Torque sensor for electric power steering system
US7677114B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2007 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Jul 3, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L5/221
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A torque sensor, which is for an electric power steering system that has an output shaft for rotating in response to rotation of an input shaft, may include a first rotor for rotating with the input shaft, a second rotor for rotating with the output shaft, a first pinion gear mounted for rotating in response to rotation of the first rotor, a first magnet mounted for rotating with the first pinion gear, a second pinion gear mounted for rotating in response to rotation of the second rotor, a second magnet mounted for rotating with the second pinion gear, a first sensor positioned for sensing an angular position of the first magnet, and a second sensor positioned for sensing an angular position of the second magnet. The first rotor and the second rotor are mounted so that there can be relative rotation between the first rotor and the second rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.