JP2547927B2 - Resonance type sound absorbing and sound insulation panel - Google Patents
Resonance type sound absorbing and sound insulation panelInfo
- Publication number
- JP2547927B2 JP2547927B2 JP4250013A JP25001392A JP2547927B2 JP 2547927 B2 JP2547927 B2 JP 2547927B2 JP 4250013 A JP4250013 A JP 4250013A JP 25001392 A JP25001392 A JP 25001392A JP 2547927 B2 JP2547927 B2 JP 2547927B2
- Authority
- JP
- Japan
- Prior art keywords
- resonance
- sound
- sound absorbing
- wall portion
- chambers
- 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 - Lifetime
Links
Landscapes
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、共鳴型吸音・遮音パ
ネルにに関し、特に耐候性や耐久性に優れ、保守、点検
が不要で、しかも吸音性能が特に改善された共鳴型吸音
・遮音パネルに係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resonance type sound absorbing / insulating panel, and more particularly to a resonance type sound absorbing / insulating panel which has excellent weather resistance and durability, requires no maintenance or inspection, and has improved sound absorbing performance. It is related to.
【０００２】[0002]
【従来の技術】新幹線や高速道路などの防音対策として
防音壁が多用される。単一の防音壁の場合、その材料と
して大きな吸音率は必要ではなく、ある程度の透過損失
をもつものであればよいが、対向壁がある場合あるいは
車体自身が大きな反射体となる場合、騒音源側で多重反
射が起り、防音壁の回折効果が減少するので防音壁にも
吸音性能が要求される。吸音性防音壁はこれまで多数開
発されているが、遮音壁に吸音材を付加する方式がほと
んどである。防音壁は戸外に設置されるため、使用され
る吸音材は耐水性であることが不可欠で、耐候性、耐久
性に優れ、また当然優れた吸音性能も要求される。従
来、実用に供されてきた共鳴型吸音パネルの１種として
スリットパネルや穴あきパネルがある。これらのパネル
の吸音性能は例えば「建築音響工学ハンドブック」（技
報堂発行）Ｐ346〜Ｐ357にも示されているようにスリッ
ト＋空気層のものは吸音率は50％未満である。前記スリ
ット＋空気層にキャラコ、ロックウールや多孔質材料を
複合構成したものは防音パネルとして要求される80％以
上の吸音率を達成するが、耐候性に劣り防音壁としては
殆ど利用されていない。また、新幹線に実用されている
防音パネルは金属や樹脂製の多孔板とガラスウールまた
はロックウール等の吸音材に空気層を設けた構成であ
り、その枠は型鋼製、裏壁は遮音用コンクリート壁を利
用したものや、鋼板製である。このものは吸音性能に優
れるが、耐候性に劣るため、長期の性能維持や強度保持
に問題がある。また、無機の粒状体を接着剤により多孔
吸音ブロックにしたものや、焼結により吸音ブロックと
したものもあるが、吸音材の（埃等の）目詰まりによる
吸音性能の劣化を洗浄により除いて吸音性能を回復する
作業が面倒であるとともに、強度上や製造コストの点で
問題がある。2. Description of the Related Art Soundproof walls are often used as soundproofing measures for bullet trains and highways. In the case of a single soundproof wall, a large sound absorption coefficient is not required as its material, and any material with a certain transmission loss may be used, but if there is an opposing wall or if the vehicle body itself becomes a large reflector, a noise source Since multiple reflection occurs on the side and the diffraction effect of the soundproof wall is reduced, the soundproof wall is also required to have sound absorbing performance. Many sound-absorbing sound barriers have been developed so far, but most of them are a method of adding a sound-absorbing material to the sound-insulating wall. Since the soundproof wall is installed outdoors, it is essential that the sound absorbing material used is water resistant, and it is also required to have excellent weather resistance and durability, and of course excellent sound absorbing performance. Conventionally, there is a slit panel or a perforated panel as one type of resonance type sound absorbing panel that has been put to practical use. Regarding the sound absorbing performance of these panels, for example, as shown in "Handbook of Architectural Acoustic Engineering" (published by Gihodo) P346 to P357, the sound absorbing coefficient of the slit + air layer is less than 50%. The above-mentioned slit + air layer composed of a combination of charcoal, rock wool and porous material achieves a sound absorption coefficient of 80% or more, which is required for a soundproof panel, but is poor in weather resistance and is hardly used as a soundproof wall. . In addition, the soundproof panel that is practically used in the Shinkansen consists of a porous plate made of metal or resin and a sound absorbing material such as glass wool or rock wool provided with an air layer, the frame of which is made of shaped steel and the back wall is for sound insulation. It is made of steel or concrete wall. Although this material has excellent sound absorbing performance, it has poor weather resistance and thus has problems in long-term performance maintenance and strength retention. In addition, there are some inorganic particulate materials that are made into a porous sound absorption block with an adhesive, and some are made into a sound absorption block by sintering, but the deterioration of the sound absorption performance due to clogging of the sound absorbing material (dust etc.) is removed by cleaning. The work of recovering the sound absorbing performance is troublesome, and there are problems in terms of strength and manufacturing cost.
【０００３】[0003]
【発明が解決しようとする課題】これらの問題を解決す
るものとして、例えば特公昭52-38326号公報、実開平1-
76912号公報をあげることができる。しかしながら、こ
れらのものは、詳細な記述がないが、後述のこの発明の
実施例に示す結果から考察して、これらのものによる方
法では防音効率は50％程度であることが推定され、吸音
壁として実用に供し得ないものであると考えられる。し
たがって、実用に供するためには共鳴室内又は空洞内に
吸音性能に優れた充填材の併用や無機質多孔ブロックと
の併用が必要となる。また、特開昭61−191746号公報の
ものは共鳴型吸音体として、吸音効率90％以上の性能を
発揮する旨の開示がある。しかしながら、このものでは
基材のみの単独防音率は記述されていないが、基材のみ
の吸音効率は少なくても70％位であると、例えば「建築
用吸音材料」（技術書院発行）Ｐ112から推定される。
したがって、共鳴型単独の吸音効率ではない。また、こ
の基材は強度もなく製造コストも高くなる。As means for solving these problems, for example, Japanese Patent Publication No. 52-38326 and Japanese Utility Model Publication No. 1-
No. 76912 can be cited. However, although these are not described in detail, it is estimated from the results shown in the examples of the present invention described later that the method according to these methods has a soundproofing efficiency of about 50%. It is considered that it cannot be put to practical use. Therefore, for practical use, it is necessary to use a filler having excellent sound absorbing performance in the resonance chamber or in the cavity, or in combination with an inorganic porous block. Further, Japanese Patent Application Laid-Open No. 61-191746 discloses that a resonance type sound absorber exhibits a performance of sound absorption efficiency of 90% or more. However, this does not describe the independent soundproofing rate of the base material alone, but if the sound absorption efficiency of the base material alone is at least about 70%, for example, from "Sound Absorbing Materials for Buildings" (published by Technical Institute) P112 Presumed.
Therefore, it is not the sound absorption efficiency of the resonance type alone. Further, this base material has no strength and the manufacturing cost is high.
【０００４】そこでこの発明は、前記従来の吸音型防音
壁の問題点を解決するためになしたものであり、特に吸
音を必要とする周波数幅（帯域）に対応した複数の共鳴
室を有し、耐候性、耐久性に優れ、かつ品質が均一でし
かも施工性に優れ、また優れた吸音効率と遮音性能を合
わせもった共鳴型吸音・遮音パネルを提供することを目
的とする。Therefore, the present invention has been made in order to solve the problems of the conventional sound absorbing type soundproof wall, and particularly has a plurality of resonance chambers corresponding to a frequency width (band) requiring sound absorption. Another object of the present invention is to provide a resonance-type sound absorbing / insulating panel having excellent weather resistance and durability, uniform quality, excellent workability, and excellent sound absorbing efficiency and sound insulating performance.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成するた
め、請求項１の発明は、前記のような共鳴型吸音・遮音
パネルにおいて、共鳴室が同じ断面積のものが隣り合わ
ないように配列され、かつ表面壁部に吸音孔の深さを延
長するためのリップ状の突出部が設けられ、この突出部
によって延長される吸音孔の深さは共鳴室の断面積が大
きい場合には長く、小さい場合には短くなるように共鳴
室の断面積と対応した長さとなっていることを特徴とす
る。請求項２の発明は、請求項１の発明において、リッ
プ状の突出部が表面壁部の共鳴室側内面に形成されてい
ることを特徴とする。請求項３の発明は、請求項１の発
明において、リップ状の突出部が表面壁部の外面に形成
されていることを特徴とする。In order to achieve the above object, the invention of claim 1 is such that in the resonance type sound absorbing and sound insulating panel as described above, the resonance chambers are arranged so that those having the same sectional area are not adjacent to each other. In addition, the surface wall is provided with a lip-shaped protrusion for extending the depth of the sound absorbing hole, and the depth of the sound absorbing hole extended by this protrusion is long when the cross-sectional area of the resonance chamber is large. When the size is small, it has a length corresponding to the cross-sectional area of the resonance chamber so as to be short. The invention of claim 2 is characterized in that, in the invention of claim 1, the lip-shaped protrusion is formed on the inner surface of the surface wall portion on the resonance chamber side. A third aspect of the present invention is characterized in that, in the first aspect, the lip-shaped protrusion is formed on the outer surface of the surface wall.
【０００６】[0006]
【作用】要求される吸音周波数幅（帯域）の中より２種
類以上の異なった共鳴周波数の共鳴室を選定して、単位
パネル内では必ず大きさの異なる共鳴室を隣接させ、か
つ全ての種類の共鳴室を、より均一に分散させた配列と
することによって、単一種類共鳴室パネルの吸音率より
大幅に改善された吸音効果を得ることが可能となった。
また、要求される周波数を得るために、共鳴室の断面積
をより小さくし、代わりに吸音孔の深さを大きくした。
すなわち、吸音孔にリップ状の突出部を設けることによ
って、パネルの一定断面積内における共鳴室をより多く
配設することができ、吸音率の改善を図ることが可能と
なった。このリップ状の突出部は共鳴室の内側に設けて
も外側に設けても同じ効果があることがわかった。Operation: Select two or more kinds of resonance chambers having different resonance frequencies from the required sound absorption frequency width (band), make sure that the resonance chambers of different sizes are adjacent to each other in the unit panel, and By arranging the resonance chambers of (1) in a more evenly distributed manner, it is possible to obtain a sound absorption effect that is significantly improved over the sound absorption coefficient of a single-type resonance chamber panel.
In addition, in order to obtain the required frequency, the cross-sectional area of the resonance chamber was made smaller and the depth of the sound absorbing hole was made larger instead.
That is, by providing the lip-shaped protrusions in the sound absorbing holes, it is possible to arrange more resonance chambers within the constant cross-sectional area of the panel and improve the sound absorbing coefficient. It was found that this lip-shaped protrusion has the same effect whether it is provided inside or outside the resonance chamber.
【０００７】[0007]
【実施例】この発明の好ましい実施例のいくつかを図面
に基づいて説明する。図１，２は共鳴型吸音・遮音パネ
ルの第１実施例を示すもので、図１は一部を省略した横
置き状態の該パネルの斜視図、図２は該パネルの中間部
を省略した両端部の拡大断面図である。両図において１
は所定の幅Ｈ、厚みＴ、長さＬを有する板状の共鳴型吸
音・遮音パネルで、該パネルにはその底面壁部２と、こ
の底面壁部と相対向して配置された表面壁部３と、これ
ら底面壁部２と表面壁部３間にその面方向に所定間隔を
おいて配置された複数の仕切壁部４とにより吸音目標周
波数に合わせた２種類以上の異なる断面積の共鳴室５，
６，７が複数形成されている。この例では前記各部は一
体に形成されている。共鳴室５，６，７は同じ断面積の
ものが隣り合わないように配列されている。このように
共鳴室５，６，７の配列・組合せは必ず隣接するものは
異なる大きさのものが並べられる必要があるが、図示の
ものに限定されるものではない。図示の共鳴室の場合、
大中小の３種類からなっており、小共鳴室５は６個、中
共鳴室６は５個、大共鳴室７は４個の計15個（室）とな
っている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some preferred embodiments of the present invention will be described with reference to the drawings. 1 and 2 show a first embodiment of a resonance type sound absorbing / insulating panel. FIG. 1 is a perspective view of the panel in a horizontal state with a part omitted, and FIG. 2 omits an intermediate part of the panel. It is an expanded sectional view of both ends. 1 in both figures
Is a plate-shaped resonance-type sound absorbing / sound-insulating panel having a predetermined width H, thickness T, and length L. The panel has a bottom wall portion 2 and a surface wall disposed opposite to the bottom wall portion. By the portion 3 and the plurality of partition wall portions 4 arranged at a predetermined interval in the surface direction between the bottom wall portion 2 and the front surface wall portion 3, two or more different cross-sectional areas matched to the sound absorption target frequency are obtained. Resonance chamber 5,
A plurality of 6 and 7 are formed. In this example, the respective parts are integrally formed. The resonance chambers 5, 6, 7 are arranged so that those having the same cross-sectional area are not adjacent to each other. As described above, the resonance chambers 5, 6, and 7 must be arranged and combined so that adjacent ones have different sizes, but are not limited to the illustrated ones. In the case of the illustrated resonance chamber,
There are three types of large, medium, and small types. The small resonance chamber 5 is 6, the medium resonance chamber 6 is 5, and the large resonance chamber 7 is 4, which is a total of 15 chambers.
【０００８】表面壁部３には各共鳴室５，６，７と外部
とを連通するスリット形の吸音孔８，９，10が形成され
ている。また、表面壁部３の共鳴室６，７側内面には吸
音孔９，10の深さを延長するためのリップ状の突出部1
1，12が設けられている。この突出部11，12の突出量は
中大共鳴室６，７の必要共鳴周波数に合わせて定める。
尚、小共鳴箱５の要求周波数による突出量はゼロであ
り、表面壁部３と同一となっている。したがって、図示
例ではスリット形の吸音孔８，９，10の深さは順次小中
大共鳴室５，６，７に対応して大きくなっている。The surface wall 3 is provided with slit-shaped sound absorbing holes 8, 9 and 10 for communicating the resonance chambers 5, 6 and 7 with the outside. In addition, a lip-shaped protrusion 1 for extending the depth of the sound absorbing holes 9 and 10 is formed on the inner surface of the surface wall 3 on the side of the resonance chambers 6 and 7.
1 and 12 are provided. The amount of protrusion of the protrusions 11 and 12 is determined according to the required resonance frequency of the medium and large resonance chambers 6 and 7.
The amount of protrusion of the small resonance box 5 due to the required frequency is zero and is the same as that of the surface wall portion 3. Therefore, in the illustrated example, the depths of the slit-shaped sound absorbing holes 8, 9 and 10 gradually increase corresponding to the small, medium and large resonance chambers 5, 6 and 7.
【０００９】前記のような構造の吸音・遮音パネル１は
好ましくは繊維強化セメント、すなわち耐アルカリガラ
ス繊維または合成繊維を混入したセメントを主原料とし
て、これを押出し成形により連続的にブロック状の基体
にまず形成される。吸音・遮音パネル１を繊維強化セメ
ント製とすることによって、その材質の特性により表面
壁部３や仕切壁部４の厚さを可及的に薄くすることがで
きるとともに、押出し成形による連続成形が可能とな
り、量産できて製作コストが安価につく。次いで、吸音
・遮音パネル１はその成形された基体の表面壁部３にの
こ等による切断加工によりスリット形の吸音孔８，９，
10が形成され、共鳴型吸音・遮音パネル１として製作さ
れる。尚、スリット形の吸音孔８，９，10は前記加工の
他に押出し成形時に形成することもできる。The sound-absorbing / sound-insulating panel 1 having the above-mentioned structure is preferably a fiber-reinforced cement, that is, a cement mixed with alkali-resistant glass fibers or synthetic fibers as a main raw material, which is continuously extruded to form a block-shaped substrate. First formed. By making the sound-absorbing / sound-insulating panel 1 made of fiber reinforced cement, the thickness of the surface wall 3 and the partition wall 4 can be made as thin as possible due to the characteristics of the material, and continuous molding by extrusion molding can be performed. It becomes possible, mass production is possible, and the manufacturing cost is low. Next, the sound absorbing and sound insulating panel 1 has slit-shaped sound absorbing holes 8 and 9 formed by cutting the surface wall 3 of the molded substrate with a saw or the like.
10 is formed and is manufactured as a resonance type sound absorbing and sound insulating panel 1. The slit-shaped sound absorbing holes 8, 9 and 10 can be formed at the time of extrusion molding in addition to the above processing.
【００１０】図３は第２実施例を示す。この実施例の共
鳴型吸音・遮音パネル21は共鳴室25，26，27が大中小の
３種類からなっており、小共鳴室25は６個、中共鳴室26
は４個、大共鳴室27は３個の計13個（室）となった13室
型となっている。この例では一体型であるが、底面壁部
22、表面壁部23、仕切壁部24を別体で製作し、製作後に
組み立て固着することもできる。28，29，30は吸音孔、
31，32は表面壁部23の共鳴室26，27側内面に固着された
吸音孔29，30の深さを延長するためのリップ状の突出部
である。FIG. 3 shows a second embodiment. The resonance type sound absorbing / insulating panel 21 of this embodiment has three types of resonance chambers 25, 26 and 27, which are large, medium and small. The small resonance chamber 25 is 6 and the medium resonance chamber 26 is small.
There are four chambers, and the large resonance chamber 27 is three chambers, for a total of 13 chambers, which is a 13-chamber type. In this example, it is an integrated type, but the bottom wall
It is also possible to separately manufacture 22, the surface wall portion 23, and the partition wall portion 24, and assemble and fix them after the production. 28, 29, 30 are sound absorbing holes,
Reference numerals 31 and 32 are lip-shaped protrusions for extending the depth of the sound absorbing holes 29 and 30 fixed to the inner surfaces of the surface wall portion 23 on the side of the resonance chambers 26 and 27.
【００１１】図４は第３実施例を示す。この実施例の共
鳴型吸音・遮音パネル41は共鳴室45，46，47が大中小の
３種類からなっており、小共鳴室45は４個、中共鳴室46
は３個、大共鳴室47は３個の計10個（室）となった10室
型となっている。42は底面壁部、43は表面壁部、44は仕
切壁部であり、また48，49，50は吸音孔、51，52は表面
壁部43の共鳴室46，47側内面に設けられた吸音孔59，60
の深さを延長するためのリップ状の突出部である。FIG. 4 shows a third embodiment. The resonance type sound absorbing / insulating panel 41 of this embodiment has three types of resonance chambers 45, 46 and 47, which are large, medium and small, four small resonance chambers 45 and a medium resonance chamber 46.
There are 3 chambers and 3 large resonance chambers 47, 10 chambers in total (10 chambers). 42 is a bottom wall portion, 43 is a front surface wall portion, 44 is a partition wall portion, 48, 49, 50 are sound absorbing holes, and 51, 52 are provided on the inner surface of the front surface wall portion 43 on the resonance chamber 46, 47 side. Sound absorbing holes 59, 60
Is a lip-shaped protrusion for extending the depth of the.
【００１２】図５は第４実施例を示す。この実施例の共
鳴型吸音・遮音パネル61はリップ状の突出部71，72を表
面壁部63の外面（音源側）に設けた点で、リップ状の突
出部を表面壁部の共鳴室側内面に設けた前記各実施例と
基本的に相違する。突出部71，72は取付フランジを有す
る断面Ｌ形を呈しており、該フランジが表面壁部63の外
面にボルト73（又は接着剤）により固定されている。こ
のように突出部71，72はこれ以外の基体とは通常別体に
製作されて取付けられるため、同材質ではないが、同材
質により一体に成形してもよい。また、吸音・遮音パネ
ル61は共鳴室65，66，67が大中小の３種類からなってお
り、小共鳴室65は６個、中共鳴室66は５個、大共鳴室67
は４個の計15個（室）となった15室型となっている。62
は底面壁部、63は表面壁部、64は仕切壁部であり、また
68，69，70は吸音孔である。FIG. 5 shows a fourth embodiment. In the resonance-type sound absorbing / sound-insulating panel 61 of this embodiment, the lip-shaped protrusions 71, 72 are provided on the outer surface (sound source side) of the surface wall 63, and the lip-shaped protrusion is on the resonance chamber side of the surface wall. It is basically different from the above-mentioned respective embodiments provided on the inner surface. The projecting portions 71, 72 have an L-shaped cross section having a mounting flange, and the flange is fixed to the outer surface of the surface wall portion 63 by a bolt 73 (or an adhesive). As described above, since the protrusions 71 and 72 are usually manufactured and attached separately from the other bases, the protrusions 71 and 72 are not made of the same material, but may be integrally formed of the same material. Further, the sound absorption / sound insulation panel 61 is composed of three types of resonance chambers 65, 66, and 67, which are large, medium, and small. Six small resonance chambers 65, five medium resonance chambers 66, and large resonance chamber 67.
Is a 15-room type with a total of 15 (rooms). 62
Is a bottom wall portion, 63 is a front surface wall portion, 64 is a partition wall portion,
68, 69 and 70 are sound absorbing holes.
【００１３】前記各実施例における吸音・遮音パネル
１，21，41，61においてはそれぞれ共鳴室と、スリット
形の吸音孔の存在によるヘルムホルツの共鳴（子）理論
により吸音・共鳴作用が奏される。吸音・共鳴作用が奏
される共鳴室の断面積あるいは該吸音孔の幅、深さは種
々に設定でき、これにより所望の共鳴周波数を得ること
が可能である。吸音・遮音パネル１，21，41，61の材質
は少なくとも底面壁部２，22，42，62が遮音性を有する
前記した繊維強化セメントの他に、強度や耐候性のある
合成樹脂であってもよい。吸音孔は前記各実施例では吸
音・遮音パネル１，21，41，61の縦方向のほぼ全長にわ
たるスリット形としたが、丸形、長孔形であってもよ
い。リップ状の突出部は前記したように表面壁部の共鳴
室側の内面又は表面壁部の外面に設けたが、両方に設け
る複合形にすることもできる。In the sound absorbing / insulating panels 1, 21, 41, 61 in the above-mentioned respective embodiments, the sound absorbing / resonating action is exhibited by the resonance chamber and the Helmholtz resonance (child) theory due to the existence of the slit-shaped sound absorbing holes. . The cross-sectional area of the resonance chamber where the sound absorbing / resonating action is exerted or the width and depth of the sound absorbing hole can be set variously, whereby a desired resonance frequency can be obtained. The sound absorbing / insulating panels 1, 21, 41, 61 are made of synthetic resin having strength and weather resistance in addition to the above-mentioned fiber reinforced cement having at least the bottom wall portions 2, 22, 42, 62 having sound insulating properties. Good. In each of the above-mentioned embodiments, the sound absorbing holes are slit-shaped over substantially the entire length of the sound-absorbing / sound-insulating panels 1, 21, 41, 61, but may be round or long-hole shaped. Although the lip-shaped protrusions are provided on the inner surface of the surface wall portion on the resonance chamber side or the outer surface of the surface wall portion as described above, they may be provided on both surfaces in a composite form.
【００１４】これらの共鳴型吸音・遮音パネルの構造の
決定に当り、ヘルムホルツの共鳴（子）理論による次に
示す共鳴周波数（ｆｏ）算出式を用いた。[0014] using these resonant sound absorbing and sound hits the determination of the structure of the sound insulating panel, the resonance frequency (f o) in the following Resonance (child) theory of Helmholtz calculation formula.
【数１】 前記式に第１実施例の１５室型における共鳴室５，６，
７、スリット形の吸音孔８，９，１０の大きさ（Ｓ，
ｈ，ｄ）を各々設定した値を次表に示す。尚、共鳴型吸
音・遮音パネル１の幅をＨ＝５０ｃｍ、長さをＬ＝１８
０ｃｍ、及び厚みをＴ＝７．５ｃｍとし、底部壁部２及
び表面壁部３の厚みを１．２ｃｍ、仕切壁部４の厚みを
１．０ｃｍとした。[Equation 1] In the above equation, the resonance chambers 5, 6, in the 15-chamber type of the first embodiment are
7, the size of the slit-shaped sound absorbing holes 8, 9, 10 (S,
The following table shows the values set for each of h and d). The width of the resonance type sound absorbing / insulating panel 1 is H = 50 cm, and the length is L = 18.
The thickness of the bottom wall 2 and the surface wall 3 was 1.2 cm, and the thickness of the partition wall 4 was 1.0 cm.
【表１】 前記によって得られる共鳴室５，６，７の共鳴周波数は
それぞれ９４０Ｈｚ，６２０Ｈｚ及び３４０Ｈｚと異な
った数値となる。そして、前記小中大３種類の共鳴室
５，６，７を製作した共鳴型吸音・遮音パネル１を用い
て日本建築総合研究所において吸音効率をＪＩＳ１４０
９に規定されている残響室法吸音率測定の方法に準拠し
て測定した結果を図６に示す。同様に、図３に示す第２
実施例の１３室型及び図４に示す第３実施例の１０室型
の共鳴型吸音・遮音パネル２１，４１を用いて残響室法
吸音率を測定した結果を図６に示す。尚、前記第２実施
例と第３実施例の共鳴型吸音・遮音パネル２１，４１の
外形寸法（Ｈ×Ｌ×Ｔ）は第１実施例の共鳴型吸音・遮
音パネル１のそれと同じにした。また、前記吸収率の測
定に当り、各パネルの長さ方向の両端面は公知のように
閉蓋される。[Table 1] The resonance frequencies of the resonance chambers 5, 6 and 7 obtained as described above are different values of 940 Hz, 620 Hz and 340 Hz, respectively. Then, using the resonance type sound absorbing / insulating panel 1 in which the three kinds of small, medium and large resonance chambers 5, 6 and 7 are manufactured, the sound absorption efficiency of JIS140
FIG. 6 shows the result of measurement in accordance with the method of measuring the sound absorption coefficient by the reverberation room method defined in 9. Similarly, the second shown in FIG.
FIG. 6 shows the measurement results of the reverberation room sound absorption coefficient using the 13-chamber type of the embodiment and the 10-chamber type resonance-type sound absorbing / insulating panels 21 and 41 of the third embodiment shown in FIG. The external dimensions (H × L × T) of the resonance type sound absorbing / insulating panels 21 and 41 of the second and third embodiments are the same as those of the resonance type sound absorbing / insulating panel 1 of the first embodiment. . In measuring the absorptance, both end faces in the length direction of each panel are closed as is well known.
【００１５】一方、図７（Ａ）〜（Ｄ）は比較例を示す
図で、（Ａ）は共鳴室の断面積が全て同じに形成された
単一３室型の防音パネル81（比較例１）、（Ｂ）は同、
単一８室型の防音パネル82（比較例２）、（Ｃ）は同、
単一16室型の防音パネル83（比較例３）及び（Ｄ）は共
鳴室の断面積に異なるものが混在して形成された、すな
わち前記各防音パネル81，82，83の共鳴室を組合せた複
合７室型の防音パネル84（比較例４）の防音パネルであ
り、各比較例の残響法吸音率を測定した結果を図８に示
す。尚、図７（Ａ）〜（Ｄ）の防音パネルの外形寸法
（Ｈ×Ｌ×Ｔ）は50cm×180cm×10cmとした。On the other hand, FIGS. 7A to 7D are views showing a comparative example, and FIG. 7A is a single three-chamber type soundproof panel 81 (comparative example) in which the resonance chambers have the same sectional area. 1) and (B) are the same,
The single 8-chamber soundproof panel 82 (Comparative Example 2) and (C) are the same.
The single 16-chamber soundproof panels 83 (Comparative Example 3) and (D) were formed by mixing different resonance chamber cross-sectional areas, that is, by combining the soundproof panels 81, 82, 83 with each other. 8 is a soundproof panel of the composite 7-room soundproof panel 84 (Comparative Example 4), and FIG. 8 shows the results of measuring the reverberation sound absorption coefficient of each Comparative Example. The external dimensions (H × L × T) of the soundproof panel shown in FIGS. 7A to 7D were 50 cm × 180 cm × 10 cm.
【００１６】前記各実施例の共鳴型吸音・遮音パネル
１，21，41は図６に示すように（第４実施例の吸音・遮
音パネル61は図６から省略してある）不特定の広範囲に
わたる周波数の騒音を吸収して共鳴室内で減衰させるこ
とができる。すなわち、図６からわかるように400Hz〜
１KHzにわたって飛躍的に向上した吸音率を示すことが
わかる。特に、第１実施例の15室型の吸音・遮音パネル
１にあっては、400Hz〜１KHzにわたって吸音効率が80％
以上に達するものとなった。これに対して、単一室型の
防音パネル81，82，83では図８に示すように吸音効率が
低い。ただ図７（Ｄ）の複合型の防音パネル84の場合に
は周波数帯域がかなり広がるとともに吸音効率向上の傾
向がみられるが、単位断面積内での共鳴室が７個と少な
いため、残響室法吸音率は60％と低い。この理由につい
ては十分説明できないが、共鳴型吸音・遮音パネルの幅
方向断面積内に共鳴室を多数密集させるとともに同じ断
面積のものが隣り合わないように配設することによって
その相乗作用が得られて吸音効率が大幅に向上したもの
と推定される。尚、前記各実施例では所定幅内に小中大
の共鳴室を多数形成したが、各共鳴室をそれぞれ押出し
成形したのち、前記した基準にしたがって組み立てても
よく、また、小中大の共鳴室を１パネルとして押出し成
形し、これを組合わせてもよい。また、前記各実施例の
特定共鳴室内に、必要により粒状又は繊維状の吸音材を
充填して、さらに周波数特性や吸音率を上げることもで
きる。The resonance type sound absorbing / insulating panels 1, 21, 41 of each of the above-mentioned embodiments are shown in FIG. 6 (the sound absorbing / insulating panel 61 of the fourth embodiment is omitted from FIG. 6) in an unspecified wide range. It is possible to absorb noise of a range of frequencies and attenuate it in the resonance chamber. That is, as can be seen from FIG.
It can be seen that the sound absorption coefficient dramatically improves over 1 KHz. Particularly, in the fifteen-chamber sound absorbing / sound-insulating panel 1 of the first embodiment, the sound absorbing efficiency is 80% over 400 Hz to 1 KHz.
The above has been reached. On the other hand, the single-chamber soundproof panels 81, 82, and 83 have low sound absorption efficiency as shown in FIG. However, in the case of the composite type soundproof panel 84 of FIG. 7D, the frequency band is considerably widened and the sound absorption efficiency tends to be improved, but since there are only 7 resonance chambers in the unit cross-sectional area, the reverberation chamber is small. The sound absorption coefficient is low at 60%. The reason for this cannot be fully explained, but the synergistic effect can be obtained by arranging a large number of resonance chambers within the cross-sectional area in the width direction of a resonance-type sound-absorbing / insulating panel and by arranging them so that they do not have the same cross-sectional area. It is presumed that the sound absorption efficiency was significantly improved. In each of the above embodiments, a large number of small, medium, and large resonance chambers were formed within a predetermined width, but each resonance chamber may be extruded and then assembled according to the above-mentioned criteria. The chamber may be extruded as a panel and combined. If necessary, a granular or fibrous sound absorbing material may be filled in the specific resonance chamber of each of the embodiments to further improve the frequency characteristics and the sound absorbing coefficient.
【００１７】[0017]
【発明の効果】請求項１の発明は、以上のように構成さ
れるので、次に述べるような効果を奏する。底面壁部、
表面壁部および仕切壁部によって区画される吸音目標周
波数に合わせた２種類以上の異なる断面積の共鳴室を同
じ断面積のものが隣り合わないように配列したので、従
来の単一室型の共鳴室を有する防音パネルに比べて吸音
効率が大幅に向上することとなった。また、表面壁部に
吸音孔の深さを延長するためのリップ状の突出部を設
け、この突出部によって延長される吸音孔の深さを共鳴
室の断面積が大きい場合には長く、小さい場合には短く
なるように共鳴室の断面積と対応した長さとしたので、
低周波数から高周波数に至る広範囲の周波数の騒音を吸
収できる。しかも、リップ状の突出部によって延長され
る吸音孔の深さを長くすることにより結果的に共鳴室の
断面積を小さくすることができ、このことによってパネ
ルの一定断面積内における断面積の小さい共鳴室をより
多く配設することができ、吸音率の改善を一層図ること
ができる。また、共鳴室内にグラスウール等の吸音材を
一切充填していないから、水がかかる箇所に施工しても
吸音特性が低下する恐れ全くないばかりか、従来のよう
な充填材の目詰まりによる洗浄や取替えのメンテナンス
が不要となり長期の使用に耐える。Since the invention of claim 1 is configured as described above, it has the following effects. Bottom wall,
Since two or more kinds of resonance chambers having different cross-sectional areas, which are divided by the surface wall portion and the partition wall portion and have the same cross-sectional area according to the sound absorption target frequency, are arranged so as not to be adjacent to each other, the conventional single-chamber type The sound absorption efficiency is significantly improved compared to a soundproof panel having a resonance chamber. Further, a lip-shaped protrusion for extending the depth of the sound absorbing hole is provided on the surface wall, and the depth of the sound absorbing hole extended by this protrusion is long and small when the cross-sectional area of the resonance chamber is large. In this case, the length is set to correspond to the cross-sectional area of the resonance chamber so that it becomes shorter.
It can absorb noise in a wide range of frequencies from low frequencies to high frequencies. In addition, by increasing the depth of the sound absorbing hole extended by the lip-shaped protrusion, the cross-sectional area of the resonance chamber can be reduced as a result, which reduces the cross-sectional area within the constant cross-sectional area of the panel. More resonance chambers can be arranged, and the sound absorption coefficient can be further improved. In addition, since the sound absorbing material such as glass wool is not filled in the resonance chamber at all, there is no fear that the sound absorbing property will be deteriorated even if it is installed in a place where water is splashed, and cleaning by clogging of the filling material as in the conventional Withstands long-term use without the need for replacement maintenance.
【００１８】請求項２の発明によれば、表面壁部の共鳴
室側内面にリップ状の突出部が形成されているので、該
突出部が外力によって折損するような恐れが全くないば
かりか該パネルの取り扱いや搬送が容易となり、さらに
は表面壁部の補強リブとなる。また、請求項３の発明に
よれば表面壁部の外面にリップ状の突出部が形成されて
いるので、該突出部を取り替え方式にすることによって
パネルの基体を取り替えることなく、突出部の高さを替
えることによって共鳴周波数を変更できる。According to the second aspect of the present invention, since the lip-shaped protrusion is formed on the inner surface of the surface wall portion on the resonance chamber side, there is no possibility that the protrusion is broken by an external force. It facilitates handling and transportation of the panel, and also serves as a reinforcing rib on the surface wall. According to the third aspect of the present invention, since the lip-shaped protrusion is formed on the outer surface of the surface wall, the protrusion can be replaced by a method of replacing the base of the panel without changing the height of the protrusion. The resonance frequency can be changed by changing the height.
【図１】この発明の第１実施例の共鳴型吸音・遮音パネ
ルを示す一部省略の斜視図である。FIG. 1 is a partially omitted perspective view showing a resonance-type sound absorbing / sound-insulating panel of a first embodiment of the present invention.
【図２】同上の共鳴型吸音・遮音パネルの要部拡大断面
図である。FIG. 2 is an enlarged cross-sectional view of a main part of the resonance-type sound absorbing and sound insulating panel of the above.
【図３】第２実施例の共鳴型吸音・遮音パネルを示す一
部破断の正面図である。FIG. 3 is a partially cutaway front view showing a resonance-type sound absorbing and sound insulating panel of a second embodiment.
【図４】第３実施例の共鳴型吸音・遮音パネルを示す正
面図である。FIG. 4 is a front view showing a resonance-type sound absorbing and sound insulating panel of a third embodiment.
【図５】第４実施例の共鳴型吸音・遮音パネルを示す正
面図である。FIG. 5 is a front view showing a resonance-type sound absorbing and sound insulating panel of a fourth embodiment.
【図６】第１ないし第３実施例の共鳴型吸音・遮音パネ
ルについての残響室法吸音率を示すグラフである。FIG. 6 is a graph showing the reverberation room sound absorption coefficient for the resonance-type sound absorbing / sound insulating panels of the first to third embodiments.
【図７】比較例を示し、（Ａ）は比較例１を示す正面
図、（Ｂ）は比較例２を示す正面図、（Ｃ）は比較例３
を示す正面図、（Ｄ）は比較例４を示す正面図である。FIG. 7 shows a comparative example, (A) is a front view showing comparative example 1, (B) is a front view showing comparative example 2, and (C) is a comparative example 3.
And (D) is a front view showing Comparative Example 4.
【図８】比較例についての残響室法吸音率を示すグラフ
である。FIG. 8 is a graph showing a reverberation room method sound absorption coefficient for a comparative example.
１ 共鳴型吸音・遮音パネル ２ 底面壁部 ３ 表面壁部 ４ 仕切壁部 ５，６，７ 共鳴室 ８，９，10 吸音孔 11，12 リップ状の突出部 1 Resonance type sound absorbing / insulating panel 2 Bottom wall part 3 Surface wall part 4 Partition wall part 5, 6, 7 Resonance chamber 8, 9, 10 Sound absorbing hole 11, 12 Lip-shaped protruding part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 梅本 昭造 大阪府大阪市西区北堀江１丁目12番19号 株式会社栗本鐵工所内 (72)発明者 浜 明 大阪府大阪市西区北堀江１丁目12番19号 株式会社栗本鐵工所内 (72)発明者 林 泰文 大阪府大阪市西区北堀江１丁目12番19号 株式会社栗本鐵工所内 (72)発明者 藤本 英二 大阪府大阪市西区北堀江１丁目12番19号 株式会社栗本鐵工所内 (56)参考文献 実開 昭48−15339（ＪＰ，Ｕ) 実開 昭51−69322（ＪＰ，Ｕ) 実開 昭49−99014（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shozo Umemoto 1-12-19 Kitahori, Nishi-ku, Osaka City, Osaka Prefecture Kurimoto Iron Works Co., Ltd. (72) Akira Hama 1-12, Kitahorie, Nishi-ku, Osaka-shi, Osaka No. 19 Kurimoto Iron Works Co., Ltd. (72) Inventor Yasufumi Hayashi 1-12-19 Kitahori, Nishi-ku, Osaka-shi, Osaka Prefecture Kurimoto Iron Works Co., Ltd. (72) Eiji Fujimoto 1 Kitahori, Nishi-ku, Osaka-shi, Osaka Prefecture Kurimoto Iron Works Co., Ltd. (No. 12-19) (56) References: Showa 48-15339 (JP, U) Showa 51-69322 (JP, U) Showa 49-99014 (JP, U)
Claims (3)
配置された表面壁部と、これら底面壁部と表面壁部間に
その面方向に所定間隔をおいて配置された複数の仕切壁
部とにより吸音目標周波数に合わせた２種類以上の異な
る断面積の共鳴室を複数形成し、これら各共鳴室と外部
とを連通する吸音孔を表面壁部に形成してなる共鳴型吸
音・遮音パネルにおいて、 前記共鳴室が同じ断面積のものが隣り合わないように配
列され、かつ前記表面壁部に吸音孔の深さを延長するた
めのリップ状の突出部が設けられ、この突出部によって
延長される吸音孔の深さは共鳴室の断面積が大きい場合
には長く、小さい場合には短くなるように共鳴室の断面
積と対応した長さとなっていることを特徴とする共鳴型
吸音・遮音パネル。1. A bottom wall portion, a front surface wall portion arranged to face the bottom wall portion, and a plurality of plurality of bottom wall portions arranged at predetermined intervals in the surface direction between the bottom wall portion and the front surface wall portion. A resonance type in which a plurality of resonance chambers having two or more different cross-sectional areas according to the sound absorption target frequency are formed by the partition wall portion and sound absorbing holes that communicate these resonance chambers with the outside are formed in the surface wall portion. In a sound-absorbing / sound-insulating panel, the resonance chambers having the same cross-sectional area are arranged so as not to be adjacent to each other, and a lip-shaped protrusion for extending the depth of the sound-absorbing holes is provided on the surface wall portion. The depth of the sound absorbing hole extended by the protrusion is long when the cross-sectional area of the resonance chamber is large, and short when the cross-sectional area of the resonance chamber is small. Resonance type sound absorption / insulation panel.
内面に形成されていることを特徴とする請求項１記載の
共鳴型吸音・遮音パネル。2. The resonance type sound absorbing / insulating panel according to claim 1, wherein the lip-shaped protrusion is formed on the inner surface of the front surface wall on the resonance chamber side.
成されていることを特徴とする請求項１記載の共鳴型吸
音・遮音パネル。3. The resonance type sound absorbing / insulating panel according to claim 1, wherein a lip-shaped protruding portion is formed on the outer surface of the front surface wall portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4250013A JP2547927B2 (en) | 1992-09-18 | 1992-09-18 | Resonance type sound absorbing and sound insulation panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4250013A JP2547927B2 (en) | 1992-09-18 | 1992-09-18 | Resonance type sound absorbing and sound insulation panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06129029A JPH06129029A (en) | 1994-05-10 |
| JP2547927B2 true JP2547927B2 (en) | 1996-10-30 |
Family
ID=17201551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4250013A Expired - Lifetime JP2547927B2 (en) | 1992-09-18 | 1992-09-18 | Resonance type sound absorbing and sound insulation panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2547927B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102273933B1 (en) * | 2020-11-04 | 2021-07-06 | 한국교통대학교산학협력단 | Resonant module with fin and soundproof wall using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08246421A (en) * | 1995-03-08 | 1996-09-24 | Nozawa Corp | Resonator type soundproof panel |
| JPH0978539A (en) * | 1995-09-14 | 1997-03-25 | Sekisui Jushi Co Ltd | Sound absorbing tube and sound absorbing structure fitted with it |
| JPH1046700A (en) * | 1996-08-01 | 1998-02-17 | Nozawa Corp | Resonator member and molding method of soundproof board making use thereof |
| DE69809715D1 (en) * | 1997-03-07 | 2003-01-09 | Oscar Avian | METHOD FOR PRODUCING SOUND-INSULATING BUILDING PLATES OR SURFACES FOR INTERIORS |
| JPH10331289A (en) * | 1997-06-05 | 1998-12-15 | Ig Tech Res Inc | Silencing panel |
| JP3325498B2 (en) * | 1997-06-25 | 2002-09-17 | ユニプレス株式会社 | Ventilated sound insulation wall structure |
| JP3536201B2 (en) * | 1999-04-22 | 2004-06-07 | 株式会社アルム | Sound absorbing panel |
| JP3893053B2 (en) * | 2001-12-12 | 2007-03-14 | ユニプレス株式会社 | Ventilated sound insulation wall structure |
| JP4019820B2 (en) * | 2002-06-28 | 2007-12-12 | 日本軽金属株式会社 | Sound absorbing structure |
| JP4452195B2 (en) * | 2005-02-21 | 2010-04-21 | 三菱重工業株式会社 | Sound absorber |
| JP4023694B1 (en) * | 2007-05-10 | 2007-12-19 | 欣哉 清水 | Resonator type glass block made of glass with light diffraction action |
| JP2009008075A (en) * | 2008-06-13 | 2009-01-15 | Mitsubishi Heavy Ind Ltd | Compact power generator and soundproofing panel |
| KR101044027B1 (en) * | 2009-01-05 | 2011-06-27 | 이우춘 | Proof panel |
| JP5635849B2 (en) * | 2010-09-16 | 2014-12-03 | 日本軽金属株式会社 | Soundproof structure |
| JP5446018B2 (en) * | 2011-05-20 | 2014-03-19 | 国立大学法人 新潟大学 | Sound absorbing structure |
| JP2013250501A (en) * | 2012-06-04 | 2013-12-12 | Three M Innovative Properties Co | Sound absorbing board |
| JP6380833B2 (en) * | 2014-05-15 | 2018-08-29 | 株式会社リコー | Electronic apparatus and image forming apparatus |
| JP2017089220A (en) * | 2015-11-10 | 2017-05-25 | フクビ化学工業株式会社 | Panel member and panel wall using the same |
| JP2018081188A (en) * | 2016-11-16 | 2018-05-24 | 清水建設株式会社 | Manufacturing method of resonator and adjustment method of resonator |
| KR101896981B1 (en) * | 2018-05-27 | 2018-09-10 | (주)태평양 | Sound absorptive soundproof panel of integral high density polyethylene |
| JP7217616B2 (en) * | 2018-11-13 | 2023-02-03 | Ｊｆｅ建材株式会社 | Sound insulation panels and sound insulation walls |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61150907U (en) * | 1985-03-09 | 1986-09-18 | ||
| JPH0214498A (en) * | 1988-06-30 | 1990-01-18 | Mitsubishi Electric Corp | Semiconductor test equipment |
| JP2546093Y2 (en) * | 1991-11-13 | 1997-08-27 | 株式会社イトーキクレビオ | Double floor floor panel support equipment |
-
1992
- 1992-09-18 JP JP4250013A patent/JP2547927B2/en not_active Expired - Lifetime
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|---|---|---|---|---|
| KR102273933B1 (en) * | 2020-11-04 | 2021-07-06 | 한국교통대학교산학협력단 | Resonant module with fin and soundproof wall using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06129029A (en) | 1994-05-10 |
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