JP3759710B2

JP3759710B2 - Telescopic rod and its length adjustment method

Info

Publication number: JP3759710B2
Application number: JP2001343923A
Authority: JP
Inventors: 和靖田中
Original assignee: Iris Ohyama Inc
Current assignee: Iris Ohyama Inc
Priority date: 2001-09-28
Filing date: 2001-11-08
Publication date: 2006-03-29
Anticipated expiration: 2021-11-08
Also published as: JP2003169724A

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば、室内における床面と天井面との間に縦方向に配置したり、押し入れ内等に横方向に配置することで、所謂突っ張り状態で固定する伸縮棒と、その長さ調節方法に関するものである。
【０００２】
【従来の技術】
様々な用途に対応できる長さ調節可能な伸縮棒として、従来より種々の構造のものが提案されている。その多くは、大径パイプの中に小径パイプを挿入しており、使用に際して、大径パイプから小径パイプを所定の長さに引き出して伸縮棒の長さを大まかに調節し、その後、大径パイプの所定の位置に取り付けた長さ調節手段により、伸縮棒の長さの微調整を行なうものである。
【０００３】
【発明が解決しようとする課題】
しかしながら、従来の伸縮棒においては、以下のような弊害が生じている。
【０００４】
例えば、長尺タイプの伸縮棒においては、比較的に長く形成された大径パイプから小径パイプを引き出し、大径パイプの一端に取り付けた長さ調節手段により、小径パイプを大径パイプに固定すると共に、伸縮棒の長さの微調整を行なっている。そして、伸縮棒を床面と天井面の間に縦方向に配置して固定するとき等は、大径パイプが長く形成されているため、大径パイプの長さ調節手段も比較的上方に位置することとなる。そのため、例えば、つま先で立って可能な限り手を伸ばしたような力の入りにくい状態で長さ調節手段を操作しなければならない事態が生じて、伸縮棒の長さの調節が非常に面倒であった。また、この様な事態を回避するために、伸縮棒の長さを調節する際に、いちいち脚立や踏台等を用意するのも非常に面倒である。
【０００５】
本発明は、叙上のような従来存した問題点に鑑み創出されたもので、伸縮棒を縦方向に配置した際、大径パイプの長さ調節手段を、手の届く範囲の比較的低位置に設けることにより、誰もが長さ調節手段を容易に操作し、伸縮棒の長さ調節を極めて簡単に行なうことができる伸縮棒と、その長さ調節方法を提供することを目的としたものである。
【０００６】
【課題を解決するための手段】
このため、本発明に係る伸縮棒においては、大径パイプと、大径パイプ内に挿入可能な小径パイプとから成り、大径パイプの一端に、小径パイプを所定の長さに引き出した状態で大径パイプに固定する長さ調節手段を設け、この長さ調節手段は、大径パイプの一端に固定した筒状のジョイント基部と、このジョイント基部に一端側が回転可能に取り付けられ、他端側の内周面に雌ネジを設けた筒状の回転ネジ部と、回転ネジ部の雌ネジに螺合する雄ネジを外周面に設けた筒状の移動ネジ部とから成り、ジョイント基部の下方外周面に所定幅の環状凹部を設け、回転ネジ部の上方内周面に所定幅の環状凸部を設け、この回転ネジ部は、ジョイント基部の環状凹部に自身の環状凸部を係合させて、ジョイント基部の下方に回転可能に取り付けられていることで、上述した課題を解決した。
【０００７】
また、大径パイプの長さ調節手段は、大径パイプから小径パイプを引き出して大径パイプと小径パイプを縦方向に配置した際、手の届く範囲の比較的低位置に設けられていることで、同じく上述した課題を解決した。
【０００８】
さらに、大径パイプの長さ調節手段は、小径パイプを所定の長さに引き出した状態で大径パイプに固定すると共に、小径パイプの長さの微調整が可能であることで、同じく上述した課題を解決した。
【００１０】
加えて、移動ネジ部は、小径パイプの外周面に圧接して所定の長さに引き出した小径パイプを大径パイプに固定する止めネジを保持している筒状の係止胴部を備えていることで、同じく上述した課題を解決した。
【００１１】
一方、本発明に係る伸縮棒の長さ調節方法においては、大径パイプから小径パイプを所定の長さに引き出して、移動ネジ部の係止胴部に保持している止めネジを小径パイプの外周面に圧接して伸縮棒の大まかな長さ調節を行なった後、ジョイント基部の所定幅の環状凹部に自身の所定幅の環状凸部を係合させ、ジョイント基部の下方に回転可能に取り付けられている回転ネジ部を回して回転ネジ部と移動ネジ部との捩じ込み深さを変えることで、伸縮棒の長さの微調整を行なうことにより、同じく上述した課題を解決した。
【００１２】
本発明に係る伸縮棒と、その長さ調節方法においては、大径パイプの長さ調節手段が、手の届く範囲の比較的低位置に設けられているので、誰もが長さ調節手段を簡単に操作できる。そのため、大径パイプから小径パイプを所定の長さに引き出した状態において、移動ネジ部の係止胴部に保持している止めネジを回して小径パイプの外周面に止めネジの先端を圧接し、小径パイプの移動を阻止した状態で小径パイプを大径パイプに固定することで、伸縮棒全体の大まかな長さ調節を簡単に行なうことができる。そして、小径パイプを移動ネジ部に固定した状態において、回転ネジ部を回して回転ネジ部と移動ネジ部との捩じ込み深さを変えることで、伸縮棒の長さの微調整を誰もが容易に行なうことができる。
【００１３】
【発明の実施の形態】
以下、図面を参照して本発明の一実施の形態を説明する。本発明に係る伸縮棒は、図１・図２に示すように、大径パイプ１と、大径パイプ１に挿入可能な小径パイプ２とから成る。そして、大径パイプ１の一端に、長さ調節手段Ｐを設けている。
【００１４】
伸縮棒を構成する大径パイプ１と小径パイプ２は、例えば、亜鉛メッキ・ＡＢＳ樹脂コーティング・ナイロンコーティング等を施したステンレススチール製で、大径パイプ１内に小径パイプ２を挿入した状態で小径パイプ２をスライド移動させるため、小径パイプ２の外径は、大径パイプ１の内径よりも僅かに小さくなるように形成されている。また、大径パイプ１と小径パイプ２は、例えば、１ｍ前後の長さに形成されている。
【００１５】
尚、大径パイプ１と小径パイプ２の長さは、１ｍ前後に限定されるものではない。すなわち、大径パイプ１と小径パイプ２を縦方向に配置した際（小径パイプ２が下方で大径パイプ１が上方に位置する場合・大径パイプ１が下方で小径パイプ２が上方に位置する場合のいずれをも含む）、大径パイプ１の長さ調節手段Ｐが、手の届く範囲の比較的低位置にある限り、大径パイプ１と小径パイプ２をどの様な長さに形成しても差し支えない。また、大径パイプ１と小径パイプ２を横方向に配置する際は、大径パイプ１と小径パイプ２をどの様な長さに形成しても良い。さらに、大径パイプ１と小径パイプ２を同じ長さに形成する必要もなく、一方を長く・他方を短かく形成しても差し支えない。
【００１６】
大径パイプ１に設けた長さ調節手段Ｐは、図２・図３に示すように、大径パイプ１から小径パイプ２を所定の長さに引き出した状態で、大径パイプ１に小径パイプ２を固定するものである。また、長さ調節手段Ｐは、図４（ｂ）・（ｃ）に示すように、大径パイプ１に固定した小径パイプ２の長さの微調整が可能である。この長さ調節手段Ｐは、例えば、合成樹脂等の素材を用いて形成されている。また、大径パイプ１の長さ調節手段Ｐは、図４・図５に示すように、小径パイプ２が下方で大径パイプ１が上方に位置する伸縮棒を、縦方向に配置して大径パイプ１から小径パイプ２を所定の長さに引き出した際、手の届く範囲の比較的低位置に設けられている。
【００１７】
さらに、長さ調節手段Ｐは、図２に示すように、大径パイプ１の一端に固定したジョイント基部３と、ジョイント基部３に回転可能に取り付けた回転ネジ部４と、回転ネジ部４に捩じ込まれている移動ネジ部５とから成る。長さ調節手段Ｐを構成するジョイント基部３は、図３に示すように、筒状に形成され、その上端開口縁を大径パイプ１の一端周面部に被せるようにして嵌め込み、大径パイプ１の下端に固定されている。また、図２・図３に示すように、ジョイント基部３の下方には、筒体の外周面に所定幅の環状凹部３Ａを設けている。加えて、環状凹部３Ａの上方には、筒体の外周面に環状凸部３Ｂを設けている。この環状凸部３Ｂは、ジョイント基部３の下方に回転可能に取り付けた回転ネジ部４の上端部が当接するものである。
【００１８】
一方、ジョイント基部３の下方に取り付けられる回転ネジ部４は、図３に示すように、筒状に形成され、筒体の上方内周面に、所定幅の環状凸部４Ａを設けている。また、筒体の環状凸部４Ａよりも下方の内周面には、雌ネジ４Ｂを設けている。この回転ネジ部４は、ジョイント基部３の環状凹部３Ａに自身の環状凸部４Ａを係合させて、ジョイント基部３の下方に回転可能に取り付けられている。
【００１９】
この他、回転ネジ部４の下方に捩じ込まれる移動ネジ部５は、図３に示すように、筒状に形成され、筒体の上方外周面に、雄ネジ５Ａを設けている。この移動ネジ部５の雄ネジ５Ａは、回転ネジ部４の雌ネジ４Ｂに螺合するものである。また、移動ネジ部５は、雄ネジ５Ａの下方に係止胴部５Ｂを備えている。この係止胴部５Ｂは、止めネジ６を保持している。すなわち、係止胴部５Ｂは、自身の肉厚形成部分にネジ孔５Ｃを設け、このネジ孔５Ｃに止めネジ６を捩じ込んで保持している。この様にして、大径パイプ１の下端に長さ調節手段Ｐが設けられることとなる。
【００２０】
そして、図３に示すように、小径パイプ２は、長さ調節手段Ｐを構成する移動ネジ部５内、ジョイント基部３内を通過して、大径パイプ１内に挿入されている。この状態において、移動ネジ部５の止めネジ６を回して筒体の内周面側に移動させ、止めネジ６の先端を小径パイプ２の外周面に圧接することで、大径パイプ１から所定の長さに引き出した小径パイプ２のスライド移動を阻止し、小径パイプ２を大径パイプ１に固定している。この止めネジ６は、例えば、ネジ頭部に幅広な摘み部を設けてあり、止めネジ６の捩じ込み操作を手指により簡単に行なえるようにしている。さらに、移動ネジ部５は、雄ネジ５Ａと係止胴部５Ｂの間において、筒体の外周面に環状凸部５Ｄを設けている。この環状凸部５Ｄは、移動ネジ部５を回転ネジ部４に捩じ込んだ際、回転ネジ部４の下端縁部に当接して、回転ネジ部５における移動ネジ部５のそれ以上の捩じ込み移動を停止させるものである。
【００２１】
この様に構成された伸縮棒は、図４（ａ）・（ｂ）に示すように、大径パイプ１から小径パイプ２を所定の長さに引き出し、移動ネジ部５の係止胴部５Ｂに保持している止めネジ６を回してその先端を小径パイプ２の外周面に圧接し、移動ネジ部５に小径パイプ２を固定することで伸縮棒の大まかな長さ調節を行なう。そして、図４（ｃ）に示すように、一方の手で大径パイプ１を握みながら他方の手で回転ネジ部４を回し、回転ネジ部４と移動ネジ部５における捩じ込み深さを変えることで小径パイプ２を若干伸ばし、伸縮棒が突っ張った状態となるよう伸縮棒の長さの微調整を行なうものである。
【００２２】
以下に、本発明に係る伸縮棒の具体的な使用の一例を説明する。まず、伸縮棒を使用せずに所定の場所に保管するときは、図４（ａ）に示すように、大径パイプ１の長さ調節手段Ｐにおける止めネジ６を緩めた状態とし、大径パイプ１の奥まで小径パイプ２をスライド移動させ、伸縮棒を可能な限り短かくする。そして、止めネジ６を回してその先端を小径パイプ２の外周面に圧接させると、伸縮棒の短かくなった状態が確実に維持される。
【００２３】
この様に短かくなっている伸縮棒を、例えば、床面と天井面の間に配置して使用する際は、床面と天井面との間における距離に対応するため、移動ネジ部５の係止胴部５Ｂに保持している止めネジ６を緩めた状態とし、図４（ａ）・（ｂ）に示すように、大径パイプ１から小径パイプ２を所定の長さに引き出す。そして、適当な位置で移動ネジ部５の止めネジ６を回して止めネジ６の先端を小径パイプ２の外周面に圧接し、小径パイプ２のスライド移動を阻止した状態で小径パイプ２を大径パイプ１に固定する。この様にして、伸縮棒の大まかな長さ調節を行なう。
【００２４】
その後、一方の手で大径パイプ１を握みながら他方の手で回転ネジ部４を所定の方向に回し、回転ネジ部４の下方に捩じ込んでいる移動ネジ部５の捩じ込み深さを変えることで、伸縮棒の長さの微調整を行なう。このとき、回転ネジ部４の回転により小径パイプ２を固定している移動ネジ部５を下方に移動させて、小径パイプ２を若干伸ばした状態とする。そして、図４（ｃ）に示すように、床面と天井面に小径パイプ２の一端と大径パイプ１の一端が突っ張り状態となって当接し、床面と天井面の間に伸縮棒が固定される。このとき、大径パイプ１と小径パイプ２の端部に、接触面積の大きい当接片７を取り付けておくと、床面と天井面に傷を付けることがない。
【００２５】
この様にして、図５に示すように、例えば、押し入れ内等において、２本の伸縮棒を適当な間隔で立設し、それぞれの伸縮棒に取り付けた所定のホルダー８を介して横杆９を設置したときには、この横杆９にハンガー等を引っ掛けて衣服を吊るすことができる。また、図６に示すように、例えば、出窓等において伸縮棒を横方向に配置し、窓の側面に伸縮棒を突っ張り状態に取り付けると、所定のリングを介してカーテンを吊り下げるためのカーテン棒等としても利用できる。
【００２６】
尚、図１乃至図５に示す伸縮棒は、長さ調節手段Ｐを備えている大径パイプ１が上方に位置し、この大径パイプ１の下方において小径パイプ２を出し入れする態様であるが、本発明はこれに何ら限定されるものではない。例えば、図７乃至図９に示すように、長さ調節手段Ｐを備えている大径パイプ１が下方に位置し、この大径パイプ１の上方において小径パイプ２を出し入れする態様のものであっても差し支えない。
【００２７】
すなわち、大径パイプ１が下方に位置する態様において、長さ調節手段Ｐを構成するジョイント基部３は、図８・図９に示すように、筒体の下端開口縁を大径パイプ１の一端周面部に被せるようにして嵌め込み、大径パイプ１の上端に固定されている。また、ジョイント基部３の上方には、筒体の外周面に所定幅の環状凹部３Ａを設け、環状凹部３Ａの下方には、筒体の外周面に環状凸部３Ｂを設けている。この環状凸部３Ｂは、ジョイント基部３の上方に回転可能に取り付けた回転ネジ部４の下端部が当接するものである。
【００２８】
一方、ジョイント基部３の上方に取り付けられる回転ネジ部４は、図９に示すように、筒体の下方内周面に、所定幅の環状凸部４Ａを設けている。また、筒体の環状凸部４Ａよりも上方の内周面には、雌ネジ４Ｂを設けている。この回転ネジ部４は、ジョイント基部３の環状凹部３Ａに自身の環状凸部４Ａを係合させて、ジョイント基部３の上方に回転可能に取り付けられている。
【００２９】
この他、回転ネジ部４の上方に捩じ込まれる移動ネジ部５は、図９に示すように、筒体の下方外周面に、雄ネジ５Ａを設けている。この移動ネジ部５の雄ネジ５Ａは、回転ネジ部４の雌ネジ４Ｂに螺合するものである。また、移動ネジ部５は、雄ネジ５Ａの上方に係止胴部５Ｂを備え、この係止胴部５Ｂは、止めネジ６を保持している。
【００３０】
この様に大径パイプ１が下方に位置する伸縮棒を、例えば、床面と天井面の間に配置して使用する際は、床面と天井面との間における距離に対応するため、移動ネジ部５の係止胴部５Ｂに保持している止めネジ６を緩めた状態とし、図１０（ａ）・（ｂ）に示すように、大径パイプ１から小径パイプ２を所定の長さに引き出す。そして、適当な位置で移動ネジ部５の止めネジ６を回して止めネジ６の先端を小径パイプ２の外周面に圧接し、小径パイプ２のスライド移動を阻止した状態で小径パイプ２を大径パイプ１に固定する。この様にして、伸縮棒の大まかな長さ調節を行なう。
【００３１】
その後、一方の手で大径パイプ１を握みながら他方の手で回転ネジ部４を所定の方向に回し、回転ネジ部４の上方に捩じ込んでいる移動ネジ部５の捩じ込み深さを変えることで、伸縮棒の長さの微調整を行なう。このとき、回転ネジ部４の回転により小径パイプ２を固定している移動ネジ部５を上方に移動させて、小径パイプ２を若干伸ばした状態とする。そして、図１０（ｃ）に示すように、床面と天井面に大径パイプ１の一端と小径パイプ２の一端が突っ張り状態となって当接し、床面と天井面の間に伸縮棒が固定される。
【００３２】
この様に本発明に係る伸縮棒は、室内における床面と天井面の間や、出窓や押し入れ内等における所定の空間において、縦方向や横方向に配置され、小径パイプ２を伸ばして大径パイプ１と小径パイプ２による所謂突っ張り状態を形成して固定されるものである。
【００３３】
【発明の効果】
本発明に係る伸縮棒は、大径パイプ１と、大径パイプ１内に挿入可能な小径パイプ２とから成り、大径パイプ１の一端に、小径パイプ２を所定の長さに引き出した状態で大径パイプ１に固定する長さ調節手段Ｐを設けたことから、この長さ調節手段Ｐを操作して、誰もが簡単に伸縮棒の長さを調節できる。その結果、例えば、室内における床面と天井面の間や、出窓や押し入れ内等における所定の空間において、縦方向や横方向に伸縮棒を配置し、小径パイプ２を伸ばして大径パイプ１と小径パイプ２による所謂突っ張り状態を形成し、伸縮棒を簡単に固定できる。
【００３４】
また、大径パイプ１の長さ調節手段Ｐは、大径パイプ１から小径パイプ２を引き出して大径パイプ１と小径パイプ２を縦方向に配置した際、手の届く範囲の比較的低位置に設けられていることから、長さ調節手段Ｐを誰もが確実に手で握んで操作し、伸縮棒の長さを調節できる。すなわち、長さ調節手段Ｐは、手の届く範囲の比較的低位置に設けられているため、つま先で立って手を可能な限り上方に伸ばしたような力の入りにくい状態で長さ調節手段Ｐを操作する必要が全くないのである。また、伸縮棒の長さを調節する際に、脚立や踏台等をその都度用意する必要も勿論ない。
【００３５】
さらに、大径パイプ１の長さ調節手段Ｐは、小径パイプ２を所定の長さに引き出した状態で大径パイプ１に固定すると共に、小径パイプ２の長さの微調整が可能であることから、例えば、床面と天井面の間に伸縮棒を突っ張り状態に配置し、床面と天井面に適正な負荷がかかった状態で伸縮棒を確実に固定できる。そのため、突っ張り状態による負荷をかけ過ぎて、伸縮棒により床面や天井面に傷を付けることがない。
【００３６】
そして、長さ調節手段Ｐは、大径パイプ１の一端に固定した筒状のジョイント基部３と、このジョイント基部３に一端側が回転可能に取り付けられ、他端側の内周面に雌ネジ４Ｂを設けた筒状の回転ネジ部４と、回転ネジ部４の雌ネジ４Ｂに螺合する雄ネジ５Ａを外周面に設けた筒状の移動ネジ部５とから成るので、回転ネジ部４を所定方向に回転させて、小径パイプ２を固定している移動ネジ部５を回転ネジ部４内において移動させることで、大径パイプ１と小径パイプ２とから成る伸縮棒の長さを誰もが容易に微調整できる。また、移動ネジ部５は、自らの雄ネジ５Ａを回転ネジ部４の雌ネジ４Ｂに螺合させているため、小径パイプ２を伸ばして床面と天井面の間等に突っ張り状態で固定されている伸縮棒が、不意にその長さを短かくして突っ張り状態を喪失し、伸縮棒が倒れてしまうような事態の発生を確実に阻止している。
【００３７】
加えて、移動ネジ部５は、小径パイプ２の外周面に圧接して所定の長さに引き出した小径パイプ２を大径パイプ１に固定する止めネジ６を保持している筒状の係止胴部５Ｂを備えているので、止めネジ６を緩めた状態にしたときは、大径パイプ１から小径パイプ２を素早く引き出して、伸縮棒の大まかな長さ調節を即座に行なうことができる。また、止めネジ６を捩じ込むという簡単な操作により、小径パイプ２を大径パイプ１に誰もが確実に固定できる。すなわち、止めネジ６を回して止めネジ６の先端を小径パイプ２の外周面に圧接し、小径パイプ２のスライド移動を阻止した状態で小径パイプ２を大径パイプ１に固定できるのである。
【００３８】
一方、本発明に係る伸縮棒の長さ調節方法においては、大径パイプ１から小径パイプ２を所定の長さに引き出して、移動ネジ部５の係止胴部５Ｂに保持している止めネジ６を小径パイプ２の外周面に圧接することで、誰もが伸縮棒の大まかな長さ調節を即座に行なうことができる。また、回転ネジ部４を回して回転ネジ部４と移動ネジ部５との捩じ込み深さを変えることで、誰もが簡単に伸縮棒の長さの微調整を行なうことができる。すなわち、回転ネジ部４の回転により小径パイプ２を固定している移動ネジ部５を大径パイプ１と反対方向に移動させて、小径パイプ２を若干伸ばした状態とする。そして、例えば、床面と天井面に、小径パイプ２の一端と大径パイプ１の一端が突っ張り状態となって当接し、床面と天井面の間に伸縮棒が固定されるのである。また、伸縮棒を取り外すときは、回転ネジ部４を逆方向に回して小径パイプ２を若干短かくし、その突っ張り状態を解除すれば良い。
【図面の簡単な説明】
【図１】本発明に係る伸縮棒の一実施の形態を示すもので、長さ調節手段を備えている大径パイプが上方に存在する状態において、大径パイプの下方から小径パイプを挿入した状態を示す斜視図である。
【図２】長さ調節手段を備えている大径パイプが上方に存在する状態において、ジョイント基部と回転ネジ部と移動ネジ部から成る長さ調節手段の構成を示す分解斜視図である。
【図３】長さ調節手段を備えている大径パイプが上方に存在する状態において、大径パイプの下方から小径パイプを挿入した状態を示す長さ調節手段の側断面図である。
【図４】長さ調節手段を備えている大径パイプが上方に存在する状態において、伸縮棒の長さを調節する過程を示すもので、（ａ）は大径パイプから小径パイプを下方に引き出す前の状態の側面図、（ｂ）は大径パイプから小径パイプを所定の長さに引き出して大まかな長さ調節を行なった状態の側面図、（ｃ）は回転ネジ部を回して小径パイプを若干伸ばすことで伸縮棒の長さの微調整を行ない、伸縮棒を床面と天井面の間等に突っ張り状態に固定した状態を示す側面図である。
【図５】本発明に係る伸縮棒の他の実施の形態を示すもので、２本の伸縮棒を適当な間隔で立設し、両伸縮棒に、所定のホルダーを介して横杆を設置した状態を示す側面図である。
【図６】本発明に係る伸縮棒の他の実施の形態を示すもので、伸縮棒を横方向に配置し、突っ張り状態に固定した状態を示す側面図である。
【図７】本発明に係る伸縮棒の他の実施の形態を示すもので、長さ調節手段を備えている大径パイプが下方に存在する状態において、大径パイプの上方から小径パイプを挿入した状態を示す斜視図である。
【図８】長さ調節手段を備えている大径パイプが下方に存在する状態において、ジョイント基部と回転ネジ部と移動ネジ部から成る長さ調節手段の構成を示す分解斜視図である。
【図９】長さ調節手段を備えている大径パイプが下方に存在する状態において、大径パイプの上方から小径パイプを挿入した状態を示す長さ調節手段の側断面図である。
【図１０】長さ調節手段を備えている大径パイプが下方に存在する状態において、伸縮棒の長さを調節する過程を示すもので、（ａ）は大径パイプから小径パイプを上方に引き出す前の状態の側面図、（ｂ）は大径パイプから小径パイプを所定の長さに引き出して大まかな長さ調節を行なった状態の側面図、（ｃ）は回転ネジ部を回して小径パイプを若干伸ばすことで伸縮棒の長さの微調整を行ない、伸縮棒を床面と天井面の間等に突っ張り状態に固定した状態を示す側面図である。
【符号の説明】
Ｐ…長さ調節手段
１…大径パイプ
２…小径パイプ
３…ジョイント基部
３Ａ…環状凹部
３Ｂ…環状凸部
４…回転ネジ部
４Ａ…環状凸部
４Ｂ…雌ネジ
５…移動ネジ部
５Ａ…雄ネジ
５Ｂ…係止胴部
５Ｃ…ネジ孔
５Ｄ…環状凸部
６…止めネジ
７…当接片
８…ホルダー
９…横杆[0001]
BACKGROUND OF THE INVENTION
The present invention is, for example, a telescopic rod that is fixed in a so-called tension state by being disposed vertically between a floor surface and a ceiling surface in a room, or laterally disposed in a closet or the like, and its length adjustment It is about the method.
[0002]
[Prior art]
As an extendable bar whose length can be adjusted to suit various applications, ones having various structures have been proposed. Many of them have a small diameter pipe inserted into a large diameter pipe, and in use, the length of the telescopic rod is roughly adjusted by pulling the small diameter pipe from the large diameter pipe to a predetermined length, and then the large diameter pipe. The length of the telescopic rod is finely adjusted by a length adjusting means attached to a predetermined position of the pipe.
[0003]
[Problems to be solved by the invention]
However, the conventional telescopic rod has the following problems.
[0004]
For example, in a long-type telescopic rod, a small-diameter pipe is pulled out from a comparatively long large-diameter pipe, and the small-diameter pipe is fixed to the large-diameter pipe by length adjusting means attached to one end of the large-diameter pipe. At the same time, the length of the telescopic bar is finely adjusted. And when the telescopic bar is placed and fixed vertically between the floor surface and the ceiling surface, etc., since the large diameter pipe is formed long, the length adjusting means of the large diameter pipe is also positioned relatively upward. Will be. For this reason, for example, there is a situation where the length adjustment means must be operated in a state where it is difficult to put in force as if standing on the tiptoe and reaching out as much as possible, and the adjustment of the length of the telescopic rod is very troublesome. there were. In addition, in order to avoid such a situation, it is very troublesome to prepare a stepladder, a platform, etc. each time the length of the telescopic bar is adjusted.
[0005]
The present invention was created in view of the conventional problems as described above. When the telescopic rods are arranged in the vertical direction, the length adjusting means of the large-diameter pipe is relatively low within reach. The purpose of the present invention is to provide a telescopic rod that allows anyone to easily operate the length adjusting means and adjust the length of the telescopic rod very easily by providing the position, and a method for adjusting the length thereof. Is.
[0006]
[Means for Solving the Problems]
For this reason, the telescopic rod according to the present invention comprises a large-diameter pipe and a small-diameter pipe that can be inserted into the large-diameter pipe, and the small-diameter pipe is pulled out to a predetermined length at one end of the large-diameter pipe. A length adjusting means for fixing to a large-diameter pipe is provided. The length adjusting means is a cylindrical joint base fixed to one end of the large-diameter pipe, and one end side is rotatably attached to the joint base. A cylindrical rotating screw portion provided with a female screw on the inner peripheral surface thereof, and a cylindrical moving screw portion provided on the outer peripheral surface with a male screw screwed to the female screw of the rotating screw portion, below the joint base An annular recess having a predetermined width is provided on the outer peripheral surface, and an annular convex portion having a predetermined width is provided on the upper inner peripheral surface of the rotating screw portion. The rotating screw portion engages the annular convex portion with the annular concave portion of the joint base. Mounted rotatably under the joint base By have solved the problems described above.
[0007]
Also, the length adjustment means of the large diameter pipe should be provided at a relatively low position within reach when the small diameter pipe is pulled out from the large diameter pipe and the large diameter pipe and the small diameter pipe are arranged in the vertical direction. The problem described above has been solved.
[0008]
Further, the length adjusting means of the large diameter pipe is fixed to the large diameter pipe in a state where the small diameter pipe is pulled out to a predetermined length, and the length of the small diameter pipe can be finely adjusted. Solved the problem.
[0010]
In addition, the moving screw portion includes a cylindrical locking body portion that holds a set screw for fixing the small-diameter pipe pulled out to a predetermined length by being pressed against the outer peripheral surface of the small-diameter pipe to the large-diameter pipe. This solves the same problem as described above.
[0011]
On the other hand, in the length adjusting method of the telescopic rod according to the present invention, the small diameter pipe is pulled out from the large diameter pipe to a predetermined length, and the set screw held in the locking body portion of the moving screw portion is attached to the small diameter pipe. After roughly adjusting the length of the telescopic rod by pressing against the outer peripheral surface, engage the annular protrusion of its predetermined width with the annular recess of the predetermined width of the joint base, and attach it rotatably below the joint base The above-mentioned problem was solved by finely adjusting the length of the telescopic rod by changing the screwing depth between the rotating screw portion and the moving screw portion by turning the rotating screw portion.
[0012]
In the telescopic rod and the length adjusting method according to the present invention, since the length adjusting means of the large-diameter pipe is provided at a relatively low position within reach, everyone can use the length adjusting means. Easy to operate. For this reason, in the state where the small diameter pipe is pulled out from the large diameter pipe to a predetermined length, the set screw held on the locking body of the moving screw part is turned to press the tip of the set screw against the outer peripheral surface of the small diameter pipe. By fixing the small-diameter pipe to the large-diameter pipe while preventing the movement of the small-diameter pipe, it is possible to easily adjust the approximate length of the entire telescopic rod. And in a state where the small diameter pipe is fixed to the moving screw part, by turning the rotating screw part and changing the screwing depth between the rotating screw part and the moving screw part, anyone can fine-tune the length of the telescopic rod. Can be done easily.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the telescopic rod according to the present invention includes a large-diameter pipe 1 and a small-diameter pipe 2 that can be inserted into the large-diameter pipe 1. A length adjusting means P is provided at one end of the large-diameter pipe 1.
[0014]
The large-diameter pipe 1 and the small-diameter pipe 2 constituting the expansion rod are made of, for example, stainless steel coated with zinc plating, ABS resin coating, nylon coating, etc., and the small-diameter pipe 2 is inserted into the large-diameter pipe 1 and the small-diameter pipe 2 is small-diameter. In order to slide the pipe 2, the outer diameter of the small diameter pipe 2 is formed to be slightly smaller than the inner diameter of the large diameter pipe 1. The large-diameter pipe 1 and the small-diameter pipe 2 are formed with a length of about 1 m, for example.
[0015]
In addition, the length of the large diameter pipe 1 and the small diameter pipe 2 is not limited to around 1 m. That is, when the large-diameter pipe 1 and the small-diameter pipe 2 are arranged in the vertical direction (when the small-diameter pipe 2 is below and the large-diameter pipe 1 is above), the large-diameter pipe 1 is below and the small-diameter pipe 2 is above As long as the length adjusting means P of the large-diameter pipe 1 is at a relatively low position within reach, the long-diameter pipe 1 and the small-diameter pipe 2 can be formed in any length. There is no problem. Moreover, when arrange | positioning the large diameter pipe 1 and the small diameter pipe 2 to a horizontal direction, you may form the large diameter pipe 1 and the small diameter pipe 2 in what length. Furthermore, it is not necessary to form the large diameter pipe 1 and the small diameter pipe 2 to the same length, and it is possible to form one long and the other short.
[0016]
As shown in FIGS. 2 and 3, the length adjusting means P provided on the large-diameter pipe 1 has a small-diameter pipe 1 connected to the large-diameter pipe 1 in a state where the small-diameter pipe 2 is pulled out from the large-diameter pipe 1 to a predetermined length. 2 is fixed. Further, the length adjusting means P can finely adjust the length of the small-diameter pipe 2 fixed to the large-diameter pipe 1 as shown in FIGS. 4 (b) and 4 (c). This length adjustment means P is formed using materials, such as a synthetic resin, for example. Further, as shown in FIGS. 4 and 5, the length adjusting means P of the large-diameter pipe 1 has a large extension rod in which the small-diameter pipe 2 is positioned downward and the large-diameter pipe 1 is positioned vertically. When the small diameter pipe 2 is pulled out from the diameter pipe 1 to a predetermined length, it is provided at a relatively low position within reach.
[0017]
Further, as shown in FIG. 2, the length adjusting means P includes a joint base portion 3 fixed to one end of the large-diameter pipe 1, a rotating screw portion 4 rotatably attached to the joint base portion 3, and a rotating screw portion 4. It consists of a moving screw portion 5 that is screwed. As shown in FIG. 3, the joint base 3 constituting the length adjusting means P is formed in a cylindrical shape, and is fitted so that the upper end opening edge covers one end surface portion of the large-diameter pipe 1. It is fixed to the lower end of. As shown in FIGS. 2 and 3, an annular recess 3 A having a predetermined width is provided on the outer peripheral surface of the cylindrical body below the joint base 3. In addition, an annular convex portion 3B is provided on the outer peripheral surface of the cylindrical body above the annular concave portion 3A. This annular convex part 3B contacts the upper end part of the rotating screw part 4 attached to the lower part of the joint base part 3 so that rotation is possible.
[0018]
On the other hand, as shown in FIG. 3, the rotating screw portion 4 attached below the joint base portion 3 is formed in a cylindrical shape, and an annular convex portion 4A having a predetermined width is provided on the upper inner peripheral surface of the cylindrical body. Moreover, the internal thread 4B is provided in the inner peripheral surface below 4 A of cyclic | annular convex parts of a cylinder. The rotating screw part 4 is rotatably attached to the lower part of the joint base 3 by engaging the annular convex part 4 A with the annular concave part 3 A of the joint base 3.
[0019]
In addition, as shown in FIG. 3, the moving screw portion 5 to be screwed below the rotating screw portion 4 is formed in a cylindrical shape, and a male screw 5 A is provided on the upper outer peripheral surface of the cylindrical body. The male screw 5 A of the moving screw portion 5 is screwed into the female screw 4 B of the rotating screw portion 4. Moreover, the moving screw part 5 is provided with a locking body part 5B below the male screw 5A. The locking body 5B holds a set screw 6. That is, the locking body 5B is provided with a screw hole 5C in its own thickness forming portion, and a set screw 6 is screwed and held in the screw hole 5C. In this way, the length adjusting means P is provided at the lower end of the large-diameter pipe 1.
[0020]
As shown in FIG. 3, the small-diameter pipe 2 is inserted into the large-diameter pipe 1 through the moving screw portion 5 and the joint base portion 3 constituting the length adjusting means P. In this state, the set screw 6 of the moving screw part 5 is turned to move toward the inner peripheral surface side of the cylinder, and the tip of the set screw 6 is pressed against the outer peripheral surface of the small-diameter pipe 2 so that the predetermined diameter is removed from the large-diameter pipe 1. The small-diameter pipe 2 drawn out to the length is prevented from sliding and the small-diameter pipe 2 is fixed to the large-diameter pipe 1. The set screw 6 is provided with a wide knob on the screw head, for example, so that the set screw 6 can be easily screwed in with fingers. Further, the moving screw portion 5 is provided with an annular convex portion 5D on the outer peripheral surface of the cylindrical body between the male screw 5A and the locking barrel portion 5B. When the moving screw portion 5 is screwed into the rotating screw portion 4, the annular convex portion 5 D comes into contact with the lower end edge of the rotating screw portion 4, and further twists the moving screw portion 5 in the rotating screw portion 5. This stops the movement.
[0021]
As shown in FIGS. 4 (a) and 4 (b), the telescopic rod configured in this manner is obtained by pulling out the small-diameter pipe 2 from the large-diameter pipe 1 to a predetermined length and locking the trunk 5B of the moving screw portion 5. By rotating the set screw 6 held at the end, the tip thereof is pressed against the outer peripheral surface of the small-diameter pipe 2, and the small-diameter pipe 2 is fixed to the moving screw portion 5 to roughly adjust the length of the telescopic rod. Then, as shown in FIG. 4 (c), the rotary screw portion 4 is turned with the other hand while holding the large-diameter pipe 1 with one hand, and the screwing depth in the rotary screw portion 4 and the moving screw portion 5 is turned. By slightly changing the length of the small-diameter pipe 2, the length of the telescopic rod is finely adjusted so that the telescopic rod is stretched.
[0022]
Below, an example of the concrete use of the expansion-contraction rod which concerns on this invention is demonstrated. First, when storing in a predetermined place without using a telescopic rod, the set screw 6 in the length adjusting means P of the large-diameter pipe 1 is loosened as shown in FIG. Slide the small-diameter pipe 2 to the back of the pipe 1 and make the telescopic rod as short as possible. And if the set screw 6 is turned and the front-end | tip is press-contacted to the outer peripheral surface of the small diameter pipe 2, the short state of an expansion-contraction rod will be maintained reliably.
[0023]
When the telescopic rod having such a short length is used, for example, between the floor surface and the ceiling surface, it corresponds to the distance between the floor surface and the ceiling surface. As shown in FIGS. 4A and 4B, the small diameter pipe 2 is pulled out to a predetermined length from the large diameter pipe 1 as shown in FIGS. Then, the set screw 6 of the moving screw portion 5 is turned at an appropriate position so that the tip of the set screw 6 is pressed against the outer peripheral surface of the small diameter pipe 2, and the small diameter pipe 2 is moved to a large diameter while preventing the small diameter pipe 2 from sliding. Fix to the pipe 1. In this way, the rough length of the telescopic rod is adjusted.
[0024]
Then, while holding the large-diameter pipe 1 with one hand, the rotating screw part 4 is turned in a predetermined direction with the other hand, and the screwing depth of the moving screw part 5 screwed below the rotating screw part 4 is increased. By changing the length, the length of the telescopic bar is finely adjusted. At this time, the moving screw portion 5 that fixes the small-diameter pipe 2 is moved downward by the rotation of the rotating screw portion 4 so that the small-diameter pipe 2 is slightly extended. Then, as shown in FIG. 4C, one end of the small diameter pipe 2 and one end of the large diameter pipe 1 are in contact with the floor surface and the ceiling surface in a stretched state, and the telescopic rod is interposed between the floor surface and the ceiling surface. Fixed. At this time, if the contact piece 7 having a large contact area is attached to the ends of the large-diameter pipe 1 and the small-diameter pipe 2, the floor surface and the ceiling surface are not damaged.
[0025]
In this way, as shown in FIG. 5, for example, in a close-in or the like, two telescopic rods are erected at an appropriate interval, and the horizontal rod 9 is attached via a predetermined holder 8 attached to each telescopic rod. When the hanger is installed, clothes can be hung by hooking a hanger or the like on the reed 9. Moreover, as shown in FIG. 6, for example, when an extendable bar is arranged in a lateral direction in a bay window and the extendable bar is attached to the side of the window in a stretched state, the curtain bar for hanging the curtain through a predetermined ring Etc. can also be used.
[0026]
In addition, although the expansion rod shown in FIG. 1 thru | or FIG. 5 is the aspect which the large diameter pipe 1 provided with the length adjustment means P is located upwards, the small diameter pipe 2 is taken in / out below this large diameter pipe 1. FIG. However, the present invention is not limited to this. For example, as shown in FIGS. 7 to 9, the large-diameter pipe 1 having the length adjusting means P is located below, and the small-diameter pipe 2 is taken in and out above the large-diameter pipe 1. There is no problem.
[0027]
That is, in the aspect in which the large-diameter pipe 1 is positioned below, the joint base 3 constituting the length adjusting means P has a lower end opening edge of the cylindrical body at one end of the large-diameter pipe 1 as shown in FIGS. It is fitted so as to cover the peripheral surface portion, and is fixed to the upper end of the large-diameter pipe 1. In addition, an annular recess 3A having a predetermined width is provided on the outer peripheral surface of the cylindrical body above the joint base 3, and an annular convex portion 3B is provided on the outer peripheral surface of the cylindrical body below the annular recess 3A. This annular convex part 3B contacts the lower end part of the rotating screw part 4 rotatably attached above the joint base part 3.
[0028]
On the other hand, as shown in FIG. 9, the rotating screw part 4 attached above the joint base part 3 is provided with an annular convex part 4A having a predetermined width on the lower inner peripheral surface of the cylindrical body. Moreover, the internal thread 4B is provided in the internal peripheral surface above 4 A of cyclic | annular convex parts of a cylinder. The rotating screw portion 4 is rotatably attached to the upper portion of the joint base portion 3 by engaging its annular convex portion 4A with the annular concave portion 3A of the joint base portion 3.
[0029]
In addition, as shown in FIG. 9, the moving screw portion 5 to be screwed above the rotating screw portion 4 is provided with a male screw 5A on the lower outer peripheral surface of the cylindrical body. The male screw 5 A of the moving screw portion 5 is screwed into the female screw 4 B of the rotating screw portion 4. The moving screw portion 5 includes a locking body portion 5B above the male screw 5A, and the locking body portion 5B holds a set screw 6.
[0030]
In this way, when the telescopic rod in which the large-diameter pipe 1 is positioned below is used, for example, by placing it between the floor surface and the ceiling surface, it moves to correspond to the distance between the floor surface and the ceiling surface. As shown in FIGS. 10 (a) and 10 (b), the set screw 6 held on the locking body 5B of the screw portion 5 is loosened, and the small diameter pipe 2 is extended to a predetermined length as shown in FIGS. Pull out. Then, the set screw 6 of the moving screw portion 5 is turned at an appropriate position so that the tip of the set screw 6 is pressed against the outer peripheral surface of the small diameter pipe 2, and the small diameter pipe 2 is moved to a large diameter while preventing the small diameter pipe 2 from sliding. Fix to the pipe 1. In this way, the rough length of the telescopic rod is adjusted.
[0031]
Thereafter, while holding the large-diameter pipe 1 with one hand, the rotating screw part 4 is turned in a predetermined direction with the other hand, and the screwing depth of the moving screw part 5 screwed above the rotating screw part 4 is increased. By changing the length, the length of the telescopic bar is finely adjusted. At this time, the moving screw portion 5 that fixes the small-diameter pipe 2 is moved upward by the rotation of the rotating screw portion 4 so that the small-diameter pipe 2 is slightly stretched. Then, as shown in FIG. 10 (c), one end of the large-diameter pipe 1 and one end of the small-diameter pipe 2 are brought into contact with the floor surface and the ceiling surface in a stretched state, and an expansion rod is interposed between the floor surface and the ceiling surface. Fixed.
[0032]
As described above, the telescopic rod according to the present invention is arranged in a vertical direction or a horizontal direction between a floor surface and a ceiling surface in a room or in a predetermined space such as in a bay window or a closet. The pipe 1 and the small-diameter pipe 2 are fixed in a so-called stretched state.
[0033]
【The invention's effect】
The telescopic rod according to the present invention includes a large-diameter pipe 1 and a small-diameter pipe 2 that can be inserted into the large-diameter pipe 1. The small-diameter pipe 2 is drawn out to a predetermined length at one end of the large-diameter pipe 1. Since the length adjusting means P for fixing to the large-diameter pipe 1 is provided, anyone can easily adjust the length of the telescopic bar by operating the length adjusting means P. As a result, for example, in a predetermined space between the floor surface and the ceiling surface in the room, in a bay window or in a closet, etc., a telescopic rod is arranged in the vertical direction or the horizontal direction, and the small diameter pipe 2 is extended to A so-called tension state is formed by the small-diameter pipe 2, and the telescopic rod can be easily fixed.
[0034]
The length adjusting means P of the large diameter pipe 1 is a relatively low position within the reach of the large diameter pipe 1 when the small diameter pipe 2 is pulled out from the large diameter pipe 1 and the large diameter pipe 1 and the small diameter pipe 2 are arranged vertically. Therefore, anyone can hold and operate the length adjusting means P with his / her hand to adjust the length of the telescopic rod. That is, since the length adjusting means P is provided at a relatively low position within the reach of the hand, the length adjusting means P is in a state where it is difficult to enter a force such as standing on the toes and extending the hand as much as possible. There is no need to manipulate P. In addition, when adjusting the length of the telescopic bar, it is of course unnecessary to prepare a stepladder, a step or the like each time.
[0035]
Furthermore, the length adjusting means P of the large-diameter pipe 1 can be fixed to the large-diameter pipe 1 in a state where the small-diameter pipe 2 is pulled out to a predetermined length, and the length of the small-diameter pipe 2 can be finely adjusted. Thus, for example, the telescopic rod is disposed in a stretched state between the floor surface and the ceiling surface, and the telescopic rod can be reliably fixed in a state where an appropriate load is applied to the floor surface and the ceiling surface. Therefore, the load due to the stretched state is not excessively applied, and the floor surface and the ceiling surface are not damaged by the telescopic rod.
[0036]
The length adjusting means P includes a cylindrical joint base 3 fixed to one end of the large-diameter pipe 1, one end side rotatably attached to the joint base 3, and a female screw 4 B on the inner peripheral surface on the other end side. And the cylindrical moving screw portion 5 provided on the outer peripheral surface with a male screw 5A screwed to the female screw 4B of the rotating screw portion 4, the rotating screw portion 4 is By rotating the moving screw portion 5 that fixes the small-diameter pipe 2 in the rotating screw portion 4 by rotating in a predetermined direction, the length of the telescopic rod composed of the large-diameter pipe 1 and the small-diameter pipe 2 can be reduced by anyone. Can be easily fine-tuned. Further, since the moving screw portion 5 has its own male screw 5A screwed into the female screw 4B of the rotating screw portion 4, the small diameter pipe 2 is extended and fixed between the floor surface and the ceiling surface in a stretched state. The telescopic rod that has been suddenly shortened has lost its tension and has prevented the telescopic rod from collapsing.
[0037]
In addition, the moving screw portion 5 is a cylindrical lock that holds a set screw 6 that fixes the small-diameter pipe 2 that is pressed to the outer peripheral surface of the small-diameter pipe 2 and pulled out to a predetermined length to the large-diameter pipe 1. Since the body portion 5B is provided, when the set screw 6 is loosened, the small-diameter pipe 2 can be quickly pulled out from the large-diameter pipe 1, and the rough length of the telescopic rod can be adjusted immediately. Further, anyone can securely fix the small diameter pipe 2 to the large diameter pipe 1 by a simple operation of screwing the set screw 6. That is, the small-diameter pipe 2 can be fixed to the large-diameter pipe 1 in a state in which the small-diameter pipe 2 is prevented from sliding by turning the set screw 6 to press the tip of the set screw 6 against the outer peripheral surface of the small-diameter pipe 2.
[0038]
On the other hand, in the method of adjusting the length of the telescopic rod according to the present invention, the set screw that pulls out the small diameter pipe 2 from the large diameter pipe 1 to a predetermined length and holds it on the locking body 5B of the moving screw portion 5 is provided. By pressing 6 to the outer peripheral surface of the small-diameter pipe 2, anyone can immediately adjust the approximate length of the telescopic rod. Also, by turning the rotating screw portion 4 and changing the screwing depth between the rotating screw portion 4 and the moving screw portion 5, anyone can easily finely adjust the length of the telescopic rod. That is, the moving screw portion 5 that fixes the small-diameter pipe 2 by the rotation of the rotating screw portion 4 is moved in the opposite direction to the large-diameter pipe 1 so that the small-diameter pipe 2 is slightly stretched. Then, for example, one end of the small-diameter pipe 2 and one end of the large-diameter pipe 1 are brought into contact with the floor surface and the ceiling surface, and the telescopic rod is fixed between the floor surface and the ceiling surface. Moreover, when removing an expansion-contraction rod, the rotation screw part 4 is turned to a reverse direction, the small diameter pipe 2 should just be shortened a little, and the tension state should just be cancelled | released.
[Brief description of the drawings]
FIG. 1 shows an embodiment of a telescopic rod according to the present invention, in which a small-diameter pipe is inserted from below a large-diameter pipe in a state where a large-diameter pipe provided with a length adjusting means exists on the upper side. It is a perspective view which shows a state.
FIG. 2 is an exploded perspective view showing a configuration of a length adjusting means including a joint base, a rotating screw part, and a moving screw part in a state where a large-diameter pipe provided with a length adjusting means exists on the upper side.
FIG. 3 is a side sectional view of the length adjusting means showing a state in which the small diameter pipe is inserted from below the large diameter pipe in a state where the large diameter pipe provided with the length adjusting means exists above.
FIG. 4 shows a process of adjusting the length of the telescopic rod in a state where a large-diameter pipe having a length adjusting means is present on the upper side. FIG. A side view of the state before drawing, (b) is a side view of a state in which a small diameter pipe is pulled out from a large diameter pipe to a predetermined length, and a rough length adjustment is performed, and (c) is a small diameter by turning a rotating screw part. It is a side view which shows the state which performed fine adjustment of the length of an expansion-contraction rod by extending a pipe a little, and fixed the expansion-contraction rod between the floor surface and the ceiling surface in the stretched state.
FIG. 5 shows another embodiment of the telescopic rod according to the present invention. Two telescopic rods are erected at an appropriate interval, and a horizontal arm is installed on both telescopic rods through a predetermined holder. It is a side view which shows the state which carried out.
FIG. 6 is a side view showing another embodiment of the telescopic bar according to the present invention, in which the telescopic bar is arranged in the lateral direction and fixed in a stretched state.
FIG. 7 shows another embodiment of the telescopic rod according to the present invention, in which a small-diameter pipe is inserted from above the large-diameter pipe in the state where the large-diameter pipe provided with the length adjusting means exists below. It is a perspective view which shows the state which carried out.
FIG. 8 is an exploded perspective view showing the configuration of the length adjusting means composed of a joint base, a rotating screw part, and a moving screw part in a state where a large-diameter pipe having a length adjusting means exists below.
FIG. 9 is a side sectional view of the length adjusting means showing a state in which the small diameter pipe is inserted from above the large diameter pipe in a state where the large diameter pipe provided with the length adjusting means exists below.
FIG. 10 shows the process of adjusting the length of the telescopic rod in the state where the large-diameter pipe provided with the length adjusting means is present below, (a) showing the small-diameter pipe upward from the large-diameter pipe. A side view of the state before drawing, (b) is a side view of a state in which a small diameter pipe is pulled out from a large diameter pipe to a predetermined length, and a rough length adjustment is performed, and (c) is a small diameter by turning a rotating screw part. It is a side view which shows the state which performed fine adjustment of the length of an expansion-contraction rod by extending a pipe a little, and fixed the expansion-contraction rod between the floor surface and the ceiling surface in the stretched state.
[Explanation of symbols]
P ... length adjusting means 1 ... large diameter pipe 2 ... small diameter pipe 3 ... joint base 3A ... annular recess 3B ... annular protrusion 4 ... rotating screw part 4A ... annular protrusion 4B ... female screw 5 ... moving screw part 5A ... male Screw 5B ... Locking body 5C ... Screw hole 5D ... Annular projection 6 ... Set screw 7 ... Contact piece 8 ... Holder 9 ... Recumbent

Claims

It consists of a large-diameter pipe and a small-diameter pipe that can be inserted into the large-diameter pipe. At one end of the large-diameter pipe, there is provided a length adjustment means that fixes the small-diameter pipe to the large-diameter pipe in a state of being pulled out to a predetermined length The length adjusting means includes a cylindrical joint base fixed to one end of a large-diameter pipe, a cylindrical shape in which one end side is rotatably attached to the joint base and a female screw is provided on the inner peripheral surface on the other end side. And a cylindrical moving screw part provided on the outer peripheral surface with a male screw threadedly engaged with the female screw of the rotary screw part, and provided with an annular recess having a predetermined width on the lower outer peripheral surface of the joint base. An annular convex portion having a predetermined width is provided on the upper inner peripheral surface of the screw portion, and the rotating screw portion is rotatably attached below the joint base portion by engaging the annular convex portion with the annular concave portion of the joint base portion. A telescopic rod characterized by

The length adjusting means of the large-diameter pipe is provided at a relatively low position within a reachable range when the small-diameter pipe is drawn from the large-diameter pipe and the large-diameter pipe and the small-diameter pipe are arranged in the vertical direction. The telescopic bar described.

The length adjusting means for the large diameter pipe is fixed to the large diameter pipe in a state where the small diameter pipe is pulled out to a predetermined length, and the length of the small diameter pipe can be finely adjusted. rod.

The moving screw portion includes a cylindrical locking barrel portion that holds a set screw that fixes the small-diameter pipe drawn to a predetermined length by being pressed against the outer peripheral surface of the small-diameter pipe to the large-diameter pipe. The telescopic rod according to 1 .

Pull out the small-diameter pipe from the large-diameter pipe to the specified length, and press the set screw held in the locking body of the moving screw part against the outer peripheral surface of the small-diameter pipe to adjust the length of the telescopic rod roughly. After that, the annular convex portion of the predetermined width is engaged with the annular concave portion of the predetermined width of the joint base, and the rotating screw portion and the moving screw portion are rotated by rotating the rotating screw portion that is rotatably attached to the lower portion of the joint base portion. A method for adjusting the length of the telescopic rod, wherein the length of the telescopic rod is finely adjusted by changing the screwing depth.