Method and arrangement for the electrical release of mechanically stored power for unlocking

摘要

The object of the invention is the mechanical unlocking, for example, of door locks on motor vehicles following the end of an accident. For this purpose, the necessary mechanical energy is obtained by means of the release of a pre-tensioned spring. Release is carried out as a result of severing a fusible point by means of a short electrical fusing current surge, which is taken from an electrical store. Vibration sensor, retriggerable switching electronics, store and reverse flow diode can be assigned individually to each fusing point and thus to each door lock, since these parts are of small construction and are cheap. As a result, in the case of failure of the on-board power supply, caused by an accident, each door lock can be unlocked independently of the others. This is only possible since only very short-term low electrical energy is needed for the fusion process, while the energy released in the pre-tensioned spring effects the mechanical unlocking actuation.