JPH0799042B2 - tile - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof tile suitable for roofing on a gently sloping roof, and more particularly, for a roof tile, for example, a gently sloping roof tile in which the reverse leakage phenomenon from the head of rainwater is reduced. Regarding roof tiles suitable for roof tiles, etc.

[0002]

BACKGROUND OF THE INVENTION In recent years, the slope of the roof has gradually become gentle due to changes in the Japanese style of construction, reduction of construction materials, and other reasons. However, in the case of conventional roof tiles, if the roof has a gentle slope of less than 22 degrees (4 inch slope in the industry), the reverse leakage of rainwater from the overlapping portion of the roof tiles during wind and rain will occur. It has been pointed out that there is an increased possibility that it may accelerate the corrosion of building boards and other building materials and shorten the life of the building.

In view of such a point, the present inventor has investigated the mechanism of generating reverse water in the tile, and when the roof slope is gentle as shown in FIG. 8, the flowing water on the surface of the tile 11 is in a laminar state. It is easy to flow, and the running water drops along the end face of the water drop portion 20 at a right angle or near a right angle to the lower tile surface, and the dropped running water is on the surface of the lower tile 11.
It is pushed forward according to the falling speed. And, if the falling speed of the flowing water is high and the falling flowing water amount is large,
Even if the roof tile 11 has a sufficient gradient, the shunt component of the running water on the inner side (upward direction) of the roof tile 11 is strong, and the water level increases in order to start rising upward on the surface of the lower roof tile 11 '. It has been found that the reverse flow occurs, and finally the split flow component passes over the water return part 24 formed in the bottom part 13 of the roof tile 11 and exhibits a reverse leakage phenomenon.

By the way, the inventor of the present invention stands on the above-mentioned point and firstly provides "a water drop portion having a slope formed by a straight line formed at the tip of the head or a curved surface dented inward of the roof tile". The composition of the roof ”. In this roof tile, the water dripping part with the sloped part formed at the tip of the roof tile accelerates the running water on the surface of the roof tile, and also directly on the roof tile in the downward direction along the angle of the tip of the water dripping part. , It does not fall in a right angle state, it guides to the front side of the roof tiles in the downward direction to reduce the shunt flow to the inside of the roof tiles, and when the running water is strong, the ejector effect causes the running water to move forward. It has the advantage of being able to provide a gently sloping roof tile as it pushes in and prevents backwater into the roof tile.

However, even with the above-mentioned roof tile, a reverse leakage phenomenon may occur if the ejector effect is not sufficiently exerted. For example, as in the case of the conventional roof tile shown in FIG. 8, when the height x of the water return portion is lower than the thickness y of the water drop portion at the tip of the roof tile and the slope of the roof tile is gentle, the roof tile head When running water falls on the surface of the roof tile below the tip, a part of the running water generates a shunt component inward of the roof tile, and this shunt component causes a reverse leakage phenomenon beyond the water return part. There is. In addition, the thickness y of the water drop portion at the head end of the head 12 of the roof tile 11 in FIG.
Since it has a shape consisting of a vertical surface 30 continuous with
Depending on where the reference point of the thickness y is, the roof tile 11
When the energy of water is taken into consideration, the flowing water flows down along a single circle. Therefore, not the starting end 30 'of the vertical surface 30 but the starting end 35' of the single circular shaped portion 35, in other words, the tile 11
It becomes the surface of the valley portion 14.

Further, the roof tile 11 has a groove (meat stealing portion) on the back surface.
Since 26 is formed corresponding to the water return portion 24 of the roof tile 11 ', the same is true even if the height x of the water return portion 24 is formed high.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and the object of the present invention is that the tip of the roof of the tile does not expect an ejector effect. Even so, it is to provide a roof tile suitable as a roof tile for a gentle slope that can reduce the risk of a reverse leakage phenomenon.

[0008]

The roof tile of the present invention as a means for achieving the above object is a roof tile having a water drop portion on the head and a water repelling portion on the bottom portion, and the water drop portion is provided. The step is provided with a stepped portion, and in the cross-sectional view, the stepped portion is provided with a recessed portion that is recessed or bent inward with respect to the line segment that connects the step start end and the step end, and the center point of the recessed portion Alternatively, an angle α formed between the water flow accelerating portion and the roof trough portion formed between the bending point and the step start end, and running water formed between the recess center point or the bending point of the recess and the step end. The depression angle β formed by the sending portion and the flowing water speed increasing portion is a step formed at an obtuse angle, and a front edge front end surface is formed between the end of the step and the bottom edge of the water drop portion. And the height x of the water return portion and the thickness y of the front end face of the tip edge. Are formed in a relationship of x ≧ y.

Further, in the roof tile of the present invention, in the roof tile of the present invention, the intersection of the flowing water speed-increasing portion and the roof tile valley portion is formed in a curved surface projecting to the outside of the roof tile, and the recess is a curved surface. Shape, a V-shaped or U-shaped depression is formed at the tip of the valley of the head at one or more places,
At the location, the height y of the front end face of the tip edge of the water drop portion
And the height x of the water return portion can be set to have a relationship of x ≧ y.

[0010]

The tile of the present invention is applied to a thick slate tile or the like, and is used as a tile for roofing a roof with a gentle slope.
And, a running water which is formed by the hollow center point of the hollow portion or the bending point and the step starting end, which has a hollow portion which is recessed or bent inward of the roof tile with respect to the line segment connecting the step start end and the step end end Since the angle α formed by the speed increasing portion and the roof trough is formed to be an obtuse angle, the flow speed of the flowing water is accelerated by the flowing water speed increasing portion, and the center point or the bending point of the hollow portion and the step end point are formed. Since the depression angle β formed by the flowing water delivery portion formed between the flowing water acceleration portion and the flowing water acceleration portion is formed as an obtuse angle, the accelerated flowing water smoothly flows to the roof tile tip by the flowing water delivery portion. Since the tiles are guided and can be flown in front of the tiles located on the lower side in a roofed state, the flowing water can entrain the air in the tile overlapping section, and the tiles where the flowing water is located on the lower side. When flowing down to the surface of, It is possible to reduce branching toward the roof tile overlapping portion, reduce entry into the space formed by the roof tile overlapping portion, and prevent reverse leakage.

In addition, in the roof tile of the present invention, the water flowing down from the tip of the roof of the roof tile is divided into the outside direction and the inside direction of the roof tile, and the running water divided into the inside direction of the roof tile is roofed to the roof side. It collects in the space formed by the tip of the head of the head and the water repelling part of the roof tiles on the lower side.
In the cross-sectional view, a recessed portion that is recessed or bent inward of the roof tile is provided with respect to a line segment that connects the step start end and the step end, and the center point or the bend point of the recess and the step start end An angle α formed between the flowing water speed increasing portion and the roof tile trough, and a flowing water sending-out portion and the flowing water speed increasing portion formed between the recess center point or the bending point of the recessed portion and the step end. In the roof tile which is the step formed by the obtuse angle, the depression angle β formed by
As shown in FIG. 7, a front edge surface is formed between the end of the step and the bottom surface of the front edge of the water drop portion, and the height x of the water return portion and the thickness y of the front edge surface of the front edge are x ≧. Since they are formed in the relationship of y, the branched component is not accumulated in the space, and the reverse leakage phenomenon can be prevented.

On the other hand, as shown in FIG.
When the height x of the water return portion and the thickness y of the front end face of the tip edge are formed to have a relationship of x <y, the slope of the roof tile becomes too gentle, and therefore the slope of the roof itself for roofing the roof tile is increased. It is difficult to obtain a gently sloping roof.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. Here, FIG. 1 to FIG.
1 shows an embodiment of the present invention, FIG. 1 is a schematic configuration diagram for explaining the relationship between the tip of the head and the water return portion, FIG. 2 is a perspective view, and FIG.
2A-A line cross-sectional view, FIG. 4 is a partially enlarged view of a roof tile roofing state, FIG. 5 is an explanatory view for explaining a mechanism for preventing a reverse leakage phenomenon and the roof tile form, and FIGS. 6 shows another embodiment of the present invention, FIG. 6 is a perspective view, and FIG. 7 is a sectional view taken along line BB of FIG. The parts and members corresponding to those in the conventional example described above are designated by the same reference numerals.

1 to 4, the roof tile 11 of this embodiment has a head portion 12 at the front in the length direction, a hip portion 13 at the rear, and a valley portion 14 at the center, and is inserted rightward in the width direction. 15, a crosspiece 16 is provided on the left side, and the head portion 12 has an insertion portion 15 side and a hip portion 13
This is a roof tile having cutouts 17 and 18 on the side of the crosspiece 16 of FIG.

The tip portion 19 of the head portion 12 is provided with a water dripping portion 20, the rear end portion 21 of the hip portion 13 and the right end portion 22 of the insertion portion 15 are provided with water return portions 23 and 24, respectively. The back surface 25 of the valley portion 14 (roof) is provided with a groove 26 that fits into the water return portion 23. Here, the thickness (wall thickness) y of the front end face of the water drop portion 20 and the height (wall thickness) x of the water return portion 24 are formed in a relationship of x ≧ y.

That is, the thickness y of the front end surface of the tip end edge of the water drop portion 20 is formed to be slightly lower than the height x of the water return portion 23 formed in the bottom portion 13. Specifically, the roof tile width is 3
In a roof tile having a length of 37 mm and a length of 424 mm, the thickness y is 10 mm and the height x is 11 mm, and a height difference of 1 mm is formed.

A step D is formed on the water drop portion 20. As shown in FIG. 5b, the step D has a recess portion H that is recessed or bent inward of the roof tile with respect to a line segment G that connects the step start end E and the step end F as shown in FIG. The angle α formed by the flowing water speed increasing portion M formed of the inclined portion 27 formed by the depression H and the step start end E and the tile trough portion 14, and the flowing water delivery portion N and the flowing water increase formed by the depression H and the step end F. The depression angle β formed by the speed part M is formed by an obtuse step. The running water delivery portion N is configured as a front end surface portion 29 in a state substantially parallel to the valley surface 14, and the step end F and the front end edge of the back surface 32 of the front end surface portion 29 forming a part of the water drop portion 20. Is formed on the vertical surface 30. Further, the front surface 31 and the back surface 32 of the front end surface portion 29 are formed in parallel with each other, and the intersection portion 28 between the flowing water speed increasing portion M and the roof tile trough portion 14 is formed into a curved surface projecting to the outside of the roof tile to form a recess. The portion H is formed into a curved surface.

As shown in FIG. 3, the hip portion 13 is constructed so as to be tilted slightly upward in the backward direction. The water return portion 24 formed at the rear end portion 21 has a rib shape and serves to prevent rainwater from entering and to reinforce its strength when the roof tile 11 is thin. The groove 26 has a size that fits into the water return portion 24, and is formed to be slightly shallower than the length of the protruding portion 33 of the water return portion 24. The groove 26 is the water return section 2
The size is such that it fits into the water return portion 24, and it is formed to be slightly shallower than the length of the protruding portion 33 of the water return portion 24.

Next, the operation of the roof tile of this embodiment will be described with reference to FIG.
To explain with reference to a, first, on the roof plate,
The roof tile 11 is roofed so that the groove 26 of the roof tile 11 located above is fitted into the water return portion 24 of the roof tile 11 ′ located below the eaves tip. Then, the water dripping part 2 of the roof tile 11 located on the upper side
0, the back surface 25 of the valley portion 14, and the roof tile 11 'located on the lower side.
A space portion 34 is formed by the surface 14 and the water return portion 24.

Then, the roof tile 11 is moved by the flowing water accelerating portion M composed of the inclined portion 27 of the water dripping portion 20 of the tip portion 19 of the head portion 12.
The water flowing gently on the valley surface 14 is accelerated,
The end portion of the tip surface portion 29 of the roof tile located on the upper side is guided in the tile forward direction by the flowing water delivery portion N composed of the tip surface portion 29 without directly falling to the roof tile 11 located on the lower side in a right angle state. Since it further pops out and falls on the surface 14 of the roof tile located at the lower side at an angle smaller than a right angle, the flow water is prevented from being shunted to the inner side a of the roof tile 11, and the flow water is externally (downward). b, and when the flow velocity of the flowing water is high, the flowing water entrains the air in the space 33 of the overlapping portion between the roof tile 11 located on the upper side and the roof tile located on the lower side. You can prevent it from getting in. This is because the angle α formed by the flowing water speed increasing portion M formed of the inclined portion 27 formed by the depression H and the step start end E and the tile trough portion 14, and the flowing water delivery portion N formed by the depression H and the step end F.
The depression angle β formed between the water flow accelerating portion M and the water flow accelerating portion M is formed by forming the blunt portion in the water drop portion 20. For example, when the angles α and β are set to right angles, the velocity of the flowing water becomes slower due to the step, and as a result, the diversion component to the inside of the roof tile increases, the flowing amount of the space 33 increases, and the reverse leakage phenomenon occurs. I will let you.

In addition, it flows down from the tip of the roof tile,
The water is divided into the outer and inner directions of the roof tile, and the water flowing in the inner direction of the roof tile is collected in the space formed by the top end of the roof tile of the roof tile and the water return portion of the roof tile of the lower roof. Is the height x of the water repelling portion and the thickness y of the front end face of the tip edge of the roof tile
However, since the relationship of x ≧ y is formed, the shunt component is not accumulated in the space, so that the reverse leakage phenomenon can be prevented.

Here, in order to confirm the effect of the roof tile of the present embodiment, the roof tile of the present embodiment, the height y of the tip of the roof tile and the height x of the water return portion are formed in a relationship of x <y. As a result of a comparative experiment of roof tiles that have been generally used since then (referred to as a conventional example), the roof tiles of the conventional example tend to be gently sloping, but the reverse leakage phenomenon was observed when the amount of running water increased. On the other hand, the reverse leakage phenomenon was not observed for the roof tile of this example under the same conditions. A more excellent effect was observed when the slope was not thatched.

In this embodiment, the roof tile as shown in FIG. 2 has been described. However, the roof tile of the present invention is not limited to the roof tile of this shape. For example, a slate, a French tile, a German tile. Obviously, it may be a roof tile or the like. In addition, although the present embodiment has been described with a configuration in which the roof of the tile has a water dripping portion having an inclined portion that inclines downward in an inverted R shape, it is obvious that the tile may be a flat tile.

In the above-mentioned embodiment, the roof tile has a structure in which the thickness of the front end face of the tip edge of the water drop portion at the head end is made uniform, but as shown in FIGS. A V-shaped recess 37 is formed in the central portion 36 at the tip of the head of the roof tile, and the thickness y of the tip end front end face of the water drop portion at the tip of the roof tile 11 and the height x of the water return portion 24 May be formed in a relationship of x ≧ y (preferably a relationship of x> y). Further, the recess 37 may be formed in a plurality of positions at any position on the tip of the head,
Further, the groove is not limited to the V-shaped groove, but may be, for example, a U-shaped groove.

Further, in the above-mentioned embodiment, the roof tile is formed over the entire tip portion of the water drop portion, but it is clear that the roof tile may be formed partially. Incidentally, the present invention is not limited to the above-described embodiments, and includes those which can be modified within the scope of the present invention.

[0026]

As is apparent from the above description, according to the roof tile of the present invention, the running water drops at a right angle directly to the roof tile located on the lower side along the front end face of the tip edge of the water drop portion. It is possible to reduce the flow of the flowing water to the inner side of the roof tile by being blown toward the front side of the tile located on the lower side, and when the flowing speed of the flowing water is high, the inner portion of the water flow is However, since the flowing water entrains the air on the inner side of the overlapping space portion of the roof tile located on the upper side and the roof tile located on the lower side, the flowing water reduces the inflow to the overlapping space portion, It has the effect of preventing reverse water.

Further, according to the roof tile of the present invention, the thickness y of the front end face of the tip edge of the water drop portion at the tip of the head is equal to the height x of the water return portion for preventing reverse leakage of water, or Or, since it is formed low, the water return level does not exceed the water return section even if the ejector effect is not exhibited.
This has the effect of preventing the reverse leakage phenomenon. Therefore,
According to the present invention, there is an effect that it is possible to provide a roof tile such as a roof tile for a gentle slope that can be roofed on a roof with a gentle slope.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram illustrating an embodiment of the present invention and illustrating a relationship between a tip of a head and a water return portion.

FIG. 2 is a perspective view.

FIG. 3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a partially enlarged view of a state in which a roof tile is roofed.

FIG. 5 is an explanatory diagram for explaining a mechanism for preventing a reverse leakage phenomenon and a form of roof tiles.

FIG. 6 is a perspective view of another embodiment of the present invention.

FIG. 7 is a sectional view taken along line 6B-B of FIG.

FIG. 8 is an explanatory diagram for explaining a mechanism of a roof tile of a conventional example.

[Explanation of sign]

11 ... Roof tile, 12 ... Head, 14 ... Valley, 19
... Tip of head, 20 ... Water dripping part, 24 ...
Water return part, 25 ... Back surface of valley part, 27 ... Inclined part

Claims (4)

[Claims] 1. A roof tile having a water drip portion on its head and a water baffle portion on its buttocks is provided with a step, and the step has a step start end and a step end in cross-sectional view. An indentation portion is formed which is indented or bent inward of the roof tile with respect to a line segment connecting the two, and a water flow accelerating portion and a tiled valley portion formed between the center point or the bending point of the depression and the step start end. The angle α formed by the flowing water feed portion formed between the center point or the bending point of the hollow portion and the end of the step and the flowing water speed increasing portion are formed to be obtuse angles. A front edge surface is formed between the end of the step and the tip edge bottom surface of the water drop portion, and the height x of the water return portion and the thickness y of the tip edge front end surface are x.
A roof tile characterized by being formed in a relationship of ≧ y. 2. The intersection of the flowing water speed increasing portion and the tile trough is
The roof tile according to claim 1, wherein the roof tile is formed in a curved surface projecting outward from the roof tile. 3. The roof tile according to claim 1, wherein the recessed portion is formed into a curved surface. 4. A V-shaped or U-shaped depression is formed at the tip of the valley portion of the head at one or a plurality of locations, and at the location, the thickness y of the front end face of the tip edge of the water droop and the water repellent are formed. The roof tile according to claim 1, wherein the height x of the portion has a relationship of x ≧ y.