JP3848553B2

JP3848553B2 - Soundproof wall stopper

Info

Publication number: JP3848553B2
Application number: JP2001306155A
Authority: JP
Inventors: 富雄松井; 信臼井; 達雄中野; 裕松村; 修久野; 厚生入佐
Original assignee: 株式会社北計工業
Priority date: 2001-10-02
Filing date: 2001-10-02
Publication date: 2006-11-22
Anticipated expiration: 2021-10-02
Also published as: JP2003105723A

Description

【０００１】
【発明の属する技術分野】
本発明は、防音壁を構成する吸音パネルを支柱に固定する防音壁用止め金具に関する。
【０００２】
【従来の技術】
従来、高速道路、鉄道線路などの両脇に立設される防音壁は、吸音パネルの幅に対応した間隔を以て道路側縁に沿って立設された支柱間に複数の吸音パネルを縦に積み重ねることで構成している。
支柱はＨ形鋼から成り、隣接する支柱同士はその凹溝を内向させており、該凹溝に吸音パネルの側縁をスライド自在に保持している。
凹溝は吸音パネルの肉厚より幅広で、吸音パネルはその前面の吸音面を凹溝の幅内で車道側へ片寄せ、凹溝における吸音パネル背面側の隙間に止め金具を楔の様に打ち込んで固定している。
止め金具は、例えば図29に示す様に、薄肉な帯状金属板を所定形状に屈曲形成したものにして、開閉方向に弾性を有する略凹字状の楔子体ａと、該楔子体ａの一方ｂの上端より凹字の内側へ略く字状に連続形成した内側支え部ｃと、楔子体ａの他方ｄの上端より斜め上方へ突出した支持部ｅとから構成されている。
そして、支柱Ｔ間に介装した最下層の吸音パネルＰの左右側縁を止め金具で支柱Ｔの凹溝Ｄに楔留めし、同様な手順で積み上げられる各吸音パネルＰを楔留めして防音壁Ｗを形成している。
【０００３】
【発明が解決しようとする課題】
しかしながら、上記構成の止め金具による楔留めにあっては、凹溝Ｄにおける吸音パネルＰ背面側の隙間Ｓに、楔子体ａの下端側を挿入し、ハンマーで楔子体ａの上端を何度も叩打して楔留めせねばならず、その楔留め作業に手間、時間を要すると共に、叩打によって止め金具が変形して役に立たない場合があった。
特に民家に隣接する場所での夜間工事では、ハンマーの叩打で生ずる打撃音が騒音となる課題を有していた。
【０００４】
上記の様に楔留めされた止め金具は、図29より明らかな通り、隙間Ｓ内で拡開している楔子体ａの他方ｄ及び支持部ｅの夫々が吸音パネルＰ背面及び上面に当接し、楔子体ａの一方ｂの上端のみが内側支え部ｃの弾発力により凹溝Ｄの側壁Ｄ１を圧接することにより、吸音パネルＰを車道側へ押圧している。
かかる状態において、楔子体ａの他方ｄは、吸音パネルＰ背面に面接しているとしても、内側支え部ｃの弾発力が作用するのは、内側支え部ｃが他方ｄの内面に接触している屈曲部だけであって、かかる部位と上下位置の異なる楔子体ａの一方ｂの上端の２点で吸音パネルＰを凹溝Ｄ内の車道側へ押圧しているに過ぎず、上記構成の止め金具では、吸音パネルＰを凹溝Ｄ内に押圧保持するに十分な押圧力が期待できない。
加えて、隙間Ｓ内に配した楔子体ａにおいて、その一方ｂの上端以外は凹溝Ｄの側壁Ｄ１に未接触で、該側壁Ｄ１との間に隙間を有しているので、安定性に欠け、ガタつき易く、走行する車の風圧や暴風等を吸音パネルＰが受けると、騒音が発生する課題を有していた。
【０００５】
【課題を解決するための手段】
本発明は、上記課題に鑑み、一対の対向壁の下端部の夫々を開放方向に弾性を有する略Ｕ字状の折れ曲がり部で連結して楔子体と成し、該楔子体の対向壁の左右端部間にその上下に渡って前記開放方向に付勢したバネ材を介装すると共に、折れ曲がり部と対向壁下端との連結部位間の最大開き幅を、吸音パネル背面と凹溝側壁で構成される隙間よりも幅大に設定することにより、前記隙間に楔子体を介在すると、各対向壁の外面全体が吸音パネル背面と凹溝側壁の夫々を密着状に押圧し、吸音パネルを凹溝内に十分な押圧力で以て安定的に押圧保持する様にして、上記課題を解決する。
又、楔子体の対向壁の内側中間部上下に離間配置すると共に、対向壁の夫々に上下で食い違う様に突設した係止片と、該係止片に対し、これらを重合保持、又は重合解除する様に係脱自在に設けた掛け外し片とから成るロック手段を設けることにより、折れ曲がり部と対向壁下端との連結部位間の最大開き幅が上記隙間よりも幅大に設定されていても、バネ材及び折れ曲がり部の弾性力に抗して楔子体を上記隙間よりも薄肉な偏平状に圧縮保持できるため、吸音パネル背面と側壁との隙間に難なく介入させてロック手段を解除することで、上記の如く楔子体を拡開変形させる様にして、叩打することなく楔子体をセットすると共に、その作業性の向上を図る様にして、上記課題を解決する。
【０００６】
【発明の実施の形態】
以下本発明の一実施例を図面に基づいて説明する。
図に示す止め金具１は、吸音パネルＰの幅に対応した間隔を以て高速道路等の側縁に沿って立設された支柱Ｔ間に複数の吸音パネルＰを縦に積み重ねることで構成される防音壁Ｗにおいて、Ｈ形鋼から成る支柱Ｔの凹溝Ｄ内に配した吸音パネルＰの左右側縁の背面と、これに対向する凹溝Ｄの側壁Ｄ１との隙間Ｓ（凹溝Ｄの幅と吸音パネルＰの肉厚との差に相当）に介装することにより、吸音パネルＰの左右側縁を凹溝Ｄ内に強固に保持するものである。
そして、止め金具１は、一対の対向壁２、2aを設けると共に、該対向壁２、2aの下端部の夫々を開放方向に弾性を有する略Ｕ字状の折れ曲がり部３で連結して成る楔子体４と、該楔子体４の対向壁２、2aの左右端部間の夫々にその上下に渡って前記開放方向へ付勢する様に介装した左右一対のバネ材５と、該バネ材５間（対向壁２、2a内側の中間部）に設けられ、且つバネ材５及び折れ曲がり部３の弾性力に抗して楔子体４を隙間Ｓよりも薄肉な略偏平状に圧縮保持するロック手段６とから主に構成している。
【０００７】
対向壁２、2aは、薄肉で縦長矩形状の金属板製にして、一方の対向壁２の上端部には、ワイヤ挿通孔７を設けると共に、吸音パネルＰの上面に載置する支持板８を楔子体４の開放方向（外方）へ所定角度（後述の吸音パネルＰ上面の傾斜角度に対応）を以て延設している。
又、対向壁２、2aは、その左右側縁を相互に対向する様に屈曲形成することにより、後述するバネ材５の伸縮方向端部5aを係止するバネ止め部９を設けている。
【０００８】
折れ曲がり部３は、細長帯板をＵ字状に屈曲してその開放方向に弾性を有するものにして、対向壁２、2aの左右下端部の夫々を一体的に連結しており、対向壁２、2a間に介装したバネ材５と折れ曲がり部３の弾性力によって対向壁２、2aの上端部間の最大開き幅を上記隙間Ｓよりも幅大にして、且つ、折れ曲がり部３と対向壁２、2a下端との連結部位10間の最大開き幅を上記隙間Ｓよりも幅大に設定している。
又、折れ曲がり部３は、その上端（対向壁２、2a下端部との連結部位10）が対向壁２、2a下端部の左右から発し、その下端（折り返し部位11）が対向壁２、2aの縦軸線に指向する様に斜行する様に成している。
そして、折れ曲がり部３の折り返し部位11を、上記の如く対向壁２、2aに比し幅小に設定することにより、折り返し部位11に可撓性を付与して折り返し部位11で以て対向壁２、2aを捻転自在と成している。
又、折れ曲がり部３の変形例としては、図16に示す様に、連結部位10を対向壁２、2aと同幅と成し、下方へ向かうに従い徐々に幅狭と成した（正面視）略逆三角形状に形成したものが挙げられる。
この折れ曲がり部３も、その下端の折り返し部位11が幅小であるため、上記と同様に、折り返し部位11に可撓性を付与して折り返し部位11で以て対向壁２、2aを捻転自在と成る。
【０００９】
バネ材５は、バネ鋼鋼材製にして、上下に長いＵ字形バネから成り、その伸縮方向端部5aを楔子体４の左右外方へ指向する様に対向壁２、2aの左右端部間に介装している。
そして、対向壁２、2aの左右側縁に設けたバネ止め部９がバネ材５の上記端部5aを係止し、バネ材５が楔子体４の外部へ食み出さない様にしている。
又、対向壁２の内面において、バネ材５の下端部に対応した位置に打ち抜き形成により突出した固定用爪12を設け、該固定用爪12にてバネ材５の下端部を係止し、固定用爪12と上記バネ止め部９とにより、対向壁２、2a間におけるバネ材５の位置を保持している。
【００１０】
ロック手段６は、楔子体４の対向壁２、2aの内側中間部上下に離間配置すると共に、対向壁２、2aの夫々に上下で食い違う様に突設した係止片13、14と、該係止片13、14に対し、これらを重合保持、又は重合解除する様に係脱自在に設けた掛け外し片15とから成る。
本実施例では、対向壁２には上下に離間配置した２つの係止片13、14を設け、この２つの係止片13、14の間隔に介装される１つの係止片13、14を対向壁2aに設けているが、対向壁２、2aの夫々に単一の係止片13、14を上下に食い違いに配置しても良い。
【００１１】
上方係止片13の夫々は、中央にリップ溝16を構成して成る左右一対のＬ字突片13ａ、13ｂから成り、該Ｌ字突片13ａ、13ｂは、対向壁２、2aの所定部位を外側から内側へ打ち出し形成されている（図７参照）。
下方係止片14の夫々は、リップ溝16より幅小なループ状突片から成り、上記と同様に、平面視略コ字状に打ち出し形成されている（図９参照）。
そして、楔子体４を偏平状に変形した状態において、上下相互で食い違う様に重合した上方係止片13及び下方係止片14は、同一軸線上にリップ溝16及びループホール（ホール）17の夫々がオーバーラップする様に成している。
【００１２】
掛け外し片15は、上方係止片13のリップ溝16に対応した幅を有すると共に、重合した上方係止片13のリップ溝16に挿脱自在と成した帯板状にして、且つ上端が楔子体４より突出する上方差し込み部18と、下方係止片14のループホール17に対応した幅を有し、且つ上方係止片13を構成するＬ字突片13ａ、13ｂの先端部間の間隙13ｃより幅小に形成すると共に、重合した下方係止片14のループホール17に挿脱自在と成した帯板状の下方差し込み部19とを上下連続形成している。
又、上方差し込み部18の上端は円形状に形成し、その中心に円孔18ａを設けている。
掛け外し片15の下方差し込み部19は、その長さを以下の様に設定するのがより望ましい。
即ち、上方及び下方差し込み部18、19の挿入により重合保持された上方係止片13のリップ溝16及び下方係止片14のループホール17から上方及び下方差し込み部18、19を同時に離脱する様に、掛け外し片15の下方差し込み部19を長さ設定している。
【００１３】
又、掛け外し片15の下方差し込み部19には幅方向左右に突設した凸状のストッパー20を設けている。
このストッパー20は、重合した上方及び下方係止片13、14の夫々より上方及び下方差し込み部18、19を離脱させた重合解除状態において、対向壁２、2aの上方及び下方係止片13、14の間に設けた抜止め片21に掛止する様に成すと共に、重合した上方及び下方係止片13、14に上方及び下方差し込み部18、19を挿入した重合保持状態において、上側の下方係止片14に掛止する様に成す様に、下方差し込み部19の適所に設定している。
【００１４】
抜止め片21は、楔子体４の対向壁２、2aの夫々に左右で食い違う様に突設した垂直部21ａと、該垂直部21ａの先端を前後で食い違う様に鉤状に屈曲形成した水平部21ｂとから成るＬ字突片であり、該Ｌ字突片21は、対向壁２、2aの所定部位を外側から内側へ打ち出し形成されている。
そして、Ｌ字突片21は、上記重合保持状態（楔子体４の偏平状態に相当）で、Ｌ字突片21の内角部21ｃを対角配置させた空間22に、掛け外し片15の下方差し込み部19を遊貫する様に成している（図８参照）。
又、上記重合解除状態で、Ｌ字突片21の水平部21ｂが下方差し込み部19を挟持する様に成し、この時、バネ材５の伸縮方向端部5a全長が対向壁２、2a内面に接した状態で対向壁２、2aの間隔を上記隙間Ｓより幅大と成す様に設定し、かかる状態の対向壁２、2aの開き幅を、規制（された）最大幅と以下称する。
【００１５】
次に、止め金具１の変形例を図18〜28に基づき説明する。この止め金具1aは、隙間Ｓが比較的広いものに対応する様に楔子体４を厚肉に形成したタイプであり、上記止め金具１と同一又は相当部分には同じ符号を付し、説明を省略する。この止め金具1aは、バネ材５の形状と、ロック手段６に関連する構成を変形している。
バネ材５は、波形の段を奇数と成した上下に長いジグザグバネから成り、その伸縮方向端部5aを楔子体４の左右外方へ指向する様に対向壁２、2aの左右端部間に介装している。
【００１６】
又、ロック手段６における上方及び下方係止片13、14の夫々は対向壁２、2aに１つずつ突設している。
上方係止片13の夫々は、先端側が幅小な凸状穴23を貫設した舌状片から成り、又下方係止片14の夫々は、凸状穴23における幅小穴23ａと同幅の方形穴24を貫設した舌状片から成り、上方及び下方係止片13、14は、対向壁２、2aの所定部位を外側から内側へ打ち出し形成することにより形成している（図23、24、26参照）。
そして、楔子体４を偏平状に変形した状態において、上下相互で食い違う様に重合した上方係止片13及び下方係止片14は、同一軸線上に凸状穴23における幅大穴23ｂ及び方形穴24の夫々がオーバーラップする様に成している。
【００１７】
掛け外し片15は、上記止め金具１と同様に幅の異なる帯板状の上方差し込み部18と下方差し込み部19を上下連続形成している。
上方差し込み部18は、上端が楔子体４より突出し、上方係止片13の凸状穴23における幅大穴23ｂに対応した幅を有すると共に、重合した幅大穴23ｂに挿脱自在と成している。
又、重合した上方及び下方係止片13、14に上方及び下方差し込み部18、19を挿入した重合保持状態において、楔子体４より突出した掛け外し片15の上方差し込み部18上端には、円孔18ａを設けた円形部に下方連続すると共に、上側の上方係止片13に掛止する様に、凸状穴23における幅大穴23ｂより幅大と成した位置決め手段25を設けている。
下方差し込み部19は、上方係止片13の幅小穴23ａ及び下方係止片14の方形穴24に対応した幅を有すると共に、重合した下方係止片14の方形穴24に挿脱自在と成している。
又、下方差し込み部19は、止め金具１と同様に、上方及び下方差し込み部18、19の挿入により重合保持された上方係止片13の幅大穴23ｂ及び下方係止片14の方形穴24から上方及び下方差し込み部18、19を同時に離脱する様に、長さ設定するのが、より望ましい。
そして、下方差し込み部19には、幅方向左右に凸状に突設したストッパー20を設け、該ストッパー20は、重合した上方及び下方係止片13、14の夫々より上方及び下方差し込み部18、19を離脱させた重合解除状態において、対向壁２、2aの上方及び下方係止片13、14の間に設けた後述の抜止め片26に掛止する様に位置設定されている。
尚、止め金具１に設けたストッパー20は、上記重合保持状態で上側の下方係止片14に掛止すると共に、上記重合解除状態で抜止め片26に掛止する様に構成されて、止め金具1aの位置決め手段25を兼用しているが、止め金具1aに設けたストッパー20は、上記重合解除状態にのみ抜止め片26に掛止する様に設定されている。
【００１８】
抜止め片26は、先端側が幅小な凸状穴27を貫設すると共に、対向壁２、2aの夫々に上下で食い違う様に突設した舌状片から成り、該舌状片26は、対向壁２、2aの所定部位を外側から内側へ打ち出し形成されている。
そして、舌状片26は、上記重合保持状態で、凸状穴27の重合した幅大穴27ａに上記掛け外し片15の下方差し込み部19を上下動自在に遊貫する様に成している。又、上記重合解除状態で、凸状穴27の重合した幅小穴27ｂが下方差し込み部19を挟持する様に成し、この時、バネ材５の伸縮方向端部5a全長が対向壁２、2a内面に接した状態で対向壁２、2aの間隔を上記隙間Ｓより幅大と成す様に設定し、かかる状態の対向壁２、2aの開き幅を、規制（された）最大幅と以下称する。
【００１９】
止め金具１、1aは、上記の様に構成されており、止め金具１、1aの各部材は、ダクロダイズド（登録商標）処理による表面処理を施し、錆び止めしている。
上記処理は、溶融亜鉛メッキによる表面処理よりも焼き付け温度が低い（約３００度）ため、特にバネ材のバネ性能に影響を及ぼすことはない。
【００２０】
次に、止め金具１、1aの作用について説明する。
先ず、止め金具１における楔子体４の偏平状態では、上端が楔子体４より突出した掛け外し片15が、重合したリップ溝16、抜止め片21で構成する空間22、及び重合したループホール17を縦貫している。
即ち、掛け外し片15の上方差し込み部18が重合したリップ溝16に位置し、上方差し込み部18より連続する下方差し込み部19が上記空間22を遊貫すると共に、ストッパー20が対向壁２に設けた上側の下方係止片14に掛止し、ストッパー20より先の下方差し込み部19の下端が重合したループホール17内に位置している。
この様に、上方及び下方差し込み部18、19が重合したリップ溝16及びループホール17内に存して上方及び下方係止片13、14に係合することにより、上方及び下方係止片13、14を介して対向壁２、2aをバネ材５及び折れ曲がり部３の弾性力に抗して略平行に引き寄せ、楔子体４を隙間Ｓより薄肉な偏平状に保持している。又、止め金具1aにおける楔子体４の偏平状態では、上端が楔子体４より突出した掛け外し片15が、重合した凸状穴23、27の幅大穴23ｂ、27ａ及び方形穴24を縦貫している。
即ち、掛け外し片15の上方差し込み部18が重合した凸状穴23の幅大穴23ｂに位置し、上方差し込み部18より連続する下方差し込み部19が重合した凸状穴27の幅大穴27ａを遊貫すると共に、ストッパー20が対向壁２に設けた上側の下方係止片14に掛止し、ストッパー20より先の下方差し込み部19の下端が重合した方形穴24内に位置している。
この様に、上方及び下方差し込み部18、19が重合した凸状穴23の幅大穴23ｂ及び方形穴24内に存して上方及び下方係止片13、14に係合することにより、上方及び下方係止片13、14を介して対向壁２、2aをバネ材５及び折れ曲がり部３の弾性力に抗して略平行に引き寄せ、楔子体４を隙間Ｓより薄肉な偏平状に保持している。
上記した止め金具１、1aにおける楔子体４の偏平状態では、対向壁２、2a間の左右に存するバネ材５は、その伸縮方向端部5a間の間隙が狭く成る様に圧縮変形した状態で対向壁２、2aを押圧しているので、止め金具１（1a）では、重合したリップ溝16（幅大穴23ｂ）及びループホール17（方形穴24）内に存する上方差し込み部18及び下方差し込み部19の夫々は、上方係止片13及び下方係止片14によりその基端側へ強固に引張されることとなり、掛け外し片15の上記縦貫状態が堅固に維持され、容易に抜けない。
そして、上述の様に楔子体４が偏平化された状態で止め金具１、1aは、保管、輸送される。
【００２１】
そして、高速道路等の作業現場での止め金具１、1aの取付けにあたっては以下の様に成される。
ここに、吸音パネルＰは、前面と成る吸音面に多数のスリット又は所定形状の穴を形成した金属製又はプラスチック製のパネル型ケースにロックウール、グラスウールなどの吸音材を内装したものであり、吸音パネルＰのケースの上下面は、相互に平行な傾斜面と成し、多数の吸音パネルＰを支柱Ｔ間に介装して積み重ねた状態で、各吸音パネルＰの当接する上下面から音が漏れることを極力防止している。
又、吸音パネルＰにおいて、支柱Ｔの凹溝Ｄ内に配する左右側縁は、その長さに渡りＵ字溝Ｐ１を凹設し、該Ｕ字溝Ｐ１内にアイボルトＰ２を植設しており、該アイボルトＰ２のリング部には、凹溝Ｄ内に吸音パネルＰの左右側縁を配した際に落下防止用のワイヤＬを挿通している。
そして、現場において、隣接して立設する支柱Ｔの相対向する凹溝Ｄ間に吸音パネルＰの左右側縁を挿入し、吸音パネルＰの吸音面を凹溝Ｄの幅内で車道側へ片寄せ、止め金具１、1aにおける支持板８のワイヤ挿入孔７にワイヤＬを挿通すると共に支持板８を吸音パネルＰの左右側縁の上面に載置し、楔子体４を凹溝Ｄにおける吸音パネルＰの背面側の隙間Ｓに配する。
【００２２】
偏平化している楔子体４は隙間Ｓより薄肉に設定されているため、隙間Ｓに楔子体４を難なく挿入でき、かかる状態において、対向壁２は吸音パネルＰの背面に面一に接触し、対向壁2aと凹溝Ｄの側壁Ｄ１とは略平行で数ミリ程度の狭小間隔を以て離間している。
そして、楔子体４から突出している掛け外し片15（上方差し込み18）の上端に設けた円孔18ａに梃子状の治具（図示せず）を差込んで引き上げることにより、掛け外し片15を上動する。
掛け外し片15を上動させると、止め金具１では、上方及び下方差し込み部18、19が重合したリップ溝16及びループホール17内より離脱し、リップ溝16内に下方差し込み部19の上方部位が位置するが、下方差し込み部19はＬ字突片13ａ、13ｂの先端部間の間隙13ｃよりも小幅で各リップ溝16を重合保持できないので、上方及び下方係止片13、14が上方及び下方差し込み部18、19によって係止されることで対向壁２、2aを偏平状に引き寄せていた状態が解除され、バネ材５及び折れ曲がり部３の弾性力により対向壁２、2aが拡開して吸音パネルＰと側壁Ｄ１を押圧する。
この対向壁２、2aの拡開幅は、規制最大幅より幅小で隙間Ｓに対応しているため、抜止め片21の水平部21ｂは、下方差し込み部19に未接触ではあるが、楔子体４の偏平時よりも近接している（図８、10参照）。
又、止め金具1aでは、上方及び下方差し込み部18、19が重合した凸状穴23の幅大穴23ｂ及び方形穴24内より離脱し、重合した凸状穴23、27の幅小穴23ａ、27ｂ内に下方差し込み部19の上方及び下方部位が位置するため、上方及び下方係止片13、14が上方及び下方差し込み部18、19によって係止されることで対向壁２、2aを偏平状に引き寄せていた状態が解除され、バネ材５及び折れ曲がり部３の弾性力により対向壁２、2aが拡開して吸音パネルＰと側壁Ｄ１を押圧する。
この対向壁２、2aの拡開幅は、規制最大幅より幅小で隙間Ｓに対応しているため、下方差し込み部19は重合した凸状穴23、27の幅小穴23ａ、27ｂ内に遊貫されてはいるが、その遊び（重合した幅小穴23ａ、27ｂにおける下方差し込み部19との隙間）は、楔子体４の偏平時よりも狭小と成る（図25、27参照）。
かかる状態では、バネ材５の伸縮方向端部5aがその長さに渡って対向壁２、2aに接触して対向壁２、2aを開放方向へ付勢することにより、その付勢力が対向壁２、2aの外面全体に働き、側壁Ｄ１と吸音パネルＰとを押圧し、吸音パネルＰを凹溝Ｄ内の車道側へ安定的に押圧保持する。
尚、下方差し込み部19が重合したループホール17（方形穴24）より一旦抜けると、バネ材５等により対向壁２、2aが拡開変形するため、ループホール17（方形穴24）の重合空間の面積は狭まり、この狭まった重合空間に下方差し込み部19が入り込むことはない。
【００２３】
カーブした車道に対応して立設する防音壁Ｗでは、凹溝Ｄに平面視で湾曲した吸音パネルＰの左右側縁が斜めに挿入されることとなり、平面視において隙間Ｓの左右の長さが異なるが、この様な隙間Ｓに対しても、対向壁２、2aは対応して開き、吸音パネルＰを凹溝Ｄ内の車道側へ安定的に押圧保持する。
即ち、折れ曲がり部３の折り返し部位11は、可撓性が付与されて折り返し部位11で以て対向壁２、2aを捻転自在と成すと共に、対向壁２、2a間の左右端部に夫々独立したバネ材５を設けているので、左右の長さが異なる隙間Ｓに対応する様に、楔子体４の左右の一方が幅広く開き、他方が幅狭に開いて側壁Ｄ１と吸音パネルＰとを押圧する。
又、止め金具１、1aの楔子体４の開き幅に比し、隙間Ｓが比較的大きい場合には、図17に示す様に、対向壁２、2aと同長で同幅の断面コ字状の補助具28と共に、楔子体４を隙間Ｓに配し、対向壁２、2aを介したバネ材５の付勢力を側壁Ｄ１と吸音パネルＰとに作用させ、吸音パネルＰを凹溝Ｄ内の車道側へ安定的に押圧保持できる様にする。
【００２４】
【発明の効果】
要するに本発明は、Ｈ型鋼から成る支柱Ｔの凹溝Ｄの側壁Ｄ１間に嵌め込んだ吸音パネルＰの左右側縁の背面と、該背面に対向する凹溝Ｄの側壁Ｄ１との隙間Ｓに介装する防音壁用の止め金具１であって、一対の対向壁２、2aの下端部の夫々を開放方向に弾性を有する略Ｕ字状の折れ曲がり部３で連結して楔子体４を設け、該楔子体４の対向壁２、2a間に前記開放方向に付勢したバネ材５を介装し、バネ材５及び折れ曲がり部３の弾性力に抗して楔子体４を隙間Ｓよりも薄肉な偏平状に圧縮保持するロック手段６を設けて止め金具１を構成したので、隙間Ｓに偏平状態の楔子体４を配した後、ロック手段６による圧縮保持状態を解除することにより、弾性復帰するバネ材５と折れ曲がり部３の弾性力で吸音パネルＰを車道側へ押圧して凹溝Ｄ内にガタつきなく強固に固定することができ、従来の様に楔子体をハンマーで叩打することなく、容易に吸音パネルＰを楔留めでき、その作業効率を向上させることができると共に、騒音発生の不具合を解消できる。
又、対向壁２、2a下端と折れ曲がり部３との連結部位10間の最大開き幅を隙間Ｓよりも幅大に設定したので、連結部位10から上方の対向壁２、2aの最大開き幅は連結部位10間の最大開き幅よりも幅大となるため、ロック手段６による楔子体４の圧縮保持状態を解除してバネ材５と折れ曲がり部３の付勢力で対向壁２、2aを拡開させることにより、対向壁２、2a間に上下に渡って介装したバネ材５が対向壁２、2aの外面全体を吸音パネルＰ背面と凹溝Ｄの側壁Ｄ１の夫々に密着状に押圧させることができ、吸音パネルＰを凹溝Ｄ内に十分な押圧力で以て安定的に押圧保持することができる。
【００２５】
折れ曲がり部３は、その折り返し部位11を対向壁２、2aに比し幅小に設定することにより、折り返し部位11に可撓性を付与して折り返し部位11で以て対向壁２、2aを捻転自在、即ち、対向壁２、2a左右の開きを自在と成すと共に、対向壁２、2aの左右端部間の夫々に上下に渡って独立したバネ材５を配置したので、吸音パネルＰの左右側縁が斜めに凹溝Ｄに挿入された場合など、平面視で左右長さが異なる隙間Ｓを生じても、この異形な隙間Ｓに対応する様に、楔子体４の左右の一方が幅広く開き、他方が幅狭に開いて対向壁２、2aの外面を吸音パネルＰの背面と凹溝Ｄの側壁Ｄ１に隙間無く密着させ、且つ、対向壁２、2aが十分な押圧力で以て吸音パネルＰ背面と凹溝Ｄの側壁Ｄ１を押圧させることができる。
【００２６】
バネ材５は、上下に長いＵ字形バネ、又は波形の段を奇数と成したジグザグバネにして、且つ、バネ材５の伸縮方向端部5aを外方へ指向する様に対向壁２、2aの左右端部間に介装したので、楔留めした楔子体４において、伸縮方向端部5aがその長さに渡って対向壁２、2aに接触して対向壁２、2aを開放方向へ付勢でき、その付勢力を対向壁２、2aの外面全体へ作用させて、側壁Ｄ１と吸音パネルＰとを押圧できると共に、バネ材５の間（対向壁２、2a内側の中間部）にロック手段６を設けるスペースを形成できる。
又、対向壁２、2a左右側縁には、バネ材５の伸縮方向端部5aを係止するバネ止め部９を設けたので、楔子体４を偏平状と成すことでバネ材５を圧縮変形させても、対向壁２、2aの左右からバネ材５を食み出させず、バネ材５を溶接やビスなどで固定することなく、対向壁２、2a間の定位置に保持させられる。
この様にバネ材５は楔子体４に対し永久結合されていないため、ロック手段６によって圧縮又は圧縮解除された楔子体４の各状態に応じバネ材５を何らの規制なく変形させることができる。
又、従来の楔子体は薄板を所定形状に屈曲形成して楔子体の全体に弾性を付与したものであり、バネ鋼鋼材製でない従来のものは、その押圧力が当然ながら弱く、充分に吸音パネルＰを凹溝Ｄ内に押圧保持できない欠点を有しているが、本発明のものは、吸音パネルＰを押圧する主力要素であるバネ材５を楔子体４と別体としたため、バネ鋼鋼材から成るバネ材５の付勢力で強固に吸音パネルＰを押圧固定でき、かかる従来の欠点をも解消している。
又、対向壁２、2aの内面のバネ材５の下端部に対応する位置に、固定用爪12を設けたので、バネ止め部９と相俟ってバネ材５を対向壁２、2a間の定位置に保持させられる。
【００２７】
ロック手段６は、楔子体４の対向壁２、2aの内側中間部上下に離間配置すると共に、対向壁２、2aの夫々に上下で食い違う様に係止片13、14を突設すると共に、該係止片13、14に対し、これらを重合保持、又は重合解除する掛け外し片15を係脱自在に設けたので、開放方向に作用する楔子体４（折れ曲がり部３）の弾性力と、伸縮方向端部5aの長さ方向に渡って作用するバネ材５の弾性力に抗し、掛け外し片15にて上方及び下方係止片13、14の夫々を上下で食い違う様に重合保持することにより、対向壁２、2aが平行に近接する様に、対向壁２、2aの上下を引き寄せられ、楔子体４の薄肉偏平化を堅固に保持できると共に、楔子体４を略平板状にコンパクト化でき、楔子体４同士を嵩張らせることなく、多数を重ねて梱包することができる。
【００２８】
上方係止片13の夫々は、中央にリップ溝16を構成して成る左右一対のＬ字突片13ａ、13ｂから成り、下方係止片14の夫々は、リップ溝16より幅小なループ状突片から成り、掛け外し片15は、上方係止片13のリップ溝16に対応した幅を有すると共に、重合した上方係止片13のリップ溝16に挿脱自在と成した帯板状にして、且つ上端が楔子体４より突出する上方差し込み部18と、下方係止片14のループホール17に対応した幅を有し、且つ上方係止片13を構成するＬ字突片13ａ、13ｂの先端部間の間隙13ｃより幅小に形成すると共に、重合した下方係止片14のループホール17に挿脱自在と成した帯板状の下方差し込み部19とを上下連続形成したので、掛け外し片15の上方及び下方差し込み部18、19を重合したリップ溝16及びループホール17に嵌め込むことにより、バネ材５及び折れ曲がり部３の弾性力に抗して上方及び下方係止片13、14が上方及び下方差し込み部18、19に係止して対向壁２、2aを偏平状に引き寄せ、その状態を保持できる。
かかる状態では、バネ材５及び折れ曲がり部３の弾性力が対向壁２、2aと共にリップ溝16及びループホール17を開放方向へ付勢しているため、上方及び下方差し込み部18、19は重合したリップ溝16及びループホール17で挟持された状態と成り、リップ溝16及びループホール17からの掛け外し片15の脱落を防止でき、これにより、楔子体４が偏平状態に上記の如く保持された止め金具１の輸送中等に生ずる振動によってその偏平状態が解除することはない。
又、楔子体４を隙間Ｓに挿入した後、楔子体４の偏平状態を解除すべく掛け外し片15を専用の治具にて引き上げるに際し、上方差し込み部18（掛け外し片15）の上端が楔子体４より突出しているため、治具を掛け外し片15上端にセッティングし易く作業性が良い。
そして、掛け外し片15を所定長さ引き上げることによって、上方及び下方差し込み部18、19を重合したリップ溝16及びループホール17から離脱させると、リップ溝16内に下方差し込み部19の上方部位が位置するが、下方差し込み部19はＬ字突片13ａ、13ｂの先端部間の間隙13ｃよりも幅小で各リップ溝16を重合保持できないため、上方及び下方係止片13、14が上方及び下方差し込み部18、19によって係止されることで対向壁２、2aを偏平状に引き寄せていた状態が解除され、バネ材５及び折れ曲がり部３の弾性力により対向壁２、2aを拡開変形させられ、簡単に楔子体４を隙間Ｓに楔留めできる。
【００２９】
上方係止片13の夫々は、先端側が幅小な凸状穴23を貫設した舌状片から成り、下方係止片14の夫々は、凸状穴23における幅小穴23ａと同幅の方形穴24を貫設した舌状突片から成り、掛け外し片15は、上方係止片13の凸状穴23における幅大穴23ｂに対応した幅を有すると共に、重合した幅大穴23ｂに挿脱自在と成した帯板状にして、且つ上端が楔子体４より突出する上方差し込み部18と、上方係止片13の幅小穴23ａ及び下方係止片14の方形穴24に対応した幅を有すると共に、重合した下方係止片14の方形穴24に挿脱自在と成した帯板状の下方差し込み部19とを上下連続形成したので、掛け外し片15の上方及び下方差し込み部18、19を重合した凸状穴23の幅大穴23ｂ及び方形穴24に嵌め込むことにより、バネ材５及び折れ曲がり部３の弾性力に抗して上方及び下方係止片13、14が上方及び下方差し込み部18、19に係止して対向壁２、2aを偏平状に引き寄せ、その状態を保持できる。
かかる状態では、バネ材５及び折れ曲がり部３の弾性力が対向壁２、2aと共に幅大穴23ｂ及び方形穴24を開放方向へ付勢しているため、上方及び下方差し込み部18、19は重合した幅大穴23ｂ及び方形穴24で挟持された状態と成り、幅大穴23ｂ及び方形穴24からの掛け外し片15の脱落を防止でき、これにより、楔子体４が偏平状態に上記の如く保持された止め金具１の輸送中等に生ずる振動によってその偏平状態が解除することはない。
又、上方差し込み部18の上端が楔子体４より突出しているため、上記と同様に治具を掛け外し片15上端にセッティングし易く作業性が良い。
そして、掛け外し片15を引き上げ、上方及び下方差し込み部18、19を重合した凸状穴23の幅大穴23ｂ及び方形穴24から離脱させると、重合した凸状穴23、27の幅小穴23ａ、27ｂ内に下方差し込み部19の上方及び下方部位が位置するため、上方及び下方係止片13、14が上方及び下方差し込み部18、19によって係止されることで対向壁２、2aを偏平状に引き寄せていた状態が解除されバネ材５及び折れ曲がり部３の弾性力により対向壁２、2aを拡開変形させられ、簡単に楔子体４を隙間Ｓに楔留めできる。
【００３０】
上方及び下方差し込み部18、19の挿入により重合保持された上方及び下方係止片13、14から上方及び下方差し込み部18、19を同時に離脱する様に、掛け外し片15の下方差し込み部19を長さ設定したので、楔子体４を隙間Ｓに楔留めすべく掛け外し片15を引き上げた時に、その上方及び下方差し込み部18、19による上方及び下方係止片13、14の重合保持状態を一気に解除して楔子体４を瞬時に拡開変形させることができ、後の楔子体４による吸音パネルＰの楔留め作業を円滑に行うことができる。
【００３１】
掛け外し片15の下方差し込み部19には幅方向左右に突設した凸状のストッパー20を設けると共に、重合した上方及び下方係止片13、14の夫々より上方及び下方差し込み部18、19を離脱させた重合解除状態において、ストッパー20を掛止する抜止め片21、26を対向壁２、2aの上方及び下方係止片13、14の間に設けたので、偏平状態の楔子体４を隙間Ｓに配置して掛け外し片15を引き上げ楔子体４を拡開変形させると、ストッパー20が抜止め片21、26に掛止し、掛け外し片15をそれ以上引き上げできない様にして、楔子体４から完全離脱させず、対向壁２、2a間に保持させることにより、楔子体４の拡開変形後において掛け外し片15を廃棄する手間を省くと共に、高架な場所の作業であっても誤って掛け外し片15を落下させる様な危険をも回避できる。
【００３２】
ストッパー20は、重合した上方及び下方係止片13、14に上方及び下方差し込み部18、19を挿入した重合保持状態において、上側の下方係止片14に掛止する様に成すか、又は、重合した上方及び下方係止片13、14に上方及び下方差し込み部18、19を挿入した重合保持状態において、楔子体４より突出した掛け外し片15の上方差し込み部18上端には、上側の上方係止片13に掛止する位置決め手段25を設けたので、楔子体４の偏平化にあたり、下方差し込み部19を重合した下方係止片14内に必要以上に挿入させず、重合した上方係止片13内に上方差し込み部18を対応させると共に、その上端が楔子体４より突出させた一定の形態と成すことが容易にでき、偏平化作業を効率的に行える。
【００３３】
抜止め片21は、対向壁２、2aの夫々に左右で食い違う様に突設した垂直部21ａと、該垂直部21ａの先端を前後で食い違う様に鉤状に屈曲形成した水平部21ｂとから成るＬ字突片であり、上記重合保持状態で、Ｌ字突片の内角部21ｃを対角配置させた空間22に、上記掛け外し片15の下方差し込み部19を遊貫する様に成し、上記重合解除状態で、Ｌ字突片21の水平部21ｂが下方差し込み部19を挟持する様に成したもの、又は、抜止め片26は、先端側が幅小な凸状穴27を貫設すると共に、対向壁の夫々に上下で食い違う様に突設した舌状片から成り、上記重合保持状態で、凸状穴27の重合した幅大穴27ａに上記掛け外し片15の下方差し込み部19を遊貫する様に成し、上記重合解除状態で、凸状穴27の重合した幅小穴27ｂが下方差し込み部19を挟持する様に成し、この時、バネ材５の伸縮方向端部5a全長が対向壁２、2a内面に接した状態で対向壁２、2aの間隔を上記隙間Ｓより幅大（規制最大幅）と成したので、規制最大幅の範囲内であれば、隙間Ｓ内で拡開した楔子体４は、バネ材５の伸縮方向端部5aがその長さ方向全体で対向壁２、2aに付勢力を作用させられ、確実に対向壁２、2aの外面全体で側壁Ｄ１と吸音パネルＰとを押圧でき、吸音パネルＰを凹溝Ｄ内に十分な押圧力で以て安定的に押圧保持することができると共に、掛け外し片15を引き上げてもストッパー20を抜止め片21に掛止させられ、掛け外し片15を楔子体４から完全離脱させず、上記と同様なる効果を奏する。
【００３４】
楔子体４における一方の対向壁２、2aの上端部には、ワイヤ挿通孔７を設けると共に、吸音パネルＰの上面に載置される支持板８を延設したので、落下防止用のワイヤＬをワイヤ挿通孔７に通して支持板８を吸音パネルＰの側縁上面に載置することにより、凹溝Ｄ内において吸音パネルＰの背面の隙間Ｓの所定位置に偏平状態の楔子体４を保持でき、又高架な場所の作業であってもワイヤＬによって誤って止め金具１を落下させる様な危険をも回避できる等その実用的効果甚だ大である。
【図面の簡単な説明】
【図１】止め金具の正面図である。
【図２】図１の背面図である。
【図３】図１の左側面図である。
【図４】図１の平面図である。
【図５】図１の底面図である。
【図６】図１のＡーＡ断面図である。
【図７】図１のＢーＢ断面拡大図である。
【図８】図１のＣーＣ断面拡大図である。
【図９】図１のＤーＤ断面拡大図である。
【図１０】吸音パネル固定状態にある止め金具の水平断面図である。
【図１１】吸音パネルの固定過程におけるロック手段の解除前の断面図である。
【図１２】ロック手段の解除後の吸音パネル固定状態を示す断面図である。
【図１３】図１２における楔子体の正面図である。
【図１４】図１２における楔子体の平面図である。
【図１５】防音壁の断面図である。
【図１６】図１の変形例を示す正面図である。
【図１７】補助具を設けた止め金具の水平断面図である。
【図１８】楔子体を厚肉に形成した止め金具の正面図である。
【図１９】図１８の背面図である。
【図２０】図１８の左側面図である。
【図２１】図１８の平面図である。
【図２２】図１８の底面図である。
【図２３】図１８のＥーＥ断面図である。
【図２４】図１８のＦーＦ断面拡大図である。
【図２５】図１８のＧーＧ断面拡大図である。
【図２６】図１８のＨーＨ断面拡大図である。
【図２７】厚肉に形成した止め金具による吸音パネル固定状態を示す水平断面図である。
【図２８】ロック手段の解除後の吸音パネル固定状態を示す断面図である。
【図２９】従来の止め金具の断面図である。
【符号の説明】
１、1a 止め金具
２、2a 対向壁
３折れ曲がり部
４楔子体
５バネ材
5a 伸縮方向端部
６ロック手段
７ワイヤ挿通孔
８支持板
９バネ止め部
10 連結部位
11 折り返し部位
12 固定用爪
13 上方係止片
13ａ、13ｂＬ字突片
13ｃ間隙
14 下方係止片
15 掛け外し片
16 リップ溝
17 ループホール
18 上方差し込み部
19 下方差し込み部
20 ストッパー
21 抜止め片
21ａ垂直部
21ｂ水平部
21ｃ内角部
22 空間
23 凸状穴
23ａ幅小穴
23ｂ幅大穴
24 方形穴
25 位置決め手段
26 抜止め片
27 凸状穴
27ａ幅大穴
27ｂ幅小穴
Ｄ凹溝
Ｄ１側壁
Ｐ吸音パネル
Ｓ隙間
Ｔ支柱[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a soundproof wall stopper for fixing a sound absorbing panel constituting a soundproof wall to a column.
[0002]
[Prior art]
Conventionally, soundproof walls standing on both sides of expressways, railway tracks, etc., stack a plurality of sound absorbing panels vertically between pillars standing along the road side edge at intervals corresponding to the width of the sound absorbing panels. It consists of that.
The struts are made of H-shaped steel, and adjacent struts have their concave grooves facing inward, and the side edges of the sound absorbing panel are slidably held in the concave grooves.
The groove is wider than the wall thickness of the sound absorbing panel, and the sound absorbing panel has its sound absorbing surface fronted to the roadway side within the width of the groove, and the clasp is attached to the gap on the back side of the sound absorbing panel in the groove. It is fixed by driving.
For example, as shown in FIG. 29, the fastener is formed by bending a thin band-shaped metal plate into a predetermined shape, a substantially concave wedge body a having elasticity in the opening and closing direction, and one of the wedge bodies a. An inner support portion c continuously formed in a substantially U-shape from the upper end of b to the inside of the concave shape, and a support portion e protruding obliquely upward from the upper end of the other d of the wedge body a.
Then, the left and right edges of the sound absorbing panel P in the lowermost layer interposed between the columns T are wedged in the concave grooves D of the columns T with stoppers, and the sound absorbing panels P stacked in the same procedure are wedged and soundproofed. A wall W is formed.
[0003]
[Problems to be solved by the invention]
However, in the case of wedge fastening with the fastener having the above structure, the lower end side of the wedge body a is inserted into the gap S on the back side of the sound absorbing panel P in the concave groove D, and the upper end of the wedge body a is repeatedly applied with a hammer. It has to be struck and wedged, and it takes time and effort to perform the staking operation. In addition, there are cases in which the stopper is deformed by tapping and is not useful.
In particular, during night construction in a place adjacent to a private house, there was a problem that the hitting sound generated by hitting a hammer became noise.
[0004]
As is clear from FIG. 29, the other end d of the wedge body a and the support portion e that are widened in the gap S are in contact with the back surface and the upper surface of the sound absorbing panel P. Only the upper end of one side b of the wedge body a presses the side wall D1 of the concave groove D by the elastic force of the inner support portion c, thereby pressing the sound absorbing panel P toward the roadway side.
In such a state, even if the other side d of the wedge body a is in contact with the back surface of the sound absorbing panel P, the elastic force of the inner support part c acts on the inner support part c in contact with the inner surface of the other d. The above-mentioned configuration is merely pressing the sound-absorbing panel P toward the roadway side in the groove D at two points of the upper end of one b of the wedge body a which is different from the above-mentioned part and the vertical position. With such a fastener, a pressing force sufficient to press and hold the sound absorbing panel P in the concave groove D cannot be expected.
In addition, in the wedge body a arranged in the gap S, since the other than the upper end of one b is not in contact with the side wall D1 of the concave groove D and has a gap between the side wall D1, the stability is improved. When the sound absorbing panel P receives wind pressure, storms, or the like of a traveling vehicle, there is a problem that noise is generated.
[0005]
[Means for Solving the Problems]
In view of the above problems, the present invention forms a wedge body by connecting each of the lower end portions of a pair of opposed walls with a substantially U-shaped bent portion having elasticity in the opening direction. The spring material urged in the opening direction across the upper and lower sides is interposed between the end portions, and the maximum opening width between the connecting portions of the bent portion and the lower end of the opposing wall is constituted by the back surface of the sound absorbing panel and the side wall of the groove. If the wedge body is interposed in the gap, the entire outer surface of each facing wall presses the back surface of the sound absorbing panel and the side wall of the groove in close contact with each other, and the sound absorbing panel is recessed in the groove. The above-mentioned problem is solved by stably pressing and holding the inside with a sufficient pressing force.
In addition, while being spaced apart in the middle part of the inner side of the opposing wall of the wedge body, the locking pieces projecting so as to be different from each other on the opposing wall, and these holding pieces are superposed or held. By providing a locking means comprising an detachable piece that is detachably provided so as to be released, the maximum opening width between the connecting portions of the bent portion and the lower end of the opposing wall is set to be larger than the gap. However, since the wedge body can be compressed and held in a flat shape thinner than the gap against the elastic force of the spring material and the bent portion, the locking means can be released by intervening in the gap between the back surface of the sound absorbing panel and the side wall without difficulty. Thus, the above-mentioned problem is solved by expanding and deforming the wedge body as described above, setting the wedge body without hitting it, and improving the workability.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings.
The clasp 1 shown in the figure is a soundproofing structure in which a plurality of sound absorbing panels P are vertically stacked between columns T which are erected along a side edge of an expressway or the like with an interval corresponding to the width of the sound absorbing panel P. In the wall W, the gap S (the width of the groove D) between the back surfaces of the left and right side edges of the sound absorbing panel P disposed in the groove D of the column T made of H-shaped steel and the side wall D1 of the groove D facing the sound absorbing panel P. Is equivalent to the difference between the thickness of the sound absorbing panel P and the thickness of the sound absorbing panel P), whereby the left and right side edges of the sound absorbing panel P are firmly held in the groove D.
The stopper 1 is provided with a pair of opposing walls 2 and 2a, and a wedge formed by connecting the lower ends of the opposing walls 2 and 2a with a substantially U-shaped bent portion 3 having elasticity in the opening direction. A pair of left and right spring members 5 interposed between the body 4 and the left and right end portions of the opposing walls 2 and 2a of the wedge body 4 so as to be biased in the opening direction across the upper and lower sides thereof, and the spring members A lock that is provided between 5 (intermediate walls 2, 2a inside) and compresses and holds the wedge body 4 in a substantially flat shape thinner than the gap S against the elastic force of the spring material 5 and the bent portion 3. Mainly comprising means 6.
[0007]
The opposing walls 2 and 2a are made of a thin and vertically long rectangular metal plate, and a wire insertion hole 7 is provided at the upper end of one opposing wall 2 and a support plate 8 placed on the upper surface of the sound absorbing panel P. Is extended in the opening direction (outward) of the wedge body 4 with a predetermined angle (corresponding to the inclination angle of the upper surface of the sound absorbing panel P described later).
In addition, the opposing walls 2 and 2a are provided with spring stoppers 9 for locking the ends 5a of the spring material 5 described later by bending the left and right side edges so as to face each other.
[0008]
The bent portion 3 is formed by bending the elongated strip into a U shape and having elasticity in the opening direction, and integrally connecting the left and right lower end portions of the opposing walls 2 and 2a. The maximum opening width between the upper ends of the opposing walls 2 and 2a is made larger than the gap S by the elastic force of the spring member 5 and the bent part 3 interposed between the bent parts 3 and the bent parts 3 and the opposing walls. 2, 2a The maximum opening width between the connecting portions 10 with the lower end is set larger than the gap S.
Further, the bent portion 3 has its upper end (connecting portion 10 to the lower end portion of the opposing walls 2 and 2a) starting from the left and right of the lower end portion of the opposing wall 2 and 2a, and its lower end (folding portion 11) of the opposing walls 2 and 2a. It is made to skew so that it may point to a vertical axis.
Then, by setting the folded portion 11 of the bent portion 3 to be smaller than the opposed walls 2 and 2a as described above, the folded portion 11 is given flexibility and the folded portion 11 has the opposed wall 2. , 2a is freely twistable.
Further, as a modification of the bent portion 3, as shown in FIG. 16, the connecting portion 10 has the same width as the opposing walls 2 and 2a, and gradually becomes narrower as it goes downward (front view). What formed in the shape of an inverted triangle is mentioned.
Since the folded portion 11 at the lower end of the bent portion 3 has a small width, the folded portion 11 is made flexible so that the opposing walls 2 and 2a can be twisted at the folded portion 11 as described above. Become.
[0009]
The spring material 5 is made of spring steel and is made of a U-shaped spring that is long in the vertical direction. Between the left and right end portions of the opposing walls 2 and 2a so that the end portion 5a in the expansion / contraction direction is directed to the left and right outer sides of the wedge body 4. Is intervening.
And the spring stop part 9 provided in the right-and-left side edge of the opposing walls 2 and 2a latches the said edge part 5a of the spring material 5, and the spring material 5 is prevented from protruding to the exterior of the wedge body 4. FIG. .
Further, on the inner surface of the opposing wall 2, a fixing claw 12 protruding by punching is provided at a position corresponding to the lower end of the spring material 5, and the lower end of the spring material 5 is locked by the fixing claw 12. The position of the spring material 5 between the opposing walls 2 and 2a is held by the fixing claws 12 and the spring stoppers 9.
[0010]
The locking means 6 is spaced apart from the upper and lower inner intermediate portions of the opposing walls 2 and 2a of the wedge body 4, and the locking pieces 13 and 14 projecting so as to offset the opposing walls 2 and 2a vertically. The locking pieces 13 and 14 are formed with an unloading piece 15 provided so as to be able to be engaged and disengaged so as to hold or release the polymerization.
In the present embodiment, the opposing wall 2 is provided with two locking pieces 13 and 14 spaced apart from each other in the vertical direction, and one locking piece 13 and 14 interposed between the two locking pieces 13 and 14. Is provided on the opposing wall 2a, but the single locking pieces 13 and 14 may be arranged on the opposing walls 2 and 2a so as to be shifted up and down.
[0011]
Each of the upper locking pieces 13 is composed of a pair of left and right L-shaped projecting pieces 13a and 13b having a lip groove 16 formed in the center, and the L-shaped projecting pieces 13a and 13b are predetermined portions of the opposing walls 2 and 2a. Is formed from the outside to the inside (see FIG. 7).
Each of the lower locking pieces 14 is formed by a loop-shaped protruding piece having a width smaller than that of the lip groove 16, and is formed so as to have a substantially U-shape in a plan view as described above (see FIG. 9).
When the wedge body 4 is deformed into a flat shape, the upper locking piece 13 and the lower locking piece 14 which are superposed so as to be shifted from each other are formed on the same axis with a lip groove 16 and a loop hole (hole) 17. Each is configured to overlap.
[0012]
The detachable piece 15 has a width corresponding to the lip groove 16 of the upper locking piece 13 and has a belt-like plate shape that can be inserted into and removed from the lip groove 16 of the upper locking piece 13 and has an upper end. The upper insertion portion 18 projecting from the wedge body 4 and the width of the lower locking piece 14 corresponding to the loop hole 17 and between the tips of the L-shaped protruding pieces 13a and 13b constituting the upper locking piece 13 A band plate-like lower insertion portion 19 which is formed to be smaller than the gap 13c and is detachably inserted into the loop hole 17 of the overlapped lower locking piece 14 is formed continuously in the vertical direction.
Further, the upper end of the upper insertion portion 18 is formed in a circular shape, and a circular hole 18a is provided at the center thereof.
It is more desirable to set the length of the lower insertion portion 19 of the hanging piece 15 as follows.
That is, the upper and lower insertion portions 18 and 19 are simultaneously detached from the lip groove 16 of the upper locking piece 13 and the loop hole 17 of the lower locking piece 14 held by superposition by inserting the upper and lower insertion portions 18 and 19. Further, the length of the lower insertion portion 19 of the hooking piece 15 is set.
[0013]
Further, a convex stopper 20 is provided on the lower insertion portion 19 of the hooking piece 15 so as to protrude left and right in the width direction.
The stopper 20 is located above the overlapped upper and lower locking pieces 13, 14 in the released state where the upper and lower insertion portions 18, 19 are released, and the upper and lower locking pieces 13, 14 and the upper and lower locking pieces 13 and 14, and the upper and lower insertion portions 18 and 19 are inserted into the overlapped holding state, and the upper lower portion The lower insertion portion 19 is set at an appropriate position so as to be hooked on the locking piece 14.
[0014]
The retaining piece 21 includes a vertical portion 21a that protrudes from the left and right of the opposing walls 2 and 2a of the wedge body 4 and a horizontal portion that is bent in a bowl shape so that the front end of the vertical portion 21a is misaligned between the front and rear. The L-shaped projecting piece 21 is formed by punching a predetermined portion of the opposing walls 2 and 2a from the outside to the inside.
The L-shaped projecting piece 21 is placed in the space 22 in which the inner corner portions 21c of the L-shaped projecting piece 21 are diagonally arranged in the above-described superposition holding state (corresponding to the flat state of the wedge body 4). The insertion part 19 is formed so as to penetrate freely (see FIG. 8).
Further, the horizontal portion 21b of the L-shaped projecting piece 21 sandwiches the lower insertion portion 19 in the state where the polymerization is released, and at this time, the total length 5a of the spring member 5 is the inner surface of the opposing walls 2 and 2a. The distance between the opposing walls 2 and 2a is set so as to be larger than the gap S in the state of being in contact with the above, and the opening width of the opposing walls 2 and 2a in this state is hereinafter referred to as a regulated maximum width.
[0015]
Next, a modified example of the fastener 1 will be described with reference to FIGS. This stopper 1a is a type in which the wedge body 4 is formed thick so as to correspond to a relatively wide gap S. The same or corresponding parts as those of the stopper 1 are denoted by the same reference numerals, and the description will be made. Omitted. The fastener 1a is deformed in the shape of the spring material 5 and the configuration related to the locking means 6.
The spring material 5 is composed of an upward and downward zigzag spring having an odd number of corrugated steps, and the expansion / contraction direction end portion 5a is directed between the left and right end portions of the opposing walls 2 and 2a so as to be directed to the left and right outwards of the wedge body 4. It is intervening.
[0016]
Each of the upper and lower locking pieces 13 and 14 in the locking means 6 protrudes from the opposing walls 2 and 2a one by one.
Each of the upper locking pieces 13 is formed of a tongue-like piece having a protruding hole 23 with a small width at the front end side, and each of the lower locking pieces 14 has the same width as the small hole 23a in the protruding hole 23. The upper and lower locking pieces 13 and 14 are formed by stamping and forming predetermined portions of the opposing walls 2 and 2a from the outside to the inside (FIG. 23, FIG. 23). 24, 26).
Then, the upper locking piece 13 and the lower locking piece 14 which are superposed so as to be shifted from each other in the state where the wedge body 4 is deformed in a flat shape are formed with a wide hole 23b and a rectangular hole in the convex hole 23 on the same axis. Each of 24 is overlapped.
[0017]
The detachable piece 15 is formed by continuously forming an upper insertion portion 18 and a lower insertion portion 19 in the form of strips having different widths as in the case of the stopper 1.
The upper insertion portion 18 protrudes from the wedge body 4 at the upper end, has a width corresponding to the large hole 23b in the convex hole 23 of the upper locking piece 13, and can be inserted into and removed from the overlapped large hole 23b. .
Further, in the superposition holding state in which the upper and lower insertion portions 18 and 19 are inserted into the upper and lower locking pieces 13 and 14 that are overlapped, the upper end of the upper insertion portion 18 of the unloading piece 15 protruding from the wedge body 4 is Positioning means 25 that is continuous with the circular portion provided with the hole 18a and is wider than the wide hole 23b in the convex hole 23 is provided so as to be hooked to the upper locking piece 13 on the upper side.
The lower insertion portion 19 has a width corresponding to the small hole 23a of the upper locking piece 13 and the square hole 24 of the lower locking piece 14, and can be inserted into and removed from the rectangular hole 24 of the overlapped lower locking piece 14. is doing.
Similarly to the stopper 1, the lower insertion portion 19 extends from the wide hole 23 b of the upper locking piece 13 and the rectangular hole 24 of the lower locking piece 14 which are held by overlapping by inserting the upper and lower insertion portions 18 and 19. It is more desirable to set the length so that the upper and lower insertion portions 18 and 19 are separated simultaneously.
The lower insertion portion 19 is provided with a stopper 20 that protrudes in the left and right directions in the width direction, and the stopper 20 is located above and below the overlapped upper and lower locking pieces 13, 14, respectively. The position is set so as to be hooked on a retaining piece 26 which will be described later provided between the upper and lower engaging pieces 13 and 14 of the opposing walls 2 and 2a in the polymerization release state in which 19 is released.
The stopper 20 provided on the stopper 1 is configured to be hooked on the upper lower locking piece 14 in the above-described superposition holding state and on the retaining piece 26 in the above-described superposition release state. Although the positioning means 25 of the metal fitting 1a is also used, the stopper 20 provided on the metal fitting 1a is set so as to be hooked on the retaining piece 26 only in the above-described superposition release state.
[0018]
The retaining piece 26 is formed of a tongue-like piece that has a convex hole 27 with a small width at the tip side and protrudes so as to cross the opposing walls 2 and 2a up and down. A predetermined part of the opposing walls 2 and 2a is formed from the outside to the inside.
Then, the tongue-like piece 26 is configured so as to freely penetrate the lower insertion portion 19 of the detachable piece 15 up and down in the overlapped large hole 27a of the convex hole 27 in the above-described superposition holding state. Further, in the above-described superposition release state, the superposed narrow hole 27b of the convex hole 27 sandwiches the lower insertion portion 19. At this time, the total length 5a of the spring member 5 in the expansion / contraction direction is the opposite walls 2, 2a. The distance between the opposing walls 2 and 2a in contact with the inner surface is set to be larger than the gap S, and the opening width of the opposing walls 2 and 2a in such a state is hereinafter referred to as a regulated maximum width. .
[0019]
The fasteners 1 and 1a are configured as described above, and each member of the fasteners 1 and 1a is subjected to a surface treatment by dacrozide (registered trademark) treatment to prevent rust.
Since the baking temperature is lower than the surface treatment by hot dip galvanization (about 300 degrees), the spring performance of the spring material is not particularly affected.
[0020]
Next, the operation of the fasteners 1 and 1a will be described.
First, in the flattened state of the wedge body 4 in the stopper 1, the hooking piece 15 whose upper end protrudes from the wedge body 4 has a superposed lip groove 16, a space 22 constituted by a retaining piece 21, and a superposed loop hole 17. Is running through.
That is, the upper insertion portion 18 of the detachable piece 15 is located in the overlapped lip groove 16, the lower insertion portion 19 continuous from the upper insertion portion 18 penetrates the space 22, and the stopper 20 is provided on the opposing wall 2. The lower engaging piece 14 is hooked on the upper lower locking piece 14, and the lower end of the lower insertion portion 19 ahead of the stopper 20 is located in the overlapped loop hole 17.
In this way, the upper and lower engaging pieces 13 are located in the lip groove 16 and the loop hole 17 where the upper and lower inserting portions 18 and 19 are overlapped with each other, thereby engaging the upper and lower engaging pieces 13 and 14. 14, the opposing walls 2, 2 a are attracted substantially in parallel against the elastic force of the spring material 5 and the bent portion 3, and the wedge body 4 is held in a flat shape thinner than the gap S. In the flat state of the wedge body 4 in the stopper 1a, the detaching piece 15 whose upper end protrudes from the wedge body 4 passes through the wide holes 23b and 27a and the square holes 24 of the superposed convex holes 23 and 27. Yes.
That is, the upper insertion portion 18 of the hanging piece 15 is positioned in the large-width hole 23b of the convex hole 23 overlapped, and the lower insertion portion 19 continuous from the upper insertion portion 18 is allowed to play in the large-width hole 27a of the convex hole 27 overlapped. The stopper 20 is engaged with the upper lower locking piece 14 provided on the opposing wall 2, and the lower end of the lower insertion portion 19 ahead of the stopper 20 is positioned in the overlapped square hole 24.
In this way, by engaging the upper and lower locking pieces 13 and 14 in the wide hole 23b and the square hole 24 of the convex hole 23 where the upper and lower insertion portions 18 and 19 are overlapped, The opposing walls 2, 2 a are attracted approximately parallel against the elastic force of the spring material 5 and the bent portion 3 through the lower locking pieces 13, 14, and the wedge body 4 is held in a flat shape thinner than the gap S. Yes.
In the flat state of the wedge body 4 in the above-described fasteners 1 and 1a, the spring material 5 existing on the left and right between the opposing walls 2 and 2a is in a state of being compressed and deformed so that the gap between the end portions 5a in the expansion / contraction direction is narrowed. Since the opposing walls 2 and 2a are pressed, the upper fitting portion 18 and the lower insertion portion existing in the overlapped lip groove 16 (wide hole 23b) and loop hole 17 (square hole 24) are formed in the stopper 1 (1a). Each of 19 is firmly pulled to the base end side by the upper locking piece 13 and the lower locking piece 14, and the above-mentioned longitudinal state of the hooking piece 15 is firmly maintained and cannot be easily removed.
Then, the fasteners 1 and 1a are stored and transported in a state where the wedge body 4 is flattened as described above.
[0021]
Then, the attachment of the fasteners 1 and 1a at the work site such as an expressway is performed as follows.
Here, the sound-absorbing panel P is a panel-type case made of metal or plastic in which a number of slits or holes having a predetermined shape are formed on the sound-absorbing surface that is the front surface, and a sound-absorbing material such as rock wool or glass wool is incorporated therein, The upper and lower surfaces of the case of the sound absorbing panel P are inclined surfaces parallel to each other, and in a state where a large number of the sound absorbing panels P are stacked between the columns T and stacked, Is prevented as much as possible.
Further, in the sound absorbing panel P, the left and right side edges arranged in the concave groove D of the support column T have a U-shaped groove P1 recessed over the length, and an eyebolt P2 is implanted in the U-shaped groove P1. In addition, when the left and right side edges of the sound absorbing panel P are arranged in the concave groove D, a drop-preventing wire L is inserted into the ring portion of the eyebolt P2.
Then, on the site, the left and right edges of the sound absorbing panel P are inserted between the opposing concave grooves D of the support columns T that are erected adjacently, and the sound absorbing surface of the sound absorbing panel P is moved to the roadway side within the width of the concave groove D. The wire L is inserted into the wire insertion hole 7 of the support plate 8 in the side-by-side, stop fittings 1, 1 a and the support plate 8 is placed on the upper surfaces of the left and right side edges of the sound absorbing panel P, and the wedge body 4 is placed in the concave groove D. The sound absorbing panel P is disposed in the gap S on the back side.
[0022]
Since the flattened wedge body 4 is set to be thinner than the gap S, the wedge body 4 can be inserted into the gap S without difficulty. In this state, the opposing wall 2 is flush with the back surface of the sound absorbing panel P, The opposing wall 2a and the side wall D1 of the recessed groove D are substantially parallel and spaced apart by a narrow interval of about several millimeters.
Then, by inserting a lever-like jig (not shown) into a circular hole 18a provided at the upper end of the detachable piece 15 (upper insertion 18) protruding from the wedge body 4, the detachable piece 15 is removed. Move up.
When the hanging piece 15 is moved upward, the upper and lower insertion portions 18 and 19 are separated from the overlapped lip groove 16 and loop hole 17 in the stopper 1, and the upper portion of the lower insertion portion 19 is inserted into the lip groove 16. However, since the lower insertion portion 19 is smaller than the gap 13c between the tip portions of the L-shaped projecting pieces 13a and 13b and cannot hold the lip grooves 16 in an overlapping manner, the upper and lower locking pieces 13 and 14 are The state in which the opposing walls 2 and 2a are attracted in a flat shape is released by being locked by the lower insertion portions 18 and 19, and the opposing walls 2 and 2a are expanded by the elastic force of the spring material 5 and the bent portion 3. The sound absorbing panel P and the side wall D1 are pressed.
Since the widening width of the facing walls 2 and 2a is smaller than the maximum regulation width and corresponds to the gap S, the horizontal portion 21b of the retaining piece 21 is not in contact with the lower insertion portion 19, but the wedge It is closer than when the body 4 is flat (see FIGS. 8 and 10).
Further, in the stopper 1a, the upper and lower insertion portions 18, 19 are separated from the inside of the large hole 23b and the square hole 24 of the superposed convex hole 23, and inside the narrow holes 23a, 27b of the superposed convex holes 23, 27. Since the upper and lower portions of the lower insertion portion 19 are positioned on the upper and lower locking pieces 13, 14 are locked by the upper and lower insertion portions 18, 19, so that the opposing walls 2, 2a are pulled flat. The state that has been released is released, and the opposing walls 2 and 2a are expanded by the elastic force of the spring material 5 and the bent portion 3 to press the sound absorbing panel P and the side wall D1.
The widening width of the opposing walls 2 and 2a is smaller than the maximum regulation width and corresponds to the gap S. Therefore, the lower insertion portion 19 is loosened in the narrow holes 23a and 27b of the overlapping convex holes 23 and 27. Although it is penetrated, the play (the gap between the overlapped narrow holes 23a and 27b with the lower insertion portion 19) is narrower than when the wedge body 4 is flat (see FIGS. 25 and 27).
In this state, the elastic material end 5a of the spring member 5 contacts the opposing walls 2 and 2a over its length to urge the opposing walls 2 and 2a in the opening direction, so that the urging force is applied to the opposing wall. It works on the entire outer surface of 2 and 2a, presses the side wall D1 and the sound absorbing panel P, and stably presses and holds the sound absorbing panel P toward the roadway side in the groove D.
Note that once the lower insertion portion 19 is removed from the overlapped loop hole 17 (rectangular hole 24), the opposing walls 2 and 2a are expanded and deformed by the spring material 5 and the like, so the overlapping space of the loop hole 17 (rectangular hole 24) Therefore, the lower insertion portion 19 does not enter the narrow polymerization space.
[0023]
In the sound barrier W standing up corresponding to the curved roadway, the left and right side edges of the sound absorbing panel P curved in a plan view are inserted obliquely into the concave groove D, and the left and right lengths of the gap S in the plan view. However, the opposing walls 2 and 2a also open correspondingly to such a gap S, and the sound absorbing panel P is stably pressed and held toward the roadway side in the groove D.
That is, the folded portion 11 of the bent portion 3 is provided with flexibility so that the opposed walls 2 and 2a can be twisted at the folded portion 11 and independent at the left and right end portions between the opposed walls 2 and 2a. Since the spring material 5 is provided, the left and right sides of the wedge body 4 are widely opened and the other is narrowly opened so as to correspond to the gaps S having different left and right lengths, thereby pressing the side wall D1 and the sound absorbing panel P. To do.
If the gap S is relatively large compared to the opening width of the wedge body 4 of the stoppers 1 and 1a, as shown in FIG. The wedge body 4 is arranged in the gap S together with the auxiliary tool 28, and the urging force of the spring material 5 via the opposing walls 2 and 2a is applied to the side wall D1 and the sound absorbing panel P, so that the sound absorbing panel P is recessed in the groove D. It is possible to stably press and hold the inner roadway side.
[0024]
【The invention's effect】
In short, the present invention provides a clearance S between the back of the left and right side edges of the sound absorbing panel P fitted between the side walls D1 of the concave groove D of the column T made of H-shaped steel and the side wall D1 of the concave groove D facing the rear surface. A stop metal fitting 1 for a soundproof wall to be interposed, and a wedge body 4 is provided by connecting the lower end portions of a pair of opposing walls 2 and 2a with a substantially U-shaped bent portion 3 having elasticity in the opening direction. The spring material 5 biased in the opening direction is interposed between the opposing walls 2 and 2a of the wedge body 4 so that the wedge body 4 is more than the gap S against the elastic force of the spring material 5 and the bent portion 3. Since the locking means 6 is provided by compressing and holding the thin flat shape, and the clasp 1 is formed, the flat wedge member 4 is disposed in the gap S, and then the compression holding state by the locking means 6 is released, so that elasticity is obtained. The sound absorbing panel P is pressed to the roadway side by the elastic force of the returning spring material 5 and the bent portion 3, and the inside of the groove D The sound absorbing panel P can be easily wedged without hitting the wedge body with a hammer as in the prior art, and the work efficiency can be improved. The trouble can be solved.
Further, since the maximum opening width between the connecting portions 10 between the lower ends of the opposing walls 2 and 2a and the bent portion 3 is set larger than the gap S, the maximum opening width of the opposing walls 2 and 2a above the connecting portion 10 is as follows. Since it is wider than the maximum opening width between the connecting parts 10, the compression holding state of the wedge body 4 by the locking means 6 is released, and the opposing walls 2, 2 a are expanded by the urging force of the spring material 5 and the bent portion 3. By doing so, the spring material 5 interposed between the opposing walls 2 and 2a vertically presses the entire outer surface of the opposing walls 2 and 2a in close contact with the back surface of the sound absorbing panel P and the side wall D1 of the groove D. The sound absorbing panel P can be stably pressed and held in the concave groove D with a sufficient pressing force.
[0025]
The bent portion 3 is set to have a width smaller than that of the opposing walls 2 and 2a so that the folded portion 11 is flexible, and the opposing walls 2 and 2a are twisted by the folded portion 11. Since the left and right ends of the opposing walls 2 and 2a can be freely opened, and the independent spring members 5 are disposed between the left and right ends of the opposing walls 2 and 2a, the left and right sides of the sound absorbing panel P can be freely adjusted. Even when a gap S having different left and right lengths in a plan view is generated, such as when the side edge is obliquely inserted into the concave groove D, one of the left and right sides of the wedge body 4 is wide so as to correspond to the irregular gap S. Open, the other opens narrowly, and the outer surfaces of the opposing walls 2 and 2a are brought into close contact with the back surface of the sound absorbing panel P and the side wall D1 of the concave groove D, and the opposing walls 2 and 2a are sufficiently pressed. The back surface of the sound absorbing panel P and the side wall D1 of the groove D can be pressed.
[0026]
The spring material 5 is a U-shaped spring that is long in the vertical direction, or a zigzag spring having an odd number of corrugated steps, and the opposing walls 2 and 2a are oriented so that the end portion 5a of the spring material 5 in the expansion / contraction direction is directed outward. Since it is interposed between the left and right end portions, in the wedge body 4 that is wedged, the end portion 5a in the expansion / contraction direction contacts the opposing walls 2 and 2a over its length and biases the opposing walls 2 and 2a in the opening direction. The biasing force can be applied to the entire outer surface of the opposing walls 2 and 2a to press the side wall D1 and the sound absorbing panel P, and the locking means is provided between the spring members 5 (intermediate part inside the opposing walls 2 and 2a). 6 can be formed.
Moreover, since the spring stop part 9 which latches the expansion-contraction direction edge part 5a of the spring material 5 was provided in the opposing wall 2 and 2a left-right side edge, the spring material 5 is compressed by making the wedge body 4 flat. Even if it is deformed, the spring material 5 does not protrude from the left and right sides of the opposing walls 2 and 2a, and the spring material 5 can be held at a fixed position between the opposing walls 2 and 2a without being fixed by welding or screws. .
Thus, since the spring material 5 is not permanently coupled to the wedge body 4, the spring material 5 can be deformed without any restriction according to each state of the wedge body 4 compressed or released by the lock means 6. .
In addition, the conventional wedge body is formed by bending a thin plate into a predetermined shape to give elasticity to the entire wedge body. The conventional one not made of spring steel is of course weak in pressing force and sufficiently absorbs sound. Although the panel P cannot be pressed and held in the concave groove D, the spring material 5 according to the present invention separates the wedge member 4 from the spring material 5 that is the main element for pressing the sound absorbing panel P. The sound absorbing panel P can be firmly pressed and fixed by the urging force of the spring material 5 made of steel, and this conventional drawback is also eliminated.
Further, since the fixing claw 12 is provided at a position corresponding to the lower end portion of the spring material 5 on the inner surface of the opposing walls 2 and 2a, the spring material 5 is coupled between the opposing walls 2 and 2a in combination with the spring stopper 9. It is held in the fixed position.
[0027]
The locking means 6 is spaced apart from the upper and lower inner intermediate portions of the opposing walls 2 and 2a of the wedge body 4, and the locking pieces 13 and 14 project from the opposing walls 2 and 2a so as to diverge vertically. Since the detachable pieces 15 for holding or releasing the polymerization are detachably provided to the locking pieces 13 and 14, the elastic force of the wedge body 4 (the bent portion 3) acting in the opening direction, Against the elastic force of the spring material 5 acting over the length direction of the expansion / contraction direction end portion 5a, the upper and lower locking pieces 13, 14 are overlapped and held by the detachable piece 15 so that the upper and lower locking pieces 13 and 14 are different from each other. As a result, the opposing walls 2 and 2a are pulled up and down so that the opposing walls 2 and 2a are close to each other in parallel, so that the thin flattening of the wedge body 4 can be firmly held, and the wedge body 4 is compact in a substantially flat plate shape. A large number can be stacked and packed without making the wedge bodies 4 bulky.
[0028]
Each of the upper locking pieces 13 includes a pair of left and right L-shaped projecting pieces 13 a and 13 b having a lip groove 16 at the center, and each of the lower locking pieces 14 has a loop shape smaller than the lip groove 16. The hanging piece 15 has a width corresponding to the lip groove 16 of the upper locking piece 13 and has a strip shape that can be inserted into and removed from the lip groove 16 of the upper locking piece 13 that is overlapped. L-shaped projecting pieces 13a and 13b having an upper end protruding from the wedge body 4 and a width corresponding to the loop hole 17 of the lower locking piece 14 and constituting the upper locking piece 13 The band plate-like lower insertion portion 19 formed to be detachable in the loop hole 17 of the overlapped lower locking piece 14 is formed continuously up and down. By inserting the upper and lower insertion portions 18, 19 of the removal piece 15 into the overlapped lip groove 16 and loop hole 17, the spring The upper and lower locking pieces 13 and 14 are locked to the upper and lower insertion portions 18 and 19 against the elastic force of the material 5 and the bent portion 3, and the opposing walls 2 and 2a are drawn in a flat shape. Can hold.
In this state, the elastic force of the spring member 5 and the bent portion 3 urges the lip groove 16 and the loop hole 17 together with the opposing walls 2 and 2a in the opening direction, so that the upper and lower insertion portions 18 and 19 are superposed. It becomes a state of being sandwiched between the lip groove 16 and the loop hole 17, and can prevent the detachment piece 15 from falling off from the lip groove 16 and the loop hole 17, so that the wedge body 4 is held in the flat state as described above. The flat state is not canceled by vibration generated during transportation of the fastener 1 or the like.
In addition, after the wedge body 4 is inserted into the gap S, the upper end of the upper insertion portion 18 (unhook piece 15) is lifted when the unloading piece 15 is pulled up with a dedicated jig to release the flat state of the wedge body 4. Since it protrudes from the wedge body 4, it is easy to set the jig 15 on the upper end of the piece 15 and workability is good.
When the upper and lower insertion portions 18 and 19 are separated from the overlapped lip groove 16 and loop hole 17 by pulling up the hanging piece 15 by a predetermined length, the upper portion of the lower insertion portion 19 is placed in the lip groove 16. However, since the lower insertion portion 19 is narrower than the gap 13c between the tip portions of the L-shaped projecting pieces 13a and 13b and cannot hold the lip grooves 16 in an overlapping manner, the upper and lower locking pieces 13 and 14 are The state where the opposing walls 2 and 2a are attracted in a flat shape is released by being locked by the lower insertion portions 18 and 19, and the opposing walls 2 and 2a are expanded and deformed by the elastic force of the spring material 5 and the bent portion 3. The wedge body 4 can be easily wedged in the gap S.
[0029]
Each of the upper locking pieces 13 is formed of a tongue-like piece having a protruding hole 23 with a small width at the tip side, and each of the lower locking pieces 14 is a square having the same width as the small hole 23a in the protruding hole 23. It consists of a tongue-shaped protrusion penetrating the hole 24, and the detachable piece 15 has a width corresponding to the wide hole 23b in the convex hole 23 of the upper locking piece 13, and can be inserted into and removed from the overlapped wide hole 23b. And has a width corresponding to the upper insertion portion 18 whose upper end protrudes from the wedge body 4, the small hole 23 a of the upper locking piece 13, and the square hole 24 of the lower locking piece 14. Since the strip-shaped lower insertion portion 19 that can be inserted into and removed from the square hole 24 of the overlapped lower locking piece 14 is formed continuously up and down, the upper and lower insertion portions 18 and 19 of the hanging piece 15 are overlapped. By fitting into the wide hole 23b and the square hole 24 of the convex hole 23, the upper and lower sides against the elastic force of the spring material 5 and the bent portion 3 Drawn to the flat opposing wall 2,2a locking pieces 13 and 14 engaged with the upper and lower plug portions 18 and 19 can hold its state.
In this state, the elastic force of the spring member 5 and the bent portion 3 urges the wide hole 23b and the square hole 24 together with the opposing walls 2 and 2a in the opening direction, so that the upper and lower insertion portions 18 and 19 are superposed. It is in a state of being sandwiched between the wide hole 23b and the square hole 24, and it is possible to prevent the detachment piece 15 from falling off from the large hole 23b and the square hole 24, whereby the wedge body 4 is held in the flat state as described above. The flat state is not canceled by vibration generated during transportation of the fastener 1 or the like.
Moreover, since the upper end of the upper insertion part 18 protrudes from the wedge body 4, it is easy to set the upper end of the piece 15 by detaching the jig in the same manner as described above, and the workability is good.
Then, when the hanging piece 15 is pulled up and the upper and lower insertion portions 18, 19 are separated from the wide hole 23b and the rectangular hole 24 of the superposed convex hole 23, the narrow hole 23a of the superposed convex holes 23, 27, Since the upper and lower parts of the lower insertion part 19 are located in 27b, the upper and lower locking pieces 13, 14 are locked by the upper and lower insertion parts 18, 19 so that the opposing walls 2, 2a are flat. The opposing wall 2, 2 a is expanded and deformed by the elastic force of the spring material 5 and the bent portion 3, and the wedge body 4 can be easily wedged in the gap S.
[0030]
The lower insertion portion 19 of the detachable piece 15 is removed so that the upper and lower insertion portions 18 and 19 are simultaneously detached from the upper and lower locking pieces 13 and 14 held by polymerization by inserting the upper and lower insertion portions 18 and 19. Since the length is set, when the detachable piece 15 is pulled up so that the wedge body 4 is wedged in the gap S, the upper and lower engaging pieces 13 and 14 are superposed and held by the upper and lower insertion portions 18 and 19. The wedge body 4 can be instantly expanded and deformed at a stretch, and the wedge-fastening operation of the sound absorbing panel P by the subsequent wedge body 4 can be performed smoothly.
[0031]
The lower insertion portion 19 of the detachable piece 15 is provided with a convex stopper 20 projecting left and right in the width direction, and the upper and lower insertion portions 18, 19 from the upper and lower locking pieces 13, 14 respectively superimposed. In the released polymerization released state, the retaining pieces 21 and 26 for hooking the stopper 20 are provided between the upper and lower engaging pieces 13 and 14 of the opposing walls 2 and 2a. When it is arranged in the gap S and the hanging piece 15 is pulled up and the wedge body 4 is expanded and deformed, the stopper 20 is hooked on the retaining pieces 21 and 26 so that the hanging piece 15 cannot be lifted any further. By not holding it completely away from the body 4 but holding it between the opposing walls 2 and 2a, it is possible to save time and effort for discarding the detachable piece 15 after the wedge body 4 is expanded and deformed, and even work in an elevated place. It is possible to avoid the danger of accidentally detaching and dropping the strip 15.
[0032]
The stopper 20 is configured to be hooked on the upper lower locking piece 14 in the overlapped holding state in which the upper and lower insertion portions 18, 19 are inserted into the upper and lower locking pieces 13, 14 which are overlapped, or In the superposition holding state in which the upper and lower insertion portions 18 and 19 are inserted into the upper and lower locking pieces 13 and 14, the upper upper portion 18 of the unloading piece 15 protruding from the wedge body 4 has an upper Since the positioning means 25 for hooking on the locking piece 13 is provided, when the wedge body 4 is flattened, the lower insertion portion 19 is not inserted into the lower locking piece 14 that is overlapped more than necessary, and the upper locking that is overlapped The upper insertion portion 18 is made to correspond to the piece 13 and the upper end of the upper insertion portion 18 is easily protruded from the wedge body 4 so that the flattening operation can be performed efficiently.
[0033]
The retaining piece 21 includes a vertical portion 21a that protrudes from the left and right sides of the opposing walls 2 and 2a, and a horizontal portion 21b that is bent and formed in a bowl shape so that the front end of the vertical portion 21a is different from front to back. The L-shaped projecting piece is formed so that the lower insertion portion 19 of the detachable piece 15 penetrates into the space 22 in which the inner corner portion 21c of the L-shaped projecting piece is diagonally arranged in the above-described superposition state. In a state where the polymerization is released, the horizontal portion 21b of the L-shaped projecting piece 21 sandwiches the lower insertion portion 19, or the retaining piece 26 has a protruding hole 27 having a narrow tip end side. In addition, a tongue-shaped piece projecting so as to shift up and down on each of the opposing walls, and in the above-described superposition holding state, a lower insertion part 19 of the above-mentioned detaching piece 15 is inserted into the large wide hole 27a where the convex hole 27 is superposed. In a state where the polymerization is released, the narrow hole 27b where the convex hole 27 overlaps sandwiches the lower insertion portion 19 in the above-described state where the polymerization is released. At this time, the distance between the opposing walls 2 and 2a is larger than the gap S (maximum regulation width) with the total length 5a of the spring material 5 in contact with the inner surfaces of the opposing walls 2 and 2a. If it is within a large range, the wedge body 4 expanded within the gap S can be surely applied to the opposing walls 2 and 2a with the end portion 5a of the spring member 5 extending and contracting in the lengthwise direction. In addition, the side wall D1 and the sound absorbing panel P can be pressed by the entire outer surface of the opposing walls 2 and 2a, and the sound absorbing panel P can be stably pressed and held in the concave groove D with sufficient pressing force, and is detached. Even if the piece 15 is pulled up, the stopper 20 is hooked on the retaining piece 21, and the detachable piece 15 is not completely detached from the wedge body 4, and the same effect as described above is obtained.
[0034]
Since the wire insertion hole 7 is provided at the upper end of one of the opposing walls 2 and 2a in the wedge body 4, and the support plate 8 placed on the upper surface of the sound absorbing panel P is extended, the wire L for preventing fall is provided. Is passed through the wire insertion hole 7 and the support plate 8 is placed on the upper surface of the side edge of the sound absorbing panel P, whereby the wedge body 4 in a flat state is placed in a predetermined position in the gap S on the back surface of the sound absorbing panel P in the groove D. Even when working in an elevated place, the practical effects such as the possibility of accidentally dropping the stopper 1 by the wire L can be avoided.
[Brief description of the drawings]
FIG. 1 is a front view of a fastener.
2 is a rear view of FIG. 1. FIG.
FIG. 3 is a left side view of FIG. 1;
4 is a plan view of FIG. 1. FIG.
FIG. 5 is a bottom view of FIG. 1;
6 is a cross-sectional view taken along the line AA in FIG. 1. FIG.
7 is an enlarged cross-sectional view taken along the line BB in FIG. 1. FIG.
FIG. 8 is an enlarged cross-sectional view taken along the line CC of FIG.
9 is an enlarged cross-sectional view taken along the line DD of FIG.
FIG. 10 is a horizontal sectional view of the fastener in a state where the sound absorbing panel is fixed.
FIG. 11 is a cross-sectional view of the sound absorbing panel before the lock means is released in the fixing process.
FIG. 12 is a cross-sectional view showing a fixed state of the sound absorbing panel after the locking means is released.
13 is a front view of the wedge body in FIG. 12. FIG.
14 is a plan view of the wedge body in FIG. 12. FIG.
FIG. 15 is a cross-sectional view of a soundproof wall.
FIG. 16 is a front view showing a modification of FIG. 1;
FIG. 17 is a horizontal sectional view of a stopper provided with an auxiliary tool.
FIG. 18 is a front view of a fastener having a thick wedge body formed thick.
FIG. 19 is a rear view of FIG. 18;
20 is a left side view of FIG.
FIG. 21 is a plan view of FIG. 18;
22 is a bottom view of FIG. 18. FIG.
23 is a cross-sectional view taken along the line EE of FIG.
24 is an enlarged cross-sectional view taken along the line F-F in FIG. 18;
25 is an enlarged sectional view taken on line GG in FIG. 18;
FIG. 26 is an enlarged cross-sectional view taken along the line HH in FIG.
FIG. 27 is a horizontal cross-sectional view showing a state in which the sound absorbing panel is fixed by a thick metal fitting.
FIG. 28 is a sectional view showing a fixed state of the sound absorbing panel after the locking means is released.
FIG. 29 is a cross-sectional view of a conventional fastener.
[Explanation of symbols]
1, 1a fastener
2, 2a Opposite wall
3 Bent part
4 wedge bodies
5 Spring material
5a Stretch direction end
6 Locking means
7 Wire insertion hole
8 Support plate
9 Spring stopper
10 Connection sites
11 Folded part
12 Claw for fixing
13 Upper locking piece
13a, 13b L-shaped protrusion
13c gap
14 Lower locking piece
15 Hanging piece
16 Lip groove
17 Loop hole
18 Upper insertion part
19 Lower insertion part
20 Stopper
21 retaining piece
21a Vertical section
21b Horizontal part
21c Interior corner
22 space
23 Convex hole
23a Small hole
23b Wide hole
24 square hole
25 Positioning means
26 retaining piece
27 Convex hole
27a Wide hole
27b Small hole
D groove
D1 side wall
P sound absorption panel
S clearance
T prop

Claims

In a sound-proof wall stopper that is interposed in the gap between the back surface of the left and right side edges of the sound absorbing panel fitted between the side walls of the concave groove of the pillar made of H-shaped steel, and the side wall of the concave groove facing the back surface, The clasp has a pair of opposing walls, and a wedge member is formed by connecting each of the lower end portions of the opposing wall with a substantially U-shaped bent portion having elasticity in the opening direction, and between the opposing walls of the wedge body The spring material biased in the opening direction is interposed vertically, and the maximum opening width between the connection portions of the bent portion and the lower end of the opposing wall is set larger than the gap, and the spring material and the bent portion A soundproof wall stopper comprising a lock means for compressing and holding the wedge body in a flat shape thinner than the gap against the elastic force of

The spring material is arranged vertically between the left and right end portions of the opposing wall, and the bent portion gives flexibility to the folded portion by setting the folded portion to be smaller than the opposed wall. The sound-proof wall fastener according to claim 1, wherein the opposing wall can be twisted at the folded portion.

The spring material is a U-shaped spring that is long in the vertical direction, or a zigzag spring with an odd number of corrugated steps, and is interposed between the left and right ends of the opposing wall so that the ends of the spring material in the expansion / contraction direction are directed outward. The soundproof wall stopper according to claim 1 or 2, wherein a spring stopper for locking the end of the spring material is provided on the left and right edges of the opposing wall.

4. The soundproof wall stopper according to claim 1, wherein a fixing claw is provided at a position corresponding to the lower end of the spring material on the inner surface of the opposing wall.

The locking means is spaced apart above and below the inner middle part of the opposing wall of the wedge body, and is provided with a locking piece projecting so as to shift up and down on each of the opposing walls, and holding and superposing these on the locking piece, 5. The sound-proof wall stopper according to claim 1, further comprising an detachable piece that is detachably provided so as to cancel the polymerization.

Each of the upper locking pieces is composed of a pair of left and right L-shaped projecting pieces having a lip groove in the center, and each of the lower locking pieces is formed of a loop-shaped projecting piece having a width smaller than that of the lip groove. The piece has a width corresponding to the lip groove of the upper locking piece, and is formed into a band plate shape that can be inserted into and removed from the lip groove of the upper locking piece that is overlapped, and the upper end protrudes from the wedge body. And a width corresponding to the loop hole of the lower locking piece, and is formed to be smaller than the gap between the tip portions of the L-shaped projecting piece constituting the upper locking piece, and the overlapped lower locking piece 6. The soundproof wall stopper according to claim 5, wherein a band plate-like lower insertion portion which can be inserted into and removed from the loop hole is formed continuously in the vertical direction.

Each of the upper locking pieces is composed of a tongue-shaped piece having a narrow convex hole at the tip side, and each of the lower locking pieces has a rectangular hole having the same width as the small hole in the convex hole. It consists of a tongue-shaped projecting piece, the hanging piece has a width corresponding to the large hole in the convex hole of the upper locking piece, and is formed into a strip plate shape that can be inserted into and removed from the superposed wide hole and has an upper end Has a width corresponding to the upper insertion portion protruding from the wedge body, the small hole of the upper locking piece and the rectangular hole of the lower locking piece, and can be freely inserted into and removed from the square hole of the overlapped lower locking piece. 6. The soundproof wall stopper according to claim 5, wherein a band plate-like lower insertion portion is continuously formed in the vertical direction.

The length of the lower insertion portion of the detachable piece is set so that the upper and lower insertion portions are simultaneously detached from the upper and lower locking pieces held by polymerization by insertion of the upper and lower insertion portions. 6. A soundproof wall stopper according to 6 or 7.

In the lower insertion part of the hanging piece, a convex stopper protruding in the left and right direction in the width direction is provided, and the stopper is released in the polymerization release state in which the upper and lower insertion parts are separated from the upper and lower locking pieces, respectively. The sound-proof wall stopper according to claim 6, 7 or 8, wherein a retaining piece for hooking is provided between the upper and lower engaging pieces of the opposing wall.

The soundproofing device according to claim 9, wherein the stopper is configured to be hooked to the upper lower locking piece in a superposed holding state in which the upper and lower insertion portions are inserted into the upper and lower locking pieces that are overlapped. Wall fasteners.

Positioning means for hooking on the upper upper locking piece at the upper end of the upper insertion portion of the detaching piece protruding from the wedge member in the superposition holding state in which the upper and lower insertion portions are inserted into the upper and lower locking pieces that are overlapped The metal fitting for a soundproof wall according to claim 9, wherein:

The retaining piece is an L-shaped projecting piece composed of a vertical part projecting so as to be shifted on the left and right sides of the opposing wall, and a horizontal part bent and formed in a bowl shape so that the front end of the vertical part is misaligned in front and rear. In the polymerization holding state, the L-shaped projecting piece is formed so that the lower insertion portion of the hanging piece penetrates into the space in which the inner corners of the L-shaped projecting piece are diagonally arranged. The horizontal part of the spring is sandwiched in the lower insertion part, and at this time, the distance between the opposing walls is set to be wider than the above gap with the full length of the spring material in the expansion / contraction direction in contact with the inner surface of the opposing wall. The metal fitting for a soundproof wall according to claim 9, 10, or 11.

The retaining piece is formed by a tongue-shaped piece projecting so as to diverge up and down on each of the opposing walls while penetrating a narrow convex hole on the tip side, and the convex hole is polymerized in the above-described superposition state. The lower insertion part of the above-mentioned hanging piece is loosely penetrated into the large-width hole, and in the above polymerization release state, the overlapping small hole of the convex hole is formed so as to sandwich the lower insertion part. 12. The soundproof wall stopper according to claim 9, 10 or 11, wherein an interval between the opposing walls is set to be wider than the gap in a state in which the length of the end portion in the expansion / contraction direction of the material is in contact with the inner surface of the opposing wall. Hardware.

A wire insertion hole is provided at the upper end of one opposing wall of the wedge body, and a support plate placed on the upper surface of the sound absorbing panel is extended. 5. A soundproof wall fastener according to claim 5, 6, 7, 8, 9, 10, 11, 12 or 13.