JP4466294B2 - Double glazing - Google Patents

Description

  The present invention relates to a multi-layer glass, and more particularly to a multi-layer glass formed by bonding two glass plates separated by a spacer with a sealing material.

  The double-glazed glass disclosed in Patent Document 1 and the like separates two glass plates through spacers arranged to form an air layer between them, and the spacers and the respective glass plates. A primary sealing material made of butyl-based sealing material or the like, and an elastic sealing material or the like formed in a space defined by the peripheral edges of the spaced glass plates and the spacer. It is constituted by placing the next sealing material and sealing the space. In addition, a hygroscopic agent is accommodated in the spacer, and at least one vent hole is formed in the spacer in order to bring the hygroscopic agent into contact with the air layer.

Conventional spacers include one formed by bending a plate material into a hollow shape and welding the butted ends to each other (Patent Document 2) and one formed into a hollow shape using an extruded material. Since the spacer is thus formed in a hollow shape, the strength of the spacer itself is high. The primary seal placed between the glass plate and the spacer has a structure to absorb by expanding and contracting.
Japanese Utility Model Publication No. 7-19575 JP-A-7-300352

  However, the conventional multi-layer glass disclosed in Patent Document 1 and the like has a structure in which the force (load) when the glass plate is displaced is always received by the primary seal. Therefore, the seal of the primary seal is received by repeatedly receiving the force. There was a problem that the property deteriorated early. When the sealing performance deteriorates as described above, a gap is generated between the glass plate and the spacer. Therefore, there is a problem that wet outside air enters into the air layer of the double-glazed glass and the durability of the double-glazed glass is lowered. It was.

  This invention is made | formed in view of such a situation, and it aims at providing the double-glazed glass excellent in durability by hold | maintaining the sealing performance of a sealing material for a long period of time.

In the present invention, in order to achieve the above object, the two glass plates are separated via a spacer containing a hygroscopic agent, and the spacer and the two glass plates are bonded by a sealing material. In a multi-layer glass in which a space defined by a peripheral portion of a sheet of glass plate and the spacer is sealed with a sealing material, the glass plate is rectangular, and the spacer is formed by a straight rod-shaped molded body. It is a spacer that is bent 90 degrees at the corners of the glass plate and is disposed along the four peripheral edges of the glass plate, and the spacer deforms the displacement in the out-of-plane direction of the two glass plates. A deformation absorbing portion is formed to absorb , and the spacer has one wall surface bonded to one of the two glass plates by the sealing material and the other of the two glass plates. Said glass plate The deformation absorbing portion includes an intermediate plate extending in a direction orthogonal to the surface of the glass plate from the one wall surface, and the other wall surface. A pair of plates extending in a direction perpendicular to the surface of the glass plate, and the intermediate plate is configured to be sandwiched between the pair of plates with a predetermined gap. A multilayer glass is provided.

Thus, the onset Ming can the two air layer volume expansion and contraction of the glass plates deformation absorbing portion of the spacer is absorbed by deforming. Thereby, since the sealing material does not receive the force by expansion and contraction of the air layer volume, the sealing property is maintained for a long period of time, and a double-glazed glass having excellent durability is obtained.

The present invention is the deformation absorbing portion before Symbol spacers, when the two glass plates is displaced in a direction approaching each other, a first regulating member for regulating the amount of displacement, the two glass plates to each other A second restricting member that restricts the amount of displacement when displaced in the direction of leaving is formed.

  When the displacement of the two glass plates due to the expansion and contraction of the air layer volume is all absorbed by the deformation absorbing portion of the spacer, the sealing property for the sealing material (hereinafter referred to as the primary sealing material) for bonding the glass plate and the spacer. It is preferable from the viewpoint of preventing deterioration. However, for example, if the displacement of the two glass plates in the direction in which the air layer volume shrinks becomes excessive, the spacer that deforms so as to shrink following the glass plate undergoes plastic deformation, and the displacement of the glass plate is based on There is a risk that the deformed spacer shape may not be restored to its original state even after returning. Conversely, if the displacement of the two glass plates in the direction in which the air layer volume expands becomes excessive, the deformation absorbing portion of the spacer may open, and the hygroscopic agent stored in the spacer may leak.

Therefore, in order to eliminate such a concern, as in the present invention , the first and second restricting members that restrict the deformation amount of the deformation absorbing portion when the two glass plates are displaced in the expansion / contraction direction are deformed. It is formed in the absorption part. As a result, it is possible to eliminate the possibility that the spacer will be plastically deformed and not restored to its original shape, and that the hygroscopic agent stored in the spacer may leak.

The present invention, before Symbol spacer, an air layer formed between the two glass plates, the vent hole for contacting the moisture absorbent is formed, the vent hole, the deformation absorbers It is formed by the predetermined gap between the intermediate plate and the pair of plates, and is formed in a maze shape.

According to the present invention, since the vent hole formed in the spacer is formed in a maze shape, it is possible to prevent the hygroscopic material stored in the spacer from leaking from the vent hole. The maze shape is a shape having at least a barb, and examples thereof include a Z-shape and a ninety-nine fold shape.

Spacers disposed in insulating glass window formed in a rectangular shape, a straight rod which is formed into a rod-like in distribution設前, the straight rod at the corners of the glass plate It is arranged by being assembled along the four peripheral edges of the glass plate while being bent by 90 degrees. Therefore, in the bent portion of the spacer, in order to prevent the moisture absorbing material from leaking, it is important that the bent portion rises and the vent hole is not greatly opened.

Therefore, the spacers of the present invention, even when bent spacer 90 degrees, the bent portion does not rise curling, therefore, remains intact without changing the size of the vent holes. Therefore, it is possible to prevent the hygroscopic material from leaking from the vent hole.

  The spacer of the present invention is preferably extruded from an extruder because the thickness can be adjusted appropriately. After extrusion, the male and female shapes are fitted, for example, by roll forming so as to have a shape at the time of use. A flexible structure is preferable from the viewpoint of assembly work.

  As described above, according to the multilayer glass according to the present invention, the expansion and contraction of the air layer volume between the two glass plates are absorbed by the deformation absorbing portion of the spacer being deformed. Can be maintained for a long period of time, and a multi-layer glass excellent in durability can be provided.

  Hereinafter, preferred embodiments of the multilayer glass according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a reference diagram of a multi-layer glass 10 for explaining the multi-layer glass of the embodiment, and shows a cross-sectional view of the main part. The multi-layer glass 10 includes two glass plates 12, 12 are spaced by a spacer 16 disposed to form an air layer 14 therebetween, and are made of a butyl sealant or the like between the spacer 16 and the respective glass plates 12 and 12. The primary sealing material 18, 18 is placed, and a secondary portion made of an elastic sealing material or the like is formed in a space defined by the peripheral edges 12 A, 12 A of the spaced glass plates 12, 12 and the spacer 16. It is configured by placing the sealing material 20. The spacer 16 is a substantially cylindrical rod-like body extruded by an extrusion molding machine. The moisture absorbent 22 is housed in the spacer 16 and a slit for contacting the moisture absorbent 22 and the air layer 14. A vent 24 is formed.

  A deformation absorbing portion 26 is formed on the upper surface portion of the spacer 16 in FIG. The deformation absorbing portion 26 deforms following the displacement in the out-of-plane direction of the two glass plates 12 and 12 due to the volume expansion and contraction of the air layer 14 and absorbs the displacement in the out-of-plane direction of the glass plates 12 and 12. The upper plate 28 extending in the horizontal direction (perpendicular to the surface of the glass plate 12) from the right wall surface 16A forming the spacer 16 toward the left wall surface 16B, and the right wall surface 16A from the left wall surface 16B. And a lower plate 30 extending in a horizontal direction (perpendicular to the surface of the glass plate 12), and the lower plate 30 is disposed with a predetermined gap with respect to the upper plate 28. ing.

  Therefore, according to the multi-layer glass 10 configured in this way, when the air layer 14 contracts as shown in FIG. 2, the right wall surface 16A and the left wall surface 16B of the spacer 16 exert forces in the direction in which the glass plates 12 and 12 approach each other. Receive from. At this time, since the upper plate 28 and the lower plate 30 of the deformation absorbing portion 26 are not connected and have a flexible structure, the right wall surface 16A and the left wall surface 16B are allowed to be elastically deformed in a direction approaching each other. Thereby, since the primary sealing materials 18 and 18 do not receive the force by the volume contraction of the air layer 14, sealing performance is maintained for a long time. Therefore, it becomes the multilayer glass 10 excellent in durability.

  Further, when the air layer 14 is expanded as shown in FIG. 3, the right wall surface 16 </ b> A and the left wall surface 16 </ b> B of the spacer 16 receive forces in directions away from each other from the glass plates 12 and 12. Also at this time, since the deformation absorbing portion 26 has a flexible structure, the right wall surface 16A and the left wall surface 16B allow elastic deformation in a direction away from each other. Thereby, since the primary sealing materials 18 and 18 do not receive the force by the volume expansion of the air layer 14, sealing performance is maintained for a long time. Therefore, it becomes the multilayer glass 10 excellent in durability.

By the way, the deformation absorbing portion 26 of the spacer 16 is composed of a stopper 32 and a stopper 34 that regulate the displacement amount when the two glass plates 12 and 12 are displaced in a direction approaching each other as shown in FIG. is formed first regulating member, also restricts the amount of displacement when the two glass plates 12, 12 as shown in FIG. 3 is displaced away from each other, and a stopper 32 and the stopper 3 6 A second restricting member is formed.

  The stopper 32 is formed along the lower edge portion of the end portion of the upper plate 28 and the cross section is formed in a substantially wedge shape, and the stopper 34 is an inner surface of the left wall surface 16B. The stopper 36 is formed along the upper edge of the end portion of the lower plate 30 and has a substantially wedge-shaped cross section. Therefore, when the stopper 32 comes into contact with the stopper 34, the deformation amount of the deformation absorbing portion 26 when the two glass plates 12 and 12 are displaced in a direction approaching each other is restricted, and the stopper 32 and the stopper 36 come into contact with each other. Thus, the deformation amount of the deformation absorbing portion 26 when the two glass plates 12 and 12 are displaced in the direction away from each other is regulated.

  The reason why the stoppers 32, 34, 36 are formed will be described. When the displacement of the two glass plates 12, 12 due to the volume expansion / contraction of the air layer 14 is all absorbed by the deformation absorbing portion 26 of the spacer 16, the glass plate 12 , 12 and the spacer 16 are preferable for the primary sealing materials 18 and 18 from the viewpoint of preventing deterioration of the sealing performance. However, for example, when the displacement of the two glass plates 12 and 12 in the direction in which the volume of the air layer 14 contracts is excessive as shown in FIG. 2, the spacer 16 deforms so as to contract following the glass plates 12 and 12. However, the shape of the deformed spacer 16 may not be restored to its original shape even after the plastic plate is deformed and the displacement of the glass plates 12 and 12 is restored. Conversely, when the displacement of the two glass plates 12 and 12 in the direction in which the air layer volume expands becomes excessive, the deformation absorbing portion 26 of the spacer 16 opens, and the hygroscopic agent stored in the spacer 16 leaks. There is a fear.

  Therefore, in order to eliminate such a fear, stoppers 32, 34, and 36 that restrict the deformation amount of the deformation absorbing portion when the two glass plates 12, 12 are displaced in the expansion / contraction direction are provided on the deformation absorbing portion 26. Forming. As a result, it is possible to eliminate the fear that the spacer 16 will be plastically deformed and not restored to its original shape, and that the hygroscopic agent stored in the spacer 16 may leak.

A part of the vent hole 24 of the scan pacer 16 is sandwiched by the stopper 32 and 36 is formed into a substantially Z-shape, this part has a labyrinth form by substantially barb shape of the stopper 32 and 36. Thereby, it is possible to prevent the hygroscopic material 22 accommodated in the spacer 16 from leaking from the vent hole 24. In addition to the air holes 24, air holes may be separately provided in the upper plate 28 and / or the lower plate 30.

Figure 4 is a sectional view showing a spacer 11 6 in the first embodiment of the present invention. Deformable housing portion 126 of the spacer 116 has an intermediate plate 118 which extends from the right wall 116A, an upper plate 120 and lower plate 122 extending from the left wall surface 116B, the upper intermediate plate 118 Plate 120 and the lower plate 122 are sandwiched with a predetermined gap. The predetermined gap forms a vent hole 124. A stopper 128 is formed at the end of the intermediate plate 118, and stoppers 130 and 132 are also formed at the ends of the upper plate 120 and the lower plate 122. The amount of deformation of the deformation absorbing portion 126 is regulated by the stopper 128 being in contact with the stoppers 130 and 132 and the stoppers 130 and 132 being in contact with the inner surface of the right wall surface 116A.

  By the way, the spacer disposed on the double-glazed glass for windows formed in a rectangular shape is a straight rod body formed into a single rod shape before the placement, and this straight rod body is a corner of the glass plate. It is arranged by being assembled along the four peripheral edges of the glass plate while being bent 90 degrees at the portion. Therefore, in the bent portion of the spacer, in order to prevent the moisture absorbing material from leaking, it is important that the bent portion rises and the vent hole is not greatly opened.

  When the spacer 150 having the cross-sectional shape shown in FIG. 6 is bent by 90 degrees as shown in FIG. 7, the plate 154 forming the air holes 152 rises as shown in FIG. The vent hole 152 is greatly opened to form an opening 153, and the moisture absorbing material stored in the spacer 150 leaks from the opening 153.

  On the other hand, in the spacer 116 shown in FIG. 4, even if the spacer is bent 90 degrees as shown in FIG. 5, the bent portion 117 does not swell, so the size of the air hole 124 does not change. is there. Therefore, leakage of the hygroscopic material from the air hole 124 can be prevented.

FIG. 9 is a cross-sectional view showing a second embodiment of the spacer 216. Deformable housing portion 226 of the spacer 216 has an intermediate plate 218 which extends from the right wall 216A, an upper plate 220 and lower plate 222 extending from the left wall surface 216B, the upper intermediate plate 218 Plate 220 and the lower plate 222 are sandwiched with a predetermined gap. The predetermined gap forms a vent hole 224. Even if the spacer 216 is bent by 90 degrees, the bent portion does not swell up, so that it is possible to prevent the hygroscopic material from leaking from the vent hole 224.

FIG. 10 is a cross-sectional view showing a reference example of the spacer 316. The spacer 316 includes a concave portion (concave portion) 318 in which a hygroscopic agent is accommodated, and a lid plate 322 attached to the concave portion 318 and having a vent hole 324 formed therein. Even if the spacer 316 is bent by 90 degrees, the bent portion does not squeeze up and leakage of the hygroscopic material from the vent hole 324 can be prevented. Further, the deformation absorbing portion 326 is configured by attaching the cover plate 322 to the mounting groove portions 328 and 328 formed in the concave portion 318 with play in the horizontal direction. It corresponds to the amount of elastic deformation.

FIG. 11 is a cross-sectional view showing another embodiment of the spacer 416. The spacer 416 is formed by dividing the moisture absorbent storage portions 418 and 418 into two in the length direction of the spacer 416, and a ventilation hole 424 is formed on each upper surface. The space 426 between the storage portions 418 and 418 forms a deformation absorbing portion, and by using this space 426, the left and right storage portions 418 and 418 are elastically deformed in a direction toward and away from the glass. Absorbs plate displacement.

  In addition, the deformation | transformation absorption part with which the spacer of this invention is provided is not limited to the structure shown in these embodiment, What can absorb the displacement of the out-of-plane direction of the glass plate which comprises multilayer glass. Can be preferably used.

Main section enlarged cross-sectional view showing a reference example of double- glazed glass Schematic diagram when the glass plate of the multilayer glass shown in FIG. 1 is displaced in the shrinking direction Schematic diagram when the glass plate of the multilayer glass shown in FIG. 1 is displaced in the expansion direction Sectional drawing which showed 1st Embodiment of the spacer The perspective view which showed the state when the spacer shown in FIG. 4 was bent 90 degree | times. Sectional view showing an example of a conventional spacer The perspective view which showed the state when the spacer shown in FIG. 6 was bent 90 degree | times. The perspective view which expanded and showed the state of the bending part of the spacer shown in FIG. Sectional drawing which showed 2nd Embodiment of the spacer Sectional view showing the form of the spacer reference example Sectional view showing the form of another reference example of spacer

DESCRIPTION OF SYMBOLS 10 ... Multi-layer glass, 12 ... Glass plate, 14 ... Air layer, 16, 116, 216, 316, 416 ... Spacer, 18 ... Primary sealing material, 20 ... Secondary sealing material, 22 ... Hygroscopic agent, 24, 124, 224, 324, 424 ... vent hole, 26, 126, 226, 326, 426 ... deformation absorbing portion, 28, 120, 220 ... upper plate, 30, 122, 222 ... lower plate, 32, 34, 36, 128, 130 132, stopper, 118, 218 ... intermediate plate

Claims (3)

The two glass plates are spaced apart by a spacer containing a hygroscopic agent, and the spacer and the two glass plates are bonded together by a sealing material, and the peripheral portion of the two glass plates and the spacer In the multi-layer glass in which the defined space is sealed with a sealing material,
The glass plate is rectangular, and the spacer is a spacer in which a straight rod-shaped molded body is bent 90 degrees at the corner of the glass plate, and is disposed along the four peripheral edges of the glass plate,
The spacer is formed with a deformation absorbing portion that deforms and absorbs the displacement in the out-of-plane direction of the two glass plates ,
The spacer is bonded to one glass plate of the two glass plates by the sealing material and to the other glass plate of the two glass plates by the sealing material. Having the other wall surface,
The deformation absorbing portion extends from the one wall surface in a direction orthogonal to the surface of the glass plate, and extends from the other wall surface in a direction orthogonal to the surface of the glass plate. A multi-layer glass comprising: a pair of plates, wherein the intermediate plate is sandwiched between the pair of plates with a predetermined gap .   The deformation absorbing portion of the spacer has a first regulating member that regulates a deformation amount when the two glass plates are displaced in a direction approaching each other, and when the two glass plates are displaced in a direction away from each other. The multilayer glass according to claim 1, wherein a second regulating member that regulates the amount of deformation is formed. The spacer is formed with a vent hole for contacting the hygroscopic agent in an air layer formed between the two glass plates, and the vent hole is connected to the intermediate plate of the deformation absorbing portion. 3. The multilayer glass according to claim 1, wherein the glass is formed by the predetermined gap between the pair of plates and is formed in a maze shape.

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