Patent ID: 6837537
Filing Date: 2005-01-04
Classification: B62D

Abstract:
1. Arrangement for weakening a portion ( 4 , 4 ′) of a vehicle ( 7 ), comprising at least one element ( 8 ), which is arranged at the portion ( 4 , 4 ′) to affect its strength, said portion ( 4 , 4 ′) being disposed between a beam ( 12 ) of a vehicle cab ( 5 ) and a vehicle frame ( 6 ), said portion being joined to the element ( 8 ), so that the beam ( 12 ), and with it the vehicle cab ( 5 ), upon impact in a collision, can be displaced relative to the vehicle frame ( 6 ), characterized in that a sensor ( 9 ) is arranged to sense impact acting on the portion ( 4 , 4 ′), and a control unit ( 10 ) is arranged to, firstly, receive signals from the sensor ( 9 ) and, secondly, emit a control signal when the signal received from the sensor ( 9 ) agrees with a set value, said element (B) comprising an explosive charge ( 11 ) disposed to detonate when said control signal is emitted from the control unit ( 10 ), said explosive charge ( 11 ) being arranged at the element ( 8 ) in such a manner that the element ( 8 ) weakens the strength of the portion ( 4 , 4 ′) when the explosive charge ( 11 ) detonates, thereby allowing the cab ( 5 ) to be displaced, by the impact generated in the collision, relative to the vehicle frame ( 6 ) when the explosive charge ( 11 ) detonates.