WO2018163783A1 - Multilayer glass unit and window fixture - Google Patents

Multilayer glass unit and window fixture Download PDF

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Publication number
WO2018163783A1
WO2018163783A1 PCT/JP2018/005796 JP2018005796W WO2018163783A1 WO 2018163783 A1 WO2018163783 A1 WO 2018163783A1 JP 2018005796 W JP2018005796 W JP 2018005796W WO 2018163783 A1 WO2018163783 A1 WO 2018163783A1
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WO
WIPO (PCT)
Prior art keywords
glass
multilayer glass
bag body
layer
sash frame
Prior art date
Application number
PCT/JP2018/005796
Other languages
French (fr)
Japanese (ja)
Inventor
勇一 臼井
耕一 八田
修 三浦
悦史 北原
原口　博光
Original Assignee
Ａｇｃ－Ｌｉｘｉｌウィンドウテクノロジー株式会社
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 Ａｇｃ－Ｌｉｘｉｌウィンドウテクノロジー株式会社 filed Critical Ａｇｃ－Ｌｉｘｉｌウィンドウテクノロジー株式会社
Priority to JP2019504433A priority Critical patent/JPWO2018163783A1/en
Publication of WO2018163783A1 publication Critical patent/WO2018163783A1/en

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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/06—Joining glass to glass by processes other than fusing
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/677—Evacuating or filling the gap between the panes ; Equilibration of inside and outside pressure; Preventing condensation in the gap between the panes; Cleaning the gap between the panes

Definitions

  • the present invention relates to a multilayer glass unit and a window fitting.
  • Double-layer glass is often used as a glass window from the viewpoint of heat insulation and soundproofing.
  • the multilayer glass has at least two glass plates and a spacer.
  • the two glass plates are separated by a spacer, and a hollow layer is formed between the two glass plates.
  • the both sides of the spacer are bonded to the two glass plates with a primary sealing material.
  • a secondary sealing material is sealed in the recessed part of the edge part between two glass plates. This constitutes a multi-layer glass.
  • the air or gas filled in the hollow layer is caused by a change in the internal or external pressure. Since it expands or contracts (hereinafter also referred to as “expands / contracts”), the two glass plates of the multilayer glass are bent. For example, if the altitude at the site where the multi-layer glass is installed is higher than the altitude of the multi-layer glass manufacturing plant, the hollow layer expands, so that the two glass plates bend in a curved direction in a direction away from each other. Mu The amount of bending of the two glass plates increases as the difference in elevation increases according to Boyle Charles' law.
  • the double-glazed glass of Patent Document 1 is provided with an internal / external through hole communicating with a sealed space (corresponding to a hollow layer) in at least one place of the double-glazed glass, and the double-glazed glass ( A device for automatically adjusting the internal pressure is provided so that the internal pressure and the external air pressure of the hollow layer are always substantially the same.
  • the automatic internal pressure adjusting device of Patent Document 1 has a cylinder having an outside air introduction hole and a movable bar that can move inside the cylinder, and an airtight ring is attached to the circumference of the movable bar.
  • Patent Document 1 discloses an example in which cylinders are arranged along two opposing sides of the peripheral edges of the four sides of the multilayer glass.
  • the internal pressure of the hollow layer tends to be higher than atmospheric pressure by suppressing the expansion of air, but in that case, the outside air introduction hole
  • the movable bar of the automatic internal pressure adjusting device moves in the direction in which the external air introduction hole is present, and the air in the hollow layer is taken into the cylinder.
  • the double-glazed glass of Patent Document 1 is not preferable in handling because the cylinder of the automatic internal pressure adjusting device is heavy, and the total weight of the double-glazed glass increases.
  • the cylinder is mounted on the multilayer glass, there is a problem that the multilayer glass may be damaged if the cylinder contacts the multilayer glass.
  • the glass plate used as a window joiner is not limited to the double-glazed glass, but the temperature of the central portion of the glass plate exposed to the outside air and the periphery of the glass plate fitted in the sash frame When a rapid temperature difference is generated between the glass plate and the glass plate, a difference in thermal expansion occurs in the glass plate, which may cause thermal cracking in the glass plate. Such a problem is known to occur when the morning sun is irradiated on a glass plate in a cold morning. Although the internal pressure automatic adjustment device of Patent Document 1 can prevent expansion and contraction of the hollow layer due to the difference in elevation, it cannot exert any effect on the above-described thermal cracking of the glass plate.
  • the present invention has been made in view of such circumstances, and provides a multi-layer glass unit and a window fitting capable of preventing thermal cracking of a glass plate while preventing expansion and contraction of a hollow layer due to an altitude difference.
  • the purpose is to do.
  • the multilayer glass unit of the present invention has at least two rectangular glass plates opposed to each other with a frame-shaped spacer interposed therebetween, and each of the spacers facing the glass plate.
  • a multilayer glass in which a side surface is bonded to a glass plate by a primary sealing material to form a hollow layer between the glass plates, and an outer side of the spacer and the primary sealing material is sealed by a secondary sealing material, and the exterior of the multilayer glass
  • a bag body disposed along the peripheral edge of the multilayer glass, the bag body being inflatable / contractable and in communication with the hollow layer.
  • the multilayer glass unit of the present invention when the air or gas in the hollow layer expands due to the difference in elevation, the air or gas in the hollow layer flows into the bag body from the hollow layer.
  • the hollow layer of the multilayer glass shrinks due to the difference in elevation, air or gas in the bag body flows into the hollow layer.
  • the air or gas of the warmed and expanded hollow layer flows from the hollow layer into the bag and warms the bag.
  • the air or gas in the bag is heated by the heat of the air or gas in the hollow layer by the convection of the air or gas flowing into the bag and the heat conduction of the bag.
  • the peripheral part of multilayer glass is heated with a bag body, and the temperature of the peripheral part of multilayer glass is brought close to the temperature of the center part of multilayer glass.
  • the thermal crack of a glass plate can be prevented.
  • the multilayer glass unit of the present invention it is possible to prevent thermal cracking of the glass plate while preventing expansion and contraction of the hollow layer due to the elevation difference.
  • the double glazing has a vent pipe penetrating through the secondary sealing material and the spacer, and the bag is communicated with the hollow layer via the vent pipe. It is preferable.
  • the double glazing has a first connecting pipe penetratingly disposed in the secondary sealing material and the spacer, and the bag body is a second penetratingly disposed in the bag body. It is preferable to have a connecting pipe, and the first connecting pipe and the second connecting pipe are detachably connected via a vent pipe.
  • the hollow layer and the bag can be communicated with each other via the vent pipe.
  • the bag body is preferably constituted by a film in which at least one resin layer and at least one gas impermeable layer are laminated.
  • the bag body since the bag body has flexibility and elasticity due to the resin layer, the glass plate is prevented from being damaged even if the bag body contacts the peripheral edge of the glass plate. be able to. Moreover, since the bag body has a gas impermeable layer, gas leakage from the bag body can be prevented.
  • the bag is housed in a groove section having a concave cross section surrounded by the opposing surface of the glass plate located at the peripheral edge of the multilayer glass and the outer surface of the secondary sealing material. It is preferable that the opening of the groove is covered with a cover material.
  • the bag body since the bag body is stored in the groove portion disposed along the peripheral edge portion of the multilayer glass, the peripheral edge portion of the multilayer glass can be efficiently heated by the bag body. Moreover, since the opening part of a groove part is covered with a cover material, a bag body can be protected from the exterior of a multilayer glass.
  • the window joinery of the present invention is a multi-layer glass unit of the present invention, a sash frame attached along the peripheral edges of the four sides of the multi-layer glass unit, and having a gap,
  • the bag body of the multilayer glass unit is housed in the gap portion of the sash frame.
  • the gap formed in the sash frame is used as a storage part for storing the double-glazed glass bag, a dedicated storage part for storing the bag is formed in the sash frame.
  • the existing sash frame can be used without doing so.
  • the sash frame can be warmed by the bag body to which the heat of the hollow layer is transmitted.
  • the sash frame is composed of a separable indoor sash frame and an outdoor sash frame, and the gap of the sash frame is assembled with the indoor sash frame and the outdoor sash frame.
  • the gap of the sash frame is assembled with the indoor sash frame and the outdoor sash frame.
  • it is preferably formed between the indoor sash frame and the outdoor sash frame.
  • the bag body can be stored in the gap formed between the indoor sash frame and the outdoor sash frame. Moreover, when removing from a sash frame at the time of maintaining a multilayer glass, an indoor sash frame and an outdoor sash frame are isolate
  • Schematic cross-sectional view of the main part showing the structure of the double-glazed glass The perspective view of the multilayer glass unit which concerns on 1st Embodiment.
  • Schematic sectional view of the main part of the multilayer glass unit of the first embodiment Schematic sectional view of the bag body explaining the configuration of the bag body
  • Front view of a multi-layer glass unit with an expanded bag The front view which shows the 1st modification of the multilayer glass unit of 1st Embodiment.
  • the front view which shows the 2nd modification of the multilayer glass unit of 1st Embodiment.
  • FIG. 8 is a schematic cross-sectional view of the main part of the sash frame shown in FIG.
  • FIG. 1 is a schematic cross-sectional view of a main part showing the configuration of a single multilayer glass 10.
  • the multi-layer glass 10 has two glass plates 12 and 12 and a frame-like spacer 14 configured in a rectangular shape (see FIG. 2).
  • the two glass plates 12 and 12 are separated by a spacer 14, and a hollow layer 16 is formed between the two glass plates 12 and 12.
  • Both sides 14A of the spacer 14 are bonded to the two glass plates 12 and 12 by a primary sealing material 18 such as a butyl sealant.
  • a primary sealing material 18 such as a butyl sealant.
  • a secondary sealing material 20 such as a silicone-based sealing material, a polysulfide-based sealing material, a polyurethane-based sealing material, or a butyl-based sealing material is sealed in the recess 13 at the edge between the two glass plates 12, 12. Is done.
  • the multilayer glass 10 is comprised.
  • the spacer 14 is formed of a hollow pipe material, and the hollow portion 14B of the spacer 14 is filled with a drying material 22 such as zeolite. Further, the spacer 14 is formed with a through hole 14 ⁇ / b> C that communicates the hollow portion 14 ⁇ / b> B and the hollow layer 16, whereby the air in the hollow layer 16 is dried by the desiccant 22. Insulating gas (inert gas such as argon gas or krypton glass) may be enclosed in the hollow layer 16 instead of air. Thereby, the heat insulation of the multilayer glass 10 is improved.
  • a drying material 22 such as zeolite
  • the heat insulation gas is sealed in the hollow layer 16 by, for example, forming a through-hole penetrating the hollow layer 16 in a corner key (not shown) located at a corner portion of the spacer 14 and injecting gas into the hollow layer 16 from the through-hole. Insulating gas is injected by the device. After injecting the insulating gas, the through hole of the corner key is sealed with a cap (not shown). Thereafter, the above-described secondary sealing material 20 is sealed in the concave portion 13 at the edge between the two glass plates 12 and 12. The heat insulating gas can be sealed in the hollow layer 16 by the above operation.
  • the spacer 14 includes a spacer that has been bent into a frame shape by a bender device in advance (not using a corner key) in addition to a corner key.
  • the glass plate 12 of the multilayer glass 10 may be a so-called float glass manufactured by a float process, or may be fireproof glass such as template glass or netted glass, or laminated glass.
  • the number of the glass plates 12 is not limited to two, and may be a multi-layer glass provided with at least two glass plates.
  • a first spacer is formed between a first glass plate and a second glass plate to form a first hollow layer, and a second glass plate and a third glass plate are provided.
  • the second spacer is disposed between the glass plate and the second hollow layer.
  • FIG. 2 is a perspective view of the multilayer glass unit 30 according to the first embodiment in which the bag body 32 is provided on the multilayer glass 10 shown in FIG.
  • the bag body 32 of the multilayer glass unit 30 is disposed outside the multilayer glass 10 and communicated with the hollow layer 16 (see FIG. 1).
  • the bag body 32 is formed in a cylindrical shape from a material that can be expanded and contracted, and is disposed along the peripheral edge portions 11 on the four sides of the multilayer glass 10.
  • the peripheral edge portion 11 of the multilayer glass 10 refers to the end surface portion 12A of the glass plate 12 or the peripheral surface portion 12B including the end surface portion 12A as shown in FIG.
  • these surface portions are collectively referred to as the peripheral portion 11.
  • the bag body 32 is disposed in the vicinity of the four peripheral edges 11 of the multilayer glass 10.
  • a vent pipe 34 is disposed through the secondary sealing material 20 and the spacer 14.
  • a structure in which the bag body 32 is communicated with the hollow layer 16 through the trachea 34 is employed.
  • the vent pipe 34 is provided in the vicinity of the upper right corner portion 10 ⁇ / b> A of the multilayer glass 10, but is not limited to this position.
  • the vent pipe 34 may be provided at the corner key.
  • a through hole (not shown) is formed on the surface of the glass plate 12, and the bag body 32 communicates with the hollow layer 16 through the through hole. It is also possible to apply a communication structure.
  • vent pipe 34 is shown for one bag 32, but the present invention is not limited to this.
  • Two or more vent pipes 34 may be provided for one bag body 32.
  • a plurality of vent pipes 34 are provided, convection of air or heat insulating gas in the hollow layer 16 is promoted, so that heat can be quickly transferred to the peripheral portion 11.
  • FIG. 4 is a schematic cross-sectional view of the bag body 32 illustrating the configuration of the bag body 32.
  • the bag body 32 is formed of a film in which at least one resin layer 36 and at least one gas impermeable layer 38 are laminated.
  • the resin layers 36 and the gas impermeable layers 38 may be alternately stacked.
  • the resin layer 36 is an inner layer of the bag 32, and examples of the resin layer 36 include polyvinylidene chloride or a polyvinyl fluorine film.
  • the gas non-permeable layer 38 is an outer layer of the bag 32, and the gas non-permeable layer 38 is a metal layer containing silver, aluminum or an alloy or mixture thereof, ceramic containing silicon oxide, silicon nitride or a mixture thereof.
  • the layer examples include an aluminum laminate, a metallized film, a silicon oxide-coated film, and an aluminum oxide film.
  • an aluminum laminate is preferable because of its high thermal conductivity.
  • the bag body 32 also has a function of heating the peripheral portions 11 on the four sides of the multilayer glass 10. Therefore, it is preferable to use aluminum having high thermal conductivity as the material of the bag body 32.
  • the resin layer 36 may be disposed outside the bag body 32, and the gas impermeable layer 38 may be disposed inside the bag body 32. Further, the gas non-permeable layer 38 does not have a property of not transmitting gas at all, but includes a property of not easily transmitting gas.
  • the cross-sectional shape perpendicular to the length direction when the bag body 32 is inflated may be a substantially circular shape or a substantially rectangular shape, and is not limited thereto.
  • the ventilation pipe 34 can suppress gas permeability by making it thick, it is desirable to provide a gas non-permeable layer.
  • the multi-layer glass unit 30 is manufactured in a lowland and used in a highland as an example.
  • the bag body 32 of the multilayer glass unit 30 manufactured in the lowland is not filled with air or heat insulating gas, and the bag body 32 is in a contracted state in the lowland (see FIG. 3). It is communicated to.
  • the double glazing unit 30 configured in this way, when the double glazing unit 30 is transported from a low altitude to a high altitude, the air or the heat insulating gas in the hollow layer 16 of the double glazing 10 is caused by an altitude difference.
  • the air or heat insulating gas in the expanded hollow layer 16 flows from the hollow layer 16 into the bag body 32 through the vent pipe 34.
  • swelling of the hollow layer 16 produced when the multilayer glass unit 30 is conveyed from a lowland to a highland can be prevented.
  • the internal pressure of the hollow layer 16 can be kept constant by the air or the heat insulating gas once entering the bag body 32 returning to the hollow layer 16.
  • the multilayer glass unit 30 conveyed from the low ground to the high ground has the bag 32 inflated and contacts the peripheral edge 11 of the multilayer glass 10. Since the bag body 32 is partly bonded to the peripheral edge portion 11 of the multilayer glass 10 with an adhesive in advance, even when the bag body 32 expands, the bag body 32 has four sides of the multilayer glass 10. It is held in contact with the peripheral edge 11. In addition, the bag body 32 does not necessarily need to be in contact with the peripheral edge portion 11 of the multilayer glass 10.
  • the position of the bag body 32 with respect to the multilayer glass 10 may be a position close to the peripheral edge portion 11 of the multilayer glass 10 and capable of transmitting the temperature of the bag body 32 to the peripheral edge portion 11 by convection or radiation.
  • the means for bonding the bag body 32 to the multilayer glass 10 in the case of bonding the bag body 32 to the multilayer glass 10 is not limited to an adhesive, but a double-sided adhesive tape or a magic tape ( Kuraray Co., Ltd. trade name) may be used, and other holding means may be used. Furthermore, it is not essential to adhere the bag body 32 to the peripheral edge portions 11 on the four sides of the multilayer glass 10. As will be described later, the bag body 32 is held by a sash frame or a ridge constituting the window joinery, A structure in which the body 32 is brought into contact with the peripheral edge portion 11 can also be applied.
  • the multilayer glass unit 30 has a function of heating the peripheral portions 11 on the four sides of the multilayer glass 10 by the bag body 32.
  • the air or heat insulating gas in the hollow layer 16 that has been heated and expanded by solar radiation flows into the bag body 32 from the hollow layer 16 through the vent pipe 34, and the bag body 32 is added. Warm up. Or the air or heat insulation gas of the bag body 32 is warmed by the heat of the air or heat insulation gas of the hollow layer 16 by the convection of the air or heat insulation gas which flowed into the bag body 32, and the heat conduction of the bag body 32. When it does so, the peripheral part 11 of 4 sides which the bag body 32 is contacting is heated by the bag body 32, and the temperature of the peripheral part 11 of 4 sides is brought close to the temperature of the center part of the multilayer glass 10. FIG. Thereby, according to the multilayer glass unit 30, the thermal crack of the glass plate 12 can be prevented. In addition, even if it is the aspect which made the bag body 32 contact the peripheral part 11 below 3 sides, there exists an effect which prevents a thermal crack.
  • the multilayer glass unit 30 it is possible to prevent thermal cracking of the glass plate 12 while preventing the hollow layer 16 from expanding due to an elevation difference.
  • the multilayer glass unit 30 has a vent pipe 34 penetratingly disposed in the secondary sealing material 20 and the spacer 14, and the bag body 32 communicates with the hollow layer 16 through the vent pipe 34. Thereby, the hollow layer 16 and the bag body 32 can be reliably communicated.
  • the bag body 32 of the multilayer glass unit 30 is constituted by a film in which at least one resin layer 36 and at least one gas impermeable layer 38 are laminated.
  • the bag body 32 has flexibility and elasticity due to the resin layer 36, so even if the bag body 32 is in contact with the peripheral edge portion 11 of the multilayer glass 10, Damage to the glass plate 12 can be prevented. Further, since the bag body 32 has the gas impermeable layer 38, gas leakage from the bag body 32 can be prevented. Moreover, the bag body 32 can swell in a shape that matches the space shape between the peripheral edge portion 11 of the multilayer glass 10 and the sash frame.
  • the multilayer glass unit 30 of 1st Embodiment connected the hollow layer 16 and the bag body 32 via the one ventilation pipe
  • the sound energy transmitted through the multi-layer glass 10 can be guided to the holes of the vent pipe 34 so that the sound energy can be attenuated in the bag 32, thereby improving the sound insulation performance. Can be made.
  • FIG. 6 is a front view showing a first modification of the multilayer glass unit 30 of the first embodiment.
  • the ventilation pipe 34 ⁇ / b> A is arranged on every four sides of the multilayer glass 10, and the bag body 32 can be communicated with the hollow layer 16 through the ventilation pipe 34 ⁇ / b> A.
  • the air or the heat insulating gas expanded in the hollow layer 16 can flow into the bag body 32 in a short time.
  • the multilayer glass unit 30 of 1st Embodiment has arrange
  • FIG. 7 is a front view showing a second modification of the multilayer glass unit 30 of the first embodiment.
  • a short bag body 32A corresponding to the length of one side is arranged for each of the four peripheral edge portions 11 of the multilayer glass 10, and these bag bodies 32A are respectively connected through the vent pipe 34A. Even if it communicates with the hollow layer 16, the same effect as the first modification can be obtained. Further, the connection position of the vent pipe 34A to the bag body 32A is preferably the central portion in the longitudinal axis direction of the bag body 32A. Thereby, the air or heat insulation gas which flowed in from the hollow layer 16 flows smoothly into the bag body 32A.
  • the multilayer glass unit 30 has the following effects in addition to the above effects.
  • the double glazing unit 30 prevents the distortion of the reflected image due to the expansion or contraction of the air or the insulating gas due to the altitude difference or the seasonal fluctuation of the temperature. Can do. Further, since there is no change in the difference between the internal pressure of the hollow layer 16 and the atmospheric pressure, the thickness of the double-glazed glass 10 does not change, so that the installation on the sash frame or the eave becomes easy. In addition, the multilayer glass unit 30 can be transported from the lowland to the highland without adjusting the internal pressure. Moreover, since the multilayer glass unit 30 can change the size of the bag body 32 easily according to the altitude of the field, there exists an advantage that an application range does not receive the restriction
  • the multilayer glass applicable to the multilayer glass unit can be applied even to a multilayer glass structure in which three or four or more glass plates are separated via a hollow layer. it can.
  • the number of bag bodies corresponding to the number of hollow layers may be aligned, and the bag bodies may be communicated with each hollow layer, or a plurality of hollow layers may be communicated to form one bag body for at least one hollow layer. May be communicated.
  • FIG. 8 is a schematic cross-sectional view enlarging a main part showing the multilayer glass unit 40 of the second embodiment.
  • the double-glazed unit 40 shown in FIG. 8 has a bag body 32 that is opposite to the opposing surfaces 12C and 12C of the two glass plates 12 and 12 positioned on the peripheral edge 11 of the double-glazed glass 10 and the secondary sealing material 20. It is housed in a groove 42 having a concave cross section surrounded by the surface 20A. The groove 42 is disposed along the peripheral edge 11 on the four sides of the multilayer glass 10. Further, the open portion 42A of the groove portion 42 is covered with a cover material 44 having a U-shaped cross section.
  • FIG. 9 is an enlarged schematic cross-sectional view of a main part of the multilayer glass unit 40 in which the bag body 32 is expanded.
  • swelling of the hollow layer 16 produced when the multilayer glass unit 40 is conveyed from a lowland to a highland can be prevented.
  • the air or heat insulating gas of the hollow layer 16 that has been heated and expanded by solar radiation flows into the bag body 32 from the hollow layer 16 through the vent pipe 34, The bag body 32 is heated. Or the air or heat insulation gas of the bag body 32 is warmed by the heat of the air or heat insulation gas of the hollow layer 16 by the convection of the air or heat insulation gas which flowed into the bag body 32, and the heat conduction of the bag body 32.
  • the peripheral part 11 of 4 sides which the bag body 32 is contacting is heated by the bag body 32, and the temperature of the peripheral part 11 of 4 sides is brought close to the temperature of the center part of the multilayer glass 10.
  • the thermal crack of the glass plate 12 can be prevented.
  • the multilayer glass unit 40 of 2nd Embodiment since the bag body 32 is accommodated in the groove part 42 arrange
  • FIG. 10 is a schematic cross-sectional view of the main part of the window fitting 50 of the first embodiment. Moreover, in FIG. 10, the window fitting 50 which accommodates the expanded bag body 32 is shown.
  • a window joinery 50 shown in FIG. 10 is a sash frame (frame) attached to the multilayer glass unit 30 and the peripheral edge 11 on the four sides of the multilayer glass unit 30 and having a gap (also referred to as a hollow space) 52. 54).
  • the window fitting 50 is configured such that the bag body 32 is accommodated in the gap 52 of the sash frame 54.
  • the gap portion 52 formed in advance in the sash frame 54 is used as a storage portion for storing the bag body 32, a dedicated storage portion for storing the bag body 32 is provided in the sash frame 54.
  • the existing sash frame 54 can be used without being formed.
  • the sash frame 54 can also be warmed by the bag body 32 to which the heat of the hollow layer 16 is transmitted. Further, since the bag body 32 is soft, it can be easily accommodated in the gaps 52 having different dimensions and shapes by changing the shape.
  • FIG. 11 is a schematic cross-sectional view of the main part of the window fitting 60 of the second embodiment.
  • FIG. 12 is a schematic cross-sectional view of the main part in a state where the sash frame 62 constituting the window joinery 60 is divided into two parts.
  • 11 and 12 has a sash frame 62 composed of an indoor sash frame 64 and an outdoor sash frame 66 that are separable from each other.
  • the gap 68 of the sash frame 62 is formed between the indoor sash frame 64 and the outdoor sash frame 66 by assembling the indoor sash frame 64 and the outdoor sash frame 66.
  • the bag body 32 is placed in the space 68 formed between the indoor sash frame 64 and the outdoor sash frame 66 by assembling the indoor sash frame 64 and the outdoor sash frame 66. Can be stored. Moreover, when removing from the sash frame 62 when maintaining the multilayer glass unit 30, the indoor sash frame 64 and the outdoor sash frame 66 are separated. Thereby, the multilayer glass unit 30 can be easily removed from the sash frame 62.
  • the sash frame 62 has a two-part structure composed of an indoor sash frame 64 and an outdoor sash frame 66, the design of materials, colors, etc. can be changed indoors and outdoors.
  • the connection structure of the indoor sash frame 64 and the outdoor sash frame 66 may be connected using a coupling tool such as a screw, and the fitting portions 64A and 66A are formed to form the fitting portions 64A, 66A may be fitted and connected.
  • a multi-layer glass unit manufactured in a high altitude when installed in a low altitude, it is preferable to enclose air or heat insulating gas in the bag body in advance. Since the hollow layer contracts when the multi-layer glass produced in the highland is conveyed to the lowland, air or heat insulating gas in the bag flows into the hollow layer in this case. Thereby, shrinkage
  • FIG. 13 is a schematic cross-sectional view enlarging a main part showing the multilayer glass unit 70 of the third embodiment.
  • the multilayer glass unit 70 has a valve (first connecting pipe) 72 that penetrates the spacer 14 and the secondary seal material 20 and communicates the hollow layer 16 with the outside.
  • a valve 72 By providing the valve 72, the tubular vent tube 34A can be attached to and detached from the multilayer glass 10.
  • the connection member (second connection pipe) 74 is also used to connect the bag body 32 and the vent pipe 34A, so that the bag body 32 can be attached to and detached from the vent pipe 34A. With such a configuration, if the bag body 32 or the vent pipe 34A is damaged or deteriorated, it can be easily replaced. Also in the multilayer glass unit 70, it is preferable to store the bag body 32 in the concave groove portion 42 shown in FIG.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Wing Frames And Configurations (AREA)

Abstract

Provided are a multilayer glass unit and a window fixture which can prevent thermal cracking while preventing the expansion and contraction of a hollow layer caused by a height difference. This multilayer glass unit is provided with a multilayer glass and a bag body. The multilayer glass is formed such that: at least two sheets of rectangular glass plates facing each other are installed spaced apart by means of a frame-shaped spacer; glass plate-facing side surfaces of the spacer are respectively bonded to the glass plates by means of first seal members, and thus a hollow layer is formed between the glass plates; and the spacer and the outer sides of the first seal members are sealed by means of second seal members. The bag body is disposed, outside the multilayer glass, along peripheral edge sections of the multilayer glass, communicates with the hollow layer, and is expandable and contractible.

Description

複層ガラスユニット及び窓建具Multi-layer glass unit and window fittings
　本発明は、複層ガラスユニット及び窓建具に関する。 The present invention relates to a multilayer glass unit and a window fitting.
　断熱性と防音性の観点から、ガラス窓として複層ガラスが多用されている。複層ガラスは、少なくとも２枚のガラス板とスペーサとを有する。２枚のガラス板はスペーサによって隔置され、２枚のガラス板の間に中空層が形成される。スペーサは、その両側面が一次シール材によって２枚のガラス板に接着される。これによって、２枚のガラス板で挟まれる中空層が封止される。また、２枚のガラス板の間の端縁部の凹部に二次シール材が封着される。これによって複層ガラスが構成される。 Double-layer glass is often used as a glass window from the viewpoint of heat insulation and soundproofing. The multilayer glass has at least two glass plates and a spacer. The two glass plates are separated by a spacer, and a hollow layer is formed between the two glass plates. The both sides of the spacer are bonded to the two glass plates with a primary sealing material. As a result, the hollow layer sandwiched between the two glass plates is sealed. Moreover, a secondary sealing material is sealed in the recessed part of the edge part between two glass plates. This constitutes a multi-layer glass.
　ところで、複層ガラスは、複層ガラスの製造工場と、複層ガラスが設置される現場との間に標高差が生じると、中空層に満たされた空気又はガスが気圧の内外差の変化により膨張又は収縮する（以下、「膨縮する」とも言う。）ので、複層ガラスの２枚のガラス板に撓みが発生する。例えば、複層ガラスの製造工場の標高よりも複層ガラスが設置される現場の標高が高い場合には、中空層が膨張するので、２枚のガラス板は互いに離間する方向に湾曲状に撓む。２枚のガラス板の撓み量は、ボイルシャルルの法則により標高差が大きくなるに従い大きくなる。このため、撓んだ２枚のガラス板から、中空層を封止している一次シール材及び二次シール材に負荷がかかり、その負荷によって一次シール材及び二次シール材に過度の引きはがし力がかかると、中空層の気密性が損なわれるという懸念がある。なお、ボイルシャルルの法則に基づけば、中空層の膨張量は無視できない大きなものである。 By the way, when there is an elevation difference between the glass manufacturing factory and the site where the glass is installed, the air or gas filled in the hollow layer is caused by a change in the internal or external pressure. Since it expands or contracts (hereinafter also referred to as “expands / contracts”), the two glass plates of the multilayer glass are bent. For example, if the altitude at the site where the multi-layer glass is installed is higher than the altitude of the multi-layer glass manufacturing plant, the hollow layer expands, so that the two glass plates bend in a curved direction in a direction away from each other. Mu The amount of bending of the two glass plates increases as the difference in elevation increases according to Boyle Charles' law. For this reason, a load is applied to the primary sealing material and the secondary sealing material sealing the hollow layer from the two bent glass plates, and the primary sealing material and the secondary sealing material are excessively peeled by the load. When force is applied, there is a concern that the airtightness of the hollow layer is impaired. In addition, based on Boyle's law, the amount of expansion of the hollow layer is a large one that cannot be ignored.
　上記の問題を解消するため、特許文献１の複層ガラスは、複層ガラスの少なくとも１カ所に密閉空間（中空層に相当）を連通する内外貫通孔を設け、内外貫通孔に複層ガラス（中空層）の内圧と外気圧とを常にほぼ同一にする内圧自動調整装置が取り付けられている。 In order to solve the above problem, the double-glazed glass of Patent Document 1 is provided with an internal / external through hole communicating with a sealed space (corresponding to a hollow layer) in at least one place of the double-glazed glass, and the double-glazed glass ( A device for automatically adjusting the internal pressure is provided so that the internal pressure and the external air pressure of the hollow layer are always substantially the same.
　特許文献１の内圧自動調整装置は、外気導入孔を持つシリンダーと、シリンダー内部に移動可能な可動棒材とを有し、可動棒材の円周には気密リングが装着されている。また、特許文献１には、複層ガラスの４辺の周縁部のうち対向する２辺に沿ってシリンダーが配置されている例が開示されている。 The automatic internal pressure adjusting device of Patent Document 1 has a cylinder having an outside air introduction hole and a movable bar that can move inside the cylinder, and an airtight ring is attached to the circumference of the movable bar. Patent Document 1 discloses an example in which cylinders are arranged along two opposing sides of the peripheral edges of the four sides of the multilayer glass.
　特許文献１の複層ガラスによれば、例えば、高地での使用の場合、空気の膨張をガラスが抑え込むことにより中空層の内圧は大気圧より高くなろうとするが、その場合には外気導入孔よりシリンダー外に空気を吐き出しつつ、内圧自動調整装置の可動棒材が外気導入孔のある方向に動き、中空層の空気をシリンダー内に取り込む。これにより、特許文献１の複層ガラスによれば、複層ガラスの中空層の膨張を抑えることができる。 According to the double-layer glass of Patent Document 1, for example, when used in high altitudes, the internal pressure of the hollow layer tends to be higher than atmospheric pressure by suppressing the expansion of air, but in that case, the outside air introduction hole As the air is discharged outside the cylinder, the movable bar of the automatic internal pressure adjusting device moves in the direction in which the external air introduction hole is present, and the air in the hollow layer is taken into the cylinder. Thereby, according to the multilayer glass of patent document 1, the expansion | swelling of the hollow layer of a multilayer glass can be suppressed.
特開平７－４２４５２号公報Japanese Unexamined Patent Publication No. 7-42452
　しかしながら、特許文献１の複層ガラスは、内圧自動調整装置のシリンダーが重量物なので複層ガラスの総重量が大きくなり、取り扱い性が好ましくない。また、複層ガラスにシリンダーを装着する際に、シリンダーが複層ガラスに接触すると、複層ガラスを損傷させる虞があるという問題がある。 However, the double-glazed glass of Patent Document 1 is not preferable in handling because the cylinder of the automatic internal pressure adjusting device is heavy, and the total weight of the double-glazed glass increases. In addition, when the cylinder is mounted on the multilayer glass, there is a problem that the multilayer glass may be damaged if the cylinder contacts the multilayer glass.
　一方、複層ガラスに限定されるものではないが、窓建具として使用されるガラス板は、外気に露出しているガラス板の中央部の温度と、サッシ枠に嵌め込まれているガラス板の周縁部の温度との間に急激な温度差が生じると、ガラス板に熱膨張の差が生じてガラス板に熱割れが発生する場合がある。このような問題は、寒い朝にガラス板に朝日が照射されたときに発生することが知られている。特許文献１の内圧自動調整装置は、標高差に起因する中空層の膨縮を防止することができるものの、上述したガラス板の熱割れについては何の効果も発揮することができない。 On the other hand, the glass plate used as a window joiner is not limited to the double-glazed glass, but the temperature of the central portion of the glass plate exposed to the outside air and the periphery of the glass plate fitted in the sash frame When a rapid temperature difference is generated between the glass plate and the glass plate, a difference in thermal expansion occurs in the glass plate, which may cause thermal cracking in the glass plate. Such a problem is known to occur when the morning sun is irradiated on a glass plate in a cold morning. Although the internal pressure automatic adjustment device of Patent Document 1 can prevent expansion and contraction of the hollow layer due to the difference in elevation, it cannot exert any effect on the above-described thermal cracking of the glass plate.
　本発明は、このような事情に鑑みてなされたもので、標高差に起因する中空層の膨縮を防止しつつガラス板の熱割れを防止することができる複層ガラスユニット及び窓建具を提供することを目的とする。 The present invention has been made in view of such circumstances, and provides a multi-layer glass unit and a window fitting capable of preventing thermal cracking of a glass plate while preventing expansion and contraction of a hollow layer due to an altitude difference. The purpose is to do.
　本発明の複層ガラスユニットは、本発明の目的を達成するために、対向する少なくとも２枚の矩形状のガラス板が枠状のスペーサを介して隔置され、ガラス板と対向するスペーサの各側面が一次シール材によってガラス板に接着されてガラス板間に中空層が形成され、スペーサと一次シール材の外側が二次シール材によって封止されてなる複層ガラスと、複層ガラスの外部の複層ガラスの周縁部に沿って配置された袋体であって、中空層と連通された膨縮可能な袋体と、を備える。 In order to achieve the object of the present invention, the multilayer glass unit of the present invention has at least two rectangular glass plates opposed to each other with a frame-shaped spacer interposed therebetween, and each of the spacers facing the glass plate. A multilayer glass in which a side surface is bonded to a glass plate by a primary sealing material to form a hollow layer between the glass plates, and an outer side of the spacer and the primary sealing material is sealed by a secondary sealing material, and the exterior of the multilayer glass And a bag body disposed along the peripheral edge of the multilayer glass, the bag body being inflatable / contractable and in communication with the hollow layer.
　本発明の複層ガラスユニットによれば、中空層の空気又はガスが標高差に起因して膨張していくと、中空層の空気又はガスは中空層から袋体に流入する。一方、複層ガラスの中空層が標高差に起因して収縮していくと、袋体内の空気又はガスが中空層に流入する。これにより、本発明の複層ガラスユニットによれば、標高差に起因する中空層の膨縮を防止することができる。 According to the multilayer glass unit of the present invention, when the air or gas in the hollow layer expands due to the difference in elevation, the air or gas in the hollow layer flows into the bag body from the hollow layer. On the other hand, when the hollow layer of the multilayer glass shrinks due to the difference in elevation, air or gas in the bag body flows into the hollow layer. Thereby, according to the multilayer glass unit of this invention, the expansion / contraction of the hollow layer resulting from an altitude difference can be prevented.
　また、本発明の複層ガラスユニットによれば、複層ガラスが朝日によって温められると、温められて膨張した中空層の空気又はガスが、中空層から袋体に流入して袋体を加温する。又は、袋体に流入した空気又はガスの対流、及び袋体の熱伝導によって袋体の空気又はガスが中空層の空気又はガスの熱によって温められる。これにより、複層ガラスの周縁部が袋体によって加温され、複層ガラスの周縁部の温度が複層ガラスの中央部の温度に近づけられる。これにより、本発明の複層ガラスユニットによれば、ガラス板の熱割れを防止することができる。 Further, according to the double-glazed unit of the present invention, when the double-glazed glass is warmed by Asahi, the air or gas of the warmed and expanded hollow layer flows from the hollow layer into the bag and warms the bag. To do. Alternatively, the air or gas in the bag is heated by the heat of the air or gas in the hollow layer by the convection of the air or gas flowing into the bag and the heat conduction of the bag. Thereby, the peripheral part of multilayer glass is heated with a bag body, and the temperature of the peripheral part of multilayer glass is brought close to the temperature of the center part of multilayer glass. Thereby, according to the multilayer glass unit of this invention, the thermal crack of a glass plate can be prevented.
　したがって、本発明の複層ガラスユニットによれば、標高差に起因する中空層の膨縮を防止しつつガラス板の熱割れを防止することができる。 Therefore, according to the multilayer glass unit of the present invention, it is possible to prevent thermal cracking of the glass plate while preventing expansion and contraction of the hollow layer due to the elevation difference.
　本発明の複層ガラスユニットの一態様は、複層ガラスには、二次シール材とスペーサとに貫通配置された通気管を有し、袋体は、通気管を介して中空層に連通されることが好ましい。 In one aspect of the double glazing unit of the present invention, the double glazing has a vent pipe penetrating through the secondary sealing material and the spacer, and the bag is communicated with the hollow layer via the vent pipe. It is preferable.
　本発明の複層ガラスユニットの一態様は、複層ガラスは、二次シール材とスペーサとに貫通配置された第１接続管を有し、袋体は、袋体に貫通配置された第２接続管を有し、第１接続管と第２接続管とは通気管を介して着脱可能に接続されることが好ましい。 In one aspect of the double glazing unit of the present invention, the double glazing has a first connecting pipe penetratingly disposed in the secondary sealing material and the spacer, and the bag body is a second penetratingly disposed in the bag body. It is preferable to have a connecting pipe, and the first connecting pipe and the second connecting pipe are detachably connected via a vent pipe.
　本発明の一態様によれば、通気管を介して中空層と袋体とを連通させることができる。 According to one aspect of the present invention, the hollow layer and the bag can be communicated with each other via the vent pipe.
　本発明の複層ガラスユニットの一態様は、袋体は、少なくとも１つの樹脂層と少なくとも１つのガス非透過性層とを積層したフィルムによって構成されることが好ましい。 In one aspect of the multilayer glass unit of the present invention, the bag body is preferably constituted by a film in which at least one resin layer and at least one gas impermeable layer are laminated.
　本発明の一態様によれば、袋体は、樹脂層によって柔軟性及び弾力性を有しているので、ガラス板の周縁部に袋体が接触してもガラス板が損傷するのを防止することができる。また、袋体は、ガス非透過性層を有しているので、袋体からのガス漏れを防止することができる。 According to one aspect of the present invention, since the bag body has flexibility and elasticity due to the resin layer, the glass plate is prevented from being damaged even if the bag body contacts the peripheral edge of the glass plate. be able to. Moreover, since the bag body has a gas impermeable layer, gas leakage from the bag body can be prevented.
　本発明の複層ガラスユニットの一態様は、袋体は、複層ガラスの周縁部に位置するガラス板の対向面と、二次シール材の外表面とに包囲される断面凹状の溝部に収納され、溝部の開放部がカバー材によって覆われることが好ましい。 In one aspect of the multilayer glass unit of the present invention, the bag is housed in a groove section having a concave cross section surrounded by the opposing surface of the glass plate located at the peripheral edge of the multilayer glass and the outer surface of the secondary sealing material. It is preferable that the opening of the groove is covered with a cover material.
　本発明の一態様によれば、複層ガラスの周縁部に沿って配置された溝部に袋体が収納されるので、複層ガラスの周縁部を袋体によって効率よく加温することができる。また、溝部の開口部をカバー材によって覆うので、袋体を複層ガラスの外部から保護することができる。 According to one aspect of the present invention, since the bag body is stored in the groove portion disposed along the peripheral edge portion of the multilayer glass, the peripheral edge portion of the multilayer glass can be efficiently heated by the bag body. Moreover, since the opening part of a groove part is covered with a cover material, a bag body can be protected from the exterior of a multilayer glass.
　本発明の窓建具は、本発明の目的を達成するために、本発明の複層ガラスユニットと、複層ガラスユニットの４辺の周縁部に沿って取り付けられて空隙部を有するサッシ枠と、を備えた建具において、複層ガラスユニットの袋体は、サッシ枠の空隙部に収納される。 In order to achieve the object of the present invention, the window joinery of the present invention is a multi-layer glass unit of the present invention, a sash frame attached along the peripheral edges of the four sides of the multi-layer glass unit, and having a gap, In the joinery provided with, the bag body of the multilayer glass unit is housed in the gap portion of the sash frame.
　本発明の窓建具によれば、サッシ枠に形成されている空隙部を、複層ガラスの袋体を収納する収納部として利用したので、袋体を収納する専用の収納部をサッシ枠に形成することなく、既存のサッシ枠を使用することができる。また、本発明の窓建具によれば、中空層の熱が伝達されている袋体によってサッシ枠を温めることができる。 According to the window joinery of the present invention, since the gap formed in the sash frame is used as a storage part for storing the double-glazed glass bag, a dedicated storage part for storing the bag is formed in the sash frame. The existing sash frame can be used without doing so. Moreover, according to the window joinery of the present invention, the sash frame can be warmed by the bag body to which the heat of the hollow layer is transmitted.
　本発明の窓建具の一態様は、サッシ枠は、分離可能な室内側サッシ枠と室外側サッシ枠とから構成され、サッシ枠の空隙部は、室内側サッシ枠と室外側サッシ枠とを組み付けることにより、室内側サッシ枠と室外側サッシ枠との間に形成されることが好ましい。 In one aspect of the window joinery of the present invention, the sash frame is composed of a separable indoor sash frame and an outdoor sash frame, and the gap of the sash frame is assembled with the indoor sash frame and the outdoor sash frame. Thus, it is preferably formed between the indoor sash frame and the outdoor sash frame.
　本発明の一態様によれば、室内側サッシ枠と室外側サッシ枠を組み付けることにより、室内側サッシ枠と室外側サッシ枠との間に形成される空隙部に袋体を収納することができる。また、複層ガラスをメンテナンスする際にサッシ枠から取り外す場合には、室内側サッシ枠と室外側サッシ枠とを分離する。これにより、複層ガラスをサッシ枠から容易に取り外すことができる。 According to one aspect of the present invention, by assembling the indoor sash frame and the outdoor sash frame, the bag body can be stored in the gap formed between the indoor sash frame and the outdoor sash frame. . Moreover, when removing from a sash frame at the time of maintaining a multilayer glass, an indoor sash frame and an outdoor sash frame are isolate | separated. Thereby, multilayer glass can be easily removed from a sash frame.
　本発明によれば、標高差に起因する中空層の膨縮を防止しつつ熱割れを防止することができる。 According to the present invention, it is possible to prevent thermal cracking while preventing expansion and contraction of the hollow layer due to an elevation difference.
複層ガラスの構成を示した要部の模式断面図Schematic cross-sectional view of the main part showing the structure of the double-glazed glass 第１実施形態に係る複層ガラスユニットの斜視図The perspective view of the multilayer glass unit which concerns on 1st Embodiment. 第１実施形態の複層ガラスユニットの要部の模式断面図Schematic sectional view of the main part of the multilayer glass unit of the first embodiment 袋体の構成を説明した袋体の模式断面図Schematic sectional view of the bag body explaining the configuration of the bag body 袋体が膨張した複層ガラスユニットの正面図Front view of a multi-layer glass unit with an expanded bag 第１実施形態の複層ガラスユニットの第１変形例を示す正面図The front view which shows the 1st modification of the multilayer glass unit of 1st Embodiment. 第１実施形態の複層ガラスユニットの第２変形例を示す正面図The front view which shows the 2nd modification of the multilayer glass unit of 1st Embodiment. 第２実施形態の複層ガラスユニットを示す要部を拡大した模式断面図The schematic cross section which expanded the principal part which shows the multilayer glass unit of 2nd Embodiment. 袋体が膨張した図８の複層ガラスユニットの要部を拡大した模式断面図Schematic cross-sectional view enlarging the main part of the multilayer glass unit of FIG. 8 in which the bag body has expanded. 第１実施形態の窓建具の要部を拡大した模式断面図The schematic cross section which expanded the principal part of the window joinery of 1st Embodiment. 第２実施形態の窓建具の要部を拡大した模式断面図The schematic cross section which expanded the principal part of the window joinery of 2nd Embodiment 図１１に示したサッシ枠が２分割された要部の模式断面図FIG. 11 is a schematic cross-sectional view of the main part of the sash frame shown in FIG. 第３実施形態の複層ガラスユニットを示す要部を拡大した模式断面図The schematic cross section which expanded the principal part which shows the multilayer glass unit of 3rd Embodiment.
　以下、添付図面に従って本発明に係る複層ガラスユニット及び窓建具の好ましい実施形態を説明する。 Hereinafter, preferred embodiments of a multi-layer glass unit and a window fitting according to the present invention will be described with reference to the accompanying drawings.
　実施形態の複層ガラスユニットを説明する前に、まず、袋体を除いた単体の複層ガラスの構成について説明する。 Before describing the multilayer glass unit of the embodiment, first, the configuration of a single multilayer glass excluding the bag will be described.
　図１は、単体の複層ガラス１０の構成を示した要部の模式断面図である。 FIG. 1 is a schematic cross-sectional view of a main part showing the configuration of a single multilayer glass 10.
　複層ガラス１０は、矩形状（図２参照）に構成された２枚のガラス板１２、１２と枠状のスペーサ１４とを有する。２枚のガラス板１２、１２はスペーサ１４によって隔置され、２枚のガラス板１２、１２の間に中空層１６が形成される。スペーサ１４は、その両側面１４Ａがブチル系シーリング材等の一次シール材１８によって２枚のガラス板１２、１２に接着される。これによって、２枚のガラス板１２、１２で挟まれる中空層１６が封止される。また、２枚のガラス板１２、１２の間の端縁部の凹部１３に、シリコーン系シーリング材、ポリサルファイド系シーリング材、ポリウレタン系シーリング材又はブチル系シーリング材等の二次シール材２０が封着される。これによって、複層ガラス１０が構成される。 The multi-layer glass 10 has two glass plates 12 and 12 and a frame-like spacer 14 configured in a rectangular shape (see FIG. 2). The two glass plates 12 and 12 are separated by a spacer 14, and a hollow layer 16 is formed between the two glass plates 12 and 12. Both sides 14A of the spacer 14 are bonded to the two glass plates 12 and 12 by a primary sealing material 18 such as a butyl sealant. Thereby, the hollow layer 16 sandwiched between the two glass plates 12 and 12 is sealed. Further, a secondary sealing material 20 such as a silicone-based sealing material, a polysulfide-based sealing material, a polyurethane-based sealing material, or a butyl-based sealing material is sealed in the recess 13 at the edge between the two glass plates 12, 12. Is done. Thereby, the multilayer glass 10 is comprised.
　スペーサ１４は、中空のパイプ材によって構成され、スペーサ１４の中空部１４Ｂにはゼオライト等の乾燥材２２が充填される。また、スペーサ１４には、中空部１４Ｂと中空層１６とを連通する貫通孔１４Ｃが形成され、これによって、中空層１６の空気が乾燥材２２によって乾燥される。なお、空気に代えて断熱ガス（アルゴンガス又はクリプトンガラス等の不活性ガス）を中空層１６に封入してもよい。これにより、複層ガラス１０の断熱性が高められる。 The spacer 14 is formed of a hollow pipe material, and the hollow portion 14B of the spacer 14 is filled with a drying material 22 such as zeolite. Further, the spacer 14 is formed with a through hole 14 </ b> C that communicates the hollow portion 14 </ b> B and the hollow layer 16, whereby the air in the hollow layer 16 is dried by the desiccant 22. Insulating gas (inert gas such as argon gas or krypton glass) may be enclosed in the hollow layer 16 instead of air. Thereby, the heat insulation of the multilayer glass 10 is improved.
　中空層１６に対する断熱ガスの封入方法は、例えば、スペーサ１４のコーナー部に位置するコーナーキー（不図示）に中空層１６に貫通する貫通孔を形成し、この貫通孔から中空層１６にガス注入装置によって断熱ガスを注入する。断熱ガスの注入後、コーナーキーの貫通孔をキャップ（不図示）によって封止する。この後、２枚のガラス板１２、１２の間の端縁部の凹部１３に、前述の二次シール材２０を封着する。以上の作業によって断熱ガスを中空層１６に封入することができる。なお、スペーサ１４は、コーナーキーを有するものの他、ベンダー装置にて予め枠状に折り曲げ加工された（コーナーキーを使用しない）スペーサも含む。 The heat insulation gas is sealed in the hollow layer 16 by, for example, forming a through-hole penetrating the hollow layer 16 in a corner key (not shown) located at a corner portion of the spacer 14 and injecting gas into the hollow layer 16 from the through-hole. Insulating gas is injected by the device. After injecting the insulating gas, the through hole of the corner key is sealed with a cap (not shown). Thereafter, the above-described secondary sealing material 20 is sealed in the concave portion 13 at the edge between the two glass plates 12 and 12. The heat insulating gas can be sealed in the hollow layer 16 by the above operation. The spacer 14 includes a spacer that has been bent into a frame shape by a bender device in advance (not using a corner key) in addition to a corner key.
　複層ガラス１０のガラス板１２は、フロート法によって製造された所謂フロートガラスでもよく、型板ガラス、網入りガラス等の防火ガラス又は合わせガラスであってもよい。また、ガラス板１２の枚数は２枚に限定されるものではなく、少なくとも２枚のガラス板を備えた複層ガラスであればよい。例えば第１乃至第３ガラス板を備える複層ガラスは、第１ガラス板と第２ガラス板との間に第１スペーサが配置されて第１中空層が形成され、第２ガラス板と第３ガラス板との間に第２スペーサが配置されて第２中空層が形成される構成となる。 The glass plate 12 of the multilayer glass 10 may be a so-called float glass manufactured by a float process, or may be fireproof glass such as template glass or netted glass, or laminated glass. Moreover, the number of the glass plates 12 is not limited to two, and may be a multi-layer glass provided with at least two glass plates. For example, in a multi-layer glass including first to third glass plates, a first spacer is formed between a first glass plate and a second glass plate to form a first hollow layer, and a second glass plate and a third glass plate are provided. The second spacer is disposed between the glass plate and the second hollow layer.
　図２は、図１に示した複層ガラス１０に袋体３２が備えられた第１実施形態に係る複層ガラスユニット３０の斜視図である。 FIG. 2 is a perspective view of the multilayer glass unit 30 according to the first embodiment in which the bag body 32 is provided on the multilayer glass 10 shown in FIG.
　図２の如く、複層ガラスユニット３０の袋体３２は、複層ガラス１０の外部に配置されるとともに中空層１６（図１参照）と連通されている。この袋体３２は、膨縮可能な材料で筒状に構成されており、複層ガラス１０の４辺の周縁部１１に沿って配置される。ここで、複層ガラス１０の周縁部１１とは、図１の如く、ガラス板１２の端面部１２Ａ又は端面部１２Ａを含むその周辺の面部１２Ｂを指す。ここでは、それらの面部を総称して周縁部１１と称する。袋体３２は、複層ガラス１０の４辺の周縁部１１に近接して配置されている。なお、袋体３２は、４辺の周縁部１１に沿って配置することが熱割れ防止の観点から好ましいが、必ずしも４辺に沿って配置する必要はなく、３辺以下であってもよい。 As shown in FIG. 2, the bag body 32 of the multilayer glass unit 30 is disposed outside the multilayer glass 10 and communicated with the hollow layer 16 (see FIG. 1). The bag body 32 is formed in a cylindrical shape from a material that can be expanded and contracted, and is disposed along the peripheral edge portions 11 on the four sides of the multilayer glass 10. Here, the peripheral edge portion 11 of the multilayer glass 10 refers to the end surface portion 12A of the glass plate 12 or the peripheral surface portion 12B including the end surface portion 12A as shown in FIG. Here, these surface portions are collectively referred to as the peripheral portion 11. The bag body 32 is disposed in the vicinity of the four peripheral edges 11 of the multilayer glass 10. In addition, although it is preferable to arrange | position the bag body 32 along the peripheral part 11 of 4 sides from a viewpoint of thermal crack prevention, it does not necessarily need to arrange | position along 4 sides and may be 3 or less sides.
　袋体３２と中空層１６との連通構造としては、図３に示す複層ガラスユニット３０の模式断面図の如く、二次シール材２０とスペーサ１４とに通気管３４を貫通配置し、この通気管３４を介して袋体３２を中空層１６に連通させた構造が採用されている。通気管３４は、図２に示すように、複層ガラス１０の右上コーナー部１０Ａの近傍に設けられているが、この位置に限定されるものではない。例えば、通気管３４をコーナーキーに設けてもよい。また、袋体３２と中空層１６との連通構造の他の例として、ガラス板１２の表面に貫通孔（不図示）を形成し、この貫通孔を介して袋体３２を中空層１６に連通させる連通構造を適用することもできる。 As a communication structure between the bag body 32 and the hollow layer 16, as shown in the schematic cross-sectional view of the multilayer glass unit 30 shown in FIG. 3, a vent pipe 34 is disposed through the secondary sealing material 20 and the spacer 14. A structure in which the bag body 32 is communicated with the hollow layer 16 through the trachea 34 is employed. As shown in FIG. 2, the vent pipe 34 is provided in the vicinity of the upper right corner portion 10 </ b> A of the multilayer glass 10, but is not limited to this position. For example, the vent pipe 34 may be provided at the corner key. As another example of the communication structure between the bag body 32 and the hollow layer 16, a through hole (not shown) is formed on the surface of the glass plate 12, and the bag body 32 communicates with the hollow layer 16 through the through hole. It is also possible to apply a communication structure.
　また、図２では１つの袋体３２に対して１つの通気管３４を示しているがこれに限定されない。１つの袋体３２に対して２つ以上の通気管３４を設けてもよい。複数の通気管３４を設けると、中空層１６内の空気又は断熱ガスの対流が促進されるので、早く熱を周縁部１１に伝えることができる。  In FIG. 2, one vent pipe 34 is shown for one bag 32, but the present invention is not limited to this. Two or more vent pipes 34 may be provided for one bag body 32. When a plurality of vent pipes 34 are provided, convection of air or heat insulating gas in the hollow layer 16 is promoted, so that heat can be quickly transferred to the peripheral portion 11.
　図４は、袋体３２の構成を説明した袋体３２の模式断面図である。 FIG. 4 is a schematic cross-sectional view of the bag body 32 illustrating the configuration of the bag body 32.
　図４の如く、袋体３２は、少なくとも１つ以上の樹脂層３６と少なくとも１つ以上のガス非透過性層３８とを積層したフィルムによって構成される。樹脂層３６とガス非透過性層３８は交互に積層してもよい。樹脂層３６は袋体３２の内側の層であり、樹脂層３６としてポリ塩化ビニリデン又はポリビニルフッ素フィルムを例示することができる。また、ガス非透過性層３８は袋体３２の外側の層であり、ガス非透過性層３８は銀、アルミニウム又はその合金若しくは混合物を含む金属層、酸化ケイ素、窒化ケイ素又はその混合物を含むセラミック層であり、アルミニウム積層体、金属化フィルム、酸化ケイ素被覆フィルム又は酸化アルミニウムフィルムを例示することができる。この中でも、アルミニウム積層体は熱伝導率が高いので好ましい。後述するように、袋体３２は、複層ガラス１０の４辺の周縁部１１を加温する機能も有する。よって、袋体３２の材料としては、熱伝導率の高いアルミニウムを使用することが好ましい。なお、袋体３２の外側に樹脂層３６を配置し、袋体３２の内側にガス非透過性層３８を配置してもよい。また、ガス非透過性層３８とは、ガスを全く透過しない性質のものではなく、ガスを透過し難い性質のものを含むものである。 As shown in FIG. 4, the bag body 32 is formed of a film in which at least one resin layer 36 and at least one gas impermeable layer 38 are laminated. The resin layers 36 and the gas impermeable layers 38 may be alternately stacked. The resin layer 36 is an inner layer of the bag 32, and examples of the resin layer 36 include polyvinylidene chloride or a polyvinyl fluorine film. The gas non-permeable layer 38 is an outer layer of the bag 32, and the gas non-permeable layer 38 is a metal layer containing silver, aluminum or an alloy or mixture thereof, ceramic containing silicon oxide, silicon nitride or a mixture thereof. Examples of the layer include an aluminum laminate, a metallized film, a silicon oxide-coated film, and an aluminum oxide film. Among these, an aluminum laminate is preferable because of its high thermal conductivity. As will be described later, the bag body 32 also has a function of heating the peripheral portions 11 on the four sides of the multilayer glass 10. Therefore, it is preferable to use aluminum having high thermal conductivity as the material of the bag body 32. The resin layer 36 may be disposed outside the bag body 32, and the gas impermeable layer 38 may be disposed inside the bag body 32. Further, the gas non-permeable layer 38 does not have a property of not transmitting gas at all, but includes a property of not easily transmitting gas.
　袋体３２の膨張時の長さ方向に対して垂直な断面形状は、略円形でもよいし、略四角形でもよく、これらに限定されるものではない。また、通気管３４は肉厚を厚くすることでガス透過性を抑えることが可能であるが、ガス非透過性層を備えることが望ましい。  The cross-sectional shape perpendicular to the length direction when the bag body 32 is inflated may be a substantially circular shape or a substantially rectangular shape, and is not limited thereto. Moreover, although the ventilation pipe 34 can suppress gas permeability by making it thick, it is desirable to provide a gas non-permeable layer.
　複層ガラスユニット３０は、一例として低地にて製造されて高地にて使用されるものである。この場合、低地にて製造された複層ガラスユニット３０の袋体３２には、空気又は断熱ガスが充填されておらず、袋体３２は低地において収縮した状態（図３参照）で中空層１６に連通されている。 The multi-layer glass unit 30 is manufactured in a lowland and used in a highland as an example. In this case, the bag body 32 of the multilayer glass unit 30 manufactured in the lowland is not filled with air or heat insulating gas, and the bag body 32 is in a contracted state in the lowland (see FIG. 3). It is communicated to.
　このように構成された複層ガラスユニット３０によれば、複層ガラスユニット３０を低地から高地に搬送していくと、複層ガラス１０の中空層１６の空気又は断熱ガスが標高差に起因して膨張していき、膨張した中空層１６の空気又は断熱ガスは中空層１６から通気管３４を介して袋体３２に流入する。これにより、この実施形態の複層ガラスユニット３０によれば、低地から高地に複層ガラスユニット３０を搬送させた際に生じる中空層１６の膨張を防止することができる。 According to the double glazing unit 30 configured in this way, when the double glazing unit 30 is transported from a low altitude to a high altitude, the air or the heat insulating gas in the hollow layer 16 of the double glazing 10 is caused by an altitude difference. The air or heat insulating gas in the expanded hollow layer 16 flows from the hollow layer 16 into the bag body 32 through the vent pipe 34. Thereby, according to the multilayer glass unit 30 of this embodiment, the expansion | swelling of the hollow layer 16 produced when the multilayer glass unit 30 is conveyed from a lowland to a highland can be prevented.
　また、運送中に高地から低地に一時的に戻る場合には、一旦袋体３２に入った空気又は断熱ガスが中空層１６に戻ることで、中空層１６の内圧を一定に保つことができる。  Further, when temporarily returning from the highland to the lowland during transportation, the internal pressure of the hollow layer 16 can be kept constant by the air or the heat insulating gas once entering the bag body 32 returning to the hollow layer 16.
　図５に示す複層ガラスユニット３０の正面図の如く、低地から高地に搬送された複層ガラスユニット３０は、袋体３２が膨張し、複層ガラス１０の周縁部１１に接触する。袋体３２は、その一部が複層ガラス１０の周縁部１１に予め接着剤にて接着されているので、袋体３２が膨張した場合でも、袋体３２は複層ガラス１０の４辺の周縁部１１に接触した状態で保持される。なお、袋体３２は、必ずしも複層ガラス１０の周縁部１１に接触されている必要はない。複層ガラス１０に対する袋体３２の位置は、複層ガラス１０の周縁部１１に近接して袋体３２の温度を周縁部１１に対流又は放射により伝えることができる位置であればよい。  As shown in the front view of the multilayer glass unit 30 shown in FIG. 5, the multilayer glass unit 30 conveyed from the low ground to the high ground has the bag 32 inflated and contacts the peripheral edge 11 of the multilayer glass 10. Since the bag body 32 is partly bonded to the peripheral edge portion 11 of the multilayer glass 10 with an adhesive in advance, even when the bag body 32 expands, the bag body 32 has four sides of the multilayer glass 10. It is held in contact with the peripheral edge 11. In addition, the bag body 32 does not necessarily need to be in contact with the peripheral edge portion 11 of the multilayer glass 10. The position of the bag body 32 with respect to the multilayer glass 10 may be a position close to the peripheral edge portion 11 of the multilayer glass 10 and capable of transmitting the temperature of the bag body 32 to the peripheral edge portion 11 by convection or radiation.
　袋体３２を複層ガラス１０に接着させる場合における、複層ガラス１０に対する袋体３２の接着手段は、接着剤に限定されるものではなく、双方を接着可能な両面接着テープ、又はマジックテープ（クラレ(株)商標名）を用いてもよく、また、他の保持手段を使用してもよい。更に、袋体３２を複層ガラス１０の４辺の周縁部１１に接着することは必須ではなく、後述するように、窓建具を構成するサッシ枠又は框に袋体３２を保持させて、袋体３２を周縁部１１に接触させる構造も適用することができる。 The means for bonding the bag body 32 to the multilayer glass 10 in the case of bonding the bag body 32 to the multilayer glass 10 is not limited to an adhesive, but a double-sided adhesive tape or a magic tape ( Kuraray Co., Ltd. trade name) may be used, and other holding means may be used. Furthermore, it is not essential to adhere the bag body 32 to the peripheral edge portions 11 on the four sides of the multilayer glass 10. As will be described later, the bag body 32 is held by a sash frame or a ridge constituting the window joinery, A structure in which the body 32 is brought into contact with the peripheral edge portion 11 can also be applied.
　一方、複層ガラスユニット３０は、袋体３２によって複層ガラス１０の４辺の周縁部１１を加温する機能を備える。 On the other hand, the multilayer glass unit 30 has a function of heating the peripheral portions 11 on the four sides of the multilayer glass 10 by the bag body 32.
　具体的に説明する。複層ガラス１０が日射によって温められると、複層ガラス１０の中央部の中空層温度は急激に上昇するが、複層ガラス１０の４辺の周縁部１１の温度は緩やかに上昇する。この原因は、複層ガラス１０の４辺の周縁部１１は、通常、サッシ枠又は框に嵌め込まれており日射を受けないからである。このため、複層ガラス１０では、高温部である中央部の熱膨張を周縁部１１が拘束する状態になるので、周知の通り、ガラス周縁部に引張り応力が働き、複層ガラス１０のガラス板１２に熱割れが生じる場合がある。 Specific explanation. When the multilayer glass 10 is heated by solar radiation, the temperature of the hollow layer at the center of the multilayer glass 10 rises rapidly, but the temperature of the peripheral edge 11 on the four sides of the multilayer glass 10 rises gradually. This is because the peripheral edges 11 on the four sides of the multi-layer glass 10 are usually fitted in a sash frame or ridge and are not exposed to solar radiation. For this reason, in the multilayer glass 10, since the peripheral part 11 restrains the thermal expansion of the center part which is a high temperature part, as is well known, a tensile stress acts on the glass peripheral part, and the glass plate of the multilayer glass 10 There is a case where a thermal crack is generated in 12.
　そこで、複層ガラスユニット３０によれば、日射によって温められて膨張した中空層１６の空気又は断熱ガスは、中空層１６から通気管３４を介して袋体３２に流入し、袋体３２を加温する。又は、袋体３２に流入した空気又は断熱ガスの対流、及び袋体３２の熱伝導によって、袋体３２の空気又は断熱ガスが、中空層１６の空気又は断熱ガスの熱によって温められる。そうすると、袋体３２が接触している４辺の周縁部１１が袋体３２によって加温され、４辺の周縁部１１の温度が複層ガラス１０の中央部の温度に近づけられる。これにより、複層ガラスユニット３０によれば、ガラス板１２の熱割れを防止することができる。なお、３辺以下の周縁部１１に袋体３２を接触させた態様であっても、熱割れを防止する効果がある。 Therefore, according to the double-glazed unit 30, the air or heat insulating gas in the hollow layer 16 that has been heated and expanded by solar radiation flows into the bag body 32 from the hollow layer 16 through the vent pipe 34, and the bag body 32 is added. Warm up. Or the air or heat insulation gas of the bag body 32 is warmed by the heat of the air or heat insulation gas of the hollow layer 16 by the convection of the air or heat insulation gas which flowed into the bag body 32, and the heat conduction of the bag body 32. When it does so, the peripheral part 11 of 4 sides which the bag body 32 is contacting is heated by the bag body 32, and the temperature of the peripheral part 11 of 4 sides is brought close to the temperature of the center part of the multilayer glass 10. FIG. Thereby, according to the multilayer glass unit 30, the thermal crack of the glass plate 12 can be prevented. In addition, even if it is the aspect which made the bag body 32 contact the peripheral part 11 below 3 sides, there exists an effect which prevents a thermal crack.
　以上の如く、複層ガラスユニット３０によれば、標高差に起因する中空層１６の膨張を防止しつつガラス板１２の熱割れを防止することができる。 As described above, according to the multilayer glass unit 30, it is possible to prevent thermal cracking of the glass plate 12 while preventing the hollow layer 16 from expanding due to an elevation difference.
　また、複層ガラスユニット３０は、二次シール材２０とスペーサ１４とに貫通配置された通気管３４を有し、袋体３２は、通気管３４を介して中空層１６に連通されている。これにより、中空層１６と袋体３２とを確実に連通させることができる。 Further, the multilayer glass unit 30 has a vent pipe 34 penetratingly disposed in the secondary sealing material 20 and the spacer 14, and the bag body 32 communicates with the hollow layer 16 through the vent pipe 34. Thereby, the hollow layer 16 and the bag body 32 can be reliably communicated.
　また、複層ガラスユニット３０の袋体３２は、少なくとも１つの樹脂層３６と少なくとも１つのガス非透過性層３８とを積層したフィルムによって構成されている。 Further, the bag body 32 of the multilayer glass unit 30 is constituted by a film in which at least one resin layer 36 and at least one gas impermeable layer 38 are laminated.
　このような構成により、袋体３２は、樹脂層３６によって柔軟性及び弾力性を有しているので、複層ガラス１０の周縁部１１に袋体３２が接触していても、袋体３２によるガラス板１２の損傷を防止することができる。また、袋体３２は、ガス非透過性層３８を有しているので、袋体３２からのガス漏れを防止することができる。また、袋体３２は、複層ガラス１０の周縁部１１とサッシ枠との間の空間形状に合わせた形状で膨らむことができる。  With such a configuration, the bag body 32 has flexibility and elasticity due to the resin layer 36, so even if the bag body 32 is in contact with the peripheral edge portion 11 of the multilayer glass 10, Damage to the glass plate 12 can be prevented. Further, since the bag body 32 has the gas impermeable layer 38, gas leakage from the bag body 32 can be prevented. Moreover, the bag body 32 can swell in a shape that matches the space shape between the peripheral edge portion 11 of the multilayer glass 10 and the sash frame.
　なお、第１実施形態の複層ガラスユニット３０は、図５の如く、１本の通気管３４を介して中空層１６と袋体３２を連通させたが、これに限定されるものではない。 In addition, although the multilayer glass unit 30 of 1st Embodiment connected the hollow layer 16 and the bag body 32 via the one ventilation pipe | tube 34 like FIG. 5, it is not limited to this.
　複数の通気管３４を使用すれば、複層ガラス１０を透過する音エネルギーを通気管３４の孔に導くことで、音エネルギーを袋体３２の中で減衰させることができるので、遮音性能を向上させることができる。 If a plurality of vent pipes 34 are used, the sound energy transmitted through the multi-layer glass 10 can be guided to the holes of the vent pipe 34 so that the sound energy can be attenuated in the bag 32, thereby improving the sound insulation performance. Can be made.
　図６は、第１実施形態の複層ガラスユニット３０の第１変形例を示す正面図である。 FIG. 6 is a front view showing a first modification of the multilayer glass unit 30 of the first embodiment.
　図６の如く、複層ガラス１０の４辺毎に通気管３４Ａを配置して、これらの通気管３４Ａを介して袋体３２を中空層１６と連通させることができる。通気管３４Ａの本数を増やすことにより、中空層１６で膨張した空気又は断熱ガスを短時間で袋体３２に流入させることができる。 As shown in FIG. 6, the ventilation pipe 34 </ b> A is arranged on every four sides of the multilayer glass 10, and the bag body 32 can be communicated with the hollow layer 16 through the ventilation pipe 34 </ b> A. By increasing the number of the vent pipes 34A, the air or the heat insulating gas expanded in the hollow layer 16 can flow into the bag body 32 in a short time.
　また、第１実施形態の複層ガラスユニット３０は、１本の袋体３２を折り曲げることにより、袋体３２を複層ガラス１０の４辺の周縁部１１に沿って配置したが、これに限定されるものではない。また、袋体３２は製造の容易性とメンテナンス性の向上のため複数個に分けてもよい。その場合には袋体３２には少なくとも１本の通気管３４を連通させることが好ましい。  Moreover, although the multilayer glass unit 30 of 1st Embodiment has arrange | positioned the bag body 32 along the peripheral part 11 of 4 sides of the multilayer glass 10 by bending the one bag body 32, it is limited to this. Is not to be done. Further, the bag body 32 may be divided into a plurality of pieces for the sake of ease of manufacture and improvement of maintenance. In that case, it is preferable to connect at least one vent pipe 34 to the bag body 32.
　図７は、第１実施形態の複層ガラスユニット３０の第２変形例を示す正面図である。 FIG. 7 is a front view showing a second modification of the multilayer glass unit 30 of the first embodiment.
　図７の如く、複層ガラス１０の４辺の周縁部１１毎に、１辺の長さに相当する短尺の袋体３２Ａを配置し、これらの袋体３２Ａを、それぞれ通気管３４Ａを介して中空層１６に連通させても、第１変形例と同様の効果を得ることができる。また、袋体３２Ａに対する通気管３４Ａの連結位置は、袋体３２Ａの長手軸方向の中央部が好ましい。これにより、中空層１６から流入した空気又は断熱ガスが袋体３２Ａに円滑に流入する。 As shown in FIG. 7, a short bag body 32A corresponding to the length of one side is arranged for each of the four peripheral edge portions 11 of the multilayer glass 10, and these bag bodies 32A are respectively connected through the vent pipe 34A. Even if it communicates with the hollow layer 16, the same effect as the first modification can be obtained. Further, the connection position of the vent pipe 34A to the bag body 32A is preferably the central portion in the longitudinal axis direction of the bag body 32A. Thereby, the air or heat insulation gas which flowed in from the hollow layer 16 flows smoothly into the bag body 32A.
　また、複層ガラスユニット３０は、上記効果の他、以下の効果を有する。 Moreover, the multilayer glass unit 30 has the following effects in addition to the above effects.
　複層ガラスユニット３０は、中空層１６の内圧と大気圧との差の変化が少ないので、標高差又は気温の季節変動により空気又は断熱ガスの膨張収縮に起因する反射映像の歪を防止することができる。また、中空層１６の内圧と大気圧との差の変化がないことから複層ガラス１０の厚さが変化しないので、サッシ枠又は框への設置が容易になる。また、複層ガラスユニット３０は、低地から高地まで、内圧調整をすることなく搬送することができる。また、複層ガラスユニット３０は、現場の標高に応じて容易に袋体３２のサイズを変更することができるので、適用範囲が標高による制限を受けないという利点がある。 Since the change in the difference between the internal pressure of the hollow layer 16 and the atmospheric pressure is small, the double glazing unit 30 prevents the distortion of the reflected image due to the expansion or contraction of the air or the insulating gas due to the altitude difference or the seasonal fluctuation of the temperature. Can do. Further, since there is no change in the difference between the internal pressure of the hollow layer 16 and the atmospheric pressure, the thickness of the double-glazed glass 10 does not change, so that the installation on the sash frame or the eave becomes easy. In addition, the multilayer glass unit 30 can be transported from the lowland to the highland without adjusting the internal pressure. Moreover, since the multilayer glass unit 30 can change the size of the bag body 32 easily according to the altitude of the field, there exists an advantage that an application range does not receive the restriction | limiting by an altitude.
　なお、複層ガラスユニットに適用可能な複層ガラスの変形例として、３枚又は４枚以上のガラス板がそれぞれ中空層を介して隔置された多層ガラス構成体であっても適用することができる。この場合、中空層の数に対応した数の袋体を揃えて、各々の中空層に袋体を連通してもよく、複数の中空層を連通させて少なくとも一つの中空層に一つの袋体を連通してもよい。 In addition, as a modified example of the multilayer glass applicable to the multilayer glass unit, it can be applied even to a multilayer glass structure in which three or four or more glass plates are separated via a hollow layer. it can. In this case, the number of bag bodies corresponding to the number of hollow layers may be aligned, and the bag bodies may be communicated with each hollow layer, or a plurality of hollow layers may be communicated to form one bag body for at least one hollow layer. May be communicated.
　図８は、第２実施形態の複層ガラスユニット４０を示す要部を拡大した模式断面図である。 FIG. 8 is a schematic cross-sectional view enlarging a main part showing the multilayer glass unit 40 of the second embodiment.
　図８の複層ガラスユニット４０を説明するに当たり、図３の複層ガラスユニット３０と同一若しくは類似の部材については同一の符号を付し、その説明は省略する。 In the description of the double glazing unit 40 in FIG. 8, the same or similar members as those in the double glazing unit 30 in FIG.
　図８に示す複層ガラスユニット４０は、その袋体３２が、複層ガラス１０の周縁部１１に位置する２枚のガラス板１２、１２の対向面１２Ｃ、１２Ｃと二次シール材２０の外表面２０Ａとに包囲される断面凹状の溝部４２に収納されている。この溝部４２は、複層ガラス１０の４辺の周縁部１１に沿って配置されている。また、溝部４２の開放部４２Ａが断面Ｕ字形状のカバー材４４によって覆われている。 The double-glazed unit 40 shown in FIG. 8 has a bag body 32 that is opposite to the opposing surfaces 12C and 12C of the two glass plates 12 and 12 positioned on the peripheral edge 11 of the double-glazed glass 10 and the secondary sealing material 20. It is housed in a groove 42 having a concave cross section surrounded by the surface 20A. The groove 42 is disposed along the peripheral edge 11 on the four sides of the multilayer glass 10. Further, the open portion 42A of the groove portion 42 is covered with a cover material 44 having a U-shaped cross section.
　このように構成された複層ガラスユニット４０によれば、低地で製造された複層ガラスユニット４０を高地に搬送していくと、複層ガラス１０の中空層１６の空気又は断熱ガスが標高差に起因して膨張していき、膨張した中空層１６の空気又は断熱ガスは中空層１６から通気管３４を介して袋体３２に流入する。図９は、袋体３２が膨張した複層ガラスユニット４０の要部を拡大した模式断面図である。 According to the double glazing unit 40 configured in this way, when the double glazing unit 40 manufactured in the lowland is transported to a high altitude, the air or the heat insulating gas of the hollow layer 16 of the double glazing 10 has an elevation difference. The air or heat insulating gas in the expanded hollow layer 16 flows into the bag body 32 from the hollow layer 16 through the vent pipe 34. FIG. 9 is an enlarged schematic cross-sectional view of a main part of the multilayer glass unit 40 in which the bag body 32 is expanded.
　これにより、第２実施形態の複層ガラスユニット４０によれば、低地から高地に複層ガラスユニット４０を搬送させた際に生じる中空層１６の膨張を防止することができる。 Thereby, according to the multilayer glass unit 40 of 2nd Embodiment, the expansion | swelling of the hollow layer 16 produced when the multilayer glass unit 40 is conveyed from a lowland to a highland can be prevented.
　また、第２実施形態の複層ガラスユニット４０によれば、日射によって温められて膨張した中空層１６の空気又は断熱ガスは、中空層１６から通気管３４を介して袋体３２に流入し、袋体３２を加温する。又は、袋体３２に流入した空気又は断熱ガスの対流、及び袋体３２の熱伝導によって、袋体３２の空気又は断熱ガスが、中空層１６の空気又は断熱ガスの熱によって温められる。そうすると、袋体３２が接触している４辺の周縁部１１が袋体３２によって加温され、４辺の周縁部１１の温度が複層ガラス１０の中央部の温度に近づけられる。これにより、複層ガラスユニット４０によれば、ガラス板１２の熱割れを防止することができる。 Further, according to the double-glazed unit 40 of the second embodiment, the air or heat insulating gas of the hollow layer 16 that has been heated and expanded by solar radiation flows into the bag body 32 from the hollow layer 16 through the vent pipe 34, The bag body 32 is heated. Or the air or heat insulation gas of the bag body 32 is warmed by the heat of the air or heat insulation gas of the hollow layer 16 by the convection of the air or heat insulation gas which flowed into the bag body 32, and the heat conduction of the bag body 32. When it does so, the peripheral part 11 of 4 sides which the bag body 32 is contacting is heated by the bag body 32, and the temperature of the peripheral part 11 of 4 sides is brought close to the temperature of the center part of the multilayer glass 10. FIG. Thereby, according to the multilayer glass unit 40, the thermal crack of the glass plate 12 can be prevented.
　更に、第２実施形態の複層ガラスユニット４０によれば、複層ガラス１０の４辺の周縁部１１に沿って配置された溝部４２に袋体３２が収納されているので、複層ガラス１０の４辺の周縁部１１を袋体３２によって効率よく加温することができる。また、溝部４２の開放部４２Ａがカバー材４４によって覆われているので、袋体３２によって温められた溝部４２の空気の温度低下を抑制することができるとともに、袋体３２を複層ガラス１０の外部から保護することができる。更に、複層ガラス１０の面内で袋体３２が収納されるので、サッシ枠又は框への複層ガラスユニット４０の設置が容易になる。 Furthermore, according to the multilayer glass unit 40 of 2nd Embodiment, since the bag body 32 is accommodated in the groove part 42 arrange | positioned along the peripheral part 11 of 4 sides of the multilayer glass 10, the multilayer glass 10 The four peripheral edges 11 can be efficiently heated by the bag 32. Moreover, since the open part 42A of the groove part 42 is covered with the cover material 44, while being able to suppress the temperature fall of the air of the groove part 42 warmed by the bag body 32, the bag body 32 of the multilayer glass 10 is made. Can be protected from the outside. Furthermore, since the bag body 32 is accommodated in the plane of the multilayer glass 10, the multilayer glass unit 40 can be easily installed on the sash frame or the basket.
　次に、第１実施形態の複層ガラスユニット３０がサッシ枠に取り付けられてなる窓建具の実施形態について、以下の２例を挙げて説明する。 Next, an embodiment of a window fitting in which the multi-layer glass unit 30 of the first embodiment is attached to a sash frame will be described with reference to the following two examples.
　図１０は、第１実施形態の窓建具５０の要部の模式断面図である。また、図１０では、膨張した袋体３２を収納する窓建具５０が示されている。 FIG. 10 is a schematic cross-sectional view of the main part of the window fitting 50 of the first embodiment. Moreover, in FIG. 10, the window fitting 50 which accommodates the expanded bag body 32 is shown.
　図１０に示す窓建具５０は、複層ガラスユニット３０と、複層ガラスユニット３０の４辺の周縁部１１に沿って取り付けられて空隙部（ホロー空間とも言う。）５２を有するサッシ枠（フレームとも言う。）５４と、を備えて構成される。そして、窓建具５０は、サッシ枠５４の空隙部５２に袋体３２が収納されて構成されている。 A window joinery 50 shown in FIG. 10 is a sash frame (frame) attached to the multilayer glass unit 30 and the peripheral edge 11 on the four sides of the multilayer glass unit 30 and having a gap (also referred to as a hollow space) 52. 54). The window fitting 50 is configured such that the bag body 32 is accommodated in the gap 52 of the sash frame 54.
　この窓建具５０によれば、サッシ枠５４に予め形成されている空隙部５２を、袋体３２を収納する収納部として利用したので、袋体３２を収納する専用の収納部をサッシ枠５４に形成することなく、既存のサッシ枠５４を使用することができる。また、この窓建具５０によれば、中空層１６の熱が伝達されている袋体３２によってサッシ枠５４を温めることもできる。また、袋体３２は軟質なので、寸法や形状が異なる空隙部５２にも、その形状を変えて容易に収納することができる。 According to this window fitting 50, since the gap portion 52 formed in advance in the sash frame 54 is used as a storage portion for storing the bag body 32, a dedicated storage portion for storing the bag body 32 is provided in the sash frame 54. The existing sash frame 54 can be used without being formed. Moreover, according to this window fitting 50, the sash frame 54 can also be warmed by the bag body 32 to which the heat of the hollow layer 16 is transmitted. Further, since the bag body 32 is soft, it can be easily accommodated in the gaps 52 having different dimensions and shapes by changing the shape.
　図１１は、第２実施形態の窓建具６０の要部の模式断面図である。また、図１２は、窓建具６０を構成するサッシ枠６２が２分割された状態の要部の模式断面図である。 FIG. 11 is a schematic cross-sectional view of the main part of the window fitting 60 of the second embodiment. FIG. 12 is a schematic cross-sectional view of the main part in a state where the sash frame 62 constituting the window joinery 60 is divided into two parts.
　図１１及び図１２に示す窓建具６０は、そのサッシ枠６２が、互いに分離可能な室内側サッシ枠６４と室外側サッシ枠６６とから構成されている。サッシ枠６２の空隙部６８は、室内側サッシ枠６４と室外側サッシ枠６６とを組み付けることにより、室内側サッシ枠６４と室外側サッシ枠６６との間に形成されている。 11 and 12 has a sash frame 62 composed of an indoor sash frame 64 and an outdoor sash frame 66 that are separable from each other. The gap 68 of the sash frame 62 is formed between the indoor sash frame 64 and the outdoor sash frame 66 by assembling the indoor sash frame 64 and the outdoor sash frame 66.
　この窓建具６０によれば、室内側サッシ枠６４と室外側サッシ枠６６を組み付けることにより、室内側サッシ枠６４と室外側サッシ枠６６との間に形成される空隙部６８に袋体３２を収納することができる。また、複層ガラスユニット３０をメンテナンスする際にサッシ枠６２から取り外す場合には、室内側サッシ枠６４と室外側サッシ枠６６とを分離する。これにより、複層ガラスユニット３０をサッシ枠６２から容易に取り外すことができる。 According to this window fitting 60, the bag body 32 is placed in the space 68 formed between the indoor sash frame 64 and the outdoor sash frame 66 by assembling the indoor sash frame 64 and the outdoor sash frame 66. Can be stored. Moreover, when removing from the sash frame 62 when maintaining the multilayer glass unit 30, the indoor sash frame 64 and the outdoor sash frame 66 are separated. Thereby, the multilayer glass unit 30 can be easily removed from the sash frame 62.
　また、サッシ枠６２は室内側サッシ枠６４と室外側サッシ枠６６とからなる２分割構造なので、室内外で材質、色等の意匠を変更することができる。なお、室内側サッシ枠６４と室外側サッシ枠６６との接続構造は、ビス等の連結具を使用して接続してもよく、互いに嵌合部６４Ａ、６６Ａを形成し、嵌合部６４Ａ、６６Ａ同士を嵌合させて接続してもよい。 Further, since the sash frame 62 has a two-part structure composed of an indoor sash frame 64 and an outdoor sash frame 66, the design of materials, colors, etc. can be changed indoors and outdoors. In addition, the connection structure of the indoor sash frame 64 and the outdoor sash frame 66 may be connected using a coupling tool such as a screw, and the fitting portions 64A and 66A are formed to form the fitting portions 64A, 66A may be fitted and connected.
　以上、本発明の実施形態を図面により詳述してきたが、本発明は前述した実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲での種々の設計変更等が可能である。 As mentioned above, although embodiment of this invention was explained in full detail with drawing, this invention is not limited to embodiment mentioned above, The various design change etc. in the range which does not deviate from the summary of this invention are possible. .
　例えば、高地にて製造された複層ガラスユニットを低地にて設置する場合には、袋体に予め空気又は断熱ガスを封入しておくことが好ましい。高地にて製造された複層ガラスが低地に搬送されてくると、中空層が収縮するので、この場合には、袋体内の空気又は断熱ガスが中空層に流入する。これにより、標高差に起因する中空層の収縮を防止することができる。 For example, when a multi-layer glass unit manufactured in a high altitude is installed in a low altitude, it is preferable to enclose air or heat insulating gas in the bag body in advance. Since the hollow layer contracts when the multi-layer glass produced in the highland is conveyed to the lowland, air or heat insulating gas in the bag flows into the hollow layer in this case. Thereby, shrinkage | contraction of the hollow layer resulting from an altitude difference can be prevented.
　図１３は、第３実施形態の複層ガラスユニット７０を示す要部を拡大した模式断面図である。 FIG. 13 is a schematic cross-sectional view enlarging a main part showing the multilayer glass unit 70 of the third embodiment.
　図１３の複層ガラスユニット７０を説明するに当たり、図３の複層ガラスユニット３０と同一若しくは類似の部材については同一の符号を付し、その説明は省略する。 In the description of the double-glazed unit 70 in FIG. 13, the same or similar members as those in the double-glazed unit 30 in FIG.
　複層ガラスユニット７０によれば、スペーサ１４と二次シール材２０を貫通して、中空層１６と外部とを連通するバルブ（第１接続管）７２を有している。バルブ７２を設けることにより、複層ガラス１０に対するチューブ状の通気管３４Ａの着脱が可能になる。また、袋体３２と通気管３４Ａの接続にも接続部材（第２接続管）７４を用いることで、通気管３４Ａに対する袋体３２の着脱が可能になる。このような構成により、万一、袋体３２又は通気管３４Ａが損傷又は劣化した場合には容易に交換が可能になる。複層ガラスユニット７０においても、図８に示した凹状の溝部４２に袋体３２を収納することが好ましい。 The multilayer glass unit 70 has a valve (first connecting pipe) 72 that penetrates the spacer 14 and the secondary seal material 20 and communicates the hollow layer 16 with the outside. By providing the valve 72, the tubular vent tube 34A can be attached to and detached from the multilayer glass 10. Further, the connection member (second connection pipe) 74 is also used to connect the bag body 32 and the vent pipe 34A, so that the bag body 32 can be attached to and detached from the vent pipe 34A. With such a configuration, if the bag body 32 or the vent pipe 34A is damaged or deteriorated, it can be easily replaced. Also in the multilayer glass unit 70, it is preferable to store the bag body 32 in the concave groove portion 42 shown in FIG.
　なお、２０１７年３月１０日に出願された日本特許出願２０１７－０４６５６９号の明細書、特許請求の範囲、図面および要約書の全内容をここに引用し、本発明の開示として取り入れるものである。 The entire contents of the specification, claims, drawings and abstract of Japanese Patent Application No. 2017-046569 filed on Mar. 10, 2017 are incorporated herein by reference. .
　１０…複層ガラス、１１…周縁部、１２…ガラス板、１３…凹部、１４…スペーサ、１６…中空層、１８…一次シール材、２０…二次シール材、２２…乾燥材、３０…複層ガラスユニット、３２…袋体、３４、３４Ａ…通気管、３６…樹脂層、３８…ガス非透過性層、４０…複層ガラスユニット、４２…溝部、４４…カバー材、５０…窓建具、５２…空隙部、５４…サッシ枠、６０…窓建具、６２…サッシ枠、６４…室内側サッシ枠、６６…室外側サッシ枠、６８…空隙部、７０…複層ガラスユニット、７２…バルブ、７４…接続部材 DESCRIPTION OF SYMBOLS 10 ... Multi-layer glass, 11 ... Peripheral part, 12 ... Glass plate, 13 ... Recessed part, 14 ... Spacer, 16 ... Hollow layer, 18 ... Primary sealant, 20 ... Secondary sealant, 22 ... Drying material, 30 ... Multiply Layer glass unit, 32 ... bag, 34, 34A ... vent pipe, 36 ... resin layer, 38 ... gas impermeable layer, 40 ... double glazing unit, 42 ... groove, 44 ... cover material, 50 ... window fitting, 52 ... Gap, 54 ... Sash frame, 60 ... Window fitting, 62 ... Sash frame, 64 ... Indoor sash frame, 66 ... Outdoor sash frame, 68 ... Gap, 70 ... Multi-layer glass unit, 72 ... Bulb, 74: Connection member

Claims (8)

  1. 　対向する少なくとも２枚の矩形状のガラス板が枠状のスペーサを介して隔置され、前記ガラス板と対向する前記スペーサの各側面が一次シール材によって前記ガラス板に接着されて前記ガラス板間に中空層が形成され、前記スペーサと前記一次シール材の外側が二次シール材によって封止されてなる複層ガラスと、
    　前記複層ガラスの外部の前記複層ガラスの周縁部に沿って配置された袋体であって、
    前記中空層と連通された膨縮可能な前記袋体と、
    　を備える、複層ガラスユニット。     At least two rectangular glass plates facing each other are separated by a frame-shaped spacer, and each side surface of the spacer facing the glass plate is bonded to the glass plate by a primary sealant, and the space between the glass plates A multi-layer glass in which a hollow layer is formed, and an outer side of the spacer and the primary sealing material is sealed with a secondary sealing material,
    A bag disposed along a peripheral edge of the multilayer glass outside the multilayer glass,
    The inflatable bag that communicates with the hollow layer;
    A multi-layer glass unit.
  2. 　前記複層ガラスは、前記二次シール材と前記スペーサとに貫通配置された通気管を有し、前記袋体は、前記通気管を介して前記中空層に連通される、請求項１に記載の複層ガラスユニット。 The said multilayer glass has a ventilation pipe penetrated by the said secondary sealing material and the said spacer, and the said bag body is connected to the said hollow layer via the said ventilation pipe. Multi-layer glass unit.
  3. 　前記複層ガラスは、前記二次シール材と前記スペーサとに貫通配置された第１接続管を有し、前記袋体は、前記袋体に貫通配置された第２接続管を有し、前記第１接続管と前記第２接続管とは通気管を介して着脱可能に接続される、請求項１に記載の複層ガラスユニット。 The multi-layer glass has a first connecting pipe that is disposed through the secondary sealant and the spacer, and the bag body includes a second connecting pipe that is disposed through the bag body, The multilayer glass unit according to claim 1, wherein the first connection pipe and the second connection pipe are detachably connected via a ventilation pipe.
  4. 　前記袋体は、少なくとも１つの樹脂層と少なくとも１つのガス非透過性層とを積層したフィルムによって構成される、請求項１～３のいずれかに記載の複層ガラスユニット。 The multi-layer glass unit according to any one of claims 1 to 3, wherein the bag is constituted by a film in which at least one resin layer and at least one gas impermeable layer are laminated.
  5. 　空気又は断熱ガスが前記中空層又は袋体に封入される、請求項１～４のいずれか１項に記載の複層ガラスユニット。 The multilayer glass unit according to any one of claims 1 to 4, wherein air or heat insulating gas is enclosed in the hollow layer or bag.
  6. 　前記袋体は、前記複層ガラスの周縁部に位置する前記ガラス板の対向面と、前記二次シール材の外表面とに包囲される断面凹状の溝部に収納され、前記溝部の開放部がカバー材によって覆われる、請求項１～５のいずれか１項に記載の複層ガラスユニット。 The bag body is housed in a groove section having a concave cross section surrounded by a facing surface of the glass plate located at a peripheral edge portion of the multilayer glass and an outer surface of the secondary sealing material, and an opening portion of the groove section is provided. The multilayer glass unit according to any one of claims 1 to 5, which is covered with a cover material.
  7. 　請求項１～５のいずれか１項に記載の複層ガラスユニットと、前記複層ガラスユニットの４辺の周縁部に沿って取り付けられて空隙部を有するサッシ枠と、を備えた窓建具であって、
    　前記複層ガラスユニットの袋体は、前記サッシ枠の前記空隙部に収納される、窓建具。     A window joiner comprising: the multilayer glass unit according to any one of claims 1 to 5; and a sash frame attached along a peripheral edge of four sides of the multilayer glass unit and having a gap. There,
    A window joiner in which the bag of the multi-layer glass unit is housed in the gap of the sash frame.
  8. 　前記サッシ枠は、互いに分離可能な室内側サッシ枠と室外側サッシ枠とから構成され、
    　前記サッシ枠の前記空隙部は、前記室内側サッシ枠と前記室外側サッシ枠とを組み付けることにより、前記室内側サッシ枠と前記室外側サッシ枠との間に形成される、請求項７に記載の窓建具。     The sash frame is composed of an indoor sash frame and an outdoor sash frame that are separable from each other,
    The gap portion of the sash frame is formed between the indoor sash frame and the outdoor sash frame by assembling the indoor sash frame and the outdoor sash frame. Window joinery.
PCT/JP2018/005796 2017-03-10 2018-02-19 Multilayer glass unit and window fixture WO2018163783A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3783183A1 (en) 2019-08-22 2021-02-24 Saint-Gobain Glass France Method and assembly for handling an insulating glazing unit with a pressure compensation element

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Publication number Priority date Publication date Assignee Title
JPH04184146A (en) * 1990-11-16 1992-07-01 Fujitsu Ltd Double window structure body
JPH0626282A (en) * 1992-07-06 1994-02-01 Nippon Sheet Glass Co Ltd Multilayer glass
WO2001065047A1 (en) * 2000-02-28 2001-09-07 Park Kwang Don Pair glass structure with air inhaling and discharging part
JP2003508327A (en) * 1999-09-01 2003-03-04 ピーアールシー−ディゾート インターナショナル インコーポレイテッド Thermal insulation glass unit with structural primary sealant system
JP2007261020A (en) * 2006-03-28 2007-10-11 Toppan Printing Co Ltd Polyamide film laminate
JP2011218805A (en) * 2010-03-26 2011-11-04 Toyobo Co Ltd Gas barrier laminated film

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04184146A (en) * 1990-11-16 1992-07-01 Fujitsu Ltd Double window structure body
JPH0626282A (en) * 1992-07-06 1994-02-01 Nippon Sheet Glass Co Ltd Multilayer glass
JP2003508327A (en) * 1999-09-01 2003-03-04 ピーアールシー−ディゾート インターナショナル インコーポレイテッド Thermal insulation glass unit with structural primary sealant system
WO2001065047A1 (en) * 2000-02-28 2001-09-07 Park Kwang Don Pair glass structure with air inhaling and discharging part
JP2007261020A (en) * 2006-03-28 2007-10-11 Toppan Printing Co Ltd Polyamide film laminate
JP2011218805A (en) * 2010-03-26 2011-11-04 Toyobo Co Ltd Gas barrier laminated film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3783183A1 (en) 2019-08-22 2021-02-24 Saint-Gobain Glass France Method and assembly for handling an insulating glazing unit with a pressure compensation element

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