Belt retractor for a vehicle seat belt
US9908504B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2014 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Nov 26, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2022/385
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A belt retractor for a vehicle seat belt comprises a rotatably supported belt reel from which webbing can be unwound, a force limiting means which in a force limiting phase permits controlled webbing extension in the webbing extension direction when the belt reel is blocked and a particular force threshold is exceeded, and a change-over device for performing a change-over operation during which it is changed between a low force limitation level and a high force limitation level. In accordance with the invention, the change-over device includes a control means which in response to the identification of an installed child safety seat suppresses a change-over operation from the low force limitation level to the high force limitation level and/or triggers a change-over operation from the high force limitation level to the low force limitation level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.