JP2012140767A - Double glazing window and assembly method of double glazing window - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double glazing window and an assembly method of a double glazing window.SOLUTION: Glass sheets 10 and 40 having a spacer are provided with a space between an outer peripheral surface of the spacer 20 and a sponge rubber 50. The space is filled with a secondary seal member 62, instead of being left as a void. In addition, a space between a cut end surface 16A of a glass sheet 16 of the glass sheet 10 having a spacer and the sponge rubber 50 is also filled with the secondary seal member 62. Consequently, the secondary seal material 62 has an L-shaped cross section, allowing the secondary seal member 62 to be bonded to a total of five surfaces including an inner surface of the existing glass window 14, an inner surface and the cut end surface 16A of the new glass sheet 16, the outer peripheral surface of the spacer 20, and the surface of the sponge rubber 50.

Description

  The present invention relates to a multilayer glass window and a method for assembling a multilayer glass window.

  Patent Document 1 proposes refurbishing the glass window into a multi-layer glass window by arranging a new glass plate in parallel with an existing glass window constructed in a building. By using existing glass windows as part of the double-glazed windows, construction costs can be reduced, construction periods can be shortened, existing glass windows need not be discarded, and sashes need not be replaced. There are advantages.

  As shown in FIG. 13, the method of assembling a double-glazed window of Patent Document 1 in which a spacer 2 and a new glass plate 3 are attached to the existing glass window 1 in the field to form a double-glazed window 4 is a novel method. The glass plate 3 is bonded to the existing glass window 1 via the spacer 2 with butyl rubber 5, and then the sealing material 7 is filled in the gap between the small edge surface 3 </ b> A of the new glass plate 3 and the flange 6.

Japanese Patent No. 4003908

  It is known that the moisture resistance performance and shape retention performance of a multi-layer glass window increase as the thickness of the sealing material increases. Here, since the multilayer glass window 4 of Patent Document 1 is filled with the sealing material 7 only in the gap between the small facet 3A of the new glass plate 3 and the flange 6, the thickness of the sealing material 7 is Thin and almost the same as the glass thickness. Therefore, the double-glazed window 4 of Patent Document 1 is concerned with moisture resistance and shape retention performance. As a double-glazed window, further improvement in durability is desired.

  Further, considering the movement of the new glass 3 during an earthquake, the glass is subjected to a sliding motion and a rocking motion due to the shaking of the earthquake, so that a load is applied to the sealing material. For this reason, the high modulus sealing material generally used in the double glazing cannot be used, and a low modulus sealing material excellent in deformation followability is used. As a result, the fixing of the new glass 3 was weak, and as a result, there was a concern that the durability of the multilayer glass was lowered.

  This invention is made | formed in view of such a situation, and it aims at providing the assembly method of a highly durable double glazing window and a double glazing window.

  In order to achieve the above object, the present invention provides a multi-layer glass window in which a glass plate with a new spacer having a substantially rectangular shape is bonded to a glass plate of an existing glass window via the spacer. The plate is configured to be smaller than the glass window, and the four sides of the glass plate with the spacer are arranged inside the four sides of the glass window, and the glass plate with the spacer and the peripheral portion of the glass of the glass window The sealing material for sealing the glass plate with the spacer, the glass plate of the glass window, and the spacer are all bonded, and the bonding surface of the sealing material and the glass plate with the spacer is the glass plate with the spacer. Provided is a double-glazed glass window characterized by two surfaces: a surface facing the glass window and a facet surface of the glass plate with a spacer.

  In order to achieve the above object, the present invention provides a step of preparing a substantially rectangular glass plate with a spacer on the site, the glass plate with a spacer on the site, and the spacer on a glass plate of an existing glass window. A bonding step for bonding the glass plate with the spacer so that the four sides of the glass plate with the spacer are positioned inside the four sides of the glass window; and the peripheral portion of the glass plate with the spacer and the glass window. The sealing material is bonded to all of the glass plate with the spacer, the glass plate of the glass window, and the spacer, and the sealing material and the glass plate with the spacer are bonded together. The bonding surface includes a surface of the glass plate with the spacer facing the glass window and a sealing step of bonding to the two surfaces of the edge surface of the glass plate with the spacer. It provides a method of assembling insulating glass windows.

  According to the present invention, the space between the outer peripheral surface of the spacer and the ridge is filled with the sealing material, and the space between the edge surface of the glass plate of the glass plate with the spacer and the ridge is also filled with the sealing material. Thereby, the cross-sectional shape of the sealing material becomes L-shaped, the inner surface of the existing glass window, in addition to the two surfaces of the glass plate with the spacer facing the glass window and the small surface of the glass plate with the spacer, The sealing material adheres to a total of five surfaces of the outer peripheral surface of the spacer and the surface of the sponge rubber installed between the flanges.

  Therefore, the double-glazed window of the present invention has a thicker sealing material and a larger area of an adhesive surface (interface) with the sealing material as compared with the double-glazed window of Patent Document 1. Therefore, according to the present invention, it is possible to assemble a durable multi-layer glass window with improved moisture resistance and shape retention performance at a construction site.

  In the multi-layer glass window of the present invention, it is preferable that the glass plate with a spacer is supported by a wall of an existing building through the sealing material and an elastic member.

  According to the present invention, even when an interlayer deformation occurs in the multi-layer glass window during an earthquake, the movement due to the locking of the glass plate with the spacer can be absorbed by the elastic member, so that the follow-up performance against the interlayer deformation is improved.

  In the multi-layer glass window of the present invention, it is preferable that the lower side portion of the glass plate with a spacer is supported by the ridge through a setting block.

  According to this invention, it was set as the structure which receives the dead weight of the glass plate with a spacer with a setting block. Thereby, since it is not necessary to receive the dead weight of the glass plate with a spacer with a sealing material, it can apply as a glass plate with a spacer even if it is a thick plate glass and a large plate glass.

  In the multi-layer glass window of the present invention, it is preferable that the upper side portion of the glass plate with a spacer is supported by the ridge via a tilt prevention member.

  According to the present invention, since the glass plate with a spacer is supported by the heel through the tilt prevention member so that the glass plate with the spacer does not tilt from the heel, the glass plate with the spacer is used until the sealing material is cured. Can be securely fixed at a desired position.

  According to the multilayer glass window and the method of assembling the multilayer glass window of the present invention, the moisture resistance and shape retention are improved, so that the durability of the multilayer glass window is improved.

The perspective view of the glass plate with a spacer of 1st Embodiment The principal part enlarged side view which showed the manufacturing process of the glass plate with a spacer shown in FIG. The perspective view which showed the state just before attaching a glass plate with a spacer to a glass window The perspective view which showed the corner key which connects a spacer in a corner The perspective view of the glass plate with a spacer of 2nd Embodiment The principal part expanded sectional view of the glass plate with a spacer shown in FIG. Explanatory drawing with sponge rubber and setting block attached to bag Side view just before attaching a glass plate with a spacer to an existing glass window Explanatory drawing of pressing glass plate with spacer against glass window using roller Front view of double-glazed glass window seen from the indoor side Lower vertical section of multi-layer glass window Upper vertical section of double-glazed glass window Longitudinal sectional view of a multi-layer glass window showing the position of a conventional secondary seal Longitudinal cross-sectional view of a double-glazed glass window showing a reference example for placing a secondary seal Longitudinal cross-sectional view of a double-glazed glass window showing a reference example for placing a secondary seal

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

  FIG. 1 is an overall perspective view of a glass plate 10 with a spacer according to the first embodiment. FIG. 2 is an enlarged side view of an essential part showing the manufacturing process of the glass plate 10 with a spacer in the order of (A) to (D).

  The glass plate 10 with the spacer is attached on the indoor side opening side of the existing glass window 14 fixed by being fitted into the glass window ridge 12 of the building as shown in the perspective view of FIG. It is a novel glass plate that forms a multi-layer glass window together with the window 14. A method for assembling the multi-layer glass window will be described later. Moreover, the glass plate 10 with a spacer may be attached to the outdoor opening side of the glass window 14.

  As shown in FIG. 2D, the glass plate 10 with a spacer is composed of a rectangular glass plate 16, a moisture-impermeable butyl rubber 18, a spacer 20, a moisture-impermeable butyl rubber 22, and a release paper tape 24. The glass plate 16 is smaller than the glass window 16 shown in FIG.

  As shown in FIGS. 2 (A) and 2 (B), the manufacturing method of the glass plate 10 with spacers is as follows. One side surface of the frame-shaped spacer 20 is located inside the peripheral portion of one surface 16A of the glass plate 16. 20A is bonded by butyl rubber 18. Next, as shown in FIGS. 2C and 2D, butyl rubber 22 is bonded to the other side surface 20B of the spacer 20, and the release paper tape 24 is bonded so as to cover the entire circumference of the butyl rubber 22. The release paper tape 24 is removed from the butyl rubber 22 immediately before the glass plate 10 with the spacer is attached to the glass window 14 (see FIG. 5). Thereby, the adhesive force of butyl rubber 22 is maintained until just before attaching glass plate 10 with a spacer to glass window 14.

  By passing through such a manufacturing process, the glass plate 10 with a spacer shown in FIG. 1 is manufactured in a factory. An example of the release paper tape 24 is a PET film. The spacer 20 is preferably black from the viewpoint of design.

  On the other hand, the Low-E film 26 is formed in the region inside the spacer 20 assembled in a frame shape on the one surface 16A of the glass plate 16 in order to improve the heat insulating property and heat shielding property of the multi-layer glass window. Is formed. As the Low-E film 26, a film in which the first oxide film, the Ag film, and the second oxide film are laminated in this order, and the type in which the heat ray shielding film itself is an oxide or a nitride are also applied. it can. In order to cover and protect the Low-E film 26, a protective sheet having substantially the same shape as the glass plate 16 that protects the entire Low-E film 26 may be bonded to the butyl rubber 22 instead of the release paper tape 24.

  The spacer 20 is made of an aluminum hollow mold, and granular silica gel 28 is sealed in the internal space. Further, a moisture absorption window 30 is opened on the opposing surfaces of the four spacers 20, 20... Arranged along the four sides of the glass plate 16. Further, the moisture absorption window 30 is sealed with an adhesive tape 32. This adhesive tape 32 is removed from the spacer 20 immediately before assembling the glass plate 10 with a spacer to the glass window 14 at the construction site. The adhesive tape is a very small gas-permeable material, so that the silica gel 28 is kept in a state of low moisture adsorption without being exposed to the atmosphere until the glass plate 10 with spacers is assembled to the glass window 14. Is done.

  In FIG. 2A, the butyl rubber 18 is bonded to the glass plate 16 side. However, the spacer 20 may be bonded to the glass plate 16 by bonding the butyl rubber 18 to one side surface 20A of the spacer 20. Similarly, the butyl rubber 18 may be applied and bonded to both side surfaces 20A and 20B of the spacer 20 at the same time. Moreover, in embodiment, although the normal plate glass of a single plate structure is illustrated as the glass plate 16, laminated glass, tempered glass, double strength glass, netted glass, heat ray absorption glass, heat ray reflective glass, etc. may be sufficient. . Furthermore, in order not to damage the glass plate 16 during handling of the glass plate 16, it is preferable to chamfer the corners of the glass plate 16 (for example, C chamfering) and also chamfer the edge of the small edge surface.

  The spacers 20 are connected to each corner by an L-shaped corner key 34 shown in FIG. The corner key 34 includes a main body block 34A and fitting portions 34B and 34B extending in a direction perpendicular to the main body block 34A. The two spacers 20 adjacent to the sawtooth portions of the fitting portions 34B and 34B, The two adjacent spacers 20 and 20 are connected to each other at right angles through the corner key 34 by being inserted into the internal space 20.

  Further, a through hole 34C is opened in the main body block 34A. This through hole 34C is formed from the outer end face 34D to the inner end face 34E of the main body block 34A, and is used as an air vent hole when the glass plate 10 with a spacer is bonded to the glass window 14 shown in FIG. That is, an air layer exists between the glass window 14 and the glass plate 10 with a spacer, but excess air generated in the process of adhering the glass plate 10 with a spacer to the glass window 14 passes through the through hole from the air layer. It is exhausted to the outside through 34C. Thereby, the internal pressure of the air layer becomes atmospheric pressure, and the butyl rubber can be sufficiently adhered with a small load during construction.

  As shown in FIG. 4, the through hole 34 </ b> C is closed by fitting the cap 36 after the glass plate 10 with the spacer is bonded to the glass window 14. The cap 36 includes a substantially conical main body portion 36A and a knob portion 36B. An operator grips the knob portion 36B and inserts the main body portion 36A into the through hole 34C. At this time, from the viewpoint of increasing the moisture permeability of the air layer, it is preferable that the main body portion 36A is made of a resin that is impermeable to moisture, and the butyl rubber 38 is applied to the peripheral portion of the main body portion 36A. In addition, after inserting the main body portion 36A into the through-hole 34C, it is preferable to cut the knob portion 36B from the main body portion 36A before placing a secondary seal described later on the peripheral portion of the multilayer glass window. . Furthermore, it is not necessary to provide the through holes 34 </ b> C in all the four corner keys 34 arranged at the corners of the spacer 20, and it is only necessary for one or two corner keys 34.

  FIG. 5 is a perspective view of the glass plate 40 with a spacer according to the second embodiment. FIG. 6 is an enlarged cross-sectional view of a main part of the glass plate 40 with a spacer. In addition, about the glass plate 40 with a spacer, the same code | symbol is attached | subjected about the same or similar member as the glass plate 10 with a spacer shown in FIG. 1, FIG. 2, and description is abbreviate | omitted.

  The Low-E film 42 formed on one surface 16A of the glass plate 16 of the glass plate with spacer 40 is a heat ray in which a first oxide film, an Ag film, and a second oxide film are laminated in this order. It is a shielding laminated film. Further, in the glass plate with spacers 40, the protective sheet 44 is detachably bonded to the butyl rubber 22 so as to cover one surface 16A of the glass plate 16, that is, to cover the entire surface of the Low-E film 42. .

  The Low-E film 42 is formed on the entire surface of the one surface 16A of the glass plate 16 by sputtering, but the portion formed on the outer peripheral portion of the glass plate 16 to which the butyl rubber 18 is bonded is trimmed and removed. . In addition, the laminated type Low-E film 42 has an advantage that the heat ray shielding film itself is superior to the Low-E film type in which the heat ray shielding film itself is an oxide or nitride, but the heat ray shielding film itself is an oxide. Further, it has a characteristic that it is more easily damaged than a Low-E film of a nitride type.

  Therefore, in order to prevent the Low-E film 42 from being scratched, the entire surface of the Low-E film 42 is covered with the spacer-attached glass plate 40 to which the spacer 20 has been attached in advance at the factory before shipping. A rectangular protective sheet 44 is detachably bonded to the butyl rubber 22. This protective sheet 44 is removed from the butyl rubber 22 immediately before assembling the glass plate 40 with a spacer to the glass window 14 (see FIG. 5) at the construction site. Thereby, the glass plate 40 with a spacer can be conveyed from a factory to a construction site without damaging the Low-E film 42.

  Further, in the glass plate 40 with a spacer, a desiccant 48 is enclosed in a space 46 sealed by the one surface 16 </ b> A of the glass plate 16, the protective sheet 44, and the spacer 20.

  The stacked type Low-E film 42 has an Ag film that is weak against moisture (humidity). For this reason, if the Low-E film | membrane 42 is exposed to air | atmosphere, it will deteriorate. For this reason, since the desiccant 48 is enclosed in the space 46, the Low-E film 42 can be protected from moisture, and the durability of the multilayer glass window in which the Low-E film 42 is formed can be improved. it can.

  In addition, after manufacturing the glass plate 40 with a spacer in a factory, when the glass plate 40 with a spacer is stored in a factory for a long period of time, the encapsulating amount of the desiccant 48 is increased. That is, what is necessary is just to adjust the enclosure amount of the desiccant 48 according to the delivery date of the glass plate 40 with a spacer.

  The glass plates 10 and 40 with spacers described above are pre-bonded to the new glass plate 16 with the butyl rubber 18 at the factory, and the butyl rubber 22 is pre-bonded to the spacer 20 and the butyl rubber 22 is released from the mold. It is manufactured by adhering the paper tape 24 and the protective sheet 44 detachably.

  When the glass plates 10 and 40 with spacers are carried from the factory to the construction site shown in FIG. 5 to assemble the multi-layer glass window, the release paper tape 24 and the protective sheet 44 are removed from the butyl rubber 22, and the butyl rubber 22 is removed. It is only necessary to adhere to the existing glass window 14. Therefore, by using the glass plates 10 and 40 with spacers of the embodiment, the problem of adhesion quality, that is, the construction quality can be improved and the trouble at the construction site can be reduced. Windows can be easily assembled at the construction site.

  Next, an example of a method for assembling a multi-layer glass window using the glass plates 10 and 40 with spacers will be described. Here, the glass plate with spacers 10 will be described as an example, and the glass plate with spacers 40 is substantially the same as the method for assembling a multi-layer glass window with the glass plate with spacers 10, and the description thereof will be omitted.

  First, as shown in FIG. 3 and FIG. 7, prismatic sponge rubbers (elastic members) 50, 50... Are attached along the vertical and horizontal planes 12, and the glass plate 10 with spacers is mounted on the horizontal side 12 on the bottom side. The setting blocks 52 and 52 which receive the weight of the are attached. One or more setting blocks 52 may be provided. Further, a groove 56 is cut and formed in the sealant material 54 placed on the top horizontal pin 12, and an upper piece 58 </ b> A of the tilt prevention plate (tilt prevention member) 58 is fitted and fixed in the groove 56.

  Next, the release paper tape 24 is peeled off from the glass plate 10 with spacer as shown in FIG. 3 to expose the butyl rubber 22 as shown in the side view of FIG. 8, and the adhesive tape 32 shown in FIG. The lower edge of the glass plate with spacer 10 is placed on the setting blocks 52 and 52, and the upper portion of the glass plate with spacer 10 is engaged with the engagement piece 58B of the tilt prevention plate 58 shown in FIG. Let Thereby, the four sides of the glass plate 10 with a spacer are located inside the four sides of the glass window 14. Then, the glass plate 10 with a spacer is pressed toward the glass window 14, and the glass plate 10 with the spacer is bonded to the glass window 14 with butyl rubber 22.

  Next, in order to ensure adhesion of the butyl rubber 22 to the glass surface, the glass plate 16 is pressed against the glass window 14 by a roller 60 as shown in FIG. Under the present circumstances, the air in the air layer between the glass window 14 and the glass plate 10 with a spacer is exhausted outside through the through-hole 34C. Thereby, the pressure in the air layer can be reduced (equal to the external atmospheric pressure) with respect to the pressurization at the time of pressure bonding. Accordingly, the butyl rubber 22 can be crimped with a sufficient crushing margin even in the field construction, and at the same time, the air layer made of the glass window 14 and the glass plate 10 with the spacer can be satisfactorily constructed, and The concern about peeling of the sealing part and moisture-proof part can be solved.

  On the other hand, when the pressure bonding of the butyl rubber 22 by the roller 60 shown in FIG. 9 is completed, the through hole 34C is sealed by the main body portion 36A of the cap 36, and the knob portion 36B is cut from the main body portion 36A.

  Next, a secondary sealing material (sealing material) 62 is placed (filled) on the peripheral portions of the four sides of the glass window 14 and the glass plate 10 with a spacer as shown in the plan view of FIG. And the gap between the sponge rubber 50 is sealed. Thereby, the multi-layer glass window 64 is assembled. As the secondary sealant 62, a polysulfide sealant or a silicone sealant having high adhesion to glass is used.

  As shown in FIGS. 11 and 12, the filling form of the secondary sealing material 62 is filled with the secondary sealing material 62 in a space surrounded by the existing glass window 14, the outer peripheral surface of the spacer 20 and the sponge rubber 50, and The secondary sealing material 62 is also filled in the space between the small edge surface 16 </ b> B of the glass plate 16 of the glass plate with spacer 10 and the sponge rubber 50.

  Thereby, the cross-sectional shape of the secondary sealing material 62 becomes L-shaped, and the inner side surface of the existing glass window 14 and the inner side surface of the new glass plate 16 (the surface on which the glass plate 10 with the spacer faces the glass window 14). The secondary sealing material 62 adheres to a total of five surfaces, that is, the facet 16B, the outer peripheral surface of the spacer 20, and the surface of the sponge rubber 50.

  Here, compared with the sealing material 7 of the multi-layer glass window 4 of Patent Document 1 shown in FIG. It is. On the other hand, the multilayer glass window 64 of the embodiment shown in FIGS. 11 and 12 has five adhesive surfaces as described above. Therefore, the multilayer glass window 64 of the embodiment can take a larger bonding area of the secondary sealing material 62 than the multilayer glass window 4 of Patent Document 1, and therefore the multilayer glass window 4 of Patent Document 1 In comparison, the moisture resistance and shape retention performance are improved. Therefore, in the embodiment, the multi-layer glass window 64 having excellent durability can be assembled at the construction site.

  Further, according to FIGS. 11 and 12, since the glass window 14 and the glass plate 16 are bonded by the secondary sealant 62, the force when the glass window 14 and the glass plate 16 are deformed due to an earthquake or the like is two. It is suppressed by the next sealing material 62, and the butyl rubber 18, 22 is less likely to weaken the adhesive strength of the glass. In addition, since the secondary sealing material 62 is in contact with the butyl rubbers 18 and 22, moisture entering from the outside is prevented from reaching the butyl rubbers 18 and 22, and the moisture resistance durability of the multilayer glass window 64 is further improved.

  Furthermore, in the multilayer glass window 64 of the embodiment, the sponge rubber 50 is disposed around the entire periphery of the secondary sealing material 62. For this reason, even when an interlayer deformation occurs in the multilayer glass window 64 at the time of an earthquake, the movement due to the locking of the glass plate 10 with the spacer can be absorbed by the sponge rubber 50. Therefore, according to the multilayer glass window 64 of the embodiment, the follow-up performance with respect to interlayer deformation is improved.

  Furthermore, since the multi-layer glass window 4 shown in FIG. 13 receives the weight of the glass plate 3 only by the sealing material 7, the load of the glass plate 3 acts on the sealing material 7 over a long period of time. For this reason, the multilayer glass window 4 has an unfavorable configuration in view of the durability of the sealing material 7.

  In order to solve this problem, in the multi-layer glass window 64 of the embodiment, the lower sealing surface of the glass plate 10 with the spacer is placed on the setting blocks 52 and 52 as shown in FIG. The load due to the weight of the glass plate 10 with a spacer is not applied to 62. Thereby, since it is not necessary to make the secondary sealing material 62 support the own weight of the glass plate 10 with a spacer, even if it is a heavy glass plate, such as thick plate glass and large plate glass, as the glass plate 16. Note that the present invention can also be applied to a multi-layer glass window that does not use the sponge rubber 50 and the setting block 52.

  Furthermore, by providing an anti-tilt plate 58 that prevents the glass plate with spacers 10 from falling over the glass plate with spacers 10, the glass plate with spacers 10 is positioned at a desired position until the secondary sealant 62 is cured. Can be securely fixed.

  As shown in FIG. 14A, the small sealing surface 16A of the glass plate 16 and the outer peripheral surface 20A of the spacer 20 are arranged on the same surface as shown in FIG. 14A. There is also a form of placing in a rectangular space surrounded by 20A and the setting block 52. Further, as shown in FIG. 14B, the small edge surface 16A of the glass plate 16 is brought into contact with the setting block 52, and is punched into a substantially square space surrounded by the glass window 14, the glass plate 16, the spacer 20, and the setting block 52. There is also a form to install.

  On the other hand, the plate thickness of the glass plate 16 is preferably 75% or more with respect to the plate thickness of the existing glass window 14.

  DESCRIPTION OF SYMBOLS 10 ... Glass plate with spacer, 12 ... Glass, 14 ... Glass window, 16 ... Glass plate, 16A ... Small face, 16B ... Small face, 18 ... Butyl rubber, 20 ... Spacer, 22 ... Butyl rubber, 24 ... Release paper tape, 26 ... Low-E film, 28 ... Silica gel, 30 ... Moisture absorption window, 32 ... Adhesive tape, 34 ... Corner key, 36 ... Cap, 38 ... Butyl rubber, 40 ... Glass plate with spacer, 42 ... Low-E film, 44 ... Protection Sheet, 46 ... Space, 48 ... Desiccant, 50 ... Sponge rubber, 52 ... Setting block, 54 ... Sealant material, 56 ... Groove, 58 ... Tilt prevention plate, 60 ... Roller, 62 ... Secondary sealant, 64 ... Duplex Layer glass window

Claims (5)

In a multi-layer glass window in which a glass plate with a new spacer having a substantially rectangular shape is bonded to the glass plate of an existing glass window via the spacer,
The glass plate with spacers is configured to be smaller than the glass window, and the four sides of the glass plate with spacers are arranged inside the four sides of the glass window,
The sealing material for sealing the glass plate with the spacer and the peripheral portion of the glass of the glass window,
The glass plate with the spacer, the glass plate of the glass window, and the spacer are all bonded to each other, and the adhesive surface of the sealing material and the glass plate with the spacer is the surface where the glass plate with the spacer faces the glass window. And a double-glazed glass window characterized in that it is two surfaces of the small edge surface of the glass plate with a spacer.   The multilayer glass window according to claim 1, wherein the glass plate with a spacer is supported by a wall of an existing building through the sealing material and an elastic member.   The multi-layer glass window according to claim 1 or 2, wherein a lower side portion of the glass plate with a spacer is supported by the ridge through a setting block.   4. The multi-layer glass window according to claim 1, wherein an upper side portion of the glass plate with a spacer is supported by the ridge through a tilt prevention member. Preparing a substantially rectangular glass plate with a spacer on site,
It is an adhesion process for adhering the glass plate with a spacer to the glass plate of an existing glass window at the site via the spacer, and the four sides of the glass plate with the spacer are inside the four sides of the glass window. A bonding process for bonding so as to be positioned;
A sealing step of sealing the periphery of the glass plate with a spacer and the glass window with a sealing material, and the sealing material is bonded to all of the glass plate with the spacer, the glass plate of the glass window, and the spacer. And the adhesion surface of the said sealing material and the said glass plate with a spacer is the sealing process which adhere | attaches two surfaces, the surface which the said glass plate with a spacer faces the said glass window, and the fore edge surface of the said glass plate with a spacer. When,
A method for assembling a multi-layer glass window.

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