JP4571280B2

JP4571280B2 - Cable winding drum

Info

Publication number: JP4571280B2
Application number: JP2000222765A
Authority: JP
Inventors: 孝志後藤
Original assignee: Gifu Plastic Industry Co Ltd
Current assignee: Gifu Plastic Industry Co Ltd
Priority date: 2000-07-24
Filing date: 2000-07-24
Publication date: 2010-10-27
Anticipated expiration: 2020-07-24
Also published as: JP2002037532A

Description

【０００１】
【発明の属する技術分野】
本発明は、ケーブル巻きドラムに関し、詳しくは鍔部と巻胴とを連結する技術に関するものである。
【０００２】
【従来の技術】
従来から、胴部の端部に鍔部を取付けてケーブル巻きドラムを構成するものが知られている。胴部の端部に鍔部を取付けるに当たっては、鍔部、胴部とも大きくて重量があって取扱難いので、まず、鍔部を裏面側が上となるように横にし、この鍔部の上に胴部を配置して鍔部に設けた胴部差し込み溝に胴部を嵌め込むとともに鍔部に設けたボルト挿入孔部と胴部に設けたボルト挿通部とが上下に対向するように位置合わせし、その後、別の鍔部を横にして胴部の上に載置して上記と同様にして鍔部に設けた胴部差し込み溝を胴部に嵌め込むとともに鍔部に設けたボルト挿入孔部と胴部に設けたボルト挿通部とが上下に対向するように位置合わせし、その後、上に位置する鍔部のボルト挿入孔部から胴部のボルト挿通部を経て下に位置する鍔部のボルト挿入孔部にボルトを通し、ボルトの先端部にナットを締め付けることで胴部の両端部に鍔部を取付けるようにしている。
【０００３】
ところが、上記のように、鍔部４を横にし、その上に胴部２を載せて位置合わせし、更に、胴部２の上に別の鍔部４を横にして載せて位置合わせする際、従来にあっては、図１９に示すように、胴部２の端部を差し込む差し込み溝部３０の内周部に放射状リブ３１を形成してあって、図２０に示すような内周部に軸方向に胴補強リブ１０を形成した胴部２の端部を差し込み溝部３０に嵌め込んだ際に放射状リブ３１間に胴部２の胴補強リブ１０が位置するようになっていて胴部２が鍔部４に対して嵌め込み状態では回動できず、したがってはじめから鍔部４に設けた胴部差し込み溝３０を胴部２に嵌め込むとともに鍔部４に設けたボルト挿入孔部５と胴部２に設けたボルト挿通部１とが上下に対向するように嵌め込まなければならず嵌め込み作業が非常に面倒となるという問題がある。
【０００４】
ここで、特に、鍔部４を横にした上に胴部２を載せて位置合わせする場合には位置合わせする部分のレベルが低すぎて作業者が位置合わせ部分を目で確認できず、大きくて重量のある胴部２を手で支持しながら位置合わせする作業がきわめて面倒な作業となるという問題がある。
【０００５】
また、上記胴部と鍔部とは搬送、保管に当たっては、結合せずに別々に積み重ねて搬送したり、保管したりし、現場で胴部と鍔部とを上記のように位置合わせして結合することでケーブル巻きドラムを構成するのであるが、搬送、保管の際に胴部同士を積み重ねた場合大きくて重量のある胴部が滑りやすくて危険なため、多段に段積みし難いという問題があった。
【０００６】
【発明が解決しようとする課題】
本発明は上記の点に鑑みてなされたものであり、胴部と鍔部とを結合するにあっての位置合わせが簡単且つ確実にでき、また、大きくて重量のある胴部を上下に安定して段積みすることができるケーブル巻きドラムを提供することを課題とするものである。
【０００７】
【課題を解決するための手段】
上記課題を解決するために本発明に係るケーブル巻きドラムは、筒状をした胴部２の両端部に鍔部４を取付けたケーブル巻きドラムＡにおいて、軸心と平行な方向にボルト挿通部１を有する筒状をした胴部２の両端部に位置決め用突部３を突設し、鍔部４にボルト挿入孔部５を設け、鍔部４の裏面部に位置決め用突部３を溝底に当接して筒状の胴部２の端部を浮かせた状態で胴部２を回動することが可能な鍔部４の真ん中を中心とした仮想円に沿った嵌め込み溝部６を設け、嵌め込み溝部６の一部に嵌め込み溝部６よりも深さが深い第２の溝部７を設け、嵌め込み溝部６に胴部２の端部をはめ込むと共に位置決め用突部３を第２の溝部７にはめ込んだ状態でボルト挿通部１とボルト挿入孔部５とを連通させ、両鍔部４のボルト挿入孔部５と胴部２のボルト挿通部１とを挿通したボルト８により両鍔部４と胴部２とを結合して成ることを特徴とするものである。このような構成とすることで、胴部２の端部に設けた位置決め用突部３を鍔部４の裏面に設けた嵌め込み溝部６に差し込んで位置決め用突部３を溝底に当接して胴部２の端部を浮かせた状態で、胴部２又は鍔部４を回動して、位置決め用突部３を嵌め込み溝部６に沿ってスライドさせて位置決め用突部３を嵌め込み溝部６の一部に形成した第２の溝部７に落とし込むことで、突部３を第２の溝部７に嵌め込むと共に胴部２の端部をはめ込み溝部６に嵌め込んで位置決めしてボルト挿通部１とボルト挿入孔部５とを連通させることができるものであり、これにより、胴部２と鍔部４とを簡単に位置決めしてボルト８により結合できることになる。また、上記胴部２の両端部の位置決め用突部３のうち胴部２の一端部の位置決め用突部３を、胴部２の一端部の端面より径方向の内側にずれた位置から胴部２の軸方向の外側に向けて突出する軸方向外方突出部３ａにより構成し、軸方向外方突出部３ａより軸方向の内側の胴部２内周にリブ部９を形成し、胴部２の他端部の位置決め用突部３を、胴部２の他端部の端面より径方向の内側に突出した径方向内方突出部３ｂにより構成し、径方向内方突出部３ｂより軸方向の内側の胴部２内周にリブ部９を形成したので、上記のように、位置決め用突部３を嵌め込み溝部６に嵌め込んだ状態で胴部２又は鍔部４を回動して位置決め用突部３を第２の溝部７に嵌め込んで位置決めするように構成したものでありながら、組み立て前に胴部２同士を複数段積みする際、ケーブル巻きドラムＡを分解した状態で、一方の胴部２の軸方向外方突出部３ａを他方の筒状の胴部２の内周部の位置決め用突部３（径方向内方突出部３ｂ又は軸方向外方突出部３ａ）が突出してない部分に嵌め込んで段積みでき、この結果、軸方向外方突出により胴部２同士が横にずれないように段積みすることが可能となる。
【０００８】
また、胴部２に設けた位置決め用突部３部分にボルト挿通部１が位置し、第２の溝部７の溝底にボルト挿入孔部５の端部が開口し、第２の溝部７に位置決め用突部３が嵌り込んだ状態でボルト挿通部１とボルト挿入孔部５とが連通することが好ましい。このような構成とすることで、胴部２と鍔部４とを位置決めしてボルト挿通部１とボルト挿入孔部５とを連通させる構成が簡単な構造でできるものである。
【０００９】
また、鍔部４の表面側の嵌め込み溝部６に対応する部位に表側凹所１７を設けているので、ケーブル巻きドラムＡ同士を積み重ねる場合、一方のケーブル巻きドラムＡのボルト８の先端部のナット２１を締結した部分やボルト８の頭部が他方のケーブル巻きドラムＡの鍔部４の表側凹所１７に嵌り込むことで積み重ねたケーブル巻きドラムＡのずれを防止することができるものである。
【００１０】
【発明の実施の形態】
以下、本発明を添付図面に示す実施形態に基づいて説明する。
【００１１】
ケーブル巻きドラムＡは図１に示すように、略筒状をした胴部２の両端部に鍔部４を取付けて構成してある。胴部２、鍔部４はポリプロピレンのような合成樹脂により形成してあり、それぞれ射出成形などにより成形され、各成形品を組み立ててボルト８により固定してある。
【００１２】
胴部２は図４乃至図６に示すように、筒状をしていて内周部の周方向の複数箇所に胴部２の軸方向と平行な方向のボルト挿通部１が形成してある。添付図面に示す実施形態においては一対のリブ部９を胴部２の内周部の周方向の複数箇所に胴部２の軸方向と平行な方向に形成してあり、一対のリブ部９間がボルト挿通部１となっている。また、胴部２の内周部の周方向の複数箇所に設けた対となったリブ部９間にはそれぞれ複数の胴補強リブ１０が一体に設けてあり、この胴補強リブ１０の端部は筒状をした胴部２の端部よりも少し内側に引き込んだ位置となっている。この胴補強リブ１０はリブ部９と平行となっている。
【００１３】
筒状の胴部２の両端部には位置決め用突部３が突設してあり、胴部２の一端部側に設けた位置決め用突部３が、胴部２の一端部の胴部２の端面よりも内方にずれた位置から胴部２の軸方向の外側に向けて突出する軸方向外方突出部３ａにより構成してあり、胴部２の他端部に設けた位置決め用突部３が、胴部２の端面より内側に突出した径方向内方突出部３ｂにより構成してあり、この径方向内方突出部３ｂは軸方向においては胴部２の端面よりも突出しないように構成してある。
【００１４】
図４乃至図６に示す実施形態においては、筒状の胴部２の内面に突出した上記リブ部９を胴部２の一端部から胴部２の軸方向の外側に向けて突出させて軸方向外方突出部３ａを設けて、この軸方向外方突出部３ａを胴部２の一端部側における位置決め用突部３としてある。そして、この軸方向外方突出部３ａは胴部２の端面よりも内方にずれた位置から胴部２の軸方向の外側に向けて突出している。また、筒状の胴部２の他端部側においては筒状の胴部２の内面に突出した上記リブ部９が径方向内方突出部３ｂとなっていてこれが筒部２の他端部側の位置決め用突部３となっている。この径方向内方突出部３ｂが軸方向においては胴部２の端面よりも突出しないように構成してあり、実施形態では径方向内方突出部３ｂと胴部２の端面とが面一となっている。
【００１５】
鍔部４は図２、図３に示すようなものであり、この鍔部４には図３に示すように、表面部に多数の鍔補強用リブ１１が突設してあり、鍔部４にかかる荷重が鍔補強用リブ１１により吸収されることで鍔部４の割れを防止するようになっている。また、図２に示すように、鍔部４の裏面部の鍔部４の半径方向の略中間部分には、鍔部４の真ん中を中心とする仮想円に沿って嵌め込み溝部６が設けてあり、嵌め込み溝部６の一部に嵌め込み溝部６に連通する第２の溝部７が連通形成してある。添付図面に示す実施形態においては第２の溝部７は鍔部４の真ん中を中心として９０°の開き角度で４個設けてある。
【００１６】
図１３に示すように、第２の溝部７は嵌め込み溝部６よりも溝深さが深くなっている。第２の溝部７部分にはボルト挿入孔部５が形成してあり、第２の溝部７の溝底にボルト挿入孔部５の端部が位置している。嵌め込み溝部６の溝底部６ａは軸方向外方突出部３ａ又は径方向内方突出部３ｂが当接してスライドできるスライド溝底部６ｂと、該スライド溝底部６ｂより一段低くてスライド溝底部６ｂに軸方向外方突出部３ａ又は径方向内方突出部３ｂが当接した状態では胴部２の端部が浮き上がって嵌り込まず且つ軸方向外方突出部３ａ又は径方向内方突出部３ｂが第２の溝部７に嵌り込んだ状態では胴部２の端部が嵌り込む胴部嵌め込み溝底部６ｃとで構成してある。
【００１７】
添付図面に示す実施形態においては、図１３（ｂ）に示すように、嵌め込み溝部６の径方向の両壁部１５のうち径方向の外側に位置する外側壁部１５ａに沿って溝底部６ａが一段低くなっていて胴部嵌め込み溝底部６ｃとなっており、溝底部６ａのうち胴部嵌め込み溝底部６ｃよりも径方向の内側の部分がスライド溝底部６ｂとなっている。ここで、胴部嵌め込み溝底部６ｃの幅は筒状をした胴部２の端部の肉厚とほぼ等しくなっている。また、スライド溝底部６ｂの溝幅は位置決め用突部３の径方向の長さ（つまり鍔補強用リブ１１の胴部２の内面からの径方向への突出長さ）とほぼ等しくなっている。
【００１８】
鍔部４の嵌め込み溝部６の径方向の両壁部１５のうちの鍔部４の内側（鍔部４の中心側）の壁部１５ｂはその先端が鍔部４の内面よりも少し突出していてずれ防止突片部１６となっている。また、鍔部４の表面側の嵌め込み溝部６に対応する部分には表側凹所１７が設けてあり、嵌め込み溝部６の溝底部６ａが鍔部４の表裏方向（厚み方向）の略中間部分に位置していて嵌め込み溝部６と表側凹所１７を表裏に仕切っている。表側凹所１７の径方向の両壁部１８のうち径方向の内側（鍔部４の中心側）に位置する壁部１８ａは上記ずれ防止突片部１６の肉厚分だけ径方向の内側（鍔部４の中心側）にずれて位置している。つまり、鍔部４同士を積み重ねた際に、図１８に示すように一方の鍔部４の裏面に他方の鍔部４の表面を重ねた場合、ずれ防止用突片部１６が表側凹所１７の壁部１８ａの内面に沿って表側凹所１７内に嵌め込まれて積み重ねた鍔部４同士がずれないようになっている。
【００１９】
なお、鍔部４には電線取り出し孔１９が設けてある。
【００２０】
しかして、ケーブル巻きドラムＡを組み立て形成するに当たっては、一方の鍔部４を裏面側が上となるように横にして組み立て用の支持枠や支持台などの上に載せ、この横にした一方の鍔部４の上に胴部２を軸方向が垂直となるように配置して胴部２の端部に突設した位置決め用突部３を嵌め込み溝部６に嵌め込む。この場合，胴部２の両端部の位置決め用突部３を構成する軸方向外方突出部３ａ又は径方向内方突出部３ｂのどちらが下となるようにして胴部２を配置してもよいが、好ましくは軸方向外方突出部３ａを下になるようにして胴部２を配置するのがよく、この方が位置決め用突部３を嵌め込み溝部６に嵌め込むんで位置合わせする場合における胴部２の落ち込み量が大きくて目で確認しにくい位置で行う位置決め用突部３を嵌め込み溝部６に嵌め込む作業がより容易に行える。
【００２１】
上記のようにして軸方向外方突出部３ａ又は径方向内方突出部３ｂを嵌め込み溝部６に嵌め込むと、図８又は図１１に示すように、軸方向外方突出部３ａ又は径方向内方突出部３ｂが嵌め込み溝部６の溝底部６ａのうちスライド溝底部６ｂに当接し、筒状の胴部２の端面は溝底部６ａが一段低くなった胴部嵌め込み溝底部６ｃから浮いた状態となっている。この状態で胴部２を回動して位置決め用突部３を嵌め込み溝部６内で周方向にスライドさせると、位置決め用突部３が嵌め込み溝部６の端部に至って第２の溝部７に落ち込んで嵌り込むと共に図１０又は図１２のように筒状の胴部２の端部が一段下がった嵌め込み溝底部６ｃ及び第２の溝部７に落ち込んで嵌り込み、また、この状態でボルト挿通部１とボルト挿入孔部５とが連通するものである。
【００２２】
このように一方の鍔部４の上に該鍔部４に対して胴部２を嵌め込んで位置決めし、その後、胴部２の反対側の端部の上に別の鍔部４を載置し、この場合、胴部２の他端部に突設した他方の位置決め用突部３（径方向内方突出部３ｂ又は軸方向外方突出部３ａ）に別の鍔部４の裏面の嵌め込み溝部６を嵌め込む。この場合、図１１又は図８に示すように径方向内方突出部３ｂ又は軸方向外方突出部３ａが嵌め込み溝部６の溝底部６ａのうちスライド溝底部６ｂに当接し、筒状の胴部２の端面は溝底部６ａが胴部嵌め込み溝底部６ｃから浮いた状態となっている。この状態で上に配置した別の鍔部４を回動して位置決め用突部３に対して嵌め込み溝部６をスライドさせると、嵌め込み溝部６の端部が位置決め用突部３位置に至って位置決め用突部３に第２の溝部７が嵌り込むと共に図１２又は図１０に示すように筒状の胴部２の端部が嵌め込み溝底部６ｃ及び第２の溝部７に落ち込んで嵌り込み、また、この状態でボルト挿通部１と別の鍔部４のボルト挿入孔部５とが連通するものである。このように胴部２の他端部に別の鍔部４を嵌め込んで位置決めする。
【００２３】
上記のように胴部２の両端部に鍔部４を嵌め込んで位置決めし、この状態で、上の鍔部４のボルト挿入孔部５からボルト８を挿入し、胴部２に設けたボルト挿通部１を通過させて下の鍔部４のボルト挿入孔部５に挿通し、ボルト８の先端部にナット２１を締結して胴部２の両端部に鍔部４を取付けてケーブル巻きドラムＡを組み立て形成するものである。
【００２４】
このように組み立て形成したケーブル巻きドラムＡには電力線あるいは情報線等の各種ケーブルを巻装するものである。
【００２５】
ところで、ケーブル巻きドラムＡの両側の鍔部４からボルト８の頭部及びボルト８の先端部のナット２１を締結した部分が外方に突出するが、上記ケーブル巻きドラムＡ同士を積み重ねる場合、図１４、図１５に示すように一方のケーブル巻きドラムＡのボルト８の先端部のナット２１を締結した部分が他方のケーブル巻きドラムＡの鍔部４の表側凹所１７に嵌り込み、また、他方のケーブル巻きドラムＡのボルト８の頭部が一方のケーブル巻きドラムＡの鍔部４の表側凹所１７に嵌り込むので、上下に隙間なくケーブル巻きドラムＡ同士を積み重ねることができるとともに、表側凹所１７にボルト８の頭部や先端部のナット２１締結部分が嵌り込むことで積み重ねたケーブル巻きドラムＡのずれを防止することができるものである。
【００２６】
一方、上記のようにケーブル巻きドラムＡを組み立て形成するまでは胴部２、鍔部４を別々にしてそれぞれ上下に積み重ねて搬送したり、保管したりすることでコンパクトに搬送したり保管したりするものであるが、本発明における胴部２同士を積み重ねる場合、筒状の胴部２の軸方向の端部上に別の筒状の胴部２の軸方向の端部を載置するようにして重ねるのであるが、図１６に示すように一方の胴部２の軸方向外方突出部３ａが他方の筒状の胴部２の内周部の位置決め用突部３（径方向内方突出部３ｂ又は軸方向外方突出部３ａ）が突出してない部分（実施形態においては位置決め用突部３及び胴補強リブ１０が突出してない部分）に嵌め込んで段積みできて、胴部２同士が横にずれないように段積みができるものである。この場合、図１７に示すように軸方向外方突出部３ａを構成する一対のリブ部９間に他の胴部２の胴補強リブ１０が嵌りこむようにすると、周方向のずれも防止できるものである。
【００２７】
また、鍔部４同士を積み重ねた場合、すでに述べたが、図１８に示すように、一方の鍔部４の裏面に他方の鍔部４の表面を重ねた場合、ずれ防止用突片部１６が表側凹所１７の壁部１８ａの内面に沿って表側凹所１７内に嵌め込まれて積み重ねた鍔部４同士がずれないようになっている。
【００２８】
【発明の効果】
上記のように本発明の請求項１記載の発明にあっては、軸心と平行な方向にボルト挿通部を有する筒状をした胴部の両端部に位置決め用突部を突設し、鍔部にボルト挿入孔部を設け、鍔部の裏面部に位置決め用突部を溝底に当接して筒状の胴部の端部を浮かせた状態で胴部を回動することが可能な鍔部の真ん中を中心とした仮想円に沿った嵌め込み溝部を設け、嵌め込み溝部の一部に嵌め込み溝部よりも深さが深い第２の溝部を設け、嵌め込み溝部に胴部の端部をはめ込むと共に位置決め用突部を第２の溝部にはめ込んだ状態でボルト挿通部とボルト挿入孔部とを連通させ、両鍔部のボルト挿入孔部と胴部のボルト挿通部とを挿通したボルトにより両鍔部と胴部とを結合してあるので、胴部の端部に設けた位置決め用突部を鍔部の裏面に設けた嵌め込み溝部に差し込んで位置決め用突部を溝底に当接して胴部の端部を浮かせた状態で、胴部又は鍔部を回動して、位置決め用突部を嵌め込み溝部に沿ってスライドさせて位置決め用突部を嵌め込み溝部の一部に形成した第２の溝部に落とし込むだけで、簡単に突部を第２の溝部に嵌め込むと共に胴部の端部をはめ込み溝部に嵌め込んで位置決めしてボルト挿通部とボルト挿入孔部とを連通させることができて、大きくて重量が重い鍔部と胴部との正確な位置決め組み立てが簡単に行えるものであって、組み立てがきわめて容易になるものである。また、胴部の両端部の位置決め用突部のうち胴部の一端部の位置決め用突部を、胴部の一端部の端面より径方向の内側にずれた位置から胴部の軸方向の外側に向けて突出する軸方向外方突出部により構成し、軸方向外方突出部より軸方向の内側の胴部内周にリブ部を形成し、胴部の他端部の位置決め用突部を、胴部の他端部の端面より径方向の内側に突出した径方向内方突出部により構成し、径方向内方突出部より軸方向の内側の胴部内周にリブ部を形成したので、上記のように、位置決め用突部を嵌め込み溝部に嵌め込んだ状態で胴部又は鍔部を回動して位置決め用突部を第２の溝部に嵌め込んで位置決めするように構成したものでありながら、組み立て前に胴部同士を複数段積みする際、ケーブル巻きドラムを分解した状態で、一方の胴部の軸方向外方突出部を他方の筒状の胴部の内周部の位置決め用突部（径方向内方突出部又は軸方向外方突出部）が突出してない部分に嵌め込んで段積みできて、この結果、軸方向外方突出により胴部同士が横にずれないように安定した段積みが可能となる。
【００２９】
また、請求項２記載の発明にあっては、上記請求項１記載の発明の効果に加えて、胴部に設けた位置決め用突部部分にボルト挿通部が位置し、第２の溝部の溝底にボルト挿入孔部の端部が開口し、第２の溝部に位置決め用突部が嵌り込んだ状態でボルト挿通部とボルト挿入孔部とが連通するので、胴部と鍔部とを位置決めしてボルト挿通部とボルト挿入孔部とを連通させる構成が簡単な構造でできて、胴部や鍔部の構成を簡略化できて金型コストを低下できるものである。
【００３０】
また、請求項３記載の発明にあっては、上記請求項１又は請求項２記載の発明の効果に加えて、鍔部の表面側の嵌め込み溝部に対応する部位に表側凹所を設けているので、ケーブル巻きドラム同士を積み重ねる場合、一方のケーブル巻きドラムのボルトの先端部のナットを締結した部分やボルトの頭部が他方のケーブル巻きドラムの鍔部の表側凹所に嵌り込むことで積み重ねたケーブル巻きドラムのずれを防止することができるものである。
【図面の簡単な説明】
【図１】本発明のケーブル巻きドラムを示す全体斜視図である。
【図２】同上に用いる鍔部の背面図である。
【図３】同上の鍔部の正面図である。
【図４】同上に用いる胴部の正面図である。
【図５】同上の胴部の一部破断した側面図である。
【図６】同上の胴部の斜視図である。
【図７】同上の鍔部に胴部の一端部を嵌合している途中の状態の断面図である。
【図８】（ａ）は同上の鍔部に胴部の一端部を嵌合している途中において胴部の一端部が浮いている状態を示す断面図であり、（ｂ）は同上の鍔部に胴部の一端部を嵌合している途中において軸方向外方突出部が嵌め込み溝部の溝底部のスライド溝底部に当接している状態の断面図である。
【図９】同上の鍔部に胴部の一端部を位置決めして嵌合完了となった状態の断面図である。
【図１０】（ａ）は同上の鍔部に胴部の一端部を位置決めした嵌合完了した状態において胴部の一端部が胴部嵌め込み溝底部に嵌り込んでいる状態を示す断面図であり、（ｂ）は同上のボルト挿通部とボルト挿入孔部とが連通している状態の断面図である。
【図１１】（ａ）は同上の鍔部に胴部の他端部を嵌合している途中において胴部の他端部が浮いている状態を示す断面図であり、（ｂ）は鍔部に胴部の他端部を嵌合している途中におけるボルト挿入孔部部分の断面図である。
【図１２】（ａ）は同上の鍔部に胴部の他端部を位置決めした嵌合完了した状態において胴部の他端部が胴部嵌め込み溝底部に嵌り込んでいる状態を示す断面図であり、（ｂ）は同上のボルト挿通部とボルト挿入孔部とが連通している状態の断面図である。
【図１３】（ａ）は同上の鍔部の第２の溝部の断面図であり、（ｂ）は嵌め込み溝部の断面図である。
【図１４】同上のケーブル巻きドラムを上下に積み重ねた状態の一部破断した側面図である。
【図１５】同上のケーブル巻きドラムを上下に積み重ねた状態の他の部分で破断した側面図である。
【図１６】同上の胴部を上下に積み重ねた状態の一部破断した側面図である。
【図１７】同上の胴部を上下に積み重ねた状態における軸方向外方突出部の位置を示す説明図である。
【図１８】（ａ）は鍔部同士を積み重ねる前の一部破断した分解側面図であり、（ｂ）は鍔部同士を積み重ねた状態の一部破断した側面図である。
【図１９】従来例の鍔部の裏面図である。
【図２０】（ａ）は従来の胴部の正面図であり、（ｂ）は従来の胴部の一部破断した側面図である。
【符号の説明】
Ａケーブル巻きドラム
１ボルト挿通部
２胴部
３位置決め用突部
３ａ軸方向外方突出部
３ｂ径方向内方突出部
４鍔部
５ボルト挿入孔部
６嵌め込み溝部
６ａ溝底部
６ｂスライド溝底部
６ｃ胴部嵌め込み溝底部
７第２の溝部
８ボルト[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cable winding drum, and more particularly to a technique for connecting a collar part and a winding drum.
[0002]
[Prior art]
Conventionally, what constitutes a cable winding drum by attaching a collar to the end of the body is known. When attaching the buttock to the end of the torso, the buttock and the torso are both large and heavy and difficult to handle. Position the body part so that the body part is inserted into the body part insertion groove provided in the collar part, and the bolt insertion hole part provided in the collar part and the bolt insertion part provided in the body part are vertically aligned. Then, another bolt portion is placed on the trunk portion with the flange portion lying sideways, and a barrel insertion groove provided in the flange portion is fitted into the barrel portion in the same manner as described above, and a bolt insertion hole provided in the flange portion Align the upper part and the bolt insertion part provided on the body part so as to face each other vertically, and then lower the flange part from the bolt insertion hole part of the upper part of the collar part through the bolt insertion part of the trunk part Insert the bolts into the bolt insertion holes and tighten the nuts at the ends of the bolts. So that attaching the flange portion.
[0003]
However, as described above, when the collar part 4 is placed sideways, the body part 2 is placed thereon for alignment, and further, another collar part 4 is placed sideways on the body part 2 for alignment. In the prior art, as shown in FIG. 19, radial ribs 31 are formed on the inner peripheral portion of the insertion groove portion 30 into which the end portion of the trunk portion 2 is inserted, and the inner peripheral portion as shown in FIG. When the end portion of the body portion 2 in which the body reinforcing rib 10 is formed in the axial direction is fitted into the insertion groove portion 30, the body reinforcing rib 10 of the body portion 2 is positioned between the radial ribs 31. However, it cannot be rotated in the state where it is fitted to the collar part 4, so that the trunk insertion groove 30 provided in the collar part 4 from the beginning is fitted in the trunk part 2 and the bolt insertion hole part 5 provided in the collar part 4 and the trunk It must be fitted so that the bolt insertion part 1 provided in the part 2 faces vertically. Work there is a problem that is very troublesome.
[0004]
Here, in particular, in the case where the body part 2 is placed on the side with the flange part 4 lying on the side, the level of the part to be aligned is too low, and the operator cannot visually confirm the part to be aligned. In addition, there is a problem that the work of aligning while supporting the heavy and heavy body 2 by hand becomes a very troublesome work.
[0005]
Also, when transporting and storing the torso and the buttocks, they should be stacked and transported separately without being combined, and stored, and the torso and buttocks should be aligned as described above at the site. The cable winding drum is configured by connecting, but when stacking the body parts during transportation and storage, the large and heavy body parts are slippery and dangerous, so it is difficult to stack in multiple stages was there.
[0006]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, and can easily and reliably align the body part and the collar part, and can stabilize the large and heavy body part up and down. It is an object of the present invention to provide a cable winding drum that can be stacked.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problem, the cable winding drum according to the present invention includes a bolt insertion portion 1 in a direction parallel to the axis of the cable winding drum A in which the flange portions 4 are attached to both ends of the cylindrical body portion 2. Positioning projections 3 are provided at both ends of a cylindrical body portion 2 having bolts, bolt insertion holes 5 are provided in the flange 4, and the positioning protrusions 3 are provided on the back surface of the flange 4. A fitting groove portion 6 is provided along a virtual circle centering on the middle of the collar portion 4 capable of rotating the trunk portion 2 in a state where the end portion of the cylindrical barrel portion 2 is in contact with the cylindrical portion 2 and floated. A second groove portion 7 having a depth deeper than that of the fitting groove portion 6 is provided in a part of the groove portion 6. The end portion of the body portion 2 is fitted into the fitting groove portion 6, and the positioning projection 3 is fitted into the second groove portion 7. The bolt insertion part 1 and the bolt insertion hole part 5 are communicated with each other in the state, and the bolt insertion hole part 5 and the body of the both collar parts 4 The second bolt insertion portion 1 and the bolt 8 inserted through the is characterized in that formed by combining a Ryotsuba portion 4 and the body 2. With such a configuration, the positioning projection 3 provided at the end of the body 2 is inserted into the fitting groove 6 provided on the back surface of the flange 4, and the positioning projection 3 is brought into contact with the groove bottom. With the end portion of the body portion 2 floating, the body portion 2 or the flange portion 4 is rotated, and the positioning projection portion 3 is slid along the fitting groove portion 6 to insert the positioning projection portion 3 into the fitting groove portion 6. By dropping into the second groove portion 7 formed in a part, the protrusion 3 is fitted into the second groove portion 7 and the end portion of the trunk portion 2 is fitted into the fitting groove portion 6 to be positioned, and the bolt insertion portion 1 and The bolt insertion hole 5 can be communicated with each other, whereby the body 2 and the flange 4 can be easily positioned and coupled by the bolt 8. The positioning projection 3 at one end of the barrel 2 out of the positioning projections 3 at both ends of the barrel 2 is shifted from the position shifted inward in the radial direction from the end surface of the one end of the barrel 2. A rib portion 9 is formed on the inner periphery of the barrel portion 2 in the axial direction from the axially outward projection portion 3a. The rib portion 9 is formed by the axially outward projection portion 3a projecting outward in the axial direction of the portion 2. The positioning protrusion 3 at the other end of the portion 2 is constituted by a radially inward protruding portion 3b protruding inward in the radial direction from the end face of the other end of the body portion 2, and from the radially inward protruding portion 3b. Since the rib portion 9 is formed on the inner periphery of the body portion 2 on the inner side in the axial direction, the body portion 2 or the flange portion 4 is rotated with the positioning projection 3 fitted in the groove portion 6 as described above. The positioning projection 3 is fitted into the second groove 7 for positioning, and the body portions 2 are combined before assembly. When stacking, the cable winding drum A is disassembled, and the axially outward projecting portion 3a of one barrel portion 2 is replaced with the positioning projection 3 (radial direction of the inner peripheral portion of the other cylindrical barrel portion 2). The inner projecting portion 3b or the axially outward projecting portion 3a) can be stacked by being fitted in a portion that does not project, and as a result, the body portions 2 are stacked so as not to be displaced laterally by the axially outward projecting. It becomes possible.
[0008]
Further, the bolt insertion portion 1 is positioned at the positioning projection 3 provided on the body portion 2, the end of the bolt insertion hole portion 5 is opened at the groove bottom of the second groove portion 7, and the second groove portion 7 is It is preferable that the bolt insertion portion 1 and the bolt insertion hole portion 5 communicate with each other in a state in which the positioning projection 3 is fitted. With such a configuration, the configuration in which the body portion 2 and the flange portion 4 are positioned and the bolt insertion portion 1 and the bolt insertion hole portion 5 communicate with each other can be made with a simple structure.
[0009]
Moreover, since the front side recess 17 is provided in the site | part corresponding to the fitting groove part 6 of the surface side of the collar part 4, when stacking the cable winding drums A mutually, the nut of the front-end | tip part of the volt | bolt 8 of one cable winding drum A is carried out. 21 and the head of the bolt 8 are fitted into the front side recess 17 of the flange 4 of the other cable winding drum A, so that the stacked cable winding drum A can be prevented from shifting.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.
[0011]
As shown in FIG. 1, the cable winding drum A is configured by attaching flange portions 4 to both end portions of a substantially cylindrical body portion 2. The body portion 2 and the flange portion 4 are formed of a synthetic resin such as polypropylene, each is formed by injection molding or the like, and each molded product is assembled and fixed with bolts 8.
[0012]
As shown in FIGS. 4 to 6, the body portion 2 has a cylindrical shape, and bolt insertion portions 1 in a direction parallel to the axial direction of the body portion 2 are formed at a plurality of locations in the circumferential direction of the inner peripheral portion. . In the embodiment shown in the accompanying drawings, a pair of rib portions 9 are formed at a plurality of locations in the circumferential direction of the inner peripheral portion of the body portion 2 in a direction parallel to the axial direction of the body portion 2, and between the pair of rib portions 9. Is the bolt insertion part 1. In addition, a plurality of trunk reinforcing ribs 10 are integrally provided between the pair of rib sections 9 provided at a plurality of locations in the circumferential direction of the inner peripheral portion of the trunk section 2. Is a position that is drawn inward slightly from the end of the cylindrical body 2. The trunk reinforcing rib 10 is parallel to the rib portion 9.
[0013]
Positioning protrusions 3 are provided at both ends of the cylindrical body 2, and the positioning protrusions 3 provided on one end side of the body 2 are the body 2 at one end of the body 2. A positioning protrusion provided at the other end of the body 2 is formed by an axially outward protruding portion 3a that protrudes toward the outside in the axial direction of the body 2 from a position displaced inward from the end surface of the body 2. The portion 3 is configured by a radially inward protruding portion 3b protruding inward from the end surface of the body portion 2, and the radially inward protruding portion 3b does not protrude from the end surface of the body portion 2 in the axial direction. It is configured.
[0014]
In the embodiment shown in FIGS. 4 to 6, the rib portion 9 protruding from the inner surface of the cylindrical body portion 2 protrudes from the one end portion of the body portion 2 toward the outer side in the axial direction of the body portion 2. A direction outward protrusion 3 a is provided, and this axial outward protrusion 3 a is used as a positioning protrusion 3 on one end side of the body 2. The axially outward protruding portion 3 a protrudes outward in the axial direction of the body portion 2 from a position shifted inward from the end surface of the body portion 2. Further, on the other end side of the cylindrical body portion 2, the rib portion 9 protruding from the inner surface of the cylindrical body portion 2 is a radially inward protruding portion 3 b, which is the other end portion of the cylindrical portion 2. This is a positioning protrusion 3 on the side. The radially inward protruding portion 3b is configured not to protrude from the end surface of the body portion 2 in the axial direction. In the embodiment, the radially inward protruding portion 3b and the end surface of the body portion 2 are flush with each other. It has become.
[0015]
The flange 4 is as shown in FIGS. 2 and 3, and as shown in FIG. 3, the flange 4 has a large number of flange reinforcing ribs 11 protruding from the surface thereof. The load applied to is absorbed by the rib reinforcing rib 11 so that the crack of the flange portion 4 is prevented. Further, as shown in FIG. 2, a fitting groove portion 6 is provided in a substantially intermediate portion in the radial direction of the flange portion 4 on the back surface portion of the flange portion 4 along a virtual circle centering on the middle of the flange portion 4. The second groove portion 7 communicating with the fitting groove portion 6 is formed in communication with a part of the fitting groove portion 6. In the embodiment shown in the accompanying drawings, four second groove portions 7 are provided at an opening angle of 90 ° with the center of the collar portion 4 as the center.
[0016]
As shown in FIG. 13, the groove depth of the second groove portion 7 is deeper than that of the fitting groove portion 6. A bolt insertion hole portion 5 is formed in the second groove portion 7, and the end portion of the bolt insertion hole portion 5 is located at the groove bottom of the second groove portion 7. The groove bottom portion 6a of the fitting groove portion 6 has a slide groove bottom portion 6b in which the axially outward projecting portion 3a or the radially inward projecting portion 3b abuts and can slide, and is one step lower than the slide groove bottom portion 6b and is pivoted to the slide groove bottom portion 6b. In the state where the directional outward protrusion 3a or the radial inward protrusion 3b is in contact, the end of the body 2 is not lifted and fitted, and the axial outward protrusion 3a or the radial inward protrusion 3b is the first. In the state of being fitted in the groove portion 7 of the second portion, it is constituted by a trunk portion fitting groove bottom portion 6c into which an end portion of the trunk portion 2 is fitted.
[0017]
In the embodiment shown in the accompanying drawings, as shown in FIG. 13 (b), the groove bottom portion 6a is formed along the outer wall portion 15a located on the outer side in the radial direction among the both radial wall portions 15 of the fitting groove portion 6. The groove portion 6c is lower than the trunk portion, and the bottom portion 6c of the groove portion is the bottom portion 6c. The inner portion of the groove bottom portion 6a in the radial direction of the bottom portion 6c of the groove portion is the slide groove bottom portion 6b. Here, the width | variety of the trunk | drum fitting groove bottom part 6c is substantially equal to the thickness of the edge part of the cylindrical trunk | drum 2. As shown in FIG. Further, the groove width of the slide groove bottom portion 6b is substantially equal to the length in the radial direction of the positioning projection 3 (that is, the projection length in the radial direction from the inner surface of the body portion 2 of the flange reinforcing rib 11). .
[0018]
Of the two wall portions 15 in the radial direction of the fitting groove portion 6 of the flange portion 4, the end of the wall portion 15 b inside the flange portion 4 (center side of the flange portion 4) protrudes slightly from the inner surface of the flange portion 4. This is a shift prevention protrusion 16. Moreover, the front side recess 17 is provided in the part corresponding to the fitting groove part 6 on the surface side of the collar part 4, and the groove bottom part 6 a of the fitting groove part 6 is in a substantially middle part in the front and back direction (thickness direction) of the collar part 4. It is located and the fitting groove part 6 and the front side recessed part 17 are divided into the front and back. Of the two wall portions 18 in the radial direction of the front-side recess 17, the wall portion 18 a located on the inner side in the radial direction (center side of the flange portion 4) is the inner side in the radial direction by the thickness of the displacement preventing protrusion piece portion 16 ( It is located shifted to the center side of the collar part 4). In other words, when the collars 4 are stacked, as shown in FIG. 18, when the surface of the other collar part 4 is superimposed on the back surface of the one collar part 4, the protrusions 16 for preventing slippage are formed on the front side recess 17. The flanges 4 fitted and stacked in the front recess 17 along the inner surface of the wall portion 18a are prevented from shifting.
[0019]
Note that a wire outlet hole 19 is provided in the collar portion 4.
[0020]
Thus, when assembling and forming the cable winding drum A, one flange portion 4 is placed sideways with the back side facing up, and placed on a support frame or support stand for assembly, and the one of the side portions that have been placed sideways is placed. The positioning projection 3, which protrudes from the end of the trunk 2, is fitted into the fitting groove 6 by arranging the trunk 2 on the flange 4 so that the axial direction is vertical. In this case, the body part 2 may be arranged so that either the axially outward projecting part 3a or the radially inward projecting part 3b constituting the positioning projecting part 3 at both ends of the body part 2 is downward. However, it is preferable to dispose the body 2 with the axially outward projecting portion 3a facing downward, and the body portion in the case where the positioning projection 3 is fitted into the fitting groove 6 for alignment. The operation of fitting the positioning projection 3 into the fitting groove 6 at a position where the amount of depression 2 is large and is difficult to visually confirm can be performed more easily.
[0021]
When the axially outward projecting portion 3a or the radially inwardly projecting portion 3b is fitted into the fitting groove portion 6 as described above, as shown in FIG. 8 or FIG. The side protruding portion 3b contacts the slide groove bottom portion 6b of the groove bottom portion 6a of the fitting groove portion 6, and the end surface of the cylindrical barrel portion 2 is lifted from the trunk fitting groove bottom portion 6c in which the groove bottom portion 6a is lowered by one step. It has become. When the body 2 is rotated in this state and the positioning projection 3 is slid in the circumferential direction in the fitting groove 6, the positioning projection 3 reaches the end of the fitting groove 6 and falls into the second groove 7. 10 and FIG. 12, the end of the cylindrical body 2 is lowered into the fitting groove bottom 6 c and the second groove 7, and the bolt insertion part 1 is fitted in this state. And the bolt insertion hole 5 communicate with each other.
[0022]
In this way, the body 2 is fitted and positioned with respect to the collar 4 on one collar 4, and then another collar 4 is placed on the opposite end of the trunk 2. In this case, the back of another flange 4 is fitted into the other positioning projection 3 (radially inward projecting portion 3b or axially outward projecting portion 3a) projecting from the other end of the body 2. The groove 6 is fitted. In this case, as shown in FIG. 11 or FIG. 8, the radially inward protruding portion 3b or the axially outward protruding portion 3a contacts the slide groove bottom portion 6b of the groove bottom portion 6a of the fitting groove portion 6 to form a cylindrical body portion. The end face of 2 is in a state in which the groove bottom portion 6a floats from the body portion fitting groove bottom portion 6c. In this state, when the other flange 4 arranged above is rotated and the fitting groove 6 is slid with respect to the positioning projection 3, the end of the fitting groove 6 reaches the position of the positioning projection 3 for positioning. As shown in FIG. 12 or FIG. 10, the end of the cylindrical body portion 2 is fitted into the groove bottom portion 6c and the second groove portion 7, and the second groove portion 7 is fitted into the projecting portion 3. In this state, the bolt insertion part 1 communicates with the bolt insertion hole part 5 of the other flange part 4. In this way, another collar portion 4 is fitted into the other end portion of the body portion 2 and positioned.
[0023]
As described above, the flanges 4 are fitted and positioned at both ends of the body part 2, and in this state, the bolts 8 are inserted from the bolt insertion holes 5 of the upper flange part 4, and the bolts provided on the body part 2. Passing through the insertion part 1 and passing through the bolt insertion hole part 5 of the lower collar part 4, a nut 21 is fastened to the tip part of the bolt 8, and the collar part 4 is attached to both ends of the body part 2, and the cable winding drum A is assembled and formed.
[0024]
Various cables such as power lines or information lines are wound around the cable winding drum A assembled and formed in this way.
[0025]
By the way, although the part which fastened the nut 21 of the head part of the volt | bolt 8 and the front-end | tip part of the volt | bolt 8 protrudes outward from the collar part 4 of the both sides of the cable winding drum A, when stacking the said cable winding drums A, FIG. 14, the portion where the nut 21 at the tip of the bolt 8 of one cable winding drum A is fastened to the front side recess 17 of the flange 4 of the other cable winding drum A as shown in FIG. Since the head portion of the bolt 8 of the cable winding drum A fits into the front recess 17 of the flange 4 of one cable winding drum A, the cable winding drums A can be stacked with no gaps between the upper and lower sides, and the front recess Since the nut 21 fastening portion at the head or the tip of the bolt 8 is fitted into the place 17, the stacked cable winding drum A can be prevented from being displaced.
[0026]
On the other hand, until the cable winding drum A is assembled and formed as described above, the body part 2 and the collar part 4 are separately stacked and transported and stored in a compact manner. However, when stacking the body parts 2 in the present invention, the end part in the axial direction of another cylindrical body part 2 is placed on the end part in the axial direction of the cylindrical body part 2. As shown in FIG. 16, the axially outward projecting portion 3a of one barrel portion 2 is positioned on the inner peripheral portion of the other cylindrical barrel portion 2 (radially inward). The projecting portion 3b or the axially outward projecting portion 3a) is fitted into a portion where the projecting portion 3b or the axially projecting projecting portion 3a does not project (in the embodiment, the portion where the positioning projecting portion 3 and the trunk reinforcing rib 10 do not project) and can be stacked. They can be stacked so that they do not slip sideways. In this case, as shown in FIG. 17, if the body reinforcing ribs 10 of the other body part 2 are fitted between the pair of rib parts 9 constituting the axially outward projecting part 3a, the circumferential displacement can be prevented. It is.
[0027]
In addition, as described above, when the collars 4 are stacked, as shown in FIG. 18, when the surface of the other collar 4 is superimposed on the back surface of one collar 4, the slip-preventing projecting piece 16. However, the flanges 4 that are fitted and stacked in the front side recess 17 along the inner surface of the wall portion 18a of the front side recess 17 do not deviate from each other.
[0028]
【The invention's effect】
As described above, in the first aspect of the present invention, the positioning protrusions are provided at both ends of the cylindrical body having the bolt insertion portions in the direction parallel to the axial center, A bolt insertion hole is provided at the bottom, and the barrel can be rotated with the positioning projection abutting against the groove bottom on the back of the collar and the end of the cylindrical barrel floating. A fitting groove portion is provided along a virtual circle centered on the center of the portion, a second groove portion having a depth deeper than the fitting groove portion is provided in a part of the fitting groove portion, and the end portion of the trunk portion is fitted and positioned in the fitting groove portion. The bolt insertion part and the bolt insertion hole part are communicated with the projecting part fitted in the second groove part, and both the flange parts are formed by the bolts inserted through the bolt insertion hole part of the both collar parts and the bolt insertion part of the trunk part. Since the body and the body are combined, a positioning projection provided at the end of the body is provided on the back of the collar The positioning projection is inserted into the fitting groove in a state of floating the end of the barrel abuts the groove bottom, by rotating the barrel or flange portion is slid along the groove fitting the positioning projection By simply dropping the positioning protrusion into the second groove formed in a part of the fitting groove, the protrusion is easily fitted into the second groove and the end of the body is fitted into the fitting groove for positioning. The bolt insertion part and the bolt insertion hole part can communicate with each other, and it is easy to accurately position and assemble the large and heavy flange part and body part, making assembly extremely easy It is. In addition, the positioning protrusions at one end of the body part out of the positioning protrusions at both ends of the body part are positioned on the outer side in the axial direction of the body part from the position shifted inward in the radial direction from the end surface of the one end part of the body part. A rib portion is formed on the inner periphery of the body portion on the inner side in the axial direction from the axially outward projecting portion, and a positioning protrusion on the other end portion of the body portion. Since it is configured by a radially inward protruding portion that protrudes inward in the radial direction from the end surface of the other end portion of the body portion, a rib portion is formed on the inner periphery of the body portion in the axial direction from the radially inward protruding portion. As described above, the positioning projection is fitted into the second groove, and the positioning projection is fitted into the second groove by positioning the positioning projection in the fitting groove. When stacking multiple barrels before assembly, with the cable winding drum disassembled, The axially outward projecting portion of the other cylindrical body is fitted into a portion where the projecting part for positioning (the radially inwardly projecting portion or the axially outward projecting portion) of the inner peripheral portion of the other cylindrical body does not project. As a result, stable stacking is possible so that the body portions do not shift laterally due to the axial outward protrusion.
[0029]
According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, the bolt insertion portion is located at the positioning projection provided on the body portion, and the groove of the second groove portion The bolt insertion hole and the bolt insertion hole communicate with each other with the end of the bolt insertion hole open at the bottom and the positioning projection fitted into the second groove, so the barrel and the collar are positioned. Thus, the structure for communicating the bolt insertion part and the bolt insertion hole part can be made simple, the structure of the body part and the collar part can be simplified, and the die cost can be reduced.
[0030]
In addition, in the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2 , a front side recess is provided in a portion corresponding to the fitting groove on the surface side of the collar portion. Therefore, when stacking the cable winding drums, stack the part by tightening the nut at the tip of the bolt of one cable winding drum or the head of the bolt into the recess on the front side of the flange of the other cable winding drum. The cable winding drum can be prevented from shifting.
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing a cable winding drum of the present invention.
FIG. 2 is a rear view of a collar used for the above.
FIG. 3 is a front view of the heel portion of the above.
FIG. 4 is a front view of a trunk used for the above.
FIG. 5 is a partially cutaway side view of the same body part.
FIG. 6 is a perspective view of the same body part.
FIG. 7 is a cross-sectional view showing a state in the middle of fitting the one end of the body part to the flange part.
FIG. 8A is a cross-sectional view showing a state in which one end of the body portion is floating while the one end portion of the body portion is fitted to the flange portion of the above, and FIG. It is sectional drawing of the state in which the axial direction outward protrusion part is contacting the slide groove bottom part of the groove bottom part of a fitting groove part in the middle of fitting the one end part of a trunk | drum to a part.
FIG. 9 is a cross-sectional view showing a state where one end portion of the body portion is positioned on the flange portion of the same and the fitting is completed.
FIG. 10A is a cross-sectional view showing a state in which one end portion of the body portion is fitted in the bottom portion of the body portion fitting groove in a state in which the end portion of the body portion is positioned in the flange portion of the same as above. (B) is sectional drawing of the state in which the bolt insertion part same as the above and the bolt insertion hole part are connecting.
11A is a cross-sectional view showing a state in which the other end portion of the trunk portion is floating in the middle of fitting the other end portion of the trunk portion to the above-described flange portion, and FIG. It is sectional drawing of the bolt insertion hole part in the middle of fitting the other end part of a trunk | drum to a part.
12A is a cross-sectional view showing a state where the other end portion of the trunk portion is fitted in the bottom portion of the trunk portion fitting groove when the other end portion of the trunk portion is positioned in the flange portion same as the above. FIG. (B) is a sectional view showing a state where the bolt insertion portion and the bolt insertion hole portion are in communication with each other.
13A is a cross-sectional view of a second groove portion of the flange portion of the above, and FIG. 13B is a cross-sectional view of a fitting groove portion.
FIG. 14 is a partially cutaway side view of the above-described cable winding drum stacked up and down.
FIG. 15 is a side view in which the cable winding drum is broken at the other portion in a stacked state.
FIG. 16 is a partially cutaway side view of the same body portion stacked up and down.
FIG. 17 is an explanatory view showing the position of the axially outward projecting portion in a state where the same body portion is stacked vertically.
18 (a) is an exploded side view partially broken before stacking the ridges, and FIG. 18 (b) is a partially broken side view showing a state where the ridges are stacked.
FIG. 19 is a rear view of a collar portion of a conventional example.
20 (a) is a front view of a conventional trunk, and FIG. 20 (b) is a side view with a part broken away of the conventional trunk.
[Explanation of symbols]
A Cable winding drum 1 Bolt insertion part 2 Trunk part 3 Positioning projection part 3a Axial outward projection part 3b Radial inward projection part 4 Hook part 5 Bolt insertion hole part 6 Fitting groove part 6a Groove bottom part 6b Slide groove bottom part 6c Body Part fitting groove bottom 7 Second groove 8 Bolt

Claims

In a cable winding drum in which flanges are attached to both ends of a cylindrical body, positioning protrusions are provided at both ends of the cylindrical body having bolt insertion portions in a direction parallel to the axis. The positioning protrusions at one end of the body part out of the positioning protrusions at both ends of the body part are displaced from the end surface of the one end part of the body part to the inside in the radial direction. A rib portion is formed on the inner periphery of the body portion on the inner side in the axial direction from the axially outward projecting portion, and a positioning protrusion on the other end portion of the body portion. A rib part is formed on the inner periphery of the body part on the inner side in the axial direction from the radially inward projecting part, and is configured by a radially inward projecting part projecting radially inward from the end surface of the other end part of the body part. In the state where the bolt insertion hole is provided, and the positioning projection is in contact with the bottom of the groove on the back surface of the flange and the end of the cylindrical body is floated A fitting groove along a virtual circle centered on the middle of the collar part capable of rotating the part, a second groove part deeper than the fitting groove part is provided in a part of the fitting groove part, and the fitting groove part The bolt insertion part and the bolt insertion hole part are communicated with each other with the end of the barrel part fitted into the second groove and the positioning protrusion fitted into the second groove part, and the bolt insertion hole part and the bolt insertion part of the trunk part are inserted. A cable-winding drum, characterized in that both flanges and the body are joined by a bolt inserted through the part.

The bolt insertion portion is positioned at the positioning projection provided on the body, the end of the bolt insertion hole is opened at the groove bottom of the second groove, and the positioning projection is fitted into the second groove. The cable winding drum according to claim 1, wherein the bolt insertion portion and the bolt insertion hole portion communicate with each other in a state.

The cable winding drum according to claim 1 or 2 , wherein a front side recess is provided in a portion corresponding to the fitting groove on the surface side of the flange portion .