JP2020117965A - Fireproof member and fireproof structure - Google Patents

Abstract

To further improve the effect of suppressing the spread of fire by enhancing the sealing effect of a heat-expandable member.SOLUTION: A fireproof member 1 includes heat-expandable members 2A and 2B which are arranged at a distance from each other between the inner peripheral surface of a through hole 101 of a partition portion 100 and an outer peripheral surface of a pipe 102 and which are expanded by heat during a fire, and a holding member 5 made of an incombustible material which holds the heat-expandable members 2A and 2B.SELECTED DRAWING: Figure 4

Description

The present invention relates to a fireproof member and a fireproof structure provided in a partition having a through hole through which a pipe of a building penetrates.

For example, in the case of a building such as an apartment house, a through hole is provided in the floor and a pipe such as a drainage pipe is arranged in the through hole so that drainage can flow from a room on an upper floor to a lower part. Generally, since the outer diameter of the pipe is smaller than the inner diameter of the through hole, a gap is created between the outer peripheral surface of the pipe and the inner peripheral surface of the through hole. In this gap, for example, fireproof members disclosed in Patent Documents 1 and 2 should be provided to prevent flames from reaching the upper floor room when a fire occurs in the lower floor room. Is being done.

The member of Patent Document 1 has a thickness that allows it to be mounted between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe, and has a length that allows it to be wound along the outer periphery of the pipe. The heat-resistant sealing material and an adhesive tape attached to the side surface of the sealing material are provided. When construction is performed using the member of Patent Document 1, a heat-expandable heat-resistant sealing material is wrapped around the outer peripheral surface of the pipe, and this state is held by an adhesive tape. Since there is a gap between the heat-expandable heat-resistant seal material and the inner peripheral surface of the through hole, a filling material such as mortar or refractory putty is filled in the gap to close the gap.

The member of Patent Document 2 includes a thermal expansion body, a shape maintaining portion that maintains the shape when the thermal expansion body is deformed, and a locking tool. When construction is performed using the member of Patent Document 2, the thermal expansion body is arranged in the through hole and the locking tool is locked at the upper edge portion of the through hole. Then, the caulking material is filled from above into the gap between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe to close the gap.

JP-A-2000-240854 JP, 2017-109069, A

As described above, the thermal expansion member is provided in the gap between the outer peripheral surface of the pipe and the inner peripheral surface of the through hole to prevent the fire from spreading from one room to another. There is a strong demand to further improve the suppression effect.

The present invention has been made in view of the above points, and an object of the present invention is to further enhance the effect of suppressing the spread of fire by enhancing the sealing effect of the thermally expandable member.

In order to achieve the above-mentioned object, a first aspect of the present invention is arranged between an inner peripheral surface of a through hole formed in a partition of a building and an outer peripheral surface of a pipe inserted into the through hole, and at the time of a fire. In the fire-resistant member for suppressing the spread of flame through the through-hole, the inner peripheral surface of the through-hole and the outer peripheral surface of the pipe are arranged at intervals in the center line direction of the through-hole, in the event of a fire. It is characterized by comprising a plurality of heat-expandable members that expand by heat and a holding member made of an incombustible material that holds the plurality of heat-expandable members.

According to this configuration, since the plurality of heat-expandable members are arranged at intervals in the center line direction of the through hole of the partition section, a gap is formed between these heat-expandable members. Become. For example, when a fire occurs in one of the rooms partitioned by the partition section, the heat of the fire expands the thermally expandable member located on the side of the one room. At this time, since a gap is formed between the heat-expandable member located on the other room side, it becomes difficult to transfer the heat of one room to the heat-expandable member on the other room side. Further, the expanding heat-expanding member is guided into the through-hole, the heat-expanding member expands inside the through-hole, the through-hole is closed by the heat-expanding member, and fire spread through the through-hole is suppressed. .. Similarly, when a fire occurs in the other room, the spread of fire to the other room is suppressed.

A second aspect of the present invention is a fire-resistant member that is provided in a partition of a building in which a through hole is formed, and that suppresses the spread of fire through the through hole in the event of a fire. A plurality of heat-expandable members that are arranged at intervals in the direction of the center line of the through-holes and expand by heat during a fire, and a holding member made of a noncombustible material that holds the plurality of heat-expandable members. It is characterized by having.

According to this configuration, the plurality of heat-expandable members project from the through hole on both sides in the centerline direction while being separated from each other. For example, when a fire occurs in one of the rooms partitioned by the partition section, the heat of the fire expands the thermally expandable member located on the side of the one room. Since this heat-expandable member is held by the holding member, the heat-expandable member does not drop and expands toward the through hole, and the through-hole is closed by the heat expandable member. This suppresses the spread of fire through the through holes. Similarly, when a fire occurs in the other room, the spread of fire to the other room is suppressed.

A third aspect of the invention is characterized by including a seal member made of an elastic material and arranged between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe inserted into the through hole.

According to this configuration, the seal material seals between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe. Therefore, the work of filling the irregular filling material between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe becomes unnecessary, and the workability at the site is improved and the construction time is shortened. Further, by disposing the sealing material between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe, it is possible to adjust the pipe so as to come to the center of the through hole without being eccentric.

A fourth invention is characterized by comprising a heat insulating material arranged between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe inserted into the through hole.

According to this configuration, for example, when a fire occurs in one room, the heat in one room is less likely to be transferred to the other room by the heat insulating material, so that the effect of suppressing the spread of fire is further enhanced.

A fifth aspect of the invention is characterized in that the thermal expansion member is provided between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe inserted into the through hole.

According to this configuration, the thermally expandable member expands inside the through hole and the through hole is closed by the thermally expandable member, so that the effect of suppressing the spread of fire is further enhanced.

A sixth aspect of the present invention is the thermal expansive member arranged between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe, and the thermal expansive member protruding from the through hole to both sides in the center line direction. The members are arranged so as to be spaced apart from each other in the center line direction of the through hole.

According to this configuration, since a gap is formed between the plurality of thermally expansive members that are arranged adjacent to each other, for example, when a fire occurs in one room, the heat is generated in the other room side. It becomes difficult to transfer to the thermally expansive member. It also becomes possible to secure a space in which the heat-expandable member expands.

A seventh invention is characterized in that the holding member is a mesh member.

An eighth invention is characterized by comprising a film-shaped or foil-shaped non-combustible member that covers the heat-expandable member.

According to this configuration, by covering the heat-expandable member with the non-combustible member, it becomes difficult for the heat-expandable member to partially drop when the heat-expandable member expands. Further, since the noncombustible member is a film or foil and is thin, it does not hinder the expansion of the heat-expandable member.

A ninth aspect of the invention is characterized in that the refractory member has flexibility to be deformed into a shape along the outer peripheral surface of the pipe inserted into the through hole.

According to this configuration, the shape of the refractory member can be easily made into a shape along the outer peripheral surface of the pipe.

A tenth aspect of the invention is to provide a plurality of thermal expansive properties that expand due to heat during a fire between an inner peripheral surface of a through hole formed in a partition of a building and an outer peripheral surface of a pipe inserted into the through hole. The fireproof structure is characterized in that the members are arranged at intervals in the direction of the center line of the through hole, and the plurality of the heat-expandable members are held by holding members made of an incombustible material.

An eleventh invention is arranged such that a plurality of heat-expandable members are spaced apart from each other in the center line direction of the through hole in a state of protruding from the through hole formed in the partition of the building to both sides in the center line direction. And a plurality of the heat-expandable members are held by a holding member made of an incombustible material.

According to the first and tenth aspects, the plurality of heat-expandable members held by the holding member are spaced from each other in the center line direction of the through hole between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe. Since the heat-expandable member that expands in the event of a fire can be guided into the through hole and expanded inside the through hole, heat transfer can be suppressed. As a result, the sealing effect of the heat-expandable member can be enhanced, so that the effect of suppressing the spread of fire can be further improved.

According to the second and eleventh inventions, since the plurality of heat-expandable members held by the holding member are projected from both sides of the through hole, respectively, the heat-expandable members that expand in a fire do not drop. The through hole can be closed by guiding it toward the through hole. As a result, the sealing effect of the heat-expandable member can be enhanced, so that the effect of suppressing the spread of fire can be further improved.

According to the third aspect of the present invention, since the outer peripheral surface of the pipe and the inner peripheral surface of the through hole can be sealed by the sealing material, the construction workability at the site can be improved and the construction time can be improved. Can be shortened.

According to the fourth invention, by disposing the heat insulating material between the outer peripheral surface of the pipe and the inner peripheral surface of the through hole, the effect of suppressing the spread of fire can be further enhanced, and the smoke shielding performance can also be obtained. You can

According to the fifth aspect, by disposing the thermally expandable member also between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe, the sealing effect of the thermally expandable member can be further enhanced.

According to the sixth invention, a gap is formed between the thermally expandable member arranged between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe and the thermally expandable member protruding from the through hole. The effect of suppressing the spread of fire can be further improved.

According to the seventh invention, since the holding member is a net-like member, the heat-expandable member can be held without impeding expansion during a fire, while having a simple and inexpensive structure.

According to the eighth invention, since the film-shaped or foil-shaped noncombustible member that covers the heat-expandable member is provided, a partial expansion of the heat-expandable member is prevented without hindering expansion of the heat-expandable member during a fire. It can be prevented from falling.

According to the ninth aspect, since it becomes easy to form the shape of the fireproof member along the outer peripheral surface of the pipe, it is possible to further improve the workability on the site.

It is the figure which looked at the fire-resistant member concerning Embodiment 1 from the outer peripheral side. It is the figure which looked at the fire-resistant member concerning Embodiment 1 from the inner circumference side. FIG. 3 is an end view of the fireproof member according to the first embodiment. It is a longitudinal cross-sectional view of the fire resistant structure according to the first embodiment. FIG. 8 is a view corresponding to FIG. 1 according to the second embodiment. FIG. 6 is a diagram corresponding to FIG. 2 according to the second embodiment. FIG. 6 is a view corresponding to FIG. 3 according to the second embodiment. FIG. 6 is a view corresponding to FIG. 4 according to the second embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the following description of the preferred embodiments is merely an example in essence, and is not intended to limit the present invention, its application, or its use.

(Embodiment 1)
1 to 3 show a fire resistant member 1 according to Embodiment 1 of the present invention, and FIG. 4 shows a fire resistant structure A according to Embodiment 1 of the present invention. As shown in FIG. 4, the refractory member 1 is provided between an inner peripheral surface 101a of a through hole 101 formed in a partition 100 of a building and an outer peripheral surface 102a of a pipe 102 inserted into the through hole 101. It is a member arranged and used. By disposing the fireproof member 1 between the inner peripheral surface 101a of the through hole 101 and the outer peripheral surface 102a of the pipe 102, it is possible to suppress the spread of fire through the through hole 101 during a fire. In this embodiment, a case where the building is an apartment house will be described, but the building may be other than the apartment house, and may be a detached house having at least two rooms on the same floor, an office, a factory, a store, or the like. It may be. Further, the partition part 100 may be, for example, a wall having fire resistance such as reinforced gypsum board or ALC ((lightweight cellular concrete)), but is not limited to this and may be a floor. The example shown in FIG. 4 is an example in which the partition portion 100 is composed of two reinforced gypsum boards, and the thickness of one reinforced gypsum board is about 21 mm.

The partition portion 100 extends vertically, and the left side of the partition portion 100 in FIG. 4 is the one room R1 and the right side of the partition portion 100 in FIG. 4 is the other room R2. Therefore, one room R1 and the other room R2 are partitioned by the partition section 100. A through hole 101 that penetrates horizontally in a predetermined portion of the partition portion 100 is formed. One room R1 and the other room R2 can communicate with each other through the through hole 101. The through hole 101 has a substantially circular cross section.

The pipe 102 may be, for example, a drain pipe, but is not limited to this. The pipe 102 extends substantially horizontally from one room R1 to the other room R2 while being inserted into the through hole 101. The pipe 102 has a multiple structure including, for example, a vinyl chloride pipe 103, a non-woven fabric 104 provided so as to cover the outer peripheral face of the pipe 103, and a rubber sheet 105 provided so as to cover the outer peripheral face of the non-woven fabric 104. It is possible, but not limited to this. The pipe 102 can be made of resin. When it is made of resin, it may be reduced in diameter or burned down due to the heat of a fire, but as described later, the thermally expandable member 2 expands inside the through hole 101 to close the through hole 101. And the spread of fire to the upper floors is suppressed.

The outer diameter of the pipe 102 is set smaller than the inner diameter of the through hole 101. Therefore, a predetermined distance is provided between the inner peripheral surface 101a of the through hole 101 and the outer peripheral surface 102a of the pipe 102. A gap will be formed. The fireproof structure A of the present invention can be configured by installing the fireproof member 1 so as to close the gap.

In the description of this embodiment, the side of the refractory member 1 that is on the pipe 102 side in the state where the refractory structure A is configured is referred to as the “inner peripheral side”, and the opposite side, that is, the through hole 101 side of the refractory member 1 is referred to as “the inner peripheral side”. "Outer peripheral side".

(Structure of fireproof member 1)
The refractory member 1 is disposed between the inner peripheral surface 101a of the through hole 101 and the outer peripheral surface 102a of the pipe 102, and has a first heat-expandable member 2A and a second heat-expandable member 2B that expand due to heat during a fire. , A first outer peripheral side seal material 3A and a first inner peripheral side seal material 4A, a second outer peripheral side seal material 3B and a second inner peripheral side seal material 4B, a holding member 5, and a film-shaped incombustible member 6. ing.

The first heat-expandable member 2A and the second heat-expandable member 2B may be any heat-expandable member used in a building, and the kind thereof is not particularly limited, but a member that expands due to heat at the time of fire should be mentioned. You can For example, a compound of expanded graphite and boric acid can be used as the first thermally expandable member 2A and the second thermally expandable member 2B. As the expanded graphite, one that expands 100 times or more when heated by a flame can be used.

The properties of the first heat-expandable member 2A and the second heat-expandable member 2B are not particularly limited, but, for example, putty-like, paste-like, and other properties that do not droop over a long period of time. can do. It is preferable that the first heat-expandable member 2A and the second heat-expandable member 2B be formed into a tape shape having a thickness of several mm, and can be bent when an external force is applied. It is preferable to have a property.

The first heat-expandable member 2A and the second heat-expandable member 2B having such properties can be obtained, for example, by mixing soft rubber or a thermoplastic elastomer with expanded graphite, borax, a plasticizer, or the like. it can. Examples of the rubber include natural rubber, isoprene rubber, butadiene rubber, acrylic rubber and the like. Examples of thermoplastic elastomers include styrene-based thermoplastic elastomers and olefin-based thermoplastic elastomers. Further, as the first heat-expandable member 2A and the second heat-expandable member 2B, for example, a butyl rubber sealing material having a thickness of 2 to 8 mm (preferably 4 mm) and containing expanded graphite is preferable.

The first heat-expandable member 2A and the second heat-expandable member 2B are arranged at intervals in the center line direction of the through hole 101 between the inner peripheral surface 101a of the through hole 101 and the outer peripheral surface 102a of the pipe 102. In addition, the through holes 101 are arranged so as to continuously extend in the circumferential direction along the inner peripheral surface 101a.

The first heat-expandable member 2A has a portion arranged on the side of one room R1 in the through hole 101, and a portion arranged in this through hole 101 and the one room R1. It also has a portion protruding from the through hole 101. It continues from the part arranged in the through hole 101 to the part protruding toward the one room R1. The second heat-expandable member 2B has a portion arranged in the through hole 101 on the side of the other room R2, and a portion arranged in the through hole 101 and the other room R2. It also has a portion protruding from the through hole 101. It continues from the part arranged in the through hole 101 to the part protruding toward the other room R2.

The length of the portion of the first heat-expandable member 2A and the second heat-expandable member 2B arranged in the through hole 101 (the size of the through hole 101 in the direction of the center line) can be set to 10 mm or more and 30 mm or less. .. In addition, the length of the portion of the first heat-expandable member 2A and the second heat-expandable member 2B that protrudes from the through hole 101 (the dimension in the center line direction of the through hole 101) is set to, for example, 30 mm or more and 50 mm or less. You can The distance between the first heat-expandable member 2A and the second heat-expandable member 2B is preferably, for example, equal to or larger than the thickness of the heat-expandable members 2A and 2B, and in this example, 4 mm or more. Is. The distance between the first heat-expandable member 2A and the second heat-expandable member 2B can be about 10 mm, and the upper limit dimension can be 20 mm. When the distance between the first heat-expandable member 2A and the second heat-expandable member 2B is equal to or more than the thickness of the heat-expandable members 2A and 2B, for example, when a fire occurs in one room R1. Moreover, it becomes difficult for the heat to be transferred to the second heat-expandable member 2B.

As shown in FIGS. 1 and 2, the holding member 5 is a member that has a plurality of openings 5a and holds the first thermally expandable member 2A and the second thermally expandable member 2B. The holding member 5 may be a mesh member made of an incombustible material, specifically, a wire mesh (lath wire mesh) or the like, but in addition to this, a member having a plurality of openings formed in a plate material and a wire are knitted. It can be configured with a member or the like.

The holding member 5 can be arranged on the inner peripheral side of the first thermally expandable member 2A and the second thermally expandable member 2B. A part of the holding member 5 is embedded in the first heat-expandable member 2A and the second heat-expandable member 2B, so that the first heat-expandable member 2A and the second heat-expandable member 2B are fixed to the holding member 5. It will be. As a result, the first heat-expandable member 2A and the second heat-expandable member 2 can be maintained with a predetermined gap. The holding member 5 is formed so as to extend over the entire thermally expandable members 2A and 2B. Further, the portion of the holding member 5 between the first heat-expandable member 2A and the second heat-expandable member 2B is exposed from the heat-expandable members 2A and 2B.

The holding member 5 is provided with a locking portion 5b projecting to the outer peripheral side of the fireproof member 1. The locking portion 5b is formed by bending a part of the holding member 5 toward the outer peripheral side, and is integrated with the main body portion of the holding member 5. When the fireproof member 1 is installed, the locking portion 5b is engaged with the peripheral portion of the through hole 101 from the outside to suppress the displacement of the fireproof member 1. The locking portion 5b can also be used as a fixing portion for fixing the refractory member 1 to the partition portion 100.

As the holding member 5, for example, a wire net made of galvanized steel wire of 0.20 to 1.0 kg/m ² (preferably 0.5 kg/m ² ) can be mentioned. Further, the end portion of the holding member 5 is bent to prevent the worker from being injured.

The first outer peripheral side sealing material 3A and the first inner peripheral side sealing material 4A are fixed to the first heat-expandable member 2A, and the second outer peripheral side sealing material 3B and the second inner peripheral side sealing material 4B are the second thermal expansion member. It is fixed to the expansive member 2B. 3 A of 1st outer peripheral side sealing materials are adhere|attached on the part arrange|positioned in the through-hole 101 in the outer peripheral side of 2 A of 1st thermal expansion members. 4 A of 1st inner peripheral side sealing materials are adhere|attached on the part arrange|positioned in the through-hole 101 in the inner peripheral side of the 1st thermal expansion member 2A. Therefore, the first outer peripheral sealing material 3A and the first inner peripheral sealing material 4A are arranged between the inner peripheral surface 101a of the through hole 101 and the outer peripheral surface 102a of the pipe 102. Further, the second outer peripheral sealing material 3B is adhered to a portion arranged in the through hole 101 on the outer peripheral side of the second thermal expansion member 2B. The second inner peripheral side sealing material 4B is adhered to a portion arranged inside the through hole 101 on the inner peripheral side of the second thermal expandable member 2B. Therefore, the second outer peripheral sealing material 3B and the second inner peripheral sealing material 4B are arranged between the inner peripheral surface 101a of the through hole 101 and the outer peripheral surface 102a of the pipe 102.

The first outer peripheral sealing material 3A, the first inner peripheral sealing material 4A, the second outer peripheral sealing material 3B and the second inner peripheral sealing material 4B are the inner peripheral surface 101a of the through hole 101 and the outer peripheral surface 102a of the pipe 102. It is a member made of an elastic material for covering the gap between and to ensure airtightness. As the sealing materials 3A, 3B, 4A, and 4B, for example, a foam material (sponge) made of rubber can be used. When a foam material is used, it is preferably made of rubber. Further, the sealing materials 3A, 3B, 4A, and 4B can be fixed to the holding member 5 with, for example, an airtight adhesive tape or the like. The sealing materials 3A, 3B, 4A, 4B and the holding member 5 may be brought into close contact with each other so that no gap is formed between the sealing materials 3A, 3B, 4A, 4B and the holding member 5. This can prevent smoke or the like from entering a different room through the through hole 101 during a fire.

The cross-sectional shape of the sealing materials 3A, 3B, 4A, and 4B can be substantially rectangular, but is not limited to this. Further, the thicknesses of the first outer peripheral side seal material 3A and the second outer peripheral side seal material 3B can be made approximately the same as the thicknesses of the first inner peripheral side seal material 4A and the second inner peripheral side seal material 4B. One may be thicker than the other. The total size of the thicknesses of the first outer peripheral side sealing material 3A and the second outer peripheral side sealing material 3B and the thicknesses of the first inner peripheral side sealing material 4A and the second inner peripheral side sealing material 4B is within the through hole 101. It is set longer than the size of the gap between the peripheral surface 101a and the peripheral surface 102a of the pipe 102. Accordingly, when the sealing materials 3A, 3B, 4A, and 4B are arranged between the inner peripheral surface 101a of the through hole 101 and the outer peripheral surface 102a of the pipe 102, they can be compressed and elastically deformed.

Sealant 3A, 3B, 4A, as 4B, for example, be mentioned EPDM sponge, CR sponge, urethane sponge sponges density ^{0.02~0.10g / cm 3 (0.06g / cm} 3 are preferred) However, the elastic material is not limited thereto, and any elastic material capable of exhibiting a sealing property may be used.

Heat insulation provided between the inner peripheral surface 101a of the through hole 101 and the outer peripheral surface 102a of the pipe 102 in place of the seal materials 3A, 3B, 4A, 4B, or in addition to the seal materials 3A, 3B, 4A, 4B. Material may be provided. As the heat insulating material, for example, glass wool or rock wool can be used.

The film-shaped incombustible member 6 is a member that covers the first heat-expandable member 2A and the second heat-expandable member 2B, and is made of, for example, a non-combustible aluminum tape or the like having an adhesive layer provided on a base material having an aluminum foil. However, the present invention is not limited to this, and a film-shaped non-combustible member in which an adhesive layer or an adhesive layer is provided on a thin metal material, a foil-shaped non-combustible member, or the like can be used. The film-shaped incombustible member 6 may be provided as needed.

The film-shaped incombustible member 6 that covers the first heat-expandable member 2A is continuous from the inner peripheral side surface to the outer peripheral side surface of the first heat-expandable member 2A, and the first outer peripheral side of the first heat-expandable member 2A. It extends to the vicinity of the sealing material 3A. The film-shaped incombustible member 6 covering the second heat-expandable member 2B is continuous from the inner peripheral side surface to the outer peripheral side surface of the second heat-expandable member 2B, and the second outer peripheral side of the second heat-expandable member 2B. It extends to the vicinity of the sealing material 3B. The number of film-shaped incombustible members 6 may be two, or may be one. Examples of the film-shaped non-combustible member 6 include aluminum foil and copper foil having a thickness of 50 to 500 μm (preferably 200 μm).

As described above, each member constituting the refractory member 1 can be easily deformed when a general worker applies a force by hand, so that the refractory member 1 has the outer peripheral surface 102 a of the pipe 102. It has the flexibility to be transformed into a shape that follows.

Moreover, the outer peripheral surface 102a of the pipe 102 may be covered with one fire-resistant member 1 over the entire circumference, or the plurality of fire-resistant members 1 arranged along the outer peripheral surface 102a of the pipe 102. May be provided. For example, the fire-resistant member 1 is arranged over the entire circumference of the outer peripheral surface 102a of the pipe 102 by combining two fire-resistant members 1 having a length that is 1/2 the circumference of the outer peripheral surface 102a of the pipe 102. You can It is also possible to combine three or more refractory members 1.

(Procedure for constructing fire-resistant member 1)
Next, the construction procedure of the fire resistant member 1 configured as described above will be described. A method of installing the refractory member 1 after the pipe 102 is inserted into the through hole 101 is called post-construction. Although post-installation will be described in the following description, the present invention is not limited to post-installation, but the fire-resistant member 1 is fixed inside the through hole 101 before the pipe 102 is inserted, and then the pipe 102 is attached to the through hole 101. It can also be used for a construction method that is inserted.

First, the refractory member 1 is deformed into a shape along the outer peripheral surface 102a of the pipe 102. At this time, it is also possible to use two refractory members 1, and in this case, one refractory member 1 has a shape close to a half arc after being deformed.

After that, the refractory member 1 is inserted between the inner peripheral surface 101a of the through hole 101 and the outer peripheral surface 102a of the pipe 102, and the outer peripheral side seal materials 3A, 3B and the inner peripheral side seal materials 4A, 4B are inserted into the through hole 101. It is pushed between the inner peripheral surface 101a and the outer peripheral surface 102a of the pipe 102. The outer peripheral side seal materials 3A and 3B and the inner peripheral side seal materials 4A and 4B arranged between the inner peripheral surface 101a of the through hole 101 and the outer peripheral surface 102a of the pipe 102 are elastically deformed and compressed. Therefore, the inner peripheral surface 101a of the through hole 101 and the outer peripheral surface 102a of the pipe 102 are in close contact with each other over the entire circumference to cover the gap. At this time, the locking portion 5b of the holding member 5 is located at the peripheral edge of the through hole 101. The refractory member 1 can be positioned by engaging the locking portion 5b with the peripheral portion of the through hole 101.

As described above, between the inner peripheral surface 101a of the through hole 101 formed in the partition 100 of the building and the outer peripheral surface 102a of the pipe 102, the thermally expansive members 2A, 2B and the sealing materials 3A, 3B, 4A are provided. The fireproof structure A in which 4B and 4B are arranged can be configured. As described above, the workability is good because the work can be performed simply by inserting it from the one room R1. It should be noted that the construction can be performed from the other room R2.
(Operation and effect of the embodiment)
As described above, according to this embodiment, the first heat-expandable member 2A and the second heat-expandable member 2B are arranged at intervals in the center line direction of the through hole 101 of the partition portion 100. Therefore, a gap can be formed between the first thermally expandable member 2A and the second thermally expandable member 2B. For example, when a fire occurs in the one room R1 partitioned by the partition section 100, the heat of the fire expands the first thermally expandable member 2A located on the one room R1 side. At this time, since there is a gap between the other room R2 and the second thermally expandable member 2B, the heat of one room R1 is the second thermally expandable member on the other room R2 side. It becomes difficult to transmit to 2B. In addition, the expanding first heat-expandable member 2A is guided into the through-hole 101, the first heat-expandable member 2A expands inside the through-hole 101, and the first heat-expandable member 2A closes the through-hole 101. Therefore, the spread of fire through the through hole 101 is suppressed. Similarly, when a fire occurs in the other room R2, the spread of fire to the one room R1 is suppressed. Further, it is possible to obtain smoke shielding performance.

Moreover, since the outer peripheral surface 102a of the pipe 102 and the inner peripheral surface 101a of the through hole 101 can be sealed by the sealing materials 3A, 3B, 4A, and 4B, the workability at the site can be improved. It is possible to shorten the construction time.

(Embodiment 2)
5 to 7 show a fire resistant member 1 according to Embodiment 2 of the present invention, and FIG. 8 shows a fire resistant structure A according to Embodiment 2 of the present invention. In the second embodiment, the structure of the partition section 100 and the arrangement of the thermally expansive members are different from those of the first embodiment. Hereinafter, the same parts as those of the first embodiment will be denoted by the same reference numerals and the description thereof will be omitted, and the parts different from the first embodiment will be described in detail.

The partition 100 of the second embodiment is a wall made of ALC, and is thicker than the partition 100 of the first embodiment, and has a thickness of about 75 mm.

The fire-resistant member 1 of Embodiment 2 is a member that is provided in a partition 100 of a building in which a through hole 101 is formed and that suppresses fire spread through the through hole 101 during a fire. While being provided with a first heat-expanding member 2C and a second heat-expanding member 2D that are arranged at intervals in the center line direction of the through-hole 101 in a state of protruding on both sides of, and that are expanded by heat during a fire, The holding member 5 (shown in FIG. 8) made of an incombustible material that holds the first thermally expandable member 2C and the second thermally expandable member 2D is provided. Further, the third thermal expansion member 2E and the fourth thermal expansion member 2F arranged between the inner peripheral surface 101a of the through hole 101 and the outer peripheral surface 102a of the pipe 102 are also provided.

That is, the first thermally expandable member 2C projects from the through hole 101 toward the one room R1 side, and the second thermally expandable member 2D projects from the through hole 101 toward the other room R1 side. The third thermal expansion member 2E is provided on the inner peripheral side between the first thermal expansion member 2C and the second thermal expansion member 2D, and the fourth thermal expansion member 2F has the first thermal expansion property. It is provided on the outer peripheral side between the member 2C and the second thermally expandable member 2D. The third heat-expandable member 2E and the fourth heat-expandable member 2F are held by the holding member 5. The first heat-expandable member 2C and the third heat-expandable member 2E and the fourth heat-expandable member 2F are arranged with a space in the center line direction of the through hole 101, and the second heat-expandable member 2D. Also, both the third heat-expandable member 2E and the fourth heat-expandable member 2F are arranged at intervals in the center line direction of the through hole 101.

The first outer peripheral side sealing material 3A and the first inner peripheral side sealing material 4A are provided on the holding member 5 between the first thermally expandable member 2C and the third thermally expandable member 2E and the fourth thermally expandable member 2F. It is fixed. Further, the second outer peripheral side seal material 3B and the second inner peripheral side seal material 4B are holding members between the second thermal expandable member 2D and the third thermal expandable member 2E and the fourth thermal expandable member 2F. It is fixed at 5.

As shown in FIG. 8, by attaching this fire resistant member 1 to the partition 100 of the building, the heat-expandable members 2C and 2D are provided on both sides in the center line direction from the through-hole 101 formed in the partition 100 of the building. It is possible to obtain the refractory structure A in which the heat-expandable members 2C and 2D are held by the holding members 5 made of an incombustible material, the heat-expandable members 2C and 2D being spaced apart from each other in the direction of the center line of the through hole 101 in a protruding state.

According to the second embodiment, the first heat-expandable member 2C and the second heat-expandable member 2D project from the through hole 101 on both sides in the center line direction in a state of being separated from each other. For example, when a fire occurs in one room R1 partitioned by the partition section 100, the heat of the fire expands the first thermally expandable member 2C located on the side of the one room R1. Since the first heat-expandable member 2C is held by the holding member 5, the first heat-expandable member 2C does not drop and expands toward the through hole 101 so that the through hole 101 has the first heat expansion. It is closed by the elastic member 2C. Thereby, the spread of fire through the through hole 101 is suppressed. Similarly, when a fire occurs in the other room R2, the spread of fire to the one room R1 is suppressed. Further, heat transfer between the first heat-expandable member 2C and the third heat-expandable member 2E and the fourth heat-expandable member 2F is suppressed, and the second heat-expandable member 2D and the third heat-expandable member are also provided. Heat transfer between the expansive member 2E and the fourth thermal expansive member 2F can also be suppressed.

The above-described embodiments are merely examples in all respects, and should not be construed as limiting. Further, all modifications and changes belonging to the equivalent range of the claims are within the scope of the present invention.

For example, the locking portion 5b of the fireproof member 1 can be fixed to the gypsum board or the like by a fixing means such as a tucker (for example, a stapler). The fixing means is not limited to the tucker, and a member that can be inserted or screwed into the member forming the partition 100 can be used. Further, the locking portion 5b can be fixed not only to the gypsum board but also to ALC (lightweight cellular concrete) or the like by the fixing means. By fixing the locking portion 5b, the displacement of the fireproof member 1 due to the movement of the pipe 102, an earthquake, or other vibrations can be suppressed, and desired fireproof performance can be exhibited. Further, in Embodiment 1, the locking portion 5b of the fireproof member 1 can be fixed to the partition portion 100 by a fixing means. The refractory member 1 can also be configured to have a fixing means. Further, the fireproof structure A can be configured to include a fixing means.

As explained above, the present invention can be used for a building partition such as a floor or a wall.

DESCRIPTION OF SYMBOLS 1 Refractory member 2A, 2B Thermally expandable member 3A, 3B Outer peripheral side seal material 4A, 4B Inner peripheral side seal material 5 Holding member 6 Film-like noncombustible member 100 Partition part 101 Through hole 101a Inner peripheral surface 102 Pipe 102a Outer peripheral surface

Claims (11)

In a fire-resistant member that is arranged between the inner peripheral surface of the through hole formed in the partition of the building and the outer peripheral surface of the pipe inserted into the through hole, and that suppresses the spread of fire through the through hole during a fire,
Between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe are arranged at a distance from each other in the center line direction of the through hole, a plurality of thermally expandable members that expand by the heat of a fire,
And a holding member made of a non-combustible material for holding a plurality of the heat-expandable members. A refractory member that is provided in a section of a building in which a through hole is formed and that suppresses the spread of fire through the through hole during a fire,
A plurality of heat-expandable members that are arranged at intervals in the center line direction of the through hole in a state of respectively projecting from the through hole on both sides in the center line direction, and that are expanded by heat during a fire,
A holding member made of a non-combustible material for holding a plurality of the heat-expandable members, and a refractory member. The refractory member according to claim 1 or 2,
A refractory member comprising a sealing material made of an elastic material arranged between an inner peripheral surface of the through hole and an outer peripheral surface of a pipe inserted into the through hole. The refractory member according to claim 1 or 2,
A refractory member comprising a heat insulating material arranged between an inner peripheral surface of the through hole and an outer peripheral surface of a pipe inserted into the through hole. The refractory member according to claim 2,
A refractory member comprising a thermally expansive member arranged between an inner peripheral surface of the through hole and an outer peripheral surface of a pipe inserted into the through hole. The refractory member according to claim 5,
The thermal expansion member arranged between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe inserted into the through hole, and the thermal expansion protruding from the through hole to both sides in the center line direction. The fire resistant member is a refractory member that is arranged at intervals in the center line direction of the through hole. The fireproof member according to any one of claims 1 to 6,
The refractory member, wherein the holding member is a mesh member. The fireproof member according to any one of claims 1 to 7,
A fire-resistant member comprising a film-shaped or foil-shaped non-combustible member that covers the heat-expandable member. The refractory member according to any one of claims 1 to 8,
The refractory member is flexible and deforms into a shape along the outer peripheral surface of a pipe inserted through the through hole. Between the inner peripheral surface of the through hole formed in the partition of the building and the outer peripheral surface of the pipe inserted into the through hole, a plurality of thermally expandable members that expand due to heat during a fire A refractory structure characterized in that a plurality of the heat-expandable members are held by a holding member made of an incombustible material, the plurality of the heat-expandable members being arranged at intervals in the centerline direction. The plurality of heat-expandable members are arranged at intervals in the center line direction of the through hole while protruding from the through hole formed in the partition of the building to both sides in the center line direction, A refractory structure in which the expansive member is held by a holding member made of an incombustible material.

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