JPH0663171A - Fire preventing tool for through hole - Google Patents

Abstract

PURPOSE:To provide a wall and a fire protection for floor through holes, which can simply insert a plurality of synthetic resin pipes through a fire partition wall and a wall. CONSTITUTION:In a fire prevention 1 for floor through holes, which is fitted in a fire partition wall and a floor so as to insert a plurality of synthetic resin pipes therein, a thermoexpandable fire preventing member 5 having a plurality of through holes 6 are laid in a rectangular or oval shape conduit body adapted to be fitted in a through hole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire preventive tool for a through hole for inserting a synthetic resin tube or the like into a fire preventive partition wall and a floor.

[0002]

2. Description of the Related Art When a synthetic resin pipe is inserted through a fireproof partition wall and floor, a hole is formed in the fireproof partition wall and floor when the synthetic resin pipe is thermally melted due to a fire or the like. Function may be lost. As means for solving this problem, actual Kaihei 3-84489 and actual Kaihei 4-2 are used.
925, Actual Kaihei 4-14426 and Actual Kaihei 4-2508
No. 9 discloses a fire protection device in which an outer protective sleeve is filled with a thermally foamable (or thermally expansive) fire protection material having one insertion hole.

However, each of the fire protection devices disclosed in these documents has only one insertion hole, and therefore, it is attempted to penetrate a plurality of synthetic resin pipes in parallel or in parallel to the fire protection partition wall and the floor. In this case, since it is necessary to install fire protection equipment for each synthetic resin pipe, the construction requires labor and time, and the synthetic resin pipe penetrating portion occupies a large area of the fire protection partition wall and floor.

Furthermore, the need for a fireproof material for treating each synthetic resin tube increases, and since a sheet-shaped fireproof material is usually wound, the contact surface between the synthetic resin tube and the fireproof material is usually increased. There was a risk of voids and insufficient fire protection.

[0005]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a plurality of synthetic resin pipes can be collectively installed in a fireproof partition wall and floor in a short time, easily and compactly. The tube seeks to provide a wall and floor through hole fire protection with a small footprint in the partition wall and floor. Further, according to the present invention, the amount of expensive fireproof material used can be reduced. Further, since it is possible to previously form an insertion hole matching the shape of the synthetic resin pipe, the synthetic resin and the fireproof material are in close contact with each other, and stable fireproofing characteristics can always be obtained.

[0006]

In order to solve the above problems, the present invention is directed to a wall for fitting a fireproof partition wall and a through hole provided in a floor and inserting a plurality of synthetic resin pipes inside. A fire protector for a floor through hole, characterized in that at least a part of the inside of a rectangular or oval tubular body fitted into the wall through hole is filled with a heat-expandable fire preventive material having a plurality of through holes. Provided is a fire preventive for through holes.

[0007]

Since the fire protection equipment of the present invention has a plurality of synthetic resin pipe insertion holes per piece, a lot of manpower is required for the construction for inserting the plurality of synthetic resin pipes into the fire protection partition wall and floor. No time is required, and the area of the fireproof partition wall and floor occupied by the insertion portions of the plurality of synthetic resin pipes can be small.

Further, in the fire preventive device of the present invention, since a plurality of synthetic resin pipe insertion holes are provided in the heat-expandable fireproof material of the rectangular or oval tubular body, the space between two adjacent insertion holes is increased. There will be a relatively large amount of heat-expandable fireproof material on both sides of the closest part of the, and even if the insertion holes are made very close to each other, sufficient fireproof material will be supplied when the synthetic resin pipe is fused by heat. .
Therefore, a plurality of insertion holes can be provided close to each other, and the area in the fireproof partition wall and floor occupied by the synthetic resin insertion portion after the synthetic resin pipe is installed can be further reduced.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the fire preventive for wall and floor through holes of the present invention will be described more specifically with reference to the drawings. FIG. 1 is a perspective view of an example of a fire preventive tool 1 for wall and floor through holes of the present invention,
FIG. 3 shows a state in which the fire protection device 1 is attached to the fire protection partition wall 2.
The synthetic resin pipe 3 is inserted into the insertion hole of the fire protection device 1.
In FIG. 1, 4 is a prismatic or oval cylindrical body, 5 is a heat-expandable fireproof material, and 6 is an insertion hole provided in the heat-expandable fireproof material 5 for inserting a synthetic resin pipe. Is. Preferably, the rectangular or oval tubular body 4 and the heat-expandable fireproof material 5 are formed as half bodies divided by a plane passing through the center lines of all the insertion holes.

The prismatic or oval tubular body 4 has an approximately rectangular or oval cross section, and its inner surface fits with the outer surface of the heat-expandable fireproof material 5. This metal rectangular tubular body is formed by melting and contracting the synthetic resin pipe when the heat-expandable fireproof material expands in the event of a flame or the like without the expanded fireproof material being pushed outside. Functions to fill the open space with expanded fire protection. The end of the rectangular or oval tubular body 4 may entirely cover the outer end of the heat-expandable fireproof material 5, but the end 13 of the tubular body 4 is bent short as shown in FIG. By doing so, only the peripheral portion of the outer end of the heat-expandable fireproof material may be covered.

The tubular body can be made of any heat resistant material, but is preferably made of metal. Although a rectangular tubular body is shown in FIG. 1, it may be an elliptical shape as shown in FIG. The heat-expandable fireproof material 5 has a plurality of insertion holes 6 for inserting the synthetic resin tube 3. The diameter of this insertion hole 6 is substantially the same as or slightly larger than the outer diameter of the synthetic resin tube 3. As the material of the heat-expandable fireproof material 5, any material may be used as long as it has heat resistance and expands due to foaming or the like when heated. For example, the material described in JP-B-2-28632 can be used. .

The heat-expandable fireproof material 5 is usually arranged at both ends of the prismatic or oval cylindrical body, but it may be arranged over the entire cylindrical body. Further, a heat insulating plate 7 can be provided inside both or one of them, but this is not an essential member of the present invention. The space 8 formed by the heat-expandable fireproof material 5 arranged at both ends of the metal rectangular tubular body 4 may be the space as it is or may be filled with a heat insulating material or the like. It is preferable to provide an ear 9 on one side of the half body 4 and a pocket 10 for inserting the ear 9 on the other side of the half body 4 in order to integrate the half bodies forming the metal rectangular tubular body 4.

When the synthetic resin pipe (3) is melted by heat when a flame etc.
In order to sufficiently fill the space formed by the contraction, the thinnest portion (a in FIG. 2) between the outer surface of the synthetic resin tube 3 and the outer surface of the heat-expandable fireproof material 5 is a hole for inserting the synthetic resin. It is preferably ¼ or more of the diameter ( d 2 in FIG. 2). According to the present invention, since a plurality of insertion holes are provided in the heat-expandable fire-preventing material 5, a large amount of both side portions 12 of the closest portions (11 in FIG. 2) of the two adjacent insertion holes 6 are provided. There is a heat-expandable fireproof material. Therefore, even if the two adjacent insertion holes 6 are provided close to each other, it is possible to sufficiently supply the fireproof material that has been thermally expanded when the synthetic thermal resin tube is melted and contracted by heat.

For this reason, the interval ( b 1 in FIG. 2) between two adjacent insertion holes 6 can be made less than 1/2 of the diameter d of the insertion hole 6, and even less than 1/4. The interval b between two adjacent insertion holes 6 may be 0, that is, the two insertion holes 6 may be in contact with each other. Therefore, when the fire protection device of the present invention is used, a plurality of synthetic resin pipes can be arranged in parallel on the fire protection partition wall at extremely short intervals.

Thickness of heat-expandable fireproof material ( e in FIG. 1)
Is preferably 1/2 or more of the diameter of the insertion hole 6.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a fire protector for a through hole according to the present invention.

FIG. 2 is a diagram for explaining the dimensions of each member in the cross section of the fire preventive for through holes of the present invention.

FIG. 3 is a view showing a state in which the fire preventive device for a through hole of the present invention is attached to a fire preventive compartment.

FIG. 4 shows a cross section of a fire protection device in which a tubular body 4 has an oval shape.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Fire protection tool for through hole 2 ... Fire protection partition wall 3 ... Synthetic resin tube 4 ... Metal rectangular tubular body 5 ... Thermally expandable fire protection material 6 ... Insertion hole

Claims (3)

[Claims] 1. A fire protector for a through hole, which is fitted into a through hole provided in a fireproof partition wall and a floor, and through which a plurality of synthetic resin pipes are inserted, wherein the rectangular or oval shape is fitted into the through hole. A fire-extinguishing tool for through-holes, wherein a heat-expandable fireproof material having a plurality of insertion holes is arranged inside a tubular body. 2. The fire protector for a through hole according to claim 1, wherein the prismatic or oval tubular body and the heat-expandable fireproof material are divided into two parts by a plane passing through the center lines of the plurality of insertion holes. . 3. The thickness of the thinnest portion of the heat-expandable fireproof material is 1/4 or more of the diameter of the insertion hole, and the distance between adjacent insertion holes is less than 1/2 of the diameter of the insertion hole. is there,
The fire prevention device for a through hole according to claim 1 or 2.