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JP3556544B2 - Sound insulation plate fasteners for soundproof walls - Google Patents
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JP3556544B2 - Sound insulation plate fasteners for soundproof walls - Google Patents

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JP3556544B2
JP3556544B2 JP29085699A JP29085699A JP3556544B2 JP 3556544 B2 JP3556544 B2 JP 3556544B2 JP 29085699 A JP29085699 A JP 29085699A JP 29085699 A JP29085699 A JP 29085699A JP 3556544 B2 JP3556544 B2 JP 3556544B2
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insulating plate
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JP2001026911A (en
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忠彦 中西
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新中央工業株式会社
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Description

【０００１】
【発明の属する技術分野】
本発明は、防音壁において遮音板を固定するための板バネ式の遮音板留め金具に関する技術分野に属する。
【０００２】
【従来の技術】
一般に、自動車道路の両側等に設けられる防音壁は、例えば実開平４−５７５１３号公報に示されているように、所定間隔をあけて立設された複数の支柱と、該相隣接する一対の支柱の対向面に形成され、該支柱の長さ方向に延びる断面コ字状溝と、該相対向する断面コ字状溝間に嵌め込まれ、該断面コ字状溝の溝幅よりも厚みが小さく設定された遮音板とを備えている。そして、上記遮音板と断面コ字状溝における一方の側面との隙間（溝幅方向の隙間）には板バネ式の遮音板留め金具が装着され、この留め金具の弾性復元力により遮音板が断面コ字状溝の他方の側面に押圧されて固定されるようになっている。
【０００３】
上記留め金具は、基本的には、略上下方向に延び、上記隙間に装着されたときに、厚み方向の一方の面が上記遮音板の厚み方向における該隙間側の面に当接する第１の縦辺部と、この第１の縦辺部と対向しかつ該第１の縦辺部との水平距離が上側に向かって大きくなるように設けられ、留め金具が上記隙間に装着されたときに、厚み方向における第１の縦辺部と反対側面の上端部が上記断面コ字状溝の一方の側面に当接する第２の縦辺部とを備えている。上記第１及び第２の縦辺部の下端部同士は、例えば上記公報のように連結辺部を介して接続されるか、又は、例えば実開昭６１−５０１０９号公報に示されているように、連結辺部を介さずに直接接続されている。
【０００４】
そして、上記第１及び第２の縦辺部の下端部間の水平距離は、上記隙間よりも小さく設定されている一方、上端部間の水平距離は、上記隙間よりも大きく設定されており、留め金具を上記遮音板と断面コ字状溝との隙間に装着するには、先ず、第１及び第２の縦辺部の下端部をその隙間に挿入しておき、この留め金具を上側からハンマー等で叩くことにより第１及び第２の縦辺部の上端部を互いに近付く方向に撓ませて上記隙間に完全に挿入させる。
【０００５】
【発明が解決しようとする課題】
しかし、上記従来の留め金具の装着方法では、留め金具を重いハンマーで叩いて装着しなければならないため、装着作業に時間がかかると共に、力の弱い作業者に装着作業を行わせることはできないという問題がある。また、装着作業時に大きな音が発生すると共に、留め金具が破損する場合がある。
【０００６】
本発明は斯かる点に鑑みてなされたものであり、その目的とするところは、上記のような防音壁の遮音板留め金具に対して、その構成を改良することによって、留め金具の遮音板と断面コ字状溝との隙間に対する装着を、重いハンマー等を用いないで簡単な作業でスムーズに行えるようにすることにある。
【０００７】
【課題を解決するための手段】
上記の目的を達成するために、請求項１の発明では、第１の縦辺部に、第２の縦辺部の上端部に対して係脱自在な係合部を設け、この係合部と上記第２の縦辺部の上端部とが係合しているときに、第１及び第２の縦辺部の上端部間の水平距離が非係合時よりも小さくなるようにした。
【０００８】
具体的には、この発明では、所定間隔をあけて立設された複数の支柱と、該相隣接する一対の支柱の対向面に形成され、該支柱の長さ方向に延びる断面コ字状溝と、該相対向する断面コ字状溝間に嵌め込まれ、該断面コ字状溝の溝幅よりも厚みが小さく設定された遮音板とを備えた防音壁において、上記遮音板と断面コ字状溝における一方の側面との隙間に装着され、弾性復元力により該遮音板を断面コ字状溝の他方の側面に押圧する板バネ式の遮音板留め金具を対象とする。
【０００９】
そして、略上下方向に延び、上記隙間に装着されたときに、厚み方向の一方の面が上記遮音板の厚み方向における該隙間側の面に当接する第１の縦辺部と、上記第１の縦辺部と対向しかつ該第１の縦辺部との水平距離が上側に向かって大きくなるように略上下方向に延び、下端部が上記第１の縦辺部の下端部に接続され、上記隙間に装着されたときに、厚み方向における第１の縦辺部と反対側面の上端部が上記断面コ字状溝の一方の側面に当接する第２の縦辺部と、上記第１の縦辺部に設けられ、上記第２の縦辺部の上端部に対して係脱自在な係合部とを備え、上記係合部は、基端部が上記第１の縦辺部に接続されかつ該基端部から上側に延びて先端部が第１の縦辺部の厚み方向に撓むことが可能な片持ちはり状の可撓部と、該可撓部の先端部に上記第２の縦辺部側に突出するように形成されかつ第２の縦辺部の上端部に対して上側を覆うように係合する突起部とからなり、上記係合部と第２の縦辺部の上端部とが係合しているときに、上記第１及び第２の縦辺部の上端部間の水平距離が非係合時よりも小さくなるように構成されているものとする。
【００１０】
上記の構成により、係合部と第２の縦辺部の上端部との係合時に、第１及び第２の縦辺部の上端部間の水平距離を、遮音板と断面コ字状溝における一方の側面との隙間量と略同じになるようにするか又はその隙間量よりも小さくなるようにすることができる。この結果、作業者は、予め係合部と第２の縦辺部の上端部とを係合した留め金具をその隙間に挿入して上記係合を解除するだけで済み、力の弱い作業者であっても留め金具を簡単な作業で容易にかつスムーズに装着することができると共に、その装着作業時に大きな音が発生したり、留め金具が壊れたりするのを防止することができる。そして、係合部が可撓部と突起部とからなることで、簡単な構成で係合部を形成することができる。また、係合部を第１の縦辺部に一体形成することができ、低コストで係合部を形成することができる。
【００１１】
請求項２の発明では、請求項１の発明において、２つの突起部が、第１の縦辺部の幅方向に所定間隔をあけて設けられ、上記両突起部間における可撓部の先端部に、略上下方向に延びる延設部が形成されているものとする。
【００１２】
このことで、延設部をガイドにして該延設部と第２の縦辺部との間にドライバー等の工具を差し込むことができ、該工具を差し込んだ状態で回したりこじたりすることにより、係合部と第２の縦辺部との係合を容易に解除することができる。
【００１３】
請求項３の発明では、請求項１の発明において、可撓部の上下方向中間部に、第１の縦辺部の厚み方向における第２の縦辺部と反対側面に対して第２の縦辺部と反対側に突出した状態で湾曲してなる湾曲部が形成され、係合部と上記第２の縦辺部の上端部とが係合しているときに、該第２の縦辺部の上端部と上記湾曲部との間の水平距離が、遮音板と断面コ字状溝における一方の側面との隙間量よりも大きく設定されているものとする。
【００１４】
こうすることで、予め係合部と第２の縦辺部の上端部とを係合した留め金具を、遮音板と断面コ字状溝における一方の側面との隙間に挿入して装着する途中で、可撓部の湾曲部が遮音板に当接すると共に、第２の縦辺部の上端部が断面コ字状溝の一方の側面に当接する。この当接状態で留め金具を挿入方向にさらに押し込むと、その湾曲部の湾曲度合いが徐々に小さくなり、この結果、可撓部の先端部の突起部が上側でかつ第２の縦辺部と反対側へ徐々に移動して、やがて係合部と第２の縦辺部の上端部との係合が解除される。したがって、留め金具の所定位置へのセット完了と略同時に、上記係合が解除された状態にすることができ、留め金具の装着がより一層容易になる。
【００１５】
請求項４の発明では、所定間隔をあけて立設された複数の支柱と、該相隣接する一対の支柱の対向面に形成され、該支柱の長さ方向に延びる断面コ字状溝と、該相対向する断面コ字状溝間に嵌め込まれ、該断面コ字状溝の溝幅よりも厚みが小さく設定された遮音板とを備えた防音壁において、上記遮音板と断面コ字状溝における一方の側面との隙間に装着され、弾性復元力により該遮音板を断面コ字状溝の他方の側面に押圧する板バネ式の遮音板留め金具を対象とする。
【００１６】
そして、略上下方向に延び、上記隙間に装着されたときに、厚み方向の一方の面が上記遮音板の厚み方向における該隙間側の面に当接する第１の縦辺部と、上記第１の縦辺部と対向しかつ該第１の縦辺部との水平距離が上側に向かって大きくなるように略上下方向に延び、上記隙間に装着されたときに、厚み方向における第１の縦辺部と反対側面の上端部が上記断面コ字状溝の一方の側面に当接する第２の縦辺部と、両端部が上記第１及び第２の縦辺部の下端部にそれぞれ接続され、該両端部間の長さが上記隙間よりも小さく設定された連結辺部と、上記第２の縦辺部の上端部に接続され、該上端部から上記第１の縦辺部側に向かって延び、一部に係合用孔又は係合用切欠きを有する上辺部と、上記上辺部の第１の縦辺部側端部に接続され、該端部から上記第２の縦辺部側でかつ下側に向かって延びる下辺部と、上記第２の縦辺部に設けられ、上記上辺部の係合用孔又は係合用切欠きに対して係脱自在な係合部とを備え、上記係合部と上辺部の係合用孔又は係合用切欠きとが係合しているときに、該上辺部の第１の縦辺部側端部と第２の縦辺部との間における該第２の縦辺部の厚み方向に沿った距離が非係合時よりも小さくなるように構成されているものとする。
【００１７】
この発明により、係合部と上辺部の係合用孔又は係合用切欠きとの係合時に、第１及び第２の縦辺部の上端部を互いに近付くように撓ませて、上辺部の第１の縦辺部側端部を第１の縦辺部に当接させたときに、上記第１及び第２の縦辺部における上端部間の水平距離が遮音板と断面コ字状溝における一方の側面との隙間量と略同じになるようにするか又はその隙間量よりも小さくなるようにすることができる。このとき、第１及び第２の縦辺部の上端部の弾性復元力は、上辺部の第１の縦辺部側端部が第１の縦辺部に当接するまでは比較的小さくすることができるので、第１及び第２の縦辺部の上端部を小さい力で撓ませながら、遮音板と断面コ字状溝における一方の側面との隙間に容易に挿入することができる。この結果、請求項１の発明と同様に、作業者は、予め係合部と上辺部の係合用孔又は係合用切欠きとを係合した留め金具を上記隙間に挿入して上記係合を解除するだけでよい。そして、係合を解除した後に、第１及び第２の縦辺部だけでなく上辺部及び下辺部の弾性復元力も遮音板を断面コ字状溝の側面に押圧するように作用させれば、十分な押圧力が得られる。
【００１８】
請求項５の発明では、請求項４の発明において、係合部は、基端部が第２の縦辺部に接続されかつ該基端部から上側に延びて先端部が第２の縦辺部の厚み方向に撓むことが可能な片持ちはり状の可撓部と、該可撓部の先端部に第１の縦辺部と反対側に突出するように形成されかつ上辺部の係合用孔又は係合用切欠きの第２の縦辺部側縁部と係合する突起部とからなるものとする。こうすることで、簡単な構成で低コストで係合部を形成することができる。
【００１９】
請求項６の発明では、請求項５の発明において、２つの突起部が、第２の縦辺部の幅方向に所定間隔をあけて設けられ、上記両突起部間における可撓部の先端部に、略上下方向に延びる延設部が形成されているものとする。このことにより、請求項２の発明と同様の作用効果を得ることができる。
【００２０】
請求項７の発明では、請求項４の発明において、係合部は、基端部が第２の縦辺部に接続されかつ該基端部から上側に延びて先端部が第２の縦辺部の厚み方向に撓むことが可能な片持ちはり状の可撓部と、該可撓部の先端部に第２の縦辺部の幅方向に突出するように形成され、上辺部の係合用孔又は係合用切欠きの該突出方向に対応する側の縁部と係合する突起部とからなるものとする。このことで、簡単な構成で低コストで係合部を形成することができる。
【００２１】
請求項８の発明では、所定間隔をあけて立設された複数の支柱と、該相隣接する一対の支柱の対向面に形成され、該支柱の長さ方向に延びる断面コ字状溝と、該相対向する断面コ字状溝間に嵌め込まれ、該断面コ字状溝の溝幅よりも厚みが小さく設定された遮音板とを備えた防音壁において、上記遮音板と断面コ字状溝における一方の側面との隙間に装着され、弾性復元力により該遮音板を断面コ字状溝の他方の側面に押圧する板バネ式の遮音板留め金具を対象とする。
【００２２】
そして、略上下方向に延び、厚み方向の一方の面が上記遮音板の厚み方向における上記隙間側の面に当接する第１の縦辺部と、上記第１の縦辺部と対向しかつ該第１の縦辺部との水平距離が上側に向かって大きくなるように略上下方向に延び、上記隙間に装着されたときに、厚み方向における第１の縦辺部と反対側面の上端部が上記断面コ字状溝の一方の側面に当接する第２の縦辺部と、両端部が上記第１及び第２の縦辺部の下端部にそれぞれ接続され、該両端部間の長さが上記隙間よりも小さく設定された連結辺部と、上記第２の縦辺部の上端部に接続され、該上端部から上記第１の縦辺部側に向かって延びる上辺部と、上記上辺部の第１の縦辺部側端部に接続され、該端部から上記第２の縦辺部側でかつ下側に向かって延びる下辺部と、上記連結辺部に設けられ、上記下辺部の第２の縦辺部側端部に対して係脱自在な係合部とを備え、上記係合部と下辺部の第２の縦辺部側端部とが係合しているときに、上記上辺部の第１の縦辺部側端部と第２の縦辺部との間における該第２の縦辺部の厚み方向に沿った距離が非係合時よりも小さくなるように構成されているものとする。
【００２３】
このことにより、請求項４の発明と同様に、第１及び第２の縦辺部の上端部を、その間の水平距離が遮音板と断面コ字状溝における一方の側面との隙間量と同じレベルか又は少し小さくなるように比較的小さい力で撓ませることができ、留め金具の装着作業が容易となる。
【００２４】
請求項９の発明では、所定間隔をあけて立設された複数の支柱と、該相隣接する一対の支柱の対向面に形成され、該支柱の長さ方向に延びる断面コ字状溝と、該相対向する断面コ字状溝間に嵌め込まれ、該断面コ字状溝の溝幅よりも厚みが小さく設定された遮音板とを備えた防音壁において、上記遮音板と断面コ字状溝における一方の側面との隙間に装着され、弾性復元力により該遮音板を断面コ字状溝の他方の側面に押圧する板バネ式の遮音板留め金具を対象とする。
【００２５】
そして、略上下方向に延び、上記隙間に装着されたときに、厚み方向の一方の面が上記遮音板の厚み方向における該隙間側の面に当接する第１の縦辺部と、上記第１の縦辺部と対向しかつ該第１の縦辺部との水平距離が上側に向かって大きくなるように略上下方向に延び、下端部が上記第１の縦辺部の下端部に接続され、上記隙間に装着されたときに、厚み方向における第１の縦辺部と反対側面の上端部が上記断面コ字状溝の一方の側面に当接する第２の縦辺部と、上記第１の縦辺部と第２の縦辺部とを係合する係合手段とを備え、上記係合手段は、上記第１及び第２の縦辺部のいずれか一方に形成された片持ちはり状の可撓部と、他方に形成されかつ該可撓部と係合する係合受部とからなり、上記係合手段により第１及び第２の縦辺部同士が係合されているときに、該第１及び第２の縦辺部の上端部間の水平距離が非係合時よりも小さくなるように構成されているものとする。このことで、請求項１の発明と同様の作用効果が得られる。
【００２６】
請求項１０の発明では、請求項９の発明において、防音壁の遮音板留め金具は、遮音板と断面コ字状溝における一方の側面との隙間への装着完了と略同時に、係合手段による第１の縦辺部と第２の縦辺部との係合が解除されるように構成されているものとする。このことで、請求項３の発明と略同様の作用効果が得られる。
【００２７】
【発明の実施の形態】
（実施形態１）
図１及び図２は、本発明の実施形態１に係る遮音板留め金具１０が設けられた防音壁１を示し、この防音壁１は、自動車道路の両側において該自動車道路に沿った方向（図１の紙面に垂直な方向）に所定間隔をあけて立設された多数の支柱２，２，…を備えている。この各支柱２の上部は、自動車道路側に向けて円弧状に湾曲されている。上記各支柱２は、Ｈ形鋼からなっていて、該支柱２の長さ方向に延びる２つの断面コ字状溝３，３を有し、この各断面コ字状溝３の開口が自動車道路に沿った方向（防音壁１の長さ方向）を向くように立設されている。すなわち、各断面コ字状溝３は、相隣接する一対の支柱２，２の対向面に形成されていることになる。
【００２８】
上記一対の支柱２，２の対向面における相対向する断面コ字状溝３，３間には、自動車道路に沿った方向に延びる複数の遮音板４，４，…が上下方向に積み重ねられた状態で嵌め込まれている。この各遮音板４は、ポリカーボネート等のプラスチック製や、鉄及びアルミニウムからなるボックスタイプ製であり、その厚みｔは上記断面コ字状溝３の溝幅Ｗよりも小さく設定されている。尚、図１及び図２中、５は、各支柱２の自動車道路と反対側面に貼付固定された金属製の外装板である。
【００２９】
上記各遮音板４と各断面コ字状溝３における自動車道路と反対側の側面との隙間（隙間量Ｓ＝Ｗ−ｔ）には、弾性復元力により該遮音板４を断面コ字状溝３の自動車道路側の側面に押圧しかつばね鋼鋼材等からなる板バネ式の遮音板留め金具１０が装着されている。この留め金具１０は、上記各遮音板４の長さ方向両端部の上端部に設けられていて、遮音板４の厚み方向における自動車道路と反対側面（上記隙間側面）の上端部を自動車道路側に押圧するように構成されている。尚、上記各遮音板４の上端部における自動車道路側部には、下側に凹む段差部４ａが形成され、この段差部４ａと断面コ字状溝３の自動車道路側の側面との間には、この遮音板４の直ぐ上側に積み重ねられる遮音板４の下端部に設けた凸部４ｂが挿入されるようになっており、このことで、遮音板４の下端部の厚み方向への移動が規制されるようになっている。
【００３０】
上記留め金具１０は、具体的には、図３及び図４に示すように、該留め金具１０が上記隙間に装着されたときに、下面が上記遮音板４の上端面に当接しかつ該上端面に突設された断面円形の嵌合部４ｃ（図６参照）と略嵌合する嵌合孔１１ａを有する取付辺部１１を備えている。この取付辺部１１の自動車道路と反対側端部には、略上下方向に延びる第１の縦辺部１２の上端部が接続されている。この第１の縦辺部１２の厚み方向における自動車道路側面は、留め金具１０が上記隙間に装着されたときに、略全体的に上記遮音板４の厚み方向における上記隙間側面に当接するようになっている。上記第１の縦辺部１２の下端部には、該第１の縦辺部１２と対向しかつ第１の縦辺部１２との水平距離が上側に向かって大きくなるように略上下方向に延びる第２の縦辺部１３の下端部が接続されている。この第２の縦辺部１３の厚み方向における上記第１の縦辺部１２と反対側面（自動車道路と反対側面）の上端部は、留め金具１０が上記隙間に装着されたときに、上記断面コ字状溝３の自動車道路と反対側の側面に当接するようになっている。上記第２の縦辺部１３の上端部には、該上端部から上記第１の縦辺部１２側でかつ下側に延びる斜辺部１４が接続されている。この斜辺部１４の第１の縦辺部１２側端部は、留め金具１０が上記隙間に装着されたときに、第１の縦辺部１２の上下方向略中央部に当接するようになっている。尚、上記斜辺部１４の第１の縦辺部１２側端部（下端部）は、略直角に曲げられて第２の縦辺部１３側に僅かに突出している。
【００３１】
上記第１の縦辺部１２の幅方向略中央部には、上記斜辺部１４ないし第２の縦辺部１３の上端部（斜辺部１４と第２の縦辺部１３との接続部）に対して係脱自在な係合部２０が設けられている。この係合部２０は、基端部が第１の縦辺部１２に接続されかつ該基端部から上側（第２の縦辺部１３側に僅かに傾斜している）に延びて先端部が第１の縦辺部１２の厚み方向に撓むことが可能な片持ちはり状の可撓部２１と、該可撓部２１の先端部に第２の縦辺部１３側に突出するように形成されかつ第２の縦辺部１３の上端部に対して上側を覆うように係合する２つの突起部２２，２２とからなっている（係合状態は、図４の二点鎖線又は図５を参照）。この各突起部２２の下面は、上記斜辺部１４ないし第２の縦辺部１３の上端部に沿う円弧状をなしている。したがって、上記斜辺部１４ないし第２の縦辺部１３の上端部は、上記係合部２０における可撓部２１の各突起部２２と係合する係合受部を構成し、この係合受部と係合部２０とは、第１の縦辺部１２と第２の縦辺部１３とを係合する係合手段を構成している。尚、上記係合部２０の可撓部２１及び各突起部２２は、略コ字状のスリットによって一辺部を除いて周囲から切り離すことで第１の縦辺部１２と一体形成されている。
【００３２】
上記係合部２０の両突起部２２，２２は、上記第１の縦辺部１２の幅方向（可撓部２１の幅方向）に所定間隔をあけて設けられ、この両突起部２２，２２間における上記可撓部２１の先端部には、略上下方向（可撓部２１が延びる方向）に延びかつ上端部が該両突起部２２，２２よりも僅かに上側に位置する延設部２３が形成されている。
【００３３】
そして、上記第１及び第２の縦辺部１２，１３の上端部間の水平距離（対向面とは反対側面間の水平距離）は、上記係合部２０の各突起部２２と上記斜辺部１４ないし第２の縦辺部１３の上端部とが係合していないときには、遮音板４と断面コ字状溝３における自動車道路と反対側の側面との隙間量Ｓよりも大きいＬ１に設定されている一方、係合しているときには、非係合時のＬ１よりも小さくかつ上記隙間量Ｓよりも小さいＬ２に設定されている。尚、上記第１及び第２の縦辺部１２，１３の上端部間の水平距離が、係合時に上記隙間量Ｓと同じか又は少し大きくても、後述の如く遮音板留め金具１０を軽い力で所定位置に装着できればそれでもよい。
【００３４】
以上のように構成された遮音板留め金具１０を遮音板４と断面コ字状溝３の自動車道路と反対側の側面との隙間に装着して該遮音板４を固定する方法を説明する。尚、留め金具１０を装着する段階では、外装板５は各支柱２に貼付固定されてはいない。
【００３５】
先ず、予め留め金具１０の第２の縦辺部１３を第１の縦辺部１２側に撓ませることにより、係合部２０の各突起部２２と斜辺部１４ないし第２の縦辺部１３の上端部とを係合させておく。この係合は、留め金具１０の製造時に製造装置により行ってもよく、装着作業者が工具を用いて行ってもよい。そして、この状態を保持したまま、図６に示すように、留め金具１０の第１及び第２の縦辺部１２，１３を、上記隙間に挿入しながら、取付辺部１１の嵌合孔１１ａを、相対向する断面コ字状溝３，３間に嵌め込んだ遮音板４の上端面の嵌合部４ｃに嵌合させてセットする。このとき、第１及び第２の縦辺部１２，１３の上端部間の水平距離Ｌ２が、上記隙間量Ｓよりも小さいので、第１及び第２の縦辺部１２，１３の下端部から上端部に至るまでの全体を、上記隙間内に容易に挿入することができる。すなわち、従来のように係合部２０がない状態では、第１及び第２の縦辺部１２，１３の上端部を上記隙間内に挿入するには、上側からハンマー等により叩いて無理矢理挿入する必要があったが、このような作業は全く行わなくてもよい。
【００３６】
次いで、図７に示すように、上記係合部２０の延設部２３と斜辺部１４ないし第２の縦辺部１３の上端部との間に、先端部が楔状に形成されたドライバー等の工具５０を、上側でかつ断面コ字状溝３の開口側から差し込んで回したりこじたりすることにより、係合部２０の各突起部２２と斜辺部１４ないし第２の縦辺部１３の上端部との係合を解除する。このとき、延設部２３がなければ、工具５０を各突起部２２と斜辺部１４ないし第２の縦辺部１３の上端部との間に差し込んで上記係合を解除することになるが、延設部２３を設けたことにより、延設部２３がない場合よりも工具５０が差し込み易くなって係合解除を容易に行うことができる。
【００３７】
上述の如く係合部２０の各突起部２２と斜辺部１４ないし第２の縦辺部１３の上端部との係合を解除すると、第２の縦辺部１３における自動車道路と反対側面の上端部が断面コ字状溝３の自動車道路と反対側の側面に当接する一方、第１の縦辺部１２の自動車道路側面の略全体が遮音板４の自動車道路と反対側面に当接し、このことで、遮音板４が断面コ字状溝３の自動車道路側の側面に押圧されて固定され、留め金具１０の装着が完了する（図８参照）。
【００３８】
したがって、上記実施形態では、係合部２０の各突起部２２と斜辺部１４ないし第２の縦辺部１３の上端部とが係合しているときに、第１及び第２の縦辺部１２，１３の上端部間の水平距離Ｌ２が非係合時のＬ１よりも小さくかつ遮音板４と断面コ字状溝３における自動車道路と反対側の側面との隙間量Ｓと同じレベルか又はその隙間量Ｓよりも小さくなるように構成されているので、予め係合部２０の各突起部２２と斜辺部１４ないし第２の縦辺部１３の上端部とを係合しておけば、留め金具１０をハンマー等を用いて無理矢理挿入することなく容易に上記隙間に挿入することができ、しかも、その挿入後に上記係合の解除も容易に行える。よって、力の弱い作業者であっても留め金具１０を簡単な作業で容易に装着することができると共に、その装着作業時に大きな音が発生したり、留め金具１０が壊れたりするのを防止することができる。
【００３９】
尚、上記実施形態１では、係合部２０の可撓部２１の先端部に２つの突起部２２，２２を設け、この両突起部２２，２２間に延設部２３を形成したが、この延設部２３は必ずしも必要ではなく、図９に示すように、可撓部２１の幅方向全体に亘って１つの突起部２２を設けるようにしてもよい。また、図１０に示すように、２つの係合部２０，２０を第１の縦辺部１３の幅方向両側部にそれぞれ設けるようにしてもよい。
【００４０】
さらに、図１１に示すように、係合部２０を、略Ｔ字状のスリットによって周囲から切り離すことで第１の縦辺部１２と一体形成するようにしてもよい。この場合、可撓部２１の先端部において第１の縦辺部１２の幅方向に突出した部分を略直角に曲げれば、２つの突起部２２，２２を形成することができると共に、該両突起部２２，２２間に延設部２３を形成することができる。また、この延設部２３の上端部位置を、各突起部２２よりも高くなるようにすることもできる。
【００４１】
さらにまた、図１２に示すように、可撓部２１の先端部の両側部に切り込みを入れてその上側部分を略直角に曲げることで突起部２２，２２を形成するようにしてもよい。この図１１及び図１２のもののように、可撓部２１の両側部を内側に略直角に曲げることで突起部２２，２２を形成した場合には、第２の縦辺部１３の上端部との係合を確実に保持することができる。
【００４２】
加えて、係合部２０の可撓部２１は、第２の縦辺部１３側に傾ける必要はなく、基端部から略真上に延びるようにしてもよく、係合部２０を、第１の縦辺部１２とは別部材で構成してもよい。また、係合部２０を第１の縦辺部１２に設けかつこの係合部２０と係合する係合受部を第２の縦辺部１３に設ける必要はなく、逆に、係合部２０を第２の縦辺部１３に設け、係合受部を第１の縦辺部１２に設けるようにしてもよい。
【００４３】
さらに、取付辺部１１及び斜辺部１４は必ずしも必要ではない。つまり、遮音板４を押圧するのに十分な弾性復元力が得られれば、斜辺部１４はなくてもよく、留め金具１０の装着時に、第１の縦辺部１２の自動車道路側面を遮音板４の自動車道路と反対側面に貼り付ける等すれば、取付辺部１１はなくてもよい。
【００４４】
また、上記実施形態１では、係合部２０の各突起部２２と斜辺部１４ないし第２の縦辺部１３の上端部とが係合しているときに、第１及び第２の縦辺部１２，１３の上端部間の水平距離Ｌ２を、非係合時のＬ１よりも小さくかつ遮音板４と断面コ字状溝３における自動車道路と反対側の側面との隙間量Ｓよりも小さくなるようにすることが望ましいが、上記水平距離Ｌ２が上記隙間量Ｓ以上であっても、非係合時のＬ１よりも小さければ、第１及び第２の縦辺部１２，１３の上端部を上記隙間に挿入する作業は、非係合時よりもかなり容易になる。
【００４５】
（実施形態２）
図１３及び図１４は、本発明の実施形態２を示し（尚、図３及び図４と同じ部分については同じ符号を付してその詳細な説明は省略する）、留め金具１０の基本形状を上記実施形態１とは異ならせたものである。
【００４６】
すなわち、この実施形態２では、第１及び第２の縦辺部１２，１３の下端部が、略水平方向に延びる連結辺部１６の両端部にそれぞれ接続され、この連結辺部１６の両端部間の長さは遮音板４と断面コ字状溝３における自動車道路と反対側の側面との隙間量Ｓよりも小さく設定されている。また、第２の縦辺部１３の上端部には、該上端部から第１の縦辺部１２側でかつ下側に向かって延び、留め金具１０が上記隙間に装着されたときに、第１の縦辺部１２側端部が第１の縦辺部１２に当接する上辺部１７が接続されている。この上辺部１７の長さ方向及び幅方向の略中央部には、後述の係合部３０の各突起部３２が通過可能でかつ該係合部３０と係合する略矩形状の係合用孔３６が形成されている。上記上辺部１７の第１の縦辺部１２側端部には、該端部から上記第２の縦辺部１３側でかつ下側に向かって延び、留め金具１０が上記隙間に装着されたときに、第２の縦辺部１３側端部が第２の縦辺部１３に当接する下辺部１８が接続されている。この下辺部１８の第２の縦辺部１３側端部（下端部）は、略直角に曲げられて第１の縦辺部１２側に僅かに突出している。
【００４７】
上記第２の縦辺部１３の幅方向中央部には、上記上辺部１７の係合用孔３６に対して係脱自在な係合部３０が設けられている。この係合部３０は、基端部が第２の縦辺部１３に接続されかつ該基端部から上側（第１の縦辺部１２側に傾斜している）に延びて先端部が第２の縦辺部１３の厚み方向に撓むことが可能な片持ちはり状の可撓部３１と、該可撓部３１の先端部に第１の縦辺部１３と反対側（第２の縦辺部１３側）に突出するように形成されかつ上辺部１７の係合用孔３６における第２の縦辺部１３側縁部と係合する２つの突起部３２，３２とからなり、この両突起部３２，３２は、上記実施形態１における係合部２０と同様に、第２の縦辺部１３の幅方向（可撓部３１の幅方向）に所定間隔をあけて設けられ、この両突起部３２，３２間における上記可撓部３１の先端部には、略上下方向（可撓部３１が延びる方向）に延びる延設部３３が形成されている。
【００４８】
尚、上記係合部３０の各突起部３２と上辺部１７の係合用孔３６とが係合しているときには、図１４に二点鎖線で示すように、上辺部１７の第１の縦辺部１２側端部は、下側でかつ第２の縦辺部１３側に移動し、下辺部１８の下端部は第２の縦辺部１３と連結辺部１６との接続部に略当接しており、係合部３０の可撓部３１の先端部は、第１の縦辺部１２側に撓んでいる。
【００４９】
そして、上辺部１７の第１の縦辺部１２側端部と第２の縦辺部１３との間における該第２の縦辺部１３の厚み方向に沿った距離は、係合部３０と上辺部１７の係合用孔３６とが係合していないときにはＨ１に設定されている一方、係合時には、非係合時のＨ１よりも小さいＨ２になるように構成されている。そして、第１及び第２の縦辺部１２，１３の上端部を互いに近付くように撓ませて、上辺部１７の第１の縦辺部１２側端部を第１の縦辺部１２に当接させたときに、第１及び第２の縦辺部１２，１３の上端部間の水平距離（対向面とは反対側面間の水平距離）が、係合部３０と上辺部１７の係合用孔３６との非係合時には上記隙間量Ｓよりも大きい一方、係合時には非係合時よりも小さくかつ上記隙間量Ｓよりも小さくなるようになっている。尚、第１及び第２の縦辺部１２，１３の上端部を互いに近付くように撓ませる際、該第１及び第２の縦辺部１２，１３の弾性復元力は、上辺部１７の第１の縦辺部１２側端部が第１の縦辺部１２に当接するまでは比較的小さい。
【００５０】
上記留め金具１０を遮音板４と断面コ字状溝３の自動車道路と反対側の側面との隙間に装着するには、先ず、予め上辺部１７の第１の縦辺部１２側端部を下側に撓ませると共に、係合部３０の可撓部３１の先端部を第１の縦辺部１２側に撓ませて、各突起部３２を係合用孔３６の第２の縦辺部１３側縁部に係合させておく。
【００５１】
そして、第１及び第２の縦辺部１２，１３の上端部を互いに近付くように撓ませながら、上記実施形態１と同様に、取付辺部１１の嵌合孔１１ａを遮音板４の上端面の嵌合部４ｃに嵌合させる。このとき、第１及び第２の縦辺部１２，１３の弾性復元力はかなり小さいので、ハンマー等を用いて無理矢理挿入しなくても第１及び第２の縦辺部１２，１３の下端部から上端部に至るまでの全体を、上記隙間内に容易に挿入することができる。
【００５２】
次いで、上記実施形態１と同様に、延設部３３と係合用孔３６の第２の縦辺部１３側縁部との間に上記工具５０を挿入することで上記係合を解除する。すると、第２の縦辺部１３における自動車道路と反対側面の上端部が断面コ字状溝３の自動車道路と反対側の側面に当接する一方、第１の縦辺部１２の自動車道路側面の略全体が遮音板４の自動車道路と反対側面に当接し、さらに、上辺部１７の第１の縦辺部１２側端部が第１の縦辺部１２に当接しかつ下辺部１８の第２の縦辺部１３側端部が第２の縦辺部１３に当接する（図１５参照）ので、遮音板４を断面コ字状溝３の自動車道路側の側面に十分な力で押圧することができる。
【００５３】
したがって、上記実施形態２においても、上記実施形態１と同様に、留め金具１０の装着作業を容易に行うことができる。
【００５４】
尚、上記実施形態２では、係合部３０の可撓部３１の先端部に２つの突起部３２，３２を設け、この両突起部３２，３２間に延設部３３を形成したが、この延設部３３は必ずしも必要ではなく、図１６に示すように、可撓部２１の幅方向全体に亘って１つの突起部３２を設けるようにしてもよい。また、図１７に示すように、２つの係合部３０，３０を第２の縦辺部１３の幅方向両側部にそれぞれ設けるようにしてもよい。この場合、係合用孔３６の代わりに、上辺部１７の幅方向両側部に係合用切欠き３７を設ければよい。
【００５５】
さらに、図１８に示すように、係合部３０を、略Ｔ字状のスリットによって周囲から切り離すことで第２の縦辺部１３と一体形成するようにしてもよい。この場合、可撓部３１の先端部において第２の縦辺部１３の幅方向に突出した部分を略直角に曲げれば、２つの突起部３２，３２を形成することができると共に、該両突起部３２，３２間に延設部３３を形成することができる。
【００５６】
さらにまた、図１９に示すように、２つの突起部３２，３２を可撓部３１の先端部に第２の縦辺部１３の幅方向両側に突出するように形成してもよい。この場合、上辺部１７の係合用孔３６における第１の縦辺部１２側に、上記係合部３０の両突起部３２，３３を含む先端部が通過可能な通過用孔３８を形成し、両突起部３２，３２をこの通過用孔３８の下側から上側に通過させて、係合用孔３６における上記各突起部３２の突出方向に対応する側の縁部（上辺部１７の幅方向両端側縁部）に係合させるようにすればよい。そして、このように突起部３２を第２の縦辺部１３の幅方向に突出させる場合、２つの係合部３０，３０を第２の縦辺部１３の幅方向両側部にそれぞれ形成したときには、図２０に示すように、その突起部３２は各係合部３０の可撓部３１の先端部に互いに対向する方向に突出するように形成すると共に、上辺部１７の各係合用切欠き３７における第１の縦辺部１２側に、各係合部３０の突起部３２が通過可能な通過用切欠き３９を形成すればよい。
【００５７】
さらに、上記実施形態２では、係合部３０を第２の縦辺部１３に設け、この係合部３０と上辺部１７に形成した係合孔３６とを係合させたが、図２１に示すように、連結辺部１６に、該連結辺部１６の長さ方向略中央部から第２の縦辺部１３側でかつ上側に延びる片持ちはり状の係合部３０を設けて、この係合部３０と下辺部１８の第２の縦辺部１３側端部（下端部）とを係合させるようにしてもよい。この場合も、係合部３０と下辺部１７の第２の縦辺部１３側端部とが係合しているときに、上辺部１７の第１の縦辺部１２側端部と第２の縦辺部１３との間における該第２の縦辺部１３の厚み方向に沿った距離が非係合時よりも小さくなるように構成すればよい。
【００５８】
加えて、上記実施形態１と同様に、係合部３０の可撓部３１は、第１の縦辺部１２側に傾ける必要はなく、基端部から略真上に延びるようにしてもよく、係合部３０を、第２の縦辺部１２とは別部材で構成してもよい。また、留め金具１０は、取付辺部１１がないものであってもよい。
【００５９】
さらに、上記実施形態２では、係合部３０と上辺部１７の係合用孔３６との係合時に、第１及び第２の縦辺部１２，１３の上端部を互いに近付くように撓ませて、上辺部１７の第１の縦辺部１２側端部を第１の縦辺部１２に当接させたときに、第１及び第２の縦辺部１２，１３の上端部間の水平距離を、非係合時よりも小さくかつ断面コ字状溝３における自動車道路と反対側の側面との隙間量Ｓよりも小さくなるようにしたが、上記水平距離が上記隙間量Ｓ以上であっても、非係合時よりも小さければ（すなわち、上辺部１７の第１の縦辺部１２側端部と第２の縦辺部１３との間における該第２の縦辺部１３の厚み方向に沿った距離が、非係合時よりも小さければ）、第１及び第２の縦辺部１２，１３の上端部を上記隙間に挿入し易くすることができる。
【００６０】
（実施形態３）
図２２は本発明の実施形態３を示し、留め金具１０の基本形状は上記実施形態１と同様であるが、係合部２０の可撓部２１の形状を上記実施形態１とは異ならせたものである。
【００６１】
すなわち、この実施形態３では、係合部２０の可撓部２１の先端部には延設部２３は設けられておらず、図９のように可撓部２１の幅方向全体に亘って１つの突起部２２のみが設けられている。この可撓部２１の上下方向中間部には、第１の縦辺部１２の厚み方向における第２の縦辺部１３と反対側面に対して第２の縦辺部１３と反対側に突出した状態で略円弧状に湾曲してなる湾曲部２４が形成されている。そして、上記突起部２２と斜辺部１４ないし第２の縦辺部１３の上端部とが係合しているときに、該第２の縦辺部１３の上端部と上記湾曲部２４（第２の縦辺部１３と反対側に最も突出した部分）との間の水平距離Ｋが、遮音板４と断面コ字状溝３における自動車道路と反対側の側面との隙間量Ｓよりも大きく設定されている。尚、上記係合時において第１及び第２の縦辺部１２，１３の上端部間の距離Ｌ２は、上記実施形態１と同様に、非係合時のＬ１よりも小さくかつ上記隙間量Ｓよりも小さい値に設定されている（勿論、上記隙間量Ｓよりも大きくてもよい）。
【００６２】
上記留め金具１０を遮音板４と断面コ字状溝３の自動車道路と反対側の側面との隙間に装着して該遮音板４を固定するには、先ず、予め係合部２０の突起部２２と斜辺部１４ないし第２の縦辺部１３の上端部とを係合した留め金具１０の第１及び第２の縦辺部１２，１３を上記隙間に挿入する。すると、図２３に示すように、可撓部２１の湾曲部２４の下部が遮音板４の上端部角部に当接すると共に、第２の縦辺部１３における自動車道路と反対側面の上端部が、断面コ字状溝３の自動車道路と反対側の側面に当接する。
【００６３】
続いて、この状態で第１及び第２の縦辺部１２，１３を上記隙間に押し込んで挿入し続けると、可撓部２１全体は第２の縦辺部１３側へ撓むことができないので、上記湾曲部２４のみが第２の縦辺部１３側へ変位し、その湾曲度合いが徐々に小さくなって、可撓部２１の先端部の突起部２２が上側でかつ第２の縦辺部１３と反対側へ徐々に移動していく。つまり、突起部２２と斜辺部１４ないし第２の縦辺部１３の上端部との係合を解除しながら第１及び第２の縦辺部１２，１３を上記隙間に挿入することになる。そして、取付辺部１１の嵌合孔１１ａを遮音板４の上端面の嵌合部４ｃに嵌合させて留め金具１０をセットすると、そのセット完了と略同時に上記係合が完全に解除され、このことで、留め金具１０の装着が完了する。
【００６４】
したがって、上記実施形態３では、留め金具１０のセット完了と略同時に、突起部２２と斜辺部１４ないし第２の縦辺部１３の上端部との係合を解除することができ、係合解除工程を別途に設ける必要がない。一方、湾曲部２４が遮音板４の上端部角部に当接した後における留め金具１０の押込力は、湾曲部２４を変形させるだけの力で済む。よって、留め金具１０の装着が、上記実施形態１，２よりも格段に容易になる。
【００６５】
尚、可撓部２１の先端部に１つの突起部２２しか設けていないが、上記実施形態１のように、２つの突起部２２，２２を設けてもよく、その両突起部２２，２２間に延設部２３があってもよい。さらに、上記実施形態１の種々の変形例と同様の構成にしてもよい。そして、係合部２０を第２の縦辺部１３に設ける一方、この係合部２０と係合する係合受部を第１の縦辺部１２に設けてもよく、この場合も、係合部２０に可撓部を設けてその可撓部を、遮音板４と断面コ字状溝３の自動車道路と反対側の側面との隙間への挿入時に該側面に当接させる等して、留め金具１０の上記隙間への装着完了と略同時に係合部２０と係合受部との係合が解除されるように構成しておけばよい。
【００６６】
また、図２４に示すように、取付辺部１１がないものであってもよく、このような取付辺部１１がない留め金具１０は、図２５に示すように、特に最下部に位置する遮音板４の下端部と断面コ字状溝３における自動車道路と反対側の側面との隙間に装着するのがよい。こうすれば、凸部４ｂを有していない最下部の遮音板４に対して、上端部だけでなく下端部をも自動車道路側に押圧して、最下部の遮音板４の保持を確実に行うようにすることができる。
【００６７】
【発明の効果】
以上説明したように、本発明の防音壁の遮音板留め金具によると、力の弱い作業者であっても留め金具を簡単な作業で容易に装着することができ、安全で作業性に優れていると共に、その装着作業時に大きな音が発生したり、留め金具が壊れて散乱したりするのを防止することができる。
【図面の簡単な説明】
【図１】本発明の実施形態１に係る遮音板留め金具が設けられた防音壁を示す断面図である。
【図２】図１のII−II線断面図である。
【図３】遮音板留め金具の詳細を示す斜視図である。
【図４】遮音板留め金具の側面図である。
【図５】係合部と第２の縦辺部の上端部とが係合している状態を示す図３相当図である。
【図６】遮音板留め金具の装着初期の状態を示す図１の要部拡大図である。
【図７】遮音板留め金具の装着途中の状態を示す図６相当図である。
【図８】遮音板留め金具の装着完了の状態を示す図６相当図である。
【図９】遮音板留め金具の係合部の変形例を示す図３相当図である。
【図１０】遮音板留め金具の係合部のさらなる変形例を示す図３相当図である。
【図１１】遮音板留め金具の係合部のさらなる変形例を示す図３相当図である。
【図１２】遮音板留め金具の係合部のさらなる変形例を示す図３相当図である。
【図１３】実施形態２を示す図３相当図である。
【図１４】実施形態２を示す図４相当図である。
【図１５】実施形態２を示す図８相当図である。
【図１６】遮音板留め金具の係合部の変形例を示す図１３相当図である。
【図１７】遮音板留め金具の係合部のさらなる変形例と係合用切欠きとを示す図１３相当図である。
【図１８】遮音板留め金具の係合部のさらなる変形例を示す図１３相当図である。
【図１９】遮音板留め金具の係合部のさらなる変形例と通過用孔とを示す図１３相当図である。
【図２０】遮音板留め金具の係合部のさらなる変形例と通過用切欠きとを示す図１３相当図である。
【図２１】遮音板留め金具の係合部を連結辺部に設けた変形例を示す図１４相当図である。
【図２２】実施形態３を示す図４相当図である。
【図２３】実施形態３に係る遮音板留め金具の装着途中の状態を示す要部拡大断面図である。
【図２４】実施形態３の変形例を示す遮音板留め金具の斜視図である。
【図２５】図２４の遮音板留め金具が、最下部に位置する遮音板の下端部と断面コ字状溝の側面との隙間に装着された状態を示す防音壁の断面図である。
【符号の説明】
１ 防音壁
２ 支柱
３ 断面コ字状部
４ 遮音板
１０ 遮音板留め金具
１２ 第１の縦辺部
１３ 第２の縦辺部
１６ 連結辺部
１７ 上辺部
１８ 下辺部
２０，３０ 係合部（係合手段）
２１，３１ 可撓部
２２，３２ 突起部
２３，３３ 延設部
２４ 湾曲部
３６ 係合用孔
３７ 係合用切欠き[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a leaf spring type sound insulating plate clamp for fixing a sound insulating plate on a sound insulating wall.To the toolRelated technical fields.
[0002]
[Prior art]
Generally, soundproof walls provided on both sides of an automobile road and the like include, for example, as shown in Japanese Utility Model Laid-Open Publication No. 4-57513, a plurality of columns that are erected at predetermined intervals and a pair of adjacent pairs of the columns. A U-shaped groove formed on the opposing surface of the column and extending in the length direction of the column, and is fitted between the opposed U-shaped grooves, and has a thickness greater than the groove width of the U-shaped groove. And a sound insulating plate set small. A leaf spring type sound insulating plate fastener is attached to a gap (a gap in a groove width direction) between the sound insulating plate and one side surface of the U-shaped groove in cross section, and the sound insulating plate is elastically restored by the fastener. The groove is pressed and fixed to the other side surface of the U-shaped groove.
[0003]
The metal fastener basically extends in a substantially vertical direction, and when attached to the gap, a first surface in a thickness direction of which contacts a surface on the gap side in the thickness direction of the sound insulating plate. A vertical side portion is provided so that the horizontal distance between the first vertical side portion and the first vertical side portion increases toward the upper side, and when the fastener is attached to the gap, A second vertical side portion in which the upper end of the side opposite to the first vertical side in the thickness direction is in contact with one side surface of the U-shaped groove. The lower ends of the first and second vertical sides are connected to each other via a connecting side as described in the above publication, or as shown in, for example, Japanese Utility Model Application Laid-Open No. 61-50109. Are connected directly without the connection side.
[0004]
The horizontal distance between the lower ends of the first and second vertical sides is set smaller than the gap, while the horizontal distance between the upper ends is set larger than the gap. In order to attach the fastener to the gap between the sound insulating plate and the U-shaped groove, first, the lower ends of the first and second vertical sides are inserted into the gap, and the fastener is inserted from above. By hitting with a hammer or the like, the upper ends of the first and second vertical sides are bent in directions approaching each other, and are completely inserted into the gap.
[0005]
[Problems to be solved by the invention]
However, in the above-described conventional mounting method of the fastener, it is necessary to hit the fastener with a heavy hammer to mount the fastener, so that it takes a long time to perform the mounting operation, and it is not possible to allow a weak worker to perform the mounting operation. There's a problem. In addition, a loud noise may be generated during the mounting operation, and the fastener may be damaged.
[0006]
The present invention has been made in view of such a point, and an object of the present invention is to improve the configuration of the above-described sound insulating plate fastener of the soundproof wall, thereby improving the sound insulating plate of the fastener. The present invention is to make it possible to smoothly mount the gap between the groove and the U-shaped groove by a simple operation without using a heavy hammer or the like.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, the first vertical side portion is provided with an engaging portion that is detachable from an upper end portion of the second vertical side portion. The horizontal distance between the upper ends of the first and second vertical sides is smaller when the upper and lower ends of the second vertical side are engaged with each other than when they are not engaged.
[0008]
Specifically, according to the present invention, a plurality of columns erected at predetermined intervals and a U-shaped groove formed in the opposing surface of the pair of adjacent columns and extending in the longitudinal direction of the columns. And a sound insulation wall fitted between the opposed U-shaped grooves and having a thickness smaller than the groove width of the U-shaped grooves. The present invention is directed to a leaf spring type sound insulating plate fastener which is attached to a gap between one side surface of the groove and presses the sound insulating plate against the other side surface of the U-shaped groove by elastic restoring force.
[0009]
A first vertical side portion extending substantially vertically and having one surface in a thickness direction abutting on a surface on the gap side in the thickness direction of the sound insulating plate when attached to the gap; And extends in a substantially vertical direction so that the horizontal distance from the first vertical side increases with facing the vertical side, and a lower end is connected to a lower end of the first vertical side. A second vertical side portion in which an upper end portion of a side opposite to the first vertical side portion in a thickness direction abuts one side surface of the U-shaped groove when mounted in the gap; And an engaging portion which is provided on the vertical side portion of theThe engagement portion has a base end portion connected to the first vertical side portion and extending upward from the base end portion, and a distal end portion capable of bending in a thickness direction of the first vertical side portion. A beam-shaped flexible portion, and formed at the distal end of the flexible portion so as to protrude toward the second vertical side and to cover the upper side of the upper end of the second vertical side. Consisting of a projection that engages,When the engaging portion and the upper end of the second vertical side are engaged, the horizontal distance between the upper ends of the first and second vertical sides is smaller than when disengaging. It is configured as follows.
[0010]
With the above configuration, when the engagement portion is engaged with the upper end of the second vertical side, the horizontal distance between the upper ends of the first and second vertical sides is set to the sound insulating plate and the U-shaped groove in cross section. Or the gap amount with one of the side surfaces may be substantially the same as or smaller than the gap amount. As a result, the worker only has to release the above-mentioned engagement by inserting the fastener previously engaged with the engaging portion and the upper end of the second vertical side into the gap, and the worker having a weak force is required. Even with this, it is possible to easily and smoothly mount the fastener with a simple operation, and it is possible to prevent a loud noise from being generated or the fastener from being broken during the mounting operation.And since an engaging part consists of a flexible part and a protrusion part, an engaging part can be formed with a simple structure. Further, the engaging portion can be formed integrally with the first vertical side portion, and the engaging portion can be formed at low cost.
[0011]
Claim2In the invention of the claim,1In the invention, two protrusions are provided at a predetermined interval in a width direction of the first vertical side portion, and an extending portion extending in a substantially vertical direction is provided at a distal end of the flexible portion between the two protrusions. Is formed.
[0012]
With this, a tool such as a screwdriver can be inserted between the extended portion and the second vertical side portion using the extended portion as a guide, and by turning or prying with the tool inserted, The engagement between the engagement portion and the second vertical side portion can be easily released.
[0013]
Claim3In the invention of the claim,1In the invention of the above, in a state in which the flexible portion protrudes to the side opposite to the second vertical side with respect to the side opposite to the second vertical side in the thickness direction of the first vertical side at the middle in the vertical direction. A curved portion formed by bending is formed, and when the engagement portion and the upper end of the second vertical side are engaged with each other, the upper end of the second vertical side and the curved portion are connected to each other. The horizontal distance between them is set to be larger than the gap between the sound insulating plate and one side surface of the U-shaped groove in cross section.
[0014]
By doing so, the fastener previously engaged with the engaging portion and the upper end of the second vertical side portion is inserted into the gap between the sound insulating plate and one of the side surfaces of the U-shaped groove in the middle of mounting. Thus, the curved portion of the flexible portion contacts the sound insulating plate, and the upper end of the second vertical side portion contacts one side surface of the U-shaped groove. When the fastener is further pushed in the insertion direction in this abutting state, the degree of curvature of the curved portion gradually decreases, and as a result, the protrusion at the distal end of the flexible portion is on the upper side and the second vertical side portion. After gradually moving to the opposite side, the engagement between the engaging portion and the upper end portion of the second vertical side portion is released. Therefore, the engagement can be released almost simultaneously with the completion of the setting of the fastener to the predetermined position, and the mounting of the fastener is further facilitated.
[0015]
Claim4In the invention, a plurality of pillars erected at predetermined intervals, a U-shaped groove formed on the facing surface of the pair of adjacent pillars and extending in the longitudinal direction of the pillar, In the sound insulation wall provided with a sound insulation plate having a thickness smaller than the groove width of the U-shaped groove, and one of the sound insulation plate and one of the U-shaped grooves The present invention is directed to a leaf spring type sound insulating plate fastener which is attached to a gap between the side surface and presses the sound insulating plate against the other side surface of the U-shaped groove by elastic restoring force.
[0016]
A first vertical side portion extending substantially vertically and having one surface in a thickness direction abutting on a surface on the gap side in the thickness direction of the sound insulating plate when attached to the gap; And extends in a substantially vertical direction so that the horizontal distance from the first vertical side portion is increased toward the upper side and the first vertical side portion in the thickness direction when attached to the gap. An upper end of the side opposite to the side is connected to a second vertical side contacting one side of the U-shaped groove, and both ends are connected to lower ends of the first and second vertical sides, respectively. A connecting side portion having a length between the both end portions set to be smaller than the gap and an upper end portion of the second vertical side portion, from the upper end portion toward the first vertical side portion. And an upper side part having an engaging hole or an engaging notch in a part thereof, connected to a first vertical side end of the upper side part, A lower side extending from the end toward the second vertical side toward the lower side; and a lower side provided on the second vertical side and engaging with the engaging hole or the notch for the upper side. A detachable engagement portion, wherein when the engagement portion is engaged with an engagement hole or an engagement notch in the upper side portion, the first vertical side end portion of the upper side portion and It is configured such that a distance along the thickness direction of the second vertical side portion between the second vertical side portion and the second vertical side portion is smaller than that at the time of non-engagement.
[0017]
According to the present invention, the upper ends of the first and second vertical sides are bent so as to be close to each other when the engagement portion is engaged with the engagement hole or the engagement notch in the upper side, so that the upper side can be bent. When the end of the first vertical side is brought into contact with the first vertical side, the horizontal distance between the upper ends of the first and second vertical sides is equal to that of the sound insulating plate and the U-shaped groove in cross section. The gap amount may be substantially the same as the gap amount with one side surface, or may be smaller than the gap amount. At this time, the elastic restoring force of the upper ends of the first and second vertical sides should be relatively small until the first vertical side end of the upper side comes in contact with the first vertical side. Thus, the upper end of the first and second vertical sides can be easily inserted into the gap between the sound insulating plate and one side surface of the U-shaped groove while bending the upper end of the first and second vertical sides with a small force. As a result, in the same manner as in the first aspect of the present invention, the worker inserts the fastener previously engaged with the engagement portion and the engagement hole or the engagement notch in the upper side into the gap to perform the engagement. You only need to release it. Then, after releasing the engagement, not only the first and second vertical sides, but also the elastic restoring force of the upper side and the lower side is made to act so as to press the sound insulating plate against the side surface of the U-shaped groove in cross section. A sufficient pressing force can be obtained.
[0018]
Claim5In the invention of the claim,4In the invention, the base portion of the engaging portion is connected to the second vertical side portion, extends upward from the base end portion, and the distal end portion can bend in the thickness direction of the second vertical side portion. A cantilevered flexible portion, and a second portion of an engagement hole or an engagement notch formed at an end portion of the flexible portion so as to protrude in a direction opposite to the first vertical side portion and at an upper side portion. And a projection that engages with the side edge of the vertical side. By doing this,The engaging portion can be formed at a low cost with a simple configuration.
[0019]
Claim6In the invention of the claim,5In the invention, the two protrusions are provided at predetermined intervals in the width direction of the second vertical side portion, and the extending portion extending in the substantially vertical direction is provided at the tip of the flexible portion between the two protrusions. Is formed. As a result, the claims2The same operation and effect as those of the invention can be obtained.
[0020]
Claim7In the invention of the claim,4In the invention, the base portion of the engaging portion is connected to the second vertical side portion, extends upward from the base end portion, and the distal end portion can bend in the thickness direction of the second vertical side portion. A flexible portion having a cantilever shape and a projecting portion formed at an end portion of the flexible portion so as to protrude in a width direction of the second vertical side portion and having an engaging hole or an engaging notch in an upper side portion. It shall consist of an edge on the side corresponding to the direction and a projecting portion to be engaged. With this,The engaging portion can be formed at a low cost with a simple configuration.
[0021]
Claim8In the invention, a plurality of pillars erected at predetermined intervals, a U-shaped groove formed on the facing surface of the pair of adjacent pillars and extending in the longitudinal direction of the pillar, In the sound insulation wall provided with a sound insulation plate having a thickness smaller than the groove width of the U-shaped groove, and one of the sound insulation plate and one of the U-shaped grooves The present invention is directed to a leaf spring type sound insulating plate fastener which is attached to a gap between the side surface and presses the sound insulating plate against the other side surface of the U-shaped groove by elastic restoring force.
[0022]
The first vertical side portion extending substantially in the up-down direction and having one surface in the thickness direction abutting on the surface on the gap side in the thickness direction of the sound insulating plate, and facing the first vertical side portion, and It extends substantially vertically so that the horizontal distance from the first vertical side increases toward the upper side, and when attached to the gap, the upper end of the side opposite to the first vertical side in the thickness direction A second vertical side portion abutting on one side surface of the U-shaped cross-section groove, and both end portions are connected to lower end portions of the first and second vertical side portions, respectively. A connection side set smaller than the gap, an upper side connected to an upper end of the second vertical side, and extending from the upper end toward the first vertical side; A lower side portion connected to an end of the first vertical side, and extending from the end toward the second vertical side and downward. An engagement portion provided on the connection side portion and capable of being disengaged from an end of the lower side portion on the side of the second vertical side portion, wherein the engagement portion and the second vertical side portion of the lower side portion are provided. A distance along the thickness direction of the second vertical side between the first vertical side end of the upper side and the second vertical side when the end is engaged. Is configured to be smaller than that at the time of non-engagement.
[0023]
As a result, the claims4Similarly to the invention, the upper ends of the first and second vertical sides are set so that the horizontal distance therebetween is at the same level as the gap between the sound insulating plate and one side surface of the U-shaped groove in cross section or slightly smaller. Can be bent with a relatively small force, and the mounting work of the fastener is facilitated.
[0024]
Claim9In the invention, a plurality of pillars erected at predetermined intervals, a U-shaped groove formed on the facing surface of the pair of adjacent pillars and extending in the longitudinal direction of the pillar, In the sound insulation wall provided with a sound insulation plate having a thickness smaller than the groove width of the U-shaped groove, and one of the sound insulation plate and one of the U-shaped grooves The present invention is directed to a leaf spring type sound insulating plate fastener which is attached to a gap between the side surface and presses the sound insulating plate against the other side surface of the U-shaped groove by elastic restoring force.
[0025]
A first vertical side portion extending substantially vertically and having one surface in a thickness direction abutting on a surface on the gap side in the thickness direction of the sound insulating plate when attached to the gap; And extends in a substantially vertical direction so that the horizontal distance from the first vertical side increases with facing the vertical side, and a lower end is connected to a lower end of the first vertical side. A second vertical side portion in which an upper end portion of a side opposite to the first vertical side portion in a thickness direction abuts one side surface of the U-shaped groove when mounted in the gap; And engagement means for engaging the second vertical side portion with the vertical side portion ofThe engaging means includes a cantilever-shaped flexible portion formed on one of the first and second vertical sides, and an engagement receiving member formed on the other and engaged with the flexible portion. Department andWhen the first and second vertical sides are engaged with each other by the engaging means, the horizontal distance between the upper ends of the first and second vertical sides becomes smaller than when the first and second vertical sides are not engaged. It is configured as follows. Thus, the same function and effect as the first aspect of the invention can be obtained.
[0026]
Claim10In the invention of the claim,9In the invention of the above, the sound insulating plate fastener of the sound insulating wall is provided with the first vertical side portion and the second vertical portion by the engaging means substantially simultaneously with the completion of the installation in the gap between the sound insulating plate and one side surface of the U-shaped groove in cross section. It is assumed that the engagement with the vertical side is released. By this, the claim3Almost the same operation and effect as those of the invention can be obtained.
[0027]
BEST MODE FOR CARRYING OUT THE INVENTION
(Embodiment 1)
FIGS. 1 and 2 show a soundproof wall 1 provided with a sound insulating plate fastener 10 according to the first embodiment of the present invention. (In a direction perpendicular to the plane of FIG. 1) at a predetermined interval. The upper portion of each of the columns 2 is curved in an arc shape toward the automobile road. Each of the columns 2 is made of H-shaped steel and has two U-shaped grooves 3 extending in the longitudinal direction of the column 2. (The length direction of the soundproof wall 1). That is, each U-shaped groove 3 is formed on the opposing surface of the pair of columns 2 and 2 adjacent to each other.
[0028]
A plurality of sound insulating plates 4, 4,... Extending in the direction along the motorway are vertically stacked between the opposed U-shaped grooves 3, 3 on the opposing surfaces of the pair of columns 2, 2. It is fitted in a state. Each sound insulating plate 4 is made of plastic such as polycarbonate or a box type made of iron and aluminum, and has a thickness t smaller than the groove width W of the U-shaped groove 3. In FIGS. 1 and 2, reference numeral 5 denotes a metal exterior plate attached and fixed to the side of each of the columns 2 opposite to the motorway.
[0029]
In the gap (gap amount S = Wt) between each of the sound insulation plates 4 and the side surface of each of the U-shaped grooves 3 on the side opposite to the motorway, the sound insulation plates 4 are formed by the elastic restoring force. A leaf spring-type sound insulating plate fastener 10 made of a spring steel or the like and pressed against the side of the vehicle roadside of No. 3 is mounted. The clasp 10 is provided at the upper end of each of the sound insulating plates 4 at both ends in the length direction, and the upper end of the side opposite to the motorway in the thickness direction of the sound insulating plate 4 (the above-mentioned gap side surface) is connected to the side of the motorway. Is configured to be pressed. Note that a stepped portion 4a that is recessed downward is formed at the upper end portion of each sound insulation plate 4 at the side of the motorway, and between the stepped portion 4a and the side surface of the U-shaped groove 3 on the motorway side. Is designed such that a convex portion 4b provided at a lower end portion of the sound insulating plate 4 which is stacked immediately above the sound insulating plate 4 is inserted, so that the lower end portion of the sound insulating plate 4 moves in the thickness direction. Are being regulated.
[0030]
Specifically, as shown in FIGS. 3 and 4, when the fastener 10 is attached to the gap, the lower surface of the fastener 10 contacts the upper end surface of the sound insulating plate 4 and A mounting side portion 11 having a fitting hole 11a that is fitted substantially with a fitting portion 4c (see FIG. 6) having a circular cross section protruding from an end surface is provided. An upper end portion of a first vertical side portion 12 extending in a substantially vertical direction is connected to an end of the mounting side portion 11 on the opposite side to the motorway. The side surface of the automobile road in the thickness direction of the first vertical side portion 12 is substantially entirely in contact with the side surface of the gap in the thickness direction of the sound insulating plate 4 when the fastener 10 is attached to the gap. Has become. The lower end of the first vertical side portion 12 is substantially vertically oriented so as to face the first vertical side portion 12 and to increase the horizontal distance from the first vertical side portion 12 upward. The lower end of the second vertical side 13 extending is connected. The upper end of the side surface (the side surface opposite to the motorway) opposite to the first vertical side portion 12 in the thickness direction of the second vertical side portion 13 has the cross section when the fastener 10 is attached to the gap. The U-shaped groove 3 comes into contact with the side surface opposite to the motorway. An oblique side portion 14 extending downward from the upper end portion on the first vertical side portion 12 side is connected to the upper end portion of the second vertical side portion 13. The end of the hypotenuse portion 14 on the side of the first vertical side portion 12 comes into contact with the substantially vertical center of the first vertical side portion 12 when the fastener 10 is attached to the gap. I have. An end (lower end) of the oblique side 14 on the first vertical side 12 side is bent at a substantially right angle and slightly protrudes toward the second vertical side 13.
[0031]
At a substantially central portion in the width direction of the first vertical side portion 12, an upper end portion of the oblique side portion 14 or the second vertical side portion 13 (a connection portion between the oblique side portion 14 and the second vertical side portion 13) is provided. On the other hand, an engaging portion 20 which can be freely engaged and disengaged is provided. The engaging portion 20 has a base end connected to the first vertical side 12 and extends upward (slightly inclined toward the second vertical side 13) from the base end to form a distal end. The cantilevered flexible portion 21 that can bend in the thickness direction of the first vertical side portion 12, and the distal end portion of the flexible portion 21 projects toward the second vertical side portion 13. And two projections 22, 22 that engage with the upper end of the second vertical side portion 13 so as to cover the upper side (the engagement state is indicated by a two-dot chain line in FIG. 4 or See FIG. 5). The lower surface of each projection 22 has an arc shape along the upper end of the oblique side portion 14 or the second vertical side portion 13. Therefore, the upper end of the oblique side portion 14 or the second vertical side portion 13 constitutes an engagement receiving portion that engages with each of the protrusions 22 of the flexible portion 21 of the engaging portion 20. The portion and the engaging portion 20 constitute an engaging means for engaging the first vertical side portion 12 and the second vertical side portion 13. The flexible portion 21 and each protrusion 22 of the engagement portion 20 are formed integrally with the first vertical side portion 12 by being separated from the periphery except for one side portion by a substantially U-shaped slit.
[0032]
The two projections 22, 22 of the engaging portion 20 are provided at a predetermined interval in the width direction of the first vertical side portion 12 (the width direction of the flexible portion 21), and the two projections 22, 22 are provided. The extending portion 23 extends substantially vertically (in the direction in which the flexible portion 21 extends) and has an upper end slightly above the projections 22 at the distal end portion of the flexible portion 21 between them. Is formed.
[0033]
The horizontal distance between the upper ends of the first and second vertical sides 12 and 13 (the horizontal distance between the side opposite to the opposing surface) is equal to the distance between each of the protrusions 22 of the engaging portion 20 and the oblique side. When the upper end of the 14th or second vertical side portion 13 is not engaged, it is set to L1 which is larger than the gap amount S between the sound insulation plate 4 and the side surface of the U-shaped groove 3 on the side opposite to the motorway. On the other hand, when engaged, it is set to L2 which is smaller than L1 when disengaged and smaller than the gap amount S. Even if the horizontal distance between the upper ends of the first and second vertical sides 12 and 13 is equal to or slightly larger than the gap amount S at the time of engagement, the sound insulation plate fastener 10 is light as described later. If it can be attached to a predetermined position by force, that may be sufficient.
[0034]
A method of fixing the sound insulating plate 4 by mounting the sound insulating plate fastener 10 configured as described above in the gap between the sound insulating plate 4 and the side of the U-shaped groove 3 opposite to the automobile road will be described. Note that, at the stage of mounting the fastener 10, the exterior plate 5 is not attached and fixed to each of the columns 2.
[0035]
First, by bending the second vertical side portion 13 of the fastener 10 in advance toward the first vertical side portion 12, each projection 22 of the engaging portion 20 and the oblique side portion 14 to the second vertical side portion 13 are bent. Is engaged with the upper end. This engagement may be performed by a manufacturing device at the time of manufacturing the fastener 10, or may be performed by a mounting operator using a tool. Then, while maintaining this state, as shown in FIG. 6, the first and second vertical sides 12, 13 of the fastener 10 are inserted into the gaps, and the fitting holes 11a of the mounting side 11 are inserted. Is fitted to a fitting portion 4c on the upper end surface of the sound insulating plate 4 fitted between the opposed U-shaped grooves 3 and 3 facing each other. At this time, since the horizontal distance L2 between the upper ends of the first and second vertical sides 12 and 13 is smaller than the gap amount S, the horizontal distance L2 from the lower ends of the first and second vertical sides 12 and 13 is smaller. The whole up to the upper end can be easily inserted into the gap. That is, in a state where the engaging portion 20 is not provided as in the related art, in order to insert the upper end portions of the first and second vertical side portions 12 and 13 into the gaps, the upper and lower portions are forcibly inserted from above by hitting with a hammer or the like. Although necessary, such an operation need not be performed at all.
[0036]
Next, as shown in FIG. 7, between the extending portion 23 of the engaging portion 20 and the upper end of the oblique side portion 14 or the second vertical side portion 13, a wedge-shaped driver or the like is used. By inserting and turning or prying the tool 50 from the opening side of the U-shaped groove 3 on the upper side, each projection 22 of the engaging portion 20 and the upper end of the oblique side portion 14 or the second vertical side portion 13 Release the engagement with the part. At this time, if there is no extending portion 23, the engagement is released by inserting the tool 50 between each protrusion 22 and the upper end of the oblique side 14 or the second vertical side 13. By providing the extension portion 23, the tool 50 can be more easily inserted than when there is no extension portion 23, and the engagement can be easily released.
[0037]
As described above, when the engagement between the projections 22 of the engagement portion 20 and the upper end of the oblique side portion 14 or the second vertical side portion 13 is released, the upper end of the second vertical side portion 13 on the side opposite to the automobile road is released. While the portion abuts on the side of the U-shaped groove 3 on the side opposite to the motorway, substantially the entire side of the first vertical side 12 on the motorway contacts the side of the sound insulating plate 4 opposite to the motorway. Thus, the sound insulating plate 4 is pressed and fixed to the side surface of the U-shaped groove 3 on the side of the motorway, and the mounting of the fastener 10 is completed (see FIG. 8).
[0038]
Therefore, in the above-described embodiment, when each of the protrusions 22 of the engagement portion 20 and the upper end of the oblique side 14 or the second vertical side 13 are engaged, the first and second vertical side The horizontal distance L2 between the upper end portions of the grooves 12 and 13 is smaller than L1 when not engaged, and is at the same level as the clearance S between the sound insulating plate 4 and the side surface of the U-shaped groove 3 on the side opposite to the automobile road, or Since it is configured to be smaller than the gap amount S, if each of the protrusions 22 of the engagement portion 20 and the upper end of the oblique side portion 14 or the second vertical side portion 13 are engaged in advance, The fastener 10 can be easily inserted into the gap without forcibly inserting it with a hammer or the like, and the engagement can be easily released after the insertion. Therefore, even if the worker has a weak force, the fastener 10 can be easily attached by a simple operation, and at the same time, a loud noise is generated and the fastener 10 is prevented from being broken. be able to.
[0039]
In the first embodiment, two protrusions 22 are provided at the distal end of the flexible portion 21 of the engagement portion 20, and the extension 23 is formed between the two protrusions 22. The extending portion 23 is not always necessary, and one projection 22 may be provided over the entire width of the flexible portion 21 as shown in FIG. As shown in FIG. 10, two engaging portions 20 may be provided on both sides in the width direction of the first vertical side portion 13.
[0040]
Further, as shown in FIG. 11, the engaging portion 20 may be separated from the surroundings by a substantially T-shaped slit so as to be integrally formed with the first vertical side portion 12. In this case, if the portion of the distal end of the flexible portion 21 that protrudes in the width direction of the first vertical side portion 12 is bent at a substantially right angle, the two protrusions 22 can be formed, and the two protrusions 22 can be formed. An extension 23 can be formed between the protrusions 22. Further, the position of the upper end of the extension 23 may be higher than each of the protrusions 22.
[0041]
Furthermore, as shown in FIG. 12, the protrusions 22, 22 may be formed by making cuts in both side portions of the distal end portion of the flexible portion 21 and bending the upper portion thereof at a substantially right angle. As shown in FIGS. 11 and 12, when the protrusions 22 are formed by bending both sides of the flexible portion 21 inward at substantially right angles, the upper end of the second vertical side portion 13 Can be reliably held.
[0042]
In addition, the flexible portion 21 of the engaging portion 20 does not need to be inclined toward the second vertical side portion 13 and may extend substantially directly above the base end portion. It may be constituted by a member different from the one vertical side portion 12. Further, it is not necessary to provide the engaging portion 20 on the first vertical side portion 12 and provide the engaging receiving portion for engaging with the engaging portion 20 on the second vertical side portion 13. 20 may be provided on the second vertical side portion 13, and the engagement receiving portion may be provided on the first vertical side portion 12.
[0043]
Furthermore, the mounting side 11 and the oblique side 14 are not always necessary. That is, if the elastic restoring force sufficient to press the sound insulating plate 4 can be obtained, the hypotenuse portion 14 may not be provided, and when the fastener 10 is attached, the side of the first vertical side portion 12 on the automobile road is sound insulating plate. For example, if it is attached to the side opposite to the motorway of No. 4, the mounting side portion 11 may be omitted.
[0044]
In the first embodiment, when each of the protrusions 22 of the engaging portion 20 is engaged with the upper end of the oblique side 14 or the second vertical side 13, the first and second vertical sides are engaged. The horizontal distance L2 between the upper ends of the portions 12, 13 is smaller than L1 when not engaged and smaller than the gap amount S between the sound insulating plate 4 and the side surface of the U-shaped groove 3 on the side opposite to the motorway. Although it is desirable that the horizontal distance L2 is equal to or larger than the gap amount S, if the horizontal distance L2 is smaller than the non-engaged L1, the upper ends of the first and second vertical side portions 12 and 13 will be described. Is much easier to insert into the gap than when disengaged.
[0045]
(Embodiment 2)
FIGS. 13 and 14 show a second embodiment of the present invention (note that the same parts as those in FIGS. 3 and 4 are denoted by the same reference numerals and detailed description thereof will be omitted). This is different from the first embodiment.
[0046]
That is, in the second embodiment, the lower ends of the first and second vertical sides 12 and 13 are connected to both ends of the connection side 16 extending substantially in the horizontal direction, respectively. The length between them is set smaller than the gap amount S between the sound insulation plate 4 and the side surface of the U-shaped groove 3 on the side opposite to the motorway. The upper end of the second vertical side portion 13 extends from the upper end toward the first vertical side portion 12 and downward, and when the fastener 10 is attached to the gap, The upper side 17 where the end of the first vertical side 12 is in contact with the first vertical side 12 is connected. A substantially rectangular engagement hole through which each projection 32 of an engagement portion 30 to be described later can pass and which engages with the engagement portion 30 is provided at a substantially central portion in the length direction and the width direction of the upper side portion 17. 36 are formed. At the end of the upper side 17 on the first vertical side 12 side, the end extends downward from the end toward the second vertical side 13 and the fastener 10 is attached to the gap. At this time, the lower side portion 18 in which the end of the second vertical side portion 13 is in contact with the second vertical side portion 13 is connected. An end (lower end) of the lower side 18 on the second vertical side 13 side is bent at a substantially right angle and slightly protrudes toward the first vertical side 12.
[0047]
At the center in the width direction of the second vertical side portion 13, there is provided an engaging portion 30 that is detachable from the engaging hole 36 of the upper side portion 17. The engaging portion 30 has a proximal end connected to the second vertical side portion 13 and extends upward (inclined toward the first vertical side portion 12) from the proximal end portion, and has a distal end portion at the second vertical side portion 13. 2, a cantilevered flexible portion 31 capable of bending in the thickness direction of the vertical side portion 13, and a distal end portion of the flexible portion 31 opposite to the first vertical side portion 13 (second side). And two projections 32, 32 formed to protrude toward the vertical side 13) and to engage with the side edge of the second vertical side 13 in the engagement hole 36 of the upper side 17. The protrusions 32 are provided at predetermined intervals in the width direction of the second vertical side portion 13 (width direction of the flexible portion 31), similarly to the engagement portion 20 in the first embodiment. An extended portion 33 is formed at the distal end of the flexible portion 31 between the projections 32, 32 so as to extend substantially vertically (in a direction in which the flexible portion 31 extends).
[0048]
When each of the projections 32 of the engagement portion 30 is engaged with the engagement hole 36 of the upper side 17, as shown by a two-dot chain line in FIG. The end of the portion 12 moves to the lower side and the second vertical side 13 side, and the lower end of the lower side 18 substantially abuts on the connecting portion between the second vertical side 13 and the connection side 16. The distal end of the flexible portion 31 of the engaging portion 30 is bent toward the first vertical side 12.
[0049]
The distance along the thickness direction of the second vertical side portion 13 between the end of the upper side portion 17 on the first vertical side portion 12 side and the second vertical side portion 13 is equal to the engagement portion 30. H1 is set when the engagement hole 36 of the upper side portion 17 is not engaged, and H2 is smaller than H1 when disengaged when engaged. Then, the upper ends of the first and second vertical sides 12 and 13 are bent so as to approach each other, and the end of the upper side 17 on the first vertical side 12 side contacts the first vertical side 12. When they are in contact with each other, the horizontal distance between the upper ends of the first and second vertical sides 12 and 13 (the horizontal distance between the side opposite to the opposing surface) is equal to the distance between the engagement portion 30 and the upper side 17. At the time of non-engagement with the hole 36, the gap amount is larger than the gap amount S, while at the time of engagement, it is smaller than at the time of non-engagement and smaller than the gap amount S. When the upper ends of the first and second vertical sides 12 and 13 are bent so as to approach each other, the elastic restoring force of the first and second vertical sides 12 and 13 is reduced by the force of the upper side 17. It is relatively small until the end of the first vertical side 12 contacts the first vertical side 12.
[0050]
In order to mount the fastener 10 in the gap between the sound insulating plate 4 and the side surface of the U-shaped groove 3 on the side opposite to the motorway, first, the end of the upper side 17 on the side of the first vertical side 12 is first set in advance. At the same time, the distal end portion of the flexible portion 31 of the engaging portion 30 is bent toward the first vertical side portion 12, and each projection 32 is bent toward the second vertical side portion 13 of the engagement hole 36. It is engaged with the side edge.
[0051]
Then, while bending the upper end portions of the first and second vertical side portions 12 and 13 so as to approach each other, the fitting hole 11a of the mounting side portion 11 is inserted into the upper end surface of the sound insulating plate 4 as in the first embodiment. To the fitting portion 4c. At this time, since the elastic restoring force of the first and second vertical sides 12, 13 is considerably small, the lower ends of the first and second vertical sides 12, 13 do not need to be forcibly inserted using a hammer or the like. Can be easily inserted into the gap from the top to the upper end.
[0052]
Next, similarly to the first embodiment, the engagement is released by inserting the tool 50 between the extension portion 33 and the edge of the engagement hole 36 on the second vertical side portion 13 side. Then, while the upper end of the second vertical side portion 13 on the side opposite to the motorway contacts the side surface of the U-shaped groove 3 on the opposite side to the motorway, the first vertical side portion 12 has the upper end on the side of the motorway. Substantially the whole is in contact with the side of the sound insulating plate 4 opposite to the automobile road, and the end of the upper side 17 on the first vertical side 12 side is in contact with the first vertical side 12 and the second side of the lower side 18 is second. Since the end of the side of the vertical side 13 contacts the second vertical side 13 (see FIG. 15), the sound insulating plate 4 is pressed against the side of the U-shaped groove 3 on the side of the motorway with a sufficient force. Can be.
[0053]
Therefore, also in the second embodiment, similarly to the first embodiment, the mounting operation of the fastener 10 can be easily performed.
[0054]
In the second embodiment, two protrusions 32, 32 are provided at the distal end of the flexible portion 31 of the engagement portion 30, and the extended portion 33 is formed between the two protrusions 32, 32. The extension portion 33 is not always necessary, and one protrusion 32 may be provided over the entire width of the flexible portion 21 as shown in FIG. In addition, as shown in FIG. 17, two engagement portions 30 may be provided on both side portions of the second vertical side portion 13 in the width direction. In this case, instead of the engagement holes 36, engagement notches 37 may be provided on both sides in the width direction of the upper side 17.
[0055]
Further, as shown in FIG. 18, the engagement portion 30 may be formed integrally with the second vertical side portion 13 by separating the engagement portion 30 from the periphery by a substantially T-shaped slit. In this case, by bending a portion of the distal end portion of the flexible portion 31 that protrudes in the width direction of the second vertical side portion 13 at a substantially right angle, the two protrusion portions 32 can be formed, and the two protrusion portions 32 can be formed. An extension 33 can be formed between the projections 32.
[0056]
Furthermore, as shown in FIG. 19, two protrusions 32, 32 may be formed at the distal end of the flexible portion 31 so as to protrude on both sides in the width direction of the second vertical side portion 13. In this case, on the first vertical side 12 side of the engagement hole 36 of the upper side 17, a passage hole 38 through which a tip portion including both the projections 32 and 33 of the engagement portion 30 can pass is formed. The two projections 32, 32 are passed from the lower side to the upper side of the passage hole 38, and the edge of the engagement hole 36 on the side corresponding to the projection direction of each of the projections 32 (both ends in the width direction of the upper side 17). Side edge). In the case where the projection 32 is projected in the width direction of the second vertical side portion 13 as described above, when the two engaging portions 30 are formed on both side portions of the second vertical side portion 13 in the width direction, respectively. As shown in FIG. 20, the protruding portion 32 is formed so as to protrude from the distal end portion of the flexible portion 31 of each engaging portion 30 in a direction opposed to each other, and each of the engaging notches 37 A notch 39 for passage through which the protrusion 32 of each engaging portion 30 can pass may be formed on the first vertical side portion 12 side in FIG.
[0057]
Further, in the second embodiment, the engaging portion 30 is provided in the second vertical side portion 13 and the engaging portion 30 and the engaging hole 36 formed in the upper side portion 17 are engaged with each other. As shown, a cantilevered engaging portion 30 is provided on the connecting side portion 16 and extends upward from the substantially central portion in the longitudinal direction of the connecting side portion 16 toward the second vertical side portion 13. The engagement portion 30 may be engaged with an end (lower end) of the lower side 18 on the second vertical side 13 side. Also in this case, when the engaging portion 30 is engaged with the end of the lower side 17 on the second vertical side 13 side, the end of the upper side 17 on the first vertical side 12 side and the second It is sufficient that the distance along the thickness direction of the second vertical side portion 13 between the second vertical side portion 13 and the vertical side portion 13 is smaller than that at the time of non-engagement.
[0058]
In addition, similarly to the first embodiment, the flexible portion 31 of the engaging portion 30 does not need to be inclined toward the first vertical side portion 12 and may extend substantially directly above the base end portion. The engaging portion 30 may be formed of a member different from the second vertical side portion 12. Further, the fastener 10 may not have the attachment side portion 11.
[0059]
Further, in the second embodiment, when the engagement portion 30 and the engagement hole 36 of the upper side portion 17 are engaged, the upper ends of the first and second vertical side portions 12 and 13 are bent so as to approach each other. The horizontal distance between the upper ends of the first and second vertical sides 12, 13 when the end of the upper side 17 on the side of the first vertical side 12 is brought into contact with the first vertical side 12. Is smaller than the non-engagement state and smaller than the gap amount S between the U-shaped groove 3 and the side surface on the side opposite to the motorway, but the horizontal distance is equal to or larger than the gap amount S. Is smaller than that at the time of non-engagement (that is, the thickness direction of the second vertical side portion 13 between the end of the upper side portion 17 on the first vertical side portion 12 side and the second vertical side portion 13). (If the distance along the line is smaller than the distance when it is not engaged), it is easy to insert the upper ends of the first and second vertical sides 12, 13 into the gap. Can.
[0060]
(Embodiment 3)
FIG. 22 shows a third embodiment of the present invention. The basic shape of the fastener 10 is the same as that of the first embodiment, but the shape of the flexible portion 21 of the engaging portion 20 is different from that of the first embodiment. Things.
[0061]
That is, in the third embodiment, the extending portion 23 is not provided at the distal end portion of the flexible portion 21 of the engaging portion 20, and extends over the entire width of the flexible portion 21 as shown in FIG. 9. Only one protrusion 22 is provided. In the middle part of the flexible part 21 in the vertical direction, the flexible part 21 protrudes from the side opposite to the second vertical part 13 in the thickness direction of the first vertical part 12 on the opposite side to the second vertical part 13. A curved portion 24 that is curved in a substantially arc shape in the state is formed. When the projection 22 and the upper end of the oblique side 14 or the second vertical side 13 are engaged, the upper end of the second vertical side 13 and the curved portion 24 (second Is set to be larger than the gap amount S between the sound insulation plate 4 and the side surface of the U-shaped groove 3 on the side opposite to the motorway in the U-shaped groove 3. Have been. The distance L2 between the upper ends of the first and second vertical sides 12 and 13 during the engagement is smaller than L1 during the non-engagement and the gap S It is set to a smaller value (of course, it may be larger than the gap amount S).
[0062]
In order to fix the sound insulating plate 4 by mounting the fastener 10 in a gap between the sound insulating plate 4 and the side surface of the U-shaped groove 3 on the side opposite to the motorway, first, the protrusions of the engaging portion 20 must be The first and second vertical sides 12, 13 of the fastener 10, which engage the 22 and the upper end of the oblique side 14 or the second vertical side 13, are inserted into the gap. Then, as shown in FIG. 23, the lower portion of the curved portion 24 of the flexible portion 21 abuts on the upper end corner of the sound insulating plate 4, and the upper end of the second vertical side 13 on the side opposite to the motorway is raised. Abuts the side surface of the U-shaped groove 3 on the side opposite to the motorway.
[0063]
Subsequently, in this state, if the first and second vertical sides 12, 13 are pushed into the gap and inserted continuously, the entire flexible portion 21 cannot bend toward the second vertical side 13 side. Only the bending portion 24 is displaced toward the second vertical side portion 13, and the degree of bending gradually decreases, so that the protrusion 22 at the distal end of the flexible portion 21 is on the upper side and the second vertical side portion 13 and gradually move to the opposite side. In other words, the first and second vertical sides 12 and 13 are inserted into the gaps while releasing the engagement between the protrusion 22 and the upper end of the oblique side 14 or the second vertical side 13. When the fastener 10 is set by fitting the fitting hole 11a of the mounting side portion 11 to the fitting portion 4c on the upper end surface of the sound insulating plate 4, the engagement is completely released almost simultaneously with the completion of the setting, Thus, the mounting of the fastener 10 is completed.
[0064]
Therefore, in the third embodiment, the engagement between the protrusion 22 and the upper end of the oblique side portion 14 or the second vertical side portion 13 can be released substantially simultaneously with the completion of the setting of the fastener 10, and the engagement release There is no need to provide a separate step. On the other hand, the pushing force of the fastener 10 after the curved portion 24 comes into contact with the upper end corner of the sound insulating plate 4 is only required to deform the curved portion 24. Therefore, the mounting of the fastener 10 is significantly easier than in the first and second embodiments.
[0065]
Although only one protrusion 22 is provided at the distal end of the flexible portion 21, two protrusions 22 may be provided as in the first embodiment, and between the two protrusions 22. May have an extension portion 23. Further, the configuration may be the same as the various modifications of the first embodiment. Then, while the engagement portion 20 is provided on the second vertical side portion 13, an engagement receiving portion that engages with the engagement portion 20 may be provided on the first vertical side portion 12. A flexible portion is provided in the joint portion 20, and the flexible portion is brought into contact with the side surface when the sound insulating plate 4 and the U-shaped groove 3 are inserted into a gap between the side surface on the side opposite to the automobile road and the like. The engagement between the engagement portion 20 and the engagement receiving portion may be released substantially simultaneously with the completion of the attachment of the fastener 10 to the gap.
[0066]
Further, as shown in FIG. 24, the fastener 10 having no attachment side portion 11 may be provided without the attachment side portion 11, as shown in FIG. It is preferable to mount it in the gap between the lower end of the plate 4 and the side surface of the U-shaped groove 3 opposite to the motorway. With this arrangement, not only the upper end but also the lower end of the lowermost sound insulating plate 4 having no projection 4b is pressed toward the motorway, and the lowermost sound insulating plate 4 is securely held. Can be done.
[0067]
【The invention's effect】
As explained above,According to the soundproofing plate fastener of the soundproof wall of the present invention,Even workers with low strength can easily attach the fastener with simple work, it is safe and excellent in workability, and loud noises are generated at the time of installation work, and the fastener is broken. Scattering can be prevented.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a soundproof wall provided with a sound insulating plate fastener according to Embodiment 1 of the present invention.
FIG. 2 is a sectional view taken along line II-II of FIG.
FIG. 3 is a perspective view showing details of a sound insulating plate fastener.
FIG. 4 is a side view of a sound insulating plate fastener.
FIG. 5 is a diagram corresponding to FIG. 3, showing a state in which an engagement portion and an upper end of a second vertical side are engaged.
FIG. 6 is an enlarged view of a main part of FIG. 1, showing an initial state of mounting of the sound insulating plate fastener.
FIG. 7 is a diagram corresponding to FIG. 6, illustrating a state in which the sound insulating plate fastener is being mounted.
FIG. 8 is a view corresponding to FIG. 6, showing a state where the mounting of the sound insulating plate fastener is completed.
FIG. 9 is a view corresponding to FIG. 3, showing a modified example of the engaging portion of the sound insulating plate fastener.
FIG. 10 is a diagram corresponding to FIG. 3, showing a further modified example of the engaging portion of the sound insulating plate fastener.
FIG. 11 is a diagram corresponding to FIG. 3, showing a further modified example of the engaging portion of the sound insulating plate fastener.
FIG. 12 is a view corresponding to FIG. 3, showing a further modified example of the engaging portion of the sound insulating plate fastener.
FIG. 13 is a diagram corresponding to FIG. 3, showing the second embodiment.
FIG. 14 is a diagram corresponding to FIG. 4, showing the second embodiment.
FIG. 15 is a view corresponding to FIG. 8 showing the second embodiment.
FIG. 16 is a diagram corresponding to FIG. 13 showing a modified example of the engaging portion of the sound insulating plate fastener.
FIG. 17 is a diagram corresponding to FIG. 13 showing a further modified example of the engaging portion of the sound insulating plate fastener and an engaging notch;
FIG. 18 is a diagram corresponding to FIG. 13 showing a further modified example of the engagement portion of the sound insulating plate fastener.
FIG. 19 is a diagram corresponding to FIG. 13 showing a further modified example of the engaging portion of the sound insulating plate fastener and a passage hole.
FIG. 20 is a view corresponding to FIG. 13 showing a further modified example of the engaging portion of the sound insulating plate fastener and a notch for passage.
FIG. 21 is a diagram corresponding to FIG. 14, showing a modification in which an engagement portion of a sound insulating plate fastener is provided on a connection side portion.
FIG. 22 is a view corresponding to FIG. 4, showing the third embodiment.
FIG. 23 is an enlarged cross-sectional view of a main part showing a state where the sound insulation plate fastener according to the third embodiment is being mounted.
FIG. 24 is a perspective view of a sound insulating plate fastener showing a modification of the third embodiment.
FIG. 25 is a cross-sectional view of the soundproof wall showing a state in which the sound insulating plate fastener of FIG. 24 is mounted in a gap between a lower end portion of the sound insulating plate located at the lowermost position and a side surface of the U-shaped groove in cross section.
[Explanation of symbols]
1 Soundproof wall
2 props
3 U-shaped section
4 Sound insulation board
10 Sound insulation plate fasteners
12 First vertical part
13 Second vertical part
16 Connecting edge
17 Upper part
18 Lower part
20, 30 engaging portion (engaging means)
21, 31 Flexible part
22, 32 protrusion
23, 33 extension
24 Curved section
36 Engagement hole
37 Notch for engagement

Claims (10)

所定間隔をあけて立設された複数の支柱と、該相隣接する一対の支柱の対向面に形成され、該支柱の長さ方向に延びる断面コ字状溝と、該相対向する断面コ字状溝間に嵌め込まれ、該断面コ字状溝の溝幅よりも厚みが小さく設定された遮音板とを備えた防音壁において、上記遮音板と断面コ字状溝における一方の側面との隙間に装着され、弾性復元力により該遮音板を断面コ字状溝の他方の側面に押圧する板バネ式の遮音板留め金具であって、
略上下方向に延び、上記隙間に装着されたときに、厚み方向の一方の面が上記遮音板の厚み方向における該隙間側の面に当接する第１の縦辺部と、
上記第１の縦辺部と対向しかつ該第１の縦辺部との水平距離が上側に向かって大きくなるように略上下方向に延び、下端部が上記第１の縦辺部の下端部に接続され、上記隙間に装着されたときに、厚み方向における第１の縦辺部と反対側面の上端部が上記断面コ字状溝の一方の側面に当接する第２の縦辺部と、
上記第１の縦辺部に設けられ、上記第２の縦辺部の上端部に対して係脱自在な係合部とを備え、
上記係合部は、基端部が上記第１の縦辺部に接続されかつ該基端部から上側に延びて先端部が第１の縦辺部の厚み方向に撓むことが可能な片持ちはり状の可撓部と、該可撓部の先端部に上記第２の縦辺部側に突出するように形成されかつ第２の縦辺部の上端部に対して上側を覆うように係合する突起部とからなり、
上記係合部と第２の縦辺部の上端部とが係合しているときに、上記第１及び第２の縦辺部の上端部間の水平距離が非係合時よりも小さくなるように構成されていることを特徴とする防音壁の遮音板留め金具。A plurality of struts erected at a predetermined interval, a U-shaped groove formed in the opposing surface of the pair of adjacent struts, and extending in the longitudinal direction of the struts; Between the sound insulation plate and one side surface of the U-shaped groove in the sound insulation wall, the sound insulation wall being fitted between the groove and having a thickness smaller than the groove width of the U-shaped groove. A leaf spring-type sound insulating plate fastener for pressing the sound insulating plate against the other side surface of the U-shaped groove by elastic restoring force,
A first vertical side portion that extends substantially in the up-down direction and, when mounted in the gap, one surface in the thickness direction abuts the surface on the gap side in the thickness direction of the sound insulating plate;
A lower end portion of the first vertical side portion extends in a substantially vertical direction so as to face the first vertical side portion and to increase a horizontal distance with the first vertical side portion upward. And a second vertical side portion having an upper end portion on the side opposite to the first vertical side portion in the thickness direction abutting on one side surface of the U-shaped groove when mounted in the gap,
An engaging portion provided on the first vertical side portion and capable of being disengaged from an upper end portion of the second vertical side portion;
The engagement portion has a base end portion connected to the first vertical side portion and extending upward from the base end portion, and a distal end portion capable of bending in a thickness direction of the first vertical side portion. A beam-shaped flexible portion, and formed at the distal end of the flexible portion so as to protrude toward the second vertical side and to cover the upper side of the upper end of the second vertical side. Consisting of a projection that engages,
When the engaging portion and the upper end of the second vertical side are engaged, the horizontal distance between the upper ends of the first and second vertical sides is smaller than when disengaging. A sound-insulating plate fastener for a sound-insulating wall, which is configured as described above. 請求項１記載の防音壁の遮音板留め金具において、
２つの突起部が、第１の縦辺部の幅方向に所定間隔をあけて設けられ、
上記両突起部間における可撓部の先端部に、略上下方向に延びる延設部が形成されていることを特徴とする防音壁の遮音板留め金具。The sound insulating plate fastener of the soundproof wall according to claim 1 ,
Two projections are provided at a predetermined interval in the width direction of the first vertical side,
A sound-insulating plate fastener for a sound-insulating wall, wherein an extended portion extending in a substantially vertical direction is formed at a distal end portion of the flexible portion between the projections. 請求項１記載の防音壁の遮音板留め金具において、
可撓部の上下方向中間部に、第１の縦辺部の厚み方向における第２の縦辺部と反対側面に対して第２の縦辺部と反対側に突出した状態で湾曲してなる湾曲部が形成され、
係合部と上記第２の縦辺部の上端部とが係合しているときに、該第２の縦辺部の上端部と上記湾曲部との間の水平距離が、遮音板と断面コ字状溝における一方の側面との隙間量よりも大きく設定されていることを特徴とする防音壁の遮音板留め金具。The sound insulating plate fastener of the soundproof wall according to claim 1 ,
The flexible portion is curved at the middle portion in the vertical direction so as to protrude from the side opposite to the second vertical side in the thickness direction of the first vertical side toward the side opposite to the second vertical side. A curved part is formed,
When the engaging portion and the upper end of the second vertical side are engaged, the horizontal distance between the upper end of the second vertical side and the curved portion is equal to the sound insulating plate and the cross section. A sound-insulating plate fastener for a sound-insulating wall, the gap being set to be larger than the gap between one side surface of the U-shaped groove. 所定間隔をあけて立設された複数の支柱と、該相隣接する一対の支柱の対向面に形成され、該支柱の長さ方向に延びる断面コ字状溝と、該相対向する断面コ字状溝間に嵌め込まれ、該断面コ字状溝の溝幅よりも厚みが小さく設定された遮音板とを備えた防音壁において、上記遮音板と断面コ字状溝における一方の側面との隙間に装着され、弾性復元力により該遮音板を断面コ字状溝の他方の側面に押圧する板バネ式の遮音板留め金具であって、
略上下方向に延び、上記隙間に装着されたときに、厚み方向の一方の面が上記遮音板の厚み方向における該隙間側の面に当接する第１の縦辺部と、
上記第１の縦辺部と対向しかつ該第１の縦辺部との水平距離が上側に向かって大きくなるように略上下方向に延び、上記隙間に装着されたときに、厚み方向における第１の縦辺部と反対側面の上端部が上記断面コ字状溝の一方の側面に当接する第２の縦辺部と、
両端部が上記第１及び第２の縦辺部の下端部にそれぞれ接続され、該両端部間の長さが上記隙間よりも小さく設定された連結辺部と、
上記第２の縦辺部の上端部に接続され、該上端部から上記第１の縦辺部側に向かって延び、一部に係合用孔又は係合用切欠きを有する上辺部と、
上記上辺部の第１の縦辺部側端部に接続され、該端部から上記第２の縦辺部側でかつ下側に向かって延びる下辺部と、
上記第２の縦辺部に設けられ、上記上辺部の係合用孔又は係合用切欠きに対して係脱自在な係合部とを備え、
上記係合部と上辺部の係合用孔又は係合用切欠きとが係合しているときに、該上辺部の第１の縦辺部側端部と第２の縦辺部との間における該第２の縦辺部の厚み方向に沿った距離が非係合時よりも小さくなるように構成されていることを特徴とする防音壁の遮音板留め金具。A plurality of struts erected at a predetermined interval, a U-shaped groove formed in the opposing surface of the pair of adjacent struts, and extending in the longitudinal direction of the struts; Between the sound insulation plate and one side surface of the U-shaped groove in the sound insulation wall, the sound insulation wall being fitted between the groove and having a thickness smaller than the groove width of the U-shaped groove. A leaf spring-type sound insulating plate fastener for pressing the sound insulating plate against the other side surface of the U-shaped groove by elastic restoring force,
A first vertical side portion that extends substantially in the up-down direction and, when mounted in the gap, one surface in the thickness direction abuts the surface on the gap side in the thickness direction of the sound insulating plate;
It extends substantially vertically so as to face the first vertical side portion and to increase the horizontal distance from the first vertical side portion toward the upper side. A second vertical side in which an upper end of the side opposite to the vertical side of the first abuts against one side of the U-shaped groove;
Both ends are connected to the lower ends of the first and second vertical sides, respectively, and a connection side part in which the length between the both ends is set smaller than the gap;
An upper side connected to an upper end of the second vertical side, extending from the upper end toward the first vertical side, and partially having an engagement hole or an engagement notch;
A lower side connected to the first vertical side end of the upper side and extending downward from the end toward the second vertical side;
An engagement portion provided on the second vertical side portion, the engagement portion being detachable from an engagement hole or an engagement notch of the upper side portion,
When the engagement portion is engaged with the engagement hole or engagement notch in the upper side, the gap between the first vertical side end of the upper side and the second vertical side is formed. A sound insulation plate fastener for a soundproof wall, wherein a distance along a thickness direction of the second vertical side portion is configured to be smaller than that in a non-engagement state. 請求項４記載の防音壁の遮音板留め金具において、
係合部は、基端部が第２の縦辺部に接続されかつ該基端部から上側に延びて先端部が第２の縦辺部の厚み方向に撓むことが可能な片持ちはり状の可撓部と、該可撓部の先端部に第１の縦辺部と反対側に突出するように形成されかつ上辺部の係合用孔又は係合用切欠きの第２の縦辺部側縁部と係合する突起部とからなることを特徴とする防音壁の遮音板留め金具。The sound insulating plate fastener of the soundproof wall according to claim 4 ,
The engaging portion has a base end connected to the second vertical side and extends upward from the base end so that the front end can bend in the thickness direction of the second vertical side. And a second vertical side of an engaging hole or notch for an upper side formed at a distal end of the flexible portion so as to protrude in a direction opposite to the first vertical side. A sound-insulating plate fastener for a sound-insulating wall, comprising a side edge and a projection engaging with the side edge. 請求項５記載の防音壁の遮音板留め金具において、
２つの突起部が、第２の縦辺部の幅方向に所定間隔をあけて設けられ、
上記両突起部間における可撓部の先端部に、略上下方向に延びる延設部が形成されていることを特徴とする防音壁の遮音板留め金具。The sound insulating plate fastener of the soundproof wall according to claim 5 ,
Two projections are provided at a predetermined interval in the width direction of the second vertical side,
A sound-insulating plate fastener for a sound-insulating wall, wherein an extended portion extending in a substantially vertical direction is formed at a distal end portion of the flexible portion between the projections. 請求項４記載の防音壁の遮音板留め金具において、
係合部は、基端部が第２の縦辺部に接続されかつ該基端部から上側に延びて先端部が第２の縦辺部の厚み方向に撓むことが可能な片持ちはり状の可撓部と、該可撓部の先端部に第２の縦辺部の幅方向に突出するように形成され、上辺部の係合用孔又は係合用切欠きの該突出方向に対応する側の縁部と係合する突起部とからなることを特徴とする防音壁の遮音板留め金具。The sound insulating plate fastener of the soundproof wall according to claim 4 ,
The engaging portion has a base end connected to the second vertical side and extends upward from the base end so that the front end can bend in the thickness direction of the second vertical side. A flexible portion and a distal end portion of the flexible portion are formed so as to protrude in the width direction of the second vertical side portion, and correspond to the protruding direction of the engaging hole or the notch for engagement on the upper side portion. A sound-insulating plate fastener for a sound-insulating wall, comprising: a side edge and a projection that engages. 所定間隔をあけて立設された複数の支柱と、該相隣接する一対の支柱の対向面に形成され、該支柱の長さ方向に延びる断面コ字状溝と、該相対向する断面コ字状溝間に嵌め込まれ、該断面コ字状溝の溝幅よりも厚みが小さく設定された遮音板とを備えた防音壁において、上記遮音板と断面コ字状溝における一方の側面との隙間に装着され、弾性復元力により該遮音板を断面コ字状溝の他方の側面に押圧する板バネ式の遮音板留め金具であって、
略上下方向に延び、厚み方向の一方の面が上記遮音板の厚み方向における上記隙間側の面に当接する第１の縦辺部と、
上記第１の縦辺部と対向しかつ該第１の縦辺部との水平距離が上側に向かって大きくなるように略上下方向に延び、上記隙間に装着されたときに、厚み方向における第１の縦辺部と反対側面の上端部が上記断面コ字状溝の一方の側面に当接する第２の縦辺部と、
両端部が上記第１及び第２の縦辺部の下端部にそれぞれ接続され、該両端部間の長さが上記隙間よりも小さく設定された連結辺部と、
上記第２の縦辺部の上端部に接続され、該上端部から上記第１の縦辺部側に向かって延びる上辺部と、
上記上辺部の第１の縦辺部側端部に接続され、該端部から上記第２の縦辺部側でかつ下側に向かって延びる下辺部と、
上記連結辺部に設けられ、上記下辺部の第２の縦辺部側端部に対して係脱自在な係合部とを備え、
上記係合部と下辺部の第２の縦辺部側端部とが係合しているときに、上記上辺部の第１の縦辺部側端部と第２の縦辺部との間における該第２の縦辺部の厚み方向に沿った距離が非係合時よりも小さくなるように構成されていることを特徴とする防音壁の遮音板留め金具。A plurality of struts erected at a predetermined interval, a U-shaped groove formed in the opposing surface of the pair of adjacent struts, and extending in the longitudinal direction of the struts; Between the sound insulation plate and one side surface of the U-shaped groove in the sound insulation wall, the sound insulation wall being fitted between the groove and having a thickness smaller than the groove width of the U-shaped groove. A leaf spring-type sound insulating plate fastener for pressing the sound insulating plate against the other side surface of the U-shaped groove by elastic restoring force,
A first vertical side portion extending substantially in the vertical direction and having one surface in the thickness direction abutting on the surface on the gap side in the thickness direction of the sound insulating plate;
It extends substantially vertically so as to face the first vertical side portion and to increase the horizontal distance from the first vertical side portion toward the upper side. A second vertical side in which an upper end of the side opposite to the vertical side of the first abuts against one side of the U-shaped groove;
Both ends are connected to the lower ends of the first and second vertical sides, respectively, and a connection side part in which the length between the both ends is set smaller than the gap;
An upper side connected to an upper end of the second vertical side and extending from the upper end toward the first vertical side;
A lower side connected to the first vertical side end of the upper side and extending downward from the end toward the second vertical side;
An engagement portion provided on the connection side portion, the engagement portion being detachable with respect to a second vertical side end portion of the lower side portion,
When the engagement portion and the second vertical side end of the lower side are engaged, the upper side portion between the first vertical side end of the upper side and the second vertical side Wherein the distance along the thickness direction of the second vertical side portion is smaller than that at the time of non-engagement. 所定間隔をあけて立設された複数の支柱と、該相隣接する一対の支柱の対向面に形成され、該支柱の長さ方向に延びる断面コ字状溝と、該相対向する断面コ字状溝間に嵌め込まれ、該断面コ字状溝の溝幅よりも厚みが小さく設定された遮音板とを備えた防音壁において、上記遮音板と断面コ字状溝における一方の側面との隙間に装着され、弾性復元力により該遮音板を断面コ字状溝の他方の側面に押圧する板バネ式の遮音板留め金具であって、
略上下方向に延び、上記隙間に装着されたときに、厚み方向の一方の面が上記遮音板の厚み方向における該隙間側の面に当接する第１の縦辺部と、
上記第１の縦辺部と対向しかつ該第１の縦辺部との水平距離が上側に向かって大きくなるように略上下方向に延び、下端部が上記第１の縦辺部の下端部に接続され、上記隙間に装着されたときに、厚み方向における第１の縦辺部と反対側面の上端部が上記断面コ字状溝の一方の側面に当接する第２の縦辺部と、
上記第１の縦辺部と第２の縦辺部とを係合する係合手段とを備え、
上記係合手段は、上記第１及び第２の縦辺部のいずれか一方に形成された片持ちはり状の可撓部と、他方に形成されかつ該可撓部と係合する係合受部とからなり、
上記係合手段により第１及び第２の縦辺部同士が係合されているときに、該第１及び第２の縦辺部の上端部間の水平距離が非係合時よりも小さくなるように構成されていることを特徴とする防音壁の遮音板留め金具。A plurality of struts erected at a predetermined interval, a U-shaped groove formed in the opposing surface of the pair of adjacent struts, and extending in the longitudinal direction of the struts; Between the sound insulation plate and one side surface of the U-shaped groove in the sound insulation wall, the sound insulation wall being fitted between the groove and having a thickness smaller than the groove width of the U-shaped groove. A leaf spring-type sound insulating plate fastener for pressing the sound insulating plate against the other side surface of the U-shaped groove by elastic restoring force,
A first vertical side portion that extends substantially in the up-down direction and, when mounted in the gap, one surface in the thickness direction abuts the surface on the gap side in the thickness direction of the sound insulating plate;
A lower end portion of the first vertical side portion extends in a substantially vertical direction so as to face the first vertical side portion and to increase a horizontal distance with the first vertical side portion upward. And a second vertical side portion having an upper end portion on the side opposite to the first vertical side portion in the thickness direction abutting on one side surface of the U-shaped groove when mounted in the gap,
An engaging means for engaging the first vertical side portion and the second vertical side portion,
The engaging means includes a cantilever-shaped flexible portion formed on one of the first and second vertical sides, and an engagement receiving member formed on the other and engaged with the flexible portion. Department and
When the first and second vertical sides are engaged with each other by the engaging means, the horizontal distance between the upper ends of the first and second vertical sides becomes smaller than when the first and second vertical sides are not engaged. A sound-insulating plate fastener for a sound-insulating wall, which is configured as described above. 遮音板と断面コ字状溝における一方の側面との隙間への装着完了と略同時に、係合手段による第１の縦辺部と第２の縦辺部との係合が解除されるように構成されていることを特徴とする請求項９記載の防音壁の遮音板留め金具。At about the same time as the mounting of the sound insulating plate and the one side surface of the U-shaped groove in the gap is completed, the engagement between the first vertical side portion and the second vertical side portion by the engagement means is released. The sound insulation plate fastener for a soundproof wall according to claim 9, which is configured.
JP29085699A 1999-05-11 1999-10-13 Sound insulation plate fasteners for soundproof walls Expired - Fee Related JP3556544B2 (en)

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