| 摘要 |
PURPOSE: A combining bolt for a fabricated construction panel is provided to prevent leakage efficiently by contacting to a panel without additional parts in simple structure, and to reduce the cost. CONSTITUTION: A combination bolt is composed of a threaded part(110) forming thread in an outer periphery, a hexagonal head part(120), and a washer part(130) extended in the edge of the head part. Round first and second protruded ribs(132,134) are separated in the lower part of the washer part. The first and second protruded ribs are contacted to the outer face of a panel(200) in rotating the head part. The leakage from rain water is prevented with contacting the lower part of the washer part and the outer face of the panel without a gap. Working efficiency and endurance are improved, and the cost is reduced with fixing the assembling panel by an integrated part.
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