JP3560604B2 - Disaster prevention tile - Google Patents

Description

The present invention relates to a disaster prevention tile that prevents the flat roof tile from being displaced and lifted by strong winds to improve wind resistance and also improves waterproof performance.

The first function required for disaster prevention tiles is wind resistance that prevents scattering due to strong winds during typhoons.
In addition, the second function and the like that are required to be equivalent to the wind resistance performance are required to have excellent waterproof performance in a storm.

Hereinafter, the conventional technology will be described in detail. However, in the conventional technology, there is no technology that achieves all of wind resistance performance (first function) and waterproof performance (second function) at the same time.

As a conventional disaster prevention roof tile, a wind resistant thick flat roof tile illustrated in FIGS. 13 to 16 of the present specification is known.
In other words, the conventional wind-resistant thick flat roof tile is a thick flat roof tile that has a combined structure in which the jointed portion of the pier covering portion a and the insertion receiving portion b is accommodated in a thickness of almost one roof tile. The hook receiving part b is formed at the end on the head c side of the insertion receiving part b by the water guiding band d and the water return e, and has a surface of the same level as the back surface of the roof tile. A tile notch h is formed on the upper surface and a locking projection i having a slightly higher back surface is formed on the upper surface portion of the roof tile. The latching protrusion i restrains the latch receiving part f of the diagonal upper stage side roof tile and latches and latches (see, for example, Patent Document 1).

In the above-mentioned conventional wind-resistant thick flat roof tile, when the bottom g locking projection i is formed, a bottom notch h is formed near the center on the bottom g side (in the conventional manufacturing method, the notch is essential). Therefore, the water return j on the side edge of the butt portion h has to be displaced toward the head c side in the vicinity of the center even if it is on a straight line on both sides.
As a result, the water return j is in a deformed state at the butt g side edge, and the water flowing portion l between the water return j on the butt g side and the parallel inner water return k is in a deformed state. Therefore, the water return j near the center approaches the inner water return k or approaches the head c of the upper tile to be polymerized, and the distance between the two becomes shorter. The backflow rainwater blown from the water could not be received reliably, or the drainage could not be performed smoothly, and the waterproof performance was insufficient.

It has been described that the above prior art and its drawbacks are caused by the bottom notch h formed near the center on the bottom g side. However, the bottom notch h needs to be formed to form the bottom g locking projection i. The reason will be described below.
That is, in the conventional roof tile forming method, since the upper and lower molds (molds) are formed by moving the material up and down in the vertical direction and pressurizing the raw material, the shape having a space portion in the middle in the vertical direction (such as a bowl shape) In this molding, the part forming mold for molding the space part was brought into contact with and caught by the upper molding part of the space part in the collar part when the mold was raised after pressure molding, and the collar part molding was impossible. .

Hereinafter, the relationship between wind resistance performance and waterproof performance, which are the first and second functions of conventional disaster prevention tiles, will be described.
Wind resistance performance is enhanced and raised by pressing the upper tile head engaging portion (locking receiving portion f) with the bottom tile bottom engaging portion (locking protrusion i). How much the wind speed can withstand the high wind pressure varies depending on the strength of the engaging portions of the upper and lower roof tiles.
In the above prior art, the locking receiving portion f on the head c side has many connecting portions with the water guide band d, but the connecting portion with the water return j of the locking projection i on the butt g side is the upright portion i. 'Because it is only, especially ass
If the strength of the locking projection i) is not sufficient, it will break without being able to withstand strong wind pressure, and sufficient wind resistance performance will not be obtained.
Therefore, in order to secure and raise the strength of the buttocks engaging portion (locking protrusion i), it is necessary to increase the cross-sectional area of the maximum load load portion in the buttocks engaging portion (locking protrusion i). Butt direction (
It is effective to increase the cross-sectional area by increasing the length in the (flow direction).
However, in the above prior art, the bottom of the bottom engaging portion (locking protrusion i) is a bottom notch h, and increasing the length of the engaging portion is the length of the bottom notch h. This is directly connected to the increase of the height, and as a result, the formation position of the water return j moves from the butt side to the head side, and the waterproof performance described above further decreases.
In other words, as for the waterproof performance, as the polymerization length in the flow direction increases, the waterproof performance improves. Therefore, the bottom of the bottom engaging portion (locking protrusion i) is the bottom notch h as in the above-described prior art. If this is the case, the polymerization length will be shortened by the length of the bottom notch h, and the waterproof performance will be reduced. The longer the bottom engaging portion (locking projection i), the higher the wind resistance, and the bottom notch h The longer the (locking protrusion i), the more contradictory conditions were that the waterproof performance was reduced.
Therefore, the above conventional technology cannot satisfy both the wind resistance performance and the waterproof performance,
Considering that disaster prevention tiles (windproof tiles) need to be strong against both wind and rain, it can be said that there was an unsolved problem with the above prior art.

JP-A-8-93141

As described above, conventional disaster prevention tiles have no technology that satisfies the first and second functions of wind resistance and waterproof performance at the same time.

The present invention, the prior art based on, view of the problems could not be achieved wind and waterproof function at the same time on the upper surface near the center of the high trailing water flashing from the surfaces of the該瓦body in the tile main body, the rising portion and the standing An engaging projection is provided with a continuous horizontal portion from the top to the crosspiece, and an insertion space is formed between the lower surface of the engaging projection and the upper surface of the water return located directly below the lower surface of the horizontal portion. In addition, the engagement insertion part whose vertical position is regulated by being inserted into the insertion space when staggering is bent, a part of the insertion part near the tip of the water return is bent inward on the outside of the parts, the positional relation of the flow direction of the engaging projection and the engaging insertion portion together with the adjustably provided, the upper surface of the engagement plug portion from the lower surface of the insertion portion
By forming the upper side, the above-mentioned problem is solved by forming the engagement convex part with the horizontal part protruding to the crosspiece side without forming the butt side notch so as to simultaneously achieve the wind resistance and the waterproof function. .

In short, the present invention, in the vicinity of the center of the upper surface of the bottom side water return higher than the surface of the tile main body in the tile main body, provided with an engaging convex portion that is a continuous vertical portion and a horizontal portion from the vertical portion to the crosspiece side, An insertion space is formed between the lower surface of the horizontal portion of the engaging convex portion and the upper surface of the water return located directly below the lower surface of the horizontal portion. The restricted engagement insertion part is placed outside the bent part where the part near the tip of the water return in the insertion part is bent inward, in the flow direction of the engagement convex part and the engagement insertion part. Since the positional relationship is adjustable and the upper surface of the engagement insertion part is above the lower surface of the insertion part, the bottom side water return of the tile main body with the engagement convex part is deformed on the bottom side of the tile main body In other words, it is possible to form an engaging convex part with a horizontal part projecting to the crosspiece without forming a butt-side cutout. Waterproof performance (second function) can be fully exerted, and disaster prevention tiles located in the diagonally up and down direction when engaged in a staggered manner are engaged, exhibiting wind resistance function (first function) against strong winds, etc. It can prevent the tiles from floating and shifting.
Therefore, the thing of this invention can be used as the disaster prevention tile which satisfied all the wind resistance and waterproof performance which are the 1st, 2nd function.
In addition, since the engaging insertion part is located outside the bent part, the engaging convex part comes into contact with the upper and lower parts in the flow direction of the bent part, so the adjustment amount is limited, but without being detached. The practical effect such as being able to ensure the engaged state is significant.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In the basic configuration of the disaster prevention tile 1 according to the present invention, as shown in FIG. 1, the roof tile body 2 is formed in a planar rectangular shape.
As shown in FIGS. 1, 2, and 3, the short end portion (front and rear sides in FIG. 1) of the roof tile body 2 is formed with the head 3 and the buttocks 4, respectively, and the drooping 5 protrudes from the lower end of the head 3. In addition, on the surface of the tile body 2, a single water return 6 is provided in front of the bottom 4 in the transverse direction of the tile body 2.
Note that the clear shape of the sag 5 is shown in FIG. 3, and is simplified in other drawings.

The water return 6 provided on the above-mentioned bottom 4 is slightly different in shape in the first embodiment of FIGS. 1 to 6 and the second embodiment of FIG. 8, but both are compared with those of the prior art. Is decisively different.
That is, in the prior art, in order to form the locking projection i, the bottom notch h must be formed in the water return j. However, in the first and second embodiments of the present invention, The formation of the joint protrusion 16 is integrally formed on the water return 6 (part of the flat terrace 6b), and the shape of the water return 6 in the vicinity of the formation of the engagement protrusion 16 is exactly the same as the surrounding area. That is, it has a uniform flat terrace shape or a jetty shape without providing a cutout portion or cutting it.

Moreover, the long one end part (right side in FIG. 1) of the roof tile body 2 is formed as a lower cut-off bar 7 and a strip is provided on the other end edge part (left side in FIG. 1) with a step on the lower side. And is formed as an insertion portion 8.
The insertion portion 8 has a length from the bottom 4 to the vicinity of the head 3 and a width of overlap with the crosspiece 7 of the roof tile body 2, along the long end of the surface and the end on the bottom 4 side. A bowl-shaped water return 9 is provided, and a water return protrusion 10 is provided in the center of the surface in the length direction of the insertion portion 8.
In addition, the front-end | tip part of the insertion part 8 and the front-end | tip part of the water return 9 in the insertion part 8 are not a clear shape by the relationship which forms the droop 5, or a level | step difference is reduced gradually, or one part Is omitted.

In addition, on the both sides of the surface of the roof tile body 2, water is returned in the direction of flow 11, 11
a and terraces 12 and 12a are provided, but terrace 12
, 12a etc. may be omitted.
Further, V-shaped concave portions 13 and 13a are provided on the surface of both ends of the water return 6 of the bottom 4 and convex portions 14 and 14a are provided at corresponding positions on the back surface, and nail holes 15 and 15a are provided in the vicinity of the water return 6 and the concave portion 13. Is provided.

In the disaster prevention tile 1 having such a basic configuration, as shown in FIGS. 1 to 6, the engagement convex portion 16 and the engagement insertion portion 17 as the component requirements of the wind resistance function are arranged near the center of the top surface of the water return 6 of the bottom 4. And are provided at the side end portions of the insertion portion 8, respectively.
That is, as shown in FIGS. 1 and 3, in the vicinity of the center of the water return 6 provided on the butt 4 (other than the portion where the recess 13 is formed), the water return 6 has a planar terrace shape.
More specifically, a water return 6 is formed by an inclined surface 6a rising from the center of the roof tile 2 toward the tail 4 and a flat terrace 6b having a predetermined width in the flow direction, and the inclined surface 6a is substantially formed. It consists of water return 6.
As shown in FIGS. 2, 5, and 6, the upright part 18 and the horizontal part 19 on one side (the cross 7 side) are connected to the vicinity of the center of the upper surface of the flat terrace 6 b in the water return 6. (Water return 6 top surface and horizontal part 19
Between the lower surfaces, a hook-like engagement convex portion 16 having a insertion space 20 into which the engagement insertion portion 17 can be inserted from one side (the cross 7 side) is provided in a protruding shape.
Since the flat terrace 6b is wider than the water return 6 at both ends in the flow direction,
The engaging convex portion 16 is also formed wider in the flow direction than the water return 6.

On the other hand, as shown in FIGS. 1, 5, and 6, a part near the tip of the water return 9 provided at the side end of the insertion portion 8 is bent inward, and the flow direction is outside the bent portion 21. A strip-shaped engagement plug 17 having a predetermined length
, And the upper surface of the engagement insertion portion 17 is located above the lower surface of the insertion portion 8 as shown in FIG.
The shape of the bent portion 21 of the water return 9 is inwardly inclined, flowing direction, outwardly inclined from the bottom 4 to the head 3, and the bent portion 21 is generally “]” bracketed, and is raised and lowered. The upper and lower locking parts 22 for the water inclined part,
22a, respectively.
In other words, the upper and lower locking portions 22 and 22a regulate the length of the engagement insertion portion 17 having a predetermined length in the flow direction.

FIG. 8 is a plan view showing the disaster prevention roof tile 1 of the second embodiment, and the major difference from the first embodiment of FIGS. 1 to 6 is the structure of the water return 6 provided on the bottom 4 side.
That is, the water return 6 of the second embodiment is provided in a straight line with substantially the same width on the bottom 4 side, and the shape of the vicinity of the center of the water return 6 is formed as a straight jetty as compared with that of the prior art. The point which formed the engagement convex part 16 on the jetty is different from the thing of 1st Example.

Next, the operation of the disaster prevention tile according to the present invention will be described.
As shown in FIG. 4, when a large number of disaster prevention tiles 1 are installed in a staggered manner, the head 3 of the upper disaster prevention tile 1U partially overlaps on the bottom 4 of the lower disaster prevention tile 1D, and at each stage Adjacent disaster prevention tile 1D1,
1D2 is polymerized by inserting the insertion portion 8 into the lower notch of the crosspiece 7, and the terraces 12 and 12a of both sides are also adjacent to each other.

Then, as shown in FIGS. 5 and 6, the engaging projections 16 of the upper and lower disaster prevention tiles 1U and 1D that are shifted by half in the horizontal direction are provided.
In the engagement portion of the engagement plug 17, the engagement plug 17 of the upper disaster prevention roof tile 1U is inserted from the side with respect to the insertion space 20 of the engagement projection 16 of the lower disaster prevention roof tile 1D. When inserted, both are in an engaged state, and the vertical positional relationship is restricted.

Further, in the engagement between the engagement convex portion 16 and the engagement insertion portion 17, the engagement insertion portion 17 has a predetermined length, so that the engagement position in the flow direction can be adjusted.
Further, even if the positional relationship in the flow direction between the engagement convex portion 16 and the engagement insertion portion 17 can be adjusted, there are upper and lower locking portions 22, 22a at the upper and lower positions in the flow direction of the engagement insertion portion 17, respectively. However, since the engagement convex portion 16 is freely abuttable, the adjustment amount is limited, but the engagement state in the flow direction is ensured without detachment.

In addition, at the joint of the disaster prevention tiles 1D1 and 1D2 adjacent in the horizontal direction, the water return 11, 11a,
Rainwater that flows from the gap between the junctions of the terraces 12 and 12a flows onto the insertion portion 8.
Even if the amount of rainwater is large and the flowing water speed is high, it is decelerated by the water return ridge 10 protruding from the center of the insertion portion 8 and is stopped by the water return 9 on the side edge, and flows to the head 3 side.
Then, a part of the flowing water on the insertion portion 8 is guided by the engaging portion 22 above the bent portion 21 continuous with the water return 9 and smoothly flows downward at the place where the engagement insertion portion 17 is formed. .

Corresponding to the locations where the water return 11, 11a and terraces 12, 12a are formed, the rear surface of the disaster prevention roof tile 1 is provided with a notch recess 23 at a position corresponding to the mating to improve healing.

Next, the packing polymerization state of the plurality of disaster prevention tiles 1 will be described.
As shown in FIG. 7, when the plurality of disaster prevention roof tiles 1 are overlapped at the same position in the packaged state, the engaging convex portion 16 is in an upward projecting state on the surface side. Since the planar terrace 6b to be formed is higher than the roof tile body 2 through the step of the inclined surface 6a, the lower side of the planar terrace 6b is an engaging convex portion.
It consists of 16 storage notches 24.

Next, the reason why the configuration of the present invention has become possible, that is, the molding method will be described with respect to the decisive difference between the present invention and the prior art (presence / absence of a notch portion).
FIG. 9 is a cross-sectional view of a mold for pressure-molding the disaster prevention tile 1, FIG. 10 is an enlarged cross-sectional view of a mold showing the main part of the portion where the engaging convex portion 16 is formed, and FIG. (B) shows a state in which the raw material of the insertion space 20 is removed and the hook-like engagement convex part 16 is formed, and FIG. 11 shows the concave part of the upper mold where the engagement convex part 16 is formed. FIG. 12 is a schematic view showing a two-stage molding state. FIG. 12A is a schematic view showing a raw material put into the cavity 31 of the mold 30, and FIG. (C) shows an intermediate state in which the press-molding portion 37 is in the process of being advanced and the insertion protrusion 20 is formed in the engagement convex portion 16, and (d) shows the insertion space 20 on the side. The state where the hook-shaped engagement convex part 16 formed in the part is formed is shown.
The mold 30 is composed of upper and lower molds 32 and 33 (including side frames) that form a cavity 31 that is a raw material charging space. In the illustrated example, the lower mold 33 molds the back surface of the disaster prevention tile 1 and the upper mold 32 is disaster prevention. The entire surface including the insertion space 20 of the surface of the roof tile 1 and the engaging convex portion 16 is formed, and the insertion space 20 is formed at the place where the engaging convex portion 16 is formed.
A partial forming die 34 for molding is arranged.
That is, a substantially trapezoidal convex portion forming portion 35 that forms the engaging convex portion 16 including the insertion space 20 is cut out at a predetermined position of the upper die 32, and the lower die 33 is formed outside the convex portion forming portion 35. An extended external forming part 36 (a part of the side frame) is installed.
In addition, a press-molding portion 37 having a shape corresponding to the insertion space 20 can be moved forward and backward in the direction of the convex portion forming portion 35 with a cylinder 37a on the partial forming die 34 arranged outside the external forming portion 36 of the convex portion forming portion 35. Is arranged.
Further, a concave portion 38 is formed in a part of the surface of the upper mold 32 where the convex portion forming portion 35 is formed and is located at the back of the position corresponding to the insertion space 20 facing the convex portion forming portion 35. An opening is made so that the side faces the cavity 31.
That is, the concave portion 38 is formed in front of the position where the press molding portion 37 of the partial forming die 34 has advanced into the convex portion forming portion 35.
Therefore, the molding surface of the mold 30 is the upper and lower molding surfaces of the upper and lower molds 32 and 33, the inner surface of the side frame, and the convex portion forming portion.
35 and the inner surface of the concave portion 38 and the inner surface of the external forming portion 36 correspond to each other, and the tip of the press molding portion 37 in the partial forming die 34 also constitutes a part of the molding surface of the mold 30.

Next, a molding method using the mold 30 having such a configuration will be described.
First, as shown in FIG. 12 (b) and FIG. 10 (a), the raw material charged into the cavity 31 is changed into the upper and lower molds 32.
, 33, the engaging convex part 16 including the roof tile body 2 and the insertion space 20 is integrally molded with the raw material of the cavity 31 and the convex part forming part 35 (including the concave part 38).
Next, as shown in FIGS. 12 (c), 12 (d), and 10 (b), a part of the molding surface is obtained by the operation of the cylinder 37a while maintaining the press molding state by the upper and lower molds 32 and 33. The press forming part 37 of the partial forming die 34 is advanced to the convex part forming part 35, the raw material at the position of the insertion space 20 in the convex part forming part 35 is pressed out, and the upright part 18 where the insertion space 20 exists And a hook-like engagement convex portion 16 composed of the horizontal portion 19 is formed.
The raw material present at the position corresponding to the insertion space 20 at the time of molding of the hook-shaped engaging convex portion 16 is the rising portion 18 in the molded product, the horizontal portion 19, and the cavity 31 in the mold 30 (of the roof tile 2). Water return 6)
And the engaging projection 16 including the water return 6, the upright portion 18, and the horizontal portion 19 of the roof tile body 2 is integrally formed.
Then, after partial molding of the engaging convex portion 16 having the insertion space 20, the pressing convex portion 37 is retracted, and then the upper and lower molds 32, 33 are separated vertically to complete the molding, whereby the engaging convex portion 16 is not damaged, and does not adversely affect the water return 6 as compared with the prior art, and the lower surface of the horizontal portion 19 of the engaging convex portion 16 and the horizontal portion 19
An insertion space 20 is formed between the upper surface of the water return 6 just below the lower surface.
As shown in FIG. 10 (b), if the most advanced position of the press molding portion 37 of the partial forming die 34 is substantially flush with the front surface side of the concave portion 38, the engagement convex portion 16 is slightly surrounded. Even if such burrs are generated, the burrs are naturally separated during drying after molding.

It is a top view of the disaster prevention roof tile which concerns on this invention. It is a front view of FIG. It is a side view of FIG. It is a top view which shows the staggering of the disaster prevention tile. It is an enlarged plan view which shows the wind-resistant engagement part at the time of staggering. It is principal part sectional drawing of FIG. It is a figure which shows the superposed | packed package form. It is a top view of the disaster prevention roof tile of 2nd Example. It is sectional drawing of a metal mold | die. It is an expanded sectional view of the metal mold | die principal part of an engagement convex part formation location. It is a principal part expanded side view of the engagement convex part formation part in an upper mold | type. It is a schematic diagram which shows the shaping | molding state of an engagement convex part. It is a perspective view of the conventional latching wind-resistant thick flat tile. FIG. 14 is a plan view of the roof tiles of FIG. FIG. 15 is a perspective view of a main part of the kneading in FIG. 14. FIG. 15 is a cross-sectional view taken along line AA in FIG. 14.

Explanation of symbols

2 Tile body 4 Butt 6 Water return 7 Cross 8 Insert part 9 Water return
16 Engaging projection
17 Engagement plug
18 Upright
19 Horizontal section
20 Plug-in space

Claims (1)

In the tile main body, an engagement convex portion is provided in the vicinity of the center of the upper surface of the bottom-side water return higher than the surface of the tile main body, and the vertical portion and a horizontal portion from the vertical portion to the crosspiece side are continuously provided. An insertion space is formed between the lower surface of the horizontal portion and the water return upper surface located directly below the lower surface of the horizontal portion, and the vertical position is controlled by being inserted into the insertion space when staggered together Adjustable positional relationship in the flow direction between the engaging convex part and the engaging plug part on the outside of the bent part where the part near the tip of the water return in the plug part is bent inward. And the upper surface of the engagement plug is above the lower surface of the plug
Disaster prevention tile characterized by that.

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