公开(公告)号：US10974691B2

公开(公告)日：2021-04-13

申请号：US16360222

申请日：2019-03-21

Applicant: AUTOLIV DEVELOPMENT AB

Inventor： Michael Strutz ,  Stefan Suhr ,  Christopher Werner

IPC: B60R22/46

Abstract: A self-locking belt retractor for a seat belt device of a motor vehicle with a belt shaft body and a profile head, and a blocking device with a blocking catch mounted on the profile head. When activated, the blocking device engages in a blocked position with a vehicle-affixed interlock for the purpose of blocking the belt shaft in the belt extension direction. A force-limiting device is disposed in the force transmission path from the belt shaft body to the blocking catch. The profile head is made as two parts, with a carrier component and an insert component which are affixed together. The insert component exhibits a higher resistance to deformation than the carrier component and, when the belt shaft is blocked, forms part of the force transmission path between the blocking catch and the force-limiting device.