JPH0325143A - Waterproofing structure for flat tile - Google Patents

Abstract

PURPOSE:To prevent penetration of rainwater by a method wherein recessed grooves are formed in the back of the front edge of a plateform body, recessed grooves are formed in the surface of the rear edge of the body, and the recessed grooves are superposed with each other to form a drain space. CONSTITUTION:Recessed grooves 4 paralleling a front end 2A are formed in the back of a front edge 2 of a plateform body 1. Recessed grooves 4 ' each having an opening surface 4A positioned facing that of the respective recessed groove of the front end are superposed in a position where the recessed grooves are positioned opposite to the respective recessed grooves 4 when the bodies 1 are piled up in a state to be overlapped with each other. The recessed grooves are formed in the surface of a rear edge 5 of the body 1 to form a flat tile. In laying of the tiles, an upper flat tile is overlapped in a manner that a recessed grooves 4' are positioned facing the respective recessed grooves 4' and the tiles are laid in an upward direction. When strong wind is blown from the direction of an arrow mark P and rainwater is blown in through the front edge of the tile, the rainwater flows in a drain space formed with the recessed grooves 4 and 4' and is drained.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a waterproof structure for flat tiles. [Prior Art] Inorganic flat tiles made of cement, etc. have been widely known as roof tiles. This type of tile is raised above the roof ridge by overlapping a part of the flat plate part, and in the side direction parallel to the roof ridge, it is simply butted or placed within the thickness of the flat plate body. , are used so that they are arranged in a male-female relationship with each other via a concave-convex retaining step. Specifically, as shown in Fig. 5, there are methods for overlaying flat tiles, such as simply partially overlapping tiles A... As shown in Fig. 7, roofing is done by forming a front hanging part B at the front end of the tile A, and combining it with a water return projection C formed at the rear end of the tile A.
Forming multiple water-cut protrusions D...D on the back side of the front edge of tile A,
In addition, as shown in Fig. 8, a front hanging part B' is formed at the front end of the tile by folding it along the surface of the lower tile A. It is known that the trailing edge of the A surface is overlaid. [Problems with the prior art] By the way, tiles are generally required to have the function of preventing rainwater that statically flows down along the surface from entering the attic, as well as the function of preventing rainwater from entering from the overlapped surfaces due to the wind pressure of strong winds. required.

In this case, in the overlapping structure of flat tiles shown in Fig. 5, since the overlapping surfaces of the upper and lower tiles A and A are in close contact, it is necessary to prevent the infiltration of rainwater due to capillary phenomenon, so the overlap width is I7 needs to be at least 250am or higher,
This had the disadvantage that material efficiency deteriorated as a result of the ratio of exposed surfaces decreasing. In addition, in the layered roof structure shown in Figure 6,
The cooperation between the front sagging part B and the water return protrusion C can prevent the intrusion of rainwater due to blowing and the infiltration of rainwater due to capillary action, but since there is only one so-called drainage space S, if the wind pressure exceeds a certain level, It is not possible to prevent the infiltration of rainwater due to wind pressure, and in this case, the rainwater accumulated in the drainage space S will overflow at once, so there is a disadvantage that the adverse effects of rainwater infiltration are significant. The one shown in Fig. 7 has a plurality of drainage spaces S゛...S゛, so it can be said that the drawbacks shown in Fig. 6 mentioned above are few, but if the wind pressure on each drainage space S゛ increases, the same problem will occur. Problems arise, especially when rainwater pushed in by wind pressure tends to stay there and cannot be drained smoothly on low-slope roofs. The one shown in Figure 8 exhibits very good waterproofing ability when there is no wind pressure, but if there is even a slight gap due to warping of the tiles or differences in the level of the foundation when laying the roof, it may become waterproof due to rainwater blowing in. had the disadvantage that it was almost ineffective. [Problems to be Solved by the Invention] In view of the above-mentioned problems, the present invention provides a flat tile that can effectively prevent not only the penetration of rainwater due to capillary action, but also the penetration of rainwater due to wind pressure even under fairly strong winds and rain. This was done for the purpose of providing a waterproof structure. [Technology that has solved the problem] That is, the waterproof structure of the flat tile of the present invention has one or more grooves parallel to the front edge formed on the back surface of the front edge of the flat body. A groove with opening surfaces facing each other is formed on the rear edge surface of the main body at a position corresponding to the groove, and one end of the groove is formed on the side edge of the flat body. A recessed groove, which is opened to the surface of the engagement step and has a bottom lower than the bottom of the recessed groove, is provided on the surface of the engagement step toward the front edge of the flat plate-like main body. It is. [Example] Next, an example of the present invention will be described.

FIG. 1 is a plan view of an embodiment of the invention, FIG. 2 is a back view,
Fig. 3 is a cross-sectional view of the main part showing the overlapped state, and Fig. 4 is an enlarged perspective view of the main part of the tile. The waterproof structure of the flat tile of this invention has one or more grooves 4.4 (two grooves in the illustrated example) parallel to the front edge 2A on the front edge 2 back surface 3 (Fig. 2) of the flat plate body l. ) is formed on the rear edge 5 surface of the flat plate-like main body l as shown in FIG. 4
4°, 4' are formed, and one end 4B', 4' of this groove 4°4° is formed.
4B' is opened to the surface of a retaining step 7 for roof stacking in the width direction (arrow ．． A groove 8 having a bottom lower than 4° is provided toward the front edge 2 of the flat body l.

In the above embodiment, the groove 4'. 4″Other end 4C’.4
C' may be closed by the embankment wall 4D' as shown in the figure, or it may be a sloped bottom in which the groove bottom gradually becomes shallower toward the other end 4C''. Engagement stepped portion 7
The rear edge 5 of the flat body 1 shows a cut-off bank shaped at the rear end.
It is said to have a shape that extends at the same height.

Further, the above-mentioned flat tile 1 may be formed from a cement mixture or may be formed from a fired body of clay or the like.

[Effect]

When the flat tile 1 of the present invention is to be roofed, as shown in FIG. The concave grooves 4.4 are stacked so as to face each other, and in the lateral direction, they are lined up so that they interlock with each other at the engaging step portions 7. At this time, in the overlapped part of each tile 1.1, a drainage space S is formed by vertically opposing grooves 4 and 4°, as shown in FIG. 3, and one end of this space S is The section will be open in the 7 direction. Therefore, even if a strong wind blows from the direction of arrow P and rainwater blows in from the front edge of the tile, the rainwater will only flow into the groove 4 and will not flow upward. Moreover, since the draining space S is open toward the engagement step portion, this portion becomes an open opening, and the pressure in this space S does not increase, thereby preventing rainwater from rising due to wind pressure.

In addition, rainwater in the groove 4 is guided toward the front edge of the tile through the groove 8 of the engaging end 7 and drained onto the surface of the lower tile, preventing rainwater from flowing around the back surface of the tile. is effectively prevented. [Effects] As explained above, this invention is designed to form a so-called drainage space with grooves that overlap each other, and to drain rainwater from these grooves, so that rainwater does not blow in under strong winds and rain. It is possible to almost certainly prevent tiles from getting stuck together on the back side of tiles, and the amount of overlap when laying tiles can be reduced, resulting in good material efficiency. It has practical effects such as rainwater being drained through the grooves on the surface and a drainage space being formed, which together provide extremely good drainage performance.

[Brief explanation of drawings]

FIG. 1 is a plan view of an embodiment of the invention, FIG. 2 is a back view,
Fig. 3 is a cross-sectional view of the main parts showing the superimposed state, Fig. 4 is an enlarged perspective view of the main parts of the tiles, Figs. rrI pain 3'. Surface 4.4', 5 2 Concave I1 Pi j 7 2.1 No. ge part

Claims (1)

[Claims] (1) One or more grooves parallel to the front end are formed on the back surface of the front edge of the flat body, and an opening surface is formed on the rear edge surface of the flat body at a position corresponding to the grooves. A groove is formed in which the grooves face each other, one end of the groove is opened to the surface of the engagement step for width direction roofing formed on the side end of the flat main body, and the surface of the engagement step has a A waterproof structure for a flat tile, characterized in that a groove having a bottom lower than the bottom of the groove is provided toward the front edge of the flat body.