JP4264899B2 - Grazing channel, glass panel equipped with the glazing channel, and structure for attaching the glass panel to the sash - Google Patents

Description

  The present invention relates to a glazing channel attached to a peripheral portion of a glass panel constituting a window glass of a building, a glass panel to which the glazing channel is attached, and a sash of a glass panel to which the glass panel is attached via the glazing channel. This relates to the mounting structure.

  In order to attach the double glazing to the sash of the building, a glazing channel (also referred to as a grechant, an attachment or a bead material) is attached to the peripheral edge of the double glazing. Usually, this glazing channel has a substantially U-shaped cross section, and a drainage hole for draining water is provided on the bottom surface of the glazing channel attached to the lower side of the multilayer glass (see, for example, Patent Document 1). An inner soft part is formed on the inner side surface of the hard reinforcing material forming the attachment (glazing channel) described in Patent Document 1, so that the multi-layer glass does not contact the reinforcing material (hard part) of the attachment. A space is provided between the reinforcing material and the multilayer glass to prevent the end surface of the multilayer glass from being exposed to moisture for a long time when moisture enters, thereby preventing deterioration.

  However, it is not clear how large the gap of the attachment of Patent Document 1 is provided by the inner soft part and the above effect is exhibited. Usually, the height of the inner soft part is around 0.4 mm, and a sufficient gap is not formed. Therefore, before the moisture that has entered between the end surface of the multilayer glass and the attachment is discharged to the outside of the attachment, the multilayer glass There is a risk that the multi-layer glass end face will be exposed to moisture for a long time. The drainage drain holes are scattered in the longitudinal direction on the bottom surface of the attachment, and are usually formed with a pitch of about 50 mm and a diameter of about 8 mm. Therefore, moisture may remain between the drain holes, and this moisture deteriorates the sealing material (secondary seal) provided on the peripheral edge of the multilayer glass. In addition, even when such an attachment is attached to the peripheral edge of the laminated glass, moisture that has entered between the laminated glass and the attachment is difficult to be discharged, so that the interlayer film is exposed to moisture at the peripheral edge of the laminated glass for a long time. As a result, the laminated plate glass may peel off or the interlayer film may become cloudy.

  As described above, in the conventional glazing channel, there is a possibility that rainwater or condensed water stays regardless of the pitch of the drain holes. Further, even if the drain holes are continuously provided, water stays in portions other than the drain holes. This staying water promotes deterioration of the sealing portion of the multilayer glass, peels off the secondary seal, and lowers the durability of the multilayer glass. In order to suppress the deterioration of the sealing material, which is the cause of such a deterioration in the durability of the double-glazed glass, the water that has entered the glazing channel is drained quickly, and even if water remains due to surface tension, it dries quickly. It is necessary to reduce the influence on the sealing material. Such stagnant moisture in the glazing channel deteriorates not only the sealing material of the multilayer glass but also the interlayer film of the laminated glass.

JP-A-8-270331

  The present invention is based on the above prior art, suppresses the retention of moisture that has entered between the glass panel and the glazing channel, and quickly avoids the state in which moisture adheres to the glass panel end surface. An object of the present invention is to provide a glazing channel that reduces adverse effects, a glass panel on which the glazing channel is mounted, and a structure for attaching the glass panel to a sash through the glazing channel.

  In order to achieve the object, the invention of claim 1 is mounted on the bottom side of a glass panel formed by stacking a plurality of glass plates, is interposed between the sash and the glass panel, and faces the inner bottom surface of the sash. A bottom wall portion and side walls covering the peripheral edge of the glass panel along the longitudinal direction of the glass panel bottom on both sides of the bottom wall portion, and a plurality of water drains along the longitudinal direction of the bottom of the glass panel It is a glazing channel in which a hole is formed, and the side wall portion has a stepped portion for placing the glass panel end face, and the stepped portion is raised from the inner peripheral surface of the bottom wall portion to the glass panel side by a predetermined height. And the wettability of at least the inner peripheral surface of the bottom wall portion is a water contact angle of 110 ° or less, and the opening ratio of the drain hole to the bottom wall portion and the height from the inner peripheral surface of the bottom wall portion to the upper surface of the stepped portion are In the graph, the horizontal axis is the aperture ratio and the vertical axis is the height. , A point (90%, 2.5mm), B point (90%, 5.0mm), C point (25%, 5.0mm), and D point (45%, 2.5mm) A glazing channel characterized in that the value is within a range.

The invention of claim 2 is characterized in that, in the invention of claim 1, the drain holes are substantially rectangular, and the interval between adjacent drain holes is 3 to 20 mm.

A third aspect of the invention is characterized in that, in the first or second aspect of the invention, the glass panel is a double-layer glass or a laminated glass.

  According to a fourth aspect of the present invention, there is provided a glass panel having the glazing channel according to the first, second, or third aspect mounted on a bottom side.

According to a fifth aspect of the present invention, there is provided a glass panel sash mounting structure in which the glazing channel according to the first, second, or third aspect is attached to the bottom side of the glass panel, and the glass panel is attached to the sash through the glazing channel. provide.

  According to the invention of claim 1, since the surface wettability of at least the inner peripheral surface of the glazing channel bottom wall is a water contact angle of 110 ° or less, the water that has entered the bottom wall (inner peripheral surface) spreads. It becomes easier and the rising height of water due to surface tension becomes smaller. On the other hand, since the stepped portion on which the end surface of the lower side of the glass panel is placed is provided at a position raised to the glass panel side by a predetermined height from the inner peripheral surface of the bottom wall portion, it is difficult for water to adhere to the end surface of the glass panel. . At this time, since the space for raising is formed between the water staying on the bottom wall portion of the glazing channel and the glass panel end surface above it, the air permeability is good and the water on the bottom wall portion is quickly To dry. When the water contact angle exceeds 110 °, the surface tension increases, the water on the bottom wall portion becomes high and easily rises, and the water reaches the end face of the glass panel and tends to adhere. Such an appropriate range of the surface wettability characteristic of the bottom wall portion of the glazing channel is obtained by a drainage test in consideration of the distance from the glass panel end surface above the bottom wall portion.

  Similarly, according to the invention of claim 1, the opening ratio of the drain hole formed in the bottom wall portion of the glazing channel and the height from the inner peripheral surface of the bottom wall portion to the upper surface of the step portion (hereinafter simply referred to as the raised height). In order to determine the optimum region for actual use from the graph obtained by testing the drainage performance of the glazing channel, and to use the glazing channel of the opening ratio and raised height in that region, In addition, it is possible to obtain a glazing channel that has good drying properties, has a practically sufficient strength, and is easily fitted into the end of the glass panel.

  According to the invention of claim 2, in the glazing channel in which substantially rectangular drain holes are continuously formed, by setting the distance between the holes to 3 to 20 mm, sufficient drainage with sufficient strength is achieved. Is obtained. When the interval is smaller than 3 mm, the practical strength is insufficient and the fitting property to the glass panel is deteriorated, and when the interval is larger than 20 mm, the drainage is deteriorated.

  According to the invention of claim 3, when the glass panel is a multilayer glass, the deterioration of the sealing material is prevented, and when the glass panel is a laminated glass, the interlayer film is prevented from being deteriorated.

  According to the invention of claim 4, since the glazing channel having the function and effect of claim 1, 2, or 3 is provided, the retention of moisture that has entered between the glass panel and the glazing channel is suppressed, and the glass panel end face is provided. It is possible to quickly avoid the state where moisture adheres and reduce the adverse effect on the glass panel.

  According to invention of Claim 5, since the glass panel which has the effect of said Claim 4 is attached to a sash, the retention of the water | moisture content which permeated between the glass panel and the glazing channel was suppressed, and a water | moisture content is on the glass panel end surface. It is possible to quickly avoid the attached state and reduce adverse effects on the glass panel.

FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention. This embodiment shows a glazing channel at the bottom of a glass panel made of rectangular double glazing.
The multi-layer glass constituting the glass panel 1 is rectangular as a whole, and a glazing channel 3 is mounted on the bottom side thereof. The end of the glass panel 1 is fitted into the sash 2 through the glazing channel 3.

  The glass panel 1, which is a multilayer glass, is formed by adhering a spacer 9 between two plate glasses 8, 8 via a primary seal 6 and sealing the outside with a secondary seal 10. The spacer 9 is filled with a desiccant 11. A hole 12 is formed on the upper surface side of the spacer 9 facing the space between the glass plates 8 and 8.

  The glazing channel 3 is an extruded body of resin having a substantially U-shaped cross section, and includes a bottom wall portion 3a and side wall portions 3b on both sides thereof. The bottom wall portion 3a is supported in contact with an upper surface of a setting block 13 provided in the sash 2 at a predetermined interval along the bottom longitudinal direction (direction perpendicular to the drawing). The side wall part 3b has the fin part 4 which consists of soft resin in an upper edge part, and the main-body part 7 which consists of hard resin in the lower part. Further, a buffer member (not shown) made of a soft resin may be provided on the side of the main body 7 facing the glass panel 1 in order to avoid contact between the hard resin and the plate glass 8. A step portion 5 is formed in the lower portion of the main body portion 7. The soft receiving part 26 is provided on the level | step-difference part 5 of both sides, and the end surface of the plate glass 8 is mounted on it. The soft receiving portion 26 is made of the same soft resin as the fin portion 4, and is integrally formed by extrusion molding together with the main body portion 7 and the bottom wall portion 3a made of hard resin.

  The step portion 5 is formed at a position on the glass panel 1 side higher than the bottom wall portion 3a in FIG. Accordingly, the glass panel 1 is placed on the stepped portion 5 in the glazing channel 3 while being raised from the bottom wall portion 3a. This raised spacing (height from the inner peripheral surface of the bottom wall portion 3a to the upper surface of the soft receiving portion 26 on the step portion 5) is formed between the bottom wall portion 3a of the glazing channel 3 and the end surface of the glass panel 1. Therefore, when water enters the bottom wall portion 3a, the water can be prevented from reaching the end surface of the glass panel 1 and being attached thereto.

  In the bottom wall portion 3a, drain holes 15 are formed at predetermined intervals along the longitudinal direction of the bottom side of the glass panel 1. Water that has entered the glazing channel 3 through a gap formed between the fin portion 4 and the side surface of the glass panel 1 due to secular change, etc. flows out into the sash 2 through the drain hole 15 and is further provided in the sash 2. It is discharged to the outside through a discharge port (not shown).

FIG. 2 is a perspective view of the glazing channel 3 of FIG. 1 viewed from the lower surface side.
In this example, a substantially rectangular drain hole 15 is formed in the bottom wall portion 3 a of the glazing channel 3. A portion of the bottom wall 3a that forms a gap between the adjacent drain holes 15 and 15 forms a connecting portion 15a that connects the side wall portions 3b on both sides. Therefore, when the width of the connecting portion 15a (the interval between the drain holes) is short, the strength of the glazing channel 3 is lowered and the fitting property to the glass panel 1 is deteriorated. On the contrary, if the width of the connecting portion 15a becomes too large, the drainage performance is deteriorated. An appropriate distance between the drain holes is 3 to 20 mm. In addition, the width | variety (in FIG. 1, horizontal direction) of the drain hole 15 is not limited to the example of illustration, You may set large to the largest width | variety which can be drilled.

  In order to enhance the drainage function of the glazing channel 3, it is important to set an optimal height and an opening ratio of the drain hole 15 to the bottom of the glazing channel (bottom wall portion 3 a). Further, in the raised glazing channel structure, since the surface material of the glazing channel also affects drainage, it is necessary to set the optimum surface material of the glazing channel. Therefore, these optimum ranges were set by carrying out the following drainage evaluation test.

3 and 4 show a test apparatus. An acrylic plate 17 is installed for the purpose of confirming the drainage level at the location (step portion 5, see FIG. 1) where the original glass panel of the glazing channel 3 where the drainage test is performed. At the time of installation, the acrylic plate 17 and the glazing channel 3 are fixed via an adhesive 18, and a watertight seal 19 is filled in a gap between the acrylic plate 17 and the glazing channel 3 in order to further improve the airtightness. Here, the water contact angle characteristics of the end face of the glass panel (that is, the bottom surface of the sealing material in the case of multi-layer glass) are related to the retention of water. Silicone sealant has a water contact angle characteristic of 65 to 80 °, which is almost equivalent to the acrylic surface characteristic (water contact angle of about 75 °), and can reproduce the case where an actual double-layer glass is set. I think. The acrylic plate 17 has a length of 500 mm, a width of 12 to 23 mm, and a thickness of 5 mm.

In an actual use state where the glazing channel 3 is housed in the sash 2, the drain hole 15 is rarely blocked by the setting block 13 (FIG. 1). Therefore, in this drainage test, the drainage test is carried out in a state where the drainage holes 15 near both ends are intentionally blocked by an acrylic plate 20 with a setting block as shown in FIG. An acrylic plate 20 having a thickness (height) of 5 mm was used.

When the sample for drainage test is prepared, the drainage test sample is set in a horizontal container 21 and immersed in water until the state shown in FIG. Then drain the water. At this time, the water depth is lowered at about 1.5 mm / min via a drain pump (not shown) and the drain hose 25 so that the pressure to be discharged does not increase. The water retention area (area in contact with the acrylic part) from the time when the water that has entered the inside of the glazing channel 3 starts to flow out from the drain hole 15 is evaluated. Specifically, the test apparatus shown in FIGS. 3 and 4 was observed from above, and the water retention area seen in the area of the acrylic plate 17 was evaluated. FIG. 5 is an example. In this example, water does not stay in the position corresponding to the drain hole 15 of the glazing channel 3, but the water stays in a region where the drain hole 15 is blocked by the acrylic plate 20 or in the vicinity of the connecting portion 15a. Is slightly seen. The test environment is evaluated in a state where the test tank is held at 10 ° C. and water is applied to the bottom of the container 21 so as to suppress water evaporation.

For the quantitative evaluation of the drainage test, the ratio with the area (wet area) where the acrylic plate 17 is wet after elapse of a predetermined time after the test, based on the area when the acrylic plate 17 is completely wet, that is, the wet area Do it at a rate. In this evaluation, assuming rainwater or condensed water, a wetting area after 24 hours of 10% or less and a wetting area after 3 days of 3% or less is judged as a glazing channel with good drainage and drying properties. I will do it.

In the drainage evaluation test, the surface wettability of the inner peripheral surface of the bottom wall is a glazing channel having a water contact angle of 100 to 110 ° (the water contact angle varies within the same sample) (Example 1, Comparative Example 1). In addition, the surface of the glazing channel is deposited with Kanto loam dust dirt (1,7 kinds of powder for kanto loam dust JIS test), and the dirt adsorbs water. A glazing channel (Example 2 and Comparative Example 2) that reproduces a state of good wetting and spreading) is used. Originally, when the water contact angle is relatively high, such as 100 to 110 °, the adhesion work at the interface between the glazing channel and the water is small and the water rolling property is high, but the water contact angle is rather high in the horizontal plane. Easily in contact with the panel and the water drainage becomes worse by bonding (theoretical calculation values are shown in FIG. 6). Conversely, when the water contact angle of the glazing channel is low, the adhesion work at the interface between the glazing channel and water increases, but the wet spread property is high and contact with the glass panel is easily avoided. That is, the drainage performance of the raised glazing channel structure is considered to improve as the surface wettability is higher (the smaller the water contact angle is). This time, in order to show an example of the high glazing channel surface wettability, drainage evaluation was also performed on the glazing channel to which the above-mentioned dirt was adhered.

FIG. 6 shows the theoretical calculated values of the water contact angle on the surface of the glazing channel and the height of water droplets on the glass panel when water droplets having a width of 1 mm to 10 mm are dropped on the surface of the glazing channel. It can be seen that the greater the width of the water droplet, that is, the greater the width of the glazing channel (or the greater the width of the connecting portion 15a) and the higher the water contact angle on the surface of the glazing channel, the higher the water droplet height. Here, in order to avoid contact of water and a glass panel, the raising height beyond it is required. From this figure, it can be said that the drainage performance of the raised glazing channel structure is improved as the surface wettability is higher (the smaller the water contact angle is).

The individual test results are summarized in the following examples and comparative examples.
As a result of the drainage evaluation test, the raised glazing channel structure is superior in drainage compared to the prior art that is not raised. Further, in the raised glazing channel structure, particularly when the raised height is 2.5 to 5.0 mm and the distance between the drain holes is 20 mm or less, higher drainage and drying properties can be obtained. It is done. Here, the surface wetting property of the glazing channel needs to be 110 ° or less.

Further, when the opening ratio of the drain hole to the bottom of the glazing channel is set within the hatched range in FIG. 7, the drainage performance is improved. That is, FIG. 7 is a graph in which the horizontal axis indicates the glazing channel aperture ratio, and the vertical axis indicates the raised height. In this graph, when the coordinate position is shown as (aperture ratio, raised height), point A (90%, 2.5 mm), point B (90%, 5.0 mm), point C (25%, 5.0 mm) ), It was confirmed that the drainage was particularly good in the area surrounded by the straight line connecting the D points (45%, 2.5 mm).

Table 1 shows the drainage test results of the glazing channels having various raised heights and opening ratios of drain holes. Here, a glazing channel having a surface wettability characteristic of a water contact angle of 100 to 110 ° is used. In this table, the “specification” in the opening ratio of the drain hole is a value ignoring the area blocked by the setting block, and “includes SB” means that it is blocked by the setting block (acrylic plate 20 simulating the setting block). The values in consideration of the area to be peeled are shown (the same applies to Tables 2 to 4). The bottom width corresponds to w shown in FIG.

From this result, it is most effective to increase the raised height in order to suppress the wet area ratio, and in order to suppress the wet area ratio after 24 hours to 10% or less, the height is at least 2.5 mm or more. Need Below that, there is a high possibility that the retention of water between the glazing channel and the glass panel due to the surface tension of water becomes large. On the other hand, even when the raised height is 2.5 mm or more, when the opening rate of the drain hole is small (for example, when the raised height is 2.6 mm and the opening rate (specification) is 31%, In the case of 2.7 mm and an aperture ratio (specification) of 26%), the wet area ratio does not satisfy the above conditions. Therefore, the relationship between the raised height and the aperture ratio is important. That is, the larger the raised height, the more relaxed the requirement for the aperture ratio, and the smaller the raised height, the larger the aperture ratio needs to be set.

Similarly to Table 1, Table 2 shows the drainage test results of glazing channels having various raised heights and opening ratios of drain holes. Here, as described above, the surface wettability is a surface of a glazing channel having a water contact angle of 100 to 110 °. As a result, due to contamination, wetting spread of water on the glazing channel tends to be improved, and water retention between the glazing channel and the acrylic plate tends to be suppressed, and the wet area ratio immediately after the test is smaller than the condition of Example 1. It can be suppressed. That is, if the glazing channel structure is raised and the wettability of the surface of the glazing channel is high, the drainage performance is further improved.

Here, after 3 days, the drying was slower than in Example 1, but this was because the drying of the water droplets adhering to the acrylic plate was delayed, and this was caused by the contamination of the surface of the glazing channel. It is thought that it was influenced by the high relative humidity between the glazing channel and the acrylic plate because it contained water. If the material can obtain the same surface wettability without spraying dirt on the surface of the glazing channel, the drying after 24 hours is assumed to be the same as in Example 1.

Comparative Example 1

Table 3 shows the drainage test results of each drain hole shape and drain hole interval of a conventional glazing channel that is not raised (the height corresponding to the raised height is 0 or 4 mm). Here, a glazing channel having a surface wettability characteristic of a water contact angle of 100 to 110 ° is used. Locations without drain holes have poor drainage and slow drying due to the retention of water between the glazing channel and the glass panel due to the surface tension of the water. That is, the glass panel is highly likely to come into contact with water for a long time.

Comparative Example 2

As in Comparative Example 1, Table 4 shows the drainage test results of each drain hole shape and drain hole interval of a conventional glazing channel that is not raised. Here, the surface wettability is a surface of a glazing channel having a water contact angle of 100 to 110 °, and dirt is deposited on the surface. The tendency is the same as in Comparative Example 1.

From the results of the above drainage test, the present invention can further improve the drainage of the raised glazing channel structure, and the water that enters the glazing channel can be quickly drained, and when it stays, the drying is fast, It was confirmed that the long-term durability of the layer glass sealing material and the laminated glass interlayer film can be secured.

  The present invention can be applied to a glass panel made of double-glazed glass, and the sealing material can be protected. Moreover, it can apply to the glass panel which consists of laminated glass besides multilayer glass. When applied to laminated glass, the interlayer film is protected. The present invention can also be applied to a composite glass panel in which a double-layer glass and a laminated glass or a normal plate glass are combined.

Sectional drawing of embodiment of this invention. The perspective view seen from the lower side of the embodiment of FIG. The block diagram of a drainage test apparatus. The perspective view which looked at the testing apparatus of FIG. 3 from the lower side. FIG. 4 is an explanatory diagram of the shape of an acrylic plate used in the test apparatus of FIG. 3. The graph which shows the relationship between a water contact angle and water drop height. The graph of the test result which shows the relationship between the aperture ratio of a glazing channel, and raising height.

Explanation of symbols

1: glass panel, 2: sash, 3: glazing channel, 3a: bottom wall part, 3b: side wall part, 4: fin part, 5: step part, 6: primary seal, 7: body part,
8: plate glass, 9: spacer, 10: secondary seal, 11: desiccant, 12: hole, 13: setting block, 15: drain hole, 17: acrylic plate, 18: adhesive, 19: watertight seal, 20 : Acrylic plate, 21: Container, 25: Drain hose, 26: Soft receiving part.

Claims (5)

Mounted on the bottom of the glass panel formed by stacking multiple glass plates, interposed between the sash and the glass panel, facing the bottom of the sash, and the bottom of the glass panel on both sides of the bottom wall A glazing channel in which a plurality of drain holes are formed along the longitudinal direction of the bottom of the glass panel on the bottom wall,
The side wall portion has a stepped portion for placing the glass panel end surface, and the stepped portion is provided by raising a predetermined height from the inner peripheral surface of the bottom wall portion toward the glass panel, and at least the inner peripheral surface of the bottom wall portion is provided. The wettability is a water contact angle of 110 ° or less, and the opening ratio of the drain hole to the bottom wall and the height from the inner peripheral surface of the bottom wall to the upper surface of the stepped portion are the opening ratio on the horizontal axis and the vertical axis is high. In the graph, the points A (90%, 2.5 mm), B (90%, 5.0 mm), C (25%, 5.0 mm), and D (45%, 2.5 mm) A glazing channel having a value within a range surrounded by four points.   2. The glazing channel according to claim 1, wherein the drain holes are substantially rectangular, and an interval between adjacent drain holes is 3 to 20 mm.   The glazing channel according to claim 1, wherein the glass panel is a double-glazed glass or a laminated glass.   The glass panel which mounted | wore the bottom side with the glazing channel of Claim 1, 2, or 3. A structure for attaching a glass panel to a sash, wherein the glazing channel according to claim 1, 2 or 3 is attached to the bottom of the glass panel, and the glass panel is attached to the sash through the glazing channel.

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