JP2001151538A - Spacer member for glass panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spacer member for a glass panel, the shock-absorbing capability of which can be maintained by inhibiting deterioration of a flexible constituent material of the member and the spacer function of which is prevented from being reduced and also which has good durability. SOLUTION: The manufacturing process of a glass panel for which this spacer member K is used, comprises: placing a first plate glass 1A and a second plate glass 1B so that their plate surfaces are opposite to each other, to form a space 4 between the first plate glass 1A and the second plate glass 1B; sealing the space 4 along the outer periphery of each of the first plate glass 1A and the second plate glass 1B; and maintaining the inside of the space 4 under a reduced pressure; wherein in order to maintain the inside of the space 4 under a reduced pressure, the spacer member K is interposed between the first plate glass 1A and the second plate glass 1B. The spacer member K is formed by dispersing a flexible constituent material 14 and a rigid constituent material 13 into each other so as to effect an interpenetrating state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for forming a gap between a first sheet glass and a second sheet glass having sheet surfaces opposed to each other, and forming the gap between the first sheet glass and the second sheet glass. The first glass sheet and the second glass sheet are sealed along the outer peripheral edge to maintain the inside of the cavity in a reduced pressure state.
The present invention relates to a spacing member interposed between a sheet glass.

[0002]

2. Description of the Related Art Conventionally, as this type of glass panel spacing member K, as shown in FIG.
A soft layer 19 made of the soft material 14 is formed at an interface portion in contact with the second sheet glass 1B and an interface portion in contact with the second sheet glass 1B.
The hard material 1 is provided on the intermediate layer provided between the two soft layers 19.
3 is formed, and a spacing member K constituted by a three-layer structure of the two soft layers 19 and the hard layer 18 is interposed between the first glass sheet 1A and the second glass sheet 1B. There is a technique for holding the gap 4 between the first glass sheet 1A and the second glass sheet 1B.

[0003]

According to the above-described conventional spacing member for glass panels, the conventional glass panel gap holding member is not affected by the action of a static normal external pressure (compressive stress due to atmospheric pressure) normally applied in the thickness direction of the glass sheet. The three layers cooperate to maintain a predetermined sheet glass interval. However, since a compressive stress due to the atmospheric pressure is constantly applied, the soft layer is easily crushed and thinned by aging due to creep deformation, and the buffer capacity is reduced. When an impact force (momentary and local stress) dynamically applied in the thickness direction is applied in this state, the impact force cannot be relaxedly absorbed. And
When the soft layer is crushed and thinned, it is not possible to maintain a predetermined interval between the sheet glasses, and there is a problem that a portion where the interval between the sheet glasses is partially narrow and the sheet glass is distorted. In addition, the two soft layers can be plastically deformed by the action of an impact force dynamically applied in the thickness direction to reduce the stress. Because of this, it is easy to cause deterioration, gradually crushing and thinning, it is easy to lose the buffer capacity, the interval maintaining function to hold the gap between the two glass sheets tends to decrease, and the durability is It was bad.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems, suppress the deterioration of the soft material, maintain the buffering capacity, prevent the gap maintaining function from lowering, and provide a durable glass panel gap. It is to provide a holding member.

Means for Solving the Problems The constitution of the invention of claim 1 is, as exemplified in FIGS. 5 to 7, between a first glass plate 1A and a second glass plate 1B whose plate surfaces are opposed to each other. In order to form the gap 4 and seal the gap 4 along the outer peripheral edge of the first glass sheet 1A and the second glass sheet 1B, to maintain the inside of the gap 4 in a reduced pressure state,
A spacing member K interposed between the first glass sheet 1A and the second glass sheet 1B,
And the hard part 13 are dispersedly formed in a state in which they are intertwined with each other.

As shown in FIGS. 5 and 6, the characteristic feature of the second aspect of the present invention is that the hard portion 13 is made of a plurality of granular hard materials and the soft portion 14 is made of a soft material. The soft material material is filled in gaps formed when the hard material material is dispersedly arranged.

As shown in FIGS. 5 to 7, the feature of the invention according to claim 3 is to wrap the periphery of the granular hard material with the soft material to form a block 17, and to form the block 17. Are stacked and integrated.

As shown in FIG. 5, the hard material is made of iron, tungsten, nickel, chromium, titanium, molybdenum, carbon steel, chromium steel, nickel steel, stainless steel, nickel steel. Hard metal selected from chromium steel, manganese steel, chromium manganese steel, chromium molybdenum steel, silicon steel, nichrome, duralumin, or aluminum oxide, silicon dioxide, zirconia, silicon carbide, silicon nitride, tungsten carbide, titanium carbide , Boron carbide, oxide-based glass, crystallized glass, mullite, ferrite, other complex oxides, complex oxynitride, at least one selected from low-melting glass, the soft material is formed of indium A single metal of aluminum, gold, copper, silver, lead, zinc, or tin Gold, copper, zinc, lead, silver, aluminum, cadmium, indium, bismuth, soft alloy comprising a combination of antimony and either appropriate or,
It is formed from a polymer material.

[0008] 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.

[Operation and Effect] According to the first aspect of the present invention,
Since the soft part and the hard part are dispersedly formed in a state in which they are intertwined with each other, it is possible to resist the compressive stress due to atmospheric pressure and the instantaneous and local stress. In other words, compared with the conventional example, in which a soft layer is provided on the part in contact with the glass surface to reduce the stress, in the case of the present invention, the hard part opposes against the compressive stress due to atmospheric pressure. In order to suppress the deterioration of the soft part, and for the instantaneous and local stress, disperse the stress throughout the spacing member by allowing the plastic deformation of the soft part to allow the movement of the hard part, the effect It can be moderately absorbed.
As a result, it is possible to prevent the soft layer from deteriorating as in the conventional example, and to reduce the buffer capacity and the spacing function, and to improve the durability of the spacing member.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, the hard portion is formed of a plurality of granular hard materials and the soft portion is formed. Is formed of a soft material, and the gap formed when the hard material is dispersed is filled with the soft material, so that compressive stress due to atmospheric pressure, and impact force In particular, it can effectively counter instantaneous and local displacement stress.
In other words, while resisting the compressive stress due to atmospheric pressure due to the stretching action of the stone wall structure formed by a plurality of dispersed granular hard materials, the gap between the granular hard materials is instantaneous and local displacement stress. The rolling operation of the granular hard material due to the shear stress is allowed by the soft material material that is dispersed and filled in the metal material, and the deformation stress is relaxed and absorbed. As a result, the cooperation between the granular hard material and the soft material suppresses the deterioration of the soft material, maintains the buffering capacity, prevents a decrease in the spacing function, and provides a glass panel with good durability. It became so.

According to the third aspect of the present invention, in addition to the effect of the first aspect of the present invention, it is possible to provide a lump by enclosing the periphery of the granular hard material with the soft material. Is formed, and a plurality of the masses are laminated and integrated, so that it is possible to more effectively counteract the compressive stress due to atmospheric pressure and the instantaneous and local stress. That is, since one mass is formed of one granular hard material and a soft material surrounding the hard material, a plurality of the masses are stacked and integrated to form a spacing member. The hard material and the soft material can be arranged in a substantially uniform state over the entire holding member. As a result, the internal stress applied to the spacing member can be equalized, and the buffer capacity and durability of the spacing member can be further improved.

According to the fourth aspect of the present invention, in addition to the effects of the first and second aspects of the present invention,
The hard material, iron, tungsten, nickel, chromium, titanium, molybdenum, carbon steel, chromium steel, nickel steel, stainless steel, nickel chrome steel, manganese steel, chromium manganese steel, chromium molybdenum steel, silicon steel, nichrome, Hard metal selected from duralumin, or
Aluminum oxide, silicon dioxide, zirconia, silicon carbide, silicon nitride, tungsten carbide, titanium carbide, boron carbide, oxide glass, crystallized glass, mullite, ferrite, other composite oxides, composite oxynitride,
Formed from at least one selected from low melting glass, the soft material, indium, aluminum,
Gold, copper, silver, lead, zinc, any single metal, or any combination of tin, gold, copper, zinc, lead, silver, aluminum, cadmium, indium, bismuth, antimony, as appropriate Since it is made of a soft alloy or a polymer material, the combination of the properties of each of the hard material and the soft material makes it possible to obtain the compressive stress due to atmospheric pressure and the instantaneous and local stress. And the bonding performance with glass can be improved. In other words, in order to stabilize the adhesion performance of the spacing member to the glass and improve the workability of the bonding operation, for example, a low melting point glass as a hard material, and a soft metal silver as a soft material were kneaded and formed. When the paste is applied as a paste molded body having a predetermined size and shape, and baked, and bonded to both glass sheets to form a glass panel spacing member, the low-melting glass, which is the same glass, is responsible for bonding with the glass sheet. This eliminates the need for an adhesive, improving the adhesive performance compared to other materials, and the low melting point glass, which is a hard material, resists the compressive stress caused by atmospheric pressure, and causes misalignment. With respect to an impact force such as a stress, the soft metal, which is a soft material, is plastically deformed, so that the stress can be relaxed and absorbed. As a result, it has become possible to provide a glass panel spacing member capable of improving the relaxation absorption and durability of the spacing member by combining the characteristics of the respective materials according to the usage conditions.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a glass panel spacing member according to the present invention. FIG. 1 is a partially cutaway perspective view showing an example of a glass panel according to the present invention, FIG. 2 is a longitudinal sectional view of a main part thereof, and FIGS. 3 and 4 are process explanations showing an example of the manufacturing process. FIG. In the drawings, portions denoted by the same reference numerals as those of the conventional example indicate the same or corresponding portions.

As shown in FIG.
Are opposed surfaces 2 of two glass plates 1 having a thickness of 3 mm.
, A plurality of spacers 3 (an example of the spacing member K) are provided, and one of the opposing surfaces 2A and the other of the opposing surfaces 2B are provided.
And a gap made of a low-melting glass which can maintain the gap airtight around the glass sheets 1A and 1B and can integrate the glass sheets 1A and 1B. The stopper 5 is fused to the peripheral portion 9 of the opposite surfaces 2 and hermetically sealed to maintain the inside of the gap 4 in a reduced pressure state.

The plurality of spacers 3 are formed in a columnar shape, and as shown in FIG. 2, one end of each end is disposed on one of the opposed surfaces 2 opposed to each other and adhered to each other. The contact end 3a is formed so that the height from the one end side is equal to a set value, and the contact end 3a can be brought into contact with the other facing surface 2B. Face 2
B is configured to be movable relative to B.

The glass panel 10 is assembled as follows. That is, as shown in FIG. 1, a plurality of spacers 3 are provided between the facing surfaces 2 of the plurality of glass sheets 1,
A void 4 is formed between the plurality of plate glasses 1, and the plate glasses 1 are sealed together by fusing a sealing material 5 made of low-melting glass to integrate them.

This step will be described in detail. As shown in FIGS. 3 and 4, a metal screen 11 having a circular through-hole 11a is brought into close contact with the opposing surface 2A of the first sheet glass 1A (FIG. 3A). The spacer forming paste 8 capable of forming the spacer 3 prepared in advance is imprinted into the circular through-hole 11a (see FIG. 3B), and the spacer forming paste 8 is formed on the facing surface 2A of the first plate glass 1A. Then, a paste molded body 7 is formed and arranged (see FIG. 3C).

The paste 8 for forming a spacer is composed of a glass frit, which is fine particles of a low-melting glass 15 having a fusion temperature lower than the softening point of the two glass sheets 1A and 1B, and a soft metal 1
6 is kneaded with a binder made of an organic agent or the like. If the paste is heated to the fusion temperature of the low-melting glass 15, the organic agent volatilizes as the temperature rises, and at the same time, the fine particles of the low-melting glass 15 Are fused to form glass to form the spacer preform 6. If the low melting point glass 15 is made crystallizable, the glass crystallizes after cooling, and the softening point increases. The above-mentioned fusion temperature is a temperature at which the low-melting glass fluidizes, and the fluidization generally occurs at a temperature at which the viscosity thereof becomes 10 ⁵ poise or less.
It is about 0 ° C. Therefore, if the paste 8 for forming a spacer is formed using the glass frit made of the crystallized glass, the peripheral portion 9 of the glass panel 10 is formed.
When the sealing material 5 is sealed, the low-melting glass as the sealing material 5 is heated to the fusing temperature, but there is no fear that the spacer preform 6 will be softened or fluidized again even in a furnace.

The metal screen 11, for example, has a circular through-hole 11a having a cylindrical surface with a diameter of 0.3 to 1.0 mm as a copy hole and a predetermined interval (for example, 10 to 25 m).
(m grid shape), and have a thickness of 50 to 200 μm. When the metal screen 11 is attached to the opposing surface 2A of the first glass sheet 1A, the paste 8 for forming a spacer is printed in the circular through-hole 11a, and the metal screen 11 is peeled off from the opposing surface 2; A paste molded body 7 having a predetermined shape is formed and arranged on the facing surface 2. (See Fig. 3 (c))

The first sheet glass 1A on which the spacer forming paste 8 is formed and arranged is inserted into a heating furnace, and each of the first glass sheet 1A is subjected to a predetermined solidification treatment.
(See FIG. 3 (d)), and the shaping roll 12 traverses the contacting end portions 6a of the plurality of spacer preforms 6 after the solidification treatment, which can contact the second glass sheet 1B. Each of the spacers 3 is formed by adjusting the height of the opposing surface 2A of the first plate glass 1A to a predetermined height (for example, with an accuracy of ± 1.0 μm) (see FIG. 3E).
Then, with respect to the facing surface 2B of the second glass sheet 1B,
The facing end portion 3a after the leveling and shaping is opposed with the facing surface 2A of the first sheet glass 1A facing downward (see FIG. 4F).
In a state where the contact end portion 3a is brought into contact with the opposite surface 2 of the glass sheet 1 on the other side, the sealing material 5 is provided between the first glass sheet 1A and the second glass sheet 1B over the peripheral portion 9 thereof. The two glass sheets 1A and 1B are integrated by fusion (see FIG. 4 (g)) to form the glass panel 10.

The solidification treatment is performed in accordance with the characteristics of the low melting point glass. For example, the first plate glass 1A on which the spacer forming paste 8 is formed and arranged is, for example, 4 g
Inserted into a heating furnace maintained at a firing temperature of 00 to 600 ° C. and fired, and held in the furnace until a plurality of paste molded bodies 7 are vitrified to become spacer preforms 6;
Then, it is taken out of the furnace and left to cool.

The height shaping is performed by removing the first glass sheet 1A from the furnace and then deforming the spacer preform 6 before the spacer preform 6 is completely solidified in the cooling process. This is performed by performing a rolling-down process using the shaping roll 12 in a suitable temperature range. Specifically, the temperature of the spacer preform 6 fused to the first sheet glass 1A taken out of the furnace is set to, for example, 40 to 7 from the firing temperature.
The shaping roll 12 having a surface temperature maintained at, for example, 450 to 500 ° C. while maintaining the preform softening temperature (for example, 450 ° C.) at which the spacer preform 6 can be deformed by lowering about 0 ° C. Along the opposing surface 2A of the first glass sheet 1A, it moves while maintaining the distance of the roll surface from the opposing surface 2A at a predetermined distance (for example, 20 μm), and the contact end 6a of the spacer preform 6 is moved. Is pressed and adjusted to a predetermined height to form the spacer 3. This leveling and shaping process is performed if the top surface of the paste molded body 7 after screen printing of the spacer forming paste 8 does not become parallel to the facing surface 2 and is directly solidified so as to protrude. This is because there is a possibility that the portion to be locally abutted against the facing surface 2B of the second glass sheet 1B, causing damage such as cracking to the second glass sheet 1B.

With respect to the first glass sheet 1A having the spacers 3 formed on the opposing surface 2 as described above, the opposing surface 2B of the second glass sheet 1B is brought into contact with the contact end 3a after the shaping. The glass panel 10 is manufactured integrally with the first glass sheet 1A. In other words, the first glass sheet 1A is covered from above with the spacer 3 facing downward with the opposing surface 2B of the second glass sheet 1B facing upward, and is made of low-melting glass over the entire periphery of the peripheral portion 9 thereof. A glass paste is disposed as a sealing material 5 and the second
The sheet glass 1B is fused with the peripheral portion 9 to seal the gap therebetween. At this time, a communication hole (not shown) communicating with the gap portion 4 is provided, and after vacuum suction is performed from the inside of the gap portion 4 through the communication hole, the communication hole is sealed, and a vacuum glass panel is formed. Can also be produced. In that case,
It is preferable that the degree of vacuum in the gap portion 4 is such that the internal pressure is 1 Pa or less. In addition, if it is 0.01 Pa or less, the heat insulation performance is further improved.

The spacer 3 is formed by dispersing the soft part 14 and the hard part 13 in a state where they are intricate with each other. For example, silver (A) which is a soft metal 16 formed in a granular shape
g) A plurality of (an example of the soft portion 14) are kneaded with a paste of low-melting glass 15 (an example of the hard portion 13) and solidified, and as shown in FIG. 5, silver (Ag) of the granular soft metal 16 is obtained. Are arranged in a dispersed state, and a spacer is formed in a state where the gaps between the granular soft metals 16 are filled with the low-melting glass 15, so that the low-melting glass 15 stably adheres to the plate glass. The plurality of dispersed soft metals 16 and the low melting point glass 15 cooperate with each other to resist the compressive stress caused by the atmospheric pressure, and the glass bends due to the wind pressure or the like, so that an instantaneous and local displacement stress acts. In this case, the silver (Ag) of the granular soft metal 16 plastically deforms by allowing the low melting point glass 15 to shift due to the shift stress, thereby absorbing and absorbing the shock shift stress. Can be planned.

The glass panel 1 manufactured using the glass panel spacing member K according to the present invention described above.
0 means that one end of the spacer 3 is fixed to the first glass sheet 1A and the other contact end is disposed so as to be relatively movable with respect to the second glass sheet 1B as described above. Even if the window glass bends due to wind pressure or the like, the spacer 3 is displaced with respect to the second glass plate 1B, so that the glass plate can be prevented from being damaged by the restraint due to the spacer 3 being disposed. [Another Embodiment] Another embodiment will be described below. <1> The spacer 3 is not limited to one that fills the gap formed when silver (Ag), which is the granular soft metal 16 described in the previous embodiment, with the low melting point glass 15 in the gap. Instead, for example, a hard material 13 such as steel or ceramics formed in a granular form may be mixed with molten lead (Pb) or tin (Sn) and solidified. (Fusing method) Further, for example, as shown in FIG. 6, a hard material 13 such as steel or ceramics formed in a granular shape is dispersed and arranged, and a gap formed when the hard material 13 is dispersed and arranged is A soft material 14 such as lead (Pb) or tin (Sn) formed in a granular form is filled, and the particles are connected to each other by a HIP method (hot isostatic pressing) to form a soft material 14 and a hard material 13. May be mixed and integrated. According to the HIP method, materials having different melting points can be connected without changing their shapes, and the connection strength between the particles can be adjusted, so that compressive stress due to atmospheric pressure and instantaneous and local displacement stress can be reduced. A corresponding connection strength can be exhibited. <2> The spacer 3 is, for example, as shown in FIG. 7, a hard material (an example of the hard portion 13) made of granular glass, ceramics, or steel balls, and a state that wraps the surface of the hard material. A plurality of lumps 17 formed by plating a soft material (an example of the soft portion 14) such as a soft metal are laminated, and each of them is sintered or pressed or CIP (cold isostatic pressing) or the like. May be connected and integrated. <3> The shape of the hard material is not limited to the granular shape described in the above embodiment, and may be, for example, a scale (flake) shape, a fibrous shape, or an irregular shape. Further, the shape of the soft material is not limited to an irregular shape, but may be granular,
It may have a scale (flake) shape or a fibrous shape. The combination of the hard material and the soft material according to their shapes and sizes is arbitrary as long as the combination can cope with the compressive stress due to atmospheric pressure and the instantaneous and local displacement stress. Further, the stress relaxation force against the compressive stress caused by the atmospheric pressure and the instantaneous and local displacement stress can be easily adjusted by changing the mixing ratio of the hard material and the soft material. <4> The hard material is not limited to the low-melting glass or ceramics described in the above embodiment.
Iron, tungsten, nickel, chromium, titanium, molybdenum, carbon steel, chrome steel, nickel steel, stainless steel,
Hard metal selected from nickel chromium steel, manganese steel, chromium manganese steel, chromium molybdenum steel, silicon steel, nichrome, duralumin, or aluminum oxide,
At least one selected from silicon dioxide, zirconia, silicon carbide, silicon nitride, tungsten carbide, titanium carbide, boron carbide, oxide glass, crystallized glass, mullite, ferrite, other composite oxides, and composite oxynitride It may be formed from one type. Further, the soft material is indium, aluminum, gold, copper, silver, lead, zinc, a single metal of the soft metal described in the above embodiment, or tin, gold, copper, zinc, lead,
A soft alloy obtained by appropriately combining any of silver, aluminum, cadmium, indium, bismuth, and antimony, more specifically, a Sn-Pb-based, Sn-Zn-based,
n-Sb, In-Sn, In-Pb, In-Zn
System, In-Al system, In-Sn-Zn system, In-Ag-
Pb-based soft alloys, or polyisoprene, silicone, polysulfide, polyolefin,
Polytetrafluoroethylene, polyvinylidene fluoride,
Formed from a polymer material selected from polyacrylonitrile, polymethacrylonitrile, polyethylene terephthalate, polyamide, polyimide, polyurethane, polycarbonate, polyurethane, polyvinyl chloride, polyvinyl fluoride, butyl rubber, ethylene propylene rubber, and silicone rubber There may be some.

[0026]

EXAMPLES The plate glass used in this example was a 3 mm float plate glass having a size of 200 × 200 mm. A paste of the following composition, which was formed into a substantially cylindrical shape having a diameter of 0.8 mm and a height of 0.2 mm, was applied on this glass in a grid pattern by a screen printing method so that they were spaced apart by 20 mm. (Sample 1) Low melting point glass Lead-cored silicate glass (GA-9 manufactured by NEC Corporation) Sample (A) (Sample 2) Low melting point glass mixed with fine crystal powder component as follows Sample (1) Low melting point glass _{(PbO 54%, SiO 2 32} %, alkali 8%, other 6%) crystalline fine powder _{(CoO 50%, Fe 2 O} 3 30%, M nO 2 20%) , and low-melting glass: crystal powder = 3: 1 mixture (Sample 3) A mixture of the above low melting point glass and Ag fine particles (particle size: 5-30 μm, average particle size: 10 μm) as follows. Low melting point glass: Ag fine particles 60 40 sample (C-3) 40 60 sample (C-2) 20 80 sample (C-1) 10 90 sample (D) 5 95 sample (E) (Sample 4) The above low melting point glass And a mixture of Al fine particles (particle size: 5 to 40 μm). Low-melting glass: Al fine particles 60 40 sample (q-3) 40 60 sample (q-2) 20 80 sample (q-1) 10 90 sample (g) 5 95 sample (h) (Sample 5) The above low-melting glass Mixed with Fe fine particles (average particle size: 4 μm). Low melting point glass: Fe fine particles 20 80 sample (k) 10 90 sample (co) 5 95 sample (sa) (sample 6) SUS fine particles (particle diameter: 10-30 µm) and Ag fine particles mixed as follows . SUS fine particles: Ag fine particles 60 40 samples (S-3) 40 60 samples (S-2) 25 75 samples (S-1) 10 90 samples (S) 5 95 samples (S) Improves coatability to these components 6% of ethylcellulose and 56.5% of α-terpinol were mixed. This was fired at 520 ° C. to obtain a lower glass. 194 to this
A 3 mm float glass sheet having a size of × 194 mm was used as an upper plate and shifted by 3 mm in four rounds to be overlapped. A through hole having a diameter of 2.1 mm was formed in the upper plate, and a 1.9 mm glass tube was set in this hole. Thereafter, a low-melting glass sealant was placed around the end and around the glass tube, and the two glass sheets and the glass tube were fused by baking at 450 ° C. for 30 minutes. Next, the inside was reduced to 0.01 Pa using a vacuum pump, and then the glass tube was locally heated and sealed to obtain a vacuum glass panel sample. This sample was prepared for each of the five samples. Next, the sample was placed horizontally, and 1.
A 04 Kg steel ball was dropped and collided. The falling height when the sample glass was broken was examined by changing the falling height. The average results of the five bodies are shown in the table below. Sample Average drop height (mm) (a) 44 (b) 48 (c-3) 44 (c-2) 55 (c-1) 132 (d) 217 (e) 232 (c-3) 40 ( F-2) 50 (f-1) 136 (f) 189 (f) 255 (f) 44 (f) 47 (f) 44 (f-3) 45 (f-2) 62 (f-1) 101 (f-1) S) 150 (C) 176 As is clear from the results, a low-melting glass (sample 1), which is a brittle material, hard crystal fine powder such as CoO (sample 2), or Fe fine particles (sample 5) was added thereto. In this case, the impact resistance is low, but the soft material Ag is 80%
A mixture of the above (Sample 3) or Al fine particles of 8
When 0% or more (sample 4) is mixed, the impact resistance is clearly improved. Also, Ag powder 7 which is a soft material is used.
When the SUS fine particles, which are hard materials, are mixed at 5% or more and 25% or less (sample 6), high impact resistance is also exhibited.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an external appearance of an example of a glass panel according to the present invention.

FIG. 2 is a longitudinal sectional view of a main part of an example of a glass panel according to the present invention.

FIG. 3 is a process explanatory view showing an example of a glass panel manufacturing process according to the present invention.

FIG. 4 is a process explanatory view showing a step following FIG. 3;

FIG. 5 is an enlarged longitudinal sectional view of a main part showing a spacer according to the present invention.

FIG. 6 is an enlarged longitudinal sectional view of a main part showing another example of the spacer according to the present invention.

FIG. 7 is an enlarged longitudinal sectional view of a main part showing another example of the spacer according to the present invention.

FIG. 8 is an enlarged vertical sectional view of a main part showing a conventional spacer.

[Explanation of symbols]

 Reference Signs List 1A First sheet glass 1B Second sheet glass 4 Void portion 13 Hard material 14 Soft material 15 Low melting point glass 16 Soft metal 17 Lump K K spacing member

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Osamu Asano 3-5-1, Doshumachi, Chuo-ku, Osaka-shi, Osaka F-term in Nippon Sheet Glass Co., Ltd. 4G061 AA01 AA09 BA01 CB06 CB12 CD02 CD14 CD22 CD27

Claims (4)

[Claims] 1. A gap is formed between a first sheet glass and a second sheet glass whose sheet surfaces face each other, and the gap is sealed along an outer peripheral edge of the first sheet glass and the second sheet glass. A space holding member interposed between the first glass sheet and the second glass sheet, in which a soft part and a hard part are entangled with each other in order to hold the inside of the gap in a reduced pressure state. A glass panel spacing member formed in a dispersed state. 2. The method according to claim 1, wherein the hard portion is formed of a plurality of granular hard material materials, and the soft portion is formed of a soft material material. 2. The glass panel spacing member according to claim 1, wherein the glass material is formed by filling the soft material. 3. The glass according to claim 1, wherein a lumpy body is formed by wrapping the periphery of the granular hard material with the soft material, and a plurality of the lumps are laminated and integrated. Panel spacing member. 4. The hard material is made of iron, tungsten,
Nickel, chrome, titanium, molybdenum, carbon steel, chrome steel, nickel steel, stainless steel, nickel chrome steel,
Manganese steel, chrome manganese steel, chrome molybdenum steel,
Silicon steel, nichrome, hard metal selected from duralumin, or aluminum oxide, silicon dioxide, zirconia, silicon carbide, silicon nitride, tungsten carbide,
Titanium carbide, boron carbide, oxide glass, crystallized glass, mullite, ferrite, other composite oxides, composite oxynitride, formed from at least one selected from low-melting glass, the soft material , Indium, aluminum, gold, copper, silver, lead, zinc, any single metal or tin, gold, copper, zinc, lead, silver, aluminum, cadmium, indium, bismuth, antimony Or a soft alloy appropriately combined, or
3. The spacing member for a glass panel according to claim 1, which is formed from a polymer material.