JP3043544U - Flat roof tile - Google Patents

Abstract

(57) [Abstract] [Problem] It is difficult to break even if it is thin, and rainwater is efficiently drained off. SOLUTION: In the lower half area of the surface, inverted ridges 6 and 6 are provided, and after rainwater is collected at the center to increase the flow velocity, the inverted ridges 6 and 6 are formed. Center break 6 at
A triangular diversion ridge 7 is provided below a, and rainwater once collected in the center is sent out separately on the left and right.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a flat roof tile laid on a flat portion of a roof. In the present invention, the flat roof tile is a general term for flat roof tiles such as deep tiles, shavings, etc., as well as flat roof tiles such as eye plates, chamfers, and girder bar tiles.

[0002]

[Prior art]

 In Japanese architecture, there are many tiled roofs made with Japanese tiles. In the case of a tiled roof, flat tiles are arranged side by side along the upward sloping surface while overlapping the end portions in one direction, and the upper end portion is overlapped on the upper side so that the entire roof is evenly spread. It is arranged so that it may be. As a result, rainwater flows down to the roof tiles stacked on the lower side in order, and the structure does not allow rain to pass through to the back side. In addition, since the flat tiles are arranged so that the left and right sides are bent back to the front side, rainwater flows down along the lowest center. Since the tiles are made of earthenware, water does not soak into them, and even if they get wet, they quickly dry due to the heat of the sun, but since the weight of each tile is a few kilograms, they do not shift from each other even when exposed to strong winds. The weight of several tons to a dozen tons acts on each eaves, so the burden on the pillars is great.

[0003]

[Problems to be solved by the device]

 When it rains downpour due to a typhoon, rainwater spreads over the surface of the roof tiles and overflows to the left and right, and even the overlapping areas with the adjacent roof tiles are submerged in the water. If this happens, rainwater may flow into the back side through the gap between the parts that are overlapped side by side, allowing rainwater to enter indoors. Also, in order to reduce the weight and reduce the load on the pillar, it is necessary to hit the roof nails or tie it with a wire so that it will not float up even if it receives strong wind, but if it becomes thinner than that, it will be insufficient in strength. The biggest problem is that it tends to invite vertical cracks.

[0004]

[Means for Solving the Problems]

 The present invention concentrates the flow of rainwater in the center as much as possible and provides a structure of flat tiles that is hard to break even if it is thin.The structure is such that the left and right sides are bent back to the front with respect to the roof of the upward slope. It means that the ridges for collecting water were formed on the surface of the flat roof tiles arranged in the shape of inverted C in the vertical direction. In addition, a triangular ridge for shunting with a sharp upper side is provided below the center cut of the ridge on the surface, or a side edge of the ridge is formed on the side of the ridge so that the side edge is overlapped with the upper surface of the side wall. It is advisable to provide a vertically elongated ridge for water reversal that is in close contact with the edge.

[0005]

[Embodiment of the invention]

 An example in which the flat roof tile according to the present invention is applied to a chamfered roof tile will be described with reference to the drawings. FIG. 1 shows an embodiment, where (a) shows the front surface and (b) shows the back surface. The surface of the flat tile 1 is largely warped to the front side in the left-right direction like a general flat tile, the left end portion is curved to the back side, and rectangular notches 2 are formed at the lower right, upper left, and corners, respectively. It has a shape with 2. Further, along the upper edge and the right side edge, the raised step portions 3 and 3'are formed in a strip shape, and the raised step portion 3 at the upper edge is formed into two steps with the step portion 3a which is one step lower and the step portion 3a which is lower. A nail hole 4 is formed in the left side portion of 3a. Further, thin ridges 5, 5 ... For water return are intermittently provided at the upper end portion and the left end portion in parallel with the raised step portions 3, 3 '.

In the lower half area of the surface, a wide water collecting projection 6, 6 having an inverted V-shape with respect to the vertical direction, and a central cut 6 a in the C-shaped projection 6, 6 are formed. In the lower part of the, a shunting portion 7 having a triangular shape with a sharp upper side is provided. The ridges 6 and 6 have their upper edges rising almost vertically and are continuous to the surface with a gentle downward slope. In addition, a wide vertical elongated water repelling ridge 8 is provided at the right end, and the right end edge of the water repelling ridge 8 is in close contact with the edge of the roof tile to be overlaid on the upper surface of the side. It should rise almost vertically, the lower end is bent toward the center of the bottom, and continues to the surface with a downward slope toward the left.

On the other hand, on the upper edge of the back surface, triangular protrusions 9 and 9 are provided at two positions sandwiching the center, and triangular protrusions 10 are also provided on the left side thereof. A concave portion 10a is formed on the surface of the above so as to correspond to the protrusion. In addition, a flat surface 11 is formed by scraping at a lower portion corresponding to the protrusions 9, 9.

On the surface of the flat roof tile thus formed, as shown in FIG. 2, the ridges 6 and 6 and the ridges 7 for diversion are used to collect rainwater in the center and then A passage for the rainwater that will be drained separately will be secured. Therefore, when they are laid vertically and horizontally on the roof with some of them overlapping, vertical rainwater guideways are formed in each row, as shown in FIG. When rainwater flows along this rainwater guideway, the flow speed is accelerated when passing through a narrow cut, and the rainwater on both sides is entrained and flows down, so the rainwater covering the overlapping part is drawn to the center. Therefore, the larger the amount of water, the stronger the tendency of negative pressure acting on the overlapping portion, and the wraparound to the back side is prevented.

[0009] By forming the protrusions in an inverted V shape, the flow velocity increases at the cut portion where the flow path becomes narrow, so that the guiding function of concentrating the rainwater in the overlapping portion in the center is exhibited, and the overlapping portion of the overlapping portion is exerted. Entry into the room is blocked through the gap. In the above-described embodiment, the water is collected in the center by the ridges, and is then divided into left and right by the triangular ridges to be sent out, so that the water collecting power is enhanced when the water is guided to the center again. By using the roof tile of the present invention, it will be difficult to leak even in heavy rain, and even if it is laid on a roof with a gentle slope, rainwater will be efficiently drained.

Further, by providing the vertically long water repellent ridges 8 as shown in FIG. 4, the side edges of the adjacent roof tile 1 ′ that overlaps the upper surface of the water repellent ridges 8 are formed as shown in FIG. It is combined so as to be in close contact with the vertical rising surface, has a high water-stopping effect, and has thin ridges that form water folds in three stages, so it is perfect for preventing rain leaks, and adjacent tiles 1 and 1 ' Engage each other and do not slip laterally. The flat roof tile of the present invention has a primary purpose of collecting rainwater in the center by means of a ridge having an inverted V shape, and a ridge for diversion and a ridge for water return may be omitted. It is possible.

By forming the ridges, as shown in FIG. 5, the ribs 6 and 6 and the diversion ridge 7 form a rib structure having a thickness in the left-right direction, so that a reinforcing effect is exerted and the ribs are thinned. However, it is hard to crack and is perfect for weight reduction. By the way, the roof tile of this embodiment, which is formed with a thickness that is slightly more than 20% thinner than the conventional product, easily clears JIS 5 208.5. 2 and is confirmed to have higher rigidity than the conventional product, and the diversion ridge is omitted. Also, the reinforcing effect was recognized.

[0012] Further, the flat portion formed on the back surface ensures reliable positioning with respect to the roof surface (tile rod), and rattling and displacement can be prevented.

[0013]

[Effect of the invention]

 According to the present invention, rainwater is gathered at the center by the ridges provided in the inverted V shape, and the flow velocity is accelerated when passing through the narrow cut of the ridges, so that the rainwater around it is used to accelerate the flow of rainwater. Are drawn in and are prevented from entering the gap. In addition, if a triangular raised portion is provided below the cut, it will be forked once and will be gathered in the center by the tiles immediately below and accelerated at once, so the water collection power will continue to increase and the Even if the amount of rainwater increases, the water collection capacity will be sufficient to compensate for it. In addition, since a vertically long ridge is provided on the side, it guides rainwater to the center and prevents rainwater from overflowing sideways as a weir, engaging with the side edges of adjacent tiles to prevent water. It has a high water repelling function, and also effectively functions as a side slip prevention effect.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a front surface and a back surface of a flat roof tile according to the present invention.

FIG. 2 is an explanatory diagram showing a flow of rainwater on a tile surface.

FIG. 3 is an explanatory diagram showing a flow of rainwater on a laid roof.

FIG. 4 is an explanatory diagram showing a cross section of a laid roof tile.

FIG. 5 is an explanatory diagram showing a central portion of a cut surface taken along a cutting line that crosses a ridge for branching of a roof tile.

[Explanation of symbols]

1, flat tile, 2 notch, 3, 3 ', raised step, 3a, low step, 4, nail hole, 5, thin ridge,
6, ridge, 6a, center cut, 7, ridge for diversion, 8, projection for draining, 9, projection, 10 projection
10a ... recess, 11 ... flat part.

Front page continuation (72) Nobuo Ito Creator Nobuo Ito 1388, Takagi-mura, Shimoina-gun, Nagano 2 Nihonya Pottery tile cooperative association

Claims (3)

[Utility model registration claims] 1. A projecting surface for collecting water in an inverted C-shape arrangement in the vertical direction on a surface of a flat tile which is arranged so that the left and right sides are warped to the front side with respect to the roof having an upwardly inclined surface. Flat roof tiles. 2. The flat tile according to claim 1, wherein a triangular diversion ridge having a pointed upper side is provided below the center cut of the ridge on the surface. 3. A vertical water return protrusion having a side edge closely contacting an edge of a roof tile superimposed on an upper surface of a side surface, the side edge of the protrusion on the surface. Item 1
Or the flat roof tile according to any one of 2.