JPS6322257Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is suitable for use as a filling material for gaps in structures such as agricultural and horticultural greenhouses that require airtightness. It relates to fillers.

[Conventional technology]

In recent years, agricultural and horticultural greenhouses have been constructed using polyvinyl chloride resin, methyl methacrylate resin, etc., which have good light transmittance, as steel aggregates 1, etc., as shown in Figure 1.
A corrugated exterior material 2 made of polycarbonate resin etc. is attached to a fastener 3 such as a tapping screw or hook bolt.
It is common to use ..., but in this type of agricultural and horticultural greenhouses, etc., the filling material is made of soft synthetic resin foam that is rich in elasticity and airtightness, and the exterior material 2... It is sometimes stuffed into the gap 4 between the materials 1 and 1 to ensure the airtightness of the room.

Conventionally, fillers shown in FIG. 2 or 3 have been used for such purposes. Second
The filler 5 shown in the figure is made of a flat plate-shaped soft synthetic resin foam. The filling material 6 in FIG. 3 has a corrugated uneven wall 6a on one side having a corrugated pitch width l (see FIG. 1) of the corrugated exterior material 2, and the other side. It is formed of a synthetic resin foam 6 that is flat and has a rectangular or square cross-sectional shape at any point.

[Problem that the invention attempts to solve]

Since both of the fillers shown in Figures 2 and 3 are made of soft synthetic resin foam, they tend to twist when packed into the gaps, and in many cases they are packed into the gaps in a twisted state. .
However, the problem with the conventional fillers 5 and 6 shown in FIGS. 2 and 3 is that if they are crammed into a gap in a twisted state, the gap will not be closed, resulting in insufficient airtightness. It had

The present invention was developed in view of these circumstances, and is designed to be airtight for agricultural and horticultural greenhouses, etc., which can close the gap and ensure sufficient airtightness even if the space is crammed into the above-mentioned gap in a twisted state. The purpose is to provide fillers for

[Means for solving problems]

The airtight filling material for agricultural and horticultural greenhouses, etc. of this invention is
The bulges and constrictions are arranged alternately, and the contour lines that intersect with an arbitrary virtual plane that traverses the bulges and constrictions form a smooth waveform. The material is made of a soft synthetic resin foam having a shape in which the pitch width of the corrugated corrugations corresponds to the pitch width of the corrugations of the corrugated exterior material.

[Action]

The filler having such a structure is packed in a compressed state into the gap between the corrugated exterior material and the aggregate. In addition, in such a filler, there is not much difference when comparing the shape before and after twisting, and the difference becomes even smaller in a compressed state. Therefore, even if it is crammed into the gap in a twisted state, the gap will be closed.

〔Example〕

4 is a side view of the filler 7 according to an embodiment of the present invention, FIG. 5 is a cross-sectional view taken along the line -- in FIG. 4, and FIG. 6 is a cross-sectional view taken along the line -- in FIG. The filler 7 in this example is made of soft synthetic resin foam, and
As is clear from the figure, the bulging part 7b and the constricting part 7c
are arranged alternately, and the contour lines that intersect with an arbitrary virtual plane that traverses the bulging portion 7b and the constricted portion 7c form a smooth waveform, and the waveform formed by the above-mentioned contour line. The pitch width l' corresponds to the pitch width l of the corrugation of the corrugated exterior material 2 illustrated in FIG. Further, as shown in FIGS. 5 and 6, the cross-sectional shapes of the bulging portion 7b and the constricting portion 7c are formed into a perfect circle, and furthermore, the waveform formed by the above-mentioned contour line has a crest portion and a trough portion. have the same shape but opposite directions. Note that 7a indicates the outer surface of the filler 7.

Molded products such as polyvinyl chloride resin, polyethylene resin, synthetic rubber, etc. can be used for the soft synthetic resin foam constituting the filler 7, and the expansion ratio is about 5 to 50 times, especially about 30 times. can be used most suitably. The optimum dimensions of the maximum radius l _nax of the bulging part 7b and the minimum radius l _nio of the constricted part 7c are determined by the filling material 7.
Although it varies depending on the foaming ratio, when using a synthetic resin corrugated plate with a wave height of around 12 mm as the corrugated exterior material, l _nax is 15 to 18 mm, and l _nio is 2 to 5 mm.
Generally speaking, l _nio is 2 to 3 mm or more.
l _nax is preferably 3 to 5 mm larger than the wave height of the corrugated exterior material. Further, the accuracy of the waveform formed by the above-mentioned contour line is not required to be very high as long as the pitch width l' of the waveform corresponds accurately to the pitch width of the waveform of the corrugated exterior material. Above gap 4
When packed in a compressed state, the gap 4
It is sufficient that the condition that the area is blocked is satisfied. Therefore, as long as such conditions are met,
The shape of the filler 7 can be changed in various ways.

FIG. 7 is a side view showing filler 7 of different shapes;
Figure 8 is a sectional view taken along the - line in Figure 7, and Figure 9 is a cross-sectional view of Figure 7.
This is a cross-sectional view taken along the line -2 in the figure, and as is clear from these figures, the cross-sectional shape of the bulging portion and the constricted portion of the filler 7 is triangular with rounded corners and bottom portions.

[Effect of idea]

When the bulging part of the filler of the present invention is made to correspond to the wide part of the gap formed between the corrugated exterior material and the aggregate, and the constricted part is made to correspond to the narrow part of the gap and is packed in a compressed state, the filling material can be filled. Whether the material is twisted or not, it has the advantage that the gaps are closed and sufficient airtightness is ensured.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the structure of an agricultural and horticultural greenhouse, Figures 2 and 3 are diagrams showing conventionally known airtight filling materials,
FIG. 4 is a side view of a filler according to an embodiment of the present invention;
Figure 5 is a sectional view taken along the - line in Figure 4, and Figure 6 is a cross-sectional view of Figure 4.
FIG. 7 is a side view showing filling materials of different shapes, FIG. 8 is a sectional view taken along the line - in FIG. 7, and FIG. 9 is a sectional view taken along the line - in FIG. 7. 7...Filling material, 7b...Bulging portion, 7c...Constricted portion, l'...Pitch width of the waveform formed by the contour line, l...Pitch width of the waveform of the corrugated exterior material.

Claims (1)

[Scope of utility model registration request] The bulges and constrictions are arranged alternately, and a contour line that intersects with an arbitrary virtual plane that traverses the bulges and constrictions forms a smooth waveform. An airtight filling material for agricultural and horticultural greenhouses, etc., made of a soft synthetic resin foam whose waveform pitch width corresponds to the waveform pitch width of the corrugated exterior material.