り付けられる。すなわち、遮音カバーの短手方向において、中央部が凸となる段差を有している。
この遮音カバーを、例えば、脚部継手と、脚部継手より小径な縦管との接続部に生じる凹型の段差部に巻き付けたとき、遮音カバーの短手方向の中央部に設けられた吸音材が、前述の凹型の段差部に入り込むように接する。それに加えて、遮音カバーと脚部継手の端部及び縦管の端部とが接する部位には吸音材が設けられておらず、遮音材が直接脚部継手の端部及び縦管の端部に接する。 According to the present invention, the sound absorbing material is attached only to the central portion of the band-shaped sound insulating material in the lateral direction. That is, it has a step in which the central portion is convex in the lateral direction of the sound insulation cover.
When this sound insulation cover is wound around, for example, a concave step portion generated at a connection portion between a leg joint and a vertical pipe having a diameter smaller than that of the leg joint, a sound absorbing material provided in the center portion of the sound insulation cover in the lateral direction. However, they come into contact with each other so as to enter the concave step portion described above. In addition, no sound absorbing material is provided at the part where the sound insulation cover and the end of the leg joint and the end of the vertical pipe are in contact with each other, and the sound insulating material is directly applied to the end of the leg joint and the end of the vertical pipe. In contact with.

ここで、脚部継手の端部及び縦管の端部に接する部位に吸音材が設けられていると、遮音カバーを凹型の段差部に巻き付けたとき、吸音材が脚部継手の端部のみに接し、縦管に沿って吸音材が変形することはない。つまり、脚部継手の径に吸音材の厚さが加わり、遮音カバーが凹部を覆い隠したような形状になる。すなわち、凹型の段差部に対する追従性が悪くなる。
そのため、凹型の段差部に接する部位（遮音カバーの短手方向の中央部）が凸の形状になっていることで、脚部継手の端部に吸音材の厚さが加わった状態になることを防ぐことができる。さらに、効率的に凹部に吸音材を密着させることができる。つまり、凹型の段差部に対する形状の追従性を確保することができる。
これにより、例えば、脚部継手と施工場所の壁との距離が狭く、空間が十分に確保できない場合であっても、遮音カバーを設けることができる。つまり、施工性を良好にすることができる。 Here, if a sound absorbing material is provided at the end of the leg joint and the portion in contact with the end of the vertical pipe, when the sound insulating cover is wound around the concave stepped portion, the sound absorbing material is only at the end of the leg joint. The sound absorbing material does not deform along the vertical pipe. That is, the thickness of the sound absorbing material is added to the diameter of the leg joint, and the sound insulating cover has a shape that covers the concave portion. That is, the followability to the concave step portion is deteriorated.
Therefore, the part in contact with the concave step portion (the central portion in the lateral direction of the sound insulation cover) has a convex shape, so that the thickness of the sound absorbing material is added to the end portion of the leg joint. Can be prevented. Further, the sound absorbing material can be efficiently brought into close contact with the recess. That is, it is possible to secure the followability of the shape to the concave step portion.
Thereby, for example, even when the distance between the leg joint and the wall of the construction site is narrow and sufficient space cannot be secured, the sound insulation cover can be provided. That is, the workability can be improved.

また、本発明に係る配管構造は、外面に段差部が形成された配管構成部材と、前記遮音カバーと、を備え、前記遮音カバーは、前記段差部の形状に合わせて固定されている。 Further, the piping structure according to the present invention includes a piping component having a stepped portion formed on an outer surface and the sound insulating cover, and the sound insulating cover is fixed according to the shape of the stepped portion.

この発明によれば、遮音カバーは段差部の形状に合わせて固定されている。このことによって、吸音材によって遮音カバーの追従性が悪くなることを防ぐことができる。すなわち、空間が狭い施工場所であっても遮音カバーの施工性を良好にしつつ、遮音性を確保することができる。 According to the present invention, the sound insulation cover is fixed according to the shape of the step portion. This makes it possible to prevent the sound absorbing material from deteriorating the followability of the sound insulating cover. That is, it is possible to secure the sound insulation while improving the workability of the sound insulation cover even in a construction place where the space is narrow.

また、遮音カバーは、配管構成部材の段差部周辺のみを覆うことを目的としている。ここで、段差部を含む配管構成部材全体を一つの遮音カバーで覆うとした場合、遮音カバーが大きくなり、更に形状が複雑になることが考えられる。
すなわち、段差部周辺のみを覆うことを目的とした遮音カバーを有することで、小面積化及び形状の簡素化が可能になる。そのため、遮音カバーにかかる費用を削減することができる。 Further, the sound insulation cover is intended to cover only the periphery of the stepped portion of the piping constituent member. Here, if the entire piping component including the step portion is covered with one sound insulation cover, it is conceivable that the sound insulation cover becomes large and the shape becomes more complicated.
That is, by having a sound insulation cover for the purpose of covering only the periphery of the step portion, it is possible to reduce the area and simplify the shape. Therefore, the cost of the sound insulation cover can be reduced.

また、本発明に係る遮音カバーの施工方法は、前記遮音カバーを、前記吸音材が、前記配管構成部材の前記段差部を避けて接するように固定する。 Further, in the method of constructing the sound insulation cover according to the present invention, the sound insulation cover is fixed so that the sound absorbing material is in contact with the pipe component member while avoiding the step portion.

この発明によれば、遮音カバーを、吸音材が、配管構成部材の段差部を避けて接するように固定する。
このことによって、吸音材が段差部を避けて配管構成部材に密着する。これにより、管内を排水が流れたことによって生じる音を吸収することができる。また、吸音材の外側に遮音材が設けられていることで、前述の音が外部に漏れることを抑えることができる。ここで、吸音材が接しない段差部（例えば、フランジ部又は脚部継手端部）は、吸音材が接する部位に対して比較的肉厚になる。そのため、吸音材が接する部位と比べて音が外に伝わりにくい。よって、遮音材によって覆うのみで、遮音性を確保することができる。
すなわち、空間が狭い施工場所であっても遮音カバーの施工性を良好にしつつ、遮音性を確保することができる。 According to the present invention, the sound insulating cover is fixed so that the sound absorbing material comes into contact with the pipe constituent member so as to avoid the stepped portion.
As a result, the sound absorbing material avoids the stepped portion and comes into close contact with the piping component. This makes it possible to absorb the sound generated by the drainage flowing through the pipe. Further, by providing the sound insulating material on the outside of the sound absorbing material, it is possible to suppress the above-mentioned sound from leaking to the outside. Here, the stepped portion (for example, the flange portion or the end of the leg joint) that the sound absorbing material does not contact is relatively thick with respect to the portion that the sound absorbing material contacts. Therefore, it is difficult for the sound to be transmitted to the outside as compared with the part where the sound absorbing material comes into contact. Therefore, sound insulation can be ensured only by covering with a sound insulation material.
That is, it is possible to secure the sound insulation while improving the workability of the sound insulation cover even in a construction place where the space is narrow.

本発明によれば、継手端面に遮音処理を行う際、施工性が良好になる遮音カバーを提供することができる。 According to the present invention, it is possible to provide a sound insulation cover that improves workability when the joint end surface is subjected to sound insulation treatment.

本発明の一実施形態に係る遮音カバーが施工される配管構造の側面図である。It is a side view of the piping structure in which the sound insulation cover which concerns on one Embodiment of this invention is constructed. 本発明の一実施形態に係る遮音カバーについて、吸音材が遮音材の短手方向に間隔をあけて設けられている場合の斜視図である。It is a perspective view of the sound insulation cover which concerns on one Embodiment of this invention, when the sound absorption material is provided at intervals in the lateral direction of the sound insulation material. 図２に示す遮音カバーの長手方向端部において、遮音材が短手方向の全体に露出している変形例である。This is a modified example in which the sound insulating material is exposed on the entire side in the lateral direction at the end portion of the sound insulating cover shown in FIG. 2 in the longitudinal direction. 本発明の一実施形態に係る遮音カバーについて、吸音材が遮音材の短手方向の中央部に設けられている場合の斜視図である。It is a perspective view of the sound insulation cover which concerns on one Embodiment of this invention, when the sound absorption material is provided in the central part in the lateral direction of the sound insulation material. 図４に示す遮音カバーの長手方向端部において、遮音材が短手方向の全体に露出している変形例である。This is a modified example in which the sound insulating material is exposed on the entire side in the lateral direction at the longitudinal end of the sound insulating cover shown in FIG. 図２又は図３に示す遮音カバーを、配管構造のフランジ部（凸部）に取り付けた状態を示す例である。This is an example showing a state in which the sound insulation cover shown in FIG. 2 or 3 is attached to the flange portion (convex portion) of the piping structure. 図６に示す配管構造のフランジ部（凸部）に、短手方向の全体に吸音材を有する遮音カバーを取り付けた状態を示す図である。FIG. 6 is a diagram showing a state in which a sound insulating cover having a sound absorbing material is attached to the flange portion (convex portion) of the piping structure shown in FIG. 6 in the lateral direction. 図４又は図５に示す遮音カバーを、配管構造の段差部（凹部）に取り付けた状態を示す例である。This is an example showing a state in which the sound insulation cover shown in FIG. 4 or FIG. 5 is attached to a stepped portion (recessed portion) of the piping structure. 図８に示す配管構造の段差部（凹部）に、短手方向の全体に吸音材を有する遮音カバーを取り付けた状態を示す図である。FIG. 8 is a diagram showing a state in which a sound insulating cover having a sound absorbing material is attached to the entire stepped portion (recessed portion) of the piping structure shown in FIG. 8 in the lateral direction.

以下、図面を参照し、本発明の一実施形態に係る遮音カバー及び配管構造を説明する。
図１に示すように、配管構造１００は、縦管１０と、横管２０と、連結管３０と、集合継手４０と、脚部継手５０と、第１遮音カバー６０と、第２遮音カバー７０と、を備えている。配管構造１００は、主に建物の排水管として用いられる。例えば、複数階を有する建物の場合、集合継手４０が各階ごとに設けられている。 Hereinafter, the sound insulation cover and the piping structure according to the embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the piping structure 100 includes a vertical pipe 10, a horizontal pipe 20, a connecting pipe 30, a collective joint 40, a leg joint 50, a first sound insulation cover 60, and a second sound insulation cover 70. And have. The piping structure 100 is mainly used as a drainage pipe of a building. For example, in the case of a building having a plurality of floors, a collective joint 40 is provided for each floor.

配管構造１００による排水の流れは下記の通りである。まず、ある階で生じた排水が、横管２０によって集合継手４０に集約される。また、上層階で発生し、同様に集約された排水が、縦管１０を通して前述の集合継手４０に集約される。上層階から下層階へ向かうごとにこれを繰り返す。集約された排水は、最終的に最下階の床下に設けられた脚部継手５０へ流下する。脚部継手５０に流下した排水は、不図示の排水施設に排水される。 The flow of drainage by the piping structure 100 is as follows. First, the drainage generated on a certain floor is collected in the collective joint 40 by the horizontal pipe 20. Further, the wastewater generated in the upper floor and similarly collected is collected in the above-mentioned collective joint 40 through the vertical pipe 10. This is repeated every time from the upper floor to the lower floor. The collected drainage finally flows down to the leg joint 50 provided under the floor on the lowest floor. The drainage flowing down to the leg joint 50 is drained to a drainage facility (not shown).

縦管１０は、建物の各階ごとに設けられた複数の集合継手４０同士の間を接続する。縦管１０は、上層階の集合継手４０から流下した排水を、下層階の集合継手４０に運搬する。すなわち、縦管１０の上流側の端部は、集合継手４０の上縦管接続部４１に接続される。また、縦管１０の下流側の端部は、集合継手４０の下縦管接続部４３に接続される。
横管２０は、建物の各階に設けられた給湯室、風呂、厨房等をはじめとする水道設備の排水部に接続されている。横管２０は、各設備から発生した排水を集約し、集合継手４０に運搬する。横管２０は、集合継手４０の横管接続部４２に接続される。 The vertical pipe 10 connects between a plurality of collective joints 40 provided on each floor of the building. The vertical pipe 10 transports the drainage flowing down from the collective joint 40 on the upper floor to the collective joint 40 on the lower floor. That is, the upstream end of the vertical pipe 10 is connected to the upper vertical pipe connecting portion 41 of the collective joint 40. Further, the downstream end of the vertical pipe 10 is connected to the lower vertical pipe connecting portion 43 of the collective joint 40.
The horizontal pipe 20 is connected to a drainage section of a water supply facility such as a hot water supply room, a bath, a kitchen, etc. provided on each floor of the building. The horizontal pipe 20 collects the wastewater generated from each facility and transports it to the collective joint 40. The horizontal pipe 20 is connected to the horizontal pipe connecting portion 42 of the collective joint 40.

集合継手４０は、各階で生じた排水を集約し、下層階側に接続された縦管１０へ流下させる。集合継手４０は、上縦管接続部４１と、横管接続部４２と、下縦管接続部４３と、集水室４４と、本管部４５と、を備える。横管接続部４２には、フランジ部Ｆが設けられている。ここで、横管接続部４２は、受け口である。横管接続部４２には、横管２０が配置される。横管接続部４２内には、ゴム輪Ｒが配置されている。ゴム輪Ｒは、横管接続部４２から外れないよう、カバーＣによって覆われている。横管接続部４２のうち、ゴム輪Ｒが配置されている部分が径方向の外側に張り出している。この部分が、フランジ部Ｆとなっている。
集合継手４０は、複数階を有する建物において階ごとに設けられ、各階で生じた排水と、上層階から流下した排水を集約し、下層階側に設けられた縦管１０へ流下させる。また、最下階に設けられた集合継手４０の下縦管接続部４３には、連結管３０が接続され、脚部継手５０へ排水を流下させる。
集合継手４０の材料は、鋳鉄あるいは硬質塩化ビニルが好適に用いられる。なお、本実施形態において、集合継手４０は、「耐火プラＡＤ継手ＨＧ（積水化学工業株式会社製）」の管径１００Ａを用いるものとする。すなわち、集合継手４０の下縦管接続部４３の外径（特に連結管３０と接続するもの）は、１４９ｍｍであるとする。 The collective joint 40 collects the wastewater generated on each floor and causes it to flow down to the vertical pipe 10 connected to the lower floor side. The collective joint 40 includes an upper vertical pipe connecting portion 41, a horizontal pipe connecting portion 42, a lower vertical pipe connecting portion 43, a water collecting chamber 44, and a main pipe portion 45. The cross pipe connecting portion 42 is provided with a flange portion F. Here, the horizontal pipe connecting portion 42 is a receiving port. A horizontal pipe 20 is arranged at the horizontal pipe connecting portion 42. A rubber ring R is arranged in the horizontal pipe connecting portion 42. The rubber ring R is covered with a cover C so as not to come off from the horizontal pipe connecting portion 42. Of the horizontal pipe connecting portion 42, the portion where the rubber ring R is arranged projects outward in the radial direction. This portion is the flange portion F.
The collective joint 40 is provided for each floor in a building having a plurality of floors, collects the drainage generated on each floor and the drainage flowing down from the upper floors, and causes the drainage to flow down to the vertical pipe 10 provided on the lower floor side. Further, a connecting pipe 30 is connected to the lower vertical pipe connecting portion 43 of the collective joint 40 provided on the lowest floor, and drainage is allowed to flow down to the leg joint 50.
Cast iron or rigid vinyl chloride is preferably used as the material of the collective joint 40. In the present embodiment, the collective joint 40 uses a pipe diameter 100A of "fireproof plastic AD joint HG (manufactured by Sekisui Chemical Co., Ltd.)". That is, it is assumed that the outer diameter of the lower vertical pipe connecting portion 43 of the collective joint 40 (particularly the one connected to the connecting pipe 30) is 149 mm.

脚部継手５０は、建物で発生した排水を、建物外の排水施設へ運搬する。脚部継手５０は、上流側接続口５１と、曲管部５２と、下流側接続口５３と、を備える。上述の通り、上流側接続口５１は、連結管３０に接続される。また、下流側接続口５３は、不図示の排水施設に接続されている。
脚部継手５０の材料は、鋳鉄あるいは硬質塩化ビニルが好適に用いられる。なお、本実施形態において、脚部継手５０は、「最下階合流システム専用掃除口付ＡＤ脚部継手スリム直結ショートタイプ（積水化学工業株式会社製）」の管径１００Ａ×１２５Ａを用いるものとする。すなわち、集合継手４０の下縦管接続部４３の外径（特に連結管３０と接続するもの）は、１４９ｍｍであるとする。 The leg joint 50 transports the drainage generated in the building to the drainage facility outside the building. The leg joint 50 includes an upstream side connection port 51, a curved pipe portion 52, and a downstream side connection port 53. As described above, the upstream connection port 51 is connected to the connecting pipe 30. Further, the downstream connection port 53 is connected to a drainage facility (not shown).
Cast iron or rigid vinyl chloride is preferably used as the material of the leg joint 50. In the present embodiment, the leg joint 50 uses a pipe diameter of 100 A x 125 A of "AD leg joint slim direct connection short type (manufactured by Sekisui Chemical Co., Ltd.) with a cleaning port dedicated to the bottom floor merging system". .. That is, it is assumed that the outer diameter of the lower vertical pipe connecting portion 43 of the collective joint 40 (particularly the one connected to the connecting pipe 30) is 149 mm.

連結管３０は、配管構造１００において、最下階に設けられた集合継手４０と、最下階の床下に設けられた脚部継手５０との間を接続する。すなわち、連結管３０の上流側の端部は集合継手４０の下縦管接続部４３に、下流側の端部は脚部継手５０の上流側接続口５１に接続される。集合継手４０の下縦管接続部４３と脚部継手５０の上流側接続口５１との間には隙間が設けられていて、その隙間から連結管３０が外部に露出している。
また、連結管３０は、塩化ビニル製のものが好適に用いられる。本実施形態において、連結管３０は、呼び径１００Ａ（外径１１４ｍｍ）、板厚６．６ｍｍの円柱管とする。 The connecting pipe 30 connects between the collective joint 40 provided on the lowest floor and the leg joint 50 provided under the floor on the lowest floor in the piping structure 100. That is, the upstream end of the connecting pipe 30 is connected to the lower vertical pipe connecting portion 43 of the collective joint 40, and the downstream end is connected to the upstream connecting port 51 of the leg joint 50. A gap is provided between the lower vertical pipe connecting portion 43 of the collective joint 40 and the upstream connection port 51 of the leg joint 50, and the connecting pipe 30 is exposed to the outside through the gap.
Further, as the connecting pipe 30, one made of vinyl chloride is preferably used. In the present embodiment, the connecting pipe 30 is a cylindrical pipe having a nominal diameter of 100 A (outer diameter of 114 mm) and a plate thickness of 6.6 mm.

第１遮音カバー６０は、図６に示すように、主に横管２０と集合継手４０との接続部（横管接続部４２）のフランジ部Ｆによる凸型の段差の周囲に設けられる。第１遮音カバー６０は、横管接続部４２において生じる排水音が外部に伝播することを防ぐ。
図２に示すように、第１遮音カバー６０は、遮音材６１と、吸音材６２との積層体である。また、吸音材６２は、遮音材６１の短手方向に、間隔をあけて設けられている。すなわち、本実施形態において、第１遮音カバー６０は、短手方向の中央部に凹型の段差を有している。言い換えれば、第１遮音カバー６０における短手方向の中央部は、遮音材６１が露出している。 As shown in FIG. 6, the first sound insulating cover 60 is mainly provided around a convex step due to the flange portion F of the connecting portion (horizontal pipe connecting portion 42) between the horizontal pipe 20 and the collective joint 40. The first sound insulation cover 60 prevents the drainage sound generated in the horizontal pipe connecting portion 42 from propagating to the outside.
As shown in FIG. 2, the first sound insulating cover 60 is a laminated body of the sound insulating material 61 and the sound absorbing material 62. Further, the sound absorbing material 62 is provided at intervals in the lateral direction of the sound insulating material 61. That is, in the present embodiment, the first sound insulation cover 60 has a concave step in the central portion in the lateral direction. In other words, the sound insulating material 61 is exposed at the central portion of the first sound insulating cover 60 in the lateral direction.

第１遮音カバー６０は、展開時は帯状の形状を有している。ここで帯状とは、方向性がある矩形状（非正方形状）である。帯状とは、互いに直交する２つの辺のうち、第１方向に延びる辺が、第２方向の延びる辺よりも長い形状である。前記第１方向が長手方向であり、前記第２方向が短手方向である。
また、吸音材６２は、遮音材６１の長手方向に沿って設けられている。つまり、遮音材６１と吸音材６２の長手方向の長さは等しい。あるいは、図３に示すように、遮音材６１の長手方向の一方の端部のみ吸音材６２が積層されておらず、遮音材６１が短手方向の全範囲に露出していてもよい。 The first sound insulation cover 60 has a band-like shape when deployed. Here, the band shape is a rectangular shape (non-square shape) having a directionality. The band shape is a shape in which, of the two sides orthogonal to each other, the side extending in the first direction is longer than the side extending in the second direction. The first direction is the longitudinal direction, and the second direction is the lateral direction.
Further, the sound absorbing material 62 is provided along the longitudinal direction of the sound insulating material 61. That is, the lengths of the sound insulating material 61 and the sound absorbing material 62 in the longitudinal direction are equal. Alternatively, as shown in FIG. 3, the sound absorbing material 62 may not be laminated only on one end of the sound insulating material 61 in the longitudinal direction, and the sound insulating material 61 may be exposed in the entire range in the lateral direction.

第２遮音カバー７０は、図８に示すように、主に集合継手４０と、連結管３０と、脚部継手５０との接続部に生じる凹型の段差３１に設けられる。第２遮音カバー７０は、段差３１において生じる排水音が外部に伝播することを防ぐ。段差３１は、集合継手４０の下端面と、連結管３０の外周面と、脚部継手５０の上端面と、によって形成される。段差３１は、環状の凹部である。段差３１は、連結管３０の全周にわたって連続して延びている。
図４に示すように、第２遮音カバー７０は、遮音材７１と、吸音材７２との積層体である。また、吸音材７２は、遮音材７１の短手方向の中央部に設けられている。すなわち、本実施形態において、第２遮音カバー７０は、短手方向の中央部に凸型の段差を有している。言い換えれば、第２遮音カバー７０における短手方向の両端は、遮音材７１が露出している。 As shown in FIG. 8, the second sound insulation cover 70 is mainly provided on the concave step 31 generated at the connection portion between the collective joint 40, the connecting pipe 30, and the leg joint 50. The second sound insulation cover 70 prevents the drainage sound generated at the step 31 from propagating to the outside. The step 31 is formed by a lower end surface of the collective joint 40, an outer peripheral surface of the connecting pipe 30, and an upper end surface of the leg joint 50. The step 31 is an annular recess. The step 31 extends continuously over the entire circumference of the connecting pipe 30.
As shown in FIG. 4, the second sound insulating cover 70 is a laminated body of the sound insulating material 71 and the sound absorbing material 72. Further, the sound absorbing material 72 is provided at the center of the sound insulating material 71 in the lateral direction. That is, in the present embodiment, the second sound insulation cover 70 has a convex step in the central portion in the lateral direction. In other words, the sound insulating material 71 is exposed at both ends of the second sound insulating cover 70 in the lateral direction.

第２遮音カバー７０は、展開時は帯状の形状を有している。また、吸音材７２は、遮音材７１の長手方向に沿って設けられている。つまり、遮音材７１と吸音材７２の長手方向の長さは等しい。あるいは、図５に示すように、遮音材７１の長手方向の一方の端部のみ吸音材７２が積層されておらず、遮音材７１が短手方向の全範囲に露出していてもよい。 The second sound insulation cover 70 has a band-like shape when deployed. Further, the sound absorbing material 72 is provided along the longitudinal direction of the sound insulating material 71. That is, the lengths of the sound insulating material 71 and the sound absorbing material 72 in the longitudinal direction are equal. Alternatively, as shown in FIG. 5, the sound absorbing material 72 may not be laminated only on one end of the sound insulating material 71 in the longitudinal direction, and the sound insulating material 71 may be exposed in the entire range in the lateral direction.

第１遮音カバー６０と第２遮音カバー７０との差異は、吸音材６２及び吸音材７２の短手方向における位置である。つまり、構成部材の材質は、下記の通り同一である。
まず、遮音材６１及び遮音材７１は、主に軟質塩ビやブチルゴム、ポリオレフィンのシートが好適に用いられる。また、その厚さは、０．８～３ｍｍであることが好ましい。
また、吸音材６２及び吸音材７２は、主にフェルト、ポリエステル繊維やウレタン発泡体、グラスウールが好適に用いられる。また、その厚さは、５～１０ｍｍであることが好ましい。吸音材６２及び吸音材７２の厚さに対する遮音材６１及び遮音材７１の厚さの割合は、例えば、８％～６０％となっている。 The difference between the first sound insulating cover 60 and the second sound insulating cover 70 is the position of the sound absorbing material 62 and the sound absorbing material 72 in the lateral direction. That is, the materials of the constituent members are the same as follows.
First, as the sound insulating material 61 and the sound insulating material 71, mainly soft vinyl chloride, butyl rubber, and polyolefin sheets are preferably used. The thickness thereof is preferably 0.8 to 3 mm.
Further, as the sound absorbing material 62 and the sound absorbing material 72, mainly felt, polyester fiber, urethane foam, and glass wool are preferably used. The thickness thereof is preferably 5 to 10 mm. The ratio of the thickness of the sound insulating material 61 and the sound insulating material 71 to the thickness of the sound absorbing material 62 and the sound absorbing material 72 is, for example, 8% to 60%.

上記の部材は、第１遮音カバー６０及び第２遮音カバー７０の取り付け部位や求められる遮音性によって、適宜選択される。
なお、第１遮音カバー６０及び第２遮音カバー７０の長手方向の寸法は、施工現場によって適宜決定することができる。例えば、短手方向の寸法のみあらかじめ決定しておけば、長手方向の寸法については、施工現場で任意の長さに切断して用いることができる。また、その際に、長手方向の端部の吸音材６２及び吸音材７２を削ることで、図３及び図５に示すような状態としてもよい。 The above-mentioned member is appropriately selected depending on the attachment portion of the first sound insulation cover 60 and the second sound insulation cover 70 and the required sound insulation property.
The dimensions of the first sound insulation cover 60 and the second sound insulation cover 70 in the longitudinal direction can be appropriately determined depending on the construction site. For example, if only the dimension in the lateral direction is determined in advance, the dimension in the longitudinal direction can be cut to an arbitrary length at the construction site and used. Further, at that time, the sound absorbing material 62 and the sound absorbing material 72 at the ends in the longitudinal direction may be scraped so as to be in the state shown in FIGS. 3 and 5.

次に、第１遮音カバー６０及び第２遮音カバー７０を、配管構造１００における外面に段差部が形成された配管構成部材に取り付ける施工方法について、説明する。
図６に示すように、第１遮音カバー６０を横管接続部４２へ取付ける際は、吸音材６２を内側にして、帯状の長手方向を周囲に巻き付ける。このとき、図３のように、遮音材６１の端部が短手方向の全範囲に露出しているときは、第１遮音カバー６０を巻き付けた後に、遮音材６１の端部をもう一方の端部に重ねて固定する。
第１遮音カバー６０を巻き付けた後は、結束バンドやテープを周囲に巻き付けて固定する。また、図３のように、遮音材６１の端部が短手方向の全範囲に露出しているときは、露出している部位に面ファスナー６３を設けて、遮音材６１のもう一方の端部の不図示の面ファスナーに貼りつけてもよい。 Next, a construction method in which the first sound insulation cover 60 and the second sound insulation cover 70 are attached to a pipe component having a stepped portion on the outer surface of the pipe structure 100 will be described.
As shown in FIG. 6, when the first sound insulating cover 60 is attached to the horizontal pipe connecting portion 42, the sound absorbing material 62 is turned inside and the strip-shaped longitudinal direction is wound around the circumference. At this time, as shown in FIG. 3, when the end portion of the sound insulating material 61 is exposed in the entire range in the lateral direction, after winding the first sound insulating cover 60, the end portion of the sound insulating material 61 is attached to the other end. Stack and fix on the edge.
After wrapping the first sound insulation cover 60, wrap a binding band or tape around it to fix it. Further, as shown in FIG. 3, when the end portion of the sound insulating material 61 is exposed in the entire range in the lateral direction, a hook-and-loop fastener 63 is provided on the exposed portion to provide the other end of the sound insulating material 61. It may be attached to a surface fastener (not shown) of the portion.

図６に示すように、第１遮音カバー６０を横管接続部４２へ取り付けると、横管２０の軸方向において、吸音材６２が横管接続部４２の両側を挟むように接する。また、横管接続部４２の径方向には吸音材６２が設けられておらず、遮音材６１が直接横管接続部４２に接する。
ここで、図７に示すように、吸音材６２が遮音材６１の短手方向の全範囲に設けられていると、横管接続部４２に取り付けたとき、吸音材６２が横管接続部４２に沿って変形する。結果として、第１遮音カバー６０が横管接続部４２の付近で径方向に膨らんだ状態になる。 As shown in FIG. 6, when the first sound insulating cover 60 is attached to the horizontal pipe connecting portion 42, the sound absorbing material 62 is in contact with the horizontal pipe connecting portion 42 so as to sandwich both sides thereof in the axial direction of the horizontal pipe 20. Further, the sound absorbing material 62 is not provided in the radial direction of the horizontal pipe connecting portion 42, and the sound insulating material 61 is in direct contact with the horizontal pipe connecting portion 42.
Here, as shown in FIG. 7, if the sound absorbing material 62 is provided in the entire range of the sound insulating material 61 in the lateral direction, the sound absorbing material 62 is attached to the horizontal pipe connecting portion 42 when the sound absorbing material 62 is attached to the horizontal pipe connecting portion 42. Transforms along. As a result, the first sound insulation cover 60 is in a state of swelling in the radial direction in the vicinity of the horizontal pipe connecting portion 42.

このとき、例えば、図１に示すように、横管接続部４２が床スラブＳの近くに設けられていると、第１遮音カバー６０の施工性が悪くなる。あるいは、スペースが足りずに第１遮音カバー６０が施工できなくなる。すなわち、第１遮音カバー６０において吸音材６２が短手方向に間隔をあけて設けられていることで、図６に示すように、第１遮音カバー６０が径方向に膨らむことなく取り付けることができる。また、横管接続部４２は、例えば、横管２０及び集水室４４と比較して径方向の板厚が大きい。そのため、吸音材６２が接している部位と比較して排水音が外部に伝わりにくい。そのため、短手方向に凹型の形状を有する第１遮音カバー６０によって、横管接続部４２を避けて吸音材６２を設けることで、施工性を良好にしつつ、遮音性を確保する。 At this time, for example, if the horizontal pipe connecting portion 42 is provided near the floor slab S as shown in FIG. 1, the workability of the first sound insulating cover 60 deteriorates. Alternatively, the space is insufficient and the first sound insulation cover 60 cannot be installed. That is, since the sound absorbing material 62 is provided at intervals in the lateral direction in the first sound insulating cover 60, the first sound insulating cover 60 can be attached without swelling in the radial direction as shown in FIG. .. Further, the horizontal pipe connecting portion 42 has a larger plate thickness in the radial direction than, for example, the horizontal pipe 20 and the water collecting chamber 44. Therefore, the drainage sound is less likely to be transmitted to the outside as compared with the portion where the sound absorbing material 62 is in contact. Therefore, by providing the sound absorbing material 62 while avoiding the horizontal pipe connecting portion 42 by the first sound insulating cover 60 having a concave shape in the lateral direction, the sound insulating property is ensured while improving the workability.

図８に示すように、第２遮音カバー７０を段差３１へ取付ける際は、吸音材７２を内側にして、帯状の長手方向を周囲に巻き付ける。このとき、図５のように、遮音材７１の端部が短手方向の全範囲に露出しているときは、第２遮音カバー７０を巻き付けた後に、遮音材７１の端部をもう一方の端部に重ねて固定する。
第２遮音カバー７０を巻き付けた後は、結束バンドやテープを周囲に巻き付けて固定する。また、図５のように、遮音材７１の端部が短手方向の全範囲に露出しているときは、露出している部位に面ファスナー７３を設けて、遮音材７１のもう一方の端部の不図示の面ファスナーに貼りつけてもよい。 As shown in FIG. 8, when the second sound insulating cover 70 is attached to the step 31, the sound absorbing material 72 is turned inside and the strip-shaped longitudinal direction is wound around the circumference. At this time, as shown in FIG. 5, when the end portion of the sound insulating material 71 is exposed in the entire range in the lateral direction, after winding the second sound insulating cover 70, the end portion of the sound insulating material 71 is attached to the other end portion. Stack and fix on the edge.
After wrapping the second sound insulation cover 70, wrap a binding band or tape around it to fix it. Further, as shown in FIG. 5, when the end portion of the sound insulating material 71 is exposed in the entire range in the lateral direction, a hook-and-loop fastener 73 is provided on the exposed portion to provide the other end of the sound insulating material 71. It may be attached to a surface fastener (not shown) of the portion.

図８に示すように、第２遮音カバー７０を段差３１へ取り付けると、連結管３０の軸方向において、吸音材７２が段差３１に入り込むように接する。また、集合継手４０の端部及び脚部継手５０の端部に接する部位には吸音材７２が設けられておらず、遮音材７１が直接集合継手４０の端部及び脚部継手５０の端部に接する。
ここで、図９に示すように、吸音材７２が遮音材７１の短手方向の全範囲に設けられていると、段差３１に取り付けたとき、吸音材７２が集合継手４０の端部及び脚部継手５０の端部のみに接し、段差３１に沿って吸音材７２が変形することはない。結果として、脚部継手５０の径に吸音材７２の厚さが加わり、第２遮音カバー７０が段差３１を覆い隠したような状態になる。 As shown in FIG. 8, when the second sound insulating cover 70 is attached to the step 31, the sound absorbing material 72 comes into contact with the step 31 in the axial direction of the connecting pipe 30. Further, the sound absorbing material 72 is not provided at the end of the collective joint 40 and the portion in contact with the end of the leg joint 50, and the sound insulating material 71 is directly attached to the end of the collective joint 40 and the end of the leg joint 50. In contact with.
Here, as shown in FIG. 9, if the sound absorbing material 72 is provided in the entire range of the sound insulating material 71 in the lateral direction, the sound absorbing material 72 is attached to the end portion and the leg of the collective joint 40 when attached to the step 31. The sound absorbing material 72 is in contact with only the end of the joint 50, and the sound absorbing material 72 is not deformed along the step 31. As a result, the thickness of the sound absorbing material 72 is added to the diameter of the leg joint 50, and the second sound insulating cover 70 is in a state of covering the step 31.

このとき、例えば、脚部継手５０が床下の壁の近くに設けられていると、第２遮音カバー７０の施工性が悪くなる。あるいは、スペースが足りずに第２遮音カバー７０が施工できなくなる。すなわち、第２遮音カバー７０において吸音材７２が短手方向の中央部に設けられていることで、図８に示すように、脚部継手５０の端部に吸音材７２の厚さが加わった状態にならずに、第２遮音カバー７０を取付けることができる。また、集合継手４０及び脚部継手５０は、連結管３０と比較して径方向の板厚が大きい。そのため、吸音材７２が接している部位と比較して排水音が外部に伝わりにくい。そのため、短手方向に凸型の形状を有する第２遮音カバー７０によって、段差３１に密着するように吸音材７２を設けることで、施工性を良好にしつつ、遮音性を確保する。 At this time, for example, if the leg joint 50 is provided near the wall under the floor, the workability of the second sound insulation cover 70 deteriorates. Alternatively, the second sound insulation cover 70 cannot be installed due to insufficient space. That is, since the sound absorbing material 72 is provided in the central portion in the lateral direction in the second sound insulating cover 70, the thickness of the sound absorbing material 72 is added to the end portion of the leg joint 50 as shown in FIG. The second sound insulation cover 70 can be attached without being in a state. Further, the collective joint 40 and the leg joint 50 have a larger radial plate thickness than the connecting pipe 30. Therefore, the drainage sound is less likely to be transmitted to the outside as compared with the portion where the sound absorbing material 72 is in contact. Therefore, by providing the sound absorbing material 72 so as to be in close contact with the step 31 by the second sound insulating cover 70 having a convex shape in the lateral direction, the sound insulating property is ensured while improving the workability.

なお、上述の第１遮音カバー６０及び第２遮音カバー７０は、取付け部の形状及び用途に応じて適宜選択可能である。あるいは、配管構造１００においてどちらか１つのみ用いてもよいし、両方用いてもよい。両方用いる場合は、より多くの範囲を遮音することができるため、より配管構造１００全体の遮音性を確保することが期待できる。
さらに、集合継手４０を覆う遮音カバーと一体に設けられていてもよい。また、この遮音カバーと別々に設けられた上で、この遮音カバーの上側に積層されていたり、この遮音カバーの下側に積層されていてもよい。 The above-mentioned first sound insulation cover 60 and second sound insulation cover 70 can be appropriately selected according to the shape and application of the mounting portion. Alternatively, only one of them may be used in the piping structure 100, or both may be used. When both are used, it is possible to insulate sound in a larger range, so that it can be expected that the sound insulation of the entire piping structure 100 can be secured.
Further, it may be provided integrally with the sound insulating cover that covers the collective joint 40. Further, it may be provided separately from the sound insulation cover and laminated on the upper side of the sound insulation cover, or may be laminated on the lower side of the sound insulation cover.

以上説明したように、本実施形態に係る第１遮音カバー６０によれば、吸音材６２が帯状の遮音材６１の短手方向の両端部に間隔をあけて設けられている。すなわち、第１遮音カバー６０の短手方向において、中央部が凹となる段差を有している。
この遮音カバーを、例えば、集合継手４０と横管２０との接続部に生じるフランジ部Ｆ（凸型の段差）に巻き付けたとき、第１遮音カバー６０の短手方向の両端部に設けられた吸音材６２が、横管２０の軸方向においてフランジ部Ｆの両側を挟むように接する。それに加えて、横管２０の径方向においてフランジ部Ｆと第１遮音カバー６０が接する部位には吸音材６２が設けられておらず、遮音材６１が直接フランジ部Ｆに接する。 As described above, according to the first sound insulating cover 60 according to the present embodiment, the sound absorbing material 62 is provided at both ends of the band-shaped sound insulating material 61 in the lateral direction at intervals. That is, the first sound insulation cover 60 has a step in which the central portion is concave in the lateral direction.
When this sound insulation cover is wound around a flange portion F (convex step) generated at a connection portion between the collective joint 40 and the horizontal pipe 20, for example, it is provided at both ends of the first sound insulation cover 60 in the lateral direction. The sound absorbing material 62 is in contact with the horizontal pipe 20 so as to sandwich both sides of the flange portion F in the axial direction. In addition, the sound absorbing material 62 is not provided at the portion where the flange portion F and the first sound insulating cover 60 are in contact with each other in the radial direction of the horizontal pipe 20, and the sound insulating material 61 is in direct contact with the flange portion F.

ここで、フランジ部Ｆと接する部位に吸音材６２が設けられていると、第１遮音カバー６０をフランジ部Ｆに巻き付けたとき、吸音材６２がフランジ部Ｆに沿って変形する。すなわち、第１遮音カバー６０全体がフランジ部Ｆ付近で径方向に膨らんだ形状になる。つまり、凸型の段差部に対する追従性が悪くなる。
そのため、第１遮音カバー６０におけるフランジ部Ｆに接する部位（第１遮音カバー６０の短手方向の中央部）が凹の形状になっていることで、フランジ部Ｆ付近で第１遮音カバー６０が膨らんだ形状になることを防ぐことができる。すなわち、フランジ部Ｆに対する形状の追従性を確保することができる。
これにより、例えば、フランジ部Ｆの縁と施工場所の壁との距離が狭く、空間が十分に確保できない場合であっても、第１遮音カバー６０を設けることができる。つまり、施工性を良好にすることができる。 Here, if the sound absorbing material 62 is provided at the portion in contact with the flange portion F, the sound absorbing material 62 is deformed along the flange portion F when the first sound insulating cover 60 is wound around the flange portion F. That is, the entire first sound insulation cover 60 has a shape that bulges in the radial direction near the flange portion F. That is, the followability to the convex step portion is deteriorated.
Therefore, the portion of the first sound insulation cover 60 in contact with the flange portion F (the central portion in the lateral direction of the first sound insulation cover 60) has a concave shape, so that the first sound insulation cover 60 is located near the flange portion F. It is possible to prevent the shape from becoming bulging. That is, it is possible to secure the followability of the shape with respect to the flange portion F.
Thereby, for example, even when the distance between the edge of the flange portion F and the wall of the construction site is narrow and sufficient space cannot be secured, the first sound insulation cover 60 can be provided. That is, the workability can be improved.

また、本実施形態に係る第２遮音カバー７０によれば、吸音材７２が帯状の遮音材７１の短手方向の中央部のみに取り付けられる。すなわち、第２遮音カバー７０の短手方向において、中央部が凸となる段差３１を有している。
この第２遮音カバー７０を、例えば、脚部継手５０と、脚部継手５０より小径な縦管１０との接続部に生じる凹型の段差３１に巻き付けたとき、第２遮音カバー７０の短手方向の中央部に設けられた吸音材７２が、前述の凹型の段差３１に入り込むように接する。それに加えて、第２遮音カバー７０と脚部継手５０の端部及び縦管１０の端部とが接する部位には吸音材７２が設けられておらず、遮音材７１が直接脚部継手５０の端部及び縦管１０の端部に接する。 Further, according to the second sound insulating cover 70 according to the present embodiment, the sound absorbing material 72 is attached only to the central portion of the band-shaped sound insulating material 71 in the lateral direction. That is, it has a step 31 whose central portion is convex in the lateral direction of the second sound insulation cover 70.
When the second sound insulation cover 70 is wound around, for example, a concave step 31 generated at the connection portion between the leg joint 50 and the vertical pipe 10 having a diameter smaller than that of the leg joint 50, the lateral direction of the second sound insulation cover 70 The sound absorbing material 72 provided in the central portion of the above is in contact with the concave step 31 so as to enter the above-mentioned concave step 31. In addition, the sound absorbing material 72 is not provided at the portion where the second sound insulating cover 70 and the end of the leg joint 50 and the end of the vertical pipe 10 are in contact with each other, and the sound insulating material 71 is directly attached to the leg joint 50. It touches the end portion and the end portion of the vertical pipe 10.

ここで、脚部継手５０の端部及び縦管１０の端部に接する部位に吸音材７２が設けられていると、第２遮音カバー７０を凹型の段差３１に巻き付けたとき、吸音材７２が脚部継手５０の端部のみに接し、縦管１０に沿って吸音材７２が変形することはない。つまり、脚部継手５０の径に吸音材７２の厚さが加わり、第２遮音カバー７０が凹部を覆い隠したような形状になる。すなわち、凹型の段差３１に対する追従性が悪くなる。
そのため、凹型の段差３１に接する部位（第２遮音カバー７０の短手方向の中央部）が凸の形状になっていることで、脚部継手５０の端部に吸音材７２の厚さが加わった状態になることを防ぐことができる。さらに、効率的に凹部に吸音材７２を密着させることができる。つまり、凹型の段差３１に対する形状の追従性を確保することができる。
これにより、例えば、脚部継手５０と施工場所の壁との距離が狭く、空間が十分に確保できない場合であっても、第２遮音カバー７０を設けることができる。つまり、施工性を良好にすることができる。 Here, if the sound absorbing material 72 is provided at a portion in contact with the end of the leg joint 50 and the end of the vertical pipe 10, when the second sound insulating cover 70 is wound around the concave step 31, the sound absorbing material 72 is provided. The sound absorbing material 72 is not deformed along the vertical pipe 10 in contact with only the end portion of the leg joint 50. That is, the thickness of the sound absorbing material 72 is added to the diameter of the leg joint 50, and the shape is such that the second sound insulating cover 70 covers the concave portion. That is, the followability to the concave step 31 is deteriorated.
Therefore, the portion in contact with the concave step 31 (the central portion in the lateral direction of the second sound insulation cover 70) has a convex shape, so that the thickness of the sound absorbing material 72 is added to the end portion of the leg joint 50. It is possible to prevent the state from becoming a state. Further, the sound absorbing material 72 can be efficiently brought into close contact with the recess. That is, it is possible to secure the followability of the shape to the concave step 31.
Thereby, for example, even when the distance between the leg joint 50 and the wall of the construction site is narrow and sufficient space cannot be secured, the second sound insulation cover 70 can be provided. That is, the workability can be improved.

また、遮音カバー６０、７０は段差部（フランジ部Ｆ又は段差３１）の形状に合わせて固定されている。このことによって、吸音材６２、７２によって遮音カバー６０、７０の追従性が悪くなることを防ぐことができる。すなわち、空間が狭い施工場所であっても遮音カバー６０、７０の施工性を良好にしつつ、遮音性を確保することができる。 Further, the sound insulation covers 60 and 70 are fixed according to the shape of the step portion (flange portion F or step 31). This makes it possible to prevent the sound absorbing materials 62 and 72 from deteriorating the followability of the sound insulating covers 60 and 70. That is, it is possible to secure the sound insulation while improving the workability of the sound insulation covers 60 and 70 even in a construction place where the space is narrow.

また、本願に係る遮音カバー６０、７０は、配管構成部材の段差部周辺のみを覆うことを目的としている。ここで、段差部を含む配管構成部材全体を一つの遮音カバー６０、７０で覆うとした場合、遮音カバー６０、７０が大きくなり、更に形状が複雑になることが考えられる。
すなわち、段差部周辺のみを覆うことを目的とした遮音カバー６０、７０を有することで、小面積化及び形状の簡素化が可能になる。そのため、遮音カバー６０、７０にかかる費用を削減することができる。 Further, the sound insulation covers 60 and 70 according to the present application are intended to cover only the periphery of the stepped portion of the piping constituent member. Here, if the entire piping component including the step portion is covered with one sound insulation cover 60, 70, it is conceivable that the sound insulation covers 60, 70 become large and the shape becomes more complicated.
That is, by having the sound insulation covers 60 and 70 for the purpose of covering only the periphery of the step portion, it is possible to reduce the area and simplify the shape. Therefore, the cost for the sound insulation covers 60 and 70 can be reduced.

また、遮音カバー６０、７０を、吸音材６２、７２が、配管構成部材の段差部を避けて接するように固定する。
このことによって、吸音材６２、７２が段差部を避けて配管構成部材に密着する。これにより、管内を排水が流れたことによって生じる音を吸収することができる。また、吸音材６２、７２の外側に遮音材６１、７１が設けられていることで、前述の音が外部に漏れることを抑えることができる。ここで、吸音材６２、７２が接しない段差部（例えば、フランジ部Ｆ又は脚部継手５０端部）は、吸音材６２、７２が接する部位に対して比較的肉厚になる。そのため、吸音材６２、７２が接する部位と比べて音が外に伝わりにくい。よって、遮音材６１、７１によって覆うのみで、遮音性を確保することができる。
すなわち、空間が狭い施工場所であっても遮音カバー６０、７０の施工性を良好にしつつ、遮音性を確保することができる。 Further, the sound insulating covers 60 and 70 are fixed so that the sound absorbing materials 62 and 72 are in contact with each other while avoiding the stepped portion of the piping constituent member.
As a result, the sound absorbing materials 62 and 72 are in close contact with the piping constituent members while avoiding the stepped portion. This makes it possible to absorb the sound generated by the drainage flowing through the pipe. Further, by providing the sound insulating materials 61 and 71 on the outside of the sound absorbing materials 62 and 72, it is possible to suppress the above-mentioned sound from leaking to the outside. Here, the stepped portion (for example, the flange portion F or the end portion of the leg joint 50) that the sound absorbing materials 62 and 72 do not contact is relatively thick with respect to the portion that the sound absorbing materials 62 and 72 contact. Therefore, it is difficult for the sound to be transmitted to the outside as compared with the portion where the sound absorbing materials 62 and 72 are in contact with each other. Therefore, the sound insulation can be ensured only by covering with the sound insulation materials 61 and 71.
That is, it is possible to secure the sound insulation while improving the workability of the sound insulation covers 60 and 70 even in a construction place where the space is narrow.

なお、本発明の技術的範囲は前記実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。
例えば、第１遮音カバー６０の短手方向に間隔をあけて設けられている吸音材６２は、短手方向の中央部において３個以上設けられていてもよい。あるいは、短手方向の一方の端部のみに、１箇所だけ設けられていてもよい。
また、吸音材７２は、第２遮音カバー７０における短手方向の両端部において遮音材７１が露出していれば、中央部に位置していなくてもよい。
また、吸音材６２及び吸音材７２は、第１遮音カバー６０及び第２遮音カバー７０の長手方向において、間隔をあけて設けてもよい。
また、遮音材６１及び遮音材７１の長手方向の端部に設けられる面ファスナー６３及び面ファスナー７３は、両面テープを用いてもよい。 The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, three or more sound absorbing materials 62 provided at intervals in the lateral direction of the first sound insulating cover 60 may be provided in the central portion in the lateral direction. Alternatively, only one location may be provided at only one end in the lateral direction.
Further, the sound absorbing material 72 does not have to be located at the central portion as long as the sound insulating material 71 is exposed at both ends of the second sound insulating cover 70 in the lateral direction.
Further, the sound absorbing material 62 and the sound absorbing material 72 may be provided at intervals in the longitudinal direction of the first sound insulating cover 60 and the second sound insulating cover 70.
Further, double-sided tape may be used for the hook-and-loop fastener 63 and the hook-and-loop fastener 73 provided at the end portions of the sound insulating material 61 and the sound insulating material 71 in the longitudinal direction.

その他、本発明の趣旨に逸脱しない範囲で、前記実施形態における構成要素を周知の構成要素に置き換えることは適宜可能であり、また、前記した変形例を適宜組み合わせてもよい。 In addition, it is appropriately possible to replace the constituent elements in the above-described embodiment with well-known constituent elements without departing from the spirit of the present invention, and the above-mentioned modifications may be appropriately combined.

６０ 第１遮音カバー
６１ 遮音材
６２ 吸音材
７０ 第２遮音カバー
７１ 遮音材
７２ 吸音材
１００ 配管構造 60 1st sound insulation cover 61 Sound insulation material 62 Sound absorption material 70 2nd sound insulation cover 71 Sound insulation material 72 Sound absorption material 100 Piping structure

Claims (4)

帯状の遮音材と、
前記遮音材に積層され、前記遮音材の長手方向に沿って設けられる吸音材と、
を備え、
前記吸音材は、前記遮音材の短手方向に間隔をあけて設けられている、
遮音カバー。 With a band-shaped sound insulation material,
A sound absorbing material laminated on the sound insulating material and provided along the longitudinal direction of the sound insulating material, and a sound absorbing material.
Equipped with
The sound absorbing material is provided at intervals in the lateral direction of the sound insulating material.
Sound insulation cover. 帯状の遮音材と、
前記遮音材に積層され、前記遮音材の長手方向に沿って設けられる吸音材と、
を備え、
前記吸音材は、前記遮音材の短手方向の中央部に設けられている、
遮音カバー。 With a band-shaped sound insulation material,
A sound absorbing material laminated on the sound insulating material and provided along the longitudinal direction of the sound insulating material, and a sound absorbing material.
Equipped with
The sound absorbing material is provided at the center of the sound insulating material in the lateral direction.
Sound insulation cover. 外面に段差部が形成された配管構成部材と、
請求項１または２に記載の遮音カバーと、
を備え、
前記遮音カバーは、前記段差部の形状に合わせて固定されている、
配管構造。 Piping components with a step on the outer surface and
The sound insulation cover according to claim 1 or 2,
Equipped with
The sound insulation cover is fixed according to the shape of the step portion.
Piping structure. 外面に段差部が形成された配管構成部材における遮音カバーの施工方法であって、
請求項１または２に記載の遮音カバーを、前記吸音材が、前記配管構成部材の前記段差部を避けて接するように固定する、
遮音カバーの施工方法。 It is a method of constructing a sound insulation cover in a piping component having a stepped portion on the outer surface.
The sound insulating cover according to claim 1 or 2 is fixed so that the sound absorbing material comes into contact with the pipe component so as to avoid the stepped portion.
How to install the sound insulation cover.
JP2020157171A 2020-09-18 2020-09-18 Sound-insulating cover and piping structure, method for constructing sound-insulating cover Pending JP2022050961A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020157171A JP2022050961A (en) 2020-09-18 2020-09-18 Sound-insulating cover and piping structure, method for constructing sound-insulating cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020157171A JP2022050961A (en) 2020-09-18 2020-09-18 Sound-insulating cover and piping structure, method for constructing sound-insulating cover

Publications (1)

Publication Number Publication Date
JP2022050961A true JP2022050961A (en) 2022-03-31

Family

ID=80854767

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020157171A Pending JP2022050961A (en) 2020-09-18 2020-09-18 Sound-insulating cover and piping structure, method for constructing sound-insulating cover

Country Status (1)

Country Link
JP (1) JP2022050961A (en)

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