JPS624094Y2 - - Google Patents
Info
- Publication number
- JPS624094Y2 JPS624094Y2 JP1980153285U JP15328580U JPS624094Y2 JP S624094 Y2 JPS624094 Y2 JP S624094Y2 JP 1980153285 U JP1980153285 U JP 1980153285U JP 15328580 U JP15328580 U JP 15328580U JP S624094 Y2 JPS624094 Y2 JP S624094Y2
- Authority
- JP
- Japan
- Prior art keywords
- sound
- wall
- absorbing
- sound absorbing
- absorbing material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011358 absorbing material Substances 0.000 claims description 23
- 239000002131 composite material Substances 0.000 claims description 16
- 239000011120 plywood Substances 0.000 claims description 7
- 239000011491 glass wool Substances 0.000 claims description 5
- 239000011162 core material Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 description 24
- 230000000694 effects Effects 0.000 description 8
- 102100027340 Slit homolog 2 protein Human genes 0.000 description 4
- 101710133576 Slit homolog 2 protein Proteins 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- -1 hardboard Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
【考案の詳細な説明】
この考案は、スタジオ、ホール等において室内
吸音を目的として用いる壁面構造に関するもので
ある。[Detailed Description of the Invention] This invention relates to a wall structure used for indoor sound absorption in studios, halls, etc.
スタジオ、ホール等においては、初期反射音、
残響音等を制御するため、広い周波数帯域にわた
つて大きな吸音力を有する壁面構造が必要とされ
る。 In studios, halls, etc., early reflection sounds,
In order to control reverberation, etc., a wall structure is required that has large sound absorbing power over a wide frequency band.
従来からよく用いられている吸音構造として
は、
(a) グラスウール積層構造、サウンドトラツプ構
造。 Sound absorbing structures that have been commonly used include (a) glass wool laminated structure and sound trap structure.
(b) 共鳴吸音構造（スリツト、有孔板等）。(b) Resonant sound absorbing structures (slits, perforated plates, etc.).
がある。しかし、前者は主として中・高音域吸音
構造であり、低音域までを含む広帯域にわたつて
高い吸音率を得るには大きな背後空気層を必要と
する。また、後者は設計によつていずれの帯域の
吸音も可能であることから主として低音域の吸音
のために使用されるが、有効な吸音力を有する周
波数範囲が狭く、また、一度吸音された音の一部
が時間遅れを伴つて壁面から室内へ再び放射され
る、いわゆる再放射によつて室内の音場を乱す場
合がある。There is. However, the former is mainly a sound absorption structure in the middle and high ranges, and requires a large rear air layer to obtain a high sound absorption coefficient over a wide range including low ranges. In addition, the latter is mainly used for sound absorption in the low frequency range because it is capable of absorbing sound in any band depending on its design, but the frequency range in which it has effective sound absorption power is narrow, and once the sound has been absorbed, the A part of the sound is radiated back into the room from the wall surface with a time delay, so-called re-radiation, which may disturb the indoor sound field.
この考案は、上記(a)構造の背後に(b)構造を設け
ることによつて上記従来の問題点を解消したもの
で、広帯域にわたつて高い吸音効果を得ることが
できる複合吸音壁を提供することを目的とする。
以下この考案を図面を参照して説明する。 This idea solves the above conventional problems by providing the (b) structure behind the (a) structure, and provides a composite sound-absorbing wall that can obtain high sound-absorbing effects over a wide band. The purpose is to
This invention will be explained below with reference to the drawings.
第１図はこの考案に係る複合吸音壁の一実施例
を示すもので、図中１は壁体であり、ここでは、
内装吸音層の起点となる剛性および遮音性をもつ
部材（天井なども含む）のことで、一般的には構
造壁体あるいは内部遮音層と呼ばれる軽量壁
（例、プラスターボード）等を意味する。この壁
体１の前面（この図で左方）には、フランジ７に
よりスリツト２を形成した板状部材３が壁体１と
の間に空気層４を形成して設けられている。ま
た、上記板状部材３の前面には、グラスウールや
ロツクウール等の多孔質材料からなる吸音材５が
その長さ方向を板状部材３の面に対し交互に傾斜
させて配設されるとともに、吸音材５の前面には
表面クロス６が張られている。吸音材５は多孔質
材料のみで構成されることもあるが、本例では合
板１０を芯材として両側からグラスウールを装着
した構造（いわゆるサウンドトラツプ）となつて
いる。なお、板状部材３としては、木材、ハード
ボード、アスベスト、アルミニウム等の金属、プ
ラスチツク等の材料が用いられる。 FIG. 1 shows an example of a composite sound-absorbing wall according to this invention. In the figure, 1 is a wall body, and here,
A rigid and sound-insulating member (including ceilings, etc.) that serves as the starting point for an interior sound-absorbing layer, and generally refers to a lightweight wall (e.g., plasterboard) called a structural wall or internal sound-insulating layer. A plate-shaped member 3 having a slit 2 formed by a flange 7 is provided on the front surface of the wall 1 (left side in this figure), with an air layer 4 formed between the plate member 3 and the wall 1. In addition, sound absorbing materials 5 made of a porous material such as glass wool or rock wool are arranged on the front surface of the plate member 3 so that their length directions are alternately inclined with respect to the surface of the plate member 3. A surface cloth 6 is stretched on the front surface of the sound absorbing material 5. The sound absorbing material 5 may be composed of only a porous material, but in this example, it has a structure (a so-called sound trap) in which a plywood 10 is used as a core material and glass wool is attached from both sides. Note that as the plate member 3, materials such as wood, hardboard, asbestos, metal such as aluminum, and plastic are used.
次に上記のように構成されたこの考案に係る複
合吸音壁の作用を説明する。 Next, the operation of the composite sound absorbing wall according to the invention constructed as described above will be explained.
室内で発生した音は、表面クロス６を墜り抜け
てこの考案に係る複合吸音壁に侵入するが、ま
ず、吸音材５によりその中・高域成分を吸収され
る。この部分において吸収されなかつた低音域成
分は吸音材５の部分を通り抜けて板状部材３に至
り、そのスリツト２によつて吸音される。この場
合、板状部材３の部分では再放射音が発生する
が、板状部材３からの距離減衰と吸音材５の吸音
効果によつてほとんど室内に戻ることはない。 Sound generated indoors passes through the surface cloth 6 and enters the composite sound-absorbing wall according to this invention, but the mid-range and high-frequency components are first absorbed by the sound-absorbing material 5. The low frequency components that are not absorbed in this portion pass through the sound absorbing material 5 and reach the plate member 3, where the sound is absorbed by the slit 2. In this case, re-radiated sound is generated at the plate member 3, but due to distance attenuation from the plate member 3 and the sound absorption effect of the sound absorbing material 5, it hardly returns to the room.
ところで、上記実施例における関係寸法を、壁
体１と板状部材３の離間距離（空気層４の大き
さ）L4＝400mm、スリツト２の開口幅Ｓ＝40mm、
スリツト２のピツチP2＝500mm、板状部材３と表
面クロス６の離間距離L6＝600mm、吸音材５の長
さL5＝500mmmm、フランジ７の奥行き方向の幅L7
＝100mm、吸音材５の配設ピツチP5＝300mm、に設
定して実験したところ、第２図に示すような結果
が得られた。 By the way, the related dimensions in the above embodiment are as follows: distance between wall 1 and plate member 3 (size of air layer 4) L 4 =400 mm, opening width of slit 2 S = 40 mm,
Pitch of slit 2 P 2 = 500 mm, distance between plate member 3 and surface cross 6 L 6 = 600 mm, length of sound absorbing material 5 L 5 = 500 mm, width of flange 7 in depth direction L 7
When an experiment was conducted by setting the pitch P 5 of the sound absorbing material 5 to 300 mm, the results shown in FIG. 2 were obtained.
すなわち、第２図において実線（）は、この
考案に係る複合吸音壁の吸音特性を示すもので、
63〜125Hzの低音域で0.6〜0.65の吸音率を、また
250〜8000Hzの帯域で0.75〜0.95の吸音率を示し
ている。また、第２図において１点鎖線（）は
上記複合吸音壁から板状部材３を省いた従来のサ
ウンドトラツプ構造の吸音壁の吸音特性を示すも
ので、この吸音壁の場合は63〜125Hzの低音域で
0.3〜0.50の吸音率を示すに留まつている。 That is, in FIG. 2, the solid line () indicates the sound absorption characteristics of the composite sound absorption wall according to this invention.
Sound absorption coefficient of 0.6-0.65 in the bass range of 63-125Hz, and
It shows a sound absorption coefficient of 0.75 to 0.95 in the 250 to 8000 Hz band. In addition, in Fig. 2, the dashed line () indicates the sound absorption characteristics of the sound absorption wall of the conventional sound trap structure in which the plate member 3 is omitted from the composite sound absorption wall. in the low range of
It only shows a sound absorption coefficient of 0.3 to 0.50.
更にまた、第２図において破線（）は上記複
合吸音壁から吸音材５を省いた従来のスリツト壁
の吸音特性を示すもので、500〜8000Hzの中・高
音域で吸音率が大きく減少している。 Furthermore, in Fig. 2, the broken line () shows the sound absorption characteristics of the conventional slit wall in which the sound absorbing material 5 is omitted from the composite sound absorbing wall, and the sound absorption coefficient is greatly reduced in the medium and high frequency range of 500 to 8000 Hz. There is.
上記のことから、この考案に係る複合吸音壁は
従来のサウンドトラツプ構造、或はスリツト構造
のいずれの吸音壁よりも良好な吸音率をあげてい
ることが理解される。 From the above, it is understood that the composite sound absorption wall according to this invention has a better sound absorption coefficient than either the conventional sound trap structure or slit structure sound absorption wall.
この考案に係る複合吸音壁には第１図のもの以
外に種々の変形例がある。そのうちの代表的数例
を第３図ないし第４図を参照して以下に説明す
る。 The composite sound absorbing wall according to this invention has various modifications other than the one shown in FIG. Some representative examples will be explained below with reference to FIGS. 3 and 4.
〔第３図の複合吸音壁〕
スリツト構造が、開口部２′（通常円形）によ
る有孔板構造に置き代つただけで、他は第１図の
ものとまつたく同一である。[Composite sound absorbing wall of FIG. 3] The structure is exactly the same as that of FIG. 1 except that the slit structure is replaced by a perforated plate structure with openings 2' (usually circular).
〔第４図の複合吸音壁〕
共鳴構造の部分が単一または複数のヘルムホル
ツレゾネータ９によつて構成されている。他は第
１図と同様である。[Composite sound absorbing wall shown in FIG. 4] The resonant structure portion is constituted by a single or plural Helmholtz resonators 9. The rest is the same as in FIG.
なお、上記以外に多数の変形例があり、また、
第１図のものについて示した関係寸法は一例にす
ぎず、これに規定されるものでないことは言うま
でもない。 In addition, there are many variations other than the above, and
It goes without saying that the relative dimensions shown in FIG. 1 are merely examples and are not intended to be limiting.
以上説明したように、この考案による複合吸音
壁は、中・高音域を吸音材５により、また低音域
をスリツト２を有する板状部材３によつてそれぞ
れ吸音する構造であるので、従来のものに比べて
広帯域にわたつて大きな吸音率が得られる効果が
ある。また、板状部材３による再放射音は吸音材
５の部分を戻る間に吸音材５によつて吸収され、
実質的には再放射の影響がなくなるため、特に低
音域の改善に著しい長所がある。また、この考案
においては、低音域成分が、もともと中・高音域
成分の吸収領域である吸音材５の領域でも有効的
に吸収されるという作用効果がある。即ち、吸音
材５の主体はグラスウール等の多孔質材料からな
るが、芯材としての密質な合板１０を備えている
ため、この合板１０が低音域成分を散乱させる作
用を発揮する。しかもこの場合において、合板１
０は不平行のいわゆるジグザグ状の配置状態とな
つているから、低音域成分を散乱させる作用はさ
らに効果的なものとなり、これらの結果、この吸
音材５の領域においても低音域成分が吸収される
のである。したがつて、低音域成分は吸音材５の
領域及び板状部材３以後の領域の両方で吸収さ
れ、その分、吸音効率も向上することになる。こ
の意味からも、本考案では特に低音域の改善に著
しい長所があるといえるのである。勿論、広帯域
にわたつて大きな吸音率が得られるのは言うまで
もない。 As explained above, the composite sound absorbing wall according to this invention has a structure in which middle and high frequency ranges are absorbed by the sound absorbing material 5, and low frequency ranges are absorbed by the plate member 3 having slits 2, so it is different from the conventional one. It has the effect of obtaining a large sound absorption coefficient over a wide band compared to the conventional method. Further, the sound re-radiated by the plate member 3 is absorbed by the sound absorbing material 5 while returning to the sound absorbing material 5,
Since the effects of re-radiation are virtually eliminated, this has a remarkable advantage in improving the bass range in particular. Furthermore, this invention has the effect that low frequency components are effectively absorbed in the area of the sound absorbing material 5, which is originally an absorption area for middle and high frequency components. That is, although the sound absorbing material 5 is mainly made of a porous material such as glass wool, it is provided with a dense plywood 10 as a core material, so that this plywood 10 exhibits the effect of scattering low frequency components. Moreover, in this case, plywood 1
Since the sound absorbing material 5 is disposed in a so-called zigzag-like arrangement state, the effect of scattering low frequency components becomes even more effective, and as a result, low frequency components are also absorbed in the area of the sound absorbing material 5. It is. Therefore, the low frequency component is absorbed both in the area of the sound absorbing material 5 and in the area after the plate member 3, and the sound absorption efficiency is improved accordingly. In this sense, it can be said that the present invention has a remarkable advantage in improving the bass range in particular. Of course, it goes without saying that a large sound absorption coefficient can be obtained over a wide band.
なお、合板１０の特徴的効果についてさらに述
べておくと、この合板１０は吸音材５の形状を保
持する補強用芯材としての作用と低音域成分吸収
作用の両方の作用を発揮するので、壁体１から表
面クロス６までの空間の吸音領域としての効率的
利用、及び吸音材５の配設や位置決め等の作業性
向上等をも併せて図ることができる。 In addition, to further describe the characteristic effects of the plywood 10, the plywood 10 functions as both a reinforcing core material that maintains the shape of the sound absorbing material 5 and a function of absorbing low frequency components. It is also possible to efficiently utilize the space from the body 1 to the surface cloth 6 as a sound-absorbing area, and to improve the workability of arranging and positioning the sound-absorbing material 5.
第１図はこの考案に係る複合吸音壁の一実施例
を示す断面図、第２図は第１図の複合吸音壁と従
来の吸音壁等の吸音特性図、第３図ないし第４図
はこの考案に係る複合吸音壁の他の実施例を示す
断面図である。
１……壁体、２……スリツト、３……板状部
材、４……空気層、５……吸音材。
Fig. 1 is a cross-sectional view showing one embodiment of the composite sound-absorbing wall according to this invention, Fig. 2 is a sound absorption characteristic diagram of the composite sound-absorbing wall shown in Fig. 1 and a conventional sound-absorbing wall, etc., and Figs. 3 and 4 are FIG. 3 is a cross-sectional view showing another embodiment of the composite sound-absorbing wall according to the invention. 1...Wall body, 2...Slit, 3...Plate member, 4...Air layer, 5...Sound absorbing material.
Claims (1)
を形成して配設され、上記板状部材の前には、複
数枚の吸音材が互いに間隔を置きかつそれぞれ自
身の長さ方向を上記板状部材の面に対して交互に
傾斜させた不平行に配設され、しかもこれらの吸
音材は、合板を芯材とし両側からグラスウール等
の多孔質材料を装着した積層構造であることを特
徴とする複合吸音壁。 A plate-like member having slits is disposed in front of the wall to form an air layer, and in front of the plate-like member, a plurality of sound absorbing materials are spaced apart from each other and each has its own length direction set above the above. These sound-absorbing materials are arranged non-parallel to the surface of the plate-shaped member and are alternately inclined, and these sound-absorbing materials have a laminated structure with plywood as the core material and porous materials such as glass wool attached from both sides. Composite sound absorbing wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980153285U JPS624094Y2 (en) | 1980-10-27 | 1980-10-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980153285U JPS624094Y2 (en) | 1980-10-27 | 1980-10-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5777415U JPS5777415U (en) | 1982-05-13 |
| JPS624094Y2 true JPS624094Y2 (en) | 1987-01-29 |
Family
ID=29512543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980153285U Expired JPS624094Y2 (en) | 1980-10-27 | 1980-10-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS624094Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4628274B2 (en) * | 2006-01-26 | 2011-02-09 | 株式会社沖データ | Printer device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS544816U (en) * | 1977-06-14 | 1979-01-12 | ||
| JPS54154119A (en) * | 1978-05-25 | 1979-12-05 | Shimizu Construction Co Ltd | Wideeband sound absorbing wall |
-
1980
- 1980-10-27 JP JP1980153285U patent/JPS624094Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS544816U (en) * | 1977-06-14 | 1979-01-12 | ||
| JPS54154119A (en) * | 1978-05-25 | 1979-12-05 | Shimizu Construction Co Ltd | Wideeband sound absorbing wall |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5777415U (en) | 1982-05-13 |
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