JP4365590B2

JP4365590B2 - Suspension support, duct suspension structure, and duct suspension method

Info

Publication number: JP4365590B2
Application number: JP2003009538A
Authority: JP
Inventors: 雄二早川; 宏桜井; 剛藤井
Original assignee: Takasago Thermal Engineering Co Ltd
Current assignee: Takasago Thermal Engineering Co Ltd
Priority date: 2003-01-17
Filing date: 2003-01-17
Publication date: 2009-11-18
Anticipated expiration: 2023-01-17
Also published as: JP2004218800A

Description

【０００１】
【発明の属する技術分野】
本発明は被支持体をコンクリート面から吊り下げ支持するための吊り下げ支持具に関する。
【０００２】
【従来の技術及び発明が解決しようとする課題】
ビルディング、工場、倉庫、駅舎、その他建造物における空調工事において、空気（新鮮外気、冷気、暖気、排気）を搬送するために重量の大きい亜鉛鉄板製の円形ダクト（スパイラルダクト）が用いられているが、近年、天井吹出し口などに接続する末端のダクトは施工を容易簡略化して工事短縮化を図るため、可とう性に富み、断熱材を装着した軽量のフレキシブルダクトが用いられ、天井のコンクリート面から吊り下げ支持するようにしている。
【０００３】
このようにダクトを天井コンクリート面から吊り下げるには、従来では、ダクトの上面に専用の受台を取付け、この受台と天井コンクリートに固定した係止具間を策条で結んで吊り下げする方法（特許文献１）、ダクトを囲む第１の番線の直線状の長さの異なる両端部を、くの字状に中央を曲げた第１の金属板の上下２つの小穴に挿通して両端部を第１の金属板に固定し、コンクリート面から垂下させた直線状の第２の番線の端部と、前記第１の番線の両端部のうちの片方とを、くの字状に中央を曲げた第２の金属板の上下２つの小穴に上下から貫通させて第２の金属板に第１、第２の番線を固定することによって、ダクトを天井コンクリート面から吊り下げ支持する方法（特許文献２）などがあった。
【０００４】
【特許文献１】
特開平８−２８５３５９号公報（第２頁、図１）
【特許文献２】
実公昭５８−２５１９３号公報（第４頁、第１図）
【０００５】
しかしながら、前者の方法では、ダクトの上面に予め専用の受台を設けなければならないためコスト高となり、また、後者では２つの金属板に上下から番線の端部を挿通しなければならないため作業が煩雑であった。
【０００６】
このため、従来では、インサートを用いてダクトを吊り下げる方法も行われている。
即ち、図９に示すように、天井面を構成するデッキプレート１に穴１ａをあけ、この穴１ａに上側からインサート２を打ち込んでインサート２の下部２ａがデッキプレート１の下側に露呈するようにし、次に、デッキプレート１の上側にコンクリート３を打設する。
【０００７】
コンクリート打設後、インサート２のネジ穴２ｂに下側から吊りボルト４の上端部をネジ込んで固定する。
次に、吊りボルト４の下部にナット５を螺着し、Ｌ形金具６の水平部６ａの取付け穴６ｂを通し、さらに下側からもう１つナット７を螺着して２つのナット５、７によってＬ形金具６を吊りボルト４の下部に固定する。
【０００８】
次に、フレキシブルダクト８を包持させた吊りバンド９の両端９ａ、９ｂの穴１０ａ、１０ｂをＬ形金具６の垂直部６ｃの取付け穴６ｄに合わせてボルト１１をこの取付け穴６ｄに通し、ナット１２によって締め付けて吊りバンド９の両端９ａ、９ｂをＬ形金具６に固定する。
このようにしてフレキシブルダクト８を吊り下げ支持していた。
【０００９】
しかしながら、このような従来の方法では、（イ）インサート２のデッキプレート１の穴１ａへの打込み、（ロ）インサート２への吊りボルト４の取り付け、（ハ）吊りボルト４へのＬ形金具６の２個のナット５、７による取付け、（ニ）Ｌ形金具６への吊りバンド９のボルト１１、ナット１２による取付けという４つの作業が必要で、施工に手間がかかり、多大な時間がかかっていた。
【００１０】
また、フレキシブルダクト８の重量が最大径の物でも１ｍあたり約２Kg程度であるのに、吊りボルト４やＬ形金具６を用いるのは、過剰設計であってコスト高となり、ナットやボルトなどの付属部品も量がかさみ、例えば大型ビルデイングでは無数の箇所にこの施工を行わなければならないため、施工者にとって大変な負担となっていた。
【００１１】
本発明は以上のような問題を解決し、コストも安く施工時間も著しく短縮できるようにした吊り下げ支持具及びダクト吊り下げ構造並びにダクト吊り下げ方法を提供することを目的としている。
【００１２】
【課題を解決するための手段】
前記目的を達成するために、本発明の請求項１の吊り下げ支持具は、
被支持体を吊りバンドで包持してコンクリート面から吊り下げ支持するための吊り下げ支持具であって、
直線部と、前記直線部の上端に設けられた抜け防止曲げ部と、前記直線部の下端に設けられた折り返し部とで構成された弾性を有する細い金属棒状体から成る線状体と、
下側が小径となった柱状の弾性体で、上下に軸心に沿って貫通穴が設けられた嵌合体とから成り、
前記線状体の前記折り返し部の先端が前記直線部に接近あるいは接触した状態にされており、
前記線状体の直線部が前記嵌合体の貫通穴に前記抜け防止曲げ部が前記嵌合体の上端に当接するまで上方から差し込まれた状態で、前記直線部に前記嵌合体が装着され、
デッキプレートにあけられた穴に前記嵌合体を上方から押し込んで該穴の縁部に押圧されて弾性変形した状態ではめ込み、前記デッキプレートの上面にコンクリートを打設して前記抜け防止曲げ部をコンクリート面に埋設して前記デッキプレート面から下方に前記嵌合体の下部、前記直線部及び折り返し部を露出させ、被支持体を包持させた吊りバンドの両端の穴に前記折り返し部の先端を前記線状体の前記直線部から離れるように弾性変形させて挿通して、前記折り返し部の下端部に前記吊りバンドの両端を支持するようにしたことを特徴としている。
【００１４】
また、本発明の請求項２のダクト吊り下げ構造は、
デッキプレートにあけられた穴に、下側が小径の柱状の弾性の嵌合体が上方から押込んで弾性変形した状態ではめ込まれ、
前記嵌合体の上下に軸心に沿って設けられた貫通穴に差し込まれた弾性を有する細い金属棒状体から成る線状体の上端に一体的に設けられ、前記嵌合体の上端に接する抜け防止曲げ部が、前記デッキプレートの上面側において打設されたコンクリート内に埋設され、
前記嵌合体の下部、前記線状体及び前記線状体の下端に一体的に設けられた前記線状体の前記直線部に先端が接近あるいは接触した状態にされた折り返し部が前記デッキプレートの下面側に配され、
ダクトを包持させた吊りバンドの両端の穴に前記折り返し部が前記線状体の前記直線部から離れるように弾性変形させて挿通されて前記吊りバンドの両端が前記折り返し部に保持されたことを特徴とすることを特徴としている。
【００１５】
また、本発明の請求項３のダクト吊り下げ方法は、
デッキプレートを敷設する工程と、
前記デッキプレートにダクトの敷設方向に沿って複数の穴をあける工程と、
直線部と前記直線部の上端に設けられた抜け防止曲げ部と前記直線部の下端に設けられた折り返し部とで構成された弾性を有する細い棒状体から成る線状体と、下側が小径となった柱状の弾性体で上下に軸心に沿って貫通穴が設けられた嵌合体とから成り、前記線状体の前記折り返し部の先端が前記直線部に接近あるいは接触した状態にされており、前記線状体の直線部が前記嵌合体の貫通穴に前記抜け防止曲げ部が前記嵌合体の上端に接するまで上下から差し込まれた状態で前記直線部に前記嵌合体が装着された吊り下げ支持具を用いて、前記デッキプレートの前記穴に上面側から前記嵌合体の下部、前記直線部及び前記折り返し部を前記デッキプレートの下方へと挿通させて前記嵌合体を前記穴に弾性変形した状態ではめ込む工程と、
前記デッキプレートの上面側にコンクリートを打設して、前記抜け防止曲げ部を埋設する工程と、
前記デッキプレートの下方においてダクトを敷設し、吊りバンドを前記ダクトに巻囲し、前記折り返し部を前記線状体の前記直線部から離れるように弾性変形させて前記吊りバンドの両端の穴に挿通させて前記折り返し部に前記吊りバンドを保持させる工程とを備えたことを特徴としている。
【００１６】
このようにしたため、コンクリート打設後に被支持体を包持させた吊りバンドの両端の穴に、前記折り返し部の先端を挿通するだけの極めて簡単な作業で、被支持体を吊り下げ支持することができる。
【００１７】
より具体的には、コンクリート打設後のダクトの敷設は、ダクトを吊り込みながら吊りバンドを巻き回し、所定のバンド長さの位置で前記折り返し部にセットするだけでよいため、作業に著しい進捗がみられる。
【００１８】
【発明の実施の形態】
以下、図面に基づいて本発明の実施の形態を説明する。
図１は本発明の一実施形態の吊り下げ支持具を示している。
【００１９】
図１に示すように、この吊り下げ支持具は、被支持体（例えば空調用フレキシブルダクト）をコンクリート面から吊り下げ支持するためのものであって、線状体２０と嵌合体３０から成る。
【００２０】
線状体２０は断面円形の金属の細い棒体であって、直線部２１と、この直線部２１の上端に設けられた抜け防止曲げ部２２と、直線部２１の下端に設けられた折り返し部２３とで構成されている。
【００２１】
嵌合体３０には、上下に軸心に沿って貫通穴３１が設けられている。従って、折り返し部２３を設ける前に、線状体２０の直線部２１をその下端部からこの貫通穴３１に、抜け防止曲げ部２２が嵌合体３０の上端に当接するまで上方から差し込み、その後、直線部２１の下端を上方へ折り返して折り返し部２３を形成すればよい。
【００２２】
このように構成された吊り下げ支持具は次のように使用する。
まず、図２に示すように、天井面を構成するデッキプレート１に穴１ａをあける。
次に、デッキプレート１の穴１ａに上面側から線状体２０の折り返し部２３及び直線部２１を挿通し、デッキプレート１の穴１ａに嵌合体３０をはめ込む。これにより線状体２０は直立してデッキプレート１にセットされる。
【００２３】
なお、嵌合体３０を下方に向かって径が漸減した切頭円錐形にすれば、穴１ａに嵌合体３０の上下方向の中間部がはまる。
【００２４】
また、嵌合体３０をゴムなどの弾性材で切頭円錐形に作成すれば、上方から穴１ａに押し込むことによって穴１ａの縁部に押圧されて弾性変形して嵌着されるから、穴１ａの寸法に狂いがあっても適合し、コンクリート打設時の水分が穴１ａから下方へ漏れにくいので、線状体２０の錆の発生を防ぐことができる。
【００２５】
次に、デッキプレート１の上面側にコンクリート３を打設して天井を形成する。
このようにして、抜け防止曲げ部２２及び嵌合体３０の上部がコンクリート３内に埋設され、デッキプレート１から下方に垂直方向に嵌合体３０の下部、直線部２１、折り返し部２３が露出した状態になる。
【００２６】
コンクリート養生が済んだ後、図２、図３、図４に示すように、フレキシブルダクト８を包持させた吊りバンド４０の両端４０ａ、４０ｂの穴４１ａ、４１ｂに折り返し部２３の先端を挿通して、折り返し部２３の下端部に吊りバンド４０の両端４０ａ、４０ｂを支持させる。
【００２７】
このように、吊りバンド４０の両端４０ａ、４０ｂの穴４１ａ、４１ｂに折り返し部２３の先端を通すだけの簡単な作業で、フレキシブルダクト８を天井面から吊り下げ支持することができる。
【００２８】
なお、吊りバンド４０の両端４０ａ、４０ｂのうちの少なくとも一方の穴を吊りバンド４０の長手方向に複数設ければ、複数の穴のいずれかを選択して折り返し部２３を挿入することによって、フレキシブルダクト８の径の違いに対応させることができ、また、フレキシブルダクト８の高さを調整することもできる。
【００２９】
なお、線状体２０が弾性を有する金属棒体の場合には、図２のように折り返し部２３の先端が直線部２１に接近している場合には、折り返し部２３の先端が直線部２１から少し離れるように弾性変形させて吊りバンド４０の両端４０ａ、４０ｂの穴４１ａ、４１ｂに折り返し部２３の先端を挿通すればよい。
なお、図５のように折り返し部２３の先端と直線部２１との間に隙間を設けてもよい。
【００３０】
なお、図６は施工されるダクトとの関係を示している。
図中、５０はビルディングなどの建造物の垂直壁、５１は垂直壁５０で区画されて形成された縦穴であって、縦穴５１に沿って送風用の縦ダクト５２が階の上下方向に設置され、各階ごとに分岐ダクト５３が垂直壁５０の貫通部５０ａ（天井板６０と天井コンクリート面の中間にある）に挿入され、この分岐ダクト５３から防火ダンパ５４、風量調整ユニット５５を介して、デッキプレート１の下方に長尺のフレキシブルダクト８ａが接続され、このフレキシブルダクト８ａに分配チャンバ５６を介して複数のフレキシブルダクト８ｂが接続され、各フレキシブルダクト８ｂは天井板６０の吹き出し口６１に接続される。なお、縦ダクト５２から風量調整ユニット５５までは金属製である。
【００３１】
従って、天井面を構成するデッキプレート１にこれらのフレキシブルダクト８ａ及びフレキシブルダクト８ｂを配設する方向に沿って適宜間隔で穴１ａをあけて、前記した方法によって吊り下げ支持具でフレキシブルダクト８ａ、フレキシブルダクト８ｂをデッキプレート１から吊り下げ支持すればよい。
【００３２】
デッキプレート１の代りに板材を用いる場合には、コンクリート養生後に板材を除去する際に吊り下げ支持具に衝突するので、前記したようにデッキプレート１に吊り下げ支持具を取り付ける。
【００３３】
なお、抜け防止曲げ部２２を図２〜５のように嵌合体３０の上でリボン状に巻き嵌合体３０の直径を越えて横切る形で載置されるのではなく、図７に示すように、線状体２０が嵌合体３０を上方に貫通してすぐに折り曲げられ、嵌合体３０の半径を越えて横切る形で載置されている。
【００３４】
なお、図１の実施形態では吊り下げ支持具は線状体２０と嵌合体３０とで構成した場合を示しているが、図８に示すように嵌合体を省いて線状体２０のみで構成してもよい。
【００３５】
【発明の効果】
以上のように本発明によれば、被支持体を包持させた吊りバンドの両端の穴に、前記折り返し部の先端を挿通するだけの極めて簡単な作業で、被支持体を吊り下げ支持することができ、施工時間を大幅に短縮できる。
【００３６】
また、吊りボルトやＬ形金具や、ナットやボルトなどを必要としないので、大幅にコスト減を実現できる。
【００３７】
また、線状体２０は金属の細い棒体なので、障害物などがある場合、直線部２１を曲げることによって、容易に障害物などを避けて被支持体を吊り下げ支持することができる。
【図面の簡単な説明】
【図１】本発明の一実施形態を示す斜視図
【図２】同実施形態の使用状態を示す断面図
【図３】同実施形態の使用状態を示す断面図
【図４】同実施形態の使用状態を示す斜視図
【図５】本発明の他の実施形態を示す正面図
【図６】本発明のダクト吊り下げ構造を示す概略図
【図７】本発明の他の実施形態を示す正面図
【図８】本発明の他の実施形態の使用状態を示す断面図
【図９】従来の吊り下げ支持装置を示す断面図
【符号の説明】
２０線状体
２１直線部
２２抜け防止曲げ部
２３折り返し部
３０嵌合体
３１貫通穴[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hanging support for hanging and supporting a supported body from a concrete surface.
[0002]
[Prior art and problems to be solved by the invention]
In air-conditioning work in buildings, factories, warehouses, station buildings, and other buildings, circular ducts (spiral ducts) made of galvanized iron plates that are heavy are used to transport air (fresh outside air, cold air, warm air, exhaust). However, in recent years, the duct at the end connected to the ceiling outlet etc. is easy to simplify and shortens the construction. It is supported by hanging from the surface.
[0003]
In order to suspend the duct from the ceiling concrete surface in this way, conventionally, a dedicated cradle is attached to the upper surface of the duct, and the cradle is connected to the locking fixture fixed to the ceiling concrete and suspended. Method (Patent Document 1), both ends of the first wire surrounding the duct having different linear lengths are inserted into two small holes on the upper and lower sides of the first metal plate bent in the shape of a square. Fix the part to the first metal plate and center the end of the straight second number line suspended from the concrete surface and one of the two end parts of the first number in a square shape A method in which the duct is suspended and supported from the ceiling concrete surface by penetrating from the top and bottom two small holes of the second metal plate bent from above and below, and fixing the first and second wires to the second metal plate ( There existed patent document 2).
[0004]
[Patent Document 1]
JP-A-8-285359 (2nd page, FIG. 1)
[Patent Document 2]
Japanese Utility Model Publication No. 58-25193 (page 4, Fig. 1)
[0005]
However, in the former method, a dedicated cradle must be provided on the upper surface of the duct in advance, resulting in high costs. In the latter method, the ends of the number wires must be inserted into the two metal plates from the top and bottom, so that work is required. It was complicated.
[0006]
For this reason, conventionally, a method of hanging a duct using an insert is also performed.
That is, as shown in FIG. 9, a hole 1a is made in the deck plate 1 constituting the ceiling surface, and the insert 2 is driven into the hole 1a from the upper side so that the lower part 2a of the insert 2 is exposed to the lower side of the deck plate 1. Next, the concrete 3 is placed on the upper side of the deck plate 1.
[0007]
After the concrete is placed, the upper end of the suspension bolt 4 is screwed into the screw hole 2b of the insert 2 from below and fixed.
Next, the nut 5 is screwed to the lower part of the suspension bolt 4, the mounting hole 6 b of the horizontal portion 6 a of the L-shaped metal fitting 6 is passed, and another nut 7 is screwed from the lower side, and the two nuts 5, 7, the L-shaped bracket 6 is fixed to the lower part of the suspension bolt 4.
[0008]
Next, the holes 11a and 9b of the suspension band 9 holding the flexible duct 8 are aligned with the mounting holes 6d of the vertical portion 6c of the L-shaped bracket 6 and the bolts 11 are passed through the mounting holes 6d. The ends 9 a and 9 b of the suspension band 9 are fixed to the L-shaped bracket 6 by tightening with the nut 12.
In this way, the flexible duct 8 is suspended and supported.
[0009]
However, in such a conventional method, (a) driving the insert 2 into the hole 1 a of the deck plate 1, (b) attaching the suspension bolt 4 to the insert 2, and (c) L-shaped metal fitting to the suspension bolt 4 4) installation with two nuts 5 and 7 and (d) installation of the suspension band 9 on the L-shaped bracket 6 with bolts 11 and nuts 12 are necessary, which takes time and time. It was hanging.
[0010]
In addition, even if the flexible duct 8 has a maximum weight, the weight of the flexible duct 8 is about 2 kg per meter. However, the use of the suspension bolts 4 and the L-shaped brackets 6 is an excessive design and increases the cost. The amount of attached parts is also large, and for example, in large-scale building, this construction has to be performed in countless places, which has been a heavy burden on the installer.
[0011]
The object of the present invention is to provide a suspension support, a duct suspension structure, and a duct suspension method that solve the above-described problems and that can reduce the cost and the construction time significantly.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the suspension support of claim 1 of the present invention comprises:
A suspension support tool for supporting a suspended body from a concrete surface by wrapping a supported body with a suspension band,
A linear body composed of a thin metal rod- like body having elasticity composed of a straight portion, an anti-bending portion provided at the upper end of the linear portion, and a folded portion provided at the lower end of the linear portion;
It is a columnar elastic body with a small diameter on the lower side, and consists of a fitting body with through holes provided along the axis up and down,
The tip of the folded portion of the linear body is in a state of approaching or contacting the linear portion,
In a state where the linear portion of the linear body is inserted from above until the anti-bending bent portion contacts the upper end of the fitting body in the through hole of the fitting body, the fitting body is attached to the linear portion,
The fitting body is pushed into a hole formed in the deck plate from above, and is fitted in an elastically deformed state by being pressed against the edge of the hole, and concrete is placed on the upper surface of the deck plate to thereby prevent the falling prevention bending portion. The lower part of the fitting body, the straight line part and the folded part are exposed downward from the deck plate surface by being embedded in a concrete surface, and the tip of the folded part is inserted into the holes at both ends of the suspension band holding the supported body. The linear body is elastically deformed so as to be separated from the linear portion, and is inserted into the lower end portion of the folded portion to support both ends of the suspension band.
[0014]
Moreover, the duct hanging structure of claim 2 of the present invention is
In the hole drilled in the deck plate, the lower side is fitted in a state where the small-diameter columnar elastic fitting body is elastically deformed by pushing from above,
Prevention of coming out of contact with the upper end of the fitting body, which is integrally provided at the upper end of a linear body made of a thin metal rod having elasticity inserted into through holes provided along the axial center above and below the fitting body. The bent portion is embedded in the concrete placed on the upper surface side of the deck plate,
A folded portion having a tip approaching or contacting the linear portion of the linear body integrally provided at a lower portion of the fitting body, the linear body, and a lower end of the linear body is formed on the deck plate. On the bottom side,
The folded part is elastically deformed so as to be separated from the linear part of the linear body in the holes at both ends of the suspension band holding the duct, and both ends of the suspension band are held by the folded part. It is characterized by.
[0015]
Moreover, the duct hanging method according to claim 3 of the present invention is:
Laying the deck plate,
A step of making a plurality of holes along the laying direction of the duct in the deck plate;
A linear body composed of a thin rod- like body having elasticity composed of a straight portion, a slip-off preventing bent portion provided at the upper end of the linear portion, and a folded portion provided at the lower end of the linear portion, and a lower side having a small diameter A columnar elastic body and a fitting body provided with a through hole vertically along the axis, and the tip of the folded portion of the linear body is in a state of approaching or contacting the linear portion , hanging straight portion of the linear body said fitting member to said linear portion is attached in a state in which the fall-off preventing bent portion into the through hole of the fitting body is inserted from the upper and lower until it comes into contact with the upper end of the fitting portion Using a support, the fitting body was elastically deformed into the hole by inserting the lower portion of the fitting body, the linear portion, and the folded portion from the upper surface side into the hole of the deck plate downward from the deck plate. A process of fitting in the state,
Placing concrete on the upper surface side of the deck plate, and embedding the escape prevention bending portion;
A duct is laid under the deck plate, the suspension band is wound around the duct, and the folded portion is elastically deformed away from the linear portion of the linear body, and is inserted into holes at both ends of the suspension band. And the step of holding the suspension band on the folded portion.
[0016]
As a result, the supported body is suspended and supported by an extremely simple operation of inserting the tip of the folded portion into the holes at both ends of the suspension band that holds the supported body after placing the concrete. Can do.
[0017]
More specifically, the laying of the duct after placing the concrete only requires winding the suspension band while suspending the duct and setting it in the folded portion at a predetermined band length. Is seen.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a suspension support according to an embodiment of the present invention.
[0019]
As shown in FIG. 1, this suspension support tool is used to suspend and support a supported body (for example, an air conditioning flexible duct) from a concrete surface, and includes a linear body 20 and a fitting body 30.
[0020]
The linear body 20 is a thin metal rod having a circular cross section, and includes a straight portion 21, an anti-bending portion 22 provided at the upper end of the linear portion 21, and a folded portion provided at the lower end of the linear portion 21. 23.
[0021]
The fitting body 30 is provided with through holes 31 in the vertical direction along the axis. Therefore, before providing the folded portion 23, the linear portion 21 of the linear body 20 is inserted from the lower end portion into the through hole 31 from above until the drop prevention bending portion 22 contacts the upper end of the fitting body 30, and then The folded portion 23 may be formed by folding the lower end of the straight portion 21 upward.
[0022]
The suspension support thus configured is used as follows.
First, as shown in FIG. 2, a hole 1a is made in the deck plate 1 constituting the ceiling surface.
Next, the folded portion 23 and the linear portion 21 of the linear body 20 are inserted into the hole 1 a of the deck plate 1 from the upper surface side, and the fitting body 30 is fitted into the hole 1 a of the deck plate 1. Thereby, the linear body 20 stands upright and is set on the deck plate 1.
[0023]
In addition, if the fitting body 30 is made into the truncated cone shape which the diameter reduced gradually toward the downward direction, the intermediate part of the up-down direction of the fitting body 30 will fit in the hole 1a.
[0024]
Moreover, if the fitting body 30 is made into a truncated cone shape with an elastic material such as rubber, it is pressed against the edge of the hole 1a by being pushed into the hole 1a from above, so that it is elastically deformed and fitted. Even if there is a deviation in the dimensions, it is compatible, and moisture at the time of placing the concrete is less likely to leak downward from the hole 1a, so that the rust of the linear body 20 can be prevented.
[0025]
Next, concrete 3 is placed on the upper surface side of the deck plate 1 to form a ceiling.
In this way, the upper portion of the anti-bending portion 22 and the fitting body 30 is embedded in the concrete 3, and the lower portion, the straight portion 21, and the folded portion 23 of the fitting body 30 are exposed vertically downward from the deck plate 1. become.
[0026]
After the concrete curing, as shown in FIGS. 2, 3 and 4, the ends of the folded portion 23 are inserted into the holes 41a and 41b of the both ends 40a and 40b of the suspension band 40 holding the flexible duct 8. Thus, both ends 40 a and 40 b of the suspension band 40 are supported at the lower end of the folded portion 23.
[0027]
As described above, the flexible duct 8 can be supported by being suspended from the ceiling surface by a simple operation of passing the tip of the folded portion 23 through the holes 41a and 41b of the both ends 40a and 40b of the suspension band 40.
[0028]
In addition, if at least one of the both ends 40a and 40b of the suspension band 40 is provided with a plurality of holes in the longitudinal direction of the suspension band 40, the flexible band can be inserted by selecting one of the plurality of holes and inserting the folded portion 23. The difference in the diameter of the duct 8 can be accommodated, and the height of the flexible duct 8 can be adjusted.
[0029]
In the case where the linear body 20 is an elastic metal rod, when the tip of the folded portion 23 is close to the straight portion 21 as shown in FIG. 2, the tip of the folded portion 23 is the straight portion 21. The tip of the folded portion 23 may be inserted into the holes 41a and 41b of the both ends 40a and 40b of the suspension band 40 by being elastically deformed so as to be slightly away from each other.
In addition, you may provide a clearance gap between the front-end | tip of the folding | turning part 23, and the linear part 21 like FIG.
[0030]
In addition, FIG. 6 has shown the relationship with the duct constructed.
In the figure, 50 is a vertical wall of a building such as a building, 51 is a vertical hole formed by being partitioned by the vertical wall 50, and a vertical duct 52 for blowing is installed along the vertical hole 51 in the vertical direction of the floor. For each floor, a branch duct 53 is inserted into the penetrating portion 50a of the vertical wall 50 (between the ceiling plate 60 and the ceiling concrete surface), and the deck is connected to the deck via a fire damper 54 and an air volume adjusting unit 55. A long flexible duct 8 a is connected to the lower side of the plate 1, and a plurality of flexible ducts 8 b are connected to the flexible duct 8 a via a distribution chamber 56, and each flexible duct 8 b is connected to an outlet 61 of the ceiling plate 60. The The vertical duct 52 to the air volume adjustment unit 55 are made of metal.
[0031]
Accordingly, holes 1a are formed at appropriate intervals along the direction in which the flexible duct 8a and the flexible duct 8b are arranged in the deck plate 1 that constitutes the ceiling surface, and the flexible duct 8a, The flexible duct 8b may be supported by being suspended from the deck plate 1.
[0032]
When a plate material is used instead of the deck plate 1, it collides with the suspension support when the plate material is removed after the concrete curing, so that the suspension support is attached to the deck plate 1 as described above.
[0033]
It should be noted that, as shown in FIG. 7, the anti-bending portion 22 is not wound on the fitting body 30 in the form of a ribbon as shown in FIGS. 2 to 5 and crosses over the diameter of the fitting body 30. The linear body 20 is bent immediately after passing through the fitting body 30 and is placed so as to cross the radius of the fitting body 30.
[0034]
In the embodiment of FIG. 1, the suspension support is configured by the linear body 20 and the fitting body 30. However, as shown in FIG. 8, the hanging support is configured by only the linear body 20 without the fitting body. May be.
[0035]
【The invention's effect】
As described above, according to the present invention, the supported body is suspended and supported by a very simple operation of inserting the tip of the folded portion into the holes at both ends of the suspension band that holds the supported body. The construction time can be greatly reduced.
[0036]
In addition, since no hanging bolts, L-shaped metal fittings, nuts or bolts are required, the cost can be greatly reduced.
[0037]
Further, since the linear body 20 is a thin metal rod, when there is an obstacle, the supported body can be suspended and supported easily by avoiding the obstacle by bending the straight portion 21.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of the present invention. FIG. 2 is a cross-sectional view showing a use state of the embodiment. FIG. 3 is a cross-sectional view showing a use state of the embodiment. FIG. 5 is a front view showing another embodiment of the present invention. FIG. 6 is a schematic view showing a duct hanging structure of the present invention. FIG. 7 is a front view showing another embodiment of the present invention. FIG. 8 is a sectional view showing a usage state of another embodiment of the present invention. FIG. 9 is a sectional view showing a conventional suspension support apparatus.
20 linear body 21 straight part 22 falling prevention bent part 23 folded part 30 fitting body 31 through hole

Claims

A suspension support tool for supporting a suspended body from a concrete surface by wrapping a supported body with a suspension band,
A linear body composed of a thin metal rod- like body having elasticity composed of a straight portion, an anti-bending portion provided at the upper end of the linear portion, and a folded portion provided at the lower end of the linear portion;
It is a columnar elastic body with a small diameter on the lower side, and consists of a fitting body with through holes provided along the axis up and down,
The tip of the folded portion of the linear body is in a state of approaching or contacting the linear portion,
In a state where the linear portion of the linear body is inserted from above until the anti-bending bent portion contacts the upper end of the fitting body in the through hole of the fitting body, the fitting body is attached to the linear portion,
The fitting body is pushed into a hole formed in the deck plate from above, and is fitted in an elastically deformed state by being pressed against the edge of the hole, and concrete is placed on the upper surface of the deck plate to thereby prevent the falling prevention bending portion. The lower part of the fitting body, the straight line part and the folded part are exposed downward from the deck plate surface by being embedded in a concrete surface, and the tip of the folded part is inserted into the holes at both ends of the suspension band holding the supported body. A suspension support device, wherein the suspension member is elastically deformed so as to be separated from the linear portion of the linear body and supports both ends of the suspension band at a lower end portion of the folded portion.

In the hole drilled in the deck plate, the lower side is fitted in a state where the small-diameter columnar elastic fitting body is elastically deformed by pushing from above,
Prevention of coming out of contact with the upper end of the fitting body, which is integrally provided at the upper end of a linear body made of a thin metal rod having elasticity inserted into through holes provided along the axial center above and below the fitting body. The bent portion is embedded in the concrete placed on the upper surface side of the deck plate,
A folded portion having a tip approaching or contacting the linear portion of the linear body integrally provided at a lower portion of the fitting body, the linear body, and a lower end of the linear body is formed on the deck plate. On the bottom side,
The folded part is elastically deformed so as to be separated from the linear part of the linear body in the holes at both ends of the suspension band holding the duct, and both ends of the suspension band are held by the folded part. A duct hanging structure characterized by

Laying the deck plate,
A step of making a plurality of holes along the laying direction of the duct in the deck plate;
A linear body composed of a thin rod- like body having elasticity composed of a straight portion, a slip-off preventing bent portion provided at the upper end of the linear portion, and a folded portion provided at the lower end of the linear portion, and a lower side having a small diameter A columnar elastic body and a fitting body provided with a through hole vertically along the axis, and the tip of the folded portion of the linear body is in a state of approaching or contacting the linear portion , hanging straight portion of the linear body said fitting member to said linear portion is attached in a state in which the fall-off preventing bent portion into the through hole of the fitting body is inserted from the upper and lower until it comes into contact with the upper end of the fitting portion Using a support, the fitting body was elastically deformed into the hole by inserting the lower portion of the fitting body, the linear portion, and the folded portion from the upper surface side into the hole of the deck plate downward from the deck plate. A process of fitting in the state,
Placing concrete on the upper surface side of the deck plate, and embedding the escape prevention bending portion;
A duct is laid under the deck plate, the suspension band is wound around the duct, and the folded portion is elastically deformed away from the linear portion of the linear body, and is inserted into holes at both ends of the suspension band. And a step of holding the suspension band on the folded portion.