JP3327458B2 - Double-glazed glass with lattice - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-glazed glass in which a set grid composed of cylindrical grid sides is arranged in an internal space, and a double-glazed glass with a grid in which a reduction in soundproof performance due to a resonance phenomenon of the glass plate is suppressed. .

[0002]

2. Description of the Related Art It is known to dispose a grid made of a hard resin or the like in the internal space of a double-glazed glass, thereby preventing damage to a glass plate from the outside and preventing intrusion. It has advantages such as bringing out decorativeness.

[0003] In many cases, the sides of the lattice constituting the lattice are generally solid, but the weight increases.
In particular, there is a problem that handling becomes difficult as the size of the glass becomes large, and the material cost increases.

Therefore, in the present invention, it is assumed that a thin cylindrical lattice (grid side) is used.
If the hollow glass is simply hollow, the sound insulating performance in the resonance vibration region of the glass plate is not improved as compared with a general double-glazed glass having no lattice, as described later, but the problem that it is rather poor is left.

[0005] When the surface facing both glass plates comes close to or comes into contact with the glass plates, the gas in the multi-layer glass (usually using dry air, Gases such as chlorofluorocarbon gas with low thermal conductivity to improve the insulation, special gases such as argon gas and sulfur hexafluoride gas with different specific gravity from air to improve soundproofing, and mixed gas with them. Are often expanded or contracted, and the glass plate and the lattice come into strong contact with each other, often causing cracks or breakage in the glass plate.

Also, sound waves (vibrations) from one side (for example, the outdoor side) propagate directly to the grid through one glass plate, and further radiate to the other side (indoor side) through the other glass plate. As a result, the soundproofing property is easily impaired.

[0007] The applicant of the present application has disclosed in Japanese Patent Application No. 7-247160 (Japanese Patent Application Laid-Open No. 9-86973) “Multilayer glass” previously filed by the applicant of the present application, the ratio of the thickness of the grating to the thickness of the internal space layer. The ratio is set to 0.9 or less, and the grid is arranged at the center of the internal space layer with respect to the thickness of the internal space layer, and is separated from both glass plates,
It was proposed to prevent the occurrence of cracks and breakage of the glass plate due to the change of the external atmospheric pressure and the external impact. In this case, the vibration of the glass sheet is not directly transmitted to the lattice as described above, but when the lattice is simply a hollow thin-walled cylindrical lattice, the resonance vibration of the glass sheet is rather higher than that of a double-layer glass without the lattice. Transmission loss in the region is slightly inferior, JIS A
It was found that the sound insulation rating according to 4706 was at most TS-20 rating.

The present invention has been made in view of the above problems, and has as its object to provide an improved double-glazed glass sheet in which a reduction in soundproofing performance of the two glass sheets in a resonance vibration region is suppressed.

[0009]

That is, according to the present invention, a spacer is disposed around the entire periphery of a pair of glass plates facing each other, and a cylinder is provided in an internal space formed by bonding without contacting the glass plate. In a double-layer glass in which a set lattice composed of mold lattice sides is arranged, the cylindrical lattice sides are thin hollow bodies, and a reinforcing portion for increasing the compressive strength in the direction of the facing surface of the glass plate is provided. Of the sound transmission loss in the resonance vibration range of JIS A 4706, the sound insulation grade is TS-
It is a double-glazed glass with a rating of 25 or higher.

More specifically, it is preferable to arrange a partition in the direction of the facing surface of the glass plate in the cylindrical lattice side, or to make the side part thicker. In addition, it is preferable to dispose a button-shaped projection which can be brought into and out of contact with the glass plate gently or in proximity to the intersection joint forming the assembled lattice.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front view of a double-glazed glass provided with a set lattice. In a double-glazed glass 1, spacers 3 are arranged on the peripheral edges of both glass plates 2 facing each other to form an internal space 4.
A desiccant is contained in the spacer 3 and a hole or a slit (not shown) communicating with the internal space 4 is formed in the spacer, so that the atmosphere of the internal space is maintained in a dry state, and the formation of dew is generated. prevent.

The internal space 4 has a cylindrical lattice side 6 vertically and horizontally.
(Hereinafter simply referred to as lattice sides) are arranged at appropriate intervals and incorporated therein. In this embodiment, the lattice side 6
Is shown in which the joints 7 and 8 (hereinafter simply referred to as joints) are incorporated at the intersections of the two. However, the intersections of the other lattice sides intersecting with one lattice side are cut and incorporated. For example, the intersection can be designed as required. Further, the assembled lattice is not limited to the illustrated one, and includes various forms such as those in which lattice sides are arranged in an oblique direction and obliquely shaped in a rhombic shape, and those arranged in a honeycomb shape.

The lattice lattice 5 (lattice side 6) is lightweight and has excellent rigidity, such as acrylonitrile butadiene styrene (ABS) copolymer, acrylethylene styrene (AES) copolymer, and other polymers and copolymers. It is desirable to use a hard resin which is rich in durability and easily colored. The distance (opening) between the lattice sides is appropriately adopted in the range of about 200 mm to 400 mm.

The glass plate 2 is usually made of transparent, uncolored or colored soda-lime glass, but is not limited thereto. For example, a template glass, a ground glass, a glass with a metal wire, a heat-strengthened glass, Various treated glasses such as chemically strengthened glass and various component glasses such as aluminosilicate glass and borosilicate glass can be employed.

The standard thickness of the glass plate 2 is 3 mm.
Those with about 2 mm to 6 mm are often used. If the thickness is higher than the above range, the weight increases and the handling workability becomes difficult, and if the thickness is thinner, breakage easily occurs. In addition, changing the thickness of one glass plate and the other glass plate can help suppress the mutual resonance of the glass plates.

The width or length of the glass plate 2 is about 500 mm to about 1500 mm, usually 1000 mm □ or 1000 mm.
× 1500mm is often used. The thickness of the internal space 4 of the double glazing 1 is often about 12 mm, but can be adopted in a wide range such as about 4 to 6 mm to 15 mm.

FIG. 2 shows a cross section of the lattice side 6 of the set lattice 5. In the drawing, the cross sections are all octagonal, but circles to ellipses and various polygons are also included in the scope of the present invention. The thickness of the internal space 4 (the thickness in the direction facing the glass plate) is, for example, 12 mm, while the thickness of the lattice sides 6 in the direction facing the glass plate (the vertical thickness in the figure) is about 9 mm. The vibration of the glass plate 2 does not directly propagate to the lattice sides 6 by separating from the lattice plate 6. It is desirable that the thickness of the lattice side 6 be about 1 mm to 1.5 mm in order to reduce the weight and secure the robustness.

FIG. 2A shows a conventional lattice side 6 having a thickness of about 1 mm.
showed that. On the other hand, FIG. 2B relates to the present invention, in which a partition 9 having a thickness of, for example, about 1 mm is provided as a reinforcing portion on the grid side 6, and the presence of the partition 9 improves the compressive strength of the grid side 6, possibly. It is assumed that the air vibration in the internal space 4 is restricted, and the resonance vibration between the two glass plates 2 is suppressed.

That is, in the schematic cross-sectional view of FIG. 3 (corresponding to FIG. 2B) near the side of the double-layer glass lattice, a sound wave (indicated by a waveform) V from a sound source on one side passes through the glass plate 2a and passes through the inside. Sound wave W transmitted directly to glass plate 2b side in space 4
And a sound wave X that is interrupted by the lattice side 6 having a middle partition 9 and having compressive strength and is partially reflected or disturbed, and interferes with each other, thereby causing a sound wave Y exiting through the glass plate 2b. Seems to be reduced.

FIG. 5 is a graph showing the frequency 1 measured according to JIS A 1416 (method of measuring sound transmission loss in a laboratory).
FIG. 7 shows a sound transmission loss (dB) curve of the double-layer glass over a range of 00 to 5000 Hz. The larger the sound transmission loss, the more the sound wave transmission at each frequency is suppressed. Also,
In the figure, the lines for TS-20 grade to TS-35 grade are JIS A 4706
This indicates a sound insulation grade line based on the evaluation criteria defined in (sash). If the sound transmission loss curve is substantially equal to or exceeds each TS grade line, the TS grade is evaluated.

In the case of double glazing, there is a minimum portion of sound transmission loss due to resonance between the two glass plates in a frequency range of 200 to 500 Hz (the minimum portion varies in the frequency range depending on the thickness of both glass plates). ), Which causes a decrease in the TS sound insulation grade. By adopting the above-described means, it is possible to improve the decrease in the sound transmission loss in the frequency range.

The above-mentioned middle partition 9 is preferably provided over the entire length of the lattice side 6, but may be provided separately in the length direction of the lattice side. Further, a plurality of intermediate partitions 9 may be arranged in the width direction of the lattice side 6.

FIG. 2C shows another embodiment in which another intermediate partition 9 'arranged in a crossed strut is provided as an intermediate partition in place of FIG. 2B, which is further effective in suppressing the resonance of the glass plate. That is, as the middle partition, those having various cross-sectional shapes can be adopted in order to improve the compressive strength of the lattice side 6 in the thickness direction of the internal space 4. However, the shape does not need to be particularly complicated.

FIG. 2D shows another embodiment in which the side portions 10 and 10 of the lattice side 6 have a thickness exceeding 1.5 mm, for example, as a reinforcing portion.
Has the effect of suppressing the resonance of the glass plate.

[0025] The lattice sides provided with the intermediate partitions or having the side portions having a large thickness can be easily manufactured in large quantities by, for example, extrusion molding, but the manufacturing means is not particularly limited.

FIG. 4 is a cross-sectional view showing a joint made of the same hard resin as the lattice sides and the engagement state with the lattice sides. FIG. 4A
FIG. 3 is a side sectional view showing one joint 7. The joint 7 is provided with a resilient spring 12 inside a hollow portion 11 of the main body.
Button-like projections made of (co) polymers, preferably softer (co) polymers, such as polyvinyl chloride, polypropylene, etc., so that they can appear on one and the other side (up and down in the figure) Normally, when the lattice 5 (joint 7) is separated and separated from the glass plate 2, the respective button-shaped projections 13 and 13 'come into gentle contact with the glass plates 2 and 2. , Or in proximity. When there is no button-shaped protrusion, when the glass plate 2 is in a state of being separated from the assembled grid 5 and the glass plate 2 and the assembled lattice 5 come into contact with each other due to some external impact such as a gust, the sound is irritating. The arrangement of the button-shaped projections 13, 13 'suppresses the generation of such contact noise. If the glass plate 2 and the grid 5 are in strong contact with each other, there is a risk that the glass plate 2 will be cracked. However, if the button-shaped projections 13 and 13 'are arranged, the elastic spring 12 is interposed. Due to the buffering action of the button-shaped projection, the generation of cracks can be suppressed. In addition, external sound waves directly reach the button-shaped projections 13 and 13 ′ via the glass plate 2, but are buffered by the resilient spring 12,
The effect on the soundproofing function of the double glazing thereby is minor.

Joint 7 having button-shaped projections 13 and 13 '
Has insertion pieces 14 and 14 ′ on the sides facing the lattice sides 6, which are inserted into the cylinders of the lattice sides 6 to form the integrated lattice 5. For example, a middle partition 9 is placed on the lattice side 6.
(See FIG. 2B), but it is appropriately designed such that a pair of insertion pieces 14 and 14 'are provided so as to fit into the space partitioned by the intermediate partition 9.

It is not necessary to arrange the joints 7 at all lattice intersections, as shown in FIG.
Or it may be arranged at a small number of grid intersections. The joint 7
Although not shown, it is manufactured by press molding or the like in a state of being divided into upper and lower parts, and after incorporating the button-shaped projection and the resilient spring therein, the divided parts can be joined and formed. .

FIG. 4B is a side sectional view showing another joint. The other joint 8 is arranged at a lattice intersection other than the place where the joint 7 is arranged. A hollow or solid body corresponding to 11 (a hollow example is shown in the figure), and inserts corresponding to the inserts 14 and 14 ′ of the joint 7. ,
This is to form an integrated grid 5.

In some cases, the end of the lattice side 6 is directly adhered to the spacer 3 when the lattice side 6 and the spacer 3 are joined together. There is no need to correspond to the main body 11),
What is necessary is just to insert over the cylinder part of a lattice side and the fitting hole previously drilled in the spacer.

In the double-glazed glass with lattice according to the present invention, as already known, the thickness of one and the other glass plates is changed (for example, 3 mm and 4 mm, 3 mm and 5 mm, etc.),
Needless to say, if the internal space is filled with a gas having a specific gravity different from that of air (for example, argon gas, sulfur hexafluoride gas, or the like), a further soundproofing effect is exhibited.

[0032]

【Example】

[Preparation of sample] A glass plate with a size of 1050 mm x 1050 mm, a thickness of about 3 mm, a width (L) of 18 mm, a height (H) of 9 mm, lattice sides of various cross-sections made of AES resin, a lattice joint, and a height.
An aluminum spacer having a drying agent of 12 mm was prepared.

COMPARATIVE EXAMPLE 1 A spacer was arranged on the periphery of a pair of glass plates without using a grid, and bonded to produce a double-glazed glass.

Comparative Example 2: A pre-assembled lattice consisting of lattice sides and joints was previously incorporated into a spacer, and both glass plates were bonded to produce a double-glazed glass with a lattice as shown in FIG. In addition, as shown in FIG. 2A, a grid side (with a cylindrical portion thickness of 1 mm) having no partition was used.

Example 1 Double-glazed glass having a lattice was produced in the same manner as in Comparative Example 2. However, a grid side having a partition as shown in FIG. 2B (the thickness of the cylindrical portion was 1 mm and the thickness of the partition was 1 mm) was employed.

Example 2 In the same manner as in Comparative Example 2, a double-glazed glass sheet with a lattice was produced. However, as shown in FIG. 2C, grid sides having a crossed strut-shaped middle partition (the thickness of the cylindrical portion was 1 mm and the thickness of one piece of the middle partition was 1 mm) were adopted.

Example 3 In the same manner as in Comparative Example 2, a double-glazed glass containing a lattice was produced. However, as shown in FIG. 2D, a lattice side having a thick side (1 mm thick on the side with respect to the glass plate of the cylindrical part, 1.8 mm thick on the side) with respect to the glass plate was adopted.

[Soundproof performance test] Test method: In accordance with JIS A 1416 (method of measuring sound transmission loss in a laboratory), a sample is inserted through a frame into an opening between a reverberation room for a sound source and a reverberation room for sound reception. With frequency 100 ~ 5000
Sound transmission loss (dB) over Hz was measured. JIS
The sound insulation grade was determined according to the evaluation criteria specified in A 4706 (sash).

Results: Table 1 shows the sound transmission loss (dB) at the main frequencies of each of the comparative examples and examples, and the graph of FIG. 5 shows the comparative example 1 (COEX.1 in the figure) and the comparative example 2. The relationship between the frequency (Hz) and the sound transmission loss (dB) and the relationship with the sound insulation grade (TS-grade) of (COEX.2) and Example 1 (EX.1) are shown.

In Comparative Examples 1 and 2, the frequency 3
A decrease in soundproofing performance in the resonance vibration range of 200 to 500 Hz with a bottom of 15 Hz is observed. On the other hand, in Examples 1, 2, and 3, it can be seen that the reduction of the sound range is considerably improved.

[Compression strength test] Test method: Each of the grid sides employed in Comparative Example 2, Example 1 and Example 2 had a length of 50 mm (the width was 18 mm, and the area related to compression was 9 cm ^2). The compression test was conducted over a height of 9 mm. As a test device, Orientic tensile strength tester (UCT-10T) was used, and 1 mm / mi
0.5mi before shifting from linear change to curve in displacement (mm) -load (kgf) curve.
The intensity at n was measured.

Results: The results are shown in Table 1. As is clear from the table, it is understood that the higher the compressive strength of the lattice side, the higher the soundproofing performance. Depending on the cross-sectional area of the grid side,
When the compressive strength is approximately 500 kgf / 9 cm ² or more, improvement in soundproof performance is recognized.

[Table 1] Compressive strength Sound transmission loss (dB) Sound insulation grade composition (kgf / 9cm ² ) 315Hz 1600Hz (TS-grade ) Comparative Example 1 No lattice grid (ordinary double glazing) --- 16 39 20 Comparison Example 2 With a grid (without middle partition <see Fig. 2A>) 205 15 41 20 Example 1 With a grid (with middle partition <see Fig. 2B>) 888 19 42 25 Embodiment 2 With a grid (with partition < 910 21 43 25 Example 3 With lattice (without middle partition, thicker side part <see FIG. 2D>) 897 19 42 25

[0044]

According to the present invention, it is possible to suppress a decrease in soundproofing performance in the resonance vibration region of the glass sheet in the double-glazing.

[Brief description of the drawings]

FIG. 1 is a front view of a double-glazing unit provided with a grid.

2A and 2B show cross-sectional forms of lattice sides in a set lattice. FIG. 2A shows a conventional lattice side, FIG. 2B shows a lattice side provided with a partition, and FIG. 2C shows a lattice side provided with another partition. Things, Figure 2
D is one in which the side portions of the lattice sides are thick.

FIG. 3 is a schematic cross-sectional view of the vicinity of a side of a double-layer glass lattice, showing a state of transmission of sound waves.

FIG. 4 is a cross-sectional view showing an engagement state between a joint and a lattice side, and FIG. 4A is an engagement state between one joint and a glass plate;
Represents an engagement state between another joint and the glass plate.

FIG. 5 is a graph showing a relationship between a frequency (Hz) and a sound transmission loss (dB) and a relationship between a sound insulation grade (TS and a grade) in Comparative Examples and Main Examples.

[Explanation of symbols]

 1 -------- Insulated glass 2 -------- Glass plate 3 -------- Spacer 4 -------- Internal space 5 ----- --- Assembly lattice 6 -------- (tubular) lattice side 7,8 --- (intersection) Joint 9,9 '--- interior partition

Claims (3)

(57) [Claims] A spacer is disposed around the entire periphery of a pair of glass plates facing each other, and a set grid consisting of cylindrical grid sides is disposed in an internal space formed by bonding without contacting the glass plate. In the existing double-glazed glass, the cylindrical lattice side is a thin hollow body, and by having a reinforcing portion for increasing the compressive strength in the facing surface direction of the glass plate, the sound transmission loss in the resonance vibration region of the glass plate. A double-glazed glass with lattice, characterized in that the deterioration is suppressed and the sound insulation grade according to JIS A 4706 is higher than TS-25 grade. 2. A multi-layered structure with a lattice according to claim 1, wherein a partition is provided in the cylindrical lattice side in the direction of the facing surface of the glass plate, or the side part is made thicker. Glass. 3. A grid-type joint according to claim 1 or 2, wherein a button-shaped projection which can be brought into and out of contact with the glass plate gently or in close proximity to the glass plate is arranged at the intersection joint forming the assembled grid. Double glazing.