JP4994019B2 - building - Google Patents

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JP4994019B2
JP4994019B2 JP2006340466A JP2006340466A JP4994019B2 JP 4994019 B2 JP4994019 B2 JP 4994019B2 JP 2006340466 A JP2006340466 A JP 2006340466A JP 2006340466 A JP2006340466 A JP 2006340466A JP 4994019 B2 JP4994019 B2 JP 4994019B2
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sound insulation
sound
toilet room
cylinder
air
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JP2008150876A (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トイレ室の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 outside the toilet room via the air circulation port.

本発明による建物は、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、トイレ室内と床下空間とに跨って貫通する空気供給孔と、廊下と床下空間とに跨って貫通する空気取込孔と、床下空間に設置された遮音ダクトとを備え、遮音ダクトは、一端開放口と空気供給孔とが互いに繋がれ、他端開放口と空気取込孔とが互いに繋がれたことによって、トイレ室内と廊下とを繋ぐ遮音経路を形成した。
本発明による建物は、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、トイレ室内と天井裏空間とに跨って貫通する空気供給孔と、廊下と天井裏空間とに跨って貫通する空気取込孔と、天井裏空間に設置された遮音ダクトとを備え、遮音ダクトは、一端開放口と空気供給孔とが互いに繋がれ、他端開放口と空気取込孔とが互いに繋がれたことによって、トイレ室内と廊下とを繋ぐ遮音経路を形成した。
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、内筒体は、筒の内部と空気層とに跨って貫通する複数の孔を備えた。
遮音ダクトは遮音構成部を備え、遮音構成部は、音を通過させる蛇行路を備えた。 Building according to the present invention, the toilet room and, in an exhaust means for discharging the air in the toilet room outside the toilet room, the toilet compartment and internal building other than toilet room adjacent via gateway to the toilet room Installed in the underfloor space , blocking means for blocking the air flow between, the air supply hole penetrating across the toilet room and the underfloor space , the air intake hole penetrating across the corridor and the underfloor space, and The sound insulation duct has a sound insulation path that connects the toilet room and the corridor by connecting one end opening and the air supply hole to each other and connecting the other end opening and the air intake hole to each other. Formed.
Building according to the present invention, the toilet room and, in an exhaust means for discharging the air in the toilet room outside the toilet room, the toilet compartment and internal building other than toilet room adjacent via gateway to the toilet room In the ceiling space , a blocking means for blocking the air flow between, an air supply hole penetrating the toilet room and the ceiling space , an air intake hole penetrating the hallway and the ceiling space, and the ceiling space and a the installed sound insulation ducts, sound insulation ducts are connected to each other and one end opening port and the air supply hole, by the other end opening port and the air intake hole tethered together, and a toilet room and hallway A sound insulation path to connect was formed.
Sound insulation duct has a sound insulating structure section, sound insulation structure portion includes an outer cylindrical body, the cylindrical body inner provided inside the outer cylinder, the extension to the cylinder of the central axis of the cylinder of the outer cylindrical body and the inner cylinder An outer cover that connects the end of the outer cylinder and the end of the inner cylinder to each other at the front and rear end portions of the outer cylinder and seals a gap between the end of the outer cylinder and the end of the inner cylinder, An air layer surrounded by the cylindrical body, the inner cylindrical body, and the closing body is provided, and the inner cylindrical body includes a plurality of holes penetrating through the inside of the cylinder and the air layer.
The sound insulation duct includes a sound insulation component, and the sound insulation component includes a meandering path through which sound passes .

本発明によれば、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、トイレ室内と床下空間あるいは天井裏空間とに跨って貫通する空気供給孔と、廊下と床下空間あるいは天井裏空間とに跨って貫通する空気取込孔と、床下空間あるいは天井裏空間に設置された遮音ダクトとを備え、遮音ダクトは、一端開放口と空気供給孔とが互いに繋がれ、他端開放口と空気取込孔とが互いに繋がれたことによって、トイレ室内と廊下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外への透過量を少なくできるとともに、トイレ室の換気を効率的に行えるという効果が得られる。
遮音構成部を備えた遮音ダクトを用いれば、遮音効果が向上する。 According to the present invention, between a toilet room, an exhaust means for discharging the air in the toilet room to the outside of the toilet room, and a toilet room adjacent to the inside of the building other than the toilet room via the entrance to the toilet room A blocking means for blocking air flow, an air supply hole penetrating the toilet room and the underfloor space or the ceiling space, an air intake hole penetrating the hallway and the underfloor space or the ceiling space, A sound insulation duct installed in an underfloor space or a ceiling space, and the sound insulation duct is formed by connecting one end opening and the air supply hole to each other, and connecting the other end opening and the air intake hole to each other. since the formation of the sound insulation path connecting the lavatory and corridors, it is possible to reduce the amount of transmission of the toilet room outside the sound generated in the toilet room, the effect is obtained that enables the ventilation of the toilet room efficiently.
With the sound insulation duct having a sound insulation structure portion, thereby improving the sound insulating effect.

最良の形態１
図１乃至図２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）における一戸を断面（図２のＡ−Ａ断面に相当）で示し、図２は一戸の平面図（間取り）を示し、図３は遮音構成部を示し、図３（ａ）は遮音構成部の外観を示し、図３（ｂ）は遮音構成部を前側から見て示し、図４は排気ダクトを形成する遮音構成部の断面を示す。本明細書において、「前」、「後」、「左」、「右」、「上」、「下」の方向は、図３（ａ）の状態に遮音構成部を置いて矢印Ａで示す前側から見た場合に特定される方向である。 Best form 1
1 and 2 show the best mode 1 of a building according to the present invention. FIG. 1 shows a section in a condominium (a collective house) as a building in section (corresponding to the section AA in FIG. 2). FIG. 3 shows the sound insulation component, FIG. 3 (a) shows the appearance of the sound insulation component, FIG. 3 (b) shows the sound insulation component viewed from the front side, and FIG. 4 shows a cross section of the sound insulation component forming the exhaust duct. In this specification, the directions of “front”, “rear”, “left”, “right”, “upper”, and “lower” are indicated by an arrow A with the sound insulation component placed in the state of FIG. This is the direction specified when viewed from the front side.

図１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２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. 1, 1 is a floor, 2 is a border wall, 4 is a ceiling, 5 is a toilet room, 6 is a corridor, and 7 is a living room (western room).
In FIG. 2, 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２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２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。尚、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. As shown in FIG. 2, the space between the end face of the floor plate 13 of the floor 1 and the inner walls of the partition wall 2, the partition wall 2 A, and the partition wall 2 B that divides one room, Since it has a structure in which a space (a hatched portion in FIG. 2) is provided through the underfloor space, the end surface and the wall of the floor plate 13 can be in a state where the edges are cut off. It is possible to eliminate the generation of rubbing noise caused by contact with the. Note that 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 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、図外のトイレ設備の他に、排気手段３１と空気供給孔３２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、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の室内とトイレ室５の床下空間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 and an air supply hole 32 in addition to toilet facilities not shown.
The exhaust means 31 is formed by an exhaust device 31A such as a ventilation fan, for example. 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.
The air supply hole 32 penetrates through the toilet room 5 and the underfloor space 35 of the toilet room 5. 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.

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。   A person's entrance 41 to the toilet room 5 includes 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、特定の部屋以外の部屋の室内と床下空間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 the room other than the specific room and the underfloor space 35. 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.

トイレ室５の床下空間３５には、遮音ダクト１０が設置される。
遮音ダクト１０は、遮音構成部１００と、遮音構成部１００の一端に接続された接続管９９とを備える。即ち、遮音ダクト１０は、遮音構成部１００の一端開放口９５と接続管９９の他端開放口９７とが互いに繋がれ、接続管９９の一端開放口９８と空気供給孔３２とが互いに繋がれ、遮音構成部１００の他端開放口９６が床下空間３５に開放されたことによって、トイレ室５の室内と床下空間３５とを繋ぐ遮音経路６５を形成する。尚、遮音ダクト１０は、例えば取付具６６により床板１３の下面に取り付けられる。 The sound insulation duct 10 is installed in the underfloor space 35 of the toilet room 5.
The sound insulation duct 10 includes a sound insulation component 100 and a connection pipe 99 connected to one end of the sound insulation component 100. That is, in the sound insulation duct 10, the one end opening 95 of the sound insulation component 100 and the other end opening 97 of the connection pipe 99 are connected to each other, and the one end opening 98 of the connection pipe 99 and the air supply hole 32 are connected to each other. When the other end opening 96 of the sound insulation component 100 is opened to the underfloor space 35, a sound insulation path 65 that connects the interior of the toilet room 5 and the underfloor space 35 is formed. In addition, the sound insulation duct 10 is attached to the lower surface of the floor board 13 with the attachment tool 66, for example.

図３及び図４を参照し、遮音構成部１００の構造を説明する。
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。 With reference to FIG.3 and FIG.4, the structure of the sound insulation structure part 100 is demonstrated.
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、上下方向の長さの短い天井裏空間においても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, it is possible to obtain the sound insulation component 100 that can be easily installed even in a ceiling space with a short vertical length. 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４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. 4, 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, and the front perforated cylindrical portion 115. 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%.

尚、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のみ可能である。   When the air flow path between the interior of the toilet room 5 and the corridor 6 via the opening 42 is blocked by the blocking means 45, the air flow to the toilet room 5 is connected to the air supply hole 32 and the exhaust device. This is possible only via the 31A mounting hole.

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、床下空間３５、空気供給孔３２により形成される空気流通経路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 a room other than the specific room ) 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 via the air flow path 60 formed by the air intake hole 51, the underfloor space 35, and the air supply hole 32. Toy for Perform the ventilation of the chamber 5 efficient.

つまり、従来は、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）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。   In other words, conventionally, an air circulation port (undercut) for ventilation is provided at the lower part of the door of the toilet room, so even when the door is closed, the toilet room is connected via the air circulation port. The sound generated in the room has propagated to the corridor via the air circulation port. According to the best mode 1, since the blocking means 45 is provided, the door of the sound generated in the room of the toilet room 5 is provided. The amount of permeation to the corridor 6 that has passed through can be reduced, and the exhaust device 31A and the air flow path 60 are provided, so that an effect of efficiently ventilating the toilet room 5 can be obtained.

そして、遮音ダクト１０と空気供給孔３２とが互いに繋がれたので、トイレ室５の室内で発生した音が空気供給孔３２を経由して遮音ダクト１０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。
さらに、遮音ダクト１０をトイレ室５の外に設置したので、トイレ室５の室内スペースを狭めてしまうこともない。
また、遮音ダクト１０を床下空間３５に設置したことで、音を建物の居住空間外で減衰できるので、トイレ室５の室内から建物の居住空間内への音の透過量を少なくできる。 Since the sound insulation duct 10 and the air supply hole 32 are connected to each other, the sound generated in the toilet room 5 enters the sound insulation duct 10 via the air supply hole 32 and is attenuated by the sound insulation component 100. The amount of sound generated in the toilet room 5 through the hallway 6 can be further reduced.
Furthermore, since the sound insulation duct 10 is installed outside the toilet room 5, the indoor space of the toilet room 5 is not reduced.
Moreover, since the sound insulation duct 10 is installed in the underfloor space 35, the sound can be attenuated outside the living space of the building, so that the amount of sound transmitted from the toilet room 5 into the living space of the building can be 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の外面とに衝突することにより減衰する。最良の形態１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. And the low frequency component of the sound that has entered the air layer 111 is attenuated by colliding with the inner surface of the outer cylinder 103 and the outer surface of the inner cylinder 102. In the sound insulation component 100 of the best mode 1, 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 in contact with the air layer 111. 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１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 1, 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.

尚、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１３に通じるように設ければよい。例えば、床下空間１３と特定の部屋以外の建物内部としての廊下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。   In addition, what is necessary is just to provide the air intake hole 51 so that it may lead to the underfloor space 13 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 13 and the corridor 6 as the inside of buildings other than a specific room.

最良の形態２
最良の形態１の遮音構成部１００に代えて、図５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２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 form 2
Instead of the sound insulation component 100 of the best mode 1, a sound insulation duct 10 provided with the sound insulation component 100 as shown in FIG. 5 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 2, the high-frequency component of the sound that has entered the air layer 111 of the sound-insulating component 100 of the sound-insulating duct 10 from the toilet room 5 is absorbed and attenuated by the rock felt 150, so that the high-frequency component of the sound Can be attenuated more effectively.

最良の形態３
図６；７に示すように、最良の形態２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２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 3
As shown in FIGS. 6 and 7, in place of the inner cylinder 102 of the sound insulation component 100 described in the best mode 2, a plurality of holes 118 are formed uniformly 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 2, 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 interior of 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４
図８；９に示すように、最良の形態２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４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１１８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１１８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 4
As shown in FIGS. 8 and 9, a composite inner cylinder 102 </ b> B is provided instead of the inner cylinder 102 described in the best mode 2. 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 4, the sound that has entered the sound insulation component 100 from the toilet room 5 enters the air layer 111 through the plurality of holes 118, 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 118 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５
図６；７で示した最良の形態３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５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２Ａ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 5
6; 7, 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 3 shown in FIG. 7, and the inner surfaces of the left and right cylinder wall portions 108; 109 of the outer cylinder 103 are wound. 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 5 configured by winding the fiber laminated plate 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 cylinder 2A 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６
最良の形態５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 6
In the sound insulation component 100 according to the best mode 5, the sound insulation component 100 is configured such that the rock felt 150 as a 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１乃至最良の形態６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１０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１０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１０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１乃至最良の形態６による遮音構成部１００及び比較例Ｐでの測定結果を図１１に示す。 As the sound insulation component 100 according to the best form 1 to the best form 6, 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 performed with the experimental apparatus shown in FIG. That is, the one end 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 opening 96 of the sound insulation component 100 is connected to the other end opening 96. A front cylindrical opening 162 of the rear cylindrical tube 162 having an inner diameter of 150 mm is 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 disposed at 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. 10 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. 11 shows the measurement results of the sound insulation component 100 according to the best mode 1 to the best mode 6 and the comparative example P.

最良の形態１乃至６による遮音構成部１の遮音効果について図１１乃至図１３を参照し、説明する。尚、図１１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１２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１乃至６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１３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１乃至６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 1 to 6 will be described with reference to FIGS. 11 to 13. In addition, the numerical value on the left side shown in the column of the form of the sound insulation component 100 in FIG. 11 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. 12, the result of the sound insulation structure part 100 by the best form 1 thru | or 6 at the time of making the left-right length W = 360mm of the outer cylinder 103 was collectively shown on the graph. In FIG. 13, the result of the sound insulation structure part 100 by the best form 1 thru | or 6 when the left-right length W of the outer cylinder 103 is set to 500 mm was collectively shown on the graph.

Ｗ＝３６０ｍｍの場合、最良の形態１：２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２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６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１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 1: 2 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. The sound insulation component 100 used in the best mode 2 is further provided with the rock felt 150, so that the sound pressure level attenuation amount for the sound of the high frequency component of 500 Hz band or higher 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 6 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 1 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７
図１４乃至図１６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１４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１５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１６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 7
You may use the sound insulation duct 10 provided with the sound insulation structure part 100 as shown in FIG. 14 thru | or FIG. FIG. 14 shows a sound insulation component 100 having a structure in which the sizes of the air layers 111 on the left and right sides of the inner cylinder 102 are made different. FIG. 15 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. 16 shows a sound insulation component 100 having a configuration in which the upper and lower lengths H of the outer cylinder 103 are made larger than the outer diameter of the inner cylinder 102 to form an air layer 111 continuous in the upper, lower, left and right of the inner cylinder 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.

最良の形態８
図１７に示すように、遮音構成部１００と、遮音構成部１００の一端に接続された接続管９９と、遮音構成部１００の他端に接続された接続管９０とを備え、接続管９９の一端開放口９８と空気供給孔３２とが互いに繋がれ、接続管９０の他端開放口９１と空気取込孔５１とが互いに繋がれた遮音ダクト１０を用いてもよい。即ち、床下空間３５に設置された遮音ダクト１０は、遮音構成部１００の一端開放口９５と接続管９９の他端開放口９７とが互いに繋がれ、接続管９９の一端開放口９８と空気供給孔３２とが互いに繋がれ、遮音構成部１００の他端開放口９６と接続管９０の一端開放口９２とが互いに繋がれ、接続管９０の他端開放口９１と空気取込孔５１とが互いに繋がれたことによって、特定の部屋と特定の部屋以外の建物内とを繋ぐ遮音経路６５を形成する。図１７では、遮音ダクト１０でトイレ室５の室内と廊下６の空間とを繋いだ例を図示した。
最良の形態８によれば、最良の形態１と同様な効果が得られる他、遮音ダクト１０が特定の部屋以外に形成された空気取込孔５１に繋がれたので、特定の部屋以外の例えば空調機を備えた居室７内の空調空気をトイレ室５の室内に供給できるという効果も得られる。 Best form 8
As shown in FIG. 17, the sound insulation component 100, a connection pipe 99 connected to one end of the sound insulation component 100, and a connection pipe 90 connected to the other end of the sound insulation component 100 are provided. The sound insulation duct 10 in which the one end opening 98 and the air supply hole 32 are connected to each other and the other end opening 91 of the connecting pipe 90 and the air intake hole 51 are connected to each other may be used. That is, in the sound insulation duct 10 installed in the underfloor space 35, the one end opening 95 of the sound insulation component 100 and the other end opening 97 of the connecting pipe 99 are connected to each other, and the one end opening 98 of the connecting pipe 99 and the air supply are supplied. The other end opening 96 of the sound insulation component 100 and the one end opening 92 of the connecting pipe 90 are connected to each other, and the other end opening 91 of the connecting pipe 90 and the air intake hole 51 are connected to each other. By being connected to each other, a sound insulation path 65 that connects a specific room and a building other than the specific room is formed. In FIG. 17, the example which connected the room of the toilet room 5 and the space of the corridor 6 with the sound insulation duct 10 was illustrated.
According to the best mode 8, the same effect as the best mode 1 can be obtained, and the sound insulation duct 10 is connected to the air intake holes 51 formed outside the specific room. The effect that the conditioned air in the living room 7 provided with the air conditioner can be supplied to the room of the toilet room 5 is also obtained.

最良の形態９
図１８に示すように、トイレ室５の室内とトイレ室５の天井裏空間３３とに跨って貫通する空気供給孔３２を形成するとともに、図１と同様の遮音構成部１００と、遮音構成部１００の一端に接続された接続管９９とを備えた遮音ダクト１０をトイレ室５の天井裏空間３３に設置してもよい。
即ち、遮音ダクト１０は、遮音構成部１００の一端開放口９５と接続管９９の他端開放口９７とが互いに繋がれ、接続管９９の一端開放口９８と空気供給孔３２とが互いに繋がれ、遮音構成部１００の他端開放口９６が天井裏空間３３に開放されたことによって、特定の部屋としてのトイレ室５の室内と特定の部屋以外の建物内とを繋ぐ遮音経路６５を形成する。尚、遮音ダクト１０は、例えば取付具６６により天井板１６の上面に取り付けられる。
空気供給孔３２は、天井板１６の端面が壁２の内面より離れて設置されたことによって天井板１６の端面と壁２の内面との間に設けられた隙間Ｓにより形成された構成であれば、天井板１６の端面と壁２の内面とが縁の切れた状態となるので、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。また、天井板１６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、天井４の見栄えをよくできる。
最良の形態９によれば、最良の形態１と同様な効果が得られる他、遮音ダクト１０を天井裏空間３３に設置したことで、音を建物の居住空間外で減衰できるとともに、建物の居住空間に居住する人からより離れた場所で音を減衰できるので、トイレ室５の室内から建物の居住空間内への音の透過量を少なくできる。 Best 9
As shown in FIG. 18, the air supply hole 32 penetrating over the interior of the toilet room 5 and the ceiling space 33 of the toilet room 5 is formed, and the sound insulation component 100 and the sound insulation component similar to those in FIG. 1 are formed. The sound insulation duct 10 including the connection pipe 99 connected to one end of the 100 may be installed in the ceiling space 33 of the toilet room 5.
That is, in the sound insulation duct 10, the one end opening 95 of the sound insulation component 100 and the other end opening 97 of the connection pipe 99 are connected to each other, and the one end opening 98 of the connection pipe 99 and the air supply hole 32 are connected to each other. When the other end opening 96 of the sound insulation component 100 is opened to the ceiling space 33, a sound insulation path 65 that connects the room of the toilet room 5 as a specific room and the inside of the building other than the specific room is formed. . In addition, the sound insulation duct 10 is attached to the upper surface of the ceiling board 16 by the attachment tool 66, for example.
The air supply hole 32 may be formed by a gap S provided between the end surface of the ceiling plate 16 and the inner surface of the wall 2 by installing the end surface of the ceiling plate 16 away from the inner surface of the wall 2. For example, since the end surface of the ceiling plate 16 and the inner surface of the wall 2 are cut off, 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 can be eliminated. Moreover, since the air supply hole 32 can be formed in the ceiling board 16 without forming a hole with a drill etc., the formation operation of the air supply hole 32 becomes easy and the appearance of the ceiling 4 can be improved.
According to the best form 9, in addition to the same effect as the best form 1, the sound insulation duct 10 is installed in the ceiling space 33, so that the sound can be attenuated outside the living space of the building and Since sound can be attenuated at a location farther away from the person living in the space, the amount of sound transmitted from the toilet room 5 into the living space of the building can be reduced.

最良の形態１０
図１９に示すように、遮音構成部１００と、遮音構成部１００の一端に接続された接続管９９と、遮音構成部１００の他端に接続された接続管９０とを備え、接続管９９の一端開放口９８と空気供給孔３２とが互いに繋がれ、接続管９０の他端開放口９１と空気取込孔５１とが互いに繋がれた遮音ダクト１０を用いてもよい。即ち、遮音ダクト１０は、遮音構成部１００の一端開放口９５と接続管９９の他端開放口９７とが互いに繋がれ、接続管９９の一端開放口９８と空気供給孔３２とが互いに繋がれ、遮音構成部１００の他端開放口９６と接続管９０の一端開放口９２とが互いに繋がれ、接続管９０の他端開放口９１と空気取込孔５１とが互いに繋がれたことによって、特定の部屋としてのトイレ室５の室内と特定の部屋以外の建物内とを繋ぐ遮音経路６５を形成する。図１９では、遮音ダクト１０でトイレ室５の室内と廊下６の空間とを繋いだ例を図示した。
最良の形態１０によれば、最良の形態９と同様な効果が得られる他、遮音ダクト１０が特定の部屋以外に形成された空気取込孔５１に繋がれたので、特定の部屋以外の例えば空調機を備えた居室７内の空調空気をトイレ室５の室内に供給できるという効果も得られる。尚、ここでの空気取込孔５１は、隙間Ｓではなく、接続管９０の他端開放口９１にのみ連通する他端開放口９１に対応した大きさの孔である。 Best form 10
As shown in FIG. 19, the sound insulation component 100, a connection pipe 99 connected to one end of the sound insulation component 100, and a connection pipe 90 connected to the other end of the sound insulation component 100 are provided. The sound insulation duct 10 in which the one end opening 98 and the air supply hole 32 are connected to each other and the other end opening 91 of the connecting pipe 90 and the air intake hole 51 are connected to each other may be used. That is, in the sound insulation duct 10, the one end opening 95 of the sound insulation component 100 and the other end opening 97 of the connection pipe 99 are connected to each other, and the one end opening 98 of the connection pipe 99 and the air supply hole 32 are connected to each other. The other end opening 96 of the sound insulation component 100 and the one end opening 92 of the connecting pipe 90 are connected to each other, and the other end opening 91 of the connecting pipe 90 and the air intake hole 51 are connected to each other. A sound insulation path 65 that connects the interior of the toilet room 5 as a specific room and the inside of the building other than the specific room is formed. In FIG. 19, the example which connected the room of the toilet room 5 and the space of the corridor 6 with the sound insulation duct 10 was illustrated.
According to the best mode 10, the same effect as the best mode 9 can be obtained, and the sound insulation duct 10 is connected to the air intake hole 51 formed outside the specific room. The effect that the conditioned air in the living room 7 provided with the air conditioner can be supplied to the room of the toilet room 5 is also obtained. Here, the air intake hole 51 is not a gap S but a hole having a size corresponding to the other end opening 91 that communicates only with the other end opening 91 of the connection pipe 90.

最良の形態１１
図２０に示すように、蛇行路６７により形成された遮音経路６５を備えた遮音構成部１００を備えた金属製の遮音ダクト１０を用いてもよい。即ち、遮音構成部１００は、筐体６８内に設けられた仕切り板６９によって、一端開放口９５と他端開放口９６とに繋がる遮音経路６５が、一端開放口９５から他端開放口９６に向かう方向に沿って蛇行するように形成された構成である。
最良の形態１１によれば、さらに、遮音経路６５の内面の面積を大きくできたので、こ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。尚、筐体６８の内面及び仕切り板６９の表面にグラスウールやロックウールのような吸音材を設けることにより、音の高周波成分は吸音材に吸音されることによって減衰する。 Best form 11
As shown in FIG. 20, a metal sound insulating duct 10 including a sound insulating component 100 including a sound insulating path 65 formed by a meandering path 67 may be used. That is, in the sound insulation component 100, the sound insulation path 65 connected to the one end opening 95 and the other end opening 96 is changed from the one end opening 95 to the other end opening 96 by the partition plate 69 provided in the housing 68. It is the structure formed so that it might meander along the direction to go.
According to the best mode 11, since the area of the inner surface of the sound insulation path 65 can be increased, the low frequency component of the sound colliding with the inner surface is increased, and the attenuation effect of the low frequency component of the sound is improved. In addition, by providing a sound absorbing material such as glass wool or rock wool on the inner surface of the housing 68 and the surface of the partition plate 69, the high frequency component of the sound is attenuated by being absorbed by the sound absorbing material.

最良の形態１２
床板１３や天井板１６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 12
The air intake holes 51 and the air supply holes 32 may be formed by drilling through holes in the floor plate 13 and the ceiling plate 16. 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１３
間仕切り壁を施工した後に床を施工する場合には、図２１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、床下空間３５、貫通孔６１、空気供給孔３２からなる空気流通経路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 13
When constructing a floor after constructing a partition wall, as shown in FIG. 21, by forming a through hole 61 in the lower part of the partition wall 22 located in the underfloor space 13, an air intake hole 51 and an underfloor space are formed. 35, the air circulation path 60 including the through hole 61 and the air supply hole 32 may be formed. 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１４
図２２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。 Best form 14
As shown in FIG. 22, 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.

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.

空気供給孔３２は、特定の部屋内と特定の部屋の外とに跨って貫通するように特定の部屋の壁に形成し、特定の部屋の外側にこの空気供給孔３２と繋がる遮音ダクト１０を設けてもよい。   The air supply hole 32 is formed in the wall of a specific room so as to penetrate between the specific room and the outside of the specific room, and the sound insulation duct 10 connected to the air supply hole 32 is formed outside the specific room. It may be provided.

建物の外壁に形成されて建物外部と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。   You may provide the air intake hole 51 which is formed in the outer wall of a building and penetrates across the building exterior and underfloor space or ceiling back space. 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.

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). （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１）。(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 1). 遮音構成部の断面図（最良の形態１）。Sectional drawing of sound insulation structure part (best form 1). 遮音構成部の斜視図（最良の形態２）。The perspective view of the sound insulation structure part (best form 2). 遮音構成部の斜視図（最良の形態３）。The perspective view of the sound insulation structure part (best form 3). 遮音構成部の断面図（最良の形態３）。Sectional drawing of sound insulation structure part (best form 3). 遮音構成部の斜視図（最良の形態４）。The perspective view of the sound insulation structure part (best form 4). 遮音構成部の断面図（最良の形態４）。Sectional drawing (best form 4) of a sound insulation structure part. 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１乃至６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 1 thru | or 6 and a comparative example). 実験結果を示す表（最良の形態１乃至６及び比較例）。The table | surface which shows an experimental result (best form 1 thru | or 6 and a comparative example). 実験結果を示すグラフ（最良の形態１乃至６及び比較例）。The graph which shows an experimental result (best form 1 thru | or 6 and a comparative example). 実験結果を示すグラフ（最良の形態１乃至６及び比較例）。The graph which shows an experimental result (best form 1 thru | or 6 and a comparative example). 遮音構成部を示す図（最良の形態７）。The figure which shows a sound-insulation structure part (best form 7). 遮音構成部を示す図（最良の形態７）。The figure which shows a sound-insulation structure part (best form 7). 遮音構成部の他例を示す図（最良の形態７）。The figure which shows the other example of a sound-insulation structure part (best form 7). マンションの一戸を示す断面図（最良の形態８）。Sectional drawing which shows one house of an apartment (the best form 8). マンションの一戸を示す断面図（最良の形態９）。Sectional drawing which shows the one house of an apartment (the best form 9). マンションの一戸を示す断面図（最良の形態１０）。Sectional drawing which shows the one house of an apartment (best form 10). 遮音構成部を示す斜視図（最良の形態１１）。The perspective view which shows a sound-insulation structure part (best form 11). マンションの一戸を示す断面図（最良の形態１３）。Sectional drawing which shows the one house of an apartment (best form 13). マンションの一戸を示す断面図（最良の形態１４）。Sectional drawing which shows the one house of an apartment (best form 14).

符号の説明Explanation of symbols

５ トイレ室（特定の部屋）、１０ 遮音ダクト、１３ 床板、
１３Ａ 床板の端面、３１ 排気手段、３１Ａ 排気装置、３２ 空気供給孔、３３ 天井裏空間、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、６５ 遮音経路、６６ 蛇行路、
９５ 一端開放口、９６ 他端開放口、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、Ｓ 隙間。 5 Toilet room (specific room), 10 sound insulation duct, 13 floor board,
13A End face of floor board, 31 Exhaust means, 31A Exhaust device, 32 Air supply hole, 33 Ceiling space, 35 Underfloor space, 41 Entrance / exit, 45 Shut off means,
51 air intake hole, 60 air flow path, 65 sound insulation path, 66 meander path,
95 one end opening, 96 other end opening, 100 sound insulation component, 102 inner cylinder,
103 outer cylinder, 104 lid, 111 air layer, 115 front perforated cylinder,
116 rear perforated cylindrical part, 118 holes, 120 sound absorbing material part, 121 sound absorbing material storage part,
122 Sound absorbing material, S gap.

Claims (4)

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、トイレ室内と床下空間とに跨って貫通する空気供給孔と、廊下と床下空間とに跨って貫通する空気取込孔と、床下空間に設置された遮音ダクトとを備え、
遮音ダクトは、一端開放口と空気供給孔とが互いに繋がれ、他端開放口と空気取込孔とが互いに繋がれたことによって、トイレ室内と廊下とを繋ぐ遮音経路を形成したことを特徴とする建物。 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 A blocking means for blocking, an air supply hole penetrating across the toilet room and the underfloor space , an air intake hole penetrating across the corridor and the underfloor space, and a sound insulation duct installed in the underfloor space ,
The sound insulation duct is characterized in that a sound insulation path that connects the toilet room and the hallway is formed by connecting one end opening and the air supply hole to each other and connecting the other end opening and the air intake hole to each other. And a building. 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、トイレ室内と天井裏空間とに跨って貫通する空気供給孔と、廊下と天井裏空間とに跨って貫通する空気取込孔と、天井裏空間に設置された遮音ダクトとを備え、
遮音ダクトは、一端開放口と空気供給孔とが互いに繋がれ、他端開放口と空気取込孔とが互いに繋がれたことによって、トイレ室内と廊下とを繋ぐ遮音経路を形成したことを特徴とする建物。 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 Blocking means for blocking, an air supply hole penetrating the toilet room and the ceiling space , an air intake hole penetrating the hallway and the ceiling space, and a sound insulation duct installed in the ceiling space With
The sound insulation duct is characterized in that a sound insulation path that connects the toilet room and the hallway is formed by connecting one end opening and the air supply hole to each other and connecting the other end opening and the air intake hole to each other. And a building. 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、内筒体は、筒の内部と空気層とに跨って貫通する複数の孔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; 2. An air layer surrounded by a body, an inner cylindrical body, and a closing body, wherein the inner cylindrical body includes a plurality of holes penetrating through the inside of the cylinder and the air layer. Or the building of Claim 2 . 遮音ダクトは遮音構成部を備え、遮音構成部は、音を通過させる蛇行路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。 Sound insulation duct has a sound insulating structure section, the sound insulating structure section, building according to claim 1 or claim 2, further comprising a tortuous path for passing sound.
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