Autoliv Development Ab

Fredrik Wigström

Erik Rydsmo

Bengt Dahlquist

Elias Mathiasson

A vehicle seat belt retractor with a belt shaft () and a coupled profile head lockable to a housing. A force-limiting device has at least two elements () between profile head and belt shaft (). Free ends () of the force-limiting elements () are coupled to each other by a connecting tube () via a coupling element (). The coupling element () has a hook-shaped spring element with a locking hook () which slides over the connecting tube () when the belt shaft () rotates and engages in a locking groove () to couple the connecting tube () to the belt shaft (). At a preset angle of rotation of the belt shaft () is reached, the bridging device releases the coupling element () for the locking hook () to latch into the connecting tube locking groove ().

Belt retractor with a switchable force-limiting device

A seat belt retractor for a safety belt of a motor vehicle having a belt shaft () rotatably mounted in a frame, a profile head () lockable in relation to the frame, a load limiting device () located between the profile head () and the belt shaft () for enabling the belt shaft () to undergo a load limited rotation in the belt webbing extraction direction (A) with the profile head () being locked and a load limiting level predetermined by the load limiting device () being exceeded.

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Göteborg, Sweden

Fredrik Wigström