JPH0240666Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a joint structure for armor siding.

Conventionally, as shown in Fig. 1, the upper surface A 2 of the lower wall panel A 1 is connected to the upper surface A ₂ of the lower wall panel A ₁ as shown in Figure 1. , the lower back side of wall plate A ₁ located above
It is widely known that A ₃ is placed facing each other and partially overlapped and joined together.

This armored siding wall surface has good waterproof properties because water droplets flow down the wall surface in the forward direction as shown by arrow B, and is therefore suitable as a joint structure for wall panels on an exterior wall surface.

By the way, in the case of wall panels with the joint structure shown in Fig. 1, this is not a big problem if water droplets flow down naturally, but for example, as shown in Fig. 2, rainwater may be blown onto the wall by strong winds. and,
The air pressure at the stepped portion c formed by the overlap increases, and as a result, rainwater W flowing down from above is pooled at the stepped portion c as shown by diagonal lines, and furthermore, due to capillary action, the rainwater flows to the joint surface A. There was a problem that the water penetrated into _{the walls} and moistened the wall base D (Fig. 1).

In order to solve this problem, in the past, in order to increase the so-called water rising distance, the overlapping width F was increased, or the wall plates A ₁ and A ₂ that were joined as shown in Fig. 3 were wall board located above
A concave groove _A4 was formed on the back side _A3 of _A2 to prevent rainwater from entering due to capillary action.

However, with the former method of increasing the overlapping width F, the wall boards cannot be used economically;
Furthermore, even with the latter method of providing the groove _A4 , it is not possible to prevent rainwater W blown by wind and rain from accumulating at the step c, and this is not a fundamental solution to preventing rainwater intrusion. There was a drawback that I was told it shouldn't be.

In view of the above-mentioned drawbacks, the present invention has developed a joining structure for armored siding, which prevents rainwater from directly entering the joining surface of the wall boards and has very good waterproof properties, even if rainwater accumulates. A method of joining wallboards in which the upper surface of the lower wallboard faces the lower back surface of the upper wallboard, partially overlapping each other. In the structure, a groove is formed along the upper edge in a portion near the upper edge of the surface of the lower wall plate, and the lower end surface of the upper wall plate faces the groove. It is characterized by being arranged and joined.

This invention will be explained below using examples.

FIG. 4 shows a sectional view of an embodiment of this invention.

The joint structure of the armor siding wall board of this invention is composed of inorganic wall boards, and the lower wall board 1A
The upper surface 2 of the upper wall plate 1B faces the lower back surface 3 of the upper wall plate 1B, and is joined by partially overlapping each other. Wall board 1B along the upper edge and having a cross-sectional shape located at the upper position as shown in the figure.
A recessed groove 5 having a triangular cross-sectional shape forming the step 4 is formed on the lower end edge 3A side of the wall plate 1B, and the lower end surface 3B of the upper wall plate 1B is arranged and joined so as to face the recessed groove 5. It is configured.

In the above embodiment, the lower end surface 3B of the upper wall plate 1B is joined flush with the stepped portion 4 of the groove 5, but as shown in FIG. Lower edge 3A of upper wall plate 1B
It is most desirable to arrange the groove 5 at a position slightly overlapping with the groove 5.

Further, as shown in FIG. 6, the grooves 5 may be provided in multiple stages on the upper surface 2 of the wall plate 1A.

Further, the cross-sectional shape of the groove 5 can be arbitrarily selected such as a trapezoidal shape or a circular arc shape.

Since this idea is configured as described above, the wall plate 1
At the lower end surface 3B of the upper wall plate 1B at the joint surface of A and 1B, the groove 5 formed in the lower wall plate 1A surface allows the joint surface 10 to be substantially lower than the surface of the lower wall plate 1A. Therefore, even if rainwater is blown and collected on the overlapping step part 11 due to strong winds, the rainwater will mainly flow to the bottom 5' of the groove 5 along the diagonal line. As shown in the figure, it stays and becomes difficult to penetrate into the bonding surface 10.

Further, in the case of the embodiment shown in FIG. 5, in addition to the above-mentioned effect, water droplets flowing down along the surface of the upper wall plate 1B are dripped onto the surface of the lower wall plate 1A as shown by the chain line. Since the water flows down while avoiding the joint surface 10, the wall surface can be easily drained and has good waterproof properties.

Furthermore, when the grooves 5 are configured in multiple stages as shown in FIG. 6, the upper wall plate 1B can be overlapped with any of the grooves 5, and the width of the overlap can be arbitrarily selected. Therefore, it is convenient to select an economical overlap width depending on the area of the entire wall surface.

As explained above, this idea is constructed so that the overlapping surface of the armor siding is located at a substantial midpoint between the overlapping steps, so even if rainwater is blown onto the step, It is difficult for rainwater to enter the overlapped surfaces, so there is no need to increase the overlap width of the wall panels, and the effective area when joining the wall panels can be widened, making the wall panels more economical. Since it can be used simply by forming grooves on the surface of the wallboard, it can be easily and inexpensively implemented.Furthermore, when joining the wallboards, the grooves can be used to As a result of the overlapping stepped portions of the armor siding wall boards being visually emphasized, the joint surfaces become less noticeable, and this has various practical effects such as a good appearance.

[Brief explanation of the drawing]

Figure 1 is a sectional view of a conventional example, Figures 2 and 3 are enlarged sectional views of a conventional example, Figure 4 is a sectional view of an embodiment of this invention, and Figures 5 and 6 are other embodiments. FIG. 1A...Wallboard located at the lower level, 1B...Wallboard located at the upper level, 2...Top surface, 3...Lower back surface, 3A...Lower edge, 3B...Lower end surface, 4...Step part, 5... Concave groove.

Claims (1)

[Scope of utility model registration request] A joint structure of wall panels in which the upper surface of the lower wall panel faces the lower back surface of the upper wall panel, and the wall panels are joined by partially overlapping each other. An armor siding wall characterized in that a groove is formed along the upper edge in a portion near the upper edge of the surface, and the lower end surface of the upper wall plate is arranged and joined to face the groove. Board joint structure.