JPH0243942Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a synthetic resin corrugated plate used as a roof board for agricultural and horticultural greenhouses, garages, etc.

(Prior technology) Agricultural and horticultural greenhouses that use corrugated synthetic resin sheets as roof panels are popular in various places, but in such greenhouses, water droplets that condense on the bottom of the roof panels generally fall and damage the plants. There was a problem.

Therefore, in order to solve this problem, a synthetic resin corrugated plate as shown in Figure 3 was devised (in 1987).
−99031). That is, this corrugated plate has large wave portions 102 on both sides and in the middle thereof, which are composed of two adjacent deep valley portions 100 and a peak portion 101 located between them.
A small wave part 103 is formed between these large wave parts, and a peak part 101 of the large wave part 102 is formed.
The apex of the small wave portion 103 and the apex of the crest of the small wave portion 103 are configured to be at the same height position.

Such a corrugated sheet is placed on the purlin material 104 with the large wave portions 102 on the side sides overlapped with the large wave portions on the side sides of the adjacent corrugated sheet, and the crests 10 of each large wave portion 102 are stacked on top of the main building material 104.
1 to the purlin material 104 with fasteners 105, it can be attached to the roof. When pasted in this manner, only the troughs 100 of the large corrugated portions 102 of the corrugated sheet come into contact with the purlin material 104, and the small corrugated portions 103
Since a gap 106 is created between the main building material 104 and the main building material 104, water droplets condensed on the lower surface of the small wave section 102 flow down through the troughs of the small wave section 103 without transferring to the main building material 104. Therefore, the condensed water droplets will not transfer to the purlin material 104 and fall from there.

However, although this corrugated plate exhibits the above-mentioned drip-proof effect, it has the following problems.

(Problems to be solved by the invention) That is, one of the problems is that the peak part 1 of the large wave part 102
The apex of 01 is at the same height as the peak of the small wave part 103, and when viewed from above, the large wave part 102
Since the configuration makes it difficult to distinguish between the large wave portion 103 and the small wave portion 103, when pasting this corrugated plate, it is difficult to find the peak portion 101 of the large wave portion 102 (especially the large wave portion located in the middle) where the stopper 105 should be driven. be. Another problem is that if a worker steps on the large wave section 102 when installing the corrugated sheet,
The small wave parts 103 on both sides of the large wave part 102 easily bend elastically downward under the load of the worker, as shown by the broken lines in FIG. Most of the damage is concentrated on the peak 101, and the peak 101 is likely to be damaged.

The present invention attempts to solve these problems.

(Means for solving the problem) That is, in order to solve the above problem, the synthetic resin corrugated sheet according to the present invention is a corrugated sheet in which a large number of crests and troughs are alternately continuous, and the wave Low wave parts are formed in several places so that the center line connecting the equilibrium points is shifted downward by approximately half the wave height at several places, and each low wave part has a peak part with a colored linear mark. It consists of troughs on both sides and has the same wave height as the wave height of the wave parts other than the lower wave parts.

(Function) With such a configuration, since there is a colored linear mark on the crest of the low wave part, the mark immediately catches the eye, and the mark can be used to locate the crest of the low wave part where the stopper should be driven. You can easily find it. Moreover,
The low wave part and the other wave parts (hereinafter referred to as high wave part for convenience) have the same wave height and the difference between their center lines is small, about half of the wave height, so if you step on the low wave part as the center , the high wave parts on both sides of the low wave part are elastically deformed downward as shown by the chain lines in Figure 2 due to the load and come into contact with the purlin material, and the peaks of the crests of the low wave part and the high wave part are at the same height position. They will be all together. Therefore, since the load is applied to each ridge portion in a distributed manner, damage to the ridge portions can be prevented.

Hereinafter, the synthetic resin corrugated plate of the present invention will be described in detail with reference to Examples.

(Example) Fig. 1 is a partially enlarged sectional view of an embodiment of the present invention, and this synthetic resin corrugated plate has a transparent or semi-transparent wave having a large number of alternating peaks and troughs as shown in the figure. It is a plate, and low-level corrugated portions 1 are formed near the right end, center, and left end of the corrugated sheet, respectively.

This low wave portion 1 is composed of one peak 11 and troughs 12 on both sides thereof, and near the apex of the peak 11 there is a colored linear shape made of glass fiber thread colored, for example, red. A mark 13 is buried along the entire length of the mountain.

The wave height h of this low wave part 1 is the wave height H of the high wave part 2.
and the center line y connecting the equilibrium points of the low wave part 1 is shifted downward by approximately half of the wave height from the center line Y of the high wave part 2. The vertical positional relationship with Therefore, the peak of the peak 11 and the bottom of the trough 12 of the low wave section 1 are approximately equal to the wave height H (h), compared to the peak of the peak 21 and the bottom of the trough 22 of the high wave section 2. It is located only half way down.

The high-level wave part 2 has a peak part 2 compared to the low-level wave part 1.
1 and troughs 22, and therefore most of this corrugated sheet is occupied by the high-order corrugation section 2, but only the high-order corrugation section 2' at the left end of this corrugated sheet has two peaks. It is composed of only a portion 21 and one valley portion 22. This high-level corrugated portion 2' at the left end is for increasing the overlap length and preventing rainwater from entering when the end portions of the corrugated sheets are pasted together, and can be omitted.

There are no particular restrictions on the material resin for such a corrugated sheet, but in order to obtain a corrugated sheet with excellent strength and weather resistance and high commercial value, it is desirable to use glass fiber reinforced acrylic resin or the like. In addition, the thickness of the corrugated sheet, the wave height,
The wavelength, the spacing between the low wave parts 1, etc. can be set freely, but for example, when manufacturing with the above glass fiber reinforced acrylic resin, the thickness should be about 0.6 mm,
It is appropriate to set the wave height to about 9 mm, the wavelength to about 33 mm, and the interval between the low wave parts 1 to about 200 mm.

As shown in Fig. 2, the synthetic resin corrugated sheet having the above structure is placed on the roof purlin material 3, and the low corrugation part 1 and the high corrugation part 2' at the left end are at the right end of the adjacent corrugated sheet. It is superimposed on the low wave part 1 and the high wave part 2, respectively, and is fixed and attached to the purlin material 3 from the peak part 11 of each low wave part 1 with appropriate fasteners 4. In that case, since colored linear marks 13 are provided near the peaks of the peaks 11 of each low-level wave portion 1, the peaks 11 into which the fasteners 4 should be driven can be immediately found, and therefore, You can perform pasting work efficiently. Moreover, even if the worker steps on the low wave part 1 with his/her foot centered on the low wave part 1 during pasting work, the wave heights h and H of the low wave part 1 and the high wave part 2 are the same, and the center lines y and Y of both are the same. Since the deviation is approximately half the wave height, the high wave parts 2 on both sides of the low wave part 1 are elastically deformed downward as shown by the chain lines in FIG. The peaks of the peaks 11 and 21 of the high-level wave section 2 are aligned at the same height position. Therefore, the load is on each peak 1
1 and 21, it is possible to prevent the peaks from being damaged.

When the corrugated plate is pasted in this way, only the troughs 11 of the low-level corrugated portion 1 come into contact with the purlin material 3, and a gap 5 is created between the high-level corrugated portion 2 and the purlin material 3.
Water droplets condensed on the lower surface of the high-level wave section 2 flow down through each trough 22 of the high-level wave section 2 without transferring to the purlin material 3. Therefore, the condensed water droplets will not transfer to the purlin material 3 and fall from there.

In addition, if the deviation between the center line y of the low wave part 1 and the center line Y of the high wave part 2 is much larger than approximately half of the wave height, the vertical difference between the low wave part 1 and the high wave part 2 is Because it becomes too large, when the high wave part 2 elastically deforms downward due to the load, the trough 1 of the low wave part 1
2 has the disadvantage that a large deformation stress occurs, and conversely, if the deviation between the center lines y and Y is much smaller than approximately half of the wave height, the high-level corrugated part 2 and the purlin material 3 with the corrugated plate attached Since there is not a sufficient gap 5 between the two, there is a disadvantage that condensed water droplets cannot pass through and transfer to the purlin material 3 and fall, and both cases should be avoided.

(Effects of the invention) As can be understood from the above explanation, the synthetic resin corrugated plate of the invention has excellent effects such as preventing damage to peaks, improving installation efficiency, and preventing dripping of condensed water. It is highly practical.

[Brief explanation of the drawing]

FIG. 1 is a partially enlarged sectional view of an embodiment of the present invention.
FIG. 2 is an explanatory diagram of the usage state of the same embodiment, and FIG. 3 is an explanatory diagram of the usage state of the conventional example. 1...Low wave part, 2...Wave part other than the low wave part (high wave part), 11, 21...Mountain part, 12, 22...
...Trough, H, h...Wave height, Y, y...Center line.

Claims (1)

[Scope of utility model registration request] A corrugated sheet with a large number of alternating peaks and troughs, with low-level corrugations formed at several locations such that the center line connecting the equilibrium points of the waves is shifted downward by approximately half the wave height at several locations. Each low-level wave part is composed of one peak having a colored linear mark and troughs on both sides thereof, and the wave height is the same as that of the other wave parts. Synthetic resin corrugated plate.