Tensioner for vehicle seat belt incorporates traction means that transmits tensioner driving movement to seat belt

摘要

The tensioner has a tensioner drive (9) that comprises a guide tube (13) that contains piston (11) and gas generator (26). The traction means comprises steel cables (7,8). These are attached to the seat belt and pass through guide channel (2) in the anchor block (1) which is attached to the vehicle floor. In the event of sudden deceleration, The expanding gases from the gas generator drive the piston along the guide tube and draw the traction means into the guide block, so applying tension to the seat belt.