Belt retractor for a safety belt of a motor vehicle
OwnerFabian Harms, Martin Kühn +1inventors
InventorsFabian Harms, Martin Kühn, Torsten Jung
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Abstract
The invention relates to a belt retractor for a seat belt of a motor vehicle, comprising: a belt shaft which is rotatably mounted in a housing frame, wherein the belt shaft comprises an exit slot; a belt webbing, wherein one end of the belt webbing is fastened in the belt shaft and the belt webbing is guided out of the belt shaft through the exit slot; a profile head which can be locked in relation to the housing frame; and a force-limitation device which is at least in part arranged in the belt shaft, wherein the belt webbing abuts the force-limitation device in the circumferential direction for 180° or more, wherein the force-limitation device has multiple stages.
Claims19
A belt retractor for a seat belt of a motor vehicle, comprising
- a belt shaft which is rotatably mounted in a housing frame, wherein the belt shaft comprises an exit slot,
- a belt webbing, wherein one end of the belt webbing is fastened in the belt shaft and the belt webbing-is guided out of the belt shaft-through the exit slot,
- a profile head which can be locked in relation to the housing frame, and
- a force-limitation device which is at least in part arranged in the belt shaft, wherein
- the belt webbing abuts the force-limitation device-in the circumferential direction for 180° or more,
- the force-limitation device has multiple stages;
- the force-limitation device comprises a sleeve arranged in the belt shaft,
- the sleeve is connected to the belt shaft for conjoint rotation and is detachable;
- and
- the belt webbing abuts the sleeve.
A belt retractor for a seat belt of a motor vehicle, comprising
- a belt shaft which is rotatably mounted in a housing frame, wherein the belt shaft comprises an exit slot,
- a belt webbing, wherein one end of the belt webbing is fastened in the belt shaft and the belt webbing-is guided out of the belt shaft-through the exit slot,
- a profile head which can be locked in relation to the housing frame, and
- a force-limitation device which is at least in part arranged in the belt shaft, wherein
- the belt webbing abuts the force-limitation device-in the circumferential direction for 180° or more,
- the force-limitation device has multiple stages;
- the belt webbing abuts the force-limitation device in a first circumferential region and in a second circumferential region adjoining the first circumferential region, and
- the belt shaft includes a different thickness in the first circumferential region than in the second circumferential region.
Dependencies are inferred from the claim text.