JPH0240378Y2 - - Google Patents

Description

[Detailed description of the invention] <Technical field> This invention relates to a pipe catch for piping.
More specifically, the present invention relates to a pipe catch for piping interposed between the inner circumferential surface of a tapered through hole formed in a concrete body and a pipe inserted into the through hole.

<Prior Art> Conventionally, in the construction of piping for buildings, a pipe for piping is inserted into a through-hole that is pre-formed in a concrete frame, and the pipe inserted into the through-hole is The gap created between the through hole and the inner circumferential surface is closed by filling it with concrete or mortar.

<Problems to be solved by the invention> In the above-mentioned piping construction, it is troublesome to pack mortar etc. to close the gap in the through hole, and one side of the through hole is closed with a plywood board etc. Then, it was necessary to carry out the work of packing the mortar and the like, which made the work even more troublesome.

<Purpose> This idea was made in view of the above problems, and was designed to close gaps in through holes in concrete structures.
It is an object of the present invention to provide a pipe catch for piping that can be easily and quickly carried out.

<Means for solving the problem> To achieve the above object, the pipe catch for piping of this invention has a pipe catch that is connected to the inner circumferential surface of a tapered through hole formed in a concrete structure, and which is inserted into the through hole. It is a pipe catch that is interposed between the pipe and the pipe, and is made of a cylindrical body made of separably assembled concrete pieces. It is characterized by having a peripheral surface.

<Example> Hereinafter, an example will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a pipe catch 1 for piping of this invention. Above pipe catch 1
is a divisible cylindrical body made up of half-split cylindrical concrete pieces 1a, 1a, and its outer shape is shaped like a truncated cone, and the outer circumferential surface 11 is made of concrete. It is formed in a taper that matches the inner circumferential surface of the tapered through hole 4 (see FIG. 2) of the frame 3, and can tightly surround the outer circumference of the pipe P with the inner circumferential surface 12. The outer diameter and height of the pipe catch 1 are formed to match the through hole 4 of the concrete frame 3.

With the above configuration, as shown in FIG. sandwich it in,
In this sandwiched state, the pipe catch 1 is brought along with the pipe P and inserted into the through hole 4, thereby closing the gap 5 created between the pipe P and the inner circumferential surface of the through hole 4. Before inserting the pipe catch 1, one or both of the through hole 4 and the pipe catch 1 are coated with concrete bond, caulking agent, mortar, etc., and the pipe catch 1 and the concrete slab 3 are joined together.

In this way, by using the pipe catch 1 of this invention, the gap 5 in the through hole 4 can be closed with one touch. Also, at the same time as piping, the gap 5
Since the pipe is blocked, the route of the piping can be immediately set. In particular, since the pipe catch 1 is made up of divisible concrete pieces 1a, it can be easily attached to the pipe P.

The through-hole 4 of the concrete body 3 described above is formed by embedding a hole-forming hole pad 6 made of synthetic resin in the concrete body 3 and removing it (see FIG. 3).

More specifically, the hole pad 6 has a double structure consisting of an outer layer 60 made of synthetic resin foam and an inner layer 61 fitted inside the outer layer 60. It is formed in a truncated conical shape to form a truncated conical shape, and the outer dimension on the small diameter side is set to be larger than the outer diameter of the pipe P for piping by a predetermined dimension. Furthermore, a recess 60a is formed inside the outer layer 60, and the inner layer 61 is removably fitted into the recess 60a, with the large-diameter end 60b being the opening side. The recess 60a is formed in a tapered shape with a narrow bottom side. Furthermore, the outer layer body 60
is formed by so-called bead molding to form a skin layer on the outer circumferential surface which is the contact surface against concrete.

Examples of the synthetic resin foam constituting the outer layer body 60 include polyethylene foam, polystyrene foam, and resin foam in which polyolefin resin and polystyrene resin are at least partially graft-bonded [trade name: Piocelan; Sekisui [manufactured by Kaseihin Kogyo Co., Ltd.], and the latter is particularly suitable because it has good separation from concrete.

On the other hand, the inner layer body 61 has a recess 6 in the outer layer body 60.
It is formed into a truncated conical shape that matches the shape of the outer layer 60, and is buried until it is flush with the end surface 60b of the outer layer 60. The inner layer 61 is made of a synthetic resin foam made of the same material as the outer layer 60.

FIG. 4 is a process diagram for forming a through hole 4 in a concrete slab 3a using the hole putt 6. First, as shown in FIG. Fix 6. At this time, the end face 60c on the small diameter side is fixed in contact with the slab surface of the temporary frame 2. Its fixation is
This can be easily done by pulling out the inner layer 61 from the recess 60a of the outer layer 60 and driving a nail into the temporary frame 2 through the bottom of the recess 60a. After the nailing is completed, the inner layer 61 is fitted into the recess 60a of the outer layer 60 again to ensure the pressure resistance of the hole pad 6.

Next, concrete is poured around the hole patch 6 and is solidified to form a concrete slab 3a in which the hole patch 6 is embedded (see FIG. 4B). At this time, the concrete placement height is set to be lower than the height of the hole patch 6 so that the upper surface of the hole patch 6 is not covered with concrete. According to the above, concrete slab 3a
A cavity can be formed in the buried part of the hole pad 6. Then, the hole pad 6 buried in the concrete slab 3a is extracted from the concrete slab 3a, and a tapered through hole 4 corresponding to the hole pad 6 is formed (see FIG. 4C). When removing the hole patch 6, the inner layer 61 is removed from the outer layer 60, and then the outer layer 60 is removed from the concrete slab 3a. In this way, if the inner layer body 61 is pulled out first, the outer layer body 60 can be contracted inward, so that the outer layer body 60 can be pulled out without difficulty. Even when the inner layer body 61 is pulled out, since the inner layer body 61 and the outer layer body 60 are tapered-fitted, the inner layer body 61 can be pulled out without difficulty. Through the above steps, a through hole 4 suitable for fitting the invented pipe catch 1 is formed.
Note that the inner layer body 61 can also be formed of rubber, non-foamed resin, or the like. In addition, the inner layer body 61
A finger hole for extraction may be formed in the hole.

The pipe catch 1 of this invention is not limited to the above-mentioned embodiment, and for example, the pipe catch 1 is further divided into a plurality of concrete pieces 1.
Various design changes can be made without changing the gist of this invention, such as configuring it by a.

<Effects of the invention> As described above, according to the pipe catch for piping of this invention, since the pipe is inserted into the through-hole of the concrete structure by sandwiching the pipe, the gap in the through-hole can be easily and quickly closed. This has the unique practical effect of facilitating piping construction, shortening the construction period, and reducing costs.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the pipe catch for piping of this invention, Fig. 2 is a sectional view showing the state of use, Fig. 3 is a perspective view of a hole part for hole formation, and Fig. 4 is: FIG. 3 is a cross-sectional view showing a step of forming a through hole. 1...Pipe catch, 1a...Concrete piece, 4...Through hole.

Claims (1)

[Scope of utility model registration request] A pipe catch that is interposed between the inner circumferential surface of a tapered through hole formed in a concrete body and a pipe inserted into the through hole, and is made of a cylindrical body made of divisible combinations of concrete pieces. A pipe catch for piping, characterized in that it has a tapered outer circumferential surface that matches the inner circumferential surface of a through hole, and an inner circumferential surface that surrounds the pipe.