JPH0230840A - Roofing tile - Google Patents

Abstract

PURPOSE:To make it possible to prevent the phenomenon of an inverted leakage in the case of roofing on a gentle sloping roof by forming a water dropping section provided with an inclined section inclining downward to the tip of a head. CONSTITUTION:A water dropping section 20 provided with an inclined section 27 inclining downward is formed on the tip 19 of a head 12. When a roofing tile 11 having such a constitution is laid on a gentle sloping roof, a water current from the surface of the roofing tile 11 can be dropped to a position apart from the water dropping section 20. According to the existing of the inclined section 27, even if a pitch of a roof is low, the phenomenon of an inverted leakage at an overlapping section of the roofing tiles 11.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tile for roofing a roof with a gentle slope, and more specifically, the present invention relates to a tile for covering a roof with a gentle slope. This invention relates to roof tiles such as gentle slope tiles with reduced

[Conventional technology]

In recent years, the slope of roofs has become gradually gentler due to changes in Japanese architectural styles, savings in building materials, and other reasons. However, in the case of conventional tiles, if the slope of the roof is less than 22 degrees (4-inch slope in the industry), rainwater will leak back from the overlapping part of the tiles during wind and rain. The possibility of corrosion of roofing boards and other construction materials increases,
It has been pointed out that this may shorten the lifespan of buildings.

Therefore, in recent years, as a tile that can be used for roofs with a gentler slope, for example, a tile having a structure in which a plurality of horizontal grooves 36 are formed on the lower surface 35 of the tip 19 of the head 12, as shown in FIG. 6, has been used. It is being

This roof tile is designed so that pressure can be released from side to side by means of the horizontal grooves 36. In addition, the tile shown in FIG. 7 is also used as a gentle slope tile. The gentle slope tile has a water drop part 20 bent downward at the tip 19 of the head 12, and a water return part 23 at the end 21 of the local part 13. Rainwater is smoothly guided to the tiles below by the dripping part 20, and backwater is blocked by the water returning part, thereby making it possible to prevent the reverse leakage phenomenon.

However, in various reports, the above-mentioned tiles are usually 3 cm and 5 cm.
Backwater can be prevented on roofs with a slope of up to about 100 degrees, but if the roof slope is made gentler than 19 degrees (3 by 5 minutes slope), or in strong winds, back leakage due to backwater is likely to occur due to wind pressure, etc. There is a problem.

Therefore, tiles such as the one shown in Figure 8.9 have been devised and put into practical use today. This tile is an improved version of the tile shown in FIG. 7 described above, and the tile shown in FIG.
The local part 13 is slightly tilted upward, and a water return part 23 is formed at the end 21 of the local part 13, and a groove 2 is formed in the back surface 25 of the valley part 14.
6, the local part 13 is slightly tilted upward, and the water return part 23 is formed high, allowing rainwater to enter to a certain extent, and is 14 degrees (2 inch 5 minute slope). It is possible to prevent backwater up to a certain degree of slope.

In addition, the tile shown in FIG. 9 is different from the tile shown in FIG.
The groove 26 on the back surface 25 of No. 4 is removed. Since tiles with this configuration have a large space between the overlapping parts of the tiles, it is possible to prevent back leakage caused by backwater entering beyond the water return part 23 up to a gradient of about 2 dimensions.

Therefore, each of the tiles shown in Figure 8.9 above is a tile that can withstand use as a tile that can reduce the slope of the roof to about 11 degrees to 14 degrees (2 sun to 2 sun 5 minutes slope). It can be said.

[Problem that the invention seeks to solve]

However, even with the above tiles, the temperature is 11 degrees to 14 degrees (2 inches to 2 degrees).
It is possible to prevent reverse leakage only up to a roof slope of about 500 cm, and it cannot be said to fully satisfy today's architectural styles.

As a result of studying the mechanism by which backwater occurs in roof tiles, the inventors of the present invention learned the following.

In other words, when the roof slope is gentle as shown in Figure 1O, the water flow on the surface of the tile tends to flow in a laminar state, and the water flow is perpendicular or perpendicular to the surface of the tile below along the end face of the dripping part. The falling water stream is pushed forward on the surface of the tile below according to the falling speed.

If the falling speed of the water flow is fast and the falling flow rate is large, even if the tile has a sufficient slope, the branch component of the water flow on the inside (upward) side of the tile will be strong and large. As the water begins to rise upward on the surface of the tile below, the water level rises, causing backwater, and eventually the branched flow component exceeds the water return part formed locally on the tile, causing a back leak phenomenon. found.

This is especially true when the tip of the dripping portion is formed in a positive rounded shape, or when the height of the dripping portion is high, and when the falling speed of the water flow is high.

The present invention addresses the above points, solves the problems of conventional roof tiles, and prevents backwater at the head by preventing the water flow from colliding with the roof tiles at right angles. The object of the present invention is to provide a roof tile for gentle slopes with a reduced number of roof tiles.

[Means for solving problems]

In order to achieve the above object, the tile of the present invention has a configuration in which a dripping part is formed at the tip of the head with a sloped part that slopes downward in a straight line or in an inverted curved shape. .

Here, the above configuration includes a configuration in which a positive radiused portion is formed at the starting end of the sloped portion, and a configuration in which a tip surface portion having a gentler slope than the slope of the sloped portion is formed at the end of the sloped portion. May include.

[Effect]

Next, the function of the tile of the present invention will be explained based on the above configuration.The tile of the present invention is applicable to thick slate tiles, etc., and is used as a tile for roofing a roof with a gentle slope.

The water flow on the surface of the tile is accelerated by the water drip part with a straight or reverse curved slope formed at the tip of the head, and the water flow is accelerated downward along the angle of the tip of the water drop part. The water does not fall directly on the tile at right angles, but is guided downward toward the front of the tile, reducing the division of water to the inside and outside (downward) of the tile.In addition, when the water flow is strong, The ejector effect pushes the water further forward and prevents water from flowing back into the roof tiles.

〔Example〕

Hereinafter, the tiles of the present invention will be explained based on embodiments embodying the present invention with reference to the drawings.
Figure 3 shows an embodiment of the present invention, Figure 1 is a perspective view, Figure 2 is a sectional view taken along the line A-Avil in Figure 1, Figure 3 is a partially enlarged view of the roof covered with tiles, and Figure 4 is a book. Explanatory drawings for explaining the mechanism of the roof tile of the invention, FIGS. 5A to 5C are partially enlarged sectional views showing other embodiments of the invention. In addition, in each figure, the same reference numerals are attached to the same parts and members.

In FIG. 1, the tile 11 of this embodiment has a head 12 at the front in the length direction, a local part 13 at the rear, and a trough 14 at the center.
It is a crosspiece tile that has an insert 15 on the right side in the width direction, a crosspiece 16 on the left side, and has notches 17 and 18 on the insert 15 side of the head 12 and the crosspiece 16 side of the local part 13, respectively.

The distal end 19 of the head 12 is provided with a dripping part 20, the rear end 21 of the private part 13 and the right end 22 of the insert 15 are provided with return parts 23 and 24, respectively, and the trough 14 (
The back surface 25 of the roof tile is provided with a groove 26 that fits into the water return part 23.

The dripping portion 20 is configured to include a slope portion 27 that slopes downward in an inverted radius shape. That is, a positive radiused portion 28 is formed at the tip 19 of the head 12, and an inclined portion 27 is formed that slopes downward in a reverse radiused shape starting from the end of the positive radiused portion 28. , and a valley surface 1 at the end of the slope 27.
4, the tip surface portion 29 is formed in a substantially parallel state, and its terminal end is formed in a vertical surface 30.

Further, the front surface 31 and the back surface 32 of the tip surface portion 29 form a parallel state.

Here, the height hl of the inclined portion 27 and the height of the vertical surface 28,
Usually, the height h2 of the inclined portion 27 is substantially equal to the height h2 of the vertical surface 28. but,
The shape may be reversed, and the end of the tip surface portion 29 may be slightly raised upward.

The local part 13 has a structure that is slightly inclined upward toward the rear. The water return portions 23 and 24 formed at the rear end portion 21 are rib-shaped and serve to prevent rainwater from entering and to reinforce the strength of the roof tile 11 if it is thin.

The groove 26 is large enough to fit into the water return portion 23 and is slightly shallower than the length of the protruding portion 33 of the water return portion 23 .

Next, the operation of the present embodiment will be explained based on the above configuration and with reference to FIG. 4. First, the tile 11 is placed on the shedding board of the roof, and the water return part 2 of the tile 11 is placed below the eaves.
3 so that the groove 26 of the upper tile 11 fits into the groove 26 of the upper tile 11. Then, the dripping part 20 of the upper tile 11 and the valley part 14
A space 34 is formed by the back surface 25 of the roof tile 11 , the surface 26 of the roof tile 11 facing downward, and the water return section 23 .

A dripping portion 2 formed at the tip 19 of the head 12
The water flow that was flowing gently on the valley surface 14 of the tile 11 is accelerated by the slope 27 of the tile 11 and flows directly to the tile 11 in the downward direction.
It is guided forward by the tip surface portion 29 without falling at a right angle, and the tip surface portion 29 of the upper tile is projected downward from the end, and the angle is less than perpendicular to the surface 14 of the lower tile. This reduces the separation of the water flow to the inside side a and the outside side (downward) b of the tile 11, and when the water flow is strong, the ejector effect pushes the water further forward, leaving behind the inside a of the tile 11. It acts to prevent water from flowing back into the tank.

Here, in order to confirm the effect of the tiles of this example,
A comparison experiment with the conventional tile shown in Figure 9 revealed that in the case of the tile of this example, running water falls further away from the dripping part, in other words, further forward of the lower tile, causing damage to the roof. slope is 5
．． No reverse leakage phenomenon from the head was observed even if the slope was less than 5 degrees (1 inch slope), whereas with conventional tiles, running water fell near the girth at the dripping part, and in both cases the roof slope was 19 degrees ~ 1
A reverse leakage phenomenon was observed at a roof slope of 1 degree (a slope of 3 inches and 5 minutes to a slope of 2 inches), and even in the case shown in Fig. 9, a reverse leak phenomenon began to occur when the roof slope became less than 11 degrees (a slope of 2 inches).

In this embodiment, a crosspiece tile as shown in FIG. 1 has been described, but the tiles of the present invention are not limited to tiles of this shape, and include, for example, slate, French 9 tiles, German 9 tiles, etc. It is clear that it may be.

In addition, in the above-mentioned embodiments, the dripping part of the tile was explained as having a sloped part in an inverted round shape, but a case in which the sloped part is straight (see FIGS. 5a and b), tilt angle,
It is clear that a configuration in which two or more inclined portions with different inclined states are arranged in series may also be used. Alternatively, a configuration may be used in which a dripping part with an inclined part is formed on the back surface of the tile, which is a flat tile that does not have a so-called hidden part (see FIG. 5C).

Further, in the above-described embodiment, the dripping part of the tile is formed over the entire area of the tip of the head, but it is clear that a configuration in which it is formed only partially is also possible.

〔Effect of the invention〕

As is clear from the above description, according to the tile of the present invention,
The dripping part with the inclined part formed at the tip of the head pushes the water flowing in a laminar state on the surface of the tile to a position away from the dripping part, in other words, to the front of the lower tile. Furthermore, since the slope is formed at the sloped portion, even if the slope of the roof is gentle, it is possible to prevent back leakage caused by the shunt components at the overlapped portions of tiles.

Therefore, according to the present invention, it is possible to provide tiles such as roof tiles for gentle slopes that can be used on roofs with gentle slopes.

[Brief explanation of the drawing]

1 to 3 show embodiments of the present invention, and FIG. 1 is a perspective view;
Figure 2 is a cross-sectional view taken along the line A-A in Figure 1, Figure 3 is a partially enlarged view of the tiled roof, Figure 4 is an explanatory diagram for explaining the mechanism of the tile of the present invention, and Figure 5 a. , b, and c are partially enlarged cross-sectional views showing other embodiments of the present invention. Figs. 6 to 9 are partially enlarged views of the conventional roof tiles covered. Fig. 10 explains the mechanism of the conventional tiles. FIG. 11...Tile, 12...Head/14°°° Valley, 19
... Tip of the head, 2o... Water dripping part, 25...
Back side of valley, 27...Slope part, 2nd...Positive rounded part, 29...Tip surface part Patent applicant Kotokawa Kenzai Kogyo Co., Ltd. Agent Patent attorney Hiroshi Yoshimura Fumi No. 4 Figure 5 Figure 7

Claims (3)

[Claims] (1) A tile characterized in that a dripping part is formed at the tip of the head with a sloping part that slopes downward in a straight line or in an inverted curved shape. (2) The roof tile according to claim 1, wherein a positive radiused portion is formed at the starting end of the inclined portion. (3) The tile according to claim 1, wherein a tip surface portion having a gentler slope than the slope of the slope portion is formed at the end of the slope portion.