Belt Retractor With Two Force-Limiting Devices Acting in Parallel

A seat belt retractor for a vehicle restraint system having a belt webbing comprising:

• a first and a second load limiting device,
• a two-part belt shaft which is rotatably mounted around a rotational axis in at least one leg of a frame and the belt shaft having a first part, onto which the belt webbing can be wound, and a second part, which can be locked in relation to the at least one leg of the frame using a locking device which can be actuated in a vehicle-sensitive or a belt webbing-sensitive manner, and
• the first load limiting device which upon activation enables a load-limited relative motion between the first part and the second part, and
• the second load limiting device which upon activation acts parallel to the first load limiting device,
• the first and the second part of the belt shaft overlap axially forming a ring shaped chamber in a adjacent the at least one leg of the frame, and
• the second load limiting device formed by a band element with a first portion which rests against a radial outer wall of the ring shaped chamber and with a second portion which rests against the radial inner wall of the ring shaped chamber having at least one deflection section extending between the first and the second parts, wherein
• the band element, upon a relative motion between the first and the second parts can be wound between the first and the second parts in an energy absorbing manner by the at least one deflection section deforming.