JPS5817060Y2 - sheet roof tiles - Google Patents

Description

[Detailed explanation of the idea] This invention relates to the improvement of plate-shaped roof tiles.

Buttons for plate-shaped roof tiles made of asbestos-cement boards or the like have a problem in that rainwater infiltrates through the overlapped portions of the roof tiles due to capillary action.

For this purpose, as shown in FIG. 1, several rows of triangular wave-shaped drainage grooves 2 are provided vertically on the surface of the roof tile portion S covered by the upper roof tile, and an upper row of triangular wave-shaped troughs 21 and a lower row of triangular wave-shaped troughs 21 are provided. It is known that the drain grooves 24 are connected to each other by a straight groove 24, and the valleys 21 of the triangular wave-shaped drain grooves 2a in the lowest row are connected to the drain grooves 3 extending toward the eaves.

In this roof tile, rainwater that has entered the overlapped portion due to capillary phenomenon is replenished by the triangular wave-shaped drainage groove 2.
This flows down into the valley 21 of the triangular wave-shaped drain groove 2 and is drained from the drainage groove 3.

However, with the above-mentioned roof tiles, during strong winds and rain, rainwater easily travels to the drainage ditch 3 and enters the triangular wave-shaped drainage ditch 2, causing a large amount of rainwater to accumulate in the overlapping part of the tiles. It's inconvenient.

During strong winds, the roof tile is subjected to a bending moment using the roof tile fixing nail as a support point due to the suction force applied to the surface of the roof tile. In this case, the acute angles of the triangular wave-shaped grooves 2... The valley 21 that is the part hits the mechanically weakest point.

Moreover, in the valley 21, which is the weakest point, four cut grooves intersect, and since the number of intersecting cut grooves is large, it can be said that the strength against the bending moment is low from this point as well.

In general, the above-mentioned grooves are generally press-formed, so the density in the thickness direction of the tile in the groove part and the part where the groove is not formed is different, so the strength distribution is different. It has the disadvantage that it is extremely difficult to obtain one with uniform strength.

In view of the above, this invention was made with the aim of providing a plate-shaped roof tile that has good drainage properties and excellent strength, and is covered with a roofing material above the plate-shaped roofing material. Several horizontal rows of triangular wave-shaped drain grooves are provided on the top and bottom of the surface, and the upper and lower rows are non-communicating with each other. It is characterized in that vertical grooves are provided at appropriate intervals.

Next, this invention will be explained using examples.

FIG. 2 is a plan view of the main part of an embodiment of this invention, and the plate-shaped roof tile A of this invention has a triangular wave shape in horizontal rows on the surface S covered with the upper roofing material (not shown). The drain groove 2 is
Moreover, the upper and lower rows are provided so as not to communicate with each other, and between the triangular wave-shaped drainage grooves 2 and 2 of the upper and lower rows,
The vertical grooves 4 are arranged at appropriate intervals so as not to communicate with the upper and lower triangular wave-shaped drainage grooves 2.

The plate-shaped roof tile according to the present invention has the above-mentioned configuration, and the upper and lower rows of drain grooves 2 are provided in a non-communicating manner, so that rainwater does not flow up along the roof tile surface under strong winds and rain. The rainwater is also dammed in stages by each of the drain grooves 2, and rainwater does not flow through the grooves 2 and infiltrate the overlapped portion of the roof tiles.

Vertical grooves 4 are provided at appropriate intervals between the twisted and draining grooves 2, so the presence of the vertical grooves 4 disperses the compressed density in the tile body, and improves overall performance. The strength of the tiles is balanced, and the triangular wave-shaped draining grooves 9 and 2
, it has various practical effects, such as being able to prevent rainwater from rising due to capillary action between the two.

[Brief explanation of the drawing]

FIG. 1 is a plan view of essential parts of a conventional example, and FIG. 2 is a plan view of essential parts of an embodiment of the present invention. A...Plate roof tile, 2...Triangular wave-shaped drainage groove, 4...Vertical gourd

Claims (1)

[Scope of utility model registration request] On the surface covered by the upper roofing material of the sheet roofing material, several horizontal rows of triangular wave-shaped drainage grooves are provided above and below, and the upper and lower rows are not in communication with each other, and between the upper and lower rows of triangular wave-shaped drainage grooves, A plate-shaped roof tile characterized in that vertical grooves are provided at appropriate intervals so as not to communicate with the triangular wave-shaped drainage grooves.