JPH0261596B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of the Invention The present invention comprises a multilayer transparent plate whose space is filled with an insulating gas having a specific gravity higher than that of air, and a metal frame surrounding the peripheral edge of the multilayer transparent plate. Regarding transparent structures, it is applied to doors and windows of houses, warehouses, refrigerators, and low-temperature storage cases.

(B) Background art and problems thereof A multilayer transparent plate includes at least two transparent plates that maintain a predetermined distance, and a frame member that is interposed between the peripheral edges of the transparent plates to maintain the distance. It is constructed by airtightly bonding two layers together, and its use is rapidly expanding because it has good insulation properties and is resistant to condensation.

In addition, for the purpose of increasing the heat insulation properties of the multilayer transparent plate or increasing the sound insulation properties, it is possible to fill the internal space with an insulating gas consisting of a gas with a lower thermal conductivity than air or a gas with a higher specific gravity than air. Layered transparent plates are now on sale.

These multi-layer transparent plates either evacuate the air in the space and supply insulating gas, or after the gas supply process in which air is exhausted along with the supply of insulating gas, the passages are closed with a cap. If the seal is insufficient, gas will gradually leak from the passage.
The insulation effect was reduced.

(c) Purpose of the Invention The object of the present invention is to prevent the leakage of the insulating gas from the passage after the space is filled with the insulating gas.

(d) Summary of the invention At least two transparent plates facing each other with a gap therebetween, at least one frame member interposed between peripheral edges of opposing surfaces of the transparent plates, and both transparent plates. and an adhesive that interconnects the frame members, and a seal that is filled in an annular groove formed between the inner peripheral end surfaces of both transparent plates and the outer surface of the frame member and that adheres to the inner peripheral end surfaces and the outer surface. In a multilayer transparent plate composed of a member, at least one layer of space defined by the connection of both the transparent plates and the frame member, and an insulating gas having a specific gravity higher than that of air sealed in this space, the frame member a passage formed in at least one passageway for communicating the space with the outside and supplying insulating gas to the space; and a deleted portion obtained by removing a part of the sealing member facing the passageway. , an elastic cap that can be pressed and deformed to close the passage and the removed portion; and a cap that is fitted into the peripheral edge of the multilayer transparent plate, covers the peripheral end surfaces of both transparent plates and the sealing member, and presses the elastic cap. A transparent structure with a ring-shaped metal frame.

(E) Embodiments of the present invention The embodiments of the present invention will be described below. Reference numeral 1 shown in Figs. It is a multi-layer transparent plate, and includes two rectangular transparent plates 2A and 2B made of glass, and four spacers connected in a frame shape, interposed between the peripheral end surfaces of the opposing surfaces of both transparent plates. 4A, 4B, 4C, and a frame member 3 mainly composed of 4D, and the inside surrounded by both the transparent plates and the frame member has a specific gravity higher than that of air.
A space 5 is formed in which a heat insulating gas G such as Ar or SF ₆ is filled. 6A and 6B are adhesives such as double-sided adhesive tapes for mutually bonding both the transparent plates 2A and 2B and the frame member 3, and 7 is an annular shape formed by the peripheral end surfaces of both the transparent plates and the outer surface of the frame member. filled into the grooves of
This is a sealing member made of a resin such as thiocol that adheres to each of the surfaces to keep the space airtight. Numeral 8 is a granular desiccant filled in a large amount in each of the spacers, and is made of a mixture of, for example, quick-drying silica gel with a fast moisture-absorbing effect and slow-drying moriquila sieves with a slow moisture-absorbing effect.

Each of the spacers is formed into a rectangular cylindrical shape with a hollow part 9 by extrusion molding of aluminum or the like or by bending a thin metal plate, and each of the spacers has a hollow part 9 in the length direction on the inner surface facing the space. A ventilation passage 10 consisting of a long and narrow groove communicating with the space 5 and the space 5 is formed. 12A, 12B, 12C, 1
2D is two legs 12l and 12m that intersect at approximately right angles.
A corner connector made of synthetic resin with
Each spacer 4A, 4B, 4C, 4 arranged in a frame shape
The frame member 3 is assembled by inserting one leg 12l into one of the adjacent and orthogonal hollow portions 9 of D and the other leg 12m into the other to connect the spacers to each other. . As shown in FIG. 3, the legs are formed in a shape capable of imparting elasticity such as a wave shape that is pressed and deformed within the hollow portion 9 when the spacers 4A and 4B are connected.

12n is each corner connector 12A, 12B, 1
The bases 12i and 12J formed between the legs 12l and 12m of 2C and 12D are abutment surfaces that are formed by refining the boundaries between the base and the legs and face the hollow part 9, and each of the corner connectors leg 12l,1
2m is inserted into the hollow portion 9 of each of the spacers 4A, 4B, 4C, and 4D, both ends of each of the spacers are brought into contact with opposing contact surfaces, and the circumferential surface of the base 12n and each of the spacers is flush with the base 12
n does not overlap each of the spacers, and its outer surface is exposed to the outside. 12h, 12h are corner connectors 12A, 12 for supplying the insulating gas G to the space 5.
A passage formed through the base 12n of B communicates the space 5 with the outside, and when the insulating gas G is supplied, one of them serves as a supply path for the insulating gas and the other serves as an air discharge path. Elastic caps 7' and 7' are made of rubber or the like that can be deformed by pressure, and are fitted into the removed portion 7A of the sealing member 7, and adhered to the spacer 4A and the sealing member 7 with an adhesive applied to the surface, thereby sealing the passage. 12h and 12h are closed to maintain the space 5 in a sealed state. Reference numeral 15 denotes a metal frame having a U-shaped cross section, which is fitted into the peripheral edge of the multilayer transparent plate 1, and presses and deforms the elastic cap 7' as shown in FIG. still,
The periphery of one end of the elastic cap 7', which has been press-deformed, expands in the periphery direction and becomes flat.

The multilayer transparent plate 1 is manufactured by the following manufacturing method.

Each corner connector 12A, 12B, 12C, 12
After assembling the frame member 3 by interconnecting the spacers 4A, 4B, 4C, and 4D with D, an adhesive 6 made of double-sided adhesive tape is applied to the entire circumference of both sides of the frame member.
A and 6B are pasted, and then, as shown in FIG. 5, the transparent plate is attached to an assembly jig 16 consisting of a rectangular substrate 17 and eight guides 18A to 18H erected on the outer peripheral surface of this substrate. 2A, frame member 3, and transparent plate 2B, press the transparent plate 2B to separate both transparent plates 2.
A, 2B and the frame member 3 are interconnected with adhesives 6A, 6B to form a space 5. Next, a resin-based sealing member 7 such as thiocol is filled into an annular groove formed by the inner circumferential end surfaces of both transparent plates and the outer surface of the frame member except for the passages 12h and 12h of the frame member 3. A passageway 12 is attached to each of the surfaces.
A semi-finished product is obtained in which a deleted portion 7A is formed except around h and 12h to maintain the airtightness of the space 5. Next, a plurality of semi-finished products are erected so that both passages 12h, 12h are located at the upper part of the frame member 3, and the supply nozzle 14 of the gas supply machine is passed through the passage 12h of the corner connector 12A. The tip is positioned below the space 5 as shown in FIG. As the insulating gas G, which has a higher specific gravity than air, is injected, the air A in the space 5 is gradually pushed upward and is discharged to the outside from the passage 12h of the corner connector 12B as shown by the arrows in FIGS. 6 and 7. , is replaced by insulating gas G. After filling with the insulating gas G, the supply nozzle 14 is pulled out from the space 5 and the passage 12h, and both passages 12
By keeping the passages 12h and 12h in the upper position and blocking both passages 12h and 12h with elastic caps 7' and 7' that can be deformed by pressing as shown in FIG. The multilayer transparent plate 1 is completed.

The multilayer transparent plate 1 is attached with a metal frame 15 to form a see-through structure, and further has a handle 15A attached thereto to form a transparent door 40 as shown in FIG. In this door, the passages 12h, 12h are located at the upper part of the frame member 3,
That is, it is disposed in the front opening of the refrigerator 41 so as to be openable and closable so as to be located above the insulating gas G, which has a higher specific gravity than air.

Therefore, according to the invention, the passages 12h, 12h
The elastic caps 7', 7' that close the removed portions 7A have a sealing function added by deformation by pressing the metal frame 15 in addition to their own sealing function, thereby further improving the airtightness of the passages 12h, 12h. That is, even if a slight sealing failure occurs when the passages 12h, 12h are closed with the elastic caps 7', 7', this sealing failure can be eliminated as the metal frame 15 is fitted. Due to the fact that the transparent layer 1 is covered with the peripheral end surface and the sealing member 7, if it is found that there is a shortage of the insulating gas G during use of the see-through structure after filling with the insulating gas G, the metal frame 15 and the elastic When the cap 7' is removed, the removed portion 7A communicates with the outside, so that the insulating gas G that is insufficient can be easily injected from the passages 12h, 12h.

(f) Effects of the present invention According to the present invention described above, the elastic cap that can be pressed and deformed is passed through the deleted portion to close the passage, and the metal frame that covers the peripheral edge of the multilayer transparent plate is also pressed and deformed. Relatedly, the sealing effect of the elastic cap can be improved by fitting the metal frame to the peripheral edge of the multilayer transparent plate, preventing leakage of insulating gas from the passage, and making it easier to fill with insulating gas. Later, if it is found that there is a lack of insulating gas during use of the see-through structure, the metal frame and elastic cap will be removed, and the space will communicate with the outside through the removed part and the passage, so that the gas shortage will be removed from the passage. This has the effect that it is possible to easily inject enough insulating gas, and it is also easy to replenish the shortage after filling the insulating gas.

[Brief explanation of drawings]

The drawings show an embodiment of the transparent structure of the present invention, and the first
The figure is a perspective view of a transparent structure with a part of the metal frame cut away.
Figure 2 is a sectional view taken along line A-A' in Figure 1, Figure 3 is a sectional view taken along line B-B' in Figure 1, Figure 4 is a perspective view of a corner connector, and Figure 5 is an assembly process for a multilayer transparent plate. Figure 6 is an exploded perspective view showing the process of supplying insulating gas to a multilayer transparent plate, Figure 7 is a sectional view taken along line C-C' in Figure 6, and Figure 8 is a transparent structure used as a door. It is a perspective view of a refrigerator. 1... Multilayer transparent plate, 2A, 2B... Transparent plate, 3... Frame member, 5... Space, 6A, 6B... Adhesive, 7... Seal member, 7', 7'... Elastic cap, 7A... Deleted part, 12h , 12h...Passway, 15...Metal frame, G...
Insulating gas.

Claims (1)

[Claims] 1 At least two transparent plates facing each other with a gap between them, at least one frame member interposed between the peripheral edges of opposing surfaces of the transparent plates, and both transparent plates and the frame member mutually a sealing member that is filled in an annular groove formed between the inner peripheral end surfaces of the transparent plates and the outer surface of the frame member and adheres to the inner peripheral end surfaces and the outer surface of the frame member; In a multilayer transparent plate composed of at least one layer of space defined by the connection of a plate and a frame member, and an insulating gas sealed in this space and having a higher specific gravity than air, at least one layer is formed on the frame member, A passage for communicating the space with the outside and supplying insulating gas to the space, a deleted part obtained by removing a part of the sealing member facing the passage, and the passage and the deleted part. an elastic cap that can be pressed and deformed to close the cap, and an annular metal frame that is fitted into the peripheral edge of the multilayer transparent plate, covers the peripheral end surfaces of both transparent plates and the sealing member, and presses the elastic cap. A see-through structure is provided.