JPS6242017Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is a rain gutter in which a surface layer made of hard synthetic resin is formed on a thin metal strip.

The eaves gutter A shown in Fig. 1 has a thin metal strip C embedded in the eave gutter body L made of hard synthetic resin. That is, two hard synthetic resin layers are placed on both the front and back sides of the thin metal strip C. This is an eaves gutter covered with In this eaves gutter, as shown in Figure 2, a hole is bored at the bottom of the eaves gutter in a water collector (not shown) to form a rainwater outlet. When a rainwater guiding piece is formed by making a cut around the periphery and bending it downward to make it easier for rainwater to flow, the surface layer is removed from the thin metal strip C to the rainwater guiding piece as shown in Figure 3. The hard synthetic resin layers 2 and 2 peel off, and the exposed thin metal strip 3 corrodes due to rainwater, and over time, the corrosion progresses to the inside of the eaves gutter body other than the drop opening, causing the surface to deteriorate. The synthetic resin layer 2 of the layer would lift up, resulting in an unsightly appearance, and the strength would decrease due to corrosion, leading to the risk of deformation. In addition, when the tip of the thin metal strip C is buried up to the side wall of the ear formed at the upper edge of the eaves gutter A,
When cutting with scissors, as shown in Figure 4, stress concentration occurs at the tip of the tip, causing the tip to peel outward and cracks to form in the longitudinal direction of the ear. There were problems such as corrosion and difficulty in connecting joints.

The present invention has been made in view of the above-mentioned points, and the present invention eliminates the above-mentioned drawbacks.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be explained based on the drawings shown as embodiments.

Figure 5 shows rain gutter A with a thin metal plate insert of the present invention.
1 is a perspective view of one embodiment of the present invention. In the figure, 1 is the main body of the eaves gutter, 2 is a thin metal strip, 3 is an inner layer, 4 is a brittle intermediate layer, and 5 is an outer surface layer. The eaves gutter body 1 of the thin metal plate insert rain gutter A has inner layers 3, 3 made of hard synthetic resin formed on both the front and back surfaces of a thin metal strip 2, and fragile intermediate layers 4, 4 formed on the inner layer 3. ,
Furthermore, outer surface layers 5, 5 made of hard synthetic resin are formed on the fragile intermediate layer 4. The fragile intermediate layer 4
is stronger than the inner layer 3 and the outer surface layer 5 and has a lower breaking strength. It may be combined to make it weak,
In that case, it can be made at low cost and also has improved thermal deformability. FIG. 6 is a partially enlarged view of the present invention, in which inner layers 3, 3 are formed on a thin metal strip via adhesive 6, 6, and this adhesive strength is stronger than that of the brittle intermediate layer 4. It is. Further, as shown in FIG. 8, the fragile intermediate layer 4 may be an adhesive layer,
The inner layer 3 and the outer surface layer 5 may be pasted together, in which case the adhesive strength of the adhesive layer will be weaker than that of the inner layer 3 and the outer surface layer 5.

As shown in FIG. 7, when a droplet as shown in FIG. 2 is drilled in the eaves gutter body 1 and a guide piece B is formed by cutting with scissors, the weakest brittle intermediate layer 4
However, the inner layer 3 made of hard synthetic resin necessarily remains on the surface of the thin metal strip 2, which has an anti-corrosion effect.

For example, when the brittle inner layer 4 contains a large amount of inorganic filler such as charcoal, it becomes brittle and the cost can be reduced, making it possible to manufacture the eaves gutter itself at low cost.
It has improved heat resistance and can prevent bending and thermal deformation.

Due to issues such as weather resistance, the outer surface layer 5 only needs to use a filler with good weather resistance.
For example, the hard synthetic resin may be vinyl chloride resin or the like, and the thin metal strip 2 may be a steel plate such as a cold-rolled steel plate or a galvanized steel plate, and the thickness thereof is 0.1 to 0.3 mm. The choice is made depending on the overall thickness of the eaves gutter body. For example, when the overall thickness of the eaves gutter body 1 is 1 mm, the thickness of the thin metal strip 2 should be 0.14 mm, the thickness of the fragile inner layer 4 should be 0.23 mm, and the thickness of the outer surface layer 3 should be 0.2 mm.

The eaves gutter body 1 is attached to a thin metal strip 2 in a flat state,
After coating the inner layer 3 made of hard synthetic resin and coating the fragile intermediate layer 4, by roll molding or the like,
It may be formed into a gutter shape and coated with the outer surface layer 5, or the inner layer 3, brittle intermediate layer 4, and outer surface layer 5 may be coated simultaneously in a mold.

As described above, the thin metal plate insert rain gutter of the present invention forms an inner layer made of hard synthetic resin on both the front and back sides of a thin metal strip, forms a brittle intermediate layer on the inner layer, and further forms a brittle intermediate layer on the brittle intermediate layer. Since the outer surface layer is made of hard synthetic resin, when cutting with scissors,
Internal destruction occurs in the weakest and brittle intermediate layer, and an inner layer made of hard synthetic resin inevitably remains on the thin metal strip, which has a rust-preventing effect and is also effective for thin metal strips. Only the end surfaces of the strips are exposed, making them resistant to aging, preventing corrosion from progressing to the inside of the gutter body, preventing the outer surface layer from lifting, etc., and maintaining the gutter shape for a long period of time. Moreover, it is resistant to thermal deformation, etc.

[Brief explanation of the drawing]

Figures 1 and 2 are perspective views of the conventional example, Figure 3 is an enlarged perspective view of the guide piece in Figure 2, Figure 4 is an enlarged perspective view of the ear portion of the conventional example after cutting with scissors, and Figure 5. 6 and 8 are partially enlarged cross-sectional views of other embodiments of the present invention, and FIG. 7 is an enlarged perspective view of the guide piece of the present invention after cutting with scissors. be. A is a thin metal plate insert rain gutter, 1 is the main body of the eaves gutter, 2 is a thin metal strip, 3 is an inner layer, 4 is a fragile intermediate layer, and 5 is an outer surface layer.

Claims (1)

[Scope of utility model registration request] An inner layer made of hard synthetic resin is formed on both the front and back sides of a thin metal strip, and a brittle intermediate layer is formed on the inner layer,
Furthermore, a thin metal plate insert rain gutter is formed by forming an exterior surface layer made of hard synthetic resin on the brittle intermediate layer.