Bearing support with an instrumented movement and coder for an information recorder unit

• US 20070053622A1
• Filed: 06/22/2004
• Published: 03/08/2007
• Est. Priority Date: 06/27/2003
• Status: Abandoned Application

• Current Assignee: ABet SKF
• Original Assignee: ABet SKF
• Inventors: Lauferon, Franck, Gallion, Samuel
• Application Number:
  US10/562,476
• Publication Number:
  US 20070053622A1
• Time in Patent Office: Days
• US Class Current: 384/448
• CPC Class Codes: F16C 19/06 with a single row or balls
• CPC Class Codes: F16C 2300/02 General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
• CPC Class Codes: F16C 41/007 Encoders, e.g. parts with a plurality of alternating magnetic poles
• CPC Class Codes: G01D 2205/73 Targets mounted eccentrically with respect to the axis of rotation
• CPC Class Codes: G01D 2205/775 Tapered profiles
• CPC Class Codes: G01D 5/202 by movable a non-ferromagnetic conductive element G01D5/2033 takes precedence
• CPC Class Codes: G01P 3/443 mounted in bearings bearings F16C
• CPC Class Codes: G01P 3/488 delivered by variable reluctance detectors
• CPC Class Codes: G01P 3/49 using eddy currents

Abstract

The invention relates to a bearing support with an instrumented movement (1), comprising a non-rotating bush (2), a rotating bush (3), roller elements (4), arranged between the rotating (3) and non-rotating (2) bushes and an information recorder unit, with a sensor (7) and a coder (8), comprising a substrate (16) made from an electrically non-conducting material and a thin layer (17) of electrically-conducting material, supported by the substrate (16). The substrate (16) is fixed in rotation with the rotating bush (3).

Claims

1. An instrumented rolling bearing comprising a non-rotating ring, a rotating ring, at least one row of rolling elements positioned between two raceways of the rotating and non-rotating rings, and an information sensor assembly comprising a non-rotating sensor unit and a rotating encoder provided with an active part, the encoder and the sensor unit being separated by a gap, wherein the encoder comprises a substrate made of electrically non-conducting material and an electrically conducting thin layer supported by the substrate, the substrate rotating as one with the rotating ring.

2. The device as claimed in claim 1, wherein the substrate is annular.

3. The device as claimed in claim 2, wherein the substrate has the overall shape of a disk.

4. The device as claimed in claim 1, wherein the sensor unit includes at least one inductive sensor.

5. The device as claimed in claim 1, wherein the sensor unit includes at least one microcoil.

6. The device as claimed in claim 1, wherein the electrically conducting thin layer comprises a plurality of angular sectors separated from one another.

7. The device as claimed in claim 1, wherein the electrically conducting thin layer is circularly continuous.

8. The device as claimed in claim 7, wherein the electrically conducting thin layer is delimited by two circles which are eccentric with respect to one another.

9. The device as claimed in claim 1, wherein the substrate is pushed onto a land of the rotating ring.

10. The bearing as claimed in claim 1, wherein the substrate is bonded to the rotating ring.

11. The bearing as claimed in claim 1, wherein the substrate is trapped against a radial surface of the rotating ring.

12. The bearing as claimed in claim 1, further comprising an encoder support mounted on a cylindrical surface of the rotating ring.

13. An instrumented rolling bearing comprising a non-rotating ring, a rotating ring, at least one row of rolling elements positioned between two raceways of the rotating and non-rotating rings, a non-rotating sensor unit and a rotating encoder provided with an active part, the encoder and the sensor unit being separated by a gap, wherein the encoder comprises a substrate made of electrically non-conducting material and an electrically conducting thin layer supported by the substrate, the substrate rotating as one with the rotating ring.