DEVICE FOR TIGHTENING THE SAFETY BELT IN A VEHICLE Russian patent published in 1994 - IPC

FIELD: automotive industry. SUBSTANCE: device has piston 2 with rod 1 fastened to the vehicle. They are displaced inside pressure-tight cylinder 3 under the action of gas-producing charge 4 initiated by electric igniter 5 according to the command from the accelerator pick up. The device also has second pressure-tight cylinder 6 axially mounted on the first one. The second cylinder can move relative to the first one towards the rod fixation. The free end of second cylinder 6 is connected with safety belt lock 7. In order to secure the second cylinder movement on the lateral surface of the first cylinder, through radial holes 8 are made at a distance equal to the height of piston 2 from the face at which the second cylinder is mounted. EFFECT: such construction enhances the effectiveness and the reliability of the device operation. 1 dwg