| 摘要 |
An automatic fall down railing is provided to be easily manufactured and installed by a simple configuration and to be stably stood up and conducted. An automatic fall down railing comprises a hinge part(10) forming a joint and a first and a second hinge shafts, support rods(20) forming a second hinge groove, a guardrail(G) formed between the support rods, weights(30) formed in a bottom side of the support rod and a buoyancy member(40) formed between the weights. The joint is combined with the concrete structure(c). The second hinge groove comprises a tangent section and a curve area. |
