Patent ID: 6105893
Filing Date: 2000-08-22
Classification: B60R

Abstract:
A safety belt reeling device comprising:a belt reeling shaft (10) lockable by a vehicle-sensitive and/or belt-sensitive locking device;a tightening device;a tightening coupling connecting said tightening device to said belt reeling shaft when said tightening device is actuated;said tightening device comprising a drive disc (18, 38) and a drive device (37) for driving said drive disc (18, 38);a force limiting device comprising a torsion bar (12) connected to said belt reeling shaft (10) and to a stationary abutment;a pawl coupling activated by a tightening movement of said tightening device;said pawl coupling comprising at least one force limiting pawl for switching on or off said force limiting device as a function of functional states of said safety belt reeling device;said pawl coupling further comprising a coupling ring (23, 45) performing a relative rotation by an angular distance relative to said belt reeling shaft (10) in a rotational direction of said belt reeling shaft (10) defined by said tightening movement, wherein said relative rotation of said coupling ring (23, 45) is realized by the mass inertia of said belt reeling shaft (10), effective at the start of said tightening movement, relative to said drive disc (18, 38);a forced control (28, 29; 49, 51) controlling said force limiting pawl (27, 42) for switching on or off said force limiting device.