JPH0425952Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to a fixing member for vinyl films, etc., which is used to fasten the covering material, such as vinyl film, to the frame of a greenhouse, etc. For example, the present invention relates to a fixing member for vinyl film, etc., which has a sheet fixing groove with a narrow opening, and has a curled portion formed at the opening edge of the side wall so as not to damage the vinyl film, etc.

BACKGROUND TECHNOLOGY Conventionally, when constructing a vinyl house as shown in Fig. 7, a fixing method as shown in Fig. 8 was used as a means for fixing a vinyl film, etc. (hereinafter also referred to as a sheet), which is a covering material of the house, to the house frame. It is well known that the member 3 is widely used (for example, Japanese Utility Model Publication No. 48-37715 and Japanese Utility Model Application Publication No. 52-163537).

This fixing member 3, as illustrated in FIG.
It is used by attaching and fixing it to the pipe material 6, which is the frame of the greenhouse, using a connector 8 using, for example, a wedge 7, and is usually a roll of galvanized thin steel strip (or iron plate). Manufactured using the forming process.

This fixing member 3 has a sheet fixing groove 2 in which both side walls 1, 1 are tilted inward in a symmetrical substantially V-shape to have a narrow opening. A vinyl film 5 can be stopped by a certain trapezoidal wave-shaped sheet fastening line 4. The upper ends (opening edges) of both side walls 1, 1 are formed into a rounded curled part 10 to prevent workers' hands from being injured by burrs and burrs that often occur at the edge of the steel strip. , the structure is such that the film 5 is prevented from being damaged.

Conventionally, the shape of the curled portion is simply a half-opened curled portion 10 in a substantially C-shape as illustrated in FIG.
(Fig. 3 of Japanese Utility Model Publication No. 50-148244), or as shown in Fig. 12, the curled part 10 is formed into a closed round shape approximately in the shape of a balloon, or as shown in Fig. 13, the curled part 10 is formed. The edge of the steel plate is the side wall 1
(For example, Fig. 2 of Japanese Utility Model Application Publication No. 163537/1983)
is commonly practiced and belongs to the public knowledge.

As a means for fixing the vinyl film 5 instead of the sheet fixing line 4, a method of using a synthetic resin fixing plate 9 as shown in FIG. 10 has also been developed (pending application). Alternatively, methods of fixing the vinyl film 5 to the sheet fixing groove 2 using various other fixing materials or fixing lines are also known.

Regarding the cross-sectional shape of the fixing member 3, in addition to the shape in which both side walls are inclined inward in a substantially V-shape as described above, for example, as shown in FIG. (For example, Jitsukō 59-41963
There are various known types such as the one in which the middle part of the side wall bulges outward in the shape of a drum.

Problems to be Solved by the Present Invention The material of the fixing member 3, such as vinyl film, is generally the above-mentioned galvanized steel plate (or galvanized iron plate, etc.), which is cut into strips lengthwise to a desired width. is used. Therefore, as shown in FIG. 14, which is an enlarged view of the shape of the curled portion 10 illustrated in FIG. It simply remains in a position where it is exposed and faces the outer surface of the steel plate. Therefore, when the condensed water droplet 13 falls down on the fixed vinyl film 5, the water droplet 13 first adheres to the lower half of the curled part 10 due to surface tension, and the size (weight) exceeds the surface tension. ). Then,
Iron part (steel part) 12 exposed from galvanized layer 11
is immersed in the water droplet 13. Therefore, the iron portion 12 is rusted and corroded by moisture.

That is, even if the galvanized layer 11 is provided with anti-corrosion treatment, the rusting and corrosion of the iron portion 12 progresses over time, significantly shortening the service life of the fixing member 3. In particular, if even one spot of red rust occurs on the curled portion 10, it will scatter along with the droplets, so there is a big concern that the rust will rapidly expand and grow in the surrounding area (commonly called rust), just as one spot of rust becomes rust.

Further, since not only the fixing member 3 but also the vinyl film 5 is stained with droplets containing red rust, not only does it look clean, but the light transmittance of the stained vinyl film 5 is reduced. Alternatively, there is a problem in that the dripping of water droplets 13 containing red rust impairs the growth of crops and worsens the working environment for workers working below.

Means for Solving the Problems As a means for solving the above-mentioned problems of the prior art, a fixing member such as a vinyl film according to this invention is a sheet having a narrow opening, as shown in an embodiment in the drawings. having a fixing groove 2;
In a fixing member 3 such as a vinyl film, in which a curled portion 10 is roundly formed at the opening edge of the side wall 1, the curled portion 1 is formed at the upper end of both side walls 1, 1.
0 is a position where the steel plate edge portion (iron portion or steel portion) 12 forms an arc of about one circumference and faces the outer surface of the steel plate (for example, see the positions in Figs. 12, 13, and 14), and at least the hollow of the curl. The structure is characterized in that it is rolled up into a circle to a position facing inward toward the inside of the section (for example, see FIGS. 1 and 2).

Function The curled part 10 is the steel plate edge part (iron part or steel part) 1
As shown in FIG. 2, the vinyl film 5 fixed to the fixing member 3 Even if water droplets 13 such as condensation run down to the curled portion 10 and remain there for a while, these water droplets 13 will only come into contact with the plating layer 11 on the surface of the steel sheet, and the edge portion 12 of the steel sheet will be immersed in the water droplets 13. It never happens (Figure 2). Therefore, the problem of rusting, corrosion, and deterioration of the iron or steel parts due to the water droplets 13 does not occur.

Embodiment Next, an embodiment of the present invention shown in the drawings will be described.

First, in FIG. 1, both side walls 1, 1 have a sheet fixing groove 2 which is inclined inward in a substantially symmetrical V-shape and has a narrow opening, and a round curled portion at the upper end of the side wall 1. In the fixing member 3, such as a vinyl film, in which the curled portion 10 is formed, the steel plate edge 12 forms an arc of approximately one circumference, and the curled portion 10 is formed on the outer surface of the steel plate, as shown in detail in an enlarged manner in FIG. Beyond the facing position, that is, the position where the steel plate edge 12 is brought into contact with the steel plate outer surface (side wall outer surface) at a substantially right angle to the steel plate outer surface (side wall outer surface) as in the conventional example shown in FIGS. It has a configuration in which it is rolled inward to a position facing inward into the hollow part.
To further describe the position where the steel plate edge portion 12 faces inward, water droplets 13 condensing on the vinyl film 5 fixed to the fixing member 3 run down to the curled portion 10 as shown in FIG. This means that the steel plate edge 12 is directed inward to a position where the steel plate edge 12 is not immersed in the water droplets 13 even if the water droplets 13 adhere and remain there for a while.

Therefore, in the curled portion 10, the steel plate edge portion 12 exposed from the plating layer 11 is never rusted or corroded by the water droplets 13.

Other Embodiments (No. 1) The fixing member 3 shown in FIG. 3 has a structure in which the curled portion 10 has a steel plate edge portion 12 curled inwardly more deeply than in the example shown in FIG. It is characterized by Further, a V-shaped groove 14 for positioning is formed in the longitudinal direction of the central portion of the groove bottom of the sheet fixing groove 2 to prevent the tip of the self-tap screw from slipping at the beginning of the screw fixing operation.

(Part 2) The fixing member 3 shown in FIG. 4 is made by rolling the steel plate edge 12 using a roll press to thin it, as shown in FIG. It is characterized by a structure in which the thinned part is curled inward as a curl part 10.

That is, if the curled portion 10 is formed by rolling the steel sheet edge 12 longer than the position where it points inward into the hollow portion of the curl as in the present invention, the width of the steel strip that is the raw material is correspondingly wide. new products will be required, and all standards of production technology will have to be changed to accommodate this. However, by rolling the steel plate edge part 12 thinly with a roll press as in this embodiment, the insufficient width can be satisfied, and the steel strip plate of the previous standard can be used as is. It becomes possible to do so. Not only that, the thinly stretched steel plate edge 12 also has a considerably smaller surface area of the iron part (steel part) exposed from the plating layer 11.
Since the degree of contact with air is reduced, the progress of oxidative rusting is also reduced. Of course, the weight of the fixing member 3 does not change, and the stiffening effect of the fixing member 3 improves as the curled portion 10 becomes longer.

(Part 4) Fig. 6 relates to a fixing member 3 whose cross section is in the shape of a so-called channel-shaped steel with a lip. It has a structure in which the edge portion 12 is rolled inward in a double manner.

Effects of the present invention As described above in detail in conjunction with the embodiments, the fixing member 3 such as a vinyl film according to this invention completely prevents rusting and corrosion of the curled portion 10 due to water droplets 13 such as dew condensation. This contributes to the construction of a strong and long-lasting vinyl house, which maintains its original useful life for a long time.

Further, since water droplets 13 containing red rust are not generated, there is no risk of so-called rust.

Moreover, not only the fixing member 3 and the vinyl film 5 are not stained and look good, but also the light transmittance of the vinyl film 5 does not decrease, and the greenhouse function of the greenhouse is maintained well.

[Brief explanation of the drawing]

1, 3 and 4 are front views showing fixing members according to embodiments of the present invention, and FIGS. 2 and 5 show curled portions in the embodiments of FIGS. 1 and 4, respectively. An enlarged detailed view, FIG. 6 is a front view showing a further different embodiment of the present invention, FIG. 7 is a perspective view showing the frame of the greenhouse, and FIGS.
Figure 0 is a perspective view showing the state of use of the fixing member.
1 to 13 are front views showing a conventional fixing member, and FIG. 14 is a detailed enlarged view showing the curled portion of the conventional example shown in FIG. 12. DESCRIPTION OF SYMBOLS 1... Side wall, 2... Sheet fixing part, 10... Curl part, 3... Fixing member.

Claims (1)

[Scope of Claim for Utility Model Registration] In a fixing member such as a vinyl film having a sheet fixing groove with a narrow opening and a curled portion formed at the edge of the opening of the wall, the curled portion of the side wall is , a vinyl film, etc., characterized in that the edge of the steel plate forms an arc of about one circumference and is wound beyond the position facing the outer surface of the steel plate to at least a position inward toward the hollow part of the curl, etc. fixing member.