JP3158876B2 - Sound insulation wall structure - Google Patents
Sound insulation wall structureInfo
- Publication number
- JP3158876B2 JP3158876B2 JP16703994A JP16703994A JP3158876B2 JP 3158876 B2 JP3158876 B2 JP 3158876B2 JP 16703994 A JP16703994 A JP 16703994A JP 16703994 A JP16703994 A JP 16703994A JP 3158876 B2 JP3158876 B2 JP 3158876B2
- Authority
- JP
- Japan
- Prior art keywords
- wall
- honeycomb structure
- sound insulating
- sound insulation
- sound
- 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
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Body Structure For Vehicles (AREA)
- Laminated Bodies (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、通気性を保持しながら
遮音効果を発揮することが出来る遮音壁構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound insulating wall structure capable of exhibiting a sound insulating effect while maintaining air permeability.
【０００２】[0002]
【従来の技術】従来、遮音構造を適用した自動車として
は例えば図７、図８に示すものがある。この自動車１は
エンジンルーム３の下部にアンダーカバー５を取り付け
たものである。アンダーカバー５は、自動車の下部の空
力特性を向上させ、またエンジンルーム３内の部品を跳
ね上げられた小石等から保護する機能を持つと共に、エ
ンジンルーム３から車外に放射される騒音を抑制する遮
音壁としての機能を有している。そして、このアンダー
カバー５の遮音壁としての効果はその面積がおおきなも
のほど増大する。2. Description of the Related Art Conventionally, as an automobile to which a sound insulation structure is applied, for example, there are automobiles shown in FIGS. The automobile 1 has an undercover 5 attached to a lower portion of an engine room 3. The under cover 5 has a function of improving the aerodynamic characteristics of the lower part of the vehicle, protecting the components in the engine room 3 from pebbles and the like, and suppressing noise radiated from the engine room 3 to the outside of the vehicle. It has a function as a sound insulation wall. The effect of the undercover 5 as a sound insulation wall increases as the area of the undercover 5 increases.
【０００３】しかしながら、アンダーカバー５の面積を
大きくするほどエンジンルーム３の下部が密閉されるこ
とになり、エンジンルーム３内の空気温度が上昇する。
このためエンジンルーム３内が高温となって、部品の耐
久性上好ましくない状態を招く恐れがある。このように
エンジンルーム３のアンダーカバーの設定に当たって
は、騒音抑制という側面だけでなく熱的な側面も考慮し
なければならない。However, as the area of the under cover 5 increases, the lower part of the engine room 3 is hermetically sealed, and the air temperature in the engine room 3 increases.
Therefore, the temperature inside the engine room 3 becomes high, which may lead to an unfavorable state in terms of the durability of the parts. In setting the under cover of the engine room 3 in this way, not only the aspect of noise suppression but also the thermal aspect must be considered.
【０００４】そこで、本出願人は、図９、図１０に示す
ような遮音壁７を既に出願している（特願平５−３２２
０４１号）。この遮音壁７は、間隔を置いて対向する２
枚の遮音板９、１１を備え、各遮音板９、１１には互い
に対向する開口部９ａ、９ｂ、１１ａ、１１ｂが設けら
れている。また、遮音板９、１１間には、遮音板９、１
１間の空気層を分割する区画壁１３が設けられている。
そして、開口部９ａ、１１ａ、９ｂ、１１ｂに形成され
る空気マスと遮音板９、１１間の空気層に形成される空
気ばねとで構成される振動系を２種類以上形成し、それ
ぞれの振動系からの透過波が干渉して打ち消し合うこと
により遮音効果を得ている。Therefore, the present applicant has already filed an application for a sound insulating wall 7 as shown in FIGS. 9 and 10 (Japanese Patent Application No. 5-322).
041). The sound insulation wall 7 is opposed to the sound insulation wall 7 at an interval.
The sound insulation plates 9 and 11 are provided with openings 9a, 9b, 11a and 11b facing each other. In addition, between the sound insulation plates 9 and 11, there are sound insulation plates 9 and 1
A partition wall 13 that divides the air layer between the two is provided.
Then, two or more types of vibration systems composed of air masses formed in the openings 9a, 11a, 9b, 11b and air springs formed in the air layer between the sound insulation plates 9, 11 are formed, and each vibration system is formed. The sound insulation effect is obtained by the transmitted waves from the system interfering and canceling each other.
【０００５】具体的には、図１０に示すように、遮音板
９、１１間は、遮音板９、１１間に設けた区画壁１３に
より、体積の異なる複数の空間に区画されている。そし
て、各複数の開口部９ａ、９ｂ、１１ａ、１１ｂの空気
１５、１７の空気質量と遮音板９、１１間の空気層のば
ね定数ｋの空気ばね１９、２１とで２自由度の振動系１
７を構成している。このとき、区画された空間の体積を
変えたり、あるいは開口部の内径を変えることにより、
２自由度の振動系を２種類構成すると、各振動系の共振
周波数の間の周波数帯では、それぞれの振動系からの透
過波の位相が互いに逆相になり、打ち消し合う。これに
より、遮音効果が得られる。More specifically, as shown in FIG. 10, the sound insulating plates 9 and 11 are divided into a plurality of spaces having different volumes by a partition wall 13 provided between the sound insulating plates 9 and 11. A vibration system having two degrees of freedom is formed by the air masses of the airs 15 and 17 in the plurality of openings 9a, 9b, 11a and 11b and the air springs 19 and 21 having a spring constant k of the air layer between the sound insulating plates 9 and 11. 1
7. At this time, by changing the volume of the partitioned space, or by changing the inner diameter of the opening,
When two types of vibration systems having two degrees of freedom are configured, in the frequency band between the resonance frequencies of the respective vibration systems, the phases of the transmitted waves from the respective vibration systems are opposite to each other and cancel each other. Thereby, a sound insulation effect is obtained.
【０００６】[0006]
【発明が解決しようとする課題】ところが、このような
構造の遮音壁７を製造する場合、遮音板間に区画壁を設
置する構造であるため、構造が複雑であり、安価に製造
することが出来ないという問題がある。However, when the sound insulating wall 7 having such a structure is manufactured, since the partition wall is provided between the sound insulating plates, the structure is complicated and the manufacturing can be performed at low cost. There is no problem.
【０００７】すなわち、２枚の遮音板９、１１間にこれ
らの遮音板９、１１にそれぞれ接合する区画壁１３を設
けると共に、隔壁同士も接合するので、構造が複雑にな
る。また、区画壁１３を遮音板９、１１に隙間なく接合
する他に、区画壁１３同士をも隙間なく接合する必要が
あるため接合作業に手間がかかり、製造コストが高くな
る。That is, the partition wall 13 is provided between the two sound insulating plates 9 and 11 and joined to the sound insulating plates 9 and 11, respectively, and the partition walls are also joined to each other, so that the structure becomes complicated. Further, in addition to joining the partition walls 13 to the sound insulating plates 9 and 11 without any gaps, it is necessary to join the partition walls 13 without any gaps, so that the joining operation is troublesome and the manufacturing cost is increased.
【０００８】このため、区画壁１３同士を予め接合して
おき、遮音板９、１１間に配置して接合することも考え
られるが、この場合にも、区画壁１３同士を隙間なく予
め接合しておく作業が必要なので、遮音壁７を製造する
全体のコストを考えると、製造コストが高くつく。For this reason, it is conceivable to join the partition walls 13 in advance and to arrange and join them between the sound insulating plates 9 and 11, but also in this case, the partition walls 13 are joined in advance without gaps. Since it is necessary to carry out the work, the production cost is high in consideration of the overall cost of manufacturing the sound insulating wall 7.
【０００９】そこで、本発明は、遮音性能を保ちなが
ら、容易に、且つ、安価に製造が可能な遮音壁構造の提
供を目的とする。Accordingly, an object of the present invention is to provide a sound insulating wall structure which can be easily and inexpensively manufactured while maintaining sound insulating performance.
【００１０】[0010]
【課題を解決するための手段】上記目的を達成するため
請求項１記載の発明は、間隔を置いて対向する少なくと
も２枚の遮音板と、前記遮音板に貫通して設けられ、互
いに対向する開口部を有し、前記開口部の空気質量と前
記遮音板間の空気層の空気ばねとでなる振動系を複数種
備え、一方の振動系と他方の振動系とを区画壁で区画す
る遮音壁構造において、ハニカム構造体を遮音板間に挟
持して、ハニカム構造体の壁部で前記区画壁を形成し、
前記遮音板の前記開口部の周囲に、前記ハニカム構造体
の開口に嵌合する突壁部を設けて、前記遮音板間にハニ
カム構造体を挟持したことを特徴としている。In order to achieve the above object, the invention according to claim 1 is provided with at least two sound insulating plates facing each other at an interval, and provided through the sound insulating plates and facing each other. A sound insulation wall having an opening, comprising a plurality of types of vibration systems including an air mass of the opening and an air spring of an air layer between the sound insulation plates, and partitioning one vibration system and the other vibration system by a partition wall. In the structure, a honeycomb structure is sandwiched between sound insulation plates, and the partition wall is formed by a wall portion of the honeycomb structure ,
Around the opening of the sound insulating plate, the honeycomb structure
Protruding wall portions that fit into the openings of the
It is characterized in that a cam structure is sandwiched .
【００１１】請求項２記載の発明は、間隔を置いて対向
する少なくとも２枚の遮音板と、前記遮音板に貫通して
設けられ、互いに対向する開口部を有し、前記開口部の
空気質量と前記遮音板間の空気層の空気ばねとでなる振
動系を複数種備え、一方の振動系と他方の振動系とを区
画壁で区画する遮音壁構造において、ハニカム構造体を
遮音板間に挟持して、ハニカム構造の壁部で前記区画壁
を形成し、前記ハニカム構造体の壁部と、２枚の遮音板
とで区画された空間の体積を複数種設定し、前記ハニカ
ム構造体の壁部と前記２枚の遮音板とで区画されて略同
一の振動系を構成する空間同士を連通する孔部を前記壁
部に設け、前記遮音板とハニカム構造との間に、軟質材
料を設けて、遮音板とハニカム構造体との間を隙間なく
接合させることを特徴としている。According to a second aspect of the present invention, there is provided a device which faces at an interval.
At least two sound insulating plates, and the sound insulating plate
Are provided and have openings facing each other, and
The vibration formed by the air mass and the air spring in the air layer between the sound insulation plates
A plurality of dynamic systems are provided to distinguish one vibration system from the other.
In a sound insulation wall structure partitioned by a painting wall, a honeycomb structure
The partition wall is sandwiched between sound insulation plates, and the partition wall is formed by a honeycomb structure wall.
And a wall portion of the honeycomb structure and two sound insulating plates
And setting a plurality of types of volume of the space partitioned by
And the two sound insulating plates are substantially the same.
The hole that connects the spaces that constitute one vibration system
And a soft material between the sound insulating plate and the honeycomb structure.
With a gap between the sound insulation plate and the honeycomb structure
It is characterized by to be joined.
【００１２】[0012]
【作用】請求項１の発明によれば、２枚の遮音板の間
に、ハニカム構造体を挟持して、ハニカム構造体の両端
面を遮音板にそれぞれ接合する。そして、ハニカム構造
体の壁部により区画壁を形成し、所定の振動系を他の振
動系から区画する。また、ハニカム構造体と遮音板との
間に、軟質材料を設けることにより、ハニカム構造体と
遮音板とを隙間なく接合することが出来、遮音板とハニ
カム構造体の壁部とで形成した空間を他の空間と音響的
に確実に隔絶することが出来る。According to the first aspect of the present invention, a honeycomb structure is sandwiched between two sound insulating plates, and both end surfaces of the honeycomb structure are joined to the sound insulating plates. Then, a partition wall is formed by the wall of the honeycomb structure, and a predetermined vibration system is partitioned from other vibration systems. In addition, by providing a soft material between the honeycomb structure and the sound insulating plate, the honeycomb structure and the sound insulating plate can be joined without a gap, and the space formed by the sound insulating plate and the wall of the honeycomb structure. Can be acoustically isolated from other spaces.
【００１３】請求項２の発明によれば、ハニカム構造体
の壁部と２枚の遮音板とで区画された空間の体積を、複
数種類設定したことにより、複数種類の振動系を構成す
ることが出来る。また、ハニカム構造体の壁部に孔部を
設けて、略同一の振動系を構成することにより、略同一
の振動系が連成して、同一の共振周波数を持つことが出
来る。According to the second aspect of the present invention, a plurality of types of vibration systems are configured by setting a plurality of types of volumes of a space defined by the wall of the honeycomb structure and the two sound insulating plates. Can be done. Further, by providing holes in the wall of the honeycomb structure to constitute substantially the same vibration system, substantially the same vibration systems can be coupled to have the same resonance frequency.
【００１４】さらに、ハニカム構造体と遮音板との間
に、軟質材料を設けることにより、ハニカム構造体と遮
音板とを隙間なく接合することができ、遮音板とハニカ
ム構造体の壁部とで形成した空間を他の空間と音響的に
確実に隔絶することがことができる。Further, by providing a soft material between the honeycomb structure and the sound insulating plate, the honeycomb structure and the sound insulating plate can be joined without gaps, and the sound insulating plate and the wall of the honeycomb structure can be joined together. The formed space can be acoustically isolated from other spaces.
【００１５】[0015]
【実施例】以下、本発明に係る遮音壁の実施例について
図面を用いて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the sound insulating wall according to the present invention will be described below with reference to the drawings.
【００１６】なお、第１実施例は、ハニカム構造体を用
いた遮音壁の基本構造を示し、第２実施例は、ハニカム
構造体の各セルの容積を変化させた例である。また、第
３実施例は、ハニカム構造体の隔壁に孔部を設けて各セ
ル間を連通した例であり、第４実施例は、突壁部６７を
ハニカム構造体の開口に設けた例である。The first embodiment shows the basic structure of a sound insulating wall using a honeycomb structure, and the second embodiment is an example in which the volume of each cell of the honeycomb structure is changed. Further, the third embodiment is an example in which holes are provided in the partition walls of the honeycomb structure to communicate between the cells, and the fourth embodiment is an example in which the projecting wall portion 67 is provided at the opening of the honeycomb structure. is there.
【００１７】第１実施例 本実施例は、遮音構造を図７及び図８に示す自動車のア
ンダーカバーに適用したものである。すなわち、エンジ
ンルーム３の下部にアンダーカバー５が設けられ、その
後方側に遮音壁２５が一体に設けられている。この実施
例の遮音壁２５の具体的構成を図１（ａ）、（ｂ）に示
す。First Embodiment In this embodiment, the sound insulation structure is applied to an undercover of an automobile shown in FIGS. That is, the under cover 5 is provided at the lower part of the engine room 3, and the sound insulation wall 25 is integrally provided behind the under cover 5. 1A and 1B show a specific configuration of the sound insulating wall 25 of this embodiment.
【００１８】図１（ａ）に示すように、遮音壁２５は、
間隔を置いて対向する２枚の遮音板２７、２９を有して
いる。各遮音板２７、２９には、互いに対向する開口部
２７ａ、２７ｂ、２９ａ、２９ｂが貫通して設けられ、
それぞれ複数備えられている。開口部２７ａ、２９ａ
は、開口部２７ｂ、２９ｂより小径で、開口縁部から延
長部３１が対向側にそれぞれ突設されている。また、遮
音板２７、２９間には、ハニカム構造体３３の壁部３５
で形成される区画壁３７が設けられている。従って、複
数の振動系３９、４１が設けられ、区画壁３７は一方の
振動系３９と他方の振動系４１とを区画する構成となっ
ている。As shown in FIG. 1A, the sound insulation wall 25 is
It has two sound insulation plates 27 and 29 facing each other at intervals. Openings 27a, 27b, 29a, 29b facing each other are provided through each of the sound insulation plates 27, 29,
Each has a plurality. Openings 27a, 29a
Are smaller in diameter than the openings 27b and 29b, and extended portions 31 project from the edge of the opening to the opposite sides, respectively. Further, between the sound insulation plates 27 and 29, the wall portion 35 of the honeycomb structure 33 is provided.
Is provided. Therefore, a plurality of vibration systems 39 and 41 are provided, and the partition wall 37 is configured to partition the one vibration system 39 and the other vibration system 41.
【００１９】すなわち、図１（ａ）に示すように、ハニ
カム構造体３３は、複数の六角形の同形状の筒体４３が
集合して形成されており、上下の開口端面が面一に形成
されている。また、筒体４３を構成する壁部３５は、対
向する壁部が同面積の壁で形成されている。そして、遮
音板２７、２９間に挟持された状態では、筒体４３の上
下の開口が遮音板２７、２９でそれぞれ閉鎖されると共
に、上下の開口面に、遮音板２７、２９の開口部２７
ａ、２７ｂ、２９ａ、２９ｂがそれぞれ位置している。
このため、ハニカムカム構造体３３の壁部３５が区画壁
３７となって、遮音板２７、２９間の空間を複数に区画
している。従って、複数の振動系３９、４１が設けら
れ、区画壁３７は一方の振動系３９を他方の振動系４１
から区画する構成となっている。That is, as shown in FIG. 1A, the honeycomb structure 33 is formed by assembling a plurality of hexagonal cylinders 43 of the same shape, and the upper and lower opening end faces are formed flush. Have been. Moreover, the wall part 35 which comprises the cylindrical body 43 has the opposing wall part formed by the wall of the same area. Then, in a state of being sandwiched between the sound insulating plates 27 and 29, the upper and lower openings of the cylindrical body 43 are closed by the sound insulating plates 27 and 29, respectively, and the opening portions 27 of the sound insulating plates 27 and 29 are formed on the upper and lower opening surfaces.
a, 27b, 29a, and 29b are located respectively.
For this reason, the wall portion 35 of the honeycomb structure 33 serves as a partition wall 37, and partitions the space between the sound insulation plates 27 and 29 into a plurality. Therefore, a plurality of vibration systems 39 and 41 are provided, and the partition wall 37 is configured such that one vibration system 39 is connected to the other vibration system 41.
It is configured to partition from.
【００２０】一方の振動系３９は、開口部２７ａ、２９
ａの空気の質量と区画壁３７で囲まれた遮音板２７、２
９間の空気層で構成される空気ばねとからなっている。
この場合、開口部２７ａ、２９ａの空気の質量は、図１
０に示す空気１５に相当し、空気ばねは図１０に示す空
気ばね１９に相当する。他方の振動系４１は、同様に開
口部２７ｂ、２９ｂの空気の質量と区画壁３７で囲まれ
た遮音板２７、２９間の空気層で構成される空気ばねと
からなっている。この場合、開口部２７ａ、２９ａの開
口縁部から対向側に延長部３１が形成されているので、
この開口部２７ａ、２９ａの空気質量を大きくしてい
る。これによって、開口部２７ａ、２９ａの空気層で形
成される振動系の共振周波数を低く設定している。な
お、開口部２７ｂ、２９ｂは、開口部２７ａ、２９ａよ
り大径に設定し、延長部３１も設定していないので、開
口部の空気質量も小さい。このため、共振周波数が高く
設定されている。従って、異なる２つの共振周波数の間
で遮音効果が得られる。One vibrating system 39 has openings 27a, 29
a of the air mass and the sound insulating plate 27, 2 surrounded by the partition wall 37
And an air spring composed of 9 air layers.
In this case, the mass of the air in the openings 27a and 29a is as shown in FIG.
The air spring corresponds to the air spring 19 shown in FIG. Similarly, the other vibration system 41 is composed of air masses of the openings 27b and 29b and an air spring formed of an air layer between the sound insulation plates 27 and 29 surrounded by the partition wall 37. In this case, since the extension 31 is formed on the opposite side from the opening edges of the openings 27a and 29a,
The air mass of the openings 27a and 29a is increased. Thus, the resonance frequency of the vibration system formed by the air layers in the openings 27a and 29a is set low. The openings 27b and 29b are set to have a larger diameter than the openings 27a and 29a, and the extension 31 is not set, so that the air mass of the openings is also small. For this reason, the resonance frequency is set high. Therefore, a sound insulation effect can be obtained between two different resonance frequencies.
【００２１】次に、遮音壁２５を組み付けるには、遮音
板２７、２９間にハニカム構造体３３を挟み込み、ハニ
カム構造体３３の上下を遮音板２７、２９にそれぞれ接
着等により張り付ける。この場合、ハニカム構造体３３
の筒体４３内にそれぞれ開口部２７ａ、２７ｂ、２９
ａ、２９ｂが対向するようにハニカムカム構造体３３を
挟み込む。これにより、ハニカム構造体３３の壁部３５
により、複数の振動系３９、４１が設けられ、区画壁３
７が一方の振動系３９を他方の振動系４１から区画す
る。Next, in order to assemble the sound insulating wall 25, the honeycomb structure 33 is sandwiched between the sound insulating plates 27 and 29, and the upper and lower portions of the honeycomb structure 33 are attached to the sound insulating plates 27 and 29 by bonding or the like. In this case, the honeycomb structure 33
Opening portions 27a, 27b, 29
The honeycomb cam structure 33 is sandwiched so that a and 29b face each other. Thereby, the wall portion 35 of the honeycomb structure 33 is formed.
, A plurality of vibration systems 39 and 41 are provided, and the partition walls 3
7 partitions one vibration system 39 from the other vibration system 41.
【００２２】ここで、遮音壁２５の一方から音が入射す
ると、その入射波は、振動系３９、４１を介して他方に
透過される。この時、入射波の周波数が振動系３９の共
振周波数を越えると、透過波の位相は１８０度反転す
る。従って、大小の２つの共振周波数を有する振動系３
９、４１を設けているこの実施例では、振動系３９の小
さい方の共振周波数を越えると透過波の位相が１８０度
ずれる。そして、遮音を目的とする音の周波数が大小の
共振周波数の間の周波数帯域に存在するように共振周波
数を形成しているため、大きな共振周波数を有する振動
系４１の透過波は位相のずれがない。従って、両振動系
３９、４１を透過した音は互いに打ち消し合い、この周
波数帯域において遮音効果が得られる。Here, when sound enters from one of the sound insulating walls 25, the incident wave is transmitted to the other through the vibration systems 39 and 41. At this time, if the frequency of the incident wave exceeds the resonance frequency of the vibration system 39, the phase of the transmitted wave is inverted by 180 degrees. Therefore, the vibration system 3 having two large and small resonance frequencies
In this embodiment provided with 9 and 41, the phase of the transmitted wave shifts by 180 degrees when the resonance frequency of the vibration system 39 exceeds the smaller resonance frequency. Since the resonance frequency is formed so that the frequency of the sound intended for sound insulation exists in the frequency band between the large and small resonance frequencies, the transmitted wave of the vibration system 41 having the large resonance frequency has a phase shift. Absent. Therefore, the sound transmitted through both vibration systems 39 and 41 cancel each other, and a sound insulation effect is obtained in this frequency band.
【００２３】本実施例の遮音壁２５によれば、ハニカム
構造体３３を遮音板２７、２９間に挟持し、ハニカム構
造体３３の両端面を遮音板２７、２９に張り付けるだけ
で製造することが出来るので、容易にかつ安価に製造す
ることが出来る。すなわち、ハニカム構造体３３は予め
壁部３５同士が接合されているので、ハニカム構造体３
３の端面のみをを遮音板２７、２９に接合するだけで遮
音壁２５を形成することが出来る。According to the sound insulating wall 25 of this embodiment, the honeycomb structure 33 can be manufactured by simply sandwiching the honeycomb structure 33 between the sound insulating plates 27 and 29 and attaching both end surfaces of the honeycomb structure 33 to the sound insulating plates 27 and 29. Since it can be manufactured, it can be easily and inexpensively manufactured. That is, since the honeycomb structure 33 has the walls 35 joined to each other in advance, the honeycomb structure 3
The sound insulation wall 25 can be formed only by joining only the end faces of the third to the sound insulation plates 27 and 29.
【００２４】また、ハニカム構造体３３を、紙で形成さ
れたいわゆるペーパーハニカムを用いることにより、製
造コストをより安価にすることが出来る。また、遮音板
２７、２９に設けた延長部３１は、開口縁からの突出量
が小さいので、プレス工法で製造することが出来、遮音
板２７、２９の製造コストを安価にすることが出来る。
さらに、ハニカム構造体３３は、面剛性すなわち、上下
の面に加わる力に対する剛性が高いので、遮音壁２５の
剛性を上げることが出来る。従って、その分遮音板２
７、２９の板厚を薄くすることが出来るため、遮音壁２
５を更に安価に製造することが出来る。Further, by using a so-called paper honeycomb formed of paper for the honeycomb structure 33, the manufacturing cost can be further reduced. Further, since the extension portions 31 provided on the sound insulating plates 27 and 29 have a small amount of protrusion from the opening edge, they can be manufactured by the press method, and the manufacturing cost of the sound insulating plates 27 and 29 can be reduced.
Further, since the honeycomb structure 33 has high surface rigidity, that is, high rigidity against the force applied to the upper and lower surfaces, the rigidity of the sound insulating wall 25 can be increased. Therefore, the sound insulation plate 2
7 and 29 can be made thinner, so that the sound insulation wall 2
5 can be manufactured more inexpensively.
【００２５】また、本実施例の遮音壁２５は、アンダー
カバー５に開口部２７ａ、２７ｂ、２９ａ、２９ｂを形
成したので、通気性を確保することができ、エンジンル
ーム内の熱気を外部へ容易に逃がすことができる。Further, since the sound insulation wall 25 of this embodiment has openings 27a, 27b, 29a and 29b formed in the under cover 5, air permeability can be ensured and hot air in the engine room can be easily discharged to the outside. You can escape.
【００２６】また、本実施例では、開口部２７ａ、２９
ａに延長部３１をそれぞれ設けて開口部２７ａ、２９ａ
の空気質量を大きくしており、これによって、開口部２
７ａ、２９ｂの空気層で形成される振動系の共振周波数
の低下が図られている。従って、本実施例の遮音壁２５
は、より低い周波数から遮音効果が得られる。In this embodiment, the openings 27a, 29
a are provided with openings 31a and 29a, respectively.
Air mass of the opening 2
The resonance frequency of the vibration system formed by the air layers 7a and 29b is reduced. Therefore, the sound insulating wall 25 of the present embodiment is used.
Can provide a sound insulation effect from lower frequencies.
【００２７】なお、本実施例では、共振周波数が異なる
２種類の振動系を設けた例を示したが、開口部の径を変
化させることにより、複数の振動系を作ることができる
のはもちろんである。In this embodiment, an example is shown in which two types of vibration systems having different resonance frequencies are provided. However, it is needless to say that a plurality of vibration systems can be produced by changing the diameter of the opening. It is.
【００２８】以下、他の実施例について説明する。な
お、第１実施例と同構成部分については、図面に同符号
を付して重複した説明を省略する。Hereinafter, another embodiment will be described. In addition, about the same component as 1st Example, the same code | symbol is attached | subjected to drawing and the overlapping description is abbreviate | omitted.
【００２９】第２実施例 図２（ａ）、（ｂ）は第２実施例の遮音壁４５を示す。
この実施例の遮音壁４５は、遮音板２７、２９とハニカ
ム構造体４７の壁部４９とで区画された空間の体積が複
数種類形成されている。すなわち、上記第１実施例のハ
ニカム構造体４７は、同形状の筒体４３を集合して形成
されていたが、本実施例のハニカム構造体４７は、大小
２種類の筒体５１、５３を集合して形成されている。Second Embodiment FIGS. 2A and 2B show a sound insulation wall 45 according to a second embodiment.
In the sound insulation wall 45 of this embodiment, a plurality of types of volumes of a space defined by the sound insulation plates 27 and 29 and the wall portion 49 of the honeycomb structure 47 are formed. That is, although the honeycomb structure 47 of the first embodiment is formed by assembling the cylindrical bodies 43 of the same shape, the honeycomb structure 47 of the present embodiment is formed by combining two types of large and small cylindrical bodies 51 and 53. It is formed collectively.
【００３０】図２（ａ）に示すように、本実施例のハニ
カム構造体４７は、断面六角形の大きい筒体５１と、小
さい筒体５３とを集合して形成されており、遮音板２
７、２９間に挟持されている。この場合、大きい筒体５
１には、開口部２７ａ、２９ｂが位置しており、開口部
２７ａ、２９ａの開口縁部に設けられた延長部３１、３
１は、大きい筒体５１内に突設されている。また、小さ
い筒体５３には、開口部２７ｂ、２９ｂが位置してい
る。そして、これらの筒体５１、５３の壁部４９により
区画壁５５が形成されて、複数の振動系５７、５９が設
けられ、所定の振動系５７を他の振動系５９から区画す
る構成となっている。As shown in FIG. 2A, the honeycomb structure 47 of the present embodiment is formed by assembling a large cylinder 51 having a hexagonal cross section and a small cylinder 53, and the sound insulating plate 2 is formed.
It is sandwiched between 7, 29. In this case, the large cylinder 5
1 are provided with openings 27a and 29b, and extended portions 31 and 3 provided on the opening edges of the openings 27a and 29a.
Reference numeral 1 protrudes from a large cylindrical body 51. Further, openings 27b and 29b are located in the small cylindrical body 53. A partition wall 55 is formed by the wall portions 49 of the cylindrical bodies 51 and 53, a plurality of vibration systems 57 and 59 are provided, and the predetermined vibration system 57 is partitioned from the other vibration systems 59. ing.
【００３１】本実施例によれば、上記第１実施例と同様
の作用効果が得られる他に、低い共振周波数から高い共
振周波数まで広い周波数帯で遮音することが出来、遮音
効果が得られる周波数帯をより広く設定することが出来
る。According to this embodiment, in addition to the same operation and effect as those of the first embodiment, sound can be blocked in a wide frequency band from a low resonance frequency to a high resonance frequency. The band can be set wider.
【００３２】すなわち、本実施例の遮音壁４５では、大
きい筒体５１に開口する開口部２７ａ、２９ａの径が開
口部２７ｂ、２９ｂの径より小さく、延長部３１が形成
されているので、振動系５７の共振周波数を低く設定し
ている。また、小さい筒体５３に開口している開口部２
７ｂ、２９ｂの径は開口部２７ａ、２９ａの径より大き
く設定されているので、共振周波数を高く設定してい
る。従って、低い共振周波数から高い共振周波数まで広
い周波数帯で遮音することが出来る。That is, in the sound insulating wall 45 of the present embodiment, the diameter of the openings 27a, 29a opening to the large cylindrical body 51 is smaller than the diameter of the openings 27b, 29b, and the extension 31 is formed. 57 is set to a low resonance frequency. In addition, the opening 2 that opens to the small cylindrical body 53
Since the diameters of 7b and 29b are set larger than the diameters of openings 27a and 29a, the resonance frequency is set higher. Therefore, sound can be shielded in a wide frequency band from a low resonance frequency to a high resonance frequency.
【００３３】第３実施例 図３（ａ）、（ｂ）は第３実施例の遮音壁６１を示す。
本実施例の遮音壁６１は、ハニカム構造体４７の大きい
筒体５１の壁部４９と遮音板２７、２９とで区画されて
略同一の振動系５７を構成する空間同士を連通する孔部
６３が壁部４９に設けられている。すなわち、ハニカム
構造体４７の隣接する大きい筒体５１を区画する壁部４
９に、筒体５１同士を連通する孔部６３を設けた例であ
る。Third Embodiment FIGS. 3A and 3B show a sound insulating wall 61 according to a third embodiment.
The sound insulation wall 61 of the present embodiment has a hole 63 that is partitioned by the wall 49 of the large cylindrical body 51 of the honeycomb structure 47 and the sound insulation plates 27 and 29 and that communicates spaces that constitute substantially the same vibration system 57. It is provided on the wall 49. That is, the wall portion 4 that partitions the adjacent large cylindrical body 51 of the honeycomb structure 47
9 is an example in which a hole 63 that connects the cylindrical bodies 51 to each other is provided.
【００３４】本実施例によれば、上記第２実施例と同様
の作用効果が得られる他に、遮音壁６１は、ハニカム構
造体４７の筒体５１内の体積に製造誤差等により多少ば
らつきがあったとしても、壁部４９に孔部６３が設けら
れているので、隣接する筒体５１と遮音板２７、２９と
で形成される振動系５７が連成して、同一の共振周波数
を持つことが出来る。従って、本実施例の遮音壁６１
は、小さい筒体５３の開口部２７ｂ、２９ｂとからなる
振動系５９と、上記振動系５７の共振周波数を２種類に
確実に分けることが出来、目的とする遮音性能を十分発
揮することが出来る。According to the present embodiment, in addition to obtaining the same operation and effect as in the second embodiment, the volume of the sound insulating wall 61 in the cylindrical body 51 of the honeycomb structure 47 varies somewhat due to manufacturing errors and the like. Even so, since the hole portion 63 is provided in the wall portion 49, the vibration system 57 formed by the adjacent cylinder 51 and the sound insulating plates 27 and 29 is coupled to have the same resonance frequency. Can be done. Therefore, the sound insulating wall 61 of the present embodiment
Can reliably divide the resonance frequency of the vibration system 59 composed of the openings 27b and 29b of the small cylinder 53 and the resonance frequency of the vibration system 57 into two types, and can sufficiently exhibit the intended sound insulation performance. .
【００３５】第４実施例 図４（ａ）、（ｂ）は第４実施例の遮音壁６５を示す。
この遮音壁６５は、前記第２実施例と遮音板２７、２９
の構造が異なる。すなわち、本実施例の遮音壁６５を構
成する遮音板２７、２９の開口部２７ｂ、２９ｂの周囲
には、ハニカム構造体４７の小さい筒体５３の開口に嵌
合する突壁部６７が形成されている。図４（ａ）、
（ｂ）に示すように、開口部２７ｂ、２９ｂの周囲に設
けられた突壁部６７は、外周に、ハニカム構造体４７の
小さい筒体５３の開口に嵌まり合う嵌合面６９と、この
嵌合面６９から中心に向けて設けられた傾斜面７１とが
形成されている。また、突壁部６７の内部には、開口部
２７ｂ、２９ｂと同径の貫通孔７３が形成されている。
そして、この突壁部６７は、図５に示すように、嵌合面
６９が小さい筒体５３の開口５３ａに嵌まり合うことに
よりハニカム構造体４７と遮音板２７、２９とを接合す
ることが出来る。Fourth Embodiment FIGS. 4A and 4B show a sound insulation wall 65 of a fourth embodiment.
The sound insulating wall 65 is the same as the sound insulating plates 27 and 29 of the second embodiment.
Structure is different. That is, around the openings 27b and 29b of the sound insulation plates 27 and 29 constituting the sound insulation wall 65 of the present embodiment, a protruding wall portion 67 that fits into the opening of the small cylindrical body 53 of the honeycomb structure 47 is formed. I have. FIG. 4 (a),
As shown in (b), the protruding wall 67 provided around the openings 27b and 29b has, on the outer periphery, a fitting surface 69 that fits into the opening of the small cylindrical body 53 of the honeycomb structure 47, and An inclined surface 71 provided from the fitting surface 69 toward the center is formed. Further, a through hole 73 having the same diameter as the openings 27b, 29b is formed inside the protruding wall 67.
As shown in FIG. 5, the projecting wall portion 67 joins the honeycomb structure 47 and the sound insulation plates 27 and 29 by fitting the fitting surface 69 into the opening 53 a of the small cylindrical body 53. I can do it.
【００３６】本実施例によれば、上記第２実施例と同様
の作用効果が得られる他に、遮音板２７、２９の開口部
２７ｂ、２９ｂの周囲に突壁部６７を設けたことによ
り、この突壁部６７をハニカム構造体４７の小さい筒体
５３の開口５３ａに押し込んで嵌合することにより、遮
音板２７、２９とハニカム構造体４７とを容易に接合す
ることが出来る。従って、遮音壁６５を安価に製造する
ことが出来、製造コストを低減することが出来る。According to the present embodiment, in addition to obtaining the same operation and effect as the second embodiment, the projecting wall 67 is provided around the openings 27b and 29b of the sound insulating plates 27 and 29. By pressing the protruding wall portion 67 into the opening 53a of the small cylindrical body 53 of the honeycomb structure 47 and fitting the same, the sound insulating plates 27 and 29 and the honeycomb structure 47 can be easily joined. Therefore, the sound insulating wall 65 can be manufactured at low cost, and the manufacturing cost can be reduced.
【００３７】なお、本実施例では、大小２つの筒体５
１、５３からなるハニカム構造体４７の小さい筒体５３
に嵌合する突壁部６７を開口部２７ｂ、２９ｂの周囲に
設けたが、大きい筒体５１に嵌合する突壁部を開口部２
７ａ、２９ａの周囲に設けても良い。また、第１実施例
で示したハニカム構造体３３の筒体４３に嵌合する突壁
部６７を開口部２７ｂ、２９ｂの周囲に設けても良い。
さらに、第３実施例で示したハニカム構造体４７の筒体
５１、５３に嵌合する突壁部６７を開口部２７ａ、２９
ａ、２７ｂ、２９ｂの周囲に設けても良い。In this embodiment, two large and small cylinders 5 are used.
Small cylindrical body 53 of honeycomb structure 47 composed of 1, 53
Is provided around the openings 27b and 29b, but the projecting wall fitted to the large cylindrical body 51 is
It may be provided around 7a and 29a. Further, a protruding wall portion 67 that fits into the cylindrical body 43 of the honeycomb structure 33 shown in the first embodiment may be provided around the openings 27b and 29b.
Further, the protruding wall portions 67 fitted to the cylindrical bodies 51, 53 of the honeycomb structure 47 shown in the third embodiment are formed with the openings 27a, 29.
a, 27b, and 29b.
【００３８】第５実施例 図６は第５実施例の遮音壁７５を示す。本実施例の遮音
壁７５は、第１実施例のハニカム構造体４７と遮音板２
７、２９との間に軟質材料７７を設けて、遮音板２７、
２９とハニカム構造体３３の上下の端面との間を隙間な
く接合した例である。Fifth Embodiment FIG. 6 shows a sound insulation wall 75 according to a fifth embodiment. The sound insulating wall 75 of the present embodiment includes the honeycomb structure 47 of the first embodiment and the sound insulating plate 2.
7 and 29, a soft material 77 is provided,
This is an example in which the upper and lower end faces of the honeycomb structure 33 are joined without gaps.
【００３９】図６に示すように、ハニカム構造体３３の
両端面と遮音板２７、２９との間には、発泡ウレタン等
の軟質材料７７が挟持されている。この軟質材料７７に
は、開口２７ｂ、２９ｂと略等しい内壁の貫通孔、及び
延長部３１の外径と等しい内径の貫通孔がそれぞれ形成
されている。As shown in FIG. 6, a soft material 77 such as urethane foam is sandwiched between both end faces of the honeycomb structure 33 and the sound insulating plates 27 and 29. In the soft material 77, a through hole having an inner wall substantially equal to the openings 27b and 29b and a through hole having an inner diameter equal to the outer diameter of the extension portion 31 are respectively formed.
【００４０】本実施例によれば、第１実施例と同様の作
用効果を有する他に、ハニカム構造体３３の両端面と遮
音板２７、２９との間に、軟質材料７７が挟み込まれて
いるので、ハニカム構造体３３の両端面と遮音板２７、
２９との間の隙間の発生を防止することが出来、一方の
振動系３９と他方の振動系４１との間を音響的に確実に
隔絶することが出来、遮音性能を十分に発揮することが
出来る。According to this embodiment, in addition to having the same operation and effect as the first embodiment, a soft material 77 is sandwiched between both end faces of the honeycomb structure 33 and the sound insulating plates 27 and 29. Therefore, both end faces of the honeycomb structure 33 and the sound insulating plate 27,
29 can be prevented, the one vibration system 39 and the other vibration system 41 can be acoustically isolated reliably, and the sound insulation performance can be sufficiently exhibited. I can do it.
【００４１】なお、本実施例では、ハニカム構造体３３
と遮音板２７、２９との間に軟質材料７７を挟み込んだ
が、図２、図３、図４に示すハニカム構造体４７と遮音
板２７、２９との間に軟質材料７７を挟み込むことによ
り、各遮音壁４５、６１、６５の遮音性能をより向上す
ることが出来る。In this embodiment, the honeycomb structure 33 is used.
Although the soft material 77 is sandwiched between the sound insulating plates 27 and 29, the soft material 77 is sandwiched between the honeycomb structure 47 and the sound insulating plates 27 and 29 shown in FIG. 2, FIG. 3, and FIG. The sound insulation performance of the sound insulation walls 45, 61, 65 can be further improved.
【００４２】[0042]
【発明の効果】以上説明したように請求項１の発明によ
れば、ハニカム構造体を遮音板間に挟持して、ハニカム
構造体の壁部で区画壁を形成したので、遮音壁の遮音性
能を保ちながら、容易に、且つ安価に製造することが出
来、製造コストを低減することが出来る。As described above, according to the first aspect of the present invention, since the honeycomb structure is sandwiched between the sound insulating plates and the partition wall is formed by the walls of the honeycomb structure, the sound insulating performance of the sound insulating wall is improved. It is possible to manufacture easily and inexpensively while maintaining the same, and to reduce the manufacturing cost.
【００４３】また、遮音板の開口部の周囲に、ハニカム
構造体の開口に嵌合する突壁部を設けたことにより、遮
音板間にハニカム構造体を組み付ける場合、突壁部をハ
ニカム構造体の開口に押し込むことにより、容易に組み
付けることが出来る。Further, by providing a projecting wall portion which fits into the opening of the honeycomb structure around the opening of the sound insulating plate, when the honeycomb structure is assembled between the sound insulating plates, the projecting wall portion is connected to the honeycomb structure. By pushing it into the opening, it can be easily assembled.
【００４４】請求項２の発明によれば、ハニカム構造体
の壁部と２枚の遮音板とで区画された空間の体積を、複
数種類形成することにより、複数種類の振動系を構成す
ることが出来、遮音効果が得られる。According to the second aspect of the present invention, a plurality of types of vibration systems are formed by forming a plurality of types of volumes of a space defined by the wall of the honeycomb structure and the two sound insulating plates. And a sound insulation effect is obtained.
【００４５】また、ハニカム構造体の壁部に孔部を設け
て、略同一の振動系を構成することにより、略同一の振
動系が連成して、同一の共振周波数を持つことが出来
る。よって、２種類の共振周波数を確実に分けることが
出来、遮音性能を十分発揮することが出来る。Further, by forming holes in the wall of the honeycomb structure to form substantially the same vibration system, substantially the same vibration systems can be coupled to have the same resonance frequency. Therefore, the two types of resonance frequencies can be reliably separated, and the sound insulation performance can be sufficiently exhibited.
【００４６】さらに、ハニカム構造体と遮音板との間
に、軟質材料を設けることにより、ハニカム構造体と遮
音板とを隙間なく接合することが出来る。よって、遮音
板とハニカム構造体の壁部とで形成した空間を他の空間
と音響的に確実に隔絶することが出来、遮音性能を向上
することが出来る。Further, by providing a soft material between the honeycomb structure and the sound insulating plate, the honeycomb structure and the sound insulating plate can be joined without any gap. Therefore, the space formed by the sound insulating plate and the wall of the honeycomb structure can be acoustically isolated from the other space reliably, and the sound insulating performance can be improved.
【図１】本発明の第１実施例の遮音壁を示し、（ａ）は
遮音板を接合する前の状態を示す斜視図、（ｂ）は遮音
板間にハニカム構造体を挟持した状態を示す斜視図であ
る。1A and 1B show a sound insulating wall according to a first embodiment of the present invention, wherein FIG. 1A is a perspective view showing a state before a sound insulating plate is joined, and FIG. 1B is a view showing a state in which a honeycomb structure is sandwiched between the sound insulating plates. It is a perspective view.
【図２】本発明の第２実施例の遮音壁を示し、（ａ）は
遮音板を接合する前の状態を示す斜視図、（ｂ）は遮音
板間にハニカム構造体を挟持した状態を示す斜視図であ
る。FIGS. 2A and 2B show a sound insulating wall according to a second embodiment of the present invention, wherein FIG. 2A is a perspective view showing a state before a sound insulating plate is joined, and FIG. 2B is a state showing a honeycomb structure sandwiched between the sound insulating plates. It is a perspective view.
【図３】本発明の第３実施例の遮音壁を示し、（ａ）は
遮音板を接合する前の状態を示す斜視図、（ｂ）は遮音
板間にハニカム構造体を挟持した状態を示す斜視図であ
る。3A and 3B show a sound insulating wall according to a third embodiment of the present invention, wherein FIG. 3A is a perspective view showing a state before a sound insulating plate is joined, and FIG. 3B is a view showing a state where a honeycomb structure is sandwiched between the sound insulating plates. It is a perspective view.
【図４】本発明の第４実施例の遮音壁を示し、（ａ）は
遮音板を接合する前の状態を示す斜視図、（ｂ）は遮音
板間にハニカム構造体を挟持した状態を示す斜視図であ
る。4A and 4B show a sound insulating wall according to a fourth embodiment of the present invention, wherein FIG. 4A is a perspective view showing a state before a sound insulating plate is joined, and FIG. 4B is a view showing a state in which a honeycomb structure is sandwiched between the sound insulating plates. It is a perspective view.
【図５】第４実施例の遮音壁を示す断面図である。FIG. 5 is a sectional view showing a sound insulating wall according to a fourth embodiment.
【図６】本発明の第５実施例の遮音壁を示す断面図であ
る。FIG. 6 is a sectional view showing a sound insulating wall according to a fifth embodiment of the present invention.
【図７】アンダーカバーを設けた自動車の概略側面図で
ある。FIG. 7 is a schematic side view of an automobile provided with an under cover.
【図８】アンダーカバーを設けた自動車の概略底面図で
ある。FIG. 8 is a schematic bottom view of an automobile provided with an under cover.
【図９】従来の遮音壁を示す斜視図である。FIG. 9 is a perspective view showing a conventional sound insulation wall.
【図１０】従来の遮音壁を示す断面図である。FIG. 10 is a sectional view showing a conventional sound insulating wall.
２５、４５、６１、６５ 遮音壁 ２７、２９ 遮音板 ２７ａ、２７ｂ 開口部 ２９ａ、２９ｂ 開口部 ３３、４７ ハニカム構造体 ３５、４９ 壁部 ３７、５５ 区画壁 ３９、４０、５７、５９ 振動系 ４３、５１、５３ 筒体 ６３ 孔部 ６７ 突壁部 25, 45, 61, 65 Sound insulation wall 27, 29 Sound insulation plate 27a, 27b Opening 29a, 29b Opening 33, 47 Honeycomb structure 35, 49 Wall 37, 55 Partition wall 39, 40, 57, 59 Vibration system 43, 51, 53 cylindrical body 63 hole 67 projecting wall
フロントページの続き (56)参考文献 特開 平２−71300（ＪＰ，Ａ) 特開 昭61−249853（ＪＰ，Ａ) 実開 昭63−14300（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G10K 11/16 - 11/175 B60R 13/08 B62D 25/20 Continuation of the front page (56) References JP-A-2-71300 (JP, A) JP-A-61-249853 (JP, A) JP-A-63-14300 (JP, U) (58) Fields investigated (Int) .Cl. 7 , DB name) G10K 11/16-11/175 B60R 13/08 B62D 25/20
Claims (2)
遮音板と、 前記遮音板に貫通して設けられ、互いに対向する開口部
を有し、 前記開口部の空気質量と前記遮音板間の空気層の空気ば
ねとでなる振動系を複数種備え、 一方の振動系と他方の振動系とを区画壁で区画する遮音
壁構造において、 ハニカム構造体を遮音板間に挟持して、ハニカム構造体
の壁部で前記区画壁を形成し、 前記遮音板の前記開口部の周囲に、前記ハニカム構造体
の開口に嵌合する突壁部を設けて、前記遮音板間にハニ
カム構造体を挟持 したことを特徴とする遮音壁構造。At least two sound insulation plates facing each other at an interval, and openings provided through the sound insulation plate and facing each other, and a space between the air mass of the opening and the sound insulation plate is provided. In a sound insulation wall structure including a plurality of vibration systems including an air spring of an air layer, and one vibration system and the other vibration system are partitioned by a partition wall, the honeycomb structure is sandwiched between sound insulation plates to form a honeycomb structure. The partition wall is formed by the partition wall, and the honeycomb structure is formed around the opening of the sound insulating plate.
Protruding wall portions that fit into the openings of the
A sound insulating wall structure characterized by sandwiching a cam structure .
遮音板と、 前記遮音板に貫通して設けられ、互いに対向する開口部
を有し、 前記開口部の空気質量と前記遮音板間の空気層の空気ば
ねとでなる振動系を複数種備え、 一方の振動系と他方の振動系とを区画壁で区画する遮音
壁構造において、 ハニカム構造体を遮音板間に挟持して、ハニカム構造の
壁部で前記区画壁を形成し、 前記ハニカム構造体の壁部と、２枚の遮音板とで区画さ
れた空間の体積を複数種設定し、 前記ハニカム構造体の壁部と前記２枚の遮音板とで区画
されて略同一の振動系を構成する空間同士を連通する孔
部を前記壁部に設け、 前記遮音板とハニカム構造との間に、軟質材料を設け
て、遮音板とハニカム構造体との間を隙間なく接合させ
る ことを特徴とする遮音壁構造。2. At least two sheets facing each other at an interval
A sound insulating plate, and openings provided through the sound insulating plate and facing each other.
Having an air mass in the air layer between the air mass of the opening and the sound insulating plate.
Equipped with multiple types of oscillating systems, sound insulation that separates one oscillating system and the other oscillating system with a dividing wall
In a wall structure, a honeycomb structure is sandwiched between sound insulation plates to form a honeycomb structure.
The partition wall is formed by a wall portion, and the partition wall is partitioned by the wall portion of the honeycomb structure and two sound insulating plates.
A plurality of types of volumes of the separated space, and partitioned by the wall of the honeycomb structure and the two sound insulating plates.
Holes that connect the spaces that make up substantially the same vibration system
Part is provided on the wall part, and a soft material is provided between the sound insulating plate and the honeycomb structure.
Between the sound insulation plate and the honeycomb structure without gaps.
Sound insulating wall structure, characterized in that that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16703994A JP3158876B2 (en) | 1994-07-19 | 1994-07-19 | Sound insulation wall structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16703994A JP3158876B2 (en) | 1994-07-19 | 1994-07-19 | Sound insulation wall structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0830277A JPH0830277A (en) | 1996-02-02 |
| JP3158876B2 true JP3158876B2 (en) | 2001-04-23 |
Family
ID=15842259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16703994A Expired - Lifetime JP3158876B2 (en) | 1994-07-19 | 1994-07-19 | Sound insulation wall structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3158876B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102708853A (en) * | 2012-05-15 | 2012-10-03 | 北京交通大学 | Three-dimensional phonon functional material structure comprising resonance units and manufacturing method thereof |
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1994
- 1994-07-19 JP JP16703994A patent/JP3158876B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102708853A (en) * | 2012-05-15 | 2012-10-03 | 北京交通大学 | Three-dimensional phonon functional material structure comprising resonance units and manufacturing method thereof |
| CN102708853B (en) * | 2012-05-15 | 2014-05-28 | 北京交通大学 | Three-dimensional phonon functional material structure comprising resonance units and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0830277A (en) | 1996-02-02 |
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