Safety belt tightening unit for use in belt system of motor vehicle, has belt lock movably supported in tightening direction, and drive unit for tightening belt strap standing in effective connection with belt lock for moving buckle

摘要

The safety belt tightening unit has an electric drive unit (5) for tightening a belt strap (1) securing a vehicle occupant, where the strap is connected with a belt lock (3) by a belt latch (2). The belt lock is movably supported in a tightening direction (4), and the drive unit for tightening the belt strap stands in effective connection with the belt lock for moving a buckle along the direction. The drive unit acts directly on the belt lock, where the drive unit is provided with an electric motor and a transmission unit such as a spindle transmission.