JP2000017958A - Double glazing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double glazing excellent in heat insulating property at its periphery. SOLUTION: In a double glazing sealed with a sealant 9 after two opposite glass plates 2, 2 are bonded together at their outer peripheries via a spacer frame 3 having a drying agent 7 sealed therein, the spacer frame 3 is provided with a low-heat-conductivity frame member 4 of an approximately U-shaped cross section and a lid part 5 made of a resin which is provided in an opening provided in the air layer of the frame member 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double glazing having excellent heat insulating properties around the double glazing.

[0002]

2. Description of the Related Art Conventionally, glass sheets have been frequently used for exterior materials of buildings and the like for the purpose of lighting and design effects. In recent years, in particular, the use of double-glazing has increased for the purpose of energy saving. There is a tendency.

[0003] The double-glazing used for the windows of buildings and the openings of top lights and the like is usually formed by a desiccant-containing spacer disposed between two edges of two glass plates facing each other. It is kept at a predetermined interval and is bonded with an adhesive seal (primary seal), and the periphery thereof is hermetically sealed with an elastic sealing material (secondary seal) to keep the air between the two glass plates in a dry state. Such is common and well known.

[0004] As a spacer frame material as a spacing material between two glass plates used for these double-glazed glasses, a spacer made of an aluminum material has been generally often used because of its easy workability. However, since the aluminum material has a high thermal conductivity, when used in a cold region, the vicinity of the sash frame is cooled from the outside, and dew condensation may occur near the sash on the indoor side.

[0005] In addition, there is a double glazing using a spacer composed of a member having low thermal conductivity in terms of thermal conductivity.
At the time of production as a double glazing at room temperature, there was a problem in the displacement of the glass plate and the strength as a spacing material.

For example, in Japanese Utility Model Publication No. 3-21423, a certain glass plate is opposed at a predetermined interval,
The outer surface of the cylindrical spacer is formed of a metal material, and the other surface is formed of a transparent resin material, in a double-layer glass in which a cylindrical spacer containing a desiccant is interposed between the ends of the glass plate. The disclosed double glazing is disclosed.

[0007]

Problems to be Solved by the Invention
Japanese Patent Application Publication No. JP-A-2003-115125 is a cylindrical spacer made of a transparent resin material, and for a frozen showcase, the spacer is made of a transparent resin in order to enlarge a see-through portion in the showcase. A stainless steel metal plate having a substantially U-shaped cross section is further formed on the outer half circumference of the square cylindrical spacer for reinforcement.

Although the conventional aluminum cylindrical spacer is replaced with a transparent resin, it has a substantially cylindrical shape. However, a stainless steel cover portion for reinforcement and a transparent resin are used. There is a problem that the resin portion is in a state of being overlapped doubly, and the production cost such as the material cost of the resin portion is relatively high.

[0009]

DISCLOSURE OF THE INVENTION The present invention aims at providing a simple and inexpensive double-glazed glass having particularly excellent heat insulating properties around a seal portion, with a view to providing an outer peripheral portion of two opposing glass plates. After bonding through a spacer frame material in which a desiccant is sealed, a double-layer glass sealed with a sealing material, wherein the spacer frame material has a substantially U-shaped cross section having a low thermal conductivity, and the frame member. A double glazing characterized in that a lid made of resin is provided in an opening provided on the side of the air layer.

Alternatively, a part of or the whole of the lid is embedded and fitted into an opening of the frame member having a substantially rectangular U-shaped cross section. Double glazing as described above.

Alternatively, a part of or the whole of the lid is embedded and fitted in an opening of the frame member having a substantially U-shaped cross section. The above-mentioned double-glazed glass.

Alternatively, the cross-sectional shape of the lid is substantially U-shaped, and the opening-side front end of the frame member having a substantially U-shaped cross section is bent to have a slightly smaller width, and the lid is provided outside the front end. The double-glazed glass described above, wherein

[0013] Alternatively, the double-glazed glass described above, wherein one or more protrusions are provided in the outer peripheral direction at the center of the bottom of the frame member. Alternatively, the side of the air layer of the lid fitting into the opening of the frame member having a substantially U-shaped cross section is brought into contact with the two glass plates, and the gap between the frame member side of the lid and the glass plate is formed. The double glazing described above, wherein a frame member is interposed.

Alternatively, the lid is made of a synthetic resin such as an acrylic resin, an epoxy resin, a polystyrene resin, a polypropylene resin, a phenol resin, or the like. Glass.

Alternatively, the material of the lid is FRP
The double-glazed glass as described above, which is made of any one of a rigid polyurethane foam and a polystyrene foam. Alternatively, the double-glazed glass described above, wherein the frame member having a substantially U-shaped cross section is made of stainless steel.

[0016] Alternatively, the above-mentioned double-glazed glass, wherein the frame member having a substantially U-shaped cross section is made of FRP. Alternatively, the front end of the opening side of the frame member having a substantially U-shaped cross section is bent inward, and the notch provided in the side of the resin lid is inserted into the notch to hold the lid. The above-described double glazing.

Alternatively, the present invention provides the above-mentioned double-glazed glass, wherein the spacer frame is made of FRP in which a frame member and a lid are integrated.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a spacer frame member 3 is provided on an outer peripheral portion of two glass plates 2 and 2 facing each other as a spacing member, and an adhesive 8 serving as a primary seal is provided. The outer peripheral portion is filled with a sealing material 9 as a secondary seal and sealed as a secondary seal, and a rigid frame having a substantially U-shaped cross section excellent in heat insulation as the spacer frame material 3 is provided. A member 4 and a lid portion 5 having better heat insulating properties are fitted and provided in an opening on the air layer side of the frame member. The embedding of the lid 5 into the opening of the frame member 4 having a substantially U-shaped cross section may be a part or the whole of the lid.

A desiccant 7 is sealed in an internal space surrounded by the frame member 4 and the lid 5, and the desiccant 7 is passed through micro holes provided at an appropriate interval in the center of the lid 5. Thereby, the air in the air layer 11 can be constantly maintained in a dry state.

FIG. 1 shows an example in which the spacer frame member 3 is provided at an opening provided on the air layer 11 side of a metal frame member 4 such as stainless steel having a substantially U-shaped cross section having a low thermal conductivity. ,
A cover 5 made of synthetic resin made of hard vinyl chloride resin or the like is fitted, and the cover 5 is embedded in the opening of the frame member 4 having a substantially U-shaped cross section. All cases are shown.

By changing the substantially U-shaped metal frame member 4 from conventional aluminum (thermal conductivity: K = about 200 w / mk) to stainless steel (thermal conductivity: K = about 17 w / mk), The thermal conductivity is reduced to about 1/10 or less, the heat insulation is improved, and the rigidity allows the plate thickness to be reduced. The reason why the air layer 11 side is made of the synthetic resin lid 5 is that, for example, hard vinyl chloride has a thermal conductivity of about 0.2 w / mk, and is much lower than stainless steel, which is a metal having a low thermal conductivity. 1/100 or less of stainless steel, air layer 11
The heat insulation performance of the side can be further improved.

Next, as a modification of the embodiment shown in FIG.
As the spacer frame member 3, the lid portion 5 fitted to the opening provided on the air layer 11 side of the metal frame member 4 made of metal such as stainless steel having a low thermal conductivity and having a substantially U-shaped cross section is used as in the above embodiment. Instead of a synthetic resin such as hard vinyl chloride, a lid made of glass fiber reinforced plastic (FRP) may be used. The thermal conductivity of glass fiber reinforced plastic is about 0.2 w / mk, which is almost the same as that of hard vinyl chloride, and is excellent in heat insulation.

Further, as another modified example of the embodiment shown in FIG. 1, the spacer frame member 3 is replaced by a metal frame member 4 made of stainless steel or the like having a substantially U-shaped cross section having a low thermal conductivity.
The frame member 4 made of glass fiber reinforced plastic (FRP) may be used, and the lid portion 5 that fits into the opening provided on the air layer 11 side of the frame member 4 is described in the above two embodiments. The frame member 4 may be made of synthetic resin such as hard vinyl chloride or glass fiber reinforced plastic (FRP).

FIG. 2 shows a spacer frame member 3 in which a lid 5 having a substantially rectangular cross section is provided in the opening of the frame member 4 having a substantially U-shaped cross section. Only a part is embedded and fitted. In this case, if the abutting portion of the lid portion 5 with the frame member 4 is cut out by the thickness of the frame member 4 and a step is provided, the one fitted with the lid portion and the frame member has no step, and the glass has no step. At the time of bonding to the plates 2, 2, there is no step at the contact portion with the glass plates 2, 2, so that the bonding can be performed firmly by the adhesive 8.

Both side surfaces of the spacer frame member 3 including the frame member 4 and the lid portion 5 are adhered to the glass plates 2 and 2 with an adhesive 8, and a sealing material 9 is filled in the outer peripheral portion of the spacer frame member 3. And sealed to obtain a double-glazed glass 1.

A desiccant 7 is sealed in an internal space surrounded by the frame member 4 and the lid 5, and the desiccant is passed through micro holes provided at an appropriate interval in the center of the lid 5. 7 keeps the air in the air layer 11 dry at all times.

FIG. 3 shows a cover member 6 having a substantially U-shaped cross section as the spacer frame member 3 and a cover 6 inside the opening of the frame member 4 having a substantially U-shaped cross section. Only a part of the opening from the side of the opening tip is embedded and fitted.

In this case, the contact portion of the lid 6 with the frame member 4 may be cut out by the thickness of the frame member 4 to provide a step. If the lid 6 is provided with a step, the lid 6 and the frame member 4
There is no step at the fitting portion with the glass plates 2, 2 when the glass plate 2, 2 is adhered, and there is no step at the contact portion with the glass plates 2, 2, so that the adhesive 8 can be firmly bonded.

Both sides of the spacer frame member 3 composed of the frame member 4 and the lid 6 are adhered to the glass plates 2 and 2 with an adhesive 8, and the outer peripheral portion of the spacer frame member 3 is filled with a sealing material 9. And sealed to obtain a double-glazed glass 1.

A desiccant 7 is sealed in an internal space surrounded by the frame member 4 and the lid 6, and the desiccant 7 is passed through micro holes provided at an appropriate interval in the center of the lid 5. 7 keeps the air in the air layer 11 dry at all times.

Further, the embedding of the lid 6 into the opening of the frame member 4 may be entirely, not partially. FIG. 4 shows a spacer frame member 3 in which a lid 6 ′ having a substantially U-shaped cross section is provided inside the opening of the frame member 4 having a substantially U-shaped cross section. Only a part thereof is embedded and fitted from the bottom side, and the contact portion between the lid 6 ′ and the frame member 4 is cut out by the thickness of the frame member 4, and a step is formed in the cross section of the lid 6 ′. May be provided.
If a step is provided on the cover 6 ′, the fitting portion between the cover 6 ′ and the frame member 4 has no step, and there is no step between the contact portions with the glass plates 2, 2, and the adhesive force by the adhesive 8 is reduced. Since it is not damaged, it can be firmly bonded and is preferable.

Further, the embedding of the lid 6 'into the opening of the frame member 4 may be performed not entirely but partially. Both side surfaces of the spacer frame member 3 including the frame member 4 and the lid portion 6 'are adhered to the glass plates 2 and 2 with an adhesive 8, and the outer peripheral portion of the spacer frame member 3 is filled with a sealing material 9 and sealed. Thus, a double-glazed glass 1 was obtained.

A desiccant 7 is sealed in an internal space surrounded by the frame member 4 and the lid 6 ′, and fine holes provided at an appropriate interval in the center of the lid 6 ′ are passed through. The drying agent 7 keeps the air in the air layer 11 dry at all times.

FIG. 5 shows a spacer frame member 3 in which the lid 6 has a substantially U-shaped cross section and a cross section of the frame member 4 'having a substantially U-shaped cross section. It is bent to have a slightly smaller width, and the lid 6 is fitted to the outside of the tip.

Both side surfaces of the spacer frame member 3 composed of the frame member 4 'and the lid 6 are adhered to the glass plates 2 and 2 with an adhesive 8, and a sealing material 9 is filled around the outer periphery of the spacer frame member 3. And sealed to obtain a double-glazed glass 1.

A desiccant 7 is sealed in an internal space surrounded by the frame member 4 'and the lid 6, and dried through fine holes provided at an appropriate interval in the center of the lid 6. The agent 7 keeps the air in the air layer 11 dry at all times.

FIG. 6 shows a spacer frame member 3 which is made of resin and has a lid portion 5 having a rectangular cross-sectional shape and an outer peripheral direction at the bottom center of the frame member 4 ″ having a substantially U-shaped cross section. And a stainless steel frame member 4 "provided with a projection 4a".

Both sides of the spacer frame member 3 composed of the frame member 4 ″ and the lid portion 5 are adhered to the glass plates 2 and 2 with an adhesive 8, and the outer periphery of the spacer frame member 3 is filled with a sealing material 9. And sealed to obtain a double-glazed glass 1.

A desiccant 7 is sealed in an internal space surrounded by the frame member 4 ″ and the lid 5, and dried through fine holes provided at an appropriate interval in the center of the lid 5. The agent 7 keeps the air in the air layer 11 dry at all times.

The shape of the lid 5 is not limited to a rectangular cross section, but may be a substantially U-shaped cross section. The frame member 4 ″ has a projection 4
The reason for providing a "is that the heat transmitted by the sealing material 9 provided on the outer peripheral portion of the frame member 4" is slightly blocked by the projections 4a ", and the conduction of heat transmitted by the sealing material 9 is reduced. This is to improve heat insulation.

Although the frame member 4 "has been described as having one projection 4a", the frame member 4 "may have two or more projections 4a". Also, the one shown in FIG. 7 is a spacer frame. As the material 3, the front ends of both sides of the opening side of the frame member 4, which is made of stainless steel and has a substantially U-shaped cross section, are placed inside grooves formed at both ends of a lid 5 ″ having a rectangular cross section and made of resin. The front end portion bent so as to face is embedded in the groove of the lid 5 ″.

Both sides of the spacer frame member 3 composed of the frame member 4 and the lid portion 5 ″ are adhered to the glass plates 2, 2 with an adhesive 8, and the outer peripheral portion of the spacer frame member 3 is filled with a sealing material 9. And sealed to obtain a double-glazed glass 1.

If a desiccant 7 is sealed in an internal space surrounded by the frame member 4 and the lid 5 ", the lid 5" made of rigid polyurethane foam or polystyrene foam is foamed. It is not usually necessary to provide microscopic holes for moisture absorption in the lid part, but if necessary due to the degree of foaming, a microscopic hole is provided in the center of the lid part and the drying agent 7 Air is kept dry at all times.

FIG. 8 shows a spacer frame member 3 made of glass fiber reinforced plastic and formed into a frame by integrating the lid and the frame member without separating them. Both side surfaces of the spacer frame member 3 were adhered to the glass plates 2 and 2 with an adhesive 8, and the outer periphery of the spacer frame member 3 was filled with a sealing material 9 and sealed to obtain a double-layer glass.

A desiccant 7 is sealed in the internal space of the spacer frame member 3 in advance, and is passed through the fine holes provided at an appropriate interval in the center of the air layer side, so that the air layer 11 is
The air inside can always be kept dry.

Since the material of the spacer frame member 3 is made of glass fiber reinforced plastic having a low thermal conductivity, the heat insulating property near the spacer of the double glazing 1 using this spacer is lower than that of a conventional metal such as aluminum. It is excellent and easy to mold.

The various embodiments have been described above.
In any case, the outer peripheral edge and the end face of the double-glazed glass 1 to which the spacers 3 are bonded are covered with an adhesive tape or the like wider than the thickness of the double-glazed glass 1 over the entire periphery and bonded so as to cover. If this is the case, it will be an edge protection.

Although the preferred embodiment has been described above, the present invention is not limited to this, and various applications can be considered. The glass sheet 2 constituting the double-glazed glass 1 may be a raw sheet glass, a semi-tempered glass, a tempered glass sheet, a netted glass, a lined glass, or a laminated glass sheet obtained by combining the above glass sheets and bonding them with PVB or EVA. In addition, those in which a scattering prevention film is adhered to the glass plate surface are also included.

Further, if the glass sheet 2 on the outdoor side of the double-glazed glass 1 is made of a heat ray reflection glass in which a heat ray reflection film, an ultraviolet ray reflection film or the like is provided on the surface of the glass sheet by coating or vacuum evaporation,
The energy saving effect will be further enhanced.

The lids 5, 5 ', 5 "and 6 are made of a synthetic resin such as an acrylic resin, an epoxy resin, a polystyrene resin, a polypropylene resin or a phenol resin having a low thermal conductivity. Or a glass fiber reinforced plastic (FRP), rigid polyurethane foam, or polystyrene foam.

Further, the material of the frame members 4, 4 ', 4 "is desirably made of metal such as stainless steel or FRP. However, there are problems such as weight and cost of the material. It is also possible to use metals such as chromium, nickel, tin, titanium and lead, or alloys thereof.

Furthermore, the frame members 4, 4 ', 4 "have been described as having a substantially U-shaped cross section, but it goes without saying that the frame members 4, 4', 4" also include a hexagonal shape in which a square corner is cut. As an adhesive 8 as a seal, butyl rubber or the like was used, and as a seal material 9 as a secondary seal, a polysulfide-based sealing material (polysulfide-based synthetic rubber) or the like was used.

[0053]

According to the present invention, a spacer made of a rigid metal such as stainless steel having a low thermal conductivity is used as a spacer used as a spacing member for a double-glazed glass, and a spacer having a further thermal conductivity is provided on the air layer side. Since the lid is made of a low resin or the like and fitted, it is excellent in heat insulation even in the periphery of the spacer, excellent in preventing dew condensation on the periphery of the multi-layer glass, and has a high energy saving effect.

Further, it is possible to realize a low-cost double-layer glass with a simple structure.

[Brief description of the drawings]

FIG. 1 is a sectional view of a double glazing according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a double glazing according to another embodiment of the present invention.

FIG. 3 is a sectional view of a double glazing according to another embodiment of the present invention.

FIG. 4 is a cross-sectional view of a double glazing according to another embodiment of the present invention.

FIG. 5 is a sectional view of a double glazing according to another embodiment of the present invention.

FIG. 6 is a sectional view of a double glazing according to another embodiment of the present invention.

FIG. 7 is a cross-sectional view of a double glazing according to another embodiment of the present invention.

FIG. 8 is a sectional view of a double glazing according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Double glass 2 Glass plate 3 Spacer 4, 4 ', 4 "Frame member 5, 5', 5" Lid 6, 6 'Lid (U-shaped cross section) 7 Desiccant 8 Adhesive 9 Sealing material 10 Adhesion tape

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Yoshio Asai 1510 Oguchicho, Matsusaka-shi, Mie Central Glass Co., Ltd. Production Technology Laboratory F-term (reference) 2E016 AA01 AA04 AA05 BA01 CA01 CB01 CC02 EA00 EA05 FA01 FA02 4G061 AA09 AA25 BA01 BA02 BA10 CB02 CB14 CB16 CD02 CD22

Claims (12)

[Claims] 1. A double-layer glass which is bonded to the outer periphery of two opposing glass plates via a spacer frame material in which a desiccant is sealed and then sealed with a sealing material, wherein the spacer frame material has a thermal conductivity. A double glazing comprising: a frame member having a low U-shaped cross section; and a resin lid provided in an opening provided on the air layer side of the frame member. 2. A method according to claim 1, wherein the lid has a substantially rectangular cross section and a part or the whole of the lid is embedded and fitted in an opening of the frame member having a substantially U-shaped cross section. The double glazing according to claim 1. 3. A cross-sectional shape of said lid portion is substantially U-shaped, and a part or all of said lid portion is embedded and fitted into an opening of said frame member having a substantially U-shaped cross-section. The double-glazed glass according to claim 1. 4. The frame member having a substantially U-shaped cross section and a substantially U-shaped cross section is bent at an opening-side front end portion to have a slightly smaller width, and the lid portion is provided outside the front end portion. The double-glazed glass according to claim 1, wherein the glass is fitted. 5. The double glazing according to claim 1, wherein one or more projections are provided in the center of the bottom of the frame member in the outer peripheral direction. 6. An air layer side portion of a lid portion fitted to an opening portion of a frame member having a substantially U-shaped cross section is brought into contact with two glass plates,
The multilayer glass according to any one of claims 1 to 5, wherein a frame member is interposed between the frame member side portion of the lid and the glass plate. 7. A material according to claim 1, wherein said lid is made of a synthetic resin such as an acrylic resin, an epoxy resin, a polystyrene resin, a polypropylene resin or a phenol resin. The double-glazed glass according to the above. 8. The double glazing according to claim 1, wherein said lid is made of FRP, rigid polyurethane foam, or polystyrene foam. 9. The double glazing according to claim 1, wherein the frame member having a substantially U-shaped cross section is made of stainless steel. 10. The double glazing according to claim 1, wherein said frame member having a substantially U-shaped cross section is made of FRP. 11. The method according to claim 11, wherein the opening-side end of the frame member having a substantially U-shaped cross section is bent inward, and the notch provided on the side of the resin-made lid is inserted into the notch to clamp the lid. The double-glazed glass according to claim 1, wherein: 12. The spacer frame member is made of FRP in which a frame member and a lid are integrated.
The double-glazed glass according to the above.