Fire-resistant compartment penetration device and fire-resistant compartment structure

Abstract

To provide a thermal expansion material mounting tool capable of further reliably suppressing spread of a fire, and fireproof compartment penetration tool including the thermal expansion material mounting tool.SOLUTION: There is provided a thermal expansion material mounting tool 2 for installing a thermal expansion material expanding by receiving heat in a through-hole formed to penetrate the inside of a building or a compartment for partitioning the inside from the outside. The thermal expansion material mounting tool comprises a cylindrical body 4 having fire resistance and formed in a cylindrical shape so as to be insertable into the through-hole. The cylindrical body is configured to serve as an external wall, when the thermal expansion material provided inside the cylinder expands by receiving heat and primarily expands radially inward, and includes extension allowable parts 42 allowing parts of the thermal expansion material to extend to an external area radially outward the cylindrical body. The extension allowable parts are disposed at least in an adjacent part 442 adjacent to an inner part 441, at the other end side in the circumferential direction, the inner part disposed radially inward the other end in the circumferential direction of the cylindrically-shaped cylindrical body, where the thermal expansion material may be installed on the inner surface side of the adjacent part.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a thermal expansion material mounting device for providing a thermal expansion material that expands when exposed to heat in a through hole formed to penetrate a partition that separates the inside and outside or the inside of a building, and a fire-resistant partition penetration device equipped with the thermal expansion material mounting device. [Background technology]

[0002] Conventionally, a fireproof sleeve described in Patent Document 1 is known as a fireproof sleeve used in a fireproofing method for a through hole formed in a wall of a building. The fireproof sleeve includes a cylindrical sleeve body and a flange plate extending radially outward from one axial end of the sleeve body, and the sleeve body is formed by combining a pair of sleeve pieces having a half-split shape. Such a fireproof sleeve is attached to a through hole formed in a wall by combining a pair of sleeve pieces to form the sleeve body and inserting the sleeve body into the through hole until the flange plate abuts against the wall. In addition, the outer edge part of the through hole can be concealed by the flange plate extending radially outward from the sleeve body. It is said that the sleeve body is pressed against the inner wall of the through hole by filling the inside of the sleeve body attached to the wall body with a thermally expandable fireproof pack.

[0003] With the fire-resistant sleeve described above, in the event of a fire, the heat-expandable fire-resistant pack filled inside the sleeve body expands and blocks the internal space of the sleeve body, thereby preventing the fire from spreading through the through hole. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 4196383 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above-mentioned conventional fire-resistant sleeve, even if the thermally expandable fire-resistant pack expands, there are cases where the fire still spreads, and therefore improvement has been demanded.

[0006] Therefore, an object of the present invention is to provide a thermal expansion material mounting fixture that can more reliably suppress the spread of fire, and a fire-resistant compartment penetration device that is equipped with the thermal expansion material mounting fixture. [Means for solving the problem]

[0007] The thermal expansion material mounting device of the present invention is a thermal expansion material mounting device for installing a thermal expansion material that expands in response to heat in a through hole formed to penetrate the inside of a building or a partition that separates the inside from the outside, and has a cylindrical body that is fire-resistant and formed into a cylindrical shape so that it can be inserted into the through hole, and the cylindrical body is configured to serve as an outer wall through which the thermal expansion material provided inside the tube expands mainly radially inward when the thermal expansion material expands in response to heat, and is provided with an extension allowing portion that allows a portion of the thermal expansion material to extend to an external region radially outward of the cylindrical body, and the extension allowing portion is arranged at least in an adjacent portion adjacent to the other circumferential end side of the inner portion that is arranged radially inward of the other circumferential end of the cylindrically formed cylindrical body, and the adjacent portion is configured so that the thermal expansion material can be installed on the inner surface side.

[0008] According to this configuration, since the extension allowance portion is provided in the adjacent portion, the thermal expansion material provided inside the cylindrical body not only expands radially inward inside the cylindrical body, but also extends radially outward in the adjacent portion via the extension allowance portion. Therefore, since the inner portion is located radially inward of the other circumferential end portion, the adjacent portion is located radially inward from the other circumferential end portion to form a step, and even if a gap is formed between the outer peripheral surface of the cylindrical body and the inner wall of the through hole at the step portion, the gap can be blocked by the thermal expansion material extending from the extension allowance portion, and the through hole formed in the partition body can be entirely blocked, thereby reliably suppressing the spread of fire.

[0009] In addition, the extension-permitting portion has an extension hole that penetrates radially through the cylindrical body, and the extension hole is configured to be a hole that is long in the axial direction, or a plurality of extension holes can be provided spaced apart in the axial direction.

[0010] According to this configuration, the extension hole is a long hole that continues in the axial direction, or multiple extension holes are provided in adjacent portions spaced apart in the axial direction, so that even if the positional relationship between the inner wall of the through hole and the cylindrical body in the axial direction is shifted, the gap formed between the outer peripheral surface of the cylindrical body and the inner wall of the through hole can be blocked by the thermal expansion material.

[0011] In addition, the thermal expansion material mounting device of the present invention is a thermal expansion material mounting device for installing a thermal expansion material that expands when exposed to heat in a through hole formed to penetrate the interior of a building or a partition that separates the interior from the exterior, and has a cylindrical body that is fire-resistant and formed into a cylindrical shape so that it can be inserted into the through hole, and when formed into a cylindrical shape, it serves as an outer wall for the thermal expansion material provided inside to expand mainly radially inward, and the cylindrical body has an inner portion that is positioned radially inward from the other circumferential end of the cylindrical body when formed into a cylindrical shape, and an adjacent portion that is adjacent to the inner portion on the other circumferential end side, and the adjacent portion is configured to have an outer peripheral mounting portion that can mount a thermal expansion material on its outer peripheral surface.

[0012] According to this configuration, since the thermal expansion material can be attached to the outer peripheral surface of the adjacent portion by the outer peripheral mounting portion, the thermal expansion material attached to the outer peripheral mounting portion can expand radially outward of the adjacent portion. Therefore, even if a step is formed by the inner portion being positioned radially inward from the other circumferential end portion due to the inner portion being positioned radially inward from the other circumferential end portion, and a gap is formed between the outer peripheral surface of the cylindrical body and the inner wall of the through hole at the step portion, the gap can be blocked by the thermal expansion material, and the through hole formed in the partition body can be entirely blocked, thereby reliably suppressing the spread of fire.

[0013] In addition, the fire-resistant compartment penetration device of the present invention is a fire-resistant compartment penetration device that is inserted into a through hole formed to penetrate a partition that separates the interior or the interior from the outside of a building, and comprises a thermal expansion material mounting device having a cylindrical body that is fire-resistant and formed into a cylindrical shape so that it can be inserted into the through hole, and a thermal expansion material that expands when exposed to heat, wherein the cylindrical body comprises an inner portion that is positioned radially inward from the other circumferential end of the cylindrical body when formed into a cylindrical shape, and an adjacent portion that is adjacent to the inner portion on the other circumferential end side, and the adjacent portion is configured so that the thermal expansion material is able to expand radially outward in the adjacent portion.

[0014] With this configuration, the thermal expansion material can extend radially outward from the adjacent portion, so that a step is formed when the adjacent portion is positioned radially inward from the other circumferential end, and even if a gap is formed between the outer peripheral surface of the cylindrical body and the inner wall of the through hole at the step, the gap can be blocked by the thermal expansion material, and the through hole formed in the partition can be completely blocked, thereby reliably suppressing the spread of fire. Effect of the Invention

[0015] According to the present invention, it is possible to obtain a thermal expansion material mounting fixture that can more reliably suppress the spread of fire, and a fire-resistant compartment penetration device equipped with the thermal expansion material mounting fixture. [Brief description of the drawings]

[0016] [Figure 1] FIG. 2 shows the inner surface of a fire-resistant compartment penetrator according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a view showing the outer surface of the fire-resistant compartment penetrator. [Diagram 3] FIG. [Figure 4] FIG. 2 is a view showing the fire-resistant compartment penetrator in a cylindrical shape. [Diagram 5] FIG. 2 is a view showing the state in which the fire-resistant compartment penetrator is inserted into a through hole. [Figure 6] FIG. 6 is a cross-sectional view showing the inside of the fire-resistant compartment penetrator shown in FIG. 5. [Figure 7a]7 is an enlarged view of part VII shown in FIG. 6, showing a state in which the bent portion is closed. FIG. [Figure 7b] 7 is an enlarged view of part VII shown in FIG. 6, showing a state in which the folded portion is opened. FIG. [Figure 8] FIG. 8 is a cross-sectional view taken along the line VIII-VIII in FIG. 5. [Figure 9] FIG. 6 is a diagram showing the state of the fire-resistant compartment penetrator shown in FIG. 5 during a fire. [Figure 10] 10 is a cross-sectional view taken along the line XX in FIG. [Figure 11] FIG. 13 shows a fire-resistant compartment penetrator according to another embodiment of the present invention. [Figure 12] FIG. 11 is a diagram showing a state in which a fire-resistant compartment penetrator according to another embodiment of the present invention is inserted into a penetration hole. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] A fire-resistant compartment penetrator 1 according to one embodiment of the present invention will be described with reference to Figs. 1 to 10. For ease of explanation, the front side and the back side will be described based on the direction of the through hole 7a formed in the partition body 7 (specifically, based on the direction shown in Fig. 5). The axial direction will be described based on the axial direction of the fire-resistant compartment penetrator 1, and the circumferential direction will be described based on the circumferential direction of the cylindrically formed fire-resistant compartment penetrator 1 (specifically, based on the direction shown in Fig. 1). Furthermore, the radial direction will be described based on the radial direction of the cylindrically formed fire-resistant compartment penetrator 1 (specifically, the direction penetrating the paper surface of Fig. 1).

[0018] The fire-resistant compartment penetrator 1 is inserted into a through hole 7a formed in a partition 7 that separates the inside and outside or the inside of a building, and is used to suppress the spread of fire through the through hole 7a in the event of a fire. The partition 7 of this embodiment is a hollow wall in which two wall bodies 71 are provided spaced apart in the thickness direction. In addition, a long body 8 (specifically, a bundle of pipes and wiring) is inserted into the fire-resistant compartment penetrator 1 inserted into the partition 7.

[0019] The fire-resistant compartment penetrator 1 is formed by turning a plate-like body as shown in Figures 1 to 3 into a cylindrical shape as shown in Figure 4, and can be inserted into the through hole 7a in the cylindrical state. Specifically, the fire-resistant compartment penetrator 1 includes a thermal expansion material mounting fixture 2 in which a thermal expansion material 3 can be installed, and the thermal expansion material 3 that is installed inside the thermal expansion material mounting fixture 2 and expands when exposed to heat.

[0020] As shown in Figures 1 to 4, the thermal expansion material mounting fixture 2 comprises a cylindrical body 4, a positioning portion 5 provided on the outer peripheral surface of the cylindrical body 4, and a blocking member 6 attached to the inside of the cylindrical body 4.

[0021] The cylindrical body 4 is made of a metal thin plate and has a hardness such that it can be rolled by hand from the developed state shown in Fig. 1 to Fig. 3 into a cylindrical shape as shown in Fig. 4. The cylindrical body 4 also includes an outer wall portion 41 that serves as an outer wall for the thermal expansion material 3 provided inside to expand mainly radially inward, an extension allowing portion 42 that allows a part of the thermal expansion material 3 provided inside to extend radially outward from the cylindrical body 4, a mounting portion 43 to which the blocking member 6 is mounted, and a claw portion 411 that assists mounting the cylindrical body 4 to the partition body 7 having the through hole 7a formed therein by bending it outward from the cylinder. The cylindrical body 4 also includes a one end portion 44 that constitutes one circumferential end portion and an other end portion 45 that constitutes the other circumferential end portion.

[0022] As shown in Fig. 1, a one-end locking portion 44a capable of being locked to the other-end portion 45 is formed on the other axial end side of the cylindrical body 4 at the one-end portion 44. A other-end locking portion 45a capable of being locked to the one-end locking portion 44a is formed on the other axial end side of the cylindrical body at the other-end portion 45. Specifically, the one-end locking portion 44a is formed in a notch shape at the other axial end of the one-end portion 44, and a plurality of the one-end locking portions 44a are provided at a predetermined interval along the circumferential direction. The other-end locking portion 45a is formed in a notch shape at one location at the other axial end of the other-end portion 45, and is configured to be locked to any one of the one-end locking portions 44a.

[0023] 4, 6 and 8, the one end portion 44 is disposed radially inward of the cylindrical body 4 with respect to the other end portion 45. The inner portion 441 is a portion of the one end portion 44 that is disposed radially inward of the other end portion 45. The outer portion 451 is a portion of the other end portion 45 that is disposed radially outward of the inner portion 441. In the following description, a case will be described in which the one end locking portion 44a located closest to the one circumferential end side is locked with the other end locking portion 45a as shown in FIG.

[0024] As shown in FIG. 8, the adjacent portion 442 is a portion of the one end portion 44 adjacent to the overlapping portion with the other end portion 45.

[0025] As shown in Figs. 1 to 4, the outer wall 41 is provided with the thermal expansion material 3 therein and serves as an outer wall for the thermal expansion material 3 provided therein to expand radially inward. In other words, the outer wall 41 defines a space in which the thermal expansion material 3 can be provided, and surrounds the thermal expansion material 3 provided therein with a thin plate material over the entire circumferential direction. The outer wall 41 has a strength sufficient to prevent the thermal expansion material 3 from breaking due to the force of expansion caused by heat. Such an outer wall 41 is configured to hold the thermal expansion material 3 from the radially outward side when the thermal expansion material 3 provided therein expands due to heat, thereby suppressing the thermal expansion material 3 from expanding radially outward, and serves as an outer wall for the expanded thermal expansion material 3 to expand inward at least to the extent of closing the gap between the cylindrical body 4 and the elongated body 8. In this embodiment, the thermal expansion material 3 is adhered to the outer wall portion 41 due to the adhesiveness of the thermal expansion material 3 itself, but the claw portion 411 can also be bent toward the inside of the tube to engage with the thermal expansion material 3, thereby assisting in the attachment of the thermal expansion material 3 to the outer wall portion 41.

[0026] The extension allowance portion 42 is a portion that allows the thermal expansion material 3 provided inside the cylindrical body 4 to extend to an external region on the radially outward side. The extension allowance portion 42 includes a plurality of one-circumference extension allowance portions 421 and a plurality of local extension allowance portions 425 provided at one end portion 44 in the circumferential direction. Each of the one-circumference extension allowance portions 421 and each of the local extension allowance portions 425 includes one extension hole 42a, 42b formed to penetrate the thin plate constituting the cylindrical body 4 in the thickness direction. The extension allowance portion 42 allows a part of the thermal expansion material 3 to extend radially outward through each extension hole 42a, 42b when the thermal expansion material 3 expands. The extension holes 42a, 42b are long holes of a size that allows the thermal expansion material 3 provided inside the cylindrical body 4 to extend radially outward when thermally expanded, and are arranged so that the longitudinal direction of the hole is along the circumferential direction and the short side direction is along the axial direction. The width of each of the extended holes 42a, 42b in the short side direction is set to a range of 1 mm to 10 mm.

[0027] Each of the all-around extension allowance portions 421 has an extension hole 42a as a long hole extending in the circumferential direction, and each of the all-around extension allowance portions 421 is arranged so that each extension hole 42a extends continuously around the circumferential direction of the cylindrical body 4. In other words, each all-around extension allowance portion 421 does not allow the thermal expansion material 3 to extend radially outward around the cylindrical body 4, but a plurality of all-around extension allowance portions 421 are arranged continuously in the circumferential direction, so that the thermal expansion material 3 can extend radially outward around the cylindrical body 4.

[0028] The extended holes 42a are arranged at a predetermined interval from each other in both the circumferential and axial directions. Each extended hole 42a is arranged to overlap in the circumferential direction with the extended hole 42a adjacent thereto in the axial direction. In other words, the extended holes 42a are arranged such that the longitudinal ends of the holes partially overlap in the circumferential direction with the other extended holes 42a adjacent thereto but spaced apart in the axial direction.

[0029] Furthermore, the extension holes 42a are adjacent to each other and spaced a predetermined distance L1 in the axial direction. The axial distance L1 between the extension holes 42a is set to be smaller than the thickness of the partition 7 (particularly the wall 71 constituting the partition 7) of the through hole 7a in which the thermal expansion material mounting fixture 2 is installed. Specifically, the axial distance L1 between the extension holes 42a is set to 10 mm or less. It is also possible to configure the axial distance L1 between the extension holes 42a to be larger than the thickness of the partition 7.

[0030] 2, the multiple local extension-permitting portions 425 are arranged at intervals in the axial direction within a predetermined range of the cylindrical body 4, that is, within a predetermined range in the axial midway portion of one end portion 44 of the cylindrical body 4. As a result, the multiple extension holes 42b are arranged at intervals in the axial direction within the predetermined axial range. The predetermined range is, for example, a range extending over a range of ¼ or more, more preferably ½ or more, of the axial length of the cylindrical body 4.

[0031] As shown in FIG. 4, each of the local extension allowance portions 425 has an extension hole 42b which is a long hole extending in the circumferential direction. Each extension hole 42b is provided from the inner portion 441 to the adjacent portion 442. Specifically, one end of the extension hole 42b in the circumferential direction is located on the one end side of the one end side locking portion 44a located at the most one end side in the circumferential direction, and the other end of the extension hole 42b is located on the other end side of the one end side locking portion 44a located at the most other end side in the circumferential direction. With this configuration, the extension hole 42b has one end in the circumferential direction located in the inner portion 441 and the other end in the circumferential direction located in the adjacent portion 442, regardless of which one end side locking portion 44a is locked to the other end side locking portion 45a. In addition, the axial length of the extension hole 42b (the width direction length of the long hole) is smaller than the axial separation distance between the extension holes 42b.

[0032] As shown in Fig. 4, the attachment portion 43 is provided at one axial end of the cylindrical body 4. That is, the attachment portion 43 is disposed on one end side of the outer wall portion 41 in the axial direction, and is adjacent to the outer wall portion 41 in the axial direction. The attachment portion 43 is configured such that the inner circumferential surface is free of holes and irregularities so that the blocking member 6 can be attached to the inner circumferential surface. Note that the attachment portion 43 may be configured such that holes and irregularities are formed on the inner circumferential surface, as long as the blocking member 6 can be attached to the inner circumferential surface.

[0033] The positioning portion 5 is made of a band-shaped elastic material such as sponge, soft rubber, or a foam material such as polyurethane foam, and is attached by adhesive or the like around the outer circumferential surface of the cylindrical body 4, closer to one end in the axial direction than the one-circumferential extension allowance portion 421, which is arranged closest to one end in the axial direction. The positioning portion 5 has a function as a stopper that positions the cylindrical body 4 with respect to the through-hole 7a when the cylindrical body 4 is inserted into the through-hole 7a, by abutting the end face on the other axial end side of the positioning portion 5, which is arranged spaced apart from one axial end side of the cylindrical body 4 to the other end side, against the wall surface of the partition body 7 (see FIG. 5), and also hides the gap between the outer circumferential surface of the cylindrical body 4 and the inner wall surface of the through-hole 7a in the abutting state.

[0034] As shown in Figures 1 and 2, the blocking member 6 is composed of a fire-resistant sheet such as aluminum glass cloth that is deformable by an external force, and is equipped with an attachment portion 61 that can be attached to the attachment portion 43, a blocking main body portion 62 that blocks the space between the inner surface of the cylindrical body 4 and the elongated body 8 inserted into the cylindrical body 4, a gap shielding portion 64 that can be deformed to follow the shape of the outer surface of the elongated body 8, and a shape retaining member 65 that retains the shape of the gap shielding portion 64.

[0035] The attachment portion 61 is provided at the end portion on the other axial end side. Specifically, the attachment portion 61 is provided with a tape (not shown) for attaching to the attached portion 43. The attachment portion 61 is attached to the inner surface of the attached portion 43 over the entire circumferential area.

[0036] The occlusion main body portion 62 includes a pipe covering portion 621 that covers the outer peripheral surface of the elongated body 8, and an expansion restricting portion 622 that is located closer to the attachment portion 61 than the pipe covering portion 621.

[0037] The gap shielding portion 64 is made of a flammable elastic material such as a urethane sponge material, and is fixed to the radially inner surface of the blocking member 6 with an adhesive as shown in FIG.

[0038] The shape-retaining member 65 is made of, for example, a metal wire, and is arranged by sandwiching it in the part where the tip of the blocking member 6 is folded back, as shown in Fig. 3. The shape-retaining member 65 is deformable when the part where the gap shielding part 64 is arranged is pressed by hand from the radial outside so as to align it with the piping that constitutes the elongated body 8, and has a hardness that allows the shape of the gap shielding part 64 to be maintained.

[0039] The occluding main body 62 is provided so as to extend radially inward from the other axial end of the mounting portion 61 when it is attached to the mounted portion 43 (see FIG. 6). With this configuration, the outer edge portion of the occluding main body 62 (a bent portion 63 described below) is located closer to the other end side than the one axial end of the cylindrical body 4, and when the long body 8 is covered with the pipe covering portion 621, a part of the occluding main body 62 is located between the one axial end of the cylindrical body 4 and the outer wall portion 41. Note that when the long body 8 is covered with the pipe covering portion 621, the entire occluding main body 62 can also be located between the one axial end of the cylindrical body 4 and the outer wall portion 41.

[0040] 1, a double-sided tape 66 is provided on the other circumferential end of the occlusion main body 62. The double-sided tape 66 bonds both circumferential ends of the occlusion main body 62 to each other, thereby maintaining the occlusion main body 62 in a cylindrical shape.

[0041] As shown in FIG. 3 and FIG. 7(a)(b), a bent portion 63 is provided at the connection portion between the occluding main body portion 62 and the mounting portion 61. The bent portion 63 is a portion where the end of the sheet-like occluding member 6 is bent so that the outer wall portion 41 side (the other end side in the axial direction) becomes a mountain. The bent portion 63 is formed by first folding the mounting portion 61 back toward the other end side in the axial direction with respect to the occluding main body portion 62, and then bonding the folded end of the mounting portion 61 to the mounting portion 43, so that the bent portion 63 with the other end side in the axial direction becomes a mountain is formed. In this embodiment, the mounting portion 61 is folded back once with respect to the occluding main body portion 62, but it may be folded back two or more times. The bent portion 63 is disposed at the other end side in the axial direction of the mounting portion 43, and is disposed away from one end side in the axial direction of the cylindrical body 4 to the other end side by the axial length of the mounting portion 43. When the occlusion main body portion 62 is pulled radially inward, the bent portion 63 receives the pulling force and changes from the closed state shown in FIG. 7(a) to the expanded state shown in FIG. 7(b).

[0042] The thermal expansion material 3 is a material that has thermal expansion and fire resistance, and is flame retardant, semi-non-flammable, or non-flammable. Specifically, the thermal expansion material 3 has an expansion performance to such an extent that it can block the inside of the thermal expansion material mounting fixture 2 when subjected to heat generated by a fire. As shown in FIG. 1, the thermal expansion material 3 is provided at multiple locations inside the thermal expansion material mounting fixture 2. Specifically, the thermal expansion material 3 includes a first thermal expansion material 31 provided inside the cylindrical body 4, and a second thermal expansion material 32 provided inside the blocking member 6.

[0043] The first thermal expansion material 31 is provided from one end to the other end in the circumferential direction at a portion corresponding to the outer wall portion 41 and the extension allowance portion 42 on the radially inner surface (the surface on the long body side) of the cylindrical body 4. The first thermal expansion material 31 is attached to the inner surface of the cylindrical body 4 by the self-adhesiveness of the first thermal expansion material 31 itself.

[0044] The second thermal expansion material 32, like the first thermal expansion material 31, is provided on the radially inner surface (surface on the elongated body side) of the blocking member 6 from one end to the other end in the circumferential direction. The second thermal expansion material 32 is provided on the other axial end side of the gap shielding portion 64 so as to be adjacent to the gap shielding portion 64 in the axial direction. The second thermal expansion material 32 is attached to the inner surface of the blocking member 6 by the self-adhesiveness of the first thermal expansion material 31 itself.

[0045] A method for using the above-mentioned fire-resistant compartment penetrator 1 will be described with reference to Figures 5 to 10. First, a method for attaching the fire-resistant compartment penetrator 1 to the penetration hole 7a will be described with reference to Figures 5 to 8.

[0046] As shown in Fig. 5, the fire-resistant compartment penetrator 1 is formed in a cylindrical shape and is attached by being inserted into a through hole 7a formed in a partition 7 of a building. The partition 7 of this embodiment is a hollow wall composed of two wall bodies 71 spaced apart in the thickness direction, with a space formed between the wall bodies 71. An elongated body 8 is inserted into such through hole 7a. In the following description, a case will be described in which the fire-resistant compartment penetrator 1 is attached to the through hole 7a into which the elongated body 8 has been inserted beforehand.

[0047] When attaching the fireproof compartment penetrator 1 to the penetration hole 7a, first, the fireproof compartment penetrator 1 in an unfolded state is rolled up by hand to deform it into a cylindrical shape and cover the periphery of the elongated body 8. Next, after one end locking portion 44a of the cylindrical body 4 is locked to the other end locking portion 45a, the release paper of the double-sided tape 66 provided on the blocking member 6 is peeled off, and one circumferential end and the other end of the blocking member 6 are bonded via the adhesive surface of the double-sided tape 66.

[0048] Next, the fireproof compartment penetrator 1, which is covering the periphery of the long body 8, is inserted into the through hole 7a from the front side to the back side with the cylindrical body 4 facing the through hole 7a, and the insertion is completed when the positioning portion 5 abuts against the front wall surface of the through hole 7a. After the insertion is completed, a light force is applied to the cylindrical body 4 to release the engagement between the one end locking portion 44a and the other end locking portion 45a. Then, the cylindrical body 4 expands in diameter due to its own elastic restoring force, and the outer surface comes into a state of fitting along the inner wall of the through hole 7a. The one axial end of the cylindrical body 4 that has been inserted into the through hole 7a is in a state of protruding forward from the front wall surface of the through hole 7a. When the fireproof compartment penetrator 1 is inserted to a predetermined position in the through hole 7a, as shown in FIG. 5, each of the one-circumference extension allowance parts 421 provided adjacent to the other axial end side (rear side) of the positioning part 5 is arranged to face the inner wall of the through hole 7a of the front wall body 71. On the other hand, any of the local extension allowance parts 425 is arranged on the rear side of the front wall body 71, specifically, facing the hollow part between the walls 71, 71 and the inner wall of the through hole 7a of the rear wall body 71. Since a plurality of the local extension allowance parts 425 are provided at intervals in the axial direction of the cylindrical body 4, even if the separation distance between the pair of walls 71, 71 constituting the partition body 7 is different or an error occurs when inserting the fireproof compartment penetrator 1 into the through hole 7a, any of the local extension allowance parts 425 can be opposed to the inner wall on the rear side of the through hole 7a.

[0049] When the fire-resistant compartment penetrator 1 is placed at a predetermined position in the through hole 7a, the inner part 441 of one end part 44 of the cylindrical body 4 and the outer part 451 of the other end part 45 are overlapped in the radial direction as shown in Fig. 8, so that a step 4A corresponding to the thickness of the fire-resistant compartment penetrator 1 is formed between the outer peripheral surface of the outer part 451 and the outer peripheral surface of the adjacent part 442. As a result, a gap is formed between the inner wall of the through hole 7a and the adjacent part 442.

[0050] After the fire-resistant compartment penetrator 1 is inserted into the through hole 7a, the blocking member 6 blocks the gap between the inner peripheral surface of the cylindrical body 4 and the outer peripheral surface of the long body 8. Specifically, as shown in FIG. 7(a), the bent portion 63 in the closed state is deformed in the opening direction as shown in FIG. 7(b), so that the expansion restricting portion 622 of the blocking main body portion 62 extends radially inward from the inner peripheral surface of the cylindrical body 4, and the expansion restricting portion 622 blocks the gap between the inner peripheral surface of the cylindrical body 4 and the outer peripheral surface of the long body 8. Here, the bent portion 63 (the outer edge portion of the expansion restricting portion 622) is disposed at a position spaced from one end of the cylindrical body 4 toward the other end in the axial direction, so that at least a part of the expansion restricting portion 622 extending radially inward is located inside the cylindrical body 4. As shown in FIG. 6, in this embodiment, the entire expansion restricting portion 622 extends in a direction intersecting the radial and axial directions (extending diagonally relative to the radial direction), but this configuration is not limited to this. For example, the expansion restricting portion 622 can be configured so that from the outer edge portion to a radially inward midpoint extends along the radial direction of the cylindrical body 4, and the portion radially inward from the midpoint extends diagonally relative to the radial direction, or the entire expansion restricting portion 622 can be configured to extend along the radial direction.

[0051] Next, the pipe covering portion 621 is attached to the outer peripheral surface of the elongated body 8. The pipe covering portion 621 maintains the state of being attached to the outer peripheral surface of the elongated body 8 due to its own shape retention.

[0052] When the pipe covering part 621 is attached to the outer peripheral surface of the elongated body 8, the gap shielding part 64 deforms to follow the shape of the outer peripheral surface of the elongated body 8, thereby closing the gap between the elongated body 8 and the pipe covering part 621. Specifically, the gap shielding part 64 follows the shape of unevenness formed on the outer peripheral surface of the elongated body 8 and the shape of valleys formed between multiple pipes and wiring, thereby closing the gap between the pipe covering part 621 and the elongated body 8. Furthermore, when a force is applied to the pipe covering part 621 so as to move it along the outer peripheral surface of the elongated body 8, the gap shielding part 64 is held in a state pressed against the elongated body 8 by the shape retaining member 65, and maintains a state of following the shape of the outer peripheral surface of the elongated body 8.

[0053] Next, a case where a fire occurs near the through-hole 7a will be described with reference to FIGS.

[0054] As shown in FIG. 9, when a fire breaks out near the through hole 7a, the thermal expansion material 3 (first thermal expansion material 31 and second thermal expansion material 32) of the fire-resistant compartment penetrator 1 expands due to heat. Note that, since the occlusion member 6 closes the space between the cylindrical body 4 and the elongated body at least until the thermal expansion material 3 expands after the fire breaks out, it is possible to prevent the flame from flowing from the front side to the back side or from the back side to the front side of the through hole 7a through the cylindrical body 4. Therefore, it is possible to prevent the fire from spreading even before the thermal expansion material 3 expands. Meanwhile, the non-fire-resistant members of the fire-resistant compartment penetrator 1, i.e., the gap shielding portion 64 and the positioning portion 5, burn or melt (hereinafter referred to as burnt).

[0055] When the first thermal expansion material 31 receives heat, it tends to expand in the radial and axial directions. However, since the mounting portion 61 of the blocking member 6 is attached to the mounting portion 43 of the cylindrical body 4, the expansion of the first thermal expansion material 31 toward the one end side (near side) in the axial direction is restricted by the expansion restricting portion 622. Specifically, since the expansion restricting portion 622 functions as a resistance against the first thermal expansion material 31 that tends to expand toward the one end side (near side) in the axial direction, the first thermal expansion material 31 first expands radially inward of the cylindrical body 4 and then extends radially outward through the extension holes 42a, 42b. As a result, the expansion restricting portion 622 restricts the expansion of the first thermal expansion material 31 toward the one end side (near side) in the axial direction.

[0056] As a result, the inside of the cylindrical body 4 is blocked by the first thermal expansion material 31 expanding radially inward, while the space between the outer surface of the cylindrical body 4 and the inner wall of the through hole 7a is reliably blocked by the first thermal expansion material 31 extending and expanding radially outward through the extension holes 42a, 42b of the extension-allowing portion 42.

[0057] 10, when the first thermal expansion material 31 located on the inner circumferential surface of the outer portion 451 expands, the inner portion 441 is pushed radially inward, and the entire one end portion 44 moves radially inward. Accordingly, the adjacent portion 442 adjacent to the inner portion 441 also moves radially inward away from the outer portion 451. As a result, the radial width of the step 4A formed in the adjacent portion 442 increases, and the gap formed between the adjacent portion 442 and the inner wall of the through hole 7a at the time of installation tends to further increase.

[0058] However, since the first thermal expansion material 31 extends radially outward from the extension allowance portion 42 (one of the multiple one-way extension allowance portions 421 that is arranged in the adjacent portion 442 and the local extension allowance portion 425) provided in the adjacent portion 442, the gap formed between the adjacent portion 442 and the inner wall of the through hole 7a can be blocked by the extended first thermal expansion material 31. In Fig. 9, the gap between the front wall 71 and the adjacent portion 442 is blocked by the thermal expansion material 3 extending from the one-way extension allowance portion 421 arranged in the adjacent portion, and the gap between the rear wall 71 and the adjacent portion 442 is blocked by the thermal expansion material 3 extending from the local extension allowance portion 425.

[0059] Moreover, the second thermal expansion material 32 expands radially inward when exposed to heat, and closes the gap between the blocking main body portion 62 (pipe covering portion 621) and the outer circumferential surface of the elongated body 8.

[0060] After the first thermal expansion material 31 has expanded sufficiently, the blocking member 6 and the second thermal expansion material 32 may fall off the cylindrical body 4 or burn down due to heat or wind caused by the fire. Even in such a case, the first thermal expansion material 31 has expanded sufficiently, so that the spread of fire can be suppressed. That is, the blocking member 6 can suppress the spread of fire through the through hole 7a as long as it blocks the space between the inner surface of the cylindrical body 4 and the outer surface of the elongated body 8 at least until the first thermal expansion material 31 expands and blocks the inside of the through hole 7a. In this embodiment, since the blocking member 6 is attached to the inner surface of the cylindrical body 4, it is possible to suppress the fire caused by the fire from directly hitting the mounting portion 61, and therefore it is possible to suppress the blocking member 6 from falling off the cylindrical body 4 at least until the first thermal expansion material 31 expands and blocks the inside of the through hole 7a.

[0061] Hereinafter, the effects of the thermal expansion material fixture 2 and the fire-resistant compartment penetrator 1 of the above embodiment will be described.

[0062] According to the thermal expansion material mounting fixture 2 of this embodiment, the extension holes 42a, 42b of the extension allowance portion 42 are provided in the adjacent portion 442, so that the thermal expansion material 3 provided inside the cylindrical body 4 can be expanded not only radially inward inside the cylindrical body 4 but also radially outward in the adjacent portion 442 via the extension allowance portion 42. Therefore, even if a step 4A is formed on the outer circumferential surface of the adjacent portion 442 and the width (gap) of the step 4A becomes larger due to the expansion of the thermal expansion material 3 caused by the outbreak of a fire, and a gap is formed between the outer circumferential surface of the cylindrical body 4 and the inner wall of the through hole 7a, the gap can be blocked by the thermal expansion material 3, and the through hole 7a formed in the partition body 7 can be completely blocked, thereby reliably suppressing the spread of the fire.

[0063] Furthermore, by providing the extension holes 42b at multiple positions spaced apart in the axial direction of the adjacent portion 442, the thermal expansion material 3 can extend radially outward at multiple positions spaced apart in the axial direction of the adjacent portion 442.Therefore, even if the positional relationship between the inner wall of the through hole 7a and the cylindrical body 4 in the axial direction is shifted, the thermal expansion material 3 can close the gap formed between the outer peripheral surface of the cylindrical body 4 and the inner wall of the through hole 7a.

[0064] Furthermore, by providing the positioning portion 5 near the all-round extension allowance portion 421, the all-round extension allowance portion 421 can be brought into contact with one of the partition bodies 7 in a state in which it faces the inner wall of the through hole 7a of one of the partition bodies 7. Therefore, even if the all-round extension allowance portion 421 is hidden by the partition body 7 and cannot be seen when the cylindrical body 4 is inserted into the through hole 7a, the positioning portion 5 can be brought into contact with the partition body 7 to set the all-round extension allowance portion 421 at an appropriate position facing the inner wall of the through hole 7a.

[0065] In addition, since the mounting portion 61 is attached to the inner circumferential surface of the cylindrical body 4, in the event of a fire, it is possible to prevent the fire from directly hitting the mounting portion 61. Therefore, it is possible to prevent the blocking member 6 from falling off the cylindrical body 4, thereby improving the fire resistance.

[0066] Furthermore, since the blocking main body 62 is disposed at a distance from one end side of the axial direction of the cylindrical body 4 to the other end side of the axial direction, the blocking member 6 can prevent the expanding thermal expansion material 3 from spreading in the axial direction. Therefore, the thermal expansion material 3 reliably spreads radially inward of the outer wall portion 41, and the inside of the cylindrical body 4 can be reliably blocked with the thermal expansion material 3 to prevent the spread of fire.

[0067] In addition, since the outer wall portion 41 and the attached portion 43 are provided adjacent to each other in the axial direction, the blocking member 6 can be disposed in a position close to the thermal expansion material 3. Therefore, the thermal expansion material 3 can be reliably prevented from spreading in the axial direction.

[0068] Furthermore, since the blocking member 6 is in the form of a deformable sheet, the radially inner end of the blocking main body 62 can be deformed to match the outer shape of the elongated body 8 inserted into the cylindrical body 4. Therefore, the blocking main body 62 can be provided regardless of the outer shape of the elongated body 8, so that the thermal expansion material 3 can be reliably prevented from spreading in the axial direction.

[0069] Furthermore, when a force pulling the blocking member 6 radially inward is applied, the blocking member 6 deforms in the opening direction with the bent portion 63 as a fulcrum, so that it is possible to prevent a force from being directly applied to the mounting portion 61 of the blocking member 6 in a direction in which the blocking member 6 would peel off from the mounted portion 43. This makes it possible to prevent the blocking member 6 from peeling off or falling off from the cylindrical body 4.

[0070] Furthermore, since the mounting portion 61 is located at one end in the axial direction of the cylindrical body 4, it is easy to align the radially inner end of the blocking member 6 provided on the cylindrical body 4 with the outer shape of the elongated body 8.

[0071] Furthermore, the blocking member 6 has an outer edge portion attached to the cylindrical body 4 by the attachment portion 61, and an inner edge portion supported by the elongated body 8 by the pipe covering portion 621, so that both ends on the inner edge side and the outer edge side of the expansion restricting portion 622 are supported. Therefore, when the first thermal expansion material 31 tries to expand toward one end in the axial direction, the expansion restricting portion 622 can reliably resist the expansion, so that the inside of the cylindrical body 4 can be reliably blocked by the thermal expansion material 3.

[0072] Furthermore, in the event of a fire, the blocking member 6 prevents the thermal expansion material 3 (first thermal expansion material 31) provided inside the cylindrical body 4 from expanding in the axial direction, reliably blocking the inside of the cylindrical body 4 with the thermal expansion material 3, while blocking the gap formed between the inner wall of the through hole 7a and the outer circumferential surface of the cylindrical body 4 with the thermal expansion material 3 extending from the extension holes 42a, 42b of the extension-permitting portion 42. As a result, the inside of the through hole 7a can be completely blocked with the thermal expansion material 3, thereby preventing the spread of fire through the through hole 7a.

[0073] Furthermore, according to the fire-resistant compartment penetration device 1 of this embodiment, the thermal expansion material 3 installed inside the cylindrical body 4 can extend radially outward from the adjacent portion 442, so that even if a step 4A is formed on the outer peripheral surface of the adjacent portion 442 and a gap is formed between the outer peripheral surface of the cylindrical body 4 and the inner wall of the through hole 7a by the step 4A, the gap can be blocked by the thermal expansion material 3, and the through hole 7a formed in the partition body 7 can be completely blocked, thereby reliably suppressing the spread of fire.

[0074] Further, the thermal expansion material 3 is located radially outward of the inner portion 441 (radially inward of the outer portion 451). Therefore, the space between the inner portion 441 in the cylindrical body 4 and the outer portion 451 of the inner portion 441 is filled with the thermal expansion material 3 located radially outward of the inner portion 441, and the gap between the outer peripheral surface of the cylindrical body 4 and the inner wall of the through hole 7a, which is generated when the inner portion 441 is pushed radially inward by the expansion of the thermal expansion material 3 located radially outward, can be filled with the thermal expansion material 3 extending from the local extension allowance portion 425.

[0075] Furthermore, since the mounting portion 61 is attached to the inner circumferential surface of the cylindrical body 4, in the event of a fire, it is possible to prevent the fire from directly hitting the mounting portion 61. Therefore, it is possible to prevent the blocking member 6 from falling off the cylindrical body 4, thereby improving the fire resistance.

[0076] Furthermore, since the blocking main body 62 is disposed at a distance from one end side of the axial direction of the cylindrical body 4 to the other end side of the axial direction, the blocking member 6 can prevent the thermal expansion material 3 disposed inside the cylindrical body 4 from spreading in the axial direction. Therefore, the thermal expansion material 3 reliably spreads radially inward of the outer wall portion 41, so that the inside of the cylindrical body 4 can be reliably blocked with the thermal expansion material 3 to prevent the spread of fire.

[0077] Although an embodiment of the present invention has been described above by way of example, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0078] For example, although a case has been described in which the thermal expansion material mounting fixture 2 is inserted into a through hole 7a formed in the hollow wall, the configuration is not limited to this, and the partition 7 may be a hollow wall or a hollow floor, or a solid wall or a solid floor.

[0079] In addition, in this embodiment, both the all-around extension allowance portion 421 and the local extension allowance portion 425 are provided, but the present invention is not limited to such a configuration and may have either one of them. For example, when the partition 7 into which the thermal expansion material mounting tool 2 is inserted has a single wall body 71 such as a solid wall or a solid floor, even if a configuration having only one of the all-around extension allowance portion 421 and the local extension allowance portion 425 is adopted, the thermal expansion material 3 extending from the extension holes 42a, 42b of either the all-around extension allowance portion 421 or the local extension allowance portion 425 can close the gap between the through hole 7a and the adjacent portion 442.

[0080] Furthermore, the thermal expansion material fixture 2 has been described as including the blocking member 6, and the blocking member 6 is attached to the inner peripheral surface of the cylindrical body 4, but is not limited to this configuration, and even when the blocking member 6 is included, the blocking member 6 may be attached to the outer peripheral surface of the cylindrical body 4. Also, the blocking member 6 may not be included.

[0081] In addition, the cylindrical body 4 has been described as a single thin plate body rolled into a cylindrical shape by hand, but the configuration is not limited to this, and for example, it may be formed into a cylindrical body with a portion open by combining multiple arc-shaped thin plate bodies.

[0082] In addition, although the description has been given of the case where each extension-allowing portion 42 has one extension hole 42a, 42b, the present invention is not limited to this configuration, and each extension-allowing portion 42 may have a plurality of small holes arranged in a line in the circumferential direction and penetrating in the radial direction, and the thermal expansion material 3 may extend radially outward from each of the plurality of small holes. In addition, even when the extension holes 42a, 42b are provided, the extension holes 42a, 42b are not limited to being elongated holes extending along the circumferential direction, and may be configured as elongated holes extending along the axial direction or as elongated holes extending in a direction intersecting the axial direction and the circumferential direction. In short, the extension-allowing portion 42 may be configured so that the thermal expansion material 3 arranged on the inner surface can extend radially outward. When the extension holes 42a, 42b are configured as elongated holes extending along the axial direction, the extension holes 42a, 42b are arranged at intervals in the circumferential direction, so that the thermal expansion material 3 can be reliably extended to the adjacent portion 442 even if the range of the inner portion 441 and the adjacent portion 442 changes.

[0083] In addition, the extension hole 42b as the local extension allowing portion 425 is formed so as to extend over the range of the inner portion 441 and the adjacent portion 442 of the cylindrical body 4, but it does not have to be formed in the inner portion 441, and it is sufficient that it is provided at least in the adjacent portion 442.

[0084] Furthermore, although the thermal expansion material 3 has been described as being attached to the cylindrical body 4 by the self-adhesive properties of the thermal expansion material 3 itself, this configuration is not limited thereto, and for example, the plate-shaped thermal expansion material 3 and the cylindrical body 4 can be bonded with an adhesive or the like, or can be configured to be engaged with the claw portion 411.

[0085] In addition, although the case where the thermal expansion material 3 and the cylindrical body 4 are previously constructed as one unit has been described, this is not limited to the above case, and the thermal expansion material 3 can also be provided inside the cylindrical body 4 after the cylindrical body 4 is attached to the through hole 7a.

[0086] Furthermore, although the thermal expansion material 3 is described as being a plate-like body, it is not limited to this case and may be configured as a paste or may be a flexible foam that is elastically deformable. When using a paste-like thermal expansion material 3, for example, the thermal expansion material 3 filled in a bag can be provided inside the cylindrical body 4.

[0087] Furthermore, although the cylindrical body 4 has been described as being a thin steel plate, it is not limited to this configuration and can be made of various materials that are fire-resistant and can induce the thermal expansion material 3 placed inside to expand inward.

[0088] Furthermore, the cylindrical body 4 is a thin plate body that is rolled into a cylindrical shape and inserted into the through hole 7a in the above description, but is not limited to this configuration, and the cylindrical body 4 may be formed into a cylindrical shape in advance.

[0089] In addition, the positioning portion 5 is described as being made of a sponge material made of foamed resin, but is not limited to such a configuration. As long as the cylindrical body 4 can be positioned at a predetermined position in the through hole, for example, a marking for position confirmation may be provided on the outer peripheral surface of the cylindrical body 4. In such a configuration, the position of the cylindrical body 4 relative to the through hole 7a can be determined by aligning the marking with a predetermined position (for example, the position of the wall surface on the front side of the through hole 7a). Also, a configuration without the positioning portion 5 can be adopted. In such a configuration, for example, the position of the cylindrical body 4 relative to the through hole 7a can be determined using the one-circumference extension allowance portion 421 as a mark, or the position of the cylindrical body 4 relative to the through hole 7a can be determined using the amount of protrusion of one end of the cylindrical body 4 from the through hole 7a as a guide. In short, as long as the cylindrical body 4 can be positioned at an appropriate position relative to the through hole 7a, a specific configuration for this purpose is not limited.

[0090] Furthermore, although the blocking member 6 has been described as being folded once at the folding portion 63, the present invention is not limited to this configuration, and the folding portion 63 may be omitted, or the folding portion 63 may be folded multiple times.

[0091] Also, although the expansion restricting portion 622 (blocking main body portion 62) is provided on the cylindrical body 4 so as to extend radially inward from the other axial end portion of the mounted portion 43 in the above description, the present invention is not limited to this configuration. If the blocking main body portion 62 (expansion restricting portion 622) is located closer to the other end than the one axial end portion of the cylindrical body 4, it functions as a resistance when the expanding thermal expansion material 3 tries to spread toward the one end portion in the axial direction, and the expansion restricting portion 622 can suppress the thermal expansion material 3 from spreading toward the one end portion in the axial direction.

[0092] Furthermore, the mounting portion 61 has been described as being affixed to the mounting base 43, but the present invention is not limited to this configuration and may be configured to engage with the mounting base 43 in various ways. For example, the mounting portion 61 may be configured to be attached to the mounting base 43 by engaging with a claw provided on the mounting base 43.

[0093] Further, although the case where the blocking member 6 is provided only at one end in the axial direction of the cylindrical body 4 has been described, the present invention is not limited to this configuration, and it may also be configured so that it is provided at both ends in the axial direction.

[0094] Further, the blocking member 6 is attached to a position closer to one end in the axial direction than the outer wall portion 41 in the above description, but the present invention is not limited to such a configuration, and for example, the blocking member 6 can be attached to the inner surface of the outer wall portion 41. In such a configuration, the mounting portion 61 is located between the outer wall portion 41 and the thermal expansion material 3.

[0095] Further, the first thermal expansion material 31 is provided inside the cylindrical body 4, and when thermally expanded, the first thermal expansion material 31 extends radially outward through the extension allowance portion 42. However, the present invention is not limited to such a configuration. For example, as shown in FIG. 11, the cylindrical body 4 may have an outer peripheral attachment portion 46 capable of attaching the thermal expansion material 3 to the adjacent portion 442 on the outer peripheral surface thereof, and the thermal expansion material 3 may have a third thermal expansion material 33 attached to the outer peripheral attachment portion 46, and the third thermal expansion material 33 may be attached to a range including at least the outer peripheral surface of the adjacent portion 442. Even with such a configuration, the third thermal expansion material 33 can expand radially outward with the outer peripheral surface of the cylindrical body 4 as the inner wall, so that the thermal expansion material 3 can close the gap between the cylindrical body 4 and the inner wall of the through hole 7a. Note that, in this configuration, the cylindrical body 4 may not have an outer peripheral attachment portion 46, and the third thermal expansion material 33 may be attached to the outer peripheral surface of the adjacent portion 442 by the self-adhesiveness of the third thermal expansion material 33 itself or by an adhesive.

[0096] In addition, the occlusion body 62 is described as being at least partially disposed away from one axial end of the cylindrical body 4 toward the other end, but is not limited to this configuration. For example, as shown in FIG. 12, when the mounting portion 61 is attached to the attached portion 43, the boundary between the mounting portion 61 and the occlusion body 62 can be located at one axial end of the cylindrical body 4, and the occlusion body 62 can be configured to extend from the boundary toward the radially inward side and the one axial end side. Even with this configuration, it is possible to prevent the mounting portion 61 from being directly exposed to fire, compared to the case where the mounting portion 61 is attached to the outer circumferential surface of the cylindrical body 4. For the sake of explanation, the occlusion member 6 is highlighted in the enlarged view of FIG. 12.

[0097] Furthermore, the first thermal expansion material 31 is described as being disposed only in the portion corresponding to the outer wall portion 41 and the extension allowance portion 42, but the present invention is not limited to such a configuration, and may be disposed so as to extend beyond the outer wall portion 41 to the one end side in the axial direction. For example, the first thermal expansion material 31 may be disposed so as to overlap the radially inner side of the blocking member 6 attached to the cylindrical body 4, and the end portion of the first thermal expansion material 31 on the one end side in the axial direction may be located in the middle portion of the blocking member 6 in the axial direction or in the one end portion in the axial direction. When the fire-resistant compartment penetrator 1 having such a configuration is installed in the through hole 7a, the portion of the blocking member 6 and the first thermal expansion material 31 overlapping the blocking member 6 closes the gap between the inner peripheral surface of the cylindrical body 4 and the outer peripheral surface of the elongated body 8. [Explanation of symbols]

[0098] 1...fire-resistant compartment penetration tool, 2...thermal expansion material mounting tool, 3...thermal expansion material, 31...first thermal expansion material, 32...second thermal expansion material, 33...third thermal expansion material, 4...cylindrical body, 4A...step, 41...outer wall portion, 411...claw portion, 42...extension allowance portion, 42a, 42b...extension hole, 421...circumferential extension allowance portion, 425...local extension allowance portion, 43...attached portion, 44...one end portion, 44a...one end side locking portion, 441... Inner portion, 442...adjacent portion, 45...other end portion, 45a...other end side engaging portion, 451...outer portion, 46...peripheral mounting portion, 5...positioning portion, 6...blocking member, 61...mounting portion, 62...blocking main body portion, 621...piping covering portion, 622...expansion restricting portion, 63...bent portion, 64...gap shielding portion, 65...shape retaining member, 66...double-sided tape, 7...partition body, 7a...through hole, 71...wall body, 8...long body

Claims

1. A fire-resistant partition penetration device to be placed in a penetration hole formed to penetrate the inside of a building or a partition body that separates the inside and outside of the building, a fire-resistant cylindrical body formed into a cylindrical shape such that both circumferential ends thereof overlap each other and can be inserted into the through hole; a thermal expansion material that expands upon receiving heat, The cylindrical body is configured to serve as an outer wall through which the thermal expansion material provided inside the tube expands mainly radially inward when the thermal expansion material expands due to heat, and includes an extension allowing portion that allows a portion of the thermal expansion material to extend to an external region radially outward of the cylindrical body, the extension-allowing portion is disposed in an inner portion of the cylindrical body that is located radially inner of the two end portions when the cylindrical body is overlapped, The thermal expansion material is installed on the inner surface of the inner part, and the fire-resistant compartment penetration device.

2. The extension-allowing portion is also arranged in an adjacent portion circumferentially adjacent to the inner portion in the cylindrical body formed in a cylindrical shape, The fire-resistant compartment penetration device according to claim 1 , wherein the thermal expansion material is also provided on the inner surface of the adjacent portion.

3. A partition body that partitions the inside of a building or the inside and outside of the building and has a through hole formed therein; an elongated body inserted into the through hole; A thermal expansion material that expands when exposed to heat; a thermal expansion material mounting tool for installing the thermal expansion material in the through hole, the thermal expansion material fitting has a fire-resistant cylindrical body that is disposed in the through hole by overlapping both circumferential ends thereof to form a cylindrical shape, The cylindrical body has the thermal expansion material disposed on its inner surface, and is configured to serve as an outer wall through which the thermal expansion material inside the cylinder expands mainly radially inward when the thermal expansion material expands due to heat, and is provided with an extension allowing portion that allows a portion of the thermal expansion material to extend to an external region radially outward of the cylindrical body, the extension-allowing portion is disposed in an inner portion of the cylindrical body that is located radially inner of the two end portions when the cylindrical body is overlapped, A fire-resistant compartment structure, wherein the thermal expansion material is installed in at least a portion of an area on the inner surface of the inner part that includes the extension-allowing portion and an area adjacent to the extension-allowing portion.

4. A fire-resistant compartment structure as described in Claim 3, wherein the thermal expansion material is installed at a position overlapping with the extension-allowable portion on the inner surface of the inner portion.

5. The extension-allowing portion is also arranged in an adjacent portion circumferentially adjacent to the inner portion in the cylindrical body formed in a cylindrical shape, The fire-resistant compartment structure according to claim 3 or 4, wherein the thermal expansion material is also provided on the inner surface of the adjacent portion.

6. A partition body that partitions the inside of a building or the inside and outside of the building and has a through hole formed therein; an elongated body inserted into the through hole; A thermal expansion material that expands when exposed to heat; a thermal expansion material mounting tool for installing the thermal expansion material in the through hole, the thermal expansion material fitting has a fire-resistant cylindrical body that is disposed in the through hole by overlapping both circumferential ends thereof to form a cylindrical shape, The cylindrical body has the thermal expansion material disposed on its inner surface, and is configured to serve as an outer wall through which the thermal expansion material inside the cylinder expands mainly radially inward when the thermal expansion material expands due to heat, and is provided with an extension allowing portion that allows a portion of the thermal expansion material to extend to an external region radially outward of the cylindrical body, the extension-allowing portion is disposed at least in a circumferentially adjacent portion of the cylindrical body that is located radially inside one of the two end portions when the two end portions are overlapped, A fire-resistant compartment structure, wherein the thermal expansion material is installed in at least a portion of an area including the extension allowance portion and an area adjacent to the extension allowance portion on the inner surface of the adjacent portion.

7. A fire-resistant compartment structure as described in Claim 6, wherein the thermal expansion material is installed at a position overlapping with the extension-allowable portion on the inner surface of the adjacent portion.

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