JPS5980855A - Loose clamp structure in loose clamped outer enclosure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a locking structure for a locking outer enclosure that has excellent workability, durability, and extremely good watertightness and strength.

BACKGROUND ART Conventionally, metal tiled stick enclosures such as roofs or walls have been constructed. As shown in solid lines in Figure 20, this tightening structure (other than the part where the partial hangers are attached) is constructed by attaching the hanging ends of the cap material to the inward apexes a and a on both sides of the architectural board (groove board). The edges and b are folded flat and crimped. Furthermore, as shown by the dotted line in FIG. 20, the tightening portion is often bent downward. In theory, watertight construction can be achieved with such tightening, but in reality, the inward apex a, a of the architectural board often undulates in the longitudinal direction, causing deformation and strain, and as a result, it is difficult to form a flat surface. If the folding and crimping process is not performed strongly, a plurality of small gaps where capillarity acts will be formed between the inward apex a and the drooping edge, resulting in the disadvantage that rainwater will easily infiltrate into the interior. In addition, because the fastening edge has an inward apex a that is wavy in the longitudinal direction, it is often exposed to rainwater and is particularly prone to corrosion, resulting in poor rust prevention treatment and halving its durability. There was a drawback.

Therefore, the present invention provides an architectural board having vertical parts I7 formed on both sides of the main plate, an upper part formed inward from the upper end of the raindrop surface part, and an edge bent in a folded shape downward from the inner end. A flat U-shaped portion of the can and knob material is provided at an appropriate interval, a top portion is formed outward from both upper ends of the flat U-shaped portion, and a portion that hangs down from both outer ends of the flat U-shaped portion is formed. Fits between adjacent building boards, and both tops and three hanging portions are placed between opposing upper parts of adjacent building boards.

It fits over both end edges, forms the base side of the drooping part into an arc shape, and folds downward to bring the upper part and the top part into close contact with each other, and the end edge and the drooping part, respectively, so that the upper part and the end edge An appropriate gap may be formed between the rain tops, and the top two rain tops may be formed to slope outward and downward, or, in the structure of the invention described above, the ends of the rain drooping portions may be connected to the vertical portion of the building board. A suitable first plate is placed between the upper part and the hanging part so as to make contact with the corner of the upper part.
In addition, in the structure of the invention described above, an arcuate portion is formed that bulges outward in a mountain shape from the lower end of the drooping portion of the camping material, and the end of the arcuate portion is connected to a vertical portion. In the configuration of the invention described above, a folded edge is formed inwardly from the outer ends of both elastic parts of the cap material, and the folded edge By forming the second gap by bringing the edge into contact with the vertical surface, workability is improved.
It has excellent durability, extremely good watertightness and strength, and eliminates the above-mentioned drawbacks.

The structure will be explained with reference to the drawings.

A is a metal construction board, in which vertical parts 2, 2 are formed on both sides of the main board 1, an upper part 3.3 is formed inward from the upper ends of the vertical parts 2, 2, and the upper part 3.3 is formed inwardly from the upper ends of the vertical parts 2, 2. An end edge 4° 4 bent in a folded manner is provided below the inner end of 3 (first
(See Fig. 7, Fig. 13, etc.). from the top 3 to the edge 4
It is bent into a substantially arc shape. The main plate 1 may be simply formed into a flat plate shape (see FIGS. 1 to 7).
, or a relatively high bottomed ■-shaped portion 1a in the middle thereof.
may be formed (see Figure 13, etc.).

In the case of forming the plate into a flat plate shape, as shown in FIG. 1, continuous formation of low-height ribs perpendicular to the longitudinal direction to form a corrugated shape is also included. A construction board having a flat main plate 1 is referred to as a flat plate type. In addition, the bottomed V-shaped portion 1a
The architectural board A having the main board 1 on which is formed is referred to as a folding type. Each of the architectural boards A has a main board 1 vertical parts 2, 2
It is composed of an upper part 3° and 3 edges 4, 4, and is formed by integrally forming a long metal plate using multi-stage upper and lower forming rolls. B is a long cap material made of metal, and there are several examples, and the cap material B of the first example has a flat U-shape as shown in FIGS. 4, 9, and 16. A top portion 6.6 is formed outwardly from both upper ends of the portion 5, and a hanging portion 7.7 is provided from both valve ends. Cap material B of the second embodiment
Figure 5.

As shown in FIGS. 10 and 17, apexes 6, 6 are formed outwardly from both upper ends of the flat U-shaped portion 5, and drooping portions 7, 7 are provided from both valve ends. The end of portion 7.7 is slightly curved outwardly in an arc. The cap material B of the third embodiment has a top portion 6.6 extending outward from both upper ends of the flat U-shaped portion 5, as shown in FIGS. 1 to 3, FIG. 11, and FIG.
is formed, and a hanging portion 7.7 is provided from both valve ends,
Arcuate portions 8, 8 bulge outward from the lower end of the drooping portion 7.7 into a mountain shape and are bent. As shown in FIGS. 6 and 12 to 14, the cap material B of the fourth embodiment has top portions 6.6 formed outwardly from both upper ends of the flat U-shaped portion 5, and both valves. A drooping portion 7.7 is provided from the end, and an arcuate portion 8.8 that bulges outward in a mountain shape from the lower end of the drooping portion 7.7 is bent and formed, and both elastic portions 8.8 A folded end edge 9.9 is bent inwardly from the outer end. At this time, an appropriate gap is formed between the arcuate portion 8 and the folded end edge 9.

First, as shown in FIG. 4 and FIG. The flat U-shaped part 5 of the cap material B (see FIG. 9) of the first embodiment is fitted into the gap between the adjacent building boards A, and Architectural board A adjacent to the top part 6.6 and both hanging parts 7.7.

The base side of the hanging portion 7 is folded downward and crimped onto the back surface of the edge 4. At this time, the upper part 3 and the top part 6 are brought into close contact with the edge 4 and the hanging part 7, respectively, and an appropriate gap 10 is created between the upper part 3 and the end edge 4.
The rain upper part 3.3 and both top parts 6.6 are formed to be inclined outwardly and downwardly. At this time, it goes without saying that the end edge 4 and the hanging portion 7 are also formed to be inclined outwardly and downwardly.

Next, as for the fastening structure of the fastening outer enclosure of the second embodiment, as shown in FIG. 5 and FIG. The flat U-shaped part 5 of the cap material B (see FIG. 10) of the second embodiment is fitted into the gap between the adjacent architectural boards A, A, and the architectural board A adjacent to the top portions 6, 6 and the hanging portions 7.7.

The base side of the hanging portion 7 is folded downward and crimped onto the back surface of the edge 4. At this time, the upper part 3 and the top part 6 are brought into close contact with the edge 4 and the hanging part 7, respectively, and the end of the hanging part 7 is placed at the corner of the vertical part 2 and the upper part 3 of the construction board A. so that it comes into contact with the upper part 3
An appropriate first gap 11 is formed between the and the hanging portion 7,
The rain upper part 3.3 and both top parts 6.6 are formed to be inclined outwardly and downwardly. At this time, the end edge 4 and the hanging portion 7 are also formed to have a steeper slope than the upper portion 3 and the top portion 6.

Next, as the locking structure of the locking envelope of the third embodiment, as shown in FIGS. 1, 2, and 18, the construction board A,
A at an appropriate interval (width of flat U-shaped portion 5 of cap material B)
The flat U-shaped part 5 of the camping material B (see Fig. 11) of the third embodiment is fitted into the space between the adjacent building boards A, and the top part 6.6 The hanging portions 7, 7, etc. are fitted onto the opposing rain tops 3.3 of the adjacent architectural boards A, A, and the base side of the hanging portion 7 is folded downward and crimped to the back surface of the edge 4. At this time, the upper part 3 and the top part 6 are brought into close contact with the edge 4 and the hanging part 7, respectively, and the corners of the hanging part 7 and the arc part 8 are brought into contact with the vertical part 2 of the building board A. A suitable first gap 11 is formed between the upper part 3 and the hanging portion 7, and the ends of the arcuate portion 8 are brought into contact with the two surfaces of the vertical portion. The vertical portion 2 and the arcuate portion 8 are in contact with each other.
A second cavity 12 is formed in between. The top portions 6.6 of both the rain upper portions 3, 3 are formed to be inclined outwardly and downwardly.

At this time, the end edge 4 and the hanging portion 7 are also formed to have a steeper slope than the upper portion 3 and the top portion 6.

Next, the tightening structure of the tightening envelope of the fourth embodiment is as follows:
As shown in FIG. 6, FIG. 13, and FIG. 14, the construction boards A and A are placed side by side at an appropriate interval (the width of the flat U-shaped portion 5 of the camping material B), and the fourth embodiment Cap material B (first
(see Figure 2), the flat U-shaped portion 5 of the adjacent construction board A,
A, and the top part 6.6 and both hanging parts 7, 7, etc. are fitted into the adjacent architectural boards A, the opposing rain tops 3, 3 of A, and the base side of the hanging part 7. Fold it downward and press it to the back side of the edge 4. At this time, the upper part 3 and the top part 6 are connected to the edge 4
and the hanging portion 7 are brought into close contact with each other, and the corners of the hanging portion 7 and the arcuate portion 8 are connected to the vertical portion 2 and the upper portion 3 of the architectural board A.
A suitable first gap 11 is formed between the upper part 3 and the hanging part 7, and the folded edge 9 is brought into contact with the two vertical parts. A second gap 12 is formed between the vertical portion 2 and the folded edge 9 of the arcuate portion 8. The rain upper part 3.3 and both top parts 6.6 are formed to be inclined outwardly and downwardly. At this time, the end edge 4 and the hanging portion 7 are also formed to have a steeper slope than the upper portion 3 and the top portion 6.

The above fastening structure is a partial hanger C! This is a fastening structure in a fastening enclosure other than the attachment point, and in order to actually construct a fastening outer enclosure such as a wall or roof, it is necessary to attach it to the partial hanger C1 etc. First, the partial hanger C1 and its necessary members, peripheral members, etc. will be described. The partial hanger C1 is made of metal and has an appropriate length (approximately 10 cm inside and outside), and has a U-shaped portion 13.
Upper surface portions 14a, 14a are formed outward from the rain upper end of a, and an end edge 15a that hangs down from the outer pot of the upper surface portions 14a, 14a.
, 15a are integrally formed (see FIG. 8).

The corner portion between the upper surface portion 14a and the hanging edge 15a is formed in an arc shape. 16 is a chevron-shaped bracket, and a chevron part 16a
A bottom side portion 16b is integrally formed at the lower end of the oblique side around 1 on both sides. A through hole or internal thread is provided at the top of the mountain-like portion 16a. 17 is a structural material such as a cross beam or a purlin, a frame, and 18 is a wooden board.

Insulating materials such as foamed synthetic resin and rock wool.

The flat type construction board A (see Fig. 1, etc.) is attached to the partial hanger C8, etc. using the same construction board A.

A is placed on the upper surface of the structural member 17 or the heat insulating material 18, etc. with an appropriate interval, and the U-shaped part 13a of the partial hanger C1 is fitted and placed directly above the structural member 17 within the interval. , the bottom part of the U-shaped part 13a and the structural member 17 are fixed with bolts, nuts 19, etc., and the upper part 14a, 14a hanging edge 1
5a, 15a are fitted onto the opposing rain tops 3.3 of adjacent architectural boards A, A. In the subsequent processing, the hanging edges 15a, 15a of the partial hanger C1 are wrapped around the hanging parts 7 of the camping material B, and the tightening structure of the tightening outer enclosure of the first to fourth embodiments is assembled. Do the same as the configuration (see Figure 3)
.

In addition, when attaching a folding type architectural board A (see Fig. 13, etc.) to a partial hanger 01, etc., place the architectural board A on the chevron bracket 16, and .

The vertical parts 2 and 2 of A are successively roofed with an appropriate distance between them, and the U-shaped part 13a of the partial hanger C1 is
are fitted and placed on the interval and the top of the angle-shaped bracket 16,
The bottom of the U-shaped part 13a and the top of the angle-shaped bracket 16 are fixed with bolts 20, etc., and the subsequent processing is carried out in the same manner as the flat type construction board A (see Fig. 13). . By installing the partial hanger 01 as described above and constructing the above-mentioned locking structure, a locking outer enclosure such as a roof or a wall is constructed.

Note that C2 is a through-hanger, and upper surface portions 14b, 14b are integrated outwardly from both upper ends of the U-shaped portion 13b (
(See Figure 19). Further, depending on the case, a hanging edge (not shown) may be integrally formed from the outer end of the rain upper surface portions 14b, 14b.

The through hanger C2 is formed to have a cross-sectional shape that is approximately the same size as the partial hanger C1. Describing the locking structure of the locking outer enclosure formed by the through-hanger C2, the first
As shown in FIG.
The U-shaped portion 13b of the hanger C2 is inserted into the space, and the bottom of the U-shaped portion 13b is connected to the structural member 17 with the bolt/nut 19. etc., and the upper surface portions 14b, 14b are fixed to the adjacent architectural board A.
, A are placed on the opposing rain tops 3,3. The subsequent work is carried out in the same way as for the partial hanger C1 part over the entire length in the longitudinal direction. Furthermore, folding type architectural board A (first
3 etc.) to the hanger 02 etc., please refer to the 15th
It is constructed in substantially the same way as attaching it to a partial hanger 01 etc. as shown in the figure. The tightening structure of the two points of the through-hanger C is the 19th
As shown in the figure, the cap material B has an arcuate portion 8 and a folded edge 9.
However, the cap material B shown in FIGS. 9 to 11 may be used to create a locking structure as shown in FIGS. 16 to 18. In some cases.

Next, the effects will be explained.

First, in the invention described in claim 1, vertical portions 2, 2 are formed on both sides of the main plate 1, and the raindrop surface portions 2.2 are formed on both sides of the main plate 1.
Architectural board A having upper parts 3, 3 formed inwardly from the upper end, and an edge 4°4 bent downward from the inner end in a folded shape.
are arranged side by side at an appropriate interval, a top part 6 is formed outwardly from both upper ends of the flat U-shaped part 5, and a part 7.
The flattened U-shaped part 5 of the camping material B provided with 7 is fitted between the adjacent architectural boards A, A, and both top parts 6, 6 and both hanging parts 7. A's opposite rain upper part 3,
3 Fits over both end edges 4, 4, forms the base side of the hanging portion 7 into an arc shape, and folds downward to tightly fit the upper portion 3 and the top portion 6, and the end edge 4 and the hanging portion 7, respectively. and its top 3 and edge 4
An appropriate gap 10 is formed between the rain upper part 3.3.
By forming both the top portions 6, 6 in an outward downwardly inclined shape, firstly, the locking workability is good, secondly, the locking portion can be well prevented from rusting, and as a result, long-term quality assurance is possible. It has many functions and effects, such as extremely high durability, thirdly, good watertightness (rain protection), and fourthly, especially good strength.

To explain the function and effect in detail, by forming the base side of the hanging portion 7 into an arc shape and folding it downward, there is no need for folding and crimping to create a flat shape, which was conventionally required, and it is generally possible to Folding into a flat shape requires the greatest force at the final stage, but simply folding into an arc shape does not require such a large force and can be folded with a relatively small force.
When tightening with a manual tightening machine, the tightening process can be performed efficiently with less labor. In addition, with an electric tightening machine, extremely efficient tightening processing can be performed even if the drive source is small. Furthermore, by folding it in an arc shape, there are almost no cracks or the like at the folded part, and the entire folding section has excellent corrosion resistance, and its durability can be maintained over a long period of time. In recent years, there has been a particular demand for fastened enclosures such as roofs that have excellent corrosion resistance and are durable. The present invention can satisfy the requirement for durability guaranteed for 10 to 20 years.

Furthermore, by bringing the upper part 3 and the top part 6 into close contact with each other, and by bringing the edge 4 and the hanging part 7 into close contact with each other, it is possible to eliminate any room for capillary phenomenon to occur, and furthermore, by bringing the upper part 3 and the top part 6 into close contact with each other, it is possible to eliminate the room for capillary action to occur, and furthermore, the gap between the upper part 3 and the end edge 4 can be eliminated. Part 10 can prevent capillary action and can block rainwater from entering from the tightening area, and the present invention solves the disadvantage that rainwater does not close even if the tightening is done by folding back and crimping in a flat shape as in the past. I was able to solve it.

Further, the base side of the drooping portion 70 is formed into an arc shape and then folded downward to bring the upper portion 3 and the top portion 6 into close contact with each other, and the edge 4 and the drooping portion 7, respectively. By forming the top part 6.6 in an outward downward slope, a large wind pressure (negative pressure) is applied to the building board A, lifting the main board 1 of the building board A upward and simultaneously lifting the vertical part 2. Even if a downward tensile force acts, the upper part 3 will not shift downward,
The strength of the tightened area can be increased.

Next, in the invention set forth in claim 2, the rain-dropping portion 7 of the camping material B in the configuration of the invention set forth in claim 1 is provided.
, 7 are brought into contact with the corners of the vertical part 2 and the upper part 3 of the building board AJ, and an appropriate first gap part 11 is formed between the upper part 2 and the hanging part 7. Firstly, the strength of the fastening part can be further increased, resulting in an extremely strong fastening structure, and secondly, the watertightness (rainproofing) can be improved.

To explain the action and effect in detail, the rain upper part 3, 3 top part 6.
6 is formed to be inclined outwardly downward, and the ends of the drooping portions 7 and 7 are brought into contact with the corners of the vertical portion 2 and the upper portion 3 of the architectural board A, so that the architectural Even if a large wind pressure (negative pressure) is applied to the board A, lifting the main board 1 of the architectural board A upward and simultaneously pulling the vertical part 2 downward, the end of the hanging part 7 is the vertical part 2 of architectural board A
The vertical part 2 is kept in a pressed state by coming into contact with the corner part of the upper part 3, and the vertical part 2 can be prevented from shifting downward. Strength can be further increased.

In addition, the first cavity 11 can prevent the capillary phenomenon of rainwater, and can reliably block rainwater from entering from the tightening area, providing a tightening structure with excellent rain closure (watertightness). can. The other configurations are the same as the invention of item 1, and similarly, the fastening workability is good, and the rust prevention of the fastening part is also good.
As a result, long-term quality assurance is possible, extremely durable products can be obtained, and the effects, such as good watertightness (rain protection), are the same as those of the invention described in item 1.

Next, in the invention recited in claim 3, the rain-dropping portion 7 of the camping material B in the configuration of the invention recited in claim 2 is provided.
．． Arcuate portions 8, 8 are formed that bulge outward in a mountain shape from the lower end of 7, and the corners of the hanging portion 7 and the arcuate portion 8 are connected to the vertical portion 2 and the upper portion 3 of the construction board A. A suitable first gap 11 is formed between the upper part 2 and the hanging part 7, and the end of the arc part 8 is brought into contact with the vertical part 2 to form a second gap. By forming the section 12, the second void section 12 can also prevent capillary action of rainwater, and the first void section 11
This makes it possible to create a double rainwater infiltration barrier structure, making it extremely rainproof (
It can provide a structure with excellent watertightness. Also, since the end of the arcuate part 8 was brought into contact with the two vertical parts, a large wind pressure (negative pressure) was applied to the building board A, lifting the main board 1 of the building board A upwards, and at the same time Even if a force that pulls the portion 2 downward and inward (toward the main plate l side) acts, it presses the lower position of the vertical portion 2, increasing the strength of the vertical portion 2, and eventually increasing the strength of the vertical portion 2. The strength of the tightened area can be further increased. Furthermore, the presence of the arcuate portion 8 allows the finish of the end portion of the cap material B to be formed neatly without waving in the longitudinal direction, increasing the section modulus and making it strong. The other configurations are the same as those of the second invention, and the same effects can be achieved.

Next, in the invention set forth in claim 4, both arcuate portions 8.
By forming a folded edge 9.9 inwardly from the outer end of the groove 8 and abutting the folded edge 9 against the two surfaces of the vertical portion to form a second cavity 12, rust prevention is achieved first. It can provide a durable fastening structure.

To explain the effects in detail, the corrosion of the clamped parts generally starts from the clamped ends, and the battery action corrosion (commonly known as "electrolytic corrosion") quickly spreads to the entire clamped part. However, when the folded edges 9° 9 are in contact with the vertical part 2 to the building board, the extreme ends of the folded edges 9, 9 are
It comes to exist inside the arcuate part 8 and the vertical part 2, and the ratio of exposure to rainwater can be minimized.
The end of the cap material B can be configured to be extremely resistant to corrosion,
The entire fastening part has excellent corrosion resistance, and its durability can be maintained over a long period of time. The other configurations are the same as those in the third aspect of the invention, and the same effects can be achieved.

In addition, as shown in FIG. 19, if the locking structure is made using a threaded hanger C2, the section modulus at any position in the longitudinal direction can be significantly increased, and it can be made even stronger.

[Brief explanation of drawings]

Figure 1 is a perspective view of a flat plate type fastening enclosure. Fig. 2 is a longitudinal sectional front view of the flat plate type of the present invention, Fig. 3 is a longitudinal sectional front view of the tightening structure at the partial hanger portion of Fig. 1, and Fig. 4
6 to 6 are longitudinal sectional front views of another embodiment of the present invention of flat plate type, FIG. 7 is a perspective view of a flat plate type construction board, and FIG.
The figure is a perspective view of the partial hanger, Figures 9 to 12 are perspective views of the cap material, Figure 13 is a perspective view of the folding type clamping enclosure, and Figure 14 is the folding type. FIG. 15 is a longitudinal sectional front view of the clamping structure at the partial hanger location shown in FIG. FIG. 19 is a front view, FIG. 19 is a perspective view of a locking enclosure constructed by using hanging ropes, and FIG. 20 is a cross-sectional view of a conventional locking structure. A... Construction board, B... Camping material, 1... Main board, 2...
・Vertical part, 3... Upper part, 4...
...Edge, 5...Flattened U-shaped portion, 6...
・・・Top part, 7...Drooping part, 8...
...Arc-shaped portion, 9...Folded edge, 10...
... Gap part, 11... First gap part, 12.
...Second cavity.

Claims (4)

[Claims] (1) Appropriately use a construction board with vertical parts formed on both sides of the main board, an upper part formed inward from the upper end of the raindrop part, and an edge bent in a folded shape downward from the inner end. Architectural boards adjacent to the flat U-shaped part of the camping material, which are arranged side by side with an interval of In addition, both top portions 9 and both drooping portions are fitted onto both edges of the opposing rain top portions 2 of the adjacent architectural boards, and the base side of the drooping portions is formed into an arc shape and extends downwardly. Fold it back and bring the upper part and the top part into close contact with each other, and the edge and the hanging part, respectively, form an appropriate gap between the upper part and the end edge, and make the rain top part 1 slope outward and downward. A fastening structure in a fastening outer body characterized by the formation of a fastening structure. (2) Appropriate construction board with vertical parts formed on both sides of the main board, an upper part formed inward from the upper end of the raindrop part, and an edge bent in a folded shape downward from the inner end. Architectural boards adjacent to the flat U-shaped part of the camping material, which are arranged side by side with an interval of In addition, both top parts 9 and both hanging parts are fitted onto both edges of the opposing rain top part 2 of the adjacent architectural board, and the base side of the hanging part is formed into an arc shape and folded downward. The upper part and the top part are brought into close contact with each other, and the edge and the hanging part are brought into close contact with each other. A locking structure in a locking outer enclosure characterized in that an appropriate first gap is formed between the rain upper part 1 and the rain top part is formed outwardly downward (in a diagonal shape). (3) Appropriately use a construction board with vertical parts formed on both sides of the main board, an upper part formed inward from the upper end of the raindrop part, and an edge bent in a folded shape downward from the inner end. The flat U-shaped part has a peak outward from both upper ends, a hanging part is provided from both ends, and a mountain-shaped part is provided outward from the lower end of the drooping part. A flattened U-shaped part of camping material having a bulging arc-shaped part is fitted between adjacent architectural boards, and both top parts are fitted. Both opposing upper parts of architectural boards adjacent to the drooping part. It fits over both end edges, forms the base side of the drooping part into an arc shape, and folds downward to bring the upper part and the top part into close contact with each other, and the end edge and the drooping part to make contact with each other, so that the drooping part and the arc part The corner of the building board is brought into contact with the corner of the vertical part and the upper part, an appropriate first gap is formed between the upper part and the hanging part, and the end of the arc part is A locking structure in a locking outer enclosure, characterized in that a second gap is formed by abutting against a vertical part surface, and a rain top part of the rain upper part 1 is formed to be inclined outwardly and downwardly. (4) Appropriately use a construction board with vertical parts formed on both sides of the main board, an upper part formed inward from the upper end of the raindrop part, and an edge bent in a folded shape downward from the inner end. The flat U-shaped part has a peak outward from both upper ends, a hanging part is provided from both outer ends, and a mountain-shaped part is provided outward from the lower end of the drooping part. A flat U-shaped portion of the cap material, which has a bulging arcuate portion and a folded edge inward from the outer ends of both elastic portions, is fitted between adjacent architectural boards; Both top parts 2 Both hanging parts are adjacent to each other and both opposing upper parts 1
It fits over both end edges, forms the base side of the drooping part into an arc shape, and folds downward to bring the upper part and the top part into close contact with each other, and the end edge and the drooping part to make contact with each other. The corner point with the edge is brought into contact with the corner point between the vertical part and the upper part of the architectural board, an appropriate first gap is formed between the upper part and the hanging part, and the folded end A locking structure in a locking outer enclosure, characterized in that a second gap is formed by abutting an edge against a vertical part surface, and a rain top part of the rain upper part is formed to slope outward and downward.