Glass unit

Abstract

To provide a glass unit capable of suppressing warpage of a glass laminate.SOLUTION: The laminated glass includes a glass laminate 10 including a first glass plate 11 and a second glass plate 12 arranged to face each other, a plate warpage suppressing member 16 arranged at a position away from a surface of the glass laminate 10 in a thickness direction of the glass laminate 10 in an outer edge portion of the glass laminate 10 and suppressing warpage of the glass laminate 10, and an intermediate member 17 provided between the glass laminate 10 and the plate warpage suppressing member 16.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a glazing unit. [Background technology]

[0002] As an example of a conventional glass unit, as described in Patent Document 1, there is one that includes a glass laminate in which a first glass plate and a second glass plate are arranged opposite each other with a gap between them, and the internal space between the first glass plate and the second glass plate is in a vacuum state or a predetermined gas is injected into the internal space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-059640 Summary of the Invention [Problem to be solved by the invention]

[0004] In a glass unit, the surface temperatures of the first and second glass sheets located on the indoor side and the outdoor side may differ significantly. In such conventional glass units, the difference in surface temperatures between the first and second glass sheets may cause warping in the glass laminate.

[0005] For example, in a sliding window made up of multiple glass units, if the glass laminate warps, the warping of the glass laminate can cause the frame (joint frame) that surrounds the periphery of the glass laminate to warp. In this case, when opening or closing the window, the warped frame can collide with the frame (joint frame) that surrounds the periphery of the glass laminate of the adjacent glass unit, making it difficult to open or close the window.

[0006] Therefore, an object of the present invention is to provide a glass unit that can suppress warping of a glass laminate. [Means for solving the problem]

[0007] The glass unit of the present invention comprises a glass laminate including a first glass plate and a second glass plate arranged opposite each other, a plate warp suppression member arranged at the outer edge of the glass laminate at a position away from the surface of the glass laminate in the thickness direction of the glass laminate, and suppressing warping of the glass laminate, and an intermediate member provided between the glass laminate and the plate warp suppression member.

[0008] According to this invention, the rigidity is increased by the plate warp suppressing member that supports the glass laminate via the intermediate member, and as a result, it is possible to suppress warpage of the glass laminate.

[0009] In the present invention, it is preferable that a plurality of the plate warp suppression members are provided, and the plurality of plate warp suppression members are arranged separately on both sides of the glass laminate in the thickness direction of the glass laminate.

[0010] According to this configuration, the plate warp suppression members arranged separately on both sides of the thickness of the glass laminate increase the rigidity in either direction of the thickness of the glass laminate, making it possible to suppress warping that occurs in either direction of the thickness of the glass laminate.

[0011] In the present invention, it is preferable that a connecting member is provided to connect the plate warp suppression member arranged on one side of the thickness direction of the glass laminate and the plate warp suppression member arranged on the other side of the thickness direction of the glass laminate.

[0012] According to this configuration, if the plurality of plate warp suppressing members are fixed to the connecting member in advance during manufacturing, the plurality of plate warp suppressing members can be attached simply by attaching the connecting member to the glass laminate. In other words, it is possible to facilitate the attachment of the plurality of plate warp suppressing members to the glass laminate.

[0013] In the present invention, it is preferable that the plate warp suppressing member and the connecting member are formed of plate-shaped members, and that the thickness of the plate warp suppressing member is greater than the thickness of the connecting member.

[0014] According to this configuration, even if the connecting member is made of a thin plate-like member for reasons such as weight reduction, it is possible to achieve a configuration that effectively suppresses warping of the glass laminate.

[0015] In the present invention, it is preferable that an outer end portion of the plate warp suppressing member is positioned outward from an outer end portion of the connecting member in a direction along the surface of the glass laminate.

[0016] With this configuration, the size of the plate warp suppressing member in the direction along the surface of the glass laminate is larger than the size of the connecting member. For example, even if the connecting member is configured to be small for reasons such as weight reduction, the cross-sectional area of ​​the plate warp suppressing member can be configured to be large, thereby enabling a configuration that effectively suppresses warpage of the glass laminate.

[0017] In the present invention, it is preferable that the plate warp suppressing member and the connecting member are integrally configured.

[0018] This configuration makes it possible to reduce the number of components that make up the glass unit.

[0019] In the present invention, it is preferable that the connecting member has a support portion located at a position farther from the glass laminate than the plate warp suppressing member in the thickness direction of the glass laminate.

[0020] According to this configuration, the plate warp suppression member is supported by the support part from the opposite side of the glass laminate in the thickness direction of the glass laminate, making it possible to more firmly suppress warping of the glass laminate.

[0021] In the present invention, it is preferable that the plate warp suppression member has two warp suppression sections that are arranged separately on both sides of the glass laminate in the thickness direction of the glass laminate, each extending in a direction along the surface of the glass laminate, and a connecting section that is provided across the two warp suppression sections.

[0022] According to this configuration, the warp suppression parts are arranged separately on both sides of the thickness of the glass laminate and are further connected by connecting parts, thereby increasing rigidity and suppressing warp that occurs in either direction in the thickness direction of the glass laminate, making it possible to more effectively suppress warp of the glass laminate.

[0023] In the present invention, it is preferable that the glass laminate is configured in a rectangular shape having short sides and long sides, and that the plate warp suppression member is arranged at a position corresponding to the outer edge portion of the long side of the glass laminate.

[0024] In a glass laminate having a rectangular shape having short and long sides, warpage often occurs more on the long sides than on the short sides. By arranging the plate warp suppressing member at a position corresponding to the outer edge portion of the long sides of the glass laminate, it is possible to efficiently suppress warpage of the glass laminate.

[0025] In the present invention, it is preferable that the plate warp suppressing member is made of SUS material.

[0026] According to this configuration, the plate warp suppressing member is made of SUS material, which is generally resistant to rust, and therefore can be stored and used for a long period of time, for example.

[0027] In the present invention, it is preferable that the thickness of the plate warp suppressing member is 1 mm or more and 7 mm or less.

[0028] With this configuration, glass laminates are generally fitted and fixed into frames such as sashes, but it is possible to configure the glass laminate so that it can be fitted into a frame and also to achieve the effect of suppressing warping of the glass laminate.

[0029] In the present invention, it is preferable that the thickness of the connecting member is 1 mm or more and 5 mm or less.

[0030] With this configuration, glass laminates are generally fitted and fixed into frames such as sashes, but it is possible to configure the glass laminate so that it can be fitted into a frame and also to achieve the effect of suppressing warping of the glass laminate.

[0031] In the present invention, it is preferable that the length of the plate warp suppressing member is 1760 mm or more and 2640 mm or less.

[0032] This configuration makes it possible to provide a configuration that is easy to use in glass laminates that are generally used in buildings and the like.

[0033] In the present invention, it is preferable that the Young's modulus of the plate warp suppression member is 154 MPa or more and 232 MPa or less.

[0034] This configuration makes it possible to more effectively suppress warpage of the glass laminate. [Brief explanation of the drawings]

[0035] [Figure 1] 10A and 10B are diagrams showing the configuration of a glass unit fitted and fixed to a frame body. [Figure 2] FIG. 1 is a diagram showing a configuration of a glass laminate. [Figure 3] 2 is a cross-sectional view showing the configuration of a glass laminate, a reinforcing material, and a plate warp suppressing member. FIG. [Figure 4] 2 is a cross-sectional view showing the configuration of a glass laminate, a reinforcing material, a plate warp suppressing member, and a frame body. FIG. [Figure 5] 10 is a cross-sectional view showing the configurations of a glass laminate, a reinforcing material, a plate warp suppressing member, and a frame body in Example 2. FIG. [Figure 6] 10 is a cross-sectional view showing the configurations of a glass laminate, a reinforcing material, a plate warp suppressing member, and a frame in Example 3. FIG. [Figure 7]FIG. 3 is a diagram showing the results of measuring the warpage of the glass unit and the warpage of the frame for each temperature difference between the surface temperatures of the first glass plate and the second glass plate of the glass laminate in Examples 1 to 3 and Comparative Examples 1 to 3. [Figure 8] FIG. 10 is a cross-sectional view showing the configuration of a glass laminate, a reinforcing material, a plate warp suppressing member, and a frame body in another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0036] An embodiment of a glass unit 100 according to the present invention will be described with reference to the drawings.

[0037] [Glass unit configuration] As shown in FIG. 1, the glass unit 100 includes a glass laminate 10 including a plurality of glass plates, and a frame 20.

[0038] 2 and 3, the glass laminate 10 includes a first glass plate 11 and a second glass plate 12 arranged opposite each other as a plurality of glass plates, a spacer 13, and a sealing material 14. The glass laminate 10 is configured in a rectangular shape having a short side SS and a long side LS.

[0039] In this embodiment, the first glass plate 11 and the second glass plate 12 are rectangular. The second glass plate 12, which is located on the lower side in Fig. 3, is formed to be slightly larger than the first glass plate 11. The first glass plate 11 has a first surface 31 and a second surface 32 provided on the back side of the first surface 31. The second glass plate 12 has a third surface 33 facing the second surface 32 of the first glass plate 11 and a fourth surface 34 provided on the back side of the third surface 33.

[0040] There are no particular limitations on the materials constituting the first glass plate 11 and the second glass plate 12, and known glass plates can be used. Depending on the application, various glass plates can be used, such as patterned glass, frosted glass with a light diffusion function provided by surface treatment, wired glass, tempered glass, heat-strengthened glass, low-emissivity glass, high-transmittance glass, heat-absorbing glass, or a combination thereof.

[0041] A plurality of spacers 13 are provided between the first glass plate 11 and the second glass plate 12. The spacers 13 form a predetermined gap between the first glass plate 11 and the second glass plate 12. Known transparent or translucent spacers can be used as the spacers 13. The distance between the first glass plate 11 and the second glass plate 12 can be, for example, 0.1 mm to 2.0 mm.

[0042] The gap at the periphery of the first glass plate 11 and the second glass plate 12 is sealed with a sealing material 14. As a result, a sealed internal space IS is formed between the first glass plate 11 and the second glass plate 12. To enhance the heat insulating effect, the internal space IS is depressurized to a vacuum state.

[0043] 1 and 4, the glass laminate 10 is fitted and fixed in a frame 20 having recesses along the short side SS and the long side LS. The frame 20 faces the peripheral edges of the first surface 31 and the fourth surface 34, and sandwiches the first glass sheet 11, the second glass sheet 12, the reinforcing material 15, and the plate-warp suppressing member 16, which will be described later. Specifically, the peripheral edges of the glass laminate 10 are fitted and fixed in the frame 20 by filling the space between the frame 20 and the glass laminate 10 (including the reinforcing material 15 and the plate-warp suppressing member 16) with sealant 21 and sealant 22 all around.

[0044] In this embodiment, a gap filling member 23 is provided in the gap between the plate warp suppression member 16 and the frame body 20. The material constituting the gap filling member 23 is not particularly limited, but in this embodiment, it is made of foamed polyethylene.

[0045] [Regarding reinforcing materials] As shown in FIGS. 2 and 3, a reinforcing member 15 (corresponding to the "connecting member" of the present invention) is provided at the outer edge of the long side LS of the glass laminate 10. In this embodiment, the reinforcing member 15 is formed by bending a plate-like member, and has two support portions 15a extending in a direction along the surface of the glass laminate 10 and a connecting portion 15b located between the two support portions 15a. The reinforcing member 15 is not particularly limited, but in this embodiment it is made of a plate-like member made of SUS304. The thickness of the reinforcing member 15 is preferably 1 mm or more and 5 mm or less, and in this embodiment it is made of 2 mm.

[0046] The two support portions 15a are configured to face the outer edge portions of the first surface 31 and the fourth surface 34, respectively, and extend in a direction along the outer edges. An elastic member 17 (corresponding to the "intermediate member" of the present invention) is provided between the glass laminate 10 and the support portions 15a, that is, between the first surface 31 and the fourth surface 34 and the support portions 15a (plate warp suppressing members 16). The elastic member 17 is not particularly limited, but in this embodiment it is made of synthetic rubber made of ethylene-propylene-diene rubber (EPDM).

[0047] [Regarding plate warp suppression materials] 2 to 4, a plate warp suppression member 16 that suppresses warpage of the glass laminate 10 is provided on the surface of the support portion 15a of the reinforcing material 15 opposite to the surface facing the first surface 31 and the fourth surface 34. The plate warp suppression members 16 are arranged separately on both sides of the glass laminate 10 in the thickness direction of the glass laminate 10. Like the support portion 15a of the reinforcing material 15, the plate warp suppression member 16 is located at a position corresponding to the outer edge portion of the long side LS of the glass laminate 10, and is configured to extend in a direction along the outer edge of the long side LS of the glass laminate 10.

[0048] The plate warp suppression member 16 is made of a plate-like member. The plate-like member is preferably made of a material having a Young's modulus of 154 MPa or more and 232 MPa or less, and more preferably made of a material having a Young's modulus of 174 MPa or more and 212 MPa or less. In this embodiment, the plate warp suppression member 16 is made of SUS304, which has a Young's modulus of 193 MPa.

[0049] The plate warp suppressing members 16 are fixed by welding to the support portions 15a of the reinforcing member 15. With this configuration, the plate warp suppressing members 16 are disposed at outer edge portions of the glass laminate 10 at positions away from the surfaces (first surface 31 and fourth surface 34) of the glass laminate 10 in the thickness direction of the glass laminate 10. The reinforcing member 15 also functions as a connecting member that connects the plate warp suppressing members 16 disposed on one side of the glass laminate 10 in the thickness direction to the plate warp suppressing members 16 disposed on the other side of the glass laminate 10 in the thickness direction. With this configuration, by fixing the plate warp suppressing members 16 to the reinforcing member 15 in advance, it becomes possible to attach the reinforcing member 15 to the glass laminate 10 using the same method as the conventional method for attaching the reinforcing member 15 to the glass laminate 10. Therefore, when the reinforcing member 15 is attached to the glass laminate 10, the plate warp suppressing members 16 are simultaneously attached to the glass laminate 10.

[0050] The plate warp suppressing member 16 is preferably configured as a plate-shaped member having the same thickness as or a thickness greater than that of the reinforcing member 15. Specifically, the thickness of the plate warp suppressing member 16 is preferably 1 mm or more and 7 mm or less, and more preferably 4 mm or more and 6 mm or less. This configuration makes it possible to suitably suppress warpage of the glass laminate 10 while avoiding an increase in the size of the frame 20. In this embodiment, the plate warp suppressing member 16 is configured to have a thickness of 5 mm.

[0051] The longitudinal length of the plate warp suppression member 16 is preferably 1760 mm or more and 2640 mm or less, and more preferably 1980 mm or more and 2420 mm or less. This configuration allows the length to correspond to the long side of a general glass laminate. In this embodiment, the longitudinal length of the plate warp suppression member 16 is configured to be 2105 mm.

[0052] In this embodiment, in the direction along the surface (first surface 31 and fourth surface 34) of the glass laminate 10, the outer end of the plate warp suppression member 16 is configured to be positioned outward from the outer end of the reinforcing material 15.

[0053] [Example] Various glass units were prepared, and the warpage of these glass units was measured. The warpage of the glass units was measured as follows. The glass units were installed with one side facing the indoor side and the other side facing the outdoor side. A temperature difference was created between one side and the other side of the glass unit by heating the outdoor side to a high temperature, and the warpage of the glass laminate (glass) and the frame (joint frame) caused by this temperature difference were measured for each temperature difference.

[0054] As Example 1, a glass unit 100 having the configuration of this embodiment was prepared, that is, one in which the support portion 15a of the reinforcing material 15 extends in a direction along the surface of the glass laminate 10 and the thickness of the plate warp suppression member 16 is 5 mm.

[0055] As Comparative Example 1, a glass unit 100 in Example 1 was prepared from which the plate warp suppressing member 16 was removed.

[0056] As the glass unit 200 of Example 2, as shown in Figure 5, a glass unit was prepared which was equipped with a plate warp suppression member 16' having a thickness of 2 mm instead of the plate warp suppression member 16 of the glass unit 100 of Example 1.

[0057] As a glass unit of Comparative Example 2, a glass unit obtained by removing the plate warp suppressing member 16' from the glass unit 200 of Example 2 was prepared.

[0058] As shown in Fig. 6, glass unit 300 of Example 3 was prepared in which, instead of reinforcing member 15 of glass unit 200 of Example 2, a reinforcing member 15' having supporting portions 15a' configured to approach the surface of glass laminate 10 as it moves inward from the periphery of glass laminate 10, and further, instead of elastic member 17 of glass unit 200 of Example 2, aluminum tape 18 (corresponding to the "intermediate member" of the present invention) and resin material 19 (corresponding to the "intermediate member" of the present invention) were provided. In this case, resin material 19 was provided between aluminum tape 18 and glass laminate 10.

[0059] As a glass unit of Comparative Example 3, a glass unit obtained by removing the plate warp suppressing member 16' from the glass unit 300 of Example 3 was prepared.

[0060] The results of measurements made by the above-mentioned measuring method for Examples 1 to 3 and Comparative Examples 1 to 3 are summarized in Figure 7. Here, warping toward the indoor side was defined as positive (+), and warping toward the outdoor side was defined as negative (-).

[0061] 7(a), the solid line indicates the measurement results of Example 1, and the dashed line indicates the measurement results of Comparative Example 1. It was confirmed that Example 1 had less warpage of the glass laminate 10 and the frame 20 than Comparative Example 1.

[0062] 7(b), the measurement results for Example 2 are shown by a solid line, and the measurement results for Comparative Example 2 are shown by a dashed line. As with Example 1, it was confirmed that Example 2 had less warpage of the glass laminate 10 than Comparative Example 2. Furthermore, it was confirmed that although the frame 20 had slightly greater warpage than Example 1, it had less warpage than Comparative Example 2.

[0063] 7(c), the measurement results for Example 3 are shown by a solid line, and the measurement results for Comparative Example 3 are shown by a dashed line. As with Examples 1 and 2, it was confirmed that Example 3 had less warpage of the glass laminate 10 than Comparative Example 3. Furthermore, it was confirmed that although the frame 20 had slightly greater warpage than Example 1, the warpage was less than that of Comparative Example 3.

[0064] In other words, it was confirmed that, without being limited to the above embodiments, as in Example 2 above, the glass unit 100 of the above embodiment may be configured to have a plate warp suppression member 16' configured to be 2 mm thick instead of the plate warp suppression member 16, and as in Example 3 above, the reinforcing member 15 of the glass unit 100 of the above embodiment may be configured to have a reinforcing member 15' having a support portion 15a' configured to approach the surface of the glass laminate 10 as it moves inward from the periphery of the glass laminate 10, and further, the elastic member 17 of the glass unit 100 of the above embodiment may be configured to have aluminum tape 18 and resin material 19 instead.

[0065] The configuration of the above embodiment makes it possible to suppress warpage of the glass laminate.

[0066] [Another embodiment] Hereinafter, another embodiment in which the above embodiment is modified will be exemplified.

[0067] (1) In the above embodiment, the plate warp suppression member 16 is described as being welded and fixed to the reinforcing material 15, but this configuration is not limited thereto, and the reinforcing material 15 and the plate warp suppression member 16 may be integrally configured.

[0068] (2) In the above embodiment, the plate warp suppression member 16 is provided on the surface of the support portion 15a of the reinforcing material 15 opposite to the surface facing the first surface 31 and the fourth surface 34. However, this configuration is not limited to this. As shown in FIG. 8, the plate warp suppression member 16 may be provided so as to contact the surface of the support portion 15a of the reinforcing material 15 facing the first surface 31 and the fourth surface 34. In other words, the support portion 15a of the reinforcing material 15 may be positioned farther from the glass laminate 10 in the thickness direction of the glass laminate 10 than the plate warp suppression member 16.

[0069] (3) In the above embodiment, the two plate warp suppressing members 16 are each made of a plate-like member and are arranged separately on both sides of the glass laminate 10 in the thickness direction of the glass laminate 10. However, the present invention is not limited to this configuration. For example, the plate warp suppressing members 16 may be formed by bending a single plate-like member, and may be arranged separately on both sides of the glass laminate 10 in the thickness direction of the glass laminate 10, each having two warp suppressing portions extending in a direction along the surface of the glass laminate 10 and a connecting portion provided across the two warp suppressing portions.

[0070] (4) In the above embodiment, the reinforcing material 15 is made of SUS304. However, the reinforcing material 15 is not limited to this. For example, the reinforcing material 15 may be made of SUS316 or the like.

[0071] (5) In the above embodiment, the plate warp suppression member 16 is described as being made of SUS304, but this is not limited to this. The plate warp suppression member 16 may be made of a material having a Young's modulus of 154 MPa or more and 232 MPa or less. For example, the plate warp suppression member 16 may be made of SUS316 or the like.

[0072] The configurations disclosed in the above embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with configurations disclosed in other embodiments, unless a contradiction arises. Furthermore, the embodiments disclosed in this specification are merely examples, and the present invention is not limited to these, and can be modified as appropriate within the scope of the purpose of the present invention. [Industrial Applicability]

[0073] The present invention can be used in glass units. [Explanation of symbols]

[0074] 10: Glass laminate 11: First glass plate 12: Second glass plate 15, 15´: Reinforcement material (connecting member) 15a,15a´: Support part 16, 16´: Plate warp suppression member 17: Elastic member (intermediate member) 18: Aluminum tape (intermediate material) 19: Resin material (intermediate part) 100, 200, 300: Glass unit LS: Long side SS: Short side

Claims

1. a glass laminate including a first glass plate and a second glass plate arranged opposite each other; a plate warp suppression member that is arranged at an outer edge portion of the glass laminate at a position away from a surface of the glass laminate in a thickness direction of the glass laminate and that suppresses warpage of the glass laminate; an intermediate member provided between the glass laminate and the plate warp suppressing member.

2. The plate warp suppression member is provided in plurality, The glass unit according to claim 1 , wherein the plurality of plate warp suppressing members are arranged separately on both sides of the glass laminate in a thickness direction of the glass laminate.

3. 3. The glass unit according to claim 2, further comprising a connecting member that connects the plate warp suppression member arranged on one side of the glass laminate in the thickness direction to the plate warp suppression member arranged on the other side of the glass laminate in the thickness direction.

4. The plate warp suppressing member and the connecting member are formed of plate-shaped members, The glass unit according to claim 3 , wherein the thickness of the plate warp suppressing member is greater than the thickness of the connecting member.

5. The glass unit according to claim 3 or 4, wherein an outer end of the plate warp suppressing member is positioned outward from an outer end of the connecting member in a direction along the surface of the glass laminate.

6. The glass unit according to claim 3 or 4, wherein the plate warp suppressing member and the connecting member are integrally formed.

7. The glass unit according to claim 3 or 4, wherein the connecting member has a support portion that is located at a position farther from the glass laminate in the thickness direction of the glass laminate than the plate warp suppressing member.

8. The glass unit according to claim 1, wherein the plate warp suppression member is arranged on both sides of the glass laminate in the thickness direction of the glass laminate, and has two warp suppression sections each extending in a direction along the surface of the glass laminate, and a connecting section provided across the two warp suppression sections.

9. The glass laminate is configured in a rectangular shape having short sides and long sides, The glass unit according to claim 1 , wherein the plate warp suppressing member is disposed at a position corresponding to an outer edge portion of the long side of the glass laminate.

10. The glass unit according to claim 1 , wherein the plate warp suppression member is made of a stainless steel material.

11. The glass unit according to claim 4 , wherein the thickness of the plate warp suppression member is 1 mm or more and 7 mm or less.

12. 5. The glass unit according to claim 4, wherein the thickness of the connecting member is 1 mm or more and 5 mm or less.

13. 5. The glass unit according to claim 4, wherein the length of the plate warp suppression member is 1760 mm or more and 2640 mm or less.

14. The glass unit according to claim 4 , wherein the Young's modulus of the plate warp suppression member is 154 MPa or more and 232 MPa or less.

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