| 摘要 |
PROBLEM TO BE SOLVED: To prevent a corner portion of a side wall of a recessed corner from being cracked or damaged even if stresses generated due to temperature change are concentrated on the corner portion, by forming the side wall of the recessed corner to be thicker from a gutter fitting portion to the corner portion. SOLUTION: A side wall surface and a bottom surface at one end of an eaves gutter is coated with an adhesive, and the gutter is then fitted in one of eaves gutter fitting portions 1 of a bent gutter joint A, to thereby connect the gutter to the one gutter fitting portion 1 of the bent gutter joint A. The other gutter is connected to the other gutter fitting portion in the same manner. Thus, side walls 51, 52 of a recessed corner 4 are formed to be thicker from the gutter fitting portion 1 to a corner portion 53, and therefore the thick-wall portion receives and diffuses stress due to thermal expansion which is generated by a temperature difference over a long period of time. As a result, the corner portion 53 can be prevented from being whitened, cracked or damaged.
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