| 摘要 |
There is provided an under-run protector which is light-weighted and has sufficient strength, owing to a change in a plate thickness of its portion optimum for strength improvement. In an under-run protector which includes a hollow material 10 having a rectangular cross section and mounted on a vehicle body frame 20 via a mounting bracket 21, a plate thickness t1 of a substantially horizontal surfaces 12A forming the hollow material 10 on the vehicle body frame 20 side with respect to a longitudinal-direction center line 13 of the hollow material 10 is larger than a plate thickness t2 of a substantially horizontal surfaces 12B opposite the vehicle body frame 20 with respect to the longitudinal-direction center line 13 of the hollow material 10. |
