JP2016199946A - Glazing channel and window glass with glazing channel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glazing channel capable of enhancing fire resistance performance by improving window glass holding performance under a high temperature circumstance.SOLUTION: When assembling a window glass and a window frame, the glazing channel is interposed therebetween. The glazing channel is constituted of flame retardant material. Viewing from a direction perpendicular to the window glass, the length of the glazing channel exposed from the window frame is longer than the length concealed by the window frame.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a glazing channel and a window glass with a glazing channel.

  Conventionally, a configuration is known in which a glazing channel is attached to the outer periphery of a window glass, and the window glass having the glazing channel attached is fitted into a window frame.

  As a glazing channel, the structure which consists of a cross-sectional U-shaped main-body part surrounding the outer periphery of a window glass and the seal | sticker part provided in the opening side both ends of a main-body part is disclosed (for example, refer patent document 1). .

Japanese Patent Laid-Open No. 10-299351

  However, in the technique described in Patent Document 1, the performance of holding the window glass is not sufficient in a high temperature environment such as a fire.

  Therefore, an object of the present invention is to provide a glazing channel capable of improving the performance of holding a window glass in a high temperature environment and improving the fire resistance.

  In one proposal, a glazing channel interposed when the window glass is attached to the window frame, wherein the glazing channel is made of a flame-retardant material and is seen from the window frame when viewed from a direction orthogonal to the window glass. The length of the exposed glazing channel is longer than the length hidden by the window frame.

  According to one aspect, it is possible to provide a glazing channel capable of improving the performance of holding a window glass in a high temperature environment and enhancing the fire resistance.

The schematic sectional drawing of the multilayer glass with a glazing channel which concerns on one Embodiment of this invention. The figure for demonstrating the glass plate which comprises the multilayer glass with a glazing channel which concerns on one Embodiment of this invention. The schematic sectional drawing which shows the other example of the multilayer glass with a glazing channel which concerns on one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, the duplicate description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  The structural example of the glass with a glazing channel in which the glazing channel according to one embodiment of the present invention is used will be described. The glazing channel which concerns on one Embodiment of this invention can be used suitably for the window glass which has fireproof performance, for example, a glass with a mesh, a multilayer glass.

  Below, the structural example at the time of applying a glazing channel to a multilayer glass is demonstrated, referring FIGS. 1-3.

  FIG. 1 is a schematic cross-sectional view of a multi-layer glass with a glazing channel according to an embodiment of the present invention. FIG. 2 is a view for explaining a glass plate constituting the multilayer glass with a glazing channel according to an embodiment of the present invention. FIG. 3 is a schematic cross-sectional view showing another example of the multilayer glass with a glazing channel according to an embodiment of the present invention.

  As shown in FIG. 1, the laminated glass with a glazing channel according to an embodiment of the present invention includes a multilayer glass 100 and a glazing channel 110 provided so as to protect the outer periphery of the multilayer glass 100. And the laminated glass with a glazing channel is attached to the groove part 121 formed in the window frame 120 via the setting block 130, for example.

  As shown in FIG. 1, the multi-layer glass 100 includes a first glass plate 10, a second glass plate 20, a spacer 30, a primary seal 40, a secondary seal 50, and a hollow layer 60. Including. In the double-glazed glass 100, the first glass plate 10 is spaced from the second glass plate 20 via the spacer 30, and the first glass plate 10 is separated by the primary seal 40 and the secondary seal 50. And the outer periphery of the 2nd glass plate 20 becomes the structure sealed.

  The 1st glass plate 10 is the tempered glass by which the air cooling strengthening process was carried out. The thickness of the first glass plate 10 (indicated by “T1” in FIG. 1) can be set to 2 mm or more from the viewpoint of obtaining sufficient fire resistance.

  Although it does not specifically limit as an air-cooling strengthening process, It is preferable to heat the 1st glass plate 10 after a grinding | polishing process to 620 degreeC or more and 660 degrees C or less. By setting the temperature of the first glass plate 10 before quenching to 620 ° C. or higher, cracking due to tensile stress temporarily generated during the cooling process is prevented, and sufficient residual strain, that is, surface compressive stress is generated to block the first glass plate 10. Flame performance can be secured. On the other hand, by setting the temperature of the first glass plate 10 before rapid cooling to 660 ° C. or less, it is possible to prevent traces and warpage of the heat treatment and ensure a clear view (suppress the hindrance to the view).

  Further, in order to uniformly apply a surface compressive stress to the main surface of the first glass plate 10, compressed air of 5 ° C. or more and 80 ° C. or less is ejected from the nozzle to the entire upper and lower surfaces of the first glass plate 10. Rapid cooling is preferred. In addition, since the air is compressed by the blower, the temperature of the compressed air becomes higher than the outside air temperature due to the rotational energy of the blower, and may rise to nearly 80 ° C. in some cases. However, the cooling air can be lowered to about 5 ° C. by cooling with a cooler.

  Further, as shown in FIG. 2, the first glass plate 10 has a main surface 10a of the first glass plate 10 and a boundary portion between the main surface 10a and the end surface 10b of the first glass plate 10 by polishing. It is preferable that the inclined surface 10c inclined with respect to the end surface 10b is formed. Examples of the polishing method include a method using a plurality of polishing stones having different abrasive particle diameters.

  The angle A formed between the main surface 10a of the first glass plate 10 and the inclined surface 10c is preferably 135 degrees or more and 170 degrees or less. If the angle A is smaller than 135 degrees, the corner portion 10d formed by the inclined surface 10c and the main surface 10a of the first glass plate 10 is likely to be chipped, the edge strength before physical strengthening treatment is insufficient, and the temperature is high. Heating and cooling with high wind pressure are required. For this reason, the first glass plate 10 is distorted or deformed, and a clear view cannot be obtained. Further, when the angle A is larger than 170 degrees, it is necessary to polish with high accuracy, so that the equipment cost increases. Further, from the viewpoint that chipping is not particularly likely to occur, the angle A is preferably 151 degrees or more and 170 degrees or less, and more preferably 154 degrees or more and 170 degrees or less. Note that the angle A may or may not be the same with respect to the main surface 10a of the upper and lower first glass plates 10 as long as they are within these ranges.

  Moreover, it is preferable that the end surface 10b of the 1st glass plate 10 is grind | polished. Thereby, the dispersion | variation in the edge strength by cutting quality can be stabilized. The polishing process is particularly preferably parallel polishing (a polishing method in which the feed direction for polishing the glass is the same as the rotation direction of the grindstone where the glass and the grindstone grinding surface meet).

  Moreover, it is preferable that the surface compressive stress in the main surface 10a of the 1st glass plate 10 is 70 MPa or more and 155 MPa or less. By setting the surface compressive stress to 70 MPa or more, it is possible to obtain the flame shielding performance necessary for heat-resistant tempered glass. Further, by setting the surface compressive stress to 155 MPa or less, it is possible to suppress the visual field hindrance due to the compressive stress distortion of the first glass plate 10.

  As a method for measuring the surface compressive stress, a method using a differential refractometer described in JIS R3222 (2003 edition) can be used. The distribution of the surface compressive stress preferably has a small variation in the plane of the first glass plate 10 from the viewpoint that a uniform field of view can be obtained in the plane of the first glass plate 10.

  The second glass plate 20 is disposed so as to face the first glass plate 10. The second glass plate 20 has the same or substantially the same size as the first glass plate 10 in plan view. Similar to the first glass plate 10, the second glass plate 20 is tempered glass that has been air-cooled and tempered. The thickness of the second glass plate 20 (indicated by “T2” in FIG. 1) can be set to 2 mm or more from the viewpoint of obtaining sufficient fire resistance.

  The second glass plate 20 is a tempered glass that has been subjected to air-cooling tempering treatment, and is not particularly limited as long as the thickness is 2 mm or more. However, the second glass plate 20 may have the same thickness as the first glass plate 10. The glass plate 10 may have a different thickness.

  Similar to the first glass plate 10, the second glass plate 20 is cut to a predetermined size, and the second glass plate 20 is polished by polishing at the boundary between the main surface and the end surface of the second glass plate 20. It is preferable that an inclined surface inclined with respect to the main surface and the end surface of the plate 20 is formed. Like the first glass plate 10, the angle A formed by the main surface and the inclined surface of the second glass plate 20 is preferably 135 degrees or more and 170 degrees or less.

  Moreover, it is preferable that the end surface of the 2nd glass plate 20 is grind | polished. Thereby, the dispersion | variation in the edge strength by cutting quality can be stabilized. Further, as the polishing process, parallel polishing is particularly preferable.

  Further, the surface compressive stress on the main surface of the second glass plate 20 is preferably 70 MPa or more and 155 MPa or less similarly to the first glass plate 10.

On the surface of at least one hollow layer 60 side of the first glass plate 10 and the second glass plate 20, as shown in FIG. 3, Low-E (Low Emissivity) film 70 is preferably formed. The Low-E film 70 is a thin film that restricts the passage of heat by suppressing radiant heat transfer. The Low-E film 70 is not particularly limited. For example, an absorption layer made of titanium nitride (TiN), a transparent dielectric film made of silicon nitride (Si ₃ N ₄ ), an Ag main component film, and the like are made of transparent metal zinc. It can be set as the structure which laminated | stacked the dielectric film in this order.

  The spacer 30 is a member that is provided between the first glass plate 10 and the second glass plate 20 and separates the first glass plate 10 and the second glass plate 20. The spacer 30 is formed in a frame shape and surrounds the hollow layer 60. In the hollow layer 60, a pillar that keeps the distance between the first glass plate 10 and the second glass plate 20 may be provided. The spacer 30 has a hollow portion 31 therein, and the hollow portion 31 is filled with a drying material 32 such as granular zeolite. The spacer 30 has a through hole 33 that allows the cavity 31 to communicate with the hollow layer 60, and the air in the hollow layer 60 is dried through the through hole 33. Although it does not specifically limit as a material of the spacer 30, For example, aluminum, stainless steel, hard resin is mentioned.

  The primary seal 40 is provided between the first glass plate 10 and the spacer 30, and bonds the first glass plate 10 and the spacer 30. The primary seal 40 is provided between the spacer 30 and the second glass plate 20 and adheres the spacer 30 and the second glass plate 20. The material of the primary seal 40 is not particularly limited, and examples thereof include a butyl sealant. In addition, you may mix | blend a flame retardant from a viewpoint of a flame retardance improvement. Furthermore, from the viewpoint of improving processability, tackiness, etc., vulcanizing agents, vulcanization accelerators, crosslinking agents such as vulcanization aids, vulcanization retarders, and other additives (carbon black, silica, clay, talc, Fillers such as calcium carbonate, wax, silane coupling agent, activator, plasticizer, softener, anti-aging agent, antioxidant, lubricant, pigment, UV absorber, dispersant, dehydrating agent, tackifying Agents, antistatic agents, processing aids). These compounding components can include those generally used for rubber compositions. Their blending amounts are not particularly limited, and are arbitrarily selected.

  The secondary seal 50 surrounds the primary seal 40 and seals the hollow layer 60 together with the primary seal 40. The material of the secondary seal 50 is not particularly limited, but is made of a curable elastomer such as polysulfide, silicone, urethane, and the like, and similarly to the primary seal 40, appropriate modification can be added to develop adhesion to glass. Etc. are preferred.

  The hollow layer 60 is a sealed space that is sealed by the first glass plate 10, the second glass plate 20, the primary seal 40, and the secondary seal 50, and is isolated from the atmosphere. The thickness of the hollow layer 60 (indicated by “T3” in FIG. 1) can be 3 mm or more from the viewpoint of heat insulation performance.

  The thickness of the hollow layer 60 is not particularly limited as long as it is 3 mm or more, but is necessary for the thickness of the first glass plate 10, the thickness of the second glass plate 20, the groove width of the window frame 120, and the attachment of the glazing channel 110. It is preferable to be determined according to the thickness. Specifically, when the thickness of the first glass plate 10 is 3 mm, the thickness of the second glass plate 20 is 3 mm, the groove width of the window frame 120 is 14 mm, and the thickness necessary for attaching the glazing channel 110 is 4 mm In addition, the thickness of the hollow layer 60 can be 4 mm.

  The hollow layer 60 is filled with, for example, dry air or inert gas. The kind of the inert gas is not particularly limited, and examples thereof include krypton gas and argon gas. However, krypton gas is preferable from the viewpoint of suppressing convection in the hollow layer 60 and improving heat insulation performance. The atmospheric pressure of the hollow layer 60 may be the same as the atmospheric pressure or may be smaller than the atmospheric pressure. The hollow layer 60 may be evacuated.

  The glazing channel 110 is made of a flame retardant material and has a substantially U-shaped cross section. The glazing channel 110 is attached to the outer periphery of the multilayer glass 100 and is fitted into the groove 121 formed on the inner peripheral surface of the window frame 120.

  The glazing channel 110 includes a bottom wall portion 111 a that fixes the end surface of the multilayer glass 100, and a side wall portion 111 b that extends from the bottom wall portion 111 a and is provided along the main surface of the multilayer glass 100. A U-shaped main body 111 is provided. The material of the main body 111 is preferably a flame retardant hard resin, and for example, hard PVC (polyvinyl chloride) can be used.

  The bottom wall portion 111 a is provided along the end surface of the multilayer glass 100 (indicated by “Y direction” in FIG. 1), protects the end surface of the multilayer glass 100, and also protects the end surface of the multilayer glass 100. Fasten.

  The side wall part 111 b extends from the bottom wall part 111 a and is provided along the main surface of the multilayer glass 100. On the surface of the side wall portion 111b on the side where the multilayer glass 100 is attached, a tongue-like portion 111c mainly made of a flame-retardant soft resin is provided.

  The tongue-like portion 111c improves the fitting property when the end surface of the multilayer glass 100 is fixed to the glazing channel 110, and relaxes the contact between the multilayer glass 100 and the side wall portion 111b. That is, when the glazing channel 110 is attached to the end surface of the multilayer glass 100, the tip of the tongue-like portion 111c is elastically bent so as to follow the multilayer glass 100 (in FIG. 1, the position of the solid line from the position of the broken line). The multilayer glass 100 is held by elastic restoring force.

  The tongue-like portion 111c is preferably formed so as to face the insertion direction of the multilayer glass 100 (indicated by “−Z direction” in FIG. 1) rather than perpendicular to the side wall portion 111b. Thereby, workability | operativity at the time of making the multilayer glass 100 adhere to the glazing channel 110 and fitting property when making the glazing channel 110 adhere to the multilayer glass 100 improve.

  In FIG. 1, two tongue pieces 111c are formed on each of the left and right side walls 111b. However, the present invention is not limited in this respect, and the tongue pieces 111c are formed on the left and right side walls. One may be formed on each of the portions 111b, or three or more may be formed.

  The glazing channel 110 has a main body so as to protrude inward of the window frame 120 (indicated by “+ Z direction” in FIG. 1) from the surface of the side wall portion 111b opposite to the side on which the multilayer glass 100 is fitted. The seal portion 112 is formed integrally with the portion 111.

  The seal portion 112 improves the fitting property when the end surface of the multilayer glass 100 is fixed to the glazing channel 110. That is, when the glazing channel 110 is attached to the end surface of the multilayer glass 100, the tip end portion of the seal portion 112 is elastically bent so as to follow the multilayer glass 100 (in FIG. 1, from the position of the broken line to the position of the solid line). ), The multilayer glass 100 is held by an elastic restoring force.

  As a material of the seal portion 112, a flame-retardant soft resin that is softer than the main body portion 111 is preferable. For example, soft PVC can be used.

  The protruding length from the inner peripheral surface of the window frame 120 in the glazing channel 110 (indicated by “L1” in FIG. 1) is a surface on which the end surface of the double-glazed glass 100 is fixed (hereinafter referred to as “stop”). It is possible to make the length longer than the length from the inner surface of the window frame 120 (hereinafter referred to as “squeezing depth”) (indicated by “L2” in FIG. 1). As a result, as compared with the conventional case where the squeezing depth is longer than the protruding length from the inner peripheral surface of the window frame 120 in the glazing channel 110, the glazing channel 110 is not subjected to the first operation in a high temperature environment such as a fire. The first glass plate 10 and the second glass plate 20 can be adhered to each other, and the first glass plate 10 and the second glass plate 20 can be held. As a result, fire resistance can be increased.

  Moreover, it is preferable that the stagnation depth is 5 mm or more from the viewpoint that sufficient wind pressure resistance is obtained. Moreover, the stagnation depth reduces the temperature difference between the portion of the multilayer glass 100 that is squeezed into the window frame 120 and the portion that is not squeezed into the window frame 120, and from the viewpoint of suppressing thermal cracking, It is preferable that it is 7 mm or less.

  Moreover, it is preferable that the protrusion length from the internal peripheral surface of the window frame 120 in the glazing channel 110 is 8 mm or more from a viewpoint that the 1st glass plate 10 and the 2nd glass plate 20 can fully be hold | maintained.

  Further, the sum of the protruding length from the inner peripheral surface of the window frame 120 and the penetration depth in the glazing channel 110 (indicated by “L1 + L2” in FIG. 1) is that the hollow layer 60 of the spacer 30 is formed from the fastening surface. It is preferably longer than the length to the surface on the other side (indicated by “L3” in FIG. 1). As a result, when the multilayer glass 100 to which the glazing channel 110 is attached is viewed from a direction perpendicular to the main surface of the multilayer glass 100 (indicated by “X direction” in FIG. 1), the spacer 30 is Concealed by the glazing channel 110. For this reason, the designability improves.

  A method for forming the glazing channel 110 is not particularly limited, and for example, a two-color molding method using the material of the main body 111 and the material of the seal 112 can be mentioned.

  As explained above, according to the glazing channel of one embodiment of the present invention, the glazing channel is formed of a flame-retardant material. Moreover, the length of the glazing channel exposed from the window frame is longer than the length hidden by the window frame when viewed from the direction orthogonal to the window glass. For this reason, in a high temperature environment such as a fire, the glazing channel becomes ash in a state in which the window glass is held, so that the state in which the window glass is held can be maintained. For this reason, the performance which hold | maintains a window glass can be improved and fireproof performance can be improved.

  Hereinafter, more specific examples of the present invention will be described.

  For example, in Japan, the performance required as fire-proof glass is to satisfy the flame shielding performance defined in Article 2, Item 9-2 of the Building Standards Act and Article 64 of the Building Standards Act. As a test for evaluating this, for example, there is a fire prevention test based on the heating temperature curve of ISO834-1: 1999. In order to pass this, it is required that damage such as a crack through which a flame passes and a gap do not occur during the fire prevention test.

  The multi-layer glass used in the fire prevention test this time is a first glass plate (thickness: 2.8 mm), a second glass plate (thickness: 2.8 mm), a spacer (material: aluminum), and a primary seal (material: Butyl), a secondary seal (material: polysulfide), and a hollow layer (thickness: 4.0 mm). In the multilayer glass, the first glass plate is spaced from the second glass plate through the spacer, and the first glass plate and the second glass plate are separated by the primary seal and the secondary seal. The outer periphery is sealed.

  The first glass plate and the second glass plate are tempered glass subjected to air-cooling tempering treatment. The angle formed between the main surface and the inclined surface of the first glass plate and the second glass plate is 150 degrees. The surface compressive stress of the first glass plate and the second glass plate is 120 MPa. A Low-E (Low Emissivity) film is formed on the surface of the second glass plate on the hollow layer side from the viewpoint of improving heat insulation performance and heat insulation performance.

  The spacer is formed in a frame shape and surrounds the hollow layer. Further, the spacer has a hollow portion therein, and the hollow portion is filled with granular zeolite. The spacer has a through hole that allows the hollow portion to communicate with the hollow layer, and the air in the hollow layer is dried through the through hole.

  The primary seal is provided between the first glass plate and the second glass plate and the spacer, and bonds the first glass plate and the second glass plate to the spacer. The secondary seal surrounds the primary seal and seals the hollow layer with the primary seal.

  The hollow layer is a sealed space that is sealed by the first glass plate, the second glass plate, the primary seal, and the secondary seal and is isolated from the atmosphere.

  The glazing channel has a substantially U-shaped cross-section including a bottom wall portion for fastening the end surface of the multilayer glass and a side wall portion extending from the bottom wall portion and provided along the main surface of the multilayer glass. Have As the material of the main body, PVC for fire doors (fire prevention equipment) specified by the Architectural Gasket Industry Association is used. The bottom wall portion is provided along the end surface of the multilayer glass, and protects the end surface of the multilayer glass and fastens the end surface of the multilayer glass. The glazing channel has a seal portion formed integrally with the main body portion so as to protrude inward of the window frame from the surface of the side wall portion opposite to the side on which the double-glazed glass is fitted. As a material for the seal portion, PVC softer than the main body portion is used. The protruding length from the inner peripheral surface of the window frame in the glazing channel is 8 mm, and the penetration depth is 5 mm. The length from the fastening surface to the surface on the side where the hollow layer of the spacer is formed is 11 mm.

  As a result of the test, there was no flame eruption or flame that continued beyond 10 seconds toward the non-heated side, and no damage such as cracks through which the flame passed and gaps did not occur. The multilayer glass did not fall out of the glazing channel.

  As described above, the glazing channel and the multilayer glass with the glazing channel have been described by the embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications and improvements can be made within the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 1st glass plate 20 2nd glass plate 30 Spacer 60 Hollow layer 100 Multi-layer glass 110 Grazing channel 111 Main body part 111a Bottom wall part 111b Side wall part 112 Seal part 120 Window frame 121 Groove part

Claims (7)

A glazing channel interposed when the window glass is attached to the window frame,
The glazing channel is made of a flame retardant material,
The length of the glazing channel exposed from the window frame when viewed from a direction orthogonal to the window glass is longer than the length hidden by the window frame. A main body portion having a substantially U-shaped cross section including a bottom wall portion for fixing an end surface of the window glass, and a side wall portion extending from the bottom wall portion and provided along a main surface of the window glass;
A seal portion formed integrally with the main body portion so as to protrude inward of the window frame from a surface of the side wall portion opposite to the side on which the window glass is fitted.
The glazing channel according to claim 1. The main body is made of a hard resin,
The seal portion is made of a soft resin that is softer than the main body portion.
The glazing channel according to claim 2. The length from the fastening surface to which the end face of the window glass in the glazing channel is fastened to the inner peripheral surface of the window frame is 5 mm or more and 7 mm or less,
The glazing channel according to any one of claims 1 to 3. The protruding length from the inner peripheral surface of the window frame in the glazing channel is 8 mm or more,
The glazing channel according to any one of claims 1 to 4. A glazing channel according to any one of claims 1 to 5,
A windowpane with the glazing channel attached thereto,
Window glass with glazing channel. The window glass includes a first glass plate, a second glass plate, a spacer for separating the first glass plate and the second glass plate, the first glass plate, and the A multi-layer glass having a hollow layer formed between the second glass plate,
The sum of the projecting length from the inner peripheral surface of the window frame in the glazing channel and the length from the fastening surface to which the end face of the window glass in the glazing channel is fastened to the inner peripheral surface of the window frame is Longer than the length from the fastening surface to the surface of the spacer where the hollow layer is formed,
The window glass with a glazing channel according to claim 6.

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