JP2010174601A - Mounting hole forming implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting hole forming implement for easily forming a mounting hole when placing concrete. <P>SOLUTION: The mounting hole forming implement 1 disposed in a form 60 and removed after placing concrete 65 to form the mounting hole for a post includes divided pieces 3 dividing a cylinder body 2 corresponding to the mounting hole 64, into a plurality of pieces; a positioning means 19 positioning a core member 4 and the divided pieces 3; bar bodies 23 adjusting the spacing of the core member 4 and the divided pieces 3 so that abutting parts 13 of the divided pieces 3 abut on the other side inner surfaces of the adjacent divided pieces 3; and a cover body for blocking the lower part of the cylinder body 2. The core member 4 is inserted inside, and the divided pieces 3 are arranged in cylinder shape by the positioning means 19. The abutting parts 13 of the adjacent divided pieces 3 are allowed to abut on the other side inner surfaces of the divided pieces 3 by the bar bodies 23 to assemble the cylinder body 2. After the lower part of the cylinder body 2 is blocked with the cover body, the mounting hole forming implement 1 is disposed in the form 61 and the concrete 65 is placed in the form 61. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、支柱を固定するための取付孔をコンクリート躯体に形成する取付孔の形成具に関する。   The present invention relates to a mounting hole forming tool for forming a mounting hole for fixing a support in a concrete frame.

従来、コンクリート躯体に支柱を取り付ける場合、躯体に取付孔を設け、この取付孔の底部にはアンカー筋に固定したアンカープレートを設け、このアンカープレートに支柱の下部を溶接した後、前記取付孔にモルタルを充填して行われる（例えば特許文献１）。   Conventionally, when attaching a column to a concrete frame, a mounting hole is provided in the frame, an anchor plate fixed to an anchor bar is provided at the bottom of the mounting hole, and the lower part of the column is welded to the anchor plate, and It is performed by filling mortar (for example, Patent Document 1).

上記の取付構造では、コンクリート躯体を形成した後、現場でドリルなどを用いて取付孔を形成する必要があり、作業性が悪いという問題がある。また、錆を防ぐためにモルタルを充填するが、経時的に、破損、ひび割れ等が発生する虞がある。   In the above mounting structure, it is necessary to form a mounting hole using a drill or the like on the site after forming the concrete frame, and there is a problem that workability is poor. Moreover, although mortar is filled in order to prevent rust, there exists a possibility that a breakage, a crack, etc. may generate | occur | produce with time.

また、前記特許文献１では、他の取付構造として、コンクリート躯体の上面には凹部を形成し、この凹部の内面にはスパイラルシースが埋設され、このスパイラルシースはアンカー筋に溶接され、前記凹部に支柱の下部を挿入すると共に、無収縮性モルタルを充填する構造が提案されている。   Further, in Patent Document 1, as another mounting structure, a concave portion is formed on the upper surface of the concrete casing, and a spiral sheath is embedded in the inner surface of the concave portion, and this spiral sheath is welded to an anchor bar, and is attached to the concave portion. A structure has been proposed in which the lower part of the column is inserted and filled with non-shrinkable mortar.

そして、上記のようにシースを用い、溶接を不要とする構造が提案されており、これは例えば図１５に示すように、シース管１０１に鍔部１０２を設け、そのシース管１０１の底部を塞ぐ底面部１０３にナット体１０４を設け、このナット体１０４に吊設棒１０５の下端を螺合すると共に、シース管１０１内に発泡スチロール１０６を挿入し、あるいはシース管１０１内に発泡ウレタンを充填し、型枠パネル１０７，１０７の上端間にセパレータ１０８を掛け渡し、このセパレータ１０８に前記吊設棒１０５の上端を連結して型枠内にシース管１０１を配置する。   And the structure which uses a sheath as mentioned above and does not require welding is proposed, for example, as shown in FIG. 15, this provides the collar part 102 in the sheath pipe | tube 101, and plugs the bottom part of the sheath pipe | tube 101 A nut body 104 is provided on the bottom surface portion 103, and the lower end of the suspension rod 105 is screwed into the nut body 104, and a foamed polystyrene 106 is inserted into the sheath tube 101, or foamed urethane is filled into the sheath tube 101, A separator 108 is stretched between the upper ends of the mold panels 107 and 107, and the upper end of the suspension bar 105 is connected to the separator 108, and the sheath tube 101 is arranged in the mold.

前記型枠パネル１０７，１０７にコンクリート１０９を充填し、コンクリート１０９を養生した後、吊設棒１０５を操作してナット体１０４から外し、さらに、セパレータ１０８を取り外し、内部の発泡スチロール１０６を取り出すことにより、シース管１０１内に支柱１１０の下部を挿入する挿入孔が形成され、そのシース管１０１内に支柱１１０の下部を挿入し、充填材を充填することにより支柱１１０を立設することができる。   After filling the formwork panels 107 and 107 with concrete 109 and curing the concrete 109, the suspension rod 105 is operated to remove it from the nut body 104, and the separator 108 is removed, and the foamed polystyrene 106 is taken out. An insertion hole for inserting the lower portion of the support column 110 is formed in the sheath tube 101, and the support column 110 can be erected by inserting the lower portion of the support column 110 into the sheath tube 101 and filling the filler.

特開平８−１３７３７号公報JP-A-8-13737

上記のシース管１０１を用いる構造では、コンクリート充填前の型枠内にシース管１０１を配置するから、コンクリート１０９の下からの侵入を防止するため、底面を塞ぐと共に、コンクリート１０９の上からの侵入を防止するため、内部に発泡材を充填するなどの作業の必要があり、発泡材の充填・取出作業が煩雑になるという問題がある。   In the structure using the sheath tube 101 described above, since the sheath tube 101 is disposed in the mold before filling with concrete, the bottom surface is blocked and the intrusion from above the concrete 109 is prevented in order to prevent the intrusion from below the concrete 109. In order to prevent this, it is necessary to perform an operation such as filling the inside with a foaming material, and there is a problem that the filling and taking out operations of the foaming material become complicated.

また、上記の方法では、シース管１０１内に支柱１１０の下部を挿入し、充填材を充填することにより支柱１１０を立設するから、シース管１０１が鋼製の場合、経時的に錆が発生する問題があり、鋼製以外の場合でも、コンクリート躯体と支柱１１０との間にシース管１０１が介在し、コンクリート１０９とシース管１０１の外面が接すると共にシース管１０１の内面と充填材とが接することになり、取付孔に直接モルタル等の充填材を充填する構造に比べて、耐久性に対する信頼性に劣る問題がある。   Further, in the above method, since the lower portion of the support column 110 is inserted into the sheath tube 101 and the support column 110 is erected by filling the filler, rust occurs with time when the sheath tube 101 is made of steel. Even in cases other than steel, the sheath tube 101 is interposed between the concrete frame and the column 110, and the concrete 109 and the outer surface of the sheath tube 101 are in contact with each other, and the inner surface of the sheath tube 101 and the filler are in contact with each other. Therefore, there is a problem that the reliability for durability is inferior to the structure in which the mounting hole is directly filled with a filler such as mortar.

そこで、本発明は上記した問題点に鑑み、コンクリートの打設時に取付孔を簡便に形成することができる取付孔の形成具を提供することを目的とする。   In view of the above-described problems, an object of the present invention is to provide a mounting hole forming tool that can easily form mounting holes when placing concrete.

上記目的を達成するために、請求項１に係る発明は、型枠内に配置され、コンクリート打設後に取り外して支柱用の取付孔を形成する取付孔の形成具において、前記取付孔に対応する筒体を複数に分割した分割片と、前記分割片の一側に設けられ隣合う前記分割片の他側内面に当接する当接部と、前記筒体内に着脱自在に挿入される芯材と、この芯材と前記分割片とを位置決めする位置決め手段と、前記分割片の当接部を前記隣合う分割片の他側内面に当接するように前記芯材と前記分割片との間隔を調整する間隔調整手段と、前記筒体の下部を塞ぐ蓋体とを備えるものである。   In order to achieve the above object, the invention according to claim 1 corresponds to the mounting hole in a mounting hole forming tool which is disposed in a mold and is removed after placing concrete to form a mounting hole for a column. A divided piece obtained by dividing the cylindrical body into a plurality of pieces, a contact portion that is provided on one side of the divided piece and is in contact with the other inner surface of the adjacent divided piece, and a core member that is detachably inserted into the cylindrical body; , Positioning means for positioning the core material and the divided piece, and the interval between the core material and the divided piece is adjusted so that the contact portion of the divided piece contacts the other inner surface of the adjacent divided piece A gap adjusting means for closing the lid and a lid for closing the lower portion of the cylindrical body.

また、請求項２に係る発明は、前記位置決め手段は、前記分割片の内面に設けられた分割片係合部と、前記芯材に設けられ前記分割片係合部に係合する芯材係合部とからなる。   According to a second aspect of the present invention, the positioning means includes a split piece engaging portion provided on an inner surface of the split piece, and a core member engaging with the split piece engaging portion provided on the core member. Composed of joints.

また、請求項３に係る発明は、前記分割片係合部は、前記分割片の他側に設けられている。   In the invention according to claim 3, the divided piece engaging portion is provided on the other side of the divided piece.

また、請求項４に係る発明は、前記間隔調整手段は、前記分割片と前記芯材の間に設けられ長軸方向と短軸方向とが交差する断面形状を有する棒体である。   According to a fourth aspect of the present invention, the distance adjusting means is a rod body provided between the divided piece and the core member and having a cross-sectional shape in which a major axis direction and a minor axis direction intersect.

また、請求項５に係る発明は、前記棒体は、前記長軸方向両側に円弧状部を有し、この円弧状部に対応して前記芯材に凹部を設けたものである。   According to a fifth aspect of the present invention, the rod has an arcuate portion on both sides in the long axis direction, and a concave portion is provided in the core member corresponding to the arcuate portion.

また、請求項６に係る発明は、前記蓋体を、前記分割片及び前期芯材と別体に設け、前記蓋体を引き抜く引き抜き手段を設けたものである。   According to a sixth aspect of the present invention, the lid is provided separately from the divided pieces and the core material, and a pulling means for pulling out the lid is provided.

本発明の請求項１の構成によれば、芯材を内部に挿入し、位置決め手段により分割片を筒状に配置し、間隔調整手段により分割片の他側内面に隣合う分割片の当接部を当接させて筒体を組み立て、筒体の下部を蓋体により塞いだ後、型枠内に配置し、型枠内にコンクリートを打設する。コンクリートが硬化したら、間隔調整手段により前記当接を解除し、筒体内から芯材を引き抜き、筒体を縮小するようにして分割片をコンクリートから離し、分割片を引き抜き、必要に応じて蓋体を引き抜くことにより、コンクリート躯体に取付孔が形成される。この場合、形成具は組み立てて繰り返し使用することができる。   According to the configuration of the first aspect of the present invention, the core member is inserted into the inside, the divided pieces are arranged in a cylindrical shape by the positioning means, and the adjacent pieces are brought into contact with the inner surface of the other side of the divided pieces by the interval adjusting means. After the parts are brought into contact with each other, the cylinder is assembled, the lower part of the cylinder is closed with a lid, and then placed in the mold, and concrete is placed in the mold. When the concrete is hardened, the contact is released by the interval adjusting means, the core material is pulled out from the cylinder, the divided piece is separated from the concrete so that the cylinder is reduced, the divided piece is pulled out, and the lid is removed as necessary. By pulling out, a mounting hole is formed in the concrete frame. In this case, the former can be assembled and used repeatedly.

また、請求項２の構成によれば、分割片係合部と芯材係合部との係合により、芯材と分割片とが位置決めされる。   Moreover, according to the structure of Claim 2, a core material and a division | segmentation piece are positioned by engagement with a division | segmentation piece engagement part and a core material engagement part.

また、請求項３の構成によれば、分割片の他側を位置決めすることができる。   Moreover, according to the structure of Claim 3, the other side of a division | segmentation piece can be positioned.

また、請求項４の構成によれば、棒体を回すことにより、分割片と芯材との間隔を長軸方向の長さと短軸方向の長さに調整できる。   Moreover, according to the structure of Claim 4, the space | interval of a division piece and a core material can be adjusted to the length of a major axis direction, and the length of a minor axis direction by turning a rod.

また、請求項５の構成によれば、円弧状部により棒体を円滑に回動操作することができる。   Moreover, according to the structure of Claim 5, a rod can be smoothly rotated by an arc-shaped part.

また、請求項６の構成によれば、引き抜き手段により蓋体を引き抜くことができる。   Moreover, according to the structure of Claim 6, a cover body can be extracted by an extraction means.

本発明の実施例１を示す使用状態の平面図である。It is a top view of the use condition which shows Example 1 of this invention. 同上、調整手段を略９０度回転した状態の平面図である。It is a top view of the state which rotated the adjustment means about 90 degree | times same as the above. 同上、調整手段を引き抜いた状態の平面図である。It is a top view of the state which pulled out the adjustment means same as the above. 同上、芯材を引き抜いた状態の平面図である。It is a top view of the state which pulled out the core material same as the above. 同上、蓋体回りの斜視図である。It is a perspective view around a lid body same as the above. 同上、取付手段により型枠に取り付けた状態の断面図である。It is sectional drawing of the state attached to the formwork by the attachment means same as the above. 同上、一部を断面にした取付手段の側面図である。It is a side view of the attachment means which made a part a cross section same as the above. 同上、取付手段の平面図である。It is a top view of an attachment means same as the above. 本発明の実施例２を示す取付手段により型枠に取り付けた状態の断面図である。It is sectional drawing of the state attached to the formwork by the attachment means which shows Example 2 of this invention. 本発明の実施例３を示す使用状態の平面図である。It is a top view of the use condition which shows Example 3 of this invention. 同上、調整手段を略９０度回転した状態の平面図である。It is a top view of the state which rotated the adjustment means about 90 degree | times same as the above. 同上、調整手段を引き抜いた状態の平面図である。It is a top view of the state which pulled out the adjustment means same as the above. 同上、芯材を引き抜いた状態の平面図である。It is a top view of the state which pulled out the core material same as the above. 本発明の実施例４を示す蓋体回りの斜視図である。It is a perspective view around the lid body which shows Example 4 of the present invention. 従来例を示す断面図である。It is sectional drawing which shows a prior art example.

本発明における好適な実施の形態について、添付図面を参照しながら詳細に説明する。なお、以下に説明する実施の形態は、特許請求の範囲に記載された本発明の内容を限定するものではない。また、以下に説明される構成の全てが、本発明の必須要件であるとは限らない。各実施例では、従来とは異なる新規な取付孔の形成具を採用することにより、従来にない取付孔の形成具が得られ、その取付孔の形成具と製造方法を夫々記述する。   Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all the configurations described below are not necessarily essential requirements of the present invention. In each of the embodiments, by using a new mounting hole forming tool different from the conventional one, an unprecedented mounting hole forming tool is obtained, and the mounting hole forming tool and the manufacturing method are described respectively.

以下、本発明の取付孔の形成具を添付図面を参照して説明する。図１〜図９は、本発明の実施例１を示し、同図に示すように、取付具１は、コンクリート躯体の取付孔６４に対応する形状を有する筒体２を複数に分割した分割片３と、前記筒体２内に長さ方向から挿入する芯材４とを備える。   Hereinafter, the mounting hole forming tool of the present invention will be described with reference to the accompanying drawings. 1 to 9 show Embodiment 1 of the present invention. As shown in FIG. 1, the fixture 1 is a divided piece obtained by dividing a cylindrical body 2 having a shape corresponding to a mounting hole 64 of a concrete frame into a plurality of pieces. 3 and a core member 4 inserted into the cylindrical body 2 from the longitudinal direction.

この例では、前記筒体２及び芯材４は略方形をなし、前記分割片３はその筒体２を周方向で４分割した同一形状のものが用いられ、その分割片３は、直線部１１の他側に湾曲部１２を有すると共に、直線部１１の一側に前記湾曲部１２の内面に当接する当接部１３を有する。前記当接部１３と直線部１１の間には該当接部１３を内側に下げる段部１４が形成され、当接部１３の先端側にゴム丸棒からなる弾性水密部材たるパッキン１５を装着する装着溝１６を設け、この装着溝１６に装着したパッキン１５が前記湾曲部１２の内面に当接する。   In this example, the cylindrical body 2 and the core material 4 are substantially square, and the divided piece 3 is of the same shape obtained by dividing the cylindrical body 2 into four in the circumferential direction. 11 has a curved portion 12 on the other side, and has an abutting portion 13 on one side of the linear portion 11 that abuts against the inner surface of the curved portion 12. A step portion 14 is formed between the contact portion 13 and the straight portion 11 to lower the contact portion 13 inward, and a packing 15 that is an elastic watertight member made of a rubber round bar is attached to the distal end side of the contact portion 13. A mounting groove 16 is provided, and the packing 15 mounted in the mounting groove 16 contacts the inner surface of the bending portion 12.

前記分割片３の一側内面には、他側が開口した溝状の分割片係合部１７が突設され、この分割片係合部１７に係合する芯材係合部１８が前記芯材４に突設されている。そして、分割片係合部１７と芯材係合部１８とにより位置決め手段１９が構成され、分割片係合部１７と芯材係合部１８とが遊嵌状態で噛み合うことにより、芯材４に対して、分割片３の一側が位置決めされる。また、前記当接部１３の内面側には、前記芯材４に当接する規制部２０が設けられ、この規制部２０が芯材４の外面に当接した状態で、分割片３の他側が取付孔６４の位置より僅かに内側に位置する。   A groove-shaped divided piece engaging portion 17 having an opening on the other side projects from the inner surface of one side of the divided piece 3, and a core material engaging portion 18 that engages with the divided piece engaging portion 17 serves as the core material. 4 is projected. And the positioning means 19 is comprised by the division | segmentation piece engagement part 17 and the core material engagement part 18, and when the division | segmentation piece engagement part 17 and the core material engagement part 18 are meshed | engaged in a loose fitting state, the core material 4 is comprised. In contrast, one side of the split piece 3 is positioned. Further, on the inner surface side of the abutting portion 13, a restricting portion 20 that abuts on the core material 4 is provided. With the restricting portion 20 abutting on the outer surface of the core material 4, It is located slightly inside the position of the mounting hole 64.

前記芯材４には、前記分割片３の一側に対応して、略半円状の芯材凹部２１が設けられ、この芯材凹部２１に対応して、分割片３に分割片凹部２２を設けている。そして、それら凹部２１，２２の間に、調整手段たる棒体２３を長手方向から配置している。この棒体２３は、断面円形の両側に平坦部２４を形成することにより、それら平坦部２４，２４間が断面の短軸方向となり、円弧状部２５，２５間が長軸方向となり、図２に示すように、平坦部２４，２４を内外にして棒体２３を挿入し、図１に示すように、棒体２３を略９０度回転することにより、凹部２１，２２間が棒体２３の長軸方向寸法に対応した間隔となり、当接部１３のパッキン１５が分割片３の他側内面に圧接され、水密性が確保される。また、棒体２３の上部は、筒体２から上部に突出し、工具係合部たる平坦部２３Ｈにより棒体２３を回転操作することができる。尚、前記芯材凹部２１は棒体２３の長手方向の寸法の２分の１にほぼ対応した半径を有する。   The core material 4 is provided with a substantially semicircular core material concave portion 21 corresponding to one side of the divided piece 3, and the divided piece concave portion 22 is divided into the divided piece 3 corresponding to the core material concave portion 21. Is provided. And between these recessed parts 21 and 22, the rod 23 which is an adjustment means is arrange | positioned from the longitudinal direction. In this rod body 23, flat portions 24 are formed on both sides of a circular cross section so that the flat portions 24 and 24 are in the short axis direction of the cross section and the arc-shaped portions 25 and 25 are in the long axis direction. As shown in FIG. 1, the rod body 23 is inserted with the flat portions 24, 24 inside and outside, and the rod body 23 is rotated approximately 90 degrees as shown in FIG. The spacing corresponds to the dimension in the major axis direction, and the packing 15 of the contact portion 13 is pressed against the other inner surface of the split piece 3 to ensure water tightness. Further, the upper portion of the rod body 23 protrudes upward from the cylindrical body 2, and the rod body 23 can be rotated by a flat portion 23H serving as a tool engaging portion. The core recess 21 has a radius that substantially corresponds to half the longitudinal dimension of the rod 23.

また、この例では、前記筒体２及び芯材４をアルミニウム合金の押出成形品を用い、後述する突出部を除いて平面図に示す断面形状が長さ方向全長に連続する。尚、筒体２及び芯材４は、アルミニウム合金製に限らず、合成樹脂製や金属製など各種の材質のものを用いることができる。   Moreover, in this example, the cylindrical body 2 and the core material 4 are made of an aluminum alloy extrusion-molded product, and the cross-sectional shape shown in the plan view is continuous with the entire length in the length direction except for a protruding portion described later. In addition, the cylindrical body 2 and the core material 4 are not limited to aluminum alloy, but may be made of various materials such as synthetic resin and metal.

また、前記分割片３の外周には、その外周面から部分的に突出する突出部２６をそれぞれ設け、この突出部２６は直線部１１の一側に設けられ、頭部が平坦なビス２７により分割片３の直線部１１に固定され、前記突出部２６により取付孔６４に凹部が形成される。尚、突出部２６は筒体２の長さ方向において部分的に設けられ、また、外側に向かって小さくなる形状を有する。そして、前記突出部２６により、前記取付孔６４の周面に凹部を形成する凹部形成部を構成している。   Further, on the outer periphery of the divided piece 3, a protruding portion 26 that partially protrudes from the outer peripheral surface is provided, and this protruding portion 26 is provided on one side of the straight portion 11, and is formed by a screw 27 having a flat head. A fixed part is formed on the straight part 11 of the split piece 3, and a concave part is formed in the mounting hole 64 by the protruding part 26. In addition, the protrusion part 26 has a shape which is partially provided in the length direction of the cylinder 2, and becomes small toward the outer side. The protrusion 26 constitutes a recess forming portion that forms a recess on the peripheral surface of the mounting hole 64.

さらに、前記形成具１の下部には筒体２の下部を塞ぐ蓋体３１が別体で設けられ、この蓋体３１は筒体２より僅かに小さく形成されている。また、前記蓋体３１の螺子孔３２には、引き抜き手段たる全螺子ボルト３３の下端が螺合され、この全螺子ボルト３３の上部には工具係合部たる頭部３４が設けられ、この頭部３４は両側に平坦部が形成されている。尚、全螺子ボルト３３は複数（２本）設けられている。   Further, a lid body 31 for closing the lower portion of the cylindrical body 2 is provided separately at the lower portion of the forming tool 1, and the lid body 31 is formed slightly smaller than the cylindrical body 2. Further, the lower end of a full screw bolt 33 as a pulling means is screwed into the screw hole 32 of the lid 31, and a head 34 as a tool engaging portion is provided on the top of the full screw bolt 33. The portion 34 is formed with flat portions on both sides. Note that a plurality (two) of all screw bolts 33 are provided.

前記形成具１は、取付手段４１により、型枠に取り付けられる。図６に示す型枠６１は、鋼製であり、型枠パネル６２，６２間にコンクリート６３が充填され、それら型枠パネル６２，６２の上端には、水平方向の鍔部６３，６３が設けられている。前記取付手段４１は、前記鍔部６３に固定する縦方向の伸縮腕部４２と、この伸縮腕部４２の上部に固定する断面略Ｌ型の横腕部４３とを備える。前記伸縮腕部４２は、略Ｌ型の上腕部４４と下腕部４５とからなり、この下腕部４５の水平方向をなす下辺４５Ｕを、ボルトナットなどの締め具４６により一方の前記鍔部６３に固定し、それぞれ垂直方向をなす上腕部４４の下辺４４Ｓと下腕部４５の上辺４５Ｕとを重ね合わせ、上腕部４４の上辺４４Ｕと下腕部４５の下辺４５Ｓの一方に縦長な長孔４７を穿設すると共に、他方に透孔４８を穿設し、この例では、下腕部４５の上辺４５Ｕに前記長孔４７を穿設し、前記長孔４７と透孔４８に挿通したボルト４９にナットを螺合することにより、長穴４７の寸法に対応した寸法だけ、伸縮腕部４２の高さを調整可能としている。また、上腕部４４の水平方向をなす上辺４４Ｕに、前記横腕部４３と交差方向の長孔５０を穿設し、この長孔５０に対応して、前記横腕部４３には長手方向の長孔５１を穿設し、それら長孔５０，５１に挿通したボルト５２にナットを螺合することにより、伸縮腕部４２に横腕部４３を固定し、前記長孔５０，５１に対応して、横腕部４３の取付位置を調整することができる。   The forming tool 1 is attached to the mold by the attaching means 41. The formwork 61 shown in FIG. 6 is made of steel, and concrete 63 is filled between the formwork panels 62 and 62, and horizontal flange parts 63 and 63 are provided at the upper ends of the formwork panels 62 and 62. It has been. The attachment means 41 includes a longitudinal arm 42 that is fixed to the flange 63 and a lateral arm 43 that is substantially L-shaped in cross section and is fixed to the top of the telescopic arm 42. The telescopic arm part 42 is composed of a substantially L-shaped upper arm part 44 and a lower arm part 45, and a lower side 45U that forms the horizontal direction of the lower arm part 45 is connected to one of the flange parts by a fastener 46 such as a bolt and nut. 63, and the upper side 44S of the upper arm part 44 and the upper side 45U of the lower arm part 45, which are perpendicular to each other, are overlapped, and a vertically long slot is formed in one of the upper side 44U of the upper arm part 44 and the lower side 45S of the lower arm part 45. In this example, the long hole 47 is formed in the upper side 45U of the lower arm portion 45, and the bolt is inserted through the long hole 47 and the through hole 48. By screwing the nut into 49, the height of the telescopic arm portion 42 can be adjusted by a dimension corresponding to the dimension of the elongated hole 47. Further, a long hole 50 intersecting with the horizontal arm portion 43 is formed in an upper side 44U that forms a horizontal direction of the upper arm portion 44, and the horizontal arm portion 43 has a longitudinal direction corresponding to the long hole 50. Long holes 51 are drilled, and nuts are screwed into bolts 52 inserted into the long holes 50 and 51, thereby fixing the lateral arm portion 43 to the telescopic arm portion 42, and corresponding to the long holes 50 and 51. Thus, the mounting position of the lateral arm portion 43 can be adjusted.

そして、前記横腕部４３の先端側に前記棒体２３と前記全螺子ボルト３３を挿通する挿通孔３４を穿設し、この挿通孔３４を挿通した全螺子ボルト３３を前記蓋体３１の螺子孔３２に螺合し、全螺子ボルト３３の上部にナット３６を螺合し、前記挿通孔３５に挿通した棒体２３を前記凹部２１，２２間に挿通する。この場合、図２に示すように、平坦部２４を内外に向けた状態で、棒体２３を挿入し、挿入後、棒体２３を略９０度回転することにより、円弧状部２５，２５が内外に向き、棒体２３が分割片３を外側に押し、パッキン１５が押圧された状態で湾曲部１２の内面に圧接する。また、ナット３６を回すことにより、蓋体３１を筒体２の下端に密着させ、筒体２の下部を塞ぐ。このように形成具１の一部を型枠６１内に配置した状態で固定する。また、取付手段４１により、型枠６１に対する形成具１の高さ及び位置を調整する。尚、全螺子ボルト３３の上部及び棒体２３の上部は、挿通孔２５から上部に突出しておく。   Then, an insertion hole 34 through which the rod 23 and the entire screw bolt 33 are inserted is formed at the distal end side of the horizontal arm portion 43, and the entire screw bolt 33 inserted through the insertion hole 34 is screwed into the lid 31. The nuts 36 are screwed into the holes 32, the nuts 36 are screwed into the upper portions of all the screw bolts 33, and the rod body 23 inserted through the insertion hole 35 is inserted between the recesses 21 and 22. In this case, as shown in FIG. 2, by inserting the rod 23 with the flat portion 24 facing inward and outward, and rotating the rod 23 approximately 90 degrees after the insertion, the arc-shaped portions 25, 25 are The rod body 23 faces inward and outward, presses the split piece 3 outward, and presses against the inner surface of the bending portion 12 in a state where the packing 15 is pressed. Further, by turning the nut 36, the lid 31 is brought into close contact with the lower end of the cylinder 2 and the lower part of the cylinder 2 is closed. In this way, a part of the forming tool 1 is fixed in a state of being disposed in the mold 61. Further, the height and position of the forming tool 1 with respect to the mold 61 are adjusted by the attaching means 41. In addition, the upper part of all the screw bolts 33 and the upper part of the rod body 23 protrude from the insertion hole 25 to the upper part.

この後、型枠６１内にコンクリート６５を充填し、コンクリート６５を養生したら、取付手段４１を取り外す。そして、横腕部３から上部に突出した平坦部２３Ｈを用いて、棒体２３を略９０度回転すると、図２に示すように、筒体２又は芯材４と棒体２３との間に隙間が生じ、図３に示すように、棒体２３を引き抜くことができ、図４のように、芯材４を上部に引き抜いた後、分割片３の他側を内側に押すことにより、コンクリート６５から分割片３を離型することができ、離型後、分割片３を上に引き抜く。   Thereafter, the concrete 65 is filled into the mold 61, and after the concrete 65 is cured, the attachment means 41 is removed. Then, when the rod body 23 is rotated by approximately 90 degrees using the flat portion 23H protruding upward from the lateral arm portion 3, as shown in FIG. 2, between the cylinder body 2 or the core material 4 and the rod body 23, As shown in FIG. 3, a gap is generated, and the rod body 23 can be pulled out. As shown in FIG. 4, after the core material 4 is pulled out upward, the other side of the divided piece 3 is pushed inward, thereby bringing the concrete into the concrete. The split piece 3 can be released from 65, and after release, the split piece 3 is pulled upward.

蓋体３１を引き抜く場合は、全螺子ボルト３３を螺合方向に回転することにより、全螺子ボルト３３がコンクリート６５を押して蓋体３１がコンクリート６５から離型する。この後、全螺子ボルト３３と供に蓋体３１を引き抜き、取付具１を取り外すことにより、コンクリート６５に取付孔６４が形成される。そして、この取付孔６４に手摺などの支柱（図示せず）を挿入配置し、取付孔６４に充填材を充填して支柱を固定する。尚、充填材としては、無収縮グラウト材やモルタルなどが例示され、支柱にはアルミニウム合金製のものが例示される。また、取付孔６４内には、支柱の下部以外、他の金属部品や支柱取付用のアンカーなどを配置したり、溶接したりすることはないが、鉄筋などを配筋してもよい。   When pulling out the lid 31, the entire screw bolt 33 is rotated in the screwing direction, so that the entire screw bolt 33 pushes the concrete 65 and the lid 31 is released from the concrete 65. Thereafter, the cover 31 is pulled out together with all the screw bolts 33 and the fixture 1 is removed, whereby the attachment hole 64 is formed in the concrete 65. A support post (not shown) such as a handrail is inserted into the attachment hole 64 and the support hole 64 is filled with a filler to fix the support post. In addition, as a filler, a non-shrink grout material, mortar, etc. are illustrated, and the thing made from an aluminum alloy is illustrated as a support | pillar. In addition, in the attachment hole 64, other than the lower part of the support column, other metal parts and anchors for mounting the support column are not arranged or welded, but a reinforcing bar or the like may be arranged.

このように本実施例では、請求項１に対応して、型枠６０内に配置され、コンクリート６５の打設後に取り外して支柱用の取付孔６４を形成する取付孔の形成具において、取付孔６４に対応する筒体２を複数に分割した分割片３と、分割片３の一側に設けられ隣合う分割片３の他側内面に当接する当接部１３と、筒体２内に着脱自在に挿入される芯材４と、この芯材４と分割片３とを位置決めする位置決め手段１９と、分割片３の当接部１３を隣合う分割片３の他側内面に当接するように芯材４と分割片３との間隔を調整する間隔調整手段たる棒体２３と、筒体２の下部を塞ぐ蓋体３１とを備えるから、芯材４を内部に挿入し、位置決め手段１９により分割片３，３・・・を筒状に配置し、棒体２３により分割片３の他側内面に隣合う分割片３の当接部１３を当接させて筒体２を組み立て、筒体２の下部を蓋体３１により塞いだ後、型枠６１内に配置し、型枠６１内にコンクリート６５を打設する。コンクリート６５が硬化したら、棒体２３により前記当接を解除し、筒体２内から芯材４を引き抜き、筒体２を縮小するようにして分割片３をコンクリート６５から離し、分割片３を引き抜き、必要に応じて蓋体３１を引き抜くことにより、コンクリート躯体に取付孔６４が形成される。この場合、形成具１は組み立てて繰り返し使用することができる。   Thus, in this embodiment, in accordance with the first aspect, in the mounting hole forming tool which is disposed in the mold 60 and is removed after the concrete 65 is placed to form the mounting hole 64 for the column, the mounting hole 64, a split piece 3 obtained by dividing the cylindrical body 2 into a plurality of parts, a contact portion 13 that is provided on one side of the split piece 3 and contacts the other inner surface of the adjacent split piece 3, and is attached to and detached from the cylindrical body 2 The core material 4 to be freely inserted, positioning means 19 for positioning the core material 4 and the divided piece 3, and the abutting portion 13 of the divided piece 3 are brought into contact with the other inner surface of the adjacent divided piece 3. Since the rod body 23 serving as an interval adjusting means for adjusting the interval between the core material 4 and the divided piece 3 and the lid body 31 closing the lower portion of the cylindrical body 2 are provided, the core material 4 is inserted into the interior, and the positioning means 19 The divided pieces 3, 3... Are arranged in a cylindrical shape, and the divided pieces adjacent to the other inner surface of the divided piece 3 by the rod body 23. Assembling the contact portion 13 cylindrical member 2 is brought into contact with the after plugged by the lid 31 to the lower portion of the cylindrical body 2, placed in a mold 61, for pouring concrete 65 into the mold 61. When the concrete 65 is hardened, the contact is released by the rod body 23, the core material 4 is pulled out from the cylinder 2, the cylinder 2 is reduced, the separated piece 3 is separated from the concrete 65, and the divided piece 3 is removed. By pulling out and pulling out the lid 31 as necessary, the mounting hole 64 is formed in the concrete frame. In this case, the forming tool 1 can be assembled and used repeatedly.

また、このように本実施例では、請求項２に対応して、位置決め手段１９は、分割片３の内面に設けられた分割片係合部１７と、芯材４に設けられ分割片係合部１７に係合する芯材係合部１８とからなるから、分割片係合部１７と芯材係合部１８との係合により、芯材４と分割片３とを位置決めすることができる。   Thus, in this embodiment, corresponding to claim 2, the positioning means 19 includes the divided piece engaging portion 17 provided on the inner surface of the divided piece 3, and the divided piece engaged provided on the core member 4. Since the core material engaging portion 18 is engaged with the portion 17, the core material 4 and the split piece 3 can be positioned by the engagement between the split piece engaging portion 17 and the core material engaging portion 18. .

また、このように本実施例では、請求項３に対応して、分割片係合部１７は、分割片３の他側に設けられているから、分割片係合部１７と芯材係合部１８との係合により、芯材に分割片３の他側を位置決めすることができる。   In this way, in this embodiment, since the split piece engaging portion 17 is provided on the other side of the split piece 3 in correspondence with the third aspect, the split piece engaging portion 17 and the core material are engaged. By engaging with the portion 18, the other side of the divided piece 3 can be positioned on the core member.

また、このように本実施例では、請求項４に対応して、間隔調整手段は、分割片３と芯材４の間に設けられ長軸方向と短軸方向とが交差する断面形状を有する棒体２３であるから、棒体２３を回すことにより、分割片３と芯材４との間隔を長軸方向の長さと短軸方向の長さに調整できる。   Thus, in this embodiment, in correspondence with claim 4, the distance adjusting means is provided between the segment piece 3 and the core member 4 and has a cross-sectional shape in which the major axis direction and the minor axis direction intersect. Since it is the rod body 23, the space | interval of the division piece 3 and the core material 4 can be adjusted to the length of a major axis direction, and the length of a minor axis direction by rotating the rod body 23. FIG.

また、このように本実施例では、請求項５に対応して、棒体２３は、長軸方向両側に円弧状部２５，２５を有し、この円弧状部２５に対応して芯材４の凹部たる芯材凹部２１を設けたから、円弧状部２５により棒体２３を円滑に回動操作することができる。   In this way, in this embodiment, corresponding to claim 5, the rod body 23 has arc-shaped portions 25, 25 on both sides in the long axis direction, and the core material 4 corresponds to the arc-shaped portion 25. Since the core material concave portion 21 as the concave portion is provided, the bar body 23 can be smoothly rotated by the arc-shaped portion 25.

また、このように本実施例では、請求項６に対応して、蓋体３１を、分割片３及び芯材４と別体に設け、蓋体３１を引き抜く引き抜き手段たる全螺子ボルト３３を設けたから、全螺子ボルト３３により蓋体３１を引き抜くことができる。   In this way, in this embodiment, corresponding to claim 6, the lid body 31 is provided separately from the divided piece 3 and the core material 4, and the whole screw bolt 33 is provided as a pulling means for pulling out the lid body 31. Therefore, the lid body 31 can be pulled out by all the screw bolts 33.

また、実施例上の効果として、芯材４が中空であるから、軽量で扱い易いものとなる。また、位置決め手段１９が分割片３の一側で、当接部１３及び分割片凹部２２が分割片３の他側であるから、棒体２３を操作することにより、分割片３の一側を支点とし、一側を内側に、他側を外側に移動せしめることができる。さらに、凹部形成部たる突出部２６を分割片３に設けたから、取付孔６４に凹部を形成でき、この凹部により取付孔６４に充填した充填材６５の取付孔６４への密着性を向上することができる。また、取付手段は、型枠に対して、形成具１の高さ及び前後左右の位置を調整可能なものであるから、所定位置に所定深さの取付孔を形成することができる。   Further, as an effect of the embodiment, since the core material 4 is hollow, it is light and easy to handle. Further, since the positioning means 19 is on one side of the divided piece 3 and the contact portion 13 and the divided piece concave portion 22 are on the other side of the divided piece 3, the one side of the divided piece 3 is moved by operating the rod body 23. The fulcrum can be moved from one side to the inside and the other side to the outside. Further, since the protruding portion 26 as the recess forming portion is provided in the divided piece 3, the recess can be formed in the mounting hole 64, and the adhesion of the filler 65 filled in the mounting hole 64 to the mounting hole 64 can be improved by this recess. Can do. Moreover, since the attachment means can adjust the height of the forming tool 1 and the front / rear / right / left positions with respect to the mold, an attachment hole having a predetermined depth can be formed at a predetermined position.

図９は、本発明の実施例２を示し、上記実施例１と同一部分に同一符号を付し、その詳細な説明を省略して詳述する。この例は、木製の型枠６１に形成具を固定する例を示し、この例の取付手段４１は、中央に突出部７１を有する横腕部４３を用い、この横腕部４３の両側を釘やビスなどの止着手段７２により前記鍔部６３，６３に固定し、これにより取付具１を型枠６１に固定する。   FIG. 9 shows a second embodiment of the present invention, in which the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. This example shows an example in which a forming tool is fixed to a wooden form 61, and the attachment means 41 of this example uses a horizontal arm portion 43 having a projecting portion 71 at the center, and nails are provided on both sides of the horizontal arm portion 43. It fixes to the said collar parts 63 and 63 by the fastening means 72, such as a screw | thread, and this fixes the fixture 1 to the mold 61.

このように本実施例においても、上記実施例と同様な作用・効果を奏し、この例の取付手段４１は、両側を両側の鍔部６３，６３に固定するから安定したものとなる。   Thus, also in this embodiment, the same operations and effects as in the above embodiment are achieved, and the attachment means 41 of this example is stable because both sides are fixed to the flange portions 63 and 63 on both sides.

図１０〜図１３は、本発明の実施例３を示し、上記実施例１と同一部分に同一符号を付し、その詳細な説明を省略して詳述する。この例は、断面円形の取付孔６４を形成する取付具１Ａを示し、筒体２及び芯材４がほぼ円形で、分割片３は全体が円弧状をなし、装着溝１６に装着したパッキン１５が分割片３の他側内面に当接し、隣り合う当接部１３，１３間のほぼ中央に前記凹部２１，２２が配置されている。   FIGS. 10-13 shows Example 3 of this invention, attaches | subjects the same code | symbol to the same part as the said Example 1, and abbreviate | omits the detailed description and explains in full detail. This example shows a mounting tool 1A that forms a mounting hole 64 having a circular cross section, the cylindrical body 2 and the core member 4 are substantially circular, the divided piece 3 is entirely arc-shaped, and the packing 15 mounted in the mounting groove 16 is shown. Comes into contact with the other inner surface of the split piece 3 and the concave portions 21 and 22 are arranged at substantially the center between the adjacent contact portions 13 and 13.

この例においても、上記実施例と同様に型枠６１内に取付具１Ａを挿入配置して取付手段４１により位置固定し、コンクリート６５を養生した後、棒体２３を引き抜き、芯材４を引き抜く。この場合、図１２に示すように、芯材４を回すことにより、係合部１７，１８の係合を解除することができるから、係合解除後、芯材４をスムーズに引き上げることができる。   Also in this example, the fixture 1A is inserted and arranged in the mold 61 and fixed by the attaching means 41, the concrete 65 is cured, and then the rod body 23 is pulled out and the core material 4 is pulled out. . In this case, as shown in FIG. 12, since the engagement of the engaging portions 17 and 18 can be released by turning the core material 4, the core material 4 can be pulled up smoothly after the engagement is released. .

図１４は、本発明の実施例４を示し、上記実施例１と同一部分に同一符号を付し、その詳細な説明を省略して詳述する。この例は、前記蓋体３１に針金などからなるＵ字型線材３７を設け、このＵ字型線材３７により引き抜き手段を構成している。   FIG. 14 shows a fourth embodiment of the present invention, in which the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. In this example, a U-shaped wire rod 37 made of a wire or the like is provided on the lid 31, and the U-shaped wire rod 37 constitutes a drawing means.

このように本実施例においても、上記各実施例と同様な作用・効果を奏し、この例では、Ｕ字型線材３７により蓋体３１を引き上げ易いものとなる。   As described above, this embodiment also has the same operations and effects as the above embodiments, and in this example, the lid 31 can be easily lifted by the U-shaped wire rod 37.

尚、本発明は、本実施例に限定されるものではなく、本発明の要旨の範囲内で種々の変形実施が可能である。例えば、実施例３の略円形を成す筒体の外周に、突出部を設けてもよい。また、突出部は筒体の長さ方向に間隔を置いて複数設けることができる。さらに、分割片凹部は、分割片の肉厚を内面側に僅かに大きくした部分に形成してもよい。また、引き抜き手段は、必ずしも全長に螺子部を設けた全螺子ボルトを用いる必要はなく、螺子孔３２とナット３６が螺合する部分に雄螺子部を有する棒状体であればよい。さらに、筒体は略正方形と円形に限らず、各種の多角形や楕円形などでもよい。また、取付孔の上部には、コーキング材を充填してもよい。   The present invention is not limited to this embodiment, and various modifications can be made within the scope of the gist of the present invention. For example, you may provide a protrusion part in the outer periphery of the cylindrical body which comprises the substantially circular shape of Example 3. FIG. A plurality of protrusions can be provided at intervals in the length direction of the cylinder. Furthermore, you may form a division piece recessed part in the part which made the thickness of the division piece slightly large in the inner surface side. Further, the pulling means does not necessarily need to use a full screw bolt having a screw part in its entire length, and may be a rod-like body having a male screw part at a portion where the screw hole 32 and the nut 36 are screwed together. Furthermore, the cylindrical body is not limited to a substantially square shape and a circular shape, and may be various polygonal shapes or elliptical shapes. Further, the upper portion of the attachment hole may be filled with a caulking material.

１ 取付具
２ 筒体
３ 分割片
４ 芯材
１３ 当接部
１７ 分割片係合部
１８ 芯材係合部
１９ 位置決め手段
２３ 棒体（調整手段）
３１ 蓋体
３３ 全螺子ボルト（引き上げ手段）
３７ Ｕ字型線材（引き抜き手段）
４１ 取付手段
４２ 伸縮腕部
４３ 横腕部
４４ 上腕部
６１ 型枠
６２ 型枠パネル
６３ 鍔部
６４ 取付孔 DESCRIPTION OF SYMBOLS 1 Attachment 2 Cylindrical body 3 Dividing piece 4 Core material 13 Contact part 17 Dividing piece engaging part 18 Core material engaging part 19 Positioning means 23 Rod (Adjusting means)
31 Lid 33 Full screw bolt (lifting means)
37 U-shaped wire (drawing means)
41 Attaching means 42 Telescopic arm part 43 Horizontal arm part 44 Upper arm part 61 Formwork 62 Formwork panel 63 Gutter part 64 Attachment hole

Claims (6)

型枠内に配置され、コンクリート打設後に取り外して支柱用の取付孔を形成する取付孔の形成具において、前記取付孔に対応する筒体を複数に分割した分割片と、前記分割片の一側に設けられ隣合う前記分割片の他側内面に当接する当接部と、前記筒体内に着脱自在に挿入される芯材と、この芯材と前記分割片とを位置決めする位置決め手段と、前記分割片の当接部を前記隣合う分割片の他側内面に当接するように前記芯材と前記分割片との間隔を調整する間隔調整手段と、前記筒体の下部を塞ぐ蓋体とを備えることを特徴とする取付孔の形成具。 In a mounting hole forming tool that is disposed in a mold and is removed after placing concrete to form a mounting hole for a column, a divided piece obtained by dividing a cylindrical body corresponding to the mounting hole into a plurality of pieces, and one of the divided pieces A contact portion that is provided on the side and contacts the other inner surface of the adjacent divided piece; a core material that is detachably inserted into the cylindrical body; and positioning means that positions the core material and the divided piece; An interval adjusting means for adjusting an interval between the core member and the divided piece so that an abutting portion of the divided piece comes into contact with the other inner surface of the adjacent divided piece; and a lid for closing a lower portion of the cylindrical body; A tool for forming a mounting hole, comprising: 前記位置決め手段は、前記分割片の内面に設けられた分割片係合部と、前記芯材に設けられ前記分割片係合部に係合する芯材係合部とからなることを特徴とする請求項１記載の取付孔の形成具。 The positioning means includes a split piece engaging portion provided on an inner surface of the split piece, and a core member engaging portion provided on the core member and engaged with the split piece engaging portion. The mounting hole forming tool according to claim 1. 前記分割片係合部は、前記分割片の他側に設けられていることを特徴とする請求項２記載の取付孔の形成具。 3. The mounting hole forming tool according to claim 2, wherein the divided piece engaging portion is provided on the other side of the divided piece. 前記間隔調整手段は、前記分割片と前記芯材の間に設けられ長軸方向と短軸方向とが交差する断面形状を有する棒体であることを特徴とする請求項３記載の取付孔の形成具。 The mounting hole according to claim 3, wherein the distance adjusting means is a rod body provided between the divided piece and the core member and having a cross-sectional shape in which a major axis direction and a minor axis direction intersect. Forming tool. 前記棒体は、前記長軸方向両側に円弧状部を有し、この円弧状部に対応して前記芯材に凹部を設けたことを特徴とする請求項４記載の取付孔の形成具。 5. The mounting hole forming tool according to claim 4, wherein the rod has an arcuate portion on both sides in the long axis direction, and a recess is provided in the core member corresponding to the arcuate portion. 前記蓋体を、前記分割片及び前期芯材と別体に設け、前記蓋体を引き抜く引き抜き手段を設けたことを特徴とする請求項１〜５のいずれか１項に記載の取付孔の形成具。 The attachment hole formation according to any one of claims 1 to 5, wherein the lid body is provided separately from the divided piece and the core material, and a drawing means for pulling out the lid body is provided. Ingredients.

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