JP3896291B2

JP3896291B2 - Workbench with handrail

Info

Publication number: JP3896291B2
Application number: JP2002032713A
Authority: JP
Inventors: 豊治千田; 許弘中尾
Original assignee: ジーオーピー株式会社; 株式会社ナカオ
Priority date: 2002-02-08
Filing date: 2002-02-08
Publication date: 2007-03-22
Anticipated expiration: 2022-02-08
Also published as: JP2003239526A

Description

【０００１】
【発明の属する技術分野】
本発明は、建築工事現場、建築物の天井や壁面などの内外装作業、電気配線作業などの高所作業に使用する手摺付作業台に関するものである。
【０００２】
【従来の技術】
手摺付作業台には、上部に手摺支柱を延設した一対の支柱脚間に複数の踏桟を適宜間隔で取り付けて梯子枠を形成し、該梯子枠の一対を対向させ上端を相互に回動自在に軸着し、支柱脚の上部位置で梯子枠間に踏板ユニットを折り畳み自在に架け渡し、手摺支柱の上部に、一対の梯子枠のそれぞれの外方に向けて略水平方向に突出する手摺枠を折り畳み自在に取り付けたものがある。
【０００３】
これは、例えば、出願人が特願２００１−２６２７２９として先に提案した図１０に示すように、一対の梯子枠３と、該梯子枠３間に折り畳み自在に架け渡した踏板ユニット６と、一対の梯子枠１の上部に折り畳み自在にそれぞれ取り付けた手摺枠８、９とで手摺付作業台５を構成する。
【０００４】
梯子枠３は、一対の支柱脚１、１の間に適宜間隔（図示の例では高さ方向に約300 ｍｍ間隔）で複数本（図示の例では７本）の踏桟２を架け渡し、支柱脚１の上端から手摺支柱４を上方に向けて延設したもので、支柱脚１、手摺支柱４ともに材質としては例えばアルミニウム合金を使用し、断面コ字形に形成した。
【０００５】
支柱脚１は上部主脚１ａと下部主脚１ｂに分割し、上部主脚１ａの下端と下部主脚１ｂの上端とを連結金具10で回動自在に連結し、下部主脚１ｂを上部主脚１ａに対して上方に回動自在に組み合わせた。
【０００６】
そして、踏桟２の長さは、下部主脚１ｂでは上段のものになるにしたがい短いものとして、支柱脚１、１の間隔が上方にいくにしたがい狭くなるように形成する。
【０００７】
支柱脚１の上端部に位置させて、対向する支柱脚１、１の間に踏板ユニット６を回動自在に取り付ける。該踏板ユニット６は、平板状の踏板６ａと、該踏板６ａを下方から支承するステイ６ｂとで構成し、ステイ６ｂは一端を踏板６ａの下部のほぼ中央位置に回動自在に軸着し、他端を支柱脚１の上端部または手摺支柱４の下端部、または支柱脚１と手摺支柱４との境界部に取付金具で回動自在に軸着する。
【０００８】
踏板６ａは、ステイ６ｂが重合されない側の端部を、取付金具で支柱脚１の上端部または手摺支柱４の下端部、または支柱脚１と手摺支柱４との境界部に回動自在に軸着する。
【０００９】
手摺支柱４、４の上端部は突き合わせて、矩形状の回転金具11で回動自在に結合する。図中14は支柱脚１の下部に伸長自在に取り付けた延長脚を示す。
【００１０】
梯子枠３の上部の手摺支柱４に取り付ける手摺枠８、９は、手摺支柱４の途中に基端が上下に回動自在に軸着するステイ13と、該ステイ13の先端に回動自在に組み合わさり開口端部が手摺支柱４の上端に着脱自在に係止する手摺枠本体12とで構成し、アルミニウム合金などを用い、手摺枠本体12は円筒の中空に形成した型材を平面コ字形に形成した。
【００１１】
図１１、図１２は手摺付作業台５を折り畳んだ収納状態であり、この状態では、下部主脚１ｂが連結金具10を介して上方に折り畳まれて上部主脚１ａおよび手摺支柱４と重合している。また、踏板ユニット６は、ステイ６ｂと踏板６ａとが、その軸着による連結部が上方に移動することでステイ６ｂと踏板６ａとがそれぞれ梯子枠３との軸着部を中心にして上方に回動し、対向する梯子枠３の間にこれと平行に折り畳まれる。
【００１２】
手摺付作業台５を使用するには、このように偏平かつ短尺に折り畳まれた状態で、手摺付作業台５を使用現場に搬入して使用するには、下部主脚１ｂを連結金具10を介して下方に回動し、上部主脚１ａと１本になる状態として、一対の梯子枠３、３を上部の回転金具11の部分を軸としてハの字形に開く。この状態で踏板ユニット６は手摺付作業台５の開脚に連動して踏板６ａとステイ６ｂとが水平状態となる。
【００１３】
また、手摺枠８、９についてもステイ１３と手摺枠本体１２が平行に折り畳まれて手摺支柱４の内側に納まった状態から、踏板６ａの上に立って手摺枠本体１２を水平位置まで引き上げて手摺支柱４間の前方と後方とにセットする。そして、手摺支柱４および手摺枠８、９とで囲まれた空間内の踏板６ａの上で作業する。
【００１４】
【発明が解決しようとする課題】
踏板６ａ上に立って作業する際、踏板６ａは前記のように平板であり上面が平面であるため、作業中に誤って手から踏板６ａの上に落とした工具や材料などがそのまま踏板６ａから下方に落下したり、踏板６ａの上に一時的に置いておいた工具や材料などを足で蹴飛ばすなどして下方に落下させるおそれがあり、かかる場合、作業台の下方にいる別の作業者に怪我をさせるおそれがあって危険である。
【００１５】
また、踏板６ａの側方、すなわち手摺枠８、９が取り付けられていない側は、手摺支柱４が三角形状に存することになり、作業者はこの側からは手摺支柱４によって落下しにくい構造になっているが、踏板６ａ上で足を滑らせるなどすると、この手摺支柱４により形成されている狭い三角形状の隙間に体が滑り込み、その勢いで手摺付作業台５そのものが転倒するおそれも生じて危険である。
【００１６】
本発明の目的は前記従来例の不都合を解消し、踏板上から工具や材料などが滑って落下することを防止し、また作業者が踏板上で、手摺枠が取り付けられていない側から足を滑らせるなどしても、手摺支柱により形成されている狭い三角形状の隙間に体が滑り込みことを防止するとともに、手摺付作業台そのものの転倒を防止して安全性を向上でき、しかもそのために手摺付作業台の折り畳みに支障が生じることもなく特に使い勝手が悪くなることもない手摺付作業台を提供することにある。
【００１７】
【課題を解決するための手段】
本発明は前記目的を達成するため、第１に、上部に手摺支柱を延設した一対の支柱脚間に複数の踏桟を適宜間隔で取り付けて梯子枠を形成し、該梯子枠の一対を対向させ上端を相互に回動自在に軸着し、支柱脚の上部位置で梯子枠間に踏板ユニットを折り畳み自在に架け渡し、手摺支柱の上部に、一対の梯子枠のそれぞれの外方に向けて略水平方向に突出する手摺枠を折り畳み自在に取り付けた手摺付作業台において、踏板の側縁に幅木を配置し、該幅木の端を支柱脚に固定することを要旨とするものである。
【００１８】
第２に、幅木は板状部材で形成し、該板状部材の下端を踏板の側部上端に回動自在に軸着し、板状部材の端に係止部材を取り付けるとともに支柱脚の内側に係止受け部材を取り付け、該係止受け部材に前記係止部材を着脱自在に係止して板状部材を支柱脚に固定することを要旨とするものである。
【００１９】
第３に、幅木は伸縮性を有する可撓性部材で形成し、両端を支柱脚に固定したことを要旨とするものである。
【００２０】
第４に、幅木は対向する一対の梯子枠間に位置させて支柱脚に固定することを要旨とするものである。
【００２１】
請求項１記載の本発明によれば、踏板の側縁に幅木を設けることで、踏板の側部に幅木が立ち上がった状態になるから、踏板の上面が平面であっても幅木に阻止されて踏板上から工具や材料などが落下することを防止できる。また、作業者も踏板上で足を滑らせても、幅木に阻止されてそのまま落下することはない。
【００２２】
さらに、幅木の端は支柱脚に固定したから、折り畳み自在に架け渡した踏板ユニットの踏板が、踏桟の昇降時などに生じる力などの外力によって浮き上がろうとしても、幅木によって浮き上がりを防止できる。
【００２３】
請求項２記載の本発明によれば、前記作用に加えて、支柱脚をハ字形に開いて踏板を水平にセットした状態で、幅木を軸着部を中心にして上方に回動すれば踏板の側部に立ち上がる。そして、この状態で幅木に取り付けてある係止部材を支柱脚に取り付けてある係止受け部材に係止すれば、幅木の端が支柱脚に固定され、幅木は所定位置に係止され転倒することはない。また、幅木の支柱脚への固定により、幅木を介して踏板の浮き上がりも阻止される。
【００２４】
踏板を折り畳むときは、係止部材と係止受け部材との係止を解除し、軸着部を中心にして幅木を踏板の方向に回動し踏板の上に倒せば、踏板上に折り畳まれる。
【００２５】
請求項３記載の本発明によれば、幅木は伸縮性を有する可撓性部材で形成したから、手摺付作業台を折り畳むときは、作業台を折り畳めば踏板と支柱脚との間の空間にそのままくしゃくしゃとなった状態で折り込まれる。使用時に手摺付作業台の支柱脚をハ字形に開いたときは、幅木は両端が支柱脚に固定してあるから支柱脚の開脚に追随してそのまま横に展開し、踏板の側部に自動的に立ち上がる。この状態で幅木は伸縮性を有しているから、踏板の側部にピンと張設される。
【００２６】
請求項４記載の本発明によれば、前記作用に加えて、幅木は対向する一対の梯子枠間にのみ配設したから、手摺枠が存在せず踏板上から落下しやすい方向に幅木が存在することになり、作業者の安全を確保できる。また、踏桟を設けた側の踏板には幅木が存在しないことになるから、踏桟から踏板に移るときに幅木が邪魔になることもない。
【００２７】
【発明の実施の形態】
以下、図面について本発明の実施の形態を詳細に説明する。図１は、本発明の手摺付作業台の実施の形態を示す全体斜視図、図２は同上要部の側面図、図３は同上正面図、図４は同上要部の正面図、図５は同上要部の横断平面図で、手摺付作業台の基本構造は図10〜図12に示した従来例と基本的には同様であり、従来例と同一の構成要素には同一の参照符号を付してある。
【００２８】
本発明の手摺付作業台５も、一対の梯子枠３と、該梯子枠３間に折り畳み自在に架け渡した踏板ユニット６と、一対の梯子枠３の上部に折り畳み自在にそれぞれ取り付けた手摺枠８、９とで構成する。
【００２９】
梯子枠３は、一対の支柱脚１、１の間に適宜間隔（図示の例では高さ方向に約300 ｍｍ間隔）で複数本（図示の例では７本）の踏桟２を架け渡し、支柱脚１の上端から手摺支柱４を上方に向けて延設したもので、支柱脚１、手摺支柱４ともに材質としては例えばアルミニウム合金を使用し、断面コ字形に形成した。
【００３０】
支柱脚１は本実施形態では上部主脚１ａと下部主脚１ｂに分割し、上部主脚１ａの下端と下部主脚１ｂの上端とを連結金具10で回動自在に連結し、下部主脚１ｂを上部主脚１ａに対して上方に回動自在に組み合わせた。
【００３１】
そして、踏桟２の長さは、下部主脚１ｂでは上段のものになるにしたがい短いものとして、支柱脚１、１の間隔が上方にいくにしたがい狭くなるように形成する。
【００３２】
支柱脚１の上端部に位置させて、対向する支柱脚１，１の間に踏板ユニット６を回動自在に取り付ける。該踏板ユニット６は、踏板６ａと、該踏板６ａを下方から支承するステイ６ｂとで構成し、ステイ６ｂは一端を踏板６ａの下部のほぼ中央位置に回動自在に軸着し、他端を支柱脚１の上端部または手摺支柱４の下端部、または支柱脚１と手摺支柱４との境界部に取付金具で回動自在に軸着する。
【００３３】
踏板６ａは、ステイ６ｂが重合されない側の端部を、取付金具で支柱脚１の上端部または手摺支柱４の下端部、または支柱脚１と手摺支柱４との境界部に回動自在に軸着する。
【００３４】
手摺支柱４、４の上端部は突き合わせて、矩形状の回転金具11で回動自在に結合する。図中14は支柱脚１の下部に伸長自在に取り付けた延長脚を示す。
【００３５】
梯子枠３の上部の手摺支柱４に取り付ける手摺枠８、９は、手摺支柱４の途中に基端が上下に回動自在に軸着するステイ13と、該ステイ13の先端に回動自在に組み合わさり開口端部が手摺支柱４の上端に着脱自在に係止する手摺枠本体12とで構成し、アルミニウム合金などを用い、手摺枠本体12は円筒の中空に形成した型材を平面コ字形に形成した。
【００３６】
かかる構成の手摺付作業台５において、踏板６ａの側縁に幅木15を取り付ける。図２〜図７は第１実施形態を示し、材質として例えば、アルミニウム、アルミニウム合金、鉄、ステンレス、合成樹脂、木材などの剛性を有するを用いて横細長形状の板状部材で形成し、下端部を踏板６ａの側部上縁に蝶番などの取付金具16で回動自在に軸着した。
【００３７】
幅木15は、図２、図４、図５に示すように側面略ク字形に形成し、下部の傾斜部15ａと上部の垂直部15ｂは踏板６ａと同じ幅に形成し、垂直部15ａの先端から外方に向けて水平に折れ曲がる水平部15ｃを形成し、この水平部15ｃは支柱脚１にぶつからないように支柱脚１の幅分だけ短く形成した。
【００３８】
前記幅木15の垂直部15ｂの外側に支柱脚１との係止部材として図６、図７にも示すようにローラ17を突設する。一方、断面コ字形の支柱脚１の内側に係止受け部材として前記ローラ17が係止するローラキャッチ18を取り付ける。該ローラキャッチ18は対向方向に付勢された開閉自在な一対のローラで構成する。このローラ17とローラキャッチ18による固定部材は、幅木15の両端に取り付けることも可能であるが、図示のように一方の端部にのみ取り付けても係止可能である。
【００３９】
次に使用法について説明する。図11、図12は手摺付作業台５を折り畳んだ収納状態であり、この状態では、下部主脚１ｂが連結金具10を介して上方に折り畳まれて上部主脚１ａおよび手摺支柱４と重合している。また、踏板ユニット６は、ステイ６ｂと踏板６ａとが、その軸着による連結部が上方に移動することでステイ６ｂと踏板６ａとがそれぞれ梯子枠３との軸着部を中心にして上方に回動し、対向する梯子枠３の間にこれと平行に折り畳まれる。
【００４０】
幅木15は、図４の鎖線で示すように取付金具16を軸として全体が踏板６ａの上に重合する状態で折り畳まれている。この状態でローラキャッチ18は断面コ字形の支柱脚１の内側に配置してあるから、外方に突出することがなく、他物とぶつかって損壊するおそれがなく、また、折り畳みに支障もない。
【００４１】
手摺枠８、９についても、ステイ13を手摺支柱４との回動軸着部を中心にして下方に回動することで、ステイ13に回動自在に連結した手摺枠本体12を下方に回動する。これにより、ステイ13と手摺枠本体12は平行に折り畳まれた状態で手摺支柱４の内側に納まる。この状態で踏板６ａは手摺枠８、９の内側に納まる。
【００４２】
このように偏平かつ短尺に折り畳まれた状態で、手摺付作業台５を使用現場に搬入して使用するには、下部主脚１ｂを連結金具10を介して下方に回動し、上部主脚１ａと１本になる状態として、一対の梯子枠３、３を上部の回転金具11の部分を軸としてハの字形に開く。この状態で踏板ユニット６は手摺付作業台５の開脚に連動して踏板６ａとステイ６ｂとが水平状態となる。
【００４３】
この状態では幅木15は踏板６ａの上に折り畳まれて水平状態にある。幅木15を踏板６ａの側部に垂直に立てるには、踏桟２を上り、取付金具16の箇所を中心軸にして幅木15を立て、ローラ17を一対のローラで構成するローラキャッチ18に差し込んで幅木15を支柱脚１に固定する。
【００４４】
手摺枠８、９を水平にセットするには、同じく踏桟２を上った状態で、踏板６ａの上に立って、下方に垂下している手摺枠本体12を引き上げる。これにより、ステイ13が手摺支柱４との回動軸着部を中心にして回動し、ステイ13が上方に回動しながら引き上げられるから、ステイ13と手摺枠本体12との回動軸着部が手摺支柱４の上端とほぼ水平に位置まで引き上げられたならば、手摺枠本体12を手摺支柱４に係止する。
【００４５】
両方の手摺枠８、９ともに同じ操作で手摺支柱４の両側に開くから、この状態で踏板６ａ上で作業する。作業する間、幅木15が踏板６ａの側部に立ち上がっているから、踏板６ａの上面が平面であっても幅木15に阻止されて踏板６ａ上から工具や材料などが落下することを防止できる。また、作業者も踏板６ａ上で足を滑らせても、幅木15に阻止されてそのまま支柱脚２により側方に形成されている狭い三角形状の隙間から落下することはない。
【００４６】
さらに、幅木15の両端は支柱脚１に固定したから、折り畳み自在に架け渡した踏板ユニット６の踏板６ａが、踏桟２の昇降時などに生じる力などの外力によって浮き上がろうとしても、幅木15によって浮き上がりを阻止できる。
【００４７】
図８、図９は幅木15の第２実施形態を示し、幅木15の本体の材質を伸縮性を有する可撓性部材として、例えば軟質ゴム、軟質合成樹脂などとし、その両端を支柱脚１にボルト、リベット、接着剤などで固定し、幅木15の下端を踏板６ａに当接させた。
【００４８】
幅木15の下端は端縁をそのまま踏板６ａに当接させてもよいが、踏板６ａが支柱脚１に対して回転自在な構造のため、踏板６ａと支柱脚１との間に少し隙間が生じることに対処してこの隙間から工具などが落下しないようするには、図９に示すように幅木15の下端部を踏板６ａの方向に直角に折り曲げて、端部が踏板６ａの上に載るようにしてもよい。
【００４９】
なお、幅木15は踏板６ａを展開した状態では左右両端がボルトなどで支柱脚１に固定されていることから、水平方向に引っ張られて伸長するが、伸長状態で約100 ｍｍの幅（高さ）を有するようにしておくとよい。
【００５０】
この第２実施形態の幅木15は、手摺付作業台５を折り畳むときは、対向する梯子枠３を引き寄せて踏板６ａを折り畳めば、踏板６ａと支柱脚１との間の空間にそのままくしゃくしゃとなった状態で折り込まれる。使用時に手摺付作業台５の支柱脚１をハ字形に開いたときは、幅木15は両端が支柱脚１に固定してあるから支柱脚１の開脚に追随してそのまま横に展開し、踏板６ａの側部に自動的に立ち上がる。この状態で幅木15は伸縮性を有しているから、踏板６ａの側部にピンと張設される。
【００５１】
【発明の効果】
以上述べたように本発明の手摺付作業台は、踏板上から工具や材料などが滑って落下することを防止し、また作業者が踏板上で、手摺枠が取り付けられていない側から足を滑らせるなどしても、手摺支柱により形成されている狭い三角形状の隙間に体が滑り込みことを防止するとともに、作業者の落下に追随して手摺付作業台そのものが転倒することも防止して安全性を向上でき、しかもそのために手摺付作業台の折り畳みに支障が生じることもなく特に使い勝手が悪くなることもないものである。
【図面の簡単な説明】
【図１】本発明の手摺付作業台の第１実施形態を示す全体斜視図である。
【図２】本発明の手摺付作業台の第１実施形態を示す要部の側面図である。
【図３】本発明の手摺付作業台の第１実施形態を示す正面図である。
【図４】本発明の手摺付作業台の第１実施形態を示す要部の正面図である。
【図５】本発明の手摺付作業台の第１実施形態を示す要部の横断平面図である。
【図６】本発明の手摺付作業台の第１実施形態を示す要部である固定部の解除状態の正面図である。
【図７】本発明の手摺付作業台の第１実施形態を示す要部である固定部の係止状態の正面図である。
【図８】本発明の手摺付作業台の第２実施形態を示す要部の側面図である。
【図９】本発明の手摺付作業台の第２実施形態を示す要部の正面図である。
【図１０】手摺付作業台の従来例を示す斜視図である。
【図１１】手摺付作業台の従来例を示す折り畳んだ状態の側面図である。
【図１２】手摺付作業台の従来例を示す折り畳んだ状態の正面図である。
【符号の説明】
１…支柱脚２…踏桟
１ａ…上部主脚１ｂ…下部主脚
３…梯子枠４…手摺支柱
５…手摺付作業台６…踏板ユニット
６ａ…踏板６ｂ…ステイ
８…手摺枠９…手摺枠
10…連結金具 11…回転金具
12…手摺枠本体 13…ステイ
14…延長脚 15…幅木
15ａ…傾斜部 15ｂ…垂直部
15ｃ…水平部 16…取付金具
17…ローラ 18…ローラキャッチ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a work table with a handrail used for construction work sites, interior / exterior work such as ceilings and wall surfaces of buildings, and high work such as electrical wiring work.
[0002]
[Prior art]
A platform with handrails has a ladder frame formed by attaching a plurality of steps at appropriate intervals between a pair of strut legs with handrail struts extended on the top, and the top ends of the ladder frames are opposed to each other with the pair of ladder frames facing each other. It is pivotally mounted, and the tread board unit is folded between the ladder frames at the upper position of the column legs so as to be foldable, and protrudes substantially horizontally toward the outside of the pair of ladder frames at the upper part of the handrail column. There is a handrail frame that is foldable.
[0003]
For example, as shown in FIG. 10 previously proposed by the applicant as Japanese Patent Application No. 2001-262729, a pair of ladder frames 3, a step board unit 6 foldably laid between the ladder frames 3, and a pair of ladder frames 3 are provided. A handrail-equipped work table 5 is constituted by handrail frames 8 and 9 that are foldably attached to the upper portion of the ladder frame 1.
[0004]
The ladder frame 3 spans a plurality of (seven in the illustrated example) traversing bridges 2 at appropriate intervals (in the illustrated example, approximately 300 mm in the height direction) between the pair of support legs 1 and 1. The handrail support 4 is extended upward from the upper end of the support leg 1, and both the support leg 1 and the handrail support 4 are made of, for example, an aluminum alloy and formed in a U-shaped cross section.
[0005]
The support leg 1 is divided into an upper main leg 1a and a lower main leg 1b, and a lower end of the upper main leg 1a and an upper end of the lower main leg 1b are rotatably connected by a connecting bracket 10, and the lower main leg 1b is connected to the upper main leg 1b. The legs 1a are combined so as to be rotatable upward.
[0006]
Then, the length of the traverse 2 is set to be shorter as the lower main leg 1b becomes the upper one, and is formed so that the interval between the support legs 1 and 1 becomes narrower as it goes upward.
[0007]
The tread board unit 6 is rotatably mounted between the opposing support legs 1 and 1 at the upper end of the support legs 1. The tread board unit 6 includes a flat tread board 6a and a stay 6b that supports the tread board 6a from below. The stay 6b is pivotally attached at one end to a substantially central position below the tread board 6a. The other end is pivotally attached to the upper end of the support leg 1 or the lower end of the handrail support 4 or the boundary between the support leg 1 and the handrail support 4 with a mounting bracket.
[0008]
The tread board 6a is pivotally pivoted at the end where the stay 6b is not overlapped to the upper end of the support leg 1 or the lower end of the handrail support 4 or the boundary between the support leg 1 and the handrail support 4 with a mounting bracket. To wear.
[0009]
The upper end portions of the handrail support columns 4 and 4 are brought into contact with each other, and are coupled by a rectangular rotating metal fitting 11 so as to be rotatable. In the figure, reference numeral 14 denotes an extension leg attached to the lower part of the support leg 1 so as to be freely extendable.
[0010]
The handrail frames 8 and 9 attached to the handrail strut 4 at the top of the ladder frame 3 are a stay 13 whose base end is pivotably mounted in the middle of the handrail strut 4 and a pivot 13 at the tip of the stay 13. The combined opening end portion is composed of a handrail frame main body 12 that is detachably locked to the upper end of the handrail support column 4, and an aluminum alloy or the like is used, and the handrail frame main body 12 is formed in a cylindrical hollow mold. Formed.
[0011]
11 and 12 show the storage state in which the handrail-equipped worktable 5 is folded, and in this state, the lower main leg 1b is folded upward via the connecting bracket 10 and overlaps with the upper main leg 1a and the handrail support column 4. ing. Further, the tread unit 6 has a stay 6b and a tread plate 6a that are connected to each other so that the stay 6b and the tread plate 6a are moved upwards with respect to the pivoted portion of the ladder frame 3, respectively. It rotates and is folded between the opposing ladder frames 3 in parallel therewith.
[0012]
In order to use the handrail-equipped worktable 5, the lower main leg 1 b is connected to the connecting bracket 10 in order to carry the handrail-equipped worktable 5 into the use site in a state where the worktable with handrail 5 is folded flat and short. The pair of ladder frames 3 and 3 are opened in a square shape with the upper rotating metal fitting 11 as an axis. In this state, in the tread unit 6, the tread plate 6a and the stay 6b are in a horizontal state in conjunction with the open leg of the handrail-equipped work table 5.
[0013]
As for the handrail frames 8 and 9, the stay 13 and the handrail frame main body 12 are folded in parallel and stored inside the handrail support column 4, and then the handrail frame main body 12 is pulled up to the horizontal position while standing on the step board 6a. Set between the front and back of the handrail column 4. And it works on the tread 6a in the space enclosed by the handrail support | pillar 4 and the handrail frames 8 and 9. FIG.
[0014]
[Problems to be solved by the invention]
When working while standing on the tread 6a, the tread 6a is a flat plate and has a flat upper surface as described above. Therefore, tools, materials, etc. that have been accidentally dropped on the tread 6a from the hand during the work are directly removed from the tread 6a. There is a risk of falling down or dropping the tool or material temporarily placed on the tread board 6a with a foot or the like. In such a case, another worker below the workbench It is dangerous because it may cause injury.
[0015]
In addition, the side of the tread 6a, that is, the side where the handrail frames 8 and 9 are not attached, has the handrail support column 4 in a triangular shape, so that the operator cannot easily fall from the handrail support column 4 from this side. However, if the foot is slid on the tread 6a, the body slides into the narrow triangular gap formed by the handrail support column 4, and the handrail-equipped work table 5 itself may fall over due to the momentum. And dangerous.
[0016]
The object of the present invention is to eliminate the inconveniences of the conventional examples, prevent tools and materials from slipping and falling from the tread, and the operator can put his feet on the tread on the side where the handrail frame is not attached. Even if it is slid, the body can be prevented from slipping into the narrow triangular gap formed by the handrail struts, and the safety of the handrail-equipped work table itself can be prevented from falling and the safety can be improved. An object of the present invention is to provide a handrail-equipped workbench that does not hinder the folding of the workbench with a handrail and that is not particularly unusable.
[0017]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, first, a ladder frame is formed by attaching a plurality of step bars at appropriate intervals between a pair of column legs each having a handrail column extending thereon, and a pair of the ladder frames is formed. Opposite and pivot on top of each other so that they can be pivoted to each other, and the treadle unit is foldable between the ladder frames at the upper position of the column legs, and the upper part of the handrail column is directed outward of each of the pair of ladder frames. In a workbench with handrails that foldably attaches a handrail frame that protrudes in a substantially horizontal direction, the gist is to place a baseboard on the side edge of the treadle and fix the end of the baseboard to the support leg. is there.
[0018]
Secondly, the skirting board is formed of a plate-like member, the lower end of the plate-like member is pivotally attached to the upper end of the side part of the tread, a locking member is attached to the end of the plate-like member, and The gist is to attach a latch receiving member to the inside, and detachably latch the latch member to the latch receiving member to fix the plate-like member to the support leg.
[0019]
Thirdly, the skirting board is formed of a flexible member having elasticity, and the gist is that both ends are fixed to the support legs.
[0020]
Fourthly, the gist of the skirting board is positioned between a pair of opposing ladder frames and fixed to the support legs.
[0021]
According to the first aspect of the present invention, since the skirting board is provided on the side edge of the tread board by providing the skirting board on the side edge of the tread board, the skirting board is formed even if the upper surface of the tread board is flat. This prevents the tool or material from dropping from the tread. Also, even if the operator slides his / her foot on the tread board, it will not be dropped as it is blocked by the skirting board.
[0022]
In addition, because the end of the skirting board is fixed to the support leg, the tread board of the tread board unit that is foldable can be lifted by the base board even if it tries to lift up due to external forces such as the force generated when the treadle is raised or lowered. Can be prevented.
[0023]
According to the second aspect of the present invention, in addition to the above-described operation, if the support base is opened in a C shape and the treadle is set horizontally, the skirting board is pivoted upward about the pivoting portion. Stand up on the side of the tread. If the locking member attached to the skirting board is locked to the locking receiving member attached to the support leg in this state, the end of the skirting board is fixed to the support leg, and the skirting board is locked in place. It will never fall. Further, the fixing of the skirting board to the support leg prevents the tread board from being lifted through the skirting board.
[0024]
When folding the treadle, release the latching between the locking member and the latch receiving member, rotate the skirting board toward the treadle around the pivot point, and fold it on the treadle so that it folds on the treadle. It is.
[0025]
According to the third aspect of the present invention, since the skirting board is formed of a flexible member having elasticity, when folding the workbench with a handrail, if the workbench is folded, the space between the footboard and the support leg is folded. It is folded in a crumpled state as it is. When the support leg of the workbench with handrail is opened in the shape of a letter when in use, the skirting board is fixed to the support leg at both ends. Get up automatically. In this state, since the baseboard has elasticity, it is stretched around the side of the tread.
[0026]
According to the fourth aspect of the present invention, in addition to the above-described function, the baseboard is disposed only between the pair of opposing ladder frames, so that there is no handrail frame and the baseboard is easy to fall from the tread. Therefore, the safety of workers can be ensured. In addition, since there is no skirting board on the side of the side where the treadle is provided, the skirting board does not get in the way when moving from the treadle to the treadle.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is an overall perspective view showing an embodiment of a workbench with a handrail according to the present invention, FIG. 2 is a side view of the same main part, FIG. 3 is a front view of the same, FIG. 4 is a front view of the same main part, FIG. Is a cross-sectional plan view of the main part, and the basic structure of the handrail-equipped workbench is basically the same as the conventional example shown in FIGS. 10 to 12, and the same reference numerals are used for the same components as in the conventional example Is attached.
[0028]
The workbench with handrail 5 of the present invention also includes a pair of ladder frames 3, a step board unit 6 that is foldably foldable between the ladder frames 3, and a handrail frame that is foldably attached to the top of the pair of ladder frames 3. 8 and 9.
[0029]
The ladder frame 3 spans a plurality of (seven in the illustrated example) traversing bridges 2 at appropriate intervals (in the illustrated example, approximately 300 mm in the height direction) between the pair of support legs 1 and 1. The handrail support 4 is extended upward from the upper end of the support leg 1, and both the support leg 1 and the handrail support 4 are made of, for example, an aluminum alloy and formed in a U-shaped cross section.
[0030]
In this embodiment, the support leg 1 is divided into an upper main leg 1a and a lower main leg 1b, and a lower end of the upper main leg 1a and an upper end of the lower main leg 1b are connected to each other by a connecting bracket 10 so as to be rotatable. 1b was combined so as to be rotatable upward with respect to the upper main leg 1a.
[0031]
Then, the length of the traverse 2 is set to be shorter as the lower main leg 1b becomes the upper one, and is formed so that the interval between the support legs 1 and 1 becomes narrower as it goes upward.
[0032]
The tread board unit 6 is rotatably mounted between the supporting column legs 1 and 1 so as to be positioned at the upper end portion of the column legs 1. The tread board unit 6 includes a tread board 6a and a stay 6b that supports the tread board 6a from below, and the stay 6b is pivotally attached at one end to a substantially central position below the tread board 6a, and the other end. The upper end of the support leg 1 or the lower end of the handrail support 4 or the boundary between the support leg 1 and the handrail support 4 is pivotally attached by a mounting bracket.
[0033]
The tread board 6a is pivotally pivoted at the end where the stay 6b is not overlapped to the upper end of the support leg 1 or the lower end of the handrail support 4 or the boundary between the support leg 1 and the handrail support 4 with a mounting bracket. To wear.
[0034]
The upper end portions of the handrail support columns 4 and 4 are brought into contact with each other, and are coupled by a rectangular rotating metal fitting 11 so as to be rotatable. In the figure, reference numeral 14 denotes an extension leg attached to the lower part of the support leg 1 so as to be freely extendable.
[0035]
The handrail frames 8 and 9 attached to the handrail strut 4 at the top of the ladder frame 3 are a stay 13 whose base end is pivotably mounted in the middle of the handrail strut 4 and a pivot 13 at the tip of the stay 13. The combined opening end portion is composed of a handrail frame main body 12 that is detachably locked to the upper end of the handrail support column 4, and an aluminum alloy or the like is used, and the handrail frame main body 12 is formed in a cylindrical hollow mold. Formed.
[0036]
In the handrail-equipped worktable 5 having such a configuration, the baseboard 15 is attached to the side edge of the tread 6a. 2 to 7 show the first embodiment, which is formed of a horizontally elongated plate-like member using, for example, aluminum, aluminum alloy, iron, stainless steel, synthetic resin, wood, or the like having rigidity. The part was pivotally attached to the upper edge of the side part of the tread 6a with a mounting bracket 16 such as a hinge.
[0037]
As shown in FIGS. 2, 4 and 5, the skirting board 15 is formed in a substantially U-shaped side, and the lower inclined portion 15a and the upper vertical portion 15b are formed to have the same width as the tread 6a. A horizontal portion 15c that is bent horizontally toward the outside from the tip is formed, and the horizontal portion 15c is formed to be shorter by the width of the support leg 1 so as not to hit the support leg 1.
[0038]
As shown in FIGS. 6 and 7, a roller 17 is provided on the outside of the vertical portion 15 b of the skirting board 15 as a locking member with the support leg 1. On the other hand, a roller catch 18 to which the roller 17 is engaged is attached as an engagement receiving member inside the columnar leg 1 having a U-shaped cross section. The roller catch 18 is composed of a pair of openable and closable rollers urged in the opposite direction. The fixing member by the roller 17 and the roller catch 18 can be attached to both ends of the skirting board 15, but can be locked even if attached to only one end as shown.
[0039]
Next, the usage will be described. FIG. 11 and FIG. 12 show the storage state in which the handrail-equipped work table 5 is folded. In this state, the lower main leg 1b is folded upward via the connecting bracket 10 and overlaps with the upper main leg 1a and the handrail support column 4. ing. Further, the tread unit 6 has a stay 6b and a tread plate 6a that are connected to each other so that the stay 6b and the tread plate 6a are moved upwards with respect to the pivoted portion of the ladder frame 3, respectively. It rotates and is folded between the opposing ladder frames 3 in parallel therewith.
[0040]
As shown by the chain line in FIG. 4, the skirting board 15 is folded in a state where the whole is superimposed on the tread 6a with the mounting bracket 16 as an axis. In this state, since the roller catch 18 is disposed inside the columnar leg 1 having a U-shaped cross section, the roller catch 18 does not protrude outward, does not collide with other objects, and does not interfere with folding. .
[0041]
As for the handrail frames 8 and 9, the stay 13 is rotated downward about the pivot shaft attachment portion with the handrail support column 4, thereby rotating the handrail frame body 12 rotatably connected to the stay 13 downward. Move. Thereby, the stay 13 and the handrail frame main body 12 are stored inside the handrail support column 4 in a state of being folded in parallel. In this state, the tread board 6a fits inside the handrail frames 8 and 9.
[0042]
In order to carry and use the handrail-equipped worktable 5 in the use site with the flat and short folded state as described above, the lower main leg 1b is rotated downward via the connecting bracket 10 and the upper main leg. As a single state, 1a, the pair of ladder frames 3, 3 are opened in a square shape around the upper rotating metal fitting 11 as an axis. In this state, in the tread unit 6, the tread plate 6a and the stay 6b are in a horizontal state in conjunction with the open leg of the handrail-equipped work table 5.
[0043]
In this state, the skirting board 15 is folded on the tread board 6a and is in a horizontal state. In order to stand the skirting board 15 perpendicularly to the side of the tread 6a, the pedestal 2 is raised, the skirting board 15 is erected with the location of the mounting bracket 16 as a central axis, and the roller catch 18 is composed of a pair of rollers. And the skirting board 15 is fixed to the support leg 1.
[0044]
In order to set the handrail frames 8 and 9 horizontally, the handrail frame main body 12 that is suspended downward is pulled up while standing on the tread board 6a with the stepped-up rail 2 raised. As a result, the stay 13 pivots around the pivot shaft attachment portion with the handrail support column 4 and the stay 13 is pulled up while pivoting upward, so that the stay 13 and the handrail frame main body 12 are pivotally attached. When the portion is pulled up to a position substantially horizontal with the upper end of the handrail post 4, the handrail frame body 12 is locked to the handrail post 4.
[0045]
Since both handrail frames 8 and 9 are opened on both sides of the handrail support column 4 by the same operation, the work is performed on the tread 6a in this state. During operation, the skirting board 15 stands on the side of the tread board 6a, so even if the top surface of the tread board 6a is flat, it is blocked by the skirting board 15 to prevent tools, materials, etc. from falling on the tread board 6a. it can. Further, even if the operator slides his / her foot on the tread 6a, it will not be blocked by the skirting board 15 and fall as it is from the narrow triangular gap formed laterally by the support leg 2.
[0046]
Further, since both ends of the skirting board 15 are fixed to the support leg 1, even if the tread board 6a of the tread board unit 6 foldably folds up is lifted by an external force such as a force generated when the tread bar 2 is raised or lowered, etc. The skirting board 15 can prevent the lifting.
[0047]
FIGS. 8 and 9 show a second embodiment of the skirting board 15. The base material of the skirting board 15 is made of a flexible member having elasticity, for example, soft rubber, soft synthetic resin, etc., and both ends thereof are strut legs. 1 was fixed with a bolt, a rivet, an adhesive or the like, and the lower end of the skirting board 15 was brought into contact with the tread 6a.
[0048]
The bottom edge of the skirting board 15 may be brought into contact with the tread 6a as it is, but since the tread 6a is rotatable with respect to the support leg 1, there is a little gap between the tread 6a and the support leg 1. In order to cope with the occurrence and prevent the tool or the like from dropping from this gap, as shown in FIG. 9, the lower end portion of the skirting board 15 is bent at right angles to the direction of the tread 6a so that the end portion rests on the tread 6a. It may be.
[0049]
In the state where the tread 6a is unfolded, the left and right ends of the skirting board 15 are fixed to the support leg 1 with bolts or the like, so that the base board 15 is stretched by being pulled in a horizontal direction. It is good to have it.
[0050]
When folding the workbench with handrail 5, the skirting board 15 of the second embodiment is crumpled as it is in the space between the tread board 6 a and the column base 1 by pulling the opposite ladder frame 3 and folding the tread board 6 a. It is folded in the state. When the support leg 1 of the workbench with handrail 5 is opened in the shape of a letter when in use, the skirting board 15 is fixed to the support leg 1 at both ends. , Automatically rises to the side of the tread board 6a. In this state, since the baseboard 15 has elasticity, it is stretched around the side of the tread board 6a.
[0051]
【The invention's effect】
As described above, the handrail-equipped workbench according to the present invention prevents tools and materials from slipping and falling from the tread, and the operator can put his feet on the tread on the side where the handrail frame is not attached. Even if it is slid, it prevents the body from sliding into the narrow triangular gap formed by the handrail struts, and prevents the handrail-equipped work table itself from falling over following the fall of the worker. Safety can be improved, and for that reason, there is no trouble in folding the handrail-equipped workbench, and the usability is not particularly deteriorated.
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing a first embodiment of a workbench with a handrail according to the present invention.
FIG. 2 is a side view of an essential part showing a first embodiment of a workbench with a handrail according to the present invention.
FIG. 3 is a front view showing a first embodiment of a workbench with a handrail according to the present invention.
FIG. 4 is a front view of an essential part showing a first embodiment of a workbench with a handrail according to the present invention.
FIG. 5 is a cross-sectional plan view of an essential part showing a first embodiment of a workbench with a handrail according to the present invention.
FIG. 6 is a front view of a fixed portion, which is a main part of the first embodiment of the handrail workbench according to the present invention, in a released state.
FIG. 7 is a front view of a locking state of a fixed portion, which is a main part of the first embodiment of the workbench with a handrail according to the present invention.
FIG. 8 is a side view of an essential part showing a second embodiment of a workbench with a handrail according to the present invention.
FIG. 9 is a front view of an essential part showing a second embodiment of a workbench with a handrail according to the present invention.
FIG. 10 is a perspective view showing a conventional example of a handrail-equipped work table.
FIG. 11 is a side view showing a conventional example of a workbench with a handrail in a folded state.
FIG. 12 is a front view showing a conventional example of a workbench with a handrail in a folded state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Prop leg 2 ... Foot rail 1a ... Upper main leg 1b ... Lower main leg 3 ... Ladder frame 4 ... Handrail support 5 ... Handrail work bench 6 ... Tread board unit 6a ... Tread board 6b ... Stay 8 ... Handrail frame 9 ... Handrail frame
10 ... Connecting bracket 11 ... Rotating bracket
12 ... handrail frame body 13 ... stay
14 ... Extension leg 15 ... Skirting board
15a ... Inclined part 15b ... Vertical part
15c ... Horizontal part 16 ... Mounting bracket
17 ... Roller 18 ... Roller catch

Claims

上部に手摺支柱を延設した一対の支柱脚間に複数の踏桟を適宜間隔で取り付けて梯子枠を形成し、該梯子枠の一対を対向させ上端を相互に回動自在に軸着し、支柱脚の上部位置で梯子枠間に踏板ユニットを折り畳み自在に架け渡し、手摺支柱の上部に、一対の梯子枠のそれぞれの外方に向けて略水平方向に突出する手摺枠を折り畳み自在に取り付けた手摺付作業台において、踏板の側縁に幅木を配置し、該幅木の端を支柱脚に固定することを特徴とする手摺付作業台。A plurality of steps are attached at appropriate intervals between a pair of strut legs with handrail struts extending at the top to form a ladder frame, and a pair of the ladder frames are opposed to each other so that the upper ends are pivotally attached to each other, The treadle unit is foldable between the ladder frames at the upper position of the support legs, and a handrail frame that protrudes in a substantially horizontal direction toward the outside of each of the pair of ladder frames is attached to the upper part of the handrail support. A workbench with a handrail, wherein a baseboard is arranged on a side edge of the tread board and an end of the baseboard is fixed to a support leg.

幅木は板状部材で形成し、該板状部材の下端を踏板の側部上端に回動自在に軸着し、板状部材の端に係止部材を取り付けるとともに支柱脚の内側に係止受け部材を取り付け、該係止受け部材に前記係止部材を着脱自在に係止して板状部材を支柱脚に固定する請求項１記載の手摺付作業台。The skirting board is formed of a plate-like member, and the lower end of the plate-like member is pivotally attached to the upper end of the side part of the treadle so that a locking member is attached to the end of the plate-like member and locked to the inner side of the support leg. The work table with handrail according to claim 1, wherein a receiving member is attached, and the locking member is detachably locked to the locking receiving member to fix the plate-like member to the support leg.

幅木は伸縮性を有する可撓性部材で形成し、両端を支柱脚に固定した請求項１記載の手摺付作業台。The work table with handrail according to claim 1, wherein the skirting board is formed of a flexible member having elasticity, and both ends thereof are fixed to the support legs.

幅木は対向する一対の梯子枠間に位置させて支柱脚に固定する請求項１から請求項３のいずれかに記載の手摺付作業台。The work board with a handrail according to any one of claims 1 to 3, wherein the skirting board is positioned between a pair of opposing ladder frames and fixed to the support legs.