JPH0227269Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a system for connecting piping installed through a through-hole provided in a building partition such as a wall, ceiling, or floor to the through-hole. The present invention relates to a backfilling jig that is used for backfilling a penetrating portion that is a gap and is easily attachable and detachable and can be used repeatedly.

[Prior Art] When various types of piping are installed through through-holes provided in partitions such as walls or floors of buildings, the through-holes, which are ring-shaped gaps between the through-holes and the pipes, are usually filled. Filling with return material prevents the spread of fire or smoke from one chamber to the adjacent chamber through the through hole in the event of a fire. Conventionally, when performing such backfilling, the backfilling jig 9 is placed in the state shown in the vertical cross-sectional view and plan view (FIG. 5 - line arrow view) in FIGS. 5 and 6. Installation is in progress. This backfilling jig 9 is usually a plate made of calcium silicate or plywood, and has a hole 9a in the center that matches the outer periphery of the pipe 6. This plate body is divided into two parts 9b and 9c along the diameter axis of the hole 9a, and is fixed to a wall or floor 7, etc. with the pipe 6 in between, with nails 10, and the wall or floor 7, etc. and the pipe are fixed to each other with nails 10. Opening 8 on one side (lower in the case of floor or ceiling) of the penetration part 8 of the ring-shaped gap between 6 and 6.
A is closed, and cement mortar or mortar mixed with lightweight aggregate, inorganic fibers, etc. is injected and solidified through the other opening 8b, or a noncombustible material such as glass fiber is pushed in to close it.

However, the above-mentioned backfilling jig 9 takes time and effort to install, and if it is nailed, it will damage other walls, floors, etc., and mortar will adhere to the surface of the jig and harden. It has drawbacks such as being easy to clean and can only be used repeatedly.

[Problems to be Solved] Therefore, the purpose of the present invention is to provide a jig for backfilling a penetration part that can be used by enclosing a pipe and sealing the opening of the penetration part easily and repeatedly, and that does not allow the attachment of mortar or the like. Our goal is to provide the following.

[Means for solving the problem] The present invention can achieve the above object, and its gist is that the outer circumferential surface of a pipe installed through a through hole provided in a building partition surface, The jig is a jig for closing one opening of a penetrating portion formed with the inner wall of the hole, and is an annular body made of a hydrophobic soft synthetic resin having an inner diameter that is approximately the same as the outer circumference of the tube, The annular body has one or more cut points, and detachable connecting members are attached to both opposing faces of the cut points. A jig for backfilling a penetrating part is provided with a part.

The present invention will be explained below with reference to the drawings.

1 to 4 are explanatory diagrams of an embodiment of the jig according to the present invention and its usage method. FIG. 1 shows a perspective view of the jig according to the present invention, and FIG. FIG. 3 is a partially cutaway view corresponding to a view of the separating portion taken along the line, and shows a state in which the separating portion is separated with a certain gap.

FIG. 3 shows a longitudinal section of a state in which the jig according to the present invention is attached to the lower end of the post-piping penetration part, and corresponds to the - line arrow view in FIG.
A line arrow view is shown.

The backfilling jig 1 is an annular body having a hole 3 in the center with the same diameter as the outer diameter of the pipe 6, and is made of hydrophobic and flexible soft synthetic resin such as polyolefin or soft polyvinyl chloride. It is.

Further, the annular body is made light in weight by filling it with lightweight aggregate or using foamed resin, and the upper surface 2 is at least smooth and non-porous. Such a method of smoothing at least one surface so that there are no holes in the foaming is possible using a known method or a combination thereof, such as adjusting the cooling temperature of an injection mold for molding such an annular body. There is also a method of smoothing by contacting with a heated melting plate after molding. By making the upper surface, that is, the penetrating portion side, smooth and non-porous in this manner, adhesion of sticky backfilling material, etc., is almost eliminated, which is convenient for repeated use.

On the other hand, the annular body has a separation part 4. That is, the annular body is once cut, and removable connecting members 5 are attached to both opposing surfaces of the cut portion, so that the cut portions can be freely and easily separated and connected. As the connecting member 5, velvet fasteners, hooks, magnets, etc. are preferable because they have a small thickness and can be easily separated and connected.

As shown in FIG. 3, the jig 1 having the above-mentioned configuration is configured to insert the pipe 6 through the through hole in the floor 7 through the ring-shaped gap 8 in the outer periphery of the pipe 6 from below and in close contact with the outer periphery of the pipe 6. It can be attached by wrapping it around. The upper surface 2 of the jig 1 is smooth and non-porous, and faces the lower part 8a of the penetration part 8 filled with backfilling material. Piping 6
The jig is attached to the jig by separating and connecting the separating portion 4 of the jig. Figure 3 is - of Figure 4.
FIG. 4 shows a view taken along the - line in FIG. 3, and the jig 1 is attached closely around the pipe 6. The separating parts are connected by a connecting member 5 made of velvet fastener, and even if the penetrating part 8 is filled with backfilling material such as mortar, the connecting members 5 and 5 will not be separated.

[Operation and Effect] After the mortar etc. has solidified, the connecting members 5, 5 are separated and the jig 1 is removed.The jig is hydrophobic, soft, lightweight, and smooth at least on the penetrating part side, so the mortar etc. Separation from the backfilling material is extremely easy, and no intrusion into or adhesion to the jig is observed. Therefore, construction is easy, and the jig can be used repeatedly.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the jig according to the present invention, Fig. 2 is a vertical cross-sectional view of its separated part and in a separated state;
Fig. 3 is a longitudinal sectional view of the jig attached to the lower end of the penetration, Fig. 4 is a view taken along the - line in Fig. 3, Fig. 5 is a longitudinal sectional view of the conventional method, and Fig. 6 is the -
A line arrow view is shown. The main symbols are as follows: 1...Jig (for backfilling), 2...Surface (of the jig), 4...Separation part, 5...
...Connecting member, 6... Piping, 8... Penetration part.

Claims (1)

[Scope of utility model registration request] A jig for closing one opening of a penetrating portion formed between the outer peripheral surface of a pipe disposed through a through hole provided in a building division screen and the inner wall of the through hole, the jig having a diameter approximately equal to the outer periphery of the pipe. An annular body made of a hydrophobic soft synthetic resin having the same inner diameter, and a surface of the annular body facing the opening is at least smooth and non-porous, and
The annular body has one or more cut points, and both opposing faces of the cut points are provided with separation parts to which removable connecting members are attached. Jig for backfilling.