JP2526149B2 - Flat roof tile - Google Patents

Description

The present invention relates to a waterproof structure for flat roof tiles.

[Conventional technology]

Conventionally, an inorganic flat tile such as cement has been widely known as a roof tile.

This seed tile is raised above the roof ridge while overlapping a part of the flat plate part, and in the lateral direction parallel to the roof ridge, it is simply butted or fits within the plate thickness of the flat plate main body. , Are used so as to be arrayed via engaging step portions that are provided in a male-female relationship with each other and are provided in an uneven manner.

These flat roof tiles are used as a roof stacking means. Specifically, as shown in FIG. 5, the roof tiles A ... A are simply overlapped and the roof tile A front end is displayed as shown in FIG. The front sloping portion B is formed on the roof tile and the water repellent protrusions C formed on the rear end of the roof tile A are combined to make a roof, as shown in FIG. D is formed, and this is piled up on the rear edge surface of the roof tile A, and further, as shown in FIG. 8, a front hang B'which is bent along the surface of the lower tile A is formed at the front end of the roof tile. It is known that the roof tile is stacked on the trailing edge of the lower roof tile A surface.

[Problems of conventional technology]

By the way, in general, roof tiles are required to have a function of preventing rainwater that statically flows down along the surface from entering the attic, and also a function of preventing rainwater from entering the overlapping surfaces due to wind pressure of strong wind.

In this case, in the roof tile stacking structure of flat tiles shown in FIG. 5, since the overlapping surfaces A ′ of the upper and lower roof tiles A and A are in close contact with each other, it is necessary to prevent rainwater from entering due to the capillary phenomenon.
Compared with the construction method of FIGS. 7 and 8, it is necessary to increase the roofing overlap width L, and the ratio of the exposed surface is reduced. As a result, the material efficiency is deteriorated.

Further, in the roofing structure shown in FIG.
By the cooperation of the water repellent protrusion C, it is possible to prevent the infiltration of rainwater due to the blowing of rainwater and the infiltration of rainwater due to the capillary phenomenon.
Since there is only one so-called drainage space S, if the wind pressure exceeds a certain level, infiltration of rainwater due to wind pressure cannot be prevented,
In addition, at this time, since the rainwater staying in the drainage space S overflows at one time, there was a serious drawback that the rainwater intruded on the contrary.

Although the one shown in FIG. 7 has a plurality of draining spaces S ′ ... S ′, it can be said that the above-mentioned drawbacks shown in FIG. 6 are few.
If the wind pressure to each drainage space S'is high, the same problem occurs, and in particular, rainwater pushed in by the wind pressure tends to stay as it is, and there is a drawback that it cannot be discharged smoothly on a roof with a low slope.

The one shown in Fig. 8 exhibits a very good waterproofing function when there is no wind pressure, but if there is a small gap due to the warping of roof tiles, the step difference of the foundation when arranging the tiles, etc. It had the drawback of being almost ineffective.

[Problems to be Solved by the Invention]

In view of the above problems, the present invention has been made for the purpose of providing a flat roof tile that can effectively prevent not only rainwater permeation due to a capillary phenomenon but also rainwater permeation due to wind pressure even under considerable wind and rain. Is.

[Technology that has solved the problem]

That is, in the flat roof tile of the present invention, two or more concave grooves parallel to the rear end are formed on the trailing edge surface of the flat plate-shaped main body, and the concave grooves have the same inner bottom surface height but the bank wall. The groove is raised toward the trailing edge, and one end of the groove is opened to the widthwise thatching and overlapping engagement stepped surface formed at the side end of the flat plate-shaped body, and the engagement stepped surface has , A groove having a bottom lower than the bottom of the groove is provided toward the front edge of the flat plate-shaped body, and at the position corresponding to the groove on the back surface of the front edge of the flat plate-shaped body, It is characterized in that a ridge having a height that does not reach is formed.

〔Example〕

 Next, an embodiment of the present invention will be described.

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, FIG. 3 is a sectional view of an essential portion showing a state in which they are superposed, and FIG. FIG.

The flat roof tile 1 of the present invention has two or more concave grooves 3 and 3 (shown as 2 in the illustrated example) on the rear edge surface of the flat plate-shaped main body 1'parallel to the rear end 2.
The inner walls 3A of the grooves 3 and 3 have the same height, but the bank walls 4 and 4 are higher toward the rear end 2, and one end of each of the grooves 3 and 3 is a flat plate. Is formed at the side end 5 of the main body 1 ', and is opened to the surface of the widthwise thatching and overlapping engagement step portion 6,
On the surface of the engaging step portion 6, concave grooves 7, 7 having a bottom 7A lower than the concave groove bottom 3A are provided toward the front edge 8 of the flat plate-shaped main body 1 ', and the front edge of the flat plate-shaped main body 1'is provided. On the back surface, protrusions 9, 9 having a height not reaching the groove bottom 3A are formed at positions corresponding to the grooves 7, 7.

[Action]

When the flat roof tile 1 of the present invention is to be raised, as shown in FIG. 3, in the upper direction, on the upper opening concave grooves 3 and 3 at the rear edge of the flat plate main body 1, the ridges 9 on the rear surface of the front edge, 9 are overlapped with each other so as to be fitted to each other, and in the lateral direction, the engaging step portions 6 are lined up so as to be in mesh with each other.

At this time, as shown in FIG. 3, in the roof-overlapped portions of the roof tiles 1 and 1, the concave grooves 3 and 3 and the ridges 9 which are fitted vertically facing each other,
A drainage space S is formed by 9 ', and one end of the space S is opened to the engagement step portion 7 direction.

Therefore, even if a strong wind blows from the direction of the arrow P and rainwater blows from the front edge of the tile, the height of the bank walls 4, 4 partitioning the concave grooves 3, 3 is made higher toward the rear edge. The drainage space S prevents the rainwater from infiltrating due to the capillary phenomenon, and the rainwater only flows into the concave groove 3 and does not flow upward.

Moreover, since the drainage space S is opened in the engagement step direction, this portion does not serve as an opening and the pressure in the space S does not increase, and rainwater rise due to wind pressure is prevented.

In addition, the rainwater in the concave groove 3 is guided to the front edge direction of the roof tile along the groove 8 of the engaging step portion 7 and discharged to the surface of the lower roof tile, so that the rainwater does not get around to the back surface of the roof tile. Effectively prevented.

〔effect〕

As described above, according to the present invention, a so-called draining space is formed between the recessed groove and the ridge that are overlapped with each other, and the bank wall partitioning the recessed groove is raised toward the rear end of the roof tile, so that it is exposed to strong wind and rain. However, it is possible to almost certainly prevent the rainwater from overflowing to the rear end of the roof tile, and the inflowing rainwater is also discharged to the outside through the groove on the engaging step part communicating with the concave groove, so strong wind It is possible to almost surely prevent the rainwater from being blown in under the rain and to wrap around the back surface of the roof tiles. Further, since the overlapping allowance at the time of arranging the roof tiles can be reduced, there are various effects such as high material efficiency.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, and FIG. 2 is a plan view of FIG.
II-II sectional view, FIG. 3 is an essential sectional view showing a state in which they are superposed, FIG. 4 is an enlarged perspective view of an essential portion of a roof tile, and FIGS. 5 to 8 are explanatory sectional views of a conventional example. .

Claims (1)

(57) [Claims] 1. A flat plate-shaped main body having a rear edge surface parallel to the rear edge.
More than one concave groove is formed, the height of the inner bottom surface of the concave groove is the same, but the height of the concave wall increases toward the trailing edge, and one end of the concave groove is formed at the side end of the flat plate-shaped body. Is opened to the surface of the engaging step portion for thatching and stacking in the width direction, and on the surface of the engaging step portion,
A concave groove having a bottom lower than the concave groove bottom is provided toward the front edge of the flat plate-shaped main body, and reaches the concave groove bottom at a position corresponding to the concave groove on the back surface of the front edge of the flat plate-shaped main body. A flat roof tile characterized by being formed with protrusions having a height that does not exist.