JPS63181839A - Tile - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tile suitable for roofing a roof with a gentle slope, and more specifically, to a roof tile that reduces the phenomenon of back leakage of rainwater, This article relates to roof tiles suitable for gentle slope roof tiles, etc.

[Technical background of the invention]

In recent years, the slope of roofs has become gradually gentler due to changes in Japanese architectural styles, savings in construction materials, and other reasons, but there are few tiles with a gentle slope that can handle the phenomenon of back leakage of rainwater. Therefore, the present inventor first studied the mechanism by which backwater occurs in roof tiles, and formed a dripping part at the tip of the head with an inclined part that slopes downward in a straight line or in a reverse curved shape. (Refer to Utility Model Application No. 135862/1982) ■ A tile with a water return part formed at the bottom, with the height of the water return part being the same as or higher than the height of the tip of the head of the tile. proposed a roof tile (see Utility Application No. 102859/1983).

These roof tiles also solve the problems that conventional tiles had.
When the roof slope is gentle, the water flow on the surface of the tile flows in a laminar state, and the water flow falls along the end face of the drip part at right angles or nearly right angles to the lower tile surface, and on the tile surface, The water flow is pushed forward according to the falling speed, and the falling speed of the water stream increases, and when the falling flow rate increases, even if the tile has a sufficient slope, the water flow on the inside (upward) side of the tile The diversion component becomes strong and large and begins to rise upwards on the surface of the lower tile, causing the water level to rise and causing backwater.Finally, the diversion component reaches the water return part formed at the bottom of the tile. We were able to solve the problem of overflowing and causing a reverse leakage phenomenon.

In other words, in the former type of tile, the water flow on the tile surface is accelerated by the dripping part that is formed at the tip of the head and has an inclined part that slopes in a straight line or an inverted curved shape. It is guided toward the front side of the lower tile without falling directly onto the lower tile along the angle, reducing the division of flow between the inside and outside (downward) of the tile. ,
When the water flow is strong, the ejector effect pushes the water flow further forward to prevent water from flowing back into the roof tiles, thereby preventing rainwater from leaking back.

In addition, when the latter tile flows downward from the tip of the head of the tile, the kinetic energy is divided into downward and upward directions, and the kinetic energy in the upward direction flows downward from the tip of the head of the tile installed above. Potential energy is converted into potential energy in the space between the water return part of the tile roofed on the side, and the water level rises within this space, but the height of the water return part is equal to the height of the tip of the head of the tile. Since it is formed in a high relationship, it acts so that the potential energy does not become higher than the initial potential energy, and it is possible to prevent the back leakage phenomenon of rainwater.

However, in the case of the above-mentioned tile, referring to Fig. 9, ■ If the gap length X at the bottom of the butt is increased, the rear end of the dripping part of the tile located on the upper side and the tile located on the lower side will become different. The interval δ created by this decreases, and backflow of water due to capillary action is likely to occur.

■ When the head tip length y is increased, the ejector effect decreases and backflow is likely to occur.

There are other problems.

Therefore, regarding the above-mentioned points, the present inventor conducted further test and research, and found that the conventional method for preventing reverse leakage was to deal with tiles located particularly on the upper side of the roof, but on the lower side. It was discovered that if the space length X at the bottom of the roof tiles could be increased by applying a method to tiles located at .

The present invention has been devised in view of the above-mentioned problems, and its purpose is to prevent the dripping part of the upper tile from having the same structure as the conventional tile. The object of the present invention is to provide a roof tile that can prevent back leakage of rainwater.

[Means and effects for achieving the object] The tile of the present invention as a means for achieving the above object has, on the surface of the valley part of the tile, an inclined part that slopes downward from the bottom side to the head side, or A structure in which a step is formed, and at least a part of the slope or the step is formed at an arbitrary position facing the lower surface of the dripping part of the tile located above the tile while covered with tiles. .

Here, in the above configuration, the starting end of the inclined portion or step is formed to be located at any location within the range from the lower edge of the dripping portion of the upper tile to the center of the lower surface.

The tile of the present invention based on the above configuration is capable of absorbing rainwater flowing down from the tip of the tile head of the upper tile to the tile surface while the tile is being covered, and the kinetic energy of the rainwater is divided into downward energy and upward energy. The kinetic energy in the upward direction is reduced by a certain slope or step corresponding to the lower surface of the dripping part of the roof tile located on the upper side, and is reduced to 38 fi1.
The sloping parts or steps generate downward energy that flows down the front of the tile, preventing rainwater from leaking back.

As described above, the tile of the present invention has a sloped portion or a step at a location corresponding to the lower surface of the dripping tile on the upper side,
It is characterized by a structure that reduces the kinetic energy of running water in the upward direction, and it has a back leak prevention function on the valley surface of the tiles located on the bottom, not on the roof tiles located on the top. It is characterized by points.

〔Example〕

Hereinafter, tiles of embodiments embodying the present invention will be described with reference to the drawings.

Here, FIGS. 1 to 5 show examples of the present invention, and FIG. The figure is a perspective view,
Figure 3 is a sectional view taken along the line A-A in Figure 2, Figure 4 is a partially enlarged view of the roof covered with tiles, Figure 5 is an explanatory diagram for explaining the mechanism for preventing reverse leakage, and Figures 6- FIG. 8 is a sectional view showing another embodiment of the present invention.

The tile 11 of this embodiment has a head 12 at the front in the length direction, a local part 13 at the rear, a trough 14 at the center, an insert 15 on the right side in the width direction, and a crosspiece 16 on the left side. Insert 15 of head 12
Notches 17.1 are made on the side and the crosspiece 16 side of the local part 13, respectively.
It is a tile with 8.

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.

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

On the surface of the valley part 14, when the tiles are covered, there is a slope that slopes from the local part 13 side toward the head part 12 at a location corresponding to the lower surface 27' of the dripping part 20' of the upper tile 11' located on the upper side. A portion or step 28 is formed. The sloped portion or step 28 is the dripping portion 20 of the upper tile 11'.
A starting end 30 is provided at a location corresponding to the lower end edge 29'. However, at least a portion of the sloped portion or step 28 is the dripping portion 20′ of the upper tile 11′.
It may be located at a location corresponding to the lower surface 27' of.

The groove 26 is large enough to fit into the water return portion 24, and is slightly shallower than the length of the protruding portion 33.

Next, based on the above configuration, the operation of this embodiment will be explained with reference to FIG. 24 and the groove 26' of the upper tile 11'. It comes to a position corresponding to the sloped portion or step 28 formed in .

Then, water flows down from the tip of the dripping portion 20' formed at the tip 19' of the head 12' of the upper tile 11', collides with the surface of the tile roofed below, and When flowing downward from the tip, kinetic energy is divided into downward and upward directions. Further, the upward kinetic energy is reduced by the slope or step 28, and the downward energy is pushed forward by the slope or step 28, reducing the flow of running water into the tile and reducing reverse leakage. Acts to prevent phenomena from occurring.

Here, in order to confirm the effect of the tile of this example, we formed an inclined part in the trough corresponding to the lower surface of the dripping part of the tile located on the upper side with the tile of this example and the roofing state. When we conducted a comparison experiment with conventional roof tiles that were not installed, we found that although the conventional roof tiles were easy to install on a gentle slope, reverse leakage phenomenon was observed when there was a lot of water flowing through the roof, whereas the conventional roof tiles under the same conditions Regarding the roof tile of the example, no reverse leakage phenomenon was observed, similar to the two types of roof tiles previously proposed by the present inventors. Even better effects were observed when the roof was not laid on a gentle slope. In the configuration of this example, it was found that the tile local void length X can be increased without changing the size of the tile itself.

Incidentally, in the above-mentioned embodiments, the tile was explained as a crosspiece tile as shown in FIG. 2, but the tile of the present invention is not limited to tiles of this shape, and can be, for example, slate, French type tiles, etc. It is clear that German type roof tiles or the like may also be used.

Further, in the above-mentioned embodiments, an explanation has been given of a configuration in which a sloped portion is formed on the surface of the valley portion of the tile, but it is clear that the sloped portion may be formed as a step as shown in FIG. 6. In addition, the starting end of the sloped portion is formed so as to be located in the valley of the upper tile (in the case where there is a thinned out portion, the thinned out portion, etc.) as shown in FIG. 7 (a) (see Figure 7), the lower surface of the drip part of the tile located on the upper side has a two-tiered structure, and the lower surface of the drip part is located at the local side of the lower surface. It is clear that such a configuration (see FIG. 8) may also be used.

It should be noted that the present invention is not limited to the above-described embodiments, but includes modifications that can be made without departing from the gist of the present invention.

〔Effect of the invention〕

As is clear from the above description, according to the tile of the present invention,
Since the running water flowing down from the dripping part of the roof tile located on the upper side is pushed forward by the slope or step formed at the position corresponding to the lower surface of the dripping part, even if the slope of the roof is gentle, the upward direction of the running water can be prevented. It has the effect of reducing the backflow of energy into the tile and preventing backflow of running water.

Further, according to the tile of the present invention, since the slope is determined by the slope portion or the step difference on the surface of the valley, it has the effect that the roof slope can be made gentler.

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

[BRIEF DESCRIPTION OF THE DRAWINGS] Figures 1 to 5 show embodiments of the present invention.
The figure is a perspective view, Figure 3 is a sectional view taken along the line A-A in Figure 2, Figure 4 is a partially enlarged view of the roof covered with tiles, and Figure 5 is an explanation to explain the mechanism that prevents the reverse leakage phenomenon. 6 to 8 are cross-sectional views showing other embodiments of the present invention, and FIG. 9 is an explanatory view of a conventional roof tile. 11... Tile, 11'... Tile located on the upper side, 12.
...head, 14...trough, 19...tip of head,
20... Water dripping part, 20'... Water dripping part of the tile located on the upper side, 24... Water return part, 25... Back side of the valley part, 27'... Tile located on the upper side Lower surface of dripping water, 28
...Slope or step, 30...Start of slope or step Patent applicant Kotokawa Kenzai Kogyo Co., Ltd. Agent Patent attorney Hiroshi Yoshimura Figure 4 Figure 7 (a) Figure 7 (b) ) Figure 8

Claims (2)

[Claims] (1) A sloping part or a step that slopes downward from the bottom side to the head side is formed on the surface of the valley part of the tile, and at least a part of the sloping part or the step is covered with a tile. A tile characterized in that the tile is formed at an arbitrary position opposite to the lower surface of the dripping part of the tile located on the upper side. (2) The tile according to claim 1, wherein the starting end of the slope or step is formed at an appropriate location between the lower edge of the dripping part and the center of the lower surface of the upper tile.