| 摘要 |
<p>A drive device for a movable belt guide in a passive vehicle occupant restraint belt system comprises a rotatable sprocket wheel having a multiplicity of sprocket teeth that provide positive winding and unwinding of a flexible drive tape having holes that receive the sprocket teeth. A guide member that keeps the tape from loosening on the sprocket wheel is engaged by a guide control member that controls the guide member in relation to the number of turns of the belt on the sprocket wheel.</p> |
