JP2001316138A - Glass panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glass panel with improved high impact resistance and low resonance at reasonable cost and weight. SOLUTION: The panel consists of an outdoor glass plate 6, an indoor glass plate 7 which is thinner than the plate 6 and a vacuum space V. A large number of spacers 8 are distributed in the space V. A fringe of the panel is sealed with a sealing part 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass panel having a space depressurized near a vacuum between a pair of glass sheets, and more particularly to a technique for improving characteristics such as impact resistance.

[0002]

2. Description of the Related Art The above-mentioned glass panel has a decompression layer close to a vacuum so that it can exhibit excellent sound insulation, heat insulation, dew-proofing properties, etc. It is increasing. And the conventional glass panel is disclosed in
As disclosed in Japanese Patent Application Laid-Open No. 1-310436, in consideration of productivity, a pair of plate glasses are formed to have the same thickness.

[0003]

With the widespread use of the glass panel, in a factory, a park, an airport, or an area with severe environmental conditions such as close to a viaduct, a material having higher strength and sound insulation is required. I have. In addition, strong impact force or wind pressure may act from outside due to a typhoon, impact sound, or the like, and the glass panel may vibrate. However, since the inner and outer glass sheets have the same thickness, in some cases, the glass panel may resonate and hardly stop the vibration. For this reason, rubbing between the spacer in the gap and the sheet glass may be continued, thereby adversely affecting the durability.

In order to improve the performance of the glass panel, such as resistance to impact and difficulty in resonance, it is conceivable to first increase the thickness of the pair of plate glasses. However, in this method, the thickness of the entire glass panel is clearly increased, so that the cost and weight are increased unnecessarily, it is not possible to attach to the existing window sash, or the resonance frequency is increased. Although it can be reduced, it can be predicted that it will not be eliminated, so there is room for further improvement.

An object of the present invention is to provide a glass panel having improved impact resistance and difficulty in resonance without effectively increasing the cost and weight.

[0006]

[Structure] According to the structure of claim 1, as shown in FIG. 3, a large number of spacers 8 are interposed between a pair of glass sheets 6 and 7 whose sheet surfaces are opposed to each other. In a glass panel in which an outer peripheral sealing portion 9 is provided between the outer peripheral portions of the glass sheets 6 and 7 to form a depressurized gap V between the pair of glass sheets 6 and 7, It is characterized in that the outer glass sheet 6 disposed on the outdoor side among the glass sheets 6 and 7 is thicker than the inner glass sheet 7 disposed on the indoor side.

[0007] As described above, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.

According to the structure of the first aspect, the outer plate glass directly exposed to the impact force and wind pressure from the outside is made thicker than the inner plate glass, so that the resistance to the shock and wind pressure is increased as compared with the prior art. It becomes superior in strength. Since the inner and outer sheet glasses have different thicknesses, the natural frequencies of the two sheet glasses are different from each other, so that an action of attenuating and converging the vibration generated in one of the sheet glasses comes to occur. It hardly occurs.

In addition, the outer plate glass may bend between adjacent spacers due to the influence of the atmospheric pressure, and the flatness may be impaired, thereby deteriorating (distorting) the reflected image. The inconvenience can be suppressed or eliminated. In addition, since only one glass sheet is made thicker, there is no unnecessary increase in weight and cost compared to the method of thickening both the inside and outside glass sheets, and the inconvenience rate that cannot be attached to the existing window sash is reduced. You can also.

[Effect] As a result, the strength and durability are improved while suppressing an increase in cost and weight by contriving to increase the thickness of only the outer one of the pair of glass sheets. The total performance of the panel was further improved.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a sliding sash window W for a house. This sash window W is a frame T of a house.
, An outer glass window 2 and an indoor glass window 3. Double glass windows 2,3
In the first embodiment, a glass panel G having a multilayer structure is fitted in the window frame 4 and a pair of rollers 5 and 5 which can roll on the rail portion 1a of the outer frame 1 are provided in the lower portion 4a of the window frame. It is general.

The glass panel G is composed of a pair of glass sheets 6,7.
This is a so-called “vacuum insulated glass” in which a gap close to a vacuum state is provided therebetween. The structure is described in detail. As shown in FIGS. 2 and 3, a glass panel G has a large number of spacers 8 between a pair of glass sheets 6 and 7 whose plate surfaces are opposed to each other.
And an outer peripheral sealing portion 9 is provided between the outer peripheral portions of the plate glasses 6 and 7 to form a gap V that is reduced in pressure near a vacuum between the pair of plate glasses 6 and 7. I have.

The gap V is, for example, 1.33 Pa (0.3 mm).
(Equivalent to 01 Torr) or less. Therefore, one plate glass 7 is provided with a suction hole 10 for suction and pressure reduction, and the suction hole 10 is sealed after the suction operation.

In the pair of glass sheets 6, 7, the thickness d1 of the outer glass sheet 6 arranged on the outdoor side (outdoor side) is larger than the thickness d2 of the inner glass sheet 7 arranged on the indoor side (indoor side). (D1> d2). That is, the inner plate glass 7
Is a float glass sheet having a general thickness of about 2.65 mm to 3.2 mm, and the thickness d1 of the outer glass sheet 6 is 0.2 to 2 mm thicker than d2. In addition, as for the sheet glass, in addition to the float sheet glass, various kinds of sheet glass such as a mold sheet glass, a ground glass, a meshed glass, a tempered glass, a sheet glass having a heat ray absorbing function, an ultraviolet ray absorbing function, a low radiation function, a heat ray radiation function, and the like are used. It is possible.

The spacer 8 has a compressive strength of 4.9 × (10
Of the material) Pa or more, for example, stainless steel (SU
Using S304), a diameter of 0.3 mm to 1.0 mm
The height is preferably a columnar shape having a height of about 0.15 mm to 1.0 mm, and the interval between the spacers 8 is preferably about 20 mm. The material of the spacer 8 is not particularly limited to stainless steel. For example, the spacer 8 can be formed of various materials such as Inconel 718 and other metal materials, quartz glass, and ceramics. Not only the shape but also a prism shape can be used. Also, the spacing between the spacers 8 can be changed as appropriate.

The outer peripheral sealing portion 9 is formed of a low melting point glass such as solder glass, and seals between the outer peripheral edges of the two glass plates 6 and 7 so as to maintain the internal gap V in a sealed state. It is configured. Note that, of the two glass sheets 6 and 7, the inner glass sheet 7 has a slightly smaller area than the outer glass sheet 6, so that the outer peripheral edge of the inner glass sheet 7 protrudes from the outer peripheral edge of the outer glass sheet 6, Outer periphery sealing part 9
Is formed, a sealing material such as solder glass is placed on the protruding portion, so that the gap V formed by the outer peripheral sealing portion 9 is formed.
It is configured so that the sealing operation of the can be performed efficiently and reliably. Incidentally, both the glass sheets 6 and 7 may have the same size.

In this glass panel G, the sheet glass 6 on the outdoor side is made thicker than the sheet glass 7 on the indoor side, so that a stronger wind pressure due to a typhoon or the like, While being able to withstand intense impact noise and noise without difficulty, the increase in weight and cost can be relatively suppressed.

For reference, FIG. 4 shows an acoustic characteristic graph showing the transmission loss of each frequency when a sound source (noise source) is placed outside the glass panel G and the measuring unit is placed inside the room. In the graph of FIG. 4, the line a is 3 mm (3 + 3) for both the inner and outer sheet glass thicknesses, and the line b is
The case where the thickness of the inner plate glass is 3 mm and the thickness of the outer plate glass is 4 mm (3 + 4) is shown.
This graph also shows that those having an increased thickness of the outer sheet glass have better sound insulation effects.

[Brief description of the drawings]

FIG. 1 is a front view showing a sash window.

FIG. 2 is a partially broken perspective view showing the structure of a glass panel.

FIG. 3 is a sectional view of a glass panel.

FIG. 4 is a diagram showing an acoustic characteristic graph of a glass panel.

[Explanation of symbols]

 6 Outer sheet glass 7 Inner sheet glass 8 Spacer 9 Outer periphery sealed part V Void

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tsuguhisa Takamoto 3-1-1, Doshomachi, Chuo-ku, Osaka-shi, Osaka Inside Nippon Sheet Glass Co., Ltd. (72) Tomoken Miura Doshomachi, Chuo-ku, Osaka-shi, Osaka 3-5-11 Nippon Sheet Glass Co., Ltd. F-term (reference) 2E016 AA01 BA01 BA02 CA01 CB01 CC02 EA01 FA00 4G061 AA01 AA20 BA01 CD21 DA30

Claims (1)

[Claims] 1. A large number of spacers are interposed between a pair of plate glasses having plate surfaces opposed to each other, and an outer peripheral sealing portion is provided between the outer peripheral portions of these plate glasses to form a space between the pair of plate glasses. A glass panel in which a depressurized gap is formed, wherein an outer plate glass disposed on the outdoor side of the pair of plate glasses is thicker than an inner plate glass disposed on the indoor side.