Seat belt retractor
US8308099B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 14, 2008 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Jun 5, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2022/402
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A seatbelt retractor includes an acceleration sensor. The acceleration sensor includes a sensor case having a supporting surface which is maintained horizontal. A self-standing inertia body whose bottom surface is placed on the supporting surface is installed inside the sensor case in a self-standing condition, and which tilts when a horizontal acceleration is exerted. An actuating member which, in accordance with a tilting movement of the self-standing inertia body, activates a lock mechanism to lock the extraction of the seat belt. An outer contour of a contact area where the supporting surface of the sensor case and the bottom surface of the self-standing inertia body are in surface contact is configured such that a distance from a center axis of the self-standing inertia body to the outer contour differ, in a horizontal plane, in a first direction and in a second direction orthogonal to the first direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.