Double-glazed glass unit

Abstract

To provide a multi-layer glass unit capable of properly holding a multi-layer glass against warpage of the multi-layer glass caused by a temperature difference, and to provide a multi-layer glass to be used for the multi-layer glass unit.SOLUTION: A multi-layer glass unit includes: a frame body 20 including a multi-layer glass 10 having a first glass plate 11, a second glass plate 12, a sealing material and a spacer, opposing to circumferences 8 of a first surface 31 of the first glass plate 11 and a fourth surface 34 of the second glass plate 12, and holding the first glass plate 11 and the second glass plate 12; and a seal part 24 for sealing a clearance between the first surface 31 and the fourth surface 34, and the frame body 20. The seal part 24 has a first seal region 41 opposing to corner portions 8a of the circumferences 8 of the first surface 31 and the fourth surface 34, and a second seal region 42 opposing to a side portion 8b sandwiched by the two corner portions 8a among the circumferences 8 of the first surface 31 and the fourth surface 34, and an elastic modulus of the second seal region 42 is smaller than that of the first seal region 41.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] This invention relates to a double-glazed glass unit. [Background technology]

[0002] Patent Document 1 discloses a double-glazed glass unit in which the peripheral edges of the double-glazed glass are supported by a frame. In the double-glazed glass unit, the double-glazed glass is supported by interposing a gasket between the double-glazed glass and the frame. Double-glazed glass is constructed by sealing the peripheral edges of a pair of glass plates with a sealing material, while having an air gap between the two glass plates. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2000-54748 [Overview of the project] [Problems that the invention aims to solve]

[0004] In the double-glazed glass described in Patent Document 1, when placed outside a building, a temperature difference occurs between the outer and inner glass panes due to the presence of a gap between the pair of glass panes. This temperature difference can cause warping in both the outer and inner glass panes. Although the double-glazed glass is supported by a gasket and frame, the degree of warping differs between the peripheral corners and the center of the periphery of the glass panes. Therefore, if the local warping of the glass pane is large, the gasket may not be able to adequately absorb the warping of the glass pane, and the sealant of the double-glazed glass may be subjected to stress, potentially causing deformation or breakage of the sealant. If the sealant in the double-glazed glass deforms or breaks, air and water may enter the gap between the double-glazed glass, reducing the thermal insulation and durability of the double-glazed glass.

[0005] Therefore, there is a need for a double-glazed glass unit that can properly hold double-glazed glass against warping caused by temperature differences, etc., and for double-glazed glass used in this unit. [Means for solving the problem]

[0006] The characteristic configuration of the double-glazed glass unit according to the present invention is a double-glazed glass having a first glass plate having a first surface and a second surface provided on the back side of the first surface, a second glass plate having a third surface facing the second surface and a fourth surface provided on the back side of the third surface, a sealing material provided around the entire outer edge of the first and second glass plates to seal the insulating space between the first and second glass plates which is insulated, and a spacer disposed between the first and second glass plates which forms the insulating space. The device comprises a frame that faces the periphery of the first and fourth surfaces and holds the first and second glass plates, and a sealing portion that seals the gap between the first and fourth surfaces and the frame, wherein the sealing portion has a first sealing region that faces the corners of the periphery of the first and fourth surfaces, and a second sealing region that faces the side portion between two of the corners of the periphery of the first and fourth surfaces, and the elastic modulus of the second sealing region is smaller than that of the first sealing region.

[0007] In double-glazed glass subjected to temperature differences, the first or second glass pane is more prone to deformation (warping) at the edges between the two corners than at the corners themselves. Therefore, in this configuration, the seal portion placed between the double-glazed glass and the frame is configured such that the elastic modulus of the second seal region facing the edges of the first and second glass panes of the double-glazed glass is smaller than that of the first seal region facing the corners. As a result, deformation (warping) of the edges of the double-glazed glass is more easily tolerated by the second seal region of the seal portion. Consequently, the stress on the sealant of the double-glazed glass can be reduced, thereby improving the durability of the sealant. In this way, a double-glazed glass unit capable of properly holding the double-glazed glass has been realized.

[0008] Another characteristic feature is that the thickness of the second sealing region is greater than the thickness of the first sealing region.

[0009] As in this configuration, the thickness of the second sealing region is greater than the thickness of the first sealing region in the sealing area. This makes the second sealing region more susceptible to elastic deformation when the edges of the double-glazed glass deform. As a result, deformation of the edges of the double-glazed glass is more easily tolerated by the second sealing region of the sealing area.

[0010] Another characteristic feature is that the sealing portions are dispersed within the second sealing region.

[0011] As in this configuration, when the sealing portions are dispersed within the second sealing region, the contact area of ​​the sealing portions with respect to the edges of the double-glazed glass becomes smaller. This makes it easier for deformation of the edges of the double-glazed glass to be tolerated by the second sealing region of the sealing portions.

[0012] The characteristic configuration of the double-glazed glass unit according to the present invention is a double-glazed glass comprising: a first glass plate having a first surface and a second surface provided on the back side of the first surface; a second glass plate having a third surface facing the second surface and a fourth surface provided on the back side of the third surface; a sealing material provided around the entire outer edge of the first and second glass plates to seal the insulated space between the first and second glass plates; and a spacer disposed between the first and second glass plates to form the insulated space; and a frame facing the periphery of the first and fourth surfaces and sandwiching the first and second glass plates; and a sealing portion sealing the gap between the first and fourth surfaces and the frame, wherein the sealing portion faces only the corners of the periphery of the first and fourth surfaces. Furthermore, the sealing material is configured not to come into contact with the sealing portion. It's at a single point. Furthermore, the characteristic configuration of the double-glazed glass unit according to the present invention is that it comprises a double-glazed glass having a first glass plate having a first surface and a second surface provided on the back side of the first surface, a second glass plate having a third surface facing the second surface and a fourth surface provided on the back side of the third surface, a sealing material provided around the entire outer edge of the first and second glass plates to seal the heat insulating space between the first and second glass plates, and a spacer disposed between the first and second glass plates to form the heat insulating space, and further comprising a frame facing the periphery of the first and fourth surfaces and sandwiching the first and second glass plates, and a sealing portion that seals the gap between the first and fourth surfaces and the frame, wherein the sealing portion faces only the corners of the periphery of the first and fourth surfaces and includes a setting block that abuts the end surface of the first glass plate and the end surface of the second glass plate, and the sealing material is configured to abut the setting block.

[0013] As in this configuration, the sealing portion faces only the corners of the periphery of the first surface of the first glass plate and the fourth surface of the second glass plate. As a result, the sealing portion does not face the edge between two of the corners of the periphery of the first and fourth surfaces, and a gap exists between that edge and the frame. Therefore, deformation of the edge of the double-glazed glass is more easily tolerated due to the presence of this gap. Consequently, the stress on the sealant of the double-glazed glass can be reduced, thereby improving the durability of the sealant. In this way, a double-glazed glass unit capable of properly holding double-glazed glass has been realized.

[0014] The characteristic configuration of the double-glazed glass unit according to the present invention is a double-glazed glass comprising: a first glass plate having a first surface and a second surface provided on the back side of the first surface; a second glass plate having a third surface facing the second surface and a fourth surface provided on the back side of the third surface; a sealing material provided around the entire outer edge of the first and second glass plates to seal the insulating space between the first and second glass plates which is insulated; and a spacer disposed between the first and second glass plates which forms the insulating space, and the first surface The glass plate also comprises a frame that faces the periphery of the fourth surface and holds the first glass plate and the second glass plate, and a sealing portion that seals the gap between the first surface and the fourth surface and the frame, wherein the frame has a first frame region that faces the corners of the periphery of the first surface and the fourth surface, and a second frame region that faces the side portion sandwiched between two of the corners of the periphery of the first surface and the fourth surface, and the frame is configured such that the distance between the side portion and the second frame region is greater than the distance between the corner portion and the first frame region.

[0015] As in this configuration, the distance between the edge portion sandwiched between two corners of the periphery of the first and fourth surfaces and the second frame region is greater than the distance between the corners of the periphery of the first and fourth surfaces and the first frame region. This allows for the creation of a thicker sealing portion between the edge portion and the second frame region, or a gap between the sealing portion and the second frame region. As a result, deformation of the edge portion of the double-glazed glass is more easily tolerated between it and the second frame region.

[0016] The characteristic configuration of the multilayer glass unit according to the present invention includes a first glass plate having a first surface and a second surface provided on the back side of the first surface, a third surface facing the second surface, and a second glass plate having a fourth surface provided on the back side of the third surface. A sealing material provided on the entire outer periphery of the first glass plate and the second glass plate and sealing a heat insulating space where the space between the first glass plate and the second glass plate is insulated, and disposed between the first glass plate and the second glass plate A spacer that forms the heat insulating space, and a frame body that faces the peripheral edges of the first surface and the fourth surface and sandwiches the first glass plate and the second glass plate, and a sealing portion that seals a gap between the first surface and the fourth surface and the frame body. The frame body has a first frame body region facing the corner portions of the peripheral edges of the first surface and the fourth surface, and a second frame body region facing the side portions sandwiched between the two corner portions of the peripheral edges of the first surface and the fourth surface. The elastic modulus of the second frame body region is smaller than the elastic modulus of the first frame body region.

[0017] As in this configuration, in the frame body, since the elastic modulus of the second frame body region facing the side portion sandwiched between the two corner portions of the peripheral edges of the first surface and the fourth surface is smaller than the elastic modulus of the first frame body region facing the corner portions of the peripheral edges of the first surface and the fourth surface, the deformation of the side portion of the multilayer glass is more easily allowed due to the presence of the second frame body region. As a result, the stress received by the sealing material of the multilayer glass can be reduced, so that the durability of the sealing material can be improved. Thus, a multilayer glass unit capable of properly holding the multilayer glass has been realized.

[0018] Another characteristic configuration is that a plurality of the spacers are provided, and the plurality of spacers are provided at predetermined intervals.

[0019] According to this configuration, since the plurality of spacers are provided at predetermined intervals, it becomes easier to maintain the interval of the heat insulating space between the first glass plate and the second glass plate by the plurality of spacers.

[0020] Another characteristic configuration is that the heat insulating space is depressurized.

[0021] With the structure as described above, the heat insulation space is depressurized, so that the heat insulation performance of the double-glazed glass can be improved.

[0022] Another characteristic configuration is that the spacer is provided at the peripheries of the first glass plate and the second glass plate.

[0023] With the structure as described above, the spacer is provided at the peripheries of the first glass plate and the second glass plate, so that a sealing material for sealing the heat insulation space provided and insulated around the entire outer periphery of the first glass plate and the second glass plate can be easily arranged.

[0024] Another characteristic configuration is that dry air or an inert gas is enclosed in the heat insulation space.

[0025] With the structure as described above, dry air or an inert gas is enclosed in the heat insulation space, so that the heat insulation performance of the double-glazed glass can be improved.

[0026] Another characteristic configuration is that a Low-E film is laminated on the second surface or the third surface.

[0027] The Low-E film is a film in which a special metal film with low radioactivity is coated to increase the reflectivity in the infrared region having thermal energy. In the double-glazed glass unit of this structure, the first surface of the first glass is set as the outdoor side, and the fourth surface of the second glass plate is set as the outdoor side, and the following description will be made. When the Low-E film is laminated on the second surface, solar heat from the outside is reflected by the Low-E film, so that the heat shielding performance of the double-glazed glass is improved. On the other hand, when the Low-E film is laminated on the third surface, indoor heating heat, etc. is reflected by the Low-E film, so that the heat insulation performance of the double-glazed glass is improved.

[0028] The characteristic configuration of the double-glazed glass according to the present invention is that it is used in any of the double-glazed glass units having the above structures, and includes the first glass plate, the second glass plate, the sealing material, and the spacer.

[0029] The double-glazed glass with this configuration can be properly held in place when used in the double-glazed glass unit with the above configuration. [Brief explanation of the drawing]

[0030] [Figure 1] This is a front view of the double-glazed glass unit of the first embodiment. [Figure 2] This is a cross-sectional view taken along the line II-II in Figure 1. [Figure 3] This is a cross-sectional view taken along the line III-III in Figure 1. [Figure 4] This is a schematic cross-sectional view of a conventional double-glazed glass unit. [Figure 5] This is a schematic cross-sectional view of the double-glazed glass unit of the first embodiment. [Figure 6] This is a longitudinal cross-sectional view of a modified example of the first embodiment. [Figure 7] This is a partial cross-sectional view of the second embodiment. [Figure 8] This is a partial cross-sectional view of the third embodiment. [Figure 9] This is a partial cross-sectional view of the fourth embodiment. [Figure 10] This is a partial cross-sectional view of the fifth embodiment. [Figure 11] This is a partial cross-sectional view of the sixth embodiment. [Figure 12] This is a partial longitudinal cross-sectional view of another embodiment. [Figure 13] This is a partial longitudinal cross-sectional view of another embodiment. [Modes for carrying out the invention]

[0031] Embodiments of the double-glazed glass unit according to the present invention will be described below with reference to the drawings. However, the invention is not limited to the embodiments described below, and various modifications are possible without departing from the spirit of the invention.

[0032] [First Embodiment] A first embodiment of the double-glazed glass unit (hereinafter referred to as "glass unit") 100 according to the present invention will be described with reference to Figures 1 to 5. The glass unit 100 comprises a double-glazed glass 10, a frame 20, and a sealing portion 24 disposed between the double-glazed glass 10 and the frame 20.

[0033] As shown in Figure 2, the double-glazed glass 10 is composed of a first glass plate 11, a second glass plate 12, and a sealing material 13 and a spacer 14 placed between the first glass plate 11 and the second glass plate 12. The sealing material 13 is provided around the entire outer edge of the first glass plate 11 and the second glass plate 12, sealing the insulated space 5 between the first glass plate 11 and the second glass plate 12. The spacer 14 is placed between the first glass plate 11 and the second glass plate 12, forming the insulated space 5. The insulated space 5 is filled with, for example, dry air or an inert gas. The spacer 14 is made of resin. The sealing material 13 is located on the outer periphery of the double-glazed glass 10, further away from the spacer 14, to block the flow between the insulated space 5 and the outside air. The first glass plate 11 is a heat-resistant glass having a first surface 31 and a second surface 32 provided on the back side of the first surface 31. The second glass plate 12 is a Low-E glass having 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. In this embodiment, the first surface 31 of the first glass plate 11 is positioned on the outdoor side.

[0034] As shown in Figures 1 and 2, the double-glazed glass 10 is rectangular in shape with four edges 8 and is fitted and fixed into a frame 20 having recesses along the edges 8. The frame 20 faces the edges 8 of the first surface 31 and the fourth surface 34 and holds the first glass plate 11 and the second glass plate 12. In this embodiment, the frame 20 is a fixed frame for a sash having recesses. A setting block 22, which has a protective function for the end face 4 of the double-glazed glass 10, is installed on the bottom surface of the recess of the frame 20 into which the four sides of the double-glazed glass 10 are fitted. The end face 4 of the double-glazed glass 10 includes the end face 16 of the first glass plate 11, the end face of the sealing material 13, and the end face 17 of the second glass plate 12. The setting blocks 22 only need to be installed at several locations on the lower end of the double-glazed glass 10 to the extent that they can adequately distribute and support the weight of the double-glazed glass 10. They do not need to be installed over the entire area of ​​all four sides of the double-glazed glass 10, but they may be installed over the entire area of ​​all four sides of the double-glazed glass 10.

[0035] A backup material 23 is provided between the double-glazed glass 10 and the frame 20 to secure the double-glazed glass 10 to the frame 20. Furthermore, a sealing portion 24 is provided between the double-glazed glass 10 and the frame 20. The sealing portion 24 is positioned around the periphery 8 of the first glass plate 11 and the second glass plate 12 to prevent water from entering the recess of the frame 20. The sealing portion 24 can also block the flow between the insulated space 5 and the outside air if the double-glazed glass 10 does not have a sealing material 13. In this way, the double-glazed glass 10 is configured to be sandwiched in the frame 20 via the sealing portion 24, and the gap between the glass and the frame 20 is filled by the sealing portion 24. The sealing portion 24 is made of various elastic rubbers or resins.

[0036] As shown in Figures 1 and 3, the seal portion 24 has a first seal region 41 facing the corners 8a of the periphery 8 of the first surface 31 and the fourth surface 34, and a second seal region 42 facing the edge portion 8b between two corners 8a, 8a of the periphery 8 of the first surface 31 and the fourth surface 34. Here, in the seal portion 24, the elastic modulus of the second seal region 42 is smaller than that of the first seal region 41. The elastic modulus of the first seal region 41 is 0.2 N / mm 2 More than 2.0N / mm 2Preferably, it is 0.4 N / mm 2 More than 1.0N / mm 2 It is even more preferable that the following conditions are met: The modulus of elasticity of the second seal region 42 is 0.01 N / mm². 2 More than 0.4N / mm 2 Preferably, it is 0.1 N / mm 2 More than 0.2N / mm 2 The following is even more preferable: In the sealing portion 24, the first sealing area 41 and the second sealing area 42 are made of different rubbers or resins. The sealing portion 24 may be formed by bonding or welding the sealing material of the first sealing area 41 and the sealing material of the second sealing area 42 together, or they may be arranged without being joined.

[0037] The effects and advantages of this embodiment will be explained below using Figures 4 and 5. Figure 4 is a schematic cross-sectional view showing the configuration of a conventional glass unit 200, and Figure 5 is a schematic cross-sectional view showing the configuration of the glass unit 100 of this embodiment.

[0038] In the conventional glass unit 200 shown in Figure 4, the elastic modulus of the seal portion 24a is the same throughout. The first glass plate 11 and the second glass plate 12 expand when heated to a high temperature and contract when cooled to a low temperature. In the glass unit 200, for example, let's assume the second glass plate 12 is heated. In that case, since the end face 17 of the second glass plate 12 is in contact with the frame 20 (setting block 22), the second glass plate 12 cannot expand along the plate surface and deforms perpendicular to the plate surface, causing it to warp. However, the seal portion 24a and the frame 20 are located opposite the plate surface of the second glass plate 12. Therefore, the deformation of the second glass plate 12 perpendicular to the plate surface is restricted by the seal portion 24a and the frame 20, and the second glass plate 12 receives stress from the seal portion 24a.

[0039] The stress exerted on the second glass plate 12 by the seal portion 24a also occurs in the direction along the plate surface of the second glass plate 12, acting as shear stress between the second glass plate 12 and the sealing material 13. This shear stress may cause delamination at the interface between the second glass plate 12 and the sealing material 13, in which case the airtightness of the thermal insulation space 5 will be lost and the thermal insulation performance of the glass unit 200 will be impaired.

[0040] On the other hand, in the glass unit 100 of this embodiment shown in Figure 5, the edge portion 8b (central portion) sandwiched between the two corner portions 8a of the second glass plate 12 faces the second seal region 42 of the seal portion 24, which has a lower elastic modulus. Therefore, when the second glass plate 12 bends toward the second seal region 42, the second seal region 42 absorbs the bending of the second glass plate 12. In other words, the second seal region 42 exhibits a buffering function that absorbs the bending of the second glass plate 12. As a result, the stress received by the second glass plate 12 from the seal portion 24 can be reduced, and the shear stress acting on the second glass plate 12 becomes smaller. As a result, peeling of the sealing material 13 is suppressed, and the airtightness of the thermal insulation space 5 can be properly maintained.

[0041] The glass unit 100 has a Low-E film 12a laminated over the entire surface of the third surface 33 of the second glass plate 12. The Low-E film 12a consists of a single layer of metal, or a multilayer formed by laminating two or more layers selected from a metal layer, a metal oxide layer, a metal nitride layer, and a metal oxynitride layer. A suitable example of a metal layer is a silver layer. Suitable examples of a metal oxide layer are a tin oxide layer, a titanium oxide layer, or a zinc oxide layer. A suitable example of a metal nitride layer is silicon nitride. A suitable example of a metal oxynitride layer is silicon oxynitride. Vacuum deposition methods such as physical vapor deposition (PVD) are preferred for the Low-E film 12a, and sputtering is particularly preferred because it can uniformly deposit a film over a large area.

[0042] The Low-E film 12a is a film coated with a special low-emissivity metal film to increase its reflectivity in the infrared region, which has thermal energy. In the glass unit 100, the first surface 31 of the first glass plate 11 is considered the exterior side, and the fourth surface 34 of the second glass plate 12 is considered the exterior side, as described below. When the Low-E film 12a is laminated on the third surface 33, indoor heating heat is reflected by the Low-E film 12a, thus improving the thermal insulation performance of the double-glazed glass 10. The Low-E film 12a may also be laminated on the second surface 32. In this case, solar heat from outside is reflected by the Low-E film 12a laminated on the second surface 32, thus improving the heat shielding performance of the double-glazed glass 10.

[0043] Since the backup material 23 and the sealing portion 24 are components for supporting the double-glazed glass 10 on the frame 20, they are made of a resin or rubber with a certain degree of elasticity so as not to damage the double-glazed glass 10.

[0044] [Modification of the first embodiment] As shown in Figure 6, the double-glazed glass 10 may be made of a vacuum-sealed double-glazed glass in which the thermal insulation space 5 is reduced in pressure. In the double-glazed glass 10 shown in Figure 6, there are multiple spacers 14 between the second surface 32 and the third surface 33, and the multiple spacers 14 are provided at predetermined intervals on the plate surfaces of the second surface 32 and the third surface 33.

[0045] Multiple spacers 14 are composed of, for example, cylindrical columns. These columns are made of ceramics such as alumina or zirconia. The columns may also contain nanoparticle fillers such as zirconia.

[0046] [Second Embodiment] A second embodiment of the glass unit 100 will be described with reference to Figure 7. Components similar to those in the first embodiment are given the same numbers, and their explanation here is omitted.

[0047] In this embodiment, as shown in FIG. 7, the frame body 20 has a first frame body region 26 facing the corner portions 8a of the periphery 8 of the first surface 31 and the fourth surface 34, and a second frame body region 27 facing the side portions 8b sandwiched between two corner portions 8a of the periphery 8 of the first surface 31 and the fourth surface 34. Here, the elastic modulus of the second frame body region 27 is smaller than the elastic modulus of the first frame body region 26. The elastic modulus of the first frame body region 26 is preferably 2 250 N / mm or less, and more preferably 2 70 N / mm or more and 2 150 N / mm or less. The elastic modulus of the second frame body region 27 is preferably 2 0.1 N / mm or more and 2 70 N / mm or less, and more preferably 2 30 N / mm or more and 2 70 N / mm or less. 2

[0048] In the second embodiment, in the frame body 20, since the elastic modulus of the second frame body region 27 is smaller than the elastic modulus of the first frame body region 26, the deformation of the side portion 8b of the multilayer glass 10 is more easily allowed by the second frame body region 27. Further, although the frame body 20 itself is also deformed by heat and the second frame body region 27 is more likely to warp than the first frame body region 26, by reducing the elastic modulus of the second frame body region 27, the stress transmitted to the multilayer glass 10 due to the deformation of the frame body 20 is relaxed. As a result, the stress received by the sealing material 13 of the multilayer glass 10 can be reduced, so that the durability of the sealing material 13 can be improved.

[0049] 〔Third Embodiment〕 A third embodiment of the glass unit 100 will be described based on FIG. 8. The same members as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted here.

[0050] As shown in Figure 8, in this embodiment, the frame 20 has a first frame region 26 facing the corner 8a and a second frame region 27 facing the edge 8b of the periphery 8 of the first surface 31 and the fourth surface 34. The second frame region 27 is further away from the edge 8b than the first frame region 26, and the distance between the edge 8b and the second frame region 27 is greater than the distance between the corner 8a and the first frame region 26 in a direction perpendicular to the surface of the glass plates 11 and 12.

[0051] In the sealing portion 24, the second sealing region 42 is positioned across the edge portion 8b and the second frame region 27. Therefore, the thickness of the second sealing region 42 in the sealing portion 24 is greater than the thickness of the first sealing region 41. Because the second sealing region 42, which is thicker than the first sealing region 41, faces the edge portion 8b of the double-glazed glass 10, the second sealing region 42 is more easily elastically deformed when the edge portion 8b deforms. As a result, the deformation of the edge portion 8b of the double-glazed glass 10 is more easily tolerated by the second sealing region 42 of the sealing portion 24. Consequently, the stress on the sealant 13 of the double-glazed glass 10 can be reduced, thereby improving the durability of the sealant 13.

[0052] [Fourth Embodiment] A fourth embodiment of the glass unit 100 will be described with reference to Figure 9. Components similar to those in the first embodiment are given the same numbers, and their explanation is omitted here.

[0053] In this embodiment as well, as in the third embodiment, as shown in Figure 9, the frame 20 has a first frame region 26 and a second frame region 27, and the second frame region 27 is further away from the edge portion 8b than the first frame region 26, and the distance between the edge portion 8b and the second frame region 27 is greater than the distance between the corner portion 8a and the first frame region 26 in a direction perpendicular to the surface of the glass plates 11 and 12.

[0054] However, unlike the third embodiment, in this embodiment the sealing portion 24 is configured to have a constant thickness. Therefore, the first sealing region 41 and the second sealing region 42 have the same thickness, and a gap 50 is formed between the second sealing region 42 and the second frame region 27.

[0055] With this configuration, deformation of the edge portion 8b of the double-glazed glass 10 is more easily tolerated due to the presence of the void 50. In addition, although the frame 20 itself deforms due to heat, and the second frame region 27 is more prone to warping than the first frame region 26, the presence of the void 50 prevents stress caused by the deformation of the frame 20 from being transmitted to the double-glazed glass 10. As a result, the stress on the sealant 13 of the double-glazed glass 10 can be reduced, thereby improving the durability of the sealant 13. In this embodiment, the elastic modulus of the first seal region 41 and the elastic modulus of the second seal region 42 of the seal portion 24 may be the same.

[0056] [Fifth Embodiment] A fifth embodiment of the glass unit 100 will be described with reference to Figure 10. Components similar to those in the first embodiment are given the same numbers, and their explanation here is omitted.

[0057] In this embodiment, as shown in Figure 10, the sealing portion 24 has a first sealing region 41 in the region facing the corner 8a, but not in the region facing the edge 8b. Therefore, the sealing portion 24 faces only the corners 8a of the periphery 8 of the first surface 31 and the fourth surface 34. As a result, the sealing portion 24 does not face the edges 8b of the first surface 31 and the fourth surface 34, and a gap 51 exists between the edges 8b and the frame 20. Therefore, deformation of the edges 8b of the double-glazed glass 10 is more easily tolerated due to the presence of this gap 51. In addition, the frame 20 itself deforms due to heat, and the second frame region 27 is more prone to warping than the first frame region 26, but due to the presence of the gap 51, stress caused by the deformation of the frame 20 is not transmitted to the double-glazed glass 10. As a result, the stress on the sealing material 13 of the double-glazed glass 10 can be reduced, and the durability of the sealing material 13 can be improved.

[0058] [Sixth Embodiment] A sixth embodiment of the glass unit 100 will be described with reference to Figure 11. Components similar to those in the first embodiment are given the same numbers, and their explanation is omitted here.

[0059] In this embodiment, as shown in Figure 11, the sealing portions 24 are dispersed within the second sealing region 42. When the sealing portions 24 are dispersed within the second sealing region 42, the contact area of ​​the sealing portions 24 with respect to the edges 8b of the double-glazed glass 10 is reduced. As a result, deformation of the edges 8b of the double-glazed glass 10 is more easily tolerated by the second sealing region 42 of the sealing portions 24. Consequently, the stress on the sealant 13 of the double-glazed glass 10 can be reduced, thereby improving the durability of the sealant 13.

[0060] [Other embodiments] (1) The glass unit 100 may also be configured such that the sealing portion 24 is supported by a glazing channel 29 used to attach it to the sash frame 28, as shown in Figure 12. In this case, the glazing channel 29 corresponds to a frame that holds the first glass plate 11 and the second glass plate 12.

[0061] (2) The glass unit 100 may have a shape in which the sealing portion 24 has a plurality of protrusions 43 on the outer surface that is facing the frame 20, as shown in Figure 13.

[0062] (3) In the above embodiment, an example was shown in which the second seal region 42 in the seal portion 24 is composed of a single seal material, but the second seal region 42 may be composed of multiple seal materials having different elastic moduli. The multiple seal materials having different elastic moduli may be arranged such that, for example, the elastic moduli become smaller towards the center in the longitudinal direction of the second seal region 42. By arranging multiple seal materials in the second seal region 42 in this way, the warping absorption performance of the double-glazed glass 10 in the second seal region 42 can be further improved. Alternatively, an additive may be mixed into a single seal material as the seal portion 24, and then the amount of the additive may be changed in the first seal region 41 and the second seal region 42 so that the elastic moduli of the second seal region 42 is smaller than that of the first seal region 41.

[0063] (4) In the above embodiment, an example was shown in which the frame 20 is a fixed frame for a sash, but the frame 20 is not limited to a fixed frame for a sash, and may have other configurations such as a pair of L-shaped angles.

[0064] (5) In the above embodiment, an example was shown in which the glass unit 100 includes a setting block 22 and a backup material 23, but the glass unit 100 may be configured without having one or both of the setting block 22 and the backup material 23.

[0065] (6) In the above embodiment, the glass plates 11 and 12 were made of heat-resistant glass or Low-E glass, but they may also be made of soda glass or tempered glass. [Industrial applicability]

[0066] This invention can be widely applied to double-glazed glass units and double-glazed glass. [Explanation of Symbols]

[0067] 4,16,17: End face 5: Insulated space 8: Periphery 8a: Corner 8b: Edge 10: Double-glazed glass 11: First glass plate 12: Second glass plate 12a:Low-E membrane 13: Sealing material 14: Spacer 20:Frame body 24: Seal part 24a: Seal part 26: First frame region 27: Second Frame Region 31: 1st page 32: 2nd side 33:Third side 34:Side 4 41: First seal area 42: Second seal area 50,51 :Void 100: Glass unit (double-glazed glass unit)

Claims

1. A first glass plate having a first surface and a second surface provided on the back side of the first surface, A second glass plate having a third surface facing the second surface and a fourth surface provided on the back side of the third surface, A sealing material provided around the entire outer edge of the first glass plate and the second glass plate, which seals the insulating space between the first glass plate and the second glass plate, The double-glazed glass comprises a spacer disposed between the first glass plate and the second glass plate to form the thermal insulation space, A frame that faces the periphery of the first and fourth surfaces and holds the first and second glass plates, It comprises a sealing portion that seals the gap between the first surface and the fourth surface and the frame, The sealing portion faces only the corners of the peripheral edges of the first and fourth surfaces, The sealing material is configured not to come into contact with the sealing portion in the double-glazed glass unit.

2. A first glass plate having a first surface and a second surface provided on the back side of the first surface, A second glass plate having a third surface facing the second surface and a fourth surface provided on the back side of the third surface, A sealing material provided around the entire outer edge of the first glass plate and the second glass plate, which seals the insulating space between the first glass plate and the second glass plate, The double-glazed glass comprises a spacer disposed between the first glass plate and the second glass plate to form the thermal insulation space, A frame that faces the periphery of the first and fourth surfaces and holds the first and second glass plates, It comprises a sealing portion that seals the gap between the first surface and the fourth surface and the frame, The sealing portion faces only the corners of the peripheral edges of the first and fourth surfaces, The device includes a setting block that contacts the end face of the first glass plate and the end face of the second glass plate, The sealing material is a double-glazed glass unit configured to contact the setting block.

3. The double-glazed glass unit according to claim 1 or 2, wherein it has a plurality of spacers, and the plurality of spacers are provided at predetermined intervals.

4. The double-glazed glass unit according to claim 3, wherein the aforementioned insulating space is depressurized.

5. The double-glazed glass unit according to claim 1 or 2, wherein the spacer is provided on the periphery of the first glass plate and the second glass plate.

6. The double-glazed glass unit according to claim 5, wherein dry air or an inert gas is sealed in the aforementioned insulating space.

7. A double-layered glass unit according to any one of claims 1 to 6, wherein a Low-E film is laminated on the second or third surface.

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