JPS6134541B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is applicable to all types of roof tiles, regardless of their materials, such as ceramic tiles, cement tiles, or PBC tiles, or their shapes, such as Japanese or Western tiles. In particular, the present invention relates to the shape of a draining protrusion of a roof tile and a method of manufacturing the same.

Generally, roof tiles have drainage protrusions formed from the top side to one side to prevent rainwater from rising up and wetting the roof tiles.
As shown in FIG. 6, the draining protrusion 1' is constituted by a tapered surface 2 for use in removing from a mold during molding. Therefore, during wind and rain, the wind flows from the overlapped part of the upper tile to the upper surface of the tile and the draining protrusion 1' as shown by the arrow.
However, due to the influence of the wind along the tapered surface 2, the rainwater D rises up the tapered surface 2 of the draining protrusion 1', climbs over the protrusion 1', and flows into the field, as shown by the chain line. It had penetrated into the base plate.

Therefore, the present invention forms an inverted tapered surface with an overhang at the top on the inner surface of the draining protrusion that projects upward, so that when a roof is covered, the inverted tapered surface and the downwardly protruding draining The present invention provides a roof tile which is characterized by forming a void in which wind is deflected in a spiral shape between the inner surface of the draining protrusion and which eliminates the above-mentioned drawbacks. With at least the outside of the protrusion being held down by a mold, etc., the draining protrusion is again pressed from above using a pressing die, thereby forming the draining protrusion into a reverse tapered surface with an overhang, which can be easily applied using a simple device. Another object of the present invention is to provide a method for manufacturing a roof tile in which a drainage protrusion having an inverted tapered surface can be formed.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 3, the roof tile 5 has draining protrusions 1 formed on the upper side of its front surface 5a, that is, on the rear and right side, respectively, projecting upward, and on its back surface 5b. Draining protrusions 6 are formed on the lower side, that is, on the edge and left side, respectively, so as to protrude downward. Furthermore, reinforcing ribs 7 extending in the vertical direction are formed at predetermined intervals on the back surface 5b of the tile, and a portion of the reinforcing rib 7a at the center thereof is cut out.
The center is a flat surface 9 with knurling, and the notches of these reinforcing ribs 7a and the flat surface 9
Hanging bar 11 on which the bar 10 is hooked
It consists of In addition, the reinforcing rib 7 in the central portion
The rear part of a is cut off diagonally so as not to interfere with the roof board 12. In addition, two stabilizing claws 13, 13 on the left and right are provided at the rear end portion of the back surface 5b of the tile, and the stabilizing claws 13 are attached to the roofing board when roofing the tile.
2 to stably support the tile 5. Furthermore, a serrated uneven surface 15 is formed at the edge of the back surface 5a of the tile, that is, adjacent to the draining protrusion 6, and the uneven surface 15 prevents rainwater that is transmitted to the back surface of the tile and tries to rise due to surface tension or the like. cut off and let it fall. Similarly, an acute-angled protrusion 16 is adjacent to the protrusion 6 at the left end.
is formed. In the figure, 17 is a nail hole, and 19 is a conical hole that becomes larger on the back side.When necessary, it can be used as a nail hole by driving a nail or the like through the mark 19a engraved on the front side. be done. Furthermore, 20 and 21 are cutouts that are provided diagonally on the tile 5 and engage with each other when the tile is installed. In addition, the surface side of the left portion (flat portion) is notched to form a radius 21a, which prevents the corner from twisting up and breaking when a person steps on the tile 5. .

And, as detailed in FIGS. 4 and 5,
The draining projection 1 has an overhang 22 with the upper part of the inner surface protruding, and the inner surface as a whole has a tapered shape with a reverse tapered surface 23. Furthermore, an uneven surface 25 having an acute angle extending in the lateral direction is formed on the reverse tapered surface 23, and a groove 26 is formed on the upper surface of the protrusion 1 over its entire length. Furthermore, from the groove 26, roof tiles 5 are inserted at predetermined intervals.
A discharge groove 27 is formed toward the inside of the discharge groove 27, and reinforcing ribs 29 are provided on the inverted tapered surfaces 23 at the left and right portions of the discharge groove 27.

In Fig. 1, dotted line A indicates the lowest position of the tile 5 when roofing is done, chain line B indicates the overlapping part of the upper tiles, and chain line C indicates the overlap part of the tiles on the right side. It shows. Furthermore, when the roof tiles 5 are covered, as shown in FIGS. 3 and 2, there is a space between the inverse tapered surface 23 inside the draining projection 1 that projects upward and the draining projection 6 that projects downward. A predetermined gap S is formed.

This embodiment has the above configuration,
During wind and rain, the overlapped parts B and C of the tiles on the upper and right sides
From this, the wind infiltrates along the surface 5a of the roof tile 5, as shown by the arrow in FIG. Along with this, rainwater D also infiltrates into the gap S of the overlapping part, but the draining protrusion 1 has an inverted tapered surface 2 formed by an overhang 22.
3, the wind is intercepted by the reverse tapered surface 23 and deflected in a spiral shape in the gap S. Therefore, most of the wind passes through a place far away from the reverse tapered surface 23 and reaches the protrusion 1. It blows through from the top to the rear or side of the tile. As a result, rainwater that has entered with the wind,
The wind force that has been forced into a spiral shape and whose wind speed has weakened cannot move up the reverse tapered surface 23, and even if it moves up the reverse tapered surface 23, the surface of the rainwater D and the tile surface is blocked by the uneven surface 25. Even if the suction force due to elasticity etc. is cut off and the product falls, and even if it were to climb up the uneven surface 26, on the downward surface due to the overhang 22,
It fell due to the downward wind caused by the swirling wind,
Rainwater is prevented from climbing up the draining projection 1 and reaching the upper surface. Furthermore, even if rainwater infiltrates the upper surface of the draining protrusion 1 due to strong wind and rain or by running down the back surface 5b of overlapping tiles, the capillary phenomenon is cut off by the groove 26 and the groove Rainwater is stored in the drain 26, and the rainwater is further discharged downward from the drainage groove 27.

Next, a method for manufacturing the roof tile 5 will be explained based on FIGS. 7 to 9.

First, the soil is pressed to form the entire tile, similar to the conventional tile manufacturing method. At this time, the draining protrusion 1a is formed somewhat higher than before, and
The tapered surface 23a is formed as vertically as possible as long as it does not interfere with the press die cutting operation. Immediately after the shaping, that is, in the undried state of the wasteland, as shown in FIG. is pressed in the direction of the arrow to form a recess 25a having an uneven surface on the inner surface of the protrusion 1a. Immediately thereafter, as shown in FIG. 8, while pressing the outer surface of the rough land M placed on the receiving mold 30, the pressing mold 32 is pressed from above the draining projection 1a. Then, since the press die 32 has a tapered surface 32a that slopes downward toward the inside and a semicircular protrusion 32b, the upper part of the uneven surface 25a is turned inward as shown in FIG. The overhang 22 is formed by extrusion, and the recess 25a
The inversely tapered surface 23 is also compressed into the shape of a predetermined uneven surface 25, and a groove 26 is further formed above the protrusion 1. Thereafter, as in the conventional case, the roof tile 5 is transported to a dryer and the roof tile 5 is completed. Generally, to account for deformation due to shrinkage during drying, stamping is performed using a simple press in the state of rough ground M, and deformation is performed in the opposite direction.
It is convenient to form the draining protrusion using the press mold 32.

Further, as shown in FIG. 10, with the rough ground M placed on the receiving mold 30 with the outside pressed down, a patch plate 33 is further applied from the inside of the draining projection 1a, and in this state, the pressing mold 32' is pressed against the projection 1a. Press from above and push the upper part of the backing plate 33 inward to form the overhang 2.
2 may be formed.

In the above embodiment, the inverted tapered surface 23 was formed on both the draining projection 1 on the top side and one side, but this is different from forming the inverted tapered surface 23 on only one of the draining projections 1, for example, on the top side. Furthermore, a reverse tapered surface 23 is formed only in the vicinity of the lowest position A of the draining protrusion 1 on the upper side, that is, in the valley part, and the other parts, that is, the peak part and the flat part, are formed by forming a reverse tapered surface 23 from the conventional tapered surface 2. It may also be used as a draining protrusion. In addition, in this application, the reverse tapered surface 23 means
This does not simply mean a surface consisting of only an inclined surface having an inclination in the opposite direction to the conventional tapered surface 2 shown in FIG.
It means that it consists of a surface that includes a surface that intersects with a surface or an extension line of the surface, and therefore includes not only a straight surface but also a slope formed by a curved surface, and also includes an overhang as shown by the chain line in Figure 9. 22 also includes a bay-shaped slope that widens at the back. In addition, in FIG. 9, by moving the press mold 32 further downward, a curved reverse tapered surface can be easily obtained.

As explained above, according to the present invention, the reverse tapered surface 23 having the overhang 22 at the top is formed on the inner surface of the draining projection 1 projecting upward, so that when roof tiles are covered, the overlapped portion of the tiles is Since a gap S in which the wind is deflected in a spiral is formed between the reverse tapered surface 23 and the inner surface of the draining protrusion 6 projecting downward, the air can be prevented from blowing through along the inner surface of the protrusion 1. and prevent rainwater D from rising up the draining protrusion 1 even during wind and rain,
Rainwater can be prevented from entering through the roof tiles 5. This prevents early decay of the house due to rain leaks and wet roofing boards 12, and it is also possible to significantly reduce the overlapping portion of roof tiles compared to conventional methods. Since the number of tiles per unit area can be reduced, the cost of roof construction can be significantly reduced, and the weight of the roof can also be significantly reduced. It is also possible to achieve significant cost reductions. Furthermore, it consists of a reverse tapered surface 23 having an overhang 22 at the top,
Since the spiral wind flows downward on the downward facing surface of the overhang 22, the rainwater can be reliably dropped and the rainwater can be completely prevented from rising on the draining protrusion. Further, the outer surface of the draining protrusion 1a on the wasteland M is pressed against the receiving mold 30, and the male mold 31 is pressed against the inner surface thereof to form the recess 25a, or the inner surface is brought into contact with the patch plate 33. , by simply pressing the projection 1a from above with the press molds 32, 32', the upper part of the projection 1a is pushed inward to form an overhanging inverted tapered surface 23.
Therefore, by simply adding a simple device to a conventional roof tile manufacturing device, the draining protrusion 1 consisting of the inverted tapered surface 23 having an overhang can be manufactured very easily.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing the surface of a roof tile according to the present invention, Fig. 2 is a front view thereof, and Fig. 3 is a plan view showing the surface of a roof tile according to the present invention.
4 is a sectional view showing a draining protrusion of a roof tile according to the present invention, FIG. 5 is a plan view thereof, FIG. 6 is a sectional view showing a conventional draining protrusion, and FIGS. FIG. 9 is a sectional view showing the manufacturing method according to the present invention in different states, and FIG. 10 is a sectional view showing a partially modified embodiment. 1, 1a...Draining projection projecting upward, 5
... Roof tile, 6 ... Draining projection projecting downward, 22 ... Overhang, 23 ... Reverse tapered surface, 25a ... Recess, 30 ... Receiving mold, 31 ... Male mold, 32, 32' ... ...Press mold, 33...Packing plate,
M...Wasteland, S...Void area.

Claims (1)

[Scope of Claims] 1. A roof tile having a draining protrusion projecting upward from the upper side to one side on the front surface and a draining protrusion projecting downward from the lower side to the other side on the back surface, wherein An inverted tapered surface having an overhang at the top is formed on the inner surface of at least one side of the protruding draining protrusion, and when roof tiles are roofed, the inverted tapered surface and the downwardly protruding draining protrusion in the tile overlapping portion are formed. A roof tile characterized by forming a gap between the inner surface of the roof tile and the inner surface of the roof tile, through which wind is deflected in a spiral shape. 2. In a method for manufacturing a roof tile having draining protrusions, after the entire roof tile is formed by pressing, the outer surface of the draining protrusion of the rough roof tile is pressed with a mold, and the inner surface is Either by pressing the mold to form a recess, or by pressing from above with a pressing mold with a backing plate in contact with the inner surface of the mold,
A method for manufacturing a roof tile in which the inner surface of the protrusion is made into a reverse tapered surface having an overhang by pushing the upper part inward.