JP2004285791A

JP2004285791A - Antecedent handrail

Info

Publication number: JP2004285791A
Application number: JP2003082058A
Authority: JP
Inventors: Tatsuo Ono; 辰雄小野
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-25
Filing date: 2003-03-25
Publication date: 2004-10-14
Anticipated expiration: 2023-03-25
Also published as: JP4069976B2

Abstract

PROBLEM TO BE SOLVED: To provide an antecedent handrail, made compact, light-weight, and excellent in economical efficiency and strength. SOLUTION: This antecedent handrail includes: a pair of right and left vertical supports V1, V2 fixed between the vertical materials T, T of a pair of building frames and fixed to the respective vertical materials T, T; and a pair of upper and lower cross supports 1, 2 stretched between the respective vertical supports V1, V2. The respective cross supports 1, 2 are connected by the central rod 3, and the respective vertical supports V1, V2 are composed of upper vertical supports 5L, 5R and lower vertical supports 6L, 6R. A pair of cross supports 1, 2 are connected between the respective upper vertical supports 5L, 5R, and the lower vertical supports 6L, 6R are provided with a fixing means for fixing the respective lower vertical supports 6L, 6R to the vertical material T. The upper vertical supports 5L, 5R are mounted on the lower vertical supports 6L, 6R to move in the axial direction. COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、建設現場、土木工事現場において使用される枠組足場の建枠に取付けられる先行手摺の改良に関する。
【０００２】
【従来の技術】
従来から建物等の建築の際には枠組足場が設置され、この枠組足場上で作業者が歩行し、作業を行うが、作業者の安全のために枠組足場の建枠に手摺が取付けられる。
【０００３】
そして、特に枠組足場を上方に積層して高層化した場合には、手摺の設置されていない枠組足場上で作業者が作業することは危険であるため、作業者が階下の枠組足場上で階上の枠組足場の手摺を取付けられるように、階下の枠組足場の縦材の上方に固定可能なようにした先行手摺が使用される。
【０００４】
すなわち、作業者が階下の枠組足場上で階上の枠組足場の先行手摺を取付けることができるので、枠組足場を積層する際には、作業者は常に先行手摺の設置された枠組足場上で作業することができ、作業者の安全が図られている。
【０００５】
さて、このように先行手摺が縦材に取付けられるが、この先行手摺は縦材間に掛け渡すように設置され、作業者の安全を図るためにどうしても大きくなり嵩張ってしまうが、枠組足場に使用される足場板の巾は狭いので、作業者がこの先行手摺を運搬、取付作業する際に不便である。
【０００６】
そこで、この先行手摺をコンパクトに折畳可能な先行手摺の提案がなされている（たとえば、特許文献１参照）。
【０００７】
【特許文献１参照】
特開２００２−２０１７９２号公報（第３頁左欄第２９行目から第３頁右欄第３行目、図１から図３）
【０００８】
【発明が解決しようとする課題】
しかしながら、この従来の折畳可能な先行手摺は、コンパクトになる点で運搬、保管に非常に便利であるが、以下の弊害がある。
【０００９】
すなわち、先行手摺をコンパクトにするために部品点数が多くなるとともに、先行手摺の重量が重くなってしまう。すると、この重量増加は先行手摺の運搬に際し却って不便となり、特開２００２−２０１７９２号公報の構成では部品点数が非常に多く、構造が複雑であり製造コストが悪化してしまう。
【００１０】
また、特開２００２−２０１７９２号公報の構成では、折畳の方法が複雑で、その取付の際の組立が面倒となってしまうと同時に、可動部分が非常に多いので強度上問題があると指摘される可能性もある。
【００１１】
そこで、本発明は上記した不具合を改善するために創案されたものであって、その目的とするところは、コンパクト化可能であっても、軽量、経済的、かつ、強度に優れる先行手摺を提供することである。
【００１２】
【課題を解決するための手段】
本発明の第１の課題解決手段は、一対の建枠の縦材間に固定され、各縦材に固定される左右一対の縦支柱と各縦支柱間に掛け渡される上下一対の横支柱とを備えた先行手摺において、各横支柱を略中央でロッドにより連結し、各縦支柱をそれぞれ上側縦支柱と下側縦支柱とで構成し、各上側縦支柱間に一対の横支柱を連結し、各下側縦支柱に各下側縦支柱を上記縦材に固定する固定手段を設けるとともに、上側縦支柱が下側縦支柱に軸方向に沿って移動可能に装着されてなることを特徴とする。
【００１３】
本発明の第２の課題解決手段は、一対の建枠の縦材間に固定され、各縦材に固定される左右一対の縦支柱と各縦支柱間に掛け渡される上下一対の横支柱とを備えた先行手摺において、各横支柱を略中央でロッドにより連結し、下側の横支柱に基端を回転自在に軸支された左右一対の斜材を設け、各縦支柱をそれぞれ上側縦支柱と下側縦支柱とで構成し、各上側縦支柱間に一対の横支柱を連結し、一方の下側縦支柱と一方の斜材とを係止する係止手段と他方の下側縦支柱と他方の斜材とを係止する係止手段と各下側縦支柱に各下側縦支柱を上記縦材に固定する固定手段を設けるとともに、上側縦支柱が下側縦支柱に軸方向に沿って移動可能に装着されてなることを特徴とする。
【００１４】
本発明の第３の課題解決手段は、一対の建枠の縦材間に固定され、各縦材に固定される左右一対の縦支柱と各縦支柱間に掛け渡される上下一対の横支柱とを備えた先行手摺において、各横支柱をそれぞれ左側横支柱と右側横支柱とで構成し、左側の縦支柱に各左側横支柱の一端を回転自在に軸支させるとともに右側の縦支柱に各右側横支柱の一端を回転自在に軸支させ、先端側で上側の横支柱の左側横支柱の他端と右側横支柱の他端とを回転自在に軸支するとともに基端側で下側の横支柱の左側横支柱の他端と右側横支柱の他端とを回転自在に軸支するロッドを設け、各縦支柱に各縦支柱を上記縦材に固定する固定手段を設けてなることを特徴とする。
【００１５】
本発明の第４の課題解決手段は、一対の建枠の縦材間に固定され、各縦材に固定される左右一対の縦支柱と各縦支柱間に掛け渡される上下一対の横支柱とを備えた先行手摺において、各横支柱をそれぞれ左側横支柱と右側横支柱とで構成し、左側の縦支柱に各左側横支柱の一端を回転自在に軸支させるとともに右側の縦支柱に各右側横支柱の一端を回転自在に軸支させ、先端側で上側の横支柱の左側横支柱の他端と右側横支柱の他端とを回転自在に軸支するとともに基端側で下側の横支柱の左側横支柱の他端と右側横支柱の他端とを回転自在に軸支するロッドと先端側が下側の左側横支柱にスライドおよび回転自在に装着され基端側が左側縦支柱に回転自在に軸支された左側斜材と先端側が下側の右側横支柱にスライドおよび回転自在に装着され基端側が右側縦支柱に回転自在に軸支された右側斜材とを設け、各縦支柱に各縦支柱を上記縦材に固定する固定手段を設けてなることを特徴とする。
【００１６】
本発明の第５の課題解決手段は、一対の建枠の縦材間に固定され、各縦材に固定される左右一対の縦支柱と各縦支柱間に掛け渡される上下一対の横支柱とを備えた先行手摺において、各縦支柱が本体と本体に回転自在に軸支された先端部とで構成される下側縦支柱と中空な上側縦支柱とを備え、当該先端部が上側縦支柱内にスライド自在に挿入されてなり、下側の横支柱もしくは上側の横支柱にスライド自在に挿入されたスライド部材と先端でスライド部材が挿入されていない側の横支柱の略中央部を回転自在に軸支し基端で上記スライド部材を回転自在に軸支するロッドとを設け、各上側縦支柱の上端部を上側の横支柱に結合するとともに、下側の横支柱の両端をそれぞれ各下側縦支柱にスライド自在に装着し、各下側縦支柱の本体に各縦支柱を上記縦材に固定する固定手段を設けてなるたことを特徴とする。
【００１７】
本発明の第６の課題解決手段は、一対の建枠の縦材間に固定され、各縦材に固定される左右一対の縦支柱と各縦支柱間に掛け渡される上下一対の横支柱とを備えた先行手摺において、各横支柱を略中央でロッドにより連結し、各縦支柱をそれぞれ上側縦支柱と下側縦支柱とで構成し、各上側縦支柱間に一対の横支柱を連結し、各下側縦支柱に各下側縦支柱を上記縦材に固定する固定手段を設けるとともに、それぞれ各上側縦支柱が対応する各下側縦支柱に回転自在に軸支されてなることを特徴とする。
【００１８】
本発明の第７の課題解決手段は、一対の建枠の縦材間に固定され、各縦材に固定される左右一対の縦支柱と各縦支柱間に掛け渡される上下一対の横支柱とを備えた先行手摺において、各横支柱をそれぞれ一方の縦支柱に連結されるアウターチューブとアウターチューブ内に移動自在に挿入され他方の縦支柱に連結されるインナーロッドとで構成するとともに、各縦支柱をそれぞれ上側縦支柱と下側縦支柱とで構成し、各上側縦支柱間に一対の横支柱を連結し、各下側縦支柱に各下側縦支柱を上記縦材に固定する固定手段を設けるとともに、それぞれ各上側縦支柱が各下側縦支柱に回転自在に軸支されてなることを特徴とする。
【００１９】
本発明の第８の課題解決手段は、一対の建枠の縦材間に固定され、各縦材に固定される左右一対の縦支柱と各縦支柱間に掛け渡される上下一対の横支柱とを備えた先行手摺において、各横支柱をそれぞれ左側横支柱と、右側横支柱と、左側横支柱と右側横支柱とを水平回転自在に軸支する連結部とで構成し、各縦支柱に各縦支柱を上記縦材に固定する固定手段を設けてなることを特徴とする。
【００２０】
本発明の第９の課題解決手段は、一対の建枠の縦材間に固定され、各縦材に固定される左右一対の縦支柱と各縦支柱間に掛け渡される上下一対の横支柱とを備えた先行手摺において、先端および基端で各横支柱の略中央部を回転自在に軸支するロッドを設け、左側の縦支柱に各横支柱の先端を回転自在に軸支させるとともに右側の縦支柱に各横支柱の基端を回転自在に軸支させ、各縦支柱に各縦支柱を上記縦材に固定する固定手段を設けてなることを特徴とする。
【００２１】
本発明の第１０の課題解決手段は、一対の建枠の縦材間に固定され、各縦材に固定される左右一対の縦支柱と各縦支柱間に掛け渡される上下一対の横支柱とを備えた先行手摺において、各縦支柱が本体と本体に回転自在に軸支された先端部とで構成される上側縦支柱と中空な下側縦支柱とを備え、当該本体が下側縦支柱内にスライド自在に挿入されてなり、上側の横支柱もしくは下側の横支柱にスライド自在に挿入されたスライド部材と先端でスライド部材が挿入されていない側の横支柱の略中央部を回転自在に軸支し基端で上記スライド部材を回転自在に軸支するロッドとを設け、各上側縦支柱の上端部を上側の横支柱に結合するとともに、下側の横支柱の両端をそれぞれ上側縦支柱の本体にスライド自在に装着し、下側の横支柱に基端を回転自在に軸支された左右一対の斜材を設け、一方の下側縦支柱と一方の斜材とを係止する係止手段と他方の下側縦支柱と他方の斜材とを係止する係止手段と各下側縦支柱に各下側縦支柱を上記縦材に固定する固定手段を設けたことを特徴とする。
【００２２】
本発明の第１１の課題解決手段は、一対の建枠の縦材間に固定され、各縦材に固定される左右一対の縦支柱と各縦支柱間に掛け渡される上下一対の横支柱とを備えた先行手摺において、各縦支柱が本体と本体に回転自在に軸支された先端部とで構成され、上側の横支柱もしくは下側の横支柱にスライド自在に挿入されたスライド部材と先端でスライド部材が挿入されていない側の横支柱の略中央部を回転自在に軸支し基端で上記スライド部材を回転自在に軸支するロッドとを設け、各縦支柱の先端部を上側の横支柱に結合するとともに、下側の横支柱の両端をそれぞれ縦支柱の本体にスライド自在に装着し、各縦支柱の本体にスライド自在に縦材を抱持するプレートもしくは縦材を挟持する挟持具を装着し、各縦支柱の本体に縦材を挟持する挟持具を設けてなり、プレートは、プレート本体と、プレート本体の先端側から基端側に向って設けた切欠と、切欠の中間部に設けた縦材を抱持する抱持孔とで構成され、挟持具は、挟持具本体と、挟持具本体の先端側に設けた縦材を挿入する切欠と、挟持具本体の先端に設けた上記切欠と協働して縦材を挟持する楔機構とで構成されたことを特徴とする。
【００２３】
本発明の第１２の課題解決手段は、第１から第１０のいずれかの課題解決手段において、固定手段が、基端側が各縦支柱に固着され縦材を抱持するプレートと、基端側が各縦支柱に固着され縦材を挟持する挟持具とからなり、プレートは、プレート本体と、プレート本体の先端側から基端側に向って設けた切欠と、切欠の中間部に設けた縦材を抱持する抱持孔とで構成され、挟持具は、挟持具本体と、挟持具本体の先端側に設けた縦材を挿入する切欠と、挟持具本体の先端に設けた上記切欠と協働して縦材を挟持する楔機構とで構成されたことを特徴とする。
【００２４】
本発明の第１３の課題解決手段は、第１から第１０のいずれかの課題解決手段において、固定手段が、基端側が各縦支柱に固着され縦材を挟持する２つの挟持具からなり、挟持具が、挟持具本体と、挟持具本体の先端側に設けた縦材を挿入する切欠と、挟持具本体の先端に設けた上記切欠と協働して縦材を挟持する楔機構とで構成されたことを特徴とする。
【００２５】
本発明の第１４の課題解決手段は、第１から第１０のいずれかの課題解決手段において、固定手段が、基端側が一方の縦支柱に固着され縦材を抱持するプレートと、基端側が一方の縦支柱に固着され縦材を挟持する挟持具と、他方の縦支柱に設けた一対の引掛部材とからなり、プレートは、プレート本体と、プレート本体に設けた隣在する先行手摺の一方の引掛部材が挿入される挿入孔と、プレート本体の先端側から基端側に向って設けた切欠と、切欠の中間部に設けた縦材を抱持する抱持孔とで構成され、挟持具は、挟持具本体と、挟持具本体に設けた隣在する先行手摺の他方の引掛部部材が挿入される挿入孔と、挟持具本体の先端側に設けた縦材を挿入する切欠と、挟持具本体の先端に設けた上記切欠と協働して縦材を挟持する楔機構とで構成されたことを特徴とする。
【００２６】
本発明の第１５の課題解決手段は、第１から第１４のいずれかの課題解決手段において、各横支柱の左右端近傍および各縦支柱上であって上側の横支柱が設けられている位置と下側の横支柱が設けられている位置との間にそれぞれ脆弱部を設けたことを特徴とする。
【００２７】
【発明の実施の形態】
以下、図１から図３６に基づいて本発明の実施の形態について説明する。本発明には、図１から図８に示す第１の実施の形態と、図９から図１１に示す第２の実施の形態と、図１２から図１５に示す第３の実施の形態と、図１６から図１８に示す第４の実施の形態と、図１９から図２１に示す第５の実施の形態と、図２２から図２３に示す第６の実施の形態と、図２４から図２５に示す第７の実施の形態と、図２６から図２９に示す第８の実施の形態と、図３０から図３１に示す第９の実施の形態と、図３２から図３４に示す第１０の実施の形態と、図３５および図３６に示す第１１の実施の形態とがある。
【００２８】
図１から図８に示す第１の実施の形態における先行手摺は、図１に示すように、一対の建枠の縦材Ｔ，Ｔ間に固定され、各縦材Ｔ，Ｔに固定される左右一対の縦支柱Ｖ１，Ｖ２と、各縦支柱Ｖ１，Ｖ２間に掛け渡される上下一対の横支柱１，２と、各横支柱１，２をその略中央で連結するロッド３と、固定手段たる一方の縦支柱Ｖ１に設けた縦材Ｔを抱持するプレートＦと縦材Ｔを挟持する挟持具Ｋと他方の縦支柱Ｖ２に設けた一対の引掛部材Ｈ１，Ｈ２とから構成されている。
【００２９】
以下、詳細について説明すると、図１に示すように、各縦支柱Ｖ１，Ｖ２はそれぞれ上側縦支柱５Ｌ，５Ｒと下側縦支柱６Ｌ，６Ｒとで構成され、上側縦支柱５Ｌ，５Ｒの形状は中空パイプ状であり、他方、下側縦支柱６Ｌ，６Ｒは図６、図７に示すように断面略Ｃ字状の形状をしており、この各下側縦支柱６Ｌ，６Ｒ内にそれぞれ上側縦支柱５Ｌ，５Ｒが図１中垂直方向にスライド自在に挿入されている。そして、この各下側縦支柱６Ｌ，６Ｒにはその上下に孔４，４が設けられるとともに、上側縦支柱５Ｌ，５Ｒの下端近傍にも孔４に対応する孔１３が設けられている。また、各上側縦支柱５Ｌ，５Ｒの図１中下方には略棒状のハンドル７，７が設けられている。
【００３０】
また、それぞれの上側縦支柱５Ｌ，５Ｒ内方には、図２に示すように、それぞれ上側縦支柱５Ｌと下側縦支柱６Ｌとの図１中垂直方向の相対移動および上側縦支柱５Ｒと下側縦支柱６Ｒとの図１中垂直方向の相対移動を規制する規制部材Ｊを構成するバネＢと係止部材１０が設けられている。バネＢは長方形の金属板を折り曲げた形状の板バネであって、一方の腕には係止部材１０を挿入する孔（付示せず）が設けられており、他方、この孔（付示せず）に挿入される係止部材１０は、先端が球状の頭１１と、この頭の基端部から延設されるスカート部１２とから構成され、この頭１１とスカート部１２は一体的に構成されている。なお、この頭１１とスカート部１２は、一体成形されてもよいし、頭１１にスカート部１２を螺合等により結合して一体的に構成すればよい。
【００３１】
そして、このように構成された規制部材Ｊは、上述の上側縦支柱５Ｌ，５Ｒに設けた各孔１３，１３に頭１０がバネＢにより附勢され突出するように上側縦支柱５Ｌ，５Ｒ内に設けられている。すなわち、規制部材Ｊは、左右の上側縦支柱５Ｌ，５Ｒにそれぞれ１つ設けられているので、合計で２箇所に設けられていることとなる。
【００３２】
さらに、このように構成された各上側縦支柱５Ｌ，５Ｒをそれぞれ図１に示すように下側縦支柱６Ｌ，６Ｒ内に挿入するが、ちょうど上述の孔１３が、下側縦支柱６Ｌ，６Ｒの各孔４，４と重なりあうと、規制部材Ｊの頭１０がバネＢにより附勢されており、孔４内に突出するようになるので、これにより、各上側縦支柱５Ｌ，５Ｒが下側縦支柱６Ｌ，６Ｒに対する移動が規制されることとなる。ここで、各下側縦支柱６Ｌ，６Ｒには、上下２箇所に孔４，４が穿設して設けられているので、各上側縦支柱５Ｌ，５Ｒは、下側縦支柱６Ｌ，６Ｒに対し２箇所で移動が規制される。すなわち、各縦支柱Ｖ１、Ｖ２を最伸長状態および最収縮状態に維持することができることとなる。なお、この下側縦支柱６Ｌに対して上側縦支柱５Ｌを移動させる場合には、規制部材Ｊの頭１０を上側縦支柱５Ｌ内に押し込んで、頭１０と孔４との係合を解くことにより自由に移動させることができる。したがって、このようなバネと係止部材を組み合わせた簡単な構造の規制部材Ｊにより、各部が固定されるので、容易に先行手摺の組立およびコンパクト化が可能であり、また、規制部材Ｊは先行手摺内部に設けられているので、規制部材Ｊが先行手摺から脱落することがなく、高所から規制部材Ｊが落下する危険がないので先行手摺の安全性が向上すると同時に、規制部材Ｊの紛失が防止される。なお、このことは、同様の規制部材を設けている後述の他の実施の形態においても同様の効果を奏するものである。
【００３３】
また、各上側縦支柱５Ｌ，５Ｒには、その上下に横支柱１，２の端部側がそれぞれ連結されており、上下の横支柱１，２は、その略中央をロッド３で連結されている。なお、先行手摺軽量化のために横支柱１，２およびロッド３も中空のパイプ材から成形されている。すなわち、各上側縦支柱５Ｌ，５Ｒと各横支柱１，２は枠体となっている。このように、枠体とされているので、強度面で従来の先行手摺よりも優れている。
【００３４】
さらに、一方の下側縦支柱６Ｌには、当該下側縦支柱６Ｌを縦材Ｔに固定するためのプレートＦと、挟持具Ｋが溶接等により固着されて設けられている。このプレートＦは、図６に示すように、プレート本体２０と、プレート本体２０の先端側から基端側に向かって設けた切欠２１と、切欠２１の中間部に設けた縦材Ｔを抱持する抱持孔２２と、プレート本体２０に設けた後述する引掛部材Ｈ１が挿入される孔２３とで構成され、その基端側が下側縦支柱６Ｌの略中央側部に固着されている。そして、プレート本体２０は平板な板で形成され、その側方には対向する一対の立ち上り部２４，２５が設けられている。この立ち上り部２４、２５は強度を補償するために設けられているが、特に設けなくとも使用可能である。
【００３５】
他方、挟持具Ｋは、図７に示すように、挟持具本体２７と、挟持具本体２７の先端側に設けた縦材Ｔを挿入する切欠３２と、挟持具本体２７の先端に設けた上記切欠３２と協働して縦材Ｔを挟持する楔機構Ｕと、挟持具本体２７に設けた後述する引掛部材Ｈ２が挿入される孔３３とで構成され、その基端側が縦支柱６Ｌの下端側部近傍に固着されている。そして、挟持具本体２７は平板な板で形成され、その側方には対向する一対の立ち上り部３０，３１が設けられている。この立ち上り部３０、３１は強度を補償するために設けられているが、特に設けなくとも使用可能である。
【００３６】
また、楔機構Ｕは、楔２８と楔２８を固定する略Ｕ字状の固定具２９とで構成され、挟持具本体２７の下面に固定具２９のＵ字の開口端側が接合されており、楔２８が挟持具本体２７と上記固定具２９でつくられるスリットに挿入される。
【００３７】
さて、この下側縦支柱６Ｌの縦材Ｔへの取付け方であるが、先ず、縦材Ｔの上方から、プレートＦの抱持孔２２に縦材Ｔを挿入する。このとき、プレートＦには上記切欠２１を設けてあるので、切欠２１内を縦材Ｔに取付けられるであろう種々の部材（図示せず）が通過することができるから、上記の種々の部材が邪魔になることはない。
【００３８】
つぎに、縦材Ｔを挟持具Ｋの切欠３２内に挿入し、楔２８を側方から固定具２９と挟持具本体２７とでつくられるスリットに挿入しながら、切欠３２方向に打ち込む。すなわち、上記切欠３２と楔２８とで、縦材Ｔを挟持することになり、挟持具Ｋと縦材Ｔとが固定される。すると、下側縦支柱６Ｌが縦材Ｔに固定される。
【００３９】
また、他方の下側縦支柱６Ｒには、その下端およびその中央側部には引掛部材Ｈ１，Ｈ２が溶接等により固着されている。そして、この引掛部材Ｈ１，Ｈ２は、それぞれ下側縦支柱６Ｒに固着される基端部１４と、基端部１４から延設される傾斜部１５と、傾斜部１５から垂下される挿入部１６とで構成されている。そして、下側縦支柱６Ｒを縦材Ｔに固定する際には、引掛部材Ｈ１，Ｈ２のそれぞれの挿入部１６，１６を、図４に示すように、それぞれ隣り合う下側縦支柱６ＲのプレートＦの孔２３と挟持具Ｋの孔３３に挿入する。したがって、第１の実施の形態の先行手摺にあっては、図４に示すように、隣り合う先行手摺と協働してことにより縦材Ｔに固定することができる。また、両方の下側縦支柱６Ｌ，６ＲにプレートＦと挟持具Ｋを設けて縦材Ｔ，Ｔに先行手摺を固定するとしてもよいが、上述のように、他方の下側縦支柱に引掛部材を設けることにより、先行手摺を軽量なものとすることができるので、運搬に便利で、製造コストも低減される。なお、この先行手摺にあっては、上記したプレート、挟持具、引掛部材を備えているので、図４に示すように、各下側縦支柱６Ｌ，６Ｒをそれぞれ縦材Ｔ，Ｔの上方に固定することができる。すなわち、このように、階下の枠組足場上から階上の先行手摺を取付けることができることとなる。なお、図示したところでは、一方の下側縦支柱６Ｌに、プレートＦと挟持具Ｋを１つずつ設けているが、プレートＦに換えて挟持具Ｋとし、すなわち、挟持具Ｋのみを２つ設けることとしてもよい。すると、プレートＦと挟持具Ｋとで固定する場合は縦材Ｔを上方に積層していくと先行手摺を移動することができなくなるが、挟持具Ｋのみの場合には、楔を抜くことで、縦材Ｔが積層されていても、縦材Ｔから取り外すことができるので便利である。なお、他方の下側縦支柱６Ｒにも同様に２つの挟持具Ｋを設けるとしてもよい。ちなみに、他方の下側縦支柱６ＲにもプレートＦおよび挟持具Ｋを設ける場合には、プレートＦおよび挟持具Ｋには引掛部材Ｈ１，Ｈ２を挿入する孔２３，３３を設けなくてもよく、このことは他の実施の形態でも同様である。また、図４に示したところでは、先行手摺には、爪先板３００が着脱自在に取付けられている。この爪先板３００は、矩形の爪先板本体３００ａの下端から図４中背面に向けて延設される平行部（図示せず）とを備えＬ字状の形状をしており、図４中左右上方には孔３０１，３０１が穿設されている。そして、先行手摺の左右の下側縦支柱６Ｌ，６Ｒには、上記爪先板３００のそれぞれの孔３０１，３０１に挿入可能な引掛部（図示せず）を設けて爪先板３００をこの先行手摺に取付けることができるようになっている。なお、この引掛部（図示せず）は、右側の下側縦支柱６Ｒに設けている引掛部材Ｈ１，Ｈ２の挿入部１６を図４中上方に向けたものとすればよい。また、先行手摺に取付けられた爪先板３００の平行部（図示せず）は、建枠に取付けられるであろう足場板と爪先板３００との間に隙間が生じることがないように設けられているものである。したがって、この爪先板３００にあっては、上記の足場板との間に隙間が生じることが無いので、作業員が足場板を踏み外して下方に落下したり工具等が足場板より下方に落下したりすることが防止され、安全性が向上する。なお、先行手摺に爪先板３００を取付けるには、上記した以外のも他に慣用されている手段を用いて良いことは言うまでもない。ちなみに、後述する各実施の形態にあっても、上述の爪先板３００を取付けられるようにすることは可能である。
【００４０】
さらに、この先行手摺の各横支柱１，２の左右端近傍および各上側縦支柱５Ｌ，５Ｒの上側の横支柱１が設けられている位置と下側の横支柱２が設けられている位置との間には、それぞれ脆弱部Ｚを設けてある。この脆弱部Ｚは、たとえば、上側縦支柱５Ｌを例にとって説明すると、図８に図示するように、上側縦支柱５Ｌに小径部位を設けて形成される。すなわち、このような脆弱部Ｚを設けた先行手摺にあっては、大きな荷重が負荷された場合に、この脆弱部Ｚとたる小径部位に応力が集中して、脆弱部Ｚが他の部位に先んじて変形するようになっている。したがって、図５に示すように、命綱を先行手摺の横支柱に取付けた作業者が枠組足場上で作業中に足を踏み外すなどして、下方に落下してしまう事態となり、先行手摺に大きな衝撃荷重が負荷された場合に落下した作業者にその反作用として大きな衝撃力が作用することとなるが、脆弱部Ｚが積極的に変形して、その作業者に作用する衝撃力を緩和する。すなわち、この脆弱部Ｚは、枠組足場から落下する作業者に負荷される衝撃力を緩和することができるので、作業者に大きな衝撃力が作用して負傷することを防止することができるので、従来の先行手摺に比較して安全性が向上されている。なお、本実施の形態においては脆弱部Ｚを、図１に示すような位置に設けているが、この脆弱部Ｚを先行手摺の他の位置に設けてもよい。さらに、この脆弱部Ｚを小径部位とせず他の構成としてもよく、たとえば、切欠を設けたり、先行手摺の各支柱を分割してその分割された支柱を小径の別部材により連結して脆弱部としたり、先行手摺の各支柱を分割してその分割された支柱をコイルバネにより連結して脆弱部としてもよい。
【００４１】
さて、このように構成された第１の実施の形態における先行手摺は、図３に示すように、各上側縦支柱５Ｌ，５Ｒをそれぞれ対応する下側縦支柱６Ｌ，６Ｒ内に納めてそのままの状態を規制部材Ｊで維持することができる。このとき、下側縦支柱６Ｌ，６Ｒは断面形状略Ｃ字状であるので、上側縦支柱５Ｌ，５Ｒに結合されている上下の横支柱１，２およびハンドル７，７も邪魔となることはない。すなわち、先行手摺をコンパクトにすることができる。また、従来の先行手摺より部品点数も少なくて済むので、先行手摺の重量も軽量とすることができ、製造コストも従来の先行手摺より低減されることとなる。また、コンパクトにする方法も簡易で、その取付の際の組立も簡易であると同時に、強度の点でも有利となる。また、先行手摺を階下から縦材Ｔに取付ける際には、ハンドル７，７を利用して各下側縦支柱６Ｌ，６Ｒに対して各上側縦支柱５Ｌ，５Ｒを上方に移動させて先行手摺を使用状態に組立ることができ、ハンドル７，７は下側の横支柱２より下方に取付けられているので、ハンドル７，７が無く下側の横支柱２を利用して組立ざるをえない先行手摺に比較して、常に作業員が両腕を上方に挙げながらの先行手摺の取付作業が一層簡易となる。
【００４２】
なお、上側縦支柱５Ｌ，５Ｒと下側縦支柱６Ｌ，６Ｒの形状は、図６、図７に示すように上側縦支柱５Ｌ，５Ｒが下側縦支柱６Ｌ，６Ｒ内に挿入された際に、図６，７中上側縦支柱５Ｌ，５Ｒの上下を下側縦支柱６Ｌ，６Ｒ内面に当接するようにしてあると同時に、図６，７中横方向の移動については上述の規制部材Ｊが孔４内に突出していることにより規制しているので、各縦支柱Ｖ１，Ｖ２が最伸長状態でガタが生じないようになっている。なお、下側縦支柱６Ｌ，６Ｒの断面形状を上側縦支柱５Ｌ，５Ｒに結合されている上下の横支柱１，２が通過できるようにすることが必要であるが、ガタが生じない限りはこれらの各上下の縦支柱５Ｌ，５Ｒ，６Ｌ，６Ｒを他の形状としてもよい。このことは、後述する他の実施の形態についても同様で、先行手摺をコンパクトにできて、各部にガタが生じない限りにおいて、各部材の形状は詳細な説明に記載した形状以外のものに置換してもよい。
【００４３】
つづいて、図９から図１１に示す第２の実施の形態における先行手摺について説明する。この第２の実施の形態における先行手摺は、図９に示すように、一対の建枠の縦材Ｔ，Ｔ間に固定され、各縦材Ｔ，Ｔに固定される左右一対の縦支柱Ｖ３，Ｖ４と、各縦支柱Ｖ３，Ｖ４間に掛け渡される上下一対の横支柱４１，４２と、各横支柱４１，４２をその略中央で連結するロッド４３と、固定手段たる一方の縦支柱Ｖ３に設けた縦材Ｔを抱持するプレートＦと縦材Ｔを挟持する挟持具Ｋと他方の縦支柱Ｖ４に設けた一対の引掛部材Ｈ１，Ｈ２とを備え、さらに、各縦支柱Ｖ３，Ｖ４はそれぞれ上側縦支柱４５Ｌ，４５Ｒと下側縦支柱４６Ｌ，４６Ｒとで構成され、この下側横支柱４２に基端を図９中垂直方向回転自在に軸支された左右一対の斜材４８Ｌ，４８Ｒと、各下側縦支柱４６Ｌ，４６Ｒと各斜材４８Ｌ，４８Ｒの先端とを係止する係止手段４７Ｌ，４７Ｒとを設けている。すなわち、この第２の実施の形態の先行手摺は、第１の実施の形態の先行手摺に斜材４８Ｌ，４８Ｒと、係止手段４７Ｌ，４７Ｒとを設けた構成となっている。
【００４４】
以下、第２の実施の形態について説明するが、第１の実施の形態と同様の部分についてはその説明が重複するので、第１の実施の形態と異なる部分についてのみ詳細に説明する事とする。まず、斜材４８Ｌであるが、図１０に示すように、斜材４８Ｌは棒状本体４９Ｌと先端部５０Ｌとで構成され、斜材４８Ｒも同様の構成である。また、斜材４８Ｌはその本体４９Ｌの基端側が下側横支柱４２の図９中背面に、斜材４８Ｒはその本体４９Ｒの基端側が下側横支柱４２の図９中前面に、それぞれ図９中垂直方向回転自在に軸支されている。すなわち、この先行手摺にあっては、図９に示すように、各斜材４８Ｌ，４８Ｒがそれぞれ矢印ａ，ｂに示すように折畳可能となっている。
【００４５】
また、図１０に示すように、斜材４８Ｌの先端側には、斜材４８Ｌの先端部５０Ｌに回転自在に取付けられた略Ｕ字状の引掛棒５１Ｌが設けられており、引掛棒５１Ｌの一端には抜け止め（図示せず）が施されている。さらに、下側縦支柱４６Ｌの側部には略Ｕ字状の引掛部５２Ｌが設けられており、この引掛部５２Ｌ内方に上述の引掛棒５１Ｌを引っ掛けるとともに、引掛棒５１Ｌが矢印ｃに示すがごとくに回転できるので、この引掛棒５１Ｌを図１０中垂直となるようにすれば、引掛棒５１Ｌの下方の腕（付示せず）が上述の引掛部５２Ｌの下端と干渉して斜材４８Ｌを下側縦支柱４６Ｌに固定することが可能である。このとき、引掛棒５１Ｌは自重により自動的に上記のように図１０中垂直に維持されるので、この先行手摺を使用中、すなわち、枠組足場に取付けている際に、斜材４８Ｌが下側縦支柱４６Ｌから脱落してしまうことが防止されている。すなわち、係止手段４７Ｌは、この引掛棒５１Ｌおよび引掛部５２Ｌとで構成されている。また、他方の斜材４８Ｒ、係止手段４７Ｒおよび下側縦支柱４６Ｒは一方の斜材４８Ｌ、係止手段４７Ｌおよび下側縦支柱４６Ｌと同様の構成としてある。したがって、この第２の実施の形態においては、各斜材４８Ｌ，４８Ｒを設けることによって強度面で第１の実施の形態より優れている。また、係止手段については他の慣用されている係止手段を用いてよいことは無論である。
【００４６】
なお、この実施の形態にあっても、各斜材４８Ｌ，４８Ｒを、図１１に示すように下側横支柱４２に沿わせるようにして、かつ、各上側縦支柱４５Ｌ，４５Ｒを、下側縦支柱４６Ｌ，４６Ｒ内に完全に挿入して各縦支柱Ｖ３、Ｖ４を最収縮状態にすることができるので、第１の実施の形態と同様、先行手摺をコンパクトにすることができる。また、先行手摺を階下から縦材Ｔに取付ける際には、斜材４８Ｌ，４８Ｒの先端部５０Ｌ，５０Ｒを持ち上方に押し上げるようにして各下側縦支柱４６Ｌ，４６Ｒに対して各上側縦支柱４５Ｌ，４５Ｒを上方に移動させて先行手摺を使用状態に組立ることができ、斜材４８Ｌ，４８Ｒは下側の横支柱４２に回転自在に取付けられているので、斜材が無く下側の横支柱４２を利用して組立ざるをえない先行手摺に比較して、常に作業員が両腕を上方に挙げながらの先行手摺の取付作業が一層簡易となる。
【００４７】
すると、第１の実施の形態と同様に、従来の先行手摺より部品点数も少なくて済むので、先行手摺の重量も軽量とすることができ、製造コストも従来の先行手摺より低減されることとなる。また、折畳の方法も簡易で、その取付の際の組立も簡易であると同時に、強度の点でも有利となる。なお、各縦支柱を縦材に固定する固定手段については第１の実施の形態と同様に、プレートＦと挟持具Ｋとをもしくは２つの挟持具Ｋを両方の縦支柱に設けるとしてもよく、さらに、第１の実施の形態と同様に適宜脆弱部を設けてもよい。
【００４８】
さらに、図１２から図１５に示す第３の実施の形態における先行手摺について説明する。この第３の実施の形態における先行手摺は、図１２に示すように、一対の建枠の縦材Ｔ，Ｔ間に固定され、各縦材Ｔ，Ｔに固定される左右一対の縦支柱６７Ｌ，６７Ｒと、各縦支柱６７Ｌ，６７Ｒ間に掛け渡される上下一対の横支柱Ｘ１，Ｘ２と、各横支柱Ｘ１，Ｘ２をその略中央で連結するロッド６３と、固定手段たる一方の縦支柱６７Ｌに設けた縦材Ｔを抱持するプレートＦと縦材Ｔを挟持する挟持具Ｋと他方の縦支柱６７Ｒに設けた一対の引掛部材Ｈ１，Ｈ２とから構成されている。
【００４９】
以下、詳細について説明すると、図１２に示すように、各横支柱Ｘ１，Ｘ２はそれぞれ中空の右側横支柱６１Ｒ，６２Ｒと中空の左側横支柱６１Ｌ，６２Ｌとで構成されている。また、上側横支柱Ｘ１の右側横支柱６１Ｒは、その一端たる基端側を図１２中右側の縦支柱６７Ｒに図１２中垂直方向回転自在に軸支され、また、左側横支柱６１Ｌは、その一端たる基端側を図１２中左側の縦支柱６７Ｌに図１２中垂直方向回転自在に軸支され、双方の横支柱６１Ｌ，６１Ｒの他端たる先端側は、図１３に示すように、ロッド６３の一端に設けた連結部６５に枢着した軸７１および軸７２を介して、図１２中垂直方向回転自在に軸支されている。
【００５０】
さらに、下側横支柱Ｘ２の右側横支柱６２Ｒは、その基端側を図１２中右側の縦支柱６７Ｒに図１２中垂直方向回転自在に軸支され、また、左側横支柱６２Ｌは、その基端側を図１２中左側の縦支柱６７Ｌに図１２中垂直方向回転自在に軸支され、双方の横支柱６２Ｌ，６２Ｒの先端側は、上述の上側横支柱Ｘ１同様に、ロッド６３の他端に設けた連結部６６により図１２中垂直方向回転自在に軸支されている。
【００５１】
また、上側横支柱Ｘ１の略中央には、右側横支柱６１Ｒと左側横支柱６１Ｌとが相対移動することを規制する規制部材６４を設けている。この規制部材６４は、図１３に示すように、中空円筒状のスライド部７０と、横断面コ字状の規制部７７とで構成され、このスライド部７０内に左側横支柱６１Ｌが挿入されるとともに、スライド部７０の図１３中下部には孔７０ａが穿設されている。
【００５２】
また、左側横支柱６１Ｌ内方には、図１３および図１４に示すように、バネ７３，７５と係止部材７４，７６が設けられている。バネ７３，７５および係止部材７４，７６は、第１の実施の形態と同様の構成となっている。そして、第１の実施の形態と同様に、バネ７３と係止部材７４、バネ７５と係止部材７６はそれぞれ組み合わされて左側横支柱６１Ｌに納められるが、左側横支柱６１Ｌに設けた各孔６１Ｌａ，６１Ｌｂにそれぞれ係止部材７４，７６の頭（付示せず）がそれぞれ組み合わされるバネ７３，７５により附勢され突出するように左側横支柱６１Ｌ内に設けられている。そして、このスライド部７０の孔７０ａが、ちょうど左側横支柱６１Ｌの孔６１Ｌａまたは孔６１Ｌｂと重なりあうと、係止部材７４または係止部材７６の頭（付示せず）がそれぞれバネ７３，７５により附勢されているので、孔７０ａ内に突出するようになるので、これにより、規制部材６４を左側横支柱６１Ｌ上の２ヵ所で固定することができる。
【００５３】
そして、上述の孔６１Ｌａは、規制部材６４の規制部７７が右側横支柱６１Ｒの図１３中上部に当接する状態下に規制部材６４が位置するような位置に穿設されおり、他方、孔６１Ｌｂは、規制部材６４の規制部７７が右側横支柱６１Ｒの図１３中上部および連結部６５の図１３中上部には当接しえない状態下に規制部材６４が位置するような位置に穿設されている。また、連結部６５は図１３中上方に開口する横断面コ字状とされ、上述の右側横支柱６１Ｒおよび左側横支柱６１Ｌは、Ｋの連結部６５に対し図１２中垂直上方への回転のみが許容されている。すなわち、規制部材６４が孔７０ａと孔６１Ｌａとを重ねた状態でその移動が規制されると、左側横支柱６１Ｌに挿入されている規制部材６４の規制部７７が右側横支柱６１Ｒの図１３中上部に当接するとともに、左右の横支柱６１Ｌ，６１Ｒは連結部６５により図１３中下方へ回転することが規制されているので、横支柱Ｘ１は直棒状態下に固定されることとなる。すると、ロッド６３により下側横支柱Ｘ２も連結されているので、下側横支柱Ｘ２も直棒状態下に固定されることとなる。それに対し、規制部材６４が孔７０ａと孔６１Ｌｂとを重ねた状態でその移動が規制されると、左側横支柱６１Ｌに挿入されている規制部材６４の規制部７７は右側横支柱６１Ｒの図１３中上部および連結部６５の図１３中上部には当接しえない状態下に左側横支柱６１Ｌに固定されるので、左右の横支柱６１Ｌ，６１Ｒは連結部６５に対し図１３中上方へ回転することが何等規制されない。すると、下側横支柱Ｘ２の左右の横支柱６２Ｌ，６２Ｒも左右の横支柱６１Ｌ，６１Ｒとともに連結部６６に対し図１３中上方へ回転することが何等規制されない。したがって、このような中空円筒状のスライド部と横断面コ字状の規制部とを備えた簡単な構造の規制部材６４により、各部が固定されるので、容易に先行手摺の組立およびコンパクト化が可能であり、また、規制部材６４は横支柱に挿入されて設けられているので、規制部材６４が先行手摺から脱落することがなく、高所から規制部材６４が落下する危険がないので先行手摺の安全性が向上すると同時に、規制部材６４の紛失が防止される。
【００５４】
さて、このように構成された第３の実施の形態における先行手摺は、図１５に示すように、各左右の横支柱６１Ｒ，６１Ｌ，６２Ｒ，６２Ｌをそれぞれ連結部６５，６６に対し図１３中上方に回転させることにより、折畳むことが可能である。すなわち、この第３の実施の形態にあっても先行手摺をコンパクトにすることができる。また、従来の先行手摺より部品点数も少なくて済むので、先行手摺の重量も軽量とすることができ、製造コストも従来の先行手摺より低減されることとなる。また、折畳の方法も簡易で、その取付の際の組立も簡易であると同時に、強度の点でも有利となる。なお、各縦支柱を縦材に固定する固定手段については第１の実施の形態と同様に、プレートＦと挟持具Ｋとをもしくは２つの挟持具Ｋを両方の縦支柱に設けるとしてもよく、さらに、第１の実施の形態と同様に適宜脆弱部を設けてもよい。
【００５５】
つづいて、図１６から図１８に示す第４の実施の形態における先行手摺について説明する。この第４の実施の形態における先行手摺は、図１６に示すように、一対の建枠の縦材Ｔ，Ｔ間に固定され、各縦材Ｔ，Ｔに固定される左右一対の縦支柱８６Ｌ，８６Ｒと、各縦支柱８６Ｌ，８６Ｒ間に掛け渡される上下一対の横支柱Ｘ３，Ｘ４と、各横支柱Ｘ３，Ｘ４をその略中央で連結するロッド８３と、左側縦支柱８６Ｌと下側の横支柱Ｘ４との間に掛け渡される左側斜材８７Ｌと、右側縦支柱８６Ｒと下側の横支柱Ｘ４との間に掛け渡される右側斜材８７Ｒと、固定手段たる一方の縦支柱８６Ｌに設けた縦材Ｔを抱持するプレートＦと縦材Ｔを挟持する挟持具Ｋと他方の縦支柱８６Ｒに設けた縦材Ｔを抱持するプレートＦと縦材Ｔを挟持する挟持具Ｋとから構成されている。
【００５６】
以下、詳細について説明すると、図１６に示すように、各横支柱Ｘ３，Ｘ４はそれぞれ中空の右側横支柱８１Ｒ，８２Ｒと中空の左側横支柱８１Ｌ，８２Ｌとで構成されている。また、上側横支柱Ｘ３の右側横支柱８１Ｒは、その一端たる基端側を図１６中右側の縦支柱８６Ｒに図１６中垂直方向回転自在に軸支され、また、左側横支柱８１Ｌは、その一端たる基端側を図１６中左側の縦支柱８６Ｌに図１６中垂直方向回転自在に軸支され、双方の横支柱８１Ｌ，８１Ｒの他端たる先端側は、ロッド８３の一端に設けた連結部８４に枢着した軸９６および軸９７を介して、図１６中垂直方向に回転自在に軸支されている。
【００５７】
さらに、下側横支柱Ｘ４の右側横支柱８２Ｒは、その基端側を図１６中右側の縦支柱８６Ｒに図１６中垂直方向回転自在に軸支され、また、左側横支柱８２Ｌは、その基端側を図１６中左側の縦支柱８６Ｌに図１６中垂直方向回転自在に軸支され、双方の横支柱８２Ｌ，８２Ｒの先端側は、上述の上側横支柱Ｘ３同様に、ロッド８３の他端に設けた連結部８５に枢着した軸９８および軸９９を介して、図１６中垂直方向回転自在に軸支されている。
【００５８】
また、左側斜材８７Ｌは、その先端側が下側の左側横支柱８２Ｌに左側スライド部材８８Ｌを介してスライドおよび回転自在に装着され、その基端側が左側縦支柱８６Ｌに回転自在に軸支されている。他方、右側斜材８７Ｒも、その先端側が下側の右側横支柱８２Ｒに右側スライド部材８８Ｒを介してスライドおよび回転自在に装着され、その基端側が右側縦支柱８６Ｒに回転自在に軸支されている。
【００５９】
そして、上記の左側のスライド部材８８Ｌは、図１７に示すように、左側横支柱８２Ｌが挿入される図１７中上方が開口する横断面Ｃ字状の筒状の本体８９と、図１７中本体８９上方の開口端から起立する一対の枢着部９０，９０とで構成され、この枢着部９０，９０に左側斜材８７Ｌの先端を挿入して、この枢着部９０，９０および左側取材８７Ｌの先端を貫く軸９１でスライド部材８８Ｌと左側斜材８７Ｌとが回転自在に連結されている。また、スライド部材８８Ｌの本体８９の図１７中下方には、孔８９ａが穿設されている。他方、右側のスライド部材８８Ｒも、上述の左側のスライド部材８８Ｌと同様に構成されており、左側斜材８７Ｌと同様に、右側斜材８７Ｒは右側横支柱８２Ｒに対してスライド自在および回転自在に連結されている。
【００６０】
さらに、スライド部材８８Ｌの本体８９内には下方の左側横支柱８２Ｌが挿入されているので、この左側斜材８８Ｌは、この左側横支柱８２Ｌに対して、スライド自在かつ回転自在に連結されていることとなる。そして、さらに、当該左側支柱８２Ｌ内には、図１７に示すように、バネ９３，９５と係止部材９２，９４が設けられている。バネ９３，９５および係止部材９２，９４は、第１の実施の形態と同様の構成となっている。
【００６１】
そして、第１の実施の形態と同様に、バネ９３と係止部材９２、バネ９５と係止部材９４はそれぞれ組み合わされて下方の左側横支柱８２Ｌに納められるが、左側横支柱８２Ｌに設けた各孔８２Ｌａ，８２Ｌｂにそれぞれ係止部材９２，９４の頭（付示せず）がそれぞれ組み合わされるバネ９３，９５により附勢され突出するように左側横支柱８２Ｌ内に設けられている。さらに、このスライド部材８８Ｌの孔８９ａが、ちょうど左側横支柱８２Ｌの孔８２Ｌａまたは孔８２Ｌｂと重なりあうと、係止部材９２または係止部材９４の頭（付示せず）がそれぞれバネ９３，９５により附勢されており、孔８９ａ内に突出するようになるので、これにより、スライド部材８８Ｌは左側横支柱８２Ｌ上の２ヵ所で固定することができる。他方の下側の右側横支柱８２Ｒ内にも同様に、係止部材（図示せず）およびバネ（図示せず）が納められており、スライド部材８８Ｒも右側横支柱８２Ｒ上の２箇所で固定することができる。
【００６２】
そして、上述の孔８２Ｌａは、スライド部材８８Ｌがこの位置で下方の左側横支柱８２Ｌに対し移動が規制された状態で、当該左側横支柱８２Ｌと左側縦支柱８６Ｌとが略直交した状態に固定できる位置に穿設されている。ここで、ロッド８３の長さは、ロッド８３の両端に取付けられて連結部８４と連結部８５との間の距離の長さが左側縦支柱８６Ｌの上側の横支柱Ｘ３の取付位置と下側の横支柱Ｘ４の取付位置との間の距離の長さと同じとなるように設定されている。すると、上側の左側横支柱８１Ｌもロッド８３、連結部８４，８５により連結され、スライド部材８８Ｌが下側の左側横支柱８２Ｌに対してその移動を規制されるので、上側の左側横支柱８１Ｌも左側縦支柱８６Ｌに対し直交した状態で固定されることとなる。他方、右側のスライド部材８８Ｒも同様に設定されているので、結局図１６に示すように、この先行手摺を使用する状態、すなわち、縦材Ｔ，Ｔ間に固定できる状態で、その各部材（左右の縦支柱８６Ｌ，８６Ｒ、上下の横支柱Ｘ３，Ｘ４、ロッド８３および左右の斜材８７Ｌ，８７Ｒ）が各々の部材に対し相対移動することを規制することができる。
【００６３】
それに対して、スライド部材８８Ｌが孔８９ａと孔８２Ｌｂとを重ねた状態でその移動が規制されると、スライド部材８８Ｌがこの位置で下方の左側横支柱８２Ｌに対し移動が規制された状態で、図１８に示すように当該左側横支柱８２Ｌと左側縦支柱８６Ｌとが折畳まれた状態に固定できる位置に穿設されている。すると、上側の左側横支柱８１Ｌもロッド８３、連結部８４，８５により連結され、スライド部材８８Ｌが下側の左側横支柱８２Ｌに対してその移動を規制されるので、上側の左側横支柱８１Ｌも左側縦支柱８６Ｌに対し折畳まれた状態で固定されることとなる。
【００６４】
他方、右側のスライド部材８８Ｒも同様に設定されているので、結局図１８に示すように、この先行手摺を運搬、保管に最適な状態、すなわち、この先行手摺がコンパクトに折畳まれた状態で、その各部材（左右の縦支柱８６Ｌ，８６Ｒ、上下の横支柱Ｘ３，Ｘ４、ロッド８３および左右の斜材８７Ｌ，８７Ｒ）が各々の部材に対し相対移動することを規制することができる。なお、この左側斜材８７Ｌを下側の左側横支柱８２Ｌに対して移動させる場合には、係止部材９２，９４の頭（付示せず）を当該左側横支柱８２Ｌ内に押し込んで、頭と孔８９ａとの係合を解くことにより自由に移動させることができ、右側斜材８７Ｒについても同様である。
【００６５】
さて、このように構成された第４の実施の形態における先行手摺は、図１８のように折畳むことが可能である。すなわち、この第４の実施の形態にあっても先行手摺をコンパクトにすることができる。また、従来の先行手摺より部品点数も少なくて済むので、先行手摺の重量も軽量とすることができ、製造コストも従来の先行手摺より低減されることとなる。また、折畳の方法も簡易で、その取付の際の組立も簡易であると同時に、強度の点でも有利となる。なお、各縦支柱を縦材に固定する固定手段については第１の実施の形態と同様に、一方の縦支柱にプレートＦと挟持具Ｋとを設け、他方の縦支柱に引掛部材Ｈ１，Ｈ２を設けるとするか、もしくは２つの挟持具Ｋを両方の縦支柱に設けるとしてもよく、さらに、第１の実施の形態と同様に適宜脆弱部を設けてもよい。
【００６６】
つづいて、図１９から図２１に示す第５の実施の形態における先行手摺について説明する。この第５の実施の形態における先行手摺は、図１９に示すように、一対の建枠の縦材Ｔ，Ｔ間に固定され、各縦材Ｔ，Ｔに固定される左右一対の縦支柱Ｖ５，Ｖ６と、各縦支柱Ｖ５，Ｖ６間に掛け渡される上下一対の横支柱１０１，１０２と、各横支柱１０１，１０２を間に掛け渡されるロッド１０３と、固定手段たる一方の縦支柱Ｖ５に設けた縦材Ｔを抱持するプレートＦと縦材Ｔを挟持する挟持具Ｋと他方の縦支柱Ｖ６に設けた縦材Ｔを抱持するプレートＦと縦材Ｔを挟持する挟持具Ｋとから構成されている。
【００６７】
以下、詳細について説明すると、図１９に示すように、各縦支柱Ｖ５，Ｖ６は、それぞれ本体１０５Ｌ，１０５Ｒと、本体１０５Ｌ，１０５Ｒに回転自在に軸支された先端部１０７Ｌ，１０７Ｒとで構成される各下側縦支柱１１５Ｌ，１１５Ｒと中空な各上側縦支柱１０８Ｌ，１０８Ｒとで構成されている。
【００６８】
さらに詳しく説明すると、図１９中左側の左側縦支柱Ｖ５において、先端部１０７Ｌは本体１０５Ｌの先端に軸１１６Ｌを介して回転自在に枢着されており、また、図２０に示すように、本体１０５Ｌの上端部は、下部より若干細くなっており、先端部１０７Ｌの外形は、本体１０５Ｌの上端部と同様に本体１０５Ｌより若干細くなっている。
【００６９】
さらに、先端部１０７Ｌの側部には図２０中左側方から孔１１３Ｌが穿設されており、この孔１１３Ｌ内には、コイルバネ１１２Ｌおよびコイルバネ１１２Ｌにより孔１１３Ｌ内から突出する方向に附勢された球１１１Ｌが挿入されている。そして、先端部１０７Ｌは、上側縦支柱１０８Ｌ内にスライド自在に挿入されている。
【００７０】
また、上側縦支柱１０８Ｌには、図２０中側部の上下に２つの孔１０９Ｌ，１１０Ｌが穿設されており、この孔１０９Ｌ、１１０Ｌと上述の先端部１０７Ｌ孔とが重なり合うと、球１１１Ｌが孔１０９Ｌもしくは孔１１０Ｌ内に突出するようになっている。ここで、各孔１０９Ｌ，１１０Ｌの直径は、上述の球１１１Ｌより若干小さくなっており、球１１１Ｌが上側縦支柱１０８Ｌおよび先端部１０７Ｌから脱落してしまうことが防止されている。
【００７１】
さらに、上述のように、先端部１０７Ｌと本体１０５Ｌの上端部は、本体１０５Ｌの下部より若干細くなっており、また、上側縦支柱１０８Ｌの内形がほぼ先端部１０７Ｌおよび本体１０５Ｌの上端部の外形と略同じ形状となっており、上側縦支柱１０８Ｌは、この先端部１０７Ｌおよび本体１０５Ｌの上端部を覆うことができ、かつ、本体１０５Ｌの下部の図２０中上端で作られる段部１０５Ｌａで、それ以上上側縦支柱１０８Ｌが本体１０５Ｌの下方へ移動することが規制されている。また、この段部１０５Ｌａと上側縦支柱１０８Ｌとが当接した状態で孔１０９Ｌと孔１１３Ｌとが重なり合うようになっており、したがって、上記状態で上側縦支柱１０８Ｌと下側縦支柱１０５Ｌとを固定することができ、かつ、先端部１０７Ｌ、軸１１６Ｌ、本体１０５Ｌの上端部が上側縦支柱１０８Ｌ内に納められるので、左側縦支柱Ｖ５を直棒状に維持することが可能である。
【００７２】
また、孔１１０Ｌと孔１１３Ｌとが重なりあうと、今度は、上側縦支柱１０８Ｌの下端が軸１１６Ｌより図２０中上方に位置するように上側縦支柱１０８Ｌと下側縦支柱１１５Ｌとを固定することができるので、この場合には、上側縦支柱１０８Ｌは本体１０５Ｌに対して図２０中垂直方向に回転させ折畳むことができる。他方、右側縦支柱Ｖ６も、左側縦支柱Ｖ５と同様の構成となっており、やはり、右側縦支柱Ｖ６を直棒状体および折畳むことができるようになっている。
【００７３】
さらに、左側の上側縦支柱１０８Ｌには、上側横支柱１０１の一端が、右側の上側縦支柱１０８Ｒには、上側横支柱１０１の他端が連結されている。そして、左側の下側縦支柱１１５Ｌには、下側横支柱１０２がその一端に回転自在に連結されたスライド部材１０６Ｌを介して連結され、右側の下側縦支柱１１５Ｒには、下側横支柱１０２がその他端に回転自在に連結されたスライド部材１０６Ｒを介して連結されている。このスライド部材１０６Ｌ，１０６Ｒは、第４の実施の形態のスライド部材８８Ｌ，８８Ｒと同様の構成であり、左右の縦支柱Ｖ５，Ｖ６上をスライドして移動することが可能である。
【００７４】
そして、上側横支柱１０１と下側横支柱１０２には、双方を連結するロッド１０３が掛け渡されている。このロッド１０３は、その基端側が上側横支柱１０１の略中央で回転自在に軸支され、その先端側が下側横支柱１０２にスライド部材１０４を介してスライドおよび回転自在に装着されている。このスライド部材１０４も上述の第４の実施の形態のスライド部材８８Ｌ，８８Ｒに同様に構成され、下側横支柱１０２上をスライドして移動することが可能である。
【００７５】
また、図示はしないが、上記各スライド部材１０６Ｌ，１０６Ｒ，１０４を固定するために、やはり、各スライド部材１０６Ｌ，１０６Ｒ，１０４が装着されている左右の下側縦支柱１１５Ｌ，１１５Ｒおよび下側横支柱１０２内に、上述の第１の実施の形態と同様のバネと係止部材の組合せによる規制部材が納められており、各スライド部材１０６Ｌ，１０６Ｒ，１０４を、それぞれ左右の下側縦支柱１１５Ｌ，１１５Ｒおよび下側横支柱１０２上に固定することが可能となっている。
【００７６】
ちなみに、本実施の形態においては、規制部材は、図１９中に示すように、この先行手摺を使用する状態、すなわち、縦材Ｔ，Ｔ間に固定できる状態で、その各部材（左右の縦支柱Ｖ５，Ｖ６、上下の横支柱１０１，１０２、および、ロッド１０３）が各々の部材に対し相対移動することを規制することができる位置に設けられている。
【００７７】
また、スライド１０４をスライドさせることにより、ロッド１０３を、図１９中左右いずれか一方に回転させて、上側横支柱１０１に沿わせると同時に、上記スライド部材１０６Ｌおよびスライド１０６Ｒを各々左右縦支柱Ｖ５，Ｖ６上を図１９中上方にスライドさせて、ロッド１０３を下側横支柱１０２に沿わせた場合に、右側縦支柱Ｖ６の下側縦支柱１１５Ｒを、スライド部材１０６Ｒの下端近傍で折畳んで下側横支柱１０２に沿わせることができ、左側縦支柱Ｖ５の下側縦支柱１１５Ｌを、上記右側の下側縦支柱１１５Ｒが折畳まれた状態において、下側縦支柱１１５Ｒに沿わせるように折畳むことができるように、適宜各部（各上側縦支柱１０８Ｌ，１０８Ｒ、各先端部１０７Ｌ，１０７Ｒおよび本体１０５Ｌ，１０５Ｒの上端部）の長さが設定されている。
【００７８】
なお、スライド１０４をスライドさせることにより、ロッド１０３を、図１９中左右いずれか一方に回転させて、上側横支柱１０１に沿わせた状態で、やはり、下側横支柱１０２内に、上述の第１の実施の形態と同様のバネと係止部材の組合せによる規制部材が納められており、スライド部材１０４を、下側横支柱１０２上に固定することが可能となっている。
【００７９】
すると、図２１に示すように、この先行手摺をコンパクトに折畳むことが可能である。すなわち、この第５の実施の形態にあっても先行手摺をコンパクトにすることができる。また、従来の先行手摺より部品点数も少なくて済むので、先行手摺の重量も軽量とすることができ、製造コストも従来の先行手摺より低減されることとなる。また、折畳の方法も簡易で、その取付の際の組立も簡易であると同時に、強度の点でも有利となる。なお、各縦支柱を縦材に固定する固定手段については第１の実施の形態と同様に、一方の縦支柱にプレートＦと挟持具Ｋとを設け、他方の縦支柱に引掛部材Ｈ１，Ｈ２を設けるとするか、もしくは２つの挟持具Ｋを両方の縦支柱に設けるとしてもよく、さらに、第１の実施の形態と同様に適宜脆弱部を設けてもよい。
【００８０】
つぎに、図２２から図２３に示す第６の実施の形態における先行手摺について説明する。この第６の実施の形態における先行手摺は、図２２に示すように、一対の建枠の縦材Ｔ，Ｔ間に固定され、各縦材Ｔ，Ｔに固定される左右一対の縦支柱Ｖ７，Ｖ８と、各縦支柱Ｖ７，Ｖ８間に掛け渡される上下一対の横支柱１２１，１２２と、各横支柱１２１，１２２をその略中央で連結するロッド１２３と、固定手段たる一方の縦支柱Ｖ７に設けた縦材Ｔを抱持するプレートＦと縦材Ｔを挟持する挟持具Ｋと他方の縦支柱Ｖ８に設けた縦材Ｔを抱持するプレートＦと縦材Ｔを挟持する挟持具Ｋとから構成されている。
【００８１】
以下、詳細について説明すると、図２２に示すように、各縦支柱Ｖ７，Ｖ８はそれぞれ上側縦支柱１２４Ｌ，１２４Ｒと下側縦支柱１２５Ｌ，１２５Ｒとで構成されている。また、左側の上側縦支柱１２４Ｌの図２２中下端には、図２２中右方が開口する略コ字状のブラケット１２８Ｌが設けられるとともに、左側の下側縦支柱１２５Ｌの図２２中上端には孔１３２Ｌを備えた凸型のブラケット１３１Ｌが設けられ、このブラケット１２８Ｌとブラケット１３１Ｌとは図２３に示すように、軸１２７Ｌで連結されており、上側縦支柱１２４Ｌは下側縦支柱１２５Ｌに対して図２２中右方に垂直回転可能である。
【００８２】
また、下側縦支柱１２５Ｌ内の上方には、第１の実施の形態と同様に、バネ１３０Ｌと、係止部材１２６Ｌとの組合せによる規制部材が納められていると同時に、その側部には孔１２５Ｌａが穿設されており、この係止部材１２６Ｌの頭がバネ１３０Ｌにより附勢されて孔１２５Ｌａ内に突出するようになっている。さらに、上述の上側縦支柱１２４Ｌの下端に設けられたブラケット１２８Ｌの図２２中前側部にも孔１２８Ｌａが穿設されており、ちょうど、このブラケット１２８Ｌの孔１２８Ｌａと下側縦支柱１２５Ｌの孔１２５Ｌａとが重なり合うと、係止部材１２６Ｌの頭が孔１２８Ｌａ内に突出して、上側縦支柱１２４Ｌと下側縦支柱１２５Ｌとが直棒状に固定可能なようになっている。他方、右側縦支柱Ｖ８も、左側縦支柱Ｖ７と同様の構成になっており、上側縦支柱１２４Ｒと下側縦支柱１２５Ｒとが直棒状に固定可能なようになっている。
【００８３】
したがって、この第６の実施の形態においても、図２２のように、各下側縦支柱１２５Ｌ，１２５Ｒを上側縦支柱１２４Ｌ，１２４Ｒに対してそれぞれ矢印ｃ、ｄの方向に回転させることができ、これにより、この先行手摺をコンパクトに折畳むことが可能である。すなわち、この第６の実施の形態にあっても先行手摺をコンパクトにすることができる。また、従来の先行手摺より部品点数も少なくて済むので、先行手摺の重量も軽量とすることができ、製造コストも従来の先行手摺より低減されることとなる。また、折畳の方法も簡易で、その取付の際の組立も簡易であると同時に、強度の点でも有利となる。なお、各縦支柱を縦材に固定する固定手段については第１の実施の形態と同様に、一方の縦支柱にプレートＦと挟持具Ｋとを設け、他方の縦支柱に引掛部材Ｈ１，Ｈ２を設けるとするか、もしくは２つの挟持具Ｋを両方の縦支柱に設けるとしてもよく、さらに、第１の実施の形態と同様に適宜脆弱部を設けてもよい。
【００８４】
さらに、図２４および図２５に示す第７の実施の形態における先行手摺について説明する。この第７の実施の形態における先行手摺は、図２４に示すように、一対の建枠の縦材Ｔ，Ｔ間に固定され、各縦材Ｔ，Ｔに固定される左右一対の縦支柱Ｖ９，Ｖ１０と、各縦支柱Ｖ９，Ｖ１０間に掛け渡される上下一対の横支柱Ｘ５，Ｘ６と、固定手段たる一方の縦支柱Ｖ９に設けた縦材Ｔを抱持するプレートＦと縦材Ｔを挟持する挟持具Ｋと他方の縦支柱Ｖ１０に設けた縦材Ｔを抱持するプレートＦと縦材Ｔを挟持する挟持具Ｋとを備え、さらに、各縦支柱Ｖ９，Ｖ１０はそれぞれ上側縦支柱１４３Ｌ，１４３Ｒと下側縦支柱１４５Ｌ，１４５Ｒとで構成され、また、上側横支柱Ｘ５および下側縦支柱Ｘ６は、それぞれ左側横支柱１４１Ｌ，１４２Ｌと右側縦支柱１４１Ｒ，１４２Ｒとで構成されている。
【００８５】
以下、詳細について説明すると、図２４に示すように、左側の上側縦支柱１４３Ｌの図２４中下端には、第６の実施の形態と同様の図２４中右方が開口する略コ字状のブラケット１４４Ｌが設けられるとともに、左側の下側縦支柱１４５Ｌの図２４中上端には第６の実施の形態と同様の孔（図示せず）を備えた凸型のブラケット（図示せず）が設けられ、このブラケット１４４Ｌとブラケット（図示せず）とは軸１４６Ｌで連結されており、上側縦支柱１４３Ｌは下側縦支柱１４５Ｌに対して図２４中右方に垂直回転可能であり、また、下側縦支柱１４５Ｌ内の上方には、第６の実施の形態と同様に、バネ（図示せず）と、係止部材（図示せず）との組合せによる規制部材（図示せず）が納められており、上側縦支柱１４３Ｌと下側縦支柱１４５Ｌとが直棒状に固定可能なようになっている。他方、右側縦支柱Ｖ１０も、左側縦支柱Ｖ９と同様の構成になっており、上側縦支柱１４３Ｒと下側縦支柱１４５Ｒとが直棒状に固定可能なようになっている。
【００８６】
また、アウターチューブたる上方の左側横支柱１４１Ｌは中空であって、この左側横支柱１４１内にインナーロッドたる右側横支柱１４１Ｒがスライド自在に挿入されるとともに、やはり、バネ（付示せず）と係止部材（付示せず）との組合せによる規制部材（付示せず）が右側横支柱１４１Ｒ内の図２４中左端近傍に納められている。そして、左側横支柱１４１Ｌには孔１４１Ｌａおよび孔１４１Ｌｂが穿設されており、第１の実施の形態と同様にこの孔孔１４１Ｌａ，１４１Ｌｂと上述の規制部材（付示せず）とを利用して左側横支柱１４１Ｌと右側横支柱１４１Ｒとを最伸長状態および最収縮状態に維持固定することが可能となっている。他方、下側の横支柱Ｘ６についても、上述の横支柱Ｘ５と同様の構成となっており、左側横支柱１４２Ｌと右側横支柱１４２Ｒとを最伸長状態および最収縮状態に維持固定することが可能となっている。なお、アウターチューブを右側横支柱として、インナーロッドを左側横支柱としてもよい。
【００８７】
上記したように、本実施の形態においては、その上下の横支柱Ｘ５，Ｘ６以外の部分は第６の実施の形態と略同様の構成であって、その左右の縦支柱Ｖ９、Ｖ１０をそれぞれ図２５に示すように矢印ｅ，ｆの方向に回転させて折畳むことが可能となっている。但し、第６の実施の形態と若干異なるのは、上述のように、各横支柱Ｘ５，Ｘ６を、各左側横支柱１４１Ｌ，１４２Ｌ内にそれぞれ右側横支柱１４１Ｌ，１４１Ｒを納めて最収縮状態とすることができるので、左右の下側縦支柱１４５Ｌ，１４５Ｒが第６の実施の形態のように折畳まれると、左右の下側縦支柱１４５Ｌ，１４５Ｒが互いに干渉してしまうので、本実施の形態においては、右側の上側縦支柱１４３Ｒと下側縦支柱１４５Ｒの折畳の支点を左側の上側縦支柱１４３Ｌと下側縦支柱１４５Ｌの折畳の支点より図２５中若干下方にずれた位置とすることにより、双方の下側縦支柱１４５Ｌ，１４５Ｒが互いに折畳まれた状態において干渉しないようにしてある。
【００８８】
したがって、この第７の実施の形態においても、図２５のように、各下側縦支柱１４５Ｌ，１４５Ｒを上側縦支柱１４３Ｌ，１４３Ｒに対してそれぞれ矢印ｅ，ｆの方向に回転させることができ、さらに、上下の横支柱Ｘ５，Ｘ６を最収縮させることにより、この先行手摺をコンパクトに折畳むことが可能である。すなわち、この第７の実施の形態にあっても先行手摺をコンパクトにすることができ、かつ、この場合には、第６の実施の形態よりもさらにコンパクトに折畳むことができる。また、従来の先行手摺より部品点数も少なくて済むので、先行手摺の重量も軽量とすることができ、製造コストも従来の先行手摺より低減されることとなる。また、折畳の方法も簡易で、その取付の際の組立も簡易であると同時に、強度の点でも有利となる。なお、各縦支柱を縦材に固定する固定手段については第１の実施の形態と同様に、一方の縦支柱にプレートＦと挟持具Ｋとを設け、他方の縦支柱に引掛部材Ｈ１，Ｈ２を設けるとするか、もしくは２つの挟持具Ｋを両方の縦支柱に設けるとしてもよく、さらに、第１の実施の形態と同様に適宜脆弱部を設けてもよい。
【００８９】
さらに、図２６から図２９に示す第８の実施の形態における先行手摺について説明する。この第８の実施の形態における先行手摺は、図２６に示すように、一対の建枠の縦材Ｔ，Ｔ間に固定され、各縦材Ｔ，Ｔに固定される左右一対の縦支柱１５５Ｌ，１５５Ｒと、各縦支柱１５５Ｌ，１５５Ｒ間に掛け渡される上下一対の横支柱Ｘ７，Ｘ８と、固定手段たる一方の縦支柱１５５Ｌに設けた縦材Ｔを抱持するプレートＦと縦材Ｔを挟持する挟持具Ｋと他方の縦支柱１５５Ｒに設けた縦材Ｔを抱持するプレートＦと縦材Ｔを挟持する挟持具Ｋとから構成されている。
【００９０】
以下、詳細について説明すると、図２６および図２９に示すように、各横支柱Ｘ７，Ｘ８はそれぞれ中空の右側横支柱１５１Ｒ，１５２Ｒと中空の左側横支柱１５１Ｌ，１５１Ｌと連結部１５８，１６６とで構成されている。また、上側横支柱Ｘ７の右側横支柱１５１Ｒは、その基端側を図２６中右側の縦支柱１５５Ｒに結合され、また、左側横支柱１５１Ｌは、その基端側を図２６中左側の縦支柱１５５Ｌに結合され、双方の横支柱１５１Ｌ，１５１Ｒの先端側は、図２７に示すように、連結部１５８に軸１６３および軸１６４を介して、図２６中水平方向回転自在に枢着されている。
【００９１】
さらに、下側横支柱Ｘ８の右側横支柱１５２Ｒは、その基端側を図２６中右側の縦支柱１５５Ｒに結合され、また、左側横支柱１５２Ｌは、その基端側を図２６中左側の縦支柱１５５Ｌに結合され、双方の横支柱１５２Ｌ，１５２Ｒの先端側は、上述の上側横支柱Ｘ７同様に、連結部１６６により図２６中水平方向回転自在に軸支されている。
【００９２】
また、上側横支柱Ｘ７の略中央には、右側横支柱１５１Ｒと左側横支柱１５１Ｌとが相対移動することを規制する規制部材１５７を設けている。この規制部材１５７は、図２７に示すように、中空筒状であって、この規制部材１５７内に右側横支柱１５１Ｒが挿入されるとともに、規制部材１５７の図２７中上方には孔１５７ａが穿設されている。
【００９３】
また、右側横支柱１５１Ｒ内方には、図２７に示すように、バネ１６０と係止部材１５９が設けられるとともに、左側横支柱１５１Ｌ内方にも、図２７に示すように、バネ（図示せず）と係止部材１６２が設けられている。バネ１６０，（図示せず）および係止部材１５９，１６２は、第１の実施の形態と同様の構成となっている。
【００９４】
そして、第１の実施の形態と同様に、バネ１６０と係止部材１５９、バネ（図示せず）と係止部材１６２はそれぞれ組み合わされて、右側横支柱１５１Ｒおよび左側横支柱１５１Ｌに納められるが、右側横支柱１５１Ｒに設けた孔１５１Ｒａに係止部材１５９の頭（付示せず）が組み合わされるバネ１６０により附勢され突出するように右側横支柱１５１Ｒ内に設けられ、他方、左側横支柱１５１Ｌに設けた孔（図示せず）に係止部材１６２の頭（付示せず）が組み合わされるバネ（図示せず）により附勢され突出するように左側横支柱１５１Ｌ内に設けられている。
【００９５】
そして、この規制部材１５７の孔１５７ａが、ちょうど右側横支柱１５１Ｒの孔１５１Ｒａもしくは左側横支柱１５１Ｌの孔（図示せず）と重なりあうと、係止部材１５９の頭（付示せず）もしくは係止部材１６２の頭（付示せず）がそれぞれバネ１６０，（図示せず）により附勢されているので、孔１５７ａ内に突出するようになるので、これにより、規制部材１５７を右側横支柱１５１Ｒ上もしくは左側横支柱１５１Ｌ上の２ヵ所で固定することができる。
【００９６】
また、規制部材１５７の内形は、左右の横支柱１５１Ｒ，１５１Ｌの外形と略同じに設定されており、この規制部材１５７は左右の横支柱１５１Ｒ，１５１Ｌ上をスライドすることができるようになっている。
【００９７】
そして、上述の左側横支柱１５１Ｌの孔（図示せず）は、規制部材１５７が左側横支柱１５１Ｌに固定されたときに規制部材１５７が左側横支柱１５１Ｌの図２７中右端部と右側横支柱１５１Ｒの図２７中左端部とを覆うような位置となるような位置に穿設されおり、他方、右側横支柱１５１Ｒの孔１５１Ｒａは、規制部材１５７が右側横支柱１５１Ｒに固定されたときに左側横支柱１５１Ｌおよび連結部１５８を覆わない位置となるような位置に穿設されている。
【００９８】
また、連結部１５８は、規制部材１５７がスライドできるように、その外形を左右の横支柱１５１Ｒ、１５１Ｌと同じかそれよりも細くなるように設定されている。
【００９９】
すなわち、規制部材１５７が孔１５７と左側横支柱１５１Ｌの孔（図示せず）とを重ねた状態でその移動が規制されると、規制部材１５７内に左側横支柱１５１Ｌの図２７左端とおよび右側横支柱１５１Ｒの図２７中右端とが挿入されている状態となって、左側横支柱１５１Ｌが右側横支柱１５１Ｒに対して回転することが規制されるので、横支柱Ｘ７は直棒状態下に固定されることとなる。
【０１００】
それに対し、規制部材１５７が孔１５７ａと孔１５１Ｒａとを重ねた状態でその移動が規制されると、規制部材１５７は右側横支柱１５１Ｒに挿入されているだけとなり、左側横支柱１５１Ｌおよび連結部１５８の移動を規制しえないので、左右の横支柱１５１Ｌ，１５１Ｒは連結部１５８に対し図２８中矢印ｈ，ｇ方向へ回転することができる。
【０１０１】
他方、下側横支柱Ｘ８も上述の上側横支柱Ｘ７と同様の構成をしており、規制部材１５４をスライドさせることにより下側横支柱Ｘ８を直棒状体下に維持固定できることともに、左右の横支柱１５２Ｌ，１５２Ｒは連結部１６６に対し回転することができる。
【０１０２】
さて、このように構成された第８の実施の形態における先行手摺は、各左右の横支柱１５１Ｒ，１５１Ｌ，１５２Ｒ，１５２Ｌをそれぞれ図２６中背面側に回転させることにより、図２９に示すように、折畳むことが可能である。すなわち、この第８の実施の形態にあっても先行手摺をコンパクトにすることができる。また、従来の先行手摺より部品点数も少なくて済むので、先行手摺の重量も軽量とすることができ、製造コストも従来の先行手摺より低減されることとなる。また、折畳の方法も簡易で、その取付の際の組立も簡易であると同時に、強度の点でも有利となる。なお、各縦支柱を縦材に固定する固定手段については第１の実施の形態と同様に、一方の縦支柱にプレートＦと挟持具Ｋとを設け、他方の縦支柱に引掛部材Ｈ１，Ｈ２を設けるとするか、もしくは２つの挟持具Ｋを両方の縦支柱に設けるとしてもよく、さらに、第１の実施の形態と同様に適宜脆弱部を設けてもよい。
【０１０３】
さらに、図３０および図３１に示す第９の実施の形態における先行手摺について説明する。この第９の実施の形態における先行手摺は、図３０に示すように、一対の建枠の縦材Ｔ，Ｔ間に固定され、各縦材Ｔ，Ｔに固定される左右一対の縦支柱１７４Ｌ，１７４Ｒと、各縦支柱１７４Ｌ，１７４Ｒ間に掛け渡される上下一対の横支柱１７１，１７２と、各横支柱１７１，１７２をその略中央で連結するロッド１７３と、固定手段たる一方の縦支柱１７４Ｌに設けた縦材Ｔを抱持するプレートＦと縦材Ｔを挟持する挟持具Ｋと他方の縦支柱１７４Ｒに設けた縦材Ｔを抱持するプレートＦと縦材Ｔを挟持する挟持具Ｋとから構成されている。
【０１０４】
以下、詳細について説明すると、図３０に示すように、各横支柱１７１，１７２はそれぞれその両端が左右の縦支柱１７４Ｌ，１７４Ｒにより図３０中垂直回転自在に軸支されるとともに、その各略中央が、ロッド１７３の両端により回転自在に軸支されている。
【０１０５】
さて、このように構成された第９の実施の形態における先行手摺は、図３１に示すように、先行手摺全体を図３１中横方向に倒すように、折畳むことが可能である。したがって、この第９の実施の形態にあっても先行手摺をコンパクトにすることができる。また、従来の先行手摺より部品点数も少なくて済むので、先行手摺の重量も軽量とすることができ、製造コストも従来の先行手摺より低減されることとなる。また、折畳の方法も簡易で、その取付の際の組立も簡易であると同時に、強度の点でも有利となる。なお、各縦支柱を縦材に固定する固定手段については、一方の縦支柱にプレートＦと挟持具Ｋとを設け、他方の縦支柱に引掛部材Ｈ１，Ｈ２を設けるとしてもよく、また、挟持具Ｋ２つを両方の縦支柱に設けるとしてもよく、さらに、第１の実施の形態と同様に適宜脆弱部を設けてもよい。
【０１０６】
そして、図３２から図３４に示す第１０の実施の形態における先行手摺は、図３２に示すように、一対の建枠の縦材Ｔ，Ｔ間に固定され、各縦材Ｔ，Ｔに固定される左右一対の縦支柱Ｖ１１，Ｖ１２と、各縦支柱Ｖ１１，Ｖ１２間に掛け渡される上下一対の横支柱１８１，１８２と、各横支柱１８１，１８２を間に掛け渡されるロッド１８３と、下側の横支柱１８２に基端を回転自在に軸支された左右一対の斜材１９０Ｌ，１９０Ｒと、一方の下側縦支柱１８６Ｌと一方の斜材１９０Ｌとを係止する係止手段１９２Ｌと、他方の下側縦支柱１８６Ｒと他方の斜材１９０Ｒとを係止する係止手段１９２Ｒと、固定手段たる一方の縦支柱Ｖ１１に設けた縦材Ｔを抱持するプレートＦ１と縦材Ｔを挟持する挟持具Ｋと他方の縦支柱Ｖ１２に設けた一対の引掛部材Ｈ１，Ｈ３とから構成されている。
【０１０７】
以下、詳細について説明すると、図３２に示すように、各縦支柱Ｖ１１，Ｖ１２は、それぞれ本体１８５Ｌ，１８５Ｒと、本体１８５Ｌ，１８５Ｒに回転自在に軸支された先端部１８４Ｌ，１８４Ｒとで構成される各上側縦支柱２０５Ｌ，２０５Ｒと中空な各下側縦支柱１８６Ｌ，１８６Ｒとで構成されている。
【０１０８】
さらに詳しく説明すると、図３２中左側の左側縦支柱Ｖ１１において、先端部１８４Ｌは本体１８５Ｌの先端に回転自在に軸支されており、また、本体１８５Ｌの下方側部には第１の実施の形態と同様のバネ（付示せず）と係止部材（付示せず）とで構成される規制部材Ｊが設けられている。そして、この本体１８５Ｌは、下側縦支柱１８６Ｌ内にスライド自在に挿入されている。
【０１０９】
さらに、下側縦支柱１８６Ｌの図３２中上方側部には規制部材Ｊの係止部材（付示せず）が係合する孔（付示せず）が設けられており、この孔（付示せず）と規制部材Ｊの係止部材（付示せず）が係合すると、上側縦支柱２０５Ｌの本体１８５Ｌは、下側縦支柱１８６Ｌに対して、移動することが規制される。そして、上記までの構成は、他方の右側縦支柱Ｖ１２についても同様である。また、左側縦支柱Ｖ１１の下側縦支柱１８６Ｌには、縦材Ｔを抱持するプレートＦ１と第１の実施の形態と同様の縦材Ｔを挟持する挟持具Ｋが設けられており、他方、右側縦支柱Ｖ１２の下側縦支柱１８６Ｒには、隣り合うであろう先行手摺のプレートＦ１に係合する引掛部在Ｈ３と隣り合うであろう先行手摺の挟持具Ｋに係合する第１の実施の形態と同様の引掛部在Ｈ１が設けられている。
【０１１０】
プレートＦ１は、その基本的には図６に示した第１の実施の形態のプレートＦと同様に、プレート本体２０と、プレート本体２０の先端側から基端側に向かって設けた切欠２１と、切欠２１の中間部に設けた縦材Ｔを抱持する抱持孔２２と、プレート本体２０に設けた後述する引掛部材Ｈ３が挿入される孔２３とで構成されるが、図３２に示すように丁度、図６中のプレートＦの上端部に立上部２０１を設け、その立上部２０１に回転自在に略Ｕ字状の引掛棒２００が設けられたものとなっている。また、この引掛棒２００の一端には抜け止め（図示せず）が施されて、立上部２０１から脱落しないようになっている。他方、図３４に示すように、引掛部材Ｈ３は、右側縦支柱Ｖ１２の下側縦支柱１８６Ｒに固着される基端部２０６と、基端部２０６の図３４中下端から延設される傾斜部２０７と、傾斜部２０７から垂下されプレートＦ１の孔２３に挿入される挿入部２０８と、基端部２０６の図３４中上端から延設される水平部２０９とで構成され、プレートＦ１の孔２３に引掛部材Ｈ３の挿入部２０８が挿入した状態において、プレートＦ１の引掛棒２００を図３４に示すように、引掛部在Ｈ３の水平部２０９に引掛けることにより、プレートＦ１から引掛部在Ｈ３が抜け出てしまうことを防止できるようになっている。このとき、引掛棒２００は自重により自動的に図３４に示すように引掛部在Ｈ３の水平部２０９に引っ掛かった状態に維持されるので、この先行手摺を使用中、すなわち、枠組足場に取付けている際に、プレートＦ１から引掛部在Ｈ３が抜け出てしまうことが防止できる。
【０１１１】
さらに、左側の上側縦支柱２０５Ｌの先端部１８４Ｌの上端には、上側横支柱１８１の一端が、右側の上側縦支柱２０５Ｒの先端部１８４Ｒの上端には、上側横支柱１８１の他端が連結されている。そして、左側の上側縦支柱２０５Ｌの本体１８５Ｌには、下側横支柱１８２の一端がスライド自在に装着され、他方、右側の上側縦支柱２０５Ｒの本体１８５Ｒには、下側横支柱１８２の他端がスライド自在に装着されている。したがって、下側横支柱１８２は、左右の縦支柱Ｖ１１，Ｖ１２上をスライドして移動することが可能である。
【０１１２】
そして、上側横支柱１８１と下側横支柱１８２には、双方を連結するロッド１８３が掛け渡されている。このロッド１８３は、その基端側が下側横支柱１８２の略中央で回転自在に軸支され、その先端側が上側横支柱１８１にスライド部材１８７を介してスライドおよび回転自在に装着されている。このスライド部材１８７も上述の第４の実施の形態のスライド部材８８Ｌ，８８Ｒに同様に構成され、上側横支柱１８１上をスライドして移動することが可能である。
【０１１３】
また、図示はしないが、上記スライド部材１８７を固定するために、スライド部材１８７が装着されている上側横支柱１８１内に、上述の第１の実施の形態と同様のバネと係止部材の組合せによる規制部材が納めて、スライド部材１８７を、上側横支柱１８１上に固定することを可能としてもよい。
【０１１４】
さらに、斜材１９０Ｌであるが、斜材１９０Ｌは棒状本体１９１Ｌと棒状本体の先端側に回転自在に取付けた略Ｕ字状の引掛棒１９３Ｌとで構成され、斜材１９０Ｒも同様の構成である。また、斜材１９０Ｌはその本体１９１Ｌの基端側が下側横支柱１８２の図３２中背面に、斜材１９０Ｒはその本体１９１ＬＲの基端側が下側横支柱１８２の図３２中前面に、それぞれ図３２中垂直方向回転自在に軸支されている。すなわち、この先行手摺にあっては、図３２に示すように、各斜材１９０Ｌ，１９０Ｒがそれぞれ矢印ｐ，ｒに示すように折畳可能となっている。
【０１１５】
また、斜材１９０Ｌの先端側に設けた引掛棒１９３Ｌには、本体１９１Ｌから脱落することを防止する抜け止め（図示せず）が施されている。さらに、右側縦支柱Ｖ１１の下側縦支柱１８６Ｌの側部には略Ｕ字状の引掛部１９４Ｌが設けられており、この引掛部１９４Ｌ内方に上述の引掛棒１９３Ｌを引掛けることができ、この引掛棒１９３Ｌを図３４中垂直となるようにすれば、引掛棒１９３Ｌの下方の腕（付示せず）が上述の引掛部１９４Ｌの下端と干渉して斜材１９０Ｌを下側縦支柱１８６Ｌに固定することが可能である。このとき、引掛棒１９３Ｌは自重により自動的に上記のように図３４中垂直に維持されるので、この先行手摺を使用中、すなわち、枠組足場に取付けている際に、斜材１９０Ｌが下側縦支柱１８６Ｌから脱落してしまうことが防止されている。すなわち、係止手段１９２Ｌは、この引掛棒１９３Ｌおよび引掛部１９４Ｌとで構成されている。また、他方の斜材１９０Ｒ、係止手段１９２Ｒは一方の斜材１９０Ｌ、係止手段１９２Ｌと同様の構成としてある。したがって、この第１０の実施の形態においては、各斜材１９０Ｌ，１９０Ｒを設けることによって強度面で第１の実施の形態より優れている。また、係止手段については他の慣用されている係止手段を用いてよいことは無論である。
【０１１６】
さて、この実施の形態にあっては、斜材１９０Ｌ，１９０Ｒを図３３に示すように、下側横支柱１８２に沿わせるようにし、スライド部材１８７を上側縦支柱１８１に対して左右のどちらかの方向にスライドさせつつロッド１８３を下側横支柱１８２に対して回転させて、図３３に示すように、上側縦支柱１８１、ロッド１８３および下側縦支柱１８２を互いに水平になるようにし、また、さらに、各上側縦支柱２０５Ｌ，２０５Ｒの本体１８５Ｌ，１８５Ｒをそれぞれ各下側縦支柱１８６Ｌ，１８６Ｒ内に納めつつ、本体１８５Ｌ，１８５Ｒをそれぞれ先端部１８４Ｌ，１８４Ｒに対し回転し下側横支柱１８２に沿わせるようにすれば、図３３に示すように先行手摺を折畳むことができる。
【０１１７】
すなわち、この第１０の実施の形態にあっても先行手摺をコンパクトにすることができる。また、従来の先行手摺より部品点数も少なくて済むので、先行手摺の重量も軽量とすることができ、製造コストも従来の先行手摺より低減されることとなる。
【０１１８】
反対に、この先行手摺を使用状態とするには、折畳まれた状態から、上記と逆に、本体１８５Ｌ，１８５Ｒをそれぞれ先端部１８４Ｌ，１８４Ｒに対し回転して直棒状体とし、さらに、各上側縦支柱２０５Ｌ，２０５Ｒの本体１８５Ｌ，１８６Ｒを各下側縦支柱１８６Ｌ，１８６Ｒ内から引出し規制部材Ｊで本体１８５Ｌ，１８６Ｒをそれぞれ各下側縦支柱１８６Ｌ，１８６Ｒに対して固定し、そして、スライド部材１８７を上側縦支柱１８１に対して軸方向にスライドさせつつロッド１８３を下側横支柱１８２に対して回転させて、ロッド１８３を下側横支柱１８２および上側縦支柱１８１に対して垂直になるようにし、さらに、各斜材１９０Ｌ，１９０Ｒをそれぞれ係止手段１９２Ｌ，１９２Ｒで各下側縦支柱１８６Ｌ，１８６Ｒに固定する。すると、斜材１９０Ｌ，１９０Ｒがそれぞれ下側縦支柱１８６Ｌ，１８６Ｒに固定され、下側横支柱１８２が斜材１９０Ｌ，１９０Ｒで固定され、上側横支柱１８１は、下側横支柱１８２が固定されているのでロッド１８３も回転しえなくなるので位置決めされ、さらに、上側縦支柱２０５Ｌ，２０５Ｒの先端部１８４Ｌ，１８４Ｒも上側横支柱１８１が位置決めされることにより、本体１８５Ｌ，１８５Ｒに対し回転しえなくなるので、結果的に、先行手摺の各部材を固定状態とすることができる。
【０１１９】
なお、先行手摺を階下から縦材Ｔに取付ける際には、斜材１９０Ｌ，１９０Ｒの先端を持ち上方に押し上げるようにして各下側縦支柱１８６Ｌ，１８６Ｒに対して各上側縦支柱２０５Ｌ，２０５Ｒを上方に移動させて先行手摺を使用状態に組立ることができ、斜材１９０Ｌ，１９０Ｒは下側の横支柱１８２に回転自在に取付けられているので、斜材が無く下側の横支柱１８２を利用して組立ざるをえない先行手摺に比較して、常に作業員が両腕を上方に挙げながらの先行手摺の取付作業が一層簡易となる。
【０１２０】
また、各縦支柱を縦材に固定する固定手段については第１の実施の形態と同様に、プレートＦと挟持具Ｋとをもしくは挟持具Ｋ２つを両方の縦支柱に設けるとしてもよく、さらに、第１の実施の形態と同様に適宜脆弱部を設けてもよい。
【０１２１】
つづいて、図３５および図３６に示す第１１の実施の形態について説明する。第１１の実施の形態における先行手摺は、図３５に示すように、一対の建枠の縦材Ｔ，Ｔ間に固定され、各縦材Ｔ，Ｔに固定される左右一対の縦支柱Ｖ１３，Ｖ１４と、各縦支柱Ｖ１３，Ｖ１４間に掛け渡される上下一対の横支柱２１１，２１２と、各横支柱２１１，２１２を間に掛け渡されるロッド２１３と、各縦支柱Ｖ１３，１４にスライド自在に挿入されたスライド部材２１６Ｌ，２１６Ｒと、当該各スライド部材２１６Ｌ，２１６Ｒに設けた縦材Ｔを抱持するプレートＦと、各縦支柱Ｖ１３，Ｖ１４に設けた縦材Ｔを挟持する挟持具Ｋとから構成されている。
【０１２２】
以下、詳細について説明すると、図３５に示すように、各縦支柱Ｖ１３，Ｖ１４は、それぞれ本体２１５Ｌ，２１５Ｒと、本体２１５Ｌ，２１５Ｒに回転自在に軸支された先端部２１４Ｌ，２１４Ｒとで構成されている。
【０１２３】
さらに詳しく説明すると、図３５中左側の左側縦支柱Ｖ１３において、先端部２１４Ｌは本体２１５Ｌの先端に回転自在に軸支されており、また、本体２１５Ｌの下方側部には第１の実施の形態と同様のバネ（付示せず）と係止部材（付示せず）とで構成される規制部材Ｊが設けられている。そして、当該本体２１５Ｌにはスライド部材２１６Ｌがスライド自在に装着されている。
【０１２４】
さらに、スライド部材２１６Ｌの図３２中上方側部には規制部材Ｊの係止部材（付示せず）が係合する孔（付示せず）が設けられており、この孔（付示せず）と規制部材Ｊの係止部材（付示せず）が係合すると、スライド部材２１６Ｌは、本体２１５Ｌに対して、移動することが規制される。また、左側縦支柱Ｖ１３の本体２１５Ｌの図３５中下端には、第１の実施の形態と同様の縦材Ｔを挟持する挟持具Ｋが設けられており、上記スライド部材２１６Ｌには縦材Ｔを抱持する第１の実施の形態と同様のプレートＦが設けられている。そして、他方の右側縦支柱Ｖ１２も上記した左側縦支柱Ｖ１３と同様の構成としてある。
【０１２５】
さらに、左側縦支柱Ｖ１３の先端部２１４Ｌの上端には、上側横支柱２１１の一端が、右側縦支柱Ｖ１４の先端部２１４Ｒの上端には、上側横支柱２１１の他端が連結されている。そして、左側縦支柱Ｖ１３の本体２１５Ｌには、下側横支柱２１２の一端がスライド自在に装着され、他方、右側縦支柱Ｖ１４の本体２１５Ｒには、下側横支柱２１２の他端がスライド自在に装着されている。したがって、下側横支柱２１２は、左右の縦支柱Ｖ１３，Ｖ１４上をスライドして移動することが可能である。
【０１２６】
そして、上側横支柱２１１と下側横支柱２１２には、双方を連結するロッド２１３が掛け渡されている。このロッド２１３は、その基端側が下側横支柱２１２の略中央で回転自在に軸支され、その先端側が上側横支柱２１１にスライド部材２１７を介してスライドおよび回転自在に装着されている。このスライド部材２１７も上述の第４の実施の形態のスライド部材８８Ｌ，８８Ｒに同様に構成され、上側横支柱２１１上をスライドして移動することが可能である。
【０１２７】
また、図示はしないが、上記スライド部材２１７を固定するために、スライド部材２１７が装着されている上側横支柱２１１内に、上述の第１の実施の形態と同様のバネと係止部材の組合せによる規制部材が納めて、スライド部材２１７を、上側横支柱１８１上に固定することを可能としてもよい。
【０１２８】
さて、この実施の形態にあっては、スライド部材２１７を上側縦支柱２１１に対して左右のどちらかの方向にスライドさせつつロッド２１３を下側横支柱２１２に対して回転させて、図３６に示すように、上側縦支柱２１１、ロッド２１３および下側縦支柱２１２を互いに水平になるようにし、また、さらに、各上側縦支柱Ｖ１３，Ｖ１４の本体２１５Ｌ，２１５Ｒをそれぞれ先端部２１４Ｌ，２１４Ｒに対し回転し下側横支柱２１２に沿わせるようにすれば、図３３に示すように先行手摺を折畳むことができる。
【０１２９】
すなわち、この第１１の実施の形態にあっても先行手摺をコンパクトにすることができる。また、従来の先行手摺より部品点数も少なくて済むので、先行手摺の重量も軽量とすることができ、製造コストも従来の先行手摺より低減されることとなる。
【０１３０】
また、この先行手摺においては、プレートＦが設けられた各スライド部材２１６Ｌ，２１６Ｒは、それぞれ各縦支柱Ｖ１３，１４に対し、軸方向にスライドさせることができるので、この先行手摺を縦材Ｔに取付ける際には、まず、スライド部材２１６Ｌ，２１６Ｒをそれぞれ各縦支柱Ｖ１３，Ｖ１４の上方に位置させておき、縦材ＴにプレートＦを取付けることができる。さらに、この状態から各縦支柱Ｖ１３，１４を縦材Ｔに固定されたスライド部材２１６Ｒ，２１６Ｌに対し上方にスライドさせて、挟持具Ｋで縦材Ｔを挟持するとすれば良いこととなる。すなわち、この実施の形態における先行手摺においては、先行手摺を縦材Ｔに取付ける際に、先行手摺をまずプレートＦで縦材Ｔに仮止めして、先行手摺が縦材Ｔから脱落しえない状態にしておくことができ、かつ、先行手摺を仮止める際には先行手摺をさほど上方に持ち上げなくて済むので、作業員の取付作業が容易となるのと同時に、仮止めする際の先行手摺の重心は、従来の先行手摺に比較して低い位置となるので、作業員がふらつくことが寄り防止され、作業員の安全性が図られることとなる。
【０１３１】
また、各縦支柱を縦材に固定する固定手段については、挟持具Ｋ２つを両方の縦支柱に設けるとしてもよく、さらに、第１の実施の形態と同様に適宜脆弱部を設けてもよい。
【０１３２】
【発明の効果】
各請求項の発明によれば、先行手摺をコンパクトにすることができる。また、従来の先行手摺より部品点数も少なくて済むので、先行手摺の重量も軽量とすることができ、製造コストも従来の先行手摺より低減されることとなる。また、折畳の方法も簡易で、その取付の際の組立も簡易であると同時に、強度の点でも有利となる。
【０１３３】
また、請求項１１の発明によれば、スライド部材にプレートもしくは挟持具を設けているので、先行手摺を縦材に取付ける際に、先行手摺をまずプレートもしくは挟持具で縦材に仮止めして、先行手摺が縦材から脱落しえない状態にしておくことができ、かつ、先行手摺を仮止める際には先行手摺をさほど上方に持ち上げなくて済むので、作業員の取付作業が容易となるのと同時に、仮止めする際の先行手摺の重心は、従来の先行手摺に比較して低い位置となるので、作業員がふらつくことが寄り防止され、作業員の安全性が図られることとなる。
【０１３４】
さらに、請求項１１，１２の発明によれば、プレートに切欠を設けたので、縦材に手摺支柱を取付ける際、縦材に取付けられた種々の部材が、切欠内を通過させることが可能であるので、種々の部材が邪魔になることはない。
【０１３５】
そして、請求項１１，１３の発明によれば、楔を抜くことで、縦材が積層されていても、縦材から取り外すことができるので便利である。
【０１３６】
また、請求項１４の発明によれば、他方の下側縦支柱に引掛部材を設けることにより、先行手摺を軽量なものとすることができるので、運搬に便利で、製造コストも低減される。
【０１３７】
そして、請求項１５の発明によれば、命綱を先行手摺の横支柱に取付けた作業者が枠組足場上で作業中に足を踏み外すなどして、下方に落下してしまう事態となり、先行手摺に大きな衝撃荷重が負荷された場合に落下した作業者にその反作用として大きな衝撃力が作用することとなるが、脆弱部が積極的に変形して、その作業者に作用する衝撃力を緩和する。すなわち、この脆弱部は、枠組足場から落下する作業者に負荷される衝撃力を緩和することができるので、作業者に大きな衝撃力が作用して負傷することを防止することができるので、従来の先行手摺に比較して安全性が向上される。
【図面の簡単な説明】
【図１】第１の実施の形態における先行手摺の正面図である。
【図２】第１の実施の形態における規制部材の拡大縦断面図である。
【図３】コンパクトにした状態における第１の実施の形態の先行手摺の正面図である。
【図４】建枠の縦材間に取付けた状態における第１の実施の形態の先行手摺の正面図である。
【図５】脆弱部にて変形した状態を示す第１の実施の形態における先行手摺の正面図である。
【図６】プレートの拡大平面図である。
【図７】挟持具の拡大平面図である。
【図８】脆弱部の一例を示す正面図である。
【図９】第２の実施の形態における先行手摺の正面図である。
【図１０】第２の実施の形態における先行手摺の左側の下側縦支柱の拡大正面図である。
【図１１】コンパクトにした状態における第２の実施の形態の先行手摺の正面図である。
【図１２】第３の実施の形態における先行手摺の正面図である。
【図１３】第３の実施の形態における先行手摺の上側横支柱の拡大正面図である。
【図１４】第３の実施の形態における先行手摺の規制部材の拡大横断面図である。
【図１５】コンパクトにした状態における第３の実施の形態の先行手摺の正面図である。
【図１６】第４の実施の形態の先行手摺の正面図である。
【図１７】第４の実施の形態の先行手摺の下側の左側横支柱の拡大正面図である。
【図１８】コンパクトにした状態における第４の実施の形態の先行手摺の正面図である。
【図１９】第５の実施の形態の先行手摺の正面図である。
【図２０】第５の実施の形態の先行手摺の左側縦支柱の一部の拡大正面図である。
【図２１】コンパクトにした状態における第５の実施の形態の先行手摺の正面図である。
【図２２】第６の実施の形態の先行手摺の正面図である。
【図２３】第６の実施の形態の先行手摺の左側縦支柱の一部の拡大右側面図である。
【図２４】第７の実施の形態の先行手摺の正面図である。
【図２５】コンパクトにした状態における第７の実施の形態の先行手摺の正面図である。
【図２６】第８の実施の形態の先行手摺の正面図である。
【図２７】第８の実施の形態の先行手摺の上側横支柱の一部の拡大正面図である。
【図２８】第８の実施の形態の先行手摺の上側横支柱の一部の拡大立面図である。
【図２９】コンパクトにした状態における第８の実施の形態の先行手摺の正面図である。
【図３０】第９の実施の形態の先行手摺の正面図である。
【図３１】コンパクトにした状態における第９の実施の形態の先行手摺の正面図である。
【図３２】第１０の実施の形態の先行手摺の正面図である。
【図３３】コンパクトにした状態における第１０の実施の形態の先行手摺の正面図である。
【図３４】第１０の実施の形態の先行手摺の下側横支柱の一部の拡大正面図である。
【図３５】第１１の実施の形態の先行手摺の正面図である。
【図３６】コンパクトにした状態における第１１の実施の形態の先行手摺の正面図である。
【符号の説明】
１，４１，Ｘ１，Ｘ３，１０１，１２１，Ｘ５，Ｘ７，１７１、１８１，２１１上側横支柱
２，４２、Ｘ２，Ｘ４，１０２，１２２，Ｘ６，Ｘ８，１７２、１８２，２１２下側横支柱
３，４３，６３，８３，１０３，１２３，１７３、１８３，２１３ロッド
５Ｌ，５Ｒ，４５Ｌ，４５Ｒ，１０８Ｌ，１０８Ｒ，１２４Ｌ，１２４Ｒ，１４３Ｌ，１４３Ｒ，２０５Ｌ，２０５Ｒ上側縦支柱
６Ｌ，６Ｒ，４６Ｌ，４６Ｒ，１１５Ｌ，１１５Ｒ，１２５Ｌ，１２５Ｒ，１４５Ｌ，１４５Ｒ，１８６Ｌ，１８６Ｒ下側横支柱
４９Ｌ，４９Ｒ，８７Ｌ，８７Ｒ，１９０Ｌ，１９０Ｒ斜材
６１Ｌ，６２Ｌ，８１Ｌ，８２Ｌ，１５１Ｌ，１５２Ｌ左側横支柱
６１Ｒ，６２Ｒ，８１Ｒ，８２Ｒ，１５１Ｒ，１５２Ｒ左側横支柱
６７Ｌ，８６Ｌ，１５５Ｌ，１７４Ｌ，Ｖ１，Ｖ３，Ｖ５，Ｖ７，Ｖ９，Ｖ１１，Ｖ１３左側縦支柱
６７Ｒ，８６Ｒ，１５５Ｒ，１７４Ｒ，Ｖ２，Ｖ４，Ｖ６，Ｖ８，Ｖ１０，Ｖ１２，Ｖ１４左側縦支柱
１０４，２１６Ｌ，２１６Ｒスライド部材
１０５Ｌ，１０５Ｒ，１８５Ｌ，１８５Ｒ，２１５Ｌ，２１５Ｒ本体
１０７Ｌ，１０７Ｒ，１８４Ｌ，１８４Ｒ，２１４Ｌ，２１４Ｒ先端部
１５８連結部
Ｆ，Ｆ１プレート
Ｈ１，Ｈ２，Ｈ３引掛部材
Ｋ挟持具
１４１Ｌ，１４２Ｌアウターチューブたる左側横支柱
１４１Ｒ，１４２Ｒインナーロッドたる右側横支柱
Ｔ縦材
Ｚ脆弱部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an improvement of a preceding handrail attached to a frame of a framed scaffold used at a construction site or a civil engineering work site.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a framework scaffold is installed when a building or the like is constructed, and an operator walks and performs work on the framework scaffold. For safety of the worker, a handrail is attached to a construction frame of the framework scaffold.
[0003]
In particular, when the framed scaffold is stacked upward to increase the height, it is dangerous for the worker to work on the framed scaffold where no handrail is installed. In order to be able to attach the handrails of the upper framework scaffold, a preceding handrail is used which can be fixed above the vertical members of the lower framework scaffold.
[0004]
That is, since the worker can attach the leading handrail of the framed scaffolding on the floor on the framed scaffolding downstairs, when stacking the framed scaffolding, the worker always works on the scaffolding with the leading handrailing installed. And the safety of workers is achieved.
[0005]
By the way, the leading handrail is attached to the vertical member in this way, but this leading handrail is installed so as to bridge between the vertical members, and it is inevitably large and bulky for the safety of workers, Since the width of the scaffold used is narrow, it is inconvenient for an operator to carry and attach the preceding handrail.
[0006]
Therefore, there has been proposed a leading handrail that can fold the leading handrail compactly (for example, see Patent Document 1).
[0007]
[See Patent Document 1]
JP-A-2002-201792 (page 29, left column, line 29 to page 3, right column, third line, FIGS. 1 to 3)
[0008]
[Problems to be solved by the invention]
However, this conventional foldable preceding handrail is very convenient for transportation and storage in that it is compact, but has the following disadvantages.
[0009]
That is, in order to make the preceding handrail compact, the number of components increases, and the weight of the preceding handrail increases. Then, this increase in weight is rather inconvenient when transporting the preceding handrail, and the configuration of JP-A-2002-201792 has an extremely large number of parts, a complicated structure, and a low manufacturing cost.
[0010]
In addition, in the configuration of JP-A-2002-201792, it is pointed out that the folding method is complicated, the assembly at the time of mounting is troublesome, and the number of movable parts is so large that there is a problem in strength. Could be done.
[0011]
Accordingly, the present invention has been made in order to improve the above-mentioned disadvantages, and an object of the present invention is to provide a leading handrail which is lightweight, economical, and excellent in strength even if it can be made compact. It is to be.
[0012]
[Means for Solving the Problems]
The first means for solving the problems of the present invention comprises a pair of left and right vertical columns fixed between the vertical members of a pair of building frames, and a pair of upper and lower horizontal columns spanned between the vertical columns. In the preceding handrail provided with, each horizontal support is connected by a rod at substantially the center, each vertical support is composed of an upper vertical support and a lower vertical support, and a pair of horizontal supports are connected between each upper vertical support. In addition to providing fixing means for fixing each lower vertical column to the vertical member on each lower vertical column, the upper vertical column is attached to the lower vertical column so as to be movable in the axial direction. I do.
[0013]
The second problem solving means of the present invention comprises a pair of left and right vertical columns fixed between the vertical members of the pair of building frames, a pair of left and right vertical columns fixed to each vertical column, and a pair of upper and lower horizontal columns spanned between the vertical columns. In the preceding handrail provided with, a pair of left and right diagonal members whose base ends are rotatably supported at the lower horizontal support are connected to each horizontal support by a rod at substantially the center, and each vertical support is vertically A pair of horizontal columns are connected between the upper vertical columns, and a locking means for locking one lower vertical column and one diagonal member and the other lower vertical column. A locking means for locking the support and the other oblique member and a fixing means for fixing each lower vertical support to the vertical support are provided on each lower vertical support, and the upper vertical support is axially attached to the lower vertical support. Characterized by being mounted so as to be movable along.
[0014]
A third means for solving the problem of the present invention comprises a pair of left and right vertical columns fixed between the vertical members of the pair of building frames, a pair of left and right vertical columns fixed to each vertical column, and a pair of upper and lower horizontal columns spanned between the vertical columns. In the preceding handrail provided with, each horizontal support is composed of a left horizontal support and a right horizontal support, and one end of each left horizontal support is rotatably supported on the left vertical support, and each right support is supported on the right vertical support. One end of the horizontal support is rotatably supported, and the other end of the left horizontal support and the other end of the right horizontal support of the upper horizontal support are rotatably supported at the distal end, and the lower horizontal support is provided at the base end. A rod for rotatably supporting the other end of the left lateral column and the other end of the right lateral column of the column is provided, and each vertical column is provided with fixing means for fixing each vertical column to the vertical member. And
[0015]
A fourth object of the present invention is to provide a vehicle comprising: a pair of left and right vertical columns fixed between the vertical members of a pair of building frames; a pair of left and right vertical columns fixed to each vertical column; In the preceding handrail provided with, each horizontal support is composed of a left horizontal support and a right horizontal support, and one end of each left horizontal support is rotatably supported on the left vertical support, and each right support is supported on the right vertical support. One end of the horizontal support is rotatably supported, and the other end of the left horizontal support and the other end of the right horizontal support of the upper horizontal support are rotatably supported at the distal end, and the lower horizontal support is provided at the base end. A rod that rotatably supports the other end of the left lateral column and the other end of the right lateral column of the column, and the tip side is slidably and rotatably mounted on the lower left lateral column, and the base side is freely rotatable on the left vertical column. The left diagonal member and the tip end are slidably and rotatably mounted on the lower right lateral column. Re base end provided with right diagonal members which are rotatably supported on the right vertical struts, characterized in that each longitudinal strut each longitudinal strut formed by providing a fixing means for fixing to the longitudinal members.
[0016]
A fifth means for solving the problem of the present invention comprises a pair of left and right vertical columns fixed between the vertical members of the pair of building frames, a pair of left and right vertical columns fixed to each vertical column, and a pair of upper and lower horizontal columns spanned between the vertical columns. In the preceding handrail provided with, each vertical strut comprises a lower vertical strut composed of a main body and a tip end rotatably supported by the main body, and a hollow upper vertical strut, and the tip end portion is an upper vertical strut. The slide member is slidably inserted into the inside, and the slide member slidably inserted into the lower horizontal support or the upper horizontal support and the horizontal support at the tip where the slide member is not inserted are freely rotatable. And a rod for rotatably supporting the slide member at the base end at the base end, connecting the upper end of each upper vertical support to the upper horizontal support, and connecting both ends of the lower horizontal support to the lower support, respectively. Attach slidably to the side vertical column and attach each vertical column to the body of each lower column. The column is characterized in that formed by providing a fixing means for fixing to the longitudinal members.
[0017]
The sixth problem solving means of the present invention comprises a pair of left and right vertical columns fixed between the vertical members of the pair of building frames, a pair of left and right vertical columns fixed to each vertical column, and a pair of upper and lower horizontal columns spanned between the vertical columns. In the preceding handrail provided with, each horizontal support is connected by a rod at substantially the center, each vertical support is composed of an upper vertical support and a lower vertical support, and a pair of horizontal supports are connected between each upper vertical support. A fixing means for fixing each lower vertical strut to the vertical member on each lower vertical strut, and each upper vertical strut is rotatably supported by the corresponding lower vertical strut. And
[0018]
A seventh problem solving means of the present invention comprises a pair of left and right vertical columns fixed between the vertical members of a pair of building frames, a pair of left and right vertical columns fixed to each vertical column, and a pair of upper and lower horizontal columns spanned between the vertical columns. In the preceding handrail provided with, each horizontal strut comprises an outer tube connected to one vertical strut and an inner rod movably inserted into the outer tube and connected to the other vertical strut, and each vertical strut is Fixing means for forming the struts with an upper longitudinal strut and a lower longitudinal strut respectively, connecting a pair of horizontal struts between the upper longitudinal struts, and fixing each lower longitudinal strut to each lower longitudinal strut to the longitudinal member. And each upper vertical column is rotatably supported by each lower vertical column.
[0019]
Eighth problem solving means of the present invention comprises a pair of left and right vertical columns fixed between the vertical members of a pair of building frames, a pair of left and right vertical columns fixed to each vertical column, and a pair of upper and lower horizontal columns spanned between the vertical columns. In the preceding handrail provided with, each horizontal strut is constituted by a left lateral strut, a right lateral strut, and a connecting portion for rotatably supporting the left lateral strut and the right lateral strut so as to be horizontally rotatable. It is characterized in that a fixing means for fixing the vertical support to the vertical member is provided.
[0020]
A ninth problem-solving means of the present invention includes a pair of left and right vertical columns fixed between the vertical members of a pair of building frames, and a pair of upper and lower horizontal columns spanned between the vertical columns. In the preceding handrail provided with, a rod for rotatably supporting the substantially central portion of each lateral support at the distal end and the proximal end is provided, and the distal end of each lateral support is rotatably supported on the left vertical support while the right side is supported. The vertical strut is rotatably supported at the base end of each horizontal strut, and each vertical strut is provided with fixing means for fixing each vertical strut to the vertical member.
[0021]
The tenth problem solving means of the present invention comprises a pair of left and right vertical columns fixed between the vertical members of a pair of building frames, a pair of left and right vertical columns fixed to each vertical column, and a pair of upper and lower horizontal columns spanned between the vertical columns. In the preceding handrail provided with, each vertical support comprises an upper vertical support composed of a main body and a tip rotatably supported by the main body, and a hollow lower vertical support, and the main body is a lower vertical support. The slide member is slidably inserted into the inside, and the slide member slidably inserted into the upper horizontal support or the lower horizontal support and the horizontal support on the side where the slide member is not inserted at the tip are rotatable. And a rod for rotatably supporting the slide member at the base end at the base end, connecting the upper end of each upper vertical support to the upper horizontal support, and connecting both ends of the lower horizontal support to the upper vertical support, respectively. Attach slidably to the main body of the support, and attach the base end to the lower horizontal support A pair of left and right diagonal members rotatably supported are provided, and locking means for locking one lower vertical column and one diagonal member, and locking the other lower vertical column and the other diagonal member. And a fixing means for fixing each lower vertical support to the vertical member on each lower vertical support.
[0022]
An eleventh problem solving means of the present invention includes a pair of left and right vertical columns fixed between the vertical members of a pair of building frames, a pair of left and right vertical columns fixed to each vertical column, and a pair of upper and lower horizontal columns spanned between the vertical columns. In the preceding handrail provided with, the vertical strut comprises a main body and a tip end rotatably supported by the main body, and a slide member and a tip end slidably inserted into the upper horizontal strut or the lower horizontal strut. And a rod for rotatably supporting a substantially central portion of the lateral support on the side where the slide member is not inserted and rotatably supporting the slide member at a base end. Attaching to the horizontal support, slidably mounting both ends of the lower horizontal support to the main body of the vertical support, and holding the vertical member slidably to the main body of each vertical support. Attach the fixtures and clamp the vertical members to the body of each vertical column The plate comprises a plate main body, a notch provided from the distal end side to the base end side of the plate main body, and a holding hole for holding a vertical member provided at an intermediate portion of the notch. The holding device includes a holding device main body, a notch provided at a distal end side of the holding device body for inserting a vertical member, and a wedge mechanism for holding the vertical member in cooperation with the notch provided at the front end of the holding device body. And characterized in that:
[0023]
According to a twelfth aspect of the present invention, in any one of the first to tenth aspects, the fixing means comprises: a plate having a base end fixed to each vertical support and holding the vertical member; The plate comprises a plate body, a notch provided from the distal end side to the base end side of the plate body, and a vertical member provided at an intermediate portion of the notch. The holding device is constituted by a holding device main body, a notch for inserting a vertical member provided at a distal end side of the holding device main body, and the notch provided at a front end of the holding device main body. And a wedge mechanism that works to pinch the vertical member.
[0024]
A thirteenth problem solving means of the present invention is the fixing device according to any one of the first to tenth problem solving means, wherein the fixing means comprises two holding tools for holding the vertical member, the base end side of which is fixed to each vertical support, The holding device includes a holding device main body, a notch for inserting a vertical member provided on the distal end side of the holding device main body, and a wedge mechanism for holding the vertical member in cooperation with the notch provided on the front end of the holding device main body. It is characterized by comprising.
[0025]
According to a fourteenth aspect of the present invention, in any one of the first to tenth aspects, the fixing means comprises: a plate having a base end fixed to one of the vertical columns and holding the vertical member; A side is fixed to one of the vertical supports, and includes a holding tool for holding the vertical member, and a pair of hooking members provided on the other vertical support, and the plate includes a plate body and an adjacent preceding handrail provided on the plate body. An insertion hole into which one hooking member is inserted, a notch provided from the distal end side of the plate body toward the base end side, and a holding hole for holding a vertical member provided at an intermediate portion of the notch, The holding device includes a holding device main body, an insertion hole into which the other hooking member of the adjacent preceding handrail provided in the holding device main body is inserted, and a notch for inserting a vertical member provided on the distal end side of the holding device main body. A wedge mechanism for holding the vertical member in cooperation with the notch provided at the tip of the holding tool body. And characterized in that it is configured.
[0026]
According to a fifteenth aspect of the present invention, in any one of the first to fourteenth aspects, a position where the upper horizontal support is provided near the left and right ends of each horizontal support and on each vertical support. A fragile portion is provided between each of the lower and the position where the lower horizontal column is provided.
[0027]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The present invention includes a first embodiment shown in FIGS. 1 to 8, a second embodiment shown in FIGS. 9 to 11, a third embodiment shown in FIGS. 12 to 15, A fourth embodiment shown in FIGS. 16 to 18, a fifth embodiment shown in FIGS. 19 to 21, a sixth embodiment shown in FIGS. 22 to 23, and FIGS. 24 to 25. The seventh embodiment shown in FIG. 26, the eighth embodiment shown in FIGS. 26 to 29, the ninth embodiment shown in FIGS. 30 to 31, and the tenth embodiment shown in FIGS. There is an embodiment and an eleventh embodiment shown in FIGS.
[0028]
As shown in FIG. 1, the preceding handrail in the first embodiment shown in FIGS. 1 to 8 is fixed between the vertical members T, T of a pair of building frames, and is fixed to each of the vertical members T, T. A pair of left and right vertical columns V1, V2, a pair of upper and lower horizontal columns 1, 2 spanned between the vertical columns V1, V2, a rod 3 connecting the horizontal columns 1, 2 substantially at the center thereof, and fixing means; It is composed of a plate F for holding the vertical member T provided on one of the vertical columns V1, a holding member K for holding the vertical member T, and a pair of hook members H1 and H2 provided on the other vertical column V2. .
[0029]
The details will be described below. As shown in FIG. 1, each of the vertical columns V1 and V2 is composed of upper vertical columns 5L and 5R and lower vertical columns 6L and 6R, respectively. The shape of the upper vertical columns 5L and 5R is as follows. The lower vertical columns 6L and 6R have a substantially C-shaped cross section as shown in FIGS. 6 and 7, and each of the lower vertical columns 6L and 6R has an upper side inside each of the lower vertical columns 6L and 6R. The vertical supports 5L and 5R are slidably inserted in the vertical direction in FIG. The lower vertical columns 6L and 6R are provided with holes 4 and 4 at the upper and lower sides thereof, and the lower vertical columns 6L and 6R are also provided with holes 13 near the lower ends of the upper vertical columns 5L and 5R. Further, substantially bar-shaped handles 7, 7 are provided below the upper vertical columns 5L, 5R in FIG.
[0030]
As shown in FIG. 2, the upper vertical support 5L and the lower vertical support 6L are vertically moved relative to each other in the vertical direction in FIG. 1 and the upper vertical support 5R and the lower A spring B and a locking member 10 that constitute a regulating member J that regulates a relative movement in the vertical direction in FIG. 1 with the side vertical support 6R are provided. The spring B is a leaf spring having a shape obtained by bending a rectangular metal plate. One of the arms has a hole (not shown) for inserting the locking member 10, and the other arm has a hole (not shown). The locking member 10 is inserted into the head 11 having a spherical head and a skirt 12 extending from the base of the head. The head 11 and the skirt 12 are integrally formed. Have been. The head 11 and the skirt portion 12 may be integrally formed, or may be integrally formed by connecting the skirt portion 12 to the head 11 by screwing or the like.
[0031]
The restricting member J thus configured is provided in the upper vertical columns 5L, 5R such that the head 10 is urged by the spring B to project into the holes 13, 13 provided in the upper vertical columns 5L, 5R. It is provided in. That is, since one regulating member J is provided for each of the left and right upper vertical columns 5L and 5R, a total of two regulating members J are provided.
[0032]
Further, each of the upper vertical columns 5L, 5R thus configured is inserted into the lower vertical columns 6L, 6R as shown in FIG. 1, but the hole 13 just described above is inserted into the lower vertical columns 6L, 6R. When the head 10 of the regulating member J overlaps with the holes 4 and 4 of the above, the head 10 of the regulating member J is urged by the spring B and projects into the hole 4, whereby the upper vertical columns 5L and 5R are lowered. The movement with respect to the side vertical columns 6L and 6R is regulated. Here, since holes 4 and 4 are provided at two upper and lower positions in the lower vertical columns 6L and 6R, the upper vertical columns 5L and 5R are connected to the lower vertical columns 6L and 6R. On the other hand, movement is regulated at two places. That is, the vertical columns V1 and V2 can be maintained in the most extended state and the most contracted state. When the upper vertical support 5L is moved with respect to the lower vertical support 6L, the head 10 of the regulating member J is pushed into the upper vertical support 5L to disengage the head 10 from the hole 4. Can be moved freely. Therefore, since each part is fixed by the regulating member J having such a simple structure in which the spring and the locking member are combined, the leading handrail can be easily assembled and made compact. Since the regulating member J is provided inside the handrail, the regulating member J does not fall off from the preceding handrail, and there is no danger of the regulating member J dropping from a high place, so that the safety of the preceding handrail is improved, and at the same time, the regulating member J is lost. Is prevented. This has the same effect in other embodiments described later in which the same regulating member is provided.
[0033]
The upper vertical columns 5L and 5R are connected to the upper and lower ends of the horizontal columns 1 and 2, respectively, and the upper and lower horizontal columns 1 and 2 are connected at substantially the center by a rod 3. . The horizontal columns 1, 2 and the rod 3 are also formed of a hollow pipe material in order to reduce the weight of the leading handrail. That is, the upper vertical columns 5L and 5R and the horizontal columns 1 and 2 form a frame. As described above, since the frame is used, the strength is superior to that of the conventional preceding handrail.
[0034]
Further, a plate F for fixing the lower vertical column 6L to the vertical member T and a holding member K are fixed to one lower vertical column 6L by welding or the like. As shown in FIG. 6, the plate F holds the plate body 20, a notch 21 provided from the distal end side to the base end side of the plate body 20, and a vertical member T provided at an intermediate portion of the notch 21. And a hole 23 provided in the plate body 20 into which a hooking member H1 described later is inserted, and a base end thereof is fixed to a substantially central portion of the lower vertical column 6L. The plate body 20 is formed of a flat plate, and is provided with a pair of opposed rising portions 24 and 25 on its side. The rising portions 24 and 25 are provided for compensating the strength, but can be used without any particular provision.
[0035]
On the other hand, as shown in FIG. 7, the holding device K includes a holding device main body 27, a notch 32 for inserting a vertical member T provided at the distal end side of the holding device main body 27, and the above-described provided at the front end of the holding device main body 27. It is composed of a wedge mechanism U for holding the vertical member T in cooperation with the notch 32, and a hole 33 provided in the holding tool main body 27, into which a hook member H2 described later is inserted, the base end of which is the lower end of the vertical support 6L. It is fixed near the side. And the holding | maintenance tool main body 27 is formed with a flat plate, and the pair of rising parts 30 and 31 which oppose on the side are provided. The rising portions 30 and 31 are provided for compensating the strength, but can be used without providing them.
[0036]
The wedge mechanism U includes a wedge 28 and a substantially U-shaped fixture 29 for fixing the wedge 28, and the U-shaped opening end side of the fixture 29 is joined to the lower surface of the holding tool main body 27. A wedge 28 is inserted into a slit formed by the holding tool main body 27 and the fixing tool 29.
[0037]
Now, as to how to attach the lower vertical support 6L to the vertical member T, first, the vertical member T is inserted into the holding hole 22 of the plate F from above the vertical member T. At this time, since the notch 21 is provided in the plate F, various members (not shown) that would be attached to the longitudinal member T can pass through the notch 21. Is not in the way.
[0038]
Next, the vertical member T is inserted into the notch 32 of the holding tool K, and the wedge 28 is driven in the direction of the notch 32 while the wedge 28 is inserted into the slit formed by the fixing tool 29 and the holding tool body 27 from the side. That is, the notch 32 and the wedge 28 hold the vertical member T, and the holding member K and the vertical member T are fixed. Then, the lower vertical column 6L is fixed to the vertical member T.
[0039]
In addition, hook members H1 and H2 are fixed to the lower end of the lower column 6R by welding or the like at its lower end and its central side. The hook members H1 and H2 are respectively provided with a base end portion 14 fixed to the lower vertical support 6R, an inclined portion 15 extending from the base end portion 14, and an insertion portion 16 suspended from the inclined portion 15. It is composed of Then, when fixing the lower vertical column 6R to the vertical member T, as shown in FIG. 4, the respective insertion portions 16, 16 of the hook members H1, H2 are connected to the plate of the adjacent lower vertical column 6R. Insert into the hole 23 of F and the hole 33 of the holder K. Therefore, in the preceding handrail according to the first embodiment, as shown in FIG. 4, it can be fixed to the vertical member T by cooperating with the adjacent preceding handrail. Further, a plate F and a holding device K may be provided on both lower vertical supports 6L, 6R to fix the leading handrail to the vertical members T, T. However, as described above, the preceding handrail is hooked on the other lower vertical support. By providing the member, the leading handrail can be made lightweight, so that it is convenient to carry and the manufacturing cost is reduced. In addition, since the preceding handrail includes the above-mentioned plate, holding device, and hooking member, as shown in FIG. 4, the lower vertical columns 6L, 6R are respectively placed above the vertical members T, T. Can be fixed. That is, in this way, the preceding handrail on the floor can be attached from the framework scaffolding on the lower floor. Although one plate F and one holding device K are provided on one lower vertical support 6L in the drawing, the plate F is used as a holding device K, that is, only two holding devices K are used. It may be provided. Then, when fixing with the plate F and the holding tool K, the preceding handrail cannot be moved when the vertical members T are stacked upward, but in the case of only the holding tool K, the wedge is pulled out. Even if the vertical members T are stacked, it is convenient because they can be removed from the vertical members T. In addition, two holding tools K may be similarly provided on the other lower vertical support 6R. By the way, when the plate F and the holding tool K are also provided on the other lower vertical support 6R, the plates F and the holding tool K do not need to be provided with the holes 23 and 33 for inserting the hook members H1 and H2. This is the same in other embodiments. Further, in the place shown in FIG. 4, a toe plate 300 is detachably attached to the preceding handrail. The toe plate 300 has an L-shaped shape including a parallel portion (not shown) extending from the lower end of the rectangular toe plate main body 300a toward the back surface in FIG. Holes 301, 301 are drilled above. In addition, hook portions (not shown) that can be inserted into the respective holes 301, 301 of the toe plate 300 are provided on the lower vertical columns 6L, 6R on the left and right sides of the leading handrail, and the toe plate 300 is attached to the leading handrail. It can be installed. The hooks (not shown) may be configured such that the insertion portions 16 of the hooking members H1 and H2 provided on the lower right vertical column 6R face upward in FIG. The parallel portion (not shown) of the toe plate 300 attached to the preceding handrail is provided so that no gap is generated between the scaffold plate and the toe plate 300 which will be attached to the building frame. Is what it is. Therefore, in this toe plate 300, there is no gap between the toe plate and the above-mentioned scaffold plate, so that an operator steps on the scaffold plate and falls downward, or a tool or the like falls below the scaffold plate. Is prevented, and safety is improved. In addition, in order to attach the toe plate 300 to the preceding handrail, it goes without saying that other commonly used means other than those described above may be used. Incidentally, even in each of the embodiments described later, it is possible to attach the toe plate 300 described above.
[0040]
Further, the position where the horizontal support 1 is provided near the left and right ends of each of the horizontal supports 1 and 2 of the preceding handrail and the upper vertical support 5L and 5R and the position where the lower horizontal support 2 is provided. A weak portion Z is provided between them. The weak portion Z is formed by providing a small-diameter portion in the upper vertical support 5L as illustrated in FIG. 8, for example, taking the upper vertical support 5L as an example. That is, in the preceding handrail provided with such a fragile portion Z, when a large load is applied, stress concentrates on the small-diameter portion serving as the fragile portion Z, and the fragile portion Z moves to another portion. Deforms ahead of time. Therefore, as shown in FIG. 5, a worker who attaches the lifeline to the horizontal support of the preceding handrail may drop down, for example, stepping off the work while working on the framework scaffold, causing a large impact on the preceding handrail. When a load is applied, a large impact force acts on the dropped worker as a reaction thereto, but the fragile portion Z is positively deformed to reduce the impact force acting on the worker. That is, since the fragile portion Z can reduce the impact force applied to the worker falling from the framework scaffold, it is possible to prevent the worker from being injured due to a large impact force acting on the worker. Safety is improved as compared with the conventional preceding handrail. In the present embodiment, the fragile portion Z is provided at a position as shown in FIG. 1, but the fragile portion Z may be provided at another position of the preceding handrail. Further, the weak portion Z may not be a small-diameter portion but may have another configuration. For example, a notch may be provided, or each of the struts of the preceding handrail may be divided, and the divided struts may be connected by another small-diameter member. Alternatively, the struts of the preceding handrail may be divided and the divided struts may be connected by a coil spring to form a weak portion.
[0041]
By the way, as shown in FIG. 3, the leading handrail according to the first embodiment having the above-described configuration is configured such that the upper vertical columns 5L and 5R are respectively accommodated in the corresponding lower vertical columns 6L and 6R, and are left as they are. The state can be maintained by the regulating member J. At this time, since the lower vertical columns 6L and 6R have a substantially C-shaped cross section, the upper and lower horizontal columns 1 and 2 and the handles 7, 7 connected to the upper vertical columns 5L and 5R do not interfere. Absent. That is, the preceding handrail can be made compact. Further, since the number of parts is smaller than that of the conventional handrail, the weight of the preceding handrail can be reduced, and the manufacturing cost can be reduced as compared with the conventional handrail. In addition, the method for making the device compact is simple, and the assembling at the time of mounting is simple, and at the same time, it is advantageous in terms of strength. When the leading handrail is attached to the vertical member T from the floor below, the upper vertical pillars 5L, 5R are moved upward with respect to the lower vertical pillars 6L, 6R using the handles 7, 7, and the leading handrail is moved. Can be assembled for use. Since the handles 7, 7 are mounted below the lower horizontal support 2, the handles 7, 7 are not used and the lower horizontal support 2 must be used. Compared with a non-preceding handrail, the work of attaching the preceding handrail while the operator always raises both arms is further simplified.
[0042]
The shapes of the upper vertical supports 5L and 5R and the lower vertical supports 6L and 6R are determined when the upper vertical supports 5L and 5R are inserted into the lower vertical supports 6L and 6R as shown in FIGS. The upper and lower vertical columns 5L and 5R in FIGS. 6 and 7 are made to abut against the inner surfaces of the lower vertical columns 6L and 6R. Since it is regulated by projecting into the hole 4, the vertical columns V1 and V2 are prevented from rattling in the most extended state. It is necessary to allow the upper and lower horizontal columns 1 and 2 coupled to the upper vertical columns 5L and 5R to pass through the cross-sectional shape of the lower vertical columns 6L and 6R. These upper and lower vertical columns 5L, 5R, 6L, 6R may have other shapes. The same is true for other embodiments described later. As long as the leading handrail can be made compact and there is no backlash in each part, the shape of each member is replaced with a shape other than the shape described in the detailed description. May be.
[0043]
Next, the preceding handrail according to the second embodiment shown in FIGS. 9 to 11 will be described. As shown in FIG. 9, the preceding handrail according to the second embodiment is fixed between the vertical members T, T of a pair of building frames, and a pair of left and right vertical columns V3 fixed to the respective vertical members T, T. , V4, a pair of upper and lower horizontal columns 41, 42 bridged between the vertical columns V3, V4, a rod 43 connecting the horizontal columns 41, 42 at substantially the center thereof, and one vertical column V3 as a fixing means. And a pair of hook members H1 and H2 provided on the other vertical support V4, and a plate F for holding the vertical support T provided on the vertical support T, and a pair of hook members H1 and H2 provided on the other vertical support V4. Are composed of upper vertical columns 45L and 45R and lower vertical columns 46L and 46R, respectively. A pair of left and right diagonal members 48L whose base ends are rotatably supported in the lower horizontal column 42 in the vertical direction in FIG. 48R, the lower vertical columns 46L, 46R, and the tips of the diagonal members 48L, 48R. Locking means 47L, and 47R are provided for. That is, the preceding handrail according to the second embodiment has a configuration in which the preceding handrail according to the first embodiment is provided with diagonal members 48L and 48R and locking means 47L and 47R.
[0044]
Hereinafter, the second embodiment will be described, but the description of the same parts as those of the first embodiment will be repeated, and only the parts different from the first embodiment will be described in detail. . First, as for the diagonal member 48L, as shown in FIG. 10, the diagonal member 48L is composed of a rod-shaped main body 49L and a tip portion 50L, and the diagonal member 48R has the same configuration. Also, the diagonal member 48L is shown with the base end side of the main body 49L on the rear side of the lower horizontal column 42 in FIG. 9, and the diagonal member 48R is shown with the base end side of the main body 49R on the front side of the lower horizontal column 42 in FIG. 9 is rotatably supported in the vertical direction. That is, in the preceding handrail, as shown in FIG. 9, the diagonal members 48L and 48R can be folded as indicated by arrows a and b, respectively.
[0045]
As shown in FIG. 10, a substantially U-shaped hook bar 51L rotatably attached to the tip 50L of the oblique member 48L is provided on the tip side of the oblique member 48L. One end is provided with a stopper (not shown). Further, a substantially U-shaped hooking portion 52L is provided on a side portion of the lower vertical support 46L. The hooking bar 51L is hooked inside the hooking portion 52L, and the hooking bar 51L is indicated by an arrow c. If the hook bar 51L is made vertical in FIG. 10, the lower arm (not shown) of the hook bar 51L interferes with the lower end of the hook portion 52L and the diagonal member 48L can be rotated. Can be fixed to the lower vertical support 46L. At this time, the hook bar 51L is automatically maintained vertically in FIG. 10 by its own weight as described above, so that when the preceding handrail is in use, that is, when it is attached to the framework scaffold, the diagonal member 48L is moved downward. Dropping from the vertical support 46L is prevented. That is, the locking means 47L includes the hook bar 51L and the hook portion 52L. The other diagonal member 48R, the locking means 47R and the lower vertical column 46R have the same configuration as the one diagonal member 48L, the locking unit 47L and the lower vertical column 46L. Therefore, the second embodiment is superior to the first embodiment in terms of strength by providing the diagonal members 48L and 48R. Of course, other commonly used locking means may be used.
[0046]
Also in this embodiment, each diagonal member 48L, 48R is made to extend along the lower horizontal column 42 as shown in FIG. 11, and each upper vertical column 45L, 45R is connected to the lower side column. Since the vertical supports V3 and V4 can be brought into the most contracted state by being completely inserted into the vertical supports 46L and 46R, the preceding handrail can be made compact as in the first embodiment. When the leading handrail is attached to the vertical member T from the lower floor, the leading vertical portions 50L, 50R of the diagonal members 48L, 48R are held and pushed upward, so that the upper vertical columns are attached to the lower vertical columns 46L, 46R. 45L and 45R can be moved upward to assemble the preceding handrail in a used state. Since the diagonal members 48L and 48R are rotatably mounted on the lower horizontal support 42, there is no diagonal member and the lower diagonal member 48R and 48R are not rotatable. As compared with a preceding handrail which must be assembled using the horizontal support 42, the work of attaching the preceding handrail while the operator always raises both arms is further simplified.
[0047]
Then, similarly to the first embodiment, the number of parts is smaller than that of the conventional preceding handrail, so that the weight of the preceding handrail can be reduced, and the manufacturing cost can be reduced as compared with the conventional preceding handrail. Become. In addition, the folding method is simple, and the assembling at the time of attachment is simple, and the strength is advantageous. In addition, about the fixing means which fixes each vertical support | pillar to a vertical material, similarly to 1st Embodiment, you may provide the plate F and the holding | maintenance tool K or two holding | maintenance tools K in both vertical support | pillars, Further, similarly to the first embodiment, a fragile portion may be appropriately provided.
[0048]
Further, the preceding handrail according to the third embodiment shown in FIGS. 12 to 15 will be described. As shown in FIG. 12, the preceding handrail according to the third embodiment is fixed between a pair of vertical members T, T of a pair of building frames, and a pair of left and right vertical columns 67L fixed to the respective vertical members T, T. , 67R, a pair of upper and lower horizontal columns X1, X2 bridged between the vertical columns 67L, 67R, a rod 63 connecting the horizontal columns X1, X2 substantially at the center thereof, and one vertical column 67L as a fixing means. And a pair of hooking members H1 and H2 provided on the other vertical support 67R.
[0049]
The details will be described below. As shown in FIG. 12, each of the horizontal columns X1 and X2 includes a hollow right-side horizontal column 61R and 62R and a hollow left-side horizontal column 61L and 62L. In addition, the right lateral column 61R of the upper lateral column X1 is rotatably supported at one end on the base end side by a right vertical column 67R in FIG. 12 so as to be vertically rotatable in FIG. 12, and the left lateral column 61L is The base end, which is one end, is rotatably supported in the vertical column 67L on the left side in FIG. 12 so as to be freely rotatable in the vertical direction in FIG. 12, and the distal ends, which are the other ends of both horizontal columns 61L, 61R, are rods as shown in FIG. The shaft 63 is rotatably supported in a vertical direction in FIG. 12 via a shaft 71 and a shaft 72 pivotally connected to a connecting portion 65 provided at one end of the shaft 63.
[0050]
Further, the right lateral column 62R of the lower lateral column X2 is rotatably supported at its base end by a right vertical column 67R in FIG. 12 so as to be freely rotatable in the vertical direction in FIG. 12, and the left lateral column 62L is The end of the rod 63 is rotatably supported in the vertical direction in FIG. 12 on the left side in FIG. 12 so as to be freely rotatable in the vertical direction in FIG. Are rotatably supported in the vertical direction in FIG.
[0051]
In addition, a regulating member 64 that regulates relative movement between the right lateral column 61R and the left lateral column 61L is provided substantially at the center of the upper lateral column X1. As shown in FIG. 13, the restricting member 64 includes a hollow cylindrical slide portion 70 and a U-shaped cross section restricting portion 77, into which the left lateral column 61 L is inserted. At the same time, a hole 70a is formed in the lower part of the slide part 70 in FIG.
[0052]
As shown in FIGS. 13 and 14, springs 73 and 75 and locking members 74 and 76 are provided inside the left lateral support 61L. The springs 73 and 75 and the locking members 74 and 76 have the same configuration as in the first embodiment. In the same manner as in the first embodiment, the spring 73 and the locking member 74 and the spring 75 and the locking member 76 are combined and accommodated in the left lateral column 61L. The heads (not shown) of the locking members 74 and 76 are provided in the left lateral support column 61L so as to be urged and protruded by springs 73 and 75 respectively combined with the heads 61La and 61Lb. When the hole 70a of the slide portion 70 exactly overlaps the hole 61La or the hole 61Lb of the left lateral support 61L, the head (not shown) of the locking member 74 or the locking member 76 is moved by the springs 73 and 75, respectively. Since it is urged, it protrudes into the hole 70a, so that the regulating member 64 can be fixed at two places on the left lateral column 61L.
[0053]
The above-mentioned hole 61La is bored at a position where the regulating member 64 of the regulating member 64 is positioned under a state where the regulating portion 77 of the regulating member 64 contacts the upper portion of the right lateral support 61R in FIG. Is formed in such a position that the restricting member 77 of the restricting member 64 is positioned under such a state that the restricting member 77 of the restricting member 64 cannot contact the upper part of the right lateral column 61R in FIG. ing. Further, the connecting portion 65 has a U-shaped cross section that opens upward in FIG. 13, and the above-described right lateral column 61 R and left lateral column 61 L rotate only vertically upward in FIG. Is allowed. That is, when the movement of the regulating member 64 is regulated in a state where the hole 70a and the hole 61La are overlapped, the regulating portion 77 of the regulating member 64 inserted into the left lateral column 61L is moved to the right lateral column 61R in FIG. Since the left and right horizontal columns 61L and 61R are restricted from rotating downward in FIG. 13 by the connecting portion 65 while being in contact with the upper portion, the horizontal column X1 is fixed under a straight rod state. Then, since the lower horizontal support X2 is also connected by the rod 63, the lower horizontal support X2 is also fixed under a straight rod state. On the other hand, when the movement of the regulating member 64 is regulated in a state where the hole 70a and the hole 61Lb are overlapped with each other, the regulating portion 77 of the regulating member 64 inserted into the left lateral column 61L becomes the right lateral column 61R of FIG. Since the middle upper portion and the connecting portion 65 are fixed to the left horizontal support 61L under a state where they cannot contact the upper portion in FIG. 13, the left and right horizontal supports 61L and 61R rotate upward in FIG. Nothing is regulated. Then, rotation of the left and right horizontal columns 62L and 62R of the lower horizontal column X2 together with the left and right horizontal columns 61L and 61R with respect to the connecting portion 66 in FIG. 13 is not restricted at all. Therefore, since the respective parts are fixed by the restricting member 64 having such a simple structure having the hollow cylindrical slide part and the restricting part having a U-shaped cross section, the preceding handrail can be easily assembled and made compact. Further, since the regulating member 64 is provided by being inserted into the horizontal support, the regulating member 64 does not fall off from the leading handrail, and there is no danger of the regulating member 64 falling from a high place. Is improved, and at the same time, the restriction member 64 is prevented from being lost.
[0054]
As shown in FIG. 15, the leading handrail according to the third embodiment having the above-described configuration is configured such that the left and right horizontal columns 61R, 61L, 62R, and 62L are connected to the connecting portions 65 and 66, respectively, as shown in FIG. By turning it up, it is possible to fold it. That is, even in the third embodiment, the preceding handrail can be made compact. Further, since the number of parts is smaller than that of the conventional handrail, the weight of the preceding handrail can be reduced, and the manufacturing cost can be reduced as compared with the conventional handrail. In addition, the folding method is simple, and the assembling at the time of attachment is simple, and the strength is advantageous. In addition, about the fixing means which fixes each vertical support | pillar to a vertical material, similarly to 1st Embodiment, you may provide the plate F and the holding | maintenance tool K or two holding | maintenance tools K in both vertical support | pillars, Further, similarly to the first embodiment, a fragile portion may be appropriately provided.
[0055]
Next, the preceding handrail according to the fourth embodiment shown in FIGS. 16 to 18 will be described. As shown in FIG. 16, the preceding handrail according to the fourth embodiment is fixed between a pair of vertical members T, T of a pair of building frames, and a pair of left and right vertical columns 86L fixed to the respective vertical members T, T. , 86R, a pair of upper and lower horizontal columns X3, X4 bridged between the vertical columns 86L, 86R, a rod 83 connecting the horizontal columns X3, X4 at substantially the center thereof, and a left vertical column 86L and the lower side. A left diagonal member 87L bridged between the horizontal columns X4, a right diagonal member 87R bridged between the right vertical column 86R and the lower horizontal column X4, and one vertical column 86L as a fixing means are provided. From the plate F holding the vertical member T, the holding member K holding the vertical member T, and the plate F holding the vertical member T provided on the other vertical support 86R and the holding member K holding the vertical member T. It is configured.
[0056]
The details will be described below. As shown in FIG. 16, each of the horizontal columns X3 and X4 includes a hollow right side horizontal column 81R and 82R and a hollow left side horizontal column 81L and 82L, respectively. In addition, the right lateral column 81R of the upper lateral column X3 is rotatably supported at one end on the base end side by a vertical column 86R on the right side in FIG. 16 so as to be vertically rotatable in FIG. 16, and the left lateral column 81L is A base end, which is one end, is rotatably supported by a vertical column 86L on the left side in FIG. 16 so as to be freely rotatable in the vertical direction in FIG. 16, and a distal end, which is the other end of both horizontal columns 81L, 81R, is provided at one end of a rod 83. The shaft is rotatably supported in the vertical direction in FIG. 16 via a shaft 96 and a shaft 97 pivotally attached to the portion 84.
[0057]
Further, the right lateral column 82R of the lower lateral column X4 is rotatably supported at its base end by a right vertical column 86R on the right side in FIG. 16 so as to be vertically rotatable in FIG. 16, and the left lateral column 82L is The end of the rod 83 is rotatably supported in the vertical direction in FIG. 16 on the left side in FIG. 16 so as to be freely rotatable in the vertical direction in FIG. 16 are rotatably supported in the vertical direction in FIG.
[0058]
The left diagonal member 87L is slidably and rotatably mounted on the lower left lateral column 82L via a left slide member 88L at the distal end side, and is rotatably supported at the base end side on the left vertical column 86L. I have. On the other hand, the right diagonal member 87R is also slidably and rotatably mounted on the lower right lateral support 82R via a right slide member 88R at the distal end side, and rotatably supported on the base end side by the right vertical support 86R. I have.
[0059]
As shown in FIG. 17, the left slide member 88L has a cylindrical main body 89 having a C-shaped cross section and an upper opening in FIG. 17, into which the left lateral support 82L is inserted, and a main body in FIG. 89, a pair of pivot portions 90, 90 standing upright from the open end above. The tip of the left diagonal member 87L is inserted into the pivot portions 90, 90, and the pivot portions 90, 90 and the left side report are collected. The slide member 88L and the left diagonal member 87L are rotatably connected by a shaft 91 that penetrates the end of the 87L. In addition, a hole 89a is bored below the main body 89 of the slide member 88L in FIG. On the other hand, the right slide member 88R is configured similarly to the left slide member 88L described above, and like the left diagonal member 87L, the right diagonal member 87R is slidably and rotatable with respect to the right horizontal support 82R. Are linked.
[0060]
Further, since the lower left lateral support 82L is inserted into the main body 89 of the slide member 88L, the left diagonal member 88L is slidably and rotatably connected to the left lateral support 82L. It will be. Further, springs 93 and 95 and locking members 92 and 94 are provided in the left support column 82L as shown in FIG. The springs 93 and 95 and the locking members 92 and 94 have the same configuration as in the first embodiment.
[0061]
Then, as in the first embodiment, the spring 93 and the locking member 92 and the spring 95 and the locking member 94 are respectively combined and accommodated in the lower left lateral column 82L, but provided on the left lateral column 82L. The heads (not shown) of the locking members 92 and 94 are respectively provided in the left lateral columns 82L such that the heads (not shown) of the locking members 92 and 94 are respectively urged by the springs 93 and 95 and protruded from the holes 82La and 82Lb. Further, when the hole 89a of the slide member 88L exactly overlaps the hole 82La or the hole 82Lb of the left lateral support 82L, the head (not shown) of the locking member 92 or the locking member 94 is moved by the springs 93 and 95, respectively. The slide member 88L is urged and projects into the hole 89a, so that the slide member 88L can be fixed at two places on the left lateral column 82L. Similarly, a locking member (not shown) and a spring (not shown) are accommodated in the other lower right lateral column 82R, and the slide member 88R is also fixed at two places on the right lateral column 82R. can do.
[0062]
The above-described hole 82La can be fixed in a state where the slide member 88L is restricted from moving with respect to the lower left lateral column 82L at this position, and the left lateral column 82L and the left vertical column 86L are substantially orthogonal to each other. Drilled in place. Here, the length of the rod 83 is such that the length of the distance between the connecting portion 84 and the connecting portion 85, which is attached to both ends of the rod 83, is equal to the mounting position of the upper horizontal support X3 of the left vertical support 86L. Is set to be the same as the distance between the horizontal support X4 and the mounting position of the horizontal support X4. Then, the upper left lateral column 81L is also connected by the rod 83 and the connecting portions 84 and 85, and the movement of the slide member 88L is restricted with respect to the lower left lateral column 82L. It will be fixed in a state orthogonal to the left vertical support 86L. On the other hand, since the right slide member 88R is also set in the same manner, as shown in FIG. 16, in a state where the preceding handrail is used, that is, in a state where it can be fixed between the vertical members T, T, each member ( The left and right vertical columns 86L and 86R, the upper and lower horizontal columns X3 and X4, the rod 83, and the left and right diagonal members 87L and 87R) can be restricted from moving relative to each other.
[0063]
On the other hand, when the movement of the slide member 88L is regulated in a state where the hole 89a and the hole 82Lb are overlapped, the movement of the slide member 88L is regulated at this position with respect to the lower left lateral column 82L. As shown in FIG. 18, the left lateral support 82L and the left vertical support 86L are formed at positions where they can be fixed in a folded state. Then, the upper left lateral column 81L is also connected by the rod 83 and the connecting portions 84 and 85, and the movement of the slide member 88L is restricted with respect to the lower left lateral column 82L. It will be fixed to the left vertical support 86L in a folded state.
[0064]
On the other hand, since the right slide member 88R is also set in the same manner, as shown in FIG. 18, the preceding handrail is optimally carried and stored, that is, in a state where the preceding handrail is compactly folded. Each member (the left and right vertical columns 86L and 86R, the upper and lower horizontal columns X3 and X4, the rod 83, and the left and right diagonal members 87L and 87R) can be restricted from moving relative to each other. When the left diagonal member 87L is to be moved with respect to the lower left lateral column 82L, the heads (not shown) of the locking members 92 and 94 are pushed into the left lateral column 82L, and the left and right columns are moved. It can be freely moved by releasing the engagement with the hole 89a, and the same applies to the right diagonal member 87R.
[0065]
By the way, the preceding handrail according to the fourth embodiment configured as described above can be folded as shown in FIG. That is, even in the fourth embodiment, the preceding handrail can be made compact. Further, since the number of parts is smaller than that of the conventional handrail, the weight of the preceding handrail can be reduced, and the manufacturing cost can be reduced as compared with the conventional handrail. In addition, the folding method is simple, and the assembling at the time of attachment is simple, and the strength is advantageous. As for the fixing means for fixing each vertical support to the vertical member, as in the first embodiment, a plate F and a holding member K are provided on one vertical support, and hook members H1, H2 are provided on the other vertical support. May be provided, or two holding tools K may be provided on both the vertical supports, and a weak portion may be provided as appropriate similarly to the first embodiment.
[0066]
Next, the preceding handrail according to the fifth embodiment shown in FIGS. 19 to 21 will be described. As shown in FIG. 19, the preceding handrail according to the fifth embodiment is fixed between a pair of vertical members T, T of a pair of building frames, and a pair of left and right vertical columns V5 fixed to the respective vertical members T, T. , V6, a pair of upper and lower horizontal columns 101, 102 bridged between the vertical columns V5, V6, a rod 103 bridged between the horizontal columns 101, 102, and one vertical column V5 as fixing means. A plate F for holding the provided vertical member T, a holding member K for holding the vertical member T, a plate F for holding the vertical member T provided on the other vertical support V6, and a holding member K for holding the vertical member T. It is composed of
[0067]
The details will be described below. As shown in FIG. 19, each of the vertical columns V5 and V6 is composed of a main body 105L and 105R, respectively, and distal ends 107L and 107R rotatably supported by the main bodies 105L and 105R. Each of the lower vertical columns 115L, 115R and the hollow upper vertical columns 108L, 108R.
[0068]
More specifically, in the left vertical column V5 on the left side in FIG. 19, the distal end portion 107L is rotatably connected to the distal end of the main body 105L via a shaft 116L. As shown in FIG. Is slightly thinner than the lower part, and the outer shape of the tip 107L is slightly thinner than the main body 105L, like the upper end of the main body 105L.
[0069]
Further, a hole 113L is formed in the side of the tip 107L from the left side in FIG. 20, and the hole 113L is urged by the coil spring 112L and the coil spring 112L in a direction protruding from the hole 113L. The sphere 111L is inserted. The tip 107L is slidably inserted into the upper vertical support 108L.
[0070]
Also, two holes 109L and 110L are formed in the upper vertical support 108L at the upper and lower sides in FIG. 20. When the holes 109L and 110L and the above-described distal end 107L holes overlap, the ball 111L is formed. It protrudes into the hole 109L or the hole 110L. Here, the diameter of each of the holes 109L and 110L is slightly smaller than that of the above-mentioned sphere 111L, so that the sphere 111L is prevented from falling off from the upper vertical column 108L and the tip 107L.
[0071]
Furthermore, as described above, the distal end 107L and the upper end of the main body 105L are slightly thinner than the lower part of the main body 105L, and the inner shape of the upper vertical support 108L is substantially the same as the distal end 107L and the upper end of the main body 105L. It has substantially the same shape as the outer shape, and the upper vertical support 108L can cover the distal end 107L and the upper end of the main body 105L, and has a step 105La formed at the lower end of the main body 105L and at the upper end in FIG. Further, the upper vertical support 108L is restricted from moving below the main body 105L. Also, the hole 109L and the hole 113L overlap with each other in a state where the step portion 105La and the upper vertical column 108L are in contact with each other. Therefore, the upper vertical column 108L and the lower vertical column 105L are fixed in the above state. In addition, since the tip 107L, the shaft 116L, and the upper end of the main body 105L are accommodated in the upper vertical support 108L, the left vertical support V5 can be maintained in a straight rod shape.
[0072]
When the holes 110L and the holes 113L overlap each other, the upper vertical support 108L and the lower vertical support 115L are fixed so that the lower end of the upper vertical support 108L is located above the shaft 116L in FIG. In this case, the upper vertical support 108L can be folded by rotating it in the vertical direction in FIG. 20 with respect to the main body 105L. On the other hand, the right vertical column V6 also has the same configuration as the left vertical column V5, and the right vertical column V6 can also be folded and straight.
[0073]
Further, one end of the upper horizontal column 101 is connected to the left upper vertical column 108L, and the other end of the upper horizontal column 101 is connected to the right upper vertical column 108R. The lower horizontal support 115L is connected to the lower horizontal support 115L via a slide member 106L rotatably connected to one end of the lower vertical support 115L, and the lower horizontal support 115R is connected to the lower horizontal support 115R. 102 is connected via a slide member 106R rotatably connected to the other end. The slide members 106L and 106R have the same configuration as the slide members 88L and 88R of the fourth embodiment, and can slide and move on the left and right vertical supports V5 and V6.
[0074]
A rod 103 that connects the upper and lower horizontal struts 101 and 102 is connected to each other. The rod 103 has its base end rotatably supported at the approximate center of the upper horizontal support 101, and has its distal end slidably and rotatably mounted on the lower horizontal support 102 via a slide member 104. The slide member 104 has the same configuration as the slide members 88L and 88R of the above-described fourth embodiment, and can slide and move on the lower horizontal support 102.
[0075]
Although not shown, in order to fix the slide members 106L, 106R, and 104, lower left and right vertical supports 115L and 115R to which the slide members 106L, 106R, and 104 are mounted, and lower horizontal members. In the support column 102, a regulating member formed by a combination of a spring and a locking member similar to that of the above-described first embodiment is accommodated, and each of the slide members 106L, 106R, 104 is connected to the left and right lower vertical columns 115L. , 115R and the lower horizontal support 102.
[0076]
Incidentally, in the present embodiment, as shown in FIG. 19, the restricting member is provided in a state where the preceding handrail is used, that is, in a state where the restricting member can be fixed between the vertical members T, T (right and left vertical members). The struts V5 and V6, the upper and lower lateral struts 101 and 102, and the rod 103) are provided at positions where they can regulate relative movement with respect to each member.
[0077]
Further, by sliding the slide 104, the rod 103 is rotated left or right in FIG. 19 so as to follow the upper horizontal support 101, and at the same time, the slide member 106L and the slide 106R are respectively connected to the left and right vertical support V5. When the rod 103 is slid upward on FIG. 19 and the rod 103 is moved along the lower horizontal support 102, the lower vertical support 115R of the right vertical support V6 is folded down near the lower end of the slide member 106R. The lower vertical column 115L of the left vertical column V5 can be folded along the lower vertical column 115R in a state where the lower column 115R of the right side is folded. Each part (upper vertical columns 108L, 108R, respective distal ends 107L, 107R, and upper ends of the main bodies 105L, 105R) so that they can be folded. It has been set length.
[0078]
In addition, by sliding the slide 104, the rod 103 is rotated left or right in FIG. 19 so as to be along the upper horizontal support 101, and the rod 103 is also placed in the lower horizontal support 102. A regulating member formed by a combination of a spring and a locking member similar to that of the first embodiment is accommodated, and the slide member 104 can be fixed on the lower lateral support 102.
[0079]
Then, as shown in FIG. 21, the preceding handrail can be folded compactly. That is, even in the fifth embodiment, the preceding handrail can be made compact. Further, since the number of parts is smaller than that of the conventional handrail, the weight of the preceding handrail can be reduced, and the manufacturing cost can be reduced as compared with the conventional handrail. In addition, the folding method is simple, and the assembling at the time of attachment is simple, and the strength is advantageous. As for the fixing means for fixing each vertical support to the vertical member, as in the first embodiment, a plate F and a holding member K are provided on one vertical support, and hook members H1, H2 are provided on the other vertical support. May be provided, or two holding tools K may be provided on both the vertical supports, and a weak portion may be provided as appropriate similarly to the first embodiment.
[0080]
Next, the preceding handrail according to the sixth embodiment shown in FIGS. 22 to 23 will be described. As shown in FIG. 22, the preceding handrail according to the sixth embodiment is fixed between a pair of vertical members T, T of a pair of building frames, and a pair of right and left vertical columns V7 fixed to the respective vertical members T, T. , V8, a pair of upper and lower horizontal columns 121, 122 bridged between the vertical columns V7, V8, a rod 123 connecting the horizontal columns 121, 122 at substantially the center thereof, and one vertical column V7 serving as fixing means. A plate F for holding the vertical member T and a holding member K for holding the vertical member T, and a plate F for holding the vertical member T provided on the other vertical support V8 and a holding member K for holding the vertical member T It is composed of
[0081]
Hereinafter, the details will be described. As shown in FIG. 22, each of the vertical columns V7 and V8 includes upper vertical columns 124L and 124R and lower vertical columns 125L and 125R, respectively. At the lower end in FIG. 22 of the left upper vertical support 124L, a substantially U-shaped bracket 128L that opens rightward in FIG. 22 is provided, and on the lower upper support 125L in the lower left vertical support 125L in FIG. A convex bracket 131L having a hole 132L is provided, and the bracket 128L and the bracket 131L are connected by a shaft 127L as shown in FIG. 23, and the upper vertical support 124L is connected to the lower vertical support 125L. It can be rotated vertically to the right in FIG.
[0082]
Further, as in the first embodiment, a regulating member formed by a combination of a spring 130L and a locking member 126L is accommodated above the lower vertical support 125L, and at the same time, on the side thereof. A hole 125La is formed, and the head of the locking member 126L is urged by a spring 130L to project into the hole 125La. Further, a hole 128La is also formed in the front side in FIG. 22 of the bracket 128L provided at the lower end of the above-mentioned upper vertical support 124L, and the hole 128La of the bracket 128L and the hole 125La of the lower vertical support 125L are just formed. Are overlapped, the head of the locking member 126L protrudes into the hole 128La, and the upper vertical support 124L and the lower vertical support 125L can be fixed in a straight bar shape. On the other hand, the right vertical column V8 has the same configuration as the left vertical column V7, and the upper vertical column 124R and the lower vertical column 125R can be fixed in a straight bar shape.
[0083]
Therefore, also in the sixth embodiment, as shown in FIG. 22, the lower vertical columns 125L and 125R can be rotated with respect to the upper vertical columns 124L and 124R in the directions of arrows c and d, respectively. Thus, the preceding handrail can be compactly folded. That is, even in the sixth embodiment, the preceding handrail can be made compact. Further, since the number of parts is smaller than that of the conventional handrail, the weight of the preceding handrail can be reduced, and the manufacturing cost can be reduced as compared with the conventional handrail. In addition, the folding method is simple, and the assembling at the time of attachment is simple, and the strength is advantageous. As for the fixing means for fixing each vertical support to the vertical member, as in the first embodiment, a plate F and a holding member K are provided on one vertical support, and hook members H1, H2 are provided on the other vertical support. May be provided, or two holding tools K may be provided on both the vertical supports, and a weak portion may be provided as appropriate similarly to the first embodiment.
[0084]
Further, the preceding handrail in the seventh embodiment shown in FIGS. 24 and 25 will be described. As shown in FIG. 24, the preceding handrail in the seventh embodiment is fixed between a pair of vertical members T, T of a pair of building frames, and a pair of left and right vertical columns V9 fixed to the respective vertical members T, T. , V10, a pair of upper and lower horizontal columns X5, X6 bridged between the vertical columns V9, V10, a plate F holding the vertical column T provided on one of the vertical columns V9 serving as fixing means, and a vertical column T. It has a holding tool K for holding, a plate F holding the vertical member T provided on the other vertical support V10, and a holding tool K for holding the vertical member T, and each of the vertical supports V9 and V10 is an upper vertical support, respectively. 143L, 143R and lower vertical columns 145L, 145R, and the upper horizontal column X5 and lower vertical column X6 are each formed of left horizontal columns 141L, 142L and right vertical columns 141R, 142R. .
[0085]
Hereinafter, the details will be described. As shown in FIG. 24, a substantially U-shape opening at the right side in FIG. 24 similar to the sixth embodiment is provided at the lower end in FIG. A bracket 144L is provided, and a convex bracket (not shown) having a hole (not shown) similar to that of the sixth embodiment is provided at the upper end in FIG. 24 of the left lower vertical support 145L. The bracket 144L and a bracket (not shown) are connected by a shaft 146L, and the upper vertical support 143L can rotate vertically to the right in FIG. 24 with respect to the lower vertical support 145L. As in the sixth embodiment, a regulating member (not shown) formed by a combination of a spring (not shown) and a locking member (not shown) is housed above the side vertical support 145L. The upper vertical support 143L and the lower vertical support 1 And a 5L so that the fixable to straight rod. On the other hand, the right vertical column V10 also has the same configuration as the left vertical column V9, and the upper vertical column 143R and the lower vertical column 145R can be fixed in a straight bar shape.
[0086]
The upper left lateral column 141L as the outer tube is hollow, and the right lateral column 141R as the inner rod is slidably inserted into the left lateral column 141 and also engages with a spring (not shown). A regulating member (not shown) in combination with a stop member (not shown) is accommodated in the right lateral support 141R near the left end in FIG. A hole 141La and a hole 141Lb are formed in the left lateral support 141L, and the holes 141La and 141Lb and the above-described regulating member (not shown) are used similarly to the first embodiment. The left lateral strut 141L and the right lateral strut 141R can be maintained and fixed in the most extended state and the most contracted state. On the other hand, the lower horizontal support X6 has the same configuration as the above-described horizontal support X5, and the left horizontal support 142L and the right horizontal support 142R can be maintained and fixed in the most extended state and the most contracted state. It has become. Note that the outer tube may be used as the right lateral support, and the inner rod may be used as the left lateral support.
[0087]
As described above, in the present embodiment, the portions other than the upper and lower horizontal columns X5 and X6 have substantially the same configuration as the sixth embodiment, and the left and right vertical columns V9 and V10 are shown in FIG. As shown in FIG. 25, it is possible to rotate and fold in the directions of arrows e and f. However, what is slightly different from the sixth embodiment is that, as described above, the horizontal columns X5 and X6 are placed in the left horizontal columns 141L and 142L, respectively, and the right horizontal columns 141L and 141R are placed in the most contracted state. When the left and right lower vertical columns 145L and 145R are folded as in the sixth embodiment, the left and right lower vertical columns 145L and 145R interfere with each other. 25, the fulcrum of the folding of the upper right column 143R and the lower vertical column 145R on the right side is slightly shifted downward in FIG. 25 from the fulcrum of the folding of the upper column 143L on the left side and the lower column 145L. By doing so, both lower vertical columns 145L, 145R are prevented from interfering with each other in a folded state.
[0088]
Therefore, also in the seventh embodiment, as shown in FIG. 25, the lower vertical columns 145L and 145R can be rotated with respect to the upper vertical columns 143L and 143R in the directions of arrows e and f, respectively. Furthermore, the leading handrail can be compactly folded by contracting the upper and lower horizontal columns X5 and X6 the most. That is, even in the seventh embodiment, the leading handrail can be made compact, and in this case, it can be folded more compactly than the sixth embodiment. Further, since the number of parts is smaller than that of the conventional handrail, the weight of the preceding handrail can be reduced, and the manufacturing cost can be reduced as compared with the conventional handrail. In addition, the folding method is simple, and the assembling at the time of attachment is simple, and the strength is advantageous. As for the fixing means for fixing each vertical support to the vertical member, as in the first embodiment, a plate F and a holding member K are provided on one vertical support, and hook members H1, H2 are provided on the other vertical support. May be provided, or two holding tools K may be provided on both the vertical supports, and a weak portion may be provided as appropriate similarly to the first embodiment.
[0089]
Further, the preceding handrail in the eighth embodiment shown in FIGS. 26 to 29 will be described. As shown in FIG. 26, the preceding handrail according to the eighth embodiment is fixed between a pair of vertical members T, T of a pair of building frames, and a pair of left and right vertical columns 155L fixed to the respective vertical members T, T. , 155R, a pair of upper and lower horizontal columns X7, X8 bridged between the vertical columns 155L, 155R, and a plate F and a vertical column T holding the vertical column T provided on one of the vertical columns 155L as fixing means. It comprises a holding tool K for holding, a plate F for holding the vertical member T provided on the other vertical support 155R, and a holding tool K for holding the vertical member T.
[0090]
Hereinafter, the details will be described. As shown in FIGS. 26 and 29, each of the horizontal columns X7 and X8 includes a hollow right-side horizontal column 151R and 152R, a hollow left-side horizontal column 151L and 151L, and a connecting portion 158 and 166, respectively. It is configured. The right lateral support 151R of the upper lateral support X7 has its base end coupled to the right vertical support 155R in FIG. 26, and the left lateral support 151L has its proximal end connected to the left vertical support in FIG. 26. 155L, and the distal ends of the two lateral columns 151L and 151R are pivotally connected to the connecting portion 158 via the shafts 163 and 164 so as to be rotatable in the horizontal direction in FIG. 26, as shown in FIG. .
[0091]
Further, the right lateral support 152R of the lower lateral support X8 has its base end coupled to the right vertical support 155R in FIG. 26, and the left lateral support 152L has its proximal end connected to the left vertical in FIG. 26. Similarly to the above-described upper horizontal column X7, the distal ends of both the horizontal columns 152L and 152R are rotatably supported in the horizontal direction in FIG.
[0092]
In addition, a regulating member 157 that regulates the relative movement of the right lateral column 151R and the left lateral column 151L is provided substantially at the center of the upper lateral column X7. As shown in FIG. 27, the regulating member 157 has a hollow cylindrical shape. The right lateral column 151R is inserted into the regulating member 157, and a hole 157a is formed above the regulating member 157 in FIG. Is established.
[0093]
Also, a spring 160 and a locking member 159 are provided inside the right horizontal support 151R as shown in FIG. 27, and a spring (not shown) is also provided inside the left horizontal support 151L as shown in FIG. And a locking member 162 are provided. Springs 160 (not shown) and locking members 159, 162 have the same configuration as in the first embodiment.
[0094]
Then, similarly to the first embodiment, the spring 160 and the locking member 159, and the spring (not shown) and the locking member 162 are respectively combined and accommodated in the right lateral support 151R and the left lateral support 151L. The head (not shown) of the locking member 159 is provided in the right side horizontal support 151R so as to be urged and protruded by a spring 160 combined with a hole 151Ra provided in the right side horizontal support 151R, while the left side horizontal support 151L is provided. Are provided in the left lateral support 151L so as to be projected by being urged by a spring (not shown) in which a head (not shown) of the locking member 162 is combined with a hole (not shown) provided in the hole.
[0095]
When the hole 157a of the restricting member 157 exactly overlaps with the hole 151Ra of the right lateral column 151R or the hole (not shown) of the left lateral column 151L, the head (not shown) or the retaining of the retaining member 159 is performed. Since the heads (not shown) of the members 162 are urged by the springs 160 and (not shown), they protrude into the holes 157a, so that the restricting members 157 are placed on the right side horizontal columns 151R. Alternatively, it can be fixed at two places on the left lateral support 151L.
[0096]
The inner shape of the regulating member 157 is set to be substantially the same as the outer shape of the left and right lateral columns 151R and 151L, and the regulating member 157 can slide on the left and right lateral columns 151R and 151L. ing.
[0097]
The hole (not shown) of the left lateral support 151L is provided between the right end of the left lateral support 151L and the right lateral support 151R of the left horizontal support 151L when the restricting member 157 is fixed to the left horizontal support 151L. 27, the hole 151Ra of the right lateral support 151R is formed when the regulating member 157 is fixed to the right lateral support 151R. It is drilled at a position that does not cover the support 151L and the connecting portion 158.
[0098]
The outer shape of the connecting portion 158 is set to be equal to or smaller than that of the left and right lateral columns 151R and 151L so that the regulating member 157 can slide.
[0099]
That is, when the movement of the regulating member 157 is regulated in a state where the hole 157 and the hole (not shown) of the left lateral column 151L are overlapped, the left end and the right side of the left lateral column 151L in the regulating member 157 in FIG. Since the right end in FIG. 27 of the horizontal support 151R is inserted and the left horizontal support 151L is restricted from rotating with respect to the right horizontal support 151R, the horizontal support X7 is fixed under a straight rod state. Will be done.
[0100]
On the other hand, when the movement of the regulating member 157 is regulated in a state where the hole 157a and the hole 151Ra overlap, the regulating member 157 is only inserted into the right lateral column 151R, and the left lateral column 151L and the connecting portion 158 are connected. 28 cannot be restricted, the left and right horizontal columns 151L and 151R can rotate relative to the connecting portion 158 in the directions of arrows h and g in FIG.
[0101]
On the other hand, the lower horizontal support X8 also has the same configuration as the above-described upper horizontal support X7. By sliding the regulating member 154, the lower horizontal support X8 can be maintained and fixed below the straight rod-shaped body, and both the left and right horizontal supports can be fixed. The posts 152L and 152R can rotate with respect to the connecting portion 166.
[0102]
By the way, as shown in FIG. 29, the leading handrail according to the eighth embodiment configured as described above rotates each of the left and right lateral columns 151R, 151L, 152R, and 152L to the rear side in FIG. It is possible to fold. That is, even in the eighth embodiment, the preceding handrail can be made compact. Further, since the number of parts is smaller than that of the conventional handrail, the weight of the preceding handrail can be reduced, and the manufacturing cost can be reduced as compared with the conventional handrail. In addition, the folding method is simple, and the assembling at the time of attachment is simple, and the strength is advantageous. As for the fixing means for fixing each vertical support to the vertical member, as in the first embodiment, a plate F and a holding member K are provided on one vertical support, and hook members H1, H2 are provided on the other vertical support. May be provided, or two holding tools K may be provided on both the vertical supports, and a weak portion may be provided as appropriate similarly to the first embodiment.
[0103]
Further, the preceding handrail in the ninth embodiment shown in FIGS. 30 and 31 will be described. As shown in FIG. 30, the preceding handrail according to the ninth embodiment is fixed between a pair of vertical members T, T of a pair of building frames, and a pair of left and right vertical columns 174L fixed to the respective vertical members T, T. , 174R, a pair of upper and lower horizontal columns 171 and 172 bridged between the vertical columns 174L and 174R, a rod 173 for connecting the horizontal columns 171 and 172 at substantially the center thereof, and one vertical column 174L as a fixing means. The plate F holding the vertical member T provided on the other side, the holding member K holding the vertical member T, and the plate F holding the vertical member T provided on the other vertical support 174R and the holding member K holding the vertical member T are provided. It is composed of
[0104]
The details will be described below. As shown in FIG. 30, both ends of each of the horizontal columns 171 and 172 are supported by left and right vertical columns 174L and 174R so as to be vertically rotatable in FIG. Are rotatably supported by both ends of the rod 173.
[0105]
By the way, as shown in FIG. 31, the preceding handrail in the ninth embodiment configured as described above can be folded so that the entire preceding handrail is tilted in the horizontal direction in FIG. Therefore, even in the ninth embodiment, the preceding handrail can be made compact. Further, since the number of parts is smaller than that of the conventional handrail, the weight of the preceding handrail can be reduced, and the manufacturing cost can be reduced as compared with the conventional handrail. In addition, the folding method is simple, and the assembling at the time of attachment is simple, and the strength is advantageous. In addition, as for the fixing means for fixing each vertical support to the vertical member, one vertical support may be provided with a plate F and a holding device K, and the other vertical support may be provided with hook members H1 and H2. Two tools K may be provided on both the vertical supports, and a weak portion may be provided as appropriate similarly to the first embodiment.
[0106]
The preceding handrail in the tenth embodiment shown in FIGS. 32 to 34 is fixed between the vertical members T, T of a pair of building frames as shown in FIG. 32, and is fixed to each vertical member T, T. A pair of left and right vertical columns V11 and V12, a pair of upper and lower horizontal columns 181 and 182 bridged between the vertical columns V11 and V12, a rod 183 bridged between the horizontal columns 181 and 182, and a lower portion. A pair of left and right diagonal members 190L and 190R whose base ends are rotatably supported by the lateral horizontal column 182, locking means 192L for locking one lower vertical column 186L and one diagonal member 190L, A locking means 192R for locking the other lower vertical column 186R and the other diagonal member 190R, and a plate F1 holding the vertical column T provided on one of the vertical columns V11 as a fixing unit and the vertical column T are sandwiched. And the one provided on the other vertical support V12. And a hooking member H1, H3 Prefecture of.
[0107]
The details will be described below. As shown in FIG. 32, each of the vertical columns V11 and V12 includes a main body 185L and 185R, and distal ends 184L and 184R rotatably supported by the main bodies 185L and 185R. Each of the upper vertical supports 205L and 205R and a hollow lower vertical support 186L and 186R.
[0108]
More specifically, in the left vertical column V11 on the left side in FIG. 32, the distal end portion 184L is rotatably supported at the distal end of the main body 185L, and the lower side portion of the main body 185L is the first embodiment. A restricting member J composed of a spring (not shown) and a locking member (not shown) is provided. The main body 185L is slidably inserted into the lower vertical support 186L.
[0109]
Further, a hole (not shown) with which a locking member (not shown) of the regulating member J is engaged is provided on an upper side portion in FIG. 32 of the lower vertical support 186L, and this hole (not shown) is provided. ) Is engaged with the locking member (not shown) of the regulating member J, the movement of the main body 185L of the upper vertical support 205L with respect to the lower vertical support 186L is restricted. The configuration described above is the same for the other right vertical column V12. Further, the lower vertical support 186L of the left vertical support V11 is provided with a plate F1 for holding the vertical material T and a holding device K for holding the same vertical material T as in the first embodiment. On the lower vertical support 186R of the right vertical support V12, a first engaging portion H3 which engages with the hook portion H3 which is engaged with the plate F1 of the adjacent handrail which will be adjacent and which engages with the holding member K of the adjacent handrail which will be adjacent. A hook portion H1 similar to that of the embodiment is provided.
[0110]
The plate F1 basically includes a plate body 20 and a notch 21 provided from the distal end side to the base end side of the plate body 20, similarly to the plate F of the first embodiment shown in FIG. 32, a holding hole 22 provided at an intermediate portion of the notch 21 for holding the vertical member T, and a hole 23 provided in the plate body 20 into which a hook member H3 described later is inserted. As described above, the rising portion 201 is provided at the upper end of the plate F in FIG. 6, and the substantially U-shaped hook bar 200 is rotatably provided on the rising portion 201. Further, one end of the hook bar 200 is provided with a stopper (not shown) so as not to fall off from the rising portion 201. On the other hand, as shown in FIG. 34, the hooking member H3 includes a base end 206 fixed to the lower vertical support 186R of the right vertical support V12, and an inclined portion extending from the lower end of the base end 206 in FIG. 207, an insertion portion 208 which is suspended from the inclined portion 207 and inserted into the hole 23 of the plate F1, and a horizontal portion 209 extending from the upper end of the base end portion 206 in FIG. 34, the hook 200 of the plate F1 is hooked on the horizontal portion 209 of the hook H3, so that the hook H3 is released from the plate F1. It can be prevented from getting out. At this time, the hook bar 200 is automatically held by its own weight in a state of being hooked on the horizontal portion 209 of the hook portion H3 as shown in FIG. 34, so that the preceding handrail is in use, that is, attached to the framework scaffold. In this case, it is possible to prevent the hook portion H3 from coming out of the plate F1.
[0111]
Further, one end of an upper horizontal support 181 is connected to the upper end of the distal end 184L of the left upper vertical support 205L, and the other end of the upper horizontal support 181 is connected to the upper end of the distal end 184R of the right upper vertical support 205R. ing. One end of a lower horizontal column 182 is slidably mounted on the main body 185L of the left upper vertical column 205L, and the other end of the lower horizontal column 182 is mounted on the main body 185R of the right upper vertical column 205R. Is slidably mounted. Therefore, the lower horizontal support 182 can slide and move on the left and right vertical supports V11 and V12.
[0112]
A rod 183 for connecting the upper and lower horizontal columns 181 and 182 is connected to each other. The rod 183 has its proximal end rotatably supported at the approximate center of the lower horizontal support 182, and its distal end is slidably and rotatably mounted on the upper horizontal support 181 via a slide member 187. The slide member 187 is configured similarly to the slide members 88L and 88R of the above-described fourth embodiment, and can slide and move on the upper horizontal support 181.
[0113]
Although not shown, in order to fix the slide member 187, a combination of a spring and a locking member similar to that of the above-described first embodiment is provided in an upper horizontal support 181 to which the slide member 187 is attached. , The slide member 187 may be fixed on the upper lateral support 181.
[0114]
Further, the diagonal member 190L is composed of a rod-shaped main body 191L and a substantially U-shaped hook bar 193L rotatably attached to the tip side of the rod-shaped main body, and the diagonal member 190R has the same configuration. . The diagonal 190L has a base end side of the main body 191L on the rear side of the lower horizontal column 182 in FIG. 32, and the diagonal 190R has a base end of the main body 191LR on a front side of the lower horizontal column 182 in FIG. The shaft 32 is rotatably supported in the vertical direction. That is, in the preceding handrail, as shown in FIG. 32, the diagonal members 190L and 190R can be folded as shown by arrows p and r, respectively.
[0115]
The hook bar 193L provided on the tip end side of the diagonal member 190L is provided with a stopper (not shown) for preventing the hook bar 193L from falling off from the main body 191L. Further, a substantially U-shaped hook 194L is provided on the side of the lower vertical pillar 186L of the right vertical pillar V11, and the above-described hook bar 193L can be hooked inside the hook 194L. When this hook bar 193L is made vertical in FIG. 34, the lower arm (not shown) of the hook bar 193L interferes with the lower end of the hook portion 194L and the diagonal member 190L is attached to the lower vertical support 186L. It is possible to fix. At this time, the hook bar 193L is automatically maintained vertically as shown in FIG. 34 by its own weight, so that when the preceding handrail is in use, that is, when it is attached to the framed scaffold, the diagonal member 190L moves downward. It is prevented from dropping from the vertical support 186L. That is, the locking means 192L includes the hook bar 193L and the hook 194L. The other diagonal member 190R and locking means 192R have the same configuration as the one diagonal member 190L and locking means 192L. Therefore, the tenth embodiment is superior to the first embodiment in strength in terms of strength by providing each of the diagonal members 190L and 190R. Of course, other commonly used locking means may be used.
[0116]
Now, in this embodiment, as shown in FIG. 33, the diagonal members 190L and 190R are made to extend along the lower horizontal column 182, and the slide member 187 is moved to the left or right with respect to the upper vertical column 181. 33, the rod 183 is rotated with respect to the lower horizontal column 182 so that the upper vertical column 181, the rod 183, and the lower vertical column 182 are horizontal to each other, as shown in FIG. Further, the main bodies 185L, 185R of the upper vertical supports 205L, 205R are respectively housed in the lower vertical supports 186L, 186R, respectively, and the main bodies 185L, 185R are rotated with respect to the tips 184L, 184R, respectively, so that the lower horizontal support 182 is formed. 33, the preceding handrail can be folded as shown in FIG.
[0117]
That is, even in the tenth embodiment, the preceding handrail can be made compact. Further, since the number of parts is smaller than that of the conventional handrail, the weight of the preceding handrail can be reduced, and the manufacturing cost can be reduced as compared with the conventional handrail.
[0118]
On the other hand, in order to use the preceding handrail, from the folded state, the main body 185L, 185R is rotated with respect to the distal end portions 184L, 184R, respectively, to form a straight rod-like body. The main bodies 185L and 186R of the upper vertical supports 205L and 205R are drawn out from the lower vertical supports 186L and 186R, and the main bodies 185L and 186R are fixed to the lower vertical supports 186L and 186R by the restricting members J, respectively, and then slide. Rotating the rod 183 with respect to the lower horizontal support 182 while sliding the member 187 in the axial direction with respect to the upper vertical support 181 makes the rod 183 perpendicular to the lower horizontal support 182 and the upper vertical support 181. Then, each of the diagonal members 190L, 190R is fixed to each of the lower vertical columns 186L, 186R by locking means 192L, 192R, respectively. That. Then, the diagonal members 190L and 190R are fixed to the lower vertical columns 186L and 186R, respectively, the lower horizontal column 182 is fixed by the diagonal members 190L and 190R, and the upper horizontal column 181 is fixed to the lower horizontal column 182. Since the rod 183 cannot rotate, the rod 183 cannot be rotated, and the rod 183 is positioned. Further, the distal ends 184L, 184R of the upper vertical columns 205L, 205R are also positioned relative to the upper horizontal column 181. As a result, each member of the preceding handrail can be fixed.
[0119]
When the leading handrail is attached to the vertical member T from the floor below, the upper vertical columns 205L and 205R are held against the lower vertical columns 186L and 186R by holding the ends of the diagonal members 190L and 190R and pushing up. The leading handrail can be moved upward to assemble the used handrail, and the diagonal members 190L and 190R are rotatably attached to the lower horizontal column 182, so that the lower horizontal column 182 is free of diagonal members. Compared with the preceding handrail which must be assembled by using, the work of attaching the preceding handrail while the operator always raises both arms is further simplified.
[0120]
Further, as for the fixing means for fixing each vertical support to the vertical member, similarly to the first embodiment, a plate F and a holding tool K or two holding tools K may be provided on both the vertical supports. As in the first embodiment, a fragile portion may be appropriately provided.
[0121]
Subsequently, an eleventh embodiment shown in FIGS. 35 and 36 will be described. As shown in FIG. 35, the preceding handrail according to the eleventh embodiment is fixed between a pair of vertical members T, T of a pair of building frames, and a pair of right and left vertical columns V13, fixed to the respective vertical members T, T. V14, a pair of upper and lower horizontal columns 211, 212 bridged between the vertical columns V13, V14, a rod 213 bridged between the horizontal columns 211, 212, and each of the vertical columns V13, 14 slidably. The inserted slide members 216L and 216R, the plate F holding the vertical members T provided on the respective slide members 216L and 216R, and the holding members K holding the vertical members T provided on the vertical columns V13 and V14. It is composed of
[0122]
The details will be described below. As shown in FIG. 35, each of the vertical columns V13 and V14 is composed of a main body 215L and 215R, and distal ends 214L and 214R rotatably supported by the main bodies 215L and 215R. ing.
[0123]
More specifically, in the left vertical column V13 on the left side in FIG. 35, the distal end portion 214L is rotatably supported by the distal end of the main body 215L, and the lower side portion of the main body 215L is the first embodiment. A restricting member J composed of a spring (not shown) and a locking member (not shown) is provided. A slide member 216L is slidably mounted on the main body 215L.
[0124]
Further, a hole (not shown) with which a locking member (not shown) of the regulating member J is engaged is provided on an upper side portion in FIG. 32 of the slide member 216L. When the locking member (not shown) of the regulating member J is engaged, the movement of the slide member 216L with respect to the main body 215L is regulated. A holding member K for holding a vertical member T similar to that of the first embodiment is provided at the lower end in FIG. 35 of the main body 215L of the left vertical support V13, and the sliding member 216L has a vertical member T. A plate F similar to that of the first embodiment is provided. The other right vertical column V12 has the same configuration as the left vertical column V13.
[0125]
Further, one end of the upper horizontal support 211 is connected to the upper end of the distal end 214L of the left vertical support V13, and the other end of the upper horizontal support 211 is connected to the upper end of the distal end 214R of the right vertical support V14. One end of the lower horizontal support 212 is slidably mounted on the main body 215L of the left vertical support V13, while the other end of the lower horizontal support 212 is slidably mounted on the main body 215R of the right vertical support V14. It is installed. Therefore, the lower horizontal column 212 can slide and move on the left and right vertical columns V13 and V14.
[0126]
Further, a rod 213 that connects both the upper horizontal support 211 and the lower horizontal support 212 is bridged. The rod 213 has its proximal end rotatably supported at the approximate center of the lower horizontal support 212, and has its distal end slidably and rotatably mounted on the upper horizontal support 211 via a slide member 217. The slide member 217 has the same configuration as the slide members 88L and 88R of the above-described fourth embodiment, and can slide and move on the upper horizontal support 211.
[0127]
Although not shown, in order to fix the slide member 217, a combination of a spring and a locking member similar to that of the above-described first embodiment is provided in the upper horizontal support 211 on which the slide member 217 is mounted. , The slide member 217 may be fixed on the upper lateral support 181.
[0128]
Now, in this embodiment, the rod 213 is rotated with respect to the lower horizontal column 212 while sliding the slide member 217 in either the left or right direction with respect to the upper vertical column 211, and FIG. As shown, the upper vertical support 211, the rod 213, and the lower vertical support 212 are made horizontal to each other, and the main bodies 215L, 215R of the upper vertical support V13, V14 are respectively attached to the tips 214L, 214R. By rotating so as to follow the lower horizontal support 212, the preceding handrail can be folded as shown in FIG.
[0129]
That is, even in the eleventh embodiment, the preceding handrail can be made compact. Further, since the number of parts is smaller than that of the conventional handrail, the weight of the preceding handrail can be reduced, and the manufacturing cost can be reduced as compared with the conventional handrail.
[0130]
Further, in the preceding handrail, each of the slide members 216L and 216R provided with the plate F can be slid in the axial direction with respect to each of the vertical supports V13 and 14, respectively. When mounting, first, the slide members 216L and 216R are respectively positioned above the vertical columns V13 and V14, and the plate F can be mounted on the vertical member T. Further, from this state, it is sufficient that the vertical supports V13, 14 are slid upward with respect to the slide members 216R, 216L fixed to the vertical member T, and the vertical member T is clamped by the clamp K. That is, in the preceding handrail according to the present embodiment, when the preceding handrail is attached to the vertical member T, the preceding handrail is first temporarily fixed to the vertical member T with the plate F, and the preceding handrail cannot fall off the vertical member T. The handrail can be kept in a state, and it is not necessary to lift the preceding handrail so much when temporarily holding the preceding handrail, so that the work of attaching the worker becomes easy and at the same time, the leading handrail when temporarily fixing the handrail is used. The center of gravity is lower than that of the conventional handrail, so that the worker is prevented from wandering, and the safety of the worker is improved.
[0131]
As for the fixing means for fixing each vertical support to the vertical support, two holding tools K may be provided on both vertical supports, and further, a weak portion may be provided as appropriate similarly to the first embodiment. .
[0132]
【The invention's effect】
According to the invention of each claim, the preceding handrail can be made compact. Further, since the number of parts is smaller than that of the conventional handrail, the weight of the preceding handrail can be reduced, and the manufacturing cost can be reduced as compared with the conventional handrail. In addition, the folding method is simple, and the assembling at the time of attachment is simple, and the strength is advantageous.
[0133]
According to the eleventh aspect of the present invention, since the slide member is provided with the plate or the holding member, when attaching the leading handrail to the vertical member, the leading handrail is first temporarily fixed to the vertical member with the plate or the holding member. Since the preceding handrail can be prevented from dropping from the vertical member, and the preceding handrail does not need to be lifted so much when the preceding handrail is temporarily fixed, the work of attaching the worker becomes easier. At the same time, since the center of gravity of the preceding handrail at the time of temporary fixing is lower than that of the conventional preceding handrail, it is possible to prevent the worker from wandering and to improve the safety of the worker. .
[0134]
Further, according to the eleventh and twelfth aspects of the present invention, since the notch is provided in the plate, when attaching the handrail support to the vertical member, various members attached to the vertical member can pass through the notch. As a result, various members do not interfere.
[0135]
According to the eleventh and thirteenth aspects of the present invention, by pulling out the wedges, even if the vertical members are stacked, they can be removed from the vertical members, which is convenient.
[0136]
According to the fourteenth aspect of the present invention, by providing a hooking member on the other lower vertical support, the weight of the preceding handrail can be reduced, so that it is convenient for transportation and the manufacturing cost is reduced.
[0137]
According to the invention of claim 15, the worker who attached the lifeline to the horizontal support of the leading handrail steps down while working on the framework scaffolding, and falls down, and falls down. When a large impact load is applied, a large impact force acts as a reaction to the dropped worker, but the fragile portion is positively deformed, and the impact force acting on the worker is reduced. That is, since the fragile portion can reduce the impact force applied to the worker falling from the framework scaffold, it is possible to prevent the worker from being subjected to a large impact force and being injured. The safety is improved as compared with the preceding handrail.
[Brief description of the drawings]
FIG. 1 is a front view of a preceding handrail according to a first embodiment.
FIG. 2 is an enlarged vertical sectional view of a regulating member according to the first embodiment.
FIG. 3 is a front view of the preceding handrail according to the first embodiment in a compact state.
FIG. 4 is a front view of the preceding handrail according to the first embodiment in a state where the handrail is attached between the vertical members of the building frame.
FIG. 5 is a front view of the preceding handrail according to the first embodiment showing a state deformed by the fragile portion.
FIG. 6 is an enlarged plan view of a plate.
FIG. 7 is an enlarged plan view of the holding tool.
FIG. 8 is a front view showing an example of a fragile portion.
FIG. 9 is a front view of a preceding handrail according to the second embodiment.
FIG. 10 is an enlarged front view of a lower vertical support on the left side of a preceding handrail according to the second embodiment.
FIG. 11 is a front view of a preceding handrail according to the second embodiment in a compact state.
FIG. 12 is a front view of a preceding handrail according to the third embodiment.
FIG. 13 is an enlarged front view of an upper horizontal support of a preceding handrail according to the third embodiment.
FIG. 14 is an enlarged cross-sectional view of a regulating member of a preceding handrail according to a third embodiment.
FIG. 15 is a front view of a preceding handrail according to the third embodiment in a compact state.
FIG. 16 is a front view of a preceding handrail according to the fourth embodiment.
FIG. 17 is an enlarged front view of a left lateral support below a preceding handrail according to a fourth embodiment.
FIG. 18 is a front view of a preceding handrail according to a fourth embodiment in a compact state.
FIG. 19 is a front view of a preceding handrail according to the fifth embodiment.
FIG. 20 is an enlarged front view of a part of a left vertical column of a preceding handrail according to a fifth embodiment.
FIG. 21 is a front view of a preceding handrail according to a fifth embodiment in a compact state.
FIG. 22 is a front view of a preceding handrail according to the sixth embodiment.
FIG. 23 is an enlarged right side view of a part of the left vertical support of the preceding handrail according to the sixth embodiment.
FIG. 24 is a front view of a handrail according to a seventh embodiment;
FIG. 25 is a front view of a preceding handrail according to the seventh embodiment in a compact state.
FIG. 26 is a front view of a preceding handrail according to the eighth embodiment.
FIG. 27 is an enlarged front view of a part of the upper horizontal support of the preceding handrail according to the eighth embodiment.
FIG. 28 is an enlarged elevation view of a part of the upper horizontal support of the preceding handrail according to the eighth embodiment.
FIG. 29 is a front view of a preceding handrail according to the eighth embodiment in a compact state.
FIG. 30 is a front view of a preceding handrail according to the ninth embodiment;
FIG. 31 is a front view of a preceding handrail according to the ninth embodiment in a compact state.
FIG. 32 is a front view of a preceding handrail according to the tenth embodiment.
FIG. 33 is a front view of a preceding handrail according to the tenth embodiment in a compact state.
FIG. 34 is an enlarged front view of a part of the lower horizontal support of the preceding handrail according to the tenth embodiment.
FIG. 35 is a front view of a preceding handrail according to the eleventh embodiment.
FIG. 36 is a front view of a preceding handrail according to the eleventh embodiment in a compact state.
[Explanation of symbols]
1,41, X1, X3,101,121, X5, X7,171,181,211 Upper horizontal support
2,42, X2, X4,102,122, X6, X8,172,182,212 Lower horizontal support
3,43,63,83,103,123,173,183,213 Rod
5L, 5R, 45L, 45R, 108L, 108R, 124L, 124R, 143L, 143R, 205L, 205R Upper vertical support
6L, 6R, 46L, 46R, 115L, 115R, 125L, 125R, 145L, 145R, 186L, 186R Lower horizontal support
49L, 49R, 87L, 87R, 190L, 190R Diagonal
61L, 62L, 81L, 82L, 151L, 152L Left lateral support
61R, 62R, 81R, 82R, 151R, 152R Left lateral support
67L, 86L, 155L, 174L, V1, V3, V5, V7, V9, V11, V13 Left vertical support
67R, 86R, 155R, 174R, V2, V4, V6, V8, V10, V12, V14 Left vertical support
104, 216L, 216R Slide member
105L, 105R, 185L, 185R, 215L, 215R Main body
107L, 107R, 184L, 184R, 214L, 214R
158 connection
F, F1 plate
H1, H2, H3 Hook member
K clamp
141L, 142L Left side horizontal support as outer tube
141R, 142R Inner rod right side horizontal support
T vertical members
Z fragile part

Claims

In the preceding handrail having a pair of left and right vertical struts fixed between the pair of building frames and a pair of left and right vertical struts fixed to each vertical strut and a pair of upper and lower horizontal struts spanned between each vertical strut, each horizontal strut is Connected by a rod at the approximate center, each vertical strut is composed of an upper vertical strut and a lower vertical strut, respectively, and a pair of horizontal struts are connected between each upper vertical strut, and each lower vertical strut is connected to each lower vertical strut. A preceding handrail, comprising a fixing means for fixing a support to the vertical member, and an upper vertical support movably mounted on the lower vertical support along an axial direction.

In the preceding handrail having a pair of left and right vertical struts fixed between the pair of building frames and a pair of left and right vertical struts fixed to each vertical strut and a pair of upper and lower horizontal struts spanned between each vertical strut, each horizontal strut is Connected by a rod at the approximate center, a pair of left and right diagonal members that are rotatably supported at the base end on the lower horizontal support are provided, and each vertical support is composed of an upper vertical support and a lower vertical support, respectively. A pair of horizontal struts are connected between the upper vertical struts, a locking means for locking one lower vertical strut and one diagonal member, and a locking means for locking the other lower vertical strut and the other diagonal member. A locking means and a fixing means for fixing each lower vertical support to the above-mentioned vertical member are provided on each lower vertical support, and the upper vertical support is mounted movably in the axial direction on the lower vertical support. A preceding handrail characterized by the following.

In the preceding handrail having a pair of left and right vertical struts fixed between the pair of building frames and a pair of left and right vertical struts fixed to each vertical strut and a pair of upper and lower horizontal struts spanned between each vertical strut, each horizontal strut is Each is composed of a left horizontal support and a right horizontal support. The left vertical support rotatably supports one end of each left horizontal support, and the right vertical support rotatably supports one end of each right horizontal support. The other end of the left lateral column of the upper lateral column and the other end of the right lateral column are rotatably supported at the distal end side, and the other end of the left lateral column of the lower lateral column and the right lateral portion of the lower lateral column on the base side. A handrail comprising: a rod for rotatably supporting the other end of a column; and a fixing means for fixing each vertical column to the vertical member on each vertical column.

In the preceding handrail having a pair of left and right vertical struts fixed between the pair of building frames and a pair of left and right vertical struts fixed to each vertical strut and a pair of upper and lower horizontal struts spanned between each vertical strut, each horizontal strut is Each is composed of a left horizontal support and a right horizontal support. The left vertical support rotatably supports one end of each left horizontal support, and the right vertical support rotatably supports one end of each right horizontal support. The other end of the left lateral column of the upper lateral column and the other end of the right lateral column are rotatably supported at the distal end side, and the other end of the left lateral column of the lower lateral column and the right lateral portion of the lower lateral column on the base side. A rod that rotatably supports the other end of the column and a distal end side is slidably and rotatably mounted on the lower left lateral column, and a left diagonal member and a distal end side rotatably mounted on the base side and rotatably mounted on the left vertical column. It is slidably and rotatably mounted on the lower right horizontal support, and the base end rotates on the right vertical support. The axially supported by providing a right diagonal member, characterized in that each longitudinal strut each longitudinal strut formed by providing a fixing means for fixing to the longitudinal members prior handrail.

In the preceding handrail having a pair of left and right vertical struts fixed between the vertical members of the pair of building frames and a pair of left and right vertical struts fixed to each vertical strut and a pair of upper and lower horizontal struts spanned between each vertical strut, each vertical strut is A lower vertical strut composed of a main body and a tip rotatably supported by the main body, and a hollow upper vertical strut, wherein the tip is slidably inserted into the upper vertical strut; The slide member slidably inserted into the side horizontal support or the upper horizontal support and the substantially central portion of the side horizontal support on which the slide member is not inserted at the distal end are rotatably supported, and the slide member is supported at the base end. A rotatably supported rod is provided, the upper end of each upper vertical column is connected to the upper horizontal column, and both ends of the lower horizontal column are slidably mounted on the lower vertical columns, respectively. A fixing hand that fixes each vertical support to the above vertical members on the body of the lower vertical support Preceding handrail, characterized in that formed by providing a.

In the preceding handrail having a pair of left and right vertical struts fixed between the pair of building frames and a pair of left and right vertical struts fixed to each vertical strut and a pair of upper and lower horizontal struts spanned between each vertical strut, each horizontal strut is Connected by a rod at the approximate center, each vertical strut is composed of an upper vertical strut and a lower vertical strut, respectively, and a pair of horizontal struts are connected between each upper vertical strut, and each lower vertical strut is connected to each lower vertical strut. A preceding handrail, comprising: fixing means for fixing a column to the vertical member; and each upper column is rotatably supported by a corresponding lower column.

In the preceding handrail having a pair of left and right vertical struts fixed between the pair of building frames and a pair of left and right vertical struts fixed to each vertical strut and a pair of upper and lower horizontal struts spanned between each vertical strut, each horizontal strut is Each of the vertical supports is composed of an outer tube connected to one vertical support and an inner rod movably inserted into the outer tube and connected to the other vertical support, and each vertical support is an upper vertical support and a lower vertical support, respectively. And a pair of horizontal struts are connected between the upper vertical struts, and each lower vertical strut is provided with fixing means for fixing each lower vertical strut to the vertical member, and each upper vertical strut is A preceding handrail, which is rotatably supported by a lower vertical support.

In the preceding handrail having a pair of left and right vertical struts fixed between the pair of building frames and a pair of left and right vertical struts fixed to each vertical strut and a pair of upper and lower horizontal struts spanned between each vertical strut, each horizontal strut is A fixing means for fixing each vertical strut to each vertical strut on the vertical member, comprising a left horizontal strut, a right horizontal strut, and a connecting portion for rotatably supporting the left horizontal strut and the right horizontal strut horizontally. A preceding handrail, comprising:

In a leading handrail having a pair of left and right vertical struts fixed between the vertical members of a pair of building frames and fixed to each of the vertical members and a pair of upper and lower horizontal struts spanned between the vertical struts, a leading end and a proximal end are provided. A rod is provided to rotatably support the approximate center of each horizontal support, and the left vertical support rotatably supports the tip of each horizontal support, and the right vertical support rotates the base end of each horizontal support. A preceding handrail, which is provided with a fixing means for freely supporting the shaft and fixing each of the vertical columns to the vertical member.

In the preceding handrail having a pair of left and right vertical struts fixed between the vertical members of the pair of building frames and a pair of left and right vertical struts fixed to each vertical strut and a pair of upper and lower horizontal struts spanned between each vertical strut, each vertical strut is An upper vertical support composed of a main body and a tip end rotatably supported by the main body, and a hollow lower vertical support, the main body being slidably inserted into the lower vertical support, The slide member slidably inserted into the horizontal support or the lower horizontal support and the substantially central portion of the horizontal support on the side where the slide member is not inserted at the distal end are rotatably supported and the slide member is supported at the base end. A rotatably supported rod is provided, the upper end of each upper vertical column is connected to the upper horizontal column, and both ends of the lower horizontal column are slidably attached to the upper vertical column body, respectively. A pair of left and right diagonals with the base end rotatably supported on the side horizontal support A locking means for locking one lower vertical support and one diagonal member, a locking means for locking the other lower vertical support and the other diagonal member, and A handrail comprising a fixing means for fixing a lower vertical support to the vertical member.

In the preceding handrail having a pair of left and right vertical struts fixed between the vertical members of the pair of building frames and a pair of left and right vertical struts fixed to each vertical strut and a pair of upper and lower horizontal struts spanned between each vertical strut, each vertical strut is It consists of a main body and a tip that is rotatably supported by the main body. A slide member that is slidably inserted into the upper horizontal support or the lower horizontal support and a side that is not inserted with the slide member at the distal end. A rod for rotatably supporting a substantially central portion of the column and rotatably supporting the slide member at a base end thereof; connecting a distal end of each vertical column to an upper horizontal column; Both ends of the column are slidably attached to the main body of the vertical column, and a plate that slidably holds the vertical column or a holding tool that holds the vertical column is attached to the main body of each vertical column. A holding tool for holding the vertical members is provided, and the plate is A rate body, a notch provided from the distal end side to the base end side of the plate body, and a holding hole for holding a vertical member provided at an intermediate portion of the notch, the holding tool is a holding tool body and A notch for inserting a vertical member provided on the distal end side of the holding member main body, and a wedge mechanism for holding the vertical member in cooperation with the notch provided on the front end of the holding member main body. A preceding handrail characterized by that.

The fixing means is composed of a plate having a base end fixed to each vertical support and holding the vertical member, and a holding device having a base end fixed to each vertical support and holding the vertical member. A notch provided from the distal end side to the base end side of the main body, and a holding hole for holding a vertical member provided at an intermediate portion of the notch, the holding device includes a holding device main body and a holding device main body. 11. A notch provided at a distal end side for inserting a vertical member, and a wedge mechanism for holding the vertical member in cooperation with the notch provided at the distal end of the holding tool body. The preceding handrail described in any of the above.

The fixing means is composed of two holding tools, the base end of which is fixed to each vertical support and holding the vertical member, wherein the holding tool includes a holding tool body, and a notch for inserting the vertical member provided on the distal end side of the holding tool body. The handrail according to any one of claims 1 to 10, comprising a wedge mechanism for holding the vertical member in cooperation with the notch provided at the tip of the holding tool main body.

A fixing means, a plate having a base end side fixed to one vertical strut and holding a vertical member, a base end side fixed to one vertical strut and holding a vertical member, and a pair of fixing members provided on the other vertical strut; The plate comprises a plate body, an insertion hole into which one of the adjacent preceding handrails provided on the plate body is inserted, and a plate provided from the distal side to the proximal side of the plate body. A notch, and a holding hole for holding a vertical member provided at an intermediate portion of the notch, and the holding device is a holding device main body and the other hook portion of an adjacent preceding handrail provided in the holding device main body. An insertion hole into which a member is inserted, a notch for inserting a vertical member provided at the distal end side of the holding member main body, and a wedge mechanism for holding the vertical member in cooperation with the notch provided at the distal end of the holding member body. The preceding handrail according to any one of claims 1 to 10, wherein the handrail is configured.

A fragile portion is provided between the position where the upper horizontal support is provided and the position where the lower horizontal support is provided near the left and right ends of each horizontal support and on each vertical support. The preceding handrail according to any one of claims 1 to 14.