JPS5865852A - Metal plate roof material - 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 metal sheet roofing material that does not require any skill and can be constructed in a short period of time with a highly waterproof metal sheet roof.

Conventionally, as shown in Figure 1, metal sheet roofing materials are provided with bent pieces by bending one of the four peripheral edges of a rectangular horizontal substrate, one of which is bent inward and the other outward, and the upper and lower edges are bent with the upper and lower edges. Since it is made with a half-bent piece with the edge half-bent outward and the bottom edge half-bent inward, when installing it, place the processed metal sheet roofing material on the bottom side of the roof in the same manner as above. By engaging the left and right bent pieces with other processed metal roofing materials, they are assembled one after another on the left and right, and then the upper and lower semi-bent pieces are completely bent along the two-dot chain line in Figure 1, and in the same manner. It is assembled vertically by engaging the treated metal roofing material vertically.

In this case, after the left and right bent pieces are engaged as shown in Figure 2, as the upper and lower half bent pieces are completely bent, the upper and lower parts of the left and right bent pieces are bent inwardly and outwardly, resulting in compression and immobilization. It becomes almost impossible to slide the roofing material from side to side. In this case, since metals generally have a large coefficient of thermal expansion, gold l14ji
Roots repeatedly expand and contract due to temperature and sunlight, but in construction using conventional roofing materials that prevent them from sliding freely from side to side, the roofing material itself undergoes repeated elastic-plastic deformation due to strain stress, causing thermal fatigue. This results in accelerated deterioration and also damages the appearance due to swelling. Furthermore, since the engagement states of the upper and lower and left and right sides are as shown in FIG. 2, rainwater often enters due to capillary action during rainy weather. In addition, during construction, the upper and lower half-bent pieces must be completely bent for upper and lower engagement, and subtle gaps must be created to prevent capillary action from occurring at the engaging part as much as possible.
This requires sufficient skill on the part of the builder and a huge amount of work time.

The present invention solves the above-mentioned drawbacks, prevents deterioration and loss of aesthetic appearance by not interfering with the natural expansion and contraction of metal roofing materials due to thermal changes, and is a metal sheet m that can be easily constructed due to its waterproof effect.
The purpose is to provide building materials.

Embodiments of the present invention will be described with reference to the drawings. FIG. 8 is a plan view of an embodiment of the present invention, (a) is a partially developed view, and (b) is a partially developed view.
is the completed drawing.

Among the four peripheral edges of the rectangular horizontal board (1), the left edge (2) is bent inward to form a left bent piece (2)', and the right edge (3) is bent slightly outward to form a right bent piece (3). )′, and cut out the upper and lower corners of each phase curved piece (2/・(3)′) into a predetermined shape to form cutout portions (2)“・(2)”・(3)′・( 3)
Form #'. Furthermore, the folded edge (4) of the right bent piece (3)' is folded back outward to form a folded part (5).

Also, vertical grooves (6), (6), (7), and (7) are formed in the horizontal portion of the bent cloth piece (8)' and the horizontal substrate (1) (see FIG. 8(a)). Furthermore, the lower edge (8) is bent inward at a line segment (α) that crosses the lower notch (2f'·(3j'') to form a lower bent piece (8f). Furthermore, the upper edge (
9) A horizontal groove ring that is parallel to the edge and extends inward is provided near the edge, and the upper edge (9) has an upper notch (
2)'・(81') is semi-bent to form the upper bent piece (9)'.
) If the vertically parallel lines (B) and (B) near the center of It looks like a joint in appearance, does not spoil the aesthetics, and also increases the strength against bending due to curvature (see Section 87 above).

As for the usage state of the present invention, first, as with the conventional one, from the m base to the left and right engaging parts, the right bending piece <3f and the other left bending piece (2f) are engaged, and the left and right bending pieces are engaged. When assembling the upper and lower parts one after another, the lower bent piece (8)' is already completely bent, so the upper half bent piece (9)' is completely bent, and the upper roofing material is assembled one after another. The width V
If the engagement is shifted by about 4 degrees, the finished product will be as shown in Fig. 4. In this case, the left and right engaged state will be as shown in the cross-sectional view of the left and right engaging portions in FIG. 5, and the vertically engaged state will be as shown in the cross-sectional view of the upper and lower engaging portions in FIG. 6.

Therefore, for the left and right holding parts, the horizontal plate (1) is
The gap ta formed between the left bent piece (3)' and the left bent piece (3)', and the gap (bl has a capillary tube) formed between the left bent piece (2)' and the right bent piece (3)'. Although there is room for phenomena to occur,
Even if rainwater enters, it will flow downward through the vertical grooves (6) and (7). ) (all water flows down from C1, see the enlarged sectional view on Z-I in Figure 7) and does not enter the roofing material. In addition, regarding the upper and lower retaining parts, the gap (d) formed between the horizontal part of the horizontal substrate (l) and the lower bent piece (8)' is widened by the action of the horizontal groove (to), so that capillary action is prevented. There's no room for it to happen. At the same time, this gap (d) does not prevent rainwater from flowing out from the gap (6). In addition, in conventional metal roof construction, after the left and right sides are engaged, the top and bottom sides are engaged, so the upper end of the left and right engagement parts.

The area near the lower end was twisted outward or inward, which pressed against sliding to the left or right, whereas the lower end of the uninvented left and right retaining part did not engage with the notch at all, so it could not slide to the left or right. is free, and even if the upper part is twisted outward after attachment, the part that compresses the left and right slide is completely or considerably cut out, so it is difficult to compress the movement of expansion and contraction due to heat.

The present invention has the above-described structure and functions as described above, so that the metal roofing material can freely slide from side to side due to expansion due to temperature and sunlight, so that the roofing material does not bend its arms or Less deterioration due to thermal fatigue due to strain stress.

In addition, all of the rainwater that enters the left and right retaining parts due to capillary action flows out before it can enter the inside of the roofing material due to the cutout at the lower end of the bent fabric part (3F) and the gap formed by the folded part. In addition, the upper and lower engaging parts have no wide gaps at all due to the protrusions of the horizontal grooves, and they do not prevent rainwater from flowing out and are completely waterproof.
The aesthetic appearance is also improved because the lower bending piece can be bent smoothly and greatly. In addition, regarding the construction work Cζ, the main work is only the bending of the upper part, and the engaging part has a structure that can prevent the above-mentioned capillary phenomenon, so there is no need to create delicate gaps, and it requires skill. It can greatly reduce work time when it is not needed.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a conventional metal plate roofing material, Figs. 1 and 2 are sectional views of the engaging part, Fig. 8 (a) is a partially expanded plan view of an embodiment of the present invention, and Fig. 8 (b) is a plan view of a conventional metal plate roofing material. A plan view of an embodiment of the present invention, Figure 114 is an explanatory diagram showing the finished state, Figure 5 is a cross-sectional view of the left and right engaging portions of the present invention-1, Figure 6 is a cross-sectional view of the upper and lower engaging parts of the present invention, and Figure 117 is a w
1-(This is an explanatory diagram of the rainwater outflow state according to a sectional view of Figure i4. (2)': Left bent piece (2): Upper left notch (2): Lower left notch (3): Right bent Piece (3): Upper right notch (3): Lower right notch (5): Turned part (8): Lower bent piece (9)': Upper bent piece (A): Lateral groove Figure 1 Figure 2 Figure 4 Figure 5

Claims (1)

[Claims] l) Among the left and right edges of the four peripheral edges of the rectangular horizontal substrate, one is bent inward to form a bent piece, and the other is bent outward to form a bent piece, and each of both bent pieces is bent inward to form a bent piece. The upper and lower corners are notched into a predetermined shape, and the folded edges of the outer bent pieces are folded outward to form folded parts, and the lower edges are further bent inward along a line that crosses the lower notched parts to form bent pieces. Further, near the upper edge ξζ is provided with a groove that is parallel to the skeleton edge and projects inward, and the upper edge is semi-bent outward with a line that crosses the upper notch at the lower part of the axillary groove to form a bent piece. A metal sheet roofing material that is characterized by: