JPS6112067B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rectangular eaves gutter, and more specifically, a rectangular gutter body 1 having a substantially U-shaped cross section with rising pieces 6 erected at both ends of a bottom piece 4 is made of a material such as polyvinyl chloride resin. It is formed of synthetic resin and has a cross section of approximately L in the corner part 2 from both ends of the bottom piece 4 of the square gutter body 1 to the lower end of the rising piece 6.
This relates to a rectangular eaves gutter characterized in that a thin elastic plate piece 3 bent in a character shape and having spring properties is buried in an expanded state.

Conventional square eaves gutters are made of synthetic resin such as polyvinyl chloride resin, and have rising pieces that are slightly tilted outward from both ends of the bottom piece. When this rectangular eaves gutter is heated, it softens and its longitudinal center suspends downward due to its own weight, and the rising pieces of the suspended part bend outward and fall down, deforming the structure. There was a drawback that if the pieces fell outward, rainwater would spill from this part. The present invention aims to eliminate the above-mentioned drawbacks.

The present invention will be explained in detail below with reference to the accompanying drawings. 1 is a rectangular gutter body made of a long piece made of synthetic resin such as polyvinyl chloride resin, and a horizontal plate-shaped bottom piece 4 has a small gently sloped piece slightly diagonally upward from both side edges of the bottom piece 4 toward the outside. 5 is extended, and a rising piece 6 is provided upwardly from the upper edge of the gently inclined piece 5 and inclined slightly outward, and an ear portion 7 is provided on the upper edge of the rising piece 6. Elastic thin plate pieces 3 having a substantially U-shaped cross section and having spring properties are forcibly expanded along the longitudinal direction of the square gutter body 1 at both corner parts 2 [near the gently inclined pieces 5] of the square gutter body 1. It was buried as an insert in the same state. The elastic thin plate piece 3 is formed of, for example, a metal spring plate or a thin plate of synthetic resin such as nylon, polycarbonate, FRP, etc., and has a thickness such that it can be easily cut with a saw or scissors. In the case of plates, the thickness is 0.1m/m to 0.15m/m. This rectangular eaves gutter is formed, for example, by extrusion molding, in which case the elastic thin plate piece 3 is extruded from the nipple of a die of an extrusion molding machine while being expanded, and at the same time, molten plastic is extruded from the crosshead. One possible method is to form a rectangular gutter body. Since the elastic thin plate piece 3 is embedded in the corner part 2 of the square gutter body 1 in this way, the elastic thin plate piece 3
The elastic shape-retaining force prevents the rising piece 6 from falling outward, but since the elastic thin plate piece 3 is buried in the corner part 2 in an expanded state, the rising piece 6 is prevented from falling outward. It is urged inward by the restoring force of 3, making it even more difficult to fall outward.

As described above, the present invention includes a rectangular gutter body having a substantially U-shaped cross section with rising pieces erected at both ends of the bottom piece, made of synthetic resin such as polyvinyl chloride resin, and extending from both ends of the bottom piece of the rectangular gutter body. An elastic thin plate piece with spring properties bent into a roughly L-shaped cross section is buried in the corner toward the lower end of the rising piece, so even if the square gutter body softens due to heat, the stiffness of the elastic thin plate piece will keep the rising piece intact. is supported, preventing the upright pieces from falling outward and deforming the eaves gutter, and the elastic thin plate pieces are inserted in an expanded state to reduce the initial stress at the corners of the elastic thin plate pieces and the square gutter body. Because of this, the rising pieces are elastically urged inward, and when the water pressure of rainwater in the eaves gutter tries to knock the rising pieces outward, the thin elastic thin plate pieces provide a large resistance force. This has the effect of effectively preventing the rising piece from falling. Furthermore, the elastic thin plate pieces are inserted only in the corners of the eaves gutter, and since the elastic thin plate pieces can be made thin as described above, they are easy to cut when cutting the eaves gutter with scissors, etc., and the manufacturing cost is low. It has the advantage of being

[Brief explanation of the drawing]

The drawing is a side sectional view showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Square gutter body, 2... Corner part, 3... Elastic thin plate piece, 4... Bottom piece, 6... Standing piece.

Claims (1)

[Claims] 1 A rectangular gutter body with a substantially U-shaped cross section with rising pieces erected at both ends of the bottom piece is formed of synthetic resin such as polyvinyl chloride resin, and extends from both ends of the bottom piece of the rectangular gutter body to the lower end of the rising piece. Cross section abbreviated L at the corner of
A rectangular eaves gutter characterized by being formed by embedding elastic thin plate pieces bent in a character shape and having spring properties in an expanded state.