JP2011219347A - Mounting structure of fireproof plate glass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure 10 of fireproof plate glass which has a large light transmission area and has no gap for making flame pass between a frame body 12 and a fireproof glass 11 at a fire.SOLUTION: The mounting structure 10 of the fireproof plate glass which holds a circumferential part of the fireproof plate glass 11 using heat-resistant plate glass by the frame body 12 comprising an upper frame 13, a lower frame 15 and right and left jambs comprises an outer frame member 131 in which the upper frame 13 of the frame body 12 is fixed to an opening of a building frame 18 and an inner frame member 132 which is fitted relatively movably to the outer frame member 131 and which holds an upper rim 11a of the fireproof plate glass 11.

Description

  The present invention relates to a mounting structure for a fire prevention glass plate that is formed by holding a peripheral edge portion of a fire prevention glass plate using a heat-resistant plate glass with a frame.

  As large buildings such as office buildings and department stores increase, specific fire prevention equipment having a function of a fire door that blocks fire and smoke and prevents fire spread in the event of a fire has been used. Specified fire prevention equipment is stipulated in Article 112, Paragraph 1 of the Building Standards Law Enforcement Ordinance, and when a flame due to a normal fire is applied, the flame is emitted to surfaces other than the heated surface for 1 hour after the start of heating. It has no performance. In order to obtain the certification of the Ministry of Land, Infrastructure, Transport and Tourism as a specific fire prevention equipment, it is necessary to pass a test by an evaluation testing organization designated by the Ministry of Land, Infrastructure, Transport and Tourism.

  In recent years, the use amount of specific fire prevention equipment that has secured visibility using a heat-resistant plate glass having translucency for the fire prevention plate glass has been increasing. At present, heat-resistant plate glass is classified into three types: heat-resistant tempered glass, low expansion heat-resistant plate glass, and heat-resistant crystallized glass. The heat-resistant tempered glass is obtained by cutting a soda-lime glass, which is usually used as a plate glass for construction, into a desired size, specially polishing the edge, and then applying a special heat-strengthening treatment to increase the heat-resistant strength. . In addition, low-expansion heat-resistant flat glass is made of soda-lime glass, which is usually used as architectural glass, cuts the original size of glass using mainly boric acid by reducing lime, and then heat-treating it for fire protection. It is a glass that can be used. The heat-resistant crystallized glass is made of glass containing a lithium alumina silicate-based composition, and heat treatment of the plate glass causes fine crystals to precipitate on the entire glass, thereby increasing the thermal shock strength by bringing the coefficient of thermal expansion close to zero. It can be easily cut like a general building glass sheet.

  As a glass that can be used for the fire-proof plate glass of such fire-proof equipment, for example, Patent Documents 1 and 2 include a fluororesin film made of only a chain-like molecular structure on one side or both sides of a plurality of fire-proof glass plates. A fireproof safety glass is disclosed which is bonded. Patent Document 3 discloses a method for producing fire safety glass described in Patent Document 2. Further, Patent Documents 4 and 5 disclose a technique for bonding laminated glass.

JP-A-4-224938 JP-A-8-132560 Japanese Patent Laid-Open No. 9-2847 JP-A-2005-320214 JP 2006-250345 A

  In order to satisfy the performance required for the specific fire prevention equipment using heat-resistant plate glass for this fire-proof plate glass, the plate glass has sufficient heat resistance, does not break against thermal shock, and a frame body and plate glass that holds the four sides of the plate glass There should be no gap between them.

  However, in the past, when using a heat-resistant plate glass with a small coefficient of thermal expansion to improve the heat resistance, and fixing the four rounds of this fire-resistant plate glass to the frame body with the usual swallowing dimensions, in the event of a fire, the frame and fire-resistant plate glass In the meantime, there was a problem that a gap that caused a problem in flame shielding performance was generated.

  The present invention was made in view of the above-mentioned problems in the conventional fireproof glass plate mounting structure, and does not create a gap through which a flame passes between the frame and the heat-resistant glass sheet in the event of a fire. It is an object of the present invention to provide a plate glass mounting structure.

The present invention is a fireproof plate glass mounting structure in which a peripheral portion of a fireproof plate glass using a heat-resistant plate glass is held by a frame composed of an upper frame, a lower frame, and left and right vertical frames,
An upper frame of the frame body is fitted to an outer frame member fixed to an opening of a building frame, and is fitted to the outer frame member so as to be relatively movable in a direction parallel to the light-transmitting surface of the fire protection plate glass. And an inner frame member for holding the upper edge portion.

  The present invention further includes a connecting member that integrally connects the outer frame member and the inner frame member, and melts at the time of a fire to separate the outer frame member and the inner frame member so as to be relatively movable. It is characterized by that.

  Further, the present invention is characterized in that the connecting member is made of a low melting point alloy.

  Further, the present invention is characterized in that a fitting groove opened downward is formed in a lower portion of the outer frame member, and the inner frame member is fitted in the fitting groove so as to be relatively movable. To do.

  Further, the present invention is characterized in that a fitting groove opened upward is formed in an upper part of the inner frame member, and the outer frame member is fitted in the fitting groove so as to be relatively movable. To do.

Further, the present invention, the difference in average linear expansion coefficient at 30 to 380 ° C. and the heat resistant glass plate constituting the fire plate glass and the frame member is in the range of ^{100 × 10 -7 / K~240 × 10} -7 / K It is characterized by being within.

  Further, the present invention is characterized in that the flame-shielding effective portion of the frame is formed of a steel material having a thickness of 1.6 mm or more.

Further, the present invention is the heat resistant glass plate constituting the fire plate glass, characterized in that it has an average linear expansion coefficient of ^{-20 × 10 -7 / K~20 × 10} -7 / K in the temperature range of 30 to 380 ° C. And

Moreover, this invention is the laminated glass which the said fire prevention glass plate joins a several sheet glass through a resin layer between each translucent plane, and at least 1 sheet glass is 30 degreeC-380. It is a heat-resistant plate glass having an average linear expansion coefficient of −20 × 10 ⁻⁷ / K to 20 × 10 ⁻⁷ / K in a temperature range of ° C.

  Moreover, this invention is characterized by the thickness of the said fire prevention glass plate being 1 mm-12 mm.

  Further, according to the present invention, the fireproof plate glass is inserted into the glass holding groove of the frame body only by 4.5 mm or more, and a gap between the glass holding groove and the fireproof plate glass is sealed with a sealing material made of a heat resistant material. It is characterized by being stopped.

  According to the fireproof plate glass mounting structure according to the present invention, the upper frame of the frame body that holds the fireproof plate glass is composed of a relatively movable outer frame member and an inner frame member. There is no gap that allows a flame to pass through between the frame and the flame shielding function.

  Moreover, according to the fireproof plate glass mounting structure according to the present invention, it is possible to reduce the penetration size of the fireproof plate glass, and to reduce the found size of the frame body and to increase the light transmission area.

BRIEF DESCRIPTION OF THE DRAWINGS It is a partially abbreviated longitudinal cross-sectional view of the mounting structure of the fire protection plate glass of the first embodiment according to the present invention, (A) represents a normal state before heating, (B) represents a state during heating, (C ) Represents the state after heating. It is a partially-omission longitudinal cross-sectional view of the attachment structure of the fire prevention glass plate of 2nd embodiment which concerns on this invention, (A) represents the normal state before a heating, (B) represents the state after a heating. It is a partially-omission longitudinal cross-sectional view of the modification of the fire-protection glass of the attachment structure of the fire-protection glass concerning this invention.

"First embodiment"
As shown in FIG. 1, the fireproof plate glass mounting structure 10 according to the first embodiment of the present invention is formed by holding the peripheral portion of the fireproof plate glass 11 with a frame 12. The frame body 12 is composed of an upper frame 13, a lower frame 15, and left and right vertical frames (not shown), and holds and fixes four rounds of a vertically long rectangular fireproof glass sheet 11.

  The upper frame 13 of the frame 12 is relatively fixed to the outer frame member 131 fixed to the opening of the building housing 18 by welding, bolting, or the like, and in parallel to the light-transmitting surface of the fireproof glass sheet 11. The inner frame member 132, which is movably fitted and holds the upper edge portion 11a of the fireproof glass plate 11 by adhesion or the like, and the outer frame member 131 and the inner frame member 132 are integrally connected to each other, so that they melt in the event of a fire. Thus, the outer frame member 131 and the inner frame member 132 are separated from each other so as to be relatively movable.

  The outer frame member 131 is formed with a fitting groove 131a opened downward at the lower portion thereof, and the inner frame member 132 is fitted into the fitting groove 131a so as to be relatively movable. The clearance between the end edge of the fitting groove 131a and the outer surface 132a of the inner frame member 132 is less than 1 mm.

  The inner frame member 132 is formed with a pair of outward flanges 132b on the upper portion thereof, and when the outer frame member 131 and the inner frame member 132 are moved relative to each other, the flange 132b is inserted into the edge of the fitting groove 131a. The inner frame member 132 is prevented from coming out of the fitting groove 131a and coming off. In addition, a glass holding groove 132c capable of holding the upper edge portion 11a of the fire prevention glass plate 11 is formed in the lower portion of the inner frame member 132.

  The connecting member 133 is made of a low melting point alloy, and the outer frame member 131 and the inner frame member 132 are integrated by brazing, brazing, soldering, or the like. As a low-melting-point alloy, it does not melt at daily temperatures, and when a flame due to a fire is applied, it is surely melted at 230 ° C. or less before the fireproof glass plate 11 and the inner frame member 132 are pulled apart to form a gap. An alkali metal alloy, solder, lead-free solder, wood metal, rose alloy, Galinstan (registered trademark), or the like can be used. Lead-free solder is preferred in terms of reducing environmental burden. The connecting member 133 may be formed of, for example, a synthetic resin material such as an organic adhesive, but it is preferable to use an alloy or the like in consideration of ignition during fire or generation of smoke.

  The pair of left and right vertical frames and the lower frame 15 of the frame body 12 are framed with the outer frame member 131 of the upper frame 13. Glass holding grooves 15 a that respectively hold the left and right side edge portions and the lower edge portion 11 b of the fire protection plate glass 11 are formed on the opposing side portions of the left and right vertical frames and the upper portion of the lower frame 15. In a state where the lower edge portion 11b of the fire protection plate glass 11 is placed on the spacer 15b disposed in the lower frame 15, the peripheral portion of the fire protection plate glass 11 is set to each glass holding groove (15a, 132c) of the frame body 12. ) Is contained with a penetration size of 5 mm. A ceramic fiber blanket material 16 made of a heat-resistant material is packed between the fire-proof plate glass 11 and each glass holding groove (15a, 132c), and a sealing material 17 made of fire-proof silicone is filled and sealed. ing.

  As described above, in the fireproof plate glass mounting structure 10 of the present embodiment, the upper frame 13 of the frame 12 that holds the fireproof plate glass 11 is composed of the outer frame member 131 and the inner frame member 132 that are relatively movable. Therefore, it is possible to reliably shield the flame without causing a gap for passing a flame between the fire prevention glass plate 11 and the frame body 12 in the event of a fire.

  That is, as shown in FIG. 1B, even if the building frame 18 and the outer frame member 131 fixed to the building frame 18 are thermally expanded as compared with the fireproof glass plate 11 due to heating during a fire, Since the connecting member 133 is melted by the heat at the time, and the outer frame member 131 and the inner frame member 132 are separated and can be relatively moved, as shown in FIG. The thermal expansion of the member 131 is not followed and the holding of the fireproof glass 11 can be maintained. Therefore, it is possible to prevent the occurrence of a gap through which a flame passes in the upper edge portion 11a of the fireproof glass plate 11 where the displacement based on the difference in thermal expansion coefficient appears most.

  In addition, in the fireproof plate glass mounting structure 10 of the present embodiment, the inner frame member 132 is formed with the flange 132b that can be engaged with the edge of the fitting groove 131a of the outer frame member 131. Sometimes, the inner frame member 132 can be reliably prevented from fire without fear of falling out of the fitting groove 131a.

  Moreover, since the frame 12 is comprised from the outer frame member 131 and the inner frame member 132 which can be relatively moved, the attachment structure 10 of the fire-protection glass of this embodiment makes the shrinkage | contraction dimension of the fire-protection glass 11 small. It is possible to reduce the size of the frame body 12 and increase the light-transmitting area.

  Moreover, since the outer frame member 131 and the inner frame member 132 are integrated by the connection member 133, the mounting structure 10 of the fireproof glass plate of this embodiment greatly improves the mounting workability of the mounting structure 10 of the fireproof glass plate. Can be improved.

  In the present embodiment, the upper frame 13 of the frame body 12 is configured as a double structure including an outer frame member 131 and an inner frame member 132 that are relatively movable. The left and right vertical frames may be configured as a double structure including an outer frame member and an inner frame member that can be moved relative to each other. Further, even if the inner frame member 132 can reliably hold and fix the upper edge portion 11b of the fireproof glass plate 11 by the sealing material 17 or the like even when heated in a fire, the inner frame member 132 is not necessarily provided with the flange portion 132b. May be.

Further, in the present embodiment, the difference in average linear expansion coefficient at 30 to 380 ° C. and the heat resistant glass plate and the frame 12 of the fire protection glazing 11, of ^{100 × 10 -7 / K~240 × 10} -7 / K It is preferable to be within the range.

Difference in average linear expansion coefficient between the heat resistant glass plate and the frame 12 of the fire protection glazing 11 is less than ^{100 × 10 -7 / K, -20} × 10 -7 / K~20 × 10 -7 / K When the heat-resistant plate glass having the average linear expansion coefficient is used, the frame body 12 made of steel, aluminum, resin or the like whose average linear expansion coefficient exceeds 100 × 10 ⁻⁷ / K is out of the range. Further, when the difference in average linear expansion coefficient between the heat-resistant plate glass constituting the fire-proof plate glass 11 and the frame body 12 exceeds 240 × 10 ⁻⁷ / K, when a flame due to a normal fire is applied, the fire-proof plate glass 11 and the frame Since a gap is easily generated between the body 12 and the body 12, it is not preferable in terms of flame shielding performance.

  Moreover, in this embodiment, it is preferable that the flame-shielding effective site | part of the frame 12 is formed with the steel material which has a thickness of 1.6 mm or more.

  When the thickness of the effective flame-shielding portion of the frame 12 is less than 1.6 mm, when a flame due to a normal fire is applied, a deformation due to insufficient heat resistance is generated and a gap that causes a problem in flame-shielding performance is generated. . That is, if a steel material or the like having a thickness of less than 1.6 mm is used for the flame-shielding effective portion of the frame body 12, the deformation of the frame body 12 becomes large at the time of a fire. Even if the heat-resistant plate glass or laminated glass employing such a heat-resistant plate glass is safe, there is a high probability that a flame will be generated on the non-heated side. As the frame body 12 having a thickness of 1.6 mm or more as the effective portion of the flame shield used in the present invention, any frame can be used as long as it satisfies the standards for the flame shield performance of the specific fire prevention equipment. A material obtained by bending a steel plate having a thickness of 1.6 mm or more is preferable, and it is more preferable that the deformation at the time of fire is small. It should be noted that the effective flame shielding portion of the frame has a thickness of 1.6 mm or more excludes screw holes, cutouts, and the like of attachment portions that are not directly related to flame shielding.

Further, in the present embodiment, the heat resistant glass plate constituting the fire plate glass 11, to have an average linear expansion coefficient of ^{-20 × 10 -7 / K~20 × 10} -7 / K in the temperature range of 30 to 380 ° C. preferable.

A fire plate glass 11, the average linear expansion coefficient using a heat resistant glass plate is in the range of ^{-20 × 10 -7 / K~20 × 10} -7 / K, the generation of thermal stress due to a sudden temperature difference during a fire Since there are few, it does not produce a damage | damage with respect to fire extinguishing work at the time of fires, such as water discharge, and since the safety of a fire extinguishing worker is ensured, it is preferable.

Moreover, in this embodiment, the fire prevention glass plate 11 is a laminated glass formed by joining a plurality of plate glasses through a resin layer between the respective light transmission planes, and at least one plate glass is 30 ° C. to 380 ° C. It is preferable that it is a heat-resistant plate glass having an average linear expansion coefficient of −20 × 10 ⁻⁷ / K to 20 × 10 ⁻⁷ / K in the temperature range of ° C.

  In this way, safety can be ensured without the glass pieces scattering even in the event of damage due to impact. Moreover, since it is difficult to break down, it is possible to provide a product with excellent crime prevention. For example, it is preferable that the performance meets the standard of JIS R 3205 “Laminated glass”.

  In the laminated glass according to the present invention, the resin layer is made of polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), polyethylene terephthalate (PET), polycarbonate (PC), acrylic, and ultraviolet curable resin. Or a fluororesin having a chain-like molecular structure, and the thickness of the resin layer is preferably 0.2 mm or more and 2 mm or less in view of performance and cost.

  Moreover, in the laminated glass, even if the resin used for the resin layer is more combustible than fluororesins such as PVB, EVA, PET, PC, acrylic, and ultraviolet curable resin, at least below the laminated glass If the mating surface opening of the heat-resistant plate glass from the end face to the lower part of the side surface including the corners on both sides is sealed with a heat-resistant sealing material, the flame can penetrate to the non-heating side The sex becomes smaller.

  Furthermore, in the laminated glass, the resin used for the resin layer is made of a fluororesin having a chain molecular structure. For example, a copolymer such as a monomer of tetrafluoroethylene, hexafluoropropylene and vinylidene fluoride is used. As a monomer that is formed from a coalescence and constitutes a resin film, for example, tetrafluoroethylene (TFE), hexafluoropropylene (HFP), vinylidene fluoride (VDF), polychlorotrifluoroethylene (PCTFE), Vinyl fluoride (VF), perfluoroalkyl vinyl ether (PFA), and the like can be used. In particular, a fluororesin composed of a copolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride has a low melting point. It is preferred. Such a fluororesin consisting only of a chain-like molecular structure is flame-retardant due to a strong interatomic bond between carbon and fluorine and a barrier effect by the fluorine atoms surrounding the carbon skeleton, and does not burn in the air. It has the characteristic. In addition, this fluororesin has a high degree of polymerization and a complex entangled structure compared to other fluororesins having a molecular structure. Therefore, it has a high elongation and tensile strength. A material excellent in penetration resistance and scattering prevention properties can be obtained. Moreover, it is preferable that the fluororesin having a chain molecular structure is a fluororesin having only a chain molecular structure in order to exhibit high flame retardancy and strength as a fireproof safety glass for a specific fireproof facility.

  In the laminated glass, if the thickness of the resin layer is 0.2 mm or more and 2 mm or less, it is difficult to obtain desired impact resistance if the thickness of the resin layer is less than 0.2 mm. On the other hand, if the thickness of the resin layer exceeds 2 mm, it is difficult to ensure high transparency as a window, and more smoke is likely to be generated when the resin melts in a fire, which is not preferable for fire prevention. Furthermore, if the thickness of the resin layer exceeds 2 mm, both the economic efficiency when manufacturing the specific fire prevention equipment and the workability during assembly are impaired.

  Moreover, in this embodiment, it is preferable that the thickness of the fire prevention glass plate 11 is 1 mm-12 mm.

  When the fireproof glass plate 11 is a single plate of heat-resistant plate glass, it is preferable that the thickness is practically 4 mm to 12 mm. In the case of using a laminated glass, the thickness of 1 mm to 10 mm is combined to the actual state of the place of use. It is economically preferable to match.

  Moreover, in this embodiment, only the fireproof plate glass 11 is put into the glass holding groove of the frame 12 by 4.5 mm or more, and the sealing material 7 which consists of a heat resistant material is between the glass holding groove and the fireproof plate glass 11. It is preferable to be sealed by.

  If the intrusion dimension with respect to the glass holding groove at the peripheral edge portion of the fire prevention plate glass 11 is less than 4.5 mm, the frame body 12 that is being constructed expands despite the temperature of the fire prevention plate glass 11 not being deformed by temperature, and therefore the frame body 12. And a heat-resistant crystallized glass, a gap that causes a problem in flame barrier performance is generated. Therefore, the probability that a flame will be generated from this portion increases, and it becomes difficult to ensure safety. On the other hand, when the concavity dimension exceeds 15 mm, the finding dimension of the frame is increased, so that the area of the translucent portion is reduced and the function as an opening for taking in light is reduced. The included size is preferably 4.5 mm or more and less than 15 mm. Further, as the sealing material 7 made of a heat resistant material, ceramic fiber, fire-resistant putty or the like can be used, and ceramic fiber is preferable in terms of workability.

"Second embodiment"
As shown in FIG. 2, the fireproof plate glass mounting structure 20 according to the second embodiment of the present invention is formed by holding the peripheral portion of the fireproof plate glass 21 with a frame body 22. The frame body 22 is composed of an upper frame 23, a lower frame 25, and left and right vertical frames (not shown), and holds and fixes four rounds of a vertically long rectangular fireproof glass plate 21, respectively.

  The upper frame 23 of the frame body 22 is fixed to the opening of the building housing 28 by welding, bolting, or the like, and relative to the outer frame member 231 in a direction parallel to the light-transmitting surface of the fire prevention glass plate 21. The inner frame member 232 that is movably fitted and holds the upper edge portion 21a of the fire prevention glass plate 21 by adhesion or the like is integrally connected to the outer frame member 231 and the inner frame member 232, and melts itself in the event of a fire. Thus, the outer frame member 231 and the inner frame member 232 are separated from each other so as to be relatively movable.

  The inner frame member 232 has a fitting groove 232a opened upward at the upper portion thereof, and the outer frame member 231 is fitted into the fitting groove 232a so as to be relatively movable. The clearance between the end edge of the fitting groove 232a and the outer surface 231a of the outer frame member 231 is less than 1 mm. In addition, a glass holding groove 232 b that can hold the upper edge portion 21 a of the fire prevention plate glass 21 is formed in the lower portion of the inner frame member 232.

  The outer frame member 231 is formed with a pair of outward flange portions 231b at the lower portion thereof, and when the outer frame member 231 and the inner frame member 232 are moved relative to each other, the flange portion 231b is fitted to the edge of the fitting groove 232a. The outer frame member 231 is prevented from coming out of the fitting groove 232a and coming off.

  The connecting member 233 is made of a low melting point alloy, and the outer frame member 231 and the inner frame member 232 are integrated by brazing, brazing, soldering, or the like. As in the first embodiment, it is preferable to form the connecting member 233 with lead-free solder in terms of reducing environmental burden.

  The pair of left and right vertical frames and the lower frame 25 of the frame body 22 are framed with the outer frame member 231 of the upper frame 23. Glass holding grooves 25 a for holding the left and right side edge portions and the lower edge portion 21 b of the fire protection plate glass 21 are formed on the opposite sides of the left and right vertical frames and the upper portion of the lower frame 25. In a state where the lower edge portion 21b of the fire prevention plate glass 21 is placed on the spacer 25b disposed in the lower frame 25, the peripheral portion of the fire prevention plate glass 21 is set to each glass holding groove (25a, 232b) of the frame body 22. ) Is contained with a penetration size of 5 mm. Then, a ceramic fiber blanket material 26 made of a heat-resistant material is packed between the fireproof plate glass 21 and each glass holding groove (25a, 232b), and a sealing material 27 made of fireproof silicone is filled and sealed. ing.

  Thus, even in the fireproof glass plate mounting structure 20 of the second embodiment, the upper frame 23 of the frame body 22 that holds the fireproof glass plate 21 is composed of an outer frame member 231 and an inner frame member 232 that are relatively movable. Since it is comprised, it can shield reliably, without producing the clearance gap which lets a flame pass between the fire prevention glass plate 21 and the frame 22 at the time of a fire.

  In other words, even if the building frame 28 and the outer frame member 231 fixed to the building frame 28 expand greatly due to heating in the event of a fire, the connecting member 233 melts due to the heat at that time. Since the outer frame member 231 and the inner frame member 232 are separated and can be relatively moved, the inner frame member 232 does not follow the thermal expansion of the outer frame member 231 as shown in FIG. The holding of the fireproof glass plate 21 can be maintained. Accordingly, it is possible to prevent the occurrence of a gap through which a flame passes in the upper edge portion 21a of the fireproof glass plate 21 where the displacement based on the difference in thermal expansion coefficient appears most.

  Moreover, since the collar part 231b which can be engaged with the edge part of the fitting groove | channel 232a of the inner frame member 232 is formed in the outer frame member 231, the outer frame member 231 and the inner frame member 232 come off at the time of a fire. The fire can be reliably prevented without fear.

  Hereinafter, the Example of the attachment structure body of the fire prevention plate glass which concerns on this invention is described.

"Example 1"
In order to produce the fireproof plate glass mounting structure 10 of the first embodiment, first, as the fireproof plate glass 11, a heat-resistant crystallized glass plate having a thickness of W = 1000 × H = 2400 mm and a thickness of 4 mm was prepared. This heat-resistant crystallized glass plate has an approximate composition of mass%, SiO ₂ 68%, Al ₂ O ₃ 23%, LiO ₂ 4%, TiO ₂ 2%, ZrO ₂ 3%, and the molten glass is rolled out. It is made by the method, crystallized at a maximum temperature of 950 ° C., and then polished on both sides (trade name: Firelight, manufactured by Nippon Electric Glass Co., Ltd.). The average linear expansion coefficient in the temperature range of 30 to 380 ° C. of this fire protection plate glass is −2 × 10 ⁻⁷ / K.

Next, the frame body 12 that supports the peripheral edges of the four sides of the fire-proof plate glass 11 made of heat-resistant plate glass was produced by bending a steel material having a thickness of 1.8 mm. The average linear expansion coefficient in the temperature range of 30 to 380 ° C. of this steel material is 183 × 10 ⁻⁷ / K, and the difference in average linear expansion coefficient between the frame body 12 and the fire protection plate glass 11 is 185 × 10 ⁻⁷ / K. is there. The frame 12 was fixed by welding to a steel material for a heating test assuming the building frame 18.

A heating test was conducted on the specific fire prevention equipment according to the provisions of Article 112, Paragraph 1 of the Building Standards Law Enforcement Ordinance on the fireproof plate glass mounting structure 10. As for the heating conditions of the heating test, the heating temperature T follows the following formula.
T = 345log ₁₀ (8t + 1) +20
T: Average furnace temperature (° C)
t: Test elapsed time (minutes)
In this heating test, the heating time t was 60 minutes.

  First, as shown in FIG. 1 (B), the frame of the test is such that the frame 12 gradually expands following the building housing 18 and the upper and left and right fillers 17 are exposed. As time passed, the outer surface 132a of the inner frame member 132 began to protrude slightly from the fitting grooves 131a of the outer frame members 131 of the upper and left and right frame bodies 12. Even after 60 minutes from the start of heating, the fireproof glass plate 11 was not damaged, and there was no gap between the fireproof glass plate 11 and the frame body 12 causing a problem in flameproof performance. After the test, as shown in FIG. 1C, the connecting member 133 made of a low-melting-point alloy, in which the outer frame member 131 and the inner frame member 132 are integrated, melts and the outer frame member 131, the inner frame member 132, The outer frame 132a of the inner frame member 132 protrudes from the fitting groove 131a of the outer frame member 131, and the flange 132b of the inner frame member 132 is locked to the end edge of the fitting groove 131a to block it. There were no gaps that would cause problems with flame performance.

"Example 2"
Instead of the fireproof glass 11 of the fireproof glass mounting structure 10 of the first embodiment, a fireproof glass 31 made of laminated glass using a heat-resistant glass as shown in FIG. 3 was used. The fireproof glass plate 31 is configured by joining a first heat-resistant plate glass 31a and a second heat-resistant plate glass 31b via a resin layer 31c between the respective light-transmitting surfaces.

As the first heat-resistant plate glass 31a and the second heat-resistant plate glass 31b, a heat-resistant crystallized glass having an average linear expansion coefficient in the temperature range of 30 to 380 ° C. of −2 × 10 ⁻⁷ / K (manufactured by Nippon Electric Glass Co., Ltd. Name: Firelight), and a fluororesin film is thermocompression bonded as the resin layer 31c in the meantime. The fire prevention glass plate 31 made of this laminated glass was produced as follows.

  First, a first heat-resistant plate glass 31a and a second heat-resistant plate glass 31b having a thickness of W = 1000 × H = 2400 mm and a thickness of 4 mm are prepared, and the dimensions of the resin film of the resin layer 31c are W = 1000 × H = 2400 mm. It consists of a copolymer of 40% by weight of tetrafluoroethylene (TFE), 20% by weight of hexafluoropropylene (HEP) and 40% by weight of vinylidene fluoride (VDF), and consists only of a chain molecular structure having a thickness of 0.5 mm. A fluororesin film was prepared.

Subsequently, after arrange | positioning a fluororesin film over the whole surface of the 1st heat-resistant plate glass 31a, it was set as the laminated body by arranging and covering the 2nd heat-resistant plate glass 31b which has the same dimension. A vacuum packing is mounted around the laminated body, and the end surface of the laminated body is fitted into the groove of the vacuum packing. The laminated body with the vacuum packing is put in an autoclave apparatus, and a connection pipe of the vacuum packing is connected to a connection portion in the autoclave apparatus connected to a decompression pump, and the first and second heat-resistant glass plates 31a and 31b are decompressed. While removing bubbles generated at the end of the film, it was held in an environment of 140 ° C. and 12 kgf / cm ² for 15 minutes for thermocompression treatment. Thereafter, the laminated body is taken out from the autoclave device, the vacuum packing is removed, and a fireproof glass plate 31 made of laminated glass is formed.

  When the fire prevention glass plate 31 made of laminated glass of FIG. 3 is used for a specific fire prevention equipment, the upper outer frame member 131 and the inner frame member 132 are made of a low melting point alloy as in the equipment shown in FIG. It is integrated by the connecting member 133. In the glass holding groove of the frame body 12, the fire prevention glass plate 31 is inserted into the frame body 12 by being placed on the spacer 15 b of the lower frame 15 by placing only 5 mm on the upper and lower sides and the left and right sides. Between the fire protection plate glass 31 and the glass holding groove of the frame body 12, the ceramic fiber blanket material 16 is packed and the fireproof filler 17 is filled, resulting in a gap that becomes a problem in flameproof performance. There is nothing.

The average linear expansion coefficient in the temperature range of 30 to 380 ° C. of the steel material of the frame 12 is 183 × 10 ⁻⁷ / K, and the average linear expansion between the frame 12 and the first and second heat-resistant plate glasses 31 a and 31 b. The difference in coefficients is 185 × 10 ⁻⁷ / K. Further, according to the specifications using such laminated glass, even when a 45 kg shot bag is subjected to a pendulum type impact from a drop height of 120 cm in a JIS R3205 “laminated glass” impact test, , A hole through which a steel ball with a diameter of 65 mm penetrates does not open.

  When the same test as in Example 1 was performed, the fireproof glass plate 31 was not damaged even after 60 minutes from the start of heating, and the laminated glass using the first and second heat-resistant glass plates 31a and 31b and The gap which becomes a malfunction on flame-shielding performance did not arise between the frame bodies 12, and the test judgment passed. After the test, the connecting member 133 made of a low-melting-point alloy melts and the outer frame member 131 and the inner frame member 132 are separated from each other, and a gap that causes a problem in flame shielding performance is not generated as in the first embodiment. It was.

"Example 3"
The fireproof plate glass is made of heat-resistant crystallized glass which is transparent and has an average linear expansion coefficient of −2 × 10 ⁻⁷ / K similar to the laminated glass shown in FIG. 3, and has a size of 1200 × 2400 × 4 mm. And a second heat-resistant plate glass made of heat-resistant tempered glass (Nippon Sheet Glass Co., Ltd. name: Pyroclear) having the same dimensions and being transparent and having an average linear expansion coefficient of 88 × 10 ⁻⁷ / K. Laminated glass adhered to each other through a resin layer made of an ultraviolet curable resin mainly composed of acrylate was produced. The fireproof plate glass mounting structure using this laminated glass is made of heat-resistant tempered glass, which is cheaper and has higher in-plane strength. Therefore, it is possible to provide a specific fire prevention equipment which is superior in price and strength performance as compared with conventional products.

The average linear expansion coefficient in the temperature range of 30 to 380 ° C. of the steel material of the frame body 12 is 183 × 10 ⁻⁷ / K, and the difference in average linear expansion coefficient between the frame body 12 and the heat-resistant plate glass constituting the laminated glass is 185 × 10 ⁻⁷ / K.

Example 4
The fireproof plate glass mounting structure 20 of the second embodiment was tested in the same manner as in Example 1 above. As a result, the fireproof plate glass 21 was not damaged even after 60 minutes from the start of heating. The gap which becomes a malfunction on flame-shielding performance does not arise between the frame 22 and the frame body 22, and the test determination is acceptable. After the test, as shown in FIG. 2B, the outer frame member 231 and the inner frame member 232 are melted by melting the connecting member 233 made of a low-melting-point alloy in which the outer frame member 231 and the inner frame member 232 are integrated. As in Example 1, there was no occurrence of a gap that caused a problem in flame shielding performance.

  In the above embodiment, an example in which a laminated glass of heat-resistant crystallized glass plates and a heat-resistant crystallized glass plate and a heat-resistant tempered glass plate is used as the fireproof glass is shown, but the low expansion is made of borosilicate glass. Laminated glass with heat-resistant plate glass can also be used.

  The average linear expansion coefficient is measured according to JIS Z2285 “Measuring method of linear expansion coefficient of metal material” and JIS R3102 “Testing method of average linear expansion coefficient of glass”.

  The present invention is also applicable to specific fire prevention facilities and other fire prevention facilities.

10, 20 Fireproof glass plate mounting structure 11, 21, 31 Fireproof glass plates 11a, 21a Upper edge portions 12, 22 Frame bodies 13, 23 Upper frame 131, 231 Outer frame member 131a Fitting groove 132, 232 Inner frame member 232a Fitting Joint groove 131c, 232b Glass holding groove 133, 233 Connecting member 15 Lower frame 17 Sealing material 18 Building frame 31a First heat-resistant plate glass 31b Second heat-resistant plate glass

Claims (11)

A fireproof plate glass mounting structure in which a peripheral portion of a fireproof plate glass using a heat-resistant plate glass is held by a frame composed of an upper frame, a lower frame, and left and right vertical frames,
The upper frame of the frame body
An outer frame member fixed to the opening of the building frame;
An inner frame member that is fitted to the outer frame member so as to be relatively movable in a direction parallel to the light-transmitting surface of the fire protection plate glass, and holds the upper edge of the fire protection plate glass;
A fireproof flat glass mounting structure comprising:   2. The connecting member according to claim 1, further comprising a connecting member that integrally connects the outer frame member and the inner frame member, melts in a fire, and separates the outer frame member and the inner frame member so as to be relatively movable. Mounting structure for fireproof glass.   The fireproof flat glass mounting structure according to claim 2, wherein the connecting member is made of a low melting point alloy.   4. A fitting groove opened downward is formed in a lower portion of the outer frame member, and the inner frame member is fitted in the fitting groove so as to be relatively movable. A mounting structure for the fireproof glass described in 1.   4. A fitting groove opened upward is formed in an upper portion of the inner frame member, and the outer frame member is fitted in the fitting groove so as to be relatively movable. A mounting structure for the fireproof glass described in 1. Difference in average linear expansion coefficient at 30 to 380 ° C. and the heat resistant glass plate which constitutes the fireproof glazing and the frame body, according to claim 1 is within the range of ^{100 × 10 -7 / K~240 × 10} -7 / K The fireproof plate glass mounting structure according to claim 5.   The fireproof plate glass mounting structure according to any one of claims 1 to 6, wherein the flameproof effective portion of the frame is formed of a steel material having a thickness of 1.6 mm or more. Heat resistant glass plate constituting the fire plate glass, claim 1, characterized in that it has an average linear expansion coefficient of ^{-20 × 10 -7 / K~20 × 10} -7 / K in the temperature range of 30 to 380 ° C. The fireproof plate glass mounting structure according to claim 7. The fire-proof plate glass is a laminated glass formed by joining a plurality of plate glasses through a resin layer between light-transmitting planes, and at least one of the plate glasses is in a temperature range of 30 ° C to 380 ° C- ^{20 × 10 -7 / K~20 × 10} -7 / mounting structure fireproof glazing according to any one of claims 1 to 7, characterized in that the heat resistant glass plate having an average linear expansion coefficient of ^K .   The fireproof plate glass mounting structure according to any one of claims 1 to 9, wherein the fireproof plate glass has a thickness of 1 mm to 12 mm.   The fire prevention plate glass is inserted into the glass holding groove of the frame body only by 4.5 mm or more, and the space between the glass holding groove and the fire prevention plate glass is sealed with a sealing material made of a heat resistant material. The fireproof plate glass mounting structure according to any one of claims 1 to 10, wherein the fireproof plate glass has a mounting structure.

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