JP2003032838A - Apparatus for embedding material in concrete, wiring box and bar member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for embedding material in concrete, a wiring box and a bar member in order to mount a bar member to a material to be embedded to concrete under the condition that rotation of bar member and removal of the same member from the material embedded in concrete are prevented, and to realize easier mounting work of the bar member. SOLUTION: The apparatus 10 for embedding material to concrete is composed of a pair of bar members 11 and a wiring box 13 provided with a bar member mounting area 12 to respectively mount the bar members 11. The bar member 11 is provided with a U-shape bending area 11a. The bar member mounting area 12 allows insertion of the bending area 11a, and is provided with an inserting groove 19a to which a fixed projected part is formed for engagement with the bending area 11a. When the bending area 11a is inserted to the inserting groove 19a, each bar member 11 can be mounted to the wiring box 13 under the condition that rotation of bar member in the circumferential direction, and removal of the same bar member from the bar member mounting area 12 can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete formed for embedding a wiring box in a concrete wall while the wiring box is supported and fixed to a reinforcing bar forming a skeleton of a concrete wall in a building. The present invention relates to an embedded device, a wiring box, and a bar material.

[0002]

2. Description of the Related Art Conventionally, in order to attach a wiring device such as an outlet to a concrete wall surface in a building, a concrete buried object device is buried in the concrete wall. This concrete buried object device is a wiring box formed as a concrete buried object having a square box shape with an opening at the front, and a metal rod for supporting the wiring box on a reinforcing bar forming a skeleton of a concrete wall. It is composed of a bar material.

The bar material has a circular cross section, can be flexibly deformed in a three-dimensional direction by hand, and has a required tensile strength. Then, after the bar material is attached to the wiring box, both end sides of the bar material are bent to the reinforcing bar side and fixed to the reinforcing bar so that the wiring box can be supported at a desired position with respect to the reinforcing bar. it can.

Further, when the formwork for forming the concrete wall is erected so as to be pressed against the opening side end face of the wiring box when the wiring box is supported on the reinforcing bars, the wiring box is formed due to the tensile strength of the bar material. Pressed against the mold surface. Therefore, the end surface on the opening side of the wiring box is in close contact with the mold surface, so that concrete can be prevented from entering the inside from the opening of the wiring box at the time of placing concrete between the molds. Further, the wiring box is supported by the reinforcing bar by the bar member, so that when the concrete is poured, inclination and displacement due to the placing pressure of the concrete can be prevented.

The bar member is attached to the wiring box so that the wiring member does not rotate in the circumferential direction and does not easily come off in order to prevent the inclination and the positional displacement due to the placing pressure by closely contacting the wiring box with the mold. ing. Various methods have been proposed for attaching the bar member to the wiring box as described above. The first method is to attach a mounting body formed by welding or caulking and fixing the central portions of a pair of bar members to a plate member that is separate from the wiring box, and screw it to the back surface of the bottom wall of the wiring box. It is fixed by tightening. The second method is
A bar member is inserted between a pair of projecting pieces formed by cutting and raising a peripheral wall of a wiring box, and the projecting pieces are caulked to fix the bar member to the wiring box. The third method is
A bar member is fitted in a recess formed in the side wall of the wiring box, and the fixing screw is screwed and fixed to the side wall so that the bar member is sandwiched between the head of the fixing screw and the side wall.

[0006]

However, the above first to
In any of the third methods, a plurality of work steps are required to attach the bar member to the wiring box while preventing the bar member from rotating in the circumferential direction and preventing the bar member from being removed from the wiring box. And Moreover, the working process includes complicated processes such as welding, caulking or screw tightening. As a result, there is a problem that it is very troublesome to attach the bar material to each of a large number of wiring boxes at the construction site.

The present invention has been made by paying attention to the problems existing in the prior art. The purpose is to make it possible to attach the bar material to the concrete embedding in a state that prevents the bar material from rotating in the circumferential direction and withdrawing from the concrete embedding, and to perform the attachment work easily. It is to provide a concrete buried object device, a wiring box, and a bar material capable of being manufactured.

[0008]

In order to solve the above-mentioned problems, the invention according to claim 1 is a bar member which can be manually bent in three-dimensional directions, and a bar member mounting member to which the bar member can be mounted. A bar, which is made of a concrete buried object, is attached to the bar member mounting portion, and both end sides of the bar member projecting from the concrete buried object are fixed to reinforcing bars forming a skeleton of the concrete structure. The concrete embedding device configured to press the concrete embedding to a formwork erected for forming a concrete structure by the tensile strength of the bar material, while supporting the concrete embedding in the bar. The bar member is provided with a bent portion formed by bending the bar member in a concavo-convex shape along the axial direction, and the bar member mounting portion is an insertion portion into which the bent portion is inserted. The bar member is attached to the bar member mounting portion by inserting the bent portion into the insertion portion, and the bar portion is prevented from rotating in the circumferential direction by the bent portion inserted into the insertion portion. A gist of the present invention is that a removal preventing means for preventing a bent portion from being removed from the insertion portion is formed between the material and the concrete buried object.

According to a second aspect of the present invention, in the concrete embedding apparatus according to the first aspect, the bar member is prevented from rotating in the circumferential direction by the contact between the outer surface of the bent portion and the inner surface of the insertion portion. The outline is that it was formed.

According to a third aspect of the present invention, in the concrete buried object device according to the first or second aspect, the pull-out preventing means is formed by an engagement relationship formed between the insertion portion and the bent portion. The main point is that

According to a fourth aspect of the present invention, in the concrete embedding apparatus according to the third aspect, the pull-out preventing means is formed by engaging the bent portion and a protrusion formed in the insertion portion. That is the summary.

According to a fifth aspect of the present invention, in the concrete embedding apparatus according to any one of the first to fourth aspects, the concrete embedding has a bottomed polygonal box shape having an opening, A wiring box formed so that a wiring device can be attached to the wiring box, the insertion portion is provided in an adjacent corner portion of the wiring box, and a bending portion of one bar member is inserted into the adjacent insertion portion. 2 bends on bar material
The gist is that it was formed in the place.

According to a sixth aspect of the present invention, in the concrete buried object device according to the fifth aspect, the insertion portion is provided on the bottom wall side of the wiring box. The invention according to claim 7 is the concrete buried object apparatus according to any one of claims 1 to 6, wherein the bar member is bent in a U-shape along the axial direction of the bar member and bent. The main point is that a part is formed.

According to an eighth aspect of the present invention, in the concrete buried object apparatus according to any one of the first to seventh aspects, when the bar material is attached to the bar material mounting portion, the concrete material is buried. The gist is that the position of the bent portion in the length direction of the bar member is set so that the protruding lengths of both ends of the bar member protruding from the object are substantially the same.

According to a ninth aspect of the present invention, in the concrete embedding apparatus according to any one of the first to eighth aspects, both end sides of the bar material are 45 degrees with respect to a central portion of the bar material. The gist is that it is formed by bending the tip side from the bent portion to achieve the above.

According to a tenth aspect of the present invention, there is provided a bar member attaching portion for attaching a bar member which can be bent in three dimensions by hand, and both end sides of the bar member attached to the bar member attaching portion are attached. A wiring box that is supported by the reinforcing bars that form the backbone of the concrete structure and is pressed against the formwork that is erected for forming the concrete structure by the tensile strength of the bar material. And a bar portion formed by bending the bar material in an uneven shape along the axial direction to be inserted, and the bar portion is inserted into the insertion portion to attach the bar material to the bar material mounting portion. And a removal preventing means for preventing the rotation of the bar material in the circumferential direction by inserting the bent portion into the insertion portion and for preventing the bending portion from being removed from the insertion portion with the bar material. Be prepared The gist.

According to an eleventh aspect of the present invention, both ends projecting from the concrete embedding in a state where it is formed so as to be bendable in a three-dimensional direction by hand and attached to a bar material attaching portion formed on the concrete embedding. The concrete side is supported by the rebar that is fixed to the rebar forming the backbone of the concrete structure and the concrete strength is pressed against the formwork erected for forming the concrete structure by the tensile strength. It is a bar material to be made, and the gist is that it is provided with a bent portion which is bent along the axial direction into an uneven shape and can be inserted into an insertion portion formed in the bar material mounting portion.

A twelfth aspect of the present invention is characterized in that, in the bar material according to the eleventh aspect, the tip end side is bent from the bent portion so that both end sides form 45 degrees with respect to the central portion.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a concrete buried object device, a wiring box and a bar material embodying the present invention will be described below with reference to FIGS.

As shown in FIG. 1, a concrete buried object device 10 has a pair of bar members 11 that can be manually bent in three-dimensional directions and a bar member mounting portion 12 to which each bar member 11 can be mounted. It is composed of a wiring box 13 as a concrete buried object provided on both left and right sides facing each other. In the concrete buried object apparatus 10, the bar material 11 is prevented from rotating in the circumferential direction in a state where the bar materials 11 are respectively mounted to the bar material mounting portions 12, and the bar material mounting portions 12 are prevented from being pulled out. Is formed.

First, the wiring box 13 will be described. As shown in FIGS. 1 and 2, the wiring box 13 made of a synthetic resin material has a bottom wall 14 having a square front shape and a peripheral edge of the bottom wall 14. It comprises a standing side wall 15 and a box body 16 formed in the shape of a rectangular box with a bottom and having an opening at the front. Mounting holes 17 for mounting a wiring device, a wiring device holding frame, or a box cover (neither shown) are provided on the inner surfaces of the upper and lower side walls 15, respectively. Also, each side wall 15 has a wiring,
Two knocks 18 through which the pipe can be inserted are formed (in FIG. 1, the knocks 18 on the upper side wall 15 and the left side wall 15 are formed).
Only shown).

The bar member mounting portions 12 are formed on both left and right sides of the box body 16. The bar material mounting portion 12 will be described in detail below.
As shown in FIG. 5, mounting grooves 19 extending along the length direction of the side walls 15 are formed inwardly of the box body 16 on the outer surfaces of the left and right side walls 15 on the bottom wall 14 side. As shown by the broken line in FIG. 2, both ends of each mounting groove 19 are attached to the mounting groove 1 respectively.
9 is recessed deeper inward of the box body 16 than the central portion side of 9, and the insertion groove 1 as an insertion portion is provided in the deep recessed portion.
9a is formed. The respective insertion grooves 19a are respectively formed on the adjacent side walls 15 forming the respective corner portions of the box body 16.
It is formed so as to straddle the upper and lower sides and is formed on both upper and lower portions of the left and right side walls 15.

As shown in FIG. 4, the length of the mounting groove 19 including the insertion groove 19a in the width direction is substantially the same as the length of the bar material 11 in the diameter direction. Also, FIG.
As shown by the broken line, each insertion groove 19a is formed so as to become wider along the direction in which the mounting groove 19 extends from the inner side toward the opening side. As shown in FIG. 1, FIG. 3 and FIG. 4, on the outer surface of each of the upper and lower side walls 15, support portions 20 that cross the mounting groove 19 are formed at both left and right portions on the bottom wall 14 side. The support portion 20 is formed with an engagement recess 20a with which the bar material 11 attached to the bar material attachment portion 12 can be engaged.

As shown in FIG. 5, in the upper and lower portions of the left and right side walls 15 of the bottom wall 14 at the positions corresponding to the respective insertion grooves 19a, from the left and right outer end edges of the bottom wall 14 to the box body. 16 A pair of notch grooves 21 extending inward are formed. A fixing piece 22 is formed between the cutout grooves 21, and each fixing piece 22 is elastically deformable. As shown in FIG. 3 and FIG. 4, each fixed piece 22 has a fixed protrusion 22a as a protrusion that forms a removal preventing means.
Are provided so as to protrude into the insertion groove 19a along the extending direction of the mounting groove 19. Each fixed ridge 22a has an insertion groove 19
It is formed so as to incline toward the bottom wall 14 side from the inside of a toward the outside.

Next, the bar material 11 will be described. As shown in FIGS. 1 and 2, the bar material 11 is formed of a metal rod having a circular cross section. In the central portion of the bar material 11, bent portions 11a formed by bending the bar material 11 along the axial direction so as to have a concave-convex shape, that is, a U-shape, are formed at two positions with a gap. There is. Each bent portion 11a is bent so as to become narrower in the protruding direction. Also, bar material 1
1, the tip end side of each bent portion 11a is 45 degrees (or 13 degrees) with respect to the extending direction of the central portion of the bar material 11.
It is bent so as to extend in a direction opposite to the protruding direction of the bent portion 11a in a state of forming 5 degrees).

As shown by the broken line in FIG. 2, a pair of bent portions 1
1a is formed so that it can be inserted into each insertion groove 19a of each side wall 15. Bar material 1 on each of the left and right side walls 15
By inserting the both bent portions 11a of the bar member 1 into the adjacent insertion grooves 19a, the bar members 11 are attached to the bar member mounting portion 1
2 is formed so that it can be attached. Also, the bar material mounting portion 1
When the bar material 11 is attached to 2, the both ends of the bar material 11 project from the box body 16. Then, as shown in FIG. 8, both ends of the bar member 11 are bound and fixed to the reinforcing bars 24 forming the skeleton of the concrete wall as the concrete structure by the binding wires 25, etc. It is designed to be supported by 24.

By installing the bar material 11 on the reinforcing bar 24, the wiring box 13 can be supported by the reinforcing bar 24, and the wiring box 13 and the bar material 1 can be supported.
The concrete buried object device 10 including 1 is installed on the reinforcing bar 24.

Next, a method of using the concrete buried object device 10 having the above structure will be described together with its operation. First, as shown in FIG. 2, the pair of bent portions 11a of the pair of bar members 11 are inserted into the pair of insertion grooves 19a of the left and right side walls 15, respectively. At this time, each bent portion 11a is formed narrower in the protruding direction, and the insertion groove 19a is formed wider as it goes from the inner side toward the opening side. The insertion work is done smoothly. Further, when the bent portion 11a is inserted deep inside the insertion groove 19a, the bent portion 11a comes into contact with the fixed projection 22a, but the fixed piece 22 elastically deforms outward, so that the bent portion 11a gets over the fixed projection 22a.

When the bent portion 11a gets over the fixed protrusion 22a, the fixed piece 22 returns to its original state due to its elastic deformation. When the fixing piece 22 returns, as shown in FIG. 6, the fixing projection 22a engages along the concave portion of the bent portion 11a. That is, as shown by the broken line in FIG.
In the insertion groove 19a, the insertion groove 1 is larger than the bent portion 11a.
The fixed ridge 22a is located on the opening side of 9a.

At the same time, as indicated by the broken line in FIG.
The central portion of the bar member 11 is inserted into the mounting groove 19, and as shown in FIG. 7, the engaging concave portion 20a is provided on the tip side of the bent portion 11a.
To prevent the bar material 11 from further entering inside the box body 16. Then, the bar material 11 is attached to the bar material attachment portion 12, and the bar material 11 is attached to the wiring box 13. At this time, as shown in FIG. 1, the tip end side of each bent portion 11a of each bar member 11 protrudes from the upper and lower side walls 15 to the outside of the box body 16, and both protrusion lengths are substantially the same.

As shown in FIG. 6, when the bent portion 11a and the fixed ridge 22a are engaged with each other, the bar material 11 and the wiring box 13, that is, the space between the bar material 11 and the bar material mounting portion 12 is provided. , The corresponding insertion grooves 19a of the pair of bent portions 11a
There is formed a removal prevention means for preventing the removal of the bar material 11 from the bar material mounting portion 12 of the bar material 11. In addition, the inner surfaces facing each other forming the insertion groove 19a are bent portions 11a.
The bent portion 11a is brought into contact with both outer surfaces of the U-shape that face each other, that is, by pressure contact, and the bent portion 11a is sandwiched in the insertion groove 19a.
It is possible to prevent the rotation of a in the insertion groove 19a.

Subsequently, both ends of the bar material 11 are bent in the direction of the reinforcing bar 24 from the positions projecting from the upper and lower side walls 15, respectively, and as shown in FIG.
4 is tied with a bind line 25. At this time, since both projecting portions of the bar material 11 are bent outward at 45 degrees (or 135 degrees) with respect to the extending direction of the central portion of the bar material 11, The work of attaching the ends to the reinforcing bars 24 is easily performed.

Subsequently, as shown in FIG. 8, a pair of molds 23 are erected so as to sandwich the wiring box 13, and one of the molds 23 is brought into contact with the end face on the opening side of the wiring box 13.
Furthermore, the mold 23 pushes the wiring box 13 toward the reinforcing bar 24. Then, the bar member 11 is flexibly deformed by applying a force in a direction in which the distance to the reinforcing bar 24 becomes shorter, and the wiring box 13 retracts in the reinforcing bar 24 direction,
Due to the elastic force of the bar material 11, the wiring box 13 forms the form 2
Pressed in 3 directions. As a result, the opening-side end surface of the wiring box 13 is brought into close contact with the mold 23. At this time,
Since the bent portion 11a is in contact with the inner surface of the insertion groove 19a and is sandwiched in the insertion groove 19a, the bar member 11 is prevented from rotating in the circumferential direction by the pressing, and the form of the wiring box 13 is prevented. The closeness to 23 is maintained.

Subsequently, when concrete is placed between the pair of molds 23, the placing pressure acts on the bar material 11 and the wiring box 13. Also at this time, the rotation of the bar material 11 in the circumferential direction is prevented by the contact between the inner surface of the insertion groove 19a and the bent portion 11a. In addition, the outer surface of each bent portion 11a extending in the radial direction contacts the inner surface along the width direction of the insertion groove 19a and the supporting portion 20, so that the axial movement of the bar material 11 is restricted.

Further, the bar member 11 is prevented from being dislocated from the bar member mounting portion 12 by the engagement between the bent portion 11a and the fixed projection 22a, and the wiring box 13 is prevented from being displaced or tilted, and the opening of the wiring box 13 is prevented. The close contact state of the side end surface with the mold 23 is maintained. Therefore, it is possible to prevent the problem that concrete enters the inside of the wiring box 13 through the opening. Further, the left and right side edges of the bottom wall 14 and the left and right side walls 15 are reinforced by the bar members 11 attached to both bar member attaching portions 12. Then, after the concrete is hardened, the concrete wall is constructed by removing the formwork 23, and the wiring box 1 is provided in the concrete wall.
3 is buried, and wiring equipment is attached to the wiring box 13.

According to the above embodiment, the following features can be obtained. (1) By inserting the bent portion 11a into the insertion groove 19a, the bent portion 11a is engaged with the fixed protrusion 22a so that the bar member 11 is attached in a state in which it is prevented from being removed from the bar member attaching portion 12. You can At the same time, the insertion groove 19a
The bar material 11 can be attached to the bar material mounting portion 12 in a state in which the bar material 11 is prevented from rotating in the circumferential direction by the contact between the inner surfaces facing each other and the bent portion 11a. As a result, unlike the conventional case where complicated processes such as welding, caulking or screw tightening work are performed, the work of attaching the bar member 11 to the wiring box 13 can be easily performed. Therefore, at the construction site, the work of attaching the bar material 11 to the large number of wiring boxes 13 can be promptly performed.

(2) By inserting the bent portion 11a into the insertion groove 19a, it is possible to prevent the bar material 11 in the bar material mounting portion 12 from rotating and pulling out in the circumferential direction. Therefore, it is possible to prevent the wiring box 13 to which the bar material 11 is attached from being tilted or displaced due to the pouring of concrete, and to bury the wiring box 13 at a desired position on the concrete wall. The wiring device attached to the wiring box 13 can be attached to a desired position on the concrete wall.

(3) Since the bar member 11 is prevented from slipping out of the bar member mounting portion 12 due to the engagement between the bent portion 11a and the fixed ridge 22a, the positional deviation and inclination of the wiring box 13 are prevented. As a result, the close contact state of the opening-side end surface of the wiring box 13 with the mold 23 is maintained. Therefore, it is possible to prevent the problem that concrete enters the inside from the opening of the wiring box 13.

(4) Even if concrete placing pressure acts on the wiring box 13, the bent portions 11a come into contact with the inner surface of the insertion groove 19a and the supporting portion 20, so that the bar member 1
It is possible to prevent the movement of 1 in the axial direction. Therefore,
The wiring box 13 can be embedded at a desired position in the concrete wall by preventing the wiring box 13 from tilting or shifting.

(5) Since the bent portion 11a is formed narrower in the protruding direction and the insertion groove 19a is formed wider from the inner side toward the opening side, the bent portion 11a is formed in the insertion groove 19a. The work of inserting the bent portion 11a can be smoothly performed.

(6) The central portion of the bar member 11 has a mounting groove 19
The engaging concave portion 20 is in contact with the inner surface, and the tip end side of the bent portion 11a is
Since it contacts the inner surface of the a, the box body 16 of the bar member 11
The bar material 11 can be positioned by limiting the inward entry. Therefore, when the bar material 11 is attached to the reinforcing bar 24, the problem that the bar material 11 enters and moves inside the box body 16 can be eliminated, and the attachment work can be performed quickly.

(7) Since the fixed protrusion 22a engages with the bent portion 11a in the insertion groove 19a, the removal of the bent portion 11a from the insertion groove 19a can be effectively prevented. (8) Bent portion 11 formed by bending the bar material 11
The removal preventing means is formed by a and the fixed protrusion 22a that can be engaged with the bent portion of the bent portion 11a. Therefore, as compared with the case of forming a means for preventing the bar material 11 from being pulled out from the bar material mounting portion 12 by a member different from the bar material 11 or the wiring box 13, it is possible to easily form the pull-out prevention means. You can

(9) One bar member 11 is attached to the bar member attaching portion 12 by inserting a pair of bent portions 11a into the insertion grooves 19a. Therefore, one bar member 11 can be firmly attached as compared with the case where one bar member 11 is attached to the bar member attaching portion 12 by inserting one bent portion 11a into the insertion groove 19a.

(10) The mounting groove 19, the insertion groove 19a and the fixed ridge 22a forming the bar member mounting portion 12 are formed on the bottom wall 14 side along the vertical direction of the left and right side walls 15, respectively. Therefore, by attaching the bar material 11 to the bar material attaching portion 12, the bottom wall 14 and the left and right side walls 1 are formed.
5 can be reinforced. Therefore, it is possible to prevent the bottom wall 14 and the left and right side walls 15 from being deformed by the concrete pouring pressure.

(11) Since each bent portion 11a is formed by bending a U-shaped metal rod, the bent portion 11a abuts the inner surface of the insertion groove 19a over a wide range. Therefore, it is possible to make it difficult for the bending portion 11a to be deformed by the force acting on the bending portion 11a, and to reliably prevent the bar material 11 from rotating in the circumferential direction.

(12) The bar material 11 is the bar material mounting portion 12
When attached to the bar member 11, the protruding lengths from the wiring box 13 on both ends of the bar member 11 are substantially the same.
The wiring box 13 can be positioned in the central portion of the bar material 11 only by attaching the to the bar material attachment portion 12. Therefore, the work of positioning the wiring box 13 at the center of the bar material 11 in the length direction can be omitted,
The work of attaching the bar material 11 to the wiring box 13 can be easily performed.

(13) The bar material 11 is attached to the bar material mounting portion 12
, The tip ends of the pair of bar members 11 extend outwardly of the wiring box 13 at an angle of 45 degrees, so that the end portions of the bar members 11 can be easily attached to the reinforcing bars 24. .

The above embodiment may be modified as follows. In the embodiment, the bar member 1 is located on the tip side from the bent portion 11a.
45 degrees (or 135
However, the angle may be set arbitrarily, and the tip side of the bent portion 11a may not be bent.

In the embodiment, when the bar member 11 is attached to the bar member mounting portion 12, the position of the bent portion 11a is set so that the protruding lengths of the bar member 11 from the upper and lower side walls 15 are substantially the same. However, the bent portion 11a may be formed at a position where the protrusion lengths are not substantially the same.

In the embodiment, the bar material 11 is bent into a U-shape to form the bent portion 11a. However, the bar material 11 is bent into an arc shape, a mountain shape, an Ω shape, or the like to form the bent portion 11a. Good.

In the embodiment, the bar material mounting portion 12 is formed on the bottom wall 14 side of each of the left and right side walls 15, but the bar material mounting portion 12 faces the opening side of the box body 16 in each of the upper, lower, left and right side walls 15 facing each other. You may form in an edge part. With this structure, the opening side of the box body 16 in each of the upper, lower, left and right side walls 15 can be reinforced by the bar member 11. Therefore, the strength of the opening side of the box body 16 can be improved, and the deformation of concrete due to the pouring pressure can be prevented.

The bar material mounting portion 12 may be formed on the bottom wall 14 side of each of the upper and lower side walls 15. Up and down or left and right side walls 15
Between the bottom wall 14 and the end of the box body 16 on the opening side, the bar member attaching portion 12 extending in the longitudinal direction of the upper and lower side walls 15 or the left and right side walls 15 may be formed.

In the embodiment, the bar material 11 is formed with the bent portions 11a at two locations, and the bar material mounting portion 12 of the wiring box 13 is provided with the insertion groove 19a and the fixed protrusion 22a at each of the two locations. The bar material 11 is formed with one or three or more bent portions 11a, and the bar material mounting portion 12 is formed with one or more or more insertion grooves 19a and fixed ridges 22a so as to correspond to the bent portions 11a. You may.

In the embodiment, the insertion groove 19a is formed so as to be located at the corner portion of the box body 16, but the insertion groove 19a may be formed at a position other than the corner portion of the box body 16.

In the embodiment, the removal preventing means is formed by engaging the fixed protrusion 22a with the bent portion 11a, but the bent portion 11a is provided with an engaging groove in which the fixed protrusion 22a can be engaged. Alternatively, when the bent portion 11a is inserted into the insertion groove 19a, the fixing protrusion 22a may be engaged with the engaging groove to form the removal preventing means.

Further, the fixing projection 22a is provided on the outer surface of the bent portion 11a, and the fixing projection 22a is formed on the inner surface of the insertion groove 19a.
Is provided with an engaging groove that can be engaged with. And the bent portion 11a
When the is inserted into the insertion groove 19a, the fixed protrusion 22a may be engaged with the engaging groove to form the removal preventing means.

In addition, a piercing body protruding in a conical shape, for example, is formed on the outer surface of the bent portion 11a, and when the bent portion 11a is inserted into the insertion groove 19a, the engaging protrusion bites into the inner surface of the insertion groove 19a. A removal prevention means may be formed.

In the embodiment, the concrete buried object device 10 is buried in the concrete wall as the concrete structure, but the concrete pillar is used as the concrete structure.
The concrete buried object device 10 may be buried in a concrete floor or the like.

In the embodiment, the concrete buried object device 10 is formed by the wiring box 13 and the bar member 11. However, at least the insertion groove 19a and the fixed protrusion 22a are formed in the box cover as the concrete buried object. The material attaching portion 12 may be formed, and the bar material 11 may be non-rotatably and firmly attached to the bar material attaching portion 12 to form the concrete buried object device 10. In such a configuration, the box cover 26 is attached to the wiring box 13, and the bar member 11 that is non-rotatably and firmly attached to the box cover 26 is attached to the reinforcing bar 24. As a result, the wiring box 13 can be supported by the reinforcing bar 24 via the box cover 26, and the bar member 11 can be prevented from rotating and the wiring box 13 can be prevented from moving.

In the embodiment, the concrete buried object device 10 is formed by the wiring box 13 and the bar member 11. However, the concrete buried object is formed with holes for screwing bolts on the outer surface of a concrete structure such as a concrete wall. A hole forming member (insert) or an opening forming member (end) that protects the open end of a protective pipe disposed in a concrete structure such as a concrete wall and forms an opening communicating with the inside of the protective pipe on the outer surface of the concrete structure. It may be embodied as a cover).

[0061]

As described in detail above, according to the invention described in claim 1, the bar material is prevented from rotating in the circumferential direction and being pulled out from the concrete buried object. It can be attached in a state, and the attaching work can be easily performed.

According to the invention of claim 2, claim 1
In addition to the effect of the invention described in (1), it is possible to effectively prevent the bar material from rotating in the circumferential direction. According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, it is possible to effectively prevent the bent portion from being pulled out from the insertion portion.

According to the invention of claim 4, claim 3
In addition to the effect of the invention described in (1), the pull-out preventing means can be easily formed. According to the invention described in claim 5, in addition to the effect of the invention described in any one of claims 1 to 4, a bending portion formed at only one position in the bar member is inserted into the insertion portion. The bar material can be firmly attached as compared with the case where the bar material is attached to the bar material attaching portion.

According to the invention of claim 6, claim 5
In addition to the effect of the invention described in (1), it is possible to reinforce the bottom wall and the side wall on which the bar material attachment portion is formed with the bar material. Therefore, it is possible to prevent the bottom wall and the side wall from being deformed by the concrete pouring pressure.

According to the invention of claim 7, claim 1
~ In addition to the effect of the invention according to any one of claims 6 to
Since the outer surface of the bent portion along the axial direction contacts the inner surface of the insertion portion over a wide range, when the force that rotates the bar material in the circumferential direction acts, the bent portion does not deform and the circumference of the bar material does not deform. It is possible to reliably prevent rotation in the direction.

According to the invention described in claim 8, claim 1
~ In addition to the effect of the invention according to any one of claims 7 to
When the bar material is attached to the bar material attachment portion, the projecting lengths of the bar material from both ends of the concrete material are substantially the same, and the concrete material can be positioned at the center of the bar material. Therefore, it is possible to omit the work of adjusting the protruding lengths of the bar members to position the concrete embedded object in the central portion in the length direction of the bar members, and to easily attach the bar members to the concrete embedded objects. It can be carried out.

According to the invention of claim 9, claim 1
~ In addition to the effects of the invention according to any one of claims 8 to 14,
The work of attaching the bar material to the reinforcing bar can be easily performed. According to the invention as set forth in claim 10, the bar member can be mounted in a state where the bar member is prevented from rotating in the circumferential direction and being pulled out, and the mounting work can be easily performed.

According to the eleventh aspect of the present invention, it is possible to install the concrete embedded material in a state in which it is prevented from rotating in the circumferential direction and being removed from the concrete embedded material, and the mounting work is easy. Can be done.

According to the twelfth aspect of the invention, in addition to the effect of the eleventh aspect of the invention, the work of attaching the bar member to the reinforcing bar can be easily performed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a concrete buried object device according to an embodiment.

FIG. 2 is a front view showing the concrete buried object device of the embodiment.

FIG. 3 is a plan view showing a wiring box of the embodiment.

FIG. 4 is a side view showing the wiring box of the embodiment.

FIG. 5 is a rear view of the wiring box of the embodiment with a bar member attached.

FIG. 6 is a side view showing a state in which a bar member is attached to the wiring box of the embodiment.

FIG. 7 is a plan view showing a state where a bar member is attached to the wiring box of the embodiment.

FIG. 8 is a side sectional view showing a concrete buried object device disposed between molds.

[Explanation of symbols]

10 ... Concrete buried object device, 11 ... Bar material, 11a
... Bent portion, 12 ... Bar material mounting portion, 13 ... Wiring box as concrete embedding, 14 ... Bottom wall, 19a ... Insertion groove as insertion portion, 22a ... Fixing as a projection forming a pull-out preventing means Rims, 23 ... Formwork, 24 ... Rebar.

Claims (12)

[Claims] 1. A bar material that can be bent in three-dimensional directions by hand, and a concrete buried object having a bar material mounting portion to which the bar material can be mounted. The bar material is mounted to the bar material mounting portion, By fixing both ends of the bar material projecting from the concrete embedding to the reinforcing bars that form the backbone of the concrete structure, the concrete embedding is supported by the bar and the bar material is erected to stand up to form the concrete structure. A concrete buried object device configured to press a concrete buried object against an installed formwork, wherein the bar member is a bent portion formed by bending the bar member in an uneven shape along an axial direction. And the bar member mounting portion,
The bending part is provided with an insertion part, the bending part is inserted into the insertion part to attach the bar material to the bar material mounting part, and the bending part inserted into the insertion part causes the bar material to move in the circumferential direction. A concrete embedding device, which is formed so as to prevent rotation, and which is provided with pull-out preventing means for preventing the bent portion from coming off from the insertion portion, between the bar material and the concrete embedding. 2. The concrete embedding device according to claim 1, wherein the bar material is formed so as to prevent the bar material from rotating in the circumferential direction by contact between the outer surface of the bent portion and the inner surface of the insertion portion. 3. The concrete embedding device according to claim 1, wherein the pull-out preventing means is formed by an engagement relationship formed between the insertion portion and the bent portion. 4. The concrete embedding apparatus according to claim 3, wherein the pull-out preventing means is formed by engaging the bent portion and a protrusion formed in the insertion portion. 5. A wiring box having a bottomed polygonal box shape having an opening in which the concrete embedding is formed so that a wiring device can be mounted therein, and the insertion portion is provided in a corner portion adjacent to the wiring box. 5. The bar member is provided with two bent portions so that the bent portions of one bar member are inserted into the adjacent insertion portions, and the bent portions are formed at two positions. The concrete buried object device described in. 6. The concrete buried object apparatus according to claim 5, wherein the insertion portion is provided on the bottom wall side of the wiring box. 7. The concrete according to any one of claims 1 to 6, wherein the bar material is bent in a U shape along the axial direction of the bar material to form a bent portion. Buried equipment. 8. The bent portion in the longitudinal direction of the bar member so that the protruding lengths of both ends of the bar member protruding from the concrete embedding are substantially the same in the state where the bar member is attached to the bar member mounting portion. The position is set, The concrete buried object apparatus as described in any one of Claims 1-7. 9. The bar member according to claim 1, wherein both end sides of the bar member are formed by bending the tip end side of the bent portion so as to form 45 degrees with respect to the central portion of the bar member. The concrete buried object device according to the above 1. 10. A bar material mounting portion for mounting a bar material bendable in a three-dimensional direction by hand, and both end sides of the bar material mounted on the bar material mounting portion form a skeleton of a concrete structure. A wiring box which is supported by the reinforcing bar by being fixed to the reinforcing bar and is pressed against a formwork erected for forming a concrete structure due to the tensile strength of the bar member, wherein the bar member is An insertion portion into which a bent portion formed by bending in a concavo-convex shape along the axial direction is inserted, the bending portion is inserted into the insertion portion, the bar material is attached to the bar material attachment portion, and the insertion portion of the bending portion is provided. The bar member is formed so as to prevent the bar member from rotating in the circumferential direction, and the bar member is provided with a removal preventing means for preventing the bent part from being removed from the insertion part. Wiring box . 11. A skeleton of a concrete structure having both ends projecting from the concrete embedding in a state of being bendable in a three-dimensional direction by hand and attached to a bar material attaching portion formed on the concrete embedding. A bar material for supporting a concrete embedded object by fixing it to an eggplant rebar and for pressing the concrete embedded object against a formwork erected for forming a concrete structure by tensile strength, A bar member, characterized in that it is provided with a bent portion which is bent in an uneven shape along an axial direction and can be inserted into an insertion portion formed in the bar member mounting portion. 12. The bar material according to claim 11, wherein the front end side is bent from the bent portion so that both end sides form 45 degrees with respect to the central portion.