Device having pyrotechnically adjustable rigidity for absorbing crash energy and method for adjusting the rigidity

摘要

A device having an adjustable rigidity for absorbing crash energy, includes: a housing for accommodating and deforming a deformation element when the deformation element is moved in a forward motion direction due to the crash energy; a disengageable die situated in the housing for accommodating and deforming the deformation element; a supporting device situated in the housing and configured to support, in a first position, the disengageable die against a radial force of the deformation element acting in a transverse direction to the forward motion direction, and (ii) release, in a second position, the disengageable die for a motion for disengagement due to the radial force; and a pyrotechnic actuator moving the supporting device from the first position into the second position, to adjust the rigidity of the device.

主权项

1. A vehicle-mounted device having an adjustable rigidity for absorbing crash energy, comprising:
a deformation element; a housing accommodating the deformation element, wherein the housing deforms the deformation element when the deformation element is moved in a forward motion direction conditioned by the crash energy; a disengageable die arranged in the housing, for accommodating and deforming the deformation element; a supporting device arranged in the housing, wherein the supporting device is configured to (i) support, in a first position of the supporting device, the disengageable die against a radial force of the deformation element acting in a transverse direction to the forward motion direction, and (ii) release, in a second position of the supporting device, the disengageable die for a motion for disengagement due to the radial force; and a pyrotechnic actuator generating a pressure for moving the supporting device from the first position into the second position, to adjust the rigidity of the vehicle-mounted device.