| 摘要 |
<p>The door has a reinforcing unit (1) including a crash tie-rod (2), which absorbs a large portion of the force during side collision. The tie-rod is connected with a lower longitudinal tie-rod at front, rear and middle regions. The crash tie-rod extends between A-column and B-column of a motor vehicle body. The reinforcing unit is drawn from a high-strength heat deformable sheet steel e.g. boron steel such as 22MnB5.</p> |
