Rotational angle sensing device and assembling method thereof
US7030608B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2005 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | May 12, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/24419
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnet is provided to one of two members, which make relative rotation therebetween. First and second Hall elements are arranged adjacent to each other and are provided to the other one of the two members. A magnetic sensing surface of the first Hall element is generally perpendicular to a magnetic sensing surface of the second Hall element, and a relative rotational angle between the two members is determined through the first and second Hall elements based on a magnetic flux, which is generated by a magnetic flux generating portion of the magnet and passes through the first and second Hall elements toward a magnetic flux attracting portion of the magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.