JPS63297646A - Sound absorbing structure - Google Patents
Sound absorbing structureInfo
- Publication number
- JPS63297646A JPS63297646A JP62132950A JP13295087A JPS63297646A JP S63297646 A JPS63297646 A JP S63297646A JP 62132950 A JP62132950 A JP 62132950A JP 13295087 A JP13295087 A JP 13295087A JP S63297646 A JPS63297646 A JP S63297646A
- Authority
- JP
- Japan
- Prior art keywords
- sound
- sound absorbing
- absorbing material
- absorbing structure
- porous
- 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.)
- Pending
Links
- 239000011358 absorbing material Substances 0.000 claims description 42
- 238000010521 absorption reaction Methods 0.000 claims description 14
- 239000011148 porous material Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 4
- 239000002847 sound insulator Substances 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 210000001520 comb Anatomy 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 201000003144 pneumothorax Diseases 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、建築構造物の天井、壁体や機械等の防高カバ
ー等に用いられる吸音ｔＭ ｆｆｉ体に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sound absorbing tMffi body used for ceilings and walls of architectural structures, high-proof covers for machines, etc.
（従来の技術）
従来、家屋、工場等の天井材や＆Ｊ祠、機械等の騒８カ
バーの内張り材、高速道路、鉄道等の防音壁、車両のエ
ンジンアンダーカバーやボンネット内去り材、その他各
種騒Ｂ源に対する防？３ Ｉｎカバーに吸音構造体が広
く使用されている。(Conventional technology) Conventionally, ceiling materials for houses, factories, etc., &J shrines, lining materials for noise-covering machines, etc., soundproof walls for expressways, railways, etc., engine undercovers and bonnet removal materials for vehicles, and various other materials. Defense against the source of noise B? 3 Sound absorbing structures are widely used in In covers.
第４図は従来の一般的な吸音構造体の構造を示した断面
図である１１図中、１１はり本体等の剛性鴻名体であり
、この鴻洛体１１の表面から所廿の間隔ａを隔てて多孔
′Ｉ！Ｘ祠よりなる吸音材１２が配置されている。この
吸音材１２は、アルミニウムその他の金属粉末を焼結成
形したり、合成樹脂十オを射出成形、発泡処理′８によ
り成形したり、セラミックス材を焼成したり、有機質又
は無機質繊紺月を織成したり、或いはこれら材料を杓数
種組み会わせて、多孔質材を平板状に形成されたものＣ
ある。上記連８休１１と吸音体１２との間の中間位１３
は、通常空気層であるが、多孔質材の１′７さを１９ク
シで、空気層を設りずして成る構造も公知である、。FIG. 4 is a cross-sectional view showing the structure of a conventional general sound-absorbing structure. In FIG. Porous 'I! A sound absorbing material 12 made of X shrine is arranged. The sound absorbing material 12 is made by sintering aluminum or other metal powder, injection molding or foaming of synthetic resin, firing ceramic material, or weaving organic or inorganic fibers. or a porous material formed into a flat plate by combining several types of these materialsC
be. Intermediate position 13 between the above-mentioned 8 consecutive holidays 11 and the sound absorbing body 12
Generally, there is an air layer, but a structure in which the porous material is 1'7 in length and 19 combs without an air layer is also known.
しかしながら、上記のような従来の吸Ｆ１構造体に８５
いては、吸音材１２はＰ坦な板状体であり、遮７４休１
１の表面と平行に配置されＣいろ。従って、連名体１１
表面と吸と１祠１２の対向面との間隔、すなわち空気層
等の中間層１３の厚みａは一定である。However, in the conventional suction F1 structure as described above, 85
In this case, the sound absorbing material 12 is a P flat plate-like body, and the sound absorbing material 12 is
It is placed parallel to the surface of 1 and C color. Therefore, joint entity 11
The distance between the surface and the facing surface of the suction 12, ie, the thickness a of the intermediate layer 13 such as an air layer, is constant.
前記のように多孔質材により形成された吸音材１２の吸
音率は、吸音材材料の多孔率及び板Ｊ９によって左右さ
れ、多孔率、板１９が一定である場合は、前記空気層着
＝の中間層１３の厚みａによって最凸の吸音率で吸音で
きる音の周波数が移動することが一般に知られている。The sound absorption coefficient of the sound absorbing material 12 made of a porous material as described above depends on the porosity of the sound absorbing material and the plate J9.If the porosity and the plate 19 are constant, the air layer adhesion = It is generally known that the frequency of sound that can be absorbed by the most convex sound absorption coefficient changes depending on the thickness a of the intermediate layer 13.
従って、上記のように一定の板状吸音材１２が使用され
、しかし中間層１３の厚みａが一定な従来の吸音構造体
（おいては、最高吸音率で吸音できる音はきわめて狭い
周波数範囲に限られてしまい、他の周波数領域において
は充分な吸音性能を発揮できない問題点がある。その上
、上記のように吸音材１２が平坦な板状で使用される吸
音Ｍ４造休においては、外観意匠的にも美観を充分発揮
できない欠点もある。Therefore, as described above, in the conventional sound-absorbing structure in which a certain plate-shaped sound-absorbing material 12 is used, but the thickness a of the intermediate layer 13 is constant, the sound that can be absorbed at the maximum sound absorption coefficient is in an extremely narrow frequency range. Therefore, there is a problem that sufficient sound absorption performance cannot be exhibited in other frequency ranges.Furthermore, as mentioned above, in the sound absorbing M4 construction in which the sound absorbing material 12 is used in the form of a flat plate, the appearance There are also some drawbacks in terms of design, such as not being able to fully demonstrate its beauty.
本発明は以上のような従来の吸音構造体の問題点に鑑み
、広範囲の周波数帯域にｎっで広い吸ａ性能を発揮する
ことができ、しかも外観意匠的にも優れた吸音構造体を
提供しようとするものである。In view of the problems of conventional sound absorbing structures as described above, the present invention provides a sound absorbing structure that can exhibit a wide range of aperture absorption performance over a wide range of frequency bands and also has an excellent external design. This is what I am trying to do.
上記の目的を達成するＩζめ、本発明の吸＆構造体は、
遮音体と、多孔質材により形成されｈｉＪ記鴻呂体の表
面から所要間隔離れて配置された吸音材とからなる吸音
８４造体にＪ３いて、前記吸音材の遮音体に対向する表
面と遮音体表面との間隔が複数種となるようにｒ）ｆｆ
記吸音材を成形し、さらに、前記吸音材の流れ抵抗を１
５〜１８０ｄｙｎ −ｓ／ｃ＝（レイルズ）の間とした
ことを特徴とするものである。To achieve the above object, the suction & structure of the present invention is as follows:
J3 is in a sound-absorbing 84 structure consisting of a sound-insulating body and a sound-absorbing material formed of a porous material and placed at a required distance from the surface of the hiJ-Konro body, and the surface of the sound-absorbing material facing the sound insulating body and the sound insulation are r) ff so that there are multiple types of distance from the body surface.
The sound absorbing material is molded, and the flow resistance of the sound absorbing material is reduced to 1.
It is characterized by being between 5 and 180 dyn-s/c=(Rails).
以上のように構成された本発明の吸音構造体においては
、多孔質材により形成された吸音材の方面と遮音体表面
との間隔が一定でなく、複数種となっている。従って、
吸ｇ材／遮合体間の９気胸等の中間層は、一定ｌワみで
なく複数種に変化した厚みを有しており、しかも吸音材
の流れ抵抗値を定めることによって、各種の音波周波数
について最高の吸音率を得ることができる。前記吸音材
の流れ抵抗値を１５〜１８０ ｄｙｎ−Ｓ／ｌｉ （Ｌ
／イルズ）としたため、この吸ｇ構造体はきわめて広い
周波数範囲の音を最高の吸音率で吸音することができる
。また、吸音材が平坦な板状でなく各種の複雑な形状に
成形されるので、吸音構造体を施′［する埋込ｖＩＪ壁
面等に好ましい意匠的外観が与えられる。In the sound absorbing structure of the present invention configured as described above, the distance between the side of the sound absorbing material made of a porous material and the surface of the sound insulating body is not constant, but has a plurality of types. Therefore,
The intermediate layer between the absorbent material and the shielding material, such as pneumothorax, does not have a constant thickness, but has multiple thicknesses, and by determining the flow resistance value of the sound absorbing material, various sound wave frequencies can be adjusted. The highest sound absorption coefficient can be obtained for The flow resistance value of the sound absorbing material is set to 15 to 180 dyn-S/li (L
/ils), this g-absorbing structure can absorb sound in an extremely wide frequency range with the highest sound absorption coefficient. Further, since the sound absorbing material is not formed into a flat plate shape but into various complicated shapes, a desirable design appearance can be given to the wall surface of the embedded VIJ on which the sound absorbing structure is applied.
以下、図面に示した実施例により、本発明の構成をさら
に詳細に説明する。EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention will be explained in more detail with reference to the embodiments shown in the drawings.
第１図は本発明の吸音構造体の一実施例を示した所面斜
視図である。図中、１は壁面等の遮音体で、この遮音体
１に金属多孔質焼結材により形成された吸音材２が取り
付ジノられている。この吸？η材２は図に見られるよう
に、平坦な板状でなく複雑な変形形状に機械的に成形側
１を施されたちのである。FIG. 1 is a top perspective view showing one embodiment of the sound absorbing structure of the present invention. In the figure, reference numeral 1 denotes a sound insulating body such as a wall surface, and a sound absorbing material 2 made of a porous sintered metal material is attached to this sound insulating body 1. This suck? As can be seen in the figure, the η material 2 is not a flat plate but has a complex deformed shape mechanically formed on the forming side 1.
吸音材２は、遮音体１との間に中間層である空気層３を
隔て、ビス４．４によって遮音体１に取り付けられてＪ
３す、吸音材２の内表面と遮音体１０表面との間隔、す
なわち空気層３の厚みは一様ではなく、ａｌ、ａ２．ａ
３．・・・等、複数種どなっている。なお、本図示例に
おいては、遮＆体１は突起部５を有しているが、平坦な
ものであってもよいことは、いうまでもない。また、吸
音材２は、上記のように金属多孔質焼結材で形成された
ものに限らず、吸音材の流れ抵抗値が１５〜１８０レイ
ルズの範囲であるならば１）ｌ′ｊ記従来技術について
説明した合成樹脂材、セラミック材等、各種の多孔質材
料で形成されたもの及びその複合体を使用することがで
きる。The sound absorbing material 2 is attached to the sound insulator 1 with screws 4.4, with an air layer 3 as an intermediate layer between it and the sound insulator 1.
3. The distance between the inner surface of the sound absorbing material 2 and the surface of the sound insulator 10, that is, the thickness of the air layer 3 is not uniform; a
3. ...etc., there are multiple types. In the illustrated example, the shielding body 1 has the protrusion 5, but it goes without saying that it may be flat. Furthermore, the sound absorbing material 2 is not limited to being formed of a metal porous sintered material as described above, but if the flow resistance value of the sound absorbing material is in the range of 15 to 180 rails, 1) l'j conventional It is possible to use materials made of various porous materials and composites thereof, such as the synthetic resin materials and ceramic materials described in the technology.
そして、本発明においては、前記のように吸音材２と遮
音体１との間隔を複数種としたことにより、吸音材２の
多孔質材ｙ３＋の１汲音因ｆである流れ）氏抗が１５レ
イルズ〜１８０レイルズとなろ、上うな前記吸音材２を
使用した構造体にする。その理由を以）に説明する。In the present invention, by providing a plurality of spacings between the sound absorbing material 2 and the sound insulating material 1 as described above, the flow (flow resistance) which is the cause of the noise of the porous material y3+ of the sound absorbing material 2 is reduced. 15 to 180 rails, the structure uses the above-mentioned sound absorbing material 2. The reason for this will be explained below.
多孔質材料の流れ抵抗値は次式によって求めることがで
きる。The flow resistance value of a porous material can be determined by the following equation.
ΔＰ：差圧（ｄＶｎ１０＋ｉ）
Ａ ：多孔体測定面積（ｃｒＡ ）
Ｑ ：通気流ｆｆ１（ＣＩＩｉ／ｓ）
第２図は、この流れ抵抗＋ａ （レイルズ）と吸音率（
％）の関係を音波の各周波数について示した線図である
。詳しくは、多孔質材の；りさ又は多孔’ｔ１月と空気
層との層厚が５０調の場合を示すものであり、この図に
見られるように、各周波数とも、１５レイルズ〜１８０
レイルズの流れ抵抗値の範囲において、実用上最高の吸
音率乃至比較的高い値の吸音率を示している。よって、
本発明においては、吸音材２を変形形状に成形加工して
吸音材２と遮音体１との間隔、すなわち空気層等の中間
層３の厚みをａｌ 、ａ２＋ ａ３．・・・等各種に変
化させることによって一般的に知られている吸音作用で
ある吸音材の厚さ若しくは、吸音材と空気層の厚さが厚
いほど低周波側に吸音し、又厚さが小さくなるなど高周
波側に吸音率のピークが移動することが知られている。ΔP: Differential pressure (dVn10+i) A: Porous body measurement area (crA) Q: Ventilation flow ff1 (CIIi/s) Figure 2 shows this flow resistance +a (Rails) and sound absorption coefficient (
%) for each frequency of a sound wave. In detail, the figure shows the case where the layer thickness between the porous material and the air layer is 50 tones, and as seen in this figure, each frequency ranges from 15 to 180 tones.
Within the range of flow resistance values of Rails, the sound absorption coefficients range from the highest in practice to a relatively high value. Therefore,
In the present invention, the sound absorbing material 2 is molded into a deformed shape so that the distance between the sound absorbing material 2 and the sound insulating material 1, that is, the thickness of the intermediate layer 3 such as an air layer, is set to al, a2+a3. The thickness of the sound-absorbing material, which is generally known as a sound-absorbing effect, can be changed in various ways, or the thicker the sound-absorbing material and the air layer, the more the sound is absorbed toward the lower frequency side. It is known that the peak of the sound absorption coefficient shifts to the higher frequency side as the frequency decreases.
従って吸音構造としては流れ抵抗値を１５〜１８０レイ
ルズの範囲の吸音材、又は吸音材の厚さや空気層との組
合せＲＡ造、特に本発明に於いては吸音材２と遮＆体１
との間隔を複数ｆ＋ｆＩとすることによって、本発明の
［コ的を達成することが出来る。Therefore, as a sound absorbing structure, a sound absorbing material with a flow resistance value in the range of 15 to 180 rails, or a combination of the thickness of the sound absorbing material and an air layer, RA structure, especially in the present invention, the sound absorbing material 2 and the shielding body 1 are used.
The objective of the present invention can be achieved by setting the distance between the two points to a plurality of f+fI.
なお、本発明における吸音材２の成形形状は、多孔質材
料の機械的付置に応じてロール加工、型押用Ｌｒｆによ
り、円状、だ円状、角状等、任意の形状に成形したもの
で良く、第１図の実施例に示したような台形状に限定さ
れるものではない。例えば、第３図に示すように、吸音
材２０表面に大小の帽状突起６．６′・・・を設けて外
観意匠的効果を発揮ざゼることも可能である。In addition, the molded shape of the sound absorbing material 2 in the present invention is formed into an arbitrary shape such as a circular shape, an elliptical shape, a square shape, etc. by roll processing and embossing Lrf depending on the mechanical placement of the porous material. It is not limited to the trapezoidal shape shown in the embodiment of FIG. For example, as shown in FIG. 3, large and small cap-shaped protrusions 6, 6', .
以上の説明より明らかなように、本発明の吸音構造体は
、多孔質材料よりなる吸音材をｌ形状に成形加工して吸
音月／鴻音体間の間隔を複数種とし、特定の周波数の音
だけでなく各種の周波数音に対して高度の吸音率が得ら
れるように構成されたものであるから、広い周波数帯域
にＤっで高い吸音、率を発揮づることかでき、「築構迄
物の天井、壁体や道路の防音壁、或いは各種機械のｇ音
カバー等に使用して優れた防音効果が得られる。As is clear from the above description, the sound-absorbing structure of the present invention has a sound-absorbing material made of a porous material molded into an L-shape, with multiple types of spacing between the sound-absorbing moon and the sound-absorbing body, and a specific frequency. Since it is constructed to have a high sound absorption coefficient not only for sound but also for various frequency sounds, it can exhibit high sound absorption and coefficient in a wide frequency band, Excellent soundproofing effects can be obtained by using it for ceilings of objects, soundproofing walls for walls and roads, or g-sound covers for various machines.
また、吸音材の成形加［により、外観上の意匠を重視さ
れる建築構造等の美観を向上させることが可能である。Furthermore, by molding the sound absorbing material, it is possible to improve the aesthetic appearance of architectural structures, etc., where appearance design is important.
さらに、吸音材を壁面等の遮音体に取り付けるのに、従
来のようにチャンネル材等を使用することなく、吸音材
の形状を利用して直接ビス等で取り付けるようにするこ
とが可能であり（第１図参照）、また、そのビス等が表
面に現われないようにして外観を優れたものとづること
もできる。Furthermore, when attaching the sound absorbing material to a sound insulating material such as a wall surface, it is possible to use the shape of the sound absorbing material and attach it directly with screws, etc., without using channel materials as in the past. (See Figure 1), and the appearance can be improved by preventing the screws from appearing on the surface.
さらにまた、壁面等の遮音体が平坦でなく突起部等を有
する形状のものである場合、本発明の吸音構造体を使用
すれば設計上これらの突起部等を回避して施工できる効
果もある。Furthermore, if the sound insulating material such as a wall surface is not flat and has a shape with protrusions, etc., the use of the sound absorbing structure of the present invention has the effect of being able to avoid these protrusions during design. .
第１図は本発明の吸音構造体の一実施例を示す断面斜視
図、第２図は合波の各周波数について流れ抵抗（直と吸
音率の課１係を示づグラフ図、第３図は本発明の吸音構
造体の吸音材の伯の実施例を示寸断面斜視図、第４図は
従来の吸音構造体の一例を丞す断面図である。
１・・・遮音体、
２・・・吸音材、
３・・・中間層（空気層）、
ａｌ 、 ａ２ 、 ａ３ 、・・・ 用間隔。
特許出願人 工ヌデーシー株式会社第１図
第２図Fig. 1 is a cross-sectional perspective view showing one embodiment of the sound absorbing structure of the present invention, Fig. 2 is a graph showing the flow resistance (direction and the coefficient 1 of sound absorption coefficient) for each frequency of multiplexing, and Fig. 3 4 is a sectional perspective view showing an embodiment of the sound absorbing material of the sound absorbing structure of the present invention, and FIG. 4 is a cross sectional view of an example of the conventional sound absorbing structure. 1. Sound insulation body, 2. ... Sound absorbing material, 3... Intermediate layer (air layer), al, a2, a3, ... spacing. Patent applicant NDC Co., Ltd. Figure 1 Figure 2
Claims (1)
ら所要間隔離れて配置された吸音材とからなる吸音構造
体において、前記吸音材と遮音体に対向する表面と遮音
体表面との間隔が複数種となるように前記吸音材が成形
されており、前記吸音材の流れ抵抗を１５〜１８０ｄｙ
ｎ・ｓ／ｃｍ＾３（レイルズ）の間であることを特徴と
する吸音構造体。In a sound-absorbing structure comprising a sound-insulating body and a sound-absorbing material formed of a porous material and arranged at a required distance from the surface of the sound-insulating body, the distance between the surface facing the sound-absorbing material and the sound-insulating body and the surface of the sound-insulating body The sound absorbing material is molded so that there are multiple types, and the flow resistance of the sound absorbing material is 15 to 180 dy.
A sound-absorbing structure characterized in that the sound absorption is between n·s/cm^3 (Rails).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62132950A JPS63297646A (en) | 1987-05-29 | 1987-05-29 | Sound absorbing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62132950A JPS63297646A (en) | 1987-05-29 | 1987-05-29 | Sound absorbing structure |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5280444A Division JPH06299619A (en) | 1993-10-14 | 1993-10-14 | Sound absorbing structural body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63297646A true JPS63297646A (en) | 1988-12-05 |
Family
ID=15093286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62132950A Pending JPS63297646A (en) | 1987-05-29 | 1987-05-29 | Sound absorbing structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63297646A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5598510A (en) * | 1979-01-20 | 1980-07-26 | Hideo Fukuda | Soundproof panel with corrugated sound absorbing core and sound wave insulating board |
-
1987
- 1987-05-29 JP JP62132950A patent/JPS63297646A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5598510A (en) * | 1979-01-20 | 1980-07-26 | Hideo Fukuda | Soundproof panel with corrugated sound absorbing core and sound wave insulating board |
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