JP5358037B2 - Sound absorbing plate and its construction method - Google Patents

Sound absorbing plate and its construction method Download PDF

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JP5358037B2
JP5358037B2 JP2013151567A JP2013151567A JP5358037B2 JP 5358037 B2 JP5358037 B2 JP 5358037B2 JP 2013151567 A JP2013151567 A JP 2013151567A JP 2013151567 A JP2013151567 A JP 2013151567A JP 5358037 B2 JP5358037 B2 JP 5358037B2
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sound absorbing
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groove
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JP2013234568A (en
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徹 萩原
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Sekisui Jushi Corp
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本発明は、道路や線路に沿って設置される吸音板とその施工方法に関するものである。   The present invention relates to a sound absorbing plate installed along a road or a track and a construction method thereof.

道路や線路に沿って設置され、走行する車両や電車の騒音を吸収する吸音板については、その施工を容易にする構造や方法について、種々の発明が開示されている。   Various inventions have been disclosed regarding structures and methods for facilitating the construction of sound-absorbing plates that are installed along roads and tracks and absorb the noise of traveling vehicles and trains.

例えば、特許文献１には、防音板本体の端部に形成された取付枠の奥側の壁面にはボルト径より僅かに大きい孔が穿設され、取付枠の手前側の壁面にはボルト頭またはナットを締め付ける工具が挿通可能な大きさの工具用孔が穿設され、該工具用孔には該工具用孔を覆うに足る大きさの蓋板が設けられてなる防音板の構造、が本件出願人によって開示されている。   For example, in Patent Document 1, a hole slightly larger than the bolt diameter is formed in the wall surface on the back side of the mounting frame formed at the end of the soundproof board body, and the bolt head is formed on the wall surface on the near side of the mounting frame. Alternatively, a structure of a soundproof plate, in which a tool hole having a size capable of inserting a tool for tightening a nut is provided, and the tool hole is provided with a cover plate large enough to cover the tool hole, Disclosed by the applicant.

特開平１１−２６４１１８号公報JP-A-11-264118

しかしながら、特許文献１に示す防音板の構造は、施工場所における、防音板にボルトを挿通させるために穿設させた孔に対応する位置に、ボルトを固定させるための雌ねじ部材を配置しておく必要があり、この位置に障害物があった場合にはこれに対応させた形状の防音板を別に用意する必要があった。   However, in the structure of the soundproof plate shown in Patent Document 1, a female screw member for fixing the bolt is disposed at a position corresponding to a hole drilled in order to insert the bolt into the soundproof plate at the construction site. When there is an obstacle at this position, it is necessary to prepare a separate soundproof plate having a shape corresponding to the obstacle.

そこで本発明は、施工場所の様々な状況に対応して設置固定できる吸音板と、その施工方法を提供するものである。   Therefore, the present invention provides a sound-absorbing plate that can be installed and fixed in accordance with various situations at a construction site, and a construction method therefor.

上記目的を達成するため、本発明は以下のような構成としている。
すなわち本発明に係る吸音板は、上枠と、下枠とを備えて構成された枠体の前方側に、多数の開口部を有する前面板が設けられ、
該前面板の後方には吸音材が前記枠体の内側に収納されて取り付けられた吸音板であって、
前記上枠及び下枠に外方に開口する溝部が長手方向に沿って全長に亘り形成され、
前記溝部は開口縁が内側へ突出して形成されており、
前記溝部は内側に締結部材が摺動自在に収納可能となされていると共に、前記締結部材に被締結部材が外方から締結可能となされている吸音板であって、
上枠に形成された前記溝部は上方に開口して形成されると共に、下枠に形成された前記溝部は下方に開口して形成され、かつ前記締結部材は固定ボルトから形成され、
前記溝部の内側に前記固定ボルトのボルト頭部が収納されて、該固定ボルトの雄ねじ部が外方に向けて取り付けられ、
前記固定ボルトを介して前記上枠及び下枠に取付金具がそれぞれ取り付けられ、
前記各取付金具は、枠当接板部と、該枠当接板部に対して垂直に延設される施工面当接板部とを有して形成され、
前記各取付金具は前記施工面当接板部をそれぞれ後方に向けられ、前記枠当接板部を前記上枠の上面及び下枠の下面にそれぞれ当接されて取り付けられており、
前記各取付金具の施工面当接板部を施工面に当接させて施工ボルトで固定可能になされていることを特徴としている。 In order to achieve the above object, the present invention is configured as follows.
That is, the sound absorbing plate according to the present invention is provided with a front plate having a large number of openings on the front side of a frame body including an upper frame and a lower frame,
A sound absorbing plate is mounted on the rear side of the front plate with a sound absorbing material housed inside the frame,
Grooves that open outwardly in the upper and lower frames are formed over the entire length along the longitudinal direction,
The groove is formed with an opening edge protruding inward,
The groove portion is a sound absorbing plate in which a fastening member can be slidably housed inside, and a fastening member can be fastened to the fastening member from the outside,
The groove formed in the upper frame is formed to open upward, the groove formed in the lower frame is formed to open downward, and the fastening member is formed from a fixing bolt,
The bolt head portion of the fixing bolt is housed inside the groove portion, and the male screw portion of the fixing bolt is attached facing outward,
Mounting brackets are respectively attached to the upper frame and the lower frame via the fixing bolts,
Each of the mounting brackets is formed having a frame contact plate portion and a construction surface contact plate portion extending perpendicularly to the frame contact plate portion,
Each of the mounting brackets is directed so that the construction surface contact plate portion is directed rearward, and the frame contact plate portion is attached in contact with the upper surface of the upper frame and the lower surface of the lower frame,
The construction surface abutment plate portion of each mounting bracket is brought into contact with the construction surface and can be fixed with a construction bolt.

本発明に係る吸音板及びその施工方法によれば、上枠及び下枠に外方に開口する溝部を長手方向に沿って全長に亘り形成させ、この溝部は内側に締結部材が摺動自在に収納可能となされているので、この締結部材を溝部に沿って摺動させて、前記溝部を形成させた枠の長手方向の希望の位置に前記締結部材を配置させることが容易にでき、また、前記締結部材を複数取り付けて希望の位置に各々配置させることができる。
また、前記溝部の開口縁を内側へ突出させて形成させるので、前記締結部材が前記開口縁の内側に当接し、前記締結部材を前記溝部から抜けることなく取り付けることができる。
また、前記溝部の内側に収納された前記締結部材に、被締結部材が外方から締結可能となされているので、吸音板を施工場所へ固定するための取付金具を、前記締結部材と被締結部材との締結によって前記吸音板に容易に取り付けることができ、前記取付金具の固定の障害となる障害物が施工場所に存在する場合には、前記締結部材を好適な位置に配置させて前記取付金具を固定させて、施工することができる。 According to the sound absorbing plate and the construction method thereof according to the present invention, the groove portion that opens outward is formed over the entire length along the longitudinal direction in the upper frame and the lower frame, and the fastening member is slidable inside the groove portion. Since it can be stored, it is possible to easily place the fastening member at a desired position in the longitudinal direction of the frame on which the groove is formed by sliding the fastening member along the groove. A plurality of the fastening members can be attached and arranged at desired positions.
In addition, since the opening edge of the groove portion is formed to protrude inward, the fastening member abuts on the inner side of the opening edge, and the fastening member can be attached without coming out of the groove portion.
In addition, since the fastened member can be fastened from the outside to the fastening member housed inside the groove, a mounting bracket for fixing the sound absorbing plate to the construction site is fastened with the fastened member. It can be easily attached to the sound absorbing plate by fastening with a member, and when there is an obstacle at the construction site that becomes an obstacle to fixing the mounting bracket, the fastening member is arranged at a suitable position and the attachment is performed. It can be constructed with the brackets fixed.

また、上枠に形成させた前記溝部を上方に開口して形成させると共に、下枠に形成させた前記溝部を下方に開口して形成させ、前記溝部の内側に固定ボルトのボルト頭部を収納させて、該固定ボルトの雄ねじ部を外方に向けて取り付け、前記固定ボルトを介して前記上枠及び下枠に前記取付金具をそれぞれ取り付けるので、前記各取付金具を介して前記吸音板を施工面に取り付けることで、吸音板が上枠と下枠とをそれぞれ支持されて固定されるので、各々の取付金具にかかる吸音板の荷重が分散され、各取付金具やこれを固定するボルトにかかる負荷が軽減される。
また、前記各取付金具を、枠当接板部と、該枠当接板部に対して垂直に延設される施工面当接板部とを有して形成させ、
前記枠当接板部を前記上枠の上面及び下枠の下面にそれぞれ当接させて取り付けるので、前記吸音板の上枠を上方に向けて取り付ける場合等に、その荷重を下枠に取り付けた取付金具の枠当接板部で受けるように固定されるので、下枠の溝部に取り付けた固定ボルトには吸音板の荷重がかからず、その締結が緩みにくいものとなされる。またこの場合には、上枠の溝部に取り付けた固定ボルトには吸音板の荷重がかかるが、その荷重は下枠の取り付けた取付金具に分散され、その締結が緩みにくいものとなされる。
また、前記各取付金具の前記施工面当接板部をそれぞれ後方に向け、前記各取付金具の施工面当接板部を施工面に当接させてボルトで固定可能に形成するので、立設する壁体や支柱などに前記前記各取付金具の施工面当接板部を当接させてボルトで固定する場合に、前記ボルトへの荷重がその雄ねじの長手方向と垂直にかかるので、雄ねじ部分の伸びが抑制され、その締結が緩みにくいものとなされる。 Further, the groove portion formed in the upper frame is formed by opening upward, and the groove portion formed in the lower frame is formed by opening downward, and the bolt head portion of the fixing bolt is stored inside the groove portion. The mounting screw is attached to the upper frame and the lower frame via the fixing bolt, and the sound absorbing plate is installed via the mounting bracket. By attaching to the surface, the sound absorbing plate is supported and fixed to the upper frame and the lower frame respectively, so the load of the sound absorbing plate on each mounting bracket is dispersed and applied to each mounting bracket and the bolt that fixes it The load is reduced.
Further, each mounting bracket is formed having a frame contact plate portion and a construction surface contact plate portion extending perpendicularly to the frame contact plate portion,
Since the frame abutting plate part is attached by being brought into contact with the upper surface of the upper frame and the lower surface of the lower frame, the load is attached to the lower frame when the upper frame of the sound absorbing plate is mounted upward. Since it is fixed so as to be received by the frame contact plate portion of the mounting bracket, the load of the sound absorbing plate is not applied to the fixing bolt attached to the groove portion of the lower frame, and the fastening is difficult to loosen. Further, in this case, although the load of the sound absorbing plate is applied to the fixing bolt attached to the groove portion of the upper frame, the load is distributed to the attachment fitting to which the lower frame is attached, and the fastening is difficult to loosen.
In addition, the construction surface abutment plate portion of each mounting bracket is directed rearward, and the construction surface abutment plate portion of each mounting bracket is abutted against the construction surface so that it can be fixed with bolts. When the construction surface abutting plate portion of each of the mounting brackets is brought into contact with a wall body or a column to be fixed and fixed with a bolt, the load on the bolt is applied perpendicularly to the longitudinal direction of the male screw. Is suppressed, and the fastening is difficult to loosen.

本発明の吸音板及びその施工方法によれば、施工場所の様々な状況に対応して吸音板を設置固定できる。   According to the sound absorbing plate and its construction method of the present invention, it is possible to install and fix the sound absorbing plate corresponding to various situations in the construction place.

本発明に係る吸音板の実施の一形態を示す（イ）は平面図であり、（ロ）は正面図であり、（ハ）は側面図であり、（ニ）は背面図である。(A) which shows one Embodiment of the sound-absorbing board which concerns on this invention is a top view, (b) is a front view, (c) is a side view, (d) is a rear view. 図１のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 図１のＢ−Ｂ断面図であるIt is BB sectional drawing of FIG. 本発明に係る取付金具の実施の一形態を示す（イ）は平面図であり、（ロ）は正面図であり、（ハ）は側面図である。(A) which shows one Embodiment of the attachment metal fitting which concerns on this invention is a top view, (b) is a front view, (c) is a side view. 図１の吸音板の下枠に図４の取付金具を取り付ける状況を示す要部の断面図であり、（イ）は溝部に固定ボルトを取り付けた状態を示し、（ロ）は固定ボルトに取付金具を取り付けた状態を示す。It is sectional drawing of the principal part which shows the condition which attaches the attachment metal fitting of FIG. 4 to the lower frame of the sound-absorbing board of FIG. 1, (A) shows the state which attached the fixing bolt to the groove part, (B) attached to a fixing bolt The state where the bracket is attached is shown. 取付金具を取り付けた吸音板の実施の一形態を示す（イ）は平面図であり、（ロ）は正面図であり、（ハ）は側面図である。(A) which shows one Embodiment of the sound-absorbing board which attached the attachment metal fitting is a top view, (b) is a front view, (c) is a side view.

本発明の実施の形態を図に基づき具体的に説明する。
最初に図１〜３に基づき、本発明に係る吸音板の実施の一形態について説明する。
図面において、１は吸音板である。
吸音板１は、長尺枠材に形成された左右の縦枠３、上枠２ａ、下枠２ｂとが組み付けられて横長の四角形状に枠組みされた枠体Ｆが形成され、この枠体Ｆの前方側に前面板５が取り付けられ、前記枠体Ｆに囲われてその内側に収納されるように板状の吸音材６が前面板５の後方に取り付けられて、形成されている。
枠体Ｆの後方には、補強材７及び押え板８が、上枠２ａと下枠２ｂとに架け渡されて設けられており、前記吸音材６がこれに当接して枠体Ｆの後方から脱落しないように構成されている。 Embodiments of the present invention will be specifically described with reference to the drawings.
First, an embodiment of a sound absorbing plate according to the present invention will be described with reference to FIGS.
In the drawings, reference numeral 1 denotes a sound absorbing plate.
The sound absorbing plate 1 includes a frame F that is framed in a horizontally long rectangular shape by assembling left and right vertical frames 3, an upper frame 2 a, and a lower frame 2 b formed on a long frame material. A front plate 5 is attached to the front side of the plate, and a plate-like sound absorbing material 6 is attached to the rear of the front plate 5 so as to be surrounded by the frame body F and housed therein.
Behind the frame body F, a reinforcing member 7 and a presser plate 8 are provided so as to be bridged between the upper frame 2a and the lower frame 2b. It is configured not to fall off.

前記上枠２ａ及び下枠２ｂはそれぞれ同一断面形状のアルミニウム押出形材から形成されている。
上枠２ａ及び下枠２ｂには、枠体Ｆの前方内側に該当する縁から内側方向へ延設されて突出する前延設片２５がそれぞれ設けられている。また上枠２ａ及び下枠２ｂには、枠体Ｆの後方内側に該当する縁から内側方向へ延設されて突出する後延設片２６がそれぞれ設けられている。
本実施形態の前記前面板５は、上枠２ａ及び下枠２ｂの各前延設片２５の内側面に当接されて固定され、また、前記吸音材６は、その上下の縁を、上枠２ａ及び下枠２ｂの各後延設片２６の内側面に当接させて、枠体Ｆに収納されている。 The upper frame 2a and the lower frame 2b are each formed from an extruded aluminum material having the same cross-sectional shape.
Each of the upper frame 2a and the lower frame 2b is provided with a front extending piece 25 that extends inward from the edge corresponding to the front inner side of the frame body F and protrudes. The upper frame 2a and the lower frame 2b are respectively provided with rearward extending pieces 26 that extend inward from the edge corresponding to the rear inner side of the frame body F and project.
The front plate 5 of the present embodiment is fixed in contact with the inner side surfaces of the front extending pieces 25 of the upper frame 2a and the lower frame 2b, and the sound absorbing material 6 has upper and lower edges on the upper side. The frame 2a and the lower frame 2b are accommodated in the frame body F so as to be in contact with the inner side surfaces of the rear extending pieces 26.

本実施形態の左右の縦枠３はそれぞれ同一断面形状のアルミニウム押出形材を用いている。
各縦枠３には、枠体Ｆの前方内側に該当する縁から内側方向へ延設された前延設片３５がそれぞれ設けられている。また、各縦枠３には、枠体Ｆの後方内側に該当する縁から内側方向へ延設された後延設片３６がそれぞれ設けられている。
本実施形態の前記前面板５は、各縦枠３の各前延設片３５の内側面に当接されて固定され、また、前記吸音材６は、その左右の縁を、各縦枠３の各後延設片３６の内側面に当接させて、枠体Ｆに収納されている。 The left and right vertical frames 3 of the present embodiment use aluminum extruded sections having the same cross-sectional shape.
Each vertical frame 3 is provided with a front extending piece 35 that extends inward from an edge corresponding to the front inner side of the frame F. Each vertical frame 3 is provided with a rear extending piece 36 extending inward from an edge corresponding to the rear inner side of the frame F.
The front plate 5 of the present embodiment is fixed in contact with the inner side surface of each front extending piece 35 of each vertical frame 3, and the sound absorbing material 6 has its left and right edges at each vertical frame 3. It is made to contact | abut to the inner surface of each rear extension piece 36, and is accommodated in the frame F.

本実施形態の吸音材６は、ポリエステル繊維体の表面に不織布を貼着させて形成されており、枠体Ｆの内側の空間部分より若干小さな板形状に形成されている。
吸音材６の材質は、これに限るものではなく、ガラス繊維のものを用いても良く、その他の材質のものを用いても良い。 The sound absorbing material 6 of this embodiment is formed by sticking a nonwoven fabric to the surface of a polyester fiber body, and is formed in a plate shape slightly smaller than the space portion inside the frame F.
The material of the sound absorbing material 6 is not limited to this, and a glass fiber may be used, or other materials may be used.

本実施形態の前面板５は亜鉛めっき鋼板を用いて形成され、丸穴形状の貫通穴に形成された開口部５１がパンチング加工によって前面板５の周縁以外の全面に亘るように多数設けられている。前記前面板５を枠体Ｆの前方側に備えることで、吸音板１の前方からの騒音が、開口部５１を通じて枠体Ｆの内側に入射され、収納させた吸音材６に吸収されるようになされている。
本実施形態の前面板５は亜鉛めっき鋼板を用いて形成しているが、これに限るものではなく、アルミニウムやステンレスなどの各種金属や、合成樹脂、ＦＲＰなどの複合材料等、各種材料を選択して用いることができる。
尚、図１（ロ）においては、図面の簡略化のために前面板５における開口部５１の図示を一部省略している。 The front plate 5 of the present embodiment is formed using a galvanized steel plate, and a large number of openings 51 formed in a round hole-shaped through hole are provided so as to cover the entire surface other than the peripheral edge of the front plate 5 by punching. Yes. By providing the front plate 5 on the front side of the frame F, noise from the front of the sound absorbing plate 1 enters the inside of the frame F through the opening 51 and is absorbed by the housed sound absorbing material 6. Has been made.
The front plate 5 of the present embodiment is formed using a galvanized steel plate, but is not limited to this, and various materials such as various metals such as aluminum and stainless steel, composite materials such as synthetic resin and FRP are selected. Can be used.
In FIG. 1B, the opening 51 in the front plate 5 is partially omitted for simplification of the drawing.

補強材７は長尺形状に形成され、Ｕの字の断面形状の両側の縁からそれぞれ反対方向へ取付片７１が延設された形状に形成されている。本実施形態の補強材７は、枠体Ｆの上枠２ａと下枠２ｂとに架け渡されて、その長手方向中央の位置に１本固定されている。具体的には、前記各取付片７１を上枠２ａ及び下枠２ｂの後延設片２６の外側面に当接させて固定されている。
補強材７が設けられることで、枠体Ｆの内側に収納させた前記吸音材６の後方からの脱落が防止されるとともに、横長の四角形状に形成された枠体Ｆから形成される吸音板１の強度が向上する。
本実施形態の補強材７は亜鉛めっき鋼板を曲げ加工して形成させているが、これに限るものではなく、各種金属、合成樹脂などの材料を選択して用いることができる。 The reinforcing material 7 is formed in a long shape, and is formed in a shape in which attachment pieces 71 are extended in opposite directions from both edges of the U-shaped cross-sectional shape. The reinforcing material 7 of this embodiment is spanned between the upper frame 2a and the lower frame 2b of the frame F, and one reinforcing material 7 is fixed at the center in the longitudinal direction. Specifically, each of the mounting pieces 71 is fixed in contact with the outer surface of the rearwardly extending piece 26 of the upper frame 2a and the lower frame 2b.
Since the reinforcing material 7 is provided, the sound absorbing material 6 accommodated inside the frame F is prevented from falling off from the rear, and the sound absorbing plate formed from the frame F formed in a horizontally long rectangular shape. The strength of 1 is improved.
Although the reinforcing material 7 of this embodiment is formed by bending a galvanized steel sheet, the present invention is not limited to this, and materials such as various metals and synthetic resins can be selected and used.

押え板８は、帯状の長尺形状に形成されており、上枠２ａと下枠２ｂとに架け渡されて、前記補強材７と、上枠２ａ及び下枠２ｂの長手方向両端との間にそれぞれ１本づつ、合計２本固定されている。押え板８は、補強材７と同様に、上枠２ａ及び下枠２ｂの後延設片２６の外側面に当接されて固定されている。
押え板８が設けられることで、枠体Ｆの内側に収納させた前記吸音材６の後方からの脱落が防止される。
本実施形態の押え板８は亜鉛めっき鋼板で形成させているが、これに限るものではなく、各種金属、合成樹脂などの材料を選択して用いることができる。 The presser plate 8 is formed in a belt-like long shape, and is spanned between the upper frame 2a and the lower frame 2b, and between the reinforcing member 7 and both longitudinal ends of the upper frame 2a and the lower frame 2b. A total of two are fixed one by one. The presser plate 8 is fixed in contact with the outer surface of the rear extending piece 26 of the upper frame 2a and the lower frame 2b in the same manner as the reinforcing member 7.
By providing the pressing plate 8, the sound absorbing material 6 housed inside the frame F is prevented from falling off from behind.
The presser plate 8 of the present embodiment is formed of a galvanized steel plate, but is not limited to this, and materials such as various metals and synthetic resins can be selected and used.

枠体Ｆを構成する、上枠２ａの上面と、下枠２ｂの下面にあたる面には、それぞれ上方と下方に開口する溝部２１が形成されている。
前記溝部２１は、長尺枠材に形成された上枠２ａ及び下枠２ｂの長手方向に沿って全長に亘って形成されており、形成された面の幅方向中央の位置に形成されている。
また、前記溝部２１の縁において、形成された上枠２ａの上面及び下枠２ｂの下面が溝部２１の内側方向へ延設されるように、溝部２１の内側方向に突出する開口縁２２が形成されている。 Grooves 21 that open upward and downward are respectively formed on the upper surface of the upper frame 2a and the lower surface of the lower frame 2b that constitute the frame F.
The groove portion 21 is formed over the entire length along the longitudinal direction of the upper frame 2a and the lower frame 2b formed in the long frame material, and is formed at the center in the width direction of the formed surface. .
Further, at the edge of the groove portion 21, an opening edge 22 that protrudes in the inner direction of the groove portion 21 is formed so that the upper surface of the formed upper frame 2 a and the lower surface of the lower frame 2 b extend inwardly of the groove portion 21. Has been.

図４は本発明に係る取付金具の実施の一形態を示す（イ）は平面図であり、（ロ）は正面図であり、（ハ）は側面図である。
本実施形態の取付金具４は、長方形の板材を折り曲げ、曲部４５において９０°の角度で折れ曲がるＬの字形状に形成されており、板面が水平方向に向けられた枠当接板部４１と、この縁の一つを構成する曲部４５と、この曲部４５から垂直に延設されて板面が垂直方向に向けられた施工面当接板部４２とが形成されている。 4A and 4B are plan views, FIG. 4B is a front view, and FIG. 4C is a side view showing an embodiment of a mounting bracket according to the present invention.
The mounting bracket 4 of the present embodiment is formed in an L-shape that bends a rectangular plate material and bends at an angle of 90 ° at the bent portion 45, and the frame contact plate portion 41 whose plate surface is oriented in the horizontal direction. And a curved portion 45 constituting one of the edges, and a construction surface abutting plate portion 42 extending vertically from the curved portion 45 and having a plate surface oriented in the vertical direction.

枠当接板部４１には、これを貫通する固定ボルト挿通穴４３が形成されている。この固定ボルト挿通穴４３は、丸形状で、前記曲部４５とは反対側の縁に沿うように２個並設されて形成されている。
また、施工面当接板部４２には、これを貫通する施工ボルト挿通穴４４が形成されている。この施工ボルト挿通穴４４は、前記曲部４５の形成された縁に沿って長い長穴形状に形成されており、施工面当接板部４２の中央付近の位置に１個形成されている。 The frame contact plate portion 41 is formed with a fixing bolt insertion hole 43 penetrating therethrough. The fixing bolt insertion holes 43 have a round shape and are formed in parallel so as to be along the edge on the side opposite to the curved portion 45.
Further, the construction surface abutting plate portion 42 is formed with a construction bolt insertion hole 44 penetrating therethrough. The construction bolt insertion hole 44 is formed in a long slot shape along the edge where the curved portion 45 is formed, and one construction bolt insertion hole 44 is formed at a position near the center of the construction surface contact plate portion 42.

図５は図１の吸音板１の下枠２ｂに図４の取付金具４を取り付ける状況を示す要部の断面図であり、（イ）は溝部に固定ボルト9を取り付けた状態を示し、（ロ）は固定ボルト９に取付金具を取り付けた状態を示す。
上枠２ａと下枠２ｂとにそれぞれ設けられた各溝部２１は、その内部に固定ボルト９のボルト頭部９１を収納可能な大きさに形成されており、その両縁に形成された各開口縁２２はその隙間の幅の大きさが固定ボルト９の雄ねじ部９２の径より若干大きく形成されている。
固定ボルト９は、図５（イ）に示されるように、そのボルト頭部９１を溝部２１の内側に摺動可能に収納させ、雄ねじ部９２を各開口縁２２の間の隙間から下方に突出させて、下枠２ｂに取り付けられている。各開口縁２２の間の隙間の幅の大きさが固定ボルト９の雄ねじ部９２の径より若干大きく形成されているので、ボルト頭部９１が各開口縁２２の内側面に当接されて、固定ボルト９を溝部２１に沿って摺動させても、ボルト頭部９２は溝部２１内から抜けることがない。
固定ボルト９は、後述する取付金具４の固定に用いられ、本実施形態では１個の取付金具４あたり、２本の固定ボルト９を用いるため、必要な数の固定ボルト９を取付金具４の取り付け前に、溝部２１に取り付ける。 FIG. 5 is a cross-sectional view of the main part showing a state in which the mounting bracket 4 of FIG. 4 is attached to the lower frame 2b of the sound absorbing plate 1 of FIG. 1, (a) shows a state in which the fixing bolt 9 is attached to the groove, (B) shows a state where the mounting bracket is attached to the fixing bolt 9.
Each groove portion 21 provided in each of the upper frame 2a and the lower frame 2b is formed to have a size capable of accommodating the bolt head 91 of the fixing bolt 9 therein, and each opening formed on both edges thereof. The edge 22 is formed such that the width of the gap is slightly larger than the diameter of the male thread portion 92 of the fixing bolt 9.
As shown in FIG. 5 (a), the fixing bolt 9 has its bolt head portion 91 slidably housed inside the groove portion 21, and the male screw portion 92 projects downward from the gap between the respective opening edges 22. And attached to the lower frame 2b. Since the width of the gap between each opening edge 22 is formed slightly larger than the diameter of the male screw portion 92 of the fixing bolt 9, the bolt head 91 is brought into contact with the inner surface of each opening edge 22, Even if the fixing bolt 9 is slid along the groove 21, the bolt head 92 does not come out of the groove 21.
The fixing bolts 9 are used for fixing the mounting bracket 4 to be described later. In the present embodiment, two fixing bolts 9 are used for each mounting bracket 4, so that a necessary number of fixing bolts 9 are attached to the mounting bracket 4. It attaches to the groove part 21 before attachment.

次に、枠当接板部４１が水平方向に向けられ、その後方から下方に延設されるように施工面当接板部４２が向けられた、取付金具４の固定ボルト挿通穴４３に、下枠２ｂに取り付けられた固定ボルト９の雄ねじ部９２を挿通させ、枠当接板部４１を下枠２ｂの下面に当接させ、下方からナットＮをこの雄ねじ部９２に螺結させて、下枠２ｂに取付金具４を固定させる。
また上枠２ａにおいては、固定ボルト９と取付金具４の上下方向の向きのみを上記の方法とは逆にして、上記の方法に基づき、枠当接板部４１を上枠２ａの上面に当接させて取付金具４を上枠２ａに固定させる。
図６は取付金具４を取り付けた吸音板１の実施の一形態を示す（イ）は平面図であり、（ロ）は正面図であり、（ハ）は側面図であり、図４の取付金具４を図１の吸音板１の上枠２ａと下枠２ｂとにそれぞれ３個づつ、合計６個取り付けた状態を示している。 Next, in the fixing bolt insertion hole 43 of the mounting bracket 4 in which the construction surface contact plate portion 42 is directed so that the frame contact plate portion 41 is oriented in the horizontal direction and extends downward from the rear thereof. The male threaded portion 92 of the fixing bolt 9 attached to the lower frame 2b is inserted, the frame abutting plate 41 is brought into contact with the lower surface of the lower frame 2b, and the nut N is screwed to the male threaded portion 92 from below, The mounting bracket 4 is fixed to the lower frame 2b.
In the upper frame 2a, only the vertical direction of the fixing bolt 9 and the mounting bracket 4 is reversed from the above method, and the frame abutting plate portion 41 is applied to the upper surface of the upper frame 2a based on the above method. The mounting bracket 4 is fixed to the upper frame 2a by contact.
6A and 6B show an embodiment of the sound absorbing plate 1 to which the mounting bracket 4 is attached. FIG. 6A is a plan view, FIG. 6B is a front view, and FIG. 6C is a side view. 6 shows a state in which three metal fittings 4 are attached to the upper frame 2a and the lower frame 2b of the sound absorbing plate 1 of FIG.

本実施形態において、各取付金具４の施工面当接板部４２は、その面の方向を吸音板１の前面板５の面と同じ方向に向けて取り付けられている。このため、立設する既存の壁面やトンネルの天井などに沿って吸音板１を設置させたい場合には、これらの壁面や天井面に取付金具４の施工面当接板部４２を当接させ、これに形成させた施工ボルト挿通穴４４に施工用のボルトを挿通させて、あらかじめ施工面に埋設させたアンカーナットなどに螺結させて吸音板１を施工面に設置固定させることができる。   In the present embodiment, the construction surface abutment plate portion 42 of each mounting bracket 4 is attached with the surface direction oriented in the same direction as the surface of the front plate 5 of the sound absorbing plate 1. For this reason, when it is desired to install the sound absorbing plate 1 along existing wall surfaces or tunnel ceilings to be erected, the construction surface contact plate portion 42 of the mounting bracket 4 is brought into contact with these wall surfaces or ceiling surfaces. Then, a construction bolt can be inserted into the construction bolt insertion hole 44 formed in this, and screwed to an anchor nut or the like embedded in the construction surface in advance, so that the sound absorbing plate 1 can be installed and fixed on the construction surface.

固定する固定ボルト９は、溝部２１に沿って摺動可能に取り付けられるので、この雄ねじ部９２を介して取り付けられる取付金具４を、上枠２ａ、下枠２ｂの長手方向の任意の位置に固定させることができる。このため、吸音板１を固定させる施工場所に電気配線や、鉄筋コンクリートの鉄筋などの補強部材、コンクリートの接合部分など、取付金具４の当接や施工ボルトの固定などの障害となるものが存在している場合でも、固定ボルト９を摺動させて取付金具４の位置を変更し、容易に障害物を避けて施工することができる。
また、本実施形態では、溝部２１に締結部材としての固定ボルト９のボルト頭部９１を収納させ被締結部材としてのナットＮが締結されているが、これに限るものではなく、溝部２１に締結部材としてのナットＮを摺動自在に収納させて、溝部２１の外側からこの雌ねじ部分に被締結部材としての固定ボルト９を螺結させてもよい。溝部２１を、その内側に固定ボルト９のボルト頭部９１を摺動可能に収納できるように形成させることで、上記のように溝部２１にナットＮを摺動可能に収納させることができる。また、溝部２１にナットＮを収納させる場合、溝部２１の底面の中央に、このナットＮの雌ねじに螺結可能な雄ねじを収納可能な凹溝を更に底方向へ窪ませて形成させれば、ナットＮに羅結させた雄ねじの先端が溝部２１の底面に当接させずに、雌ねじ部分を全領域用いた強固な締結を行うことができる。 Since the fixing bolt 9 to be fixed is slidably attached along the groove portion 21, the attachment fitting 4 attached via the male screw portion 92 is fixed at an arbitrary position in the longitudinal direction of the upper frame 2a and the lower frame 2b. Can be made. For this reason, there are obstacles such as electrical wiring, reinforcing members such as reinforced concrete reinforcing bars, joints of concrete, and the like that contact the mounting bracket 4 and fixing the construction bolts at the construction site where the sound absorbing plate 1 is fixed. Even when the fixing bolt 9 is slid, the position of the mounting bracket 4 can be changed by sliding the fixing bolt 9 to easily avoid the obstacle.
Further, in this embodiment, the bolt head 91 of the fixing bolt 9 as the fastening member is accommodated in the groove portion 21 and the nut N as the member to be fastened is fastened. A nut N as a member may be slidably stored, and a fixing bolt 9 as a member to be fastened may be screwed to the female screw portion from the outside of the groove portion 21. By forming the groove portion 21 so that the bolt head 91 of the fixing bolt 9 can be slidably accommodated therein, the nut N can be slidably accommodated in the groove portion 21 as described above. Further, when storing the nut N in the groove portion 21, a concave groove capable of storing a male screw that can be screwed into the female screw of the nut N is further formed in the center of the bottom surface of the groove portion 21 so as to be further depressed in the bottom direction. The end of the male screw threaded on the nut N is not brought into contact with the bottom surface of the groove portion 21, so that it is possible to perform firm fastening using the entire area of the female screw portion.

また各取付金具４が、その枠当接板部４１を、上枠２ａの上面、又は下枠２ｂの下面にそれぞれ当接させて固定されるので、特に吸音板１を立設する壁面に沿って固定させる場合等には、下枠２ｂに取り付けた取付金具４の枠当接板部４１が、下枠２ｂの下面を支持してその荷重を支える。固定ボルト９などの締結部材は、雄ねじ部９２に引張力が働くと、使用過程で雄ねじ部９２が伸び、締結力が失われて締結が緩みやすくなる可能性が大きくなるが、本実施形態の下枠２ｂに取り付けられた固定ボルト９の雄ねじ部９２には、吸音板１の荷重による引張力が働かないので、雄ねじ部９２が伸びにくいものとなされ、固定ボルト９による締結が緩み難いものとなされる。また、上枠２ａの溝部２１に取り付けた固定ボルト９の雄ねじ部９２には吸音板１の荷重がかかるが、その荷重は下枠２ｂに取り付けた取付金具４に分散されて軽減されるので、固定ボルト９の雄ねじ部９２が伸びにくく、その締結が緩み難いものとなされる。
またこの場合、、取付金具４の施工ボルト挿通穴４４を挿通させる施工ボルトに関しても、吸音板１の荷重はその雄ねじ部分の径方向にかかり、雄ねじ部分を伸ばす方向にはかからないので、その締結が緩み難いものとなされる。 Further, each mounting bracket 4 is fixed with its frame abutting plate portion 41 abutting against the upper surface of the upper frame 2a or the lower surface of the lower frame 2b. For example, the frame contact plate 41 of the mounting bracket 4 attached to the lower frame 2b supports the lower surface of the lower frame 2b to support the load. In the fastening member such as the fixing bolt 9, when a tensile force acts on the male screw portion 92, the male screw portion 92 extends in the process of use, and the possibility that the fastening force is lost and the fastening is easily loosened increases. The male screw portion 92 of the fixing bolt 9 attached to the lower frame 2b is not subject to the tensile force due to the load of the sound absorbing plate 1, so that the male screw portion 92 is difficult to extend and the fastening with the fixing bolt 9 is difficult to loosen. Made. Further, although the load of the sound absorbing plate 1 is applied to the male thread portion 92 of the fixing bolt 9 attached to the groove portion 21 of the upper frame 2a, the load is distributed and reduced by the mounting bracket 4 attached to the lower frame 2b. The male screw portion 92 of the fixing bolt 9 is difficult to extend and the fastening thereof is difficult to loosen.
Also, in this case, with respect to the construction bolt that is inserted through the construction bolt insertion hole 44 of the mounting bracket 4, the load of the sound absorbing plate 1 is applied in the radial direction of the male screw portion, and does not apply in the direction of extending the male screw portion. It will be difficult to loosen.

また、本実施形態の取付金具４は、枠当接板部４１の前後方向の長さを、吸音板１の厚みより長く形成させており、施工面当接板部４２を施工面に当接させて吸音板１を施工したときに、吸音板１の後部と施工面との間に隙間が設けられるようになされている。これによって、施工面の面上に電気配線などの障害物などが存在しても、吸音板１の後部に接触させることなく施工することができる。   Further, in the mounting bracket 4 of the present embodiment, the length of the frame abutting plate portion 41 in the front-rear direction is longer than the thickness of the sound absorbing plate 1, and the construction surface abutting plate portion 42 abuts the construction surface. Thus, when the sound absorbing plate 1 is constructed, a gap is provided between the rear portion of the sound absorbing plate 1 and the construction surface. Thereby, even if an obstacle such as an electric wiring exists on the surface of the construction surface, the construction can be performed without contacting the rear portion of the sound absorbing plate 1.

１ 吸音板
２ａ 上枠
２ｂ 下枠
２１ 溝部
２２ 開口縁
２５ 前延設片
２６ 後延設片
３ 縦枠
３５ 前延設片
３６ 後延設片
４ 取付金具
４１ 枠当接板部
４２ 施工面当接板部
４３ 固定ボルト挿通穴
４４ 施工ボルト挿通穴
４５ 曲部
５ 前面板
５１ 開口部
６ 吸音材
７ 補強材
７１ 取付片
８ 押え板
９ 固定ボルト
９１ ボルト頭部
９２ 雄ねじ部
Ｆ 枠体
Ｎ ナット DESCRIPTION OF SYMBOLS 1 Sound absorption board 2a Upper frame 2b Lower frame 21 Groove part 22 Opening edge 25 Front extension piece 26 Rear extension piece 3 Vertical frame 35 Front extension piece 36 Rear extension piece 4 Mounting bracket 41 Frame contact plate part 42 Construction surface contact Contact plate portion 43 Fixing bolt insertion hole 44 Installation bolt insertion hole 45 Curved portion 5 Front plate 51 Opening portion 6 Sound absorbing material 7 Reinforcing material 71 Mounting piece 8 Holding plate 9 Fixing bolt 91 Bolt head 92 Male thread portion F Frame body N Nut

Claims (2)

上枠と、下枠とを備えて構成された枠体の前方側に、多数の開口部を有する前面板が設けられ、
該前面板の後方には吸音材が前記枠体の内側に収納されて取り付けられた吸音板であって、
前記上枠及び下枠に外方に開口する溝部が長手方向に沿って全長に亘り形成され、
前記溝部は開口縁が内側へ突出して形成されており、
前記溝部は内側に締結部材が摺動自在に収納可能となされていると共に、前記締結部材に被締結部材が外方から締結可能となされている吸音板であって、
上枠に形成された前記溝部は上方に開口して形成されると共に、下枠に形成された前記溝部は下方に開口して形成され、かつ前記締結部材は固定ボルトから形成され、
前記溝部の内側に前記固定ボルトのボルト頭部が収納されて、該固定ボルトの雄ねじ部が外方に向けて取り付けられ、
前記固定ボルトを介して前記上枠及び下枠に取付金具がそれぞれ取り付けられ、
前記各取付金具は、枠当接板部と、該枠当接板部に対して垂直に延設される施工面当接板部とを有して形成され、
前記各取付金具は前記施工面当接板部をそれぞれ後方に向けられ、前記枠当接板部を前記上枠の上面及び下枠の下面にそれぞれ当接されて取り付けられており、
前記各取付金具の施工面当接板部を施工面に当接させて施工ボルトで固定可能になされていることを特徴とする吸音板。 A front plate having a large number of openings is provided on the front side of a frame configured with an upper frame and a lower frame,
A sound absorbing plate is mounted on the rear side of the front plate with a sound absorbing material housed inside the frame,
Grooves that open outwardly in the upper and lower frames are formed over the entire length along the longitudinal direction,
The groove is formed with an opening edge protruding inward,
The groove portion is a sound absorbing plate in which a fastening member can be slidably housed inside, and a fastening member can be fastened to the fastening member from the outside,
The groove formed in the upper frame is formed to open upward, the groove formed in the lower frame is formed to open downward, and the fastening member is formed from a fixing bolt,
The bolt head portion of the fixing bolt is housed inside the groove portion, and the male screw portion of the fixing bolt is attached facing outward,
Mounting brackets are respectively attached to the upper frame and the lower frame via the fixing bolts,
Each of the mounting brackets is formed having a frame contact plate portion and a construction surface contact plate portion extending perpendicularly to the frame contact plate portion,
Each of the mounting brackets is directed so that the construction surface contact plate portion is directed rearward, and the frame contact plate portion is attached in contact with the upper surface of the upper frame and the lower surface of the lower frame,
A sound absorbing plate, wherein the construction surface abutting plate portion of each of the mounting brackets is brought into contact with the construction surface and can be fixed with a construction bolt. 上枠と、下枠とを備えて構成された枠体の前面側に、多数の開口部を有する前面板が設けられ、
該前面板の後方には吸音材が前記枠体の内側に収納されて取り付けられた吸音板の施工方法であって、
前記上枠及び下枠に外方に開口する溝部が長手方向に沿って全長に亘り形成され、
前記溝部は開口縁が内側へ突出して形成され、
前記溝部の内側に締結部材を摺動自在に収納させ、前記溝部の外方から前記締結部材へ締結させる被締結部材の締結によって取付金具を前記吸音板に取り付けて、該取付金具を介して前記吸音板を施工場所へ固定する吸音板の施工方法であって、
上枠に形成された前記溝部は上方に開口して形成されると共に、下枠に形成された前記溝部は下方に開口して形成され、
前記取付金具は、枠当接板部と、該枠当接板部に対して垂直に延設される施工面当接板部とを有して形成され、
前記各取付金具の前記施工面当接板部をそれぞれ後方に向け、前記枠当接板部を前記上枠の上面及び下枠の下面にそれぞれ当接させて取り付け、
前記各取付金具の施工面当接板部を施工面に当接させて施工ボルトで固定させることを特徴とする吸音板の施工方法。 A front plate having a large number of openings is provided on the front side of a frame body configured to include an upper frame and a lower frame,
A sound absorbing plate is installed on the back side of the front plate, and a sound absorbing material is housed inside the frame body and attached.
Grooves that open outwardly in the upper and lower frames are formed over the entire length along the longitudinal direction,
The groove is formed with an opening edge protruding inward,
A fastening member is slidably housed inside the groove portion, and a mounting bracket is attached to the sound absorbing plate by fastening a fastening member that is fastened to the fastening member from the outside of the groove portion, A sound absorbing plate construction method for fixing the sound absorbing plate to a construction site,
The groove formed in the upper frame is formed to open upward, and the groove formed in the lower frame is formed to open downward,
The mounting bracket is formed having a frame contact plate portion and a construction surface contact plate portion extending perpendicularly to the frame contact plate portion,
The construction surface abutting plate portion of each of the mounting brackets is directed rearward, and the frame abutting plate portion is attached to the upper surface of the upper frame and the lower surface of the lower frame,
A construction method for a sound absorbing plate, wherein the construction surface abutment plate portion of each mounting bracket is brought into contact with the construction surface and fixed with a construction bolt.
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