Patent ID: 11932196
Assignee: AUTOLIV DEVELOPMENT AB
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A belt retractor for a seat belt of a motor vehicle having
a belt shaft rotatably mounted in a housing frame,
a profiled head which can be locked in relation to the housing frame; and
a multistage first force-limiting device, wherein the multistage first force-limiting device is coupled on the one hand to the profiled head and on the other hand to the belt shaft, and wherein the multistage first force-limiting device allows a force-limited rotation of the belt shaft relative to the locked profiled head,
wherein an actively triggerable decoupling device is formed such that the belt shaft can be uncoupled from the force limiter of the multistage first force-limiting device by the decoupling device,
wherein the decoupling device comprises at least one coupling element and one shaft ring, and
wherein the at least one coupling element is held in an initial state radially outward by the one shaft ring in a coupling position.