JP2000351655A - Double glazing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the moisture permeation resistance from lowering due to fluidization of a butyl rubber seal near a glass supporting part by receiving a load by arranging a spacer between a pair of glass plates, forming a hermetically sealed space and additionally providing a spacer reinforcing material for protruding to the side of the hermetically sealed space and holding the interval between the glass plates in the spacer. SOLUTION: This double glazing is obtained by separatedly placing an outer glass plate 1 and an inner glass plate 2 with a spacer 3 arranged in the respective peripheral edge parts and forming a primary seal 4 of a butyl rubber among the glass plates 1 and 2 and spacer 3, forming a secondary seal 5 with a sealing material such as a silcone-based material in the spacer 3 on the edge side of the glass plate, forming a hermetically sealed space 20, fitting a protruding part 12 provided in the spacer 3 on the side of the hermetically sealed space 20 to a recessed part 11 of a spacer reinforcing material 6 and fixing the spacer reinforcing material 6 on the side of the hermetically sealed space 20 near both ends of the spacer 3. The spacer 3 is a channel-like hollow sheathlike member having a groove part on the side of the hermetically sealed space 20 and a cylindrical unit having fine many openings and filled with a hygroscopic agent 7 therein.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a double glazing.

[0002]

2. Description of the Related Art Two glass plates are disposed with a spacer disposed at the periphery thereof interposed therebetween, so that a closed space is formed between the two glass plates and a surface of the spacer facing the glass plate. A primary seal of butyl rubber is applied to each boundary surface between the glass plate and the glass plate.
Double glazing provided with a secondary seal made of a silicone or polysulfide sealing material exhibits high heat insulating properties and is therefore frequently used particularly in buildings such as buildings and houses in cold regions (for example, north of Tohoku). ing.

[0003] As the double-glazed glass, a type using a metal spacer and a type using a resin spacer are commercially available. Since resin spacers do not always have sufficient long-term durability as compared with metal spacers, double-glazed glass of the type using metal spacers is generally used in many cases. The metal spacer has a hollow structure and generally has a moisture absorbent therein.

[0004] The double glazing opposes the spacer on the peripheral edge of the surface of the glass plate on the closed space side so that moisture does not enter into the closed space (generally, dry air is enclosed) formed therein. A primary seal of butyl rubber having high moisture permeability resistance to moisture is provided between the portion and the spacer.
Thereby, the sealed space inside the double glazing is maintained in a dry state by the function of the hygroscopic agent installed on the metal spacer, and the dew condensation in the double glazing is prevented.

[0005] The butyl rubber has high moisture permeation resistance but low shape retention and resilience. Therefore, it is difficult to maintain the strength of the double-glazing with only butyl rubber. For this reason, a secondary seal with a silicone-based or polysulfide-based sealing material is applied to the edge of the glass plate outside the spacer for the purpose of bonding the two glass plates.

In recent years, a method of supporting a glass plate without using a sash, that is, a DPG method (a dot point glazing method, also known as a glass method) in which holes are formed in four corners of the glass plate and bolted to support the glass plate. Plate point support method),
A non-perforated glass plate point support method in which four corners or sides of a non-perforated glass plate are sandwiched and supported from both sides by hardware or the like, or a face glass that forms a wall surface with upper and lower ends fixed and orthogonal to it Double-layer glass has begun to be used in a glass screen construction method in which rib glass is bonded with a sealing material.

In the DPG construction method, since the periphery of the glass plate is not fitted into the sash frame, when the glass plate receives wind pressure, the peripheral end of the glass plate bends by about several mm in an out-of-plane direction.
When using a double-layer glass for the DPG construction method, butyl rubber used for the bonding surface on both sides of the spacer of the double-layer glass is a high-viscosity material and adheres to the glass plate, but since shape retention and restoring properties are weak, The butyl rubber was fluidized under the influence of bending and wind pressure, and there was a possibility that the moisture permeability resistance was reduced.

In order to address the above problems, for example, the following configuration has been proposed in Japanese Patent Laid-Open Publication No. 09-203274. In this configuration, the spacer is a channel-shaped member having a groove on the closed space side, and a double structure (2) in which an internal spacer filled with a hygroscopic agent and having a large number of fine openings is inserted into the channel. Heavy spacer). The spacer has a continuous protruding portion having a constant height in the circumferential direction along the closed space side of the side surface in contact with the glass plates with a height dimension of the butyl rubber-adherable surface of 8 mm or more. Configuration. With such a configuration, fluidization of the butyl rubber is suppressed by increasing the amount of the butyl rubber.

Further, in this configuration, four spacers, which are linear members, are engaged with each other such that the corner portions in the engaged state are at right angles, so that the planar shape is rectangular. In the engagement of the corner portion, a right-angled corner member made of an aluminum alloy or the like called a corner key is inserted and fitted into the end of the spacer. However,
In this configuration, the spacer is configured to increase the area of adhesion to the butyl rubber. Therefore, since a large amount of butyl rubber is used, the total weight is increased, and it is difficult to maintain a rectangular shape only by the frictional force due to the insertion of the corner member. Therefore, a screw hole is provided in the corner member, and the screw-shaped member is tightened from the closed space side, so that the engagement has sufficient strength.

However, in a method of directly supporting the peripheral portion of the spacer at the edge of the glass sheet, such as a hole-free glass sheet point supporting method, the supporting method is more complicated than the DPG method of supporting the glass sheet in the plane of the glass sheet. The force applied to the periphery of the spacer in the vicinity of the portion becomes large, and the continuous spacer is used in the circumferential direction along the closed space side of the side surface in contact with the glass plates on both sides using the double spacer. However, even with the configuration having the above, the distance between the two glass plates in the vicinity of the support portion changes, and it has been difficult to completely suppress fluidization of the butyl rubber.

[0011]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a double-glazing system using the above-mentioned double-glazing system, in which the butyl rubber in the vicinity of the glass support is fluidized and the moisture permeation resistance is reduced. Solving the problem.

[0012]

SUMMARY OF THE INVENTION According to the present invention, two glass plates are interposed with a spacer disposed at a peripheral portion thereof so that a closed space is formed between the two glass plates. A primary seal of butyl rubber is provided on each boundary surface between the glass plate and the surface of the spacer facing the glass plate, and furthermore, between the two glass plates on the glass plate edge side of the spacer. A double-layered glass in which a silicone-based or polysulfide-based secondary seal is applied to
A double glazing characterized in that the spacer is provided with a spacer reinforcing material projecting toward the closed space side and maintaining a space between the two glass plates. This solves the problem that the butyl rubber near the spacer reinforcing material is fluidized, and the moisture permeation resistance to moisture is reduced.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, the spacer is a channel-shaped member having a groove on a closed space side, and a cylindrical body having at least a number of openings finer than the groove inside the channel. In addition, an internal spacer filled with a hygroscopic agent is inserted into the cylindrical body, and the spacer reinforcing material is fitted to the spacer, and screwed into a threaded member from the sealed space side. Preferably, it is fixed to a spacer. Thereby, the spacer reinforcing member can be fixed easily and reliably. In addition, the use of the internal spacer in which the hygroscopic agent is filled in the cylindrical body simplifies the assembly of the double glazing.

Further, in the present invention, it is preferable that the spacer reinforcing member is integrated with a corner member which engages the spacers at an end of the spacer. Thereby, the spacers can be reinforced at the same time as the spacers are engaged with each other at the corners.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of an essential part of an embodiment of the double-glazing of the present invention, and FIG. 2 is an exploded perspective view of the essential part for explaining the assembly of a spacer used in the embodiment. In FIG. 1, an outer glass plate 1 and an inner glass plate 2 are separated from each other by spacers 3 arranged on the periphery thereof.
Primary seals 4 and 4 made of butyl rubber are provided between the inner glass plate 2 and the spacer 3, and a secondary seal 5 made of a silicone-based or polysulfide-based sealing material is provided on the glass plate edge side of the spacer 3. As a result, a closed space 20 is formed between the two glass plates 1 and 2.

In the double glazing, spacer reinforcing members 6 are fixed to the closed spaces near both ends of the spacer 3.
In the illustrated example, the projections 12 are provided on the closed space 20 side of the spacer 3 in order to attach (fix) the spacer reinforcing member 6.
Are provided with recesses 11, 11 which fit into the projections 12, 12, respectively.

The spacer 3 is a channel-shaped hollow sheath member having a groove on the closed space 20 side. The internal spacer 8 is inserted into the hollow portion of the spacer 3. The internal spacer 8 is a cylindrical body having a large number of fine openings, and is filled with the hygroscopic agent 7. As shown in FIG. 2, the spacers 3 adjacent to each other at the corners are fixed by inserting a corner member 9 at the end and screwing a screw-like member from the closed space side.

The spacer reinforcing material 6 protrudes from the spacer 3 toward the closed space by about 3 to 10 mm. The presence of the spacer reinforcing member 6 increases the rigidity of the spacer at the peripheral edge of the double-glazed glass. That is, when the glass plate receives a load such as wind pressure, a change in the interval between the two glass plates in the vicinity of the spacer reinforcing member 6 is suppressed by the spacer reinforcing member 6, and as a result, the fluidization of butyl rubber is also suppressed, and the moisture permeability resistance is reduced. Can be held.

The spacer reinforcing member 6 has a shape-retaining property when the glass plate is subjected to a load due to wind pressure or the like (ie, has a small deformation), and is not so hard as not to scratch the glass plate. It is desirable. Therefore, as a material, for example, an aluminum alloy having a longitudinal elastic coefficient equal to or higher than that of glass and having low hardness is preferable.

The width of the spacer reinforcing member 6 (the width in the left-right direction in FIG. 1) is determined by the distance between the glass plates 1 and 2 so as to perform the above-described operation (a function of suppressing a change in the distance between the glass plates). It is preferred that they are substantially the same. The length of the spacer reinforcing member 6 in the direction parallel to the edge of the glass plate is preferably determined according to the load to be shared by the spacer reinforcing member 6.

The spacer reinforcing member 6 is provided with concave portions 11, 11 which fit into the grooves on the closed space side of the spacer 3, and the concave portions 11, 11 are aligned in the longitudinal direction of the grooves of the spacer 3 (ie, the glass plate). (Parallel direction to the inside), the spacers 6 are fitted to the protruding portions 12, 12 which are sides projecting inward, so that the spacer reinforcing member 6 does not come off to the closed space side. The spacer reinforcing member 6 is positioned so that a part thereof rests on the surface of the corner member 9 on the closed space side.
It is preferable that a screw-like member 14 is screwed into a screw hole 13 provided in the vicinity of the central portion from the sealed space side so as to be fixed to the spacer 3. As a result, the spacer reinforcing member 6 does not move in a direction parallel to the edge of the glass plate.

The above configuration will be described with reference to the sectional view of FIG. The internal spacer 8 is inserted inside the spacer 3, and then the spacer reinforcing material 6 is inserted. Spacer reinforcement 6
As described above, the concave portion (not shown) is fitted to the protrusion 12 of the spacer 3 as described above, and the vertical movement in FIG. Next, the corner member 9 is inserted into the inner left end of the spacer 3, and then the screw member 14 is screwed into the screw hole 13 of the spacer reinforcing member 6 from the closed space side.

When the screw member 14 is screwed into the screw hole 13 and tightened, the corner member 9 is pressed against the bottom inside the spacer 3. On the other hand, the spacer reinforcing member 6 does not move because the concave portion (not shown) is fitted with the projection 12 of the spacer 3 and the vertical movement is restricted. Therefore, the spacer 3, the spacer reinforcing member 6, and the corner member 9 are rubbed by the friction between the concave portion (not shown) of the spacer reinforcing member 6 and the protrusion 12 of the spacer 3 and the friction between the corner member 9 and the bottom inside the spacer 3. Are restricted.

The method of fixing the spacer reinforcing member 6 to the spacer 3 is not limited to the above example. For example, a through hole is provided in the vicinity of the center of the spacer reinforcing member 6, a screw hole is provided at a corresponding portion of the corner member 9, and a threaded member having a bolt head is passed through the spacer reinforcing member 6 from the sealed space side. A configuration in which the spacer reinforcing member 6 is screwed into a screw hole may be employed. Further, in FIG. 7, the spacer 3, the spacer reinforcing material 6, and the corner member 9 are simultaneously fixed by one screw member 14, but the spacer 3 and the corner member 9 are fixed by another screw member. There may be.

The spacer reinforcing member 6 is preferably provided near the both ends of the spacer 3 as described above. However, the supporting position in the double-layer glass fixing method (that is, the supporting position in the non-perforated glass plate point supporting method) is preferred. Etc.), it may be attached to a position other than the vicinity of both ends. Also, two or more spacers may be attached to one spacer.

As another embodiment of the double glazing of the present invention,
FIG. 3 is a sectional view of a main part of the corner member 9 and the spacer reinforcing member 6 integrated with each other, and FIG. 4 is an exploded perspective view of the main part for explaining the assembling of the spacer. The same reference numerals in the drawings denote the same parts as those in FIGS. 1 and 2.

Since the four spacers, which are linear members, need to have a rectangular planar shape when assembled, they are engaged so that the corner portions in the engaged state are at right angles. The engagement of the corner portion is such that a corner member having a right angle shape made of an aluminum alloy or the like is inserted into a spacer end portion,
Mated.

As shown in FIG. 1 and FIG.
When the and the spacer reinforcing material 6 are provided separately,
Each of them must be fixed to the spacer 3. However, as shown in FIGS. 3 and 4, the corner member-integrated spacer reinforcing member 17 is formed by integrating the two members, so that the spacer reinforcing member and the corner member can be fixed to the spacer. The number of screwed portions at the time of engagement can be reduced by half, and the workability of assembling a double-layer glass can be improved.

Next, an embodiment in which the double-glazed glass of the present invention is used in the hole-free glass plate point supporting construction method will be described. In a construction in which the periphery of the spacer at the edge of the glass plate is directly supported, as in the case of the hole-free glass plate point support construction method, the spacer in the vicinity of the support portion is compared with the DPG construction method in which the glass plate is supported in the glass plate surface. The force applied to the periphery increases.

FIG. 5 shows an embodiment of the present invention in a method of supporting four corners of a glass plate in the holeless glass plate point supporting structure, and FIG. 6 shows an example of the present invention in a method of supporting a part of a side of the glass plate. The following shows an example. That is, FIG. 5 and FIG.
The front view of the support part of the glass plate point support construction method which mounts and forms the same plane which connects several sheets of double glazing in the up-down and left-right direction is shown, respectively.

In FIG. 5, four pieces of double-glazed glass are abutted at a corner, and the corner and the vicinity thereof are fixed by supporting metal 15 from both sides of the double-glazed glass. In FIG. 6, two pieces of double-glazed glass are abutted at the edge, and one portion of the edge and the vicinity thereof are fixed by sandwiching the supporting glass 15 from both sides of the double-glazed glass.
5 and 6, reference numeral 16 denotes a joint seal.

In each of FIGS. 5 and 6, the spacer reinforcing material 6 has a shape protruding toward the closed space by about 3 to 7 mm from the spacer, but the spacer reinforcing material is hidden behind the supporting hardware 15. Therefore, the design is not reduced.

[0033]

According to the present invention, even in a glass plate supporting structure in which a spacer peripheral portion at an edge of a glass plate is supported, as in a holeless glass plate point supporting structure using double-glazing, the vicinity of the supporting portion can be improved. Butyl rubber is fluidized and a double-glazed glass which does not lower the moisture permeation resistance can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of an embodiment of a double glazing of the present invention.

FIG. 2 is an exploded perspective view of an essential part for explaining the assembling of a spacer used in an embodiment of the double glazing of the present invention.

FIG. 3 is a sectional view of a main part of another embodiment of the double-glazed glass of the present invention.

FIG. 4 is an exploded perspective view of a main part for explaining assembly of a spacer used in another embodiment of the double-glazed glass of the present invention.

FIG. 5 is a front view of a main part of the double-glazed glass embodiment of the present invention in the perforated glass plate point supporting method.

FIG. 6 is a front view of a main part of the double-glazed glass embodiment of the present invention in the holeless glass plate point supporting method.

FIG. 7 is a sectional view of an essential part for explaining the assembling of a spacer used in the embodiment of the double-glazed glass of the present invention.

[Explanation of symbols]

 1: Outside glass plate (glass plate) 2: Inside glass plate (glass plate) 3: Spacer 4: Primary seal 5: Secondary seal 6: Spacer reinforcing material 7: Hygroscopic agent 8: Internal spacer 9: Corner member 10: Threaded member 11: Recess (spacer reinforcing material) 12: Projection (spacer) 13: Screw hole 14: Threaded member 15: Support hardware 16: Joint seal 17: Corner member integrated spacer reinforcing material 20: Sealed space

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E016 BA01 CA01 CB01 CC02 EA01 FA01 4G061 AA10 AA25 BA01 CB02 CD02 CD22 CD25 CD27

Claims (3)

[Claims] 1. Two glass plates are arranged with a spacer disposed at a peripheral portion thereof so as to form a sealed space between the two glass plates, and the glass of the spacer is provided. A primary seal made of butyl rubber is applied to each boundary surface between the surface facing the plate and the glass plate, and a silicone-based or polysulfide-based seal is provided between the two glass plates on the glass plate end side of the spacer. A double-layer glass provided with a next seal, wherein the spacer is provided with a spacer reinforcing material projecting toward the closed space side and maintaining a distance between the two glass plates. Double glazing. 2. The spacer is a channel-shaped member having a groove on the sealed space side, and a cylindrical body having at least a plurality of openings finer than the groove at the inside of the channel. An internal spacer filled with a hygroscopic agent is inserted into the body, and the spacer reinforcing material is fitted to the spacer and fixed to the spacer by screwing a screw-like member from the closed space side. The double glazing according to claim 1. 3. The double-glazed glass according to claim 1, wherein the spacer reinforcing member is integrated at a spacer end with a corner member that engages the spacers.