Impact protection unit for motor vehicle has extendable structure with extension effected by element with self-locking thread, and extension element is at same time constructed at least partially as crash element

摘要

The impact protection unit has an extendable structure which increases the crumple zone, the extension being effected by an element (4) with a self-locking thread (3). The extension element is at the same time constructed at least partially as a crash element and at least partially as a tube. The impact protection device may be a bumper and/or a transverse member. The extension element may be at least partially installed inside a longitudinal support (5).