JPH06212790A - Supporting member for embedded box - Google Patents

Abstract

PURPOSE:To ensure efficient transport and storage by providing the vicinity of the lengthwise intermediate section of the first supporting member made of a pair of rod materials with the second supporting member having a fixing section for fastening the rod materials and a supporting section for bearing an embedded box. CONSTITUTION:The plate type pieces 4 of the second supporting member 2 are inserted in the mounting holes 11 of an embedded box 10 until the stepped sections of the pieces 4 come to be placed on the periphery of the holes 11. Then, the pieces 4 are bent so as to come in contact with the rear side of the back of the box 10, thereby supporting the box 10. Thereafter, the rod materials 1a of the first supporting member 1 are expanded in four directions and fastened to a steel reinforcement via a binder. Furthermore, a form is kept in contact with the opening of the box 10, and concrete is placed therein.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embedding box support for preliminarily fixing an embedding box at a required position in a concrete placing space.

[0002]

2. Description of the Related Art A conventional embedding box support (hereinafter referred to as a support) is disclosed in Japanese Patent Publication No. 3-58023. This is, as shown in FIG. 7, a linear support rod A fixed to a reinforcing bar, and a plate-like mounting body B which holds the support rod A and is attached to the embedding box 10.
Consists of. The support rod A is bendable and has a tensile strength capable of pressing the embedding box 10 against the mold in a bent state.

The mounting body B has a rectangular shape that abuts on the back surface of the embedding box 10, and has a projecting piece C fitted into a mounting hole 11 provided at a predetermined position on the back surface of the embedding box 10. . The mounting body B is mounted to the embedding box 10 by inserting the projecting piece C into the mounting hole 11 and bending it. Further, the mounting body B is a through hole 13 provided at the center of the back surface of the embedding box 10 in a state where it is attached to the embedding box 10.
It has a screw hole D that matches a. A female screw is engraved in the screw hole D, and a pulling member, for example, a stud bolt, that pulls the embedding box 10 to the mold to firmly bring it into close contact is screwed. Further, the mounting body B has fixed portions E for holding the supporting rod A at both ends thereof, and the supporting rod A is held along both ends of the mounting body B and protrudes outward in the left and right directions. ing.

The embedding of the embedding box 10 using this will be described. First, the mounting body B is attached to the embedding box 10. Next, the supporting rod A is bent and fixed to the reinforcing bar using a wire or the like. At that time, the embedding box 10 can be set at a desired position by adjusting the bending condition. Then, the form is brought into contact with the opening of the embedding box 10 and concrete is poured. As described above, in the above-mentioned supporting tool, the embedding box 10 can be arranged at a desired position without waiting for the installation of the mold, and the work can be easily performed.

[0005]

However, the above-mentioned supporting device has a rectangular mounting plate that covers most of the back surface of the embedding box, and a long linear shape that protrudes outward from the left and right from both ends of the mounting plate. Since the support rods of No. 1 and No. 2 are used, the area occupied by the entire support tool becomes very large. Therefore, there are inconveniences such as taking up space during storage and not being easy to transport. Also, when using stud bolts, the screwing with the screw holes of the mounting body is done through the formwork after the formwork is installed, so it cannot be visually inspected, and the extent to which it is screwed is roughly It depends on the standard of. Therefore, there is a possibility that the tip portion of the stud bolt may be excessively screwed and the tip portion of the stud bolt may be excessively projected from the back surface of the box and the mounting body. If concrete is placed in that state, it will be impossible to pull out the stud bolts after the concrete has hardened.
Although it is necessary to pull out the stud bolts after the concrete is poured and before the concrete hardens, it is often dangerous or difficult to enter the site when the concrete is poured. In the worst case, after concrete hardening,
The difficult task of cutting the stud bolts through the narrow opening in the embedding box flush with the wall must be done.

Further, in the above-mentioned one, when the embedding box has a tightening hole in which a female screw is engraved on the back surface, the tightening hole of the embedding box and the screw hole of the mounting body are connected, and the stud bolt is attached. It may not be possible to screw it well.

The present invention has been made in view of the above circumstances, and its object is to enable efficient transportation and storage, and facilitate the work of burying an embedding box using a pulling member. The present invention is to provide an embedded box support.

[0008]

In order to achieve the above object, the embedding box support according to claim 1 is for disposing the embedding box at a required position in the concrete pouring space. , A first support member in which a pair of bar-shaped members that are bendable and have a required length are substantially in contact with each other, and the pair of bar-shaped members is fixed near the middle in the longitudinal direction of the first support member. The second support member has a pair of support portions that support the fixing portion and the embedded box, and is configured to include a second support member.

Further, in the embedding box support according to a second aspect of the present invention, the fixing portion is such that the supporting portion of the second supporting member according to the first aspect is inserted into the mounting hole provided on the back surface of the embedding box. Is a plate-like piece that is continuously provided.

The embedding box support according to a third aspect of the present invention is such that the plate-shaped piece according to the second aspect is provided with a step portion near the base end thereof for mounting the peripheral edge of the mounting hole of the embedding box. I am trying.

According to a fourth aspect of the present invention, there is provided an embedded box support tool, wherein the first support member and / or the first support member located inside the pair of support portions of the second support member according to any one of the first to third aspects. (2) The fixing portion of the support member is curved in a direction away from the embedding box by a predetermined distance.

The embedding box support according to a fifth aspect of the present invention has a size that closes the through hole of the embedding box through which the attracting member having a male screw for attracting the embedding box penetrates, and pulls it toward the center. A screw member in which a female screw that engages with the male screw of the member is engraved is disposed inside the pair of support portions of the second support member.

According to a sixth aspect of the present invention, there is provided an embedded box support device, wherein the threaded member according to the fifth aspect is further provided with a closed portion which covers a plurality of mounting holes from the periphery thereof so as not to overlap the knockout. It is configured to be.

[0014]

According to the first aspect of the present invention, since the pair of rod-shaped members are in a state of substantially abutting each other in the first supporting member, the entire occupying area of the supporting member is much smaller than the conventional one. .

According to the second aspect of the present invention, since the support portion of the second support member is a plate-shaped piece inserted into a mounting hole provided in advance on the back surface of the embedding box, it is inserted and bent. Can only support the embedded box.

According to the third aspect of the invention, since the step portion for mounting the peripheral edge of the mounting hole of the embedding box is provided in the vicinity of the base end of the plate-shaped piece, the degree of insertion of the plate-shaped piece into the mounting hole is constant. Becomes

According to the fourth aspect of the present invention, the fixing portion of the first supporting member and / or the second supporting member is curved in a direction away from the embedding box by a predetermined distance. When using a pulling member that has a male screw for pulling to the formwork, its tightening force can be fully utilized, and the degree of protrusion of the tip part from the back surface of the box can be made constant to prevent excessive protrusion. Can be prevented.

According to a fifth aspect of the present invention, there is provided a screw member having a size for closing the through hole of the embedding box through which the pulling member penetrates, and having a female screw engraved with a male screw of the pulling member. Since the two support members are disposed inside the pair of support portions, the pulling member can be used for the embedding box in which the female screw to be screwed with the pulling member is not engraved.

According to the sixth aspect of the present invention, since the screw member is provided with the closing portion for closing the plurality of mounting holes in a range that does not overlap the knockout from the periphery thereof, the use of the knockout is not hindered. It is possible to prevent the placed concrete from entering the box through the mounting holes.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. This embedded box support tool (hereinafter referred to as a support tool) includes a pair of bendable rod-shaped members 1a, 1a.
And the pair of rod-shaped members 1a, 1 in the vicinity of the middle of the first supporting member 1 in the longitudinal direction.
and a second supporting member 2 having a pair of plate-like pieces 4 which are supporting portions for supporting the embedded box 10 and a fixing portion 3 for fixing a.

The first supporting member 1 has a sufficient length so that it can be fixed to the reinforcing bars 14 arranged vertically and horizontally in the concrete pouring space. For example, the length of rods 1a and 1a is 550m.
m, diameter is about 4 mm. This first support member 1
When used, is deformed so that its ends are separated from each other in a substantially abutted state to form a substantially X shape, and is fixed to the reinforcing bar 14 by a binding tool 15 or the like. At that time, the embedding box 10 can be adjusted so as to obtain a required position by appropriately bending the rod-shaped members 1a, 1a.

Here, a pair of rod-shaped members is a pair of rod-shaped members which are arranged in abutment with each other.
For example, two rod-shaped members that are folded in two may be connected to each other at a fixing portion of a second support member described later so that the tips of the rod-shaped members face in opposite directions, and a pair of rod-shaped members may be substantially used. .

The second support member 2 has the first support member 2 as described above.
A pair of fixing parts (3) for fixing the support member (1) and plate-like pieces (4) for supporting the embedded box (10) are provided. The fixing portion 3 is, for example, a thin iron plate having a thickness of about 1 mm, and a pair of rod-shaped members that are in substantially contact with each other.
It is formed by caulking near the middle of 1a, 1a, and has a substantially cylindrical shape. Further, the plate-shaped pieces 44 are continuously provided from both ends of the fixed portion 3 so that they can be inserted into the mounting holes 11 provided at predetermined positions on the back surface of the embedding box 10. The plate-like piece 4 is provided with a step portion 5 for mounting the peripheral edge of the mounting hole 11 of the embedding box 10 near the base end thereof. The step portion 5 is for stabilizing the mounting condition of the embedding box 10.

The fixed parts may be, for example, a pair of ring-shaped parts which are spaced apart from each other by an appropriate distance. Further, the fixing portion may be fixed by welding, for example. further,
Instead of the plate-shaped piece, the support section may be a projection piece having a male screw, for example, and a nut or the like may be screwed therein.

The support of the embedding box 10 by the plate-like piece 4 will be described. First, the plate-like piece 4 is embedded in the embedding box 10 with its step portion 5.
Insert the peripheral edge of the mounting hole 11 of 10 into the mounting hole 11 until it is placed. Then, when the plate-like piece 4 is bent so as to come into contact with the back side of the back surface of the embedding box 10, the embedding box 10 is engaged and the embedding box 10 is supported.

Further, the fixing portion 3 of the second supporting member 2 is such that when the plate-like piece 4 supports the embedding box 10, the embedding box 10
The first support member 1 is curved along with the vicinity of the middle of the first support member 1 in a direction away from the back surface of the predetermined distance by a predetermined distance. As a result, when a pulling member that pulls the embedding box 10 to the formwork 16 and firmly adheres to it, for example, a stud bolt 17, is used, the tip portion thereof is engraved with a female screw at the center of the back surface of the embedding box 10. Slightly from the tightening hole 12, for example 10.5
It will hit the fixed part 3 in a state of protruding by about mm and will not move any further. Therefore, the stud bolt 17's tightening force is utilized, and the stud bolt is used even after the concrete is hardened.
17 can be pulled out.

As described above, when the fixing portion is a pair of ring-shaped members, only the first supporting member is curved. In addition, as described above, when the first support member is formed by connecting two rod-shaped members that are folded in two and connected by the fixing portion with their tips facing in opposite directions, only the second support member is provided. It will be curved.

The embedding operation of the embedding box 10 using this support tool will be described. First, as described above, the embedding box 10 is supported by the plate-shaped piece 4. Next, the rod-shaped members 1a, 1a of the first support member 1 are spread in all directions and fixed to the reinforcing bar 14 using a binding tool 15 or the like. At this time, the rod-shaped members 1a, 1a are appropriately bent to set the embedding box 10 at a required position. Then, the form 16 is brought into contact with the opening of the embedding box 10, and concrete is poured. At this time, when the stud bolt 17 is used, the mold 16 is brought into contact with the opening of the embedding box 10, the stud bolt 17 is penetrated through the mold 16, and the tightening hole 12 on the back surface of the embedding box 10 is inserted. After screwing into the concrete, concrete is poured. And after hardening concrete, stud bolt
Pull out 17. In this way, the embedding box 10 is embedded at a desired position in the concrete pouring space.

Next, a second embodiment of the present invention will be described with reference to FIGS.
It will be described based on. This support is the first support member 1
And a second support member 2 and a screw member 6. The first support member 1 and the second support member 2 are the same as in the first embodiment. The screw member 6 is formed by engraving a female screw threadedly engaged with the stud bolt 17 in the center, and has a size that closes the through hole 13a of the embedding box 10 through which the stud bolt 17 penetrates. The screw member 6 is disposed inside the pair of plate-shaped pieces 4, 4 of the second support member 2, and is sandwiched between the fixed portion 3 and the back surface of the embedding box 10. In addition, the screw member 6 is provided with a closed portion 7 that continuously closes the plurality of mounting holes 11 from the peripheral edge thereof. This block 7 is an embedded box 10 for connecting a conduit 18.
It is provided so as not to overlap the knockout 13 of the above and prevent its use, and prevents concrete from entering the mounting hole 11 of the embedding box 10 during concrete pouring.

Specifically, on the back surface of the embedding box 10, knockouts are made in the center and in the vicinity of the four corners like the fifth eye of the dice.
13 are provided, and the mounting holes 11 are knocked out at the four corners.
A plurality of them are provided in the vicinity of 13. Since the closing portion 7 is continuously provided to close the mounting holes 11, the closing portion 7 has a substantially cross shape. Also, if you block all the mounting holes 11,
Since the plate-like piece 4 of the second support member 2 cannot be inserted into the mounting hole 11, the insertion hole 8 is provided in a part of the closed portion 7. Further, since the closing portion 7 has the convex portion 9 that closes the other mounting hole 11 and fits into the mounting hole 11, the second supporting member 2
Positioning can be easily performed when sandwiched between the fixed part 3 and the back surface of the embedding box 10.

By the way, the embedding box 10 is a general standard product which is arranged so as to be flush with the wall surface to accommodate an outlet, and has a box body having an opening on one side, and a plurality of boxes are provided on each side. With 13 knockouts. Normally, the stud bolt 17 is penetrated through a through hole 13a formed by punching out the knockout 13 at the center of the rear surface. In addition, a plurality of mounting holes 11 are provided in advance at predetermined positions on the back surface. further,
There is also one in which a tightening hole 12 in which a female screw for penetrating the stud bolt 17 is engraved is provided in the center of the back surface. First
The support of the embodiment is not particularly problematic when the embedding box 10 has the tightening hole 12, but otherwise, the stud bolt 17 cannot be used. The support of the present embodiment enables the stud bolt 17 to be used when the embedding box 10 does not have the tightening hole 12.

The operation of embedding the embedding box 10 by the support of this embodiment will be described. First, the screw member 6 is fitted into the mounting hole 11 of the embedding box 10. Next, the embedding box 10 is supported by the support tool so that the screw member 6 is clamped. Next, the rod-shaped members 1a, 1a of the first support member 1 are spread in all directions and fixed to the reinforcing bar 14 using a binding tool 15 or the like. At this time,
The rod-shaped members 1a, 1a are appropriately bent, and the embedding box 10 is set at a required position. Next, in the opening of the embedded box 10
16 are brought into contact with each other, and the stud bolt 17 is passed through the form 16.
Then, the stud bolt 17 is screwed into the screw member 6 through the through hole 13a on the back surface of the embedding box 10, and then concrete is poured. The stud bolt 17 may be pulled out after hardening the concrete.

The insertion hole of the closed portion of the screw member may be formed by cutting out or may be formed by cutting out. Further, the screw member may have a convex portion that fits into the through hole. In addition, the screw member may be, for example, a generally T-shaped shape, or a substantially circular shape without a closing portion,
It should have a size that at least closes the through hole of the embedding box. Further, the screw member may be fixed to the support by welding or the like.

[0034]

The embedded box support according to claim 1 is
Since the first support member is a pair of rod-shaped members that are in a state of substantially abutting each other, the area occupied by the entire support is much smaller than in the conventional case, and therefore transportation and storage can be performed efficiently.

In the embedding box support according to the second aspect, in addition to the effect according to the first aspect, the support portion of the second supporting member is inserted into a mounting hole provided in advance on the back surface of the embedding box. Since it is a plate-like piece, the embedding box can be supported simply by inserting and bending it.

In addition to the effect of claim 2, the embedding box support according to claim 3 is provided with a step portion for mounting the peripheral edge of the mounting hole of the embedding box in the vicinity of the base end of the plate-shaped piece. , The degree of insertion of the plate-like piece into the mounting hole becomes constant, and the stability of the mounting condition of the embedding box is improved.

In addition to the effect of any one of the first to third aspects, the embedded box support according to the fourth aspect can make full use of the tightening force of the pulling member, and from the back surface of the box at the tip portion thereof. The degree of protrusion of can be made constant to prevent excessive protrusion. Therefore, the pulling member can be easily pulled out even after the concrete is hardened.

In addition to the effect of the fourth aspect, the embedding box support according to the fifth aspect has a size that closes the through hole of the embedding box through which the pulling member penetrates, and is screwed with the male screw of the pulling member. Since the screw member having the female screw engraved therein is disposed inside the pair of support portions of the second support member, the embedded box in which the female screw screwed with the attracting member is not engraved, A pulling member can be used.

In addition to the effect according to the fifth aspect, the embedded box support according to the sixth aspect further includes, on the threaded member, a closed portion that covers a plurality of mounting holes from the periphery thereof so as not to overlap with the knockout. Therefore, it is possible to prevent the placed concrete from entering the box through the mounting hole without hindering the use of the knockout.

[Brief description of drawings]

FIG. 1 is a perspective view of a support and an embedding box showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which the embedded box is supported.

FIG. 3 is a partially cutaway sectional view showing a state in which the stud bolt is screwed.

FIG. 4 is an exploded perspective view of a support and an embedding box according to a second embodiment of the present invention.

FIG. 5 is a perspective view showing a state in which the screw member is arranged inside the plate-shaped piece of the second support member.

FIG. 6 is a perspective view showing a state in which the embedded box is supported.

FIG. 7 is a perspective view of a support tool and an embedding box showing a conventional example.

[Explanation of symbols]

 1 1st support member 1a Rod-shaped material 2 2nd support member 3 Fixed part 4 Plate-shaped piece (support part) 5 Step part 6 Screw member 7 Closure part 10 Embedded box 11 Mounting hole 13a Through hole 17 Pulling member (stud bolt)

Claims (6)

[Claims] 1. An embedding box is provided at a required position in a concrete pouring space, and a pair of bar-shaped members that are bendable and have a required length are substantially in contact with each other. And a second support member having a pair of support portions for fixing the pair of rod-shaped members and a support portion for supporting the embedding box in the vicinity of the middle in the longitudinal direction of the first support member. Included box support. 2. The embedded member according to claim 1, wherein the support portion of the second support member is a plate-like piece that is continuously provided from the fixing portion so as to be inserted into a mounting hole provided on the back surface of the embedding box. Included box support. 3. The embedding box support according to claim 2, wherein the plate-shaped piece is provided with a step portion for mounting the peripheral edge of the mounting hole of the embedding box near the base end thereof. 4. The fixing portion of the first supporting member and / or the second supporting member located inside the pair of supporting portions of the second supporting member is curved in a direction away from the embedding box by a predetermined distance. The embedded box support according to any one of claims 1 to 3, 5. A pulling member having a male screw for pulling the embedding box has a size to close a through hole of the embedding box through which the pulling member penetrates, and a female screw to be screwed with the male screw of the pulling member is engraved in the center. The embedded box support according to claim 4, wherein the screw member is provided inside the pair of support portions of the second support member. 6. The embedding box support according to claim 5, wherein the screw member is provided with a series of closing portions that close a plurality of mounting holes in a range that does not overlap the knockout from the periphery of the screw member.