WO2020235549A1 - 耐火部材、防火構造体および防火構造体の施工方法 - Google Patents

耐火部材、防火構造体および防火構造体の施工方法 Download PDF

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Publication number
WO2020235549A1
WO2020235549A1 PCT/JP2020/019751 JP2020019751W WO2020235549A1 WO 2020235549 A1 WO2020235549 A1 WO 2020235549A1 JP 2020019751 W JP2020019751 W JP 2020019751W WO 2020235549 A1 WO2020235549 A1 WO 2020235549A1
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WO
WIPO (PCT)
Prior art keywords
tubular body
tongue
foam
shaped piece
fireproof
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/019751
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
有 秀島
和哉 安東
英史 小澤
大志郎 森
理子 大長
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP2020560426A priority Critical patent/JP7479298B2/ja
Priority to EP20809057.1A priority patent/EP3974033A4/en
Publication of WO2020235549A1 publication Critical patent/WO2020235549A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/065—Physical fire-barriers having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • F16L5/04—Sealing to form a firebreak device
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • H02G3/0406—Details thereof
    • H02G3/0412—Heat or fire protective means

Definitions

  • the present invention relates to, for example, a fireproof member for ensuring fireproof performance for a penetrating part such as a pipe or a cable to a section.
  • pipes and cables (hereinafter, may be simply referred to as long bodies) may be laid in each room divided by the section. In this case, for example, if a fire breaks out in one of the rooms, the fire may spread to the entire building along the long body and cause great damage.
  • the inner surface of the foam is provided with a substantially tubular main body, a heat-expandable member provided on the inner surface of the main body, and a foam provided on the inner peripheral surface of the main body and the heat-expandable member.
  • a fireproof member on which an uneven shape is formed for example, Patent Document 2.
  • Patent Document 2 if the foam is arranged around the elongated body and the heat-expandable member is arranged on the outer periphery thereof, it is desired to arrange the elongated body particularly in a through hole having a large diameter. It may be difficult to obtain fire resistance. For example, when the diameter of the through hole is large, the distance from the thermally expandable member to the long body becomes long, so that a larger amount of expansion is required to close the through hole. Therefore, it takes time to close the through hole, and more thermally expandable members are required.
  • Patent Document 2 is excellent in mountability and can secure high fire resistance performance for through holes having a diameter smaller than a predetermined value, but the main body, the heat-expandable member, and foaming Since it is composed of a body, the number of parts increases, resulting in an increase in cost and weight. Therefore, a refractory member having a simpler structure that can be applied to a larger through hole is desired.
  • the present invention has been made in view of such a problem, and an object of the present invention is to provide a fireproof member or the like which has a simple structure and can be applied to a large through hole.
  • the first invention includes a first foam which is a refractory member inserted into a through hole of a compartment and contains a heat-expanding material dispersedly, and the above-mentioned first.
  • the foam is rolled to form a tubular body, and a plurality of first tongue-shaped pieces are arranged in the circumferential direction at a plurality of portions in the axial direction of the tubular body. It is a fireproof member.
  • a plurality of notches are formed at both ends of the tubular body to form the first tongue-shaped piece, and the first tongue-shaped piece is bent toward the center at both ends of the tubular body. You may.
  • the first tongue-shaped piece may be fixed to the inner surface of the tubular body. That is, the formation position of the first tongue-shaped piece is not limited to both ends of the tubular body. Further, the formation position of the first tongue-shaped piece in the circumferential direction does not have to be on the same plane.
  • the position of the first tongue-shaped piece in the circumferential direction at a part of the axial end of the tubular body and the circumferential direction of the first tongue-shaped piece at another part in the axial direction of the tubular body is desirable that the formation positions are offset from each other.
  • the tubular body is formed by winding a second foam containing a heat-expanding material dispersed around the outer peripheral portion of the first foam, and is formed on one end of the second foam.
  • a plurality of notches may be formed to form a second tongue-shaped piece, and the second tongue-shaped piece may be bent outward on one end side of the tubular body to form a flange portion. ..
  • a second tongue-shaped piece that is bent outward may be formed between the first tongue-shaped pieces to form a flange portion.
  • the bent length of the first tongue-shaped piece may be longer than 1/2 of the inner diameter of the tubular body.
  • a third foam containing a heat-expanding material dispersed therein may be attached to the inside of the tubular body.
  • the thermal expansion material is dispersedly contained in the foam itself constituting the tubular body, the thermal expansion material can be arranged at a position close to the elongated body and brought into contact with the foam. Therefore, even when the size of the through hole is large, the through hole can be closed by the thermal expansion material in a short time. Further, since the first tongue-shaped pieces for blindfolding the inside and outside of the compartment are arranged at a plurality of places in the portion where the long body penetrates, the long body can be reliably supported and the blindfold can be performed.
  • the first tongue-shaped piece is formed integrally with the tubular body, so that the number of parts is small and the structure is simple.
  • the first tongue-shaped piece can be arranged at an arbitrary position of the tubular body.
  • the formation positions of the first tongue-shaped pieces in the circumferential direction of the parts having different axial directions of the tubular body are deviated from each other, the position of the gap between the first tongue-shaped pieces can be shifted.
  • the blindfold effect is greater.
  • the wall thickness of the tubular body can be increased and a larger expansion amount can be obtained. Also, the gap between the inner surface of the through hole and the elongated body can be reduced. At this time, a second tongue-shaped piece is formed at the end of the second foam, and the second tongue-shaped piece is bent outward to form a flange portion, whereby the tubular body is formed with respect to the through hole. Axial positioning can be performed.
  • the blindfold and the through hole are formed only by the first foam. It is possible to obtain the function of axially positioning the tubular body with respect to the above.
  • the inner surface of the through hole and the tubular shape are formed due to the deformation of the foam. Can be in close contact with the body.
  • the first tongue-shaped piece is made into a cylinder. It can be formed diagonally with respect to the radial direction of the body. Therefore, it is possible to make contact with the long body more reliably and to increase the effect of the blindfold.
  • the gap between the inner surface of the tubular body and the long body can be filled.
  • the second invention is a fireproof structure including a through hole provided in a compartment, a fireproof member provided in the through hole, and a long body inserted through the fireproof member.
  • the fireproof member includes a first foam in which a thermal expansion material is dispersed and contained, and a tubular body is formed by the first foam, and is centered on a plurality of portions of the tubular body in the axial direction. It is a fireproof structure characterized in that a plurality of first tongue-shaped pieces are formed in the circumferential direction toward the direction, and the elongated body comes into contact with the first tongue-shaped piece.
  • a gap may be formed between the inner surface of at least a part of the tubular body and the long body.
  • the second invention it is possible to obtain a fireproof structure that can be applied according to the size of the through hole with a simple structure.
  • the tubular body can be made slippery with respect to the long body. Therefore, the installation in the through hole becomes easy.
  • a third invention is a method for constructing a fireproof structure in which a fireproof member is provided in a through hole formed in a compartment, and the fireproof member is a first foam containing a heat expansion material dispersedly contained therein.
  • a body is provided, a tubular body is formed by the first foam, and a plurality of first tongue-shaped pieces are formed in the circumferential direction at a plurality of portions in the axial direction of the tubular body.
  • a slit is formed in a part of the circumferential direction of the tubular body along the axial direction of the tubular body, and a step of passing the long body through the through hole and opening the slit to open the fireproof member. It is a method of constructing a fireproof structure, which comprises a step of attaching to the outer periphery of the long body and inserting it into the through hole.
  • the third invention since it is only necessary to insert the mortar into the through hole without using mortar or the like, a fireproof structure can be easily obtained.
  • Front view of the fireproof member 1. It is sectional drawing which shows the fire-resistant member 1, and is the sectional view taken along the line CC of FIG. 2B. It is sectional drawing which shows the fire-resistant member 1, and is the sectional view taken along line AA of FIG. 2A.
  • the development view which shows the foam 13a before forming a tubular body 3. The figure which shows the process of constructing a fire protection structure 20.
  • FIG. 5 is a cross-sectional view showing a fireproof member 1a, and is a sectional view taken along line FF of FIG. 5A.
  • FIG. 12A is a sectional view taken along line HH.
  • FIG. 1A is a side view showing the fireproof member 1 according to the present invention
  • FIG. 1B is a front view
  • FIGS. 2A and 2B are sectional views of the fireproof member 1
  • FIG. 2A is a cross-sectional view of FIG. 2B.
  • a sectional view taken along line CC and FIG. 2B is a sectional view taken along line AA of FIG. 2A.
  • the fireproof member 1 is a member used by being inserted into a through hole formed in a partition portion for partitioning a space such as a wall, a floor, or a ceiling, and is mainly a first foam foam 13a and a metal tape. It is composed of 5 mag.
  • the foam 13a is a resin foam, and the material is not particularly limited.
  • a flame-retardant sponge of a polyolefin resin or a urethane resin can be applied as the base resin.
  • the polyolefin-based resin means an olefin homopolymer and / or an olefin copolymer.
  • the olefin homopolymer means a polymer of one kind of olefin.
  • the olefin copolymer constitutes an olefin component such as a copolymer of a certain olefin and a different olefin, and a copolymer of the olefin and a compound having a carbon-carbon double bond other than the olefin, for example, a vinyl compound. It is used in a broad sense, including those that have as an ingredient.
  • Specific examples of the polyolefin resin include low density polyethylene, linear low density polyethylene, high density polyethylene, ethylene- ⁇ olefin copolymer, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, and ethylene-.
  • Ethylene acrylate copolymers ethylene-vinyl acetate-vinyl chloride copolymers, ethylene-acrylic acid copolymers and the like can be used.
  • the resin composition of the present invention may contain one kind of polyolefin resin or two or more kinds. Of these, ethylene-vinyl acetate copolymer and / or low-density polyethylene are preferable.
  • a heat-expandable material 8 such as heat-expandable graphite is dispersed and contained inside the foam 13a.
  • the foam 13a is rolled to form a tubular body 3. That is, in a part of the tubular body 3 in the circumferential direction, a slit 11 is formed at the abutting portion between the end faces of the foam 13a along the axial direction of the tubular body 3, and the slit 11 forms the tubular body. 3 can be opened in a C shape.
  • a metal tape 5 is wrapped and attached to a part of the outer peripheral surface of the tubular body 3.
  • a thin metal plate may be used instead of the metal tape 5.
  • the metal tape 5 is made of, for example, aluminum or stainless steel.
  • the metal tape 5 also has a slit 11 formed at the same position as the tubular body 3 and can be opened together with the tubular body 3.
  • the metal tape 5 is arranged only on one end side of the fireproof member 1, and the metal tape 5 is not wound around the outer peripheral portion of the tubular body 3 in the other portion, and the metal tape 5 is continuously formed in the circumferential direction. It is desirable that there is a part where the body 3 is exposed.
  • the metal tape 5 is wrapped only at a portion of half the length of the tubular portion of the tubular body 3, and the foam 13a is exposed at the other half of the length of the tubular portion.
  • a plurality of notches 9a are formed at both ends of the tubular body 3, and a tongue-shaped piece 7a, which is the first tongue-shaped piece, is formed.
  • the tongue-shaped piece 7a is bent toward the center at both ends of the tubular body 3. That is, a plurality of tongue-shaped pieces 7a are formed in the circumferential direction at the plurality of portions of the tubular body 3 in the axial direction toward the center direction.
  • the opening of the tubular body 3 is substantially closed by the plurality of tongue-shaped pieces 7a.
  • FIG. 3 is a developed view of the foam 13a for forming the tubular body 3.
  • the dotted line X in the figure is a portion where the tongue-shaped piece 7a is bent.
  • the tongue-shaped piece 7a is formed in a substantially triangular shape so that the width becomes narrower toward the tip end, and is predetermined in the longitudinal direction of the foam 13a (corresponding to the circumferential direction of the tubular body 3). Formed on the pitch.
  • the length of the tongue-shaped piece 7a (D in FIG. 3, the length that can be bent) is 1/2 of the inner diameter of the tubular body 3 (B in FIG. 2A, hereinafter the "inner radius". It is desirable that it is longer than. If the length D of the tongue-shaped piece 7a is shorter than the inner radius B of the tubular body 3, both ends of the tubular body 3 cannot be completely closed. Therefore, the length D of the tongue-shaped piece 7a needs to be at least the same as the inner radius B of the tubular body 3.
  • the tongue-shaped piece 7a is shaped like a tongue.
  • the piece 7a can be formed slightly obliquely with respect to the direction perpendicular to the axial direction of the tubular body 3.
  • the formation position of the tongue-shaped piece 7a with respect to the longitudinal direction of the foam 13a is different between one end portion and the other end portion of the foam 13a. That is, the formation position of the tongue-shaped piece 7a at one end of the foam 13a (the formation position of the foam 13a with respect to the longitudinal direction) and the formation position of the tongue-shaped piece 7a at the other end of the foam 13a (foam).
  • the formation position of 13a in the longitudinal direction) is deviated from each other (E in the figure).
  • the formation positions of the tongue-shaped pieces 7a at both ends are deviated by half a pitch in the longitudinal direction of the foam 13a.
  • the forming position of the tongue-shaped piece 7a in the circumferential direction at one end of the tubular body 3 and the forming position of the tongue-shaped piece 7a in the circumferential direction at the other end of the tubular body 3 can be staggered from each other.
  • the foam 13a shown in FIG. 3 is rolled to form a substantially cylindrical shape by abutting both ends in the longitudinal direction, and further, each tongue-shaped piece 7a is bent toward the center of the cylinder to form the tubular body 3. Will be done.
  • the tubular body 3 can be formed by heating the tubular body 3 at a temperature lower than the thermal expansion start temperature of the thermal expansion material 8 (for example, 80 to 100 ° C.). The form of the shape 3 can be maintained.
  • FIG. 4A is a diagram showing a state before the fireproof member 1 is attached to the compartment 25.
  • a through hole 29 is formed in the compartment 25 which is the fire protection compartment.
  • the partition 25 is a wall or floor that partitions the internal space of a structure such as a building.
  • the long body 27 is inserted into the through hole 29 formed in the section 25.
  • the long body 27 is, for example, a cable or a pipe.
  • a plurality of long bodies may be inserted.
  • the through hole 29 has a shape corresponding to the outer shape of the tubular body 3 of the fireproof member 1, and in the illustrated example, the through hole 29 is substantially circular.
  • the fireproof member 1 is provided with a slit 11. Therefore, by opening the slit 11, the fireproof member 1 can be easily attached to the outer periphery of the long body 27 from the side of the long body 27.
  • the tongue-shaped piece 7a is deformed along the long body 27 and comes into close contact with the long body 27. Therefore, even if the thickness and the number of the long bodies 27 change due to the deformation of the tongue-shaped piece 7a, it is possible to cope with it.
  • the fireproof member 1 is moved along the elongated body 27 and inserted into the through hole 29.
  • the metal tape 5 is attached to one end side of the tubular body 3 in the circumferential direction. Therefore, the rigidity of the portion is increased by the metal tape 5, and the tubular body 3 is pushed into the through hole 29 with the end side around which the metal tape 5 is wound toward the tip side in the insertion direction. It is possible to suppress the collapse and deformation of the body 3.
  • the elongated body 27 comes into contact with the tongue-shaped piece 7a at a plurality of axially portion of the tubular body 3.
  • the tongue-shaped piece 7a on the tip side in the insertion direction may be folded back toward the inside of the tubular body 3 as shown in the drawing, and the foam 13a may be partially doubled. Therefore, the long body 27 can be reliably supported by the tongue-shaped piece 7a.
  • the inner diameter of the tubular body 3 is larger than the outer diameter of the elongated body 27 (in the case of a plurality of cases, the diameter of the inclusion circle).
  • a gap 17 is formed between at least a part of the inner surface of the tubular body 3 and the elongated body 27.
  • the fireproof structure 20 including the fireproof member 1 provided in the through hole 29 formed in the compartment and the long body 27 inserted through the fireproof member 1.
  • the refractory structure 20 can be easily obtained without using mortar or the like. Further, since most of the fireproof member 1 is made of foam 13a, it is lightweight. Further, since the tubular portion of the tubular body 3 and the tongue-shaped piece 7a are integrally formed of the foam 13a, the structure is simple and the number of parts is small. Further, by dispersing the heat-expanding material 8 inside the tubular body 3, it is possible to reduce the work of separately attaching the sheet-shaped or putty-shaped heat-expandable member to the foam, and the manufacturing is easy. Is. A heat-expandable putty may be used in combination with the inner circumference of the tubular body 3. By doing so, the thermal expansion performance can be further improved.
  • the inner diameter of the through hole 29 is substantially the same as or slightly smaller than the outer diameter of the tubular body 3. Further, since the tubular body 3 is a foam 13a, it is easily deformed. Therefore, the outer peripheral surface of the tubular body 3 can be brought into close contact with the inner surface of the through hole 29. In particular, a portion where the metal tape 5 is not wound and the tubular body 3 is continuously exposed in the circumferential direction is provided on the outer peripheral portion of the tubular body 3. In this portion, since the outer peripheral portion of the tubular body 3 has a cushioning property, it is possible to absorb the unevenness and diameter error of the inner peripheral surface of the through hole 29 and ensure that the through hole 29 is in close contact with the inner surface. it can.
  • the inner surface of the tubular body 3 does not come into close contact with the long body 27 on almost the entire surface to form a gap 17, so that when the fireproof member 1 is moved relative to the long body 27, friction occurs.
  • the resistance can be reduced.
  • the thermal expansion material 8 is dispersed in the foam 13a, the long body 27 is less slippery on the surface than a general urethane foam. Therefore, by reducing the contact area between the long body 27 and the tubular body 3, friction during relative movement can be reduced and movement can be easily performed.
  • the outer peripheral surface of the tubular body 3 is in contact with the inner surface of the through hole 29, and at least the portion of the tongue-shaped piece 7a of the tubular body 3 is in contact with the elongated body 27. Therefore, in the event of a fire or the like, heat is transferred from the long body 27 and immediately starts expansion. Therefore, even if the size of the through hole 29 is large, the through hole 29 can be reliably closed by the tubular body 3 between the elongated body 27 and the inner surface of the through hole 29.
  • the start time of expansion of the gap 17 portion is delayed as compared with the portion of the tongue-shaped piece 7a, at least the tongue-shaped piece 7a is formed by the heat from the side where the fire occurred and the heat from the elongated body 27. Immediately, expansion is started to close the through hole 29, and finally, the entire tubular body 3 expands, so that the through hole 29 can be reliably closed.
  • the tongue-shaped piece 7a functions as a blindfold between each side of the compartment 25.
  • a gap between the tongue-shaped pieces 7a is unlikely to occur when the tongue-shaped pieces 7a are deformed along the elongated body 27.
  • the tongue-shaped pieces 7a (notches 9a) at both ends of the tubular body 3 are displaced in the circumferential direction, so that the tongue-shaped pieces 7a are displaced from each other.
  • the gap is not formed in a straight line with respect to the axial direction of the through hole 29. Therefore, the blindfold between one side and the other side of the compartment 25 can be performed more reliably.
  • the fireproof member 1 can also be attached to a substantially rectangular through hole.
  • the foam 13a may be formed into an outer shape corresponding to the shape of the through hole.
  • the fireproof member 1 is attached after the long body 27 is inserted into the through hole 29, but the long body 27 is inserted after the fireproof member 1 is first arranged in the through hole 29. May be good.
  • the slit 11 is unnecessary.
  • the metal tape 5 may be wound after the slit 11 is opened and attached to the outer periphery of the long body 27. In this case, the metal tape 5 may be wrapped around the entire circumference and the slit 11 of the foam 13a may be closed.
  • the compartment 25 may be a hollow wall.
  • the metal tape 5 by adjusting the length and position of the metal tape 5, it can function as a sleeve that closes the hollow portion of the hollow wall. Therefore, it is possible to suppress the expansion of the thermal expansion material 8 into the hollow portion and regulate the expansion direction.
  • FIG. 5A is a side view of the fireproof member 1a according to the second embodiment
  • FIG. 5B is a front view
  • FIG. 6 is a sectional view taken along line FF of FIG. 5A.
  • the configurations that perform the same functions as the fireproof member 1 are designated by the same reference numerals as those in FIGS. 1A to 4B, and duplicate description will be omitted.
  • the fireproof member 1a is different from the fireproof member 1 in that the foam 13b is further arranged.
  • the tubular body 3a of the fireproof member 1a is formed by further winding the foam 13b, which is the second foam, around the outer peripheral portion of the tubular body 3 formed of the foam 13a.
  • the foam 13b contains the thermal expansion material 8 dispersedly.
  • the metal tape 5 is wound around the outer periphery of the outermost foam 13b. Further, slits 11 are formed at the same positions of the foams 13a and 13b and the metal tape 5.
  • the foam 13a and the foam 13b are joined with an adhesive, double-sided tape, or the like.
  • the foam 13a and the foam 13b may be joined by a stapler or sewing.
  • a plurality of notches 9b are formed at one end of the foam 13b to form a tongue-shaped piece 7b which is a second tongue-shaped piece.
  • Each of the plurality of tongue-shaped pieces 7b is bent outward at one end side of the tubular body 3a substantially perpendicular to the axial direction of the tubular body 3a to form a flange portion 15.
  • the foam 13b can be rolled and the tongue-shaped piece 7b bent and heated at a temperature equal to or lower than the expansion temperature of the thermal expansion material 8 to form the shape.
  • the length of the tubular portion of the foam 13a excluding the tongue-shaped piece 7a and the length of the tubular portion of the foam 13b excluding the tongue-shaped piece 7b are substantially the same.
  • the metal tape 5 is arranged on the end side opposite to the end side on which the tongue-shaped piece 7b is formed, and the metal is formed on the outer periphery of the tubular body 3a on the side where the tongue-shaped piece 7b is formed.
  • the foam 13b is exposed to the outer surface without the tape 5 being wound around.
  • FIG. 7A is a diagram showing a state before the fireproof member 1a is attached to the compartment 25.
  • a through hole 29 is formed in the division portion 25 which is a fire prevention division portion, and the long body 27 is inserted through the through hole 29.
  • the fireproof member 1a is attached to the long body 27.
  • the refractory member 1a is provided with slits 11 in each of the foams 13a, 13b and the metal tape 5, by opening them, the refractory member 1a can be seen from the side of the elongated body 27. It can be easily attached to the outer circumference of the long body 27.
  • the metal tape 5 may be wound around the entire circumference after the foams 13a and 13b are attached to the long body 27.
  • the fireproof member 1a is moved along the elongated body 27, and the tubular body 3b is inserted into the through hole 29.
  • the outer diameter of the flange portion 15 is sufficiently larger than the inner diameter of the through hole 29. Therefore, by inserting the fireproof member 1a into the through hole 29 until the flange portion 15 comes into contact with the surface of the partition portion 25, the insertion allowance of the fireproof member 1a into the through hole 29 can be made constant. From the above, the fireproof structure 20a can be formed.
  • FIG. 8A is a conceptual diagram showing a state in which a fire has occurred on the side of the compartment 25 where the flange portion 15 is arranged in the fire prevention structure 20a.
  • the foams 13a and 13b expand with respect to heating from the flange portion 15 side (arrow G in the figure).
  • the tongue-shaped pieces 7a and 7b (flange portion 15) of the fireproof structure 20a are composed of the foam 13b in which the thermal expansion material 8 is dispersed. Therefore, the flange portion 15 of the fireproof structure 20a also thermally expands.
  • the tongue-shaped piece 7a is a portion that comes into contact with the elongated body 27 and is exposed in a high-temperature room, so that it immediately starts expanding in the event of a fire. Further, since the flange portion 15 is also exposed in a high temperature room, expansion starts immediately.
  • FIG. 8B is a diagram showing a state in which expansion has further progressed.
  • a part of the tongue-shaped piece 7a of the foam 13a expands toward the room, while the other part expands toward the elongated body 27.
  • the long body 27 may have a smaller diameter due to burning of the outer cover or the like in the event of a fire, but even in such a case, the foam 13a expands in the direction of the long body 27, so that the through hole is surely formed. 29 can be closed.
  • the flange portion 15 expands mainly toward the indoor direction. Therefore, as the expansion of the flange portion 15 progresses, the effect as if the through hole 29 is lengthened can be obtained. Therefore, it is possible to prevent the heat on one side of the compartment 25 from being transferred to the opposite side of the compartment 25.
  • the same effect as that of the first embodiment can be obtained. Further, by superimposing the foam 13b on the foam 13a and forming the flange portion 15 by the foam 13b, the insertion allowance of the fireproof member 1a into the through hole 29 can be easily grasped, and the through hole 29 can be formed. On the other hand, the tubular body 3a can be positioned in the axial direction.
  • the flange portion 15 is composed of a separate member from the tongue-shaped piece 7a, the flange portion 15 is not affected and deformed when the tongue-shaped piece 7a is deformed. Further, since the flange portion 15 contains the thermal expansion material 8, it can be thermally expanded in the indoor direction in the event of a fire, and the effect of lengthening the through hole 29 can be obtained.
  • the flange portion 15 is made of foam, it can be easily crushed.
  • the compartment 25 is a floor
  • a part of the refractory member 1a protrudes from the upper surface of the compartment 25 by the thickness of the flange portion 15.
  • the flange portion 15 is easily crushed, it is possible to prevent the flange portion 15 from being bulged when, for example, a floor plate or the like is installed.
  • a metal tape or the like may be attached to the back surface side of the flange portion 15 (contact surface with the partition portion 25). By doing so, the rigidity of the flange portion 15 can be increased.
  • FIG. 9A is a diagram showing a fireproof structure 20b using the fireproof member 1b according to the third embodiment.
  • the fireproof member 1b has almost the same structure as the fireproof member 1a, except that the foam 13c, which is a third foam, is attached to the inside of the tubular body 3a.
  • the foam 13c contains the thermal expansion material 8 dispersedly, similarly to the foam 13a.
  • the foam 13c and the foam 13a are joined with an adhesive, double-sided tape, or the like. Further, in the foam 13c, slits 11 are formed at the same positions as the foams 13a and 13b and the metal tape 5.
  • the foam 13c is arranged in two layers, but the foam 13c may have only one layer or three or more layers. Further, in the fireproof structure 20b, the foam 13c is arranged over substantially the entire longitudinal direction of the tubular body 3a, and the innermost peripheral surface of the foam 13c comes into contact with the elongated body 27, but this is limited to this. I can't.
  • the foam 13c may be divided and arranged only on a part of the inner surface of the tubular body 3a.
  • the foam 13c is arranged near each end of the tubular body 3a, and the foam 13c is not arranged at the substantially central portion in the axial direction of the tubular body 3a, and a gap 17 is formed.
  • the same effect as that of the second embodiment can be obtained.
  • the foam 13c even if the gap 17 is too large and the expansion amount of the foam 13a or the like is insufficient, the through hole 29 can be reliably closed by the expansion of the foam 13c.
  • the foam 13c makes it possible to more reliably obtain a blindfold effect on the inside and outside of the compartment 25.
  • the foam 13c is arranged inside the tubular body 3a in the present embodiment, the foam 13c may be arranged inside the tubular body 3. Further, the foam 13c may be arranged on the outer periphery of the foam 13a, or may be arranged on the outer periphery of the foam 13b. Further, a heat-expandable putty may be used inside the tubular body 3a instead of the foam 13c or in addition to the foam 13c. Even in this way, the thermal expansion performance can be improved.
  • FIG. 10A is a side view showing the fireproof member 1d according to the fourth embodiment
  • FIG. 10B is a front view of the fireproof member 1d.
  • the fireproof member 1d has almost the same structure as the fireproof member 1a, except that the tubular body 3b is composed of only the foam 13a.
  • the foam 13a is rolled into a tubular shape, and a plurality of tongue-shaped pieces 7a are formed at each of both ends, and each of them is bent toward the center. Further, on one end side of the tubular body 3b, a tongue-shaped piece 7b that is bent outward is formed between the tongue-shaped pieces 7a. Similar to the fireproof member 1a, the tongue-shaped piece 7b is bent substantially perpendicular to the axial direction of the tubular body 3b to form the flange portion 15.
  • FIG. 11 is a developed view of the foam 13a for forming the tubular body 3b.
  • the dotted line X in the figure is a portion where the tongue-shaped piece 7a is bent
  • the dotted line Y in the figure is a portion where the tongue-shaped piece 7b is bent.
  • the bent direction of the dotted line X and the dotted line Y is opposite.
  • a notch 9c is formed on one end side (left side in the figure) of the foam 13a, and tongue-shaped pieces 7a and 7b are alternately formed.
  • the tongue-shaped pieces 7a and 7b do not necessarily have to alternate.
  • the tongue-shaped pieces 7a are formed in a substantially triangular shape so that the width becomes narrower toward the tip, and are formed at a predetermined pitch in the longitudinal direction of the foam 13a (corresponding to the circumferential direction of the tubular body 3b).
  • the tongue-shaped piece 7b has a substantially rectangular shape, and is formed at a predetermined pitch in the longitudinal direction of the foam 13a (corresponding to the circumferential direction of the tubular body 3b).
  • the width of the tongue-shaped piece 7b may be narrower than the width of the base of the tongue-shaped piece 7a.
  • the other end side (right side in the figure) of the foam 13a is the same as that shown in FIG.
  • the formation pitch of the tongue-shaped piece 7a with respect to the longitudinal direction of the foam 13a is the same at both ends of the foam 13a in the width direction. Further, as described above, the longitudinal formation position of the tongue-shaped piece 7a at one end of the foam 13a and the longitudinal formation position of the tongue-shaped piece 7a at the other end of the foam 13a are determined. It is desirable to form the tongue-shaped pieces 7a so as to be offset from each other. By doing so, the forming position of the tongue-shaped piece 7a in the circumferential direction at one end of the tubular body 3b and the forming position of the tongue-shaped piece 7a in the circumferential direction at the other end of the tubular body 3b. Can be staggered from each other.
  • the gap formed between the tongue-shaped pieces 7a can be closed by the tongue-shaped piece 7a at the other end of the tubular body 3b.
  • the blindfold effect can be enhanced.
  • the same effect as that of the second embodiment can be obtained. Further, since the flange portion 15 can be formed without overlapping the plurality of foams 13b, the structure can be further simplified.
  • FIG. 12A is a front view of the fireproof member 1e according to the fifth embodiment
  • FIG. 12B is a cross-sectional view taken along the line HH of FIG. 12A.
  • the fireproof member 1e has the same configuration as the fireproof member 1 and the like for the slit 11 and the metal tape 5, but the tongue-shaped piece 7a is not formed by bending both ends of the tubular body, but is a tubular body. It differs from 3c in that it is formed separately.
  • the tubular body 3c is formed by rolling the foam 13a.
  • a plurality of layers of the foam 13a are stacked.
  • a plurality of tongue-shaped pieces 7a are arranged in the circumferential direction at a plurality of portions of the tubular body 3c in the axial direction toward the center direction.
  • a hole 33 is formed in the tubular body 3c, and an insertion portion 31 formed on the rear end side of the tongue-shaped piece 7a is inserted and fixed to the tubular body 3c.
  • the tongue-shaped piece 7a shows an example of being arranged at three places in the axial direction of the tubular body 3c, it may be two places or four or more places. Further, the tongue-shaped piece 7a may be fixed by bonding the tubular body 3c to the inner surface or the like.
  • the insertion portion 31 of the tongue-shaped piece 7a arranged on one end side of the tubular body 3c is formed to have a length equal to or greater than the thickness of the tubular body 3c. Therefore, a part of the insertion portion 31 projects to the outside of the tubular body 3c.
  • the protruding insertion portion 31 can function as the flange portion 15.
  • the length of the insertion portion 31 of the tongue-shaped piece 7a at another portion is set to be equal to or less than the thickness of the tubular body 3c. Therefore, the insertion portion 31 does not protrude from the tubular body 3c.
  • the flange portion 15 may not be provided.
  • each tongue-shaped piece 7a from the inner surface of the tubular body 3c is 1/2 or more of the inner diameter of the tubular body 3c.
  • the length of the tongue-shaped piece 7a is longer than 1/2 of the inner diameter of the tubular body 3c.
  • the position of forming a part of the tongue-shaped piece 7a in the axial direction of the tubular body 3c in the circumferential direction and the position of forming the tongue-shaped piece 7a in the other part in the axial direction of the tubular body 3c are mutually exclusive. It is desirable that they are out of alignment.
  • each tongue-shaped piece 7a can be formed at a portion other than the end portion of the tubular body 3c.
  • the foam 13c may be further overlapped with the tubular body 3b.
  • a hole 33 is formed in a portion other than the end, and the tongue-shaped piece 7a is further arranged. May be good.
  • the tubular body is formed by rolling the foam, but it is not always necessary to form the tubular body by rolling it.
  • a tubular body may be formed by extrusion molding or the like. In this case, if necessary, a slit may be formed in the axial direction of the tubular body to open the slit. That is, as long as the tubular body is formed by the foam, the manufacturing method is not limited.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
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  • Health & Medical Sciences (AREA)
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  • Business, Economics & Management (AREA)
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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Building Environments (AREA)
  • Installation Of Indoor Wiring (AREA)
PCT/JP2020/019751 2019-05-23 2020-05-19 耐火部材、防火構造体および防火構造体の施工方法 Ceased WO2020235549A1 (ja)

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JP2020560426A JP7479298B2 (ja) 2019-05-23 2020-05-19 耐火部材、防火構造体および防火構造体の施工方法
EP20809057.1A EP3974033A4 (en) 2019-05-23 2020-05-19 FIRE RESISTANT ELEMENT, FIRE PREVENTION STRUCTURE, AND FIRE PREVENTION STRUCTURE INSTALLATION METHOD

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JP2019-097138 2019-05-23
JP2019097138 2019-05-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023093459A (ja) * 2019-07-04 2023-07-04 未来工業株式会社 隙間処理部材及び区画体の貫通孔処理構造
WO2025203857A1 (ja) * 2024-03-28 2025-10-02 三菱重工業株式会社 シール構造、建屋及びシール構造の製造方法

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GB2233725A (en) * 1989-07-07 1991-01-16 Arthur Peter Hamilton Fire stop collar for pipe lead-through
JPH042925U (https=) * 1990-04-24 1992-01-10
JPH0530681U (ja) * 1991-09-30 1993-04-23 古河電気工業株式会社 防火区画体における可燃材製長尺管体貫通部の防火構造
JPH09262305A (ja) 1996-03-28 1997-10-07 Furukawa Techno Material:Kk 防火区画体貫通部の防火処理用シート及び防火処理構造
JP2009197479A (ja) * 2008-02-21 2009-09-03 Mirai Ind Co Ltd スリーブ形成シート及び貫通部構造の形成方法
JP2014007893A (ja) * 2012-06-26 2014-01-16 Mirai Ind Co Ltd 中空壁における貫通孔の耐火構造及び充填材受け具
JP2016112345A (ja) 2014-12-18 2016-06-23 株式会社古河テクノマテリアル 耐火部材、防火構造体、構造物および防火構造体の施工方法
JP2016223190A (ja) * 2015-06-01 2016-12-28 積水化学工業株式会社 貫通孔カバー、及び区画貫通孔の防火構造

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JP6150933B2 (ja) * 2015-10-02 2017-06-21 因幡電機産業株式会社 貫通孔措置ユニット及び貫通孔措置構造

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Publication number Priority date Publication date Assignee Title
GB2233725A (en) * 1989-07-07 1991-01-16 Arthur Peter Hamilton Fire stop collar for pipe lead-through
JPH042925U (https=) * 1990-04-24 1992-01-10
JPH0530681U (ja) * 1991-09-30 1993-04-23 古河電気工業株式会社 防火区画体における可燃材製長尺管体貫通部の防火構造
JPH09262305A (ja) 1996-03-28 1997-10-07 Furukawa Techno Material:Kk 防火区画体貫通部の防火処理用シート及び防火処理構造
JP2009197479A (ja) * 2008-02-21 2009-09-03 Mirai Ind Co Ltd スリーブ形成シート及び貫通部構造の形成方法
JP2014007893A (ja) * 2012-06-26 2014-01-16 Mirai Ind Co Ltd 中空壁における貫通孔の耐火構造及び充填材受け具
JP2016112345A (ja) 2014-12-18 2016-06-23 株式会社古河テクノマテリアル 耐火部材、防火構造体、構造物および防火構造体の施工方法
JP2016223190A (ja) * 2015-06-01 2016-12-28 積水化学工業株式会社 貫通孔カバー、及び区画貫通孔の防火構造

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See also references of EP3974033A4

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023093459A (ja) * 2019-07-04 2023-07-04 未来工業株式会社 隙間処理部材及び区画体の貫通孔処理構造
JP7495547B2 (ja) 2019-07-04 2024-06-04 未来工業株式会社 隙間処理部材及び区画体の貫通孔処理構造
WO2025203857A1 (ja) * 2024-03-28 2025-10-02 三菱重工業株式会社 シール構造、建屋及びシール構造の製造方法

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