JPWO2016068306A1 - Multiple glass shoji - Google Patents

Abstract

Provided is a multiple glass shoji capable of suppressing the swelling of the first frame due to the increase in the internal pressure of the hollow layer. According to the multiple glass shoji 120 of the embodiment, the glass plate 122, the glass plate 124, at least one intermediate glass plate 126, and the support plate 200 attached to the outer surface side portion 134 of the spacer 128 are provided. Since the spacer 128 is reinforced by the support plate 200, the swelling of the spacer 128 due to the increase in the internal pressure of the divided hollow layer 130 can be suppressed.

Description

  The present invention relates to a multiple glass shoji configured by separating three or more glass plates by a spacer which is a first frame.

When using window glass as the outer wall of a building, in order to increase the efficiency of indoor air conditioning, the prescribed heat insulation performance (heat transmissivity: U value (JIS R3107: 1998), unit: W / m ² · K) is required. For this reason, in recent years, a double-glazed glass (see Patent Document 1 or the like) having a high thermal insulation performance (that is, a low U value) compared to a single-plate glass plate tends to be used as a glass plate for window glass. is there.

  By the way, the applicant of the present application has proposed a multiple glass shoji in Patent Document 2 in which three or more glass plates are separated by one spacer portion (spacer). In the multiple glass shoji of Patent Document 2, one, two, or three intermediate plates (intermediate glass plates) are placed in a hollow layer between the first glass plate and the second glass plate. It is configured by arranging. According to this multiple glass shoji, the thickness of the hollow layer contributing to the heat insulation performance is increased as compared with the double-layer glass composed of two glass plates, so that the heat insulation performance is improved.

JP 2014-133675 A JP 2014-196642 A

  By the way, in the multiple glass shoji of Patent Document 2, the internal pressure due to the expansion of the gas in the hollow layer is increased in the spacer portion by the thickness of the hollow layer as compared with the double-layer glass composed of two glass plates. It takes a lot. For this reason, there was a concern that the spacer portion swells outside the hollow layer.

  As for the multiple glass shoji of patent document 2, the spacer part and the collar part are integrated, but the collar part is the inner side (inner wall part) of each peripheral part of a 1st glass plate and a 2nd glass plate. Therefore, it is difficult to sufficiently suppress the swelling of the spacer portion due to the increase in internal pressure.

  Moreover, the multiple glass shoji of patent document 2 is aiming at the weight reduction of the whole multiple glass shoji by employ | adopting the spacer part made from a synthetic resin. In this case, it is conceivable that the bulge caused by the increase in internal pressure is more prominent than that of the metal spacer portion having strong bending rigidity.

  This invention is made | formed in view of such a situation, and it aims at providing the multiple glass shoji which can suppress the swelling of the 1st frame resulting from the internal pressure rise of a hollow layer.

  In one aspect of the present invention, in order to achieve the above object, the first glass plate and the second glass plate are separated by a first frame body around the first glass plate and a hollow layer is formed. In the multiple glass shoji, in which a hollow layer is sealed to the first frame body at the periphery, and at least one intermediate glass plate is held by the first frame body in the hollow layer. Provided is a multiple glass shoji comprising a second frame attached to an outer surface opposite to the inner surface of the frame on the hollow layer side.

  According to one aspect of the present invention, in a multiple glass shoji composed of a first glass plate, a second glass plate, and at least one intermediate glass plate, the first attached to the outer surface of the first frame. Since the second frame body is provided and the first frame body is reinforced by the second frame body, the swelling of the first frame body due to the increase in the internal pressure of the hollow layer can be suppressed.

  In one embodiment of the present invention, it is preferable that the three intermediate glass plates are held on the first frame.

  According to one aspect of the present invention, multiple glass shojis that are assumed to be able to exert heat insulation performance to the maximum, that is, five glasses in which three intermediate glass plates are spaced apart by a hollow layer. Since the 2nd frame is arrange | positioned at the multiple glass shoji which consists of a board, the swelling of the 1st frame of the multiple glass shoji of this aspect can be suppressed.

  In one embodiment of the present invention, it is preferable that the second frame is attached to an outer surface of the first frame via a moisture permeation preventing layer.

  According to one aspect of the present invention, moisture permeation can be prevented from permeating into the hollow layer from the outside of the multiple glass shoji.

  In one embodiment of the present invention, the second frame body is a space portion surrounded by an inner wall portion of each of the first glass plate and the second glass plate and an outer surface of the first frame body. And the width of the second frame is configured to be smaller than the width of the first frame, the outer wall of the second frame, the first glass plate, and the second glass. It is preferable that a sealing material is filled between the inner wall portions of each plate.

  According to one embodiment of the present invention, the filling amount of a sealing material can be reduced. Moreover, the sealing material can be made into an optimal shape by the second frame. Moreover, even if the total thickness of the multiple glass shoji is changed, the sealing material can have a predetermined size by the second frame. Furthermore, since the outer wall portions on both sides of the second frame body are the objects to which the sealing material is to be applied, stable adhesion performance can be secured (two-surface adhesion). That is, the holding power of the sealing material can be expressed.

  In one embodiment of the present invention, a sealing material is filled in a space surrounded by an inner wall portion of each of the first glass plate and the second glass plate and an outer surface of the first frame, The second frame is preferably attached to the outer surface of the first frame via the sealing material.

  According to one aspect of the present invention, the second frame can also be used as a setting block for supporting the multiple glass shoji on the lower frame of the window frame.

  In one embodiment of the present invention, the second frame is preferably a hollow structure having a hollow portion.

  According to one aspect of the present invention, the rigidity of the second frame can be increased, and the size of the cross-sectional area of the hollow portion is set such that air convection does not occur, thereby insulating the second frame. Performance can also be improved. Moreover, the heat insulation performance of a 2nd frame can be improved further by filling a heat insulating material in a hollow part.

  According to the multiple glass shoji of the present invention, it is possible to suppress the swelling of the first frame due to the increase in the internal pressure of the hollow layer.

Sectional drawing of the lower part of the window to which the multiple glass shoji which concerns on embodiment was applied Whole perspective view of the multiple glass shoji shown in FIG. Vertical section of the lower part of the multiple glass shoji shown in FIG. Perspective view of corner key connecting spacers Perspective view of corner key that connects support plates together Main part explanatory drawing showing a state where the spacer and the corner key are connected by screws, and a state where the support plate and the corner key are connected by screws. Vertical sectional view of the lower part of the multiple glass shoji according to another embodiment Vertical sectional view of the lower part of the multiple glass shoji according to another embodiment Vertical sectional view of the lower part of the multiple glass shoji according to another embodiment Vertical sectional view of the lower part of the multiple glass shoji according to another embodiment

  The multiple glass shoji of the embodiment of the present invention will be described based on the attached drawings.

  The drawings illustrate preferred embodiments of the present invention, and the present invention is not limited to the illustrated drawings and the description thereof.

  FIG. 1 is a longitudinal sectional view of a lower portion of a window 100 on which a multiple glass shoji 120 according to the embodiment is mounted.

  The window 100 has an attachment frame 110 attached to the window frame 20 from the outdoor side inside the existing window frame 20 attached to the opening of the building frame, and the multiple glass shoddle 120 of the embodiment is attached to the attachment frame 110. Configured by mounting.

  The window frame 20 is configured by a four-sided frame of a lower frame 20A, an upper frame (not shown), and left and right vertical frames, and each frame member of the window frame 20 is fixed to the housing by screws. Similarly, the attachment frame 110 is configured by a four-sided frame of a lower frame 110A, an upper frame (not shown), and left and right vertical frames.

  Moreover, the code | symbol 50 of FIG. 1 is a pressing edge of an outdoor side, and the code | symbol 52 is an airtight material of an indoor side. The window frame 20 and the attachment frame 110 of the embodiment are both extruded materials of a hard synthetic resin material or an aluminum alloy, and the window frame 20 and the attachment frame 110 are window frames for FIX windows that cannot be opened and closed. .

  The multiple glass shoji 120 is configured by using a frame body in which four spacers described later are integrated, and five glass plates that are assumed to be able to exhibit the heat insulation performance to the maximum. is there. In addition, an argon gas or a krypton gas having a thermal conductivity smaller than that of air is sealed in the four divided hollow layers described later, so that the heat insulation performance is further improved. In addition, the multiple glass shoji 120 is included in the category of the multi-layer glass shoji, and includes a structure in which three or more glass plates are spaced apart.

[Overall configuration of multiple glass shoji 120]
FIG. 2 is an overall perspective view of the multiple glass shoddle 120, and FIG.

As shown in FIGS. 2 and 3, the multiple glass shoji 120 includes a glass plate (that is, a first glass plate) 122 disposed on the outdoor side of the building and a glass plate (that is, the second glass plate) disposed on the indoor side. Glass plate) 124, three intermediate glass plates 126A, 126B, 126C arranged between the glass plate 122 and the glass plate 124, the glass plate 122 and the glass plate 124, and an intermediate glass A spacer (that is, a first frame) 128 that holds the plates 126A, 126B, and 126C at a distance is provided, and a support plate (that is, a second frame) 200 that supports the spacer 128 from the outside. . At the corners of the glass plate 122 and the glass plate 124 and at the four corners where the end portions of the four spacers 128 abut each other, the end portions of the abutted spacers 128 are spacer connection members. The support plates 200 are connected to each other by corner keys (also referred to as corner pieces) 150 and configured in a frame shape, and are also abutted at the four corners at which the ends of the four support plates 200 are abutted. These end portions are connected to each other by a support plate corner key (also referred to as a corner piece) 250, which is a support plate connecting member, to form a frame shape.
The intermediate glass plates 126A, 126B, and 126C are simply referred to as the intermediate glass plate 126 when collectively referred to.

  The glass plate 122 and the glass plate 124 are separated by a spacer 128 at the periphery thereof. Thereby, a hollow layer is formed between the glass plate 122 and the glass plate 124. The hollow layer formed by the glass plate 122, the glass plate 124, and the spacer 128 is sealed by the spacer 128 at the periphery thereof, and the three intermediate glass plates 126A, 126B, and 126C are spaced from each other. Thus, the hollow layer is divided into four divided hollow layers 130. The support plate 200 is disposed so as to be attached to the outer surface of the spacer 128 opposite to the inner surface on the hollow layer side.

<Spacer 128>
As shown in FIG. 3, the spacer 128 is connected to the inner surface portion 132 and the outer surface side portion 134, and the inner surface portion 132 and the outer surface side portion 134 that maintain the distance between the glass plate 122 and the glass plate 124. It is comprised from the side part 136, 136 which opposes an inner wall part, and the several space part 140 with which the desiccant 138 (refer FIG. 1) is filled.

  The spacer 128 is provided with three rows of groove portions 142 in the inner surface portion 132 of the spacer 128 in order to hold a part of the peripheral portion of the three intermediate glass plates 126A, 126B, 126C. The three rows of groove portions 142 are formed in parallel along the longitudinal direction of the spacer 128 so that the three intermediate glass plates 126A, 126B, 126C are arranged in parallel.

  In the embodiment, by forming three rows of groove portions 142 for holding the intermediate glass plate 126, the space portion 140 of the groove 142 is divided into four in the left-right direction. The number of spaces 140 is determined according to the number of intermediate glass plates 126. The spacer 128 of the embodiment is integrally formed so as to have a plurality of spaces 140 and a plurality of grooves 142.

  The spacer 128 is molded by a spacer forming material. As the molding method, a molding method such as an extrusion molding method, a co-extrusion molding method, or an injection molding method can be used.

  As the spacer forming material, a synthetic resin material is preferably used. The synthetic resin material for forming the spacer is preferably a hard vinyl chloride resin material, an acrylonitrile / styrene resin material, or a material in which a glass fiber material is added, but is not limited to these thermoplastic synthetic resin materials. Various thermoplastic synthetic resin materials can also be used.

  Further, the spacer frame forming material is not limited to one type, and may be a composite structure using a plurality of types of materials. For example, it may be a composite structure frame made of different synthetic resin materials partially by different co-extrusion molding methods, or a composite structure frame made of a synthetic resin material and an aluminum material. In the case of this composite structure, it is only necessary that the composite structure is integrally formed of any one kind of spacer forming material. The integrally molded spacer 128 may be partially or entirely joined with different synthetic resin materials and / or metal materials. In particular, the spacer 128 formed of a hard vinyl chloride resin material or an acrylonitrile / styrene resin material has excellent heat insulation when used as the multiple glass shoji 120, is easy to be integrally molded, has excellent durability, and is inexpensive. It is.

  The groove part 142 of the spacer 128 of the embodiment is fitted with a glazing channel 144 for supporting the ends of the intermediate glass plates 126A, 126B, and 126C. The intermediate glass plates 126 </ b> A, 126 </ b> B, 126 </ b> C can be easily adhered and fixed to the groove 142 of the spacer 128 by the glazing channel 144. Further, the thickness of each divided hollow layer 130 can be changed by decentering the glazing channel 144. In addition, even when the internal pressure of the divided hollow layer 130 decreases and the spacer 128 deforms toward the divided hollow layer 130 when the temperature decreases, the pressure applied to the intermediate glass plates 126A, 126B, and 126C from the spacer 128 by the glazing channel 144. Can be mitigated by the glazing channel 144.

  Further, the glazing channel 144 can be partially disposed in the groove 142. By providing a portion in which the glazing channel 144 is not disposed in the groove 142, the divided hollow layers 130 can be communicated with each other, and the pressure inside each divided hollow layer 130 can be equalized.

  Therefore, even when the volume of the divided hollow layer 130 increases or decreases as the temperature increases or decreases, the change in volume of the plurality of divided hollow layers 130 can be absorbed by the entire divided hollow layer 130. In the case where a portion where the glazing channel 144 is not partially provided is provided, the portion is preferably provided near the corners of the respective sides of the intermediate glass plates 126A, 126B, 126C.

  The glazing channel 144 is preferably made of a resin having a Shore A hardness of 50 to 90 degrees (for example, vinyl chloride resin or urethane resin) or rubber. If the Shore A hardness is less than 50 degrees, it is too soft and it is difficult to obtain a sufficient holding force for the intermediate glass plates 126A, 126B, 126C. If the Shore A hardness exceeds 90 degrees, the intermediate glass plate is too hard. This is because it is difficult to fit 126A, 126B, and 126C.

  The glazing channel 144 is not limited to the shape shown in FIGS. 1 and 3, and glazing channels 144 having other shapes can be used.

  When the two glass plates 122 and 124 have a rectangular flat plate shape, the glass plates 122 and 124 are separated by four spacers 128 arranged in the vicinity of the periphery of the four sides.

<Corner key 150>
FIG. 4 is a perspective view showing a corner key 150 for connecting the spacers 128 to each other.

  At the four corners where the end portions of the spacers 128 are abutted, the adjacent spacers 128 are connected to each other by a corner key 150 that is a spacer connecting member, thereby forming a continuous frame-shaped spacer. Hereinafter, this spacer frame may be simply referred to as a spacer.

  The spacer 128 has an end face 160 that faces the main body 152 of the corner key 150. A through hole 162 is formed in the inner surface 132 of the spacer 128. The through hole 162 communicates with the space 140.

  The corner key 150 has a main body portion 152 and an insertion portion 154 that protrudes from the main body portion 152 and is arranged in an L shape, and a through hole 156 is formed in the insertion portion 154. In the corner key 150, an insertion portion 154 arranged in an L shape is integrally formed with the main body portion 152 corresponding to the plurality of space portions 140 of the spacer 128.

  The insertion part 154 of the corner key 150 is inserted into the space part 140 of the spacer 128 until the end surface 160 of the spacer 128 contacts the main body part 152 of the corner key 150. The cross-sectional area of the insertion portion 154 is smaller than the cross-sectional area of the space portion 140, and the insertion portion 154 is inserted with almost no contact with the inner wall of the space portion 140, so that the occurrence of cracks and the like in the spacer 128 is suppressed. can do.

  When the spacer 128 and the corner key 150 are connected, the through hole 162 of the spacer 128 and the through hole 156 of the insertion portion 154 of the corner key 150 are aligned at a position where they overlap each other when viewed from the inner surface portion 132 side. A screw 158 as a fixing member is inserted into the through hole 162 of the spacer 128 from the outside of the space 140. The screw 158 passes through the inner surface portion 132 of the spacer 128 and reaches the through hole 156 of the insertion portion 154. By screwing the screw 158 from the outside of the space portion 140, the screw 158 is fastened to the through hole 162 of the spacer 128 and the through hole 156 of the insertion portion 154. Since the screw 158 penetrates the spacer 128, the spacer 128 and the insertion portion 154 of the corner key 150 can be securely fixed by the screw 158.

  Here, the outside of the space part 140 means the opposite side of the space part 140 with the spacer 128 as a boundary with respect to the space part 140 formed inside the spacer 128. In the embodiment, an example in which the screw 158 is inserted from the outer side of the inner surface part 132 toward the space part 140 is shown. However, if the screw 158 is outside the space part 140, the outer side part 134 or the outer side parts 136 and 136 are outside. It is also possible to insert a screw 158 toward the space 140 from the top.

  In the embodiment, the through hole 162 is formed in the spacer 128 and the through hole 156 is formed in the insertion portion 154 as the pilot hole of the screw 158. For example, when a tapping screw is used as the screw 158 that is a fixing member, A through-hole can be directly opened in the spacer 128 and the insertion portion 154.

  In the embodiment, the corner key 150 is fixed with the screws 158 at two locations on the side close to the glass plates 122 and 124 of the spacer 128, but the present invention is not limited to this. For example, it can be fixed at four locations where the space 140 is formed or at two locations located inside the spacer 128.

  The corner key 150 having the main body portion 152 and the insertion portion 154 is preferably integrally molded with a hard synthetic resin material (for example, a hard polyvinyl chloride resin material, an acrylonitrile / styrene resin material, or a polypropylene resin material). The integral molding means that the corner key forming material is molded by an integral molding method such as a shaving method, a molding method, a modeling method using a 3D printer, or an injection molding method. If integrally molded in this way, the corner key 150 can be easily formed into a single member, the number of parts of the corner key 150 can be reduced, and the assembly process can be simplified.

<Divided hollow layer 130>
In the four divided hollow layers 130 shown in FIGS. 1 and 3, argon gas having a thermal conductivity lower than that of air is enclosed, and the heat insulating performance of the multiple glass shovel 120 is enhanced. In addition, the argon gas is dried by the desiccant 138 stored in the space 140 of the spacer 128. This prevents internal condensation of the glass plates 122 and 124 and the intermediate glass plates 126A, 126B, and 126C. Furthermore, the thickness of the division | segmentation hollow layer 130 is set to 13 mm-17 mm which is the thickness which can fully exhibit the heat insulation performance. That is, the thickness of the divided hollow layer 130 is set so as to have a width of 2 mm before and after the optimum value (15 mm) at which the heat insulation performance can be maximized. The number of divided hollow layers 130 is determined according to the number of intermediate glass plates 126.
If high heat insulation is not particularly required, the above-described divided hollow layer 130 may be filled with dry air or other inert gas.

<Glass plates 122 and 124>
In many usual embodiments, the glass plates 122 and 124 are rectangular flat glass plates, and each thickness is preferably in the range of 1.3 mm to 3 mm in order to reduce the weight. The dimensions of the plates 122 and 124 are preferably the same or substantially the same.

  Further, the glass plates 122 and 124 may have different thicknesses as long as they are within the thickness range. Furthermore, the glass plates 122 and 124 are preferably chemically strengthened glass having sufficient strength even if the thickness is reduced. That is, by making the glass plates 122 and 124 chemically tempered glass, impact resistance performance and wind pressure resistance performance can be obtained even if the thickness is 1.3 mm to 3 mm.

  A chemically strengthened glass plate is a glass plate containing a Na component or a Li component such as soda lime silicate glass immersed in a molten salt such as potassium nitrate, and has a small atomic diameter Na ion and / or Alternatively, the strength is increased by replacing the Li ions with K ions having a large atomic diameter present in the molten salt to form a compressive stress layer on the surface layer of the glass plate. According to the chemically strengthened glass, even a glass plate having a plate thickness of 1.3 mm or less has a sufficiently high breaking strength. Therefore, if a chemically strengthened glass plate is used as the glass plates 122 and 124, even if the glass plates 122 and 124 are thin plates having a thickness of 2 mm to 3 mm, sufficient strength as the glass plates 122 and 124 disposed outside. Can be obtained.

<Intermediate glass plates 126A, 126B, 126C>
The intermediate glass plates 126A, 126B, and 126C are rectangular flat glass plates, and the thicknesses of the intermediate glass plates 126A, 126B, and 126C are in the range of 1 mm to 2 mm in order to reduce the weight. The dimensions of the intermediate glass plates 126A, 126B, and 126C are Are preferably the same or substantially the same size.

  The intermediate glass plates 126A, 126B, and 126C may have different thicknesses as long as they are within the thickness range. Further, similar to the glass plates 122 and 124, the intermediate glass plates 126A, 126B, and 126C may be chemically strengthened glass having sufficient strength even if the thickness is reduced. For example, chemically tempered glass having a thickness of 1 mm to 2 mm has a static bending strength equivalent to that of non-tempered glass such as float glass having a thickness of 3 mm to 6 mm.

  The intermediate glass plates 126A, 126B, and 126C are preferably in the shape of a similar rectangular shape having a smaller size than the glass plates 122 and 124 so that they can be inserted into the groove 142 of the spacer 128.

  In the embodiment, three intermediate glass plates 126 </ b> A, 126 </ b> B, 126 </ b> C are exemplified, but at least one intermediate glass plate 126 may be provided between the glass plates 122, 124. That is, the multiple glass shoji 120 is configured by including at least one intermediate glass plate 126. Further, the number of intermediate glass plates may be four or more. Therefore, according to the multiple glass shoji 120, even when the temperature of the divided hollow layer 130 decreases and the internal pressure of the divided hollow layer 130 decreases, the end of the intermediate glass plate 126 supports the spacer 128. The intermediate glass plate 126 can suppress deformation toward the divided hollow layer 130.

<Low Emission Films 166A, 166B, 166C, 166D>
As shown in FIG. 1, Low-E (Low-Emissivity) is provided on at least one inner surface of the glass plates 122 and 124 facing the divided hollow layer 130 and on the inner surface of the intermediate glass plates 126A and 126C facing the intermediate glass plate 126B. Low emission films 166A, 166B, 166C, and 166D such as films are formed. That is, the glass plates 122 and 124 and the intermediate glass plates 126A and 126C can be configured as Low-E glass.

Low-E glass is, for example, a low-emission film mainly composed of tin oxide (SnO ₂ ) formed on the surface of a glass plate using a chemical vapor deposition apparatus or a sputtering apparatus, or silver (Ag). The main low emission film is formed using a sputtering apparatus or the like, and has a function of reducing the emissivity of thermal energy by infrared rays. Here, the low emission film mainly composed of silver (Ag) includes a type in which a silver film is laminated with an oxide film, a nitride film or the like. That is, Low-E glass has a performance that hardly allows heat to pass through, and thus has high heat shielding properties and heat insulation properties. In addition, the low-emission film mainly composed of silver has the property of being easily oxidized by moisture in the air. Therefore, when used for double-glazed glass, it should be formed on the side facing the sealed hollow layer. Is preferred. In addition, the low-emission film mainly composed of tin oxide has lower heat ray reflection performance and lower heat-shielding performance than the low-emission film mainly composed of silver, but compared with the low-emission film mainly composed of silver. Thus, there is an advantage that it is difficult to oxidize and is not easily damaged because of high mechanical durability.

  In the multiple glass shoji 120, when Low-E glass is used, the emissivity of the low emission films 166A, 166B, 166C, 166D can be made different. Thereby, the temperature of the division | segmentation hollow layer 130 and the temperature rise of intermediate | middle glass plate 126A, 126B, 126C can be suppressed, and the risk called a "thermal crack" can be eliminated.

  For example, a low radiation film 166A having a relatively low emissivity is formed on the inner surface of the outdoor glass plate 122. A low emission film 166B having a higher emissivity than the low emission film 166A is formed on the surface of the intermediate glass plate 126A facing the intermediate glass plate 126B. A low emission film 166B having a higher emissivity than the low emission film 166A is formed on the surface of the intermediate glass plate 126C facing the intermediate glass plate 126B. A low radiation film 166D having a higher emissivity than the low radiation film 166A is formed on the inner surface of the glass plate 122 on the outdoor side. The low emissivity films 166B, 166C, and 166D may have the same or different vertical emissivities. Further, no low radiation film is formed on the intermediate glass plate 126B.

  By providing the low radiation film 166A having a relatively low emissivity on the glass plate 122 on the outdoor side, it is possible to suppress the temperature rise inside the divided hollow layer 130 and the temperature rise of the intermediate glass plates 126A, 126B, and 126C. Further, by using a transparent glass plate instead of Low-E glass as the central intermediate glass plate 126B where the glass temperature rises greatly, an increase in temperature near the center of the intermediate glass plate 126 can be suppressed.

  On the other hand, since the low radiation films 166B and 166C of the intermediate glass plates 126A and 126C have a higher emissivity than the low radiation film 166A, the solar radiation heat is highly permeable and heat is prevented from being absorbed by the intermediate glass plate 126. It is easy to be transmitted to the glass plate 124 on the indoor side. Therefore, it is possible to suppress the temperature absorption of the intermediate glass plates 126A and 126C of the divided hollow layer 130 while ensuring the heat insulating performance.

  By setting it as the above-mentioned structure, the temperature rise of intermediate glass plate 126A, 126B, 126C and the division | segmentation hollow layer 130 can be suppressed, a thermal stress can be reduced, and a "thermal crack" can be suppressed.

<Support plate 200>
As shown in FIGS. 1 and 3, the support plate (that is, the second frame) 200 is a member that supports and reinforces the spacer (that is, the first frame) 128. For this reason, the support plate 200 is a position facing the outer surface side portion (outer surface) 134 of each spacer 128 and is attached to the outer surface side portion 134 via a moisture permeation preventing layer 190 described later. The moisture permeation preventing layer 190 is not essential, and the support plate 200 may be attached so as to directly contact the outer surface side portion 134. The support plate 200 is connected by a corner key 250.

  According to the multiple glass shoji 120 of the embodiment, since the spacer 128 is supported from the outside by the support plate 200, the internal pressure of the divided hollow layer 130 increases due to the temperature rise, and the spacer 128 is opposite to the divided hollow layer 130. Even when trying to expand to the side, the support plate 200 can prevent the spacer 128 from expanding outward.

  By the structure of the multiple glass shoji 120, the thickness of the hollow layer between the glass plate 122 and the glass plate 124 becomes very thick compared with the multilayer glass which consists of two normal glass plates. For this reason, the pressure that the spacer 128 receives from the thermally expanding hollow layer is much larger than that of the multi-layer glass, and a single spacer 128 may not be able to cope with it. In addition, when the spacer 128 is made of resin, it has a property of being easily expanded as compared with a metal. Therefore, in the multiple glass shovel 120 of the embodiment, since the support plate 200 that supports the outside of the spacer 128, reinforces the spacer 128, and suppresses the expansion of the spacer 128 is provided, it can counter the increased internal pressure. Can do. Thereby, the multiple glass shoji 120 with a long service life can be provided. The illustrated support plate 200 is a hollow structure having four hollow portions 202 in the cross-sectional shape.

  Regarding the shape of the support plate 200, the support plate 200 preferably has substantially the same length as the spacer 128 and a width smaller than the width of the spacer 128 in order to support the spacer 128.

  The support plate 200 is housed in a space surrounded by the inner wall portion of the glass plate 122, the inner wall portion of the glass plate 122, and the outer surface side portion 134 of the spacer 128. In addition, a sealant is provided between one outer wall portion of the support plate 200 and the inner wall portion of the glass plate 122 and between the other outer wall portion of the support plate 200 and the inner wall portion of the glass plate 122. The next sealing material 182 is filled.

  In the embodiment, the support plate 200 is integrally formed so as to have a plurality of hollow portions 202. The support plate 200 is molded from a support plate forming material. As the molding method, a molding method such as an extrusion molding method, a coextrusion molding method, or an injection molding method can be used.

  As the support plate forming material, a synthetic resin material is preferably used. The synthetic resin material for forming the support plate is preferably a hard vinyl chloride resin material, an acrylonitrile / styrene resin material, or a material in which a glass fiber material is added, but is not limited to these thermoplastic synthetic resin materials. Various thermoplastic synthetic resin materials can also be used.

  Further, the support frame forming material is not limited to one type, and may be a composite structure using a plurality of types of materials. For example, it may be a composite structure frame made of different synthetic resin materials partially by different co-extrusion molding methods, or a composite structure frame made of a synthetic resin material and an aluminum material. In the case of this composite structure, it is only necessary that the composite structure is integrally formed of any one kind of spacer forming material. The integrally formed support plate 200 may be partially or entirely joined with different synthetic resin materials and / or metal materials. In particular, the support plate 200 formed of a hard vinyl chloride resin material or acrylonitrile / styrene resin material is excellent in heat insulation when used as the multiple glass shoji 120, easy to be integrally molded, and excellent in durability. Inexpensive.

<Corner key 250>
FIG. 5 is a perspective view of a corner key 250 that connects the support plates 200 together.

  At the corners at the four corners where the end portions of the support plate 200 are abutted, the adjacent support plates 200 are connected to each other by a corner key 250 that is a support plate connecting member to form a continuous frame-shaped spacer.

  The support plate 200 has an end face 230 that faces the main body 252 of the corner key 250. A through hole 232 is formed in the outer surface portion 214 of the support plate 200. The through hole 232 passes through the hollow portion 202.

  The corner key 250 has a main body portion 252 and an insertion portion 254 that protrudes from the main body portion 252 and is arranged in an L shape, and a through hole 256 is formed in the insertion portion 254. In the corner key 250, an insertion portion 254 arranged in an L shape is formed integrally with the main body portion 252 corresponding to the plurality of hollow portions 202 of the support plate 200.

  The insertion portion 254 of the corner key 250 is inserted into the hollow portion 202 of the support plate 200 until the end surface 230 of the support plate 200 contacts the main body portion 252 of the corner key 250. The cross-sectional area of the insertion portion 254 is smaller than the cross-sectional area of the hollow portion 202, and the insertion portion 254 is hardly in contact with the inner wall of the hollow portion 202, so that the occurrence of cracks or the like in the support plate 200 can be suppressed.

  When the support plate 200 and the corner key 250 are connected, the through hole 232 of the support plate 200 and the through hole 256 of the insertion portion 254 of the corner key 250 are aligned with each other. A screw 258 as a fixing member is inserted into the hole 232 of the support plate 200 from the outer surface portion 214. The screw 258 passes through the support plate 200 and reaches the through hole 256 of the insertion portion 254. By screwing the screw 258 from the outside of the outer surface portion 214, the screw 258 is fastened to the through hole 232 of the support plate 200 and the through hole 256 of the insertion portion 254. Since the screw 258 penetrates the support plate 200, the support plate 200 and the insertion portion 254 of the corner key 250 can be securely fixed by the screw 258.

  In the embodiment, the through hole 232 is formed in the support plate 200 and the through hole 256 is formed in the insertion portion 254 as the pilot hole of the screw 258. For example, when a tapping screw is used as the screw 258 as a fixing member, the tapping screw is used. Thus, a through hole can be directly opened in the support plate 200 and the insertion portion 254.

  In the embodiment, the screws 258 are fixed to the corner key 250 at two locations on the side close to the glass plates 122 and 124 of the support plate 200. However, the present invention is not limited to this. For example, it can be fixed at four locations where the hollow portion 202 is formed, or at two locations located inside the support plate 200.

  The corner key 250 having the main body portion 252 and the insertion portion 254 is preferably integrally molded from a hard synthetic resin material (for example, a hard polyvinyl chloride resin material, an acrylonitrile / styrene resin material, or a polypropylene resin material). The integral molding means that the corner key forming material is molded by an integral molding method such as a shaving method, a molding method, a modeling method using a 3D printer, or an injection molding method. If integrally molded in this way, the corner key 250 can be easily formed into a single member, the number of parts of the corner key 250 can be reduced, and the assembly process can be simplified. .

  FIG. 6 is an explanatory view showing a state in which the spacer 128 and the corner key 150 are connected by screws 158 and a state in which the support plate 200 and the corner key 250 are connected by screws 258. As shown in FIG. 6, a support plate 200 is disposed outside the spacer 128, and the spacer 128 is supported and reinforced by the support plate 200.

<Sealant 180, secondary sealant 182>
As shown in FIGS. 1 and 3, the multiple glass shoji 120 includes a sealing material 180 and a secondary sealing material 182. Side portions 136 and 136 of the spacer 128 facing the glass plate 122 and the glass plate 124 are joined to the glass plate 122 and the glass plate 124 by butyl rubber which is a sealing material 180.

  The outer surface side portion 134 of the spacer 128 is filled with a polysulfide-based or silicone-based sealing material that is the secondary seal material 182. Thereby, the multiple glass shoji 120 is configured. The sealing material 180 and the secondary sealing material 182 are not limited to the above form, and the sealing material to be bonded on the glass plates 122 and 124 and the sealing material applied to the outer surface side portion 134 side of the spacer 128 are made of the same material. Also good. Furthermore, you may have another sealing material which protects the secondary sealing material 182 in the outer periphery of the secondary sealing material 182. FIG.

<Moisture permeation prevention layer 190>
As shown in FIGS. 1 and 3, it is preferable that a moisture permeation preventing layer 190 for preventing moisture from permeating from the outside is formed on the side of the divided hollow layer 130 of the multiple glass shoji 120. In particular, when the spacer 128 is formed of a synthetic resin material, for example, a hard polyvinyl chloride resin material, or an acrylonitrile / styrene resin material, the material itself is about the same as an aluminum spacer that has a high moisture permeation prevention property. There is a demand for moisture permeability prevention.

  As the moisture permeation preventing layer 190, a layer made of a material capable of preventing moisture from permeating through the spacer 128 itself into the divided hollow layer 130 is selected. The moisture permeation preventive layer 190 is preferably a layer formed by applying a moisture permeation preventive paint and cured, or a layer formed by attaching a moisture permeation preventive film. Typical examples of the moisture permeation preventing paint include a fluororesin paint and a polyvinylidene chloride resin paint. When the moisture permeation preventive layer is formed by application of the moisture permeation preventive paint, two or more kinds of moisture permeation preventive paints may be applied to form a two-layer or three or more layers.

  Moisture permeation-preventing film-like body includes metal-coated film with anti-moisture performance, ceramic-coated film, composite coating film of metal and ceramic, metal tape, and the film itself made of resin with anti-moisture performance Examples thereof include a prevention resin film or a moisture permeation prevention resin-coated film. A moisture permeation-preventing film-like body obtained by laminating a butyl tape made of a butyl rubber adhesive and a metal tape such as an aluminum foil or a stainless steel foil can also be preferably used.

  Further, as shown in FIG. 1, since the spacer 128 has the space 140, the space 140 can be filled with a desiccant 138 such as zeolite or silica gel. With this desiccant 138, the gas in the divided hollow layer 130 can be dried. The desiccant 138 is exposed to the divided hollow layer 130 through an opening (not shown) formed in the inner surface 132 of the spacer 128.

  In the embodiment, since the support plate 200 is provided, the moisture permeation preventing layer 190 can be protected. The above is the configuration of the multiple glass shoji 120.

[Features of multiple glass shoji 120]
According to the multiple glass shoji 120 of the embodiment, the glass plate 122, the glass plate 124, at least one intermediate glass plate 126, and the support plate 200 attached to the outer surface side portion 134 of the spacer 128 are provided, Since the spacer 128 is reinforced by the support plate 200, the swelling of the spacer 128 due to the increase in the internal pressure of the divided hollow layer 130 can be suppressed.

  Moreover, according to the multiple glass shoji 120, the multiple glass shoji 120 assumed to be able to exhibit the heat insulation performance to the maximum, that is, the three intermediate glass plates 126A, 126B, 126C are spaced apart in the hollow layer. A support plate 200 was placed on the multiple glass shoji 120. Thereby, the swelling of the spacer 128 of the multiple glass shoji 120 which can exhibit heat insulation performance to the maximum can be suppressed.

  Furthermore, according to the multiple glass shoji 120, the support plate 200 is attached to the outer surface side portion 134 of the spacer 128 via the moisture permeation preventive layer 190. It is possible to prevent moisture from permeating into the film.

  The support plate 200 is housed in a space surrounded by the inner wall portion of the glass plate 122, the inner wall portion of the glass plate 124, and the outer surface side portion 134 of the spacer 128. Further, a sealant is provided between one outer wall portion of the support plate 200 and the inner wall portion of the glass plate 122 and between the other outer wall portion of the support plate 200 and the inner wall portion of the glass plate 124. The next sealing material 182 is filled.

  Thereby, according to the multiple glass shoji 120 of embodiment, the filling amount of the secondary sealing material 182 can be reduced. Further, the secondary sealing material 182 can be formed in an optimal shape by the support plate 200. Further, even if the total thickness of the multiple glass shoji 120 is changed, the secondary sealing material 182 can be set to a predetermined size by the support plate 200. Furthermore, since the outer wall portions on both sides of the support plate 200 are to be attached to the secondary sealing material 182, two-sided adhesion is achieved, and stable adhesion performance can be ensured. That is, the holding force of the secondary sealing material 182 can be expressed.

  Moreover, since the support plate 200 has a hollow structure having four hollow portions 202 therein, the rigidity of the support plate 200 can be increased. Furthermore, the heat insulation performance of the support plate 200 can also be improved by setting the size of the cross-sectional area of the hollow portion 202 so that air convection does not occur. Moreover, the heat insulation performance of the support plate 200 can be further enhanced by filling the hollow portion 202 with a heat insulating material.

[Other forms of multiple glass shoji]
In the multiple glass shoji 120A shown in FIG. 7, the support plate 200A is disposed at a position facing the outer surface side portion 134 of the spacer 128 and supporting the end surfaces of the glass plates 122 and 124. Between the spacer 128 and the support plate 200, a moisture permeation preventive layer 190 and a secondary sealant 182 are arranged from the spacer 128 side. The support plate 200 is interposed via the moisture permeation preventive layer 190 and the secondary sealant 182. Are attached to the outer surface side portion 134 of the spacer 128. The support plate 200A is provided with a hollow portion 202A.

  Even in the multiple glass shoji 120A, the support plate 200A can prevent the spacer 128 from bulging to the side opposite to the divided hollow layer 130. Further, according to the multiple glass shoji 120A, since the support plate 200A protrudes downward from the end surfaces of the glass plates 122 and 124, as a setting block for supporting the multiple glass shoji 120A on the lower frame of the window frame, The support plate 200A can also be used.

  In the multiple glass shovel 120B shown in FIG. 8, the support plate 200B is disposed at a position facing the outer surface side portion 134 of the spacer 128. In the example of FIG. 8, the support plate 200B is different from the support plate 200 of FIGS. 1 and 3, and the hollow portion 202 is not provided. That is, the support plate 200B is made of a homogeneous material as a whole. As in FIGS. 1 and 3, a secondary sealant 182 is provided as a sealant between the support plate 200 </ b> B and the glass plate 122, and between the support plate 200 </ b> B and the glass plate 124, and the spacer 128 and the support plate 200 </ b> B are provided. A moisture permeation preventing layer 190 is provided therebetween. The support plate 200 </ b> B can also prevent the spacer 128 from bulging to the side opposite to the divided hollow layer 130. When the support plate 200B is connected by a corner key, a hole is formed in the end surface of the support plate 200B, and the insertion portion of the corner key may be fitted into this hole.

  In the multiple glass shovel 120C shown in FIG. 9, the support plate 200C is arranged at a position facing the outer surface side portion 134 of the spacer 128. In the example of FIG. 9, the support plate 200C is different from the support plate 200 of FIGS. 1 and 3, and the hollow portion 202 is not provided. The support plate 200 </ b> C has an opening 204 having a substantially concave cross section that is opened in a direction opposite to the spacer 128. As in FIGS. 1 and 3, a secondary sealant 182 is provided as a sealant between the support plate 200 </ b> C and the glass plate 122, and between the support plate 200 </ b> C and the glass plate 124. A moisture permeation preventing layer 190 is provided therebetween. Even with this support plate 200 </ b> C, the spacer 128 can be prevented from bulging to the side opposite to the divided hollow layer 130. When the support plate 200C is connected by a corner key, the corner key insertion portion may be fitted to the opening portion 204 of the support plate 200C.

  In the multiple glass shovel 120D shown in FIG. 10, the support plate 200D is disposed at a position facing the outer surface side portion 134 of the spacer 128. In the example of FIG. 10, unlike the support plate 200 of FIGS. 1 and 3, the support plate 200 </ b> D protrudes downward from the end portions of the glass plates 122 and 124.

  On the other hand, like the support plate 200 of FIGS. 1 and 3, the support plate 200D is provided with a hollow portion 202D. Between the spacer 128 and the support plate 200D, the moisture permeation preventing layer 190 and the secondary sealant 182 are disposed from the spacer 128 side. This support plate 200 </ b> D can also prevent the spacer 128 from bulging to the side opposite to the divided hollow layer 130. Furthermore, since the support plate 200D protrudes downward from the end portions of the glass plates 122 and 124, the support plate 200 can also be used as a setting block.

According to the multiple glass shoji of the present invention, it is possible to suppress the swelling of the first frame due to the increase in the internal pressure of the hollow layer.
The entire contents of the specification, claims, drawings and abstract of Japanese Patent Application No. 2014-221619 filed on October 30, 2014 are incorporated herein by reference. .

  20 ... Window frame, 50 ... Push edge, 52 ... Airtight material, 100 ... Window, 110 ... Attachment frame, 120, 120A, 120B, 120C, 120D ... Multiple glass shoji, 122, 124 ... Glass plate, 126, 126A, 126B, 126C ... Intermediate glass plate, 128 ... Spacer, 130 ... Divided hollow layer, 132 ... Inner surface part, 134 ... Outer surface side part, 136 ... Side side part, 138 ... Drying agent, 140 ... Space part, 142 ... Groove part, 144 ... Glazing 150, corner key, 152, main body portion, 154, insertion portion, 156, through hole, 158, screw, 160, end face, 162, through hole, 166A, 166B, 166C, 166D, low radiation film, 180, seal Material, 182 ... secondary sealing material, 190 ... moisture permeation preventive layer, 200, 200A, 200B, 200C, 200D ... support plate, 2 2 ... hollow portion, 204 ... opening, 214 ... outer surface, 232 ... through hole, 250 ... corner key 252 ... main body, 254 ... insertion portion, 256 ... through hole, 258 ... bis.

Claims (6)

A first glass plate and a second glass plate are spaced apart by a first frame body to form a hollow layer, and the hollow layer is sealed to the first frame body at the periphery. And a multiple glass shoji in which at least one intermediate glass plate is held in the first frame body in the hollow layer,
A multiple glass shoji, comprising a second frame attached to an outer surface of the first frame opposite to the inner surface on the hollow layer side.   The multiple glass shoji according to claim 1, wherein the three intermediate glass plates are held on the first frame.   The multiple glass shoji according to claim 1 or 2, wherein the second frame is attached to an outer surface of the first frame via a moisture permeation preventive layer. The second frame is housed in a space surrounded by the inner wall of each of the first glass plate and the second glass plate and the outer surface of the first frame,
The width of the second frame is configured to be smaller than the width of the first frame, and the inside of each of the outer wall portion of the second frame, the first glass plate, and the second glass plate. The multiple glass shoji according to claim 1, 2 or 3, wherein a sealing material is filled between the wall portion. The space surrounded by the inner wall of each of the first glass plate and the second glass plate and the outer surface of the first frame is filled with a sealing material,
The multiple glass shoji according to claim 1 or 2, wherein the second frame body is attached to an outer surface of the first frame body via the sealing material.   The multiple glass shoji according to any one of claims 1 to 5, wherein the second frame is a hollow structure having a hollow portion.

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