CRASH SENSOR WITH IMPROVED ACTIVATION FOR STABBING PRIMER

摘要

A crash sensor (10) for automobiles of the type including a ball (20) moving against viscous damping in a closed cylinder (27) for releasing a firing pin (72) for initiating a pyrotechnic sequence has an improved release mechanism (40). When the ball (20) moves a predetermined distance from its normal or resting position during an automobile crash a release mechanism (40) releases a belleville spring (64) maintained under stress. The belleville spring (64) thereupon initiates movement of a firing pin (72) towards a stab primer (122). The release mechanism is a single piece of spring material having multiple levers (42) extending radially inward from a torsionally elastic ring (41) each lever (42) having a detent and pivot (48). The firing pin (72) is mounted on and driven by a snap disk (20) which is normally in its position of higher energy equilibrium and is released to go to its position of lower energy equilibrium by pressure applied by the belleville spring (64).