Fitting type vertical roofing material and vertical flat roof using the roofing material

Abstract

To make it difficult to release the connection fixation of adjacent two roofing materials by a negative pressure load, and to prevent a fixing bracket for fixing a facility from coming off.SOLUTION: A vertical roofing material comprises: a body part having a pair of long-length marginal parts; a lower seam joint connected to the one long-length marginal part of the pair of long-length marginal parts; and an upper seam joint connected to the other long-length marginal part. The lower seam joint has a double structure obtained by bending a folded part where one end part of a metal plate in a girder direction orthogonal to a span direction in the same direction at plural positions, and comprises a first rise part, a first tilted part and a first extension par. The upper seam joint includes a second rise part, a second tilted part, a second extension part and a third tilted part, and further includes an internal space surrounded by the second rise part, the second tilted part and the second extension part, and into which a part to be fitted provided at a second roof component member is inserted, and a projection provided at the second rise part.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a fitting-type vertical roofing material and a vertical flat roof using said roofing material. [Background technology]

[0002] Generally, standing flat roofs are provided that use roofing materials made of metal sheets such as Galvalume Steel Sheet (registered trademark). In a standing flat roof, among the multiple roofing materials laid in the girder direction, adjacent vertical roofing materials are connected and fixed using a dedicated tool such as a seam fastener (including an electric one). When two adjacent roofing materials are connected and fixed using a seam fastener, repair work such as replacing the roofing materials requires the work of opening the part where the two adjacent roofing materials are connected and fixed (hereinafter referred to as the seam fastener) or cutting the seam fastener.

[0003] In recent years, a method of connecting and fixing two adjacent roofing materials by fitting the top seam of one roofing material into the bottom seam of the other roofing material has been adopted (see Patent Document 1). With this method, two adjacent roofing materials can be connected and fixed together or released simply by fitting or releasing the top seam of one roofing material into or from the bottom seam of the other roofing material. Therefore, compared to methods of connecting and fixing two adjacent roofing materials using dedicated tools such as a seam fastener, this method makes it possible to more efficiently install new vertical roofing materials or renovate existing roofing materials. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-056584 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the case of a standing roof that is built using interlocking roofing materials, when negative pressure loads caused by strong winds such as typhoons act on the roofing materials, the roofing materials may deform and the upper and lower seams may become disengaged, creating a dangerous situation. Therefore, there is an urgent need to find a way to protect against negative pressure loads when connecting and fixing roofing materials.

[0006] In recent years, the number of homes with rooftops equipped with power generation equipment such as solar panels and air conditioning equipment such as outdoor units for air conditioners has been increasing. In such homes, the mounting hardware for installing the power generation equipment or air conditioning equipment may be fastened to the above-mentioned seam fastening. However, if the mounting hardware is not properly fastened to the seam fastening, the mounting hardware may come off the seam fastening, which is extremely dangerous.

[0007] The present invention was made in consideration of the above-mentioned problems, and aims to provide a fitting-type vertical roofing material that makes it difficult for the connection and fastening of two adjacent roofing materials to be released due to negative pressure loads applied to the roofing materials by strong winds, etc., and a vertical roof using said roofing material. Also, the present invention aims to provide a fitting-type vertical roofing material that makes it possible to prevent installation fittings for installing other equipment from coming off the fastening parts, and a vertical roof using said roofing material. [Means for solving the problem]

[0008] A vertical roofing material according to one aspect comprises a main body having a pair of long edges extending along the beam direction, a bottom seam connected to one of the pair of long edges, and an top seam connected to the other long edge, the bottom seam being capable of fitting into a fitting portion provided on a first roof component adjacent to one of the long edges, and the top seam being capable of fitting into a fitted portion provided on a second roof component adjacent to the other long edge, the vertical roofing material being made from a metal plate, the bottom seam having a double structure in which a folded portion formed by folding back one end of the metal plate in the girder direction perpendicular to the beam direction is folded back in the same direction at a plurality of different positions, and the bottom seam has a first rising portion erected from one of the long edges, a first inclined portion sloping downward from the upper end of the first rising portion towards the main body, and a first inclined portion sloping downward from the lower end of the first inclined portion towards the first rising portion. the upper seam has a structure in which the other end of the metal plate in the girder direction is bent multiple times, and the upper seam is characterized by having a second rising portion erected from the other long edge portion in the same direction as the first rising portion, a second inclined portion sloping downward from the upper end of the second rising portion to the outside of the main body portion, a second extending portion extending from the lower end of the second inclined portion toward the second rising portion, a third inclined portion sloping downward from the lower end of the second extending portion to the outside of the main body portion, an internal space surrounded by the second rising portion, the second inclined portion, and the second extending portion, into which a fitting portion provided on the second roof component is inserted, and a protrusion provided on the second rising portion, extending along the extension direction of the second rising portion, and protruding toward the main body portion.

[0009] Furthermore, the upper seam has a gap connecting to the internal space between the bent portion provided between the second extension portion and the third inclined portion and the second rising portion, the width in the girder direction being narrower than the maximum width of the mating portion provided on the second roof component member, and the gap is expanded when the mating portion provided on the second roof component member presses against the third inclined portion during the process of inserting the mating portion provided on the second roof component member into the internal space, and it is preferable that the second extension portion engages with the mating portion provided on the second roof component member when the mating portion provided on the second roof component member is inserted into the internal space.

[0010] In addition, it is preferable that an installation fitting for installing other equipment is fixed to the upper seam using a fixing device, and that the fixing device is abutted against the first raised portion at a position lower than the protrusion in the height direction of the first raised portion.

[0011] Furthermore, it is preferable that the protrusions are provided at two or more locations at a predetermined interval in the height direction of the first raised portion, and that the fastener is abutted against the first raised portion between the protrusions provided at the predetermined intervals in the height direction of the first raised portion.

[0012] Furthermore, it is preferable that the tip of the first extension portion is held at a position a predetermined distance away from the first rising portion, and that when the first inclined portion is pressed by the fitting portion provided on the first roof component, the first inclined portion and the first extension portion rotate toward the first rising portion and abut against the first rising portion.

[0013] Furthermore, it is preferable that the fitting portion provided on the first roof component be the top seam of another vertical roofing material adjacent to the main body on the other long edge side, and it is preferable that the fitted portion provided on the second roof component be the bottom seam of another vertical roofing material adjacent to the main body on one long edge side.

[0014] Another aspect of a vertical roof is that which is constructed by arranging a plurality of the vertical roofing materials described above in the direction of the beams and connecting adjacent vertical roofing materials together. [Effects of the Invention]

[0015] According to the present disclosure, it is possible to make it difficult for the connection and fixation between two adjacent roof materials to be released due to negative pressure loads applied to the roof materials by strong winds, etc., and to prevent the fixing hardware for fixing equipment from coming off the seam fastening portion. [Brief explanation of the drawings]

[0016] [Figure 1]FIG. 1 is a schematic perspective view showing an example of a roofing material according to the present embodiment. [Figure 2] FIG. 2 is a schematic perspective view showing an example of a roofing material having a central step portion extending along the inter-beam direction at the center of the main body portion in the girder direction. [Figure 3] FIG. 3 is a front view showing an example of the structure of a roofing material. [Figure 4] FIG. 4 is a front view showing the state in which the fastening metal fitting is fastened to the fastening portion. [Figure 5] FIG. 5 is a front view showing a state in which two ridges are provided on the upper seam, a bolt is butted between these ridges, and the fastening metal fitting is fastened to the seam fastening portion. [Figure 6] FIG. 6 is a perspective view showing an example of a case where three roofing materials are laid in the girder direction. [Figure 7] FIG. 7 is a front view showing the state before the top seam of a new roofing material is fitted into the bottom seam of a roofing material fixed to a sheathing board. [Figure 8] Figure 8 is a front view showing the state in which the engagement release portion of the upper seam of the roofing material abuts against the sliding contact portion of the lower seam of the roofing material fixed to the sheathing board during the process of fitting the upper seam of the roofing material into the lower seam of the roofing material fixed to the sheathing board. [Figure 9] Figure 9 is a front view showing the state in which the tip of the engaging portion of the bottom seam of the roof material fixed to the sheathing board abuts the rising portion during the process of fitting the top seam of the roof material into the bottom seam of the roof material fixed to the sheathing board. [Figure 10] FIG. 10 is a front view showing the state in which the top and bottom seams of two adjacent roof materials are fitted together. [Figure 11] FIG. 11 is a front view showing the state immediately before the engagement between the upper seam and the lower seam is released using a special jig. [Figure 12] FIG. 12 is a front view showing a case where a negative pressure load acts on one of the two roof materials. [Figure 13] FIG. 13 is a front view showing a state in which one of the two roof materials is lifted up, causing the tip of the locked portion of the bottom seam of the roof material fixed to the sheathing board to abut against the rising portion. [Figure 14] FIG. 14 is a front view showing a case where a negative pressure load acts on each of the two roof materials. [Figure 15] FIG. 15 is a front view showing a state in which one piece of the folded-back portion is bent and comes into contact with the engagement release portion of the upper seam. [Figure 16] FIG. 16 is a front view showing a state in which a lower seam having a protrusion on the rising portion that protrudes toward the locked portion is fitted into an upper seam of an adjacent roof material. DETAILED DESCRIPTION OF THE INVENTION

[0017] The fitting-type vertical roofing material shown in this embodiment will be described below with reference to the drawings. Figure 1 is a schematic perspective view showing an example of the fitting-type vertical roofing material shown in this embodiment. Hereinafter, the fitting-type vertical roofing material may be simply referred to as the roofing material.

[0018] The roofing material 10 is formed by processing a metal plate such as a zinc-plated steel plate, an aluminum-zinc alloy-plated steel plate, a copper plate, an aluminum plate, or a stainless steel plate.

[0019] The roofing material 10 has a rectangular main body 11 with the longitudinal direction being the span direction (Y-axis direction in FIG. 1) and the transverse direction being the girder direction (X-axis direction in FIG. 1). Of the four edge portions 11a, 11b, 11c, and 11d of the main body 11, the two edge portions 11a and 11b extending along the span direction (Y-axis direction in FIG. 1) may be referred to as long edge portions 11a and 11b. Of the four edge portions 11a, 11b, 11c, and 11d of the main body 11, the two edge portions 11c and 11d extending along the girder direction (X-axis direction in FIG. 1) may be referred to as short edge portions 11c and 11d. Here, the long edge portion 11a corresponds to one of the long edge portions recited in the claims, and the long edge portion 11b corresponds to the other long edge portion recited in the claims.

[0020] The long edges 11a, 11b are provided with steps 12, 13 extending along the span direction (the Y-axis direction in FIG. 1). These steps 12, 13 are provided to prevent the heads of screws (not shown) located below the roofing material 10 (including base screws 62 that secure the fixing portions 26 of the bottom seams 21) from interfering with the roofing material 10 when the roofing material 10 is laid on the sheathing boards 61 (see FIG. 4, for example).

[0021] In FIG. 1, the main body 11 is flat, assuming that the effect of negative pressure loads is relatively small, such as in the case of a flat-roofed roof on a low-height building, i.e., the length (width) in the girder direction is small and there is no effect on steel plate strain. However, there are also cases where the effect of negative pressure loads is significant, such as in the case of a flat-roofed roof on a tall building. In such cases, as shown in FIG. 2, it is preferable to use a roofing material 100 having a central step 15 extending along the span direction at the center of the main body 11 in the girder direction, as shown in FIG. 2. The central step 15 protrudes in the height direction (Z-axis direction in FIG. 2), which is perpendicular to the span direction and the girder direction. By providing such a central step 15 on the main body 11, the strength of the roofing material 100 against negative pressure loads can be increased or the steel plate strain acting on the roofing material 100 can be reduced.

[0022] Of the long edges 11a, 11b, the long edge 11a has a bottom seam 21 that continues to the long edge 11a. Of the long edges 11a, 11b, the long edge 11b has an top seam 22 that continues to the long edge 11b. The bottom seam 21 fits into the top seam 22 of the roofing material 10 that is adjacent in the girder direction to the roofing material 10 that has the bottom seam 21. The top seam 22 also fits into the bottom seam 21 of the roofing material 10 that is adjacent to the roofing material 10 that has the top seam 22.

[0023] Here, the length (width) of the main body 11 in the girder direction is, for example, 333 mm. The heights of the lower seam 21 and the upper seam 22 are, for example, about 25 mm and 28 mm, respectively. However, the dimensions of the heights of the lower seam 21 and the upper seam 22 are merely examples and are not limited to these dimensions.

[0024] As shown in Figure 3, the bottom seam 21 is created by doubling the end of the metal plate in the girder direction, and then bending the doubly folded portion (hereinafter referred to as the folded portion) 24 in the same direction (e.g., counterclockwise in Figure 3) at two different positions. One piece 24a of the folded portion 24 is bent so that the folded portion 24 extends upward relative to the long edge portion 11a. Hereinafter, the portion extending upward relative to the long edge portion 11a will be referred to as the rising portion 25. The rising portion 25 corresponds to the first rising portion recited in the claims.

[0025] Additionally, the other piece 24b of the folded portion 24 is bent outward from the long edge portion 11a. The outwardly bent portion of the other piece 24b of the folded portion 24 functions as a fixing portion 26 where the roofing material 10 is fixed to a sheathing board 61 (see, for example, FIG. 4) with a base screw 62 (see, for example, FIG. 4).

[0026] As described above, the bottom seam 21 has the folded-back portion 24 bent in the same direction at two different positions. By bending the folded-back portion 24 in the same direction at two different positions, the bottom seam 21 forms the sliding contact portion 27 and the locked portion 28 in addition to the rising portion 25. Hereinafter, the bent portion between the rising portion 25 and the locked portion 28 and the bent portion between the sliding contact portion 27 and the locked portion 28 will be referred to as bent portions 29, 30.

[0027] The lower seam 21 has the rising portion 25, the sliding contact portion 27, and the locked portion 28, so that an internal space A1 is formed in the lower seam 21, surrounded by the rising portion 25, the sliding contact portion 27, and the locked portion 28. In addition, the lower seam 21 has a gap A2 between the rising portion 25 and the locked portion 28, which is continuous with the internal space A1.

[0028] The sliding contact portion 27 is inclined downward from the upper end of the rising portion 25 toward the main body portion 11. The locked portion 28 is inclined downward from the lower end of the sliding contact portion 27 toward the rising portion 25. Here, the sliding contact portion 27 corresponds to the first inclined portion recited in the claims, and the locked portion 28 corresponds to the first extended portion recited in the claims.

[0029] The angle θ1 formed between the rising portion 25 of the lower seam 21 and the sliding contact portion 27 is, for example, an acute angle (greater than 0° and less than 90°). As an example, the angle θ1 is θ1=30°. Furthermore, the angle θ2 formed between the sliding contact portion 27 of the lower seam 21 and the locked portion 28 is, for example, θ2=90°. However, the angles θ1 and θ2 are merely examples and are not limited to these angles.

[0030] When the upper seam 22 of another roofing material arranged adjacent to the lower seam 21 is fitted, the fitting release portion 39, which will be described later, slides into the sliding contact portion 27, expanding the narrowed portion 41 provided in the upper seam 22. Here, the narrowed portion 41 corresponds to the gap described in the claims.

[0031] When the upper seam 22 is fitted into the lower seam 21, the retained portion 28 is retained by the slip-out prevention portion 38 of the upper seam 22. Furthermore, when the adjacent roof material 10 is subjected to a negative pressure load, the retained portion 28 is pressed by the upper seam 22 of the roof material 10 and comes into contact with the rising portion 25.

[0032] The upper seam 22 has a rising portion 35 rising upward relative to the long end portion 11b, an inclined portion 36 bent from the upper end of the rising portion 35 outward from the main body portion 11, and a bent portion 37 provided between them. The rising portion 35 corresponds to the second rising portion recited in the claims, and the inclined portion 36 corresponds to the second inclined portion recited in the claims. Here, if the angle formed by the rising portion 35 and the inclined portion 36 is θ3, the angle θ3 is set to, for example, the same angle as the angle θ1. Furthermore, the radius of the bent portion 37 is larger than the radius of the bent portion 29.

[0033] The upper seam 22 also has a slip-out prevention portion 38 bent from the lower end of the inclined portion 36 toward the rising portion 35, and a fitting release portion 39 bent from the lower end of the slip-out prevention portion 38 outward from the main body portion 11. The slip-out prevention portion 38 corresponds to the second extension portion recited in the claims, and the fitting release portion 39 corresponds to the third inclined portion recited in the claims. Here, if the angle formed between the inclined portion 36 and the slip-out prevention portion 38 is θ4, the angle θ4 is set to, for example, the same angle as the angle θ2.

[0034] In addition, a bent portion 40 is provided between the slip-out prevention portion 38 and the engagement release portion 39. In the girder direction, a distance D1 from the bent portion 40 to the rising portion 35 of the upper seam 22 is narrower than a width D2 from the rising portion 25 to the bent portion 30 of the lower seam 21. In other words, the portion from the bent portion 40 to the rising portion 35 functions as a narrowed portion 41 that continues into the internal space A3. In addition, because the upper seam 22 has the rising portion 35, the inclined portion 36, and the slip-out prevention portion 38, an internal space A3 surrounded by these is formed in the upper seam 22.

[0035] The engagement release portion 39 is formed by folding back the tip of the metal plate twice. For example, when the engagement between the upper seam 22 and the lower seam 21 is released, the engagement release portion 39 is moved (rotated) in a direction away from the rising portion 35. The movement of the engagement release portion 39 causes the slip-out prevention portion 38, the engagement release portion 39, and the bent portion 40 to move away from the movement trajectory of the lower seam 21' relative to the upper seam 22.

[0036] In the rising portion 35 of the upper seam 22 described above, a rib 42 is provided at the center in the height direction of the upper seam 22 (Z-axis direction in FIG. 3 ), protruding toward the main body 11. The rib 42 extends along the inter-beam direction of the roofing material 10 (Y-axis direction in FIG. 3 ). Here, when viewed from the front of the roofing material 10, the rib 42 has a shape made up of a combination of multiple arcs. Note that the shape of the rib 42 when viewed from the front is not limited to a shape made up of a combination of multiple arcs, and it may also be a shape made up of a single arc or a shape made up of a combination of multiple arcs and straight lines. Furthermore, the shape of the rib 42 when viewed from the front may be a substantially triangular shape or a substantially rectangular shape.

[0037] The protrusion 42 functions to improve the strength of the upper seam 22. Furthermore, as shown in FIG. 4 , the protrusion 42 functions to prevent the bolt 52 from moving upward when the installation fitting 51 is secured to the fitting portion between the bottom seam 21' of the roofing material 10' and the top seam 22 of the adjacent roofing material 10. Hereinafter, the fitting portion 55 between the bottom seam 21' of the roofing material 10' and the top seam 22 of the roofing material 10 may be referred to as the seam fitting portion 55. The installation fitting 51 described above is a component that is secured to the seam fitting portion 55 when installing other equipment, such as a power generation system or an air conditioning system, on the roof. The installation fitting 51 is secured to the seam fitting portion 55 by abutting the tip of the bolt 52 against the rising portion 35 of the seam fitting portion 55.

[0038] The number of ridges 42 provided on the rising portion 35 does not need to be limited to one; for example, two or more ridges can be provided at a predetermined interval in the height direction of the roofing material 10. As shown in Fig. 5, if, for example, two ridges 43, 44 are provided, when fixing the installation fitting 51 to the seam fitting portion 55, it is preferable that the bolt 52 for the installation fitting abuts against the rising portion 35 of the upper seam 22 between the two ridges 43, 44. Furthermore, if three or more ridges are provided, it is preferable that the bolt 52 for fixing the installation fitting 51 abuts against the rising portion 35 of the upper seam 22 between two adjacent ridges.

[0039] Next, we will explain an example of arranging three roofing materials 10 when roofing a standing flat roof 200. As shown in Figure 6, of the three roofing materials, the roofing material laid on the left side will be marked with "'" and the roofing material laid on the right side will be marked with "". Here, roofing material 10' corresponds to the second roof-constituting member set forth in the claims, and roofing material 10" corresponds to the first roof-constituting member set forth in the claims.

[0040] For example, three roofing materials 10, 10', 10" are laid on the top surface of the sheathing boards 61 in the order of roofing material 10', roofing material 10, roofing material 10". At this time, each roofing material 10, 10', 10" is laid on the sheathing boards 61 so that the longitudinal direction of each roofing material 10, 10', 10" is along the direction between the beams. Here, the roofing materials 10, 10', 10" may be laid directly on the top surface of the sheathing boards 61, or may be laid on the top surface of an underlayment material laid on the top surface of the sheathing boards 61.

[0041] 7 to 10, when the roofing material 10' is laid on the top surface of the sheathing board 61, the fixing portion 26' provided on the bottom seam 21' of the roofing material 10' is fixed to the sheathing board 61 with a base screw 62. Thereafter, the roofing material 10 is laid on the top surface of the sheathing board 61 so as to be adjacent to the roofing material 10'.

[0042] When roofing material 10 is laid on top of sheathing boards 61, the upper seam 22 of roofing material 10 is placed over the lower seam 21' of roofing material 10'. At this time, the lower seam 21' is inserted into the narrowed portion 41 of the upper seam 22. As the lower seam 21' is inserted into the narrowed portion 41 of the upper seam 22, the engagement release portion 39 of the upper seam 22 comes into contact with the sliding contact portion 27' of the lower seam 21'. In this state, the upper seam 22 is pressed toward the lower seam 21' (in the direction F in Figure 8).

[0043] When the upper seam 22 is pressed toward the lower seam 21', the engagement-releasing portion 39 of the upper seam 22 rotates in a direction away from the lower seam 21' (in the direction C1 in FIG. 8) while being in sliding contact with the sliding contact portion 27' of the lower seam 21'. At this time, the engagement-releasing portion 39 of the upper seam 22 is pressed against the sliding contact portion 27' of the lower seam 21', so the sliding contact portion 27' and the locked portion 28' of the lower seam 21' rotate toward the rising portion 25' (in the direction C2 in FIG. 8). The sliding contact portion 27' and the locked portion 28' of the lower seam 21' rotating toward the rising portion 25' (in the direction C2 in FIG. 8) are stopped when the tip of the locked portion 28' abuts against the rising portion 25' (see FIG. 9).

[0044] Even after the rotation of the sliding contact portion 27' and the locked portion 28' of the lower seam 21' has stopped, the upper seam 22 is pressed toward the lower seam 21'. Therefore, as shown in Figure 9, the engagement releasing portion 39 of the upper seam 22 rotates in a direction away from the lower seam 21' (in the direction C1 in Figure 9) while being in sliding contact with the sliding contact portion 27' of the lower seam 21', even after the rotation of the sliding contact portion 27' and the locked portion 28' of the lower seam 21' has stopped.

[0045] When the engagement-releasing portion 39 of the upper seam 22 reaches the lower end of the sliding contact portion 27' of the lower seam 21', the sliding contact between the engagement-releasing portion 39 and the sliding contact portion 27' is released, and the engagement-releasing portion 39 returns to its original position due to the restoring force acting on the upper seam 22. In addition, the pressure applied to the lower seam 21' by the upper seam 22 is released, so the sliding contact portion 27' and the locked portion 28' of the lower seam 21' return to their original positions due to the restoring force acting on the lower seam 21'.

[0046] As a result, as shown in Figure 10, the upper seam 22 of roofing material 10 is fitted into the bottom seam 21' of roofing material 10'. When the upper seam 22 of roofing material 10 is fitted into the bottom seam 21' of roofing material 10', the rising portion 25', sliding contact portion 27' and locking portion 28' of the bottom seam 21' are housed in the internal space A3 (see Figure 7) surrounded by the rising portion 35, inclined portion 36 and slip-out prevention portion 38 of the upper seam 22. Finally, the fixing portion 26 of roofing material 10 is fixed to the sheathing board 61 with a base screw.

[0047] After the roofing material 10 is laid on top of the sheathing boards 61, the roofing material 10" is laid on top of the sheathing boards 61. At this time, the upper seam 22" of the roofing material 10" is fitted into the lower seam 21 of the roofing material 10 in the same procedure as the upper seam 22 of the roofing material 10 is fitted into the lower seam 21' of the roofing material 10'.

[0048] As shown in Figure 10, when the upper seam 22 of roofing material 10 and the lower seam 21' of roofing material 10' are fitted together, a space A4 is formed inside the upper seam 22 and above the lower seam 21'. For example, water that seeps in from the tip of the upper seam 22 due to wind pressure or capillary action is prevented from entering further by the space A4 and is instead discharged downward. In addition, a narrowed portion 41 is provided in the lower seam 21' between the tip of the engaged portion 28' and the rising portion 25'. Therefore, water that has seenp in into the space A4 is discharged downward through the narrowed portion 41.

[0049] As shown in FIG. 11, when releasing the engagement between the bottom seam 21' of the roofing material 10' and the top seam 22 of the roofing material 10, first, the engagement portion 71a of a dedicated jig 71 is inserted between the long edge portion 11a' of the roofing material 10' and the engagement release portion 39 of the top seam 22 of the roofing material 10. Then, the jig 71 is rotated in the direction C5 in FIG. 11 around fulcrum P1. The outer surface 72 of the engagement portion 71a of the jig 71 is shaped as a combination of two flat surfaces 72a and 72b. That is, the engagement portion 71a rotates in the direction C5 in FIG. 11 around point P1 as a fulcrum, and then the fulcrum switches from point P1 to point P2. When the jig 71 is rotated in the direction C5 in FIG. 11, the jig 71 finally rotates around point P2 as a fulcrum. At this time, in the girder direction, the fulcrum P2 of the jig 71 is located closer to the center of the main body 11 than the bottom seam 21'. Therefore, by rotating the jig 71 in the C5 direction in Figure 11, the engagement between the bottom seam 21' of the roof material 10' and the top seam 22 of the roof material 10 can be released.

[0050] For example, when roofing material 10' or roofing material 10 is laid on sheathing boards 61, a negative pressure load may act on roofing material 10. As shown in FIG. 12, when a negative pressure load acts on roofing material 10, main body 11 of roofing material 10 moves upward (direction H in FIG. 12). The upward movement of main body 11 of roofing material 10 pulls rising portion 35 of upper seam 22 in direction I in FIG. 12. When rising portion 35 of upper seam 22 is pulled in direction I in FIG. 12, inclined portion 36 and slip-out prevention portion 38 of upper seam 22 press against sliding contact portion 27' and locked portion 28' of lower seam 21'.

[0051] As a result, the sliding contact portion 27' and the locked portion 28' of the lower seam 21' rotate toward the rising portion 25' (in the direction C2 in FIG. 12). The rotation of the locked portion 28' is stopped when the tip of the locked portion 28' abuts against the rising portion 25' (see FIG. 13).

[0052] As described above, the bottom seam 21' of the roofing material 10' is formed by folding back the metal sheet twice at two different locations at the folded back portion 24. Therefore, the locked portion 28' is held in place with its tip abutting against the rising portion 25'.

[0053] Because the strength of the bent portion between the folded portion 24 and the fixed portion 26 is weaker than that of the double-layered folded portion 24, when the slip-out prevention portion 38 of the upper seam 21' presses against the locked portion 28', the rising portion 25' tilts in the direction C6 in Figure 13. While the lower seam 21' tilts in the direction C6 in Figure 13, the slip-out prevention portion 38 of the upper seam 22 remains locked to the locked portion 28'. Therefore, even if a negative pressure load acts on the roofing material 10, the engagement between the lower seam 21' and the upper seam 22 will not be released and the engagement will be maintained.

[0054] As shown in Figure 14, when a negative pressure load acts on roofing material 10, a negative pressure load may also act on roofing material 10'. In such a case, main body 11' and long edge 11a' of roofing material 10' also move upward (direction H in Figure 14). Therefore, bottom seam 21' is pulled in direction K in Figure 14. As described above, the tip of interlocking portion 28' of bottom seam 21' abuts against rising portion 25'. Therefore, when long edge 11a' of roofing material 10' moves upward, one piece 24a' of folded portion 24' bends from the tip of interlocking portion 28 of bottom seam 21' as a base point (see Figure 15). As one piece 24a' of the folded portion 24' bends from the tip of the engaging portion 28 of the bottom seam 21' as a base point, the one piece 24a' of the folded portion 24' abuts against the engagement release portion 39 of the top seam 22. This prevents the long edge 11a' of the roofing material 10' from lifting up. As a result, the engagement between the bottom seam 21' and the top seam 22 is maintained.

[0055] In this embodiment, a protrusion 42 is provided on the rising portion 35 of the upper seam 22. On the other hand, since the lower seam 21 has a double structure, no protrusion is provided on the rising portion 25. However, as shown in Figure 16, it is also possible to provide a protrusion 81 on one piece 24a of the folded portion 24 that forms the rising portion 25.

[0056] Furthermore, in addition to providing a protrusion 81 on one piece 24 a of the folded portion 24 that forms the rising portion 25 , the tip of the locked portion 28 may be made to abut against the rising portion 25 . <Summary of effects>

[0057] According to the present invention, for example, when two adjacent roofing materials 10, 10' are joined together, if the roofing material 10 is lifted due to the action of a negative pressure load, the protrusion 42 provided on the rising portion 25 of the upper seam 22 makes the upper seam 22 less likely to deform, and the fit between the upper seam 22 of the roofing material 10 and the bottom seam 21' of the roofing material 10' is maintained. Furthermore, because the bottom seam 21' has a double structure, even if the upper seam 22 is pulled when the roofing material 10 is lifted due to the action of a negative pressure load, the bottom seam 21' that fits into the upper seam 22 is less likely to deform. As a result, the fit between the upper seam 22 of the roofing material 10 and the bottom seam 21' of the roofing material 10' can be maintained.

[0058] Furthermore, for example, when two adjacent roof materials 10, 10" are joined together, and the roof material 10 is lifted up due to the action of a negative pressure load, the tip of the interlocking portion 28 abuts against one piece 24a of the folded portion 24 that constitutes the rising portion 25. In this state, the piece 24a is bent using the point where the tip of the interlocking portion 28 abuts against the piece 24a of the folded portion 24 as a fulcrum. However, even if the piece 24a is bent, the state in which the anti-slip portion 38 is interlocked with the interlocking portion 28 continues to be maintained, so the fitted state between the bottom seam 21 of the roof material 10 and the top seam 22" of the roof material 10" can be maintained.

[0059] Furthermore, an installation fitting 51 for installing other equipment is fixed to the upper seam 22 using a bolt 52, and the bolt 52 abuts against the rising portion 25 at a position lower than the ridge 42 in the height direction of the rising portion 25, so that even if the bolt 52 loosens, the bolt 52 is prevented from moving in the height direction of the rising portion 35 toward the upper part of the ridge 42. As a result, the installation fitting 51 fixed to the upper seam 22 is prevented from falling off or the position of the rising portion 35 in the height direction is prevented from shifting. [Explanation of symbols]

[0060] 10 Vertical roofing materials (roofing materials) 11 Main body 11a,11b Long edge (edge) 21 Lower 22 Upper sea bream 24 Folding part 25 Rising portion (first rising portion) 27 sliding contact portion (first inclined portion) 28 Locked portion (first extension portion) 35 Rising section (second rising section) 36 Inclined section (second inclined section) 38 Slip prevention portion (second extension portion) 39 Unmating portion (third inclined portion) 40 Bend section 41 Constriction (void) 42,43 protrusion 51 Installation hardware 52 Bolt (fixture) 100 Tatehira-buki roof

Claims

1. A vertical roofing material made from metal plates, comprising: a main body having a pair of long edge portions extending along the beam direction; a bottom seam connected to one of the pair of long edge portions; and an top seam connected to the other long edge portion, wherein a fitting portion provided on a first roof component adjacent to the one long edge portion can be fitted into the bottom seam, and a fitted portion provided on a second roof component adjacent to the other long edge portion can be fitted into the top seam, The lower seam has a double structure in which a folded portion obtained by folding back one end of the metal plate in a girder direction perpendicular to the beam direction is folded back in the same direction at different positions, the bottom seam has a first rising portion standing upright from the one long edge portion, a first inclined portion inclined downward from an upper end of the first rising portion toward the main body portion, and a first extending portion extending from a lower end of the first inclined portion toward the first rising portion, The upper seam has a structure in which the other end of the metal plate in the girder direction is bent multiple times, a second rising portion extending from the other long edge portion in the same direction as the first rising portion; a second inclined portion sloping downward from the upper end of the second rising portion toward the outside of the main body portion; a second extension portion extending from the lower end of the second inclined portion toward the second rising portion; a third inclined portion sloping downward from the lower end of the second extension portion toward the outside of the main body portion; an internal space surrounded by the second rising portion, the second inclined portion, and the second extension portion, into which the fitting portion provided on the second roof component is inserted; and a protrusion provided on the second rising portion, extending along the extension direction of the second rising portion, and protruding toward the main body portion.

2. The upper seam has a gap communicating with the internal space, the gap having a width in the girder direction narrower than the maximum width of the fitted portion provided on the second roof component, between the bent portion provided between the second extension portion and the third inclined portion and the second rising portion, the gap is expanded by the fitted portion of the second roof component pressing against the third inclined portion during the process of inserting the fitted portion of the second roof component into the internal space, A vertical roofing material as described in claim 2, characterized in that the second extension portion engages with the engaging portion provided on the second roof component when the engaging portion provided on the second roof component is inserted into the internal space.

3. An installation bracket for installing other equipment is fixed to the upper seam using a fixture, 2. The vertical roofing material according to claim 1, wherein the fastener is abutted against the first rising portion at a position lower than the protrusion in the height direction of the first rising portion.

4. the protrusions are provided at two or more locations at predetermined intervals in a height direction of the first rising portion, The vertical roofing material according to claim 3, characterized in that the fixing device is abutted against the first rising portion between the protrusions each provided at a predetermined interval in the height direction of the first rising portion.

5. a tip end of the first extending portion is held at a position spaced a predetermined distance from the first rising portion; The vertical roofing material as described in claim 1, characterized in that when the first inclined portion is pressed by the fitting portion provided on the first roof component, the tip of the first extension portion rotates toward the first rising portion and abuts against the first rising portion, and the first inclined portion and the first extension portion rotate toward the first rising portion.

6. The vertical roofing material according to claim 1, characterized in that the fitting portion provided on the first roof component is an upper seam of another vertical roofing material adjacent to the main body portion on the other long edge side.

7. The vertical roofing material according to claim 1, characterized in that the engaging portion provided on the second roof component is a bottom seam of another vertical roofing material adjacent to the main body portion on the side of the one long edge portion.

8. A vertical roof is formed by arranging a plurality of vertical roofing materials according to any one of claims 1 to 7 in the girder direction and connecting adjacent vertical roofing materials together.

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