A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To divert a ladder foldable into a bar shape as a handrail or a protection fence.SOLUTION: A folding ladder of this invention is a folding ladder that can be folded into a single bar shape in which a pair of frames consisting of a wide head through a notch-shaped step on a side of one end of top and bottom and a narrow long rod extending from a step toward the other end, which are vertically and horizontally reversed, are connected in a form of parallel links with multiple crosspieces serving as treads, and the long rods are overlapped with each other. It can be used as a handrail or protective fence by forming a mortise-shaped recess that opens to the side of the step where it abuts against the end face of the long rod of the head and is positioned and fixed in the front, back, left, and right directions by a mortise. In addition, a peripheral wall of the recess is composed of an inner surface of an U-groove-shaped or square-groove-shaped recess formed in the step of the head of one frame in plan view, and the end face of the long rod facing the recess.SELECTED DRAWING: Figure 2
【課題】棒状に折畳み可能な梯子を手摺りや防護柵として転用可能にする。【解決手段】この発明の折畳み梯子は、上下の一端側の側面の切欠状の段部を介して幅広のヘッド部と該段部より他方の端部に向って延びる幅狭の長杆部からなる上下左右逆向きの一対のフレーム間を踏桟となる複数本の横木で平行リンク状に連結し、長杆部同士を重ね合わせて一本の棒状に折畳み可能な折畳み梯子であって、上記段部におけるヘッド部の長杆部端面との突合せ部に側面側に開口し、ホゾ差しによって前後左右方向に位置決め固定をするホゾ穴状の凹部を形成してなる手摺り又は防護柵として転用可能である。また、凹部の周壁が一方のフレームのヘッド部の段部に形成された平面視でＵ溝状又は角溝状の凹部の内面と、該凹部に対向する長杆部の端面とで構成される。【選択図】図２
To divert a ladder foldable into a bar shape as a handrail or a protection fence.SOLUTION: A folding ladder of this invention is a folding ladder that can be folded into a single bar shape in which a pair of frames consisting of a wide head through a notch-shaped step on a side of one end of top and bottom and a narrow long rod extending from a step toward the other end, which are vertically and horizontally reversed, are connected in a form of parallel links with multiple crosspieces serving as treads, and the long rods are overlapped with each other. It can be used as a handrail or protective fence by forming a mortise-shaped recess that opens to the side of the step where it abuts against the end face of the long rod of the head and is positioned and fixed in the front, back, left, and right directions by a mortise. In addition, a peripheral wall of the recess is composed of an inner surface of an U-groove-shaped or square-groove-shaped recess formed in the step of the head of one frame in plan view, and the end face of the long rod facing the recess.SELECTED DRAWING: Figure 2
【課題】棒状に折畳み可能な梯子を手摺りや防護柵として転用可能にする。【解決手段】この発明の折畳み梯子は、上下の一端側の側面の切欠状の段部を介して幅広のヘッド部と該段部より他方の端部に向って延びる幅狭の長杆部からなる上下左右逆向きの一対のフレーム間を踏桟となる複数本の横木で平行リンク状に連結し、長杆部同士を重ね合わせて一本の棒状に折畳み可能な折畳み梯子であって、上記段部におけるヘッド部の長杆部端面との突合せ部に側面側に開口し、ホゾ差しによって前後左右方向に位置決め固定をするホゾ穴状の凹部を形成してなる手摺り又は防護柵として転用可能である。また、凹部の周壁が一方のフレームのヘッド部の段部に形成された平面視でＵ溝状又は角溝状の凹部の内面と、該凹部に対向する長杆部の端面とで構成される。【選択図】図２
FOLDING LADDER
折畳み梯子
GOTO FUMIKI (author)
2023-05-11
Patent
Electronic Resource
Japanese