Device for radial detection of the rotational speed of a rolling-contact bearing, with an encoding element, a sensor element and a sensor holder, and bearing equipped with such device
US5434503A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1994 |
| Grant date | Jul 18, 1995 |
| Priority date | — |
| Expiry date | Feb 22, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2326/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The device for detecting the rotational speed of a rolling-contact bearing includes an encoding element provided with a multipolar ring with axial magnetism secured to the rotating race of the bearing. The device further includes a sensor element provided with a passive sensor with a coil wound in an annular magnetic flux concentrator of U-shaped cross-section, and with a sensor holder secured to the non-rotating race of the bearing. The multipolar ring and the sensor element are located radially with an air gap. The magnetic flux concentrator includes a cylindrical part delimited axially by two collecting branches situated radially outside the cylindrical part. At least one of the collecting branches includes teeth on its periphery. Also, that branch of the flux concentrator which is located on the same side as the rolling elements is inclined toward the adjoining row of rolling elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.