JP6901527B2 - Cover member and compartment penetration structure for compartment penetration - Google Patents

Description

The present invention relates to a cover member for a compartment penetrating portion and a compartment penetrating portion structure.

Buildings such as apartment houses, office buildings, schools, etc., floors, walls, and other compartments may be provided with through holes for installing cables, pipes, and other inserts. For the subsequent fireproof treatment of the through hole, conventionally, for example, when the insert is a long body support rack, a lid member for fireproof measures that closes the gap between the through hole of the compartment and the insert is provided. , A heat-expandable gap filling material for refractory measures, which is formed by enclosing a heat-expandable heat-resistant sealing material in a bag body, is provided in a state of being sandwiched between an insert (Patent Document 1), a through hole and a cable. -Although a molded filler was placed in the gap between the pipes (Patent Document 2), the structure of these compartment penetrations creates gaps between the inserts, resulting in insufficient fire resistance and insertion. It was necessary to fill the gap between the objects with a fireproof sealing material, which took a long time to construct.

JP 2010-121330 Patent No. 4908907

An object of the present invention is to provide a cover member and a compartment penetrating portion structure for a compartment penetrating portion which can be easily constructed in a short time and sufficiently exhibits fire resistance.

In order to achieve the above object, the present inventors wind a band portion of a cover member for a skirt-like compartment penetrating portion to which a heat-expandable filler is attached around cables and pipes, and wind the band portion. It was found that by arranging the annular main body attached to the floor so as to cover the portion of the building compartment such as the floor that forms the through hole, the fireproof structure of the compartment penetration can be easily produced in a short time. , The present invention has been completed.

That is, the present invention is as follows.
[1] A cover member for a compartment penetrating portion in which a through hole is provided in a compartment of a building, which is attached to a band portion and the band portion at the first end, and is attached to the band portion from the first end to the first end. A cover member including an annular body that expands radially toward the other end on the opposite side of the portion and a thermally expandable filler attached to or near the first end of the band portion or the annular body. ..
[2] The cover member according to Item 1, further comprising a drawing means for shortening the length of the band portion.
[3] The cover member according to Item 1, wherein the annular body contains a refractory material selected from an aluminum glass cloth, a glass non-woven fabric, and a refractory sheet.
[4] A partition penetrating portion structure in which cables and pipes penetrate through a through hole provided in a compartment of a building, and a band portion of a cover member according to any one of Items 1 to 3 is a cable. -Wrapped around the pipes, the second end of the annular body of the cover member according to any one of Items 1 to 3 is arranged so as to cover the portion of the compartment that forms the through hole. Section penetration structure characterized by being present.
[5] A cover member for a compartment penetrating portion in which a through hole is provided in a compartment of a building, which is attached to the band portion and the band portion at the first end portion, and is formed into an annular shape by aligning both side surfaces. A cover member including a main body and a heat-expandable filler attached to a band portion or the first end portion of the main body.

According to the present invention, the cover member for the compartment penetrating portion has a band portion to which the heat-expandable filler is attached and an annular main body attached to the band portion to which the heat-expandable filler is attached. By wrapping the part around cables and pipes and arranging the end of the annular body so as to cover the part of the compartment that forms the through hole, the heat-expandable filler expands during heating such as in a fire. Therefore, the inside of the cover member is closed, and the spread of fire to the outside of the cover member passing through the through hole can be prevented or suppressed.

(A) Schematic perspective view for explaining the cover member for the compartment penetrating portion of the first embodiment of the present invention, (b) end view. FIG. 6 is a schematic cross-sectional view illustrating the structure of the section penetration portion. FIG. 6 is a schematic cross-sectional view illustrating another example of the section penetrating portion structure. (A) Front view of the support member, (b) Side view. The schematic perspective view which shows the detail of a plate-shaped member. FIG. 6 is a schematic cross-sectional view illustrating another example of the section penetrating portion structure. The schematic perspective view which shows another example of a cover member. The schematic perspective view which shows another example of a cover member. The schematic perspective view which shows another example of a cover member. The schematic perspective view which shows another example of a cover member. The schematic perspective view which shows another example of a cover member.

The cover member and the compartment penetrating portion structure for the compartment penetrating portion of the first embodiment of the present invention will be described with reference to FIGS. 1 and 2.

Referring to FIG. 1A, the cover member 1 for the compartment penetrating portion includes a long band-shaped band portion 2 and an annular main body 4 attached to the band portion 2 at the first end portion 5. Since the annular body 4 has a plurality of folded folds 6, that is, pleats, it can be expanded in the radial direction from the first end portion 6 toward the second end portion 7 opposite to the first end portion 6.

A plurality of heat-expandable fillers 10 are arranged at the first end portion 5 of the annular main body 4 at intervals and parallel to the extending direction of the band portion 2. As shown in FIG. 1 (b), the plurality of heat-expandable fillers 10 are arranged in an annular shape on the inner side in the radial direction of the annular main body 4.

Returning to FIG. 1A, at the positions of the two end portions 3 of the band portion 2, the annular main body 4 is provided with a notch 8 halfway through the folded folds 6, and the cover member 1 is connected to the cable as described later. -When moving along the pipes 16, it is easy to move. The two ends 3 of the band portion 2 act as squeezing means for shortening the length or diameter of the band portion 2, and are connected to each other when the cover member 1 is wound in a predetermined position on cables and pipes. ..

The material of the band portion 2 may be formed from any refractory material, and examples thereof include a heat-expandable refractory material, an aluminum glass cloth, a glass non-woven fabric, and a refractory sheet. In one embodiment, the band portion 2 is a sheet-like member composed of a heat-expandable refractory material containing a heat-expandable layered inorganic substance and an inorganic filler as a resin component.

Examples of the resin component include a thermoplastic resin, a thermosetting resin, a rubber substance, and a combination thereof. Examples of the thermoplastic resin include a polypropylene resin, a polyethylene resin, a poly (1-) butene resin, and a polypentene. Polyolefin-based resins such as based resins, polystyrene-based resins, acrylonitrile-butadiene-styrene (ABS) -based resins, polycarbonate-based resins, polyphenylene ether-based resins, acrylic resins, polyamide-based resins, polyvinyl chloride-based resins, phenol-based resins, Examples thereof include synthetic resins such as polyurethane resins and polyisobutylene.

Examples of the thermosetting resin include polyurethane, polyisocyanate, polyisocyanurate, phenol resin, epoxy resin, urea resin, melamine resin, unsaturated polyester resin, and polyimide.

Rubber substances include natural rubber, isoprene rubber, butadiene rubber, 1,2-polybutadiene rubber, styrene-butadiene rubber, chloroprene rubber, nitrile rubber, butyl rubber, chlorinated butyl rubber, ethylene-propylene rubber, chlorosulfonated polyethylene, acrylic rubber. , Epichlorohydrin rubber, polyvulverable rubber, non-vulverable rubber, silicon rubber, fluororubber, urethane rubber and other rubber substances.

As these synthetic resins and / or rubber substances, one kind or two or more kinds can be used.

Among these synthetic resins and / or rubber substances, those having flexible and rubber-like properties are preferable. Those having such properties can be highly filled with an inorganic filler, and the obtained resin composition becomes flexible and easy to handle. In order to obtain a more flexible and easy-to-handle resin composition, a non-vulcanized rubber such as butyl or a polyethylene-based resin is preferably used. Further, an epoxy resin is preferable from the viewpoint of increasing the flame retardancy of the resin itself and improving the fire protection performance.

Next, the heat-expandable layered inorganic substance will be described. The heat-expandable layered inorganic material expands when heated, but the heat-expandable layered inorganic material is not particularly limited, and examples thereof include vermiculite, kaolin, mica, and heat-expandable graphite. Thermally expandable graphite is a conventionally known substance, in which powders such as natural scaly graphite, thermally decomposed graphite, and kiss graphite are mixed with inorganic acids such as concentrated nitric acid, nitric acid, and selenic acid, and concentrated nitric acid, perchloric acid, and excess. A graphite interlayer compound was produced by treatment with a strong oxidizing agent such as chlorate, permanganate, dichromate, dichromate, hydrogen peroxide, etc., and the layered structure of carbon was maintained. It is a kind of raw crystalline compound.

As the heat-expandable graphite obtained by the acid treatment as described above, it is preferable to use one neutralized with ammonia, an aliphatic lower amine, an alkali metal compound, an alkaline earth metal compound or the like.

The particle size of the heat-expandable graphite is preferably 20 to 200 mesh. When the particle size is smaller than 200 mesh, the degree of expansion of graphite is small and a sufficient expansion heat insulating layer cannot be obtained, and when the particle size is larger than 20 mesh, there is an advantage that the degree of expansion of graphite is large, but it is blended with the resin. In some cases, the dispersibility deteriorates and the physical properties deteriorate. Examples of commercially available products of heat-expandable graphite include "GREP-EG" manufactured by Tosoh Corporation and "GRAFGUARD" manufactured by GRAFTECH.

Next, the above-mentioned inorganic filler will be described.

When the expanded heat insulating layer is formed, the inorganic filler increases the heat capacity and suppresses heat transfer, and also acts as an aggregate to improve the strength of the expanded heat insulating layer. The inorganic filler is not particularly limited, and for example, metal oxides such as alumina, zinc oxide, titanium oxide, calcium oxide, magnesium oxide, iron oxide, tin oxide, antimony oxide, and ferrites; calcium hydroxide, magnesium hydroxide. Water-containing inorganic substances such as aluminum hydroxide and hydrotalcite; metal carbonates such as basic magnesium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate, strontium carbonate and barium carbonate can be mentioned.

In addition to these, as inorganic fillers, calcium salts such as calcium sulfate, gypsum fiber, and calcium silicate; silica, diatomaceous soil, dosonite, barium sulfate, talc, clay, mica, montmorillonite, bentonite, active white clay, and sepiolite. , Imogolite, sericite, glass fiber, glass beads, silica-based balun, aluminum nitride, boron nitride, silicon nitride, carbon black, graphite, carbon fiber, carbon balun, charcoal powder, various metal powders, potassium titanate, magnesium sulfate " Examples thereof include "MOS" (trade name), lead zirconate titanate, aluminum borate, molybdenum sulfide, silicon carbide, stainless fiber, zinc borate, various magnetic powders, slag fiber, fly ash, and dehydrated sludge. These inorganic fillers may be used alone or in combination of two or more.

The particle size of the inorganic filler is preferably 0.5 to 100 μm, more preferably 1 to 50 μm. When the amount of the inorganic filler added is small, the dispersibility greatly affects the performance, so that the inorganic filler has a small particle size, but if it is less than 0.5 μm, secondary aggregation occurs and the dispersibility deteriorates. When the amount added is large, the viscosity of the resin composition increases and the moldability decreases as the high filling progresses, but the viscosity of the resin composition can be decreased by increasing the particle size. Those with a large diameter are preferable. If the particle size exceeds 100 μm, the surface properties of the molded product and the mechanical properties of the resin composition deteriorate.

Examples of the inorganic filler include "Heidilite H-31" (manufactured by Showa Denko) with a particle size of 18 μm for aluminum hydroxide, "B325" (manufactured by ALCOA) with a particle size of 25 μm, and calcium carbonate. Examples thereof include 1.8 μm “Whiten SB Red” (manufactured by Bikita Powder Industry Co., Ltd.) and “BF300” (manufactured by Bikita Powder Industry Co., Ltd.) having a particle size of 8 μm.

Further, the heat-expandable resin composition constituting the heat-expandable refractory material may further contain a phosphorus compound in addition to the above-mentioned components in order to increase the strength of the expansion heat insulating layer and improve the fire protection performance. The phosphorus compound is not particularly limited, and for example, various phosphoric acid esters such as red phosphorus; triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresil diphenyl phosphate, xylenyl diphenyl phosphate; sodium phosphate, Metal phosphates such as potassium phosphate and magnesium phosphate; ammonium polyphosphates; compounds represented by the following chemical formula (1) can be mentioned. Of these, red phosphorus, ammonium polyphosphate, and the compound represented by the following chemical formula (1) are preferable from the viewpoint of fire protection performance, and ammonium polyphosphate is more preferable from the viewpoint of performance, safety, cost, and the like. ..

In the chemical formula (1), R1 and R3 represent hydrogen, a linear or branched alkyl group having 1 to 16 carbon atoms, or an aryl group having 6 to 16 carbon atoms. R2 is a hydroxyl group, a linear or branched alkyl group having 1 to 16 carbon atoms, a linear or branched alkoxyl group having 1 to 16 carbon atoms, an aryl group having 6 to 16 carbon atoms, or a carbon number of carbon atoms. Represents 6 to 16 aryloxy groups.

As the red phosphorus, commercially available red phosphorus can be used, but from the viewpoint of moisture resistance and safety such as not spontaneously igniting during kneading, those in which the surface of the red phosphorus particles is coated with a resin are preferably used. Ammonium polyphosphate is not particularly limited, and examples thereof include ammonium polyphosphate and melamine-modified ammonium polyphosphate. Ammonium polyphosphate is preferably used from the viewpoint of handleability and the like. Examples of commercially available products include "AP422" and "AP462" manufactured by Clariant AG, "FR CROS 484" and "FR CROS 487" manufactured by Budenheim Ibica.

The compound represented by the chemical formula (1) is not particularly limited, and for example, methylphosphonate, dimethyl methylphosphonate, diethyl methylphosphonate, ethylphosphonate, propylphosphonate, butylphosphonic acid, 2-methylpropylphosphonate, t- Butylphosphonic acid, 2,3-dimethyl-butylphosphonate, octylphosphonate, phenylphosphonic acid, dioctylphenylphosphonate, dimethylphosphonate, methylethylphosphonate, methylpropylphosphinic acid, diethylphosphonate, dioctylphosphonate, phenylphosphine Acids, diethylphenylphosphonates, diphenylphosphonates, bis (4-methoxyphenyl) phosphonates and the like can be mentioned. Among them, t-butylphosphonic acid is preferable in terms of high flame retardancy, although it is expensive. The above phosphorus compounds may be used alone or in combination of two or more.

Further, in the resin composition, as long as the physical properties are not impaired, antioxidants such as phenol-based, amine-based and sulfur-based, metal damage inhibitors, antistatic agents, stabilizers, cross-linking agents, lubricants and softeners are added. , Pigments and the like may be added. Further, a general flame retardant may be added, and the fire protection performance can be improved by the combustion suppressing effect of the flame retardant.

The resin composition contains 10 to 350 parts by weight of the heat-expandable layered inorganic substance and 30 to 400 parts by weight of the inorganic filler with respect to 100 parts by weight of the resin component such as the thermoplastic resin or the epoxy resin. Is preferable.

The total amount of the heat-expandable layered inorganic substance and the inorganic filler is preferably in the range of 50 to 600 parts by weight with respect to 100 parts by weight of the resin component.

Such a resin composition expands by heating to form a refractory heat insulating layer. According to this composition, the heat-expandable refractory material expands by heating such as a fire to obtain a required coefficient of thermal expansion, and after expansion, a residue having a predetermined heat insulating performance and a predetermined strength is formed. It is also possible to achieve stable fire protection performance.

When the total amount of the heat-expandable layered inorganic substance and the inorganic filler in the resin composition is 50 parts by weight or more, sufficient fire resistance is obtained by satisfying the residual amount after combustion, and when it is 600 parts by weight or less, it is mechanical. Physical characteristics are maintained.

Further, the resin composition used in the present invention is, if necessary, an antioxidant such as a phenol-based, amine-based, or sulfur-based antioxidant, a metal damage inhibitor, and an antistatic agent, as long as the object of the present invention is not impaired. Additives such as inhibitor, stabilizer, cross-linking agent, lubricant, softener, pigment, tackifier resin, and tackifier such as polybutene and petroleum resin can be included.

The resin composition is obtained by kneading each component of the resin composition using a known device such as a single-screw extruder, a twin-screw extruder, a Banbury mixer, a kneader mixer, a kneading roll, a Raikai machine, and a planetary stirrer. Obtainable.

As the band portion 2, a heat-expandable refractory material is available as a commercially available product. For example, a fire barrier manufactured by Sumitomo 3M Co., Ltd. (a heat-expandable refractory material composed of a resin composition containing chloroprene rubber and vermiculite, expansion Rate: 3 times, thermal conductivity: 0.20 kcal / m · h · ° C), Mijihikat (a heat-expandable refractory material consisting of a resin composition containing a polyurethane resin and a heat-expandable graphite), a coefficient of expansion : 4 times, thermal conductivity: 0.21 kcal / m · h · ° C), thermal expansion refractory materials such as Fiblock manufactured by Sekisui Chemical Co., Ltd. can also be mentioned.

The heat-expandable refractory material is not particularly limited as long as it is insulated by the expansion layer when exposed to a high temperature such as in a fire and the expansion layer has strength, but the heating condition is 50 kW / m2. It is preferable that the volume expansion coefficient after heating for 30 minutes is 3 to 50 times. If the volume expansion coefficient is less than three times, the expansion volume may not sufficiently fill the burned portion of the resin component, and the fire protection performance may deteriorate. On the other hand, if it exceeds 50 times, the strength of the expansion layer is lowered, and the effect of preventing the penetration of the flame may be lowered. More preferably, the coefficient of thermal expansion is in the range of 5 to 40 times, and even more preferably in the range of 8 to 35 times.

The material of the heat-expandable filler 10 may be formed from any heat-expandable material such as a heat-expandable filling putty or a sheet. The material of the heat-expandable filler 10 may be the same as or different from the material of the band portion 2. In one embodiment, the heat-expandable filler 10 is a heat-expandable refractory material containing a heat-expandable layered inorganic substance and an inorganic filler in the resin component described above for the band portion 2.

The material of the annular body 4 may be formed from any refractory material, and in one embodiment the annular body 4 includes a refractory material selected from aluminum glass cloth, glass non-woven fabric, and a refractory sheet.

FIG. 2 shows a compartment penetrating portion structure in which the cover member 1 of FIG. 1 is arranged. The floor 12 as a fire protection compartment of a building is provided with through holes 14 having a substantially rectangular cross section, through which one or a plurality of cables / pipes 16 (12 are shown in the figure) penetrate.

The cables / pipes 16 include, for example, various cables such as power cables and communication cables, various pipes such as water pipes, refrigerant pipes, heat medium pipes, gas pipes, intake / exhaust pipes, the various cables, and the like. Examples thereof include various supports such as a cable rack and a cable case for holding the various pipes. One type or two or more types of cables / pipes 16 can be used. As the cables / pipes 16, those made of resin, those made of metal, or the like can be used, and the material thereof is not particularly limited.

When arranging the cable / piping 16 and the cover member 1 in the through hole 14, usually, first, the cable / piping 16 is arranged in the through hole 14, and the cover member 1 is arranged at the end of the cable / piping 16. The cover member 1 is moved to the vicinity of the through hole 14 along the cables / pipes 16.

In the cover member 1, the band portion 2 of the cover member 1 is wound around the cables / pipes 16. At this time, the two end portions 3 shown in FIG. 1 are connected to each other so that the cover member 1 is hooked on the cables / pipes 16. The annular body 4 of the cover member 1 is expandable in the radial direction, and when placed on the through hole 2, the diameter becomes larger than the diameter of the through hole 2 at the position of the second end 7 of the annular body 4. The annular body 4 is expanded. The second end portion 7 of the annular main body 4 of the cover member 1 is fixed to the floor 12 at a plurality of locations in the circumferential direction by metal fasteners 18. That is, the second end portion 7 of the annular main body 4 is arranged so as to cover the portion of the floor 12 that partitions the through hole 14. Therefore, in the event of a fire, the band portion 2 and the heat-expandable filler 10 block the inside of the cover member 1, and the band portion 2, the heat-expandable filler 10, and the annular body 4 cover the through hole 14. It acts to block the flame, and can prevent or suppress the penetration of the flame from the through hole 14 to the outside of the cover member 1.

The cover member and the compartment penetrating portion structure of the first embodiment described above have the following effects.

A plurality of heat-expandable fillers 10 in which the cover member 1 is attached to the band portion 2, the annular main body 4 attached to the band portion 2 at the first end portion 5, and the second end portion 7 of the annular main body 4. Since the band portion 2 and the heat-expandable filler 10 expand due to the heat of the fire, the inside of the cover member 1 is blocked by the heat of the fire, and the flame from the through hole 14 to the outside of the cover member 1 is provided. Penetration can be easily prevented or suppressed in a short time, and the fire resistance of the cover member 1 is sufficiently exhibited.
-By connecting the two ends 3 of the cover member 1, the cover member 1 can be wound around the cables / pipes 16, and the cover member 1 can be easily attached to the cables / pipes 16.

Up to this point, the present invention has been described by taking the first embodiment as an example, but the present invention is not limited to this, and various modifications such as the following are possible.
-In the first embodiment, the heat-expandable filler 10 is shown to be attached to the band portion 2 in advance, but it is provided as a separate body from the band portion 2 and may be attached to the band portion 2 at the time of construction. .. As described above, the cover member in the form of the kit in which the band portion 2 and the annular main body 4 and the heat-expandable filler 10 are separated from each other is also included in the scope of the present invention.
• As shown in FIG. 3, the through holes may be provided with an additional fire resistant structure in order to enhance the fire resistance of the compartment penetration structure. That is, in FIG. 3, as shown in more detail in FIG. 4, a portion 24b that is hooked on the floor 12 at the upper end 24a and extends in the longitudinal direction extends along the wall forming the through hole 14, and the lower end 24c extends at the upper end 24a. A plurality of support members 24 extending in the opposite direction to the above and supporting the plate-shaped member 20 are provided at an annular distance along the wall forming the partition, and the plate-shaped member 20 through which the cables and pipes 16 are inserted is provided. Is fitted in the through hole 14 in a state of being supported by the support member 24. The support member 24 is, for example, a metal fitting made of metal. Since the upper end of the support member 24 is hooked on the floor 12 in this way, the plate-shaped member 20 is prevented from falling under the floor 12 in the through hole 14, and the plate-shaped member 20 is formed in the through hole 14. The flame spreads and heat is prevented from spreading from under the floor to above the floor or vice versa through the through hole 14.

FIG. 5 is a schematic perspective view showing the details of the plate-shaped member 20. The material constituting the plate-shaped member 20 is not particularly limited, but for example, rock wool, glass wool, calcium silicate, and the cover member 2 and the heat-expandable filler 10 are thermally expanded to the same or different resin components as described above. Examples thereof include a heat-expandable refractory material containing synthetic graphite and an inorganic filler. A sealing material 22 is provided on the notch 21 corresponding to the cable / piping 16 of the plate-shaped member 20, and a set of plate-shaped members 20 are engaged with each other so as to sandwich the cable / piping 16.
As shown in FIG. 6, the position where the plate-shaped member 20 is arranged is not limited to the inside of the through hole 14 as shown in FIG. 3, and the overall dimension of the plate-shaped member 20 is made larger than that of the through hole 14. It may be placed close to the opening end 15 of the through hole 14 and on the floor 12. In this case, it is preferable to hit the plate-shaped member 20 at several places with metal fittings 19 or the like to fix the plate-shaped member 20 to the floor 12 so that the position of the plate-shaped member 20 does not shift with respect to the floor 12. When the plate-shaped member 20 is close to the through hole 14, the plate-shaped member 20 is directly in contact with the through hole 14 or is located near the through hole 14 to the extent that the through hole 14 can be closed even if the plate-shaped member 20 is not in direct contact with the through hole 14. Refers to what you are doing.
-In order to reinforce the band portion 2 of the cover member 1, as shown in FIG. 3, an annular metal, a coated metal, a resin composition, or the like is formed on the radial outer side, the inner side, or the radial inner side of the band portion 2. Further fasteners 25 may be applied.
-The second end portion 7 of the annular main body 4 of the cover member 1 may be fixed by a plurality of magnets 26 as shown in FIG. 7 instead of being fixed to the floor 12 by the fastener 18. When the support member 24, which is a metal fitting as shown in FIG. 3, is arranged in the through hole 14, the magnet 26 sticks to the support member 24, so that the annular body 4 can be formed without making a hole in the floor 12. If the magnet 26 is placed on the annular body 4 at the position of the second end 7, the second end 7 of the annular body 4 is indirectly fixed to the floor 12, and the annular body 4 is fixed. Can be fixed to the floor 12.
-In addition to the embodiment shown in FIG. 1, the configuration of the end portion 3 of the band portion 2 is such that only one end portion 3 is lengthened and the other end portion 3 or the other band portion is formed as shown in FIG. A fixing means 27 such as a hook, a pin, or a screw may be fixed at the position 2, or as shown in FIG. 9, the metal wire 28 is arranged along the longitudinal direction of the band portion 2, and the metal wire 28 is placed at both ends. The length of the band portion 2 may be shortened by pulling with a wire, or one end portion 3 may be fixed at the position of the other end portion 3 or the other band portion 2 by an adhesive means (not shown) such as an adhesive. It may be attached. These means also act as squeezing means for shortening the length or diameter of the band portion 2.
-As shown in FIG. 10, the notch 8 of the annular body 4 may be omitted.
As shown in FIG. 11, the main body 30 of the cover member 1 does not have to be annular. In this example, the cover member 1 is attached to the band portion 2 and the band portion 2 at the first end portion 31, and the main body 30 is formed in an annular shape by aligning both side surfaces 32, and the band portion 2 or the first main body 30. It includes a heat-expandable filler 10 attached to the end 31. Both side surfaces 32 of the main body 30 connect one or more lateral strip-shaped members 34 (six in the figure) attached to both side surfaces 32, for example, made of the same or different refractory material as the band portion 2 or the annular main body 4. It is made into a ring. Preferably, the band portion 2 has a plurality of folded folds 35, and when the side surfaces 32 are combined to form an annular shape, the band portion 2 is formed from the first end portion 31 to the second end portion 33 opposite to the first end portion 31. It is expandable in the radial direction.
-The band portion 2 may be bundled in an annular shape on the band portion 2 along the extending direction of the band portion 2 by an insulator-shaped metal binding (metal tie) or the like.
-The fire protection compartment is not limited to the floor 12, and may be a wall, a ceiling, a partition wall, a plate material, or the like. The structure of the fireproof compartment includes a concrete structure, a lightweight aerated concrete (ALC) structure, a hollow extruded cement board (ECP) structure, a hollow concrete structure, a support member made of wood, synthetic resin, metal, etc., and one of them. Alternatively, a structure in which a plurality of components are combined can be mentioned.
-In the first embodiment, since the shape of the through hole 2 is a substantially circular cross section, the cover member 10 is also shown to expand in a substantially circular cross section, but the cross section shape of the cover member 10 matches the shape of the through hole 2. It can be changed to a ring shape as appropriate.

1 ... Cover member, 2 ... Band part, 3 ... End part of band part as drawing means, 4 ... Ring body, 5 ... Second end part of ring body, 7 ... Second end part as other end of ring body 10, ... Thermally expandable filler, 12 ... Floor as a compartment, 14 ... Through hole, 16 ... Cables / pipes, 28 ... Metal wire as drawing means, 30 ... Main body of cover member. 31 ... First ends of the main body 31, 32 ... Both sides of the main body.

Claims (4)

It is a section penetrating portion structure, and the section penetrating portion structure has a section body of a building provided with a through hole, cables and pipes inserted through the through hole, and a cover member.
The cover member has a band portion and an annular body, and has an annular body.
The annular body has a first end and a second end opposite to the first end, and is attached to the band at the first end, from the first end to the first. It is configured to be radially expandable towards the two ends.
The band portion of the cover member is wound around the cables and pipes, and the band portion is wound around the cables and pipes.
A plate-shaped member is provided between the band portion of the cover member and the compartment in contact with the compartment, and the plate- shaped member is a refractory plate-shaped member through which the cables and pipes are inserted and the through hole is closed. It is a member
The second end of the annular body is fixed to the plate-shaped member,
A compartment penetrating structure in which the band portion or the first end portion of the annular body or the vicinity thereof is provided with a heat-expandable filler around the cables and pipes. It is a section penetrating portion structure, and the section penetrating portion structure has a section body of a building provided with a through hole, cables and pipes inserted through the through hole, and a cover member.
The cover member has a band portion and a main body, and has a band portion and a main body.
The main body has a first end portion and a second end portion opposite to the first end portion, and is attached to the band portion at the first end portion.
The band portion is wound around the cables and pipes, and is wound around the cables and pipes.
A plate-shaped member is provided between the band portion of the cover member and the compartment in contact with the compartment, and the plate- shaped member is a refractory plate-shaped member through which the cables and pipes are inserted and the through hole is closed. It is a member
The second end of the main body is fixed to the plate-shaped member, and both side surfaces of the main body are combined to form an annular shape.
A compartment penetrating structure in which the band portion or the first end portion of the main body or the vicinity thereof is provided with a heat-expandable filler around the cables and pipes. The compartment penetrating portion structure according to claim 1 or 2, further comprising a drawing means for shortening the length of the band portion. The compartment penetrating structure according to claim 1, wherein the annular body contains a refractory material selected from an aluminum glass cloth, a glass non-woven fabric, and a refractory sheet.

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