JPS6139775Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a synthetic resin girder whose height and width can be freely adjusted.

BACKGROUND TECHNOLOGY Synthetic resin girders have traditionally been constructed in which a metal plate is sandwiched between synthetic resin layers to strengthen the structure, such as between adjacent eaves.

This grate was formed into a square groove shape in advance and the side walls were cut out at the construction site, or a flat plate was bent at the construction site.

Problems that the invention aims to solve Generally, the length of the girdle is nearly 3 meters, so the above-mentioned processing at the construction site is extremely troublesome and time-consuming, and small adjustments such as height and width can be made freely. I couldn't do it.

Furthermore, when bending the trough, force was applied to the synthetic resin layer, causing it to peel or crack, allowing rainwater to penetrate and corrode the metal plate.

Means for Solving the Problems The present invention solves the above-mentioned problems by using the structure described in the claims of the utility model registration. A detailed description will be given below with reference to the drawings.

In Fig. 1, reference numeral 1 is made of synthetic resin containing a metal plate 4, and has a sandwich structure in which the metal plate 4 is sandwiched between an inner synthetic resin layer 2 and an outer synthetic resin layer 3. is being done strongly.

On the bottom and both side surfaces of the inner synthetic resin layer 2, which has been previously formed into a square groove shape, except for both side ends and corner portions, a single hollow thin wall portion 2a extending in the length direction is formed. ing. The hollow thin wall portion 2 a is formed in a bulging shape from the inner synthetic resin layer 2 , and the bottom portion of the hollow thin wall portion 2 a is formed thinner than the other inner synthetic resin layers 2 .

Although the case of a sandwich structure has been described above, it can also be implemented using a two-layer synthetic resin structure lined with a metal plate, or the metal plate 4 may be in the form of a wire mesh.

Function: The metal plate 4 is strong, and when the bending process is performed from the hollow thin-walled parts 2a, 2a, the tensile stress and compressive stress acting on the bent part are extremely small, so there is almost no deformation. You can easily change the height, width, etc. without having to restore it.

Since the hollow thin-walled portions 2a, 2a are formed in a bulging shape, they deform during the bending process to absorb tensile force and compressive force, and during the bending process, the hollow thin-walled portions 2a, 2a near the bottom are deformed and absorbed during the bending process. Even if force is applied to the synthetic resin layer 2 and the synthetic resin layer 2 peels off or cracks, the upper parts of the hollow thin-walled parts 2a, 2a will not be damaged, and rainwater will not penetrate into the metal plate 4 and corrode the metal plate 4. do not have.

FIG. 3 shows an example where the pipe 6 is located below the eave 5, and is bent outward along the hollow thin wall portion 2a of the bottom of the gutter and processed into a substantially W-shape.

FIG. 4 shows an example in which there is a structure 7 under the eaves 5, and the height and width of the gutter is adjusted by bending the hollow thin-walled portions 2a, 2a of the gutter sides outward.

Effects of the invention As described above, according to the invention, it is possible to freely bend the trough made of a synthetic resin layer and a metal plate from the hollow thin section at the construction site, and the height can be increased depending on the conditions at the construction site. The width etc. can be changed, and the hollow thin walled portion can absorb tensile force and compressive force during bending, thereby preventing damage to the bent portion and corrosion of the metal plate.

Further, since the hollow thin wall portion is bulged, it can be used as a mark during bending.

[Brief explanation of the drawing]

FIG. 1 is a front cross-sectional view of an example of a synthetic resin tray of the present invention, FIG. 2 is an enlarged view of section A in FIG. 1, and FIGS. 3 and 4 are views of the above embodiment in use. 2...Inner synthetic resin layer, 2a...Hollow thin wall part,
4...Metal plate.

Claims (1)

[Scope of utility model registration request] In a synthetic resin gutter consisting of a metal plate and a synthetic resin layer, at least one hollow thin wall extending in the length direction is formed in a bulging shape on at least one side of the synthetic resin layer excluding both side edges and corners. The hollow thin-walled portion is made of synthetic resin, and the bottom portion thereof is thinner than the other synthetic resin layers.