Seat belt retractor having an inertia sensor with a pivotal sensor housing
US9346434B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2012 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Nov 16, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2022/402
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A seat belt retractor (1) with a vehicle-sensitive, inertia sensor (4), and a blocking device to block belt extraction movement of a belt shaft (3) controllable by an inertia sensor (4). The inertia sensor (4) has a sensor housing (5) with a gearing (7) mounted to swivel, blocking element (10) coupled on the belt shaft (3), engages in the gearing (7) in a first position to fix the sensor housing (5) and swivels during a belt retraction movement from a first position into a second position where it does not engage in the gearing (7). A guide is provided in the form of a longitudinal recess (12) with a variable width. The blocking element (10) engages with a protrusion (14) in the recess (12) and during the rotation of the belt shaft (3) to cause relative movement in the longitudinal direction of the recess (12).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.