JPS6378953A - Connection structure of outer wall panel - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a joint structure of long exterior wall boards in which jointed joints are joined together via a soft molded sealant, and in particular, the present invention relates to a joint structure of long exterior wall boards in which jointed joints are joined to each other via a soft molded sealant. Concerning a joint structure that expresses

[Conventional technology]

Considering the ease of construction on-site, long exterior wall boards for construction have joint-like joints on both edges in the width direction, and sealing material is provided at the joints to join the outside wall boards to each other. may be configured.

Exterior wall panels used in architecture are required to have a high degree of design because the exterior side attracts attention. In this case, the shape of the joints is an important point in terms of design.In conventional exterior wall materials, the outer and inner surfaces are made based on each requirement, so there is no diversity in design.

[Problem that the invention seeks to solve]

External wall board 1 that has been used conventionally (Figs. 11 to 13)
In Figure), joint shape designs such as German preliminary design (Figure 11), box joints (Figure 12), and open joints (Figure 13) are expressed on the joints on the front side, but on the other hand, the joints on the back side The joints are narrowly spaced in consideration of joint strength and watertightness, and do not express any particular design. In this case, it was decided from the beginning of manufacture that the front side of the exterior wall board 1 would be placed on the outdoor side and the back side would be placed on the indoor side and attached to the frame. This means that conventional exterior wall boards can only express designs with one type of joint cross-sectional shape.

Diversity is required in the architectural world these days, and exterior wall panels do not escape from this category. In order to meet such demands, it is necessary to manufacture and stock exterior wall panels with a wide variety of joint cross-sectional shapes. As a result, productivity of exterior wall panels in factories decreases and inventory management becomes more complicated.

The purpose of the invention is to eliminate the above-mentioned drawbacks of conventional structures.

[Means for solving problems]

The present invention focuses on the fact that extrusion-molded cement-based exterior wall boards are extremely easy to create a real structure, and also have equally beautiful smooth finished surfaces on the front and back surfaces.
At the time of molding, the joints on the front and back sides of the exterior wall boards are formed into different cross-sectional shapes, and at the construction site, the front and back sides of the exterior wall boards can be used separately for outdoor use. This solves the above problem.

〔Example〕

The present invention will now be described with reference to embodiments with reference to the accompanying drawings.

1 to 4 are cross-sectional views showing the joint structure of the outer wall board 1, respectively.
A male fruit part 2 is formed at one edge in the width direction of the outer wall board 1, and a female part 3 is formed at the bottom edge, and a soft molded sealant 4 is arranged between the two fruit parts 2 and 3 to seal the space between the outer wall boards 1. join.

In Fig. 1, the lower end of the female part 3 on the front side (left side of the figure) is formed at right angles to the front side of the outer wall board 1, and the upper end of the male part 2 is formed on an inclined surface tilting forward. and the back side (
The lower end of the female part 3 and the upper end of the male part 2 (on the right side of the figure) are formed at right angles to the back side of the outer wall board 1, respectively.
The joints on the front side express the design of a German siding, and the joints on the back side express the design of a box joint.

Therefore, if the front side of the exterior wall board 1 shown in Figure 1 is installed in a building for outdoor use, the German preliminary design can be seen at the joints from the outside (Figure 1), but the back side of the exterior wall board 1 shown in Figure 1 is When installed outdoors, the box joint design will be visible from the outside (Figure 2).

That is, two types of designs can be selectively expressed using one type of exterior wall board 1.

The lower end of the female part 3 on the front side of FIG. 3 is formed into an inclined surface tilting backwards with respect to the front side of the outer wall board 1, and the upper end part of the male part 2 is formed into an inclined surface tilting forward. , the joint part on the front side composed of double-headed slopes expresses the design of an open joint. The reverse side also features a German preliminary design.

The joints of the exterior wall board l in Figure 4 have a box joint design on the front side.
In addition, the design of open joints is expressed on the back side.

Therefore, as described in FIGS. 1 and 2, the exterior wall panels 1 shown in FIGS. 3 and 4 are
Two types of joints can be expressed on the outdoor side: open joints, German siding, box joints, and open joints.

As mentioned above, if the design of the joint part is emphasized and the width of the joint part is widened, the joint area between the two real parts 2 and 3 will inevitably become smaller compared to the conventional joint structure, and The installation stability of the molded sealant 4 is reduced. If this installation stability deteriorates, not only will the watertightness of the outer wall board deteriorate, but depending on how it is installed, the molded sealing material 4 will protrude from the joints, spoiling the aesthetic appearance. For this reason, in the present invention, consideration is given to preventing the molded sealing material 4 from moving in the joint area and actively improving watertightness even if the area of the contact area is small.

The structure of the sealing part of the present invention will be explained below with reference to FIGS. 5 to 10. The design of the joints of the exterior wall panels is the same as that shown in Figure 1.

In FIG. 5, a dovetail groove 3A is formed in the center of the female part 3 in the longitudinal direction of the outer wall board 1, while a dovetail strip 4A is formed in the center of the molded sealant 4 in the longitudinal direction, Since the dovetail strips 4A are engaged with the dovetail grooves 3A, the molded sealant 4 does not move after the outer wall panels 1 are joined.

In FIG. 6, a dovetail groove 2A is formed in the center of the male part 2, contrary to FIG. 5.

In FIG. 7, a dovetail section 4A is arranged closer to the indoor side in the width direction of the molded sealing material 4, and has a structure that effectively prevents rainwater from entering from the outdoor section.

In Fig. 8, the number of dovetail strips 4A is smaller than the number of dovetail grooves 3A, and the dovetail 'a3 is not used for engagement.
Since A acts as a gutter to catch and collect intruding water, watertightness is improved.

FIG. 9 shows an opening 5 in the molded sealant 4 facing the joint.
As in the structure shown in Fig. 8, it acts as a gutter to catch intruding water, and if the number 5 is made plural as shown in the figure, the watertightness is further improved.

Figure 10 shows a plurality of molded sealants 4 (in the case of the figure, two
In the case of strong wind and rain, even if rainwater enters through the molded sealant on the outdoor side, the influence of wind pressure is removed by the space 6 between the molded sealant, and the rainwater flows indoors. further intrusion is prevented.

The molded sealant mentioned above is made of natural rubber, urethane rubber,
Made of water-resistant and weather-resistant soft material such as soft PVC.

〔Effect of the invention〕

As described above, according to the present invention, the joints on the front and back sides of the exterior wall board are formed to have different cross-sectional shapes, so that the front and back sides of the exterior wall board can be used separately for installation at the construction site. Two types of outdoor surface designs can be obtained with one type of exterior wall board, making it extremely economical.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of the joint structure for external wall panels according to the present invention, FIG. 2 is a cross-sectional view showing the external wall panel shown in FIG. 1 used upside down, and FIGS. 3 and 4. 5 to 10 are cross-sectional views showing embodiments of the respective sides, Figures 5 to 10 are views showing modified forms of the sealing structure used in the present invention, and Figures 11 to 13 are cross-sectional views showing conventional external wall board joining structures, respectively. It is a diagram. Patent ratio 1 applicant Showa Denko Kenzai Co., Ltd. Patent application agent

Claims (1)

[Scope of Claims] 1. In an exterior wall board joining structure in which joint-like joints formed on both side edges of a long exterior wall board are joined to each other via a soft molded sealant, the front surface of the exterior wall board A joint structure for exterior wall boards characterized by having joints on the front and rear sides of the joints having different cross-sectional shapes. 2. The joint structure according to claim 1, wherein at least one dovetail groove is formed in the joint portion of the outer wall board, and a dovetail strip that engages with the dovetail groove is formed in the soft molded sealing material. . 3. The joining structure according to claim 2, wherein the number of the dovetail portions is smaller than the number of dovetail grooves. 4. The joint structure according to claim 1, wherein the soft molded sealing material is provided with an opening facing the joint portion. 5. The joining structure according to claim 1, wherein a plurality of the above-mentioned soft molded sealing materials are provided.