JP3445189B2 - Joint - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a structure of a sealing pocket of an exterior panel joint. The sealing pocket is a portion of the joint where the sealing material is placed.

[0002]

2. Description of the Related Art In a conventional joint, as shown in FIGS. 6 and 7, a cross-sectional shape of a sealing pocket 55 formed by an exterior panel 51 is composed of a bottom surface portion 52 and a side surface portion 53 rising parallel to the bottom surface portion 52. Some of them (FIG. 6), some of which are composed of a bottom surface portion 52, a side surface portion 53 which rises in parallel from the bottom surface portion 52, and an inclined surface portion (chamfer) 54 which is continuous with the side surface portion 53 (FIG. 7).

As shown in FIG. 6, the shape of the sealing material 58 after the sealing is driven in the sealing pocket 55 and the spatula is pressed is shown in FIG. In general, the sealing material 58 has a tip extending to the upper end or the vicinity of the center of the beveled portion (chamfer) 54 as shown in FIG. 7, and the casting shape of the sealing is Y-shaped in the alphabet. Is.

In the former case, when the sealing material 58 is cast, shrinkage stress is intensively generated in the vicinity of the opening as shown in FIG. 9 during curing and shrinkage after the casting (concentrated portion 59) and the sealing material 58 and the exterior panel. Interface peeling from the adhered portion of 51 is likely to occur. Also, if the exterior panel is a lightweight cellular concrete panel, the adhesion of the panel and the sealing material is good,
Due to the nature of the material, when the shrinkage stress of the sealing material is concentrated near the interface, the exterior panel (adherend) 51 may be chipped.

In the latter case, since the sealing material tip 57 that has been cast is stamped on the slope 54 in a wedge-shaped cross section, the contraction stress is dispersed toward the center side (dispersion portion 60) as shown in FIG. Because of the contraction stress after casting, the slope 5
No interfacial peeling from 4 near the wedge-shaped tip 57 occurs. However, in both of them, the facing side surface portions 53 of the sealing pockets are parallel to each other, and the angle formed between the operator's line of sight and the side surface portion is small, so that the visibility when applying the sealing primer before placing the sealing material is not only bad. However, since the tip of the brush is hard to contact the side surface, the coating operation itself is difficult, and the primer coating tends to be incomplete.

Further, recently, exterior panels used for outer walls are required to have high designability (for example, a high-quality natural stone-like appearance or a continuous tiled appearance), and the panel surface is uneven or patterned. At first glance, natural stones and decorative joints are attached to make it look like a tile. Furthermore, FIG.
As shown in FIG. 5, an exterior panel that has been processed even up to the slope 54 of the joint has been adopted. If a defective portion 56 is formed as a result of such sloped surface processing, the sloped portion 54 does not have a straight line or a flat surface portion. Therefore, it is not necessary to use a spatula to form the sealing material 58 on the joint with good appearance. Not only is it difficult (something is impossible), but since the surface of the slope 54 is complicated or irregular, there is a problem that the spatula cannot be sufficiently pressed against the sealing material and sufficient pressure cannot be applied. As a result, there is a problem in waterproof performance.

That is, as described in the description of FIG. 7, even if the sealing pocket has a cross-sectional shape capable of driving the sealing material into a shape such that interfacial peeling does not occur near the tip of the sealing material, the slope portion is processed. If a defective portion is generated, the sealing material will not be satisfactorily laid in the end, resulting in a problem of waterproof performance.

[0008]

DISCLOSURE OF THE INVENTION The present invention provides a joint which can be used for an outer wall waterproof sealing system having excellent joint workability, construction reliability, durability, and designability of the joint of an exterior panel having high designability. It is in. Specifically, even in the exterior panel of high design property that has a defective portion on the surface and the slope portion, in applying the joint of the outer wall, the primer application is easy,
That is, it is possible to surely perform it, to improve the visibility after application, and to easily and surely (pressurize sufficiently) hold down the spatula when placing the sealing material. Yet another object is to provide a joint that can disperse the shrinkage stress of the sealing material after casting and can prevent interfacial peeling. In particular, lightweight cellular concrete panels have become of high quality in recent years and have become capable of complex surface processing, but the development of joints (shape of the panel edge) that can accommodate this has been delayed, and we are trying to solve this as well. To do.

[0009]

The present invention which has solved the above-mentioned problems is as follows. The cross-sectional shape of the joint sealing pocket 1 of the exterior panel 14 is the outlet from the bottom surface portion 2.
There is a side wall 9 that gradually opens to 3 and the outlet has a corner-shaped first sealing pocket 4, and a slight rising portion 16 that is parallel or slightly open to the front side from the outlet and has a slight rising portion 16 of the rising portion. The joint 6 has a terminal end 6 and a second sealing pocket 5 having an outward corner shape.

In this joint, the side surface portion of the first sealing pocket that gradually opens is a convex curved surface. The exterior panel is a joint whose surface is processed. Further, this exterior panel is a joint having a defective portion by processing the surface and a slope portion continuous with the surface.
Further, due to the presence of the defective portion, the exterior panel has a roughened natural stone-like surface or a joint with a decorative joint on the surface.

Examples of the exterior panel referred to in the present invention include lightweight cellular concrete panels, ceramic siding, metal siding, PC curtain wall, sash and the like. That is, the present invention provides a joint having a cross-sectional shape which can be easily driven by a spatula having a rounded tip while keeping the shape of the tip of the sealing material in a wedge shape regardless of the surface shape of the exterior panel. Is. In addition,
The present inventors have confirmed that if the tip of the sealing material in the joint is wedge-shaped so as not to cause the interfacial peeling, the shrinkage stress is not concentrated in the vicinity thereof.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a state in which a sealing material has been cast in the joint of the present invention, in which the surface and slope of the exterior panel are not processed. FIG. 2 is a view showing a defective portion generated by processing the surface and the slope portion in FIG. FIG. 3 is a perspective view of the case of FIG. 2 and shows the surface and slope of natural stone. FIG. 4 is a perspective view similar to FIG. 3, showing a state in which the surface of the exterior panel is provided with decorative joints and the surface and the slope are processed. FIG. 5 is a view showing a portion where the shrinkage stress of the cast sealing material is dispersed to the center side.

First, as shown in FIGS. 1 and 2, the sealing pocket 1 in the present embodiment has a side surface portion 9 that gradually opens in a convex curved surface from a bottom surface portion 2 to an outlet 3 and has an outlet 3
Is a first sealing pocket 4 that is in the shape of a corner,
From the outlet 3, there is a rising portion 16 which is a slightly parallel portion, and the terminal end 6 of the rising portion 16 has a second sealing pocket 5 having a projected corner shape. The second
The rising portion 16 of the sealing pocket 5 need not be parallel, that is, not perpendicular to the exterior panel surface, but may have a slight inclination (open toward the terminal end 6). If the rising portions 16 that are perpendicular to the exterior panel surface, that is, face each other, are parallel to each other, quality control during manufacturing of the exterior panel itself can be facilitated.

Since the sealing pocket 1 of the present invention has the rising portion 16 as described above, the end corner 6 can be provided with a projecting corner. The projecting corner in the cross section of the sealing pocket becomes a straight line in three dimensions, and it can be used as a guide for a spatula retainer when placing a sealing material. Further, since the sloped portion 7 can be formed from the projected corner 3 toward the surface, the sloped portion 7 can be largely inclined with respect to the surface of the exterior panel 14. As a result, the joint width 8 on the design can be reduced.

On the other hand, if the rising portion (second sealing pocket 5) 16 is not provided, the outlet 3 of the first sealing pocket 4 has a slope, particularly the side surface portion 9 thereof.
In the case of a curved surface, the slope of the sloped portion 7 must be made small in order to form a projecting corner, and as a result, the joint width 8 on the design becomes large and the designability of the outer wall surface deteriorates. . Since the present invention has the sealing pocket shape as described above, the driven sealing material tip 10 can be driven in a wedge-shaped cross section on the adhered portion, and the shrinkage stress after driving is as shown in FIG. Since it is dispersed to the center side (dispersion part 11), interfacial peeling does not occur near the tip 10. In particular, when the exterior panel is a lightweight cellular concrete panel, it is possible to completely prevent the lightweight cellular concrete panel itself from being damaged due to the adhesive force between the exterior panel and the sealing material.

When the side surface portion 9 of the first sealing pocket 4 is formed into a curved surface, the shrinkage stress is more dispersed. Further, the curved surface makes it possible to increase the adhesion area of the sealing material. Since the present invention has the sealing pocket shape as described above, the construction is extremely easy and reliable as follows. That is, according to the present invention, the primer is surely applied to the entire surface to be adhered of the sealing pocket with a brush before placing the sealing material, and after visually observing the applied state, a linear spatula is formed with a spatula having a round tip. This is extremely effective for a series of placing operations in which the sealing material is pushed into the sealing pocket 1 and is placed under pressure while using the (end 6 of the second sealing pocket 5) as a guide.

If a spatula with a rounded tip is used for casting the sealing material, the surface of the sealing material can be formed into a groove with a rounded shape, so that the cross section of the sealing material tip 10 becomes more wedge-shaped, and interface peeling is less likely to occur. It will be.
When the slope portion of the exterior panel is not processed, the tip of the sealing material may reach the slope portion.

[0018]

[Examples] The advantages of workability according to the present invention will be described below.
A concrete description will be made in comparison with the conventional example. The exterior panel used is a lightweight cellular concrete panel, 286 cm in height and 61 c in width.
m thickness 7.5 cm, the width of the second sealing pocket end 6 in FIG. 1 is 17 mm, and the design joint width 13 is 25 m.
m, the total depth of 20 mm was used.

Since the sealing pocket 1 of the present invention is gradually opened from the bottom surface portion 2 as described above, a thick brush (the thickness of the brush is approximately equal to the width of the end 6 of the sealing pocket) when the primer is applied. It was possible to apply a sufficient amount to the side surface portion 9 and the bottom surface portion 2 of the sealing pocket by reciprocating the above.

On the other hand, the conventional sealing pocket 5
When the primer is applied to No. 5, a sufficient amount cannot be applied unless the side portions of the sealing pocket are applied one by one, and a thin brush must be reciprocated at least 2-3 times. Workability was poor.

Since the sealing pocket 1 of the present invention is gradually opened from the bottom surface portion 2 as described above, when visually observing the inside of the sealing pocket after the application of the primer, a position slightly oblique from the front to the joint is located. Even from the above, it was easily confirmed that it was applied to both side surfaces of the sealing pocket 1.

On the other hand, the conventional sealing pocket 5
In No. 5, when the application status was confirmed, the application status could not be clearly confirmed on both sides when viewed from the front. To confirm the right side, the front was slightly from the left, and when the left side was confirmed, the front was slightly It was necessary to check from the right, and the visibility of the coating state was clearly inferior.

As described above, the sealing pocket 1 of the present invention has the parallel rising portions (second sealing pockets 5) and the terminal end 6 has the projecting corner, so that this forms a straight line at the panel end and sealant is formed. It serves as a guide when placing, the spatula operation is stable, and the sealing material can be pressed sufficiently, so the sealing material was properly filled up to the joint bottom. The surface of the sealing material was also beautifully finished in a round groove.

On the other hand, the conventional end shape shown in FIGS.
In the case of joints having a defective portion 12 or a tiled shape 13 having continuous irregularities on the exterior panel surface such as 4, there is no straight line or flat portion which guides the joints to the left and right, and the height from the joint bottom is irregular. Since the spatula was loose, the spatula rattled when the spatula was pressed down, sufficient pressure could not be applied, and the sealing material could not be properly filled up to the joint bottom. Further, the surface of the sealing material also had dirty irregularities due to the rattling of the spatula. It should be noted that it is premised that the defective portion is on the surface side of the slope portion. When the sealing material tip 10 extends to the sloped portion 7 when there is almost no defective portion, its performance and workability remain unchanged.

[0025]

The present invention can be applied to panels of any surface shape.
Applicable sealing pocket shape and waterproof outer wall
Workability, work reliability and durability as a sealing system
Is excellent. In particular, To the sealing pocket
Ease of applying the primer, Easy to see after applying
Well, It is easy to apply sufficient pressure when placing the sealing material
It has excellent workability and reliability. Also, C
After placing the ring material, disperse the contraction stress of the sealing,
Interface peeling is less likely to occur. Joint width is also the second sealing poke
It is possible to make it narrower because of the presence of the adhesive, and the design difference with the makeup joint is small.
The outer wall surface design of the comb can be improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which a sealing material is cast in a joint structure of an exterior panel of the present invention, and a state in which the surface and slope of the exterior panel are not processed.

FIG. 2 is a view showing a defective portion generated by processing the exterior panel surface and a slope portion in FIG.

FIG. 3 is a perspective view of the case of FIG. 2 showing a natural stone-like surface.

FIG. 4 is a perspective view showing a state in which the surface of the exterior panel is processed into a tiled shape similarly to FIG.

FIG. 5 is a diagram showing a portion where the shrinkage stress of the sealing material cast in the cross-sectional views of FIGS. 1 and 2 is dispersed to the center side.

FIG. 6 is a cross-sectional view showing a state in which a sealing material is cast in a conventional joint structure, showing a U-shaped sealing pocket.

FIG. 7 is a view showing that the tip of the sealing pocket extends to near the center of the slope portion in FIG.

FIG. 8 is a view not showing a defective portion generated by processing the exterior panel surface and the slope portion in FIG.

9 is a view showing a portion where the shrinkage stress of the sealing material cast in FIG. 6 is concentrated on the tip.

FIG. 10 is a view showing a portion in which the shrinkage stress of the sealing material cast in FIG. 7 is dispersed to the center side.

[Explanation of symbols]

1 sealing pocket 2 Bottom part 3 exit 4 First sealing pocket 5 Second sealing pocket 6 termination 7 slope 8 Joint width on design 9 Sides 10 Sealing material tip 11 Dispersion of contraction stress 12 Missing part 13 consecutive tiled shapes 14 Exterior panel 15 Sealant 16 Rising part 51 exterior panel 52 Bottom 53 Side part 54 Slope (Chamfer) 55 sealing pockets 56 missing part 57 Tip of sealing material 58 Sealant 59 Concentration part of contraction stress 60 Dispersion of shrinkage stress

Front page continuation (58) Fields surveyed (Int.Cl. ⁷ , DB name) E04F 13/08 E04B 1/682

Claims (3)

(57) [Claims] 1. A cross-sectional shape of a sealing pocket 1 of a joint of an exterior panel 14 , which has a side surface portion 9 that gradually opens from a bottom surface portion 2 to an outlet 3 and the outlet has an inward corner shape.
A second sealing pocket 4 having a sealing pocket 4 and a slight rising portion 16 that is parallel or slightly open to the front side from the outlet and the end 6 of the rising portion has an outward corner shape.
A joint having 5 and 5 . 2. The joint according to claim 1, wherein the gradually opening side surface portion 9 of the first sealing pocket 4 is a convex curved surface. 3. The joint according to claim 1, wherein there is a defective portion 12 on the surface of the exterior panel 14 and on the slope portion 7 continuous with the surface.