JP2019052746A - Fire-resistant member and fire-resistant structure - Google Patents

Abstract

To improve construction workability on the site and shorten the construction time by providing a thermally expandable member between the outer peripheral surface of piping and the inner peripheral surface of a through hole.SOLUTION: A fire-resistant member 1 has: a thermally expandable member 2 that is disposed between the inner peripheral surface of a through hole and the outer peripheral surface of piping, and expands by heating at a fire; and a sealant 3, 4 that is fixed to the thermally expandable member 2 and is composed of an elastic material to cover a gap between the inner peripheral surface of the through hole and the outer peripheral surface of the piping.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a fireproof member and a fireproof structure provided in a through hole through which a building pipe passes.

  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 drain pipe is arranged in the through hole so that the drainage can flow downward from the room on the upper floor. In general, since the outer diameter of the pipe is smaller than the inner diameter of the through hole, a gap is formed between the outer peripheral surface of the pipe and the inner peripheral surface of the through hole. In this gap, for example, a fire-resistant member disclosed in each of Patent Documents 1 and 2 is arranged so that when a fire occurs in a lower floor room, the flame does not reach the upper floor room. Has been done.

  The member of Patent Document 1 has a thickness that can be mounted between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe, and has a length that can be wound along the outer periphery of the pipe. A heat-resistant sealing material and an adhesive tape attached to the side surface of the sealing material are provided. When constructing using the member of Patent Document 1, a heat-expandable heat-resistant sealing material is wound around the outer peripheral surface of the pipe, and this state is held with an adhesive tape. Since there is a gap between the heat-expandable heat-resistant sealing material and the inner peripheral surface of the through hole, the gap is filled with a filler such as mortar or fire-resistant putty.

  The member of Patent Document 2 includes a thermal expansion body, a shape maintaining portion that maintains a shape when the thermal expansion body is deformed, and a locking tool. When constructing using the member of this patent document 2, a thermal expansion body is arrange | positioned in a through-hole, and a locking tool is locked to the upper edge part of a through-hole. Thereafter, the gap between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe is filled with caulking material from above to close the gap.

JP 2000-240854 A JP 2017-109069 A

  As described above, by providing a thermally expandable member in the gap between the outer peripheral surface of the pipe and the inner peripheral surface of the through hole, when a fire occurs in a room on the lower floor, the flame reaches the thermally expandable member. Then, the heat-expandable member expands and closes the through hole, and it is possible to suppress the spread of fire to the upper floor.

  However, when constructing the member of Patent Document 1, the gap between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe must be filled with an irregular filler such as mortar or fire-resistant putty. There is a problem that it takes time for construction as well as poor performance. In the case of Patent Document 2, a similar problem may occur because an irregular shaped caulking material must be filled.

  The present invention has been made in view of such points, and the object of the present invention is to perform construction on site when a thermally expandable member is provided between the outer peripheral surface of the pipe and the inner peripheral surface of the through hole. It is to improve workability and shorten the construction time.

  In order to achieve the above object, in the present invention, a sealing material made of an elastic material is fixed to a thermally expandable member, and the gap between the outer peripheral surface of the pipe and the inner peripheral surface of the through hole is closed by this sealing material. I did it.

  1st invention is arrange | positioned between the internal peripheral surface of the through-hole formed in the division part of a building, and the outer peripheral surface of the piping penetrated by this through-hole, and spreads the fire via the said through-hole at the time of a fire In the fire-resistant member to be suppressed, the heat-expandable member is disposed between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe, and is expanded by heat at the time of a fire. A sealing material made of an elastic material that covers a gap between the inner peripheral surface of the hole and the outer peripheral surface of the pipe is provided.

  According to this configuration, by disposing the thermally expandable member between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe, in the event of a fire, the thermally expandable member expands inside the through hole so that the through hole is formed. It is blocked and fire spread through the through hole is suppressed. On the other hand, when the thermally expandable member is disposed between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe, a sealing material made of an elastic material is fixed to the thermally expandable member. A gap between the inner peripheral surface of the hole and the outer peripheral surface of the pipe is covered. 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 as in the past becomes unnecessary, and the construction workability on site is improved and the construction time is reduced. Shorter.

  Further, by arranging the sealing material between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe, the pipe can be adjusted to be centered without being eccentric.

  The second invention is characterized in that, in the first invention, a holding member made of a non-combustible material is provided which has a plurality of openings and holds the thermally expandable member.

  According to this configuration, the thermally expandable member can be disposed at a predetermined position between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe while being held by the holding member. In this state, if the thermally expandable member is to expand due to heat during a fire, since the holding member has a plurality of openings, the holding member does not hinder the expansion of the thermally expandable member.

  According to a third invention, in the second invention, the holding member is a mesh member.

  According to a fourth invention, in the second or third invention, the sealing material is in close contact with the holding member.

  According to this structure, it can suppress that the smoke at the time of a fire penetrates into another room through a through-hole.

  A fifth invention is characterized in that, in any one of the first to fourth inventions, a film-like or foil-like incombustible member that covers a lower portion of the thermally expandable member is provided.

  According to this configuration, by covering the lower portion of the thermally expandable member with the non-combustible member, the thermally expandable member is unlikely to partially drop downward when the thermally expandable member is expanded. Moreover, since the non-combustible member is a thin film or foil, it does not hinder the expansion of the thermally expandable member.

  According to a sixth invention, in any one of the first to fifth inventions, the refractory member has flexibility to be deformed into a shape along an outer peripheral surface of the pipe.

  According to this structure, it becomes easy to make the shape of a fireproof member into the shape along the outer peripheral surface of piping.

  7th invention is equipped with the said several fireproof member arrange | positioned along 6th invention along the outer peripheral surface of the said piping, It is characterized by the above-mentioned.

  The eighth invention is characterized in that the holding member is fixed to the partition part by a fixing means.

  According to this configuration, it is possible to suppress the displacement and dropping of the refractory member due to the movement of the pipe, the earthquake, and other vibrations.

  According to a ninth aspect of the present invention, there is provided a thermally expandable member that expands by 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 through the through hole. A sealing material made of an elastic material that covers a gap between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe is arranged.

  According to the first invention, the sealing material made of an elastic material is fixed to the thermally expandable member, and the gap between the outer peripheral surface of the pipe and the inner peripheral surface of the through hole can be closed by this sealing material. When providing a thermally expansible member between the outer peripheral surface of piping and the inner peripheral surface of a through-hole, while being able to make construction workability | operativity favorable on the spot, construction time can be shortened.

  According to the second invention, since the heat-expandable member is held by the holding member having a plurality of openings, the heat-expandable member is inserted into the through-hole without inhibiting the expansion of the heat-expandable member in the event of a fire. It can arrange | position in the predetermined position of an internal peripheral surface and the outer peripheral surface of piping.

  According to the third aspect of the present invention, since the holding member is a mesh member, the thermally expandable member can be held without hindering expansion during a fire while having a simple and inexpensive configuration.

  According to the fourth invention, since the sealing material is in close contact with the holding member, the effect of blocking smoke and the like during a fire is further enhanced.

  According to the fifth aspect, since the film-like or foil-like incombustible member that covers the lower portion of the thermally expandable member is provided, the portion of the thermally expandable member is not inhibited in the event of a fire without inhibiting the expansion of the thermally expandable member. Fall can be prevented.

  According to the sixth invention, since it becomes easy to make the shape of the refractory member along the outer peripheral surface of the pipe, the construction workability at the site is further improved.

  According to the seventh invention, for example, the thermally expandable member can be disposed between the outer peripheral surface of the pipe and the inner peripheral surface of the through hole in a state where the pipe is inserted into the through hole.

  According to the eighth aspect of the invention, it is possible to suppress the displacement and dropping of the fireproof member due to the movement of the pipe, the earthquake, and other vibrations, and the desired fireproof performance can be exhibited.

It is the figure which looked at the fireproof member which concerns on Embodiment 1 from the inner peripheral side. It is the figure which looked at the refractory member concerning Embodiment 1 from the perimeter side. It is the III-III sectional view taken on the line in FIG. It is the perspective view which looked at the fireproof member of the curved state from upper direction. It is a longitudinal cross-sectional view of a fireproof structure. It is the perspective view which looked at the state where piping was inserted in the penetration hole from the upper part. It is the perspective view which looked at the state which installed the 1st fireproof member from upper direction. It is the perspective view which looked at the state which installed the 2nd fireproof member from the upper part. FIG. 6 is a diagram corresponding to FIG. 5 according to the second embodiment. FIG. 3 is a view corresponding to FIG. 1 according to a second embodiment. FIG. 6 is a diagram corresponding to FIG. 5 according to a second modification of the second embodiment. FIG. 6 is a diagram corresponding to FIG. 5 according to the third embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

(Embodiment 1)
1 to 4 show a refractory member 1 according to Embodiment 1 of the present invention. As shown in FIGS. 5 to 8, the refractory member 1 includes an inner peripheral surface 101 a of a through hole 101 formed in a partition 100 of a building, and an outer peripheral surface 102 a of a pipe 102 inserted through the through hole 101. It is a member arranged and used between. By disposing the refractory 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, the case where the building is an apartment house will be described. However, the building may be other than an apartment house, and may be a detached house having at least two floors, an office, a factory, a store, or the like. . Moreover, although the partition part 100 can mention the floor which has fire resistance, such as an ALC floor, for example, it is not restricted to this.

  The partition part 100 extends horizontally, and a through hole 101 penetrating in a vertical direction is formed in a predetermined portion of the partition part 100. The through hole 101 has a substantially circular cross section. Moreover, although the piping 102 can mention a drain pipe etc., for example, it is not restricted to this. As shown in FIG. 5, the pipe 102 extends substantially vertically from the upper floor room R <b> 1 to the lower floor room R <b> 2 while being inserted into the through hole 101. The pipe 102 can have a double structure, for example, but is not limited thereto. The pipe 102 can be made of resin. If it is made of resin, it may shrink or burn off due to the heat of the fire, but as will be described later, the thermally expandable member 2 expands inside the through hole 2 to close the through hole 2. And the spread of fire to the upper floor is suppressed.

  The outer diameter of the pipe 102 is set to be 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 over the entire circumference. A gap is 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 that becomes the pipe 102 side of the refractory member 1 in the state in which the refractory structure A is configured is referred to as “inner peripheral side”, and the opposite side, that is, the through hole 101 side of the refractory member 1 is “ It is said to be “outer peripheral side”. Further, in the state in which the fireproof structure A is configured, the upper side of the fireproof member 1 is referred to as “upper”, and the lower side of the fireproof member 1 is referred to as “lower”.

(Configuration of refractory 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 expands due to heat at the time of a fire, and the outer peripheral side sealing material 3 and the inner peripheral side A sealing material 4, a holding member 5, a film-like incombustible member 6, and a rubber sealing material 7 are provided. The heat-expandable member 2 may be a heat-expandable member used in a building, and the type is not particularly limited, and examples thereof include a member that expands due to heat at the time of fire. For example, a compound of expanded graphite and boric acid can be used as the thermally expandable member 2. As the expanded graphite, one that expands, for example, 100 times or more when heated with a flame can be used.

  Although the property of the thermally expansible member 2 is not specifically limited, For example, it can be set as the property which does not droop over a long period of time like a putty shape, a paste shape, etc. Preferably, the thermally expandable member 2 is formed into a tape shape with a thickness of several millimeters, and preferably has flexibility that allows it to bend when an external force is applied.

  The thermally expandable member 2 having such properties can be obtained, for example, by mixing expanded graphite, borax, a plasticizer, or the like with a flexible rubber or a thermoplastic elastomer. Examples of the rubber include natural rubber, isobrene rubber, butadiene rubber, and acrylic rubber. Examples of the thermoplastic elastomer include styrene-based thermoplastic elastomers and olefin-based thermoplastic elastomers. Further, as the thermally expandable member 2, for example, a butyl rubber sealing material having a thickness of 2 to 8 mm (preferably 4 mm) and blended with expanded graphite is preferable. The vertical dimension of the thermally expandable member 2 can be made shorter than the vertical dimension of the through hole 101.

  As shown in FIG. 1, the holding member 5 is a member that has a plurality of openings 5 a and holds the thermally expandable member 2. The holding member 5 can be a mesh member made of a non-combustible material, specifically, a wire mesh (lass wire mesh) or the like, but in addition to this, a member having a plurality of openings formed in a plate material, knitted wire It can be constituted by a member or the like.

  The holding member 5 is disposed on the inner peripheral side of the thermally expandable member 2. The holding member 5 is fixed to the thermally expandable member 2 by embedding a part of the holding member 5 in the thermally expandable member 2. The holding member 5 is formed so as to extend from the lower part to the upper part of the thermally expandable member 2 and to both ends of the thermally expandable member 2 in the left-right direction (left-right direction in FIG. 1).

The upper part of the holding member 5 is formed to protrude upward from the upper part of the thermally expandable member 2. And the latching | locking part 5b which protrudes to the outer peripheral side of the fireproof member 1 is provided in the upper part of the holding member 5. As shown in FIG. The locking portion 5 b is formed by bending the upper portion of the holding member 5 toward the outer peripheral side, and is integrated with the main body portion of the holding member 5. The locking portion 5b is for suppressing the fall of the fireproof member 1 by engaging the peripheral portion of the through hole 101 from above when the fireproof member 1 is installed. Examples of the holding member 5 include a wire net made of a galvanized steel wire of 0.20 to 1.0 kg / m ² (preferably 0.5 kg / m ² ). Further, the end portion of the holding member 5 is bent to prevent injury to the operator.

  The outer peripheral side sealing material 3 and the inner peripheral side sealing material 4 are fixed to the thermally expandable member 2 via the holding member 5, and a gap between the inner peripheral surface 101 a of the through hole 101 and the outer peripheral surface 102 a of the pipe 102 is formed. It is a member made of an elastic material for covering and ensuring airtightness. As the outer peripheral side sealing material 3 and the inner peripheral side sealing material 4, for example, a rubber foam (sponge) or the like can be used. When a foam material is used, a rubber material is preferable.

  The outer peripheral side sealing material 3 is fixed to the outer peripheral side surface at the upper part of the holding member 5, and extends across both left and right ends of the holding member 5. The inner peripheral side sealing material 4 is fixed to the inner peripheral side surface at the upper part of the holding member 5, and extends across both left and right ends of the holding member 5. The outer peripheral side sealing material 3 and the inner peripheral side sealing material 4 are fixed to the holding member 5 by, for example, an airtight adhesive tape or the like, and the outer peripheral side sealing material 3, the inner peripheral side sealing material 4 and the holding member 5 are fixed. And are in close contact. Further, there is no gap between the outer peripheral side sealing material 3 and the inner peripheral side sealing material 4 and the holding member 5. Thereby, it can suppress that the smoke etc. at the time of a fire penetrate | invade into another room through the through-hole 101. FIG.

  Although the cross-sectional shape of the outer peripheral side sealing material 3 and the inner peripheral side sealing material 4 can be made into a substantially rectangular shape, it is not restricted to this. Further, as shown in FIG. 3, the inner and outer thicknesses of the outer peripheral side sealing material 3 are set to be thinner than the inner and outer thicknesses of the inner peripheral sealing material 4. This is merely an example, and the inner and outer thicknesses of the outer peripheral side sealing material 3 and the inner and outer thicknesses of the inner peripheral sealing material 4 may be the same, or the inner and outer thicknesses of the outer peripheral sealing material 3 may be the same. The inner circumferential side sealing material 4 may be set thicker than the thickness in the inner and outer directions. The dimension obtained by combining the inner and outer thicknesses of the outer peripheral side sealing material 3 and the inner and outer thicknesses of the inner peripheral side sealing material 4 is based on the dimension of the gap between the inner peripheral surface 101 a of the through hole 101 and the outer peripheral surface 102 a of the pipe 102. Is also set longer. Thereby, when the outer peripheral side sealing material 3 and the inner peripheral side sealing material 4 are arrange | positioned between the inner peripheral surface 101a of the through-hole 101, and the outer peripheral surface 102a of the piping 102, it can compress and elastically deform.

The outer peripheral side sealing member 3, for example, a EPDM sponge, CR sponge, urethane sponge sponges density 0.02~0.10g ^/ cm 3 (preferably 0.06 g / cm ^3). The inner peripheral side sealing material 4 can include sponges similar to the outer peripheral side sealing material 3.

  The film-like incombustible member 6 is a member that covers the lower part of the heat-expandable member 2, and can be composed of, for example, an incombustible aluminum tape or the like in which an adhesive layer is provided on a base material having an aluminum foil. It is not limited, and a film-like incombustible member in which an adhesive layer or an adhesive layer is provided on a thin metal material, a foil-like incombustible member, or the like can be used. The film-like incombustible member 6 may be provided as necessary.

  The film-like incombustible member 6 is attached so as to extend from the outer peripheral side surface of the lower part of the thermally expandable member 2 to the inner peripheral side surface through the lower end surface. Thereby, not only the lower end surface of the thermally expandable member 2 but also the outer peripheral surface and the inner peripheral surface can be covered with the film-like incombustible member 6. Examples of the film-like incombustible member 6 include aluminum foil and copper foil having a thickness of 50 to 500 μm (preferably 200 μm).

  The rubber seal material 7 can be made of, for example, butyl rubber or the like, and is provided above the thermally expandable member 2. The rubber seal material 7 is in contact with the upper end surface of the thermally expandable member 2, extends upward therefrom, and is formed so as to reach the lower end surfaces of the outer peripheral side seal member 3 and the inner peripheral side seal member 4. The rubber seal material 7 is also fixed to the holding member 5. Although the thickness of the rubber sealing material 7 and the thickness of the thermally expandable member 2 can be made the same, one side may be thickened. The rubber seal material 7 is not an essential component and can be omitted. Examples of the rubber sealing material 7 include a butyl rubber sealing material having a thickness of 2 to 8 mm (preferably 4 mm).

  As described above, each member constituting the refractory member 1 can be easily deformed when a general worker applies a force by hand. Therefore, the refractory member 1 has the outer peripheral surface 102a of the pipe 102. (See FIG. 4).

  Moreover, it can also be set as the structure provided with the some refractory member 1 arrange | positioned so that the outer peripheral surface 102a of the piping 102 may be followed. For example, the refractory member 1 is arranged over the entire circumference of the outer peripheral surface 102 a of the pipe 102 by combining two refractory members 1 having a length that is ½ of the peripheral length of the outer peripheral surface 102 a of the pipe 102. Can do. Three or more refractory members 1 can be combined.

(Construction instructions for refractory member 1)
Next, the construction point of the refractory member 1 configured as described above will be described. FIG. 6 shows the state in which the pipe 102 is inserted into the through hole 101 from above, before the refractory member 1 is constructed. A method of installing the refractory member 1 after the pipe 102 is inserted into the through hole 101 is referred to as post-installation. In the following description, post-installation will be described. However, the present invention is not limited to post-installation, and the refractory member 1 is fixed inside the through-hole 101 before the pipe 102 is inserted. It can correspond to the construction method to be inserted.

  First, as shown in FIG. 4, the refractory member 1 is deformed into a shape along the outer peripheral surface 102 a of the pipe 102. In this example, the case where two refractory members 1 are used is shown. Therefore, one refractory member 1 has a shape close to a semicircular arc after deformation.

  Thereafter, as shown in FIG. 7, the refractory member 1 is inserted between the inner peripheral surface 101 a of the through hole 101 and the outer peripheral surface 102 a of the pipe 102 to penetrate the outer peripheral side sealing material 3 and the inner peripheral side sealing material 4. It pushes between the inner peripheral surface 101a of the hole 101 and the outer peripheral surface 102a of the pipe 102. Since the outer peripheral side sealing material 3 and the inner peripheral side sealing material 4 disposed 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, the through hole The inner circumferential surface 101a of 101 and the outer circumferential 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 5 b of the holding member 5 is located at the peripheral edge of the through hole 101.

  After the first refractory member 1 is installed, the second refractory member 1 is installed in the same manner as shown in FIG. In addition, the fireproof member 1 can also be comprised by one, and the fireproof member 1 which has the same length as the perimeter of the outer peripheral surface 102a of the piping 102 should just be prepared in this case.

As described above, the thermally expandable member 2 and the sealing materials 3 and 4 are arranged between the inner peripheral surface 101a of the through hole 101 formed in the partition part 100 of the building and the outer peripheral surface 102a of the pipe 102. The fireproof structure A can be configured.
(Effect of embodiment)
As described above, according to this embodiment, the thermally expandable member 2 is disposed between the inner peripheral surface 101a of the through hole 101 and the outer peripheral surface 102a of the pipe 102, so that in the event of a fire, the thermally expandable member. 2 expands inside the through hole 101 to close the through hole 101, and the fire spread through the through hole 101 is suppressed. On the other hand, when the thermally expandable member 2 is disposed between the inner peripheral surface 101a of the through hole 101 and the outer peripheral surface 102a of the pipe 102, seal members 3 and 4 made of an elastic material are fixed to the thermally expandable member 2. Therefore, the seal material 3, 4 can cover the gap between the inner peripheral surface 101 a of the through hole 101 and the outer peripheral surface 102 a of the pipe 102. Therefore, it is not necessary to fill the space between the inner peripheral surface 101a of the through-hole 101 and the outer peripheral surface 102a of the pipe 102 with an irregular filler as in the prior art, and the construction workability at the site is improved. Construction time is shortened.

  Further, by arranging the sealing materials 3 and 4 between the inner peripheral surface 101a of the through-hole 101 and the outer peripheral surface 102a of the pipe 102, the pipe 102 is adjusted so as to come to the center of the through-hole 101 without being eccentric. can do.

(Embodiment 2)
FIG. 9 is a longitudinal sectional view of the fireproof structure A according to the second embodiment of the present invention. This second embodiment is different from the first embodiment in that the structure of the partition 100 is a hollow floor. Accordingly, as shown in FIG. 10, the point that the fireproof member 1 does not include the rubber seal material is also different from the first embodiment. Hereinafter, the same parts as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and parts different from those in the first embodiment will be described in detail.

  The partition 100 of the second embodiment is a so-called double structure floor. The partition unit 100 includes an upper plate member 110, a lower plate member 111 that is disposed downwardly from the upper plate member 110, and an intermediate member 112 that is formed so as to connect the upper plate member 110 and the lower plate member 111. . Through holes 101 are formed in the upper plate member 110 and the lower plate member 111, respectively. Since the upper plate member 110 and the lower plate member 111 are separated in the vertical direction, the partition 100 is hollow.

  Since the fireproof member 1 of the second embodiment has no rubber seal portion, the dimension in the center line direction (vertical direction) is short. Moreover, the dimension of the center line direction of the thermally expansible member 2 of the fireproof member 1 of Embodiment 2 can be shortened compared with the thing of Embodiment 1. FIG.

  Two refractory members 1 are inserted into the through holes 101 of the upper plate member 110, and two refractory members 1 are also inserted into the through holes 101 of the lower plate member 111. These four refractory members 1 can all be the same. In the event of a fire, the thermally expandable member 2 expands inside the through hole 101 and closes the through hole 101, so that the fire spread through the through hole 101 is suppressed.

  In the case of the second embodiment, the construction workability at the site is improved and the construction time is shortened as in the first embodiment.

  Although not shown, the pipe 102 may be provided with a joint pipe. Even when a joint pipe is provided, it can be installed by inserting the refractory member 1 between the inner peripheral surface 101 a of the through hole 101 and the outer peripheral surface 102 a of the pipe 102.

  Further, the present invention can also be applied to the case where the pipe 102 is bent as in Modification 2 of Embodiment 2 shown in FIG. In this example, the through hole 101 of the upper plate member 110 and the through hole 101 of the lower plate member 111 are separated in the horizontal direction so as to correspond to the bent shape of the pipe 102. Even when the pipe 102 is bent, it can be installed by inserting the refractory member 1 between the inner peripheral surface 101 a of the through hole 101 and the outer peripheral surface 102 a of the pipe 102.

  Further, as disclosed in, for example, Japanese Patent Application Laid-Open No. 2006-234140, there is a construction method that uses a sleeve tube for the penetrating portion of the hollow wall, but in this embodiment, it is bent into an arbitrary shape as shown in FIG. Even the pipe 102 having a shape can be used.

(Embodiment 3)
FIG. 12 is a longitudinal sectional view of the fireproof structure A according to Embodiment 3 of the present invention. In Embodiment 3, the section 100 is a wall (hollow wall), which is different from Embodiments 1 and 2. Is different. Hereinafter, the same parts as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and parts different from those in the first embodiment will be described in detail.

  The partition part 200 includes a first plate part 201 and a second plate part 202 that extend in the vertical direction. The first plate portion 201 and the second plate portion 202 are arranged with a space in the horizontal direction and extend in parallel to each other. A through hole 101 is formed in each of the first plate portion 201 and the second plate portion 202. Since the 1st board part 201 and the 2nd board part 202 are separated in the horizontal direction, the division part 200 becomes hollow shape.

  As in the second embodiment, the fireproof member 1 according to the third embodiment has no rubber seal portion and thus has a short dimension in the center line direction (horizontal direction). Moreover, the dimension of the center line direction of the thermally expansible member 2 of the refractory member 1 can be made shorter than that of the first embodiment.

  The two refractory members 1 are inserted into the through holes 101 of the first plate portion 201, and the two refractory members 1 are also inserted into the through holes 101 of the second plate portion 202. These four refractory members 1 can all be the same. In the event of a fire, the thermally expandable member 2 expands inside the through hole 101 and closes the through hole 101, so that the fire spread through the through hole 101 is suppressed.

  In the case of the third embodiment, the construction workability on site is improved and the construction time is shortened as in the first embodiment.

(Other embodiments)
The above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  Although it does not specifically limit in the hollow floor of Embodiment 2, and the hollow wall of Embodiment 3, a gypsum board can be used as a member. In the case of Embodiment 2 or Embodiment 3, in order to prevent the fire-resistant member 1 from falling off due to vibration such as an earthquake when the fire-resistant member 1 is installed in the opening, the locking portion 5b of the fire-resistant member 1 is made of a tucker (eg, a stapler) or the like. It can be fixed to the gypsum board by fixing means. The fixing means is not limited to the tucker, and a member that can be inserted into or screwed into a member constituting the partition portion can be used. Moreover, not only a gypsum board but the latching | locking part 5b can be fixed by fixing means, for example to ALC (lightweight cellular concrete) etc. By fixing the locking portion 5b, it is possible to suppress displacement and dropping of the fireproof member 1 due to movement of the pipe, earthquake, and other vibrations, and the desired fireproof performance can be exhibited. Moreover, in Embodiment 1, the latching | locking part 5b of the fireproof member 1 can also be fixed to a partition part by a fixing means. The refractory member 1 may be configured to include a fixing means. Moreover, the fireproof structure A can also be provided with a fixing means.

  As described above, the present invention is used by being disposed between the inner peripheral surface of a through hole formed in a partition part of a building such as a floor or a wall and the outer peripheral surface of a pipe inserted through the through hole. can do.

DESCRIPTION OF SYMBOLS 1 Refractory member 2 Thermal expansion member 3 Outer peripheral side sealing material 4 Inner peripheral side sealing material 5 Holding member 6 Film-like incombustible member 7 Rubber sealing material 100 Partition part (floor)
101 Through-hole 101a Inner peripheral surface 102 Piping 102a Outer peripheral surface

Claims (9)

In a fire-resistant member that is disposed between the inner peripheral surface of a through hole formed in a partition of a building and the outer peripheral surface of a pipe inserted through the through hole, and suppresses the spread of fire through the through hole in a fire,
A thermally expandable member that is disposed between the inner peripheral surface of the through hole and the outer peripheral surface of the pipe, and expands by heat during a fire;
A fireproof member, comprising: a sealing material made of an elastic material fixed to the thermally expandable member and covering a gap between an inner peripheral surface of the through hole and an outer peripheral surface of the pipe. The fireproof member according to claim 1,
A fireproof member having a plurality of openings and a holding member made of a noncombustible material for holding the thermally expandable member. In the fireproof member according to claim 2,
The fire-resistant member, wherein the holding member is a mesh member. In the refractory member according to claim 2 or 3,
The fireproof member, wherein the sealing material is in close contact with the holding member. In the refractory member according to any one of claims 1 to 4,
A fireproof member comprising a film-like or foil-like incombustible member covering a lower portion of the thermally expandable member. In the refractory member according to any one of claims 1 to 5,
The refractory member has flexibility to deform into a shape along the outer peripheral surface of the pipe. In the fireproof member according to claim 6,
A fireproof member comprising a plurality of the fireproof members disposed along the outer peripheral surface of the pipe. In the refractory member according to any one of claims 2 to 4,
The refractory member, wherein the holding member is fixed to the partition portion by a fixing means.   A thermally expandable member that expands by heat during a fire between an inner peripheral surface of a through hole formed in a partition of the building and an outer peripheral surface of a pipe inserted through the through hole; A fireproof structure characterized in that a sealing material made of an elastic material that covers a gap between the peripheral surface and the outer peripheral surface of the pipe is disposed.

Images