| 摘要 |
<p>The present invention provides a crash rail (20) for a vehicle. The crash rail (20) has a root portion (22) which can be anchored to a part of the vehicle (11), a tip portion (21) which is spaced apart from the root portion (22) and which is located nearer a potential impact point of the vehicle when the root portion (22) is anchored to the said part of the vehicle and a middle portion which extends from the root portion (22) to the tip portion (21). The crash rail (20) comprises a wall which defines a groove or a cavity in the crash rail (20). The groove or the cavity in the crash rail (20) has a cross-sectional area which increases gradually from the tip portion (21) to the root portion (22). The wall has a thickness which increases gradually from the tip portion (21) to the root portion (22). The wall is composed of a composite material having fibres set in a resin material. The crash rail (20) can be crushed when the vehicle impacts with another object to thereby absorb energy of the impact. During the impact the crash rail (20) disintegrates with the resin separating from the fibres set therein. During the impact the crash rail (20) disintegrates progressively with the tip portion (21) disintegrating first and then the middle portion and lastly the root portion (22).</p> |
