JP4994018B2 - building - Google Patents

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JP4994018B2
JP4994018B2 JP2006340448A JP2006340448A JP4994018B2 JP 4994018 B2 JP4994018 B2 JP 4994018B2 JP 2006340448 A JP2006340448 A JP 2006340448A JP 2006340448 A JP2006340448 A JP 2006340448A JP 4994018 B2 JP4994018 B2 JP 4994018B2
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toilet room
sound insulation
sound
room
air
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JP2008150874A (en
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雅直 大脇
豊三 東田
大輔 山中
敬一 中村
芳宣 佐藤
一也 結城
直人 松岡
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Kumagai Gumi Co Ltd
Fujimori Sangyo Co Ltd
Fatech Co Ltd
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Kumagai Gumi Co Ltd
Fujimori Sangyo Co Ltd
Fatech Co Ltd
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Description

この発明は、特定の部屋内の換気を行えるとともに、特定の部屋内で発生した音の部屋外への透過量を少なくすることの可能な建物に関する。   The present invention relates to a building that can ventilate a specific room and reduce the amount of sound generated in the specific room to the outside.

トイレ室の出入口のドアの下部に換気のための空気流通口（アンダーカット）が設けられた構成の建物が知られている。
特開２０００−１４５１８０号公報 2. Description of the Related Art A building having a structure in which an air circulation port (undercut) for ventilation is provided at a lower part of a door in a toilet room is known.
JP 2000-145180 A

しかしながら、上述した建物では、トイレ室内で発生した音が空気流通口を経由して部屋外へ伝播してしまうという課題があった。   However, in the above-described building, there is a problem that sound generated in the toilet room propagates to the outside of the room via the air circulation port.

本発明による建物は、複数戸からなる集合住宅を構成し、床が床スラブの上に設置された複数の床支持具と床支持具に敷設された複数の床材とを備えた二重床により形成された建物であって、トイレ室と、トイレ室内の空気をトイレ室外に排出するための排気手段と、トイレ室への出入口を経由して隣り合うトイレ室とトイレ室以外の建物内部との間の空気の流通を遮断する遮断手段と、トイレ室の床板の端面と一戸を区画する壁との縁を切る隙間により形成されて床下空間とトイレ室内とに通じる空気供給孔と、トイレ室内に設置された遮音ダクトとを備え、遮音ダクトは、一端側開放口と空気供給孔とが互いに繋がれ、他端側開放口がトイレ室内に開放されたことによって、トイレ室内と空気供給孔とを繋ぐ遮音経路を形成した。
トイレ室以外の複数の部屋の床板の端面と一戸を区画する壁との縁を切る隙間により形成されてトイレ室以外の部屋と床下空間とに通じる空気取込孔を備え、トイレ室への出入口を経由するトイレ室とトイレ室以外の建物内部との間の空気の流通が遮断手段により遮断され、かつ、排気手段の駆動によりトイレ室内が負圧になった場合に、トイレ室以外の複数の部屋からの空気が空気取込孔、床下空間、空気供給孔を経由してトイレ室内に供給されるように構成されたことも特徴とする。
遮音経路が、トイレ室の床と天井との間を往復する往復路により形成されたことも特徴とする。
遮音経路が、トイレ室の床と天井との間の蛇行路により形成されたことも特徴とする。
遮音ダクトは遮音構成部を備え、遮音構成部は、外筒体と、外筒体の内側に設けられた内筒体と、外筒体及び内筒体の筒の中心軸の延長する筒の前後の端部において外筒体の端部と内筒体の端部とを互いに繋いで外筒体の端部と内筒体の端部との間を密閉状態に塞ぐ塞体と、外筒体と内筒体と塞体とで囲まれた空気層とを備えたことも特徴とする。 A building according to the present invention constitutes a multi-family housing, and a double floor comprising a plurality of floor supports installed on a floor slab and a plurality of floor materials laid on the floor supports a building formed by, toilet room and an exhaust means for discharging the air in the toilet room outside the toilet room, the toilet room and the building other than the toilet room adjacent via gateway to the toilet room An air supply hole that is formed by a gap that cuts an edge between the end face of the floor plate of the toilet room and the wall that divides one unit, and communicates with the under floor space and the toilet room ; and a sound insulation duct installed in the toilet room, sound insulation ducts are connected to each other and one end side opening port and the air supply hole, by the other end opening port is opened in the toilet room, the toilet compartment And a sound insulation path connecting the air supply hole.
The entrance to the toilet room is provided with an air intake hole that is formed by a gap that cuts the edge between the end face of the floorboard of multiple rooms other than the toilet room and the wall that divides one house, and communicates with the room other than the toilet room and the space under the floor. When the air flow between the toilet room that passes through the building and the inside of the building other than the toilet room is blocked by the blocking means, and the toilet room becomes negative pressure due to the drive of the exhaust means, a plurality of other than the toilet room It is also characterized in that the air from the room is supplied into the toilet room via the air intake hole, the underfloor space, and the air supply hole.
The sound insulation path is formed by a reciprocating path that reciprocates between the floor and the ceiling of the toilet room .
The sound insulation path is also characterized by a meandering path between the floor and the ceiling of the toilet room .
The sound insulation duct includes a sound insulation component, and the sound insulation component includes an outer cylinder, an inner cylinder provided inside the outer cylinder, and a cylinder extending from the central axis of the outer cylinder and the inner cylinder. An outer cylinder that connects the end of the outer cylinder and the end of the inner cylinder to each other at the front and rear ends to seal between the end of the outer cylinder and the end of the inner cylinder in a sealed state; It is also characterized by comprising an air layer surrounded by a body, an inner cylinder, and a closed body .

本発明の建物によれば、トイレ室内の空気をトイレ室外に排出するための排気手段と、トイレ室への出入口を経由して隣り合うトイレ室とトイレ室以外の建物内部との間の空気の流通を遮断する遮断手段と、トイレ室の床板の端面と一戸を区画する壁との縁を切る隙間により形成されて床下空間とトイレ室内とに通じる空気供給孔と、トイレ室内に設置された遮音ダクトとを備え、遮音ダクトは、一端側開放口と空気供給孔とが互いに繋がれ、他端側開放口がトイレ室内に開放されたことによって、トイレ室内と空気供給孔とを繋ぐ遮音経路を形成したので、トイレ室内で発生した音のトイレ室以外への透過量を少なくできるとともに、トイレ室内の換気を効率的に行えるという効果が得られる。
トイレ室以外の複数の部屋の床板の端面と一戸を区画する壁との縁を切る隙間により形成されてトイレ室以外の部屋と床下空間とに通じる空気取込孔を備え、トイレ室への出入口を経由するトイレ室とトイレ室以外の建物内部との間の空気の流通が遮断手段により遮断され、かつ、排気手段の駆動によりトイレ室内が負圧になった場合に、トイレ室以外の複数の部屋からの空気が空気取込孔、床下空間、空気供給孔を経由してトイレ室内に供給されるように構成されたので、トイレ室の換気効率が良くなる。
遮音経路が、床と天井との間を往復する往復路により形成されたので、遮音経路の長さを長くでき、音の減衰効果を向上できる。
遮音経路が、床と天井との間の蛇行路により形成されたので、遮音経路の長さを長くでき、音の減衰効果を向上できる。 According to the building of the present invention, the exhaust means for discharging the air in the toilet room to the outside of the toilet room and the air between the adjacent toilet room and the inside of the building other than the toilet room via the entrance to the toilet room An air supply hole that is formed by a gap that cuts off the edge between the end face of the floorboard of the toilet room and the wall that divides the unit, and an air supply hole that communicates with the underfloor space and the toilet room, and sound insulation installed in the toilet room The sound insulation duct has a sound insulation path that connects the toilet room and the air supply hole by connecting the one end side opening and the air supply hole to each other and opening the other end side opening to the toilet room. since the formed, it is possible to reduce the amount of transmission of the non-toilet room sound generated in the toilet room, the effect is obtained that enables the ventilation of the toilet room efficiently.
The entrance to the toilet room is provided with an air intake hole that is formed by a gap that cuts the edge between the end face of the floorboard of multiple rooms other than the toilet room and the wall that divides one house, and communicates with the room other than the toilet room and the space under the floor. When the air flow between the toilet room that passes through the building and the inside of the building other than the toilet room is blocked by the blocking means, and the toilet room becomes negative pressure due to the drive of the exhaust means, a plurality of other than the toilet room Since the air from the room is supplied to the toilet room via the air intake hole, the underfloor space, and the air supply hole, the ventilation efficiency of the toilet room is improved.
Since the sound insulation path is formed by a reciprocating path that reciprocates between the floor and the ceiling, the length of the sound insulation path can be increased and the sound attenuation effect can be improved.
Since the sound insulation path is formed by the meandering path between the floor and the ceiling, the length of the sound insulation path can be increased and the sound attenuation effect can be improved .

最良の形態１
図１乃至図３は本発明による建物の最良の形態１を示し、図１は建物としてのマンション（集合住宅）における一戸内のトイレ室とトイレ室の天井及び床の部分を断面（図３のＢ−Ｂ断面に相当）で示し、図２はマンションの一戸を断面（図３のＡ−Ａ断面に相当）で示し、図３は一戸の平面図（間取り）を示す。 Best form 1
1 to 3 show the best mode 1 of a building according to the present invention, and FIG. 1 is a sectional view of a toilet room in a single room and a ceiling and a floor of the toilet room in a condominium (a collective housing) as a building (see FIG. 3). 2 is a cross-sectional view (corresponding to the AA cross section of FIG. 3), and FIG. 3 is a plan view of the single house (plan).

図２において、１は床、２は戸境壁、４は天井、５はトイレ室、６は廊下、７は居室（洋室）である。
図３において、ａは玄関、ｂは納戸、ｃは浴室、ｄは居室（和室）、ｅはリビングダイニング、ｆはベランダ、２Ａは戸前廊下側の区画壁、２Ｂはベランダ側の区画壁、２１乃至２６は間仕切り壁である。 In FIG. 2, 1 is a floor, 2 is a boundary wall, 4 is a ceiling, 5 is a toilet room, 6 is a hallway, and 7 is a living room (western room).
In FIG. 3, a is an entrance, b is a storage room, c is a bathroom, d is a living room (Japanese-style room), e is a living dining room, f is a veranda, 2A is a partition wall on the front corridor side, 2B is a partition wall on the veranda side, 21 to 26 are partition walls.

床１は二重床に形成される。二重床は、床スラブ１１と、床スラブ１１上に固定されて配置された複数の床支持具１２と、複数の床支持具１２に固定されて敷設された複数の床板１３とで形成される。床板１３は、床下地材と床仕上材とからなる。尚、図３に示すように、床１の床板１３の端面と一戸の室内を区画する戸境壁２や区画壁２Ａや区画壁２Ｂの内面との間に、隙間Ｓ分の幅で室内と床下空間とに貫通する空間（図３においてハッチングで示した部分）が設けられた構成を備えたので、床板１３の端面と壁とが縁の切れた状態とでき、床板１３の端面と壁とが接触することによるこすれ音の発生をなくすことができる。隙間Ｓの幅は例えば３ｍｍ程度である。
床支持具１２は、例えば上部に床板１３を取付けるための台座１２ａを有する支柱１２ｂを有し、かつこの支柱１２の下部を支持する支承部を有して床スラブ１１面に設置されるクッション部材から成る座部１２ｃを有するものである。 Floor 1 is formed into a double floor. The double floor is formed by a floor slab 11, a plurality of floor supports 12 fixedly arranged on the floor slab 11, and a plurality of floor boards 13 fixed and laid on the plurality of floor supports 12. The The floor board 13 is composed of a floor base material and a floor finishing material. In addition, as shown in FIG. 3, between the end surface of the floor board 13 of the floor 1 and the inner wall of the door boundary wall 2 or the partition wall 2A or the partition wall 2B partitioning one room, the room and the width of the gap S Since it has a structure in which a space (a hatched portion in FIG. 3) is provided through the underfloor space, the end surface and the wall of the floor plate 13 can be in a state of being cut off, and the end surface and the wall of the floor plate 13 It is possible to eliminate the generation of rubbing noise caused by contact with the. The width of the gap S is, for example, about 3 mm.
The floor support 12 has, for example, a support member 12b having a pedestal 12a for attaching the floor board 13 to the upper part, and a support member that supports the lower part of the support pillar 12, and is installed on the floor slab 11 surface. And a seat portion 12c.

天井４は、天井スラブ１５と、天井仕上げボード１６と、天井仕上げボード１６を天井スラブ１５より吊下げるように取付ける取付具１７とで形成される。取付具１７は、例えば、天井スラブ１５に吊下げられた吊りボルト、吊りボルトに取り付けられたハンガー、ハンガーに支持された野縁受け、野縁受けに取り付けられた野縁とにより構成される。
廊下６と特定の部屋としてのトイレ室５とが間仕切り壁２１により仕切られ、廊下６と特定の部屋以外の部屋としての居室７とが間仕切り壁２２により仕切られる。 The ceiling 4 is formed by a ceiling slab 15, a ceiling finishing board 16, and a fixture 17 that attaches the ceiling finishing board 16 so as to be suspended from the ceiling slab 15. The fixture 17 includes, for example, a suspension bolt suspended from the ceiling slab 15, a hanger attached to the suspension bolt, a field receiver supported by the hanger, and a field edge attached to the field receiver.
The hallway 6 and the toilet room 5 as a specific room are partitioned by a partition wall 21, and the hallway 6 and a living room 7 as a room other than the specific room are partitioned by a partition wall 22.

トイレ室５は、便器５ａ、水溜タンク５ｂの他に、排気手段３１と空気供給孔３２と遮音ダクト２００（給気側の遮音ダクト）とを備える。
排気手段３１は、例えば換気扇のような排気装置３１Ａにより形成される。排気装置３１Ａによってトイレ室５より排出された空気は、建物の居住外空間である天井裏空間３３を経由して戸外に通じる図外の排気孔より戸外に排出される。
空気供給孔３２は、トイレ室５の室内と建物の居住外空間である床下空間３５とに跨って貫通する。空気供給孔３２は、例えばトイレ室５の床板１３の端面１３Ａが戸境壁２の内面２Ａより離れて設置されたことによって床板１３の端面１３Ａと戸境壁２の内面２Ａとの間に設けられた隙間Ｓにより形成される。よって、隙間Ｓが空気供給孔３２として機能するとともに、隙間Ｓにより、床板１３の端面１３Ａと戸境壁２の内面２Ａとが縁の切れた状態となるので、床板１３の端面１３Ａと戸境壁２の内面２Ａとが接触することによるこすれ音の発生をなくすことができる。また、床板１３にドリルなどで孔を形成することなく空気供給孔３２を形成できるので、空気供給孔３２の形成作業が容易となり、かつ、床１の見栄えをよくできる。 The toilet room 5 includes an exhaust means 31, an air supply hole 32, and a sound insulation duct 200 (a sound insulation duct on the air supply side) in addition to the toilet 5a and the water tank 5b.
The exhaust means 31 is formed by an exhaust device 31A such as a ventilation fan, for example. The air exhausted from the toilet room 5 by the exhaust device 31A is exhausted to the outside through an unillustrated exhaust hole that communicates with the outside via the ceiling back space 33 that is a non-residential space of the building.
The air supply hole 32 penetrates across the room of the toilet room 5 and the underfloor space 35 that is a non-residential space of the building. The air supply hole 32 is provided, for example, between the end surface 13A of the floor board 13 and the inner surface 2A of the door wall 2 when the end surface 13A of the floor board 13 of the toilet room 5 is installed away from the inner surface 2A of the door wall 2. The gap S is formed. Therefore, the gap S functions as the air supply hole 32, and the gap S causes the end surface 13A of the floor board 13 and the inner surface 2A of the door boundary wall 2 to be in a state where the edges are cut off. Generation of rubbing noise due to contact with the inner surface 2A of the wall 2 can be eliminated. Moreover, since the air supply hole 32 can be formed without forming a hole in the floor board 13 with a drill etc., the formation operation of the air supply hole 32 becomes easy and the appearance of the floor 1 can be improved.

図１を参照し、遮音ダクト２００の構造を説明する。遮音ダクト２００は、トイレ室５の室内に２つ設置される。２つの遮音ダクト２００がトイレ室５に設けられた水溜タンクの両側にそれぞれ個別に位置するようにトイレ室５内に設置したので、トイレ室５のスペースを有効活用でき、統一感のあるトイレ室５の室内を提供できる（図３参照）。遮音ダクト２００は、遮音ダクト２００を形成する筐体２０１の内壁２０２と内部仕切板２０３とによって区画形成された遮音経路２０４を備える。遮音経路２０４は、床１側から天井４側まで延長した後に床１側に戻る方向に延長する往復路２０８により形成される。遮音経路２０４の一端側には一端側開放口２０５を備え、遮音経路１０４の他端側には他端側開放口２０６を備える。遮音経路２０４の一端側開放口２０５と空気供給孔３２とが繋がれる。遮音経路２０４の他端側開放口２０６はトイレ室５の室内に開放される。つまり、遮音経路２０４が空気供給孔３２とトイレ室５の室内とに繋がっており、空気が床下空間３５とトイレ室５の室内との間で遮音経路２０４を経由して移動可能である（即ち、給気が可能である）。内壁２０２の表面と内部仕切板２０３の表面とには、グラスウールやロックウールのような吸音材２０７が設けられる。よって、遮音経路２０４を経由する音は吸音材２０７により減衰する。   The structure of the sound insulation duct 200 will be described with reference to FIG. Two sound insulation ducts 200 are installed in the toilet room 5. Since the two sound insulation ducts 200 are installed in the toilet room 5 so as to be individually located on both sides of the water tank provided in the toilet room 5, the space of the toilet room 5 can be used effectively, and the toilet room has a sense of unity. 5 rooms can be provided (see FIG. 3). The sound insulation duct 200 includes a sound insulation path 204 defined by an inner wall 202 of the housing 201 and the internal partition plate 203 that form the sound insulation duct 200. The sound insulation path 204 is formed by a reciprocating path 208 that extends from the floor 1 side to the ceiling 4 side and then extends in a direction returning to the floor 1 side. One end side of the sound insulation path 204 is provided with one end side opening 205, and the other end side of the sound insulation path 104 is provided with the other end side opening 206. One end side opening 205 of the sound insulation path 204 and the air supply hole 32 are connected. The other end side opening 206 of the sound insulation path 204 is opened into the toilet room 5. That is, the sound insulation path 204 is connected to the air supply hole 32 and the interior of the toilet room 5, and air can move between the underfloor space 35 and the interior of the toilet room 5 via the sound insulation path 204 (that is, , Air supply is possible). A sound absorbing material 207 such as glass wool or rock wool is provided on the surface of the inner wall 202 and the surface of the inner partition plate 203. Therefore, the sound passing through the sound insulation path 204 is attenuated by the sound absorbing material 207.

図２に戻って、トイレ室５への人の出入口４１は、開口部４２と建具枠と建具と遮断手段４５とにより構成される。例えば、間仕切り壁２１に形成された開口部４２と、開口部４２の周縁に設けられた建具枠としてのドア枠４３と、ドア枠４３に開閉可能に設けられた建具としてのドア４４と、ドア４４が閉じられた場合に開口部４２を経由するトイレ室５の室内と廊下６との間の空気の流通を遮断する遮断手段４５とを備える。遮断手段４５は、例えば、閉じられたドア４４のトイレ室５側の面の周縁と、この周縁と気密状態を維持して接触するようにドア枠４３の周縁に設けられたゴム４６とにより構成される。よって、ドア４４が閉じられた場合に、遮断手段４５によって開口部４２を経由するトイレ室５の室内と廊下６との間の空気の流通が遮断される。   Returning to FIG. 2, the entrance 41 of the person to the toilet room 5 is constituted by an opening 42, a joinery frame, a joinery, and a blocking means 45. For example, an opening 42 formed in the partition wall 21, a door frame 43 as a fitting frame provided at the periphery of the opening 42, a door 44 as a fitting provided in the door frame 43 so as to be openable and closable, And a blocking means 45 for blocking the flow of air between the interior of the toilet room 5 via the opening 42 and the corridor 6 when 44 is closed. The blocking means 45 includes, for example, a peripheral edge of the surface of the closed door 44 on the toilet room 5 side, and a rubber 46 provided on the peripheral edge of the door frame 43 so as to be in contact with the peripheral edge while maintaining an airtight state. Is done. Therefore, when the door 44 is closed, the air flow between the interior of the toilet room 5 and the corridor 6 via the opening 42 is blocked by the blocking means 45.

トイレ室５以外の部屋、即ち、特定の部屋以外の部屋（特定の部屋以外の建物内部）としての居室７、納戸ｂ、居室（和室）ｄ、リビングダイニングｅ、廊下６等のいずれか又は全ては、空気取込孔５１を備える。空気取込孔５１は、特定の部屋以外の建物の居住空間と居住外空間である床下空間３５とに跨って貫通する。空気取込孔５１は、例えば特定の部屋以外の部屋の床板１３の端面１３Ａが壁２や２Ａや２Ｂの内面２Ａより離れて設置されたことによって床板１３の端面１３Ａと壁の内面２Ａとの間に設けられた隙間Ｓにより形成される。よって、隙間Ｓが空気取込孔５１として機能するとともに、隙間Ｓにより、床板１３の端面１３Ａと壁の内面２Ａとが縁の切れた状態となるので、床板１３の端面１３Ａと壁の内面２Ａとが接触することによるこすれ音の発生をなくすことができる。また、床板１３にドリルなどで孔を形成することなく空気取込孔５１を形成できるので、空気取込孔５１の形成作業が容易となり、かつ、床１の見栄えをよくできる。   Any or all of a room other than the toilet room 5, that is, a living room 7, a storage room b, a living room (Japanese room) d, a living dining room e, a corridor 6, etc. as a room other than a specific room (inside the building other than the specific room) Includes an air intake hole 51. The air intake hole 51 penetrates across the living space of the building other than the specific room and the underfloor space 35 which is a non-residential space. The air intake hole 51 is formed, for example, between the end surface 13A of the floor plate 13 and the inner surface 2A of the wall by setting the end surface 13A of the floor plate 13 of a room other than a specific room apart from the inner surfaces 2A of the walls 2, 2A, and 2B. It is formed by a gap S provided therebetween. Accordingly, the gap S functions as the air intake hole 51, and the gap S causes the end surface 13A of the floor board 13 and the inner surface 2A of the wall to be cut off from each other. Therefore, the end surface 13A of the floor board 13 and the inner surface 2A of the wall The generation of rubbing noise due to contact with can be eliminated. Moreover, since the air intake hole 51 can be formed without forming a hole in the floor board 13 with a drill or the like, the work of forming the air intake hole 51 is facilitated, and the appearance of the floor 1 can be improved.

最良の形態１によれば、遮断手段４５が、開口部４２を経由するトイレ室５の室内と廊下６との間の空気の流通経路を遮断することにより、アンダーカットのような物理的な開口部がなくなって、遮音性能が向上するので、トイレ室５の室内で発生した音の廊下６への透過量を少なくできるとともに、開口部４２を経由するトイレ室５の室内と廊下６との間の空気の流通経路が遮断手段４５により遮断された場合でも、排気装置３１Ａの駆動によりトイレ室５の室内が負圧になると、特定の部屋以外の部屋としての居室７、納戸ｂ、居室（和室）ｄ、リビングダイニングｅ、廊下６等の室内から空気が、空気取込孔５１と空気供給孔３２とを繋ぐ空気流通経路６０を経由してトイレ室５の室内に供給されるため、トイレ室５の換気を効率的に行える。   According to the best mode 1, the blocking means 45 blocks the air flow path between the interior of the toilet room 5 and the corridor 6 via the opening 42, thereby providing a physical opening such as an undercut. Since the sound insulation performance is improved by eliminating the portion, the amount of sound generated in the room of the toilet room 5 through the hallway 6 can be reduced and between the room of the toilet room 5 via the opening 42 and the hallway 6. Even when the air flow path is blocked by the shut-off means 45, if the interior of the toilet room 5 becomes negative pressure due to the drive of the exhaust device 31A, the room 7, the storage room b, and the room (Japanese-style room) as rooms other than the specific room ) Since the air is supplied from the room such as d, the living dining room e, the hallway 6 and the like to the room of the toilet room 5 through the air flow path 60 that connects the air intake hole 51 and the air supply hole 32, the toilet room Efficient ventilation of 5 Obtain.

つまり、従来は、トイレ室５の出入口のドアの下部に換気のための空気流通口（アンダーカット）を設けていたので、ドアが閉められた場合でも、当該空気流通口を経由してトイレ室５の室内で発生した音が空気流通口を経由して廊下に伝播してしまったが、最良の形態１によれば、遮断手段４５を備えたので、トイレ室５の室内で発生した音のドアを経由した廊下６への透過量を少なくできるとともに、排気装置３１Ａと空気流通経路６０とを備えたので、トイレ室５の室内の換気を効率的に行えるという効果が得られる。   That is, conventionally, since an air circulation port (undercut) for ventilation is provided at the lower part of the door of the entrance / exit of the toilet room 5, even when the door is closed, the toilet room passes through the air circulation port. The sound generated in the room 5 has propagated to the corridor via the air circulation port. However, according to the best mode 1, since the blocking means 45 is provided, the sound generated in the room of the toilet room 5 is The amount of permeation to the corridor 6 via the door can be reduced, and the exhaust device 31A and the air circulation path 60 are provided, so that the effect of efficiently ventilating the toilet room 5 can be obtained.

そして、遮音ダクト２００がトイレ室５の室内に設置されたので、トイレ室５の室内で発生した音が遮音経路２０４の吸音材２０７により減衰するため、トイレ室５の室内で発生した音の廊下６への透過量をさらに少なくできる。   Since the sound insulation duct 200 is installed in the toilet room 5, the sound generated in the toilet room 5 is attenuated by the sound absorbing material 207 in the sound insulation path 204, so that the sound corridor generated in the room of the toilet room 5 is attenuated. 6 can be further reduced.

また、遮音ダクト２００の遮音経路２０４は、床１側と天井４側との間を往復する往復路２０８により形成されたので、遮音経路２０４の長さ寸法を筐体２０１の高さ寸法より長く形成でき、遮音経路２０４の長さを長くできるので、音の減衰効果を向上できる。   Further, since the sound insulation path 204 of the sound insulation duct 200 is formed by a reciprocating path 208 that reciprocates between the floor 1 side and the ceiling 4 side, the length dimension of the sound insulation path 204 is longer than the height dimension of the housing 201. Since it can be formed and the length of the sound insulation path 204 can be increased, the sound attenuation effect can be improved.

空気取込孔５１は、特定の部屋以外の建物内部の１つ以上の区画領域から床下空間３５に通じるように設ければよい。例えば、床下空間３５と特定の部屋以外の建物内部の居住空間としての廊下６とに跨って貫通する空気取込孔５１のみを設けるようにしてもよい。
尚、図１、及び、後述の図４、図５、図６に示す矢印は、空気の流れを示す。 What is necessary is just to provide the air intake hole 51 so that it may lead to the underfloor space 35 from one or more division area | regions inside buildings other than a specific room. For example, you may make it provide only the air intake hole 51 penetrated ranging over the underfloor space 35 and the corridor 6 as a living space inside buildings other than a specific room.
In addition, the arrow shown in FIG. 1, FIG. 4, FIG. 5, and FIG. 6 mentioned later shows the flow of air.

最良の形態２
図４に示す遮音ダクト２００（給気側の遮音ダクト）を用いてもよい。この遮音ダクト２００は、遮音ダクト２００を形成する筐体２０１の内壁２０２と内部仕切板２０３とによって形成された遮音経路２０４を備える。遮音経路２０４は、上下方向に沿った床１側と天井４側との間において上下の延長する蛇行路２０９により形成される。遮音経路２０４の一端側には一端側開放口２０５を備え、遮音経路２０４の他端側には他端側開放口２０６を備える。遮音経路２０４の一端側開放口２０５と空気供給孔３２とが繋がれる。遮音経路２０４の他端側開放口２０６はトイレ室５の室内に開放される。つまり、遮音経路２０４が床下空間３５とトイレ室５の室内とに繋がっており、空気が床下空間３５とトイレ室５の室内との間で遮音経路２０４を経由して移動可能（給気可能）である。内壁２０２の表面と内部仕切板２０３の表面とには、グラスウールやロックウールのような吸音材２０７が設けられる。よって、遮音経路２０４を経由する音は吸音材１０７により減衰する。
最良の形態２では、最良の形態１と同様の効果が得られる。尚、最良の形態２では、遮音経路２０４が床１側と天井４側との間において上下方向に延長する蛇行路２０９により形成されたので、遮音経路２０４の長さ寸法を筐体２０１の高さ寸法より長く形成でき、遮音経路２０４の長さを長くできるので、音の減衰効果を向上できる。 Best form 2
A sound insulation duct 200 (a sound insulation duct on the air supply side) shown in FIG. 4 may be used. The sound insulation duct 200 includes a sound insulation path 204 formed by the inner wall 202 of the housing 201 and the internal partition plate 203 that form the sound insulation duct 200. The sound insulation path 204 is formed by a meandering path 209 extending vertically between the floor 1 side and the ceiling 4 side along the vertical direction. One end side of the sound insulation path 204 is provided with an open end 205 on one end, and the other end side of the sound insulation path 204 is provided with an open end 206 on the other end side. One end side opening 205 of the sound insulation path 204 and the air supply hole 32 are connected. The other end side opening 206 of the sound insulation path 204 is opened into the toilet room 5. That is, the sound insulation path 204 is connected to the underfloor space 35 and the interior of the toilet room 5, and air can move between the underfloor space 35 and the interior of the toilet room 5 via the sound insulation path 204 (air supply is possible). It is. A sound absorbing material 207 such as glass wool or rock wool is provided on the surface of the inner wall 202 and the surface of the inner partition plate 203. Therefore, the sound passing through the sound insulation path 204 is attenuated by the sound absorbing material 107.
In the best mode 2, the same effect as in the best mode 1 can be obtained. In the best mode 2, since the sound insulation path 204 is formed by the meandering path 209 extending in the vertical direction between the floor 1 side and the ceiling 4 side, the length of the sound insulation path 204 is set to the height of the casing 201. Since the length of the sound insulation path 204 can be increased, the sound attenuation effect can be improved.

最良の形態３
図５に示すように、最良の形態１の遮音ダクト２００の１つを排気路として用いてもよい。即ち、最良の形態１の遮音ダクト２００の１つを上下逆にして設置することによって排気側の遮音ダクト２００Ａを形成し、残りの１つはそのまま給気側の遮音ダクト２００として使用する。天井仕上げボード１６には排気孔２１１を形成して排気孔２１１と排気側の遮音ダクト２００Ａの遮音経路２０４の一端側開放口２０５とを繋ぐ。排気装置３１Ａは、排気側の遮音ダクト２００Ａの遮音経路２０４又は排気孔２１１に設けられる。排気装置３１Ａは、トイレ室５の室内の空気を遮音経路２０４、排気孔２１１経由でトイレ室５の外に排出する。排気装置３１Ａによってトイレ室５より排出された空気は、天井裏空間３３を経由して戸外に通じる図外の排気孔より戸外に排出される。
最良の形態３によれば、最良の形態１と同様の効果が得られる。尚、最良の形態３では、トイレ室５の室内で発生した音が天井裏空間３３を通してトイレ室５以外の戸内や図外の排気孔から戸外に伝わるが、排気側の遮音ダクト２００Ａ内の遮音経路２０４内に入った音が遮音経路２０４内の吸音材２０７で吸音されるので、トイレ室５以外の戸内や戸外に音が伝わりにくくなるという効果が得られる。 Best form 3
As shown in FIG. 5, one of the sound insulation ducts 200 of the best mode 1 may be used as an exhaust path. That is, one of the sound insulation ducts 200 of the best mode 1 is installed upside down to form the sound insulation duct 200A on the exhaust side, and the other one is used as it is as the sound insulation duct 200 on the air supply side. An exhaust hole 211 is formed in the ceiling finishing board 16 to connect the exhaust hole 211 and one end side opening 205 of the sound insulation path 204 of the sound insulation duct 200A on the exhaust side. The exhaust device 31A is provided in the sound insulation path 204 or the exhaust hole 211 of the sound insulation duct 200A on the exhaust side. The exhaust device 31 </ b> A exhausts the air in the toilet room 5 out of the toilet room 5 through the sound insulation path 204 and the exhaust hole 211. The air discharged from the toilet room 5 by the exhaust device 31 </ b> A is discharged outside through an unillustrated exhaust hole communicating with the outside through the ceiling back space 33.
According to the best mode 3, the same effect as the best mode 1 can be obtained. In the best mode 3, sound generated in the room of the toilet room 5 is transmitted through the ceiling back space 33 to the outside of the door other than the toilet room 5 and from the exhaust hole outside the figure. Since the sound that has entered the sound insulation path 204 is absorbed by the sound absorbing material 207 in the sound insulation path 204, it is possible to obtain an effect that it is difficult for the sound to be transmitted outside or outside the toilet room 5.

最良の形態４
図６に示すように、最良の形態２の遮音ダクト２００の１つを排気路として用いてもよい。即ち、最良の形態２の遮音ダクト２００の１つを上下逆にして設置することによって排気側遮音ダクト２００Ａを形成し、残りの１つはそのまま給気側の遮音ダクト２００として使用する。天井仕上げボード１６には排気孔２１１を形成して排気孔２１１と排気側の遮音ダクト２００Ａの遮音経路２０４の一端側開放口２０５とを繋ぐ。排気装置３１Ａは、排気側の遮音ダクト２００Ａの遮音経路２０４又は排気孔２１１に設けられる。排気装置３１Ａは、トイレ室５の室内の空気を遮音経路２０４、排気孔２１１経由でトイレ室５の外に排出する。排気装置３１Ａによってトイレ室５より排出された空気は、天井裏空間３３を経由して戸外に通じる図外の排気孔より戸外に排出される。
最良の形態４によれば、最良の形態３と同様の効果が得られる。 Best form 4
As shown in FIG. 6, one of the sound insulation ducts 200 according to the best mode 2 may be used as an exhaust path. That is, one of the sound insulation ducts 200 according to the best mode 2 is installed upside down to form the exhaust side sound insulation duct 200A, and the other one is used as the air supply side sound insulation duct 200 as it is. An exhaust hole 211 is formed in the ceiling finishing board 16 to connect the exhaust hole 211 and one end side opening 205 of the sound insulation path 204 of the sound insulation duct 200A on the exhaust side. The exhaust device 31A is provided in the sound insulation path 204 or the exhaust hole 211 of the sound insulation duct 200A on the exhaust side. The exhaust device 31 </ b> A exhausts the air in the toilet room 5 out of the toilet room 5 through the sound insulation path 204 and the exhaust hole 211. The air discharged from the toilet room 5 by the exhaust device 31 </ b> A is discharged outside through an unillustrated exhaust hole communicating with the outside through the ceiling back space 33.
According to Best Mode 4, the same effect as Best Mode 3 can be obtained.

最良の形態５
床板１３にドリルで貫通孔をあけることにより空気取込孔５１や空気供給孔３２を形成してもよい。この場合、床１を施工した後において床板１３にドリルで孔をあけることにより空気取込孔５１や空気供給孔３２を容易に形成できるので、施工が容易となる。また、空気取込孔５１や空気供給孔３２の形成場所を自由に決めることができる。 Best form 5
The air intake holes 51 and the air supply holes 32 may be formed by drilling through holes in the floor plate 13. In this case, since the air intake hole 51 and the air supply hole 32 can be easily formed by drilling a hole in the floor board 13 after the floor 1 is constructed, the construction is facilitated. Moreover, the formation place of the air intake hole 51 and the air supply hole 32 can be determined freely.

最良の形態６
間仕切り壁を施工した後に床を施工する場合には、図７に示すように、床下空間１３に位置する間仕切り壁２２の下部に貫通孔６１を形成することによって、空気取込孔５１と空気供給孔３２とを繋ぐ空気流通経路６０を形成すればよい。この場合、床板１３の端面１３Ａと間仕切り壁２２との間を離した隙間Ｓにより、間仕切り壁２２側にも間仕切り壁２２に沿った空気取込孔５１及び空気供給孔３２を形成する。 Best form 6
When the floor is constructed after the partition wall is constructed, the air intake hole 51 and the air supply are formed by forming a through hole 61 in the lower part of the partition wall 22 located in the underfloor space 13 as shown in FIG. What is necessary is just to form the air distribution path 60 which connects the hole 32. FIG. In this case, the air intake hole 51 and the air supply hole 32 along the partition wall 22 are also formed on the partition wall 22 side by the gap S separating the end surface 13A of the floor plate 13 and the partition wall 22.

最良の形態７
図８に示すように、壁際の床板１３を支持する際根太６２と呼ばれる根太を用いた場合には、空気取込孔５１及び空気供給孔３２は、際根太６２の位置する部分を避けて床板１３に形成した貫通孔により形成すればよい。そして、遮音ダクト２００の遮音経路２０４の一端側開放口２０５と空気供給孔３２とを繋げばよい。 Best form 7
As shown in FIG. 8, when a joist called joist 62 is used to support the floor board 13 at the wall, the air intake hole 51 and the air supply hole 32 avoid the portion where the joist 62 is located, and the floor board What is necessary is just to form by the through-hole formed in 13. FIG. Then, the one end opening 205 of the sound insulation path 204 of the sound insulation duct 200 and the air supply hole 32 may be connected.

最良の形態８
図９及び図１０に示すような遮音構成部１００を備えた遮音ダクト２００や２００Ａを設置してもよい。即ち、遮音構成部１００の一端開放口９５と空気供給孔３２、あるいは、遮音構成部１００の一端側開放口９５と排気２１１とを互いに繋ぎ、遮音構成部１００の他端側開放口９６をトイレ室５の室内に開放することによって、トイレ室５の室内と空気供給孔３２、あるいは、トイレ室５の室内と排気孔２１１とを繋ぐ遮音経路を形成する。尚、遮音ダクト２００や２００Ａは、例えば図外の取付具によりトイレ室５の床板１３あるいは天井板１６に取り付けられる。 Best form 8
You may install the sound insulation duct 200 and 200A provided with the sound insulation structure part 100 as shown in FIG.9 and FIG.10. That is, the one end opening 95 and the air supply hole 32 of the sound insulation component 100 or the one end opening 95 and the exhaust 211 of the sound insulation component 100 are connected to each other, and the other opening 96 of the sound insulation component 100 is connected to the toilet. By opening to the room 5, a sound insulation path is formed that connects the room of the toilet room 5 and the air supply hole 32, or the room of the bathroom 5 and the exhaust hole 211. The sound insulation ducts 200 and 200A are attached to the floor board 13 or the ceiling board 16 of the toilet room 5 by, for example, an attachment not shown.

遮音構成部１００は、内筒体１０２、外筒体１０３、塞体１０４を備える。内筒体１０２、外筒体１０３、塞体１０４は、板厚０．５ｍｍ〜１．６ｍｍ程度の金属板により形成される。   The sound insulation component 100 includes an inner cylinder 102, an outer cylinder 103, and a closing body 104. The inner cylindrical body 102, the outer cylindrical body 103, and the closing body 104 are formed of a metal plate having a thickness of about 0.5 mm to 1.6 mm.

内筒体１０２は、筒の中心軸に沿った方向の一端としての前端と筒の中心軸に沿った方向の他端としての後端、すなわち、筒の前後の両端が開放された断面真円形状の円筒により形成される。   The inner cylinder 102 has a front end as one end in the direction along the central axis of the cylinder and a rear end as the other end in the direction along the central axis of the cylinder, that is, a circular cross section in which both front and rear ends of the cylinder are open. It is formed by a cylindrical shape.

外筒体１０３は、筒の前後の両端が開放され、筒の中心軸に沿った方向と直交する第１直交方向としての左右の方向に扁平な断面横長扁平形状の筒により形成される。即ち、外筒体１０３は、上下の平壁部１０６；１０７と左右の側壁部１０８；１０９とにより形成される。上下の平壁部１０６；１０７は、筒の前後の方向と左右の方向とに沿って延長し、かつ、筒の中心軸及び第１直交方向と直交する第２直交方向としての筒の上下の方向で互いに平行に相対峙する平板により形成される。左右の側壁部１０８；１０９は、断面真円形状の円筒を円筒の中心軸に沿って切断した断面半円弧形状の前後に長い長尺板により形成される。上下の平壁部１０６；１０７の左端部同士が左の側壁部１０８によって互いに繋がれ、上下の平壁部１０６；１０７の右端部同士が右の側壁部１０９によって互いに繋がれたことによって、外筒体１０３が形成される。   The outer cylinder 103 is formed of a cylinder having a horizontally long cross-section that is flat in the left-right direction as a first orthogonal direction that is open at both ends of the cylinder and is orthogonal to the direction along the center axis of the cylinder. That is, the outer cylinder 103 is formed by the upper and lower flat wall portions 106; 107 and the left and right side wall portions 108; 109. The upper and lower flat wall portions 106; 107 extend along the front-rear direction and the left-right direction of the cylinder, and are arranged at the upper and lower sides of the cylinder as a second orthogonal direction orthogonal to the central axis of the cylinder and the first orthogonal direction. It is formed by flat plates facing each other in parallel in the direction. The left and right side wall portions 108 and 109 are formed by long plates that are long before and after a semicircular arc shape of a cross-sectionally circular cylinder cut along a central axis of the cylinder. The left end portions of the upper and lower flat wall portions 106; 107 are connected to each other by the left side wall portion 108, and the right end portions of the upper and lower flat wall portions 106; 107 are connected to each other by the right side wall portion 109. A cylindrical body 103 is formed.

外筒体１０３は、筒の左右の方向の長さ（以下、左右の長さという）Ｗが筒の上下の方向の長さ（以下、上下の長さという）Ｈより長く形成される。左右の長さＷは外筒体１０３の左右の端部外面間の長さ、上下の長さＨは外筒体１０３の上下の端部外面間の最短部分の長さである。即ち、外筒体１０３は、筒の中心軸と直交する第１直交方向の長さが筒の中心軸及び第１直交方向と直交する第２直交方向の長さより長く形成される。内筒体１０２の前後の長さは外筒体１０３の前後の長さより長く、内筒体１０２の前後の両端部が外筒体１０３の前後の両端より前後に突出する。内筒体１０２が外筒体１０３の内側に設けられて、内筒体１０２と外筒体１０３とが互いに同軸に配置され、内筒体１０２の前後の端部を外筒体１０３の前後の端部より前後に同じ長さだけ突出させた状態において、内筒体１０２の筒の外周面の上端と外筒体１０３の上の平壁部１０６の内面における左右間の中央とが筒の前端から後端にかけて互いに接続され、内筒体１０２の筒の外周面の下端と外筒体１０３の下の平壁部１０７の内面における左右間の中央とが筒の前端から後端に渡って互いに接続される。内筒体１０２と外筒体１０３とを接続する上下の接続部１１０；１１０は、内筒体１０２の外周面において互いに１８０度隔てた位置に形成される。この上下の接続部１１０；１１０を境として内筒体１０２の左右両側に、接続部１１０；１１０によって区切られた空気層１１１；１１１が形成される。   The outer cylindrical body 103 is formed such that the length in the left-right direction of the cylinder (hereinafter referred to as the left-right length) W is longer than the length H in the vertical direction of the cylinder (hereinafter referred to as the vertical length) H. The left and right length W is the length between the left and right end outer surfaces of the outer cylindrical body 103, and the upper and lower length H is the length of the shortest portion between the upper and lower end outer surfaces of the outer cylindrical body 103. That is, the outer cylinder 103 is formed such that the length in the first orthogonal direction orthogonal to the central axis of the cylinder is longer than the length in the second orthogonal direction orthogonal to the central axis of the cylinder and the first orthogonal direction. The front and rear lengths of the inner cylindrical body 102 are longer than the front and rear lengths of the outer cylindrical body 103, and both front and rear end portions of the inner cylindrical body 102 protrude front and rear from both front and rear ends of the outer cylindrical body 103. The inner cylinder 102 is provided inside the outer cylinder 103, the inner cylinder 102 and the outer cylinder 103 are arranged coaxially with each other, and the front and rear ends of the inner cylinder 102 are connected to the front and rear of the outer cylinder 103. The front end of the cylinder is defined by the upper end of the outer peripheral surface of the cylinder of the inner cylinder 102 and the center between the left and right sides of the inner surface of the flat wall 106 on the outer cylinder 103 in a state where the same length is projected forward and backward from the end. To the rear end, the lower end of the outer peripheral surface of the cylinder of the inner cylinder 102 and the center between the left and right of the inner surface of the flat wall portion 107 below the outer cylinder 103 are mutually connected across the front end to the rear end of the cylinder Connected. The upper and lower connecting portions 110; 110 that connect the inner cylinder 102 and the outer cylinder 103 are formed at positions 180 degrees apart from each other on the outer peripheral surface of the inner cylinder 102. Air layers 111; 111 delimited by the connecting portions 110; 110 are formed on the left and right sides of the inner cylindrical body 102 with the upper and lower connecting portions 110; 110 as a boundary.

即ち、外筒体１０３と内筒体１０２とが同軸に配置され、内筒体１０２の筒外面と外筒体１０３の筒内面とが筒の前後に渡って互いに接続され、この接続部１１０を境として内筒体１０２の筒の左右の両側に接続部１１０によって区切られた空気層１１１が形成されたことによって、内筒体１０２の外面と外筒体１０３の内面との間の左右の方向の長さを長くでき、空気層１１１の容積を大きくでき、空気層１１１と接する外筒体１０３の内面の面積を大きくできるので、音が内筒体１０２の内部から後述する孔１１８を経由して空気層１１１へと通過する際に音の通過する通路の断面積が急変することから音エネルギーが熱エネルギーに変換されることによって音圧が低下するとともに、さらに、音の低周波成分が外筒体１０３の内面と衝突することによって減衰する量が多くなるので、音の低周波成分の減衰効果が向上する。さらに、筒の左右の方向に沿って延長して上下で互いに平行に相対峙する一対の平板により形成された平壁部１０６；１０７を備えて、左右の方向に扁平な形状で上下の長さの短い外筒体１０３を備えたので、トイレ室５に設置してもトイレ室５外に突出することなく、設置しやすい遮音構成部１００を得ることができる。尚、上述の接続とは、内筒体１０２の筒外面と外筒体１０３の筒内面とが互いに接触しているが結合されていない状態、あるいは、内筒体１０２の筒外面と外筒体１０３の筒内面とが接着剤や係合などによって互いに結合された状態をいう。   That is, the outer cylinder 103 and the inner cylinder 102 are coaxially arranged, and the outer surface of the inner cylinder 102 and the inner surface of the outer cylinder 103 are connected to each other over the front and rear of the cylinder. Left and right directions between the outer surface of the inner cylinder body 102 and the inner surface of the outer cylinder body 103 by forming the air layers 111 separated by the connecting portions 110 on both the left and right sides of the cylinder of the inner cylinder body 102 as a boundary. Can be increased, the volume of the air layer 111 can be increased, and the area of the inner surface of the outer cylinder 103 in contact with the air layer 111 can be increased, so that sound can pass from the inside of the inner cylinder 102 through a hole 118 described later. When the sound passes through the air layer 111, the cross-sectional area of the passage through which the sound passes changes suddenly, so that the sound pressure is reduced by converting the sound energy into heat energy, and the low frequency component of the sound is further reduced. The inner surface of the cylinder 103 Since many amount of attenuation, the damping effect of the low frequency components of the sound is improved by. Furthermore, it is provided with a flat wall portion 106; 107 formed by a pair of flat plates extending in the left-right direction of the cylinder and facing each other in parallel up and down, and has a flat shape in the left-right direction and a vertical length. Therefore, the sound insulation component 100 that is easy to install can be obtained without protruding outside the toilet room 5 even when installed in the toilet room 5. The above-mentioned connection is a state where the outer surface of the inner cylindrical body 102 and the inner surface of the outer cylindrical body 103 are in contact with each other but not connected, or the outer surface of the inner cylindrical body 102 and the outer cylindrical body A state in which the inner surface of the cylinder 103 is coupled to each other by an adhesive, engagement, or the like.

蓋体１０４は前蓋１１２と後蓋１１３とを有する。前蓋１１２は内筒体１０２の前端と外筒体１０３の前端とを繋いで外筒体１０３の前端と内筒体１０２の前端との間を密閉状態に塞ぐ。後蓋１１３は内筒体１０２の後端と外筒体１０３の後端とを繋いで外筒体１０３の後端と内筒体１０２の後端との間を密閉状態に塞ぐ。この蓋体１０４と外筒体１０３と内筒体１０２とで囲まれた空間により空気層１１１が形成される。   The lid 104 has a front lid 112 and a rear lid 113. The front lid 112 connects the front end of the inner cylinder body 102 and the front end of the outer cylinder body 103 to block the space between the front end of the outer cylinder body 103 and the front end of the inner cylinder body 102 in a sealed state. The rear cover 113 connects the rear end of the inner cylindrical body 102 and the rear end of the outer cylindrical body 103 to seal the space between the rear end of the outer cylindrical body 103 and the rear end of the inner cylindrical body 102 in a sealed state. An air layer 111 is formed by a space surrounded by the lid body 104, the outer cylinder body 103, and the inner cylinder body 102.

図１０に示すように、内筒体１０２は、筒の前端部に前側有孔筒部１１５を備え、筒の後端部に後側有孔筒部１１６を備え、前側有孔筒部１１５と後側有孔筒部１１６との間の筒部が無孔筒部１１７に形成される。内筒体１０２の後側有孔筒部１１６の外周側には吸音材部１２０を備える。
前側有孔筒部１１５および後側有孔筒部１１６は、内筒体１０２の筒壁に内筒体１０２の内部と空気層１１１とに跨って貫通する複数の孔１１８が形成された構成である。例えば、内筒体１０２の前側有孔筒部１１５と後側有孔筒部１１６とがパンチング鉄板により形成される。 As shown in FIG. 10, the inner cylindrical body 102 includes a front perforated cylindrical portion 115 at the front end portion of the cylinder, a rear perforated cylindrical portion 116 at the rear end portion of the cylinder, A cylindrical portion between the rear perforated cylindrical portion 116 is formed in the non-perforated cylindrical portion 117. A sound absorbing material portion 120 is provided on the outer peripheral side of the rear perforated cylindrical portion 116 of the inner cylindrical body 102.
The front perforated cylindrical portion 115 and the rear perforated cylindrical portion 116 are configured such that a plurality of holes 118 penetrating the inner cylindrical body 102 and the air layer 111 are formed in the cylindrical wall of the inner cylindrical body 102. is there. For example, the front perforated cylindrical portion 115 and the rear perforated cylindrical portion 116 of the inner cylindrical body 102 are formed of a punching iron plate.

吸音材部１２０は、吸音材収納部１２１と吸音材収納部１２１に収納された吸音材１２２とにより構成される。吸音材収納部１２１は、内筒体１０２と外筒体１０３と左右の外囲板１２３；１２４と左右の前閉塞板１２５；１２６と後蓋１１３とによって密閉されることによって、空気層１１１と遮断された空間により形成される。左右の外囲板１２３；１２４は、内筒体１０２の径より大径の筒の一部をなす断面弧状の前後に長い長尺板により形成される。左右の外囲板１２３；１２４は、内筒体１０２の左右の半円弧状の筒壁部の左右の外側に内筒体１０２と同軸状に配置され、その上端と外筒体１０３の上の平壁部１０６とが互いに接続され、その下端と外筒体１０３の下の平壁部１０７とが互いに接続される。左の前閉塞板１２５が、左の外囲板１２３の前端と内筒体１０２の外周面と外筒体１０３の内周面との間を密閉状態に塞ぐ。右の前閉塞板１２６が、右の外囲板１２４の前端と内筒体１０２の外周面と外筒体１０３の内周面との間を密閉状態に塞ぐ。左の外囲板１２３の後端及び右の外囲板１２４の前端と後蓋１１３とが密閉状態に互いに接続される。吸音材収納部１２１内には、連続気泡を備えたグラスウールやガラス繊維フェルトや不織布などのような吸音材１２２が収納される。   The sound absorbing material unit 120 includes a sound absorbing material storage unit 121 and a sound absorbing material 122 stored in the sound absorbing material storage unit 121. The sound absorbing material storage unit 121 is sealed by the inner cylinder 102, the outer cylinder 103, the left and right outer surrounding plates 123; 124, the left and right front closing plates 125; 126, and the rear lid 113, thereby It is formed by a blocked space. The left and right outer surrounding plates 123; 124 are formed by long plates that are long in the front and rear of a cross-sectional arc shape that forms a part of a cylinder having a diameter larger than the diameter of the inner cylindrical body 102. The left and right outer envelope plates 123; 124 are arranged coaxially with the inner cylinder body 102 on the left and right outer sides of the left and right semicircular arc-shaped cylindrical wall portions of the inner cylinder body 102, and are arranged on the upper end and the outer cylinder body 103. The flat wall portion 106 is connected to each other, and the lower end thereof and the flat wall portion 107 under the outer cylinder 103 are connected to each other. The left front closing plate 125 seals a space between the front end of the left outer surrounding plate 123, the outer peripheral surface of the inner cylindrical body 102, and the inner peripheral surface of the outer cylindrical body 103. The right front blocking plate 126 seals a space between the front end of the right outer plate 124, the outer peripheral surface of the inner cylindrical body 102, and the inner peripheral surface of the outer cylindrical body 103. The rear end of the left outer envelope 123 and the front end of the right outer envelope 124 and the rear lid 113 are connected to each other in a sealed state. A sound absorbing material 122 such as glass wool, glass fiber felt, or nonwoven fabric having open cells is stored in the sound absorbing material storage portion 121.

音は、前側有孔筒部１１５を経由して内筒体１０２の内側と空気層１１１の内側とに行き来するとともに後側有孔筒部１１６を経由して内筒体１０２の内側と吸音材部１２０の内側とに行き来する。上記前側有孔筒部１１５の複数の孔１１８を経由して空間層１１１に入り込んだ音の低周波成分が空間層１１１により減衰し、後側有孔筒部１１６の複数の孔１１８を経由して吸音材部１２０内に入り込んだ音の高周波成分が吸音材１２２により吸収されることによって減衰する。   Sound travels between the inside of the inner cylindrical body 102 and the inside of the air layer 111 via the front perforated cylindrical portion 115 and the inside of the inner cylindrical body 102 and the sound absorbing material via the rear perforated cylindrical portion 116. Go back and forth inside part 120. The low frequency component of the sound that has entered the space layer 111 via the plurality of holes 118 of the front perforated tube portion 115 is attenuated by the space layer 111 and passes through the plurality of holes 118 of the rear perforated tube portion 116. Then, the high frequency component of the sound that has entered the sound absorbing material portion 120 is attenuated by being absorbed by the sound absorbing material 122.

尚、遮音構成部１００は、例えば、外筒体１０３の前後の長さが５００ｍｍ、内筒体１０２の前後の長さが６２０ｍｍ、内筒体１０２外径が１５０ｍｍ、外筒体１０３の上下の平壁部１０６：１０７の内面間の長さ（最短距離寸法）が１５０ｍｍ、外筒体１０３の左右の長さＷが３６０ｍｍあるいは５００ｍｍ、前側有孔筒部１１５の前後の長さが１００ｍｍ、吸音材部１２０及び後側有孔筒部１１６の前後長さが２００ｍｍ、吸音材部１２０の左端部と右端部との間の長さが２５０ｍｍ、無孔筒部１１７の前後の長さが２００ｍｍである。前側有孔筒部１１５、後側有孔筒部１１６は、例えば、パンチング鉄板により形成し、複数の孔１８の開口率は５８％とした。   The sound insulation component 100 has, for example, a front and rear length of the outer cylinder 103 of 500 mm, a front and rear length of the inner cylinder 102 of 620 mm, an outer diameter of the inner cylinder 102 of 150 mm, and an upper and lower length of the outer cylinder 103. The length between the inner surfaces of the flat wall portions 106: 107 (shortest distance dimension) is 150 mm, the left and right length W of the outer cylindrical body 103 is 360 mm or 500 mm, the length of the front perforated cylindrical portion 115 is 100 mm, and the sound absorption The front and rear lengths of the material part 120 and the rear perforated cylindrical part 116 are 200 mm, the length between the left end part and the right end part of the sound absorbing material part 120 is 250 mm, and the front and rear lengths of the non-porous cylindrical part 117 are 200 mm. is there. The front perforated cylindrical portion 115 and the rear perforated cylindrical portion 116 are formed of, for example, a punching iron plate, and the aperture ratio of the plurality of holes 18 is 58%.

最良の形態８によれば、遮音ダクト２００を空気供給孔３２や排気孔２１１に繋ぐことで、トイレ室５の室内で発生した音が遮音ダクト２００や２００Ａに入って遮音構成部１００で減衰するため、トイレ室５の室内で発生した音の廊下６への透過量をさらに少なくできる。   According to the best mode 8, by connecting the sound insulation duct 200 to the air supply hole 32 and the exhaust hole 211, the sound generated in the room of the toilet room 5 enters the sound insulation duct 200 or 200A and is attenuated by the sound insulation component 100. Therefore, the transmission amount of the sound generated in the toilet room 5 to the hallway 6 can be further reduced.

遮音構成部１００の作用をさらに詳細に説明する。トイレ室５の室内で発生した音が遮音構成部１００に進入すると、音が、前側有孔筒部１１５の貫通孔１１８を経由して空気層１１１に入ったり、後側有孔筒部１１６の貫通孔１１８を経由して吸音材収納部１２１に入る。音が内筒体１０２の内部から孔１１８を経由して空気層１１１へと通過する際に音の通過する通路の断面積が急変することから音エネルギーが熱エネルギーに変換されることによって音圧が低下するとともに、空気層１１１に入った音の低周波成分は、外筒体１０３の内面と内筒体１０２の外面とに衝突して減衰する。最良の形態８の遮音構成部１００では、外筒体１０３の左右の長さＷを長くすることによって、内筒体１０２の外面と外筒体１０３の内面との間の左右の方向の長さを長くでき、空気層１１１の容積を大きくできたので、音の通過する通路の断面積の変化がさらに大きくなることから音の低周波成分の減衰量を多くでき、さらに、空気層１１１と接する外筒体１０３の内面の面積を大きくできたので、外筒体３の内面と衝突する音の低周波成分が多くなり、音の低周波成分の減衰効果が向上する。また、吸音材収納部１２１内に入った音の高周波成分は吸音材１２２に吸音されることによって減衰する。   The operation of the sound insulation component 100 will be described in more detail. When the sound generated in the toilet room 5 enters the sound insulation component 100, the sound enters the air layer 111 through the through hole 118 of the front perforated tubular portion 115, or the sound of the rear perforated tubular portion 116. The sound absorbing material storage part 121 is entered via the through hole 118. When the sound passes from the inside of the inner cylinder 102 through the hole 118 to the air layer 111, the cross-sectional area of the passage through which the sound passes changes suddenly, so that the sound energy is converted into heat energy, so that the sound pressure is changed. The low frequency component of the sound that has entered the air layer 111 collides with the inner surface of the outer cylinder 103 and the outer surface of the inner cylinder 102 and is attenuated. In the sound insulation component 100 of the best mode 8, the left and right lengths between the outer surface of the inner cylinder 102 and the inner surface of the outer cylinder 103 are increased by increasing the left and right length W of the outer cylinder 103. Since the volume of the air layer 111 can be increased, the change in the cross-sectional area of the passage through which the sound passes is further increased, so that the attenuation amount of the low frequency component of the sound can be increased, and further, the air layer 111 is contacted. Since the area of the inner surface of the outer cylindrical body 103 can be increased, the low frequency component of the sound colliding with the inner surface of the outer cylindrical body 3 is increased, and the attenuation effect of the low frequency component of the sound is improved. Further, the high frequency component of the sound entering the sound absorbing material storage unit 121 is attenuated by being absorbed by the sound absorbing material 122.

従って、最良の形態８では、遮音構成部１００を備えたので、音の低周波成分が空気層１１１内で減衰するとともに音の高周波成分が吸音材収納部１２１内の吸音材１２２によって吸収されることによって減衰するので、トイレ室５の室内で発生した音を効果的に減衰でき、廊下６への透過量を少なくできる。
また、外筒体３の左右の長さＷを上下の長さＨより長くしたので、上述したように内筒体２の外面と外筒体３の内面との間の左右の方向の長さを長くでき、空気層１１１の容積を大きくでき、空気層１１１と接する外筒体３の内面の面積を大きくできるという、３つの要素を得ることができるので、遮音効果を向上できる。 Therefore, in the best mode 8, since the sound insulation component 100 is provided, the low frequency component of the sound is attenuated in the air layer 111 and the high frequency component of the sound is absorbed by the sound absorbing material 122 in the sound absorbing material storage unit 121. Therefore, sound generated in the toilet room 5 can be effectively attenuated, and the amount of permeation to the hallway 6 can be reduced.
Since the left and right length W of the outer cylinder 3 is longer than the upper and lower length H, the length in the left and right direction between the outer surface of the inner cylinder 2 and the inner surface of the outer cylinder 3 as described above. 3 can be obtained, and the volume of the air layer 111 can be increased, and the area of the inner surface of the outer cylindrical body 3 in contact with the air layer 111 can be increased. Therefore, the sound insulation effect can be improved.

最良の形態９
最良の形態８の遮音構成部１００に代えて、図１１に示すような遮音構成部１００を備えた遮音ダクト１０を用いてもよい。即ち、最良の形態１の遮音構成部１００の外筒体１０３の左右の側壁部１０８：１０９の内面に、吸音材としてのロックフェルト１５０を設けた構成の遮音構成部１００を用いる。
最良の形態９によれば、トイレ室５の室内から遮音ダクト１０の遮音構成部１００の空気層１１１内に入った音の高周波成分がロックフェルト１５０に吸音されて減衰するので、音の高周波成分をさらに効果的に減衰させることができる。 Best 9
Instead of the sound insulation component 100 of the best mode 8, a sound insulation duct 10 provided with the sound insulation component 100 as shown in FIG. 11 may be used. That is, the sound insulation component 100 having the structure in which the rock felt 150 as the sound absorbing material is provided on the inner surfaces of the left and right side wall portions 108: 109 of the outer cylinder 103 of the sound insulation component 100 of the best mode 1 is used.
According to the best mode 9, since the high frequency component of the sound that has entered the air layer 111 of the sound insulation component 100 of the sound insulation duct 10 from the room of the toilet room 5 is absorbed and attenuated by the rock felt 150, the high frequency component of the sound Can be attenuated more effectively.

最良の形態１０
図１２；１３に示すように、最良の形態９で説明した遮音構成部１００の内筒体１０２の代わりに、複数の孔１１８が円筒の筒壁の全域に渡って均等に形成された有孔筒体によって形成された内筒体１０２を備えた構成とした。
最良の形態１０によれば、トイレ室５の室内から内筒体１０２を形成する有孔筒体の孔１１８を経由して内筒体１０２の内側から空間層１１１に入り込んだ音の低周波成分が空間層１１１で減衰するとともに、空気層１１１内に入った音の高周波成分がロックフェルト１５０に吸音されることによって減衰するので、音の低周波成分及び高周波成分を効果的に減衰させることができる。 Best form 10
As shown in FIGS. 12 and 13, in place of the inner cylinder 102 of the sound insulation component 100 described in the best mode 9, a plurality of holes 118 are uniformly formed over the entire cylindrical wall. It was set as the structure provided with the inner cylinder 102 formed of the cylinder.
According to the best mode 10, the low frequency component of the sound that has entered the space layer 111 from the inside of the inner cylinder 102 through the hole 118 of the perforated cylinder forming the inner cylinder 102 from the toilet room 5. Is attenuated by the space layer 111, and the high frequency component of the sound that has entered the air layer 111 is attenuated by being absorbed by the rock felt 150, so that the low frequency component and high frequency component of the sound can be effectively attenuated. it can.

最良の形態１１
図１４；１５に示すように、最良の形態９で説明した内筒体１０２の代わりに、複合内筒体１０２Ｂを備えた構成とした。複合内筒体１０２Ｂは、前部内筒体１５５と後部内筒体１５６とにより形成される。前部内筒体１５５は、前後両端が開口し、前後の長さが外筒体１０３の前後の長さより短い断面真円形状の円筒により形成され、複数の孔１１８が円筒の筒壁の全域に渡って均等に形成された有孔筒体によって形成される。後部内筒体１５６は、前後両端が開放する筒体であり、前端開口縁１５７の左右方向の長さが前部内筒体１５５の後端開口縁１５８の左右の長さより長い扁平円形状に形成される。前部内筒体１５５と後部内筒体１５６とが軸中心を一致させた状態に配置され、前部内筒体１５５の後端開口縁１５８の上部と後部内筒体１５６の前端開口縁１５７の上部とが互いに接続され、前部内筒体１５５の後端開口縁１５８の下部と後部内筒体１５６の前端開口縁１５７の下部とが互いに接続されて複合内筒体１０２Ｂが形成される。複合内筒体１０２Ｂの上端と外筒体１０３の上の筒壁部１０６の内面における左右間の中央とが互いに接続され、複合内筒体１０２Ｂの下端と外筒体１０３の下の筒壁部１０７の内面における左右間の中央とが互いに接続される。以上によって、前部内筒体１５５の後端開口縁１５８と後部内筒体１５６の前端開口縁１５７との間には、後部内筒体１５６の内部と空気層１１１とに開通する空気流通部１５９が形成される。
最良の形態１１の遮音構成部１００では、トイレ室５から遮音構成部１００に入り込んだ音は複数の孔１１６を経由して空気層１１１に入り込み、また、床下空間３５から遮音構成部１００の内部に入り込んだ音は前部内筒体１５５の複数の孔１１６を経由して空気層１１１に入り込む。空気層１１１に入り込んだ音の低周波成分が空気層１１１により減衰されるとともに空気層１１１内に入った音の高周波成分がロックフェルト１５０に吸音されることによって減衰するので、音の低周波成分及び高周波成分を効果的に減衰させることができる。 Best form 11
As shown in FIGS. 14 and 15, instead of the inner cylindrical body 102 described in the best mode 9, a composite inner cylindrical body 102B is provided. The composite inner cylinder 102B is formed by a front inner cylinder 155 and a rear inner cylinder 156. The front inner cylinder 155 is formed by a cylinder having a perfect cross-sectional shape with openings at the front and rear ends and a front and rear length shorter than the front and rear lengths of the outer cylinder 103, and a plurality of holes 118 are formed in the entire cylindrical wall of the cylinder. It is formed by a perforated cylindrical body that is formed evenly across. The rear inner cylinder 156 is a cylinder whose front and rear ends are open, and is formed in a flat circular shape in which the length in the left-right direction of the front end opening edge 157 is longer than the left and right lengths of the rear end opening edge 158 in the front inner cylinder 155. Is done. The front inner cylinder 155 and the rear inner cylinder 156 are arranged in a state in which the axial centers coincide with each other, and the upper part of the rear end opening edge 158 of the front inner cylinder 155 and the upper part of the front end opening edge 157 of the rear inner cylinder 156 are arranged. Are connected to each other, and the lower part of the rear end opening edge 158 of the front inner cylinder 155 and the lower part of the front end opening edge 157 of the rear inner cylinder 156 are connected to each other to form the composite inner cylinder 102B. The upper end of the composite inner cylinder 102B and the center between the left and right sides of the inner surface of the cylinder wall 106 on the outer cylinder 103 are connected to each other, and the lower end of the composite inner cylinder 102B and the cylinder wall part below the outer cylinder 103 are connected. The center between the left and right sides of the inner surface of 107 is connected to each other. As described above, the air circulation portion 159 opened between the rear inner cylindrical body 156 and the air layer 111 between the rear end opening edge 158 of the front inner cylindrical body 155 and the front end opening edge 157 of the rear inner cylindrical body 156. Is formed.
In the sound insulation component 100 of the best mode 11, the sound that enters the sound insulation component 100 from the toilet room 5 enters the air layer 111 via the plurality of holes 116, and the interior of the sound insulation component 100 from the underfloor space 35. The sound that has entered enters the air layer 111 through the plurality of holes 116 of the front inner cylinder 155. Since the low frequency component of the sound that has entered the air layer 111 is attenuated by the air layer 111 and the high frequency component of the sound that has entered the air layer 111 is attenuated by being absorbed by the rock felt 150, the low frequency component of the sound In addition, high frequency components can be effectively attenuated.

最良の形態１２
図１２；１３で示した最良の形態１０の遮音構成部１００における内筒体１０２の外周面に図外の連続気泡シートを巻き付け、外筒体１０３の左右の筒壁部１０８；１０９の内面に吸音材としてのロックフェルト１５０を設けない構成とした。連続気泡シートは、連続気泡を備えた金属製の繊維積層板により形成される。金属製の繊維積層板は、アルミのくず、ステンレスのくずのような金属くずをプレスして板状に形成したものである。この繊維積層板では、狭い空間が板の厚さ方向に階段状に連続するような連続気泡が形成される。
このような連続気泡を備えた繊維積層板を内筒体１０２の外周面に巻き付けて構成した最良の形態１２の遮音構成部１００によれば、音の高周波成分が連続気泡を通過する場合に繊維積層板の基材（連続気泡シートのシート基材）に衝突することによって衝突部分が振動して音の高周波成分が減衰し、また、音圧によって繊維積層板及び内筒体１０２が板振動するので、音の低周波成分がこの板振動によって減衰する。さらに、音の低周波成分が、小さな空間である連続気泡から大きな空間である空気層１１１に入るので、効率的に減衰する。 Best form 12
12; 13, an open cell sheet (not shown) is wound around the outer peripheral surface of the inner cylinder 102 in the sound insulation component 100 of the best mode 10 shown in FIG. 13, and the inner surfaces of the left and right cylinder wall portions 108; 109 of the outer cylinder 103 are wound around. The rock felt 150 as a sound absorbing material is not provided. The open cell sheet is formed of a metal fiber laminate having open cells. The metal fiber laminate is formed by pressing metal scraps such as aluminum scraps and stainless scraps into a plate shape. In this fiber laminated board, open cells are formed such that a narrow space continues stepwise in the thickness direction of the board.
According to the sound insulation component 100 of the best mode 12 configured by winding the fiber laminate having such open cells around the outer peripheral surface of the inner cylindrical body 102, when the high frequency component of the sound passes through the open cells, the fiber By colliding with the base material of the laminated plate (sheet base material of the open cell sheet), the collision part vibrates and the high frequency component of the sound is attenuated, and the fiber laminated plate and the inner cylindrical body 102 vibrate due to the sound pressure. Therefore, the low frequency component of the sound is attenuated by this plate vibration. Furthermore, since the low frequency component of sound enters the air layer 111 which is a large space from an open bubble which is a small space, the sound is efficiently attenuated.

最良の形態１３
最良の形態１２の遮音構成部１００において外筒体１０３の左右の筒壁部１０８：１０９の内面に吸音材としてのロックフェルト１５０を設けた構成の遮音構成部１００とした。最良の形態６の遮音構成部１によれば、空気層１１１に入った音の高周波成分がロックフェルト５０により吸音されて減衰するので、最良の形態５の遮音構成部１００より高周波成分の減衰効果を高くできる。 Best form 13
In the sound insulation component 100 according to the best mode 12, the sound insulation component 100 is configured such that the rock felt 150 as the sound absorbing material is provided on the inner surfaces of the left and right tube wall portions 108: 109 of the outer cylinder 103. According to the sound insulation component 1 of the best mode 6, since the high frequency component of the sound entering the air layer 111 is absorbed and attenuated by the rock felt 50, the effect of damping the high frequency component than the sound insulation component 100 of the best mode 5 is achieved. Can be high.

例えば、ロックフェルト１５０は、外筒体１０３の前後端に渡って前後に延長して設け、厚さが２０ｍｍである。例えば、前部内筒体１５５の前後の長さが３５０ｍｍ、後部内筒体１５６の前後の長さが２００ｍｍである。例えば、前側有孔筒部１１５、後側有孔筒部１１６、内筒体１０２Ａ、前部内筒体１５５は、パンチング鉄板により形成し、複数の孔１１８の開口率は５８％とした。また、後述する実験に用いた最良の形態５；６の遮音構成部は、連続気泡シートとしてアルミ箔繊維積層板を内筒体１０２の外周面全体に巻き付けて形成した。   For example, the rock felt 150 is provided to extend in the front-rear direction across the front-rear end of the outer cylinder 103 and has a thickness of 20 mm. For example, the front and rear lengths of the front inner cylinder 155 are 350 mm, and the front and rear lengths of the rear inner cylinder 156 are 200 mm. For example, the front perforated cylindrical portion 115, the rear perforated cylindrical portion 116, the inner cylindrical body 102A, and the front inner cylindrical body 155 are formed of a punching iron plate, and the aperture ratio of the plurality of holes 118 is 58%. In addition, the sound insulation component of the best mode 5; 6 used in the experiment described later was formed by winding an aluminum foil fiber laminate as an open cell sheet around the entire outer peripheral surface of the inner cylinder 102.

最良の形態８乃至最良の形態１３による遮音構成部１００として、それぞれ、外筒体３の左右の長さＷが３６０ｍｍのものと５００ｍｍのものとを用意し、これら各遮音構成部１を用いた場合の音圧レベル減衰量（ｄＢ）を測定する実験を行った。
実験は、図１６に示す実験装置で実施した。即ち、試験体である遮音構成部１００の内筒体１０２の一端側開放口９５と内径１５０ｍｍの前円筒管１６１の後端開放口とが互いに繋がれ、遮音構成部１００の他端側開放口９６と内径１５０ｍｍの後円筒管１６２の前端開放口とが互いに繋がれ、前円筒管１６１の前部に音を取り込む音管１６３の一端が接続され、音管１６３の他端に音源スピーカ１６４が配置され、音源スピーカ１６４には雑音発生器１６５の発生する雑音が増幅器１６６で増幅されて入力される。前円筒管１６１の前端部には無反射端１６６が形成され、後円筒管１６２の後端部には無反射端１６７が形成される。無反射端１６６は、前円筒管１６１の内側において筒の前端から遮音構成部１００の位置する側に向けて、図外の密度９６ｋｇ／ｍ３で厚さ５０ｍｍのグラスウールを２枚、密度４８ｋｇ／ｍ３で厚さ５０ｍｍのグラスウールを２枚、密度２４ｋｇ／ｍ３で厚さ５０ｍｍのグラスウールを２枚、当該順番で積層して形成した。無反射端１６７も同様に形成した。音圧レベル減衰量（ｄＢ）の測定は、遮音構成部１の一端から前方に所定距離ａだけ離れた前円筒管１６１の内側にマイク６８を設置するとともに、遮音構成部１の後端から後方に所定距離ｂだけ離れた後円筒管１６２の内側にマイク１６９を設置し、マイク１６８；１６９で集めた音の音圧レベルをそれぞれ個別にサウンドレベルメータ（周波数分析機能付）１７０；１７１で測定し、遮音構成部１００の前側での音圧レベルと遮音構成部１００の後側での音圧レベルとの差、即ち、音圧レベル減衰量を求めた。所定距離ａと所定距離ｂとを同じ距離とし、所定距離ａ：ｂを遮音構成部１００から無反射端１６６；１６７に向けて０ｍｍの地点ｘから１０００ｍｍの地点ｙまでの間において１００ｍｍ間隔毎の地点であるそれぞれ１１箇所に設定し、遮音構成部１００の前後で遮音構成部１００から同じ距離にある対応する対の１１箇所でそれぞれ音圧レベル減衰量を測定し、その１１箇所での減衰量の平均値を測定結果とした。図１６の符号以外の数字は寸法を示し、単位はｍｍである。
尚、比較例Ｐとして、図１６の遮音構成部１００の部分に、管の内周面に厚さ２０ｍｍの吸音材を備えた長さ１０００ｍｍの円筒管を繋げた場合についても同様に測定した。当該円筒管は、管の径寸法が前円筒管１６１及び後円筒管１６２と同じ寸法に形成されるとともに、前後端部が前円筒管１６１及び後円筒管１６２に嵌り合う寸法に形成されたことによって、前後端部を前円筒管１６１及び後円筒管１６２に嵌め合わせて繋げた。
最良の形態８乃至最良の形態１３による遮音構成部１００及び比較例Ｐでの測定結果を図１７に示す。 As the sound insulation component 100 according to the best form 8 to the best form 13, those having a left and right length W of the outer cylindrical body 3 of 360 mm and 500 mm are prepared, and each of these sound insulation components 1 is used. An experiment was conducted to measure the sound pressure level attenuation (dB).
The experiment was conducted using the experimental apparatus shown in FIG. That is, the one end side opening 95 of the inner cylinder 102 of the sound insulation component 100 as a test body and the rear end opening of the front cylindrical tube 161 having an inner diameter of 150 mm are connected to each other, and the other end side opening of the sound insulation component 100 is connected. 96 and the front end opening of the rear cylindrical tube 162 having an inner diameter of 150 mm are connected to each other, one end of a sound tube 163 that takes in sound is connected to the front portion of the front cylindrical tube 161, and a sound source speaker 164 is connected to the other end of the sound tube 163. The noise generated by the noise generator 165 is amplified by the amplifier 166 and input to the sound source speaker 164. A non-reflective end 166 is formed at the front end of the front cylindrical tube 161, and a non-reflective end 167 is formed at the rear end of the rear cylindrical tube 162. The non-reflective end 166 has two glass wools having a density of 96 kg / m 3 and a thickness of 50 mm, not shown, and a density of 48 kg / cm from the front end of the cylinder toward the side where the sound insulation component 100 is located inside the front cylindrical tube 161. Two glass wools having a thickness of m 3 and a thickness of 50 mm and two glass wools having a density of 24 kg / m 3 and a thickness of 50 mm were laminated in that order. The non-reflective end 167 was formed in the same manner. The sound pressure level attenuation (dB) is measured by installing a microphone 68 inside the front cylindrical tube 161 that is a predetermined distance a forward from one end of the sound insulation component 1 and backward from the rear end of the sound insulation component 1. After a predetermined distance b, a microphone 169 is installed inside the cylindrical tube 162, and the sound pressure levels of the sounds collected by the microphones 168 and 169 are individually measured with a sound level meter (with frequency analysis function) 170 and 171. The difference between the sound pressure level on the front side of the sound insulation component 100 and the sound pressure level on the rear side of the sound insulation component 100, that is, the sound pressure level attenuation amount was obtained. The predetermined distance a and the predetermined distance b are set to be the same distance, and the predetermined distance a: b is set at every 100 mm interval from the point x of 0 mm to the point y of 1000 mm toward the non-reflection end 166; The sound pressure level attenuation is measured at 11 points of the corresponding pair at the same distance from the sound insulation component 100 before and after the sound insulation component 100, respectively. The average value was taken as the measurement result. Numbers other than the reference numerals in FIG. 16 indicate dimensions, and the unit is mm.
As Comparative Example P, the same measurement was performed when a cylindrical tube having a length of 1000 mm provided with a sound absorbing material having a thickness of 20 mm on the inner peripheral surface of the tube was connected to the portion of the sound insulation component 100 in FIG. The cylindrical tube is formed so that the diameter of the tube is the same as that of the front cylindrical tube 161 and the rear cylindrical tube 162 and the front and rear end portions thereof are fitted to the front cylindrical tube 161 and the rear cylindrical tube 162. Thus, the front and rear end portions were fitted and connected to the front cylindrical tube 161 and the rear cylindrical tube 162.
FIG. 17 shows the measurement results of the sound insulation component 100 according to the best mode 8 to the best mode 13 and the comparative example P.

最良の形態８乃至１３による遮音構成部１の遮音効果について図１７乃至図１９を参照し、説明する。尚、図１７の遮音構成部１００の形態の欄に示す左側の数値は最良の形態の番号、右側の（）内の数字は外筒体１０３の左右の長さＷを示す。図１８では、外筒体１０３の左右の長さＷ＝３６０ｍｍとした場合の最良の形態８乃至１３による遮音構成部１００の結果をまとめてグラフに示した。図１９では、外筒体１０３の左右の長さＷ＝５００ｍｍとした場合の最良の形態８乃至１３による遮音構成部１００の結果をまとめてグラフに示した。   The sound insulation effect of the sound insulation component 1 according to the best modes 8 to 13 will be described with reference to FIGS. 17 to 19. Note that the numerical value on the left side in the column of the configuration of the sound insulation component 100 in FIG. 17 indicates the number of the best mode, and the number in parentheses on the right side indicates the left and right length W of the outer cylinder 103. In FIG. 18, the result of the sound insulation structure part 100 by the best forms 8 thru | or 13 at the time of making the left-right length W = 360mm of the outer cylinder 103 was collectively shown on the graph. In FIG. 19, the result of the sound insulation structure part 100 by the best form 8 thru | or 13 at the time of making the left-right length W = 500mm of the outer cylinder 103 was collectively shown on the graph.

Ｗ＝３６０ｍｍの場合、最良の形態８：９で使用した遮音構成部１００の遮音効果が優れている。最良の形態１で使用した遮音構成部１００では、吸音材部１２０と空気層１１１とを備えているので、５００Ｈｚ帯域以上の高周波成分の音に対する音圧レベル減衰量及び５００Ｈｚ帯域以下の低周波成分の音に対する音圧レベル減衰量が優れている。最良の形態９で使用した遮音構成部１００では、さらにロックフェルト１５０を備えているために、５００Ｈｚ帯域以上の高周波成分の音に対する音圧レベル減衰量が優れている。
Ｗ＝５００ｍｍの場合、空気層１１１と接する外筒体１０３の内面の面積がＷ＝３６０ｍｍの場合と比べて大きいので、空気層１１１に入る音の低周波成分の減衰効果が向上している。
尚、Ｗ＝３６０ｍｍの場合において最良の形態１３の遮音構成部１００での１２５Ｈｚ帯域の減衰量は３．７ｄＢ、Ｗ＝５００ｍｍの場合において最良の形態８の遮音構成部１００での１２５Ｈｚ帯域の減衰量は３．５ｄＢであり、比較例Ｐより若干悪いが、計測上の誤差であり、工学的には性能は比較例Ｐとほぼ同じである。その他は、いずれも比較例Ｐよりも遮音効果が優れている。 In the case of W = 360 mm, the sound insulation effect of the sound insulation component 100 used in the best mode 8: 9 is excellent. Since the sound insulation component 100 used in the best mode 1 includes the sound absorbing material 120 and the air layer 111, the sound pressure level attenuation amount for the sound of the high frequency component of 500 Hz band or more and the low frequency component of 500 Hz band or less. The sound pressure level attenuation is excellent. Since the sound insulation component 100 used in the best mode 9 is further provided with the rock felt 150, the sound pressure level attenuation amount with respect to the sound of the high frequency component of 500 Hz band or more is excellent.
In the case of W = 500 mm, the area of the inner surface of the outer cylinder 103 in contact with the air layer 111 is larger than in the case of W = 360 mm, so that the attenuation effect of the low frequency component of the sound entering the air layer 111 is improved.
In the case of W = 360 mm, the attenuation of the 125 Hz band in the sound insulation component 100 of the best mode 13 is 3.7 dB, and in the case of W = 500 mm, the attenuation of the 125 Hz band in the sound insulation component 100 of the best mode 8 The amount is 3.5 dB, which is slightly worse than Comparative Example P, but is a measurement error, and the performance is almost the same as Comparative Example P in terms of engineering. Other than that, the sound insulation effect is superior to Comparative Example P.

最良の形態１４
図２０乃至図２２に示したような遮音構成部１００を備えた遮音ダクト１０を用いてもよい。図２０は内筒体１０２の左右の両側の空気層１１１の大きさを違わせた構成の遮音構成部１００である。図２１は内筒体１０２の左右のいずれか一方のみに空気層１１１を形成した構成の遮音構成部１００である。図２２は外筒体１０３の上下の長さＨを内筒体１０２の外径寸法より大きくして内筒体２の上下左右に連続する空気層１１１を形成した構成の遮音構成部１００である。以上のような構成の遮音構成部１００であっても、外筒体１０３の左右の長さＷを外筒体１０３の上下の長さＨより長くしたので、内筒体１０２の外面と外筒体１０３の内面との間の左右の方向の長さを長くでき、空気層１１１の容積を大きくでき、空気層１１１と接する外筒体１０３の内面の面積を大きくできるので、音の低周波成分の遮音効果を向上できるからである。 Best form 14
The sound insulation duct 10 including the sound insulation component 100 as shown in FIGS. 20 to 22 may be used. FIG. 20 shows a sound insulation component 100 having a configuration in which the sizes of the air layers 111 on the left and right sides of the inner cylinder 102 are made different. FIG. 21 shows a sound insulation component 100 in which an air layer 111 is formed only on either the left or right side of the inner cylinder 102. FIG. 22 shows a sound insulating component 100 having a configuration in which the upper and lower lengths H of the outer cylindrical body 103 are made larger than the outer diameter of the inner cylindrical body 102 to form an air layer 111 continuous in the vertical and horizontal directions of the inner cylindrical body 2. . Even in the sound insulation component 100 configured as described above, since the left and right length W of the outer cylinder 103 is longer than the upper and lower lengths H of the outer cylinder 103, the outer surface of the inner cylinder 102 and the outer cylinder Since the length in the left-right direction between the inner surface of the body 103 can be increased, the volume of the air layer 111 can be increased, and the area of the inner surface of the outer cylinder 103 in contact with the air layer 111 can be increased. This is because the sound insulation effect can be improved.

尚、最良の形態１乃至１４において、開口部４２を経由するトイレ室５の室内と廊下６との間の空気の流通経路が遮断手段４５により遮断された場合、トイレ室５に対する空気の流通は、空気供給孔３２と排気装置３１Ａの取付孔とを介して、あるいは、空気供給孔３２と排気孔１１１とを介してのみ可能である。   In the best modes 1 to 14, when the air flow path between the interior of the toilet room 5 via the opening 42 and the corridor 6 is blocked by the blocking means 45, the air flow to the toilet room 5 is It is possible only through the air supply hole 32 and the mounting hole of the exhaust device 31A, or only through the air supply hole 32 and the exhaust hole 111.

本発明は、一般的な木造住宅にも適用できる。   The present invention can also be applied to a general wooden house.

建物の外壁に形成されて建物外部と建物内部の居住外空間である床下空間又は天井裏空間とに跨って貫通する空気取込孔５１を設けるとともに、この空気取込孔５１と空気供給孔３２とを繋ぐ空気流通経路６０を構成してもよい。この場合でも、建物外部から空気流通経路６０を経由して特定の部屋に空気が供給されて特定の部屋の換気を行えるとともに、特定の部屋の室内で発生した音の部屋外への透過量を少なくできるという効果が得られる。   An air intake hole 51 that is formed in the outer wall of the building and extends through the building exterior and the underfloor space or the ceiling back space that is a non-residential space inside the building is provided, and the air intake hole 51 and the air supply hole 32 are provided. You may comprise the air distribution path 60 which connects. Even in this case, air is supplied from the outside of the building to the specific room via the air flow path 60 to ventilate the specific room, and the amount of sound generated in the room of the specific room is transmitted to the outside. The effect that it can be reduced is obtained.

特定の部屋と天井裏空間３３とに跨って貫通する空気供給孔３２と、特定の部屋以外の建物内の居住空間と天井裏空間３３とに跨って貫通する空気取込孔５１とを形成することによって、これら空気取込孔５１と空気供給孔３２とを繋ぐ空気流通経路６０を構成してもよい。この場合、天井板１６の端面と壁の内面とが接触することによるこすれ音の発生をなくすことができる。   An air supply hole 32 that penetrates across the specific room and the ceiling space 33 and an air intake hole 51 that penetrates the living space in the building other than the specific room and the ceiling space 33 are formed. Accordingly, an air flow path 60 that connects the air intake hole 51 and the air supply hole 32 may be configured. In this case, it is possible to eliminate the generation of a rubbing sound due to the contact between the end surface of the ceiling plate 16 and the inner surface of the wall.

少なくとも、排気側の遮音ダクト１００及び給気側の遮音ダクト１００Ｂのうち１つ設ければよい。この場合でも、空気流通経路６０を経由して特定の部屋に空気が供給されて特定の部屋の換気を行えるとともに、遮断手段４５及び１つの遮音ダクトにより特定の部屋の室内で発生した音の部屋外への透過量を少なくできるという効果が得られる。   At least one of the sound insulation duct 100 on the exhaust side and the sound insulation duct 100B on the air supply side may be provided. Even in this case, a specific room can be ventilated by supplying air to the specific room via the air flow path 60, and the room of the sound generated in the room of the specific room by the blocking means 45 and one sound insulating duct. The effect that the amount of permeation to the outside can be reduced is obtained.

空気供給孔３２は、床下空間３５から床板１３及び特定の部屋の間仕切り壁を経由して特定の部屋の室内に通じる孔、あるいは、天井裏空間３３から天井板１６及び特定の部屋の間仕切り壁を経由して特定の部屋の室内に通じる孔により形成してもよい。   The air supply hole 32 is a hole that communicates from the underfloor space 35 to the interior of the specific room via the floor plate 13 and the partition wall of the specific room, or the ceiling plate 16 and the partition wall of the specific room from the ceiling back space 33. You may form by the hole which leads to the room | chamber interior of a specific room via.

尚、特定の部屋は、トイレ室５以外の、例えば、居間、洗濯室、子供部屋などの部屋でもよい。   The specific room may be a room other than the toilet room 5, such as a living room, a laundry room, and a child room.

マンションの一戸のトイレ室を示す断面図（最良の形態１）。Sectional drawing which shows the toilet room of the apartment of an apartment (the best form 1). マンションの一戸を示す断面図（最良の形態１）。Sectional drawing which shows one house of an apartment (best form 1). マンションの一戸を示す平面図（最良の形態１）。The top view which shows one house of an apartment (best form 1). マンションの一戸のトイレ室を示す断面図（最良の形態２）。Sectional drawing which shows the toilet room of the apartment of an apartment (best form 2). マンションの一戸のトイレ室を示す断面図（最良の形態３）。Sectional drawing which shows the toilet room of the apartment of an apartment (best form 3). マンションの一戸のトイレ室を示す断面図（最良の形態４）。Sectional drawing which shows the toilet room of the apartment of an apartment (best form 4). マンションの一戸を示す断面図（最良の形態６）。Sectional drawing which shows one house of an apartment (best form 6). マンションの一戸を示す断面図（最良の形態７）。Sectional drawing which shows one house of an apartment (best form 7). （ａ）は遮音構成部の斜視図、（ｂ）は遮音構成部を前側から見た図（最良の形態８）。(A) is the perspective view of a sound insulation structure part, (b) is the figure which looked at the sound insulation structure part from the front side (best form 8). 遮音構成部の断面図（最良の形態８）。Sectional drawing (best form 8) of a sound insulation structure part. 遮音構成部の斜視図（最良の形態９）。The perspective view of the sound insulation structure part (best form 9). 遮音構成部の斜視図（最良の形態１０）。The perspective view of the sound insulation structure part (best form 10). 遮音構成部の断面図（最良の形態１０）。Sectional drawing of sound insulation structure part (best form 10). 遮音構成部の斜視図（最良の形態１１）。The perspective view of the sound insulation structure part (the best form 11). 遮音構成部の断面図（最良の形態１１）。Sectional drawing of the sound insulation structure part (the best form 11). 遮音構成部の音圧レベル減衰量を測定した実験装置を示す図（最良の形態８乃至１３及び比較例）。The figure which shows the experimental apparatus which measured the sound pressure level attenuation amount of the sound-insulation structure part (best form 8 thru | or 13 and a comparative example). 実験結果を示す表（最良の形態８乃至１３及び比較例）。Table showing experimental results (best mode 8 to 13 and comparative example). 実験結果を示すグラフ（最良の形態８乃至１３及び比較例）。The graph which shows an experimental result (best form 8 thru | or 13 and a comparative example). 実験結果を示すグラフ（最良の形態１乃至１３及び比較例）。The graph which shows an experimental result (best form 1 thru | or 13 and a comparative example). 遮音構成部を示す図（最良の形態１４）。The figure which shows a sound-insulation structure part (best form 14). 遮音構成部を示す図（最良の形態１４）。The figure which shows a sound-insulation structure part (best form 14). 遮音構成部の他例を示す図（最良の形態１４）。The figure which shows the other example of a sound-insulation structure part (best form 14).

符号の説明Explanation of symbols

５ トイレ室（特定の部屋）、１３ 床板、１３Ａ 床板の端面、
３１ 排気手段、３１Ａ 排気装置（排気手段）、３２ 空気供給孔、
３５ 床下空間、４１ 出入口、４５ 遮断手段、５１ 空気取込孔、
６０ 空気流通経路、９５ 一端側開放口、９６ 他端側開放口、
１００ 遮音構成部、１０２ 内筒体、１０３ 外筒体、１０４ 蓋体、
１１１ 空気層、１１５ 前側有孔筒部、１１６ 後側有孔筒部、１１８ 孔、
１２０ 吸音材部、１２１ 吸音材収納部、１２２ 吸音材、
２００ 遮音ダクト（給気側の遮音ダクト）、２００Ａ 排気側の遮音ダクト、
２０４ 遮音経路、２０５ 一端側開放口、２０６ 他端側開放口、
２０８ 往復路、２０９ 蛇行路、２１１ 排気孔、Ｓ 隙間。 5 Toilet room (specific room), 13 floor board, 13A end face of floor board,
31 exhaust means, 31A exhaust device (exhaust means), 32 air supply hole,
35 underfloor space, 41 doorway, 45 blocking means, 51 air intake hole,
60 air flow path, 95 one end side opening, 96 the other end side opening,
100 sound insulation component, 102 inner cylinder, 103 outer cylinder, 104 lid,
111 air layer, 115 front perforated cylinder, 116 rear perforated cylinder, 118 holes,
120 sound-absorbing material part, 121 sound-absorbing material storage part, 122 sound-absorbing material,
200 sound insulation duct (sound insulation duct on the air supply side), 200A sound insulation duct on the exhaust side,
204 sound insulation path, 205 one end side opening, 206 the other end side opening,
208 reciprocating path, 209 meandering path, 211 exhaust hole, S gap.

Claims (5)

複数戸からなる集合住宅を構成し、床が床スラブの上に設置された複数の床支持具と床支持具に敷設された複数の床材とを備えた二重床により形成された建物であって、
トイレ室と、トイレ室内の空気をトイレ室外に排出するための排気手段と、トイレ室への出入口を経由して隣り合うトイレ室とトイレ室以外の建物内部との間の空気の流通を遮断する遮断手段と、トイレ室の床板の端面と一戸を区画する壁との縁を切る隙間により形成されて床下空間とトイレ室内とに通じる空気供給孔と、トイレ室内に設置された遮音ダクトとを備え、
遮音ダクトは、一端側開放口と空気供給孔とが互いに繋がれ、他端側開放口がトイレ室内に開放されたことによって、トイレ室内と空気供給孔とを繋ぐ遮音経路を形成したことを特徴とする建物。 It is a building formed of a double floor with multiple floor supports with multiple floor supports installed on the floor slab and multiple floor materials laid on the floor support, constituting an apartment house consisting of multiple units There,
And toilet room, and exhaust means for exhausting the air in the toilet room outside the toilet room, a circulation of air between the toilet room and the interior building other than toilet room adjacent via gateway to the toilet room and interrupting means for interrupting the air supply hole that is formed by a clearance cut the edges of the walls defining the end face and Ichinohe toilet room floor leading to the underfloor space and toilet room, sound insulation ducts installed in the toilet room And
Sound insulation ducts are connected to each other and one end side opening port and the air supply hole, by the other end opening port is opened in the toilet room, to the formation of the sound insulation path connecting the inside toilet room and the air supply hole Building characterized by. トイレ室以外の複数の部屋の床板の端面と一戸を区画する壁との縁を切る隙間により形成されてトイレ室以外の部屋と床下空間とに通じる空気取込孔を備え、
トイレ室への出入口を経由するトイレ室とトイレ室以外の建物内部との間の空気の流通が遮断手段により遮断され、かつ、排気手段の駆動によりトイレ室内が負圧になった場合に、トイレ室以外の複数の部屋からの空気が空気取込孔、床下空間、空気供給孔を経由してトイレ室内に供給されるように構成されたことを特徴とする請求項１に記載の建物。 It has an air intake hole that is formed by a gap that cuts the edge between the end face of the floorboard of multiple rooms other than the toilet room and the wall that divides one house, and communicates with the room other than the toilet room and the underfloor space,
When the air flow between the toilet room via the entrance to the toilet room and the inside of the building other than the toilet room is blocked by the blocking means, and the toilet room becomes negative pressure due to the drive of the exhaust means, the toilet The building according to claim 1, wherein air from a plurality of rooms other than the room is supplied into the toilet room via an air intake hole, an underfloor space, and an air supply hole . 遮音経路が、トイレ室の床と天井との間を往復する往復路により形成されたことを特徴とする請求項１又は請求項２に記載の建物。 The building according to claim 1 or 2 , wherein the sound insulation path is formed by a reciprocating path that reciprocates between a floor and a ceiling of a toilet room . 遮音経路が、トイレ室の床と天井との間の蛇行路により形成されたことを特徴とする請求項１又は請求項２に記載の建物。 The building according to claim 1 or 2 , wherein the sound insulation path is formed by a meandering path between a floor and a ceiling of a toilet room . 遮音ダクトは遮音構成部を備え、遮音構成部は、外筒体と、外筒体の内側に設けられた内筒体と、外筒体及び内筒体の筒の中心軸の延長する筒の前後の端部において外筒体の端部と内筒体の端部とを互いに繋いで外筒体の端部と内筒体の端部との間を密閉状態に塞ぐ塞体と、外筒体と内筒体と塞体とで囲まれた空気層とを備えたことを特徴とする請求項１又は請求項２に記載の建物。 The sound insulation duct includes a sound insulation component, and the sound insulation component includes an outer cylinder, an inner cylinder provided inside the outer cylinder, and a cylinder extending from the central axis of the outer cylinder and the inner cylinder. An outer cylinder that connects the end of the outer cylinder and the end of the inner cylinder to each other at the front and rear ends to seal between the end of the outer cylinder and the end of the inner cylinder in a sealed state; building according to claim 1 or claim 2, characterized in that a body and the inner cylindrical body and塞体an air layer surrounded by.
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