JPS58150656A - Insert eaves trough made of thin metal plate - 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 an eaves gutter in which a thin metal strip is embedded (inserted) into an eave gutter body made of hard synthetic resin.

The eaves gutter (A) shown in Figure J81 has a thin metal strip (C) embedded in the eave gutter body (B) made of hard synthetic resin, and hard synthetic resin is used on both the front and back sides of the thin metal strip (C). This is an eaves gutter (a) covered with resin layers (d) and (d). In this eaves gutter (a), as shown in Figure 2, the eaves gutter (a) is inside the water collector (not shown).
Drill a hole in the bottom of (a) to form a rainwater outlet (e), and cut the area around the outlet (e) with scissors or the like and bend it downward to allow rainwater to flow easily. When the rainwater guide pieces (H), (H), ... are formed, as shown in Fig. 3, in the rainwater guide piece (H), the hard synthetic resin layer (C) which is the surface layer is formed from the thin metal strip (C). d) and (d) are peeled off,
The exposed thin metal strip (c) corroded due to rainwater,
Due to aging, corrosion progresses to the inside of the eaves gutter body other than the rainwater outlet (E), and the hard synthetic resin layer (D) on the surface layer lifts up, making the appearance unsightly, and the strength decreases due to corrosion, resulting in deformation, etc. There was a fear that In addition, if the tip of the thin metal strip (C) is buried up to the side wall (R) of the ear (G) formed at the upper edge of the eaves gutter (A), scissors Stress concentration occurs during cutting, causing the tip to peel outward and cranking in the longitudinal direction of the ear.
Cracks) (nu) occurred, and there were problems such as corrosion caused by rainwater, etc., and difficulty in connecting joints.

The present invention has been made in view of the above points,
The present invention solves the above problems.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An explanation will be given below based on the drawings shown as embodiments of the present invention.

FIG. 5 is a perspective view of a thin metal plate insert eaves gutter A according to an 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 outer surface layer, and 4 is a fragile inner layer. It is. The eaves gutter A is made by coating both the front and back surfaces of a thin metal strip 2 with a hard synthetic resin material to form an outer surface layer 3.3. This brittle inner layer 4 is formed to exist between the surface of the thin metal strip 2 and the outer surface of the outer surface layer 3. That is, as shown in the cross-sectional view of FIG. 6, the fragile inner layer 4 may be coated on the thin metal strip 2 via the adhesive layer 8, and then coated with the outer surface layer 3. As shown in the figure, a middle layer 9.9 made of a synthetic resin stronger than the fragile inner layer 4 is coated on the thin metal strip 2 via an adhesive layer 8, and then the fragile inner layer 4 is coated.
The outer surface layer 3 may also be coated. The fragile inner layer 4 has a lower breaking strength than the outer surface layer 3 and the adhesive layer 8. As shown in FIG. 8, when a rainwater outlet as shown in FIG. 2 is drilled and a guide piece 1o is formed by cutting with scissors, the weakest fragile inner layer 4 is damaged due to intralayer failure 11. However, the brittle inner layer M4 remains on the surface of the thin metal strip 2 together with the adhesive layer 8, and has a rust-preventing effect.

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

For the outer surface layer 3, due to problems such as weather resistance, it is sufficient to use a filler with good weather resistance.For example, a material with good weather resistance may be blended with a hard synthetic resin such as vinyl chloride resin. It is formed by The thin metal strip 2 may be a steel plate such as a cold-rolled steel plate or a galvanized steel plate, and its thickness may be 0.1 to 0.3+u, and it may be selected depending on the overall thickness of the eaves gutter A. It is something that will be done. For example, when the overall thickness of the eaves gutter A is 1fl, the thickness of the thin metal strip 2 is 0.14n, and the thickness of the brittle inner layer 4 is 0.
The ゜231 outer surface layer 3 may have a thickness of 0.2 mm.

The eaves gutter A is made by coating a thin metal strip 2 with a brittle inner layer 4 made of synthetic resin in a flat plate shape to form a core plate shape, and then forming it into a gutter shape by roll forming etc. to cover the outer surface N3. Alternatively, the thin metal strip 2 may be coated with the brittle inner layer 4 and the outer surface layer 3 at the same time in a mold.

As described above, the thin metal plate insert eaves gutter of the present invention is formed by forming an outer surface layer made of hard synthetic resin on both the front and back sides of a thin metal strip, and forming a brittle inner layer within the outer surface layer. During cutting, internal destruction occurs in the weak inner layer, which is the most fragile and has the highest strength, and the weak inner layer remains on the thin metal strip, which has a rust-preventing effect, and only the end surface of the thin metal strip is damaged. It is not exposed and is resistant to changes over time, corrosion does not progress to the inside of the eaves gutter body, the outer surface does not lift, etc., and the eave gutter shape can be maintained for a long period of time. Together with the outer surface layer made of synthetic resin and the brittle inner layer, it is resistant to thermal deformation and bending deformation.

[Brief explanation of the drawing]

1 and 2 are perspective views of the conventional example, FIG. 3 is an enlarged perspective view of the guide piece of the conventional example shown in FIG. 2, and FIG. 4 is an enlarged perspective view of the ear portion of the conventional example after cutting with scissors. FIG. 5 is a perspective view of one embodiment of the present invention; FIGS. 6 and 7 are partial sectional views of eaves trough bodies of other embodiments of the present invention; FIG. 3 is an enlarged perspective view of a guide piece that rotates after being cut with scissors according to the embodiment. A is a thin metal plate insert eaves gutter, 2 is a thin metal strip, 3 is an outer surface layer, and 44 is a fragile inner layer. Patent applicant Matsushita Electric Works Co., Ltd. Patent attorney Late brother Toshimaru (two idiots) Figure 5 Figure 8 Yan 6 Figure 7

Claims (1)

[Claims] +11 A thin metal plate insert eaves gutter formed by forming an outer surface layer made of hard synthetic resin on both the front and back sides of a thin metal strip, and forming a brittle inner layer within the outer surface layer.