| 摘要 |
PURPOSE: A guide box for the central line is provided to prevent the damage of a body due to a collision between vehicles and to prevent an elastic bar assembled to a body from falling out. CONSTITUTION: A guide box for the central line composed of a hollow body(10) and an elastic bar(20) assembled to the body comprises the steps of passing a bar fixing hole(11) through the center of the body, forming hanging grooves(12,13) on the lower end of the bar fixing hole, pressing an insert bar(30) into the elastic bar, projecting cogged joints(21,31) fitted to the hanging grooves on the lower end of the elastic bar and the insert bar and forming many reinforcing ribs extended to the upper surface from the lower end in the body. |
