JP2021059845A

JP2021059845A - Handrail brace

Info

Publication number: JP2021059845A
Application number: JP2019182888A
Authority: JP
Inventors: 山田　博; Hiroshi Yamada; 博山田; 敏朗青山; Toshiro Aoyama; 賢樹河合; Sakaki Kawai
Original assignee: Shinwa Co Ltd
Current assignee: Shinwa Co Ltd
Priority date: 2019-10-03
Filing date: 2019-10-03
Publication date: 2021-04-15
Anticipated expiration: 2039-10-03
Also published as: JP7130251B2

Abstract

To provide a handrail brace capable of easily performing a handrail preceding construction method by an operator and suppressing the curvature of one brace member after assembling to a scaffolding support.SOLUTION: In a handrail brace 10, projecting pieces 50 or the like for regulating the up movement or the down movement of other brace members intersecting each other when second mounting parts 31, 51 are mounted on a pair of scaffold supports 120 are respectively protrusively arranged at the lower part of the crossing part of each brace members 30, 40. The projecting amount of the projecting piece 50 or the like is set to an amount for releasing the locking of the projecting piece 50 or the like and allowing the oscillation of the respective brace members 30, 40 when both the bracing members 30, 40 are moved in the mutually separating direction in the case of not being attached to the pair of scaffold supports.SELECTED DRAWING: Figure 2

Description

本発明は、仮設足場に使用される手摺り筋交いに関する。 The present invention relates to handrail braces used for temporary scaffolding.

従来、複数の足場支柱を所定間隔毎に配置して、足場支柱間に手摺り筋交いを取り付ける場合、手摺先行工法が推奨されている。手摺先行工法は、足場の組立時に作業床に載る前に当該作業床の端となる箇所に適切な手摺を先行して設置し、かつ、解体時にも作業床を取り外すまで、必ず手摺が残置されている工法である。 Conventionally, when a plurality of scaffolding struts are arranged at predetermined intervals and handrail braces are attached between the scaffolding struts, the handrail preceding method is recommended. In the handrail preceding method, an appropriate handrail is installed in advance at the end of the work floor before it is placed on the work floor when assembling the scaffold, and the handrail is always left until the work floor is removed even when dismantling. It is a construction method that is being used.

上記の工法に使用される手摺り筋交いとして、特許文献１及び特許文献２が公知である。特許文献１の例を従来例１という。特許文献２の例を従来例２という。
図１１に示すように、従来例１の手摺り筋交い１００は、略中央部で交差状に配置されて固定ピン１０３にて固定された一対の斜交材１０２と、各斜交材１０２の上端部間を連結した手摺り部材１０４とにより構成されている。手摺り部材１０４は、その両端にある固定部材１０５に対して、固定ピン１０６により各斜交材１０２の上端部に対して固定されている。 Patent Document 1 and Patent Document 2 are known as handrail braces used in the above construction method. An example of Patent Document 1 is referred to as Conventional Example 1. The example of Patent Document 2 is referred to as Conventional Example 2.
As shown in FIG. 11, the handrail brace 100 of the conventional example 1 has a pair of diagonal braces 102 arranged in a crossing shape at a substantially central portion and fixed by a fixing pin 103, and an upper end of each diagonal braced member 102. It is composed of a handrail member 104 that connects the parts. The handrail member 104 is fixed to the fixing members 105 at both ends thereof by fixing pins 106 to the upper end portion of each oblique member 102.

また、両固定部材１０５には、足場支柱１２０の外周面に固定されたクサビ受け１２２の穴部に対して着脱自在に挿入して係止されるクサビ部１０７が形成されている。両斜交材１０２の下端にも、前記足場支柱１２０の外周面に固定されたクサビ受け１２２の穴部よりも下方において、前記足場支柱の外周面に固定されたクサビ受け１２２の穴部に対して着脱自在に挿入して係止されるクサビ部１２７が形成されている。 Further, both fixing members 105 are formed with wedge portions 107 that are detachably inserted and locked into the holes of the wedge receiver 122 fixed to the outer peripheral surface of the scaffolding column 120. Also at the lower end of both oblique members 102, below the hole of the wedge receiver 122 fixed to the outer peripheral surface of the scaffolding support 120, with respect to the hole of the wedge receiving 122 fixed to the outer peripheral surface of the scaffolding support. A wedge portion 127 is formed which is detachably inserted and locked.

従来例１の手摺り筋交い１００を、上記手摺先行工法で、足場支柱１２０に取付ける場合、図１１に示すように、足場支柱１２０間に掛け渡された作業床１３０に載る作業者１６０が、一対の斜交材１０２を上方へ挙げた状態にする。そして、この状態で、手摺り部材１０４の両端部のクサビ部１０７及び両斜交材１０２のクサビ部１２７をそれぞれクサビ受け１２２の穴部に対して挿入係止する。 When the handrail brace 100 of the conventional example 1 is attached to the scaffolding column 120 by the above-mentioned handrail preceding method, as shown in FIG. 11, a pair of workers 160 resting on the work floor 130 hung between the scaffolding columns 120 The oblique material 102 of the above is in a state of being raised upward. Then, in this state, the wedge portions 107 at both ends of the handrail member 104 and the wedge portions 127 of both diagonal cross members 102 are inserted and locked with respect to the holes of the wedge receiving 122, respectively.

図１２に示すように、従来例２の手摺り筋交い１０８は、手摺り部材１１０の両端部に対して、それぞれ一対の筋交い部材１１２の端部が上下方向に揺動自在に軸着されている。また、手摺り部材１１０の両端部には、足場支柱外周面に固定されたクサビ受け１２２の穴部に対して挿入して取り付けられる第１取付部１１４が形成されている。さらに、一対の筋交い部材１１２の下端部には、前記足場支柱１２０の外周面に固定されたクサビ受け１２２の穴部よりも下方において、前記足場支柱１２０の外周面に固定されたクサビ受け１２２の穴部に対して着脱自在に挿入して係止される第２取付部１１６が設けられている。 As shown in FIG. 12, in the handrail brace 108 of the conventional example 2, the ends of the pair of brace members 112 are pivotally attached to both ends of the handrail member 110 so as to be swingable in the vertical direction. .. Further, at both ends of the handrail member 110, first mounting portions 114 that are inserted and mounted into the holes of the wedge receiving 122 fixed to the outer peripheral surface of the scaffolding column are formed. Further, at the lower end of the pair of brace members 112, below the hole of the wedge receiver 122 fixed to the outer peripheral surface of the scaffolding column 120, the wedge receiver 122 fixed to the outer peripheral surface of the scaffolding column 120 A second mounting portion 116 is provided which is detachably inserted and locked with respect to the hole portion.

従来例２の手摺り筋交い１０８を、上記手摺先行工法で、足場支柱１２０に取付ける場合、図１３に示すように、足場支柱１２０間に掛け渡された作業床１３０に載った作業者１６０は、交差させない状態での一対の筋交い部材１１２を把持し、上方へ手摺り筋交い１００を挙げる。そして、まず、手摺り部材１１０の両第１取付部１１４を、足場支柱１２０の外周面に固定されたクサビ受け１２２の穴部に挿入係止する。 When the handrail brace 108 of the conventional example 2 is attached to the scaffolding column 120 by the above-mentioned handrail preceding method, as shown in FIG. 13, the worker 160 resting on the work floor 130 hung between the scaffolding columns 120 The pair of brace members 112 in a non-intersecting state are gripped, and the handrail brace 100 is raised upward. Then, first, both first mounting portions 114 of the handrail member 110 are inserted and locked into the holes of the wedge receiving 122 fixed to the outer peripheral surface of the scaffolding column 120.

その後、筋交い部材１１２の下端部に設けられた第２取付部１１６を足場支柱１２０の外周面に固定されたクサビ受け１２２の穴部に挿入係止する。
ここで、図１１の手摺り筋交い１００と、図１３の手摺り筋交い１０８の取付け作業の負担度について考察すると、手摺り筋交い１００の両斜交材１０２は、相互に固定されるとともに、上端部が手摺り部材１０４に固定されていて、その上下高さは、変化することがなく一定となっている。 After that, the second mounting portion 116 provided at the lower end portion of the brace member 112 is inserted and locked into the hole portion of the wedge receiving 122 fixed to the outer peripheral surface of the scaffolding column 120.
Here, considering the degree of burden of the attachment work of the handrail brace 100 in FIG. 11 and the handrail brace 108 in FIG. 13, both oblique braces 102 of the handrail brace 100 are fixed to each other and have an upper end portion. Is fixed to the handrail member 104, and its vertical height is constant without change.

このため、手摺り筋交い１００、１０８のそれぞれの手摺り部材１０４、１１０を足場支柱１２０に対して同じ高さに配置したい場合は、手摺り筋交い１００は、両斜交材１０２を把持する作業者１６０の手を、手摺り筋交い１０８の場合よりもより高く挙げる作業が必須となり、作業者に負担がかかる（図１１、図１３参照）。一方、手摺り筋交い１０８の筋交い部材１１２は、揺動自在となっているため、筋交い部材１１２を上下方向に沿うように移動すれば、全体の上下高さは、高くなる。 Therefore, when it is desired to arrange the handrail members 104 and 110 of the handrail braces 100 and 108 at the same height with respect to the scaffolding support 120, the handrail brace 100 is an operator who grips both diagonal crossing members 102. It is essential to raise the 160 hands higher than in the case of the handrail brace 108, which imposes a burden on the operator (see FIGS. 11 and 13). On the other hand, since the brace member 112 of the handrail brace 108 is swingable, if the brace member 112 is moved along the vertical direction, the overall vertical height becomes higher.

従って、手摺り筋交い１０８では、手摺り筋交いの足場支柱１２０に対する取付け、及び取り外しの作業は、作業者１６０の手をそれほど挙げなくても操作できることから、楽な姿勢で行える利点がある。 Therefore, in the handrail brace 108, the work of attaching and detaching the handrail brace to the scaffolding column 120 can be performed without raising the hand of the worker 160 so much, so that there is an advantage that the work can be performed in a comfortable posture.

特開２００８−６３９０３号公報Japanese Unexamined Patent Publication No. 2008-63903 特開２０１０−１９０００１号公報Japanese Unexamined Patent Publication No. 2010-190001

ここで、例えば図１２に示すように、手摺り筋交い１０８が隣接する足場支柱１２０間に取り付けられた状態で、足場支柱１２０に対して手摺り部材１１０が長さ方向Ａに横荷重が加わった場合を想定する。この場合、図１２に示すように、一対の筋交い部材１１２のうち、一方の筋交い部材１１２には、圧縮の力Ｆ１が働き、他方の筋交い部材１１２には引張りの力Ｆ２が働く。図１２では、左方から足場支柱１２０に横荷重が加わった場合について図示されているが、右方から足場支柱１２０に横荷重が加わった場合は、一対の筋交い部材１１２のうち、一方の筋交い部材１１２には、引張の力が働き、他方の筋交い部材１１２には圧縮の力が働くことは同様である。従って、図１２の例について、以下説明する。 Here, for example, as shown in FIG. 12, a lateral load is applied to the scaffolding column 120 by the handrail member 110 in the length direction A in a state where the handrail brace 108 is attached between adjacent scaffolding columns 120. Imagine a case. In this case, as shown in FIG. 12, of the pair of brace members 112, a compressive force F1 acts on one brace member 112, and a tensile force F2 acts on the other brace member 112. FIG. 12 shows a case where a lateral load is applied to the scaffolding column 120 from the left side, but when a lateral load is applied to the scaffolding column 120 from the right side, one of the pair of brace members 112 is engaged. Similarly, a tensile force acts on the member 112 and a compressive force acts on the other brace member 112. Therefore, the example of FIG. 12 will be described below.

圧縮の力Ｆ１が働いた一方の筋交い部材１１２は、圧縮の力Ｆ１が大きいほど図１２の二点鎖線で示すように変形する虞がある。図１２では、一方の筋交い部材１１２の中央部分が、上方へ湾曲した場合を想定して図示されているが、湾曲する方向は上方とは限らず、下方、或いは紙面に直交する方向等への湾曲する虞もある。 The one brace member 112 on which the compression force F1 acts may be deformed as shown by the alternate long and short dash line in FIG. 12 as the compression force F1 increases. In FIG. 12, the central portion of one of the brace members 112 is shown assuming that it is curved upward, but the bending direction is not limited to upward, but downward, or in a direction orthogonal to the paper surface, or the like. There is also a risk of bending.

一方、図１１に示すように従来例１では、両斜交材１０２が略中央部で固定ピン１０３で固定されているため、このような問題はない利点がある。
従って、従来例２では、足場支柱に対する取付け取り外しの作業は、従来例１とは異なり、作業者は楽な姿勢で行える利点があるものの、従来例１の上記利点を得られない問題がある。 On the other hand, as shown in FIG. 11, in the conventional example 1, since the both oblique members 102 are fixed by the fixing pin 103 at the substantially central portion, there is an advantage that there is no such problem.
Therefore, in the conventional example 2, unlike the conventional example 1, the work of attaching and detaching the scaffolding column has an advantage that the operator can perform the work in a comfortable posture, but there is a problem that the above-mentioned advantage of the conventional example 1 cannot be obtained.

本発明の目的は、上記課題を解決して、作業者が手摺先行工法を行う場合においては、作業者は楽に作業を行うことができ、しかも、足場支柱に組み付け後において、一方の筋交い部材の湾曲を抑制する手摺り筋交いを提供することにある。 An object of the present invention is that when the worker performs the handrail preceding construction method by solving the above-mentioned problems, the worker can easily perform the work, and moreover, after assembling to the scaffolding support, one of the bracing members The purpose is to provide a handrail brace that suppresses curvature.

上記問題点を解決するために、本発明の手摺り筋交いは、両端部に第１取付部を有していて、一対の足場支柱に対して該第１取付部が取り付けられて水平に配置される手摺り部材と、前記手摺り部材の両端に上端部がそれぞれ揺動が可能に軸着された一対の筋交い部材であって、下端部に第２取付部を有していて、前記一対の足場支柱に対して該第２取付部が取り付けられて、相互に交差して配置される一対の筋交い部材とを、備えた手摺り筋交いにおいて、各筋交い部材の相互に交差する部位の下方部位、若しくは上方部位には、前記一対の足場支柱に前記第２取付部が取り付けられた際、相互に交差する他の筋交い部材の上動、または下動を規制する係止部がそれぞれ突出して配置され、前記係止部の突出量は、前記一対の足場支柱への取り付けられていない場合は、両筋交い部材が相互に離間する方向に移動した際に、前記係止部の係止を解除して各筋交い部材の前記揺動を許容する量としている。 In order to solve the above problem, the handrail brace of the present invention has first mounting portions at both ends, and the first mounting portions are mounted on a pair of scaffolding columns and arranged horizontally. A pair of bracing members whose upper ends are pivotally attached to both ends of the handrail member so as to be swingable, and which has a second attachment portion at the lower end portion. In a handrail brace provided with a pair of brace members that are attached to the scaffolding column and are arranged so as to intersect each other, a lower portion of each brace member that intersects with each other. Alternatively, when the second mounting portion is attached to the pair of scaffolding columns, locking portions that regulate the upward or downward movement of other bracing members that intersect each other are projected and arranged in the upper portion. If the locking portion is not attached to the pair of scaffolding columns, the amount of protrusion of the locking portion releases the locking of the locking portion when the two brace members move in a direction in which they are separated from each other. The amount is set to allow the swing of each brace member.

上記構成の手摺り筋交いでは、一対の足場支柱に取り付けられておらず、かつ、両筋交い部材が交差している状態のとき、まず、作業者は、係止部の突出量を超えて両筋交い部材を相互に離間する方向に移動させた後、両筋交い部材を相互に開く方向へ揺動させる。この両筋交い部材が揺動操作された場合、両筋交い部材の係止部は、それぞれ筋交い部材とは干渉することなく、揺動が許容される。この後、開いた状態となった両筋交い部材を作業者が各筋交い部材を把持して、その手摺り筋交いの上下高さを高くした状態にして、一対の足場支柱に対して第１取付部と第２取付部とを取り付ける。この取付時には、両筋交い部材を再び交差状態になるように揺動操作する。このとき、各筋交い部材の相互に交差する部位の下方部位、若しくは上方部位には、一対の足場支柱に前記第２取付部が取り付けられた際、相互に交差する他の筋交い部材の上動、または下動を規制する係止部がそれぞれ突出して配置される。 In the handrail brace of the above configuration, when the brace is not attached to the pair of scaffolding columns and both brace members intersect, the operator first exceeds the protrusion amount of the locking portion and makes the brace. After moving the members in a direction that separates them from each other, the brace members are swung in a direction that opens each other. When the brace members are swung, the locking portions of the brace members are allowed to swing without interfering with the brace members. After that, the operator grasps each brace member in the open state, and raises the vertical height of the brace member, and the first mounting portion is attached to the pair of scaffolding columns. And the second mounting part are mounted. At the time of this attachment, the brace members are oscillated so as to be in an intersecting state again. At this time, when the second attachment portion is attached to the pair of scaffolding struts, the upper part of each brace member intersects with each other, and the other brace members intersect with each other. Alternatively, the locking portions that regulate the downward movement are arranged so as to project.

この取付時には、作業者の手をそれほど挙げなくても操作できることから、手摺先行工法を楽な姿勢で行える。さらに、手摺り筋交いの両端が一対の足場支柱に取り付けられた状態において、足場支柱に横荷重が加わって、相互に交差する他の筋交い部材の上動、または下動をしようとしても一方の係止部が、その上動、または下動を規制する。 At the time of this installation, since the operation can be performed without raising the operator's hand so much, the handrail preceding construction method can be performed in a comfortable posture. Further, in a state where both ends of the handrail brace are attached to a pair of scaffolding struts, even if a lateral load is applied to the scaffolding struts and an attempt is made to move the other struts that intersect each other up or down, one of them is engaged. The stop regulates its up or down movement.

また、各係止部は、一対の筋交い部材が相互に離間方向へ移動しようとする際、相互に係止可能に配置されていてもよい。
上記構成により、一方の筋交い部材の湾曲する方向が上方のみならず、相互に離間する方向に湾曲しようとしても、一方の係止部が、他方の係止部に係止してその方向への湾曲を抑制する。 Further, the locking portions may be arranged so as to be able to lock each other when the pair of bracing members try to move in the direction of separation from each other.
With the above configuration, even if one of the brace members bends not only upward but also in a direction away from each other, one locking portion locks on the other locking portion and moves in that direction. Suppress bending.

また、前記下方部位、若しくは前記上方部位は、各筋交い部材の相互に交差する部位の直近部位が好ましい。
上記構成により、係止部が設けられた部位を各筋交い部材の相互に交差する部位の直近部位とすることにより、該直近部位に設けられた係止部が、相互に交差する他の筋交い部材の上動、または下動を即座に規制する。 Further, the lower portion or the upper portion is preferably a portion closest to a portion where the brace members intersect with each other.
According to the above configuration, by setting the portion where the locking portion is provided as the nearest portion of the portion where each brace member intersects with each other, the other brace member where the locking portion provided at the nearest portion intersects with each other. Immediately regulate ups and downs.

また、前記係止部は、突出片であってもよい。上記構成により、突出片により、相互に交差する他の筋交い部材の上動、または下動を規制する。
また、前記手摺り部材は、パイプにより構成されていてもよい。上記構成により、パイプによる手摺り部材であっても、上記の作用を容易に実現する。 Further, the locking portion may be a protruding piece. With the above configuration, the protruding pieces regulate the upward or downward movement of other bracing members that intersect each other.
Further, the handrail member may be composed of a pipe. With the above configuration, the above operation can be easily realized even with a handrail member using a pipe.

また、前記筋交い部材は、パイプにより構成されていてもよい。上記構成により、パイプによる筋交い部材であっても、上記の作用を容易に実現する。 Further, the brace member may be composed of a pipe. With the above configuration, the above operation can be easily realized even if the brace member is a pipe.

本発明によれば、作業者が手摺先行工法を行う場合においては、作業者は楽に作業を行うことができ、しかも、足場支柱に組み付け後において、一方の筋交い部材の湾曲を抑制できる効果を奏する。 According to the present invention, when the worker performs the handrail preceding construction method, the worker can easily perform the work, and moreover, after assembling to the scaffolding support, the bending of one of the brace members can be suppressed. ..

第１実施形態の手摺り筋交いの斜視図。The perspective view of the handrail brace of 1st Embodiment. 足場支柱に取り付けられた状態の手摺り筋交いの斜視図。A perspective view of the handrail brace attached to the scaffolding column. （ａ）は第１取付部の斜視図、（ｂ）は第１取付部の平面図。(A) is a perspective view of the first mounting portion, and (b) is a plan view of the first mounting portion. 第２取付部の斜視図。The perspective view of the 2nd mounting part. 第２取付部の取付状態時の一部を透視した斜視図。A perspective view showing a part of the second mounting portion in the mounted state. 第２取付部の取付解除時の一部を透視した正面図。A front view showing a part of the second mounting portion when the mounting is released. 第２取付部を足場支柱に取り付けた状態の断面図。Sectional drawing in the state which the 2nd attachment part was attached to the scaffolding support. （ａ）は各筋交い部材の相互に交差する部位の下方部位に設けられた突出片の斜視図、（ｂ）は、筋交い部材３０の連結本体部３２側から、すなわち、斜め下方から見た各筋交い部材の相互に交差する部位の下方部位に設けられた突出片の斜視図。(A) is a perspective view of a protruding piece provided in a portion below a portion where each brace member intersects with each other, and (b) is a perspective view of the brace member 30 viewed from the connecting main body 32 side, that is, diagonally downward. The perspective view of the protruding piece provided in the lower part of the part where the brace member intersects with each other. 第１実施形態の手摺り筋交いの作用を示す説明図。Explanatory drawing which shows the action of the handrail brace of 1st Embodiment. （ａ）は、第２実施形態における、各筋交い部材の相互に交差する部位の上方部位に設けられた突出片の斜視図、（ｂ）は（ａ）とは違う角度で見た各筋交い部材の相互に交差する部位の上方部位に設けられた突出片の斜視図。(A) is a perspective view of a protruding piece provided in a portion above a portion where each brace member intersects with each other in the second embodiment, and (b) is a perspective view of each brace member viewed from an angle different from (a). The perspective view of the protruding piece provided in the upper part of the part which intersects with each other. 従来例１の手摺り筋交いを足場支柱に取り付けるときの作業を示す説明図。The explanatory view which shows the work at the time of attaching the handrail brace of the prior art example 1 to a scaffolding support. 従来例１の手摺り筋交いの作用を示す説明図。Explanatory drawing which shows the action of the handrail brace of the prior art example 1. FIG. 従来例２の手摺り筋交いを足場支柱に取り付けるときの作業を示す説明図。The explanatory view which shows the work at the time of attaching the handrail brace of the prior art example 2 to a scaffolding support.

（第１実施形態）
以下、本発明を具体化した第１実施形態の手摺り筋交いを図１〜図９を参照して説明する。図１に示すように、手摺り筋交い１０は、図示しない建築用足場の手摺りを構成する棒状の手摺り部材２０と、建築用足場の筋交いを構成する棒状の筋交い部材３０、４０を備えている。手摺り部材２０、及び筋交い部材３０、４０は、金属製のパイプで構成されている。 (First Embodiment)
Hereinafter, the handrail brace of the first embodiment embodying the present invention will be described with reference to FIGS. 1 to 9. As shown in FIG. 1, the handrail brace 10 includes a rod-shaped brace member 20 that constitutes a handrail of a building scaffold (not shown), and rod-shaped brace members 30 and 40 that form a streak of a building scaffold. There is. The handrail member 20 and the brace members 30 and 40 are made of metal pipes.

手摺り部材２０は、直線状に形成された直線部２１と、直線部２１の一端で下方へ９０度湾曲して形成された湾曲部２２と、直線部２１の他端で下方へ９０度湾曲して形成された湾曲部２３とを有している。湾曲部２２、２３には、第１取付部２４、２５がそれぞれ設けられている。第１取付部２４、２５は、直線部２１を左右に延出する方向で見た状態で、左右反転すると同一構成となるため、以下では、第１取付部２４について説明する。そして、第１取付部２５において、第１取付部２４を構成する各部材と同一構成には、同一符号を付して、その説明を省略する。 The handrail member 20 has a straight portion 21 formed in a straight line, a curved portion 22 formed by bending downward by 90 degrees at one end of the straight portion 21, and a curved portion 22 formed by bending downward by 90 degrees at the other end of the straight portion 21. It has a curved portion 23 formed in the above. The curved portions 22 and 23 are provided with first mounting portions 24 and 25, respectively. The first mounting portions 24 and 25 have the same configuration when the straight portions 21 are viewed in a direction extending to the left and right and are flipped horizontally. Therefore, the first mounting portions 24 will be described below. Then, in the first mounting portion 25, the same reference numerals are given to the same configurations as the members constituting the first mounting portion 24, and the description thereof will be omitted.

図３（ａ）及び図３（ｂ）に示すように、第１取付部２４は、連結本体部２６を有している。連結本体部２６は、金属製であって、一対の側壁２６ａと、両側壁２６ａを連結する連結壁２６ｂとを備えていて、上下方向に延出されているとともに、横断面コ字状に形成されている。各側壁２６ａは、湾曲部２２の外周面に対して挟むように配置されて溶接等により一体に固定されている。 As shown in FIGS. 3A and 3B, the first mounting portion 24 has a connecting main body portion 26. The connecting main body 26 is made of metal and includes a pair of side walls 26a and a connecting wall 26b connecting both side walls 26a, which extends in the vertical direction and is formed in a U-shaped cross section. Has been done. Each side wall 26a is arranged so as to be sandwiched with respect to the outer peripheral surface of the curved portion 22, and is integrally fixed by welding or the like.

図３（ａ）に示すように、両側壁２６ａにおいて、連結壁２６ｂに近い領域は、下端から上方に向かって切欠き部２６ｃが形成されていることにより、両側壁２６ａにおいて、切欠き部２６ｃよりも連結壁２６ｂ側の部位と連結壁２６ｂとにより、下方へ指向する挿入部２７が形成されている。挿入部２７は、後述する足場支柱１２０のクサビ受け１２２の穴部１２５対して挿入離脱可能な大きさに形成されている。 As shown in FIG. 3A, in the region close to the connecting wall 26b on both side walls 26a, the cutout portion 26c is formed from the lower end to the upper side, so that the cutout portion 26c is formed on both side walls 26a. A downwardly pointing insertion portion 27 is formed by the portion closer to the connecting wall 26b and the connecting wall 26b. The insertion portion 27 is formed in a size that allows insertion and removal from the hole portion 125 of the wedge receiving 122 of the scaffolding support column 120, which will be described later.

図１、図２及び図３（ａ）に示すように、また、第１取付部２４、２５において、連結本体部２６の両側壁２６ａにおいて、切欠き部２６ｃよりも湾曲部２２側の下部間には、筋交い部材３０、４０の上端部が、上下方向に揺動自在に軸２８、２９により支持されている。また、筋交い部材３０、４０の軸２８、２９に対する取付けは、手摺り筋交い１０が足場支柱１２０に対して取付られていない状態では、筋交い部材３０、４０が筋交い部材４０、３０に設けられた図８（ａ）に示す突出片６０、５０との干渉を回避可能に足場側及び反足場側の移動、すなわち、揺動が可能となっている。 As shown in FIGS. 1, 2 and 3 (a), and in the first mounting portions 24 and 25, between the lower portions of the connecting main body 26 on both side walls 26a on the curved portion 22 side of the notch 26c. The upper ends of the brace members 30 and 40 are supported by the shafts 28 and 29 so as to be swingable in the vertical direction. Further, the attachment of the brace members 30 and 40 to the shafts 28 and 29 is a diagram in which the brace members 30 and 40 are provided on the brace members 40 and 30 in a state where the brace 10 is not attached to the scaffolding column 120. The scaffolding side and the anti-scaffolding side can move, that is, swing, so as to avoid interference with the protruding pieces 60 and 50 shown in 8 (a).

図３（ａ）に示すように、一方の側壁２６ａが、他方の側壁側に向かって屈曲された屈曲部２６ｄを介して下方へ延出された部位を有していて、その部位と他方の側壁２６ａ間において筋交い部材３０が揺動自在に軸支されている。なお、筋交い部材４０は、逆に他方の側壁２６ａが、一方の側壁側に向かって屈曲された図示しない屈曲部を介して下方へ延出された部位を有していて、その部位と一方の側壁２６ａ間において軸支されている。上記のように筋交い部材３０、４０の上端が上記のように配置されてそれぞれ揺動自在に軸支されていることにより、筋交い部材３０、４０は、干渉しないようにオフセットされて交差可能となっている。また、筋交い部材３０、４０は、図１に示すように相互に中央部が交差している状態から、筋交い部材３０の下端を時計回り方向へ、筋交い部材４０を反時計回り方向へそれぞれ揺動して、両下端部が接近通過後、離間することにより、図１の二点鎖線で示すように、交差していない状態とすることが可能である。 As shown in FIG. 3A, one side wall 26a has a portion extending downward via a bent portion 26d bent toward the other side wall side, and the portion and the other side wall The brace member 30 is oscillatingly supported between the side walls 26a. On the contrary, the brace member 40 has a portion in which the other side wall 26a extends downward through a bent portion (not shown) that is bent toward the one side wall side, and the brace member 40 has a portion that extends downward. It is pivotally supported between the side walls 26a. Since the upper ends of the brace members 30 and 40 are arranged as described above and are pivotally supported so as to be swingable, the brace members 30 and 40 are offset so as not to interfere with each other and can intersect with each other. ing. Further, the brace members 30 and 40 swing the lower end of the brace member 30 in the clockwise direction and the brace member 40 in the counterclockwise direction from the state where the central portions intersect with each other as shown in FIG. Then, the lower ends of the two ends approach each other and then separate from each other, so that they do not intersect with each other as shown by the alternate long and short dash line in FIG.

図１、図２に示すように、筋交い部材３０、４０の下端には、第２取付部３１、５１がそれぞれ設けられている。第２取付部３１、５１は、左右方向で見た状態で、左右反転すると同一構成となるため、以下では、第２取付部３１について説明する。そして、第２取付部５１において、第２取付部３１を構成する各部材と同一構成には、同一符号を付して、その説明を省略する。 As shown in FIGS. 1 and 2, second attachment portions 31 and 51 are provided at the lower ends of the brace members 30 and 40, respectively. The second mounting portions 31 and 51 have the same configuration when they are flipped horizontally when viewed in the left-right direction. Therefore, the second mounting portions 31 will be described below. Then, in the second mounting portion 51, the same reference numerals are given to the same configurations as the members constituting the second mounting portion 31, and the description thereof will be omitted.

図４〜図７に示すように、第２取付部３１は、連結本体部３２を有している。連結本体部３２は、金属製であって、一対の側壁３２ａと、両側壁３２ａを連結する連結壁３２ｂとを備えていて、上下方向に延出されているとともに、横断面コ字状に形成されている。各側壁３２ａは、筋交い部材３０の下端外周面に対して挟むように配置されて溶接等により一体に固定されている。 As shown in FIGS. 4 to 7, the second mounting portion 31 has a connecting main body portion 32. The connecting main body 32 is made of metal and includes a pair of side walls 32a and a connecting wall 32b connecting both side walls 32a, which extends in the vertical direction and is formed in a U-shaped cross section. Has been done. Each side wall 32a is arranged so as to be sandwiched with respect to the outer peripheral surface of the lower end of the brace member 30, and is integrally fixed by welding or the like.

図４〜図７に示すように、両側壁３２ａ及び連結壁３２ｂにおいて上下方向の中央部は、切欠部３２ｃが形成されている。図２に示すように、切欠部３２ｃは、足場支柱１２０のクサビ受け１２２が嵌合可能となっている。 As shown in FIGS. 4 to 7, a notch 32c is formed in the central portion in the vertical direction of the side wall 32a and the connecting wall 32b. As shown in FIG. 2, the notch portion 32c can be fitted with the wedge receiver 122 of the scaffolding column 120.

ここでクサビ受け１２２について説明する。クサビ受け１２２は、足場支柱１２０の外周面の４方において、それぞれ上下方向に、所定ピッチで複数個配置されている。
各クサビ受け１２２は、足場支柱１２０に一体に基端が固定された一対の側壁１２３と、側壁１２３の先端間を連結する連結壁１２４とにより横断面がコ字状に形成されている。クサビ受け１２２は、一対の側壁１２３、連結壁１２４及び足場支柱１２０で囲まれた穴部１２５を有している。連結壁１２４は、下方へ行くほど、足場支柱１２０の外周面に接近するように斜状に配置されている。そして、図６に示すように、前記切欠部３２ｃに対して、クサビ受け１２２が嵌入された際に、連結壁１２４の外側面に合致するように一方の側壁３２ａの切欠縁部が斜状に形成されている。なお、図５に示すように、他方の側壁３２ａには、切欠部３２ｃの外方の一部を覆うようにガイド部３２ｄが突出されていて、クサビ受け１２２が切欠部３２ｃに対して外方から嵌入する際に、クサビ受け１２２の側壁１２３の外面に摺接することにより、その嵌入を外方からガイドする。 Here, the wedge receiving 122 will be described. A plurality of wedge receivers 122 are arranged in the vertical direction at a predetermined pitch on each of the four sides of the outer peripheral surface of the scaffolding column 120.
Each wedge receiving 122 has a U-shaped cross section formed by a pair of side walls 123 whose base ends are integrally fixed to the scaffolding column 120 and a connecting wall 124 that connects the tips of the side walls 123. The wedge receiver 122 has a pair of side walls 123, a connecting wall 124, and a hole 125 surrounded by a scaffolding column 120. The connecting wall 124 is arranged obliquely so as to approach the outer peripheral surface of the scaffolding column 120 as it goes downward. Then, as shown in FIG. 6, when the wedge receiver 122 is fitted into the notch 32c, the notch edge of one side wall 32a is oblique so as to match the outer surface of the connecting wall 124. Has been formed. As shown in FIG. 5, a guide portion 32d is projected from the other side wall 32a so as to cover a part of the outside of the notch portion 32c, and the wedge receiving 122 is outward with respect to the notch portion 32c. When fitting from the outside, the fitting is guided from the outside by sliding contact with the outer surface of the side wall 123 of the wedge receiving 122.

連結本体部３２の話しに戻して、また、図４〜図７に示すように、両側壁３２ａの上部間には掛止ピン３３が架設されている。また、両側壁３２ａの下部間には掛止ピン３４が架設されている。掛止ピン３４は、掛止ピン３３よりも反筋交い部材３０側にオフセットして配置されている。また、両側壁３２ａ及び連結壁３２ｂで囲まれた空間は、上下方向に貫通した挿入孔３５となっている。 Returning to the discussion of the connecting main body 32, as shown in FIGS. 4 to 7, a hook pin 33 is erected between the upper portions of the side wall 32a. Further, a hook pin 34 is erected between the lower portions of the side wall 32a. The hook pin 34 is offset from the hook pin 33 toward the anti-bracing member 30 side. Further, the space surrounded by the side wall 32a and the connecting wall 32b is an insertion hole 35 penetrating in the vertical direction.

図５〜図７に示すように、連結本体部３２の挿入孔３５には、楔体３６が上下動自在に挿入されている。楔体３６は、上端が相互に連結された本体３７と楔部３８とを有していて全体が二股状に形成されている。本体３７は、略四角柱状をなしていて、上下方向に延出されており、略中央部から下端までは、図４、図６の左右方向において、左右幅が広く形成された錘部３９となっており、また、中央部よりも上方部位は、左右幅が狭く形成されている。 As shown in FIGS. 5 to 7, the wedge body 36 is vertically movably inserted into the insertion hole 35 of the connecting main body 32. The wedge body 36 has a main body 37 and a wedge portion 38 whose upper ends are connected to each other, and is formed in a bifurcated shape as a whole. The main body 37 has a substantially square columnar shape and extends in the vertical direction, and from the substantially central portion to the lower end, the weight portion 39 having a wide left-right width in the left-right directions of FIGS. In addition, the left-right width is narrowly formed in the portion above the central portion.

この左右の幅の相違により、本体３７において、筋交い部材３０側に向かう側面３７ｂの境界部には、段差３７ｃが形成されている。図６に示すように、また、本体３７の楔部３８との連結部位を除く、楔部３８側の側面３７ａは、上下方向において面一となっている。また、本体３７の側面３７ａにおいて、下端には係止段部４２が形成されている。 Due to this difference in width between the left and right sides, a step 37c is formed at the boundary of the side surface 37b facing the brace member 30 side in the main body 37. As shown in FIG. 6, the side surface 37a on the wedge portion 38 side, excluding the connecting portion of the main body 37 with the wedge portion 38, is flush with each other in the vertical direction. Further, on the side surface 37a of the main body 37, a locking step portion 42 is formed at the lower end.

図７に示すように本体３７は、掛止ピン３３、３４の間に上下動自在に挿入されている。そして、本体３７は、掛止ピン３４に対して係止段部４２が上方から係止されると、掛止ピン３３に対して下方から段差３７ｃが当接されて掛止ピン３３側に傾いた状態にすることが可能となっている。上記のように掛止ピン３３、３４に対して、段差３７ｃ及び係止段部４２が当接した状態を、以下では、「楔体３６の待機状態」という。 As shown in FIG. 7, the main body 37 is inserted between the hook pins 33 and 34 so as to be vertically movable. Then, when the locking step portion 42 is locked to the hook pin 34 from above, the main body 37 is inclined toward the hook pin 33 by abutting the step 37c with respect to the hook pin 33 from below. It is possible to put it in a state of being. The state in which the step 37c and the locking step portion 42 are in contact with the hooking pins 33 and 34 as described above is hereinafter referred to as a “standby state of the wedge body 36”.

図６及び図７に示すように、楔部３８は、本体３７に対して反筋交い部材３０側に配置されていて、横断面が四角形状を有するとともに、先端が本体３７と略平行に下方に延出されている。楔部３８において、本体３７の側面３７ａと対向する側面３８ａは、下方へ行くほど側面３７ａから離間するようにテーパ面となっている。楔部３８において、反本体３７の側面３８ｂは、本体３７の側面３７ａと平行な平面となっている。 As shown in FIGS. 6 and 7, the wedge portion 38 is arranged on the side of the anti-bracing member 30 with respect to the main body 37, has a square cross section, and has a tip substantially parallel to the main body 37 downward. It has been postponed. In the wedge portion 38, the side surface 38a facing the side surface 37a of the main body 37 is tapered so as to be separated from the side surface 37a as it goes downward. In the wedge portion 38, the side surface 38b of the anti-main body 37 is a flat surface parallel to the side surface 37a of the main body 37.

図６に示すように、連結本体部３２の切欠部３２ｃに足場支柱１２０のクサビ受け１２２が嵌合した状態であって、楔体３６の待機状態では、楔部３８は、切欠部３２ｃの直上方に位置するように本体３７に対して形成されている。 As shown in FIG. 6, in a state where the wedge receiver 122 of the scaffolding support 120 is fitted to the cutout portion 32c of the connecting main body portion 32, and in the standby state of the wedge body 36, the wedge portion 38 is directly connected to the notch portion 32c. It is formed with respect to the main body 37 so as to be located above.

また、図７に示すように、待機状態の楔体３６において、掛止ピン３４から係止段部４２の掛止が解除されて、錘部３９等を含む楔体３６が自重により下方へ移動すると、楔部３８は、クサビ受け１２２の穴部１２５内に侵入するようにされている。そして、楔部３８は、連結壁３２ｂの上部及び下部の内面による規制を受けて連結壁１２４をその側面３８ａにより楔効果で押圧して、両側壁３２ａの切欠縁部との間で、連結壁１２４を挟着するようにされている。この状態を、以下、「楔体３６による保持状態」という。 Further, as shown in FIG. 7, in the wedge body 36 in the standby state, the locking step portion 42 is released from the hooking pin 34, and the wedge body 36 including the weight portion 39 and the like moves downward due to its own weight. Then, the wedge portion 38 is adapted to enter the hole portion 125 of the wedge receiving 122. Then, the wedge portion 38 is regulated by the inner surfaces of the upper and lower portions of the connecting wall 32b and presses the connecting wall 124 by the side surface 38a by the wedge effect, and the connecting wall 38 is connected to the notched edges of the both side walls 32a. It is designed to sandwich 124. This state is hereinafter referred to as "holding state by the wedge body 36".

また、楔体３６の保持状態から、楔体３６の待機状態へ遷移する場合は、前記楔体３６の待機状態から保持状態への遷移時の操作方向とは逆方向へ、楔体３６を操作すればよい。 Further, when transitioning from the holding state of the wedge body 36 to the standby state of the wedge body 36, the wedge body 36 is operated in the direction opposite to the operation direction at the time of transition from the standby state of the wedge body 36 to the holding state. do it.

図１、図２、図８（ａ）及び図８（ｂ）に示すように、手摺り筋交い１０が、足場支柱１２０に取り付けられた状態において、筋交い部材３０、４０の相互に相対する部位を交差する部位とすると、該交差する部位よりも下方部位には、それぞれ一対の突出片５０、６０が溶接等により一体に固定されている。本実施形態では、前記下方部位は、交差する部位の直近部位としている。なお、突出片５０、６０の筋交い部材３０、４０の固定は、溶接に限定するものではなく、接着、螺子着等によって行ってもよい。手摺り筋交い１０が、足場支柱１２０に取り付けられた状態では、筋交い部材３０、４０は、互いに中央部で交差して配置される。 As shown in FIGS. 1, 2, 8 (a) and 8 (b), in a state where the handrail brace 10 is attached to the scaffolding support 120, the portions of the brace members 30 and 40 facing each other are As for the intersecting portions, a pair of projecting pieces 50 and 60 are integrally fixed to the portions below the intersecting portions by welding or the like, respectively. In the present embodiment, the lower portion is the nearest portion of the intersecting portion. The fixing of the brace members 30 and 40 of the protruding pieces 50 and 60 is not limited to welding, and may be performed by adhesion, screwing or the like. In the state where the handrail brace 10 is attached to the scaffolding column 120, the brace members 30 and 40 are arranged so as to intersect each other at the central portion.

この状態で、図８（ａ）及び図８（ｂ）に示すように、筋交い部材３０に設けられた突出片５０は、筋交い部材４０が下方へ湾曲しようとする際に、その筋交い部材４０の予想される湾曲軌跡を含む仮想平面に対して直交方向を含む交差する方向へ突出されている。この突出片５０の突出量は、相対的に筋交い部材４０に係止して、筋交い部材３０、または筋交い部材４０の湾曲を抑制できる長さであればよく、必要以上に長くしないことが好ましい。ただし、突出片６０の突出量は一対の足場支柱への取り付けられていない場合は、両筋交い部材３０、４０が相互に離間する方向に移動した際に、突出片５０との係止を解除して各筋交い部材３０、４０の揺動を許容する量としている。 In this state, as shown in FIGS. 8A and 8B, the protruding piece 50 provided on the brace member 30 is a brace member 40 when the brace member 40 tries to bend downward. It protrudes in the intersecting direction including the orthogonal direction with respect to the virtual plane containing the expected bending locus. The amount of protrusion of the protruding piece 50 may be a length that can be relatively locked to the brace member 40 and suppress the bending of the brace member 30 or the brace member 40, and is preferably not longer than necessary. However, if the protruding amount of the protruding piece 60 is not attached to the pair of scaffolding columns, the lock with the protruding piece 50 is released when the two brace members 30 and 40 move in a direction in which they are separated from each other. The amount is set so that the swinging of the brace members 30 and 40 is allowed.

これにより、筋交い部材４０が下方へ湾曲しようとする際に、筋交い部材４０は突出片５０と干渉して、同方向への湾曲が抑制可能となっている。ここで、突出片５０が直近部位に設けてあるため、筋交い部材４０の下方への湾曲しようとする動きは即座に抑制される。 As a result, when the brace member 40 tries to bend downward, the brace member 40 interferes with the projecting piece 50, and bending in the same direction can be suppressed. Here, since the projecting piece 50 is provided at the nearest portion, the downward bending movement of the brace member 40 is immediately suppressed.

同様に、手摺り筋交い１０が、足場支柱１２０に取り付けられた状態では、逆に、筋交い部材３０が上方へ湾曲しようとする際には、突出片５０が筋交い部材４０に干渉して、同方向への湾曲が抑制可能となっている。ここで、突出片５０が直近部位に設けてあるため、筋交い部材３０の上方への湾曲しようとする動きは即座に抑制される。 Similarly, in the state where the handrail brace 10 is attached to the scaffolding column 120, conversely, when the brace member 30 tries to bend upward, the protruding piece 50 interferes with the brace member 40 and is in the same direction. It is possible to suppress the curvature to. Here, since the projecting piece 50 is provided at the nearest portion, the upward bending movement of the brace member 30 is immediately suppressed.

同様に、手摺り筋交い１０が、足場支柱１２０に取り付けられた状態において、図８（ａ）及び図８（ｂ）に示すように、筋交い部材４０に設けられた突出片６０は、筋交い部材３０が下方へ湾曲しようとする際に、その筋交い部材３０の予想される湾曲軌跡を含む仮想平面に対して直交を含む交差する方向へ突出されている。この突出片６０の突出量は、相対的に筋交い部材３０に係止して、筋交い部材３０、または筋交い部材４０の湾曲を抑制できる長さであればよく、必要以上に長くしないことが好ましい。ただし、突出片６０の突出量は一対の足場支柱への取り付けられていない場合は、両筋交い部材３０、４０が相互に離間する方向に移動した際に、突出片５０との係止を解除して各筋交い部材３０、４０の揺動を許容する量としている。 Similarly, in a state where the handrail brace 10 is attached to the scaffolding column 120, as shown in FIGS. 8A and 8B, the protruding piece 60 provided on the brace member 40 is the brace member 30. Is projected downward, including at right angles to the virtual plane containing the expected bending locus of the brace member 30. The amount of protrusion of the protruding piece 60 may be a length that can be relatively locked to the brace member 30 and suppress the bending of the brace member 30 or the brace member 40, and is preferably not longer than necessary. However, if the protruding amount of the protruding piece 60 is not attached to the pair of scaffolding columns, the lock with the protruding piece 50 is released when the two brace members 30 and 40 move in a direction in which they are separated from each other. The amount is set so that the swinging of the brace members 30 and 40 is allowed.

これにより、筋交い部材３０が下方へ湾曲しようとする際に、突出片６０と干渉して、同方向への湾曲が抑制可能となっている。ここで、突出片６０が直近部位に設けてあるため、筋交い部材３０の下方への湾曲しようとする動きは即座に抑制される。 As a result, when the brace member 30 tries to bend downward, it interferes with the protruding piece 60, and the bending in the same direction can be suppressed. Here, since the projecting piece 60 is provided at the nearest portion, the downward bending movement of the brace member 30 is immediately suppressed.

同様に、手摺り筋交い１０が、足場支柱１２０に取り付けられた状態において、逆に、筋交い部材４０が上方へ湾曲しようとする際には、突出片６０が筋交い部材３０に干渉して、同方向への湾曲が抑制可能となっている。ここで、突出片６０が直近部位に設けてあるため、筋交い部材４０の上方への湾曲しようとする動きは即座に抑制される。 Similarly, in a state where the handrail brace 10 is attached to the scaffolding column 120, conversely, when the brace member 40 tries to bend upward, the protruding piece 60 interferes with the brace member 30 and is in the same direction. It is possible to suppress the curvature to. Here, since the projecting piece 60 is provided at the nearest portion, the upward bending movement of the brace member 40 is immediately suppressed.

また、図８（ａ）及び図８（ｂ）に示すように、突出片５０、６０の先端は、相互に向くようにＬ字状に屈曲形成された屈曲部５２、６２を有している。この屈曲部５２、６２を有して、離間方向に移動しようとする際、相互に係止可能としている。このことにより、筋交い部材３０、４０が、上下及び左右方向と直交する方向、すなわち、離間方向へ湾曲しようとする場合は、相互に係止して、筋交い部材３０、４０の離間方向への湾曲を抑制可能となっている。本実施形態では突出片５０、６０は係止部に相当する。 Further, as shown in FIGS. 8 (a) and 8 (b), the tips of the projecting pieces 50 and 60 have bent portions 52 and 62 formed in an L shape so as to face each other. .. The bent portions 52 and 62 are allowed to be locked to each other when they are going to move in the separating direction. As a result, when the brace members 30 and 40 try to bend in the direction orthogonal to the vertical and horizontal directions, that is, in the separation direction, they are locked with each other and the brace members 30 and 40 bend in the separation direction. Can be suppressed. In the present embodiment, the protruding pieces 50 and 60 correspond to the locking portions.

（第１実施形態の作用）
上記のように構成された手摺り筋交い１０の作用について説明する。
＜取付けについて＞
本実施形態の手摺り筋交い１０は、図１３で説明した従来例２と同様の方法で、足場支柱１２０に取り付ける。具体的には手摺り筋交い１０を足場支柱１２０に取付ける場合、作業者は図１の二点鎖線で示すように、筋交い部材３０、４０を拡げて交差させない状態で、両筋交い部材３０、４０を把持し、上方へ手摺り筋交い１０を挙げる。なお、この場合、筋交い部材３０、４０を図８（ａ）に示すように足場側及び反足場側の揺動させて相互に離間させて突出片６０、５０との干渉を回避する。 (Operation of the first embodiment)
The operation of the handrail brace 10 configured as described above will be described.
<About installation>
The handrail brace 10 of the present embodiment is attached to the scaffolding column 120 in the same manner as in the conventional example 2 described with reference to FIG. Specifically, when the handrail brace 10 is attached to the scaffolding column 120, as shown by the alternate long and short dash line in FIG. 1, the operator spreads the brace members 30 and 40 and does not intersect the brace members 30 and 40. Grasp and raise the handrail brace 10 upwards. In this case, as shown in FIG. 8A, the brace members 30 and 40 are swung on the scaffolding side and the anti-scaffolding side so as to be separated from each other to avoid interference with the protruding pieces 60 and 50.

そして、図２、図９に示すように、まず、手摺り部材２０の第１取付部２４、２５の挿入部２７を、足場支柱１２０の外周面のクサビ受け１２２の穴部１２５に挿入係止する。その後、筋交い部材３０、４０の下端部に設けられた第２取付部３１、５１において、図６に示すように予め待機状態にしていた楔体３６の楔部３８を図７に示すようにクサビ受け１２２の穴部１２５内に侵入させて、楔体３６による保持状態とする。このように、手摺り筋交い１０の筋交い部材３０、４０は、揺動自在となっているため、筋交い部材３０、４０を上下方向に沿うように移動すれば、全体の上下高さは、高くなり、手摺り筋交い１０では、手摺り筋交いの足場支柱１２０に対する取付け、及び取り外しの作業は、手をそれほど挙げなくても操作できる。 Then, as shown in FIGS. 2 and 9, first, the insertion portions 27 of the first mounting portions 24 and 25 of the handrail member 20 are inserted and locked into the hole portion 125 of the wedge receiving 122 on the outer peripheral surface of the scaffolding column 120. To do. After that, in the second attachment portions 31 and 51 provided at the lower end portions of the brace members 30 and 40, the wedge portion 38 of the wedge body 36 which had been in the standby state in advance as shown in FIG. 6 is wedged as shown in FIG. It is allowed to penetrate into the hole 125 of the receiver 122 so as to be held by the wedge body 36. In this way, since the brace members 30 and 40 of the handrail brace 10 are swingable, if the brace members 30 and 40 are moved along the vertical direction, the overall vertical height becomes higher. In the handrail brace 10, the work of attaching and detaching the handrail brace to the scaffolding column 120 can be operated without raising the hand so much.

＜湾曲抑制について＞
また、上記のように足場支柱１２０に取り付けられた手摺り筋交い１０は、筋交い部材３０、４０が互いに中央部で交差して配置され、突出片５０、６０は筋交い部材３０、４０の交差する部位の下方部位である直近部位に配置されている。この状態で、足場支柱１２０に横荷重が加わった場合、筋交い部材３０、４０のいずれか一方の筋交い部材には、圧縮の力が働き、他方の筋交い部材には引張りの力が働く。 <About bending suppression>
Further, in the handrail brace 10 attached to the scaffolding column 120 as described above, the brace members 30 and 40 are arranged so as to intersect each other at the central portion, and the protruding pieces 50 and 60 are the intersecting portions of the brace members 30 and 40. It is located in the nearest part, which is the lower part of. When a lateral load is applied to the scaffolding column 120 in this state, a compressive force acts on one of the brace members 30 and 40, and a tensile force acts on the other brace member.

まず、図２、図９において左方から足場支柱１２０に横荷重が加わった場合について説明する。例えば、圧縮の力が働いた一方の筋交い部材３０が下方へ湾曲しようとする。すると、図８（ａ）及び図８（ｂ）に示す突出片６０が、筋交い部材３０と干渉して、筋交い部材３０による同方向への湾曲が抑制される。ここで、突出片６０が直近部位に設けてあるため、筋交い部材３０の下方への湾曲しようとする動きは即座に抑制できる。 First, a case where a lateral load is applied to the scaffolding column 120 from the left in FIGS. 2 and 9 will be described. For example, one brace member 30 on which a compressive force acts tends to bend downward. Then, the protruding piece 60 shown in FIGS. 8A and 8B interferes with the brace member 30, and the bending of the brace member 30 in the same direction is suppressed. Here, since the projecting piece 60 is provided at the nearest portion, the downward bending movement of the brace member 30 can be immediately suppressed.

また、筋交い部材３０が上方へ湾曲しようとすると、図８（ａ）及び図８（ｂ）に示すように突出片５０が筋交い部材４０に干渉して、筋交い部材３０の同方向への湾曲を抑制する。ここで、突出片５０が直近部位に設けてあるため、筋交い部材３０の上方への湾曲しようとする動きは即座に抑制できる。 Further, when the brace member 30 tries to bend upward, the protruding piece 50 interferes with the brace member 40 as shown in FIGS. 8A and 8B, and the brace member 30 bends in the same direction. Suppress. Here, since the projecting piece 50 is provided at the nearest portion, the movement of the brace member 30 to bend upward can be immediately suppressed.

また、筋交い部材３０が、上下及び左右方向と直交する方向、すなわち、離間方向に移動、すなわち、湾曲しようとする場合は、突出片５０、６０の屈曲部５２、６２が、相互に係止して、筋交い部材３０の筋交い部材４０からの離間方向への湾曲を抑制する。 Further, when the brace member 30 moves in a direction orthogonal to the vertical and horizontal directions, that is, in a separating direction, that is, intends to bend, the bent portions 52, 62 of the protruding pieces 50, 60 are locked to each other. Therefore, the bending of the brace member 30 in the direction away from the brace member 40 is suppressed.

なお、筋交い部材３０が、上下及び左右方向と直交する方向、すなわち、接近方向に移動、すなわち、湾曲しようとする場合は、筋交い部材３０は筋交い部材４０に係止されて、その湾曲が抑制される。 When the brace member 30 moves in a direction orthogonal to the vertical and horizontal directions, that is, in an approaching direction, that is, tries to bend, the brace member 30 is locked to the brace member 40 and its bending is suppressed. Orthogonal.

次に、図２、図９において右方から足場支柱１２０に横荷重が加わった場合について説明する。例えば、圧縮の力が働いた一方の筋交い部材４０が、下方へ湾曲しようとすると、図８（ａ）及び図８（ｂ）に示す突出片５０が、筋交い部材４０と干渉して、筋交い部材４０による同方向への湾曲が抑制される。ここで、突出片５０が直近部位に設けてあるため、筋交い部材４０の下方への湾曲しようとする動きは即座に抑制できる。 Next, a case where a lateral load is applied to the scaffolding column 120 from the right side in FIGS. 2 and 9 will be described. For example, when one of the brace members 40 on which the compressive force acts tries to bend downward, the protruding piece 50 shown in FIGS. 8A and 8B interferes with the brace member 40, and the brace member 40 interferes with the brace member 40. Curving in the same direction by 40 is suppressed. Here, since the projecting piece 50 is provided at the nearest portion, the downward bending movement of the brace member 40 can be immediately suppressed.

また、筋交い部材４０が上方へ湾曲しようとすると、図８（ａ）及び図８（ｂ）に示すように突出片６０が筋交い部材３０に干渉して、筋交い部材４０の同方向への湾曲を抑制する。ここで、突出片６０が直近部位に設けてあるため、筋交い部材４０の上方への湾曲しようとする動きは即座に抑制できる。 Further, when the brace member 40 tries to bend upward, the protruding piece 60 interferes with the brace member 30 as shown in FIGS. 8A and 8B, and the brace member 40 bends in the same direction. Suppress. Here, since the projecting piece 60 is provided at the nearest portion, the movement of the brace member 40 to bend upward can be immediately suppressed.

また、筋交い部材４０が、上下及び左右方向と直交する方向、すなわち、離間方向に移動、すなわち、湾曲しようとする場合は、突出片５０、６０の屈曲部５２、６２が、相互に係止して、筋交い部材３０の筋交い部材４０からの離間方向への湾曲を抑制する。 Further, when the brace member 40 moves in a direction orthogonal to the vertical and horizontal directions, that is, in a separating direction, that is, intends to bend, the bent portions 52, 62 of the protruding pieces 50, 60 are locked to each other. Therefore, the bending of the brace member 30 in the direction away from the brace member 40 is suppressed.

なお、筋交い部材４０が、上下及び左右方向と直交する方向、すなわち、接近方向に移動、すなわち、湾曲しようとする場合は、筋交い部材４０は筋交い部材３０に係止されて、その湾曲が抑制される。 When the brace member 40 moves in a direction orthogonal to the vertical and horizontal directions, that is, in an approaching direction, that is, tries to bend, the brace member 40 is locked to the brace member 30 and its bending is suppressed. Orthogonal.

本実施形態では、下記の特徴を有する。
（１）本実施形態の手摺り筋交い１０は、各筋交い部材３０、４０の相互に交差する部位の下方部位には、一対の足場支柱１２０に第２取付部３１、５１が取り付けられた際、相互に交差する他の筋交い部材の上動、または下動を規制する突出片５０、６０がそれぞれ突出して配置されている。また、突出片５０、６０の突出量は、前記一対の足場支柱に取付けられていない場合は、両筋交い部材３０、４０が相互に離間する方向に移動した際に、突出片５０、６０の係止を解除して各筋交い部材３０、４０の揺動を許容する量としている。 The present embodiment has the following features.
(1) In the handrail brace 10 of the present embodiment, when the second attachment portions 31 and 51 are attached to the pair of scaffolding columns 120 at the lower portion of the mutually intersecting portions of the brace members 30 and 40, Projecting pieces 50 and 60 that regulate the upward or downward movement of other bracing members that intersect each other are arranged so as to project. Further, when the protruding pieces 50 and 60 are not attached to the pair of scaffolding columns, the protruding pieces 50 and 60 are engaged when the two brace members 30 and 40 move in a direction in which they are separated from each other. The amount is set to allow the swinging of the brace members 30 and 40 by releasing the stop.

この結果、手摺先行工法により、手摺り筋交いを足場部材に対して取り付ける場合は、一対の足場支柱への取り付けられていない状態では、両筋交い部材が相互に離間する方向に移動した際に、係止部の突出量が抑制されていて、係止部の係止の解除ができるため、各筋交い部材の揺動を許容する。このため、各筋交い部材を揺動操作して、その手摺り筋交いの上下高さを高くした状態で、作業者が各筋交い部材を把持して、作業者の手をそれほど挙げなくても操作できることから、手摺先行工法を楽な姿勢で行える。さらに、手摺り筋交いの両端が一対の足場支柱に取り付けられた状態において、足場支柱に横荷重が加わって、相互に交差する他の筋交い部材の上動、または下動をしようとしても一方の係止部が、その上動、または下動を規制できる。 As a result, when the handrail brace is attached to the scaffolding member by the handrail preceding method, when the two brace members move in the direction of being separated from each other in the state where they are not attached to the pair of scaffolding columns, they are engaged. Since the amount of protrusion of the stop portion is suppressed and the locking portion can be released, the swing of each brace member is allowed. Therefore, the operator can grasp each brace member in a state where the vertical height of the handrail brace is increased by swinging each brace member, and the operator can operate the brace member without raising his / her hand so much. Therefore, the handrail precedent construction method can be performed in a comfortable posture. Further, in a state where both ends of the handrail brace are attached to a pair of scaffolding struts, even if a lateral load is applied to the scaffolding struts and an attempt is made to move the other struts that intersect each other up or down, one of them is engaged. The stop can regulate its up or down movement.

（２）本実施形態の突出片５０、６０は、一対の筋交い部材３０、４０が相互に離間方向へ移動しようとする際、相互に係止可能に配置されている。上記構成により、両筋交い部材が、相互に離間する方向に湾曲しようとしても、一方の突出片が、他方の突出片に係止してその方向への湾曲を抑制できる。 (2) The projecting pieces 50 and 60 of the present embodiment are arranged so as to be able to be locked with each other when the pair of bracing members 30 and 40 try to move in the direction of separation from each other. With the above configuration, even if the two brace members try to bend in a direction in which they are separated from each other, one protruding piece can be locked to the other protruding piece and the bending in that direction can be suppressed.

（３）本実施形態の手摺り筋交い１０は、下方部位として各筋交い部材の相互に交差する部位の直近部位としている。この結果、突出片５０、６０が設けられた部位を各筋交い部材の相互に交差する部位の直近部位とすることにより、該直近部位に設けられた突出片５０、６０が、相互に交差する他の筋交い部材の上動、または下動を即座に規制できる。 (3) The handrail brace 10 of the present embodiment is a lower portion that is closest to a portion of each brace member that intersects with each other. As a result, by setting the portion where the protruding pieces 50 and 60 are provided as the nearest portion of the portion where the brace members intersect with each other, the protruding pieces 50 and 60 provided at the nearest portion intersect with each other. The up or down movement of the brace member can be immediately regulated.

（４）本実施形態の手摺り筋交い１０は、係止部として、突出片としている。この結果、突出片により、相互に交差する他の筋交い部材の上動、または下動を規制できる。
（５）本実施形態の手摺り筋交い１０の手摺り部材２０、及び筋交い部材３０、４０は、パイプにより構成されている。この結果、パイプによる手摺り部材及び筋交い部材３０、４０であっても、上記の作用を容易に実現できる。 (4) The handrail brace 10 of the present embodiment is a protruding piece as a locking portion. As a result, the protruding pieces can regulate the upward or downward movement of other bracing members that intersect each other.
(5) The handrail member 20 and the brace members 30 and 40 of the handrail brace 10 of the present embodiment are composed of pipes. As a result, the above operation can be easily realized even with the handrail members and the brace members 30 and 40 using pipes.

（第２実施形態）
次に第２実施形態を図１０（ａ）及び図１０（ｂ）を参照して説明する。
本実施形態の手摺り筋交い１０は、第１実施形態の手摺り筋交い１０の構成中、突出片５０、６０の筋交い部材３０、４０に対する固定された部位が異なるだけであり、他の構成は、同じのため説明を省略し、異なる構成について説明する。 (Second Embodiment)
Next, the second embodiment will be described with reference to FIGS. 10 (a) and 10 (b).
The handrail brace 10 of the present embodiment differs from the configuration of the handrail brace 10 of the first embodiment only in the portion fixed to the brace members 30 and 40 of the protruding pieces 50 and 60, and the other configurations are different. Since they are the same, the description is omitted, and different configurations will be described.

本実施形態では、手摺り筋交い１０が、足場支柱１２０に取り付けられた状態において、図１０（ａ）及び図１０（ｂ）に示すように、筋交い部材３０、４０の相互に相対する部位を交差する部位とすると、該交差する部位よりも上方部位には、それぞれ一対の突出片５０、６０が溶接等により一体に固定されている。本実施形態では、前記上方部位は、交差する部位の直近部位としている。 In the present embodiment, when the handrail brace 10 is attached to the scaffolding column 120, as shown in FIGS. 10A and 10B, the brace members 30 and 40 intersect each other's portions. A pair of projecting pieces 50 and 60 are integrally fixed to a portion above the intersecting portion by welding or the like. In the present embodiment, the upper portion is the nearest portion of the intersecting portion.

手摺り筋交い１０が、足場支柱１２０に取り付けられた状態では、筋交い部材３０、４０は、互いに中央部で交差して配置される。
この状態で、図１０（ａ）及び図１０（ｂ）に示すように、筋交い部材３０に設けられた突出片５０は、筋交い部材４０が上方へ湾曲しようとする際に、その筋交い部材４０の予想される湾曲軌跡を含む仮想平面に対して直交方向を含む交差する方向へ突出されている。これにより、筋交い部材４０が上方へ湾曲しようとする際に、筋交い部材４０は突出片５０と干渉して、同方向への湾曲が抑制可能となっている。ここで、突出片５０が直近部位に設けてあるため、筋交い部材４０の下方への湾曲しようとする動きは即座に抑制される。 In the state where the handrail brace 10 is attached to the scaffolding column 120, the brace members 30 and 40 are arranged so as to intersect each other at the central portion.
In this state, as shown in FIGS. 10A and 10B, the protruding piece 50 provided on the brace member 30 is a brace member 40 when the brace member 40 tries to bend upward. It protrudes in the intersecting direction including the orthogonal direction with respect to the virtual plane containing the expected bending locus. As a result, when the brace member 40 tries to bend upward, the brace member 40 interferes with the projecting piece 50, and bending in the same direction can be suppressed. Here, since the projecting piece 50 is provided at the nearest portion, the downward bending movement of the brace member 40 is immediately suppressed.

逆に、筋交い部材４０が下方へ湾曲しようとする際には、突出片６０が筋交い部材３０に干渉して、同方向への湾曲が抑制可能となっている。ここで、突出片６０が直近部位に設けてあるため、筋交い部材４０の上方への湾曲しようとする動きは即座に抑制される。 On the contrary, when the brace member 40 tries to bend downward, the protruding piece 60 interferes with the brace member 30 and the bending in the same direction can be suppressed. Here, since the projecting piece 60 is provided at the nearest portion, the upward bending movement of the brace member 40 is immediately suppressed.

一方、図１０（ａ）及び図１０（ｂ）に示すように、筋交い部材４０に設けられた突出片６０は、筋交い部材３０が上方へ湾曲しようとする際に、その筋交い部材３０の予想される湾曲軌跡を含む仮想平面に対して直交を含む交差する方向へ突出されている。これにより、筋交い部材３０が上方へ湾曲しようとする際に、突出片６０と干渉して、同方向への湾曲が抑制可能となっている。ここで、突出片６０が直近部位に設けてあるため、筋交い部材３０の上方への湾曲しようとする動きは即座に抑制される。 On the other hand, as shown in FIGS. 10A and 10B, the protruding piece 60 provided on the brace member 40 is expected to be the brace member 30 when the brace member 30 tries to bend upward. It protrudes in the direction of intersection including orthogonality with respect to the virtual plane containing the curved locus. As a result, when the brace member 30 tries to bend upward, it interferes with the protruding piece 60, and the bending in the same direction can be suppressed. Here, since the projecting piece 60 is provided at the nearest portion, the upward bending movement of the brace member 30 is immediately suppressed.

逆に、筋交い部材３０が下方へ湾曲しようとする際には、突出片５０が筋交い部材４０に干渉して、同方向への湾曲が抑制可能となっている。ここで、突出片５０が直近部位に設けてあるため、筋交い部材３０の下方への湾曲しようとする動きは即座に抑制される。上記の手摺り筋交い１０の足場支柱１２０への手摺先行工法による組み付け、第１実施形態と同様であるため、説明を省略する。 On the contrary, when the brace member 30 tries to bend downward, the protruding piece 50 interferes with the brace member 40, and the bending in the same direction can be suppressed. Here, since the projecting piece 50 is provided at the nearest portion, the downward bending movement of the brace member 30 is immediately suppressed. Assembling to the scaffolding column 120 of the handrail brace 10 by the handrail preceding method is the same as that of the first embodiment, and thus the description thereof will be omitted.

また、上記の手摺り筋交い１０においても、上記のように足場支柱に取付後において、足場支柱に横荷重が加わった場合、一方の筋交い部材の湾曲を抑制できる。
本実施形態は、以下のように変更して実施することができる。 Further, also in the above-mentioned handrail brace 10, when a lateral load is applied to the scaffolding strut after being attached to the scaffolding strut as described above, the bending of one of the brace members can be suppressed.
This embodiment can be modified and implemented as follows.

本実施形態及び以下の変更例は、技術的に矛盾しない範囲で互いに組み合わせて実施することができる。
・前記実施形態では、直線部２１の両端に湾曲部２２、２３を有していたが、省略してもよい。 The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
-In the above embodiment, the curved portions 22 and 23 are provided at both ends of the straight portion 21, but they may be omitted.

・前記実施形態では、前記下方部位又は上方部位は、交差する部位の直近部位としたが、直近部位に限定するものではなく、直近部位よりも離間した部位であってもよい。この場合、筋交い部材３０、４０の上方または下方へ湾曲しようとする動きは即座ではないが、筋交い部材３０、４０の上方または下方へ湾曲を抑制することができる。 -In the above embodiment, the lower part or the upper part is the nearest part of the intersecting part, but the part is not limited to the nearest part and may be a part separated from the nearest part. In this case, the movement of the brace members 30 and 40 to bend upward or downward is not immediate, but the bending of the brace members 30 and 40 upward or downward can be suppressed.

・突出片５０、６０の屈曲部５２、６２を省略してもよい、この場合、突出片５０、６０が、筋交い部材３０、４０が離間方向に湾曲しようとする際、一方の突出片の予想される移動軌跡上に位置するように他方の突出片の突出量を設定すればよい。 The bent portions 52 and 62 of the protruding pieces 50 and 60 may be omitted. In this case, when the protruding pieces 50 and 60 try to bend the brace members 30 and 40 in the separation direction, one of the protruding pieces is predicted. The amount of protrusion of the other protruding piece may be set so as to be located on the moving locus.

・前記実施形態では、係止部を突出片５０、６０としたが、突出片に限定するものではなく、他の形状であって、筋交い部材３０、４０の湾曲しようとする際に、その予想される湾曲軌跡を含む仮想平面に干渉するものであれば、形状は限定されない。 -In the above-described embodiment, the locking portion is set to the protruding pieces 50 and 60, but the locking portion is not limited to the protruding pieces, and it is expected to have another shape when the bracing members 30 and 40 are to be curved. The shape is not limited as long as it interferes with the virtual plane including the curved locus to be formed.

・手摺り部材２０、及び筋交い部材３０、４０はパイプに限定するものではなく、棒材等で構成してもよい。 -The handrail member 20 and the brace members 30 and 40 are not limited to pipes, and may be made of a bar or the like.

１０…手摺り筋交い、２０…手摺り部材、２１…直線部、
２２、２３…湾曲部、２４、２５…第１取付部、２６…連結本体部、
２６ａ…側壁、２６ｂ…連結壁、２６ｃ…切欠き部、２６ｄ…屈曲部、
２７…挿入部、２８、２９…軸、３０…筋交い部材、３１…第２取付部、
３２…連結本体部、３２ａ…側壁、３２ｂ…連結壁、３２ｃ…切欠部、
３３、３４…掛止ピン、３５…挿入孔、３６…楔体、３７…本体、
３７ａ、３７ｂ…側面、３７ｃ…段差、３８…楔部、３９…錘部、
４０…筋交い部材、４２…係止段部、５０、６０…突出片、
５１…第２取付部、１００…手摺り筋交い、１０２…斜交材、
１０３…固定ピン、１０４…水平手摺り部材、１０５…固定部材、
１０６…固定ピン、１０７…クサビ部、１０８…手摺り筋交い、
１１０…水平手摺り部材、１１２…筋交い部材、
１２０…足場支柱、１２２…クサビ受け、１２７…クサビ部、
１３０…作業床、１６０…作業者。 10 ... Handrail brace, 20 ... Handrail member, 21 ... Straight part,
22, 23 ... Curved part, 24, 25 ... First mounting part, 26 ... Connecting body part,
26a ... side wall, 26b ... connecting wall, 26c ... notch, 26d ... bent,
27 ... Insertion part, 28, 29 ... Shaft, 30 ... Brace member, 31 ... Second mounting part,
32 ... Connecting body, 32a ... Side wall, 32b ... Connecting wall, 32c ... Notch,
33, 34 ... Hook pin, 35 ... Insert hole, 36 ... Wedge body, 37 ... Main body,
37a, 37b ... side surface, 37c ... step, 38 ... wedge part, 39 ... weight part,
40 ... Brace member, 42 ... Locking step, 50, 60 ... Protruding piece,
51 ... 2nd mounting part, 100 ... Handrail brace, 102 ... Oblique material,
103 ... fixing pin, 104 ... horizontal handrail member, 105 ... fixing member,
106 ... fixing pin, 107 ... wedge part, 108 ... handrail brace,
110 ... Horizontal handrail member, 112 ... Brace member,
120 ... Scaffolding support, 122 ... Wedge receiver, 127 ... Wedge part,
130 ... work floor, 160 ... worker.

Claims

A handrail member having first mounting portions at both ends, and the first mounting portions are mounted on a pair of scaffolding columns and arranged horizontally.
A pair of bracing members whose upper ends are pivotally attached to both ends of the handrail member so as to be swingable, and which has a second attachment portion at the lower end, and the pair of scaffolding columns. In a handrail brace provided with a pair of brace members to which a second brace is attached and arranged intersecting each other.
When the second attachment portion is attached to the pair of scaffolding columns, the upper or lower part of each brace member intersects with each other, and the other brace members intersect with each other. Locking parts that regulate movement are arranged so as to protrude,
When the protruding amount of the locking portion is not attached to the pair of scaffolding columns, the locking of the locking portion is released when the two brace members move in a direction in which they are separated from each other. A handrail brace that allows the swing of the brace member.

The handrail brace according to claim 1, wherein each locking portion is arranged so as to be able to lock each other when a pair of brace members try to move in a direction away from each other.

The handrail brace according to claim 1 or 2, wherein the lower portion or the upper portion is a portion closest to a portion of each brace member that intersects with each other.

The handrail brace according to any one of claims 1 to 3, wherein the locking portion is a protruding piece.

The handrail brace according to any one of claims 1 to 4, wherein the handrail member is composed of a pipe.

The handrail brace according to any one of claims 1 to 5, wherein the brace member is composed of a pipe.