Safety belt retractor with a load limiting device and vehicle having the same

Abstract

A safety belt retractor having a load limiting device is provided. The load limiting device comprises: a hollow spool () on which a webbing can be wound, a locking disk () having a flange () and a sleeve () attached thereto, and a torsion bar (); the locking disk () can be mounted with the flange () on an end of the spool () and can extend with the sleeve () into a hollow chamber of the spool (), and the spool () is rotatable in relation to the locking disk (); the torsion bar () can be arranged in the hollow chamber of the spool () and is fixed on the spool () and on the locking disk () in a rotationally secured manner. The load limiting device further comprises a load limiting ring () with a thread () on the inner circumference, the load limiting ring () can be rotated around the sleeve () with the rotation of the spool (), and the sleeve () is provided on its outer circumference with an engaging section () and with a resistance part for applying a resistance to the load limiting ring (), the sleeve () having in the engaging section () a mating thread which matches with the thread () of the load limiting ring () and the resistance part being arranged downstream of the engaging section () in the axial displacement direction of the load limiting ring ().