JPH0519507Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to double-glazed glass applied to windows of buildings, etc., and contains a moisture absorbent to prevent condensation of the air in the interior space. , a multi-layer structure equipped with a means to suppress the deflection of the glass plate due to changes in the air pressure in the internal space due to changes in temperature, adsorption and desorption of air components (oxygen, nitrogen) in moisture absorbers, or changes in external pressure. It's about glass.

[Prior Art] The above-mentioned deflection of the glass plate distorts the visual image, fatigues and deteriorates the sealant layer that adheres and seals the glass plate and the spacing member, and impairs the sealing performance of the internal space. Or, in extreme cases, the glass plate may be damaged.

In order to eliminate this obstacle, for example,
As a prior art, No. 96380 describes the provision of a small diameter tube that communicates the internal space of double-glazed glass containing a moisture absorbent with the external space, and in order to maintain the anti-fogging function of double-glazed glass to some extent. states that it is known to suppress moisture ingress by using very small diameter and long tubes.

This publication discloses that in order to suppress the bending of the plate glass when using double-glazed glass, a tube is provided that communicates the interior space with the exterior space, and a moisture absorbent is stored in the tube to further improve the anti-fogging function. is advocating.

[Problems to be solved by the invention] Even in the above-mentioned known means, the adsorption capacity of the moisture absorbent decreases with time, and sooner or later it loses its function. Especially in humid climates like ours, it loses its anti-fog function within a few years. Furthermore, although the communicating tube is disposed at the end surface of the double-glazed glass, there is a problem in that the end surface of the double-glazed glass is covered by the window frame, and the shape and size of the communicating tube is extremely limited.

The purpose of the present invention is to solve the above-mentioned problems and provide a unique means for maintaining the anti-fogging function over a long period of time while suppressing the deflection of plate glass due to changes in temperature and external pressure.

[Means for Solving the Problems] The present invention provides a double-glazed glass in which a spacing member containing an adsorbent is provided on the periphery of the opposing surfaces of plate glass facing each other at a distance to form an internal space isolated from an external space. wherein the spacing member is provided so as to protrude from at least one region of the plate glass, or by cutting a notch in the plate glass, at least a part of the indoor side side of the spacing member is exposed to the outside space, A communication pipe is provided at a suitable location in the part, and one end of a cylindrical body containing a moisture absorbent is detachably connected to the tip of the pipe, and a pore communicating with the external space is provided at the other end of the cylindrical body, so that both the internal and external spaces can be connected. and a moisture absorbent exchange opening and a sealing lid for the opening are provided at appropriate locations on the outer periphery of the spacing member or on the indoor side exposed to the external space.

The present invention will be described in detail below based on specific examples.

In Fig. 1, 1 and 1' are two glass plates forming double-glazed glass, 1 of which is a glass plate placed on the indoor side, and 2 is a spacing member containing a moisture absorbent inside. 1, 1' and the spacing member 2 form an internal space in which dry air is sealed and isolated from the external space, and the spacing member 2
By providing a hole (not shown) in the side that is in contact with the internal space, the air in the internal space comes into contact with the moisture absorbent and is maintained in a dry state.

An opening 4 surrounded by a chain line in the figure and a sealing lid 5 for sealing the opening 4 are provided on the outer periphery 3 of the spacing member 2, so that the moisture absorbent inside the spacing member 2 can be replaced. The sealing lid 5 is fixed to the outer side 3 of the spacing member 2 with screws 6. On the other hand, by cutting a notch in the plate glass 1, the side edges 20 of the spacing member 2 are
A part of the is exposed to the external space side, and the exposed side 21
One end of the communicating tube 7 is inserted into the tube, and the other end of the communicating tube 7 is connected to one end of a cylindrical body 15 for storing a moisture absorbent (not shown), and a pore 16 is provided in the other end of the cylindrical body 15. This allows both the inner and outer spaces to communicate. Communication pipe 7
and the pore 16 has a small diameter (for example, an inner diameter of 0.1 to 1 mm)
Furthermore, the communication pipe 7 is long (for example, length 5~
100 cm), it resists the intrusion of moisture-containing outside air, and thus suppresses a decrease in the adsorption capacity of the moisture absorbent within the cylindrical body 15 and the spacer 2. Of course, the communicating tube 7 may extend linearly, but it may also have a spiral or other bent shape.

Therefore, the difference in air pressure between the inner and outer spaces due to changes in temperature, changes in outside pressure, etc. is balanced by providing the communicating tube and cylindrical body, and the deflection of the plate glass is suppressed, and the outside air containing moisture is When entering the internal space through the communicating pipe or the cylindrical body, these communicating pipes resist the intrusion and suppress the amount of intrusion, thus increasing the adsorption capacity of the moisture absorbent of the spacing member or the cylindrical body. If the deterioration is suppressed and the adsorption capacity of the hygroscopic agent further decreases, remove the sealing lid from the outer side of the spacing member, remove the hygroscopic agent inside and replace it with a new hygroscopic agent, or replace it with a new hygroscopic agent. By providing an opening and a sealing lid similar to the spacing member in advance, the moisture absorbent inside the cylindrical body can be replaced, or the cylindrical body can be replaced with a new one containing a new moisture absorbent. It can be kept in a dry state and the anti-fog function can be maintained.

Although not shown, if possible, a rod-shaped moisture absorbent is housed inside the spacing member 2 or further inside the cylindrical body 15, so that the moisture absorbent can be replaced easily and quickly, unlike powder-like moisture absorbent. I can do it. Further, instead of the rod-shaped moisture absorbent, a powdery moisture absorbent may be stored in an air-permeable pouch.

Furthermore, the moisture absorbing agent in the spacing member and the cylindrical body can be regenerated by desorbing moisture by heating, so that it can be used repeatedly.

In addition, the communicating tube extends beyond the glass plate from the side of the spacing member, and its size, length, etc. can be set freely.In addition, the cylindrical body can be placed near the double-glazed glass or at a distance from it as appropriate. The cylindrical body can be easily replaced, or the moisture absorbent inside the cylindrical body can be easily replaced.

Very generally, the spacer clamping portion of the double-glazed glass is hidden by a window frame body having an abbreviated U-shape in cross section. FIG. 2 is a schematic partial front view (indoor side) showing the relationship between the double-glazed glass and the window frame according to the embodiment shown in FIG.
Reference numeral 8 represents a window frame body, and reference numerals 19 and 19 represent edge portions of double-glazed glass.

The spacer 2 portion is substantially hidden within the window frame body 18. A notch is cut in advance at an appropriate location of the window frame body 18 to expose the side 20 of the spacer 2 and to extend the communication pipe 7 attached to the exposed portion 21.
15 is a cylindrical body (having pores at the positions shown in 16)
In particular, the cylindrical body 15 is arranged appropriately so as not to spoil the appearance, but in this figure, the window frame body 18 is
An example of placement along the lower side of the is shown. Note that the notched recessed portion of the window frame body 18 is filled with a sealant.

FIG. 3 is a partial cross-sectional view showing yet another embodiment, in which plate glass 1 (indoor side) and 1' having long and short sides, respectively, are used, and a moisture absorbent (not shown) is used.
The side 21 of the spacing member 2 which houses the spacing member 2 facing one of the plate glasses 1 protrudes from the area of the plate glass 1, and an opening 4 and a sealing lid 5 are provided at appropriate places 21 on the protruding side, and a sealing lid is provided. 5 has a communicating tube 7 inserted therethrough. Note that the cylindrical body is not shown in this figure.

This case has the advantage that the spacer 2 has a large internal volume and can accommodate a large amount of moisture absorbent, and since the opening 4 is also large, the moisture absorbent can be replaced quickly and easily.

As described above, the present invention can be suitably adopted not only for ordinary double-glazed glass, but also for cases where the space between the panes is large, such as 20 to 30 mm, and a functional material such as a blind is housed between the glass sheets.

[Effects of the invention] According to the invention, the anti-fogging function of the double-glazed glass is not impaired, and on the other hand, the deflection of the plate glass due to changes in temperature, external pressure, etc. is suppressed. It has a unique structure in which a cylindrical body containing a hygroscopic agent is connected to the cylindrical body, and the hygroscopic agent can be exchanged, thereby achieving an outstanding practical effect of being able to be used stably over a long period of time.

[Brief explanation of the drawing]

Fig. 1 is a partial perspective view showing one embodiment of the present invention, Fig. 2 is a schematic partial front view showing the relationship between the double-glazed glass shown in Fig. 1 and the window frame body, and Fig. 3 is another embodiment. FIG. 1, 1'... plate glass, 2... spacing member,
4...Opening, 5...Sealing lid, 7...Communication pipe, 15
... Cylindrical body, 16 ... Pore, 21 ... Exposed side.

Claims (1)

[Claims for Utility Model Registration] 1) A double-glazed glass in which an inner space isolated from an outer space is formed by providing a spacing member containing an adsorbent at the periphery of the opposing surfaces of plate glasses that face each other with a gap between them. By providing the spacing member so as to protrude from at least one area of the plate glass, or by cutting a notch in the plate glass, at least a part of the indoor side side of the spacing member is exposed to the external space, and the part is placed in the appropriate place. Provide a communication pipe,
One end of a cylindrical body containing a moisture absorbent is removably connected to the tip of the cylindrical body, and a pore communicating with the external space is provided at the other end of the cylindrical body, thereby communicating both the inside and outside spaces. A double-glazed glass characterized in that an opening for replacing a moisture absorbent and a sealing lid for the opening are provided at appropriate positions on the outside periphery or on the indoor side exposed to the external space. 2) Utility model registration claim 1, characterized in that a moisture absorbent exchange opening and a sealing lid are provided on the indoor side side exposed to the external space of the spacing member, and a communicating pipe is provided in the sealing lid. Double glazing as described.