Connecting member for holding glass plate and double-glazing unit

Abstract

To provide a connecting member for holding a glass plate and a double-glazing unit which are capable of replacing a glazing channel in a place other than a production factory.SOLUTION: A glass plate holding coupling member 30 is bonded over a first outer surface 21f of a first holding member 21 and a second outer surface 22f of a second holding member 22 in order to maintain a close contact state between the first holding member 21 that holds a first outer edge 11a of a glass plate 11 and the second holding member 22 that holds a second outer edge 11b of the glass plate 11 adjacent to the first outer edge 11a via a corner portion 12. The glass plate holding coupling 30 includes an adhesion portion 32 that resists deformation due to residual stress of the first holding member 21 and the second holding member 22, and an adhesion maintaining portion 34 that is laminated in contact with the adhesion portion 32 and maintains an adhesion state between the first holding member 21 and the second holding member 22.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a glass sheet holding connecting member and an insulating glass unit. [Background technology]

[0002] In sashes and other window frames, when a glass sheet is attached to a frame, a glazing channel is generally fitted around the periphery of the glass sheet. This glazing channel is used to hold the glass sheet in place, to prevent contact between the glass sheet and the frame, and to ensure airtightness and watertightness within the room by filling the gap between the glass and the frame.

[0003] Patent Document 1 discloses a glass panel equipped with a bead in which the end faces of the bead body and the flange, which are butted together at a corner (corner in Patent Document 1), are in close contact with each other without creating a gap. In the bead described in Patent Document 1, flanges made of a soft material are provided on both side edges of the bead body, which has a cross section of a groove shape, and the opposing end faces are butted together to form a corner. For this purpose, the bead body is formed with an end face cut obliquely when viewed from the side, and the flange is formed with an end face cut at a substantially right angle to the longitudinal direction when viewed from above, and the end faces are butted together so as to face each other and are in close contact with each other without creating a gap. At this time, in order to prevent the butted end faces from coming apart, a tongue portion formed at an end of one bead body is joined to an end of the other bead body by a method such as adhesion or welding, and an adhesive tape is applied thereon to reinforce the end faces. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 9-221960 Summary of the Invention [Problem to be solved by the invention]

[0005] Normally, glazing channels and beads (hereinafter also referred to as glazing channels, etc.) are attached to glass sheets at a production factory. However, due to ordering or construction errors, glazing channels, etc. may need to be replaced at the factory where the frame is assembled or at the construction site. In such cases, it is difficult to form corners by butting the end faces of new beads together without leaving any gaps using the method described in Patent Document 1.

[0006] Therefore, there is a need for a glass sheet holding connecting member and an insulating glass unit that allows replacement of the glazing channel at a location other than the production factory. [Means for solving the problem]

[0007] One embodiment of a connecting member for holding a glass plate according to the present invention is a connecting member for holding a glass plate that is bonded across a first outer surface of a first holding member and a second outer surface of a second holding member in order to maintain a tight contact between a first holding member that holds a first outer edge portion of a glass plate and a second holding member that holds a second outer edge portion of the glass plate adjacent to the first outer edge portion via a corner portion, and is provided with an adhesion portion that resists deformation due to residual stress in the first holding member and the second holding member, and an adhesion maintaining portion that is stacked in contact with the adhesion portion and maintains the tight contact state between the first holding member and the second holding member.

[0008] According to this embodiment, the first and second holding members are joined by bonding a glass plate holding connecting member having a contact portion and a contact maintaining portion from the first outer surface to the second outer surface. Therefore, it is possible to maintain a contact state between the first and second holding members while resisting deformation of the first and second holding members due to residual stress. In other words, the simple method of bonding a glass plate holding connecting member from the first outer surface to the second outer surface makes it possible to easily replace the glazing channel in a location other than the production factory.

[0009] In another embodiment of the glass plate holding connecting member according to the present invention, the contact portion is disposed between the first holding member and the second holding member and the contact maintaining portion.

[0010] According to this embodiment, since the contact portion is disposed between the first and second retaining members and the contact maintaining portion, adhesion can be performed more reliably, and even if the first and second retaining members are deformed due to residual stress, the contact portion can resist deformation of the first and second retaining members.

[0011] In another embodiment of the glass plate holding connecting member according to the present invention, the contact portion is made of a soft material having elasticity, and the contact maintaining portion is made of a hard material having an elastic limit smaller than that of the soft material.

[0012] According to this embodiment, even if the first retaining member and the second retaining member are deformed due to residual stress, the adhesion maintaining portion made of a hard material does not follow the deformation, so that the adhesion state between the first retaining member and the second retaining member can be maintained.

[0013] In another embodiment of the glass plate holding connecting member according to the present invention, the areas of the contact maintaining portion facing the first outer surface and the second outer surface are each 1 cm 2 That's all.

[0014] According to this embodiment, the areas of the contact maintaining portion facing the first outer surface and the second outer surface are each 1 cm 2 If this is the case, even if the first holding member and the second holding member are deformed due to residual stress, the first holding member and the second holding member can be maintained in close contact with each other.

[0015] In another embodiment of the glass plate holding connecting member according to the present invention, the areas of the contact portion facing the first outer surface and the second outer surface are each 1 cm 2 That's all.

[0016] According to this embodiment, the areas of the contact portion facing the first outer surface and the second outer surface are each 1 cm2 If this is the case, the contact portion can resist deformation of the first holding member and the second holding member due to residual stress.

[0017] In another embodiment of the glass plate holding connecting member according to the present invention, the thickness of the contact portion in the lamination direction is 30 μm or more and 4 mm or less.

[0018] According to this embodiment, if the thickness of the adhesion portion in the stacking direction is less than 30 μm, the adhesion portion is too thin and may not be able to resist the deformation of the first holding member and the second holding member due to residual stress. Also, if the thickness of the adhesion portion in the stacking direction exceeds 4 mm, the adhesion portion is too thick and may become dominant over the adhesion maintaining portion in maintaining the adhesion between the first holding member and the second holding member. In that case, the adhesion portion excessively resists the deformation of the first holding member and the second holding member due to residual stress, making it difficult to maintain the adhesion state between the first holding member and the second holding member. Therefore, if the thickness of the adhesion portion in the stacking direction is 30 μm or more and 4 mm or less, the adhesion state between the first holding member and the second holding member can be well maintained.

[0019] In another embodiment of the glass plate holding connecting member according to the present invention, the contact portion has a Shore A hardness of 50 degrees to less than 100 degrees, and the contact maintaining portion has a Shore D hardness of 50 degrees or more.

[0020] According to this embodiment, if the Shore A hardness of the contact portion is less than 50 degrees, the contact portion is too soft, so that the contact portion is crushed when the glass plate holding connecting member is bonded to the first holding member and the second holding member, and the elastic force cannot be exerted. As a result, the contact portion may not be able to resist the deformation of the first holding member and the second holding member caused by the residual stress. In addition, if the Shore A hardness of the contact portion is 100 degrees or more, the contact portion may be too hard, so that the contact portion may not be able to resist the deformation of the first holding member and the second holding member caused by the residual stress. Furthermore, if the Shore D hardness of the contact maintaining portion is less than 50 degrees, the contact maintaining portion may be too soft, so that when the first holding member and the second holding member are deformed by the residual stress, the contact state between the first holding member and the second holding member may not be maintained. Therefore, if the Shore A hardness of the contact portion is 50 degrees to less than 100 degrees and the Shore D hardness of the contact maintaining portion is 50 degrees or more, the contact state between the first holding member and the second holding member can be well maintained.

[0021] In another embodiment of the glass plate holding connecting member according to the present invention, the contact portion is rectangular when viewed in a direction perpendicular to the first outer surface or the second outer surface.

[0022] According to this embodiment, the close contact state between the first holding member and the second holding member can be reliably maintained. Moreover, if the close contact portion is rectangular, manufacturing is easy.

[0023] In another embodiment of the glass plate holding connecting member according to the present invention, the contact portion is entirely in contact with the contact maintaining portion.

[0024] According to this embodiment, since the entire contact portion is in contact with the contact maintaining portion, the contact state between the first holding member and the second holding member can be maintained for a long period of time.

[0025] In another embodiment of the glass plate holding connecting member according to the present invention, the difference between the linear expansion coefficient of the first outer surface of the first holding member and the linear expansion coefficient of the second outer surface of the second holding member and the linear expansion coefficient of the contact maintaining portion is 1×10 -5 / °C.

[0026] According to this embodiment, the difference between the linear expansion coefficient of the first outer surface of the first holding member and the linear expansion coefficient of the second outer surface of the second holding member and the linear expansion coefficient of the contact maintaining portion is 1×10 -5 / ° C., the contact maintaining portion is less likely to follow deformation of the first holding member and the second holding member due to residual stress, and the contact state between the first holding member and the second holding member can be maintained.

[0027] In another embodiment of the glass plate holding connecting member according to the present invention, the first outer surface of the first holding member, the second outer surface of the second holding member, and the contact maintaining portion are made of the same material.

[0028] According to this embodiment, the first outer surface of the first retaining member, the second outer surface of the second retaining member, and the contact maintaining portion are made of the same material, so that the contact state between the first retaining member and the second retaining member can be maintained more reliably.

[0029] One embodiment of the double-glazing unit of the present invention comprises a connecting member for holding a glass plate described above, a pair of the glass plates having a hollow layer whose outer edges are sealed, the first holding member for holding the pair of the glass plates, and the second holding member for holding the pair of the glass plates.

[0030] According to this embodiment, by bonding a glass plate holding connecting member having a contact portion and a contact maintaining portion from the first outer surface of the first holding member to the second outer surface of the second holding member, it is possible to join and attach the first holding member and the second holding member to a pair of glass plates having a hollow layer whose outer edges are sealed so that the contact state between the first holding member and the second holding member can be maintained for a long period of time. Therefore, even if the first holding member and the second holding member are attached to the pair of glass plates at a location other than the production factory, it is possible to provide a double glazing unit that does not impair the aesthetic appearance over a long period of time and that does not decrease in airtightness and watertightness.

[0031] In another embodiment of the insulating glass unit according to the present invention, each of the pair of glass plates is rectangular, and the glass plate holding connecting members are arranged at each of the four corners of the glass plates.

[0032] According to this embodiment, the first retaining member and the second retaining member can be maintained in close contact for a long period of time at any corner of the rectangular glass plate, so that the double-glazing unit maintains its aesthetic appearance for a long period of time without compromising its airtightness and watertightness.

[0033] In another embodiment of the insulating glass unit according to the present invention, the width of the contact maintaining portion of the glass sheet holding connecting member along the thickness direction of the glass sheet is equal to or greater than the width of the hollow layer.

[0034] According to this embodiment, the width of the contact maintaining portion of the connecting member for holding a glass plate along the thickness direction of the glass plate is equal to or greater than the width of the hollow layer, so that the contact state between the first holding member and the second holding member can be maintained for a long period of time, airtightness is guaranteed for the hollow layer, and a pair of glass plates can be securely held.

[0035] In another embodiment of the insulating glass unit according to the present invention, the width of the contact maintaining portion of the glass plate holding connecting member along the thickness direction of the glass plate is equal to or greater than the total width of the plurality of glass plates.

[0036] According to this embodiment, the width of the contact maintaining portion of the connecting member for holding glass plates along the thickness direction of the glass plates is equal to or greater than the total width of the multiple glass plates, so that the contact state between the first holding member and the second holding member can be maintained for a long period of time, and airtightness is reliably guaranteed for the hollow layer, thereby more reliably holding the pair of glass plates.

[0037] In another embodiment of the double-glazing unit of the present invention, the adhesive applied to the glass plate holding connecting member is present at least in the area facing the boundary between the first holding member and the second holding member.

[0038] According to this embodiment, since the adhesive is present at least in the region facing the boundary between the first holding member and the second holding member, the close contact state between the first holding member and the second holding member can be maintained for a long period of time. [Brief description of the drawings]

[0039] [Figure 1] FIG. 2 is an exploded perspective view showing the insulating glass unit according to the embodiment. [Diagram 2] FIG. 2 is a front view showing a state in which the frame has been separated from the insulating glass unit. [Diagram 3] 1 is a front view showing a state in which glazing channels and glass plate holding connecting members are attached to the four sides of insulating glass. FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Diagram 5] FIG. 2 is a perspective view illustrating a glass plate holding connecting member according to the embodiment. [Figure 6] FIG. 11 is a perspective view illustrating a glass plate holding connecting member according to another embodiment. [Figure 7] FIG. 11 is a perspective view illustrating a glass plate holding connecting member according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0040] Hereinafter, the embodiments of the glass plate holding connecting member and the double glazing unit according to the present invention will be described in detail with reference to the drawings. Note that the embodiments described below are merely examples for explaining the present invention, and the present invention is not limited to these embodiments. Therefore, the present invention can be embodied in various forms without departing from the gist of the present invention.

[0041] An embodiment of a glass sheet holding connecting member 30 (hereinafter also referred to as connecting member 30) and an insulating glass unit 100 according to the present invention will be described with reference to Figures 1 to 5. The insulating glass unit 100 comprises insulating glass 10, a glazing channel 20, a glass sheet holding connecting member 30, and a frame body 40.

[0042] As shown in FIG. 1, the insulating glass 10 includes two rectangular glass sheets 11 and a sealant 13 disposed between the two glass sheets 11. The sealant 13 is disposed between the two glass sheets 11 around the entire periphery of the outer edge, holds the two glass sheets 11, and prevents dry air or inert gas or the like sealed in the hollow layer 5 between the glass sheets 11 from leaking out, or maintains the vacuum state of the hollow layer 5. Each of the two glass sheets 11 has a pair of first outer edge portions 11a (an example of an outer edge) that are two parallel sides, and a pair of second outer edge portions 11b (an example of an outer edge) that are two parallel sides perpendicular to the first outer edge portion 11a. The first outer edge portion 11a and the second outer edge portion 11b are adjacent to each other via a corner portion 12. Hereinafter, when describing the insulating glass 10, the first outer edge portions 11a of the two glass sheets 11 constituting the insulating glass 10 may be collectively referred to as the first outer edge portions 11a. Also, the second outer edge portions 11b of the two glass sheets 11 constituting the insulating glass 10 may be collectively referred to as the second outer edge portions 11b.

[0043] The glazing channel 20 is attached around the entire circumference of the four outer edges of the rectangular insulating glass 10, and is configured in a frame shape by joining the ends of four linear parts attached to each of the four outer edges (see FIG. 3). Specifically, the glazing channel 20 has a pair of opposing first channels 21 (an example of a first holding member) that holds a pair of first outer edge portions 11a of the insulating glass 10, and a pair of second channels 22 (an example of a second holding member) that holds a pair of second outer edge portions 11b of the insulating glass 10, and is configured in a frame shape by joining the first end portions 21a of the first channels 21 and the second end portions 22a of the second channels 22 that are adjacent to each other in a tight contact state. The first channels 21 and the second channels 22 are attached to the insulating glass 10 by sandwiching the plate surfaces near the outer edges of the two glass sheets 11 (see FIG. 4).

[0044] As shown in FIG. 1 and FIG. 2, the first channel 21 has a first channel body 21b and a pair of first seal parts 21c. The second channel 22 has a second channel body 22b and a pair of second seal parts 22c. The first channel body 21b and the second channel body 22b are made of a hard material such as polyvinyl chloride or polypropylene. The first channel body 21b has a first bottom 21d and a pair of first side parts 21e standing from both ends of the first bottom 21d, and has a U-shaped cross section perpendicular to the extension direction (see also FIG. 4). The second channel body 22b has a second bottom 22d and a pair of second side parts 22e standing from both ends of the second bottom 22d, and has a U-shaped cross section perpendicular to the extension direction (see also FIG. 4).

[0045] Each of the pair of first seal portions 21c is attached to the tip (the end farther from the first bottom portion 21d) of each of the pair of first side portions 21e by integral molding. Each of the pair of second seal portions 22c is attached to the tip (the end farther from the second bottom portion 22d) of each of the pair of second side portions 22e by integral molding. The first seal portion 21c and the second seal portion 22c are made of a soft material having elasticity, such as rubber or elastomer. The pair of first seal portions 21c are in close contact with the outer plate surfaces of the two glass sheets 11 of the insulating glass 10 near the first outer edge portion 11a, and sandwich the insulating glass 10. The pair of second seal portions 22c are in close contact with the outer plate surfaces of the two glass sheets 11 of the insulating glass 10 near the second outer edge portion 11b, and sandwich the insulating glass 10 (see FIG. 4).

[0046] The first end 21a on both sides of the first channel 21 is inclined at 45 degrees relative to the first bottom 21d, and the second end 22a on both sides of the second channel 22 is inclined at 45 degrees relative to the second bottom 22d (see FIG. 2). Specifically, the first channel body 21b of the first end 21a is inclined at an angle close to 45 degrees but not exceeding 45 degrees. The first seal portion 21c of the first end 21a is inclined at an angle exceeding 45 degrees (e.g., 50 degrees). The second channel body 22b of the second end 22a is inclined at an angle close to 45 degrees but not exceeding 45 degrees. The second seal portion 22c of the second end 22a is inclined at an angle exceeding 45 degrees (e.g., 50 degrees).

[0047] This is because the first seal portion 21c and the second seal portion 22c are made of a soft material, and so when the first channel 21 and the second channel 22 are attached to the insulating glass 10, the first seal portion 21c at the first end portion 21a and the second seal portion 22c at the second end portion 22a interfere with each other and elastically deform to form tight contact. This allows the glazing channel 20 to join the first channel 21 and the second channel 22 in tight contact, ensuring airtightness and watertightness of the joint.

[0048] The connecting member 30 is used to join the first channel 21 and the second channel 22 to maintain the adhesion between the first end 21a and the second end 22a. The connecting member 30 extends from the first outer surface 21f of the first channel 21 through the area where the first end 21a and the second end 22a are in close contact with each other to the second outer surface 22f of the second channel 22. That is, the connecting member 30 has an L-shape when viewed along a direction perpendicular to the plate surface of the glass plate 11 (see Figs. 2 and 3). The first outer surface 21f is a surface of the first bottom 21d of the first channel 21 that does not face the insulating glass 10, and the second outer surface 22f is a surface of the second bottom 22d of the second channel 22 that does not face the insulating glass 10. Four connecting members 30 are used in the insulating glass 10 of this embodiment. Specifically, the connecting members 30 are disposed at the four corners of the rectangular glass plate 11 where the first channel 21 and the second channel 22 attached to the insulating glass 10 are in close contact with each other, and are fixed to the first channel 21 and the second channel 22 (see FIG. 3) with an adhesive 39 (see FIG. 5). The details of the connecting members 30 will be described later.

[0049] As shown in Fig. 1 and Fig. 2, the glazing channel 20 in which the first channel 21 and the second channel 22 are joined by the connecting member 30 is fitted into and fixed in a frame body 40 in a state where it is attached to the insulating glass 10. The frame body 40 has a rectangular frame shape made of a metal such as aluminum or an aluminum-resin composite material, and has a U-shaped recess 42 in a cross section perpendicular to the sides of the rectangle. The glazing channel 20 is fitted into the recess 42 of the frame body 40 together with the connecting member 30. When the glazing channel 20 is fitted into the frame body 40, a part of the first seal portion 21c and the second seal portion 22c of the glazing channel 20 are exposed from the frame body 40.

[0050] As shown in FIG. 5, the connecting member 30 includes a plate-shaped contact portion 32 and a plate-shaped contact maintaining portion 34. In the connecting member 30, the contact portion 32 and the contact maintaining portion 34 are both L-shaped, bent 90 degrees at a connecting corner 35 in the center of the plate surface in the extending direction, and are laminated in a state where the corners of the L-shape overlap and contact each other so that the contact maintaining portion 34 is located on the outside of the L shape and the contact portion 32 is located on the inside of the L shape. The surface area of ​​the plate surface of the contact portion 32 is smaller than the surface area of ​​the plate surface of the contact maintaining portion 34. The contact portion 32 and the contact maintaining portion 34 are bonded together by being formed as an integrally molded product, but may be bonded together by adhesive or the like. The surface area of ​​the plate surface of the contact portion 32 and the surface area of ​​the plate surface of the contact maintaining portion 34 may be the same.

[0051] In the connecting member 30, the contact portion 32 is in close contact with the first outer surface 21f of the first channel 21 and the second outer surface 22f of the second channel 22 by the adhesive 39 (see Figs. 2 and 4). That is, the contact portion 32 is disposed between the first channel 21 and the second channel 22 and the contact maintaining portion 34. The adhesive 39 is applied to at least the connecting corner portion 35 of the contact portion 32. That is, the adhesive 39 is applied to an area facing the boundary between the first end portion 21a and the second end portion 22a, which is the boundary between the first channel 21 and the second channel 22. In this embodiment, the adhesive 39 is applied to the connecting corner portion 35 of the contact portion 32, the area facing the first outer surface 21f, and the area facing the second outer surface 22f. As a result, the entire contact portion 32 is in close contact with the first outer surface 21f and the second outer surface 22f.

[0052] The contact portion 32 of the connecting member 30 is made of a soft material having elasticity, such as resin, rubber, or elastomer, for example soft polyvinyl chloride. The surfaces of the contact portion 32 facing (in contact with) the first outer surface 21f and the second outer surface 22f each have an area of ​​1 cm. 2 It is rectangular and has an area of ​​3cm or more. 2 More than 5cm is preferable. 2 The thickness of the adhesive portion 32 is 30 μm or more and 4 mm or less, preferably 50 μm or more and 3 mm or less, and more preferably 100 μm or more and 2 mm or less.

[0053] The Shore A hardness of the adhesive portion 32 is 50 degrees to less than 100 degrees, preferably 60 degrees to less than 90 degrees, and more preferably 70 degrees to less than 80 degrees. The linear expansion coefficient of the adhesive portion 32 is 5×10 -5 / ℃ to 10×10 -5 / ℃.

[0054] The contact maintaining portion 34 of the connecting member 30 is made of a hard material such as hard polyvinyl chloride or polypropylene. The elastic limit of the hard material used for the contact maintaining portion 34 is smaller than the elastic limit of the soft material used for the contact portion 32. The surfaces of the contact maintaining portion 34 facing the first outer surface 21f and the second outer surface 22f each have an area of ​​1 cm. 2 It is rectangular and has an area of ​​3cm or more. 2 More than 5cm is preferable. 2 The thickness of the contact maintaining portion 34 is 0.3 mm or more and 4 mm or less, preferably 0.5 mm or more and 3 mm or less, and more preferably 0.8 mm or more and 2 mm or less.

[0055] The Shore D hardness of the adhesion maintaining portion 34 is 50 degrees or more, preferably 60 degrees or more, and more preferably 70 degrees or more. The linear expansion coefficient of the adhesion maintaining portion 34 is 10×10 -5 The difference between the linear expansion coefficient of the adhesion maintaining portion 34 and the linear expansion coefficient of the first channel body 21b and the second channel body 22b of the glazing channel 20 is less than 1×10 -5 / ° C. The material of the adhesion maintaining portion 34 may be the same as that of the first channel body 21 b and the second channel body 22 b of the glazing channel 20.

[0056] 4, the width d1 of the contact maintaining portion 34 of the connecting member 30 along the thickness direction of the glass plate 11 is equal to or greater than the width d2 of the hollow layer 5. It is preferable that the width d1 be equal to or greater than the total width d3 of the two glass plates 11.

[0057] Next, a method of attaching the glazing channel 20 to the insulating glass 10 at a location other than the production factory will be described. First, the first channel 21 is fitted into a pair of first outer edge portions 11a of the rectangular insulating glass 10, and the second channel 22 is fitted into a pair of second outer edge portions 11b. The first channel 21 and the second channel 22 have a first seal portion 21c and a second seal portion 22c, respectively, so that the insulating glass 10 can be sandwiched by the elastic force of the first seal portion 21c and the second seal portion 22c. As a result, the first end portion 21a of the first channel 21 and the second end portion 22a of the second channel 22 are in contact with each other at each of the four corner portions 12 of the insulating glass 10.

[0058] Next, adhesive 39 is applied to the connecting corner 35 of the contact portion 32 of the connecting member 30, the area facing the first outer surface 21f, and the area facing the second outer surface 22f. The adhesive 39 is, for example, a cyanoacrylate-based instant adhesive. Then, in a state in which the first end 21a and the second end 22a are pressed against each other and brought into close contact, the connecting member 30 is placed on the glazing channel 20 with the connecting corner 35 aligned with the boundary between the first channel 21 and the second channel 22, and the connecting member 30 is pressed from the first outer surface 21f of the first channel 21 to the second outer surface 22f of the second channel 22 to bring them into close contact. Since the adhesive 39 can be bonded instantly, the first channel 21 and the second channel 22 are bonded via the adhesive 39 by pressing the connecting member 30 against the glazing channel 20. This is repeated four times to bond the adjacent first channel 21 and second channel 22.

[0059] The glazing channel 20 having the first channel 21 and the second channel 22 shrinks (deforms) over time due to the influence of residual stress generated during production. As a result, a force acts on the first channel 21 and the second channel 22 in a direction in which the boundary between the first end 21a and the second end 22a separates. When the glazing channel 20 is attached at a production factory, the adhesion between the first channel 21 and the second channel 22 is strong, so the boundary between the first end 21a and the second end 22a is unlikely to separate. However, when the glazing channel 20 is attached to the insulating glass 10 at a place other than the production factory, and the adhesion between the first channel 21 and the second channel 22 is insufficient, the boundary between the first end 21a and the second end 22a may separate. If there is a separation at the boundary between the first end 21a and the second end 22a, the aesthetic appearance of the insulating glass unit 100 will be marred and the airtightness and watertightness will decrease, making it impossible for the glazing channel 20 to function.

[0060] However, in this embodiment, the first end 21a and the second end 22a are joined by bonding the connecting member 30 having the contact portion 32 and the contact maintaining portion 34 from the first outer surface 21f of the first channel 21 to the second outer surface 22f of the second channel 22. Therefore, even if the first channel 21 and the second channel 22 shrink due to residual stress, the contact portion 32 resists the shrinkage of the first channel 21 and the second channel 22. On the other hand, the contact maintaining portion 34, which is laminated in contact with the contact portion 32 and is made of an efficient material having a smaller elastic limit than the contact portion 32, does not follow the shrinkage, so that the separation of the boundary between the first end 21a and the second end 22a can be suppressed. Therefore, even if the glazing channel 20 is attached to the double glazing 10 at a place other than the production factory, the contact state between the first end 21a of the first channel 21 and the second end 22a of the second channel 22 can be maintained. In other words, by using a simple method such as bonding the connecting member 30 from the first outer surface 21f to the second outer surface 22f, it becomes possible to easily replace the glazing channel 20 (first channel 21, second channel 22) at a location other than the production factory.

[0061] Other embodiments Next, a glass plate holding connecting member 30 according to another embodiment of the present invention will be described. In this embodiment, the shape of the glass plate holding connecting member 30 is different from that of the above embodiment. Other than that, it has the same configuration as the above embodiment. Therefore, in the description of this embodiment, the same reference numerals are used for the parts having the same configuration as the above embodiment, and detailed description of the same configuration is omitted.

[0062] (1) In the above embodiment, the surfaces of the contact portion 32 and the contact maintaining portion 34 facing the first outer surface 21f and the second outer surface 22f are both rectangular, but may be trapezoidal as shown in Fig. 6. In this case, as shown in Fig. 6, the width of the connecting corner 35 may be narrower than the width of both ends, or conversely, the width of the connecting corner 35 may be wider than the width of both ends.

[0063] (2) The surfaces of the contact portion 32 and the contact maintaining portion 34 facing the first outer surface 21f and the second outer surface 22f may be triangular as shown in Fig. 7. In this case, both ends may be curved to have an R-shape.

[0064] (3) In the rectangular contact portion 32 and contact maintaining portion 34 of the above embodiment, each corner of both ends may be R-chamfered or C-chamfered. In addition, both ends may be semicircular. The shape of the glass plate holding connecting member 30 may be any shape as long as the contact state between the first end 21a of the first channel 21 and the second end 22a of the second channel 22 can be maintained. [Industrial Applicability]

[0065] INDUSTRIAL APPLICABILITY The present invention can be used in a glass sheet holding connecting member and an insulating glass unit. [Explanation of symbols]

[0066] 5:Hollow layer 11: Glass plate 11a: First outer edge 11b: Second outer edge 12: Corner 21: First channel (first holding member) 21f: 1st outer surface 22: Second channel (second holding member) 22f: 2nd outer surface 30: Glass plate holding connecting member 32: Contact area 34: Adhesion maintenance part 39: Adhesive d1:Width d2: Width d3: Total width

Claims

1. A glass plate holding connecting member bonded across a first outer surface of a first holding member that holds a first outer edge portion of a glass plate and a second outer surface of a second holding member that holds a second outer edge portion of the glass plate adjacent to the first outer edge portion via a corner portion, A connecting member for holding a glass plate, comprising: an adhesion portion that resists deformation due to residual stress of the first holding member and the second holding member; and an adhesion maintaining portion that is stacked in contact with the adhesion portion and maintains a close contact state between the first holding member and the second holding member.

2. The glass plate holding connecting member according to claim 1 , wherein the contact portion is disposed between the first holding member and the contact maintaining portion and between the second holding member and the contact maintaining portion.

3. The contact portion is made of an elastic soft material, 3. The glass plate holding connecting member according to claim 2, wherein the contact maintaining portion is made of a hard material having an elastic limit smaller than that of the soft material.

4. The areas of the contact maintaining portion facing the first outer surface and the second outer surface are each 1 cm ２ The glass plate holding connecting member according to claim 3 .

5. The areas of the contact portion facing the first outer surface and the second outer surface are each 1 cm ２ The glass plate holding connecting member according to claim 3 .

6. 4. A connecting member for holding glass plates according to claim 3, wherein the thickness of the contact portion in the lamination direction is 30 [mu]m or more and 4 mm or less.

7. 4. The glass plate holding connecting member according to claim 3, wherein the contact portion has a Shore A hardness of 50 degrees to less than 100 degrees, and the contact maintaining portion has a Shore D hardness of 50 degrees or more.

8. The glass plate holding connecting member according to claim 3 , wherein the contact portion has a rectangular shape when viewed in a direction perpendicular to the first outer surface or the second outer surface.

9. 2. The glass plate holding connecting member according to claim 1, wherein the contact portion is entirely in contact with the contact maintaining portion.

10. The difference between the linear expansion coefficient of the first outer surface of the first holding member and the linear expansion coefficient of the second outer surface of the second holding member and the linear expansion coefficient of the contact maintaining portion is 1×10 －５ 2. The glass plate holding connecting member according to claim 1, wherein the temperature is less than 100° C. / ° C.

11. 11. The glass plate holding connecting member according to claim 10, wherein the first outer surface of the first holding member, the second outer surface of the second holding member, and the contact maintaining portion are made of the same material.

12. A glass plate holding connecting member according to any one of claims 1 to 11, A pair of the glass plates having a hollow layer whose outer edges are sealed; The first holding member holds the pair of glass plates; and the second holding member holding the pair of glass plates.

13. The pair of glass plates are both rectangular in shape, The insulating glass unit according to claim 12 , wherein the glass sheet holding connecting members are arranged at each of the four corners of the glass sheet.

14. The insulating glass unit according to claim 13 , wherein the width of the contact maintaining portion of the glass sheet holding connecting member in the thickness direction of the glass sheet is equal to or greater than the width of the hollow layer.

15. The insulating glass unit according to claim 13 , wherein the width of the contact maintaining portion of the glass plate holding connecting member in the thickness direction of the glass plate is equal to or greater than the total width of the plurality of glass plates.

16. The insulating glass unit according to claim 12 , wherein the adhesive applied to the glass plate holding connecting member is present at least in an area facing a boundary between the first holding member and the second holding member.

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