| 摘要 |
PROBLEM TO BE SOLVED: To bent a crossing gate bar and let an automobile go past when the automobile contacts the rod and subsequently recover the rod at an almost fixed location, by constituting the crossing gate bar by a hollow state drawing molding made of a polypropylene resin. SOLUTION: In a crossing gate, an interrupting rod 1 is mounted on a rotatable holding part 5 of a crossing gate main body 3 and a weight 4 is provided on an opposite side. This crossing gate bar 1 is made of drawing molding of a polypropylene resin. By making this drawing molding of the polypropylene resin into an hollow state, the molding shows specific durability for bending. Namely, when an automobile contacts the gate bar 1 for avoiding a danger in a state that the gate bar 1 of the crossing gate is lowered, the gate bar 1 is bent without being destroyed if the automobile is not unreasonably speeded up and the automobile is capable of pushing away the gate bar 1 and passing the bar 1. The gate bar 1 is bent from the vicinity of a root part 2 to be a connecting part with a holding part 5 (normally, is made of metal with rigidity) of the crossing gate. |
