JP4041866B2 - Sleeve holder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is used when embedding and fixing a sleeve for forming a through-hole for piping and wiring of a water supply / drainage facility and an electrical facility in a reinforced concrete structure such as a cloth foundation concrete, a concrete beam, or a concrete column. The present invention relates to a sleeve holder. More specifically, the present invention relates to a sleeve holder that allows a sleeve to be easily and accurately disposed in a mold.
[0002]
[Prior art]
As shown in FIG. 4, the conventional sleeve holder 1 holds the clip portion 2 having a substantially C-shaped cross-section that is engaged and fixed to the reinforcing bar 6, and the piping sleeve 8 in a direction orthogonal to the reinforcing bar 6. There has been provided a substantially C-shaped sleeve holding portion 3 and a connecting portion 4 that connects the clip portion 2 and the sleeve holding portion 3 at a predetermined interval (see, for example, 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 the mold (not shown) is attached to both open ends of the sleeve 8. After that, a reinforced concrete structure in which a through hole was formed was placed through a process of placing concrete in a mold (not shown).
[0004]
[Patent Document 1]
JP 2002-47796 A (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 is open 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 from the opening 3b on the side of the sleeve holding portion 3.
[0006]
Moreover, the attaching operation of the sleeve 8 to the sleeve holding portion 3 may be performed in a state in which one side of a formwork (not shown) is built after assembling the reinforcing bars. The operation of fitting the sleeve 8 from the opening 3b is very complicated.
[0007]
Further, in the sleeve holder 1, when the sleeve 8 having a large diameter is fitted into the sleeve holder 3, the folded portion 3 a formed at the opening edge of the sleeve holder 3 is connected with a wire or a string. The holding performance of the sleeve 8 is increased by binding, but in this case, the folded portion 3a on the side of the sleeve holding portion 3 is bound, so that the binding operation is extremely complicated.
[0008]
The present invention has been made in view of such problems, and an object of the present invention is to provide a sleeve holder capable of easily and accurately disposing a sleeve in a mold.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is a substantially C-shaped clip portion having a substantially C-shaped cross section that is engaged and fixed to a reinforcing bar and a pipe sleeve that holds the pipe sleeve in a direction orthogonal to the reinforcing bar. A sleeve holding part, and a connecting part for connecting the clip part and the sleeve holding part at a predetermined interval;
The sleeve holding part is open upward, and the piping sleeve can be pushed into the sleeve holding part from above and fitted into the sleeve holding part.
Protrusions are provided at both ends of the peripheral surface of the clip part, and the clip part and the reinforcing bar can be bound by winding a binding wire between the protrusions in a state where the clip part is engaged and fixed to the reinforcing bar. a sleeve holder, characterized in that the set to its gist.
[0010]
According to a second aspect of the present invention, the sleeve holding portion is made of a synthetic resin, and the sleeve holding portion holds the piping sleeve by an elastic force derived from the synthetic resin. The gist of this was a sleeve holder.
[0011]
The gist of the invention according to claim 3 is that the folded portion is formed at the opening edge of the sleeve holding portion.
[0012]
According to a fourth aspect of the present invention, the clip portion is made of a synthetic resin, and the clip portion is engaged and fixed to the reinforcing bar by an elastic force derived from the synthetic resin. The ingredient was the gist.
[0013]
(Delete)
[0014]
The invention according to claim 5 is the gist of the sleeve holder according to claim 1 , wherein the sleeve holding portion, the clip portion, and the connecting portion are integrally formed.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the sleeve holder of the present invention will be described in more detail according to an 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 is connected 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 a synthetic resin such as acrylonitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR), or hard rubber, and these are integrally molded.
[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, and 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 used. It is adapted to be engaged and fixed to the reinforcing bar 16. In addition, in the example shown in FIG. 1, although the clip part 12 was comprised with the synthetic resin, you may comprise with metal thin plates, such as not only this but an iron plate. Further, in the example shown in FIG. 1, the folded portion 12 a is formed at the opening edge portion of the clip portion 12, and can be easily fitted into the reinforcing bar 16.
[0018]
Further, protrusions 22 are provided at both ends of the peripheral surface of the clip part 12 , and the binding wire 21 is wound around the protrusions 22 in a state where the clip part 12 is engaged and fixed to the reinforcing bar 16. The clip part 12 and the reinforcing bar 16 can be bound, and thereby the clip part 12 can be prevented from being detached from the reinforcing bar 16 due to the weight of the sleeve 18 and the placed concrete.
[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. Further, the opening 13b of the sleeve holding portion 13 is opened upward so that the sleeve 18 can be fitted from above. Further, 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, the opening 13b is closed by placing a string or the like between the folded portions 13a of the opening edge. 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 synthetic resin, but is not limited thereto, and may be made of a thin metal plate such as an iron plate.
[0020]
The connecting portion 14 is a member that connects the clip portion 12 and the sleeve holding portion 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 bars is ensured by the length of the connecting portion 14. It has become.
[0021]
Next, an example of embedding and fixing a sleeve 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 at intervals of about 20 cm so as to be parallel to the formwork panels 15 and 15 inside the pair of formwork panels 15 and 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 formwork panels 15 and 15.
[0022]
In this way, a plurality of reinforcing bars 16 and a plurality of auxiliary reinforcing bars 17 are connected to assemble the bar arrangement, and then a planned position for forming a through hole for piping and wiring of a cloth foundation concrete water supply / drainage facility and electrical facility In addition, a cylindrical sleeve 18 made of a paper tube or a PVC tube is disposed.
[0023]
In the case of the sleeve holder 11 of the present invention, the clip portion 12 is fitted into a plurality of reinforcing bars 16 standing on the inner side of the pair of formwork panels 15, 15, and the clip portion 12 is engaged and fixed to the reinforcing bars 16. In this state, the binding wire 21 is hung between the protrusions 22 provided at both ends of the peripheral surface of the clip portion 12 to bind the clip portion 12 and the reinforcing bar 16 together. Thereby, 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 to be parallel to the formwork panels 15 and 15.
[0024]
Next, the sleeve 18 is fitted into the opening 13b that opens above the sleeve holding portion 13 from above. In the case of the sleeve holder 11 according to 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 to fit into the sleeve holding portion 13, and the sleeve 18 is held in the sleeve holding manner. The sleeve 18 can be easily and reliably disposed without bending the body 13 so as to be fitted into the portion 13.
[0025]
When the sleeve 18 having a large diameter is fitted into the sleeve holding portion 13, after the sleeve 18 is fitted, the sleeve 18 is detached by closing the opening 13b by putting a string or the like between the folded portions 13a of the opening edge. So that it can be held securely.
[0026]
Thereafter, the opening surfaces at both ends of the sleeve 18 are brought into contact with the inner surfaces of the pair of formwork panels 15 and 15, in this state, concrete is placed inside the pair of formwork panels 15 and 15 and cured, As shown in FIG. 3, a through hole 20 for performing piping and wiring can be formed in the fabric foundation concrete 19.
[0027]
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 substantially C-shaped clip portion that is engaged and fixed to the reinforcing bar, and a substantially C-shaped sleeve holding portion that holds the 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 opened upward, the sleeve can be easily and accurately molded. It can be arranged in a frame.
[0029]
Further, in the sleeve holder of the present invention, the clip portion and the reinforcing bar are formed by wrapping a binding wire between the protrusions provided at both ends of the peripheral surface of the clip portion in a state where the clip portion is engaged and fixed to the reinforcing bar. Accordingly, it is possible to prevent the clip portion from being detached from the reinforcing bar due to the weight of the sleeve and the placed concrete.
[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 the sleeve in the mold by the sleeve holder of the present invention.
FIG. 3 is a perspective view showing a reinforced concrete structure in which a through hole is formed.
FIG. 4 is a front view showing a conventional sleeve holder.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 12 ... Clip part 12a ... Folding part 13 ... Sleeve holding part 13a ... Folding part 13b ... Opening 14 ... Connection part 15 ... Formwork panel 16 ... Reinforcing bar 18 ··sleeve

Claims (5)

A clip portion having a substantially C-shaped cross section that is engaged and fixed to the reinforcing bar, a substantially C-shaped sleeve holding portion that holds the piping sleeve in a direction orthogonal to the reinforcing bar, and the clip portion and the sleeve holding portion are predetermined. And a connecting portion to be connected with an interval of
The sleeve holding portion is open upward, and the piping sleeve can be pushed into the sleeve holding portion from above and fitted into the sleeve holding portion.
Protrusions are provided at both ends of the peripheral surface of the clip part, and the clip part and the reinforcing bar can be bound by winding a binding wire between the protruding parts in a state where the clip part is engaged and fixed to the reinforcing bar. A sleeve holder characterized by that.   2. The sleeve holder according to claim 1, wherein the sleeve holding part is made of a synthetic resin, and the sleeve holding part holds the piping sleeve by an elastic force derived from the synthetic resin.   The sleeve holder according to claim 1, wherein a folded portion is formed at an opening edge of the sleeve holding portion. 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 the reinforcing bar by an elastic force derived from the synthetic resin.   The sleeve holder according to claim 1, wherein the sleeve holding portion, the clip portion, and the connecting portion are integrally formed.

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