JPS5854497Y2 - sheet roof tiles - Google Patents

Description

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

Platy 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 reason, as shown in FIG. 1, sawtooth drainage grooves 1' are provided on the surface of the roof tile portion S covered by the upper roof tile,
It has been proposed to communicate a drainage groove 2' extending toward the eaves with a valley 11' facing the eaves of the sawtooth groove 1'.

In this roof tile, rainwater that has entered the overlapped part of the roof tiles by capillary action is captured by the sawtooth drain groove 1', flows down into the valley 11' of the sawtooth drain groove 1', and then flows into the drain groove 2. The water is drained from '.

However, in the above-mentioned roof tile, during strong winds and rain, rainwater easily flows through the drain groove 2' and enters into the serrated drain groove 1', and this infiltrated water easily rises in the drain groove 2'. Therefore, there is a concern that there is a large amount of water and that it easily overflows the sawtooth drain groove 1'.

The present invention can solve the above-mentioned difficulties by making the drainage grooves have a shape different from the sawtooth shape.

That is, in the plate-shaped roof tile according to the present invention, on the surface of the plate-shaped roofing material covered with the upper roofing material, a convex V-shaped groove on the ridge side is arranged in a horizontal row, and in the neighboring V-shaped grooves, The configuration is characterized in that one end of the F-shaped groove of one groove is communicated with and above the other end of the other groove, and the other end of the groove is connected with a drainage groove extending toward the eaves. .

The present invention will be explained below with reference to the drawings.

In FIG. 2, A is a plate-shaped roofing material made of an asbestos cement board, and S represents a portion covered by the upper roofing material.

1 indicates a drainage groove, and a convex C-shaped groove a, a...
... are arranged horizontally in a row, and in the F-shaped grooves adjacent to each other, one end of one groove is slightly longer than the other end C of the other groove.
It is connected upwards.

Therefore, the draining groove 1 has a diagonal groove part d that projects toward the eaves side.

2.2... is a drainage groove provided on the surface of the roofing material, extends toward the eaves, and its upper end communicates with the other diagonally protruding end C of the above-mentioned F-shaped groove. .

In the above, rainwater rising along the drainage ditch during strong winds and rain is caused by a large resistance to rising rainwater at the point where the upper end of the drainage ditch 2 communicates with the other diagonally protruding end C of the F-shaped groove array drainage groove a. Since there is a curved part, it is difficult to enter the drain groove 1.

Therefore, it is possible to effectively prevent a large amount of rainwater from entering the drain groove 1 during strong winds and rain, and it is possible to satisfactorily reduce the overflow of this infiltrated rainwater from the drain groove 1.

The plate-shaped roof tile according to the present invention is different from the plate-shaped roof tile shown in Fig. 1 in that the shape of the serrated drainage groove is modified to reduce the infiltration of rainwater from the drainage groove into the drainage groove under strong winds. With this structure, it is possible to effectively deal with not only rainwater that enters due to capillary phenomenon, but also rainwater that enters under strong winds.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a conventional plate-shaped roof tile, and FIG. 2 is an explanatory diagram showing a plate-shaped roof tile according to the present invention. In the figure, A is a plate-shaped roofing material, a, a... is a F-shaped groove, b is one end of the F-shaped groove, C is the other end of the F-shaped groove, 2゜2
... is a drainage ditch.

Claims (1)

[Scope of utility model registration request] On the surface of the sheet roofing material covered by the upper roofing material, convex V-shaped grooves are arranged horizontally on the ridge side, and in the adjacent V-shaped grooves, one end of one groove is connected to the other side. A plate-shaped roof tile characterized in that the other end of the groove is connected slightly upwardly, and the other end of the groove is connected with a drainage groove that extends toward the eaves.