JP2004244986A - Sleeve holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sleeve holder capable of disposing a sleeve simply and accurately into forms. <P>SOLUTION: The sleeve holder has an approximately C-shaped sectional clip section 12 engaged and fixed to a reinforcement 16, an approximately C-shaped sleeve holding section 13 holding the sleeve 18 for piping in the direction orthogonal to the reinforcement 16 and a connecting section 14 connecting the clip section 12 and the sleeve holding section 13 at a specified interval. The sleeve holding section 13 is opened upwards. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
INDUSTRIAL APPLICABILITY The present invention is used when burying and fixing a sleeve for forming a through hole for piping and wiring such as water supply and drainage equipment and electric equipment in a reinforced concrete structure such as a cloth foundation concrete, a concrete beam, or a concrete pillar. The present invention relates to a sleeve holder. More particularly, the present invention relates to a sleeve holder that can easily and accurately arrange a sleeve in a mold.
[0002]
[Prior art]
As a conventional sleeve holder 1, as shown in FIG. 4, a clip portion 2 having a substantially C-shaped cross section which is engaged and fixed to a reinforcing bar 6, and a piping sleeve 8 are held in a direction perpendicular to the reinforcing bar 6. There is one provided with a substantially C-shaped sleeve holding portion 3 and a connecting portion 4 for connecting the clip portion 2 and the sleeve holding portion 3 at a predetermined interval (for example, see Patent Document 1).
[0003]
In this sleeve holder 1, after the clip portion 2 is engaged and fixed to the reinforcing bar 6, and the sleeve 8 is attached to the sleeve holding portion 3, the inner surface of a mold (not shown) is provided at both open ends of the sleeve 8. Then, a reinforced concrete structure having a through hole formed therein was cast through a process of casting concrete into a formwork (not shown).
[0004]
[Patent Document 1]
JP-A-2002-47796 (claims, pages 2 to 4, FIG. 1)
[0005]
[Problems to be solved by the invention]
However, in this sleeve holder 1, the sleeve holder 3 was opened to the side. For this reason, the operator has to bend down to the position of the sleeve holding portion 3 and fit the sleeve 8 through the opening 3 b on the side of the sleeve holding portion 3.
[0006]
Moreover, the work of attaching the sleeve 8 to the sleeve holding portion 3 may be performed in a state where one side of a formwork (not shown) is erected after the reinforcing bars are assembled. The work of fitting the sleeve 8 through the opening 3b was very complicated.
[0007]
Further, in the sleeve holder 1, when a sleeve 8 having a large pipe diameter is fitted into the sleeve holder 3, a wire or a string or the like is used between the folded portions 3a formed at the opening edge of the sleeve holder 3. In this case, the holding property of the sleeve 8 is improved by binding the parts, but in this case, since the folded parts 3a on the side of the sleeve holding part 3 are bound, the binding work is extremely complicated.
[0008]
The present invention has been made in view of such a problem, and an object of the present invention is to provide a sleeve holder that can easily and accurately arrange a sleeve in a mold.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, a first aspect of the present invention provides a clip portion having a substantially C-shaped cross section that is engaged and fixed to a reinforcing bar, and a substantially C-shaped clip portion that holds a piping sleeve in a direction orthogonal to the reinforcing bar. A sleeve holding portion; and a connecting portion for connecting the clip portion and the sleeve holding portion at a predetermined interval, wherein the sleeve holding portion is open upward. The tool was the gist.
[0010]
The invention according to claim 2 is characterized in that the sleeve holding portion is made of synthetic resin, and the sleeve holding portion holds the piping sleeve by an elastic force derived from the synthetic resin. The gist of the sleeve retainer is as follows.
[0011]
According to a third aspect of the present invention, there is provided a sleeve holder according to the first or second aspect, wherein a folded portion is formed at an opening edge of the sleeve holding portion.
[0012]
The invention according to claim 4 is characterized in that the clip portion is made of a synthetic resin, and the clip portion is engaged and fixed to a reinforcing bar by an elastic force derived from the synthetic resin. The tool was the gist.
[0013]
The invention according to claim 5 is characterized in that a projection is provided at both ends of the peripheral surface of the clip portion, and in a state where the clip portion is engaged and fixed to a reinforcing bar, a binding wire is looped around the projection to clip. The sleeve holder according to claim 1 or 4, wherein the portion and the reinforcing bar are bound.
[0014]
According to a sixth aspect of the present invention, there is provided a sleeve holder according to the first aspect, wherein the sleeve holding portion, the clip portion, and the connecting portion are integrally formed.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the sleeve holder of the present invention will be described in more detail in accordance with one embodiment shown in the drawings. As shown in FIGS. 1 and 2, the sleeve holder 11 of the present invention includes a clip portion 12 and a connecting portion 14 that connects to the sleeve holding portion 13.
[0016]
In the sleeve holder 11 shown in FIG. 1, the clip portion 12, the sleeve holding portion 13, and the connecting portion 14 are made of polypropylene, polystyrene, styrene-butadiene-acrylonitrile copolymer (ABS), styrene-acrylonitrile copolymer (AS), It is made of synthetic resin such as acrylonitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR), and hard rubber, and they are integrally formed.
[0017]
The clip portion 12 has a substantially C-shaped cross section that can be attached to the reinforcing bar 16 by opening a part of the cylinder. The outer diameter of the clip portion 12 is provided so as to be slightly smaller than the inner diameter of the reinforcing bar 16. When the clip portion 12 is fitted into the reinforcing bar 16, the elastic force derived from the synthetic resin constituting the clip portion 12 is applied. It is adapted to be engaged and fixed to the reinforcing bar 16. In the example shown in FIG. 1, the clip portion 12 is made of a synthetic resin, but is not limited to this, and may be made of a thin metal plate such as an iron plate. In the example shown in FIG. 1, a bent portion 12 a is formed at the opening edge of the clip portion 12, so that the clip portion 12 can be easily fitted into the reinforcing bar 16.
[0018]
Further, protrusions 22 may be provided at both ends of the peripheral surface of the clip portion 12. In this case, in a state where the clip portion 12 is fixedly engaged with the reinforcing bar 16, the clip portion 12 and the reinforcing bar 16 can be bound by wrapping the binding wire 21 between the protruding portions 22, whereby the sleeve It is possible to prevent the clip portion 12 from coming off the reinforcing bar 16 by the weight of the concrete 18 that has been cast.
[0019]
The sleeve holding part 13 is provided on the side of the clip part 12 via a connecting part 14. The sleeve holding portion 13 has a substantially C-shaped cross section, and its outer diameter is provided to be slightly smaller than the inner diameter of the sleeve 18. The sleeve 18 is fitted into the sleeve holding portion 13. At this time, the outer peripheral surface of the sleeve 18 is held in a direction orthogonal to the reinforcing bar 16 by the elastic force derived from the synthetic resin constituting the sleeve holding portion 13. The opening 13b of the sleeve holding portion 13 is open upward, so that the sleeve 18 can be fitted from above. A folded portion 13a is formed at the opening edge of the sleeve holding portion 13, so that the sleeve 18 can be easily fitted. A sleeve 18 having a large diameter can be fitted into the sleeve holding portion 13. In this case, after the sleeve 18 is fitted, a string or the like is placed between the folded portions 13a of the opening edge to close the opening 13b. Thus, the sleeve 18 can be securely held so as not to come off. In the example shown in FIG. 1, the sleeve holding portion 13 is made of a synthetic resin, but is not limited to this, and may be made of a thin metal plate such as an iron plate.
[0020]
The connecting part 14 is a member that connects the clip part 12 and the sleeve holding part 13. Further, the connecting portion 14 has a function of holding the clip portion 12 and the sleeve holding portion 13 at a predetermined interval, and the cover thickness of the concrete with respect to the reinforcing steel is ensured by the length of the connecting portion 14. It has become.
[0021]
Next, an example in which the sleeve is buried and fixed in the cloth foundation concrete of a house building using the sleeve holder configured as described above will be described. As shown in FIGS. 2 and 3, a plurality of reinforcing bars 16 are erected inside the pair of form panels 15 at an interval of about 20 cm so as to be parallel to the form panels 15. Further, a plurality of auxiliary reinforcing bars 17 are connected to the plurality of reinforcing bars 16 in the lateral direction in parallel with the form panels 15.
[0022]
In this way, after connecting the plurality of reinforcing bars 16 and the plurality of auxiliary reinforcing bars 17 to assemble the reinforcing bars, a planned position for forming a through-hole for piping and wiring such as a water supply / drainage facility or an electrical facility for the cloth foundation concrete. In addition, a cylindrical sleeve 18 made of a paper tube or a PVC tube is provided.
[0023]
In the case of the sleeve holder 11 of the present invention, the clip portion 12 is fitted into the plurality of reinforcing bars 16 erected inside the pair of form panels 15, 15, and the clip portion 12 is engaged and fixed to the reinforcing bar 16. . Thus, the attachment of the sleeve holder 11 to the reinforcing bar 16 is completed. In this case, the orientation of the sleeve holding portion 13 connected to the clip portion 12 via the connecting portion 14 is adjusted so as to be parallel to the form panels 15 and 15.
[0024]
Next, the sleeve 18 is fitted into the opening 13b opening above the sleeve holding portion 13 from above. In the case of the sleeve holder 11 of the present invention, since the opening 13b of the sleeve holding portion 13 is opened upward, it is only necessary to push the sleeve 18 from above and fit it into the sleeve holding portion 13; The sleeve 18 can be easily and reliably disposed without being bent over to fit into the portion 13.
[0025]
When a large-diameter sleeve 18 is fitted into the sleeve holding portion 13, the sleeve 18 is detached by fitting a string or the like between the folded portions 13a at the opening edge and closing the opening 13b. Can be securely held.
[0026]
Thereafter, the opening surfaces at both ends of the sleeve 18 are brought into contact with the inner surfaces of the pair of form panels 15, 15, and in this state, concrete is poured into the inside of the pair of form panels 15, 15 and hardened, As shown in FIG. 3, through holes 20 for piping and wiring can be formed in the cloth foundation concrete 19.
[0027]
It should be noted that the scope of the present invention is not limited to the above embodiment, and can be freely changed within the scope described in “Claims”.
[0028]
【The invention's effect】
In the sleeve holder of the present invention, a clip portion having a substantially C-shaped cross section which is engaged with and fixed to a reinforcing bar, and a substantially C-shaped sleeve holding portion which holds a piping sleeve in a direction orthogonal to the reinforcing bar. A connecting portion for connecting the clip portion and the sleeve holding portion at a predetermined interval, and since the sleeve holding portion is open upward, the sleeve can be easily and accurately formed. It can be arranged in the frame.
[Brief description of the drawings]
FIG. 1 is a front view showing a state in which a sleeve is held in a mold by a sleeve holder of the present invention.
FIG. 2 is a perspective view showing a process of holding a sleeve in a mold by the sleeve holder of the present invention.
FIG. 3 is a perspective view showing a reinforced concrete structure having a through hole.
FIG. 4 is a front view showing a conventional sleeve holder.
[Explanation of symbols]
Reference Signs List 12 clip part 12a folded part 13 sleeve holding part 13a folded part 13b opening 14 connecting part 15 form panel 16 rebar 18 ··sleeve

Claims (6)

A clip portion having a substantially C-shaped cross section which is engaged and fixed to a reinforcing bar, a substantially C-shaped sleeve holding portion for holding a piping sleeve in a direction perpendicular to the reinforcing bar, and the clip portion and the sleeve holding portion And a connecting portion for connecting at an interval, wherein the sleeve holding portion is open upward. The sleeve holder according to claim 1, wherein the sleeve holder is made of a synthetic resin, and the sleeve holder holds the piping sleeve by an elastic force derived from the synthetic resin. 3. The sleeve holder according to claim 1, wherein a folded portion is formed at an opening edge of the sleeve holder. 2. The sleeve holder according to claim 1, wherein the clip portion is made of a synthetic resin, and the clip portion is engaged and fixed to a reinforcing bar by an elastic force derived from the synthetic resin. Protrusions are provided at both ends of the peripheral surface of the clip portion, and in a state where the clip portion is engaged and fixed to the reinforcing bar, a binding wire is looped around the protrusion to bind the clip portion and the rebar. The sleeve holder according to claim 1 or 4, wherein The sleeve holder according to claim 1, wherein the sleeve holder, the clip part, and the connecting part are integrally formed.

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