Closure member, through-hole closure structure, and through-hole closure method

Abstract

To provide a closing member which can suppress formation of a gap and deterioration of appearance, a closing structure for an open hole and a closing method for an open hole.SOLUTION: A closing member 30 forming a closing structure of an open hole Wa has a plurality of slits 35 which are cut from one end of the closing member 30 in a plate thickness direction toward the other end. The plurality of slits 35 include: a plurality of first slits 351 extending in a first crossing direction F1; and a plurality of second slits 352 extending in a second crossing direction F2. The closing member 30 comprises a long plate-shaped substrate on the other end in the plate thickness direction and is provided with a plurality of protrusion parts 42 which protrude from the substrate. Each protrusion part 42 has a rod-shape surrounded by the first slits 351 and the second slits 352. Each protrusion part 42 is individually deformable in three-dimensional directions and can be cut by hand.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present invention relates to a closing member, a closing structure for a through-hole, and a method for closing a through-hole.

Background Art

[0002] In a fire compartment wall as a building wall, a through-hole for allowing a long penetrating member to penetrate therethrough is formed. A closing member is accommodated between the defined surface of the through-hole of the fire compartment wall and the outer surface of the penetrating member. The closing member closes the space between the defined surface of the through-hole and the outer surface of the penetrating member.

[0003] For example, Patent Document 1 discloses a closing member and a closing structure for a through-hole. The closing member disclosed in Patent Document 1 includes a plurality of block portions that can be compressed and deformed. The plurality of block portions are arranged in one direction of the closing member. All the block portions are connected at one end side in the thickness direction of the block portion.

[0004] Further, the closing member disclosed in Patent Document 1 includes a plurality of slits. Each of the plurality of slits is formed between the side surfaces of adjacent block portions in one direction of the closing member. Each of the block portions arranged in one direction of the closing member can be independently compressed and deformed. The side surface of the block portion partitioning the slit is a curved surface.

[0005] In the through-hole closing structure disclosed in Patent Document 1, when the block portion is compressed and deformed by pressing the closing member against the penetrating member, the slit expands between the adjacent block portions in one direction of the closing member, and a gap is formed between the block portions. However, since a non-communication surface is located at the tip in the depth direction of the gap, the gap does not extend linearly along the thickness direction of the fire compartment wall. As a result, the other wall surface side cannot be visually recognized from one wall surface side of the fire compartment wall.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

[0007] Penetrating members include those that bundle together multiple wires or pipes of different thicknesses. In other words, penetrating members can have complex external shapes. The closing member disclosed in Patent Document 1 may not conform well to the outer surface of the penetrating member. For this reason, in a closing structure using the closing member disclosed in Patent Document 1, deformation of the block portion may create gaps between the block portions, and the deformed block portion may protrude from the front side of the fire compartment wall, potentially reducing its appearance. [Means for solving the problem]

[0008] The closing member for solving the above problems is a closing member that is housed in the gap between the inner surface of a through hole provided in a building wall and the outer surface of a through member inserted into the through hole, thereby closing the gap, wherein the closing member is in the shape of a compressible plate, and is provided with a plurality of slits cut from one end to the other in the thickness direction of the closing member, and the closing member is provided with a plate-shaped base material on the other end in the thickness direction and is provided with a plurality of protrusions protruding from the base material, each of the plurality of protrusions is in the shape of a rod formed surrounded by the plurality of slits, and each of the plurality of protrusions is individually deformable in three dimensions and can be cut by hand.

[0009] Regarding the closing member, each of the plurality of protrusions has the same cross-sectional shape continuously in the thickness direction of the plate, the closing member is rectangular in shape when viewed in the thickness direction of the plate, the base material has first edges located at both ends in the longitudinal direction of the base material and second edges located at both ends in a second direction perpendicular to the longitudinal direction and the thickness direction of the plate, and each of the protrusions arranged along the first edge of the base material and the protrusions arranged along the second edge may include two types of protrusions with different cross-sectional shapes.

[0010] With respect to the closing member, the plurality of protrusions may further include protrusions having different cross-sectional shapes from each of the protrusions arranged along the first edge of the base material and the protrusions arranged along the second edge.

[0011] A closing member for solving the above problems is a closing member that is housed in the gap between the inner surface of a through-hole provided in a building wall and the outer surface of a through-member inserted into the through-hole, thereby closing the gap, wherein the closing member is a compressible plate, and the closing member has a plurality of slits cut from one end to the other in the thickness direction of the closing member, and when viewed in the thickness direction of the closing member, the closing member is rectangular, and the plurality of slits intersect diagonally with one of the four sides of the rectangle and are linear until they reach another side different from that one side The gist of the invention is that the closing member includes a plurality of first slits extending in a certain direction, and a plurality of second slits that intersect one side at an angle different from each of the plurality of first slits and extend linearly to reach another side different from the said side, the closing member has a rectangular plate-shaped base material on the other end in the thickness direction of the plate, and has a plurality of protrusions protruding from the base material, each of the plurality of protrusions being rod-shaped formed in the portion surrounded by the first slits and the second slits, and each of the plurality of protrusions being individually deformable in three dimensions and can be cut by hand.

[0012] The closing member for solving the above problems is a closing member that is housed in the gap between the inner surface of a through hole provided in a building wall and the outer surface of a through member inserted into the through hole, thereby closing the gap. The closing member is in the shape of a compressible plate, and at one end of the closing member in the thickness direction, the tip surfaces of a plurality of protrusions that protrude in the thickness direction from the base material on the other end in the thickness direction are arranged on the same plane, each of the plurality of protrusions has the tip surface side as a free end and is polygonal prism-shaped, and each of the plurality of protrusions is individually deformable in three dimensions.

[0013] With respect to the closing member, the length of each of the plurality of protrusions in the thickness direction is greater than or equal to the length of the base material in the thickness direction, and may be longer than the length of any side forming the tip surface of the protrusion.

[0014] A through-hole closing structure to solve the above problems is a through-hole closing structure in which a closing member having thermal expansion properties is housed in the gap between the inner surface of a through-hole provided in a building wall and the outer surface of a through-member inserted through the through-hole, thereby closing the gap, wherein the closing member is a compressible plate shape, the closing member has a plurality of slits cut from one end to the other in the thickness direction of the closing member, the closing member has a plate-shaped base material on the other end in the thickness direction of the closing member and a plurality of protrusions protruding from the base material, and each of the plurality of protrusions is surrounded by the plurality of slits The gist of the invention is that the formed rod shape is individually deformable in three dimensions, the length of the protrusion in the thickness direction of the plate is longer than the required length of fire-resistant material filling from the wall surface which is determined as the required length for the through-hole formed in the fire-resistant partition wall which serves as the building wall, each of the plurality of protrusions that contact the outer surface of the through-hole is deformed in conjunction with contact with the outer surface of the through-hole, a portion of the plurality of protrusions is cut off, and the closing auxiliary member formed by the cut is inserted into the through-hole in a state in which it is filled in the void formed between the deformed protrusions.

[0015] In a through-hole closing structure, the closing member may have thermal expansion properties that allow it to expand due to heat. The gist of the through-hole closing structure for solving the above problems is that a closing member having thermal expansion properties is housed in the gap between the inner surface of a through-hole provided in a building wall and the outer surface of a through-member inserted through the through-hole, thereby closing the gap, wherein the closing member is a compressible plate shape, and the closing member has a plurality of slits cut from one end to the other in the thickness direction of the closing member, and the closing member has a plate-shaped base material on the other end in the thickness direction and a plurality of protrusions protruding from the base material, each of the plurality of protrusions is a rod shape formed surrounded by the plurality of slits and is individually deformable in three dimensions, each of the plurality of protrusions that contacts the outer surface of the through-member deforms in conjunction with contact with the outer surface of the through-member, and of the deformed protrusions, the protrusions facing the wall surface from the through-hole have their tip cut along the outer surface of the through-member.

[0016] A method for closing a through-hole to solve the above problems is a method for closing a through-hole by housing a closing member in the gap between the inner surface of a through-hole provided in a building wall and the outer surface of a through-member inserted into the through-hole, wherein the closing member is a compressible plate shape, and the closing member has a plurality of slits cut from one end to the other in the thickness direction of the closing member, and the closing member has a plate-shaped base material on the other end in the thickness direction and a plurality of protrusions protruding from the base material, each of the plurality of protrusions is a rod shape formed by being surrounded by the plurality of slits, and by housing the closing member in the gap, each of the plurality of protrusions that come into contact with the outer surface of the through-member is deformed in conjunction with the contact with the outer surface of the through-member, and the gist of the method is to push the protrusions that protrude from the through-hole in the building wall toward the wall surface toward the inside of the through-hole. [Effects of the Invention]

[0017] According to the present invention, it is possible to suppress the formation of gaps and to suppress a deterioration in appearance. [Brief explanation of the drawing]

[0018] [Figure 1] It is a front view showing the blocking structure of the through-hole of the embodiment. [Figure 2] It is a perspective view showing the blocking member of the embodiment. [Figure 3] It is a plan view showing the first end face of the blocking member of the embodiment. [Figure 4] It is a plan view showing the second end face of the blocking member of the embodiment. [Figure 5] It is a side view showing the first short side face of the blocking member of the embodiment. [Figure 6] It is a side view showing the second long side face of the blocking member of the embodiment. [Figure 7] It is a perspective view showing the method for blocking the through-hole. [Figure 8] It is a plan view showing the deformation of the blocking member. [Figure 9] It is a plan view showing the blocking member after cutting the press-contact protrusion. [Figure 10] It is a front view showing the blocking member after cutting. [Figure 11] It is a front view showing the blocking structure of the through-hole. [Figure 12] It is a perspective view showing a blocking member of another example. [Figure 13] It is a plan view showing a part of the blocking member shown in FIG. 12 [Figure 14] It is a side view showing the second long side face of the blocking member shown in FIG. 12 [Figure 15] It is a side view showing the first short side face of the blocking member shown in FIG. 12 [Figure 16] It is a plan view showing a part of the blocking member of the embodiment.

Mode for Carrying Out the Invention

[0019] Hereinafter, an embodiment in which a blocking member, a blocking structure of a through-hole, and a method for blocking a through-hole are embodied will be described with reference to FIGS. 1 to 11. [[ID=…]] [[ID=…]]<Building wall>[[ID=…]] As shown in Figure 1, a through-hole Wa is formed in the fire compartment wall W, which is part of the building wall. The view of the fire compartment wall W from the front side is considered a front view. In the front view of the fire compartment wall W, the through-hole Wa is a horizontally elongated rectangle. In the front view of the fire compartment wall W, the longer side of the through-hole Wa extends horizontally, and the shorter side extends vertically. The through-hole Wa penetrates the fire compartment wall W in the wall thickness direction. The fire compartment wall W is made of concrete. A through-hole member 11 is inserted through the through-hole Wa.

[0020] <Through-hole member> The through member 11 is elongated. The through member 11 is formed by multiple pipes 11b. The through member 11 comprises multiple types of pipes 11b with different outer and inner diameters. All of the multiple pipes 11b forming the through member 11 extend in the same direction. The longitudinal direction of the through member 11 is the direction in which the pipes 11b extend. The outer surface 11a of the through member 11 is formed by the outer surfaces of the multiple pipes 11b. The outer surface 11a of the through member 11 is uneven. The pipes 11b are made of flexible conduit made of synthetic resin, steel conduit, etc.

[0021] <Blocking structure for through holes> The closure structure for the through-hole Wa is formed by housing multiple closure members 30 having thermal expansion properties in the gap between the inner surface of the through-hole Wa provided in the fire-resistant partition wall W and the outer surface 11a of the through-hole member 11 inserted through the through-hole Wa. In the closure structure for the through-hole Wa, the gap is closed by the multiple closure members 30 housed in the gap.

[0022] In the closure structure of the through-hole Wa, a support member 20 is inserted through the through-hole Wa. As shown in Figure 7, the support member 20 is a long ladder-like structure. The support member 20 comprises a pair of long members 20a and a plurality of erecting members 20b spanning the pair of long members 20a. The pair of long members 20a are separated laterally across the through-hole Wa. The pair of long members 20a are inserted through the through-hole Wa so as to penetrate the fire compartment wall W in the wall thickness direction. The erecting members 20b are not located inside the through-hole Wa. The erecting members 20b are located outside both sides of the fire compartment wall W in the wall thickness direction. The through-hole member 11 is supported from below by the plurality of erecting members 20b. Therefore, the through-hole member 11 is not supported from below by the erecting members 20b inside the through-hole Wa.

[0023] <Blocking component> As shown in Figures 2 to 6, the closure member 30 is in the shape of a rectangular plate. The closure member 30 is a compressible plate. The closure member 30 comprises a rectangular plate-shaped base material 41 and a plurality of protrusions 42 protruding from the base material 41. A sheet material 50 is attached to the closure member 30. The sheet material 50 is shown only in Figure 2. In Figures 3 to 6, the sheet material 50 is omitted.

[0024] The sealing member 30 is a foam having thermal expansion properties. The sealing member 30 is a foam in which a thermally expandable material is uniformly dispersed in a base material. The sealing member 30 is obtained by foaming only the foaming agent in a base material in which a thermally expandable material and a foaming agent are kneaded into the base material. An example of a thermally expandable material is expanded graphite. An example of a base material is a polymer. A specific example of a polymer is synthetic rubber. Examples of synthetic rubbers include chloroprene rubber, ethylene propylene diene rubber (EPDM), natural rubber (NR), synthetic natural rubber (IR), isoprene rubber, butadiene rubber (BR), styrene butadiene rubber (SBR), butyl rubber (IIR), and nitrile rubber (NBR).

[0025] The foaming start temperature of the foaming agent is lower than the foaming start temperature of the thermally expandable material. One example of a method for manufacturing the closure member 30 is to prepare the base material by uniformly dispersing expanded graphite and the foaming agent in chloroprene rubber, and then to heat the base material at a temperature lower than the temperature at which expanded graphite expands so that the expanded graphite does not expand. As a result, only the foaming agent foams, and the closure member 30 is manufactured. The closure member 30 manufactured by the above method is sponge-like and has many fine bubbles formed by the foaming of the foaming agent. Many bubbles are present inside and on the surface of the closure member 30. The closure member 30 is a long plate that can be compressed and deformed. Specifically, the closure member 30 is a block that can be compressed and deformed. In addition, the closure member 30 has thermal expansion properties that allow it to expand with heat.

[0026] The closing member 30 has a first end face 31 at one end of the plate thickness direction Z and a second end face 32 at the other end. The first end face 31 is formed by arranging the tip faces 42a of a plurality of protrusions 42, which will be described later, on the same plane. Viewing the closing member 30 in the plate thickness direction Z is considered a plan view. In the plan view of the closing member 30, each of the first end face 31 and the second end face 32 is rectangular in shape. Therefore, the closing member 30 is rectangular in shape when viewed in the plate thickness direction Z. Each of the first end face 31 and the second end face 32 comprises a first long side 33a and a second long side 33b, and a first short side 34a and a second short side 34b.

[0027] Each of the first long side 33a and the second long side 33b is longer than the first short side 34a and the second short side 34b. The first long side 33a and the second long side 33b are parallel. The first long side 33a and the second long side 33b are the long sides of the rectangle formed by the first end face 31 and the second end face 32. The first short side 34a and the second short side 34b are the short sides of the rectangle formed by the first end face 31 and the second end face 32. The first short side 34a and the second short side 34b are parallel.

[0028] In the closing member 30, the direction in which the first long side 33a and the second long side 33b extend is defined as the first direction X, and the direction in which the first short side 34a and the second short side 34b extend is defined as the second direction Y. The second direction Y is perpendicular to the first direction X and the plate thickness direction Z. In a plan view of the closing member 30, the direction that intersects the first direction X diagonally is defined as the first intersecting direction F1, and the direction that intersects the first direction X diagonally and also intersects the first intersecting direction F1 is defined as the second intersecting direction F2. The first intersecting direction F1 and the second intersecting direction F2 intersect at a right angle.

[0029] The dimension of the closing member 30 in the first direction X is shorter than the length of the through hole Wa in the long side direction. The dimension of the closing member 30 in the second direction Y is the same as or approximately the same as the dimension of the fire compartment wall W in the wall thickness direction. The dimension of the closing member 30 in the plate thickness direction Z is shorter than the length of the through hole Wa in the short side direction.

[0030] The closing member 30 has a first short side surface 37a on one of its end faces in the first direction X, and a second short side surface 37b on the other end. Figure 5 shows the first short side surface 37a. The second short side surface 37b is shown in Figure 2 and appears symmetrically to the first short side surface 37a, so its illustration as a front view is omitted. Each of the first short side surface 37a and the second short side surface 37b is a rectangular shape when viewed from the first direction X. Each of the first short side surface 37a and the second short side surface 37b is a rectangular shape with its long side extending in the second direction Y and its short side extending in the plate thickness direction Z.

[0031] The closing member 30 has a first long side surface 38a on one of its end faces in the second direction Y, and a second long side surface 38b on the other end face. Figure 6 shows the first long side surface 38a. The second long side surface 38b is shown in Figure 2 and appears symmetrically to the first long side surface 38a, so its illustration as a front view is omitted. Each of the first long side surface 38a and the second long side surface 38b is a rectangular shape. Each of the first long side surface 38a and the second long side surface 38b is a rectangular shape with its long side extending in the first direction X and its short side extending in the plate thickness direction Z. The first short side surface 37a, the second short side surface 37b, the first long side surface 38a, and the second long side surface 38b are surfaces that surround the first end face 31 and the second end face 32.

[0032] The closing member 30 is provided with a plurality of slits 35. Each of the plurality of slits 35 is cut from one end to the other in the thickness direction Z of the closing member 30. The depth of the slits 35 in the thickness direction Z is the same for all of the slits 35. The closing member 30 is provided with a rectangular plate-shaped base material 41 on the other end in the thickness direction Z.

[0033] The slit 35 is formed between adjacent protrusions 42 in any of the first direction X, the second direction Y, the first intersecting direction F1, and the second intersecting direction F2. The slit 35 is a cut formed in the rectangular plate-shaped foam. Therefore, even with the slit 35 formed, the closing member 30 is rectangular in shape. Thus, the first end face 31 and the second end face 32 are each rectangular in shape when viewed from above.

[0034] The multiple slits 35 include multiple first slits 351 extending in a first intersecting direction F1 when viewed from above, and multiple second slits 352 extending in a second intersecting direction F2 when viewed from above. When viewed from above, the first slits 351 and the second slits 352 are perpendicular to each other.

[0035] Multiple first slits 351 are parallel to each other. Multiple first slits 351 are formed at equal intervals in the first direction X and the second direction Y. The spacing of the first slits 351 in the first direction X is set to a value within the range of 7 mm to 10 mm. Each of the multiple first slits 351 comprises a first end 351a and a second end 351b. Some of the multiple first slits 351 have a first end 351a located on the first long side surface 38a and a second end 351b located on the second long side surface 38b. Some of the first slits 351 have a first end 351a located on the first long side surface 38a and a second end 351b located on the second short side surface 37b. Some of the first slits 351 have a first end 351a located on the first short side surface 37a and a second end 351b located on the second long side surface 38b. Therefore, the first short side 37a, the second short side 37b, the first long side 38a, and the second long side 38b are cut out by the first slit 351. Thus, each of the multiple first slits 351 intersects diagonally with one of the four sides of the quadrilateral at the first end face 31 and extends linearly until it reaches another side different from that one side.

[0036] Multiple second slits 352 are parallel to each other. Multiple second slits 352 are formed at equal intervals in the first direction X and the second direction Y. The spacing of the second slits 352 in the second direction Y is set to a value in the range of 7 mm to 10 mm. Each of the multiple second slits 352 has a first end 352a and a second end 352b. Some of the multiple second slits 352 have the first end 352a located on the first long side surface 38a and the second end 352b located on the second long side surface 38b. Some of the second slits 352 have the first end 352a located on the first long side surface 38a and the second end 352b located on the first short side surface 37a. Some of the second slits 352 have the first end 352a located on the second short side surface 37b and the second end 352b located on the second long side surface 38b. Therefore, the first short side 37a, the second short side 37b, the first long side 38a, and the second long side 38b are cut out by the second slit 352. Thus, each of the multiple second slits 352 intersects diagonally with one of the four sides of the quadrilateral at the first end face 31 and extends linearly to reach another side different from that one side.

[0037] On the first long side surface 38a, the first end 351a of the first slit 351 and the first end 352a of the second slit 352 are separated in the first direction X. On the second long side surface 38b, the second end 351b of the first slit 351 and the second end 352b of the second slit 352 are separated in the first direction X. On the first short side surface 37a, the first end 351a of the first slit 351 and the second end 352b of the second slit 352 are separated in the second direction Y. On the second short side surface 37b, the second end 351b of the first slit 351 and the first end 352a of the second slit 352 are separated in the second direction Y.

[0038] The slit 35 is a cut formed in the rectangular plate-shaped foam. Therefore, even though the slit 35 is formed, the first short side 37a, the second short side 37b, the first long side 38a, and the second long side 38b are each rectangular plate-shaped.

[0039] In the closing member 30, the length of the base material 41 in the thickness direction Z is at least 1 / 4 of the length of the closing member 30 in the thickness direction Z. If the length of the base material 41 in the thickness direction Z is 1 / 4 of the length of the closing member 30 in the thickness direction Z, the length of the protrusion 42 in the thickness direction Z is 3 / 4 of the length of the closing member 30 in the thickness direction Z. If the length of the base material 41 in the thickness direction Z is longer than 1 / 4 of the length of the closing member 30 in the thickness direction Z, the length of the protrusion 42 in the thickness direction Z is shorter than 3 / 4 of the length of the closing member 30 in the thickness direction Z.

[0040] Furthermore, in the closing member 30, the length of each of the multiple protrusions 42 in the thickness direction Z is greater than or equal to the length of the base material 41 in the thickness direction Z, and is longer than the length of any side forming the tip surface 42a.

[0041] Specifically, the length of the projection 42 in the plate thickness direction Z is set as follows. In the through-hole Wa closing structure, the through-hole Wa has a required filling length of fire-resistant material set as the required length from the wall surface. The closing member 30 is a fire-resistant material with thermal expansion properties. The length of the projection 42 in the plate thickness direction Z is set to be greater than or equal to the above required filling length. Therefore, when the projection 42 is cut from the base end, the length of the cut projection 42 in the plate thickness direction Z becomes equal to the required filling length.

[0042] The multiple protrusions 42 include a first protrusion 44, a second protrusion 45, and a third protrusion 46. The cross-sectional shapes of the first protrusion 44, the second protrusion 45, and the third protrusion 46 are different. The cross-sectional shape of the protrusion 42 is perpendicular to the plate thickness direction Z, and is the shape in the cross-section in the first direction X and the second direction Y. Each of the multiple protrusions 42 can be cut by hand.

[0043] The first projection 44 protrudes from the base material 41 in the thickness direction Z in the shape of a rectangular prism, which is one of the polygonal prism shapes. The cross-sectional shape of the first projection 44 is square. The first projection 44 has the same cross-sectional shape regardless of its position in the thickness direction Z. Therefore, each of the multiple first projections 44 has the same cross-sectional shape continuously in the thickness direction Z. The tip surface 42a of the first projection 44 is square.

[0044] The second projection 45 protrudes from the base material 41 in the thickness direction Z in a triangular prism shape, which is one of the polygonal prism shapes. The cross-sectional shape of the second projection 45 is triangular. The second projection 45 has the same cross-sectional shape regardless of its position in the thickness direction Z. Therefore, each of the multiple second projections 45 has the same cross-sectional shape continuously in the thickness direction Z.

[0045] The third projection 46 protrudes from the base material 41 in the thickness direction Z in a pentagonal prism shape, which is one of the polygonal prism shapes. The cross-sectional shape of the third projection 46 is pentagonal. The third projection 46 has the same cross-sectional shape regardless of its position in the thickness direction Z. Therefore, each of the multiple third projections 46 has the same cross-sectional shape continuously in the thickness direction Z.

[0046] The first projection 44 is rod-shaped and is surrounded by two adjacent first slits 351 and two adjacent second slits 352 in the first direction X. Each of the multiple first projections 44 is individually deformable in three dimensions. Each of the multiple first projections 44 is deformable with its tip surface 42a side as the free end. The first projection 44 is formed by being surrounded by four slits 35. The first projections 44 are arranged adjacent to each other in the first intersecting direction F1, and the first projections 44 are arranged adjacent to each other in the second intersecting direction F2. The second slits 352 are interposed between the first projections 44 that are adjacent in the first intersecting direction F1. The first slits 351 are interposed between the first projections 44 that are adjacent in the second intersecting direction F2.

[0047] At the tip surface 42a of the first projection 44, the lengths of all four sides forming the tip surface 42a are the same. The length of each side forming the tip surface 42a of the first projection 44 is shorter than the required filling length of the fire-resistant material described above. In the embodiment, the length of each side forming the tip surface 42a is set to a value within the range of 7 mm to 10 mm. The length of each side forming the tip surface 42a is the same as or slightly shorter than the spacing of the first slit 351 and the spacing of the second slit 352.

[0048] Adjacent first protrusions 44 in the first direction X are aligned with their corners facing each other in the first direction X. Adjacent first protrusions 44 in the second direction Y are aligned with their corners facing each other in the second direction Y. Adjacent first protrusions 44 in the first intersecting direction F1 are aligned with their sides facing each other. Adjacent first protrusions 44 in the second intersecting direction F2 are aligned with their sides facing each other. For one first protrusion 44, two first protrusions 44 overlap in the first direction X. In other words, multiple first protrusions 44 are arranged in a matrix on the base material 41 and are independently deformable.

[0049] The base material 41 includes first edges 41a located at both ends in a first direction X which is the longitudinal direction of the base material 41, and second edges 41b located at both ends in a second direction Y which is perpendicular to the longitudinal direction and thickness direction Z of the base material 41. One of the pair of first edges 41a is an edge along the first short side 34a, and the other of the pair of first edges 41a is an edge along the second short side 34b. One of the pair of second edges 41b is an edge along the first long side 33a, and the other of the pair of second edges 41b is an edge along the second long side 33b. The closing member 30 includes second protrusions 45 and third protrusions 46 aligned along the first edge 41a, and also includes second protrusions 45 and third protrusions 46 aligned along the second edge 41b.

[0050] Each of the multiple second protrusions 45 is rod-shaped and surrounded by a first slit 351 and a second slit 352. Each of the multiple second protrusions 45 is individually deformable in three dimensions. Each of the multiple second protrusions 45 is deformable with its tip surface 42a side as the free end. The second protrusions 45 are formed along each of the pair of first end edges 41a and along each of the pair of second end edges 41b of the base material 41.

[0051] The second projections 45 formed on a pair of first edges 41a and the second projections 45 formed on a pair of second edges 41b have the same triangular cross-sectional size, but they may be different. The tip surface 42a of the second projection 45 is triangular. On the tip surface 42a of the second projection 45, the lengths of the three sides forming the tip surface 42a are all the same. The length of each side forming the tip surface 42a of the second projection 45 is shorter than the required filling length of the fire-resistant material described above.

[0052] Each of the second projections 45 formed on a pair of first edges 41a is adjacent to a first projection 44 in the first direction X. The first projections 44 and second projections 45 adjacent in the first direction X are aligned with their corners facing each other in the first direction X. Each of the second projections 45 formed on a pair of second edges 41b is adjacent to a first projection 44 in the second direction Y. The first projections 44 and second projections 45 adjacent in the second direction Y are aligned with their corners facing each other in the first direction X.

[0053] Each of the multiple third protrusions 46 is rod-shaped and surrounded by two adjacent first slits 351 in the first direction X and two adjacent second slits 352 in the first direction X. Each of the multiple third protrusions 46 is individually deformable in three dimensions. Each of the multiple third protrusions 46 is deformable with its tip surface 42a side as the free end. The third protrusions 46 are formed along a pair of first end edges 41a and along a pair of second end edges 41b of the base material 41.

[0054] The third projections 46 formed along a pair of first edges 41a and the third projections 46 formed along a pair of second edges 41b have the same size pentagon in cross-section, but may be different. The tip surface 42a of the third projection 46 is pentagonal. On the tip surface 42a of the third projection 46, the lengths of the five sides forming the tip surface 42a are shorter than the required filling length.

[0055] Each of the third projections 46 formed on a pair of first edges 41a is adjacent to a first projection 44 in a first direction X. The first projections 44 and third projections 46 adjacent in the first direction X are aligned with their corners facing each other in the first direction X. Each of the third projections 46 formed on a pair of second edges 41b is adjacent to a first projection 44 in a second direction Y. The first projections 44 and third projections 46 adjacent in the second direction Y are aligned with their corners facing each other in the second direction Y.

[0056] The second protrusions 45 and third protrusions 46 formed along a pair of first edges 41a are formed alternately in the second direction Y. The second protrusions 45 and third protrusions 46 formed along a pair of second edges 41b are formed alternately in the first direction X.

[0057] Therefore, in the closing member 30, the protrusions 42 aligned along the first edge 41a of the base material 41 are two types of protrusions 42 with different cross-sectional shapes. Also, the protrusions 42 aligned along the second edge 41b of the base material 41 are two types of protrusions 42 with different cross-sectional shapes. Furthermore, the first protrusion 44 among the multiple protrusions 42 has a different cross-sectional shape from the second protrusions 45 and the third protrusions 46 aligned along the first edge 41a and the second edge 41b, respectively.

[0058] Each of the blocking member 30, and consequently each of the multiple protrusions 42, possesses a reaction force that attempts to return to its original shape from a compressed and deformed state. Furthermore, each of the multiple protrusions 42 can be cut by hand. Naturally, each of the multiple protrusions 42 can also be cut with a manual tool such as scissors. Therefore, each of the multiple protrusions 42 possesses both the flexibility to deform in three dimensions and the softness to facilitate cutting.

[0059] <Sheet material> As shown in Figure 2, the sheet material 50 is attached to the entire first end face 31 and the entire second end face 32. The sheet material 50 is made of nonwoven fabric. The sheet material 50 attached to the first end face 31 is divided along the slit 35. Therefore, the sheet material 50 is attached independently to each protrusion 42. In other words, the sheet material 50 is attached to each of the tip surfaces 42a of the multiple protrusions 42. The slit 35 is formed by attaching sheet material 50 of the same size as the first end face 31 and the second end face 32 of the closing member 30 to the first end face 31 and the second end face 32 before forming the slit 35, and then making cuts in the sheet material 50 and the closing member 30.

[0060] <Method for forming a closure structure for through holes> Next, a method for forming the closing structure of the through-hole Wa will be described. Note that the sheet material 50 is omitted in Figures 8 and 9.

[0061] First, as shown in Figure 7, a through-hole Wa is formed in the fire compartment wall W for the through-hole member 11 to pass through. Next, a support member 20 is placed in the through-hole Wa. Then, the through-hole member 11 is supported by multiple erection members 20b of the support member 20, and the through-hole member 11 is passed through the fire compartment wall W.

[0062] Next, multiple closing members 30 are housed in the gap K between the inner surface of the through-hole Wa and the outer surface 11a of the through-hole member 11. At this time, as shown in Figure 1, the closing members 30 are housed in the gap K of the through-hole Wa such that the first direction X of the closing member 30 extends laterally and the plate thickness direction Z extends vertically. Only one closing member 30 is housed in the wall thickness direction of the fire compartment wall W. Since the dimension of the closing member 30 in the second direction Y is the same as or approximately the same as the dimension in the wall thickness direction of the fire compartment wall W, both ends of the closing member 30 in the second direction Y are located on the same plane as the wall surface of the fire compartment wall W.

[0063] The closing members 30 are stacked from the bottom upwards of the through-hole Wa. The closing members 30 are also arranged horizontally across the through-hole Wa. In Figure 1, a gap shorter than the dimension of the closing member 30 in the first direction X may be formed between the long member 20a and the through-hole member 11. In this case, the closing member 30 is cut to be slightly longer than the dimension of the gap, and the cut closing member 30 is packed into the gap. At this time, a different type of closing member 30 with a shorter dimension in the first direction X than that of the embodiment may be prepared in advance. Then, the different type of closing member 30 may be packed into the gap shorter than the dimension of the closing member 30 in the first direction X.

[0064] As shown in Figure 11, two of the multiple closing members 30, one positioned above the through member 11 and the other positioned below the through member 11, are pressed against the outer surface 11a of each pipe 11b. The closing member 30 pressed against the through member 11 from above is positioned with its first end face 31 facing downwards. The closing member 30 pressed against the through member 11 from below is positioned with its first end face 31 facing upwards. At this time, the lower ends of each of the multiple pipes 11b are at the same height in the first direction X. Therefore, the closing member 30 pressed against the through member 11 from below is recessed so that it is at the same height in the first direction X. On the other hand, the upper ends of the multiple pipes 11b are positioned in an uneven manner in the first direction X. Therefore, the closing member 30 pressed against the through member 11 from above is recessed in an uneven manner in the first direction X.

[0065] Of the multiple protrusions 42 of the closing member 30, the protrusion 42 that is pressed against the outer surface 11a of the through member 11 is described as a pressure-contacting protrusion. As shown in Figures 8, 9, and 10, the pressure-contacting protrusion is a protrusion 42 near the center of the closing member 30 in the first direction X. Note that the position of pressure contact of the closing member 30 with respect to the through member 11 may change depending on the construction site and construction method, so the position where the pressure-contacting protrusion is formed is not limited to near the center of the first direction X, but may be on one side of the first direction X or at any other location. The pressure-contacting protrusion exists throughout the entire second direction Y of the closing member 30.

[0066] Then, when the closing member 30 is inserted into the gap K and pressed against the penetrating member 11, as shown in Figure 8, among the multiple pressure-contacting protrusions, the pressure-contacting protrusions along the second edge 41b deform toward the front and back sides of the fire compartment wall W. Therefore, the pressure-contacting protrusions lined up along the second edge 41b and the pressure-contacting protrusions close to the second edge 41b protrude toward the front and back sides of the wall upon contact with the penetrating member 11. On the other hand, among the multiple pressure-contacting protrusions, the pressure-contacting protrusions closer to the center of the second direction Y have other protrusions 42 adjacent to them in the first direction X, the second direction Y, the first intersecting direction F1, and the second intersecting direction F2. Therefore, deformation in the first direction X, the second direction Y, the first intersecting direction F1, and the second intersecting direction F2 is easily suppressed for the pressure-contacting protrusions close to the center of the second direction Y. Therefore, among the pressure-welded protrusions, those closer to the center in the second direction Y are more prone to deformation or bending only in the plate thickness direction Z.

[0067] Then, as shown in Figures 10 and 11, the length in the plate thickness direction Z of the deformed pressure-welded protrusions that protrude towards the front side of the wall is shortened by cutting the tip surface 42a side. Here, the pressure-welded protrusion that is cut is a protrusion 42 that, even after being cut, has another protrusion 42 located on the back side of the wall.

[0068] The length of the pressure-welded protrusion in the plate thickness direction Z is adjusted by manually cutting the protrusion. The pressure-welded protrusion can be easily cut by hand. Alternatively, the length adjustment of the pressure-welded protrusion may be performed by cutting with a manual tool such as scissors.

[0069] The length of the pressure-welded protrusion after cutting is such that it is pressed against the outer surface 11a of the through member 11 with an appropriate reaction force, and does not protrude outwards from the front side of the fire compartment wall W even if it deforms. As a result, of the protrusions 42 pressed against the through member 11, the protrusions 42 facing outwards from the through hole Wa are cut at the tip along the outer surface 11a of the through member 11. As a result, as shown in Figure 9, the multiple protrusions 42 facing outwards from the through hole Wa are substantially flush with the wall surface of the fire compartment wall W. Note that the protrusions 42 that protrude outwards from the back side of the fire compartment wall W may be cut from the back side of the fire compartment wall W, or they may be left protruding without being cut. In addition, in the closing member 30, if the protrusions 42 on the back side of the fire compartment wall W do not reach the back side of the wall, those protrusions 42 on the back side of the wall are located inside the through hole Wa. In this case, the protrusions 42 do not protrude outwards from the back side of the wall, so the appearance is not diminished. Therefore, the protruding portion 42 on the back side of the wall does not require any processing such as cutting.

[0070] Furthermore, among the pressure-welded protrusions on the wall surface, those that protrude only slightly towards the wall surface, or those that protrude towards the wall surface even after being cut, are pushed back towards the wall surface in the through-hole Wa by hand. As a result, there are virtually no pressure-welded protrusions protruding towards the wall surface. Alternatively, all of the pressure-welded protrusions on the wall surface that protrude towards the wall surface may be pushed back towards the wall surface in the through-hole Wa without being cut.

[0071] The cut pieces obtained by cutting the pressure-welded protrusions become the closure auxiliary members 43. The closure auxiliary members 43 fill the minute gaps that cannot be closed by the closure members 30. In other words, the closure auxiliary members 43 fill the spaces between the deformed pressure-welded protrusions. These minute gaps are the gaps formed between the pipes 11b and the gaps formed between the first protrusions 44.

[0072] As a result, the gap K between the inner surface of the through-hole Wa and the outer surface 11a of the through-member 11 is closed by the multiple closing members 30 and closing auxiliary members 43. The closing members 30 also press against the outer surface of the long member 20a of the support member 20. Any minute gaps that cannot be closed by the closing auxiliary members 43 are filled with fire-resistant putty 49, as shown by the dot hatching in Figure 11. As a result, the closing structure for the through-hole Wa in the fire-resistant partition wall W is completed.

[0073] <Operation of the Embodiment> Each of the multiple closure members 30 arranged side by side in the horizontal direction is compressed in the first direction X, and a reaction force is generated that attempts to return to its original shape from the compressed state. Due to this reaction force, adjacent closure members 30 in the horizontal direction are pressed against each other, closure members 30 and the long members 20a, and closure members 30 and the inner surface of the fire compartment wall W. Similarly, each of the multiple closure members 30 arranged side by side in the vertical direction is compressed in the plate thickness direction Z, and a reaction force is generated that attempts to return to its original shape from the compressed state. Due to this reaction force, adjacent closure members 30 in the vertical direction are pressed against each other, closure members 30 and the penetrating members 11, and closure members 30 and the inner surface of the fire compartment wall W.

[0074] Each of the multiple protrusions 42 protrudes from the base material 41 in a polygonal prism shape. The multiple protrusions 42 are elongated rods arranged in a matrix on the base material 41. Therefore, each of the multiple pressure-contacting protrusions deforms individually to match the shape of the outer surface 11a of the through-member 11. The smaller the cross-sectional shape of the pressure-contacting protrusion, the easier it is to deform to match the outer surface 11a of the through-member 11. The length of each side of the tip surface 42a of the first protrusion 44 is very short, between 7 mm and 10 mm. The tip surfaces 42a of the second protrusion 45 and the third protrusion 46 are also very short. Therefore, each of the multiple protrusions 42 deforms to conform to the shape of the outer surface 11a of the through-member 11, even if it is uneven or has a complex shape.

[0075] Furthermore, a reaction force generated by other closing members 30 that overlap in the vertical direction acts on the pressure-contacting protrusion. In addition, a biasing force generated by another adjacent protrusion 42 acts on the pressure-contacting protrusion. Due to this reaction force and biasing force, the pressure-contacting protrusion is pressed against the outer surface 11a of the through member 11.

[0076] The reaction force and biasing force generated at the pressure-welded protrusions act as forces that press the pressure-welded protrusions against the outer surface 11a of the through-member 11. As a result, each of the pressure-welded protrusions deforms individually to match the shape of the outer surface 11a of the through-member 11. The pressure-welded protrusions deform arbitrarily in three dimensions. In addition, the sheet material 50 at the tip of the non-deforming protrusion 42 reduces the frictional force generated between it and the other closing members 30.

[0077] Furthermore, as the pressure-welded protrusions deform in three dimensions, the spacing between adjacent pressure-welded protrusions in the first direction X and the second direction Y widens. As a result, areas where the slit 35 widens occur in the closing member 30.

[0078] In the closing member 30, multiple protrusions 42 overlap each of the pressure-contact protrusions in the second direction Y, and other protrusions 42 overlap from both sides in the first direction X. In other words, even if the pressure-contact protrusions deform in any direction, the slit 35 does not extend in a straight line in the second direction Y. Therefore, when viewing the closing structure from the front side of the fire compartment wall W, there are always protrusions 42 in the line of sight in the second direction Y. Consequently, the back side of the fire compartment wall W cannot be seen from the front side through the widened slit 35.

[0079] In such a building, if a fire occurs on the front side of one of the fire compartment walls W, the gaps between adjacent protrusions 42 in the first direction X are prevented from becoming pathways for flames, smoke, toxic gases, and heat.

[0080] Suppose the through member 11 burns. In this case, the heat generated from the through member 11 will not immediately burn out the sealing member 30. The sealing member 30 will expand due to the heat. Then, the expanded sealing member 30 will seal and close the space between the through member 11 and the through hole Wa. In other words, the gap between the outer surface 11a of the through member 11 and the inner surface of the through hole Wa will not become a path for flames, smoke, toxic gases, and heat.

[0081] According to the above embodiment, the following effects can be obtained. (1) In the closing member 30, the multiple protrusions 42 are formed in the portion surrounded by the first slit 351 extending in the first intersecting direction F1 and the second slit 352 extending in the second intersecting direction F2. Therefore, each protrusion 42 is superimposed on by other protrusions 42 in the second direction Y, and also by other protrusions 42 from the first direction X. In the closing structure of the through hole Wa, even if the slit 35 widens due to the deformation of the pressure-contacted protrusions in three dimensions by the pressure contact of the closing member 30 with the through member 11, another protrusion 42 is located at the end of the widened slit 35 in the second direction Y. Therefore, the widened slit 35 does not extend in a straight line in the wall thickness direction of the fire compartment wall W. As a result, the back side of the wall cannot be seen from the front side of the wall of the fire compartment wall W. Thus, the formation of a gap that penetrates the through hole Wa in a straight line can be suppressed.

[0082] In addition, each of the multiple protrusions 42 can be easily cut by hand. Therefore, the pressure-contact protrusions that protrude toward the wall surface can be easily cut off. Thus, by using the closing member 30, the formation of gaps can be suppressed, and the deterioration of the appearance of the closing structure can be suppressed.

[0083] (2) Each of the multiple protrusions 42 can be individually deformed in three dimensions. Even if the outer surface 11a of the through member 11 is uneven, each pressure-contacting protrusion deforms individually to match the shape of the outer surface 11a. Therefore, the multiple pressure-contacting protrusions deform flexibly to match the shape of the outer surface 11a of the through member 11. Thus, the multiple pressure-contacting protrusions make it difficult for a gap to form between the outer surface 11a of the through member 11 and the closing member 30.

[0084] (3) Each of the multiple protrusions 42 can be easily cut by hand. Therefore, the length of the protrusions 42 in the plate thickness direction Z can be easily adjusted. Thus, the work of adjusting the length of the pressure-welded protrusions to a dimension suitable for pressure-welding to the through member 11 can be easily performed.

[0085] (4) Each of the multiple protrusions 42 can be easily cut by hand. Therefore, the pressure-contact protrusions that protrude toward the wall surface can be easily cut off. In addition, a portion of the cut pressure-contact protrusions can be used as a closing auxiliary member 43 to fill the gaps between the protrusions 42 or between the closing members 30. Thus, the gaps can be eliminated.

[0086] (5) Each of the multiple protrusions 42 has the same cross-sectional area in the thickness direction Z. Therefore, each of the multiple protrusions 42 can be cut by hand in the same way at any position in the thickness direction Z.

[0087] (6) The protrusion 42 on the wall surface is formed by a second protrusion 45 and a third protrusion 46, which have smaller cross-sectional areas than the first protrusion 44. For this reason, the second protrusion 45 and the third protrusion 46 are easier to cut than the first protrusion 44. Therefore, it is easier to adjust the length of the protrusion 42 that sticks out on the wall surface. Also, the second protrusion 45 and the third protrusion 46 are easier to deform than the first protrusion 44. In other words, the second protrusion 45 and the third protrusion 46, which are aligned along the first edge 41a and the second edge 41b, have smaller cross-sectional areas than the first protrusion 44 surrounded by the second protrusion 45 and the third protrusion 46. The second protrusion 45 and the third protrusion 46, which are aligned along the first edge 41a and the second edge 41b, are thinner than the first protrusion 44 surrounded by the second protrusion 45 and the third protrusion 46. Therefore, the second protrusion 45 and the third protrusion 46 are easier to deform or cut by hand compared to the first protrusion 44. As a result, the pressure-contact protrusions that protrude from the front side of the fire compartment wall W are easily deformed toward the back side of the wall. Consequently, by forming the protrusion 42 on the front side of the wall with the second protrusion 45 and the third protrusion 46, it is easier to form a closed structure for the through hole Wa.

[0088] (7) The protrusions 42 aligned along the second edge 41b on the front side of the wall are formed by the second protrusion 45 and the third protrusion 46. Therefore, when cutting the protrusions 42, it is possible to cut a protrusion 42 that is suitable for the size of the gap. Thus, compared to the case where the pressure-contact protrusions on the front side of the wall are formed only by the first protrusion 44, it is easier to form a closing structure for the through hole Wa.

[0089] (8) The multiple protrusions 42 are formed by forming multiple first slits 351 and multiple second slits 352 in the foam. Therefore, the closing member 30 having multiple protrusions 42 can be easily formed.

[0090] (9) The length of each of the multiple protrusions 42 in the thickness direction Z is greater than or equal to the length of the base material 41 in the thickness direction Z, and is longer than the length of any side forming the tip surface 42a of the protrusion 42. For this reason, the multiple protrusions 42 are elongated rod-shaped protrusions from the base material 41. Consequently, the protrusions 42 can be easily cut by hand.

[0091] (10) The length of the projection 42 in the thickness direction Z is approximately 3 / 4 of the length of the closing member 30 in the thickness direction Z. The length of the projection 42 in the thickness direction Z is set to be greater than or equal to the required filling length of the fire-resistant material determined from the wall surface. Therefore, if the projection 42 is cut from its base end, the cut projection 42 will have the required filling length of the fire-resistant material. Thus, if the cut projection 42 is positioned from the wall surface toward the back of the wall, and the length of the cut projection 42 in the thickness direction Z is aligned with the wall thickness direction of the fire compartment wall W and inserted into the through-hole Wa to form a closing structure for the through-hole Wa, the cut projection 42 will ensure the required filling length of the fire-resistant material determined from the wall surface.

[0092] (11) The length of each of the multiple protrusions 42 in the thickness direction Z is longer than the length of the base material 41 in the thickness direction Z. The longer the length of the protrusion 42 in the thickness direction Z is than that of the base material 41, the easier the protrusion 42 is to deform in three dimensions, and therefore it is easier for it to follow the shape of the outer surface 11a of the through member 11. This makes it possible to suppress the formation of a gap between the outer surface 11a of the through member 11 and the deformed protrusion 42.

[0093] (12) In the closing member 30, the multiple protrusions 42 are formed in the portion surrounded by the first slit 351 extending in the first intersecting direction F1 and the second slit 352 extending in the second intersecting direction F2. Therefore, each protrusion 42 is superimposed on another protrusion 42 in the second direction Y, and also superimposed on another protrusion 42 from the first direction X. In the closing structure of the through hole Wa, even if the slit 35 widens due to the deformation of the pressure-contacted protrusion in three dimensions by the pressure contact of the closing member 30 with the through member 11, another protrusion 42 is located at the end of the widened slit 35 in the second direction Y. Therefore, the widened slit 35 does not extend in a straight line in the wall thickness direction of the fire compartment wall W. As a result, the back side of the wall cannot be seen from the front side of the wall of the fire compartment wall W. Thus, the formation of a gap that penetrates the through hole Wa in a straight line can be suppressed.

[0094] In addition, each of the multiple protrusions 42 can be easily cut by hand. Therefore, the pressure-contact protrusions that protrude toward the wall surface can be easily cut off. Thus, by using the closing member 30, the formation of gaps can be suppressed, and the deterioration of the appearance of the closing structure can be suppressed.

[0095] The first end face 31 of such a closing member 30 is formed by gathering the tip faces 42a of all the protruding portions 42. Therefore, even if the closing member 30 has a shape in which multiple protruding portions 42 protrude from the base material 41, it has a flat and rectangular first end face 31. Thus, in the closing structure of the through hole Wa, the closing members 30 can be stacked vertically by the first end face 31. Furthermore, in the closing member 30 that is in pressure contact with the through member 11, the entire first end face 31 does not deform, but only the first end face 31 that is in pressure contact with the through member 11 can be individually deformed to conform to the shape of the outer surface 11a of the through member 11.

[0096] This embodiment can be implemented with the following modifications. This embodiment and the following modifications can be combined with each other to the extent that they do not contradict each other technically. ○ As shown in Figure 12, on the first long side surface 38a, the first end 351a of the first slit 351 coincides with the first end 352a of the second slit 352. Also, on the second long side surface 38b, the second end 351b of the first slit 351 coincides with the second end 352b of the second slit 352. Furthermore, on the first short side surface 37a, the first end 351a of the first slit 351 coincides with the second end 352b of the second slit 352. On the second short side surface 37b, the second end 351b of the first slit 351 coincides with the first end 352a of the second slit 352.

[0097] In this configuration, the protrusion 42 consists of a first protrusion 44 with a square cross-section and a second protrusion 45 with a triangular cross-section. The second protrusion 45 is formed along the first edge 41a and the second edge 41b of the base material 41. On the first edge 41a, the first protrusion 44 and the second protrusion 45 are formed alternately in the first direction X. On the second edge 41b, the first protrusion 44 and the second protrusion 45 are formed alternately in the second direction Y. In other words, the closing member 30 comprises the second protrusion 45 and the first protrusion 44 aligned along the first edge 41a and the second edge 41b, and the first protrusion 44 surrounded by the protrusions 42 aligned around the periphery of the closing member 30. Therefore, in this configuration, the cross-sectional shapes of the multiple protrusions 42 provided by the closing member 30 are of two types: square and triangular.

[0098] ○ All of the multiple protrusions 42 provided by the blocking member 30 may be the same triangular prism shape. ○ The side surfaces of the closure member 30 may not be flat, such as the first short side surface 37a, the second short side surface 37b, the first long side surface 38a, and the second long side surface 38b, but may be uneven. For example, in the closure member 30 of the embodiment, the uneven surface may be made by removing the second protrusion 45 from each of the first edge 41a and the second edge 41b, leaving only the third protrusion 46. Also, in the closure member 30 shown in Figure 12, the uneven surface may be made by removing the second protrusion 45 from each of the first edge 41a and the second edge 41b, leaving only the first protrusion 44.

[0099] ○ When the sealing member 30 was packed into the gap K, the pressure-contacting protrusion that stuck out to the wall surface was cut off to form a sealing auxiliary member 43. The sealing auxiliary member 43 was then filled into the gap, but the method of filling the gap is not limited to this. For example, a sealing member 30 could be prepared specifically for filling gaps. Then, when a gap is formed, a part of the sealing member 30 specifically for filling gaps could be cut off, and the cut part of the sealing member 30 could be filled into the gap.

[0100] ○ In the pressure-contacting protrusions lined up on the front side of the wall, even if they protrude outwards on the front side of the wall, they do not need to be pushed inwards into the through-hole Wa. ○ The closure member 30 does not necessarily need to have the sheet material 50 attached to it.

[0101] ○ The sheet material 50 may be attached to only one of the first end face 31 and the second end face 32. ○ The number of first slits 351 and second slits 352 in the closing member 30 may be changed as appropriate. This changes the cross-sectional area of ​​the formed protrusion 42.

[0102] ○ The inclination angles of the first slit 351 and the second slit 352 may be changed arbitrarily, and the intersection angle between the first slit 351 and the second slit 352 may also be changed arbitrarily. ○ The spacing for forming the first slit 351 may be changed arbitrarily, and the spacing for forming the second slit 352 may also be changed arbitrarily.

[0103] ○ The depths of the multiple slits 35 in the closure member 30 do not all have to be the same; they may be different. For example, by making the depth of the first slit 351 and the depth of the second slit 352 different, the ease of deformation in the three-dimensional direction and the direction in which deformation occurs in the protruding portion 42 can be made different.

[0104] ○ The length of the projection 42 in the thickness direction Z may be shorter than the required filling length of the fire-resistant material, which is determined as the required length from the wall surface of the fire-resistant partition wall W. In this case, the depth of the slit 35 is adjusted so that the length of the projection 42 in the thickness direction Z is as described above.

[0105] ○ The length of the base material 41 in the thickness direction Z and the length of the protrusion 42 in the thickness direction Z may be the same. Alternatively, the length of the protrusion 42 in the thickness direction Z may be shorter than the length of the base material 41 in the thickness direction Z. In this case, the shorter the length of the protrusion 42 in the thickness direction Z is compared to the base material 41, the greater the elastic force of the protrusion 42. As a result, the reaction force when the protrusion 42 is compressed is increased, so that the pressure contact force of the pressure-contacting protrusion against the through member 11 can be ensured.

[0106] ○ The closure member 30 does not have a slit 35 before construction, and the slit 35 may be formed during construction by simultaneously cutting the sheet material 50 and the foam. ○ The blocking member 30 may be in the shape of a square rectangular plate or an elliptical plate. Furthermore, the blocking member 30 may be in the shape of a long plate other than a rectangle.

[0107] ○ The through-hole Wa in the fire-resistant partition wall W does not have to be rectangular; it may be circular or elliptical. If the through-hole Wa is circular, the closing member 30 is deformed into an annular shape along the outer surface 11a of the through-member 11.

[0108] ○ The closing member 30 does not need to have thermal expansion properties, as long as it is compressible and the protruding portion 42 is deformable in three dimensions. ○ The fire compartment wall W may be a wall made of gypsum board instead of concrete. The building wall may be a compartment wall that is not a fire compartment wall. In this case, the closing member 30 may not fill the entire thickness of the through hole Wa, but may be installed biased to one side, or it may be positioned biased to both sides of the wall surface, with a space formed between the closing members 30 on both wall sides. In this case, in the closing structure of the through hole Wa, the deformed protrusion 42 fits into the space.

[0109] ○ Figures 13 to 15 show multiple parts of the closure member 30 shown in Figure 12. Note that Figure 13 is enlarged compared to Figures 14 and 15 for ease of explanation. The first end face 31 shown in Figure 13, the first long side surface 38a shown in Figure 14, and the first short side surface 37a shown in Figure 15 are all surfaces of a single closure member 30. Note that the second end face 32 of the closure member 30 shown in Figure 12 is the same as the second end face 32 shown in Figure 4, and therefore is not shown. In Figure 13, only a part of the closure member 30 is represented by a solid line, while the rest is represented by a dashed line. The part represented by the solid line is the part that will be explained later. The dashed line indicates only the boundary between the solid line part (the part that will be explained later) and the dashed line part (the other part).

[0110] Each portion of the closing member 30 is polygonal prism-shaped and has multiple protrusions 42 that are compressible and deformable in three dimensions. Such portions include those indicated by member numbers 301 to 303. The portion indicated by member number 301 includes one first protrusion 44 along the first long side 33a, two second protrusions 45 adjacent to it in the first direction X, and a portion of the first protrusion 44 adjacent to it in the first intersecting direction F1, the second intersecting direction F2, and the first direction X.

[0111] Other parts include the part indicated by part number 302. The part indicated by part number 302 includes a portion of the first protrusions 44 arranged in a line in the first direction X, and a portion of the first protrusions 44 sandwiched between adjacent first protrusions 44 in the first direction X.

[0112] Furthermore, there is another part, indicated by part number 303. The part indicated by part number 303 includes a first projection 44 arranged in a row in the first direction X along the second long side 33b, a second projection 45 arranged in a row in the first direction X, and a portion of the first projection 44 sandwiched between adjacent first projections 44 in the first direction X.

[0113] ○ Figure 16 shows multiple parts of the closure member 30 described in the embodiment. In Figure 16, only a part of the closure member 30 is represented by a solid line, while the rest is represented by a dashed line. The part represented by the solid line is the part that will be described later. The dashed line indicates only the boundary between the solid line part (the part that will be described later) and the dashed line part (the other part).

[0114] Each characteristic part of the closure member 30 is polygonal prism-shaped and has multiple protrusions 42 that are compressible and deformable in three dimensions. Examples of such parts are those indicated by member numbers 401 to 404. The part indicated by member number 401 includes two second protrusions 45 adjacent to a third protrusion 46 along the first long side 33a in the first direction X, parts of two third protrusions 46 adjacent to the first direction X, a first protrusion 44 adjacent to a third protrusion 46 in the first intersecting direction F1 and the second intersecting direction F2, and parts of the first protrusions 44 adjacent to those first protrusions 44 in the first intersecting direction F1 and the second intersecting direction F2.

[0115] Other parts include the part indicated by part number 402. The part indicated by part number 402 includes four first protrusions 44 adjacent to each other in the first intersecting direction F1 and the second intersecting direction F2, and a portion of each first protrusion 44 adjacent to each first protrusion 44 in the first intersecting direction F1 and the second intersecting direction F2.

[0116] Furthermore, there is another part, indicated by part number 403. The part indicated by part number 403 includes, with respect to one first protrusion 44, two first protrusions 44 adjacent in a first intersecting direction F1, a portion of the first protrusion 44 adjacent in the first intersecting direction F1 and the second intersecting direction F2 with respect to those two first protrusions 44, two first protrusions 44 adjacent in the second intersecting direction F2 with respect to one first protrusion 44, and a portion of the first protrusion 44 adjacent in the first intersecting direction F1 and the second intersecting direction F2 with respect to those two first protrusions 44.

[0117] Another part is the part indicated by part number 404. The part indicated by part number 404 includes a first projection 44 arranged in a row in the first direction X along the second long side 33b, a second projection 45 arranged in a row in the first direction X, a third projection 46 arranged in a row in the first direction X, and a part of the first projection 44 sandwiched between adjacent first projections 44. [Explanation of symbols]

[0118] X...First direction, Y...Second direction, Z...Plate thickness direction, W...Fire compartment wall as a building wall, Wa...Through hole, 11...Through member, 11a...Outer surface, 30...Closing member, 33a...First long side, 33b...Second long side, 34a...First short side, 34b...Second short side, 35...Slit, 41...Base material, 41a...First edge, 41b...Second edge, 42...Protruding part, 42a...Tip surface, 43...Closing auxiliary member, 44...First protruding part, 45...Second protruding part, 46...Third protruding part, 351...First slit, 352...Second slit.

Claims

1. A closing member that is housed in the gap between the inner surface of a through-hole provided in a building wall and the outer surface of a through-member inserted through the through-hole, and that closes the gap, The aforementioned closing member is a plate-like shape that can be compressed and deformed. The closing member comprises a plurality of slits cut from one end to the other in the thickness direction of the closing member, The closing member has a plate-shaped base material on the other end in the thickness direction of the plate, and has a plurality of protrusions that protrude from the base material, Each of the aforementioned multiple protrusions is rod-shaped and surrounded by the multiple aforementioned slits, The closure member is characterized in that each of the plurality of protrusions is individually deformable in three dimensions and can be cut by hand.

2. Each of the aforementioned multiple protrusions has the same cross-sectional shape continuously in the plate thickness direction. The closing member has a rectangular shape when viewed in the thickness direction, and the base material comprises first edges located at both ends in the longitudinal direction of the base material, and second edges located at both ends in a second direction perpendicular to the longitudinal direction and the thickness direction. The closing member according to claim 1, wherein each of the protrusions arranged along the first edge and the protrusions arranged along the second edge of the base material includes two types of protrusions having different cross-sectional shapes.

3. The closing member according to claim 2, further comprising the plurality of protrusions having different cross-sectional shapes from each of the protrusions arranged along the first edge of the base material and the protrusions arranged along the second edge.

4. A closing member that is housed in the gap between the inner surface of a through-hole provided in a building wall and the outer surface of a through-member inserted through the through-hole, and that closes the gap, The aforementioned closing member is a plate-like shape that can be compressed and deformed. The closing member comprises a plurality of slits cut from one end to the other in the thickness direction of the closing member, Viewing the closing member in the thickness direction, the closing member is rectangular in shape, and the plurality of slits include a plurality of first slits that intersect diagonally with one of the four sides of the rectangle and extend linearly to reach another side different from the said side, and a plurality of second slits that intersect diagonally with one of the sides at an angle different from each of the plurality of first slits and extend linearly to reach another side different from the said side. The closing member has a rectangular plate-shaped base material on the other end in the thickness direction of the plate, and has a plurality of protrusions that protrude from the base material, Each of the aforementioned multiple protrusions is rod-shaped and formed in the portion surrounded by the first slit and the second slit. The closure member is characterized in that each of the plurality of protrusions is individually deformable in three dimensions and can be cut by hand.

5. A closing member that is housed in the gap between the inner surface of a through-hole provided in a building wall and the outer surface of a through-member inserted through the through-hole, and that closes the gap, The aforementioned closing member is a plate-like shape that can be compressed and deformed. At one end of the closing member in the thickness direction, the tip surfaces of multiple protrusions that project in the thickness direction from the base material on the other end are arranged on the same plane. Each of the aforementioned multiple protrusions has a free end on the tip surface side and is polygonal prism-shaped. The closure member is characterized in that each of the plurality of protrusions is individually deformable in a three-dimensional direction.

6. The closing member according to claim 5, wherein the length in the thickness direction of each of the plurality of protrusions is greater than or equal to the length in the thickness direction of the base material, and is longer than the length of any side forming the tip surface of the protrusion.

7. A through-hole closing structure in which a closing member having thermal expansion properties is housed in the gap between the inner surface of the through-hole provided in the building wall and the outer surface of a through-member inserted through the through-hole, thereby closing the gap, The aforementioned closing member is a plate-like shape that can be compressed and deformed. The closing member comprises a plurality of slits cut from one end to the other in the thickness direction of the closing member, The closing member has a plate-shaped base material on the other end in the thickness direction of the plate, and has a plurality of protrusions that protrude from the base material, Each of the aforementioned multiple protrusions is rod-shaped, surrounded by the multiple slits, and is individually deformable in three dimensions. The length of the protruding portion in the thickness direction of the plate is longer than the required length of the fire-resistant material filling from the wall surface, which is determined as the required length for the through-hole formed in the fire-resistant partition wall that serves as the building wall. Each of the multiple protrusions that contact the outer surface of the through member is deformed in conjunction with contact with the outer surface of the through member. A through-hole closing structure characterized in that some of the multiple protrusions are cut off, and the closing auxiliary member formed by the cutting is inserted into the through-hole while filling the gap formed between the deformed protrusions.

8. The blocking member has thermal expansion properties that expand due to heat, as described in claim 7 for the through-hole blocking structure.

9. A through-hole closing structure in which a closing member having thermal expansion properties is housed in the gap between the inner surface of the through-hole provided in the building wall and the outer surface of a through-member inserted through the through-hole, thereby closing the gap, The aforementioned closing member is a plate-like shape that can be compressed and deformed. The closing member comprises a plurality of slits cut from one end to the other in the thickness direction of the closing member, The closing member has a plate-shaped base material on the other end in the thickness direction of the plate, and has a plurality of protrusions that protrude from the base material, Each of the aforementioned multiple protrusions is rod-shaped, surrounded by the multiple slits, and is individually deformable in three dimensions. Each of the multiple protrusions that contact the outer surface of the through member is deformed in conjunction with contact with the outer surface of the through member. A through-hole closing structure characterized in that, of the deformed protrusions, the protrusions facing the wall surface from the through-hole are cut at the tip along the outer surface of the through-hole member.

10. A method for closing a through-hole in a building wall, comprising housing a closing member in the gap between the inner surface of the through-hole and the outer surface of a through-member inserted through the through-hole, thereby closing the gap, The aforementioned closing member is a plate-like shape that can be compressed and deformed. The closing member comprises a plurality of slits cut from one end to the other in the thickness direction of the closing member, The closing member has a plate-shaped base material on the other end in the thickness direction of the plate, and has a plurality of protrusions that protrude from the base material, Each of the aforementioned multiple protrusions is rod-shaped and surrounded by the multiple aforementioned slits, By housing the closing member in the gap, each of the multiple protrusions that contact the outer surface of the through member is deformed in conjunction with contact with the outer surface of the through member. A method for closing a through-hole, characterized by pushing the deformed protrusion that protrudes from the through-hole in the building wall toward the wall surface toward the inside of the through-hole.

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