Patent ID: 11866000
Assignee: AUTOLIV DEVELOPMENT AB
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A belt retractor comprising
a belt shaft that is rotatably mounted in a housing that can be fastened in a vehicle-fixed manner and onto which a safety belt can be wound, and
an electric motor for driving the belt shaft to a rotational movement, and
a gear mechanism that transmits the rotational movement from the electric motor to the belt shaft, wherein
when it is deactivated, the gear mechanism can be driven with a first torque as an assembly for driving the belt shaft, and
the belt retractor has a first part that is driven to a rotational movement in a direction of rotation opposite to the direction of rotation of the electric motor when a pulling force exerted by the safety belt is exceeded, and that
a braking device is provided, which brakes the rotational movement of the first part and as a result actuates a blocking device to block a second part of the gear mechanism, wherein
by blocking the second part, the blocking device activates the gear mechanism to transmit the rotational movement of the electric motor at a reduction ratio to the belt shaft.