【０００１】
【発明の属する技術分野】
本発明は、例えば浴室やトイレなどの壁面に固定して使用する手摺りに関する。
詳しくは、金属製のパイプの外周に合成樹脂製の被覆層を被覆し、このパイプの両端に連設された壁取り付け手段により壁面に対して略コの字形に固定される手摺りに関する。
【０００２】
【従来の技術】
従来、この種の手摺りとして、予めチューブ状に形成した内皮層の周面に線材を螺旋状に巻きながら付着させ、その外周に合成樹脂を被覆して線材が樹脂封止された外皮層を形成することにより、三層管構造の合成樹脂チューブが押出し成形され、その後、この三層管構造の合成樹脂チューブの中に空気を注入して内径を大きくし、このチューブの中に金属製のパイプを挿入して一体的に接合させ、全体を所定の長さに切断して握りバーとした後、この握りバーの両端開口に略Ｌ字形のホルダの基端を夫々嵌挿して固定ビスで三者を連結すると共に、両ホルダの先端開口にはプラグをネジ接合し、このプラグにて拘束される固定リングを貫通するビスにより壁に固定されるものがある（例えば、特許文献１参照）。
また、表面に被覆層（被覆部）が被覆された金属製パイプを、プーリ状の曲げ型及び締め付けダイにて保持すると共に、この周りをワイパダイ及びプレッシャダイにて挟み込むように保持し、このような状態において、その一端側から芯金を挿入する共に、他端をチャック６にて保持し、このような状態の上記チャック６側をもって曲げ成形加工をすることにより、パイプの潰れが無く、かつ、被覆層にしわ等の生じない曲げ成形パイプを形成するものがある（例えば、特許文献２参照）。
【０００３】
【特許文献１】
特開平９−２９６５８０号公報（第３頁、図１〜図３）
【特許文献２】
特開平１０−２６７１７４号公報（第１〜２頁、図２、図７）
【０００４】
【発明が解決しようとする課題】
しかし乍ら、このような従来の手摺りでは、特許文献１の場合、金属パイプの両端部に略Ｌ字形のホルダを固定ビスで夫々連結すると共にこれら両ホルダの先端にプラグや固定リングやビスなどからなる壁取り付け手段を取り付ける必要があるため、部品点数が多いばかりでなく、特にＬ字形ホルダのサイズが大きいため、全体の製造コストが高価になるという問題がある。
また、特許文献２の場合には、被覆層が被覆された金属製パイプをダイで保持して曲げ成形加工するが、被覆層は人体の一部を打ち当てたような時に人体への損傷が少なくて安全性を確保できるようにする目的から柔らかな合成樹脂を使用するため、曲げ成形加工の際に被覆層の表面が傷付くなど破損し易く、不良品の発生率が高いという問題がある。
【０００５】
本発明のうち請求項１記載の発明は、部品点数を減らしながら折り曲げに伴う被覆層の破損を防止することを目的としたものである。
請求項２記載の発明は、請求項１に記載の発明の目的に加えて、被覆層と被覆管との繋ぎ目を目立たなくしながら水などの浸入を防止することを目的としたものである。
請求項３記載の発明は、請求項１または２に記載の発明の目的に加えて、壁取り付け手段の連結構造を簡素化することを目的としたものである。
請求項４記載の発明は、請求項３に記載の発明の目的に加えて、手摺りを掴んだ際の握り心地の向上させ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】
前述した目的を達成するために、本発明のうち請求項１記載の発明は、パイプ１の両端部を露出させて折り曲げ、これら折り曲げ部１ａの表面に合成樹脂製の被覆管５を夫々被せて、パイプ１の外周に被覆された被覆層３の両端部３ａと一体化させ、各折り曲げ部１ａの先端開口１ｂには、壁取り付け手段６を連設したことを特徴とするものである。
請求項２記載の発明は、請求項１記載の発明の構成に、前記パイプ１の外周に被覆された被覆層３と、両折り曲げ部１ａの表面に被せられた被覆管５との間に、被覆リング４を夫々嵌挿して、これら被覆層３の両端部３ａ及び両被覆管５の先端部５ａを夫々覆った構成を加えたことを特徴とする。
請求項３記載の発明は、請求項１または２記載の発明の構成に、前記壁取り付け手段６が、壁面Ｃに取り付けられる壁固定板６ａを備え、この壁固定板６ａに形成された筒状部６ａ１を各折り曲げ部１ａの先端開口１ｂに嵌挿して一体的に連結した構成を加えたことを特徴とする。
請求項４記載の発明は、請求項３記載の発明の構成に、前記折り曲げ部１ａの先端開口１ｂと壁固定板６ａの筒状部６ａ１との間に弾性変形可能な緩衝筒７を介装した構成を加えたことを特徴とする。
【０００７】
【作用】
請求項１の発明の作用は、パイプ１の両端部を露出させて折り曲げると、これら折り曲げ部１ａの表面が傷付く可能性があるものの、これに夫々被覆管５を被せることにより、被覆管５で覆われて折り曲げ部１ａの表面が露出しないと共に、各被覆管５とパイプ１の外周に被覆された被覆層３の両端部３ａと一体化して見え、各折り曲げ部１ａの先端開口１ｂに壁取り付け手段６を連設することにより、パイプ１の両端部が壁取り付け手段６を介して直接的に壁面Ｃへ固定されるものである。
請求項２の発明の作用は、請求項１記載の発明の作用に加えて、パイプ１の外周に被覆された被覆層３と、両折り曲げ部１ａの表面に被せられた被覆管５との間に、被覆リング４を夫々嵌挿して、これら被覆層３の両端部３ａ及び両被覆管５の先端部５ａを夫々覆うことにより、被覆層３の両端部３ａと両被覆管５の先端部５ａが覆い被されて露出しない。
請求項３の発明の作用は、請求項１または２記載の発明の作用に加えて、各折り曲げ部１ａの先端開口１ｂに壁固定板６ａの筒状部６ａ１を嵌挿して一体的に連結することにより、パイプ１の両端部が壁固定板６ａを介して壁面Ｃに直接的に固定される。
請求項４の発明の作用は、請求項３記載の発明の作用に加えて、各折り曲げ部１ａの先端開口１ｂと壁固定板６ａの筒状部６ａ１との間に弾性変形可能な緩衝筒７を介装することにより、手摺りを掴んだ際に発生する荷重に伴い緩衝筒７が弾性変形して、壁面Ｃに対し手摺り全体が微動して掴んだ時の衝撃が吸収される。
【０００８】
【発明の実施の形態】
以下、本発明の実施例を図面に基づいて説明する。
この実施例は、図１及び図２に示す如く手摺りＡの握りバーＡ１が、例えばステンレスなどの耐食性に優れた金属材料からなるパイプ１と、このパイプ１の外周面に添装した例えば硬質合成樹脂製の線材か又は合成繊維やモノフィラメントや金属線などからなる線材２と、これらの全面に亘って被覆した例えば弾性変形可能な熱可塑性樹脂などからなる合成樹脂製の被覆層３とで構成され、この線材２による部分的な膨出で被覆層３の表面に滑り止め用の凹凸模様Ｂとして螺旋模様が形成された場合を示すものである。
【０００９】
上記線材２及び被覆層３は、パイプ１の軸方向中央部のみに被覆されて両端部を夫々露出させるか、又はパイプ１の軸方向略全長に亘って被覆された後、その両端部分を切り取ってパイプ１の両端部を夫々露出させ、これら露出したパイプ１の両端部を、従来周知構造の曲げ機械（ｂｅｎｄｉｎｇ ｍａｃｈｉｎｅ， ｂｅｎｄｅｒ）によって夫々略直角に折り曲げ加工して、該パイプ１の全体形状が略コの字形に形成される。
【００１０】
そして、これら両パイプ折り曲げ部１ａ，１ａの表面には、先ず被覆リング４，４を嵌挿して、パイプ１の中央外周に被覆された被覆層３の両端部３ａ，３ａを覆った後に、合成樹脂製の被覆管５，５を嵌挿し、これら被覆管５，５の先端部５ａ，５ａも上記被覆リング４，４で覆うか、或いは図示せぬが被覆リング４，４を嵌挿せずに被覆管５，５のみを夫々被せて、その先端部５ａ，５ａを被覆層３の両端部３ａ，３ａに突き当てることにより、これら両者が一体化するように接続させても良い。
【００１１】
上記被覆リング４は、硬質又は軟質の合成樹脂で内径がパイプ１の外径と略同じか或いはそれより若干大径な環状に成形され、その外周にはパイプ１の外周面と略平行な鍔部４ａ，４ａを反対方向へ夫々突出して、パイプ１の外周面との間に上記被覆層３の端部３ａ及び被覆管５の先端部５ａが嵌入する凹部４ｂ，４ｂを夫々形成している。
【００１２】
上記被覆管５は、図示せる如くパイプ１の中央外周に被覆された被覆層３と同径・同材質で、しかもその表面に形成された滑り止め用凹凸模様Ｂと同じ凹凸模様Ｂ′が成形されたものを使用する方が、これら被覆管５と被覆層３が上記被覆リング４を挟んで並んでも一体感があるため好ましいが、これに限定されず、被覆層３と別な材質であったり、滑り止め用凹凸模様Ｂと異なる凹凸模様を使用しても良い。
【００１３】
更に、前記パイプ折り曲げ部１ａ，１ａの先端開口１ｂ，１ｂには、手摺りＡを壁面Ｃに対して固定するための壁取り付け手段６，６が夫々連設される。
【００１４】
この壁取り付け手段６は、金属などの硬質材料で平板状に形成された壁固定板６ａと、この壁固定板６ａに形成された筒状部６ａ１と、該壁固定板６ａの周縁部６ａ２を壁面Ｃに取り付けるための例えばビスなどの固着手段６ｂと、これら壁固定板６ａ及び固着手段６ｂを覆うカバー６ｃとから構成される。
【００１５】
本実施例では、上記壁固定板６ａが例えばステンレスなどの金属板をプレス成形することにより筒状部６ａ１が一体形成され、この筒状部６ａ１を上記パイプ折り曲げ部１ａの先端開口１ｂに嵌挿して一体的に連結すると共に、これら先端開口１ｂの内周面と筒状部６ａ１の外周面との間には、弾性変形可能な緩衝筒７を介装している。
【００１６】
上記パイプ折り曲げ部１ａの先端開口１ｂと壁固定板６ａの筒状部６ａ１との連結方法としては、パイプ先端開口１ｂ内に緩衝筒７を挟んで筒状部６ａ１が嵌挿された状態で、カシメ加工などにより外側のパイプ先端開口１ｂのみを縮径させて筒状部６ａ１と一体化したり、外側のパイプ先端開口１ｂだけでなく内側の筒状部６ａ１までも縮径させて三者を一体化するか、又は内側の筒状部６ａ１のみを拡径させてパイプ先端開口１ｂと一体化するか、例えばアルゴンアーク溶接などの公知な溶接手段を用いるか、或いは図示せる如く固定ビスや割りピン（スプリングピン）などの固着手段６ｄを貫通させて三者を一体化するなど、種々の方法が考えられる。
【００１７】
図示例では、上記壁固定板６ａを円板状に成形してその周縁部６ａ２に複数の通孔６ａ３…を開穿し、これら通孔６ａ３…に固着手段６ｂとしてビスを挿通し壁面Ｃにねじ込んで固定しているが、上述したパイプ先端開口１ｂと筒状部６ａ１との連結方法と同様に、それ以外固着方法で壁固定板６ａを壁面Ｃに固定しても良い。
【００１８】
上記カバー６ｃは、硬質の合成樹脂などにより前記パイプ折り曲げ部１ａ及び被覆管５が移動自在に挿通する円筒部６ｃ１と、壁固定板６ａの周縁部６ａ２を覆うフランジ部６ｃ２とが一体成形され、前記被覆管５が嵌挿された後に該カバー６ｃを挿通し、各パイプ折り曲げ部１ａに連結した壁固定板６ａが壁面Ｃに固定した後に、該カバー６ｃをスライドして被せるか、或いは予め壁面Ｃに固定した壁固定板６ａと各パイプ折り曲げ部１ａとを固着手段６ｄで連結した後に、該カバー６ｃをスライドして被せる。
【００１９】
この円筒部６ｃ１の内周面は、これと対向する上記被覆管５の表面との隙間を、水分やゴミ浸入防止のために可能な限り小さくする方が好ましいが、該被覆管５の表面に滑り止め用凹凸模様Ｂ′が形成される場合には、図示せる如く凹凸模様Ｂ′を潰して密着させるか、或いは内周面に弾性変形可能な素材（図示せず）を外から目立たないように固着して、凹凸模様Ｂ′に沿って弾性変形させることにより密着させても良い。
【００２０】
上記フランジ部６ｃ２は、カバー６ｃの挿着後に不意な外れを防止するため、壁固定板６ａの周縁部６ａ２と対向する内周面に、例えばネジ部などの相互に着脱自在な係合部６ｃ３を形成することが好ましい。
【００２１】
また、上記緩衝筒７は、例えばゴムなどの弾性体で円筒状に形成され、上述したパイプ折り曲げ部１ａの先端開口１ｂと壁固定板６ａの筒状部６ａ１との連結方法として、カシメ加工などにより緩衝筒７を縮径させる場合には、図２の二点鎖線に示す如く、その縮径を容易にするために軸方向へ全長に亘ってスリット７ａを形成しても良い。
【００２２】
次に、斯かる手摺りＡの作用について説明する。
先ず、パイプ１の露出した両端部を曲げ機械により折り曲げると、これら折り曲げ部１ａ，１ａの表面は曲げ機械との係合により傷付く可能性があるものの、その後、両パイプ折り曲げ部１ａ，１ａに夫々被覆リング４，４を嵌挿してから被覆管５，５を嵌挿するか、或いは被覆リング４，４を嵌挿せずに被覆管５，５のみを被せば、それにより被覆管５，５で覆われて折り曲げ部１ａ，１ａの表面が露出しない。
【００２３】
これと同時に、これら被覆管５，５の先端部５ａ，５ａと、パイプ１の外周に被覆された被覆層３の両端部３ａ，３ａは、被覆リング４，４を挟んで一体化して見える。
また被覆リング４，４を挟まずに被覆管５，５の先端部５ａ，５ａを被覆層３の両端部３ａ，３ａに直接突き当てた場合も同様に、これらが一体化して見える。
【００２４】
その後、両パイプ折り曲げ部１ａ，１ａに壁取り付け手段６，６を連設すれば、それにより、パイプ１の両端部が壁取り付け手段６を介して直接的に壁面Ｃへ固定される。
【００２５】
その結果、部品点数を減らしながら折り曲げに伴う被覆層３，３の破損を防止できる。
特に、被覆リング４，４によって被覆層３の両端部３ａ，３ａと被覆管５，５の先端部５ａ，５ａを夫々覆った場合には、これら両者が覆い被されて露出しないので、被覆層３と被覆管５との繋ぎ目を目立たなくしながら水などの浸入を防止できるという利点がある。
【００２６】
更に本実施例の場合には、両パイプ折り曲げ部１ａ，１ａの先端開口１ｂ，１ｂに、壁固定板６ａ，６ａの筒状部６ａ１，６ａ１を嵌挿して一体的に連結すれば、それにより、パイプ１の両端部が壁固定板６ａ，６ａを介して壁面Ｃに直接的に固定される。
その結果、壁取り付け手段６の連結構造を簡素化できるという利点がある。
【００２７】
また、両パイプ折り曲げ部１ａ，１ａの先端開口１ｂ，１ｂと、壁固定板６ａ，６ａの筒状部６ａ１，６ａ１との間に、弾性変形可能な緩衝筒７，７を介装すれば、それにより、手摺りを掴んだ際に発生する荷重に伴い緩衝筒７，７が弾性変形して、壁面Ｃに対し手摺りＡの全体が微動して掴んだ時の衝撃が吸収される。
その結果、手摺りを掴んだ際の握り心地の向上できるという利点がある。
【００２８】
一方、図３に示すものは、本発明の他の実施例である。
このものは、前記壁取り付け手段６の壁固定板６ａを成形する時点で、その筒状部６ａ１の基端側又は中間位置を縮径させる絞り加工が施され、この縮径部分６ａ１′の外側に緩衝筒７を挟んでパイプ折り曲げ部１ａの先端開口１ｂを嵌挿された後に、カシメ加工などにより外側のパイプ先端開口１ｂ及び緩衝筒７を上記縮径部分６ａ１′沿いに縮径させて三者を一体化した構成が、前記図１及び図２に示した実施例とは異なり、それ以外の構成は図１及び図２に示した実施例と同じものである。
【００２９】
従って、図３に示すものは、予め筒状部６ａ１のみを絞り加工するために深い縮径が可能となるから、カシメ加工で外側のパイプ先端開口１ｂのみを縮径させて一体化する連結方法や、外側のパイプ先端開口１ｂだけでなく内側の筒状部６ａ１までも縮径させて一体化する連結方法に比べ、これらが確実に係合して抜け強度を高くすることができると共に、パイプ折り曲げ部１ａや筒状部６ａ１に孔開け加工も必要ない。
その結果、前記図１及び図２に示した実施例よりも高品質で安価な連結を得られるという利点がある。
【００３０】
尚、前示実施例では、パイプ１の外周面に線材２と合成樹脂製の被覆層３を被覆して、この線材２による部分的な膨出で被覆層３の表面に滑り止め用の凹凸模様Ｂとして螺旋模様を形成したが、これに限定されず、被覆層３の内側に例えば発泡樹脂などの弾性変形可能な合成樹脂層を積層したり、凹凸模様Ｂとして複数本の線材２を交差させて螺旋状に添装することにより格子模様を形成したり、線材２を周方向へ適宜間隔毎に複数本添装するか又は一本のみ添装することにより軸方向へ延びる直線模様を形成するなど、他の構造であっても良い。
【００３１】
【発明の効果】
以上説明したように、本発明のうち請求項１記載の発明は、パイプ１の両端部を露出させて折り曲げると、これら折り曲げ部１ａの表面が傷付く可能性があるものの、これに夫々被覆管５を被せることにより、被覆管５で覆われて折り曲げ部１ａの表面が露出しないと共に、各被覆管５とパイプ１の外周に被覆された被覆層３の両端部３ａと一体化して見え、各折り曲げ部１ａの先端開口１ｂに壁取り付け手段６を連設することにより、パイプ１の両端部が壁取り付け手段６を介して直接的に壁面Ｃへ固定されるので、部品点数を減らしながら折り曲げに伴う被覆層３の破損を防止できる。
従って、金属パイプの両端部に略Ｌ字形のホルダを固定ビスで夫々連結する従来のものに比べ、サイズの大きなＬ字形ホルダが必要ないから部品点数が減って全体の製造コストを低減化できると共に、被覆層が被覆された金属製パイプをダイで保持して曲げ成形加工する従来のものに比べ、被覆層に柔らかな合成樹脂を使用しても傷付かず、不良品の発生率を低減化できる。
【００３２】
請求項２の発明は、請求項１の発明の効果に加えて、パイプ１の外周に被覆された被覆層３と、両折り曲げ部１ａの表面に被せられた被覆管５との間に、被覆リング４を夫々嵌挿して、これら被覆層３の両端部３ａ及び両被覆管５の先端部５ａを夫々覆うことにより、被覆層３の両端部３ａと両被覆管５の先端部５ａが覆い被されて露出しないので、被覆層３と被覆管５との繋ぎ目を目立たなくしながら水などの浸入を防止できる。
【００３３】
請求項３の発明は、請求項１または２の発明の効果に加えて、各折り曲げ部１ａの先端開口１ｂに壁固定板６ａの筒状部６ａ１を嵌挿して一体的に連結することにより、パイプ１の両端部が壁固定板６ａを介して壁面Ｃに直接的に固定されるので、壁取り付け手段６の連結構造を簡素化することができる。
従って、金属パイプの両端部が略Ｌ字形のホルダ及び壁取り付け手段を介して壁面に間接的に固定される従来のものに比べ、取り付け作業が容易である。
【００３４】
請求項４の発明は、請求項３の発明の効果に加えて、各折り曲げ部１ａの先端開口１ｂと壁固定板６ａの筒状部６ａ１との間に弾性変形可能な緩衝筒７を介装することにより、手摺りを掴んだ際に発生する荷重に伴い緩衝筒７が弾性変形して、壁面Ｃに対し手摺り全体が微動して掴んだ時の衝撃が吸収されるので、手摺りを掴んだ際の握り心地の向上させることができる。
【図面の簡単な説明】
【図１】本発明の一実施例を示す手摺りの縦断正面図である。
【図２】分解斜視図である。
【図３】本発明の他の実施例を示す手摺りの部分的な拡大縦断正面図である。
【符号の説明】
Ａ 手摺り Ｃ 壁面
１ パイプ １ａ 折り曲げ部（パイプ折り曲げ部）
１ｂ 先端開口（パイプ先端開口） ３ 被覆層
４ 被覆リング ５ 被覆管
５ａ 先端部 ６ 壁取り付け手段
６ａ 壁固定板 ６ａ１ 筒状部
７ 緩衝筒[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a handrail used by being fixed to a wall surface such as a bathroom or a toilet.
More specifically, the present invention relates to a handrail in which the outer periphery of a metal pipe is coated with a coating layer made of a synthetic resin, and is fixed to the wall surface in a substantially U-shape by wall mounting means connected to both ends of the pipe.
[0002]
[Prior art]
Conventionally, as this kind of handrail, a wire is spirally wound around the inner surface of the endothelial layer formed in a tube shape in advance, and the outer layer is coated with a synthetic resin to cover the outer layer with a resin-sealed outer layer. By forming, a synthetic resin tube having a three-layer tube structure is extruded, and thereafter, air is injected into the synthetic resin tube having the three-layer tube structure to increase the inner diameter, and a metal tube is inserted into the tube. After the pipes are inserted and joined together, the whole is cut to a predetermined length to form a grip bar, and the base ends of the substantially L-shaped holders are respectively inserted into both ends of the grip bar and fixed with screws. While connecting the three members, a plug is screw-joined to the opening at the tip of both holders, and there is one fixed to the wall by a screw penetrating a fixing ring restrained by the plug (for example, see Patent Document 1). .
In addition, a metal pipe having a surface coated with a coating layer (coating portion) is held by a pulley-shaped bending die and a clamping die, and is also held so as to be sandwiched therearound by a wiper die and a pressure die. In this state, the core is inserted from one end and the other end is held by the chuck 6, and the chuck 6 in such a state is bent to form a pipe. There is one that forms a bent pipe without wrinkles or the like in the coating layer (for example, see Patent Document 2).
[0003]
[Patent Document 1]
JP-A-9-296580 (page 3, FIGS. 1 to 3)
[Patent Document 2]
JP-A-10-267174 (pages 1 and 2, FIGS. 2 and 7)
[0004]
[Problems to be solved by the invention]
However, in such a conventional handrail, in the case of Patent Document 1, substantially L-shaped holders are connected to both ends of a metal pipe with fixing screws, respectively, and plugs, fixing rings and screws are attached to the tips of both holders. It is necessary to mount wall mounting means such as the above, so that not only the number of parts is large but also the size of the L-shaped holder is large, so that there is a problem that the whole manufacturing cost becomes expensive.
Further, in the case of Patent Document 2, a metal pipe covered with a coating layer is bent and formed while being held by a die. However, the coating layer causes damage to the human body when a part of the human body is hit. The use of a soft synthetic resin for the purpose of ensuring safety at a low level causes the coating layer surface to be easily damaged, such as being damaged during bending, and has a problem of high incidence of defective products. .
[0005]
It is an object of the present invention to prevent breakage of a coating layer due to bending while reducing the number of parts.
The invention described in claim 2 aims at preventing intrusion of water or the like while making the joint between the coating layer and the coating tube inconspicuous, in addition to the object of the invention described in claim 1.
A third aspect of the present invention is directed to simplifying the connecting structure of the wall mounting means in addition to the object of the first or second aspect of the present invention.
A fourth aspect of the present invention has an object to improve gripping comfort when a handrail is gripped, in addition to the object of the third aspect of the present invention.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the invention according to claim 1 of the present invention comprises exposing both ends of the pipe 1 and bending the pipes 1 and covering the surfaces of the bent portions 1a with covering tubes 5 made of synthetic resin, respectively. In addition, both ends 3a of the coating layer 3 covering the outer periphery of the pipe 1 are integrated with each other, and a wall mounting means 6 is connected to the distal end opening 1b of each bent portion 1a.
According to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, between the covering layer 3 covering the outer periphery of the pipe 1 and the covering tube 5 covering the surfaces of both bent portions 1a. It is characterized in that the coating rings 4 are fitted respectively to cover the both end portions 3a of the coating layer 3 and the tip portions 5a of both the coating tubes 5, respectively.
According to a third aspect of the present invention, in the configuration of the first or second aspect, the wall attaching means 6 includes a wall fixing plate 6a attached to a wall surface C, and a cylindrical shape formed on the wall fixing plate 6a. It is characterized in that a configuration is added in which the portion 6a1 is fitted into the distal end opening 1b of each bent portion 1a and integrally connected.
According to a fourth aspect of the present invention, an elastically deformable buffer cylinder 7 is interposed between the distal end opening 1b of the bent portion 1a and the cylindrical portion 6a1 of the wall fixing plate 6a. It is characterized by adding the above configuration.
[0007]
[Action]
The effect of the invention of claim 1 is that, when the pipes 1 are exposed and bent at both ends, the surfaces of the bent portions 1a may be damaged. And the surface of the bent portion 1a is not exposed, and is also integrated with both end portions 3a of the coating tube 3 and the coating layer 3 coated on the outer periphery of the pipe 1, and the wall is formed at the tip opening 1b of each bent portion 1a. By connecting the mounting means 6 continuously, both ends of the pipe 1 are directly fixed to the wall surface C via the wall mounting means 6.
The operation of the invention of claim 2 is, in addition to the operation of the invention of claim 1, between the coating layer 3 covering the outer periphery of the pipe 1 and the coating tube 5 covering the surfaces of both bent portions 1a. The cover rings 4 are respectively fitted to cover the both end portions 3a of the coating layer 3 and the front end portions 5a of the both coating tubes 5 so as to cover both the end portions 3a of the coating layer 3 and the front end portions 5a of the both coating tubes 5. Is covered and not exposed.
The operation of the third aspect of the present invention is the same as that of the first or second aspect, except that the cylindrical portion 6a1 of the wall fixing plate 6a is fitted and integrally connected to the distal end opening 1b of each bent portion 1a. Thereby, both ends of the pipe 1 are directly fixed to the wall surface C via the wall fixing plate 6a.
The operation of the invention according to claim 4 is, in addition to the operation of the invention according to claim 3, in addition to the operation of the invention described in claim 3, the buffer tube 7 that can be elastically deformed between the distal end opening 1b of each bent portion 1a and the cylindrical portion 6a1 of the wall fixing plate 6a. , The shock-absorbing cylinder 7 is elastically deformed in accordance with the load generated when the handrail is grasped, and the entire handrail is slightly moved with respect to the wall surface C to absorb the impact when the handrail is grasped.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In this embodiment, as shown in FIGS. 1 and 2, a grip bar A1 of a handrail A is made of a pipe 1 made of a metal material having excellent corrosion resistance, such as stainless steel, and a hard bar attached to the outer peripheral surface of the pipe 1, for example. A wire 2 made of a synthetic resin wire or a synthetic fiber, a monofilament, a metal wire, or the like, and a coating layer 3 made of a synthetic resin made of, for example, an elastically deformable thermoplastic resin, which covers the entire surface thereof. This shows a case where a spiral pattern is formed on the surface of the coating layer 3 as a non-slip irregularity pattern B by the partial swelling of the wire 2.
[0009]
The wire 2 and the coating layer 3 are covered only at the central portion in the axial direction of the pipe 1 to expose both ends thereof, or after being covered over substantially the entire length of the pipe 1 in the axial direction, the both ends are cut off. Then, both ends of the pipe 1 are exposed, and both ends of the exposed pipe 1 are bent at substantially right angles by a bending machine (bender) having a conventionally well-known structure, so that the entire shape of the pipe 1 is changed. It is formed in a substantially U-shape.
[0010]
Then, coating rings 4 and 4 are first inserted into the surfaces of the pipe bent portions 1a and 1a to cover both ends 3a and 3a of the coating layer 3 coated on the outer periphery of the center of the pipe 1 and then combined. Resin coating tubes 5 and 5 are inserted and the tip portions 5a and 5a of these coating tubes 5 and 5 are also covered with the coating rings 4 and 4 or not shown but not inserted. By covering only the coating tubes 5, 5, the ends 5 a, 5 a of the coating tubes 3 may be brought into contact with both ends 3 a, 3 a of the coating layer 3, thereby connecting the two together.
[0011]
The coating ring 4 is made of a hard or soft synthetic resin and is formed in an annular shape having an inner diameter substantially equal to or slightly larger than the outer diameter of the pipe 1. The portions 4a, 4a are projected in opposite directions, respectively, and concave portions 4b, 4b into which the end 3a of the coating layer 3 and the tip 5a of the coating tube 5 are fitted are formed with the outer peripheral surface of the pipe 1, respectively. .
[0012]
The coating tube 5 has the same diameter and the same material as the coating layer 3 coated on the outer periphery of the center of the pipe 1 as shown in the figure, and has the same uneven pattern B 'as the anti-slip uneven pattern B formed on the surface thereof. It is preferable to use the coated tube 5 and the coating layer 3 because they have a sense of unity even when the coating tube 5 and the coating layer 3 are arranged with the coating ring 4 interposed therebetween. Alternatively, an uneven pattern different from the anti-slip uneven pattern B may be used.
[0013]
Further, wall mounting means 6, 6 for fixing the handrail A to the wall surface C are connected to the distal end openings 1b, 1b of the pipe bent portions 1a, 1a, respectively.
[0014]
The wall mounting means 6 includes a wall fixing plate 6a formed of a hard material such as a metal in a flat plate shape, a cylindrical portion 6a1 formed on the wall fixing plate 6a, and a peripheral portion 6a2 of the wall fixing plate 6a. It is composed of fixing means 6b such as a screw for attaching to the wall surface C, and a cover 6c covering these wall fixing plate 6a and fixing means 6b.
[0015]
In this embodiment, the wall fixing plate 6a is formed integrally with the tubular portion 6a1 by press-molding a metal plate such as stainless steel, and the tubular portion 6a1 is inserted into the tip opening 1b of the pipe bent portion 1a. In addition, an elastically deformable buffer cylinder 7 is interposed between the inner peripheral surface of the distal end opening 1b and the outer peripheral surface of the cylindrical portion 6a1.
[0016]
As a method of connecting the distal end opening 1b of the pipe bent portion 1a and the cylindrical portion 6a1 of the wall fixing plate 6a, a state in which the cylindrical portion 6a1 is fitted and inserted into the pipe distal end opening 1b with the buffer tube 7 interposed therebetween. Only the outer pipe tip opening 1b is reduced in diameter by caulking or the like to be integrated with the cylindrical portion 6a1, or the inner pipe portion 6a1 as well as the outer pipe tip opening 1b is reduced in diameter to integrate the three members. Or by expanding only the inner cylindrical portion 6a1 to be integrated with the pipe opening 1b, using known welding means such as argon arc welding, or fixing screws or split pins as shown in the figure. Various methods are conceivable, such as integrating the three members by penetrating the fixing means 6d such as a (spring pin).
[0017]
In the illustrated example, the wall fixing plate 6a is formed into a disk shape, a plurality of through holes 6a3 are formed in the peripheral edge 6a2, screws are inserted into these through holes 6a3 as fixing means 6b, and the wall 6 is inserted into the wall C. Although it is screwed and fixed, the wall fixing plate 6a may be fixed to the wall surface C by another fixing method in the same manner as the connection method between the pipe tip opening 1b and the cylindrical portion 6a1 described above.
[0018]
The cover 6c is formed integrally with a cylindrical portion 6c1 through which the pipe bent portion 1a and the covering tube 5 are movably inserted by a hard synthetic resin or the like, and a flange portion 6c2 that covers a peripheral edge 6a2 of the wall fixing plate 6a. After the cover tube 5 is fitted and inserted, the cover 6c is inserted therethrough, and after the wall fixing plate 6a connected to each pipe bent portion 1a is fixed to the wall surface C, the cover 6c is slid or covered in advance. After the wall fixing plate 6a fixed to C is connected to each pipe bent portion 1a by the fixing means 6d, the cover 6c is slid and covered.
[0019]
It is preferable that the inner peripheral surface of the cylindrical portion 6c1 be as small as possible to prevent a gap between the inner peripheral surface of the cylindrical portion 6c1 and the surface of the cladding tube 5 to prevent moisture or dust from entering. When the anti-slip uneven pattern B 'is formed, the uneven pattern B' is crushed and adhered as shown in the figure, or a material (not shown) which can be elastically deformed on the inner peripheral surface is not noticeable from the outside. May be adhered to each other and elastically deformed along the concave-convex pattern B '.
[0020]
The flange portion 6c2 is provided on an inner peripheral surface of the wall fixing plate 6a facing the peripheral edge portion 6a2 so as to prevent accidental detachment after the cover 6c is inserted. Is preferably formed.
[0021]
The cushioning cylinder 7 is formed in a cylindrical shape by an elastic body such as rubber, for example, and a caulking process or the like is used as a method for connecting the tip opening 1b of the pipe bent portion 1a and the cylindrical portion 6a1 of the wall fixing plate 6a. When the diameter of the shock-absorbing cylinder 7 is reduced, the slit 7a may be formed over the entire length in the axial direction to facilitate the diameter reduction as shown by the two-dot chain line in FIG.
[0022]
Next, the operation of the handrail A will be described.
First, when the exposed both ends of the pipe 1 are bent by a bending machine, the surfaces of the bent parts 1a, 1a may be damaged by engagement with the bending machine. If the covering tubes 5 and 5 are fitted after inserting the covering rings 4 and 4 respectively, or if only the covering tubes 5 and 5 are covered without inserting the covering rings 4 and 4, the covering tubes 5 and 5 are thereby inserted. And the surfaces of the bent portions 1a, 1a are not exposed.
[0023]
At the same time, the distal ends 5a, 5a of the coating tubes 5, 5 and both ends 3a, 3a of the coating layer 3 coated on the outer periphery of the pipe 1 appear to be integrated with the coating rings 4, 4 interposed therebetween.
Similarly, when the distal ends 5a, 5a of the coating tubes 5, 5 are directly abutted against the both ends 3a, 3a of the coating layer 3 without sandwiching the coating rings 4, 4, they also appear to be integrated.
[0024]
Thereafter, if wall mounting means 6 and 6 are connected to both pipe bent portions 1a and 1a, both ends of the pipe 1 are directly fixed to the wall surface C via the wall mounting means 6.
[0025]
As a result, it is possible to prevent the coating layers 3 and 3 from being damaged due to bending while reducing the number of parts.
In particular, when the both ends 3a, 3a of the coating layer 3 and the tip portions 5a, 5a of the coating tubes 5, 5 are respectively covered by the coating rings 4, 4, both of them are covered and not exposed. There is an advantage that intrusion of water or the like can be prevented while making the joint between the coating tube 3 and the coating tube 5 inconspicuous.
[0026]
Further, in the case of the present embodiment, the tubular portions 6a1 and 6a1 of the wall fixing plates 6a and 6a are inserted into the tip openings 1b and 1b of the bent portions 1a and 1a of the pipes and integrally connected to each other. Both ends of the pipe 1 are directly fixed to the wall surface C via the wall fixing plates 6a, 6a.
As a result, there is an advantage that the connection structure of the wall mounting means 6 can be simplified.
[0027]
Also, if elastically deformable buffer cylinders 7, 7 are interposed between the distal end openings 1b, 1b of both pipe bent parts 1a, 1a and the cylindrical parts 6a1, 6a1 of the wall fixing plates 6a, 6a, Thereby, the shock absorbers 7, 7 are elastically deformed by the load generated when the handrail is grasped, and the entire handrail A is slightly moved with respect to the wall surface C to absorb the impact when the handrail is grasped.
As a result, there is an advantage that the gripping feeling when the handrail is grasped can be improved.
[0028]
On the other hand, FIG. 3 shows another embodiment of the present invention.
At the time when the wall fixing plate 6a of the wall mounting means 6 is formed, a drawing process for reducing the diameter of the base end side or the intermediate position of the cylindrical portion 6a1 is performed, and the outside of the reduced diameter portion 6a1 '. After the tip opening 1b of the pipe bent portion 1a is inserted with the buffer cylinder 7 interposed therebetween, the outer pipe tip opening 1b and the buffer cylinder 7 are reduced in diameter along the reduced diameter portion 6a1 'by caulking or the like to reduce the diameter. 1 and 2 is different from the embodiment shown in FIG. 1 and FIG. 2, and the other configuration is the same as the embodiment shown in FIG. 1 and FIG.
[0029]
Therefore, the one shown in FIG. 3 can be deeply reduced because only the cylindrical portion 6a1 is previously drawn, so that only the outer pipe tip opening 1b is reduced by crimping and integrated. In addition, compared to the connection method in which not only the outer pipe tip opening 1b but also the inner cylindrical portion 6a1 is reduced in diameter and integrated, these can be reliably engaged to increase the pull-out strength, and There is no need to make a hole in the bent portion 1a or the cylindrical portion 6a1.
As a result, there is an advantage that a higher quality and cheaper connection can be obtained as compared with the embodiment shown in FIGS.
[0030]
In the above-described embodiment, the outer peripheral surface of the pipe 1 is covered with a wire 2 and a coating layer 3 made of synthetic resin, and the surface of the coating layer 3 is partially swelled by the wire 2 to prevent unevenness for preventing slip. Although the spiral pattern is formed as the pattern B, the present invention is not limited to this. For example, an elastically deformable synthetic resin layer such as a foamed resin may be laminated inside the coating layer 3 or a plurality of wires 2 may be crossed as the uneven pattern B. A spiral pattern is formed to form a lattice pattern, a linear pattern extending in the axial direction is formed by inserting a plurality of wires 2 at appropriate intervals in the circumferential direction, or by inserting only one wire 2 in the circumferential direction. Other structures may be used.
[0031]
【The invention's effect】
As described above, according to the first aspect of the present invention, when the both ends of the pipe 1 are exposed and bent, the surfaces of the bent portions 1a may be damaged. 5, the surface of the bent portion 1a is not exposed by being covered with the cladding tube 5, and also appears integrally with both ends 3a of the cladding layer 3 which is coated on the outer periphery of each cladding tube 5 and the pipe 1. By connecting the wall mounting means 6 to the front end opening 1b of the bent portion 1a, both ends of the pipe 1 are directly fixed to the wall C via the wall mounting means 6, so that the pipe can be bent while reducing the number of parts. The accompanying damage of the coating layer 3 can be prevented.
Therefore, compared to the conventional one in which substantially L-shaped holders are connected to both ends of the metal pipe with fixing screws, a large-sized L-shaped holder is not required, so that the number of parts is reduced and the overall manufacturing cost can be reduced. Compared with conventional pipes that use a die to hold a metal pipe covered with a coating layer and bend it, even if a soft synthetic resin is used for the coating layer, it is not damaged and the incidence of defective products is reduced. it can.
[0032]
In addition to the effect of the first aspect of the present invention, a second aspect of the present invention provides a coating between the coating layer 3 covering the outer periphery of the pipe 1 and the coating tube 5 covering the surfaces of both the bent portions 1a. The ends 4a of the coating layer 3 and the tips 5a of the two coating tubes 5 are covered by covering the both ends 3a of the coating layer 3 and the tips 5a of both the coating tubes 5 by fitting the rings 4 respectively. Since it is not exposed because it is exposed, it is possible to prevent intrusion of water or the like while making the joint between the coating layer 3 and the coating tube 5 inconspicuous.
[0033]
According to the third aspect of the present invention, in addition to the effects of the first or second aspect, by inserting the cylindrical portion 6a1 of the wall fixing plate 6a into the distal end opening 1b of each bent portion 1a and integrally connecting them, Since both ends of the pipe 1 are directly fixed to the wall surface C via the wall fixing plate 6a, the connection structure of the wall mounting means 6 can be simplified.
Therefore, the mounting operation is easier than the conventional one in which both ends of the metal pipe are indirectly fixed to the wall surface via the substantially L-shaped holder and the wall mounting means.
[0034]
According to a fourth aspect of the present invention, in addition to the effect of the third aspect, an elastically deformable buffer cylinder 7 is interposed between the distal end opening 1b of each bent portion 1a and the cylindrical portion 6a1 of the wall fixing plate 6a. By doing so, the shock-absorbing cylinder 7 is elastically deformed in accordance with the load generated when the handrail is grasped, and the entire handrail is slightly moved with respect to the wall surface C to absorb the impact when the handrail is grasped. The grip feeling when grasping can be improved.
[Brief description of the drawings]
FIG. 1 is a vertical sectional front view of a handrail according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view.
FIG. 3 is a partially enlarged longitudinal sectional front view of a handrail showing another embodiment of the present invention.
[Explanation of symbols]
A Handrail C Wall 1 Pipe 1a Bend (pipe bent)
1b Tip opening (pipe opening) 3 Coating layer 4 Coating ring 5 Coating tube 5a Tip 6 Wall mounting means 6a Wall fixing plate 6a1 Tubular part 7 Buffer cylinder
