| 摘要 |
<p>The bracket 28 is made from a continuous sheet of metal bent into a shape. In use, mounted to a post 12 and supporting a rail 24, has a uniform cross section across a horizontal plane. The bracket has parallel front 40 and rear 42 panels and interconnecting sides. The shape of the cross section provides two deformation modes which deform at different impact levels. Each side may include a pair of web portions the first web portion of each side extends inwardly towards the other from one respective end of the front panel and away from the rail at an angle of less than 45 degrees. The second web extends from the inward ends of the first webs and are longer than the first webs and each joins a respective end of the rear web at an acute angle of more than 45 degrees.</p> |
