Multi-layer 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] The present invention relates to a double glazing unit. [Background technology]

[0002] Patent Document 1 discloses a double-glazing unit in which the peripheral edges of the double-glazing glass are supported by a frame. In the double-glazing unit, a gasket is interposed between the double-glazing glass and the frame to support the double-glazing glass. The double-glazing glass is constructed by sealing the peripheral edges of a pair of glass sheets with a sealant, with a gap between the pair of glass sheets. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-54748 Summary of the Invention [Problem to be solved by the invention]

[0004] When the double-glazed glass described in Patent Document 1 is placed outdoors, a temperature difference occurs between the exterior and interior glass panes due to the presence of a gap between the pair of glass panes. This temperature difference can cause warping of the exterior and interior glass panes. Although the double-glazed glass is supported by a gasket and a frame, the degree of warping varies between the corners and the center of the glass panes. Therefore, if the glass panes are locally warped, the gasket cannot fully absorb the warping, and the sealant in the double-glazed glass may be subjected to stress, resulting in deformation or breakage. If the sealant in the double-glazed glass is deformed or broken, air or water may enter the gap in the double-glazed glass, reducing the insulating properties and durability of the double-glazed glass.

[0005] Therefore, there is a demand for a double-glazing unit that can properly hold the double-glazing glass against warping due to temperature differences and the like, and for double-glazing glass to be used in such a double-glazing unit. [Means for solving the problem]

[0006] A characteristic configuration of a double-glazing unit according to the present invention is a double-glazing unit 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 opposite the second surface and a fourth surface provided on the back side of the third surface; a sealant provided around the entire outer edges of the first glass plate and the second glass plate, sealing an insulating space between the first glass plate and the second glass plate; and a spacer disposed between the first glass plate and the second glass plate, forming the insulating space. and a frame facing the peripheral edges of the first surface and the fourth surface and sandwiching the first glass plate and the second glass plate, and a sealing portion sealing a gap between the first surface and the fourth surface and the frame, wherein the sealing portion has a first sealing region facing corners of the peripheral edges of the first surface and the fourth surface, and a second sealing region facing sides sandwiched between two of the corners of the peripheral edges of the first surface and the fourth surface, and the elastic modulus of the second sealing region is smaller than the elastic modulus of the first sealing region.

[0007] In double-glazed glass exposed to temperature differences, deformation (warping) is more likely to occur in the side portions of the periphery of the first or second glass pane sandwiched between the two corners than in the corners. Therefore, in this configuration, the seal disposed between the double-glazed glass and the frame is configured so that the modulus of elasticity of the second seal region facing the side portions of the periphery of the first and second glass panes of the double-glazed glass is smaller than the modulus of elasticity of the first seal region facing the corners. This makes it easier for deformation (warping) of the side portions of the double-glazed glass to be tolerated by the second seal region of the seal. As a result, the stress on the sealing material of the double-glazed glass can be reduced, thereby improving the durability of the sealing material. In this way, a double-glazed glass unit capable of properly holding double-glazed glass has been realized.

[0008] Another characteristic feature of the seal portion is that the thickness of the second seal area is greater than the thickness of the first seal area.

[0009] In this configuration, the thickness of the second seal region in the seal portion is greater than the thickness of the first seal region, which makes it easier for the second seal region to elastically deform when the edge of the double-glazing unit deforms, and therefore makes it easier for the second seal region of the seal portion to tolerate deformation of the edge of the double-glazing unit.

[0010] Another characteristic feature is that the seal portions are distributed and arranged in the second seal region.

[0011] In this configuration, the seal portions are dispersed in the second seal region, which reduces the contact area of the seal portions with the edges of the insulating glass, making it easier for the second seal region of the seal portions to tolerate deformation of the edges of the insulating glass.

[0012] The double-glazing unit of the present invention is characterized by comprising double-glazing having a first glass plate having a first side and a second side located on the back side of the first side, a second glass plate having a third side opposite the second side and a fourth side located on the back side of the third side, a sealant located around the entire outer edges of the first glass plate and the second glass plate for sealing an insulating space between the first glass plate and the second glass plate, and a spacer disposed between the first glass plate and the second glass plate for forming the insulating space, and further comprising: a frame facing the peripheral edges of the first side and the fourth side and holding the first glass plate and the second glass plate together; and a sealant sealing the gap between the first side and the fourth side and the frame, wherein the sealant faces only the corners of the peripheral edges of the first side and the fourth side.

[0013] In this configuration, the seal portion faces only the corners of the edges of the first surface of the first glass sheet and the fourth surface of the second glass sheet. Therefore, the seal portion does not face the edge portion sandwiched between two corners of the edges of the first and fourth surfaces, leaving a gap between the edge portion and the frame. Therefore, the presence of this gap makes it easier to tolerate deformation of the edge portion of the double-glazed glass. As a result, the stress on the sealing material of the double-glazed glass can be reduced, improving the durability of the sealing material. This allows for the realization of a double-glazed glass unit that can properly hold the double-glazed glass.

[0014] A characteristic configuration of the double-glazing unit according to the present invention is a double-glazing unit 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 opposite the second surface and a fourth surface provided on the back side of the third surface; a sealant provided around the entire outer edges of the first glass plate and the second glass plate to seal an insulating space between the first glass plate and the second glass plate; and a spacer disposed between the first glass plate and the second glass plate to form the insulating space; and a frame body facing the peripheral edges of the fourth surface and sandwiching the first glass plate and the second glass plate, and a sealing portion sealing a gap between the first surface and the fourth surface and the frame body, wherein the frame body has a first frame body region facing the corners of the peripheral edges of the first surface and the fourth surface, and a second frame body region facing the side portions sandwiched between two of the corners of the peripheral edges of the first surface and the fourth surface, and the frame body is configured such that the distance between the side portions and the second frame body region is greater than the distance between the corner portions and the first frame body region.

[0015] In this configuration, the distance between the second frame region and the side edge sandwiched between two corners of the periphery of the first and fourth faces of the frame is greater than the distance between the first frame region and the corner of the periphery of the first and fourth faces, making it possible to provide a thick seal between the side edge and the second frame region or an air gap between the seal and the second frame region, which makes it easier for deformation of the side edge of the double-glazed glass to be tolerated between the second frame region and the side edge.

[0016] A characteristic configuration of the double-glazing unit of the present invention is a double-glazing unit 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 opposite the second surface and a fourth surface provided on the back side of the third surface; a sealant provided around the entire outer edges of the first glass plate and the second glass plate to seal an insulating space between the first glass plate and the second glass plate; and a spacer disposed between the first glass plate and the second glass plate to form the insulating space. The glass substrate further comprises 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 the gap between the first surface and the fourth surface and the frame body, wherein the frame body has a first frame body region that faces the corners of the peripheral edges of the first surface and the fourth surface, and a second frame body region that faces the sides that are sandwiched between two of the corners of the peripheral edges of the first surface and the fourth surface, and the elastic modulus of the second frame body region is smaller than the elastic modulus of the first frame body region.

[0017] In this configuration, the elastic modulus of the second frame region facing the edge between two corners of the periphery of the first and fourth faces is smaller than the elastic modulus of the first frame region facing the corner of the periphery of the first and fourth faces. This makes it easier for the second frame region to tolerate deformation of the edge of the double-glazed glass. As a result, the stress on the sealing material of the double-glazed glass can be reduced, improving the durability of the sealing material. In this way, a double-glazed glass unit capable of properly holding the double-glazed glass has been realized.

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

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

[0020] Another characteristic feature is that the heat insulating space is decompressed.

[0021] By reducing the pressure in the insulating space as in this configuration, the insulating performance of the double glazing can be improved.

[0022] Another characteristic feature is that the spacers are provided on the peripheries of the first glass plate and the second glass plate.

[0023] In this configuration, by providing spacers around the periphery of the first glass plate and the second glass plate, it is possible to easily position a sealant that seals the insulated space provided around the entire outer edge of the first glass plate and the second glass plate.

[0024] Another characteristic feature is that the heat insulating space is filled with dry air or an inert gas.

[0025] As in this configuration, by sealing dry air or an inert gas in the insulating space, the insulating performance of the double glazing can be improved.

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

[0027] Low-E coating is a special low-emissivity metal coating that increases reflectivity in the infrared range, which carries thermal energy. In the following explanation of this double-glazed unit, the first surface of the first glass pane faces the outside, and the fourth surface of the second glass pane faces the outside. By laminating Low-E film on the second surface, the solar heat from outside is reflected by the Low-E film, improving the heat-shielding performance of the double-glazed glass. On the other hand, by laminating Low-E film on the third surface, the heat from indoor heating and other sources is reflected by the Low-E film, improving the heat-insulating performance of the double-glazed glass.

[0028] The characteristic configuration of the double-glazing glass of the present invention is that it is used in any of the double-glazing glass units having the above configurations and comprises the first glass plate, the second glass plate, the sealing material, and the spacer.

[0029] The double glazing having this configuration can be properly maintained by being used in the double glazing unit having the above configuration. [Brief explanation of the drawings]

[0030] [Figure 1] 1 is a front view of a double-glazing unit according to a first embodiment. [Figure 2] FIG. 2 is a cross-sectional view taken along the line II-II in FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along the line III-III in FIG. [Figure 4] 1 is a schematic cross-sectional view of a conventional double glazing unit. [Figure 5] 1 is a schematic cross-sectional view of a double glazing unit according to a first embodiment. [Figure 6] FIG. 10 is a vertical cross-sectional view of a modified example of the first embodiment. [Figure 7] FIG. 10 is a partial cross-sectional view of the second embodiment. [Figure 8] FIG. 10 is a partial cross-sectional view of a third embodiment. [Figure 9] FIG. 10 is a partial cross-sectional view of a fourth embodiment. [Figure 10] FIG. 10 is a partial cross-sectional view of the fifth embodiment. [Figure 11] FIG. 10 is a partial cross-sectional view of the sixth embodiment. [Figure 12] FIG. 10 is a partial vertical cross-sectional view of another embodiment. [Figure 13] FIG. 10 is a partial vertical cross-sectional view of another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0031] Hereinafter, embodiments of the double glazing unit according to the present invention will be described with reference to the drawings. However, the present invention is not limited to the following embodiments and various modifications are possible without departing from the spirit and scope of the present invention.

[0032] [First embodiment] A first embodiment of a double-glazing 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-glazing unit 10, a frame 20, and a seal 24 disposed between the double-glazing unit 10 and the frame 20.

[0033] As shown in FIG. 2 , the double-glazed glass 10 is composed of a first glass sheet 11, a second glass sheet 12, and a sealant 13 and spacer 14 disposed between the first glass sheet 11 and the second glass sheet 12. The sealant 13 is disposed around the entire outer periphery of the first glass sheet 11 and the second glass sheet 12 and seals the insulating space 5 between the first glass sheet 11 and the second glass sheet 12. The spacer 14 is disposed between the first glass sheet 11 and the second glass sheet 12 and forms the insulating space 5. The insulating space 5 is filled with, for example, dry air or an inert gas. The spacer 14 is made of resin. The sealant 13 is located closer to the outer periphery of the double-glazed glass 10 than the spacer 14 and blocks communication between the insulating space 5 and outside air. The first glass sheet 11 is heat-resistant glass having a first surface 31 and a second surface 32 disposed 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 disposed on the outdoor side.

[0034] As shown in Figures 1 and 2, the double-glazing glass 10 is rectangular with four peripheral edges 8 and is fitted and fixed into a frame 20 having a recess along the peripheral edges 8. The frame 20 faces the peripheral edges 8 of the first surface 31 and the fourth surface 34, and holds the first glass sheet 11 and the second glass sheet 12 between them. In this embodiment, the frame 20 is a fixing frame for a sash having a recess. A setting block 22, which functions to protect the edge 4 of the double-glazing glass 10, is installed on the bottom surface of the recess of the frame 20, into which the four sides of the double-glazing glass 10 are fitted. The edge 4 of the double-glazing glass 10 includes the edge 16 of the first glass sheet 11, the edge of the sealant 13, and the edge 17 of the second glass sheet 12. The setting blocks 22 only need to be installed in several locations at the lower end of the double-glazed glass 10 to an extent that they can sufficiently distribute and support the weight of the double-glazed glass 10, and although they do not need to be installed over the entire area of the four sides of the double-glazed glass 10, they may be installed over the entire area of the four sides of the double-glazed glass 10.

[0035] To secure the double-glazing glass 10 to the frame 20, a backup material 23 is provided between the double-glazing glass 10 and the frame 20. Furthermore, a seal 24 is provided between the double-glazing glass 10 and the frame 20. The seal 24 is arranged on the periphery 8 of the first glass sheet 11 and the second glass sheet 12, and prevents water from entering the recess in the frame 20. The seal 24 can also block communication between the insulating space 5 and the outside air when the double-glazing glass 10 does not have a sealant 13. In this way, the double-glazing glass 10 can be held between the frame 20 via the seal 24, and the gap between the double-glazing glass 10 and the frame 20 is filled by the seal 24. The seal 24 is made of various elastic rubbers or resins.

[0036] 1 and 3, the seal portion 24 has a first seal area 41 facing a corner 8a of the periphery 8 of the first surface 31 and the fourth surface 34, and a second seal area 42 facing a side 8b sandwiched 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 modulus of elasticity of the second seal area 42 is smaller than the modulus of elasticity of the first seal area 41. The modulus of elasticity of the first seal area 41 is 0.2 N / mm 2 More than 2.0N / mm 2Preferably, it is 0.4 N / mm or less. 2 More than 1.0N / mm 2 The elastic modulus of the second sealing area 42 is more preferably 0.01 N / mm 2 More than 0.4N / mm 2 Preferably, it is 0.1 N / mm or less. 2 More than 0.2N / mm 2 It is more preferable that the following is true: In the seal portion 24, the first seal region 41 and the second seal region 42 are made of different rubbers or resins. In the seal portion 24, the seal material of the first seal region 41 and the seal material of the second seal region 42 may be integrated by bonding or welding, or may be arranged without being joined.

[0037] The effects of this embodiment will be described below with reference to 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 a glass unit 100 of this embodiment.

[0038] In the conventional glass unit 200 shown in FIG. 4, the seal portion 24a has the same elastic modulus throughout. The first glass sheet 11 and the second glass sheet 12 expand when heated to high temperatures and contract when cooled to low temperatures. In the glass unit 200, for example, assume that the second glass sheet 12 is heated. In this case, because the end face 17 of the second glass sheet 12 abuts against the frame 20 (setting block 22), the second glass sheet 12 cannot expand along the sheet surface and deforms and warps in a direction perpendicular to the sheet surface. However, the seal portion 24a and the frame 20 are located opposite the sheet surface of the second glass sheet 12. Therefore, deformation of the second glass sheet 12 in a direction perpendicular to the sheet surface is restricted by the seal portion 24a and the frame 20, and the second glass sheet 12 is subjected to stress from the seal portion 24a.

[0039] The stress that the second glass plate 12 receives from the seal portion 24a also occurs in the direction along the plate surface of the second glass plate 12, and acts as a shear stress between the second glass plate 12 and the sealing material 13. This shear stress may cause peeling at the interface between the second glass plate 12 and the sealing material 13, in which case the airtightness of the insulating space 5 will be lost and the insulating properties of the glass unit 200 will be impaired.

[0040] 5 , the side 8b (center portion) between the two corners 8a of the second glass plate 12 faces the second sealing region 42, which has a small elastic modulus, of the sealing portion 24. Therefore, when the second glass plate 12 warps toward the second sealing region 42, the warpage of the second glass plate 12 is absorbed by the second sealing region 42. In other words, the second sealing region 42 exhibits a buffering function that absorbs warpage of the second glass sheet 12. This reduces the stress that the second glass sheet 12 receives from the sealing portion 24, thereby reducing the shear stress acting on the second glass sheet 12. As a result, peeling of the sealing material 13 is suppressed, and the airtightness of the insulating space 5 can be properly maintained.

[0041] In the glass unit 100, a Low-E film 12a is laminated over the entire third surface 33 of the second glass plate 12. The Low-E film 12a is composed of a single metal layer or a multilayer structure in which two or more layers selected from a metal layer, a metal oxide layer, a metal nitride layer, and a metal oxynitride layer are laminated. A suitable example of the metal layer is a silver layer. A suitable example of the metal oxide layer is a tin oxide layer, a titanium oxide layer, or a zinc oxide layer. A suitable example of the metal nitride layer is silicon nitride. A suitable example of the metal oxynitride layer is silicon oxynitride. The Low-E film 12a is preferably formed by a vacuum film-forming method such as physical vapor deposition (PVD), and in particular, a sputtering method is preferred because it allows for uniform film formation over a large area.

[0042] The Low-E film 12a is a coating of a low-emissivity special metal film that has high reflectivity in the infrared range, which carries thermal energy. In the glass unit 100, the first surface 31 of the first glass pane 11 faces the outdoor side, and the fourth surface 34 of the second glass pane 12 faces the outdoor side, as described below. By laminating the Low-E film 12a on the third surface 33, indoor heating heat and other sources are reflected by the Low-E film 12a, improving the thermal insulation performance of the double-glazing glass 10. The Low-E film 12a may also be laminated on the second surface 32. In this case, solar heat from the outdoors is reflected by the Low-E film 12a laminated on the second surface 32, improving the heat-shielding performance of the double-glazing glass 10.

[0043] The backup material 23 and the seal portion 24 are components for supporting the double-glazing unit 10 on the frame 20, and are therefore made of resin or rubber with a certain degree of elasticity so as not to damage the double-glazing unit 10.

[0044] [Modification of the first embodiment] As shown in Fig. 6, the double glazing 10 may be formed as reduced-pressure double glazing in which the insulating space 5 is reduced in pressure. The double glazing 10 shown in Fig. 6 has a plurality of spacers 14 between the second surface 32 and the third surface 33, and the plurality of spacers 14 are provided at predetermined intervals on the plate surfaces of the second surface 32 and the third surface 33.

[0045] The spacers 14 are each formed of, for example, a cylindrical columnar body. The columnar body is made of ceramic such as alumina or zirconia. The columnar body may contain a nanoparticle filler such as zirconia.

[0046] Second Embodiment A second embodiment of the glass unit 100 will be described with reference to Fig. 7. The same members as those in the first embodiment are given the same numbers, and their description will be omitted here.

[0047] 7, in this embodiment, the frame 20 has a first frame region 26 facing the corners 8a of the periphery 8 of the first surface 31 and the fourth surface 34, and a second frame region 27 facing the side 8b sandwiched between the two corners 8a of the periphery 8 of the first surface 31 and the fourth surface 34. Here, the elastic modulus of the second frame region 27 is smaller than that of the first frame region 26. The elastic modulus of the first frame region 26 is 10 N / mm 2 More than 250N / mm 2 Preferably, it is less than 70N / mm 2 More than 150N / mm 2 The elastic modulus of the second frame region 27 is more preferably 0.1 N / mm 2 More than 70N / mm 2 Preferably, it is 30N / mm or less. 2 More than 70N / mm 2 It is more preferable that:

[0048] In the second embodiment, the elastic modulus of the second frame region 27 of the frame 20 is smaller than the elastic modulus of the first frame region 26, so that deformation of the side portion 8b of the double-glazing glass 10 is more easily tolerated by the second frame region 27. Furthermore, the frame 20 itself is also more likely to deform due to heat, with the second frame region 27 warping more easily than the first frame region 26, but by reducing the elastic modulus of the second frame region 27, the stress propagating to the double-glazing glass 10 due to deformation of the frame 20 is alleviated. As a result, the stress experienced by the sealing material 13 of the double-glazing glass 10 can be reduced, thereby improving the durability of the sealing material 13.

[0049] Third Embodiment A third embodiment of the glass unit 100 will be described with reference to Fig. 8. The same members as those in the first embodiment are given the same numbers, and their description will be omitted here.

[0050] In this embodiment, as shown in FIG. 8, the frame 20 has a first frame region 26 facing the corner 8a and a second frame region 27 facing the side 8b of the peripheral edge 8 of the first surface 31 and the fourth surface 34, and is configured so that the distance between the side 8b and the second frame region 27 is greater than the distance between the corner 8a and the first frame region 26 in the direction perpendicular to the plate surfaces of the glass plates 11 and 12, so that the second frame region 27 is farther from the side 8b than the first frame region 26.

[0051] The second seal region 42 of the seal portion 24 is disposed across the side 8b and the second frame region 27. Therefore, the thickness of the second seal region 42 of the seal portion 24 is greater than the thickness of the first seal region 41. The second seal region 42, which is thicker than the first seal region 41, faces the side 8b of the double-glazing unit 10, making it easier for the second seal region 42 to elastically deform when the side 8b deforms. This makes it easier for the second seal region 42 of the seal portion 24 to tolerate deformation of the side 8b of the double-glazing unit 10. As a result, the stress applied to the sealing material 13 of the double-glazing unit 10 can be reduced, thereby improving the durability of the sealing material 13.

[0052] [Fourth embodiment] A fourth embodiment of the glass unit 100 will be described with reference to Fig. 9. The same members as those in the first embodiment are given the same numbers, and their description will be omitted here.

[0053] In this embodiment, 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 is configured so that the distance between the side 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 plate surface of the glass plates 11 and 12, so that the second frame region 27 is farther from the side portion 8b than the first frame region 26.

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

[0055] With this configuration, the presence of the gap 50 makes it easier to tolerate deformation of the side portion 8b of the double-glazing glass 10. Furthermore, the frame 20 itself is also deformed by heat, and the second frame region 27 is more likely to warp than the first frame region 26, but the presence of the gap 50 prevents stress caused by deformation of the frame 20 from being transmitted to the double-glazing glass 10. As a result, the stress received by the sealing material 13 of the double-glazing glass 10 can be reduced, thereby improving the durability of the sealing material 13. Note that in the seal portion 24 of this embodiment, the modulus of elasticity of the first seal region 41 and the second seal region 42 may be the same.

[0056] Fifth Embodiment A fifth embodiment of the glass unit 100 will be described with reference to Fig. 10. The same members as those in the first embodiment are given the same numbers, and the description thereof will be omitted here.

[0057] In this embodiment, as shown in FIG. 10 , the seal portion 24 is provided in a first seal region 41 in the region facing the corner 8a, but not in the region facing the side 8b. Therefore, the seal portion 24 faces only the corner 8a of the periphery 8 of the first surface 31 and the fourth surface 34. As a result, the seal portion 24 does not face the side 8b of the first surface 31 and the fourth surface 34, and a gap 51 exists between the side 8b and the frame 20. Therefore, the presence of the gap 51 makes it easier to tolerate deformation of the side 8b of the double-glazed glass 10. Furthermore, the frame 20 itself is more susceptible to warping due to thermal deformation in the second frame region 27 than in the first frame region 26. However, the presence of the gap 51 prevents stress due to deformation of the frame 20 from being transmitted to the double-glazed glass 10. As a result, the stress on the sealing material 13 of the double-glazed glass 10 is reduced, thereby improving the durability of the sealing material 13.

[0058] Sixth Embodiment A sixth embodiment of the glass unit 100 will be described with reference to Fig. 11. The same members as those in the first embodiment are given the same numbers, and their description will be omitted here.

[0059] In this embodiment, as shown in Figure 11, the seal portions 24 are dispersedly arranged in the second seal region 42. When the seal portions 24 are dispersedly arranged in the second seal region 42, the contact area of the seal portions 24 with the side portion 8b of the double-glazing unit 10 is reduced. This makes it easier for the second seal region 42 of the seal portions 24 to tolerate deformation of the side portion 8b of the double-glazing unit 10. As a result, the stress applied to the sealing material 13 of the double-glazing unit 10 can be reduced, thereby improving the durability of the sealing material 13.

[0060] Other Embodiments (1) As shown in Figure 12, the glass unit 100 may be configured such that the seal portion 24 is supported by a glazing channel 29 that is used to attach the seal portion 24 to a sash frame 28. In this case, the glazing channel 29 corresponds to the frame that holds the first glass sheet 11 and the second glass sheet 12 together.

[0061] (2) As shown in FIG. 13, the glass unit 100 may have a shape in which the seal portion 24 has a plurality of ridges 43 on the outer surface that faces the frame 20.

[0062] (3) In the above embodiment, the second sealing region 42 of the sealing portion 24 is formed of a single sealing material, but the second sealing region 42 may be formed of multiple sealing materials having different elastic moduli. The multiple sealing materials having different elastic moduli may be arranged, for example, so that the elastic moduli become smaller toward the center in the longitudinal direction of the second sealing region 42. By arranging multiple seal materials in the second seal region 42 in this way, it is possible to further improve the ability of the second seal region 42 to absorb warpage of the double-glazed glass 10. Alternatively, an additive may be mixed into a single seal material as the seal portion 24, and the amount of additive may be varied between the first seal region 41 and the second seal region 42, so that the elastic modulus 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 body 20 is a fixed frame for the sash, but the frame body 20 is not limited to a fixed frame for the 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 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 are made of heat-resistant glass or Low-E glass, but they may be made of soda glass, tempered glass, or the like. [Industrial Applicability]

[0066] The present invention is widely applicable to double glazing units and double glazing. [Explanation of symbols]

[0067] 4,16,17: End face 5: Insulated space 8: Periphery 8a: Corner 8b: Edge 10: Double glazing 11: First glass plate 12: Second glass plate 12a :Low-E membrane 13: Encapsulating material 14: Spacer 20:Frame body 24: Seal part 24a: Seal part 26: First frame area 27: Second frame area 31: 1st page 32: 2nd side 33: 3rd page 34:Side 4 41: First sealing area 42: Second seal area 50,51 :Void 100: Glass unit (double glazing 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 opposite the second surface and a fourth surface provided on the back side of the third surface; a sealant provided around the entire outer edges of the first glass plate and the second glass plate, sealing an insulating space between the first glass plate and the second glass plate; a spacer disposed between the first glass sheet and the second glass sheet to form the thermal insulation space; and a frame that faces peripheral edges of the first surface and the fourth surface and sandwiches the first glass plate and the second glass plate; a seal portion that seals gaps between the first surface and the fourth surface and the frame body, The sealing portion faces only corners of the periphery of the first surface and the fourth surface.

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 opposite the second surface and a fourth surface provided on the back side of the third surface; a sealant provided around the entire outer edges of the first glass plate and the second glass plate, sealing an insulating space between the first glass plate and the second glass plate; a spacer disposed between the first glass sheet and the second glass sheet to form the thermal insulation space; and a frame that faces peripheral edges of the first surface and the fourth surface and sandwiches the first glass plate and the second glass plate; a seal portion that seals gaps between the first surface and the fourth surface and the frame body, the frame has a first frame region facing corner portions of the periphery of the first surface and the fourth surface, and a second frame region facing side portions of the periphery of the first surface and the fourth surface that are sandwiched between the two corner portions, The frame is configured so 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.

3. 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 opposite the second surface and a fourth surface provided on the back side of the third surface; a sealant provided around the entire outer edges of the first glass plate and the second glass plate, sealing an insulating space between the first glass plate and the second glass plate; a spacer disposed between the first glass sheet and the second glass sheet to form the thermal insulation space; and a frame that faces peripheral edges of the first surface and the fourth surface and sandwiches the first glass plate and the second glass plate; a seal portion that seals gaps between the first surface and the fourth surface and the frame body, the frame has a first frame region facing corner portions of the periphery of the first surface and the fourth surface, and a second frame region facing side portions of the periphery of the first surface and the fourth surface that are sandwiched between the two corner portions, A double-glazing unit in which the modulus of elasticity of the second frame region is smaller than the modulus of elasticity of the first frame region.

4. The double glazing unit according to claim 1 , wherein a plurality of the spacers are provided, the spacers being spaced at predetermined intervals.

5. The double-glazing unit according to claim 4, wherein the insulating space is depressurized.

6. The double-glazing unit according to claim 1 , wherein the spacer is provided on a peripheral edge of the first glass plate and the second glass plate.

7. The double-glazing unit according to claim 6, wherein dry air or an inert gas is sealed in the heat-insulating space.

8. The double glazing unit according to any one of claims 1 to 7, wherein a Low-E film is laminated on the second surface or the third surface.

9. The double glazing unit according to claim 1 , wherein the sealing material is configured so as not to come into contact with the sealing portion.

10. a setting block that abuts against an end surface of the first glass sheet and an end surface of the second glass sheet; The double-glazing unit according to claim 1 , wherein the sealing material is configured to abut against the setting block.

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