JP7474455B2 - Temporary flooring and its gripping hardware - Google Patents

Temporary flooring and its gripping hardware Download PDF

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JP7474455B2
JP7474455B2 JP2020020221A JP2020020221A JP7474455B2 JP 7474455 B2 JP7474455 B2 JP 7474455B2 JP 2020020221 A JP2020020221 A JP 2020020221A JP 2020020221 A JP2020020221 A JP 2020020221A JP 7474455 B2 JP7474455 B2 JP 7474455B2
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亮祐 川久
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株式会社杉孝グループホールディングス
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本発明は、仮設床材及びそのつかみ金具に関するものであり、より詳細には、仮設足場の横架材等に係合するつかみ金具によって隣り合う横架材等の間に架設又は懸架され、仮設足場の作業通路又は作業床を形成する仮設床材及びそのつかみ金具に関するものである。 The present invention relates to temporary flooring and its gripping hardware, and more specifically to temporary flooring and its gripping hardware that are erected or suspended between adjacent cross members of a temporary scaffolding by means of gripping hardware that engages with the cross members, etc., to form a work passage or work floor of the temporary scaffolding.

建築物、土木構造物、プラント設備等の建設工事に使用される仮設足場として、枠組足場、単管足場、楔結合式足場等の各種形式の仮設足場が日本国内において広く普及している。枠組足場又は楔結合式足場等において作業通路又は作業床を構成する仮設床材として、「床付き布わく」(床付き布枠)が知られている（特許文献１～４、非特許文献１）。床付き布枠（布わく）は、床材、布材、梁材及びつかみ金具等を一体的に組み付けた構成を有する金属製の仮設床材であり、床付き布枠の各部構造については、比較的厳格な基準が定められている（非特許文献２）。例えば、つかみ金具は、原則として、非特許文献２に記載される如く、「建わくの横架材からの浮き上がりを防止するための外れ止めを有していること」を要する。 Various types of temporary scaffolding, such as frame scaffolding, single-tube scaffolding, and wedge-connected scaffolding, are widely used in Japan for construction work on buildings, civil engineering structures, plant facilities, etc. In frame scaffolding or wedge-connected scaffolding, a "floor-attached cloth frame" is known as a temporary floor material that forms a work passage or work floor (Patent Documents 1 to 4, Non-Patent Document 1). A floor-attached cloth frame is a metal temporary floor material that is composed of floor materials, cloth materials, beam materials, gripping metal fittings, etc., assembled together, and relatively strict standards have been established for the structure of each part of the floor-attached cloth frame (Non-Patent Document 2). For example, as described in Non-Patent Document 2, the gripping metal fittings are required, in principle, to "have a stopper to prevent them from lifting up from the cross members of the building frame."

一般に、床付き布枠は、左右一対のつかみ金具を両端部に有する。各つかみ金具のフック部分は、建てわく（建枠）の横架材、或いは、左右の支柱に楔結合した腕木等に係止する。各つかみ金具の外れ止め（可動爪）は、重力式セルフロック機構を有し、つかみ金具のフック部分を横架材又は腕木等（以下、横架材、腕木、桁材、梁材等の床荷重支持用の横部材又は水平部材を総称して「横架材」というものとする。）に係止すると、セルフロック機構がこの係止動作に機構連動してつかみ金具を横架材に自動的にロックし、横架材に対するフック部分の係止状態を拘束する。かくして、各つかみ金具は、セルフロック式に横架材上に係留されるが、床付き布枠を横架材から撤去する際には、セルフロック機構を手作業で解放しなければならない。図２３（Ａ）及び図２３（Ｂ）には、従来の床付き布枠１００を建枠Ａの横架材Ｂから取り外す過程が例示されている。足場解体時等に床付き布枠を横架材から取り外す際には、図２３（Ａ）に示す如く、床付き布枠１００の両端部に設けられたつかみ金具１０４の重力式セルフロック機構を実質的に同時に手動解放して床付き布枠1００を全体的に持ち上げるか、或いは、図２３（Ｂ）に示す如く、床付き布枠１００の一端部に設けられたつかみ金具１０４の重力式セルフロック機構を手動で解放して床付き布枠１００の一端部を持ち上げ、その傾斜状態を維持しつつ、床付き布枠１００の他端部に設けられたつかみ金具１０４の重力式セルフロック機構を手動で解放して床付き布枠１００の他端部を更に持ち上げる必要が生じる。前者の床付き布枠撤去作業は、一枚の床付き布枠の撤去のために複数の作業従事者等（以下、「作業者」という。）を要する作業形態であるので、実務的には、あまり採用されていない。他方、後者の床付き布枠撤去作業は、作業者が単独で遂行し得る作業であり、これは、一般に採用される作業形態であるが、作業者の負担が比較的大きいことから、作業上の負担を軽減することが望ましい。 Generally, a floor-attached fabric frame has a pair of gripping metal fittings on both ends. The hook portion of each gripping metal fitting is engaged with a cross member of the building frame, or with an arm or the like that is wedged with the left and right supports. The anti-detachment stopper (movable claw) of each gripping metal fitting has a gravity-type self-locking mechanism, and when the hook portion of the gripping metal fitting is engaged with a cross member or arm or the like (hereinafter, cross members, arms, girders, beams, and other horizontal or horizontal members for supporting floor loads, such as cross members, arms, girders, and beams, are collectively referred to as "cross members"), the self-locking mechanism automatically locks the gripping metal fitting to the cross member in conjunction with this locking action, and restricts the engagement state of the hook portion to the cross member. Thus, each gripping metal fitting is anchored to the cross member in a self-locking manner, but when removing the floor-attached fabric frame from the cross member, the self-locking mechanism must be manually released. 23(A) and 23(B) show an example of a process for removing a conventional floor-mounted cloth frame 100 from a cross member B of a building frame A. When removing the floor-mounted cloth frame from a cross member during dismantling of scaffolding, etc., as shown in FIG. 23(A), the gravity-type self-locking mechanisms of the gripping metal fittings 104 provided at both ends of the floor-mounted cloth frame 100 are manually released substantially simultaneously to lift the floor-mounted cloth frame 100 as a whole, or as shown in FIG. 23(B), the gravity-type self-locking mechanism of the gripping metal fittings 104 provided at one end of the floor-mounted cloth frame 100 is manually released to lift one end of the floor-mounted cloth frame 100, and while maintaining the inclined state, the gravity-type self-locking mechanism of the gripping metal fittings 104 provided at the other end of the floor-mounted cloth frame 100 is manually released to further lift the other end of the floor-mounted cloth frame 100. The former type of floor-attached cloth frame removal work is a type of work that requires multiple workers (hereinafter referred to as "workers") to remove a single floor-attached cloth frame, and is therefore not widely adopted in practice. On the other hand, the latter type of floor-attached cloth frame removal work is a type of work that can be carried out by a single worker, and although this is a commonly adopted type of work, it places a relatively large burden on the worker, and so it is desirable to reduce the burden on the worker.

床付き布枠撤去時の作業上の負担を軽減する対策として、外れ止めの重力式セルフロック機構を過渡的に解放状態に保持し得るように構成された床付き布枠が特許文献５に記載されている。この構成の床付き布枠においては、外れ止めを解放した直後につかみ金具を持ち上げて横架材上に載置することができるので、一端部の荷重を横架材によって過渡的に支持又は支承した状態で他端部の外れ止めを解放することができる。このような床付き布枠を使用した場合、単独の作業者が床付き布枠の端部間で移動して各端部を順次持ち上げ、床付き布枠を比較的容易に撤去し得るかもしれない。 As a measure to reduce the workload when removing a floor-mounted cloth frame, Patent Document 5 describes a floor-mounted cloth frame that is configured to temporarily hold the gravity-type self-locking mechanism of the anti-slip mechanism in an released state. In a floor-mounted cloth frame of this configuration, the gripping metal fittings can be lifted and placed on the cross member immediately after the anti-slip mechanism is released, so that the anti-slip mechanism at one end can be released while the load at the other end is temporarily supported or borne by the cross member. When such a floor-mounted cloth frame is used, a single worker may be able to move between the ends of the floor-mounted cloth frame and lift each end in turn, making it relatively easy to remove the floor-mounted cloth frame.

特開2017-160666号公報JP 2017-160666 A 特開2010-185262号公報JP 2010-185262 A 特開2014-80845号公報JP 2014-80845 A 特開2000-179149号公報JP 2000-179149 A 特開2017-166207号公報JP 2017-166207 A

建築工事標準仕様書・同解説、ＪＡＳＳ２、仮設工事（社団法人日本建築学会発行）Standard Specifications for Building Construction and Commentary, JASS2, Temporary Construction (Published by the Architectural Institute of Japan) 仮設工事認定基準とその解説、第８版（一般社団法人仮設工業会発行）Temporary Construction Certification Standards and Their Commentary, 8th Edition (Published by the Temporary Construction Industry Association)

しかしながら、従来の床付き布枠は、４箇所のつかみ金具の全てにセルフロック式可動爪を外れ止め部材として備えるので、作業者が全てのつかみ金具の手動ロック解除操作を行う必要があり、従って、床付き布枠撤去時に床付き布枠の一端部の荷重を横架材で過渡的に支持又は支承し得たとしても、床付き布枠撤去作業は、一般に作業者が単独で（一人で）遂行することが多いという実務上の実態等を考慮すると、更なる作業者の負担軽減を図る対策が望まれる。 However, conventional floor-mounted cloth frames are equipped with self-locking movable claws as anti-detachment members on all four gripping fittings, so workers must manually unlock all of the gripping fittings. Therefore, even if the load on one end of the floor-mounted cloth frame can be temporarily supported or borne by a cross member when removing the floor-mounted cloth frame, taking into account the practical reality that floor-mounted cloth frame removal work is generally often carried out by a worker alone, measures to further reduce the burden on workers are desired.

本発明は、このような事情に鑑みてなされたものであり、その目的とするところは、つかみ金具によって横架材間に架設又は懸架された仮設床材を撤去する仮設床材撤去作業の作業性を改善し、撤去作業時の作業者の作業上の負担又は負荷を軽減することにある。なお、本明細書において「仮設床材」の用語は、床付き布枠に限定されず、布枠を備えない床材を包含した仮設足場の床構造体、床構成部材又は床構成要素を総称する用語として記載したものである。 The present invention was made in consideration of these circumstances, and its purpose is to improve the workability of the temporary flooring removal work in which temporary flooring erected or suspended between cross members by means of gripping fittings is removed, and to reduce the burden or load on the worker during the removal work. Note that in this specification, the term "temporary flooring" is not limited to floor-attached cloth frames, but is described as a general term for floor structures, floor constituent members, or floor components of temporary scaffolding, including flooring without cloth frames.

上記目的を達成すべく、本発明は、仮設足場の作業床又は作業通路を形成する仮設床材のつかみ金具であって、
仮設床材の角部に配置され、仮設床材の端部から布方向又は桁方向に突出するように床材本体の端部に突設され、仮設床材を支持又は支承する横架材に係止して仮設床材の鉛直荷重を該横架材に伝達する仮設床材のつかみ金具において、
前記床材本体に固定される基部と、前記横架材の上半部外周面に着座して仮設床材の鉛直荷重を該横架材に伝達する着座面とを備えた本体部分と、
前記横架材の床材本体側の領域で前記本体部分に設けられた外れ止め部材又は外れ止め部分と、
前記本体部分に回動可能又は面内変位可能に支持又は支承され、前記床材本体とは反対の側において前記横架材の上半部外周面に沿って延びる横架材係合面を備え、前記横架材によって該横架材係合面を押圧することにより、前記本体部分に対して上方に回動し、或いは、該本体部分に対して相対的に面内変位する可動フックとを有することを特徴とする仮設床材のつかみ金具を提供する。 In order to achieve the above object, the present invention provides a gripping fixture for a temporary floor material forming a working floor or a working passage of a temporary scaffold,
A temporary floor gripping metal fitting is arranged at the corner of a temporary flooring material, protrudes from the end of the temporary flooring material in the fabric direction or the girder direction, and engages with a cross member that supports or supports the temporary flooring material to transmit the vertical load of the temporary flooring material to the cross member.
A main body portion including a base portion fixed to the floor material main body and a seating surface seated on the outer peripheral surface of the upper half of the cross member to transmit the vertical load of the temporary floor material to the cross member;
A stopper member or stopper portion provided on the main body portion in the area of the floor material main body side of the cross member;
The present invention provides a gripping fitting for temporary flooring, characterized in that it has a movable hook which is supported or borne by the main body portion so as to be rotatable or displaceable in-plane, and which has a cross member engagement surface extending along the outer peripheral surface of the upper half of the cross member on the side opposite the flooring main body, and which rotates upward with respect to the main body portion or displaces in-plane relatively to the main body portion when the cross member presses against the cross member engagement surface.

本発明は又、上記目的を達成すべく、仮設足場の作業床又は作業通路を形成する仮設床材のつかみ金具であって、
仮設床材の端部から布方向又は桁方向に突出するように床材本体の端部に突設され、仮設床材を支持又は支承する横架材に係止して仮設床材の荷重を該横架材に伝達する仮設床材のつかみ金具において、
前記床材本体に固定される基部と、前記横架材の上半部外周面に着座するための着座面とを備えた本体部分と、
前記横架材の床材本体側の領域で前記本体部分に設けられた外れ止め部材又は外れ止め部分と、
前記本体部分に回動可能又は面内変位可能に支持又は支承され、前記床材本体とは反対の側において前記横架材の上半部外周面に沿って延びる横架材係合面を備え、前記横架材によって該横架材係合面を押圧することにより、前記本体部分に対して上方に回動し、或いは、該本体部分に対して相対的に面内変位する可動フックとを有する仮設床材のつかみ金具であり、
下記(1)、(2)、(3)又は(4)のいずれかの構成又は構造を更に有することを特徴とする仮設床材のつかみ金具を提供する。
(1)前記本体部分の着座面及び前記可動フックの横架材係合面によって画成される横架材収容域に前記横架材を収容するとともに、前記着座面によって仮設床材の荷重を前記横架材に伝達し、
前記横架材の下半部外周面に沿って延びる前記外れ止め部材又は外れ止め部分の横架材係合面と前記横架材との係合又は衝合によって所定寸法以上のつかみ金具の上方変位を阻止し、
前記本体部分の着座面又は前記可動フックの横架材係合面と前記横架材との係合又は衝合によってつかみ金具の水平変位を拘束する（請求項２）。
(2)前記可動フックは、その枢動軸線を中心とする円弧状軌道に沿って延在する湾曲スロットを有し、該スロットを貫通するガイドピンが前記本体部分に突設され、前記枢動軸線を中心とした前記可動フックの回動の角度範囲は、前記スロット及び前記ガイドピンによって規制される(請求項６)。
(3)前記可動フックは、前記本体部分の側面に突設されたスタッド又は支軸が貫通するスロット又は長孔を有し、該スロット又は長孔と前記スタッド又は支軸との相対変位により、面内変位する（請求項８）。
(4)前記本体部分の着座面及び前記可動フックの横架材係合面は、前記横架材の外周面に面接触し又は近接して延びるように湾曲しており、前記横架材の下半部外周面に沿って延びる前記外れ止め部材又は外れ止め部分の横架材係合面は、前記着座面が前記横架材に着座したつかみ金具の係止位置において前記横架材から離間し、前記可動フックの横架材係合面は、該係止位置において前記横架材から僅かに離間し、或いは、該可動フックの自重により前記横架材の外周面に接触し又は着座する（請求項１１）。
なお、本明細書において、「回動」は、必ずしも特定の回転中心を中心とした回転方向の運動に限定されるものではなく、横架材の外周面に沿う方向に移動又は変位する揺動を含む概念である。また、本明細書において、「面内変位」は、可動フック又は本体部分の中心平面と実質的に同一又は平行な平面内、或いは、実質的に鉛直な平面内における可動フックの変位を意味する。この面内変位は、側面視における可動フックの挙動により特定し得る可動フックの二次元的変位として把握しても良い。 In order to achieve the above object, the present invention also provides a gripping fixture for a temporary floor material forming a working floor or a working passage of a temporary scaffold, comprising:
A temporary floor gripping metal fitting is provided at the end of a flooring body so as to protrude from the end of the temporary flooring in the fabric direction or the girder direction, and engages with a cross member that supports or supports the temporary flooring to transmit the load of the temporary flooring to the cross member.
A main body portion including a base portion fixed to the floor material main body and a seating surface for seating on the outer peripheral surface of the upper half of the cross member;
A stopper member or stopper portion provided on the main body portion in the area of the floor material main body side of the cross member;
a movable hook that is supported or supported on the main body portion so as to be rotatable or displaceable in-plane, has a cross member engaging surface that extends along the outer peripheral surface of the upper half of the cross member on the side opposite to the floor material main body, and that rotates upward with respect to the main body portion or displaces in-plane relative to the main body portion by pressing the cross member engaging surface,
The present invention provides a gripping fitting for a temporary floor material, further comprising any one of the following configurations or structures (1), (2), (3) or (4):
(1) The horizontal member is accommodated in a horizontal member accommodation area defined by the seating surface of the main body portion and the horizontal member engagement surface of the movable hook, and the load of the temporary floor material is transmitted to the horizontal member by the seating surface ;
The engagement or collision between the cross member and the cross member engagement surface of the anti -slip member or anti-slip portion extending along the outer peripheral surface of the lower half of the cross member prevents upward displacement of the gripping metal fitting beyond a predetermined dimension ,
The horizontal displacement of the gripping fitting is restrained by the engagement or collision between the seating surface of the main body portion or the cross member engagement surface of the movable hook and the cross member (Claim 2) .
(2) The movable hook has a curved slot extending along an arcuate path centered on its pivot axis, a guide pin passing through the slot is protruded from the main body portion, and the angular range of rotation of the movable hook centered on the pivot axis is regulated by the slot and the guide pin (Claim 6) .
(3) The movable hook has a slot or long hole through which a stud or shaft protruding from the side of the main body passes, and is displaced in-plane due to relative displacement between the slot or long hole and the stud or shaft (Claim 8) .
(4) The seating surface of the main body and the cross member engaging surface of the movable hook are curved so as to be in face contact with or extend close to the outer peripheral surface of the cross member, and the cross member engaging surface of the anti-slip member or anti-slip portion extending along the outer peripheral surface of the lower half of the cross member is spaced away from the cross member at the engaging position of the gripping fitting seated on the cross member, and the cross member engaging surface of the movable hook is slightly spaced away from the cross member at the engaging position, or contacts or sits on the outer peripheral surface of the cross member due to the weight of the movable hook (Claim 11) .
In this specification, "rotation" is not necessarily limited to a rotational movement around a specific center of rotation, but is a concept including a swinging movement or displacement along the outer peripheral surface of the cross member. In addition , in this specification, "in-plane displacement" means a displacement of the movable hook in a plane substantially identical to or parallel to the central plane of the movable hook or the main body part, or in a plane substantially vertical. This in-plane displacement may be understood as a two-dimensional displacement of the movable hook that can be identified by the behavior of the movable hook in a side view.

本発明の上記構成によれば、つかみ金具の着座面が横架材の外周面に着座することにより、仮設床材の鉛直荷重が着座面を介して横架材に伝達し、仮設床材は、横架材によって支持又は支承される。仮設床材の鉛直荷重（上下方向）又は水平変位（布方向又は桁方向）は、横架材と着座面又は横架材係合面との係合又は衝合によって阻止される。上向き鉛直の外力がつかみ金具の本体部分に作用するとともに、床材本体の側に向かう水平荷重がつかみ金具の本体部分に作用すると、横架材の外周面が可動フックの横架材係合面を押圧し、この結果、可動フックは上方に受動（働）的に回動し又は面内変位して横架材収容域を開放する。即ち、仮設足場を全体的に傾斜させた後、仮設床材を上方且つ水平方向、或いは、全体的に斜め上方（傾斜方向）に変位させることにより、つかみ金具と横架材との係合を解くことができるので、作業者は、仮設床材の端部間で移動して両端部のつかみ金具を手動操作することを要しない。かくして、仮設床材撤去作業の作業性が大きく改善し、撤去作業時の作業者の作業上の負担又は負荷は、大幅に軽減する。 According to the above-mentioned configuration of the present invention, the seating surface of the gripping fitting sits on the outer circumferential surface of the cross member, so that the vertical load of the temporary flooring is transmitted to the cross member via the seating surface, and the temporary flooring is supported or supported by the cross member. The vertical load (up and down) or horizontal displacement (fabric direction or girder direction) of the temporary flooring is prevented by the engagement or collision between the cross member and the seating surface or cross member engagement surface. When an upward vertical external force acts on the main body of the gripping fitting and a horizontal load toward the flooring body acts on the main body of the gripping fitting, the outer circumferential surface of the cross member presses the cross member engagement surface of the movable hook, and as a result, the movable hook passively rotates upward or displaces in-plane, opening the cross member storage area. That is, after tilting the entire temporary scaffolding, the temporary flooring can be displaced upward and horizontally, or diagonally upward (in the tilt direction) as a whole, thereby disengaging the gripping hardware from the cross members, so that the worker does not need to move between the ends of the temporary flooring to manually operate the gripping hardware at both ends. This greatly improves the workability of the temporary flooring removal work, and greatly reduces the burden or load on the worker during the removal work.

他の観点より、本発明は、上記構成のつかみ金具を少なくとも一方の端部に備えた仮設床材を提供する。 From another perspective, the present invention provides a temporary flooring material having a gripping fitting of the above configuration at at least one end.

更に他の観点より、本発明は、上記仮設床材の施工方法であって、
仮設構造物の横架材に架設又は懸架された仮設床材を横架材から撤去するために、仮設床材の少なくとも一方の端部に配置された上記つかみ金具を横架材から離脱させる作業において、上記外れ止め部材又は外れ止め部分のロック解除操作を行うことなく、仮設床材を斜め上方(η)に移動させることにより、上記可動フックの横架材係合面を横架材の上半部外周面に摺接させて可動フックを受動的に回動又は面内変位せしめ、つかみ金具を横架材から離脱させることを特徴とする仮設床材の施工方法を提供する。 From yet another aspect, the present invention provides a construction method for the temporary floor material, comprising:
A method for constructing temporary flooring is provided in which, in order to remove a temporary flooring erected or suspended on a cross member of a temporary structure from the cross member, the gripping fittings arranged on at least one end of the temporary flooring are detached from the cross member, by moving the temporary flooring diagonally upward (η) without performing an unlocking operation on the anti-detachment member or anti-detachment portion, causing the cross member engagement surface of the movable hook to slide against the outer peripheral surface of the upper half of the cross member, passively rotating or displacing the movable hook in-plane, and detaching the gripping fittings from the cross member.

上記構成の可動フックを備えた本発明のつかみ金具、仮設床材又はその施工方法によれば、つかみ金具によって横架材間に架設又は懸架された仮設床材を撤去する仮設床材撤去作業の作業性を改善し、撤去作業時の作業者の作業上の負担又は負荷を軽減することができる。 The gripping fittings, temporary flooring, and construction method thereof of the present invention, which are equipped with the movable hooks configured as described above, can improve the workability of the temporary flooring removal work, which involves removing temporary flooring that has been erected or suspended between cross members using the gripping fittings, and can reduce the work burden or load on the worker during the removal work.

図１は、本発明の好適な実施例（第１実施例）に係るつかみ金具を備えた仮設床材を全体的に示す斜視図、平面図及び側面図である。FIG. 1 is a perspective view, a plan view, and a side view showing an overall structure of a temporary floor material equipped with gripping fittings according to a preferred embodiment (first embodiment) of the present invention. 図２は、図１に示す仮設床材の縦断面図である。FIG. 2 is a vertical cross-sectional view of the temporary floor material shown in FIG. 図３は、図１に示す第１押出形材の斜視図、端面図及び底面図である。3 is a perspective view, an end view, and a bottom view of the first extrusion profile shown in FIG. 1. FIG. 図４は、図１に示す第２押出形材の斜視図、端面図及び底面図である。4 is a perspective view, an end view, and a bottom view of the second extrusion profile shown in FIG. 1. FIG. 図５（Ａ）及び図５（Ｂ）は、可動爪式つかみ金具及び可動フック式つかみ金具の構成を示す仮設床材の部分拡大側面図であり、図５（Ｃ）は、可動爪式つかみ金具の構造を示す斜視図である。Figures 5 (A) and 5 (B) are partially enlarged side views of a temporary floor material showing the configuration of a movable claw type gripping fitting and a movable hook type gripping fitting, and Figure 5 (C) is an oblique view showing the structure of the movable claw type gripping fitting. 図６は、可動フック式つかみ金具の構造を示す側面図、端面図及び斜視図である。図６（Ａ）には、可動フックを配置した側のつかみ金具の側面図が示されており、図６（Ｂ）には、可動フックとは反対の側のつかみ金具の側面図が示されている。Fig. 6 shows a side view, an end view and a perspective view showing the structure of a movable hook type gripping fitting. Fig. 6(A) shows a side view of the gripping fitting on the side where the movable hook is arranged, and Fig. 6(B) shows a side view of the gripping fitting on the side opposite to the movable hook. 図７は、可動フック式つかみ金具の平面図、Ｉ－Ｉ線断面図、II－II線断面図及び底面図である。FIG. 7 is a plan view, a cross-sectional view taken along line II, a cross-sectional view taken along line II-II, and a bottom view of the movable hook-type gripping fitting. 図８は、仮設床材の撤去作業と関連したつかみ金具の作動態様を段階的に示す側面図である。FIG. 8 is a side view showing, in stages, the operation of the gripping fittings in relation to the removal of the temporary floor material. 図９は、本発明に係る仮設床材の撤去作業の作業手順を段階的に示す側面図である。FIG. 9 is a side view showing a step-by-step procedure for removing the temporary floor material according to the present invention. 図１０は、従来構造のつかみ金具を備えた床付き布枠（比較例）に関し、その撤去作業の作業手順を段階的に示す側面図である。FIG. 10 is a side view showing a step-by-step procedure for removing a floor-mounted cloth frame (comparative example) equipped with gripping fittings of a conventional structure. 図１１は、床面延設部材の構造を示す斜視図及び縦断面図である。FIG. 11 is a perspective view and a vertical cross-sectional view showing the structure of the floor surface extension member. 図１２は、本発明の他の好適な実施例（第２実施例）に係る仮設床材を全体的に示す斜視図及び平面図である。FIG. 12 is a perspective view and a plan view showing an entire temporary floor material according to another preferred embodiment (second embodiment) of the present invention. 図１３は、図１２に示す仮設床材の側面図及び部分破断拡大側面図である。13 is a side view and a partially cutaway enlarged side view of the temporary floor material shown in FIG. 12. FIG. 図１４は、図１２に示す仮設床材を構成する押出形材を示す斜視図、平面図及び側面図である。14A to 14C are a perspective view, a plan view, and a side view showing the extrusion members that constitute the temporary floor material shown in FIG. 図１５は、押出形材の拡大端面図及び部分破断拡大側面図である。FIG. 15 is an enlarged end view and an enlarged partially cutaway side view of the extruded profile. 図１６は、左右一対の押出形材をジョイント部材によって連結する態様を概念的に示す正面図である。FIG. 16 is a front view conceptually showing a mode in which a pair of left and right extruded members are connected by a joint member. 図１７（Ａ）は、左右一対の押出形材をジョイント部材によって連結してなる仮設床材の構成（フルサイズ）を示す縦断面図であり、図１７（Ｂ）は、単一の押出形材より構成される仮設床材の構成（ハーフサイズ）を示す縦断面図である。Figure 17(A) is a vertical cross-sectional view showing the configuration (full size) of a temporary floor material made up of a pair of left and right extruded profiles connected by a joint member, and Figure 17(B) is a vertical cross-sectional view showing the configuration (half size) of a temporary floor material made up of a single extruded profile. 図１８（Ａ）は、単一の押出形材より構成される仮設床材の一端部の構成を示す端面図であり、図１８（Ｂ）は、図１８（Ａ）に示す仮設床材の他端部の構成を示す端面図である。Figure 18(A) is an end view showing the configuration of one end of a temporary floor material made from a single extruded profile, and Figure 18(B) is an end view showing the configuration of the other end of the temporary floor material shown in Figure 18(A). 図１９は、本発明の更に他の実施例（第３実施例）に係る可動フック式つかみ金具の構造を示す側面図である。図１９（Ａ）には、可動フックを配置した側のつかみ金具の側面図が示されており、図１９（Ｂ）には、可動フックとは反対の側のつかみ金具の側面図が示されており、図１９（Ｃ）には、外れ止めのロックを解除した状態が示されている。Fig. 19 is a side view showing the structure of a movable hook type gripping fitting according to still another embodiment (third embodiment) of the present invention. Fig. 19(A) shows a side view of the gripping fitting on the side where the movable hook is arranged, Fig. 19(B) shows a side view of the gripping fitting on the side opposite the movable hook, and Fig. 19(C) shows the state in which the lock of the slip-off prevention device has been released. 図２０（Ａ）及び図２０（Ｂ）は、上記各実施例の変形例（第４実施例）に係る可動フック式つかみ金具の構造を示す側面図及び部分拡大側面図であり、つかみ金具を横架材に係止した状態が示されている。Figures 20(A) and 20(B) are a side view and a partially enlarged side view showing the structure of a movable hook-type gripping fitting relating to a modified example (fourth embodiment) of each of the above-mentioned embodiments, and show the state in which the gripping fitting is engaged with a cross member. 図２１（Ａ）及び図２１（Ｂ）は、図２０に示すつかみ金具を横架材から僅かに上昇させた状態を示すつかみ金具の側面図及び部分拡大側面図である。21(A) and 21(B) are a side view and a partially enlarged side view of the gripping fitting shown in FIG. 20, showing the state in which the gripping fitting is slightly elevated from the cross member. 図２２（Ａ）及び図２２（Ｂ）は、図２１に示すつかみ金具を横架材に対して斜め上方に移動させた状態を示すつかみ金具の側面図及び部分拡大側面図である。22(A) and 22(B) are a side view and a partially enlarged side view of the gripping fitting shown in FIG. 21, showing the state in which the gripping fitting has been moved obliquely upward relative to the cross member. 図２３（Ａ）及び図２３（Ｂ）は、従来の床付き布枠を建枠の横架材から取り外す過程を示す仮設足場の側面図である。23(A) and 23(B) are side views of a temporary scaffolding showing the process of removing a conventional floor-attached fabric frame from the cross members of a building frame.

本発明の好適な実施形態において、外れ止め部材又は外れ止め部分は、上記本体部分に一体化し又は固定された固定爪、或いは、本体部分に取付けられた重力式又はセルフロック式の可動爪からなる。上記横架材を受入れるための上記横架材収容域の開口部が、上記横架材係合面の縁部（13d）と、上記外れ止め部材又は外れ止め部分の先端部（5d,12d)との間に形成される。本体部分は、可動フックを回動可能に支持する枢支軸を有し、枢支軸は、横架材の中心軸線と実質的に平行な枢動軸線を有し、可動フックは、その横架材係合面が横架材に押圧されることにより、枢動軸線を中心に上方に回動し、開口部の開口寸法(D2)を拡大する。所望により、枢支軸は、横架材の床材本体側の領域に配置され、或いは、本体部分の先端部に配置される。好ましくは、開口部の開口寸法、即ち、上記縁部（13d）と上記先端部（5d,12d)との離間距離(D2)は、上記着座面が前記横架材に着座したつかみ金具の係止位置において横架材の直径(D1)よりも小さく、可動フックの回動により開口部を拡開した状態において横架材の直径(D1)よりも大きい。更に好ましくは、可動フックの先端下面(13b,68)は、つかみ金具の係止位置(着座面が横架材に着座した状態のつかみ金具の位置)において横架材の中心軸線(Bc)の高さ位置(HL)よりも下方に位置し、可動フックの回動又は面内変位により開口部の開口寸法(D2)を拡大した状態において横架材の中心軸線の高さ位置(HL)と実質的に同一又はこの高さ位置(HL)よりも上方に位置する。 In a preferred embodiment of the present invention, the anti-removal member or anti-removal portion is composed of a fixed claw integrated with or fixed to the main body portion, or a gravity-type or self-locking movable claw attached to the main body portion. An opening of the cross member receiving area for receiving the cross member is formed between the edge (13d) of the cross member engaging surface and the tip (5d, 12d) of the anti-removal member or anti-removal portion. The main body portion has a pivot shaft that rotatably supports the movable hook, and the pivot shaft has a pivot axis substantially parallel to the central axis of the cross member. When the cross member engaging surface is pressed against the cross member, the movable hook rotates upward about the pivot axis, thereby expanding the opening dimension (D2) of the opening. If desired, the pivot shaft is arranged in the area of the cross member on the floor material main body side, or at the tip of the main body portion. Preferably, the opening dimension of the opening, i.e., the distance (D2) between the edge (13d) and the tip (5d, 12d), is smaller than the diameter (D1) of the cross member when the seating surface is seated on the cross member at the engagement position of the gripping metal fitting, and is larger than the diameter (D1) of the cross member when the opening is expanded by the rotation of the movable hook. More preferably, the tip lower surface (13b, 68) of the movable hook is located below the height position (HL) of the central axis (Bc) of the cross member at the engagement position of the gripping metal fitting (the position of the gripping metal fitting when the seating surface is seated on the cross member), and is substantially the same as or above the height position (HL) of the central axis of the cross member when the opening dimension (D2) of the opening is expanded by the rotation or in-plane displacement of the movable hook.

本発明の好適な実施形態によれば、係止位置における可動フックの位置は、可動フックがその自重により横架材の外周面に着座することにより設定され、或いは、スロットの上端部とガイドピンとの係合又は当接等により設定される。外れ止めは、横架材の外周面に接触し又は近接するようにして横架材の下半部外周域に湾曲して延び、平面視における外れ止めと横架材との重なり寸法（β）は、５mm以上且つ１５mm以下の範囲内(例えば、約１０mm)に設定される。 According to a preferred embodiment of the present invention , the position of the movable hook in the locking position is set by the movable hook seating on the outer circumferential surface of the cross member due to its own weight, or by the engagement or abutment of the upper end of the slot with the guide pin, etc. The stopper curves and extends to the outer circumferential region of the lower half of the cross member so as to contact or be close to the outer circumferential surface of the cross member, and the overlap dimension (β) between the stopper and the cross member in a plan view is set within the range of 5 mm to 15 mm (e.g., about 10 mm).

本発明の他の好適な実施形態によれば、可動フックは、上下方向に間隔を隔てた複数のスロット又は長孔と、上下方向に間隔を隔てた複数のスタッド又は支軸とを有する。所望により、スロット又は長孔と、スタッド又は支軸とは、横架材の床材本体側の領域に配置され、或いは、本体部分の先端部に配置される。 According to another preferred embodiment of the invention, the movable hook has a plurality of vertically spaced apart slots or elongated holes and a plurality of vertically spaced apart studs or shafts, optionally located in an area of the cross member facing the flooring body or at a tip of the body portion.

本発明の更に好適な実施形態によれば、横架材収容域(ε)の開口部（λ）は、その開口平面（ω）の垂線方向（μ）を、水平面(HL)に対して傾斜角（θ）をなす方向に配向した構成を有し、傾斜角(θ)は、３０～７０度の角度範囲内、好ましくは、３５～６５度の角度範囲内、更に好ましくは、４０～６０度の角度範囲内の角度に設定される。 According to a further preferred embodiment of the present invention, the opening (λ) of the cross member storage area (ε) has a configuration in which the perpendicular direction (μ) of its opening plane (ω) is oriented in a direction that forms an inclination angle (θ) with respect to the horizontal plane (HL), and the inclination angle (θ) is set within an angle range of 30 to 70 degrees, preferably within an angle range of 35 to 65 degrees, and more preferably within an angle range of 40 to 60 degrees.

本発明に係る仮設床材の好適な実施形態によれば、上記床材本体は、一体成形された単一の床材部品から構成され、或いは、複数の床材部品を並列且つ一体的に連結した複合構造を有する。好ましくは、床材部品は、幅３５０mm以下且つ長さ４００mm以上のアルミ押出形材からなり、押出形材は、作業床又は作業通路の床面を形成する床板部分と、長手方向に延びる補剛リブとを有する。好適には、床材本体は、１２００mm以上、好ましくは、１５００mm以上の長さを有し、つかみ金具の本体部分の基部(11a)が、床材本体の側端部に位置するアルミ押出形材の補剛リブ(24:27:41)に固定される。 According to a preferred embodiment of the temporary flooring of the present invention, the flooring body is composed of a single flooring component molded as one piece, or has a composite structure in which a plurality of flooring components are connected in parallel and integrally. Preferably, the flooring component is made of an aluminum extrusion having a width of 350 mm or less and a length of 400 mm or more, and the extrusion has a floor plate portion that forms the floor surface of the work floor or work passageway, and a stiffening rib extending in the longitudinal direction. Preferably, the flooring body has a length of 1200 mm or more, preferably 1500 mm or more, and the base (11a) of the main body portion of the gripping metal fitting is fixed to the stiffening rib (24:27:41) of the aluminum extrusion located at the side end of the flooring body.

好ましくは、本発明に係る仮設床材は、床材本体の床面を布方向に延長する床面延設部材を更に有し、着座面が前記横架材に着座したつかみ金具の係止位置において、横架材の中心軸線は、床材本体の下面よりも下方の高さ位置に位置し、床材本体の端部は、横架材から１５mm以上の水平距離(St)を隔てて離間し、床面と横架材の頂部との高低差(Sh)は、１５mm以上の寸法に設定され、横架材の直径延長線上の寸法(S1,S2)として１５mm以上の寸法を有する自由空間が前記横架材の外周域に形成される。本発明に係る仮設床材の好適な実施形態によれば、上記水平距離(St)は、５０mm以下、好適には、３０～４０mmの範囲内の寸法（例えば、３５mm）に設定され、上記高低差(Sh)は、５０mm以下、好適には、２０～３０mm範囲内の寸法（例えば、２５mm）に設定され、自由空間の寸法（S1,S2)は、５０mm以下、好適には、２０mm～３５mmの範囲内の寸法（例えば、２５mm）に設定される。好ましくは、床材本体の下面(2b)は、上記横架材収容域を構成する凹所の中心(Bc)よりも上方の高さ位置に位置し、床材本体の下面と中心との高低差(ΔS)は、１５mm以下の寸法（例えば、６mm）に設定される。更に好ましくは、床面延設部材は、床材本体の端部に固定されたアルミ押出形材からなり、床材本体の上面を延長する水平延出板部分(30)と、この水平延出板部分の基端部から垂下する鉛直板部分(31)と、上記横架材の外周面と対向して自由空間を画成する斜行板部分(32)とを有する。鉛直板部分は、床材本体を構成するアルミ押出形材の端面に当接し、押出形材の当て板又はカバープレートを構成する。好適には、斜行板部分は、識別表示として機能する表示具を脱着可能に保持する保持部を有する。 Preferably, the temporary flooring material of the present invention further has a floor extension member which extends the floor surface of the flooring body in the fabric direction, and when the seating surface is in the engagement position of the gripping fitting seated on the cross member, the central axis of the cross member is located at a height position lower than the underside of the flooring body, the end of the flooring body is separated from the cross member by a horizontal distance (St) of 15 mm or more, the height difference (Sh) between the floor surface and the top of the cross member is set to a dimension of 15 mm or more, and a free space having a dimension (S1, S2) of 15 mm or more on the diameter extension line of the cross member is formed in the outer periphery of the cross member. According to a preferred embodiment of the temporary floor material of the present invention, the horizontal distance (St) is set to 50 mm or less, preferably within a range of 30 to 40 mm (e.g., 35 mm), the height difference (Sh) is set to 50 mm or less, preferably within a range of 20 to 30 mm (e.g., 25 mm), and the free space dimensions (S1, S2) are set to 50 mm or less, preferably within a range of 20 to 35 mm (e.g., 25 mm). Preferably, the underside (2b) of the floor material body is located at a height position higher than the center (Bc) of the recess that constitutes the cross member storage area, and the height difference (ΔS) between the underside and center of the floor material body is set to a dimension of 15 mm or less (e.g., 6 mm). More preferably, the floor extension member is made of an aluminum extrusion fixed to the end of the flooring body, and has a horizontal extension plate portion (30) that extends the upper surface of the flooring body, a vertical plate portion (31) that hangs down from the base end of the horizontal extension plate portion, and an inclined plate portion (32) that faces the outer periphery of the cross member to define a free space. The vertical plate portion abuts against the end face of the aluminum extrusion that constitutes the flooring body, and constitutes a backing plate or cover plate for the extrusion. Preferably, the inclined plate portion has a holding portion that detachably holds an indicator that functions as an identification indicator.

本発明の他の好適な実施形態において、上記床材本体は、床材を布枠（梁材及び布材）に組付けた構造を有し、上記つかみ金具は、布枠に取付けられ、床材本体及びつかみ金具は、床付き布枠を構成する。 In another preferred embodiment of the present invention, the flooring body has a structure in which the flooring is assembled to a fabric frame (beam material and fabric material), the gripping metal fittings are attached to the fabric frame, and the flooring body and the gripping metal fittings form a floor-attached fabric frame.

本発明に係る仮設床材の施工方法の好適な実施形態よれば、上記横架材を斜め上方に移動させる前に、上記つかみ金具を僅かに上方に持ち上げ、上記外れ止め部材又は外れ止め部分の横架材係合面と横架材の下半部外周面とを過渡的に近接、当接又は衝合させる工程が採用される。 According to a preferred embodiment of the construction method for temporary flooring of the present invention, before moving the cross member diagonally upward, the gripping metal fitting is lifted slightly upward, and the cross member engagement surface of the anti-slip member or anti-slip portion and the outer peripheral surface of the lower half of the cross member are brought into transitional proximity, contact, or collision.

所望により、仮設床材を仮設構造物の横架材に架設又は懸架するために、仮設床材の少なくとも一方の端部に配置されたつかみ金具を横架材に係止する作業において、外れ止め部材又は外れ止め部分のロック解除操作を行うことなく、仮設床材を斜め下方に移動させてつかみ金具を横架材に接近させることにより、横架材係合面を横架材の上半部外周面に摺接させて可動フックを受動的に上方に回動又は面内変位せしめ、着座面を横架材の上半部外周面に着座させても良い。 If desired, in order to erect or suspend a temporary flooring material on a cross member of a temporary structure, in the operation of engaging the gripping fittings arranged on at least one end of the temporary flooring material with the cross member, the temporary flooring material may be moved diagonally downward to bring the gripping fittings closer to the cross member without performing an unlocking operation on the anti-detachment member or anti-detachment portion, so that the cross member engagement surface comes into sliding contact with the outer peripheral surface of the upper half of the cross member, passively rotating the movable hook upward or displacing in-plane, and the seating surface seating on the outer peripheral surface of the upper half of the cross member.

また、各端部の左右のつかみ金具の外れ止め部材又は外れ止め部分として、重力式セルフロック機構(7,8)を有する可動爪(5)を備えた仮設床材の施工方法によれば、横架材に架設又は懸架された仮設床材を該横架材から撤去するためにつかみ金具を横架材から離脱させる作業において、外れ止め部材又は外れ止め部分のロック解除操作を行うとともに、可動フックを上方に回動又は面内変位させてつかみ金具の開口部(λ)を拡開し、つかみ金具を前記横架材から離間せしめる工程を採用することが可能となる。 In addition, according to the construction method for temporary flooring equipped with movable claws (5) having gravity-type self-locking mechanisms (7, 8) as the anti-detachment members or anti-detachment portions of the left and right gripping metal fittings at each end, in the work of detaching the gripping metal fittings from the cross member in order to remove the temporary flooring erected or suspended on the cross member from the cross member, it is possible to adopt a process in which the anti-detachment member or anti-detachment portion is unlocked and the movable hook is rotated upward or displaced in-plane to widen the opening (λ) of the gripping metal fitting and separate the gripping metal fitting from the cross member.

以下、添付図面を参照して、本発明の好適な実施例について詳細に説明する。 The following describes in detail a preferred embodiment of the present invention with reference to the attached drawings.

図１は、本発明の好適な実施例に係るつかみ金具を備えた仮設床材を全体的に示す斜視図、平面図及び側面図である。図２は、図１に示す仮設床材の縦断面図であり、図３及び図４は、図１に示す仮設床材を構成する押出形材の斜視図、端面図及び底面図である。 Figure 1 shows an overall perspective view, plan view, and side view of a temporary flooring material equipped with gripping fittings according to a preferred embodiment of the present invention. Figure 2 shows a vertical cross-sectional view of the temporary flooring material shown in Figure 1, and Figures 3 and 4 show a perspective view, end view, and bottom view of the extrusion material that constitutes the temporary flooring material shown in Figure 1.

図1（Ａ）には、枠組足場の建枠Ａに支持又は支承された仮設床材１が示されている。建枠Ａは、横架材Ｂ及び脚柱Ｃを一体化し、補剛材Ｄ、Ｅ等によって補強してなる鋼製の枠体である。仮設床材１は、床材本体２を有し、床材本体２の上面（床面）２０は、仮設足場の作業通路又は作業床を構成する。床面延設部材３が、床材本体２の両端部に一体的に取付けられる。図１（Ｂ）及び図１（Ｃ）に示す如く、左右一対の可動爪式つかみ金具４が、床材本体２の一端部に配設され、左右一対の可動フック式つかみ金具１０が、床材本体２の他端部に配設される。つかみ金具４、１０は、床材本体２の端部から布方向又は桁方向に突出する。つかみ金具４、１０の取付け位置は、図１（Ｂ）に示す如く、仮設床材１の平面視鉛直中心軸線に対して１８０度の回転対称の位置である。なお、以下の説明においては、枠組足場の建枠Ａの横架材Ｂに仮設床材１を架設した構成について説明するが、本実施例の仮設床材１は、枠組足場のみならず、楔結合式足場においても横架材（腕木）間に架設し得るように設計されており、従って、枠組足場及び楔結合式足場の各形式の足場において共用又は兼用可能な仮設床材である。 Figure 1 (A) shows a temporary floor material 1 supported or supported by a building frame A of a frame scaffolding. The building frame A is a steel frame body formed by integrating cross members B and pedestals C and reinforcing them with stiffeners D, E, etc. The temporary floor material 1 has a floor material body 2, and the upper surface (floor surface) 20 of the floor material body 2 forms the work passage or work floor of the temporary scaffolding. Floor surface extension members 3 are integrally attached to both ends of the floor material body 2. As shown in Figures 1 (B) and 1 (C), a pair of left and right movable claw-type gripping fittings 4 are arranged at one end of the floor material body 2, and a pair of left and right movable hook-type gripping fittings 10 are arranged at the other end of the floor material body 2. The gripping fittings 4, 10 protrude from the end of the floor material body 2 in the cloth direction or girder direction. As shown in Figure 1 (B), the mounting positions of the gripping fittings 4 and 10 are positions that are rotationally symmetrical at 180 degrees with respect to the vertical central axis of the temporary flooring 1 in a plan view. In the following explanation, the temporary flooring 1 is installed on the cross members B of the building frame A of the frame scaffolding, but the temporary flooring 1 of this embodiment is designed so that it can be installed between the cross members (arms) not only in frame scaffolding but also in wedge-connected scaffolding, and therefore is a temporary flooring that can be used in common or in combination with each type of scaffolding, including frame scaffolding and wedge-connected scaffolding.

仮設床材１は、つかみ金具４、１０を建枠Ａの横架材Ｂに係止することにより、隣り合う建枠Ａの横架材Ｂ間に架設又は懸架される。つかみ金具４、１０は、仮設床材1の荷重を横架材Ｂに伝達する。つかみ金具４は、従来構成のセルフロック式つかみ金具であり、つかみ金具１０は、本発明に従って、後述する外れ止め１２及び可動フック１３(図５)を備える。仮設床材１は、布枠(布材及び梁)を備えておらず、補剛リブ２４～２９（図２）を備えたアルミニウム製又はアルミニウム合金製の上記床材本体２、床面延設部材３及びつかみ金具４、１０から構成される。補剛リブ２４～２９は、鉛直荷重等に抗する曲げ剛性(断面係数等)の向上という点でおいて、床付き布枠の布枠又は布地材に相当する構造要素である。 The temporary floor material 1 is erected or suspended between the horizontal members B of adjacent building frames A by engaging the gripping fittings 4, 10 with the horizontal members B of the building frames A. The gripping fittings 4, 10 transmit the load of the temporary floor material 1 to the horizontal members B. The gripping fittings 4 are self-locking gripping fittings of a conventional configuration, and the gripping fittings 10 are equipped with a slip-stop 12 and a movable hook 13 (Fig. 5) described below in accordance with the present invention. The temporary floor material 1 does not have a fabric frame (fabric material and beams), and is composed of the above-mentioned floor material body 2 made of aluminum or aluminum alloy equipped with stiffening ribs 24-29 (Fig. 2), floor extension member 3, and gripping fittings 4, 10. The stiffening ribs 24-29 are structural elements equivalent to the fabric frame or fabric material of a floor-mounted fabric frame in terms of improving bending rigidity (section modulus, etc.) against vertical loads, etc.

図２に示す如く、床材本体２は、第１押出形材２１及び第２押出形材２２を中央連結部２ａにおいて一体的に連結した構造を有する。図３に示す如く、第１押出形材２１は、補剛用の側縁リブ２４、中間リブ２５及び連結リブ２６を床板部分２１ａに一体成形したアルミ押出形材からなる。図４に示す如く、第２押出形材２２は、補剛用の側縁リブ２７、中間リブ２８及び連結リブ２９を床板部分２２ａに一体成形したアルミ押出形材からなる。側縁リブ２４、２７、中間リブ２５、２８及び連結リブ２６、２９は、幅方向（梁間方向又は腕木方向）に間隔を隔てて並列配置され、互いに平行且つ長手方向（布方向又は桁方向）に延びる。側縁リブ２４、２７の上縁部は、下側に屈曲した屈曲部２４ａ、２７ａを有し、側縁リブ２４、２７の下縁部は、下方に突出した突出部２４ｂ、２７ｂを有する。屈曲部２４ａ、２７ａ及び突出部２４ｂ、２７ｂは、複数の仮設床材１を段積みした状態で互いに係合し、仮設床材１の段積み状態を安定化するためのものであるが、この点ついては、本出願人の出願に係る特願2018-133770号の明細書・図面に詳細に記載されているので、特願2018-133770号明細書・図面を引用することにより、更なる詳細な説明は、省略する。 As shown in Figure 2, the flooring body 2 has a structure in which the first extrusion 21 and the second extrusion 22 are integrally connected at the central connecting portion 2a. As shown in Figure 3, the first extrusion 21 is an aluminum extrusion with stiffening side edge ribs 24, intermediate ribs 25, and connecting ribs 26 integrally molded with the floorboard portion 21a. As shown in Figure 4, the second extrusion 22 is an aluminum extrusion with stiffening side edge ribs 27, intermediate ribs 28, and connecting ribs 29 integrally molded with the floorboard portion 22a. The side edge ribs 24, 27, intermediate ribs 25, 28, and connecting ribs 26, 29 are arranged in parallel at intervals in the width direction (beam direction or arm direction) and extend parallel to each other and in the longitudinal direction (fabric direction or girder direction). The upper edge of the side edge ribs 24, 27 has bent portions 24a, 27a that are bent downward, and the lower edge of the side edge ribs 24, 27 has protruding portions 24b, 27b that protrude downward. The bent portions 24a, 27a and the protruding portions 24b, 27b engage with each other when multiple temporary floor materials 1 are stacked in layers, and are intended to stabilize the stacked state of the temporary floor materials 1. This point is described in detail in the specification and drawings of Japanese Patent Application No. 2018-133770 filed by the applicant, so further detailed explanation will be omitted by citing the specification and drawings of Japanese Patent Application No. 2018-133770.

図２に示す如く、連結リブ２６、２９は、中央連結部２ａにおいて連接され、溶接等の固着手段により一体化される。具体的には、連結リブ２６、２９は、連結リブ２９の突起２９ａを連結リブ２６の溝２６ａに挿入又は嵌入し、連結リブ２６、２９の屈曲部２６ｂ、２９ｂを上下に重ね合わせ、連結リブ２６、２９の鉛直部２６ｃ、２９ｃを突付けることによって連接され、屈曲部２６ｂ、２９ｂを溶接等の固着手段で接合することによって一体化される。 2, the connecting ribs 26, 29 are connected at the central connecting portion 2a and integrated by a fastening means such as welding. Specifically, the connecting ribs 26, 29 are connected by inserting or fitting the protrusion 29a of the connecting rib 29 into the groove 26a of the connecting rib 26, overlapping the bent portions 26b, 29b of the connecting ribs 26, 29 vertically, and butting the vertical portions 26c, 29c of the connecting ribs 26, 29 together, and are integrated by joining the bent portions 26b, 29b by a fastening means such as welding.

本例において、押出形材２１、２２は、幅約２５０mm、高さ約４５mm、長さ約１７００mmの寸法を有する。仮設床材１の全幅は、約５００mmである。なお、本例の仮設床材１は、二体の押出形材２１、２２を並列に連結した構造を有するが、所望により、一体の押出形材のみによって仮設床材１を構成し、或いは、三体以上の押出形材を並列に連結して仮設床材１を構成することも可能である。 In this example, the extrusions 21 and 22 have dimensions of approximately 250 mm in width, approximately 45 mm in height, and approximately 1700 mm in length. The overall width of the temporary flooring 1 is approximately 500 mm. Note that the temporary flooring 1 in this example has a structure in which two extrusions 21 and 22 are connected in parallel, but if desired, the temporary flooring 1 can be made up of only a single extrusion, or three or more extrusions can be connected in parallel to form the temporary flooring 1.

図５（Ａ）及び図５（Ｂ）は、可動爪式つかみ金具４及び可動フック式つかみ金具１０の構成を示す仮設床材１の部分拡大側面図であり、図５（Ｃ）は、可動爪式つかみ金具４の構造を示す斜視図である。図６は、可動フック式つかみ金具１０の構造を示す側面図、端面図及び斜視図であり、図７は、可動フック式つかみ金具１０の平面図、Ｉ－Ｉ線断面図、II－II線断面図及び底面図である。 Figures 5 (A) and 5 (B) are partially enlarged side views of the temporary flooring 1 showing the configuration of the movable claw type gripping fitting 4 and the movable hook type gripping fitting 10, and Figure 5 (C) is a perspective view showing the structure of the movable claw type gripping fitting 4. Figure 6 is a side view, end view, and perspective view showing the structure of the movable hook type gripping fitting 10, and Figure 7 is a plan view, a cross-sectional view along line I-I, a cross-sectional view along line II-II, and a bottom view of the movable hook type gripping fitting 10.

図５（Ａ）及び図５（Ｂ）に示す如く、可動爪式つかみ金具４(以下、「つかみ金具４」という。）は、従来構成のものであり、重力式（セルフロック式）の可動爪からなる外れ止め５と、横架材Ｂの上面に着座して横架材Ｂに係止するつかみ金具本体６(以下、「本体６」という。)とから構成される。図２及び図５（Ａ）に示す如く、本体６の基部６ａが、ボルト孔６ｃ（図５（Ｃ））を貫通するボルト・ナット組立体６ｂによって側縁リブ２４、２７の鉛直部２４ｃ、２７ｃ（図２）に固定される。 As shown in Figures 5(A) and 5(B), the movable claw type gripping fixture 4 (hereinafter referred to as "grip fixture 4") is of a conventional configuration and is composed of a gravity-type (self-locking) movable claw-type anti-detachment device 5 and a gripping fixture main body 6 (hereinafter referred to as "main body 6") that sits on the upper surface of the cross member B and engages with the cross member B. As shown in Figures 2 and 5(A), the base 6a of the main body 6 is fixed to the vertical parts 24c, 27c (Figure 2) of the side edge ribs 24, 27 by a bolt and nut assembly 6b that passes through the bolt hole 6c (Figure 5(C)).

外れ止め５及び本体６は夫々、一体成形されたアルミ製部品からなる。外れ止め５は、湾曲スロット（長孔）７を有し、スロット７を貫通する上下一対の水平スタッド（水平支軸）８が、本体６の側面に水平に突設される。外れ止め５は、常時は、重力下に降下した降下位置（図５（Ａ）及び図５（Ｃ））に位置する。上側のスタッド８は、スロット７の上縁部分を支承し、外れ止め５の係止部５ａは、横架材Ｂの下半部外周面に接触し又は近接する。外れ止め５は、図５（Ａ）に示すように、横架材Ｂの下半部外周域に延び、平面視において外れ止め５と重なり、重なり寸法αは、５mm以上且つ１５mm以下、例えば、約１０mmに設定される。風圧等に起因した仮設床材１の浮き上がり等は、係止部５ａと横架材Ｂとの係合によって阻止される。 The stopper 5 and the main body 6 are each made of an aluminum part that is molded as a single unit. The stopper 5 has a curved slot (long hole) 7, and a pair of upper and lower horizontal studs (horizontal support shafts) 8 that penetrate the slot 7 are horizontally protruded from the side of the main body 6. The stopper 5 is normally in a lowered position (Fig. 5 (A) and Fig. 5 (C)) lowered under gravity. The upper stud 8 supports the upper edge of the slot 7, and the locking portion 5a of the stopper 5 contacts or is close to the outer peripheral surface of the lower half of the cross member B. As shown in Fig. 5 (A), the stopper 5 extends to the outer peripheral area of the lower half of the cross member B and overlaps with the stopper 5 in a plan view, and the overlap dimension α is set to 5 mm or more and 15 mm or less, for example, about 10 mm. The temporary floor material 1 is prevented from floating up due to wind pressure, etc. by the engagement of the locking portion 5a with the cross member B.

円形断面の番線挿通孔９が、本体６の上部を水平に貫通する。所望より、番線（図示せず）を番線挿通孔９に挿通して横架材Ｂ廻りに周回せしめた後、番線を固縛し又は緊締し、これにより、本体６を横架材Ｂに番線固定することができる。 A wire insertion hole 9 with a circular cross section passes horizontally through the top of the main body 6. If desired, a wire (not shown) can be inserted through the wire insertion hole 9 and wrapped around the cross member B, and then the wire can be fastened or tightened to secure the main body 6 to the cross member B.

図５（Ｂ）に示す如く、外れ止め５を手指で上方に押し上げ、下側のスタッド８がスロット７の下縁部分に当接又は衝合すると、外れ止め５の係止部５ａは、横架材Ｂの下半部外周域から退避し、本体６の凹所を下方に開放する。外れ止め５は、この退避位置（図５（Ｂ））において、横架材Ｂに対する仮設床材１の上方変位を許容するので、つかみ金具４を上方に持ち上げて横架材Ｂから離間又は離脱させることができる。 As shown in Figure 5 (B), when the stopper 5 is pushed upward with the fingers and the lower stud 8 abuts or strikes the lower edge of the slot 7, the engaging portion 5a of the stopper 5 retreats from the outer periphery of the lower half of the cross member B, opening the recess in the main body 6 downward. In this retreated position (Figure 5 (B)), the stopper 5 allows the temporary floor material 1 to be displaced upward relative to the cross member B, so the gripping metal fitting 4 can be lifted upward to separate or detach it from the cross member B.

他方、仮設床材１の反対側の端部に配置された可動フック式つかみ金具１０（以下、「つかみ金具１０」という。）は、図５～図７に示す如く、横架材Ｂに係止可能なつかみ金具本体１１（以下、「本体１１」という。）と、本体１１に固定された固定爪からなる外れ止め１２と、枢支軸１４によって枢動可能に支持された下面開口形且つ凹形又はＣ形の平板状可動フック１３とから構成される。本体１１の基部１１ａは、つかみ具４の基部６ａと同様、ボルト孔１１ｃ（図６）を貫通するボルト・ナット組立体１１ｂによって側縁リブ２４、２７の鉛直部２４ｃ、２７ｃ（図２）に取付けられる。本体１１及び外れ止め１２は夫々、一体成形されたアルミ製部品からなる。外れ止め１２は、基部１１ａの近傍において、溶接等の固着手段により本体１１に一体的に接合又は固着される。 On the other hand, the movable hook type gripping fixture 10 (hereinafter referred to as "gripping fixture 10") arranged at the opposite end of the temporary floor material 1 is composed of a gripping fixture main body 11 (hereinafter referred to as "main body 11") that can be engaged with the cross member B, a stopper 12 consisting of a fixed claw fixed to the main body 11, and a flat movable hook 13 with an open bottom and a concave or C-shape that is pivotally supported by a pivot shaft 14, as shown in Figures 5 to 7. The base 11a of the main body 11 is attached to the vertical parts 24c, 27c (Figure 2) of the side edge ribs 24, 27 by a bolt and nut assembly 11b that passes through the bolt hole 11c (Figure 6), just like the base 6a of the gripping tool 4. The main body 11 and the stopper 12 are each made of an aluminum part that is molded as one piece. The stopper 12 is integrally joined or fixed to the main body 11 by a fixing means such as welding near the base 11a.

図６に示すように、枢支軸１４の中心軸線１４ｃは、横架材Ｂの中心軸線Ｂｃと実質的に平行に配向される。可動フック１３は、枢支軸１４の中心軸線１４ｃを中心に回動する。可動フック１３を構造的に安定させ且つ可動フック１３の回動を規制するためのガイドピン１５が本体１１の側面に突設される。ガイドピン１５は、可動フック１３に穿設された湾曲スロット（長孔）１６を貫通する。スロット１６の弧状中心線は、図６（Ａ）に示すとおり、中心軸線１４ｃを曲率中心とする曲率半径ｒの円弧状軌道である。なお、本例において、枢支軸１４は、基部１１ａの近傍に配設されるが、中心軸線Ｂｃの直上の領域において枢支軸１４を本体１１に配置し、或いは、本体１１の先端部１１ｅに枢支軸１４を配置しても良い。 As shown in FIG. 6, the central axis 14c of the pivot shaft 14 is oriented substantially parallel to the central axis Bc of the cross member B. The movable hook 13 rotates around the central axis 14c of the pivot shaft 14. A guide pin 15 for structurally stabilizing the movable hook 13 and restricting the rotation of the movable hook 13 is protruded from the side of the main body 11. The guide pin 15 passes through a curved slot (long hole) 16 drilled in the movable hook 13. As shown in FIG. 6(A), the arc-shaped center line of the slot 16 is an arc-shaped orbit with a curvature radius r and the center of curvature is the central axis 14c. In this example, the pivot shaft 14 is disposed near the base 11a, but the pivot shaft 14 may be disposed in the main body 11 in the area directly above the central axis Bc, or the pivot shaft 14 may be disposed at the tip 11e of the main body 11.

本体１１は、横架材Ｂの上面に着座するように湾曲した湾曲着座面１７を有する。仮設床材１を横架材Ｂの間に架設した状態（図５（Ａ））において、湾曲着座面１７は、横架材Ｂの外周面に着座し、仮設床材１の荷重は、湾曲着座面１７を介して横架材Ｂに伝達する。湾曲着座面１７は、中心軸線Ｂｃの直上の領域において水平な先端部１１ｅの下面１７ａに連続する。所望により、下面１７ａを下方に屈曲させ又は湾曲させるとともに、先端部１１ｅを下方に延設し、先端部１１ｅをフック形態に設計しても良い。このような設計においては、先端部１１ｅの下方延設部分に枢支軸１４を配置することも可能である。 The main body 11 has a curved seating surface 17 that is curved so as to seat on the upper surface of the cross member B. When the temporary flooring 1 is installed between the cross members B (FIG. 5(A)), the curved seating surface 17 seats on the outer peripheral surface of the cross member B, and the load of the temporary flooring 1 is transmitted to the cross member B via the curved seating surface 17. The curved seating surface 17 is continuous with the lower surface 17a of the horizontal tip 11e in the area directly above the central axis Bc. If desired, the lower surface 17a may be bent or curved downward, and the tip 11e may be extended downward, so that the tip 11e is designed in a hook shape. In such a design, it is also possible to place a pivot shaft 14 in the downward extension of the tip 11e.

外れ止め１２は、横架材Ｂの下部外周面に近接するように横架材Ｂの下半部外周域に湾曲して延びる横架材係合面１２ａを有する。仮設床材１を横架材Ｂに架設した状態（図５（Ａ））では、横架材係合面１２ａは横架材Ｂから離間し、横架材係合面１２ａと横架材Ｂの下半部外周面との間には、横架材Ｂに対するつかみ金具１０の上方変位を可能にする隙間又は間隙κが形成される。外れ止め１２は、平面視（図７（Ａ））において横架材Ｂと重なり、水平方向の重なり寸法βは、５mm以上且つ２０mm以下、好ましくは、５mm以上且つ１５mm以下、例えば、約１０mmに設定される。横架材Ｂに対する外れ止め１２の上方変位は、寸法βの重なりに依る横架材係合面１２ａと横架材Ｂとの係合によって阻止される。例えば、風圧等に起因した仮設床材１の浮き上がり現象は、横架材係合面１２ａが横架材Ｂに係合又は衝合することによって阻止される。 The stopper 12 has a cross member engaging surface 12a that curves and extends to the lower half outer periphery of the cross member B so as to approach the lower outer periphery of the cross member B. When the temporary floor material 1 is installed on the cross member B (FIG. 5(A)), the cross member engaging surface 12a is separated from the cross member B, and a gap or gap κ that allows the gripping metal fitting 10 to be displaced upward relative to the cross member B is formed between the cross member engaging surface 12a and the lower half outer periphery of the cross member B. The stopper 12 overlaps with the cross member B in a plan view (FIG. 7(A)), and the horizontal overlap dimension β is set to 5 mm or more and 20 mm or less, preferably 5 mm or more and 15 mm or less, for example, about 10 mm. The upward displacement of the stopper 12 relative to the cross member B is prevented by the engagement between the cross member engaging surface 12a and the cross member B due to the overlap dimension β. For example, the phenomenon of the temporary floor material 1 lifting up due to wind pressure, etc. is prevented by the cross member engagement surface 12a engaging or colliding with the cross member B.

可動フック１３は、横架材Ｂの上部外周面に近接するように横架材Ｂの上半部外周域に湾曲して延びる横架材係合面１３ａを有する。仮設床材１を横架材Ｂに架設した状態（図５（Ａ））では、横架材係合面１３ａは自重により横架材Ｂの上部外周面に接触し又は近接するが、仮設床材１の荷重及びその反力は、横架材係合面１３ａに作用しない。可動フック１３の先端下面１３ｂは、横架材Ｂの中心軸線Ｂｃのレベル（高さ位置）ＨＬよりも僅かに下方に位置しており、レベルＨＬと先端下面１３ｂとの高低差Δｈ１は、好ましくは、１０mm以下（２mm以上）、更に好ましくは、３～７mmの範囲内の寸法、例えば、約５mmに設定される。横架材Ｂに対するつかみ金具１０の水平変位は、湾曲着座面１７又は横架材係合面１３ａと横架材Ｂとの係合又は衝合によって阻止される。 The movable hook 13 has a cross member engaging surface 13a that curves and extends to the upper half outer periphery of the cross member B so as to approach the upper outer periphery of the cross member B. When the temporary floor material 1 is installed on the cross member B (FIG. 5(A)), the cross member engaging surface 13a comes into contact with or approaches the upper outer periphery of the cross member B due to its own weight, but the load of the temporary floor material 1 and its reaction force do not act on the cross member engaging surface 13a. The tip underside 13b of the movable hook 13 is located slightly below the level (height position) HL of the central axis Bc of the cross member B, and the height difference Δh1 between the level HL and the tip underside 13b is preferably set to 10 mm or less (2 mm or more), more preferably a dimension within the range of 3 to 7 mm, for example, about 5 mm. Horizontal displacement of the gripping fixture 10 relative to the cross member B is prevented by the curved seating surface 17 or the cross member engagement surface 13a engaging or colliding with the cross member B.

かくして、横架材Ｂを受入れ可能なつかみ金具１０の横架材収容域ε（図６（Ｄ））が、横架材係合面１２ａ、１３ａ及び湾曲着座面１７によって画成される。横架材収容域εは、横架材Ｂを収容し得る概ねＣ字形断面の下面開口形凹所である。後述するとおり、横架材収容域εの開口部λ（図６（Ｄ））は、レベルＨＬに対して所定角度をなして斜め下方に開放した状態で横架材Ｂを横架材収容域ε内に受入れ且つ横架材Ｂを横架材収容域εから離脱せしめるように構成される。 Thus, the cross member storage area ε (FIG. 6(D)) of the gripping fixture 10 capable of receiving the cross member B is defined by the cross member engagement surfaces 12a, 13a and the curved seating surface 17. The cross member storage area ε is a generally C-shaped cross-sectional, bottom-opening recess capable of receiving the cross member B. As described below, the opening λ (FIG. 6(D)) of the cross member storage area ε is configured to receive the cross member B into the cross member storage area ε and to remove the cross member B from the cross member storage area ε while opening obliquely downward at a predetermined angle with respect to the level HL.

開口部λの開口寸法Ｄ２（図６（Ａ）及び図６（Ｂ））は、横架材Ｂの直径（外径）Ｄ１よりも小さい値に設定される。枠組足場（及び楔結合式足場）では、横架材Ｂの直径Ｄ１は、一般に４２．７mmである。これに対し、開口部λの開口寸法Ｄ２は、４０～３０mmの範囲内（例えば、約３６mm）に設定される。 The opening dimension D2 of the opening λ (Figures 6(A) and 6(B)) is set to a value smaller than the diameter (outer diameter) D1 of the cross member B. In frame scaffolding (and wedge-connected scaffolding), the diameter D1 of the cross member B is generally 42.7 mm. In contrast, the opening dimension D2 of the opening λ is set to a range of 40 to 30 mm (for example, about 36 mm).

開口部λの開口寸法Ｄ２は、横架材係合面１３ａと先端下面１３ｂとの境界部分に位置する可動フック１３の内側縁部（横架材係合面１３ａの縁部）１３ｄと、内側縁部１３ｄと対向する外れ止め１２の先端部１２ｄとの離間距離である。内側縁部１３ｄは、微小曲率半径の曲面であり、内側縁部１３ｄの曲率半径は、好ましくは、８mm以下（１mm以上）、更に好ましくは、２～６mmの範囲内の寸法、例えば、約４～５mmに設定される。先端部１２ｄ及び内側縁部１３ｄによって規定された開口部λの開口平面ωは、水平面ＨＬに対して傾斜しており、開口平面ωの垂線μは、水平面ＨＬに対して傾斜角θをなす方向に配向される。傾斜角θは、４０～６０度の角度範囲内の角度、例えば、５０度に設定される。後述するとおり、内側縁部１３ｄは、横架材Ｂの外周面を摺動し、横架材Ｂの外周面の反力又は反作用を受け、そのカム従動作用又は受圧従動作用により枢支軸１４の中心軸線１４ｃを中心に回動して横架材収容域εの開口部λを比較的大きく開放する。 The opening dimension D2 of the opening λ is the distance between the inner edge 13d (edge of the cross member engagement surface 13a) of the movable hook 13 located at the boundary between the cross member engagement surface 13a and the tip bottom surface 13b, and the tip 12d of the stopper 12 facing the inner edge 13d. The inner edge 13d is a curved surface with a small radius of curvature, and the radius of curvature of the inner edge 13d is preferably set to a dimension within the range of 8 mm or less (1 mm or more), more preferably 2 to 6 mm, for example, about 4 to 5 mm. The opening plane ω of the opening λ defined by the tip 12d and the inner edge 13d is inclined with respect to the horizontal plane HL, and the perpendicular line μ of the opening plane ω is oriented in a direction that forms an inclination angle θ with respect to the horizontal plane HL. The inclination angle θ is set to an angle within the range of 40 to 60 degrees, for example, 50 degrees. As described below, the inner edge 13d slides on the outer peripheral surface of the cross member B, receives a reaction force or reaction from the outer peripheral surface of the cross member B, and rotates around the central axis 14c of the pivot shaft 14 due to its cam follower action or pressure follower action, opening the opening λ of the cross member storage area ε relatively widely.

可動フック１３は、常時は、重力下に降下した降下位置（図５及び図６）に位置し、ガイドピン１５は、スロット１６の上縁部分を支承し、横架材係合面１３ａは、自重により横架材Ｂの上半部外周面に接触し又は近接する。従って、開口部λの開口寸法Ｄ２は、常時は、横架材Ｂの直径Ｄ１よりも小さい寸法を重力下に維持する。他方、可動フック１３は、枢支軸１４の中心軸線１４ｃを中心に回動し、図６（Ａ）に破線で示すように上方に変位するので、つかみ金具１０を横架材Ｂに係止する際、横架材Ｂの上向き反力を受けて上方に回動し、開口部λを拡開する。 The movable hook 13 is normally in a lowered position (Figs. 5 and 6) lowered under gravity, the guide pin 15 supports the upper edge of the slot 16, and the cross member engagement surface 13a contacts or approaches the outer peripheral surface of the upper half of the cross member B due to its own weight. Therefore, the opening dimension D2 of the opening λ is normally maintained under gravity at a dimension smaller than the diameter D1 of the cross member B. On the other hand, the movable hook 13 rotates around the central axis 14c of the pivot shaft 14 and displaces upward as shown by the dashed line in Fig. 6(A). Therefore, when the gripping fitting 10 is engaged with the cross member B, it rotates upward in response to the upward reaction force of the cross member B, widening the opening λ.

従って、仮設床材１を横架材Ｂ間に架設又は懸架する工程では、つかみ金具１０の先端下面１３ｂを横架材Ｂ上に載置することにより、横架材Ｂに当接した可動フック１３を図６（Ａ）に破線で示すように過渡的に上方に回動させて開口部λの開口を過渡的に拡開し、横架材Ｂを横架材収容域ε内に収容すれば良い。このように横架材Ｂを横架材収容域εに収容する挙動に伴って、開口部λの開口が初期の開口寸法Ｄ２に縮小する。 Therefore, in the process of erecting or suspending the temporary floor material 1 between the cross members B, the lower end surface 13b of the gripping fitting 10 is placed on the cross member B, and the movable hook 13 that is in contact with the cross member B is rotated upwards transiently as shown by the dashed line in Figure 6 (A), transiently widening the opening of the opening λ, and the cross member B is accommodated within the cross member accommodation area ε. In this way, as the cross member B is accommodated in the cross member accommodation area ε, the opening of the opening λ is reduced to the initial opening dimension D2.

かくして横架材収容域εに収容された横架材Ｂは、つかみ金具１０の横架材係合面１２ａ、１３ａ及び湾曲着座面１７によって上方変位及び水平変位を拘束される。このようにつかみ金具１０を横架材Ｂ上に拘束した状態で、図６（Ａ）に示す係合離脱方向ηの方向（斜め上方）につかみ金具１０を移動させる力をつかみ金具１０に与えると、開口部λの開口が拡開し、横架材Ｂを横架材収容域εから離脱させることができる。以下、仮設床材１の撤去作業について説明する。 Thus, the cross member B accommodated in the cross member accommodation area ε is restrained from upward and horizontal displacement by the cross member engagement surfaces 12a, 13a and the curved seating surface 17 of the gripping fixture 10. When the gripping fixture 10 is restrained on the cross member B in this manner and a force is applied to the gripping fixture 10 to move the gripping fixture 10 in the engagement/disengagement direction η (diagonally upward) shown in FIG. 6(A), the opening of the opening λ widens, and the cross member B can be removed from the cross member accommodation area ε. The removal work of the temporary floor material 1 will be described below.

図８は、仮設床材１の撤去作業と関連したつかみ金具１０の作動態様を段階的に示す側面図である。 Figure 8 is a side view showing the stages of operation of the gripping fixture 10 in relation to the removal of the temporary floor material 1.

図８（Ａ）には、つかみ金具１０を横架材Ｂに係止した状態(係止位置)が示されている。この状態では、本体１１の湾曲着座面１７は、横架材Ｂの外周面に着座し、仮設床材１の鉛直荷重は、湾曲着座面１７を介して横架材Ｂに伝達する。ガイドピン１５は、スロット１６の上端部に位置し、横架材係合面１３ａは横架材Ｂの上部外周面に接触し又は近接する。開口部λの開口寸法Ｄ２は、横架材Ｂの直径（外径）Ｄ１よりも小さい。横架材Ｂに対するつかみ金具１０の水平変位は、横架材Ｂと湾曲着座面１７又は横架材係合面１３ａとの係合又は衝合によって阻止される。図８（Ａ）に上向き鉛直の外力Ｆｖで示すようにつかみ金具１０を持ち上げると、つかみ金具１０は、図８（Ｂ）に示す如く、横架材Ｂに対して上方に変位し、横架材Ｂの下半部外周面が外れ止め１２の横架材係合面１２ａに近接、衝合又は当接する。この状態では、湾曲着座面１７と横架材Ｂとの間に高さ寸法Δｈ２(Δｈ２≧Δｈ１)の間隙が形成される。図８（Ｂ）に水平外力Ｆｈで示すようにつかみ金具１０を更に水平変位（ΔＬ１）させると、横架材Ｂは可動フック１３の内側縁部１３ｄ又はその近傍の部分を押圧し、可動フック１３は、横架材Ｂの外周面の反力又は反作用を受け、内側縁部１３ｄ又はその近傍の部分のカム従動作用又は受圧従動作用により、枢支軸１４の中心軸線１４ｃを中心に上方に受動的に回動する。この結果、間隙寸法Δｈ３が拡大するとともに、開口部λの開口寸法Ｄ２が横架材Ｂの直径（外径）Ｄ１よりも大きい寸法に拡大する。従って、外力Ｆｖ、Ｆｈの合力として矢印η方向（係合離脱方向）の外力Ｆη（図８（Ｃ））がつかみ金具１０に作用すると、内側縁部１３ｄ及びその近傍の部分は、矢印η方向の直線的な運動を可動フック１３の回転運動に変換するカム従動面又は受圧従動面として機能するので、つかみ金具１０は、図８（Ｃ）及び図８（Ｄ）に示す如く、横架材Ｂから離脱し、斜め上方に移動する。このようなつかみ金具１０の作動態様は、つかみ金具１０の手動ロック解除の操作を格別に要しない仮設床材１の撤去作業を可能にする。 Figure 8 (A) shows the state (engaged position) in which the gripping fixture 10 is engaged with the cross member B. In this state, the curved seating surface 17 of the main body 11 seats on the outer peripheral surface of the cross member B, and the vertical load of the temporary floor material 1 is transmitted to the cross member B via the curved seating surface 17. The guide pin 15 is located at the upper end of the slot 16, and the cross member engagement surface 13a contacts or is close to the upper outer peripheral surface of the cross member B. The opening dimension D2 of the opening λ is smaller than the diameter (outer diameter) D1 of the cross member B. Horizontal displacement of the gripping fixture 10 relative to the cross member B is prevented by engagement or collision between the cross member B and the curved seating surface 17 or the cross member engagement surface 13a. When the gripping fixture 10 is lifted as shown by an upward vertical external force Fv in Fig. 8(A), the gripping fixture 10 is displaced upward relative to the cross member B as shown in Fig. 8(B), and the outer peripheral surface of the lower half of the cross member B approaches, collides with, or comes into contact with the cross member engagement surface 12a of the stopper 12. In this state, a gap of height dimension Δh2 (Δh2 ≧ Δh1) is formed between the curved seating surface 17 and the cross member B. When the gripping fixture 10 is further displaced horizontally (ΔL1) as shown by a horizontal external force Fh in Fig. 8(B), the cross member B presses the inner edge 13d of the movable hook 13 or a portion nearby, and the movable hook 13 passively rotates upward about the central axis 14c of the pivot shaft 14 due to the cam-following action or pressure-following action of the inner edge 13d or a portion nearby. As a result, the gap dimension Δh3 increases, and the opening dimension D2 of the opening λ increases to a dimension larger than the diameter (outer diameter) D1 of the cross member B. Therefore, when an external force Fη (FIG. 8(C)) in the direction of the arrow η (engagement/disengagement direction) acts on the gripping fitting 10 as a resultant force of the external forces Fv and Fh, the inner edge 13d and its neighboring parts function as a cam driven surface or a pressure driven surface that converts the linear motion in the direction of the arrow η into the rotational motion of the movable hook 13, so that the gripping fitting 10 disengages from the cross member B and moves obliquely upward as shown in FIG. 8(C) and FIG. 8(D). This operating mode of the gripping fitting 10 makes it possible to remove the temporary floor material 1 without requiring a special operation to manually unlock the gripping fitting 10.

図９は、仮設床材１の撤去作業の作業手順を段階的に示す側面図であり、図１０は、従来構造のつかみ金具を両端部に備えた床付き布枠（比較例）の撤去作業の作業手順を段階的に示す側面図である。本発明と従来技術との相違に関する理解を容易にするため、仮設床材１の撤去作業について説明する前に、比較例に係る床付き布枠の撤去作業について、図１０を参照して説明する。 Figure 9 is a side view showing the steps of the procedure for removing the temporary flooring 1, and Figure 10 is a side view showing the steps of the procedure for removing a floor-mounted cloth frame (comparative example) that has conventional gripping fittings at both ends. To facilitate understanding of the differences between the present invention and the prior art, before explaining the removal of the temporary flooring 1, the removal of the floor-mounted cloth frame of the comparative example will be explained with reference to Figure 10.

図１０（Ａ）には、従来構造のつかみ金具１０４によって仮設足場の横架材Ｂに支持された床付き布枠１００が示されている。床付き布枠１００は、床材１０１、布材１０２及び梁材（はり材）１０３を一体的に組み付けてなる鋼製の仮設部材である。左右一対のつかみ金具１０４が左右の布材１０２の両端部に一体的に取付けられており、従って、実質的に同じ構造を有するつかみ金具１０４が、床付き布枠１００の４つの角部に夫々配設されている。図１０（Ｂ）に示す如く、各つかみ金具１０４は、重力式可動爪からなる外れ止め１０５と、横架材Ｂに着座可能なフック本体１０６とから構成される。外れ止め１０５は、湾曲したスロット（長孔）１０７を有し、フック本体に水平に固定されたスタッド（支軸）１０８がスロット１０７を貫通する。各つかみ金具１０４の外れ止め１０５は、横架材Ｂの下半部外周域に延び、フック本体１０６の上方変位を阻止する降下位置（以下、「係留位置」という。）に位置する。外れ止め１０５は、係留位置において、風圧等に起因した床付き布枠１００の浮き上がり等を防止する。なお、図１０には、前述の特許文献５に記載された構造及び形態を有する外れ止め１０５が例示されている。 Figure 10 (A) shows a floor-attached cloth frame 100 supported on a cross member B of a temporary scaffolding by a conventional structure of gripping metal fittings 104. The floor-attached cloth frame 100 is a temporary steel member formed by integrally assembling a floor material 101, a cloth material 102, and a beam material (beam material) 103. A pair of left and right gripping metal fittings 104 are integrally attached to both ends of the left and right cloth materials 102, and therefore gripping metal fittings 104 having substantially the same structure are disposed at each of the four corners of the floor-attached cloth frame 100. As shown in Figure 10 (B), each gripping metal fitting 104 is composed of a slip stopper 105 consisting of a gravity-type movable claw and a hook body 106 that can be seated on the cross member B. The slip stopper 105 has a curved slot (long hole) 107, and a stud (support shaft) 108 fixed horizontally to the hook body passes through the slot 107. The stopper 105 of each gripping fixture 104 extends to the outer periphery of the lower half of the cross member B and is located in a lowered position (hereinafter referred to as the "mooring position") that prevents the hook body 106 from moving upward. In the mooring position, the stopper 105 prevents the floor-mounted cloth frame 100 from floating up due to wind pressure, etc. Figure 10 shows an example of the stopper 105 having the structure and shape described in the aforementioned Patent Document 5.

仮設足場の解体撤去時等に床付き布枠１００を横架材Ｂから撤去する場合には、図１０（Ｂ）に矢印で示す如く、一端部（図１０において左側の端部）の外れ止め１０５を手指で上方に変位させ、図１０（Ｃ）に示す如く、フック本体１０６の下面を開放し（以下、この位置を「開放位置」という。）、フック本体１０６を上方変位させる。図１０（Ｃ）に矢印で示すように床付き布枠１００の端部を上方に持ち上げた後、図１０（Ｄ）及び図１０（Ｅ）に示すように外れ止め１０５を手指で下方に変位させると、外れ止め１０５の下端部が横架材Ｂの上面に着座し、床付き布枠１００の端部が横架材Ｂによって支持又は支承される。この状態では、他端部（図１０において右側の端部）の外れ止め１０５は、依然として係留位置に位置する（図１０（Ｆ））。 When the floor-mounted cloth frame 100 is removed from the cross member B, for example when the scaffolding is dismantled and removed, the stopper 105 at one end (the end on the left in FIG. 10) is displaced upward with the fingers as shown by the arrow in FIG. 10(B), and the bottom surface of the hook body 106 is opened as shown in FIG. 10(C) (hereinafter, this position is referred to as the "open position"), and the hook body 106 is displaced upward. After lifting the end of the floor-mounted cloth frame 100 upward as shown by the arrow in FIG. 10(C), the stopper 105 is displaced downward with the fingers as shown in FIG. 10(D) and FIG. 10(E), so that the bottom end of the stopper 105 rests on the top surface of the cross member B, and the end of the floor-mounted cloth frame 100 is supported or supported by the cross member B. In this state, the stopper 105 at the other end (the end on the right in FIG. 10) is still in the mooring position (FIG. 10(F)).

作業者が床付き布枠１００の他端部に移動し、図１０（Ｆ）に矢印で示すように他端部の外れ止め１０５を手指で開放位置に変位させ、図１０（Ｇ）に矢印で示すように床付き布枠１００の端部を上方に持ち上げると、床付き布枠１００は、図１０（Ｈ）に示す如く、横架材Ｂから完全に離脱する。作業者は、図１０（Ｈ）に矢印で示すように床付き布枠１００を全体的に持ち上げ、或いは、傾倒させ、これにより、床付き布枠１００を横架材Ｂから撤去することができる。 When the worker moves to the other end of the floor-mounted cloth frame 100, displaces the stopper 105 at the other end to the open position with his/her fingers as shown by the arrow in FIG. 10(F), and lifts the end of the floor-mounted cloth frame 100 upward as shown by the arrow in FIG. 10(G), the floor-mounted cloth frame 100 is completely detached from the cross member B as shown in FIG. 10(H). The worker lifts or tilts the entire floor-mounted cloth frame 100 as shown by the arrow in FIG. 10(H), and can thereby remove the floor-mounted cloth frame 100 from the cross member B.

このような従来の床付き布枠１００を使用した場合、作業者は、床付き布枠１００の端部間で移動し、各端部の外れ止め１０５を手指で開放位置に変位させる手動ロック解除操作を実施しなければならない。このような端部間の移動の間、作業者は、床付き布枠１００の姿勢及び位置等の安定状態を維持しなければならず、これは、従来より、作業上の負担又は負荷として作業者に意識又は認識されていた。これに対し、本実施例に係る仮設床材１のつかみ金具１０は、以下に説明するとおり、一方の端部の外れ止め１０５を操作する必要をなくし、作業上の負担又は負荷を大幅に軽減する。 When using such a conventional floor-mounted cloth frame 100, the worker must move between the ends of the floor-mounted cloth frame 100 and perform a manual unlocking operation to displace the anti-slip stopper 105 at each end to the open position with his or her fingers. During such movement between the ends, the worker must maintain a stable state of the posture and position of the floor-mounted cloth frame 100, which has traditionally been recognized as a burden or load on the worker. In contrast, the gripping fitting 10 of the temporary floor material 1 according to this embodiment, as described below, eliminates the need to operate the anti-slip stopper 105 at one end, significantly reducing the burden or load on the worker.

本発明に係る仮設床材１の撤去作業の過程又は工程が図９に示されている。前述の如く、仮設床材１は、左右一対の可動爪式つかみ金具４を床材本体２の一端部に配設するとともに、左右一対の可動フック式つかみ金具１０を床材本体２の他端部に配設した構成を有する。可動爪式つかみ金具４は、図１０に示すつかみ金具１０４と概ね同等の構造を有するが、可動フック式つかみ金具１０は、前述の如く、本体１１に鉛直・水平な外力Ｆｖ、Ｆｈ（図８）、或いは、矢印η方向（係合離脱方向）の外力Ｆη（図８）をつかみ金具１０に作用せしめることにより、ロック解除のための手動操作を行うことなく、横架材Ｂから離脱させることができるように構成されている。 The process or steps of the removal work of the temporary floor material 1 according to the present invention are shown in Figure 9. As described above, the temporary floor material 1 has a configuration in which a pair of movable claw-type gripping fittings 4 on the left and right are arranged at one end of the floor material main body 2, and a pair of movable hook-type gripping fittings 10 on the left and right are arranged at the other end of the floor material main body 2. The movable claw-type gripping fittings 4 have a structure roughly equivalent to the gripping fittings 104 shown in Figure 10, but the movable hook-type gripping fittings 10 are configured so that they can be detached from the cross member B without manual operation for unlocking by applying a vertical or horizontal external force Fv, Fh (Figure 8) to the main body 11, or an external force Fη (Figure 8) in the direction of the arrow η (engagement and disengagement direction) to the gripping fittings 10, as described above.

仮設足場の解体撤去時等に仮設床材１を横架材Ｂから取り外す場合、図９（Ｂ）に矢印で示す如く、つかみ金具４の外れ止め５を手指で上方に押し上げ、図９（Ｄ）に示す開放位置に変位させると、図９（Ｄ）及び図９（Ｇ）に矢印で示すように本体６を上方変位させることができる。つかみ金具１０は、横架材Ｂ廻りに回転するので、つかみ金具４の近傍において仮設床材１の端部を手指で押し上げると、仮設床材１は、図９（Ｅ）に示すように全体的に傾斜する。仮設床材１は、２～５度程度、例えば、３度程度の傾斜角をなして傾斜すれば良い。図９（Ｆ）に示す如く、この状態でつかみ金具１０を係合離脱方向ηに移動させると、つかみ金具１０は、前述の作動態様（図８（Ｂ）～図８（Ｄ））により、図９（Ｉ）に示すように横架材Ｂから離脱する。 When removing the temporary flooring 1 from the cross member B, such as when dismantling and removing the temporary scaffolding, the stopper 5 of the gripping metal fitting 4 is pushed upward with the fingers as shown by the arrow in Figure 9 (B) and displaced to the open position shown in Figure 9 (D), and the main body 6 can be displaced upward as shown by the arrow in Figures 9 (D) and 9 (G). The gripping metal fitting 10 rotates around the cross member B, so when the end of the temporary flooring 1 is pushed up with the fingers near the gripping metal fitting 4, the temporary flooring 1 will be inclined overall as shown in Figure 9 (E). The temporary flooring 1 should be inclined at an angle of about 2 to 5 degrees, for example, about 3 degrees. As shown in Figure 9 (F), when the gripping metal fitting 10 is moved in the engagement/disengagement direction η in this state, the gripping metal fitting 10 will be disengaged from the cross member B as shown in Figure 9 (I) due to the above-mentioned operating mode (Figures 8 (B) to 8 (D)).

即ち、図９（Ｅ）～図９（Ｇ）に矢印で示すように仮設床材１を全体的に斜め上方に移動させると、つかみ金具１０が横架材Ｂとの係合を円滑に解き、図９（Ｉ）に示すようにつかみ金具１０が横架材Ｂから完全に離脱するので、作業者は、図９（Ｈ）に示す如く、仮設床材１を全体的に持ち上げ、或いは、傾倒させ、これにより、仮設床材１を横架材Ｂから撤去することができる。 In other words, when the temporary flooring 1 is moved diagonally upward as shown by the arrows in Figures 9(E) to 9(G), the gripping fittings 10 smoothly disengage from the cross member B, and as shown in Figure 9(I), the gripping fittings 10 are completely removed from the cross member B. Then, the worker can lift or tilt the temporary flooring 1 as a whole, as shown in Figure 9(H), thereby removing it from the cross member B.

かくして、本実施例の仮設床材１によれば、作業者は、つかみ金具４を解放して仮設床材１の端部を若干押し上げ且つ仮設床材１を僅かに傾斜させた後、仮設床材１を斜め上方（係合離脱方向）に移動させることにより、仮設床材１を撤去することができ、従って、仮設床材１を若干持ち上げた状態で仮設床材１の端部間を移動して両端部のつかみ金具１０の手動ロック解除操作を行う煩雑な作業を要しない。このため、作業者の労力が大幅に低減し、作業上の負担又は負荷が大幅に軽減する。 Thus, with the temporary flooring 1 of this embodiment, the worker can remove the temporary flooring 1 by releasing the gripping fittings 4, slightly pushing up the ends of the temporary flooring 1 and tilting it slightly, and then moving the temporary flooring 1 diagonally upwards (in the direction of disengagement). Therefore, there is no need for the complicated task of moving between the ends of the temporary flooring 1 while lifting it slightly and manually unlocking the gripping fittings 10 at both ends. This significantly reduces the worker's labor and the burden or load on the worker.

次に、図１１を参照して仮設床材１の床面延設部材３の構成について説明する。図１１は、床面延設部材３の構造を示す斜視図及び縦断面図である。 Next, the configuration of the floor extension member 3 of the temporary floor material 1 will be described with reference to Figure 11. Figure 11 is a perspective view and a vertical cross-sectional view showing the structure of the floor extension member 3.

床面延設部材３は、床材本体２と同じく、アルミ押出形材からなり、溶接等の固着手段によって仮設床材２の端部に固定される。床面延設部材３は、床材本体２の上面２０を延長する水平延出板３０と、水平延出板３０から垂下する鉛直板３１と、横架材Ｂの外周面と対向する斜行板３２と、表示具９０を保持する保持部３４と、床面延設部材３の中空部に配設された補剛部材３５とを有する。鉛直板３１は、アルミ押出形材の端面の当て板又はカバープレートとして機能する。斜行板３２は、水平延出板３０の先端部と鉛直板３１の下端部とを一体的に連結し、補剛部材３５は、床面延設部材３の剛性を向上するように水平延出板３０及び鉛直板３１と保持部３４とを一体的に連結する。 The floor extension member 3 is made of aluminum extrusion material, like the floor material body 2, and is fixed to the end of the temporary floor material 2 by a fastening means such as welding. The floor extension member 3 has a horizontal extension plate 30 that extends the upper surface 20 of the floor material body 2, a vertical plate 31 that hangs down from the horizontal extension plate 30, an inclined plate 32 that faces the outer peripheral surface of the cross member B, a holding part 34 that holds the display device 90, and a stiffening member 35 arranged in the hollow part of the floor extension member 3. The vertical plate 31 functions as a backing plate or cover plate for the end surface of the aluminum extrusion material. The inclined plate 32 integrally connects the tip of the horizontal extension plate 30 and the lower end of the vertical plate 31, and the stiffening member 35 integrally connects the horizontal extension plate 30, the vertical plate 31, and the holding part 34 to improve the rigidity of the floor extension member 3.

着色樹脂の一体成形品からなる着脱可能な表示具９０が保持部３４に装着される。表示具９０は、表示部９１、係留部９２及び連結部９３を有する。表示部９１は、仮設床材１の製造者、ユーザー、種類、型等の任意の情報を色、或いは、表面の文字、図形等によって表示する。表示部９１は、断面長方形の帯状部材であり、床面延設部材３の長手方向に延在する。係留部９２は、保持部３４の中空部３６内に挿入され、連結部９３は、保持部３４の狭小開口部３７を貫通し、係留部９１及び表示具９０を相互連結する。表示具９０を交換する場合には、既存の表示具９０の表示部９１を手指で引っ張って係留部９２を中空部３６から抜き出し、他の表示具９０の係留部９２を中空部３６内に挿入すれば良い。 A removable indicator 90 made of a one-piece molded product of colored resin is attached to the holding part 34. The indicator 90 has an indicator part 91, a mooring part 92, and a connecting part 93. The indicator part 91 displays any information such as the manufacturer, user, type, model, etc. of the temporary floor material 1 by color or by characters, figures, etc. on the surface. The indicator part 91 is a strip-shaped member with a rectangular cross section, and extends in the longitudinal direction of the floor extension member 3. The mooring part 92 is inserted into the hollow part 36 of the holding part 34, and the connecting part 93 passes through the narrow opening 37 of the holding part 34 to interconnect the mooring part 91 and the indicator 90. When replacing the indicator 90, the indicator part 91 of the existing indicator 90 is pulled with the fingers to pull the mooring part 92 out of the hollow part 36, and the mooring part 92 of the other indicator 90 is inserted into the hollow part 36.

図１１（Ｂ）に示す如く、床面延設部材３は、床材本体２の端部から比較的大きく突出し、床面延出部材３の先端部は、隣接する仮設床材１の床面延出部材３（破線で示す）の先端部に近接する。このため、布方向（長手方向）に隣接する床材本体２同士を比較的大きく離間させることができる。本例において、斜行板３２及び横架材Ｂは、直径方向の距離Ｓ１、Ｓ２を隔てて離間しており、横架材Ｂ廻りに延在する比較的大きな自由空間Ｓが斜行板３２と横架材Ｂとの間に形成される。距離Ｓ１、Ｓ２は、１５mm～５０mmの範囲内、好適には、２０mm～３５mmの範囲内（例えば、約２５mm）に設定される。このような自由空間Ｓを形成するため、床材本体２の下面２ｂは、横架材Ｂの中心Ｂｃ（本体６、１１の凹所中心）よりも上方に位置し、下面２ｂと中心Ｂｃとの高低差ΔＳは、１５mm以下、好ましくは、３～１０mmの範囲内（例えば、６mm）に設定される。また、床材本体２の上面２０と横架材Ｂの頂部Ｂａとの高低差Ｓｈは、１５mm～５０mmの範囲内、好適には、２０～３０mm（例えば約２５mm）に設定され、床材本体２の端面と横架材Ｂとの水平離間距離Ｓｔは、１５mm～５０mmの範囲内、好適には、３０～４０mmの範囲内（例えば約３５mm）に設定される。自由空間Ｓは、横架材Ｂに係止又は係合する部材と、仮設床材１との位置的又は物理的干渉を防止するクリアランス（隙間）として機能する。例えば、仮設階段のフック部（図示せず）や、強化方杖等の補剛材の係留金具（図示せず）は、自由空間Ｓの形成により、床材本体２及び床面延設部材３と位置的又は物理的に干渉することなく、比較的容易に横架材Ｂに係止又は係合することができる。また、このようなクリアランスの形成により、隣り合う仮設床材１の端面間において作業床又は作業通路が分断されるが、前述のとおり、床面延設部材３は、床材本体２の上面（床面）２０を延長し、隣接する仮設床材１同士の間に実質的な隙間が形成されるのを防止する。 As shown in Fig. 11 (B), the floor extension member 3 protrudes relatively far from the end of the flooring body 2, and the tip of the floor extension member 3 is close to the tip of the floor extension member 3 (shown by a dashed line) of the adjacent temporary flooring 1. This allows the flooring bodies 2 adjacent in the fabric direction (longitudinal direction) to be spaced relatively far apart. In this example, the diagonal plate 32 and the cross member B are spaced apart by diametric distances S1 and S2, and a relatively large free space S extending around the cross member B is formed between the diagonal plate 32 and the cross member B. The distances S1 and S2 are set within a range of 15 mm to 50 mm, preferably within a range of 20 mm to 35 mm (e.g., about 25 mm). In order to form such a free space S, the lower surface 2b of the flooring body 2 is positioned above the center Bc of the cross member B (center of the recess of the main body 6, 11), and the height difference ΔS between the lower surface 2b and the center Bc is set to 15 mm or less, preferably within the range of 3 to 10 mm (for example, 6 mm). The height difference Sh between the upper surface 20 of the flooring body 2 and the top Ba of the cross member B is set to a range of 15 mm to 50 mm, preferably 20 to 30 mm (for example, about 25 mm), and the horizontal separation distance St between the end face of the flooring body 2 and the cross member B is set to a range of 15 mm to 50 mm, preferably 30 to 40 mm (for example, about 35 mm). The free space S functions as a clearance (gap) that prevents positional or physical interference between the member that engages or engages with the cross member B and the temporary flooring 1. For example, the hooks (not shown) of the temporary stairs and the anchoring fittings (not shown) of stiffening materials such as reinforced knee braces can be relatively easily engaged or locked to the cross member B without positionally or physically interfering with the flooring body 2 and the floor extension member 3 due to the formation of the free space S. In addition, the formation of such clearances divides the work floor or work passage between the end faces of adjacent temporary flooring materials 1, but as mentioned above, the floor extension member 3 extends the upper surface (floor surface) 20 of the flooring body 2, preventing the formation of substantial gaps between adjacent temporary flooring materials 1.

図１２は、本発明の他の好適な実施例に係る仮設床材を全体的に示す斜視図及び平面図であり、図１３は、図１２に示す仮設床材の側面図及び部分破断拡大側面図である。図１４は、本実施例の仮設床材を構成する押出形材を示す斜視図、平面図及び側面図であり、図１５は、押出形材の拡大端面図及び部分破断拡大側面図である。図１６は、左右一対の押出形材をジョイント部材によって連結する態様を概念的に示す正面図であり、図１７（Ａ）は、左右一対の押出形材をジョイント部材によって連結してなる仮設床材の構成（フルサイズ）を示す縦断面図である。図１７（Ｂ）は、単一の押出形材より構成される仮設床材の構成（ハーフサイズ）を示す縦断面図である。図１８（Ａ）は、単一の押出形材より構成される仮設床材の一端部の構成を示す端面図であり、図１８（Ｂ）は、図１８（Ａ）に示す仮設床材の他端部の構成を示す端面図である。各図において、図１～１１（実施例１）における各構成要素又は構成部材と実質的に同一又は同等の構成要素又は構成部材については、同一の参照符号が付されている。 Figure 12 is a perspective view and a plan view showing the whole of a temporary flooring according to another preferred embodiment of the present invention, and Figure 13 is a side view and a partially cutaway enlarged side view of the temporary flooring shown in Figure 12. Figure 14 is a perspective view, a plan view, and a side view showing the extrusions constituting the temporary flooring of this embodiment, and Figure 15 is an enlarged end view and a partially cutaway enlarged side view of the extrusions. Figure 16 is a front view conceptually showing a mode in which a pair of left and right extrusions are connected by a joint member, and Figure 17 (A) is a vertical cross-sectional view showing the configuration (full size) of a temporary flooring made of a pair of left and right extrusions connected by a joint member. Figure 17 (B) is a vertical cross-sectional view showing the configuration (half size) of a temporary flooring made of a single extrusion. Figure 18 (A) is an end view showing the configuration of one end of a temporary flooring made of a single extrusion, and Figure 18 (B) is an end view showing the configuration of the other end of the temporary flooring shown in Figure 18 (A). In each figure, components or parts that are substantially the same as or equivalent to the components or parts in Figures 1 to 11 (Example 1) are given the same reference numerals.

図１２及び図１３には、枠組足場の建枠Ａに支持又は支承された仮設床材１’が示されている。仮設床材１’は、床材本体２’を有し、床材本体２’の上面（床面）は、仮設足場の作業通路又は作業床を構成する。前述の実施例と同様、床面延設部材３が、床材本体２’の両端部に一体的に取付けられ、左右一対の可動爪式つかみ金具４が、床材本体２’の一端部に配設され、左右一対の可動フック式つかみ金具１０が、床材本体２’の他端部に配設される。仮設床材１’は、左右一対の押出形材４０をジョイント部材５０によって並列且つ一体的に連結した点において実施例１の仮設床材１と相違するが、この他の基本構成については、実施例１と実質的に同一であるので、重複した説明は、省略する。 12 and 13 show a temporary flooring 1' supported or supported by the building frame A of the scaffolding. The temporary flooring 1' has a flooring body 2', and the upper surface (floor surface) of the flooring body 2' constitutes the work passage or work floor of the temporary scaffolding. As in the above-mentioned embodiment, the floor extension members 3 are integrally attached to both ends of the flooring body 2', a pair of left and right movable claw-type gripping fittings 4 are arranged at one end of the flooring body 2', and a pair of left and right movable hook-type gripping fittings 10 are arranged at the other end of the flooring body 2'. The temporary flooring 1' differs from the temporary flooring 1 of the first embodiment in that a pair of left and right extrusion members 40 are connected in parallel and integrally by joint members 50, but other basic configurations are substantially the same as those of the first embodiment, so repeated explanations will be omitted.

図１４及び図１５に示すように、押出形材４０は、補剛用の側縁リブ４１及び中間リブ４２を床板部分４０ａに一体成形したアルミ押出形材からなる。側縁リブ４１は、連結リブとして機能し、中間リブ４２は、連結機能を備えない補剛リブとして機能する。押出形材４０の幅Ｗ、長さＬ及び厚さＴは、例えば、約２４０mm（Ｗ）、約１８３０mm（Ｌ）及び約３５mm（Ｔ）に設定される。床板部分４０ａの上面には、押出形材４０の長手方向（布方向）に平行に延びる複数の突条４５（図１５（Ａ））が並設されるとともに、押出形材４０の幅方向（梁間方向）に平行に延びる多数の狭小溝４６（図１５（Ｂ））が約１～４mm程度の微小間隔を隔てて刻設される。各側縁リブ４１の両端部には、リベット孔４１ｃが穿設される。図１３（Ｂ）に示す如く、フック本体６、１１の基部６ａ、１１ａが、リベット孔４１ｃに挿通されたリベット６ｃ、１１ｃによって側縁リブ４１に固定される。 As shown in Figures 14 and 15, the extrusion 40 is made of an aluminum extrusion with side edge ribs 41 and intermediate ribs 42 for stiffening integrally molded with the floor plate portion 40a. The side edge ribs 41 function as connecting ribs, and the intermediate ribs 42 function as stiffening ribs without connecting functions. The width W, length L, and thickness T of the extrusion 40 are set to, for example, about 240 mm (W), about 1830 mm (L), and about 35 mm (T). On the upper surface of the floor plate portion 40a, a plurality of protrusions 45 (Figure 15(A)) extending parallel to the longitudinal direction (fabric direction) of the extrusion 40 are arranged in parallel, and a large number of narrow grooves 46 (Figure 15(B)) extending parallel to the width direction (beam direction) of the extrusion 40 are engraved at minute intervals of about 1 to 4 mm. Rivet holes 41c are drilled at both ends of each side edge rib 41. As shown in FIG. 13(B), the bases 6a, 11a of the hook bodies 6, 11 are fixed to the side edge rib 41 by rivets 6c, 11c inserted through rivet holes 41c.

図１５（Ａ）に示すとおり、押出形材４０は、鉛直中心面ＣＬに対して左右対称の形状・輪郭を有する。側縁リブ４１及び中間リブ４２は、幅方向（梁間方向又は腕木方向）に間隔を隔てて並列配置され、互いに平行且つ長手方向（布方向又は桁方向）に延びる。床板部分４０ａの両側の縁には、下側に僅かに屈曲した屈曲部４３が形成される。側縁リブ４１は、床板部分４０ａの各側縁帯域から一体的に垂下する鉛直部４１ａと、鉛直部４１ａに下端から水平に延出する下側フランジ部４１ｂとを有する。下側フランジ部４１ｂの外側の縁には、上側に僅かに屈曲した屈曲部４４が形成される。 As shown in FIG. 15(A), the extrusion profile 40 has a shape and contour that are symmetrical with respect to the vertical center plane CL. The side edge ribs 41 and intermediate ribs 42 are arranged in parallel with a gap in the width direction (beam direction or arm direction) and extend parallel to each other and in the longitudinal direction (fabric direction or girder direction). Bends 43 that are slightly bent downward are formed on both side edges of the floorboard portion 40a. The side edge ribs 41 have vertical portions 41a that hang down integrally from each side edge zone of the floorboard portion 40a, and lower flange portions 41b that extend horizontally from the lower end of the vertical portions 41a. Bends 44 that are slightly bent upward are formed on the outer edge of the lower flange portions 41b.

図１６及び図１７（Ａ）に示す如く、左右一対の押出形材４０がジョイント部材５０を介して一体的に連結される。ジョイント部材５０は、押出形材４０と実質的に同一の全長を有する概ね方形断面のアルミ押出形材である。ジョイント部材５０の各角部には、屈曲部４３、４４を挿入可能又は嵌入可能な溝５３、５４が形成される。図１６及び図１７（Ａ）に示すように、一対の押出形材４０の屈曲部４３、４４がジョイント部材５０の溝５３、５４に挿入又は嵌入され、一対の押出形材４０がジョイント部材５０の各側の側部に夫々連接される。押出形材４０及びジョイント部材５０は、屈曲部４３、４４の部分を溶接等の固着手段でジョイント部材５０に接合することによって一体化する。 As shown in Fig. 16 and Fig. 17(A), a pair of left and right extrusions 40 are connected together via a joint member 50. The joint member 50 is an aluminum extrusion with a roughly rectangular cross section and substantially the same overall length as the extrusion 40. Grooves 53, 54 are formed at each corner of the joint member 50 into which the bent portions 43, 44 can be inserted or fitted. As shown in Fig. 16 and Fig. 17(A), the bent portions 43, 44 of the pair of extrusions 40 are inserted or fitted into the grooves 53, 54 of the joint member 50, and the pair of extrusions 40 are connected to the sides of the joint member 50, respectively. The extrusions 40 and the joint member 50 are integrated together by joining the bent portions 43, 44 to the joint member 50 by a fastening means such as welding.

このように押出形材４０をジョイント部材５０によって一体的に連結してなる床材本体２’は、押出形材４０同士の離間距離Ｗ２を含む幅Ｗ１（＝Ｗ×２＋Ｗ２）の全体寸法（幅寸法）を有する。ジョイント部材５０は、押出形材５０の厚さＴと実質的に同一の高さを有し、離間距離Ｗ２よりも大きい幅Ｗ３を有する。本例において、幅Ｗ３は約３０mmに設定され、離間距離Ｗ２は約２０mmに設定され、幅Ｗ１は、約５００mmに設定される。 The flooring body 2' thus formed by integrally connecting the extruded shapes 40 with the joint members 50 has an overall dimension (width dimension) of width W1 (=W x 2 + W2) including the separation distance W2 between the extruded shapes 40. The joint members 50 have a height that is substantially the same as the thickness T of the extruded shapes 50, and a width W3 that is greater than the separation distance W2. In this example, the width W3 is set to approximately 30 mm, the separation distance W2 is set to approximately 20 mm, and the width W1 is set to approximately 500 mm.

かくして左右一対の押出形材４０を一体化した床材本体２’には、床面延設部材３（図１２及び図１３）、可動爪式つかみ金具４及び可動フック式つかみ金具１０を取付けられ、フルサイズ（幅約５００mm）の仮設床材１’が製作されるが、押出形材４０は、図１７（Ｂ）に示す如く、ハーフサイズ（幅約２４０mm）の仮設床材１”としても使用し得る。 The flooring body 2', which is thus formed by integrating a pair of left and right extrusions 40, is fitted with floor extension members 3 (Figs. 12 and 13), movable claw-type gripping fittings 4, and movable hook-type gripping fittings 10 to produce a full-size (approximately 500 mm wide) temporary flooring 1', but the extrusions 40 can also be used as a half-size (approximately 240 mm wide) temporary flooring 1'', as shown in Fig. 17 (B).

即ち、押出形材４０は、鉛直中心面ＣＬに対して左右対称の形状・輪郭を有し、左右の鉛直部４１ａには、リベット孔４１ｃが穿設され、リベット６ｃ、１１ｃ（図１３（Ｂ））によってフック本体６、１１の基部６ａ、１１ａを鉛直部４１ａに取付けることができ、しかも、押出形材４０の幅Ｗは約２４０mmであり、一般的なハーフサイズ（幅約２００～２５０mm）の仮設床材として使用可能な幅寸法を有する。従って、図１７（Ｂ）に示すように可動爪式つかみ金具４及び可動フック式つかみ金具１０を押出形材４０（床材本体２”）の両端部に取付けるとともに、ハーフサイズ用の床面延設部材３（図１７（Ｂ）に一点鎖線で示す）を押出形材４０の各端部に取付けることにより、ハーフサイズ（幅約２４０mm）の仮設床材１”を押出形材４０によって製作することができる。 That is, the extrusion 40 has a shape and contour that are symmetrical with respect to the vertical center plane CL, and rivet holes 41c are drilled in the left and right vertical parts 41a, so that the bases 6a, 11a of the hook bodies 6, 11 can be attached to the vertical parts 41a with rivets 6c, 11c (Fig. 13(B)). Moreover, the width W of the extrusion 40 is about 240 mm, which is a width dimension that can be used as a general half-size (width about 200 to 250 mm) temporary floor material. Therefore, as shown in Fig. 17(B), by attaching the movable claw-type gripping fittings 4 and the movable hook-type gripping fittings 10 to both ends of the extrusion 40 (floor material body 2") and attaching half-size floor surface extension members 3 (shown by dashed lines in Fig. 17(B)) to each end of the extrusion 40, a half-size (width about 240 mm) temporary floor material 1" can be manufactured using the extrusion 40.

かくして、本実施例に係る押出形材４０は、フルサイズ（幅約５００mm）の仮設床材１’の構成要素として使用し得るのみならず、ハーフサイズ（幅約２４０mm）の仮設床材１”の構成要素としても使用し得るので、一種類の成形ダイを使用した押出形成工程により押出形材４０を量産し、これをフルサイズ及びハーフサイズ共用の資材として使用すれば良く、従って、本実施例によれば、仮設床材の製造コスト及び製品価格を比較的大きく低減することができる。 Thus, the extrusion profile 40 of this embodiment can be used not only as a component of a full-size (approximately 500 mm wide) temporary flooring 1', but also as a component of a half-size (approximately 240 mm wide) temporary flooring 1". Therefore, the extrusion profile 40 can be mass-produced by an extrusion forming process using one type of molding die and used as a material for both full-size and half-size. Therefore, according to this embodiment, the manufacturing costs and product prices of temporary flooring can be reduced relatively significantly.

図１８には、つかみ金具４、１０を鉛直部４１ａに取付けた状態が示されている。前述の如く、つかみ金具４、１０の基部６ａ、１１ａは、リベット６ｃ、１１ｃ（図１３（Ｂ））によって鉛直部４１ａに取付けられるが、つかみ金具４、１０は、図１８に示す如く、片側において鉛直部４１ａの内側（幅方向内方の側）に配設され、幅方向反対側において鉛直部４１ａの外側（幅方向外方の側）に配設される。即ち、つかみ金具４、１０の取付け位置は、仮設床材１”の平面視鉛直中心軸線に対して１８０度の回転対称の位置である。このようなつかみ金具４、１０の取付け位置の回転対称性は、図１７（Ａ）に示す如く、左右一対の押出形材４０をジョイント部材５０によって並列に連結してなる仮設床材１’や、前述した実施例１の仮設床材１においても同様に採用される。 Figure 18 shows the state where the gripping fittings 4, 10 are attached to the vertical part 41a. As described above, the bases 6a, 11a of the gripping fittings 4, 10 are attached to the vertical part 41a by rivets 6c, 11c (Figure 13 (B)). As shown in Figure 18, the gripping fittings 4, 10 are arranged on the inside (inner side in the width direction) of the vertical part 41a on one side and on the outside (outer side in the width direction) of the vertical part 41a on the opposite side in the width direction. In other words, the attachment positions of the gripping fittings 4, 10 are positions that are rotationally symmetrical by 180 degrees with respect to the vertical central axis of the temporary floor material 1" in a plan view. This rotational symmetry of the attachment positions of the gripping fittings 4, 10 is also adopted in the temporary floor material 1', which is formed by connecting a pair of left and right extrusions 40 in parallel with a joint member 50 as shown in Figure 17 (A), and in the temporary floor material 1 of the above-mentioned embodiment 1.

図１７（Ｂ）及び図１８に示す仮設床材１”は、押出形材４０の単体にフック本体６、１１及び床面延設部材３を取付けた構成を有する。幅Ｗ＝２４０mm程度の仮設床材１”は、枠組足場等の仮設足場においてハーフサイズの仮設床材として好適に使用し得る。幅Ｗの値を設定変更し、例えば、仮設床材１”の幅Ｗを約２８０～３２０mm程度の寸法（例えば、３００mm）に設定することにより、仮設床材１”を支保工足場等の仮設床材としても好適に使用し得る。 The temporary flooring 1" shown in Figures 17(B) and 18 has a structure in which the hook bodies 6, 11 and floor extension member 3 are attached to a single extrusion 40. The temporary flooring 1" with a width W of approximately 240 mm can be used suitably as a half-size temporary flooring for temporary scaffolding such as frame scaffolding. By changing the value of the width W, for example by setting the width W of the temporary flooring 1" to a dimension of approximately 280 to 320 mm (e.g. 300 mm), the temporary flooring 1" can also be used suitably as a temporary flooring for shoring scaffolding, etc.

図１９は、本発明の更に他の実施例に係る可動フック式つかみ金具１０の構造を示す側面図である。図１９（Ａ）には、可動フック１３を配置した側のつかみ金具１０の側面図が示されており、図１９（Ｂ）には、可動フック１３とは反対の側のつかみ金具１０の側面図が示されている。 また、図１９（Ｃ）は、図１９（Ｂ）と同じ側のつかみ金具１０の側面図であり、外れ止め５を上方に変位させてつかみ金具１０の横架材収容域εを開放した状態が図１９（Ｃ）に示されている。なお、各図には、つかみ金具１０及び横架材Ｂのみが図示されており、床材本体２及び床面延設部材３は、図示を省略されている。また、各図において、前述の実施例（実施例１及び２）における各構成要素又は構成部材と実質的に同一又は同等の構成要素又は構成部材については、同一の参照符号が付されている。 19 is a side view showing the structure of a movable hook type gripping fixture 10 according to another embodiment of the present invention. FIG. 19(A) shows a side view of the gripping fixture 10 on the side where the movable hook 13 is arranged, and FIG. 19(B) shows a side view of the gripping fixture 10 on the opposite side to the movable hook 13. FIG. 19(C) is a side view of the gripping fixture 10 on the same side as FIG. 19(B), and FIG. 19(C) shows the state in which the stopper 5 is displaced upward to open the cross member storage area ε of the gripping fixture 10. Note that each figure shows only the gripping fixture 10 and the cross member B, and the floor material main body 2 and floor surface extension member 3 are omitted. In each figure, the same reference numerals are used for components or components that are substantially the same or equivalent to those in the above-mentioned embodiments (embodiments 1 and 2).

前述の各実施例（実施例１、２）においては、つかみ金具１０は、本体１１に固定された固定爪からなる外れ止め１２を備えるが、本例のつかみ金具１０は、つかみ金具４と同様、重力式（セルフロック式）の可動爪からなる外れ止め５を備える。前述の実施例と同様、外れ止め５は、湾曲スロット（長孔）７を有し、スロット７を貫通する上下一対の水平スタッド（水平支軸）８が、本体１１の側面に水平に突設される。外れ止め５は、常時は、重力下に降下した降下位置（図１９（Ｂ））に位置する。上側のスタッド８は、スロット７の上縁部分を支承し、外れ止め５の横架材係合面５ｂは、横架材Ｂの下部外周面に近接するように横架材Ｂの下半部外周域に湾曲して延びる。仮設床材１を横架材Ｂに架設した状態（図１９（Ａ）及び図１９（Ｂ））では、横架材係合面５ｂは横架材Ｂの下半部外周面から離間する。横架材係合面１２ａと横架材Ｂの下半部外周面との間には、横架材Ｂに対するつかみ金具１０の上方変位を可能にする隙間又は間隙κが形成される。 In each of the above-mentioned embodiments (Examples 1 and 2), the gripping fixture 10 is provided with a stopper 12 consisting of a fixed claw fixed to the main body 11, but the gripping fixture 10 in this embodiment is provided with a stopper 5 consisting of a gravity-type (self-locking) movable claw, similar to the gripping fixture 4. As in the above-mentioned embodiment, the stopper 5 has a curved slot (long hole) 7, and a pair of upper and lower horizontal studs (horizontal support shafts) 8 that penetrate the slot 7 are horizontally protruded from the side of the main body 11. The stopper 5 is normally located in a lowered position (Figure 19 (B)) lowered under gravity. The upper stud 8 supports the upper edge portion of the slot 7, and the cross member engagement surface 5b of the stopper 5 curves and extends to the lower half outer periphery of the cross member B so as to be close to the lower outer periphery of the cross member B. When the temporary floor material 1 is installed on the cross member B (FIGS. 19(A) and 19(B)), the cross member engagement surface 5b is separated from the outer peripheral surface of the lower half of the cross member B. Between the cross member engagement surface 12a and the outer peripheral surface of the lower half of the cross member B, a gap or clearance κ is formed that allows the gripping metal fitting 10 to be displaced upward relative to the cross member B.

外れ止め１２は、平面視において横架材Ｂと重なり、水平方向の重なり寸法βは、５mm以上且つ２０mm以下、好ましくは、５mm以上且つ１５mm以下、例えば、約１０mmに設定される。横架材Ｂに対する外れ止め５の上方変位は、寸法βの重なりに依る横架材係合面５ｂと横架材Ｂとの係合によって阻止される。例えば、風圧等に起因した仮設床材１の浮き上がり現象は、横架材係合面５ｂが横架材Ｂに係合又は衝合することによって阻止される。 The anti-slipper 12 overlaps with the cross member B in plan view, and the horizontal overlap dimension β is set to 5 mm or more and 20 mm or less, preferably 5 mm or more and 15 mm or less, for example, approximately 10 mm. Upward displacement of the anti-slipper 5 relative to the cross member B is prevented by the cross member engagement surface 5b engaging with the cross member B due to the overlap dimension β. For example, the lifting of the temporary floor material 1 due to wind pressure, etc. is prevented by the cross member engagement surface 5b engaging or colliding with the cross member B.

図１９（Ｂ）に矢印で示す如く、外れ止め５を手指で上方に押し上げ、下側のスタッド８がスロット７の下縁部分に当接又は衝合すると、外れ止め５の横架材係合面５ｂは、図１９（Ｃ）に示す如く、横架材Ｂの下半部外周域から退避し、本体６の凹所を下方に比較的大きく開放する。この手動ロック解除操作の結果、可動フック１３の内側縁部（横架材係合面１３ａの下縁部分）１３ｄと、外れ止め５の先端部５ｄとの間に形成された開口部λの開口寸法Ｄ２は、開口寸法Ｄ３に拡大する。開口寸法Ｄ３は、水平投影面内の寸法として測定された値であり、横架材Ｂの直径（外径）Ｄ１よりも大きい値に設定される。外れ止め５は、この退避位置（図１９（Ｃ））において、横架材Ｂに対する仮設床材１の上方変位を許容するので、つかみ金具４を上方に持ち上げて横架材Ｂから離間又は離脱させることができる。 When the stopper 5 is pushed upward by the fingers as shown by the arrow in FIG. 19(B) and the lower stud 8 abuts or strikes the lower edge of the slot 7, the cross member engagement surface 5b of the stopper 5 retreats from the outer periphery of the lower half of the cross member B as shown in FIG. 19(C), opening the recess of the main body 6 downward relatively widely. As a result of this manual unlocking operation, the opening dimension D2 of the opening λ formed between the inner edge portion (lower edge portion of the cross member engagement surface 13a) 13d of the movable hook 13 and the tip portion 5d of the stopper 5 expands to an opening dimension D3. The opening dimension D3 is a value measured as a dimension in a horizontal projection plane, and is set to a value larger than the diameter (outer diameter) D1 of the cross member B. In this retreated position (FIG. 19(C)), the stopper 5 allows the temporary floor material 1 to be displaced upward relative to the cross member B, so the gripping metal fitting 4 can be lifted upward to separate or detach from the cross member B.

可動フック１０の構成、構造及び機能は、前述の各実施例における可動フック１０の構成、構造及び機能と実質的に同一であるので、可動フック１０に関する重複した説明については、省略する。 The configuration, structure, and function of the movable hook 10 are substantially the same as those of the movable hook 10 in each of the above-described embodiments, so duplicated explanations regarding the movable hook 10 will be omitted.

本例のつかみ金具１０によれば、前述の各実施例において図９を参照して説明した如く、作業者は、つかみ金具１０の反対側に位置するつかみ金具４を解放して仮設床材１の端部を若干押し上げ且つ仮設床材１を僅かに傾斜させた後、仮設床材１を斜め上方（係合離脱方向）に移動させることにより、仮設床材１を撤去することができ、従って、仮設床材１を若干持ち上げた状態で仮設床材１の端部間を移動して両端部のつかみ金具１０の手動ロック解除操作を行う煩雑な作業を要しない。このため、仮設床材１の撤去作業における作業者の労力は大幅に低減し、作業上の負担又は負荷は大幅に軽減する。また、本例のつかみ金具１０は、本体１１に固定された固定爪式の外れ止め１２（実施例１、２）に換えて、重力式（セルフロック式）の可動爪からなる外れ止め５を備えるので、所望より、仮設床材１の撤去作業として、図１０に示す従来の撤去作業の作業工程を採用することが可能となる。また、容易に理解し得るとおり、本例のつかみ金具１０を仮設床材１の両端部に配設しても良い。 According to the gripping fixture 10 of this example, as explained with reference to FIG. 9 in each of the above-mentioned embodiments, the worker can remove the temporary flooring 1 by releasing the gripping fixture 4 located on the opposite side of the gripping fixture 10, slightly pushing up the end of the temporary flooring 1 and slightly tilting the temporary flooring 1, and then moving the temporary flooring 1 diagonally upward (in the direction of engagement and disengagement). Therefore, there is no need for the cumbersome task of moving between the ends of the temporary flooring 1 while slightly lifting it and manually unlocking the gripping fixtures 10 at both ends. This significantly reduces the labor of the worker in the removal work of the temporary flooring 1, and significantly reduces the burden or load on the worker during the work. In addition, the gripping fixture 10 of this example is equipped with a gravity-type (self-locking) movable claw stopper 5 instead of the fixed claw-type stopper 12 (Examples 1 and 2) fixed to the main body 11, so that it is possible to adopt the work process of the conventional removal work shown in FIG. 10 as the removal work of the temporary flooring 1, if desired. As can be easily understood, the gripping fixtures 10 in this example may also be placed on both ends of the temporary floor material 1.

また、本例のつかみ金具１０を備えた仮設床材１の場合、仮設床材１を横架材Ｂから撤去するためにつかみ金具１０を横架材Ｂから離脱させる作業において、外れ止め５の手動ロック解除操作を行うとともに、可動フック１３を上方に回動させ、これにより、つかみ金具１０の開口部λを大きく拡開することができる。例えば、予測困難な仮設床材１の歪み、変形又は傾斜等に起因して、外れ止め１２のロック解除操作又は可動フック１３の回動操作の一方のみではつかみ金具を所望の如く横架材Ｂから離脱させ難い状態が生じた場合、外れ止め１２のロック解除操作と可動フック１３の回動操作との双方を併用し、これにより、つかみ金具１０の開口部λを大きく拡開し、つかみ金具１０を比較的容易に横架材Ｂから係合離脱させることが可能となる。 In the case of the temporary flooring 1 equipped with the gripping fittings 10 of this example, in the operation of detaching the gripping fittings 10 from the cross member B in order to remove the temporary flooring 1 from the cross member B, the manual unlocking operation of the release stopper 5 is performed and the movable hook 13 is rotated upward, thereby making it possible to greatly expand the opening λ of the gripping fittings 10. For example, if a situation arises in which it is difficult to detach the gripping fittings from the cross member B as desired by only unlocking the release stopper 12 or rotating the movable hook 13 due to unpredictable distortion, deformation, or tilt of the temporary flooring 1, the combination of the unlocking operation of the release stopper 12 and the rotating operation of the movable hook 13 can be used to greatly expand the opening λ of the gripping fittings 10, making it possible to relatively easily engage and disengage the gripping fittings 10 from the cross member B.

図２０、図２１及び図２２は、上記各実施例の変形例に係る面内変位式又は面内スライド式の可動フックを備えたつかみ金具１０の構造を示す側面図及び部分拡大側面図である。図２０、図２１及び図２２には、仮設床材１の撤去作業と関連したつかみ金具１０の作動態様が段階的に示されている。なお、各図には、つかみ金具１０及び横架材Ｂのみが図示されており、床材本体２及び床面延設部材３は、図示を省略されている。また、各図において、前述の実施例（実施例１～３）における各構成要素又は構成部材と実質的に同一又は同等の構成要素又は構成部材については、同一の参照符号が付されている。 Figures 20, 21, and 22 are side views and partially enlarged side views showing the structure of a gripping fitting 10 equipped with an in-plane displacement or in-plane sliding movable hook according to a modified example of each of the above-mentioned embodiments. Figures 20, 21, and 22 show step-by-step operation of the gripping fitting 10 in relation to the removal of the temporary floor material 1. Note that each figure shows only the gripping fitting 10 and the cross member B, and the floor material main body 2 and floor extension member 3 are omitted. In each figure, the same reference numerals are used for components or components that are substantially the same as or equivalent to the components or components in the above-mentioned embodiments (Examples 1 to 3).

図２０に示す如く、本例のつかみ金具１０は、横架材Ｂに係止可能な本体１１と、重力式（セルフロック式）の可動爪からなる外れ止め５と、面内変位可能に本体１１に支承された平板状の可動フック６０とを備える。 As shown in FIG. 20, the gripping fixture 10 of this example includes a main body 11 that can be engaged with a cross member B, a gravity-type (self-locking) movable claw that prevents the gripper 5 from coming loose, and a flat movable hook 60 that is supported by the main body 11 and can be displaced in-plane.

前述の各実施例と同じく、本体１１は、横架材Ｂの上部外周面に着座するように湾曲した湾曲着座面１７を備える。湾曲着座面１７は、横架材Ｂの頂部Ｂａの近傍において水平延長面１７ａに移行し、水平延長面１７ａは、床材本体２とは反対の側に延び、傾斜面１７ｂ、１７ｃに連続する。本例において、傾斜面１７ｂ、１７ｃは、横架材Ｂの外周面から離間する。図２０には、湾曲着座面１７又はその水平延長面１７ａ が横架材Ｂに着座した状態、即ち、つかみ金具１０の係止位置が示されている。仮設床材１の荷重は、湾曲着座面１７又はその水平延長面１７ａを介して横架材Ｂに伝達する。 As in the above-mentioned embodiments, the main body 11 has a curved seating surface 17 that is curved so as to seat on the upper outer peripheral surface of the cross member B. The curved seating surface 17 transitions to a horizontal extension surface 17a near the top Ba of the cross member B, and the horizontal extension surface 17a extends to the opposite side of the flooring body 2 and continues to the inclined surfaces 17b and 17c. In this example, the inclined surfaces 17b and 17c are spaced apart from the outer peripheral surface of the cross member B. Figure 20 shows the state in which the curved seating surface 17 or its horizontal extension surface 17a is seated on the cross member B, that is, the engagement position of the gripping metal fitting 10. The load of the temporary flooring 1 is transmitted to the cross member B via the curved seating surface 17 or its horizontal extension surface 17a.

外れ止め５は、前述の実施例３と同様、湾曲スロット（長孔）７を有し、スロット７を貫通する上下一対の水平スタッド（水平支軸）８が、本体１１の側面に水平に突設される。外れ止め５は、常時は、重力下に降下し、本体１１の上方変位を阻止するロック位置に位置しており、風圧等に起因した仮設床材１の浮き上がり等を防止する。図２０（Ａ）に矢印で示す如く、外れ止め５を手指で上方に押し上げることにより、前述の実施例３（図１９（Ｃ））において説明したとおり、外れ止め５をロック解除位置に変位せしめ、つかみ金具１０の開口部λを下方に大きく拡開することが可能となる。 As in the above-mentioned third embodiment, the stopper 5 has a curved slot (long hole) 7, and a pair of upper and lower horizontal studs (horizontal support shafts) 8 that penetrate the slot 7 protrude horizontally from the side of the main body 11. The stopper 5 is normally in a locked position that descends under gravity and prevents the main body 11 from moving upward, preventing the temporary flooring 1 from floating up due to wind pressure, etc. As shown by the arrow in Figure 20 (A), by pushing the stopper 5 upward with the fingers, the stopper 5 can be displaced to the unlocked position as explained in the above-mentioned third embodiment (Figure 19 (C)), and the opening λ of the gripping fitting 10 can be greatly expanded downward.

可動フック６０は、傾斜面１７ｂ、１７ｃを有する本体１１の先端部分に配置される。図２０（Ｂ）に示す如く、可動フック６０は、横架材Ｂの上部外周面に近接するように横架材Ｂの上半部外周域に湾曲して延びる横架材係合面６２を有する。横架材係合面６２は、先端下面６８との境界部分に位置する可動フック６０の内側縁部（横架材係合面６２の下縁部分）６１を有し、内側縁部６１は、外れ止め５の先端部５ｄと対向する。開口部λの開口寸法Ｄ２は、内側縁部６１と先端部５ｄとの離間距離である。内側縁部１３ｄは、前述の各実施例と同様、微小曲率半径の曲面である。前述の各実施例と同様、開口部λの開口平面ωは、水平面ＨＬに対して傾斜しており、開口平面ωの垂線μは、水平面ＨＬに対して傾斜角θをなす方向に配向される。 The movable hook 60 is disposed at the tip of the main body 11 having the inclined surfaces 17b and 17c. As shown in FIG. 20B, the movable hook 60 has a cross member engaging surface 62 that curves and extends to the upper half outer periphery of the cross member B so as to approach the upper outer periphery of the cross member B. The cross member engaging surface 62 has an inner edge portion (lower edge portion of the cross member engaging surface 62) 61 of the movable hook 60 located at the boundary portion with the tip lower surface 68, and the inner edge portion 61 faces the tip portion 5d of the slip prevention device 5. The opening dimension D2 of the opening λ is the distance between the inner edge portion 61 and the tip portion 5d. The inner edge portion 13d is a curved surface with a small radius of curvature, as in each of the above-mentioned embodiments. As in each of the above-mentioned embodiments, the opening plane ω of the opening λ is inclined with respect to the horizontal plane HL, and the perpendicular line μ of the opening plane ω is oriented in a direction that forms an inclination angle θ with respect to the horizontal plane HL.

可動フック６０を面内変位可能に支承する水平なスタッド形の支軸６３、６４が、対をなして本体１１の先端部分に水平に突設される。各支軸６３、６４は、本体１１の先端部分に一体的に取付けられた段付きリベット、ボルト、螺子又はピン等の機械要素よりなる。本例において、支軸６３、６４の中心軸線は、本体１１の中心平面（鉛直平面）と直交し、横架材Ｂの中心軸線Ｂｃと実質的に平行に配向される。下側に位置する支軸６３の中心軸線は、中心軸線Ｂｃのレベル（高さ位置）ＨＬと実質的に同一又はその上下方向に±１５mm以内（好ましくは、±１０mm以内）の高低差を隔てた位置に位置決めされる。上側に位置する支軸６４の中心軸線は、横架材Ｂの頂部Ｂａのレベル（高さ位置）と実質的に同一又はその上下方向に±１５mm以内（好ましくは、±１０mm以内）の高低差を隔てた位置に位置決めされる。可動フック６０の先端下面６８は、横架材Ｂの中心軸線Ｂｃのレベル（高さ位置）ＨＬよりも下方に位置し、レベルＨＬと先端下面６８との高低差Δｈ１は、好ましくは、１５mm以下（５mm以上）、更に好ましくは、７～１２mmの範囲内の寸法、例えば、約１０mmに設定される。 Horizontal stud-shaped support shafts 63, 64 that support the movable hook 60 so as to be displaceable in the plane are provided in pairs and protrude horizontally from the tip of the main body 11. Each support shaft 63, 64 is made of a mechanical element such as a stepped rivet, bolt, screw or pin that is integrally attached to the tip of the main body 11. In this example, the central axis of the support shafts 63, 64 is perpendicular to the central plane (vertical plane) of the main body 11 and is oriented substantially parallel to the central axis Bc of the cross member B. The central axis of the support shaft 63 located on the lower side is positioned at a position substantially identical to the level (height position) HL of the central axis Bc or at a position separated by a height difference of ±15 mm or less (preferably, ±10 mm or less) in the vertical direction. The central axis of the support shaft 64 located on the upper side is positioned at a position substantially identical to the level (height position) of the top Ba of the cross member B or at a position separated by a height difference of ±15 mm or less (preferably, ±10 mm or less) in the vertical direction. The tip underside 68 of the movable hook 60 is located below the level (height position) HL of the central axis Bc of the cross member B, and the height difference Δh1 between the level HL and the tip underside 68 is preferably set to a dimension of 15 mm or less (5 mm or more), more preferably within the range of 7 to 12 mm, for example, approximately 10 mm.

可動フック６０は、支軸６３、６４が夫々貫通する一対のＬ形スロット（長孔）６５、６６を有する。支軸６３、６４は、可動フック６０を支承する。可動フック６０は、本体１１の側面と、支軸６３、６４の拡大ヘッド部分６３ａ、６４ａとの間に遊動可能に挟持され、可動フック６０又は本体１１の中心平面と実質的に同一又は平行な平面内（従って、実質的に鉛直な平面内）において変位可能又はスライド可能に本体１１に支持又は保持される。なお、以下の説明において、可動フック６０又は本体１１の中心平面と実質的に同一又は平行な平面内、或いは、実質的に鉛直な平面内における可動フック６０の変位を「面内変位」というものとする。この面内変位は、側面視における可動フック６０の挙動により特定し得る可動フック６０の二次元的変位として把握し得る性質のものである。 The movable hook 60 has a pair of L-shaped slots (long holes) 65, 66 through which the support shafts 63, 64 pass, respectively. The support shafts 63, 64 support the movable hook 60. The movable hook 60 is movably sandwiched between the side of the main body 11 and the enlarged head portions 63a, 64a of the support shafts 63, 64, and is supported or held by the main body 11 so as to be displaceable or slidable in a plane substantially identical or parallel to the central plane of the movable hook 60 or the main body 11 (hence, in a substantially vertical plane). In the following description, the displacement of the movable hook 60 in a plane substantially identical or parallel to the central plane of the movable hook 60 or the main body 11, or in a substantially vertical plane, is referred to as "in-plane displacement". This in-plane displacement is of a nature that can be grasped as a two-dimensional displacement of the movable hook 60 that can be identified by the behavior of the movable hook 60 in a side view.

下側のＬ形スロット６５は、上下方向又は鉛直方向に延びる縦長スロット部分６５ａと、本体１１の基部１１ａの側（横架材Ｂの側）に向かって横方向又は水平方向に延びる横長スロット部分６５ｂとを概ね直角に連接した構成を有する。上側のＬ形スロット６６は、上下方向又は鉛直方向に延びる縦長スロット部分６６ａと、若干斜め上方に傾斜して本体１１の先端側（横架材Ｂとは反対の側）に延びる横向きの横長スロット部分６６ｂとを鈍角に連接した構成を有する。図２０に示すつかみ金具１０の係止位置では、可動フック６０は、横架材Ｂによって相対的に上方に押圧され又は支承され、その最上昇位置に面内変位しており、支軸６３、６４は、縦長スロット部分６５ａ、６６ａの最下部に位置する。 The lower L-shaped slot 65 has a vertical slot portion 65a extending up and down or vertically and a horizontal slot portion 65b extending horizontally or horizontally toward the base 11a of the main body 11 (the side of the cross member B) connected at a substantially right angle. The upper L-shaped slot 66 has a vertical slot portion 66a extending up and down or vertically and a horizontal slot portion 66b extending horizontally at an obtuse angle and slightly upwardly inclined toward the tip side of the main body 11 (the side opposite the cross member B). In the engagement position of the gripping fixture 10 shown in FIG. 20, the movable hook 60 is relatively pressed or supported upward by the cross member B and displaced in-plane to its highest position, and the support shafts 63 and 64 are located at the lowest part of the vertical slot portions 65a and 66a.

かくして、つかみ金具１０の係止位置においては、横架材係合面６２は、自重により横架材Ｂの上部外周面に接触し又は近接するが、仮設床材１の荷重及びその反力は、横架材係合面６２に作用せず、仮設床材１の荷重は、湾曲着座面１７又はその水平延長部分１７ａを介して横架材Ｂに伝達し、横架材Ｂに対するつかみ金具１０の水平変位は、湾曲着座面１７又は横架材係合面６２と横架材Ｂとの係合又は衝合によって阻止される。 Thus, when the gripping fixture 10 is in the locked position, the cross member engagement surface 62 comes into contact with or is close to the upper outer peripheral surface of the cross member B due to its own weight, but the load of the temporary floor material 1 and its reaction force do not act on the cross member engagement surface 62. The load of the temporary floor material 1 is transmitted to the cross member B via the curved seating surface 17 or its horizontal extension 17a, and horizontal displacement of the gripping fixture 10 relative to the cross member B is prevented by the engagement or collision between the curved seating surface 17 or the cross member engagement surface 62 and the cross member B.

以下、前述した仮設床材１の撤去作業（図９等）における本例のつかみ金具１０の作動態様について説明する。 The following describes the operation of the gripping fixture 10 in this example during the removal of the temporary floor material 1 described above (Figure 9, etc.).

図２０（Ｂ）に上向き鉛直の外力Ｆｖで示すように、つかみ金具１０を持ち上げると、本体１１及び外れ止め５は、図２１に示す如く、横架材Ｂに対して上方に変位し、横架材Ｂの下半部外周面が外れ止め５の横架材係合面５ｂに近接、衝合又は当接する。図２０（Ｂ）に破線の矢印τ１、τ２で示す如く、横架材Ｂが本体１１及び外れ止め５に対して相対的に下方に変位する結果、可動フック６０も又、その自重により、本体１１に対して相対的に下方に変位し、支軸６３、６４は、矢印τ３、τ４で示す如く、縦長スロット部分６５ａ、６６ａの最上部に相対移動する。 When the gripping fixture 10 is lifted, as shown by the upward vertical external force Fv in FIG. 20(B), the main body 11 and the stopper 5 are displaced upward relative to the cross member B as shown in FIG. 21, and the outer peripheral surface of the lower half of the cross member B approaches, collides with, or comes into contact with the cross member engagement surface 5b of the stopper 5. As shown by the dashed arrows τ1 and τ2 in FIG. 20(B), the cross member B is displaced downward relative to the main body 11 and the stopper 5, and as a result, the movable hook 60 is also displaced downward relative to the main body 11 due to its own weight, and the support shafts 63 and 64 move relative to the top of the vertically elongated slot portions 65a and 66a as shown by the arrows τ3 and τ4.

図２１に示す如く、矢印η方向（係合離脱方向）の外力Ｆηがつかみ金具１０に作用すると、内側縁部６１、或いは、その近傍の横架材係合面６２の部分が横架材Ｂに押圧され、可動フック６０の下部は、横架材Ｂの外周面の反力又は反作用により、矢印ν１で示す如く、本体１１から延出するように水平方向又は横方向に変位し、支軸６３は、破線の矢印τ５で示す如く、横長スロット部分６５ｂに沿ってその末端部又は終端部に相対移動する。また、横架材Ｂが本体１１及び外れ止め５に対して相対的に下方に変位する結果、可動フック６０は、その自重により、矢印ν２、ν３で示す如く、横架材Ｂの側に傾倒し、支軸６４は、破線の矢印τ６で示す如く、横長スロット部分６６ｂに沿ってその末端部又は終端部に相対移動する。 As shown in FIG. 21, when an external force Fη in the direction of the arrow η (engagement/disengagement direction) acts on the gripping fixture 10, the inner edge 61 or the portion of the cross member engagement surface 62 in the vicinity thereof is pressed against the cross member B, and the lower portion of the movable hook 60 is displaced horizontally or laterally so as to extend from the main body 11 as shown by the arrow ν1 due to the reaction force or reaction of the outer peripheral surface of the cross member B, and the support shaft 63 moves relatively to its end or terminal end along the horizontal slot portion 65b as shown by the dashed arrow τ5. In addition, as a result of the cross member B being displaced downward relative to the main body 11 and the stopper 5, the movable hook 60 is tilted by its own weight toward the cross member B as shown by the arrows ν2 and ν3, and the support shaft 64 moves relatively to its end or terminal end along the horizontal slot portion 66b as shown by the dashed arrow τ6.

かくして可動フック６０が面内変位した状態が図２２に示されている。横架材収容域εの開口部λは、斜め下方に比較的大きく開放するので、つかみ金具１０は、外れ止め５のロック解除操作を行うことなく、横架材Ｂから離脱することができる。このように、つかみ金具１０を横架材Ｂに対して相対移動させ、これにより生じる可動フック６０の面内変位により、横架材収容域εの開口部λを斜め下方に比較的大きく開放せしめる本実施例のつかみ金具１０によれば、前述の各実施例と同じく、つかみ金具１０の手動ロック解除の操作を格別に要しない仮設床材１の撤去作業を実施することが可能となる。また、本例のつかみ金具１０は、重力式（セルフロック式）の可動爪からなる外れ止め５を備えるので、前述の実施例３と同様、所望により、手動ロック解除操作によって外れ止め５を解放する従来の撤去作業の作業工程を採用し、或いは、可動フック６０の面内変位と外れ止め５の手動ロック解除とを併用して、開口部λを下方に大きく拡開した状態で撤去作業を実施することも可能である。 The state in which the movable hook 60 is displaced in-plane is shown in Figure 22. Since the opening λ of the cross member storage area ε opens diagonally downward relatively widely, the gripping fitting 10 can be removed from the cross member B without unlocking the release stopper 5. In this way, the gripping fitting 10 of this embodiment, which moves the gripping fitting 10 relative to the cross member B and opens the opening λ of the cross member storage area ε diagonally downward relatively widely due to the in-plane displacement of the movable hook 60 that occurs as a result, makes it possible to carry out the removal work of the temporary floor material 1 without specially requiring the manual unlocking operation of the gripping fitting 10, as in the above-mentioned embodiments. In addition, the gripping fixture 10 in this example is equipped with a gravity-type (self-locking) movable claw that acts as a stopper 5, so similar to the above-mentioned third embodiment, if desired, it is possible to adopt the conventional removal process in which the stopper 5 is released by a manual unlocking operation, or to combine the in-plane displacement of the movable hook 60 with the manual unlocking of the stopper 5 to perform the removal process with the opening λ greatly expanded downward.

なお、仮設床材１を横架材Ｂ間に架設又は懸架する工程では、可動フック６０は、つかみ金具１０を横架材Ｂ上に着座させる際に横架材Ｂに当接して相対的に上方に面内変位し、開口部λの開口を過渡的に拡開するので、横架材Ｂを横架材収容域ε内に比較的容易に収容することができる。 In the process of erecting or suspending the temporary floor material 1 between the cross members B, the movable hook 60 abuts against the cross member B and displaces relatively upward in-plane when the gripping fitting 10 is seated on the cross member B, transiently widening the opening of the opening λ, so that the cross member B can be accommodated relatively easily within the cross member accommodation area ε.

以上、本発明の好適な実施形態及び実施例について詳細に説明したが、本発明は上記実施形態及び実施例に限定されるものではなく、特許請求の範囲に記載された本発明の範囲内で種々の変形又は変更が可能である。 The above describes in detail preferred embodiments and examples of the present invention, but the present invention is not limited to the above embodiments and examples, and various modifications and changes are possible within the scope of the present invention described in the claims.

例えば、上記実施例のつかみ金具は、外れ止め部材を本体部分に一体的に接合又は固着した構成を有するが、本体部分及び外れ止め部材を一体成形品として一体的に成形し又は製作しても良く、また、上記実施例では、つかみ金具は、単一の可動フック及び外れ止め部材を備えた構成のものであるが、複数の可動フックを本体部分に回動可能に支持し、或いは、複数の外れ止め部材を本体部分に固定し又は一体化しても良い。 For example, the gripping fitting in the above embodiment has a configuration in which the anti-slip member is integrally joined or fixed to the main body portion, but the main body portion and the anti-slip member may be integrally molded or manufactured as a one-piece molded product, and while in the above embodiment the gripping fitting is configured with a single movable hook and anti-slip member, multiple movable hooks may be rotatably supported on the main body portion, or multiple anti-slip members may be fixed to or integrated with the main body portion.

また、上記実施例に係る仮設床材は、アルミ押出形材に直につかみ金具を取付けた構造のものであるが、従来の床付き布枠のつかみ金具に換えて、本発明に係るつかみ金具を配設した構成を有する床付き布枠であっても良い。 The temporary floor material in the above embodiment has a structure in which the gripping metal fittings are attached directly to the aluminum extrusion profile, but it may also be a floor-attached cloth frame having a structure in which the gripping metal fittings of the present invention are arranged in place of the gripping metal fittings of a conventional floor-attached cloth frame.

更に、上記実施例の説明は、主として、枠組足場の建枠によって仮設床材を支持した構成に関するものであるが、前述のとおり、本発明の仮設床材は、楔結合式足場の横架材（腕木）によっても支持することができる。所望により、本発明の仮設床材をブラケット足場、移動式足場等の他の形式の足場において使用し、或いは、他の形式の足場において好適に使用し得るように設計変更することも可能である。 Furthermore, the above embodiment mainly relates to a configuration in which the temporary flooring is supported by the building frame of the scaffolding, but as mentioned above, the temporary flooring of the present invention can also be supported by the cross members (arms) of a wedge-connected scaffolding. If desired, the temporary flooring of the present invention can be used in other types of scaffolding, such as bracket scaffolding and mobile scaffolding, or the design can be modified so that it can be used suitably in other types of scaffolding.

加えて、可動爪式つかみ金具の各部構造については、本発明に適合する限りにおいて、従来の任意の形態、寸法又は設計を適宜採用することができ、また、押出形材の補剛リブの断面性状及び寸法等については、本発明に適合する限りにおいて、任意の設計を採用することができる。例えば、上記実施例では、回動式可動フックの枢支軸をつかみ金具本体の基部又はその近傍に配置しているが、枢支軸を横架材の直上領域においてつかみ金具本体に配置し、或いは、つかみ金具本体の先端部又はその近傍に配置しても良い。また、回動式可動フックを備えたつかみ金具の実施例においては、つかみ金具本体の先端部は、水平な下面を有する水平な突出部分として設計されているが、つかみ金具本体の先端部を横架材の上半部外周面に沿って下方に延びるフック形態に設計しても良く、このような設計においては、横架材の上半部外周面に沿って下方に延びるつかみ金具本体のフック状先端部分に可動フックの枢支軸を配設することも可能である。 In addition, the structure of each part of the movable claw type gripping fixture may be of any conventional shape, size or design as long as it is compatible with the present invention, and the cross-sectional properties and dimensions of the stiffening rib of the extrusion profile may be of any design as long as it is compatible with the present invention. For example, in the above embodiment, the pivot shaft of the rotating movable hook is located at the base of the gripping fixture body or in its vicinity, but the pivot shaft may be located on the gripping fixture body in the area directly above the cross member, or at the tip of the gripping fixture body or in its vicinity. In the embodiment of the gripping fixture with a rotating movable hook, the tip of the gripping fixture body is designed as a horizontal protruding part with a horizontal lower surface, but the tip of the gripping fixture body may be designed in the form of a hook that extends downward along the outer peripheral surface of the upper half of the cross member, and in such a design, it is also possible to arrange the pivot shaft of the movable hook at the hook-shaped tip of the gripping fixture body that extends downward along the outer peripheral surface of the upper half of the cross member.

更に、上記実施例では、つかみ金具をボルト・ナット組立体又はリベットによって床材本体に固定しているが、つかみ金具を他の固定手段又は接合手段によって床材本体に固定しても良い。 Furthermore, in the above embodiment, the gripping hardware is fixed to the flooring body by a bolt and nut assembly or a rivet, but the gripping hardware may be fixed to the flooring body by other fixing means or joining means.

本発明は、建築・土木工事等において使用される枠組足場、楔結合式足場等において、仮設足場の横架材等に係合するつかみ金具によって隣り合う横架材の間に架設又は懸架され、仮設足場の作業通路又は作業床を形成する仮設床材及びそのつかみ金具に適用される。床材本体の第１端部に可動爪式つかみ金具を配設し、床材本体の第２端部に本発明の可動フック式つかみ金具を配設した仮設床材によれば、つかみ金具によって横架材間に架設又は懸架された仮設床材を撤去する仮設床材撤去作業の作業性を改善し、撤去作業時の作業者の作業上の負担又は負荷を軽減することができる。また、床材本体を幅３５０mm以下のアルミ押出形材の組立体より構成した本発明の仮設床材によれば、つかみ金具によって横架材間に架設又は懸架される仮設床材を軽量なアルミ押出形材によって比較的安価に製造することができ、従って、本発明は、仮設足場の設置・撤去作業の作業性を改善する軽量なアルミ製仮設床材の普及に寄与する。更に、横架材の外周域に前述の自由空間を形成する本発明の仮設床材によれば、仮設床材の端部と、他の仮設部材のフック部又は係留金具等とが横架材近傍で位置的又は物理的に干渉するのを確実に防止することできる。かくして、本発明によれば、仮設足場の設置又は撤去作業に従事する作業者の作業上の負担又は負荷を大幅に軽減することが可能となるので、その実用的効果は、顕著である。 The present invention applies to temporary flooring and its gripping fittings, which are erected or suspended between adjacent horizontal members by gripping fittings that engage with the horizontal members of the temporary scaffolding in frame scaffolding, wedge-connected scaffolding, and the like used in architectural and civil engineering works, and form a work passage or work floor of the temporary scaffolding. A temporary flooring material having a movable claw-type gripping fitting disposed at a first end of the flooring material body and a movable hook-type gripping fitting of the present invention disposed at a second end of the flooring material body improves the workability of the temporary flooring material removal work, which removes the temporary flooring material erected or suspended between horizontal members by the gripping fittings, and reduces the work burden or load on the worker during the removal work. In addition, the temporary flooring material of the present invention, in which the flooring body is constructed from an assembly of aluminum extrusions with a width of 350 mm or less, can be manufactured relatively inexpensively from lightweight aluminum extrusions, and the present invention contributes to the spread of lightweight aluminum temporary flooring materials that improve the workability of the installation and removal of temporary scaffolding. Furthermore, the temporary flooring material of the present invention, which forms the above-mentioned free space around the outer periphery of the cross members, can reliably prevent positional or physical interference between the ends of the temporary flooring material and the hooks or mooring fittings of other temporary members near the cross members. Thus, the present invention can significantly reduce the work burden or load on workers engaged in the installation and removal of temporary scaffolding, and its practical effect is remarkable.

１ 仮設床材
２ 床材本体
２ａ 中央連結部
２ｂ 下面
３ 床面延設部材
４ 可動爪式つかみ金具
５ 外れ止め
５ａ 係止部
６ つかみ金具本体
７ 湾曲スロット
８ 水平スタッド
９ 番線挿通孔
１０ 可動フック式つかみ金具
１１ つかみ金具本体
１１ａ 基部
１１ｂ ボルト・ナット組立体
１２ 外れ止め
１３ 可動フック
１２ａ、１３ａ、５ｂ 横架材係合面
１２ｄ 先端部
１３ｂ 先端下面
１３ｄ 内側縁部
１４ 枢支軸
１５ ガイドピン
１６ 湾曲スロット
１７ 湾曲着座面
２０ 上面（床面）
２１、２２ 押出形材
２１ａ、２２ａ 床板部分
２４～２９ 補剛リブ
３０ 水平延出板
４０ 押出形材
５０ ジョイント部材
６０ 可動フック
６１ 内側縁部
６２ 横架材係合面
６３、６４ 支軸
６５、６６ Ｌ形スロット（長孔）
６８ 先端下面
Ａ 建枠
Ｂ 横架材
Ｂａ 横架材の頂部
Ｂｃ 横架材の中心（凹所の中心）
Ｄ１ 横架材の直径
Ｄ２ フック本体の開口寸法
Ｓ 自由空間
Ｓ１、Ｓ２ 直径方向の離間距離
Ｓｈ、ΔＳ 高低差
Ｓｔ 水平離間距離
Δｈ１ 高低差
Δｈ２、Δｈ３ 間隙の高さ寸法
ΔＬ１ 水平変位
α、β 重なり寸法
ε 横架材収容域（凹所）
λ 開口部
η 係合離脱方向
ω 開口平面
μ 垂線
θ 角度
κ 隙間又は間隙 1 Temporary floor material 2 Floor material body 2a Central connecting portion 2b Underside 3 Floor surface extension member 4 Movable claw type gripping metal fitting 5 Stopper 5a Engagement portion 6 Grip metal fitting body 7 Curved slot 8 Horizontal stud 9 Wire insertion hole 10 Movable hook type gripping metal fitting 11 Grip metal fitting body 11a Base 11b Bolt and nut assembly 12 Stopper 13 Movable hook 12a, 13a, 5b Cross member engagement surface 12d Tip portion 13b Tip lower surface 13d Inner edge portion 14 Pivot shaft 15 Guide pin 16 Curved slot 17 Curved seating surface 20 Upper surface (floor surface)
21, 22 Extruded members 21a, 22a Floor plate portions 24 to 29 Stiffening rib 30 Horizontal extension plate 40 Extruded member 50 Joint member 60 Movable hook 61 Inner edge portion 62 Cross member engagement surface 63, 64 Support shaft 65, 66 L-shaped slot (long hole)
68 Tip bottom surface A Building frame B Horizontal member Ba Top of horizontal member Bc Center of horizontal member (center of recess)
D1 Diameter of cross member D2 Opening dimension S of hook body Free space S1, S2 Diameter separation distance Sh, ΔS Height difference St Horizontal separation distance Δh1 Height difference Δh2, Δh3 Gap height dimension ΔL1 Horizontal displacement α, β Overlap dimension ε Cross member accommodation area (recess)
λ Opening η Engagement/disengagement direction ω Opening plane μ Perpendicular θ Angle κ Gap or space

Claims (20)

仮設足場の作業床又は作業通路を形成する仮設床材のつかみ金具であって、
仮設床材の角部に配置され、仮設床材の端部から布方向又は桁方向に突出するように床材本体の端部に突設され、仮設床材を支持又は支承する横架材に係止して仮設床材の鉛直荷重を該横架材に伝達する仮設床材のつかみ金具において、
前記床材本体に固定される基部と、前記横架材の上半部外周面に着座して仮設床材の鉛直荷重を該横架材に伝達する着座面とを備えた本体部分と、
前記横架材の床材本体側の領域で前記本体部分に設けられた外れ止め部材又は外れ止め部分と、
前記本体部分に回動可能又は面内変位可能に支持又は支承され、前記床材本体とは反対の側において前記横架材の上半部外周面に沿って延びる横架材係合面を備え、前記横架材によって該横架材係合面を押圧することにより、前記本体部分に対して上方に回動し、或いは、該本体部分に対して相対的に面内変位する可動フックとを有することを特徴とする仮設床材のつかみ金具。 A gripping metal fitting for a temporary floor material forming a work floor or a work passage of a temporary scaffold,
A temporary floor gripping metal fitting is arranged at the corner of a temporary flooring material, protrudes from the end of the temporary flooring material in the fabric direction or the girder direction, and engages with a cross member that supports or supports the temporary flooring material to transmit the vertical load of the temporary flooring material to the cross member.
A main body portion including a base portion fixed to the floor material main body and a seating surface seated on the outer peripheral surface of the upper half of the cross member to transmit the vertical load of the temporary floor material to the cross member;
A stopper member or stopper portion provided on the main body portion in the area of the floor material main body side of the cross member;
A gripping fitting for a temporary flooring material, characterized in that it has a movable hook that is supported or supported on the main body portion so as to be rotatable or displaceable in-plane, and has a cross member engagement surface extending along the outer peripheral surface of the upper half of the cross member on the side opposite the flooring body, and that rotates upward with respect to the main body portion or displaces in-plane relatively to the main body portion when the cross member presses against the cross member engagement surface. 仮設足場の作業床又は作業通路を形成する仮設床材のつかみ金具であって、
仮設床材の端部から布方向又は桁方向に突出するように床材本体の端部に突設され、仮設床材を支持又は支承する横架材に係止して仮設床材の荷重を該横架材に伝達する仮設床材のつかみ金具において、
前記床材本体に固定される基部と、前記横架材の上半部外周面に着座するための着座面とを備えた本体部分と、
前記横架材の床材本体側の領域で前記本体部分に設けられた外れ止め部材又は外れ止め部分と、
前記本体部分に回動可能又は面内変位可能に支持又は支承され、前記床材本体とは反対の側において前記横架材の上半部外周面に沿って延びる横架材係合面を備え、前記横架材によって該横架材係合面を押圧することにより、前記本体部分に対して上方に回動し、或いは、該本体部分に対して相対的に面内変位する可動フックとを有し、
前記本体部分の着座面及び前記可動フックの横架材係合面によって画成される横架材収容域に前記横架材を収容するとともに、前記着座面によって仮設床材の荷重を前記横架材に伝達し、
前記横架材の下半部外周面に沿って延びる前記外れ止め部材又は外れ止め部分の横架材係合面と前記横架材との係合又は衝合によって所定寸法以上のつかみ金具の上方変位を阻止し、
前記本体部分の着座面又は前記可動フックの横架材係合面と前記横架材との係合又は衝合によってつかみ金具の水平変位を拘束するようにしたことを特徴とする仮設床材のつかみ金具。 A gripping metal fitting for a temporary floor material forming a work floor or a work passage of a temporary scaffold,
A temporary floor gripping metal fitting is provided at the end of a flooring body so as to protrude from the end of the temporary flooring in the fabric direction or the girder direction, and engages with a cross member that supports or supports the temporary flooring to transmit the load of the temporary flooring to the cross member.
A main body portion including a base portion fixed to the floor material main body and a seating surface for seating on the outer peripheral surface of the upper half of the cross member;
A stopper member or stopper portion provided on the main body portion in the area of the floor material main body side of the cross member;
a movable hook that is supported or supported on the main body portion so as to be rotatable or displaceable in a plane, and has a cross member engagement surface that extends along the outer peripheral surface of the upper half of the cross member on the side opposite to the floor material main body, and that rotates upward with respect to the main body portion or displaces in a plane relative to the main body portion by pressing the cross member engagement surface with the cross member ;
The horizontal member is accommodated in a horizontal member accommodation area defined by the seating surface of the main body portion and the horizontal member engagement surface of the movable hook, and the load of the temporary floor material is transmitted to the horizontal member by the seating surface,
The engagement or collision between the cross member and the cross member engagement surface of the anti-slip member or anti-slip portion extending along the outer peripheral surface of the lower half of the cross member prevents the upward displacement of the gripping metal fitting beyond a predetermined dimension,
A gripping fitting for temporary flooring, characterized in that the horizontal displacement of the gripping fitting is restrained by the engagement or collision between the seating surface of the main body portion or the cross member engagement surface of the movable hook and the cross member. 前記横架材を受入れるための前記横架材収容域の開口部が、前記可動フックの横架材係合面の縁部(13ｄ）と前記外れ止め部材又は外れ止め部分の先端部（5d，12d）との間に形成され、前記本体部分は、前記可動フックを回動可能に支持する枢支軸を有し、該枢支軸は、前記横架材の中心軸線と実質的に平行な枢動軸線を有し、前記可動フックは、その横架材係合面が前記横架材に押圧されることにより、前記枢動軸線を中心に上方に回動し、前記開口部の開口寸法を拡大することを特徴とする請求項２に記載のつかみ金具。 The gripping fixture according to claim 2, characterized in that the opening of the cross member storage area for receiving the cross member is formed between the edge (13d) of the cross member engagement surface of the movable hook and the tip (5d, 12d) of the anti-removal member or anti-removal portion, the main body portion has a pivot shaft that rotatably supports the movable hook, the pivot shaft has a pivot axis that is substantially parallel to the central axis of the cross member, and the movable hook rotates upward about the pivot axis when its cross member engagement surface is pressed against the cross member, thereby expanding the opening dimension of the opening. 前記縁部(13ｄ）と前記先端部（5d，12d）との離間距離(D2)は、前記着座面が前記横架材に着座したつかみ金具の係止位置において前記横架材の直径(D1)よりも小さく、前記可動フックの回動により前記開口部を拡開した状態において前記横架材の直径よりも大きいことを特徴とする請求項３に記載のつかみ金具。 The gripping fixture described in claim 3, characterized in that the distance (D2) between the edge (13d) and the tip (5d, 12d) is smaller than the diameter (D1) of the cross member when the seating surface of the gripping fixture is seated on the cross member and is larger than the diameter of the cross member when the opening is expanded by the rotation of the movable hook. 前記可動フックの先端下面(13b, 68)は、前記着座面が前記横架材に着座したつかみ金具の係止位置において前記横架材の中心軸線の高さ位置よりも下方に位置し、前記可動フックの回動又は面内変位により前記開口部の開口寸法を拡大した状態において前記横架材の中心軸線の高さ位置と実質的に同一又は該高さ位置よりも上方に位置することを特徴とする請求項３又は４に記載のつかみ金具。 A gripping fixture as described in claim 3 or 4, characterized in that the tip underside (13b, 68) of the movable hook is located below the height position of the central axis of the cross member when the seating surface is in the engagement position of the gripping fixture seated on the cross member, and is located substantially the same as or above the height position of the central axis of the cross member when the opening dimension of the opening is expanded by rotation or in-plane displacement of the movable hook. 仮設足場の作業床又は作業通路を形成する仮設床材のつかみ金具であって、
仮設床材の端部から布方向又は桁方向に突出するように床材本体の端部に突設され、仮設床材を支持又は支承する横架材に係止して仮設床材の荷重を該横架材に伝達する仮設床材のつかみ金具において、
前記床材本体に固定される基部と、前記横架材の上半部外周面に着座するための着座面とを備えた本体部分と、
前記横架材の床材本体側の領域で前記本体部分に設けられた外れ止め部材又は外れ止め部分と、
前記本体部分に回動可能又は面内変位可能に支持又は支承され、前記床材本体とは反対の側において前記横架材の上半部外周面に沿って延びる横架材係合面を備え、前記横架材によって該横架材係合面を押圧することにより、前記本体部分に対して上方に回動し、或いは、該本体部分に対して相対的に面内変位する可動フックとを有し、
前記可動フックは、その枢動軸線を中心とする円弧状軌道に沿って延在する湾曲スロットを有し、該スロットを貫通するガイドピンが前記本体部分に突設され、前記枢動軸線を中心とした前記可動フックの回動の角度範囲は、前記スロット及び前記ガイドピンによって規制されることを特徴とする仮設床材のつかみ金具。 A gripping metal fitting for a temporary floor material forming a work floor or a work passage of a temporary scaffold,
A temporary floor gripping metal fitting is provided at the end of a flooring body so as to protrude from the end of the temporary flooring in the fabric direction or the girder direction, and engages with a cross member that supports or supports the temporary flooring to transmit the load of the temporary flooring to the cross member.
A main body portion including a base portion fixed to the floor material main body and a seating surface for seating on the outer peripheral surface of the upper half of the cross member;
A stopper member or stopper portion provided on the main body portion in the area of the floor material main body side of the cross member;
a movable hook that is supported or supported on the main body portion so as to be rotatable or displaceable in a plane, and has a cross member engagement surface that extends along the outer peripheral surface of the upper half of the cross member on the side opposite to the floor material main body, and that rotates upward with respect to the main body portion or displaces in a plane relative to the main body portion by pressing the cross member engagement surface with the cross member ;
A gripping fitting for temporary flooring, characterized in that the movable hook has a curved slot extending along an arcuate path centered on its pivot axis, a guide pin passing through the slot is protruded from the main body portion, and the angular range of rotation of the movable hook centered on the pivot axis is regulated by the slot and the guide pin. 前記枢支軸は、前記横架材の床材本体側の領域に配置され、或いは、前記本体部分の先端部に配置されることを特徴とする請求項３又は４に記載のつかみ金具。 The gripping fixture according to claim 3 or 4, characterized in that the pivot shaft is disposed in an area of the cross member on the floor material body side, or at the tip of the body portion. 仮設足場の作業床又は作業通路を形成する仮設床材のつかみ金具であって、
仮設床材の端部から布方向又は桁方向に突出するように床材本体の端部に突設され、仮設床材を支持又は支承する横架材に係止して仮設床材の荷重を該横架材に伝達する仮設床材のつかみ金具において、
前記床材本体に固定される基部と、前記横架材の上半部外周面に着座するための着座面とを備えた本体部分と、
前記横架材の床材本体側の領域で前記本体部分に設けられた外れ止め部材又は外れ止め部分と、
前記本体部分に回動可能又は面内変位可能に支持又は支承され、前記床材本体とは反対の側において前記横架材の上半部外周面に沿って延びる横架材係合面を備え、前記横架材によって該横架材係合面を押圧することにより、前記本体部分に対して上方に回動し、或いは、該本体部分に対して相対的に面内変位する可動フックとを有し、
前記可動フックは、前記本体部分の側面に突設されたスタッド又は支軸が貫通するスロット又は長孔を有し、該スロット又は長孔と前記スタッド又は支軸との相対変位により、面内変位することを特徴とする仮設床材のつかみ金具。 A gripping metal fitting for a temporary floor material forming a work floor or a work passage of a temporary scaffold,
A temporary floor gripping metal fitting is provided at the end of a flooring body so as to protrude from the end of the temporary flooring in the fabric direction or the girder direction, and engages with a cross member that supports or supports the temporary flooring to transmit the load of the temporary flooring to the cross member.
A main body portion including a base portion fixed to the floor material main body and a seating surface for seating on the outer peripheral surface of the upper half of the cross member;
A stopper member or stopper portion provided on the main body portion in the area of the floor material main body side of the cross member;
a movable hook that is supported or supported on the main body portion so as to be rotatable or displaceable in a plane, and has a cross member engagement surface that extends along the outer peripheral surface of the upper half of the cross member on the side opposite to the floor material main body, and that rotates upward with respect to the main body portion or displaces in a plane relative to the main body portion by pressing the cross member engagement surface with the cross member ;
The movable hook has a slot or long hole through which a stud or shaft protruding from the side of the main body passes, and is a gripping fitting for temporary flooring characterized in that it is displaced in-plane due to relative displacement between the slot or long hole and the stud or shaft. 前記可動フックは、上下方向に間隔を隔てた複数の前記スロット又は長孔と、上下方向に間隔を隔てた複数のスタッド又は支軸とを有することを特徴とする請求項８に記載のつかみ金具。 The gripping fixture according to claim 8, characterized in that the movable hook has a plurality of the slots or elongated holes spaced apart in the vertical direction, and a plurality of studs or shafts spaced apart in the vertical direction. 前記スロット又は長孔と、前記スタッド又は支軸とは、前記横架材の床材本体側の領域に配置され、或いは、前記本体部分の先端部に配置されることを特徴とする請求項８又は９に記載のつかみ金具。 The gripping fixture according to claim 8 or 9, characterized in that the slot or long hole and the stud or support shaft are arranged in an area of the cross member on the floor material body side, or at the tip of the body part. 仮設足場の作業床又は作業通路を形成する仮設床材のつかみ金具であって、
仮設床材の端部から布方向又は桁方向に突出するように床材本体の端部に突設され、仮設床材を支持又は支承する横架材に係止して仮設床材の荷重を該横架材に伝達する仮設床材のつかみ金具において、
前記床材本体に固定される基部と、前記横架材の上半部外周面に着座するための着座面とを備えた本体部分と、
前記横架材の床材本体側の領域で前記本体部分に設けられた外れ止め部材又は外れ止め部分と、
前記本体部分に回動可能又は面内変位可能に支持又は支承され、前記床材本体とは反対の側において前記横架材の上半部外周面に沿って延びる横架材係合面を備え、前記横架材によって該横架材係合面を押圧することにより、前記本体部分に対して上方に回動し、或いは、該本体部分に対して相対的に面内変位する可動フックとを有し、
前記本体部分の着座面及び前記可動フックの横架材係合面は、前記横架材の外周面に面接触し又は近接して延びるように湾曲しており、前記横架材の下半部外周面に沿って延びる前記外れ止め部材又は外れ止め部分の横架材係合面は、前記着座面が前記横架材に着座したつかみ金具の係止位置において前記横架材から離間し、前記可動フックの横架材係合面は、該係止位置において前記横架材から僅かに離間し、或いは、該可動フックの自重により前記横架材の外周面に接触し又は着座することを特徴とする仮設床材のつかみ金具。 A gripping metal fitting for a temporary floor material forming a work floor or a work passage of a temporary scaffold,
A temporary floor gripping metal fitting is provided at the end of a flooring body so as to protrude from the end of the temporary flooring in the fabric direction or the girder direction, and engages with a cross member that supports or supports the temporary flooring to transmit the load of the temporary flooring to the cross member.
A main body portion including a base portion fixed to the floor material main body and a seating surface for seating on the outer peripheral surface of the upper half of the cross member;
A stopper member or stopper portion provided on the main body portion in the area of the floor material main body side of the cross member;
a movable hook that is supported or supported on the main body portion so as to be rotatable or displaceable in a plane, and has a cross member engagement surface that extends along the outer peripheral surface of the upper half of the cross member on the side opposite to the floor material main body, and that rotates upward with respect to the main body portion or displaces in a plane relative to the main body portion by pressing the cross member engagement surface with the cross member ;
A gripping fitting for temporary flooring, characterized in that the seating surface of the main body and the cross member engagement surface of the movable hook are curved so as to be in face contact with or extend close to the outer peripheral surface of the cross member, and the cross member engagement surface of the anti-slip member or anti-slip portion extending along the outer peripheral surface of the lower half of the cross member is separated from the cross member at the engagement position of the gripping fitting seated on the cross member, and the cross member engagement surface of the movable hook is slightly separated from the cross member at the engagement position, or contacts or sits on the outer peripheral surface of the cross member due to the weight of the movable hook. 前記開口部（λ）の開口平面（ω）の垂線方向（μ）は、水平面(HL)に対して３０～７０度の角度範囲内の傾斜角（θ）をなす方向に配向されることを特徴とする請求項３又は４に記載のつかみ金具。 The gripping fixture according to claim 3 or 4, characterized in that the perpendicular direction (μ) of the opening plane (ω) of the opening (λ) is oriented in a direction that forms an inclination angle (θ) within an angle range of 30 to 70 degrees with respect to the horizontal plane (HL). 前記外れ止め部材又は外れ止め部分は、前記本体部分に一体化し又は固定された固定爪、或いは、前記本体部分に取付けられた重力式又はセルフロック式の可動爪からなることを特徴とする請求項１乃至１２のいずれか１項に記載のつかみ金具。 The gripping fixture according to any one of claims 1 to 12, characterized in that the anti-removal member or anti-removal portion is a fixed claw that is integrated with or fixed to the main body portion, or a gravity-type or self-locking movable claw that is attached to the main body portion. 請求項１乃至１３のいずれか１項に記載されたつかみ金具を少なくとも一方の端部に備えた仮設床材。 A temporary flooring material having a gripping fixture as described in any one of claims 1 to 13 at at least one end. 前記床材本体は、一体成形された単一の床材部品から構成され、或いは、複数の床材部品を並列且つ一体的に連結した複合構造を有し、
前記床材部品は、幅３５０mm以下且つ長さ４００mm以上のアルミ押出形材からなり、
該押出形材は、前記作業床又は作業通路の床面を形成する床板部分と、長手方向に延びる補剛リブとを有することを特徴とする請求項１４に記載の仮設床材。 The flooring body is composed of a single flooring part that is integrally molded, or has a composite structure in which a plurality of flooring parts are connected in parallel and integrally;
The flooring component is made of an aluminum extrusion material having a width of 350 mm or less and a length of 400 mm or more,
15. The temporary floor material according to claim 14, wherein the extruded member has a floor plate portion which forms the floor surface of the work floor or work passageway, and a stiffening rib extending in the longitudinal direction. 前記床材本体の床面を布方向に延長する床面延設部材を更に有し、
前記着座面が前記横架材に着座したつかみ金具の係止位置において、前記横架材の中心軸線は、前記床材本体の下面よりも下方の高さ位置に位置し、前記床材本体の端部は、前記横架材から１５mm以上の水平距離(St)を隔てて離間し、前記床面と前記横架材の頂部との高低差(Sh)は、１５mm以上の寸法に設定され、前記横架材の直径延長線上の寸法(S1,S2)として１５mm以上の寸法を有する自由空間が前記横架材の外周域に形成されることを特徴とする請求項１４又は１５に記載の仮設床材。 Further comprising a floor surface extension member that extends the floor surface of the floor material body in the fabric direction,
A temporary floor material as described in claim 14 or 15, characterized in that, when the seating surface is in the engaging position of the gripping fitting seated on the cross member, the central axis of the cross member is located at a height position below the underside of the floor material main body, the end of the floor material main body is separated from the cross member by a horizontal distance (St) of 15 mm or more, the height difference (Sh) between the floor surface and the top of the cross member is set to a dimension of 15 mm or more, and a free space having a dimension (S1, S2) of 15 mm or more on the diameter extension line of the cross member is formed in the outer periphery of the cross member. 請求項１４乃至１６のいずれか１項に記載された仮設床材の施工方法であって、
仮設構造物の横架材に架設又は懸架された前記仮設床材を該横架材から撤去するために、該仮設床材の少なくとも一方の端部に配置された前記つかみ金具を前記横架材から離脱させる作業において、前記外れ止め部材又は外れ止め部分のロック解除操作を行うことなく、前記仮設床材を斜め上方(η)に移動させることにより、前記可動フックの横架材係合面を前記横架材の上半部外周面に摺接させて該可動フックを受動的に回動又は面内変位せしめ、前記つかみ金具を前記横架材から離脱させることを特徴とする仮設床材の施工方法。 A method for constructing the temporary floor material according to any one of claims 14 to 16, comprising the steps of:
A method of constructing a temporary floor material, in which the gripping fittings arranged at at least one end of the temporary floor material are detached from the cross member in order to remove the temporary floor material erected or suspended on the cross member of a temporary structure, the temporary floor material is moved diagonally upward (η) without unlocking the anti-detachment member or anti-detachment portion, thereby causing the cross member engagement surface of the movable hook to slide against the outer peripheral surface of the upper half of the cross member, passively rotating or displacing the movable hook in-plane, and detaching the gripping fittings from the cross member. 前記横架材を斜め上方に移動させる前に、前記つかみ金具を僅かに上方に持ち上げ、前記外れ止め部材又は外れ止め部分の横架材係合面と前記横架材の下半部外周面とを過渡的に近接、当接又は衝合させることを特徴とする請求項１７に記載の仮設床材の施工方法。 The construction method for temporary flooring described in claim 17, characterized in that before the cross member is moved diagonally upward, the gripping metal fitting is lifted slightly upward, and the cross member engagement surface of the slip-stop member or slip-stop portion and the outer peripheral surface of the lower half of the cross member are brought into transitional proximity, contact, or collision. 前記仮設床材を仮設構造物の横架材に架設又は懸架するために、該仮設床材の少なくとも一方の端部に配置された前記つかみ金具を前記横架材に係止する作業において、前記外れ止め部材又は外れ止め部分のロック解除操作を行うことなく、前記仮設床材を斜め下方に移動させて前記つかみ金具を前記横架材に接近させることにより、前記可動フックの横架材係合面を前記横架材の上半部外周面に摺接させて該可動フックを受動的に回動又は面内変位せしめ、前記着座面を前記横架材の上半部外周面に着座させることを特徴とする請求項１７又は１８に記載の仮設床材の施工方法。 The construction method for temporary flooring described in claim 17 or 18, characterized in that in the operation of engaging the gripping fittings arranged at at least one end of the temporary flooring with the cross member of a temporary structure in order to erect or suspend the temporary flooring on the cross member, the temporary flooring is moved diagonally downward to bring the gripping fittings closer to the cross member without performing an unlocking operation of the slip-stop member or slip-stop portion, so that the cross member engagement surface of the movable hook is brought into sliding contact with the outer peripheral surface of the upper half of the cross member, passively rotating or displacing the movable hook in-plane, and the seating surface is seated on the outer peripheral surface of the upper half of the cross member. 請求項１５又は１６に記載され、各端部の左右のつかみ金具の外れ止め部材又は外れ止め部分として、重力式セルフロック機構(7,8)を有する可動爪(5)を備えた仮設床材の施工方法であって、
仮設構造物の横架材に架設又は懸架された前記仮設床材を該横架材から撤去するために前記つかみ金具を前記横架材から離脱させる作業において、前記外れ止め部材又は外れ止め部分のロック解除操作を行うとともに、前記可動フックを回動又は面内変位させて前記つかみ金具の開口部(λ)を拡開し、前記つかみ金具を前記横架材から離間せしめることを特徴とする仮設床材の施工方法。 A method for constructing a temporary floor material as described in claim 15 or 16, which is provided with movable claws (5) having gravity-type self-locking mechanisms (7, 8) as the stopper members or stopper portions of the left and right gripping metal fittings at each end,
A method of constructing a temporary floor material, in which the gripping fittings are detached from a cross member of a temporary structure in order to remove the temporary floor material erected or suspended on the cross member from the cross member, the method comprising the steps of: unlocking the anti-detachment member or anti-detachment portion; rotating or displacing the movable hook in-plane to widen the opening (λ) of the gripping fittings and separating them from the cross member.
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JP2001164750A (en) 1999-12-10 2001-06-19 Kawatetsu Kizai Kogyo Co Ltd Cloth frame with board
JP2002161636A (en) 2000-11-24 2002-06-04 Alinco Inc Scaffolding board
WO2008013460A1 (en) 2006-07-27 2008-01-31 Wls Intellectual Property Limited A scaffolding platform

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JP2001164750A (en) 1999-12-10 2001-06-19 Kawatetsu Kizai Kogyo Co Ltd Cloth frame with board
JP2002161636A (en) 2000-11-24 2002-06-04 Alinco Inc Scaffolding board
WO2008013460A1 (en) 2006-07-27 2008-01-31 Wls Intellectual Property Limited A scaffolding platform

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