【０００１】
【産業上の利用分野】
本発明は，フェンス，門扉，面格子，手摺等において横桟又は縦桟の基桟に対して，縦小桟，横小桟又は端枠桟の交差桟を固定するに用いるフェンス等の桟固定装置に関する。
【０００２】
【従来の技術】
この種フェンス等の桟固定装置として，基桟の起立フインに，その全高さに亘るように切欠加工を施して配設した一対の切欠溝に，交差桟の両側面に突出して配設した各一対の対向壁による又はこれらを有してなる係合突条をそれぞれ圧入し切欠溝縁部を係合突条の対向壁間に挾持するとともに，例えばパンチングによる抜止手段を施すことにより基桟に対して交差桟を起立フイン跨設状に固定した桟固定装置が，例えば実開昭５９−１３８６７０号，実開昭５９−１９４４５６号，実開昭６２−１８７１６６号等によって提案されている。
【０００３】
【発明が解決しようとする課題】
これらは，基桟に対する交差桟の圧入工程と，抜止手段のための，例えばパンチング工程によって簡易にして効率的な桟固定をなし得るものであるが，一対の切欠溝は，起立フインの全高さに亘るものであるから，起立フインが該切欠溝位置で長手方向に分断されることになる一方，基桟に対する交差桟の固定は，専ら係合突条における一対の対向壁による切欠溝縁部の挾持と抜止手段に依存するものとされるので，固定強度の確保において不安を残し，必ずしも充分に満足し得るものとは断定し難い。
【０００４】
特に基桟，交差桟をアルミ押出材によって構成するも，その肉厚を薄肉化したり，アルミ押出材以外の金属薄板材を用いて構成したりするに際しては，起立フインや一対の対向壁の強度が相対的に低下する可能性もあるから，固定強度の確保が困難となる可能性が残る。
【０００５】
本発明はかかる事情に鑑みてなされたもので，その解決課題とする処は，上記簡易にして効率的な桟固定をなし得るメリットを維持する一方で固定強度を大きく向上し得るフェンス等の桟固定装置を提案するにある。
【０００６】
【課題を解決するための手段】
上記の課題に添い，本発明は基桟に対する交差桟の固定を，係合突条における一対の対向壁による切欠溝縁部の挾持と抜止手段に加えて，一対の対向壁による挾持を切欠溝下位，即ち交差桟圧入方向の起立フイン残存部位においても行うものとするとともに該起立フイン残存部位の挾持を，交差桟圧入によって自動的に行うように，切欠溝に破断用カッターを設ける一方，係合突条における一対の対向壁間に被破断壁を設け，交差桟圧入圧による被破断壁の自己破断性（自己カット性）によって行うものとし，これによって起立フインの分断を防止し，起立フイン強度を向上するとともにこの起立フイン残存部位における挾持強度を得て，固定強度を確保するようにしたものであって，即ち本発明は，請求項１を，基桟の起立フインに切欠加工を施して配設した一対の切欠溝に，交差桟の両側面に突出して配設した各一対の対向壁を有してなる係合突条をそれぞれ圧入し切欠溝縁部を係合突条の対向壁間に挾持するとともに抜止手段を施すことにより基桟に対して交差桟を起立フイン跨設状に固定した桟固定装置であって，上記起立フインの切欠溝が，該起立フイン高さの中間位置に至るように，切欠開口と該切欠開口に連続する起立フイン長手方向一方偏位の拡幅部とを備えるとともに該拡幅部の切欠開口下方に拡幅部切欠加工の切欠端縁による傾斜乃至径大湾曲の破断用カッターを備えてなり，上記交差桟の係合突条が，上記一対の対向壁間に破断可能に設置した被破断壁を備えてなり，交差桟係合突条の上記圧入時に，上記切欠溝の破断用カッターによりこれに衝接交差する被破断壁を部分的に破断し，該破断部位における一対の残存対向壁によって切欠溝下位の起立フイン残存部位を挾持してなることを特徴とするフェンス等の桟固定装置とし，請求項２を，更に被破断壁の破断と残存対向壁による挾持を確実化するように，請求項１の起立フインの切欠溝を，拡幅部の下端を湾曲した４分音符状又はその類似形状とし，該拡幅部の湾曲部位を，被破断壁の破断部を拡幅部内に湾曲乃至巻込状に誘導する破断ガイドとしてなることを特徴とするフェンス等の桟固定装置とし，請求項３を，同じく更に被破断壁の破断と残存対向壁による挾持を確実化するように，請求項１又は２の破断用カッターに，切欠開口から該破断用カッターに至る傾斜ガイドを追加的に設置してなることを特徴とするフェンス等の桟固定装置とし，請求項４を，更に交差桟固定部位の外観を良好なものとするように，請求項１乃至３のいずれかの切欠溝における拡幅部を，起立フイン長手方向内側に対向するように偏位し，係合突条における被破断壁を一対の対向壁突出方向中間位置に設置し，抜止手段を対向壁の被破断壁内側部位において拡幅部内に膨出又は突出したパンチングによるものとしてなることを特徴とするフェンス等の桟固定装置とし，請求項５を，更に上記被破断壁の破断と残存対向壁による挾持を確実化する一方，アルミ薄板材を用いることによる桟の材質転換を図って固定強度を確保したものとするように，請求項１乃至４のいずれかの交差桟を，アルミ薄板材をロールフォーミングして中空部に発泡樹脂を充填してなる薄板成形材製とし，その被破断壁を上記アルミ薄板により破断可能としてなることを特徴とするフェンス等の桟固定装置とし，これらをそれぞれ発明の要旨として上記課題解決の手段としたものである。
【０００７】
【実施例】
以下実施例を示す図面に従って本発明を更に具体的に説明すれば，図１乃至図８においてＡはアルミ製のフェンス，１はその上下一対の横桟による基桟，２は該基桟１にそれぞれ長手方向端部を固定してこれら基桟１間に配設した多数の縦桟による交差桟を示す。
【０００８】
基桟１及び交差桟２は，本例にあってそれぞれアルミ薄板材をロールフォーミングして中空部に発泡樹脂３を充填してなる薄板成形材製としてあり，上記基桟１と交差桟２とは，基桟１の起立フイン１０に切欠加工を施して配設した一対の切欠溝１１に，交差桟２の両側面に突出して配設した各一対の対向壁２１を有してなる係合突条２０をそれぞれ圧入し切欠溝１１縁部を係合突条２０の対向壁２１間に挾持するとともに抜止手段３０を施すことにより基桟１に対して交差桟２を起立フイン跨設状に固定したものとするとともに，上記起立フイン１０の切欠溝１１が，該起立フイン１０高さの中間位置に至るように，切欠開口１２と該切欠開口１２に連続する起立フイン１０長手方向一方偏位の拡幅部１３とを備えるとともに該拡幅部１３の切欠開口１２下方に拡幅部１３切欠加工の切欠端縁による傾斜の破断用カッター１５を備えてなり，上記交差桟２の係合突条２０が，上記一対の対向壁２１間に破断可能に設置した被破断壁２３を備えてなり，交差桟２係合突条２０の上記圧入時に，上記切欠溝１１の破断用カッター１５によりこれに衝接交差する被破断壁２３を部分的に破断し，該破断部位における一対の残存対向壁２１によって切欠溝１１下方の起立フイン１０残存部位を挾持してなるものとしてある。
【０００９】
このとき本例にあって交差桟２の被破断壁２３は，交差桟２を薄板成形材製としたことにより，これを同じく上記アルミ薄板により破断可能となるものとし，一方，上記起立フイン１０の切欠溝１１は，これを拡幅部１３の下端を湾曲した４分音符状の形状とし，該拡幅部１３の湾曲部位を，被破断壁２３の破断部２４を拡幅部１３内に湾曲状に誘導する破断ガイド１６とし，上記破断用カッター１５には，これに切欠開口１２から該破断用カッター１５に至る傾斜ガイド１４を設置したものとし，また上記切欠溝１１における拡幅部１３を，起立フイン１０長手方向内側に対向するように偏位し，係合突条２０における被破断壁２３を一対の対向壁２１突出方向中間位置に設置し，抜止手段３０を対向壁２１の被破断壁２３内側部位において拡幅部１３内に膨出又は突出したパンチングによるものとしてある。
【００１０】
即ち本例にあって基桟１及び交差桟２は，アルミ押出材として用いられるＪＩＳＡ−６０６３Ｔ５材に比して機械的強度が向上したＪＩＳＡ−３００４Ｈ３６アルミ薄板材を用い，基桟１は，０．５ｍｍ厚のアルミ薄板材により，起立フイン１０部位において端縁を折曲接合するようにロールフォーミングを施して横桟として用いるに好適なバー材とし，また交差桟２は，０．３ｍｍ厚のアルミ薄板材により一側面における係合突条２０部位において同じく端縁を折曲接合するようにロールフォーミングを施して幅広パネル状の縦桟として用いるに好適なパネル材とするとともに，いずれもロールフォーミングの最終段階接合前に接合端縁側の残余開口から，例えばウレタン発泡樹脂を注入し，上記発泡樹脂の充填を，アルミ薄板材と全面接着してその中空部を埋める，例えば１８倍の発泡充填によって行ったものとしてある。
【００１１】
このとき基桟１にあって起立フイン１０は，上記アルミ薄板材を，例えば３重に重合折曲した１．５ｍｍ厚の厚さを有する剛性強度を向上確保したものとし，基桟１の平面の基壁中央位置に，例えば１２ｍｍの高さに垂直に起立したものとしてある。
【００１２】
起立フイン１０の４分音符状の形状とした一対の切欠溝１１は，各拡幅部１３が内側対向し，該一対の切欠溝１１間に突片１８を区画設置するように，起立フイン１０長手方向に交差桟２の本数に対応した対数配設してあり，それぞれ上記起立フイン１０の高さ１２ｍｍに対して，その中間位置に至る，例えば１０ｍｍの深さにして，起立フイン１０に２ｍｍ高さにしてリブ状の残存部位を残すように，プレスによる切欠加工によって設けたものとしてあり，該切欠加工による上記１．５ｍｍ厚の切欠端縁（切欠エッジ）で，切欠開口１２から所定角度，例えば１０°程度にして９．７°に一連に傾斜した傾斜ガイド１４とこれに続く破断用カッター１５を備えたものとし，また破断用カッター１５に続いて半径１．４ｍｍの，拡幅部１３の湾曲部位による湾曲ガイドとしての破断ガイド１６を，更に該破断ガイド１６の他端側を垂直とし，その上端に切欠開口１２に向いこれに至る係止部１７を備えたものとしてある。因みに本例の切欠溝１１における切欠開口１２から係止部１７，即ち拡幅部１３上端までは３ｍｍ，拡幅部１３最大深さは７ｍｍ，破断ガイド１６及び係止部１７幅は同一の２ｍｍである。
【００１３】
交差桟２にあって係合突条２０は，上記アルミ薄板材を先端側において２重に重合折曲して０．６ｍｍ厚の厚さに剛性強度を向上確保し，後端側で単一に用いて発泡充填のウレタン樹脂を受入れ可能としてその剛性強度を確保した一対の対向壁２１とする一方，重合折曲側先端を対向壁２１を中間で連結し，本例において係合突条２０をＨ字状とするように繋ぎ，単一，即ち０．３ｍｍ厚のアルミ薄板材よる中間壁の薄肉ブリッジとした被破断壁２３を備えて，交差桟２の両側面の基壁中央位置に，それぞれ対向壁２１間隔を１．５ｍｍにして，５ｍｍの突出幅に垂直に突出したものとしてある。
【００１４】
このように形成した基桟１の破断用カッター１５は，切欠溝１１に対する係合突条２０圧入時の交差桟圧入圧によってその被破断壁２３を，長手方向先端からこれに衝接交差する長さの範囲に亘って部分的に破断（カット）する，被破断壁２３に自己破断性（自己カット性）を付与するものとなり，また被破断壁２３の破断部位における一対の残存対向壁２１が，切欠溝１１縁部の対向壁２１間挾持に加えて，更に起立フイン１０残存部位を，長手方向先端側で挾持したものとなる。
【００１５】
即ち基桟１に対して交差桟２を起立フイン跨設状に固定するために，交差桟２の係合突条２０を起立フイン１０の一対の切欠溝１１に圧入すると，係合突条２０は，切欠溝１１縁部を挾持状にするとともに被破断壁２３が該切欠溝１１内に入り込むように切欠溝１１に挿入係合し，被破断壁２３は交差桟圧入圧をその長手方向に受け乍ら切欠開口１２から傾斜ガイド１４に案内されるように切欠溝１１内に進行し，切欠開口１２の開口幅を画する突片１８側の切欠縁部，即ち突片１８における拡幅部１３上の張出突部１９の規制下で，両側の被破断壁２３が各破断用カッター１５に交差状に衝接した状態となるとともになお長手方向の圧入圧を受けるため，結局被破断壁２３はこの圧入圧に抗し切れずに，一対の対向壁２１間でその先端において破断し，該破断は，圧入圧を受け続けることにより，破断用カッター１５に被破断壁２３が交差する長さの範囲，即ち交差桟２の長手方向先端が基桟１の平面の基壁に突合て状となるまでに交差する長さの範囲に亘るように生じるに至る。
【００１６】
このとき本例にあっては，被破断壁２３の破断先端は，切欠溝１１の湾曲部位による破断ガイド１６に案内されるから，被破断壁２３の破断部２４は拡幅部１３内に湾曲乃至巻込状に誘導され，また破断部位における一対の残存対向壁２１は，破断用カッター１５の厚さ，即ち起立フイン１０の厚さ間隔となって，該起立フイン１０の残存部位を強圧状に挾持するに至る。
【００１７】
抜止手段３０は，切欠溝１１に対する係合突条２０の圧入状態において，その抜止めを行い，固定をより確実とするために，パンチングを施すことによって行ってあり，このパンチングは，一対の対向壁２１における被破断壁２３の内側部位，即ち一対の対向壁２１の後端側部位においてこれを施し，上記破断部２４を湾曲乃至差込状に誘導して納めた拡幅部１３に対して膨出又は突出し，その係止部１７に係止するように行ったものとしてある。
【００１８】
本例のフェンスＡは，例えば一対の基桟１を対向設置するとともに，所定間隔に交差桟２をこれらの間に配置し，基桟１を強圧することによって交差桟２長手方向両端を一対の基桟１に同時圧入した上，パンチングを施すことによって構成することができ，このとき交差桟２は発泡樹脂を充填したものであるが，密度を低下した発泡状態によって，圧入に際して該発泡樹脂は抉り取られ又は破断され易いため障害となることはないが，本例にあっては交差桟２の上記突片１８の受入れ嵌挿によるふくれを防止する上で，交差桟２の長手方向端部を，例えば振動カッター，円形カッター等で半円状，矩形状等に除去して，突片１８受入用にして突片１８厚さの樹脂除去部４を予め設置したものを用いたものとしてある。
【００１９】
本例における基桟１と交差桟２とは，交差桟２長手方向端部が突片１８を受入れて起立フイン１０に跨設状となり，係合突条２０における一対の対向壁２１間先端側及び後端側の切欠溝１１両縁部の挾持強度とともに残存対向壁２１の起立フイン１０残存部位の突出幅に応じた挾持強度が得られる上，起立フイン１０の分断を防止した強度向上と相俟って，交差桟２を強固に固定する接合強度を得られることになり，抜止手段３０を施した状態で，交差桟２の固定は，６０ｋｇ／本の引抜に耐える固定強度を備えたものであった。
【００２０】
なお図中２２は一対の対向壁２１による切欠溝１１縁部挟着用の受溝である。
【００２１】
図９以下は他の例を示したものであり，図９及び図１０は，起立フイン１０の切欠溝１１における拡幅部１３を，起立フイン１０長手方向外側に向うように偏位し，拡幅部１３の下端を傾斜する一方，傾斜ガイド１４の設置を省略した４分音符類似形状乃至斧形状とし，該拡幅部１３の傾斜部位を，被破断壁２３の破断部２４を破断する自己カール性によって拡幅部１３内外方に誘導する破断ガイド１６とし，また抜止手段３０を一対の対向壁２１の被破断壁２３外側部位，即ち先端側の部位において拡幅部１３内に切欠き突出したプレス切欠によるものとした例，図１１は，拡幅部１３の破断ガイド１６を，被破断壁２３の破断部２４を巻込状に拡幅部１３に誘導するように，拡幅部１３の湾曲部位をＣ字状に切欠加工し，湾曲部位上方に巻込端１６′を設置して，切欠溝１１を４分音符類似形状とした例，図１２は，拡幅部１３の破断ガイド１６を，被破断壁２３の破断部２４を湾曲状乃至屈曲状にしてこれを受入れるように破断ガイド１６を拡幅部１３下方に溝状に区画設置し，この場合破断ガイド１６に対して破断部２４が入り易いように，その破断時の自己カール性を抑制し，破断が緩やかに行われるように破断用カッター１５を径大湾曲の湾曲状とした例であり，いずれも固定強度を同様に向上確保するものであるが，これらにおけるその余は前記例と同様に構成したものとしてあるので，同一符号を付してその説明を省略する。
【００２２】
図示した例は以上のとおりとしたが，本発明の実施に当っては，切欠溝において上記傾斜ガイド及び破断ガイドを可及的に短寸化し又は省略すること，係合突条における被破断壁を一対の対向壁の後端位置に設けて，これをコ字状をなすように構成し，対向壁による挾持を切欠溝の一側縁部とすること，基桟，交差桟の一方又は双方を，中空のアルミ押出材製とし，発泡樹脂を挿入充填又は充填発泡等によって充填した上記アルミ薄板材以外の金属薄板材製とし，交差桟において一対の対向壁間被破断壁の破断を可能とし又は破断を容易化するために，必要に応じて破断位置を薄肉化するＶ字溝を刻設したものとすること，一対の切欠溝間に区画設置し，交差桟に受入れ嵌挿する上記突片に代えて，各切欠溝を画する棒状の細幅突起を用い，特に発泡樹脂充填の交差桟に差込み挿入するようにしてそのふくれを防止するようにすること，抜止手段を一対の対向壁の片側において施すものとすること，枠体を構成し，又はフェンス以外に門扉，面格子，手摺等の桟組体を構成するように本発明を用いること，このとき基桟を縦桟とし，交差桟を横桟や端枠桟として用いることが可能であり，これらを含め本発明において，基桟，起立フイン，切欠溝，破断用カッター，交差桟，係合突条，被破断壁，抜止手段，必要に応じて設置する破断ガイド，傾斜ガイド等の各具体的材質，形状，構造，寸法，数，これらの関係，これらに対する付加等は様々に変更した態様のものとすることができる。
【００２３】
【発明の効果】
本発明は以上のとおりに構成したので，請求項１は，係合突条における一対の対向壁による切欠溝縁部の挾持強度と，抜止手段に加えて，残存対向壁の，分断を防止してそれ自体強度を向上した起立フイン残存部位の挾持強度を得られ，基桟に対する交差桟の固定強度を大きく向上して，充分な固定強度を確保する一方，上記残存対向壁による起立フイン残存部位の挾持は，切欠溝の破断用カッターに対する被破断壁の衝接交差によって行う，即ち交差桟圧入圧による被破断壁の自己破断性によって行うものとしたから，基桟に対する交差桟の圧入と抜止手段を施すことにより，簡易にして効率的な桟固定をなし得るフェンス等の桟固定装置を提供することができる。
【００２４】
請求項２は，これに加えて，破断ガイドによって，被破断壁の破断時に破断部が巻込まれたりすることなく，これを拡幅部内に誘導し，被破断壁の破断と残存対向壁による挾持をより確実にすることができる。
【００２５】
請求項３は，同じくこれに加えて，傾斜ガイドによって，被破断壁を破断用カッターに適格に案内してその破断を促し，同じく被破断壁の破断と残存対向壁による挾持をより確実にすることができる。
【００２６】
請求項４は，同じくこれに加えて，パンチングによる抜止手段が対向壁の被破断壁内側部位に位置してこれが目立つことなく，交差桟固定部位の外観を良好なものとすることができる。
【００２７】
請求項５は，同じくこれに加えて，アルミ薄板の被破断壁により破断が確実にして容易化するから，被破断壁の破断と残存対向壁による挾持をより確実にする一方，アルミ薄板材を用いることによる桟の材質転換を図って固定強度を確保したものとすることができる。
【図面の簡単な説明】
【図１】フェンスの正面図
【図２】基桟と交差桟の固定部位を示す拡大正面図
【図３】図２Ａ−Ａ線横断面図
【図４】図２Ｂ−Ｂ線縦断面図
【図５】起立フインの拡大正面図
【図６】交差桟の拡大横断面図
【図７】切欠溝と係合突条との関係を示す拡大正面図
【図８】切欠溝と係合突条との関係を示す斜視図
【図９】他の例を示す拡大正面図
【図１０】他の例を示す拡大横断面図
【図１１】他の例を示す拡大正面図
【図１２】他の例を示す拡大正面図
【符号の説明】
Ａ フェンス
１ 基桟
２ 交差桟
３ 発泡樹脂
１０ 起立フイン
１１ 切欠溝
１２ 切欠開口
１３ 拡幅部
１４ 傾斜ガイド
１５ 破断用カッター
１６ 破断ガイド
２０ 係合突条
２１ 対向壁
２３ 被破断壁
２４ 破断部
３０ 抜止手段[0001]
[Industrial applications]
The present invention relates to a fence, gate or the like, a fence or the like used for fixing a cross bar of a vertical small bar, a horizontal small bar, or an end frame to a base bar of a horizontal bar or a vertical bar in a handrail or the like. Equipment related.
[0002]
[Prior art]
This type of fence or other beam fixing device is provided with a pair of notched grooves, which are cut out and provided on the upright fin of the base beam so as to cover the entire height thereof, and protrude from both sides of the crossing bar. The engaging ridges formed by or having a pair of opposing walls are respectively press-fitted, and the edge of the notch groove is clamped between the opposing walls of the engaging ridges. On the other hand, a beam fixing device in which a cross beam is fixed in a standing fin straddle shape has been proposed, for example, in Japanese Utility Model Laid-Open Nos. 59-138670, 59-194456, and 62-187166.
[0003]
[Problems to be solved by the invention]
Although these can be easily and efficiently fixed by a press-fitting process of the cross beam to the base beam and a punching process for the retaining means, for example, a pair of notched grooves is formed by the entire height of the standing fin. Therefore, the upright fin is cut off in the longitudinal direction at the position of the notch groove, while the fixing of the cross beam to the base beam is performed solely by the edge of the notch groove formed by the pair of opposing walls in the engaging ridge. Because it depends on the clamping and retaining means, it is difficult to secure a sufficient fixing strength, and it is difficult to say that it is not always satisfactory.
[0004]
In particular, when the base bar and the cross bar are made of extruded aluminum, the thickness of the standing fins and the pair of opposing walls must be reduced when the wall thickness is reduced or when a thin metal plate other than extruded aluminum is used. However, there is a possibility that it may be difficult to secure the fixing strength because there is a possibility that the fixing strength is relatively reduced.
[0005]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a solution to the problem is to maintain the advantage of simple and efficient fixing of a beam while maintaining the advantages of a beam such as a fence capable of greatly improving the fixing strength. The idea is to propose a fixing device.
[0006]
[Means for Solving the Problems]
According to the present invention, in addition to the above-mentioned object, the present invention provides a method of fixing a cross beam to a base beam by notching means of a pair of opposed walls of an engaging ridge and a means for preventing the notch from being removed. A cutting cutter is provided in the notch groove so that the standing fins in the lower part, that is, the remaining portions of the standing fins in the direction of press-fitting the cross beam are automatically held by the press-fitting of the cross beam. A rupturable wall is provided between a pair of opposing walls in the ridge, and the self-rupturing property (self-cutting property) of the rupturable wall due to the cross beam press-in pressure is used to prevent the splitting of the erecting fin. In addition to improving the strength, the fixing strength is secured by obtaining the holding strength at the remaining portion of the standing fin. The engaging ridges having a pair of opposing walls protruding from both sides of the cross bar are press-fitted into the pair of notched grooves provided by applying pressure, and the edges of the notched grooves are engaged with the engaging ridges. A crossing bar is fixed to the base bar so as to straddle an upright fin by applying a retaining means between the opposed walls, and the notch groove of the upright fin has a height of the upright fin. A notch opening and a widened portion that is continuous with the notch opening and that is deviated in the longitudinal direction, and that is deviated by one end in the longitudinal direction. A breaking cutter having a large diameter, wherein the engaging ridge of the cross bar comprises a breakable wall disposed so as to be rupturable between the pair of opposed walls; At the time of press-fitting, it crosses this notch groove by the cutter for breaking. A beam fixing device for a fence or the like, characterized in that a broken wall is partially broken, and a pair of remaining opposing walls at the broken portion sandwich a portion of a standing fin below a notched groove. Further, the cut-out groove of the upright fin according to claim 1 is formed so that the lower end of the widened portion has a curved quarter-note shape or a similar shape so as to ensure the breakage of the breakable wall and the clamping by the remaining opposing wall. 4. A beam fixing device, such as a fence, characterized in that the curved portion is a breaking guide for guiding a broken portion of the wall to be broken into or bent into the widened portion. The cutting cutter according to claim 1 or 2 is further provided with an inclined guide extending from the notch opening to the cutting cutter so as to ensure the breaking of the cutting blade and the clamping by the remaining opposing wall. Beam fixing device such as fence In order to further improve the appearance of the cross bar fixing portion, the widened portion of the notch groove of any one of claims 1 to 3 is biased so as to face inward in the longitudinal direction of the standing fin. The breakable wall of the engaging ridge is located at a middle position between the pair of opposing walls in the projecting direction of the pair of opposing walls, and the retaining means is formed by punching which bulges or protrudes into the widened portion of the opposing wall inside the breakable wall. A fifth aspect of the present invention provides a beam fixing device for a fence or the like, further comprising: changing the material of the beam by using a thin aluminum plate material while ensuring the breakage of the wall to be broken and the holding by the remaining opposing wall. In order to secure the fixing strength, the crossing bar according to any one of claims 1 to 4 is made of a thin plate formed by roll forming an aluminum thin plate and filling a hollow portion with a foamed resin. Break wall up A crosspiece fixed device fences, etc., characterized by comprising a breakable by aluminum sheet is obtained by a means of the aforementioned problems solved as the gist of the invention.
[0007]
【Example】
The present invention will be described in more detail with reference to the drawings showing the embodiments. In FIGS. 1 to 8, A is an aluminum fence, 1 is a base bar having a pair of upper and lower horizontal bars, and 2 is a base bar. A cross bar composed of a number of vertical bars fixed at their longitudinal ends and disposed between the base bars 1 is shown.
[0008]
In the present embodiment, the base 1 and the cross 2 are made of a thin plate formed by rolling a thin aluminum plate and filling the hollow portion with the foamed resin 3. Is an engagement having a pair of notch grooves 11 formed by performing notch processing on the standing fin 10 of the base bar 1 and a pair of opposing walls 21 protruding and disposed on both side surfaces of the cross bar 2. Each of the ridges 20 is press-fitted, the edge of the notch groove 11 is clamped between the opposing walls 21 of the engagement ridges 20 and the retaining means 30 is provided, so that the cross bar 2 is erected over the base bar 1 in a standing fin configuration. In addition to being fixed, the notch groove 11 of the upright fin 10 reaches an intermediate position of the height of the upright fin 10, and the upright fin 10 which is continuous with the notch opening 12 is displaced in one longitudinal direction. And the widened portion 13 A cutting cutter 15 is provided below the notch opening 12 so as to be inclined by a notch edge of the widened portion 13. The engaging ridge 20 of the cross bar 2 is installed between the pair of opposed walls 21 so as to be breakable. When the cross bar 2 engaging ridge 20 is press-fitted, the rupturable wall 23 which abuts and intersects with the rupturable cutter 15 of the cutout groove 11 is partially broken. The remaining portion of the upright fin 10 below the cutout groove 11 is sandwiched by a pair of remaining opposing walls 21 at the broken portion.
[0009]
At this time, in the present example, the breakable wall 23 of the cross beam 2 is made to be breakable by the same aluminum thin plate because the cross beam 2 is made of a thin plate formed material. The notch groove 11 is formed in a quarter note shape in which the lower end of the widened portion 13 is curved, and the curved portion of the widened portion 13 is formed by bending the broken portion 24 of the breakable wall 23 into the widened portion 13. An inclining guide 14 extending from the notch opening 12 to the breaking cutter 15 is provided in the breaking cutter 15 to guide the breaking cutter 15, and the widened portion 13 in the notch groove 11 is provided with an upright fin. 10 is displaced so as to face inward in the longitudinal direction, the breakable wall 23 of the engaging ridge 20 is installed at an intermediate position in the protruding direction of the pair of opposing walls 21, and the retaining means 30 is positioned inside the breakable wall 23 of the opposing wall 21. In the site There as by bulging or protruding punching widened portion 13.
[0010]
That is, in this example, the base 1 and the cross 2 are made of a JISA-3004H36 aluminum sheet having improved mechanical strength as compared with JISA-6063T5 used as an aluminum extruded material. A bar material suitable for use as a horizontal bar is formed by performing roll forming with a thin aluminum plate having a thickness of 0.5 mm so that the edges are bent and joined at the 10 fins, and the cross bar 2 has a thickness of 0.3 mm. Roll forming is performed by using an aluminum thin plate material so that the edges are similarly bent and joined at 20 engaging ridges on one side to obtain a panel material suitable for use as a vertical panel having a wide panel shape. Before the final stage of joining, for example, urethane foam resin is injected from the remaining opening on the joining edge side, and the filling of the foam resin is carried out in full contact with the aluminum sheet material. To fill the hollow portion, for example, as being performed by the foam filling of 18 times.
[0011]
At this time, the upright fin 10 in the base 1 is made of the above-described aluminum thin plate, for example, a three-fold overlapped and bent 1.5 mm thick rigidity having improved rigidity. At a central position of the base wall, for example, vertically standing at a height of 12 mm.
[0012]
A pair of cut-out grooves 11 in the shape of a quarter note of the standing fin 10 are formed such that the widened portions 13 face each other inward, and a protruding piece 18 is partitioned between the pair of cut-out grooves 11 so as to be longitudinally arranged. In the direction, a logarithm corresponding to the number of the crossing bars 2 is provided. Each of the standing fins 10 has a height of 12 mm and reaches an intermediate position, for example, a depth of 10 mm. The 1.5 mm thick notch edge (notch edge) formed by the notch processing is provided at a predetermined angle from the notch opening 12. For example, it is provided with an inclined guide 14 which is successively inclined at about 9.7 ° to about 10 ° and a breaking cutter 15 following the same, and a 1.4 mm radius widening section 13 following the breaking cutter 15 is provided. bay A breaking guide 16 as a curved guide by a curved portion is further provided with a locking portion 17 which is perpendicular to the other end of the breaking guide 16 and has an upper end facing the notch opening 12 and reaching there. Incidentally, the distance from the notch opening 12 in the notch groove 11 to the locking portion 17, that is, the upper end of the widening portion 13 is 3 mm, the maximum depth of the widening portion 13 is 7 mm, and the width of the breaking guide 16 and the locking portion 17 is the same 2 mm. .
[0013]
In the cross bar 2, the engaging ridge 20 is formed by bending the above-mentioned aluminum sheet material twice at the front end side to improve the rigidity to a thickness of 0.6 mm and secure a single piece at the rear end side. And a pair of opposing walls 21 which can receive a foam-filled urethane resin to secure the rigidity of the urethane resin, while connecting the opposing walls 21 at the middle on the overlapping bent side, and in this example, the engaging projections 20 are used. Are formed into an H-shape, and a breakable wall 23 is formed as a thin bridge of an intermediate wall made of a single, that is, 0.3 mm-thick aluminum sheet material. The distance between the opposing walls 21 is 1.5 mm, and the projections project perpendicularly to a projection width of 5 mm.
[0014]
The breaking cutter 15 of the base beam 1 formed in this way has a length in which the to-be-breaked wall 23 abuts and intersects the longitudinally leading end thereof by the cross beam press-fitting pressure when the engaging ridge 20 is pressed into the notch groove 11. The self-rupturing property (self-cutting property) is imparted to the rupturable wall 23 which partially breaks (cuts) over the range of the length. In addition to the clamping between the opposing walls 21 at the edges of the notch groove 11, the remaining portion of the standing fin 10 is further clamped at the longitudinal end.
[0015]
That is, when the engaging ridge 20 of the cross bar 2 is pressed into the pair of cutout grooves 11 of the upright fin 10 in order to fix the cross bar 2 to the base bar 1 in a manner of straddling the standing fin, the engaging ridge 20 is fixed. Is inserted into the notch groove 11 so that the edge of the notch groove 11 is sandwiched, and the breakable wall 23 is inserted into the notch groove 11. While being received, it advances into the notch groove 11 so as to be guided by the inclined guide 14 from the notch opening 12, and the notch edge on the protruding piece 18 side defining the opening width of the notch opening 12, that is, the widened portion 13 in the protruding piece 18. Under the control of the overhanging projections 19, the breakable walls 23 on both sides are brought into a state of abutting the cutting cutters 15 in a crossing manner and still receive the press-fitting pressure in the longitudinal direction. Without being able to withstand this press-fitting pressure. The break is caused by continuing the press-fitting pressure, so that the breakable cutter 23 intersects with the breakable wall 23 in a range of length, that is, the longitudinal end of the cross bar 2 is a flat base wall of the base bar 1. To form a shape that abuts over a range of intersecting lengths.
[0016]
At this time, in the present example, the fractured end of the wall 23 to be fractured is guided by the fracture guide 16 formed by the curved portion of the notch groove 11. The pair of remaining opposing walls 21 that are guided in a rolled-up state and are located at the fractured portion have the thickness of the breaking cutter 15, that is, the thickness interval of the upstanding fin 10, and pressurize the remaining portion of the upstanding fin 10. It leads to pinching.
[0017]
In the state where the engaging ridge 20 is pressed into the notch groove 11, the retaining means 30 is provided by performing punching to prevent the engaging ridge 20 from being pulled out and to more securely fix the engaging ridge 20. This is performed on the inner side of the wall to be broken 23 of the wall 21, that is, on the rear end side of the pair of opposing walls 21, so that the broken portion 24 is bent or inserted into the widened portion 13 which is guided and stored. The projection is projected or protruded and locked to the locking portion 17.
[0018]
In the fence A of the present embodiment, for example, a pair of base bars 1 are installed facing each other, and the cross bars 2 are arranged between them at a predetermined interval. The cross bar 2 is filled with a foamed resin at the same time by press-fitting into the base bar 1 and then punching. At this time, the foamed resin is filled with foamed resin. Since it is easy to goug or break, it does not cause any obstacles. However, in this example, in order to prevent bulging due to the insertion of the protruding piece 18 of the cross bar 2, the longitudinal end of the cross bar 2 is used. Is removed in a semicircular shape, a rectangular shape, or the like using, for example, a vibration cutter or a circular cutter, and a resin removing portion 4 having a thickness of the protruding piece 18 for receiving the protruding piece 18 is used in advance. .
[0019]
In this example, the base bar 1 and the cross bar 2 are formed so that the longitudinal ends of the cross bar 2 receive the protruding pieces 18 so as to straddle the upright fins 10, and the front end side between the pair of opposing walls 21 in the engaging ridge 20. In addition to the pinching strength of both edges of the notch groove 11 on the rear end side, the pinching strength corresponding to the width of protrusion of the standing fin 10 of the remaining opposing wall 21 is obtained, and the strength is improved by preventing the standing fin 10 from being separated. In addition, it is possible to obtain a joining strength for firmly fixing the cross beam 2 and, with the retaining means 30 applied, fixing the cross beam 2 with a fixing strength capable of withstanding 60 kg / piece. Met.
[0020]
In the drawing, reference numeral 22 denotes a receiving groove for clamping the edge of the cutout groove 11 by the pair of opposed walls 21.
[0021]
9 and 10 show another example, and FIGS. 9 and 10 deviate the widened portion 13 in the cutout groove 11 of the rising fin 10 so as to face outward in the longitudinal direction of the rising fin 10, and expand the widening portion. The lower end of the widened portion 13 has a shape similar to a quarter note or an ax shape in which the lower end 13 is inclined, and the inclined guide 14 is omitted. The breaking guide 16 is guided to the inside and outside of the widened portion 13, and the retaining means 30 is formed by a press notch which is cut out and protrudes into the widened portion 13 at a portion outside the broken wall 23 of the pair of opposed walls 21, that is, at a portion on the tip side. In FIG. 11, the curved portion of the widened portion 13 is formed into a C-shape so that the break guide 16 of the widened portion 13 is guided to the widened portion 13 in such a manner that the broken portion 24 of the breakable wall 23 is wound. Notch processing, above the curved part FIG. 12 shows an example in which the notched groove 11 is formed in a shape similar to a quarter note by setting the notch end 16 ′, and FIG. 12 shows the breaking guide 16 of the widened portion 13 and the broken portion 24 of the breakable wall 23 being curved or bent. The break guide 16 is provided in a groove shape below the widened portion 13 so as to receive the break guide. In this case, the self-curling property at the time of the break is suppressed so that the break 24 can easily enter the break guide 16. This is an example in which the breaking cutter 15 has a large-diameter curved shape so that the breaking is performed gently. In each case, the fixing strength is similarly improved and secured. Since it is configured, the same reference numerals are given and the description is omitted.
[0022]
Although the illustrated example is as described above, in the practice of the present invention, the length of the inclined guide and the break guide in the notch groove should be shortened or omitted as much as possible, Are provided at the rear end positions of a pair of opposing walls, and are formed in a U-shape. The holding by the opposing walls is one side edge of the notch groove, and one or both of a base beam and a cross beam are provided. Made of hollow aluminum extruded material, made of metal sheet material other than the above-mentioned aluminum sheet material filled with foamed resin by insertion filling or filling foaming, etc., enabling breakage of the breakable wall between a pair of opposing walls at the cross bar Or, in order to facilitate the breaking, a V-shaped groove for thinning the breaking position shall be engraved as necessary. Instead of a piece, use a bar-shaped narrow projection that defines each notch, To prevent the blister from being inserted by inserting it into the cross-bar filled with foamed resin, to provide a retaining means on one side of a pair of opposing walls, to constitute a frame, or to use a part other than a fence It is possible to use the present invention so as to constitute a gate assembly such as a gate, a grid, a handrail, or the like. At this time, it is possible to use a base bar as a vertical bar and a cross bar as a horizontal bar or an end frame bar. In the present invention, each specific material such as a base bar, an upright fin, a notch groove, a cutter for breaking, a cross bar, an engaging ridge, a wall to be broken, a retaining means, a breaking guide to be installed as required, and a slope guide. The shapes, structures, dimensions, numbers, their relationships, and additions to them can be in various modified forms.
[0023]
【The invention's effect】
Since the present invention is constructed as described above, a first aspect of the present invention is to prevent the pair of opposing walls of the engaging ridge from clamping the edge of the notch groove, and to prevent the remaining opposing wall from being separated in addition to the retaining means. As a result, it is possible to obtain the holding strength of the standing fin remaining portion, which itself has improved strength, and to greatly improve the fixing strength of the cross beam with respect to the base bar to secure sufficient fixing strength, while maintaining the standing fin remaining portion by the above-mentioned remaining facing wall. Since the clamping of the cut-off groove is performed by the abutting intersection of the breakable wall with the cutter for breaking the notch groove, that is, by the self-breakability of the breakable wall by the press-fitting pressure of the cross-bar, the cross-bar is press-fitted into the base bar and stopped. By applying the means, it is possible to provide a beam fixing device such as a fence which can easily and efficiently fix the beam.
[0024]
In addition, in addition to the above, the break guide guides the broken portion into the widened portion without being caught by the break guide when the broken wall is broken, so that the broken wall is caught by the remaining opposing wall. It can be more reliable.
[0025]
According to the third aspect of the present invention, in addition to the above, the wall to be fractured is appropriately guided to the cutter for fracture by the inclined guide to promote the fracture, and the fracture of the wall to be fractured and the clamping by the remaining opposing wall are more surely performed. be able to.
[0026]
According to a fourth aspect of the present invention, in addition to the above, the retaining means by punching is located on the inner side of the broken wall of the opposing wall and is not conspicuous, so that the appearance of the cross-bar fixing portion can be improved.
[0027]
In addition to this, in addition to the above, the breakage of the aluminum thin plate is facilitated by ensuring the breakage, so that the breakage of the breakable wall and the clamping by the remaining opposing wall are more surely performed, while the aluminum thin plate material is used. It is possible to secure the fixing strength by changing the material of the crosspiece by using it.
[Brief description of the drawings]
FIG. 1 is a front view of a fence. FIG. 2 is an enlarged front view showing fixed portions of a base bar and an intersection bar. FIG. 3 is a cross-sectional view taken along a line AA of FIG. 2 FIG. FIG. 5 is an enlarged front view of the standing fin. FIG. 6 is an enlarged cross-sectional view of the cross bar. FIG. 7 is an enlarged front view showing the relationship between the notched groove and the engaging ridge. FIG. 9 is an enlarged front view showing another example. FIG. 10 is an enlarged cross-sectional view showing another example. FIG. 11 is an enlarged front view showing another example. Enlarged front view showing an example [Description of reference numerals]
A Fence 1 Base bar 2 Cross bar 3 Foam resin 10 Upright fin 11 Notch groove 12 Notch opening 13 Widening portion 14 Inclined guide 15 Breaking cutter 16 Breaking guide 20 Engagement ridge 21 Opposing wall 23 Breakable wall 24 Breaking portion 30 Stopping means