Fire prevention unit

Abstract

The design facilitates the handling and installation of components and achieves a fire-resistant structure that minimizes the impact on the surrounding environment during heating. [Solution] The fire protection unit (1) comprises a plate member (10) fixed to a compartment (8), a fire-resistant member (30) made of a heat-expandable fire-resistant material, and a heat-insulating member (40) integrated with the fire-resistant member (30) on the opposite side of the plate member (10). The fire protection unit (1) has a buffer space (B) between the plate member (10) and the fire-resistant member (30) that can receive at least a portion of the heat-expandable fire-resistant material that has expanded due to heat when heated.

Description

Technical Field

[0001] The present invention relates to a fire prevention measure unit.

Background Art

[0002] In order to prevent flames and heat from leaking through through-holes formed in partition bodies of buildings during a fire, the through-holes are made to have a fireproof structure. An example of such a fireproof structure is disclosed in Japanese Unexamined Patent Application Publication No. 2016-189954 (Patent Document 1). The fireproof structure of Patent Document 1 includes a plate member (cover member 3) fixed to a partition body (partition body 11) and a refractory member (fireproof material 1) formed of a heat-expandable refractory material. Further, this fireproof structure includes an enclosure member (partition member 2) disposed so as to surround the periphery of a long member (pipe body 13) inside a through-hole (through-hole 12).

[0003] To construct the fireproof structure of Patent Document 1, first, with a long member inserted through a through-hole in a partition body, the enclosure member is pushed into the through-hole while winding around the long member. Next, the refractory member is filled inside the through-hole partitioned by the enclosure member, and the gap between the through-hole and the long member is filled with the refractory member. Finally, while inserting the long member through the plate member, the plate member is disposed so as to cover the through-hole and fixed to the partition body.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Thus, the fire-resistant structure described in Patent Document 1 has components (plate members, fire-resistant members, and surrounding members) that are independent of each other and must be installed in a specific order. This resulted in the problem of being complicated to handle and time-consuming to install.

[0006] Furthermore, it is conceivable to place other functional members further inside the through-hole beyond the surrounding member. However, when the fire-resistant member expands due to heat, the expanded fire-resistant member, while supported by the plate member, would move the surrounding member and functional member axially. As a result, there was a possibility that the functional member might fall out of the through-hole in some cases.

[0007] Therefore, there is a need for technology that enables the realization of a fire-resistant structure that is easy to handle and install, and has minimal impact on the surrounding environment when heated. [Means for solving the problem]

[0008] The fire prevention unit according to the present invention is A fire protection unit for making a through-hole formed in a building compartment and through which at least one elongated body is inserted into a fire-resistant structure, A plate member positioned to cover the through hole and fixed to the partition body, A fire-resistant member formed of a heat-expandable fire-resistant material, which is integrated with the plate member either in direct contact with the surface of the through-hole side or via another member, The fire-resistant member comprises a heat-insulating member integrated with the plate member on the opposite side, A buffer space is provided between the plate member and the fire-resistant member, capable of receiving at least a portion of the thermally expandable fire-resistant material that expands due to heat during heating.

[0009] With this configuration, the plate member, fire-resistant member, and heat-insulating member are integrated into a single unit, making handling and construction for realizing a fire-resistant structure easy. Furthermore, by having a buffer space between the plate member and the fire-resistant member, when the heat-expandable fire-resistant material expands due to heating, at least a portion of the expanded material can be accommodated in the buffer space. Therefore, the amount of movement of the heat-insulating member in the axial direction can be reduced according to the volume accommodated in the buffer space. As a result, even when other members are arranged inside the through-hole, the impact on the surrounding environment during heating can be minimized.

[0010] Preferred embodiments of the present invention will be described below. However, the scope of the present invention is not limited by the preferred embodiments described below.

[0011] As one aspect, Preferably, the buffer space is composed of a foamed resin layer interposed between the plate member and the fire-resistant member.

[0012] With this configuration, the flammable foamed resin layer disappears when the thermally expandable fire-resistant material is heated to a temperature that causes thermal expansion. This allows for the proper formation of a buffer space during a fire, minimizing the impact on the surrounding environment. Since it only requires interposing a foamed resin layer between the plate member and the fire-resistant member, and does not involve structural changes to the plate member, a buffer space can be provided while minimizing increases in manufacturing costs.

[0013] As one aspect, It is preferable that the fire-resistant member and the heat-insulating member are covered from the outer periphery by a sheet-like member.

[0014] This configuration allows for a stronger integration of the fire-resistant and heat-insulating components.

[0015] As one aspect, Preferably, a functional member that can be filled in the through hole is further provided adjacent to the heat insulating member.

[0016] According to this configuration, even when the functional member is filled inside the through hole, the possibility of the functional member falling off from the through hole during heating can be reduced. Therefore, various functions according to the material, properties, etc. of the functional member can be appropriately exhibited.

[0017] As one aspect, the plate member and the fireproof member each have a plurality of insertion holes through which the long body is inserted in a state of communicating with each other, the heat insulating member preferably has a communication hole communicating with at least one of the plurality of insertion holes, and a portion corresponding to the remaining insertion holes is configured to be removable by a cut.

[0018] According to this configuration, by previously forming a communication hole for that purpose corresponding to at least one long body that is often inserted, it can be used as it is during construction, and the workability can be improved. Also, since the portion corresponding to the remaining insertion holes remains without being completely removed just by forming a cut, both sides of the partition body do not completely communicate, and a decrease in heat insulation performance can be avoided. When it is necessary to additionally insert another long body, the portion surrounded by the cut can be easily removed and used, so the workability can also be improved from this point.

[0019] Further features and advantages of the present invention will become clearer from the following description of exemplary and non - limiting embodiments described with reference to the drawings.

Brief Description of the Drawings

[0020] [Figure 1] Side view showing the fireproof structure of the embodiment [Figure 2] Perspective view of the fireproof measure unit [Figure 3] Partial exploded perspective view of the fireproof measure unit [Figure 4] Perspective view from the opposite side of the plate member [Figure 5] Schematic diagram showing the state of the fire prevention measure unit during a fire

Embodiment for Carrying out the Invention

[0021] An embodiment of the fire prevention measure unit will be described with reference to the drawings. The fire prevention measure unit 1 of the present embodiment is used for making the through hole 8H formed in the partition body 8 of the building and through which at least one long member 9 is inserted have a fire prevention structure.

[0022] The partition body 8 is a fire-resistant and fire-proof structure that partitions the inside and outside of the building or the space inside the building. As shown in FIG. 1, the partition body 8 of the present embodiment is an outer wall that horizontally partitions the outdoors and the indoors. The partition body 8 may be a solid wall such as a reinforced concrete structure (RC) or a lightweight cellular concrete structure (ALC), or may be a hollow wall such as a pair of gypsum boards. Of course, those having other structures may also be used as the partition body 8.

[0023] A through hole 8H that penetrates the partition body 8 in its thickness direction (horizontal direction in the illustrated example) is formed in the partition body 8. In the present embodiment, a circular through hole 8H is formed. However, without being limited to such a configuration, the specific shape of the through hole 8H may be, for example, an elliptical shape, a polygonal shape, or other various shapes.

[0024] At least one long member 9 is inserted into the through hole 8H of the partition body 8. The long member 9 has a long structure extending in one direction, such as a linear body, a tubular body, and a strip-shaped body. Examples of such a long member 9 include pipes and wirings for water supply, gas, electricity, and air conditioning devices. In the present embodiment, the long member 9 includes a plurality of pipe members 91. The pipe member 91 includes, for example, a metal fluid pipe and a heat insulating material made of synthetic resin that covers the periphery thereof.

[0025] A fire protection unit 1 is used to make the through-hole 8H through which multiple elongated bodies 9 are inserted a fire-resistant structure. As shown in Figures 1 to 3, the fire protection unit 1 of this embodiment comprises a plate member 10, an intervening member 20, a fire-resistant member 30, a heat-insulating member 40, a sheet-like member 50, and a functional member 60. The fire protection unit 1 integrally comprises the plate member 10, the intervening member 20, the fire-resistant member 30, the heat-insulating member 40, and the sheet-like member 50, and further comprises a functional member 60 which is separate from these.

[0026] The plate member 10 is positioned to cover the through hole 8H and fixed to the partition body 8. The plate member 10 of this embodiment has a front plate 11 and a rear plate 13. The front plate 11 is formed in a shape (a combination of two straight sections and two arc sections) with two opposing points cut in a straight line on either side of a circular center larger in diameter than the through hole 8H. This shape allows for space saving and is less susceptible to the influence of the surrounding environment, making it suitable for many construction sites. The front plate 11 is made of a metal plate-like body such as stainless steel. The rear plate 13 is formed to be the same size and shape as the front plate 11 and is fixed to the back side of the front plate 11. The rear plate 13 is made of an elastic material such as rubber. The rear plate 13 has a central protrusion 13a on its back side that is circular in shape with the same diameter as or slightly smaller than the through hole 8H (see Figure 4).

[0027] Multiple through holes 12 are formed through the front plate 11. In this embodiment, one through hole 12 is formed in the center of the front plate 11, and seven other through holes 12 are formed around it at predetermined intervals from each other, for a total of eight through holes 12. In this embodiment, all of the multiple through holes 12 are formed in a circular shape that is large enough for the elongated body 9 to pass through with sufficient clearance.

[0028] Multiple through holes 14 are formed through the rear plate 13. The multiple through holes 14 are formed at positions corresponding to the multiple through holes 12 of the front plate 11. In this embodiment, one through hole 14 is formed in the center of the rear plate 13, and seven other through holes 14 are formed around it at predetermined intervals from each other, for a total of eight through holes 14. In this embodiment, the multiple through holes 14 are formed in a circular or oval shape that is slightly smaller than the elongated body 9 so that the elongated body 9 can be sealed.

[0029] The elongated body 9 can be inserted into each pair of interconnected through holes 12 and 14. In this case, the through holes 14 of the rear plate 13 are in close contact with the outer surface of the elongated body 9, sealing the space between the through holes 14 and the elongated body 9. To enhance this sealing performance, the rear plate 13 may have a drainage channel inside to discharge any water that may enter between the through holes 12 and the elongated body 9. Note that the elongated body 9 does not need to be inserted into some of the through holes 12 and 14, in which case a cap member may be attached to those holes 12 and 14 from the front plate 11 side.

[0030] Furthermore, the plate member 10 has a plurality of fixing holes 15 formed across the front plate 11 and the rear plate 13. The plurality of fixing holes 15 are formed at predetermined intervals from each other on the peripheral edge of the plate member 10. These fixing holes 15 are holes for screwing the plate member 10 to the partition 8.

[0031] The intervening member 20 is fixed to the back side of the plate member 10 and to the front side of the fire-resistant member 30; in other words, it is interposed between the plate member 10 and the fire-resistant member 30. The intervening member 20 is a circular plate-like body with the same diameter as the central protrusion 13a of the rear plate 13 that constitutes the plate member 10. The outer diameter of the intervening member 20 is slightly smaller than the inner diameter of the through hole 8H of the compartment 8. The intervening member 20 is fixed to the plate member 10, for example, via an adhesive layer or a bonding layer.

[0032] The intervening member 20 is made of a flammable synthetic resin such as polyurethane (PUR), polystyrene (PS), polyolefin (e.g., polyethylene (PE) or polypropylene (PP)), polyvinyl chloride (PVC), and polyethylene terephthalate (PET). In this embodiment, the intervening member 20 is a foamed resin layer 21 formed by foaming these resins. The foaming ratio of the foamed resin constituting the foamed resin layer 21 may be, for example, 10 to 60 times, and preferably about 20 to 50 times. In this embodiment, a foamed polyethylene intervening member 20 (foamed resin layer 21) is used because it is relatively inexpensive and readily available.

[0033] Multiple through holes 22 are formed through the intervening member 20. The multiple through holes 22 are formed at positions corresponding to the multiple through holes 12 of the front plate 11. In this embodiment, one through hole 22 is formed in the center of the intervening member 20, and seven other through holes 22 are formed around it at predetermined intervals from each other, for a total of eight through holes 22. The multiple through holes 22 are in communication with the multiple through holes 12 and 14 of the plate member 10, and a long body 9 can be inserted through each of them.

[0034] The fire-resistant member 30 is fixed to the back side of the intervening member 20, or in other words, it is fixed to the surface of the plate member 10 on the side of the through hole 8H via the intervening member 20. The fire-resistant member 30 is made up of a circular plate-like body with the same diameter as the intervening member 20. The fire-resistant member 30 is fixed to the intervening member 20, for example, via an adhesive layer or a bonding layer.

[0035] The fire-resistant member 30 is formed of a heat-expandable fire-resistant material that has both thermal expansion (the property of increasing in volume when heated) and fire resistance (the property of being able to withstand fire heat and having a high melting point, making it difficult to burn). As the heat-expandable fire-resistant material, any known material can be used without particular limitation, for example, a material containing a binder resin, heat-expandable graphite, and an inorganic filler can be used. Examples of binder resins include thermoplastic resins, thermosetting resins, and rubber-like substances. Examples of heat-expandable graphite include crystalline compounds that maintain a layered carbon structure, obtained by acid-treating and then neutralizing graphite powder. Examples of inorganic fillers include metal oxides, metal carbonates, and calcium salts.

[0036] The fire-resistant member 30, formed from a heat-expandable fire-resistant material, expands when heated, for example, by the heat of a flame during a fire. The temperature at which the fire-resistant member 30 begins to expand is not particularly limited, but may be, for example, 150°C to 250°C. The coefficient of thermal expansion of the fire-resistant member 30 is not particularly limited, but may be, for example, 3 to 40 times.

[0037] Multiple through holes 32 are formed through the fire-resistant member 30. The multiple through holes 32 are formed at positions corresponding to the multiple through holes 22 of the intervening member 20. In this embodiment, one through hole 32 is formed in the center of the fire-resistant member 30, and seven other through holes 32 are formed around it at predetermined intervals from each other, for a total of eight through holes 32. The multiple through holes 32 communicate with the multiple through holes 22 of the intervening member 20, and a long body 9 can be inserted through each of them.

[0038] The heat insulating member 40 is fixed to the back side of the fire-resistant member 30. The heat insulating member 40 is made up of a cylindrical body with the same diameter as the fire-resistant member 30. In this embodiment, the heat insulating member 40 is superimposed on the fire-resistant member 30 and covered from the outer periphery by the sheet-like member 50, thereby integrating it with the fire-resistant member 30.

[0039] The thermal insulation member 40 is made of a material that has thermal insulation properties (the property of blocking heat) and non-combustibility (the property of not burning). Examples of materials having such properties include glass fibers such as glass wool, mineral fibers such as rock wool, ceramic fibers such as silica wool and alumina wool, carbon fibers, and inorganic fibers such as metal fibers. The thermal insulation member 40 can be formed by molding these materials into a predetermined shape. In this case, the inorganic fibers used as material may be molded while being compressed. The thermal insulation member 40 can be made of, for example, an inorganic fiber layer 41.

[0040] Multiple communication holes 42 are formed through the heat insulating member 40. The multiple communication holes 42 are formed at positions corresponding to the multiple insertion holes 32 of the fire-resistant member 30. In this embodiment, one communication hole 42 is formed in the center of the heat insulating member 40, and seven other communication holes 42 are formed around it at predetermined intervals from each other, for a total of eight communication holes 42. In this embodiment, the multiple communication holes 42 are formed in a circular or oval shape that is slightly larger than the multiple insertion holes 14 of the rear plate 13 at their respective positions. The multiple communication holes 42 communicate with the multiple insertion holes 32 of the fire-resistant member 30, and a long body 9 can be inserted through each of them.

[0041] Some of the multiple communication holes 42 in the heat insulating member 40 are always in communication with the corresponding insertion holes 32 in the fire-resistant member 30. In this embodiment, of the seven communication holes 42 arranged on the outer periphery, three circularly shaped communication holes 42 are always in communication with the corresponding insertion holes 32. On the other hand, the remaining communication holes 42 (the communication hole 42 in the center and the four oval-shaped communication holes 42 arranged on the outer periphery) are configured to communicate with the corresponding insertion holes 32 only when necessary. This configuration is achieved by forming a notch 43 in the relevant part of the heat insulating member 40, and making the part surrounded by the notch 43 (temporary part 44) removable.

[0042] When the long body 9 is actually inserted into the insulation member 40, the communication hole 42 can be revealed by removing the temporary section 44 in the insulation member 40 corresponding to the insertion position. In this embodiment, in order to allow for use as is during construction, communication holes 42 for three long bodies 9, which are inserted in most cases, are formed in advance. However, the balance between the number of holes formed in advance and the number of temporary sections 44 left may be changed as appropriate. Alternatively, temporary sections 44 may be left in all positions, and all communication holes 42 may be revealed when needed.

[0043] The sheet-like member 50 covers the fire-resistant member 30 and the heat-insulating member 40 from the outer periphery. The sheet-like member 50 is attached across the fire-resistant member 30 and the heat-insulating member 40, integrating them together. The sheet-like member 50 can be used without particular limitations as long as it is a thin film sheet that can be wound around the fire-resistant member 30 and the heat-insulating member 40, but it is preferable that it is non-combustible, and in this embodiment, a non-combustible thin film sheet 51 is used. Examples of non-combustible thin film sheets 51 constituting the sheet-like member 50 include aluminum glass cloth sheets, aluminum kraft sheets, glass cloth sheets, and alumina cloth sheets.

[0044] The functional member 60 is constructed separately from the integrated plate member 10, intervening member 20, fire-resistant member 30, heat-insulating member 40, and sheet-like member 50. The functional member 60 can be filled into the through-hole 8H adjacent to the heat-insulating member 40. The functional member 60 may provide functions such as smoke blocking, sound insulation, odor prevention, and vibration damping. Depending on the required function, the functional member 60 may be formed from, for example, foam material, rubber material, deodorant, odor remover, and putty. In this embodiment, the functional member 60 is composed of a rubber sponge layer 61 having a smoke-blocking function, but it may also be made of putty or the like.

[0045] The functional member 60 has multiple through holes 62 formed through it. The multiple through holes 62 are formed at positions corresponding to the multiple communication holes 42 of the heat insulating member 40. In this embodiment, one through hole 62 is formed in the center of the functional member 60, and seven through holes 62 are formed around it at predetermined intervals from each other, for a total of eight through holes 62. In addition, each through hole 62 is connected to another through hole 62 or to the outer edge of the functional member 60 by a slit 63 (see Figure 2).

[0046] To implement fire protection measures using the fire protection unit 1, first, the number of elongated members 9 to be inserted through the through-holes 8H of the compartment 8 is confirmed. If the number of these elongated members 9 is greater than the number of communication holes 42 pre-formed in the insulation member 40, the remaining communication holes 42 are revealed by removing the temporary section 44 along the cutouts 43. Then, the integrated plate member 10, intervening member 20, fire-resistant member 30, insulation member 40, and sheet-like member 50 are inserted into the through-holes 8H of the compartment 8 from one side of the compartment 8, with the insulation member 40 leading. The plate member 10 is then screwed in place while in contact with the compartment 8.

[0047] Next, multiple elongated bodies 9 are inserted into their respective through-holes 12, 14, 22, 32 and communication hole 42. At this time, the inner surface of each set of through-holes 14 and the outer surface of the elongated body 9 are in close contact, sealing the space between them. Also, within the through-hole 8H, the fire-resistant member 30 and the heat-insulating member 40 are naturally positioned on the outside of the multiple elongated bodies 9.

[0048] Finally, from the other side of the partition 8, the functional member 60 is fitted into the through hole 8H of the partition 8, while ensuring that the multiple elongated members 9 pass through the slit 63 and fit into the corresponding through holes 62.

[0049] Thus, with the fire protection unit 1 of this embodiment, many parts can be handled as a single unit, making installation easy. The time required for fire protection measures can be significantly reduced compared to conventional methods.

[0050] When a fire occurs on one side of the compartment 8, the synthetic resin insulation material constituting the elongated body 9 may be destroyed by the heat of the flames. However, the heat-expandable fire-resistant material constituting the fire-resistant member 30 expands due to the heat and can seal the gap created by the destruction of the insulation material. Therefore, the spread of fire through the through-hole 8H of the compartment 8 can be prevented.

[0051] Here, the thermal expansion of the heat-expandable fire-resistant material is restricted radially by the inner surface of the through-hole 8H, causing the fire-resistant member 30 to expand axially, increasing its overall thickness. As a result, the heat-insulating member 40 and the functional member 60 are pushed axially by the expanded fire-resistant member 30, and the functional member 60, which is installed independently of the other parts, may, in some cases, fall out of the through-hole 8H.

[0052] In this embodiment, the foamed resin layer 21 constituting the intervening member 20 melts and disappears, as shown in the middle of Figure 5, before the heat of the flames during a fire causes the heat-expandable fire-resistant material to expand. The disappearance of this foamed resin layer 21 creates a buffer space B that can receive at least a portion of the heat-expandable fire-resistant material that expands afterward. This buffer space B is formed between the plate member 10 and the fire-resistant member 30 as a disc-shaped space corresponding to the outer shape of the intervening member 20. It should be noted that the foamed resin layer 21 does not necessarily need to disappear completely; it is acceptable if a portion remains unburned.

[0053] In this embodiment, the foamed resin layer 21 of the fire protection unit 1 constitutes a potential buffer space B.

[0054] When a fire occurs, a buffer space B is formed between the plate member 10 and the fire-resistant member 30, causing the fire-resistant member 30 to expand while filling the buffer space B, as shown in the lower part of Figure 5. This minimizes the axial movement of the heat-insulating member 40 and the functional member 60. Consequently, the likelihood of the functional member 60 remaining in the through-hole 8H of the compartment 8 during a fire is increased, allowing the functional member 60 to perform its function properly.

[0055] [Other Embodiments] (1) In the above embodiment, a configuration was described as in which a buffer space B is formed between the plate member 10 and the fire-resistant member 30 when the foamed resin layer 21 disappears in the event of a fire (i.e., the fire protection unit 1 has a potential buffer space B). However, the configuration is not limited to such a configuration, and a buffer space B may be provided between the plate member 10 and the fire-resistant member 30 from the outset. To provide a buffer space B from the outset, for example, the intervening member 20 may be formed in the shape of a cutout or a ring, or the surface of the plate member 10 on the side facing the fire-resistant member 30 may be recessed. In the latter case, the fire-resistant member 30 is in direct contact with the plate member 10 and integrated with it.

[0056] (2) In the above embodiment, an example was described in which the intervening member 20 for forming the buffer space B in the event of a fire is composed of a foamed resin layer 21. However, the intervening member 20 may be composed of, for example, a non-foamed resin layer, and the embodiment is not limited to such a configuration.

[0057] (3) In the above embodiment, a configuration was described as in which the fire-resistant member 30 and the heat-insulating member 40 are covered from the outer periphery by a sheet-like member 50 and integrated together. However, the configuration is not limited to such a configuration, and for example, the fire-resistant member 30 and the heat-insulating member 40 may be integrated via, for example, an adhesive layer or a bonding layer, or an adhesive layer or the like may be used in combination with the sheet-like member 50.

[0058] (4) In the above embodiment, a configuration in which the sheet-like member 50 covers only the fire-resistant member 30 and the heat-insulating member 40 from the outer periphery was described as an example. However, the configuration is not limited to such a configuration, and for example, the sheet-like member 50 may cover the intervening member 20, the fire-resistant member 30 and the heat-insulating member 40 from the outer periphery.

[0059] (5) In the above embodiment, a configuration in which a functional member 60 is installed inside the through hole 8H separately from the integrated intervening member 20, fire-resistant member 30, heat-insulating member 40, and sheet-like member 50 was described as an example. However, the configuration is not limited to such one, and the functional member 60 does not necessarily have to be installed. In such cases, a filler material such as putty, caulking material, inorganic fiber, and foam material may be filled in a later process at a position adjacent to the heat-insulating member 40 inside the through hole 8H.

[0060] (6) In the above embodiment, an example was described in which some of the multiple communication holes 42 of the heat insulating member 40 are made visible only when necessary by removing the temporary portion 44 surrounded by the notches 43. However, the heat insulating member 40 is not limited to such a configuration, and may have all of the communication holes 42 from the beginning. In such a case, if the elongated body 9 is not inserted through some of the communication holes 42, the unused communication holes 42 may be filled with an irregularly shaped heat insulating material in a later process.

[0061] (7) In the above embodiments, the description mainly assumed a configuration in which a plurality of through holes 62 are always formed in the functional member 60. However, the description is not limited to such a configuration, and the through holes 62 may be made available when needed by making the portion surrounded by the notch removable, as in the case of some of the communication holes 42 in the heat insulating member 40 in the above embodiments.

[0062] (8) In the above embodiment, a configuration in which some of the insertion holes 14 in the rear plate 13 and some of the communication holes 42 in the heat insulating member 40 are formed in an oval shape was described as an example. However, the configuration is not limited to such a configuration, and all of the insertion holes 14 in the rear plate 13 and the communication holes 42 in the heat insulating member 40 may be formed in a circular shape. Furthermore, the shapes of each insertion hole 12, 14, 22, 32 and communication hole 42 may be changed as appropriate.

[0063] (9) In the above embodiment, a configuration in which the front plate 11 is made of metal was described as an example. However, the configuration is not limited to such a configuration, and the front plate 11 may be made of other materials such as resin or ceramic.

[0064] (10) In the above embodiment, a configuration in which the plate member 10 (front plate 11 and rear plate 13) is formed in a shape combining two straight sections and two arc sections was described as an example. However, the configuration is not limited to such a configuration, and the plate member 10 may be formed in a circular shape, or in a shape in which a part of the circle (one place or three or more places) is cut into a predetermined shape. The plate member 10 (front plate 11 and rear plate 13) may also be formed in other shapes, such as an ellipse or a polygon.

[0065] (11) In the above embodiment, a configuration in which the plate member 10, the intervening member 20, the fire-resistant member 30, and the heat-insulating member 40 are integrated in this order was described as an example. However, the configuration is not limited to this, and the order of the fire-resistant member 30 and the heat-insulating member 40 may be reversed, and they may be integrated in the order of plate member 10 → intervening member 20 → heat-insulating member 40 → fire-resistant member 30. A fire protection unit 1 with such a configuration is also disclosed herein, in which case the fire protection unit 1 has the configuration shown below.

[0066] A fire protection unit 1 for making a through-hole 8H formed in a building compartment 8 through which at least one elongated body 9 is inserted into a fire-resistant structure, A plate member 10 is positioned to cover the through hole 8H and fixed to the partition body 8, An intervening member 20 formed of a foamed resin layer and integrated with the surface of the plate member 10 on the through-hole 8H side, An insulating member 40 is integrated with the intervening member 20 on the opposite side of the plate member 10, A fire-resistant member 30 formed of a heat-expandable fire-resistant material and integrated with the heat-insulating member 40 on the opposite side of the intervening member 20, It is equipped with.

[0067] (12) The configurations disclosed in each of the above-described embodiments (including the above-described embodiments and other embodiments; the same applies hereinafter) can be applied in combination with configurations disclosed in other embodiments, insofar as they do not cause a conflict. With respect to other configurations, the embodiments disclosed herein are illustrative in all respects and can be modified as appropriate without departing from the spirit of the disclosure. [Explanation of symbols]

[0068] 1. Fire prevention unit 8 compartments 8H through hole 9 Long body 10 Plate members 12 Through hole 14 Through hole 20 Intervening member 21 Foamed resin layer 22 Through hole 30 Fire-resistant materials 31 Thermally expandable fireproof material layer 32 Through hole 40 Insulation material 42 Communication hole 43 cuts 50 Sheet-like member 60 Functional Components B Buffer space

Claims

1. A fire protection unit for making a through-hole formed in a building compartment through which at least one elongated body is inserted into a fire-resistant structure, A plate member positioned to cover the through hole and fixed to the partition body, A fire-resistant member formed of a heat-expandable fire-resistant material, which is integrated with the plate member either in direct contact with the surface of the through-hole side or via another member, The fire-resistant member comprises a heat-insulating member integrated with the plate member on the opposite side, A fire protection unit having a buffer space between the plate member and the fire-resistant member that can accommodate at least a portion of the thermally expandable fire-resistant material that expands due to heat during heating.

2. The fire protection unit according to claim 1, wherein the buffer space is composed of a foamed resin layer interposed between the plate member and the fire-resistant member.

3. The fire protection unit according to claim 1 or 2, wherein the fire-resistant member and the heat-insulating member are covered from the outer periphery by a sheet-like member.

4. The fire protection unit according to claim 1 or 2, further comprising a functional member adjacent to the heat insulating member that can be filled into the through hole.

5. The plate member and the fire-resistant member each have a plurality of insertion holes through which the elongated body is inserted, which are in communication with each other. The fire protection unit according to claim 1 or 2, wherein the heat insulating member has a communication hole that communicates with at least one of the plurality of insertion holes, and the portion corresponding to the remaining insertion holes is configured to be removable by a notch.

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