JPS6144182B2 - - Google Patents

Description

[Detailed description of the invention] 〔Technical field〕 The present invention relates to rain gutters.

[Background technology]

In conventional rain gutters, thin metal plates were inserted into the synthetic resin eaves gutters to prevent them from deforming due to heat. When formed, the upper edges 6' on both sides of the bent thin metal plate 2' stretch and exhibit a waving phenomenon as shown in FIG. When inserted into an eaves gutter, the edge of the eaves gutter cannot be straightened due to the effect of the waving phenomenon of the thin metal plate 2', resulting in distortion. In addition, Japanese Utility Model Application Publication No. 53-99631 discloses a thin metal plate inserted into a synthetic resin eaves gutter, in which the central part is embossed, and the upper edges on both sides have non-embossed parts. is disclosed, but in this eaves gutter, the upper edge of the thin metal plate is bent into a cylindrical shape along the surface of the solid ear. For this reason, the upper end of the thin metal plate inserted into the thick ear is also cylindrical, which causes problems such as difficulty in cutting the eaves gutter with scissors at the construction site, and large deformation of the cut end. It was hot.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned technical background, and its purpose is to prevent the occurrence of waving on both edges of a thin metal plate, and therefore to provide a rain gutter in which a thin metal plate is inserted. To provide a rain gutter whose ears can be made straight and which can be easily cut with scissors or the like.

[Disclosure of the invention]

In the rain gutter of the present invention, the upper edge of the thin metal plate 2 bent to have a substantially U-shaped cross section is a flat surface portion 4,
An embossed uneven portion 5 is formed in the center of the thin metal plate 2 between the flat surface portions 4, and the thin metal plate 2 is inserted into an eaves gutter 1 made of synthetic resin and having a substantially U-shaped cross section with an open top. It is characterized in that the flat surface portion 4 of the thin metal plate 2 is located on the inner peripheral surface side of a hollow ear portion 3 formed on the upper edge of the eaves gutter 1. However, if an internal stress that causes a waving phenomenon occurs in the flat surface portion 4 of the thin metal plate 2,
Each unevenness of the embossing is deflected (that is, the curvature of the unevenness changes), and as a result of the accumulation of the deflection of each unevenness, the uneven part 5 expands and contracts like a bellows, thereby preventing the waving phenomenon of the flat surface part 4. . In addition, since the end of the rain gutter on the ear side where cutting begins is a flat surface part 4, the rain gutter can be easily cut with scissors.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. A thin metal plate 2 to be inserted into the eaves gutter 1 is embossed in an uneven or wrinkled shape, leaving both edges intact, and the embossed thin metal plate 2
is bent into a substantially U-shaped cross section, and both non-embossed edges of the thin metal plate 2 are positioned at the upper edge to form a flat surface portion 4, and the embossed portion between the flat surface portions 4. is defined as the unevenly processed portion 5. Since the uneven portion 5 is embossed with uneven or wrinkled shapes, when internal stress that causes waving occurs in the flat surface portion 4 of the thin metal plate 2, the embossed portions 5 are embossed. It bends to cause a change in curvature, and as a result of the accumulation of the bending of each unevenness, the uneven part 5 expands and contracts like a bellows, the internal stress of the flat surface part 4 is absorbed, and the waving phenomenon of the flat surface part 4 is prevented, resulting in a flat surface. status is maintained.
Inside the eave gutter 1 whose top surface is open, this curved thin metal plate 2 extends from one ear part 3 to the other ear part 3.
is inserted, and the flat surface portion 4 at the upper edge of the thin metal plate 2 is located on the inner circumferential surface of the hollow ear portion 3, and since the flat surface portion 4 located at the ear portion 3 is not wavy, the eaves gutter 1 The ears 3 are formed straight.

〔Effect of the invention〕

As described above, the upper edge of a thin metal sheet bent into a substantially U-shaped cross section is made into a flat surface, and an embossed uneven portion is formed at the center of the thin metal sheet between the flat surface portions. This thin metal plate is inserted into a synthetic resin eaves gutter with an open top and a roughly U-shaped cross section, and the flat surface of the thin metal plate is placed on the inner peripheral side of the hollow ear formed on the upper edge of the eaves gutter. Because of this position, when an internal stress that causes a waving phenomenon occurs on the flat surface of the thin metal sheet, each unevenness of the embossing bends, and as a result of the accumulation of the deflection of each unevenness, the uneven part expands and contracts like a bellows. However, even if the thin metal plate is bent, it is possible to prevent the waving phenomenon on the flat surface portion. Furthermore, the upper edge of the thin metal plate is a flat surface and is inserted into the inner peripheral surface of the hollow ear, so when cutting the eaves gutter, the ear is hollow at the ear where the cut begins. The wall thickness is thinner, and the thin metal plate inserted is flat without curving, and since it is not embossed, there is no distortion when cutting, making it easy to cut with scissors etc. It also has the advantage of being able to cut cleanly. Note that although the central part of the thin metal plate is embossed, the embossment does not interfere with cutting because once cutting is started, cutting is performed smoothly.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a conventional thin metal plate for an insert, FIG. 2 is a perspective view showing an embodiment of the present invention, and FIG. 3 is a perspective view showing the same thin metal plate for an insert. 1 is an eaves gutter, 2 is a thin metal plate, 3 is an ear portion, 4 is a flat surface portion, and 5 is an uneven portion.

Claims (1)

[Claims] 1. The upper edge of a thin metal plate bent into a substantially U-shaped cross section is made into a flat surface, and an uneven part is formed by embossment in the center of the thin metal plate between the flat surface parts. It is inserted into an open eaves gutter made of synthetic resin and has a roughly U-shaped cross section, and the flat surface of the thin metal plate is positioned on the inner circumferential side of the hollow ear molded on the upper edge of the eaves gutter. Features rain gutters.