Construction method for compartment penetration processing structure

Abstract

To provide a section penetration treatment structure, a construction method of the section penetration treatment structure, and a section penetration treatment material that reduce variations in fire resistance and improve work efficiency.SOLUTION: There is provided a section penetration treatment structure having a section penetration portion 15 formed in a partition portion 11 of a building and having a long insertion body 21 inserted therein as a fireproof structure, which includes a sheet-like member 3 that closes at least a part of a gap between the insertion body 21 an opening 13C of the section penetration portion 15 provided in the partition portion 11. Two or three or more through holes 30 are provided on a surface 3A of the sheet-like member 3. The opening 13C is arranged between the two through holes 30. Alternatively, a polygon formed by connecting through holes 31 in which three or more through holes 30 are close to each other surrounds the opening 13C.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a compartment penetration structure formed in a partition section of a building or the like, a compartment penetration material for forming the compartment penetration structure, and a construction method for the compartment penetration structure. [Background technology]

[0002] In buildings such as apartment complexes, office buildings, and schools, compartment penetrations are often installed in partitions such as walls to allow the passage of long objects such as cables and pipes. Compartment penetrations are required to be constructed with fire prevention measures (fire-resistant construction) to prevent the spread of fire to other compartments in the event of a fire in one compartment. Partitions are generally hollow walls, consisting of two walls with a hollow space between them.

[0003] One known method for making compartment penetrations fireproof is to fill the gap between the long insert and the through hole with an unshaped filler such as fireproof putty. When an unshaped filler is used, a tubular member made of fireproof material may also be placed between the inside of the through hole in each wall and the insert (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6150933 [Patent Document 2] Patent No. 6348320 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when unshaped filler is used for fireproofing of compartment penetrations, there is variation among workers, and sufficient fire resistance may not be achieved. Also, when installing fireproofing materials and their accessories within the structure, it is sometimes unclear to what extent they have been installed (quantity, thickness, length, etc.), or it is difficult to determine whether they have been installed according to regulations. Therefore, in order to confirm whether fireproofing materials have been installed according to regulations, it is necessary to destroy the compartment penetration structure and check the internal structure.

[0006] Additionally, to reduce variations among workers, there are kits that integrate predetermined quantities and sizes of components, but these tend to have a large number of components, which can easily lead to components being lost or forgotten to be installed, and there is also the problem of a lot of waste being generated because each kit is packaged separately. Furthermore, the size of the opening in the compartment penetration part through which the insert is inserted is not uniform but varies, so when installing fire-resistant material, etc., the fire-resistant material must be positioned accurately before installation in order to ensure that it is installed at the location of the opening, which poses a problem of reducing work efficiency.

[0007] Therefore, an object of the present invention is to provide a compartment penetration treatment structure, a construction method for a compartment penetration treatment structure, and a compartment penetration treatment material that reduce variation in fire resistance performance and improve work efficiency. [Means for solving the problem]

[0008] The present invention has been made to solve the above problems, and the gist of the present invention is as follows. [1] A compartment penetration structure that is formed in a partition of a building and has a compartment penetration portion through which a long insert is inserted, and has a fire-resistant structure, and is provided with a sheet-like member that blocks at least a part of the gap between the opening of the compartment penetration portion provided in the partition and the insert, and two or more through holes are provided on the surface of the sheet-like member, and the sheet-like member is installed so that the opening is located between the two through holes, or so that the polygon formed by connecting the three or more through holes that are adjacent to each other surrounds the opening. [2] The compartment penetration processing structure described in [1], which is provided with a cover member that covers the sheet-like member. [3] The compartment penetration processing structure described in [2], wherein the cover member covers at least a portion of the gap between the opening and the insert. [4] The compartment penetration structure according to any one of [1] to [3], wherein nothing is provided inside the compartment penetration part other than the insert. [5] The compartment penetration structure according to any one of [1] to [4], wherein the sheet-like member has a fire-resistant material layer. [6] The compartment penetration structure according to any one of [2] to [5], wherein the cover member has a fire-resistant material layer. [7] A compartment penetration processing structure described in any one of [1] to [6], wherein the sheet-like member is fixed to the partition portion by at least one of the adhesive fire-resistant material layer or adhesive layer arranged on the inside and a fixing member installed from the outside. [8] A compartment penetration processing structure described in any of [2] to [7], wherein the cover member is fixed to at least one of the insert and the sheet-like member by at least one of the adhesive fire-resistant material layer or adhesive layer arranged on the inside, a string-like member or adhesive tape wound from the outside, and a fixing member installed from the outside. [9] The compartment penetration structure according to any one of [1] to [8], wherein compartment penetration materials comprising the sheet-like member are provided on both sides of the partition.

[10] A compartment penetration treatment material used to make a compartment penetration formed in a partition of a building and through which a long insert is inserted into a fireproof structure, the compartment penetration treatment material comprising a sheet-like member that blocks at least a part of the gap between the opening of the compartment penetration provided in the partition and the insert, two or more through holes are provided on the surface of the sheet-like member, and the sheet-like member has an area in which the opening can be positioned between the two through holes, or a polygon formed by connecting the three or more through holes that are adjacent to each other can surround the opening.

[11] A construction method for a compartment penetration structure that is formed in a partition of a building and has a compartment penetration portion through which a long insert is inserted, and that has a fire-resistant structure, the construction method for a compartment penetration structure includes a step of installing a sheet-like member so as to block at least a part of the gap between the opening of the compartment penetration portion provided in the partition and the insert, and two or three or more through holes are provided on the surface of the sheet-like member, and the opening is positioned between the two through holes, or the sheet-like member is installed so that the polygon formed by connecting the three or more adjacent through holes surrounds the opening. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a compartment penetration treatment structure, a construction method for a compartment penetration treatment structure, and a compartment penetration treatment material that reduce variation in fire resistance performance and improve work efficiency. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view showing a state before a compartment penetration treatment material is installed in a compartment penetration treatment structure according to a first embodiment of the present invention. FIG. [Figure 2] 1 is a cross-sectional view showing a compartment penetration structure according to a first embodiment of the present invention. [Figure 3] 1 is a schematic plan view showing three or more through holes in a sheet-like member of a compartment penetration structure according to a first embodiment of the present invention. FIG. [Figure 4]1 is a schematic plan view showing two through holes of a sheet-like member of a compartment penetration treatment structure according to a first embodiment of the present invention. FIG. [Figure 5] FIG. 10 is a cross-sectional view showing a compartment penetration structure according to another embodiment of the first embodiment of the present invention. [Figure 6] FIG. 10 is a perspective view showing another form of a cover member in a compartment penetration processing structure according to a modified example of the first embodiment of the present invention. [Figure 7] FIG. 10 is a cross-sectional view showing a compartment penetration structure according to a modified example of the first embodiment of the present invention. [Figure 8] FIG. 10 is a perspective view showing a state before a compartment penetration treatment material is installed in a compartment penetration treatment structure according to a second embodiment of the present invention. [Figure 9] FIG. 4 is a cross-sectional view showing a compartment penetration structure according to a second embodiment of the present invention. [Figure 10] FIG. 10 is a cross-sectional view showing another modified example of the compartment penetration processing structure according to the first embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] The present invention will be described in more detail below using embodiments.

[0012] [First embodiment] The compartment penetration structure according to the first embodiment of the present invention is a compartment penetration structure, as shown in FIG. 1, which is formed in a partition 11 of a building and has a compartment penetration portion 15, through which a long penetrating body 21 is inserted, having a fire-resistant structure.

[0013] The partition 11 in the compartment penetration structure of the present invention is a component that separates compartments (first compartment A and second compartment B) in the wall surface of a building, and has a compartment penetration 15 that penetrates from one outer surface 11A of the partition 11 to the other outer surface 11B. The partition 11 shown in FIG. 1 is a hollow wall and is composed of two wall materials (partition materials) 12A and 12B arranged with a gap (hollow portion 13) between them. Therefore, the compartment penetration 15 is composed of a through hole 13A formed in one wall material 12A, a through hole 13B formed in the other wall material 12B, and the hollow portion 13 between them. The outer surface of one wall material 12A forms the outer surface 11A of the partition 11, and the outer surface of the other wall material 12B forms the outer surface 11B of the partition 11. The through holes 13A and 13B may be, for example, circular, elliptical, or similar shapes. The through holes 13A and 13B on the outer surfaces 11A and 11B respectively constitute openings 13C and 13D of the compartment through-hole 15 provided in the partition 11.

[0014] In this specification, the components that are installed in the compartment penetration section 15 to form the compartment penetration processing structure 10 (in this embodiment, the sheet-like member 3, the cover member 5, and the fixing members for fixing these, etc.) are sometimes collectively referred to as compartment penetration processing materials. In addition, the following describes the configuration of the compartment penetration processing structure on one opening 13C side of the partition section 11, but in this embodiment, the configuration of the compartment penetration processing structure on the other opening 13D side is similar, so the description thereof will be omitted.

[0015] The compartment penetration structure 10 according to the first embodiment comprises a sheet-like member 3 and a cover member 5 as compartment penetration treatment materials, and the sheet-like member 3 has at least a fire-resistant material as described below.

[0016] [Sheet-like member] As shown in FIG. 1 , the sheet-shaped member 3 has a slit 32 through which the inserter 21 is inserted. The slit 32 has a center portion 32A through which the inserter 21 is inserted and an extending portion 32B extending from the center portion 32A to the outer edge of the sheet-shaped member 3. The slit 32 is formed by a cut. The sheet-shaped member 3 allows the inserter 21 to be inserted into the center portion 32A of the slit via the extending portion 32B. The slit 32 may have a hole (corresponding to the center portion of the slit) through which the inserter 21 is inserted and an extending portion 32B extending from the hole to the outer edge of the sheet-shaped member 3. That is, the slit 32 may be a simple cut, or may include a hole with a certain amount of space therein.

[0017] As shown in Fig. 2, the sheet-like member 3 with the insert 21 inserted through the slit 32 is placed on the outer surface 11A from the outside of the partition 11 so as to cover the gap 13E between the opening 13C and the insert 21, thereby closing the gap 13E between the opening 13C and the insert 21 with the sheet-like member 3. The sheet-like member 3 is preferably placed so as to be in contact with both the outer surface 11A of the partition 11 and the outer periphery of the insert 21. By placing the sheet-like member 3 in contact with the insert 21 and the partition 11, the opening 13C of the partition 11 can be closed, improving and maintaining fire resistance.

[0018] 3(a) to 3(e), the sheet-like member 3 has three or more through holes 30 provided on the surface 3A, and has a region R in which a polygon 31 formed by connecting adjacent through holes 30 can surround the opening 13C. Note that the through holes 30 are separate from the slit 32 through which the inserter 21 is passed. Furthermore, the through holes 30 are arranged so as to surround the center portion 32A of the slit 32. The position of the inserter 21 in the sheet-like member 3 is determined to some extent by inserting the inserter 21 into the sheet-like member 3 through the slit 32. In addition, by adjusting the position of the sheet-like member 3 so that the opening 13C cannot be seen from all of the through-holes 30 provided on the surface 3A, the opening 13C will remain inside the polygon 31 formed by connecting three or more adjacent through-holes 30. This allows the position of the opening 13C to match the effective area of ​​the sheet-like member 3 (for example, the center position of the sheet-like member 3), making it possible to reliably and easily install the sheet-like member 3 in a predetermined position, thereby improving work efficiency. The polygon 31 formed by connecting three or more adjacent through holes 30 may be, for example, a triangle formed by connecting three through holes 30 as shown in Fig. 3(a) or a rectangle formed by connecting four through holes 30 as shown in Fig. 3(b). Alternatively, it may be a pentagon formed by connecting five through holes 30 as shown in Fig. 3(c), or a hexagon formed by connecting six through holes 30 as shown in Fig. 3(d). In other words, the polygon 31 formed by connecting the through holes 30 may be any shape, and may have any shape, as long as it has a region R that can surround the opening 13C. Region R is an area that can surround opening 13C, and it is preferable that opening 13C can be completely contained within region R as shown in Figures 3(a) to 3(d). Alternatively, as shown in Figure 3(e), it may be possible to arrange the center of gravity of opening 13C within region R so that through-hole 30 and opening 13C do not weigh each other. As shown in Figures 3(a) to 3(e), by providing three or more through-holes 30 on surface 3A, it is possible to prevent horizontal and vertical displacement of sheet-like member 3 relative to opening 13C.

[0019] As shown in FIGS. 4(a) to 4(c), the sheet-like member 3 has two through holes 30 formed on the surface 3A. The two through holes 30 are arranged so as to sandwich the center 32A of the slit 32 therebetween. The distance between the two through holes 30 is greater than the diameter of the opening 13C. This allows the sheet-like member 32 to have the opening 13C located between the two through holes 30. The position of the inserting body 21 in the sheet-like member 3 is determined to some extent by inserting the inserting body 21 into the sheet-like member 3 through the slit 32. In addition, by adjusting the position of the sheet-like member 3 so that the opening 13C cannot be seen from the two through-holes 30 provided on the surface 3A, the opening 13C will remain between the two through-holes 30. This allows the position of the opening 13C to match the effective area of ​​the sheet-like member 3 (for example, the center position of the sheet-like member 3), making it possible to install the sheet-like member 3 reliably and easily, thereby improving work efficiency. The arrangement of the two through holes 30 may be in various arrangement patterns as long as the opening 13C can be positioned between the two through holes 30. For example, as shown in FIG. 4(a), the two through holes 30 are arranged diagonally relative to the opening 13C, which prevents the sheet-like member 3 from shifting horizontally and vertically relative to the opening 13C. As shown in FIG. 4(b), the two through holes 30 are arranged on the left and right sides of the opening 13C, which prevents the sheet-like member 3 from shifting horizontally relative to the opening 13C. As shown in FIG. 4(c), the two through holes 30 are arranged above and below the opening 13C, which prevents the sheet-like member 3 from shifting vertically relative to the opening 13C. In the above description, for convenience of explanation, the description has been divided into a case where two through holes are provided and a case where three or more through holes are provided, but even when three or more through holes are provided, two of the through holes may have the function of the through holes described above using Fig. 4. For example, in Fig. 3(e), two sets of two through holes are provided that are arranged so as to sandwich the center part 32A of the slit therebetween, and the through holes shown in Fig. 3(e) can also be said to have the function described in Fig. 4.

[0020] By using the sheet-like member 3, a fireproof structure can be formed without placing filler such as fireproof putty or rock wool inside the compartment penetration part 15, so there is no variation depending on the worker.

[0021] The maximum width of the through holes 30 provided on the surface 3A of the sheet-like member 3 is not particularly limited, but is, for example, 1 to 10 mm, and preferably 3 to 8 mm. When the maximum width of the through holes 30 is equal to or less than these upper limit values, it is possible to maintain the strength of the sheet-like member 3 while maintaining fire resistance. Furthermore, when the maximum width of the through holes 30 is equal to or greater than these lower limit values, it becomes easier to see the openings 13C through the through holes 30.

[0022] The sheet-shaped member 3 has at least one of a fire-resistant material layer (fire-resistant material) and a non-combustible material layer. The fire-resistant material layer used in the sheet-shaped member 3 is preferably a thermally expandable material that expands when heated. The thermally expandable material prevents the spread of fire by expanding in the event of a fire. The thermally expandable material is preferably formed from a thermally expandable resin composition, as described below. The fire-resistant material layer may also have adhesive properties. The thickness of the fire-resistant material layer is not particularly limited, but is, for example, 0.1 to 10 mm, and preferably 0.5 to 5 mm. When the fire-resistant material layer has a thickness equal to or less than these upper limit values, flexibility is imparted to the sheet-shaped member 3. When the fire-resistant material layer has a thickness equal to or greater than the lower limit values, fire resistance is more easily ensured.

[0023] The sheet-like member 3 may be composed of a single layer of fire-resistant material, a single layer of non-combustible material, or both a fire-resistant layer and a non-combustible material layer. The sheet-like member 3 may also have layers other than the fire-resistant layer and the non-combustible material layer, such as a substrate layer and an adhesive layer.

[0024] The sheet-shaped member 3 may have, for example, an adhesive fire-resistant material layer or an adhesive layer. The adhesive fire-resistant material layer and the adhesive layer may form the outermost surface of the sheet-shaped member 3. That is, the sheet-shaped member 3 may have at least one of an adhesive fire-resistant material layer and an adhesive layer on the inner side (i.e., on the partition section 11 side). With the above-described configuration, the sheet-like member 3 can be fixed to the partition portion 11 without using a fixing member separate from the sheet-like member 3. Furthermore, by imparting adhesiveness to the fire-resistant material layer itself, an adhesive layer is not required, further simplifying the configuration of the sheet-like member 3. The fire-resistant material layer can be made adhesive by forming it from butyl rubber or the like. Note that, when the sheet-like member 3 has an adhesive fire-resistant material layer or an adhesive layer on its outermost surface, a release sheet may be attached to the outermost surface. The release sheet is preferably peeled off from the outermost surface when in use. Furthermore, the sheet-like member 3 can be fixed to the partition section 11 by fixing members such as tackers and screws that are separate from the sheet-like member 3. These fixing members are preferably installed on the outside of the sheet-like member 3 (i.e., on the opposite side from the partition section 11). Of course, the sheet-like member 3 may be fixed to the partition portion 11 by a combination of two or more of these.

[0025] The non-combustible material layer used in the sheet-like member 3 is made of a non-combustible material. Non-combustible materials are those defined in the Building Standards Act and the Enforcement Order of the Building Standards Act. Specific examples of the non-combustible material layer include metal foils such as aluminum foil and copper foil, glass cloth, and metal foil composites such as composites of metal foil and glass cloth, such as aluminum glass cloth. Of these, aluminum glass cloth is preferred from the viewpoint of fire resistance. The thickness of the noncombustible material layer is not particularly limited, but is, for example, 0.01 to 1 mm, and preferably 0.05 to 0.5 mm. When the noncombustible material layer has a thickness equal to or less than these upper limits, flexibility is imparted to the sheet-like member 3. When the noncombustible material layer has a thickness equal to or greater than the lower limits, fire resistance is more easily ensured.

[0026] Examples of the substrate constituting the substrate layer include paper, cloth, resin film, etc. The thickness of the substrate is, for example, 0.01 to 1 mm, and preferably 0.05 to 0.5 mm. The pressure-sensitive adhesive layer is preferably formed from a pressure-sensitive adhesive, and examples of the pressure-sensitive adhesive that can be used include acrylic pressure-sensitive adhesives, urethane pressure-sensitive adhesives, rubber pressure-sensitive adhesives, and silicone resin pressure-sensitive adhesives. The pressure-sensitive adhesive layer may be non-flammable, semi-non-flammable, or flame-retardant, and a flame retardant may be blended into the pressure-sensitive adhesive used. The thickness of the pressure-sensitive adhesive layer is, for example, 5 to 400 μm, and preferably 10 to 150 μm.

[0027] The thickness of the sheet-like member 3 is not particularly limited, but is, for example, 0.1 to 10 mm, and preferably 0.5 to 5 mm.

[0028] When the sheet-like member 3 has a multi-layer structure, it may have a two-layer structure, or a three-layer or more layer structure. Examples of two-layer structures include a non-combustible material layer / fire-resistant material layer, a non-combustible material layer / adhesive layer, a fire-resistant material layer / adhesive layer, a substrate / fire-resistant material layer, and a substrate / non-combustible material layer. Furthermore, examples of three-layer structures that have an adhesive layer include non-combustible material layer / fire-resistant material layer / adhesive layer, substrate / fire-resistant material layer / adhesive layer, substrate / non-combustible material layer / adhesive layer, etc. Other examples of three-layer structures that do not have an adhesive layer include non-combustible material layer / substrate / fire-resistant material layer, substrate / non-combustible material layer / fire-resistant material layer, and substrate / fire-resistant material layer / non-combustible material layer. Examples of structures with four or more layers include a three-layer structure in which an additional adhesive layer is provided as the outermost layer of the three-layer structure not provided with an adhesive layer. Typical examples include adhesive layer / non-combustible material layer / substrate / fire-resistant material layer, non-combustible material layer / substrate / fire-resistant material layer / adhesive layer, substrate / non-combustible material layer ... and substrate / fire-resistant material layer / non-combustible material layer / adhesive layer. Furthermore, in the above multilayer structures, adjacent non-combustible material layers and fire-resistant material layers, non-combustible material layers and substrates, and fire-resistant material layers and substrates may be bonded together with known adhesives, and therefore, in each of the above laminated structures, an adhesive layer may be provided between each of the above layers. In the multilayer structure, the sheet-shaped member 3 may have the same layer configuration throughout its entirety, or may have a partially different structure. For example, a pressure-sensitive adhesive layer may be provided on a portion of the sheet-shaped member 3, so that a portion has a single-layer structure and a portion has a multilayer structure.

[0029] [Cover member] The cover member 5 is provided so as to be connected to the sheet-like member 3, and is a member that covers the sheet-like member 3 provided in the partition section 11. For example, as shown in FIG. 1, four cover members 5 are used so as to be connected to the four side edges of the sheet-like member 3, forming four extension portions that extend outward from the sheet-like member 3, and as shown in FIG. 2, they cover the sheet-like member 3 provided in the partition section 11. Examples of means by which the cover member 5 is provided so as to be connected to at least a portion of the sheet-like member 3 include means for fixing by known fixing means such as an adhesive, a pressure-sensitive adhesive, an adhesive tape, or a fixing member such as a tacker or a screw. Here, the adhesive, the pressure-sensitive adhesive, and the adhesive tape are preferably made of a non-combustible material, a semi-non-combustible material, or a flame-retardant material, and it is preferable to blend a flame retardant or the like into the adhesive, the pressure-sensitive adhesive, or the like. The cover member 5 is sheet-shaped and can be deformed, so that it can easily cover the sheet-shaped member 3.

[0030] As shown in FIG. 2 , the cover member 5 is placed so as to cover the gap 13E between the sheet-like member 3 and the opening 13C exposed by the slit 32 in the sheet-like member 3 and the inserting body 21. The portion of the cover member 5 that covers the sheet-like member 3 and the gap 13E surrounds the inserting body 21 so as to be in contact with the inserting body 21, and is fixed to the inserting body 21 by a string-like member 22 wound around it from the outside (i.e., the side opposite the inserting body 21). The string-like member 22 may be any bendable member, and is preferably a wire member including a wire. The wire member may be a metal wire alone, a resin-coated wire such as Nejirikko (registered trademark) in which a metal wire is coated with resin, or a wire and fiber entangled member such as a maul. Using a wire member allows the cover member 5 to be fixed to the inserting body 21 simply by twisting it. In another embodiment (not shown), the cover member 5 has a portion that covers the sheet-like member 3 and the gap 13E that surrounds the inserter 21 so as to be in contact with the inserter 21, and is fixed to the inserter 21 by an adhesive tape wound from the outside (i.e., the side opposite the inserter 21). The adhesive tape preferably has a substrate and an adhesive layer provided on one side of the substrate. The substrate may be made of paper, resin film, cloth, or the like, or may be made of the non-flammable materials described above. The adhesive layer may be made of, for example, an acrylic adhesive, a urethane adhesive, a rubber adhesive, or a silicone resin adhesive. The adhesive may also contain a known flame retardant. In another embodiment not shown, the cover member 5 may be configured so that the portion covering the sheet-like member 3 and the gap 13E surrounds the inserting body 21 so as to be in contact with it, and is fixed to the inserting body 21 by a fixing member such as a stapler or screw installed from the outside (i.e., the side opposite the inserting body 21). In another embodiment not shown, the cover member 5 may have, for example, an adhesive fire-resistant material layer or an adhesive layer. The adhesive fire-resistant material layer and the adhesive layer may form the outermost surface of the cover member 5. That is, the cover member 5 may have at least one of an adhesive fire-resistant material layer and an adhesive layer on the inner side (i.e., the side facing the inserter 21).

[0031] The cover member 5 preferably covers a part of the sheet-like member 3 so that the part of the sheet-like member 3 cannot be seen from the outside. Specifically, it is preferable to cover the part of the sheet-like member 3 through which the insert 21 is inserted, thereby improving the design of the compartment penetration part 15 and the fire resistance of the compartment penetration part 15. On the other hand, the cover member 5 may cover a portion of the sheet-like member 3 so that it is visible from the outside. Specifically, the cover member 5 may make the end surface 3C of the sheet-like member 3 visible from the outside, as shown in Fig. 2. By making the end surface 3C of the sheet-like member 3 visible from the outside when the cover member 5 is installed, it is possible to easily perform a visual inspection to confirm that the sheet-like member 3 is installed in the compartment penetration portion 15. Fig. 2 shows a configuration in which only the end surface 3C is visible, but as shown in Fig. 5, a portion of the surface 3A of the sheet-like member 3 may be exposed, making part of the surface 3A visible in addition to the end surface 3C.

[0032] The cover member 5 is preferably placed so as to be in contact with the sheet-like member 3 and the insert 21. By placing the cover member 5 so as to be in contact with the sheet-like member 3 and the insert 21, the opening 13C of the partition portion 11 can be blocked by the sheet-like member 3 and the cover member 5, thereby improving fire resistance.

[0033] The cover member 5 is installed so as to form a gap 40 between it and the sheet-like member 3. The gap 40 between the sheet-like member 3 and the cover member 5 allows the cover member 5 to be fixed with a margin for axial movement of the insert 21. Since the cover member 5 is fixed to the insert 21 with a margin, even if the insert 21 arranged inside the sheet-like member 3 and the cover member 5 is moved in the axial direction after the sheet-like member 3 and the cover member 5 are installed, the margin of the cover member 5 prevents the sheet-like member 3 and the cover member 5 from moving together with the insert 21. By preventing the sheet-like member 3 and the cover member 5 from moving together with the insert 21, it is possible to prevent the sheet-like member 3 and the cover member 5 from shifting from the compartment penetration portion 15. In other words, with this configuration, the sheet-like member 3 and the cover member 5 can be maintained and arranged in an appropriate position in the compartment penetration portion 15, and the fire resistance of the compartment penetration portion 15 can be maintained. There is a gap 40 between the sheet-like member 3 and the cover member 5, and various configurations can be used to fix the cover member 5 with a margin for axial movement of the inserting body 21. For example, a configuration in which at least a part of the cover member 5 is made of a flexible or stretchable material that allows it to bend or curve, or a configuration in which at least a part of the cover member 5 is fixed to the inserting body 21 with some slack, can be mentioned.

[0034] The cover member 5 may be made of a single layer of fire-resistant material, a single layer of non-combustible material, or both a fire-resistant and non-combustible material layer, but preferably has a non-combustible material layer, and more preferably is made of a non-combustible material layer. Furthermore, the cover member 5 may have layers other than the fire-resistant and non-combustible material layers, such as a material layer made of a material other than a non-combustible material, an adhesive layer, etc. The cover member 5 is preferably made of a metal foil such as aluminum foil, glass cloth, or a metal foil composite, which is a composite of metal foil and glass cloth such as aluminum glass cloth. These constitute the non-combustible material layer. Among these, aluminum glass cloth is more preferred from the viewpoint of fire resistance. The thickness of the non-combustible material layer is not particularly limited, but is, for example, 0.01 to 1 mm, and preferably 0.05 to 0.5 mm. When the non-combustible material layer has a thickness equal to or less than these upper limits, flexibility is imparted to the cover member 5. Therefore, even if the cover member 5 has a non-combustible material layer, it can be wrapped around the outer periphery of the insert 21 while being in close contact with the insert 21. Furthermore, when the thickness is equal to or greater than the lower limit, fire resistance is more easily ensured.

[0035] As described above, the cover member 5 is preferably a sheet that can be deformed to cover the sheet-like member 3, and is preferably thinner than the sheet-like member 3 so as to be flexible and easily deformable. The thickness of the cover member 5 is not particularly limited, but is, for example, 0.01 to 1 mm, and preferably 0.05 to 0.5 mm.

[0036] The fire-resistant material layer used in the cover member 5 is preferably a thermally expandable material that expands when heated. The thermally expandable material prevents the spread of fire by expanding in the event of a fire. The thermally expandable material is preferably formed from a thermally expandable resin composition, as described below. The fire-resistant material layer may also have adhesive properties. The thickness of the fire-resistant material layer is not particularly limited, but is, for example, 0.01 to 1 mm, and preferably 0.05 to 0.5 mm. When the fire-resistant material layer has a thickness equal to or less than these upper limits, flexibility is imparted to the cover member 5. Therefore, even if the cover member 5 has a fire-resistant material layer, it can be wrapped around the outer periphery of the insert 21. Furthermore, when the thickness is equal to or greater than the lower limit, fire resistance is more easily ensured.

[0037] The cover member 5 may have an adhesive fire-resistant material layer or an adhesive layer. The adhesive fire-resistant material layer and the adhesive layer may form the outermost surface of the cover member 5. With the above-described configuration, the cover member 5 can be fixed to the sheet-like member 3 or the insert 21 without using a fixing member separate from the cover member 5. Furthermore, by imparting adhesiveness to the fire-resistant material layer itself, it is not necessary to provide an adhesive layer, which further simplifies the configuration of the cover member 5. When the cover member 5 has an adhesive fire-resistant material layer or an adhesive layer on its outermost surface, a release sheet may be attached to the outermost surface. The release sheet may be peeled off from the outermost surface when in use.

[0038] (Thermal Expandable Resin Composition) The thermally expandable resin composition used in the fire-resistant material such as the fire-resistant material layer will be described in more detail below. The thermally expandable resin composition contains a resin component and a thermally expandable material. When the thermally expandable member is formed from the thermally expandable resin composition containing the resin component, the sheet-like member 3 and the cover member 5 can be easily curved and deformed. Examples of thermally expandable materials include foaming agents that expand upon heating, thermally expandable layered inorganic materials such as vermiculite and thermally expandable graphite, with thermally expandable graphite being preferred. The use of thermally expandable graphite allows for appropriate expansion by the heat of a fire, and the mechanical strength of the expansion residue after expansion is excellent, making it easier to improve fire resistance. The thermally expandable material referred to here does not substantially expand upon molding, etc., as described below, and the thermally expandable resin composition maintains its thermal expandability in the fire-resistant material.

[0039] The expansion start temperature of the thermally expandable material is not particularly limited, but is preferably 150 to 350°C, more preferably 170 to 300°C, and even more preferably 180 to 280°C. By setting the temperature at or below these lower limits, the thermally expandable material is prevented from accidentally expanding due to heating other than that caused by a fire. Furthermore, by setting the temperature at or below the upper limits, the thermally expandable material is more likely to expand reliably due to heating caused by a fire. The expansion starting temperature of a thermally expandable material can be measured by heating a predetermined amount (e.g., 100 mg) of the material at a constant heating rate (e.g., 10°C / min) and measuring the temperature at which the normal force rises. Any measuring device can be used as long as it is capable of controlling the measurement temperature and measuring the normal stress, and a rheometer, for example, can be used. The expansion ratio of the thermally expandable member is preferably 3 times or more, and more preferably 10 times or more. The upper limit of the expansion ratio is not particularly limited, but is, for example, 70 times, preferably 50 times. When multiple fire-resistant material layers with different expansion ratios are laminated on a sheet-shaped member, the expansion ratio should be selected within the above range. The expansion ratio can be calculated by feeding the thermally expandable member into an electric furnace, heating it at 600°C for 30 minutes, measuring the thickness of a test piece, and then calculating the ratio by dividing the thickness of the test piece by the following formula: (thickness of the test piece after heating) / (thickness of the test piece before heating).

[0040] The thermally expandable resin composition in which the thermally expandable material is thermally expandable graphite will be described in detail below. Examples of the resin component of the thermally expandable resin composition include thermoplastic resins, thermosetting resins, and elastomers. Examples of thermoplastic resins include polyvinyl chloride (PVC), chlorinated polyvinyl chloride resin (CPVC), fluororesin, polyphenylene ether, modified polyphenylene ether, polyphenylene sulfide, polycarbonate, polyetherimide, polyetheretherketone, polyarylate, polyamide, polyamideimide, polybutadiene, polyimide, acrylic resin, polyacetal, polyamide, polyethylene (PE), polypropylene (PP), polyolefins such as ethylene vinyl acetate (EVA), polyesters such as ethylene-propylene-diene copolymer (EPDM), chloroprene (CR), polyethylene terephthalate, and polybutylene terephthalate, polycarbonate, polystyrene (PS), polyphenylene sulfide, acrylonitrile-butadiene-styrene copolymer (ABS), acrylonitrile-styrene-acrylonitrile copolymer (ASA), and acrylonitrile / ethylene-propylene-diene / styrene copolymer (AES). Examples of the curable resin include epoxy resin, phenol resin, melamine resin, urea resin, unsaturated polyester resin, alkyd resin, polyurethane, and thermosetting polyimide.

[0041] Examples of elastomers include natural rubber, silicone rubber, styrene-butadiene rubber, isoprene rubber, butadiene rubber, chloroprene rubber, acrylonitrile-butadiene rubber, nitrile-butadiene rubber, butyl rubber, ethylene-propylene rubber, ethylene-propylene-diene rubber, urethane rubber, silicone rubber, and fluororubber. Other examples include thermoplastic elastomers such as olefin-based thermoplastic elastomers (TPO), styrene-based thermoplastic elastomers (TPS), ester-based thermoplastic elastomers, amide-based thermoplastic elastomers, and vinyl chloride-based thermoplastic elastomers. The resin component of the thermally expandable resin composition may be one type or a combination of two or more types.

[0042] Furthermore, the thermally expandable resin composition is more likely to have adhesiveness when an elastomer is used as a resin component. To facilitate the development of adhesiveness, the elastomer preferably contains a liquid elastomer. The liquid elastomer is an elastomer that is liquid at room temperature and normal pressure.

[0043] The thermally expandable resin composition may contain a plasticizer. A plasticizer is preferably used when the resin component is a thermoplastic resin such as polyvinyl chloride resin. Specific examples of the plasticizer include phthalate ester plasticizers such as di-2-ethylhexyl phthalate (DOP), dibutyl phthalate (DBP), diheptyl phthalate (DHP), and diisodecyl phthalate (DIDP); adipic acid esters such as di-2-ethylhexyl adipate (DOA), diisobutyl adipate (DIBA), and dibutyl adipate (DBA), and fatty acid ester plasticizers such as adipic acid polyester; epoxidized ester plasticizers such as epoxidized soybean oil; trimellitic acid ester plasticizers such as tri-2-ethylhexyl trimellitate (TO™) and triisononyl trimellitate (TINT™); phosphate ester plasticizers such as trimethyl phosphate (TMP) and triethyl phosphate (TEP); and process oils such as mineral oil. One or more plasticizers can be used. When the thermally expandable resin composition contains a plasticizer, the content of the plasticizer in the thermally expandable resin composition is, for example, in the range of 0.3 parts by mass or more and 150 parts by mass or less, and preferably in the range of 10 parts by mass or more and 100 parts by mass or less, per 100 parts by mass of the resin component. When the amount of the plasticizer is equal to or greater than these lower limits, good moldability is likely to be achieved, and when the amount is equal to or less than the upper limits, an appropriate strength is imparted to the molded article.

[0044] The total content of the resin component and the plasticizer is preferably 10% by mass or more and 90% by mass or less, more preferably 25% by mass or more and 80% by mass or less, and even more preferably 40% by mass or more and 70% by mass or less, based on the total amount of the resin composition. By setting the content at or above these lower limits, the moldability of the thermally expandable member can be improved. In addition, flexibility is ensured, making it easy to bend and deform. In addition, by setting the content at or below the upper limits, it becomes possible to blend sufficient amounts of components such as thermally expandable graphite and inorganic filler. The total content of the resin component and the plasticizer means the total content of both the resin component and the plasticizer when both are contained, and means the content of the resin component alone when no plasticizer is contained.

[0045] Thermally expandable graphite is a conventionally known substance, and is produced by treating powder of natural flake graphite, pyrolytic graphite, kish graphite, or the like with an inorganic acid such as concentrated sulfuric acid, nitric acid, or selenic acid, and a strong oxidizing agent such as concentrated nitric acid, perchloric acid, perchlorates, permanganates, dichromates, or hydrogen peroxide to produce a graphite intercalation compound. The produced thermally expandable graphite is a crystalline compound that maintains the layered structure of carbon. The thermally expandable graphite used in the present invention may be thermally expandable graphite obtained by acid treatment and neutralizing it with ammonia, aliphatic lower amines, alkali metal compounds, alkaline earth metal compounds, or the like. Examples of the aliphatic lower amine include monomethylamine, dimethylamine, trimethylamine, ethylamine, propylamine, and butylamine. Examples of the alkali metal compounds and alkaline earth metal compounds include hydroxides, oxides, carbonates, sulfates, and organic acid salts of potassium, sodium, calcium, barium, magnesium, and the like.

[0046] The particle size of the thermally expandable graphite is not particularly limited, but is preferably in the range of 20 to 200 mesh. If the particle size is equal to or greater than the lower limit, the degree of expansion of the graphite tends to increase, resulting in good expandability. On the other hand, if the particle size is equal to or less than the upper limit, good dispersibility when kneaded with a resin is achieved, improving moldability.

[0047] The content of thermally expandable graphite in the thermally expandable resin composition is, for example, 3 parts by mass or more and 300 parts by mass or less, relative to 100 parts by mass of the resin component. When the content of thermally expandable graphite is 3 parts by mass or more, the thermal expandability is good. Furthermore, when the content is 300 parts by mass or less, the moldability is good, and the surface properties, mechanical properties, flexibility, etc. of the sealing member are also good. Furthermore, by selecting the content of thermally expandable graphite within the above range, the expansion ratio can be easily adjusted within a desired range. From these viewpoints, the content of thermally expandable graphite is preferably in the range of 10 parts by mass or more and 200 parts by mass or less, more preferably in the range of 15 parts by mass or more and 100 parts by mass or less.

[0048] The thermally expandable resin composition may further contain an inorganic filler. There are no particular limitations on the inorganic filler, as long as it is an inorganic filler that is generally used in thermally expandable resin compositions. Specific examples include silica, diatomaceous earth, alumina, zinc oxide, titanium oxide, calcium oxide, magnesium oxide, iron oxide, tin oxide, antimony oxide, ferrites, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, basic magnesium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate, barium carbonate, dawnnite, hydrotalcite, calcium sulfate, barium sulfate, gypsum fiber, calcium silicate, talc, clay, mycelium, montmorillonite, bentonite, activated clay, seviolite, imogolite, sericite, glass fiber, glass beads, silica balloon, aluminum nitride, aluminum phosphite, boron nitride, silicon nitride, carbon black, graphite, carbon fiber, carbon balloon, charcoal powder, various metal powders, potassium titanate, magnesium sulfate, lead zirconium titanate, aluminum borate, molybdenum sulfide, silicon carbide, stainless steel fiber, zinc borate, various magnetic powders, slag fiber, fly ash, and dewatered sludge. The inorganic filler may be used alone or in combination of two or more. When an inorganic filler is contained, the content of the inorganic filler in the thermally expandable resin composition is preferably in the range of 3 parts by mass or more and 200 parts by mass or less, and more preferably in the range of 10 parts by mass or more and 150 parts by mass or less, per 100 parts by mass of the resin component.

[0049] The thermally expandable resin composition may contain a known tackifier, which makes it easier to impart tackiness to the thermally expandable member. Furthermore, the thermally expandable resin composition used in the present invention may contain additives commonly used in thermally expandable resin compositions, such as heat stabilizers, lubricants, processing aids, antioxidants, antistatic agents, pigments, crosslinking agents, crosslinking accelerators, etc., as needed, within the range that does not impair the physical properties of the composition. Among these, it is preferable to use processing aids.

[0050] The thermally expandable member can be manufactured, for example, as follows: First, predetermined amounts of resin components, a thermally expandable material, and other additives, if necessary, are mixed in a mixer such as a kneading roll to obtain a thermally expandable resin composition. The thermally expandable resin composition may be diluted by adding a solvent as appropriate. The thermally expandable resin composition, diluted as necessary, is applied to a support such as a substrate or a release sheet, and then appropriately dried, cured, etc., to form a fire-resistant material layer (thermally expandable member) on one side of the support. Alternatively, the fire-resistant material layer may be formed on one side of the support by a known method such as extrusion molding. The fire-resistant material layer formed on the release sheet may be peeled from the release sheet to form a sheet-like member consisting of a single fire-resistant material layer. After peeling from the release sheet, the sheet-like member may be laminated on another layer to obtain a multilayered sheet-like member. Alternatively, the composition may be laminated on another layer while still laminated on the release sheet or another support.

[0051] The construction method for the compartment penetration structure 10 in this embodiment includes a step of installing the sheet-like member 3 described above so as to block at least a portion of the gap 13E between the opening 13C of the compartment penetration portion 15 provided in the partition portion 11 and the insert 21. In the step of installing the sheet-like member 3, two or more through holes 30 are provided on the surface 3A of the sheet-like member 3, and the opening 13C can be positioned between two through holes 30. Alternatively, the sheet-like member 3 is installed on the partition portion 11 so that a polygon 31 formed by connecting adjacent through holes 30 of three or more through holes 30 surrounds the opening 13C. Then, the sheet-like member 3 is covered with a cover member 5 installed on the sheet-like member 3, and a portion of the cover member 5 is fixed to the insert 21 so as to block at least a portion of the gap 13E between the opening 13C and the insert 21. This construction is therefore easy.

[0052] The sheet-like member 3 and cover member 5 used in construction may be separate members, and in the case where they are separate members, construction can be carried out by placing the sheet-like member 3 on the partition section 11, then adhering the cover member 5 to the sheet-like member 3 and installing it, and then covering the sheet-like member 3 with the installed cover member 5. Furthermore, the sheet-like member 3 and cover member 5 used in construction may be an integrated member to which the sheet-like member 3 and cover member 5 are previously adhered.

[0053] According to the configuration of this embodiment, the gap 13E inside the opening 13C of the compartment penetration part 15 is closed by the sheet-like member 3 and the cover member 5, and at least the sheet-like member 3 contains a fire-resistant material. Therefore, it is possible to impart appropriate fire resistance to the compartment penetration part treatment structure 10. Furthermore, in this embodiment, by positioning the sheet-like member 3 so that the opening 13C cannot be seen from the through hole 30 when the inserting body 21 is inserted inside the sheet-like member 3, the sheet-like member 3 can be reliably and easily installed at the position where the opening 13C is located, thereby improving work efficiency. In addition, in this embodiment, the fireproof structure is formed by the sheet-like member 3 and the cover member 5 without placing filler materials such as fireproof putty or rock wool inside the compartment penetration portion 15, so there is no variation among workers.

[0054] Furthermore, in this embodiment, at least a portion of the sheet-like member 3 and the cover member 5 are exposed and visible from the outside. If a fixing member is provided to fix the sheet-like member 3 or the cover member 5, the fixing member should also be positioned in a position that is visible from the outside. No other members are provided inside the compartment penetration portion 15 than the insert 21. Therefore, the compartment penetration treatment material can be easily inspected visually or by photographing whether it has been installed as specified. Furthermore, it is less likely that installation will be forgotten.

[0055] [Modification of the first embodiment] In the compartment penetration processing structure 10 shown in Figure 1, the cover member 5 is shown as four extending portions extending outward from the sheet-like member 3, but as shown in Figure 6, it may also be a single sheet-like member that is slightly larger than the sheet-like member 3. 6, the cover member 5 has slits 50 through which the penetrating body 21 is inserted, and at least one of the slits 50 extends to the outer edge of the cover member 5. The slits 50 are formed by cutting. The cover member 5 allows the penetrating body 21 to be inserted into the cover member 5 through the slit 50 that extends to the outer edge.

[0056] Furthermore, in the compartment penetration structure 10 shown in FIGS. 2 and 5, the cover member 5 is adhered to only a portion of the surface 3A of the sheet-like member 3. However, when using a single sheet-like cover member 5 that is slightly larger than the sheet-like member 3, as shown in FIG. 6, the cover member 5 can be adhered to the entire surface 3A of the sheet-like member 3, as shown in FIG. 7. That is, the sheet-like member 3 may be laminated on one surface of the cover member 5. In such a structure, the cover member 5 preferably has a noncombustible material layer. The sheet-like member 3 and the cover member 5 may have a combination of a noncombustible material layer and a fire-resistant material layer to improve fire resistance. Furthermore, an adhesive layer may be provided on the surface of the cover member 5 to which the sheet-like member 3 is adhered, and this adhesive layer allows the cover member 5 to easily adhere to the sheet-like member 3.

[0057] Furthermore, the sheet-shaped member 3 may have a structure in which the base material, which is one layer of the sheet-shaped member 3, extends outward beyond the other layers. With such a structure, the extending portion of the base material can be used as the cover member 5 as it is. Furthermore, although the compartment penetration structure 10 shown in FIGS. 1 and 2 includes the sheet-like member 3 and the cover member 5, the cover member 5 may be omitted.

[0058] [Second embodiment] Next, a second embodiment of the present invention will be described in detail. The second embodiment differs from the first embodiment in that the cover member 5 of the compartment penetration treatment material is made of an elastic foam, as shown in Figures 8 and 9. The differences between the first embodiment and the second embodiment will be described below. Furthermore, parts whose description is omitted are the same as those in the first embodiment. Furthermore, in the following description, parts having the same configuration as those in the first embodiment will be given the same reference numerals.

[0059] 9, the cover member 5 is fixed in a state where it is wrapped around the outer peripheral surface of the insert 21 one or more times. The cover member 5 is preferably in close contact with the insert 21, and therefore may be deformed appropriately to fit the shape of the insert 21. Here, the cover member 5 may be fixed to the outer circumferential surface of the inserter 21 by an adhesive layer disposed on the inner circumferential side. Alternatively, the cover member 5 may be fixed to the inserter 21 by a fixing member provided separately from the cover member 5. Examples of such fixing members include a string-like member wound around the outer circumferential side of the cover member 5, or an adhesive tape. Alternatively, the cover member 5 may be fixed to the inserter 21 by a combination of two or more of these.

[0060] The cover member 5 preferably has an adhesive layer on one surface 5A. By having an adhesive layer on one surface 5A of the cover member 5, it can be easily wrapped around the outer periphery of the inserter 21 one or more times. The pressure-sensitive adhesive layer is preferably formed from a pressure-sensitive adhesive, and examples of the pressure-sensitive adhesive that can be used include acrylic pressure-sensitive adhesives, urethane pressure-sensitive adhesives, rubber pressure-sensitive adhesives, and silicone resin pressure-sensitive adhesives. The pressure-sensitive adhesive layer may be non-flammable, semi-non-flammable, or flame-retardant, and a flame retardant may be blended into the pressure-sensitive adhesive used. The thickness of the pressure-sensitive adhesive layer is, for example, 5 to 400 μm, and preferably 10 to 150 μm. By configuring the cover member 5 to have an adhesive layer on one surface 5A thereof, the cover member 5 can be fixed to the insertion body 21 without using a fixing member separate from the cover member 5. When an adhesive layer is provided on one surface 5A of the cover member 5, a release sheet may be attached to one surface 5A. The release sheet may be peeled off from one surface 5A when the cover member 5 is used.

[0061] By wrapping the cover member 5 around the outer periphery of the insert 21 one or more times, an end face 5B is formed on the cover member 5, and the end face 5B preferably covers at least a part of the surface 3A of the sheet-like member 3, making at least a part of the sheet-like member 3 invisible from the outside. By making at least a part of the sheet-like member 3 invisible with the cover member 5, the design of the compartment penetration part 15 can be improved and the fire resistance of the compartment penetration part 15 can be enhanced. Furthermore, it is preferable that the cover member 5 allows at least one of the end face 3C and the surface 3A of the sheet-like member 3 to be visible from the outside. By allowing at least one of the end face 3C and the surface 3A of the sheet-like member 3 to be visible from the outside when the cover member 5 is installed, visual inspection of whether the sheet-like member 3 is installed in the compartment penetration part 15 can be easily performed.

[0062] The cover member 5 is made of an elastic foam having flexibility that allows it to follow the outer periphery of the inserting body 21. Specific examples of elastic foam include olefin-based resin foam and urethane-based resin foam. The thickness of the elastic foam is not particularly limited, but is, for example, 0.1 to 10 mm, and preferably 0.15 to 5 mm. When the elastic foam has a thickness equal to or less than these upper limits, flexibility is imparted to the cover member 5. Therefore, the cover member 5 can be wrapped around the outer periphery of the insert 21 while being in close contact with the outer periphery. Furthermore, when the thickness is equal to or greater than the lower limit, the cover member 5 can be easily disposed.

[0063] The construction method for the compartment penetration structure 10 in this embodiment includes a step of installing the sheet-like member 3 described above so as to block at least a portion of the gap 13E between the opening 13C of the compartment penetration portion 15 provided in the partition 11 and the insert 21. In the step of installing the sheet-like member 3, two or more through holes 30 are provided on the surface 3A of the sheet-like member 3, and the opening 13C can be positioned between two through holes 30. Alternatively, the sheet-like member 3 is installed on the partition 11 so that a polygon 31 formed by connecting adjacent through holes 30 of three or more through holes 30 surrounds the opening 13C. Then, the cover member 5 is wrapped around the insert 21 one or more times, and the cover member 5 covers at least a portion of the sheet-like member 3 and is fixed so as to block at least a portion of the gap 13E between the opening 13C and the insert 21. This construction is therefore easy.

[0064] According to the configuration of this embodiment, the gap 13E inside the opening 13C of the compartment penetration part 15 is closed by the sheet-like member 3 and the cover member 5, and at least the sheet-like member 3 contains a fire-resistant material. Therefore, it is possible to impart appropriate fire resistance to the compartment penetration part treatment structure 10. Furthermore, in this embodiment, by positioning the sheet-like member 3 so that the opening 13C cannot be seen from the through hole 30 when the inserting body 21 is inserted inside the sheet-like member 3, the sheet-like member 3 can be reliably and easily installed at the position where the opening 13C is located, thereby improving work efficiency. In addition, in this embodiment, the fireproof structure is formed by the sheet-like member 3 and the cover member 5 without placing filler materials such as fireproof putty or rock wool inside the compartment penetration portion 15, so there is no variation among workers.

[0065] Furthermore, in this embodiment, at least a portion of the sheet-like member 3 and the cover member 5 are exposed and visible from the outside. If a fixing member is provided to fix the sheet-like member 3 or the cover member 5, the fixing member should also be positioned in a position that is visible from the outside. No other members are provided inside the compartment penetration portion 15 than the insert 21. Therefore, the compartment penetration treatment material can be easily inspected visually or by photographing whether it has been installed as specified. Furthermore, it is less likely that installation will be forgotten.

[0066] [Other embodiments] The present invention is not limited to the configurations of the first and second embodiments described above, and any improvements and modifications may be made without departing from the technical spirit of the present invention. For example, in each of the above embodiments, the compartment penetration treatment material may have a member connected to the sheet-like member 3 and placed inside the compartment penetration part 15. Examples of such members include fire-resistant materials and accessories. As a specific example, a modified example of the first embodiment is shown in Fig. 10. As the fire-resistant material, for example, a block-shaped fire-resistant material 60 as shown in Fig. 10 is used, and the block-shaped fire-resistant material 60 is preferably connected to the sheet-shaped member 3. The manner of connection is not particularly limited, and for example, the fire-resistant material 60 may be laminated on one side of the sheet-shaped member 3 or connected to an end face of the sheet-shaped member 3. As described above, the fire-resistant material 60 is preferably made of a thermally expandable material that expands when heated, and in particular, it is preferably made of a thermally expandable resin composition.

[0067] Furthermore, in the above description, the partition 11 is a hollow wall having a hollow portion 13 therein, but it is not limited to a hollow wall and may be a wall without a hollow, for example, made of a single wall material. Furthermore, the partition 11 is not limited to a wall of a building and may be a ceiling or floor of a building. Even if the partition is a ceiling or floor, it may have a structure with a hollow portion between two partition materials, or a structure without a hollow portion, for example, made of a single partition material.

[0068] Furthermore, in each of the above embodiments, it has been explained on the assumption that compartment penetration treatment materials of the same structure are provided in both openings 13C, 13D of partition 11 (i.e., on both sides of partition 11), but compartment penetration treatment structures of different structures may be provided in each opening 13C, 13D. For example, one opening 13C may be provided with a compartment penetration treatment structure according to the first embodiment, and the other opening 13D may be provided with a compartment penetration treatment structure according to the second embodiment. Furthermore, the compartment penetration treatment material in opening 13D may be omitted. [Explanation of symbols]

[0069] 3 Sheet-like members 5 Cover member 10 Compartment penetration processing structure 11 Partition 12A, 12B wall material 13 Hollow part 13A,13B through hole 13C,13D opening 13E Gap 15 Compartment penetration 21 Penetrator 22 String-like member 30 through holes 31 Polygon 32 Slit 32A Center 32B Extension 33 Adhesive layer 40 void 50 slits 60 Fireproof materials

Claims

[Claim 1] A construction method for a compartment penetration processing structure in which a compartment penetration part formed in a partition part of a building and into which a long penetrating body is inserted has a fire-resistant structure, a step of placing a sheet-like member so as to close at least a part of a gap between the opening of the compartment penetration portion provided in the partition portion and the insertion body, The surface of the sheet-like member has two or three or more through holes for positioning the sheet-like member (excluding holes through which fixing members for fixing the sheet-like member to the partition section are inserted). ) is provided, and the sheet-like member is positioned so that the opening cannot be seen from the two or more through holes when the inserting body is inserted therein, thereby disposing the opening between the two through holes, or the sheet-like member is installed so that a polygon formed by connecting the three or more through holes that are adjacent to each other surrounds the opening, The sheet-like member has a slit extending to its outer edge, and the insert is inserted into the interior of the sheet-like member through the slit, in a construction method for a compartment penetration processing structure.

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