Car safety-belt tightening mechanism - has explosives-driven projectile coupled to pull-rod and guided in tube

摘要

The mechanism pulls a car safety-belt tight in the event of excessive acceleration or deceleration being detected. A pull-rod coupled to the belt is actuated by an explosive charge. The rod(1) is coupled to a projectile(3) driven by the charge (2), and which is guided in a tube(4). The charge can be in a cartridge fixed to the tube end, the projectile being mounted on the cartridge. The tube with cartridges and projectile can form a pendulum weight for the sensor. ADVANTAGE - Rapid transmission to pull rod.