JP2000220255A - Roofing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a swell of a roof face at an overlap part of folded parts to improve appearance and to ensure waterproofness. SOLUTION: Roofing 1 with crest parts and trough parts continuously formed in the width direction M is provided with a support piece of almost inverted U-shape cross section at one end in the width direction M, and a connecting piece of almost inverted U-shape cross section supported by the support piece from below, at the other end. A first folded part 6 is provided over the whole length of an eaves side end 1a, and a second folded part 7 is provided over the whole length of one side end 1b orthogonal to the eaves side end 1a. Eaves side cutout parts 10, 11 cut out in an overlap part of the first folded part 6 and second folded part 7 are formed at both lateral ends at least on the eaves side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a roofing material, and more particularly to a technique for improving the appearance of a connection portion between adjacent roofing materials.

[0002]

2. Description of the Related Art Conventionally, for example, as shown in FIG.
A support piece 4 having a substantially U-shaped cross section is provided at one end in the width direction M of the roofing material 1 in which a crest 2 and a valley 3 are continuously formed in the width direction M, and a substantially U-shaped cross section is provided at the other end. There is known a structure of a roofing material 1 in which a U-shaped connecting piece 5 is provided, and a connecting piece 5 of another roofing material 1 is superimposed on a supporting piece 4 of one roofing material 1 adjacent in the width direction M. Have been.

[0003]

By the way, two adjacent sides of the four sides of the roofing material 1 are generally provided with folded portions 6 and 7 for edge prevention. At the two corners, as shown in FIG. 27C, the overlapping portions 9 of the folded portions 6 and 7 have a thickness of four roofing materials 1 and, therefore, the roofing materials 1 and 1 arranged on the eaves.
Between them, the overlapped portion of the support piece 4 and the connection piece 5 (portion A in FIG. 26) becomes thick and rises upward. On the other hand, between the roofing materials arranged on the middle side, the thickness of the overlapped portion (b in FIG. 26) of the connecting piece 5 and the supporting piece 4 of the four roofing materials 1 adjacent to the front, rear, left and right is further increased. As a result, there is a problem that unevenness due to the swelling occurs on the roof surface and the appearance is impaired. Further, there is a problem in the waterproof surface that rainwater infiltrates due to a gap formed between the support piece 4 and the connection piece 5 due to the swelling.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to prevent the roof surface from rising due to the overlapping portion of the folded portion, to improve the external appearance, and to improve the waterproofness. Another object of the present invention is to provide a structure of a roofing material that can secure the roofing material, and another object of the invention is to provide a structure of the roofing material that can improve the strength of a connecting piece and prevent the connection piece from rising. However,
Another object of the present invention is to provide a structure of a roofing material capable of improving the heat resistance and the weather resistance of the roofing material. Another object of the present invention is to provide a roofing structure that can easily prevent rainwater from entering the core material. Another object of the present invention is to provide a structure of a roofing material capable of improving appearance and strength.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to an end portion of a roofing material 1 in which a peak portion 2 and a valley portion 3 are formed continuously in the width direction M. The cross section is almost inverted U
A support piece 4 having a substantially U-shaped cross section is provided at the other end of the support piece 4 and supported by the support piece 4 from below. Is a structure of a roofing material in which the connection piece 5 of the other roofing material 1 is overlapped on the upper side of the roofing material, and a first folded portion 6 is provided over the entire length of the eaves side end 1a of the roofing material 1. , Eaves end 1
A second folded portion 7 is provided over the entire length of one side end 1b orthogonal to a, and at least at both left and right ends of the eaves side P,
Eave-side cutouts 10 and 11 are formed by cutting out an overlapped portion 9 of the first folded-back portion 6 and the second folded-back portion 7. By forming the side cutouts 10 and 11, even when the supporting piece 4 of one roofing material 1 and the connecting piece 5 of the other roofing material 1 adjacent to each other on the eaves side P are vertically overlapped, as in the conventional case. The swelling due to the superimposed portion 9 does not occur, the appearance of the roofing material 1 on the eaves side P can be improved, and the infiltration of rainwater due to the swelling can be prevented.

The front edge 13 of the eave-side notch 10 provided on the connection piece 5 is connected to the eave-side notch 1 provided on the support piece 4.
It is preferable that the notch dimensions d ₁ , d ₂ of the notches 10, 11 on both sides be different so as to protrude more toward the eave side P than the front edge 14 of the _first piece 1. In a state where the pieces 5 are overlapped, the rainwater flowing down on the connecting piece 5 does not enter the gap between the connecting piece 5 and the supporting piece 4 from the front edge 13 of the eaves-side cutout 10 of the supporting piece 4 without lowering. Can run down. Therefore, the waterproof property can be enhanced while the roof material 1 has a structure in which a part of the eave-side end 1a is cut out.

A substantially L-shaped cutout is formed along a ridge-side corner formed by one side end 1b provided with the second folded portion 7 and a ridge-side end 1c orthogonal thereto. Preferably, a ridge side notch 12 is formed, in which case
When arranging a plurality of roofing materials 1 in the eave ridge direction N,
When the front end of the roofing material 1 on the ridge side Q is superimposed on the rear end portion of the roofing material 1 on the eave side P, it is possible to prevent the ridge side notch 12 from generating a bulge, and the ridge side Q In this case, the appearance of the roofing material 1 can be improved, and the ridge side notch 12 can improve the connection with the outer wall of the upper floor.

It is preferable that a concave portion 23 having a substantially U-shaped cross section is formed in the upwardly inclined portion 19 of the connection piece having a substantially inverted U-shaped cross section over substantially the entire length of the connecting piece 5. In this case, About U
The strength of the connecting piece 5 can be easily increased by the character-shaped constricted portion 23.

The roofing material 1 is constituted by a sandwich panel in which a core material 26 is interposed between two upper and lower outer skins 24 and inner skin 25, and at least the entire lower surface 1d is formed in a flat shape. In this case, preferably, the core material 26 improves the heat insulation and fire resistance and the weather resistance of the roofing material 1, and the flatness of the lower surface 1d improves the airtightness with the roof base material.

It is preferable to provide a rising portion 27 which rises along the outer end surface of the core material 26 at the end of the inner skin 25. In this case, rainwater has supposedly entered the lower surface 1d side of the roofing material 1. Even in the case, the rising portion 27 of the endothelium 25
By using the above, it is possible to prevent infiltration into the core material 26.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described. As shown in FIG. 25, a roof material 1 has a plurality of peaks 2 having a substantially inverted U-shaped cross section at a plurality of positions in a width direction M. Has been established,
A flat valley 3 is formed between the peaks 2. In this example, the lower surface 1d is constituted by a sandwich panel in which a core material 26 is interposed between the upper and lower outer skins 24 and the inner skin 25.
The whole is formed in a planar shape. Further, on the upper surface of the roofing material 1, for example, 6
Up to seven steps 30 are formed. The step 30
Is not particularly limited. Here, the step portion 30 is formed in a horizontal line over the entire length including the peak portions 2, the respective valley portions 3, the connection pieces 5, and the support pieces 4 of the roofing material 1.
Thus, the roofing material 1 having a large size can be given a feeling of small splitting to enhance the appearance, and at the same time, the panel strength can be increased.

A support piece 4 having a substantially inverted U-shaped cross section is provided at one end of the outer cover 24 in the width direction M, and the support piece 4 is provided at the other end.
Is provided with a connection piece 5 having a substantially inverted U-shaped cross section, which is supported from below, and when a plurality of roofing materials 1 are installed in the width direction M, the connecting piece 5 of the adjacent one of the roofing materials 1 has the other. The connecting piece 5 of the roofing material 1 can be supported. The materials of the outer skin 24 and the inner skin 25 are not particularly limited, and examples thereof include a galvanized steel sheet, an aluminum sheet, an aluminum zinc alloy-plated steel sheet, a stainless steel sheet, a titanium steel sheet, a metal sheet colored with a general paint, A material coated with a vinyl resin, an acrylic film, a fluororesin, or the like can be used.

FIG. 5 shows an example of the layout of the roofing materials 1A, 1B, 1C and 1D. In this example, roofing materials 1A and 1B (FIGS. 2A and 2B) arranged on the eaves side P,
It has a roofing material 1C (FIG. 2 (c)) arranged on the middle side and a roofing material 1D (FIG. 2 (d)) arranged on the ridge side Q. The roofing material 1A on the eaves side P is a so-called roofing material without longitudinal joints, which is arranged at the eaves. The roofing material 1B on the eaves side P is
It is placed at the eaves, and the roofing material 1C or the roofing material 1
This is a roofing material with a so-called rear longitudinal joint in which either one of D is arranged. The roofing material 1C on the intermediate side is a roofing material having a so-called vertical joint, in which a roofing material 1B is disposed at a front portion and a roofing material 1D (or an outer wall 31 on the second floor) is disposed at a rear portion. The roofing material 1D on the ridge side is a roofing material 1C
Are arranged, and no roofing material is arranged at the rear, that is, a roofing material with a so-called lower longitudinal joint. Of course, the layout of the roofing materials 1A to 1D is not limited to the example of FIG.

As shown by broken lines in FIGS. 1 and 2 (a) to 2 (d), each of the roofing materials 1A to 1D has a first folded back over the entire length of the eave-side end 1a of the outer cover 24. A portion 6 is provided, and a second folded portion 7 is provided over the entire length of one side end 1b orthogonal to the eaves side end 1a.

As shown in FIGS. 1A, 1B, 2A, and 6 to 10, in the roof material 1A without vertical joints arranged at the eaves, the left and right sides of the eaves side P are arranged as shown in FIGS. An overlapping portion 9 of the first folded portion 6 and the second folded portion 7 at both ends.
Are cut out in a substantially rectangular shape. The eave-side cutouts 10 and 11 are formed by precutting before providing the folded portions 6 and 7, and when the connection piece 5 is superimposed on the support piece 4, the overlapping portion 9 is It works to prevent swelling. In this example, the cutouts 1 on both sides of the eaves are used.
The notch dimensions d ₁ and d ₂ of 0 and 11 are different. For example, as shown in FIG. 3 (a), the folded front eaves-side notch eaves ridge direction N dimensions D _1, for example 25mm of 10, eaves-side notch portion 11 based building direction N of the dimension D _2, for example 27mm of Then, as shown in FIG. 3 (b), the eave-side end 1a is folded over a predetermined length d ₃ (for example, 12 mm) over its entire length, and the one-side end 1b is turned over a predetermined length d over its entire length. Fold it back at ₄ (for example, 12 mm). As a result, the protrusion dimension d ₁ of the eave-side end 1a in the eave ridge direction N (FIG. 1A)
Is 13 mm, and the protruding dimension d ₂ (FIG. 1B) of the one end 1b in the eaves ridge direction N is 15 mm. This allows
When the connection piece 5 of the other roofing material 1A is superimposed on the support piece 4 of one roofing material 1A as described later, an eave-side cutout formed on the connection piece 5 side (upper side). Eaves side notch 1 in which front edge 13 of 10 is arranged on support piece 4 side (lower side)
1 protrudes more toward the eaves side P than the front edge 14, the front edge 13 serves as an eave, and the rainwater flowing on the connection piece 5 flows into the gap between the connection piece 5 and the support piece 4. It is designed to prevent intrusion. Of course, the notch dimensions of the eave-side cutouts 10 and 11 and the turnback dimensions of the eave-side end 1a and the one-side end 1b are not limited to the above numerical values.

Next, as shown in FIGS. 2 (b), 11 and 12, in the roof material 1B having a rear longitudinal joint disposed at the eaves, the first and second ends of the eaves side P are provided with the first eaves. Eave-side cutouts 10 and 11 are formed by cutting a superimposed portion 9 of the folded-back portion 6 and the second folded portion 7 into a substantially rectangular shape, respectively, and are diagonally opposite to one end of the eave-side P. At one end of the ridge side Q, a substantially L-shape is formed along a ridge side corner formed by one side end 1b provided with the second folded portion 7 and a ridge side end 1c orthogonal thereto. A ridge-side notch 12 (FIG. 1 (c)) is formed. The ridge-side cutouts 12 are pre-cut, similarly to the eaves-side cutouts 10 and 11, before the folded portions 6 and 7 are provided. In the roof material 1B with the rear vertical joint, the second floor is cut out in a substantially L shape in order to improve the connection with the outer wall 31.

Next, as shown in FIGS. 13 to 17, in the roof material 1C having vertical vertical joints disposed on the middle side, a first folded portion 6 is provided at one end of the eave side P. An eaves-side notch 10 (FIG. 1 (a)) is formed by cutting the overlapped portion 9 with the second turned-up portion 7 into a substantially rectangular shape, and a turned-up portion is provided at the other end of the eaves side P. Other side end 1b not
Along the eaves-side corner between the eaves-side end 1a and
An eave-side notch 11 (FIG. 1 (c)) which is cut out in a letter shape is formed, and the other end of the eave-side P on which the substantially L-shaped eave-side notch 11 is provided is a diagonal ridge side. At one end of Q, a substantially L-shaped portion is formed along a ridge-side corner formed by one side end 1b provided with the second folded portion 7 and a ridge-side end 1c orthogonal thereto. The cutout ridge side cutout 12 (Fig. 1
(C)) is formed.

Next, as shown in FIGS. 18 to 20, in the roofing material 1D with the lower longitudinal joint arranged on the ridge side, as shown in FIGS.
At one end of the eaves side P, an eaves side notch 10 (FIG. 1 (d)) is formed by cutting a superimposed portion 9 of the first folded portion 6 and the second folded portion 7 into a substantially rectangular shape. At the other end of the eaves side P, along the eaves side corner formed by the eaves side end 1a provided with the first folded portion 6 and the other side end 1b not provided with the folded back portion, A ridge-side notch 11 (FIG. 1 (d)) cut out in a substantially L-shape is formed.

Here, the core material 26 of the roof materials 1A and 1B is used.
As shown in FIGS. 8 to 10, the eave-side end surface 26 a is recessed toward the ridge side Q from the eave-side end 1 a of the outer cover 24 by a predetermined dimension. The eave-side end surface 26a of the core 26 is formed flat so that the appearance from the eaves side P is improved. On the other hand, the eaves-side end surface 26a of the core material 26 of the roofing materials 1C and 1D is, as shown in FIG.
The core material 26 is provided with a concave fitting portion 28 on the eave side end surface 26a and a convex fitting portion 29 on the ridge side end surface 26b. FIG.
As shown in (b), the core members 26 of the roofing material 1C can be securely fitted to each other by the fitting portions 28 and 29. These core members 26 are formed by injecting a urethane resin between the outer skin 24 and the inner skin 25 on the front and back sides, for example.

Further, all of the roof materials 1A and 1B in the eaves direction are provided.
The length L is, for example, L as shown in FIG.₁ [300
× N (N = 3 to 7: number of steps 30) mm] + L_Two(80
mm) + L_Three(40 mm) and the eaves-side end of the outer skin 24
Dimension L from 1a to eaves-side end surface 26a of core material 26_FiveIs an example
For example, 35 mm. On the other hand, size of roof materials 1C and 1D
As shown in FIG. 4 (b), the direction
Is, for example, L ₁[300 × N (N = 3 to 7: step
Number of parts 30) mm] + L_Two(80mm) + L_Three(40m
m), and the eaves of the core material 26 extend from the eave side end 1a of the outer skin 24.
Dimension L up to side end surface 26a₆Is 145mm for example
But, of course, limited to these numbers
There is no.

In each of the roofing materials 1A to 1D, before the outer skin 24 is processed (in a flat state), eave side cutouts 10 and 11 are provided at both left and right ends of the eave side P in advance. Further, the roof material 1B, 1C arranged on the intermediate side is provided with a ridge side cutout 12 at one end of the ridge side Q. Next, a folded portion 6 is formed on each of the roofing materials 1A to 1D, and thereafter, a folded portion 7, a mountain portion 2,
The support piece 4 and the connection piece 5 are formed simultaneously. This allows
When a plurality of roofing materials 1A to 1D are laid, it is possible to prevent the occurrence of swelling as in the related art. That is, in the case of the roofing materials 1A and 1B arranged at the eaves tip, the overlapping portion of the supporting piece 4 and the connecting piece 5 adjacent in the width direction (FIG. 10)
On the other hand, in the case of the roofing materials 1C and 1D arranged on the intermediate side or the ridge side, the support pieces 4 adjacent to the width direction and the eaves ridge direction can be prevented from occurring at the middle part or the ridge side. 14 and FIG. 1 and FIG.
5), it is possible to prevent the occurrence of swelling, so that the appearance of the entire roof is improved, and the infiltration of rainwater due to the swelling can be prevented.

In this embodiment, one of the adjacent roof materials 1A
When the connecting piece 5 of the other roofing material 1A is superimposed on the supporting piece 4 of the above, the front edge 13 of the eave-side notch 10 provided on the connecting piece 5 is replaced by the eave-side notch 11 provided on the supporting piece 4. Notch 1 on both eaves side so as to protrude to eaves side P from front edge 14 of
Notch dimensions d ₁ and d _{2 of} 0 and 11 (FIGS. 1A and 1B)
Since the connecting piece 5 is superimposed on the supporting piece 4, the front edge 1 of the eave-side notch 10 of the supporting piece 4 is
3 has the function of the eaves. Therefore, the rainwater that flows down onto the connecting piece 5 flows downward from the front edge 13 of the eaves side notch 10 of the supporting piece 4 without entering the gap between the connecting piece 5 and the supporting piece 4. Although it has a structure in which a part of the eave-side end 1a of the piece 4 and the connection piece 5 is cut out, it is possible to prevent infiltration of rainwater and secure waterproofness. Further, the eave-side notches 10 and 11 and the ridge-side notch 12
Are cut before the connection piece 5 and the support piece 4 are formed by roll forming, respectively, so that the connection piece 5 or the support piece 4 having a substantially inverted U-shaped cross section is crushed or deformed by the cutting process. And high quality roofing material can be obtained.

FIG. 24 shows another embodiment. this
In the example, as shown in FIG.
Dimension L of width direction M of notch 10₁Of the eaves side end 1a
Dimensions (e.g., 12 mm) and notches on the eaves side
Dimension L of eave ridge direction N of part 10 _TwoOf one side end 1b
It is longer than the size (for example, 12 mm). to this
As shown in FIG. 24 (b), the eaves side end 1a is
Prescribed dimension d over the entire length_Three(For example, 12mm)
Then, the one side end 1b is set to a predetermined dimension d over its entire length._Four(Example
For example, if it is folded back at 12 mm), FIG.
As shown in the above, the overlapping part is at the corner of the roofing material 1.
No longer occurs and swells occur as in the previous embodiment.
The effect is obtained that it can be prevented from being performed. FIG. 24
The embodiment of the present invention is not limited to the eave-side notch 10 but the ridge-side notch 11
Can be similarly applied.

Next, FIG. 22 shows a cross-sectional structure of a connection portion between adjacent roof materials 1 and 1. A fixing bracket 16 is disposed on the upper surface of the support piece 4 having a substantially inverted U-shaped cross section of one of the adjacent roof materials 1, and the fixing tool 18 is inserted into the roof base material 17 through the support piece 4 from the fixing metal 16. At the same time, the upper surface of the fixing bracket 16 is covered with the connection piece 5 having a substantially inverted U-shaped cross section. Connection piece 5
As shown in FIG. 21, the connection piece 5
A constricted portion 23 having a substantially U-shaped cross section is recessed over substantially the entire length of the connecting piece 5, and a bent portion 47 is provided at the tip of the connection piece 5. Stop 43
The constricted portion 23 provided on the upwardly inclined portion 19 of the connection piece 5 is locked on the other locking portion 44 of the fixing bracket 16. 21 is a cushion material interposed in the gap between the support piece 4 and the connection piece 5, and 41 in FIG. 22 is a fitting packing material.

Thus, the upwardly inclined portion 19 of the connecting piece 5
A constricted portion 23 having a substantially U-shaped cross section over substantially the entire length of the connection piece 5.
Is recessed, the strength of the connecting piece 5 can be increased, and the constricted portion 23 is hooked on the locking portion 44 of the fixing metal 16, so that the connecting piece 5 is only locked on the fixing metal 16. Although it is a structure, the connecting piece 5
Can be reliably prevented from rising. Therefore, it is not necessary to fix the connection piece 5 using a fixing tool or the like, and the connection piece 5 can be easily attached to the fixing metal 16 fixed to the support piece 4. At times, the connection piece 5 can be easily removed, so that the remodeling operation can be easily performed.

Further, at the time of construction, since the recess 16a is provided in the fixing bracket 16 for accommodating the head 18a of the fixing tool 18, the top 20 of the connecting piece 5 can be formed flat. There is no need to be conscious of the presence of 18, and the appearance is further improved. Further, since the entire lower surface 1d of the roofing material 1 is formed in a flat shape, the airtightness with the roof base material 17 is improved, and the trouble of processing and forming the inner skin 25 into a corrugated shape can be omitted, which is advantageous in terms of production. Becomes In addition, since rising portions 27 that rise up along the outer end surface of the core material 26 are provided at both ends of the inner skin 25, even if rainwater enters the gap between the roof material 1 and the roof base material 17, the rainwater Can be prevented from entering the inside of the core material 26, and thus the watertightness of the roofing material 1 can be enhanced by using the inner skin 25. Further, the rising portion 27 is formed with 5 to 6 wavy ribs 50 bent in a wavy shape in the left-right direction. The wavy rib 50 is formed over the entire length of the rising portion 27, and the rising portion 27 is reinforced. The number of the wave ribs 50 can be freely set.

FIG. 23 shows another example of the inner skin 25 of the sandwich panel. In the above-described embodiment, the case where the entire lower surface of the inner skin 25 is a flat surface has been described. 27 are provided upright, and a plurality of steps 51 are formed on the lower surface of the inner skin 25 at predetermined intervals. The number of the step portions 51 can be freely changed. Here, the total width L of the endothelium 25
Is, for example, 597 mm, the width L ₁ of the step portion 51 is 4
The width d ₂ of both ends of the step portion 51 is 3 mm, the central flat width d ₁ of the step portion 51 is 43 mm, the width L ₂ of the flat portion 52 is 44 mm, and the height L _{3 of the} rising portion 27 is 3 mm. Is, for example, 25 mm. These numerical values are merely examples, and can be appropriately changed according to the specifications of the sandwich panel.

In each of the above embodiments, the roof panel 1 is exemplified by the sandwich panel in which the core member 26 is interposed between the upper and lower outer skins 24 and the inner skin 25. However, the present invention is not limited to this. It is widely applied to roofs and the like. Further, the case where the step portions 30 are provided at intervals on the upper surface of the roofing material in the eaves ridge direction N is illustrated, but it is a matter of course that the entire surface may be formed flat.

[0029]

As described above, according to the first aspect of the present invention, the cross-section is substantially inverted at one end in the width direction of the roof material in which the crest and the valley are formed continuously in the width direction. A U-shaped support piece is provided, and a connection piece having a substantially inverted U-shaped cross section supported from below by the support piece is provided at the other end, and the other of the roof material support pieces adjacent to each other in the width direction is provided above the other. A structure of a roofing material in which connecting pieces of a roofing material are overlapped with each other, wherein a first folded portion is provided over the entire length of an eaves-side end of the roofing material, and one side orthogonal to the eaves-side end. A second folded portion is provided over the entire length of the end, and at least at both left and right end portions on the eave side, an eave side notch portion obtained by cutting a superposed portion of the first folded portion and the second folded portion is provided. As a result, by forming notches on both sides of the eaves side, one roof material adjacent to the eaves side was cut off. Even when the holding piece and the connecting piece of the other roofing material are vertically overlapped, there is no swelling due to the overlapping portion as in the conventional case, and the appearance of the roofing material on the eaves side can be improved. Is obtained, and furthermore, the infiltration of rainwater due to the swelling can be prevented and the waterproofness can be secured.

According to a second aspect of the present invention, in addition to the effect of the first aspect, the front edge of the eave-side notch provided in the connection piece is more eaves than the front edge of the eave-side notch provided in the support piece. The notch dimensions of the notches on both eaves are different so that they protrude to the side, so that the connecting piece is overlaid on the support piece, and the front edge of the eaves notch on the support piece functions as an eave. Will have. Therefore, since the rainwater flowing down on the connecting piece does not enter the gap between the connecting piece and the supporting piece from the front edge of the eaves side notch of the supporting piece, it will flow down,
Although it has a structure in which a part of the roofing material is cut out, it is possible to prevent infiltration of rainwater and secure waterproofness.

According to a third aspect of the present invention, in addition to the effect of the first aspect, a ridge side formed by one side end provided with the second folded portion and a ridge side end orthogonal to the one end. A ridge-side notch cut out in a substantially L-shape is formed along the corner, so when arranging the roofing material in the eaves ridge direction, the ridge is located above the rear end of the eaves-side roofing material. When the front ends of the roofing materials on the side are overlapped, it is possible to prevent the ridge-side cutout from generating a bulge, and the ridge-side cutout improves the connection with the outer wall of the upper floor.

According to a fourth aspect of the present invention, in addition to the effect of the first aspect, a substantially U-shaped cross section is provided on the upwardly inclined portion of the connection piece having a substantially inverted U-shaped cross section over substantially the entire length of the connection piece. Since the constricted portion is recessed, the strength of the connection piece can be improved, and the connection piece is locked to the support side using the constricted portion, for example, a fixing bracket for fixing the support piece to the roof base material. In this case, the connection piece can be locked to the support piece side without using the fixing tool, and the construction is extremely easy, and the connection piece can be easily removed at the time of remodeling after aging, Renovation work can also be easily performed.

According to a fifth aspect of the present invention, in addition to the effect of any one of the first to fourth aspects, a sandwich in which a core material is interposed between two upper and lower outer skins and an inner skin is provided. Since it is composed of panels and at least the entire lower surface is formed in a flat shape, the core material improves the heat insulation fire resistance and weather resistance of the roof material, and the flatness of the lower surface improves the airtightness with the roof base material. improves.

According to a sixth aspect of the present invention, in addition to the effect of the fifth aspect, a rising portion which rises along the outer end surface of the core material is provided at the end of the inner skin, so that the lower surface side of the roof material is provided. Even if rainwater infiltrates, it can be prevented from entering the inside of the core material by using the rising part of the endothelium, and the watertightness of the roof material can be improved.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention, in which (a) and (b)
Is an explanatory view of the eave-side cutout, and (c) is an explanatory view of the ridge-side cutout.

FIGS. 2A to 2D are explanatory views of an eave-side cutout and a ridge-side cutout in the above.

FIG. 3A is a plan view illustrating an eaves-side cutout before folding back, and FIG. 3B is a plan view illustrating an eaves-side notch after folding back.

FIG. 4A is a partially omitted side view of a roofing material arranged on the eaves, and FIG. 4B is a partially omitted side view of a roofing material arranged on an intermediate side or a ridge side.

FIG. 5 is a plan view illustrating an example of an arrangement layout of roof materials according to the embodiment.

FIG. 6 is a perspective view of the outer skin of the roofing material without longitudinal joints, which is disposed at the eaves of the above.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a cutaway perspective view of the roofing material of FIG. 6;

FIG. 9 is a side sectional view of the roofing material of FIG. 6;

FIG. 10 is a perspective view of the roof material of FIG. 6 in a connected state.

FIG. 11 is a perspective view of an outer skin of a roof material having a rear longitudinal joint, which is arranged at the eaves of the above.

FIG. 12 is a plan view of FIG.

FIG. 13 is a perspective view of an outer skin of a roof material having upper and lower vertical joints arranged on an intermediate side of the same.

14 (a) is a side sectional view of FIG. 13, and FIG. 14 (b) is an explanatory view of a longitudinal joint state.

FIG. 15 is a perspective view of the longitudinal joint state of FIG.

16 is a cutaway perspective view of the roofing material of FIG.

FIG. 17 is a plan view of FIG.

FIG. 18 is a perspective view of an outer skin of a roof material having a lower longitudinal joint arranged on the ridge side of the same.

FIG. 19 is a plan view of FIG. 18;

FIG. 20 is a perspective view of the longitudinal joint state of FIG. 18;

FIG. 21 is a front sectional view of the same roof material.

FIG. 22 is a cross-sectional view of a connection state between a support piece and a connection piece of an adjacent roofing material according to the first embodiment.

FIG. 23 is a side view showing another example of the endothelium of the above.

24A and 24B show another example of the folded portion of the above, wherein FIG. 24A is a perspective view illustrating an eaves side notched portion before the folded portion, FIG. 24B is a perspective view after the folded portion, and FIG.

FIG. 25 (a) is a perspective view illustrating a step portion of the same roof material, and FIG. 25 (b) is a front sectional view.

FIG. 26 is a perspective view of a conventional roofing material in an installed state.

FIG. 27 (a) is a partially omitted side view of a conventional roofing material,
(B) and (c) are perspective views explaining a turnback part.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 roof material 1a eave side end 1b side end 1c ridge side end 1d lower surface 2 crest 3 valley 4 support piece 5 connection piece 6 first folded part 7 second folded part 9 overlapping part 10,11 Eave-side cutout 12 Building-side cutout 13, 14 Front edge 16 Fixture 17 Roof base material 18 Fixture 19 Uphill slope 23 Constriction 24 Outer skin 25 Endothelium 26 Core material 27 Rising section M Width direction N Crosswise to width direction direction P eaves side Q building side d _1, d ₂ notch size

Claims (6)

[Claims] 1. A support member having a substantially U-shaped cross section is provided at one end in the width direction of a roofing material having a crest and a valley formed continuously in the width direction, and a support piece is provided at the other end. A roof material structure in which a connection piece having a substantially inverted U-shaped cross section supported from below is provided, and a connection piece of the other roof material is superimposed on a support piece of one roof material adjacent in the width direction. A first folded portion is provided over the entire length of the eave-side end of the roofing material, and a second folded portion is provided over the entire length of one side end orthogonal to the eave-side end, A roof material structure comprising: an eaves-side notch formed by cutting out an overlapped portion of a first folded portion and a second folded portion at least at both left and right end portions on the eaves side. 2. The notch dimension of both eaves-side cutouts is set such that the front edge of the eaves-side cutout provided in the connection piece projects more toward the eaves side than the front end edge of the eaves-side cutout provided in the support piece. 2. The structure of a roofing material according to claim 1, wherein the structure is made different. 3. A ridge-side notch cut out in a substantially L-shape along a ridge-side corner formed by one side end provided with a second turn-back portion and a ridge-side end perpendicular thereto. The structure of a roofing material according to claim 1, wherein a portion is formed. 4. A constricted portion having a substantially U-shaped cross section is formed in the upwardly inclined portion of the connection piece having a substantially inverted U-shaped cross section over substantially the entire length of the connection piece. Structure of the described roofing material. 5. A roofing material comprising a sandwich panel having a core material interposed between two upper and lower outer skins and an inner skin,
The structure of a roofing material according to any one of claims 1 to 4, wherein at least the entire lower surface is formed in a planar shape. 6. The structure of a roofing material according to claim 5, wherein a rising portion is provided at an end of the inner skin to rise along an outer end surface of the core material.