JP2016169537A - Soundproof screen - Google Patents
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Abstract
Description
本発明は防音衝立に関する。とくに、複数の防音衝立を連結する構造に関する。 The present invention relates to a soundproofing screen. In particular, the present invention relates to a structure for connecting a plurality of soundproof screens.
工事現場で使用される建設機械からは様々な周波数帯の騒音が放射される。現場周辺の地域住民に対する環境配慮は益々重要な位置にある。騒音対策はその中でも重要である。防音パネルを騒音源の周囲に配置する移動自在な衝立式は、騒音対策として有効である。しかしながら、騒音源の周囲を取り囲むために、複数の防音パネルを簡易に組立てる手段が無かった。騒音対策は屋外だけでなく室内でも同じである。 Construction machinery used at construction sites emits noise in various frequency bands. Environmental considerations for local residents around the site are increasingly important. Noise countermeasures are important among them. A movable screen type in which a soundproof panel is arranged around a noise source is effective as a noise countermeasure. However, there is no means for easily assembling a plurality of soundproof panels to surround the periphery of the noise source. Noise countermeasures are the same not only outdoors but also indoors.
防音パネルに要求される条件は、設置解体が簡単であり、移動が自在である、軽量薄型で自立性がある、倒れない、内外からの可視化ができる、安全性が高い、高さが低い、広域周波数帯音を低減できる、平坦でない現場に対応できる、保管時は平パネルに回帰できる構造等を具備していることが求められる。しかしながら従来技術にはこれら全てに対応できる製品がない。 The conditions required for the soundproof panel are simple installation and disassembly, freedom of movement, lightweight and thin, self-supporting, can not fall down, can be visualized from inside and outside, high safety, low height, It is required to have a structure that can reduce a wide frequency band sound, can cope with a non-flat site, and can be returned to a flat panel during storage. However, there is no product that can handle all of these in the prior art.
とくに、設置解体が簡単にできる構造が強く求められている。防音パネルを衝立式にして設置できるためには複数の防音パネル同士を簡単に、かつ確実に連結できる手段が必要である。従来用いられている連結手段について文献を調べると、パネルの少なくとも上端面に凹入溝を形成するとともに、側端面同士を突き合わせた２枚のパネルの凹入溝にまたがって、緊締板を嵌合して、緊締板を固定する方法が提案されている In particular, there is a strong demand for a structure that can be easily disassembled. In order to install the soundproof panels in a screened manner, a means for easily and reliably connecting a plurality of soundproof panels is necessary. According to the literature on the connecting means used in the past, a recessed groove is formed on at least the upper end surface of the panel, and the tightening plate is fitted across the recessed groove of the two panels where the side end surfaces are butted together. And a method of fixing the tightening plate has been proposed
しかし、この方法は平面でない地面の上では使えない。高い防音パネルの上端面に緊締板を固定せねばならないので、使い勝手が悪い。また、固定するために複雑な機構を必要とするという難点があった。（特開平３−１２９０３０） However, this method cannot be used on non-planar ground. Since the fastening plate must be fixed to the upper end surface of the high soundproof panel, it is inconvenient. In addition, there is a problem that a complicated mechanism is required for fixing. (Japanese Patent Laid-Open No. 3-129030)
また、パネルの枠体の要所に、互いに等高をなす横長の挿通孔を穿設して、両縦枠杆同士で連通する挿通孔に、横長の連結板を挿通して、連結板は一端に設けたストッパにより停止し、他方の縦枠より突出した連結板の他端の係止部において、締付ハンドルの先端近くに設けた係合溝を係合して、締付ハンドルを係止部のまわりに回動させることで締め付けて固定するものが提案されていた。 In addition, a horizontally long insertion hole having the same height is drilled at a key point of the frame of the panel, and the horizontally long connecting plate is inserted into the insertion hole communicating with both vertical frame ridges. Stop by the stopper provided at one end, and engage the engagement groove provided near the tip of the tightening handle at the other end of the connecting plate protruding from the other vertical frame to engage the tightening handle. There has been proposed one that is fastened and fixed by rotating around a stop.
しかし、この方法はパネルを連結する位置が固定しているので、平面でない地面の上では使えない。また、パネルの枠材の内側からアクセスする方法なので、パネルの枠材が囲んでいて隙間がないような場合は使えないという問題があった。（実開平５−３４１２） However, this method cannot be used on non-planar ground because the positions where the panels are connected are fixed. In addition, since the method is accessed from the inside of the frame material of the panel, there is a problem that it cannot be used when the frame material of the panel is surrounded and there is no gap. (Actual Japanese Utility Model Publication 5-3412)
その他に市販の蝶番を利用した連結方法もあるが、いずれも、取り外しが自在である、工具の使用の必要がない、平らでない土地でも対応ができる、解体時に平らなパネルに戻せるなどの要求に対して改善の余地がある。
There are also other connecting methods using commercially available hinges, but all of them can be removed, do not require the use of tools, can be used on uneven terrain, and can be returned to a flat panel during dismantling. There is room for improvement.
１．平らでない地面、または床であっても複数連結して設置できる防音衝立の連結構造を実現すること。
２．複数の防音衝立を連結して強固に固定でき、設置解体が簡単であり、移動してもグラつかない、解体後は単体にできる防音衝立の連結構造を実現すること。
３．高さ２ｍ程度、上部開放の衝立方式による騒音低減は、現状品では５ｄＢ前後であり、しかも工事機器が放射する低周波を含む広い周波数帯騒音の低減ができない。これに対して、騒音低減量１５〜２０ｄＢを実現することが課題である。
1. Realize a soundproof screen connection structure that can be installed on multiple uneven surfaces or floors.
2. Realize a soundproof screen connecting structure that can connect and firmly fix multiple soundproof screens, is easy to install and dismantle, and does not scatter even when moved.
3. Noise reduction by a partition system with a height of about 2 m and an open top is around 5 dB in the current product, and it is not possible to reduce wide frequency band noise including low frequencies radiated by construction equipment. On the other hand, it is a problem to realize a noise reduction amount of 15 to 20 dB.
騒音を遮る防音衝立であって、
該防音衝立の左右の側面の複数個所に逆Ｌ字形状の切り込みを入れ、
複数の該防音衝立を連結するとき、隣り合う同じ形状の該防音衝立の、該逆Ｌ字形状の切り込みによって形成される柱状部同士を連結具によって連結することで、該逆Ｌ字形状の切り込み長さの範囲で、地面または床の高さの差が有っても設置できる構造であることを特徴とする防音衝立である。
A soundproofing screen that blocks noise,
Inverted L-shaped cuts are made at several locations on the left and right sides of the soundproofing screen
When connecting a plurality of the soundproof screens, the columnar portions formed by the inverted L-shaped cuts of the adjacent soundproof screens of the same shape are connected by a connecting tool, thereby the reverse L-shaped cuts. The soundproofing screen is characterized in that it can be installed even if there is a difference in the height of the ground or floor in the range of length.
また、上記の防音衝立であって、左右の側面の少なくとも一方に形成された該逆Ｌ字形状の切り込みによって形成される柱状部の幅が該防音衝立の縁部の厚さに略等しいことを特徴とする防音衝立である。 Further, in the above soundproofing partition, the width of the columnar part formed by the inverted L-shaped notch formed on at least one of the left and right side surfaces is substantially equal to the thickness of the edge of the soundproofing partition. It is a characteristic soundproofing screen.
防音衝立を複数連結する場合、隣り合う逆Ｌ字形状の切り込みは対称に並ぶので、上から見たとき、逆Ｌ字形状の切り込みによって形成される２つの柱状部は段差なく並んで１つの長方形をなすので、上から長方形の連結具を嵌め込むことによって、連結することができる。 When multiple soundproof screens are connected, adjacent inverted L-shaped cuts are arranged symmetrically, so that when viewed from above, the two columnar parts formed by the inverted L-shaped cuts are lined up without a step and form a single rectangle. Therefore, it can be connected by fitting a rectangular connector from above.
逆Ｌ字形状の縦方向の切り込みに沿って、隣り合う防音衝立を連結する連結具の縦方向の位置が変更できるので、地面が平らで無い場合も、連結具を相対的に異なる高さ位置で固定できるので、防音衝立の高さ方向の位置を調整して、地面に合わせることができる。 Since the vertical position of the connecting tool that connects the adjacent soundproof screens can be changed along the vertical cut of the inverted L shape, the connecting tool can be positioned at a relatively different height even when the ground is not flat. Because it can be fixed with, you can adjust the height direction position of the soundproofing screen and match it with the ground.
また、逆Ｌ字形状の切り込みによって形成される柱状部の幅が該防音衝立の縁部の厚さに略等しいので、隣り合う防音衝立を直角方向に連結したときでも、柱状部が段差なく並んで長方形をなすので、直線状に連結する場合と同じように連結具で連結することができる。 Further, since the width of the columnar portion formed by the inverted L-shaped notch is substantially equal to the thickness of the edge of the soundproofing partition, the columnar portions are arranged without any step even when adjacent soundproofing screens are connected in a right angle direction. Since it forms a rectangle, it can be connected with a connector in the same manner as when connecting in a straight line.
防音衝立同士を突き合わせる端面（厚さ方向の面）は、防音衝立の平面に対して直角な平滑面となっているので、連結具の寸法と連結具が収まる防音衝立の逆Ｌ字形状の切り込みによって形成される柱状部寸法の差を適当に選べば、連結具によって合わせ面の隙間を最小限にして連結されるので、直線状または直角が保たれて使用時や移動時のグラツキが防止できる。 The end face (surface in the thickness direction) that abuts the soundproofing screens is a smooth surface perpendicular to the plane of the soundproofing screens, so that the dimensions of the connecting tool and the inverted L shape of the soundproofing screen that fits the connecting tool If the difference in the size of the columnar part formed by the notch is selected appropriately, the connecting tool can be connected with a minimum gap between the mating surfaces, so that straight lines or right angles are maintained, preventing glitches during use and movement. it can.
逆Ｌ字形状の切り込みによって形成される柱状部に上から連結具を嵌め込むだけで、工具を使用せず防音衝立が連結できるため、組立・解体が簡単である。また、連結を解いて解体すれば平面上の防音衝立単体に戻るので重ねることができてかさばらない。
Since the soundproofing screen can be connected without using a tool by simply fitting the connecting tool from above into the columnar part formed by the inverted L-shaped cut, assembly and disassembly is easy. Also, if the connection is broken and dismantled, it will return to the soundproof screen on a flat surface, so it can be stacked and not bulky.
図に従って実施例１を説明する。図６は、逆Ｌ字形状の切り込み部１１が加工される前の防音衝立の正面形状（ａ）とＡＡ’線上における断面図（ｂ）である。防音パネル１２は縦の寸法が２０００ｍｍ程度、横の寸法が１０００ｍｍ程度の長方形である。この寸法は一例であり、これに限定するものではない。防音パネル１２の厚みは例えば３３ｍｍであるが、これに限定するものではない。枠材１３の断面形状はコ字形状で、防音パネル１２の端部を３方から包んで、４辺に沿って設置されている。厚み３３ｍｍの防音パネル１２と組み合わせて使う枠材１３の厚み方向の寸法は３６ｍｍである。 Example 1 will be described with reference to the drawings. FIG. 6 is a front view (a) and a cross-sectional view (b) on the AA ′ line of the soundproofing partition before the inverted L-shaped cut portion 11 is processed. The soundproof panel 12 is a rectangle having a vertical dimension of about 2000 mm and a horizontal dimension of about 1000 mm. This dimension is an example and the present invention is not limited to this. The thickness of the soundproof panel 12 is, for example, 33 mm, but is not limited thereto. The cross-sectional shape of the frame member 13 is a U-shape, and the soundproof panel 12 is installed along four sides by covering the end of the soundproof panel 12 from three directions. The dimension in the thickness direction of the frame member 13 used in combination with the soundproof panel 12 having a thickness of 33 mm is 36 mm.
図１は防音衝立１の斜視図である。防音衝立１は、防音パネル１２とその縁に沿って配置された枠材１３からなる。防音衝立１の側面は、衝立をなす平面に対して直角をなし、凹凸などのない平滑な面をなしている。図６の加工前の防音パネル１２に対して、防音衝立１には、図１で示すような逆Ｌ字形状の切り込み部１１が左右の縦方向の側面の同じ高さの位置に複数個所、この実施例では２個所づつ加工されている。 FIG. 1 is a perspective view of the soundproofing partition 1. The soundproofing partition 1 includes a soundproofing panel 12 and a frame member 13 disposed along the edge thereof. The side surface of the soundproofing partition 1 is perpendicular to the plane that forms the partition, and is a smooth surface without irregularities. In contrast to the soundproof panel 12 before processing in FIG. 6, the soundproofing partition 1 has a plurality of inverted L-shaped cut portions 11 as shown in FIG. 1 at the same height on the left and right vertical side surfaces, In this embodiment, two portions are processed.
逆Ｌ字形状とは、側面から水平に切り込んで、一定の深さ（正面から見た時に幅方向の距離）に達した個所で下向きに一定の長さ（正面から見た時に高さ方向の距離）だけ切り込んだものである。ここで防音衝立１の縁の部分の厚さはＤである。（ここでは、図６と同じように、枠材１３は逆Ｌ字形状の切り込み部１１とは関係無く、長方形をなす防音衝立１の４辺をそれぞれ一定の幅で取り囲んでいるように図示してある。） Inverted L-shape is a horizontal cut from the side and reaches a certain depth (distance in the width direction when viewed from the front) and a certain length downward (in the height direction when viewed from the front). (Distance). Here, the thickness of the edge portion of the soundproofing partition 1 is D. (Here, as in FIG. 6, the frame member 13 is illustrated so as to surround each of the four sides of the rectangular soundproof partition 1 with a constant width, regardless of the inverted L-shaped cut portion 11. )
図７は、防音パネル１２の複数の材料が積層された内部構造を示した一部分の断面図である。ハニカム１２１の各セルの内部には図で下から９０％程度の高さまで硬質フォーム材１２２が充填されている。硬質フォーム材は圧縮強度の高い連通発泡構造である。ハニカム１２１の上側には接着剤１２５によってアルミニウム繊維１２４からなる吸音材が接着してある。ハニカム１２１の下側と硬質フォーム材１２２の底面には接着剤１２５によってアルミニウム板１２３である反射板が接着してある。 FIG. 7 is a partial cross-sectional view showing an internal structure in which a plurality of materials of the soundproof panel 12 are laminated. The inside of each cell of the honeycomb 121 is filled with a hard foam material 122 to a height of about 90% from the bottom in the figure. The rigid foam material has a continuous foam structure with high compressive strength. A sound absorbing material made of aluminum fibers 124 is bonded to the upper side of the honeycomb 121 by an adhesive 125. A reflector, which is an aluminum plate 123, is bonded to the lower side of the honeycomb 121 and the bottom surface of the rigid foam material 122 with an adhesive 125.
図７で上方向から防音パネル１２に侵入した騒音は、多孔材であるアルミニウム繊維１２４の層で吸収され、硬質フォーム材１２２の層で吸収または遮断される。すなわちアルミニウム繊維１２４および硬質フォーム材１２２は吸音層として働く。図７で下方向から防音パネル１２に向かう騒音はアルミニウム板１２３で反射される。 The noise that has entered the soundproof panel 12 from above in FIG. 7 is absorbed by the layer of aluminum fiber 124 that is a porous material, and is absorbed or blocked by the layer of rigid foam material 122. That is, the aluminum fiber 124 and the rigid foam material 122 function as a sound absorbing layer. In FIG. 7, noise from the lower direction toward the soundproof panel 12 is reflected by the aluminum plate 123.
図１、図６に示した枠材１３は、防音パネル１２が図７の構造であるので機械的な強度が低く、また端部が痛みやすいので、保護するためのものである。枠材１３はアルミニウムなどのチャンネルからなる。材質はこれに限定されるものではない。 The frame member 13 shown in FIG. 1 and FIG. 6 is for protecting the soundproof panel 12 because it has the structure shown in FIG. The frame member 13 is made of a channel such as aluminum. The material is not limited to this.
図４は２つの防音衝立１を直線状に並べた状態を示している。左側を防音衝立１ａ、右側を防音衝立１ｂと呼ぶものとする。図では見易さのために左右の防音衝立１の間をわずかに空けてあるが、実際には２つの防音衝立１の間はぴったり接触しており、隙間は無い。２つの防音衝立１の切り込み部１１の開口部１１２はそれぞれの側面で、同じ高さに有るので、お互いに対向している。 FIG. 4 shows a state in which two soundproof partitions 1 are arranged in a straight line. The left side is called the soundproofing partition 1a, and the right side is called the soundproofing partition 1b. In the figure, the left and right soundproofing partitions 1 are slightly spaced for easy viewing, but in reality, the two soundproofing partitions 1 are in close contact with each other and there is no gap. Since the openings 112 of the cut portions 11 of the two soundproof screens 1 are at the same height on each side, they face each other.
図４で、丸で囲んだ部分を拡大して詳細を示したのが図３（ａ）である。切り込み部１１の開口部１１２が同じ位置で対向していることが見て取れる。ここで、左側の防音衝立１ａの柱状部１１１と右側の防音衝立１ｂの柱状部１１１はぴったり接触して、図で上から見る時、一体となり一つの長方形をなしている。したがって、適切な内のり長さの長方形の連結具２を柱状部１１１の上から嵌め込めば、２つの柱状部１１１は連結され、すなわち２つの防音衝立１ａ、防音衝立１ｂが連結できる。 FIG. 3A shows the details of the encircled portion shown in FIG. It can be seen that the openings 112 of the notch 11 face each other at the same position. Here, the columnar part 111 of the left soundproofing partition 1a and the columnar part 111 of the right soundproofing partition 1b are in close contact with each other, and when viewed from above, form a single rectangle. Therefore, if the rectangular connecting tool 2 having an appropriate inner length is fitted from above the columnar portion 111, the two columnar portions 111 are connected, that is, the two soundproof partitions 1a and the soundproof partitions 1b can be connected.
ここで、防音衝立１ａの柱状部１１１の幅ｄ１は、防音衝立１の縁の部分の厚さＤと同一である。防音衝立１ｂの柱状部１１１の幅は、防音衝立１の縁の部分の厚さと同一であってもよいし、または異なる長さであってもよい。 Here, the width d1 of the columnar portion 111 of the soundproofing partition 1a is the same as the thickness D of the edge portion of the soundproofing partition 1. The width of the columnar portion 111 of the soundproofing screen 1b may be the same as the thickness of the edge portion of the soundproofing screen 1 or may be a different length.
図２は連結具２の見取図である。図２（ａ）は金属やプラスチックなどの変形しない材料で製作された長方形の枠をなす連結具２ａである。長辺方向の内のり長さＬ１の寸法が、図３に示した左側の防音衝立１ａの柱状部１１１の幅ｄ１と右側の防音衝立１ｂの柱状部１１１の幅ｄ２の和に等しく、また短辺方向の内のり長さＬ２の寸法が防音衝立１の厚みに等しく、さらにそれぞれ若干のはめあい寸法を加えた寸法に製作されており、図３に示したように、並んだ２つの柱状部１１１に嵌め込むことができる。 FIG. 2 is a sketch of the connector 2. FIG. 2A shows a connector 2a having a rectangular frame made of a material that does not deform, such as metal or plastic. The dimension of the inner length L1 in the long side direction is equal to the sum of the width d1 of the columnar part 111 of the left soundproofing partition 1a and the width d2 of the columnar part 111 of the right soundproofing partition 1b shown in FIG. The dimension of the inner length L2 in the direction is equal to the thickness of the soundproofing partition 1, and each is made to a dimension with a slight fitting dimension, and is fitted to the two columnar portions 111 arranged side by side as shown in FIG. Can be included.
図２（ｂ）は弾力性のあるゴムなどの材料で製作された別の連結具２ｂである。連結具２ｂは閉じた環状をなしており、周の長さは図３に示した左側の防音衝立１ａの柱状部１１１の幅ｄ１、右側の防音衝立１ｂの柱状部１１１の幅ｄ２と防音衝立１の厚みの２倍の和より十分に小さく、引き伸ばして上側から嵌め込めば、弾力性によって２つの柱状部を一体に連結することができる。十分な弾力性を持った材料で、幅Ｗ２を適当に選択すれば、２つの防音衝立１を強固に連結できる。 FIG. 2 (b) shows another connector 2b made of a material such as elastic rubber. The connector 2b has a closed ring shape, and the circumference is the width d1 of the columnar portion 111 of the left soundproofing screen 1a shown in FIG. 3, the width d2 of the columnar portion 111 of the right soundproofing screen 1b, and the soundproofing screen. If it is sufficiently smaller than the sum of twice the thickness of 1 and is stretched and fitted from above, the two columnar portions can be connected together by elasticity. If the width W2 is appropriately selected with a material having sufficient elasticity, the two soundproof partitions 1 can be firmly connected.
ここままでは、２つの防音衝立１を同じ高さで連結する場合について説明したが次に、防音衝立１を設置する地面または床が平らで無く段差がある場合について図３（ｂ）で説明する。左側の防音衝立１ａの位置が右側の防音衝立１ｂの位置より高い場合、図３（ｂ）に示すように防音衝立１ａの切り込み部１１の開口部１１２が上側にずれている。この場合も、２つの防音衝立１を並べて地面または床に置き、２つの切り込み部１１の開口部１１２の重なる範囲が連結具２の厚みより大きければ、同じ高さで連結する場合と同じに、隣り合わせた２つの柱状部１１１の上側から連結具２を嵌め込めばよい。 Here, the case where the two soundproof partitions 1 are connected at the same height has been described. Next, the case where the ground or floor on which the soundproof partitions 1 are installed is not flat and there is a step will be described with reference to FIG. . When the position of the left soundproof partition 1a is higher than the position of the right soundproof partition 1b, the opening 112 of the cut portion 11 of the soundproof partition 1a is shifted upward as shown in FIG. 3B. Also in this case, if two soundproof partitions 1 are placed side by side on the ground or floor and the overlapping range of the openings 112 of the two notches 11 is larger than the thickness of the connector 2, the same as when connecting at the same height, What is necessary is just to insert the connector 2 from the upper side of the two columnar parts 111 adjoined.
柱状部１１１の高さがｈであり、連結具２ａの高さ寸法がｗ１またはｗ２のとき、２つの柱状部１１１の高さ方向の位置の差、すなわち防音衝立１同士の高さの差がｈ−ｗ１またはｈ−ｗ２より小さい範囲の高さの違いであれば連結が可能である。したがって、土地や床の高さの差が、その範囲であれば防音衝立を設置することができる。 When the height of the columnar part 111 is h and the height dimension of the connector 2a is w1 or w2, the difference in the height direction positions of the two columnar parts 111, that is, the difference in height between the soundproofing partitions 1 is If the height difference is smaller than h-w1 or h-w2, the connection is possible. Therefore, if the difference in height between land and floor is within that range, a soundproofing screen can be installed.
２つの防音衝立１を並べて地面または床に置いたときに、２つの切り込み部１１の開口部の重なりが連結具２の厚みより小さい場合は、一時的に低い方の防音衝立１ｂを防音衝立１ａと略同じ高さに保持しておいて連結具２を嵌め込んでから、防音衝立１ｂを地面または床に据えればよい。 When the two soundproof screens 1 are placed side by side on the ground or floor, if the overlap of the openings of the two notches 11 is smaller than the thickness of the connector 2, the lower soundproof screen 1b is temporarily set to the soundproof screen 1a. The sound-proofing partition 1b may be placed on the ground or floor after the connector 2 is fitted and held at substantially the same height.
次に、図５によって、直角（Ｌ字形状）に２つの防音衝立１を連結する構造について説明する。図５においては、防音衝立１ａの右端の裏側に防音衝立１ｂの左端を突き当てて、２つの防音衝立１を直角（Ｌ字形状）に連結している。防音衝立１ａの柱状部の幅ｄ１と防音衝立１ｂの縁部の厚さＤは等しいので左側の防音衝立１ａの柱状部１１１と右側の防音衝立１ｂの柱状部１１１はぴったり接触して、図で上から見る時、一体となり一つの長方形をなしている。 Next, referring to FIG. 5, a structure for connecting two soundproof partitions 1 at right angles (L-shaped) will be described. In FIG. 5, the left end of the soundproofing partition 1b is abutted against the back side of the right end of the soundproofing partition 1a, and the two soundproofing partitions 1 are connected at right angles (L-shaped). Since the width d1 of the columnar portion of the soundproofing partition 1a and the thickness D of the edge of the soundproofing partition 1b are equal, the columnar portion 111 of the left soundproofing partition 1a and the columnar portion 111 of the right soundproofing partition 1b are in close contact with each other. When viewed from above, they form a single rectangle.
２つの防音衝立１を直線状に連結した場合と同じく、適切な内のり長さの長方形の連結具をまたは弾力性のある環状の連結具を柱状部１１１の上から嵌め込めば、２つの柱状部１１１は連結され、すなわち２つの防音衝立１ａ、防音衝立１ｂが連結できる。 When two soundproof partitions 1 are connected in a straight line, a rectangular connector having an appropriate inner length or a resilient annular connector is fitted from above the column part 111, so that two column parts 111 is connected, that is, two soundproof screens 1a and 1b can be connected.
防音衝立の縦方向の縁に逆Ｌ字形状の切り込み部を形成するとき、枠材を直線状の材料で製作しているのであれば枠材も切断しなくてはならない。枠材を切断すると防音衝立の平面を維持する強度が低下するので、切断された部分を相互に接続して強度を回復することが必要である。また、切り込み部においては防音パネルの断面が露出するという問題が有る。また、柱状部１１１は断面が小さく機械的に強度が弱いので何らかの方法で補強する必要がある。 When the inverted L-shaped cut portion is formed at the longitudinal edge of the soundproofing screen, if the frame material is made of a straight material, the frame material must also be cut. When the frame material is cut, the strength to maintain the flat surface of the soundproofing partition is lowered, so it is necessary to restore the strength by connecting the cut portions to each other. Moreover, there exists a problem that the cross section of a soundproof panel is exposed in a notch part. Moreover, since the columnar part 111 has a small cross section and mechanical strength is weak, it needs to be reinforced by some method.
図８ならびに図９は、切り込み形状を持った防音衝立の組み立ての手順を説明する図と、その際に使用する切り込み部を形成するブロックをネジで固定する方法を説明する図である。図８（ａ）に示すように、防音衝立１を組み立てるにあたって、ブロック１４、硬質フォーム材１２２、ハニカム１２１、アルミニウム板１２３ならびにアルミニウム繊維１２４を準備する。ブロック１４は、厚みがハニカム１２１と同等である木材、プラスチックまたは金属など強度のある材料を用いた直方体である。 FIG. 8 and FIG. 9 are diagrams for explaining the procedure for assembling the soundproofing partition having a cut shape, and for explaining a method for fixing the block forming the cut portion used at that time with a screw. As shown in FIG. 8A, in assembling the soundproofing partition 1, a block 14, a rigid foam material 122, a honeycomb 121, an aluminum plate 123, and aluminum fibers 124 are prepared. The block 14 is a rectangular parallelepiped using a strong material such as wood, plastic or metal having a thickness equivalent to that of the honeycomb 121.
所望の位置でハニカム１２１および硬質フォーム１２２にブロック１４がぴったり嵌るようにハニカム１２１および硬質フォーム１２２を切り取り加工しておく。ブロック１４及びハニカム１２１を加工後に、両者をアルミ繊維１２４上に隙間なく並べて接着する。接着の際は、ブロック１４とアルミ繊維１２４の間は全面を接着し、ハニカム１２１とアルミ繊維１２４はハニカム１２１の端部のみを接着する。接着後にハニカム１２１のセル空間に硬質フォーム１２２を充填する。 The honeycomb 121 and the rigid foam 122 are cut and processed so that the block 14 fits closely to the honeycomb 121 and the rigid foam 122 at a desired position. After the block 14 and the honeycomb 121 are processed, the both are arranged on the aluminum fiber 124 with no gap and bonded together. At the time of bonding, the entire surface is bonded between the block 14 and the aluminum fiber 124, and the honeycomb 121 and the aluminum fiber 124 are bonded only at the end of the honeycomb 121. After bonding, the rigid foam 122 is filled in the cell space of the honeycomb 121.
次に、アルミ繊維１２４を接着したのと反対の面に、ハニカム１２１にアルミニウム板１２３を接着剤によって貼り付ける。その結果図８（ｂ）に示すように、切り込み形状を加工する位置にハニカム１２１に代わってブロック１４を芯として埋め込んだ防音パネル１２が出来上がる。 Next, an aluminum plate 123 is attached to the honeycomb 121 with an adhesive on the surface opposite to the side where the aluminum fibers 124 are bonded. As a result, as shown in FIG. 8 (b), the soundproof panel 12 in which the block 14 is embedded in place of the honeycomb 121 at the position where the cut shape is processed is completed.
次に、どちらかの面からブロック１４を埋め込んだ位置に、面に垂直に鋸刃をあてて、逆Ｌ字形状になるように切り取る。その結果、図８（ｃ）に示すように、逆Ｌ字形状の切り込み形状を持った防音パネル１２が得られる。次に、切り込み部１１の開口部１１２だけを除いて、枠材１３を防音パネル１２の縁の全周に設置すれば、図８（ｄ）に示す防音衝立１が得られる。 Next, a saw blade is applied perpendicularly to the surface where the block 14 is embedded from either surface, and the surface is cut into an inverted L shape. As a result, as shown in FIG. 8C, a soundproof panel 12 having an inverted L-shaped cut shape is obtained. Next, if the frame member 13 is installed all around the edge of the soundproof panel 12 except for the opening 112 of the notch 11, the soundproofing partition 1 shown in FIG. 8 (d) is obtained.
さらに、ネジを用いて補強する方法を図９で説明する。図９（ａ）に示したのは、防音パネル１２にブロック１４を埋め込んだ状態を防音衝立１の平面側から見たときの状態である。ブロック１４の切り込み部とアルミニウム板１２３（またはアルミニウム繊維１２４）の切り込み部は見易さを考慮して、大きさを多少変えて描いてある。破線で示したのがアルミニウム板１２３（またはアルミニウム繊維１２４）の下側に隠れたブロック１４である。 Further, a method of reinforcing using screws will be described with reference to FIG. FIG. 9A shows a state in which the block 14 is embedded in the soundproof panel 12 as viewed from the plane side of the soundproofing partition 1. The cut portion of the block 14 and the cut portion of the aluminum plate 123 (or aluminum fiber 124) are drawn with slightly different sizes in consideration of ease of viewing. A broken line 14 shows the block 14 hidden under the aluminum plate 123 (or aluminum fiber 124).
図９（ｂ）に示すように、図で上側の枠材１３とブロック１４を、紙面に垂直方向のネジ１５１で固定する。図では片側しか示していないが裏面も同様にネジを使って固定する（見易さを考慮して全てのネジに符号をつけていない）。 As shown in FIG. 9B, the upper frame member 13 and the block 14 in the figure are fixed with screws 151 in the direction perpendicular to the paper surface. Although only one side is shown in the figure, the back side is similarly fixed by using screws (in order to make it easy to see, all screws are not labeled).
また、図に示すように、防音パネル１２の枠材１３の無い位置でもアルミニウム板１２３とブロック１４の間もネジ１５１で固定する。アルミニウム繊維１２４についても同じである。なお、ネジはいわゆる木ネジと同等あるいは類似の形状であって、その長さはブロック１４の厚み以下であり、アルミニウム板１２３（またはアルミニウム繊維１２４）を貫通してブロック内部で固定される。 Further, as shown in the figure, the aluminum plate 123 and the block 14 are also fixed with screws 151 even at a position where the frame member 13 of the soundproof panel 12 is not present. The same applies to the aluminum fiber 124. The screw has the same or similar shape as a so-called wood screw, and its length is equal to or less than the thickness of the block 14 and penetrates the aluminum plate 123 (or aluminum fiber 124) and is fixed inside the block.
ここで、ネジはアルミニウム板１２３側から、およびアルミニウム繊維１２４側からの双方から挿入、固定しても良いし、いずれか片側から挿入、固定しても良い。また、図９（ｂ）に示すように、十分な固定力を得るためには、枠材１３の無い位置および枠材１３のある位置の双方の位置でネジを挿入、固定しても良いし、必要最小限の固定力で構わない場合はいずれか一方の位置でネジを挿入、固定しても良い。 Here, the screw may be inserted and fixed from both the aluminum plate 123 side and the aluminum fiber 124 side, or may be inserted and fixed from either one side. Further, as shown in FIG. 9B, in order to obtain a sufficient fixing force, screws may be inserted and fixed at both the position without the frame member 13 and the position with the frame member 13. If the minimum necessary fixing force is acceptable, screws may be inserted and fixed at either position.
防音衝立１の側面に逆Ｌ字形状の切り込み部を設置する方法は本実施例で説明した方法に限らず、多種考えられるので適宜な方法を選択すれば良い。この結果、柱状部１１１の強度が確保されて、現場での手荒い取扱いがあっても、それに耐える防音衝立が実現できた。 The method of installing the inverted L-shaped cut portion on the side surface of the soundproofing partition 1 is not limited to the method described in this embodiment, and various methods may be selected. As a result, the strength of the columnar portion 111 was ensured, and a soundproofing partition that could withstand the rough handling at the site could be realized.
このような防音衝立の構造で、防音パネルとして出願人の株式会社静科が所有する特許３８０６７３３、および特許３８０６７４４により製造されたパネルを選択して防音性能を測定した。このパネルは、重量は８ｋｇ／ｍ２、厚さは３３ｍｍの軽量薄型材である。 With such a soundproof screen structure, a panel manufactured by Japanese Patent No. 3806733 and patent 3806744 owned by the applicant's Shizuka Corporation was selected as a soundproof panel, and the soundproof performance was measured. This panel is a lightweight thin material having a weight of 8 kg / m 2 and a thickness of 33 mm.
防音パネル１２の吸音率を残響室法で測定した結果のグラフを図１０に示す。軽量薄型の構造であっても「広域での吸音率が大きい」機能に着目し、衝立のベース材として選択したものである。
図１１は、図７構造から得られた音響透過損失のデーターである。
The graph of the result of having measured the sound absorption rate of the soundproof panel 12 by the reverberation room method is shown in FIG. Even if it is a lightweight and thin structure, it has been selected as a base material for the screen, paying attention to the function of “high sound absorption in a wide area”.
FIG. 11 shows sound transmission loss data obtained from the structure of FIG.
図１２は、防音衝立の寸法は幅１０００ｍｍ、高さ２０００ｍｍ、厚さ３３ｍｍ（枠材に厚さ３６ｍｍ）で、幅方向に１枚、長さ方向に３枚を用い、Ｌ字形状に連結させて、地面に設置して測定した結果を示す。測定は高さ１ｍ、防音衝立から２ｍ離れた位置で、騒音計ＮＡ―２７（リオン製）により測定した。音源にはコンクリート切断機を用いた。低周波域の６３Ｈｚから低減効果が確認され、１２５〜１００００Ｈｚの範囲において等価騒音レベル値（ＬＡｅｑ）で２０．７ｄＢの低減を確認した。 In FIG. 12, the dimensions of the soundproofing screen are 1000 mm in width, 2000 mm in height, 33 mm in thickness (36 mm in thickness for the frame material), one in the width direction and three in the length direction, and connected in an L shape The result of installation on the ground is shown. The measurement was performed with a sound level meter NA-27 (manufactured by Rion) at a height of 1 m and a position 2 m away from the soundproofing screen. A concrete cutting machine was used as the sound source. A reduction effect was confirmed from 63 Hz in the low frequency range, and a reduction of 20.7 dB was confirmed with an equivalent noise level value (LAeq) in the range of 125 to 10,000 Hz.
図１３は、防音衝立は、幅に２枚、長さ方向に各１枚を用い、コ字形状で騒音源を囲み、路面に設置して測定した結果を示す。測定器、測定位置と音源は同じである。結果は、前記の結果と同等の等価騒音レベル値（ＬＡｅｑ）で２０．８ｄＢの低減を確認した。 FIG. 13 shows the results of measurement using two soundproof screens, one in the width direction and one in the length direction, surrounded by a U-shaped noise source and installed on the road surface. The measuring instrument, measurement position and sound source are the same. As a result, a reduction of 20.8 dB was confirmed with an equivalent noise level value (LAeq) equivalent to the above result.
図１４は、図１２の条件で、防音衝立に取り外し可能なキャスターを付けて、路面から５０ｍｍ浮かせ、防音衝立及び音源のコンクリート切断機を移動しながら騒音の低減量を測定した結果である。測定結果によれば等価騒音レベル値（ＬＡｅｑ）で１５．９ｄＢの低減を確認した。 FIG. 14 shows the result of measuring the amount of noise reduction while moving the soundproofing partition and the sound source concrete cutting machine by attaching a removable caster to the soundproofing partition under the conditions of FIG. According to the measurement results, it was confirmed that the equivalent noise level (LAeq) was reduced by 15.9 dB.
工具を使用せず防音衝立が連結できるため、組立・解体が簡単であり、また、連結を解いて解体すれば平面上の防音衝立単体に戻して、重ねることができるのでかさばらず、低周波域から騒音の低減効果のある防音衝立が実現できた。
Since the soundproof screens can be connected without using tools, assembly and disassembly is easy, and if they are disassembled and disassembled, they can be returned to the soundproof screen on a flat surface and stacked, so it is not bulky and low frequency range Therefore, a soundproofing screen with a noise reduction effect was realized.
１ 防音衝立
１１ 切り込み部
１１１ 柱状部
１１２ 開口部
１２ 防音パネル
１２１ ハニカム
１２２ 硬質フォーム材
１２３ アルミニウム板
１２４ アルミニウム繊維
１２５ 接着剤
１３ 枠材
１４ ブロック
１５１ ネジ
２ 連結具
Ｄ 防音衝立の厚み
Ｔ 開口部の縦の長さ
ｗ１、ｗ２ 連結具の枠の厚さ
ｔ 連結具の枠の幅
Ｌ１ 連結具長辺の内のり寸法
Ｌ２ 連結具短辺の内のり寸法
ｄ１ 柱状部の幅寸法（防音衝立の枠材の厚さと同じ寸法）
ｄ２ 柱状部の他の寸法
ｈ 柱状部の高さ
DESCRIPTION OF SYMBOLS 1 Soundproofing partition 11 Notch part 111 Columnar part 112 Opening part 12 Soundproofing panel 121 Honeycomb 122 Hard foam material 123 Aluminum plate 124 Aluminum fiber 125 Adhesive 13 Frame material 14 Block 151 Screw 2 Connector D Soundproofing partition thickness T Vertical length of opening part Length w1, w2 thickness of connector frame t width of connector frame L1 inner dimension L2 of connector long side inner dimension d1 of connector short side Column width (same dimension as the thickness of the frame of the soundproofing screen)
d2 Other dimensions h of the columnar part Height of the columnar part
Claims (6)
該防音衝立の左右の側面の複数個所に逆Ｌ字形状の切り込部をおき、
複数の該防音衝立を連結するとき、隣り合う同じ形状の該防音衝立の、該逆Ｌ字状の切り込みによって形成される柱状部同士を連結具によって連結することで、該逆Ｌ字形状の切り込み長さの範囲で、地面または床の高さの差が有る場合も設置できる構造であることを特徴とする防音衝立。 A soundproofing screen that blocks noise,
Inverted L-shaped incisions are placed at several locations on the left and right sides of the soundproofing screen,
When connecting a plurality of the soundproof screens, the columnar portions formed by the reverse L-shaped cuts of the adjacent soundproof screens of the same shape are connected by a connecting tool, so that the reverse L-shaped cuts are made. A soundproofing screen characterized by having a structure that can be installed even when there is a difference in height of the ground or floor in the range of length.
該連結具は硬質材料からなり、長方形をなしていることを特徴とする防音衝立。 The soundproofing partition according to claim 1,
The coupling device is made of a hard material and has a rectangular shape.
該連結具は弾力性材料からなり環状をなしていることを特徴とする防音衝立。 The soundproofing partition according to claim 1,
A soundproofing partition characterized in that the connecting member is made of an elastic material and has an annular shape.
左右の側面の少なくとも一方に形成された該逆Ｌ字形状の切り込みによって形成される柱状部の幅が該防音衝立の縁部の厚さに略等しいことを特徴とする防音衝立。 The soundproofing partition according to claim 1,
A soundproofing partition characterized in that the width of the columnar part formed by the inverted L-shaped cut formed on at least one of the left and right side surfaces is substantially equal to the thickness of the edge of the soundproofing partition.
該防音衝立は、多孔材からなる吸音層、ハニカムに連通発泡構造の樹脂を充填した吸音層、音響の反射板を記載の順に積層した構造であることを特徴とする防音衝立。 The soundproofing partition according to claim 1,
The soundproofing screen has a structure in which a sound absorbing layer made of a porous material, a sound absorbing layer filled with a resin having a continuous foam structure in a honeycomb, and an acoustic reflector are laminated in the order described.
該切り込み部は、ハニカムを切り抜いた位置に代わりに埋め込んだ、逆Ｌ字形状に切り込み加工をした直方体のブロックで構成し、
該ブロックと該枠材、および／または音響の反射材であるアルミニウム板および／または多孔材からなる吸音層であるアルミニウム繊維とをネジでつないだ構造であることを特徴とする防音衝立。 The soundproofing partition according to claim 5,
The cut portion is composed of a rectangular parallelepiped block which is embedded in the cut-out position of the honeycomb and cut into an inverted L shape,
A soundproofing partition having a structure in which the block and the frame member and / or an aluminum plate as a sound reflecting material and / or an aluminum fiber as a sound absorbing layer made of a porous material are connected by screws.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2020020178A (en) * | 2018-08-01 | 2020-02-06 | 健也 惠美須 | Box type structure unit and structure |
| CN112863469A (en) * | 2020-12-19 | 2021-05-28 | 重庆大学 | Low-frequency super-open ventilation self-adaptive high-efficiency sound absorber |
| CN114081314A (en) * | 2021-10-19 | 2022-02-25 | 杭州群核信息技术有限公司 | Combined screen assembling method, device, equipment and medium |
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| CN114081314B (en) * | 2021-10-19 | 2023-08-25 | 杭州群核信息技术有限公司 | Combined screen assembling method, device, equipment and medium |
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