JP4309239B2

JP4309239B2 - Concrete buried support structure and concrete buried structure

Info

Publication number: JP4309239B2
Application number: JP2003414976A
Authority: JP
Inventors: 真之安田
Original assignee: Mirai Industry Co Ltd
Current assignee: Mirai Industry Co Ltd
Priority date: 2003-12-12
Filing date: 2003-12-12
Publication date: 2009-08-05
Anticipated expiration: 2023-12-12
Also published as: JP2005171665A

Description

本発明は、コンクリート構築物の支骨となる鉄筋に取着した支持バーにコンクリート埋設物を支持するコンクリート埋設物支持構造、並びに、そのコンクリート埋設物に関するものである。 The present invention relates to a concrete buried support structure for supporting a concrete buried object on a support bar attached to a reinforcing bar serving as a supporting frame of the concrete structure, and the concrete buried object.

下記特許文献１では、コンクリート埋設物であるボックス１０に各突起１１が切り起こされて形成され、それらの突起１１内に各線材２０が挿通され、それらの線材２０が鉄筋Ｓに固定されるとともに、このボックス１０が型枠Ｋに対し各線材２０の弾性力により押圧される。その際、ボックス１０が各線材２０の軸線回りで回動するのを規制するとともに軸線方向へ移動するのを規制するために、各突起１１を押し潰して各線材２０をかしめている。
特開平３−１７３３１号公報 In the following Patent Document 1, each protrusion 11 is formed by being cut and raised in a box 10 that is a concrete buried object, and each wire 20 is inserted into the protrusion 11, and the wire 20 is fixed to the reinforcing bar S. The box 10 is pressed against the formwork K by the elastic force of each wire 20. At this time, in order to restrict the box 10 from rotating around the axis of each wire 20 and to move in the axial direction, each protrusion 20 is crushed and each wire 20 is caulked.
JP-A-3-17331

しかし、各突起１１を押し潰して各線材２０を十分な力でかしめる作業は大変面倒であった。このように単に各突起１１を押し潰して各線材２０をかしめるだけでは、各線材２０に対する各突起１１の緩みが生じ易く、しかも一般に各線材２０は回動し易い丸棒であるため、ボックス１０の動きを確実に規制することは難しく、コンクリートの打設圧に耐え得るだけの力でボックス１０を固定することはできなかった。 However, the operation of crushing each protrusion 11 and caulking each wire 20 with sufficient force is very troublesome. By simply crushing the protrusions 11 and caulking the wire rods 20 in this way, the protrusions 11 are easily loosened with respect to the wire rods 20, and generally the wire rods 20 are round bars that are easy to rotate. It was difficult to reliably control the movement of the box 10, and the box 10 could not be fixed with a force sufficient to withstand the concrete pouring pressure.

また、ボックス１０の各突起１１に各線材２０を挿通した状態で各線材２０の両側はボックス１０の両側から突出し、それらの突出寸法を互いに略等しくして、各線材２０を鉄筋Ｓに固定した際にボックス１０を良好な状態で支持し得るようにしている。ところが、ボックス１０が各線材２０の軸線方向へ不用意に移動すると、これらの突出寸法に差が生じたことに気付かないまま各線材２０を鉄筋Ｓに固定するおそれがあるため、ボックス１０を良好な状態で支持することが困難になるばかりではなく、たとえ突出寸法の差に気付いたとしてもこれらの突出寸法を互いに略等しくする調節作業も面倒であった。 Further, in a state where the wire rods 20 are inserted into the protrusions 11 of the box 10, both sides of the wire rods 20 protrude from both sides of the box 10, and their protruding dimensions are substantially equal to each other, and the wire rods 20 are fixed to the reinforcing bars S. At this time, the box 10 can be supported in a good condition. However, if the box 10 is inadvertently moved in the axial direction of each wire 20, there is a risk of fixing each wire 20 to the reinforcing bar S without noticing that a difference in the protruding dimensions has occurred. In addition to being difficult to support in this state, even if a difference in protrusion dimensions is noticed, adjustment work for making these protrusion dimensions substantially equal to each other is troublesome.

さらに、ボックス１０が各線材２０の軸線回りで不用意に回動すると、ボックス１０の向きが傾いていることに気付かないまま各線材２０を鉄筋Ｓに固定するおそれがあるため、ボックス１０を良好な状態で支持することが困難になるばかりではなく、たとえボックス１０の傾斜に気付いたとしてもその向きをする調節作業も面倒であった。 Furthermore, if the box 10 is inadvertently rotated around the axis of each wire 20, the box 10 may be fixed because the wire 20 may be fixed to the reinforcing bar S without noticing that the direction of the box 10 is inclined. Not only is it difficult to support in a difficult state, but even if the inclination of the box 10 is noticed, the adjustment work for turning the box 10 is troublesome.

この発明は、簡単な作業により金属製コンクリート埋設物を良好な状態で支持することができるコンクリート埋設物支持構造、並びに、簡単な作業により良好な状態で支持することができる金属製コンクリート埋設物を提供することを目的としている。 The present invention provides a concrete buried support structure that can support a metal concrete buried object in a good state by a simple operation, and a metal concrete buried object that can be supported in a good state by a simple work. It is intended to provide.

後記実施形態の図面（図１〜５）の符号を援用して本発明を説明する。
請求項１の発明にかかるコンクリート埋設物支持構造は下記のように構成されている。
このコンクリート埋設物支持構造においては、金属からなるコンクリート埋設物（例えば、配線ボックス１の場合、ボックス本体ばかりではなく、そのボックス本体に取り付けられるカバーや配線接続部材などの付属物も含む概念）を支持バー（１０）により支持する。この支持バー（１０）の一端部（１１）と他端部（１２）との間に係合部（１６）を有する係合突部（係合突起１５）を設けるとともに、このコンクリート埋設物（１）には、そのコンクリート埋設物（１）の壁（２）を切り起こすことにより、この壁（２）に形成した貫通孔（４）に面して壁（２）から突出する膨出部（５）を有する挿通部（３）を設けている。このコンクリート埋設物（１）の挿通部（３）の膨出部（５）の内側に形成した支持孔（６）には、この挿通部（３）に挿通された支持バー（１０）の係合突部（１５）の全部または一部が挿入されてその係合突部（１５）が当接し得る被係合部（被係合面９）を設けている。前記コンクリート埋設物（１）の挿通部（３）で膨出部（５）内の支持孔（６）は支持バー（１０）が挿通し得る両側の開口（７，８）を有し、この支持孔（６）内の被係合部（９）はこの両開口（７，８）間に形成されている。その場合、被係合部（９）を両開口（７，８）間の全部に設けてもよいし一部に設けてもよい。例えば、コンクリート埋設物（１）は少なくとも一対の挿通部（３）を有し、その両挿通部（３）のうち一方の挿通部（３）から一本の支持バー（１０）を挿通する。この両挿通部（３）で両側の開口（７，８）は、大径開口（７）と小径開口（８）とを有し、それらの小径開口（８）が相対向し、それらの大径開口（７）のうちいずれかの大径開口（７）から一本の支持バー（１０）を挿通する。前記支持孔（６）内の被係合部（９）は、両開口（７，８）のうち一方の開口（７）側から他方の開口（８）側に至るほど、両開口（７，８）を結ぶ中心線（６ａ）に対し接近するように傾斜している。その場合、傾斜状の被係合部（９）は、一方の開口（７）側の一端部と他方の開口（８）側の他端部とを結ぶ想定面や、その想定面に対し凹む凹面や、その想定面に対し膨らむ凸面や、その想定面に沿って並設した複数の係合段差部などが、全体として、一方の開口（７）側から他方の開口（８）側に至るほど両開口（７，８）を結ぶ中心線（６ａ）に対し接近するように傾斜しているものすべてを含む概念である。この支持バー（１０）の係合突部（１５）に対するこのコンクリート埋設物（１）の被係合部（９）の係合により、このコンクリート埋設物（１）がこの支持バー（１０）に対し支持バー（１０）の軸線（１０ａ）回りで回動するのを規制するとともに、前記係合突部（１５）の係合部（１６）が前記他方の開口（８）側の被係合部（９）に係合することにより、このコンクリート埋設物（１）がこの支持バー（１０）に対する挿通向き（ＸａまたはＸｂ）へ移動するのを規制する。例えば、配線ボックス（１）の場合、後記実施形態のように裏壁（２）に各挿通部（３）を設けてもよいし、この裏壁（２）の外周全体に設けた周壁のうち相対向する両側壁にそれぞれ一対の挿通部（３）を設けて、その両側壁の両挿通部（３）にそれぞれ一本の支持バー（１０）を挿通してもよい。 The present invention will be described with reference to the reference numerals of the drawings (FIGS. 1 to 5) of the embodiments described later.
The concrete buried support structure according to the invention of claim 1 is configured as follows.
In this concrete buried object support structure, a concrete buried object made of metal (for example, in the case of the wiring box 1, not only the box body but also a concept including an accessory such as a cover attached to the box body and a wiring connecting member) is used. It is supported by a support bar (10). An engagement protrusion (engagement protrusion 15) having an engagement portion (16 ) is provided between one end (11) and the other end (12) of the support bar (10), and the concrete embedded object ( In 1), the wall (2) of the concrete buried object (1) is cut and raised to face the through hole (4) formed in the wall (2) and project from the wall (2). An insertion portion (3) having (5) is provided. In the support hole (6) formed inside the bulging portion (5) of the insertion portion (3) of the concrete embedded object (1), the support bar (10) inserted into the insertion portion (3) is engaged. An engaged portion (engaged surface 9) is provided in which all or part of the mating protrusion (15) is inserted and the engaging protrusion (15) can come into contact therewith. The support hole (6) in the bulging part (5) in the insertion part (3) of the concrete buried object (1) has openings (7, 8) on both sides through which the support bar (10) can be inserted. The engaged portion (9) in the support hole (6) is formed between the openings (7, 8). In that case, the engaged part (9) may be provided in the whole between both openings (7, 8), or may be provided in a part. For example, the embedded concrete (1) has at least a pair of insertion portions (3), and one support bar (10) is inserted from one insertion portion (3) of the insertion portions (3). The openings (7, 8) on both sides of the both insertion portions (3) have a large-diameter opening (7) and a small-diameter opening (8). One support bar (10) is inserted from any one of the large-diameter openings (7) among the radial openings (7). The engaged portion (9) in the support hole (6) has both openings (7, 8) from the opening (7) side to the other opening (8) side of the openings (7, 8). 8) It inclines so that it may approach with respect to the centerline (6a) which connects. In that case, the inclined engaged portion (9) is recessed with respect to an assumed surface connecting one end portion on the one opening (7) side and the other end portion on the other opening (8) side, or the assumed surface. A concave surface, a convex surface that swells with respect to the assumed surface, and a plurality of engaging stepped portions arranged in parallel along the assumed surface reach the other opening (8) side from one opening (7) side as a whole. It is a concept including all that are inclined so as to approach the center line (6a) connecting both openings (7, 8). By engaging the engaged portion (9) of the concrete embedded object (1) with the engaging protrusion (15) of the support bar (10), the concrete embedded object (1) is attached to the support bar (10). In contrast, the rotation of the support bar (10) around the axis (10a) is restricted, and the engagement portion (16) of the engagement protrusion (15) is engaged on the other opening (8) side. By engaging the portion (9), the concrete embedded object (1) is restricted from moving in the insertion direction (Xa or Xb) with respect to the support bar (10). For example, in the case of the wiring box (1), each insertion portion (3) may be provided on the back wall (2) as in the embodiment described later, and among the peripheral walls provided on the entire outer periphery of the back wall (2) A pair of insertion portions (3) may be provided on both opposite side walls, and one support bar (10) may be inserted into each of the insertion portions (3) on both side walls.

請求項１の発明では、金属からなるコンクリート埋設物（１）に対し挿通部（３）を切り起こしにより容易に形成することができる。また、支持バー（１０）に対しコンクリート埋設物（１）を正しい位置（前記係合突部としての係合突起１５と前記被係合部としての被係合面９とが互いに当接する位置）に積極的に設定して位置決めした状態のままで、支持バー（１０）を鉄筋(１９)に取着することができる。従って、コンクリート埋設物（１）の動きを確実に規制してコンクリート埋設物（１）を良好な状態で支持することができる。また、挿通部（３）の被係合部（９）を簡単な構造にすることができる。さらに、被係合部（９）が傾斜しているので、支持バー（１０）の係合突部（１５）と挿通部（３）の膨出部（５）との間に製造誤差が生じても、支持バー（１０）の係合突部（１５）に挿通部（３）の被係合部（９）を確実に係合させて移動規制や回動規制として機能させることができる。従って、金属からなるコンクリート埋設物（１）に挿通部（３）を切り起こしにより形成する場合に適している。 In invention of Claim 1, the insertion part (3) can be easily formed by cutting and raising with respect to the concrete embedment (1) made of metal. The position where the engaging surface 9 comes into contact with one another as the engaged portion and the engagement projections 15 of the concrete buried objects to supporting lifting bar (10) to (1) as the correct position (the engagement projection The support bar (10) can be attached to the reinforcing bar (19) in the state of being positively set and positioned. Therefore, the movement of the concrete embedded object (1) can be reliably regulated and the concrete embedded object (1) can be supported in a good state. Moreover, the engaged part (9) of the insertion part (3) can be made into a simple structure. Further, since the engaged portion (9) is inclined, a manufacturing error occurs between the engaging protrusion (15) of the support bar (10) and the bulging portion (5) of the insertion portion (3). Even so, the engaged portion (9) of the insertion portion (3) can be reliably engaged with the engaging protrusion (15) of the support bar (10) to function as movement restriction or rotation restriction. Therefore, it is suitable for the case where the insertion part (3) is formed by cutting and raising the concrete buried object (1) made of metal.

請求項１の発明を前提とする請求項２の発明においては、前記支持バー（１０）の一端部（１１）側がコンクリート埋設物（１）から突出する寸法（Ｌ１１）と、前記支持バー（１０）の他端部（１２）側がコンクリート埋設物（１）から突出する寸法（Ｌ１２）とを互いに等しくした。請求項２の発明では、支持バー（１０）の両端部（１１，１２）を鉄筋(１９)に取着する際、コンクリート埋設物（１）を良好な状態で支持し易くなる。この場合、一端部（１１）側の寸法（Ｌ１１）と他端部（１２）側の寸法（Ｌ１２）とは完全に同一でなくてもよく、上記効果を奏する範囲で若干相違していてもよい。 In the invention of claim 2 premised on the invention of claim 1, the dimension (L11) at which one end (11) side of the support bar (10) protrudes from the concrete embedded object (1), and the support bar (10 ) And the dimension (L12) at which the other end (12) side protrudes from the concrete embedded object (1). In invention of Claim 2, when attaching both ends (11, 12) of a support bar (10) to a reinforcing bar (19), it becomes easy to support a concrete embedment (1) in a good state. In this case, the dimension (L11) on the one end portion (11) side and the dimension (L12) on the other end portion (12) side may not be completely the same, and may be slightly different within the range where the above-described effects are exhibited. Good.

請求項１の発明を前提とする請求項３の発明において、前記支持バー（１０）は前記膨出部（５）の両開口（７，８）に挿通し得る棒状部（１３）を主体とし、この支持バー（１０）の係合突部（１５）は、この棒状部（１３）から突出するように形成され、この両開口（７，８）のうち一方の開口（７）から挿入されて前記支持孔（６）内の被係合部（９）に当接し得る。また、請求項３の発明を前提とする請求項４の発明において、前記支持バー（１０）の係合突部（１５）は、前記棒状部（１３）を押し潰して成形した圧潰部（１４）に形成されている。請求項５〜６の発明では、支持バー（１０）の係合突部（１５）を簡単な構造にすることができる。 In the invention of claim 3 that assumes the invention of claim 1, wherein the support bar (10) is mainly composed of rod-shaped portion (13) which can be inserted in both openings (7, 8) of the bulge portion (5) The engaging protrusion (15) of the support bar (10) is formed so as to protrude from the rod-like part (13), and is inserted from one of the openings (7, 8) (7). Thus, it can come into contact with the engaged portion (9) in the support hole (6). Further, in the invention of claim 4 based on the invention of claim 3 , the engagement protrusion (15) of the support bar (10) is a crushing part (14) formed by crushing the rod-like part (13). ). According to the fifth to sixth aspects of the present invention, the engagement protrusion (15) of the support bar (10) can have a simple structure.

請求項１から請求項４のうちいずれかの請求項の発明を前提とする請求項５の発明において、前記支持バー（１０）はコンクリート構築物の支骨となる鉄筋（１９）に取着され、このコンクリート構築物を成形するための型枠（２０）に対しコンクリート埋設物（１）を支持バー（１０）の弾性力により押圧した。請求項７の発明では、コンクリート埋設物（１）の動きをより一層確実に規制してコンクリート埋設物（１）を良好な状態で支持することができる。 In the invention of claim 5 premised on the invention of any one of claims 1 to 4 , the support bar (10) is attached to a reinforcing bar (19) serving as a supporting frame of a concrete structure, The concrete embedding (1) was pressed by the elastic force of the support bar (10) against the formwork (20) for molding this concrete structure. In the invention of claim 7, the movement of the concrete buried object (1) can be more reliably regulated to support the concrete buried object (1) in a good state.

請求項６の発明にかかるコンクリート埋設物（１）は下記のように構成されている。
支持バー（１０）により支持される金属製のコンクリート埋設物（１）であって、壁（２）が切り起こされることにより、この壁（２）に形成した貫通孔（４）に面して壁（２）から突出する膨出部（５）を有する挿通部（３）を設け、この挿通部（３）の膨出部（５）の内側に形成した支持孔（６）には、この挿通部（３）に挿通された支持バー（１０）の両端部（１１，１２）間に設けた係合部（１６）を有する係合突部（１５）の全部または一部が挿入されてその係合突部（１５）が当接し得る被係合部（９）を設け、前記挿通部（３）において膨出部（５）内の支持孔（６）は支持バー（１０）が挿通し得る両側の開口（７，８）を有し、前記支持孔（６）内の被係合部（９）は、この両開口（７，８）間に形成されるとともに、両開口（７，８）のうち一方の開口（７）側から他方の開口（８）側に至るほど、両開口（７，８）を結ぶ中心線（６ａ）に対し接近するように傾斜して形成されており、この支持バー（１０）の係合突部（１５）に対するこの挿通部（３）の被係合部（９）の係合により、この挿通部（３）がこの支持バー（１０）に対し支持バー（３）の軸線（１０ａ）回りで回動するのを規制するとともに、前記係合突部（１５）の係合部（１６）が前記他方の開口（８）側の被係合部（９）に係合することにより、挿通向きへ移動するのを規制する。請求項６の発明では、請求項１の発明と同様な効果を奏し得るコンクリート埋設物（１）を提供することができる。 The concrete embedded object (1) concerning the invention of Claim 6 is comprised as follows.
A metal concrete embedment (1) supported by a support bar (10), which faces a through hole (4) formed in the wall (2) when the wall (2) is cut and raised. An insertion portion (3) having a bulging portion (5) protruding from the wall (2) is provided, and the support hole (6) formed inside the bulging portion (5) of the insertion portion (3) All or part of the engaging protrusion (15) having the engaging portion (16) provided between the both end portions (11, 12) of the support bar (10) inserted through the insertion portion (3) is inserted. An engaged portion (9) with which the engaging protrusion (15) can abut is provided, and the support bar (10) is inserted into the support hole (6) in the bulging portion (5) in the insertion portion (3). And the engaged portion (9) in the support hole (6) is formed between the openings (7, 8). The mouth (7, 8) is inclined so as to approach the center line (6a) connecting the two openings (7, 8) from the one opening (7) side to the other opening (8) side. The insertion portion (3) is formed into the support bar (9) by the engagement of the engaged portion (9) of the insertion portion (3) with the engagement protrusion (15) of the support bar (10). 10) is restricted from rotating around the axis (10a) of the support bar (3), and the engaging portion (16) of the engaging protrusion (15) is located on the other opening (8) side. By engaging with the engaged portion (9), movement in the insertion direction is restricted. In invention of Claim 6, the concrete embedment (1) which can have the same effect as invention of Claim 1 can be provided.

本発明は、簡単な作業により金属製コンクリート埋設物（１）を良好な状態で支持することができるコンクリート埋設物支持構造、並びに、簡単な作業により良好な状態で支持することができる金属製コンクリート埋設物（１）を提供することができる。 INDUSTRIAL APPLICABILITY The present invention is a concrete embedded support structure that can support a metal concrete embedded object (1) in a good state by a simple operation, and a metal concrete that can be supported in a good condition by a simple operation. An embedded object (1) can be provided.

以下、本発明の一実施形態にかかるコンクリート埋設物及びその支持構造について図１〜５を参照して説明する。
図１で概略的に示すように、コンクリート埋設物としての配線ボックス１は金属からなり、その裏壁２で四隅部にはそれぞれ挿通部３が設けられている。図３に示すように、この各挿通部３は、この裏壁２を切り起こすことにより、裏壁２に形成された貫通孔４と、この貫通孔４に面して裏壁２から外側へ突出する膨出部５とを有している。この膨出部５は略半円筒状をなし、この膨出部５内には支持孔６が貫通孔４と連通するように形成されている。この支持孔６の両側は略半円状の開口７，８で横向きに開放され、この両開口７，８のうち一方の開口７の直径が他方の開口８の直径よりも大きくなっている。この両開口７，８間で膨出部５の内面には被係合面９（被係合部）が形成されている。この被係合面９は、両開口７，８のうち一方の開口７（大径開口）から他方の開口８（小径開口）に至るほど、両開口７，８を結ぶ中心線６ａに対し接近するようにテーパ状に傾斜している。各挿通部３のうち、上側の両挿通部３と下側の両挿通部３とにおいては、それぞれ、支持孔６の中心線６ａが互いに一致して横方向へ延び、直径の小さい小径開口８がこの中心線６ａの方向で相対向している。なお、図示しないが、上側の両挿通部３と下側の両挿通
部３とにおいては、それぞれ、両挿通部３を互いに分離することなくそれらの小径開口８を互いにつなぐように一連に形成してもよい。 Hereinafter, a concrete buried object and a support structure thereof according to an embodiment of the present invention will be described with reference to FIGS.
As schematically shown in FIG. 1, a wiring box 1 as a concrete buried object is made of metal, and an insertion portion 3 is provided at each of four corners of the back wall 2. As shown in FIG. 3, each of the insertion portions 3 cuts and raises the back wall 2, so that the through-hole 4 formed in the back wall 2 faces the through-hole 4 to the outside from the back wall 2. And a protruding bulging portion 5. The bulging portion 5 has a substantially semi-cylindrical shape, and a support hole 6 is formed in the bulging portion 5 so as to communicate with the through hole 4. Both sides of the support hole 6 are opened laterally by substantially semicircular openings 7, 8, and the diameter of one of the openings 7, 8 is larger than the diameter of the other opening 8. An engaged surface 9 (engaged portion) is formed on the inner surface of the bulging portion 5 between the openings 7 and 8. The engaged surface 9 becomes closer to the center line 6a connecting the openings 7 and 8 as the distance from one opening 7 (large diameter opening) to the other opening 8 (small diameter opening) of the openings 7 and 8 is increased. It is inclined like a taper. Among the insertion portions 3, the upper insertion portions 3 and the lower insertion portions 3 are respectively formed such that the center lines 6 a of the support holes 6 coincide with each other and extend in the lateral direction, and have a small diameter opening 8 with a small diameter. Are opposed to each other in the direction of the center line 6a. Although not shown, the upper insertion portions 3 and the lower insertion portions 3 are formed in series so as to connect the small diameter openings 8 to each other without separating the insertion portions 3 from each other. May be.

また、図１に示すように、両端部１１，１２を有する支持バー１０は図２，３に示すように前記膨出部５で支持孔６の両開口７，８に対し共に挿通し得る棒状部１３（円形断面の丸棒）を主体とし、この棒状部１３の直径が前記小径開口８の直径よりも小さくなっている。この棒状部１３には支持バー１０の両端部１１，１２間で一つの圧潰部１４が押し潰されて板状に成形されている。この圧潰部１４において、厚さは棒状部１３の直径よりも小さくなっているが、逆に幅は棒状部１３の直径よりも大きくなっている。そのため、この圧潰部１４で幅方向の両側には係合突起１５（係合突部）が棒状部１３から突出するように形成されている。この両係合突起１５において棒状部１３の長手方向の両側で係合面１６（係合部）が形成されている。ちなみに、この圧潰部１４から支持バー１０の一端部１１までの距離は、この圧潰部１４から支持バー１０の他端部１２までの距離よりも、前記両挿通部３間の間隔だけ大きくなっている。 Further, as shown in FIG. 1, the support bar 10 having both end portions 11 and 12 is a rod-like shape that can be inserted into both the openings 7 and 8 of the support hole 6 at the bulging portion 5 as shown in FIGS. The portion 13 (round bar having a circular cross section) is mainly used, and the diameter of the rod-like portion 13 is smaller than the diameter of the small-diameter opening 8. A single crushing portion 14 is crushed between the both end portions 11 and 12 of the support bar 10 and formed into a plate shape on the rod-like portion 13. In this crushing portion 14, the thickness is smaller than the diameter of the rod-shaped portion 13, but the width is conversely larger than the diameter of the rod-shaped portion 13. Therefore, an engagement protrusion 15 (engagement protrusion) is formed on both sides of the crushing portion 14 in the width direction so as to protrude from the rod-shaped portion 13. Engagement surfaces 16 (engagement portions) are formed on both sides of the rod-shaped portion 13 in the longitudinal direction of the engagement protrusions 15. Incidentally, the distance from the crushing portion 14 to the one end portion 11 of the support bar 10 is larger than the distance from the crushing portion 14 to the other end portion 12 of the support bar 10 by the interval between the two insertion portions 3. Yes.

前記配線ボックス１の各挿通部３のうち、上側の両挿通部３と下側の両挿通部３とにおいて、それぞれ、図１に示すように前記支持バー１０を用意し、図２に示すようにこの支持バー１０の一端部１１側を一方の挿通部３で支持孔６に大径開口７から挿入する。なお、各支持バー１０は各挿通部３のうち任意の挿通部３の大径開口７から挿入してもよい。その支持バー１０の一端部１１側は、図３に示すように、一方の挿通部３で支持孔６の小径開口８から引き出され、他方の挿通部３で支持孔６に小径開口８から挿入されるとともに支持孔６の大径開口７から引き出される。この支持バー１０の圧潰部１４は一方の挿通部３で支持孔６に大径開口７から挿入される。この圧潰部１４で両係合突起１５の係合面１６は一方の挿通部３で膨出部５内の被係合面９に引掛けられて当接する。この係合面１６及び被係合面９（移動規制手段Ｍ及び回動規制手段Ｒ）が互いに当接する正位置では、支持バー１０の一端部１１側が挿通部３から横方向へ突出する寸法Ｌ１１と、支持バー１０の他端部１２側が挿通部３から横方向へ突出する寸法Ｌ１２とが互いに略等しくなる。 Among the insertion portions 3 of the wiring box 1, the upper insertion portions 3 and the lower insertion portions 3 are provided with the support bars 10 as shown in FIG. 1, respectively, as shown in FIG. The one end 11 side of the support bar 10 is inserted into the support hole 6 from the large-diameter opening 7 through one insertion portion 3. Each support bar 10 may be inserted from the large-diameter opening 7 of any insertion portion 3 among the insertion portions 3. As shown in FIG. 3, the one end 11 side of the support bar 10 is pulled out from the small-diameter opening 8 of the support hole 6 by one insertion portion 3 and inserted into the support hole 6 from the small-diameter opening 8 by the other insertion portion 3. And pulled out from the large-diameter opening 7 of the support hole 6. The crushing portion 14 of the support bar 10 is inserted into the support hole 6 from the large-diameter opening 7 at one insertion portion 3. In this crushing portion 14, the engaging surfaces 16 of both engaging protrusions 15 are hooked and brought into contact with the engaged surface 9 in the bulging portion 5 at one insertion portion 3. In the normal position where the engaging surface 16 and the engaged surface 9 (the movement restricting means M and the rotation restricting means R) are in contact with each other, the dimension L11 at which the one end 11 side of the support bar 10 projects laterally from the insertion portion 3. And the dimension L12 which the other end part 12 side of the support bar 10 protrudes from the insertion part 3 to a horizontal direction mutually becomes substantially equal.

このようにして支持バー１０に対する配線ボックス１の位置を設定した後に、その設定位置を維持したまま、図４に示すように、支持バー１０の一端部１１側と他端部１２側とをそれぞれ折り曲げて折曲部１７，１８を形成し、支持バー１０に対し配線ボックス１を位置決めする。次に、この支持バー１０の一端部１１側と他端部１２側とをそれぞれ、コンクリート構築物の支骨となる鉄筋１９に対し締結索や溶接等により取着する。 After the position of the wiring box 1 with respect to the support bar 10 is set in this manner, the one end 11 side and the other end 12 side of the support bar 10 are respectively connected to the support bar 10 as shown in FIG. 4 while maintaining the set position. The bent portions 17 and 18 are formed by bending, and the wiring box 1 is positioned with respect to the support bar 10. Next, the one end portion 11 side and the other end portion 12 side of the support bar 10 are respectively attached to the reinforcing bars 19 serving as the supporting frames of the concrete structure by fastening ropes, welding or the like.

このようにして配線ボックス１を支持バー１０により鉄筋１９に支持した支持状態では、前記挿通部３の被係合面９と前記支持バー１０の係合面１６との当接により、配線ボックス１が支持バー１０に対し支持バー１０の軸線１０ａの方向Ｘで挿通向きＸａまたはＸｂへ移動するのを規制するとともに支持バー１０の軸線１０ａ回りで回動するのを規制する。さらに、図５に示すように、コンクリート構築物を成形するための型枠２０に対し配線ボックス１を支持バー１０の弾性力により押圧する。その場合、型枠２０に接触する配線ボックス１の前面は、コンクリート打設後にコンクリート構築物から露出する。 In the support state in which the wiring box 1 is supported on the reinforcing bar 19 by the support bar 10 in this manner, the wiring box 1 is brought into contact with the engaged surface 9 of the insertion portion 3 and the engaging surface 16 of the support bar 10. Restricts the support bar 10 from moving in the insertion direction Xa or Xb in the direction X of the axis 10a of the support bar 10 and rotating around the axis 10a of the support bar 10. Further, as shown in FIG. 5, the wiring box 1 is pressed by the elastic force of the support bar 10 against the mold 20 for molding the concrete structure. In that case, the front surface of the wiring box 1 in contact with the mold 20 is exposed from the concrete structure after the concrete is placed.

図示しないが、前記各挿通部３の被係合面９の形態については、その被係合面９を膨出部５の内面で傾斜状に形成する以外に、支持バー１０の圧潰部１４の両係合突起１５が支持バー１０の軸線１０ａの方向へ相対移動するのを規制するとともに支持バー１０の軸線１０ａ回りで相対回動するのを規制するように段差状に形成してもよい。また、図示しないが、両支持バー１０の係合面１６の形態については、棒状部１３に圧潰部１４を形成する以外に棒状部１３に折曲部を段差状に形成し、その段差状折曲部に合わせて各挿通部３の膨出部５の内面も段差状に形成してもよい。さらに、図示しないが、支持バー１０の一端部１１側及び他端部１２側が挿通部３から縦方向へ突出するように、各挿通部３の開口７，８の向きを縦向きに変更してもよい。 Although not shown in the drawings, the shape of the engaged surface 9 of each of the insertion portions 3 is not limited to that the engaged surface 9 is inclined on the inner surface of the bulging portion 5, and the crushing portion 14 of the support bar 10 is formed. The engaging protrusions 15 may be formed in a stepped shape so as to restrict relative movement of the supporting protrusions 10 in the direction of the axis 10 a of the support bar 10 and to restrict relative rotation about the axis 10 a of the support bar 10. Although not shown in the drawings, the engaging surfaces 16 of the two support bars 10 are formed in a stepped shape on the rod-shaped portion 13 in addition to forming the crushing portion 14 on the rod-shaped portion 13, and the step-shaped folding. The inner surface of the bulging portion 5 of each insertion portion 3 may be formed in a stepped shape in accordance with the curved portion. Further, although not shown, the direction of the openings 7 and 8 of each insertion portion 3 is changed to the vertical direction so that the one end 11 side and the other end 12 side of the support bar 10 protrude from the insertion portion 3 in the vertical direction. Also good.

（ａ）は本実施形態にかかるコンクリート埋設物支持構造において一つの配線ボックス及び二本の支持バーを互いに分解して示す斜視図であり、（ｂ）はこの配線ボックスの各挿通部のうち一つの挿通部を示す（ａ）の部分拡大斜視図であり、（ｃ）はこの両支持バーの圧潰部を示す（ａ）の部分拡大斜視図である。(A) is the perspective view which disassembles and shows one wiring box and two support bars mutually in the concrete buried thing support structure concerning this embodiment, (b) is one of each insertion part of this wiring box. It is a partial expansion perspective view of (a) which shows one penetration part, (c) is a partial expansion perspective view of (a) which shows the crushing part of both these support bars. （ａ）は図１（ａ）に示す配線ボックスと両支持バーとを互いに組み付けて示す斜視図であり、（ｂ）はこの配線ボックスの挿通部に対する支持バーの挿通状態を示す（ａ）の部分拡大斜視図である。(A) is a perspective view showing the wiring box and both support bars shown in FIG. 1 (a) assembled together, and (b) shows the insertion state of the support bar with respect to the insertion portion of this wiring box. It is a partial expansion perspective view. （ａ）は図２（ａ）を背面側から見た部分断面図であり、（ｂ）は（ａ）のＡ−Ａ線部分断面図であり、（ｃ）は（ａ）のＢ−Ｂ線部分断面図である。(A) is the fragmentary sectional view which looked at Fig.2 (a) from the back side, (b) is the AA partial fragmentary sectional view of (a), (c) is BB of (a). FIG. 本実施形態において配線ボックスを両支持バーにより鉄筋に支持した状態を示す部分斜視図である。It is a fragmentary perspective view which shows the state which supported the wiring box in the reinforcing bar with both the support bars in this embodiment. 本実施形態において両支持バーにより鉄筋に支持した配線ボックスをコンクリート構築物内に埋設した状態を示す部分断面図である。In this embodiment, it is a fragmentary sectional view which shows the state which embed | buried in the concrete structure the wiring box supported by the reinforcing bar with both the support bars.

Explanation of symbols

１…配線ボックス（コンクリート埋設物）、２…配線ボックスの裏壁、３…挿通部、４…貫通孔、５…膨出部、６…支持孔、６ａ…支持孔の中心線、７…開口、８…開口、９…挿通部の被係合面（移動規制手段及び回動規制手段の被係合部）、１０…支持バー、１０ａ…軸線、１１…支持バーの一端部、１２…支持バーの他端部、１３…棒状部、１４…圧潰部、１５…支持バーの係合突起（移動規制手段及び回動規制手段の係止部）、１９…鉄筋、２０…型枠、Ｍ…移動規制手段、Ｒ…回動規制手段、Ｘａ，Ｘｂ…挿通向き、Ｌ１１，Ｌ１２…寸法。
DESCRIPTION OF SYMBOLS 1 ... Wiring box (concrete buried object), 2 ... Back wall of wiring box, 3 ... Insertion part, 4 ... Through hole, 5 ... Swelling part, 6 ... Support hole, 6a ... Center line of support hole, 7 ... Opening , 8... Opening, 9... Engaged surface of insertion part (engaged part of movement restricting means and rotation restricting means), 10... Support bar, 10 a. The other end of the bar, 13 ... the rod-like part, 14 ... the crushing part, 15 ... the engagement protrusion of the support bar (the locking part of the movement restricting means and the rotation restricting means), 19 ... the reinforcing bar, 20 ... the mold, M ... Movement restricting means, R ... rotation restricting means, Xa, Xb ... insertion direction, L11, L12 ... dimensions.

Claims

A concrete buried support structure for supporting a concrete buried object made of metal with a support bar,
An engaging protrusion having an engaging portion is provided between one end and the other end of the support bar, and the concrete buried is formed on the wall by cutting and raising the wall of the concrete buried. An insertion portion having a bulging portion that protrudes from the wall facing the through hole is provided, and a support hole formed inside the bulging portion of the insertion portion of the concrete buried object is supported by the insertion portion. Provided with an engaged portion in which all or a part of the engaging protrusion of the bar is inserted and the engaging protrusion can contact,
The support hole in the bulging part in the insertion part of the concrete buried object has openings on both sides through which the support bar can be inserted, and the engaged part in the support hole is formed between the two openings. From the opening side of one of the openings to the other opening side, it is formed to be inclined so as to approach the center line connecting both openings,
By engaging the engaged portion of the concrete buried object with the engagement protrusion of the support bar, the concrete buried object is prevented from rotating around the axis of the support bar , and the engagement protrusion The concrete embedding is characterized in that the engaging portion is engaged with the engaged portion on the other opening side, thereby restricting the concrete embedded object from moving in the insertion direction of the support bar. Object support structure.

2. The concrete buried according to claim 1, wherein a dimension in which one end of the support bar protrudes from the concrete buried and a dimension in which the other end of the support bar projects from the concrete buried are equal to each other. Support structure.

The support bar is mainly composed of a rod-shaped portion that can be inserted into both the openings of the bulging portion, and the engaging protrusion of the support bar is formed so as to protrude from the rod-shaped portion, and one of the two openings is opened. The concrete embedded object support structure according to claim 1 , wherein the concrete embedded object support structure can be brought into contact with an engaged portion in the support hole .

4. The concrete buried support structure according to claim 3 , wherein the engagement protrusion of the support bar is formed as a crushing portion formed by crushing the rod-shaped portion . 5.

The support bar is attached to a reinforcing bar as a supporting frame of a concrete structure, and the concrete embedded object is pressed against the formwork for forming the concrete structure by the elastic force of the support bar. The concrete embedded support structure according to claim 4 .

A metal concrete buried object supported by a support bar,
When the wall is cut and raised, an insertion part having a bulging part protruding from the wall facing the through hole formed in the wall is provided, and the support hole formed inside the bulging part of the insertion part has a An engaged portion is provided in which all or a part of the engaging protrusion having an engaging portion provided between both ends of the support bar inserted into the insertion portion can be inserted and the engaging protrusion can abut, In the insertion portion, the support hole in the bulging portion has openings on both sides through which the support bar can be inserted, and the engaged portion in the support hole is formed between the openings, and one of the openings Is formed so as to be closer to the center line connecting the two openings from the opening side to the other opening side, and the engagement portion of the insertion portion with respect to the engagement protrusion of the support bar is formed . Engagement restricts the insertion portion from rotating about the axis of the support bar with respect to the support bar. Together, by engaging portions of the engagement projection is engaged with the engagement portion of the other opening side, and characterized in that the insertion portion is restricted from moving to the insertion direction of the support bar Concrete buried.