JPH0236847Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a sleeve pipe used to form a penetration part through which a pipe or the like passes through a wall, floor, or the like.

Prior Art When piping is installed through a wall, floor, etc., a penetration part 3 larger than the outside diameter of the piping 2 is usually provided in the wall, floor, etc. (hereinafter referred to as floor) 1, as shown in Fig. 9. After piping is installed through the penetration part 3,
The gap between the pipe 2 and the pipe 2 is backfilled with mortar 4 to prevent flames from spreading to adjacent rooms or smoke from spreading in the event of a fire.

Conventionally, in order to form a penetration part, as shown in FIG.
After pouring and solidifying, the formwork 7 was removed, and the penetration part 3 was formed in the floor etc. as shown in FIG.

However, although it is easy to cut the non-perforated paper tube to a predetermined length, if the pipe is backfilled with the pipe attached to the penetration part, the non-perforated paper tube may be cut into pieces in the event of a fire.
In addition to burning and disappearing, creating a gap, the backfilling part may fall off, causing flames to spread from here to the next room or smoke to rise, so before backfilling,
This must be removed so that the backfill part can be directly bonded to the floor structure, etc., which is time-consuming.Also, since non-porous metal pipes do not burn, they can be backfilled without being removed from the penetration area. However, there are drawbacks such as the lack of integration between the backfill mortar and the framework such as the floor.

As a countermeasure against this problem, a method using a sleeve tube 9 having a large number of small through holes 8 in the tube wall as shown in FIG. 12 may be considered. That is, when the sleeve pipe 9 is attached to the formwork 7 as shown in FIG. 13 and concrete slurry is poured, as shown in FIG. The backfilling mortar does not flow into the small through hole 8 in large quantities, but solidifies in a state that slightly protrudes from the small through hole 8, forming a through part 10 to which the sleeve tube 9 is firmly fixed on the inner peripheral surface. It is integrated with the floor concrete frame through the concrete floor, allowing for strong backfilling.

Problems with the Prior Art However, if the balance between the size of the small through hole 8 and the fluidity of the concrete slurry is lost, the sleeve pipe will not remain protruding from the small concrete through hole 8, and a large amount will flow into the sleeve pipe. This has the disadvantage that the shape of the penetrating portion 10 is spoiled, and in some cases, it becomes difficult to install piping to the penetrating portion 10.

Purpose and structure of the invention In view of the above circumstances, this invention has been developed based on the size of the through hole,
The purpose of this is to provide a penetration sleeve pipe in which a penetration part of a predetermined shape is formed and can be firmly backfilled regardless of the fluidity of the concrete slurry to be poured. , a penetrating sleeve tube consisting of a tubular body of a predetermined length provided with a large number of through holes, and an inner tube or inner sheet that contacts the inner circumferential surface of the tubular tube and closes the through holes.

Specific structure and function of the idea The present invention will be explained below with reference to the drawings.

1 to 3 show an embodiment of a sleeve tube having a penetration portion according to the present invention, and FIG. 1 shows a tubular body 22 having a plurality of through holes 21 in the tube wall. The outer circumferential surface of the inner tube 23 shown in FIG. 2 is inscribed in the inner circumferential surface of this tubular body 22 as shown in FIG. configured.

As the material for the tubular body 22, rigid materials such as metals such as iron and aluminum, plastics such as vinyl chloride and polyethylene, paper asbestos, and fibrous moldings such as glass fibers can be used.

When making a tubular body with a through-hole using these materials, a through-hole of a predetermined size is punched out in a plate material, rolled into a tubular shape, and both ends are welded, glued, bolted, etc. or connect the
This is done by punching out through holes after forming the tubular body.

Further, as the inner tube 23, a tube made of metal, plastic, or the like and having a smooth outer circumferential surface and a predetermined size is used. A handle for pulling out the tube from the tubular body 22 may be provided inside the tube.

The penetration part 25 is made using the above-mentioned penetration part sleeve pipe 24.
To form this, as shown in FIG. 4, a sleeve pipe 24 of a predetermined size is secured to a predetermined position of the formwork 7 with nails 26 or the like, and concrete slurry is poured. At this time, as shown in FIG. 5, the concrete slurry 27 flows around the penetration sleeve tube 24, but is blocked by the outer surface of the inner tube 23, and does not enter the inside of the tubular body 22, but flows into the through hole. flows in and solidifies as it is. Therefore, when the inner tube 23 is pulled out and removed after it has solidified to some extent, a penetration portion 2 of a predetermined size is formed with the tubular body 22 biting into the inner peripheral surface.
5 is formed with a smooth inner peripheral surface. When the pipe 2 is passed through this penetration part 25 and backfilling is performed, the backfilling mortar 28 is integrated with the concrete frame 27 such as the floor through the through hole 21, and the tubular body 22 is embedded as shown in FIG. A strong backfill area is formed.

It is preferable to use a non-combustible material such as metal or asbestos for the tubular body 22, but even if flammable plastic, paper, etc. are used, if the total area of the through-holes 21 is increased, the skeleton will become thinner. Because it is surrounded by concrete structure and backfill mortar, it is difficult to burn, and even if it burns and disappears, only a thin net-like passage will be created.
Therefore, the backfilled portion will not fall off.
Therefore, the spread of fire or smoke to adjacent rooms is prevented.

In the above explanation, the tubular body is made of a plate with square through holes punched out, but a plastic injection molded product or a tubular body with circular through holes punched out as shown in Fig. 7a and b may also be used. Body 22', tubular body 22'' made of Exband metal, net, etc.
etc. can be used, and there are no restrictions on the shape of the through hole.

Furthermore, FIG. 8 shows another embodiment of the penetrating sleeve tube 24 according to the present invention, in which an inner lining sheet 2 of cloth, paper, plastic, etc. is provided on the inner peripheral surface of the tubular body 22.
9 is pasted with an adhesive or adhesive to close the through hole 21. In this case, the inner sheet 29 is removed after the concrete slurry cast as described above has solidified.

Effects of the Invention As described above, the penetrating sleeve tube according to the present invention has an inner tube or an inner lining sheet provided inside the tubular body having a through hole in the tube wall, so that There is no need to consider the balance between the size of the through hole and the fluidity of the concrete slurry to be cast, and a through hole with a smooth inner surface and good dimensional accuracy can be easily formed. It has many advantages, such as being able to backfill without removing the concrete, solidly integrating the concrete structure and backfilling mortar, preventing peeling and separation due to combustion, and allowing the use of combustible materials.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the sleeve tube of the penetrating part according to the present invention, in which Figure 1 is a perspective view of the tubular body, Figure 2 is a perspective view of the inner tube, and Figure 3 is the through-hole tube. Figure 4 is a vertical cross-sectional view of the penetration sleeve pipe installed in the formwork, Figure 5 is a vertical cross-sectional view showing the state of concrete being poured, and Figure 6 is a vertical cross-sectional view of the sleeve pipe of the penetrating part. 7a and 7b are perspective views showing other examples of the tubular body;
The figure is a longitudinal cross-sectional view showing another embodiment of the present invention, and FIGS. 9 to 11 show an example of conventional backfilling or penetrating part forming method. FIG. 10 is a vertical cross-sectional view showing a state in which a penetrating portion is formed using a non-porous paper tube or a non-porous metal tube, FIG. 11 is a perspective view of the formed penetrating portion, and FIGS. Fig. 14 shows another example of a conventional sleeve pipe, and Fig. 12 is a perspective view, and Fig. 1
FIG. 3 is a perspective view of the structure attached to the formwork, and FIG. 14 is a partial longitudinal cross-sectional view showing the state in which concrete slurry is poured. 1...Walls, floors, etc. (floors, etc.), 2...Piping, 3
... Penetration part, 4 ... Backfill mortar, 5 ... Non-perforated paper tube, 6 ... Non-porous metal pipe, 7 ... Formwork, 8 ...
Small through hole, 9...Sleeve pipe, 10...Penetration part,
21... Through hole, 22... Tubular body, 23... Internal intubation tube, 24... Penetrating part sleeve tube, 25... Penetrating part, 29... Inner lining sheet.

Claims (1)

[Scope of utility model registration request] It is characterized by consisting of a tubular body of a predetermined length with a large number of through holes provided in the tube wall, and an inner tube or inner lining sheet that contacts the inner peripheral surface of the tubular body and closes the through holes. Penetration sleeve tube.