JP4206824B2

JP4206824B2 - Cable rack cover

Info

Publication number: JP4206824B2
Application number: JP2003144011A
Authority: JP
Inventors: 昌敏坂下; 卓実上田; 敏泰中積
Original assignee: Panasonic Corp; Matsushita Electric Works Ltd
Current assignee: Panasonic Corp; Panasonic Electric Works Co Ltd
Priority date: 2003-05-21
Filing date: 2003-05-21
Publication date: 2009-01-14
Anticipated expiration: 2023-05-21
Also published as: JP2004350396A

Description

【０００１】
【発明の属する技術分野】
本発明は、内部にケーブルが通線支持されるケーブルラックの上面開口に装着されてこの上面開口を塞ぐように覆うケーブルラックのカバーに関し、詳しくはケーブルラックのうち直線状でない、平面視の形状がＴ字状、十字状の非直線状の部分を覆う非直線状のケーブルラックのカバーに関するものである。
【０００２】
【従来の技術】
一般に、ケーブルラックは梯子形状や偏平溝型等の形状に形成されて上面が開口しており、その内部には長手方向に沿ってケーブルが載置配線される。そして、ケーブルラックの内部に雨水やごみ等が浸入しないようにするため、必要に応じてケーブルラックの上面開口にはカバーが装着される。
【０００３】
このケーブルラックのカバーＣとしては、図１７に示すように内部に複数本のケーブル１が通線支持されるケーブルラック２の上面開口に装着されて、この上面開口を塞ぐものが知られている（例えば特許文献１参照）。このケーブルラックのカバーＣでは、カバー本体３が下方へ開口した偏平溝型に形成され、ケーブルラック２の上面開口に被されて装着される。一方、ケーブルラック２は梯子形状に形成され、両側の平行な親桁４の下縁付近間に複数の子桁５が架設固定され、上面が開口したものとなっている。ケーブルラック２の内部で通線支持される複数本のケーブル１は、複数本の子桁５上に掛け渡して載置される（所謂、ころがし配線される）ようになっている。
【０００４】
また上記ケーブルラックのカバーＣでは、カバー本体３が上板部６とその両側で一体に垂下する側板部７とでなり、カバー本体３の上面となる上板部６の表面は平坦面である。そしてケーブルラック２の上面開口に装着されるカバーＣは、クランプ材８、Ｌ型のボルト９及びナット１０でケーブルラック２に取り付け固定される。その際、クランプ材８をカバー本体３の上面に当接して架設すると共に親桁４の下側にＬ型のボルト９の屈曲した下端部分を係合させ、このクランプ材８の両端部分に挿通させて、ボルト９の上端部分にナット１０を螺合させ、このナット１０を締め付けることにより。カバーＣはケーブルラック２に取り付け固定される。
【０００５】
そしてこのカバーＣは、ケーブルラック２の上面開口にその長手方向に並べられ相互に近接されるように装着される。従って、複数並設されるカバーＣによって、ケーブルラック２の上面開口は長手方向に亙って塞がれ、ケーブルラック２内への雨水やごみ等の浸入を防止することができるようになっている。
【０００６】
【特許文献１】
実公平１−１２４９３号公報
【０００７】
【発明が解決しようとする課題】
ところで、上記従来例に図示されたカバーＣはケーブルラック２の直線状の部分に取り付けるもので、直線状のカバーＣ１であるが、ケーブルラック２の直線状以外である非直線状の部分にはその形状に応じた非直線状のカバーが取り付けられる。つまり、ケーブルラックの非直線状の部分としては、平面視大略Ｌ字状、Ｔ字状、十字状等の部分があるが、この部分に取り付ける非直線状のカバーもこの形状に合わせて平面視大略Ｌ字状、Ｔ字状、十字状等の非直線状に形成される。
【０００８】
このような平面視大略Ｌ字状、Ｔ字状、十字状等の非直線状のカバーも直線状のカバーＣ１と同様にプレス加工で形成されるのであるが、このような非直線状のカバーは大きさの大きいものであり、全体を一体にプレスで成形しようとすると、大型の金型を要し、コストがかかるという問題がある。また非直線状のカバーは多種類の形状があると共に多種類のサイズがあり、形状毎やサイズ毎や多種類の大型の金型を要し、コストが一層かかるという問題がある。また上記のような非直線状のカバーは大きさが大きくなると共に形状が複雑になることで取り扱い性や施工性が悪いという問題もある。
【０００９】
本発明は上記の点に鑑みてなされたものであり、直線部の部材を共用して袖部の部材を連結するだけで非直線状のカバーを組み立てることができ、またプレス成形する金型が大型にならないと共に金型の種類も少なくできて製造の効率化を図ることができるケーブルラックのカバーを提供するにある。
【００１０】
【課題を解決するための手段】
上記課題を解決するための本発明のケーブルラックのカバーは、平面視の形状がＴ字状、十字状の非直線状に形成されるケーブルラックのカバーであって、直線部と袖部とに分割されると共に前記袖部の連結する縁部には軸部が下から挿通して上方に突出する雄ねじ部材が保持され、雄ねじ部材の軸部には保護チューブが被せられており、前記直線部の連結する縁部は貫通孔を有し、袖部の連結する縁部の上に直線部の連結する縁部を載せて雄ねじ部材の前記保護チューブが被せられている軸部に直線部の貫通孔を挿通し、且つ保護チューブを取り外した状態で軸部に雌ねじ部材を締結することで直線部と袖部とを連結して組み立てられたことを特徴とする。このようにすることで、直線部の部材を共用して袖部の部材を連結するだけで非直線状のカバーを組み立てることができ、部材の共用や製造の効率化を図ることができる。また部材を成形する金型が大型にならないと共に金型の種類を減らすことができ、この点でも製造の効率化を図ることができる。また前記袖部には軸部が上方に突出する雄ねじ部材が保持され、前記直線部は貫通孔を有し、雄ねじ部材の軸部を貫通孔に挿通させて雄ねじ部材に雌ねじ部材を締結することで、袖部と直線部とを簡略に連結して組み立てることができる。
【００１１】
また前記袖部は、異なる平面視形状のカバー間で共用可能なように形成されたことを特徴とすることも好ましい。この場合、袖部の部材を共用して異なる平面視形状の非直線状のカバーを組み立てることができ、袖部の部材の製造の効率化を図ることができる。
【００１２】
また前記袖部と直線部との連結部分に補強バーを配設したことを特徴とすることも好ましい。この場合、袖部と直線部との連結部の強度を向上できる。
【００１３】
また前記補強バーと袖部とは、袖部の上面から補強バーまで止めねじを打入してねじ止めされると共にそのねじ止め部分を隠蔽する上方に凸曲する突部を直線部に設けたことを特徴とすることも好ましい。直線部と袖部とを組み立てたとき上方に凸曲する突部でねじ止め部を隠蔽することができ、美観や安全性を確保できる。
【００１４】
また前記直線部と袖部とは現場で連結して組み立て可能なようにされたことを特徴とすることも好ましい。この場合、大きさの小さい状態で現場に運んで組み立てることができ、取り扱い性や施工性を向上できる。
【００１５】
【発明の実施の形態】
ケーブルラックのカバーＣとしてはケーブルラック２の直線部に装着する直線部用のカバーＣ１とケーブルラック２の非直線部に装着する非直線部用のカバーＣ２とがある。本発明は非直線部用のカバーＣ２を対象とするが、便宜上、直線部用のカバーＣ１の基本構成から説明する。
【００１６】
図３、図４はケーブルラック２の直線状の部分に装着する直線状のカバーＣ１の基本構成を示すものである。このカバーＣ１の主体となるカバー本体３は表面にエポキシ系の粉体塗料が塗布された鋼板、表面に溶融亜鉛メッキ処理が施された鋼板、ステンレス鋼板等で下方へ開口した偏平溝型に形成されている。このカバー本体３は上板部６とその両側で一体に垂下された側板部７とで形成され、カバー本体３の上面となる上板部６の表面は平坦面となっている。またカバー本体３はプレス加工により偏平溝型に成形されるもので、その際、カバー本体３には補強用の突部１１が上方に凸曲するように成形される。
【００１７】
この突部１１はカバー本体３の長手方向と直交する端縁１２と平行になるようにカバー本体３の幅方向の全長に亙って形成され、突部１１の長手方向の両端部は平面視円弧状になっている。この突部１１は下方を開口せる断面略逆Ｕ字状または断面略コ字状に形成されている。
【００１８】
一方、ケーブルラック２は図５に示すように梯子状に形成されており、両側の親桁４の下縁付近間に子桁５が架設されており、上面が開口したものとなっている。そして、ケーブルラック２の内部で通線支持される複数本のケーブル１は、複数の子桁５上に掛け渡すように載置されて（所謂、ころがし配線されて）いる。この場合、ケーブルラック２は梯子形状のものに限られず、上方へ開口した偏平溝型のものであってもよい。
【００１９】
そして、カバーＣ１は、ケーブルラック２の上面開口にその長手方向に複数並べられ相互に近接されるように装着される。またケーブルラック２に装着されるカバーＣ１は図５に示すようにその両側でクリップ具１３で挟持されることによりケーブルラック２に取り付け固定されるものである。図６に示すようにクリップ具１３は略コ字型で上下に対向する側片１３ａ，１３ｂのうち上に位置する側片１３ａにねじ穴１３ｃが穿孔され、このねじ穴１３ｃに止めねじ１４を螺合挿入されている。そしてクリップ具１３の下の側片１３ｂをケーブルラック２の親桁４の下側に係合させると共に上の側片１３ａをカバーＣの上面に上に配置させて、この上の側片１３ａの止めねじ１４を締め付けることにより、止めねじ１４の先端がカバーＣ１の上面に圧接され、カバーＣ１はケーブルラック２に取り付け固定される。上記基本構成の場合、上記のようなクリップ具１３にてケーブルラック２にカバーＣ１を取り付けたが、従来例で述べたような手段でカバーＣ１を取り付けてもその他の手段でカバーＣ１を取り付けてもよい。
【００２０】
上記のようにカバーＣ１には突部１１が幅方向に亙って設けられているためにカバーＣ１は幅方向の中央部が凹むように撓むのが防止され、カバーＣ１の上に雨が降っても雨水の川ができるようになったりしなく、しかも突部１１にて雨水が堰止められて隣合うカバーＣの継ぎ目に雨水が流れず、ケーブルラック２内部に雨水が浸入するのが確実に防止される。
【００２１】
ところで、カバーＣにはプレス加工するとき幅方向の全長に亙って上方に凸曲した突部１１が形成されるが、この突部１１の高さを図７に示すように幅方向の全長に亙って同じ高さとすると、図７のＡ方向（突部１１の長手方向と直交する方向）及びＢ方向（突部１１の長手方向と平行な方向）の歪が大（しわ大）となる。これをなくすために図８に示すように突部１１の長手方向の両端部を持ち上げ高さが他の部分より高くした部分１１ａを形成することが好ましい。本基本構成の場合、このように端部を高くした部分１１ａは端部から中央に向けて徐々に低くなるように傾斜している。このように端部を高くした部分１１ａを形成すると、端部方向にしわを引っ張ることとなり、Ａ方向の歪を極小とすると共にＢ方向の歪を小とすることができる。
【００２２】
さらに図８のように端部を高くした部分１１ａを形成した上に図９に示すように突部１１の長手方向の中央部分に中央部分が他の部分より高くなるように持ち上げることにより高くした部分１１ｂを形成することも好ましい。本基本構成の場合、中央部分の高さを高くした部分１１ｂは角錐状に突出している。このように中央部分の高さを高くした部分１１ｂを形成すると、中央部分にしわを引っ張ることとなり、Ａ方向の歪を極小とすると共にＢ方向の歪を極小とでき、さらに中央部分の強度をアップできる。
【００２３】
直線状のカバーＣ１は上述のように構成されているが、以下、平面視の形状がＬ字状、Ｔ字状、十字状の非直線状の部分に取り付ける本発明のカバーＣ２について述べる。この非直線状のカバーＣ２も突部１１を設ける構造は直線状のカバーＣ１と同じである。
【００２４】
まず、図１、図２に示す非直線状のカバーＣ２の基本構成から述べる。本基本構成は外直角水平エルボと称されるカバーＣ２で平面視の形状がＬ字状になっており、外隅部が直角になっていると共に内隅部が円弧状になっている。上記のような形状の非直線状のカバーＣ２が矩形状の直線部１７と円弧状の縁部のある袖部１８とに分割されており、直線部１７及び袖部１８に夫々図９に示すような突部１１を設けてある。かかる直線部１７は前述した直線状のカバーＣ１と基本的に同じ構造である。この直線部１７と袖部１８とは縁部同士を重ねて連結するのであるが、袖部１８の方が下になるように重ねて連結される。袖部１８の連結する縁部には雄ねじ部材としてのボルト１９を下から挿通してボルト１９の頭部１９ａを係止させると共にボルト１９の軸部を上方に突出させてある。一方直線部１７の連結する縁部には貫通孔を穿孔してあり、この貫通孔にボルト１９の軸部を挿通し、雌ねじ部材としてのナット２０を軸部に螺合して締結してある。このようにカバーＣ２が直線部１７と袖部１８に分割してあると、他のカバーＣ２と直線部１７の部材を共用できると共に製造の効率化を図ることができる。図１に示すカバーＣ２は幅が中間程度のものであり、カバーＣ２の全般に亙って突部１１を設けてある。
【００２５】
次に図１０、図１１に示す非直線状のカバーＣ２の基本構成について述べる。本基本構成も外直角水平エルボと称されるカバーＣ２で平面視の形状がＬ字状になっており、またカバーＣ２が矩形状の直線部１７と円弧状の縁部のある袖部１８とに分割されており、直線部１７及び袖部１８に夫々図９に示すような突部１１を設けてある。本基本構成のカバーＣ２は図１に示すカバーよりさらに幅の広いものであり、直線部１７にさらに本数の多い突部１１を設けてある。また袖部１８の連結する部分の裏面側に補強バー２１を沿わせてあり、袖部１８の上面から補強バー２１まで止めねじ２２を打入して連結する縁の部分の略全長に亙って補強バー２１を装着してある。この止めねじ２２を打入する位置は直線部１７の突部１１に対応する位置である。そして直線部１７の連結する縁部の下に袖部１８の連結する縁部を重ねたとき止めねじ２２の頭部が直線部１７の突部１１内に収まり、直線部１７と袖部１８とを連結した止めねじ２２による止め部分が隠蔽される。また袖部１８の連結する縁部には雄ねじ部材としてのボルト１９を下から挿通してボルト１９の頭部１９ａを係止させると共にボルト１９の軸部を上方に突出させてある。一方直線部１７の連結する縁部には貫通孔を穿孔してあり、この貫通孔にボルト１９の軸部を挿通し、雌ねじ部材としてのナット２０を軸部に螺合して締結してある。
【００２６】
図１０に示すようなカバーＣは工場で直線部１７と袖部１８とを連結して組み立てこの組み立て状態で現場に搬送して取り付け施工してもよいが、直線部１７と袖部１８とを分解した状態で現場に搬送し、現場で直線部１７と袖部１８とを別々にケーブルラック２に取り付けて直線部１７と袖部１８とを連結してもよい。つまり、図１２（ａ）に示すようなケーブルラック２の上に図１２（ｂ）に示すように袖部１８を載せる。このとき、袖部１８にはボルト１９を予め取り付けてあり、軸部を上方に突出させてあるが、この軸部には保護チューブを被せてある。袖部１８を載せた後、図１２（ｃ）に示すようにケーブルラック２に直線部１７を載せて袖部１８の連結する縁部の上に直線部１７の連結する縁部を載せ、ボルト１９の軸部に直線部１７の貫通孔を挿通し、軸部の保護チューブを取り外し、軸部にナット２０を螺合して図１２（ｄ）のように直線部１７と袖部１８とを締結する。
【００２７】
次に図１３に示す非直線状のカバーＣ２の基本構成について述べる。本基本構成は水平ティーと称されるカバーＣ２で平面視の形状がＴ字状になっており、内隅部が円弧状になっている。上記のような形状のカバーＣ２が矩形状の直線部１７と円弧状の縁部のある袖部１８とに分割されており、直線部１７及び袖部１８に夫々図９に示すような突部１１を設けてある。この直線部１７と袖部１８とは図１、図２に示す基本構成と同様に縁部同士を重ね、ボルト１９とナット２０にて連結してある。図１３に示すカバーＣ２は幅が中間程度のものであり、カバーＣ２の全般に亙って突部１１を設けてある。
【００２８】
次に図１４に示す本発明の一実施形態の非直線状のカバーＣ２の例について述べる。本実施形態も水平ティーと称されるカバーＣ２で平面視の形状がＴ字状になっており、またカバーＣ２が矩形状の直線部１７と円弧状の縁部のある袖部１８とに分割されており、直線部１７及び袖部１８に夫々図９に示すような突部１１を設けてある。本実施形態のカバーＣ２は図１３に示すカバーＣよりさらに幅の広いものであり、直線部１７にさらに本数の多い突部１１を設けてある。また図１０や図１１の基本構成と同様に袖部１８の連結する部分の裏面側に補強バー２１を沿わせてあり、袖部１８の上面から補強バー２１まで止めねじ２２を打入して連結する縁の部分の略全長に亙って補強バー２１を装着してある。また直線部１７と袖部１８とは図１０や図１１の基本構成と同様に縁部同士を重ね、ボルト１９とナット２０にて連結してある。
【００２９】
次に図１５に示す本発明の更に他の実施形態の非直線状のカバーＣ２の例について述べる。本実施形態は水平クロスと称されるカバーＣ２で平面視の形状が十字状になっており、隅部が円弧状になっている。上記のような形状のカバーＣ２が矩形状の直線部１７と円弧状の縁部のある一対の袖部１８とに分割されており、直線部１７及び袖部１８に夫々図９に示すような突部１１を設けてある。この直線部１７と袖部１８とは図１、図２に示す基本構成と同様に縁部同士を重ね、ボルト１９とナット２０にて連結してある。図１５に示すカバーＣ２は幅が中間程度のものであり、カバーＣ２の全般に亙って突部１１を設けてある。また本実施形態のカバーＣ２の袖部１８は図１３に示すカバーＣの袖部１８と同じものであり、部材を共用できる。
【００３０】
次に図１６に示す本発明の更に他の実施形態の非直線状のカバーＣ２の例について述べる。本実施形態も水平クロスと称されるカバーＣ２で平面視の形状が十字状になっており、またカバーＣ２が矩形状の直線部１７と円弧状の縁部のある一対の袖部１８とに分割されており、直線部１７及び袖部１８に夫々図９に示すような突部１１を設けてある。本実施形態のカバーＣは図１７に示すカバーＣ２よりさらに幅の広いものであり、直線部１７にさらに本数の多い突部１１を設けてある。また図１０や図１１の基本構成と同様に袖部１８の連結する部分の裏面側に補強バー２１を沿わせてあり、袖部１８の上面から補強バー２１まで止めねじ２２を打入して連結する縁の部分の略全長に亙って補強バー２１を装着してある。また直線部１７と袖部１８とは図１０や図１１の基本構成と同様に縁部同士を重ね、ボルト１９とナット２０にて連結してある。また本実施形態のカバーＣ２の袖部１８も図１４に示すカバーＣ２の袖部１８と同じであり、部材を共用できる。
【００３１】
なお、上記の非直線状のカバーＣ２の例では補強バー２１を袖部１８に取り付けることについて説明したが、この補強バー２１は直線部１７に取り付ける場合も、直線部１７と袖部１８の両方に取り付ける場合もある。
【００３２】
【発明の効果】
本発明は、叙述の如く直線部の部材を共用して袖部の部材を連結するだけで非直線状のカバーを組み立てることができ、部材の共用や製造の効率化を図ることができるものであり、また部材を成形する金型が大型にならないと共に金型の種類を減らすことができ、この点でも製造の効率化を図ることができるものである。さらに袖部と直線部とを簡略に連結して組み立てることができるものである。
【図面の簡単な説明】
【図１】本発明の基本構成の非直線部のカバーの一例を示し、（ａ）平面図、（ｂ）は正面図、（ｃ）は側面図、（ｄ）は（ａ）のＪ−Ｊ′線断面図である。
【図２】（ａ）は図１（ｄ）のＫ５部拡大断面図、（ｂ）は図１（ｄ）のＫ１部拡大断面図、（ｃ）は図１（ｄ）のＫ２、Ｋ３、Ｋ４部拡大断面図である。
【図３】直線部のカバーを示し、（ａ）は平面図、（ｂ）は正面図、（ｃ）は（ａ）のＤ−Ｄ′線断面図、（ｄ）は（ａ）のＥ−Ｅ′−Ｅ″線断面図である。
【図４】（ａ）は図３（ｄ）のＦ部拡大図、（ｂ）は図３（ａ）のＧ−Ｇ′線断面図、（ｃ）は図３（ａ）のＨ−Ｈ′線断面図、（ｄ）は図３（ａ）のＩ−Ｉ′線断面図である。
【図５】同上のカバーをケーブルラックに取り付けた状態の斜視図である。
【図６】同上のクリップ具の斜視図である。
【図７】同上の突部の加工を説明するための図で、（ａ）は断面図、（ｂ）は平面図である。
【図８】同上の突部の加工を説明するための図で、（ａ）は断面図、（ｂ）は平面図である。
【図９】同上の突部の加工を説明するための図で、（ａ）は断面図、（ｂ）は平面図である。
【図１０】同上の非直線状のカバーの他の基本構成を示し、（ａ）平面図、（ｂ）は正面図、（ｃ）は側面図、（ｄ）は（ａ）のＬ−Ｌ′線断面図である。
【図１１】（ａ）は図１０（ｄ）のＭ４部拡大断面図、（ｂ）は図１０（ｄ）のＭ１部大断面図、（ｃ）は図１０（ｄ）のＭ２、Ｍ３部拡大断面図である。
【図１２】（ａ）（ｂ）（ｃ）（ｄ）は同上のカバーの袖部と直線部とを別々に取り付ける状態を説明する平面図である。
【図１３】同上の非直線状のカバーの他の基本構成を示し、（ａ）は平面図、（ｂ）は正面図、（ｃ）は側面図である。
【図１４】本発明の一実施形態の非直線状のカバーの他の実施形態を示し、（ａ）は平面図、（ｂ）は正面図、（ｃ）は側面図である。
【図１５】同上の非直線状のカバーの他の実施形態を示し、（ａ）は平面図、（ｂ）は正面図、（ｃ）は側面図である。
【図１６】同上の非直線状のカバーの他の実施形態を示し、（ａ）は平面図、（ｂ）は正面図、（ｃ）は側面図である。
【図１７】従来例を示す分解斜視図である。
【符号の説明】
Ｃ２非直線状のカバー
２ケーブルラック
１１突部
１７直線部
１８袖部
１９ボルト
２０ナット
２１補強バー[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a cable rack cover that is attached to and covers an upper surface opening of a cable rack in which cables are internally supported, and specifically covers a shape of the cable rack that is not linear and in plan view. Relates to the cover of the non-linear cable rack that covers the T-shaped, cross-shaped non-linear portion.
[0002]
[Prior art]
In general, a cable rack is formed in a ladder shape, a flat groove shape, or the like and has an upper surface opened, and a cable is placed and wired along the longitudinal direction inside the cable rack. Then, a cover is attached to the upper surface opening of the cable rack as necessary in order to prevent rainwater or dust from entering the inside of the cable rack.
[0003]
As the cable rack cover C, as shown in FIG. 17, there is known a cover that is attached to an upper surface opening of a cable rack 2 through which a plurality of cables 1 are supported and that closes the upper surface opening. (For example, refer to Patent Document 1). In the cover C of the cable rack, the cover body 3 is formed in a flat groove shape opened downward, and is attached to the upper surface opening of the cable rack 2. On the other hand, the cable rack 2 is formed in a ladder shape, and a plurality of sub beams 5 are installed and fixed between the lower edges of the parallel main beams 4 on both sides, and the upper surface is opened. A plurality of cables 1 that are supported through the inside of the cable rack 2 are placed on a plurality of child beams 5 so as to be placed (so-called rolling wiring).
[0004]
In the cover C of the cable rack, the cover body 3 is composed of the upper plate portion 6 and the side plate portions 7 that hang down integrally on both sides thereof, and the surface of the upper plate portion 6 that is the upper surface of the cover body 3 is a flat surface. . The cover C attached to the upper surface opening of the cable rack 2 is attached and fixed to the cable rack 2 with the clamp material 8, L-shaped bolts 9 and nuts 10. At that time, the clamp member 8 is installed in contact with the upper surface of the cover body 3, and the bent lower end portion of the L-shaped bolt 9 is engaged with the lower side of the main beam 4, and the clamp member 8 is inserted into both end portions. Then, the nut 10 is screwed into the upper end portion of the bolt 9 and the nut 10 is tightened. The cover C is attached and fixed to the cable rack 2.
[0005]
The cover C is attached to the upper surface opening of the cable rack 2 so as to be arranged in the longitudinal direction and close to each other. Accordingly, the plurality of covers C arranged side by side cover the upper surface opening of the cable rack 2 in the longitudinal direction, and can prevent rainwater, dust, and the like from entering the cable rack 2. Yes.
[0006]
[Patent Document 1]
Japanese Utility Model Publication No. 1-12493 [0007]
[Problems to be solved by the invention]
By the way, the cover C illustrated in the above-described conventional example is attached to the linear portion of the cable rack 2 and is a linear cover C1, but the non-linear portion other than the linear shape of the cable rack 2 A non-linear cover corresponding to the shape is attached. In other words, the non-linear portion of the cable rack includes a substantially L-shaped, T-shaped, cross-shaped portion, etc. in plan view. The non-linear cover attached to this portion also has a plan view in accordance with this shape. It is generally formed in a non-linear shape such as an L shape, a T shape, or a cross shape.
[0008]
Such a non-linear cover such as a substantially L-shape, T-shape, or cross shape in plan view is formed by pressing in the same manner as the linear cover C1, but such a non-linear cover is also provided. Has a large size, and there is a problem that, if it is attempted to form the whole by means of a press, a large mold is required and the cost is high. Further, the non-linear cover has many kinds of shapes and many kinds of sizes, and there is a problem that costs are further increased because each shape, each size, and many kinds of large molds are required. In addition, the non-linear cover as described above has a problem that handling and construction are poor because the size and the shape of the cover are complicated.
[0009]
The present invention has been made in view of the above points, and it is possible to assemble a non-linear cover simply by connecting a member of a sleeve portion while sharing a member of a straight portion. The object of the present invention is to provide a cable rack cover that is not large in size and that can reduce the types of molds and increase the efficiency of manufacturing.
[0010]
[Means for Solving the Problems]
The cable rack cover of the present invention for solving the above-mentioned problems is a cable rack cover formed in a non-linear shape with a T-shape and a cross shape in plan view, and includes a straight portion and a sleeve portion. A male screw member that is divided and is connected to the sleeve portion and from which the shaft portion is inserted from below and protrudes upward is held, and the shaft portion of the male screw member is covered with a protective tube, and the straight portion The connecting edge portion has a through hole, and the connecting edge portion of the straight portion is placed on the connecting edge portion of the sleeve portion, and the straight portion penetrates the shaft portion on which the protective tube of the male screw member is covered. The straight part and the sleeve part are connected and assembled by fastening the female screw member to the shaft part with the hole inserted and the protective tube removed . By doing in this way, a non-linear cover can be assembled only by connecting the member of a sleeve part, sharing the member of a straight part, and sharing of a member and improvement in manufacture efficiency can be aimed at. Further, the mold for molding the member does not become large and the types of molds can be reduced. In this respect as well, the production efficiency can be improved. The sleeve portion holds a male screw member whose shaft portion protrudes upward, the straight portion has a through hole, and the male screw member is fastened to the male screw member by inserting the shaft portion of the male screw member into the through hole. Thus, the sleeve portion and the straight portion can be simply connected and assembled.
[0011]
Further, it is also preferable that the sleeve portion is formed so as to be shared between covers having different shapes in plan view. In this case, it is possible to assemble a non-linear cover having a different shape in plan view by sharing the member of the sleeve portion, and it is possible to improve the efficiency of manufacturing the member of the sleeve portion.
[0012]
It is also preferable that a reinforcing bar is disposed at a connecting portion between the sleeve portion and the straight portion. In this case, the strength of the connecting portion between the sleeve portion and the straight portion can be improved.
[0013]
Further, the reinforcing bar and the sleeve portion are screwed by driving a set screw from the upper surface of the sleeve portion to the reinforcing bar, and provided with a protruding portion that protrudes upward to conceal the screwed portion in the linear portion. It is also preferable to be characterized by this. When the straight portion and the sleeve portion are assembled, the screwing portion can be concealed by a protruding portion that curves upward, and aesthetics and safety can be ensured.
[0014]
In addition, it is preferable that the straight part and the sleeve part be connected and assembled on site. In this case, it can be carried to the site in a small size and assembled, and the handleability and workability can be improved.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
As the cable rack cover C, there are a straight part cover C1 attached to the straight part of the cable rack 2 and a non-straight part cover C2 attached to the non-straight part of the cable rack 2. The present invention is directed to the cover C2 for the non-linear portion, but for the sake of convenience, the basic configuration of the cover C1 for the linear portion will be described.
[0016]
3 and 4 show a basic configuration of the linear cover C1 attached to the linear portion of the cable rack 2. FIG. The cover main body 3 which is the main body of the cover C1 is formed in a flat groove type opened downward with a steel plate coated with an epoxy powder coating on the surface, a steel plate coated with hot dip galvanizing on the surface, a stainless steel plate and the like. Has been. The cover body 3 is formed of an upper plate portion 6 and side plate portions 7 that are integrally suspended on both sides thereof, and the surface of the upper plate portion 6 that is the upper surface of the cover body 3 is a flat surface. Further, the cover body 3 is formed into a flat groove mold by pressing, and at this time, the reinforcing protrusion 11 is formed on the cover body 3 so as to bend upward.
[0017]
The protrusion 11 is formed over the entire length of the cover body 3 in the width direction so as to be parallel to the edge 12 orthogonal to the longitudinal direction of the cover body 3, and both ends of the protrusion 11 in the longitudinal direction are viewed in plan view. It has an arc shape. The protrusion 11 is formed in a substantially inverted U-shaped section or a substantially U-shaped section that opens downward.
[0018]
On the other hand, the cable rack 2 is formed in a ladder shape as shown in FIG. 5, and a child girder 5 is installed near the lower edge of the parent girder 4 on both sides, and the upper surface is open. Then, the plurality of cables 1 that are supported through the cable rack 2 are placed so as to hang over the plurality of sub beams (so-called rolling wiring). In this case, the cable rack 2 is not limited to a ladder shape, and may be a flat groove type opening upward.
[0019]
Then, a plurality of covers C1 are mounted in the upper surface opening of the cable rack 2 so as to be arranged in the longitudinal direction and close to each other. Further, as shown in FIG. 5, the cover C1 attached to the cable rack 2 is attached and fixed to the cable rack 2 by being sandwiched by clip devices 13 on both sides thereof. As shown in FIG. 6, the clip device 13 is substantially U-shaped, and a screw hole 13c is drilled in the upper side piece 13a of the side pieces 13a, 13b facing vertically, and a set screw 14 is inserted into the screw hole 13c. Screwed and inserted. Then, the lower side piece 13b of the clip device 13 is engaged with the lower side of the main beam 4 of the cable rack 2, and the upper side piece 13a is arranged on the upper surface of the cover C so that the upper side piece 13a By tightening the set screw 14, the tip of the set screw 14 is pressed against the upper surface of the cover C 1, and the cover C 1 is attached and fixed to the cable rack 2. In the case of the above basic configuration, the cover C1 is attached to the cable rack 2 with the clip tool 13 as described above. However, even if the cover C1 is attached by means as described in the conventional example, the cover C1 is attached by other means. Also good.
[0020]
As described above, since the protrusion 11 is provided in the width direction on the cover C1, the cover C1 is prevented from being bent so that the central portion in the width direction is recessed, and rain is formed on the cover C1. Even if it falls, it will not be possible to form a river of rainwater, and rainwater will be blocked by the protrusion 11 so that rainwater will not flow into the joint of the adjacent cover C, and rainwater will enter the inside of the cable rack 2. It is surely prevented.
[0021]
By the way, the cover C is formed with a protruding portion 11 that is curved upward over the entire length in the width direction during press working. The height of the protruding portion 11 is the entire length in the width direction as shown in FIG. If the height is the same, the distortion in the direction A (direction perpendicular to the longitudinal direction of the protrusion 11) and the direction B (direction parallel to the longitudinal direction of the protrusion 11) in FIG. Become. In order to eliminate this, as shown in FIG. 8, it is preferable to form a portion 11a in which both ends in the longitudinal direction of the protrusion 11 are lifted and the height is higher than that of the other portions. In the case of this basic configuration, the portion 11a having the raised end is inclined so as to gradually become lower from the end toward the center. When the portion 11a having the raised end portion is formed in this way, wrinkles are pulled in the end portion direction, so that the distortion in the A direction can be minimized and the distortion in the B direction can be reduced.
[0022]
Further, as shown in FIG. 8, a portion 11a having a raised end is formed, and the height is increased by lifting the central portion of the protrusion 11 in the longitudinal direction so that the central portion is higher than the other portions as shown in FIG. It is also preferable to form the portion 11b. In the case of this basic configuration, the portion 11b in which the height of the central portion is increased protrudes in a pyramid shape. When the portion 11b having the height of the central portion is formed in this way, wrinkles are pulled in the central portion, the strain in the A direction can be minimized, the strain in the B direction can be minimized, and the strength of the central portion can be further reduced. Can be up.
[0023]
Although the linear cover C1 is configured as described above, the cover C2 of the present invention attached to a non-linear portion having a L shape, a T shape, or a cross shape in plan view will be described below. This non-linear cover C2 has the same structure as the linear cover C1 in which the protrusion 11 is provided.
[0024]
First, the basic configuration of the non-linear cover C2 shown in FIGS. 1 and 2 will be described. This basic configuration is a cover C2 called an outer right-angled horizontal elbow, and the shape in plan view is L-shaped, the outer corner is right-angled and the inner corner is arcuate. The non-linear cover C2 having the above-described shape is divided into a rectangular straight portion 17 and a sleeve portion 18 having an arcuate edge, and the straight portion 17 and the sleeve portion 18 are shown in FIG. Such a protrusion 11 is provided. The linear portion 17 has basically the same structure as the linear cover C1 described above. The straight line portion 17 and the sleeve portion 18 are connected so that the edge portions overlap each other, but the sleeve portion 18 is overlapped so that the sleeve portion 18 is on the lower side. A bolt 19 as a male screw member is inserted from below at the edge portion to which the sleeve portion 18 is connected to lock the head portion 19a of the bolt 19 and the shaft portion of the bolt 19 protrudes upward. On the other hand, a through-hole is drilled in an edge portion to which the straight portion 17 is connected, and a shaft portion of a bolt 19 is inserted into the through-hole, and a nut 20 as a female screw member is screwed to the shaft portion and fastened. . Thus, when the cover C2 is divided into the straight portion 17 and the sleeve portion 18, the members of the other cover C2 and the straight portion 17 can be shared, and the manufacturing efficiency can be improved. The cover C2 shown in FIG. 1 has an intermediate width, and a protrusion 11 is provided over the entire cover C2.
[0025]
Next, the basic configuration of the non-linear cover C2 shown in FIGS. 10 and 11 will be described. This basic configuration is also a cover C2 called an outer right-angled horizontal elbow, and the shape in plan view is L-shaped, and the cover C2 includes a rectangular straight portion 17 and a sleeve portion 18 having an arcuate edge. 9 are provided on the straight line portion 17 and the sleeve portion 18, respectively, as shown in FIG. The cover C2 of this basic configuration is wider than the cover shown in FIG. 1, and more protrusions 11 are provided on the straight line portion 17. Further, a reinforcing bar 21 is provided on the back side of the portion to which the sleeve portion 18 is connected, and a set screw 22 is driven from the upper surface of the sleeve portion 18 to the reinforcing bar 21 so as to extend over substantially the entire length of the edge portion to be connected. A reinforcing bar 21 is attached. The position where the set screw 22 is driven is a position corresponding to the protrusion 11 of the linear portion 17. When the edge to which the sleeve 18 is connected is overlapped below the edge to which the straight part 17 is connected, the head of the set screw 22 is accommodated in the protrusion 11 of the straight part 17, and the straight part 17, the sleeve 18, The stop portion by the set screw 22 connected to each other is concealed. Further, a bolt 19 as a male screw member is inserted from below at the edge portion to which the sleeve portion 18 is connected, and the head portion 19a of the bolt 19 is locked, and the shaft portion of the bolt 19 is protruded upward. On the other hand, a through-hole is drilled in an edge portion to which the straight portion 17 is connected, and a shaft portion of a bolt 19 is inserted into the through-hole, and a nut 20 as a female screw member is screwed to the shaft portion and fastened. .
[0026]
The cover C as shown in FIG. 10 is assembled by connecting the straight portion 17 and the sleeve portion 18 at the factory and may be transported and installed in the assembled state, but the straight portion 17 and the sleeve portion 18 may be attached. The disassembled state may be transported to the site, and the straight portion 17 and the sleeve portion 18 may be separately attached to the cable rack 2 and connected to the straight portion 17 and the sleeve portion 18 at the site. That is, the sleeve 18 is placed on the cable rack 2 as shown in FIG. 12A as shown in FIG. At this time, a bolt 19 is attached to the sleeve portion 18 in advance, and the shaft portion protrudes upward. The shaft portion is covered with a protective tube. After the sleeve portion 18 is placed, the straight portion 17 is placed on the cable rack 2 as shown in FIG. 12C, and the edge portion to which the straight portion 17 is connected is placed on the edge portion to which the sleeve portion 18 is connected. The through-hole of the straight portion 17 is inserted into the shaft portion of 19, the protective tube of the shaft portion is removed, and the nut 20 is screwed to the shaft portion, so that the straight portion 17 and the sleeve portion 18 are connected as shown in FIG. Conclude.
[0027]
Next, the basic configuration of the non-linear cover C2 shown in FIG. 13 will be described. In this basic configuration, a cover C2 called a horizontal tee has a T-shape in plan view, and an inner corner portion has an arc shape. The cover C2 having the above-described shape is divided into a rectangular straight portion 17 and a sleeve portion 18 having an arcuate edge, and the straight portion 17 and the sleeve portion 18 have protrusions as shown in FIG. 11 is provided. The straight line portion 17 and the sleeve portion 18 are overlapped with each other in the same manner as in the basic configuration shown in FIGS. 1 and 2, and are connected by bolts 19 and nuts 20. The cover C2 shown in FIG. 13 has an intermediate width, and the protrusion 11 is provided over the entire cover C2.
[0028]
Next, an example of a non-linear cover C2 according to an embodiment of the present invention shown in FIG. 14 will be described. This embodiment is also a cover C2 called a horizontal tee, and the shape in plan view is T-shaped, and the cover C2 is divided into a rectangular straight portion 17 and a sleeve portion 18 having an arcuate edge. The protrusion 11 as shown in FIG. 9 is provided on each of the straight line portion 17 and the sleeve portion 18. The cover C2 of the present embodiment is wider than the cover C shown in FIG. 13, and a larger number of protrusions 11 are provided on the straight line portion 17. Similarly to the basic configuration of FIGS. 10 and 11, a reinforcing bar 21 is provided on the back side of the portion to which the sleeve portion 18 is connected, and a set screw 22 is driven from the upper surface of the sleeve portion 18 to the reinforcing bar 21. The reinforcing bar 21 is mounted over substantially the entire length of the edge portion to be connected. Further, the straight portion 17 and the sleeve portion 18 are overlapped with each other in the same manner as in the basic configuration of FIGS.
[0029]
Next, an example of a non-linear cover C2 according to still another embodiment of the present invention shown in FIG. 15 will be described. In the present embodiment, a cover C2 referred to as a horizontal cross has a cross shape in plan view, and corners have arc shapes. The cover C2 having the shape as described above is divided into a straight line portion 17 having a rectangular shape and a pair of sleeve portions 18 having an arcuate edge, and each of the straight portion 17 and the sleeve portion 18 has a shape as shown in FIG. A protrusion 11 is provided. The straight line portion 17 and the sleeve portion 18 are overlapped with each other in the same manner as in the basic configuration shown in FIGS. 1 and 2, and are connected by bolts 19 and nuts 20. The cover C2 shown in FIG. 15 has an intermediate width, and the protrusion 11 is provided over the entire cover C2. Moreover, the sleeve part 18 of the cover C2 of this embodiment is the same as the sleeve part 18 of the cover C shown in FIG. 13, and can share a member.
[0030]
Next, an example of a non-linear cover C2 according to still another embodiment of the present invention shown in FIG. 16 will be described. This embodiment is also a cover C2 called a horizontal cross, and the shape in plan view is a cross shape, and the cover C2 is formed by a rectangular straight portion 17 and a pair of sleeve portions 18 having arcuate edges. Each of the straight portions 17 and the sleeve portion 18 is provided with a protrusion 11 as shown in FIG. The cover C of the present embodiment is wider than the cover C2 shown in FIG. 17, and more protrusions 11 are provided on the linear portion 17. Similarly to the basic configuration of FIGS. 10 and 11, a reinforcing bar 21 is provided on the back side of the portion to which the sleeve portion 18 is connected, and a set screw 22 is driven from the upper surface of the sleeve portion 18 to the reinforcing bar 21. The reinforcing bar 21 is mounted over substantially the entire length of the edge portion to be connected. Further, the straight portion 17 and the sleeve portion 18 are overlapped with each other in the same manner as in the basic configuration of FIGS. Further, the sleeve portion 18 of the cover C2 of this embodiment is the same as the sleeve portion 18 of the cover C2 shown in FIG. 14, and members can be shared.
[0031]
In the example of the non-linear cover C2 described above, it has been described that the reinforcing bar 21 is attached to the sleeve portion 18. However, when the reinforcing bar 21 is attached to the straight portion 17, both the straight portion 17 and the sleeve portion 18 are provided. Sometimes it is attached to.
[0032]
【The invention's effect】
As described above, the present invention can assemble a non-linear cover simply by connecting the members of the sleeve portion while sharing the members of the straight portion, and can share the members and increase the efficiency of manufacturing. In addition, the mold for molding the member does not become large, and the types of molds can be reduced. Also in this respect, the manufacturing efficiency can be improved. Further, the sleeve portion and the straight portion can be simply connected and assembled.
[Brief description of the drawings]
FIG. 1 shows an example of a cover of a non-linear portion of the basic configuration of the present invention, (a) a plan view, (b) a front view, (c) a side view, and (d) a J- It is J 'sectional view.
2A is an enlarged cross-sectional view of a portion K5 in FIG. 1D, FIG. 2B is an enlarged cross-sectional view of a portion K1 in FIG. 1D, and FIG. 2C is a cross-sectional view of K2, K3 in FIG. It is K4 section expanded sectional view.
FIGS. 3A and 3B show a cover of a straight portion, FIG. 3A is a plan view, FIG. 3B is a front view, FIG. 3C is a cross-sectional view taken along the line DD ′ in FIG. -E'-E "line sectional view.
4A is an enlarged view of a portion F in FIG. 3D, FIG. 4B is a cross-sectional view taken along line GG ′ in FIG. 3A, and FIG. 4C is a cross-sectional view taken along line HH in FIG. FIG. 3D is a cross-sectional view taken along the line ′, and FIG.
FIG. 5 is a perspective view showing a state in which the cover is attached to the cable rack.
FIG. 6 is a perspective view of the clip device.
FIGS. 7A and 7B are diagrams for explaining the processing of the protrusions, in which FIG. 7A is a cross-sectional view, and FIG. 7B is a plan view;
FIGS. 8A and 8B are diagrams for explaining the processing of the protrusions, in which FIG. 8A is a cross-sectional view and FIG. 8B is a plan view;
FIGS. 9A and 9B are diagrams for explaining the processing of the protrusions, in which FIG. 9A is a cross-sectional view, and FIG. 9B is a plan view;
FIGS. 10A and 10B show other basic configurations of the above-described non-linear cover, where FIG. 10A is a plan view, FIG. 10B is a front view, FIG. 10C is a side view, and FIG. FIG.
11A is an enlarged cross-sectional view of M4 part of FIG. 10D, FIG. 11B is a large cross-sectional view of M1 part of FIG. 10D, and FIG. 11C is M2 and M3 part of FIG. It is an expanded sectional view.
FIGS. 12A, 12B, 12C, and 12D are plan views for explaining a state where the sleeve portion and the straight portion of the cover are attached separately.
FIGS. 13A and 13B show another basic configuration of the non-linear cover, wherein FIG. 13A is a plan view, FIG. 13B is a front view, and FIG. 13C is a side view.
14A and 14B show another embodiment of the non-linear cover according to the embodiment of the present invention, in which FIG. 14A is a plan view, FIG. 14B is a front view, and FIG. 14C is a side view.
FIGS. 15A and 15B show another embodiment of the non-linear cover, wherein FIG. 15A is a plan view, FIG. 15B is a front view, and FIG. 15C is a side view.
FIGS. 16A and 16B show another embodiment of the non-linear cover, wherein FIG. 16A is a plan view, FIG. 16B is a front view, and FIG. 16C is a side view.
FIG. 17 is an exploded perspective view showing a conventional example.
[Explanation of symbols]
C2 Non-linear cover 2 Cable rack 11 Protrusion 17 Straight line 18 Sleeve 19 Bolt 20 Nut 21 Reinforcing bar

Claims

A cable rack cover formed in a non-linear shape having a T-shape or a cross shape in plan view, which is divided into a straight portion and a sleeve portion, and a shaft portion is connected to an edge portion of the sleeve portion. A male screw member that is inserted from below and protrudes upward is held, a shaft portion of the male screw member is covered with a protective tube, and an edge portion to which the linear portion is connected has a through hole, and a sleeve portion is connected. Place the connecting edge of the straight part on the edge to be inserted, insert the through hole of the straight part into the shaft part where the protective tube of the male screw member is covered, and remove the protective tube to the shaft part. A cable rack cover assembled by connecting a straight portion and a sleeve portion by fastening a female screw member.

2. The cable rack cover according to claim 1, wherein the sleeve portion is formed so as to be shared between covers having different planar views.

The cable rack cover according to claim 1 or 2, wherein a reinforcing bar is disposed at a connecting portion between the sleeve portion and the straight portion.

The reinforcing bar and the sleeve portion are screwed by inserting a set screw from the upper surface of the sleeve portion to the reinforcing bar and provided with a protruding portion that protrudes upward to conceal the screwed portion in the linear portion. The cable rack cover according to claim 3.

The cable rack cover according to any one of claims 1 to 4, wherein the straight portion and the sleeve portion can be connected and assembled on site.