JP4022170B2 - Metal fittings for reinforcing bars and separators - Google Patents

Metal fittings for reinforcing bars and separators Download PDF

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Publication number
JP4022170B2
JP4022170B2 JP2003142856A JP2003142856A JP4022170B2 JP 4022170 B2 JP4022170 B2 JP 4022170B2 JP 2003142856 A JP2003142856 A JP 2003142856A JP 2003142856 A JP2003142856 A JP 2003142856A JP 4022170 B2 JP4022170 B2 JP 4022170B2
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Japan
Prior art keywords
reinforcing bar
separator
screw
main body
hole
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JP2003142856A
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Japanese (ja)
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JP2004346553A (en
Inventor
徳夫 米谷
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株式会社国元商会
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Description

【0001】
【発明の属する技術分野】
本発明は、コンクリート構造物を築造する際に使用される鉄筋とセパレーターとの連結金具に関するものである。
【0002】
【従来の技術】
コンクリート型枠用セパレーターは、コンクリート打設空間を形成するコンクリート型枠を位置決めするためのもので、一般的には、コンクリート打設空間を挟むように配置された並列コンクリート型枠どうしを連結するように使用される。しかしながら、橋梁のように巾が非常に広いコンクリート打設空間が必要である場合、この巾の広いコンクリート打設空間を横断できる長尺のセパレーターを準備することは、コストがかかるだけでなく取り扱いも容易でない。このような場合、当該コンクリート打設空間に巾方向に沿って配設された鉄筋をセパレーターの一部として使用することが行われるが、このときに鉄筋と通常長さのセパレーターとを連結するための連結金具が必要になる。
【0003】
従来のこの種の連結金具は、特許文献などを示すことはできないが、鉄筋とこれに沿わせたセパレーターとをクランプ金具で締め付けて結合するタイプのものであり、締め付け力が十分でないと両者間に滑りが生じる恐れがあり、十分な結合強度を得ることが困難なものであった。
【0004】
【課題を解決するための手段】
本発明は上記のような従来の問題点を解消し得る鉄筋とセパレーターとの連結金具を提供することを目的とするものであって、その手段を後述する実施形態の参照符号を付して示すと、コの字形の本体1と締結ボルト2とから成り、本体1には、その左右両側板3,4それぞれの前縁から切込み形成された左右一対の鉄筋受け部7,8と、当該左右一対の鉄筋受け部7,8で支持される鉄筋13と平行な方向にセパレーター14,15の螺軸部14a,15aを螺合させるための、ねじ規格が異なる少なくとも2種類のねじ孔9,11とが設けられ、締結ボルト2は、本体1の天板部5に設けられた上下方向の貫通ねじ孔6を螺合貫通して、前記鉄筋13を左右一対の鉄筋受け部7,8側へ押圧固定する構成となっている。
【0005】
上記構成の本発明を実施する場合、前記2種類のねじ孔9,11は、本体左右両側板3,4それぞれに振り分けて設けることができる。この場合、前記2種類のねじ孔9,11は互いに同心状に設けることもできるが、前記2種類のねじ孔9,11を互いに位置をずらして設け、各ねじ孔9,11と同心状で当該ねじ孔9,11に螺合されるセパレーター14,15の挿通用貫通孔10,12を相手側の側板3,4に設けることが望ましい。
【0006】
又、前記各ねじ孔9,11及び各貫通孔10,12は、本体1の側面視において、前記締結ボルト2及び鉄筋受け部7,8のある位置に対して後側にずれた位置で上下に配置することができる。更に、前記ねじ孔9,11及び各貫通孔10,12は、外側へ突出する筒状壁9a〜12aを周囲に備えたバーリング加工孔で構成することができる。
【0007】
【発明の実施の形態】
以下に本発明の好適実施形態を添付図に基づいて説明すると、図1及び図2において、1はコの字形の本体であり、2は締結ボルトである。本体1は、その左右両側板3,4をつなぐ天板部5の前端寄り位置に外方に突出する筒状壁6aを備えたバーリング加工孔で構成された上下方向の貫通ねじ孔6が設けられ、この貫通ねじ孔6に締結ボルト2が螺合貫通せしめられている。
【0008】
本体1の左右両側板3,4には、締結ボルト2の真下左右両側に位置するように、その前縁から切込み形成された左右一対の鉄筋受け部7,8が設けられている。更に、本体1の一方の側板3には、外方に突出する筒状壁9aを備えたバーリング加工孔で構成された2分5厘(W5/16)径のセパレーター結合用ねじ孔9が鉄筋受け部7,8の位置に対して後側下方位置に設けられると共に、このねじ孔9の上方で且つ鉄筋受け部7,8よりも上方位置に、外方に突出する筒状壁10aを備えたバーリング加工孔で構成された3分(W3/8)径のセパレーターが挿通し得る貫通孔10が設けられ、本体1の他方の側板4には、前記貫通孔10と同心状で外方に突出する筒状壁11aを備えたバーリング加工孔で構成された3分(W3/8)径のセパレーター結合用ねじ孔11が設けられると共に、前記ねじ孔9と同心状で外方に突出する筒状壁12aを備えたバーリング加工孔で構成された2分5厘(W5/16)径のセパレーターが挿通し得る貫通孔12が設けられている。
【0009】
上記構成の連結金具は、図2に示すように、コンクリート打設空間の巾方向に沿った鉄筋13の端部近傍適当箇所に本体1の左右一対の鉄筋受け部7,8を嵌合させた状態で締結ボルト2を締め付けることにより、当該締結ボルト2で鉄筋13を左右一対の鉄筋受け部7,8の方へ押圧させ、3点支持状態で本体1を鉄筋13に安定的に固定することができる。而して、外端側でコンクリート型枠を位置決めするセパレーターは、それが3分径の内端螺軸部14aを有する大径セパレーター14であるときは、図2に示すように、本体1の取り付け向きに応じて直接又は貫通孔10を経由させてねじ孔11に内端螺軸部14aを螺合連結し、セパレーターが2分5厘径の内端螺軸部15aを有する小径セパレーター15であるときは、本体1の取り付け向きに応じて直接又は貫通孔12を経由させてねじ孔9に内端螺軸部14aを螺合連結することができる。勿論、セパレーター14又は15の位置は、鉄筋13の周りに本体1を回転させることにより当該鉄筋13の周方向に調整することができる。
【0010】
尚、上記実施形態では、2分5厘径のねじ孔9と3分径のねじ孔11とを設けたが、ねじ規格はこの2種類に限定されない。勿論、ねじ規格も2種類に限定されるわけではなく、3種類又はそれ以上であっても良い。又、基本的には、片側の側板3又は4に複数種類のねじ規格のねじ孔(例えばねじ孔9,11)を設け、必要に応じて他方の側板4又は3に、各ねじ孔と同心状のセパレーター挿通用貫通孔(例えば貫通孔10,12)を設けることも可能である。
【0011】
更に、図3に示すように、2種類のねじ規格のねじ孔9,11を本体1の左右両側板3,4に同心状に振り分けて設けることもできる。この場合は、小径セパレーター15が大径セパレーター14用のねじ孔11に挿通させることができるときのみ、小径セパレーター15は、本体1の左右何れ側からもねじ孔9を利用して本体1に螺合連結させることができるが、大径セパレーター14は、ねじ孔11が設けられている側からのみ本体1に螺合連結させることができる。
【0012】
【発明の効果】
本発明は以上のように実施し且つ使用することが出来るものであって、係る本発明の鉄筋とセパレーターとの連結金具によれば、巾の広いコンクリート打設空間の巾方向に配設されている鉄筋にコンクリート型枠をセパレーターを介して簡単容易に連結することができ、長尺のセパレーターを使用しなければならない場合と比較してコンクリート型枠の組み立てコストを下げることができるのであるが、特に本発明の構成によれば、鉄筋に対しては本体を、締結ボルトを使用して3点支持の状態に強固に固定することができ、この本体に対するセパレーターの連結は、セパレーターが備える螺軸部を利用するねじ結合によるものであるから、全体として鉄筋に対してセパレーターを強固に結合することができ、安全性の高いコンクリート型枠を組み立てることができる。しかも、本体にはねじ規格の異なる少なくとも2種類のセパレーター結合用ねじ孔が設けられているので、ねじ規格(太さ)の異なる少なくとも2種類のセパレーターを利用することができ、汎用性も高い。
【0013】
尚、請求項2に記載の構成によれば、本体左右両側板の片側にのみ2種類のねじ孔が設けられる場合と比較して、本体側板の強度のバランスが良く、安全性が高められる。この場合、請求項3に記載の構成によれば、ねじ規格の異なる2種類のセパレーターの何れを使用する場合でも、強度面でほぼ同一の条件となり、ねじ規格の異なる2種類のセパレーターの何れもを安全に利用することができる。
【0014】
更に、請求項4に記載の構成によれば、ねじ規格の異なる2種類のセパレーターの何れを使用する場合でも、これらセパレーターを本体の左右何れ側からでもねじ結合することができ、鉄筋に本体を取り付ける際に本体の取り付け向きを考慮する必要がなくなり、容易且つ能率よく使用することができる。この場合、請求項5に記載の構成によれば、本体全体を強度面でバランス良く構成することができる。更に、請求項6に記載の構成によれば、多数の孔加工による本体の強度低下を抑えることができる。
【図面の簡単な説明】
【図1】 A図は側面図、B図は正面図、C図は平面図である。
【図2】 A図は使用状態を示す鉄筋位置での縦断正面図、B図は同縦断側面図、C図は同セパレーター位置での縦断正面図である。
【図3】 変形例を示す要部の縦断正面図である。
【符号の説明】
1 コの字形の本体
2 締結ボルト
3,4 本体左右両側板
5 本体天板部
6 貫通ねじ孔
7,8 鉄筋受け部
9,11 セパレーター結合用ねじ孔
10,12 セパレーター挿通用貫通孔
9a〜12a 筒状壁
13 鉄筋
14,15 セパレーター
14a,15a セパレーターの螺軸部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connecting metal fitting of a reinforcing bar and a separator used when building a concrete structure.
[0002]
[Prior art]
The separator for concrete formwork is for positioning the concrete formwork forming the concrete placement space, and generally, the parallel concrete formwork arranged so as to sandwich the concrete placement space is connected. Used for. However, when a concrete placement space with a very wide width such as a bridge is required, preparing a long separator that can cross this wide concrete placement space is not only costly but also easy to handle. Not easy. In such a case, the reinforcing bars arranged along the width direction in the concrete placement space are used as a part of the separator. At this time, in order to connect the reinforcing bars and the separator having a normal length, Connecting brackets are required.
[0003]
Although this type of conventional connecting bracket cannot show patent documents, it is of a type in which a reinforcing bar and a separator along the same are tightened and connected with a clamp bracket. Slippage may occur, and it was difficult to obtain sufficient bond strength.
[0004]
[Means for Solving the Problems]
An object of the present invention is to provide a connecting metal fitting between a reinforcing bar and a separator that can solve the above-described conventional problems, and the means thereof is shown with reference numerals of embodiments to be described later. And a U-shaped main body 1 and a fastening bolt 2. The main body 1 includes a pair of left and right reinforcing bar receiving portions 7 and 8 formed by cutting from the front edges of the left and right side plates 3 and 4, respectively, At least two types of screw holes 9 and 11 having different screw specifications for screwing the screw shaft portions 14a and 15a of the separators 14 and 15 in a direction parallel to the reinforcing bars 13 supported by the pair of reinforcing bar receiving portions 7 and 8 are provided. The fastening bolt 2 is threaded through a vertical through screw hole 6 provided in the top plate portion 5 of the main body 1 so that the reinforcing bar 13 is moved to the pair of left and right reinforcing bar receiving portions 7 and 8. It is configured to be pressed and fixed.
[0005]
When the present invention having the above-described configuration is implemented, the two types of screw holes 9 and 11 can be provided separately on the left and right side plates 3 and 4 of the main body. In this case, the two types of screw holes 9 and 11 may be provided concentrically with each other, but the two types of screw holes 9 and 11 are provided with their positions shifted from each other and are concentric with the screw holes 9 and 11. It is desirable to provide the through holes 10 and 12 for insertion of the separators 14 and 15 screwed into the screw holes 9 and 11 in the side plates 3 and 4 on the other side.
[0006]
The screw holes 9 and 11 and the through holes 10 and 12 are vertically moved at positions shifted rearward with respect to the positions of the fastening bolt 2 and the reinforcing bar receiving portions 7 and 8 in a side view of the main body 1. Can be arranged. Furthermore, the screw holes 9 and 11 and the through holes 10 and 12 can be configured as burring holes provided with cylindrical walls 9a to 12a projecting outward.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, 1 is a U-shaped body, and 2 is a fastening bolt. The main body 1 is provided with a through screw hole 6 in the vertical direction composed of a burring hole provided with a cylindrical wall 6a projecting outward at a position near the front end of the top plate portion 5 connecting the left and right side plates 3 and 4. The fastening bolt 2 is screwed through the through screw hole 6.
[0008]
The left and right side plates 3, 4 of the main body 1 are provided with a pair of left and right reinforcing bar receiving portions 7, 8 formed by cutting from the front edge thereof so as to be located on both the right and left sides directly below the fastening bolt 2. Further, one side plate 3 of the main body 1 has a separator coupling screw hole 9 having a diameter of 2/5 mm (W5 / 16) formed of a burring hole provided with a cylindrical wall 9a protruding outward. A cylindrical wall 10a is provided at a rear lower position with respect to the positions of the receiving portions 7 and 8 and protrudes outwardly above the screw hole 9 and above the reinforcing bar receiving portions 7 and 8. A through-hole 10 through which a three-minute (W3 / 8) diameter separator composed of burring holes is inserted is provided, and the other side plate 4 of the main body 1 is concentric with the through-hole 10 and outward. A cylinder coupling screw hole 11 having a three-minute (W3 / 8) diameter formed by a burring hole provided with a protruding cylindrical wall 11a is provided, and is a concentric with the screw hole 9 and protrudes outward. 2 / 5mm composed of burring holes with wall 12a Through holes 12 are provided W5 / 16) diameter separator may be inserted.
[0009]
As shown in FIG. 2, the connection fitting having the above-described configuration is configured such that the pair of left and right reinforcing bar receiving portions 7 and 8 of the main body 1 are fitted at appropriate positions near the end of the reinforcing bar 13 along the width direction of the concrete placing space. By tightening the fastening bolt 2 in the state, the reinforcing bar 13 is pressed toward the pair of left and right reinforcing bar receiving portions 7 and 8 by the fastening bolt 2, and the main body 1 is stably fixed to the reinforcing bar 13 in a three-point support state. Can do. Thus, when the separator for positioning the concrete formwork on the outer end side is a large-diameter separator 14 having an inner end screw shaft portion 14a having a three-divided diameter, as shown in FIG. A small-diameter separator 15 in which the inner end screw shaft portion 14a is screwed and connected to the screw hole 11 directly or through the through hole 10 depending on the mounting direction, and the separator has an inner end screw shaft portion 15a having a diameter of 2/5. In some cases, the inner end screw shaft portion 14 a can be screwed and connected to the screw hole 9 directly or via the through hole 12 according to the mounting direction of the main body 1. Of course, the position of the separator 14 or 15 can be adjusted in the circumferential direction of the reinforcing bar 13 by rotating the main body 1 around the reinforcing bar 13.
[0010]
In the embodiment described above, the screw hole 9 having a diameter of 2/5 and a diameter of 5 and the screw hole 11 having a diameter of 3/4 are provided. Of course, the screw standard is not limited to two types, and may be three types or more. Basically, a plurality of types of screw holes (for example, screw holes 9 and 11) are provided in one side plate 3 or 4 and, if necessary, the other side plate 4 or 3 is concentric with each screw hole. It is also possible to provide a through-hole for inserting a separator (for example, through-holes 10 and 12).
[0011]
Furthermore, as shown in FIG. 3, two types of screw holes 9 and 11 of the screw standard can be concentrically provided on the left and right side plates 3 and 4 of the main body 1. In this case, only when the small-diameter separator 15 can be inserted into the screw hole 11 for the large-diameter separator 14, the small-diameter separator 15 is screwed into the main body 1 using the screw holes 9 from either the left or right side of the main body 1. The large-diameter separator 14 can be screwed and connected to the main body 1 only from the side where the screw hole 11 is provided.
[0012]
【The invention's effect】
The present invention can be implemented and used as described above, and according to the connecting metal fitting of the reinforcing bar and the separator according to the present invention, it is arranged in the width direction of a wide concrete placing space. The concrete formwork can be easily and easily connected to the reinforcing bars through the separator, and the assembly cost of the concrete formwork can be reduced compared to the case where a long separator must be used. In particular, according to the configuration of the present invention, the main body can be firmly fixed to the reinforcing bar in a three-point support state by using a fastening bolt, and the separator is connected to the main body by a screw shaft included in the separator. Because it is due to the screw connection that uses the part, the separator can be firmly bonded to the rebar as a whole, and a highly safe concrete formwork It can be assembled. In addition, since the body is provided with at least two types of separator coupling screw holes having different screw standards, at least two types of separators having different screw standards (thicknesses) can be used, and versatility is high.
[0013]
In addition, according to the structure of Claim 2, compared with the case where two types of screw holes are provided only on one side of the left and right side plates of the main body, the strength balance of the main body side plates is good and safety is improved. In this case, according to the configuration of the third aspect, even when any of the two types of separators having different screw standards is used, the conditions are almost the same in terms of strength, and both of the two types of separators having different screw standards are used. Can be used safely.
[0014]
Furthermore, according to the structure of Claim 4, even when using any of two types of separators with different screw standards, these separators can be screw-coupled from either the left or right side of the main body, and the main body is attached to the reinforcing bar. When attaching, it is not necessary to consider the direction of attachment of the main body, and it can be used easily and efficiently. In this case, according to the structure of Claim 5, the whole main body can be comprised with sufficient balance in strength. Furthermore, according to the structure of Claim 6, the strength fall of the main body by many hole processing can be suppressed.
[Brief description of the drawings]
FIG. 1A is a side view, FIG. 1B is a front view, and FIG. 1C is a plan view.
FIG. 2A is a longitudinal front view at a reinforcing bar position showing a use state, FIG. 2B is a longitudinal side view thereof, and FIG. 2C is a longitudinal front view at the separator position;
FIG. 3 is a longitudinal front view of a main part showing a modification.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 U-shaped main body 2 Fastening bolts 3, 4 Left and right side plates 5 Main body top plate portion 6 Through screw holes 7, 8 Reinforcing bar receiving portions 9, 11 Separator coupling screw holes 10, 12 Separator insertion through holes 9a to 12a Cylindrical wall 13 Reinforcing bars 14, 15 Separator 14a, 15a Screw shaft portion of separator

Claims (6)

コの字形の本体と締結ボルトとから成り、本体には、その左右両側板それぞれの前縁から切込み形成された左右一対の鉄筋受け部と、当該左右一対の鉄筋受け部で支持される鉄筋と平行な方向にセパレーターの螺軸部を螺合させるための、ねじ規格が異なる少なくとも2種類のねじ孔とが設けられ、締結ボルトは、本体の天板部に設けられた上下方向の貫通ねじ孔を螺合貫通して、前記鉄筋を左右一対の鉄筋受け部側へ押圧固定する、鉄筋とセパレーターとの連結金具。It consists of a U-shaped main body and a fastening bolt, and the main body includes a pair of left and right reinforcing bar receiving portions formed by cutting from the front edges of the left and right side plates, and a reinforcing bar supported by the pair of left and right reinforcing bar receiving portions. There are provided at least two types of screw holes with different screw specifications for screwing the screw shafts of the separator in parallel directions, and the fastening bolts are through screw holes in the vertical direction provided in the top plate part of the main body. A connecting fitting of a reinforcing bar and a separator, which is screwed and penetrated to press and fix the reinforcing bar to the pair of left and right reinforcing bar receiving portions. 前記2種類のねじ孔が、本体左右両側板それぞれに振り分けて設けられている、請求項1に記載の鉄筋とセパレーターとの連結金具。The rebar / separator fitting according to claim 1, wherein the two types of screw holes are provided separately on the left and right side plates of the main body. 前記2種類のねじ孔は互いに同心状に設けられている、請求項2に記載の鉄筋とセパレーターとの連結金具。The connecting bracket of the reinforcing bar and the separator according to claim 2, wherein the two types of screw holes are provided concentrically with each other. 前記2種類のねじ孔は互いに位置がずらされており、各ねじ孔と同心状で当該ねじ孔に螺合されるセパレーターの挿通用貫通孔が相手側の側板に設けられている、請求項2に記載の鉄筋とセパレーターとの連結金具。The two types of screw holes are displaced from each other, and a through-hole for insertion of a separator concentrically with each screw hole and screwed into the screw hole is provided in a mating side plate. Metal fittings for reinforcing bars and separators. 前記各ねじ孔及び各貫通孔は、本体の側面視において、前記締結ボルト及び鉄筋受け部のある位置に対して後側にずれた位置で上下に配置されている、請求項4に記載の鉄筋とセパレーターとの連結金具。5. The reinforcing bar according to claim 4, wherein the screw holes and the through holes are vertically arranged at positions shifted rearward with respect to a position where the fastening bolt and the reinforcing bar receiving part are located in a side view of the main body. Connecting bracket with separator. 前記ねじ孔及び各貫通孔は、外側へ突出する筒状壁を周囲に備えたバーリング加工孔で構成されている、請求項4又は5に記載の鉄筋とセパレーターとの連結金具。The said screw hole and each through-hole are the metal fittings of the reinforcing bar and separator of Claim 4 or 5 comprised by the burring hole provided with the cylindrical wall which protrudes outside.
JP2003142856A 2003-05-21 2003-05-21 Metal fittings for reinforcing bars and separators Expired - Lifetime JP4022170B2 (en)

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Publication number Priority date Publication date Assignee Title
JP4833866B2 (en) * 2007-01-11 2011-12-07 株式会社国元商会 Separator mounting bracket
JP4928411B2 (en) * 2007-10-26 2012-05-09 株式会社国元商会 Top point
CN116084624B (en) * 2023-02-17 2023-10-20 江苏新苏阳建设有限公司 Energy-saving assembled building wall

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