Occupant restraint seat-belt force-limiting device for motor vehicle

摘要

The device has a torsion shaft (12) mounted in a belt spooling casing (2) between the casing and a torsion rod (4). The torsion shaft can be deformed as it absorbs energy. The shaft is force-connected to the torsion rod and/or to the belt spooling casing at one end. The other end of the torsion shaft interacts with a controllable blocking device (13,14,16). The blocking device for the torsion shaft and/or torsion rod consists of a pawl wheel (13;5) mounted on it or them and a pawl (14;6) electromagnetically actuated via a cam (15), mounted on the housing and which interacts with the pawl wheel.