JP3454484B2 - Beam mounting structure of protective fence - Google Patents

Description

【発明の詳細な説明】 【０００１】 【産業上の利用分野】本発明は、車道と歩道との境界、
車止め、ベランダ等の防護柵の支柱上端に手摺ビームが
カバーで取り付けられている防護柵のビーム取付構造に
関する。 【０００２】 【従来の技術】従来の防護柵の支柱に手摺ビームを取り
付けた防護柵のビーム取付構造は、支柱の横側に手摺ビ
ームを取り付けたフロント型と支柱の左右側壁に手摺ビ
ームを取り付けたセンタービーム型とがある。しかし、
フロント型は手摺ビームを取り付けるブラケットが側方
に突出するから、防護柵の占める面積が多くなり、例え
ば、歩道等の利用できる面積が少なくなるという問題が
あるし、センタービーム型は手摺ビームを取り付けるブ
ラケットを支柱の左右側壁に溶接しているが、この溶接
作業が煩雑であるという問題がある。 【０００３】かかる問題を解決する構造として、実公昭
５５−１０４１０号公報記載のように、支柱の上端に手
摺ビームをカバーで接続して取り付けた防護柵のビーム
取付構造が知られている。この公報記載の防護柵のビー
ム取付構造は、ほぼ水平な断面半円形のカバーの下側内
面にほぼ垂直に設けた小管の中に支柱の上端を挿入し、
このカバーの小管の側壁から螺入したたボルトでカバー
を固定して支柱に取り付け、カバーの下側に左右の手摺
ビームを当接し、左右の手摺ビームをカバーの上側から
螺入したボルトで固定してカバーを取り付けるものであ
る。 【０００４】この公報記載の防護柵のビーム取付構造は
ブラケット等を使用しないから、フロント型のように側
方に突出することがなく、又、センタービーム型のよう
にブラケットを溶接する必要がないので好ましい構造で
ある。 【０００５】 【発明が解決しようとする課題】しかし、上記公報記載
の支柱の上端に左右の手摺ビームをカバーで取り付けた
防護柵のビーム取付構造では、カバーの小管の側壁から
螺入したボルトでカバーを固定して支柱に取り付けてい
るが、カバーの下側内面の小管が見えると見苦しいの
で、通常、極めて短くしている。従って、屈み込んだ不
自然な姿勢にして、この下側に設けられた小管の側壁か
ら支柱にボルトを螺入する必要があり、施工し難いとい
う問題がある。又、カバーの上側から螺入して手摺ビー
ムを取り付けたボルトがカバーの上から見えたり、カバ
ーの下方から手摺ビームの接続端部や下側が顕れている
から、外観が悪いし、又、ボルトが露出していると、人
の手や衣服を傷つけたりして安全面にも問題がある。 【０００６】そこで、本発明の目的は、施工し易いし、
ボルトや手摺ビームの接続端部が見えない外観のよい防
護柵ビーム取付構造を提供することである。 【０００７】 【課題を解決するための手段】本発明は上記目的を達成
するためになしたものであって、左右の手摺ビームの接
続端部が防護柵の支柱上端面にカバーで接続されて取り
付けられた防護柵のビーム取付構造において、前記支柱
上端面にはビス孔が設けられ、前記左右の手摺ビームは
筒状体で、この筒状体の接続端部には上側壁に大孔が、
又、この大孔の下方の下側壁に小孔が設けられ、前記カ
バーは手摺ビームの接続端部を包み込む大きさの筒状体
で、軸方向に分割された上側カバーと下側カバーとから
なり、下側カバーには、中央部に通孔が、又、両端部に
ビス孔が設けられ、上側カバーには、両端部に相対する
板バネ片からなる板バネが設けられ、この相対する板バ
ネ片間の間隔は根元部で手摺ビームの大孔の幅とほぼ同
じかやや大きく中間の折曲部で一旦外側に拡げられた後
に次第に狭められて先端部で大孔の幅より小さくなされ
ていて、下側カバーの通孔から支柱のビス孔にビスが螺
入されて下側カバーが切断面を上方向に向けて支柱の上
端面に固定されて取り付けられ、手摺ビームの下側壁の
小孔から下側カバーのビス孔にビスが螺入されて左右の
手摺ビームがそれぞれ下側カバーの両端部に固定されて
取り付けられ、左右の手摺ビームの上側壁の大孔の中に
上側カバーの両端部の板バネが挿入され、大孔の側縁が
相対する板バネ片の折曲部に係止され上側カバーの切断
面と下側カバーの切断面とが合わされて上側カバーが手
摺ビームに取り付けられたものである。 【０００８】本発明における板バネは相対する板バネ片
からなるが、この板バネ片の先端部や根元部が接続され
ていてもよいし、離れていてもよい。特に、先端部や根
元部が接続されていると、板バネの元に戻る力が強くな
るので好ましい。又、この板バネ片を上側カバーの下面
に別々に取り付けてもよいし、相対している板バネ片の
先端部を連結片で連結し、この連結片を上側カバーの下
面に取り付けてもよい。 【０００９】本発明においては、手摺ビームの下側壁の
小孔から下側カバーのビス孔にビスが螺入されて左右の
手摺ビームが下側カバーの両側に固定されて取り付けら
れているが、かかる構造になす施工方法は、通常、上側
壁の大孔から操作して、下側壁の小孔からビスを下側カ
バーに螺入する。従って、上側壁の大孔から操作してビ
スを小孔から下側カバーのビス孔に螺入し易いように、
この小孔が設けられている部分の下側壁を上側壁の大孔
部分に近づけることが好ましい。 【００１０】 【作用】本発明の作用を使用方法を説明しながら説明す
る。本発明では、下側カバーの通孔から支柱のビス孔に
ビスが螺入されて下側カバーが切断面を上方に向けて支
柱の上端面に固定されて取り付けられている。かかる構
造にするには、下側カバーを切断面を上方に向けて支柱
の上端面に当接させて下側カバーの通孔から支柱のビス
孔にビスを上方から螺入すればよい。このように、下側
カバーを支柱に固定して取り付ける施工方法はビスを上
方から螺入すればよいから、従来のように屈み込んだ不
自然な姿勢でビスを螺入する必要がなく極めて取り付け
易い。 【００１１】又、本発明では、手摺ビームの下側壁の小
孔から下側カバーのビス孔にビスが螺入されて左右の手
摺ビームがそれぞれ下側カバーの両側部に固定されて取
り付けられている。かかる構造にするには、左右の手摺
ビームの接続端部をそれぞれ下側カバーの左右の両端部
に載せ、手摺ビームの上側壁の大孔から下側壁の小孔に
ビスを入れ、このビスを上方の大孔から操作して下側カ
バーのビス孔に螺入すればよい。このようにビスを上方
から螺入すればよいから施工し易い。 【００１２】又、本発明では、左右の手摺ビームの上側
壁の大孔の中に上側カバーの両端部の板バネが挿入さ
れ、大孔の側縁が相対する板バネ片の折曲部に係止され
上側カバーの切断面と下側カバーの切断面とが合わされ
て上側カバーが手摺ビームに取り付けられている。かか
る構造にするには、板バネを大孔の中に挿入しながら、
上側カバーの切断面を下側カバーの切断面に合わせるだ
けでよい。 【００１３】このように板バネを大孔の中に挿入する
と、先ず、板バネ先端部の板バネ片間が大孔の幅より小
さいから、簡単に板バネ先端部を挿入でき、その後、上
側カバーが下側カバーに近づくと、板バネ片間は先端部
に行くに従って狭く、即ち、根元部に行くに従って次第
に拡がっているから、この次第に拡がっている傾斜面が
大孔の側縁に押される結果、相対する板バネ片は互いに
近づくように変形して大孔の中に入る。更に上側カバー
が下側カバーに近づくと、根元部では板バネ片間が大孔
の幅とほぼ同じかやや大きいから、板バネ片は弾性によ
り外側に拡がり元に戻ろうとし、上側カバーの切断面と
下側カバーの切断面とが合わされて手摺ビームに取り付
けられる。このように取り付けられると、上側カバーの
板バネ片の折曲部に手摺ビームの大孔の側縁が係止さ
れ、上側カバーが手摺ビームに強固に取り付けられる。 【００１４】このように、本発明では、ビスを上方から
螺入したり板バネを大孔の中に挿入するだけであるか
ら、施工が簡単である。本発明防護柵のビーム取付構造
は、下側カバーの中央部の通孔から支柱のビス孔にボル
トが螺入されて取り付けられ、左右の手摺ビームの接続
端部が下側カバーの両端部に設けられているビス孔に螺
入されたビスで固定されている。そして、下側ビームの
切断面と上側ビームの切断面とが合わされているから、
これ等のビスや左右の手摺ビームの接続端部はすべて上
側ビームと下側ビームの内部に入って、ビスや手摺ビー
ムの端部が見えなくなり美麗となる。 【００１５】 【実施例】次に、本発明の実施例を説明する。図１〜図
７は本発明防護柵のビーム取付構造の一実施例を示し、
図１は防護柵のビーム取付構造の分解説明図、図２は支
柱上端のキャップを示し、（イ）は平面図、（ロ）は正
面図、（ハ）はＡ−Ａ線における断面図、図３は手摺ビ
ームの接続端部を示し、（イ）は平面図、（ロ）は正面
図、（ハ）は側面図、図４は下側カバーを示し、（イ）
は平面図、（ロ）は正面図、（ハ）は側面図、図５は上
側カバーを示し、（イ）は平面図、（ロ）は正面図、
（ハ）は側面図、図６は板バネを示し、（イ）は平面
図、（ロ）は正面図、図７は板バネが手摺ビームの大孔
に挿入された状態を示す説明図である。 【００１６】図１〜図７において、１は支柱であり、ア
ルミニウム製の筒状の支柱本体１１とアルミニウム製の
キャップ１２とからなる。支柱本体１１は角部が窪んで
いるほぼ四角形の筒状体である。キャップ１２は、図２
に示すように、支柱本体１１の上端を覆う形状で中央部
にビス孔１３が、又、下方に窪み１４が設けられてい
る。そして、この窪み１４の中に支柱１１の上端を挿入
してキャップ１２を支柱本体１１の上端に取り付けると
支柱１となる。 【００１７】２はアルミニウム製の筒状体からなる手摺
ビームであり、図３に示すように、断面が楕円形で下側
壁２１が上方に移動し、上側壁２２に近づいた形状をし
ている。そして、上側壁２２の接続端部にはほぼ正方形
に切欠された大孔２３が設けられ、下側壁２１には大孔
２３の下方に長手方向に長い楕円形の小孔２４が設けら
れている。 【００１８】３はアルミニウム製のカバーであり、手摺
ビーム２の接続端部を包み込む大きさの断面ほぼ円形の
筒状体であって、このカバー３は軸方向に分割された上
側カバー４と下側カバー５とからなる。 【００１９】上側カバー４は、図５に示すように、断面
半円形状の短尺体で、両端部内側に突出片４５が設けら
れ、この突出片に板バネ６を取り付けるビス孔４１が設
けられ、中央部の両側に嵌合片４２が設けられている。
下側カバー５は、図４に示すように、断面半円形状の短
尺体で、中央部が軸方向に肉厚になされて肉厚部５１が
設けられ、この肉厚部５１のほぼ中央に長手方向に長い
通孔５２が、又、両端部にビス孔５３が設けられてい
る。又、肉厚部５１を挟んだ中央部の両側に上側ビーム
４の嵌合片４２を挟んで嵌合できる嵌合片５４が設けら
れている。 【００２０】板バネ６は、図６に示すように、両側に相
対する板バネ片６１と、板バネ片６１の先端部を連結す
る連結片６２とからなる。そして、両側の板バネ片６１
間の間隔は、根元部６５で手摺ビーム２の大孔２３の幅
とほぼ同じかやや大きく、中間の折曲部６６で一端外側
に拡げられた後に次第に狭められて先端部６７で大孔２
３の幅より小さくなっている。又、連結片６２のほぼ中
央部に通孔６８が設けられ、図７に示すようにビス６９
がこの通孔６８から上側カバー４のビス孔４１に螺入さ
れて、板バネ６が上側カバー６に取り付けられている。 【００２１】次に、この防護柵のビーム取付構造になす
施工方法について説明する。先ず、支柱本体１１の上端
にキャップ１２を取り付けて支柱１を形成し、支柱１を
所定位置、例えば、車道と歩道との境界に多数立設す
る。次に、下側カバー５の切断面を上方に向けて支柱１
の上端に当接させ、下側カバー５の通孔５２から支柱１
のキャップ１２のビス孔１３にビス１５を螺入する。こ
のようにして多数の支柱１の上端面に下側カバー５を取
り付ける。 【００２２】次に、下側カバー５と隣の下側カバー５と
の間に手摺ビーム２を架け渡すと、下側カバー５両端部
の上に左右の手摺ビーム２の接続端部が載る。次に、手
摺ビーム２の上側壁２２の大孔２３から下側壁２１の小
孔２４にビス２５を入れて、このビス２５を下側壁の小
孔２４から下側カバー５のビス孔５３に螺入する。する
と、左右の手摺ビーム２がそれぞれ下側カバー５の両側
部に固定されて取り付けられる。 【００２３】次に、左右の手摺ビーム２の上側壁２２の
大孔２３の中に上側カバー４の両端部の板バネ６を挿入
する。すると、板バネ６の先端部では、板バネ片６１間
は大孔２３の幅より小さいから、簡単に、大孔２３に板
バネ６の先端部を挿入でき、その後、上側カバー４が下
側カバー５に近づくと、板バネ片６１間が先端に行くに
従って狭く、即ち、根元に行くに従って拡がっているか
ら、この次第に拡がっている傾斜面が大孔２３の側縁に
押される結果、相対する板バネ片６１は互いに近づくよ
うに変形して板バネ６が大孔２３の中に入る。更に、上
側カバー４が下側カバーに近づくと、根元部６５では板
バネ片６１間が大孔２３の幅とほぼ同じかやや大きいか
ら、板バネ片６１は弾性により外側に拡がり元に戻ろう
とし、上側カバー４の切断面と下側カバー５の切断面と
が合わされて手摺ビーム２に取り付けられる。 【００２４】このように取り付けられると、図７に示す
ように、上側カバー４の板バネ６の折曲部６６に手摺ビ
ーム２の大孔２３の側縁が係止されて、上側カバー４が
手摺ビーム２に強固に取り付けられる。又、これ等のビ
ス１５、２５や左右の手摺ビーム２の接続端部はすべて
上側カバー４と下側カバー５の内部に入り、ビス１５、
２５や手摺ビーム２の接続端部が外から見えなくなる。 【００２５】 【発明の効果】本発明では、下側カバーの通孔から支柱
のビス孔にビスが螺入されて下側カバーが切断面を上方
に向けて支柱の上端面に固定されて取り付けられている
から、下側カバーを切断面を上方に向けて支柱の上端面
に当接させて下側カバーに設けられている通孔から支柱
のビス孔にビスを上方から螺入すればよく、極めて施工
し易い。 【００２６】又、本発明では、手摺ビームの下側壁の小
孔から下側カバーのビス孔にビスが螺入されて左右の手
摺ビームがそれぞれ下側カバーの両側部に固定されて取
り付けられているから、左右の手摺ビームの端部をそれ
ぞれ下側カバーの左右から両端部に載置し、手摺ビーム
の上側壁の大孔から下側壁の小孔にビスを入れ、このビ
スを上方から下側カバーのビス孔に螺入すればよく、施
工し易い。 【００２７】又、本発明では、左右の手摺ビームの上側
壁の大孔の中に上側カバーの両端部の板バネが挿入さ
れ、大孔の側縁が相対する板バネ片の折曲部に係止され
上側カバーの切断面と下側カバーの切断面とが合わされ
て上側カバーが手摺ビームに取り付けられているから、
上側カバーを下側カバーに、板バネを大孔の中に挿入し
ながら、合わせるだけでよい。このように、本発明で
は、ビスを上方から螺入したり板バネを大孔の中に挿入
するだけであるから、施工が簡単である。 【００２８】本発明では、上側カバーの板バネは相対す
る板バネ片からなり、板バネ片間の間隔は根元部で手摺
ビームの大孔の幅とほぼ同じかやや大きく中間の折曲部
で一端外側に拡げられた後に次第に狭められて先端で大
孔の幅より小さくなされているから、上側カバーの板バ
ネを手摺ビームの大孔の中に挿入すると、上側カバーの
板バネの折曲部に大孔の側縁が係止されて、上側カバー
が手摺ビームに強固に取り付けられる。 【００２９】本発明防護柵のビーム取付構造は、ビスや
左右の手摺ビームの端部はすべて上側ビームと下側ビー
ムの内部に入り、ビスや手摺ビームの端部が見えなくな
り美麗となる。又、ビス等が露出しないから、人の手や
衣服を傷つける心配もない。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boundary between a road and a sidewalk,
The present invention relates to a beam mounting structure of a protective fence in which a handrail beam is attached to a top end of a support fence of a protective fence such as a vehicle stop or a veranda with a cover. 2. Description of the Related Art A conventional protection fence beam mounting structure in which a handrail beam is mounted on a column of a protection fence is a front type in which a handrail beam is mounted on a side of a column and a handrail beam is mounted on left and right side walls of the column. Center beam type. But,
The front type has a problem that the area to be occupied by the protective fence increases because the bracket for attaching the handrail beam protrudes to the side, for example, the available area such as the sidewalk decreases, and the center beam type attaches the handrail beam Although the brackets are welded to the left and right side walls of the column, there is a problem that this welding operation is complicated. As a structure for solving such a problem, as described in Japanese Utility Model Publication No. Sho 55-10410, there is known a beam mounting structure of a protective fence in which a handrail beam is connected to an upper end of a column by a cover. In the beam mounting structure of the protective fence described in this publication, the upper end of the column is inserted into a small tube provided substantially vertically on the lower inner surface of the cover having a substantially horizontal semicircular cross section,
Fix the cover with bolts screwed in from the side wall of the small pipe of this cover, attach it to the support, abut the left and right handrail beams on the lower side of the cover, and fix the left and right handrail beams with bolts screwed in from the upper side of the cover And then attach the cover. The beam mounting structure of the protective fence described in this publication does not use a bracket or the like, so that it does not protrude to the side as in the front type, and does not need to be welded to the bracket as in the center beam type. This is a preferred structure. [0005] However, in the beam mounting structure of the protective fence in which the right and left handrail beams are mounted on the upper ends of the columns described in the above publications with covers, bolts screwed from the side walls of the small pipes of the cover. The cover is fixed and attached to the column, but it is usually very short because the small tube on the lower inner surface of the cover is unsightly and visible. Therefore, it is necessary to screw the bolt into the support from the side wall of the small pipe provided on the lower side in a crooked and unnatural posture, and there is a problem that the construction is difficult. Also, bolts screwed in from the upper side of the cover and attached to the handrail beam can be seen from above the cover, and the connection end and lower side of the handrail beam can be seen from below the cover. When exposed, there is a problem in terms of safety, such as damage to human hands and clothes. Therefore, an object of the present invention is to facilitate construction,
An object of the present invention is to provide a protective fence beam mounting structure having a good appearance in which connection ends of bolts and handrail beams are not visible. SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and the connecting ends of the left and right handrail beams are connected to the upper end surfaces of the columns of the protective fence by a cover. In the beam mounting structure of the attached protective fence, a screw hole is provided in the upper end surface of the support, and the left and right handrail beams are cylindrical bodies, and a large hole is formed in an upper side wall at a connection end of the cylindrical body. ,
A small hole is provided in the lower wall below the large hole, and the cover is a cylindrical body sized to wrap the connection end of the handrail beam, and is formed by an upper cover and a lower cover divided in the axial direction. The lower cover is provided with a through hole at the center and screw holes at both ends, and the upper cover is provided with a leaf spring composed of a leaf spring piece opposed to both ends. The distance between the leaf spring pieces is almost the same as or slightly larger than the width of the large hole of the handrail beam at the root part, and once expanded outward at the middle bent part, it is gradually narrowed and made smaller than the width of the large hole at the tip part. The screw is screwed into the screw hole of the support from the through hole of the lower cover, the lower cover is fixed to the upper end surface of the support with the cut surface facing upward, and the lower side wall of the handrail beam is fixed. Screws are screwed into the screw holes in the lower cover from the small holes, and the left and right handrail beams The leaf springs at both ends of the upper cover are inserted into the large holes in the upper sidewalls of the left and right handrail beams, and the side edges of the large holes face each other. And the cut surface of the upper cover and the cut surface of the lower cover are fitted together, and the upper cover is attached to the handrail beam. In the present invention, the leaf springs are composed of opposing leaf spring pieces. The leaf spring pieces may be connected to each other at the tip or the root thereof or may be separated from each other. In particular, it is preferable that the distal end portion and the root portion are connected because the force for returning to the base of the leaf spring is increased. Further, the leaf spring pieces may be separately attached to the lower surface of the upper cover, or the leading ends of the leaf spring pieces facing each other may be connected by a connecting piece, and the connecting piece may be attached to the lower surface of the upper cover. . In the present invention, the screw is screwed into the screw hole of the lower cover from the small hole in the lower wall of the handrail beam, and the left and right handrail beams are fixed and attached to both sides of the lower cover. In the construction method for forming such a structure, the screw is usually screwed into the lower cover from the small hole in the lower wall by operating from the large hole in the upper wall. Therefore, the screw is easily screwed into the screw hole of the lower cover from the small hole by operating from the large hole in the upper wall.
It is preferable that the lower wall portion where the small hole is provided is close to the large hole portion of the upper wall. The operation of the present invention will be described while explaining how to use it. In the present invention, the screw is screwed into the screw hole of the column from the through hole of the lower cover, and the lower cover is fixed to the upper end surface of the column with the cut surface facing upward. In order to achieve such a structure, the lower cover may be brought into contact with the upper end surface of the column with the cut surface facing upward, and a screw may be screwed into the screw hole of the column from above through the through hole of the lower cover. In this way, the fixing method of fixing the lower cover to the support column can be done by screwing the screws from above, so there is no need to screw the screws in an unnatural posture bent down as in the past, it is extremely attached easy. In the present invention, a screw is screwed into a screw hole of the lower cover from a small hole in the lower wall of the handrail beam, and the left and right handrail beams are fixed and attached to both sides of the lower cover. I have. To achieve such a structure, the connection ends of the left and right handrail beams are placed on the left and right ends of the lower cover, respectively, and screws are inserted from the large holes in the upper wall of the handrail beam into the small holes in the lower wall. It may be operated from the upper large hole and screwed into the screw hole of the lower cover. Since the screws need only be screwed in from above, it is easy to construct. In the present invention, the leaf springs at both ends of the upper cover are inserted into the large holes in the upper side walls of the left and right handrail beams, and the side edges of the large holes are formed in the bent portions of the plate spring pieces facing each other. The cut surface of the upper cover and the cut surface of the lower cover are locked and the upper cover is attached to the handrail beam. To make such a structure, while inserting the leaf spring into the large hole,
It is only necessary to match the cut surface of the upper cover with the cut surface of the lower cover. When the leaf spring is inserted into the large hole as described above, first, since the distance between the leaf spring pieces at the distal end of the leaf spring is smaller than the width of the large hole, the distal end of the leaf spring can be easily inserted. When the cover approaches the lower cover, the gap between the leaf spring pieces becomes narrower toward the tip, that is, gradually expands toward the root, so that the gradually expanding inclined surface is pressed against the side edge of the large hole. As a result, the opposing leaf spring pieces deform so as to approach each other and enter the large hole. Further, when the upper cover approaches the lower cover, the gap between the leaf springs at the base is almost the same as or slightly larger than the width of the large hole. The surface and the cut surface of the lower cover are fitted and attached to the handrail beam. When attached in this manner, the side edge of the large hole of the handrail beam is locked to the bent portion of the leaf spring piece of the upper cover, and the upper cover is firmly attached to the handrail beam. As described above, according to the present invention, since the screw is simply screwed in from above or the leaf spring is inserted into the large hole, the construction is simple. In the beam mounting structure of the protective fence of the present invention, the bolt is screwed into the screw hole of the support from the through hole at the center of the lower cover, and the connection ends of the left and right handrail beams are attached to both ends of the lower cover. It is fixed with screws screwed into provided screw holes. And since the cut surface of the lower beam and the cut surface of the upper beam are aligned,
All the connecting ends of these screws and the left and right handrail beams enter the inside of the upper beam and the lower beam, and the ends of the screws and the handrail beams become invisible and beautiful. Next, an embodiment of the present invention will be described. 1 to 7 show an embodiment of a beam mounting structure of the protective fence of the present invention,
FIG. 1 is an exploded view of the beam mounting structure of the protective fence, FIG. 2 shows a cap at the upper end of the column, (a) is a plan view, (b) is a front view, (c) is a cross-sectional view along line AA, 3 shows a connection end of the handrail beam, (a) is a plan view, (b) is a front view, (c) is a side view, and FIG. 4 shows a lower cover.
Is a plan view, (b) is a front view, (c) is a side view, FIG. 5 shows an upper cover, (a) is a plan view, (b) is a front view,
(C) is a side view, FIG. 6 shows a leaf spring, (A) is a plan view, (B) is a front view, and FIG. 7 is an explanatory view showing a state where the leaf spring is inserted into a large hole of a handrail beam. is there. In FIG. 1 to FIG. 7, reference numeral 1 denotes a support, which comprises an aluminum cylindrical support main body 11 and an aluminum cap 12. The support body 11 is a substantially rectangular cylindrical body having a depressed corner. The cap 12 is shown in FIG.
As shown in the figure, a screw hole 13 is provided at the center and a depression 14 is provided below the pillar body 11 so as to cover the upper end of the column body 11. When the upper end of the support 11 is inserted into the recess 14 and the cap 12 is attached to the upper end of the support main body 11, the support 1 is formed. Numeral 2 denotes a handrail beam made of an aluminum cylindrical body. As shown in FIG. 3, the cross section is elliptical and the lower wall 21 moves upward and approaches the upper wall 22. . The connection end of the upper side wall 22 is provided with a large hole 23 cut out in a substantially square shape, and the lower side wall 21 is provided with an elliptical small hole 24 long in the longitudinal direction below the large hole 23. . Reference numeral 3 denotes an aluminum cover, which is a cylindrical body having a substantially circular cross section sized to wrap around the connection end of the handrail beam 2. The cover 3 includes an upper cover 4 divided in the axial direction and a lower cover. And a side cover 5. As shown in FIG. 5, the upper cover 4 is a short body having a semicircular cross section, and has a protruding piece 45 provided on the inside of both ends, and a screw hole 41 for attaching the leaf spring 6 is provided on the protruding piece. The fitting pieces 42 are provided on both sides of the central portion.
As shown in FIG. 4, the lower cover 5 is a short body having a semicircular cross section, and has a thick portion 51 provided at the center portion in the axial direction, and a thick portion 51 is provided. A long through hole 52 is provided in the longitudinal direction, and screw holes 53 are provided at both ends. Fitting pieces 54 are provided on both sides of the center portion of the thick part 51 so as to fit the fitting pieces 42 of the upper beam 4 therebetween. As shown in FIG. 6, the leaf spring 6 is composed of a leaf spring piece 61 opposed to both sides and a connecting piece 62 for connecting the tip of the leaf spring piece 61. And the leaf spring pieces 61 on both sides
The space between the large holes 23 of the handrail beam 2 at the root portion 65 is substantially the same as or slightly larger than the width of the large holes 23.
3 is smaller than the width. Further, a through hole 68 is provided substantially at the center of the connecting piece 62, and a screw 69 is provided as shown in FIG.
Is screwed into the screw hole 41 of the upper cover 4 from the through hole 68, and the leaf spring 6 is attached to the upper cover 6. Next, a method of constructing the beam mounting structure of the protective fence will be described. First, the cap 12 is attached to the upper end of the pillar body 11 to form the pillar 1, and the pillars 1 are erected at a predetermined position, for example, at a boundary between a roadway and a sidewalk. Next, with the cut surface of the lower cover 5 facing upward, the support 1
To the upper end of the support 1 through the through hole 52 of the lower cover 5.
Screw 15 is screwed into screw hole 13 of cap 12 of FIG. In this manner, the lower cover 5 is attached to the upper end surfaces of the multiple columns 1. Next, when the handrail beam 2 is bridged between the lower cover 5 and the adjacent lower cover 5, the connection ends of the left and right handrail beams 2 are placed on both ends of the lower cover 5. Next, a screw 25 is inserted into the small hole 24 of the lower side wall 21 from the large hole 23 of the upper side wall 22 of the handrail beam 2, and the screw 25 is screwed into the screw hole 53 of the lower cover 5 from the small hole 24 of the lower side wall. Enter. Then, the left and right handrail beams 2 are fixed and attached to both sides of the lower cover 5 respectively. Next, the leaf springs 6 at both ends of the upper cover 4 are inserted into the large holes 23 in the upper side walls 22 of the left and right handrail beams 2. Then, at the tip of the leaf spring 6, the gap between the leaf spring pieces 61 is smaller than the width of the large hole 23, so that the tip of the leaf spring 6 can be easily inserted into the large hole 23, and then the upper cover 4 is moved to the lower side. When approaching the cover 5, the gap between the leaf spring pieces 61 becomes narrower toward the tip, that is, it expands toward the base. As a result, the gradually expanding inclined surface is pressed against the side edge of the large hole 23, and consequently faces each other. The leaf spring pieces 61 deform so as to approach each other, and the leaf spring 6 enters the large hole 23. Further, when the upper cover 4 approaches the lower cover, the distance between the leaf spring pieces 61 at the root portion 65 is almost the same as or slightly larger than the width of the large hole 23, so that the leaf spring pieces 61 expand outward and return to the original position due to elasticity. Then, the cut surface of the upper cover 4 and the cut surface of the lower cover 5 are fitted and attached to the handrail beam 2. When mounted in this manner, as shown in FIG. 7, the side edge of the large hole 23 of the handrail beam 2 is engaged with the bent portion 66 of the leaf spring 6 of the upper cover 4, so that the upper cover 4 is It is firmly attached to the handrail beam 2. Also, the connecting ends of these screws 15 and 25 and the left and right handrail beams 2 all enter the inside of the upper cover 4 and the lower cover 5, and
25 and the connection end of the handrail beam 2 cannot be seen from the outside. According to the present invention, the screw is screwed into the screw hole of the support from the through hole of the lower cover, and the lower cover is fixed to the upper end surface of the support with the cut surface facing upward. Since the lower cover is in contact with the upper end surface of the column with the cut surface facing upward, screws may be screwed into the screw holes of the column from above through the through holes provided in the lower cover. Very easy to construct. In the present invention, a screw is screwed into the screw hole of the lower cover from the small hole in the lower wall of the handrail beam, and the left and right handrail beams are fixed and attached to both sides of the lower cover. Therefore, the ends of the left and right handrail beams are placed on both ends of the lower cover from the left and right, respectively, and screws are inserted from the large holes in the upper wall of the handrail beam into the small holes in the lower wall. It only has to be screwed into the screw hole of the side cover, and construction is easy. In the present invention, the leaf springs at both ends of the upper cover are inserted into the large holes in the upper side walls of the left and right handrail beams, and the side edges of the large holes are formed in the bent portions of the plate spring pieces facing each other. Since the cut surface of the upper cover and the cut surface of the lower cover are locked and the upper cover is attached to the handrail beam,
It is only necessary to fit the upper cover to the lower cover while inserting the leaf spring into the large hole. As described above, in the present invention, since the screw is simply screwed in from above or the leaf spring is inserted into the large hole, the construction is simple. In the present invention, the leaf springs of the upper cover are composed of opposing leaf spring pieces, and the interval between the leaf spring pieces is substantially the same as or slightly larger than the width of the large hole of the handrail beam at the root portion and at the middle bent portion. Since it is gradually narrowed after being expanded outward, it is made smaller than the width of the large hole at the tip, so when the leaf spring of the upper cover is inserted into the large hole of the handrail beam, the bent part of the leaf spring of the upper cover , The side edge of the large hole is locked, and the upper cover is firmly attached to the handrail beam. In the beam mounting structure of the protection fence of the present invention, the ends of the screws and the left and right handrail beams all enter the upper beam and the lower beam, and the ends of the screws and the handrail beams become invisible and beautiful. Further, since the screws and the like are not exposed, there is no fear of damaging the hands and clothes of the person.

【図面の簡単な説明】 【図１】本発明防護柵のビーム取付構造の一実施例を示
す分解説明図である。 【図２】支柱上端のキャップを示し、（イ）は平面図、
（ロ）は正面図、（ハ）はＡ−Ａ線における断面図であ
る。 【図３】手摺ビームの接続端部を示し、（イ）は平面
図、（ロ）は正面図、（ハ）は側面図である。 【図４】下側カバーを示し、（イ）は平面図、（ロ）は
正面図、（ハ）は側面図である。 【図５】上側カバーを示し、（イ）は平面図、（ロ）は
正面図、（ハ）は側面図である。 【図６】板バネを示し、（イ）は平面図、（ロ）は正面
図である。 【図７】板バネが手摺ビームの大孔に挿入された状態を
示す説明図である。 【符号の説明】 １ 支柱 １３ ビス孔 ２ 手摺ビーム ２１ 下側壁 ２２ 上側壁 ２３ 大孔 ２４ 小孔 ３ カバー ４ 上側カバー ４１ ビス孔 ５ 下側カバー ５２ 通孔 ５３ ビス孔 ６ 板バネ ６１ 板バネ片 ６５ 根元部 ６６ 折曲部 ６７ 先端部BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded view showing an embodiment of a beam mounting structure for a protective fence according to the present invention. FIG. 2 shows a cap at the upper end of a support, (a) is a plan view,
(B) is a front view, and (C) is a cross-sectional view taken along line AA. 3A and 3B show connection ends of a handrail beam, wherein FIG. 3A is a plan view, FIG. 3B is a front view, and FIG. 3C is a side view. 4A and 4B show a lower cover, wherein FIG. 4A is a plan view, FIG. 4B is a front view, and FIG. 4C is a side view. 5A and 5B show an upper cover, wherein FIG. 5A is a plan view, FIG. 5B is a front view, and FIG. 5C is a side view. 6A and 6B show a leaf spring, wherein FIG. 6A is a plan view and FIG. 6B is a front view. FIG. 7 is an explanatory view showing a state in which a leaf spring is inserted into a large hole of a handrail beam. DESCRIPTION OF SYMBOLS 1 Support 13 Screw hole 2 Handrail beam 21 Lower wall 22 Upper wall 23 Large hole 24 Small hole 3 Cover 4 Upper cover 41 Screw hole 5 Lower cover 52 Through hole 53 Screw hole 6 Leaf spring 61 Leaf spring piece 65 Root 66 Bend 67 Tip

Claims (1)

(57)【特許請求の範囲】 【請求項１】 左右の手摺ビームの接続端部が防護柵の
支柱上端面にカバーで接続されて取り付けられた防護柵
のビーム取付構造において、前記支柱上端面にはビス孔
が設けられ、前記左右の手摺ビームは筒状体で、この筒
状体の接続端部には上側壁に大孔が、又、この大孔の下
方の下側壁に小孔が設けられ、前記カバーは手摺ビーム
の接続端部を包み込む大きさの筒状体で、軸方向に分割
された上側カバーと下側カバーとからなり、下側カバー
には、中央部に通孔が、又、両端部にビス孔が設けら
れ、上側カバーには、両端部に相対する板バネ片からな
る板バネが設けられ、この相対する板バネ片間の間隔は
根元部で手摺ビームの大孔の幅とほぼ同じかやや大きく
中間の折曲部で一旦外側に拡げられた後に次第に狭めら
れて先端部で大孔の幅より小さくなされていて、下側カ
バーの通孔から支柱のビス孔にビスが螺入されて下側カ
バーが切断面を上方向に向けて支柱の上端面に固定され
て取り付けられ、手摺ビームの下側壁の小孔から下側カ
バーのビス孔にビスが螺入されて左右の手摺ビームがそ
れぞれ下側カバーの両端部に固定されて取り付けられ、
左右の手摺ビームの上側壁の大孔の中に上側カバーの両
端部の板バネが挿入され、大孔の側縁が相対する板バネ
片の折曲部に係止され上側カバーの切断面と下側カバー
の切断面とが合わされて上側カバーが手摺ビームに取り
付けられた防護柵のビーム取付構造。(57) [Claims 1] In the beam mounting structure of a protective fence, the connection ends of the left and right handrail beams are connected to the upper ends of the posts of the protective fence by covers, and the upper ends of the posts are provided. Are provided with screw holes, the left and right handrail beams are cylindrical, and the connection end of the cylindrical body has a large hole in the upper wall, and a small hole in the lower wall below the large hole. The cover is a cylindrical body sized to wrap the connection end of the handrail beam, and includes an upper cover and a lower cover divided in the axial direction, and the lower cover has a through hole in the center. Also, screw holes are provided at both ends, and a leaf spring composed of a leaf spring piece opposed to both ends is provided on the upper cover, and the distance between the opposed leaf spring pieces is large at the root portion of the handrail beam. It is almost the same as or slightly larger than the width of the hole. It is made smaller than the width of the large hole at the tip, and the screw is screwed into the screw hole of the pillar from the through hole of the lower cover, and the lower cover turns the cut surface upward and on the upper end surface of the pillar. A screw is screwed into a screw hole of the lower cover from a small hole in the lower wall of the handrail beam, and the left and right handrail beams are fixed and attached to both ends of the lower cover, respectively,
The leaf springs at both ends of the upper cover are inserted into the large holes in the upper side walls of the left and right handrail beams, and the side edges of the large holes are locked by the bent portions of the opposing leaf spring pieces, and the cut surfaces of the upper cover are Beam mounting structure of protective fence in which the upper cover is attached to the handrail beam by matching the cut surface of the lower cover.