Belt retractor for a safety belt having plastically deformable ratchet teeth
US5779177A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 1997 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Feb 13, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2022/286
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a belt retractor for a safety belt comprising a housing (12) which possesses two parallel limbs (14), in each of which an opening (18) is formed, a belt drum (20), which is so mounted rotatably in the housing (12) that sets (22) of ratchet teeth provided at the drums's axial ends are arranged within the openings (18) with an allround clearance from the same, and a load bearing pawl (30), which for a selective locking of the belt drum (20) is able to be engaged with the ratchet teeth (22) thereof, the belt drum (20) being adapted to be shifted in a radial direction in relation to its axis (C) by a load applied to it in the locked condition until the ratchet teeth (22) thereof are supported in the openings (18) of the limbs (14), the intention is to reduce the maximum load acting on the pawl. For this purpose at the edge of the openings (18) a respective set (40) of teeth is formed, which corresponds to the sets of ratchet teeth (22) but possesses at least one support portion (42), which is adapted to be plastically deformed by the ratchet teeth (22), when the belt drum (20) is shifted under a high load in the radial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.