Combined sensor and bearing assembly and method of magnetizing element of rotation sensor
US7304471B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2005 |
| Grant date | Dec 4, 2007 |
| Priority date | — |
| Expiry date | Apr 25, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C19/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A combined sensor and bearing assembly (1) of the present invention includes a rolling bearing unit (22) and a rotation sensor unit (23). The rolling bearing unit (22) includes a rotatable raceway member (2), a stationary raceway member (3) mounted around the rotatable raceway member (2) with an annular bearing space defined between it and the rotatable raceway member (2), and a circular row of rolling elements (4). The combined sensor and bearing assembly (1) also includes a to-be-detected member (7) including a magnet secured to the rotatable raceway member (2), and a magnetic detector (8) including a magnetic sensor of an analog output type disposed in face-to-face relation with the to-be-detected member (7). Only a range in which a magnetic characteristic of the to-be-detected member (7) relative to the magnetic detector (8) exhibits linearity is used for detection of rotation angle of the rotatable raceway member (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.